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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 | ||
d57c4a38 TL |
70 | const char __init * |
71 | acpi_get_sysname(void) | |
1da177e4 LT |
72 | { |
73 | #ifdef CONFIG_IA64_GENERIC | |
74 | unsigned long rsdp_phys; | |
ad71860a | 75 | struct acpi_table_rsdp *rsdp; |
1da177e4 LT |
76 | struct acpi_table_xsdt *xsdt; |
77 | struct acpi_table_header *hdr; | |
78 | ||
79 | rsdp_phys = acpi_find_rsdp(); | |
80 | if (!rsdp_phys) { | |
4be44fcd LB |
81 | printk(KERN_ERR |
82 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
1da177e4 LT |
83 | return "dig"; |
84 | } | |
85 | ||
ad71860a AS |
86 | rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); |
87 | if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { | |
4be44fcd LB |
88 | printk(KERN_ERR |
89 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
90 | return "dig"; |
91 | } | |
92 | ||
5f3b1a8b | 93 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); |
1da177e4 | 94 | hdr = &xsdt->header; |
ad71860a | 95 | if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { |
4be44fcd LB |
96 | printk(KERN_ERR |
97 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
98 | return "dig"; |
99 | } | |
100 | ||
101 | if (!strcmp(hdr->oem_id, "HP")) { | |
102 | return "hpzx1"; | |
4be44fcd | 103 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
1da177e4 LT |
104 | return "sn2"; |
105 | } | |
106 | ||
107 | return "dig"; | |
108 | #else | |
109 | # if defined (CONFIG_IA64_HP_SIM) | |
110 | return "hpsim"; | |
111 | # elif defined (CONFIG_IA64_HP_ZX1) | |
112 | return "hpzx1"; | |
113 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
114 | return "hpzx1_swiotlb"; | |
115 | # elif defined (CONFIG_IA64_SGI_SN2) | |
116 | return "sn2"; | |
117 | # elif defined (CONFIG_IA64_DIG) | |
118 | return "dig"; | |
119 | # else | |
120 | # error Unknown platform. Fix acpi.c. | |
121 | # endif | |
122 | #endif | |
123 | } | |
124 | ||
888ba6c6 | 125 | #ifdef CONFIG_ACPI |
1da177e4 LT |
126 | |
127 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
128 | ||
129 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
130 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
131 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
132 | }; | |
133 | ||
134 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
135 | ||
136 | /* | |
137 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
138 | * a generic platform event. Currently only CPEI is implemented. | |
139 | */ | |
4be44fcd | 140 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
141 | { |
142 | int vector = -1; | |
143 | ||
144 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
145 | /* corrected platform error interrupt */ | |
146 | vector = platform_intr_list[int_type]; | |
147 | } else | |
4be44fcd LB |
148 | printk(KERN_ERR |
149 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
150 | return vector; |
151 | } | |
152 | ||
4be44fcd | 153 | char *__acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
154 | { |
155 | return __va(phys_addr); | |
156 | } | |
157 | ||
158 | /* -------------------------------------------------------------------------- | |
159 | Boot-time Table Parsing | |
160 | -------------------------------------------------------------------------- */ | |
161 | ||
4be44fcd LB |
162 | static int total_cpus __initdata; |
163 | static int available_cpus __initdata; | |
164 | struct acpi_table_madt *acpi_madt __initdata; | |
165 | static u8 has_8259; | |
1da177e4 LT |
166 | |
167 | static int __init | |
5f3b1a8b | 168 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 169 | const unsigned long end) |
1da177e4 | 170 | { |
5f3b1a8b | 171 | struct acpi_madt_local_apic_override *lapic; |
1da177e4 | 172 | |
5f3b1a8b | 173 | lapic = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
174 | |
175 | if (BAD_MADT_ENTRY(lapic, end)) | |
176 | return -EINVAL; | |
177 | ||
178 | if (lapic->address) { | |
179 | iounmap(ipi_base_addr); | |
180 | ipi_base_addr = ioremap(lapic->address, 0); | |
181 | } | |
182 | return 0; | |
183 | } | |
184 | ||
1da177e4 | 185 | static int __init |
5f3b1a8b | 186 | acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 187 | { |
5f3b1a8b | 188 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 189 | |
5f3b1a8b | 190 | lsapic = (struct acpi_madt_local_sapic *)header; |
1da177e4 | 191 | |
5f3b1a8b | 192 | /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ |
1da177e4 | 193 | |
5f3b1a8b | 194 | if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { |
1da177e4 | 195 | #ifdef CONFIG_SMP |
4be44fcd LB |
196 | smp_boot_data.cpu_phys_id[available_cpus] = |
197 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 198 | #endif |
1da177e4 LT |
199 | ++available_cpus; |
200 | } | |
201 | ||
202 | total_cpus++; | |
203 | return 0; | |
204 | } | |
205 | ||
1da177e4 | 206 | static int __init |
5f3b1a8b | 207 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 208 | { |
5f3b1a8b | 209 | struct acpi_madt_local_apic_nmi *lacpi_nmi; |
1da177e4 | 210 | |
5f3b1a8b | 211 | lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
212 | |
213 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
214 | return -EINVAL; | |
215 | ||
216 | /* TBD: Support lapic_nmi entries */ | |
217 | return 0; | |
218 | } | |
219 | ||
1da177e4 | 220 | static int __init |
5f3b1a8b | 221 | acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 222 | { |
5f3b1a8b | 223 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 224 | |
5f3b1a8b | 225 | iosapic = (struct acpi_madt_io_sapic *)header; |
1da177e4 LT |
226 | |
227 | if (BAD_MADT_ENTRY(iosapic, end)) | |
228 | return -EINVAL; | |
229 | ||
0e888adc | 230 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
231 | } |
232 | ||
5810452d LB |
233 | static unsigned int __initdata acpi_madt_rev; |
234 | ||
1da177e4 | 235 | static int __init |
5f3b1a8b | 236 | acpi_parse_plat_int_src(struct acpi_subtable_header * header, |
4be44fcd | 237 | const unsigned long end) |
1da177e4 | 238 | { |
5f3b1a8b | 239 | struct acpi_madt_interrupt_source *plintsrc; |
1da177e4 LT |
240 | int vector; |
241 | ||
5f3b1a8b | 242 | plintsrc = (struct acpi_madt_interrupt_source *)header; |
1da177e4 LT |
243 | |
244 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
245 | return -EINVAL; | |
246 | ||
247 | /* | |
248 | * Get vector assignment for this interrupt, set attributes, | |
249 | * and program the IOSAPIC routing table. | |
250 | */ | |
251 | vector = iosapic_register_platform_intr(plintsrc->type, | |
252 | plintsrc->global_irq, | |
5f3b1a8b | 253 | plintsrc->io_sapic_vector, |
1da177e4 LT |
254 | plintsrc->eid, |
255 | plintsrc->id, | |
5f3b1a8b AS |
256 | ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == |
257 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
258 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
259 | ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
260 | ACPI_MADT_TRIGGER_EDGE) ? | |
261 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
262 | |
263 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 | 264 | if (acpi_madt_rev > 1) { |
5f3b1a8b | 265 | acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; |
55e59c51 AR |
266 | } |
267 | ||
268 | /* | |
269 | * Save the physical id, so we can check when its being removed | |
270 | */ | |
271 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
272 | ||
1da177e4 LT |
273 | return 0; |
274 | } | |
275 | ||
b88e9265 | 276 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
277 | unsigned int can_cpei_retarget(void) |
278 | { | |
279 | extern int cpe_vector; | |
ff741906 | 280 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
281 | |
282 | /* | |
283 | * Only if CPEI is supported and the override flag | |
284 | * is present, otherwise return that its re-targettable | |
285 | * if we are in polling mode. | |
286 | */ | |
ff741906 AR |
287 | if (cpe_vector > 0) { |
288 | if (acpi_cpei_override || force_cpei_retarget) | |
289 | return 1; | |
290 | else | |
291 | return 0; | |
292 | } | |
293 | return 1; | |
55e59c51 AR |
294 | } |
295 | ||
296 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
297 | { | |
298 | unsigned int logical_id; | |
299 | ||
300 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
301 | ||
302 | if (logical_id == cpu) | |
303 | return 1; | |
304 | else | |
305 | return 0; | |
306 | } | |
307 | ||
308 | void set_cpei_target_cpu(unsigned int cpu) | |
309 | { | |
310 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
311 | } | |
b88e9265 | 312 | #endif |
55e59c51 AR |
313 | |
314 | unsigned int get_cpei_target_cpu(void) | |
315 | { | |
316 | return acpi_cpei_phys_cpuid; | |
317 | } | |
318 | ||
1da177e4 | 319 | static int __init |
5f3b1a8b | 320 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 321 | const unsigned long end) |
1da177e4 | 322 | { |
5f3b1a8b | 323 | struct acpi_madt_interrupt_override *p; |
1da177e4 | 324 | |
5f3b1a8b | 325 | p = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
326 | |
327 | if (BAD_MADT_ENTRY(p, end)) | |
328 | return -EINVAL; | |
329 | ||
5f3b1a8b AS |
330 | iosapic_override_isa_irq(p->source_irq, p->global_irq, |
331 | ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == | |
332 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
333 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
334 | ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
335 | ACPI_MADT_TRIGGER_EDGE) ? | |
336 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
337 | return 0; |
338 | } | |
339 | ||
1da177e4 | 340 | static int __init |
5f3b1a8b | 341 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 342 | { |
5f3b1a8b | 343 | struct acpi_madt_nmi_source *nmi_src; |
1da177e4 | 344 | |
5f3b1a8b | 345 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
346 | |
347 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
348 | return -EINVAL; | |
349 | ||
350 | /* TBD: Support nimsrc entries */ | |
351 | return 0; | |
352 | } | |
353 | ||
4be44fcd | 354 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 355 | { |
4be44fcd | 356 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
357 | |
358 | /* | |
359 | * Unfortunately ITC_DRIFT is not yet part of the | |
360 | * official SAL spec, so the ITC_DRIFT bit is not | |
361 | * set by the BIOS on this hardware. | |
362 | */ | |
363 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
364 | ||
365 | cyclone_setup(); | |
366 | } | |
367 | } | |
368 | ||
5f3b1a8b | 369 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 370 | { |
5f3b1a8b | 371 | if (!table) |
1da177e4 LT |
372 | return -EINVAL; |
373 | ||
5f3b1a8b | 374 | acpi_madt = (struct acpi_table_madt *)table; |
1da177e4 | 375 | |
55e59c51 AR |
376 | acpi_madt_rev = acpi_madt->header.revision; |
377 | ||
1da177e4 LT |
378 | /* remember the value for reference after free_initmem() */ |
379 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 380 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 | 381 | #else |
5f3b1a8b | 382 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
1da177e4 LT |
383 | #endif |
384 | iosapic_system_init(has_8259); | |
385 | ||
386 | /* Get base address of IPI Message Block */ | |
387 | ||
5f3b1a8b AS |
388 | if (acpi_madt->address) |
389 | ipi_base_addr = ioremap(acpi_madt->address, 0); | |
1da177e4 LT |
390 | |
391 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
392 | ||
393 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 394 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
395 | |
396 | return 0; | |
397 | } | |
398 | ||
1da177e4 LT |
399 | #ifdef CONFIG_ACPI_NUMA |
400 | ||
401 | #undef SLIT_DEBUG | |
402 | ||
403 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
404 | ||
4be44fcd | 405 | static int __initdata srat_num_cpus; /* number of cpus */ |
1da177e4 LT |
406 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; |
407 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
408 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 LT |
409 | static struct acpi_table_slit __initdata *slit_table; |
410 | ||
5f3b1a8b | 411 | static int get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) |
3ad5ef8b JS |
412 | { |
413 | int pxm; | |
414 | ||
5f3b1a8b | 415 | pxm = pa->proximity_domain_lo; |
3ad5ef8b | 416 | if (ia64_platform_is("sn2")) |
5f3b1a8b | 417 | pxm += pa->proximity_domain_hi[0] << 8; |
3ad5ef8b JS |
418 | return pxm; |
419 | } | |
420 | ||
5f3b1a8b | 421 | static int get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) |
3ad5ef8b JS |
422 | { |
423 | int pxm; | |
424 | ||
425 | pxm = ma->proximity_domain; | |
defad230 AS |
426 | if (!ia64_platform_is("sn2")) |
427 | pxm &= 0xff; | |
5f3b1a8b | 428 | |
3ad5ef8b JS |
429 | return pxm; |
430 | } | |
431 | ||
1da177e4 LT |
432 | /* |
433 | * ACPI 2.0 SLIT (System Locality Information Table) | |
434 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
435 | */ | |
4be44fcd | 436 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
437 | { |
438 | u32 len; | |
439 | ||
440 | len = sizeof(struct acpi_table_header) + 8 | |
5f3b1a8b | 441 | + slit->locality_count * slit->locality_count; |
1da177e4 | 442 | if (slit->header.length != len) { |
4be44fcd LB |
443 | printk(KERN_ERR |
444 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 LT |
445 | len, slit->header.length); |
446 | memset(numa_slit, 10, sizeof(numa_slit)); | |
447 | return; | |
448 | } | |
449 | slit_table = slit; | |
450 | } | |
451 | ||
452 | void __init | |
5f3b1a8b | 453 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
1da177e4 | 454 | { |
3ad5ef8b JS |
455 | int pxm; |
456 | ||
5f3b1a8b | 457 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
d903cea3 KK |
458 | return; |
459 | ||
3ad5ef8b JS |
460 | pxm = get_processor_proximity_domain(pa); |
461 | ||
1da177e4 | 462 | /* record this node in proximity bitmap */ |
3ad5ef8b | 463 | pxm_bit_set(pxm); |
1da177e4 | 464 | |
4be44fcd | 465 | node_cpuid[srat_num_cpus].phys_id = |
5f3b1a8b | 466 | (pa->apic_id << 8) | (pa->local_sapic_eid); |
1da177e4 | 467 | /* nid should be overridden as logical node id later */ |
3ad5ef8b | 468 | node_cpuid[srat_num_cpus].nid = pxm; |
1da177e4 LT |
469 | srat_num_cpus++; |
470 | } | |
471 | ||
472 | void __init | |
5f3b1a8b | 473 | acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) |
1da177e4 LT |
474 | { |
475 | unsigned long paddr, size; | |
3ad5ef8b | 476 | int pxm; |
1da177e4 LT |
477 | struct node_memblk_s *p, *q, *pend; |
478 | ||
3ad5ef8b | 479 | pxm = get_memory_proximity_domain(ma); |
1da177e4 LT |
480 | |
481 | /* fill node memory chunk structure */ | |
5f3b1a8b AS |
482 | paddr = ma->base_address; |
483 | size = ma->length; | |
1da177e4 LT |
484 | |
485 | /* Ignore disabled entries */ | |
5f3b1a8b | 486 | if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) |
1da177e4 LT |
487 | return; |
488 | ||
489 | /* record this node in proximity bitmap */ | |
490 | pxm_bit_set(pxm); | |
491 | ||
492 | /* Insertion sort based on base address */ | |
493 | pend = &node_memblk[num_node_memblks]; | |
494 | for (p = &node_memblk[0]; p < pend; p++) { | |
495 | if (paddr < p->start_paddr) | |
496 | break; | |
497 | } | |
498 | if (p < pend) { | |
499 | for (q = pend - 1; q >= p; q--) | |
500 | *(q + 1) = *q; | |
501 | } | |
502 | p->start_paddr = paddr; | |
503 | p->size = size; | |
504 | p->nid = pxm; | |
505 | num_node_memblks++; | |
506 | } | |
507 | ||
4be44fcd | 508 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
509 | { |
510 | int i, j, node_from, node_to; | |
511 | ||
512 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
513 | if (srat_num_cpus == 0) { | |
514 | node_set_online(0); | |
515 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
516 | return; | |
517 | } | |
518 | ||
519 | /* | |
520 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
521 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
522 | */ | |
1da177e4 LT |
523 | nodes_clear(node_online_map); |
524 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
525 | if (pxm_bit_test(i)) { | |
762834e8 | 526 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
527 | node_set_online(nid); |
528 | } | |
529 | } | |
530 | ||
531 | /* set logical node id in memory chunk structure */ | |
532 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 533 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
534 | |
535 | /* assign memory bank numbers for each chunk on each node */ | |
536 | for_each_online_node(i) { | |
537 | int bank; | |
538 | ||
539 | bank = 0; | |
540 | for (j = 0; j < num_node_memblks; j++) | |
541 | if (node_memblk[j].nid == i) | |
542 | node_memblk[j].bank = bank++; | |
543 | } | |
544 | ||
545 | /* set logical node id in cpu structure */ | |
546 | for (i = 0; i < srat_num_cpus; i++) | |
762834e8 | 547 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 548 | |
4be44fcd LB |
549 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
550 | num_online_nodes()); | |
551 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
552 | num_node_memblks); | |
1da177e4 | 553 | |
4be44fcd LB |
554 | if (!slit_table) |
555 | return; | |
1da177e4 | 556 | memset(numa_slit, -1, sizeof(numa_slit)); |
5f3b1a8b | 557 | for (i = 0; i < slit_table->locality_count; i++) { |
1da177e4 LT |
558 | if (!pxm_bit_test(i)) |
559 | continue; | |
762834e8 | 560 | node_from = pxm_to_node(i); |
5f3b1a8b | 561 | for (j = 0; j < slit_table->locality_count; j++) { |
1da177e4 LT |
562 | if (!pxm_bit_test(j)) |
563 | continue; | |
762834e8 | 564 | node_to = pxm_to_node(j); |
1da177e4 | 565 | node_distance(node_from, node_to) = |
5f3b1a8b | 566 | slit_table->entry[i * slit_table->locality_count + j]; |
1da177e4 LT |
567 | } |
568 | } | |
569 | ||
570 | #ifdef SLIT_DEBUG | |
571 | printk("ACPI 2.0 SLIT locality table:\n"); | |
572 | for_each_online_node(i) { | |
573 | for_each_online_node(j) | |
4be44fcd | 574 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
575 | printk("\n"); |
576 | } | |
577 | #endif | |
578 | } | |
4be44fcd | 579 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 580 | |
1f3a6a15 KK |
581 | /* |
582 | * success: return IRQ number (>=0) | |
583 | * failure: return < 0 | |
584 | */ | |
cb654695 | 585 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 | 586 | { |
3948ec94 JK |
587 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
588 | return gsi; | |
589 | ||
1da177e4 LT |
590 | if (has_8259 && gsi < 16) |
591 | return isa_irq_to_vector(gsi); | |
592 | ||
593 | return iosapic_register_intr(gsi, | |
cb654695 | 594 | (polarity == |
4be44fcd LB |
595 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
596 | IOSAPIC_POL_LOW, | |
cb654695 | 597 | (triggering == |
4be44fcd LB |
598 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
599 | IOSAPIC_LEVEL); | |
1da177e4 | 600 | } |
4be44fcd | 601 | |
1da177e4 LT |
602 | EXPORT_SYMBOL(acpi_register_gsi); |
603 | ||
4be44fcd | 604 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 | 605 | { |
72253943 JK |
606 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
607 | return; | |
608 | ||
1da177e4 LT |
609 | iosapic_unregister_intr(gsi); |
610 | } | |
4be44fcd | 611 | |
1da177e4 | 612 | EXPORT_SYMBOL(acpi_unregister_gsi); |
1da177e4 | 613 | |
5f3b1a8b | 614 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 LT |
615 | { |
616 | struct acpi_table_header *fadt_header; | |
cee324b1 | 617 | struct acpi_table_fadt *fadt; |
1da177e4 | 618 | |
5f3b1a8b | 619 | if (!table) |
1da177e4 LT |
620 | return -EINVAL; |
621 | ||
5f3b1a8b | 622 | fadt_header = (struct acpi_table_header *)table; |
1da177e4 | 623 | if (fadt_header->revision != 3) |
4be44fcd | 624 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 625 | |
cee324b1 | 626 | fadt = (struct acpi_table_fadt *)fadt_header; |
1da177e4 | 627 | |
cee324b1 | 628 | acpi_register_gsi(fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); |
1da177e4 LT |
629 | return 0; |
630 | } | |
631 | ||
4be44fcd | 632 | unsigned long __init acpi_find_rsdp(void) |
1da177e4 LT |
633 | { |
634 | unsigned long rsdp_phys = 0; | |
635 | ||
b2c99e3c BH |
636 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
637 | rsdp_phys = efi.acpi20; | |
638 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
4be44fcd LB |
639 | printk(KERN_WARNING PREFIX |
640 | "v1.0/r0.71 tables no longer supported\n"); | |
1da177e4 LT |
641 | return rsdp_phys; |
642 | } | |
643 | ||
4be44fcd | 644 | int __init acpi_boot_init(void) |
1da177e4 LT |
645 | { |
646 | ||
647 | /* | |
648 | * MADT | |
649 | * ---- | |
650 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
651 | * Note that this table provides platform SMP configuration | |
652 | * information -- the successor to MPS tables. | |
653 | */ | |
654 | ||
db2d4ccd | 655 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
656 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
657 | goto skip_madt; | |
658 | } | |
659 | ||
660 | /* Local APIC */ | |
661 | ||
4be44fcd | 662 | if (acpi_table_parse_madt |
5f3b1a8b | 663 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
4be44fcd LB |
664 | printk(KERN_ERR PREFIX |
665 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 666 | |
5f3b1a8b | 667 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, acpi_parse_lsapic, NR_CPUS) |
4be44fcd LB |
668 | < 1) |
669 | printk(KERN_ERR PREFIX | |
670 | "Error parsing MADT - no LAPIC entries\n"); | |
1da177e4 | 671 | |
5f3b1a8b | 672 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
4be44fcd | 673 | < 0) |
1da177e4 LT |
674 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
675 | ||
676 | /* I/O APIC */ | |
677 | ||
4be44fcd | 678 | if (acpi_table_parse_madt |
5f3b1a8b | 679 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) |
4be44fcd LB |
680 | printk(KERN_ERR PREFIX |
681 | "Error parsing MADT - no IOSAPIC entries\n"); | |
1da177e4 LT |
682 | |
683 | /* System-Level Interrupt Routing */ | |
684 | ||
4be44fcd | 685 | if (acpi_table_parse_madt |
5f3b1a8b | 686 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
4be44fcd LB |
687 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
688 | printk(KERN_ERR PREFIX | |
689 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 690 | |
4be44fcd | 691 | if (acpi_table_parse_madt |
5f3b1a8b | 692 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
4be44fcd LB |
693 | printk(KERN_ERR PREFIX |
694 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 | 695 | |
5f3b1a8b | 696 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
1da177e4 | 697 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
4be44fcd | 698 | skip_madt: |
1da177e4 LT |
699 | |
700 | /* | |
701 | * FADT says whether a legacy keyboard controller is present. | |
702 | * The FADT also contains an SCI_INT line, by which the system | |
703 | * gets interrupts such as power and sleep buttons. If it's not | |
704 | * on a Legacy interrupt, it needs to be setup. | |
705 | */ | |
db2d4ccd | 706 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
1da177e4 LT |
707 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
708 | ||
709 | #ifdef CONFIG_SMP | |
710 | if (available_cpus == 0) { | |
711 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
712 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
4be44fcd LB |
713 | smp_boot_data.cpu_phys_id[available_cpus] = |
714 | hard_smp_processor_id(); | |
715 | available_cpus = 1; /* We've got at least one of these, no? */ | |
1da177e4 LT |
716 | } |
717 | smp_boot_data.cpu_count = available_cpus; | |
718 | ||
719 | smp_build_cpu_map(); | |
720 | # ifdef CONFIG_ACPI_NUMA | |
721 | if (srat_num_cpus == 0) { | |
722 | int cpu, i = 1; | |
723 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
724 | if (smp_boot_data.cpu_phys_id[cpu] != |
725 | hard_smp_processor_id()) | |
726 | node_cpuid[i++].phys_id = | |
727 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 728 | } |
1da177e4 | 729 | # endif |
8d7e3517 TL |
730 | #endif |
731 | #ifdef CONFIG_ACPI_NUMA | |
732 | build_cpu_to_node_map(); | |
1da177e4 LT |
733 | #endif |
734 | /* Make boot-up look pretty */ | |
4be44fcd LB |
735 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, |
736 | total_cpus); | |
1da177e4 LT |
737 | return 0; |
738 | } | |
739 | ||
4be44fcd | 740 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 LT |
741 | { |
742 | int vector; | |
743 | ||
744 | if (has_8259 && gsi < 16) | |
745 | *irq = isa_irq_to_vector(gsi); | |
746 | else { | |
747 | vector = gsi_to_vector(gsi); | |
748 | if (vector == -1) | |
749 | return -1; | |
750 | ||
751 | *irq = vector; | |
752 | } | |
753 | return 0; | |
754 | } | |
755 | ||
756 | /* | |
757 | * ACPI based hotplug CPU support | |
758 | */ | |
759 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
760 | static | |
4be44fcd | 761 | int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) |
1da177e4 LT |
762 | { |
763 | #ifdef CONFIG_ACPI_NUMA | |
4be44fcd | 764 | int pxm_id; |
08992986 | 765 | int nid; |
1da177e4 LT |
766 | |
767 | pxm_id = acpi_get_pxm(handle); | |
1da177e4 | 768 | /* |
08992986 KH |
769 | * We don't have cpu-only-node hotadd. But if the system equips |
770 | * SRAT table, pxm is already found and node is ready. | |
771 | * So, just pxm_to_nid(pxm) is OK. | |
772 | * This code here is for the system which doesn't have full SRAT | |
773 | * table for possible cpus. | |
1da177e4 | 774 | */ |
08992986 | 775 | nid = acpi_map_pxm_to_node(pxm_id); |
4be44fcd | 776 | node_cpuid[cpu].phys_id = physid; |
08992986 | 777 | node_cpuid[cpu].nid = nid; |
1da177e4 | 778 | #endif |
4be44fcd | 779 | return (0); |
1da177e4 LT |
780 | } |
781 | ||
a6b14fa6 AR |
782 | int additional_cpus __initdata = -1; |
783 | ||
784 | static __init int setup_additional_cpus(char *s) | |
785 | { | |
786 | if (s) | |
787 | additional_cpus = simple_strtol(s, NULL, 0); | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
792 | early_param("additional_cpus", setup_additional_cpus); | |
793 | ||
794 | /* | |
72fdbdce | 795 | * cpu_possible_map should be static, it cannot change as CPUs |
a6b14fa6 AR |
796 | * are onlined, or offlined. The reason is per-cpu data-structures |
797 | * are allocated by some modules at init time, and dont expect to | |
798 | * do this dynamically on cpu arrival/departure. | |
799 | * cpu_present_map on the other hand can change dynamically. | |
800 | * In case when cpu_hotplug is not compiled, then we resort to current | |
801 | * behaviour, which is cpu_possible == cpu_present. | |
802 | * - Ashok Raj | |
803 | * | |
804 | * Three ways to find out the number of additional hotplug CPUs: | |
805 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
806 | * - The user can overwrite it with additional_cpus=NUM | |
807 | * - Otherwise don't reserve additional CPUs. | |
808 | */ | |
809 | __init void prefill_possible_map(void) | |
810 | { | |
811 | int i; | |
812 | int possible, disabled_cpus; | |
813 | ||
814 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 815 | |
a6b14fa6 | 816 | if (additional_cpus == -1) { |
8f8b1138 | 817 | if (disabled_cpus > 0) |
a6b14fa6 | 818 | additional_cpus = disabled_cpus; |
8f8b1138 | 819 | else |
a6b14fa6 | 820 | additional_cpus = 0; |
8f8b1138 AR |
821 | } |
822 | ||
823 | possible = available_cpus + additional_cpus; | |
824 | ||
a6b14fa6 AR |
825 | if (possible > NR_CPUS) |
826 | possible = NR_CPUS; | |
827 | ||
828 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 829 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
830 | |
831 | for (i = 0; i < possible; i++) | |
832 | cpu_set(i, cpu_possible_map); | |
833 | } | |
834 | ||
4be44fcd | 835 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 836 | { |
4be44fcd | 837 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 838 | union acpi_object *obj; |
5f3b1a8b | 839 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 LT |
840 | cpumask_t tmp_map; |
841 | long physid; | |
842 | int cpu; | |
4be44fcd | 843 | |
1da177e4 LT |
844 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
845 | return -EINVAL; | |
846 | ||
4be44fcd | 847 | if (!buffer.length || !buffer.pointer) |
1da177e4 | 848 | return -EINVAL; |
4be44fcd | 849 | |
1da177e4 | 850 | obj = buffer.pointer; |
5f3b1a8b AS |
851 | if (obj->type != ACPI_TYPE_BUFFER) |
852 | { | |
02438d87 | 853 | kfree(buffer.pointer); |
1da177e4 LT |
854 | return -EINVAL; |
855 | } | |
856 | ||
5f3b1a8b | 857 | lsapic = (struct acpi_madt_local_sapic *)obj->buffer.pointer; |
1da177e4 | 858 | |
5f3b1a8b AS |
859 | if ((lsapic->header.type != ACPI_MADT_TYPE_LOCAL_SAPIC) || |
860 | (!lsapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
02438d87 | 861 | kfree(buffer.pointer); |
1da177e4 LT |
862 | return -EINVAL; |
863 | } | |
864 | ||
4be44fcd | 865 | physid = ((lsapic->id << 8) | (lsapic->eid)); |
1da177e4 | 866 | |
02438d87 | 867 | kfree(buffer.pointer); |
1da177e4 LT |
868 | buffer.length = ACPI_ALLOCATE_BUFFER; |
869 | buffer.pointer = NULL; | |
870 | ||
871 | cpus_complement(tmp_map, cpu_present_map); | |
872 | cpu = first_cpu(tmp_map); | |
4be44fcd | 873 | if (cpu >= NR_CPUS) |
1da177e4 LT |
874 | return -EINVAL; |
875 | ||
876 | acpi_map_cpu2node(handle, cpu, physid); | |
877 | ||
4be44fcd | 878 | cpu_set(cpu, cpu_present_map); |
1da177e4 | 879 | ia64_cpu_to_sapicid[cpu] = physid; |
1da177e4 LT |
880 | |
881 | *pcpu = cpu; | |
4be44fcd | 882 | return (0); |
1da177e4 | 883 | } |
1da177e4 | 884 | |
4be44fcd | 885 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 886 | |
4be44fcd | 887 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 888 | { |
1da177e4 | 889 | ia64_cpu_to_sapicid[cpu] = -1; |
4be44fcd | 890 | cpu_clear(cpu, cpu_present_map); |
1da177e4 LT |
891 | |
892 | #ifdef CONFIG_ACPI_NUMA | |
893 | /* NUMA specific cleanup's */ | |
894 | #endif | |
895 | ||
4be44fcd | 896 | return (0); |
1da177e4 | 897 | } |
4be44fcd | 898 | |
1da177e4 | 899 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 900 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 LT |
901 | |
902 | #ifdef CONFIG_ACPI_NUMA | |
650316f1 | 903 | static acpi_status __devinit |
4be44fcd | 904 | acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) |
1da177e4 | 905 | { |
4be44fcd | 906 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 907 | union acpi_object *obj; |
5f3b1a8b | 908 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 909 | unsigned int gsi_base; |
bb0fc085 | 910 | int pxm, node; |
1da177e4 LT |
911 | |
912 | /* Only care about objects w/ a method that returns the MADT */ | |
913 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
914 | return AE_OK; | |
915 | ||
916 | if (!buffer.length || !buffer.pointer) | |
917 | return AE_OK; | |
918 | ||
919 | obj = buffer.pointer; | |
920 | if (obj->type != ACPI_TYPE_BUFFER || | |
921 | obj->buffer.length < sizeof(*iosapic)) { | |
02438d87 | 922 | kfree(buffer.pointer); |
1da177e4 LT |
923 | return AE_OK; |
924 | } | |
925 | ||
5f3b1a8b | 926 | iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; |
1da177e4 | 927 | |
5f3b1a8b | 928 | if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { |
02438d87 | 929 | kfree(buffer.pointer); |
1da177e4 LT |
930 | return AE_OK; |
931 | } | |
932 | ||
933 | gsi_base = iosapic->global_irq_base; | |
934 | ||
02438d87 | 935 | kfree(buffer.pointer); |
1da177e4 LT |
936 | |
937 | /* | |
bb0fc085 | 938 | * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell |
1da177e4 LT |
939 | * us which node to associate this with. |
940 | */ | |
bb0fc085 AW |
941 | pxm = acpi_get_pxm(handle); |
942 | if (pxm < 0) | |
1da177e4 | 943 | return AE_OK; |
1da177e4 | 944 | |
762834e8 | 945 | node = pxm_to_node(pxm); |
1da177e4 LT |
946 | |
947 | if (node >= MAX_NUMNODES || !node_online(node) || | |
948 | cpus_empty(node_to_cpumask(node))) | |
949 | return AE_OK; | |
950 | ||
951 | /* We know a gsi to node mapping! */ | |
952 | map_iosapic_to_node(gsi_base, node); | |
953 | return AE_OK; | |
954 | } | |
650316f1 BH |
955 | |
956 | static int __init | |
957 | acpi_map_iosapics (void) | |
958 | { | |
959 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); | |
960 | return 0; | |
961 | } | |
962 | ||
963 | fs_initcall(acpi_map_iosapics); | |
964 | #endif /* CONFIG_ACPI_NUMA */ | |
b1bb248a | 965 | |
4be44fcd | 966 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a | 967 | { |
0e888adc KK |
968 | int err; |
969 | ||
970 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
971 | return err; | |
972 | ||
24b8e0cc | 973 | #ifdef CONFIG_ACPI_NUMA |
0e888adc | 974 | acpi_map_iosapic(handle, 0, NULL, NULL); |
4be44fcd | 975 | #endif /* CONFIG_ACPI_NUMA */ |
0e888adc KK |
976 | |
977 | return 0; | |
b1bb248a | 978 | } |
4be44fcd | 979 | |
b1bb248a KK |
980 | EXPORT_SYMBOL(acpi_register_ioapic); |
981 | ||
4be44fcd | 982 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a | 983 | { |
0e888adc | 984 | return iosapic_remove(gsi_base); |
b1bb248a | 985 | } |
4be44fcd | 986 | |
b1bb248a KK |
987 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
988 | ||
888ba6c6 | 989 | #endif /* CONFIG_ACPI */ |