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