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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 | ||
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> | |
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 || \ | |
5f3b1a8b | 58 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
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 | ||
55e59c51 AR |
67 | unsigned int acpi_cpei_override; |
68 | unsigned int acpi_cpei_phys_cpuid; | |
69 | ||
e8b2fd01 LB |
70 | unsigned long acpi_wakeup_address = 0; |
71 | ||
239665a3 LB |
72 | #ifdef CONFIG_IA64_GENERIC |
73 | static unsigned long __init acpi_find_rsdp(void) | |
74 | { | |
75 | unsigned long rsdp_phys = 0; | |
76 | ||
77 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) | |
78 | rsdp_phys = efi.acpi20; | |
79 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
80 | printk(KERN_WARNING PREFIX | |
81 | "v1.0/r0.71 tables no longer supported\n"); | |
82 | return rsdp_phys; | |
83 | } | |
84 | #endif | |
85 | ||
d57c4a38 TL |
86 | const char __init * |
87 | acpi_get_sysname(void) | |
1da177e4 LT |
88 | { |
89 | #ifdef CONFIG_IA64_GENERIC | |
90 | unsigned long rsdp_phys; | |
ad71860a | 91 | struct acpi_table_rsdp *rsdp; |
1da177e4 LT |
92 | struct acpi_table_xsdt *xsdt; |
93 | struct acpi_table_header *hdr; | |
94 | ||
95 | rsdp_phys = acpi_find_rsdp(); | |
96 | if (!rsdp_phys) { | |
4be44fcd LB |
97 | printk(KERN_ERR |
98 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
1da177e4 LT |
99 | return "dig"; |
100 | } | |
101 | ||
ad71860a AS |
102 | rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); |
103 | if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { | |
4be44fcd LB |
104 | printk(KERN_ERR |
105 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
106 | return "dig"; |
107 | } | |
108 | ||
5f3b1a8b | 109 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); |
1da177e4 | 110 | hdr = &xsdt->header; |
ad71860a | 111 | if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { |
4be44fcd LB |
112 | printk(KERN_ERR |
113 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
114 | return "dig"; |
115 | } | |
116 | ||
117 | if (!strcmp(hdr->oem_id, "HP")) { | |
118 | return "hpzx1"; | |
4be44fcd | 119 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
22246614 JS |
120 | if (!strcmp(hdr->oem_table_id + 4, "UV")) |
121 | return "uv"; | |
122 | else | |
123 | return "sn2"; | |
1da177e4 LT |
124 | } |
125 | ||
126 | return "dig"; | |
127 | #else | |
128 | # if defined (CONFIG_IA64_HP_SIM) | |
129 | return "hpsim"; | |
130 | # elif defined (CONFIG_IA64_HP_ZX1) | |
131 | return "hpzx1"; | |
132 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
133 | return "hpzx1_swiotlb"; | |
134 | # elif defined (CONFIG_IA64_SGI_SN2) | |
135 | return "sn2"; | |
22246614 JS |
136 | # elif defined (CONFIG_IA64_SGI_UV) |
137 | return "uv"; | |
1da177e4 LT |
138 | # elif defined (CONFIG_IA64_DIG) |
139 | return "dig"; | |
140 | # else | |
141 | # error Unknown platform. Fix acpi.c. | |
142 | # endif | |
143 | #endif | |
144 | } | |
145 | ||
888ba6c6 | 146 | #ifdef CONFIG_ACPI |
1da177e4 LT |
147 | |
148 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
149 | ||
150 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
151 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
152 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
153 | }; | |
154 | ||
155 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
156 | ||
157 | /* | |
158 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
159 | * a generic platform event. Currently only CPEI is implemented. | |
160 | */ | |
4be44fcd | 161 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
162 | { |
163 | int vector = -1; | |
164 | ||
165 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
166 | /* corrected platform error interrupt */ | |
167 | vector = platform_intr_list[int_type]; | |
168 | } else | |
4be44fcd LB |
169 | printk(KERN_ERR |
170 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
171 | return vector; |
172 | } | |
173 | ||
2fdf0741 | 174 | char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
175 | { |
176 | return __va(phys_addr); | |
177 | } | |
178 | ||
179 | /* -------------------------------------------------------------------------- | |
180 | Boot-time Table Parsing | |
181 | -------------------------------------------------------------------------- */ | |
182 | ||
4be44fcd LB |
183 | static int total_cpus __initdata; |
184 | static int available_cpus __initdata; | |
185 | struct acpi_table_madt *acpi_madt __initdata; | |
186 | static u8 has_8259; | |
1da177e4 LT |
187 | |
188 | static int __init | |
5f3b1a8b | 189 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 190 | const unsigned long end) |
1da177e4 | 191 | { |
5f3b1a8b | 192 | struct acpi_madt_local_apic_override *lapic; |
1da177e4 | 193 | |
5f3b1a8b | 194 | lapic = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
195 | |
196 | if (BAD_MADT_ENTRY(lapic, end)) | |
197 | return -EINVAL; | |
198 | ||
199 | if (lapic->address) { | |
200 | iounmap(ipi_base_addr); | |
201 | ipi_base_addr = ioremap(lapic->address, 0); | |
202 | } | |
203 | return 0; | |
204 | } | |
205 | ||
1da177e4 | 206 | static int __init |
5f3b1a8b | 207 | acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 208 | { |
5f3b1a8b | 209 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 210 | |
5f3b1a8b | 211 | lsapic = (struct acpi_madt_local_sapic *)header; |
1da177e4 | 212 | |
5f3b1a8b | 213 | /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ |
1da177e4 | 214 | |
5f3b1a8b | 215 | if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { |
1da177e4 | 216 | #ifdef CONFIG_SMP |
4be44fcd LB |
217 | smp_boot_data.cpu_phys_id[available_cpus] = |
218 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 219 | #endif |
1da177e4 LT |
220 | ++available_cpus; |
221 | } | |
222 | ||
223 | total_cpus++; | |
224 | return 0; | |
225 | } | |
226 | ||
1da177e4 | 227 | static int __init |
5f3b1a8b | 228 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 229 | { |
5f3b1a8b | 230 | struct acpi_madt_local_apic_nmi *lacpi_nmi; |
1da177e4 | 231 | |
5f3b1a8b | 232 | lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
233 | |
234 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
235 | return -EINVAL; | |
236 | ||
237 | /* TBD: Support lapic_nmi entries */ | |
238 | return 0; | |
239 | } | |
240 | ||
1da177e4 | 241 | static int __init |
5f3b1a8b | 242 | acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 243 | { |
5f3b1a8b | 244 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 245 | |
5f3b1a8b | 246 | iosapic = (struct acpi_madt_io_sapic *)header; |
1da177e4 LT |
247 | |
248 | if (BAD_MADT_ENTRY(iosapic, end)) | |
249 | return -EINVAL; | |
250 | ||
0e888adc | 251 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
252 | } |
253 | ||
5810452d LB |
254 | static unsigned int __initdata acpi_madt_rev; |
255 | ||
1da177e4 | 256 | static int __init |
5f3b1a8b | 257 | acpi_parse_plat_int_src(struct acpi_subtable_header * header, |
4be44fcd | 258 | const unsigned long end) |
1da177e4 | 259 | { |
5f3b1a8b | 260 | struct acpi_madt_interrupt_source *plintsrc; |
1da177e4 LT |
261 | int vector; |
262 | ||
5f3b1a8b | 263 | plintsrc = (struct acpi_madt_interrupt_source *)header; |
1da177e4 LT |
264 | |
265 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
266 | return -EINVAL; | |
267 | ||
268 | /* | |
269 | * Get vector assignment for this interrupt, set attributes, | |
270 | * and program the IOSAPIC routing table. | |
271 | */ | |
272 | vector = iosapic_register_platform_intr(plintsrc->type, | |
273 | plintsrc->global_irq, | |
5f3b1a8b | 274 | plintsrc->io_sapic_vector, |
1da177e4 LT |
275 | plintsrc->eid, |
276 | plintsrc->id, | |
5f3b1a8b AS |
277 | ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == |
278 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
279 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
280 | ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
281 | ACPI_MADT_TRIGGER_EDGE) ? | |
282 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
283 | |
284 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 | 285 | if (acpi_madt_rev > 1) { |
5f3b1a8b | 286 | acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; |
55e59c51 AR |
287 | } |
288 | ||
289 | /* | |
290 | * Save the physical id, so we can check when its being removed | |
291 | */ | |
292 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
293 | ||
1da177e4 LT |
294 | return 0; |
295 | } | |
296 | ||
b88e9265 | 297 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
298 | unsigned int can_cpei_retarget(void) |
299 | { | |
300 | extern int cpe_vector; | |
ff741906 | 301 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
302 | |
303 | /* | |
304 | * Only if CPEI is supported and the override flag | |
305 | * is present, otherwise return that its re-targettable | |
306 | * if we are in polling mode. | |
307 | */ | |
ff741906 AR |
308 | if (cpe_vector > 0) { |
309 | if (acpi_cpei_override || force_cpei_retarget) | |
310 | return 1; | |
311 | else | |
312 | return 0; | |
313 | } | |
314 | return 1; | |
55e59c51 AR |
315 | } |
316 | ||
317 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
318 | { | |
319 | unsigned int logical_id; | |
320 | ||
321 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
322 | ||
323 | if (logical_id == cpu) | |
324 | return 1; | |
325 | else | |
326 | return 0; | |
327 | } | |
328 | ||
329 | void set_cpei_target_cpu(unsigned int cpu) | |
330 | { | |
331 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
332 | } | |
b88e9265 | 333 | #endif |
55e59c51 AR |
334 | |
335 | unsigned int get_cpei_target_cpu(void) | |
336 | { | |
337 | return acpi_cpei_phys_cpuid; | |
338 | } | |
339 | ||
1da177e4 | 340 | static int __init |
5f3b1a8b | 341 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 342 | const unsigned long end) |
1da177e4 | 343 | { |
5f3b1a8b | 344 | struct acpi_madt_interrupt_override *p; |
1da177e4 | 345 | |
5f3b1a8b | 346 | p = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
347 | |
348 | if (BAD_MADT_ENTRY(p, end)) | |
349 | return -EINVAL; | |
350 | ||
5f3b1a8b AS |
351 | iosapic_override_isa_irq(p->source_irq, p->global_irq, |
352 | ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == | |
353 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
354 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
355 | ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
356 | ACPI_MADT_TRIGGER_EDGE) ? | |
357 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
358 | return 0; |
359 | } | |
360 | ||
1da177e4 | 361 | static int __init |
5f3b1a8b | 362 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 363 | { |
5f3b1a8b | 364 | struct acpi_madt_nmi_source *nmi_src; |
1da177e4 | 365 | |
5f3b1a8b | 366 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
367 | |
368 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
369 | return -EINVAL; | |
370 | ||
371 | /* TBD: Support nimsrc entries */ | |
372 | return 0; | |
373 | } | |
374 | ||
4be44fcd | 375 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 376 | { |
4be44fcd | 377 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
378 | |
379 | /* | |
380 | * Unfortunately ITC_DRIFT is not yet part of the | |
381 | * official SAL spec, so the ITC_DRIFT bit is not | |
382 | * set by the BIOS on this hardware. | |
383 | */ | |
384 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
385 | ||
386 | cyclone_setup(); | |
387 | } | |
388 | } | |
389 | ||
5f3b1a8b | 390 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 391 | { |
5f3b1a8b | 392 | if (!table) |
1da177e4 LT |
393 | return -EINVAL; |
394 | ||
5f3b1a8b | 395 | acpi_madt = (struct acpi_table_madt *)table; |
1da177e4 | 396 | |
55e59c51 AR |
397 | acpi_madt_rev = acpi_madt->header.revision; |
398 | ||
1da177e4 LT |
399 | /* remember the value for reference after free_initmem() */ |
400 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 401 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 | 402 | #else |
5f3b1a8b | 403 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
1da177e4 LT |
404 | #endif |
405 | iosapic_system_init(has_8259); | |
406 | ||
407 | /* Get base address of IPI Message Block */ | |
408 | ||
5f3b1a8b AS |
409 | if (acpi_madt->address) |
410 | ipi_base_addr = ioremap(acpi_madt->address, 0); | |
1da177e4 LT |
411 | |
412 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
413 | ||
414 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 415 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
416 | |
417 | return 0; | |
418 | } | |
419 | ||
1da177e4 LT |
420 | #ifdef CONFIG_ACPI_NUMA |
421 | ||
422 | #undef SLIT_DEBUG | |
423 | ||
424 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
425 | ||
4be44fcd | 426 | static int __initdata srat_num_cpus; /* number of cpus */ |
1da177e4 LT |
427 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; |
428 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
429 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 | 430 | static struct acpi_table_slit __initdata *slit_table; |
2c6e6db4 | 431 | cpumask_t early_cpu_possible_map = CPU_MASK_NONE; |
1da177e4 | 432 | |
5f3b1a8b | 433 | static int get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) |
3ad5ef8b JS |
434 | { |
435 | int pxm; | |
436 | ||
5f3b1a8b | 437 | pxm = pa->proximity_domain_lo; |
3ad5ef8b | 438 | if (ia64_platform_is("sn2")) |
5f3b1a8b | 439 | pxm += pa->proximity_domain_hi[0] << 8; |
3ad5ef8b JS |
440 | return pxm; |
441 | } | |
442 | ||
5f3b1a8b | 443 | static int get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) |
3ad5ef8b JS |
444 | { |
445 | int pxm; | |
446 | ||
447 | pxm = ma->proximity_domain; | |
defad230 AS |
448 | if (!ia64_platform_is("sn2")) |
449 | pxm &= 0xff; | |
5f3b1a8b | 450 | |
3ad5ef8b JS |
451 | return pxm; |
452 | } | |
453 | ||
1da177e4 LT |
454 | /* |
455 | * ACPI 2.0 SLIT (System Locality Information Table) | |
456 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
457 | */ | |
4be44fcd | 458 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
459 | { |
460 | u32 len; | |
461 | ||
462 | len = sizeof(struct acpi_table_header) + 8 | |
5f3b1a8b | 463 | + slit->locality_count * slit->locality_count; |
1da177e4 | 464 | if (slit->header.length != len) { |
4be44fcd LB |
465 | printk(KERN_ERR |
466 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 | 467 | len, slit->header.length); |
1da177e4 LT |
468 | return; |
469 | } | |
470 | slit_table = slit; | |
471 | } | |
472 | ||
473 | void __init | |
5f3b1a8b | 474 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
1da177e4 | 475 | { |
3ad5ef8b JS |
476 | int pxm; |
477 | ||
5f3b1a8b | 478 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
d903cea3 KK |
479 | return; |
480 | ||
3ad5ef8b JS |
481 | pxm = get_processor_proximity_domain(pa); |
482 | ||
1da177e4 | 483 | /* record this node in proximity bitmap */ |
3ad5ef8b | 484 | pxm_bit_set(pxm); |
1da177e4 | 485 | |
4be44fcd | 486 | node_cpuid[srat_num_cpus].phys_id = |
5f3b1a8b | 487 | (pa->apic_id << 8) | (pa->local_sapic_eid); |
1da177e4 | 488 | /* nid should be overridden as logical node id later */ |
3ad5ef8b | 489 | node_cpuid[srat_num_cpus].nid = pxm; |
2c6e6db4 | 490 | cpu_set(srat_num_cpus, early_cpu_possible_map); |
1da177e4 LT |
491 | srat_num_cpus++; |
492 | } | |
493 | ||
494 | void __init | |
5f3b1a8b | 495 | acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) |
1da177e4 LT |
496 | { |
497 | unsigned long paddr, size; | |
3ad5ef8b | 498 | int pxm; |
1da177e4 LT |
499 | struct node_memblk_s *p, *q, *pend; |
500 | ||
3ad5ef8b | 501 | pxm = get_memory_proximity_domain(ma); |
1da177e4 LT |
502 | |
503 | /* fill node memory chunk structure */ | |
5f3b1a8b AS |
504 | paddr = ma->base_address; |
505 | size = ma->length; | |
1da177e4 LT |
506 | |
507 | /* Ignore disabled entries */ | |
5f3b1a8b | 508 | if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) |
1da177e4 LT |
509 | return; |
510 | ||
511 | /* record this node in proximity bitmap */ | |
512 | pxm_bit_set(pxm); | |
513 | ||
514 | /* Insertion sort based on base address */ | |
515 | pend = &node_memblk[num_node_memblks]; | |
516 | for (p = &node_memblk[0]; p < pend; p++) { | |
517 | if (paddr < p->start_paddr) | |
518 | break; | |
519 | } | |
520 | if (p < pend) { | |
521 | for (q = pend - 1; q >= p; q--) | |
522 | *(q + 1) = *q; | |
523 | } | |
524 | p->start_paddr = paddr; | |
525 | p->size = size; | |
526 | p->nid = pxm; | |
527 | num_node_memblks++; | |
528 | } | |
529 | ||
4be44fcd | 530 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
531 | { |
532 | int i, j, node_from, node_to; | |
533 | ||
534 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
535 | if (srat_num_cpus == 0) { | |
536 | node_set_online(0); | |
537 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
538 | return; | |
539 | } | |
540 | ||
541 | /* | |
542 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
543 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
544 | */ | |
1da177e4 LT |
545 | nodes_clear(node_online_map); |
546 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
547 | if (pxm_bit_test(i)) { | |
762834e8 | 548 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
549 | node_set_online(nid); |
550 | } | |
551 | } | |
552 | ||
553 | /* set logical node id in memory chunk structure */ | |
554 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 555 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
556 | |
557 | /* assign memory bank numbers for each chunk on each node */ | |
558 | for_each_online_node(i) { | |
559 | int bank; | |
560 | ||
561 | bank = 0; | |
562 | for (j = 0; j < num_node_memblks; j++) | |
563 | if (node_memblk[j].nid == i) | |
564 | node_memblk[j].bank = bank++; | |
565 | } | |
566 | ||
567 | /* set logical node id in cpu structure */ | |
2c6e6db4 | 568 | for_each_possible_early_cpu(i) |
762834e8 | 569 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 570 | |
4be44fcd LB |
571 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
572 | num_online_nodes()); | |
573 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
574 | num_node_memblks); | |
1da177e4 | 575 | |
39b8931b FY |
576 | if (!slit_table) { |
577 | for (i = 0; i < MAX_NUMNODES; i++) | |
578 | for (j = 0; j < MAX_NUMNODES; j++) | |
579 | node_distance(i, j) = i == j ? LOCAL_DISTANCE : | |
580 | REMOTE_DISTANCE; | |
4be44fcd | 581 | return; |
39b8931b FY |
582 | } |
583 | ||
1da177e4 | 584 | memset(numa_slit, -1, sizeof(numa_slit)); |
5f3b1a8b | 585 | for (i = 0; i < slit_table->locality_count; i++) { |
1da177e4 LT |
586 | if (!pxm_bit_test(i)) |
587 | continue; | |
762834e8 | 588 | node_from = pxm_to_node(i); |
5f3b1a8b | 589 | for (j = 0; j < slit_table->locality_count; j++) { |
1da177e4 LT |
590 | if (!pxm_bit_test(j)) |
591 | continue; | |
762834e8 | 592 | node_to = pxm_to_node(j); |
1da177e4 | 593 | node_distance(node_from, node_to) = |
5f3b1a8b | 594 | slit_table->entry[i * slit_table->locality_count + j]; |
1da177e4 LT |
595 | } |
596 | } | |
597 | ||
598 | #ifdef SLIT_DEBUG | |
599 | printk("ACPI 2.0 SLIT locality table:\n"); | |
600 | for_each_online_node(i) { | |
601 | for_each_online_node(j) | |
4be44fcd | 602 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
603 | printk("\n"); |
604 | } | |
605 | #endif | |
606 | } | |
4be44fcd | 607 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 608 | |
1f3a6a15 KK |
609 | /* |
610 | * success: return IRQ number (>=0) | |
611 | * failure: return < 0 | |
612 | */ | |
cb654695 | 613 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 | 614 | { |
3948ec94 JK |
615 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
616 | return gsi; | |
617 | ||
1da177e4 LT |
618 | if (has_8259 && gsi < 16) |
619 | return isa_irq_to_vector(gsi); | |
620 | ||
621 | return iosapic_register_intr(gsi, | |
cb654695 | 622 | (polarity == |
4be44fcd LB |
623 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
624 | IOSAPIC_POL_LOW, | |
cb654695 | 625 | (triggering == |
4be44fcd LB |
626 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
627 | IOSAPIC_LEVEL); | |
1da177e4 | 628 | } |
4be44fcd | 629 | |
4be44fcd | 630 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 | 631 | { |
72253943 JK |
632 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
633 | return; | |
634 | ||
3fb2c74e PB |
635 | if (has_8259 && gsi < 16) |
636 | return; | |
637 | ||
1da177e4 LT |
638 | iosapic_unregister_intr(gsi); |
639 | } | |
4be44fcd | 640 | |
5f3b1a8b | 641 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 LT |
642 | { |
643 | struct acpi_table_header *fadt_header; | |
cee324b1 | 644 | struct acpi_table_fadt *fadt; |
1da177e4 | 645 | |
5f3b1a8b | 646 | if (!table) |
1da177e4 LT |
647 | return -EINVAL; |
648 | ||
5f3b1a8b | 649 | fadt_header = (struct acpi_table_header *)table; |
1da177e4 | 650 | if (fadt_header->revision != 3) |
4be44fcd | 651 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 652 | |
cee324b1 | 653 | fadt = (struct acpi_table_fadt *)fadt_header; |
1da177e4 | 654 | |
cee324b1 | 655 | acpi_register_gsi(fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); |
1da177e4 LT |
656 | return 0; |
657 | } | |
658 | ||
4be44fcd | 659 | int __init acpi_boot_init(void) |
1da177e4 LT |
660 | { |
661 | ||
662 | /* | |
663 | * MADT | |
664 | * ---- | |
665 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
666 | * Note that this table provides platform SMP configuration | |
667 | * information -- the successor to MPS tables. | |
668 | */ | |
669 | ||
db2d4ccd | 670 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
671 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
672 | goto skip_madt; | |
673 | } | |
674 | ||
675 | /* Local APIC */ | |
676 | ||
4be44fcd | 677 | if (acpi_table_parse_madt |
5f3b1a8b | 678 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
4be44fcd LB |
679 | printk(KERN_ERR PREFIX |
680 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 681 | |
5f3b1a8b | 682 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, acpi_parse_lsapic, NR_CPUS) |
4be44fcd LB |
683 | < 1) |
684 | printk(KERN_ERR PREFIX | |
685 | "Error parsing MADT - no LAPIC entries\n"); | |
1da177e4 | 686 | |
5f3b1a8b | 687 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
4be44fcd | 688 | < 0) |
1da177e4 LT |
689 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
690 | ||
691 | /* I/O APIC */ | |
692 | ||
4be44fcd | 693 | if (acpi_table_parse_madt |
7f6ff62a GB |
694 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { |
695 | if (!ia64_platform_is("sn2")) | |
696 | printk(KERN_ERR PREFIX | |
697 | "Error parsing MADT - no IOSAPIC entries\n"); | |
698 | } | |
1da177e4 LT |
699 | |
700 | /* System-Level Interrupt Routing */ | |
701 | ||
4be44fcd | 702 | if (acpi_table_parse_madt |
5f3b1a8b | 703 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
4be44fcd LB |
704 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
705 | printk(KERN_ERR PREFIX | |
706 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 707 | |
4be44fcd | 708 | if (acpi_table_parse_madt |
5f3b1a8b | 709 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
4be44fcd LB |
710 | printk(KERN_ERR PREFIX |
711 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 | 712 | |
5f3b1a8b | 713 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
1da177e4 | 714 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
4be44fcd | 715 | skip_madt: |
1da177e4 LT |
716 | |
717 | /* | |
718 | * FADT says whether a legacy keyboard controller is present. | |
719 | * The FADT also contains an SCI_INT line, by which the system | |
720 | * gets interrupts such as power and sleep buttons. If it's not | |
721 | * on a Legacy interrupt, it needs to be setup. | |
722 | */ | |
db2d4ccd | 723 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
1da177e4 LT |
724 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
725 | ||
726 | #ifdef CONFIG_SMP | |
727 | if (available_cpus == 0) { | |
728 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
729 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
4be44fcd LB |
730 | smp_boot_data.cpu_phys_id[available_cpus] = |
731 | hard_smp_processor_id(); | |
732 | available_cpus = 1; /* We've got at least one of these, no? */ | |
1da177e4 LT |
733 | } |
734 | smp_boot_data.cpu_count = available_cpus; | |
735 | ||
736 | smp_build_cpu_map(); | |
737 | # ifdef CONFIG_ACPI_NUMA | |
738 | if (srat_num_cpus == 0) { | |
739 | int cpu, i = 1; | |
740 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
741 | if (smp_boot_data.cpu_phys_id[cpu] != |
742 | hard_smp_processor_id()) | |
743 | node_cpuid[i++].phys_id = | |
744 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 745 | } |
1da177e4 | 746 | # endif |
8d7e3517 TL |
747 | #endif |
748 | #ifdef CONFIG_ACPI_NUMA | |
749 | build_cpu_to_node_map(); | |
1da177e4 LT |
750 | #endif |
751 | /* Make boot-up look pretty */ | |
4be44fcd LB |
752 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, |
753 | total_cpus); | |
1da177e4 LT |
754 | return 0; |
755 | } | |
756 | ||
4be44fcd | 757 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 | 758 | { |
3c3738c8 | 759 | int tmp; |
1da177e4 LT |
760 | |
761 | if (has_8259 && gsi < 16) | |
762 | *irq = isa_irq_to_vector(gsi); | |
763 | else { | |
3c3738c8 KK |
764 | tmp = gsi_to_irq(gsi); |
765 | if (tmp == -1) | |
1da177e4 | 766 | return -1; |
3c3738c8 | 767 | *irq = tmp; |
1da177e4 LT |
768 | } |
769 | return 0; | |
770 | } | |
771 | ||
772 | /* | |
773 | * ACPI based hotplug CPU support | |
774 | */ | |
775 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
776 | static | |
efc7508c | 777 | int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
1da177e4 LT |
778 | { |
779 | #ifdef CONFIG_ACPI_NUMA | |
4be44fcd | 780 | int pxm_id; |
08992986 | 781 | int nid; |
1da177e4 LT |
782 | |
783 | pxm_id = acpi_get_pxm(handle); | |
1da177e4 | 784 | /* |
08992986 KH |
785 | * We don't have cpu-only-node hotadd. But if the system equips |
786 | * SRAT table, pxm is already found and node is ready. | |
787 | * So, just pxm_to_nid(pxm) is OK. | |
788 | * This code here is for the system which doesn't have full SRAT | |
789 | * table for possible cpus. | |
1da177e4 | 790 | */ |
08992986 | 791 | nid = acpi_map_pxm_to_node(pxm_id); |
4be44fcd | 792 | node_cpuid[cpu].phys_id = physid; |
08992986 | 793 | node_cpuid[cpu].nid = nid; |
1da177e4 | 794 | #endif |
4be44fcd | 795 | return (0); |
1da177e4 LT |
796 | } |
797 | ||
a6b14fa6 AR |
798 | int additional_cpus __initdata = -1; |
799 | ||
800 | static __init int setup_additional_cpus(char *s) | |
801 | { | |
802 | if (s) | |
803 | additional_cpus = simple_strtol(s, NULL, 0); | |
804 | ||
805 | return 0; | |
806 | } | |
807 | ||
808 | early_param("additional_cpus", setup_additional_cpus); | |
809 | ||
810 | /* | |
72fdbdce | 811 | * cpu_possible_map should be static, it cannot change as CPUs |
a6b14fa6 AR |
812 | * are onlined, or offlined. The reason is per-cpu data-structures |
813 | * are allocated by some modules at init time, and dont expect to | |
814 | * do this dynamically on cpu arrival/departure. | |
815 | * cpu_present_map on the other hand can change dynamically. | |
816 | * In case when cpu_hotplug is not compiled, then we resort to current | |
817 | * behaviour, which is cpu_possible == cpu_present. | |
818 | * - Ashok Raj | |
819 | * | |
820 | * Three ways to find out the number of additional hotplug CPUs: | |
821 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
822 | * - The user can overwrite it with additional_cpus=NUM | |
823 | * - Otherwise don't reserve additional CPUs. | |
824 | */ | |
825 | __init void prefill_possible_map(void) | |
826 | { | |
827 | int i; | |
828 | int possible, disabled_cpus; | |
829 | ||
830 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 831 | |
a6b14fa6 | 832 | if (additional_cpus == -1) { |
8f8b1138 | 833 | if (disabled_cpus > 0) |
a6b14fa6 | 834 | additional_cpus = disabled_cpus; |
8f8b1138 | 835 | else |
a6b14fa6 | 836 | additional_cpus = 0; |
8f8b1138 AR |
837 | } |
838 | ||
839 | possible = available_cpus + additional_cpus; | |
840 | ||
a6b14fa6 AR |
841 | if (possible > NR_CPUS) |
842 | possible = NR_CPUS; | |
843 | ||
844 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 845 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
846 | |
847 | for (i = 0; i < possible; i++) | |
848 | cpu_set(i, cpu_possible_map); | |
849 | } | |
850 | ||
4be44fcd | 851 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 852 | { |
4be44fcd | 853 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 854 | union acpi_object *obj; |
5f3b1a8b | 855 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 856 | cpumask_t tmp_map; |
efc7508c | 857 | int cpu, physid; |
4be44fcd | 858 | |
1da177e4 LT |
859 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
860 | return -EINVAL; | |
861 | ||
4be44fcd | 862 | if (!buffer.length || !buffer.pointer) |
1da177e4 | 863 | return -EINVAL; |
4be44fcd | 864 | |
1da177e4 | 865 | obj = buffer.pointer; |
5f3b1a8b AS |
866 | if (obj->type != ACPI_TYPE_BUFFER) |
867 | { | |
02438d87 | 868 | kfree(buffer.pointer); |
1da177e4 LT |
869 | return -EINVAL; |
870 | } | |
871 | ||
5f3b1a8b | 872 | lsapic = (struct acpi_madt_local_sapic *)obj->buffer.pointer; |
1da177e4 | 873 | |
5f3b1a8b | 874 | if ((lsapic->header.type != ACPI_MADT_TYPE_LOCAL_SAPIC) || |
965d7472 | 875 | (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))) { |
02438d87 | 876 | kfree(buffer.pointer); |
1da177e4 LT |
877 | return -EINVAL; |
878 | } | |
879 | ||
4be44fcd | 880 | physid = ((lsapic->id << 8) | (lsapic->eid)); |
1da177e4 | 881 | |
02438d87 | 882 | kfree(buffer.pointer); |
1da177e4 LT |
883 | buffer.length = ACPI_ALLOCATE_BUFFER; |
884 | buffer.pointer = NULL; | |
885 | ||
886 | cpus_complement(tmp_map, cpu_present_map); | |
887 | cpu = first_cpu(tmp_map); | |
4be44fcd | 888 | if (cpu >= NR_CPUS) |
1da177e4 LT |
889 | return -EINVAL; |
890 | ||
891 | acpi_map_cpu2node(handle, cpu, physid); | |
892 | ||
4be44fcd | 893 | cpu_set(cpu, cpu_present_map); |
1da177e4 | 894 | ia64_cpu_to_sapicid[cpu] = physid; |
1da177e4 LT |
895 | |
896 | *pcpu = cpu; | |
4be44fcd | 897 | return (0); |
1da177e4 | 898 | } |
1da177e4 | 899 | |
4be44fcd | 900 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 901 | |
4be44fcd | 902 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 903 | { |
1da177e4 | 904 | ia64_cpu_to_sapicid[cpu] = -1; |
4be44fcd | 905 | cpu_clear(cpu, cpu_present_map); |
1da177e4 LT |
906 | |
907 | #ifdef CONFIG_ACPI_NUMA | |
908 | /* NUMA specific cleanup's */ | |
909 | #endif | |
910 | ||
4be44fcd | 911 | return (0); |
1da177e4 | 912 | } |
4be44fcd | 913 | |
1da177e4 | 914 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 915 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 LT |
916 | |
917 | #ifdef CONFIG_ACPI_NUMA | |
650316f1 | 918 | static acpi_status __devinit |
4be44fcd | 919 | acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) |
1da177e4 | 920 | { |
4be44fcd | 921 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 922 | union acpi_object *obj; |
5f3b1a8b | 923 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 924 | unsigned int gsi_base; |
bb0fc085 | 925 | int pxm, node; |
1da177e4 LT |
926 | |
927 | /* Only care about objects w/ a method that returns the MADT */ | |
928 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
929 | return AE_OK; | |
930 | ||
931 | if (!buffer.length || !buffer.pointer) | |
932 | return AE_OK; | |
933 | ||
934 | obj = buffer.pointer; | |
935 | if (obj->type != ACPI_TYPE_BUFFER || | |
936 | obj->buffer.length < sizeof(*iosapic)) { | |
02438d87 | 937 | kfree(buffer.pointer); |
1da177e4 LT |
938 | return AE_OK; |
939 | } | |
940 | ||
5f3b1a8b | 941 | iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; |
1da177e4 | 942 | |
5f3b1a8b | 943 | if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { |
02438d87 | 944 | kfree(buffer.pointer); |
1da177e4 LT |
945 | return AE_OK; |
946 | } | |
947 | ||
948 | gsi_base = iosapic->global_irq_base; | |
949 | ||
02438d87 | 950 | kfree(buffer.pointer); |
1da177e4 LT |
951 | |
952 | /* | |
bb0fc085 | 953 | * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell |
1da177e4 LT |
954 | * us which node to associate this with. |
955 | */ | |
bb0fc085 AW |
956 | pxm = acpi_get_pxm(handle); |
957 | if (pxm < 0) | |
1da177e4 | 958 | return AE_OK; |
1da177e4 | 959 | |
762834e8 | 960 | node = pxm_to_node(pxm); |
1da177e4 LT |
961 | |
962 | if (node >= MAX_NUMNODES || !node_online(node) || | |
963 | cpus_empty(node_to_cpumask(node))) | |
964 | return AE_OK; | |
965 | ||
966 | /* We know a gsi to node mapping! */ | |
967 | map_iosapic_to_node(gsi_base, node); | |
968 | return AE_OK; | |
969 | } | |
650316f1 BH |
970 | |
971 | static int __init | |
972 | acpi_map_iosapics (void) | |
973 | { | |
974 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); | |
975 | return 0; | |
976 | } | |
977 | ||
978 | fs_initcall(acpi_map_iosapics); | |
979 | #endif /* CONFIG_ACPI_NUMA */ | |
b1bb248a | 980 | |
c5b5a599 | 981 | int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a | 982 | { |
0e888adc KK |
983 | int err; |
984 | ||
985 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
986 | return err; | |
987 | ||
24b8e0cc | 988 | #ifdef CONFIG_ACPI_NUMA |
0e888adc | 989 | acpi_map_iosapic(handle, 0, NULL, NULL); |
4be44fcd | 990 | #endif /* CONFIG_ACPI_NUMA */ |
0e888adc KK |
991 | |
992 | return 0; | |
b1bb248a | 993 | } |
4be44fcd | 994 | |
b1bb248a KK |
995 | EXPORT_SYMBOL(acpi_register_ioapic); |
996 | ||
4be44fcd | 997 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a | 998 | { |
0e888adc | 999 | return iosapic_remove(gsi_base); |
b1bb248a | 1000 | } |
4be44fcd | 1001 | |
b1bb248a KK |
1002 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
1003 | ||
e8b2fd01 LB |
1004 | /* |
1005 | * acpi_save_state_mem() - save kernel state | |
1006 | * | |
1007 | * TBD when when IA64 starts to support suspend... | |
1008 | */ | |
1009 | int acpi_save_state_mem(void) { return 0; } | |
1010 | ||
1011 | /* | |
1012 | * acpi_restore_state() | |
1013 | */ | |
1014 | void acpi_restore_state_mem(void) {} | |
1015 | ||
1016 | /* | |
1017 | * do_suspend_lowlevel() | |
1018 | */ | |
1019 | void do_suspend_lowlevel(void) {} | |
1020 | ||
888ba6c6 | 1021 | #endif /* CONFIG_ACPI */ |