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