]>
Commit | Line | Data |
---|---|---|
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> | |
5a0e3ad6 | 47 | #include <linux/slab.h> |
d8191fa4 | 48 | #include <acpi/processor.h> |
1da177e4 LT |
49 | #include <asm/io.h> |
50 | #include <asm/iosapic.h> | |
51 | #include <asm/machvec.h> | |
52 | #include <asm/page.h> | |
1da177e4 LT |
53 | #include <asm/numa.h> |
54 | #include <asm/sal.h> | |
55 | #include <asm/cyclone.h> | |
56 | ||
1da177e4 LT |
57 | #define PREFIX "ACPI: " |
58 | ||
247dba58 | 59 | int acpi_lapic; |
55e59c51 AR |
60 | unsigned int acpi_cpei_override; |
61 | unsigned int acpi_cpei_phys_cpuid; | |
62 | ||
e8b2fd01 LB |
63 | unsigned long acpi_wakeup_address = 0; |
64 | ||
239665a3 LB |
65 | #ifdef CONFIG_IA64_GENERIC |
66 | static unsigned long __init acpi_find_rsdp(void) | |
67 | { | |
68 | unsigned long rsdp_phys = 0; | |
69 | ||
70 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) | |
71 | rsdp_phys = efi.acpi20; | |
72 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
73 | printk(KERN_WARNING PREFIX | |
74 | "v1.0/r0.71 tables no longer supported\n"); | |
75 | return rsdp_phys; | |
76 | } | |
239665a3 | 77 | |
d57c4a38 TL |
78 | const char __init * |
79 | acpi_get_sysname(void) | |
1da177e4 | 80 | { |
1da177e4 | 81 | unsigned long rsdp_phys; |
ad71860a | 82 | struct acpi_table_rsdp *rsdp; |
1da177e4 LT |
83 | struct acpi_table_xsdt *xsdt; |
84 | struct acpi_table_header *hdr; | |
d3f13810 | 85 | #ifdef CONFIG_INTEL_IOMMU |
62fdd767 FY |
86 | u64 i, nentries; |
87 | #endif | |
1da177e4 LT |
88 | |
89 | rsdp_phys = acpi_find_rsdp(); | |
90 | if (!rsdp_phys) { | |
4be44fcd LB |
91 | printk(KERN_ERR |
92 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
1da177e4 LT |
93 | return "dig"; |
94 | } | |
95 | ||
ad71860a AS |
96 | rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); |
97 | if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { | |
4be44fcd LB |
98 | printk(KERN_ERR |
99 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
100 | return "dig"; |
101 | } | |
102 | ||
5f3b1a8b | 103 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); |
1da177e4 | 104 | hdr = &xsdt->header; |
ad71860a | 105 | if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { |
4be44fcd LB |
106 | printk(KERN_ERR |
107 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
108 | return "dig"; |
109 | } | |
110 | ||
111 | if (!strcmp(hdr->oem_id, "HP")) { | |
112 | return "hpzx1"; | |
4be44fcd | 113 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
22246614 JS |
114 | if (!strcmp(hdr->oem_table_id + 4, "UV")) |
115 | return "uv"; | |
116 | else | |
117 | return "sn2"; | |
1da177e4 LT |
118 | } |
119 | ||
d3f13810 | 120 | #ifdef CONFIG_INTEL_IOMMU |
62fdd767 FY |
121 | /* Look for Intel IOMMU */ |
122 | nentries = (hdr->length - sizeof(*hdr)) / | |
123 | sizeof(xsdt->table_offset_entry[0]); | |
124 | for (i = 0; i < nentries; i++) { | |
125 | hdr = __va(xsdt->table_offset_entry[i]); | |
126 | if (strncmp(hdr->signature, ACPI_SIG_DMAR, | |
127 | sizeof(ACPI_SIG_DMAR) - 1) == 0) | |
128 | return "dig_vtd"; | |
129 | } | |
130 | #endif | |
131 | ||
1da177e4 | 132 | return "dig"; |
1da177e4 | 133 | } |
d868080d | 134 | #endif /* CONFIG_IA64_GENERIC */ |
1da177e4 LT |
135 | |
136 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
137 | ||
138 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
139 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
140 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
141 | }; | |
142 | ||
143 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
144 | ||
145 | /* | |
146 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
147 | * a generic platform event. Currently only CPEI is implemented. | |
148 | */ | |
4be44fcd | 149 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
150 | { |
151 | int vector = -1; | |
152 | ||
153 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
154 | /* corrected platform error interrupt */ | |
155 | vector = platform_intr_list[int_type]; | |
156 | } else | |
4be44fcd LB |
157 | printk(KERN_ERR |
158 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
159 | return vector; |
160 | } | |
161 | ||
2fdf0741 | 162 | char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
163 | { |
164 | return __va(phys_addr); | |
165 | } | |
166 | ||
970ec1a8 | 167 | void __init __acpi_unmap_table(char *map, unsigned long size) |
7d97277b YL |
168 | { |
169 | } | |
170 | ||
1da177e4 LT |
171 | /* -------------------------------------------------------------------------- |
172 | Boot-time Table Parsing | |
173 | -------------------------------------------------------------------------- */ | |
174 | ||
4be44fcd LB |
175 | static int available_cpus __initdata; |
176 | struct acpi_table_madt *acpi_madt __initdata; | |
177 | static u8 has_8259; | |
1da177e4 LT |
178 | |
179 | static int __init | |
5f3b1a8b | 180 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 181 | const unsigned long end) |
1da177e4 | 182 | { |
5f3b1a8b | 183 | struct acpi_madt_local_apic_override *lapic; |
1da177e4 | 184 | |
5f3b1a8b | 185 | lapic = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
186 | |
187 | if (BAD_MADT_ENTRY(lapic, end)) | |
188 | return -EINVAL; | |
189 | ||
190 | if (lapic->address) { | |
191 | iounmap(ipi_base_addr); | |
192 | ipi_base_addr = ioremap(lapic->address, 0); | |
193 | } | |
194 | return 0; | |
195 | } | |
196 | ||
1da177e4 | 197 | static int __init |
5f3b1a8b | 198 | acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 199 | { |
5f3b1a8b | 200 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 201 | |
5f3b1a8b | 202 | lsapic = (struct acpi_madt_local_sapic *)header; |
1da177e4 | 203 | |
5f3b1a8b | 204 | /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ |
1da177e4 | 205 | |
5f3b1a8b | 206 | if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { |
1da177e4 | 207 | #ifdef CONFIG_SMP |
4be44fcd LB |
208 | smp_boot_data.cpu_phys_id[available_cpus] = |
209 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 210 | #endif |
1da177e4 LT |
211 | ++available_cpus; |
212 | } | |
213 | ||
214 | total_cpus++; | |
215 | return 0; | |
216 | } | |
217 | ||
1da177e4 | 218 | static int __init |
5f3b1a8b | 219 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 220 | { |
5f3b1a8b | 221 | struct acpi_madt_local_apic_nmi *lacpi_nmi; |
1da177e4 | 222 | |
5f3b1a8b | 223 | lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
224 | |
225 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
226 | return -EINVAL; | |
227 | ||
228 | /* TBD: Support lapic_nmi entries */ | |
229 | return 0; | |
230 | } | |
231 | ||
1da177e4 | 232 | static int __init |
5f3b1a8b | 233 | acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 234 | { |
5f3b1a8b | 235 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 236 | |
5f3b1a8b | 237 | iosapic = (struct acpi_madt_io_sapic *)header; |
1da177e4 LT |
238 | |
239 | if (BAD_MADT_ENTRY(iosapic, end)) | |
240 | return -EINVAL; | |
241 | ||
0e888adc | 242 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
243 | } |
244 | ||
5810452d LB |
245 | static unsigned int __initdata acpi_madt_rev; |
246 | ||
1da177e4 | 247 | static int __init |
5f3b1a8b | 248 | acpi_parse_plat_int_src(struct acpi_subtable_header * header, |
4be44fcd | 249 | const unsigned long end) |
1da177e4 | 250 | { |
5f3b1a8b | 251 | struct acpi_madt_interrupt_source *plintsrc; |
1da177e4 LT |
252 | int vector; |
253 | ||
5f3b1a8b | 254 | plintsrc = (struct acpi_madt_interrupt_source *)header; |
1da177e4 LT |
255 | |
256 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
257 | return -EINVAL; | |
258 | ||
259 | /* | |
260 | * Get vector assignment for this interrupt, set attributes, | |
261 | * and program the IOSAPIC routing table. | |
262 | */ | |
263 | vector = iosapic_register_platform_intr(plintsrc->type, | |
264 | plintsrc->global_irq, | |
5f3b1a8b | 265 | plintsrc->io_sapic_vector, |
1da177e4 LT |
266 | plintsrc->eid, |
267 | plintsrc->id, | |
5f3b1a8b AS |
268 | ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == |
269 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
270 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
271 | ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
272 | ACPI_MADT_TRIGGER_EDGE) ? | |
273 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
274 | |
275 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 | 276 | if (acpi_madt_rev > 1) { |
5f3b1a8b | 277 | acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; |
55e59c51 AR |
278 | } |
279 | ||
280 | /* | |
281 | * Save the physical id, so we can check when its being removed | |
282 | */ | |
283 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
284 | ||
1da177e4 LT |
285 | return 0; |
286 | } | |
287 | ||
b88e9265 | 288 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
289 | unsigned int can_cpei_retarget(void) |
290 | { | |
291 | extern int cpe_vector; | |
ff741906 | 292 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
293 | |
294 | /* | |
295 | * Only if CPEI is supported and the override flag | |
296 | * is present, otherwise return that its re-targettable | |
297 | * if we are in polling mode. | |
298 | */ | |
ff741906 AR |
299 | if (cpe_vector > 0) { |
300 | if (acpi_cpei_override || force_cpei_retarget) | |
301 | return 1; | |
302 | else | |
303 | return 0; | |
304 | } | |
305 | return 1; | |
55e59c51 AR |
306 | } |
307 | ||
308 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
309 | { | |
310 | unsigned int logical_id; | |
311 | ||
312 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
313 | ||
314 | if (logical_id == cpu) | |
315 | return 1; | |
316 | else | |
317 | return 0; | |
318 | } | |
319 | ||
320 | void set_cpei_target_cpu(unsigned int cpu) | |
321 | { | |
322 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
323 | } | |
b88e9265 | 324 | #endif |
55e59c51 AR |
325 | |
326 | unsigned int get_cpei_target_cpu(void) | |
327 | { | |
328 | return acpi_cpei_phys_cpuid; | |
329 | } | |
330 | ||
1da177e4 | 331 | static int __init |
5f3b1a8b | 332 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 333 | const unsigned long end) |
1da177e4 | 334 | { |
5f3b1a8b | 335 | struct acpi_madt_interrupt_override *p; |
1da177e4 | 336 | |
5f3b1a8b | 337 | p = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
338 | |
339 | if (BAD_MADT_ENTRY(p, end)) | |
340 | return -EINVAL; | |
341 | ||
5f3b1a8b AS |
342 | iosapic_override_isa_irq(p->source_irq, p->global_irq, |
343 | ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == | |
0577bb66 LJ |
344 | ACPI_MADT_POLARITY_ACTIVE_LOW) ? |
345 | IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH, | |
5f3b1a8b | 346 | ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == |
0577bb66 LJ |
347 | ACPI_MADT_TRIGGER_LEVEL) ? |
348 | IOSAPIC_LEVEL : IOSAPIC_EDGE); | |
1da177e4 LT |
349 | return 0; |
350 | } | |
351 | ||
1da177e4 | 352 | static int __init |
5f3b1a8b | 353 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 354 | { |
5f3b1a8b | 355 | struct acpi_madt_nmi_source *nmi_src; |
1da177e4 | 356 | |
5f3b1a8b | 357 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
358 | |
359 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
360 | return -EINVAL; | |
361 | ||
362 | /* TBD: Support nimsrc entries */ | |
363 | return 0; | |
364 | } | |
365 | ||
4be44fcd | 366 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 367 | { |
4be44fcd | 368 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
369 | |
370 | /* | |
371 | * Unfortunately ITC_DRIFT is not yet part of the | |
372 | * official SAL spec, so the ITC_DRIFT bit is not | |
373 | * set by the BIOS on this hardware. | |
374 | */ | |
375 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
376 | ||
377 | cyclone_setup(); | |
378 | } | |
379 | } | |
380 | ||
5f3b1a8b | 381 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 382 | { |
5f3b1a8b | 383 | if (!table) |
1da177e4 LT |
384 | return -EINVAL; |
385 | ||
5f3b1a8b | 386 | acpi_madt = (struct acpi_table_madt *)table; |
1da177e4 | 387 | |
55e59c51 AR |
388 | acpi_madt_rev = acpi_madt->header.revision; |
389 | ||
1da177e4 LT |
390 | /* remember the value for reference after free_initmem() */ |
391 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 392 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 | 393 | #else |
5f3b1a8b | 394 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
1da177e4 LT |
395 | #endif |
396 | iosapic_system_init(has_8259); | |
397 | ||
398 | /* Get base address of IPI Message Block */ | |
399 | ||
5f3b1a8b AS |
400 | if (acpi_madt->address) |
401 | ipi_base_addr = ioremap(acpi_madt->address, 0); | |
1da177e4 LT |
402 | |
403 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
404 | ||
405 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 406 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
407 | |
408 | return 0; | |
409 | } | |
410 | ||
1da177e4 LT |
411 | #ifdef CONFIG_ACPI_NUMA |
412 | ||
413 | #undef SLIT_DEBUG | |
414 | ||
415 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
416 | ||
4be44fcd | 417 | static int __initdata srat_num_cpus; /* number of cpus */ |
5b5e76e9 | 418 | static u32 pxm_flag[PXM_FLAG_LEN]; |
1da177e4 LT |
419 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) |
420 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 | 421 | static struct acpi_table_slit __initdata *slit_table; |
2c6e6db4 | 422 | cpumask_t early_cpu_possible_map = CPU_MASK_NONE; |
1da177e4 | 423 | |
9f10f6a5 KG |
424 | static int __init |
425 | get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) | |
3ad5ef8b JS |
426 | { |
427 | int pxm; | |
428 | ||
5f3b1a8b | 429 | pxm = pa->proximity_domain_lo; |
9f10f6a5 | 430 | if (ia64_platform_is("sn2") || acpi_srat_revision >= 2) |
5f3b1a8b | 431 | pxm += pa->proximity_domain_hi[0] << 8; |
3ad5ef8b JS |
432 | return pxm; |
433 | } | |
434 | ||
9f10f6a5 KG |
435 | static int __init |
436 | get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) | |
3ad5ef8b JS |
437 | { |
438 | int pxm; | |
439 | ||
440 | pxm = ma->proximity_domain; | |
9f10f6a5 | 441 | if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1) |
defad230 | 442 | pxm &= 0xff; |
5f3b1a8b | 443 | |
3ad5ef8b JS |
444 | return pxm; |
445 | } | |
446 | ||
1da177e4 LT |
447 | /* |
448 | * ACPI 2.0 SLIT (System Locality Information Table) | |
449 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
450 | */ | |
4be44fcd | 451 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
452 | { |
453 | u32 len; | |
454 | ||
455 | len = sizeof(struct acpi_table_header) + 8 | |
5f3b1a8b | 456 | + slit->locality_count * slit->locality_count; |
1da177e4 | 457 | if (slit->header.length != len) { |
4be44fcd LB |
458 | printk(KERN_ERR |
459 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 | 460 | len, slit->header.length); |
1da177e4 LT |
461 | return; |
462 | } | |
463 | slit_table = slit; | |
464 | } | |
465 | ||
466 | void __init | |
5f3b1a8b | 467 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
1da177e4 | 468 | { |
3ad5ef8b JS |
469 | int pxm; |
470 | ||
5f3b1a8b | 471 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
d903cea3 KK |
472 | return; |
473 | ||
05f2f274 TL |
474 | if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) { |
475 | printk_once(KERN_WARNING | |
dff0092b | 476 | "node_cpuid[%ld] is too small, may not be able to use all cpus\n", |
05f2f274 TL |
477 | ARRAY_SIZE(node_cpuid)); |
478 | return; | |
479 | } | |
3ad5ef8b JS |
480 | pxm = get_processor_proximity_domain(pa); |
481 | ||
1da177e4 | 482 | /* record this node in proximity bitmap */ |
3ad5ef8b | 483 | pxm_bit_set(pxm); |
1da177e4 | 484 | |
4be44fcd | 485 | node_cpuid[srat_num_cpus].phys_id = |
5f3b1a8b | 486 | (pa->apic_id << 8) | (pa->local_sapic_eid); |
1da177e4 | 487 | /* nid should be overridden as logical node id later */ |
3ad5ef8b | 488 | node_cpuid[srat_num_cpus].nid = pxm; |
2c6e6db4 | 489 | cpu_set(srat_num_cpus, early_cpu_possible_map); |
1da177e4 LT |
490 | srat_num_cpus++; |
491 | } | |
492 | ||
095adbb6 | 493 | int __init |
5f3b1a8b | 494 | acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) |
1da177e4 LT |
495 | { |
496 | unsigned long paddr, size; | |
3ad5ef8b | 497 | int pxm; |
1da177e4 LT |
498 | struct node_memblk_s *p, *q, *pend; |
499 | ||
3ad5ef8b | 500 | pxm = get_memory_proximity_domain(ma); |
1da177e4 LT |
501 | |
502 | /* fill node memory chunk structure */ | |
5f3b1a8b AS |
503 | paddr = ma->base_address; |
504 | size = ma->length; | |
1da177e4 LT |
505 | |
506 | /* Ignore disabled entries */ | |
5f3b1a8b | 507 | if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) |
095adbb6 | 508 | return -1; |
1da177e4 LT |
509 | |
510 | /* record this node in proximity bitmap */ | |
511 | pxm_bit_set(pxm); | |
512 | ||
513 | /* Insertion sort based on base address */ | |
514 | pend = &node_memblk[num_node_memblks]; | |
515 | for (p = &node_memblk[0]; p < pend; p++) { | |
516 | if (paddr < p->start_paddr) | |
517 | break; | |
518 | } | |
519 | if (p < pend) { | |
520 | for (q = pend - 1; q >= p; q--) | |
521 | *(q + 1) = *q; | |
522 | } | |
523 | p->start_paddr = paddr; | |
524 | p->size = size; | |
525 | p->nid = pxm; | |
526 | num_node_memblks++; | |
095adbb6 | 527 | return 0; |
1da177e4 LT |
528 | } |
529 | ||
4be44fcd | 530 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
531 | { |
532 | int i, j, node_from, node_to; | |
533 | ||
534 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
535 | if (srat_num_cpus == 0) { | |
536 | node_set_online(0); | |
537 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
538 | return; | |
539 | } | |
540 | ||
541 | /* | |
542 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
543 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
544 | */ | |
1da177e4 LT |
545 | nodes_clear(node_online_map); |
546 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
547 | if (pxm_bit_test(i)) { | |
762834e8 | 548 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
549 | node_set_online(nid); |
550 | } | |
551 | } | |
552 | ||
553 | /* set logical node id in memory chunk structure */ | |
554 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 555 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
556 | |
557 | /* assign memory bank numbers for each chunk on each node */ | |
558 | for_each_online_node(i) { | |
559 | int bank; | |
560 | ||
561 | bank = 0; | |
562 | for (j = 0; j < num_node_memblks; j++) | |
563 | if (node_memblk[j].nid == i) | |
564 | node_memblk[j].bank = bank++; | |
565 | } | |
566 | ||
567 | /* set logical node id in cpu structure */ | |
2c6e6db4 | 568 | for_each_possible_early_cpu(i) |
762834e8 | 569 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 570 | |
4be44fcd LB |
571 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
572 | num_online_nodes()); | |
573 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
574 | num_node_memblks); | |
1da177e4 | 575 | |
39b8931b FY |
576 | if (!slit_table) { |
577 | for (i = 0; i < MAX_NUMNODES; i++) | |
578 | for (j = 0; j < MAX_NUMNODES; j++) | |
579 | node_distance(i, j) = i == j ? LOCAL_DISTANCE : | |
580 | REMOTE_DISTANCE; | |
4be44fcd | 581 | return; |
39b8931b FY |
582 | } |
583 | ||
1da177e4 | 584 | memset(numa_slit, -1, sizeof(numa_slit)); |
5f3b1a8b | 585 | for (i = 0; i < slit_table->locality_count; i++) { |
1da177e4 LT |
586 | if (!pxm_bit_test(i)) |
587 | continue; | |
762834e8 | 588 | node_from = pxm_to_node(i); |
5f3b1a8b | 589 | for (j = 0; j < slit_table->locality_count; j++) { |
1da177e4 LT |
590 | if (!pxm_bit_test(j)) |
591 | continue; | |
762834e8 | 592 | node_to = pxm_to_node(j); |
1da177e4 | 593 | node_distance(node_from, node_to) = |
5f3b1a8b | 594 | slit_table->entry[i * slit_table->locality_count + j]; |
1da177e4 LT |
595 | } |
596 | } | |
597 | ||
598 | #ifdef SLIT_DEBUG | |
599 | printk("ACPI 2.0 SLIT locality table:\n"); | |
600 | for_each_online_node(i) { | |
601 | for_each_online_node(j) | |
4be44fcd | 602 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
603 | printk("\n"); |
604 | } | |
605 | #endif | |
606 | } | |
4be44fcd | 607 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 608 | |
1f3a6a15 KK |
609 | /* |
610 | * success: return IRQ number (>=0) | |
611 | * failure: return < 0 | |
612 | */ | |
a2f809b0 | 613 | int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) |
1da177e4 | 614 | { |
3948ec94 JK |
615 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
616 | return gsi; | |
617 | ||
1da177e4 LT |
618 | if (has_8259 && gsi < 16) |
619 | return isa_irq_to_vector(gsi); | |
620 | ||
621 | return iosapic_register_intr(gsi, | |
cb654695 | 622 | (polarity == |
4be44fcd LB |
623 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
624 | IOSAPIC_POL_LOW, | |
cb654695 | 625 | (triggering == |
4be44fcd LB |
626 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
627 | IOSAPIC_LEVEL); | |
1da177e4 | 628 | } |
a42b9bfe | 629 | EXPORT_SYMBOL_GPL(acpi_register_gsi); |
4be44fcd | 630 | |
4be44fcd | 631 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 | 632 | { |
72253943 JK |
633 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
634 | return; | |
635 | ||
3fb2c74e PB |
636 | if (has_8259 && gsi < 16) |
637 | return; | |
638 | ||
1da177e4 LT |
639 | iosapic_unregister_intr(gsi); |
640 | } | |
a42b9bfe | 641 | EXPORT_SYMBOL_GPL(acpi_unregister_gsi); |
4be44fcd | 642 | |
5f3b1a8b | 643 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 LT |
644 | { |
645 | struct acpi_table_header *fadt_header; | |
cee324b1 | 646 | struct acpi_table_fadt *fadt; |
1da177e4 | 647 | |
5f3b1a8b | 648 | if (!table) |
1da177e4 LT |
649 | return -EINVAL; |
650 | ||
5f3b1a8b | 651 | fadt_header = (struct acpi_table_header *)table; |
1da177e4 | 652 | if (fadt_header->revision != 3) |
4be44fcd | 653 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 654 | |
cee324b1 | 655 | fadt = (struct acpi_table_fadt *)fadt_header; |
1da177e4 | 656 | |
a2f809b0 YL |
657 | acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, |
658 | ACPI_ACTIVE_LOW); | |
1da177e4 LT |
659 | return 0; |
660 | } | |
661 | ||
62ee0540 DC |
662 | int __init early_acpi_boot_init(void) |
663 | { | |
664 | int ret; | |
665 | ||
666 | /* | |
667 | * do a partial walk of MADT to determine how many CPUs | |
668 | * we have including offline CPUs | |
669 | */ | |
670 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
671 | printk(KERN_ERR PREFIX "Can't find MADT\n"); | |
672 | return 0; | |
673 | } | |
674 | ||
675 | ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, | |
676 | acpi_parse_lsapic, NR_CPUS); | |
677 | if (ret < 1) | |
678 | printk(KERN_ERR PREFIX | |
679 | "Error parsing MADT - no LAPIC entries\n"); | |
247dba58 BH |
680 | else |
681 | acpi_lapic = 1; | |
62ee0540 | 682 | |
12cda817 TH |
683 | #ifdef CONFIG_SMP |
684 | if (available_cpus == 0) { | |
685 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
686 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
687 | smp_boot_data.cpu_phys_id[available_cpus] = | |
688 | hard_smp_processor_id(); | |
689 | available_cpus = 1; /* We've got at least one of these, no? */ | |
690 | } | |
691 | smp_boot_data.cpu_count = available_cpus; | |
692 | #endif | |
693 | /* Make boot-up look pretty */ | |
694 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, | |
695 | total_cpus); | |
696 | ||
62ee0540 DC |
697 | return 0; |
698 | } | |
699 | ||
4be44fcd | 700 | int __init acpi_boot_init(void) |
1da177e4 LT |
701 | { |
702 | ||
703 | /* | |
704 | * MADT | |
705 | * ---- | |
706 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
707 | * Note that this table provides platform SMP configuration | |
708 | * information -- the successor to MPS tables. | |
709 | */ | |
710 | ||
db2d4ccd | 711 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
712 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
713 | goto skip_madt; | |
714 | } | |
715 | ||
716 | /* Local APIC */ | |
717 | ||
4be44fcd | 718 | if (acpi_table_parse_madt |
5f3b1a8b | 719 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
4be44fcd LB |
720 | printk(KERN_ERR PREFIX |
721 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 722 | |
5f3b1a8b | 723 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
4be44fcd | 724 | < 0) |
1da177e4 LT |
725 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
726 | ||
727 | /* I/O APIC */ | |
728 | ||
4be44fcd | 729 | if (acpi_table_parse_madt |
7f6ff62a GB |
730 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { |
731 | if (!ia64_platform_is("sn2")) | |
732 | printk(KERN_ERR PREFIX | |
733 | "Error parsing MADT - no IOSAPIC entries\n"); | |
734 | } | |
1da177e4 LT |
735 | |
736 | /* System-Level Interrupt Routing */ | |
737 | ||
4be44fcd | 738 | if (acpi_table_parse_madt |
5f3b1a8b | 739 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
4be44fcd LB |
740 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
741 | printk(KERN_ERR PREFIX | |
742 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 743 | |
4be44fcd | 744 | if (acpi_table_parse_madt |
5f3b1a8b | 745 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
4be44fcd LB |
746 | printk(KERN_ERR PREFIX |
747 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 | 748 | |
5f3b1a8b | 749 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
1da177e4 | 750 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
4be44fcd | 751 | skip_madt: |
1da177e4 LT |
752 | |
753 | /* | |
754 | * FADT says whether a legacy keyboard controller is present. | |
755 | * The FADT also contains an SCI_INT line, by which the system | |
756 | * gets interrupts such as power and sleep buttons. If it's not | |
757 | * on a Legacy interrupt, it needs to be setup. | |
758 | */ | |
db2d4ccd | 759 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
1da177e4 LT |
760 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
761 | ||
12cda817 | 762 | #ifdef CONFIG_ACPI_NUMA |
1da177e4 | 763 | #ifdef CONFIG_SMP |
1da177e4 LT |
764 | if (srat_num_cpus == 0) { |
765 | int cpu, i = 1; | |
766 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
767 | if (smp_boot_data.cpu_phys_id[cpu] != |
768 | hard_smp_processor_id()) | |
769 | node_cpuid[i++].phys_id = | |
770 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 771 | } |
8d7e3517 | 772 | #endif |
8d7e3517 | 773 | build_cpu_to_node_map(); |
1da177e4 | 774 | #endif |
1da177e4 LT |
775 | return 0; |
776 | } | |
777 | ||
4be44fcd | 778 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 | 779 | { |
3c3738c8 | 780 | int tmp; |
1da177e4 LT |
781 | |
782 | if (has_8259 && gsi < 16) | |
783 | *irq = isa_irq_to_vector(gsi); | |
784 | else { | |
3c3738c8 KK |
785 | tmp = gsi_to_irq(gsi); |
786 | if (tmp == -1) | |
1da177e4 | 787 | return -1; |
3c3738c8 | 788 | *irq = tmp; |
1da177e4 LT |
789 | } |
790 | return 0; | |
791 | } | |
792 | ||
2c2df841 EB |
793 | int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) |
794 | { | |
795 | if (isa_irq >= 16) | |
796 | return -1; | |
797 | *gsi = isa_irq; | |
798 | return 0; | |
799 | } | |
800 | ||
1da177e4 LT |
801 | /* |
802 | * ACPI based hotplug CPU support | |
803 | */ | |
804 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
b1e9cee7 | 805 | static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
1da177e4 LT |
806 | { |
807 | #ifdef CONFIG_ACPI_NUMA | |
1da177e4 | 808 | /* |
08992986 KH |
809 | * We don't have cpu-only-node hotadd. But if the system equips |
810 | * SRAT table, pxm is already found and node is ready. | |
811 | * So, just pxm_to_nid(pxm) is OK. | |
812 | * This code here is for the system which doesn't have full SRAT | |
813 | * table for possible cpus. | |
1da177e4 | 814 | */ |
4be44fcd | 815 | node_cpuid[cpu].phys_id = physid; |
b1e9cee7 | 816 | node_cpuid[cpu].nid = acpi_get_node(handle); |
1da177e4 | 817 | #endif |
b1e9cee7 | 818 | return 0; |
1da177e4 LT |
819 | } |
820 | ||
a6b14fa6 AR |
821 | int additional_cpus __initdata = -1; |
822 | ||
823 | static __init int setup_additional_cpus(char *s) | |
824 | { | |
825 | if (s) | |
826 | additional_cpus = simple_strtol(s, NULL, 0); | |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | early_param("additional_cpus", setup_additional_cpus); | |
832 | ||
833 | /* | |
5f054e31 | 834 | * cpu_possible_mask should be static, it cannot change as CPUs |
a6b14fa6 AR |
835 | * are onlined, or offlined. The reason is per-cpu data-structures |
836 | * are allocated by some modules at init time, and dont expect to | |
837 | * do this dynamically on cpu arrival/departure. | |
7d7f9848 | 838 | * cpu_present_mask on the other hand can change dynamically. |
a6b14fa6 AR |
839 | * In case when cpu_hotplug is not compiled, then we resort to current |
840 | * behaviour, which is cpu_possible == cpu_present. | |
841 | * - Ashok Raj | |
842 | * | |
843 | * Three ways to find out the number of additional hotplug CPUs: | |
844 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
845 | * - The user can overwrite it with additional_cpus=NUM | |
846 | * - Otherwise don't reserve additional CPUs. | |
847 | */ | |
848 | __init void prefill_possible_map(void) | |
849 | { | |
850 | int i; | |
851 | int possible, disabled_cpus; | |
852 | ||
853 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 854 | |
a6b14fa6 | 855 | if (additional_cpus == -1) { |
8f8b1138 | 856 | if (disabled_cpus > 0) |
a6b14fa6 | 857 | additional_cpus = disabled_cpus; |
8f8b1138 | 858 | else |
a6b14fa6 | 859 | additional_cpus = 0; |
8f8b1138 AR |
860 | } |
861 | ||
862 | possible = available_cpus + additional_cpus; | |
863 | ||
2b633e3f YL |
864 | if (possible > nr_cpu_ids) |
865 | possible = nr_cpu_ids; | |
a6b14fa6 AR |
866 | |
867 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 868 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
869 | |
870 | for (i = 0; i < possible; i++) | |
2af51a3f | 871 | set_cpu_possible(i, true); |
a6b14fa6 AR |
872 | } |
873 | ||
d536bf3d | 874 | static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
1da177e4 | 875 | { |
1da177e4 | 876 | cpumask_t tmp_map; |
d536bf3d | 877 | int cpu; |
1da177e4 | 878 | |
5dd3c994 RR |
879 | cpumask_complement(&tmp_map, cpu_present_mask); |
880 | cpu = cpumask_first(&tmp_map); | |
881 | if (cpu >= nr_cpu_ids) | |
1da177e4 LT |
882 | return -EINVAL; |
883 | ||
884 | acpi_map_cpu2node(handle, cpu, physid); | |
885 | ||
7d7f9848 | 886 | set_cpu_present(cpu, true); |
1da177e4 | 887 | ia64_cpu_to_sapicid[cpu] = physid; |
1da177e4 | 888 | |
d8191fa4 AC |
889 | acpi_processor_set_pdc(handle); |
890 | ||
1da177e4 | 891 | *pcpu = cpu; |
4be44fcd | 892 | return (0); |
1da177e4 | 893 | } |
1da177e4 | 894 | |
af10f941 | 895 | /* wrapper to silence section mismatch warning */ |
d02dc27d | 896 | int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu) |
af10f941 | 897 | { |
d536bf3d | 898 | return _acpi_map_lsapic(handle, physid, pcpu); |
af10f941 | 899 | } |
d02dc27d | 900 | EXPORT_SYMBOL(acpi_map_cpu); |
1da177e4 | 901 | |
d02dc27d | 902 | int acpi_unmap_cpu(int cpu) |
1da177e4 | 903 | { |
1da177e4 | 904 | ia64_cpu_to_sapicid[cpu] = -1; |
7d7f9848 | 905 | set_cpu_present(cpu, false); |
1da177e4 LT |
906 | |
907 | #ifdef CONFIG_ACPI_NUMA | |
908 | /* NUMA specific cleanup's */ | |
909 | #endif | |
910 | ||
4be44fcd | 911 | return (0); |
1da177e4 | 912 | } |
d02dc27d | 913 | EXPORT_SYMBOL(acpi_unmap_cpu); |
4be44fcd | 914 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 LT |
915 | |
916 | #ifdef CONFIG_ACPI_NUMA | |
5b5e76e9 GKH |
917 | static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth, |
918 | void *context, void **ret) | |
1da177e4 | 919 | { |
4be44fcd | 920 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 921 | union acpi_object *obj; |
5f3b1a8b | 922 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 923 | unsigned int gsi_base; |
b1e9cee7 | 924 | int node; |
1da177e4 LT |
925 | |
926 | /* Only care about objects w/ a method that returns the MADT */ | |
927 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
928 | return AE_OK; | |
929 | ||
930 | if (!buffer.length || !buffer.pointer) | |
931 | return AE_OK; | |
932 | ||
933 | obj = buffer.pointer; | |
934 | if (obj->type != ACPI_TYPE_BUFFER || | |
935 | obj->buffer.length < sizeof(*iosapic)) { | |
02438d87 | 936 | kfree(buffer.pointer); |
1da177e4 LT |
937 | return AE_OK; |
938 | } | |
939 | ||
5f3b1a8b | 940 | iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; |
1da177e4 | 941 | |
5f3b1a8b | 942 | if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { |
02438d87 | 943 | kfree(buffer.pointer); |
1da177e4 LT |
944 | return AE_OK; |
945 | } | |
946 | ||
947 | gsi_base = iosapic->global_irq_base; | |
948 | ||
02438d87 | 949 | kfree(buffer.pointer); |
1da177e4 | 950 | |
b1e9cee7 BH |
951 | /* OK, it's an IOSAPIC MADT entry; associate it with a node */ |
952 | node = acpi_get_node(handle); | |
953 | if (node == NUMA_NO_NODE || !node_online(node) || | |
fbb776c3 | 954 | cpumask_empty(cpumask_of_node(node))) |
1da177e4 LT |
955 | return AE_OK; |
956 | ||
957 | /* We know a gsi to node mapping! */ | |
958 | map_iosapic_to_node(gsi_base, node); | |
959 | return AE_OK; | |
960 | } | |
650316f1 BH |
961 | |
962 | static int __init | |
963 | acpi_map_iosapics (void) | |
964 | { | |
965 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); | |
966 | return 0; | |
967 | } | |
968 | ||
969 | fs_initcall(acpi_map_iosapics); | |
970 | #endif /* CONFIG_ACPI_NUMA */ | |
b1bb248a | 971 | |
c5b5a599 | 972 | int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a | 973 | { |
0e888adc KK |
974 | int err; |
975 | ||
976 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
977 | return err; | |
978 | ||
24b8e0cc | 979 | #ifdef CONFIG_ACPI_NUMA |
0e888adc | 980 | acpi_map_iosapic(handle, 0, NULL, NULL); |
4be44fcd | 981 | #endif /* CONFIG_ACPI_NUMA */ |
0e888adc KK |
982 | |
983 | return 0; | |
b1bb248a | 984 | } |
4be44fcd | 985 | |
b1bb248a KK |
986 | EXPORT_SYMBOL(acpi_register_ioapic); |
987 | ||
4be44fcd | 988 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a | 989 | { |
0e888adc | 990 | return iosapic_remove(gsi_base); |
b1bb248a | 991 | } |
4be44fcd | 992 | |
b1bb248a KK |
993 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
994 | ||
e8b2fd01 | 995 | /* |
f1a2003e | 996 | * acpi_suspend_lowlevel() - save kernel state and suspend. |
e8b2fd01 LB |
997 | * |
998 | * TBD when when IA64 starts to support suspend... | |
999 | */ | |
f1a2003e | 1000 | int acpi_suspend_lowlevel(void) { return 0; } |