[linux-2.6-block.git] / arch / x86 / pci / acpi.c

#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/dmi.h>
#include <linux/slab.h>
#include <asm/numa.h>
#include <asm/pci_x86.h>

struct pci_root_info {
	struct acpi_device *bridge;
	char *name;
	unsigned int res_num;
	struct resource *res;
	struct pci_bus *bus;
	int busnum;
};

static bool pci_use_crs = true;

static int __init set_use_crs(const struct dmi_system_id *id)
{
	pci_use_crs = true;
	return 0;
}

static const struct dmi_system_id pci_use_crs_table[] __initconst = {
	/* http://bugzilla.kernel.org/show_bug.cgi?id=14183 */
	{
		.callback = set_use_crs,
		.ident = "IBM System x3800",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
			DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
		},
	},
	/* https://bugzilla.kernel.org/show_bug.cgi?id=16007 */
	/* 2006 AMD HT/VIA system with two host bridges */
        {
		.callback = set_use_crs,
		.ident = "ASRock ALiveSATA2-GLAN",
		.matches = {
			DMI_MATCH(DMI_PRODUCT_NAME, "ALiveSATA2-GLAN"),
                },
        },
	{}
};

void __init pci_acpi_crs_quirks(void)
{
	int year;

	if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
		pci_use_crs = false;

	dmi_check_system(pci_use_crs_table);

	/*
	 * If the user specifies "pci=use_crs" or "pci=nocrs" explicitly, that
	 * takes precedence over anything we figured out above.
	 */
	if (pci_probe & PCI_ROOT_NO_CRS)
		pci_use_crs = false;
	else if (pci_probe & PCI_USE__CRS)
		pci_use_crs = true;

	printk(KERN_INFO "PCI: %s host bridge windows from ACPI; "
	       "if necessary, use \"pci=%s\" and report a bug\n",
	       pci_use_crs ? "Using" : "Ignoring",
	       pci_use_crs ? "nocrs" : "use_crs");
}

static acpi_status
resource_to_addr(struct acpi_resource *resource,
			struct acpi_resource_address64 *addr)
{
	acpi_status status;
	struct acpi_resource_memory24 *memory24;
	struct acpi_resource_memory32 *memory32;
	struct acpi_resource_fixed_memory32 *fixed_memory32;

	memset(addr, 0, sizeof(*addr));
	switch (resource->type) {
	case ACPI_RESOURCE_TYPE_MEMORY24:
		memory24 = &resource->data.memory24;
		addr->resource_type = ACPI_MEMORY_RANGE;
		addr->minimum = memory24->minimum;
		addr->address_length = memory24->address_length;
		addr->maximum = addr->minimum + addr->address_length - 1;
		return AE_OK;
	case ACPI_RESOURCE_TYPE_MEMORY32:
		memory32 = &resource->data.memory32;
		addr->resource_type = ACPI_MEMORY_RANGE;
		addr->minimum = memory32->minimum;
		addr->address_length = memory32->address_length;
		addr->maximum = addr->minimum + addr->address_length - 1;
		return AE_OK;
	case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
		fixed_memory32 = &resource->data.fixed_memory32;
		addr->resource_type = ACPI_MEMORY_RANGE;
		addr->minimum = fixed_memory32->address;
		addr->address_length = fixed_memory32->address_length;
		addr->maximum = addr->minimum + addr->address_length - 1;
		return AE_OK;
	case ACPI_RESOURCE_TYPE_ADDRESS16:
	case ACPI_RESOURCE_TYPE_ADDRESS32:
	case ACPI_RESOURCE_TYPE_ADDRESS64:
		status = acpi_resource_to_address64(resource, addr);
		if (ACPI_SUCCESS(status) &&
		    (addr->resource_type == ACPI_MEMORY_RANGE ||
		    addr->resource_type == ACPI_IO_RANGE) &&
		    addr->address_length > 0) {
			return AE_OK;
		}
		break;
	}
	return AE_ERROR;
}

static acpi_status
count_resource(struct acpi_resource *acpi_res, void *data)
{
	struct pci_root_info *info = data;
	struct acpi_resource_address64 addr;
	acpi_status status;

	status = resource_to_addr(acpi_res, &addr);
	if (ACPI_SUCCESS(status))
		info->res_num++;
	return AE_OK;
}

static acpi_status
setup_resource(struct acpi_resource *acpi_res, void *data)
{
	struct pci_root_info *info = data;
	struct resource *res;
	struct acpi_resource_address64 addr;
	acpi_status status;
	unsigned long flags;
	struct resource *root, *conflict;
	u64 start, end;

	status = resource_to_addr(acpi_res, &addr);
	if (!ACPI_SUCCESS(status))
		return AE_OK;

	if (addr.resource_type == ACPI_MEMORY_RANGE) {
		root = &iomem_resource;
		flags = IORESOURCE_MEM;
		if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
			flags |= IORESOURCE_PREFETCH;
	} else if (addr.resource_type == ACPI_IO_RANGE) {
		root = &ioport_resource;
		flags = IORESOURCE_IO;
	} else
		return AE_OK;

	start = addr.minimum + addr.translation_offset;
	end = addr.maximum + addr.translation_offset;

	res = &info->res[info->res_num];
	res->name = info->name;
	res->flags = flags;
	res->start = start;
	res->end = end;
	res->child = NULL;

	if (!pci_use_crs) {
		dev_printk(KERN_DEBUG, &info->bridge->dev,
			   "host bridge window %pR (ignored)\n", res);
		return AE_OK;
	}

	conflict = insert_resource_conflict(root, res);
	if (conflict) {
		dev_err(&info->bridge->dev,
			"address space collision: host bridge window %pR "
			"conflicts with %s %pR\n",
			res, conflict->name, conflict);
	} else {
		pci_bus_add_resource(info->bus, res, 0);
		info->res_num++;
		if (addr.translation_offset)
			dev_info(&info->bridge->dev, "host bridge window %pR "
				 "(PCI address [%#llx-%#llx])\n",
				 res, res->start - addr.translation_offset,
				 res->end - addr.translation_offset);
		else
			dev_info(&info->bridge->dev,
				 "host bridge window %pR\n", res);
	}
	return AE_OK;
}

static void
get_current_resources(struct acpi_device *device, int busnum,
			int domain, struct pci_bus *bus)
{
	struct pci_root_info info;
	size_t size;

	if (pci_use_crs)
		pci_bus_remove_resources(bus);

	info.bridge = device;
	info.bus = bus;
	info.res_num = 0;
	acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
				&info);
	if (!info.res_num)
		return;

	size = sizeof(*info.res) * info.res_num;
	info.res = kmalloc(size, GFP_KERNEL);
	if (!info.res)
		goto res_alloc_fail;

	info.name = kasprintf(GFP_KERNEL, "PCI Bus %04x:%02x", domain, busnum);
	if (!info.name)
		goto name_alloc_fail;

	info.res_num = 0;
	acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
				&info);

	return;

name_alloc_fail:
	kfree(info.res);
res_alloc_fail:
	return;
}

struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
{
	struct acpi_device *device = root->device;
	int domain = root->segment;
	int busnum = root->secondary.start;
	struct pci_bus *bus;
	struct pci_sysdata *sd;
	int node;
#ifdef CONFIG_ACPI_NUMA
	int pxm;
#endif

	if (domain && !pci_domains_supported) {
		printk(KERN_WARNING "pci_bus %04x:%02x: "
		       "ignored (multiple domains not supported)\n",
		       domain, busnum);
		return NULL;
	}

	node = -1;
#ifdef CONFIG_ACPI_NUMA
	pxm = acpi_get_pxm(device->handle);
	if (pxm >= 0)
		node = pxm_to_node(pxm);
	if (node != -1)
		set_mp_bus_to_node(busnum, node);
	else
#endif
		node = get_mp_bus_to_node(busnum);

	if (node != -1 && !node_online(node))
		node = -1;

	/* Allocate per-root-bus (not per bus) arch-specific data.
	 * TODO: leak; this memory is never freed.
	 * It's arguable whether it's worth the trouble to care.
	 */
	sd = kzalloc(sizeof(*sd), GFP_KERNEL);
	if (!sd) {
		printk(KERN_WARNING "pci_bus %04x:%02x: "
		       "ignored (out of memory)\n", domain, busnum);
		return NULL;
	}

	sd->domain = domain;
	sd->node = node;
	/*
	 * Maybe the desired pci bus has been already scanned. In such case
	 * it is unnecessary to scan the pci bus with the given domain,busnum.
	 */
	bus = pci_find_bus(domain, busnum);
	if (bus) {
		/*
		 * If the desired bus exits, the content of bus->sysdata will
		 * be replaced by sd.
		 */
		memcpy(bus->sysdata, sd, sizeof(*sd));
		kfree(sd);
	} else {
		bus = pci_create_bus(NULL, busnum, &pci_root_ops, sd);
		if (bus) {
			get_current_resources(device, busnum, domain, bus);
			bus->subordinate = pci_scan_child_bus(bus);
		}
	}

	if (!bus)
		kfree(sd);

	if (bus && node != -1) {
#ifdef CONFIG_ACPI_NUMA
		if (pxm >= 0)
			dev_printk(KERN_DEBUG, &bus->dev,
				   "on NUMA node %d (pxm %d)\n", node, pxm);
#else
		dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
#endif
	}

	return bus;
}

int __init pci_acpi_init(void)
{
	struct pci_dev *dev = NULL;

	if (acpi_noirq)
		return -ENODEV;

	printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
	acpi_irq_penalty_init();
	pcibios_enable_irq = acpi_pci_irq_enable;
	pcibios_disable_irq = acpi_pci_irq_disable;
	x86_init.pci.init_irq = x86_init_noop;

	if (pci_routeirq) {
		/*
		 * PCI IRQ routing is set up by pci_enable_device(), but we
		 * also do it here in case there are still broken drivers that
		 * don't use pci_enable_device().
		 */
		printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
		for_each_pci_dev(dev)
			acpi_pci_irq_enable(dev);
	}

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	#include <linux/pci.h>
	2	#include <linux/acpi.h>
	3	#include <linux/init.h>
b33fa1f3	4	#include <linux/irq.h>
036fff4c	5	#include <linux/dmi.h>
5a0e3ad6	6	#include <linux/slab.h>
69e1a33f	7	#include <asm/numa.h>
82487711	8	#include <asm/pci_x86.h>
1da177e4	9
62f420f8	10	struct pci_root_info {
42887b29	11	struct acpi_device *bridge;
62f420f8 GH	12	char *name;
	13	unsigned int res_num;
	14	struct resource *res;
	15	struct pci_bus *bus;
	16	int busnum;
	17	};
	18
7bc5e3f2 BH	19	static bool pci_use_crs = true;
	20
	21	static int __init set_use_crs(const struct dmi_system_id *id)
	22	{
	23	pci_use_crs = true;
	24	return 0;
	25	}
	26
	27	static const struct dmi_system_id pci_use_crs_table[] __initconst = {
	28	/* http://bugzilla.kernel.org/show_bug.cgi?id=14183 */
	29	{
	30	.callback = set_use_crs,
	31	.ident = "IBM System x3800",
	32	.matches = {
	33	DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
	34	DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
	35	},
	36	},
2491762c BH	37	/* https://bugzilla.kernel.org/show_bug.cgi?id=16007 */
	38	/* 2006 AMD HT/VIA system with two host bridges */
	39	{
	40	.callback = set_use_crs,
	41	.ident = "ASRock ALiveSATA2-GLAN",
	42	.matches = {
	43	DMI_MATCH(DMI_PRODUCT_NAME, "ALiveSATA2-GLAN"),
	44	},
	45	},
7bc5e3f2 BH	46	{}
	47	};
	48
	49	void __init pci_acpi_crs_quirks(void)
	50	{
	51	int year;
	52
	53	if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
	54	pci_use_crs = false;
	55
	56	dmi_check_system(pci_use_crs_table);
	57
	58	/*
	59	* If the user specifies "pci=use_crs" or "pci=nocrs" explicitly, that
	60	* takes precedence over anything we figured out above.
	61	*/
	62	if (pci_probe & PCI_ROOT_NO_CRS)
	63	pci_use_crs = false;
	64	else if (pci_probe & PCI_USE__CRS)
	65	pci_use_crs = true;
	66
	67	printk(KERN_INFO "PCI: %s host bridge windows from ACPI; "
	68	"if necessary, use \"pci=%s\" and report a bug\n",
	69	pci_use_crs ? "Using" : "Ignoring",
	70	pci_use_crs ? "nocrs" : "use_crs");
	71	}
	72
62f420f8 GH	73	static acpi_status
	74	resource_to_addr(struct acpi_resource *resource,
	75	struct acpi_resource_address64 *addr)
	76	{
	77	acpi_status status;
66528fdd BH	78	struct acpi_resource_memory24 *memory24;
	79	struct acpi_resource_memory32 *memory32;
	80	struct acpi_resource_fixed_memory32 *fixed_memory32;
62f420f8	81
66528fdd BH	82	memset(addr, 0, sizeof(*addr));
	83	switch (resource->type) {
	84	case ACPI_RESOURCE_TYPE_MEMORY24:
	85	memory24 = &resource->data.memory24;
	86	addr->resource_type = ACPI_MEMORY_RANGE;
	87	addr->minimum = memory24->minimum;
	88	addr->address_length = memory24->address_length;
	89	addr->maximum = addr->minimum + addr->address_length - 1;
62f420f8	90	return AE_OK;
66528fdd BH	91	case ACPI_RESOURCE_TYPE_MEMORY32:
	92	memory32 = &resource->data.memory32;
	93	addr->resource_type = ACPI_MEMORY_RANGE;
	94	addr->minimum = memory32->minimum;
	95	addr->address_length = memory32->address_length;
	96	addr->maximum = addr->minimum + addr->address_length - 1;
	97	return AE_OK;
	98	case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
	99	fixed_memory32 = &resource->data.fixed_memory32;
	100	addr->resource_type = ACPI_MEMORY_RANGE;
	101	addr->minimum = fixed_memory32->address;
	102	addr->address_length = fixed_memory32->address_length;
	103	addr->maximum = addr->minimum + addr->address_length - 1;
	104	return AE_OK;
	105	case ACPI_RESOURCE_TYPE_ADDRESS16:
	106	case ACPI_RESOURCE_TYPE_ADDRESS32:
	107	case ACPI_RESOURCE_TYPE_ADDRESS64:
	108	status = acpi_resource_to_address64(resource, addr);
	109	if (ACPI_SUCCESS(status) &&
	110	(addr->resource_type == ACPI_MEMORY_RANGE \|\|
	111	addr->resource_type == ACPI_IO_RANGE) &&
	112	addr->address_length > 0) {
	113	return AE_OK;
	114	}
	115	break;
62f420f8 GH	116	}
	117	return AE_ERROR;
	118	}
	119
	120	static acpi_status
	121	count_resource(struct acpi_resource acpi_res, void data)
	122	{
	123	struct pci_root_info *info = data;
	124	struct acpi_resource_address64 addr;
	125	acpi_status status;
	126
	127	status = resource_to_addr(acpi_res, &addr);
	128	if (ACPI_SUCCESS(status))
	129	info->res_num++;
	130	return AE_OK;
	131	}
	132
	133	static acpi_status
	134	setup_resource(struct acpi_resource acpi_res, void data)
	135	{
	136	struct pci_root_info *info = data;
	137	struct resource *res;
	138	struct acpi_resource_address64 addr;
	139	acpi_status status;
	140	unsigned long flags;
eb9fc8ef	141	struct resource root, conflict;
48728e07	142	u64 start, end;
2cdb3f1d	143
62f420f8 GH	144	status = resource_to_addr(acpi_res, &addr);
	145	if (!ACPI_SUCCESS(status))
	146	return AE_OK;
	147
	148	if (addr.resource_type == ACPI_MEMORY_RANGE) {
	149	root = &iomem_resource;
	150	flags = IORESOURCE_MEM;
	151	if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
	152	flags \|= IORESOURCE_PREFETCH;
	153	} else if (addr.resource_type == ACPI_IO_RANGE) {
	154	root = &ioport_resource;
	155	flags = IORESOURCE_IO;
	156	} else
	157	return AE_OK;
	158
2cdb3f1d	159	start = addr.minimum + addr.translation_offset;
48728e07	160	end = addr.maximum + addr.translation_offset;
f9cde5ff	161
2cdb3f1d YL	162	res = &info->res[info->res_num];
	163	res->name = info->name;
	164	res->flags = flags;
	165	res->start = start;
	166	res->end = end;
	167	res->child = NULL;
	168
7bc5e3f2	169	if (!pci_use_crs) {
f1db6fde BH	170	dev_printk(KERN_DEBUG, &info->bridge->dev,
	171	"host bridge window %pR (ignored)\n", res);
	172	return AE_OK;
	173	}
	174
eb9fc8ef BH	175	conflict = insert_resource_conflict(root, res);
eb9fc8ef BH	176	if (conflict) {
c7dabef8	177	dev_err(&info->bridge->dev,
eb9fc8ef BH	178	"address space collision: host bridge window %pR "
	179	"conflicts with %s %pR\n",
	180	res, conflict->name, conflict);
62f420f8	181	} else {
2fe2abf8	182	pci_bus_add_resource(info->bus, res, 0);
62f420f8	183	info->res_num++;
42887b29	184	if (addr.translation_offset)
c7dabef8	185	dev_info(&info->bridge->dev, "host bridge window %pR "
42887b29 BH	186	"(PCI address [%#llx-%#llx])\n",
	187	res, res->start - addr.translation_offset,
	188	res->end - addr.translation_offset);
	189	else
	190	dev_info(&info->bridge->dev,
c7dabef8	191	"host bridge window %pR\n", res);
62f420f8 GH	192	}
	193	return AE_OK;
	194	}
	195
62f420f8 GH	196	static void
62f420f8 GH	197	get_current_resources(struct acpi_device *device, int busnum,
cb3576fa	198	int domain, struct pci_bus *bus)
62f420f8 GH	199	{
	200	struct pci_root_info info;
	201	size_t size;
	202
7bc5e3f2	203	if (pci_use_crs)
2fe2abf8	204	pci_bus_remove_resources(bus);
f1db6fde	205
42887b29	206	info.bridge = device;
62f420f8 GH	207	info.bus = bus;
	208	info.res_num = 0;
	209	acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
	210	&info);
	211	if (!info.res_num)
	212	return;
	213
	214	size = sizeof(info.res) info.res_num;
	215	info.res = kmalloc(size, GFP_KERNEL);
	216	if (!info.res)
	217	goto res_alloc_fail;
	218
b46fc5f2	219	info.name = kasprintf(GFP_KERNEL, "PCI Bus %04x:%02x", domain, busnum);
62f420f8 GH	220	if (!info.name)
62f420f8 GH	221	goto name_alloc_fail;
62f420f8 GH	222
	223	info.res_num = 0;
	224	acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
	225	&info);
62f420f8 GH	226
	227	return;
	228
	229	name_alloc_fail:
	230	kfree(info.res);
	231	res_alloc_fail:
	232	return;
	233	}
	234
57283776	235	struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
1da177e4	236	{
57283776 BH	237	struct acpi_device *device = root->device;
	238	int domain = root->segment;
	239	int busnum = root->secondary.start;
69e1a33f	240	struct pci_bus *bus;
08f1c192	241	struct pci_sysdata *sd;
871d5f8d YL	242	int node;
871d5f8d YL	243	#ifdef CONFIG_ACPI_NUMA
08f1c192	244	int pxm;
871d5f8d	245	#endif
08f1c192	246
a79e4198	247	if (domain && !pci_domains_supported) {
2a6bed83 BH	248	printk(KERN_WARNING "pci_bus %04x:%02x: "
	249	"ignored (multiple domains not supported)\n",
	250	domain, busnum);
a79e4198 JG	251	return NULL;
	252	}
	253
871d5f8d YL	254	node = -1;
	255	#ifdef CONFIG_ACPI_NUMA
	256	pxm = acpi_get_pxm(device->handle);
	257	if (pxm >= 0)
	258	node = pxm_to_node(pxm);
	259	if (node != -1)
	260	set_mp_bus_to_node(busnum, node);
	261	else
871d5f8d	262	#endif
871d5f8d	263	node = get_mp_bus_to_node(busnum);
b755de8d YL	264
	265	if (node != -1 && !node_online(node))
	266	node = -1;
871d5f8d	267
08f1c192 MBY	268	/* Allocate per-root-bus (not per bus) arch-specific data.
	269	* TODO: leak; this memory is never freed.
	270	* It's arguable whether it's worth the trouble to care.
	271	*/
	272	sd = kzalloc(sizeof(*sd), GFP_KERNEL);
	273	if (!sd) {
2a6bed83 BH	274	printk(KERN_WARNING "pci_bus %04x:%02x: "
2a6bed83 BH	275	"ignored (out of memory)\n", domain, busnum);
08f1c192 MBY	276	return NULL;
08f1c192 MBY	277	}
69e1a33f	278
a79e4198	279	sd->domain = domain;
871d5f8d	280	sd->node = node;
b87e81e5	281	/*
	282	* Maybe the desired pci bus has been already scanned. In such case
	283	* it is unnecessary to scan the pci bus with the given domain,busnum.
	284	*/
	285	bus = pci_find_bus(domain, busnum);
	286	if (bus) {
	287	/*
	288	* If the desired bus exits, the content of bus->sysdata will
	289	* be replaced by sd.
	290	*/
	291	memcpy(bus->sysdata, sd, sizeof(*sd));
	292	kfree(sd);
626fdfec YL	293	} else {
	294	bus = pci_create_bus(NULL, busnum, &pci_root_ops, sd);
	295	if (bus) {
f1db6fde	296	get_current_resources(device, busnum, domain, bus);
626fdfec YL	297	bus->subordinate = pci_scan_child_bus(bus);
	298	}
	299	}
08f1c192	300
08f1c192 MBY	301	if (!bus)
	302	kfree(sd);
	303
dbb6152e	304	if (bus && node != -1) {
69e1a33f	305	#ifdef CONFIG_ACPI_NUMA
dbb6152e	306	if (pxm >= 0)
2b8c2efe BH	307	dev_printk(KERN_DEBUG, &bus->dev,
2b8c2efe BH	308	"on NUMA node %d (pxm %d)\n", node, pxm);
dbb6152e	309	#else
2b8c2efe	310	dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
69e1a33f	311	#endif
dbb6152e	312	}
62f420f8	313
69e1a33f	314	return bus;
1da177e4 LT	315	}
1da177e4 LT	316
8dd779b1	317	int __init pci_acpi_init(void)
1da177e4 LT	318	{
	319	struct pci_dev *dev = NULL;
	320
1da177e4	321	if (acpi_noirq)
b72d0db9	322	return -ENODEV;
1da177e4 LT	323
	324	printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
	325	acpi_irq_penalty_init();
1da177e4	326	pcibios_enable_irq = acpi_pci_irq_enable;
87bec66b	327	pcibios_disable_irq = acpi_pci_irq_disable;
ab3b3793	328	x86_init.pci.init_irq = x86_init_noop;
1da177e4 LT	329
	330	if (pci_routeirq) {
	331	/*
	332	* PCI IRQ routing is set up by pci_enable_device(), but we
	333	* also do it here in case there are still broken drivers that
	334	* don't use pci_enable_device().
	335	*/
	336	printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
fb37fb96	337	for_each_pci_dev(dev)
1da177e4	338	acpi_pci_irq_enable(dev);
657472e9	339	}
1da177e4	340
1da177e4 LT	341	return 0;
1da177e4 LT	342	}