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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 || \ | |
58 | ((acpi_table_entry_header *)entry)->length != sizeof(*entry)) | |
59 | ||
60 | #define PREFIX "ACPI: " | |
61 | ||
62 | void (*pm_idle) (void); | |
63 | EXPORT_SYMBOL(pm_idle); | |
64 | void (*pm_power_off) (void); | |
65 | EXPORT_SYMBOL(pm_power_off); | |
66 | ||
67 | unsigned char acpi_kbd_controller_present = 1; | |
68 | unsigned char acpi_legacy_devices; | |
69 | ||
55e59c51 AR |
70 | unsigned int acpi_cpei_override; |
71 | unsigned int acpi_cpei_phys_cpuid; | |
72 | ||
1da177e4 | 73 | #define MAX_SAPICS 256 |
702c7e76 | 74 | u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = {[0 ... MAX_SAPICS - 1] = -1 }; |
4be44fcd | 75 | |
1da177e4 LT |
76 | EXPORT_SYMBOL(ia64_acpiid_to_sapicid); |
77 | ||
4be44fcd | 78 | const char *acpi_get_sysname(void) |
1da177e4 LT |
79 | { |
80 | #ifdef CONFIG_IA64_GENERIC | |
81 | unsigned long rsdp_phys; | |
82 | struct acpi20_table_rsdp *rsdp; | |
83 | struct acpi_table_xsdt *xsdt; | |
84 | struct acpi_table_header *hdr; | |
85 | ||
86 | rsdp_phys = acpi_find_rsdp(); | |
87 | if (!rsdp_phys) { | |
4be44fcd LB |
88 | printk(KERN_ERR |
89 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
1da177e4 LT |
90 | return "dig"; |
91 | } | |
92 | ||
4be44fcd | 93 | rsdp = (struct acpi20_table_rsdp *)__va(rsdp_phys); |
1da177e4 | 94 | if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) { |
4be44fcd LB |
95 | printk(KERN_ERR |
96 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
97 | return "dig"; |
98 | } | |
99 | ||
4be44fcd | 100 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_address); |
1da177e4 LT |
101 | hdr = &xsdt->header; |
102 | if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) { | |
4be44fcd LB |
103 | printk(KERN_ERR |
104 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
105 | return "dig"; |
106 | } | |
107 | ||
108 | if (!strcmp(hdr->oem_id, "HP")) { | |
109 | return "hpzx1"; | |
4be44fcd | 110 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
1da177e4 LT |
111 | return "sn2"; |
112 | } | |
113 | ||
114 | return "dig"; | |
115 | #else | |
116 | # if defined (CONFIG_IA64_HP_SIM) | |
117 | return "hpsim"; | |
118 | # elif defined (CONFIG_IA64_HP_ZX1) | |
119 | return "hpzx1"; | |
120 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
121 | return "hpzx1_swiotlb"; | |
122 | # elif defined (CONFIG_IA64_SGI_SN2) | |
123 | return "sn2"; | |
124 | # elif defined (CONFIG_IA64_DIG) | |
125 | return "dig"; | |
126 | # else | |
127 | # error Unknown platform. Fix acpi.c. | |
128 | # endif | |
129 | #endif | |
130 | } | |
131 | ||
888ba6c6 | 132 | #ifdef CONFIG_ACPI |
1da177e4 LT |
133 | |
134 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
135 | ||
136 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
137 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
138 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
139 | }; | |
140 | ||
141 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
142 | ||
143 | /* | |
144 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
145 | * a generic platform event. Currently only CPEI is implemented. | |
146 | */ | |
4be44fcd | 147 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
148 | { |
149 | int vector = -1; | |
150 | ||
151 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
152 | /* corrected platform error interrupt */ | |
153 | vector = platform_intr_list[int_type]; | |
154 | } else | |
4be44fcd LB |
155 | printk(KERN_ERR |
156 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
157 | return vector; |
158 | } | |
159 | ||
4be44fcd | 160 | char *__acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
161 | { |
162 | return __va(phys_addr); | |
163 | } | |
164 | ||
165 | /* -------------------------------------------------------------------------- | |
166 | Boot-time Table Parsing | |
167 | -------------------------------------------------------------------------- */ | |
168 | ||
4be44fcd LB |
169 | static int total_cpus __initdata; |
170 | static int available_cpus __initdata; | |
171 | struct acpi_table_madt *acpi_madt __initdata; | |
172 | static u8 has_8259; | |
1da177e4 LT |
173 | |
174 | static int __init | |
4be44fcd LB |
175 | acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header, |
176 | const unsigned long end) | |
1da177e4 LT |
177 | { |
178 | struct acpi_table_lapic_addr_ovr *lapic; | |
179 | ||
4be44fcd | 180 | lapic = (struct acpi_table_lapic_addr_ovr *)header; |
1da177e4 LT |
181 | |
182 | if (BAD_MADT_ENTRY(lapic, end)) | |
183 | return -EINVAL; | |
184 | ||
185 | if (lapic->address) { | |
186 | iounmap(ipi_base_addr); | |
187 | ipi_base_addr = ioremap(lapic->address, 0); | |
188 | } | |
189 | return 0; | |
190 | } | |
191 | ||
1da177e4 | 192 | static int __init |
4be44fcd | 193 | acpi_parse_lsapic(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
194 | { |
195 | struct acpi_table_lsapic *lsapic; | |
196 | ||
4be44fcd | 197 | lsapic = (struct acpi_table_lsapic *)header; |
1da177e4 LT |
198 | |
199 | if (BAD_MADT_ENTRY(lsapic, end)) | |
200 | return -EINVAL; | |
201 | ||
202 | if (lsapic->flags.enabled) { | |
203 | #ifdef CONFIG_SMP | |
4be44fcd LB |
204 | smp_boot_data.cpu_phys_id[available_cpus] = |
205 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 206 | #endif |
4be44fcd LB |
207 | ia64_acpiid_to_sapicid[lsapic->acpi_id] = |
208 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 LT |
209 | ++available_cpus; |
210 | } | |
211 | ||
212 | total_cpus++; | |
213 | return 0; | |
214 | } | |
215 | ||
1da177e4 | 216 | static int __init |
4be44fcd | 217 | acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
218 | { |
219 | struct acpi_table_lapic_nmi *lacpi_nmi; | |
220 | ||
4be44fcd | 221 | lacpi_nmi = (struct acpi_table_lapic_nmi *)header; |
1da177e4 LT |
222 | |
223 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
224 | return -EINVAL; | |
225 | ||
226 | /* TBD: Support lapic_nmi entries */ | |
227 | return 0; | |
228 | } | |
229 | ||
1da177e4 | 230 | static int __init |
4be44fcd | 231 | acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
232 | { |
233 | struct acpi_table_iosapic *iosapic; | |
234 | ||
4be44fcd | 235 | iosapic = (struct acpi_table_iosapic *)header; |
1da177e4 LT |
236 | |
237 | if (BAD_MADT_ENTRY(iosapic, end)) | |
238 | return -EINVAL; | |
239 | ||
0e888adc | 240 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
241 | } |
242 | ||
5810452d LB |
243 | static unsigned int __initdata acpi_madt_rev; |
244 | ||
1da177e4 | 245 | static int __init |
4be44fcd LB |
246 | acpi_parse_plat_int_src(acpi_table_entry_header * header, |
247 | const unsigned long end) | |
1da177e4 LT |
248 | { |
249 | struct acpi_table_plat_int_src *plintsrc; | |
250 | int vector; | |
251 | ||
4be44fcd | 252 | plintsrc = (struct acpi_table_plat_int_src *)header; |
1da177e4 LT |
253 | |
254 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
255 | return -EINVAL; | |
256 | ||
257 | /* | |
258 | * Get vector assignment for this interrupt, set attributes, | |
259 | * and program the IOSAPIC routing table. | |
260 | */ | |
261 | vector = iosapic_register_platform_intr(plintsrc->type, | |
262 | plintsrc->global_irq, | |
263 | plintsrc->iosapic_vector, | |
264 | plintsrc->eid, | |
265 | plintsrc->id, | |
4be44fcd LB |
266 | (plintsrc->flags.polarity == |
267 | 1) ? IOSAPIC_POL_HIGH : | |
268 | IOSAPIC_POL_LOW, | |
269 | (plintsrc->flags.trigger == | |
270 | 1) ? IOSAPIC_EDGE : | |
271 | IOSAPIC_LEVEL); | |
1da177e4 LT |
272 | |
273 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 AR |
274 | if (acpi_madt_rev > 1) { |
275 | acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag; | |
276 | } | |
277 | ||
278 | /* | |
279 | * Save the physical id, so we can check when its being removed | |
280 | */ | |
281 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
282 | ||
1da177e4 LT |
283 | return 0; |
284 | } | |
285 | ||
b88e9265 | 286 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
287 | unsigned int can_cpei_retarget(void) |
288 | { | |
289 | extern int cpe_vector; | |
ff741906 | 290 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
291 | |
292 | /* | |
293 | * Only if CPEI is supported and the override flag | |
294 | * is present, otherwise return that its re-targettable | |
295 | * if we are in polling mode. | |
296 | */ | |
ff741906 AR |
297 | if (cpe_vector > 0) { |
298 | if (acpi_cpei_override || force_cpei_retarget) | |
299 | return 1; | |
300 | else | |
301 | return 0; | |
302 | } | |
303 | return 1; | |
55e59c51 AR |
304 | } |
305 | ||
306 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
307 | { | |
308 | unsigned int logical_id; | |
309 | ||
310 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
311 | ||
312 | if (logical_id == cpu) | |
313 | return 1; | |
314 | else | |
315 | return 0; | |
316 | } | |
317 | ||
318 | void set_cpei_target_cpu(unsigned int cpu) | |
319 | { | |
320 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
321 | } | |
b88e9265 | 322 | #endif |
55e59c51 AR |
323 | |
324 | unsigned int get_cpei_target_cpu(void) | |
325 | { | |
326 | return acpi_cpei_phys_cpuid; | |
327 | } | |
328 | ||
1da177e4 | 329 | static int __init |
4be44fcd LB |
330 | acpi_parse_int_src_ovr(acpi_table_entry_header * header, |
331 | const unsigned long end) | |
1da177e4 LT |
332 | { |
333 | struct acpi_table_int_src_ovr *p; | |
334 | ||
4be44fcd | 335 | p = (struct acpi_table_int_src_ovr *)header; |
1da177e4 LT |
336 | |
337 | if (BAD_MADT_ENTRY(p, end)) | |
338 | return -EINVAL; | |
339 | ||
340 | iosapic_override_isa_irq(p->bus_irq, p->global_irq, | |
4be44fcd LB |
341 | (p->flags.polarity == |
342 | 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
343 | (p->flags.trigger == | |
344 | 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
345 | return 0; |
346 | } | |
347 | ||
1da177e4 | 348 | static int __init |
4be44fcd | 349 | acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
350 | { |
351 | struct acpi_table_nmi_src *nmi_src; | |
352 | ||
4be44fcd | 353 | nmi_src = (struct acpi_table_nmi_src *)header; |
1da177e4 LT |
354 | |
355 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
356 | return -EINVAL; | |
357 | ||
358 | /* TBD: Support nimsrc entries */ | |
359 | return 0; | |
360 | } | |
361 | ||
4be44fcd | 362 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 363 | { |
4be44fcd | 364 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
365 | |
366 | /* | |
367 | * Unfortunately ITC_DRIFT is not yet part of the | |
368 | * official SAL spec, so the ITC_DRIFT bit is not | |
369 | * set by the BIOS on this hardware. | |
370 | */ | |
371 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
372 | ||
373 | cyclone_setup(); | |
374 | } | |
375 | } | |
376 | ||
4be44fcd | 377 | static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
378 | { |
379 | if (!phys_addr || !size) | |
380 | return -EINVAL; | |
381 | ||
4be44fcd | 382 | acpi_madt = (struct acpi_table_madt *)__va(phys_addr); |
1da177e4 | 383 | |
55e59c51 AR |
384 | acpi_madt_rev = acpi_madt->header.revision; |
385 | ||
1da177e4 LT |
386 | /* remember the value for reference after free_initmem() */ |
387 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 388 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 LT |
389 | #else |
390 | has_8259 = acpi_madt->flags.pcat_compat; | |
391 | #endif | |
392 | iosapic_system_init(has_8259); | |
393 | ||
394 | /* Get base address of IPI Message Block */ | |
395 | ||
396 | if (acpi_madt->lapic_address) | |
397 | ipi_base_addr = ioremap(acpi_madt->lapic_address, 0); | |
398 | ||
399 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
400 | ||
401 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 402 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
403 | |
404 | return 0; | |
405 | } | |
406 | ||
1da177e4 LT |
407 | #ifdef CONFIG_ACPI_NUMA |
408 | ||
409 | #undef SLIT_DEBUG | |
410 | ||
411 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
412 | ||
4be44fcd | 413 | static int __initdata srat_num_cpus; /* number of cpus */ |
1da177e4 LT |
414 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; |
415 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
416 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 LT |
417 | static struct acpi_table_slit __initdata *slit_table; |
418 | ||
3ad5ef8b JS |
419 | static int get_processor_proximity_domain(struct acpi_table_processor_affinity *pa) |
420 | { | |
421 | int pxm; | |
422 | ||
423 | pxm = pa->proximity_domain; | |
424 | if (ia64_platform_is("sn2")) | |
425 | pxm += pa->reserved[0] << 8; | |
426 | return pxm; | |
427 | } | |
428 | ||
429 | static int get_memory_proximity_domain(struct acpi_table_memory_affinity *ma) | |
430 | { | |
431 | int pxm; | |
432 | ||
433 | pxm = ma->proximity_domain; | |
434 | if (ia64_platform_is("sn2")) | |
435 | pxm += ma->reserved1[0] << 8; | |
436 | return pxm; | |
437 | } | |
438 | ||
1da177e4 LT |
439 | /* |
440 | * ACPI 2.0 SLIT (System Locality Information Table) | |
441 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
442 | */ | |
4be44fcd | 443 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
444 | { |
445 | u32 len; | |
446 | ||
447 | len = sizeof(struct acpi_table_header) + 8 | |
4be44fcd | 448 | + slit->localities * slit->localities; |
1da177e4 | 449 | if (slit->header.length != len) { |
4be44fcd LB |
450 | printk(KERN_ERR |
451 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 LT |
452 | len, slit->header.length); |
453 | memset(numa_slit, 10, sizeof(numa_slit)); | |
454 | return; | |
455 | } | |
456 | slit_table = slit; | |
457 | } | |
458 | ||
459 | void __init | |
4be44fcd | 460 | acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa) |
1da177e4 | 461 | { |
3ad5ef8b JS |
462 | int pxm; |
463 | ||
d903cea3 KK |
464 | if (!pa->flags.enabled) |
465 | return; | |
466 | ||
3ad5ef8b JS |
467 | pxm = get_processor_proximity_domain(pa); |
468 | ||
1da177e4 | 469 | /* record this node in proximity bitmap */ |
3ad5ef8b | 470 | pxm_bit_set(pxm); |
1da177e4 | 471 | |
4be44fcd LB |
472 | node_cpuid[srat_num_cpus].phys_id = |
473 | (pa->apic_id << 8) | (pa->lsapic_eid); | |
1da177e4 | 474 | /* nid should be overridden as logical node id later */ |
3ad5ef8b | 475 | node_cpuid[srat_num_cpus].nid = pxm; |
1da177e4 LT |
476 | srat_num_cpus++; |
477 | } | |
478 | ||
479 | void __init | |
4be44fcd | 480 | acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma) |
1da177e4 LT |
481 | { |
482 | unsigned long paddr, size; | |
3ad5ef8b | 483 | int pxm; |
1da177e4 LT |
484 | struct node_memblk_s *p, *q, *pend; |
485 | ||
3ad5ef8b | 486 | pxm = get_memory_proximity_domain(ma); |
1da177e4 LT |
487 | |
488 | /* fill node memory chunk structure */ | |
489 | paddr = ma->base_addr_hi; | |
490 | paddr = (paddr << 32) | ma->base_addr_lo; | |
491 | size = ma->length_hi; | |
492 | size = (size << 32) | ma->length_lo; | |
493 | ||
494 | /* Ignore disabled entries */ | |
495 | if (!ma->flags.enabled) | |
496 | return; | |
497 | ||
498 | /* record this node in proximity bitmap */ | |
499 | pxm_bit_set(pxm); | |
500 | ||
501 | /* Insertion sort based on base address */ | |
502 | pend = &node_memblk[num_node_memblks]; | |
503 | for (p = &node_memblk[0]; p < pend; p++) { | |
504 | if (paddr < p->start_paddr) | |
505 | break; | |
506 | } | |
507 | if (p < pend) { | |
508 | for (q = pend - 1; q >= p; q--) | |
509 | *(q + 1) = *q; | |
510 | } | |
511 | p->start_paddr = paddr; | |
512 | p->size = size; | |
513 | p->nid = pxm; | |
514 | num_node_memblks++; | |
515 | } | |
516 | ||
4be44fcd | 517 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
518 | { |
519 | int i, j, node_from, node_to; | |
520 | ||
521 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
522 | if (srat_num_cpus == 0) { | |
523 | node_set_online(0); | |
524 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
525 | return; | |
526 | } | |
527 | ||
528 | /* | |
529 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
530 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
531 | */ | |
1da177e4 LT |
532 | nodes_clear(node_online_map); |
533 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
534 | if (pxm_bit_test(i)) { | |
762834e8 | 535 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
536 | node_set_online(nid); |
537 | } | |
538 | } | |
539 | ||
540 | /* set logical node id in memory chunk structure */ | |
541 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 542 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
543 | |
544 | /* assign memory bank numbers for each chunk on each node */ | |
545 | for_each_online_node(i) { | |
546 | int bank; | |
547 | ||
548 | bank = 0; | |
549 | for (j = 0; j < num_node_memblks; j++) | |
550 | if (node_memblk[j].nid == i) | |
551 | node_memblk[j].bank = bank++; | |
552 | } | |
553 | ||
554 | /* set logical node id in cpu structure */ | |
555 | for (i = 0; i < srat_num_cpus; i++) | |
762834e8 | 556 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 557 | |
4be44fcd LB |
558 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
559 | num_online_nodes()); | |
560 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
561 | num_node_memblks); | |
1da177e4 | 562 | |
4be44fcd LB |
563 | if (!slit_table) |
564 | return; | |
1da177e4 | 565 | memset(numa_slit, -1, sizeof(numa_slit)); |
4be44fcd | 566 | for (i = 0; i < slit_table->localities; i++) { |
1da177e4 LT |
567 | if (!pxm_bit_test(i)) |
568 | continue; | |
762834e8 | 569 | node_from = pxm_to_node(i); |
4be44fcd | 570 | for (j = 0; j < slit_table->localities; j++) { |
1da177e4 LT |
571 | if (!pxm_bit_test(j)) |
572 | continue; | |
762834e8 | 573 | node_to = pxm_to_node(j); |
1da177e4 | 574 | node_distance(node_from, node_to) = |
4be44fcd | 575 | slit_table->entry[i * slit_table->localities + j]; |
1da177e4 LT |
576 | } |
577 | } | |
578 | ||
579 | #ifdef SLIT_DEBUG | |
580 | printk("ACPI 2.0 SLIT locality table:\n"); | |
581 | for_each_online_node(i) { | |
582 | for_each_online_node(j) | |
4be44fcd | 583 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
584 | printk("\n"); |
585 | } | |
586 | #endif | |
587 | } | |
4be44fcd | 588 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 589 | |
1f3a6a15 KK |
590 | /* |
591 | * success: return IRQ number (>=0) | |
592 | * failure: return < 0 | |
593 | */ | |
cb654695 | 594 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 LT |
595 | { |
596 | if (has_8259 && gsi < 16) | |
597 | return isa_irq_to_vector(gsi); | |
598 | ||
599 | return iosapic_register_intr(gsi, | |
cb654695 | 600 | (polarity == |
4be44fcd LB |
601 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
602 | IOSAPIC_POL_LOW, | |
cb654695 | 603 | (triggering == |
4be44fcd LB |
604 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
605 | IOSAPIC_LEVEL); | |
1da177e4 | 606 | } |
4be44fcd | 607 | |
1da177e4 LT |
608 | EXPORT_SYMBOL(acpi_register_gsi); |
609 | ||
4be44fcd | 610 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 LT |
611 | { |
612 | iosapic_unregister_intr(gsi); | |
613 | } | |
4be44fcd | 614 | |
1da177e4 | 615 | EXPORT_SYMBOL(acpi_unregister_gsi); |
1da177e4 | 616 | |
4be44fcd | 617 | static int __init acpi_parse_fadt(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
618 | { |
619 | struct acpi_table_header *fadt_header; | |
236ee8c3 | 620 | struct fadt_descriptor *fadt; |
1da177e4 LT |
621 | |
622 | if (!phys_addr || !size) | |
623 | return -EINVAL; | |
624 | ||
4be44fcd | 625 | fadt_header = (struct acpi_table_header *)__va(phys_addr); |
1da177e4 | 626 | if (fadt_header->revision != 3) |
4be44fcd | 627 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 628 | |
236ee8c3 | 629 | fadt = (struct fadt_descriptor *)fadt_header; |
1da177e4 LT |
630 | |
631 | if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER)) | |
632 | acpi_kbd_controller_present = 0; | |
633 | ||
634 | if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES) | |
635 | acpi_legacy_devices = 1; | |
636 | ||
637 | acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); | |
638 | return 0; | |
639 | } | |
640 | ||
4be44fcd | 641 | unsigned long __init acpi_find_rsdp(void) |
1da177e4 LT |
642 | { |
643 | unsigned long rsdp_phys = 0; | |
644 | ||
b2c99e3c BH |
645 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
646 | rsdp_phys = efi.acpi20; | |
647 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
4be44fcd LB |
648 | printk(KERN_WARNING PREFIX |
649 | "v1.0/r0.71 tables no longer supported\n"); | |
1da177e4 LT |
650 | return rsdp_phys; |
651 | } | |
652 | ||
4be44fcd | 653 | int __init acpi_boot_init(void) |
1da177e4 LT |
654 | { |
655 | ||
656 | /* | |
657 | * MADT | |
658 | * ---- | |
659 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
660 | * Note that this table provides platform SMP configuration | |
661 | * information -- the successor to MPS tables. | |
662 | */ | |
663 | ||
664 | if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) { | |
665 | printk(KERN_ERR PREFIX "Can't find MADT\n"); | |
666 | goto skip_madt; | |
667 | } | |
668 | ||
669 | /* Local APIC */ | |
670 | ||
4be44fcd LB |
671 | if (acpi_table_parse_madt |
672 | (ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0) | |
673 | printk(KERN_ERR PREFIX | |
674 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 675 | |
4be44fcd LB |
676 | if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) |
677 | < 1) | |
678 | printk(KERN_ERR PREFIX | |
679 | "Error parsing MADT - no LAPIC entries\n"); | |
1da177e4 | 680 | |
4be44fcd LB |
681 | if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) |
682 | < 0) | |
1da177e4 LT |
683 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
684 | ||
685 | /* I/O APIC */ | |
686 | ||
4be44fcd LB |
687 | if (acpi_table_parse_madt |
688 | (ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) | |
689 | printk(KERN_ERR PREFIX | |
690 | "Error parsing MADT - no IOSAPIC entries\n"); | |
1da177e4 LT |
691 | |
692 | /* System-Level Interrupt Routing */ | |
693 | ||
4be44fcd LB |
694 | if (acpi_table_parse_madt |
695 | (ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, | |
696 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) | |
697 | printk(KERN_ERR PREFIX | |
698 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 699 | |
4be44fcd LB |
700 | if (acpi_table_parse_madt |
701 | (ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0) | |
702 | printk(KERN_ERR PREFIX | |
703 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
704 | |
705 | if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0) | |
706 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
4be44fcd | 707 | skip_madt: |
1da177e4 LT |
708 | |
709 | /* | |
710 | * FADT says whether a legacy keyboard controller is present. | |
711 | * The FADT also contains an SCI_INT line, by which the system | |
712 | * gets interrupts such as power and sleep buttons. If it's not | |
713 | * on a Legacy interrupt, it needs to be setup. | |
714 | */ | |
715 | if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1) | |
716 | printk(KERN_ERR PREFIX "Can't find FADT\n"); | |
717 | ||
718 | #ifdef CONFIG_SMP | |
719 | if (available_cpus == 0) { | |
720 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
721 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
4be44fcd LB |
722 | smp_boot_data.cpu_phys_id[available_cpus] = |
723 | hard_smp_processor_id(); | |
724 | available_cpus = 1; /* We've got at least one of these, no? */ | |
1da177e4 LT |
725 | } |
726 | smp_boot_data.cpu_count = available_cpus; | |
727 | ||
728 | smp_build_cpu_map(); | |
729 | # ifdef CONFIG_ACPI_NUMA | |
730 | if (srat_num_cpus == 0) { | |
731 | int cpu, i = 1; | |
732 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
733 | if (smp_boot_data.cpu_phys_id[cpu] != |
734 | hard_smp_processor_id()) | |
735 | node_cpuid[i++].phys_id = | |
736 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 737 | } |
1da177e4 | 738 | # endif |
8d7e3517 TL |
739 | #endif |
740 | #ifdef CONFIG_ACPI_NUMA | |
741 | build_cpu_to_node_map(); | |
1da177e4 LT |
742 | #endif |
743 | /* Make boot-up look pretty */ | |
4be44fcd LB |
744 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, |
745 | total_cpus); | |
1da177e4 LT |
746 | return 0; |
747 | } | |
748 | ||
4be44fcd | 749 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 LT |
750 | { |
751 | int vector; | |
752 | ||
753 | if (has_8259 && gsi < 16) | |
754 | *irq = isa_irq_to_vector(gsi); | |
755 | else { | |
756 | vector = gsi_to_vector(gsi); | |
757 | if (vector == -1) | |
758 | return -1; | |
759 | ||
760 | *irq = vector; | |
761 | } | |
762 | return 0; | |
763 | } | |
764 | ||
765 | /* | |
766 | * ACPI based hotplug CPU support | |
767 | */ | |
768 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
769 | static | |
4be44fcd | 770 | int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) |
1da177e4 LT |
771 | { |
772 | #ifdef CONFIG_ACPI_NUMA | |
4be44fcd | 773 | int pxm_id; |
1da177e4 LT |
774 | |
775 | pxm_id = acpi_get_pxm(handle); | |
776 | ||
777 | /* | |
778 | * Assuming that the container driver would have set the proximity | |
762834e8 | 779 | * domain and would have initialized pxm_to_node(pxm_id) && pxm_flag |
1da177e4 | 780 | */ |
762834e8 | 781 | node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_node(pxm_id); |
1da177e4 | 782 | |
4be44fcd | 783 | node_cpuid[cpu].phys_id = physid; |
1da177e4 | 784 | #endif |
4be44fcd | 785 | return (0); |
1da177e4 LT |
786 | } |
787 | ||
a6b14fa6 AR |
788 | int additional_cpus __initdata = -1; |
789 | ||
790 | static __init int setup_additional_cpus(char *s) | |
791 | { | |
792 | if (s) | |
793 | additional_cpus = simple_strtol(s, NULL, 0); | |
794 | ||
795 | return 0; | |
796 | } | |
797 | ||
798 | early_param("additional_cpus", setup_additional_cpus); | |
799 | ||
800 | /* | |
801 | * cpu_possible_map should be static, it cannot change as cpu's | |
802 | * are onlined, or offlined. The reason is per-cpu data-structures | |
803 | * are allocated by some modules at init time, and dont expect to | |
804 | * do this dynamically on cpu arrival/departure. | |
805 | * cpu_present_map on the other hand can change dynamically. | |
806 | * In case when cpu_hotplug is not compiled, then we resort to current | |
807 | * behaviour, which is cpu_possible == cpu_present. | |
808 | * - Ashok Raj | |
809 | * | |
810 | * Three ways to find out the number of additional hotplug CPUs: | |
811 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
812 | * - The user can overwrite it with additional_cpus=NUM | |
813 | * - Otherwise don't reserve additional CPUs. | |
814 | */ | |
815 | __init void prefill_possible_map(void) | |
816 | { | |
817 | int i; | |
818 | int possible, disabled_cpus; | |
819 | ||
820 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 821 | |
a6b14fa6 | 822 | if (additional_cpus == -1) { |
8f8b1138 | 823 | if (disabled_cpus > 0) |
a6b14fa6 | 824 | additional_cpus = disabled_cpus; |
8f8b1138 | 825 | else |
a6b14fa6 | 826 | additional_cpus = 0; |
8f8b1138 AR |
827 | } |
828 | ||
829 | possible = available_cpus + additional_cpus; | |
830 | ||
a6b14fa6 AR |
831 | if (possible > NR_CPUS) |
832 | possible = NR_CPUS; | |
833 | ||
834 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 835 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
836 | |
837 | for (i = 0; i < possible; i++) | |
838 | cpu_set(i, cpu_possible_map); | |
839 | } | |
840 | ||
4be44fcd | 841 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 842 | { |
4be44fcd | 843 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 LT |
844 | union acpi_object *obj; |
845 | struct acpi_table_lsapic *lsapic; | |
846 | cpumask_t tmp_map; | |
847 | long physid; | |
848 | int cpu; | |
4be44fcd | 849 | |
1da177e4 LT |
850 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
851 | return -EINVAL; | |
852 | ||
4be44fcd | 853 | if (!buffer.length || !buffer.pointer) |
1da177e4 | 854 | return -EINVAL; |
4be44fcd | 855 | |
1da177e4 LT |
856 | obj = buffer.pointer; |
857 | if (obj->type != ACPI_TYPE_BUFFER || | |
858 | obj->buffer.length < sizeof(*lsapic)) { | |
859 | acpi_os_free(buffer.pointer); | |
860 | return -EINVAL; | |
861 | } | |
862 | ||
863 | lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer; | |
864 | ||
865 | if ((lsapic->header.type != ACPI_MADT_LSAPIC) || | |
866 | (!lsapic->flags.enabled)) { | |
867 | acpi_os_free(buffer.pointer); | |
868 | return -EINVAL; | |
869 | } | |
870 | ||
4be44fcd | 871 | physid = ((lsapic->id << 8) | (lsapic->eid)); |
1da177e4 LT |
872 | |
873 | acpi_os_free(buffer.pointer); | |
874 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
875 | buffer.pointer = NULL; | |
876 | ||
877 | cpus_complement(tmp_map, cpu_present_map); | |
878 | cpu = first_cpu(tmp_map); | |
4be44fcd | 879 | if (cpu >= NR_CPUS) |
1da177e4 LT |
880 | return -EINVAL; |
881 | ||
882 | acpi_map_cpu2node(handle, cpu, physid); | |
883 | ||
4be44fcd | 884 | cpu_set(cpu, cpu_present_map); |
1da177e4 LT |
885 | ia64_cpu_to_sapicid[cpu] = physid; |
886 | ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu]; | |
887 | ||
888 | *pcpu = cpu; | |
4be44fcd | 889 | return (0); |
1da177e4 | 890 | } |
1da177e4 | 891 | |
4be44fcd | 892 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 893 | |
4be44fcd | 894 | int acpi_unmap_lsapic(int cpu) |
1da177e4 LT |
895 | { |
896 | int i; | |
897 | ||
4be44fcd LB |
898 | for (i = 0; i < MAX_SAPICS; i++) { |
899 | if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) { | |
900 | ia64_acpiid_to_sapicid[i] = -1; | |
901 | break; | |
902 | } | |
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 LT |
922 | union acpi_object *obj; |
923 | struct acpi_table_iosapic *iosapic; | |
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)) { | |
937 | acpi_os_free(buffer.pointer); | |
938 | return AE_OK; | |
939 | } | |
940 | ||
941 | iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer; | |
942 | ||
943 | if (iosapic->header.type != ACPI_MADT_IOSAPIC) { | |
944 | acpi_os_free(buffer.pointer); | |
945 | return AE_OK; | |
946 | } | |
947 | ||
948 | gsi_base = iosapic->global_irq_base; | |
949 | ||
950 | acpi_os_free(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 | |
4be44fcd | 981 | int 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 | ||
888ba6c6 | 1004 | #endif /* CONFIG_ACPI */ |