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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux.git] / arch / ia64 / kernel / acpi.c
CommitLineData
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 <[email protected]>
6 * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
7 * David Mosberger-Tang <[email protected]>
8 * Copyright (C) 2000 Intel Corp.
9 * Copyright (C) 2000,2001 J.I. Lee <[email protected]>
10 * Copyright (C) 2001 Paul Diefenbaugh <[email protected]>
11 * Copyright (C) 2001 Jenna Hall <[email protected]>
12 * Copyright (C) 2001 Takayoshi Kochi <[email protected]>
13 * Copyright (C) 2002 Erich Focht <[email protected]>
55e59c51 14 * Copyright (C) 2004 Ashok Raj <[email protected]>
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
1da177e4
LT
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>
5a0e3ad6 47#include <linux/slab.h>
d8191fa4 48#include <acpi/processor.h>
1da177e4
LT
49#include <asm/io.h>
50#include <asm/iosapic.h>
51#include <asm/machvec.h>
52#include <asm/page.h>
1da177e4
LT
53#include <asm/numa.h>
54#include <asm/sal.h>
55#include <asm/cyclone.h>
56
1da177e4
LT
57#define PREFIX "ACPI: "
58
247dba58 59int acpi_lapic;
55e59c51
AR
60unsigned int acpi_cpei_override;
61unsigned int acpi_cpei_phys_cpuid;
62
e8b2fd01
LB
63unsigned long acpi_wakeup_address = 0;
64
239665a3
LB
65#ifdef CONFIG_IA64_GENERIC
66static unsigned long __init acpi_find_rsdp(void)
67{
68 unsigned long rsdp_phys = 0;
69
70 if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
71 rsdp_phys = efi.acpi20;
72 else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
73 printk(KERN_WARNING PREFIX
74 "v1.0/r0.71 tables no longer supported\n");
75 return rsdp_phys;
76}
239665a3 77
d57c4a38
TL
78const char __init *
79acpi_get_sysname(void)
1da177e4 80{
1da177e4 81 unsigned long rsdp_phys;
ad71860a 82 struct acpi_table_rsdp *rsdp;
1da177e4
LT
83 struct acpi_table_xsdt *xsdt;
84 struct acpi_table_header *hdr;
d3f13810 85#ifdef CONFIG_INTEL_IOMMU
62fdd767
FY
86 u64 i, nentries;
87#endif
1da177e4
LT
88
89 rsdp_phys = acpi_find_rsdp();
90 if (!rsdp_phys) {
4be44fcd
LB
91 printk(KERN_ERR
92 "ACPI 2.0 RSDP not found, default to \"dig\"\n");
1da177e4
LT
93 return "dig";
94 }
95
ad71860a
AS
96 rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
97 if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
4be44fcd
LB
98 printk(KERN_ERR
99 "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
1da177e4
LT
100 return "dig";
101 }
102
5f3b1a8b 103 xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
1da177e4 104 hdr = &xsdt->header;
ad71860a 105 if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
4be44fcd
LB
106 printk(KERN_ERR
107 "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
1da177e4
LT
108 return "dig";
109 }
110
111 if (!strcmp(hdr->oem_id, "HP")) {
112 return "hpzx1";
4be44fcd 113 } else if (!strcmp(hdr->oem_id, "SGI")) {
22246614
JS
114 if (!strcmp(hdr->oem_table_id + 4, "UV"))
115 return "uv";
116 else
117 return "sn2";
1da177e4
LT
118 }
119
d3f13810 120#ifdef CONFIG_INTEL_IOMMU
62fdd767
FY
121 /* Look for Intel IOMMU */
122 nentries = (hdr->length - sizeof(*hdr)) /
123 sizeof(xsdt->table_offset_entry[0]);
124 for (i = 0; i < nentries; i++) {
125 hdr = __va(xsdt->table_offset_entry[i]);
126 if (strncmp(hdr->signature, ACPI_SIG_DMAR,
127 sizeof(ACPI_SIG_DMAR) - 1) == 0)
128 return "dig_vtd";
129 }
130#endif
131
1da177e4 132 return "dig";
1da177e4 133}
d868080d 134#endif /* CONFIG_IA64_GENERIC */
1da177e4
LT
135
136#define ACPI_MAX_PLATFORM_INTERRUPTS 256
137
138/* Array to record platform interrupt vectors for generic interrupt routing. */
139int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
140 [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
141};
142
143enum 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 */
4be44fcd 149int acpi_request_vector(u32 int_type)
1da177e4
LT
150{
151 int vector = -1;
152
153 if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
154 /* corrected platform error interrupt */
155 vector = platform_intr_list[int_type];
156 } else
4be44fcd
LB
157 printk(KERN_ERR
158 "acpi_request_vector(): invalid interrupt type\n");
1da177e4
LT
159 return vector;
160}
161
6c9a58e8 162void __init __iomem *__acpi_map_table(unsigned long phys, unsigned long size)
1da177e4 163{
6c9a58e8 164 return __va(phys);
1da177e4
LT
165}
166
6c9a58e8 167void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
7d97277b
YL
168{
169}
170
1da177e4
LT
171/* --------------------------------------------------------------------------
172 Boot-time Table Parsing
173 -------------------------------------------------------------------------- */
174
4be44fcd
LB
175static int available_cpus __initdata;
176struct acpi_table_madt *acpi_madt __initdata;
177static u8 has_8259;
1da177e4
LT
178
179static int __init
5f3b1a8b 180acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
4be44fcd 181 const unsigned long end)
1da177e4 182{
5f3b1a8b 183 struct acpi_madt_local_apic_override *lapic;
1da177e4 184
5f3b1a8b 185 lapic = (struct acpi_madt_local_apic_override *)header;
1da177e4
LT
186
187 if (BAD_MADT_ENTRY(lapic, end))
188 return -EINVAL;
189
190 if (lapic->address) {
191 iounmap(ipi_base_addr);
192 ipi_base_addr = ioremap(lapic->address, 0);
193 }
194 return 0;
195}
196
1da177e4 197static int __init
5f3b1a8b 198acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 199{
5f3b1a8b 200 struct acpi_madt_local_sapic *lsapic;
1da177e4 201
5f3b1a8b 202 lsapic = (struct acpi_madt_local_sapic *)header;
1da177e4 203
5f3b1a8b 204 /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
1da177e4 205
5f3b1a8b 206 if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
1da177e4 207#ifdef CONFIG_SMP
4be44fcd
LB
208 smp_boot_data.cpu_phys_id[available_cpus] =
209 (lsapic->id << 8) | lsapic->eid;
1da177e4 210#endif
1da177e4
LT
211 ++available_cpus;
212 }
213
214 total_cpus++;
215 return 0;
216}
217
1da177e4 218static int __init
5f3b1a8b 219acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 220{
5f3b1a8b 221 struct acpi_madt_local_apic_nmi *lacpi_nmi;
1da177e4 222
5f3b1a8b 223 lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
1da177e4
LT
224
225 if (BAD_MADT_ENTRY(lacpi_nmi, end))
226 return -EINVAL;
227
228 /* TBD: Support lapic_nmi entries */
229 return 0;
230}
231
1da177e4 232static int __init
5f3b1a8b 233acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 234{
5f3b1a8b 235 struct acpi_madt_io_sapic *iosapic;
1da177e4 236
5f3b1a8b 237 iosapic = (struct acpi_madt_io_sapic *)header;
1da177e4
LT
238
239 if (BAD_MADT_ENTRY(iosapic, end))
240 return -EINVAL;
241
0e888adc 242 return iosapic_init(iosapic->address, iosapic->global_irq_base);
1da177e4
LT
243}
244
5810452d
LB
245static unsigned int __initdata acpi_madt_rev;
246
1da177e4 247static int __init
5f3b1a8b 248acpi_parse_plat_int_src(struct acpi_subtable_header * header,
4be44fcd 249 const unsigned long end)
1da177e4 250{
5f3b1a8b 251 struct acpi_madt_interrupt_source *plintsrc;
1da177e4
LT
252 int vector;
253
5f3b1a8b 254 plintsrc = (struct acpi_madt_interrupt_source *)header;
1da177e4
LT
255
256 if (BAD_MADT_ENTRY(plintsrc, end))
257 return -EINVAL;
258
259 /*
260 * Get vector assignment for this interrupt, set attributes,
261 * and program the IOSAPIC routing table.
262 */
263 vector = iosapic_register_platform_intr(plintsrc->type,
264 plintsrc->global_irq,
5f3b1a8b 265 plintsrc->io_sapic_vector,
1da177e4
LT
266 plintsrc->eid,
267 plintsrc->id,
5f3b1a8b
AS
268 ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) ==
269 ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
270 IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
271 ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
272 ACPI_MADT_TRIGGER_EDGE) ?
273 IOSAPIC_EDGE : IOSAPIC_LEVEL);
1da177e4
LT
274
275 platform_intr_list[plintsrc->type] = vector;
55e59c51 276 if (acpi_madt_rev > 1) {
5f3b1a8b 277 acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
55e59c51
AR
278 }
279
280 /*
281 * Save the physical id, so we can check when its being removed
282 */
283 acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
284
1da177e4
LT
285 return 0;
286}
287
b88e9265 288#ifdef CONFIG_HOTPLUG_CPU
55e59c51
AR
289unsigned int can_cpei_retarget(void)
290{
291 extern int cpe_vector;
ff741906 292 extern unsigned int force_cpei_retarget;
55e59c51
AR
293
294 /*
295 * Only if CPEI is supported and the override flag
296 * is present, otherwise return that its re-targettable
297 * if we are in polling mode.
298 */
ff741906
AR
299 if (cpe_vector > 0) {
300 if (acpi_cpei_override || force_cpei_retarget)
301 return 1;
302 else
303 return 0;
304 }
305 return 1;
55e59c51
AR
306}
307
308unsigned int is_cpu_cpei_target(unsigned int cpu)
309{
310 unsigned int logical_id;
311
312 logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
313
314 if (logical_id == cpu)
315 return 1;
316 else
317 return 0;
318}
319
320void set_cpei_target_cpu(unsigned int cpu)
321{
322 acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
323}
b88e9265 324#endif
55e59c51
AR
325
326unsigned int get_cpei_target_cpu(void)
327{
328 return acpi_cpei_phys_cpuid;
329}
330
1da177e4 331static int __init
5f3b1a8b 332acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
4be44fcd 333 const unsigned long end)
1da177e4 334{
5f3b1a8b 335 struct acpi_madt_interrupt_override *p;
1da177e4 336
5f3b1a8b 337 p = (struct acpi_madt_interrupt_override *)header;
1da177e4
LT
338
339 if (BAD_MADT_ENTRY(p, end))
340 return -EINVAL;
341
5f3b1a8b
AS
342 iosapic_override_isa_irq(p->source_irq, p->global_irq,
343 ((p->inti_flags & ACPI_MADT_POLARITY_MASK) ==
0577bb66
LJ
344 ACPI_MADT_POLARITY_ACTIVE_LOW) ?
345 IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
5f3b1a8b 346 ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
0577bb66
LJ
347 ACPI_MADT_TRIGGER_LEVEL) ?
348 IOSAPIC_LEVEL : IOSAPIC_EDGE);
1da177e4
LT
349 return 0;
350}
351
1da177e4 352static int __init
5f3b1a8b 353acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 354{
5f3b1a8b 355 struct acpi_madt_nmi_source *nmi_src;
1da177e4 356
5f3b1a8b 357 nmi_src = (struct acpi_madt_nmi_source *)header;
1da177e4
LT
358
359 if (BAD_MADT_ENTRY(nmi_src, end))
360 return -EINVAL;
361
362 /* TBD: Support nimsrc entries */
363 return 0;
364}
365
4be44fcd 366static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
1da177e4 367{
4be44fcd 368 if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
1da177e4
LT
369
370 /*
371 * Unfortunately ITC_DRIFT is not yet part of the
372 * official SAL spec, so the ITC_DRIFT bit is not
373 * set by the BIOS on this hardware.
374 */
375 sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
376
377 cyclone_setup();
378 }
379}
380
5f3b1a8b 381static int __init acpi_parse_madt(struct acpi_table_header *table)
1da177e4 382{
5f3b1a8b 383 acpi_madt = (struct acpi_table_madt *)table;
1da177e4 384
55e59c51
AR
385 acpi_madt_rev = acpi_madt->header.revision;
386
1da177e4
LT
387 /* remember the value for reference after free_initmem() */
388#ifdef CONFIG_ITANIUM
4be44fcd 389 has_8259 = 1; /* Firmware on old Itanium systems is broken */
1da177e4 390#else
5f3b1a8b 391 has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;
1da177e4
LT
392#endif
393 iosapic_system_init(has_8259);
394
395 /* Get base address of IPI Message Block */
396
5f3b1a8b
AS
397 if (acpi_madt->address)
398 ipi_base_addr = ioremap(acpi_madt->address, 0);
1da177e4
LT
399
400 printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
401
402 acpi_madt_oem_check(acpi_madt->header.oem_id,
4be44fcd 403 acpi_madt->header.oem_table_id);
1da177e4
LT
404
405 return 0;
406}
407
1da177e4
LT
408#ifdef CONFIG_ACPI_NUMA
409
410#undef SLIT_DEBUG
411
412#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
413
4be44fcd 414static int __initdata srat_num_cpus; /* number of cpus */
5b5e76e9 415static u32 pxm_flag[PXM_FLAG_LEN];
1da177e4
LT
416#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
417#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
1da177e4 418static struct acpi_table_slit __initdata *slit_table;
2c6e6db4 419cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
1da177e4 420
9f10f6a5
KG
421static int __init
422get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
3ad5ef8b
JS
423{
424 int pxm;
425
5f3b1a8b 426 pxm = pa->proximity_domain_lo;
9f10f6a5 427 if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
5f3b1a8b 428 pxm += pa->proximity_domain_hi[0] << 8;
3ad5ef8b
JS
429 return pxm;
430}
431
9f10f6a5
KG
432static int __init
433get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
3ad5ef8b
JS
434{
435 int pxm;
436
437 pxm = ma->proximity_domain;
9f10f6a5 438 if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
defad230 439 pxm &= 0xff;
5f3b1a8b 440
3ad5ef8b
JS
441 return pxm;
442}
443
1da177e4
LT
444/*
445 * ACPI 2.0 SLIT (System Locality Information Table)
446 * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
447 */
4be44fcd 448void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
1da177e4
LT
449{
450 u32 len;
451
452 len = sizeof(struct acpi_table_header) + 8
5f3b1a8b 453 + slit->locality_count * slit->locality_count;
1da177e4 454 if (slit->header.length != len) {
4be44fcd
LB
455 printk(KERN_ERR
456 "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
1da177e4 457 len, slit->header.length);
1da177e4
LT
458 return;
459 }
460 slit_table = slit;
461}
462
463void __init
5f3b1a8b 464acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
1da177e4 465{
3ad5ef8b
JS
466 int pxm;
467
5f3b1a8b 468 if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
d903cea3
KK
469 return;
470
05f2f274
TL
471 if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
472 printk_once(KERN_WARNING
dff0092b 473 "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
05f2f274
TL
474 ARRAY_SIZE(node_cpuid));
475 return;
476 }
3ad5ef8b
JS
477 pxm = get_processor_proximity_domain(pa);
478
1da177e4 479 /* record this node in proximity bitmap */
3ad5ef8b 480 pxm_bit_set(pxm);
1da177e4 481
4be44fcd 482 node_cpuid[srat_num_cpus].phys_id =
5f3b1a8b 483 (pa->apic_id << 8) | (pa->local_sapic_eid);
1da177e4 484 /* nid should be overridden as logical node id later */
3ad5ef8b 485 node_cpuid[srat_num_cpus].nid = pxm;
5d2068da 486 cpumask_set_cpu(srat_num_cpus, &early_cpu_possible_map);
1da177e4
LT
487 srat_num_cpus++;
488}
489
095adbb6 490int __init
5f3b1a8b 491acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
1da177e4
LT
492{
493 unsigned long paddr, size;
3ad5ef8b 494 int pxm;
1da177e4
LT
495 struct node_memblk_s *p, *q, *pend;
496
3ad5ef8b 497 pxm = get_memory_proximity_domain(ma);
1da177e4
LT
498
499 /* fill node memory chunk structure */
5f3b1a8b
AS
500 paddr = ma->base_address;
501 size = ma->length;
1da177e4
LT
502
503 /* Ignore disabled entries */
5f3b1a8b 504 if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
095adbb6 505 return -1;
1da177e4 506
fd3e4543
GK
507 if (num_node_memblks >= NR_NODE_MEMBLKS) {
508 pr_err("NUMA: too many memblk ranges\n");
509 return -EINVAL;
510 }
511
1da177e4
LT
512 /* record this node in proximity bitmap */
513 pxm_bit_set(pxm);
514
515 /* Insertion sort based on base address */
516 pend = &node_memblk[num_node_memblks];
517 for (p = &node_memblk[0]; p < pend; p++) {
518 if (paddr < p->start_paddr)
519 break;
520 }
521 if (p < pend) {
522 for (q = pend - 1; q >= p; q--)
523 *(q + 1) = *q;
524 }
525 p->start_paddr = paddr;
526 p->size = size;
527 p->nid = pxm;
528 num_node_memblks++;
095adbb6 529 return 0;
1da177e4
LT
530}
531
312521d0 532void __init acpi_numa_fixup(void)
1da177e4
LT
533{
534 int i, j, node_from, node_to;
535
536 /* If there's no SRAT, fix the phys_id and mark node 0 online */
537 if (srat_num_cpus == 0) {
538 node_set_online(0);
539 node_cpuid[0].phys_id = hard_smp_processor_id();
540 return;
541 }
542
543 /*
544 * MCD - This can probably be dropped now. No need for pxm ID to node ID
545 * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
546 */
1da177e4
LT
547 nodes_clear(node_online_map);
548 for (i = 0; i < MAX_PXM_DOMAINS; i++) {
549 if (pxm_bit_test(i)) {
762834e8 550 int nid = acpi_map_pxm_to_node(i);
1da177e4
LT
551 node_set_online(nid);
552 }
553 }
554
555 /* set logical node id in memory chunk structure */
556 for (i = 0; i < num_node_memblks; i++)
762834e8 557 node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
1da177e4
LT
558
559 /* assign memory bank numbers for each chunk on each node */
560 for_each_online_node(i) {
561 int bank;
562
563 bank = 0;
564 for (j = 0; j < num_node_memblks; j++)
565 if (node_memblk[j].nid == i)
566 node_memblk[j].bank = bank++;
567 }
568
569 /* set logical node id in cpu structure */
2c6e6db4 570 for_each_possible_early_cpu(i)
762834e8 571 node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
1da177e4 572
4be44fcd
LB
573 printk(KERN_INFO "Number of logical nodes in system = %d\n",
574 num_online_nodes());
575 printk(KERN_INFO "Number of memory chunks in system = %d\n",
576 num_node_memblks);
1da177e4 577
39b8931b
FY
578 if (!slit_table) {
579 for (i = 0; i < MAX_NUMNODES; i++)
580 for (j = 0; j < MAX_NUMNODES; j++)
ef78e5ec
MB
581 slit_distance(i, j) = i == j ?
582 LOCAL_DISTANCE : REMOTE_DISTANCE;
4be44fcd 583 return;
39b8931b
FY
584 }
585
1da177e4 586 memset(numa_slit, -1, sizeof(numa_slit));
5f3b1a8b 587 for (i = 0; i < slit_table->locality_count; i++) {
1da177e4
LT
588 if (!pxm_bit_test(i))
589 continue;
762834e8 590 node_from = pxm_to_node(i);
5f3b1a8b 591 for (j = 0; j < slit_table->locality_count; j++) {
1da177e4
LT
592 if (!pxm_bit_test(j))
593 continue;
762834e8 594 node_to = pxm_to_node(j);
ef78e5ec 595 slit_distance(node_from, node_to) =
5f3b1a8b 596 slit_table->entry[i * slit_table->locality_count + j];
1da177e4
LT
597 }
598 }
599
600#ifdef SLIT_DEBUG
601 printk("ACPI 2.0 SLIT locality table:\n");
602 for_each_online_node(i) {
603 for_each_online_node(j)
4be44fcd 604 printk("%03d ", node_distance(i, j));
1da177e4
LT
605 printk("\n");
606 }
607#endif
608}
4be44fcd 609#endif /* CONFIG_ACPI_NUMA */
1da177e4 610
1f3a6a15
KK
611/*
612 * success: return IRQ number (>=0)
613 * failure: return < 0
614 */
a2f809b0 615int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
1da177e4 616{
3948ec94
JK
617 if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
618 return gsi;
619
1da177e4
LT
620 if (has_8259 && gsi < 16)
621 return isa_irq_to_vector(gsi);
622
623 return iosapic_register_intr(gsi,
cb654695 624 (polarity ==
4be44fcd
LB
625 ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
626 IOSAPIC_POL_LOW,
cb654695 627 (triggering ==
4be44fcd
LB
628 ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
629 IOSAPIC_LEVEL);
1da177e4 630}
a42b9bfe 631EXPORT_SYMBOL_GPL(acpi_register_gsi);
4be44fcd 632
4be44fcd 633void acpi_unregister_gsi(u32 gsi)
1da177e4 634{
72253943
JK
635 if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
636 return;
637
3fb2c74e
PB
638 if (has_8259 && gsi < 16)
639 return;
640
1da177e4
LT
641 iosapic_unregister_intr(gsi);
642}
a42b9bfe 643EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
4be44fcd 644
5f3b1a8b 645static int __init acpi_parse_fadt(struct acpi_table_header *table)
1da177e4
LT
646{
647 struct acpi_table_header *fadt_header;
cee324b1 648 struct acpi_table_fadt *fadt;
1da177e4 649
5f3b1a8b 650 fadt_header = (struct acpi_table_header *)table;
1da177e4 651 if (fadt_header->revision != 3)
4be44fcd 652 return -ENODEV; /* Only deal with ACPI 2.0 FADT */
1da177e4 653
cee324b1 654 fadt = (struct acpi_table_fadt *)fadt_header;
1da177e4 655
a2f809b0
YL
656 acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
657 ACPI_ACTIVE_LOW);
1da177e4
LT
658 return 0;
659}
660
62ee0540
DC
661int __init early_acpi_boot_init(void)
662{
663 int ret;
664
665 /*
666 * do a partial walk of MADT to determine how many CPUs
667 * we have including offline CPUs
668 */
669 if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
670 printk(KERN_ERR PREFIX "Can't find MADT\n");
671 return 0;
672 }
673
674 ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
675 acpi_parse_lsapic, NR_CPUS);
676 if (ret < 1)
677 printk(KERN_ERR PREFIX
678 "Error parsing MADT - no LAPIC entries\n");
247dba58
BH
679 else
680 acpi_lapic = 1;
62ee0540 681
12cda817
TH
682#ifdef CONFIG_SMP
683 if (available_cpus == 0) {
684 printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
685 printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
686 smp_boot_data.cpu_phys_id[available_cpus] =
687 hard_smp_processor_id();
688 available_cpus = 1; /* We've got at least one of these, no? */
689 }
690 smp_boot_data.cpu_count = available_cpus;
691#endif
692 /* Make boot-up look pretty */
693 printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
694 total_cpus);
695
62ee0540
DC
696 return 0;
697}
698
4be44fcd 699int __init acpi_boot_init(void)
1da177e4
LT
700{
701
702 /*
703 * MADT
704 * ----
705 * Parse the Multiple APIC Description Table (MADT), if exists.
706 * Note that this table provides platform SMP configuration
707 * information -- the successor to MPS tables.
708 */
709
db2d4ccd 710 if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1da177e4
LT
711 printk(KERN_ERR PREFIX "Can't find MADT\n");
712 goto skip_madt;
713 }
714
715 /* Local APIC */
716
4be44fcd 717 if (acpi_table_parse_madt
5f3b1a8b 718 (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0)
4be44fcd
LB
719 printk(KERN_ERR PREFIX
720 "Error parsing LAPIC address override entry\n");
1da177e4 721
5f3b1a8b 722 if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
4be44fcd 723 < 0)
1da177e4
LT
724 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
725
726 /* I/O APIC */
727
4be44fcd 728 if (acpi_table_parse_madt
7f6ff62a
GB
729 (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
730 if (!ia64_platform_is("sn2"))
731 printk(KERN_ERR PREFIX
732 "Error parsing MADT - no IOSAPIC entries\n");
733 }
1da177e4
LT
734
735 /* System-Level Interrupt Routing */
736
4be44fcd 737 if (acpi_table_parse_madt
5f3b1a8b 738 (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src,
4be44fcd
LB
739 ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
740 printk(KERN_ERR PREFIX
741 "Error parsing platform interrupt source entry\n");
1da177e4 742
4be44fcd 743 if (acpi_table_parse_madt
5f3b1a8b 744 (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0)
4be44fcd
LB
745 printk(KERN_ERR PREFIX
746 "Error parsing interrupt source overrides entry\n");
1da177e4 747
5f3b1a8b 748 if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0)
1da177e4 749 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
4be44fcd 750 skip_madt:
1da177e4
LT
751
752 /*
753 * FADT says whether a legacy keyboard controller is present.
754 * The FADT also contains an SCI_INT line, by which the system
755 * gets interrupts such as power and sleep buttons. If it's not
756 * on a Legacy interrupt, it needs to be setup.
757 */
db2d4ccd 758 if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
1da177e4
LT
759 printk(KERN_ERR PREFIX "Can't find FADT\n");
760
12cda817 761#ifdef CONFIG_ACPI_NUMA
1da177e4 762#ifdef CONFIG_SMP
1da177e4
LT
763 if (srat_num_cpus == 0) {
764 int cpu, i = 1;
765 for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
4be44fcd
LB
766 if (smp_boot_data.cpu_phys_id[cpu] !=
767 hard_smp_processor_id())
768 node_cpuid[i++].phys_id =
769 smp_boot_data.cpu_phys_id[cpu];
1da177e4 770 }
8d7e3517 771#endif
8d7e3517 772 build_cpu_to_node_map();
1da177e4 773#endif
1da177e4
LT
774 return 0;
775}
776
4be44fcd 777int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
1da177e4 778{
3c3738c8 779 int tmp;
1da177e4
LT
780
781 if (has_8259 && gsi < 16)
782 *irq = isa_irq_to_vector(gsi);
783 else {
3c3738c8
KK
784 tmp = gsi_to_irq(gsi);
785 if (tmp == -1)
1da177e4 786 return -1;
3c3738c8 787 *irq = tmp;
1da177e4
LT
788 }
789 return 0;
790}
791
2c2df841
EB
792int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
793{
794 if (isa_irq >= 16)
795 return -1;
796 *gsi = isa_irq;
797 return 0;
798}
799
1da177e4
LT
800/*
801 * ACPI based hotplug CPU support
802 */
803#ifdef CONFIG_ACPI_HOTPLUG_CPU
dc6db24d 804int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
1da177e4
LT
805{
806#ifdef CONFIG_ACPI_NUMA
1da177e4 807 /*
08992986
KH
808 * We don't have cpu-only-node hotadd. But if the system equips
809 * SRAT table, pxm is already found and node is ready.
810 * So, just pxm_to_nid(pxm) is OK.
811 * This code here is for the system which doesn't have full SRAT
812 * table for possible cpus.
1da177e4 813 */
4be44fcd 814 node_cpuid[cpu].phys_id = physid;
b1e9cee7 815 node_cpuid[cpu].nid = acpi_get_node(handle);
1da177e4 816#endif
b1e9cee7 817 return 0;
1da177e4
LT
818}
819
a6b14fa6
AR
820int additional_cpus __initdata = -1;
821
822static __init int setup_additional_cpus(char *s)
823{
824 if (s)
825 additional_cpus = simple_strtol(s, NULL, 0);
826
827 return 0;
828}
829
830early_param("additional_cpus", setup_additional_cpus);
831
832/*
5f054e31 833 * cpu_possible_mask should be static, it cannot change as CPUs
a6b14fa6
AR
834 * are onlined, or offlined. The reason is per-cpu data-structures
835 * are allocated by some modules at init time, and dont expect to
836 * do this dynamically on cpu arrival/departure.
7d7f9848 837 * cpu_present_mask on the other hand can change dynamically.
a6b14fa6
AR
838 * In case when cpu_hotplug is not compiled, then we resort to current
839 * behaviour, which is cpu_possible == cpu_present.
840 * - Ashok Raj
841 *
842 * Three ways to find out the number of additional hotplug CPUs:
843 * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
844 * - The user can overwrite it with additional_cpus=NUM
845 * - Otherwise don't reserve additional CPUs.
846 */
847__init void prefill_possible_map(void)
848{
849 int i;
850 int possible, disabled_cpus;
851
852 disabled_cpus = total_cpus - available_cpus;
8f8b1138 853
a6b14fa6 854 if (additional_cpus == -1) {
8f8b1138 855 if (disabled_cpus > 0)
a6b14fa6 856 additional_cpus = disabled_cpus;
8f8b1138 857 else
a6b14fa6 858 additional_cpus = 0;
8f8b1138
AR
859 }
860
861 possible = available_cpus + additional_cpus;
862
2b633e3f
YL
863 if (possible > nr_cpu_ids)
864 possible = nr_cpu_ids;
a6b14fa6
AR
865
866 printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
8f8b1138 867 possible, max((possible - available_cpus), 0));
a6b14fa6
AR
868
869 for (i = 0; i < possible; i++)
2af51a3f 870 set_cpu_possible(i, true);
a6b14fa6
AR
871}
872
d536bf3d 873static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
1da177e4 874{
1da177e4 875 cpumask_t tmp_map;
d536bf3d 876 int cpu;
1da177e4 877
5dd3c994
RR
878 cpumask_complement(&tmp_map, cpu_present_mask);
879 cpu = cpumask_first(&tmp_map);
880 if (cpu >= nr_cpu_ids)
1da177e4
LT
881 return -EINVAL;
882
883 acpi_map_cpu2node(handle, cpu, physid);
884
7d7f9848 885 set_cpu_present(cpu, true);
1da177e4 886 ia64_cpu_to_sapicid[cpu] = physid;
1da177e4 887
d8191fa4
AC
888 acpi_processor_set_pdc(handle);
889
1da177e4 890 *pcpu = cpu;
4be44fcd 891 return (0);
1da177e4 892}
1da177e4 893
af10f941 894/* wrapper to silence section mismatch warning */
febf2407
VK
895int __ref acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id,
896 int *pcpu)
af10f941 897{
d536bf3d 898 return _acpi_map_lsapic(handle, physid, pcpu);
af10f941 899}
d02dc27d 900EXPORT_SYMBOL(acpi_map_cpu);
1da177e4 901
d02dc27d 902int acpi_unmap_cpu(int cpu)
1da177e4 903{
1da177e4 904 ia64_cpu_to_sapicid[cpu] = -1;
7d7f9848 905 set_cpu_present(cpu, false);
1da177e4
LT
906
907#ifdef CONFIG_ACPI_NUMA
908 /* NUMA specific cleanup's */
909#endif
910
4be44fcd 911 return (0);
1da177e4 912}
d02dc27d 913EXPORT_SYMBOL(acpi_unmap_cpu);
4be44fcd 914#endif /* CONFIG_ACPI_HOTPLUG_CPU */
1da177e4
LT
915
916#ifdef CONFIG_ACPI_NUMA
5b5e76e9
GKH
917static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth,
918 void *context, void **ret)
1da177e4 919{
4be44fcd 920 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1da177e4 921 union acpi_object *obj;
5f3b1a8b 922 struct acpi_madt_io_sapic *iosapic;
1da177e4 923 unsigned int gsi_base;
b1e9cee7 924 int node;
1da177e4
LT
925
926 /* Only care about objects w/ a method that returns the MADT */
927 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
928 return AE_OK;
929
930 if (!buffer.length || !buffer.pointer)
931 return AE_OK;
932
933 obj = buffer.pointer;
934 if (obj->type != ACPI_TYPE_BUFFER ||
935 obj->buffer.length < sizeof(*iosapic)) {
02438d87 936 kfree(buffer.pointer);
1da177e4
LT
937 return AE_OK;
938 }
939
5f3b1a8b 940 iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
1da177e4 941
5f3b1a8b 942 if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
02438d87 943 kfree(buffer.pointer);
1da177e4
LT
944 return AE_OK;
945 }
946
947 gsi_base = iosapic->global_irq_base;
948
02438d87 949 kfree(buffer.pointer);
1da177e4 950
b1e9cee7
BH
951 /* OK, it's an IOSAPIC MADT entry; associate it with a node */
952 node = acpi_get_node(handle);
953 if (node == NUMA_NO_NODE || !node_online(node) ||
fbb776c3 954 cpumask_empty(cpumask_of_node(node)))
1da177e4
LT
955 return AE_OK;
956
957 /* We know a gsi to node mapping! */
958 map_iosapic_to_node(gsi_base, node);
959 return AE_OK;
960}
650316f1
BH
961
962static int __init
963acpi_map_iosapics (void)
964{
965 acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
966 return 0;
967}
968
969fs_initcall(acpi_map_iosapics);
970#endif /* CONFIG_ACPI_NUMA */
b1bb248a 971
c5b5a599 972int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
b1bb248a 973{
0e888adc
KK
974 int err;
975
976 if ((err = iosapic_init(phys_addr, gsi_base)))
977 return err;
978
24b8e0cc 979#ifdef CONFIG_ACPI_NUMA
0e888adc 980 acpi_map_iosapic(handle, 0, NULL, NULL);
4be44fcd 981#endif /* CONFIG_ACPI_NUMA */
0e888adc
KK
982
983 return 0;
b1bb248a 984}
4be44fcd 985
b1bb248a
KK
986EXPORT_SYMBOL(acpi_register_ioapic);
987
4be44fcd 988int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
b1bb248a 989{
0e888adc 990 return iosapic_remove(gsi_base);
b1bb248a 991}
4be44fcd 992
b1bb248a
KK
993EXPORT_SYMBOL(acpi_unregister_ioapic);
994
e8b2fd01 995/*
f1a2003e 996 * acpi_suspend_lowlevel() - save kernel state and suspend.
e8b2fd01
LB
997 *
998 * TBD when when IA64 starts to support suspend...
999 */
f1a2003e 1000int acpi_suspend_lowlevel(void) { return 0; }
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