Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Low-Level PCI Support for PC | |
3 | * | |
4 | * (c) 1999--2000 Martin Mares <mj@ucw.cz> | |
5 | */ | |
6 | ||
7 | #include <linux/sched.h> | |
8 | #include <linux/pci.h> | |
9 | #include <linux/ioport.h> | |
10 | #include <linux/init.h> | |
8c4b2cf9 | 11 | #include <linux/dmi.h> |
5a0e3ad6 | 12 | #include <linux/slab.h> |
1da177e4 | 13 | |
284f5f9d | 14 | #include <asm-generic/pci-bridge.h> |
1da177e4 LT |
15 | #include <asm/acpi.h> |
16 | #include <asm/segment.h> | |
17 | #include <asm/io.h> | |
18 | #include <asm/smp.h> | |
82487711 | 19 | #include <asm/pci_x86.h> |
1da177e4 | 20 | |
1da177e4 LT |
21 | unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 | |
22 | PCI_PROBE_MMCONF; | |
23 | ||
e3f2baeb | 24 | unsigned int pci_early_dump_regs; |
2b290da0 | 25 | static int pci_bf_sort; |
6e8af08d | 26 | static int smbios_type_b1_flag; |
1da177e4 | 27 | int pci_routeirq; |
a9322f64 | 28 | int noioapicquirk; |
41b9eb26 SA |
29 | #ifdef CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS |
30 | int noioapicreroute = 0; | |
31 | #else | |
9197979b | 32 | int noioapicreroute = 1; |
41b9eb26 | 33 | #endif |
1da177e4 | 34 | int pcibios_last_bus = -1; |
120bb424 | 35 | unsigned long pirq_table_addr; |
36 | struct pci_bus *pci_root_bus; | |
72da0b07 JB |
37 | const struct pci_raw_ops *__read_mostly raw_pci_ops; |
38 | const struct pci_raw_ops *__read_mostly raw_pci_ext_ops; | |
b6ce068a MW |
39 | |
40 | int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, | |
41 | int reg, int len, u32 *val) | |
42 | { | |
beef3129 | 43 | if (domain == 0 && reg < 256 && raw_pci_ops) |
b6ce068a MW |
44 | return raw_pci_ops->read(domain, bus, devfn, reg, len, val); |
45 | if (raw_pci_ext_ops) | |
46 | return raw_pci_ext_ops->read(domain, bus, devfn, reg, len, val); | |
47 | return -EINVAL; | |
48 | } | |
49 | ||
50 | int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, | |
51 | int reg, int len, u32 val) | |
52 | { | |
beef3129 | 53 | if (domain == 0 && reg < 256 && raw_pci_ops) |
b6ce068a MW |
54 | return raw_pci_ops->write(domain, bus, devfn, reg, len, val); |
55 | if (raw_pci_ext_ops) | |
56 | return raw_pci_ext_ops->write(domain, bus, devfn, reg, len, val); | |
57 | return -EINVAL; | |
58 | } | |
1da177e4 LT |
59 | |
60 | static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value) | |
61 | { | |
b6ce068a | 62 | return raw_pci_read(pci_domain_nr(bus), bus->number, |
a79e4198 | 63 | devfn, where, size, value); |
1da177e4 LT |
64 | } |
65 | ||
66 | static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) | |
67 | { | |
b6ce068a | 68 | return raw_pci_write(pci_domain_nr(bus), bus->number, |
a79e4198 | 69 | devfn, where, size, value); |
1da177e4 LT |
70 | } |
71 | ||
72 | struct pci_ops pci_root_ops = { | |
73 | .read = pci_read, | |
74 | .write = pci_write, | |
75 | }; | |
76 | ||
1da177e4 LT |
77 | /* |
78 | * This interrupt-safe spinlock protects all accesses to PCI | |
79 | * configuration space. | |
80 | */ | |
d19f61f0 | 81 | DEFINE_RAW_SPINLOCK(pci_config_lock); |
1da177e4 | 82 | |
13a6ddb0 YL |
83 | static int __devinit can_skip_ioresource_align(const struct dmi_system_id *d) |
84 | { | |
85 | pci_probe |= PCI_CAN_SKIP_ISA_ALIGN; | |
86 | printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident); | |
87 | return 0; | |
88 | } | |
89 | ||
821508d4 | 90 | static const struct dmi_system_id can_skip_pciprobe_dmi_table[] __devinitconst = { |
13a6ddb0 YL |
91 | /* |
92 | * Systems where PCI IO resource ISA alignment can be skipped | |
93 | * when the ISA enable bit in the bridge control is not set | |
94 | */ | |
95 | { | |
96 | .callback = can_skip_ioresource_align, | |
97 | .ident = "IBM System x3800", | |
98 | .matches = { | |
99 | DMI_MATCH(DMI_SYS_VENDOR, "IBM"), | |
100 | DMI_MATCH(DMI_PRODUCT_NAME, "x3800"), | |
101 | }, | |
102 | }, | |
103 | { | |
104 | .callback = can_skip_ioresource_align, | |
105 | .ident = "IBM System x3850", | |
106 | .matches = { | |
107 | DMI_MATCH(DMI_SYS_VENDOR, "IBM"), | |
108 | DMI_MATCH(DMI_PRODUCT_NAME, "x3850"), | |
109 | }, | |
110 | }, | |
111 | { | |
112 | .callback = can_skip_ioresource_align, | |
113 | .ident = "IBM System x3950", | |
114 | .matches = { | |
115 | DMI_MATCH(DMI_SYS_VENDOR, "IBM"), | |
116 | DMI_MATCH(DMI_PRODUCT_NAME, "x3950"), | |
117 | }, | |
118 | }, | |
119 | {} | |
120 | }; | |
121 | ||
122 | void __init dmi_check_skip_isa_align(void) | |
123 | { | |
124 | dmi_check_system(can_skip_pciprobe_dmi_table); | |
125 | } | |
126 | ||
bb71ad88 GH |
127 | static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) |
128 | { | |
129 | struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE]; | |
7bd1c365 MH |
130 | struct resource *bar_r; |
131 | int bar; | |
132 | ||
133 | if (pci_probe & PCI_NOASSIGN_BARS) { | |
134 | /* | |
135 | * If the BIOS did not assign the BAR, zero out the | |
136 | * resource so the kernel doesn't attmept to assign | |
137 | * it later on in pci_assign_unassigned_resources | |
138 | */ | |
139 | for (bar = 0; bar <= PCI_STD_RESOURCE_END; bar++) { | |
140 | bar_r = &dev->resource[bar]; | |
141 | if (bar_r->start == 0 && bar_r->end != 0) { | |
142 | bar_r->flags = 0; | |
143 | bar_r->end = 0; | |
144 | } | |
145 | } | |
146 | } | |
bb71ad88 GH |
147 | |
148 | if (pci_probe & PCI_NOASSIGN_ROMS) { | |
149 | if (rom_r->parent) | |
150 | return; | |
151 | if (rom_r->start) { | |
152 | /* we deal with BIOS assigned ROM later */ | |
153 | return; | |
154 | } | |
155 | rom_r->start = rom_r->end = rom_r->flags = 0; | |
156 | } | |
157 | } | |
158 | ||
1da177e4 LT |
159 | /* |
160 | * Called after each bus is probed, but before its children | |
161 | * are examined. | |
162 | */ | |
163 | ||
0bb1be3e | 164 | void __devinit pcibios_fixup_bus(struct pci_bus *b) |
1da177e4 | 165 | { |
bb71ad88 GH |
166 | struct pci_dev *dev; |
167 | ||
1da177e4 | 168 | pci_read_bridge_bases(b); |
bb71ad88 GH |
169 | list_for_each_entry(dev, &b->devices, bus_list) |
170 | pcibios_fixup_device_resources(dev); | |
1da177e4 LT |
171 | } |
172 | ||
6b4b78fe MD |
173 | /* |
174 | * Only use DMI information to set this if nothing was passed | |
175 | * on the kernel command line (which was parsed earlier). | |
176 | */ | |
177 | ||
1855256c | 178 | static int __devinit set_bf_sort(const struct dmi_system_id *d) |
6b4b78fe MD |
179 | { |
180 | if (pci_bf_sort == pci_bf_sort_default) { | |
181 | pci_bf_sort = pci_dmi_bf; | |
182 | printk(KERN_INFO "PCI: %s detected, enabling pci=bfsort.\n", d->ident); | |
183 | } | |
184 | return 0; | |
185 | } | |
186 | ||
6e8af08d ND |
187 | static void __devinit read_dmi_type_b1(const struct dmi_header *dm, |
188 | void *private_data) | |
189 | { | |
190 | u8 *d = (u8 *)dm + 4; | |
191 | ||
192 | if (dm->type != 0xB1) | |
193 | return; | |
194 | switch (((*(u32 *)d) >> 9) & 0x03) { | |
195 | case 0x00: | |
196 | printk(KERN_INFO "dmi type 0xB1 record - unknown flag\n"); | |
197 | break; | |
198 | case 0x01: /* set pci=bfsort */ | |
199 | smbios_type_b1_flag = 1; | |
200 | break; | |
201 | case 0x02: /* do not set pci=bfsort */ | |
202 | smbios_type_b1_flag = 2; | |
203 | break; | |
204 | default: | |
205 | break; | |
206 | } | |
207 | } | |
208 | ||
209 | static int __devinit find_sort_method(const struct dmi_system_id *d) | |
210 | { | |
211 | dmi_walk(read_dmi_type_b1, NULL); | |
212 | ||
213 | if (smbios_type_b1_flag == 1) { | |
214 | set_bf_sort(d); | |
215 | return 0; | |
216 | } | |
217 | return -1; | |
218 | } | |
219 | ||
8c4b2cf9 BK |
220 | /* |
221 | * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus) | |
222 | */ | |
223 | #ifdef __i386__ | |
1855256c | 224 | static int __devinit assign_all_busses(const struct dmi_system_id *d) |
8c4b2cf9 BK |
225 | { |
226 | pci_probe |= PCI_ASSIGN_ALL_BUSSES; | |
227 | printk(KERN_INFO "%s detected: enabling PCI bus# renumbering" | |
228 | " (pci=assign-busses)\n", d->ident); | |
229 | return 0; | |
230 | } | |
231 | #endif | |
232 | ||
284f5f9d BH |
233 | static int __devinit set_scan_all(const struct dmi_system_id *d) |
234 | { | |
235 | printk(KERN_INFO "PCI: %s detected, enabling pci=pcie_scan_all\n", | |
236 | d->ident); | |
237 | pci_add_flags(PCI_SCAN_ALL_PCIE_DEVS); | |
238 | return 0; | |
239 | } | |
240 | ||
821508d4 | 241 | static const struct dmi_system_id __devinitconst pciprobe_dmi_table[] = { |
6b4b78fe | 242 | #ifdef __i386__ |
8c4b2cf9 BK |
243 | /* |
244 | * Laptops which need pci=assign-busses to see Cardbus cards | |
245 | */ | |
8c4b2cf9 BK |
246 | { |
247 | .callback = assign_all_busses, | |
248 | .ident = "Samsung X20 Laptop", | |
249 | .matches = { | |
250 | DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"), | |
251 | DMI_MATCH(DMI_PRODUCT_NAME, "SX20S"), | |
252 | }, | |
253 | }, | |
254 | #endif /* __i386__ */ | |
6b4b78fe MD |
255 | { |
256 | .callback = set_bf_sort, | |
257 | .ident = "Dell PowerEdge 1950", | |
258 | .matches = { | |
259 | DMI_MATCH(DMI_SYS_VENDOR, "Dell"), | |
260 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"), | |
261 | }, | |
262 | }, | |
263 | { | |
264 | .callback = set_bf_sort, | |
265 | .ident = "Dell PowerEdge 1955", | |
266 | .matches = { | |
267 | DMI_MATCH(DMI_SYS_VENDOR, "Dell"), | |
268 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1955"), | |
269 | }, | |
270 | }, | |
271 | { | |
272 | .callback = set_bf_sort, | |
273 | .ident = "Dell PowerEdge 2900", | |
274 | .matches = { | |
275 | DMI_MATCH(DMI_SYS_VENDOR, "Dell"), | |
276 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2900"), | |
277 | }, | |
278 | }, | |
279 | { | |
280 | .callback = set_bf_sort, | |
281 | .ident = "Dell PowerEdge 2950", | |
282 | .matches = { | |
283 | DMI_MATCH(DMI_SYS_VENDOR, "Dell"), | |
284 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2950"), | |
285 | }, | |
286 | }, | |
f7a9dae7 MD |
287 | { |
288 | .callback = set_bf_sort, | |
289 | .ident = "Dell PowerEdge R900", | |
290 | .matches = { | |
291 | DMI_MATCH(DMI_SYS_VENDOR, "Dell"), | |
292 | DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R900"), | |
293 | }, | |
294 | }, | |
9b373ed1 ND |
295 | { |
296 | .callback = find_sort_method, | |
297 | .ident = "Dell System", | |
298 | .matches = { | |
299 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"), | |
300 | }, | |
301 | }, | |
f52383d3 AG |
302 | { |
303 | .callback = set_bf_sort, | |
304 | .ident = "HP ProLiant BL20p G3", | |
305 | .matches = { | |
306 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
307 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G3"), | |
308 | }, | |
309 | }, | |
310 | { | |
311 | .callback = set_bf_sort, | |
312 | .ident = "HP ProLiant BL20p G4", | |
313 | .matches = { | |
314 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
315 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G4"), | |
316 | }, | |
317 | }, | |
318 | { | |
319 | .callback = set_bf_sort, | |
320 | .ident = "HP ProLiant BL30p G1", | |
321 | .matches = { | |
322 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
323 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL30p G1"), | |
324 | }, | |
325 | }, | |
326 | { | |
327 | .callback = set_bf_sort, | |
328 | .ident = "HP ProLiant BL25p G1", | |
329 | .matches = { | |
330 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
331 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL25p G1"), | |
332 | }, | |
333 | }, | |
334 | { | |
335 | .callback = set_bf_sort, | |
336 | .ident = "HP ProLiant BL35p G1", | |
337 | .matches = { | |
338 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
339 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL35p G1"), | |
340 | }, | |
341 | }, | |
342 | { | |
343 | .callback = set_bf_sort, | |
344 | .ident = "HP ProLiant BL45p G1", | |
345 | .matches = { | |
346 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
347 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G1"), | |
348 | }, | |
349 | }, | |
350 | { | |
351 | .callback = set_bf_sort, | |
352 | .ident = "HP ProLiant BL45p G2", | |
353 | .matches = { | |
354 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
355 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G2"), | |
356 | }, | |
357 | }, | |
358 | { | |
359 | .callback = set_bf_sort, | |
360 | .ident = "HP ProLiant BL460c G1", | |
361 | .matches = { | |
362 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
363 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL460c G1"), | |
364 | }, | |
365 | }, | |
366 | { | |
367 | .callback = set_bf_sort, | |
368 | .ident = "HP ProLiant BL465c G1", | |
369 | .matches = { | |
370 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
371 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL465c G1"), | |
372 | }, | |
373 | }, | |
374 | { | |
375 | .callback = set_bf_sort, | |
376 | .ident = "HP ProLiant BL480c G1", | |
377 | .matches = { | |
378 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
379 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL480c G1"), | |
380 | }, | |
381 | }, | |
382 | { | |
383 | .callback = set_bf_sort, | |
384 | .ident = "HP ProLiant BL685c G1", | |
385 | .matches = { | |
386 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
387 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL685c G1"), | |
388 | }, | |
389 | }, | |
8f8ae1a7 MS |
390 | { |
391 | .callback = set_bf_sort, | |
8d64c781 | 392 | .ident = "HP ProLiant DL360", |
8f8ae1a7 MS |
393 | .matches = { |
394 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
8d64c781 | 395 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL360"), |
8f8ae1a7 MS |
396 | }, |
397 | }, | |
398 | { | |
399 | .callback = set_bf_sort, | |
8d64c781 | 400 | .ident = "HP ProLiant DL380", |
8f8ae1a7 MS |
401 | .matches = { |
402 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
8d64c781 | 403 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL380"), |
8f8ae1a7 MS |
404 | }, |
405 | }, | |
5b1ea82f JL |
406 | #ifdef __i386__ |
407 | { | |
408 | .callback = assign_all_busses, | |
409 | .ident = "Compaq EVO N800c", | |
410 | .matches = { | |
411 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), | |
412 | DMI_MATCH(DMI_PRODUCT_NAME, "EVO N800c"), | |
413 | }, | |
414 | }, | |
415 | #endif | |
c82bc5ad MS |
416 | { |
417 | .callback = set_bf_sort, | |
739db07f | 418 | .ident = "HP ProLiant DL385 G2", |
c82bc5ad MS |
419 | .matches = { |
420 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
739db07f | 421 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"), |
c82bc5ad MS |
422 | }, |
423 | }, | |
424 | { | |
425 | .callback = set_bf_sort, | |
739db07f | 426 | .ident = "HP ProLiant DL585 G2", |
c82bc5ad MS |
427 | .matches = { |
428 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
739db07f | 429 | DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"), |
c82bc5ad MS |
430 | }, |
431 | }, | |
284f5f9d BH |
432 | { |
433 | .callback = set_scan_all, | |
434 | .ident = "Stratus/NEC ftServer", | |
435 | .matches = { | |
436 | DMI_MATCH(DMI_SYS_VENDOR, "ftServer"), | |
437 | }, | |
438 | }, | |
8c4b2cf9 BK |
439 | {} |
440 | }; | |
1da177e4 | 441 | |
0df18ff3 YL |
442 | void __init dmi_check_pciprobe(void) |
443 | { | |
444 | dmi_check_system(pciprobe_dmi_table); | |
445 | } | |
446 | ||
1da177e4 LT |
447 | struct pci_bus * __devinit pcibios_scan_root(int busnum) |
448 | { | |
449 | struct pci_bus *bus = NULL; | |
450 | ||
451 | while ((bus = pci_find_next_bus(bus)) != NULL) { | |
452 | if (bus->number == busnum) { | |
453 | /* Already scanned */ | |
454 | return bus; | |
455 | } | |
456 | } | |
457 | ||
c57ca65a YL |
458 | return pci_scan_bus_on_node(busnum, &pci_root_ops, |
459 | get_mp_bus_to_node(busnum)); | |
1da177e4 | 460 | } |
c57ca65a | 461 | |
44de3395 | 462 | void __init pcibios_set_cache_line_size(void) |
1da177e4 LT |
463 | { |
464 | struct cpuinfo_x86 *c = &boot_cpu_data; | |
465 | ||
1da177e4 | 466 | /* |
76b1a87b DJ |
467 | * Set PCI cacheline size to that of the CPU if the CPU has reported it. |
468 | * (For older CPUs that don't support cpuid, we se it to 32 bytes | |
469 | * It's also good for 386/486s (which actually have 16) | |
1da177e4 LT |
470 | * as quite a few PCI devices do not support smaller values. |
471 | */ | |
76b1a87b DJ |
472 | if (c->x86_clflush_size > 0) { |
473 | pci_dfl_cache_line_size = c->x86_clflush_size >> 2; | |
474 | printk(KERN_DEBUG "PCI: pci_cache_line_size set to %d bytes\n", | |
475 | pci_dfl_cache_line_size << 2); | |
476 | } else { | |
477 | pci_dfl_cache_line_size = 32 >> 2; | |
478 | printk(KERN_DEBUG "PCI: Unknown cacheline size. Setting to 32 bytes\n"); | |
479 | } | |
44de3395 AN |
480 | } |
481 | ||
482 | int __init pcibios_init(void) | |
483 | { | |
484 | if (!raw_pci_ops) { | |
485 | printk(KERN_WARNING "PCI: System does not support PCI\n"); | |
486 | return 0; | |
487 | } | |
1da177e4 | 488 | |
44de3395 | 489 | pcibios_set_cache_line_size(); |
1da177e4 LT |
490 | pcibios_resource_survey(); |
491 | ||
6b4b78fe MD |
492 | if (pci_bf_sort >= pci_force_bf) |
493 | pci_sort_breadthfirst(); | |
1da177e4 LT |
494 | return 0; |
495 | } | |
496 | ||
15fa325b | 497 | char * __init pcibios_setup(char *str) |
1da177e4 LT |
498 | { |
499 | if (!strcmp(str, "off")) { | |
500 | pci_probe = 0; | |
501 | return NULL; | |
6b4b78fe MD |
502 | } else if (!strcmp(str, "bfsort")) { |
503 | pci_bf_sort = pci_force_bf; | |
504 | return NULL; | |
505 | } else if (!strcmp(str, "nobfsort")) { | |
506 | pci_bf_sort = pci_force_nobf; | |
507 | return NULL; | |
1da177e4 LT |
508 | } |
509 | #ifdef CONFIG_PCI_BIOS | |
510 | else if (!strcmp(str, "bios")) { | |
511 | pci_probe = PCI_PROBE_BIOS; | |
512 | return NULL; | |
513 | } else if (!strcmp(str, "nobios")) { | |
514 | pci_probe &= ~PCI_PROBE_BIOS; | |
515 | return NULL; | |
1da177e4 LT |
516 | } else if (!strcmp(str, "biosirq")) { |
517 | pci_probe |= PCI_BIOS_IRQ_SCAN; | |
518 | return NULL; | |
120bb424 | 519 | } else if (!strncmp(str, "pirqaddr=", 9)) { |
520 | pirq_table_addr = simple_strtoul(str+9, NULL, 0); | |
521 | return NULL; | |
1da177e4 LT |
522 | } |
523 | #endif | |
524 | #ifdef CONFIG_PCI_DIRECT | |
525 | else if (!strcmp(str, "conf1")) { | |
526 | pci_probe = PCI_PROBE_CONF1 | PCI_NO_CHECKS; | |
527 | return NULL; | |
528 | } | |
529 | else if (!strcmp(str, "conf2")) { | |
530 | pci_probe = PCI_PROBE_CONF2 | PCI_NO_CHECKS; | |
531 | return NULL; | |
532 | } | |
533 | #endif | |
534 | #ifdef CONFIG_PCI_MMCONFIG | |
535 | else if (!strcmp(str, "nommconf")) { | |
536 | pci_probe &= ~PCI_PROBE_MMCONF; | |
537 | return NULL; | |
538 | } | |
5f0b2976 YL |
539 | else if (!strcmp(str, "check_enable_amd_mmconf")) { |
540 | pci_probe |= PCI_CHECK_ENABLE_AMD_MMCONF; | |
541 | return NULL; | |
542 | } | |
1da177e4 LT |
543 | #endif |
544 | else if (!strcmp(str, "noacpi")) { | |
545 | acpi_noirq_set(); | |
546 | return NULL; | |
547 | } | |
0637a70a AK |
548 | else if (!strcmp(str, "noearly")) { |
549 | pci_probe |= PCI_PROBE_NOEARLY; | |
550 | return NULL; | |
551 | } | |
1da177e4 LT |
552 | #ifndef CONFIG_X86_VISWS |
553 | else if (!strcmp(str, "usepirqmask")) { | |
554 | pci_probe |= PCI_USE_PIRQ_MASK; | |
555 | return NULL; | |
556 | } else if (!strncmp(str, "irqmask=", 8)) { | |
557 | pcibios_irq_mask = simple_strtol(str+8, NULL, 0); | |
558 | return NULL; | |
559 | } else if (!strncmp(str, "lastbus=", 8)) { | |
560 | pcibios_last_bus = simple_strtol(str+8, NULL, 0); | |
561 | return NULL; | |
562 | } | |
563 | #endif | |
564 | else if (!strcmp(str, "rom")) { | |
565 | pci_probe |= PCI_ASSIGN_ROMS; | |
566 | return NULL; | |
bb71ad88 GH |
567 | } else if (!strcmp(str, "norom")) { |
568 | pci_probe |= PCI_NOASSIGN_ROMS; | |
569 | return NULL; | |
7bd1c365 MH |
570 | } else if (!strcmp(str, "nobar")) { |
571 | pci_probe |= PCI_NOASSIGN_BARS; | |
572 | return NULL; | |
1da177e4 LT |
573 | } else if (!strcmp(str, "assign-busses")) { |
574 | pci_probe |= PCI_ASSIGN_ALL_BUSSES; | |
575 | return NULL; | |
236e946b LT |
576 | } else if (!strcmp(str, "use_crs")) { |
577 | pci_probe |= PCI_USE__CRS; | |
62f420f8 | 578 | return NULL; |
7bc5e3f2 BH |
579 | } else if (!strcmp(str, "nocrs")) { |
580 | pci_probe |= PCI_ROOT_NO_CRS; | |
581 | return NULL; | |
e3f2baeb YL |
582 | } else if (!strcmp(str, "earlydump")) { |
583 | pci_early_dump_regs = 1; | |
584 | return NULL; | |
1da177e4 LT |
585 | } else if (!strcmp(str, "routeirq")) { |
586 | pci_routeirq = 1; | |
587 | return NULL; | |
13a6ddb0 YL |
588 | } else if (!strcmp(str, "skip_isa_align")) { |
589 | pci_probe |= PCI_CAN_SKIP_ISA_ALIGN; | |
590 | return NULL; | |
a9322f64 SA |
591 | } else if (!strcmp(str, "noioapicquirk")) { |
592 | noioapicquirk = 1; | |
593 | return NULL; | |
9197979b SA |
594 | } else if (!strcmp(str, "ioapicreroute")) { |
595 | if (noioapicreroute != -1) | |
596 | noioapicreroute = 0; | |
597 | return NULL; | |
41b9eb26 SA |
598 | } else if (!strcmp(str, "noioapicreroute")) { |
599 | if (noioapicreroute != -1) | |
600 | noioapicreroute = 1; | |
601 | return NULL; | |
1da177e4 LT |
602 | } |
603 | return str; | |
604 | } | |
605 | ||
606 | unsigned int pcibios_assign_all_busses(void) | |
607 | { | |
608 | return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0; | |
609 | } | |
610 | ||
611 | int pcibios_enable_device(struct pci_dev *dev, int mask) | |
612 | { | |
613 | int err; | |
614 | ||
b81d988c | 615 | if ((err = pci_enable_resources(dev, mask)) < 0) |
1da177e4 LT |
616 | return err; |
617 | ||
16cf0ebc | 618 | if (!pci_dev_msi_enabled(dev)) |
bba6f6fc EB |
619 | return pcibios_enable_irq(dev); |
620 | return 0; | |
1da177e4 | 621 | } |
87bec66b DSL |
622 | |
623 | void pcibios_disable_device (struct pci_dev *dev) | |
624 | { | |
16cf0ebc | 625 | if (!pci_dev_msi_enabled(dev) && pcibios_disable_irq) |
87bec66b DSL |
626 | pcibios_disable_irq(dev); |
627 | } | |
73c59afc | 628 | |
0ef5f8f6 AP |
629 | int pci_ext_cfg_avail(struct pci_dev *dev) |
630 | { | |
631 | if (raw_pci_ext_ops) | |
632 | return 1; | |
633 | else | |
634 | return 0; | |
635 | } | |
636 | ||
98db6f19 | 637 | struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node) |
73c59afc | 638 | { |
2cd6975a | 639 | LIST_HEAD(resources); |
73c59afc MBY |
640 | struct pci_bus *bus = NULL; |
641 | struct pci_sysdata *sd; | |
642 | ||
643 | /* | |
644 | * Allocate per-root-bus (not per bus) arch-specific data. | |
645 | * TODO: leak; this memory is never freed. | |
646 | * It's arguable whether it's worth the trouble to care. | |
647 | */ | |
648 | sd = kzalloc(sizeof(*sd), GFP_KERNEL); | |
649 | if (!sd) { | |
650 | printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busno); | |
651 | return NULL; | |
652 | } | |
871d5f8d | 653 | sd->node = node; |
2cd6975a | 654 | x86_pci_root_bus_resources(busno, &resources); |
c57ca65a | 655 | printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busno); |
2cd6975a BH |
656 | bus = pci_scan_root_bus(NULL, busno, ops, sd, &resources); |
657 | if (!bus) { | |
658 | pci_free_resource_list(&resources); | |
73c59afc | 659 | kfree(sd); |
2cd6975a | 660 | } |
73c59afc MBY |
661 | |
662 | return bus; | |
663 | } | |
871d5f8d | 664 | |
98db6f19 | 665 | struct pci_bus * __devinit pci_scan_bus_with_sysdata(int busno) |
871d5f8d YL |
666 | { |
667 | return pci_scan_bus_on_node(busno, &pci_root_ops, -1); | |
668 | } | |
2547089c JB |
669 | |
670 | /* | |
671 | * NUMA info for PCI busses | |
672 | * | |
673 | * Early arch code is responsible for filling in reasonable values here. | |
674 | * A node id of "-1" means "use current node". In other words, if a bus | |
675 | * has a -1 node id, it's not tightly coupled to any particular chunk | |
676 | * of memory (as is the case on some Nehalem systems). | |
677 | */ | |
678 | #ifdef CONFIG_NUMA | |
679 | ||
680 | #define BUS_NR 256 | |
681 | ||
682 | #ifdef CONFIG_X86_64 | |
683 | ||
684 | static int mp_bus_to_node[BUS_NR] = { | |
685 | [0 ... BUS_NR - 1] = -1 | |
686 | }; | |
687 | ||
688 | void set_mp_bus_to_node(int busnum, int node) | |
689 | { | |
690 | if (busnum >= 0 && busnum < BUS_NR) | |
691 | mp_bus_to_node[busnum] = node; | |
692 | } | |
693 | ||
694 | int get_mp_bus_to_node(int busnum) | |
695 | { | |
696 | int node = -1; | |
697 | ||
698 | if (busnum < 0 || busnum > (BUS_NR - 1)) | |
699 | return node; | |
700 | ||
701 | node = mp_bus_to_node[busnum]; | |
702 | ||
703 | /* | |
704 | * let numa_node_id to decide it later in dma_alloc_pages | |
705 | * if there is no ram on that node | |
706 | */ | |
707 | if (node != -1 && !node_online(node)) | |
708 | node = -1; | |
709 | ||
710 | return node; | |
711 | } | |
712 | ||
713 | #else /* CONFIG_X86_32 */ | |
714 | ||
76baeebf | 715 | static int mp_bus_to_node[BUS_NR] = { |
2547089c JB |
716 | [0 ... BUS_NR - 1] = -1 |
717 | }; | |
718 | ||
719 | void set_mp_bus_to_node(int busnum, int node) | |
720 | { | |
721 | if (busnum >= 0 && busnum < BUS_NR) | |
722 | mp_bus_to_node[busnum] = (unsigned char) node; | |
723 | } | |
724 | ||
725 | int get_mp_bus_to_node(int busnum) | |
726 | { | |
727 | int node; | |
728 | ||
729 | if (busnum < 0 || busnum > (BUS_NR - 1)) | |
730 | return 0; | |
731 | node = mp_bus_to_node[busnum]; | |
732 | return node; | |
733 | } | |
734 | ||
735 | #endif /* CONFIG_X86_32 */ | |
736 | ||
737 | #endif /* CONFIG_NUMA */ |