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1da177e4 LT |
1 | /* |
2 | * acpi.c - Architecture-Specific Low-Level ACPI Support | |
3 | * | |
4 | * Copyright (C) 1999 VA Linux Systems | |
5 | * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com> | |
6 | * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co. | |
7 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
8 | * Copyright (C) 2000 Intel Corp. | |
9 | * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com> | |
10 | * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
11 | * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com> | |
12 | * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com> | |
13 | * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de> | |
55e59c51 | 14 | * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com> |
1da177e4 LT |
15 | * |
16 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2 of the License, or | |
21 | * (at your option) any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
31 | * | |
32 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
33 | */ | |
34 | ||
35 | #include <linux/config.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/sched.h> | |
40 | #include <linux/smp.h> | |
41 | #include <linux/string.h> | |
42 | #include <linux/types.h> | |
43 | #include <linux/irq.h> | |
44 | #include <linux/acpi.h> | |
45 | #include <linux/efi.h> | |
46 | #include <linux/mmzone.h> | |
47 | #include <linux/nodemask.h> | |
48 | #include <asm/io.h> | |
49 | #include <asm/iosapic.h> | |
50 | #include <asm/machvec.h> | |
51 | #include <asm/page.h> | |
52 | #include <asm/system.h> | |
53 | #include <asm/numa.h> | |
54 | #include <asm/sal.h> | |
55 | #include <asm/cyclone.h> | |
56 | ||
57 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
58 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
59 | ((acpi_table_entry_header *)entry)->length != sizeof(*entry)) | |
60 | ||
61 | #define PREFIX "ACPI: " | |
62 | ||
63 | void (*pm_idle) (void); | |
64 | EXPORT_SYMBOL(pm_idle); | |
65 | void (*pm_power_off) (void); | |
66 | EXPORT_SYMBOL(pm_power_off); | |
67 | ||
68 | unsigned char acpi_kbd_controller_present = 1; | |
69 | unsigned char acpi_legacy_devices; | |
70 | ||
55e59c51 AR |
71 | static unsigned int __initdata acpi_madt_rev; |
72 | ||
73 | unsigned int acpi_cpei_override; | |
74 | unsigned int acpi_cpei_phys_cpuid; | |
75 | ||
1da177e4 LT |
76 | #define MAX_SAPICS 256 |
77 | u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = | |
78 | { [0 ... MAX_SAPICS - 1] = -1 }; | |
79 | EXPORT_SYMBOL(ia64_acpiid_to_sapicid); | |
80 | ||
81 | const char * | |
82 | acpi_get_sysname (void) | |
83 | { | |
84 | #ifdef CONFIG_IA64_GENERIC | |
85 | unsigned long rsdp_phys; | |
86 | struct acpi20_table_rsdp *rsdp; | |
87 | struct acpi_table_xsdt *xsdt; | |
88 | struct acpi_table_header *hdr; | |
89 | ||
90 | rsdp_phys = acpi_find_rsdp(); | |
91 | if (!rsdp_phys) { | |
92 | printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
93 | return "dig"; | |
94 | } | |
95 | ||
96 | rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys); | |
97 | if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) { | |
98 | printk(KERN_ERR "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
99 | return "dig"; | |
100 | } | |
101 | ||
102 | xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address); | |
103 | hdr = &xsdt->header; | |
104 | if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) { | |
105 | printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
106 | return "dig"; | |
107 | } | |
108 | ||
109 | if (!strcmp(hdr->oem_id, "HP")) { | |
110 | return "hpzx1"; | |
111 | } | |
112 | else if (!strcmp(hdr->oem_id, "SGI")) { | |
113 | return "sn2"; | |
114 | } | |
115 | ||
116 | return "dig"; | |
117 | #else | |
118 | # if defined (CONFIG_IA64_HP_SIM) | |
119 | return "hpsim"; | |
120 | # elif defined (CONFIG_IA64_HP_ZX1) | |
121 | return "hpzx1"; | |
122 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
123 | return "hpzx1_swiotlb"; | |
124 | # elif defined (CONFIG_IA64_SGI_SN2) | |
125 | return "sn2"; | |
126 | # elif defined (CONFIG_IA64_DIG) | |
127 | return "dig"; | |
128 | # else | |
129 | # error Unknown platform. Fix acpi.c. | |
130 | # endif | |
131 | #endif | |
132 | } | |
133 | ||
134 | #ifdef CONFIG_ACPI_BOOT | |
135 | ||
136 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
137 | ||
138 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
139 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
140 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
141 | }; | |
142 | ||
143 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
144 | ||
145 | /* | |
146 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
147 | * a generic platform event. Currently only CPEI is implemented. | |
148 | */ | |
149 | int | |
150 | acpi_request_vector (u32 int_type) | |
151 | { | |
152 | int vector = -1; | |
153 | ||
154 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
155 | /* corrected platform error interrupt */ | |
156 | vector = platform_intr_list[int_type]; | |
157 | } else | |
158 | printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n"); | |
159 | return vector; | |
160 | } | |
161 | ||
162 | char * | |
163 | __acpi_map_table (unsigned long phys_addr, unsigned long size) | |
164 | { | |
165 | return __va(phys_addr); | |
166 | } | |
167 | ||
168 | /* -------------------------------------------------------------------------- | |
169 | Boot-time Table Parsing | |
170 | -------------------------------------------------------------------------- */ | |
171 | ||
172 | static int total_cpus __initdata; | |
173 | static int available_cpus __initdata; | |
174 | struct acpi_table_madt * acpi_madt __initdata; | |
175 | static u8 has_8259; | |
176 | ||
177 | ||
178 | static int __init | |
179 | acpi_parse_lapic_addr_ovr ( | |
180 | acpi_table_entry_header *header, const unsigned long end) | |
181 | { | |
182 | struct acpi_table_lapic_addr_ovr *lapic; | |
183 | ||
184 | lapic = (struct acpi_table_lapic_addr_ovr *) header; | |
185 | ||
186 | if (BAD_MADT_ENTRY(lapic, end)) | |
187 | return -EINVAL; | |
188 | ||
189 | if (lapic->address) { | |
190 | iounmap(ipi_base_addr); | |
191 | ipi_base_addr = ioremap(lapic->address, 0); | |
192 | } | |
193 | return 0; | |
194 | } | |
195 | ||
196 | ||
197 | static int __init | |
198 | acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end) | |
199 | { | |
200 | struct acpi_table_lsapic *lsapic; | |
201 | ||
202 | lsapic = (struct acpi_table_lsapic *) header; | |
203 | ||
204 | if (BAD_MADT_ENTRY(lsapic, end)) | |
205 | return -EINVAL; | |
206 | ||
207 | if (lsapic->flags.enabled) { | |
208 | #ifdef CONFIG_SMP | |
209 | smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid; | |
210 | #endif | |
211 | ia64_acpiid_to_sapicid[lsapic->acpi_id] = (lsapic->id << 8) | lsapic->eid; | |
212 | ++available_cpus; | |
213 | } | |
214 | ||
215 | total_cpus++; | |
216 | return 0; | |
217 | } | |
218 | ||
219 | ||
220 | static int __init | |
221 | acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end) | |
222 | { | |
223 | struct acpi_table_lapic_nmi *lacpi_nmi; | |
224 | ||
225 | lacpi_nmi = (struct acpi_table_lapic_nmi*) header; | |
226 | ||
227 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
228 | return -EINVAL; | |
229 | ||
230 | /* TBD: Support lapic_nmi entries */ | |
231 | return 0; | |
232 | } | |
233 | ||
234 | ||
235 | static int __init | |
236 | acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end) | |
237 | { | |
238 | struct acpi_table_iosapic *iosapic; | |
239 | ||
240 | iosapic = (struct acpi_table_iosapic *) header; | |
241 | ||
242 | if (BAD_MADT_ENTRY(iosapic, end)) | |
243 | return -EINVAL; | |
244 | ||
0e888adc | 245 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
246 | } |
247 | ||
248 | ||
249 | static int __init | |
250 | acpi_parse_plat_int_src ( | |
251 | acpi_table_entry_header *header, const unsigned long end) | |
252 | { | |
253 | struct acpi_table_plat_int_src *plintsrc; | |
254 | int vector; | |
255 | ||
256 | plintsrc = (struct acpi_table_plat_int_src *) header; | |
257 | ||
258 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
259 | return -EINVAL; | |
260 | ||
261 | /* | |
262 | * Get vector assignment for this interrupt, set attributes, | |
263 | * and program the IOSAPIC routing table. | |
264 | */ | |
265 | vector = iosapic_register_platform_intr(plintsrc->type, | |
266 | plintsrc->global_irq, | |
267 | plintsrc->iosapic_vector, | |
268 | plintsrc->eid, | |
269 | plintsrc->id, | |
270 | (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
271 | (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
272 | ||
273 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 AR |
274 | if (acpi_madt_rev > 1) { |
275 | acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag; | |
276 | } | |
277 | ||
278 | /* | |
279 | * Save the physical id, so we can check when its being removed | |
280 | */ | |
281 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
282 | ||
1da177e4 LT |
283 | return 0; |
284 | } | |
285 | ||
286 | ||
55e59c51 AR |
287 | unsigned int can_cpei_retarget(void) |
288 | { | |
289 | extern int cpe_vector; | |
290 | ||
291 | /* | |
292 | * Only if CPEI is supported and the override flag | |
293 | * is present, otherwise return that its re-targettable | |
294 | * if we are in polling mode. | |
295 | */ | |
296 | if (cpe_vector > 0 && !acpi_cpei_override) | |
297 | return 0; | |
298 | else | |
299 | return 1; | |
300 | } | |
301 | ||
302 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
303 | { | |
304 | unsigned int logical_id; | |
305 | ||
306 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
307 | ||
308 | if (logical_id == cpu) | |
309 | return 1; | |
310 | else | |
311 | return 0; | |
312 | } | |
313 | ||
314 | void set_cpei_target_cpu(unsigned int cpu) | |
315 | { | |
316 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
317 | } | |
318 | ||
319 | unsigned int get_cpei_target_cpu(void) | |
320 | { | |
321 | return acpi_cpei_phys_cpuid; | |
322 | } | |
323 | ||
1da177e4 LT |
324 | static int __init |
325 | acpi_parse_int_src_ovr ( | |
326 | acpi_table_entry_header *header, const unsigned long end) | |
327 | { | |
328 | struct acpi_table_int_src_ovr *p; | |
329 | ||
330 | p = (struct acpi_table_int_src_ovr *) header; | |
331 | ||
332 | if (BAD_MADT_ENTRY(p, end)) | |
333 | return -EINVAL; | |
334 | ||
335 | iosapic_override_isa_irq(p->bus_irq, p->global_irq, | |
336 | (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
337 | (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
338 | return 0; | |
339 | } | |
340 | ||
341 | ||
342 | static int __init | |
343 | acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end) | |
344 | { | |
345 | struct acpi_table_nmi_src *nmi_src; | |
346 | ||
347 | nmi_src = (struct acpi_table_nmi_src*) header; | |
348 | ||
349 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
350 | return -EINVAL; | |
351 | ||
352 | /* TBD: Support nimsrc entries */ | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static void __init | |
357 | acpi_madt_oem_check (char *oem_id, char *oem_table_id) | |
358 | { | |
359 | if (!strncmp(oem_id, "IBM", 3) && | |
360 | (!strncmp(oem_table_id, "SERMOW", 6))) { | |
361 | ||
362 | /* | |
363 | * Unfortunately ITC_DRIFT is not yet part of the | |
364 | * official SAL spec, so the ITC_DRIFT bit is not | |
365 | * set by the BIOS on this hardware. | |
366 | */ | |
367 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
368 | ||
369 | cyclone_setup(); | |
370 | } | |
371 | } | |
372 | ||
373 | static int __init | |
374 | acpi_parse_madt (unsigned long phys_addr, unsigned long size) | |
375 | { | |
376 | if (!phys_addr || !size) | |
377 | return -EINVAL; | |
378 | ||
379 | acpi_madt = (struct acpi_table_madt *) __va(phys_addr); | |
380 | ||
55e59c51 AR |
381 | acpi_madt_rev = acpi_madt->header.revision; |
382 | ||
1da177e4 LT |
383 | /* remember the value for reference after free_initmem() */ |
384 | #ifdef CONFIG_ITANIUM | |
385 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ | |
386 | #else | |
387 | has_8259 = acpi_madt->flags.pcat_compat; | |
388 | #endif | |
389 | iosapic_system_init(has_8259); | |
390 | ||
391 | /* Get base address of IPI Message Block */ | |
392 | ||
393 | if (acpi_madt->lapic_address) | |
394 | ipi_base_addr = ioremap(acpi_madt->lapic_address, 0); | |
395 | ||
396 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
397 | ||
398 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
399 | acpi_madt->header.oem_table_id); | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | ||
405 | #ifdef CONFIG_ACPI_NUMA | |
406 | ||
407 | #undef SLIT_DEBUG | |
408 | ||
409 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
410 | ||
411 | static int __initdata srat_num_cpus; /* number of cpus */ | |
412 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; | |
413 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
414 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
415 | /* maps to convert between proximity domain and logical node ID */ | |
416 | int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS]; | |
417 | int __initdata nid_to_pxm_map[MAX_NUMNODES]; | |
418 | static struct acpi_table_slit __initdata *slit_table; | |
419 | ||
420 | /* | |
421 | * ACPI 2.0 SLIT (System Locality Information Table) | |
422 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
423 | */ | |
424 | void __init | |
425 | acpi_numa_slit_init (struct acpi_table_slit *slit) | |
426 | { | |
427 | u32 len; | |
428 | ||
429 | len = sizeof(struct acpi_table_header) + 8 | |
430 | + slit->localities * slit->localities; | |
431 | if (slit->header.length != len) { | |
432 | printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
433 | len, slit->header.length); | |
434 | memset(numa_slit, 10, sizeof(numa_slit)); | |
435 | return; | |
436 | } | |
437 | slit_table = slit; | |
438 | } | |
439 | ||
440 | void __init | |
441 | acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa) | |
442 | { | |
443 | /* record this node in proximity bitmap */ | |
444 | pxm_bit_set(pa->proximity_domain); | |
445 | ||
446 | node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid); | |
447 | /* nid should be overridden as logical node id later */ | |
448 | node_cpuid[srat_num_cpus].nid = pa->proximity_domain; | |
449 | srat_num_cpus++; | |
450 | } | |
451 | ||
452 | void __init | |
453 | acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma) | |
454 | { | |
455 | unsigned long paddr, size; | |
456 | u8 pxm; | |
457 | struct node_memblk_s *p, *q, *pend; | |
458 | ||
459 | pxm = ma->proximity_domain; | |
460 | ||
461 | /* fill node memory chunk structure */ | |
462 | paddr = ma->base_addr_hi; | |
463 | paddr = (paddr << 32) | ma->base_addr_lo; | |
464 | size = ma->length_hi; | |
465 | size = (size << 32) | ma->length_lo; | |
466 | ||
467 | /* Ignore disabled entries */ | |
468 | if (!ma->flags.enabled) | |
469 | return; | |
470 | ||
471 | /* record this node in proximity bitmap */ | |
472 | pxm_bit_set(pxm); | |
473 | ||
474 | /* Insertion sort based on base address */ | |
475 | pend = &node_memblk[num_node_memblks]; | |
476 | for (p = &node_memblk[0]; p < pend; p++) { | |
477 | if (paddr < p->start_paddr) | |
478 | break; | |
479 | } | |
480 | if (p < pend) { | |
481 | for (q = pend - 1; q >= p; q--) | |
482 | *(q + 1) = *q; | |
483 | } | |
484 | p->start_paddr = paddr; | |
485 | p->size = size; | |
486 | p->nid = pxm; | |
487 | num_node_memblks++; | |
488 | } | |
489 | ||
490 | void __init | |
491 | acpi_numa_arch_fixup (void) | |
492 | { | |
493 | int i, j, node_from, node_to; | |
494 | ||
495 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
496 | if (srat_num_cpus == 0) { | |
497 | node_set_online(0); | |
498 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
499 | return; | |
500 | } | |
501 | ||
502 | /* | |
503 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
504 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
505 | */ | |
506 | /* calculate total number of nodes in system from PXM bitmap */ | |
507 | memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map)); | |
508 | memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map)); | |
509 | nodes_clear(node_online_map); | |
510 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
511 | if (pxm_bit_test(i)) { | |
512 | int nid = num_online_nodes(); | |
513 | pxm_to_nid_map[i] = nid; | |
514 | nid_to_pxm_map[nid] = i; | |
515 | node_set_online(nid); | |
516 | } | |
517 | } | |
518 | ||
519 | /* set logical node id in memory chunk structure */ | |
520 | for (i = 0; i < num_node_memblks; i++) | |
521 | node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid]; | |
522 | ||
523 | /* assign memory bank numbers for each chunk on each node */ | |
524 | for_each_online_node(i) { | |
525 | int bank; | |
526 | ||
527 | bank = 0; | |
528 | for (j = 0; j < num_node_memblks; j++) | |
529 | if (node_memblk[j].nid == i) | |
530 | node_memblk[j].bank = bank++; | |
531 | } | |
532 | ||
533 | /* set logical node id in cpu structure */ | |
534 | for (i = 0; i < srat_num_cpus; i++) | |
535 | node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid]; | |
536 | ||
537 | printk(KERN_INFO "Number of logical nodes in system = %d\n", num_online_nodes()); | |
538 | printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks); | |
539 | ||
540 | if (!slit_table) return; | |
541 | memset(numa_slit, -1, sizeof(numa_slit)); | |
542 | for (i=0; i<slit_table->localities; i++) { | |
543 | if (!pxm_bit_test(i)) | |
544 | continue; | |
545 | node_from = pxm_to_nid_map[i]; | |
546 | for (j=0; j<slit_table->localities; j++) { | |
547 | if (!pxm_bit_test(j)) | |
548 | continue; | |
549 | node_to = pxm_to_nid_map[j]; | |
550 | node_distance(node_from, node_to) = | |
551 | slit_table->entry[i*slit_table->localities + j]; | |
552 | } | |
553 | } | |
554 | ||
555 | #ifdef SLIT_DEBUG | |
556 | printk("ACPI 2.0 SLIT locality table:\n"); | |
557 | for_each_online_node(i) { | |
558 | for_each_online_node(j) | |
559 | printk("%03d ", node_distance(i,j)); | |
560 | printk("\n"); | |
561 | } | |
562 | #endif | |
563 | } | |
564 | #endif /* CONFIG_ACPI_NUMA */ | |
565 | ||
566 | unsigned int | |
567 | acpi_register_gsi (u32 gsi, int edge_level, int active_high_low) | |
568 | { | |
569 | if (has_8259 && gsi < 16) | |
570 | return isa_irq_to_vector(gsi); | |
571 | ||
572 | return iosapic_register_intr(gsi, | |
573 | (active_high_low == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
574 | (edge_level == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
575 | } | |
576 | EXPORT_SYMBOL(acpi_register_gsi); | |
577 | ||
578 | #ifdef CONFIG_ACPI_DEALLOCATE_IRQ | |
579 | void | |
580 | acpi_unregister_gsi (u32 gsi) | |
581 | { | |
582 | iosapic_unregister_intr(gsi); | |
583 | } | |
584 | EXPORT_SYMBOL(acpi_unregister_gsi); | |
585 | #endif /* CONFIG_ACPI_DEALLOCATE_IRQ */ | |
586 | ||
587 | static int __init | |
588 | acpi_parse_fadt (unsigned long phys_addr, unsigned long size) | |
589 | { | |
590 | struct acpi_table_header *fadt_header; | |
591 | struct fadt_descriptor_rev2 *fadt; | |
592 | ||
593 | if (!phys_addr || !size) | |
594 | return -EINVAL; | |
595 | ||
596 | fadt_header = (struct acpi_table_header *) __va(phys_addr); | |
597 | if (fadt_header->revision != 3) | |
598 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ | |
599 | ||
600 | fadt = (struct fadt_descriptor_rev2 *) fadt_header; | |
601 | ||
602 | if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER)) | |
603 | acpi_kbd_controller_present = 0; | |
604 | ||
605 | if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES) | |
606 | acpi_legacy_devices = 1; | |
607 | ||
608 | acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); | |
609 | return 0; | |
610 | } | |
611 | ||
612 | ||
613 | unsigned long __init | |
614 | acpi_find_rsdp (void) | |
615 | { | |
616 | unsigned long rsdp_phys = 0; | |
617 | ||
618 | if (efi.acpi20) | |
619 | rsdp_phys = __pa(efi.acpi20); | |
620 | else if (efi.acpi) | |
621 | printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n"); | |
622 | return rsdp_phys; | |
623 | } | |
624 | ||
625 | ||
626 | int __init | |
627 | acpi_boot_init (void) | |
628 | { | |
629 | ||
630 | /* | |
631 | * MADT | |
632 | * ---- | |
633 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
634 | * Note that this table provides platform SMP configuration | |
635 | * information -- the successor to MPS tables. | |
636 | */ | |
637 | ||
638 | if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) { | |
639 | printk(KERN_ERR PREFIX "Can't find MADT\n"); | |
640 | goto skip_madt; | |
641 | } | |
642 | ||
643 | /* Local APIC */ | |
644 | ||
645 | if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0) | |
646 | printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n"); | |
647 | ||
648 | if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) < 1) | |
649 | printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n"); | |
650 | ||
651 | if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) < 0) | |
652 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); | |
653 | ||
654 | /* I/O APIC */ | |
655 | ||
656 | if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) | |
657 | printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n"); | |
658 | ||
659 | /* System-Level Interrupt Routing */ | |
660 | ||
661 | if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, ACPI_MAX_PLATFORM_INTERRUPTS) < 0) | |
662 | printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n"); | |
663 | ||
664 | if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0) | |
665 | printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n"); | |
666 | ||
667 | if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0) | |
668 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
669 | skip_madt: | |
670 | ||
671 | /* | |
672 | * FADT says whether a legacy keyboard controller is present. | |
673 | * The FADT also contains an SCI_INT line, by which the system | |
674 | * gets interrupts such as power and sleep buttons. If it's not | |
675 | * on a Legacy interrupt, it needs to be setup. | |
676 | */ | |
677 | if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1) | |
678 | printk(KERN_ERR PREFIX "Can't find FADT\n"); | |
679 | ||
680 | #ifdef CONFIG_SMP | |
681 | if (available_cpus == 0) { | |
682 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
683 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
684 | smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id(); | |
685 | available_cpus = 1; /* We've got at least one of these, no? */ | |
686 | } | |
687 | smp_boot_data.cpu_count = available_cpus; | |
688 | ||
689 | smp_build_cpu_map(); | |
690 | # ifdef CONFIG_ACPI_NUMA | |
691 | if (srat_num_cpus == 0) { | |
692 | int cpu, i = 1; | |
693 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
694 | if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id()) | |
695 | node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu]; | |
696 | } | |
1da177e4 | 697 | # endif |
8d7e3517 TL |
698 | #endif |
699 | #ifdef CONFIG_ACPI_NUMA | |
700 | build_cpu_to_node_map(); | |
1da177e4 LT |
701 | #endif |
702 | /* Make boot-up look pretty */ | |
703 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus); | |
704 | return 0; | |
705 | } | |
706 | ||
707 | int | |
708 | acpi_gsi_to_irq (u32 gsi, unsigned int *irq) | |
709 | { | |
710 | int vector; | |
711 | ||
712 | if (has_8259 && gsi < 16) | |
713 | *irq = isa_irq_to_vector(gsi); | |
714 | else { | |
715 | vector = gsi_to_vector(gsi); | |
716 | if (vector == -1) | |
717 | return -1; | |
718 | ||
719 | *irq = vector; | |
720 | } | |
721 | return 0; | |
722 | } | |
723 | ||
724 | /* | |
725 | * ACPI based hotplug CPU support | |
726 | */ | |
727 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
728 | static | |
729 | int | |
730 | acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) | |
731 | { | |
732 | #ifdef CONFIG_ACPI_NUMA | |
733 | int pxm_id; | |
734 | ||
735 | pxm_id = acpi_get_pxm(handle); | |
736 | ||
737 | /* | |
738 | * Assuming that the container driver would have set the proximity | |
739 | * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag | |
740 | */ | |
741 | node_cpuid[cpu].nid = (pxm_id < 0) ? 0: | |
742 | pxm_to_nid_map[pxm_id]; | |
743 | ||
744 | node_cpuid[cpu].phys_id = physid; | |
745 | #endif | |
746 | return(0); | |
747 | } | |
748 | ||
749 | ||
750 | int | |
751 | acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
752 | { | |
753 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
754 | union acpi_object *obj; | |
755 | struct acpi_table_lsapic *lsapic; | |
756 | cpumask_t tmp_map; | |
757 | long physid; | |
758 | int cpu; | |
759 | ||
760 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
761 | return -EINVAL; | |
762 | ||
763 | if (!buffer.length || !buffer.pointer) | |
764 | return -EINVAL; | |
765 | ||
766 | obj = buffer.pointer; | |
767 | if (obj->type != ACPI_TYPE_BUFFER || | |
768 | obj->buffer.length < sizeof(*lsapic)) { | |
769 | acpi_os_free(buffer.pointer); | |
770 | return -EINVAL; | |
771 | } | |
772 | ||
773 | lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer; | |
774 | ||
775 | if ((lsapic->header.type != ACPI_MADT_LSAPIC) || | |
776 | (!lsapic->flags.enabled)) { | |
777 | acpi_os_free(buffer.pointer); | |
778 | return -EINVAL; | |
779 | } | |
780 | ||
781 | physid = ((lsapic->id <<8) | (lsapic->eid)); | |
782 | ||
783 | acpi_os_free(buffer.pointer); | |
784 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
785 | buffer.pointer = NULL; | |
786 | ||
787 | cpus_complement(tmp_map, cpu_present_map); | |
788 | cpu = first_cpu(tmp_map); | |
789 | if(cpu >= NR_CPUS) | |
790 | return -EINVAL; | |
791 | ||
792 | acpi_map_cpu2node(handle, cpu, physid); | |
793 | ||
794 | cpu_set(cpu, cpu_present_map); | |
795 | ia64_cpu_to_sapicid[cpu] = physid; | |
796 | ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu]; | |
797 | ||
798 | *pcpu = cpu; | |
799 | return(0); | |
800 | } | |
801 | EXPORT_SYMBOL(acpi_map_lsapic); | |
802 | ||
803 | ||
804 | int | |
805 | acpi_unmap_lsapic(int cpu) | |
806 | { | |
807 | int i; | |
808 | ||
809 | for (i=0; i<MAX_SAPICS; i++) { | |
810 | if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) { | |
811 | ia64_acpiid_to_sapicid[i] = -1; | |
812 | break; | |
813 | } | |
814 | } | |
815 | ia64_cpu_to_sapicid[cpu] = -1; | |
816 | cpu_clear(cpu,cpu_present_map); | |
817 | ||
818 | #ifdef CONFIG_ACPI_NUMA | |
819 | /* NUMA specific cleanup's */ | |
820 | #endif | |
821 | ||
822 | return(0); | |
823 | } | |
824 | EXPORT_SYMBOL(acpi_unmap_lsapic); | |
825 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ | |
826 | ||
827 | ||
828 | #ifdef CONFIG_ACPI_NUMA | |
0e888adc | 829 | acpi_status __devinit |
1da177e4 LT |
830 | acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret) |
831 | { | |
832 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
833 | union acpi_object *obj; | |
834 | struct acpi_table_iosapic *iosapic; | |
835 | unsigned int gsi_base; | |
bb0fc085 | 836 | int pxm, node; |
1da177e4 LT |
837 | |
838 | /* Only care about objects w/ a method that returns the MADT */ | |
839 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
840 | return AE_OK; | |
841 | ||
842 | if (!buffer.length || !buffer.pointer) | |
843 | return AE_OK; | |
844 | ||
845 | obj = buffer.pointer; | |
846 | if (obj->type != ACPI_TYPE_BUFFER || | |
847 | obj->buffer.length < sizeof(*iosapic)) { | |
848 | acpi_os_free(buffer.pointer); | |
849 | return AE_OK; | |
850 | } | |
851 | ||
852 | iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer; | |
853 | ||
854 | if (iosapic->header.type != ACPI_MADT_IOSAPIC) { | |
855 | acpi_os_free(buffer.pointer); | |
856 | return AE_OK; | |
857 | } | |
858 | ||
859 | gsi_base = iosapic->global_irq_base; | |
860 | ||
861 | acpi_os_free(buffer.pointer); | |
1da177e4 LT |
862 | |
863 | /* | |
bb0fc085 | 864 | * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell |
1da177e4 LT |
865 | * us which node to associate this with. |
866 | */ | |
bb0fc085 AW |
867 | pxm = acpi_get_pxm(handle); |
868 | if (pxm < 0) | |
1da177e4 | 869 | return AE_OK; |
1da177e4 | 870 | |
bb0fc085 | 871 | node = pxm_to_nid_map[pxm]; |
1da177e4 LT |
872 | |
873 | if (node >= MAX_NUMNODES || !node_online(node) || | |
874 | cpus_empty(node_to_cpumask(node))) | |
875 | return AE_OK; | |
876 | ||
877 | /* We know a gsi to node mapping! */ | |
878 | map_iosapic_to_node(gsi_base, node); | |
879 | return AE_OK; | |
880 | } | |
881 | #endif /* CONFIG_NUMA */ | |
b1bb248a KK |
882 | |
883 | int | |
884 | acpi_register_ioapic (acpi_handle handle, u64 phys_addr, u32 gsi_base) | |
885 | { | |
0e888adc KK |
886 | int err; |
887 | ||
888 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
889 | return err; | |
890 | ||
891 | #if CONFIG_ACPI_NUMA | |
892 | acpi_map_iosapic(handle, 0, NULL, NULL); | |
893 | #endif /* CONFIG_ACPI_NUMA */ | |
894 | ||
895 | return 0; | |
b1bb248a KK |
896 | } |
897 | EXPORT_SYMBOL(acpi_register_ioapic); | |
898 | ||
899 | int | |
900 | acpi_unregister_ioapic (acpi_handle handle, u32 gsi_base) | |
901 | { | |
0e888adc | 902 | return iosapic_remove(gsi_base); |
b1bb248a KK |
903 | } |
904 | EXPORT_SYMBOL(acpi_unregister_ioapic); | |
905 | ||
1da177e4 | 906 | #endif /* CONFIG_ACPI_BOOT */ |