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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/usb/host
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/usb/host')
-rw-r--r--kernel/drivers/usb/host/Kconfig33
-rw-r--r--kernel/drivers/usb/host/Makefile11
-rw-r--r--kernel/drivers/usb/host/bcma-hcd.c128
-rw-r--r--kernel/drivers/usb/host/ehci-dbg.c3
-rw-r--r--kernel/drivers/usb/host/ehci-fsl.c221
-rw-r--r--kernel/drivers/usb/host/ehci-fsl.h1
-rw-r--r--kernel/drivers/usb/host/ehci-hcd.c10
-rw-r--r--kernel/drivers/usb/host/ehci-hub.c10
-rw-r--r--kernel/drivers/usb/host/ehci-msm.c6
-rw-r--r--kernel/drivers/usb/host/ehci-orion.c3
-rw-r--r--kernel/drivers/usb/host/ehci-platform.c96
-rw-r--r--kernel/drivers/usb/host/ehci-spear.c1
-rw-r--r--kernel/drivers/usb/host/ehci-st.c7
-rw-r--r--kernel/drivers/usb/host/ehci-tegra.c12
-rw-r--r--kernel/drivers/usb/host/ehci.h15
-rw-r--r--kernel/drivers/usb/host/fotg210-hcd.c1962
-rw-r--r--kernel/drivers/usb/host/fotg210.h36
-rw-r--r--kernel/drivers/usb/host/fsl-mph-dr-of.c38
-rw-r--r--kernel/drivers/usb/host/fusbh200-hcd.c5893
-rw-r--r--kernel/drivers/usb/host/fusbh200.h675
-rw-r--r--kernel/drivers/usb/host/isp116x-hcd.c3
-rw-r--r--kernel/drivers/usb/host/max3421-hcd.c1
-rw-r--r--kernel/drivers/usb/host/ohci-at91.c178
-rw-r--r--kernel/drivers/usb/host/ohci-dbg.c6
-rw-r--r--kernel/drivers/usb/host/ohci-hcd.c3
-rw-r--r--kernel/drivers/usb/host/ohci-nxp.c18
-rw-r--r--kernel/drivers/usb/host/ohci-platform.c69
-rw-r--r--kernel/drivers/usb/host/ohci-q.c3
-rw-r--r--kernel/drivers/usb/host/ohci-spear.c1
-rw-r--r--kernel/drivers/usb/host/ohci-tmio.c2
-rw-r--r--kernel/drivers/usb/host/oxu210hp-hcd.c9
-rw-r--r--kernel/drivers/usb/host/ssb-hcd.c15
-rw-r--r--kernel/drivers/usb/host/u132-hcd.c40
-rw-r--r--kernel/drivers/usb/host/uhci-platform.c1
-rw-r--r--kernel/drivers/usb/host/whci/init.c3
-rw-r--r--kernel/drivers/usb/host/whci/qset.c4
-rw-r--r--kernel/drivers/usb/host/xhci-dbg.c21
-rw-r--r--kernel/drivers/usb/host/xhci-hub.c308
-rw-r--r--kernel/drivers/usb/host/xhci-mem.c67
-rw-r--r--kernel/drivers/usb/host/xhci-pci.c121
-rw-r--r--kernel/drivers/usb/host/xhci-plat.c72
-rw-r--r--kernel/drivers/usb/host/xhci-ring.c446
-rw-r--r--kernel/drivers/usb/host/xhci.c132
-rw-r--r--kernel/drivers/usb/host/xhci.h103
44 files changed, 2372 insertions, 8415 deletions
diff --git a/kernel/drivers/usb/host/Kconfig b/kernel/drivers/usb/host/Kconfig
index 197a6a3e6..3bb088701 100644
--- a/kernel/drivers/usb/host/Kconfig
+++ b/kernel/drivers/usb/host/Kconfig
@@ -32,7 +32,14 @@ config USB_XHCI_PCI
default y
config USB_XHCI_PLATFORM
- tristate
+ tristate "Generic xHCI driver for a platform device"
+ ---help---
+ Adds an xHCI host driver for a generic platform device, which
+ provides a memory space and an irq.
+ It is also a prerequisite for platform specific drivers that
+ implement some extra quirks.
+
+ If unsure, say N.
config USB_XHCI_MVEBU
tristate "xHCI support for Marvell Armada 375/38x"
@@ -137,7 +144,7 @@ config XPS_USB_HCD_XILINX
devices only.
config USB_EHCI_FSL
- bool "Support for Freescale PPC on-chip EHCI USB controller"
+ tristate "Support for Freescale PPC on-chip EHCI USB controller"
depends on FSL_SOC
select USB_EHCI_ROOT_HUB_TT
select USB_FSL_MPH_DR_OF if OF
@@ -295,7 +302,7 @@ config USB_OCTEON_EHCI
bool "Octeon on-chip EHCI support (DEPRECATED)"
depends on CAVIUM_OCTEON_SOC
default n
- select USB_EHCI_BIG_ENDIAN_MMIO
+ select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
select USB_EHCI_HCD_PLATFORM
help
This option is deprecated now and the driver was removed, use
@@ -341,16 +348,6 @@ config USB_ISP1362_HCD
To compile this driver as a module, choose M here: the
module will be called isp1362-hcd.
-config USB_FUSBH200_HCD
- tristate "FUSBH200 HCD support"
- depends on USB
- ---help---
- Faraday FUSBH200 is designed to meet USB2.0 EHCI specification
- with minor modification.
-
- To compile this driver as a module, choose M here: the
- module will be called fusbh200-hcd.
-
config USB_FOTG210_HCD
tristate "FOTG210 HCD support"
depends on USB
@@ -441,10 +438,10 @@ config USB_OHCI_HCD_PXA27X
PXA27x/PXA3xx chips.
config USB_OHCI_HCD_AT91
- tristate "Support for Atmel on-chip OHCI USB controller"
- depends on USB_OHCI_HCD && ARCH_AT91
- default y
- ---help---
+ tristate "Support for Atmel on-chip OHCI USB controller"
+ depends on USB_OHCI_HCD && ARCH_AT91 && OF
+ default y
+ ---help---
Enables support for the on-chip OHCI controller on
Atmel chips.
@@ -568,7 +565,7 @@ config USB_OCTEON_OHCI
bool "Octeon on-chip OHCI support (DEPRECATED)"
depends on CAVIUM_OCTEON_SOC
default USB_OCTEON_EHCI
- select USB_OHCI_BIG_ENDIAN_MMIO
+ select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
select USB_OHCI_LITTLE_ENDIAN
select USB_OHCI_HCD_PLATFORM
help
diff --git a/kernel/drivers/usb/host/Makefile b/kernel/drivers/usb/host/Makefile
index 65b0b6a58..e7558abc9 100644
--- a/kernel/drivers/usb/host/Makefile
+++ b/kernel/drivers/usb/host/Makefile
@@ -24,10 +24,9 @@ endif
obj-$(CONFIG_USB_WHCI_HCD) += whci/
-obj-$(CONFIG_PCI) += pci-quirks.o
-
-obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
-obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
+ifneq ($(CONFIG_USB), )
+ obj-$(CONFIG_PCI) += pci-quirks.o
+endif
obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
@@ -63,6 +62,8 @@ obj-$(CONFIG_USB_OHCI_HCD_PXA27X) += ohci-pxa27x.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
obj-$(CONFIG_USB_XHCI_HCD) += xhci-hcd.o
+obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
+obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o
@@ -70,8 +71,8 @@ obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o
obj-$(CONFIG_USB_IMX21_HCD) += imx21-hcd.o
obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-mph-dr-of.o
+obj-$(CONFIG_USB_EHCI_FSL) += ehci-fsl.o
obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
-obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o
obj-$(CONFIG_USB_FOTG210_HCD) += fotg210-hcd.o
obj-$(CONFIG_USB_MAX3421_HCD) += max3421-hcd.o
diff --git a/kernel/drivers/usb/host/bcma-hcd.c b/kernel/drivers/usb/host/bcma-hcd.c
index 526cfab41..5398e3d42 100644
--- a/kernel/drivers/usb/host/bcma-hcd.c
+++ b/kernel/drivers/usb/host/bcma-hcd.c
@@ -2,7 +2,8 @@
* Broadcom specific Advanced Microcontroller Bus
* Broadcom USB-core driver (BCMA bus glue)
*
- * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2011-2015 Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2015 Felix Fietkau <nbd@openwrt.org>
*
* Based on ssb-ohci driver
* Copyright 2007 Michael Buesch <m@bues.ch>
@@ -23,6 +24,8 @@
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <linux/usb/ehci_pdriver.h>
#include <linux/usb/ohci_pdriver.h>
@@ -88,7 +91,7 @@ static void bcma_hcd_4716wa(struct bcma_device *dev)
}
/* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
-static void bcma_hcd_init_chip(struct bcma_device *dev)
+static void bcma_hcd_init_chip_mips(struct bcma_device *dev)
{
u32 tmp;
@@ -159,6 +162,87 @@ static void bcma_hcd_init_chip(struct bcma_device *dev)
}
}
+static void bcma_hcd_init_chip_arm_phy(struct bcma_device *dev)
+{
+ struct bcma_device *arm_core;
+ void __iomem *dmu;
+
+ arm_core = bcma_find_core(dev->bus, BCMA_CORE_ARMCA9);
+ if (!arm_core) {
+ dev_err(&dev->dev, "can not find ARM Cortex A9 ihost core\n");
+ return;
+ }
+
+ dmu = ioremap_nocache(arm_core->addr_s[0], 0x1000);
+ if (!dmu) {
+ dev_err(&dev->dev, "can not map ARM Cortex A9 ihost core\n");
+ return;
+ }
+
+ /* Unlock DMU PLL settings */
+ iowrite32(0x0000ea68, dmu + 0x180);
+
+ /* Write USB 2.0 PLL control setting */
+ iowrite32(0x00dd10c3, dmu + 0x164);
+
+ /* Lock DMU PLL settings */
+ iowrite32(0x00000000, dmu + 0x180);
+
+ iounmap(dmu);
+}
+
+static void bcma_hcd_init_chip_arm_hc(struct bcma_device *dev)
+{
+ u32 val;
+
+ /*
+ * Delay after PHY initialized to ensure HC is ready to be configured
+ */
+ usleep_range(1000, 2000);
+
+ /* Set packet buffer OUT threshold */
+ val = bcma_read32(dev, 0x94);
+ val &= 0xffff;
+ val |= 0x80 << 16;
+ bcma_write32(dev, 0x94, val);
+
+ /* Enable break memory transfer */
+ val = bcma_read32(dev, 0x9c);
+ val |= 1;
+ bcma_write32(dev, 0x9c, val);
+}
+
+static void bcma_hcd_init_chip_arm(struct bcma_device *dev)
+{
+ bcma_core_enable(dev, 0);
+
+ if (dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4707 ||
+ dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM53018) {
+ if (dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4707 ||
+ dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4708)
+ bcma_hcd_init_chip_arm_phy(dev);
+
+ bcma_hcd_init_chip_arm_hc(dev);
+ }
+}
+
+static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val)
+{
+ int gpio;
+
+ gpio = of_get_named_gpio(dev->dev.of_node, "vcc-gpio", 0);
+ if (!gpio_is_valid(gpio))
+ return;
+
+ if (val) {
+ gpio_request(gpio, "bcma-hcd-gpio");
+ gpio_set_value(gpio, 1);
+ } else {
+ gpio_set_value(gpio, 0);
+ gpio_free(gpio);
+ }
+}
+
static const struct usb_ehci_pdata ehci_pdata = {
};
@@ -169,7 +253,7 @@ static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev, boo
{
struct platform_device *hci_dev;
struct resource hci_res[2];
- int ret = -ENOMEM;
+ int ret;
memset(hci_res, 0, sizeof(hci_res));
@@ -183,7 +267,7 @@ static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev, boo
hci_dev = platform_device_alloc(ohci ? "ohci-platform" :
"ehci-platform" , 0);
if (!hci_dev)
- return NULL;
+ return ERR_PTR(-ENOMEM);
hci_dev->dev.parent = &dev->dev;
hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
@@ -214,39 +298,45 @@ err_alloc:
static int bcma_hcd_probe(struct bcma_device *dev)
{
int err;
- u16 chipid_top;
u32 ohci_addr;
struct bcma_hcd_device *usb_dev;
struct bcma_chipinfo *chipinfo;
chipinfo = &dev->bus->chipinfo;
- /* USBcores are only connected on embedded devices. */
- chipid_top = (chipinfo->id & 0xFF00);
- if (chipid_top != 0x4700 && chipid_top != 0x5300)
- return -ENODEV;
/* TODO: Probably need checks here; is the core connected? */
if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
return -EOPNOTSUPP;
- usb_dev = kzalloc(sizeof(struct bcma_hcd_device), GFP_KERNEL);
+ usb_dev = devm_kzalloc(&dev->dev, sizeof(struct bcma_hcd_device),
+ GFP_KERNEL);
if (!usb_dev)
return -ENOMEM;
- bcma_hcd_init_chip(dev);
+ bcma_hci_platform_power_gpio(dev, true);
+
+ switch (dev->id.id) {
+ case BCMA_CORE_NS_USB20:
+ bcma_hcd_init_chip_arm(dev);
+ break;
+ case BCMA_CORE_USB20_HOST:
+ bcma_hcd_init_chip_mips(dev);
+ break;
+ default:
+ return -ENODEV;
+ }
/* In AI chips EHCI is addrspace 0, OHCI is 1 */
ohci_addr = dev->addr_s[0];
- if ((chipinfo->id == 0x5357 || chipinfo->id == 0x4749)
+ if ((chipinfo->id == BCMA_CHIP_ID_BCM5357 ||
+ chipinfo->id == BCMA_CHIP_ID_BCM4749)
&& chipinfo->rev == 0)
ohci_addr = 0x18009000;
usb_dev->ohci_dev = bcma_hcd_create_pdev(dev, true, ohci_addr);
- if (IS_ERR(usb_dev->ohci_dev)) {
- err = PTR_ERR(usb_dev->ohci_dev);
- goto err_free_usb_dev;
- }
+ if (IS_ERR(usb_dev->ohci_dev))
+ return PTR_ERR(usb_dev->ohci_dev);
usb_dev->ehci_dev = bcma_hcd_create_pdev(dev, false, dev->addr);
if (IS_ERR(usb_dev->ehci_dev)) {
@@ -259,8 +349,6 @@ static int bcma_hcd_probe(struct bcma_device *dev)
err_unregister_ohci_dev:
platform_device_unregister(usb_dev->ohci_dev);
-err_free_usb_dev:
- kfree(usb_dev);
return err;
}
@@ -280,6 +368,7 @@ static void bcma_hcd_remove(struct bcma_device *dev)
static void bcma_hcd_shutdown(struct bcma_device *dev)
{
+ bcma_hci_platform_power_gpio(dev, false);
bcma_core_disable(dev, 0);
}
@@ -287,6 +376,7 @@ static void bcma_hcd_shutdown(struct bcma_device *dev)
static int bcma_hcd_suspend(struct bcma_device *dev)
{
+ bcma_hci_platform_power_gpio(dev, false);
bcma_core_disable(dev, 0);
return 0;
@@ -294,6 +384,7 @@ static int bcma_hcd_suspend(struct bcma_device *dev)
static int bcma_hcd_resume(struct bcma_device *dev)
{
+ bcma_hci_platform_power_gpio(dev, true);
bcma_core_enable(dev, 0);
return 0;
@@ -306,6 +397,7 @@ static int bcma_hcd_resume(struct bcma_device *dev)
static const struct bcma_device_id bcma_hcd_table[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
+ BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS),
{},
};
MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);
diff --git a/kernel/drivers/usb/host/ehci-dbg.c b/kernel/drivers/usb/host/ehci-dbg.c
index 524cbf26d..b26b96e25 100644
--- a/kernel/drivers/usb/host/ehci-dbg.c
+++ b/kernel/drivers/usb/host/ehci-dbg.c
@@ -628,7 +628,8 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
unsigned i;
__hc32 tag;
- if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
+ seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC);
+ if (!seen)
return 0;
seen_count = 0;
diff --git a/kernel/drivers/usb/host/ehci-fsl.c b/kernel/drivers/usb/host/ehci-fsl.c
index ab4eee3df..3b6eb219d 100644
--- a/kernel/drivers/usb/host/ehci-fsl.c
+++ b/kernel/drivers/usb/host/ehci-fsl.c
@@ -1,6 +1,6 @@
/*
* Copyright 2005-2009 MontaVista Software, Inc.
- * Copyright 2008,2012 Freescale Semiconductor, Inc.
+ * Copyright 2008,2012,2015 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -24,29 +24,38 @@
*/
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/err.h>
+#include <linux/usb.h>
+#include <linux/usb/ehci_def.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
+#include "ehci.h"
#include "ehci-fsl.h"
+#define DRIVER_DESC "Freescale EHCI Host controller driver"
+#define DRV_NAME "ehci-fsl"
+
+static struct hc_driver __read_mostly fsl_ehci_hc_driver;
+
/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */
-/**
- * usb_hcd_fsl_probe - initialize FSL-based HCDs
- * @drvier: Driver to be used for this HCD
+/*
+ * fsl_ehci_drv_probe - initialize FSL-based HCDs
* @pdev: USB Host Controller being probed
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller.
*
*/
-static int usb_hcd_fsl_probe(const struct hc_driver *driver,
- struct platform_device *pdev)
+static int fsl_ehci_drv_probe(struct platform_device *pdev)
{
struct fsl_usb2_platform_data *pdata;
struct usb_hcd *hcd;
@@ -86,7 +95,8 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
}
irq = res->start;
- hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+ hcd = usb_create_hcd(&fsl_ehci_hc_driver, &pdev->dev,
+ dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
goto err1;
@@ -117,7 +127,18 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
/* Enable USB controller, 83xx or 8536 */
if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6)
- setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4);
+ clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL,
+ CONTROL_REGISTER_W1C_MASK, 0x4);
+
+ /*
+ * Enable UTMI phy and program PTS field in UTMI mode before asserting
+ * controller reset for USB Controller version 2.5
+ */
+ if (pdata->has_fsl_erratum_a007792) {
+ clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL,
+ CONTROL_REGISTER_W1C_MASK, CTRL_UTMI_PHY_EN);
+ writel(PORT_PTS_UTMI, hcd->regs + FSL_SOC_USB_PORTSC1);
+ }
/* Don't need to set host mode here. It will be done by tdi_reset() */
@@ -159,38 +180,6 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
return retval;
}
-/* may be called without controller electrically present */
-/* may be called with controller, bus, and devices active */
-
-/**
- * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
- * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
- *
- * Reverses the effect of usb_hcd_fsl_probe().
- *
- */
-static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
- struct platform_device *pdev)
-{
- struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
- if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
- otg_set_host(hcd->usb_phy->otg, NULL);
- usb_put_phy(hcd->usb_phy);
- }
-
- usb_remove_hcd(hcd);
-
- /*
- * do platform specific un-initialization:
- * release iomux pins, disable clock, etc.
- */
- if (pdata->exit)
- pdata->exit(pdev);
- usb_put_hcd(hcd);
-}
-
static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
enum fsl_usb2_phy_modes phy_mode,
unsigned int port_offset)
@@ -213,9 +202,11 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
case FSL_USB2_PHY_ULPI:
if (pdata->have_sysif_regs && pdata->controller_ver) {
/* controller version 1.6 or above */
- clrbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
- setbits32(non_ehci + FSL_SOC_USB_CTRL,
- ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN);
+ clrbits32(non_ehci + FSL_SOC_USB_CTRL,
+ CONTROL_REGISTER_W1C_MASK | UTMI_PHY_EN);
+ clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+ CONTROL_REGISTER_W1C_MASK,
+ ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN);
}
portsc |= PORT_PTS_ULPI;
break;
@@ -226,30 +217,33 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
portsc |= PORT_PTS_PTW;
/* fall through */
case FSL_USB2_PHY_UTMI:
+ case FSL_USB2_PHY_UTMI_DUAL:
if (pdata->have_sysif_regs && pdata->controller_ver) {
/* controller version 1.6 or above */
- setbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
+ clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+ CONTROL_REGISTER_W1C_MASK, UTMI_PHY_EN);
mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to
become stable - 10ms*/
}
/* enable UTMI PHY */
if (pdata->have_sysif_regs)
- setbits32(non_ehci + FSL_SOC_USB_CTRL,
- CTRL_UTMI_PHY_EN);
+ clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+ CONTROL_REGISTER_W1C_MASK,
+ CTRL_UTMI_PHY_EN);
portsc |= PORT_PTS_UTMI;
break;
case FSL_USB2_PHY_NONE:
break;
}
- if (pdata->have_sysif_regs &&
- pdata->controller_ver > FSL_USB_VER_1_6 &&
- (phy_mode == FSL_USB2_PHY_ULPI)) {
- /* check PHY_CLK_VALID to get phy clk valid */
- if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) &
- PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0) ||
- in_be32(non_ehci + FSL_SOC_USB_PRICTRL))) {
- dev_warn(hcd->self.controller, "USB PHY clock invalid\n");
+ /*
+ * check PHY_CLK_VALID to determine phy clock presence before writing
+ * to portsc
+ */
+ if (pdata->check_phy_clk_valid) {
+ if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID)) {
+ dev_warn(hcd->self.controller,
+ "USB PHY clock invalid\n");
return -EINVAL;
}
}
@@ -257,7 +251,8 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs)
- setbits32(non_ehci + FSL_SOC_USB_CTRL, USB_CTRL_USB_EN);
+ clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+ CONTROL_REGISTER_W1C_MASK, USB_CTRL_USB_EN);
return 0;
}
@@ -283,6 +278,10 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci)
out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
}
+ /* Deal with USB erratum A-005275 */
+ if (pdata->has_fsl_erratum_a005275 == 1)
+ ehci->has_fsl_hs_errata = 1;
+
if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
(pdata->operating_mode == FSL_USB2_DR_OTG))
if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
@@ -636,79 +635,77 @@ static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
#define ehci_start_port_reset NULL
#endif /* CONFIG_USB_OTG */
+static struct ehci_driver_overrides ehci_fsl_overrides __initdata = {
+ .extra_priv_size = sizeof(struct ehci_fsl),
+ .reset = ehci_fsl_setup,
+};
-static const struct hc_driver ehci_fsl_hc_driver = {
- .description = hcd_name,
- .product_desc = "Freescale On-Chip EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_fsl),
+/**
+ * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_fsl_probe().
+ *
+ */
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_USB2 | HCD_MEMORY | HCD_BH,
+static int fsl_ehci_drv_remove(struct platform_device *pdev)
+{
+ struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
- /*
- * basic lifecycle operations
- */
- .reset = ehci_fsl_setup,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
+ if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
+ otg_set_host(hcd->usb_phy->otg, NULL);
+ usb_put_phy(hcd->usb_phy);
+ }
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
+ usb_remove_hcd(hcd);
/*
- * scheduling support
+ * do platform specific un-initialization:
+ * release iomux pins, disable clock, etc.
*/
- .get_frame_number = ehci_get_frame,
+ if (pdata->exit)
+ pdata->exit(pdev);
+ usb_put_hcd(hcd);
- /*
- * root hub support
- */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
- .start_port_reset = ehci_start_port_reset,
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+ return 0;
+}
+
+static struct platform_driver ehci_fsl_driver = {
+ .probe = fsl_ehci_drv_probe,
+ .remove = fsl_ehci_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "fsl-ehci",
+ .pm = EHCI_FSL_PM_OPS,
+ },
};
-static int ehci_fsl_drv_probe(struct platform_device *pdev)
+static int __init ehci_fsl_init(void)
{
if (usb_disabled())
return -ENODEV;
- /* FIXME we only want one one probe() not two */
- return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
-}
+ pr_info(DRV_NAME ": " DRIVER_DESC "\n");
-static int ehci_fsl_drv_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ ehci_init_driver(&fsl_ehci_hc_driver, &ehci_fsl_overrides);
- /* FIXME we only want one one remove() not two */
- usb_hcd_fsl_remove(hcd, pdev);
- return 0;
+ fsl_ehci_hc_driver.product_desc =
+ "Freescale On-Chip EHCI Host Controller";
+ fsl_ehci_hc_driver.start_port_reset = ehci_start_port_reset;
+
+
+ return platform_driver_register(&ehci_fsl_driver);
}
+module_init(ehci_fsl_init);
-MODULE_ALIAS("platform:fsl-ehci");
+static void __exit ehci_fsl_cleanup(void)
+{
+ platform_driver_unregister(&ehci_fsl_driver);
+}
+module_exit(ehci_fsl_cleanup);
-static struct platform_driver ehci_fsl_driver = {
- .probe = ehci_fsl_drv_probe,
- .remove = ehci_fsl_drv_remove,
- .shutdown = usb_hcd_platform_shutdown,
- .driver = {
- .name = "fsl-ehci",
- .pm = EHCI_FSL_PM_OPS,
- },
-};
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/kernel/drivers/usb/host/ehci-fsl.h b/kernel/drivers/usb/host/ehci-fsl.h
index dbd292e9f..1a8a60a57 100644
--- a/kernel/drivers/usb/host/ehci-fsl.h
+++ b/kernel/drivers/usb/host/ehci-fsl.h
@@ -52,6 +52,7 @@
#define SNOOP_SIZE_2GB 0x1e
/* control Register Bit Masks */
+#define CONTROL_REGISTER_W1C_MASK 0x00020000 /* W1C: PHY_CLK_VALID */
#define ULPI_INT_EN (1<<0)
#define WU_INT_EN (1<<1)
#define USB_CTRL_USB_EN (1<<2)
diff --git a/kernel/drivers/usb/host/ehci-hcd.c b/kernel/drivers/usb/host/ehci-hcd.c
index f4d88dfb2..48c92bf78 100644
--- a/kernel/drivers/usb/host/ehci-hcd.c
+++ b/kernel/drivers/usb/host/ehci-hcd.c
@@ -239,7 +239,7 @@ static void tdi_reset (struct ehci_hcd *ehci)
* Reset a non-running (STS_HALT == 1) controller.
* Must be called with interrupts enabled and the lock not held.
*/
-static int ehci_reset (struct ehci_hcd *ehci)
+int ehci_reset(struct ehci_hcd *ehci)
{
int retval;
u32 command = ehci_readl(ehci, &ehci->regs->command);
@@ -275,6 +275,7 @@ static int ehci_reset (struct ehci_hcd *ehci)
ehci->resuming_ports = 0;
return retval;
}
+EXPORT_SYMBOL_GPL(ehci_reset);
/*
* Idle the controller (turn off the schedules).
@@ -588,7 +589,7 @@ static int ehci_run (struct usb_hcd *hcd)
* streaming mappings for I/O buffers, like pci_map_single(),
* can return segments above 4GB, if the device allows.
*
- * NOTE: the dma mask is visible through dma_supported(), so
+ * NOTE: the dma mask is visible through dev->dma_mask, so
* drivers can pass this info along ... like NETIF_F_HIGHDMA,
* Scsi_Host.highmem_io, and so forth. It's readonly to all
* host side drivers though.
@@ -1250,11 +1251,6 @@ MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR (DRIVER_AUTHOR);
MODULE_LICENSE ("GPL");
-#ifdef CONFIG_USB_EHCI_FSL
-#include "ehci-fsl.c"
-#define PLATFORM_DRIVER ehci_fsl_driver
-#endif
-
#ifdef CONFIG_USB_EHCI_SH
#include "ehci-sh.c"
#define PLATFORM_DRIVER ehci_hcd_sh_driver
diff --git a/kernel/drivers/usb/host/ehci-hub.c b/kernel/drivers/usb/host/ehci-hub.c
index 69208447d..086a7115d 100644
--- a/kernel/drivers/usb/host/ehci-hub.c
+++ b/kernel/drivers/usb/host/ehci-hub.c
@@ -155,7 +155,7 @@ static int ehci_port_change(struct ehci_hcd *ehci)
return 0;
}
-static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
+void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
bool suspending, bool do_wakeup)
{
int port;
@@ -220,6 +220,7 @@ static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
spin_unlock_irq(&ehci->lock);
}
+EXPORT_SYMBOL_GPL(ehci_adjust_port_wakeup_flags);
static int ehci_bus_suspend (struct usb_hcd *hcd)
{
@@ -1220,6 +1221,13 @@ int ehci_hub_control(
*/
ehci->reset_done [wIndex] = jiffies
+ msecs_to_jiffies (50);
+
+ /*
+ * Force full-speed connect for FSL high-speed
+ * erratum; disable HS Chirp by setting PFSC bit
+ */
+ if (ehci_has_fsl_hs_errata(ehci))
+ temp |= (1 << PORTSC_FSL_PFSC);
}
ehci_writel(ehci, temp, status_reg);
break;
diff --git a/kernel/drivers/usb/host/ehci-msm.c b/kernel/drivers/usb/host/ehci-msm.c
index 275c92e53..c4f84c81d 100644
--- a/kernel/drivers/usb/host/ehci-msm.c
+++ b/kernel/drivers/usb/host/ehci-msm.c
@@ -80,12 +80,12 @@ static int ehci_msm_probe(struct platform_device *pdev)
return -ENOMEM;
}
- hcd->irq = platform_get_irq(pdev, 0);
- if (hcd->irq < 0) {
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
dev_err(&pdev->dev, "Unable to get IRQ resource\n");
- ret = hcd->irq;
goto put_hcd;
}
+ hcd->irq = ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
diff --git a/kernel/drivers/usb/host/ehci-orion.c b/kernel/drivers/usb/host/ehci-orion.c
index bfcbb9aa8..ee8d5faa0 100644
--- a/kernel/drivers/usb/host/ehci-orion.c
+++ b/kernel/drivers/usb/host/ehci-orion.c
@@ -224,7 +224,8 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
if (IS_ERR(priv->phy)) {
err = PTR_ERR(priv->phy);
- goto err_phy_get;
+ if (err != -ENOSYS)
+ goto err_phy_get;
} else {
err = phy_init(priv->phy);
if (err)
diff --git a/kernel/drivers/usb/host/ehci-platform.c b/kernel/drivers/usb/host/ehci-platform.c
index d8a75a51d..bd7082f29 100644
--- a/kernel/drivers/usb/host/ehci-platform.c
+++ b/kernel/drivers/usb/host/ehci-platform.c
@@ -19,6 +19,7 @@
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
+#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
@@ -45,6 +46,7 @@ struct ehci_platform_priv {
struct reset_control *rst;
struct phy **phys;
int num_phys;
+ bool reset_on_resume;
};
static const char hcd_name[] = "ehci-platform";
@@ -56,7 +58,6 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int retval;
- hcd->has_tt = pdata->has_tt;
ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
if (pdata->pre_setup) {
@@ -88,15 +89,13 @@ static int ehci_platform_power_on(struct platform_device *dev)
}
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- if (priv->phys[phy_num]) {
- ret = phy_init(priv->phys[phy_num]);
- if (ret)
- goto err_exit_phy;
- ret = phy_power_on(priv->phys[phy_num]);
- if (ret) {
- phy_exit(priv->phys[phy_num]);
- goto err_exit_phy;
- }
+ ret = phy_init(priv->phys[phy_num]);
+ if (ret)
+ goto err_exit_phy;
+ ret = phy_power_on(priv->phys[phy_num]);
+ if (ret) {
+ phy_exit(priv->phys[phy_num]);
+ goto err_exit_phy;
}
}
@@ -104,10 +103,8 @@ static int ehci_platform_power_on(struct platform_device *dev)
err_exit_phy:
while (--phy_num >= 0) {
- if (priv->phys[phy_num]) {
- phy_power_off(priv->phys[phy_num]);
- phy_exit(priv->phys[phy_num]);
- }
+ phy_power_off(priv->phys[phy_num]);
+ phy_exit(priv->phys[phy_num]);
}
err_disable_clks:
while (--clk >= 0)
@@ -123,10 +120,8 @@ static void ehci_platform_power_off(struct platform_device *dev)
int clk, phy_num;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- if (priv->phys[phy_num]) {
- phy_power_off(priv->phys[phy_num]);
- phy_exit(priv->phys[phy_num]);
- }
+ phy_power_off(priv->phys[phy_num]);
+ phy_exit(priv->phys[phy_num]);
}
for (clk = EHCI_MAX_CLKS - 1; clk >= 0; clk--)
@@ -154,7 +149,6 @@ static int ehci_platform_probe(struct platform_device *dev)
struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
struct ehci_platform_priv *priv;
struct ehci_hcd *ehci;
- const char *phy_name;
int err, irq, phy_num, clk = 0;
if (usb_disabled())
@@ -169,8 +163,10 @@ static int ehci_platform_probe(struct platform_device *dev)
err = dma_coerce_mask_and_coherent(&dev->dev,
pdata->dma_mask_64 ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
- if (err)
+ if (err) {
+ dev_err(&dev->dev, "Error: DMA mask configuration failed\n");
return err;
+ }
irq = platform_get_irq(dev, 0);
if (irq < 0) {
@@ -200,40 +196,30 @@ static int ehci_platform_probe(struct platform_device *dev)
if (of_property_read_bool(dev->dev.of_node,
"needs-reset-on-resume"))
- pdata->reset_on_resume = 1;
+ priv->reset_on_resume = true;
+
+ if (of_property_read_bool(dev->dev.of_node,
+ "has-transaction-translator"))
+ hcd->has_tt = 1;
priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
"phys", "#phy-cells");
- priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;
- priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
- sizeof(struct phy *), GFP_KERNEL);
- if (!priv->phys)
- return -ENOMEM;
+ if (priv->num_phys > 0) {
+ priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
+ sizeof(struct phy *), GFP_KERNEL);
+ if (!priv->phys)
+ return -ENOMEM;
+ } else
+ priv->num_phys = 0;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- err = of_property_read_string_index(
- dev->dev.of_node,
- "phy-names", phy_num,
- &phy_name);
-
- if (err < 0) {
- if (priv->num_phys > 1) {
- dev_err(&dev->dev, "phy-names not provided");
- goto err_put_hcd;
- } else
- phy_name = "usb";
- }
-
- priv->phys[phy_num] = devm_phy_get(&dev->dev,
- phy_name);
- if (IS_ERR(priv->phys[phy_num])) {
- err = PTR_ERR(priv->phys[phy_num]);
- if ((priv->num_phys > 1) ||
- (err == -EPROBE_DEFER))
- goto err_put_hcd;
- priv->phys[phy_num] = NULL;
- }
+ priv->phys[phy_num] = devm_of_phy_get_by_index(
+ &dev->dev, dev->dev.of_node, phy_num);
+ if (IS_ERR(priv->phys[phy_num])) {
+ err = PTR_ERR(priv->phys[phy_num]);
+ goto err_put_hcd;
+ }
}
for (clk = 0; clk < EHCI_MAX_CLKS; clk++) {
@@ -264,6 +250,10 @@ static int ehci_platform_probe(struct platform_device *dev)
ehci->big_endian_desc = 1;
if (pdata->big_endian_mmio)
ehci->big_endian_mmio = 1;
+ if (pdata->has_tt)
+ hcd->has_tt = 1;
+ if (pdata->reset_on_resume)
+ priv->reset_on_resume = true;
#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
if (ehci->big_endian_mmio) {
@@ -376,6 +366,7 @@ static int ehci_platform_resume(struct device *dev)
struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
struct platform_device *pdev =
container_of(dev, struct platform_device, dev);
+ struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
if (pdata->power_on) {
int err = pdata->power_on(pdev);
@@ -383,7 +374,7 @@ static int ehci_platform_resume(struct device *dev)
return err;
}
- ehci_resume(hcd, pdata->reset_on_resume);
+ ehci_resume(hcd, priv->reset_on_resume);
return 0;
}
#endif /* CONFIG_PM_SLEEP */
@@ -397,6 +388,12 @@ static const struct of_device_id vt8500_ehci_ids[] = {
};
MODULE_DEVICE_TABLE(of, vt8500_ehci_ids);
+static const struct acpi_device_id ehci_acpi_match[] = {
+ { "PNP0D20", 0 }, /* EHCI controller without debug */
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, ehci_acpi_match);
+
static const struct platform_device_id ehci_platform_table[] = {
{ "ehci-platform", 0 },
{ }
@@ -415,6 +412,7 @@ static struct platform_driver ehci_platform_driver = {
.name = "ehci-platform",
.pm = &ehci_platform_pm_ops,
.of_match_table = vt8500_ehci_ids,
+ .acpi_match_table = ACPI_PTR(ehci_acpi_match),
}
};
diff --git a/kernel/drivers/usb/host/ehci-spear.c b/kernel/drivers/usb/host/ehci-spear.c
index 34e14746b..3c4e52539 100644
--- a/kernel/drivers/usb/host/ehci-spear.c
+++ b/kernel/drivers/usb/host/ehci-spear.c
@@ -149,6 +149,7 @@ static const struct of_device_id spear_ehci_id_table[] = {
{ .compatible = "st,spear600-ehci", },
{ },
};
+MODULE_DEVICE_TABLE(of, spear_ehci_id_table);
static struct platform_driver spear_ehci_hcd_driver = {
.probe = spear_ehci_hcd_drv_probe,
diff --git a/kernel/drivers/usb/host/ehci-st.c b/kernel/drivers/usb/host/ehci-st.c
index 7e4bd39cf..b7c5cfa37 100644
--- a/kernel/drivers/usb/host/ehci-st.c
+++ b/kernel/drivers/usb/host/ehci-st.c
@@ -54,7 +54,6 @@ static int st_ehci_platform_reset(struct usb_hcd *hcd)
struct platform_device *pdev = to_platform_device(hcd->self.controller);
struct usb_ehci_pdata *pdata = dev_get_platdata(&pdev->dev);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- int retval;
u32 threshold;
/* Set EHCI packet buffer IN/OUT threshold to 128 bytes */
@@ -62,11 +61,7 @@ static int st_ehci_platform_reset(struct usb_hcd *hcd)
writel(threshold, hcd->regs + AHB2STBUS_INSREG01);
ehci->caps = hcd->regs + pdata->caps_offset;
- retval = ehci_setup(hcd);
- if (retval)
- return retval;
-
- return 0;
+ return ehci_setup(hcd);
}
static int st_ehci_platform_power_on(struct platform_device *dev)
diff --git a/kernel/drivers/usb/host/ehci-tegra.c b/kernel/drivers/usb/host/ehci-tegra.c
index ff9af29b4..4031b3720 100644
--- a/kernel/drivers/usb/host/ehci-tegra.c
+++ b/kernel/drivers/usb/host/ehci-tegra.c
@@ -304,6 +304,7 @@ struct dma_aligned_buffer {
static void free_dma_aligned_buffer(struct urb *urb)
{
struct dma_aligned_buffer *temp;
+ size_t length;
if (!(urb->transfer_flags & URB_ALIGNED_TEMP_BUFFER))
return;
@@ -311,9 +312,14 @@ static void free_dma_aligned_buffer(struct urb *urb)
temp = container_of(urb->transfer_buffer,
struct dma_aligned_buffer, data);
- if (usb_urb_dir_in(urb))
- memcpy(temp->old_xfer_buffer, temp->data,
- urb->transfer_buffer_length);
+ if (usb_urb_dir_in(urb)) {
+ if (usb_pipeisoc(urb->pipe))
+ length = urb->transfer_buffer_length;
+ else
+ length = urb->actual_length;
+
+ memcpy(temp->old_xfer_buffer, temp->data, length);
+ }
urb->transfer_buffer = temp->old_xfer_buffer;
kfree(temp->kmalloc_ptr);
diff --git a/kernel/drivers/usb/host/ehci.h b/kernel/drivers/usb/host/ehci.h
index 52ef0844a..46f62e41b 100644
--- a/kernel/drivers/usb/host/ehci.h
+++ b/kernel/drivers/usb/host/ehci.h
@@ -215,6 +215,7 @@ struct ehci_hcd { /* one per controller */
/* SILICON QUIRKS */
unsigned no_selective_suspend:1;
unsigned has_fsl_port_bug:1; /* FreeScale */
+ unsigned has_fsl_hs_errata:1; /* Freescale HS quirk */
unsigned big_endian_mmio:1;
unsigned big_endian_desc:1;
unsigned big_endian_capbase:1;
@@ -686,6 +687,17 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
#define ehci_has_fsl_portno_bug(e) (0)
#endif
+#define PORTSC_FSL_PFSC 24 /* Port Force Full-Speed Connect */
+
+#if defined(CONFIG_PPC_85xx)
+/* Some Freescale processors have an erratum (USB A-005275) in which
+ * incoming packets get corrupted in HS mode
+ */
+#define ehci_has_fsl_hs_errata(e) ((e)->has_fsl_hs_errata)
+#else
+#define ehci_has_fsl_hs_errata(e) (0)
+#endif
+
/*
* While most USB host controllers implement their registers in
* little-endian format, a minority (celleb companion chip) implement
@@ -868,10 +880,13 @@ extern void ehci_init_driver(struct hc_driver *drv,
extern int ehci_setup(struct usb_hcd *hcd);
extern int ehci_handshake(struct ehci_hcd *ehci, void __iomem *ptr,
u32 mask, u32 done, int usec);
+extern int ehci_reset(struct ehci_hcd *ehci);
#ifdef CONFIG_PM
extern int ehci_suspend(struct usb_hcd *hcd, bool do_wakeup);
extern int ehci_resume(struct usb_hcd *hcd, bool force_reset);
+extern void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
+ bool suspending, bool do_wakeup);
#endif /* CONFIG_PM */
extern int ehci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
diff --git a/kernel/drivers/usb/host/fotg210-hcd.c b/kernel/drivers/usb/host/fotg210-hcd.c
index 000ed80ab..2341af4f3 100644
--- a/kernel/drivers/usb/host/fotg210-hcd.c
+++ b/kernel/drivers/usb/host/fotg210-hcd.c
@@ -1,5 +1,4 @@
-/*
- * Faraday FOTG210 EHCI-like driver
+/* Faraday FOTG210 EHCI-like driver
*
* Copyright (c) 2013 Faraday Technology Corporation
*
@@ -50,32 +49,29 @@
#include <asm/irq.h>
#include <asm/unaligned.h>
-/*-------------------------------------------------------------------------*/
#define DRIVER_AUTHOR "Yuan-Hsin Chen"
#define DRIVER_DESC "FOTG210 Host Controller (EHCI) Driver"
-
-static const char hcd_name[] = "fotg210_hcd";
+static const char hcd_name[] = "fotg210_hcd";
#undef FOTG210_URB_TRACE
-
#define FOTG210_STATS
/* magic numbers that can affect system performance */
-#define FOTG210_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */
-#define FOTG210_TUNE_RL_HS 4 /* nak throttle; see 4.9 */
-#define FOTG210_TUNE_RL_TT 0
-#define FOTG210_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */
-#define FOTG210_TUNE_MULT_TT 1
-/*
- * Some drivers think it's safe to schedule isochronous transfers more than
- * 256 ms into the future (partly as a result of an old bug in the scheduling
+#define FOTG210_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */
+#define FOTG210_TUNE_RL_HS 4 /* nak throttle; see 4.9 */
+#define FOTG210_TUNE_RL_TT 0
+#define FOTG210_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */
+#define FOTG210_TUNE_MULT_TT 1
+
+/* Some drivers think it's safe to schedule isochronous transfers more than 256
+ * ms into the future (partly as a result of an old bug in the scheduling
* code). In an attempt to avoid trouble, we will use a minimum scheduling
* length of 512 frames instead of 256.
*/
-#define FOTG210_TUNE_FLS 1 /* (medium) 512-frame schedule */
+#define FOTG210_TUNE_FLS 1 /* (medium) 512-frame schedule */
/* Initial IRQ latency: faster than hw default */
-static int log2_irq_thresh; /* 0 to 6 */
+static int log2_irq_thresh; /* 0 to 6 */
module_param(log2_irq_thresh, int, S_IRUGO);
MODULE_PARM_DESC(log2_irq_thresh, "log2 IRQ latency, 1-64 microframes");
@@ -89,66 +85,57 @@ static unsigned int hird;
module_param(hird, int, S_IRUGO);
MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
-#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
+#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
#include "fotg210.h"
-/*-------------------------------------------------------------------------*/
-
#define fotg210_dbg(fotg210, fmt, args...) \
- dev_dbg(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_dbg(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
#define fotg210_err(fotg210, fmt, args...) \
- dev_err(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_err(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
#define fotg210_info(fotg210, fmt, args...) \
- dev_info(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_info(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
#define fotg210_warn(fotg210, fmt, args...) \
- dev_warn(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_warn(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
-/* check the values in the HCSPARAMS register
- * (host controller _Structural_ parameters)
- * see EHCI spec, Table 2-4 for each value
+/* check the values in the HCSPARAMS register (host controller _Structural_
+ * parameters) see EHCI spec, Table 2-4 for each value
*/
static void dbg_hcs_params(struct fotg210_hcd *fotg210, char *label)
{
- u32 params = fotg210_readl(fotg210, &fotg210->caps->hcs_params);
+ u32 params = fotg210_readl(fotg210, &fotg210->caps->hcs_params);
- fotg210_dbg(fotg210,
- "%s hcs_params 0x%x ports=%d\n",
- label, params,
- HCS_N_PORTS(params)
- );
+ fotg210_dbg(fotg210, "%s hcs_params 0x%x ports=%d\n", label, params,
+ HCS_N_PORTS(params));
}
-/* check the values in the HCCPARAMS register
- * (host controller _Capability_ parameters)
- * see EHCI Spec, Table 2-5 for each value
- * */
+/* check the values in the HCCPARAMS register (host controller _Capability_
+ * parameters) see EHCI Spec, Table 2-5 for each value
+ */
static void dbg_hcc_params(struct fotg210_hcd *fotg210, char *label)
{
- u32 params = fotg210_readl(fotg210, &fotg210->caps->hcc_params);
+ u32 params = fotg210_readl(fotg210, &fotg210->caps->hcc_params);
- fotg210_dbg(fotg210,
- "%s hcc_params %04x uframes %s%s\n",
- label,
- params,
- HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
- HCC_CANPARK(params) ? " park" : "");
+ fotg210_dbg(fotg210, "%s hcc_params %04x uframes %s%s\n", label,
+ params,
+ HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
+ HCC_CANPARK(params) ? " park" : "");
}
static void __maybe_unused
dbg_qtd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd)
{
fotg210_dbg(fotg210, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
- hc32_to_cpup(fotg210, &qtd->hw_next),
- hc32_to_cpup(fotg210, &qtd->hw_alt_next),
- hc32_to_cpup(fotg210, &qtd->hw_token),
- hc32_to_cpup(fotg210, &qtd->hw_buf[0]));
+ hc32_to_cpup(fotg210, &qtd->hw_next),
+ hc32_to_cpup(fotg210, &qtd->hw_alt_next),
+ hc32_to_cpup(fotg210, &qtd->hw_token),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[0]));
if (qtd->hw_buf[1])
fotg210_dbg(fotg210, " p1=%08x p2=%08x p3=%08x p4=%08x\n",
- hc32_to_cpup(fotg210, &qtd->hw_buf[1]),
- hc32_to_cpup(fotg210, &qtd->hw_buf[2]),
- hc32_to_cpup(fotg210, &qtd->hw_buf[3]),
- hc32_to_cpup(fotg210, &qtd->hw_buf[4]));
+ hc32_to_cpup(fotg210, &qtd->hw_buf[1]),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[2]),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[3]),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[4]));
}
static void __maybe_unused
@@ -156,101 +143,100 @@ dbg_qh(const char *label, struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
struct fotg210_qh_hw *hw = qh->hw;
- fotg210_dbg(fotg210, "%s qh %p n%08x info %x %x qtd %x\n", label,
- qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
+ fotg210_dbg(fotg210, "%s qh %p n%08x info %x %x qtd %x\n", label, qh,
+ hw->hw_next, hw->hw_info1, hw->hw_info2,
+ hw->hw_current);
+
dbg_qtd("overlay", fotg210, (struct fotg210_qtd *) &hw->hw_qtd_next);
}
static void __maybe_unused
dbg_itd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
{
- fotg210_dbg(fotg210, "%s[%d] itd %p, next %08x, urb %p\n",
- label, itd->frame, itd, hc32_to_cpu(fotg210, itd->hw_next),
- itd->urb);
+ fotg210_dbg(fotg210, "%s[%d] itd %p, next %08x, urb %p\n", label,
+ itd->frame, itd, hc32_to_cpu(fotg210, itd->hw_next),
+ itd->urb);
+
fotg210_dbg(fotg210,
- " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
- hc32_to_cpu(fotg210, itd->hw_transaction[0]),
- hc32_to_cpu(fotg210, itd->hw_transaction[1]),
- hc32_to_cpu(fotg210, itd->hw_transaction[2]),
- hc32_to_cpu(fotg210, itd->hw_transaction[3]),
- hc32_to_cpu(fotg210, itd->hw_transaction[4]),
- hc32_to_cpu(fotg210, itd->hw_transaction[5]),
- hc32_to_cpu(fotg210, itd->hw_transaction[6]),
- hc32_to_cpu(fotg210, itd->hw_transaction[7]));
+ " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ hc32_to_cpu(fotg210, itd->hw_transaction[0]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[1]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[2]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[3]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[4]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[5]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[6]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[7]));
+
fotg210_dbg(fotg210,
- " buf: %08x %08x %08x %08x %08x %08x %08x\n",
- hc32_to_cpu(fotg210, itd->hw_bufp[0]),
- hc32_to_cpu(fotg210, itd->hw_bufp[1]),
- hc32_to_cpu(fotg210, itd->hw_bufp[2]),
- hc32_to_cpu(fotg210, itd->hw_bufp[3]),
- hc32_to_cpu(fotg210, itd->hw_bufp[4]),
- hc32_to_cpu(fotg210, itd->hw_bufp[5]),
- hc32_to_cpu(fotg210, itd->hw_bufp[6]));
+ " buf: %08x %08x %08x %08x %08x %08x %08x\n",
+ hc32_to_cpu(fotg210, itd->hw_bufp[0]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[1]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[2]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[3]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[4]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[5]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[6]));
+
fotg210_dbg(fotg210, " index: %d %d %d %d %d %d %d %d\n",
- itd->index[0], itd->index[1], itd->index[2],
- itd->index[3], itd->index[4], itd->index[5],
- itd->index[6], itd->index[7]);
+ itd->index[0], itd->index[1], itd->index[2],
+ itd->index[3], itd->index[4], itd->index[5],
+ itd->index[6], itd->index[7]);
}
static int __maybe_unused
dbg_status_buf(char *buf, unsigned len, const char *label, u32 status)
{
- return scnprintf(buf, len,
- "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
- label, label[0] ? " " : "", status,
- (status & STS_ASS) ? " Async" : "",
- (status & STS_PSS) ? " Periodic" : "",
- (status & STS_RECL) ? " Recl" : "",
- (status & STS_HALT) ? " Halt" : "",
- (status & STS_IAA) ? " IAA" : "",
- (status & STS_FATAL) ? " FATAL" : "",
- (status & STS_FLR) ? " FLR" : "",
- (status & STS_PCD) ? " PCD" : "",
- (status & STS_ERR) ? " ERR" : "",
- (status & STS_INT) ? " INT" : ""
- );
+ return scnprintf(buf, len, "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
+ label, label[0] ? " " : "", status,
+ (status & STS_ASS) ? " Async" : "",
+ (status & STS_PSS) ? " Periodic" : "",
+ (status & STS_RECL) ? " Recl" : "",
+ (status & STS_HALT) ? " Halt" : "",
+ (status & STS_IAA) ? " IAA" : "",
+ (status & STS_FATAL) ? " FATAL" : "",
+ (status & STS_FLR) ? " FLR" : "",
+ (status & STS_PCD) ? " PCD" : "",
+ (status & STS_ERR) ? " ERR" : "",
+ (status & STS_INT) ? " INT" : "");
}
static int __maybe_unused
dbg_intr_buf(char *buf, unsigned len, const char *label, u32 enable)
{
- return scnprintf(buf, len,
- "%s%sintrenable %02x%s%s%s%s%s%s",
- label, label[0] ? " " : "", enable,
- (enable & STS_IAA) ? " IAA" : "",
- (enable & STS_FATAL) ? " FATAL" : "",
- (enable & STS_FLR) ? " FLR" : "",
- (enable & STS_PCD) ? " PCD" : "",
- (enable & STS_ERR) ? " ERR" : "",
- (enable & STS_INT) ? " INT" : ""
- );
+ return scnprintf(buf, len, "%s%sintrenable %02x%s%s%s%s%s%s",
+ label, label[0] ? " " : "", enable,
+ (enable & STS_IAA) ? " IAA" : "",
+ (enable & STS_FATAL) ? " FATAL" : "",
+ (enable & STS_FLR) ? " FLR" : "",
+ (enable & STS_PCD) ? " PCD" : "",
+ (enable & STS_ERR) ? " ERR" : "",
+ (enable & STS_INT) ? " INT" : "");
}
static const char *const fls_strings[] = { "1024", "512", "256", "??" };
-static int
-dbg_command_buf(char *buf, unsigned len, const char *label, u32 command)
+static int dbg_command_buf(char *buf, unsigned len, const char *label,
+ u32 command)
{
return scnprintf(buf, len,
- "%s%scommand %07x %s=%d ithresh=%d%s%s%s "
- "period=%s%s %s",
- label, label[0] ? " " : "", command,
- (command & CMD_PARK) ? " park" : "(park)",
- CMD_PARK_CNT(command),
- (command >> 16) & 0x3f,
- (command & CMD_IAAD) ? " IAAD" : "",
- (command & CMD_ASE) ? " Async" : "",
- (command & CMD_PSE) ? " Periodic" : "",
- fls_strings[(command >> 2) & 0x3],
- (command & CMD_RESET) ? " Reset" : "",
- (command & CMD_RUN) ? "RUN" : "HALT"
- );
-}
-
-static char
-*dbg_port_buf(char *buf, unsigned len, const char *label, int port, u32 status)
-{
- char *sig;
+ "%s%scommand %07x %s=%d ithresh=%d%s%s%s period=%s%s %s",
+ label, label[0] ? " " : "", command,
+ (command & CMD_PARK) ? " park" : "(park)",
+ CMD_PARK_CNT(command),
+ (command >> 16) & 0x3f,
+ (command & CMD_IAAD) ? " IAAD" : "",
+ (command & CMD_ASE) ? " Async" : "",
+ (command & CMD_PSE) ? " Periodic" : "",
+ fls_strings[(command >> 2) & 0x3],
+ (command & CMD_RESET) ? " Reset" : "",
+ (command & CMD_RUN) ? "RUN" : "HALT");
+}
+
+static char *dbg_port_buf(char *buf, unsigned len, const char *label, int port,
+ u32 status)
+{
+ char *sig;
/* signaling state */
switch (status & (3 << 10)) {
@@ -268,44 +254,41 @@ static char
break;
}
- scnprintf(buf, len,
- "%s%sport:%d status %06x %d "
- "sig=%s%s%s%s%s%s%s%s",
- label, label[0] ? " " : "", port, status,
- status>>25,/*device address */
- sig,
- (status & PORT_RESET) ? " RESET" : "",
- (status & PORT_SUSPEND) ? " SUSPEND" : "",
- (status & PORT_RESUME) ? " RESUME" : "",
- (status & PORT_PEC) ? " PEC" : "",
- (status & PORT_PE) ? " PE" : "",
- (status & PORT_CSC) ? " CSC" : "",
- (status & PORT_CONNECT) ? " CONNECT" : "");
+ scnprintf(buf, len, "%s%sport:%d status %06x %d sig=%s%s%s%s%s%s%s%s",
+ label, label[0] ? " " : "", port, status,
+ status >> 25, /*device address */
+ sig,
+ (status & PORT_RESET) ? " RESET" : "",
+ (status & PORT_SUSPEND) ? " SUSPEND" : "",
+ (status & PORT_RESUME) ? " RESUME" : "",
+ (status & PORT_PEC) ? " PEC" : "",
+ (status & PORT_PE) ? " PE" : "",
+ (status & PORT_CSC) ? " CSC" : "",
+ (status & PORT_CONNECT) ? " CONNECT" : "");
+
return buf;
}
/* functions have the "wrong" filename when they're output... */
-#define dbg_status(fotg210, label, status) { \
- char _buf[80]; \
- dbg_status_buf(_buf, sizeof(_buf), label, status); \
- fotg210_dbg(fotg210, "%s\n", _buf); \
+#define dbg_status(fotg210, label, status) { \
+ char _buf[80]; \
+ dbg_status_buf(_buf, sizeof(_buf), label, status); \
+ fotg210_dbg(fotg210, "%s\n", _buf); \
}
-#define dbg_cmd(fotg210, label, command) { \
- char _buf[80]; \
- dbg_command_buf(_buf, sizeof(_buf), label, command); \
- fotg210_dbg(fotg210, "%s\n", _buf); \
+#define dbg_cmd(fotg210, label, command) { \
+ char _buf[80]; \
+ dbg_command_buf(_buf, sizeof(_buf), label, command); \
+ fotg210_dbg(fotg210, "%s\n", _buf); \
}
-#define dbg_port(fotg210, label, port, status) { \
- char _buf[80]; \
- fotg210_dbg(fotg210, "%s\n", dbg_port_buf(_buf, sizeof(_buf), label, port, status) ); \
+#define dbg_port(fotg210, label, port, status) { \
+ char _buf[80]; \
+ fotg210_dbg(fotg210, "%s\n", \
+ dbg_port_buf(_buf, sizeof(_buf), label, port, status));\
}
-/*-------------------------------------------------------------------------*/
-
/* troubleshooting help: expose state in debugfs */
-
static int debug_async_open(struct inode *, struct file *);
static int debug_periodic_open(struct inode *, struct file *);
static int debug_registers_open(struct inode *, struct file *);
@@ -347,17 +330,22 @@ struct debug_buffer {
size_t alloc_size;
};
-#define speed_char(info1)({ char tmp; \
- switch (info1 & (3 << 12)) { \
- case QH_FULL_SPEED: \
- tmp = 'f'; break; \
- case QH_LOW_SPEED: \
- tmp = 'l'; break; \
- case QH_HIGH_SPEED: \
- tmp = 'h'; break; \
- default: \
- tmp = '?'; break; \
- } tmp; })
+static inline char speed_char(u32 scratch)
+{
+ switch (scratch & (3 << 12)) {
+ case QH_FULL_SPEED:
+ return 'f';
+
+ case QH_LOW_SPEED:
+ return 'l';
+
+ case QH_HIGH_SPEED:
+ return 'h';
+
+ default:
+ return '?';
+ }
+}
static inline char token_mark(struct fotg210_hcd *fotg210, __hc32 token)
{
@@ -373,33 +361,29 @@ static inline char token_mark(struct fotg210_hcd *fotg210, __hc32 token)
return '/';
}
-static void qh_lines(
- struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh,
- char **nextp,
- unsigned *sizep
-)
-{
- u32 scratch;
- u32 hw_curr;
- struct fotg210_qtd *td;
- unsigned temp;
- unsigned size = *sizep;
- char *next = *nextp;
- char mark;
- __le32 list_end = FOTG210_LIST_END(fotg210);
- struct fotg210_qh_hw *hw = qh->hw;
-
- if (hw->hw_qtd_next == list_end) /* NEC does this */
+static void qh_lines(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
+ char **nextp, unsigned *sizep)
+{
+ u32 scratch;
+ u32 hw_curr;
+ struct fotg210_qtd *td;
+ unsigned temp;
+ unsigned size = *sizep;
+ char *next = *nextp;
+ char mark;
+ __le32 list_end = FOTG210_LIST_END(fotg210);
+ struct fotg210_qh_hw *hw = qh->hw;
+
+ if (hw->hw_qtd_next == list_end) /* NEC does this */
mark = '@';
else
mark = token_mark(fotg210, hw->hw_token);
- if (mark == '/') { /* qh_alt_next controls qh advance? */
- if ((hw->hw_alt_next & QTD_MASK(fotg210))
- == fotg210->async->hw->hw_alt_next)
- mark = '#'; /* blocked */
+ if (mark == '/') { /* qh_alt_next controls qh advance? */
+ if ((hw->hw_alt_next & QTD_MASK(fotg210)) ==
+ fotg210->async->hw->hw_alt_next)
+ mark = '#'; /* blocked */
else if (hw->hw_alt_next == list_end)
- mark = '.'; /* use hw_qtd_next */
+ mark = '.'; /* use hw_qtd_next */
/* else alt_next points to some other qtd */
}
scratch = hc32_to_cpup(fotg210, &hw->hw_info1);
@@ -462,6 +446,7 @@ static void qh_lines(
temp = snprintf(next, size, "\n");
if (size < temp)
temp = size;
+
size -= temp;
next += temp;
@@ -472,12 +457,12 @@ done:
static ssize_t fill_async_buffer(struct debug_buffer *buf)
{
- struct usb_hcd *hcd;
- struct fotg210_hcd *fotg210;
- unsigned long flags;
- unsigned temp, size;
- char *next;
- struct fotg210_qh *qh;
+ struct usb_hcd *hcd;
+ struct fotg210_hcd *fotg210;
+ unsigned long flags;
+ unsigned temp, size;
+ char *next;
+ struct fotg210_qh *qh;
hcd = bus_to_hcd(buf->bus);
fotg210 = hcd_to_fotg210(hcd);
@@ -492,7 +477,7 @@ static ssize_t fill_async_buffer(struct debug_buffer *buf)
*/
spin_lock_irqsave(&fotg210->lock, flags);
for (qh = fotg210->async->qh_next.qh; size > 0 && qh;
- qh = qh->qh_next.qh)
+ qh = qh->qh_next.qh)
qh_lines(fotg210, qh, &next, &size);
if (fotg210->async_unlink && size > 0) {
temp = scnprintf(next, size, "\nunlink =\n");
@@ -508,21 +493,50 @@ static ssize_t fill_async_buffer(struct debug_buffer *buf)
return strlen(buf->output_buf);
}
+/* count tds, get ep direction */
+static unsigned output_buf_tds_dir(char *buf, struct fotg210_hcd *fotg210,
+ struct fotg210_qh_hw *hw, struct fotg210_qh *qh, unsigned size)
+{
+ u32 scratch = hc32_to_cpup(fotg210, &hw->hw_info1);
+ struct fotg210_qtd *qtd;
+ char *type = "";
+ unsigned temp = 0;
+
+ /* count tds, get ep direction */
+ list_for_each_entry(qtd, &qh->qtd_list, qtd_list) {
+ temp++;
+ switch ((hc32_to_cpu(fotg210, qtd->hw_token) >> 8) & 0x03) {
+ case 0:
+ type = "out";
+ continue;
+ case 1:
+ type = "in";
+ continue;
+ }
+ }
+
+ return scnprintf(buf, size, "(%c%d ep%d%s [%d/%d] q%d p%d)",
+ speed_char(scratch), scratch & 0x007f,
+ (scratch >> 8) & 0x000f, type, qh->usecs,
+ qh->c_usecs, temp, (scratch >> 16) & 0x7ff);
+}
+
#define DBG_SCHED_LIMIT 64
static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
{
- struct usb_hcd *hcd;
- struct fotg210_hcd *fotg210;
- unsigned long flags;
- union fotg210_shadow p, *seen;
- unsigned temp, size, seen_count;
- char *next;
- unsigned i;
- __hc32 tag;
-
- seen = kmalloc(DBG_SCHED_LIMIT * sizeof(*seen), GFP_ATOMIC);
+ struct usb_hcd *hcd;
+ struct fotg210_hcd *fotg210;
+ unsigned long flags;
+ union fotg210_shadow p, *seen;
+ unsigned temp, size, seen_count;
+ char *next;
+ unsigned i;
+ __hc32 tag;
+
+ seen = kmalloc_array(DBG_SCHED_LIMIT, sizeof(*seen), GFP_ATOMIC);
if (!seen)
return 0;
+
seen_count = 0;
hcd = bus_to_hcd(buf->bus);
@@ -542,6 +556,7 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
p = fotg210->pshadow[i];
if (likely(!p.ptr))
continue;
+
tag = Q_NEXT_TYPE(fotg210, fotg210->periodic[i]);
temp = scnprintf(next, size, "%4d: ", i);
@@ -569,7 +584,7 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
continue;
if (p.qh->qh_next.ptr) {
temp = scnprintf(next, size,
- " ...");
+ " ...");
size -= temp;
next += temp;
}
@@ -577,38 +592,9 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
}
/* show more info the first time around */
if (temp == seen_count) {
- u32 scratch = hc32_to_cpup(fotg210,
- &hw->hw_info1);
- struct fotg210_qtd *qtd;
- char *type = "";
-
- /* count tds, get ep direction */
- temp = 0;
- list_for_each_entry(qtd,
- &p.qh->qtd_list,
- qtd_list) {
- temp++;
- switch (0x03 & (hc32_to_cpu(
- fotg210,
- qtd->hw_token) >> 8)) {
- case 0:
- type = "out";
- continue;
- case 1:
- type = "in";
- continue;
- }
- }
-
- temp = scnprintf(next, size,
- "(%c%d ep%d%s "
- "[%d/%d] q%d p%d)",
- speed_char(scratch),
- scratch & 0x007f,
- (scratch >> 8) & 0x000f, type,
- p.qh->usecs, p.qh->c_usecs,
- temp,
- 0x7ff & (scratch >> 16));
+ temp = output_buf_tds_dir(next,
+ fotg210, hw,
+ p.qh, size);
if (seen_count < DBG_SCHED_LIMIT)
seen[seen_count++].qh = p.qh;
@@ -619,14 +605,14 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
break;
case Q_TYPE_FSTN:
temp = scnprintf(next, size,
- " fstn-%8x/%p", p.fstn->hw_prev,
- p.fstn);
+ " fstn-%8x/%p",
+ p.fstn->hw_prev, p.fstn);
tag = Q_NEXT_TYPE(fotg210, p.fstn->hw_next);
p = p.fstn->fstn_next;
break;
case Q_TYPE_ITD:
temp = scnprintf(next, size,
- " itd/%p", p.itd);
+ " itd/%p", p.itd);
tag = Q_NEXT_TYPE(fotg210, p.itd->hw_next);
p = p.itd->itd_next;
break;
@@ -663,13 +649,13 @@ static const char *rh_state_string(struct fotg210_hcd *fotg210)
static ssize_t fill_registers_buffer(struct debug_buffer *buf)
{
- struct usb_hcd *hcd;
- struct fotg210_hcd *fotg210;
- unsigned long flags;
- unsigned temp, size, i;
- char *next, scratch[80];
- static const char fmt[] = "%*s\n";
- static const char label[] = "";
+ struct usb_hcd *hcd;
+ struct fotg210_hcd *fotg210;
+ unsigned long flags;
+ unsigned temp, size, i;
+ char *next, scratch[80];
+ static const char fmt[] = "%*s\n";
+ static const char label[] = "";
hcd = bus_to_hcd(buf->bus);
fotg210 = hcd_to_fotg210(hcd);
@@ -680,26 +666,26 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
if (!HCD_HW_ACCESSIBLE(hcd)) {
size = scnprintf(next, size,
- "bus %s, device %s\n"
- "%s\n"
- "SUSPENDED(no register access)\n",
- hcd->self.controller->bus->name,
- dev_name(hcd->self.controller),
- hcd->product_desc);
+ "bus %s, device %s\n"
+ "%s\n"
+ "SUSPENDED(no register access)\n",
+ hcd->self.controller->bus->name,
+ dev_name(hcd->self.controller),
+ hcd->product_desc);
goto done;
}
/* Capability Registers */
i = HC_VERSION(fotg210, fotg210_readl(fotg210,
- &fotg210->caps->hc_capbase));
+ &fotg210->caps->hc_capbase));
temp = scnprintf(next, size,
- "bus %s, device %s\n"
- "%s\n"
- "EHCI %x.%02x, rh state %s\n",
- hcd->self.controller->bus->name,
- dev_name(hcd->self.controller),
- hcd->product_desc,
- i >> 8, i & 0x0ff, rh_state_string(fotg210));
+ "bus %s, device %s\n"
+ "%s\n"
+ "EHCI %x.%02x, rh state %s\n",
+ hcd->self.controller->bus->name,
+ dev_name(hcd->self.controller),
+ hcd->product_desc,
+ i >> 8, i & 0x0ff, rh_state_string(fotg210));
size -= temp;
next += temp;
@@ -747,14 +733,14 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
#ifdef FOTG210_STATS
temp = scnprintf(next, size,
- "irq normal %ld err %ld iaa %ld(lost %ld)\n",
- fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa,
- fotg210->stats.lost_iaa);
+ "irq normal %ld err %ld iaa %ld(lost %ld)\n",
+ fotg210->stats.normal, fotg210->stats.error,
+ fotg210->stats.iaa, fotg210->stats.lost_iaa);
size -= temp;
next += temp;
temp = scnprintf(next, size, "complete %ld unlink %ld\n",
- fotg210->stats.complete, fotg210->stats.unlink);
+ fotg210->stats.complete, fotg210->stats.unlink);
size -= temp;
next += temp;
#endif
@@ -765,8 +751,8 @@ done:
return buf->alloc_size - size;
}
-static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
- ssize_t (*fill_func)(struct debug_buffer *))
+static struct debug_buffer
+*alloc_buffer(struct usb_bus *bus, ssize_t (*fill_func)(struct debug_buffer *))
{
struct debug_buffer *buf;
@@ -806,7 +792,7 @@ out:
}
static ssize_t debug_output(struct file *file, char __user *user_buf,
- size_t len, loff_t *offset)
+ size_t len, loff_t *offset)
{
struct debug_buffer *buf = file->private_data;
int ret = 0;
@@ -822,7 +808,7 @@ static ssize_t debug_output(struct file *file, char __user *user_buf,
mutex_unlock(&buf->mutex);
ret = simple_read_from_buffer(user_buf, len, offset,
- buf->output_buf, buf->count);
+ buf->output_buf, buf->count);
out:
return ret;
@@ -850,6 +836,7 @@ static int debug_async_open(struct inode *inode, struct file *file)
static int debug_periodic_open(struct inode *inode, struct file *file)
{
struct debug_buffer *buf;
+
buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
if (!buf)
return -ENOMEM;
@@ -862,7 +849,7 @@ static int debug_periodic_open(struct inode *inode, struct file *file)
static int debug_registers_open(struct inode *inode, struct file *file)
{
file->private_data = alloc_buffer(inode->i_private,
- fill_registers_buffer);
+ fill_registers_buffer);
return file->private_data ? 0 : -ENOMEM;
}
@@ -872,20 +859,20 @@ static inline void create_debug_files(struct fotg210_hcd *fotg210)
struct usb_bus *bus = &fotg210_to_hcd(fotg210)->self;
fotg210->debug_dir = debugfs_create_dir(bus->bus_name,
- fotg210_debug_root);
+ fotg210_debug_root);
if (!fotg210->debug_dir)
return;
if (!debugfs_create_file("async", S_IRUGO, fotg210->debug_dir, bus,
- &debug_async_fops))
+ &debug_async_fops))
goto file_error;
if (!debugfs_create_file("periodic", S_IRUGO, fotg210->debug_dir, bus,
- &debug_periodic_fops))
+ &debug_periodic_fops))
goto file_error;
if (!debugfs_create_file("registers", S_IRUGO, fotg210->debug_dir, bus,
- &debug_registers_fops))
+ &debug_registers_fops))
goto file_error;
return;
@@ -899,10 +886,7 @@ static inline void remove_debug_files(struct fotg210_hcd *fotg210)
debugfs_remove_recursive(fotg210->debug_dir);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * handshake - spin reading hc until handshake completes or fails
+/* handshake - spin reading hc until handshake completes or fails
* @ptr: address of hc register to be read
* @mask: bits to look at in result of read
* @done: value of those bits when handshake succeeds
@@ -919,9 +903,9 @@ static inline void remove_debug_files(struct fotg210_hcd *fotg210)
* bridge shutdown: shutting down the bridge before the devices using it.
*/
static int handshake(struct fotg210_hcd *fotg210, void __iomem *ptr,
- u32 mask, u32 done, int usec)
+ u32 mask, u32 done, int usec)
{
- u32 result;
+ u32 result;
do {
result = fotg210_readl(fotg210, ptr);
@@ -936,13 +920,12 @@ static int handshake(struct fotg210_hcd *fotg210, void __iomem *ptr,
return -ETIMEDOUT;
}
-/*
- * Force HC to halt state from unknown (EHCI spec section 2.3).
+/* Force HC to halt state from unknown (EHCI spec section 2.3).
* Must be called with interrupts enabled and the lock not held.
*/
static int fotg210_halt(struct fotg210_hcd *fotg210)
{
- u32 temp;
+ u32 temp;
spin_lock_irq(&fotg210->lock);
@@ -962,20 +945,20 @@ static int fotg210_halt(struct fotg210_hcd *fotg210)
synchronize_irq(fotg210_to_hcd(fotg210)->irq);
return handshake(fotg210, &fotg210->regs->status,
- STS_HALT, STS_HALT, 16 * 125);
+ STS_HALT, STS_HALT, 16 * 125);
}
-/*
- * Reset a non-running (STS_HALT == 1) controller.
+/* Reset a non-running (STS_HALT == 1) controller.
* Must be called with interrupts enabled and the lock not held.
*/
static int fotg210_reset(struct fotg210_hcd *fotg210)
{
- int retval;
- u32 command = fotg210_readl(fotg210, &fotg210->regs->command);
+ int retval;
+ u32 command = fotg210_readl(fotg210, &fotg210->regs->command);
/* If the EHCI debug controller is active, special care must be
- * taken before and after a host controller reset */
+ * taken before and after a host controller reset
+ */
if (fotg210->debug && !dbgp_reset_prep(fotg210_to_hcd(fotg210)))
fotg210->debug = NULL;
@@ -985,7 +968,7 @@ static int fotg210_reset(struct fotg210_hcd *fotg210)
fotg210->rh_state = FOTG210_RH_HALTED;
fotg210->next_statechange = jiffies;
retval = handshake(fotg210, &fotg210->regs->command,
- CMD_RESET, 0, 250 * 1000);
+ CMD_RESET, 0, 250 * 1000);
if (retval)
return retval;
@@ -998,13 +981,12 @@ static int fotg210_reset(struct fotg210_hcd *fotg210)
return retval;
}
-/*
- * Idle the controller (turn off the schedules).
+/* Idle the controller (turn off the schedules).
* Must be called with interrupts enabled and the lock not held.
*/
static void fotg210_quiesce(struct fotg210_hcd *fotg210)
{
- u32 temp;
+ u32 temp;
if (fotg210->rh_state != FOTG210_RH_RUNNING)
return;
@@ -1012,7 +994,7 @@ static void fotg210_quiesce(struct fotg210_hcd *fotg210)
/* wait for any schedule enables/disables to take effect */
temp = (fotg210->command << 10) & (STS_ASS | STS_PSS);
handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, temp,
- 16 * 125);
+ 16 * 125);
/* then disable anything that's still active */
spin_lock_irq(&fotg210->lock);
@@ -1022,11 +1004,9 @@ static void fotg210_quiesce(struct fotg210_hcd *fotg210)
/* hardware can take 16 microframes to turn off ... */
handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, 0,
- 16 * 125);
+ 16 * 125);
}
-/*-------------------------------------------------------------------------*/
-
static void end_unlink_async(struct fotg210_hcd *fotg210);
static void unlink_empty_async(struct fotg210_hcd *fotg210);
static void fotg210_work(struct fotg210_hcd *fotg210);
@@ -1034,8 +1014,6 @@ static void start_unlink_intr(struct fotg210_hcd *fotg210,
struct fotg210_qh *qh);
static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
-/*-------------------------------------------------------------------------*/
-
/* Set a bit in the USBCMD register */
static void fotg210_set_command_bit(struct fotg210_hcd *fotg210, u32 bit)
{
@@ -1056,10 +1034,7 @@ static void fotg210_clear_command_bit(struct fotg210_hcd *fotg210, u32 bit)
fotg210_readl(fotg210, &fotg210->regs->command);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI timer support... Now using hrtimers.
+/* EHCI timer support... Now using hrtimers.
*
* Lots of different events are triggered from fotg210->hrtimer. Whenever
* the timer routine runs, it checks each possible event; events that are
@@ -1081,8 +1056,7 @@ static void fotg210_clear_command_bit(struct fotg210_hcd *fotg210, u32 bit)
* allow for an expiration range of 1 ms.
*/
-/*
- * Delay lengths for the hrtimer event types.
+/* Delay lengths for the hrtimer event types.
* Keep this list sorted by delay length, in the same order as
* the event types indexed by enum fotg210_hrtimer_event in fotg210.h.
*/
@@ -1103,7 +1077,7 @@ static unsigned event_delays_ns[] = {
static void fotg210_enable_event(struct fotg210_hcd *fotg210, unsigned event,
bool resched)
{
- ktime_t *timeout = &fotg210->hr_timeouts[event];
+ ktime_t *timeout = &fotg210->hr_timeouts[event];
if (resched)
*timeout = ktime_add(ktime_get(),
@@ -1122,7 +1096,7 @@ static void fotg210_enable_event(struct fotg210_hcd *fotg210, unsigned event,
/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */
static void fotg210_poll_ASS(struct fotg210_hcd *fotg210)
{
- unsigned actual, want;
+ unsigned actual, want;
/* Don't enable anything if the controller isn't running (e.g., died) */
if (fotg210->rh_state != FOTG210_RH_RUNNING)
@@ -1136,7 +1110,7 @@ static void fotg210_poll_ASS(struct fotg210_hcd *fotg210)
/* Poll again later, but give up after about 20 ms */
if (fotg210->ASS_poll_count++ < 20) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_ASS,
- true);
+ true);
return;
}
fotg210_dbg(fotg210, "Waited too long for the async schedule status (%x/%x), giving up\n",
@@ -1154,8 +1128,8 @@ static void fotg210_poll_ASS(struct fotg210_hcd *fotg210)
/* Turn off the schedule after a while */
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_DISABLE_ASYNC,
- true);
+ FOTG210_HRTIMER_DISABLE_ASYNC,
+ true);
}
}
}
@@ -1170,7 +1144,7 @@ static void fotg210_disable_ASE(struct fotg210_hcd *fotg210)
/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */
static void fotg210_poll_PSS(struct fotg210_hcd *fotg210)
{
- unsigned actual, want;
+ unsigned actual, want;
/* Don't do anything if the controller isn't running (e.g., died) */
if (fotg210->rh_state != FOTG210_RH_RUNNING)
@@ -1184,7 +1158,7 @@ static void fotg210_poll_PSS(struct fotg210_hcd *fotg210)
/* Poll again later, but give up after about 20 ms */
if (fotg210->PSS_poll_count++ < 20) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_PSS,
- true);
+ true);
return;
}
fotg210_dbg(fotg210, "Waited too long for the periodic schedule status (%x/%x), giving up\n",
@@ -1202,8 +1176,8 @@ static void fotg210_poll_PSS(struct fotg210_hcd *fotg210)
/* Turn off the schedule after a while */
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_DISABLE_PERIODIC,
- true);
+ FOTG210_HRTIMER_DISABLE_PERIODIC,
+ true);
}
}
}
@@ -1224,7 +1198,7 @@ static void fotg210_handle_controller_death(struct fotg210_hcd *fotg210)
if (fotg210->died_poll_count++ < 5) {
/* Try again later */
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_POLL_DEAD, true);
+ FOTG210_HRTIMER_POLL_DEAD, true);
return;
}
fotg210_warn(fotg210, "Waited too long for the controller to stop, giving up\n");
@@ -1243,7 +1217,7 @@ static void fotg210_handle_controller_death(struct fotg210_hcd *fotg210)
/* Handle unlinked interrupt QHs once they are gone from the hardware */
static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210)
{
- bool stopped = (fotg210->rh_state < FOTG210_RH_RUNNING);
+ bool stopped = (fotg210->rh_state < FOTG210_RH_RUNNING);
/*
* Process all the QHs on the intr_unlink list that were added
@@ -1254,7 +1228,7 @@ static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210)
*/
fotg210->intr_unlinking = true;
while (fotg210->intr_unlink) {
- struct fotg210_qh *qh = fotg210->intr_unlink;
+ struct fotg210_qh *qh = fotg210->intr_unlink;
if (!stopped && qh->unlink_cycle == fotg210->intr_unlink_cycle)
break;
@@ -1266,7 +1240,7 @@ static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210)
/* Handle remaining entries later */
if (fotg210->intr_unlink) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR,
- true);
+ true);
++fotg210->intr_unlink_cycle;
}
fotg210->intr_unlinking = false;
@@ -1288,7 +1262,7 @@ static void start_free_itds(struct fotg210_hcd *fotg210)
/* Wait for controller to stop using old iTDs and siTDs */
static void end_free_itds(struct fotg210_hcd *fotg210)
{
- struct fotg210_itd *itd, *n;
+ struct fotg210_itd *itd, *n;
if (fotg210->rh_state < FOTG210_RH_RUNNING)
fotg210->last_itd_to_free = NULL;
@@ -1339,7 +1313,7 @@ static void fotg210_iaa_watchdog(struct fotg210_hcd *fotg210)
if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
COUNT(fotg210->stats.lost_iaa);
fotg210_writel(fotg210, STS_IAA,
- &fotg210->regs->status);
+ &fotg210->regs->status);
}
fotg210_dbg(fotg210, "IAA watchdog: status %x cmd %x\n",
@@ -1355,7 +1329,7 @@ static void turn_on_io_watchdog(struct fotg210_hcd *fotg210)
/* Not needed if the controller isn't running or it's already enabled */
if (fotg210->rh_state != FOTG210_RH_RUNNING ||
(fotg210->enabled_hrtimer_events &
- BIT(FOTG210_HRTIMER_IO_WATCHDOG)))
+ BIT(FOTG210_HRTIMER_IO_WATCHDOG)))
return;
/*
@@ -1365,12 +1339,11 @@ static void turn_on_io_watchdog(struct fotg210_hcd *fotg210)
if (fotg210->isoc_count > 0 || (fotg210->need_io_watchdog &&
fotg210->async_count + fotg210->intr_count > 0))
fotg210_enable_event(fotg210, FOTG210_HRTIMER_IO_WATCHDOG,
- true);
+ true);
}
-/*
- * Handler functions for the hrtimer event types.
+/* Handler functions for the hrtimer event types.
* Keep this array in the same order as the event types indexed by
* enum fotg210_hrtimer_event in fotg210.h.
*/
@@ -1391,10 +1364,10 @@ static enum hrtimer_restart fotg210_hrtimer_func(struct hrtimer *t)
{
struct fotg210_hcd *fotg210 =
container_of(t, struct fotg210_hcd, hrtimer);
- ktime_t now;
- unsigned long events;
- unsigned long flags;
- unsigned e;
+ ktime_t now;
+ unsigned long events;
+ unsigned long flags;
+ unsigned e;
spin_lock_irqsave(&fotg210->lock, flags);
@@ -1418,50 +1391,37 @@ static enum hrtimer_restart fotg210_hrtimer_func(struct hrtimer *t)
return HRTIMER_NORESTART;
}
-/*-------------------------------------------------------------------------*/
-
-#define fotg210_bus_suspend NULL
-#define fotg210_bus_resume NULL
+#define fotg210_bus_suspend NULL
+#define fotg210_bus_resume NULL
-/*-------------------------------------------------------------------------*/
-
-static int check_reset_complete(
- struct fotg210_hcd *fotg210,
- int index,
- u32 __iomem *status_reg,
- int port_status
-) {
+static int check_reset_complete(struct fotg210_hcd *fotg210, int index,
+ u32 __iomem *status_reg, int port_status)
+{
if (!(port_status & PORT_CONNECT))
return port_status;
/* if reset finished and it's still not enabled -- handoff */
- if (!(port_status & PORT_PE)) {
+ if (!(port_status & PORT_PE))
/* with integrated TT, there's nobody to hand it to! */
- fotg210_dbg(fotg210,
- "Failed to enable port %d on root hub TT\n",
- index+1);
- return port_status;
- } else {
+ fotg210_dbg(fotg210, "Failed to enable port %d on root hub TT\n",
+ index + 1);
+ else
fotg210_dbg(fotg210, "port %d reset complete, port enabled\n",
- index + 1);
- }
+ index + 1);
return port_status;
}
-/*-------------------------------------------------------------------------*/
-
/* build "status change" packet (one or two bytes) from HC registers */
-static int
-fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
+static int fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 temp, status;
- u32 mask;
- int retval = 1;
- unsigned long flags;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 temp, status;
+ u32 mask;
+ int retval = 1;
+ unsigned long flags;
/* init status to no-changes */
buf[0] = 0;
@@ -1488,9 +1448,9 @@ fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
* controller by the user.
*/
- if ((temp & mask) != 0 || test_bit(0, &fotg210->port_c_suspend)
- || (fotg210->reset_done[0] && time_after_eq(
- jiffies, fotg210->reset_done[0]))) {
+ if ((temp & mask) != 0 || test_bit(0, &fotg210->port_c_suspend) ||
+ (fotg210->reset_done[0] &&
+ time_after_eq(jiffies, fotg210->reset_done[0]))) {
buf[0] |= 1 << 1;
status = STS_PCD;
}
@@ -1499,15 +1459,11 @@ fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
return status ? retval : 0;
}
-/*-------------------------------------------------------------------------*/
-
-static void
-fotg210_hub_descriptor(
- struct fotg210_hcd *fotg210,
- struct usb_hub_descriptor *desc
-) {
- int ports = HCS_N_PORTS(fotg210->hcs_params);
- u16 temp;
+static void fotg210_hub_descriptor(struct fotg210_hcd *fotg210,
+ struct usb_hub_descriptor *desc)
+{
+ int ports = HCS_N_PORTS(fotg210->hcs_params);
+ u16 temp;
desc->bDescriptorType = USB_DT_HUB;
desc->bPwrOn2PwrGood = 10; /* fotg210 1.0, 2.3.9 says 20ms max */
@@ -1526,23 +1482,16 @@ fotg210_hub_descriptor(
desc->wHubCharacteristics = cpu_to_le16(temp);
}
-/*-------------------------------------------------------------------------*/
-
-static int fotg210_hub_control(
- struct usb_hcd *hcd,
- u16 typeReq,
- u16 wValue,
- u16 wIndex,
- char *buf,
- u16 wLength
-) {
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- int ports = HCS_N_PORTS(fotg210->hcs_params);
- u32 __iomem *status_reg = &fotg210->regs->port_status;
- u32 temp, temp1, status;
- unsigned long flags;
- int retval = 0;
- unsigned selector;
+static int fotg210_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ int ports = HCS_N_PORTS(fotg210->hcs_params);
+ u32 __iomem *status_reg = &fotg210->regs->port_status;
+ u32 temp, temp1, status;
+ unsigned long flags;
+ int retval = 0;
+ unsigned selector;
/*
* FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR.
@@ -1605,7 +1554,7 @@ static int fotg210_hub_control(
break;
case USB_PORT_FEAT_C_OVER_CURRENT:
fotg210_writel(fotg210, temp | OTGISR_OVC,
- &fotg210->regs->otgisr);
+ &fotg210->regs->otgisr);
break;
case USB_PORT_FEAT_C_RESET:
/* GetPortStatus clears reset */
@@ -1617,7 +1566,7 @@ static int fotg210_hub_control(
break;
case GetHubDescriptor:
fotg210_hub_descriptor(fotg210, (struct usb_hub_descriptor *)
- buf);
+ buf);
break;
case GetHubStatus:
/* no hub-wide feature/status flags */
@@ -1663,16 +1612,16 @@ static int fotg210_hub_control(
/* stop resume signaling */
temp = fotg210_readl(fotg210, status_reg);
- fotg210_writel(fotg210,
- temp & ~(PORT_RWC_BITS | PORT_RESUME),
- status_reg);
+ fotg210_writel(fotg210, temp &
+ ~(PORT_RWC_BITS | PORT_RESUME),
+ status_reg);
clear_bit(wIndex, &fotg210->resuming_ports);
retval = handshake(fotg210, status_reg,
- PORT_RESUME, 0, 2000 /* 2msec */);
+ PORT_RESUME, 0, 2000);/* 2ms */
if (retval != 0) {
fotg210_err(fotg210,
- "port %d resume error %d\n",
- wIndex + 1, retval);
+ "port %d resume error %d\n",
+ wIndex + 1, retval);
goto error;
}
temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
@@ -1680,17 +1629,16 @@ static int fotg210_hub_control(
}
/* whoever resets must GetPortStatus to complete it!! */
- if ((temp & PORT_RESET)
- && time_after_eq(jiffies,
- fotg210->reset_done[wIndex])) {
+ if ((temp & PORT_RESET) && time_after_eq(jiffies,
+ fotg210->reset_done[wIndex])) {
status |= USB_PORT_STAT_C_RESET << 16;
fotg210->reset_done[wIndex] = 0;
clear_bit(wIndex, &fotg210->resuming_ports);
/* force reset to complete */
fotg210_writel(fotg210,
- temp & ~(PORT_RWC_BITS | PORT_RESET),
- status_reg);
+ temp & ~(PORT_RWC_BITS | PORT_RESET),
+ status_reg);
/* REVISIT: some hardware needs 550+ usec to clear
* this bit; seems too long to spin routinely...
*/
@@ -1698,7 +1646,7 @@ static int fotg210_hub_control(
PORT_RESET, 0, 1000);
if (retval != 0) {
fotg210_err(fotg210, "port %d reset error %d\n",
- wIndex + 1, retval);
+ wIndex + 1, retval);
goto error;
}
@@ -1718,7 +1666,7 @@ static int fotg210_hub_control(
temp &= ~PORT_RWC_BITS;
fotg210_writel(fotg210, temp, status_reg);
fotg210_dbg(fotg210, "port %d --> companion\n",
- wIndex + 1);
+ wIndex + 1);
temp = fotg210_readl(fotg210, status_reg);
}
@@ -1788,7 +1736,7 @@ static int fotg210_hub_control(
* mode if we have hostpc feature
*/
fotg210_writel(fotg210, temp | PORT_SUSPEND,
- status_reg);
+ status_reg);
set_bit(wIndex, &fotg210->suspended_ports);
break;
case USB_PORT_FEAT_RESET:
@@ -1866,9 +1814,8 @@ static int __maybe_unused fotg210_port_handed_over(struct usb_hcd *hcd,
{
return 0;
}
-/*-------------------------------------------------------------------------*/
-/*
- * There's basically three types of memory:
+
+/* There's basically three types of memory:
* - data used only by the HCD ... kmalloc is fine
* - async and periodic schedules, shared by HC and HCD ... these
* need to use dma_pool or dma_alloc_coherent
@@ -1878,12 +1825,9 @@ static int __maybe_unused fotg210_port_handed_over(struct usb_hcd *hcd,
* No memory seen by this driver is pageable.
*/
-/*-------------------------------------------------------------------------*/
-
/* Allocate the key transfer structures from the previously allocated pool */
-
static inline void fotg210_qtd_init(struct fotg210_hcd *fotg210,
- struct fotg210_qtd *qtd, dma_addr_t dma)
+ struct fotg210_qtd *qtd, dma_addr_t dma)
{
memset(qtd, 0, sizeof(*qtd));
qtd->qtd_dma = dma;
@@ -1894,10 +1838,10 @@ static inline void fotg210_qtd_init(struct fotg210_hcd *fotg210,
}
static struct fotg210_qtd *fotg210_qtd_alloc(struct fotg210_hcd *fotg210,
- gfp_t flags)
+ gfp_t flags)
{
- struct fotg210_qtd *qtd;
- dma_addr_t dma;
+ struct fotg210_qtd *qtd;
+ dma_addr_t dma;
qtd = dma_pool_alloc(fotg210->qtd_pool, flags, &dma);
if (qtd != NULL)
@@ -1907,7 +1851,7 @@ static struct fotg210_qtd *fotg210_qtd_alloc(struct fotg210_hcd *fotg210,
}
static inline void fotg210_qtd_free(struct fotg210_hcd *fotg210,
- struct fotg210_qtd *qtd)
+ struct fotg210_qtd *qtd)
{
dma_pool_free(fotg210->qtd_pool, qtd, qtd->qtd_dma);
}
@@ -1927,10 +1871,10 @@ static void qh_destroy(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
}
static struct fotg210_qh *fotg210_qh_alloc(struct fotg210_hcd *fotg210,
- gfp_t flags)
+ gfp_t flags)
{
- struct fotg210_qh *qh;
- dma_addr_t dma;
+ struct fotg210_qh *qh;
+ dma_addr_t dma;
qh = kzalloc(sizeof(*qh), GFP_ATOMIC);
if (!qh)
@@ -1958,8 +1902,6 @@ fail:
return NULL;
}
-/*-------------------------------------------------------------------------*/
-
/* The queue heads and transfer descriptors are managed from pools tied
* to each of the "per device" structures.
* This is the initialisation and cleanup code.
@@ -1976,23 +1918,19 @@ static void fotg210_mem_cleanup(struct fotg210_hcd *fotg210)
fotg210->dummy = NULL;
/* DMA consistent memory and pools */
- if (fotg210->qtd_pool)
- dma_pool_destroy(fotg210->qtd_pool);
+ dma_pool_destroy(fotg210->qtd_pool);
fotg210->qtd_pool = NULL;
- if (fotg210->qh_pool) {
- dma_pool_destroy(fotg210->qh_pool);
- fotg210->qh_pool = NULL;
- }
+ dma_pool_destroy(fotg210->qh_pool);
+ fotg210->qh_pool = NULL;
- if (fotg210->itd_pool)
- dma_pool_destroy(fotg210->itd_pool);
+ dma_pool_destroy(fotg210->itd_pool);
fotg210->itd_pool = NULL;
if (fotg210->periodic)
dma_free_coherent(fotg210_to_hcd(fotg210)->self.controller,
- fotg210->periodic_size * sizeof(u32),
- fotg210->periodic, fotg210->periodic_dma);
+ fotg210->periodic_size * sizeof(u32),
+ fotg210->periodic, fotg210->periodic_dma);
fotg210->periodic = NULL;
/* shadow periodic table */
@@ -2039,8 +1977,8 @@ static int fotg210_mem_init(struct fotg210_hcd *fotg210, gfp_t flags)
/* Hardware periodic table */
fotg210->periodic = (__le32 *)
dma_alloc_coherent(fotg210_to_hcd(fotg210)->self.controller,
- fotg210->periodic_size * sizeof(__le32),
- &fotg210->periodic_dma, 0);
+ fotg210->periodic_size * sizeof(__le32),
+ &fotg210->periodic_dma, 0);
if (fotg210->periodic == NULL)
goto fail;
@@ -2049,7 +1987,7 @@ static int fotg210_mem_init(struct fotg210_hcd *fotg210, gfp_t flags)
/* software shadow of hardware table */
fotg210->pshadow = kcalloc(fotg210->periodic_size, sizeof(void *),
- flags);
+ flags);
if (fotg210->pshadow != NULL)
return 0;
@@ -2058,9 +1996,7 @@ fail:
fotg210_mem_cleanup(fotg210);
return -ENOMEM;
}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI hardware queue manipulation ... the core. QH/QTD manipulation.
+/* EHCI hardware queue manipulation ... the core. QH/QTD manipulation.
*
* Control, bulk, and interrupt traffic all use "qh" lists. They list "qtd"
* entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned
@@ -2077,16 +2013,12 @@ fail:
* buffer low/full speed data so the host collects it at high speed.
*/
-/*-------------------------------------------------------------------------*/
-
/* fill a qtd, returning how much of the buffer we were able to queue up */
-
-static int
-qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd, dma_addr_t buf,
- size_t len, int token, int maxpacket)
+static int qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd,
+ dma_addr_t buf, size_t len, int token, int maxpacket)
{
- int i, count;
- u64 addr = buf;
+ int i, count;
+ u64 addr = buf;
/* one buffer entry per 4K ... first might be short or unaligned */
qtd->hw_buf[0] = cpu_to_hc32(fotg210, (u32)addr);
@@ -2121,11 +2053,8 @@ qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd, dma_addr_t buf,
return count;
}
-/*-------------------------------------------------------------------------*/
-
-static inline void
-qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
- struct fotg210_qtd *qtd)
+static inline void qh_update(struct fotg210_hcd *fotg210,
+ struct fotg210_qh *qh, struct fotg210_qtd *qtd)
{
struct fotg210_qh_hw *hw = qh->hw;
@@ -2141,7 +2070,7 @@ qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
* ever clear it.
*/
if (!(hw->hw_info1 & cpu_to_hc32(fotg210, QH_TOGGLE_CTL))) {
- unsigned is_out, epnum;
+ unsigned is_out, epnum;
is_out = qh->is_out;
epnum = (hc32_to_cpup(fotg210, &hw->hw_info1) >> 8) & 0x0f;
@@ -2158,8 +2087,7 @@ qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
* overlay, so qh->hw_token wrongly becomes inactive/halted), only fault
* recovery (including urb dequeue) would need software changes to a QH...
*/
-static void
-qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
+static void qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
struct fotg210_qtd *qtd;
@@ -2185,16 +2113,14 @@ qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
qh_update(fotg210, qh, qtd);
}
-/*-------------------------------------------------------------------------*/
-
static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
static void fotg210_clear_tt_buffer_complete(struct usb_hcd *hcd,
struct usb_host_endpoint *ep)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct fotg210_qh *qh = ep->hcpriv;
- unsigned long flags;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_qh *qh = ep->hcpriv;
+ unsigned long flags;
spin_lock_irqsave(&fotg210->lock, flags);
qh->clearing_tt = 0;
@@ -2205,8 +2131,7 @@ static void fotg210_clear_tt_buffer_complete(struct usb_hcd *hcd,
}
static void fotg210_clear_tt_buffer(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh,
- struct urb *urb, u32 token)
+ struct fotg210_qh *qh, struct urb *urb, u32 token)
{
/* If an async split transaction gets an error or is unlinked,
@@ -2217,27 +2142,24 @@ static void fotg210_clear_tt_buffer(struct fotg210_hcd *fotg210,
*/
if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) {
struct usb_device *tt = urb->dev->tt->hub;
+
dev_dbg(&tt->dev,
- "clear tt buffer port %d, a%d ep%d t%08x\n",
- urb->dev->ttport, urb->dev->devnum,
- usb_pipeendpoint(urb->pipe), token);
+ "clear tt buffer port %d, a%d ep%d t%08x\n",
+ urb->dev->ttport, urb->dev->devnum,
+ usb_pipeendpoint(urb->pipe), token);
if (urb->dev->tt->hub !=
- fotg210_to_hcd(fotg210)->self.root_hub) {
+ fotg210_to_hcd(fotg210)->self.root_hub) {
if (usb_hub_clear_tt_buffer(urb) == 0)
qh->clearing_tt = 1;
}
}
}
-static int qtd_copy_status(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- size_t length,
- u32 token
-)
+static int qtd_copy_status(struct fotg210_hcd *fotg210, struct urb *urb,
+ size_t length, u32 token)
{
- int status = -EINPROGRESS;
+ int status = -EINPROGRESS;
/* count IN/OUT bytes, not SETUP (even short packets) */
if (likely(QTD_PID(token) != 2))
@@ -2274,32 +2196,32 @@ static int qtd_copy_status(
} else if (token & QTD_STS_XACT) {
/* timeout, bad CRC, wrong PID, etc */
fotg210_dbg(fotg210, "devpath %s ep%d%s 3strikes\n",
- urb->dev->devpath,
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out");
+ urb->dev->devpath,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out");
status = -EPROTO;
} else { /* unknown */
status = -EPROTO;
}
fotg210_dbg(fotg210,
- "dev%d ep%d%s qtd token %08x --> status %d\n",
- usb_pipedevice(urb->pipe),
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out",
- token, status);
+ "dev%d ep%d%s qtd token %08x --> status %d\n",
+ usb_pipedevice(urb->pipe),
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out",
+ token, status);
}
return status;
}
-static void
-fotg210_urb_done(struct fotg210_hcd *fotg210, struct urb *urb, int status)
+static void fotg210_urb_done(struct fotg210_hcd *fotg210, struct urb *urb,
+ int status)
__releases(fotg210->lock)
__acquires(fotg210->lock)
{
if (likely(urb->hcpriv != NULL)) {
- struct fotg210_qh *qh = (struct fotg210_qh *) urb->hcpriv;
+ struct fotg210_qh *qh = (struct fotg210_qh *) urb->hcpriv;
/* S-mask in a QH means it's an interrupt urb */
if ((qh->hw->hw_info2 & cpu_to_hc32(fotg210, QH_SMASK)) != 0) {
@@ -2320,12 +2242,12 @@ __acquires(fotg210->lock)
#ifdef FOTG210_URB_TRACE
fotg210_dbg(fotg210,
- "%s %s urb %p ep%d%s status %d len %d/%d\n",
- __func__, urb->dev->devpath, urb,
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out",
- status,
- urb->actual_length, urb->transfer_buffer_length);
+ "%s %s urb %p ep%d%s status %d len %d/%d\n",
+ __func__, urb->dev->devpath, urb,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out",
+ status,
+ urb->actual_length, urb->transfer_buffer_length);
#endif
/* complete() can reenter this HCD */
@@ -2337,21 +2259,20 @@ __acquires(fotg210->lock)
static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
-/*
- * Process and free completed qtds for a qh, returning URBs to drivers.
+/* Process and free completed qtds for a qh, returning URBs to drivers.
* Chases up to qh->hw_current. Returns number of completions called,
* indicating how much "real" work we did.
*/
-static unsigned
-qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
+static unsigned qh_completions(struct fotg210_hcd *fotg210,
+ struct fotg210_qh *qh)
{
- struct fotg210_qtd *last, *end = qh->dummy;
- struct list_head *entry, *tmp;
- int last_status;
- int stopped;
- unsigned count = 0;
- u8 state;
- struct fotg210_qh_hw *hw = qh->hw;
+ struct fotg210_qtd *last, *end = qh->dummy;
+ struct list_head *entry, *tmp;
+ int last_status;
+ int stopped;
+ unsigned count = 0;
+ u8 state;
+ struct fotg210_qh_hw *hw = qh->hw;
if (unlikely(list_empty(&qh->qtd_list)))
return count;
@@ -2370,7 +2291,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
qh->qh_state = QH_STATE_COMPLETING;
stopped = (state == QH_STATE_IDLE);
- rescan:
+rescan:
last = NULL;
last_status = -EINPROGRESS;
qh->needs_rescan = 0;
@@ -2381,9 +2302,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
* if queue is stopped, handles unlinks.
*/
list_for_each_safe(entry, tmp, &qh->qtd_list) {
- struct fotg210_qtd *qtd;
- struct urb *urb;
- u32 token = 0;
+ struct fotg210_qtd *qtd;
+ struct urb *urb;
+ u32 token = 0;
qtd = list_entry(entry, struct fotg210_qtd, qtd_list);
urb = qtd->urb;
@@ -2392,7 +2313,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
if (last) {
if (likely(last->urb != urb)) {
fotg210_urb_done(fotg210, last->urb,
- last_status);
+ last_status);
count++;
last_status = -EINPROGRESS;
}
@@ -2409,20 +2330,17 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
token = hc32_to_cpu(fotg210, qtd->hw_token);
/* always clean up qtds the hc de-activated */
- retry_xacterr:
+retry_xacterr:
if ((token & QTD_STS_ACTIVE) == 0) {
/* Report Data Buffer Error: non-fatal but useful */
if (token & QTD_STS_DBE)
fotg210_dbg(fotg210,
"detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n",
- urb,
- usb_endpoint_num(&urb->ep->desc),
+ urb, usb_endpoint_num(&urb->ep->desc),
usb_endpoint_dir_in(&urb->ep->desc)
? "in" : "out",
- urb->transfer_buffer_length,
- qtd,
- qh);
+ urb->transfer_buffer_length, qtd, qh);
/* on STALL, error, and short reads this urb must
* complete and all its qtds must be recycled.
@@ -2433,12 +2351,14 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
* reach the software xacterr limit
*/
if ((token & QTD_STS_XACT) &&
- QTD_CERR(token) == 0 &&
- ++qh->xacterrs < QH_XACTERR_MAX &&
- !urb->unlinked) {
+ QTD_CERR(token) == 0 &&
+ ++qh->xacterrs < QH_XACTERR_MAX &&
+ !urb->unlinked) {
fotg210_dbg(fotg210,
- "detected XactErr len %zu/%zu retry %d\n",
- qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs);
+ "detected XactErr len %zu/%zu retry %d\n",
+ qtd->length - QTD_LENGTH(token),
+ qtd->length,
+ qh->xacterrs);
/* reset the token in the qtd and the
* qh overlay (which still contains
@@ -2466,9 +2386,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
* URB_SHORT_NOT_OK was set so the driver submitting
* the urbs could clean it up.
*/
- } else if (IS_SHORT_READ(token)
- && !(qtd->hw_alt_next
- & FOTG210_LIST_END(fotg210))) {
+ } else if (IS_SHORT_READ(token) &&
+ !(qtd->hw_alt_next &
+ FOTG210_LIST_END(fotg210))) {
stopped = 1;
}
@@ -2492,9 +2412,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
continue;
/* qh unlinked; token in overlay may be most current */
- if (state == QH_STATE_IDLE
- && cpu_to_hc32(fotg210, qtd->qtd_dma)
- == hw->hw_current) {
+ if (state == QH_STATE_IDLE &&
+ cpu_to_hc32(fotg210, qtd->qtd_dma)
+ == hw->hw_current) {
token = hc32_to_cpu(fotg210, hw->hw_token);
/* An unlink may leave an incomplete
@@ -2502,7 +2422,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
* We have to clear it.
*/
fotg210_clear_tt_buffer(fotg210, qh, urb,
- token);
+ token);
}
}
@@ -2516,9 +2436,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
if (last_status == -EINPROGRESS) {
last_status = qtd_copy_status(fotg210, urb,
qtd->length, token);
- if (last_status == -EREMOTEIO
- && (qtd->hw_alt_next
- & FOTG210_LIST_END(fotg210)))
+ if (last_status == -EREMOTEIO &&
+ (qtd->hw_alt_next &
+ FOTG210_LIST_END(fotg210)))
last_status = -EINPROGRESS;
/* As part of low/full-speed endpoint-halt processing
@@ -2537,7 +2457,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
*/
if (last_status != -EPIPE)
fotg210_clear_tt_buffer(fotg210, qh,
- urb, token);
+ urb, token);
}
}
@@ -2615,26 +2535,21 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
return count;
}
-/*-------------------------------------------------------------------------*/
-
/* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */
#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
/* ... and packet size, for any kind of endpoint descriptor */
#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
-/*
- * reverse of qh_urb_transaction: free a list of TDs.
+/* reverse of qh_urb_transaction: free a list of TDs.
* used for cleanup after errors, before HC sees an URB's TDs.
*/
-static void qtd_list_free(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list
-) {
- struct list_head *entry, *temp;
+static void qtd_list_free(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct list_head *qtd_list)
+{
+ struct list_head *entry, *temp;
list_for_each_safe(entry, temp, qtd_list) {
- struct fotg210_qtd *qtd;
+ struct fotg210_qtd *qtd;
qtd = list_entry(entry, struct fotg210_qtd, qtd_list);
list_del(&qtd->qtd_list);
@@ -2642,23 +2557,18 @@ static void qtd_list_free(
}
}
-/*
- * create a list of filled qtds for this URB; won't link into qh.
+/* create a list of filled qtds for this URB; won't link into qh.
*/
-static struct list_head *
-qh_urb_transaction(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *head,
- gfp_t flags
-) {
- struct fotg210_qtd *qtd, *qtd_prev;
- dma_addr_t buf;
- int len, this_sg_len, maxpacket;
- int is_input;
- u32 token;
- int i;
- struct scatterlist *sg;
+static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210,
+ struct urb *urb, struct list_head *head, gfp_t flags)
+{
+ struct fotg210_qtd *qtd, *qtd_prev;
+ dma_addr_t buf;
+ int len, this_sg_len, maxpacket;
+ int is_input;
+ u32 token;
+ int i;
+ struct scatterlist *sg;
/*
* URBs map to sequences of QTDs: one logical transaction
@@ -2768,8 +2678,8 @@ qh_urb_transaction(
* have the alt_next mechanism keep the queue running after the
* last data qtd (the only one, for control and most other cases).
*/
- if (likely((urb->transfer_flags & URB_SHORT_NOT_OK) == 0
- || usb_pipecontrol(urb->pipe)))
+ if (likely((urb->transfer_flags & URB_SHORT_NOT_OK) == 0 ||
+ usb_pipecontrol(urb->pipe)))
qtd->hw_alt_next = FOTG210_LIST_END(fotg210);
/*
@@ -2778,7 +2688,7 @@ qh_urb_transaction(
* (zero length).
*/
if (likely(urb->transfer_buffer_length != 0)) {
- int one_more = 0;
+ int one_more = 0;
if (usb_pipecontrol(urb->pipe)) {
one_more = 1;
@@ -2813,9 +2723,7 @@ cleanup:
return NULL;
}
-/*-------------------------------------------------------------------------*/
-/*
- * Would be best to create all qh's from config descriptors,
+/* Would be best to create all qh's from config descriptors,
* when each interface/altsetting is established. Unlink
* any previous qh and cancel its urbs first; endpoints are
* implicitly reset then (data toggle too).
@@ -2823,26 +2731,22 @@ cleanup:
*/
-/*
- * Each QH holds a qtd list; a QH is used for everything except iso.
+/* Each QH holds a qtd list; a QH is used for everything except iso.
*
* For interrupt urbs, the scheduler must set the microframe scheduling
* mask(s) each time the QH gets scheduled. For highspeed, that's
* just one microframe in the s-mask. For split interrupt transactions
* there are additional complications: c-mask, maybe FSTNs.
*/
-static struct fotg210_qh *
-qh_make(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- gfp_t flags
-) {
- struct fotg210_qh *qh = fotg210_qh_alloc(fotg210, flags);
- u32 info1 = 0, info2 = 0;
- int is_input, type;
- int maxp = 0;
- struct usb_tt *tt = urb->dev->tt;
- struct fotg210_qh_hw *hw;
+static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb,
+ gfp_t flags)
+{
+ struct fotg210_qh *qh = fotg210_qh_alloc(fotg210, flags);
+ u32 info1 = 0, info2 = 0;
+ int is_input, type;
+ int maxp = 0;
+ struct usb_tt *tt = urb->dev->tt;
+ struct fotg210_qh_hw *hw;
if (!qh)
return qh;
@@ -2862,7 +2766,7 @@ qh_make(
*/
if (max_packet(maxp) > 1024) {
fotg210_dbg(fotg210, "bogus qh maxpacket %d\n",
- max_packet(maxp));
+ max_packet(maxp));
goto done;
}
@@ -2896,7 +2800,7 @@ qh_make(
urb->interval = qh->period << 3;
}
} else {
- int think_time;
+ int think_time;
/* gap is f(FS/LS transfer times) */
qh->gap_uf = 1 + usb_calc_bus_time(urb->dev->speed,
@@ -2986,7 +2890,7 @@ qh_make(
break;
default:
fotg210_dbg(fotg210, "bogus dev %p speed %d\n", urb->dev,
- urb->dev->speed);
+ urb->dev->speed);
done:
qh_destroy(fotg210, qh);
return NULL;
@@ -3005,8 +2909,6 @@ done:
return qh;
}
-/*-------------------------------------------------------------------------*/
-
static void enable_async(struct fotg210_hcd *fotg210)
{
if (fotg210->async_count++)
@@ -3036,8 +2938,8 @@ static void disable_async(struct fotg210_hcd *fotg210)
static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- __hc32 dma = QH_NEXT(fotg210, qh->qh_dma);
- struct fotg210_qh *head;
+ __hc32 dma = QH_NEXT(fotg210, qh->qh_dma);
+ struct fotg210_qh *head;
/* Don't link a QH if there's a Clear-TT-Buffer pending */
if (unlikely(qh->clearing_tt))
@@ -3064,24 +2966,17 @@ static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
enable_async(fotg210);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * For control/bulk/interrupt, return QH with these TDs appended.
+/* For control/bulk/interrupt, return QH with these TDs appended.
* Allocates and initializes the QH if necessary.
* Returns null if it can't allocate a QH it needs to.
* If the QH has TDs (urbs) already, that's great.
*/
-static struct fotg210_qh *qh_append_tds(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list,
- int epnum,
- void **ptr
-)
+static struct fotg210_qh *qh_append_tds(struct fotg210_hcd *fotg210,
+ struct urb *urb, struct list_head *qtd_list,
+ int epnum, void **ptr)
{
- struct fotg210_qh *qh = NULL;
- __hc32 qh_addr_mask = cpu_to_hc32(fotg210, 0x7f);
+ struct fotg210_qh *qh = NULL;
+ __hc32 qh_addr_mask = cpu_to_hc32(fotg210, 0x7f);
qh = (struct fotg210_qh *) *ptr;
if (unlikely(qh == NULL)) {
@@ -3090,7 +2985,7 @@ static struct fotg210_qh *qh_append_tds(
*ptr = qh;
}
if (likely(qh != NULL)) {
- struct fotg210_qtd *qtd;
+ struct fotg210_qtd *qtd;
if (unlikely(list_empty(qtd_list)))
qtd = NULL;
@@ -3109,9 +3004,9 @@ static struct fotg210_qh *qh_append_tds(
* only hc or qh_refresh() ever modify the overlay.
*/
if (likely(qtd != NULL)) {
- struct fotg210_qtd *dummy;
- dma_addr_t dma;
- __hc32 token;
+ struct fotg210_qtd *dummy;
+ dma_addr_t dma;
+ __hc32 token;
/* to avoid racing the HC, use the dummy td instead of
* the first td of our list (becomes new dummy). both
@@ -3150,32 +3045,28 @@ static struct fotg210_qh *qh_append_tds(
return qh;
}
-/*-------------------------------------------------------------------------*/
-
-static int
-submit_async(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list,
- gfp_t mem_flags
-) {
- int epnum;
- unsigned long flags;
- struct fotg210_qh *qh = NULL;
- int rc;
+static int submit_async(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct list_head *qtd_list, gfp_t mem_flags)
+{
+ int epnum;
+ unsigned long flags;
+ struct fotg210_qh *qh = NULL;
+ int rc;
epnum = urb->ep->desc.bEndpointAddress;
#ifdef FOTG210_URB_TRACE
{
struct fotg210_qtd *qtd;
+
qtd = list_entry(qtd_list->next, struct fotg210_qtd, qtd_list);
fotg210_dbg(fotg210,
- "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
- __func__, urb->dev->devpath, urb,
- epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
- urb->transfer_buffer_length,
- qtd, urb->ep->hcpriv);
+ "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
+ __func__, urb->dev->devpath, urb,
+ epnum & 0x0f, (epnum & USB_DIR_IN)
+ ? "in" : "out",
+ urb->transfer_buffer_length,
+ qtd, urb->ep->hcpriv);
}
#endif
@@ -3200,19 +3091,17 @@ submit_async(
*/
if (likely(qh->qh_state == QH_STATE_IDLE))
qh_link_async(fotg210, qh);
- done:
+done:
spin_unlock_irqrestore(&fotg210->lock, flags);
if (unlikely(qh == NULL))
qtd_list_free(fotg210, urb, qtd_list);
return rc;
}
-/*-------------------------------------------------------------------------*/
-
static void single_unlink_async(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
- struct fotg210_qh *prev;
+ struct fotg210_qh *prev;
/* Add to the end of the list of QHs waiting for the next IAAD */
qh->qh_state = QH_STATE_UNLINK;
@@ -3260,7 +3149,7 @@ static void start_iaa_cycle(struct fotg210_hcd *fotg210, bool nested)
&fotg210->regs->command);
fotg210_readl(fotg210, &fotg210->regs->command);
fotg210_enable_event(fotg210, FOTG210_HRTIMER_IAA_WATCHDOG,
- true);
+ true);
}
}
@@ -3268,10 +3157,10 @@ static void start_iaa_cycle(struct fotg210_hcd *fotg210, bool nested)
static void end_unlink_async(struct fotg210_hcd *fotg210)
{
- struct fotg210_qh *qh;
+ struct fotg210_qh *qh;
/* Process the idle QHs */
- restart:
+restart:
fotg210->async_unlinking = true;
while (fotg210->async_iaa) {
qh = fotg210->async_iaa;
@@ -3326,7 +3215,7 @@ static void unlink_empty_async(struct fotg210_hcd *fotg210)
/* QHs that haven't been empty for long enough will be handled later */
if (check_unlinks_later) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_ASYNC_UNLINKS,
- true);
+ true);
++fotg210->async_unlink_cycle;
}
}
@@ -3335,7 +3224,7 @@ static void unlink_empty_async(struct fotg210_hcd *fotg210)
/* caller must own fotg210->lock */
static void start_unlink_async(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
/*
* If the QH isn't linked then there's nothing we can do
@@ -3352,18 +3241,16 @@ static void start_unlink_async(struct fotg210_hcd *fotg210,
start_iaa_cycle(fotg210, false);
}
-/*-------------------------------------------------------------------------*/
-
static void scan_async(struct fotg210_hcd *fotg210)
{
- struct fotg210_qh *qh;
- bool check_unlinks_later = false;
+ struct fotg210_qh *qh;
+ bool check_unlinks_later = false;
fotg210->qh_scan_next = fotg210->async->qh_next.qh;
while (fotg210->qh_scan_next) {
qh = fotg210->qh_scan_next;
fotg210->qh_scan_next = qh->qh_next.qh;
- rescan:
+rescan:
/* clean any finished work for this qh */
if (!list_empty(&qh->qtd_list)) {
int temp;
@@ -3395,15 +3282,13 @@ static void scan_async(struct fotg210_hcd *fotg210)
*/
if (check_unlinks_later && fotg210->rh_state == FOTG210_RH_RUNNING &&
!(fotg210->enabled_hrtimer_events &
- BIT(FOTG210_HRTIMER_ASYNC_UNLINKS))) {
+ BIT(FOTG210_HRTIMER_ASYNC_UNLINKS))) {
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_ASYNC_UNLINKS, true);
+ FOTG210_HRTIMER_ASYNC_UNLINKS, true);
++fotg210->async_unlink_cycle;
}
}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI scheduled transaction support: interrupt, iso, split iso
+/* EHCI scheduled transaction support: interrupt, iso, split iso
* These are called "periodic" transactions in the EHCI spec.
*
* Note that for interrupt transfers, the QH/QTD manipulation is shared
@@ -3414,19 +3299,14 @@ static void scan_async(struct fotg210_hcd *fotg210)
* It keeps track of every ITD (or SITD) that's linked, and holds enough
* pre-calculated schedule data to make appending to the queue be quick.
*/
-
static int fotg210_get_frame(struct usb_hcd *hcd);
-/*-------------------------------------------------------------------------*/
-
-/*
- * periodic_next_shadow - return "next" pointer on shadow list
+/* periodic_next_shadow - return "next" pointer on shadow list
* @periodic: host pointer to qh/itd
* @tag: hardware tag for type of this record
*/
-static union fotg210_shadow *
-periodic_next_shadow(struct fotg210_hcd *fotg210,
- union fotg210_shadow *periodic, __hc32 tag)
+static union fotg210_shadow *periodic_next_shadow(struct fotg210_hcd *fotg210,
+ union fotg210_shadow *periodic, __hc32 tag)
{
switch (hc32_to_cpu(fotg210, tag)) {
case Q_TYPE_QH:
@@ -3438,9 +3318,8 @@ periodic_next_shadow(struct fotg210_hcd *fotg210,
}
}
-static __hc32 *
-shadow_next_periodic(struct fotg210_hcd *fotg210,
- union fotg210_shadow *periodic, __hc32 tag)
+static __hc32 *shadow_next_periodic(struct fotg210_hcd *fotg210,
+ union fotg210_shadow *periodic, __hc32 tag)
{
switch (hc32_to_cpu(fotg210, tag)) {
/* our fotg210_shadow.qh is actually software part */
@@ -3454,11 +3333,11 @@ shadow_next_periodic(struct fotg210_hcd *fotg210,
/* caller must hold fotg210->lock */
static void periodic_unlink(struct fotg210_hcd *fotg210, unsigned frame,
- void *ptr)
+ void *ptr)
{
- union fotg210_shadow *prev_p = &fotg210->pshadow[frame];
- __hc32 *hw_p = &fotg210->periodic[frame];
- union fotg210_shadow here = *prev_p;
+ union fotg210_shadow *prev_p = &fotg210->pshadow[frame];
+ __hc32 *hw_p = &fotg210->periodic[frame];
+ union fotg210_shadow here = *prev_p;
/* find predecessor of "ptr"; hw and shadow lists are in sync */
while (here.ptr && here.ptr != ptr) {
@@ -3479,17 +3358,17 @@ static void periodic_unlink(struct fotg210_hcd *fotg210, unsigned frame,
Q_NEXT_TYPE(fotg210, *hw_p));
*hw_p = *shadow_next_periodic(fotg210, &here,
- Q_NEXT_TYPE(fotg210, *hw_p));
+ Q_NEXT_TYPE(fotg210, *hw_p));
}
/* how many of the uframe's 125 usecs are allocated? */
-static unsigned short
-periodic_usecs(struct fotg210_hcd *fotg210, unsigned frame, unsigned uframe)
+static unsigned short periodic_usecs(struct fotg210_hcd *fotg210,
+ unsigned frame, unsigned uframe)
{
- __hc32 *hw_p = &fotg210->periodic[frame];
- union fotg210_shadow *q = &fotg210->pshadow[frame];
- unsigned usecs = 0;
- struct fotg210_qh_hw *hw;
+ __hc32 *hw_p = &fotg210->periodic[frame];
+ union fotg210_shadow *q = &fotg210->pshadow[frame];
+ unsigned usecs = 0;
+ struct fotg210_qh_hw *hw;
while (q->ptr) {
switch (hc32_to_cpu(fotg210, Q_NEXT_TYPE(fotg210, *hw_p))) {
@@ -3526,12 +3405,10 @@ periodic_usecs(struct fotg210_hcd *fotg210, unsigned frame, unsigned uframe)
}
if (usecs > fotg210->uframe_periodic_max)
fotg210_err(fotg210, "uframe %d sched overrun: %d usecs\n",
- frame * 8 + uframe, usecs);
+ frame * 8 + uframe, usecs);
return usecs;
}
-/*-------------------------------------------------------------------------*/
-
static int same_tt(struct usb_device *dev1, struct usb_device *dev2)
{
if (!dev1->tt || !dev2->tt)
@@ -3548,13 +3425,8 @@ static int same_tt(struct usb_device *dev1, struct usb_device *dev2)
* for a periodic transfer starting at the specified frame, using
* all the uframes in the mask.
*/
-static int tt_no_collision(
- struct fotg210_hcd *fotg210,
- unsigned period,
- struct usb_device *dev,
- unsigned frame,
- u32 uf_mask
-)
+static int tt_no_collision(struct fotg210_hcd *fotg210, unsigned period,
+ struct usb_device *dev, unsigned frame, u32 uf_mask)
{
if (period == 0) /* error */
return 0;
@@ -3564,9 +3436,9 @@ static int tt_no_collision(
* calling convention doesn't make that distinction.
*/
for (; frame < fotg210->periodic_size; frame += period) {
- union fotg210_shadow here;
- __hc32 type;
- struct fotg210_qh_hw *hw;
+ union fotg210_shadow here;
+ __hc32 type;
+ struct fotg210_qh_hw *hw;
here = fotg210->pshadow[frame];
type = Q_NEXT_TYPE(fotg210, fotg210->periodic[frame]);
@@ -3579,7 +3451,7 @@ static int tt_no_collision(
case Q_TYPE_QH:
hw = here.qh->hw;
if (same_tt(dev, here.qh->dev)) {
- u32 mask;
+ u32 mask;
mask = hc32_to_cpu(fotg210,
hw->hw_info2);
@@ -3594,8 +3466,8 @@ static int tt_no_collision(
/* case Q_TYPE_FSTN: */
default:
fotg210_dbg(fotg210,
- "periodic frame %d bogus type %d\n",
- frame, type);
+ "periodic frame %d bogus type %d\n",
+ frame, type);
}
/* collision or error */
@@ -3607,8 +3479,6 @@ static int tt_no_collision(
return 1;
}
-/*-------------------------------------------------------------------------*/
-
static void enable_periodic(struct fotg210_hcd *fotg210)
{
if (fotg210->periodic_count++)
@@ -3632,8 +3502,6 @@ static void disable_periodic(struct fotg210_hcd *fotg210)
fotg210_poll_PSS(fotg210);
}
-/*-------------------------------------------------------------------------*/
-
/* periodic schedule slots have iso tds (normal or split) first, then a
* sparse tree for active interrupt transfers.
*
@@ -3642,24 +3510,24 @@ static void disable_periodic(struct fotg210_hcd *fotg210)
*/
static void qh_link_periodic(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- unsigned i;
- unsigned period = qh->period;
+ unsigned i;
+ unsigned period = qh->period;
dev_dbg(&qh->dev->dev,
- "link qh%d-%04x/%p start %d [%d/%d us]\n",
- period, hc32_to_cpup(fotg210, &qh->hw->hw_info2)
- & (QH_CMASK | QH_SMASK),
- qh, qh->start, qh->usecs, qh->c_usecs);
+ "link qh%d-%04x/%p start %d [%d/%d us]\n", period,
+ hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
+ (QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs,
+ qh->c_usecs);
/* high bandwidth, or otherwise every microframe */
if (period == 0)
period = 1;
for (i = qh->start; i < fotg210->periodic_size; i += period) {
- union fotg210_shadow *prev = &fotg210->pshadow[i];
- __hc32 *hw_p = &fotg210->periodic[i];
- union fotg210_shadow here = *prev;
- __hc32 type = 0;
+ union fotg210_shadow *prev = &fotg210->pshadow[i];
+ __hc32 *hw_p = &fotg210->periodic[i];
+ union fotg210_shadow here = *prev;
+ __hc32 type = 0;
/* skip the iso nodes at list head */
while (here.ptr) {
@@ -3707,10 +3575,10 @@ static void qh_link_periodic(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
}
static void qh_unlink_periodic(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
- unsigned i;
- unsigned period;
+ unsigned i;
+ unsigned period;
/*
* If qh is for a low/full-speed device, simply unlinking it
@@ -3741,10 +3609,10 @@ static void qh_unlink_periodic(struct fotg210_hcd *fotg210,
: (qh->usecs * 8);
dev_dbg(&qh->dev->dev,
- "unlink qh%d-%04x/%p start %d [%d/%d us]\n",
- qh->period,
- hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
- (QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs, qh->c_usecs);
+ "unlink qh%d-%04x/%p start %d [%d/%d us]\n",
+ qh->period, hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
+ (QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs,
+ qh->c_usecs);
/* qh->qh_next still "live" to HC */
qh->qh_state = QH_STATE_UNLINK;
@@ -3757,7 +3625,7 @@ static void qh_unlink_periodic(struct fotg210_hcd *fotg210,
}
static void start_unlink_intr(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
/* If the QH isn't linked then there's nothing we can do
* unless we were called during a giveback, in which case
@@ -3794,15 +3662,15 @@ static void start_unlink_intr(struct fotg210_hcd *fotg210,
fotg210_handle_intr_unlinks(fotg210);
else if (fotg210->intr_unlink == qh) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR,
- true);
+ true);
++fotg210->intr_unlink_cycle;
}
}
static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- struct fotg210_qh_hw *hw = qh->hw;
- int rc;
+ struct fotg210_qh_hw *hw = qh->hw;
+ int rc;
qh->qh_state = QH_STATE_IDLE;
hw->hw_next = FOTG210_LIST_END(fotg210);
@@ -3811,7 +3679,7 @@ static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
/* reschedule QH iff another request is queued */
if (!list_empty(&qh->qtd_list) &&
- fotg210->rh_state == FOTG210_RH_RUNNING) {
+ fotg210->rh_state == FOTG210_RH_RUNNING) {
rc = qh_schedule(fotg210, qh);
/* An error here likely indicates handshake failure
@@ -3830,16 +3698,10 @@ static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
disable_periodic(fotg210);
}
-/*-------------------------------------------------------------------------*/
-
-static int check_period(
- struct fotg210_hcd *fotg210,
- unsigned frame,
- unsigned uframe,
- unsigned period,
- unsigned usecs
-) {
- int claimed;
+static int check_period(struct fotg210_hcd *fotg210, unsigned frame,
+ unsigned uframe, unsigned period, unsigned usecs)
+{
+ int claimed;
/* complete split running into next frame?
* given FSTN support, we could sometimes check...
@@ -3857,7 +3719,7 @@ static int check_period(
do {
for (uframe = 0; uframe < 7; uframe++) {
claimed = periodic_usecs(fotg210, frame,
- uframe);
+ uframe);
if (claimed > usecs)
return 0;
}
@@ -3876,16 +3738,11 @@ static int check_period(
return 1;
}
-static int check_intr_schedule(
- struct fotg210_hcd *fotg210,
- unsigned frame,
- unsigned uframe,
- const struct fotg210_qh *qh,
- __hc32 *c_maskp
-)
+static int check_intr_schedule(struct fotg210_hcd *fotg210, unsigned frame,
+ unsigned uframe, const struct fotg210_qh *qh, __hc32 *c_maskp)
{
- int retval = -ENOSPC;
- u8 mask = 0;
+ int retval = -ENOSPC;
+ u8 mask = 0;
if (qh->c_usecs && uframe >= 6) /* FSTN territory? */
goto done;
@@ -3911,10 +3768,10 @@ static int check_intr_schedule(
mask |= 1 << uframe;
if (tt_no_collision(fotg210, qh->period, qh->dev, frame, mask)) {
if (!check_period(fotg210, frame, uframe + qh->gap_uf + 1,
- qh->period, qh->c_usecs))
+ qh->period, qh->c_usecs))
goto done;
if (!check_period(fotg210, frame, uframe + qh->gap_uf,
- qh->period, qh->c_usecs))
+ qh->period, qh->c_usecs))
goto done;
retval = 0;
}
@@ -3927,11 +3784,11 @@ done:
*/
static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- int status;
- unsigned uframe;
- __hc32 c_mask;
- unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */
- struct fotg210_qh_hw *hw = qh->hw;
+ int status;
+ unsigned uframe;
+ __hc32 c_mask;
+ unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */
+ struct fotg210_qh_hw *hw = qh->hw;
qh_refresh(fotg210, qh);
hw->hw_next = FOTG210_LIST_END(fotg210);
@@ -3954,7 +3811,7 @@ static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
if (status) {
/* "normal" case, uframing flexible except with splits */
if (qh->period) {
- int i;
+ int i;
for (i = qh->period; status && i > 0; --i) {
frame = ++fotg210->random_frame % qh->period;
@@ -3971,7 +3828,7 @@ static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
} else {
frame = 0;
status = check_intr_schedule(fotg210, 0, 0, qh,
- &c_mask);
+ &c_mask);
}
if (status)
goto done;
@@ -3992,17 +3849,14 @@ done:
return status;
}
-static int intr_submit(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list,
- gfp_t mem_flags
-) {
- unsigned epnum;
- unsigned long flags;
- struct fotg210_qh *qh;
- int status;
- struct list_head empty;
+static int intr_submit(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct list_head *qtd_list, gfp_t mem_flags)
+{
+ unsigned epnum;
+ unsigned long flags;
+ struct fotg210_qh *qh;
+ int status;
+ struct list_head empty;
/* get endpoint and transfer/schedule data */
epnum = urb->ep->desc.bEndpointAddress;
@@ -4050,11 +3904,11 @@ done_not_linked:
static void scan_intr(struct fotg210_hcd *fotg210)
{
- struct fotg210_qh *qh;
+ struct fotg210_qh *qh;
list_for_each_entry_safe(qh, fotg210->qh_scan_next,
- &fotg210->intr_qh_list, intr_node) {
- rescan:
+ &fotg210->intr_qh_list, intr_node) {
+rescan:
/* clean any finished work for this qh */
if (!list_empty(&qh->qtd_list)) {
int temp;
@@ -4069,7 +3923,7 @@ static void scan_intr(struct fotg210_hcd *fotg210)
temp = qh_completions(fotg210, qh);
if (unlikely(qh->needs_rescan ||
(list_empty(&qh->qtd_list) &&
- qh->qh_state == QH_STATE_LINKED)))
+ qh->qh_state == QH_STATE_LINKED)))
start_unlink_intr(fotg210, qh);
else if (temp != 0)
goto rescan;
@@ -4077,12 +3931,9 @@ static void scan_intr(struct fotg210_hcd *fotg210)
}
}
-/*-------------------------------------------------------------------------*/
-
/* fotg210_iso_stream ops work with both ITD and SITD */
-static struct fotg210_iso_stream *
-iso_stream_alloc(gfp_t mem_flags)
+static struct fotg210_iso_stream *iso_stream_alloc(gfp_t mem_flags)
{
struct fotg210_iso_stream *stream;
@@ -4095,20 +3946,15 @@ iso_stream_alloc(gfp_t mem_flags)
return stream;
}
-static void
-iso_stream_init(
- struct fotg210_hcd *fotg210,
- struct fotg210_iso_stream *stream,
- struct usb_device *dev,
- int pipe,
- unsigned interval
-)
+static void iso_stream_init(struct fotg210_hcd *fotg210,
+ struct fotg210_iso_stream *stream, struct usb_device *dev,
+ int pipe, unsigned interval)
{
- u32 buf1;
- unsigned epnum, maxp;
- int is_input;
- long bandwidth;
- unsigned multi;
+ u32 buf1;
+ unsigned epnum, maxp;
+ int is_input;
+ long bandwidth;
+ unsigned multi;
/*
* this might be a "high bandwidth" highspeed endpoint,
@@ -4153,13 +3999,13 @@ iso_stream_init(
stream->maxp = maxp;
}
-static struct fotg210_iso_stream *
-iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb)
+static struct fotg210_iso_stream *iso_stream_find(struct fotg210_hcd *fotg210,
+ struct urb *urb)
{
- unsigned epnum;
- struct fotg210_iso_stream *stream;
+ unsigned epnum;
+ struct fotg210_iso_stream *stream;
struct usb_host_endpoint *ep;
- unsigned long flags;
+ unsigned long flags;
epnum = usb_pipeendpoint(urb->pipe);
if (usb_pipein(urb->pipe))
@@ -4182,8 +4028,8 @@ iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb)
/* if dev->ep[epnum] is a QH, hw is set */
} else if (unlikely(stream->hw != NULL)) {
fotg210_dbg(fotg210, "dev %s ep%d%s, not iso??\n",
- urb->dev->devpath, epnum,
- usb_pipein(urb->pipe) ? "in" : "out");
+ urb->dev->devpath, epnum,
+ usb_pipein(urb->pipe) ? "in" : "out");
stream = NULL;
}
@@ -4191,15 +4037,13 @@ iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb)
return stream;
}
-/*-------------------------------------------------------------------------*/
-
/* fotg210_iso_sched ops can be ITD-only or SITD-only */
-static struct fotg210_iso_sched *
-iso_sched_alloc(unsigned packets, gfp_t mem_flags)
+static struct fotg210_iso_sched *iso_sched_alloc(unsigned packets,
+ gfp_t mem_flags)
{
- struct fotg210_iso_sched *iso_sched;
- int size = sizeof(*iso_sched);
+ struct fotg210_iso_sched *iso_sched;
+ int size = sizeof(*iso_sched);
size += packets * sizeof(struct fotg210_iso_packet);
iso_sched = kzalloc(size, mem_flags);
@@ -4209,16 +4053,12 @@ iso_sched_alloc(unsigned packets, gfp_t mem_flags)
return iso_sched;
}
-static inline void
-itd_sched_init(
- struct fotg210_hcd *fotg210,
- struct fotg210_iso_sched *iso_sched,
- struct fotg210_iso_stream *stream,
- struct urb *urb
-)
+static inline void itd_sched_init(struct fotg210_hcd *fotg210,
+ struct fotg210_iso_sched *iso_sched,
+ struct fotg210_iso_stream *stream, struct urb *urb)
{
- unsigned i;
- dma_addr_t dma = urb->transfer_dma;
+ unsigned i;
+ dma_addr_t dma = urb->transfer_dma;
/* how many uframes are needed for these transfers */
iso_sched->span = urb->number_of_packets * stream->interval;
@@ -4227,10 +4067,10 @@ itd_sched_init(
* when we fit new itds into the schedule.
*/
for (i = 0; i < urb->number_of_packets; i++) {
- struct fotg210_iso_packet *uframe = &iso_sched->packet[i];
- unsigned length;
- dma_addr_t buf;
- u32 trans;
+ struct fotg210_iso_packet *uframe = &iso_sched->packet[i];
+ unsigned length;
+ dma_addr_t buf;
+ u32 trans;
length = urb->iso_frame_desc[i].length;
buf = dma + urb->iso_frame_desc[i].offset;
@@ -4251,11 +4091,8 @@ itd_sched_init(
}
}
-static void
-iso_sched_free(
- struct fotg210_iso_stream *stream,
- struct fotg210_iso_sched *iso_sched
-)
+static void iso_sched_free(struct fotg210_iso_stream *stream,
+ struct fotg210_iso_sched *iso_sched)
{
if (!iso_sched)
return;
@@ -4264,20 +4101,15 @@ iso_sched_free(
kfree(iso_sched);
}
-static int
-itd_urb_transaction(
- struct fotg210_iso_stream *stream,
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- gfp_t mem_flags
-)
+static int itd_urb_transaction(struct fotg210_iso_stream *stream,
+ struct fotg210_hcd *fotg210, struct urb *urb, gfp_t mem_flags)
{
- struct fotg210_itd *itd;
- dma_addr_t itd_dma;
- int i;
- unsigned num_itds;
- struct fotg210_iso_sched *sched;
- unsigned long flags;
+ struct fotg210_itd *itd;
+ dma_addr_t itd_dma;
+ int i;
+ unsigned num_itds;
+ struct fotg210_iso_sched *sched;
+ unsigned long flags;
sched = iso_sched_alloc(urb->number_of_packets, mem_flags);
if (unlikely(sched == NULL))
@@ -4306,7 +4138,7 @@ itd_urb_transaction(
list_del(&itd->itd_list);
itd_dma = itd->itd_dma;
} else {
- alloc_itd:
+alloc_itd:
spin_unlock_irqrestore(&fotg210->lock, flags);
itd = dma_pool_alloc(fotg210->itd_pool, mem_flags,
&itd_dma);
@@ -4330,16 +4162,8 @@ itd_urb_transaction(
return 0;
}
-/*-------------------------------------------------------------------------*/
-
-static inline int
-itd_slot_ok(
- struct fotg210_hcd *fotg210,
- u32 mod,
- u32 uframe,
- u8 usecs,
- u32 period
-)
+static inline int itd_slot_ok(struct fotg210_hcd *fotg210, u32 mod, u32 uframe,
+ u8 usecs, u32 period)
{
uframe %= period;
do {
@@ -4354,8 +4178,7 @@ itd_slot_ok(
return 1;
}
-/*
- * This scheduler plans almost as far into the future as it has actual
+/* This scheduler plans almost as far into the future as it has actual
* periodic schedule slots. (Affected by TUNE_FLS, which defaults to
* "as small as possible" to be cache-friendlier.) That limits the size
* transfers you can stream reliably; avoid more than 64 msec per urb.
@@ -4365,19 +4188,15 @@ itd_slot_ok(
* given FOTG210_TUNE_FLS and the slop). Or, write a smarter scheduler!
*/
-#define SCHEDULE_SLOP 80 /* microframes */
+#define SCHEDULE_SLOP 80 /* microframes */
-static int
-iso_stream_schedule(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct fotg210_iso_stream *stream
-)
+static int iso_stream_schedule(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct fotg210_iso_stream *stream)
{
- u32 now, next, start, period, span;
- int status;
- unsigned mod = fotg210->periodic_size << 3;
- struct fotg210_iso_sched *sched = urb->hcpriv;
+ u32 now, next, start, period, span;
+ int status;
+ unsigned mod = fotg210->periodic_size << 3;
+ struct fotg210_iso_sched *sched = urb->hcpriv;
period = urb->interval;
span = sched->span;
@@ -4396,7 +4215,7 @@ iso_stream_schedule(
* slot in the schedule, implicitly assuming URB_ISO_ASAP.
*/
if (likely(!list_empty(&stream->td_list))) {
- u32 excess;
+ u32 excess;
/* For high speed devices, allow scheduling within the
* isochronous scheduling threshold. For full speed devices
@@ -4435,6 +4254,7 @@ iso_stream_schedule(
*/
else {
int done = 0;
+
start = SCHEDULE_SLOP + (now & ~0x07);
/* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */
@@ -4457,15 +4277,15 @@ iso_stream_schedule(
/* no room in the schedule */
if (!done) {
fotg210_dbg(fotg210, "iso resched full %p (now %d max %d)\n",
- urb, now, now + mod);
+ urb, now, now + mod);
status = -ENOSPC;
goto fail;
}
}
/* Tried to schedule too far into the future? */
- if (unlikely(start - now + span - period
- >= mod - 2 * SCHEDULE_SLOP)) {
+ if (unlikely(start - now + span - period >=
+ mod - 2 * SCHEDULE_SLOP)) {
fotg210_dbg(fotg210, "request %p would overflow (%d+%d >= %d)\n",
urb, start - now, span - period,
mod - 2 * SCHEDULE_SLOP);
@@ -4485,17 +4305,14 @@ iso_stream_schedule(
fotg210->next_frame = now >> 3;
return 0;
- fail:
+fail:
iso_sched_free(stream, sched);
urb->hcpriv = NULL;
return status;
}
-/*-------------------------------------------------------------------------*/
-
-static inline void
-itd_init(struct fotg210_hcd *fotg210, struct fotg210_iso_stream *stream,
- struct fotg210_itd *itd)
+static inline void itd_init(struct fotg210_hcd *fotg210,
+ struct fotg210_iso_stream *stream, struct fotg210_itd *itd)
{
int i;
@@ -4511,17 +4328,12 @@ itd_init(struct fotg210_hcd *fotg210, struct fotg210_iso_stream *stream,
/* All other fields are filled when scheduling */
}
-static inline void
-itd_patch(
- struct fotg210_hcd *fotg210,
- struct fotg210_itd *itd,
- struct fotg210_iso_sched *iso_sched,
- unsigned index,
- u16 uframe
-)
+static inline void itd_patch(struct fotg210_hcd *fotg210,
+ struct fotg210_itd *itd, struct fotg210_iso_sched *iso_sched,
+ unsigned index, u16 uframe)
{
- struct fotg210_iso_packet *uf = &iso_sched->packet[index];
- unsigned pg = itd->pg;
+ struct fotg210_iso_packet *uf = &iso_sched->packet[index];
+ unsigned pg = itd->pg;
uframe &= 0x07;
itd->index[uframe] = index;
@@ -4533,7 +4345,7 @@ itd_patch(
/* iso_frame_desc[].offset must be strictly increasing */
if (unlikely(uf->cross)) {
- u64 bufp = uf->bufp + 4096;
+ u64 bufp = uf->bufp + 4096;
itd->pg = ++pg;
itd->hw_bufp[pg] |= cpu_to_hc32(fotg210, bufp & ~(u32)0);
@@ -4541,13 +4353,13 @@ itd_patch(
}
}
-static inline void
-itd_link(struct fotg210_hcd *fotg210, unsigned frame, struct fotg210_itd *itd)
+static inline void itd_link(struct fotg210_hcd *fotg210, unsigned frame,
+ struct fotg210_itd *itd)
{
- union fotg210_shadow *prev = &fotg210->pshadow[frame];
- __hc32 *hw_p = &fotg210->periodic[frame];
- union fotg210_shadow here = *prev;
- __hc32 type = 0;
+ union fotg210_shadow *prev = &fotg210->pshadow[frame];
+ __hc32 *hw_p = &fotg210->periodic[frame];
+ union fotg210_shadow here = *prev;
+ __hc32 type = 0;
/* skip any iso nodes which might belong to previous microframes */
while (here.ptr) {
@@ -4568,17 +4380,13 @@ itd_link(struct fotg210_hcd *fotg210, unsigned frame, struct fotg210_itd *itd)
}
/* fit urb's itds into the selected schedule slot; activate as needed */
-static void itd_link_urb(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- unsigned mod,
- struct fotg210_iso_stream *stream
-)
-{
- int packet;
- unsigned next_uframe, uframe, frame;
- struct fotg210_iso_sched *iso_sched = urb->hcpriv;
- struct fotg210_itd *itd;
+static void itd_link_urb(struct fotg210_hcd *fotg210, struct urb *urb,
+ unsigned mod, struct fotg210_iso_stream *stream)
+{
+ int packet;
+ unsigned next_uframe, uframe, frame;
+ struct fotg210_iso_sched *iso_sched = urb->hcpriv;
+ struct fotg210_itd *itd;
next_uframe = stream->next_uframe & (mod - 1);
@@ -4621,7 +4429,7 @@ static void itd_link_urb(
if (((next_uframe >> 3) != frame)
|| packet == urb->number_of_packets) {
itd_link(fotg210, frame & (fotg210->periodic_size - 1),
- itd);
+ itd);
itd = NULL;
}
}
@@ -4635,8 +4443,8 @@ static void itd_link_urb(
enable_periodic(fotg210);
}
-#define ISO_ERRS (FOTG210_ISOC_BUF_ERR | FOTG210_ISOC_BABBLE |\
- FOTG210_ISOC_XACTERR)
+#define ISO_ERRS (FOTG210_ISOC_BUF_ERR | FOTG210_ISOC_BABBLE |\
+ FOTG210_ISOC_XACTERR)
/* Process and recycle a completed ITD. Return true iff its urb completed,
* and hence its completion callback probably added things to the hardware
@@ -4650,14 +4458,14 @@ static void itd_link_urb(
*/
static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
{
- struct urb *urb = itd->urb;
- struct usb_iso_packet_descriptor *desc;
- u32 t;
- unsigned uframe;
- int urb_index = -1;
- struct fotg210_iso_stream *stream = itd->stream;
- struct usb_device *dev;
- bool retval = false;
+ struct urb *urb = itd->urb;
+ struct usb_iso_packet_descriptor *desc;
+ u32 t;
+ unsigned uframe;
+ int urb_index = -1;
+ struct fotg210_iso_stream *stream = itd->stream;
+ struct usb_device *dev;
+ bool retval = false;
/* for each uframe with a packet */
for (uframe = 0; uframe < 8; uframe++) {
@@ -4702,8 +4510,8 @@ static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
goto done;
/* ASSERT: it's really the last itd for this urb
- list_for_each_entry (itd, &stream->td_list, itd_list)
- BUG_ON (itd->urb == urb);
+ * list_for_each_entry (itd, &stream->td_list, itd_list)
+ * BUG_ON (itd->urb == urb);
*/
/* give urb back to the driver; completion often (re)submits */
@@ -4740,14 +4548,12 @@ done:
return retval;
}
-/*-------------------------------------------------------------------------*/
-
static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb,
- gfp_t mem_flags)
+ gfp_t mem_flags)
{
- int status = -EINVAL;
- unsigned long flags;
- struct fotg210_iso_stream *stream;
+ int status = -EINVAL;
+ unsigned long flags;
+ struct fotg210_iso_stream *stream;
/* Get iso_stream head */
stream = iso_stream_find(fotg210, urb);
@@ -4756,22 +4562,22 @@ static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb,
return -ENOMEM;
}
if (unlikely(urb->interval != stream->interval &&
- fotg210_port_speed(fotg210, 0) ==
- USB_PORT_STAT_HIGH_SPEED)) {
- fotg210_dbg(fotg210, "can't change iso interval %d --> %d\n",
+ fotg210_port_speed(fotg210, 0) ==
+ USB_PORT_STAT_HIGH_SPEED)) {
+ fotg210_dbg(fotg210, "can't change iso interval %d --> %d\n",
stream->interval, urb->interval);
- goto done;
+ goto done;
}
#ifdef FOTG210_URB_TRACE
fotg210_dbg(fotg210,
- "%s %s urb %p ep%d%s len %d, %d pkts %d uframes[%p]\n",
- __func__, urb->dev->devpath, urb,
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out",
- urb->transfer_buffer_length,
- urb->number_of_packets, urb->interval,
- stream);
+ "%s %s urb %p ep%d%s len %d, %d pkts %d uframes[%p]\n",
+ __func__, urb->dev->devpath, urb,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out",
+ urb->transfer_buffer_length,
+ urb->number_of_packets, urb->interval,
+ stream);
#endif
/* allocate ITDs w/o locking anything */
@@ -4795,19 +4601,87 @@ static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb,
itd_link_urb(fotg210, urb, fotg210->periodic_size << 3, stream);
else
usb_hcd_unlink_urb_from_ep(fotg210_to_hcd(fotg210), urb);
- done_not_linked:
+done_not_linked:
spin_unlock_irqrestore(&fotg210->lock, flags);
- done:
+done:
return status;
}
-/*-------------------------------------------------------------------------*/
+static inline int scan_frame_queue(struct fotg210_hcd *fotg210, unsigned frame,
+ unsigned now_frame, bool live)
+{
+ unsigned uf;
+ bool modified;
+ union fotg210_shadow q, *q_p;
+ __hc32 type, *hw_p;
+
+ /* scan each element in frame's queue for completions */
+ q_p = &fotg210->pshadow[frame];
+ hw_p = &fotg210->periodic[frame];
+ q.ptr = q_p->ptr;
+ type = Q_NEXT_TYPE(fotg210, *hw_p);
+ modified = false;
+
+ while (q.ptr) {
+ switch (hc32_to_cpu(fotg210, type)) {
+ case Q_TYPE_ITD:
+ /* If this ITD is still active, leave it for
+ * later processing ... check the next entry.
+ * No need to check for activity unless the
+ * frame is current.
+ */
+ if (frame == now_frame && live) {
+ rmb();
+ for (uf = 0; uf < 8; uf++) {
+ if (q.itd->hw_transaction[uf] &
+ ITD_ACTIVE(fotg210))
+ break;
+ }
+ if (uf < 8) {
+ q_p = &q.itd->itd_next;
+ hw_p = &q.itd->hw_next;
+ type = Q_NEXT_TYPE(fotg210,
+ q.itd->hw_next);
+ q = *q_p;
+ break;
+ }
+ }
+
+ /* Take finished ITDs out of the schedule
+ * and process them: recycle, maybe report
+ * URB completion. HC won't cache the
+ * pointer for much longer, if at all.
+ */
+ *q_p = q.itd->itd_next;
+ *hw_p = q.itd->hw_next;
+ type = Q_NEXT_TYPE(fotg210, q.itd->hw_next);
+ wmb();
+ modified = itd_complete(fotg210, q.itd);
+ q = *q_p;
+ break;
+ default:
+ fotg210_dbg(fotg210, "corrupt type %d frame %d shadow %p\n",
+ type, frame, q.ptr);
+ /* FALL THROUGH */
+ case Q_TYPE_QH:
+ case Q_TYPE_FSTN:
+ /* End of the iTDs and siTDs */
+ q.ptr = NULL;
+ break;
+ }
+
+ /* assume completion callbacks modify the queue */
+ if (unlikely(modified && fotg210->isoc_count > 0))
+ return -EINVAL;
+ }
+ return 0;
+}
static void scan_isoc(struct fotg210_hcd *fotg210)
{
- unsigned uf, now_frame, frame;
- unsigned fmask = fotg210->periodic_size - 1;
- bool modified, live;
+ unsigned uf, now_frame, frame, ret;
+ unsigned fmask = fotg210->periodic_size - 1;
+ bool live;
/*
* When running, scan from last scan point up to "now"
@@ -4826,69 +4700,10 @@ static void scan_isoc(struct fotg210_hcd *fotg210)
frame = fotg210->next_frame;
for (;;) {
- union fotg210_shadow q, *q_p;
- __hc32 type, *hw_p;
-
-restart:
- /* scan each element in frame's queue for completions */
- q_p = &fotg210->pshadow[frame];
- hw_p = &fotg210->periodic[frame];
- q.ptr = q_p->ptr;
- type = Q_NEXT_TYPE(fotg210, *hw_p);
- modified = false;
-
- while (q.ptr != NULL) {
- switch (hc32_to_cpu(fotg210, type)) {
- case Q_TYPE_ITD:
- /* If this ITD is still active, leave it for
- * later processing ... check the next entry.
- * No need to check for activity unless the
- * frame is current.
- */
- if (frame == now_frame && live) {
- rmb();
- for (uf = 0; uf < 8; uf++) {
- if (q.itd->hw_transaction[uf] &
- ITD_ACTIVE(fotg210))
- break;
- }
- if (uf < 8) {
- q_p = &q.itd->itd_next;
- hw_p = &q.itd->hw_next;
- type = Q_NEXT_TYPE(fotg210,
- q.itd->hw_next);
- q = *q_p;
- break;
- }
- }
-
- /* Take finished ITDs out of the schedule
- * and process them: recycle, maybe report
- * URB completion. HC won't cache the
- * pointer for much longer, if at all.
- */
- *q_p = q.itd->itd_next;
- *hw_p = q.itd->hw_next;
- type = Q_NEXT_TYPE(fotg210, q.itd->hw_next);
- wmb();
- modified = itd_complete(fotg210, q.itd);
- q = *q_p;
- break;
- default:
- fotg210_dbg(fotg210, "corrupt type %d frame %d shadow %p\n",
- type, frame, q.ptr);
- /* FALL THROUGH */
- case Q_TYPE_QH:
- case Q_TYPE_FSTN:
- /* End of the iTDs and siTDs */
- q.ptr = NULL;
- break;
- }
-
- /* assume completion callbacks modify the queue */
- if (unlikely(modified && fotg210->isoc_count > 0))
- goto restart;
- }
+ ret = 1;
+ while (ret != 0)
+ ret = scan_frame_queue(fotg210, frame,
+ now_frame, live);
/* Stop when we have reached the current frame */
if (frame == now_frame)
@@ -4897,16 +4712,14 @@ restart:
}
fotg210->next_frame = now_frame;
}
-/*-------------------------------------------------------------------------*/
-/*
- * Display / Set uframe_periodic_max
+
+/* Display / Set uframe_periodic_max
*/
static ssize_t show_uframe_periodic_max(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+ struct device_attribute *attr, char *buf)
{
- struct fotg210_hcd *fotg210;
- int n;
+ struct fotg210_hcd *fotg210;
+ int n;
fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev)));
n = scnprintf(buf, PAGE_SIZE, "%d\n", fotg210->uframe_periodic_max);
@@ -4915,15 +4728,14 @@ static ssize_t show_uframe_periodic_max(struct device *dev,
static ssize_t store_uframe_periodic_max(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+ struct device_attribute *attr, const char *buf, size_t count)
{
- struct fotg210_hcd *fotg210;
- unsigned uframe_periodic_max;
- unsigned frame, uframe;
- unsigned short allocated_max;
- unsigned long flags;
- ssize_t ret;
+ struct fotg210_hcd *fotg210;
+ unsigned uframe_periodic_max;
+ unsigned frame, uframe;
+ unsigned short allocated_max;
+ unsigned long flags;
+ ssize_t ret;
fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev)));
if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
@@ -4931,7 +4743,7 @@ static ssize_t store_uframe_periodic_max(struct device *dev,
if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
fotg210_info(fotg210, "rejecting invalid request for uframe_periodic_max=%u\n",
- uframe_periodic_max);
+ uframe_periodic_max);
return -EINVAL;
}
@@ -4954,22 +4766,22 @@ static ssize_t store_uframe_periodic_max(struct device *dev,
for (frame = 0; frame < fotg210->periodic_size; ++frame)
for (uframe = 0; uframe < 7; ++uframe)
allocated_max = max(allocated_max,
- periodic_usecs(fotg210, frame, uframe));
+ periodic_usecs(fotg210, frame,
+ uframe));
if (allocated_max > uframe_periodic_max) {
fotg210_info(fotg210,
- "cannot decrease uframe_periodic_max because "
- "periodic bandwidth is already allocated "
- "(%u > %u)\n",
- allocated_max, uframe_periodic_max);
+ "cannot decrease uframe_periodic_max because periodic bandwidth is already allocated (%u > %u)\n",
+ allocated_max, uframe_periodic_max);
goto out_unlock;
}
}
/* increasing is always ok */
- fotg210_info(fotg210, "setting max periodic bandwidth to %u%% (== %u usec/uframe)\n",
- 100 * uframe_periodic_max/125, uframe_periodic_max);
+ fotg210_info(fotg210,
+ "setting max periodic bandwidth to %u%% (== %u usec/uframe)\n",
+ 100 * uframe_periodic_max/125, uframe_periodic_max);
if (uframe_periodic_max != 100)
fotg210_warn(fotg210, "max periodic bandwidth set is non-standard\n");
@@ -4987,8 +4799,8 @@ static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max,
static inline int create_sysfs_files(struct fotg210_hcd *fotg210)
{
- struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
- int i = 0;
+ struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
+ int i = 0;
if (i)
goto out;
@@ -5000,12 +4812,10 @@ out:
static inline void remove_sysfs_files(struct fotg210_hcd *fotg210)
{
- struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
+ struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
device_remove_file(controller, &dev_attr_uframe_periodic_max);
}
-/*-------------------------------------------------------------------------*/
-
/* On some systems, leaving remote wakeup enabled prevents system shutdown.
* The firmware seems to think that powering off is a wakeup event!
* This routine turns off remote wakeup and everything else, on all ports.
@@ -5017,8 +4827,7 @@ static void fotg210_turn_off_all_ports(struct fotg210_hcd *fotg210)
fotg210_writel(fotg210, PORT_RWC_BITS, status_reg);
}
-/*
- * Halt HC, turn off all ports, and let the BIOS use the companion controllers.
+/* Halt HC, turn off all ports, and let the BIOS use the companion controllers.
* Must be called with interrupts enabled and the lock not held.
*/
static void fotg210_silence_controller(struct fotg210_hcd *fotg210)
@@ -5037,7 +4846,7 @@ static void fotg210_silence_controller(struct fotg210_hcd *fotg210)
*/
static void fotg210_shutdown(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
spin_lock_irq(&fotg210->lock);
fotg210->shutdown = true;
@@ -5050,10 +4859,7 @@ static void fotg210_shutdown(struct usb_hcd *hcd)
hrtimer_cancel(&fotg210->hrtimer);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * fotg210_work is called from some interrupts, timers, and so on.
+/* fotg210_work is called from some interrupts, timers, and so on.
* it calls driver completion functions, after dropping fotg210->lock.
*/
static void fotg210_work(struct fotg210_hcd *fotg210)
@@ -5068,7 +4874,7 @@ static void fotg210_work(struct fotg210_hcd *fotg210)
}
fotg210->scanning = true;
- rescan:
+rescan:
fotg210->need_rescan = false;
if (fotg210->async_count)
scan_async(fotg210);
@@ -5087,12 +4893,11 @@ static void fotg210_work(struct fotg210_hcd *fotg210)
turn_on_io_watchdog(fotg210);
}
-/*
- * Called when the fotg210_hcd module is removed.
+/* Called when the fotg210_hcd module is removed.
*/
static void fotg210_stop(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
fotg210_dbg(fotg210, "stop\n");
@@ -5116,26 +4921,26 @@ static void fotg210_stop(struct usb_hcd *hcd)
spin_unlock_irq(&fotg210->lock);
fotg210_mem_cleanup(fotg210);
-#ifdef FOTG210_STATS
+#ifdef FOTG210_STATS
fotg210_dbg(fotg210, "irq normal %ld err %ld iaa %ld (lost %ld)\n",
- fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa,
- fotg210->stats.lost_iaa);
+ fotg210->stats.normal, fotg210->stats.error,
+ fotg210->stats.iaa, fotg210->stats.lost_iaa);
fotg210_dbg(fotg210, "complete %ld unlink %ld\n",
- fotg210->stats.complete, fotg210->stats.unlink);
+ fotg210->stats.complete, fotg210->stats.unlink);
#endif
dbg_status(fotg210, "fotg210_stop completed",
- fotg210_readl(fotg210, &fotg210->regs->status));
+ fotg210_readl(fotg210, &fotg210->regs->status));
}
/* one-time init, only for memory state */
static int hcd_fotg210_init(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 temp;
- int retval;
- u32 hcc_params;
- struct fotg210_qh_hw *hw;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 temp;
+ int retval;
+ u32 hcc_params;
+ struct fotg210_qh_hw *hw;
spin_lock_init(&fotg210->lock);
@@ -5238,18 +5043,18 @@ static int hcd_fotg210_init(struct usb_hcd *hcd)
/* start HC running; it's halted, hcd_fotg210_init() has been run (once) */
static int fotg210_run(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 temp;
- u32 hcc_params;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 temp;
+ u32 hcc_params;
hcd->uses_new_polling = 1;
/* EHCI spec section 4.1 */
fotg210_writel(fotg210, fotg210->periodic_dma,
- &fotg210->regs->frame_list);
+ &fotg210->regs->frame_list);
fotg210_writel(fotg210, (u32)fotg210->async->qh_dma,
- &fotg210->regs->async_next);
+ &fotg210->regs->async_next);
/*
* hcc_params controls whether fotg210->regs->segment must (!!!)
@@ -5258,7 +5063,7 @@ static int fotg210_run(struct usb_hcd *hcd)
* streaming mappings for I/O buffers, like pci_map_single(),
* can return segments above 4GB, if the device allows.
*
- * NOTE: the dma mask is visible through dma_supported(), so
+ * NOTE: the dma mask is visible through dev->dma_mask, so
* drivers can pass this info along ... like NETIF_F_HIGHDMA,
* Scsi_Host.highmem_io, and so forth. It's readonly to all
* host side drivers though.
@@ -5292,19 +5097,19 @@ static int fotg210_run(struct usb_hcd *hcd)
fotg210->rh_state = FOTG210_RH_RUNNING;
/* unblock posted writes */
fotg210_readl(fotg210, &fotg210->regs->command);
- msleep(5);
+ usleep_range(5000, 10000);
up_write(&ehci_cf_port_reset_rwsem);
fotg210->last_periodic_enable = ktime_get_real();
temp = HC_VERSION(fotg210,
- fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
+ fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
fotg210_info(fotg210,
- "USB %x.%x started, EHCI %x.%02x\n",
- ((fotg210->sbrn & 0xf0)>>4), (fotg210->sbrn & 0x0f),
- temp >> 8, temp & 0xff);
+ "USB %x.%x started, EHCI %x.%02x\n",
+ ((fotg210->sbrn & 0xf0) >> 4), (fotg210->sbrn & 0x0f),
+ temp >> 8, temp & 0xff);
fotg210_writel(fotg210, INTR_MASK,
- &fotg210->regs->intr_enable); /* Turn On Interrupts */
+ &fotg210->regs->intr_enable); /* Turn On Interrupts */
/* GRR this is run-once init(), being done every time the HC starts.
* So long as they're part of class devices, we can't do it init()
@@ -5322,14 +5127,14 @@ static int fotg210_setup(struct usb_hcd *hcd)
int retval;
fotg210->regs = (void __iomem *)fotg210->caps +
- HC_LENGTH(fotg210,
- fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
+ HC_LENGTH(fotg210,
+ fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
dbg_hcs_params(fotg210, "reset");
dbg_hcc_params(fotg210, "reset");
/* cache this readonly data; minimize chip reads */
fotg210->hcs_params = fotg210_readl(fotg210,
- &fotg210->caps->hcs_params);
+ &fotg210->caps->hcs_params);
fotg210->sbrn = HCD_USB2;
@@ -5347,13 +5152,11 @@ static int fotg210_setup(struct usb_hcd *hcd)
return 0;
}
-/*-------------------------------------------------------------------------*/
-
static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 status, masked_status, pcd_status = 0, cmd;
- int bh;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 status, masked_status, pcd_status = 0, cmd;
+ int bh;
spin_lock(&fotg210->lock);
@@ -5373,7 +5176,7 @@ static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
/* Shared IRQ? */
if (!masked_status ||
- unlikely(fotg210->rh_state == FOTG210_RH_HALTED)) {
+ unlikely(fotg210->rh_state == FOTG210_RH_HALTED)) {
spin_unlock(&fotg210->lock);
return IRQ_NONE;
}
@@ -5440,7 +5243,7 @@ static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
if (test_bit(0, &fotg210->suspended_ports) &&
((pstatus & PORT_RESUME) ||
- !(pstatus & PORT_SUSPEND)) &&
+ !(pstatus & PORT_SUSPEND)) &&
(pstatus & PORT_PE) &&
fotg210->reset_done[0] == 0) {
@@ -5469,7 +5272,7 @@ dead:
fotg210->rh_state = FOTG210_RH_STOPPING;
fotg210->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE);
fotg210_writel(fotg210, fotg210->command,
- &fotg210->regs->command);
+ &fotg210->regs->command);
fotg210_writel(fotg210, 0, &fotg210->regs->intr_enable);
fotg210_handle_controller_death(fotg210);
@@ -5485,10 +5288,7 @@ dead:
return IRQ_HANDLED;
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * non-error returns are a promise to giveback() the urb later
+/* non-error returns are a promise to giveback() the urb later
* we drop ownership so next owner (or urb unlink) can get it
*
* urb + dev is in hcd.self.controller.urb_list
@@ -5499,13 +5299,11 @@ dead:
* NOTE: control, bulk, and interrupt share the same code to append TDs
* to a (possibly active) QH, and the same QH scanning code.
*/
-static int fotg210_urb_enqueue(
- struct usb_hcd *hcd,
- struct urb *urb,
- gfp_t mem_flags
-) {
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct list_head qtd_list;
+static int fotg210_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct list_head qtd_list;
INIT_LIST_HEAD(&qtd_list);
@@ -5539,10 +5337,10 @@ static int fotg210_urb_enqueue(
static int fotg210_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct fotg210_qh *qh;
- unsigned long flags;
- int rc;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_qh *qh;
+ unsigned long flags;
+ int rc;
spin_lock_irqsave(&fotg210->lock, flags);
rc = usb_hcd_check_unlink_urb(hcd, urb, status);
@@ -5603,16 +5401,14 @@ done:
return rc;
}
-/*-------------------------------------------------------------------------*/
-
/* bulk qh holds the data toggle */
-static void
-fotg210_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+static void fotg210_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- unsigned long flags;
- struct fotg210_qh *qh, *tmp;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ unsigned long flags;
+ struct fotg210_qh *qh, *tmp;
/* ASSERT: any requests/urbs are being unlinked */
/* ASSERT: nobody can be submitting urbs for this any more */
@@ -5627,7 +5423,7 @@ rescan:
* accelerate iso completions ... so spin a while.
*/
if (qh->hw == NULL) {
- struct fotg210_iso_stream *stream = ep->hcpriv;
+ struct fotg210_iso_stream *stream = ep->hcpriv;
if (!list_empty(&stream->td_list))
goto idle_timeout;
@@ -5671,24 +5467,24 @@ idle_timeout:
* that's not our job. just leak this memory.
*/
fotg210_err(fotg210, "qh %p (#%02x) state %d%s\n",
- qh, ep->desc.bEndpointAddress, qh->qh_state,
- list_empty(&qh->qtd_list) ? "" : "(has tds)");
+ qh, ep->desc.bEndpointAddress, qh->qh_state,
+ list_empty(&qh->qtd_list) ? "" : "(has tds)");
break;
}
- done:
+done:
ep->hcpriv = NULL;
spin_unlock_irqrestore(&fotg210->lock, flags);
}
-static void
-fotg210_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+static void fotg210_endpoint_reset(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct fotg210_qh *qh;
- int eptype = usb_endpoint_type(&ep->desc);
- int epnum = usb_endpoint_num(&ep->desc);
- int is_out = usb_endpoint_dir_out(&ep->desc);
- unsigned long flags;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_qh *qh;
+ int eptype = usb_endpoint_type(&ep->desc);
+ int epnum = usb_endpoint_num(&ep->desc);
+ int is_out = usb_endpoint_dir_out(&ep->desc);
+ unsigned long flags;
if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT)
return;
@@ -5723,15 +5519,13 @@ fotg210_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
static int fotg210_get_frame(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+
return (fotg210_read_frame_index(fotg210) >> 3) %
fotg210->periodic_size;
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * The EHCI in ChipIdea HDRC cannot be a separate module or device,
+/* The EHCI in ChipIdea HDRC cannot be a separate module or device,
* because its registers (and irq) are shared between host/gadget/otg
* functions and in order to facilitate role switching we cannot
* give the fotg210 driver exclusive access to those.
@@ -5791,7 +5585,7 @@ static void fotg210_init(struct fotg210_hcd *fotg210)
u32 value;
iowrite32(GMIR_MDEV_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY,
- &fotg210->regs->gmir);
+ &fotg210->regs->gmir);
value = ioread32(&fotg210->regs->otgcsr);
value &= ~OTGCSR_A_BUS_DROP;
@@ -5808,12 +5602,12 @@ static void fotg210_init(struct fotg210_hcd *fotg210)
*/
static int fotg210_hcd_probe(struct platform_device *pdev)
{
- struct device *dev = &pdev->dev;
- struct usb_hcd *hcd;
- struct resource *res;
- int irq;
- int retval = -ENODEV;
- struct fotg210_hcd *fotg210;
+ struct device *dev = &pdev->dev;
+ struct usb_hcd *hcd;
+ struct resource *res;
+ int irq;
+ int retval = -ENODEV;
+ struct fotg210_hcd *fotg210;
if (usb_disabled())
return -ENODEV;
@@ -5822,9 +5616,8 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
- dev_err(dev,
- "Found HC with no IRQ. Check %s setup!\n",
- dev_name(dev));
+ dev_err(dev, "Found HC with no IRQ. Check %s setup!\n",
+ dev_name(dev));
return -ENODEV;
}
@@ -5883,8 +5676,8 @@ fail_create_hcd:
*/
static int fotg210_hcd_remove(struct platform_device *pdev)
{
- struct device *dev = &pdev->dev;
- struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct device *dev = &pdev->dev;
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
if (!hcd)
return 0;
@@ -5914,12 +5707,12 @@ static int __init fotg210_hcd_init(void)
set_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) ||
test_bit(USB_OHCI_LOADED, &usb_hcds_loaded))
- pr_warn(KERN_WARNING "Warning! fotg210_hcd should always be loaded before uhci_hcd and ohci_hcd, not after\n");
+ pr_warn("Warning! fotg210_hcd should always be loaded before uhci_hcd and ohci_hcd, not after\n");
pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n",
- hcd_name,
- sizeof(struct fotg210_qh), sizeof(struct fotg210_qtd),
- sizeof(struct fotg210_itd));
+ hcd_name, sizeof(struct fotg210_qh),
+ sizeof(struct fotg210_qtd),
+ sizeof(struct fotg210_itd));
fotg210_debug_root = debugfs_create_dir("fotg210", usb_debug_root);
if (!fotg210_debug_root) {
@@ -5932,7 +5725,6 @@ static int __init fotg210_hcd_init(void)
goto clean;
return retval;
- platform_driver_unregister(&fotg210_hcd_driver);
clean:
debugfs_remove(fotg210_debug_root);
fotg210_debug_root = NULL;
diff --git a/kernel/drivers/usb/host/fotg210.h b/kernel/drivers/usb/host/fotg210.h
index 3bad17859..b5cfa7aeb 100644
--- a/kernel/drivers/usb/host/fotg210.h
+++ b/kernel/drivers/usb/host/fotg210.h
@@ -137,19 +137,25 @@ struct fotg210_hcd { /* one per controller */
/* per root hub port */
unsigned long reset_done[FOTG210_MAX_ROOT_PORTS];
- /* bit vectors (one bit per port) */
- unsigned long bus_suspended; /* which ports were
- already suspended at the start of a bus suspend */
- unsigned long companion_ports; /* which ports are
- dedicated to the companion controller */
- unsigned long owned_ports; /* which ports are
- owned by the companion during a bus suspend */
- unsigned long port_c_suspend; /* which ports have
- the change-suspend feature turned on */
- unsigned long suspended_ports; /* which ports are
- suspended */
- unsigned long resuming_ports; /* which ports have
- started to resume */
+ /* bit vectors (one bit per port)
+ * which ports were already suspended at the start of a bus suspend
+ */
+ unsigned long bus_suspended;
+
+ /* which ports are edicated to the companion controller */
+ unsigned long companion_ports;
+
+ /* which ports are owned by the companion during a bus suspend */
+ unsigned long owned_ports;
+
+ /* which ports have the change-suspend feature turned on */
+ unsigned long port_c_suspend;
+
+ /* which ports are suspended */
+ unsigned long suspended_ports;
+
+ /* which ports have started to resume */
+ unsigned long resuming_ports;
/* per-HC memory pools (could be per-bus, but ...) */
struct dma_pool *qh_pool; /* qh per active urb */
@@ -585,10 +591,10 @@ struct fotg210_fstn {
/* Prepare the PORTSC wakeup flags during controller suspend/resume */
#define fotg210_prepare_ports_for_controller_suspend(fotg210, do_wakeup) \
- fotg210_adjust_port_wakeup_flags(fotg210, true, do_wakeup);
+ fotg210_adjust_port_wakeup_flags(fotg210, true, do_wakeup)
#define fotg210_prepare_ports_for_controller_resume(fotg210) \
- fotg210_adjust_port_wakeup_flags(fotg210, false, false);
+ fotg210_adjust_port_wakeup_flags(fotg210, false, false)
/*-------------------------------------------------------------------------*/
diff --git a/kernel/drivers/usb/host/fsl-mph-dr-of.c b/kernel/drivers/usb/host/fsl-mph-dr-of.c
index 7e325e90d..0c382652a 100644
--- a/kernel/drivers/usb/host/fsl-mph-dr-of.c
+++ b/kernel/drivers/usb/host/fsl-mph-dr-of.c
@@ -69,6 +69,8 @@ static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
return FSL_USB2_PHY_UTMI;
if (!strcasecmp(phy_type, "utmi_wide"))
return FSL_USB2_PHY_UTMI_WIDE;
+ if (!strcasecmp(phy_type, "utmi_dual"))
+ return FSL_USB2_PHY_UTMI_DUAL;
if (!strcasecmp(phy_type, "serial"))
return FSL_USB2_PHY_SERIAL;
@@ -119,13 +121,15 @@ error:
static const struct of_device_id fsl_usb2_mph_dr_of_match[];
-static int usb_get_ver_info(struct device_node *np)
+static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np)
{
- int ver = -1;
+ enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE;
/*
* returns 1 for usb controller version 1.6
* returns 2 for usb controller version 2.2
+ * returns 3 for usb controller version 2.4
+ * returns 4 for usb controller version 2.5
* returns 0 otherwise
*/
if (of_device_is_compatible(np, "fsl-usb2-dr")) {
@@ -135,10 +139,12 @@ static int usb_get_ver_info(struct device_node *np)
ver = FSL_USB_VER_2_2;
else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
ver = FSL_USB_VER_2_4;
+ else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5"))
+ ver = FSL_USB_VER_2_5;
else /* for previous controller versions */
ver = FSL_USB_VER_OLD;
- if (ver > -1)
+ if (ver > FSL_USB_VER_NONE)
return ver;
}
@@ -150,6 +156,10 @@ static int usb_get_ver_info(struct device_node *np)
ver = FSL_USB_VER_1_6;
else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
ver = FSL_USB_VER_2_2;
+ else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4"))
+ ver = FSL_USB_VER_2_4;
+ else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5"))
+ ver = FSL_USB_VER_2_5;
else /* for previous controller versions */
ver = FSL_USB_VER_OLD;
}
@@ -206,8 +216,27 @@ static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
pdata->phy_mode = determine_usb_phy(prop);
pdata->controller_ver = usb_get_ver_info(np);
+ /* Activate Erratum by reading property in device tree */
+ if (of_get_property(np, "fsl,usb-erratum-a007792", NULL))
+ pdata->has_fsl_erratum_a007792 = 1;
+ else
+ pdata->has_fsl_erratum_a007792 = 0;
+ if (of_get_property(np, "fsl,usb-erratum-a005275", NULL))
+ pdata->has_fsl_erratum_a005275 = 1;
+ else
+ pdata->has_fsl_erratum_a005275 = 0;
+
+ /*
+ * Determine whether phy_clk_valid needs to be checked
+ * by reading property in device tree
+ */
+ if (of_get_property(np, "phy-clk-valid", NULL))
+ pdata->check_phy_clk_valid = 1;
+ else
+ pdata->check_phy_clk_valid = 0;
+
if (pdata->have_sysif_regs) {
- if (pdata->controller_ver < 0) {
+ if (pdata->controller_ver == FSL_USB_VER_NONE) {
dev_warn(&ofdev->dev, "Could not get controller version\n");
return -ENODEV;
}
@@ -322,6 +351,7 @@ static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
#endif
{},
};
+MODULE_DEVICE_TABLE(of, fsl_usb2_mph_dr_of_match);
static struct platform_driver fsl_usb2_mph_dr_driver = {
.driver = {
diff --git a/kernel/drivers/usb/host/fusbh200-hcd.c b/kernel/drivers/usb/host/fusbh200-hcd.c
deleted file mode 100644
index 00e492eab..000000000
--- a/kernel/drivers/usb/host/fusbh200-hcd.c
+++ /dev/null
@@ -1,5893 +0,0 @@
-/*
- * Faraday FUSBH200 EHCI-like driver
- *
- * Copyright (c) 2013 Faraday Technology Corporation
- *
- * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com>
- * Feng-Hsin Chiang <john453@faraday-tech.com>
- * Po-Yu Chuang <ratbert.chuang@gmail.com>
- *
- * Most of code borrowed from the Linux-3.7 EHCI driver
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/dmapool.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/vmalloc.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/hrtimer.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-#include <linux/moduleparam.h>
-#include <linux/dma-mapping.h>
-#include <linux/debugfs.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/platform_device.h>
-
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/unaligned.h>
-
-/*-------------------------------------------------------------------------*/
-#define DRIVER_AUTHOR "Yuan-Hsin Chen"
-#define DRIVER_DESC "FUSBH200 Host Controller (EHCI) Driver"
-
-static const char hcd_name [] = "fusbh200_hcd";
-
-#undef FUSBH200_URB_TRACE
-
-/* magic numbers that can affect system performance */
-#define FUSBH200_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */
-#define FUSBH200_TUNE_RL_HS 4 /* nak throttle; see 4.9 */
-#define FUSBH200_TUNE_RL_TT 0
-#define FUSBH200_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */
-#define FUSBH200_TUNE_MULT_TT 1
-/*
- * Some drivers think it's safe to schedule isochronous transfers more than
- * 256 ms into the future (partly as a result of an old bug in the scheduling
- * code). In an attempt to avoid trouble, we will use a minimum scheduling
- * length of 512 frames instead of 256.
- */
-#define FUSBH200_TUNE_FLS 1 /* (medium) 512-frame schedule */
-
-/* Initial IRQ latency: faster than hw default */
-static int log2_irq_thresh = 0; // 0 to 6
-module_param (log2_irq_thresh, int, S_IRUGO);
-MODULE_PARM_DESC (log2_irq_thresh, "log2 IRQ latency, 1-64 microframes");
-
-/* initial park setting: slower than hw default */
-static unsigned park = 0;
-module_param (park, uint, S_IRUGO);
-MODULE_PARM_DESC (park, "park setting; 1-3 back-to-back async packets");
-
-/* for link power management(LPM) feature */
-static unsigned int hird;
-module_param(hird, int, S_IRUGO);
-MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
-
-#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
-
-#include "fusbh200.h"
-
-/*-------------------------------------------------------------------------*/
-
-#define fusbh200_dbg(fusbh200, fmt, args...) \
- dev_dbg (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_err(fusbh200, fmt, args...) \
- dev_err (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_info(fusbh200, fmt, args...) \
- dev_info (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_warn(fusbh200, fmt, args...) \
- dev_warn (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-
-/* check the values in the HCSPARAMS register
- * (host controller _Structural_ parameters)
- * see EHCI spec, Table 2-4 for each value
- */
-static void dbg_hcs_params (struct fusbh200_hcd *fusbh200, char *label)
-{
- u32 params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-
- fusbh200_dbg (fusbh200,
- "%s hcs_params 0x%x ports=%d\n",
- label, params,
- HCS_N_PORTS (params)
- );
-}
-
-/* check the values in the HCCPARAMS register
- * (host controller _Capability_ parameters)
- * see EHCI Spec, Table 2-5 for each value
- * */
-static void dbg_hcc_params (struct fusbh200_hcd *fusbh200, char *label)
-{
- u32 params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
- fusbh200_dbg (fusbh200,
- "%s hcc_params %04x uframes %s%s\n",
- label,
- params,
- HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
- HCC_CANPARK(params) ? " park" : "");
-}
-
-static void __maybe_unused
-dbg_qtd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd)
-{
- fusbh200_dbg(fusbh200, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
- hc32_to_cpup(fusbh200, &qtd->hw_next),
- hc32_to_cpup(fusbh200, &qtd->hw_alt_next),
- hc32_to_cpup(fusbh200, &qtd->hw_token),
- hc32_to_cpup(fusbh200, &qtd->hw_buf [0]));
- if (qtd->hw_buf [1])
- fusbh200_dbg(fusbh200, " p1=%08x p2=%08x p3=%08x p4=%08x\n",
- hc32_to_cpup(fusbh200, &qtd->hw_buf[1]),
- hc32_to_cpup(fusbh200, &qtd->hw_buf[2]),
- hc32_to_cpup(fusbh200, &qtd->hw_buf[3]),
- hc32_to_cpup(fusbh200, &qtd->hw_buf[4]));
-}
-
-static void __maybe_unused
-dbg_qh (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- struct fusbh200_qh_hw *hw = qh->hw;
-
- fusbh200_dbg (fusbh200, "%s qh %p n%08x info %x %x qtd %x\n", label,
- qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
- dbg_qtd("overlay", fusbh200, (struct fusbh200_qtd *) &hw->hw_qtd_next);
-}
-
-static void __maybe_unused
-dbg_itd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd)
-{
- fusbh200_dbg (fusbh200, "%s [%d] itd %p, next %08x, urb %p\n",
- label, itd->frame, itd, hc32_to_cpu(fusbh200, itd->hw_next),
- itd->urb);
- fusbh200_dbg (fusbh200,
- " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
- hc32_to_cpu(fusbh200, itd->hw_transaction[0]),
- hc32_to_cpu(fusbh200, itd->hw_transaction[1]),
- hc32_to_cpu(fusbh200, itd->hw_transaction[2]),
- hc32_to_cpu(fusbh200, itd->hw_transaction[3]),
- hc32_to_cpu(fusbh200, itd->hw_transaction[4]),
- hc32_to_cpu(fusbh200, itd->hw_transaction[5]),
- hc32_to_cpu(fusbh200, itd->hw_transaction[6]),
- hc32_to_cpu(fusbh200, itd->hw_transaction[7]));
- fusbh200_dbg (fusbh200,
- " buf: %08x %08x %08x %08x %08x %08x %08x\n",
- hc32_to_cpu(fusbh200, itd->hw_bufp[0]),
- hc32_to_cpu(fusbh200, itd->hw_bufp[1]),
- hc32_to_cpu(fusbh200, itd->hw_bufp[2]),
- hc32_to_cpu(fusbh200, itd->hw_bufp[3]),
- hc32_to_cpu(fusbh200, itd->hw_bufp[4]),
- hc32_to_cpu(fusbh200, itd->hw_bufp[5]),
- hc32_to_cpu(fusbh200, itd->hw_bufp[6]));
- fusbh200_dbg (fusbh200, " index: %d %d %d %d %d %d %d %d\n",
- itd->index[0], itd->index[1], itd->index[2],
- itd->index[3], itd->index[4], itd->index[5],
- itd->index[6], itd->index[7]);
-}
-
-static int __maybe_unused
-dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
-{
- return scnprintf (buf, len,
- "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
- label, label [0] ? " " : "", status,
- (status & STS_ASS) ? " Async" : "",
- (status & STS_PSS) ? " Periodic" : "",
- (status & STS_RECL) ? " Recl" : "",
- (status & STS_HALT) ? " Halt" : "",
- (status & STS_IAA) ? " IAA" : "",
- (status & STS_FATAL) ? " FATAL" : "",
- (status & STS_FLR) ? " FLR" : "",
- (status & STS_PCD) ? " PCD" : "",
- (status & STS_ERR) ? " ERR" : "",
- (status & STS_INT) ? " INT" : ""
- );
-}
-
-static int __maybe_unused
-dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
-{
- return scnprintf (buf, len,
- "%s%sintrenable %02x%s%s%s%s%s%s",
- label, label [0] ? " " : "", enable,
- (enable & STS_IAA) ? " IAA" : "",
- (enable & STS_FATAL) ? " FATAL" : "",
- (enable & STS_FLR) ? " FLR" : "",
- (enable & STS_PCD) ? " PCD" : "",
- (enable & STS_ERR) ? " ERR" : "",
- (enable & STS_INT) ? " INT" : ""
- );
-}
-
-static const char *const fls_strings [] =
- { "1024", "512", "256", "??" };
-
-static int
-dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
-{
- return scnprintf (buf, len,
- "%s%scommand %07x %s=%d ithresh=%d%s%s%s "
- "period=%s%s %s",
- label, label [0] ? " " : "", command,
- (command & CMD_PARK) ? " park" : "(park)",
- CMD_PARK_CNT (command),
- (command >> 16) & 0x3f,
- (command & CMD_IAAD) ? " IAAD" : "",
- (command & CMD_ASE) ? " Async" : "",
- (command & CMD_PSE) ? " Periodic" : "",
- fls_strings [(command >> 2) & 0x3],
- (command & CMD_RESET) ? " Reset" : "",
- (command & CMD_RUN) ? "RUN" : "HALT"
- );
-}
-
-static int
-dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
-{
- char *sig;
-
- /* signaling state */
- switch (status & (3 << 10)) {
- case 0 << 10: sig = "se0"; break;
- case 1 << 10: sig = "k"; break; /* low speed */
- case 2 << 10: sig = "j"; break;
- default: sig = "?"; break;
- }
-
- return scnprintf (buf, len,
- "%s%sport:%d status %06x %d "
- "sig=%s%s%s%s%s%s%s%s",
- label, label [0] ? " " : "", port, status,
- status>>25,/*device address */
- sig,
- (status & PORT_RESET) ? " RESET" : "",
- (status & PORT_SUSPEND) ? " SUSPEND" : "",
- (status & PORT_RESUME) ? " RESUME" : "",
- (status & PORT_PEC) ? " PEC" : "",
- (status & PORT_PE) ? " PE" : "",
- (status & PORT_CSC) ? " CSC" : "",
- (status & PORT_CONNECT) ? " CONNECT" : "");
-}
-
-/* functions have the "wrong" filename when they're output... */
-#define dbg_status(fusbh200, label, status) { \
- char _buf [80]; \
- dbg_status_buf (_buf, sizeof _buf, label, status); \
- fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-#define dbg_cmd(fusbh200, label, command) { \
- char _buf [80]; \
- dbg_command_buf (_buf, sizeof _buf, label, command); \
- fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-#define dbg_port(fusbh200, label, port, status) { \
- char _buf [80]; \
- dbg_port_buf (_buf, sizeof _buf, label, port, status); \
- fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* troubleshooting help: expose state in debugfs */
-
-static int debug_async_open(struct inode *, struct file *);
-static int debug_periodic_open(struct inode *, struct file *);
-static int debug_registers_open(struct inode *, struct file *);
-static int debug_async_open(struct inode *, struct file *);
-
-static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*);
-static int debug_close(struct inode *, struct file *);
-
-static const struct file_operations debug_async_fops = {
- .owner = THIS_MODULE,
- .open = debug_async_open,
- .read = debug_output,
- .release = debug_close,
- .llseek = default_llseek,
-};
-static const struct file_operations debug_periodic_fops = {
- .owner = THIS_MODULE,
- .open = debug_periodic_open,
- .read = debug_output,
- .release = debug_close,
- .llseek = default_llseek,
-};
-static const struct file_operations debug_registers_fops = {
- .owner = THIS_MODULE,
- .open = debug_registers_open,
- .read = debug_output,
- .release = debug_close,
- .llseek = default_llseek,
-};
-
-static struct dentry *fusbh200_debug_root;
-
-struct debug_buffer {
- ssize_t (*fill_func)(struct debug_buffer *); /* fill method */
- struct usb_bus *bus;
- struct mutex mutex; /* protect filling of buffer */
- size_t count; /* number of characters filled into buffer */
- char *output_buf;
- size_t alloc_size;
-};
-
-#define speed_char(info1) ({ char tmp; \
- switch (info1 & (3 << 12)) { \
- case QH_FULL_SPEED: tmp = 'f'; break; \
- case QH_LOW_SPEED: tmp = 'l'; break; \
- case QH_HIGH_SPEED: tmp = 'h'; break; \
- default: tmp = '?'; break; \
- } tmp; })
-
-static inline char token_mark(struct fusbh200_hcd *fusbh200, __hc32 token)
-{
- __u32 v = hc32_to_cpu(fusbh200, token);
-
- if (v & QTD_STS_ACTIVE)
- return '*';
- if (v & QTD_STS_HALT)
- return '-';
- if (!IS_SHORT_READ (v))
- return ' ';
- /* tries to advance through hw_alt_next */
- return '/';
-}
-
-static void qh_lines (
- struct fusbh200_hcd *fusbh200,
- struct fusbh200_qh *qh,
- char **nextp,
- unsigned *sizep
-)
-{
- u32 scratch;
- u32 hw_curr;
- struct fusbh200_qtd *td;
- unsigned temp;
- unsigned size = *sizep;
- char *next = *nextp;
- char mark;
- __le32 list_end = FUSBH200_LIST_END(fusbh200);
- struct fusbh200_qh_hw *hw = qh->hw;
-
- if (hw->hw_qtd_next == list_end) /* NEC does this */
- mark = '@';
- else
- mark = token_mark(fusbh200, hw->hw_token);
- if (mark == '/') { /* qh_alt_next controls qh advance? */
- if ((hw->hw_alt_next & QTD_MASK(fusbh200))
- == fusbh200->async->hw->hw_alt_next)
- mark = '#'; /* blocked */
- else if (hw->hw_alt_next == list_end)
- mark = '.'; /* use hw_qtd_next */
- /* else alt_next points to some other qtd */
- }
- scratch = hc32_to_cpup(fusbh200, &hw->hw_info1);
- hw_curr = (mark == '*') ? hc32_to_cpup(fusbh200, &hw->hw_current) : 0;
- temp = scnprintf (next, size,
- "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
- qh, scratch & 0x007f,
- speed_char (scratch),
- (scratch >> 8) & 0x000f,
- scratch, hc32_to_cpup(fusbh200, &hw->hw_info2),
- hc32_to_cpup(fusbh200, &hw->hw_token), mark,
- (cpu_to_hc32(fusbh200, QTD_TOGGLE) & hw->hw_token)
- ? "data1" : "data0",
- (hc32_to_cpup(fusbh200, &hw->hw_alt_next) >> 1) & 0x0f);
- size -= temp;
- next += temp;
-
- /* hc may be modifying the list as we read it ... */
- list_for_each_entry(td, &qh->qtd_list, qtd_list) {
- scratch = hc32_to_cpup(fusbh200, &td->hw_token);
- mark = ' ';
- if (hw_curr == td->qtd_dma)
- mark = '*';
- else if (hw->hw_qtd_next == cpu_to_hc32(fusbh200, td->qtd_dma))
- mark = '+';
- else if (QTD_LENGTH (scratch)) {
- if (td->hw_alt_next == fusbh200->async->hw->hw_alt_next)
- mark = '#';
- else if (td->hw_alt_next != list_end)
- mark = '/';
- }
- temp = snprintf (next, size,
- "\n\t%p%c%s len=%d %08x urb %p",
- td, mark, ({ char *tmp;
- switch ((scratch>>8)&0x03) {
- case 0: tmp = "out"; break;
- case 1: tmp = "in"; break;
- case 2: tmp = "setup"; break;
- default: tmp = "?"; break;
- } tmp;}),
- (scratch >> 16) & 0x7fff,
- scratch,
- td->urb);
- if (size < temp)
- temp = size;
- size -= temp;
- next += temp;
- if (temp == size)
- goto done;
- }
-
- temp = snprintf (next, size, "\n");
- if (size < temp)
- temp = size;
- size -= temp;
- next += temp;
-
-done:
- *sizep = size;
- *nextp = next;
-}
-
-static ssize_t fill_async_buffer(struct debug_buffer *buf)
-{
- struct usb_hcd *hcd;
- struct fusbh200_hcd *fusbh200;
- unsigned long flags;
- unsigned temp, size;
- char *next;
- struct fusbh200_qh *qh;
-
- hcd = bus_to_hcd(buf->bus);
- fusbh200 = hcd_to_fusbh200 (hcd);
- next = buf->output_buf;
- size = buf->alloc_size;
-
- *next = 0;
-
- /* dumps a snapshot of the async schedule.
- * usually empty except for long-term bulk reads, or head.
- * one QH per line, and TDs we know about
- */
- spin_lock_irqsave (&fusbh200->lock, flags);
- for (qh = fusbh200->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
- qh_lines (fusbh200, qh, &next, &size);
- if (fusbh200->async_unlink && size > 0) {
- temp = scnprintf(next, size, "\nunlink =\n");
- size -= temp;
- next += temp;
-
- for (qh = fusbh200->async_unlink; size > 0 && qh;
- qh = qh->unlink_next)
- qh_lines (fusbh200, qh, &next, &size);
- }
- spin_unlock_irqrestore (&fusbh200->lock, flags);
-
- return strlen(buf->output_buf);
-}
-
-#define DBG_SCHED_LIMIT 64
-static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
-{
- struct usb_hcd *hcd;
- struct fusbh200_hcd *fusbh200;
- unsigned long flags;
- union fusbh200_shadow p, *seen;
- unsigned temp, size, seen_count;
- char *next;
- unsigned i;
- __hc32 tag;
-
- if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
- return 0;
- seen_count = 0;
-
- hcd = bus_to_hcd(buf->bus);
- fusbh200 = hcd_to_fusbh200 (hcd);
- next = buf->output_buf;
- size = buf->alloc_size;
-
- temp = scnprintf (next, size, "size = %d\n", fusbh200->periodic_size);
- size -= temp;
- next += temp;
-
- /* dump a snapshot of the periodic schedule.
- * iso changes, interrupt usually doesn't.
- */
- spin_lock_irqsave (&fusbh200->lock, flags);
- for (i = 0; i < fusbh200->periodic_size; i++) {
- p = fusbh200->pshadow [i];
- if (likely (!p.ptr))
- continue;
- tag = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [i]);
-
- temp = scnprintf (next, size, "%4d: ", i);
- size -= temp;
- next += temp;
-
- do {
- struct fusbh200_qh_hw *hw;
-
- switch (hc32_to_cpu(fusbh200, tag)) {
- case Q_TYPE_QH:
- hw = p.qh->hw;
- temp = scnprintf (next, size, " qh%d-%04x/%p",
- p.qh->period,
- hc32_to_cpup(fusbh200,
- &hw->hw_info2)
- /* uframe masks */
- & (QH_CMASK | QH_SMASK),
- p.qh);
- size -= temp;
- next += temp;
- /* don't repeat what follows this qh */
- for (temp = 0; temp < seen_count; temp++) {
- if (seen [temp].ptr != p.ptr)
- continue;
- if (p.qh->qh_next.ptr) {
- temp = scnprintf (next, size,
- " ...");
- size -= temp;
- next += temp;
- }
- break;
- }
- /* show more info the first time around */
- if (temp == seen_count) {
- u32 scratch = hc32_to_cpup(fusbh200,
- &hw->hw_info1);
- struct fusbh200_qtd *qtd;
- char *type = "";
-
- /* count tds, get ep direction */
- temp = 0;
- list_for_each_entry (qtd,
- &p.qh->qtd_list,
- qtd_list) {
- temp++;
- switch (0x03 & (hc32_to_cpu(
- fusbh200,
- qtd->hw_token) >> 8)) {
- case 0: type = "out"; continue;
- case 1: type = "in"; continue;
- }
- }
-
- temp = scnprintf (next, size,
- " (%c%d ep%d%s "
- "[%d/%d] q%d p%d)",
- speed_char (scratch),
- scratch & 0x007f,
- (scratch >> 8) & 0x000f, type,
- p.qh->usecs, p.qh->c_usecs,
- temp,
- 0x7ff & (scratch >> 16));
-
- if (seen_count < DBG_SCHED_LIMIT)
- seen [seen_count++].qh = p.qh;
- } else
- temp = 0;
- tag = Q_NEXT_TYPE(fusbh200, hw->hw_next);
- p = p.qh->qh_next;
- break;
- case Q_TYPE_FSTN:
- temp = scnprintf (next, size,
- " fstn-%8x/%p", p.fstn->hw_prev,
- p.fstn);
- tag = Q_NEXT_TYPE(fusbh200, p.fstn->hw_next);
- p = p.fstn->fstn_next;
- break;
- case Q_TYPE_ITD:
- temp = scnprintf (next, size,
- " itd/%p", p.itd);
- tag = Q_NEXT_TYPE(fusbh200, p.itd->hw_next);
- p = p.itd->itd_next;
- break;
- }
- size -= temp;
- next += temp;
- } while (p.ptr);
-
- temp = scnprintf (next, size, "\n");
- size -= temp;
- next += temp;
- }
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- kfree (seen);
-
- return buf->alloc_size - size;
-}
-#undef DBG_SCHED_LIMIT
-
-static const char *rh_state_string(struct fusbh200_hcd *fusbh200)
-{
- switch (fusbh200->rh_state) {
- case FUSBH200_RH_HALTED:
- return "halted";
- case FUSBH200_RH_SUSPENDED:
- return "suspended";
- case FUSBH200_RH_RUNNING:
- return "running";
- case FUSBH200_RH_STOPPING:
- return "stopping";
- }
- return "?";
-}
-
-static ssize_t fill_registers_buffer(struct debug_buffer *buf)
-{
- struct usb_hcd *hcd;
- struct fusbh200_hcd *fusbh200;
- unsigned long flags;
- unsigned temp, size, i;
- char *next, scratch [80];
- static char fmt [] = "%*s\n";
- static char label [] = "";
-
- hcd = bus_to_hcd(buf->bus);
- fusbh200 = hcd_to_fusbh200 (hcd);
- next = buf->output_buf;
- size = buf->alloc_size;
-
- spin_lock_irqsave (&fusbh200->lock, flags);
-
- if (!HCD_HW_ACCESSIBLE(hcd)) {
- size = scnprintf (next, size,
- "bus %s, device %s\n"
- "%s\n"
- "SUSPENDED (no register access)\n",
- hcd->self.controller->bus->name,
- dev_name(hcd->self.controller),
- hcd->product_desc);
- goto done;
- }
-
- /* Capability Registers */
- i = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
- temp = scnprintf (next, size,
- "bus %s, device %s\n"
- "%s\n"
- "EHCI %x.%02x, rh state %s\n",
- hcd->self.controller->bus->name,
- dev_name(hcd->self.controller),
- hcd->product_desc,
- i >> 8, i & 0x0ff, rh_state_string(fusbh200));
- size -= temp;
- next += temp;
-
- // FIXME interpret both types of params
- i = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
- temp = scnprintf (next, size, "structural params 0x%08x\n", i);
- size -= temp;
- next += temp;
-
- i = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
- temp = scnprintf (next, size, "capability params 0x%08x\n", i);
- size -= temp;
- next += temp;
-
- /* Operational Registers */
- temp = dbg_status_buf (scratch, sizeof scratch, label,
- fusbh200_readl(fusbh200, &fusbh200->regs->status));
- temp = scnprintf (next, size, fmt, temp, scratch);
- size -= temp;
- next += temp;
-
- temp = dbg_command_buf (scratch, sizeof scratch, label,
- fusbh200_readl(fusbh200, &fusbh200->regs->command));
- temp = scnprintf (next, size, fmt, temp, scratch);
- size -= temp;
- next += temp;
-
- temp = dbg_intr_buf (scratch, sizeof scratch, label,
- fusbh200_readl(fusbh200, &fusbh200->regs->intr_enable));
- temp = scnprintf (next, size, fmt, temp, scratch);
- size -= temp;
- next += temp;
-
- temp = scnprintf (next, size, "uframe %04x\n",
- fusbh200_read_frame_index(fusbh200));
- size -= temp;
- next += temp;
-
- if (fusbh200->async_unlink) {
- temp = scnprintf(next, size, "async unlink qh %p\n",
- fusbh200->async_unlink);
- size -= temp;
- next += temp;
- }
-
- temp = scnprintf (next, size,
- "irq normal %ld err %ld iaa %ld (lost %ld)\n",
- fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa,
- fusbh200->stats.lost_iaa);
- size -= temp;
- next += temp;
-
- temp = scnprintf (next, size, "complete %ld unlink %ld\n",
- fusbh200->stats.complete, fusbh200->stats.unlink);
- size -= temp;
- next += temp;
-
-done:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
-
- return buf->alloc_size - size;
-}
-
-static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
- ssize_t (*fill_func)(struct debug_buffer *))
-{
- struct debug_buffer *buf;
-
- buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL);
-
- if (buf) {
- buf->bus = bus;
- buf->fill_func = fill_func;
- mutex_init(&buf->mutex);
- buf->alloc_size = PAGE_SIZE;
- }
-
- return buf;
-}
-
-static int fill_buffer(struct debug_buffer *buf)
-{
- int ret = 0;
-
- if (!buf->output_buf)
- buf->output_buf = vmalloc(buf->alloc_size);
-
- if (!buf->output_buf) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = buf->fill_func(buf);
-
- if (ret >= 0) {
- buf->count = ret;
- ret = 0;
- }
-
-out:
- return ret;
-}
-
-static ssize_t debug_output(struct file *file, char __user *user_buf,
- size_t len, loff_t *offset)
-{
- struct debug_buffer *buf = file->private_data;
- int ret = 0;
-
- mutex_lock(&buf->mutex);
- if (buf->count == 0) {
- ret = fill_buffer(buf);
- if (ret != 0) {
- mutex_unlock(&buf->mutex);
- goto out;
- }
- }
- mutex_unlock(&buf->mutex);
-
- ret = simple_read_from_buffer(user_buf, len, offset,
- buf->output_buf, buf->count);
-
-out:
- return ret;
-
-}
-
-static int debug_close(struct inode *inode, struct file *file)
-{
- struct debug_buffer *buf = file->private_data;
-
- if (buf) {
- vfree(buf->output_buf);
- kfree(buf);
- }
-
- return 0;
-}
-static int debug_async_open(struct inode *inode, struct file *file)
-{
- file->private_data = alloc_buffer(inode->i_private, fill_async_buffer);
-
- return file->private_data ? 0 : -ENOMEM;
-}
-
-static int debug_periodic_open(struct inode *inode, struct file *file)
-{
- struct debug_buffer *buf;
- buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
- if (!buf)
- return -ENOMEM;
-
- buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE;
- file->private_data = buf;
- return 0;
-}
-
-static int debug_registers_open(struct inode *inode, struct file *file)
-{
- file->private_data = alloc_buffer(inode->i_private,
- fill_registers_buffer);
-
- return file->private_data ? 0 : -ENOMEM;
-}
-
-static inline void create_debug_files (struct fusbh200_hcd *fusbh200)
-{
- struct usb_bus *bus = &fusbh200_to_hcd(fusbh200)->self;
-
- fusbh200->debug_dir = debugfs_create_dir(bus->bus_name, fusbh200_debug_root);
- if (!fusbh200->debug_dir)
- return;
-
- if (!debugfs_create_file("async", S_IRUGO, fusbh200->debug_dir, bus,
- &debug_async_fops))
- goto file_error;
-
- if (!debugfs_create_file("periodic", S_IRUGO, fusbh200->debug_dir, bus,
- &debug_periodic_fops))
- goto file_error;
-
- if (!debugfs_create_file("registers", S_IRUGO, fusbh200->debug_dir, bus,
- &debug_registers_fops))
- goto file_error;
-
- return;
-
-file_error:
- debugfs_remove_recursive(fusbh200->debug_dir);
-}
-
-static inline void remove_debug_files (struct fusbh200_hcd *fusbh200)
-{
- debugfs_remove_recursive(fusbh200->debug_dir);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * handshake - spin reading hc until handshake completes or fails
- * @ptr: address of hc register to be read
- * @mask: bits to look at in result of read
- * @done: value of those bits when handshake succeeds
- * @usec: timeout in microseconds
- *
- * Returns negative errno, or zero on success
- *
- * Success happens when the "mask" bits have the specified value (hardware
- * handshake done). There are two failure modes: "usec" have passed (major
- * hardware flakeout), or the register reads as all-ones (hardware removed).
- *
- * That last failure should_only happen in cases like physical cardbus eject
- * before driver shutdown. But it also seems to be caused by bugs in cardbus
- * bridge shutdown: shutting down the bridge before the devices using it.
- */
-static int handshake (struct fusbh200_hcd *fusbh200, void __iomem *ptr,
- u32 mask, u32 done, int usec)
-{
- u32 result;
-
- do {
- result = fusbh200_readl(fusbh200, ptr);
- if (result == ~(u32)0) /* card removed */
- return -ENODEV;
- result &= mask;
- if (result == done)
- return 0;
- udelay (1);
- usec--;
- } while (usec > 0);
- return -ETIMEDOUT;
-}
-
-/*
- * Force HC to halt state from unknown (EHCI spec section 2.3).
- * Must be called with interrupts enabled and the lock not held.
- */
-static int fusbh200_halt (struct fusbh200_hcd *fusbh200)
-{
- u32 temp;
-
- spin_lock_irq(&fusbh200->lock);
-
- /* disable any irqs left enabled by previous code */
- fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
-
- /*
- * This routine gets called during probe before fusbh200->command
- * has been initialized, so we can't rely on its value.
- */
- fusbh200->command &= ~CMD_RUN;
- temp = fusbh200_readl(fusbh200, &fusbh200->regs->command);
- temp &= ~(CMD_RUN | CMD_IAAD);
- fusbh200_writel(fusbh200, temp, &fusbh200->regs->command);
-
- spin_unlock_irq(&fusbh200->lock);
- synchronize_irq(fusbh200_to_hcd(fusbh200)->irq);
-
- return handshake(fusbh200, &fusbh200->regs->status,
- STS_HALT, STS_HALT, 16 * 125);
-}
-
-/*
- * Reset a non-running (STS_HALT == 1) controller.
- * Must be called with interrupts enabled and the lock not held.
- */
-static int fusbh200_reset (struct fusbh200_hcd *fusbh200)
-{
- int retval;
- u32 command = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-
- /* If the EHCI debug controller is active, special care must be
- * taken before and after a host controller reset */
- if (fusbh200->debug && !dbgp_reset_prep(fusbh200_to_hcd(fusbh200)))
- fusbh200->debug = NULL;
-
- command |= CMD_RESET;
- dbg_cmd (fusbh200, "reset", command);
- fusbh200_writel(fusbh200, command, &fusbh200->regs->command);
- fusbh200->rh_state = FUSBH200_RH_HALTED;
- fusbh200->next_statechange = jiffies;
- retval = handshake (fusbh200, &fusbh200->regs->command,
- CMD_RESET, 0, 250 * 1000);
-
- if (retval)
- return retval;
-
- if (fusbh200->debug)
- dbgp_external_startup(fusbh200_to_hcd(fusbh200));
-
- fusbh200->port_c_suspend = fusbh200->suspended_ports =
- fusbh200->resuming_ports = 0;
- return retval;
-}
-
-/*
- * Idle the controller (turn off the schedules).
- * Must be called with interrupts enabled and the lock not held.
- */
-static void fusbh200_quiesce (struct fusbh200_hcd *fusbh200)
-{
- u32 temp;
-
- if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
- return;
-
- /* wait for any schedule enables/disables to take effect */
- temp = (fusbh200->command << 10) & (STS_ASS | STS_PSS);
- handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, temp, 16 * 125);
-
- /* then disable anything that's still active */
- spin_lock_irq(&fusbh200->lock);
- fusbh200->command &= ~(CMD_ASE | CMD_PSE);
- fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
- spin_unlock_irq(&fusbh200->lock);
-
- /* hardware can take 16 microframes to turn off ... */
- handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, 0, 16 * 125);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void end_unlink_async(struct fusbh200_hcd *fusbh200);
-static void unlink_empty_async(struct fusbh200_hcd *fusbh200);
-static void fusbh200_work(struct fusbh200_hcd *fusbh200);
-static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-/*-------------------------------------------------------------------------*/
-
-/* Set a bit in the USBCMD register */
-static void fusbh200_set_command_bit(struct fusbh200_hcd *fusbh200, u32 bit)
-{
- fusbh200->command |= bit;
- fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-
- /* unblock posted write */
- fusbh200_readl(fusbh200, &fusbh200->regs->command);
-}
-
-/* Clear a bit in the USBCMD register */
-static void fusbh200_clear_command_bit(struct fusbh200_hcd *fusbh200, u32 bit)
-{
- fusbh200->command &= ~bit;
- fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-
- /* unblock posted write */
- fusbh200_readl(fusbh200, &fusbh200->regs->command);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI timer support... Now using hrtimers.
- *
- * Lots of different events are triggered from fusbh200->hrtimer. Whenever
- * the timer routine runs, it checks each possible event; events that are
- * currently enabled and whose expiration time has passed get handled.
- * The set of enabled events is stored as a collection of bitflags in
- * fusbh200->enabled_hrtimer_events, and they are numbered in order of
- * increasing delay values (ranging between 1 ms and 100 ms).
- *
- * Rather than implementing a sorted list or tree of all pending events,
- * we keep track only of the lowest-numbered pending event, in
- * fusbh200->next_hrtimer_event. Whenever fusbh200->hrtimer gets restarted, its
- * expiration time is set to the timeout value for this event.
- *
- * As a result, events might not get handled right away; the actual delay
- * could be anywhere up to twice the requested delay. This doesn't
- * matter, because none of the events are especially time-critical. The
- * ones that matter most all have a delay of 1 ms, so they will be
- * handled after 2 ms at most, which is okay. In addition to this, we
- * allow for an expiration range of 1 ms.
- */
-
-/*
- * Delay lengths for the hrtimer event types.
- * Keep this list sorted by delay length, in the same order as
- * the event types indexed by enum fusbh200_hrtimer_event in fusbh200.h.
- */
-static unsigned event_delays_ns[] = {
- 1 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_POLL_ASS */
- 1 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_POLL_PSS */
- 1 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_POLL_DEAD */
- 1125 * NSEC_PER_USEC, /* FUSBH200_HRTIMER_UNLINK_INTR */
- 2 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_FREE_ITDS */
- 6 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_ASYNC_UNLINKS */
- 10 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_IAA_WATCHDOG */
- 10 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_DISABLE_PERIODIC */
- 15 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_DISABLE_ASYNC */
- 100 * NSEC_PER_MSEC, /* FUSBH200_HRTIMER_IO_WATCHDOG */
-};
-
-/* Enable a pending hrtimer event */
-static void fusbh200_enable_event(struct fusbh200_hcd *fusbh200, unsigned event,
- bool resched)
-{
- ktime_t *timeout = &fusbh200->hr_timeouts[event];
-
- if (resched)
- *timeout = ktime_add(ktime_get(),
- ktime_set(0, event_delays_ns[event]));
- fusbh200->enabled_hrtimer_events |= (1 << event);
-
- /* Track only the lowest-numbered pending event */
- if (event < fusbh200->next_hrtimer_event) {
- fusbh200->next_hrtimer_event = event;
- hrtimer_start_range_ns(&fusbh200->hrtimer, *timeout,
- NSEC_PER_MSEC, HRTIMER_MODE_ABS);
- }
-}
-
-
-/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */
-static void fusbh200_poll_ASS(struct fusbh200_hcd *fusbh200)
-{
- unsigned actual, want;
-
- /* Don't enable anything if the controller isn't running (e.g., died) */
- if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
- return;
-
- want = (fusbh200->command & CMD_ASE) ? STS_ASS : 0;
- actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_ASS;
-
- if (want != actual) {
-
- /* Poll again later, but give up after about 20 ms */
- if (fusbh200->ASS_poll_count++ < 20) {
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_ASS, true);
- return;
- }
- fusbh200_dbg(fusbh200, "Waited too long for the async schedule status (%x/%x), giving up\n",
- want, actual);
- }
- fusbh200->ASS_poll_count = 0;
-
- /* The status is up-to-date; restart or stop the schedule as needed */
- if (want == 0) { /* Stopped */
- if (fusbh200->async_count > 0)
- fusbh200_set_command_bit(fusbh200, CMD_ASE);
-
- } else { /* Running */
- if (fusbh200->async_count == 0) {
-
- /* Turn off the schedule after a while */
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_ASYNC,
- true);
- }
- }
-}
-
-/* Turn off the async schedule after a brief delay */
-static void fusbh200_disable_ASE(struct fusbh200_hcd *fusbh200)
-{
- fusbh200_clear_command_bit(fusbh200, CMD_ASE);
-}
-
-
-/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */
-static void fusbh200_poll_PSS(struct fusbh200_hcd *fusbh200)
-{
- unsigned actual, want;
-
- /* Don't do anything if the controller isn't running (e.g., died) */
- if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
- return;
-
- want = (fusbh200->command & CMD_PSE) ? STS_PSS : 0;
- actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_PSS;
-
- if (want != actual) {
-
- /* Poll again later, but give up after about 20 ms */
- if (fusbh200->PSS_poll_count++ < 20) {
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_PSS, true);
- return;
- }
- fusbh200_dbg(fusbh200, "Waited too long for the periodic schedule status (%x/%x), giving up\n",
- want, actual);
- }
- fusbh200->PSS_poll_count = 0;
-
- /* The status is up-to-date; restart or stop the schedule as needed */
- if (want == 0) { /* Stopped */
- if (fusbh200->periodic_count > 0)
- fusbh200_set_command_bit(fusbh200, CMD_PSE);
-
- } else { /* Running */
- if (fusbh200->periodic_count == 0) {
-
- /* Turn off the schedule after a while */
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_PERIODIC,
- true);
- }
- }
-}
-
-/* Turn off the periodic schedule after a brief delay */
-static void fusbh200_disable_PSE(struct fusbh200_hcd *fusbh200)
-{
- fusbh200_clear_command_bit(fusbh200, CMD_PSE);
-}
-
-
-/* Poll the STS_HALT status bit; see when a dead controller stops */
-static void fusbh200_handle_controller_death(struct fusbh200_hcd *fusbh200)
-{
- if (!(fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_HALT)) {
-
- /* Give up after a few milliseconds */
- if (fusbh200->died_poll_count++ < 5) {
- /* Try again later */
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_DEAD, true);
- return;
- }
- fusbh200_warn(fusbh200, "Waited too long for the controller to stop, giving up\n");
- }
-
- /* Clean up the mess */
- fusbh200->rh_state = FUSBH200_RH_HALTED;
- fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
- fusbh200_work(fusbh200);
- end_unlink_async(fusbh200);
-
- /* Not in process context, so don't try to reset the controller */
-}
-
-
-/* Handle unlinked interrupt QHs once they are gone from the hardware */
-static void fusbh200_handle_intr_unlinks(struct fusbh200_hcd *fusbh200)
-{
- bool stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING);
-
- /*
- * Process all the QHs on the intr_unlink list that were added
- * before the current unlink cycle began. The list is in
- * temporal order, so stop when we reach the first entry in the
- * current cycle. But if the root hub isn't running then
- * process all the QHs on the list.
- */
- fusbh200->intr_unlinking = true;
- while (fusbh200->intr_unlink) {
- struct fusbh200_qh *qh = fusbh200->intr_unlink;
-
- if (!stopped && qh->unlink_cycle == fusbh200->intr_unlink_cycle)
- break;
- fusbh200->intr_unlink = qh->unlink_next;
- qh->unlink_next = NULL;
- end_unlink_intr(fusbh200, qh);
- }
-
- /* Handle remaining entries later */
- if (fusbh200->intr_unlink) {
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true);
- ++fusbh200->intr_unlink_cycle;
- }
- fusbh200->intr_unlinking = false;
-}
-
-
-/* Start another free-iTDs/siTDs cycle */
-static void start_free_itds(struct fusbh200_hcd *fusbh200)
-{
- if (!(fusbh200->enabled_hrtimer_events & BIT(FUSBH200_HRTIMER_FREE_ITDS))) {
- fusbh200->last_itd_to_free = list_entry(
- fusbh200->cached_itd_list.prev,
- struct fusbh200_itd, itd_list);
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_FREE_ITDS, true);
- }
-}
-
-/* Wait for controller to stop using old iTDs and siTDs */
-static void end_free_itds(struct fusbh200_hcd *fusbh200)
-{
- struct fusbh200_itd *itd, *n;
-
- if (fusbh200->rh_state < FUSBH200_RH_RUNNING) {
- fusbh200->last_itd_to_free = NULL;
- }
-
- list_for_each_entry_safe(itd, n, &fusbh200->cached_itd_list, itd_list) {
- list_del(&itd->itd_list);
- dma_pool_free(fusbh200->itd_pool, itd, itd->itd_dma);
- if (itd == fusbh200->last_itd_to_free)
- break;
- }
-
- if (!list_empty(&fusbh200->cached_itd_list))
- start_free_itds(fusbh200);
-}
-
-
-/* Handle lost (or very late) IAA interrupts */
-static void fusbh200_iaa_watchdog(struct fusbh200_hcd *fusbh200)
-{
- if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
- return;
-
- /*
- * Lost IAA irqs wedge things badly; seen first with a vt8235.
- * So we need this watchdog, but must protect it against both
- * (a) SMP races against real IAA firing and retriggering, and
- * (b) clean HC shutdown, when IAA watchdog was pending.
- */
- if (fusbh200->async_iaa) {
- u32 cmd, status;
-
- /* If we get here, IAA is *REALLY* late. It's barely
- * conceivable that the system is so busy that CMD_IAAD
- * is still legitimately set, so let's be sure it's
- * clear before we read STS_IAA. (The HC should clear
- * CMD_IAAD when it sets STS_IAA.)
- */
- cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-
- /*
- * If IAA is set here it either legitimately triggered
- * after the watchdog timer expired (_way_ late, so we'll
- * still count it as lost) ... or a silicon erratum:
- * - VIA seems to set IAA without triggering the IRQ;
- * - IAAD potentially cleared without setting IAA.
- */
- status = fusbh200_readl(fusbh200, &fusbh200->regs->status);
- if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
- COUNT(fusbh200->stats.lost_iaa);
- fusbh200_writel(fusbh200, STS_IAA, &fusbh200->regs->status);
- }
-
- fusbh200_dbg(fusbh200, "IAA watchdog: status %x cmd %x\n",
- status, cmd);
- end_unlink_async(fusbh200);
- }
-}
-
-
-/* Enable the I/O watchdog, if appropriate */
-static void turn_on_io_watchdog(struct fusbh200_hcd *fusbh200)
-{
- /* Not needed if the controller isn't running or it's already enabled */
- if (fusbh200->rh_state != FUSBH200_RH_RUNNING ||
- (fusbh200->enabled_hrtimer_events &
- BIT(FUSBH200_HRTIMER_IO_WATCHDOG)))
- return;
-
- /*
- * Isochronous transfers always need the watchdog.
- * For other sorts we use it only if the flag is set.
- */
- if (fusbh200->isoc_count > 0 || (fusbh200->need_io_watchdog &&
- fusbh200->async_count + fusbh200->intr_count > 0))
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IO_WATCHDOG, true);
-}
-
-
-/*
- * Handler functions for the hrtimer event types.
- * Keep this array in the same order as the event types indexed by
- * enum fusbh200_hrtimer_event in fusbh200.h.
- */
-static void (*event_handlers[])(struct fusbh200_hcd *) = {
- fusbh200_poll_ASS, /* FUSBH200_HRTIMER_POLL_ASS */
- fusbh200_poll_PSS, /* FUSBH200_HRTIMER_POLL_PSS */
- fusbh200_handle_controller_death, /* FUSBH200_HRTIMER_POLL_DEAD */
- fusbh200_handle_intr_unlinks, /* FUSBH200_HRTIMER_UNLINK_INTR */
- end_free_itds, /* FUSBH200_HRTIMER_FREE_ITDS */
- unlink_empty_async, /* FUSBH200_HRTIMER_ASYNC_UNLINKS */
- fusbh200_iaa_watchdog, /* FUSBH200_HRTIMER_IAA_WATCHDOG */
- fusbh200_disable_PSE, /* FUSBH200_HRTIMER_DISABLE_PERIODIC */
- fusbh200_disable_ASE, /* FUSBH200_HRTIMER_DISABLE_ASYNC */
- fusbh200_work, /* FUSBH200_HRTIMER_IO_WATCHDOG */
-};
-
-static enum hrtimer_restart fusbh200_hrtimer_func(struct hrtimer *t)
-{
- struct fusbh200_hcd *fusbh200 = container_of(t, struct fusbh200_hcd, hrtimer);
- ktime_t now;
- unsigned long events;
- unsigned long flags;
- unsigned e;
-
- spin_lock_irqsave(&fusbh200->lock, flags);
-
- events = fusbh200->enabled_hrtimer_events;
- fusbh200->enabled_hrtimer_events = 0;
- fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT;
-
- /*
- * Check each pending event. If its time has expired, handle
- * the event; otherwise re-enable it.
- */
- now = ktime_get();
- for_each_set_bit(e, &events, FUSBH200_HRTIMER_NUM_EVENTS) {
- if (now.tv64 >= fusbh200->hr_timeouts[e].tv64)
- event_handlers[e](fusbh200);
- else
- fusbh200_enable_event(fusbh200, e, false);
- }
-
- spin_unlock_irqrestore(&fusbh200->lock, flags);
- return HRTIMER_NORESTART;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define fusbh200_bus_suspend NULL
-#define fusbh200_bus_resume NULL
-
-/*-------------------------------------------------------------------------*/
-
-static int check_reset_complete (
- struct fusbh200_hcd *fusbh200,
- int index,
- u32 __iomem *status_reg,
- int port_status
-) {
- if (!(port_status & PORT_CONNECT))
- return port_status;
-
- /* if reset finished and it's still not enabled -- handoff */
- if (!(port_status & PORT_PE)) {
- /* with integrated TT, there's nobody to hand it to! */
- fusbh200_dbg (fusbh200,
- "Failed to enable port %d on root hub TT\n",
- index+1);
- return port_status;
- } else {
- fusbh200_dbg(fusbh200, "port %d reset complete, port enabled\n",
- index + 1);
- }
-
- return port_status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-
-/* build "status change" packet (one or two bytes) from HC registers */
-
-static int
-fusbh200_hub_status_data (struct usb_hcd *hcd, char *buf)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- u32 temp, status;
- u32 mask;
- int retval = 1;
- unsigned long flags;
-
- /* init status to no-changes */
- buf [0] = 0;
-
- /* Inform the core about resumes-in-progress by returning
- * a non-zero value even if there are no status changes.
- */
- status = fusbh200->resuming_ports;
-
- mask = PORT_CSC | PORT_PEC;
- // PORT_RESUME from hardware ~= PORT_STAT_C_SUSPEND
-
- /* no hub change reports (bit 0) for now (power, ...) */
-
- /* port N changes (bit N)? */
- spin_lock_irqsave (&fusbh200->lock, flags);
-
- temp = fusbh200_readl(fusbh200, &fusbh200->regs->port_status);
-
- /*
- * Return status information even for ports with OWNER set.
- * Otherwise hub_wq wouldn't see the disconnect event when a
- * high-speed device is switched over to the companion
- * controller by the user.
- */
-
- if ((temp & mask) != 0 || test_bit(0, &fusbh200->port_c_suspend)
- || (fusbh200->reset_done[0] && time_after_eq(
- jiffies, fusbh200->reset_done[0]))) {
- buf [0] |= 1 << 1;
- status = STS_PCD;
- }
- /* FIXME autosuspend idle root hubs */
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- return status ? retval : 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void
-fusbh200_hub_descriptor (
- struct fusbh200_hcd *fusbh200,
- struct usb_hub_descriptor *desc
-) {
- int ports = HCS_N_PORTS (fusbh200->hcs_params);
- u16 temp;
-
- desc->bDescriptorType = USB_DT_HUB;
- desc->bPwrOn2PwrGood = 10; /* fusbh200 1.0, 2.3.9 says 20ms max */
- desc->bHubContrCurrent = 0;
-
- desc->bNbrPorts = ports;
- temp = 1 + (ports / 8);
- desc->bDescLength = 7 + 2 * temp;
-
- /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */
- memset(&desc->u.hs.DeviceRemovable[0], 0, temp);
- memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp);
-
- temp = HUB_CHAR_INDV_PORT_OCPM; /* per-port overcurrent reporting */
- temp |= HUB_CHAR_NO_LPSM; /* no power switching */
- desc->wHubCharacteristics = cpu_to_le16(temp);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int fusbh200_hub_control (
- struct usb_hcd *hcd,
- u16 typeReq,
- u16 wValue,
- u16 wIndex,
- char *buf,
- u16 wLength
-) {
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- int ports = HCS_N_PORTS (fusbh200->hcs_params);
- u32 __iomem *status_reg = &fusbh200->regs->port_status;
- u32 temp, temp1, status;
- unsigned long flags;
- int retval = 0;
- unsigned selector;
-
- /*
- * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR.
- * HCS_INDICATOR may say we can change LEDs to off/amber/green.
- * (track current state ourselves) ... blink for diagnostics,
- * power, "this is the one", etc. EHCI spec supports this.
- */
-
- spin_lock_irqsave (&fusbh200->lock, flags);
- switch (typeReq) {
- case ClearHubFeature:
- switch (wValue) {
- case C_HUB_LOCAL_POWER:
- case C_HUB_OVER_CURRENT:
- /* no hub-wide feature/status flags */
- break;
- default:
- goto error;
- }
- break;
- case ClearPortFeature:
- if (!wIndex || wIndex > ports)
- goto error;
- wIndex--;
- temp = fusbh200_readl(fusbh200, status_reg);
- temp &= ~PORT_RWC_BITS;
-
- /*
- * Even if OWNER is set, so the port is owned by the
- * companion controller, hub_wq needs to be able to clear
- * the port-change status bits (especially
- * USB_PORT_STAT_C_CONNECTION).
- */
-
- switch (wValue) {
- case USB_PORT_FEAT_ENABLE:
- fusbh200_writel(fusbh200, temp & ~PORT_PE, status_reg);
- break;
- case USB_PORT_FEAT_C_ENABLE:
- fusbh200_writel(fusbh200, temp | PORT_PEC, status_reg);
- break;
- case USB_PORT_FEAT_SUSPEND:
- if (temp & PORT_RESET)
- goto error;
- if (!(temp & PORT_SUSPEND))
- break;
- if ((temp & PORT_PE) == 0)
- goto error;
-
- fusbh200_writel(fusbh200, temp | PORT_RESUME, status_reg);
- fusbh200->reset_done[wIndex] = jiffies
- + msecs_to_jiffies(USB_RESUME_TIMEOUT);
- break;
- case USB_PORT_FEAT_C_SUSPEND:
- clear_bit(wIndex, &fusbh200->port_c_suspend);
- break;
- case USB_PORT_FEAT_C_CONNECTION:
- fusbh200_writel(fusbh200, temp | PORT_CSC, status_reg);
- break;
- case USB_PORT_FEAT_C_OVER_CURRENT:
- fusbh200_writel(fusbh200, temp | BMISR_OVC, &fusbh200->regs->bmisr);
- break;
- case USB_PORT_FEAT_C_RESET:
- /* GetPortStatus clears reset */
- break;
- default:
- goto error;
- }
- fusbh200_readl(fusbh200, &fusbh200->regs->command); /* unblock posted write */
- break;
- case GetHubDescriptor:
- fusbh200_hub_descriptor (fusbh200, (struct usb_hub_descriptor *)
- buf);
- break;
- case GetHubStatus:
- /* no hub-wide feature/status flags */
- memset (buf, 0, 4);
- //cpu_to_le32s ((u32 *) buf);
- break;
- case GetPortStatus:
- if (!wIndex || wIndex > ports)
- goto error;
- wIndex--;
- status = 0;
- temp = fusbh200_readl(fusbh200, status_reg);
-
- // wPortChange bits
- if (temp & PORT_CSC)
- status |= USB_PORT_STAT_C_CONNECTION << 16;
- if (temp & PORT_PEC)
- status |= USB_PORT_STAT_C_ENABLE << 16;
-
- temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr);
- if (temp1 & BMISR_OVC)
- status |= USB_PORT_STAT_C_OVERCURRENT << 16;
-
- /* whoever resumes must GetPortStatus to complete it!! */
- if (temp & PORT_RESUME) {
-
- /* Remote Wakeup received? */
- if (!fusbh200->reset_done[wIndex]) {
- /* resume signaling for 20 msec */
- fusbh200->reset_done[wIndex] = jiffies
- + msecs_to_jiffies(20);
- /* check the port again */
- mod_timer(&fusbh200_to_hcd(fusbh200)->rh_timer,
- fusbh200->reset_done[wIndex]);
- }
-
- /* resume completed? */
- else if (time_after_eq(jiffies,
- fusbh200->reset_done[wIndex])) {
- clear_bit(wIndex, &fusbh200->suspended_ports);
- set_bit(wIndex, &fusbh200->port_c_suspend);
- fusbh200->reset_done[wIndex] = 0;
-
- /* stop resume signaling */
- temp = fusbh200_readl(fusbh200, status_reg);
- fusbh200_writel(fusbh200,
- temp & ~(PORT_RWC_BITS | PORT_RESUME),
- status_reg);
- clear_bit(wIndex, &fusbh200->resuming_ports);
- retval = handshake(fusbh200, status_reg,
- PORT_RESUME, 0, 2000 /* 2msec */);
- if (retval != 0) {
- fusbh200_err(fusbh200,
- "port %d resume error %d\n",
- wIndex + 1, retval);
- goto error;
- }
- temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
- }
- }
-
- /* whoever resets must GetPortStatus to complete it!! */
- if ((temp & PORT_RESET)
- && time_after_eq(jiffies,
- fusbh200->reset_done[wIndex])) {
- status |= USB_PORT_STAT_C_RESET << 16;
- fusbh200->reset_done [wIndex] = 0;
- clear_bit(wIndex, &fusbh200->resuming_ports);
-
- /* force reset to complete */
- fusbh200_writel(fusbh200, temp & ~(PORT_RWC_BITS | PORT_RESET),
- status_reg);
- /* REVISIT: some hardware needs 550+ usec to clear
- * this bit; seems too long to spin routinely...
- */
- retval = handshake(fusbh200, status_reg,
- PORT_RESET, 0, 1000);
- if (retval != 0) {
- fusbh200_err (fusbh200, "port %d reset error %d\n",
- wIndex + 1, retval);
- goto error;
- }
-
- /* see what we found out */
- temp = check_reset_complete (fusbh200, wIndex, status_reg,
- fusbh200_readl(fusbh200, status_reg));
- }
-
- if (!(temp & (PORT_RESUME|PORT_RESET))) {
- fusbh200->reset_done[wIndex] = 0;
- clear_bit(wIndex, &fusbh200->resuming_ports);
- }
-
- /* transfer dedicated ports to the companion hc */
- if ((temp & PORT_CONNECT) &&
- test_bit(wIndex, &fusbh200->companion_ports)) {
- temp &= ~PORT_RWC_BITS;
- fusbh200_writel(fusbh200, temp, status_reg);
- fusbh200_dbg(fusbh200, "port %d --> companion\n", wIndex + 1);
- temp = fusbh200_readl(fusbh200, status_reg);
- }
-
- /*
- * Even if OWNER is set, there's no harm letting hub_wq
- * see the wPortStatus values (they should all be 0 except
- * for PORT_POWER anyway).
- */
-
- if (temp & PORT_CONNECT) {
- status |= USB_PORT_STAT_CONNECTION;
- status |= fusbh200_port_speed(fusbh200, temp);
- }
- if (temp & PORT_PE)
- status |= USB_PORT_STAT_ENABLE;
-
- /* maybe the port was unsuspended without our knowledge */
- if (temp & (PORT_SUSPEND|PORT_RESUME)) {
- status |= USB_PORT_STAT_SUSPEND;
- } else if (test_bit(wIndex, &fusbh200->suspended_ports)) {
- clear_bit(wIndex, &fusbh200->suspended_ports);
- clear_bit(wIndex, &fusbh200->resuming_ports);
- fusbh200->reset_done[wIndex] = 0;
- if (temp & PORT_PE)
- set_bit(wIndex, &fusbh200->port_c_suspend);
- }
-
- temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr);
- if (temp1 & BMISR_OVC)
- status |= USB_PORT_STAT_OVERCURRENT;
- if (temp & PORT_RESET)
- status |= USB_PORT_STAT_RESET;
- if (test_bit(wIndex, &fusbh200->port_c_suspend))
- status |= USB_PORT_STAT_C_SUSPEND << 16;
-
- if (status & ~0xffff) /* only if wPortChange is interesting */
- dbg_port(fusbh200, "GetStatus", wIndex + 1, temp);
- put_unaligned_le32(status, buf);
- break;
- case SetHubFeature:
- switch (wValue) {
- case C_HUB_LOCAL_POWER:
- case C_HUB_OVER_CURRENT:
- /* no hub-wide feature/status flags */
- break;
- default:
- goto error;
- }
- break;
- case SetPortFeature:
- selector = wIndex >> 8;
- wIndex &= 0xff;
-
- if (!wIndex || wIndex > ports)
- goto error;
- wIndex--;
- temp = fusbh200_readl(fusbh200, status_reg);
- temp &= ~PORT_RWC_BITS;
- switch (wValue) {
- case USB_PORT_FEAT_SUSPEND:
- if ((temp & PORT_PE) == 0
- || (temp & PORT_RESET) != 0)
- goto error;
-
- /* After above check the port must be connected.
- * Set appropriate bit thus could put phy into low power
- * mode if we have hostpc feature
- */
- fusbh200_writel(fusbh200, temp | PORT_SUSPEND, status_reg);
- set_bit(wIndex, &fusbh200->suspended_ports);
- break;
- case USB_PORT_FEAT_RESET:
- if (temp & PORT_RESUME)
- goto error;
- /* line status bits may report this as low speed,
- * which can be fine if this root hub has a
- * transaction translator built in.
- */
- fusbh200_dbg(fusbh200, "port %d reset\n", wIndex + 1);
- temp |= PORT_RESET;
- temp &= ~PORT_PE;
-
- /*
- * caller must wait, then call GetPortStatus
- * usb 2.0 spec says 50 ms resets on root
- */
- fusbh200->reset_done [wIndex] = jiffies
- + msecs_to_jiffies (50);
- fusbh200_writel(fusbh200, temp, status_reg);
- break;
-
- /* For downstream facing ports (these): one hub port is put
- * into test mode according to USB2 11.24.2.13, then the hub
- * must be reset (which for root hub now means rmmod+modprobe,
- * or else system reboot). See EHCI 2.3.9 and 4.14 for info
- * about the EHCI-specific stuff.
- */
- case USB_PORT_FEAT_TEST:
- if (!selector || selector > 5)
- goto error;
- spin_unlock_irqrestore(&fusbh200->lock, flags);
- fusbh200_quiesce(fusbh200);
- spin_lock_irqsave(&fusbh200->lock, flags);
-
- /* Put all enabled ports into suspend */
- temp = fusbh200_readl(fusbh200, status_reg) & ~PORT_RWC_BITS;
- if (temp & PORT_PE)
- fusbh200_writel(fusbh200, temp | PORT_SUSPEND,
- status_reg);
-
- spin_unlock_irqrestore(&fusbh200->lock, flags);
- fusbh200_halt(fusbh200);
- spin_lock_irqsave(&fusbh200->lock, flags);
-
- temp = fusbh200_readl(fusbh200, status_reg);
- temp |= selector << 16;
- fusbh200_writel(fusbh200, temp, status_reg);
- break;
-
- default:
- goto error;
- }
- fusbh200_readl(fusbh200, &fusbh200->regs->command); /* unblock posted writes */
- break;
-
- default:
-error:
- /* "stall" on error */
- retval = -EPIPE;
- }
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- return retval;
-}
-
-static void __maybe_unused fusbh200_relinquish_port(struct usb_hcd *hcd,
- int portnum)
-{
- return;
-}
-
-static int __maybe_unused fusbh200_port_handed_over(struct usb_hcd *hcd,
- int portnum)
-{
- return 0;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * There's basically three types of memory:
- * - data used only by the HCD ... kmalloc is fine
- * - async and periodic schedules, shared by HC and HCD ... these
- * need to use dma_pool or dma_alloc_coherent
- * - driver buffers, read/written by HC ... single shot DMA mapped
- *
- * There's also "register" data (e.g. PCI or SOC), which is memory mapped.
- * No memory seen by this driver is pageable.
- */
-
-/*-------------------------------------------------------------------------*/
-
-/* Allocate the key transfer structures from the previously allocated pool */
-
-static inline void fusbh200_qtd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd,
- dma_addr_t dma)
-{
- memset (qtd, 0, sizeof *qtd);
- qtd->qtd_dma = dma;
- qtd->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT);
- qtd->hw_next = FUSBH200_LIST_END(fusbh200);
- qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200);
- INIT_LIST_HEAD (&qtd->qtd_list);
-}
-
-static struct fusbh200_qtd *fusbh200_qtd_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
- struct fusbh200_qtd *qtd;
- dma_addr_t dma;
-
- qtd = dma_pool_alloc (fusbh200->qtd_pool, flags, &dma);
- if (qtd != NULL) {
- fusbh200_qtd_init(fusbh200, qtd, dma);
- }
- return qtd;
-}
-
-static inline void fusbh200_qtd_free (struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd)
-{
- dma_pool_free (fusbh200->qtd_pool, qtd, qtd->qtd_dma);
-}
-
-
-static void qh_destroy(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- /* clean qtds first, and know this is not linked */
- if (!list_empty (&qh->qtd_list) || qh->qh_next.ptr) {
- fusbh200_dbg (fusbh200, "unused qh not empty!\n");
- BUG ();
- }
- if (qh->dummy)
- fusbh200_qtd_free (fusbh200, qh->dummy);
- dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma);
- kfree(qh);
-}
-
-static struct fusbh200_qh *fusbh200_qh_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
- struct fusbh200_qh *qh;
- dma_addr_t dma;
-
- qh = kzalloc(sizeof *qh, GFP_ATOMIC);
- if (!qh)
- goto done;
- qh->hw = (struct fusbh200_qh_hw *)
- dma_pool_alloc(fusbh200->qh_pool, flags, &dma);
- if (!qh->hw)
- goto fail;
- memset(qh->hw, 0, sizeof *qh->hw);
- qh->qh_dma = dma;
- // INIT_LIST_HEAD (&qh->qh_list);
- INIT_LIST_HEAD (&qh->qtd_list);
-
- /* dummy td enables safe urb queuing */
- qh->dummy = fusbh200_qtd_alloc (fusbh200, flags);
- if (qh->dummy == NULL) {
- fusbh200_dbg (fusbh200, "no dummy td\n");
- goto fail1;
- }
-done:
- return qh;
-fail1:
- dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma);
-fail:
- kfree(qh);
- return NULL;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* The queue heads and transfer descriptors are managed from pools tied
- * to each of the "per device" structures.
- * This is the initialisation and cleanup code.
- */
-
-static void fusbh200_mem_cleanup (struct fusbh200_hcd *fusbh200)
-{
- if (fusbh200->async)
- qh_destroy(fusbh200, fusbh200->async);
- fusbh200->async = NULL;
-
- if (fusbh200->dummy)
- qh_destroy(fusbh200, fusbh200->dummy);
- fusbh200->dummy = NULL;
-
- /* DMA consistent memory and pools */
- if (fusbh200->qtd_pool)
- dma_pool_destroy (fusbh200->qtd_pool);
- fusbh200->qtd_pool = NULL;
-
- if (fusbh200->qh_pool) {
- dma_pool_destroy (fusbh200->qh_pool);
- fusbh200->qh_pool = NULL;
- }
-
- if (fusbh200->itd_pool)
- dma_pool_destroy (fusbh200->itd_pool);
- fusbh200->itd_pool = NULL;
-
- if (fusbh200->periodic)
- dma_free_coherent (fusbh200_to_hcd(fusbh200)->self.controller,
- fusbh200->periodic_size * sizeof (u32),
- fusbh200->periodic, fusbh200->periodic_dma);
- fusbh200->periodic = NULL;
-
- /* shadow periodic table */
- kfree(fusbh200->pshadow);
- fusbh200->pshadow = NULL;
-}
-
-/* remember to add cleanup code (above) if you add anything here */
-static int fusbh200_mem_init (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
- int i;
-
- /* QTDs for control/bulk/intr transfers */
- fusbh200->qtd_pool = dma_pool_create ("fusbh200_qtd",
- fusbh200_to_hcd(fusbh200)->self.controller,
- sizeof (struct fusbh200_qtd),
- 32 /* byte alignment (for hw parts) */,
- 4096 /* can't cross 4K */);
- if (!fusbh200->qtd_pool) {
- goto fail;
- }
-
- /* QHs for control/bulk/intr transfers */
- fusbh200->qh_pool = dma_pool_create ("fusbh200_qh",
- fusbh200_to_hcd(fusbh200)->self.controller,
- sizeof(struct fusbh200_qh_hw),
- 32 /* byte alignment (for hw parts) */,
- 4096 /* can't cross 4K */);
- if (!fusbh200->qh_pool) {
- goto fail;
- }
- fusbh200->async = fusbh200_qh_alloc (fusbh200, flags);
- if (!fusbh200->async) {
- goto fail;
- }
-
- /* ITD for high speed ISO transfers */
- fusbh200->itd_pool = dma_pool_create ("fusbh200_itd",
- fusbh200_to_hcd(fusbh200)->self.controller,
- sizeof (struct fusbh200_itd),
- 64 /* byte alignment (for hw parts) */,
- 4096 /* can't cross 4K */);
- if (!fusbh200->itd_pool) {
- goto fail;
- }
-
- /* Hardware periodic table */
- fusbh200->periodic = (__le32 *)
- dma_alloc_coherent (fusbh200_to_hcd(fusbh200)->self.controller,
- fusbh200->periodic_size * sizeof(__le32),
- &fusbh200->periodic_dma, 0);
- if (fusbh200->periodic == NULL) {
- goto fail;
- }
-
- for (i = 0; i < fusbh200->periodic_size; i++)
- fusbh200->periodic[i] = FUSBH200_LIST_END(fusbh200);
-
- /* software shadow of hardware table */
- fusbh200->pshadow = kcalloc(fusbh200->periodic_size, sizeof(void *), flags);
- if (fusbh200->pshadow != NULL)
- return 0;
-
-fail:
- fusbh200_dbg (fusbh200, "couldn't init memory\n");
- fusbh200_mem_cleanup (fusbh200);
- return -ENOMEM;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI hardware queue manipulation ... the core. QH/QTD manipulation.
- *
- * Control, bulk, and interrupt traffic all use "qh" lists. They list "qtd"
- * entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned
- * buffers needed for the larger number). We use one QH per endpoint, queue
- * multiple urbs (all three types) per endpoint. URBs may need several qtds.
- *
- * ISO traffic uses "ISO TD" (itd) records, and (along with
- * interrupts) needs careful scheduling. Performance improvements can be
- * an ongoing challenge. That's in "ehci-sched.c".
- *
- * USB 1.1 devices are handled (a) by "companion" OHCI or UHCI root hubs,
- * or otherwise through transaction translators (TTs) in USB 2.0 hubs using
- * (b) special fields in qh entries or (c) split iso entries. TTs will
- * buffer low/full speed data so the host collects it at high speed.
- */
-
-/*-------------------------------------------------------------------------*/
-
-/* fill a qtd, returning how much of the buffer we were able to queue up */
-
-static int
-qtd_fill(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd, dma_addr_t buf,
- size_t len, int token, int maxpacket)
-{
- int i, count;
- u64 addr = buf;
-
- /* one buffer entry per 4K ... first might be short or unaligned */
- qtd->hw_buf[0] = cpu_to_hc32(fusbh200, (u32)addr);
- qtd->hw_buf_hi[0] = cpu_to_hc32(fusbh200, (u32)(addr >> 32));
- count = 0x1000 - (buf & 0x0fff); /* rest of that page */
- if (likely (len < count)) /* ... iff needed */
- count = len;
- else {
- buf += 0x1000;
- buf &= ~0x0fff;
-
- /* per-qtd limit: from 16K to 20K (best alignment) */
- for (i = 1; count < len && i < 5; i++) {
- addr = buf;
- qtd->hw_buf[i] = cpu_to_hc32(fusbh200, (u32)addr);
- qtd->hw_buf_hi[i] = cpu_to_hc32(fusbh200,
- (u32)(addr >> 32));
- buf += 0x1000;
- if ((count + 0x1000) < len)
- count += 0x1000;
- else
- count = len;
- }
-
- /* short packets may only terminate transfers */
- if (count != len)
- count -= (count % maxpacket);
- }
- qtd->hw_token = cpu_to_hc32(fusbh200, (count << 16) | token);
- qtd->length = count;
-
- return count;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline void
-qh_update (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh, struct fusbh200_qtd *qtd)
-{
- struct fusbh200_qh_hw *hw = qh->hw;
-
- /* writes to an active overlay are unsafe */
- BUG_ON(qh->qh_state != QH_STATE_IDLE);
-
- hw->hw_qtd_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
- hw->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-
- /* Except for control endpoints, we make hardware maintain data
- * toggle (like OHCI) ... here (re)initialize the toggle in the QH,
- * and set the pseudo-toggle in udev. Only usb_clear_halt() will
- * ever clear it.
- */
- if (!(hw->hw_info1 & cpu_to_hc32(fusbh200, QH_TOGGLE_CTL))) {
- unsigned is_out, epnum;
-
- is_out = qh->is_out;
- epnum = (hc32_to_cpup(fusbh200, &hw->hw_info1) >> 8) & 0x0f;
- if (unlikely (!usb_gettoggle (qh->dev, epnum, is_out))) {
- hw->hw_token &= ~cpu_to_hc32(fusbh200, QTD_TOGGLE);
- usb_settoggle (qh->dev, epnum, is_out, 1);
- }
- }
-
- hw->hw_token &= cpu_to_hc32(fusbh200, QTD_TOGGLE | QTD_STS_PING);
-}
-
-/* if it weren't for a common silicon quirk (writing the dummy into the qh
- * overlay, so qh->hw_token wrongly becomes inactive/halted), only fault
- * recovery (including urb dequeue) would need software changes to a QH...
- */
-static void
-qh_refresh (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- struct fusbh200_qtd *qtd;
-
- if (list_empty (&qh->qtd_list))
- qtd = qh->dummy;
- else {
- qtd = list_entry (qh->qtd_list.next,
- struct fusbh200_qtd, qtd_list);
- /*
- * first qtd may already be partially processed.
- * If we come here during unlink, the QH overlay region
- * might have reference to the just unlinked qtd. The
- * qtd is updated in qh_completions(). Update the QH
- * overlay here.
- */
- if (cpu_to_hc32(fusbh200, qtd->qtd_dma) == qh->hw->hw_current) {
- qh->hw->hw_qtd_next = qtd->hw_next;
- qtd = NULL;
- }
- }
-
- if (qtd)
- qh_update (fusbh200, qh, qtd);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void qh_link_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-static void fusbh200_clear_tt_buffer_complete(struct usb_hcd *hcd,
- struct usb_host_endpoint *ep)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd);
- struct fusbh200_qh *qh = ep->hcpriv;
- unsigned long flags;
-
- spin_lock_irqsave(&fusbh200->lock, flags);
- qh->clearing_tt = 0;
- if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list)
- && fusbh200->rh_state == FUSBH200_RH_RUNNING)
- qh_link_async(fusbh200, qh);
- spin_unlock_irqrestore(&fusbh200->lock, flags);
-}
-
-static void fusbh200_clear_tt_buffer(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh,
- struct urb *urb, u32 token)
-{
-
- /* If an async split transaction gets an error or is unlinked,
- * the TT buffer may be left in an indeterminate state. We
- * have to clear the TT buffer.
- *
- * Note: this routine is never called for Isochronous transfers.
- */
- if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) {
- struct usb_device *tt = urb->dev->tt->hub;
-
- dev_dbg(&tt->dev,
- "clear tt buffer port %d, a%d ep%d t%08x\n",
- urb->dev->ttport, urb->dev->devnum,
- usb_pipeendpoint(urb->pipe), token);
-
- if (urb->dev->tt->hub !=
- fusbh200_to_hcd(fusbh200)->self.root_hub) {
- if (usb_hub_clear_tt_buffer(urb) == 0)
- qh->clearing_tt = 1;
- }
- }
-}
-
-static int qtd_copy_status (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- size_t length,
- u32 token
-)
-{
- int status = -EINPROGRESS;
-
- /* count IN/OUT bytes, not SETUP (even short packets) */
- if (likely (QTD_PID (token) != 2))
- urb->actual_length += length - QTD_LENGTH (token);
-
- /* don't modify error codes */
- if (unlikely(urb->unlinked))
- return status;
-
- /* force cleanup after short read; not always an error */
- if (unlikely (IS_SHORT_READ (token)))
- status = -EREMOTEIO;
-
- /* serious "can't proceed" faults reported by the hardware */
- if (token & QTD_STS_HALT) {
- if (token & QTD_STS_BABBLE) {
- /* FIXME "must" disable babbling device's port too */
- status = -EOVERFLOW;
- /* CERR nonzero + halt --> stall */
- } else if (QTD_CERR(token)) {
- status = -EPIPE;
-
- /* In theory, more than one of the following bits can be set
- * since they are sticky and the transaction is retried.
- * Which to test first is rather arbitrary.
- */
- } else if (token & QTD_STS_MMF) {
- /* fs/ls interrupt xfer missed the complete-split */
- status = -EPROTO;
- } else if (token & QTD_STS_DBE) {
- status = (QTD_PID (token) == 1) /* IN ? */
- ? -ENOSR /* hc couldn't read data */
- : -ECOMM; /* hc couldn't write data */
- } else if (token & QTD_STS_XACT) {
- /* timeout, bad CRC, wrong PID, etc */
- fusbh200_dbg(fusbh200, "devpath %s ep%d%s 3strikes\n",
- urb->dev->devpath,
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out");
- status = -EPROTO;
- } else { /* unknown */
- status = -EPROTO;
- }
-
- fusbh200_dbg(fusbh200,
- "dev%d ep%d%s qtd token %08x --> status %d\n",
- usb_pipedevice (urb->pipe),
- usb_pipeendpoint (urb->pipe),
- usb_pipein (urb->pipe) ? "in" : "out",
- token, status);
- }
-
- return status;
-}
-
-static void
-fusbh200_urb_done(struct fusbh200_hcd *fusbh200, struct urb *urb, int status)
-__releases(fusbh200->lock)
-__acquires(fusbh200->lock)
-{
- if (likely (urb->hcpriv != NULL)) {
- struct fusbh200_qh *qh = (struct fusbh200_qh *) urb->hcpriv;
-
- /* S-mask in a QH means it's an interrupt urb */
- if ((qh->hw->hw_info2 & cpu_to_hc32(fusbh200, QH_SMASK)) != 0) {
-
- /* ... update hc-wide periodic stats (for usbfs) */
- fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs--;
- }
- }
-
- if (unlikely(urb->unlinked)) {
- COUNT(fusbh200->stats.unlink);
- } else {
- /* report non-error and short read status as zero */
- if (status == -EINPROGRESS || status == -EREMOTEIO)
- status = 0;
- COUNT(fusbh200->stats.complete);
- }
-
-#ifdef FUSBH200_URB_TRACE
- fusbh200_dbg (fusbh200,
- "%s %s urb %p ep%d%s status %d len %d/%d\n",
- __func__, urb->dev->devpath, urb,
- usb_pipeendpoint (urb->pipe),
- usb_pipein (urb->pipe) ? "in" : "out",
- status,
- urb->actual_length, urb->transfer_buffer_length);
-#endif
-
- /* complete() can reenter this HCD */
- usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
- spin_unlock (&fusbh200->lock);
- usb_hcd_giveback_urb(fusbh200_to_hcd(fusbh200), urb, status);
- spin_lock (&fusbh200->lock);
-}
-
-static int qh_schedule (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-/*
- * Process and free completed qtds for a qh, returning URBs to drivers.
- * Chases up to qh->hw_current. Returns number of completions called,
- * indicating how much "real" work we did.
- */
-static unsigned
-qh_completions (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- struct fusbh200_qtd *last, *end = qh->dummy;
- struct list_head *entry, *tmp;
- int last_status;
- int stopped;
- unsigned count = 0;
- u8 state;
- struct fusbh200_qh_hw *hw = qh->hw;
-
- if (unlikely (list_empty (&qh->qtd_list)))
- return count;
-
- /* completions (or tasks on other cpus) must never clobber HALT
- * till we've gone through and cleaned everything up, even when
- * they add urbs to this qh's queue or mark them for unlinking.
- *
- * NOTE: unlinking expects to be done in queue order.
- *
- * It's a bug for qh->qh_state to be anything other than
- * QH_STATE_IDLE, unless our caller is scan_async() or
- * scan_intr().
- */
- state = qh->qh_state;
- qh->qh_state = QH_STATE_COMPLETING;
- stopped = (state == QH_STATE_IDLE);
-
- rescan:
- last = NULL;
- last_status = -EINPROGRESS;
- qh->needs_rescan = 0;
-
- /* remove de-activated QTDs from front of queue.
- * after faults (including short reads), cleanup this urb
- * then let the queue advance.
- * if queue is stopped, handles unlinks.
- */
- list_for_each_safe (entry, tmp, &qh->qtd_list) {
- struct fusbh200_qtd *qtd;
- struct urb *urb;
- u32 token = 0;
-
- qtd = list_entry (entry, struct fusbh200_qtd, qtd_list);
- urb = qtd->urb;
-
- /* clean up any state from previous QTD ...*/
- if (last) {
- if (likely (last->urb != urb)) {
- fusbh200_urb_done(fusbh200, last->urb, last_status);
- count++;
- last_status = -EINPROGRESS;
- }
- fusbh200_qtd_free (fusbh200, last);
- last = NULL;
- }
-
- /* ignore urbs submitted during completions we reported */
- if (qtd == end)
- break;
-
- /* hardware copies qtd out of qh overlay */
- rmb ();
- token = hc32_to_cpu(fusbh200, qtd->hw_token);
-
- /* always clean up qtds the hc de-activated */
- retry_xacterr:
- if ((token & QTD_STS_ACTIVE) == 0) {
-
- /* Report Data Buffer Error: non-fatal but useful */
- if (token & QTD_STS_DBE)
- fusbh200_dbg(fusbh200,
- "detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n",
- urb,
- usb_endpoint_num(&urb->ep->desc),
- usb_endpoint_dir_in(&urb->ep->desc) ? "in" : "out",
- urb->transfer_buffer_length,
- qtd,
- qh);
-
- /* on STALL, error, and short reads this urb must
- * complete and all its qtds must be recycled.
- */
- if ((token & QTD_STS_HALT) != 0) {
-
- /* retry transaction errors until we
- * reach the software xacterr limit
- */
- if ((token & QTD_STS_XACT) &&
- QTD_CERR(token) == 0 &&
- ++qh->xacterrs < QH_XACTERR_MAX &&
- !urb->unlinked) {
- fusbh200_dbg(fusbh200,
- "detected XactErr len %zu/%zu retry %d\n",
- qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs);
-
- /* reset the token in the qtd and the
- * qh overlay (which still contains
- * the qtd) so that we pick up from
- * where we left off
- */
- token &= ~QTD_STS_HALT;
- token |= QTD_STS_ACTIVE |
- (FUSBH200_TUNE_CERR << 10);
- qtd->hw_token = cpu_to_hc32(fusbh200,
- token);
- wmb();
- hw->hw_token = cpu_to_hc32(fusbh200,
- token);
- goto retry_xacterr;
- }
- stopped = 1;
-
- /* magic dummy for some short reads; qh won't advance.
- * that silicon quirk can kick in with this dummy too.
- *
- * other short reads won't stop the queue, including
- * control transfers (status stage handles that) or
- * most other single-qtd reads ... the queue stops if
- * URB_SHORT_NOT_OK was set so the driver submitting
- * the urbs could clean it up.
- */
- } else if (IS_SHORT_READ (token)
- && !(qtd->hw_alt_next
- & FUSBH200_LIST_END(fusbh200))) {
- stopped = 1;
- }
-
- /* stop scanning when we reach qtds the hc is using */
- } else if (likely (!stopped
- && fusbh200->rh_state >= FUSBH200_RH_RUNNING)) {
- break;
-
- /* scan the whole queue for unlinks whenever it stops */
- } else {
- stopped = 1;
-
- /* cancel everything if we halt, suspend, etc */
- if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
- last_status = -ESHUTDOWN;
-
- /* this qtd is active; skip it unless a previous qtd
- * for its urb faulted, or its urb was canceled.
- */
- else if (last_status == -EINPROGRESS && !urb->unlinked)
- continue;
-
- /* qh unlinked; token in overlay may be most current */
- if (state == QH_STATE_IDLE
- && cpu_to_hc32(fusbh200, qtd->qtd_dma)
- == hw->hw_current) {
- token = hc32_to_cpu(fusbh200, hw->hw_token);
-
- /* An unlink may leave an incomplete
- * async transaction in the TT buffer.
- * We have to clear it.
- */
- fusbh200_clear_tt_buffer(fusbh200, qh, urb, token);
- }
- }
-
- /* unless we already know the urb's status, collect qtd status
- * and update count of bytes transferred. in common short read
- * cases with only one data qtd (including control transfers),
- * queue processing won't halt. but with two or more qtds (for
- * example, with a 32 KB transfer), when the first qtd gets a
- * short read the second must be removed by hand.
- */
- if (last_status == -EINPROGRESS) {
- last_status = qtd_copy_status(fusbh200, urb,
- qtd->length, token);
- if (last_status == -EREMOTEIO
- && (qtd->hw_alt_next
- & FUSBH200_LIST_END(fusbh200)))
- last_status = -EINPROGRESS;
-
- /* As part of low/full-speed endpoint-halt processing
- * we must clear the TT buffer (11.17.5).
- */
- if (unlikely(last_status != -EINPROGRESS &&
- last_status != -EREMOTEIO)) {
- /* The TT's in some hubs malfunction when they
- * receive this request following a STALL (they
- * stop sending isochronous packets). Since a
- * STALL can't leave the TT buffer in a busy
- * state (if you believe Figures 11-48 - 11-51
- * in the USB 2.0 spec), we won't clear the TT
- * buffer in this case. Strictly speaking this
- * is a violation of the spec.
- */
- if (last_status != -EPIPE)
- fusbh200_clear_tt_buffer(fusbh200, qh, urb,
- token);
- }
- }
-
- /* if we're removing something not at the queue head,
- * patch the hardware queue pointer.
- */
- if (stopped && qtd->qtd_list.prev != &qh->qtd_list) {
- last = list_entry (qtd->qtd_list.prev,
- struct fusbh200_qtd, qtd_list);
- last->hw_next = qtd->hw_next;
- }
-
- /* remove qtd; it's recycled after possible urb completion */
- list_del (&qtd->qtd_list);
- last = qtd;
-
- /* reinit the xacterr counter for the next qtd */
- qh->xacterrs = 0;
- }
-
- /* last urb's completion might still need calling */
- if (likely (last != NULL)) {
- fusbh200_urb_done(fusbh200, last->urb, last_status);
- count++;
- fusbh200_qtd_free (fusbh200, last);
- }
-
- /* Do we need to rescan for URBs dequeued during a giveback? */
- if (unlikely(qh->needs_rescan)) {
- /* If the QH is already unlinked, do the rescan now. */
- if (state == QH_STATE_IDLE)
- goto rescan;
-
- /* Otherwise we have to wait until the QH is fully unlinked.
- * Our caller will start an unlink if qh->needs_rescan is
- * set. But if an unlink has already started, nothing needs
- * to be done.
- */
- if (state != QH_STATE_LINKED)
- qh->needs_rescan = 0;
- }
-
- /* restore original state; caller must unlink or relink */
- qh->qh_state = state;
-
- /* be sure the hardware's done with the qh before refreshing
- * it after fault cleanup, or recovering from silicon wrongly
- * overlaying the dummy qtd (which reduces DMA chatter).
- */
- if (stopped != 0 || hw->hw_qtd_next == FUSBH200_LIST_END(fusbh200)) {
- switch (state) {
- case QH_STATE_IDLE:
- qh_refresh(fusbh200, qh);
- break;
- case QH_STATE_LINKED:
- /* We won't refresh a QH that's linked (after the HC
- * stopped the queue). That avoids a race:
- * - HC reads first part of QH;
- * - CPU updates that first part and the token;
- * - HC reads rest of that QH, including token
- * Result: HC gets an inconsistent image, and then
- * DMAs to/from the wrong memory (corrupting it).
- *
- * That should be rare for interrupt transfers,
- * except maybe high bandwidth ...
- */
-
- /* Tell the caller to start an unlink */
- qh->needs_rescan = 1;
- break;
- /* otherwise, unlink already started */
- }
- }
-
- return count;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// high bandwidth multiplier, as encoded in highspeed endpoint descriptors
-#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
-// ... and packet size, for any kind of endpoint descriptor
-#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
-
-/*
- * reverse of qh_urb_transaction: free a list of TDs.
- * used for cleanup after errors, before HC sees an URB's TDs.
- */
-static void qtd_list_free (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- struct list_head *qtd_list
-) {
- struct list_head *entry, *temp;
-
- list_for_each_safe (entry, temp, qtd_list) {
- struct fusbh200_qtd *qtd;
-
- qtd = list_entry (entry, struct fusbh200_qtd, qtd_list);
- list_del (&qtd->qtd_list);
- fusbh200_qtd_free (fusbh200, qtd);
- }
-}
-
-/*
- * create a list of filled qtds for this URB; won't link into qh.
- */
-static struct list_head *
-qh_urb_transaction (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- struct list_head *head,
- gfp_t flags
-) {
- struct fusbh200_qtd *qtd, *qtd_prev;
- dma_addr_t buf;
- int len, this_sg_len, maxpacket;
- int is_input;
- u32 token;
- int i;
- struct scatterlist *sg;
-
- /*
- * URBs map to sequences of QTDs: one logical transaction
- */
- qtd = fusbh200_qtd_alloc (fusbh200, flags);
- if (unlikely (!qtd))
- return NULL;
- list_add_tail (&qtd->qtd_list, head);
- qtd->urb = urb;
-
- token = QTD_STS_ACTIVE;
- token |= (FUSBH200_TUNE_CERR << 10);
- /* for split transactions, SplitXState initialized to zero */
-
- len = urb->transfer_buffer_length;
- is_input = usb_pipein (urb->pipe);
- if (usb_pipecontrol (urb->pipe)) {
- /* SETUP pid */
- qtd_fill(fusbh200, qtd, urb->setup_dma,
- sizeof (struct usb_ctrlrequest),
- token | (2 /* "setup" */ << 8), 8);
-
- /* ... and always at least one more pid */
- token ^= QTD_TOGGLE;
- qtd_prev = qtd;
- qtd = fusbh200_qtd_alloc (fusbh200, flags);
- if (unlikely (!qtd))
- goto cleanup;
- qtd->urb = urb;
- qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
- list_add_tail (&qtd->qtd_list, head);
-
- /* for zero length DATA stages, STATUS is always IN */
- if (len == 0)
- token |= (1 /* "in" */ << 8);
- }
-
- /*
- * data transfer stage: buffer setup
- */
- i = urb->num_mapped_sgs;
- if (len > 0 && i > 0) {
- sg = urb->sg;
- buf = sg_dma_address(sg);
-
- /* urb->transfer_buffer_length may be smaller than the
- * size of the scatterlist (or vice versa)
- */
- this_sg_len = min_t(int, sg_dma_len(sg), len);
- } else {
- sg = NULL;
- buf = urb->transfer_dma;
- this_sg_len = len;
- }
-
- if (is_input)
- token |= (1 /* "in" */ << 8);
- /* else it's already initted to "out" pid (0 << 8) */
-
- maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input));
-
- /*
- * buffer gets wrapped in one or more qtds;
- * last one may be "short" (including zero len)
- * and may serve as a control status ack
- */
- for (;;) {
- int this_qtd_len;
-
- this_qtd_len = qtd_fill(fusbh200, qtd, buf, this_sg_len, token,
- maxpacket);
- this_sg_len -= this_qtd_len;
- len -= this_qtd_len;
- buf += this_qtd_len;
-
- /*
- * short reads advance to a "magic" dummy instead of the next
- * qtd ... that forces the queue to stop, for manual cleanup.
- * (this will usually be overridden later.)
- */
- if (is_input)
- qtd->hw_alt_next = fusbh200->async->hw->hw_alt_next;
-
- /* qh makes control packets use qtd toggle; maybe switch it */
- if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0)
- token ^= QTD_TOGGLE;
-
- if (likely(this_sg_len <= 0)) {
- if (--i <= 0 || len <= 0)
- break;
- sg = sg_next(sg);
- buf = sg_dma_address(sg);
- this_sg_len = min_t(int, sg_dma_len(sg), len);
- }
-
- qtd_prev = qtd;
- qtd = fusbh200_qtd_alloc (fusbh200, flags);
- if (unlikely (!qtd))
- goto cleanup;
- qtd->urb = urb;
- qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
- list_add_tail (&qtd->qtd_list, head);
- }
-
- /*
- * unless the caller requires manual cleanup after short reads,
- * have the alt_next mechanism keep the queue running after the
- * last data qtd (the only one, for control and most other cases).
- */
- if (likely ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0
- || usb_pipecontrol (urb->pipe)))
- qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-
- /*
- * control requests may need a terminating data "status" ack;
- * other OUT ones may need a terminating short packet
- * (zero length).
- */
- if (likely (urb->transfer_buffer_length != 0)) {
- int one_more = 0;
-
- if (usb_pipecontrol (urb->pipe)) {
- one_more = 1;
- token ^= 0x0100; /* "in" <--> "out" */
- token |= QTD_TOGGLE; /* force DATA1 */
- } else if (usb_pipeout(urb->pipe)
- && (urb->transfer_flags & URB_ZERO_PACKET)
- && !(urb->transfer_buffer_length % maxpacket)) {
- one_more = 1;
- }
- if (one_more) {
- qtd_prev = qtd;
- qtd = fusbh200_qtd_alloc (fusbh200, flags);
- if (unlikely (!qtd))
- goto cleanup;
- qtd->urb = urb;
- qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
- list_add_tail (&qtd->qtd_list, head);
-
- /* never any data in such packets */
- qtd_fill(fusbh200, qtd, 0, 0, token, 0);
- }
- }
-
- /* by default, enable interrupt on urb completion */
- if (likely (!(urb->transfer_flags & URB_NO_INTERRUPT)))
- qtd->hw_token |= cpu_to_hc32(fusbh200, QTD_IOC);
- return head;
-
-cleanup:
- qtd_list_free (fusbh200, urb, head);
- return NULL;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// Would be best to create all qh's from config descriptors,
-// when each interface/altsetting is established. Unlink
-// any previous qh and cancel its urbs first; endpoints are
-// implicitly reset then (data toggle too).
-// That'd mean updating how usbcore talks to HCDs. (2.7?)
-
-
-/*
- * Each QH holds a qtd list; a QH is used for everything except iso.
- *
- * For interrupt urbs, the scheduler must set the microframe scheduling
- * mask(s) each time the QH gets scheduled. For highspeed, that's
- * just one microframe in the s-mask. For split interrupt transactions
- * there are additional complications: c-mask, maybe FSTNs.
- */
-static struct fusbh200_qh *
-qh_make (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- gfp_t flags
-) {
- struct fusbh200_qh *qh = fusbh200_qh_alloc (fusbh200, flags);
- u32 info1 = 0, info2 = 0;
- int is_input, type;
- int maxp = 0;
- struct usb_tt *tt = urb->dev->tt;
- struct fusbh200_qh_hw *hw;
-
- if (!qh)
- return qh;
-
- /*
- * init endpoint/device data for this QH
- */
- info1 |= usb_pipeendpoint (urb->pipe) << 8;
- info1 |= usb_pipedevice (urb->pipe) << 0;
-
- is_input = usb_pipein (urb->pipe);
- type = usb_pipetype (urb->pipe);
- maxp = usb_maxpacket (urb->dev, urb->pipe, !is_input);
-
- /* 1024 byte maxpacket is a hardware ceiling. High bandwidth
- * acts like up to 3KB, but is built from smaller packets.
- */
- if (max_packet(maxp) > 1024) {
- fusbh200_dbg(fusbh200, "bogus qh maxpacket %d\n", max_packet(maxp));
- goto done;
- }
-
- /* Compute interrupt scheduling parameters just once, and save.
- * - allowing for high bandwidth, how many nsec/uframe are used?
- * - split transactions need a second CSPLIT uframe; same question
- * - splits also need a schedule gap (for full/low speed I/O)
- * - qh has a polling interval
- *
- * For control/bulk requests, the HC or TT handles these.
- */
- if (type == PIPE_INTERRUPT) {
- qh->usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH,
- is_input, 0,
- hb_mult(maxp) * max_packet(maxp)));
- qh->start = NO_FRAME;
-
- if (urb->dev->speed == USB_SPEED_HIGH) {
- qh->c_usecs = 0;
- qh->gap_uf = 0;
-
- qh->period = urb->interval >> 3;
- if (qh->period == 0 && urb->interval != 1) {
- /* NOTE interval 2 or 4 uframes could work.
- * But interval 1 scheduling is simpler, and
- * includes high bandwidth.
- */
- urb->interval = 1;
- } else if (qh->period > fusbh200->periodic_size) {
- qh->period = fusbh200->periodic_size;
- urb->interval = qh->period << 3;
- }
- } else {
- int think_time;
-
- /* gap is f(FS/LS transfer times) */
- qh->gap_uf = 1 + usb_calc_bus_time (urb->dev->speed,
- is_input, 0, maxp) / (125 * 1000);
-
- /* FIXME this just approximates SPLIT/CSPLIT times */
- if (is_input) { // SPLIT, gap, CSPLIT+DATA
- qh->c_usecs = qh->usecs + HS_USECS (0);
- qh->usecs = HS_USECS (1);
- } else { // SPLIT+DATA, gap, CSPLIT
- qh->usecs += HS_USECS (1);
- qh->c_usecs = HS_USECS (0);
- }
-
- think_time = tt ? tt->think_time : 0;
- qh->tt_usecs = NS_TO_US (think_time +
- usb_calc_bus_time (urb->dev->speed,
- is_input, 0, max_packet (maxp)));
- qh->period = urb->interval;
- if (qh->period > fusbh200->periodic_size) {
- qh->period = fusbh200->periodic_size;
- urb->interval = qh->period;
- }
- }
- }
-
- /* support for tt scheduling, and access to toggles */
- qh->dev = urb->dev;
-
- /* using TT? */
- switch (urb->dev->speed) {
- case USB_SPEED_LOW:
- info1 |= QH_LOW_SPEED;
- /* FALL THROUGH */
-
- case USB_SPEED_FULL:
- /* EPS 0 means "full" */
- if (type != PIPE_INTERRUPT)
- info1 |= (FUSBH200_TUNE_RL_TT << 28);
- if (type == PIPE_CONTROL) {
- info1 |= QH_CONTROL_EP; /* for TT */
- info1 |= QH_TOGGLE_CTL; /* toggle from qtd */
- }
- info1 |= maxp << 16;
-
- info2 |= (FUSBH200_TUNE_MULT_TT << 30);
-
- /* Some Freescale processors have an erratum in which the
- * port number in the queue head was 0..N-1 instead of 1..N.
- */
- if (fusbh200_has_fsl_portno_bug(fusbh200))
- info2 |= (urb->dev->ttport-1) << 23;
- else
- info2 |= urb->dev->ttport << 23;
-
- /* set the address of the TT; for TDI's integrated
- * root hub tt, leave it zeroed.
- */
- if (tt && tt->hub != fusbh200_to_hcd(fusbh200)->self.root_hub)
- info2 |= tt->hub->devnum << 16;
-
- /* NOTE: if (PIPE_INTERRUPT) { scheduler sets c-mask } */
-
- break;
-
- case USB_SPEED_HIGH: /* no TT involved */
- info1 |= QH_HIGH_SPEED;
- if (type == PIPE_CONTROL) {
- info1 |= (FUSBH200_TUNE_RL_HS << 28);
- info1 |= 64 << 16; /* usb2 fixed maxpacket */
- info1 |= QH_TOGGLE_CTL; /* toggle from qtd */
- info2 |= (FUSBH200_TUNE_MULT_HS << 30);
- } else if (type == PIPE_BULK) {
- info1 |= (FUSBH200_TUNE_RL_HS << 28);
- /* The USB spec says that high speed bulk endpoints
- * always use 512 byte maxpacket. But some device
- * vendors decided to ignore that, and MSFT is happy
- * to help them do so. So now people expect to use
- * such nonconformant devices with Linux too; sigh.
- */
- info1 |= max_packet(maxp) << 16;
- info2 |= (FUSBH200_TUNE_MULT_HS << 30);
- } else { /* PIPE_INTERRUPT */
- info1 |= max_packet (maxp) << 16;
- info2 |= hb_mult (maxp) << 30;
- }
- break;
- default:
- fusbh200_dbg(fusbh200, "bogus dev %p speed %d\n", urb->dev,
- urb->dev->speed);
-done:
- qh_destroy(fusbh200, qh);
- return NULL;
- }
-
- /* NOTE: if (PIPE_INTERRUPT) { scheduler sets s-mask } */
-
- /* init as live, toggle clear, advance to dummy */
- qh->qh_state = QH_STATE_IDLE;
- hw = qh->hw;
- hw->hw_info1 = cpu_to_hc32(fusbh200, info1);
- hw->hw_info2 = cpu_to_hc32(fusbh200, info2);
- qh->is_out = !is_input;
- usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe), !is_input, 1);
- qh_refresh (fusbh200, qh);
- return qh;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void enable_async(struct fusbh200_hcd *fusbh200)
-{
- if (fusbh200->async_count++)
- return;
-
- /* Stop waiting to turn off the async schedule */
- fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_ASYNC);
-
- /* Don't start the schedule until ASS is 0 */
- fusbh200_poll_ASS(fusbh200);
- turn_on_io_watchdog(fusbh200);
-}
-
-static void disable_async(struct fusbh200_hcd *fusbh200)
-{
- if (--fusbh200->async_count)
- return;
-
- /* The async schedule and async_unlink list are supposed to be empty */
- WARN_ON(fusbh200->async->qh_next.qh || fusbh200->async_unlink);
-
- /* Don't turn off the schedule until ASS is 1 */
- fusbh200_poll_ASS(fusbh200);
-}
-
-/* move qh (and its qtds) onto async queue; maybe enable queue. */
-
-static void qh_link_async (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- __hc32 dma = QH_NEXT(fusbh200, qh->qh_dma);
- struct fusbh200_qh *head;
-
- /* Don't link a QH if there's a Clear-TT-Buffer pending */
- if (unlikely(qh->clearing_tt))
- return;
-
- WARN_ON(qh->qh_state != QH_STATE_IDLE);
-
- /* clear halt and/or toggle; and maybe recover from silicon quirk */
- qh_refresh(fusbh200, qh);
-
- /* splice right after start */
- head = fusbh200->async;
- qh->qh_next = head->qh_next;
- qh->hw->hw_next = head->hw->hw_next;
- wmb ();
-
- head->qh_next.qh = qh;
- head->hw->hw_next = dma;
-
- qh->xacterrs = 0;
- qh->qh_state = QH_STATE_LINKED;
- /* qtd completions reported later by interrupt */
-
- enable_async(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * For control/bulk/interrupt, return QH with these TDs appended.
- * Allocates and initializes the QH if necessary.
- * Returns null if it can't allocate a QH it needs to.
- * If the QH has TDs (urbs) already, that's great.
- */
-static struct fusbh200_qh *qh_append_tds (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- struct list_head *qtd_list,
- int epnum,
- void **ptr
-)
-{
- struct fusbh200_qh *qh = NULL;
- __hc32 qh_addr_mask = cpu_to_hc32(fusbh200, 0x7f);
-
- qh = (struct fusbh200_qh *) *ptr;
- if (unlikely (qh == NULL)) {
- /* can't sleep here, we have fusbh200->lock... */
- qh = qh_make (fusbh200, urb, GFP_ATOMIC);
- *ptr = qh;
- }
- if (likely (qh != NULL)) {
- struct fusbh200_qtd *qtd;
-
- if (unlikely (list_empty (qtd_list)))
- qtd = NULL;
- else
- qtd = list_entry (qtd_list->next, struct fusbh200_qtd,
- qtd_list);
-
- /* control qh may need patching ... */
- if (unlikely (epnum == 0)) {
-
- /* usb_reset_device() briefly reverts to address 0 */
- if (usb_pipedevice (urb->pipe) == 0)
- qh->hw->hw_info1 &= ~qh_addr_mask;
- }
-
- /* just one way to queue requests: swap with the dummy qtd.
- * only hc or qh_refresh() ever modify the overlay.
- */
- if (likely (qtd != NULL)) {
- struct fusbh200_qtd *dummy;
- dma_addr_t dma;
- __hc32 token;
-
- /* to avoid racing the HC, use the dummy td instead of
- * the first td of our list (becomes new dummy). both
- * tds stay deactivated until we're done, when the
- * HC is allowed to fetch the old dummy (4.10.2).
- */
- token = qtd->hw_token;
- qtd->hw_token = HALT_BIT(fusbh200);
-
- dummy = qh->dummy;
-
- dma = dummy->qtd_dma;
- *dummy = *qtd;
- dummy->qtd_dma = dma;
-
- list_del (&qtd->qtd_list);
- list_add (&dummy->qtd_list, qtd_list);
- list_splice_tail(qtd_list, &qh->qtd_list);
-
- fusbh200_qtd_init(fusbh200, qtd, qtd->qtd_dma);
- qh->dummy = qtd;
-
- /* hc must see the new dummy at list end */
- dma = qtd->qtd_dma;
- qtd = list_entry (qh->qtd_list.prev,
- struct fusbh200_qtd, qtd_list);
- qtd->hw_next = QTD_NEXT(fusbh200, dma);
-
- /* let the hc process these next qtds */
- wmb ();
- dummy->hw_token = token;
-
- urb->hcpriv = qh;
- }
- }
- return qh;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int
-submit_async (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- struct list_head *qtd_list,
- gfp_t mem_flags
-) {
- int epnum;
- unsigned long flags;
- struct fusbh200_qh *qh = NULL;
- int rc;
-
- epnum = urb->ep->desc.bEndpointAddress;
-
-#ifdef FUSBH200_URB_TRACE
- {
- struct fusbh200_qtd *qtd;
- qtd = list_entry(qtd_list->next, struct fusbh200_qtd, qtd_list);
- fusbh200_dbg(fusbh200,
- "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
- __func__, urb->dev->devpath, urb,
- epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
- urb->transfer_buffer_length,
- qtd, urb->ep->hcpriv);
- }
-#endif
-
- spin_lock_irqsave (&fusbh200->lock, flags);
- if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
- rc = -ESHUTDOWN;
- goto done;
- }
- rc = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
- if (unlikely(rc))
- goto done;
-
- qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv);
- if (unlikely(qh == NULL)) {
- usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
- rc = -ENOMEM;
- goto done;
- }
-
- /* Control/bulk operations through TTs don't need scheduling,
- * the HC and TT handle it when the TT has a buffer ready.
- */
- if (likely (qh->qh_state == QH_STATE_IDLE))
- qh_link_async(fusbh200, qh);
- done:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- if (unlikely (qh == NULL))
- qtd_list_free (fusbh200, urb, qtd_list);
- return rc;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void single_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- struct fusbh200_qh *prev;
-
- /* Add to the end of the list of QHs waiting for the next IAAD */
- qh->qh_state = QH_STATE_UNLINK;
- if (fusbh200->async_unlink)
- fusbh200->async_unlink_last->unlink_next = qh;
- else
- fusbh200->async_unlink = qh;
- fusbh200->async_unlink_last = qh;
-
- /* Unlink it from the schedule */
- prev = fusbh200->async;
- while (prev->qh_next.qh != qh)
- prev = prev->qh_next.qh;
-
- prev->hw->hw_next = qh->hw->hw_next;
- prev->qh_next = qh->qh_next;
- if (fusbh200->qh_scan_next == qh)
- fusbh200->qh_scan_next = qh->qh_next.qh;
-}
-
-static void start_iaa_cycle(struct fusbh200_hcd *fusbh200, bool nested)
-{
- /*
- * Do nothing if an IAA cycle is already running or
- * if one will be started shortly.
- */
- if (fusbh200->async_iaa || fusbh200->async_unlinking)
- return;
-
- /* Do all the waiting QHs at once */
- fusbh200->async_iaa = fusbh200->async_unlink;
- fusbh200->async_unlink = NULL;
-
- /* If the controller isn't running, we don't have to wait for it */
- if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING)) {
- if (!nested) /* Avoid recursion */
- end_unlink_async(fusbh200);
-
- /* Otherwise start a new IAA cycle */
- } else if (likely(fusbh200->rh_state == FUSBH200_RH_RUNNING)) {
- /* Make sure the unlinks are all visible to the hardware */
- wmb();
-
- fusbh200_writel(fusbh200, fusbh200->command | CMD_IAAD,
- &fusbh200->regs->command);
- fusbh200_readl(fusbh200, &fusbh200->regs->command);
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IAA_WATCHDOG, true);
- }
-}
-
-/* the async qh for the qtds being unlinked are now gone from the HC */
-
-static void end_unlink_async(struct fusbh200_hcd *fusbh200)
-{
- struct fusbh200_qh *qh;
-
- /* Process the idle QHs */
- restart:
- fusbh200->async_unlinking = true;
- while (fusbh200->async_iaa) {
- qh = fusbh200->async_iaa;
- fusbh200->async_iaa = qh->unlink_next;
- qh->unlink_next = NULL;
-
- qh->qh_state = QH_STATE_IDLE;
- qh->qh_next.qh = NULL;
-
- qh_completions(fusbh200, qh);
- if (!list_empty(&qh->qtd_list) &&
- fusbh200->rh_state == FUSBH200_RH_RUNNING)
- qh_link_async(fusbh200, qh);
- disable_async(fusbh200);
- }
- fusbh200->async_unlinking = false;
-
- /* Start a new IAA cycle if any QHs are waiting for it */
- if (fusbh200->async_unlink) {
- start_iaa_cycle(fusbh200, true);
- if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING))
- goto restart;
- }
-}
-
-static void unlink_empty_async(struct fusbh200_hcd *fusbh200)
-{
- struct fusbh200_qh *qh, *next;
- bool stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING);
- bool check_unlinks_later = false;
-
- /* Unlink all the async QHs that have been empty for a timer cycle */
- next = fusbh200->async->qh_next.qh;
- while (next) {
- qh = next;
- next = qh->qh_next.qh;
-
- if (list_empty(&qh->qtd_list) &&
- qh->qh_state == QH_STATE_LINKED) {
- if (!stopped && qh->unlink_cycle ==
- fusbh200->async_unlink_cycle)
- check_unlinks_later = true;
- else
- single_unlink_async(fusbh200, qh);
- }
- }
-
- /* Start a new IAA cycle if any QHs are waiting for it */
- if (fusbh200->async_unlink)
- start_iaa_cycle(fusbh200, false);
-
- /* QHs that haven't been empty for long enough will be handled later */
- if (check_unlinks_later) {
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true);
- ++fusbh200->async_unlink_cycle;
- }
-}
-
-/* makes sure the async qh will become idle */
-/* caller must own fusbh200->lock */
-
-static void start_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- /*
- * If the QH isn't linked then there's nothing we can do
- * unless we were called during a giveback, in which case
- * qh_completions() has to deal with it.
- */
- if (qh->qh_state != QH_STATE_LINKED) {
- if (qh->qh_state == QH_STATE_COMPLETING)
- qh->needs_rescan = 1;
- return;
- }
-
- single_unlink_async(fusbh200, qh);
- start_iaa_cycle(fusbh200, false);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void scan_async (struct fusbh200_hcd *fusbh200)
-{
- struct fusbh200_qh *qh;
- bool check_unlinks_later = false;
-
- fusbh200->qh_scan_next = fusbh200->async->qh_next.qh;
- while (fusbh200->qh_scan_next) {
- qh = fusbh200->qh_scan_next;
- fusbh200->qh_scan_next = qh->qh_next.qh;
- rescan:
- /* clean any finished work for this qh */
- if (!list_empty(&qh->qtd_list)) {
- int temp;
-
- /*
- * Unlinks could happen here; completion reporting
- * drops the lock. That's why fusbh200->qh_scan_next
- * always holds the next qh to scan; if the next qh
- * gets unlinked then fusbh200->qh_scan_next is adjusted
- * in single_unlink_async().
- */
- temp = qh_completions(fusbh200, qh);
- if (qh->needs_rescan) {
- start_unlink_async(fusbh200, qh);
- } else if (list_empty(&qh->qtd_list)
- && qh->qh_state == QH_STATE_LINKED) {
- qh->unlink_cycle = fusbh200->async_unlink_cycle;
- check_unlinks_later = true;
- } else if (temp != 0)
- goto rescan;
- }
- }
-
- /*
- * Unlink empty entries, reducing DMA usage as well
- * as HCD schedule-scanning costs. Delay for any qh
- * we just scanned, there's a not-unusual case that it
- * doesn't stay idle for long.
- */
- if (check_unlinks_later && fusbh200->rh_state == FUSBH200_RH_RUNNING &&
- !(fusbh200->enabled_hrtimer_events &
- BIT(FUSBH200_HRTIMER_ASYNC_UNLINKS))) {
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true);
- ++fusbh200->async_unlink_cycle;
- }
-}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI scheduled transaction support: interrupt, iso, split iso
- * These are called "periodic" transactions in the EHCI spec.
- *
- * Note that for interrupt transfers, the QH/QTD manipulation is shared
- * with the "asynchronous" transaction support (control/bulk transfers).
- * The only real difference is in how interrupt transfers are scheduled.
- *
- * For ISO, we make an "iso_stream" head to serve the same role as a QH.
- * It keeps track of every ITD (or SITD) that's linked, and holds enough
- * pre-calculated schedule data to make appending to the queue be quick.
- */
-
-static int fusbh200_get_frame (struct usb_hcd *hcd);
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * periodic_next_shadow - return "next" pointer on shadow list
- * @periodic: host pointer to qh/itd
- * @tag: hardware tag for type of this record
- */
-static union fusbh200_shadow *
-periodic_next_shadow(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic,
- __hc32 tag)
-{
- switch (hc32_to_cpu(fusbh200, tag)) {
- case Q_TYPE_QH:
- return &periodic->qh->qh_next;
- case Q_TYPE_FSTN:
- return &periodic->fstn->fstn_next;
- default:
- return &periodic->itd->itd_next;
- }
-}
-
-static __hc32 *
-shadow_next_periodic(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic,
- __hc32 tag)
-{
- switch (hc32_to_cpu(fusbh200, tag)) {
- /* our fusbh200_shadow.qh is actually software part */
- case Q_TYPE_QH:
- return &periodic->qh->hw->hw_next;
- /* others are hw parts */
- default:
- return periodic->hw_next;
- }
-}
-
-/* caller must hold fusbh200->lock */
-static void periodic_unlink (struct fusbh200_hcd *fusbh200, unsigned frame, void *ptr)
-{
- union fusbh200_shadow *prev_p = &fusbh200->pshadow[frame];
- __hc32 *hw_p = &fusbh200->periodic[frame];
- union fusbh200_shadow here = *prev_p;
-
- /* find predecessor of "ptr"; hw and shadow lists are in sync */
- while (here.ptr && here.ptr != ptr) {
- prev_p = periodic_next_shadow(fusbh200, prev_p,
- Q_NEXT_TYPE(fusbh200, *hw_p));
- hw_p = shadow_next_periodic(fusbh200, &here,
- Q_NEXT_TYPE(fusbh200, *hw_p));
- here = *prev_p;
- }
- /* an interrupt entry (at list end) could have been shared */
- if (!here.ptr)
- return;
-
- /* update shadow and hardware lists ... the old "next" pointers
- * from ptr may still be in use, the caller updates them.
- */
- *prev_p = *periodic_next_shadow(fusbh200, &here,
- Q_NEXT_TYPE(fusbh200, *hw_p));
-
- *hw_p = *shadow_next_periodic(fusbh200, &here,
- Q_NEXT_TYPE(fusbh200, *hw_p));
-}
-
-/* how many of the uframe's 125 usecs are allocated? */
-static unsigned short
-periodic_usecs (struct fusbh200_hcd *fusbh200, unsigned frame, unsigned uframe)
-{
- __hc32 *hw_p = &fusbh200->periodic [frame];
- union fusbh200_shadow *q = &fusbh200->pshadow [frame];
- unsigned usecs = 0;
- struct fusbh200_qh_hw *hw;
-
- while (q->ptr) {
- switch (hc32_to_cpu(fusbh200, Q_NEXT_TYPE(fusbh200, *hw_p))) {
- case Q_TYPE_QH:
- hw = q->qh->hw;
- /* is it in the S-mask? */
- if (hw->hw_info2 & cpu_to_hc32(fusbh200, 1 << uframe))
- usecs += q->qh->usecs;
- /* ... or C-mask? */
- if (hw->hw_info2 & cpu_to_hc32(fusbh200,
- 1 << (8 + uframe)))
- usecs += q->qh->c_usecs;
- hw_p = &hw->hw_next;
- q = &q->qh->qh_next;
- break;
- // case Q_TYPE_FSTN:
- default:
- /* for "save place" FSTNs, count the relevant INTR
- * bandwidth from the previous frame
- */
- if (q->fstn->hw_prev != FUSBH200_LIST_END(fusbh200)) {
- fusbh200_dbg (fusbh200, "ignoring FSTN cost ...\n");
- }
- hw_p = &q->fstn->hw_next;
- q = &q->fstn->fstn_next;
- break;
- case Q_TYPE_ITD:
- if (q->itd->hw_transaction[uframe])
- usecs += q->itd->stream->usecs;
- hw_p = &q->itd->hw_next;
- q = &q->itd->itd_next;
- break;
- }
- }
- if (usecs > fusbh200->uframe_periodic_max)
- fusbh200_err (fusbh200, "uframe %d sched overrun: %d usecs\n",
- frame * 8 + uframe, usecs);
- return usecs;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int same_tt (struct usb_device *dev1, struct usb_device *dev2)
-{
- if (!dev1->tt || !dev2->tt)
- return 0;
- if (dev1->tt != dev2->tt)
- return 0;
- if (dev1->tt->multi)
- return dev1->ttport == dev2->ttport;
- else
- return 1;
-}
-
-/* return true iff the device's transaction translator is available
- * for a periodic transfer starting at the specified frame, using
- * all the uframes in the mask.
- */
-static int tt_no_collision (
- struct fusbh200_hcd *fusbh200,
- unsigned period,
- struct usb_device *dev,
- unsigned frame,
- u32 uf_mask
-)
-{
- if (period == 0) /* error */
- return 0;
-
- /* note bandwidth wastage: split never follows csplit
- * (different dev or endpoint) until the next uframe.
- * calling convention doesn't make that distinction.
- */
- for (; frame < fusbh200->periodic_size; frame += period) {
- union fusbh200_shadow here;
- __hc32 type;
- struct fusbh200_qh_hw *hw;
-
- here = fusbh200->pshadow [frame];
- type = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [frame]);
- while (here.ptr) {
- switch (hc32_to_cpu(fusbh200, type)) {
- case Q_TYPE_ITD:
- type = Q_NEXT_TYPE(fusbh200, here.itd->hw_next);
- here = here.itd->itd_next;
- continue;
- case Q_TYPE_QH:
- hw = here.qh->hw;
- if (same_tt (dev, here.qh->dev)) {
- u32 mask;
-
- mask = hc32_to_cpu(fusbh200,
- hw->hw_info2);
- /* "knows" no gap is needed */
- mask |= mask >> 8;
- if (mask & uf_mask)
- break;
- }
- type = Q_NEXT_TYPE(fusbh200, hw->hw_next);
- here = here.qh->qh_next;
- continue;
- // case Q_TYPE_FSTN:
- default:
- fusbh200_dbg (fusbh200,
- "periodic frame %d bogus type %d\n",
- frame, type);
- }
-
- /* collision or error */
- return 0;
- }
- }
-
- /* no collision */
- return 1;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void enable_periodic(struct fusbh200_hcd *fusbh200)
-{
- if (fusbh200->periodic_count++)
- return;
-
- /* Stop waiting to turn off the periodic schedule */
- fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_PERIODIC);
-
- /* Don't start the schedule until PSS is 0 */
- fusbh200_poll_PSS(fusbh200);
- turn_on_io_watchdog(fusbh200);
-}
-
-static void disable_periodic(struct fusbh200_hcd *fusbh200)
-{
- if (--fusbh200->periodic_count)
- return;
-
- /* Don't turn off the schedule until PSS is 1 */
- fusbh200_poll_PSS(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* periodic schedule slots have iso tds (normal or split) first, then a
- * sparse tree for active interrupt transfers.
- *
- * this just links in a qh; caller guarantees uframe masks are set right.
- * no FSTN support (yet; fusbh200 0.96+)
- */
-static void qh_link_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- unsigned i;
- unsigned period = qh->period;
-
- dev_dbg (&qh->dev->dev,
- "link qh%d-%04x/%p start %d [%d/%d us]\n",
- period, hc32_to_cpup(fusbh200, &qh->hw->hw_info2)
- & (QH_CMASK | QH_SMASK),
- qh, qh->start, qh->usecs, qh->c_usecs);
-
- /* high bandwidth, or otherwise every microframe */
- if (period == 0)
- period = 1;
-
- for (i = qh->start; i < fusbh200->periodic_size; i += period) {
- union fusbh200_shadow *prev = &fusbh200->pshadow[i];
- __hc32 *hw_p = &fusbh200->periodic[i];
- union fusbh200_shadow here = *prev;
- __hc32 type = 0;
-
- /* skip the iso nodes at list head */
- while (here.ptr) {
- type = Q_NEXT_TYPE(fusbh200, *hw_p);
- if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH))
- break;
- prev = periodic_next_shadow(fusbh200, prev, type);
- hw_p = shadow_next_periodic(fusbh200, &here, type);
- here = *prev;
- }
-
- /* sorting each branch by period (slow-->fast)
- * enables sharing interior tree nodes
- */
- while (here.ptr && qh != here.qh) {
- if (qh->period > here.qh->period)
- break;
- prev = &here.qh->qh_next;
- hw_p = &here.qh->hw->hw_next;
- here = *prev;
- }
- /* link in this qh, unless some earlier pass did that */
- if (qh != here.qh) {
- qh->qh_next = here;
- if (here.qh)
- qh->hw->hw_next = *hw_p;
- wmb ();
- prev->qh = qh;
- *hw_p = QH_NEXT (fusbh200, qh->qh_dma);
- }
- }
- qh->qh_state = QH_STATE_LINKED;
- qh->xacterrs = 0;
-
- /* update per-qh bandwidth for usbfs */
- fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated += qh->period
- ? ((qh->usecs + qh->c_usecs) / qh->period)
- : (qh->usecs * 8);
-
- list_add(&qh->intr_node, &fusbh200->intr_qh_list);
-
- /* maybe enable periodic schedule processing */
- ++fusbh200->intr_count;
- enable_periodic(fusbh200);
-}
-
-static void qh_unlink_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- unsigned i;
- unsigned period;
-
- /*
- * If qh is for a low/full-speed device, simply unlinking it
- * could interfere with an ongoing split transaction. To unlink
- * it safely would require setting the QH_INACTIVATE bit and
- * waiting at least one frame, as described in EHCI 4.12.2.5.
- *
- * We won't bother with any of this. Instead, we assume that the
- * only reason for unlinking an interrupt QH while the current URB
- * is still active is to dequeue all the URBs (flush the whole
- * endpoint queue).
- *
- * If rebalancing the periodic schedule is ever implemented, this
- * approach will no longer be valid.
- */
-
- /* high bandwidth, or otherwise part of every microframe */
- if ((period = qh->period) == 0)
- period = 1;
-
- for (i = qh->start; i < fusbh200->periodic_size; i += period)
- periodic_unlink (fusbh200, i, qh);
-
- /* update per-qh bandwidth for usbfs */
- fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated -= qh->period
- ? ((qh->usecs + qh->c_usecs) / qh->period)
- : (qh->usecs * 8);
-
- dev_dbg (&qh->dev->dev,
- "unlink qh%d-%04x/%p start %d [%d/%d us]\n",
- qh->period,
- hc32_to_cpup(fusbh200, &qh->hw->hw_info2) & (QH_CMASK | QH_SMASK),
- qh, qh->start, qh->usecs, qh->c_usecs);
-
- /* qh->qh_next still "live" to HC */
- qh->qh_state = QH_STATE_UNLINK;
- qh->qh_next.ptr = NULL;
-
- if (fusbh200->qh_scan_next == qh)
- fusbh200->qh_scan_next = list_entry(qh->intr_node.next,
- struct fusbh200_qh, intr_node);
- list_del(&qh->intr_node);
-}
-
-static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- /* If the QH isn't linked then there's nothing we can do
- * unless we were called during a giveback, in which case
- * qh_completions() has to deal with it.
- */
- if (qh->qh_state != QH_STATE_LINKED) {
- if (qh->qh_state == QH_STATE_COMPLETING)
- qh->needs_rescan = 1;
- return;
- }
-
- qh_unlink_periodic (fusbh200, qh);
-
- /* Make sure the unlinks are visible before starting the timer */
- wmb();
-
- /*
- * The EHCI spec doesn't say how long it takes the controller to
- * stop accessing an unlinked interrupt QH. The timer delay is
- * 9 uframes; presumably that will be long enough.
- */
- qh->unlink_cycle = fusbh200->intr_unlink_cycle;
-
- /* New entries go at the end of the intr_unlink list */
- if (fusbh200->intr_unlink)
- fusbh200->intr_unlink_last->unlink_next = qh;
- else
- fusbh200->intr_unlink = qh;
- fusbh200->intr_unlink_last = qh;
-
- if (fusbh200->intr_unlinking)
- ; /* Avoid recursive calls */
- else if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
- fusbh200_handle_intr_unlinks(fusbh200);
- else if (fusbh200->intr_unlink == qh) {
- fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true);
- ++fusbh200->intr_unlink_cycle;
- }
-}
-
-static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- struct fusbh200_qh_hw *hw = qh->hw;
- int rc;
-
- qh->qh_state = QH_STATE_IDLE;
- hw->hw_next = FUSBH200_LIST_END(fusbh200);
-
- qh_completions(fusbh200, qh);
-
- /* reschedule QH iff another request is queued */
- if (!list_empty(&qh->qtd_list) && fusbh200->rh_state == FUSBH200_RH_RUNNING) {
- rc = qh_schedule(fusbh200, qh);
-
- /* An error here likely indicates handshake failure
- * or no space left in the schedule. Neither fault
- * should happen often ...
- *
- * FIXME kill the now-dysfunctional queued urbs
- */
- if (rc != 0)
- fusbh200_err(fusbh200, "can't reschedule qh %p, err %d\n",
- qh, rc);
- }
-
- /* maybe turn off periodic schedule */
- --fusbh200->intr_count;
- disable_periodic(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int check_period (
- struct fusbh200_hcd *fusbh200,
- unsigned frame,
- unsigned uframe,
- unsigned period,
- unsigned usecs
-) {
- int claimed;
-
- /* complete split running into next frame?
- * given FSTN support, we could sometimes check...
- */
- if (uframe >= 8)
- return 0;
-
- /* convert "usecs we need" to "max already claimed" */
- usecs = fusbh200->uframe_periodic_max - usecs;
-
- /* we "know" 2 and 4 uframe intervals were rejected; so
- * for period 0, check _every_ microframe in the schedule.
- */
- if (unlikely (period == 0)) {
- do {
- for (uframe = 0; uframe < 7; uframe++) {
- claimed = periodic_usecs (fusbh200, frame, uframe);
- if (claimed > usecs)
- return 0;
- }
- } while ((frame += 1) < fusbh200->periodic_size);
-
- /* just check the specified uframe, at that period */
- } else {
- do {
- claimed = periodic_usecs (fusbh200, frame, uframe);
- if (claimed > usecs)
- return 0;
- } while ((frame += period) < fusbh200->periodic_size);
- }
-
- // success!
- return 1;
-}
-
-static int check_intr_schedule (
- struct fusbh200_hcd *fusbh200,
- unsigned frame,
- unsigned uframe,
- const struct fusbh200_qh *qh,
- __hc32 *c_maskp
-)
-{
- int retval = -ENOSPC;
- u8 mask = 0;
-
- if (qh->c_usecs && uframe >= 6) /* FSTN territory? */
- goto done;
-
- if (!check_period (fusbh200, frame, uframe, qh->period, qh->usecs))
- goto done;
- if (!qh->c_usecs) {
- retval = 0;
- *c_maskp = 0;
- goto done;
- }
-
- /* Make sure this tt's buffer is also available for CSPLITs.
- * We pessimize a bit; probably the typical full speed case
- * doesn't need the second CSPLIT.
- *
- * NOTE: both SPLIT and CSPLIT could be checked in just
- * one smart pass...
- */
- mask = 0x03 << (uframe + qh->gap_uf);
- *c_maskp = cpu_to_hc32(fusbh200, mask << 8);
-
- mask |= 1 << uframe;
- if (tt_no_collision (fusbh200, qh->period, qh->dev, frame, mask)) {
- if (!check_period (fusbh200, frame, uframe + qh->gap_uf + 1,
- qh->period, qh->c_usecs))
- goto done;
- if (!check_period (fusbh200, frame, uframe + qh->gap_uf,
- qh->period, qh->c_usecs))
- goto done;
- retval = 0;
- }
-done:
- return retval;
-}
-
-/* "first fit" scheduling policy used the first time through,
- * or when the previous schedule slot can't be re-used.
- */
-static int qh_schedule(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
- int status;
- unsigned uframe;
- __hc32 c_mask;
- unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */
- struct fusbh200_qh_hw *hw = qh->hw;
-
- qh_refresh(fusbh200, qh);
- hw->hw_next = FUSBH200_LIST_END(fusbh200);
- frame = qh->start;
-
- /* reuse the previous schedule slots, if we can */
- if (frame < qh->period) {
- uframe = ffs(hc32_to_cpup(fusbh200, &hw->hw_info2) & QH_SMASK);
- status = check_intr_schedule (fusbh200, frame, --uframe,
- qh, &c_mask);
- } else {
- uframe = 0;
- c_mask = 0;
- status = -ENOSPC;
- }
-
- /* else scan the schedule to find a group of slots such that all
- * uframes have enough periodic bandwidth available.
- */
- if (status) {
- /* "normal" case, uframing flexible except with splits */
- if (qh->period) {
- int i;
-
- for (i = qh->period; status && i > 0; --i) {
- frame = ++fusbh200->random_frame % qh->period;
- for (uframe = 0; uframe < 8; uframe++) {
- status = check_intr_schedule (fusbh200,
- frame, uframe, qh,
- &c_mask);
- if (status == 0)
- break;
- }
- }
-
- /* qh->period == 0 means every uframe */
- } else {
- frame = 0;
- status = check_intr_schedule (fusbh200, 0, 0, qh, &c_mask);
- }
- if (status)
- goto done;
- qh->start = frame;
-
- /* reset S-frame and (maybe) C-frame masks */
- hw->hw_info2 &= cpu_to_hc32(fusbh200, ~(QH_CMASK | QH_SMASK));
- hw->hw_info2 |= qh->period
- ? cpu_to_hc32(fusbh200, 1 << uframe)
- : cpu_to_hc32(fusbh200, QH_SMASK);
- hw->hw_info2 |= c_mask;
- } else
- fusbh200_dbg (fusbh200, "reused qh %p schedule\n", qh);
-
- /* stuff into the periodic schedule */
- qh_link_periodic(fusbh200, qh);
-done:
- return status;
-}
-
-static int intr_submit (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- struct list_head *qtd_list,
- gfp_t mem_flags
-) {
- unsigned epnum;
- unsigned long flags;
- struct fusbh200_qh *qh;
- int status;
- struct list_head empty;
-
- /* get endpoint and transfer/schedule data */
- epnum = urb->ep->desc.bEndpointAddress;
-
- spin_lock_irqsave (&fusbh200->lock, flags);
-
- if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
- status = -ESHUTDOWN;
- goto done_not_linked;
- }
- status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
- if (unlikely(status))
- goto done_not_linked;
-
- /* get qh and force any scheduling errors */
- INIT_LIST_HEAD (&empty);
- qh = qh_append_tds(fusbh200, urb, &empty, epnum, &urb->ep->hcpriv);
- if (qh == NULL) {
- status = -ENOMEM;
- goto done;
- }
- if (qh->qh_state == QH_STATE_IDLE) {
- if ((status = qh_schedule (fusbh200, qh)) != 0)
- goto done;
- }
-
- /* then queue the urb's tds to the qh */
- qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv);
- BUG_ON (qh == NULL);
-
- /* ... update usbfs periodic stats */
- fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs++;
-
-done:
- if (unlikely(status))
- usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
-done_not_linked:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- if (status)
- qtd_list_free (fusbh200, urb, qtd_list);
-
- return status;
-}
-
-static void scan_intr(struct fusbh200_hcd *fusbh200)
-{
- struct fusbh200_qh *qh;
-
- list_for_each_entry_safe(qh, fusbh200->qh_scan_next, &fusbh200->intr_qh_list,
- intr_node) {
- rescan:
- /* clean any finished work for this qh */
- if (!list_empty(&qh->qtd_list)) {
- int temp;
-
- /*
- * Unlinks could happen here; completion reporting
- * drops the lock. That's why fusbh200->qh_scan_next
- * always holds the next qh to scan; if the next qh
- * gets unlinked then fusbh200->qh_scan_next is adjusted
- * in qh_unlink_periodic().
- */
- temp = qh_completions(fusbh200, qh);
- if (unlikely(qh->needs_rescan ||
- (list_empty(&qh->qtd_list) &&
- qh->qh_state == QH_STATE_LINKED)))
- start_unlink_intr(fusbh200, qh);
- else if (temp != 0)
- goto rescan;
- }
- }
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* fusbh200_iso_stream ops work with both ITD and SITD */
-
-static struct fusbh200_iso_stream *
-iso_stream_alloc (gfp_t mem_flags)
-{
- struct fusbh200_iso_stream *stream;
-
- stream = kzalloc(sizeof *stream, mem_flags);
- if (likely (stream != NULL)) {
- INIT_LIST_HEAD(&stream->td_list);
- INIT_LIST_HEAD(&stream->free_list);
- stream->next_uframe = -1;
- }
- return stream;
-}
-
-static void
-iso_stream_init (
- struct fusbh200_hcd *fusbh200,
- struct fusbh200_iso_stream *stream,
- struct usb_device *dev,
- int pipe,
- unsigned interval
-)
-{
- u32 buf1;
- unsigned epnum, maxp;
- int is_input;
- long bandwidth;
- unsigned multi;
-
- /*
- * this might be a "high bandwidth" highspeed endpoint,
- * as encoded in the ep descriptor's wMaxPacket field
- */
- epnum = usb_pipeendpoint (pipe);
- is_input = usb_pipein (pipe) ? USB_DIR_IN : 0;
- maxp = usb_maxpacket(dev, pipe, !is_input);
- if (is_input) {
- buf1 = (1 << 11);
- } else {
- buf1 = 0;
- }
-
- maxp = max_packet(maxp);
- multi = hb_mult(maxp);
- buf1 |= maxp;
- maxp *= multi;
-
- stream->buf0 = cpu_to_hc32(fusbh200, (epnum << 8) | dev->devnum);
- stream->buf1 = cpu_to_hc32(fusbh200, buf1);
- stream->buf2 = cpu_to_hc32(fusbh200, multi);
-
- /* usbfs wants to report the average usecs per frame tied up
- * when transfers on this endpoint are scheduled ...
- */
- if (dev->speed == USB_SPEED_FULL) {
- interval <<= 3;
- stream->usecs = NS_TO_US(usb_calc_bus_time(dev->speed,
- is_input, 1, maxp));
- stream->usecs /= 8;
- } else {
- stream->highspeed = 1;
- stream->usecs = HS_USECS_ISO (maxp);
- }
- bandwidth = stream->usecs * 8;
- bandwidth /= interval;
-
- stream->bandwidth = bandwidth;
- stream->udev = dev;
- stream->bEndpointAddress = is_input | epnum;
- stream->interval = interval;
- stream->maxp = maxp;
-}
-
-static struct fusbh200_iso_stream *
-iso_stream_find (struct fusbh200_hcd *fusbh200, struct urb *urb)
-{
- unsigned epnum;
- struct fusbh200_iso_stream *stream;
- struct usb_host_endpoint *ep;
- unsigned long flags;
-
- epnum = usb_pipeendpoint (urb->pipe);
- if (usb_pipein(urb->pipe))
- ep = urb->dev->ep_in[epnum];
- else
- ep = urb->dev->ep_out[epnum];
-
- spin_lock_irqsave (&fusbh200->lock, flags);
- stream = ep->hcpriv;
-
- if (unlikely (stream == NULL)) {
- stream = iso_stream_alloc(GFP_ATOMIC);
- if (likely (stream != NULL)) {
- ep->hcpriv = stream;
- stream->ep = ep;
- iso_stream_init(fusbh200, stream, urb->dev, urb->pipe,
- urb->interval);
- }
-
- /* if dev->ep [epnum] is a QH, hw is set */
- } else if (unlikely (stream->hw != NULL)) {
- fusbh200_dbg (fusbh200, "dev %s ep%d%s, not iso??\n",
- urb->dev->devpath, epnum,
- usb_pipein(urb->pipe) ? "in" : "out");
- stream = NULL;
- }
-
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- return stream;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* fusbh200_iso_sched ops can be ITD-only or SITD-only */
-
-static struct fusbh200_iso_sched *
-iso_sched_alloc (unsigned packets, gfp_t mem_flags)
-{
- struct fusbh200_iso_sched *iso_sched;
- int size = sizeof *iso_sched;
-
- size += packets * sizeof (struct fusbh200_iso_packet);
- iso_sched = kzalloc(size, mem_flags);
- if (likely (iso_sched != NULL)) {
- INIT_LIST_HEAD (&iso_sched->td_list);
- }
- return iso_sched;
-}
-
-static inline void
-itd_sched_init(
- struct fusbh200_hcd *fusbh200,
- struct fusbh200_iso_sched *iso_sched,
- struct fusbh200_iso_stream *stream,
- struct urb *urb
-)
-{
- unsigned i;
- dma_addr_t dma = urb->transfer_dma;
-
- /* how many uframes are needed for these transfers */
- iso_sched->span = urb->number_of_packets * stream->interval;
-
- /* figure out per-uframe itd fields that we'll need later
- * when we fit new itds into the schedule.
- */
- for (i = 0; i < urb->number_of_packets; i++) {
- struct fusbh200_iso_packet *uframe = &iso_sched->packet [i];
- unsigned length;
- dma_addr_t buf;
- u32 trans;
-
- length = urb->iso_frame_desc [i].length;
- buf = dma + urb->iso_frame_desc [i].offset;
-
- trans = FUSBH200_ISOC_ACTIVE;
- trans |= buf & 0x0fff;
- if (unlikely (((i + 1) == urb->number_of_packets))
- && !(urb->transfer_flags & URB_NO_INTERRUPT))
- trans |= FUSBH200_ITD_IOC;
- trans |= length << 16;
- uframe->transaction = cpu_to_hc32(fusbh200, trans);
-
- /* might need to cross a buffer page within a uframe */
- uframe->bufp = (buf & ~(u64)0x0fff);
- buf += length;
- if (unlikely ((uframe->bufp != (buf & ~(u64)0x0fff))))
- uframe->cross = 1;
- }
-}
-
-static void
-iso_sched_free (
- struct fusbh200_iso_stream *stream,
- struct fusbh200_iso_sched *iso_sched
-)
-{
- if (!iso_sched)
- return;
- // caller must hold fusbh200->lock!
- list_splice (&iso_sched->td_list, &stream->free_list);
- kfree (iso_sched);
-}
-
-static int
-itd_urb_transaction (
- struct fusbh200_iso_stream *stream,
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- gfp_t mem_flags
-)
-{
- struct fusbh200_itd *itd;
- dma_addr_t itd_dma;
- int i;
- unsigned num_itds;
- struct fusbh200_iso_sched *sched;
- unsigned long flags;
-
- sched = iso_sched_alloc (urb->number_of_packets, mem_flags);
- if (unlikely (sched == NULL))
- return -ENOMEM;
-
- itd_sched_init(fusbh200, sched, stream, urb);
-
- if (urb->interval < 8)
- num_itds = 1 + (sched->span + 7) / 8;
- else
- num_itds = urb->number_of_packets;
-
- /* allocate/init ITDs */
- spin_lock_irqsave (&fusbh200->lock, flags);
- for (i = 0; i < num_itds; i++) {
-
- /*
- * Use iTDs from the free list, but not iTDs that may
- * still be in use by the hardware.
- */
- if (likely(!list_empty(&stream->free_list))) {
- itd = list_first_entry(&stream->free_list,
- struct fusbh200_itd, itd_list);
- if (itd->frame == fusbh200->now_frame)
- goto alloc_itd;
- list_del (&itd->itd_list);
- itd_dma = itd->itd_dma;
- } else {
- alloc_itd:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- itd = dma_pool_alloc (fusbh200->itd_pool, mem_flags,
- &itd_dma);
- spin_lock_irqsave (&fusbh200->lock, flags);
- if (!itd) {
- iso_sched_free(stream, sched);
- spin_unlock_irqrestore(&fusbh200->lock, flags);
- return -ENOMEM;
- }
- }
-
- memset (itd, 0, sizeof *itd);
- itd->itd_dma = itd_dma;
- list_add (&itd->itd_list, &sched->td_list);
- }
- spin_unlock_irqrestore (&fusbh200->lock, flags);
-
- /* temporarily store schedule info in hcpriv */
- urb->hcpriv = sched;
- urb->error_count = 0;
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline int
-itd_slot_ok (
- struct fusbh200_hcd *fusbh200,
- u32 mod,
- u32 uframe,
- u8 usecs,
- u32 period
-)
-{
- uframe %= period;
- do {
- /* can't commit more than uframe_periodic_max usec */
- if (periodic_usecs (fusbh200, uframe >> 3, uframe & 0x7)
- > (fusbh200->uframe_periodic_max - usecs))
- return 0;
-
- /* we know urb->interval is 2^N uframes */
- uframe += period;
- } while (uframe < mod);
- return 1;
-}
-
-/*
- * This scheduler plans almost as far into the future as it has actual
- * periodic schedule slots. (Affected by TUNE_FLS, which defaults to
- * "as small as possible" to be cache-friendlier.) That limits the size
- * transfers you can stream reliably; avoid more than 64 msec per urb.
- * Also avoid queue depths of less than fusbh200's worst irq latency (affected
- * by the per-urb URB_NO_INTERRUPT hint, the log2_irq_thresh module parameter,
- * and other factors); or more than about 230 msec total (for portability,
- * given FUSBH200_TUNE_FLS and the slop). Or, write a smarter scheduler!
- */
-
-#define SCHEDULE_SLOP 80 /* microframes */
-
-static int
-iso_stream_schedule (
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- struct fusbh200_iso_stream *stream
-)
-{
- u32 now, next, start, period, span;
- int status;
- unsigned mod = fusbh200->periodic_size << 3;
- struct fusbh200_iso_sched *sched = urb->hcpriv;
-
- period = urb->interval;
- span = sched->span;
-
- if (span > mod - SCHEDULE_SLOP) {
- fusbh200_dbg (fusbh200, "iso request %p too long\n", urb);
- status = -EFBIG;
- goto fail;
- }
-
- now = fusbh200_read_frame_index(fusbh200) & (mod - 1);
-
- /* Typical case: reuse current schedule, stream is still active.
- * Hopefully there are no gaps from the host falling behind
- * (irq delays etc), but if there are we'll take the next
- * slot in the schedule, implicitly assuming URB_ISO_ASAP.
- */
- if (likely (!list_empty (&stream->td_list))) {
- u32 excess;
-
- /* For high speed devices, allow scheduling within the
- * isochronous scheduling threshold. For full speed devices
- * and Intel PCI-based controllers, don't (work around for
- * Intel ICH9 bug).
- */
- if (!stream->highspeed && fusbh200->fs_i_thresh)
- next = now + fusbh200->i_thresh;
- else
- next = now;
-
- /* Fell behind (by up to twice the slop amount)?
- * We decide based on the time of the last currently-scheduled
- * slot, not the time of the next available slot.
- */
- excess = (stream->next_uframe - period - next) & (mod - 1);
- if (excess >= mod - 2 * SCHEDULE_SLOP)
- start = next + excess - mod + period *
- DIV_ROUND_UP(mod - excess, period);
- else
- start = next + excess + period;
- if (start - now >= mod) {
- fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n",
- urb, start - now - period, period,
- mod);
- status = -EFBIG;
- goto fail;
- }
- }
-
- /* need to schedule; when's the next (u)frame we could start?
- * this is bigger than fusbh200->i_thresh allows; scheduling itself
- * isn't free, the slop should handle reasonably slow cpus. it
- * can also help high bandwidth if the dma and irq loads don't
- * jump until after the queue is primed.
- */
- else {
- int done = 0;
- start = SCHEDULE_SLOP + (now & ~0x07);
-
- /* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */
-
- /* find a uframe slot with enough bandwidth.
- * Early uframes are more precious because full-speed
- * iso IN transfers can't use late uframes,
- * and therefore they should be allocated last.
- */
- next = start;
- start += period;
- do {
- start--;
- /* check schedule: enough space? */
- if (itd_slot_ok(fusbh200, mod, start,
- stream->usecs, period))
- done = 1;
- } while (start > next && !done);
-
- /* no room in the schedule */
- if (!done) {
- fusbh200_dbg(fusbh200, "iso resched full %p (now %d max %d)\n",
- urb, now, now + mod);
- status = -ENOSPC;
- goto fail;
- }
- }
-
- /* Tried to schedule too far into the future? */
- if (unlikely(start - now + span - period
- >= mod - 2 * SCHEDULE_SLOP)) {
- fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n",
- urb, start - now, span - period,
- mod - 2 * SCHEDULE_SLOP);
- status = -EFBIG;
- goto fail;
- }
-
- stream->next_uframe = start & (mod - 1);
-
- /* report high speed start in uframes; full speed, in frames */
- urb->start_frame = stream->next_uframe;
- if (!stream->highspeed)
- urb->start_frame >>= 3;
-
- /* Make sure scan_isoc() sees these */
- if (fusbh200->isoc_count == 0)
- fusbh200->next_frame = now >> 3;
- return 0;
-
- fail:
- iso_sched_free(stream, sched);
- urb->hcpriv = NULL;
- return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline void
-itd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_iso_stream *stream,
- struct fusbh200_itd *itd)
-{
- int i;
-
- /* it's been recently zeroed */
- itd->hw_next = FUSBH200_LIST_END(fusbh200);
- itd->hw_bufp [0] = stream->buf0;
- itd->hw_bufp [1] = stream->buf1;
- itd->hw_bufp [2] = stream->buf2;
-
- for (i = 0; i < 8; i++)
- itd->index[i] = -1;
-
- /* All other fields are filled when scheduling */
-}
-
-static inline void
-itd_patch(
- struct fusbh200_hcd *fusbh200,
- struct fusbh200_itd *itd,
- struct fusbh200_iso_sched *iso_sched,
- unsigned index,
- u16 uframe
-)
-{
- struct fusbh200_iso_packet *uf = &iso_sched->packet [index];
- unsigned pg = itd->pg;
-
- // BUG_ON (pg == 6 && uf->cross);
-
- uframe &= 0x07;
- itd->index [uframe] = index;
-
- itd->hw_transaction[uframe] = uf->transaction;
- itd->hw_transaction[uframe] |= cpu_to_hc32(fusbh200, pg << 12);
- itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, uf->bufp & ~(u32)0);
- itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(uf->bufp >> 32));
-
- /* iso_frame_desc[].offset must be strictly increasing */
- if (unlikely (uf->cross)) {
- u64 bufp = uf->bufp + 4096;
-
- itd->pg = ++pg;
- itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, bufp & ~(u32)0);
- itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(bufp >> 32));
- }
-}
-
-static inline void
-itd_link (struct fusbh200_hcd *fusbh200, unsigned frame, struct fusbh200_itd *itd)
-{
- union fusbh200_shadow *prev = &fusbh200->pshadow[frame];
- __hc32 *hw_p = &fusbh200->periodic[frame];
- union fusbh200_shadow here = *prev;
- __hc32 type = 0;
-
- /* skip any iso nodes which might belong to previous microframes */
- while (here.ptr) {
- type = Q_NEXT_TYPE(fusbh200, *hw_p);
- if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH))
- break;
- prev = periodic_next_shadow(fusbh200, prev, type);
- hw_p = shadow_next_periodic(fusbh200, &here, type);
- here = *prev;
- }
-
- itd->itd_next = here;
- itd->hw_next = *hw_p;
- prev->itd = itd;
- itd->frame = frame;
- wmb ();
- *hw_p = cpu_to_hc32(fusbh200, itd->itd_dma | Q_TYPE_ITD);
-}
-
-/* fit urb's itds into the selected schedule slot; activate as needed */
-static void itd_link_urb(
- struct fusbh200_hcd *fusbh200,
- struct urb *urb,
- unsigned mod,
- struct fusbh200_iso_stream *stream
-)
-{
- int packet;
- unsigned next_uframe, uframe, frame;
- struct fusbh200_iso_sched *iso_sched = urb->hcpriv;
- struct fusbh200_itd *itd;
-
- next_uframe = stream->next_uframe & (mod - 1);
-
- if (unlikely (list_empty(&stream->td_list))) {
- fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated
- += stream->bandwidth;
- fusbh200_dbg(fusbh200,
- "schedule devp %s ep%d%s-iso period %d start %d.%d\n",
- urb->dev->devpath, stream->bEndpointAddress & 0x0f,
- (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out",
- urb->interval,
- next_uframe >> 3, next_uframe & 0x7);
- }
-
- /* fill iTDs uframe by uframe */
- for (packet = 0, itd = NULL; packet < urb->number_of_packets; ) {
- if (itd == NULL) {
- /* ASSERT: we have all necessary itds */
- // BUG_ON (list_empty (&iso_sched->td_list));
-
- /* ASSERT: no itds for this endpoint in this uframe */
-
- itd = list_entry (iso_sched->td_list.next,
- struct fusbh200_itd, itd_list);
- list_move_tail (&itd->itd_list, &stream->td_list);
- itd->stream = stream;
- itd->urb = urb;
- itd_init (fusbh200, stream, itd);
- }
-
- uframe = next_uframe & 0x07;
- frame = next_uframe >> 3;
-
- itd_patch(fusbh200, itd, iso_sched, packet, uframe);
-
- next_uframe += stream->interval;
- next_uframe &= mod - 1;
- packet++;
-
- /* link completed itds into the schedule */
- if (((next_uframe >> 3) != frame)
- || packet == urb->number_of_packets) {
- itd_link(fusbh200, frame & (fusbh200->periodic_size - 1), itd);
- itd = NULL;
- }
- }
- stream->next_uframe = next_uframe;
-
- /* don't need that schedule data any more */
- iso_sched_free (stream, iso_sched);
- urb->hcpriv = NULL;
-
- ++fusbh200->isoc_count;
- enable_periodic(fusbh200);
-}
-
-#define ISO_ERRS (FUSBH200_ISOC_BUF_ERR | FUSBH200_ISOC_BABBLE | FUSBH200_ISOC_XACTERR)
-
-/* Process and recycle a completed ITD. Return true iff its urb completed,
- * and hence its completion callback probably added things to the hardware
- * schedule.
- *
- * Note that we carefully avoid recycling this descriptor until after any
- * completion callback runs, so that it won't be reused quickly. That is,
- * assuming (a) no more than two urbs per frame on this endpoint, and also
- * (b) only this endpoint's completions submit URBs. It seems some silicon
- * corrupts things if you reuse completed descriptors very quickly...
- */
-static bool itd_complete(struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd)
-{
- struct urb *urb = itd->urb;
- struct usb_iso_packet_descriptor *desc;
- u32 t;
- unsigned uframe;
- int urb_index = -1;
- struct fusbh200_iso_stream *stream = itd->stream;
- struct usb_device *dev;
- bool retval = false;
-
- /* for each uframe with a packet */
- for (uframe = 0; uframe < 8; uframe++) {
- if (likely (itd->index[uframe] == -1))
- continue;
- urb_index = itd->index[uframe];
- desc = &urb->iso_frame_desc [urb_index];
-
- t = hc32_to_cpup(fusbh200, &itd->hw_transaction [uframe]);
- itd->hw_transaction [uframe] = 0;
-
- /* report transfer status */
- if (unlikely (t & ISO_ERRS)) {
- urb->error_count++;
- if (t & FUSBH200_ISOC_BUF_ERR)
- desc->status = usb_pipein (urb->pipe)
- ? -ENOSR /* hc couldn't read */
- : -ECOMM; /* hc couldn't write */
- else if (t & FUSBH200_ISOC_BABBLE)
- desc->status = -EOVERFLOW;
- else /* (t & FUSBH200_ISOC_XACTERR) */
- desc->status = -EPROTO;
-
- /* HC need not update length with this error */
- if (!(t & FUSBH200_ISOC_BABBLE)) {
- desc->actual_length = fusbh200_itdlen(urb, desc, t);
- urb->actual_length += desc->actual_length;
- }
- } else if (likely ((t & FUSBH200_ISOC_ACTIVE) == 0)) {
- desc->status = 0;
- desc->actual_length = fusbh200_itdlen(urb, desc, t);
- urb->actual_length += desc->actual_length;
- } else {
- /* URB was too late */
- desc->status = -EXDEV;
- }
- }
-
- /* handle completion now? */
- if (likely ((urb_index + 1) != urb->number_of_packets))
- goto done;
-
- /* ASSERT: it's really the last itd for this urb
- list_for_each_entry (itd, &stream->td_list, itd_list)
- BUG_ON (itd->urb == urb);
- */
-
- /* give urb back to the driver; completion often (re)submits */
- dev = urb->dev;
- fusbh200_urb_done(fusbh200, urb, 0);
- retval = true;
- urb = NULL;
-
- --fusbh200->isoc_count;
- disable_periodic(fusbh200);
-
- if (unlikely(list_is_singular(&stream->td_list))) {
- fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated
- -= stream->bandwidth;
- fusbh200_dbg(fusbh200,
- "deschedule devp %s ep%d%s-iso\n",
- dev->devpath, stream->bEndpointAddress & 0x0f,
- (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out");
- }
-
-done:
- itd->urb = NULL;
-
- /* Add to the end of the free list for later reuse */
- list_move_tail(&itd->itd_list, &stream->free_list);
-
- /* Recycle the iTDs when the pipeline is empty (ep no longer in use) */
- if (list_empty(&stream->td_list)) {
- list_splice_tail_init(&stream->free_list,
- &fusbh200->cached_itd_list);
- start_free_itds(fusbh200);
- }
-
- return retval;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int itd_submit (struct fusbh200_hcd *fusbh200, struct urb *urb,
- gfp_t mem_flags)
-{
- int status = -EINVAL;
- unsigned long flags;
- struct fusbh200_iso_stream *stream;
-
- /* Get iso_stream head */
- stream = iso_stream_find (fusbh200, urb);
- if (unlikely (stream == NULL)) {
- fusbh200_dbg (fusbh200, "can't get iso stream\n");
- return -ENOMEM;
- }
- if (unlikely (urb->interval != stream->interval &&
- fusbh200_port_speed(fusbh200, 0) == USB_PORT_STAT_HIGH_SPEED)) {
- fusbh200_dbg (fusbh200, "can't change iso interval %d --> %d\n",
- stream->interval, urb->interval);
- goto done;
- }
-
-#ifdef FUSBH200_URB_TRACE
- fusbh200_dbg (fusbh200,
- "%s %s urb %p ep%d%s len %d, %d pkts %d uframes [%p]\n",
- __func__, urb->dev->devpath, urb,
- usb_pipeendpoint (urb->pipe),
- usb_pipein (urb->pipe) ? "in" : "out",
- urb->transfer_buffer_length,
- urb->number_of_packets, urb->interval,
- stream);
-#endif
-
- /* allocate ITDs w/o locking anything */
- status = itd_urb_transaction (stream, fusbh200, urb, mem_flags);
- if (unlikely (status < 0)) {
- fusbh200_dbg (fusbh200, "can't init itds\n");
- goto done;
- }
-
- /* schedule ... need to lock */
- spin_lock_irqsave (&fusbh200->lock, flags);
- if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
- status = -ESHUTDOWN;
- goto done_not_linked;
- }
- status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
- if (unlikely(status))
- goto done_not_linked;
- status = iso_stream_schedule(fusbh200, urb, stream);
- if (likely (status == 0))
- itd_link_urb (fusbh200, urb, fusbh200->periodic_size << 3, stream);
- else
- usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
- done_not_linked:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- done:
- return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void scan_isoc(struct fusbh200_hcd *fusbh200)
-{
- unsigned uf, now_frame, frame;
- unsigned fmask = fusbh200->periodic_size - 1;
- bool modified, live;
-
- /*
- * When running, scan from last scan point up to "now"
- * else clean up by scanning everything that's left.
- * Touches as few pages as possible: cache-friendly.
- */
- if (fusbh200->rh_state >= FUSBH200_RH_RUNNING) {
- uf = fusbh200_read_frame_index(fusbh200);
- now_frame = (uf >> 3) & fmask;
- live = true;
- } else {
- now_frame = (fusbh200->next_frame - 1) & fmask;
- live = false;
- }
- fusbh200->now_frame = now_frame;
-
- frame = fusbh200->next_frame;
- for (;;) {
- union fusbh200_shadow q, *q_p;
- __hc32 type, *hw_p;
-
-restart:
- /* scan each element in frame's queue for completions */
- q_p = &fusbh200->pshadow [frame];
- hw_p = &fusbh200->periodic [frame];
- q.ptr = q_p->ptr;
- type = Q_NEXT_TYPE(fusbh200, *hw_p);
- modified = false;
-
- while (q.ptr != NULL) {
- switch (hc32_to_cpu(fusbh200, type)) {
- case Q_TYPE_ITD:
- /* If this ITD is still active, leave it for
- * later processing ... check the next entry.
- * No need to check for activity unless the
- * frame is current.
- */
- if (frame == now_frame && live) {
- rmb();
- for (uf = 0; uf < 8; uf++) {
- if (q.itd->hw_transaction[uf] &
- ITD_ACTIVE(fusbh200))
- break;
- }
- if (uf < 8) {
- q_p = &q.itd->itd_next;
- hw_p = &q.itd->hw_next;
- type = Q_NEXT_TYPE(fusbh200,
- q.itd->hw_next);
- q = *q_p;
- break;
- }
- }
-
- /* Take finished ITDs out of the schedule
- * and process them: recycle, maybe report
- * URB completion. HC won't cache the
- * pointer for much longer, if at all.
- */
- *q_p = q.itd->itd_next;
- *hw_p = q.itd->hw_next;
- type = Q_NEXT_TYPE(fusbh200, q.itd->hw_next);
- wmb();
- modified = itd_complete (fusbh200, q.itd);
- q = *q_p;
- break;
- default:
- fusbh200_dbg(fusbh200, "corrupt type %d frame %d shadow %p\n",
- type, frame, q.ptr);
- // BUG ();
- /* FALL THROUGH */
- case Q_TYPE_QH:
- case Q_TYPE_FSTN:
- /* End of the iTDs and siTDs */
- q.ptr = NULL;
- break;
- }
-
- /* assume completion callbacks modify the queue */
- if (unlikely(modified && fusbh200->isoc_count > 0))
- goto restart;
- }
-
- /* Stop when we have reached the current frame */
- if (frame == now_frame)
- break;
- frame = (frame + 1) & fmask;
- }
- fusbh200->next_frame = now_frame;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * Display / Set uframe_periodic_max
- */
-static ssize_t show_uframe_periodic_max(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct fusbh200_hcd *fusbh200;
- int n;
-
- fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev)));
- n = scnprintf(buf, PAGE_SIZE, "%d\n", fusbh200->uframe_periodic_max);
- return n;
-}
-
-
-static ssize_t store_uframe_periodic_max(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct fusbh200_hcd *fusbh200;
- unsigned uframe_periodic_max;
- unsigned frame, uframe;
- unsigned short allocated_max;
- unsigned long flags;
- ssize_t ret;
-
- fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev)));
- if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
- return -EINVAL;
-
- if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
- fusbh200_info(fusbh200, "rejecting invalid request for "
- "uframe_periodic_max=%u\n", uframe_periodic_max);
- return -EINVAL;
- }
-
- ret = -EINVAL;
-
- /*
- * lock, so that our checking does not race with possible periodic
- * bandwidth allocation through submitting new urbs.
- */
- spin_lock_irqsave (&fusbh200->lock, flags);
-
- /*
- * for request to decrease max periodic bandwidth, we have to check
- * every microframe in the schedule to see whether the decrease is
- * possible.
- */
- if (uframe_periodic_max < fusbh200->uframe_periodic_max) {
- allocated_max = 0;
-
- for (frame = 0; frame < fusbh200->periodic_size; ++frame)
- for (uframe = 0; uframe < 7; ++uframe)
- allocated_max = max(allocated_max,
- periodic_usecs (fusbh200, frame, uframe));
-
- if (allocated_max > uframe_periodic_max) {
- fusbh200_info(fusbh200,
- "cannot decrease uframe_periodic_max because "
- "periodic bandwidth is already allocated "
- "(%u > %u)\n",
- allocated_max, uframe_periodic_max);
- goto out_unlock;
- }
- }
-
- /* increasing is always ok */
-
- fusbh200_info(fusbh200, "setting max periodic bandwidth to %u%% "
- "(== %u usec/uframe)\n",
- 100*uframe_periodic_max/125, uframe_periodic_max);
-
- if (uframe_periodic_max != 100)
- fusbh200_warn(fusbh200, "max periodic bandwidth set is non-standard\n");
-
- fusbh200->uframe_periodic_max = uframe_periodic_max;
- ret = count;
-
-out_unlock:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- return ret;
-}
-static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, store_uframe_periodic_max);
-
-
-static inline int create_sysfs_files(struct fusbh200_hcd *fusbh200)
-{
- struct device *controller = fusbh200_to_hcd(fusbh200)->self.controller;
- int i = 0;
-
- if (i)
- goto out;
-
- i = device_create_file(controller, &dev_attr_uframe_periodic_max);
-out:
- return i;
-}
-
-static inline void remove_sysfs_files(struct fusbh200_hcd *fusbh200)
-{
- struct device *controller = fusbh200_to_hcd(fusbh200)->self.controller;
-
- device_remove_file(controller, &dev_attr_uframe_periodic_max);
-}
-/*-------------------------------------------------------------------------*/
-
-/* On some systems, leaving remote wakeup enabled prevents system shutdown.
- * The firmware seems to think that powering off is a wakeup event!
- * This routine turns off remote wakeup and everything else, on all ports.
- */
-static void fusbh200_turn_off_all_ports(struct fusbh200_hcd *fusbh200)
-{
- u32 __iomem *status_reg = &fusbh200->regs->port_status;
-
- fusbh200_writel(fusbh200, PORT_RWC_BITS, status_reg);
-}
-
-/*
- * Halt HC, turn off all ports, and let the BIOS use the companion controllers.
- * Must be called with interrupts enabled and the lock not held.
- */
-static void fusbh200_silence_controller(struct fusbh200_hcd *fusbh200)
-{
- fusbh200_halt(fusbh200);
-
- spin_lock_irq(&fusbh200->lock);
- fusbh200->rh_state = FUSBH200_RH_HALTED;
- fusbh200_turn_off_all_ports(fusbh200);
- spin_unlock_irq(&fusbh200->lock);
-}
-
-/* fusbh200_shutdown kick in for silicon on any bus (not just pci, etc).
- * This forcibly disables dma and IRQs, helping kexec and other cases
- * where the next system software may expect clean state.
- */
-static void fusbh200_shutdown(struct usb_hcd *hcd)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd);
-
- spin_lock_irq(&fusbh200->lock);
- fusbh200->shutdown = true;
- fusbh200->rh_state = FUSBH200_RH_STOPPING;
- fusbh200->enabled_hrtimer_events = 0;
- spin_unlock_irq(&fusbh200->lock);
-
- fusbh200_silence_controller(fusbh200);
-
- hrtimer_cancel(&fusbh200->hrtimer);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * fusbh200_work is called from some interrupts, timers, and so on.
- * it calls driver completion functions, after dropping fusbh200->lock.
- */
-static void fusbh200_work (struct fusbh200_hcd *fusbh200)
-{
- /* another CPU may drop fusbh200->lock during a schedule scan while
- * it reports urb completions. this flag guards against bogus
- * attempts at re-entrant schedule scanning.
- */
- if (fusbh200->scanning) {
- fusbh200->need_rescan = true;
- return;
- }
- fusbh200->scanning = true;
-
- rescan:
- fusbh200->need_rescan = false;
- if (fusbh200->async_count)
- scan_async(fusbh200);
- if (fusbh200->intr_count > 0)
- scan_intr(fusbh200);
- if (fusbh200->isoc_count > 0)
- scan_isoc(fusbh200);
- if (fusbh200->need_rescan)
- goto rescan;
- fusbh200->scanning = false;
-
- /* the IO watchdog guards against hardware or driver bugs that
- * misplace IRQs, and should let us run completely without IRQs.
- * such lossage has been observed on both VT6202 and VT8235.
- */
- turn_on_io_watchdog(fusbh200);
-}
-
-/*
- * Called when the fusbh200_hcd module is removed.
- */
-static void fusbh200_stop (struct usb_hcd *hcd)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
-
- fusbh200_dbg (fusbh200, "stop\n");
-
- /* no more interrupts ... */
-
- spin_lock_irq(&fusbh200->lock);
- fusbh200->enabled_hrtimer_events = 0;
- spin_unlock_irq(&fusbh200->lock);
-
- fusbh200_quiesce(fusbh200);
- fusbh200_silence_controller(fusbh200);
- fusbh200_reset (fusbh200);
-
- hrtimer_cancel(&fusbh200->hrtimer);
- remove_sysfs_files(fusbh200);
- remove_debug_files (fusbh200);
-
- /* root hub is shut down separately (first, when possible) */
- spin_lock_irq (&fusbh200->lock);
- end_free_itds(fusbh200);
- spin_unlock_irq (&fusbh200->lock);
- fusbh200_mem_cleanup (fusbh200);
-
- fusbh200_dbg(fusbh200, "irq normal %ld err %ld iaa %ld (lost %ld)\n",
- fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa,
- fusbh200->stats.lost_iaa);
- fusbh200_dbg (fusbh200, "complete %ld unlink %ld\n",
- fusbh200->stats.complete, fusbh200->stats.unlink);
-
- dbg_status (fusbh200, "fusbh200_stop completed",
- fusbh200_readl(fusbh200, &fusbh200->regs->status));
-}
-
-/* one-time init, only for memory state */
-static int hcd_fusbh200_init(struct usb_hcd *hcd)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd);
- u32 temp;
- int retval;
- u32 hcc_params;
- struct fusbh200_qh_hw *hw;
-
- spin_lock_init(&fusbh200->lock);
-
- /*
- * keep io watchdog by default, those good HCDs could turn off it later
- */
- fusbh200->need_io_watchdog = 1;
-
- hrtimer_init(&fusbh200->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- fusbh200->hrtimer.function = fusbh200_hrtimer_func;
- fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT;
-
- hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
- /*
- * by default set standard 80% (== 100 usec/uframe) max periodic
- * bandwidth as required by USB 2.0
- */
- fusbh200->uframe_periodic_max = 100;
-
- /*
- * hw default: 1K periodic list heads, one per frame.
- * periodic_size can shrink by USBCMD update if hcc_params allows.
- */
- fusbh200->periodic_size = DEFAULT_I_TDPS;
- INIT_LIST_HEAD(&fusbh200->intr_qh_list);
- INIT_LIST_HEAD(&fusbh200->cached_itd_list);
-
- if (HCC_PGM_FRAMELISTLEN(hcc_params)) {
- /* periodic schedule size can be smaller than default */
- switch (FUSBH200_TUNE_FLS) {
- case 0: fusbh200->periodic_size = 1024; break;
- case 1: fusbh200->periodic_size = 512; break;
- case 2: fusbh200->periodic_size = 256; break;
- default: BUG();
- }
- }
- if ((retval = fusbh200_mem_init(fusbh200, GFP_KERNEL)) < 0)
- return retval;
-
- /* controllers may cache some of the periodic schedule ... */
- fusbh200->i_thresh = 2;
-
- /*
- * dedicate a qh for the async ring head, since we couldn't unlink
- * a 'real' qh without stopping the async schedule [4.8]. use it
- * as the 'reclamation list head' too.
- * its dummy is used in hw_alt_next of many tds, to prevent the qh
- * from automatically advancing to the next td after short reads.
- */
- fusbh200->async->qh_next.qh = NULL;
- hw = fusbh200->async->hw;
- hw->hw_next = QH_NEXT(fusbh200, fusbh200->async->qh_dma);
- hw->hw_info1 = cpu_to_hc32(fusbh200, QH_HEAD);
- hw->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT);
- hw->hw_qtd_next = FUSBH200_LIST_END(fusbh200);
- fusbh200->async->qh_state = QH_STATE_LINKED;
- hw->hw_alt_next = QTD_NEXT(fusbh200, fusbh200->async->dummy->qtd_dma);
-
- /* clear interrupt enables, set irq latency */
- if (log2_irq_thresh < 0 || log2_irq_thresh > 6)
- log2_irq_thresh = 0;
- temp = 1 << (16 + log2_irq_thresh);
- if (HCC_CANPARK(hcc_params)) {
- /* HW default park == 3, on hardware that supports it (like
- * NVidia and ALI silicon), maximizes throughput on the async
- * schedule by avoiding QH fetches between transfers.
- *
- * With fast usb storage devices and NForce2, "park" seems to
- * make problems: throughput reduction (!), data errors...
- */
- if (park) {
- park = min(park, (unsigned) 3);
- temp |= CMD_PARK;
- temp |= park << 8;
- }
- fusbh200_dbg(fusbh200, "park %d\n", park);
- }
- if (HCC_PGM_FRAMELISTLEN(hcc_params)) {
- /* periodic schedule size can be smaller than default */
- temp &= ~(3 << 2);
- temp |= (FUSBH200_TUNE_FLS << 2);
- }
- fusbh200->command = temp;
-
- /* Accept arbitrarily long scatter-gather lists */
- if (!(hcd->driver->flags & HCD_LOCAL_MEM))
- hcd->self.sg_tablesize = ~0;
- return 0;
-}
-
-/* start HC running; it's halted, hcd_fusbh200_init() has been run (once) */
-static int fusbh200_run (struct usb_hcd *hcd)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- u32 temp;
- u32 hcc_params;
-
- hcd->uses_new_polling = 1;
-
- /* EHCI spec section 4.1 */
-
- fusbh200_writel(fusbh200, fusbh200->periodic_dma, &fusbh200->regs->frame_list);
- fusbh200_writel(fusbh200, (u32)fusbh200->async->qh_dma, &fusbh200->regs->async_next);
-
- /*
- * hcc_params controls whether fusbh200->regs->segment must (!!!)
- * be used; it constrains QH/ITD/SITD and QTD locations.
- * pci_pool consistent memory always uses segment zero.
- * streaming mappings for I/O buffers, like pci_map_single(),
- * can return segments above 4GB, if the device allows.
- *
- * NOTE: the dma mask is visible through dma_supported(), so
- * drivers can pass this info along ... like NETIF_F_HIGHDMA,
- * Scsi_Host.highmem_io, and so forth. It's readonly to all
- * host side drivers though.
- */
- hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
- // Philips, Intel, and maybe others need CMD_RUN before the
- // root hub will detect new devices (why?); NEC doesn't
- fusbh200->command &= ~(CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
- fusbh200->command |= CMD_RUN;
- fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
- dbg_cmd (fusbh200, "init", fusbh200->command);
-
- /*
- * Start, enabling full USB 2.0 functionality ... usb 1.1 devices
- * are explicitly handed to companion controller(s), so no TT is
- * involved with the root hub. (Except where one is integrated,
- * and there's no companion controller unless maybe for USB OTG.)
- *
- * Turning on the CF flag will transfer ownership of all ports
- * from the companions to the EHCI controller. If any of the
- * companions are in the middle of a port reset at the time, it
- * could cause trouble. Write-locking ehci_cf_port_reset_rwsem
- * guarantees that no resets are in progress. After we set CF,
- * a short delay lets the hardware catch up; new resets shouldn't
- * be started before the port switching actions could complete.
- */
- down_write(&ehci_cf_port_reset_rwsem);
- fusbh200->rh_state = FUSBH200_RH_RUNNING;
- fusbh200_readl(fusbh200, &fusbh200->regs->command); /* unblock posted writes */
- msleep(5);
- up_write(&ehci_cf_port_reset_rwsem);
- fusbh200->last_periodic_enable = ktime_get_real();
-
- temp = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
- fusbh200_info (fusbh200,
- "USB %x.%x started, EHCI %x.%02x\n",
- ((fusbh200->sbrn & 0xf0)>>4), (fusbh200->sbrn & 0x0f),
- temp >> 8, temp & 0xff);
-
- fusbh200_writel(fusbh200, INTR_MASK,
- &fusbh200->regs->intr_enable); /* Turn On Interrupts */
-
- /* GRR this is run-once init(), being done every time the HC starts.
- * So long as they're part of class devices, we can't do it init()
- * since the class device isn't created that early.
- */
- create_debug_files(fusbh200);
- create_sysfs_files(fusbh200);
-
- return 0;
-}
-
-static int fusbh200_setup(struct usb_hcd *hcd)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd);
- int retval;
-
- fusbh200->regs = (void __iomem *)fusbh200->caps +
- HC_LENGTH(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
- dbg_hcs_params(fusbh200, "reset");
- dbg_hcc_params(fusbh200, "reset");
-
- /* cache this readonly data; minimize chip reads */
- fusbh200->hcs_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-
- fusbh200->sbrn = HCD_USB2;
-
- /* data structure init */
- retval = hcd_fusbh200_init(hcd);
- if (retval)
- return retval;
-
- retval = fusbh200_halt(fusbh200);
- if (retval)
- return retval;
-
- fusbh200_reset(fusbh200);
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static irqreturn_t fusbh200_irq (struct usb_hcd *hcd)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- u32 status, masked_status, pcd_status = 0, cmd;
- int bh;
-
- spin_lock (&fusbh200->lock);
-
- status = fusbh200_readl(fusbh200, &fusbh200->regs->status);
-
- /* e.g. cardbus physical eject */
- if (status == ~(u32) 0) {
- fusbh200_dbg (fusbh200, "device removed\n");
- goto dead;
- }
-
- /*
- * We don't use STS_FLR, but some controllers don't like it to
- * remain on, so mask it out along with the other status bits.
- */
- masked_status = status & (INTR_MASK | STS_FLR);
-
- /* Shared IRQ? */
- if (!masked_status || unlikely(fusbh200->rh_state == FUSBH200_RH_HALTED)) {
- spin_unlock(&fusbh200->lock);
- return IRQ_NONE;
- }
-
- /* clear (just) interrupts */
- fusbh200_writel(fusbh200, masked_status, &fusbh200->regs->status);
- cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command);
- bh = 0;
-
- /* normal [4.15.1.2] or error [4.15.1.1] completion */
- if (likely ((status & (STS_INT|STS_ERR)) != 0)) {
- if (likely ((status & STS_ERR) == 0))
- COUNT (fusbh200->stats.normal);
- else
- COUNT (fusbh200->stats.error);
- bh = 1;
- }
-
- /* complete the unlinking of some qh [4.15.2.3] */
- if (status & STS_IAA) {
-
- /* Turn off the IAA watchdog */
- fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_IAA_WATCHDOG);
-
- /*
- * Mild optimization: Allow another IAAD to reset the
- * hrtimer, if one occurs before the next expiration.
- * In theory we could always cancel the hrtimer, but
- * tests show that about half the time it will be reset
- * for some other event anyway.
- */
- if (fusbh200->next_hrtimer_event == FUSBH200_HRTIMER_IAA_WATCHDOG)
- ++fusbh200->next_hrtimer_event;
-
- /* guard against (alleged) silicon errata */
- if (cmd & CMD_IAAD)
- fusbh200_dbg(fusbh200, "IAA with IAAD still set?\n");
- if (fusbh200->async_iaa) {
- COUNT(fusbh200->stats.iaa);
- end_unlink_async(fusbh200);
- } else
- fusbh200_dbg(fusbh200, "IAA with nothing unlinked?\n");
- }
-
- /* remote wakeup [4.3.1] */
- if (status & STS_PCD) {
- int pstatus;
- u32 __iomem *status_reg = &fusbh200->regs->port_status;
-
- /* kick root hub later */
- pcd_status = status;
-
- /* resume root hub? */
- if (fusbh200->rh_state == FUSBH200_RH_SUSPENDED)
- usb_hcd_resume_root_hub(hcd);
-
- pstatus = fusbh200_readl(fusbh200, status_reg);
-
- if (test_bit(0, &fusbh200->suspended_ports) &&
- ((pstatus & PORT_RESUME) ||
- !(pstatus & PORT_SUSPEND)) &&
- (pstatus & PORT_PE) &&
- fusbh200->reset_done[0] == 0) {
-
- /* start 20 msec resume signaling from this port,
- * and make hub_wq collect PORT_STAT_C_SUSPEND to
- * stop that signaling. Use 5 ms extra for safety,
- * like usb_port_resume() does.
- */
- fusbh200->reset_done[0] = jiffies + msecs_to_jiffies(25);
- set_bit(0, &fusbh200->resuming_ports);
- fusbh200_dbg (fusbh200, "port 1 remote wakeup\n");
- mod_timer(&hcd->rh_timer, fusbh200->reset_done[0]);
- }
- }
-
- /* PCI errors [4.15.2.4] */
- if (unlikely ((status & STS_FATAL) != 0)) {
- fusbh200_err(fusbh200, "fatal error\n");
- dbg_cmd(fusbh200, "fatal", cmd);
- dbg_status(fusbh200, "fatal", status);
-dead:
- usb_hc_died(hcd);
-
- /* Don't let the controller do anything more */
- fusbh200->shutdown = true;
- fusbh200->rh_state = FUSBH200_RH_STOPPING;
- fusbh200->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE);
- fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
- fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
- fusbh200_handle_controller_death(fusbh200);
-
- /* Handle completions when the controller stops */
- bh = 0;
- }
-
- if (bh)
- fusbh200_work (fusbh200);
- spin_unlock (&fusbh200->lock);
- if (pcd_status)
- usb_hcd_poll_rh_status(hcd);
- return IRQ_HANDLED;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * non-error returns are a promise to giveback() the urb later
- * we drop ownership so next owner (or urb unlink) can get it
- *
- * urb + dev is in hcd.self.controller.urb_list
- * we're queueing TDs onto software and hardware lists
- *
- * hcd-specific init for hcpriv hasn't been done yet
- *
- * NOTE: control, bulk, and interrupt share the same code to append TDs
- * to a (possibly active) QH, and the same QH scanning code.
- */
-static int fusbh200_urb_enqueue (
- struct usb_hcd *hcd,
- struct urb *urb,
- gfp_t mem_flags
-) {
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- struct list_head qtd_list;
-
- INIT_LIST_HEAD (&qtd_list);
-
- switch (usb_pipetype (urb->pipe)) {
- case PIPE_CONTROL:
- /* qh_completions() code doesn't handle all the fault cases
- * in multi-TD control transfers. Even 1KB is rare anyway.
- */
- if (urb->transfer_buffer_length > (16 * 1024))
- return -EMSGSIZE;
- /* FALLTHROUGH */
- /* case PIPE_BULK: */
- default:
- if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags))
- return -ENOMEM;
- return submit_async(fusbh200, urb, &qtd_list, mem_flags);
-
- case PIPE_INTERRUPT:
- if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags))
- return -ENOMEM;
- return intr_submit(fusbh200, urb, &qtd_list, mem_flags);
-
- case PIPE_ISOCHRONOUS:
- return itd_submit (fusbh200, urb, mem_flags);
- }
-}
-
-/* remove from hardware lists
- * completions normally happen asynchronously
- */
-
-static int fusbh200_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- struct fusbh200_qh *qh;
- unsigned long flags;
- int rc;
-
- spin_lock_irqsave (&fusbh200->lock, flags);
- rc = usb_hcd_check_unlink_urb(hcd, urb, status);
- if (rc)
- goto done;
-
- switch (usb_pipetype (urb->pipe)) {
- // case PIPE_CONTROL:
- // case PIPE_BULK:
- default:
- qh = (struct fusbh200_qh *) urb->hcpriv;
- if (!qh)
- break;
- switch (qh->qh_state) {
- case QH_STATE_LINKED:
- case QH_STATE_COMPLETING:
- start_unlink_async(fusbh200, qh);
- break;
- case QH_STATE_UNLINK:
- case QH_STATE_UNLINK_WAIT:
- /* already started */
- break;
- case QH_STATE_IDLE:
- /* QH might be waiting for a Clear-TT-Buffer */
- qh_completions(fusbh200, qh);
- break;
- }
- break;
-
- case PIPE_INTERRUPT:
- qh = (struct fusbh200_qh *) urb->hcpriv;
- if (!qh)
- break;
- switch (qh->qh_state) {
- case QH_STATE_LINKED:
- case QH_STATE_COMPLETING:
- start_unlink_intr(fusbh200, qh);
- break;
- case QH_STATE_IDLE:
- qh_completions (fusbh200, qh);
- break;
- default:
- fusbh200_dbg (fusbh200, "bogus qh %p state %d\n",
- qh, qh->qh_state);
- goto done;
- }
- break;
-
- case PIPE_ISOCHRONOUS:
- // itd...
-
- // wait till next completion, do it then.
- // completion irqs can wait up to 1024 msec,
- break;
- }
-done:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- return rc;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// bulk qh holds the data toggle
-
-static void
-fusbh200_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- unsigned long flags;
- struct fusbh200_qh *qh, *tmp;
-
- /* ASSERT: any requests/urbs are being unlinked */
- /* ASSERT: nobody can be submitting urbs for this any more */
-
-rescan:
- spin_lock_irqsave (&fusbh200->lock, flags);
- qh = ep->hcpriv;
- if (!qh)
- goto done;
-
- /* endpoints can be iso streams. for now, we don't
- * accelerate iso completions ... so spin a while.
- */
- if (qh->hw == NULL) {
- struct fusbh200_iso_stream *stream = ep->hcpriv;
-
- if (!list_empty(&stream->td_list))
- goto idle_timeout;
-
- /* BUG_ON(!list_empty(&stream->free_list)); */
- kfree(stream);
- goto done;
- }
-
- if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
- qh->qh_state = QH_STATE_IDLE;
- switch (qh->qh_state) {
- case QH_STATE_LINKED:
- case QH_STATE_COMPLETING:
- for (tmp = fusbh200->async->qh_next.qh;
- tmp && tmp != qh;
- tmp = tmp->qh_next.qh)
- continue;
- /* periodic qh self-unlinks on empty, and a COMPLETING qh
- * may already be unlinked.
- */
- if (tmp)
- start_unlink_async(fusbh200, qh);
- /* FALL THROUGH */
- case QH_STATE_UNLINK: /* wait for hw to finish? */
- case QH_STATE_UNLINK_WAIT:
-idle_timeout:
- spin_unlock_irqrestore (&fusbh200->lock, flags);
- schedule_timeout_uninterruptible(1);
- goto rescan;
- case QH_STATE_IDLE: /* fully unlinked */
- if (qh->clearing_tt)
- goto idle_timeout;
- if (list_empty (&qh->qtd_list)) {
- qh_destroy(fusbh200, qh);
- break;
- }
- /* else FALL THROUGH */
- default:
- /* caller was supposed to have unlinked any requests;
- * that's not our job. just leak this memory.
- */
- fusbh200_err (fusbh200, "qh %p (#%02x) state %d%s\n",
- qh, ep->desc.bEndpointAddress, qh->qh_state,
- list_empty (&qh->qtd_list) ? "" : "(has tds)");
- break;
- }
- done:
- ep->hcpriv = NULL;
- spin_unlock_irqrestore (&fusbh200->lock, flags);
-}
-
-static void
-fusbh200_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd);
- struct fusbh200_qh *qh;
- int eptype = usb_endpoint_type(&ep->desc);
- int epnum = usb_endpoint_num(&ep->desc);
- int is_out = usb_endpoint_dir_out(&ep->desc);
- unsigned long flags;
-
- if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT)
- return;
-
- spin_lock_irqsave(&fusbh200->lock, flags);
- qh = ep->hcpriv;
-
- /* For Bulk and Interrupt endpoints we maintain the toggle state
- * in the hardware; the toggle bits in udev aren't used at all.
- * When an endpoint is reset by usb_clear_halt() we must reset
- * the toggle bit in the QH.
- */
- if (qh) {
- usb_settoggle(qh->dev, epnum, is_out, 0);
- if (!list_empty(&qh->qtd_list)) {
- WARN_ONCE(1, "clear_halt for a busy endpoint\n");
- } else if (qh->qh_state == QH_STATE_LINKED ||
- qh->qh_state == QH_STATE_COMPLETING) {
-
- /* The toggle value in the QH can't be updated
- * while the QH is active. Unlink it now;
- * re-linking will call qh_refresh().
- */
- if (eptype == USB_ENDPOINT_XFER_BULK)
- start_unlink_async(fusbh200, qh);
- else
- start_unlink_intr(fusbh200, qh);
- }
- }
- spin_unlock_irqrestore(&fusbh200->lock, flags);
-}
-
-static int fusbh200_get_frame (struct usb_hcd *hcd)
-{
- struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200 (hcd);
- return (fusbh200_read_frame_index(fusbh200) >> 3) % fusbh200->periodic_size;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * The EHCI in ChipIdea HDRC cannot be a separate module or device,
- * because its registers (and irq) are shared between host/gadget/otg
- * functions and in order to facilitate role switching we cannot
- * give the fusbh200 driver exclusive access to those.
- */
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR (DRIVER_AUTHOR);
-MODULE_LICENSE ("GPL");
-
-static const struct hc_driver fusbh200_fusbh200_hc_driver = {
- .description = hcd_name,
- .product_desc = "Faraday USB2.0 Host Controller",
- .hcd_priv_size = sizeof(struct fusbh200_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = fusbh200_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /*
- * basic lifecycle operations
- */
- .reset = hcd_fusbh200_init,
- .start = fusbh200_run,
- .stop = fusbh200_stop,
- .shutdown = fusbh200_shutdown,
-
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = fusbh200_urb_enqueue,
- .urb_dequeue = fusbh200_urb_dequeue,
- .endpoint_disable = fusbh200_endpoint_disable,
- .endpoint_reset = fusbh200_endpoint_reset,
-
- /*
- * scheduling support
- */
- .get_frame_number = fusbh200_get_frame,
-
- /*
- * root hub support
- */
- .hub_status_data = fusbh200_hub_status_data,
- .hub_control = fusbh200_hub_control,
- .bus_suspend = fusbh200_bus_suspend,
- .bus_resume = fusbh200_bus_resume,
-
- .relinquish_port = fusbh200_relinquish_port,
- .port_handed_over = fusbh200_port_handed_over,
-
- .clear_tt_buffer_complete = fusbh200_clear_tt_buffer_complete,
-};
-
-static void fusbh200_init(struct fusbh200_hcd *fusbh200)
-{
- u32 reg;
-
- reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmcsr);
- reg |= BMCSR_INT_POLARITY;
- reg &= ~BMCSR_VBUS_OFF;
- fusbh200_writel(fusbh200, reg, &fusbh200->regs->bmcsr);
-
- reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmier);
- fusbh200_writel(fusbh200, reg | BMIER_OVC_EN | BMIER_VBUS_ERR_EN,
- &fusbh200->regs->bmier);
-}
-
-/**
- * fusbh200_hcd_probe - initialize faraday FUSBH200 HCDs
- *
- * Allocates basic resources for this USB host controller, and
- * then invokes the start() method for the HCD associated with it
- * through the hotplug entry's driver_data.
- */
-static int fusbh200_hcd_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct usb_hcd *hcd;
- struct resource *res;
- int irq;
- int retval = -ENODEV;
- struct fusbh200_hcd *fusbh200;
-
- if (usb_disabled())
- return -ENODEV;
-
- pdev->dev.power.power_state = PMSG_ON;
-
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!res) {
- dev_err(dev,
- "Found HC with no IRQ. Check %s setup!\n",
- dev_name(dev));
- return -ENODEV;
- }
-
- irq = res->start;
-
- hcd = usb_create_hcd(&fusbh200_fusbh200_hc_driver, dev,
- dev_name(dev));
- if (!hcd) {
- dev_err(dev, "failed to create hcd with err %d\n", retval);
- retval = -ENOMEM;
- goto fail_create_hcd;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(dev,
- "Found HC with no register addr. Check %s setup!\n",
- dev_name(dev));
- retval = -ENODEV;
- goto fail_request_resource;
- }
-
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
- hcd->has_tt = 1;
-
- if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
- fusbh200_fusbh200_hc_driver.description)) {
- dev_dbg(dev, "controller already in use\n");
- retval = -EBUSY;
- goto fail_request_resource;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!res) {
- dev_err(dev,
- "Found HC with no register addr. Check %s setup!\n",
- dev_name(dev));
- retval = -ENODEV;
- goto fail_request_resource;
- }
-
- hcd->regs = ioremap_nocache(res->start, resource_size(res));
- if (hcd->regs == NULL) {
- dev_dbg(dev, "error mapping memory\n");
- retval = -EFAULT;
- goto fail_ioremap;
- }
-
- fusbh200 = hcd_to_fusbh200(hcd);
-
- fusbh200->caps = hcd->regs;
-
- retval = fusbh200_setup(hcd);
- if (retval)
- goto fail_add_hcd;
-
- fusbh200_init(fusbh200);
-
- retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
- if (retval) {
- dev_err(dev, "failed to add hcd with err %d\n", retval);
- goto fail_add_hcd;
- }
- device_wakeup_enable(hcd->self.controller);
-
- return retval;
-
-fail_add_hcd:
- iounmap(hcd->regs);
-fail_ioremap:
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-fail_request_resource:
- usb_put_hcd(hcd);
-fail_create_hcd:
- dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval);
- return retval;
-}
-
-/**
- * fusbh200_hcd_remove - shutdown processing for EHCI HCDs
- * @dev: USB Host Controller being removed
- *
- * Reverses the effect of fotg2xx_usb_hcd_probe(), first invoking
- * the HCD's stop() method. It is always called from a thread
- * context, normally "rmmod", "apmd", or something similar.
- */
-static int fusbh200_hcd_remove(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct usb_hcd *hcd = dev_get_drvdata(dev);
-
- if (!hcd)
- return 0;
-
- usb_remove_hcd(hcd);
- iounmap(hcd->regs);
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
- usb_put_hcd(hcd);
-
- return 0;
-}
-
-static struct platform_driver fusbh200_hcd_fusbh200_driver = {
- .driver = {
- .name = "fusbh200",
- },
- .probe = fusbh200_hcd_probe,
- .remove = fusbh200_hcd_remove,
-};
-
-static int __init fusbh200_hcd_init(void)
-{
- int retval = 0;
-
- if (usb_disabled())
- return -ENODEV;
-
- printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name);
- set_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
- if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) ||
- test_bit(USB_OHCI_LOADED, &usb_hcds_loaded))
- printk(KERN_WARNING "Warning! fusbh200_hcd should always be loaded"
- " before uhci_hcd and ohci_hcd, not after\n");
-
- pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n",
- hcd_name,
- sizeof(struct fusbh200_qh), sizeof(struct fusbh200_qtd),
- sizeof(struct fusbh200_itd));
-
- fusbh200_debug_root = debugfs_create_dir("fusbh200", usb_debug_root);
- if (!fusbh200_debug_root) {
- retval = -ENOENT;
- goto err_debug;
- }
-
- retval = platform_driver_register(&fusbh200_hcd_fusbh200_driver);
- if (retval < 0)
- goto clean;
- return retval;
-
- platform_driver_unregister(&fusbh200_hcd_fusbh200_driver);
-clean:
- debugfs_remove(fusbh200_debug_root);
- fusbh200_debug_root = NULL;
-err_debug:
- clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
- return retval;
-}
-module_init(fusbh200_hcd_init);
-
-static void __exit fusbh200_hcd_cleanup(void)
-{
- platform_driver_unregister(&fusbh200_hcd_fusbh200_driver);
- debugfs_remove(fusbh200_debug_root);
- clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
-}
-module_exit(fusbh200_hcd_cleanup);
diff --git a/kernel/drivers/usb/host/fusbh200.h b/kernel/drivers/usb/host/fusbh200.h
deleted file mode 100644
index d6e5b3d4a..000000000
--- a/kernel/drivers/usb/host/fusbh200.h
+++ /dev/null
@@ -1,675 +0,0 @@
-#ifndef __LINUX_FUSBH200_H
-#define __LINUX_FUSBH200_H
-
-#include <linux/usb/ehci-dbgp.h>
-
-/* definitions used for the EHCI driver */
-
-/*
- * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to
- * __leXX (normally) or __beXX (given FUSBH200_BIG_ENDIAN_DESC), depending on
- * the host controller implementation.
- *
- * To facilitate the strongest possible byte-order checking from "sparse"
- * and so on, we use __leXX unless that's not practical.
- */
-#define __hc32 __le32
-#define __hc16 __le16
-
-/* statistics can be kept for tuning/monitoring */
-struct fusbh200_stats {
- /* irq usage */
- unsigned long normal;
- unsigned long error;
- unsigned long iaa;
- unsigned long lost_iaa;
-
- /* termination of urbs from core */
- unsigned long complete;
- unsigned long unlink;
-};
-
-/* fusbh200_hcd->lock guards shared data against other CPUs:
- * fusbh200_hcd: async, unlink, periodic (and shadow), ...
- * usb_host_endpoint: hcpriv
- * fusbh200_qh: qh_next, qtd_list
- * fusbh200_qtd: qtd_list
- *
- * Also, hold this lock when talking to HC registers or
- * when updating hw_* fields in shared qh/qtd/... structures.
- */
-
-#define FUSBH200_MAX_ROOT_PORTS 1 /* see HCS_N_PORTS */
-
-/*
- * fusbh200_rh_state values of FUSBH200_RH_RUNNING or above mean that the
- * controller may be doing DMA. Lower values mean there's no DMA.
- */
-enum fusbh200_rh_state {
- FUSBH200_RH_HALTED,
- FUSBH200_RH_SUSPENDED,
- FUSBH200_RH_RUNNING,
- FUSBH200_RH_STOPPING
-};
-
-/*
- * Timer events, ordered by increasing delay length.
- * Always update event_delays_ns[] and event_handlers[] (defined in
- * ehci-timer.c) in parallel with this list.
- */
-enum fusbh200_hrtimer_event {
- FUSBH200_HRTIMER_POLL_ASS, /* Poll for async schedule off */
- FUSBH200_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */
- FUSBH200_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */
- FUSBH200_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */
- FUSBH200_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */
- FUSBH200_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */
- FUSBH200_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */
- FUSBH200_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */
- FUSBH200_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */
- FUSBH200_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */
- FUSBH200_HRTIMER_NUM_EVENTS /* Must come last */
-};
-#define FUSBH200_HRTIMER_NO_EVENT 99
-
-struct fusbh200_hcd { /* one per controller */
- /* timing support */
- enum fusbh200_hrtimer_event next_hrtimer_event;
- unsigned enabled_hrtimer_events;
- ktime_t hr_timeouts[FUSBH200_HRTIMER_NUM_EVENTS];
- struct hrtimer hrtimer;
-
- int PSS_poll_count;
- int ASS_poll_count;
- int died_poll_count;
-
- /* glue to PCI and HCD framework */
- struct fusbh200_caps __iomem *caps;
- struct fusbh200_regs __iomem *regs;
- struct ehci_dbg_port __iomem *debug;
-
- __u32 hcs_params; /* cached register copy */
- spinlock_t lock;
- enum fusbh200_rh_state rh_state;
-
- /* general schedule support */
- bool scanning:1;
- bool need_rescan:1;
- bool intr_unlinking:1;
- bool async_unlinking:1;
- bool shutdown:1;
- struct fusbh200_qh *qh_scan_next;
-
- /* async schedule support */
- struct fusbh200_qh *async;
- struct fusbh200_qh *dummy; /* For AMD quirk use */
- struct fusbh200_qh *async_unlink;
- struct fusbh200_qh *async_unlink_last;
- struct fusbh200_qh *async_iaa;
- unsigned async_unlink_cycle;
- unsigned async_count; /* async activity count */
-
- /* periodic schedule support */
-#define DEFAULT_I_TDPS 1024 /* some HCs can do less */
- unsigned periodic_size;
- __hc32 *periodic; /* hw periodic table */
- dma_addr_t periodic_dma;
- struct list_head intr_qh_list;
- unsigned i_thresh; /* uframes HC might cache */
-
- union fusbh200_shadow *pshadow; /* mirror hw periodic table */
- struct fusbh200_qh *intr_unlink;
- struct fusbh200_qh *intr_unlink_last;
- unsigned intr_unlink_cycle;
- unsigned now_frame; /* frame from HC hardware */
- unsigned next_frame; /* scan periodic, start here */
- unsigned intr_count; /* intr activity count */
- unsigned isoc_count; /* isoc activity count */
- unsigned periodic_count; /* periodic activity count */
- unsigned uframe_periodic_max; /* max periodic time per uframe */
-
-
- /* list of itds completed while now_frame was still active */
- struct list_head cached_itd_list;
- struct fusbh200_itd *last_itd_to_free;
-
- /* per root hub port */
- unsigned long reset_done [FUSBH200_MAX_ROOT_PORTS];
-
- /* bit vectors (one bit per port) */
- unsigned long bus_suspended; /* which ports were
- already suspended at the start of a bus suspend */
- unsigned long companion_ports; /* which ports are
- dedicated to the companion controller */
- unsigned long owned_ports; /* which ports are
- owned by the companion during a bus suspend */
- unsigned long port_c_suspend; /* which ports have
- the change-suspend feature turned on */
- unsigned long suspended_ports; /* which ports are
- suspended */
- unsigned long resuming_ports; /* which ports have
- started to resume */
-
- /* per-HC memory pools (could be per-bus, but ...) */
- struct dma_pool *qh_pool; /* qh per active urb */
- struct dma_pool *qtd_pool; /* one or more per qh */
- struct dma_pool *itd_pool; /* itd per iso urb */
-
- unsigned random_frame;
- unsigned long next_statechange;
- ktime_t last_periodic_enable;
- u32 command;
-
- /* SILICON QUIRKS */
- unsigned need_io_watchdog:1;
- unsigned fs_i_thresh:1; /* Intel iso scheduling */
-
- u8 sbrn; /* packed release number */
-
- /* irq statistics */
- struct fusbh200_stats stats;
-# define COUNT(x) do { (x)++; } while (0)
-
- /* debug files */
- struct dentry *debug_dir;
-};
-
-/* convert between an HCD pointer and the corresponding FUSBH200_HCD */
-static inline struct fusbh200_hcd *hcd_to_fusbh200 (struct usb_hcd *hcd)
-{
- return (struct fusbh200_hcd *) (hcd->hcd_priv);
-}
-static inline struct usb_hcd *fusbh200_to_hcd (struct fusbh200_hcd *fusbh200)
-{
- return container_of ((void *) fusbh200, struct usb_hcd, hcd_priv);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
-
-/* Section 2.2 Host Controller Capability Registers */
-struct fusbh200_caps {
- /* these fields are specified as 8 and 16 bit registers,
- * but some hosts can't perform 8 or 16 bit PCI accesses.
- * some hosts treat caplength and hciversion as parts of a 32-bit
- * register, others treat them as two separate registers, this
- * affects the memory map for big endian controllers.
- */
- u32 hc_capbase;
-#define HC_LENGTH(fusbh200, p) (0x00ff&((p) >> /* bits 7:0 / offset 00h */ \
- (fusbh200_big_endian_capbase(fusbh200) ? 24 : 0)))
-#define HC_VERSION(fusbh200, p) (0xffff&((p) >> /* bits 31:16 / offset 02h */ \
- (fusbh200_big_endian_capbase(fusbh200) ? 0 : 16)))
- u32 hcs_params; /* HCSPARAMS - offset 0x4 */
-#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */
-
- u32 hcc_params; /* HCCPARAMS - offset 0x8 */
-#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */
-#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/
- u8 portroute[8]; /* nibbles for routing - offset 0xC */
-};
-
-
-/* Section 2.3 Host Controller Operational Registers */
-struct fusbh200_regs {
-
- /* USBCMD: offset 0x00 */
- u32 command;
-
-/* EHCI 1.1 addendum */
-/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */
-#define CMD_PARK (1<<11) /* enable "park" on async qh */
-#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */
-#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */
-#define CMD_ASE (1<<5) /* async schedule enable */
-#define CMD_PSE (1<<4) /* periodic schedule enable */
-/* 3:2 is periodic frame list size */
-#define CMD_RESET (1<<1) /* reset HC not bus */
-#define CMD_RUN (1<<0) /* start/stop HC */
-
- /* USBSTS: offset 0x04 */
- u32 status;
-#define STS_ASS (1<<15) /* Async Schedule Status */
-#define STS_PSS (1<<14) /* Periodic Schedule Status */
-#define STS_RECL (1<<13) /* Reclamation */
-#define STS_HALT (1<<12) /* Not running (any reason) */
-/* some bits reserved */
- /* these STS_* flags are also intr_enable bits (USBINTR) */
-#define STS_IAA (1<<5) /* Interrupted on async advance */
-#define STS_FATAL (1<<4) /* such as some PCI access errors */
-#define STS_FLR (1<<3) /* frame list rolled over */
-#define STS_PCD (1<<2) /* port change detect */
-#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */
-#define STS_INT (1<<0) /* "normal" completion (short, ...) */
-
- /* USBINTR: offset 0x08 */
- u32 intr_enable;
-
- /* FRINDEX: offset 0x0C */
- u32 frame_index; /* current microframe number */
- /* CTRLDSSEGMENT: offset 0x10 */
- u32 segment; /* address bits 63:32 if needed */
- /* PERIODICLISTBASE: offset 0x14 */
- u32 frame_list; /* points to periodic list */
- /* ASYNCLISTADDR: offset 0x18 */
- u32 async_next; /* address of next async queue head */
-
- u32 reserved1;
- /* PORTSC: offset 0x20 */
- u32 port_status;
-/* 31:23 reserved */
-#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */
-#define PORT_RESET (1<<8) /* reset port */
-#define PORT_SUSPEND (1<<7) /* suspend port */
-#define PORT_RESUME (1<<6) /* resume it */
-#define PORT_PEC (1<<3) /* port enable change */
-#define PORT_PE (1<<2) /* port enable */
-#define PORT_CSC (1<<1) /* connect status change */
-#define PORT_CONNECT (1<<0) /* device connected */
-#define PORT_RWC_BITS (PORT_CSC | PORT_PEC)
-
- u32 reserved2[3];
-
- /* BMCSR: offset 0x30 */
- u32 bmcsr; /* Bus Moniter Control/Status Register */
-#define BMCSR_HOST_SPD_TYP (3<<9)
-#define BMCSR_VBUS_OFF (1<<4)
-#define BMCSR_INT_POLARITY (1<<3)
-
- /* BMISR: offset 0x34 */
- u32 bmisr; /* Bus Moniter Interrupt Status Register*/
-#define BMISR_OVC (1<<1)
-
- /* BMIER: offset 0x38 */
- u32 bmier; /* Bus Moniter Interrupt Enable Register */
-#define BMIER_OVC_EN (1<<1)
-#define BMIER_VBUS_ERR_EN (1<<0)
-};
-
-/*-------------------------------------------------------------------------*/
-
-#define QTD_NEXT(fusbh200, dma) cpu_to_hc32(fusbh200, (u32)dma)
-
-/*
- * EHCI Specification 0.95 Section 3.5
- * QTD: describe data transfer components (buffer, direction, ...)
- * See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram".
- *
- * These are associated only with "QH" (Queue Head) structures,
- * used with control, bulk, and interrupt transfers.
- */
-struct fusbh200_qtd {
- /* first part defined by EHCI spec */
- __hc32 hw_next; /* see EHCI 3.5.1 */
- __hc32 hw_alt_next; /* see EHCI 3.5.2 */
- __hc32 hw_token; /* see EHCI 3.5.3 */
-#define QTD_TOGGLE (1 << 31) /* data toggle */
-#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff)
-#define QTD_IOC (1 << 15) /* interrupt on complete */
-#define QTD_CERR(tok) (((tok)>>10) & 0x3)
-#define QTD_PID(tok) (((tok)>>8) & 0x3)
-#define QTD_STS_ACTIVE (1 << 7) /* HC may execute this */
-#define QTD_STS_HALT (1 << 6) /* halted on error */
-#define QTD_STS_DBE (1 << 5) /* data buffer error (in HC) */
-#define QTD_STS_BABBLE (1 << 4) /* device was babbling (qtd halted) */
-#define QTD_STS_XACT (1 << 3) /* device gave illegal response */
-#define QTD_STS_MMF (1 << 2) /* incomplete split transaction */
-#define QTD_STS_STS (1 << 1) /* split transaction state */
-#define QTD_STS_PING (1 << 0) /* issue PING? */
-
-#define ACTIVE_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_ACTIVE)
-#define HALT_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_HALT)
-#define STATUS_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_STS)
-
- __hc32 hw_buf [5]; /* see EHCI 3.5.4 */
- __hc32 hw_buf_hi [5]; /* Appendix B */
-
- /* the rest is HCD-private */
- dma_addr_t qtd_dma; /* qtd address */
- struct list_head qtd_list; /* sw qtd list */
- struct urb *urb; /* qtd's urb */
- size_t length; /* length of buffer */
-} __attribute__ ((aligned (32)));
-
-/* mask NakCnt+T in qh->hw_alt_next */
-#define QTD_MASK(fusbh200) cpu_to_hc32 (fusbh200, ~0x1f)
-
-#define IS_SHORT_READ(token) (QTD_LENGTH (token) != 0 && QTD_PID (token) == 1)
-
-/*-------------------------------------------------------------------------*/
-
-/* type tag from {qh,itd,fstn}->hw_next */
-#define Q_NEXT_TYPE(fusbh200,dma) ((dma) & cpu_to_hc32(fusbh200, 3 << 1))
-
-/*
- * Now the following defines are not converted using the
- * cpu_to_le32() macro anymore, since we have to support
- * "dynamic" switching between be and le support, so that the driver
- * can be used on one system with SoC EHCI controller using big-endian
- * descriptors as well as a normal little-endian PCI EHCI controller.
- */
-/* values for that type tag */
-#define Q_TYPE_ITD (0 << 1)
-#define Q_TYPE_QH (1 << 1)
-#define Q_TYPE_SITD (2 << 1)
-#define Q_TYPE_FSTN (3 << 1)
-
-/* next async queue entry, or pointer to interrupt/periodic QH */
-#define QH_NEXT(fusbh200,dma) (cpu_to_hc32(fusbh200, (((u32)dma)&~0x01f)|Q_TYPE_QH))
-
-/* for periodic/async schedules and qtd lists, mark end of list */
-#define FUSBH200_LIST_END(fusbh200) cpu_to_hc32(fusbh200, 1) /* "null pointer" to hw */
-
-/*
- * Entries in periodic shadow table are pointers to one of four kinds
- * of data structure. That's dictated by the hardware; a type tag is
- * encoded in the low bits of the hardware's periodic schedule. Use
- * Q_NEXT_TYPE to get the tag.
- *
- * For entries in the async schedule, the type tag always says "qh".
- */
-union fusbh200_shadow {
- struct fusbh200_qh *qh; /* Q_TYPE_QH */
- struct fusbh200_itd *itd; /* Q_TYPE_ITD */
- struct fusbh200_fstn *fstn; /* Q_TYPE_FSTN */
- __hc32 *hw_next; /* (all types) */
- void *ptr;
-};
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI Specification 0.95 Section 3.6
- * QH: describes control/bulk/interrupt endpoints
- * See Fig 3-7 "Queue Head Structure Layout".
- *
- * These appear in both the async and (for interrupt) periodic schedules.
- */
-
-/* first part defined by EHCI spec */
-struct fusbh200_qh_hw {
- __hc32 hw_next; /* see EHCI 3.6.1 */
- __hc32 hw_info1; /* see EHCI 3.6.2 */
-#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */
-#define QH_HEAD (1 << 15) /* Head of async reclamation list */
-#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */
-#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */
-#define QH_LOW_SPEED (1 << 12)
-#define QH_FULL_SPEED (0 << 12)
-#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */
- __hc32 hw_info2; /* see EHCI 3.6.2 */
-#define QH_SMASK 0x000000ff
-#define QH_CMASK 0x0000ff00
-#define QH_HUBADDR 0x007f0000
-#define QH_HUBPORT 0x3f800000
-#define QH_MULT 0xc0000000
- __hc32 hw_current; /* qtd list - see EHCI 3.6.4 */
-
- /* qtd overlay (hardware parts of a struct fusbh200_qtd) */
- __hc32 hw_qtd_next;
- __hc32 hw_alt_next;
- __hc32 hw_token;
- __hc32 hw_buf [5];
- __hc32 hw_buf_hi [5];
-} __attribute__ ((aligned(32)));
-
-struct fusbh200_qh {
- struct fusbh200_qh_hw *hw; /* Must come first */
- /* the rest is HCD-private */
- dma_addr_t qh_dma; /* address of qh */
- union fusbh200_shadow qh_next; /* ptr to qh; or periodic */
- struct list_head qtd_list; /* sw qtd list */
- struct list_head intr_node; /* list of intr QHs */
- struct fusbh200_qtd *dummy;
- struct fusbh200_qh *unlink_next; /* next on unlink list */
-
- unsigned unlink_cycle;
-
- u8 needs_rescan; /* Dequeue during giveback */
- u8 qh_state;
-#define QH_STATE_LINKED 1 /* HC sees this */
-#define QH_STATE_UNLINK 2 /* HC may still see this */
-#define QH_STATE_IDLE 3 /* HC doesn't see this */
-#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on unlink q */
-#define QH_STATE_COMPLETING 5 /* don't touch token.HALT */
-
- u8 xacterrs; /* XactErr retry counter */
-#define QH_XACTERR_MAX 32 /* XactErr retry limit */
-
- /* periodic schedule info */
- u8 usecs; /* intr bandwidth */
- u8 gap_uf; /* uframes split/csplit gap */
- u8 c_usecs; /* ... split completion bw */
- u16 tt_usecs; /* tt downstream bandwidth */
- unsigned short period; /* polling interval */
- unsigned short start; /* where polling starts */
-#define NO_FRAME ((unsigned short)~0) /* pick new start */
-
- struct usb_device *dev; /* access to TT */
- unsigned is_out:1; /* bulk or intr OUT */
- unsigned clearing_tt:1; /* Clear-TT-Buf in progress */
-};
-
-/*-------------------------------------------------------------------------*/
-
-/* description of one iso transaction (up to 3 KB data if highspeed) */
-struct fusbh200_iso_packet {
- /* These will be copied to iTD when scheduling */
- u64 bufp; /* itd->hw_bufp{,_hi}[pg] |= */
- __hc32 transaction; /* itd->hw_transaction[i] |= */
- u8 cross; /* buf crosses pages */
- /* for full speed OUT splits */
- u32 buf1;
-};
-
-/* temporary schedule data for packets from iso urbs (both speeds)
- * each packet is one logical usb transaction to the device (not TT),
- * beginning at stream->next_uframe
- */
-struct fusbh200_iso_sched {
- struct list_head td_list;
- unsigned span;
- struct fusbh200_iso_packet packet [0];
-};
-
-/*
- * fusbh200_iso_stream - groups all (s)itds for this endpoint.
- * acts like a qh would, if EHCI had them for ISO.
- */
-struct fusbh200_iso_stream {
- /* first field matches fusbh200_hq, but is NULL */
- struct fusbh200_qh_hw *hw;
-
- u8 bEndpointAddress;
- u8 highspeed;
- struct list_head td_list; /* queued itds */
- struct list_head free_list; /* list of unused itds */
- struct usb_device *udev;
- struct usb_host_endpoint *ep;
-
- /* output of (re)scheduling */
- int next_uframe;
- __hc32 splits;
-
- /* the rest is derived from the endpoint descriptor,
- * trusting urb->interval == f(epdesc->bInterval) and
- * including the extra info for hw_bufp[0..2]
- */
- u8 usecs, c_usecs;
- u16 interval;
- u16 tt_usecs;
- u16 maxp;
- u16 raw_mask;
- unsigned bandwidth;
-
- /* This is used to initialize iTD's hw_bufp fields */
- __hc32 buf0;
- __hc32 buf1;
- __hc32 buf2;
-
- /* this is used to initialize sITD's tt info */
- __hc32 address;
-};
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI Specification 0.95 Section 3.3
- * Fig 3-4 "Isochronous Transaction Descriptor (iTD)"
- *
- * Schedule records for high speed iso xfers
- */
-struct fusbh200_itd {
- /* first part defined by EHCI spec */
- __hc32 hw_next; /* see EHCI 3.3.1 */
- __hc32 hw_transaction [8]; /* see EHCI 3.3.2 */
-#define FUSBH200_ISOC_ACTIVE (1<<31) /* activate transfer this slot */
-#define FUSBH200_ISOC_BUF_ERR (1<<30) /* Data buffer error */
-#define FUSBH200_ISOC_BABBLE (1<<29) /* babble detected */
-#define FUSBH200_ISOC_XACTERR (1<<28) /* XactErr - transaction error */
-#define FUSBH200_ITD_LENGTH(tok) (((tok)>>16) & 0x0fff)
-#define FUSBH200_ITD_IOC (1 << 15) /* interrupt on complete */
-
-#define ITD_ACTIVE(fusbh200) cpu_to_hc32(fusbh200, FUSBH200_ISOC_ACTIVE)
-
- __hc32 hw_bufp [7]; /* see EHCI 3.3.3 */
- __hc32 hw_bufp_hi [7]; /* Appendix B */
-
- /* the rest is HCD-private */
- dma_addr_t itd_dma; /* for this itd */
- union fusbh200_shadow itd_next; /* ptr to periodic q entry */
-
- struct urb *urb;
- struct fusbh200_iso_stream *stream; /* endpoint's queue */
- struct list_head itd_list; /* list of stream's itds */
-
- /* any/all hw_transactions here may be used by that urb */
- unsigned frame; /* where scheduled */
- unsigned pg;
- unsigned index[8]; /* in urb->iso_frame_desc */
-} __attribute__ ((aligned (32)));
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI Specification 0.96 Section 3.7
- * Periodic Frame Span Traversal Node (FSTN)
- *
- * Manages split interrupt transactions (using TT) that span frame boundaries
- * into uframes 0/1; see 4.12.2.2. In those uframes, a "save place" FSTN
- * makes the HC jump (back) to a QH to scan for fs/ls QH completions until
- * it hits a "restore" FSTN; then it returns to finish other uframe 0/1 work.
- */
-struct fusbh200_fstn {
- __hc32 hw_next; /* any periodic q entry */
- __hc32 hw_prev; /* qh or FUSBH200_LIST_END */
-
- /* the rest is HCD-private */
- dma_addr_t fstn_dma;
- union fusbh200_shadow fstn_next; /* ptr to periodic q entry */
-} __attribute__ ((aligned (32)));
-
-/*-------------------------------------------------------------------------*/
-
-/* Prepare the PORTSC wakeup flags during controller suspend/resume */
-
-#define fusbh200_prepare_ports_for_controller_suspend(fusbh200, do_wakeup) \
- fusbh200_adjust_port_wakeup_flags(fusbh200, true, do_wakeup);
-
-#define fusbh200_prepare_ports_for_controller_resume(fusbh200) \
- fusbh200_adjust_port_wakeup_flags(fusbh200, false, false);
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Some EHCI controllers have a Transaction Translator built into the
- * root hub. This is a non-standard feature. Each controller will need
- * to add code to the following inline functions, and call them as
- * needed (mostly in root hub code).
- */
-
-static inline unsigned int
-fusbh200_get_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc)
-{
- return (readl(&fusbh200->regs->bmcsr)
- & BMCSR_HOST_SPD_TYP) >> 9;
-}
-
-/* Returns the speed of a device attached to a port on the root hub. */
-static inline unsigned int
-fusbh200_port_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc)
-{
- switch (fusbh200_get_speed(fusbh200, portsc)) {
- case 0:
- return 0;
- case 1:
- return USB_PORT_STAT_LOW_SPEED;
- case 2:
- default:
- return USB_PORT_STAT_HIGH_SPEED;
- }
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define fusbh200_has_fsl_portno_bug(e) (0)
-
-/*
- * While most USB host controllers implement their registers in
- * little-endian format, a minority (celleb companion chip) implement
- * them in big endian format.
- *
- * This attempts to support either format at compile time without a
- * runtime penalty, or both formats with the additional overhead
- * of checking a flag bit.
- *
- */
-
-#define fusbh200_big_endian_mmio(e) 0
-#define fusbh200_big_endian_capbase(e) 0
-
-static inline unsigned int fusbh200_readl(const struct fusbh200_hcd *fusbh200,
- __u32 __iomem * regs)
-{
- return readl(regs);
-}
-
-static inline void fusbh200_writel(const struct fusbh200_hcd *fusbh200,
- const unsigned int val, __u32 __iomem *regs)
-{
- writel(val, regs);
-}
-
-/* cpu to fusbh200 */
-static inline __hc32 cpu_to_hc32 (const struct fusbh200_hcd *fusbh200, const u32 x)
-{
- return cpu_to_le32(x);
-}
-
-/* fusbh200 to cpu */
-static inline u32 hc32_to_cpu (const struct fusbh200_hcd *fusbh200, const __hc32 x)
-{
- return le32_to_cpu(x);
-}
-
-static inline u32 hc32_to_cpup (const struct fusbh200_hcd *fusbh200, const __hc32 *x)
-{
- return le32_to_cpup(x);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline unsigned fusbh200_read_frame_index(struct fusbh200_hcd *fusbh200)
-{
- return fusbh200_readl(fusbh200, &fusbh200->regs->frame_index);
-}
-
-#define fusbh200_itdlen(urb, desc, t) ({ \
- usb_pipein((urb)->pipe) ? \
- (desc)->length - FUSBH200_ITD_LENGTH(t) : \
- FUSBH200_ITD_LENGTH(t); \
-})
-/*-------------------------------------------------------------------------*/
-
-#endif /* __LINUX_FUSBH200_H */
diff --git a/kernel/drivers/usb/host/isp116x-hcd.c b/kernel/drivers/usb/host/isp116x-hcd.c
index 13181dcd9..d089b3fb7 100644
--- a/kernel/drivers/usb/host/isp116x-hcd.c
+++ b/kernel/drivers/usb/host/isp116x-hcd.c
@@ -500,7 +500,8 @@ static void start_atl_transfers(struct isp116x *isp116x)
if (isp116x->periodic_count) {
isp116x->fmindex = index =
(isp116x->fmindex + 1) & (PERIODIC_SIZE - 1);
- if ((load = isp116x->load[index])) {
+ load = isp116x->load[index];
+ if (load) {
/* Bring all int transfers for this frame
into the active queue */
isp116x->atl_active = last_ep =
diff --git a/kernel/drivers/usb/host/max3421-hcd.c b/kernel/drivers/usb/host/max3421-hcd.c
index fc1fd4039..bd98706d1 100644
--- a/kernel/drivers/usb/host/max3421-hcd.c
+++ b/kernel/drivers/usb/host/max3421-hcd.c
@@ -1944,7 +1944,6 @@ static struct spi_driver max3421_driver = {
.remove = max3421_remove,
.driver = {
.name = "max3421-hcd",
- .owner = THIS_MODULE,
},
};
diff --git a/kernel/drivers/usb/host/ohci-at91.c b/kernel/drivers/usb/host/ohci-at91.c
index 15df00cce..8c6e15bd6 100644
--- a/kernel/drivers/usb/host/ohci-at91.c
+++ b/kernel/drivers/usb/host/ohci-at91.c
@@ -36,6 +36,17 @@
#define hcd_to_ohci_at91_priv(h) \
((struct ohci_at91_priv *)hcd_to_ohci(h)->priv)
+#define AT91_MAX_USBH_PORTS 3
+struct at91_usbh_data {
+ int vbus_pin[AT91_MAX_USBH_PORTS]; /* port power-control pin */
+ int overcurrent_pin[AT91_MAX_USBH_PORTS];
+ u8 ports; /* number of ports on root hub */
+ u8 overcurrent_supported;
+ u8 vbus_pin_active_low[AT91_MAX_USBH_PORTS];
+ u8 overcurrent_status[AT91_MAX_USBH_PORTS];
+ u8 overcurrent_changed[AT91_MAX_USBH_PORTS];
+};
+
struct ohci_at91_priv {
struct clk *iclk;
struct clk *fclk;
@@ -431,7 +442,6 @@ static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data)
return IRQ_HANDLED;
}
-#ifdef CONFIG_OF
static const struct of_device_id at91_ohci_dt_ids[] = {
{ .compatible = "atmel,at91rm9200-ohci" },
{ /* sentinel */ }
@@ -439,16 +449,17 @@ static const struct of_device_id at91_ohci_dt_ids[] = {
MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids);
-static int ohci_at91_of_init(struct platform_device *pdev)
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
- int i, gpio, ret;
- enum of_gpio_flags flags;
struct at91_usbh_data *pdata;
- u32 ports;
-
- if (!np)
- return 0;
+ int i;
+ int gpio;
+ int ret;
+ enum of_gpio_flags flags;
+ u32 ports;
/* Right now device-tree probed devices don't get dma_mask set.
* Since shared usb code relies on it, set it here for now.
@@ -462,112 +473,83 @@ static int ohci_at91_of_init(struct platform_device *pdev)
if (!pdata)
return -ENOMEM;
+ pdev->dev.platform_data = pdata;
+
if (!of_property_read_u32(np, "num-ports", &ports))
pdata->ports = ports;
at91_for_each_port(i) {
- gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i, &flags);
+ /*
+ * do not configure PIO if not in relation with
+ * real USB port on board
+ */
+ if (i >= pdata->ports) {
+ pdata->vbus_pin[i] = -EINVAL;
+ pdata->overcurrent_pin[i] = -EINVAL;
+ continue;
+ }
+
+ gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i,
+ &flags);
pdata->vbus_pin[i] = gpio;
if (!gpio_is_valid(gpio))
continue;
pdata->vbus_pin_active_low[i] = flags & OF_GPIO_ACTIVE_LOW;
- }
-
- at91_for_each_port(i)
- pdata->overcurrent_pin[i] =
- of_get_named_gpio_flags(np, "atmel,oc-gpio", i, &flags);
-
- pdev->dev.platform_data = pdata;
-
- return 0;
-}
-#else
-static int ohci_at91_of_init(struct platform_device *pdev)
-{
- return 0;
-}
-#endif
-
-/*-------------------------------------------------------------------------*/
-static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
-{
- struct at91_usbh_data *pdata;
- int i;
- int gpio;
- int ret;
-
- ret = ohci_at91_of_init(pdev);
- if (ret)
- return ret;
+ ret = gpio_request(gpio, "ohci_vbus");
+ if (ret) {
+ dev_err(&pdev->dev,
+ "can't request vbus gpio %d\n", gpio);
+ continue;
+ }
+ ret = gpio_direction_output(gpio,
+ !pdata->vbus_pin_active_low[i]);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "can't put vbus gpio %d as output %d\n",
+ gpio, !pdata->vbus_pin_active_low[i]);
+ gpio_free(gpio);
+ continue;
+ }
- pdata = dev_get_platdata(&pdev->dev);
+ ohci_at91_usb_set_power(pdata, i, 1);
+ }
- if (pdata) {
- at91_for_each_port(i) {
- /*
- * do not configure PIO if not in relation with
- * real USB port on board
- */
- if (i >= pdata->ports) {
- pdata->vbus_pin[i] = -EINVAL;
- pdata->overcurrent_pin[i] = -EINVAL;
- break;
- }
+ at91_for_each_port(i) {
+ if (i >= pdata->ports)
+ break;
- if (!gpio_is_valid(pdata->vbus_pin[i]))
- continue;
- gpio = pdata->vbus_pin[i];
+ pdata->overcurrent_pin[i] =
+ of_get_named_gpio_flags(np, "atmel,oc-gpio", i, &flags);
- ret = gpio_request(gpio, "ohci_vbus");
- if (ret) {
- dev_err(&pdev->dev,
- "can't request vbus gpio %d\n", gpio);
- continue;
- }
- ret = gpio_direction_output(gpio,
- !pdata->vbus_pin_active_low[i]);
- if (ret) {
- dev_err(&pdev->dev,
- "can't put vbus gpio %d as output %d\n",
- gpio, !pdata->vbus_pin_active_low[i]);
- gpio_free(gpio);
- continue;
- }
+ if (!gpio_is_valid(pdata->overcurrent_pin[i]))
+ continue;
+ gpio = pdata->overcurrent_pin[i];
- ohci_at91_usb_set_power(pdata, i, 1);
+ ret = gpio_request(gpio, "ohci_overcurrent");
+ if (ret) {
+ dev_err(&pdev->dev,
+ "can't request overcurrent gpio %d\n",
+ gpio);
+ continue;
}
- at91_for_each_port(i) {
- if (!gpio_is_valid(pdata->overcurrent_pin[i]))
- continue;
- gpio = pdata->overcurrent_pin[i];
-
- ret = gpio_request(gpio, "ohci_overcurrent");
- if (ret) {
- dev_err(&pdev->dev,
- "can't request overcurrent gpio %d\n",
- gpio);
- continue;
- }
-
- ret = gpio_direction_input(gpio);
- if (ret) {
- dev_err(&pdev->dev,
- "can't configure overcurrent gpio %d as input\n",
- gpio);
- gpio_free(gpio);
- continue;
- }
+ ret = gpio_direction_input(gpio);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "can't configure overcurrent gpio %d as input\n",
+ gpio);
+ gpio_free(gpio);
+ continue;
+ }
- ret = request_irq(gpio_to_irq(gpio),
- ohci_hcd_at91_overcurrent_irq,
- IRQF_SHARED, "ohci_overcurrent", pdev);
- if (ret) {
- gpio_free(gpio);
- dev_err(&pdev->dev,
- "can't get gpio IRQ for overcurrent\n");
- }
+ ret = request_irq(gpio_to_irq(gpio),
+ ohci_hcd_at91_overcurrent_irq,
+ IRQF_SHARED, "ohci_overcurrent", pdev);
+ if (ret) {
+ gpio_free(gpio);
+ dev_err(&pdev->dev,
+ "can't get gpio IRQ for overcurrent\n");
}
}
@@ -673,7 +655,7 @@ static struct platform_driver ohci_hcd_at91_driver = {
.driver = {
.name = "at91_ohci",
.pm = &ohci_hcd_at91_pm_ops,
- .of_match_table = of_match_ptr(at91_ohci_dt_ids),
+ .of_match_table = at91_ohci_dt_ids,
},
};
diff --git a/kernel/drivers/usb/host/ohci-dbg.c b/kernel/drivers/usb/host/ohci-dbg.c
index 04f218693..c3eded317 100644
--- a/kernel/drivers/usb/host/ohci-dbg.c
+++ b/kernel/drivers/usb/host/ohci-dbg.c
@@ -491,7 +491,8 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
char *next;
unsigned i;
- if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
+ seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC);
+ if (!seen)
return 0;
seen_count = 0;
@@ -506,7 +507,8 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
/* dump a snapshot of the periodic schedule (and load) */
spin_lock_irqsave (&ohci->lock, flags);
for (i = 0; i < NUM_INTS; i++) {
- if (!(ed = ohci->periodic [i]))
+ ed = ohci->periodic[i];
+ if (!ed)
continue;
temp = scnprintf (next, size, "%2d [%3d]:", i, ohci->load [i]);
diff --git a/kernel/drivers/usb/host/ohci-hcd.c b/kernel/drivers/usb/host/ohci-hcd.c
index 1dab9dfbc..760cb57e9 100644
--- a/kernel/drivers/usb/host/ohci-hcd.c
+++ b/kernel/drivers/usb/host/ohci-hcd.c
@@ -155,7 +155,8 @@ static int ohci_urb_enqueue (
int retval = 0;
/* every endpoint has a ed, locate and maybe (re)initialize it */
- if (! (ed = ed_get (ohci, urb->ep, urb->dev, pipe, urb->interval)))
+ ed = ed_get(ohci, urb->ep, urb->dev, pipe, urb->interval);
+ if (! ed)
return -ENOMEM;
/* for the private part of the URB we need the number of TDs (size) */
diff --git a/kernel/drivers/usb/host/ohci-nxp.c b/kernel/drivers/usb/host/ohci-nxp.c
index d9f0481d7..cfa94275c 100644
--- a/kernel/drivers/usb/host/ohci-nxp.c
+++ b/kernel/drivers/usb/host/ohci-nxp.c
@@ -203,7 +203,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
goto fail_disable;
}
- ret = clk_enable(usb_pll_clk);
+ ret = clk_prepare_enable(usb_pll_clk);
if (ret < 0) {
dev_err(&pdev->dev, "failed to start USB PLL\n");
goto fail_disable;
@@ -223,7 +223,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
goto fail_rate;
}
- ret = clk_enable(usb_dev_clk);
+ ret = clk_prepare_enable(usb_dev_clk);
if (ret < 0) {
dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
goto fail_rate;
@@ -239,7 +239,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
__raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
- ret = clk_enable(usb_otg_clk);
+ ret = clk_prepare_enable(usb_otg_clk);
if (ret < 0) {
dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
goto fail_otg;
@@ -283,11 +283,11 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
fail_resource:
usb_put_hcd(hcd);
fail_hcd:
- clk_disable(usb_otg_clk);
+ clk_disable_unprepare(usb_otg_clk);
fail_otg:
- clk_disable(usb_dev_clk);
+ clk_disable_unprepare(usb_dev_clk);
fail_rate:
- clk_disable(usb_pll_clk);
+ clk_disable_unprepare(usb_pll_clk);
fail_disable:
isp1301_i2c_client = NULL;
return ret;
@@ -300,9 +300,9 @@ static int ohci_hcd_nxp_remove(struct platform_device *pdev)
usb_remove_hcd(hcd);
ohci_nxp_stop_hc();
usb_put_hcd(hcd);
- clk_disable(usb_pll_clk);
- clk_disable(usb_dev_clk);
- i2c_unregister_device(isp1301_i2c_client);
+ clk_disable_unprepare(usb_otg_clk);
+ clk_disable_unprepare(usb_dev_clk);
+ clk_disable_unprepare(usb_pll_clk);
isp1301_i2c_client = NULL;
return 0;
diff --git a/kernel/drivers/usb/host/ohci-platform.c b/kernel/drivers/usb/host/ohci-platform.c
index 185ceee52..c2669f185 100644
--- a/kernel/drivers/usb/host/ohci-platform.c
+++ b/kernel/drivers/usb/host/ohci-platform.c
@@ -57,15 +57,13 @@ static int ohci_platform_power_on(struct platform_device *dev)
}
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- if (priv->phys[phy_num]) {
- ret = phy_init(priv->phys[phy_num]);
- if (ret)
- goto err_exit_phy;
- ret = phy_power_on(priv->phys[phy_num]);
- if (ret) {
- phy_exit(priv->phys[phy_num]);
- goto err_exit_phy;
- }
+ ret = phy_init(priv->phys[phy_num]);
+ if (ret)
+ goto err_exit_phy;
+ ret = phy_power_on(priv->phys[phy_num]);
+ if (ret) {
+ phy_exit(priv->phys[phy_num]);
+ goto err_exit_phy;
}
}
@@ -73,10 +71,8 @@ static int ohci_platform_power_on(struct platform_device *dev)
err_exit_phy:
while (--phy_num >= 0) {
- if (priv->phys[phy_num]) {
- phy_power_off(priv->phys[phy_num]);
- phy_exit(priv->phys[phy_num]);
- }
+ phy_power_off(priv->phys[phy_num]);
+ phy_exit(priv->phys[phy_num]);
}
err_disable_clks:
while (--clk >= 0)
@@ -92,10 +88,8 @@ static void ohci_platform_power_off(struct platform_device *dev)
int clk, phy_num;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- if (priv->phys[phy_num]) {
- phy_power_off(priv->phys[phy_num]);
- phy_exit(priv->phys[phy_num]);
- }
+ phy_power_off(priv->phys[phy_num]);
+ phy_exit(priv->phys[phy_num]);
}
for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
@@ -123,7 +117,6 @@ static int ohci_platform_probe(struct platform_device *dev)
struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
struct ohci_platform_priv *priv;
struct ohci_hcd *ohci;
- const char *phy_name;
int err, irq, phy_num, clk = 0;
if (usb_disabled())
@@ -174,36 +167,22 @@ static int ohci_platform_probe(struct platform_device *dev)
priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
"phys", "#phy-cells");
- priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;
- priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
- sizeof(struct phy *), GFP_KERNEL);
- if (!priv->phys)
- return -ENOMEM;
+ if (priv->num_phys > 0) {
+ priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
+ sizeof(struct phy *), GFP_KERNEL);
+ if (!priv->phys)
+ return -ENOMEM;
+ } else
+ priv->num_phys = 0;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- err = of_property_read_string_index(
- dev->dev.of_node,
- "phy-names", phy_num,
- &phy_name);
-
- if (err < 0) {
- if (priv->num_phys > 1) {
- dev_err(&dev->dev, "phy-names not provided");
- goto err_put_hcd;
- } else
- phy_name = "usb";
- }
-
- priv->phys[phy_num] = devm_phy_get(&dev->dev,
- phy_name);
- if (IS_ERR(priv->phys[phy_num])) {
- err = PTR_ERR(priv->phys[phy_num]);
- if ((priv->num_phys > 1) ||
- (err == -EPROBE_DEFER))
- goto err_put_hcd;
- priv->phys[phy_num] = NULL;
- }
+ priv->phys[phy_num] = devm_of_phy_get_by_index(
+ &dev->dev, dev->dev.of_node, phy_num);
+ if (IS_ERR(priv->phys[phy_num])) {
+ err = PTR_ERR(priv->phys[phy_num]);
+ goto err_put_hcd;
+ }
}
for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
diff --git a/kernel/drivers/usb/host/ohci-q.c b/kernel/drivers/usb/host/ohci-q.c
index fe1d5fc7d..d029bbe9e 100644
--- a/kernel/drivers/usb/host/ohci-q.c
+++ b/kernel/drivers/usb/host/ohci-q.c
@@ -407,7 +407,8 @@ static struct ed *ed_get (
spin_lock_irqsave (&ohci->lock, flags);
- if (!(ed = ep->hcpriv)) {
+ ed = ep->hcpriv;
+ if (!ed) {
struct td *td;
int is_out;
u32 info;
diff --git a/kernel/drivers/usb/host/ohci-spear.c b/kernel/drivers/usb/host/ohci-spear.c
index 707437c88..56478ed2f 100644
--- a/kernel/drivers/usb/host/ohci-spear.c
+++ b/kernel/drivers/usb/host/ohci-spear.c
@@ -161,6 +161,7 @@ static const struct of_device_id spear_ohci_id_table[] = {
{ .compatible = "st,spear600-ohci", },
{ },
};
+MODULE_DEVICE_TABLE(of, spear_ohci_id_table);
/* Driver definition to register with the platform bus */
static struct platform_driver spear_ohci_hcd_driver = {
diff --git a/kernel/drivers/usb/host/ohci-tmio.c b/kernel/drivers/usb/host/ohci-tmio.c
index e9a6eec39..cfcfadfc9 100644
--- a/kernel/drivers/usb/host/ohci-tmio.c
+++ b/kernel/drivers/usb/host/ohci-tmio.c
@@ -58,7 +58,7 @@
#define CCR_PM_CKRNEN 0x0002
#define CCR_PM_USBPW1 0x0004
#define CCR_PM_USBPW2 0x0008
-#define CCR_PM_USBPW3 0x0008
+#define CCR_PM_USBPW3 0x0010
#define CCR_PM_PMEE 0x0100
#define CCR_PM_PMES 0x8000
diff --git a/kernel/drivers/usb/host/oxu210hp-hcd.c b/kernel/drivers/usb/host/oxu210hp-hcd.c
index 6352f54e6..1f139d82c 100644
--- a/kernel/drivers/usb/host/oxu210hp-hcd.c
+++ b/kernel/drivers/usb/host/oxu210hp-hcd.c
@@ -2670,7 +2670,6 @@ static int oxu_hcd_init(struct usb_hcd *hcd)
static int oxu_reset(struct usb_hcd *hcd)
{
struct oxu_hcd *oxu = hcd_to_oxu(hcd);
- int ret;
spin_lock_init(&oxu->mem_lock);
INIT_LIST_HEAD(&oxu->urb_list);
@@ -2696,11 +2695,7 @@ static int oxu_reset(struct usb_hcd *hcd)
oxu->hcs_params = readl(&oxu->caps->hcs_params);
oxu->sbrn = 0x20;
- ret = oxu_hcd_init(hcd);
- if (ret)
- return ret;
-
- return 0;
+ return oxu_hcd_init(hcd);
}
static int oxu_run(struct usb_hcd *hcd)
@@ -2726,7 +2721,7 @@ static int oxu_run(struct usb_hcd *hcd)
* streaming mappings for I/O buffers, like pci_map_single(),
* can return segments above 4GB, if the device allows.
*
- * NOTE: the dma mask is visible through dma_supported(), so
+ * NOTE: the dma mask is visible through dev->dma_mask, so
* drivers can pass this info along ... like NETIF_F_HIGHDMA,
* Scsi_Host.highmem_io, and so forth. It's readonly to all
* host side drivers though.
diff --git a/kernel/drivers/usb/host/ssb-hcd.c b/kernel/drivers/usb/host/ssb-hcd.c
index ffc32f4b1..62b6b7804 100644
--- a/kernel/drivers/usb/host/ssb-hcd.c
+++ b/kernel/drivers/usb/host/ssb-hcd.c
@@ -105,7 +105,7 @@ static struct platform_device *ssb_hcd_create_pdev(struct ssb_device *dev, bool
{
struct platform_device *hci_dev;
struct resource hci_res[2];
- int ret = -ENOMEM;
+ int ret;
memset(hci_res, 0, sizeof(hci_res));
@@ -119,7 +119,7 @@ static struct platform_device *ssb_hcd_create_pdev(struct ssb_device *dev, bool
hci_dev = platform_device_alloc(ohci ? "ohci-platform" :
"ehci-platform" , 0);
if (!hci_dev)
- return NULL;
+ return ERR_PTR(-ENOMEM);
hci_dev->dev.parent = dev->dev;
hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
@@ -166,7 +166,8 @@ static int ssb_hcd_probe(struct ssb_device *dev,
if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
return -EOPNOTSUPP;
- usb_dev = kzalloc(sizeof(struct ssb_hcd_device), GFP_KERNEL);
+ usb_dev = devm_kzalloc(dev->dev, sizeof(struct ssb_hcd_device),
+ GFP_KERNEL);
if (!usb_dev)
return -ENOMEM;
@@ -181,10 +182,8 @@ static int ssb_hcd_probe(struct ssb_device *dev,
start = ssb_admatch_base(tmp);
len = (coreid == SSB_DEV_USB20_HOST) ? 0x800 : ssb_admatch_size(tmp);
usb_dev->ohci_dev = ssb_hcd_create_pdev(dev, true, start, len);
- if (IS_ERR(usb_dev->ohci_dev)) {
- err = PTR_ERR(usb_dev->ohci_dev);
- goto err_free_usb_dev;
- }
+ if (IS_ERR(usb_dev->ohci_dev))
+ return PTR_ERR(usb_dev->ohci_dev);
if (coreid == SSB_DEV_USB20_HOST) {
start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
@@ -200,8 +199,6 @@ static int ssb_hcd_probe(struct ssb_device *dev,
err_unregister_ohci_dev:
platform_device_unregister(usb_dev->ohci_dev);
-err_free_usb_dev:
- kfree(usb_dev);
return err;
}
diff --git a/kernel/drivers/usb/host/u132-hcd.c b/kernel/drivers/usb/host/u132-hcd.c
index d51687780..692ccc693 100644
--- a/kernel/drivers/usb/host/u132-hcd.c
+++ b/kernel/drivers/usb/host/u132-hcd.c
@@ -1542,11 +1542,8 @@ static int u132_periodic_reinit(struct u132 *u132)
(fit ^ FIT) | u132->hc_fminterval);
if (retval)
return retval;
- retval = u132_write_pcimem(u132, periodicstart,
- ((9 * fi) / 10) & 0x3fff);
- if (retval)
- return retval;
- return 0;
+ return u132_write_pcimem(u132, periodicstart,
+ ((9 * fi) / 10) & 0x3fff);
}
static char *hcfs2string(int state)
@@ -2247,9 +2244,8 @@ static int u132_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
{
struct u132 *u132 = hcd_to_u132(hcd);
if (irqs_disabled()) {
- if (__GFP_WAIT & mem_flags) {
- printk(KERN_ERR "invalid context for function that migh"
- "t sleep\n");
+ if (gfpflags_allow_blocking(mem_flags)) {
+ printk(KERN_ERR "invalid context for function that might sleep\n");
return -EINVAL;
}
}
@@ -2701,28 +2697,18 @@ static int u132_roothub_setportfeature(struct u132 *u132, u16 wValue,
if (wIndex == 0 || wIndex > u132->num_ports) {
return -EINVAL;
} else {
- int retval;
int port_index = wIndex - 1;
struct u132_port *port = &u132->port[port_index];
port->Status &= ~(1 << wValue);
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
- retval = u132_write_pcimem(u132,
- roothub.portstatus[port_index], RH_PS_PSS);
- if (retval)
- return retval;
- return 0;
+ return u132_write_pcimem(u132,
+ roothub.portstatus[port_index], RH_PS_PSS);
case USB_PORT_FEAT_POWER:
- retval = u132_write_pcimem(u132,
- roothub.portstatus[port_index], RH_PS_PPS);
- if (retval)
- return retval;
- return 0;
+ return u132_write_pcimem(u132,
+ roothub.portstatus[port_index], RH_PS_PPS);
case USB_PORT_FEAT_RESET:
- retval = u132_roothub_portreset(u132, port_index);
- if (retval)
- return retval;
- return 0;
+ return u132_roothub_portreset(u132, port_index);
default:
return -EPIPE;
}
@@ -2737,7 +2723,6 @@ static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
} else {
int port_index = wIndex - 1;
u32 temp;
- int retval;
struct u132_port *port = &u132->port[port_index];
port->Status &= ~(1 << wValue);
switch (wValue) {
@@ -2773,11 +2758,8 @@ static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
default:
return -EPIPE;
}
- retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
- temp);
- if (retval)
- return retval;
- return 0;
+ return u132_write_pcimem(u132, roothub.portstatus[port_index],
+ temp);
}
}
diff --git a/kernel/drivers/usb/host/uhci-platform.c b/kernel/drivers/usb/host/uhci-platform.c
index 3a3e3eeba..32a6f3d8d 100644
--- a/kernel/drivers/usb/host/uhci-platform.c
+++ b/kernel/drivers/usb/host/uhci-platform.c
@@ -140,6 +140,7 @@ static const struct of_device_id platform_uhci_ids[] = {
{ .compatible = "platform-uhci", },
{}
};
+MODULE_DEVICE_TABLE(of, platform_uhci_ids);
static struct platform_driver uhci_platform_driver = {
.probe = uhci_hcd_platform_probe,
diff --git a/kernel/drivers/usb/host/whci/init.c b/kernel/drivers/usb/host/whci/init.c
index d3e13b640..e36372393 100644
--- a/kernel/drivers/usb/host/whci/init.c
+++ b/kernel/drivers/usb/host/whci/init.c
@@ -175,8 +175,7 @@ void whc_clean_up(struct whc *whc)
pzl_clean_up(whc);
asl_clean_up(whc);
- if (whc->qset_pool)
- dma_pool_destroy(whc->qset_pool);
+ dma_pool_destroy(whc->qset_pool);
len = resource_size(&whc->umc->resource);
if (whc->base)
diff --git a/kernel/drivers/usb/host/whci/qset.c b/kernel/drivers/usb/host/whci/qset.c
index dc31c425c..9f1c0538b 100644
--- a/kernel/drivers/usb/host/whci/qset.c
+++ b/kernel/drivers/usb/host/whci/qset.c
@@ -377,6 +377,10 @@ static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_f
if (std->pl_virt == NULL)
return -ENOMEM;
std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, pl_len, DMA_TO_DEVICE);
+ if (dma_mapping_error(whc->wusbhc.dev, std->dma_addr)) {
+ kfree(std->pl_virt);
+ return -EFAULT;
+ }
for (p = 0; p < std->num_pointers; p++) {
std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr);
diff --git a/kernel/drivers/usb/host/xhci-dbg.c b/kernel/drivers/usb/host/xhci-dbg.c
index 745717ec9..74c42f722 100644
--- a/kernel/drivers/usb/host/xhci-dbg.c
+++ b/kernel/drivers/usb/host/xhci-dbg.c
@@ -58,16 +58,17 @@ void xhci_dbg_regs(struct xhci_hcd *xhci)
static void xhci_print_cap_regs(struct xhci_hcd *xhci)
{
u32 temp;
+ u32 hci_version;
xhci_dbg(xhci, "xHCI capability registers at %p:\n", xhci->cap_regs);
temp = readl(&xhci->cap_regs->hc_capbase);
+ hci_version = HC_VERSION(temp);
xhci_dbg(xhci, "CAPLENGTH AND HCIVERSION 0x%x:\n",
(unsigned int) temp);
xhci_dbg(xhci, "CAPLENGTH: 0x%x\n",
(unsigned int) HC_LENGTH(temp));
- xhci_dbg(xhci, "HCIVERSION: 0x%x\n",
- (unsigned int) HC_VERSION(temp));
+ xhci_dbg(xhci, "HCIVERSION: 0x%x\n", hci_version);
temp = readl(&xhci->cap_regs->hcs_params1);
xhci_dbg(xhci, "HCSPARAMS 1: 0x%x\n",
@@ -99,11 +100,27 @@ static void xhci_print_cap_regs(struct xhci_hcd *xhci)
xhci_dbg(xhci, "HCC PARAMS 0x%x:\n", (unsigned int) temp);
xhci_dbg(xhci, " HC generates %s bit addresses\n",
HCC_64BIT_ADDR(temp) ? "64" : "32");
+ xhci_dbg(xhci, " HC %s Contiguous Frame ID Capability\n",
+ HCC_CFC(temp) ? "has" : "hasn't");
+ xhci_dbg(xhci, " HC %s generate Stopped - Short Package event\n",
+ HCC_SPC(temp) ? "can" : "can't");
/* FIXME */
xhci_dbg(xhci, " FIXME: more HCCPARAMS debugging\n");
temp = readl(&xhci->cap_regs->run_regs_off);
xhci_dbg(xhci, "RTSOFF 0x%x:\n", temp & RTSOFF_MASK);
+
+ /* xhci 1.1 controllers have the HCCPARAMS2 register */
+ if (hci_version > 100) {
+ temp = readl(&xhci->cap_regs->hcc_params2);
+ xhci_dbg(xhci, "HCC PARAMS2 0x%x:\n", (unsigned int) temp);
+ xhci_dbg(xhci, " HC %s Force save context capability",
+ HCC2_FSC(temp) ? "supports" : "doesn't support");
+ xhci_dbg(xhci, " HC %s Large ESIT Payload Capability",
+ HCC2_LEC(temp) ? "supports" : "doesn't support");
+ xhci_dbg(xhci, " HC %s Extended TBC capability",
+ HCC2_ETC(temp) ? "supports" : "doesn't support");
+ }
}
static void xhci_print_command_reg(struct xhci_hcd *xhci)
diff --git a/kernel/drivers/usb/host/xhci-hub.c b/kernel/drivers/usb/host/xhci-hub.c
index ee07ba41c..f980c239e 100644
--- a/kernel/drivers/usb/host/xhci-hub.c
+++ b/kernel/drivers/usb/host/xhci-hub.c
@@ -31,13 +31,15 @@
#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \
PORT_RC | PORT_PLC | PORT_PE)
-/* USB 3.0 BOS descriptor and a capability descriptor, combined */
+/* USB 3 BOS descriptor and a capability descriptors, combined.
+ * Fields will be adjusted and added later in xhci_create_usb3_bos_desc()
+ */
static u8 usb_bos_descriptor [] = {
USB_DT_BOS_SIZE, /* __u8 bLength, 5 bytes */
USB_DT_BOS, /* __u8 bDescriptorType */
0x0F, 0x00, /* __le16 wTotalLength, 15 bytes */
0x1, /* __u8 bNumDeviceCaps */
- /* First device capability */
+ /* First device capability, SuperSpeed */
USB_DT_USB_SS_CAP_SIZE, /* __u8 bLength, 10 bytes */
USB_DT_DEVICE_CAPABILITY, /* Device Capability */
USB_SS_CAP_TYPE, /* bDevCapabilityType, SUPERSPEED_USB */
@@ -46,9 +48,108 @@ static u8 usb_bos_descriptor [] = {
0x03, /* bFunctionalitySupport,
USB 3.0 speed only */
0x00, /* bU1DevExitLat, set later. */
- 0x00, 0x00 /* __le16 bU2DevExitLat, set later. */
+ 0x00, 0x00, /* __le16 bU2DevExitLat, set later. */
+ /* Second device capability, SuperSpeedPlus */
+ 0x0c, /* bLength 12, will be adjusted later */
+ USB_DT_DEVICE_CAPABILITY, /* Device Capability */
+ USB_SSP_CAP_TYPE, /* bDevCapabilityType SUPERSPEED_PLUS */
+ 0x00, /* bReserved 0 */
+ 0x00, 0x00, 0x00, 0x00, /* bmAttributes, get from xhci psic */
+ 0x00, 0x00, /* wFunctionalitySupport */
+ 0x00, 0x00, /* wReserved 0 */
+ /* Sublink Speed Attributes are added in xhci_create_usb3_bos_desc() */
};
+static int xhci_create_usb3_bos_desc(struct xhci_hcd *xhci, char *buf,
+ u16 wLength)
+{
+ int i, ssa_count;
+ u32 temp;
+ u16 desc_size, ssp_cap_size, ssa_size = 0;
+ bool usb3_1 = false;
+
+ desc_size = USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
+ ssp_cap_size = sizeof(usb_bos_descriptor) - desc_size;
+
+ /* does xhci support USB 3.1 Enhanced SuperSpeed */
+ if (xhci->usb3_rhub.min_rev >= 0x01 && xhci->usb3_rhub.psi_uid_count) {
+ /* two SSA entries for each unique PSI ID, one RX and one TX */
+ ssa_count = xhci->usb3_rhub.psi_uid_count * 2;
+ ssa_size = ssa_count * sizeof(u32);
+ desc_size += ssp_cap_size;
+ usb3_1 = true;
+ }
+ memcpy(buf, &usb_bos_descriptor, min(desc_size, wLength));
+
+ if (usb3_1) {
+ /* modify bos descriptor bNumDeviceCaps and wTotalLength */
+ buf[4] += 1;
+ put_unaligned_le16(desc_size + ssa_size, &buf[2]);
+ }
+
+ if (wLength < USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE)
+ return wLength;
+
+ /* Indicate whether the host has LTM support. */
+ temp = readl(&xhci->cap_regs->hcc_params);
+ if (HCC_LTC(temp))
+ buf[8] |= USB_LTM_SUPPORT;
+
+ /* Set the U1 and U2 exit latencies. */
+ if ((xhci->quirks & XHCI_LPM_SUPPORT)) {
+ temp = readl(&xhci->cap_regs->hcs_params3);
+ buf[12] = HCS_U1_LATENCY(temp);
+ put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
+ }
+
+ if (usb3_1) {
+ u32 ssp_cap_base, bm_attrib, psi;
+ int offset;
+
+ ssp_cap_base = USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
+
+ if (wLength < desc_size)
+ return wLength;
+ buf[ssp_cap_base] = ssp_cap_size + ssa_size;
+
+ /* attribute count SSAC bits 4:0 and ID count SSIC bits 8:5 */
+ bm_attrib = (ssa_count - 1) & 0x1f;
+ bm_attrib |= (xhci->usb3_rhub.psi_uid_count - 1) << 5;
+ put_unaligned_le32(bm_attrib, &buf[ssp_cap_base + 4]);
+
+ if (wLength < desc_size + ssa_size)
+ return wLength;
+ /*
+ * Create the Sublink Speed Attributes (SSA) array.
+ * The xhci PSI field and USB 3.1 SSA fields are very similar,
+ * but link type bits 7:6 differ for values 01b and 10b.
+ * xhci has also only one PSI entry for a symmetric link when
+ * USB 3.1 requires two SSA entries (RX and TX) for every link
+ */
+ offset = desc_size;
+ for (i = 0; i < xhci->usb3_rhub.psi_count; i++) {
+ psi = xhci->usb3_rhub.psi[i];
+ psi &= ~USB_SSP_SUBLINK_SPEED_RSVD;
+ if ((psi & PLT_MASK) == PLT_SYM) {
+ /* Symmetric, create SSA RX and TX from one PSI entry */
+ put_unaligned_le32(psi, &buf[offset]);
+ psi |= 1 << 7; /* turn entry to TX */
+ offset += 4;
+ if (offset >= desc_size + ssa_size)
+ return desc_size + ssa_size;
+ } else if ((psi & PLT_MASK) == PLT_ASYM_RX) {
+ /* Asymetric RX, flip bits 7:6 for SSA */
+ psi ^= PLT_MASK;
+ }
+ put_unaligned_le32(psi, &buf[offset]);
+ offset += 4;
+ if (offset >= desc_size + ssa_size)
+ return desc_size + ssa_size;
+ }
+ }
+ /* ssa_size is 0 for other than usb 3.1 hosts */
+ return desc_size + ssa_size;
+}
static void xhci_common_hub_descriptor(struct xhci_hcd *xhci,
struct usb_hub_descriptor *desc, int ports)
@@ -161,7 +262,7 @@ static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
struct usb_hub_descriptor *desc)
{
- if (hcd->speed == HCD_USB3)
+ if (hcd->speed >= HCD_USB3)
xhci_usb3_hub_descriptor(hcd, xhci, desc);
else
xhci_usb2_hub_descriptor(hcd, xhci, desc);
@@ -250,7 +351,7 @@ int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
if (!xhci->devs[i])
continue;
speed = xhci->devs[i]->udev->speed;
- if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3))
+ if (((speed >= USB_SPEED_SUPER) == (hcd->speed >= HCD_USB3))
&& xhci->devs[i]->fake_port == port) {
slot_id = i;
break;
@@ -339,7 +440,7 @@ static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
u16 wIndex, __le32 __iomem *addr, u32 port_status)
{
/* Don't allow the USB core to disable SuperSpeed ports. */
- if (hcd->speed == HCD_USB3) {
+ if (hcd->speed >= HCD_USB3) {
xhci_dbg(xhci, "Ignoring request to disable "
"SuperSpeed port.\n");
return;
@@ -407,7 +508,7 @@ static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array)
int max_ports;
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
- if (hcd->speed == HCD_USB3) {
+ if (hcd->speed >= HCD_USB3) {
max_ports = xhci->num_usb3_ports;
*port_array = xhci->usb3_ports;
} else {
@@ -558,6 +659,22 @@ static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status,
}
}
+static u32 xhci_get_ext_port_status(u32 raw_port_status, u32 port_li)
+{
+ u32 ext_stat = 0;
+ int speed_id;
+
+ /* only support rx and tx lane counts of 1 in usb3.1 spec */
+ speed_id = DEV_PORT_SPEED(raw_port_status);
+ ext_stat |= speed_id; /* bits 3:0, RX speed id */
+ ext_stat |= speed_id << 4; /* bits 7:4, TX speed id */
+
+ ext_stat |= PORT_RX_LANES(port_li) << 8; /* bits 11:8 Rx lane count */
+ ext_stat |= PORT_TX_LANES(port_li) << 12; /* bits 15:12 Tx lane count */
+
+ return ext_stat;
+}
+
/*
* Converts a raw xHCI port status into the format that external USB 2.0 or USB
* 3.0 hubs use.
@@ -590,7 +707,7 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
if ((raw_port_status & PORT_RC))
status |= USB_PORT_STAT_C_RESET << 16;
/* USB3.0 only */
- if (hcd->speed == HCD_USB3) {
+ if (hcd->speed >= HCD_USB3) {
/* Port link change with port in resume state should not be
* reported to usbcore, as this is an internal state to be
* handled by xhci driver. Reporting PLC to usbcore may
@@ -606,18 +723,40 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
status |= USB_PORT_STAT_C_CONFIG_ERROR << 16;
}
- if (hcd->speed != HCD_USB3) {
+ if (hcd->speed < HCD_USB3) {
if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3
&& (raw_port_status & PORT_POWER))
status |= USB_PORT_STAT_SUSPEND;
}
if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME &&
- !DEV_SUPERSPEED(raw_port_status)) {
+ !DEV_SUPERSPEED_ANY(raw_port_status)) {
if ((raw_port_status & PORT_RESET) ||
!(raw_port_status & PORT_PE))
return 0xffffffff;
- if (time_after_eq(jiffies,
- bus_state->resume_done[wIndex])) {
+ /* did port event handler already start resume timing? */
+ if (!bus_state->resume_done[wIndex]) {
+ /* If not, maybe we are in a host initated resume? */
+ if (test_bit(wIndex, &bus_state->resuming_ports)) {
+ /* Host initated resume doesn't time the resume
+ * signalling using resume_done[].
+ * It manually sets RESUME state, sleeps 20ms
+ * and sets U0 state. This should probably be
+ * changed, but not right now.
+ */
+ } else {
+ /* port resume was discovered now and here,
+ * start resume timing
+ */
+ unsigned long timeout = jiffies +
+ msecs_to_jiffies(USB_RESUME_TIMEOUT);
+
+ set_bit(wIndex, &bus_state->resuming_ports);
+ bus_state->resume_done[wIndex] = timeout;
+ mod_timer(&hcd->rh_timer, timeout);
+ }
+ /* Has resume been signalled for USB_RESUME_TIME yet? */
+ } else if (time_after_eq(jiffies,
+ bus_state->resume_done[wIndex])) {
int time_left;
xhci_dbg(xhci, "Resume USB2 port %d\n",
@@ -658,19 +797,35 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
} else {
/*
* The resume has been signaling for less than
- * 20ms. Report the port status as SUSPEND,
- * let the usbcore check port status again
- * and clear resume signaling later.
+ * USB_RESUME_TIME. Report the port status as SUSPEND,
+ * let the usbcore check port status again and clear
+ * resume signaling later.
*/
status |= USB_PORT_STAT_SUSPEND;
}
}
- if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0
- && (raw_port_status & PORT_POWER)
- && (bus_state->suspended_ports & (1 << wIndex))) {
- bus_state->suspended_ports &= ~(1 << wIndex);
- if (hcd->speed != HCD_USB3)
- bus_state->port_c_suspend |= 1 << wIndex;
+ /*
+ * Clear stale usb2 resume signalling variables in case port changed
+ * state during resume signalling. For example on error
+ */
+ if ((bus_state->resume_done[wIndex] ||
+ test_bit(wIndex, &bus_state->resuming_ports)) &&
+ (raw_port_status & PORT_PLS_MASK) != XDEV_U3 &&
+ (raw_port_status & PORT_PLS_MASK) != XDEV_RESUME) {
+ bus_state->resume_done[wIndex] = 0;
+ clear_bit(wIndex, &bus_state->resuming_ports);
+ }
+
+
+ if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 &&
+ (raw_port_status & PORT_POWER)) {
+ if (bus_state->suspended_ports & (1 << wIndex)) {
+ bus_state->suspended_ports &= ~(1 << wIndex);
+ if (hcd->speed < HCD_USB3)
+ bus_state->port_c_suspend |= 1 << wIndex;
+ }
+ bus_state->resume_done[wIndex] = 0;
+ clear_bit(wIndex, &bus_state->resuming_ports);
}
if (raw_port_status & PORT_CONNECT) {
status |= USB_PORT_STAT_CONNECTION;
@@ -683,13 +838,13 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
if (raw_port_status & PORT_RESET)
status |= USB_PORT_STAT_RESET;
if (raw_port_status & PORT_POWER) {
- if (hcd->speed == HCD_USB3)
+ if (hcd->speed >= HCD_USB3)
status |= USB_SS_PORT_STAT_POWER;
else
status |= USB_PORT_STAT_POWER;
}
/* Update Port Link State */
- if (hcd->speed == HCD_USB3) {
+ if (hcd->speed >= HCD_USB3) {
xhci_hub_report_usb3_link_state(xhci, &status, raw_port_status);
/*
* Verify if all USB3 Ports Have entered U0 already.
@@ -734,7 +889,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
* descriptor for the USB 3.0 roothub. If not, we stall the
* endpoint, like external hubs do.
*/
- if (hcd->speed == HCD_USB3 &&
+ if (hcd->speed >= HCD_USB3 &&
(wLength < USB_DT_SS_HUB_SIZE ||
wValue != (USB_DT_SS_HUB << 8))) {
xhci_dbg(xhci, "Wrong hub descriptor type for "
@@ -748,25 +903,12 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
if ((wValue & 0xff00) != (USB_DT_BOS << 8))
goto error;
- if (hcd->speed != HCD_USB3)
+ if (hcd->speed < HCD_USB3)
goto error;
- /* Set the U1 and U2 exit latencies. */
- memcpy(buf, &usb_bos_descriptor,
- USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE);
- if ((xhci->quirks & XHCI_LPM_SUPPORT)) {
- temp = readl(&xhci->cap_regs->hcs_params3);
- buf[12] = HCS_U1_LATENCY(temp);
- put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
- }
-
- /* Indicate whether the host has LTM support. */
- temp = readl(&xhci->cap_regs->hcc_params);
- if (HCC_LTC(temp))
- buf[8] |= USB_LTM_SUPPORT;
-
+ retval = xhci_create_usb3_bos_desc(xhci, buf, wLength);
spin_unlock_irqrestore(&xhci->lock, flags);
- return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
+ return retval;
case GetPortStatus:
if (!wIndex || wIndex > max_ports)
goto error;
@@ -786,6 +928,19 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
xhci_dbg(xhci, "Get port status returned 0x%x\n", status);
put_unaligned(cpu_to_le32(status), (__le32 *) buf);
+ /* if USB 3.1 extended port status return additional 4 bytes */
+ if (wValue == 0x02) {
+ u32 port_li;
+
+ if (hcd->speed < HCD_USB31 || wLength != 8) {
+ xhci_err(xhci, "get ext port status invalid parameter\n");
+ retval = -EINVAL;
+ break;
+ }
+ port_li = readl(port_array[wIndex] + PORTLI);
+ status = xhci_get_ext_port_status(temp, port_li);
+ put_unaligned_le32(cpu_to_le32(status), &buf[4]);
+ }
break;
case SetPortFeature:
if (wValue == USB_PORT_FEAT_LINK_STATE)
@@ -952,7 +1107,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp = readl(port_array[wIndex]);
break;
case USB_PORT_FEAT_U1_TIMEOUT:
- if (hcd->speed != HCD_USB3)
+ if (hcd->speed < HCD_USB3)
goto error;
temp = readl(port_array[wIndex] + PORTPMSC);
temp &= ~PORT_U1_TIMEOUT_MASK;
@@ -960,7 +1115,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
writel(temp, port_array[wIndex] + PORTPMSC);
break;
case USB_PORT_FEAT_U2_TIMEOUT:
- if (hcd->speed != HCD_USB3)
+ if (hcd->speed < HCD_USB3)
goto error;
temp = readl(port_array[wIndex] + PORTPMSC);
temp &= ~PORT_U2_TIMEOUT_MASK;
@@ -995,6 +1150,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
if ((temp & PORT_PE) == 0)
goto error;
+ set_bit(wIndex, &bus_state->resuming_ports);
xhci_set_link_state(xhci, port_array, wIndex,
XDEV_RESUME);
spin_unlock_irqrestore(&xhci->lock, flags);
@@ -1002,6 +1158,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
spin_lock_irqsave(&xhci->lock, flags);
xhci_set_link_state(xhci, port_array, wIndex,
XDEV_U0);
+ clear_bit(wIndex, &bus_state->resuming_ports);
}
bus_state->port_c_suspend |= 1 << wIndex;
@@ -1194,6 +1351,10 @@ int xhci_bus_resume(struct usb_hcd *hcd)
struct xhci_bus_state *bus_state;
u32 temp;
unsigned long flags;
+ unsigned long port_was_suspended = 0;
+ bool need_usb2_u3_exit = false;
+ int slot_id;
+ int sret;
max_ports = xhci_get_ports(hcd, &port_array);
bus_state = &xhci->bus_state[hcd_index(hcd)];
@@ -1217,48 +1378,55 @@ int xhci_bus_resume(struct usb_hcd *hcd)
/* Check whether need resume ports. If needed
resume port and disable remote wakeup */
u32 temp;
- int slot_id;
temp = readl(port_array[port_index]);
- if (DEV_SUPERSPEED(temp))
+ if (DEV_SUPERSPEED_ANY(temp))
temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
else
temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
if (test_bit(port_index, &bus_state->bus_suspended) &&
(temp & PORT_PLS_MASK)) {
- if (DEV_SUPERSPEED(temp)) {
- xhci_set_link_state(xhci, port_array,
- port_index, XDEV_U0);
- } else {
+ set_bit(port_index, &port_was_suspended);
+ if (!DEV_SUPERSPEED_ANY(temp)) {
xhci_set_link_state(xhci, port_array,
port_index, XDEV_RESUME);
-
- spin_unlock_irqrestore(&xhci->lock, flags);
- msleep(20);
- spin_lock_irqsave(&xhci->lock, flags);
-
- xhci_set_link_state(xhci, port_array,
- port_index, XDEV_U0);
+ need_usb2_u3_exit = true;
}
- /* wait for the port to enter U0 and report port link
- * state change.
- */
- spin_unlock_irqrestore(&xhci->lock, flags);
- msleep(20);
- spin_lock_irqsave(&xhci->lock, flags);
-
- /* Clear PLC */
- xhci_test_and_clear_bit(xhci, port_array, port_index,
- PORT_PLC);
-
- slot_id = xhci_find_slot_id_by_port(hcd,
- xhci, port_index + 1);
- if (slot_id)
- xhci_ring_device(xhci, slot_id);
} else
writel(temp, port_array[port_index]);
}
+ if (need_usb2_u3_exit) {
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ msleep(20);
+ spin_lock_irqsave(&xhci->lock, flags);
+ }
+
+ port_index = max_ports;
+ while (port_index--) {
+ if (!(port_was_suspended & BIT(port_index)))
+ continue;
+ /* Clear PLC to poll it later after XDEV_U0 */
+ xhci_test_and_clear_bit(xhci, port_array, port_index, PORT_PLC);
+ xhci_set_link_state(xhci, port_array, port_index, XDEV_U0);
+ }
+
+ port_index = max_ports;
+ while (port_index--) {
+ if (!(port_was_suspended & BIT(port_index)))
+ continue;
+ /* Poll and Clear PLC */
+ sret = xhci_handshake(port_array[port_index], PORT_PLC,
+ PORT_PLC, 10 * 1000);
+ if (sret)
+ xhci_warn(xhci, "port %d resume PLC timeout\n",
+ port_index);
+ xhci_test_and_clear_bit(xhci, port_array, port_index, PORT_PLC);
+ slot_id = xhci_find_slot_id_by_port(hcd, xhci, port_index + 1);
+ if (slot_id)
+ xhci_ring_device(xhci, slot_id);
+ }
+
(void) readl(&xhci->op_regs->command);
bus_state->next_statechange = jiffies + msecs_to_jiffies(5);
diff --git a/kernel/drivers/usb/host/xhci-mem.c b/kernel/drivers/usb/host/xhci-mem.c
index 9a8c936cd..c48cbe731 100644
--- a/kernel/drivers/usb/host/xhci-mem.c
+++ b/kernel/drivers/usb/host/xhci-mem.c
@@ -1498,10 +1498,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
* use Event Data TRBs, and we don't chain in a link TRB on short
* transfers, we're basically dividing by 1.
*
- * xHCI 1.0 specification indicates that the Average TRB Length should
- * be set to 8 for control endpoints.
+ * xHCI 1.0 and 1.1 specification indicates that the Average TRB Length
+ * should be set to 8 for control endpoints.
*/
- if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version == 0x100)
+ if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version >= 0x100)
ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(8));
else
ep_ctx->tx_info |=
@@ -1792,8 +1792,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
int size;
int i, j, num_ports;
- if (timer_pending(&xhci->cmd_timer))
- del_timer_sync(&xhci->cmd_timer);
+ del_timer_sync(&xhci->cmd_timer);
/* Free the Event Ring Segment Table and the actual Event Ring */
size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
@@ -1829,24 +1828,20 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
for (i = 1; i < MAX_HC_SLOTS; ++i)
xhci_free_virt_device(xhci, i);
- if (xhci->segment_pool)
- dma_pool_destroy(xhci->segment_pool);
+ dma_pool_destroy(xhci->segment_pool);
xhci->segment_pool = NULL;
xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed segment pool");
- if (xhci->device_pool)
- dma_pool_destroy(xhci->device_pool);
+ dma_pool_destroy(xhci->device_pool);
xhci->device_pool = NULL;
xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed device context pool");
- if (xhci->small_streams_pool)
- dma_pool_destroy(xhci->small_streams_pool);
+ dma_pool_destroy(xhci->small_streams_pool);
xhci->small_streams_pool = NULL;
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"Freed small stream array pool");
- if (xhci->medium_streams_pool)
- dma_pool_destroy(xhci->medium_streams_pool);
+ dma_pool_destroy(xhci->medium_streams_pool);
xhci->medium_streams_pool = NULL;
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"Freed medium stream array pool");
@@ -2073,14 +2068,23 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
{
u32 temp, port_offset, port_count;
int i;
+ struct xhci_hub *rhub;
- if (major_revision > 0x03) {
+ temp = readl(addr);
+
+ if (XHCI_EXT_PORT_MAJOR(temp) == 0x03) {
+ rhub = &xhci->usb3_rhub;
+ } else if (XHCI_EXT_PORT_MAJOR(temp) <= 0x02) {
+ rhub = &xhci->usb2_rhub;
+ } else {
xhci_warn(xhci, "Ignoring unknown port speed, "
"Ext Cap %p, revision = 0x%x\n",
addr, major_revision);
/* Ignoring port protocol we can't understand. FIXME */
return;
}
+ rhub->maj_rev = XHCI_EXT_PORT_MAJOR(temp);
+ rhub->min_rev = XHCI_EXT_PORT_MINOR(temp);
/* Port offset and count in the third dword, see section 7.2 */
temp = readl(addr + 2);
@@ -2095,6 +2099,33 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
/* WTF? "Valid values are ‘1’ to MaxPorts" */
return;
+ rhub->psi_count = XHCI_EXT_PORT_PSIC(temp);
+ if (rhub->psi_count) {
+ rhub->psi = kcalloc(rhub->psi_count, sizeof(*rhub->psi),
+ GFP_KERNEL);
+ if (!rhub->psi)
+ rhub->psi_count = 0;
+
+ rhub->psi_uid_count++;
+ for (i = 0; i < rhub->psi_count; i++) {
+ rhub->psi[i] = readl(addr + 4 + i);
+
+ /* count unique ID values, two consecutive entries can
+ * have the same ID if link is assymetric
+ */
+ if (i && (XHCI_EXT_PORT_PSIV(rhub->psi[i]) !=
+ XHCI_EXT_PORT_PSIV(rhub->psi[i - 1])))
+ rhub->psi_uid_count++;
+
+ xhci_dbg(xhci, "PSIV:%d PSIE:%d PLT:%d PFD:%d LP:%d PSIM:%d\n",
+ XHCI_EXT_PORT_PSIV(rhub->psi[i]),
+ XHCI_EXT_PORT_PSIE(rhub->psi[i]),
+ XHCI_EXT_PORT_PLT(rhub->psi[i]),
+ XHCI_EXT_PORT_PFD(rhub->psi[i]),
+ XHCI_EXT_PORT_LP(rhub->psi[i]),
+ XHCI_EXT_PORT_PSIM(rhub->psi[i]));
+ }
+ }
/* cache usb2 port capabilities */
if (major_revision < 0x03 && xhci->num_ext_caps < max_caps)
xhci->ext_caps[xhci->num_ext_caps++] = temp;
@@ -2321,6 +2352,10 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
INIT_LIST_HEAD(&xhci->cmd_list);
+ /* init command timeout timer */
+ setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
+ (unsigned long)xhci);
+
page_size = readl(&xhci->op_regs->page_size);
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"Supported page size register = 0x%x", page_size);
@@ -2505,10 +2540,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
"Wrote ERST address to ir_set 0.");
xhci_print_ir_set(xhci, 0);
- /* init command timeout timer */
- setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
- (unsigned long)xhci);
-
/*
* XXX: Might need to set the Interrupter Moderation Register to
* something other than the default (~1ms minimum between interrupts).
diff --git a/kernel/drivers/usb/host/xhci-pci.c b/kernel/drivers/usb/host/xhci-pci.c
index 2af32e26f..c2d65206e 100644
--- a/kernel/drivers/usb/host/xhci-pci.c
+++ b/kernel/drivers/usb/host/xhci-pci.c
@@ -23,10 +23,17 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/acpi.h>
#include "xhci.h"
#include "xhci-trace.h"
+#define SSIC_PORT_NUM 2
+#define SSIC_PORT_CFG2 0x880c
+#define SSIC_PORT_CFG2_OFFSET 0x30
+#define PROG_DONE (1 << 30)
+#define SSIC_PORT_UNUSED (1 << 31)
+
/* Device for a quirk */
#define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73
#define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000
@@ -40,11 +47,19 @@
#define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI 0x22b5
#define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f
#define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f
+#define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8
static const char hcd_name[] = "xhci_hcd";
static struct hc_driver __read_mostly xhci_pci_hc_driver;
+static int xhci_pci_setup(struct usb_hcd *hcd);
+
+static const struct xhci_driver_overrides xhci_pci_overrides __initconst = {
+ .extra_priv_size = sizeof(struct xhci_hcd),
+ .reset = xhci_pci_setup,
+};
+
/* called after powerup, by probe or system-pm "wakeup" */
static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
{
@@ -135,11 +150,13 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
xhci->quirks |= XHCI_SPURIOUS_REBOOT;
+ xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
}
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
(pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
- pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI)) {
+ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) {
xhci->quirks |= XHCI_PME_STUCK_QUIRK;
}
if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
@@ -168,20 +185,22 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
"QUIRK: Resetting on resume");
}
-/*
- * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
- * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
- */
-static void xhci_pme_quirk(struct xhci_hcd *xhci)
+#ifdef CONFIG_ACPI
+static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
{
- u32 val;
- void __iomem *reg;
-
- reg = (void __iomem *) xhci->cap_regs + 0x80a4;
- val = readl(reg);
- writel(val | BIT(28), reg);
- readl(reg);
+ static const u8 intel_dsm_uuid[] = {
+ 0xb7, 0x0c, 0x34, 0xac, 0x01, 0xe9, 0xbf, 0x45,
+ 0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23,
+ };
+ union acpi_object *obj;
+
+ obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), intel_dsm_uuid, 3, 1,
+ NULL);
+ ACPI_FREE(obj);
}
+#else
+static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
+#endif /* CONFIG_ACPI */
/* called during probe() after chip reset completes */
static int xhci_pci_setup(struct usb_hcd *hcd)
@@ -190,15 +209,17 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
int retval;
+ xhci = hcd_to_xhci(hcd);
+ if (!xhci->sbrn)
+ pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
+
retval = xhci_gen_setup(hcd, xhci_pci_quirks);
if (retval)
return retval;
- xhci = hcd_to_xhci(hcd);
if (!usb_hcd_is_primary_hcd(hcd))
return 0;
- pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
/* Find any debug ports */
@@ -206,7 +227,6 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
if (!retval)
return retval;
- kfree(xhci);
return retval;
}
@@ -247,11 +267,6 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
goto dealloc_usb2_hcd;
}
- /* Set the xHCI pointer before xhci_pci_setup() (aka hcd_driver.reset)
- * is called by usb_add_hcd().
- */
- *((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
-
retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
IRQF_SHARED);
if (retval)
@@ -262,6 +277,9 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
+ if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
+ xhci_pme_acpi_rtd3_enable(dev);
+
/* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
pm_runtime_put_noidle(&dev->dev);
@@ -290,11 +308,62 @@ static void xhci_pci_remove(struct pci_dev *dev)
/* Workaround for spurious wakeups at shutdown with HSW */
if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
pci_set_power_state(dev, PCI_D3hot);
-
- kfree(xhci);
}
#ifdef CONFIG_PM
+/*
+ * In some Intel xHCI controllers, in order to get D3 working,
+ * through a vendor specific SSIC CONFIG register at offset 0x883c,
+ * SSIC PORT need to be marked as "unused" before putting xHCI
+ * into D3. After D3 exit, the SSIC port need to be marked as "used".
+ * Without this change, xHCI might not enter D3 state.
+ * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
+ * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
+ */
+static void xhci_pme_quirk(struct usb_hcd *hcd, bool suspend)
+{
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
+ u32 val;
+ void __iomem *reg;
+ int i;
+
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
+
+ for (i = 0; i < SSIC_PORT_NUM; i++) {
+ reg = (void __iomem *) xhci->cap_regs +
+ SSIC_PORT_CFG2 +
+ i * SSIC_PORT_CFG2_OFFSET;
+
+ /*
+ * Notify SSIC that SSIC profile programming
+ * is not done.
+ */
+ val = readl(reg) & ~PROG_DONE;
+ writel(val, reg);
+
+ /* Mark SSIC port as unused(suspend) or used(resume) */
+ val = readl(reg);
+ if (suspend)
+ val |= SSIC_PORT_UNUSED;
+ else
+ val &= ~SSIC_PORT_UNUSED;
+ writel(val, reg);
+
+ /* Notify SSIC that SSIC profile programming is done */
+ val = readl(reg) | PROG_DONE;
+ writel(val, reg);
+ readl(reg);
+ }
+ }
+
+ reg = (void __iomem *) xhci->cap_regs + 0x80a4;
+ val = readl(reg);
+ writel(val | BIT(28), reg);
+ readl(reg);
+}
+
static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
@@ -308,7 +377,7 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
pdev->no_d3cold = true;
if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
- xhci_pme_quirk(xhci);
+ xhci_pme_quirk(hcd, true);
return xhci_suspend(xhci, do_wakeup);
}
@@ -341,7 +410,7 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
usb_enable_intel_xhci_ports(pdev);
if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
- xhci_pme_quirk(xhci);
+ xhci_pme_quirk(hcd, false);
retval = xhci_resume(xhci, hibernated);
return retval;
@@ -379,7 +448,7 @@ static struct pci_driver xhci_pci_driver = {
static int __init xhci_pci_init(void)
{
- xhci_init_driver(&xhci_pci_hc_driver, xhci_pci_setup);
+ xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides);
#ifdef CONFIG_PM
xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend;
xhci_pci_hc_driver.pci_resume = xhci_pci_resume;
diff --git a/kernel/drivers/usb/host/xhci-plat.c b/kernel/drivers/usb/host/xhci-plat.c
index 783e81913..05647e675 100644
--- a/kernel/drivers/usb/host/xhci-plat.c
+++ b/kernel/drivers/usb/host/xhci-plat.c
@@ -19,6 +19,7 @@
#include <linux/usb/phy.h>
#include <linux/slab.h>
#include <linux/usb/xhci_pdriver.h>
+#include <linux/acpi.h>
#include "xhci.h"
#include "xhci-mvebu.h"
@@ -26,6 +27,15 @@
static struct hc_driver __read_mostly xhci_plat_hc_driver;
+static int xhci_plat_setup(struct usb_hcd *hcd);
+static int xhci_plat_start(struct usb_hcd *hcd);
+
+static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
+ .extra_priv_size = sizeof(struct xhci_hcd),
+ .reset = xhci_plat_setup,
+ .start = xhci_plat_start,
+};
+
static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
{
/*
@@ -84,14 +94,20 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (irq < 0)
return -ENODEV;
- /* Initialize dma_mask and coherent_dma_mask to 32-bits */
- ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
- if (!pdev->dev.dma_mask)
- pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+ /* Try to set 64-bit DMA first */
+ if (WARN_ON(!pdev->dev.dma_mask))
+ /* Platform did not initialize dma_mask */
+ ret = dma_coerce_mask_and_coherent(&pdev->dev,
+ DMA_BIT_MASK(64));
else
- dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+
+ /* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */
+ if (ret) {
+ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
+ }
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd)
@@ -127,31 +143,21 @@ static int xhci_plat_probe(struct platform_device *pdev)
goto disable_clk;
}
- ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
- if (ret)
- goto disable_clk;
-
device_wakeup_enable(hcd->self.controller);
- /* USB 2.0 roothub is stored in the platform_device now. */
- hcd = platform_get_drvdata(pdev);
xhci = hcd_to_xhci(hcd);
xhci->clk = clk;
+ xhci->main_hcd = hcd;
xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
dev_name(&pdev->dev), hcd);
if (!xhci->shared_hcd) {
ret = -ENOMEM;
- goto dealloc_usb2_hcd;
+ goto disable_clk;
}
if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||
(pdata && pdata->usb3_lpm_capable))
xhci->quirks |= XHCI_LPM_SUPPORT;
- /*
- * Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset)
- * is called by usb_add_hcd().
- */
- *((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
@@ -168,21 +174,26 @@ static int xhci_plat_probe(struct platform_device *pdev)
goto put_usb3_hcd;
}
- ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
+ ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret)
goto disable_usb_phy;
+ ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
+ if (ret)
+ goto dealloc_usb2_hcd;
+
return 0;
+
+dealloc_usb2_hcd:
+ usb_remove_hcd(hcd);
+
disable_usb_phy:
usb_phy_shutdown(hcd->usb_phy);
put_usb3_hcd:
usb_put_hcd(xhci->shared_hcd);
-dealloc_usb2_hcd:
- usb_remove_hcd(hcd);
-
disable_clk:
if (!IS_ERR(clk))
clk_disable_unprepare(clk);
@@ -201,13 +212,13 @@ static int xhci_plat_remove(struct platform_device *dev)
usb_remove_hcd(xhci->shared_hcd);
usb_phy_shutdown(hcd->usb_phy);
- usb_put_hcd(xhci->shared_hcd);
usb_remove_hcd(hcd);
+ usb_put_hcd(xhci->shared_hcd);
+
if (!IS_ERR(clk))
clk_disable_unprepare(clk);
usb_put_hcd(hcd);
- kfree(xhci);
return 0;
}
@@ -258,6 +269,13 @@ static const struct of_device_id usb_xhci_of_match[] = {
MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
#endif
+static const struct acpi_device_id usb_xhci_acpi_match[] = {
+ /* XHCI-compliant USB Controller */
+ { "PNP0D10", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
+
static struct platform_driver usb_xhci_driver = {
.probe = xhci_plat_probe,
.remove = xhci_plat_remove,
@@ -265,14 +283,14 @@ static struct platform_driver usb_xhci_driver = {
.name = "xhci-hcd",
.pm = DEV_PM_OPS,
.of_match_table = of_match_ptr(usb_xhci_of_match),
+ .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
},
};
MODULE_ALIAS("platform:xhci-hcd");
static int __init xhci_plat_init(void)
{
- xhci_init_driver(&xhci_plat_hc_driver, xhci_plat_setup);
- xhci_plat_hc_driver.start = xhci_plat_start;
+ xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
return platform_driver_register(&usb_xhci_driver);
}
module_init(xhci_plat_init);
diff --git a/kernel/drivers/usb/host/xhci-ring.c b/kernel/drivers/usb/host/xhci-ring.c
index b3a0a2275..db0f0831b 100644
--- a/kernel/drivers/usb/host/xhci-ring.c
+++ b/kernel/drivers/usb/host/xhci-ring.c
@@ -302,6 +302,15 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci)
ret = xhci_handshake(&xhci->op_regs->cmd_ring,
CMD_RING_RUNNING, 0, 5 * 1000 * 1000);
if (ret < 0) {
+ /* we are about to kill xhci, give it one more chance */
+ xhci_write_64(xhci, temp_64 | CMD_RING_ABORT,
+ &xhci->op_regs->cmd_ring);
+ udelay(1000);
+ ret = xhci_handshake(&xhci->op_regs->cmd_ring,
+ CMD_RING_RUNNING, 0, 3 * 1000 * 1000);
+ if (ret == 0)
+ return 0;
+
xhci_err(xhci, "Stopped the command ring failed, "
"maybe the host is dead\n");
xhci->xhc_state |= XHCI_STATE_DYING;
@@ -1444,7 +1453,7 @@ static unsigned int find_faked_portnum_from_hw_portnum(struct usb_hcd *hcd,
* 1.1 ports are under the USB 2.0 hub. If the port speed
* matches the device speed, it's a similar speed port.
*/
- if ((port_speed == 0x03) == (hcd->speed == HCD_USB3))
+ if ((port_speed == 0x03) == (hcd->speed >= HCD_USB3))
num_similar_speed_ports++;
}
return num_similar_speed_ports;
@@ -1506,7 +1515,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
/* Find the right roothub. */
hcd = xhci_to_hcd(xhci);
- if ((major_revision == 0x03) != (hcd->speed == HCD_USB3))
+ if ((major_revision == 0x03) != (hcd->speed >= HCD_USB3))
hcd = xhci->shared_hcd;
if (major_revision == 0) {
@@ -1532,7 +1541,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
* correct bus_state structure.
*/
bus_state = &xhci->bus_state[hcd_index(hcd)];
- if (hcd->speed == HCD_USB3)
+ if (hcd->speed >= HCD_USB3)
port_array = xhci->usb3_ports;
else
port_array = xhci->usb2_ports;
@@ -1546,7 +1555,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
usb_hcd_resume_root_hub(hcd);
}
- if (hcd->speed == HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
+ if (hcd->speed >= HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
bus_state->port_remote_wakeup &= ~(1 << faked_port_index);
if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_RESUME) {
@@ -1558,7 +1567,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
goto cleanup;
}
- if (DEV_SUPERSPEED(temp)) {
+ if (DEV_SUPERSPEED_ANY(temp)) {
xhci_dbg(xhci, "remote wake SS port %d\n", port_id);
/* Set a flag to say the port signaled remote wakeup,
* so we can tell the difference between the end of
@@ -1574,7 +1583,8 @@ static void handle_port_status(struct xhci_hcd *xhci,
*/
bogus_port_status = true;
goto cleanup;
- } else {
+ } else if (!test_bit(faked_port_index,
+ &bus_state->resuming_ports)) {
xhci_dbg(xhci, "resume HS port %d\n", port_id);
bus_state->resume_done[faked_port_index] = jiffies +
msecs_to_jiffies(USB_RESUME_TIMEOUT);
@@ -1586,7 +1596,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
}
if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_U0 &&
- DEV_SUPERSPEED(temp)) {
+ DEV_SUPERSPEED_ANY(temp)) {
xhci_dbg(xhci, "resume SS port %d finished\n", port_id);
/* We've just brought the device into U0 through either the
* Resume state after a device remote wakeup, or through the
@@ -1616,7 +1626,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
* RExit to a disconnect state). If so, let the the driver know it's
* out of the RExit state.
*/
- if (!DEV_SUPERSPEED(temp) &&
+ if (!DEV_SUPERSPEED_ANY(temp) &&
test_and_clear_bit(faked_port_index,
&bus_state->rexit_ports)) {
complete(&bus_state->rexit_done[faked_port_index]);
@@ -1624,7 +1634,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
goto cleanup;
}
- if (hcd->speed != HCD_USB3)
+ if (hcd->speed < HCD_USB3)
xhci_test_and_clear_bit(xhci, port_array, faked_port_index,
PORT_PLC);
@@ -1812,7 +1822,9 @@ static int finish_td(struct xhci_hcd *xhci, struct xhci_td *td,
if (skip)
goto td_cleanup;
- if (trb_comp_code == COMP_STOP_INVAL || trb_comp_code == COMP_STOP) {
+ if (trb_comp_code == COMP_STOP_INVAL ||
+ trb_comp_code == COMP_STOP ||
+ trb_comp_code == COMP_STOP_SHORT) {
/* The Endpoint Stop Command completion will take care of any
* stopped TDs. A stopped TD may be restarted, so don't update
* the ring dequeue pointer or take this TD off any lists yet.
@@ -1919,8 +1931,22 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
else
*status = 0;
break;
- case COMP_STOP_INVAL:
+ case COMP_STOP_SHORT:
+ if (event_trb == ep_ring->dequeue || event_trb == td->last_trb)
+ xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n");
+ else
+ td->urb->actual_length =
+ EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+
+ return finish_td(xhci, td, event_trb, event, ep, status, false);
case COMP_STOP:
+ /* Did we stop at data stage? */
+ if (event_trb != ep_ring->dequeue && event_trb != td->last_trb)
+ td->urb->actual_length =
+ td->urb->transfer_buffer_length -
+ EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+ /* fall through */
+ case COMP_STOP_INVAL:
return finish_td(xhci, td, event_trb, event, ep, status, false);
default:
if (!xhci_requires_manual_halt_cleanup(xhci,
@@ -1937,7 +1963,7 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
td->urb->actual_length =
td->urb->transfer_buffer_length -
EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
- else
+ else if (!td->urb_length_set)
td->urb->actual_length = 0;
return finish_td(xhci, td, event_trb, event, ep, status, false);
@@ -2014,6 +2040,8 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
}
if ((xhci->quirks & XHCI_TRUST_TX_LENGTH))
trb_comp_code = COMP_SHORT_TX;
+ /* fallthrough */
+ case COMP_STOP_SHORT:
case COMP_SHORT_TX:
frame->status = td->urb->transfer_flags & URB_SHORT_NOT_OK ?
-EREMOTEIO : 0;
@@ -2049,6 +2077,10 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
if (trb_comp_code == COMP_SUCCESS || skip_td) {
frame->actual_length = frame->length;
td->urb->actual_length += frame->length;
+ } else if (trb_comp_code == COMP_STOP_SHORT) {
+ frame->actual_length =
+ EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+ td->urb->actual_length += frame->actual_length;
} else {
for (cur_trb = ep_ring->dequeue,
cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
@@ -2129,6 +2161,7 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
*status = 0;
}
break;
+ case COMP_STOP_SHORT:
case COMP_SHORT_TX:
if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
*status = -EREMOTEIO;
@@ -2145,8 +2178,20 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
td->urb->ep->desc.bEndpointAddress,
td->urb->transfer_buffer_length,
EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)));
+ /* Stopped - short packet completion */
+ if (trb_comp_code == COMP_STOP_SHORT) {
+ td->urb->actual_length =
+ EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+
+ if (td->urb->transfer_buffer_length <
+ td->urb->actual_length) {
+ xhci_warn(xhci, "HC gave bad length of %d bytes txed\n",
+ EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)));
+ td->urb->actual_length = 0;
+ /* status will be set by usb core for canceled urbs */
+ }
/* Fast path - was this the last TRB in the TD for this URB? */
- if (event_trb == td->last_trb) {
+ } else if (event_trb == td->last_trb) {
if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) {
td->urb->actual_length =
td->urb->transfer_buffer_length -
@@ -2230,6 +2275,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
u32 trb_comp_code;
int ret = 0;
int td_num = 0;
+ bool handling_skipped_tds = false;
slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags));
xdev = xhci->devs[slot_id];
@@ -2300,6 +2346,9 @@ static int handle_tx_event(struct xhci_hcd *xhci,
case COMP_STOP_INVAL:
xhci_dbg(xhci, "Stopped on No-op or Link TRB\n");
break;
+ case COMP_STOP_SHORT:
+ xhci_dbg(xhci, "Stopped with short packet transfer detected\n");
+ break;
case COMP_STALL:
xhci_dbg(xhci, "Stalled endpoint\n");
ep->ep_state |= EP_HALTED;
@@ -2363,6 +2412,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
ep->skip = true;
xhci_dbg(xhci, "Miss service interval error, set skip flag\n");
goto cleanup;
+ case COMP_PING_ERR:
+ ep->skip = true;
+ xhci_dbg(xhci, "No Ping response error, Skip one Isoc TD\n");
+ goto cleanup;
default:
if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
status = 0;
@@ -2499,13 +2552,18 @@ static int handle_tx_event(struct xhci_hcd *xhci,
ep, &status);
cleanup:
+
+
+ handling_skipped_tds = ep->skip &&
+ trb_comp_code != COMP_MISSED_INT &&
+ trb_comp_code != COMP_PING_ERR;
+
/*
- * Do not update event ring dequeue pointer if ep->skip is set.
- * Will roll back to continue process missed tds.
+ * Do not update event ring dequeue pointer if we're in a loop
+ * processing missed tds.
*/
- if (trb_comp_code == COMP_MISSED_INT || !ep->skip) {
+ if (!handling_skipped_tds)
inc_deq(xhci, xhci->event_ring);
- }
if (ret) {
urb = td->urb;
@@ -2540,7 +2598,7 @@ cleanup:
* Process them as short transfer until reach the td pointed by
* the event.
*/
- } while (ep->skip && trb_comp_code != COMP_MISSED_INT);
+ } while (handling_skipped_tds);
return 0;
}
@@ -2982,21 +3040,6 @@ int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
}
/*
- * The TD size is the number of bytes remaining in the TD (including this TRB),
- * right shifted by 10.
- * It must fit in bits 21:17, so it can't be bigger than 31.
- */
-static u32 xhci_td_remainder(unsigned int remainder)
-{
- u32 max = (1 << (21 - 17 + 1)) - 1;
-
- if ((remainder >> 10) >= max)
- return max << 17;
- else
- return (remainder >> 10) << 17;
-}
-
-/*
* For xHCI 1.0 host controllers, TD size is the number of max packet sized
* packets remaining in the TD (*not* including this TRB).
*
@@ -3008,30 +3051,36 @@ static u32 xhci_td_remainder(unsigned int remainder)
*
* TD size = total_packet_count - packets_transferred
*
- * It must fit in bits 21:17, so it can't be bigger than 31.
+ * For xHCI 0.96 and older, TD size field should be the remaining bytes
+ * including this TRB, right shifted by 10
+ *
+ * For all hosts it must fit in bits 21:17, so it can't be bigger than 31.
+ * This is taken care of in the TRB_TD_SIZE() macro
+ *
* The last TRB in a TD must have the TD size set to zero.
*/
-static u32 xhci_v1_0_td_remainder(int running_total, int trb_buff_len,
- unsigned int total_packet_count, struct urb *urb,
- unsigned int num_trbs_left)
+static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred,
+ int trb_buff_len, unsigned int td_total_len,
+ struct urb *urb, unsigned int num_trbs_left)
{
- int packets_transferred;
+ u32 maxp, total_packet_count;
+
+ if (xhci->hci_version < 0x100)
+ return ((td_total_len - transferred) >> 10);
+
+ maxp = GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
+ total_packet_count = DIV_ROUND_UP(td_total_len, maxp);
/* One TRB with a zero-length data packet. */
- if (num_trbs_left == 0 || (running_total == 0 && trb_buff_len == 0))
+ if (num_trbs_left == 0 || (transferred == 0 && trb_buff_len == 0) ||
+ trb_buff_len == td_total_len)
return 0;
- /* All the TRB queueing functions don't count the current TRB in
- * running_total.
- */
- packets_transferred = (running_total + trb_buff_len) /
- GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
-
- if ((total_packet_count - packets_transferred) > 31)
- return 31 << 17;
- return (total_packet_count - packets_transferred) << 17;
+ /* Queueing functions don't count the current TRB into transferred */
+ return (total_packet_count - ((transferred + trb_buff_len) / maxp));
}
+
static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
struct urb *urb, int slot_id, unsigned int ep_index)
{
@@ -3041,9 +3090,11 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
struct xhci_td *td;
struct scatterlist *sg;
int num_sgs;
- int trb_buff_len, this_sg_len, running_total;
+ int trb_buff_len, this_sg_len, running_total, ret;
unsigned int total_packet_count;
+ bool zero_length_needed;
bool first_trb;
+ int last_trb_num;
u64 addr;
bool more_trbs_coming;
@@ -3059,13 +3110,27 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
total_packet_count = DIV_ROUND_UP(urb->transfer_buffer_length,
usb_endpoint_maxp(&urb->ep->desc));
- trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id],
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
ep_index, urb->stream_id,
num_trbs, urb, 0, mem_flags);
- if (trb_buff_len < 0)
- return trb_buff_len;
+ if (ret < 0)
+ return ret;
urb_priv = urb->hcpriv;
+
+ /* Deal with URB_ZERO_PACKET - need one more td/trb */
+ zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
+ urb_priv->length == 2;
+ if (zero_length_needed) {
+ num_trbs++;
+ xhci_dbg(xhci, "Creating zero length td.\n");
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+ 1, urb, 1, mem_flags);
+ if (ret < 0)
+ return ret;
+ }
+
td = urb_priv->td[0];
/*
@@ -3095,6 +3160,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
trb_buff_len = urb->transfer_buffer_length;
first_trb = true;
+ last_trb_num = zero_length_needed ? 2 : 1;
/* Queue the first TRB, even if it's zero-length */
do {
u32 field = 0;
@@ -3112,12 +3178,15 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
/* Chain all the TRBs together; clear the chain bit in the last
* TRB to indicate it's the last TRB in the chain.
*/
- if (num_trbs > 1) {
+ if (num_trbs > last_trb_num) {
field |= TRB_CHAIN;
- } else {
- /* FIXME - add check for ZERO_PACKET flag before this */
+ } else if (num_trbs == last_trb_num) {
td->last_trb = ep_ring->enqueue;
field |= TRB_IOC;
+ } else if (zero_length_needed && num_trbs == 1) {
+ trb_buff_len = 0;
+ urb_priv->td[1]->last_trb = ep_ring->enqueue;
+ field |= TRB_IOC;
}
/* Only set interrupt on short packet for IN endpoints */
@@ -3133,17 +3202,12 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
}
/* Set the TRB length, TD size, and interrupter fields. */
- if (xhci->hci_version < 0x100) {
- remainder = xhci_td_remainder(
- urb->transfer_buffer_length -
- running_total);
- } else {
- remainder = xhci_v1_0_td_remainder(running_total,
- trb_buff_len, total_packet_count, urb,
- num_trbs - 1);
- }
+ remainder = xhci_td_remainder(xhci, running_total, trb_buff_len,
+ urb->transfer_buffer_length,
+ urb, num_trbs - 1);
+
length_field = TRB_LEN(trb_buff_len) |
- remainder |
+ TRB_TD_SIZE(remainder) |
TRB_INTR_TARGET(0);
if (num_trbs > 1)
@@ -3179,7 +3243,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
if (running_total + trb_buff_len > urb->transfer_buffer_length)
trb_buff_len =
urb->transfer_buffer_length - running_total;
- } while (running_total < urb->transfer_buffer_length);
+ } while (num_trbs > 0);
check_trb_math(urb, num_trbs, running_total);
giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
@@ -3197,7 +3261,9 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
int num_trbs;
struct xhci_generic_trb *start_trb;
bool first_trb;
+ int last_trb_num;
bool more_trbs_coming;
+ bool zero_length_needed;
int start_cycle;
u32 field, length_field;
@@ -3228,7 +3294,6 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
num_trbs++;
running_total += TRB_MAX_BUFF_SIZE;
}
- /* FIXME: this doesn't deal with URB_ZERO_PACKET - need one more */
ret = prepare_transfer(xhci, xhci->devs[slot_id],
ep_index, urb->stream_id,
@@ -3237,6 +3302,20 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
return ret;
urb_priv = urb->hcpriv;
+
+ /* Deal with URB_ZERO_PACKET - need one more td/trb */
+ zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
+ urb_priv->length == 2;
+ if (zero_length_needed) {
+ num_trbs++;
+ xhci_dbg(xhci, "Creating zero length td.\n");
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+ 1, urb, 1, mem_flags);
+ if (ret < 0)
+ return ret;
+ }
+
td = urb_priv->td[0];
/*
@@ -3258,7 +3337,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
trb_buff_len = urb->transfer_buffer_length;
first_trb = true;
-
+ last_trb_num = zero_length_needed ? 2 : 1;
/* Queue the first TRB, even if it's zero-length */
do {
u32 remainder = 0;
@@ -3275,12 +3354,15 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
/* Chain all the TRBs together; clear the chain bit in the last
* TRB to indicate it's the last TRB in the chain.
*/
- if (num_trbs > 1) {
+ if (num_trbs > last_trb_num) {
field |= TRB_CHAIN;
- } else {
- /* FIXME - add check for ZERO_PACKET flag before this */
+ } else if (num_trbs == last_trb_num) {
td->last_trb = ep_ring->enqueue;
field |= TRB_IOC;
+ } else if (zero_length_needed && num_trbs == 1) {
+ trb_buff_len = 0;
+ urb_priv->td[1]->last_trb = ep_ring->enqueue;
+ field |= TRB_IOC;
}
/* Only set interrupt on short packet for IN endpoints */
@@ -3288,17 +3370,12 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
field |= TRB_ISP;
/* Set the TRB length, TD size, and interrupter fields. */
- if (xhci->hci_version < 0x100) {
- remainder = xhci_td_remainder(
- urb->transfer_buffer_length -
- running_total);
- } else {
- remainder = xhci_v1_0_td_remainder(running_total,
- trb_buff_len, total_packet_count, urb,
- num_trbs - 1);
- }
+ remainder = xhci_td_remainder(xhci, running_total, trb_buff_len,
+ urb->transfer_buffer_length,
+ urb, num_trbs - 1);
+
length_field = TRB_LEN(trb_buff_len) |
- remainder |
+ TRB_TD_SIZE(remainder) |
TRB_INTR_TARGET(0);
if (num_trbs > 1)
@@ -3318,7 +3395,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
trb_buff_len = urb->transfer_buffer_length - running_total;
if (trb_buff_len > TRB_MAX_BUFF_SIZE)
trb_buff_len = TRB_MAX_BUFF_SIZE;
- } while (running_total < urb->transfer_buffer_length);
+ } while (num_trbs > 0);
check_trb_math(urb, num_trbs, running_total);
giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
@@ -3336,7 +3413,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
struct usb_ctrlrequest *setup;
struct xhci_generic_trb *start_trb;
int start_cycle;
- u32 field, length_field;
+ u32 field, length_field, remainder;
struct urb_priv *urb_priv;
struct xhci_td *td;
@@ -3385,8 +3462,8 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
if (start_cycle == 0)
field |= 0x1;
- /* xHCI 1.0 6.4.1.2.1: Transfer Type field */
- if (xhci->hci_version == 0x100) {
+ /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
+ if (xhci->hci_version >= 0x100) {
if (urb->transfer_buffer_length > 0) {
if (setup->bRequestType & USB_DIR_IN)
field |= TRB_TX_TYPE(TRB_DATA_IN);
@@ -3409,9 +3486,15 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
else
field = TRB_TYPE(TRB_DATA);
+ remainder = xhci_td_remainder(xhci, 0,
+ urb->transfer_buffer_length,
+ urb->transfer_buffer_length,
+ urb, 1);
+
length_field = TRB_LEN(urb->transfer_buffer_length) |
- xhci_td_remainder(urb->transfer_buffer_length) |
+ TRB_TD_SIZE(remainder) |
TRB_INTR_TARGET(0);
+
if (urb->transfer_buffer_length > 0) {
if (setup->bRequestType & USB_DIR_IN)
field |= TRB_DIR_IN;
@@ -3517,6 +3600,97 @@ static unsigned int xhci_get_last_burst_packet_count(struct xhci_hcd *xhci,
}
}
+/*
+ * Calculates Frame ID field of the isochronous TRB identifies the
+ * target frame that the Interval associated with this Isochronous
+ * Transfer Descriptor will start on. Refer to 4.11.2.5 in 1.1 spec.
+ *
+ * Returns actual frame id on success, negative value on error.
+ */
+static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci,
+ struct urb *urb, int index)
+{
+ int start_frame, ist, ret = 0;
+ int start_frame_id, end_frame_id, current_frame_id;
+
+ if (urb->dev->speed == USB_SPEED_LOW ||
+ urb->dev->speed == USB_SPEED_FULL)
+ start_frame = urb->start_frame + index * urb->interval;
+ else
+ start_frame = (urb->start_frame + index * urb->interval) >> 3;
+
+ /* Isochronous Scheduling Threshold (IST, bits 0~3 in HCSPARAMS2):
+ *
+ * If bit [3] of IST is cleared to '0', software can add a TRB no
+ * later than IST[2:0] Microframes before that TRB is scheduled to
+ * be executed.
+ * If bit [3] of IST is set to '1', software can add a TRB no later
+ * than IST[2:0] Frames before that TRB is scheduled to be executed.
+ */
+ ist = HCS_IST(xhci->hcs_params2) & 0x7;
+ if (HCS_IST(xhci->hcs_params2) & (1 << 3))
+ ist <<= 3;
+
+ /* Software shall not schedule an Isoch TD with a Frame ID value that
+ * is less than the Start Frame ID or greater than the End Frame ID,
+ * where:
+ *
+ * End Frame ID = (Current MFINDEX register value + 895 ms.) MOD 2048
+ * Start Frame ID = (Current MFINDEX register value + IST + 1) MOD 2048
+ *
+ * Both the End Frame ID and Start Frame ID values are calculated
+ * in microframes. When software determines the valid Frame ID value;
+ * The End Frame ID value should be rounded down to the nearest Frame
+ * boundary, and the Start Frame ID value should be rounded up to the
+ * nearest Frame boundary.
+ */
+ current_frame_id = readl(&xhci->run_regs->microframe_index);
+ start_frame_id = roundup(current_frame_id + ist + 1, 8);
+ end_frame_id = rounddown(current_frame_id + 895 * 8, 8);
+
+ start_frame &= 0x7ff;
+ start_frame_id = (start_frame_id >> 3) & 0x7ff;
+ end_frame_id = (end_frame_id >> 3) & 0x7ff;
+
+ xhci_dbg(xhci, "%s: index %d, reg 0x%x start_frame_id 0x%x, end_frame_id 0x%x, start_frame 0x%x\n",
+ __func__, index, readl(&xhci->run_regs->microframe_index),
+ start_frame_id, end_frame_id, start_frame);
+
+ if (start_frame_id < end_frame_id) {
+ if (start_frame > end_frame_id ||
+ start_frame < start_frame_id)
+ ret = -EINVAL;
+ } else if (start_frame_id > end_frame_id) {
+ if ((start_frame > end_frame_id &&
+ start_frame < start_frame_id))
+ ret = -EINVAL;
+ } else {
+ ret = -EINVAL;
+ }
+
+ if (index == 0) {
+ if (ret == -EINVAL || start_frame == start_frame_id) {
+ start_frame = start_frame_id + 1;
+ if (urb->dev->speed == USB_SPEED_LOW ||
+ urb->dev->speed == USB_SPEED_FULL)
+ urb->start_frame = start_frame;
+ else
+ urb->start_frame = start_frame << 3;
+ ret = 0;
+ }
+ }
+
+ if (ret) {
+ xhci_warn(xhci, "Frame ID %d (reg %d, index %d) beyond range (%d, %d)\n",
+ start_frame, current_frame_id, index,
+ start_frame_id, end_frame_id);
+ xhci_warn(xhci, "Ignore frame ID field, use SIA bit instead\n");
+ return ret;
+ }
+
+ return start_frame;
+}
+
/* This is for isoc transfer */
static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
struct urb *urb, int slot_id, unsigned int ep_index)
@@ -3533,7 +3707,9 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
u64 start_addr, addr;
int i, j;
bool more_trbs_coming;
+ struct xhci_virt_ep *xep;
+ xep = &xhci->devs[slot_id]->eps[ep_index];
ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
num_tds = urb->number_of_packets;
@@ -3581,6 +3757,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
td = urb_priv->td[i];
for (j = 0; j < trbs_per_td; j++) {
+ int frame_id = 0;
u32 remainder = 0;
field = 0;
@@ -3589,8 +3766,20 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
TRB_TLBPC(residue);
/* Queue the isoc TRB */
field |= TRB_TYPE(TRB_ISOC);
- /* Assume URB_ISO_ASAP is set */
- field |= TRB_SIA;
+
+ /* Calculate Frame ID and SIA fields */
+ if (!(urb->transfer_flags & URB_ISO_ASAP) &&
+ HCC_CFC(xhci->hcc_params)) {
+ frame_id = xhci_get_isoc_frame_id(xhci,
+ urb,
+ i);
+ if (frame_id >= 0)
+ field |= TRB_FRAME_ID(frame_id);
+ else
+ field |= TRB_SIA;
+ } else
+ field |= TRB_SIA;
+
if (i == 0) {
if (start_cycle == 0)
field |= 0x1;
@@ -3634,17 +3823,12 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
trb_buff_len = td_remain_len;
/* Set the TRB length, TD size, & interrupter fields. */
- if (xhci->hci_version < 0x100) {
- remainder = xhci_td_remainder(
- td_len - running_total);
- } else {
- remainder = xhci_v1_0_td_remainder(
- running_total, trb_buff_len,
- total_packet_count, urb,
- (trbs_per_td - j - 1));
- }
+ remainder = xhci_td_remainder(xhci, running_total,
+ trb_buff_len, td_len,
+ urb, trbs_per_td - j - 1);
+
length_field = TRB_LEN(trb_buff_len) |
- remainder |
+ TRB_TD_SIZE(remainder) |
TRB_INTR_TARGET(0);
queue_trb(xhci, ep_ring, more_trbs_coming,
@@ -3666,6 +3850,10 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
}
}
+ /* store the next frame id */
+ if (HCC_CFC(xhci->hcc_params))
+ xep->next_frame_id = urb->start_frame + num_tds * urb->interval;
+
if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) {
if (xhci->quirks & XHCI_AMD_PLL_FIX)
usb_amd_quirk_pll_disable();
@@ -3702,9 +3890,9 @@ cleanup:
/*
* Check transfer ring to guarantee there is enough room for the urb.
* Update ISO URB start_frame and interval.
- * Update interval as xhci_queue_intr_tx does. Just use xhci frame_index to
- * update the urb->start_frame by now.
- * Always assume URB_ISO_ASAP set, and NEVER use urb->start_frame as input.
+ * Update interval as xhci_queue_intr_tx does. Use xhci frame_index to
+ * update urb->start_frame if URB_ISO_ASAP is set in transfer_flags or
+ * Contiguous Frame ID is not supported by HC.
*/
int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
struct urb *urb, int slot_id, unsigned int ep_index)
@@ -3717,8 +3905,11 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
int ep_interval;
int num_tds, num_trbs, i;
int ret;
+ struct xhci_virt_ep *xep;
+ int ist;
xdev = xhci->devs[slot_id];
+ xep = &xhci->devs[slot_id]->eps[ep_index];
ep_ring = xdev->eps[ep_index].ring;
ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index);
@@ -3735,14 +3926,10 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
if (ret)
return ret;
- start_frame = readl(&xhci->run_regs->microframe_index);
- start_frame &= 0x3fff;
-
- urb->start_frame = start_frame;
- if (urb->dev->speed == USB_SPEED_LOW ||
- urb->dev->speed == USB_SPEED_FULL)
- urb->start_frame >>= 3;
-
+ /*
+ * Check interval value. This should be done before we start to
+ * calculate the start frame value.
+ */
xhci_interval = EP_INTERVAL_TO_UFRAMES(le32_to_cpu(ep_ctx->ep_info));
ep_interval = urb->interval;
/* Convert to microframes */
@@ -3763,6 +3950,42 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
urb->dev->speed == USB_SPEED_FULL)
urb->interval /= 8;
}
+
+ /* Calculate the start frame and put it in urb->start_frame. */
+ if (HCC_CFC(xhci->hcc_params) && !list_empty(&ep_ring->td_list)) {
+ if ((le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK) ==
+ EP_STATE_RUNNING) {
+ urb->start_frame = xep->next_frame_id;
+ goto skip_start_over;
+ }
+ }
+
+ start_frame = readl(&xhci->run_regs->microframe_index);
+ start_frame &= 0x3fff;
+ /*
+ * Round up to the next frame and consider the time before trb really
+ * gets scheduled by hardare.
+ */
+ ist = HCS_IST(xhci->hcs_params2) & 0x7;
+ if (HCS_IST(xhci->hcs_params2) & (1 << 3))
+ ist <<= 3;
+ start_frame += ist + XHCI_CFC_DELAY;
+ start_frame = roundup(start_frame, 8);
+
+ /*
+ * Round up to the next ESIT (Endpoint Service Interval Time) if ESIT
+ * is greate than 8 microframes.
+ */
+ if (urb->dev->speed == USB_SPEED_LOW ||
+ urb->dev->speed == USB_SPEED_FULL) {
+ start_frame = roundup(start_frame, urb->interval << 3);
+ urb->start_frame = start_frame >> 3;
+ } else {
+ start_frame = roundup(start_frame, urb->interval);
+ urb->start_frame = start_frame;
+ }
+
+skip_start_over:
ep_ring->num_trbs_free_temp = ep_ring->num_trbs_free;
return xhci_queue_isoc_tx(xhci, mem_flags, urb, slot_id, ep_index);
@@ -3784,8 +4007,11 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
{
int reserved_trbs = xhci->cmd_ring_reserved_trbs;
int ret;
- if (xhci->xhc_state & XHCI_STATE_DYING)
+
+ if (xhci->xhc_state) {
+ xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n");
return -ESHUTDOWN;
+ }
if (!command_must_succeed)
reserved_trbs++;
diff --git a/kernel/drivers/usb/host/xhci.c b/kernel/drivers/usb/host/xhci.c
index c502c2277..776d59c32 100644
--- a/kernel/drivers/usb/host/xhci.c
+++ b/kernel/drivers/usb/host/xhci.c
@@ -146,7 +146,8 @@ static int xhci_start(struct xhci_hcd *xhci)
"waited %u microseconds.\n",
XHCI_MAX_HALT_USEC);
if (!ret)
- xhci->xhc_state &= ~XHCI_STATE_HALTED;
+ xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
+
return ret;
}
@@ -174,6 +175,16 @@ int xhci_reset(struct xhci_hcd *xhci)
command |= CMD_RESET;
writel(command, &xhci->op_regs->command);
+ /* Existing Intel xHCI controllers require a delay of 1 mS,
+ * after setting the CMD_RESET bit, and before accessing any
+ * HC registers. This allows the HC to complete the
+ * reset operation and be ready for HC register access.
+ * Without this delay, the subsequent HC register access,
+ * may result in a system hang very rarely.
+ */
+ if (xhci->quirks & XHCI_INTEL_HOST)
+ udelay(1000);
+
ret = xhci_handshake(&xhci->op_regs->command,
CMD_RESET, 0, 10 * 1000 * 1000);
if (ret)
@@ -654,21 +665,6 @@ int xhci_run(struct usb_hcd *hcd)
}
EXPORT_SYMBOL_GPL(xhci_run);
-static void xhci_only_stop_hcd(struct usb_hcd *hcd)
-{
- struct xhci_hcd *xhci = hcd_to_xhci(hcd);
-
- spin_lock_irq(&xhci->lock);
- xhci_halt(xhci);
-
- /* The shared_hcd is going to be deallocated shortly (the USB core only
- * calls this function when allocation fails in usb_add_hcd(), or
- * usb_remove_hcd() is called). So we need to unset xHCI's pointer.
- */
- xhci->shared_hcd = NULL;
- spin_unlock_irq(&xhci->lock);
-}
-
/*
* Stop xHCI driver.
*
@@ -683,12 +679,14 @@ void xhci_stop(struct usb_hcd *hcd)
u32 temp;
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
- if (!usb_hcd_is_primary_hcd(hcd)) {
- xhci_only_stop_hcd(xhci->shared_hcd);
+ if (xhci->xhc_state & XHCI_STATE_HALTED)
return;
- }
+ mutex_lock(&xhci->mutex);
spin_lock_irq(&xhci->lock);
+ xhci->xhc_state |= XHCI_STATE_HALTED;
+ xhci->cmd_ring_state = CMD_RING_STATE_STOPPED;
+
/* Make sure the xHC is halted for a USB3 roothub
* (xhci_stop() could be called as part of failed init).
*/
@@ -723,6 +721,7 @@ void xhci_stop(struct usb_hcd *hcd)
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"xhci_stop completed - status = %x",
readl(&xhci->op_regs->status));
+ mutex_unlock(&xhci->mutex);
}
/*
@@ -897,6 +896,9 @@ int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup)
struct usb_hcd *hcd = xhci_to_hcd(xhci);
u32 command;
+ if (!hcd->state)
+ return 0;
+
if (hcd->state != HC_STATE_SUSPENDED ||
xhci->shared_hcd->state != HC_STATE_SUSPENDED)
return -EINVAL;
@@ -983,6 +985,9 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
int retval = 0;
bool comp_timer_running = false;
+ if (!hcd->state)
+ return 0;
+
/* Wait a bit if either of the roothubs need to settle from the
* transition into bus suspend.
*/
@@ -1340,6 +1345,11 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
if (usb_endpoint_xfer_isoc(&urb->ep->desc))
size = urb->number_of_packets;
+ else if (usb_endpoint_is_bulk_out(&urb->ep->desc) &&
+ urb->transfer_buffer_length > 0 &&
+ urb->transfer_flags & URB_ZERO_PACKET &&
+ !(urb->transfer_buffer_length % usb_endpoint_maxp(&urb->ep->desc)))
+ size = 2;
else
size = 1;
@@ -1539,7 +1549,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
"HW died, freeing TD.");
urb_priv = urb->hcpriv;
- for (i = urb_priv->td_cnt; i < urb_priv->length; i++) {
+ for (i = urb_priv->td_cnt;
+ i < urb_priv->length && xhci->devs[urb->dev->slot_id];
+ i++) {
td = urb_priv->td[i];
if (!list_empty(&td->td_list))
list_del_init(&td->td_list);
@@ -3117,7 +3129,7 @@ static u32 xhci_calculate_no_streams_bitmask(struct xhci_hcd *xhci,
}
/*
- * The USB device drivers use this function (though the HCD interface in USB
+ * The USB device drivers use this function (through the HCD interface in USB
* core) to prepare a set of bulk endpoints to use streams. Streams are used to
* coordinate mass storage command queueing across multiple endpoints (basically
* a stream ID == a task ID).
@@ -3772,8 +3784,6 @@ disable_slot:
/*
* Issue an Address Device command and optionally send a corresponding
* SetAddress request to the device.
- * We should be protected by the usb_address0_mutex in hub_wq's hub_port_init,
- * so we should only issue and wait on one address command at the same time.
*/
static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
enum xhci_setup_dev setup)
@@ -3790,6 +3800,9 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
mutex_lock(&xhci->mutex);
+ if (xhci->xhc_state) /* dying or halted */
+ goto out;
+
if (!udev->slot_id) {
xhci_dbg_trace(xhci, trace_xhci_dbg_address,
"Bad Slot ID %d", udev->slot_id);
@@ -3972,7 +3985,7 @@ int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1)
__le32 __iomem *addr;
int raw_port;
- if (hcd->speed != HCD_USB3)
+ if (hcd->speed < HCD_USB3)
addr = xhci->usb2_ports[port1 - 1];
else
addr = xhci->usb3_ports[port1 - 1];
@@ -4123,7 +4136,7 @@ int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
int hird, exit_latency;
int ret;
- if (hcd->speed == HCD_USB3 || !xhci->hw_lpm_support ||
+ if (hcd->speed >= HCD_USB3 || !xhci->hw_lpm_support ||
!udev->lpm_capable)
return -EPERM;
@@ -4240,7 +4253,7 @@ int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
int portnum = udev->portnum - 1;
- if (hcd->speed == HCD_USB3 || !xhci->sw_lpm_support ||
+ if (hcd->speed >= HCD_USB3 || !xhci->sw_lpm_support ||
!udev->lpm_capable)
return 0;
@@ -4680,7 +4693,6 @@ int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd,
{
struct xhci_hcd *xhci;
u16 mel;
- int ret;
xhci = hcd_to_xhci(hcd);
if (!xhci || !(xhci->quirks & XHCI_LPM_SUPPORT) ||
@@ -4688,10 +4700,7 @@ int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd,
return 0;
mel = calculate_max_exit_latency(udev, state, USB3_LPM_DISABLED);
- ret = xhci_change_max_exit_latency(xhci, udev, mel);
- if (ret)
- return ret;
- return 0;
+ return xhci_change_max_exit_latency(xhci, udev, mel);
}
#else /* CONFIG_PM */
@@ -4771,8 +4780,16 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG);
slot_ctx = xhci_get_slot_ctx(xhci, config_cmd->in_ctx);
slot_ctx->dev_info |= cpu_to_le32(DEV_HUB);
+ /*
+ * refer to section 6.2.2: MTT should be 0 for full speed hub,
+ * but it may be already set to 1 when setup an xHCI virtual
+ * device, so clear it anyway.
+ */
if (tt->multi)
slot_ctx->dev_info |= cpu_to_le32(DEV_MTT);
+ else if (hdev->speed == USB_SPEED_FULL)
+ slot_ctx->dev_info &= cpu_to_le32(~DEV_MTT);
+
if (xhci->hci_version > 0x95) {
xhci_dbg(xhci, "xHCI version %x needs hub "
"TT think time and number of ports\n",
@@ -4844,11 +4861,9 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
/* XHCI controllers don't stop the ep queue on short packets :| */
hcd->self.no_stop_on_short = 1;
+ xhci = hcd_to_xhci(hcd);
+
if (usb_hcd_is_primary_hcd(hcd)) {
- xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);
- if (!xhci)
- return -ENOMEM;
- *((struct xhci_hcd **) hcd->hcd_priv) = xhci;
xhci->main_hcd = hcd;
/* Mark the first roothub as being USB 2.0.
* The xHCI driver will register the USB 3.0 roothub.
@@ -4862,6 +4877,10 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
*/
hcd->has_tt = 1;
} else {
+ if (xhci->sbrn == 0x31) {
+ xhci_info(xhci, "Host supports USB 3.1 Enhanced SuperSpeed\n");
+ hcd->speed = HCD_USB31;
+ }
/* xHCI private pointer was set in xhci_pci_probe for the second
* registered roothub.
*/
@@ -4881,6 +4900,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
xhci->hcc_params = readl(&xhci->cap_regs->hc_capbase);
xhci->hci_version = HC_VERSION(xhci->hcc_params);
xhci->hcc_params = readl(&xhci->cap_regs->hcc_params);
+ if (xhci->hci_version > 0x100)
+ xhci->hcc_params2 = readl(&xhci->cap_regs->hcc_params2);
xhci_print_registers(xhci);
xhci->quirks = quirks;
@@ -4897,13 +4918,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
/* Make sure the HC is halted. */
retval = xhci_halt(xhci);
if (retval)
- goto error;
+ return retval;
xhci_dbg(xhci, "Resetting HCD\n");
/* Reset the internal HC memory state and registers. */
retval = xhci_reset(xhci);
if (retval)
- goto error;
+ return retval;
xhci_dbg(xhci, "Reset complete\n");
/* Set dma_mask and coherent_dma_mask to 64-bits,
@@ -4912,22 +4933,29 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
!dma_set_mask(dev, DMA_BIT_MASK(64))) {
xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
dma_set_coherent_mask(dev, DMA_BIT_MASK(64));
+ } else {
+ /*
+ * This is to avoid error in cases where a 32-bit USB
+ * controller is used on a 64-bit capable system.
+ */
+ retval = dma_set_mask(dev, DMA_BIT_MASK(32));
+ if (retval)
+ return retval;
+ xhci_dbg(xhci, "Enabling 32-bit DMA addresses.\n");
+ dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
}
xhci_dbg(xhci, "Calling HCD init\n");
/* Initialize HCD and host controller data structures. */
retval = xhci_init(hcd);
if (retval)
- goto error;
+ return retval;
xhci_dbg(xhci, "Called HCD init\n");
xhci_info(xhci, "hcc params 0x%08x hci version 0x%x quirks 0x%08x\n",
xhci->hcc_params, xhci->hci_version, xhci->quirks);
return 0;
-error:
- kfree(xhci);
- return retval;
}
EXPORT_SYMBOL_GPL(xhci_gen_setup);
@@ -4992,11 +5020,21 @@ static const struct hc_driver xhci_hc_driver = {
.find_raw_port_number = xhci_find_raw_port_number,
};
-void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *))
+void xhci_init_driver(struct hc_driver *drv,
+ const struct xhci_driver_overrides *over)
{
- BUG_ON(!setup_fn);
+ BUG_ON(!over);
+
+ /* Copy the generic table to drv then apply the overrides */
*drv = xhci_hc_driver;
- drv->reset = setup_fn;
+
+ if (over) {
+ drv->hcd_priv_size += over->extra_priv_size;
+ if (over->reset)
+ drv->reset = over->reset;
+ if (over->start)
+ drv->start = over->start;
+ }
}
EXPORT_SYMBOL_GPL(xhci_init_driver);
@@ -5019,10 +5057,14 @@ static int __init xhci_hcd_init(void)
BUILD_BUG_ON(sizeof(struct xhci_stream_ctx) != 4*32/8);
BUILD_BUG_ON(sizeof(union xhci_trb) != 4*32/8);
BUILD_BUG_ON(sizeof(struct xhci_erst_entry) != 4*32/8);
- BUILD_BUG_ON(sizeof(struct xhci_cap_regs) != 7*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_cap_regs) != 8*32/8);
BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8);
/* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */
BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
+
+ if (usb_disabled())
+ return -ENODEV;
+
return 0;
}
diff --git a/kernel/drivers/usb/host/xhci.h b/kernel/drivers/usb/host/xhci.h
index 0f26dd269..0b9451250 100644
--- a/kernel/drivers/usb/host/xhci.h
+++ b/kernel/drivers/usb/host/xhci.h
@@ -28,6 +28,7 @@
#include <linux/timer.h>
#include <linux/kernel.h>
#include <linux/usb/hcd.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
/* Code sharing between pci-quirks and xhci hcd */
#include "xhci-ext-caps.h"
@@ -56,6 +57,7 @@
* @hcc_params: HCCPARAMS - Capability Parameters
* @db_off: DBOFF - Doorbell array offset
* @run_regs_off: RTSOFF - Runtime register space offset
+ * @hcc_params2: HCCPARAMS2 Capability Parameters 2, xhci 1.1 only
*/
struct xhci_cap_regs {
__le32 hc_capbase;
@@ -65,6 +67,7 @@ struct xhci_cap_regs {
__le32 hcc_params;
__le32 db_off;
__le32 run_regs_off;
+ __le32 hcc_params2; /* xhci 1.1 */
/* Reserved up to (CAPLENGTH - 0x1C) */
};
@@ -119,6 +122,10 @@ struct xhci_cap_regs {
#define HCC_LTC(p) ((p) & (1 << 6))
/* true: no secondary Stream ID Support */
#define HCC_NSS(p) ((p) & (1 << 7))
+/* true: HC supports Stopped - Short Packet */
+#define HCC_SPC(p) ((p) & (1 << 9))
+/* true: HC has Contiguous Frame ID Capability */
+#define HCC_CFC(p) ((p) & (1 << 11))
/* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */
#define HCC_MAX_PSA(p) (1 << ((((p) >> 12) & 0xf) + 1))
/* Extended Capabilities pointer from PCI base - section 5.3.6 */
@@ -130,6 +137,21 @@ struct xhci_cap_regs {
/* run_regs_off bitmask - bits 0:4 reserved */
#define RTSOFF_MASK (~0x1f)
+/* HCCPARAMS2 - hcc_params2 - bitmasks */
+/* true: HC supports U3 entry Capability */
+#define HCC2_U3C(p) ((p) & (1 << 0))
+/* true: HC supports Configure endpoint command Max exit latency too large */
+#define HCC2_CMC(p) ((p) & (1 << 1))
+/* true: HC supports Force Save context Capability */
+#define HCC2_FSC(p) ((p) & (1 << 2))
+/* true: HC supports Compliance Transition Capability */
+#define HCC2_CTC(p) ((p) & (1 << 3))
+/* true: HC support Large ESIT payload Capability > 48k */
+#define HCC2_LEC(p) ((p) & (1 << 4))
+/* true: HC support Configuration Information Capability */
+#define HCC2_CIC(p) ((p) & (1 << 5))
+/* true: HC support Extended TBC Capability, Isoc burst count > 65535 */
+#define HCC2_ETC(p) ((p) & (1 << 6))
/* Number of registers per port */
#define NUM_PORT_REGS 4
@@ -265,7 +287,11 @@ struct xhci_op_regs {
/* CONFIG - Configure Register - config_reg bitmasks */
/* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */
#define MAX_DEVS(p) ((p) & 0xff)
-/* bits 8:31 - reserved and should be preserved */
+/* bit 8: U3 Entry Enabled, assert PLC when root port enters U3, xhci 1.1 */
+#define CONFIG_U3E (1 << 8)
+/* bit 9: Configuration Information Enable, xhci 1.1 */
+#define CONFIG_CIE (1 << 9)
+/* bits 10:31 - reserved and should be preserved */
/* PORTSC - Port Status and Control Register - port_status_base bitmasks */
/* true: device connected */
@@ -302,11 +328,16 @@ struct xhci_op_regs {
#define XDEV_LS (0x2 << 10)
#define XDEV_HS (0x3 << 10)
#define XDEV_SS (0x4 << 10)
+#define XDEV_SSP (0x5 << 10)
#define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0<<10))
#define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS)
#define DEV_LOWSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_LS)
#define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS)
#define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS)
+#define DEV_SUPERSPEEDPLUS(p) (((p) & DEV_SPEED_MASK) == XDEV_SSP)
+#define DEV_SUPERSPEED_ANY(p) (((p) & DEV_SPEED_MASK) >= XDEV_SS)
+#define DEV_PORT_SPEED(p) (((p) >> 10) & 0x0f)
+
/* Bits 20:23 in the Slot Context are the speed for the device */
#define SLOT_SPEED_FS (XDEV_FS << 10)
#define SLOT_SPEED_LS (XDEV_LS << 10)
@@ -390,6 +421,9 @@ struct xhci_op_regs {
#define PORT_L1DS(p) (((p) & 0xff) << 8)
#define PORT_HLE (1 << 16)
+/* USB3 Protocol PORTLI Port Link Information */
+#define PORT_RX_LANES(p) (((p) >> 16) & 0xf)
+#define PORT_TX_LANES(p) (((p) >> 20) & 0xf)
/* USB2 Protocol PORTHLPMC */
#define PORT_HIRDM(p)((p) & 3)
@@ -515,9 +549,23 @@ struct xhci_protocol_caps {
};
#define XHCI_EXT_PORT_MAJOR(x) (((x) >> 24) & 0xff)
+#define XHCI_EXT_PORT_MINOR(x) (((x) >> 16) & 0xff)
+#define XHCI_EXT_PORT_PSIC(x) (((x) >> 28) & 0x0f)
#define XHCI_EXT_PORT_OFF(x) ((x) & 0xff)
#define XHCI_EXT_PORT_COUNT(x) (((x) >> 8) & 0xff)
+#define XHCI_EXT_PORT_PSIV(x) (((x) >> 0) & 0x0f)
+#define XHCI_EXT_PORT_PSIE(x) (((x) >> 4) & 0x03)
+#define XHCI_EXT_PORT_PLT(x) (((x) >> 6) & 0x03)
+#define XHCI_EXT_PORT_PFD(x) (((x) >> 8) & 0x01)
+#define XHCI_EXT_PORT_LP(x) (((x) >> 14) & 0x03)
+#define XHCI_EXT_PORT_PSIM(x) (((x) >> 16) & 0xffff)
+
+#define PLT_MASK (0x03 << 6)
+#define PLT_SYM (0x00 << 6)
+#define PLT_ASYM_RX (0x02 << 6)
+#define PLT_ASYM_TX (0x03 << 6)
+
/**
* struct xhci_container_ctx
* @type: Type of context. Used to calculated offsets to contained contexts.
@@ -891,6 +939,8 @@ struct xhci_virt_ep {
/* Bandwidth checking storage */
struct xhci_bw_info bw_info;
struct list_head bw_endpoint_list;
+ /* Isoch Frame ID checking storage */
+ int next_frame_id;
};
enum xhci_overhead_type {
@@ -1059,8 +1109,8 @@ struct xhci_transfer_event {
#define COMP_STOP 26
/* Same as COMP_EP_STOPPED, but the transferred length in the event is invalid */
#define COMP_STOP_INVAL 27
-/* Control Abort Error - Debug Capability - control pipe aborted */
-#define COMP_DBG_ABORT 28
+/* Same as COMP_EP_STOPPED, but a short packet detected */
+#define COMP_STOP_SHORT 28
/* Max Exit Latency Too Large Error */
#define COMP_MEL_ERR 29
/* TRB type 30 reserved */
@@ -1130,6 +1180,8 @@ enum xhci_setup_dev {
/* Normal TRB fields */
/* transfer_len bitmasks - bits 0:16 */
#define TRB_LEN(p) ((p) & 0x1ffff)
+/* TD Size, packets remaining in this TD, bits 21:17 (5 bits, so max 31) */
+#define TRB_TD_SIZE(p) (min((p), (u32)31) << 17)
/* Interrupter Target - which MSI-X vector to target the completion event at */
#define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22)
#define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff)
@@ -1165,6 +1217,7 @@ enum xhci_setup_dev {
/* Isochronous TRB specific fields */
#define TRB_SIA (1<<31)
+#define TRB_FRAME_ID(p) (((p) & 0x7ff) << 20)
struct xhci_generic_trb {
__le32 field[4];
@@ -1441,6 +1494,14 @@ static inline unsigned int hcd_index(struct usb_hcd *hcd)
return 1;
}
+struct xhci_hub {
+ u8 maj_rev;
+ u8 min_rev;
+ u32 *psi; /* array of protocol speed ID entries */
+ u8 psi_count;
+ u8 psi_uid_count;
+};
+
/* There is one xhci_hcd structure per controller */
struct xhci_hcd {
struct usb_hcd *main_hcd;
@@ -1458,6 +1519,7 @@ struct xhci_hcd {
__u32 hcs_params2;
__u32 hcs_params3;
__u32 hcc_params;
+ __u32 hcc_params2;
spinlock_t lock;
@@ -1579,6 +1641,8 @@ struct xhci_hcd {
unsigned int num_usb3_ports;
/* Array of pointers to USB 2.0 PORTSC registers */
__le32 __iomem **usb2_ports;
+ struct xhci_hub usb2_rhub;
+ struct xhci_hub usb3_rhub;
unsigned int num_usb2_ports;
/* support xHCI 0.96 spec USB2 software LPM */
unsigned sw_lpm_support:1;
@@ -1594,10 +1658,26 @@ struct xhci_hcd {
#define COMP_MODE_RCVRY_MSECS 2000
};
+/* Platform specific overrides to generic XHCI hc_driver ops */
+struct xhci_driver_overrides {
+ size_t extra_priv_size;
+ int (*reset)(struct usb_hcd *hcd);
+ int (*start)(struct usb_hcd *hcd);
+};
+
+#define XHCI_CFC_DELAY 10
+
/* convert between an HCD pointer and the corresponding EHCI_HCD */
static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd)
{
- return *((struct xhci_hcd **) (hcd->hcd_priv));
+ struct usb_hcd *primary_hcd;
+
+ if (usb_hcd_is_primary_hcd(hcd))
+ primary_hcd = hcd;
+ else
+ primary_hcd = hcd->primary_hcd;
+
+ return (struct xhci_hcd *) (primary_hcd->hcd_priv);
}
static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
@@ -1628,20 +1708,12 @@ static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
static inline u64 xhci_read_64(const struct xhci_hcd *xhci,
__le64 __iomem *regs)
{
- __u32 __iomem *ptr = (__u32 __iomem *) regs;
- u64 val_lo = readl(ptr);
- u64 val_hi = readl(ptr + 1);
- return val_lo + (val_hi << 32);
+ return lo_hi_readq(regs);
}
static inline void xhci_write_64(struct xhci_hcd *xhci,
const u64 val, __le64 __iomem *regs)
{
- __u32 __iomem *ptr = (__u32 __iomem *) regs;
- u32 val_lo = lower_32_bits(val);
- u32 val_hi = upper_32_bits(val);
-
- writel(val_lo, ptr);
- writel(val_hi, ptr + 1);
+ lo_hi_writeq(val, regs);
}
static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
@@ -1751,7 +1823,8 @@ int xhci_run(struct usb_hcd *hcd);
void xhci_stop(struct usb_hcd *hcd);
void xhci_shutdown(struct usb_hcd *hcd);
int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
-void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *));
+void xhci_init_driver(struct hc_driver *drv,
+ const struct xhci_driver_overrides *over);
#ifdef CONFIG_PM
int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);