diff options
author | 2015-08-04 12:17:53 -0700 | |
---|---|---|
committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/ipack/carriers | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/ipack/carriers')
-rw-r--r-- | kernel/drivers/ipack/carriers/Kconfig | 7 | ||||
-rw-r--r-- | kernel/drivers/ipack/carriers/Makefile | 1 | ||||
-rw-r--r-- | kernel/drivers/ipack/carriers/tpci200.c | 640 | ||||
-rw-r--r-- | kernel/drivers/ipack/carriers/tpci200.h | 167 |
4 files changed, 815 insertions, 0 deletions
diff --git a/kernel/drivers/ipack/carriers/Kconfig b/kernel/drivers/ipack/carriers/Kconfig new file mode 100644 index 000000000..922ff5c35 --- /dev/null +++ b/kernel/drivers/ipack/carriers/Kconfig @@ -0,0 +1,7 @@ +config BOARD_TPCI200 + tristate "Support for the TEWS TPCI-200 IndustryPack carrier board" + depends on IPACK_BUS + depends on PCI + help + This driver adds support for the TEWS TPCI200 IndustryPack carrier board. + default n diff --git a/kernel/drivers/ipack/carriers/Makefile b/kernel/drivers/ipack/carriers/Makefile new file mode 100644 index 000000000..d8b764593 --- /dev/null +++ b/kernel/drivers/ipack/carriers/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_BOARD_TPCI200) += tpci200.o diff --git a/kernel/drivers/ipack/carriers/tpci200.c b/kernel/drivers/ipack/carriers/tpci200.c new file mode 100644 index 000000000..9b23843dc --- /dev/null +++ b/kernel/drivers/ipack/carriers/tpci200.c @@ -0,0 +1,640 @@ +/** + * tpci200.c + * + * driver for the TEWS TPCI-200 device + * + * Copyright (C) 2009-2012 CERN (www.cern.ch) + * Author: Nicolas Serafini, EIC2 SA + * Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com> + * + * 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; version 2 of the License. + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include "tpci200.h" + +static const u16 tpci200_status_timeout[] = { + TPCI200_A_TIMEOUT, + TPCI200_B_TIMEOUT, + TPCI200_C_TIMEOUT, + TPCI200_D_TIMEOUT, +}; + +static const u16 tpci200_status_error[] = { + TPCI200_A_ERROR, + TPCI200_B_ERROR, + TPCI200_C_ERROR, + TPCI200_D_ERROR, +}; + +static const size_t tpci200_space_size[IPACK_SPACE_COUNT] = { + [IPACK_IO_SPACE] = TPCI200_IO_SPACE_SIZE, + [IPACK_ID_SPACE] = TPCI200_ID_SPACE_SIZE, + [IPACK_INT_SPACE] = TPCI200_INT_SPACE_SIZE, + [IPACK_MEM8_SPACE] = TPCI200_MEM8_SPACE_SIZE, + [IPACK_MEM16_SPACE] = TPCI200_MEM16_SPACE_SIZE, +}; + +static const size_t tpci200_space_interval[IPACK_SPACE_COUNT] = { + [IPACK_IO_SPACE] = TPCI200_IO_SPACE_INTERVAL, + [IPACK_ID_SPACE] = TPCI200_ID_SPACE_INTERVAL, + [IPACK_INT_SPACE] = TPCI200_INT_SPACE_INTERVAL, + [IPACK_MEM8_SPACE] = TPCI200_MEM8_SPACE_INTERVAL, + [IPACK_MEM16_SPACE] = TPCI200_MEM16_SPACE_INTERVAL, +}; + +static struct tpci200_board *check_slot(struct ipack_device *dev) +{ + struct tpci200_board *tpci200; + + if (dev == NULL) + return NULL; + + + tpci200 = dev_get_drvdata(dev->bus->parent); + + if (tpci200 == NULL) { + dev_info(&dev->dev, "carrier board not found\n"); + return NULL; + } + + if (dev->slot >= TPCI200_NB_SLOT) { + dev_info(&dev->dev, + "Slot [%d:%d] doesn't exist! Last tpci200 slot is %d.\n", + dev->bus->bus_nr, dev->slot, TPCI200_NB_SLOT-1); + return NULL; + } + + return tpci200; +} + +static void tpci200_clear_mask(struct tpci200_board *tpci200, + __le16 __iomem *addr, u16 mask) +{ + unsigned long flags; + spin_lock_irqsave(&tpci200->regs_lock, flags); + iowrite16(ioread16(addr) & (~mask), addr); + spin_unlock_irqrestore(&tpci200->regs_lock, flags); +} + +static void tpci200_set_mask(struct tpci200_board *tpci200, + __le16 __iomem *addr, u16 mask) +{ + unsigned long flags; + spin_lock_irqsave(&tpci200->regs_lock, flags); + iowrite16(ioread16(addr) | mask, addr); + spin_unlock_irqrestore(&tpci200->regs_lock, flags); +} + +static void tpci200_unregister(struct tpci200_board *tpci200) +{ + free_irq(tpci200->info->pdev->irq, (void *) tpci200); + + pci_iounmap(tpci200->info->pdev, tpci200->info->interface_regs); + pci_iounmap(tpci200->info->pdev, tpci200->info->cfg_regs); + + pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR); + pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR); + pci_release_region(tpci200->info->pdev, TPCI200_MEM16_SPACE_BAR); + pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR); + pci_release_region(tpci200->info->pdev, TPCI200_CFG_MEM_BAR); + + pci_disable_device(tpci200->info->pdev); + pci_dev_put(tpci200->info->pdev); +} + +static void tpci200_enable_irq(struct tpci200_board *tpci200, + int islot) +{ + tpci200_set_mask(tpci200, + &tpci200->info->interface_regs->control[islot], + TPCI200_INT0_EN | TPCI200_INT1_EN); +} + +static void tpci200_disable_irq(struct tpci200_board *tpci200, + int islot) +{ + tpci200_clear_mask(tpci200, + &tpci200->info->interface_regs->control[islot], + TPCI200_INT0_EN | TPCI200_INT1_EN); +} + +static irqreturn_t tpci200_slot_irq(struct slot_irq *slot_irq) +{ + irqreturn_t ret; + + if (!slot_irq) + return -ENODEV; + ret = slot_irq->handler(slot_irq->arg); + + return ret; +} + +static irqreturn_t tpci200_interrupt(int irq, void *dev_id) +{ + struct tpci200_board *tpci200 = (struct tpci200_board *) dev_id; + struct slot_irq *slot_irq; + irqreturn_t ret; + u16 status_reg; + int i; + + /* Read status register */ + status_reg = ioread16(&tpci200->info->interface_regs->status); + + /* Did we cause the interrupt? */ + if (!(status_reg & TPCI200_SLOT_INT_MASK)) + return IRQ_NONE; + + /* callback to the IRQ handler for the corresponding slot */ + rcu_read_lock(); + for (i = 0; i < TPCI200_NB_SLOT; i++) { + if (!(status_reg & ((TPCI200_A_INT0 | TPCI200_A_INT1) << (2 * i)))) + continue; + slot_irq = rcu_dereference(tpci200->slots[i].irq); + ret = tpci200_slot_irq(slot_irq); + if (ret == -ENODEV) { + dev_info(&tpci200->info->pdev->dev, + "No registered ISR for slot [%d:%d]!. IRQ will be disabled.\n", + tpci200->number, i); + tpci200_disable_irq(tpci200, i); + } + } + rcu_read_unlock(); + + return IRQ_HANDLED; +} + +static int tpci200_free_irq(struct ipack_device *dev) +{ + struct slot_irq *slot_irq; + struct tpci200_board *tpci200; + + tpci200 = check_slot(dev); + if (tpci200 == NULL) + return -EINVAL; + + if (mutex_lock_interruptible(&tpci200->mutex)) + return -ERESTARTSYS; + + if (tpci200->slots[dev->slot].irq == NULL) { + mutex_unlock(&tpci200->mutex); + return -EINVAL; + } + + tpci200_disable_irq(tpci200, dev->slot); + slot_irq = tpci200->slots[dev->slot].irq; + /* uninstall handler */ + RCU_INIT_POINTER(tpci200->slots[dev->slot].irq, NULL); + synchronize_rcu(); + kfree(slot_irq); + mutex_unlock(&tpci200->mutex); + return 0; +} + +static int tpci200_request_irq(struct ipack_device *dev, + irqreturn_t (*handler)(void *), void *arg) +{ + int res = 0; + struct slot_irq *slot_irq; + struct tpci200_board *tpci200; + + tpci200 = check_slot(dev); + if (tpci200 == NULL) + return -EINVAL; + + if (mutex_lock_interruptible(&tpci200->mutex)) + return -ERESTARTSYS; + + if (tpci200->slots[dev->slot].irq != NULL) { + dev_err(&dev->dev, + "Slot [%d:%d] IRQ already registered !\n", + dev->bus->bus_nr, + dev->slot); + res = -EINVAL; + goto out_unlock; + } + + slot_irq = kzalloc(sizeof(struct slot_irq), GFP_KERNEL); + if (slot_irq == NULL) { + dev_err(&dev->dev, + "Slot [%d:%d] unable to allocate memory for IRQ !\n", + dev->bus->bus_nr, dev->slot); + res = -ENOMEM; + goto out_unlock; + } + + /* + * WARNING: Setup Interrupt Vector in the IndustryPack device + * before an IRQ request. + * Read the User Manual of your IndustryPack device to know + * where to write the vector in memory. + */ + slot_irq->handler = handler; + slot_irq->arg = arg; + slot_irq->holder = dev; + + rcu_assign_pointer(tpci200->slots[dev->slot].irq, slot_irq); + tpci200_enable_irq(tpci200, dev->slot); + +out_unlock: + mutex_unlock(&tpci200->mutex); + return res; +} + +static int tpci200_register(struct tpci200_board *tpci200) +{ + int i; + int res; + phys_addr_t ioidint_base; + unsigned short slot_ctrl; + + if (pci_enable_device(tpci200->info->pdev) < 0) + return -ENODEV; + + /* Request IP interface register (Bar 2) */ + res = pci_request_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR, + "Carrier IP interface registers"); + if (res) { + dev_err(&tpci200->info->pdev->dev, + "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 2 !", + tpci200->info->pdev->bus->number, + tpci200->info->pdev->devfn); + goto out_disable_pci; + } + + /* Request IO ID INT space (Bar 3) */ + res = pci_request_region(tpci200->info->pdev, + TPCI200_IO_ID_INT_SPACES_BAR, + "Carrier IO ID INT space"); + if (res) { + dev_err(&tpci200->info->pdev->dev, + "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 3 !", + tpci200->info->pdev->bus->number, + tpci200->info->pdev->devfn); + goto out_release_ip_space; + } + + /* Request MEM8 space (Bar 5) */ + res = pci_request_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR, + "Carrier MEM8 space"); + if (res) { + dev_err(&tpci200->info->pdev->dev, + "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 5!", + tpci200->info->pdev->bus->number, + tpci200->info->pdev->devfn); + goto out_release_ioid_int_space; + } + + /* Request MEM16 space (Bar 4) */ + res = pci_request_region(tpci200->info->pdev, TPCI200_MEM16_SPACE_BAR, + "Carrier MEM16 space"); + if (res) { + dev_err(&tpci200->info->pdev->dev, + "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 4!", + tpci200->info->pdev->bus->number, + tpci200->info->pdev->devfn); + goto out_release_mem8_space; + } + + /* Map internal tpci200 driver user space */ + tpci200->info->interface_regs = + ioremap_nocache(pci_resource_start(tpci200->info->pdev, + TPCI200_IP_INTERFACE_BAR), + TPCI200_IFACE_SIZE); + + /* Initialize lock that protects interface_regs */ + spin_lock_init(&tpci200->regs_lock); + + ioidint_base = pci_resource_start(tpci200->info->pdev, + TPCI200_IO_ID_INT_SPACES_BAR); + tpci200->mod_mem[IPACK_IO_SPACE] = ioidint_base + TPCI200_IO_SPACE_OFF; + tpci200->mod_mem[IPACK_ID_SPACE] = ioidint_base + TPCI200_ID_SPACE_OFF; + tpci200->mod_mem[IPACK_INT_SPACE] = + ioidint_base + TPCI200_INT_SPACE_OFF; + tpci200->mod_mem[IPACK_MEM8_SPACE] = + pci_resource_start(tpci200->info->pdev, + TPCI200_MEM8_SPACE_BAR); + tpci200->mod_mem[IPACK_MEM16_SPACE] = + pci_resource_start(tpci200->info->pdev, + TPCI200_MEM16_SPACE_BAR); + + /* Set the default parameters of the slot + * INT0 disabled, level sensitive + * INT1 disabled, level sensitive + * error interrupt disabled + * timeout interrupt disabled + * recover time disabled + * clock rate 8 MHz + */ + slot_ctrl = 0; + for (i = 0; i < TPCI200_NB_SLOT; i++) + writew(slot_ctrl, &tpci200->info->interface_regs->control[i]); + + res = request_irq(tpci200->info->pdev->irq, + tpci200_interrupt, IRQF_SHARED, + KBUILD_MODNAME, (void *) tpci200); + if (res) { + dev_err(&tpci200->info->pdev->dev, + "(bn 0x%X, sn 0x%X) unable to register IRQ !", + tpci200->info->pdev->bus->number, + tpci200->info->pdev->devfn); + goto out_release_ioid_int_space; + } + + return 0; + +out_release_mem8_space: + pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR); +out_release_ioid_int_space: + pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR); +out_release_ip_space: + pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR); +out_disable_pci: + pci_disable_device(tpci200->info->pdev); + return res; +} + +static int tpci200_get_clockrate(struct ipack_device *dev) +{ + struct tpci200_board *tpci200 = check_slot(dev); + __le16 __iomem *addr; + + if (!tpci200) + return -ENODEV; + + addr = &tpci200->info->interface_regs->control[dev->slot]; + return (ioread16(addr) & TPCI200_CLK32) ? 32 : 8; +} + +static int tpci200_set_clockrate(struct ipack_device *dev, int mherz) +{ + struct tpci200_board *tpci200 = check_slot(dev); + __le16 __iomem *addr; + + if (!tpci200) + return -ENODEV; + + addr = &tpci200->info->interface_regs->control[dev->slot]; + + switch (mherz) { + case 8: + tpci200_clear_mask(tpci200, addr, TPCI200_CLK32); + break; + case 32: + tpci200_set_mask(tpci200, addr, TPCI200_CLK32); + break; + default: + return -EINVAL; + } + return 0; +} + +static int tpci200_get_error(struct ipack_device *dev) +{ + struct tpci200_board *tpci200 = check_slot(dev); + __le16 __iomem *addr; + u16 mask; + + if (!tpci200) + return -ENODEV; + + addr = &tpci200->info->interface_regs->status; + mask = tpci200_status_error[dev->slot]; + return (ioread16(addr) & mask) ? 1 : 0; +} + +static int tpci200_get_timeout(struct ipack_device *dev) +{ + struct tpci200_board *tpci200 = check_slot(dev); + __le16 __iomem *addr; + u16 mask; + + if (!tpci200) + return -ENODEV; + + addr = &tpci200->info->interface_regs->status; + mask = tpci200_status_timeout[dev->slot]; + + return (ioread16(addr) & mask) ? 1 : 0; +} + +static int tpci200_reset_timeout(struct ipack_device *dev) +{ + struct tpci200_board *tpci200 = check_slot(dev); + __le16 __iomem *addr; + u16 mask; + + if (!tpci200) + return -ENODEV; + + addr = &tpci200->info->interface_regs->status; + mask = tpci200_status_timeout[dev->slot]; + + iowrite16(mask, addr); + return 0; +} + +static void tpci200_uninstall(struct tpci200_board *tpci200) +{ + tpci200_unregister(tpci200); + kfree(tpci200->slots); +} + +static const struct ipack_bus_ops tpci200_bus_ops = { + .request_irq = tpci200_request_irq, + .free_irq = tpci200_free_irq, + .get_clockrate = tpci200_get_clockrate, + .set_clockrate = tpci200_set_clockrate, + .get_error = tpci200_get_error, + .get_timeout = tpci200_get_timeout, + .reset_timeout = tpci200_reset_timeout, +}; + +static int tpci200_install(struct tpci200_board *tpci200) +{ + int res; + + tpci200->slots = kzalloc( + TPCI200_NB_SLOT * sizeof(struct tpci200_slot), GFP_KERNEL); + if (tpci200->slots == NULL) + return -ENOMEM; + + res = tpci200_register(tpci200); + if (res) { + kfree(tpci200->slots); + tpci200->slots = NULL; + return res; + } + + mutex_init(&tpci200->mutex); + return 0; +} + +static void tpci200_release_device(struct ipack_device *dev) +{ + kfree(dev); +} + +static int tpci200_create_device(struct tpci200_board *tpci200, int i) +{ + int ret; + enum ipack_space space; + struct ipack_device *dev = + kzalloc(sizeof(struct ipack_device), GFP_KERNEL); + if (!dev) + return -ENOMEM; + dev->slot = i; + dev->bus = tpci200->info->ipack_bus; + dev->release = tpci200_release_device; + + for (space = 0; space < IPACK_SPACE_COUNT; space++) { + dev->region[space].start = + tpci200->mod_mem[space] + + tpci200_space_interval[space] * i; + dev->region[space].size = tpci200_space_size[space]; + } + + ret = ipack_device_init(dev); + if (ret < 0) { + ipack_put_device(dev); + return ret; + } + + ret = ipack_device_add(dev); + if (ret < 0) + ipack_put_device(dev); + + return ret; +} + +static int tpci200_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + int ret, i; + struct tpci200_board *tpci200; + u32 reg32; + + tpci200 = kzalloc(sizeof(struct tpci200_board), GFP_KERNEL); + if (!tpci200) + return -ENOMEM; + + tpci200->info = kzalloc(sizeof(struct tpci200_infos), GFP_KERNEL); + if (!tpci200->info) { + ret = -ENOMEM; + goto out_err_info; + } + + pci_dev_get(pdev); + + /* Obtain a mapping of the carrier's PCI configuration registers */ + ret = pci_request_region(pdev, TPCI200_CFG_MEM_BAR, + KBUILD_MODNAME " Configuration Memory"); + if (ret) { + dev_err(&pdev->dev, "Failed to allocate PCI Configuration Memory"); + ret = -EBUSY; + goto out_err_pci_request; + } + tpci200->info->cfg_regs = ioremap_nocache( + pci_resource_start(pdev, TPCI200_CFG_MEM_BAR), + pci_resource_len(pdev, TPCI200_CFG_MEM_BAR)); + if (!tpci200->info->cfg_regs) { + dev_err(&pdev->dev, "Failed to map PCI Configuration Memory"); + ret = -EFAULT; + goto out_err_ioremap; + } + + /* Disable byte swapping for 16 bit IP module access. This will ensure + * that the Industrypack big endian byte order is preserved by the + * carrier. */ + reg32 = ioread32(tpci200->info->cfg_regs + LAS1_DESC); + reg32 |= 1 << LAS_BIT_BIGENDIAN; + iowrite32(reg32, tpci200->info->cfg_regs + LAS1_DESC); + + reg32 = ioread32(tpci200->info->cfg_regs + LAS2_DESC); + reg32 |= 1 << LAS_BIT_BIGENDIAN; + iowrite32(reg32, tpci200->info->cfg_regs + LAS2_DESC); + + /* Save struct pci_dev pointer */ + tpci200->info->pdev = pdev; + tpci200->info->id_table = (struct pci_device_id *)id; + + /* register the device and initialize it */ + ret = tpci200_install(tpci200); + if (ret) { + dev_err(&pdev->dev, "error during tpci200 install\n"); + ret = -ENODEV; + goto out_err_install; + } + + /* Register the carrier in the industry pack bus driver */ + tpci200->info->ipack_bus = ipack_bus_register(&pdev->dev, + TPCI200_NB_SLOT, + &tpci200_bus_ops, + THIS_MODULE); + if (!tpci200->info->ipack_bus) { + dev_err(&pdev->dev, + "error registering the carrier on ipack driver\n"); + ret = -EFAULT; + goto out_err_bus_register; + } + + /* save the bus number given by ipack to logging purpose */ + tpci200->number = tpci200->info->ipack_bus->bus_nr; + dev_set_drvdata(&pdev->dev, tpci200); + + for (i = 0; i < TPCI200_NB_SLOT; i++) + tpci200_create_device(tpci200, i); + return 0; + +out_err_bus_register: + tpci200_uninstall(tpci200); +out_err_install: + iounmap(tpci200->info->cfg_regs); +out_err_ioremap: + pci_release_region(pdev, TPCI200_CFG_MEM_BAR); +out_err_pci_request: + pci_dev_put(pdev); + kfree(tpci200->info); +out_err_info: + kfree(tpci200); + return ret; +} + +static void __tpci200_pci_remove(struct tpci200_board *tpci200) +{ + ipack_bus_unregister(tpci200->info->ipack_bus); + tpci200_uninstall(tpci200); + + kfree(tpci200->info); + kfree(tpci200); +} + +static void tpci200_pci_remove(struct pci_dev *dev) +{ + struct tpci200_board *tpci200 = pci_get_drvdata(dev); + + __tpci200_pci_remove(tpci200); +} + +static const struct pci_device_id tpci200_idtable[] = { + { TPCI200_VENDOR_ID, TPCI200_DEVICE_ID, TPCI200_SUBVENDOR_ID, + TPCI200_SUBDEVICE_ID }, + { 0, }, +}; + +MODULE_DEVICE_TABLE(pci, tpci200_idtable); + +static struct pci_driver tpci200_pci_drv = { + .name = "tpci200", + .id_table = tpci200_idtable, + .probe = tpci200_pci_probe, + .remove = tpci200_pci_remove, +}; + +module_pci_driver(tpci200_pci_drv); + +MODULE_DESCRIPTION("TEWS TPCI-200 device driver"); +MODULE_LICENSE("GPL"); diff --git a/kernel/drivers/ipack/carriers/tpci200.h b/kernel/drivers/ipack/carriers/tpci200.h new file mode 100644 index 000000000..a7a151dab --- /dev/null +++ b/kernel/drivers/ipack/carriers/tpci200.h @@ -0,0 +1,167 @@ +/** + * tpci200.h + * + * driver for the carrier TEWS TPCI-200 + * + * Copyright (C) 2009-2012 CERN (www.cern.ch) + * Author: Nicolas Serafini, EIC2 SA + * Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com> + * + * 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; version 2 of the License. + */ + +#ifndef _TPCI200_H_ +#define _TPCI200_H_ + +#include <linux/limits.h> +#include <linux/pci.h> +#include <linux/spinlock.h> +#include <linux/swab.h> +#include <linux/io.h> +#include <linux/ipack.h> + +#define TPCI200_NB_SLOT 0x4 +#define TPCI200_NB_BAR 0x6 + +#define TPCI200_VENDOR_ID 0x1498 +#define TPCI200_DEVICE_ID 0x30C8 +#define TPCI200_SUBVENDOR_ID 0x1498 +#define TPCI200_SUBDEVICE_ID 0x300A + +#define TPCI200_CFG_MEM_BAR 0 +#define TPCI200_IP_INTERFACE_BAR 2 +#define TPCI200_IO_ID_INT_SPACES_BAR 3 +#define TPCI200_MEM16_SPACE_BAR 4 +#define TPCI200_MEM8_SPACE_BAR 5 + +struct tpci200_regs { + __le16 revision; + /* writes to control should occur with the mutex held to protect + * read-modify-write operations */ + __le16 control[4]; + __le16 reset; + __le16 status; + u8 reserved[242]; +} __packed; + +#define TPCI200_IFACE_SIZE 0x100 + +#define TPCI200_IO_SPACE_OFF 0x0000 +#define TPCI200_IO_SPACE_INTERVAL 0x0100 +#define TPCI200_IO_SPACE_SIZE 0x0080 +#define TPCI200_ID_SPACE_OFF 0x0080 +#define TPCI200_ID_SPACE_INTERVAL 0x0100 +#define TPCI200_ID_SPACE_SIZE 0x0040 +#define TPCI200_INT_SPACE_OFF 0x00C0 +#define TPCI200_INT_SPACE_INTERVAL 0x0100 +#define TPCI200_INT_SPACE_SIZE 0x0040 +#define TPCI200_IOIDINT_SIZE 0x0400 + +#define TPCI200_MEM8_SPACE_INTERVAL 0x00400000 +#define TPCI200_MEM8_SPACE_SIZE 0x00400000 +#define TPCI200_MEM16_SPACE_INTERVAL 0x00800000 +#define TPCI200_MEM16_SPACE_SIZE 0x00800000 + +/* control field in tpci200_regs */ +#define TPCI200_INT0_EN 0x0040 +#define TPCI200_INT1_EN 0x0080 +#define TPCI200_INT0_EDGE 0x0010 +#define TPCI200_INT1_EDGE 0x0020 +#define TPCI200_ERR_INT_EN 0x0008 +#define TPCI200_TIME_INT_EN 0x0004 +#define TPCI200_RECOVER_EN 0x0002 +#define TPCI200_CLK32 0x0001 + +/* reset field in tpci200_regs */ +#define TPCI200_A_RESET 0x0001 +#define TPCI200_B_RESET 0x0002 +#define TPCI200_C_RESET 0x0004 +#define TPCI200_D_RESET 0x0008 + +/* status field in tpci200_regs */ +#define TPCI200_A_TIMEOUT 0x1000 +#define TPCI200_B_TIMEOUT 0x2000 +#define TPCI200_C_TIMEOUT 0x4000 +#define TPCI200_D_TIMEOUT 0x8000 + +#define TPCI200_A_ERROR 0x0100 +#define TPCI200_B_ERROR 0x0200 +#define TPCI200_C_ERROR 0x0400 +#define TPCI200_D_ERROR 0x0800 + +#define TPCI200_A_INT0 0x0001 +#define TPCI200_A_INT1 0x0002 +#define TPCI200_B_INT0 0x0004 +#define TPCI200_B_INT1 0x0008 +#define TPCI200_C_INT0 0x0010 +#define TPCI200_C_INT1 0x0020 +#define TPCI200_D_INT0 0x0040 +#define TPCI200_D_INT1 0x0080 + +#define TPCI200_SLOT_INT_MASK 0x00FF + +/* PCI Configuration registers. The PCI bridge is a PLX Technology PCI9030. */ +#define LAS1_DESC 0x2C +#define LAS2_DESC 0x30 + +/* Bits in the LAS?_DESC registers */ +#define LAS_BIT_BIGENDIAN 24 + +#define VME_IOID_SPACE "IOID" +#define VME_MEM_SPACE "MEM" + +/** + * struct slot_irq - slot IRQ definition. + * @vector Vector number + * @handler Handler called when IRQ arrives + * @arg Handler argument + * + */ +struct slot_irq { + struct ipack_device *holder; + int vector; + irqreturn_t (*handler)(void *); + void *arg; +}; + +/** + * struct tpci200_slot - data specific to the tpci200 slot. + * @slot_id Slot identification gived to external interface + * @irq Slot IRQ infos + * @io_phys IO physical base address register of the slot + * @id_phys ID physical base address register of the slot + * @int_phys INT physical base address register of the slot + * @mem_phys MEM physical base address register of the slot + * + */ +struct tpci200_slot { + struct slot_irq *irq; +}; + +/** + * struct tpci200_infos - informations specific of the TPCI200 tpci200. + * @pci_dev PCI device + * @interface_regs Pointer to IP interface space (Bar 2) + * @ioidint_space Pointer to IP ID, IO and INT space (Bar 3) + * @mem8_space Pointer to MEM space (Bar 4) + * + */ +struct tpci200_infos { + struct pci_dev *pdev; + struct pci_device_id *id_table; + struct tpci200_regs __iomem *interface_regs; + void __iomem *cfg_regs; + struct ipack_bus_device *ipack_bus; +}; +struct tpci200_board { + unsigned int number; + struct mutex mutex; + spinlock_t regs_lock; + struct tpci200_slot *slots; + struct tpci200_infos *info; + phys_addr_t mod_mem[IPACK_SPACE_COUNT]; +}; + +#endif /* _TPCI200_H_ */ |