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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/pci.h>
2#include <linux/acpi.h>
3#include <linux/init.h>
Nick Pigginb33fa1f2005-10-01 02:34:42 +10004#include <linux/irq.h>
Gary Hade036fff42007-10-03 15:56:14 -07005#include <linux/dmi.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +09006#include <linux/slab.h>
Andi Kleen69e1a332005-09-12 18:49:24 +02007#include <asm/numa.h>
Jaswinder Singh Rajput82487712008-12-27 18:32:28 +05308#include <asm/pci_x86.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009
Gary Hade62f420f2007-10-03 15:56:51 -070010struct pci_root_info {
Bjorn Helgaas42887b22009-10-06 15:33:49 -060011 struct acpi_device *bridge;
Yinghai Lufe057252012-04-02 18:31:53 -070012 char name[16];
Gary Hade62f420f2007-10-03 15:56:51 -070013 unsigned int res_num;
14 struct resource *res;
Gary Hade62f420f2007-10-03 15:56:51 -070015 int busnum;
Yinghai Lu35cb05e2012-04-02 18:31:53 -070016 struct pci_sysdata sd;
Gary Hade62f420f2007-10-03 15:56:51 -070017};
18
Bjorn Helgaas7bc5e3f2010-02-23 10:24:41 -070019static bool pci_use_crs = true;
20
21static int __init set_use_crs(const struct dmi_system_id *id)
22{
23 pci_use_crs = true;
24 return 0;
25}
26
Dave Jones28c3c052011-12-30 14:37:05 -050027static int __init set_nouse_crs(const struct dmi_system_id *id)
28{
29 pci_use_crs = false;
30 return 0;
31}
32
Bjorn Helgaas7bc5e3f2010-02-23 10:24:41 -070033static const struct dmi_system_id pci_use_crs_table[] __initconst = {
34 /* http://bugzilla.kernel.org/show_bug.cgi?id=14183 */
35 {
36 .callback = set_use_crs,
37 .ident = "IBM System x3800",
38 .matches = {
39 DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
40 DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
41 },
42 },
Bjorn Helgaas24917622010-07-23 12:53:27 -060043 /* https://bugzilla.kernel.org/show_bug.cgi?id=16007 */
44 /* 2006 AMD HT/VIA system with two host bridges */
45 {
46 .callback = set_use_crs,
47 .ident = "ASRock ALiveSATA2-GLAN",
48 .matches = {
49 DMI_MATCH(DMI_PRODUCT_NAME, "ALiveSATA2-GLAN"),
50 },
51 },
Paul Menzel29cf7a302011-08-31 17:07:10 +020052 /* https://bugzilla.kernel.org/show_bug.cgi?id=30552 */
53 /* 2006 AMD HT/VIA system with two host bridges */
54 {
55 .callback = set_use_crs,
56 .ident = "ASUS M2V-MX SE",
57 .matches = {
58 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
59 DMI_MATCH(DMI_BOARD_NAME, "M2V-MX SE"),
60 DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
61 },
62 },
Jonathan Nieder841137172012-02-28 11:51:10 -070063 /* https://bugzilla.kernel.org/show_bug.cgi?id=42619 */
64 {
65 .callback = set_use_crs,
66 .ident = "MSI MS-7253",
67 .matches = {
68 DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
69 DMI_MATCH(DMI_BOARD_NAME, "MS-7253"),
70 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
Jonathan Nieder841137172012-02-28 11:51:10 -070071 },
72 },
Dave Jones28c3c052011-12-30 14:37:05 -050073
Dave Jonese7027812012-01-04 11:33:12 -050074 /* Now for the blacklist.. */
75
76 /* https://bugzilla.redhat.com/show_bug.cgi?id=769657 */
77 {
78 .callback = set_nouse_crs,
79 .ident = "Dell Studio 1557",
80 .matches = {
81 DMI_MATCH(DMI_BOARD_VENDOR, "Dell Inc."),
82 DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1557"),
83 DMI_MATCH(DMI_BIOS_VERSION, "A09"),
84 },
85 },
Dave Jones8b6a5af2012-01-04 11:30:52 -050086 /* https://bugzilla.redhat.com/show_bug.cgi?id=769657 */
87 {
88 .callback = set_nouse_crs,
89 .ident = "Thinkpad SL510",
90 .matches = {
91 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
92 DMI_MATCH(DMI_BOARD_NAME, "2847DFG"),
93 DMI_MATCH(DMI_BIOS_VERSION, "6JET85WW (1.43 )"),
94 },
95 },
Bjorn Helgaas7bc5e3f2010-02-23 10:24:41 -070096 {}
97};
98
99void __init pci_acpi_crs_quirks(void)
100{
101 int year;
102
103 if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
104 pci_use_crs = false;
105
106 dmi_check_system(pci_use_crs_table);
107
108 /*
109 * If the user specifies "pci=use_crs" or "pci=nocrs" explicitly, that
110 * takes precedence over anything we figured out above.
111 */
112 if (pci_probe & PCI_ROOT_NO_CRS)
113 pci_use_crs = false;
114 else if (pci_probe & PCI_USE__CRS)
115 pci_use_crs = true;
116
117 printk(KERN_INFO "PCI: %s host bridge windows from ACPI; "
118 "if necessary, use \"pci=%s\" and report a bug\n",
119 pci_use_crs ? "Using" : "Ignoring",
120 pci_use_crs ? "nocrs" : "use_crs");
121}
122
Gary Hade62f420f2007-10-03 15:56:51 -0700123static acpi_status
124resource_to_addr(struct acpi_resource *resource,
125 struct acpi_resource_address64 *addr)
126{
127 acpi_status status;
Bjorn Helgaas66528fd2010-04-20 13:52:41 -0600128 struct acpi_resource_memory24 *memory24;
129 struct acpi_resource_memory32 *memory32;
130 struct acpi_resource_fixed_memory32 *fixed_memory32;
Gary Hade62f420f2007-10-03 15:56:51 -0700131
Bjorn Helgaas66528fd2010-04-20 13:52:41 -0600132 memset(addr, 0, sizeof(*addr));
133 switch (resource->type) {
134 case ACPI_RESOURCE_TYPE_MEMORY24:
135 memory24 = &resource->data.memory24;
136 addr->resource_type = ACPI_MEMORY_RANGE;
137 addr->minimum = memory24->minimum;
138 addr->address_length = memory24->address_length;
139 addr->maximum = addr->minimum + addr->address_length - 1;
Gary Hade62f420f2007-10-03 15:56:51 -0700140 return AE_OK;
Bjorn Helgaas66528fd2010-04-20 13:52:41 -0600141 case ACPI_RESOURCE_TYPE_MEMORY32:
142 memory32 = &resource->data.memory32;
143 addr->resource_type = ACPI_MEMORY_RANGE;
144 addr->minimum = memory32->minimum;
145 addr->address_length = memory32->address_length;
146 addr->maximum = addr->minimum + addr->address_length - 1;
147 return AE_OK;
148 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
149 fixed_memory32 = &resource->data.fixed_memory32;
150 addr->resource_type = ACPI_MEMORY_RANGE;
151 addr->minimum = fixed_memory32->address;
152 addr->address_length = fixed_memory32->address_length;
153 addr->maximum = addr->minimum + addr->address_length - 1;
154 return AE_OK;
155 case ACPI_RESOURCE_TYPE_ADDRESS16:
156 case ACPI_RESOURCE_TYPE_ADDRESS32:
157 case ACPI_RESOURCE_TYPE_ADDRESS64:
158 status = acpi_resource_to_address64(resource, addr);
159 if (ACPI_SUCCESS(status) &&
160 (addr->resource_type == ACPI_MEMORY_RANGE ||
161 addr->resource_type == ACPI_IO_RANGE) &&
162 addr->address_length > 0) {
163 return AE_OK;
164 }
165 break;
Gary Hade62f420f2007-10-03 15:56:51 -0700166 }
167 return AE_ERROR;
168}
169
170static acpi_status
171count_resource(struct acpi_resource *acpi_res, void *data)
172{
173 struct pci_root_info *info = data;
174 struct acpi_resource_address64 addr;
175 acpi_status status;
176
177 status = resource_to_addr(acpi_res, &addr);
178 if (ACPI_SUCCESS(status))
179 info->res_num++;
180 return AE_OK;
181}
182
183static acpi_status
184setup_resource(struct acpi_resource *acpi_res, void *data)
185{
186 struct pci_root_info *info = data;
187 struct resource *res;
188 struct acpi_resource_address64 addr;
189 acpi_status status;
190 unsigned long flags;
Gary Hadeae5cd862011-11-14 15:42:16 -0800191 u64 start, orig_end, end;
Yinghai Lu2cdb3f12009-06-24 19:01:19 -0700192
Gary Hade62f420f2007-10-03 15:56:51 -0700193 status = resource_to_addr(acpi_res, &addr);
194 if (!ACPI_SUCCESS(status))
195 return AE_OK;
196
197 if (addr.resource_type == ACPI_MEMORY_RANGE) {
Gary Hade62f420f2007-10-03 15:56:51 -0700198 flags = IORESOURCE_MEM;
199 if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
200 flags |= IORESOURCE_PREFETCH;
201 } else if (addr.resource_type == ACPI_IO_RANGE) {
Gary Hade62f420f2007-10-03 15:56:51 -0700202 flags = IORESOURCE_IO;
203 } else
204 return AE_OK;
205
Yinghai Lu2cdb3f12009-06-24 19:01:19 -0700206 start = addr.minimum + addr.translation_offset;
Gary Hadeae5cd862011-11-14 15:42:16 -0800207 orig_end = end = addr.maximum + addr.translation_offset;
208
209 /* Exclude non-addressable range or non-addressable portion of range */
210 end = min(end, (u64)iomem_resource.end);
211 if (end <= start) {
212 dev_info(&info->bridge->dev,
213 "host bridge window [%#llx-%#llx] "
214 "(ignored, not CPU addressable)\n", start, orig_end);
215 return AE_OK;
216 } else if (orig_end != end) {
217 dev_info(&info->bridge->dev,
218 "host bridge window [%#llx-%#llx] "
219 "([%#llx-%#llx] ignored, not CPU addressable)\n",
220 start, orig_end, end + 1, orig_end);
221 }
Gary Hadef9cde5f2009-05-27 12:41:44 -0700222
Yinghai Lu2cdb3f12009-06-24 19:01:19 -0700223 res = &info->res[info->res_num];
224 res->name = info->name;
225 res->flags = flags;
226 res->start = start;
227 res->end = end;
228 res->child = NULL;
229
Bjorn Helgaas7bc5e3f2010-02-23 10:24:41 -0700230 if (!pci_use_crs) {
Bjorn Helgaasf1db6fd2009-11-04 10:39:13 -0700231 dev_printk(KERN_DEBUG, &info->bridge->dev,
232 "host bridge window %pR (ignored)\n", res);
233 return AE_OK;
234 }
235
Bjorn Helgaas4723d0f2010-09-22 11:09:19 -0600236 info->res_num++;
237 if (addr.translation_offset)
238 dev_info(&info->bridge->dev, "host bridge window %pR "
239 "(PCI address [%#llx-%#llx])\n",
240 res, res->start - addr.translation_offset,
241 res->end - addr.translation_offset);
242 else
243 dev_info(&info->bridge->dev, "host bridge window %pR\n", res);
244
Gary Hade62f420f2007-10-03 15:56:51 -0700245 return AE_OK;
246}
247
Márton Németh6e33a852011-05-14 19:27:33 +0200248static void coalesce_windows(struct pci_root_info *info, unsigned long type)
Bjorn Helgaas4723d0f2010-09-22 11:09:19 -0600249{
250 int i, j;
251 struct resource *res1, *res2;
252
253 for (i = 0; i < info->res_num; i++) {
254 res1 = &info->res[i];
255 if (!(res1->flags & type))
256 continue;
257
258 for (j = i + 1; j < info->res_num; j++) {
259 res2 = &info->res[j];
260 if (!(res2->flags & type))
261 continue;
262
263 /*
264 * I don't like throwing away windows because then
265 * our resources no longer match the ACPI _CRS, but
266 * the kernel resource tree doesn't allow overlaps.
267 */
Wei Yang74d24b22012-04-26 15:32:55 +0800268 if (resource_overlaps(res1, res2)) {
Bjorn Helgaas4723d0f2010-09-22 11:09:19 -0600269 res1->start = min(res1->start, res2->start);
270 res1->end = max(res1->end, res2->end);
271 dev_info(&info->bridge->dev,
272 "host bridge window expanded to %pR; %pR ignored\n",
273 res1, res2);
274 res2->flags = 0;
275 }
276 }
277 }
278}
279
Yinghai Lu9a03d282012-04-02 18:31:53 -0700280static void add_resources(struct pci_root_info *info,
281 struct list_head *resources)
Bjorn Helgaas4723d0f2010-09-22 11:09:19 -0600282{
283 int i;
284 struct resource *res, *root, *conflict;
285
Bjorn Helgaas4723d0f2010-09-22 11:09:19 -0600286 coalesce_windows(info, IORESOURCE_MEM);
287 coalesce_windows(info, IORESOURCE_IO);
288
289 for (i = 0; i < info->res_num; i++) {
290 res = &info->res[i];
291
292 if (res->flags & IORESOURCE_MEM)
293 root = &iomem_resource;
294 else if (res->flags & IORESOURCE_IO)
295 root = &ioport_resource;
296 else
297 continue;
298
299 conflict = insert_resource_conflict(root, res);
300 if (conflict)
Bjorn Helgaas43d786e2011-07-02 10:47:12 -0600301 dev_info(&info->bridge->dev,
302 "ignoring host bridge window %pR (conflicts with %s %pR)\n",
303 res, conflict->name, conflict);
Bjorn Helgaas4723d0f2010-09-22 11:09:19 -0600304 else
Yinghai Lu9a03d282012-04-02 18:31:53 -0700305 pci_add_resource(resources, res);
Bjorn Helgaas4723d0f2010-09-22 11:09:19 -0600306 }
307}
308
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700309static void free_pci_root_info_res(struct pci_root_info *info)
Yinghai Lubaa495d2012-04-02 18:31:53 -0700310{
Yinghai Lubaa495d2012-04-02 18:31:53 -0700311 kfree(info->res);
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700312 info->res = NULL;
313 info->res_num = 0;
314}
315
316static void __release_pci_root_info(struct pci_root_info *info)
317{
318 int i;
319 struct resource *res;
320
321 for (i = 0; i < info->res_num; i++) {
322 res = &info->res[i];
323
324 if (!res->parent)
325 continue;
326
327 if (!(res->flags & (IORESOURCE_MEM | IORESOURCE_IO)))
328 continue;
329
330 release_resource(res);
331 }
332
333 free_pci_root_info_res(info);
334
335 kfree(info);
336}
337static void release_pci_root_info(struct pci_host_bridge *bridge)
338{
339 struct pci_root_info *info = bridge->release_data;
340
341 __release_pci_root_info(info);
Yinghai Lubaa495d2012-04-02 18:31:53 -0700342}
343
Gary Hade62f420f2007-10-03 15:56:51 -0700344static void
Yinghai Lu9a03d282012-04-02 18:31:53 -0700345probe_pci_root_info(struct pci_root_info *info, struct acpi_device *device,
346 int busnum, int domain)
Gary Hade62f420f2007-10-03 15:56:51 -0700347{
Gary Hade62f420f2007-10-03 15:56:51 -0700348 size_t size;
349
Yinghai Lubaa495d2012-04-02 18:31:53 -0700350 info->bridge = device;
351 info->res_num = 0;
Gary Hade62f420f2007-10-03 15:56:51 -0700352 acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
Yinghai Lubaa495d2012-04-02 18:31:53 -0700353 info);
354 if (!info->res_num)
Gary Hade62f420f2007-10-03 15:56:51 -0700355 return;
356
Yinghai Lubaa495d2012-04-02 18:31:53 -0700357 size = sizeof(*info->res) * info->res_num;
Yinghai Lu9a03d282012-04-02 18:31:53 -0700358 info->res_num = 0;
Yinghai Lubaa495d2012-04-02 18:31:53 -0700359 info->res = kmalloc(size, GFP_KERNEL);
360 if (!info->res)
Bjorn Helgaas2cd69752011-10-28 16:28:14 -0600361 return;
Gary Hade62f420f2007-10-03 15:56:51 -0700362
Yinghai Lufe057252012-04-02 18:31:53 -0700363 sprintf(info->name, "PCI Bus %04x:%02x", domain, busnum);
Gary Hade62f420f2007-10-03 15:56:51 -0700364
Gary Hade62f420f2007-10-03 15:56:51 -0700365 acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
Yinghai Lubaa495d2012-04-02 18:31:53 -0700366 info);
Gary Hade62f420f2007-10-03 15:56:51 -0700367}
368
Bjorn Helgaas57283772010-03-11 12:20:11 -0700369struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370{
Bjorn Helgaas57283772010-03-11 12:20:11 -0700371 struct acpi_device *device = root->device;
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700372 struct pci_root_info *info = NULL;
Bjorn Helgaas57283772010-03-11 12:20:11 -0700373 int domain = root->segment;
374 int busnum = root->secondary.start;
Bjorn Helgaas2cd69752011-10-28 16:28:14 -0600375 LIST_HEAD(resources);
Andi Kleen69e1a332005-09-12 18:49:24 +0200376 struct pci_bus *bus;
Muli Ben-Yehuda08f1c192007-07-22 00:23:39 +0300377 struct pci_sysdata *sd;
Yinghai Lu871d5f82008-02-19 03:20:09 -0800378 int node;
379#ifdef CONFIG_ACPI_NUMA
Muli Ben-Yehuda08f1c192007-07-22 00:23:39 +0300380 int pxm;
Yinghai Lu871d5f82008-02-19 03:20:09 -0800381#endif
Andi Kleen69e1a332005-09-12 18:49:24 +0200382
Jeff Garzika79e4192007-10-11 16:58:30 -0400383 if (domain && !pci_domains_supported) {
Bjorn Helgaas2a6bed82009-11-04 10:32:47 -0700384 printk(KERN_WARNING "pci_bus %04x:%02x: "
385 "ignored (multiple domains not supported)\n",
386 domain, busnum);
Jeff Garzika79e4192007-10-11 16:58:30 -0400387 return NULL;
388 }
389
Yinghai Lu871d5f82008-02-19 03:20:09 -0800390 node = -1;
391#ifdef CONFIG_ACPI_NUMA
392 pxm = acpi_get_pxm(device->handle);
393 if (pxm >= 0)
394 node = pxm_to_node(pxm);
395 if (node != -1)
396 set_mp_bus_to_node(busnum, node);
397 else
Yinghai Lu871d5f82008-02-19 03:20:09 -0800398#endif
Yinghai Lu871d5f82008-02-19 03:20:09 -0800399 node = get_mp_bus_to_node(busnum);
Yinghai Lub755de82008-02-20 12:41:52 -0800400
401 if (node != -1 && !node_online(node))
402 node = -1;
Yinghai Lu871d5f82008-02-19 03:20:09 -0800403
Yinghai Lu35cb05e2012-04-02 18:31:53 -0700404 info = kzalloc(sizeof(*info), GFP_KERNEL);
405 if (!info) {
Bjorn Helgaas2a6bed82009-11-04 10:32:47 -0700406 printk(KERN_WARNING "pci_bus %04x:%02x: "
407 "ignored (out of memory)\n", domain, busnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 return NULL;
409 }
410
Yinghai Lu35cb05e2012-04-02 18:31:53 -0700411 sd = &info->sd;
Jeff Garzika79e4192007-10-11 16:58:30 -0400412 sd->domain = domain;
Yinghai Lu871d5f82008-02-19 03:20:09 -0800413 sd->node = node;
yakui.zhao@intel.comb87e81e2008-04-15 14:34:49 -0700414 /*
415 * Maybe the desired pci bus has been already scanned. In such case
416 * it is unnecessary to scan the pci bus with the given domain,busnum.
417 */
418 bus = pci_find_bus(domain, busnum);
419 if (bus) {
420 /*
421 * If the desired bus exits, the content of bus->sysdata will
422 * be replaced by sd.
423 */
424 memcpy(bus->sysdata, sd, sizeof(*sd));
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700425 kfree(info);
Yinghai Lu626fdfe2009-06-24 20:00:12 -0700426 } else {
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700427 probe_pci_root_info(info, device, busnum, domain);
Bjorn Helgaas316d86f2012-01-17 17:41:21 -0700428
429 /*
430 * _CRS with no apertures is normal, so only fall back to
431 * defaults or native bridge info if we're ignoring _CRS.
432 */
Yinghai Lu9a03d282012-04-02 18:31:53 -0700433 if (pci_use_crs)
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700434 add_resources(info, &resources);
Yinghai Lu9a03d282012-04-02 18:31:53 -0700435 else {
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700436 free_pci_root_info_res(info);
Bjorn Helgaas2cd69752011-10-28 16:28:14 -0600437 x86_pci_root_bus_resources(busnum, &resources);
Yinghai Lu9a03d282012-04-02 18:31:53 -0700438 }
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700439
Bjorn Helgaas2cd69752011-10-28 16:28:14 -0600440 bus = pci_create_root_bus(NULL, busnum, &pci_root_ops, sd,
441 &resources);
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700442 if (bus) {
Yinghai Lu626fdfe2009-06-24 20:00:12 -0700443 bus->subordinate = pci_scan_child_bus(bus);
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700444 pci_set_host_bridge_release(
445 to_pci_host_bridge(bus->bridge),
446 release_pci_root_info, info);
447 } else {
Bjorn Helgaas2cd69752011-10-28 16:28:14 -0600448 pci_free_resource_list(&resources);
Yinghai Lufd3b0c12012-04-02 18:31:53 -0700449 __release_pci_root_info(info);
450 }
Yinghai Lu626fdfe2009-06-24 20:00:12 -0700451 }
Muli Ben-Yehuda08f1c192007-07-22 00:23:39 +0300452
Jon Masonb03e7492011-07-20 15:20:54 -0500453 /* After the PCI-E bus has been walked and all devices discovered,
454 * configure any settings of the fabric that might be necessary.
455 */
456 if (bus) {
457 struct pci_bus *child;
Shyam Iyer5307f6d2011-09-08 16:41:17 -0500458 list_for_each_entry(child, &bus->children, node) {
459 struct pci_dev *self = child->self;
460 if (!self)
461 continue;
462
463 pcie_bus_configure_settings(child, self->pcie_mpss);
464 }
Jon Masonb03e7492011-07-20 15:20:54 -0500465 }
466
Yinghai Ludbb61522008-04-19 01:30:16 -0700467 if (bus && node != -1) {
Andi Kleen69e1a332005-09-12 18:49:24 +0200468#ifdef CONFIG_ACPI_NUMA
Yinghai Ludbb61522008-04-19 01:30:16 -0700469 if (pxm >= 0)
Bjorn Helgaas2b8c2ef2008-12-18 16:34:51 -0700470 dev_printk(KERN_DEBUG, &bus->dev,
471 "on NUMA node %d (pxm %d)\n", node, pxm);
Yinghai Ludbb61522008-04-19 01:30:16 -0700472#else
Bjorn Helgaas2b8c2ef2008-12-18 16:34:51 -0700473 dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
Andi Kleen69e1a332005-09-12 18:49:24 +0200474#endif
Yinghai Ludbb61522008-04-19 01:30:16 -0700475 }
Gary Hade62f420f2007-10-03 15:56:51 -0700476
Andi Kleen69e1a332005-09-12 18:49:24 +0200477 return bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478}
479
Robert Richter8dd779b2008-07-02 22:50:29 +0200480int __init pci_acpi_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481{
482 struct pci_dev *dev = NULL;
483
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 if (acpi_noirq)
Thomas Gleixnerb72d0db2009-08-29 16:24:51 +0200485 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486
487 printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
488 acpi_irq_penalty_init();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 pcibios_enable_irq = acpi_pci_irq_enable;
David Shaohua Li87bec662005-07-27 23:02:00 -0400490 pcibios_disable_irq = acpi_pci_irq_disable;
Thomas Gleixnerab3b3792009-08-29 17:47:33 +0200491 x86_init.pci.init_irq = x86_init_noop;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
493 if (pci_routeirq) {
494 /*
495 * PCI IRQ routing is set up by pci_enable_device(), but we
496 * also do it here in case there are still broken drivers that
497 * don't use pci_enable_device().
498 */
499 printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
Hanna Linderfb37fb92005-11-06 23:39:36 -0800500 for_each_pci_dev(dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 acpi_pci_irq_enable(dev);
Bjorn Helgaas657472e92008-02-18 09:44:13 -0700502 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 return 0;
505}