[mirror_ubuntu-eoan-kernel.git] / drivers / ipack / carriers / tpci200.c

// SPDX-License-Identifier: GPL-2.0-only
/**
 * 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>
 */

#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);
	if (!tpci200->info->interface_regs) {
		dev_err(&tpci200->info->pdev->dev,
			"(bn 0x%X, sn 0x%X) failed to map driver user space!",
			tpci200->info->pdev->bus->number,
			tpci200->info->pdev->devfn);
		goto out_release_mem8_space;
	}

	/* 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 = kcalloc(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");
Commit	Line	Data
b886d83c	1	// SPDX-License-Identifier: GPL-2.0-only
0eeca14f SIG	2	/**
	3	* tpci200.c
	4	*
	5	* driver for the TEWS TPCI-200 device
76859725 SIG	6	*
	7	* Copyright (C) 2009-2012 CERN (www.cern.ch)
	8	* Author: Nicolas Serafini, EIC2 SA
	9	* Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
0eeca14f SIG	10	*/
0eeca14f SIG	11
0eeca14f	12	#include <linux/module.h>
9f3059c9	13	#include <linux/slab.h>
0eeca14f SIG	14	#include "tpci200.h"
0eeca14f SIG	15
6114aeaa	16	static const u16 tpci200_status_timeout[] = {
eb12d88b JT	17	TPCI200_A_TIMEOUT,
	18	TPCI200_B_TIMEOUT,
	19	TPCI200_C_TIMEOUT,
	20	TPCI200_D_TIMEOUT,
	21	};
	22
6114aeaa	23	static const u16 tpci200_status_error[] = {
eb12d88b JT	24	TPCI200_A_ERROR,
	25	TPCI200_B_ERROR,
	26	TPCI200_C_ERROR,
	27	TPCI200_D_ERROR,
	28	};
	29
a19ad7d0	30	static const size_t tpci200_space_size[IPACK_SPACE_COUNT] = {
fe4a3ed0 JT	31	[IPACK_IO_SPACE] = TPCI200_IO_SPACE_SIZE,
	32	[IPACK_ID_SPACE] = TPCI200_ID_SPACE_SIZE,
	33	[IPACK_INT_SPACE] = TPCI200_INT_SPACE_SIZE,
	34	[IPACK_MEM8_SPACE] = TPCI200_MEM8_SPACE_SIZE,
48a97352	35	[IPACK_MEM16_SPACE] = TPCI200_MEM16_SPACE_SIZE,
a19ad7d0 JT	36	};
	37
	38	static const size_t tpci200_space_interval[IPACK_SPACE_COUNT] = {
fe4a3ed0 JT	39	[IPACK_IO_SPACE] = TPCI200_IO_SPACE_INTERVAL,
	40	[IPACK_ID_SPACE] = TPCI200_ID_SPACE_INTERVAL,
	41	[IPACK_INT_SPACE] = TPCI200_INT_SPACE_INTERVAL,
	42	[IPACK_MEM8_SPACE] = TPCI200_MEM8_SPACE_INTERVAL,
48a97352	43	[IPACK_MEM16_SPACE] = TPCI200_MEM16_SPACE_INTERVAL,
a19ad7d0 JT	44	};
a19ad7d0 JT	45
0eeca14f SIG	46	static struct tpci200_board check_slot(struct ipack_device dev)
	47	{
	48	struct tpci200_board *tpci200;
0eeca14f	49
a23d3203	50	if (dev == NULL)
0eeca14f	51	return NULL;
0eeca14f	52
0eeca14f	53
f45651f9 SIG	54	tpci200 = dev_get_drvdata(dev->bus->parent);
	55
	56	if (tpci200 == NULL) {
	57	dev_info(&dev->dev, "carrier board not found\n");
0eeca14f SIG	58	return NULL;
	59	}
	60
	61	if (dev->slot >= TPCI200_NB_SLOT) {
a23d3203 SIG	62	dev_info(&dev->dev,
a23d3203 SIG	63	"Slot [%d:%d] doesn't exist! Last tpci200 slot is %d.\n",
f9e314d2	64	dev->bus->bus_nr, dev->slot, TPCI200_NB_SLOT-1);
0eeca14f SIG	65	return NULL;
	66	}
	67
0eeca14f SIG	68	return tpci200;
	69	}
	70
0118681b JT	71	static void tpci200_clear_mask(struct tpci200_board *tpci200,
	72	__le16 __iomem *addr, u16 mask)
	73	{
487e0a60 JT	74	unsigned long flags;
	75	spin_lock_irqsave(&tpci200->regs_lock, flags);
	76	iowrite16(ioread16(addr) & (~mask), addr);
	77	spin_unlock_irqrestore(&tpci200->regs_lock, flags);
0118681b JT	78	}
	79
	80	static void tpci200_set_mask(struct tpci200_board *tpci200,
	81	__le16 __iomem *addr, u16 mask)
	82	{
487e0a60 JT	83	unsigned long flags;
	84	spin_lock_irqsave(&tpci200->regs_lock, flags);
	85	iowrite16(ioread16(addr) \| mask, addr);
	86	spin_unlock_irqrestore(&tpci200->regs_lock, flags);
0118681b JT	87	}
0118681b JT	88
0eeca14f SIG	89	static void tpci200_unregister(struct tpci200_board *tpci200)
0eeca14f SIG	90	{
0eeca14f SIG	91	free_irq(tpci200->info->pdev->irq, (void *) tpci200);
	92
	93	pci_iounmap(tpci200->info->pdev, tpci200->info->interface_regs);
79878122	94	pci_iounmap(tpci200->info->pdev, tpci200->info->cfg_regs);
0eeca14f SIG	95
	96	pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR);
	97	pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR);
48a97352	98	pci_release_region(tpci200->info->pdev, TPCI200_MEM16_SPACE_BAR);
0eeca14f	99	pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR);
79878122	100	pci_release_region(tpci200->info->pdev, TPCI200_CFG_MEM_BAR);
0eeca14f SIG	101
	102	pci_disable_device(tpci200->info->pdev);
	103	pci_dev_put(tpci200->info->pdev);
0eeca14f SIG	104	}
0eeca14f SIG	105
877adc40 JT	106	static void tpci200_enable_irq(struct tpci200_board *tpci200,
	107	int islot)
	108	{
	109	tpci200_set_mask(tpci200,
	110	&tpci200->info->interface_regs->control[islot],
	111	TPCI200_INT0_EN \| TPCI200_INT1_EN);
	112	}
	113
	114	static void tpci200_disable_irq(struct tpci200_board *tpci200,
	115	int islot)
	116	{
	117	tpci200_clear_mask(tpci200,
	118	&tpci200->info->interface_regs->control[islot],
	119	TPCI200_INT0_EN \| TPCI200_INT1_EN);
	120	}
	121
af2140ce JT	122	static irqreturn_t tpci200_slot_irq(struct slot_irq *slot_irq)
af2140ce JT	123	{
ab0deffc	124	irqreturn_t ret;
af2140ce	125
ab0deffc JT	126	if (!slot_irq)
	127	return -ENODEV;
	128	ret = slot_irq->handler(slot_irq->arg);
	129
af2140ce JT	130	return ret;
	131	}
	132
0eeca14f SIG	133	static irqreturn_t tpci200_interrupt(int irq, void *dev_id)
	134	{
	135	struct tpci200_board tpci200 = (struct tpci200_board ) dev_id;
6f2c12ae	136	struct slot_irq *slot_irq;
ab0deffc JT	137	irqreturn_t ret;
	138	u16 status_reg;
	139	int i;
0eeca14f	140
0eeca14f	141	/* Read status register */
ab0deffc	142	status_reg = ioread16(&tpci200->info->interface_regs->status);
0eeca14f	143
ab0deffc JT	144	/* Did we cause the interrupt? */
ab0deffc JT	145	if (!(status_reg & TPCI200_SLOT_INT_MASK))
88ff8480	146	return IRQ_NONE;
ab0deffc JT	147
	148	/* callback to the IRQ handler for the corresponding slot */
	149	rcu_read_lock();
	150	for (i = 0; i < TPCI200_NB_SLOT; i++) {
	151	if (!(status_reg & ((TPCI200_A_INT0 \| TPCI200_A_INT1) << (2 * i))))
	152	continue;
	153	slot_irq = rcu_dereference(tpci200->slots[i].irq);
	154	ret = tpci200_slot_irq(slot_irq);
	155	if (ret == -ENODEV) {
	156	dev_info(&tpci200->info->pdev->dev,
	157	"No registered ISR for slot [%d:%d]!. IRQ will be disabled.\n",
	158	tpci200->number, i);
877adc40	159	tpci200_disable_irq(tpci200, i);
ab0deffc	160	}
88ff8480	161	}
ab0deffc JT	162	rcu_read_unlock();
	163
	164	return IRQ_HANDLED;
0eeca14f SIG	165	}
0eeca14f SIG	166
40733ed7 JT	167	static int tpci200_free_irq(struct ipack_device *dev)
	168	{
	169	struct slot_irq *slot_irq;
	170	struct tpci200_board *tpci200;
	171
	172	tpci200 = check_slot(dev);
	173	if (tpci200 == NULL)
	174	return -EINVAL;
	175
	176	if (mutex_lock_interruptible(&tpci200->mutex))
	177	return -ERESTARTSYS;
	178
	179	if (tpci200->slots[dev->slot].irq == NULL) {
	180	mutex_unlock(&tpci200->mutex);
	181	return -EINVAL;
	182	}
	183
	184	tpci200_disable_irq(tpci200, dev->slot);
	185	slot_irq = tpci200->slots[dev->slot].irq;
	186	/* uninstall handler */
	187	RCU_INIT_POINTER(tpci200->slots[dev->slot].irq, NULL);
	188	synchronize_rcu();
	189	kfree(slot_irq);
	190	mutex_unlock(&tpci200->mutex);
	191	return 0;
	192	}
	193
c6e2dfaa	194	static int tpci200_request_irq(struct ipack_device *dev,
faa75c40	195	irqreturn_t (handler)(void ), void *arg)
40733ed7 JT	196	{
	197	int res = 0;
	198	struct slot_irq *slot_irq;
	199	struct tpci200_board *tpci200;
	200
	201	tpci200 = check_slot(dev);
	202	if (tpci200 == NULL)
	203	return -EINVAL;
	204
	205	if (mutex_lock_interruptible(&tpci200->mutex))
	206	return -ERESTARTSYS;
	207
	208	if (tpci200->slots[dev->slot].irq != NULL) {
	209	dev_err(&dev->dev,
9d10b221 JM	210	"Slot [%d:%d] IRQ already registered !\n",
9d10b221 JM	211	dev->bus->bus_nr,
40733ed7 JT	212	dev->slot);
	213	res = -EINVAL;
	214	goto out_unlock;
	215	}
	216
	217	slot_irq = kzalloc(sizeof(struct slot_irq), GFP_KERNEL);
	218	if (slot_irq == NULL) {
	219	dev_err(&dev->dev,
	220	"Slot [%d:%d] unable to allocate memory for IRQ !\n",
f9e314d2	221	dev->bus->bus_nr, dev->slot);
40733ed7 JT	222	res = -ENOMEM;
	223	goto out_unlock;
	224	}
	225
	226	/*
	227	* WARNING: Setup Interrupt Vector in the IndustryPack device
	228	* before an IRQ request.
	229	* Read the User Manual of your IndustryPack device to know
	230	* where to write the vector in memory.
	231	*/
40733ed7 JT	232	slot_irq->handler = handler;
	233	slot_irq->arg = arg;
	234	slot_irq->holder = dev;
	235
	236	rcu_assign_pointer(tpci200->slots[dev->slot].irq, slot_irq);
	237	tpci200_enable_irq(tpci200, dev->slot);
	238
	239	out_unlock:
	240	mutex_unlock(&tpci200->mutex);
	241	return res;
	242	}
	243
0eeca14f SIG	244	static int tpci200_register(struct tpci200_board *tpci200)
0eeca14f SIG	245	{
862fe87a	246	int i;
0eeca14f	247	int res;
bb29ab86	248	phys_addr_t ioidint_base;
0eeca14f SIG	249	unsigned short slot_ctrl;
	250
	251	if (pci_enable_device(tpci200->info->pdev) < 0)
	252	return -ENODEV;
	253
0eeca14f SIG	254	/* Request IP interface register (Bar 2) */
	255	res = pci_request_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR,
	256	"Carrier IP interface registers");
	257	if (res) {
a23d3203 SIG	258	dev_err(&tpci200->info->pdev->dev,
	259	"(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 2 !",
	260	tpci200->info->pdev->bus->number,
	261	tpci200->info->pdev->devfn);
862fe87a	262	goto out_disable_pci;
0eeca14f SIG	263	}
	264
	265	/* Request IO ID INT space (Bar 3) */
	266	res = pci_request_region(tpci200->info->pdev,
	267	TPCI200_IO_ID_INT_SPACES_BAR,
	268	"Carrier IO ID INT space");
	269	if (res) {
a23d3203 SIG	270	dev_err(&tpci200->info->pdev->dev,
	271	"(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 3 !",
	272	tpci200->info->pdev->bus->number,
	273	tpci200->info->pdev->devfn);
0eeca14f SIG	274	goto out_release_ip_space;
	275	}
	276
fe4a3ed0	277	/* Request MEM8 space (Bar 5) */
0eeca14f	278	res = pci_request_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR,
fe4a3ed0	279	"Carrier MEM8 space");
0eeca14f	280	if (res) {
a23d3203	281	dev_err(&tpci200->info->pdev->dev,
fe4a3ed0	282	"(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 5!",
a23d3203 SIG	283	tpci200->info->pdev->bus->number,
a23d3203 SIG	284	tpci200->info->pdev->devfn);
0eeca14f SIG	285	goto out_release_ioid_int_space;
	286	}
	287
48a97352 JT	288	/* Request MEM16 space (Bar 4) */
	289	res = pci_request_region(tpci200->info->pdev, TPCI200_MEM16_SPACE_BAR,
	290	"Carrier MEM16 space");
	291	if (res) {
	292	dev_err(&tpci200->info->pdev->dev,
	293	"(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 4!",
	294	tpci200->info->pdev->bus->number,
	295	tpci200->info->pdev->devfn);
	296	goto out_release_mem8_space;
	297	}
	298
0eeca14f SIG	299	/* Map internal tpci200 driver user space */
0eeca14f SIG	300	tpci200->info->interface_regs =
5b47f3cb	301	ioremap_nocache(pci_resource_start(tpci200->info->pdev,
0eeca14f SIG	302	TPCI200_IP_INTERFACE_BAR),
0eeca14f SIG	303	TPCI200_IFACE_SIZE);
43986798 ZJ	304	if (!tpci200->info->interface_regs) {
	305	dev_err(&tpci200->info->pdev->dev,
	306	"(bn 0x%X, sn 0x%X) failed to map driver user space!",
	307	tpci200->info->pdev->bus->number,
	308	tpci200->info->pdev->devfn);
	309	goto out_release_mem8_space;
	310	}
0eeca14f	311
487e0a60 JT	312	/* Initialize lock that protects interface_regs */
	313	spin_lock_init(&tpci200->regs_lock);
	314
0eeca14f SIG	315	ioidint_base = pci_resource_start(tpci200->info->pdev,
0eeca14f SIG	316	TPCI200_IO_ID_INT_SPACES_BAR);
84a08fa9 JT	317	tpci200->mod_mem[IPACK_IO_SPACE] = ioidint_base + TPCI200_IO_SPACE_OFF;
	318	tpci200->mod_mem[IPACK_ID_SPACE] = ioidint_base + TPCI200_ID_SPACE_OFF;
	319	tpci200->mod_mem[IPACK_INT_SPACE] =
	320	ioidint_base + TPCI200_INT_SPACE_OFF;
fe4a3ed0	321	tpci200->mod_mem[IPACK_MEM8_SPACE] =
84a08fa9	322	pci_resource_start(tpci200->info->pdev,
6114aeaa	323	TPCI200_MEM8_SPACE_BAR);
48a97352 JT	324	tpci200->mod_mem[IPACK_MEM16_SPACE] =
	325	pci_resource_start(tpci200->info->pdev,
	326	TPCI200_MEM16_SPACE_BAR);
0eeca14f SIG	327
	328	/* Set the default parameters of the slot
	329	* INT0 disabled, level sensitive
	330	* INT1 disabled, level sensitive
	331	* error interrupt disabled
	332	* timeout interrupt disabled
	333	* recover time disabled
	334	* clock rate 8 MHz
	335	*/
	336	slot_ctrl = 0;
a93963ab	337	for (i = 0; i < TPCI200_NB_SLOT; i++)
28086cbd	338	writew(slot_ctrl, &tpci200->info->interface_regs->control[i]);
0eeca14f SIG	339
	340	res = request_irq(tpci200->info->pdev->irq,
	341	tpci200_interrupt, IRQF_SHARED,
c63a7dd0	342	KBUILD_MODNAME, (void *) tpci200);
0eeca14f	343	if (res) {
a23d3203 SIG	344	dev_err(&tpci200->info->pdev->dev,
	345	"(bn 0x%X, sn 0x%X) unable to register IRQ !",
	346	tpci200->info->pdev->bus->number,
	347	tpci200->info->pdev->devfn);
862fe87a	348	goto out_release_ioid_int_space;
0eeca14f SIG	349	}
	350
	351	return 0;
	352
48a97352 JT	353	out_release_mem8_space:
48a97352 JT	354	pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR);
0eeca14f SIG	355	out_release_ioid_int_space:
	356	pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR);
	357	out_release_ip_space:
	358	pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR);
0eeca14f SIG	359	out_disable_pci:
0eeca14f SIG	360	pci_disable_device(tpci200->info->pdev);
0eeca14f SIG	361	return res;
	362	}
	363
eb12d88b JT	364	static int tpci200_get_clockrate(struct ipack_device *dev)
	365	{
	366	struct tpci200_board *tpci200 = check_slot(dev);
7dd73b86	367	__le16 __iomem *addr;
eb12d88b JT	368
	369	if (!tpci200)
	370	return -ENODEV;
	371
	372	addr = &tpci200->info->interface_regs->control[dev->slot];
	373	return (ioread16(addr) & TPCI200_CLK32) ? 32 : 8;
	374	}
	375
	376	static int tpci200_set_clockrate(struct ipack_device *dev, int mherz)
	377	{
	378	struct tpci200_board *tpci200 = check_slot(dev);
7dd73b86	379	__le16 __iomem *addr;
eb12d88b JT	380
	381	if (!tpci200)
	382	return -ENODEV;
	383
	384	addr = &tpci200->info->interface_regs->control[dev->slot];
	385
eb12d88b JT	386	switch (mherz) {
eb12d88b JT	387	case 8:
0118681b	388	tpci200_clear_mask(tpci200, addr, TPCI200_CLK32);
eb12d88b JT	389	break;
eb12d88b JT	390	case 32:
0118681b	391	tpci200_set_mask(tpci200, addr, TPCI200_CLK32);
eb12d88b JT	392	break;
eb12d88b JT	393	default:
eb12d88b JT	394	return -EINVAL;
eb12d88b JT	395	}
eb12d88b JT	396	return 0;
	397	}
	398
	399	static int tpci200_get_error(struct ipack_device *dev)
	400	{
	401	struct tpci200_board *tpci200 = check_slot(dev);
7dd73b86	402	__le16 __iomem *addr;
eb12d88b JT	403	u16 mask;
	404
	405	if (!tpci200)
	406	return -ENODEV;
	407
	408	addr = &tpci200->info->interface_regs->status;
	409	mask = tpci200_status_error[dev->slot];
	410	return (ioread16(addr) & mask) ? 1 : 0;
	411	}
	412
	413	static int tpci200_get_timeout(struct ipack_device *dev)
	414	{
	415	struct tpci200_board *tpci200 = check_slot(dev);
7dd73b86	416	__le16 __iomem *addr;
eb12d88b JT	417	u16 mask;
	418
	419	if (!tpci200)
	420	return -ENODEV;
	421
	422	addr = &tpci200->info->interface_regs->status;
	423	mask = tpci200_status_timeout[dev->slot];
	424
	425	return (ioread16(addr) & mask) ? 1 : 0;
	426	}
	427
	428	static int tpci200_reset_timeout(struct ipack_device *dev)
	429	{
	430	struct tpci200_board *tpci200 = check_slot(dev);
7dd73b86	431	__le16 __iomem *addr;
eb12d88b JT	432	u16 mask;
	433
	434	if (!tpci200)
	435	return -ENODEV;
	436
	437	addr = &tpci200->info->interface_regs->status;
	438	mask = tpci200_status_timeout[dev->slot];
	439
	440	iowrite16(mask, addr);
	441	return 0;
	442	}
	443
0eeca14f SIG	444	static void tpci200_uninstall(struct tpci200_board *tpci200)
0eeca14f SIG	445	{
0eeca14f SIG	446	tpci200_unregister(tpci200);
	447	kfree(tpci200->slots);
	448	}
	449
9869a937	450	static const struct ipack_bus_ops tpci200_bus_ops = {
0eeca14f SIG	451	.request_irq = tpci200_request_irq,
0eeca14f SIG	452	.free_irq = tpci200_free_irq,
eb12d88b JT	453	.get_clockrate = tpci200_get_clockrate,
	454	.set_clockrate = tpci200_set_clockrate,
	455	.get_error = tpci200_get_error,
	456	.get_timeout = tpci200_get_timeout,
	457	.reset_timeout = tpci200_reset_timeout,
0eeca14f SIG	458	};
	459
	460	static int tpci200_install(struct tpci200_board *tpci200)
	461	{
	462	int res;
	463
6396bb22 KC	464	tpci200->slots = kcalloc(TPCI200_NB_SLOT, sizeof(struct tpci200_slot),
6396bb22 KC	465	GFP_KERNEL);
ec0ceb9e MG	466	if (tpci200->slots == NULL)
ec0ceb9e MG	467	return -ENOMEM;
0eeca14f SIG	468
0eeca14f SIG	469	res = tpci200_register(tpci200);
ec0ceb9e MG	470	if (res) {
	471	kfree(tpci200->slots);
	472	tpci200->slots = NULL;
	473	return res;
	474	}
0eeca14f SIG	475
	476	mutex_init(&tpci200->mutex);
	477	return 0;
0eeca14f SIG	478	}
0eeca14f SIG	479
1e91795c JT	480	static void tpci200_release_device(struct ipack_device *dev)
	481	{
	482	kfree(dev);
	483	}
	484
	485	static int tpci200_create_device(struct tpci200_board *tpci200, int i)
	486	{
e926301b	487	int ret;
a19ad7d0	488	enum ipack_space space;
1e91795c JT	489	struct ipack_device *dev =
	490	kzalloc(sizeof(struct ipack_device), GFP_KERNEL);
	491	if (!dev)
	492	return -ENOMEM;
	493	dev->slot = i;
	494	dev->bus = tpci200->info->ipack_bus;
	495	dev->release = tpci200_release_device;
a19ad7d0 JT	496
	497	for (space = 0; space < IPACK_SPACE_COUNT; space++) {
	498	dev->region[space].start =
	499	tpci200->mod_mem[space]
	500	+ tpci200_space_interval[space] * i;
	501	dev->region[space].size = tpci200_space_size[space];
	502	}
e926301b SIG	503
	504	ret = ipack_device_init(dev);
	505	if (ret < 0) {
	506	ipack_put_device(dev);
	507	return ret;
	508	}
	509
	510	ret = ipack_device_add(dev);
	511	if (ret < 0)
	512	ipack_put_device(dev);
	513
	514	return ret;
1e91795c JT	515	}
1e91795c JT	516
20659455 SH	517	static int tpci200_pci_probe(struct pci_dev *pdev,
20659455 SH	518	const struct pci_device_id *id)
0eeca14f	519	{
862fe87a	520	int ret, i;
0eeca14f	521	struct tpci200_board *tpci200;
eb12d88b	522	u32 reg32;
0eeca14f SIG	523
	524	tpci200 = kzalloc(sizeof(struct tpci200_board), GFP_KERNEL);
	525	if (!tpci200)
	526	return -ENOMEM;
	527
	528	tpci200->info = kzalloc(sizeof(struct tpci200_infos), GFP_KERNEL);
	529	if (!tpci200->info) {
5e15a753 JT	530	ret = -ENOMEM;
5e15a753 JT	531	goto out_err_info;
0eeca14f SIG	532	}
0eeca14f SIG	533
b442bf73 SIG	534	pci_dev_get(pdev);
b442bf73 SIG	535
cea2f7cd JT	536	/* Obtain a mapping of the carrier's PCI configuration registers */
	537	ret = pci_request_region(pdev, TPCI200_CFG_MEM_BAR,
	538	KBUILD_MODNAME " Configuration Memory");
	539	if (ret) {
	540	dev_err(&pdev->dev, "Failed to allocate PCI Configuration Memory");
	541	ret = -EBUSY;
	542	goto out_err_pci_request;
	543	}
	544	tpci200->info->cfg_regs = ioremap_nocache(
	545	pci_resource_start(pdev, TPCI200_CFG_MEM_BAR),
	546	pci_resource_len(pdev, TPCI200_CFG_MEM_BAR));
	547	if (!tpci200->info->cfg_regs) {
	548	dev_err(&pdev->dev, "Failed to map PCI Configuration Memory");
	549	ret = -EFAULT;
	550	goto out_err_ioremap;
	551	}
	552
	553	/* Disable byte swapping for 16 bit IP module access. This will ensure
	554	* that the Industrypack big endian byte order is preserved by the
	555	* carrier. */
	556	reg32 = ioread32(tpci200->info->cfg_regs + LAS1_DESC);
	557	reg32 \|= 1 << LAS_BIT_BIGENDIAN;
	558	iowrite32(reg32, tpci200->info->cfg_regs + LAS1_DESC);
	559
	560	reg32 = ioread32(tpci200->info->cfg_regs + LAS2_DESC);
	561	reg32 \|= 1 << LAS_BIT_BIGENDIAN;
	562	iowrite32(reg32, tpci200->info->cfg_regs + LAS2_DESC);
	563
0eeca14f SIG	564	/* Save struct pci_dev pointer */
	565	tpci200->info->pdev = pdev;
	566	tpci200->info->id_table = (struct pci_device_id *)id;
	567
	568	/* register the device and initialize it */
	569	ret = tpci200_install(tpci200);
	570	if (ret) {
5e15a753 JT	571	dev_err(&pdev->dev, "error during tpci200 install\n");
	572	ret = -ENODEV;
	573	goto out_err_install;
0eeca14f SIG	574	}
0eeca14f SIG	575
ec440335 SIG	576	/* Register the carrier in the industry pack bus driver */
	577	tpci200->info->ipack_bus = ipack_bus_register(&pdev->dev,
	578	TPCI200_NB_SLOT,
36c53b3c FV	579	&tpci200_bus_ops,
36c53b3c FV	580	THIS_MODULE);
ec440335	581	if (!tpci200->info->ipack_bus) {
a23d3203 SIG	582	dev_err(&pdev->dev,
a23d3203 SIG	583	"error registering the carrier on ipack driver\n");
5e15a753 JT	584	ret = -EFAULT;
5e15a753 JT	585	goto out_err_bus_register;
0eeca14f	586	}
ec440335	587
0eeca14f	588	/* save the bus number given by ipack to logging purpose */
ec440335	589	tpci200->number = tpci200->info->ipack_bus->bus_nr;
0eeca14f	590	dev_set_drvdata(&pdev->dev, tpci200);
862fe87a	591
862fe87a	592	for (i = 0; i < TPCI200_NB_SLOT; i++)
1e91795c	593	tpci200_create_device(tpci200, i);
5e15a753 JT	594	return 0;
	595
	596	out_err_bus_register:
	597	tpci200_uninstall(tpci200);
	598	out_err_install:
cea2f7cd JT	599	iounmap(tpci200->info->cfg_regs);
	600	out_err_ioremap:
	601	pci_release_region(pdev, TPCI200_CFG_MEM_BAR);
	602	out_err_pci_request:
b442bf73	603	pci_dev_put(pdev);
5e15a753 JT	604	kfree(tpci200->info);
	605	out_err_info:
	606	kfree(tpci200);
0eeca14f SIG	607	return ret;
	608	}
	609
	610	static void __tpci200_pci_remove(struct tpci200_board *tpci200)
	611	{
ec440335	612	ipack_bus_unregister(tpci200->info->ipack_bus);
9c0d169e	613	tpci200_uninstall(tpci200);
cea2f7cd	614
ec440335	615	kfree(tpci200->info);
0eeca14f SIG	616	kfree(tpci200);
	617	}
	618
29c35442	619	static void tpci200_pci_remove(struct pci_dev *dev)
0eeca14f	620	{
f45651f9	621	struct tpci200_board *tpci200 = pci_get_drvdata(dev);
0eeca14f	622
f45651f9	623	__tpci200_pci_remove(tpci200);
0eeca14f SIG	624	}
0eeca14f SIG	625
7426d29e	626	static const struct pci_device_id tpci200_idtable[] = {
0eeca14f SIG	627	{ TPCI200_VENDOR_ID, TPCI200_DEVICE_ID, TPCI200_SUBVENDOR_ID,
	628	TPCI200_SUBDEVICE_ID },
	629	{ 0, },
	630	};
	631
39535037 MG	632	MODULE_DEVICE_TABLE(pci, tpci200_idtable);
39535037 MG	633
0eeca14f SIG	634	static struct pci_driver tpci200_pci_drv = {
	635	.name = "tpci200",
	636	.id_table = tpci200_idtable,
20659455	637	.probe = tpci200_pci_probe,
c5dee46c	638	.remove = tpci200_pci_remove,
0eeca14f SIG	639	};
0eeca14f SIG	640
1bc7c1c7	641	module_pci_driver(tpci200_pci_drv);
0eeca14f SIG	642
	643	MODULE_DESCRIPTION("TEWS TPCI-200 device driver");
	644	MODULE_LICENSE("GPL");