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1da177e4 LT |
1 | /* |
2 | * acpi.c - Architecture-Specific Low-Level ACPI Support | |
3 | * | |
4 | * Copyright (C) 1999 VA Linux Systems | |
5 | * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com> | |
6 | * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co. | |
7 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
8 | * Copyright (C) 2000 Intel Corp. | |
9 | * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com> | |
10 | * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
11 | * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com> | |
12 | * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com> | |
13 | * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de> | |
55e59c51 | 14 | * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com> |
1da177e4 LT |
15 | * |
16 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2 of the License, or | |
21 | * (at your option) any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
31 | * | |
32 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
33 | */ | |
34 | ||
1da177e4 LT |
35 | #include <linux/module.h> |
36 | #include <linux/init.h> | |
37 | #include <linux/kernel.h> | |
38 | #include <linux/sched.h> | |
39 | #include <linux/smp.h> | |
40 | #include <linux/string.h> | |
41 | #include <linux/types.h> | |
42 | #include <linux/irq.h> | |
43 | #include <linux/acpi.h> | |
44 | #include <linux/efi.h> | |
45 | #include <linux/mmzone.h> | |
46 | #include <linux/nodemask.h> | |
47 | #include <asm/io.h> | |
48 | #include <asm/iosapic.h> | |
49 | #include <asm/machvec.h> | |
50 | #include <asm/page.h> | |
51 | #include <asm/system.h> | |
52 | #include <asm/numa.h> | |
53 | #include <asm/sal.h> | |
54 | #include <asm/cyclone.h> | |
55 | ||
56 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
57 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 58 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
59 | |
60 | #define PREFIX "ACPI: " | |
61 | ||
62 | void (*pm_idle) (void); | |
63 | EXPORT_SYMBOL(pm_idle); | |
64 | void (*pm_power_off) (void); | |
65 | EXPORT_SYMBOL(pm_power_off); | |
66 | ||
55e59c51 AR |
67 | unsigned int acpi_cpei_override; |
68 | unsigned int acpi_cpei_phys_cpuid; | |
69 | ||
e8b2fd01 LB |
70 | unsigned long acpi_wakeup_address = 0; |
71 | ||
239665a3 LB |
72 | #ifdef CONFIG_IA64_GENERIC |
73 | static unsigned long __init acpi_find_rsdp(void) | |
74 | { | |
75 | unsigned long rsdp_phys = 0; | |
76 | ||
77 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) | |
78 | rsdp_phys = efi.acpi20; | |
79 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
80 | printk(KERN_WARNING PREFIX | |
81 | "v1.0/r0.71 tables no longer supported\n"); | |
82 | return rsdp_phys; | |
83 | } | |
84 | #endif | |
85 | ||
d57c4a38 TL |
86 | const char __init * |
87 | acpi_get_sysname(void) | |
1da177e4 LT |
88 | { |
89 | #ifdef CONFIG_IA64_GENERIC | |
90 | unsigned long rsdp_phys; | |
ad71860a | 91 | struct acpi_table_rsdp *rsdp; |
1da177e4 LT |
92 | struct acpi_table_xsdt *xsdt; |
93 | struct acpi_table_header *hdr; | |
94 | ||
95 | rsdp_phys = acpi_find_rsdp(); | |
96 | if (!rsdp_phys) { | |
4be44fcd LB |
97 | printk(KERN_ERR |
98 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
1da177e4 LT |
99 | return "dig"; |
100 | } | |
101 | ||
ad71860a AS |
102 | rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); |
103 | if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { | |
4be44fcd LB |
104 | printk(KERN_ERR |
105 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
106 | return "dig"; |
107 | } | |
108 | ||
5f3b1a8b | 109 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); |
1da177e4 | 110 | hdr = &xsdt->header; |
ad71860a | 111 | if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { |
4be44fcd LB |
112 | printk(KERN_ERR |
113 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
114 | return "dig"; |
115 | } | |
116 | ||
117 | if (!strcmp(hdr->oem_id, "HP")) { | |
118 | return "hpzx1"; | |
4be44fcd | 119 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
1da177e4 LT |
120 | return "sn2"; |
121 | } | |
122 | ||
123 | return "dig"; | |
124 | #else | |
125 | # if defined (CONFIG_IA64_HP_SIM) | |
126 | return "hpsim"; | |
127 | # elif defined (CONFIG_IA64_HP_ZX1) | |
128 | return "hpzx1"; | |
129 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
130 | return "hpzx1_swiotlb"; | |
131 | # elif defined (CONFIG_IA64_SGI_SN2) | |
132 | return "sn2"; | |
133 | # elif defined (CONFIG_IA64_DIG) | |
134 | return "dig"; | |
135 | # else | |
136 | # error Unknown platform. Fix acpi.c. | |
137 | # endif | |
138 | #endif | |
139 | } | |
140 | ||
888ba6c6 | 141 | #ifdef CONFIG_ACPI |
1da177e4 LT |
142 | |
143 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
144 | ||
145 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
146 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
147 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
148 | }; | |
149 | ||
150 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
151 | ||
152 | /* | |
153 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
154 | * a generic platform event. Currently only CPEI is implemented. | |
155 | */ | |
4be44fcd | 156 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
157 | { |
158 | int vector = -1; | |
159 | ||
160 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
161 | /* corrected platform error interrupt */ | |
162 | vector = platform_intr_list[int_type]; | |
163 | } else | |
4be44fcd LB |
164 | printk(KERN_ERR |
165 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
166 | return vector; |
167 | } | |
168 | ||
2fdf0741 | 169 | char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
170 | { |
171 | return __va(phys_addr); | |
172 | } | |
173 | ||
174 | /* -------------------------------------------------------------------------- | |
175 | Boot-time Table Parsing | |
176 | -------------------------------------------------------------------------- */ | |
177 | ||
4be44fcd LB |
178 | static int total_cpus __initdata; |
179 | static int available_cpus __initdata; | |
180 | struct acpi_table_madt *acpi_madt __initdata; | |
181 | static u8 has_8259; | |
1da177e4 LT |
182 | |
183 | static int __init | |
5f3b1a8b | 184 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 185 | const unsigned long end) |
1da177e4 | 186 | { |
5f3b1a8b | 187 | struct acpi_madt_local_apic_override *lapic; |
1da177e4 | 188 | |
5f3b1a8b | 189 | lapic = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
190 | |
191 | if (BAD_MADT_ENTRY(lapic, end)) | |
192 | return -EINVAL; | |
193 | ||
194 | if (lapic->address) { | |
195 | iounmap(ipi_base_addr); | |
196 | ipi_base_addr = ioremap(lapic->address, 0); | |
197 | } | |
198 | return 0; | |
199 | } | |
200 | ||
1da177e4 | 201 | static int __init |
5f3b1a8b | 202 | acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 203 | { |
5f3b1a8b | 204 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 205 | |
5f3b1a8b | 206 | lsapic = (struct acpi_madt_local_sapic *)header; |
1da177e4 | 207 | |
5f3b1a8b | 208 | /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ |
1da177e4 | 209 | |
5f3b1a8b | 210 | if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { |
1da177e4 | 211 | #ifdef CONFIG_SMP |
4be44fcd LB |
212 | smp_boot_data.cpu_phys_id[available_cpus] = |
213 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 214 | #endif |
1da177e4 LT |
215 | ++available_cpus; |
216 | } | |
217 | ||
218 | total_cpus++; | |
219 | return 0; | |
220 | } | |
221 | ||
1da177e4 | 222 | static int __init |
5f3b1a8b | 223 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 224 | { |
5f3b1a8b | 225 | struct acpi_madt_local_apic_nmi *lacpi_nmi; |
1da177e4 | 226 | |
5f3b1a8b | 227 | lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
228 | |
229 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
230 | return -EINVAL; | |
231 | ||
232 | /* TBD: Support lapic_nmi entries */ | |
233 | return 0; | |
234 | } | |
235 | ||
1da177e4 | 236 | static int __init |
5f3b1a8b | 237 | acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 238 | { |
5f3b1a8b | 239 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 240 | |
5f3b1a8b | 241 | iosapic = (struct acpi_madt_io_sapic *)header; |
1da177e4 LT |
242 | |
243 | if (BAD_MADT_ENTRY(iosapic, end)) | |
244 | return -EINVAL; | |
245 | ||
0e888adc | 246 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
247 | } |
248 | ||
5810452d LB |
249 | static unsigned int __initdata acpi_madt_rev; |
250 | ||
1da177e4 | 251 | static int __init |
5f3b1a8b | 252 | acpi_parse_plat_int_src(struct acpi_subtable_header * header, |
4be44fcd | 253 | const unsigned long end) |
1da177e4 | 254 | { |
5f3b1a8b | 255 | struct acpi_madt_interrupt_source *plintsrc; |
1da177e4 LT |
256 | int vector; |
257 | ||
5f3b1a8b | 258 | plintsrc = (struct acpi_madt_interrupt_source *)header; |
1da177e4 LT |
259 | |
260 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
261 | return -EINVAL; | |
262 | ||
263 | /* | |
264 | * Get vector assignment for this interrupt, set attributes, | |
265 | * and program the IOSAPIC routing table. | |
266 | */ | |
267 | vector = iosapic_register_platform_intr(plintsrc->type, | |
268 | plintsrc->global_irq, | |
5f3b1a8b | 269 | plintsrc->io_sapic_vector, |
1da177e4 LT |
270 | plintsrc->eid, |
271 | plintsrc->id, | |
5f3b1a8b AS |
272 | ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == |
273 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
274 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
275 | ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
276 | ACPI_MADT_TRIGGER_EDGE) ? | |
277 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
278 | |
279 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 | 280 | if (acpi_madt_rev > 1) { |
5f3b1a8b | 281 | acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; |
55e59c51 AR |
282 | } |
283 | ||
284 | /* | |
285 | * Save the physical id, so we can check when its being removed | |
286 | */ | |
287 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
288 | ||
1da177e4 LT |
289 | return 0; |
290 | } | |
291 | ||
b88e9265 | 292 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
293 | unsigned int can_cpei_retarget(void) |
294 | { | |
295 | extern int cpe_vector; | |
ff741906 | 296 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
297 | |
298 | /* | |
299 | * Only if CPEI is supported and the override flag | |
300 | * is present, otherwise return that its re-targettable | |
301 | * if we are in polling mode. | |
302 | */ | |
ff741906 AR |
303 | if (cpe_vector > 0) { |
304 | if (acpi_cpei_override || force_cpei_retarget) | |
305 | return 1; | |
306 | else | |
307 | return 0; | |
308 | } | |
309 | return 1; | |
55e59c51 AR |
310 | } |
311 | ||
312 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
313 | { | |
314 | unsigned int logical_id; | |
315 | ||
316 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
317 | ||
318 | if (logical_id == cpu) | |
319 | return 1; | |
320 | else | |
321 | return 0; | |
322 | } | |
323 | ||
324 | void set_cpei_target_cpu(unsigned int cpu) | |
325 | { | |
326 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
327 | } | |
b88e9265 | 328 | #endif |
55e59c51 AR |
329 | |
330 | unsigned int get_cpei_target_cpu(void) | |
331 | { | |
332 | return acpi_cpei_phys_cpuid; | |
333 | } | |
334 | ||
1da177e4 | 335 | static int __init |
5f3b1a8b | 336 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 337 | const unsigned long end) |
1da177e4 | 338 | { |
5f3b1a8b | 339 | struct acpi_madt_interrupt_override *p; |
1da177e4 | 340 | |
5f3b1a8b | 341 | p = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
342 | |
343 | if (BAD_MADT_ENTRY(p, end)) | |
344 | return -EINVAL; | |
345 | ||
5f3b1a8b AS |
346 | iosapic_override_isa_irq(p->source_irq, p->global_irq, |
347 | ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == | |
348 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
349 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
350 | ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
351 | ACPI_MADT_TRIGGER_EDGE) ? | |
352 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
353 | return 0; |
354 | } | |
355 | ||
1da177e4 | 356 | static int __init |
5f3b1a8b | 357 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 358 | { |
5f3b1a8b | 359 | struct acpi_madt_nmi_source *nmi_src; |
1da177e4 | 360 | |
5f3b1a8b | 361 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
362 | |
363 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
364 | return -EINVAL; | |
365 | ||
366 | /* TBD: Support nimsrc entries */ | |
367 | return 0; | |
368 | } | |
369 | ||
4be44fcd | 370 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 371 | { |
4be44fcd | 372 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
373 | |
374 | /* | |
375 | * Unfortunately ITC_DRIFT is not yet part of the | |
376 | * official SAL spec, so the ITC_DRIFT bit is not | |
377 | * set by the BIOS on this hardware. | |
378 | */ | |
379 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
380 | ||
381 | cyclone_setup(); | |
382 | } | |
383 | } | |
384 | ||
5f3b1a8b | 385 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 386 | { |
5f3b1a8b | 387 | if (!table) |
1da177e4 LT |
388 | return -EINVAL; |
389 | ||
5f3b1a8b | 390 | acpi_madt = (struct acpi_table_madt *)table; |
1da177e4 | 391 | |
55e59c51 AR |
392 | acpi_madt_rev = acpi_madt->header.revision; |
393 | ||
1da177e4 LT |
394 | /* remember the value for reference after free_initmem() */ |
395 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 396 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 | 397 | #else |
5f3b1a8b | 398 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
1da177e4 LT |
399 | #endif |
400 | iosapic_system_init(has_8259); | |
401 | ||
402 | /* Get base address of IPI Message Block */ | |
403 | ||
5f3b1a8b AS |
404 | if (acpi_madt->address) |
405 | ipi_base_addr = ioremap(acpi_madt->address, 0); | |
1da177e4 LT |
406 | |
407 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
408 | ||
409 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 410 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
411 | |
412 | return 0; | |
413 | } | |
414 | ||
1da177e4 LT |
415 | #ifdef CONFIG_ACPI_NUMA |
416 | ||
417 | #undef SLIT_DEBUG | |
418 | ||
419 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
420 | ||
4be44fcd | 421 | static int __initdata srat_num_cpus; /* number of cpus */ |
1da177e4 LT |
422 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; |
423 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
424 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 | 425 | static struct acpi_table_slit __initdata *slit_table; |
2c6e6db4 | 426 | cpumask_t early_cpu_possible_map = CPU_MASK_NONE; |
1da177e4 | 427 | |
5f3b1a8b | 428 | static int get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) |
3ad5ef8b JS |
429 | { |
430 | int pxm; | |
431 | ||
5f3b1a8b | 432 | pxm = pa->proximity_domain_lo; |
3ad5ef8b | 433 | if (ia64_platform_is("sn2")) |
5f3b1a8b | 434 | pxm += pa->proximity_domain_hi[0] << 8; |
3ad5ef8b JS |
435 | return pxm; |
436 | } | |
437 | ||
5f3b1a8b | 438 | static int get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) |
3ad5ef8b JS |
439 | { |
440 | int pxm; | |
441 | ||
442 | pxm = ma->proximity_domain; | |
defad230 AS |
443 | if (!ia64_platform_is("sn2")) |
444 | pxm &= 0xff; | |
5f3b1a8b | 445 | |
3ad5ef8b JS |
446 | return pxm; |
447 | } | |
448 | ||
1da177e4 LT |
449 | /* |
450 | * ACPI 2.0 SLIT (System Locality Information Table) | |
451 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
452 | */ | |
4be44fcd | 453 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
454 | { |
455 | u32 len; | |
456 | ||
457 | len = sizeof(struct acpi_table_header) + 8 | |
5f3b1a8b | 458 | + slit->locality_count * slit->locality_count; |
1da177e4 | 459 | if (slit->header.length != len) { |
4be44fcd LB |
460 | printk(KERN_ERR |
461 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 LT |
462 | len, slit->header.length); |
463 | memset(numa_slit, 10, sizeof(numa_slit)); | |
464 | return; | |
465 | } | |
466 | slit_table = slit; | |
467 | } | |
468 | ||
469 | void __init | |
5f3b1a8b | 470 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
1da177e4 | 471 | { |
3ad5ef8b JS |
472 | int pxm; |
473 | ||
5f3b1a8b | 474 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
d903cea3 KK |
475 | return; |
476 | ||
3ad5ef8b JS |
477 | pxm = get_processor_proximity_domain(pa); |
478 | ||
1da177e4 | 479 | /* record this node in proximity bitmap */ |
3ad5ef8b | 480 | pxm_bit_set(pxm); |
1da177e4 | 481 | |
4be44fcd | 482 | node_cpuid[srat_num_cpus].phys_id = |
5f3b1a8b | 483 | (pa->apic_id << 8) | (pa->local_sapic_eid); |
1da177e4 | 484 | /* nid should be overridden as logical node id later */ |
3ad5ef8b | 485 | node_cpuid[srat_num_cpus].nid = pxm; |
2c6e6db4 | 486 | cpu_set(srat_num_cpus, early_cpu_possible_map); |
1da177e4 LT |
487 | srat_num_cpus++; |
488 | } | |
489 | ||
490 | void __init | |
5f3b1a8b | 491 | acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) |
1da177e4 LT |
492 | { |
493 | unsigned long paddr, size; | |
3ad5ef8b | 494 | int pxm; |
1da177e4 LT |
495 | struct node_memblk_s *p, *q, *pend; |
496 | ||
3ad5ef8b | 497 | pxm = get_memory_proximity_domain(ma); |
1da177e4 LT |
498 | |
499 | /* fill node memory chunk structure */ | |
5f3b1a8b AS |
500 | paddr = ma->base_address; |
501 | size = ma->length; | |
1da177e4 LT |
502 | |
503 | /* Ignore disabled entries */ | |
5f3b1a8b | 504 | if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) |
1da177e4 LT |
505 | return; |
506 | ||
507 | /* record this node in proximity bitmap */ | |
508 | pxm_bit_set(pxm); | |
509 | ||
510 | /* Insertion sort based on base address */ | |
511 | pend = &node_memblk[num_node_memblks]; | |
512 | for (p = &node_memblk[0]; p < pend; p++) { | |
513 | if (paddr < p->start_paddr) | |
514 | break; | |
515 | } | |
516 | if (p < pend) { | |
517 | for (q = pend - 1; q >= p; q--) | |
518 | *(q + 1) = *q; | |
519 | } | |
520 | p->start_paddr = paddr; | |
521 | p->size = size; | |
522 | p->nid = pxm; | |
523 | num_node_memblks++; | |
524 | } | |
525 | ||
4be44fcd | 526 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
527 | { |
528 | int i, j, node_from, node_to; | |
529 | ||
530 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
531 | if (srat_num_cpus == 0) { | |
532 | node_set_online(0); | |
533 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
534 | return; | |
535 | } | |
536 | ||
537 | /* | |
538 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
539 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
540 | */ | |
1da177e4 LT |
541 | nodes_clear(node_online_map); |
542 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
543 | if (pxm_bit_test(i)) { | |
762834e8 | 544 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
545 | node_set_online(nid); |
546 | } | |
547 | } | |
548 | ||
549 | /* set logical node id in memory chunk structure */ | |
550 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 551 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
552 | |
553 | /* assign memory bank numbers for each chunk on each node */ | |
554 | for_each_online_node(i) { | |
555 | int bank; | |
556 | ||
557 | bank = 0; | |
558 | for (j = 0; j < num_node_memblks; j++) | |
559 | if (node_memblk[j].nid == i) | |
560 | node_memblk[j].bank = bank++; | |
561 | } | |
562 | ||
563 | /* set logical node id in cpu structure */ | |
2c6e6db4 | 564 | for_each_possible_early_cpu(i) |
762834e8 | 565 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 566 | |
4be44fcd LB |
567 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
568 | num_online_nodes()); | |
569 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
570 | num_node_memblks); | |
1da177e4 | 571 | |
4be44fcd LB |
572 | if (!slit_table) |
573 | return; | |
1da177e4 | 574 | memset(numa_slit, -1, sizeof(numa_slit)); |
5f3b1a8b | 575 | for (i = 0; i < slit_table->locality_count; i++) { |
1da177e4 LT |
576 | if (!pxm_bit_test(i)) |
577 | continue; | |
762834e8 | 578 | node_from = pxm_to_node(i); |
5f3b1a8b | 579 | for (j = 0; j < slit_table->locality_count; j++) { |
1da177e4 LT |
580 | if (!pxm_bit_test(j)) |
581 | continue; | |
762834e8 | 582 | node_to = pxm_to_node(j); |
1da177e4 | 583 | node_distance(node_from, node_to) = |
5f3b1a8b | 584 | slit_table->entry[i * slit_table->locality_count + j]; |
1da177e4 LT |
585 | } |
586 | } | |
587 | ||
588 | #ifdef SLIT_DEBUG | |
589 | printk("ACPI 2.0 SLIT locality table:\n"); | |
590 | for_each_online_node(i) { | |
591 | for_each_online_node(j) | |
4be44fcd | 592 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
593 | printk("\n"); |
594 | } | |
595 | #endif | |
596 | } | |
4be44fcd | 597 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 598 | |
1f3a6a15 KK |
599 | /* |
600 | * success: return IRQ number (>=0) | |
601 | * failure: return < 0 | |
602 | */ | |
cb654695 | 603 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 | 604 | { |
3948ec94 JK |
605 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
606 | return gsi; | |
607 | ||
1da177e4 LT |
608 | if (has_8259 && gsi < 16) |
609 | return isa_irq_to_vector(gsi); | |
610 | ||
611 | return iosapic_register_intr(gsi, | |
cb654695 | 612 | (polarity == |
4be44fcd LB |
613 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
614 | IOSAPIC_POL_LOW, | |
cb654695 | 615 | (triggering == |
4be44fcd LB |
616 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
617 | IOSAPIC_LEVEL); | |
1da177e4 | 618 | } |
4be44fcd | 619 | |
4be44fcd | 620 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 | 621 | { |
72253943 JK |
622 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
623 | return; | |
624 | ||
1da177e4 LT |
625 | iosapic_unregister_intr(gsi); |
626 | } | |
4be44fcd | 627 | |
5f3b1a8b | 628 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 LT |
629 | { |
630 | struct acpi_table_header *fadt_header; | |
cee324b1 | 631 | struct acpi_table_fadt *fadt; |
1da177e4 | 632 | |
5f3b1a8b | 633 | if (!table) |
1da177e4 LT |
634 | return -EINVAL; |
635 | ||
5f3b1a8b | 636 | fadt_header = (struct acpi_table_header *)table; |
1da177e4 | 637 | if (fadt_header->revision != 3) |
4be44fcd | 638 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 639 | |
cee324b1 | 640 | fadt = (struct acpi_table_fadt *)fadt_header; |
1da177e4 | 641 | |
cee324b1 | 642 | acpi_register_gsi(fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); |
1da177e4 LT |
643 | return 0; |
644 | } | |
645 | ||
4be44fcd | 646 | int __init acpi_boot_init(void) |
1da177e4 LT |
647 | { |
648 | ||
649 | /* | |
650 | * MADT | |
651 | * ---- | |
652 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
653 | * Note that this table provides platform SMP configuration | |
654 | * information -- the successor to MPS tables. | |
655 | */ | |
656 | ||
db2d4ccd | 657 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
658 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
659 | goto skip_madt; | |
660 | } | |
661 | ||
662 | /* Local APIC */ | |
663 | ||
4be44fcd | 664 | if (acpi_table_parse_madt |
5f3b1a8b | 665 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
4be44fcd LB |
666 | printk(KERN_ERR PREFIX |
667 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 668 | |
5f3b1a8b | 669 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, acpi_parse_lsapic, NR_CPUS) |
4be44fcd LB |
670 | < 1) |
671 | printk(KERN_ERR PREFIX | |
672 | "Error parsing MADT - no LAPIC entries\n"); | |
1da177e4 | 673 | |
5f3b1a8b | 674 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
4be44fcd | 675 | < 0) |
1da177e4 LT |
676 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
677 | ||
678 | /* I/O APIC */ | |
679 | ||
4be44fcd | 680 | if (acpi_table_parse_madt |
7f6ff62a GB |
681 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { |
682 | if (!ia64_platform_is("sn2")) | |
683 | printk(KERN_ERR PREFIX | |
684 | "Error parsing MADT - no IOSAPIC entries\n"); | |
685 | } | |
1da177e4 LT |
686 | |
687 | /* System-Level Interrupt Routing */ | |
688 | ||
4be44fcd | 689 | if (acpi_table_parse_madt |
5f3b1a8b | 690 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
4be44fcd LB |
691 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
692 | printk(KERN_ERR PREFIX | |
693 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 694 | |
4be44fcd | 695 | if (acpi_table_parse_madt |
5f3b1a8b | 696 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
4be44fcd LB |
697 | printk(KERN_ERR PREFIX |
698 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 | 699 | |
5f3b1a8b | 700 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
1da177e4 | 701 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
4be44fcd | 702 | skip_madt: |
1da177e4 LT |
703 | |
704 | /* | |
705 | * FADT says whether a legacy keyboard controller is present. | |
706 | * The FADT also contains an SCI_INT line, by which the system | |
707 | * gets interrupts such as power and sleep buttons. If it's not | |
708 | * on a Legacy interrupt, it needs to be setup. | |
709 | */ | |
db2d4ccd | 710 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
1da177e4 LT |
711 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
712 | ||
713 | #ifdef CONFIG_SMP | |
714 | if (available_cpus == 0) { | |
715 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
716 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
4be44fcd LB |
717 | smp_boot_data.cpu_phys_id[available_cpus] = |
718 | hard_smp_processor_id(); | |
719 | available_cpus = 1; /* We've got at least one of these, no? */ | |
1da177e4 LT |
720 | } |
721 | smp_boot_data.cpu_count = available_cpus; | |
722 | ||
723 | smp_build_cpu_map(); | |
724 | # ifdef CONFIG_ACPI_NUMA | |
725 | if (srat_num_cpus == 0) { | |
726 | int cpu, i = 1; | |
727 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
728 | if (smp_boot_data.cpu_phys_id[cpu] != |
729 | hard_smp_processor_id()) | |
730 | node_cpuid[i++].phys_id = | |
731 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 732 | } |
1da177e4 | 733 | # endif |
8d7e3517 TL |
734 | #endif |
735 | #ifdef CONFIG_ACPI_NUMA | |
736 | build_cpu_to_node_map(); | |
1da177e4 LT |
737 | #endif |
738 | /* Make boot-up look pretty */ | |
4be44fcd LB |
739 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, |
740 | total_cpus); | |
1da177e4 LT |
741 | return 0; |
742 | } | |
743 | ||
4be44fcd | 744 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 | 745 | { |
3c3738c8 | 746 | int tmp; |
1da177e4 LT |
747 | |
748 | if (has_8259 && gsi < 16) | |
749 | *irq = isa_irq_to_vector(gsi); | |
750 | else { | |
3c3738c8 KK |
751 | tmp = gsi_to_irq(gsi); |
752 | if (tmp == -1) | |
1da177e4 | 753 | return -1; |
3c3738c8 | 754 | *irq = tmp; |
1da177e4 LT |
755 | } |
756 | return 0; | |
757 | } | |
758 | ||
759 | /* | |
760 | * ACPI based hotplug CPU support | |
761 | */ | |
762 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
763 | static | |
4be44fcd | 764 | int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) |
1da177e4 LT |
765 | { |
766 | #ifdef CONFIG_ACPI_NUMA | |
4be44fcd | 767 | int pxm_id; |
08992986 | 768 | int nid; |
1da177e4 LT |
769 | |
770 | pxm_id = acpi_get_pxm(handle); | |
1da177e4 | 771 | /* |
08992986 KH |
772 | * We don't have cpu-only-node hotadd. But if the system equips |
773 | * SRAT table, pxm is already found and node is ready. | |
774 | * So, just pxm_to_nid(pxm) is OK. | |
775 | * This code here is for the system which doesn't have full SRAT | |
776 | * table for possible cpus. | |
1da177e4 | 777 | */ |
08992986 | 778 | nid = acpi_map_pxm_to_node(pxm_id); |
4be44fcd | 779 | node_cpuid[cpu].phys_id = physid; |
08992986 | 780 | node_cpuid[cpu].nid = nid; |
1da177e4 | 781 | #endif |
4be44fcd | 782 | return (0); |
1da177e4 LT |
783 | } |
784 | ||
a6b14fa6 AR |
785 | int additional_cpus __initdata = -1; |
786 | ||
787 | static __init int setup_additional_cpus(char *s) | |
788 | { | |
789 | if (s) | |
790 | additional_cpus = simple_strtol(s, NULL, 0); | |
791 | ||
792 | return 0; | |
793 | } | |
794 | ||
795 | early_param("additional_cpus", setup_additional_cpus); | |
796 | ||
797 | /* | |
72fdbdce | 798 | * cpu_possible_map should be static, it cannot change as CPUs |
a6b14fa6 AR |
799 | * are onlined, or offlined. The reason is per-cpu data-structures |
800 | * are allocated by some modules at init time, and dont expect to | |
801 | * do this dynamically on cpu arrival/departure. | |
802 | * cpu_present_map on the other hand can change dynamically. | |
803 | * In case when cpu_hotplug is not compiled, then we resort to current | |
804 | * behaviour, which is cpu_possible == cpu_present. | |
805 | * - Ashok Raj | |
806 | * | |
807 | * Three ways to find out the number of additional hotplug CPUs: | |
808 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
809 | * - The user can overwrite it with additional_cpus=NUM | |
810 | * - Otherwise don't reserve additional CPUs. | |
811 | */ | |
812 | __init void prefill_possible_map(void) | |
813 | { | |
814 | int i; | |
815 | int possible, disabled_cpus; | |
816 | ||
817 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 818 | |
a6b14fa6 | 819 | if (additional_cpus == -1) { |
8f8b1138 | 820 | if (disabled_cpus > 0) |
a6b14fa6 | 821 | additional_cpus = disabled_cpus; |
8f8b1138 | 822 | else |
a6b14fa6 | 823 | additional_cpus = 0; |
8f8b1138 AR |
824 | } |
825 | ||
826 | possible = available_cpus + additional_cpus; | |
827 | ||
a6b14fa6 AR |
828 | if (possible > NR_CPUS) |
829 | possible = NR_CPUS; | |
830 | ||
831 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 832 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
833 | |
834 | for (i = 0; i < possible; i++) | |
835 | cpu_set(i, cpu_possible_map); | |
836 | } | |
837 | ||
4be44fcd | 838 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 839 | { |
4be44fcd | 840 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 841 | union acpi_object *obj; |
5f3b1a8b | 842 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 LT |
843 | cpumask_t tmp_map; |
844 | long physid; | |
845 | int cpu; | |
4be44fcd | 846 | |
1da177e4 LT |
847 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
848 | return -EINVAL; | |
849 | ||
4be44fcd | 850 | if (!buffer.length || !buffer.pointer) |
1da177e4 | 851 | return -EINVAL; |
4be44fcd | 852 | |
1da177e4 | 853 | obj = buffer.pointer; |
5f3b1a8b AS |
854 | if (obj->type != ACPI_TYPE_BUFFER) |
855 | { | |
02438d87 | 856 | kfree(buffer.pointer); |
1da177e4 LT |
857 | return -EINVAL; |
858 | } | |
859 | ||
5f3b1a8b | 860 | lsapic = (struct acpi_madt_local_sapic *)obj->buffer.pointer; |
1da177e4 | 861 | |
5f3b1a8b | 862 | if ((lsapic->header.type != ACPI_MADT_TYPE_LOCAL_SAPIC) || |
965d7472 | 863 | (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))) { |
02438d87 | 864 | kfree(buffer.pointer); |
1da177e4 LT |
865 | return -EINVAL; |
866 | } | |
867 | ||
4be44fcd | 868 | physid = ((lsapic->id << 8) | (lsapic->eid)); |
1da177e4 | 869 | |
02438d87 | 870 | kfree(buffer.pointer); |
1da177e4 LT |
871 | buffer.length = ACPI_ALLOCATE_BUFFER; |
872 | buffer.pointer = NULL; | |
873 | ||
874 | cpus_complement(tmp_map, cpu_present_map); | |
875 | cpu = first_cpu(tmp_map); | |
4be44fcd | 876 | if (cpu >= NR_CPUS) |
1da177e4 LT |
877 | return -EINVAL; |
878 | ||
879 | acpi_map_cpu2node(handle, cpu, physid); | |
880 | ||
4be44fcd | 881 | cpu_set(cpu, cpu_present_map); |
1da177e4 | 882 | ia64_cpu_to_sapicid[cpu] = physid; |
1da177e4 LT |
883 | |
884 | *pcpu = cpu; | |
4be44fcd | 885 | return (0); |
1da177e4 | 886 | } |
1da177e4 | 887 | |
4be44fcd | 888 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 889 | |
4be44fcd | 890 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 891 | { |
1da177e4 | 892 | ia64_cpu_to_sapicid[cpu] = -1; |
4be44fcd | 893 | cpu_clear(cpu, cpu_present_map); |
1da177e4 LT |
894 | |
895 | #ifdef CONFIG_ACPI_NUMA | |
896 | /* NUMA specific cleanup's */ | |
897 | #endif | |
898 | ||
4be44fcd | 899 | return (0); |
1da177e4 | 900 | } |
4be44fcd | 901 | |
1da177e4 | 902 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 903 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 LT |
904 | |
905 | #ifdef CONFIG_ACPI_NUMA | |
650316f1 | 906 | static acpi_status __devinit |
4be44fcd | 907 | acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) |
1da177e4 | 908 | { |
4be44fcd | 909 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 910 | union acpi_object *obj; |
5f3b1a8b | 911 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 912 | unsigned int gsi_base; |
bb0fc085 | 913 | int pxm, node; |
1da177e4 LT |
914 | |
915 | /* Only care about objects w/ a method that returns the MADT */ | |
916 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
917 | return AE_OK; | |
918 | ||
919 | if (!buffer.length || !buffer.pointer) | |
920 | return AE_OK; | |
921 | ||
922 | obj = buffer.pointer; | |
923 | if (obj->type != ACPI_TYPE_BUFFER || | |
924 | obj->buffer.length < sizeof(*iosapic)) { | |
02438d87 | 925 | kfree(buffer.pointer); |
1da177e4 LT |
926 | return AE_OK; |
927 | } | |
928 | ||
5f3b1a8b | 929 | iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; |
1da177e4 | 930 | |
5f3b1a8b | 931 | if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { |
02438d87 | 932 | kfree(buffer.pointer); |
1da177e4 LT |
933 | return AE_OK; |
934 | } | |
935 | ||
936 | gsi_base = iosapic->global_irq_base; | |
937 | ||
02438d87 | 938 | kfree(buffer.pointer); |
1da177e4 LT |
939 | |
940 | /* | |
bb0fc085 | 941 | * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell |
1da177e4 LT |
942 | * us which node to associate this with. |
943 | */ | |
bb0fc085 AW |
944 | pxm = acpi_get_pxm(handle); |
945 | if (pxm < 0) | |
1da177e4 | 946 | return AE_OK; |
1da177e4 | 947 | |
762834e8 | 948 | node = pxm_to_node(pxm); |
1da177e4 LT |
949 | |
950 | if (node >= MAX_NUMNODES || !node_online(node) || | |
951 | cpus_empty(node_to_cpumask(node))) | |
952 | return AE_OK; | |
953 | ||
954 | /* We know a gsi to node mapping! */ | |
955 | map_iosapic_to_node(gsi_base, node); | |
956 | return AE_OK; | |
957 | } | |
650316f1 BH |
958 | |
959 | static int __init | |
960 | acpi_map_iosapics (void) | |
961 | { | |
962 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); | |
963 | return 0; | |
964 | } | |
965 | ||
966 | fs_initcall(acpi_map_iosapics); | |
967 | #endif /* CONFIG_ACPI_NUMA */ | |
b1bb248a | 968 | |
4be44fcd | 969 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a | 970 | { |
0e888adc KK |
971 | int err; |
972 | ||
973 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
974 | return err; | |
975 | ||
24b8e0cc | 976 | #ifdef CONFIG_ACPI_NUMA |
0e888adc | 977 | acpi_map_iosapic(handle, 0, NULL, NULL); |
4be44fcd | 978 | #endif /* CONFIG_ACPI_NUMA */ |
0e888adc KK |
979 | |
980 | return 0; | |
b1bb248a | 981 | } |
4be44fcd | 982 | |
b1bb248a KK |
983 | EXPORT_SYMBOL(acpi_register_ioapic); |
984 | ||
4be44fcd | 985 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a | 986 | { |
0e888adc | 987 | return iosapic_remove(gsi_base); |
b1bb248a | 988 | } |
4be44fcd | 989 | |
b1bb248a KK |
990 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
991 | ||
e8b2fd01 LB |
992 | /* |
993 | * acpi_save_state_mem() - save kernel state | |
994 | * | |
995 | * TBD when when IA64 starts to support suspend... | |
996 | */ | |
997 | int acpi_save_state_mem(void) { return 0; } | |
998 | ||
999 | /* | |
1000 | * acpi_restore_state() | |
1001 | */ | |
1002 | void acpi_restore_state_mem(void) {} | |
1003 | ||
1004 | /* | |
1005 | * do_suspend_lowlevel() | |
1006 | */ | |
1007 | void do_suspend_lowlevel(void) {} | |
1008 | ||
888ba6c6 | 1009 | #endif /* CONFIG_ACPI */ |