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authorYunhong Jiang <yunhong.jiang@linux.intel.com>2017-03-08 23:13:28 -0800
committerYunhong Jiang <yunhong.jiang@linux.intel.com>2017-03-08 23:36:15 -0800
commit52f993b8e89487ec9ee15a7fb4979e0f09a45b27 (patch)
treed65304486afe0bea4a311c783c0d72791c8c0aa2 /kernel/drivers/tty/serial/8250
parentc189ccac5702322ed843fe17057035b7222a59b6 (diff)
Upgrade to 4.4.50-rt62
The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it to 4.4.50-rt62. The command to achieve it is: a) Clone a git repo from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git b) Get the diff between this two changesets: git diff 640eca2901f3435e616157b11379d3223a44b391 705619beeea1b0b48219a683fd1a901a86fdaf5e where the two commits are: [yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only 640eca2901f3435e616157b11379d3223a44b391 640eca2901f3 v4.4.6-rt14 localversion-rt [yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only 705619beeea1b0b48219a683fd1a901a86fdaf5e 705619beeea1 Linux 4.4.50-rt62 localversion-rt c) One patch has been backported thus revert the patch before applying. filterdiff -p1 -x scripts/package/Makefile ~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run Upstream status: backport Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01 Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/drivers/tty/serial/8250')
-rw-r--r--kernel/drivers/tty/serial/8250/8250_dw.c2
-rw-r--r--kernel/drivers/tty/serial/8250/8250_mid.c38
-rw-r--r--kernel/drivers/tty/serial/8250/8250_pci.c142
-rw-r--r--kernel/drivers/tty/serial/8250/8250_port.c22
4 files changed, 176 insertions, 28 deletions
diff --git a/kernel/drivers/tty/serial/8250/8250_dw.c b/kernel/drivers/tty/serial/8250/8250_dw.c
index a5d319e4a..8435c3f20 100644
--- a/kernel/drivers/tty/serial/8250/8250_dw.c
+++ b/kernel/drivers/tty/serial/8250/8250_dw.c
@@ -440,7 +440,7 @@ static int dw8250_probe(struct platform_device *pdev)
}
data->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
- if (IS_ERR(data->clk) && PTR_ERR(data->clk) == -EPROBE_DEFER) {
+ if (IS_ERR(data->pclk) && PTR_ERR(data->pclk) == -EPROBE_DEFER) {
err = -EPROBE_DEFER;
goto err_clk;
}
diff --git a/kernel/drivers/tty/serial/8250/8250_mid.c b/kernel/drivers/tty/serial/8250/8250_mid.c
index 88531a36b..83b3988eb 100644
--- a/kernel/drivers/tty/serial/8250/8250_mid.c
+++ b/kernel/drivers/tty/serial/8250/8250_mid.c
@@ -14,6 +14,7 @@
#include <linux/pci.h>
#include <linux/dma/hsu.h>
+#include <linux/8250_pci.h>
#include "8250.h"
@@ -24,6 +25,7 @@
#define PCI_DEVICE_ID_INTEL_DNV_UART 0x19d8
/* Intel MID Specific registers */
+#define INTEL_MID_UART_DNV_FISR 0x08
#define INTEL_MID_UART_PS 0x30
#define INTEL_MID_UART_MUL 0x34
#define INTEL_MID_UART_DIV 0x38
@@ -31,6 +33,7 @@
struct mid8250;
struct mid8250_board {
+ unsigned int flags;
unsigned long freq;
unsigned int base_baud;
int (*setup)(struct mid8250 *, struct uart_port *p);
@@ -88,16 +91,16 @@ static int tng_setup(struct mid8250 *mid, struct uart_port *p)
static int dnv_handle_irq(struct uart_port *p)
{
struct mid8250 *mid = p->private_data;
- int ret;
-
- ret = hsu_dma_irq(&mid->dma_chip, 0);
- ret |= hsu_dma_irq(&mid->dma_chip, 1);
-
- /* For now, letting the HW generate separate interrupt for the UART */
- if (ret)
- return ret;
-
- return serial8250_handle_irq(p, serial_port_in(p, UART_IIR));
+ unsigned int fisr = serial_port_in(p, INTEL_MID_UART_DNV_FISR);
+ int ret = IRQ_NONE;
+
+ if (fisr & BIT(2))
+ ret |= hsu_dma_irq(&mid->dma_chip, 1);
+ if (fisr & BIT(1))
+ ret |= hsu_dma_irq(&mid->dma_chip, 0);
+ if (fisr & BIT(0))
+ ret |= serial8250_handle_irq(p, serial_port_in(p, UART_IIR));
+ return ret;
}
#define DNV_DMA_CHAN_OFFSET 0x80
@@ -106,12 +109,13 @@ static int dnv_setup(struct mid8250 *mid, struct uart_port *p)
{
struct hsu_dma_chip *chip = &mid->dma_chip;
struct pci_dev *pdev = to_pci_dev(p->dev);
+ unsigned int bar = FL_GET_BASE(mid->board->flags);
int ret;
chip->dev = &pdev->dev;
chip->irq = pdev->irq;
chip->regs = p->membase;
- chip->length = pci_resource_len(pdev, 0);
+ chip->length = pci_resource_len(pdev, bar);
chip->offset = DNV_DMA_CHAN_OFFSET;
/* Falling back to PIO mode if DMA probing fails */
@@ -145,6 +149,9 @@ static void mid8250_set_termios(struct uart_port *p,
unsigned long w = BIT(24) - 1;
unsigned long mul, div;
+ /* Gracefully handle the B0 case: fall back to B9600 */
+ fuart = fuart ? fuart : 9600 * 16;
+
if (mid->board->freq < fuart) {
/* Find prescaler value that satisfies Fuart < Fref */
if (mid->board->freq > baud)
@@ -217,6 +224,7 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct uart_8250_port uart;
struct mid8250 *mid;
+ unsigned int bar;
int ret;
ret = pcim_enable_device(pdev);
@@ -230,6 +238,7 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return -ENOMEM;
mid->board = (struct mid8250_board *)id->driver_data;
+ bar = FL_GET_BASE(mid->board->flags);
memset(&uart, 0, sizeof(struct uart_8250_port));
@@ -242,8 +251,8 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
uart.port.flags = UPF_SHARE_IRQ | UPF_FIXED_PORT | UPF_FIXED_TYPE;
uart.port.set_termios = mid8250_set_termios;
- uart.port.mapbase = pci_resource_start(pdev, 0);
- uart.port.membase = pcim_iomap(pdev, 0, 0);
+ uart.port.mapbase = pci_resource_start(pdev, bar);
+ uart.port.membase = pcim_iomap(pdev, bar, 0);
if (!uart.port.membase)
return -ENOMEM;
@@ -282,18 +291,21 @@ static void mid8250_remove(struct pci_dev *pdev)
}
static const struct mid8250_board pnw_board = {
+ .flags = FL_BASE0,
.freq = 50000000,
.base_baud = 115200,
.setup = pnw_setup,
};
static const struct mid8250_board tng_board = {
+ .flags = FL_BASE0,
.freq = 38400000,
.base_baud = 1843200,
.setup = tng_setup,
};
static const struct mid8250_board dnv_board = {
+ .flags = FL_BASE1,
.freq = 133333333,
.base_baud = 115200,
.setup = dnv_setup,
diff --git a/kernel/drivers/tty/serial/8250/8250_pci.c b/kernel/drivers/tty/serial/8250/8250_pci.c
index 7cd6f9a90..029de3f99 100644
--- a/kernel/drivers/tty/serial/8250/8250_pci.c
+++ b/kernel/drivers/tty/serial/8250/8250_pci.c
@@ -1401,6 +1401,9 @@ byt_set_termios(struct uart_port *p, struct ktermios *termios,
unsigned long m, n;
u32 reg;
+ /* Gracefully handle the B0 case: fall back to B9600 */
+ fuart = fuart ? fuart : 9600 * 16;
+
/* Get Fuart closer to Fref */
fuart *= rounddown_pow_of_two(fref / fuart);
@@ -1949,6 +1952,43 @@ pci_wch_ch38x_setup(struct serial_private *priv,
#define PCI_DEVICE_ID_PERICOM_PI7C9X7954 0x7954
#define PCI_DEVICE_ID_PERICOM_PI7C9X7958 0x7958
+#define PCI_VENDOR_ID_ACCESIO 0x494f
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB 0x1051
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S 0x1053
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB 0x105C
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S 0x105E
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB 0x1091
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2 0x1093
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB 0x1099
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4 0x109B
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB 0x10D1
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM 0x10D3
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB 0x10DA
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM 0x10DC
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1 0x1108
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2 0x1110
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2 0x1111
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4 0x1118
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4 0x1119
+#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S 0x1152
+#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S 0x115A
+#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2 0x1190
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2 0x1191
+#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4 0x1198
+#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4 0x1199
+#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM 0x11D0
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4 0x105A
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4 0x105B
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8 0x106A
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8 0x106B
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4 0x1098
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8 0x10A9
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM 0x10D9
+#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM 0x10E9
+#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM 0x11D8
+
+
+
/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588
@@ -5117,6 +5157,108 @@ static struct pci_device_id serial_pci_tbl[] = {
0,
0, pbn_pericom_PI7C9X7958 },
/*
+ * ACCES I/O Products quad
+ */
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7954 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_pericom_PI7C9X7958 },
+ /*
* Topic TP560 Data/Fax/Voice 56k modem (reported by Evan Clarke)
*/
{ PCI_VENDOR_ID_TOPIC, PCI_DEVICE_ID_TOPIC_TP560,
diff --git a/kernel/drivers/tty/serial/8250/8250_port.c b/kernel/drivers/tty/serial/8250/8250_port.c
index 5568d70ee..a0b9e8546 100644
--- a/kernel/drivers/tty/serial/8250/8250_port.c
+++ b/kernel/drivers/tty/serial/8250/8250_port.c
@@ -714,22 +714,16 @@ static int size_fifo(struct uart_8250_port *up)
*/
static unsigned int autoconfig_read_divisor_id(struct uart_8250_port *p)
{
- unsigned char old_dll, old_dlm, old_lcr;
- unsigned int id;
+ unsigned char old_lcr;
+ unsigned int id, old_dl;
old_lcr = serial_in(p, UART_LCR);
serial_out(p, UART_LCR, UART_LCR_CONF_MODE_A);
+ old_dl = serial_dl_read(p);
+ serial_dl_write(p, 0);
+ id = serial_dl_read(p);
+ serial_dl_write(p, old_dl);
- old_dll = serial_in(p, UART_DLL);
- old_dlm = serial_in(p, UART_DLM);
-
- serial_out(p, UART_DLL, 0);
- serial_out(p, UART_DLM, 0);
-
- id = serial_in(p, UART_DLL) | serial_in(p, UART_DLM) << 8;
-
- serial_out(p, UART_DLL, old_dll);
- serial_out(p, UART_DLM, old_dlm);
serial_out(p, UART_LCR, old_lcr);
return id;
@@ -2850,9 +2844,9 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
serial8250_rpm_get(up);
- if (port->sysrq)
+ if (port->sysrq || oops_in_progress)
locked = 0;
- else if (oops_in_progress || in_kdb_printk())
+ else if (in_kdb_printk())
locked = spin_trylock_irqsave(&port->lock, flags);
else
spin_lock_irqsave(&port->lock, flags);