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-kouchi@cq.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/init.h>
36 #include <linux/kernel.h>
37 #include <linux/sched.h>
38 #include <linux/smp.h>
39 #include <linux/string.h>
40 #include <linux/types.h>
41 #include <linux/irq.h>
42 #include <linux/acpi.h>
43 #include <linux/efi.h>
44 #include <linux/mm.h>
45 #include <linux/mmzone.h>
46 #include <asm/io.h>
47 #include <asm/iosapic.h>
48 #include <asm/machvec.h>
49 #include <asm/page.h>
50 #include <asm/system.h>
51 #include <asm/numa.h>
52
53
54 #define PREFIX "ACPI: "
55
56 asm (".weak iosapic_register_intr");
57 asm (".weak iosapic_override_isa_irq");
58 asm (".weak iosapic_register_platform_intr");
59 asm (".weak iosapic_init");
60 asm (".weak iosapic_system_init");
61 asm (".weak iosapic_version");
62
63 void (*pm_idle) (void);
64 void (*pm_power_off) (void);
65
66 unsigned char acpi_kbd_controller_present = 1;
67
68 const char *
69 acpi_get_sysname (void)
70 {
71 #ifdef CONFIG_IA64_GENERIC
72 unsigned long rsdp_phys;
73 struct acpi20_table_rsdp *rsdp;
74 struct acpi_table_xsdt *xsdt;
75 struct acpi_table_header *hdr;
76
77 rsdp_phys = acpi_find_rsdp();
78 if (!rsdp_phys) {
79 printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n");
80 return "dig";
81 }
82
83 rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys);
84 if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) {
85 printk(KERN_ERR "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
86 return "dig";
87 }
88
89 xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
90 hdr = &xsdt->header;
91 if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) {
92 printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
93 return "dig";
94 }
95
96 if (!strcmp(hdr->oem_id, "HP")) {
97 return "hp";
98 }
99 else if (!strcmp(hdr->oem_id, "SGI")) {
100 return "sn2";
101 }
102
103 return "dig";
104 #else
105 # if defined (CONFIG_IA64_HP_SIM)
106 return "hpsim";
107 # elif defined (CONFIG_IA64_HP_ZX1)
108 return "hp";
109 # elif defined (CONFIG_IA64_SGI_SN2)
110 return "sn2";
111 # elif defined (CONFIG_IA64_DIG)
112 return "dig";
113 # else
114 # error Unknown platform. Fix acpi.c.
115 # endif
116 #endif
117 }
118
119 #ifdef CONFIG_ACPI
120
121 struct acpi_vendor_descriptor {
122 u8 guid_id;
123 efi_guid_t guid;
124 };
125
126 struct acpi_vendor_info {
127 struct acpi_vendor_descriptor *descriptor;
128 u8 *data;
129 u32 length;
130 };
131
132 acpi_status
133 acpi_vendor_resource_match (struct acpi_resource *resource, void *context)
134 {
135 struct acpi_vendor_info *info = (struct acpi_vendor_info *) context;
136 struct acpi_resource_vendor *vendor;
137 struct acpi_vendor_descriptor *descriptor;
138 u32 length;
139
140 if (resource->id != ACPI_RSTYPE_VENDOR)
141 return AE_OK;
142
143 vendor = (struct acpi_resource_vendor *) &resource->data;
144 descriptor = (struct acpi_vendor_descriptor *) vendor->reserved;
145 if (vendor->length <= sizeof(*info->descriptor) ||
146 descriptor->guid_id != info->descriptor->guid_id ||
147 efi_guidcmp(descriptor->guid, info->descriptor->guid))
148 return AE_OK;
149
150 length = vendor->length - sizeof(struct acpi_vendor_descriptor);
151 info->data = acpi_os_allocate(length);
152 if (!info->data)
153 return AE_NO_MEMORY;
154
155 memcpy(info->data, vendor->reserved + sizeof(struct acpi_vendor_descriptor), length);
156 info->length = length;
157 return AE_CTRL_TERMINATE;
158 }
159
160 acpi_status
161 acpi_find_vendor_resource (acpi_handle obj, struct acpi_vendor_descriptor *id,
162 u8 **data, u32 *length)
163 {
164 struct acpi_vendor_info info;
165
166 info.descriptor = id;
167 info.data = 0;
168
169 acpi_walk_resources(obj, METHOD_NAME__CRS, acpi_vendor_resource_match, &info);
170 if (!info.data)
171 return AE_NOT_FOUND;
172
173 *data = info.data;
174 *length = info.length;
175 return AE_OK;
176 }
177
178 struct acpi_vendor_descriptor hp_ccsr_descriptor = {
179 .guid_id = 2,
180 .guid = EFI_GUID(0x69e9adf9, 0x924f, 0xab5f, 0xf6, 0x4a, 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad)
181 };
182
183 acpi_status
184 acpi_hp_csr_space (acpi_handle obj, u64 *csr_base, u64 *csr_length)
185 {
186 acpi_status status;
187 u8 *data;
188 u32 length;
189
190 status = acpi_find_vendor_resource(obj, &hp_ccsr_descriptor, &data, &length);
191
192 if (ACPI_FAILURE(status) || length != 16)
193 return AE_NOT_FOUND;
194
195 memcpy(csr_base, data, sizeof(*csr_base));
196 memcpy(csr_length, data + 8, sizeof(*csr_length));
197 acpi_os_free(data);
198
199 return AE_OK;
200 }
201
202 #endif /* CONFIG_ACPI */
203
204 #ifdef CONFIG_ACPI_BOOT
205
206 #define ACPI_MAX_PLATFORM_INTERRUPTS 256
207
208 /* Array to record platform interrupt vectors for generic interrupt routing. */
209 int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
210 [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
211 };
212
213 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
214
215 /*
216 * Interrupt routing API for device drivers. Provides interrupt vector for
217 * a generic platform event. Currently only CPEI is implemented.
218 */
219 int
220 acpi_request_vector (u32 int_type)
221 {
222 int vector = -1;
223
224 if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
225 /* corrected platform error interrupt */
226 vector = platform_intr_list[int_type];
227 } else
228 printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n");
229 return vector;
230 }
231
232 char *
233 __acpi_map_table (unsigned long phys_addr, unsigned long size)
234 {
235 return __va(phys_addr);
236 }
237
238 /* --------------------------------------------------------------------------
239 Boot-time Table Parsing
240 -------------------------------------------------------------------------- */
241
242 static int total_cpus __initdata;
243 static int available_cpus __initdata;
244 struct acpi_table_madt * acpi_madt __initdata;
245 static u8 has_8259;
246
247
248 static int __init
249 acpi_parse_lapic_addr_ovr (acpi_table_entry_header *header)
250 {
251 struct acpi_table_lapic_addr_ovr *lapic;
252
253 lapic = (struct acpi_table_lapic_addr_ovr *) header;
254 if (!lapic)
255 return -EINVAL;
256
257 acpi_table_print_madt_entry(header);
258
259 if (lapic->address) {
260 iounmap((void *) ipi_base_addr);
261 ipi_base_addr = (unsigned long) ioremap(lapic->address, 0);
262 }
263 return 0;
264 }
265
266
267 static int __init
268 acpi_parse_lsapic (acpi_table_entry_header *header)
269 {
270 struct acpi_table_lsapic *lsapic;
271
272 lsapic = (struct acpi_table_lsapic *) header;
273 if (!lsapic)
274 return -EINVAL;
275
276 acpi_table_print_madt_entry(header);
277
278 printk(KERN_INFO "CPU %d (0x%04x)", total_cpus, (lsapic->id << 8) | lsapic->eid);
279
280 if (!lsapic->flags.enabled)
281 printk(" disabled");
282 else if (available_cpus >= NR_CPUS)
283 printk(" ignored (increase NR_CPUS)");
284 else {
285 printk(" enabled");
286 #ifdef CONFIG_SMP
287 smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
288 if (hard_smp_processor_id()
289 == (unsigned int) smp_boot_data.cpu_phys_id[available_cpus])
290 printk(" (BSP)");
291 #endif
292 ++available_cpus;
293 }
294
295 printk("\n");
296
297 total_cpus++;
298 return 0;
299 }
300
301
302 static int __init
303 acpi_parse_lapic_nmi (acpi_table_entry_header *header)
304 {
305 struct acpi_table_lapic_nmi *lacpi_nmi;
306
307 lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
308 if (!lacpi_nmi)
309 return -EINVAL;
310
311 acpi_table_print_madt_entry(header);
312
313 /* TBD: Support lapic_nmi entries */
314 return 0;
315 }
316
317
318 static int __init
319 acpi_parse_iosapic (acpi_table_entry_header *header)
320 {
321 struct acpi_table_iosapic *iosapic;
322
323 iosapic = (struct acpi_table_iosapic *) header;
324 if (!iosapic)
325 return -EINVAL;
326
327 acpi_table_print_madt_entry(header);
328
329 if (iosapic_init)
330 iosapic_init(iosapic->address, iosapic->global_irq_base);
331
332 return 0;
333 }
334
335
336 static int __init
337 acpi_parse_plat_int_src (acpi_table_entry_header *header)
338 {
339 struct acpi_table_plat_int_src *plintsrc;
340 int vector;
341
342 plintsrc = (struct acpi_table_plat_int_src *) header;
343 if (!plintsrc)
344 return -EINVAL;
345
346 acpi_table_print_madt_entry(header);
347
348 if (!iosapic_register_platform_intr) {
349 printk(KERN_WARNING PREFIX "No ACPI platform interrupt support\n");
350 return -ENODEV;
351 }
352
353 /*
354 * Get vector assignment for this interrupt, set attributes,
355 * and program the IOSAPIC routing table.
356 */
357 vector = iosapic_register_platform_intr(plintsrc->type,
358 plintsrc->global_irq,
359 plintsrc->iosapic_vector,
360 plintsrc->eid,
361 plintsrc->id,
362 (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
363 (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
364
365 platform_intr_list[plintsrc->type] = vector;
366 return 0;
367 }
368
369
370 static int __init
371 acpi_parse_int_src_ovr (acpi_table_entry_header *header)
372 {
373 struct acpi_table_int_src_ovr *p;
374
375 p = (struct acpi_table_int_src_ovr *) header;
376 if (!p)
377 return -EINVAL;
378
379 acpi_table_print_madt_entry(header);
380
381 /* Ignore if the platform doesn't support overrides */
382 if (!iosapic_override_isa_irq)
383 return 0;
384
385 iosapic_override_isa_irq(p->bus_irq, p->global_irq,
386 (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
387 (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
388 return 0;
389 }
390
391
392 static int __init
393 acpi_parse_nmi_src (acpi_table_entry_header *header)
394 {
395 struct acpi_table_nmi_src *nmi_src;
396
397 nmi_src = (struct acpi_table_nmi_src*) header;
398 if (!nmi_src)
399 return -EINVAL;
400
401 acpi_table_print_madt_entry(header);
402
403 /* TBD: Support nimsrc entries */
404 return 0;
405 }
406
407
408 static int __init
409 acpi_parse_madt (unsigned long phys_addr, unsigned long size)
410 {
411 if (!phys_addr || !size)
412 return -EINVAL;
413
414 acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
415
416 /* remember the value for reference after free_initmem() */
417 #ifdef CONFIG_ITANIUM
418 has_8259 = 1; /* Firmware on old Itanium systems is broken */
419 #else
420 has_8259 = acpi_madt->flags.pcat_compat;
421 #endif
422 if (iosapic_system_init)
423 iosapic_system_init(has_8259);
424
425 /* Get base address of IPI Message Block */
426
427 if (acpi_madt->lapic_address)
428 ipi_base_addr = (unsigned long) ioremap(acpi_madt->lapic_address, 0);
429
430 printk(KERN_INFO PREFIX "Local APIC address 0x%lx\n", ipi_base_addr);
431 return 0;
432 }
433
434
435 #ifdef CONFIG_ACPI_NUMA
436
437 #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
438
439 static int __initdata srat_num_cpus; /* number of cpus */
440 static u32 __initdata pxm_flag[PXM_FLAG_LEN];
441 #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
442 #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
443 /* maps to convert between proximity domain and logical node ID */
444 int __initdata pxm_to_nid_map[MAX_PXM_DOMAINS];
445 int __initdata nid_to_pxm_map[NR_NODES];
446 struct acpi_table_slit __initdata *slit_table;
447
448 /*
449 * ACPI 2.0 SLIT (System Locality Information Table)
450 * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
451 */
452 void __init
453 acpi_numa_slit_init (struct acpi_table_slit *slit)
454 {
455 u32 len;
456
457 len = sizeof(struct acpi_table_header) + 8
458 + slit->localities * slit->localities;
459 if (slit->header.length != len) {
460 printk("KERN_INFO ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
461 len, slit->header.length);
462 memset(numa_slit, 10, sizeof(numa_slit));
463 return;
464 }
465 slit_table = slit;
466 }
467
468 void __init
469 acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa)
470 {
471 /* record this node in proximity bitmap */
472 pxm_bit_set(pa->proximity_domain);
473
474 node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid);
475 /* nid should be overridden as logical node id later */
476 node_cpuid[srat_num_cpus].nid = pa->proximity_domain;
477 srat_num_cpus++;
478 }
479
480 void __init
481 acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
482 {
483 unsigned long paddr, size, hole_size, min_hole_size;
484 u8 pxm;
485 struct node_memblk_s *p, *q, *pend;
486
487 pxm = ma->proximity_domain;
488
489 /* fill node memory chunk structure */
490 paddr = ma->base_addr_hi;
491 paddr = (paddr << 32) | ma->base_addr_lo;
492 size = ma->length_hi;
493 size = (size << 32) | ma->length_lo;
494
495 if (num_memblks >= NR_MEMBLKS) {
496 printk(KERN_ERR "Too many mem chunks in SRAT. Ignoring %ld MBytes at %lx\n",
497 size/(1024*1024), paddr);
498 return;
499 }
500
501 /* Ignore disabled entries */
502 if (!ma->flags.enabled)
503 return;
504
505 /*
506 * When the chunk is not the first one in the node, check distance
507 * from the other chunks. When the hole is too huge ignore the chunk.
508 * This restriction should be removed when multiple chunks per node
509 * is supported.
510 */
511 pend = &node_memblk[num_memblks];
512 min_hole_size = 0;
513 for (p = &node_memblk[0]; p < pend; p++) {
514 if (p->nid != pxm)
515 continue;
516 if (p->start_paddr < paddr)
517 hole_size = paddr - (p->start_paddr + p->size);
518 else
519 hole_size = p->start_paddr - (paddr + size);
520
521 if (!min_hole_size || hole_size < min_hole_size)
522 min_hole_size = hole_size;
523 }
524
525 #if 0 /* test */
526 if (min_hole_size) {
527 if (min_hole_size > size) {
528 printk(KERN_ERR "Too huge memory hole. Ignoring %ld MBytes at %lx\n",
529 size/(1024*1024), paddr);
530 return;
531 }
532 }
533 #endif
534
535 /* record this node in proximity bitmap */
536 pxm_bit_set(pxm);
537
538 /* Insertion sort based on base address */
539 pend = &node_memblk[num_memblks];
540 for (p = &node_memblk[0]; p < pend; p++) {
541 if (paddr < p->start_paddr)
542 break;
543 }
544 if (p < pend) {
545 for (q = pend; q >= p; q--)
546 *(q + 1) = *q;
547 }
548 p->start_paddr = paddr;
549 p->size = size;
550 p->nid = pxm;
551 num_memblks++;
552 }
553
554 void __init
555 acpi_numa_arch_fixup(void)
556 {
557 int i, j, node_from, node_to;
558
559 if (srat_num_cpus == 0) {
560 node_cpuid[0].phys_id = hard_smp_processor_id();
561 return;
562 }
563
564 /* calculate total number of nodes in system from PXM bitmap */
565 numnodes = 0; /* init total nodes in system */
566
567 memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
568 memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
569 for (i = 0; i < MAX_PXM_DOMAINS; i++) {
570 if (pxm_bit_test(i)) {
571 pxm_to_nid_map[i] = numnodes;
572 nid_to_pxm_map[numnodes++] = i;
573 }
574 }
575
576 /* set logical node id in memory chunk structure */
577 for (i = 0; i < num_memblks; i++)
578 node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
579
580 /* assign memory bank numbers for each chunk on each node */
581 for (i = 0; i < numnodes; i++) {
582 int bank;
583
584 bank = 0;
585 for (j = 0; j < num_memblks; j++)
586 if (node_memblk[j].nid == i)
587 node_memblk[j].bank = bank++;
588 }
589
590 /* set logical node id in cpu structure */
591 for (i = 0; i < srat_num_cpus; i++)
592 node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
593
594 printk(KERN_INFO "Number of logical nodes in system = %d\n", numnodes);
595 printk(KERN_INFO "Number of memory chunks in system = %d\n", num_memblks);
596
597 if (!slit_table) return;
598 memset(numa_slit, -1, sizeof(numa_slit));
599 for (i=0; i<slit_table->localities; i++) {
600 if (!pxm_bit_test(i))
601 continue;
602 node_from = pxm_to_nid_map[i];
603 for (j=0; j<slit_table->localities; j++) {
604 if (!pxm_bit_test(j))
605 continue;
606 node_to = pxm_to_nid_map[j];
607 node_distance(node_from, node_to) =
608 slit_table->entry[i*slit_table->localities + j];
609 }
610 }
611
612 #ifdef SLIT_DEBUG
613 printk(KERN_DEBUG "ACPI 2.0 SLIT locality table:\n");
614 for (i = 0; i < numnodes; i++) {
615 for (j = 0; j < numnodes; j++)
616 printk(KERN_DEBUG "%03d ", node_distance(i,j));
617 printk("\n");
618 }
619 #endif
620 }
621 #endif /* CONFIG_ACPI_NUMA */
622
623 static int __init
624 acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
625 {
626 struct acpi_table_header *fadt_header;
627 struct fadt_descriptor_rev2 *fadt;
628 u32 sci_irq;
629
630 if (!phys_addr || !size)
631 return -EINVAL;
632
633 fadt_header = (struct acpi_table_header *) __va(phys_addr);
634 if (fadt_header->revision != 3)
635 return -ENODEV; /* Only deal with ACPI 2.0 FADT */
636
637 fadt = (struct fadt_descriptor_rev2 *) fadt_header;
638
639 if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
640 acpi_kbd_controller_present = 0;
641
642 sci_irq = fadt->sci_int;
643
644 if (has_8259 && sci_irq < 16)
645 return 0; /* legacy, no setup required */
646
647 if (!iosapic_register_intr)
648 return -ENODEV;
649
650 iosapic_register_intr(sci_irq, IOSAPIC_POL_LOW, IOSAPIC_LEVEL);
651 return 0;
652 }
653
654
655 unsigned long __init
656 acpi_find_rsdp (void)
657 {
658 unsigned long rsdp_phys = 0;
659
660 if (efi.acpi20)
661 rsdp_phys = __pa(efi.acpi20);
662 else if (efi.acpi)
663 printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n");
664 return rsdp_phys;
665 }
666
667
668 int __init
669 acpi_boot_init (void)
670 {
671
672 /*
673 * MADT
674 * ----
675 * Parse the Multiple APIC Description Table (MADT), if exists.
676 * Note that this table provides platform SMP configuration
677 * information -- the successor to MPS tables.
678 */
679
680 if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) {
681 printk(KERN_ERR PREFIX "Can't find MADT\n");
682 goto skip_madt;
683 }
684
685 /* Local APIC */
686
687 if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr) < 0)
688 printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
689
690 if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic) < 1)
691 printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n");
692
693 if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi) < 0)
694 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
695
696 /* I/O APIC */
697
698 if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic) < 1)
699 printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n");
700
701 /* System-Level Interrupt Routing */
702
703 if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src) < 0)
704 printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n");
705
706 if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr) < 0)
707 printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
708
709 if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src) < 0)
710 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
711 skip_madt:
712
713 /*
714 * FADT says whether a legacy keyboard controller is present.
715 * The FADT also contains an SCI_INT line, by which the system
716 * gets interrupts such as power and sleep buttons. If it's not
717 * on a Legacy interrupt, it needs to be setup.
718 */
719 if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1)
720 printk(KERN_ERR PREFIX "Can't find FADT\n");
721
722 #ifdef CONFIG_SMP
723 if (available_cpus == 0) {
724 printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
725 printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
726 smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id();
727 available_cpus = 1; /* We've got at least one of these, no? */
728 }
729 smp_boot_data.cpu_count = available_cpus;
730
731 smp_build_cpu_map();
732 # ifdef CONFIG_NUMA
733 /* If the platform did not have an SRAT table, initialize the
734 * node_cpuid table from the smp_boot_data array. All cpus
735 * will be on node 0.
736 */
737 if (srat_num_cpus == 0) {
738 int cpu, i=1;
739 for (cpu=0; cpu<smp_boot_data.cpu_count; cpu++)
740 if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
741 node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
742 }
743 build_cpu_to_node_map();
744 # endif
745
746 #endif
747 /* Make boot-up look pretty */
748 printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
749 return 0;
750 }
751
752 /*
753 * PCI Interrupt Routing
754 */
755
756 #ifdef CONFIG_PCI
757 int __init
758 acpi_get_prt (struct pci_vector_struct **vectors, int *count)
759 {
760 struct pci_vector_struct *vector;
761 struct list_head *node;
762 struct acpi_prt_entry *entry;
763 int i = 0;
764
765 if (!vectors || !count)
766 return -EINVAL;
767
768 *vectors = NULL;
769 *count = 0;
770
771 if (acpi_prt.count < 0) {
772 printk(KERN_ERR PREFIX "No PCI interrupt routing entries\n");
773 return -ENODEV;
774 }
775
776 /* Allocate vectors */
777
778 *vectors = kmalloc(sizeof(struct pci_vector_struct) * acpi_prt.count, GFP_KERNEL);
779 if (!(*vectors))
780 return -ENOMEM;
781
782 /* Convert PRT entries to IOSAPIC PCI vectors */
783
784 vector = *vectors;
785
786 list_for_each(node, &acpi_prt.entries) {
787 entry = (struct acpi_prt_entry *)node;
788 vector[i].segment = entry->id.segment;
789 vector[i].bus = entry->id.bus;
790 vector[i].pci_id = ((u32) entry->id.device << 16) | 0xffff;
791 vector[i].pin = entry->pin;
792 vector[i].irq = entry->link.index;
793 i++;
794 }
795 *count = acpi_prt.count;
796 return 0;
797 }
798 #endif /* CONFIG_PCI */
799
800 /* Assume IA64 always use I/O SAPIC */
801
802 int __init
803 acpi_get_interrupt_model (int *type)
804 {
805 if (!type)
806 return -EINVAL;
807
808 *type = ACPI_IRQ_MODEL_IOSAPIC;
809 return 0;
810 }
811
812 int
813 acpi_irq_to_vector (u32 irq)
814 {
815 if (has_8259 && irq < 16)
816 return isa_irq_to_vector(irq);
817
818 return gsi_to_vector(irq);
819 }
820
821 int
822 acpi_register_irq (u32 gsi, u32 polarity, u32 trigger)
823 {
824 int vector = 0;
825
826 if (has_8259 && gsi < 16)
827 return isa_irq_to_vector(gsi);
828
829 if (!iosapic_register_intr)
830 return 0;
831
832 /* Turn it on */
833 vector = iosapic_register_intr(gsi,
834 (polarity == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
835 (trigger == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
836 return vector;
837 }
838
839 #endif /* CONFIG_ACPI_BOOT */
840
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