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kernel-ark/drivers/macintosh/macio_asic.c
Benjamin Herrenschmidt 6e99e45828 [PATCH] powerpc: fix trigger handling in the new irq code 
This patch slightly reworks the new irq code to fix a small design error.  I
removed the passing of the trigger to the map() calls entirely, it was not a
good idea to have one call do two different things.  It also fixes a couple of
corner cases.

Mapping a linux virtual irq to a physical irq now does only that.  Setting the
trigger is a different action which has a different call.

The main changes are:

- I no longer call host->ops->map() for an already mapped irq, I just return
  the virtual number that was already mapped.  It was called before to give an
  opportunity to change the trigger, but that was causing issues as that could
  happen while the interrupt was in use by a device, and because of the
  trigger change, map would potentially muck around with things in a racy way.
   That was causing much burden on a given's controller implementation of
  map() to get it right.  This is much simpler now.  map() is only called on
  the initial mapping of an irq, meaning that you know that this irq is _not_
  being used.  You can initialize the hardware if you want (though you don't
  have to).

- Controllers that can handle different type of triggers (level/edge/etc...)
  now implement the standard irq_chip->set_type() call as defined by the
  generic code.  That means that you can use the standard set_irq_type() to
  configure an irq line manually if you wish or (though I don't like that
  interface), pass explicit trigger flags to request_irq() as defined by the
  generic kernel interfaces.  Also, using those interfaces guarantees that
  your controller set_type callback is called with the descriptor lock held,
  thus providing locking against activity on the same interrupt (including
  mask/unmask/etc...) automatically.  A result is that, for example, MPIC's
  own map() implementation calls irq_set_type(NONE) to configure the hardware
  to the default triggers.

- To allow the above, the irq_map array entry for the new mapped interrupt
  is now set before map() callback is called for the controller.

- The irq_create_of_mapping() (also used by irq_of_parse_and_map()) function
  for mapping interrupts from the device-tree now also call the separate
  set_irq_type(), and only does so if there is a change in the trigger type.

- While I was at it, I changed pci_read_irq_line() (which is the helper I
  would expect most archs to use in their pcibios_fixup() to get the PCI
  interrupt routing from the device tree) to also handle a fallback when the
  DT mapping fails consisting of reading the PCI_INTERRUPT_PIN to know wether
  the device has an interrupt at all, and the the PCI_INTERRUPT_LINE to get an
  interrupt number from the device.  That number is then mapped using the
  default controller, and the trigger is set to level low.  That default
  behaviour works for several platforms that don't have a proper interrupt
  tree like Pegasos.  If it doesn't work for your platform, then either
  provide a proper interrupt tree from the firmware so that fallback isn't
  needed, or don't call pci_read_irq_line()

- Add back a bit that got dropped by my main rework patch for properly
  clearing pending IPIs on pSeries when using a kexec

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-10 13:24:20 -07:00

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/*
* Bus & driver management routines for devices within
* a MacIO ASIC. Interface to new driver model mostly
* stolen from the PCI version.
*
* Copyright (C) 2005 Ben. Herrenschmidt (benh@kernel.crashing.org)
*
* 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.
*
* TODO:
*
* - Don't probe below media bay by default, but instead provide
* some hooks for media bay to dynamically add/remove it's own
* sub-devices.
*/
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/machdep.h>
#include <asm/macio.h>
#include <asm/pmac_feature.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#undef DEBUG
#define MAX_NODE_NAME_SIZE (BUS_ID_SIZE - 12)
static struct macio_chip *macio_on_hold;
static int macio_bus_match(struct device *dev, struct device_driver *drv)
{
struct macio_dev * macio_dev = to_macio_device(dev);
struct macio_driver * macio_drv = to_macio_driver(drv);
const struct of_device_id * matches = macio_drv->match_table;
if (!matches)
return 0;
return of_match_device(matches, &macio_dev->ofdev) != NULL;
}
struct macio_dev *macio_dev_get(struct macio_dev *dev)
{
struct device *tmp;
if (!dev)
return NULL;
tmp = get_device(&dev->ofdev.dev);
if (tmp)
return to_macio_device(tmp);
else
return NULL;
}
void macio_dev_put(struct macio_dev *dev)
{
if (dev)
put_device(&dev->ofdev.dev);
}
static int macio_device_probe(struct device *dev)
{
int error = -ENODEV;
struct macio_driver *drv;
struct macio_dev *macio_dev;
const struct of_device_id *match;
drv = to_macio_driver(dev->driver);
macio_dev = to_macio_device(dev);
if (!drv->probe)
return error;
macio_dev_get(macio_dev);
match = of_match_device(drv->match_table, &macio_dev->ofdev);
if (match)
error = drv->probe(macio_dev, match);
if (error)
macio_dev_put(macio_dev);
return error;
}
static int macio_device_remove(struct device *dev)
{
struct macio_dev * macio_dev = to_macio_device(dev);
struct macio_driver * drv = to_macio_driver(dev->driver);
if (dev->driver && drv->remove)
drv->remove(macio_dev);
macio_dev_put(macio_dev);
return 0;
}
static void macio_device_shutdown(struct device *dev)
{
struct macio_dev * macio_dev = to_macio_device(dev);
struct macio_driver * drv = to_macio_driver(dev->driver);
if (dev->driver && drv->shutdown)
drv->shutdown(macio_dev);
}
static int macio_device_suspend(struct device *dev, pm_message_t state)
{
struct macio_dev * macio_dev = to_macio_device(dev);
struct macio_driver * drv = to_macio_driver(dev->driver);
if (dev->driver && drv->suspend)
return drv->suspend(macio_dev, state);
return 0;
}
static int macio_device_resume(struct device * dev)
{
struct macio_dev * macio_dev = to_macio_device(dev);
struct macio_driver * drv = to_macio_driver(dev->driver);
if (dev->driver && drv->resume)
return drv->resume(macio_dev);
return 0;
}
static int macio_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
{
struct macio_dev * macio_dev;
struct of_device * of;
char *scratch, *compat, *compat2;
int i = 0;
int length, cplen, cplen2, seen = 0;
if (!dev)
return -ENODEV;
macio_dev = to_macio_device(dev);
if (!macio_dev)
return -ENODEV;
of = &macio_dev->ofdev;
/* stuff we want to pass to /sbin/hotplug */
envp[i++] = scratch = buffer;
length = scnprintf (scratch, buffer_size, "OF_NAME=%s", of->node->name);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size, "OF_TYPE=%s", of->node->type);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
/* Since the compatible field can contain pretty much anything
* it's not really legal to split it out with commas. We split it
* up using a number of environment variables instead. */
compat = (char *) get_property(of->node, "compatible", &cplen);
compat2 = compat;
cplen2= cplen;
while (compat && cplen > 0) {
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size,
"OF_COMPATIBLE_%d=%s", seen, compat);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
length = strlen (compat) + 1;
compat += length;
cplen -= length;
seen++;
}
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size, "OF_COMPATIBLE_N=%d", seen);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size, "MODALIAS=of:N%sT%s",
of->node->name, of->node->type);
/* overwrite '\0' */
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
if (!compat2) {
compat2 = "";
cplen2 = 1;
}
while (cplen2 > 0) {
length = snprintf (scratch, buffer_size, "C%s", compat2);
buffer_size -= length;
if (buffer_size <= 0)
return -ENOMEM;
scratch += length;
length = strlen (compat2) + 1;
compat2 += length;
cplen2 -= length;
}
envp[i] = NULL;
return 0;
}
extern struct device_attribute macio_dev_attrs[];
struct bus_type macio_bus_type = {
.name = "macio",
.match = macio_bus_match,
.uevent = macio_uevent,
.probe = macio_device_probe,
.remove = macio_device_remove,
.shutdown = macio_device_shutdown,
.suspend = macio_device_suspend,
.resume = macio_device_resume,
.dev_attrs = macio_dev_attrs,
};
static int __init macio_bus_driver_init(void)
{
return bus_register(&macio_bus_type);
}
postcore_initcall(macio_bus_driver_init);
/**
* macio_release_dev - free a macio device structure when all users of it are
* finished.
* @dev: device that's been disconnected
*
* Will be called only by the device core when all users of this macio device
* are done. This currently means never as we don't hot remove any macio
* device yet, though that will happen with mediabay based devices in a later
* implementation.
*/
static void macio_release_dev(struct device *dev)
{
struct macio_dev *mdev;
mdev = to_macio_device(dev);
kfree(mdev);
}
/**
* macio_resource_quirks - tweak or skip some resources for a device
* @np: pointer to the device node
* @res: resulting resource
* @index: index of resource in node
*
* If this routine returns non-null, then the resource is completely
* skipped.
*/
static int macio_resource_quirks(struct device_node *np, struct resource *res,
int index)
{
/* Only quirks for memory resources for now */
if ((res->flags & IORESOURCE_MEM) == 0)
return 0;
/* Grand Central has too large resource 0 on some machines */
if (index == 0 && !strcmp(np->name, "gc"))
res->end = res->start + 0x1ffff;
/* Airport has bogus resource 2 */
if (index >= 2 && !strcmp(np->name, "radio"))
return 1;
#ifndef CONFIG_PPC64
/* DBDMAs may have bogus sizes */
if ((res->start & 0x0001f000) == 0x00008000)
res->end = res->start + 0xff;
#endif /* CONFIG_PPC64 */
/* ESCC parent eats child resources. We could have added a
* level of hierarchy, but I don't really feel the need
* for it
*/
if (!strcmp(np->name, "escc"))
return 1;
/* ESCC has bogus resources >= 3 */
if (index >= 3 && !(strcmp(np->name, "ch-a") &&
strcmp(np->name, "ch-b")))
return 1;
/* Media bay has too many resources, keep only first one */
if (index > 0 && !strcmp(np->name, "media-bay"))
return 1;
/* Some older IDE resources have bogus sizes */
if (!(strcmp(np->name, "IDE") && strcmp(np->name, "ATA") &&
strcmp(np->type, "ide") && strcmp(np->type, "ata"))) {
if (index == 0 && (res->end - res->start) > 0xfff)
res->end = res->start + 0xfff;
if (index == 1 && (res->end - res->start) > 0xff)
res->end = res->start + 0xff;
}
return 0;
}
static void macio_create_fixup_irq(struct macio_dev *dev, int index,
unsigned int line)
{
unsigned int irq;
irq = irq_create_mapping(NULL, line);
if (irq != NO_IRQ) {
dev->interrupt[index].start = irq;
dev->interrupt[index].flags = IORESOURCE_IRQ;
dev->interrupt[index].name = dev->ofdev.dev.bus_id;
}
if (dev->n_interrupts <= index)
dev->n_interrupts = index + 1;
}
static void macio_add_missing_resources(struct macio_dev *dev)
{
struct device_node *np = dev->ofdev.node;
unsigned int irq_base;
/* Gatwick has some missing interrupts on child nodes */
if (dev->bus->chip->type != macio_gatwick)
return;
/* irq_base is always 64 on gatwick. I have no cleaner way to get
* that value from here at this point
*/
irq_base = 64;
/* Fix SCC */
if (strcmp(np->name, "ch-a") == 0) {
macio_create_fixup_irq(dev, 0, 15 + irq_base);
macio_create_fixup_irq(dev, 1, 4 + irq_base);
macio_create_fixup_irq(dev, 2, 5 + irq_base);
printk(KERN_INFO "macio: fixed SCC irqs on gatwick\n");
}
/* Fix media-bay */
if (strcmp(np->name, "media-bay") == 0) {
macio_create_fixup_irq(dev, 0, 29 + irq_base);
printk(KERN_INFO "macio: fixed media-bay irq on gatwick\n");
}
/* Fix left media bay childs */
if (dev->media_bay != NULL && strcmp(np->name, "floppy") == 0) {
macio_create_fixup_irq(dev, 0, 19 + irq_base);
macio_create_fixup_irq(dev, 1, 1 + irq_base);
printk(KERN_INFO "macio: fixed left floppy irqs\n");
}
if (dev->media_bay != NULL && strcasecmp(np->name, "ata4") == 0) {
macio_create_fixup_irq(dev, 0, 14 + irq_base);
macio_create_fixup_irq(dev, 0, 3 + irq_base);
printk(KERN_INFO "macio: fixed left ide irqs\n");
}
}
static void macio_setup_interrupts(struct macio_dev *dev)
{
struct device_node *np = dev->ofdev.node;
unsigned int irq;
int i = 0, j = 0;
for (;;) {
struct resource *res = &dev->interrupt[j];
if (j >= MACIO_DEV_COUNT_IRQS)
break;
irq = irq_of_parse_and_map(np, i++);
if (irq == NO_IRQ)
break;
res->start = irq;
res->flags = IORESOURCE_IRQ;
res->name = dev->ofdev.dev.bus_id;
if (macio_resource_quirks(np, res, i - 1)) {
memset(res, 0, sizeof(struct resource));
continue;
} else
j++;
}
dev->n_interrupts = j;
}
static void macio_setup_resources(struct macio_dev *dev,
struct resource *parent_res)
{
struct device_node *np = dev->ofdev.node;
struct resource r;
int index;
for (index = 0; of_address_to_resource(np, index, &r) == 0; index++) {
struct resource *res = &dev->resource[index];
if (index >= MACIO_DEV_COUNT_RESOURCES)
break;
*res = r;
res->name = dev->ofdev.dev.bus_id;
if (macio_resource_quirks(np, res, index)) {
memset(res, 0, sizeof(struct resource));
continue;
}
/* Currently, we consider failure as harmless, this may
* change in the future, once I've found all the device
* tree bugs in older machines & worked around them
*/
if (insert_resource(parent_res, res)) {
printk(KERN_WARNING "Can't request resource "
"%d for MacIO device %s\n",
index, dev->ofdev.dev.bus_id);
}
}
dev->n_resources = index;
}
/**
* macio_add_one_device - Add one device from OF node to the device tree
* @chip: pointer to the macio_chip holding the device
* @np: pointer to the device node in the OF tree
* @in_bay: set to 1 if device is part of a media-bay
*
* When media-bay is changed to hotswap drivers, this function will
* be exposed to the bay driver some way...
*/
static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
struct device *parent,
struct device_node *np,
struct macio_dev *in_bay,
struct resource *parent_res)
{
struct macio_dev *dev;
u32 *reg;
if (np == NULL)
return NULL;
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
memset(dev, 0, sizeof(*dev));
dev->bus = &chip->lbus;
dev->media_bay = in_bay;
dev->ofdev.node = np;
dev->ofdev.dma_mask = 0xffffffffUL;
dev->ofdev.dev.dma_mask = &dev->ofdev.dma_mask;
dev->ofdev.dev.parent = parent;
dev->ofdev.dev.bus = &macio_bus_type;
dev->ofdev.dev.release = macio_release_dev;
#ifdef DEBUG
printk("preparing mdev @%p, ofdev @%p, dev @%p, kobj @%p\n",
dev, &dev->ofdev, &dev->ofdev.dev, &dev->ofdev.dev.kobj);
#endif
/* MacIO itself has a different reg, we use it's PCI base */
if (np == chip->of_node) {
sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
chip->lbus.index,
#ifdef CONFIG_PCI
(unsigned int)pci_resource_start(chip->lbus.pdev, 0),
#else
0, /* NuBus may want to do something better here */
#endif
MAX_NODE_NAME_SIZE, np->name);
} else {
reg = (u32 *)get_property(np, "reg", NULL);
sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
chip->lbus.index,
reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
}
/* Setup interrupts & resources */
macio_setup_interrupts(dev);
macio_setup_resources(dev, parent_res);
macio_add_missing_resources(dev);
/* Register with core */
if (of_device_register(&dev->ofdev) != 0) {
printk(KERN_DEBUG"macio: device registration error for %s!\n",
dev->ofdev.dev.bus_id);
kfree(dev);
return NULL;
}
return dev;
}
static int macio_skip_device(struct device_node *np)
{
if (strncmp(np->name, "battery", 7) == 0)
return 1;
if (strncmp(np->name, "escc-legacy", 11) == 0)
return 1;
return 0;
}
/**
* macio_pci_add_devices - Adds sub-devices of mac-io to the device tree
* @chip: pointer to the macio_chip holding the devices
*
* This function will do the job of extracting devices from the
* Open Firmware device tree, build macio_dev structures and add
* them to the Linux device tree.
*
* For now, childs of media-bay are added now as well. This will
* change rsn though.
*/
static void macio_pci_add_devices(struct macio_chip *chip)
{
struct device_node *np, *pnode;
struct macio_dev *rdev, *mdev, *mbdev = NULL, *sdev = NULL;
struct device *parent = NULL;
struct resource *root_res = &iomem_resource;
/* Add a node for the macio bus itself */
#ifdef CONFIG_PCI
if (chip->lbus.pdev) {
parent = &chip->lbus.pdev->dev;
root_res = &chip->lbus.pdev->resource[0];
}
#endif
pnode = of_node_get(chip->of_node);
if (pnode == NULL)
return;
/* Add macio itself to hierarchy */
rdev = macio_add_one_device(chip, parent, pnode, NULL, root_res);
if (rdev == NULL)
return;
root_res = &rdev->resource[0];
/* First scan 1st level */
for (np = NULL; (np = of_get_next_child(pnode, np)) != NULL;) {
if (macio_skip_device(np))
continue;
of_node_get(np);
mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL,
root_res);
if (mdev == NULL)
of_node_put(np);
else if (strncmp(np->name, "media-bay", 9) == 0)
mbdev = mdev;
else if (strncmp(np->name, "escc", 4) == 0)
sdev = mdev;
}
/* Add media bay devices if any */
if (mbdev)
for (np = NULL; (np = of_get_next_child(mbdev->ofdev.node, np))
!= NULL;) {
if (macio_skip_device(np))
continue;
of_node_get(np);
if (macio_add_one_device(chip, &mbdev->ofdev.dev, np,
mbdev, root_res) == NULL)
of_node_put(np);
}
/* Add serial ports if any */
if (sdev) {
for (np = NULL; (np = of_get_next_child(sdev->ofdev.node, np))
!= NULL;) {
if (macio_skip_device(np))
continue;
of_node_get(np);
if (macio_add_one_device(chip, &sdev->ofdev.dev, np,
NULL, root_res) == NULL)
of_node_put(np);
}
}
}
/**
* macio_register_driver - Registers a new MacIO device driver
* @drv: pointer to the driver definition structure
*/
int macio_register_driver(struct macio_driver *drv)
{
/* initialize common driver fields */
drv->driver.name = drv->name;
drv->driver.bus = &macio_bus_type;
/* register with core */
return driver_register(&drv->driver);
}
/**
* macio_unregister_driver - Unregisters a new MacIO device driver
* @drv: pointer to the driver definition structure
*/
void macio_unregister_driver(struct macio_driver *drv)
{
driver_unregister(&drv->driver);
}
/**
* macio_request_resource - Request an MMIO resource
* @dev: pointer to the device holding the resource
* @resource_no: resource number to request
* @name: resource name
*
* Mark memory region number @resource_no associated with MacIO
* device @dev as being reserved by owner @name. Do not access
* any address inside the memory regions unless this call returns
* successfully.
*
* Returns 0 on success, or %EBUSY on error. A warning
* message is also printed on failure.
*/
int macio_request_resource(struct macio_dev *dev, int resource_no,
const char *name)
{
if (macio_resource_len(dev, resource_no) == 0)
return 0;
if (!request_mem_region(macio_resource_start(dev, resource_no),
macio_resource_len(dev, resource_no),
name))
goto err_out;
return 0;
err_out:
printk (KERN_WARNING "MacIO: Unable to reserve resource #%d:%lx@%lx"
" for device %s\n",
resource_no,
macio_resource_len(dev, resource_no),
macio_resource_start(dev, resource_no),
dev->ofdev.dev.bus_id);
return -EBUSY;
}
/**
* macio_release_resource - Release an MMIO resource
* @dev: pointer to the device holding the resource
* @resource_no: resource number to release
*/
void macio_release_resource(struct macio_dev *dev, int resource_no)
{
if (macio_resource_len(dev, resource_no) == 0)
return;
release_mem_region(macio_resource_start(dev, resource_no),
macio_resource_len(dev, resource_no));
}
/**
* macio_request_resources - Reserve all memory resources
* @dev: MacIO device whose resources are to be reserved
* @name: Name to be associated with resource.
*
* Mark all memory regions associated with MacIO device @dev as
* being reserved by owner @name. Do not access any address inside
* the memory regions unless this call returns successfully.
*
* Returns 0 on success, or %EBUSY on error. A warning
* message is also printed on failure.
*/
int macio_request_resources(struct macio_dev *dev, const char *name)
{
int i;
for (i = 0; i < dev->n_resources; i++)
if (macio_request_resource(dev, i, name))
goto err_out;
return 0;
err_out:
while(--i >= 0)
macio_release_resource(dev, i);
return -EBUSY;
}
/**
* macio_release_resources - Release reserved memory resources
* @dev: MacIO device whose resources were previously reserved
*/
void macio_release_resources(struct macio_dev *dev)
{
int i;
for (i = 0; i < dev->n_resources; i++)
macio_release_resource(dev, i);
}
#ifdef CONFIG_PCI
static int __devinit macio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct device_node* np;
struct macio_chip* chip;
if (ent->vendor != PCI_VENDOR_ID_APPLE)
return -ENODEV;
/* Note regarding refcounting: We assume pci_device_to_OF_node() is
* ported to new OF APIs and returns a node with refcount incremented.
*/
np = pci_device_to_OF_node(pdev);
if (np == NULL)
return -ENODEV;
/* The above assumption is wrong !!!
* fix that here for now until I fix the arch code
*/
of_node_get(np);
/* We also assume that pmac_feature will have done a get() on nodes
* stored in the macio chips array
*/
chip = macio_find(np, macio_unknown);
of_node_put(np);
if (chip == NULL)
return -ENODEV;
/* XXX Need locking ??? */
if (chip->lbus.pdev == NULL) {
chip->lbus.pdev = pdev;
chip->lbus.chip = chip;
pci_set_drvdata(pdev, &chip->lbus);
pci_set_master(pdev);
}
printk(KERN_INFO "MacIO PCI driver attached to %s chipset\n",
chip->name);
/*
* HACK ALERT: The WallStreet PowerBook and some OHare based machines
* have 2 macio ASICs. I must probe the "main" one first or IDE
* ordering will be incorrect. So I put on "hold" the second one since
* it seem to appear first on PCI
*/
if (chip->type == macio_gatwick || chip->type == macio_ohareII)
if (macio_chips[0].lbus.pdev == NULL) {
macio_on_hold = chip;
return 0;
}
macio_pci_add_devices(chip);
if (macio_on_hold && macio_chips[0].lbus.pdev != NULL) {
macio_pci_add_devices(macio_on_hold);
macio_on_hold = NULL;
}
return 0;
}
static void __devexit macio_pci_remove(struct pci_dev* pdev)
{
panic("removing of macio-asic not supported !\n");
}
/*
* MacIO is matched against any Apple ID, it's probe() function
* will then decide wether it applies or not
*/
static const struct pci_device_id __devinitdata pci_ids [] = { {
.vendor = PCI_VENDOR_ID_APPLE,
.device = PCI_ANY_ID,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
}, { /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE (pci, pci_ids);
/* pci driver glue; this is a "new style" PCI driver module */
static struct pci_driver macio_pci_driver = {
.name = (char *) "macio",
.id_table = pci_ids,
.probe = macio_pci_probe,
.remove = macio_pci_remove,
};
#endif /* CONFIG_PCI */
static int __init macio_module_init (void)
{
#ifdef CONFIG_PCI
int rc;
rc = pci_register_driver(&macio_pci_driver);
if (rc)
return rc;
#endif /* CONFIG_PCI */
return 0;
}
module_init(macio_module_init);
EXPORT_SYMBOL(macio_register_driver);
EXPORT_SYMBOL(macio_unregister_driver);
EXPORT_SYMBOL(macio_dev_get);
EXPORT_SYMBOL(macio_dev_put);
EXPORT_SYMBOL(macio_request_resource);
EXPORT_SYMBOL(macio_release_resource);
EXPORT_SYMBOL(macio_request_resources);
EXPORT_SYMBOL(macio_release_resources);
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