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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 <[email protected]> | |
6 | * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co. | |
7 | * David Mosberger-Tang <[email protected]> | |
8 | * Copyright (C) 2000 Intel Corp. | |
9 | * Copyright (C) 2000,2001 J.I. Lee <[email protected]> | |
10 | * Copyright (C) 2001 Paul Diefenbaugh <[email protected]> | |
11 | * Copyright (C) 2001 Jenna Hall <[email protected]> | |
12 | * Copyright (C) 2001 Takayoshi Kochi <[email protected]> | |
13 | * Copyright (C) 2002 Erich Focht <[email protected]> | |
55e59c51 | 14 | * Copyright (C) 2004 Ashok Raj <[email protected]> |
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 | ||
6c9a58e8 | 162 | void __init __iomem *__acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 163 | { |
6c9a58e8 | 164 | return __va(phys); |
1da177e4 LT |
165 | } |
166 | ||
6c9a58e8 | 167 | void __init __acpi_unmap_table(void __iomem *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 | acpi_madt = (struct acpi_table_madt *)table; |
1da177e4 | 384 | |
55e59c51 AR |
385 | acpi_madt_rev = acpi_madt->header.revision; |
386 | ||
1da177e4 LT |
387 | /* remember the value for reference after free_initmem() */ |
388 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 389 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 | 390 | #else |
5f3b1a8b | 391 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
1da177e4 LT |
392 | #endif |
393 | iosapic_system_init(has_8259); | |
394 | ||
395 | /* Get base address of IPI Message Block */ | |
396 | ||
5f3b1a8b AS |
397 | if (acpi_madt->address) |
398 | ipi_base_addr = ioremap(acpi_madt->address, 0); | |
1da177e4 LT |
399 | |
400 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
401 | ||
402 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 403 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
404 | |
405 | return 0; | |
406 | } | |
407 | ||
1da177e4 LT |
408 | #ifdef CONFIG_ACPI_NUMA |
409 | ||
410 | #undef SLIT_DEBUG | |
411 | ||
412 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
413 | ||
4be44fcd | 414 | static int __initdata srat_num_cpus; /* number of cpus */ |
5b5e76e9 | 415 | static u32 pxm_flag[PXM_FLAG_LEN]; |
1da177e4 LT |
416 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) |
417 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 | 418 | static struct acpi_table_slit __initdata *slit_table; |
2c6e6db4 | 419 | cpumask_t early_cpu_possible_map = CPU_MASK_NONE; |
1da177e4 | 420 | |
9f10f6a5 KG |
421 | static int __init |
422 | get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) | |
3ad5ef8b JS |
423 | { |
424 | int pxm; | |
425 | ||
5f3b1a8b | 426 | pxm = pa->proximity_domain_lo; |
9f10f6a5 | 427 | if (ia64_platform_is("sn2") || acpi_srat_revision >= 2) |
5f3b1a8b | 428 | pxm += pa->proximity_domain_hi[0] << 8; |
3ad5ef8b JS |
429 | return pxm; |
430 | } | |
431 | ||
9f10f6a5 KG |
432 | static int __init |
433 | get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) | |
3ad5ef8b JS |
434 | { |
435 | int pxm; | |
436 | ||
437 | pxm = ma->proximity_domain; | |
9f10f6a5 | 438 | if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1) |
defad230 | 439 | pxm &= 0xff; |
5f3b1a8b | 440 | |
3ad5ef8b JS |
441 | return pxm; |
442 | } | |
443 | ||
1da177e4 LT |
444 | /* |
445 | * ACPI 2.0 SLIT (System Locality Information Table) | |
446 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
447 | */ | |
4be44fcd | 448 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
449 | { |
450 | u32 len; | |
451 | ||
452 | len = sizeof(struct acpi_table_header) + 8 | |
5f3b1a8b | 453 | + slit->locality_count * slit->locality_count; |
1da177e4 | 454 | if (slit->header.length != len) { |
4be44fcd LB |
455 | printk(KERN_ERR |
456 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 | 457 | len, slit->header.length); |
1da177e4 LT |
458 | return; |
459 | } | |
460 | slit_table = slit; | |
461 | } | |
462 | ||
463 | void __init | |
5f3b1a8b | 464 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
1da177e4 | 465 | { |
3ad5ef8b JS |
466 | int pxm; |
467 | ||
5f3b1a8b | 468 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
d903cea3 KK |
469 | return; |
470 | ||
05f2f274 TL |
471 | if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) { |
472 | printk_once(KERN_WARNING | |
dff0092b | 473 | "node_cpuid[%ld] is too small, may not be able to use all cpus\n", |
05f2f274 TL |
474 | ARRAY_SIZE(node_cpuid)); |
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; |
5d2068da | 486 | cpumask_set_cpu(srat_num_cpus, &early_cpu_possible_map); |
1da177e4 LT |
487 | srat_num_cpus++; |
488 | } | |
489 | ||
095adbb6 | 490 | int __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)) |
095adbb6 | 505 | return -1; |
1da177e4 | 506 | |
fd3e4543 GK |
507 | if (num_node_memblks >= NR_NODE_MEMBLKS) { |
508 | pr_err("NUMA: too many memblk ranges\n"); | |
509 | return -EINVAL; | |
510 | } | |
511 | ||
1da177e4 LT |
512 | /* record this node in proximity bitmap */ |
513 | pxm_bit_set(pxm); | |
514 | ||
515 | /* Insertion sort based on base address */ | |
516 | pend = &node_memblk[num_node_memblks]; | |
517 | for (p = &node_memblk[0]; p < pend; p++) { | |
518 | if (paddr < p->start_paddr) | |
519 | break; | |
520 | } | |
521 | if (p < pend) { | |
522 | for (q = pend - 1; q >= p; q--) | |
523 | *(q + 1) = *q; | |
524 | } | |
525 | p->start_paddr = paddr; | |
526 | p->size = size; | |
527 | p->nid = pxm; | |
528 | num_node_memblks++; | |
095adbb6 | 529 | return 0; |
1da177e4 LT |
530 | } |
531 | ||
312521d0 | 532 | void __init acpi_numa_fixup(void) |
1da177e4 LT |
533 | { |
534 | int i, j, node_from, node_to; | |
535 | ||
536 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
537 | if (srat_num_cpus == 0) { | |
538 | node_set_online(0); | |
539 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
540 | return; | |
541 | } | |
542 | ||
543 | /* | |
544 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
545 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
546 | */ | |
1da177e4 LT |
547 | nodes_clear(node_online_map); |
548 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
549 | if (pxm_bit_test(i)) { | |
762834e8 | 550 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
551 | node_set_online(nid); |
552 | } | |
553 | } | |
554 | ||
555 | /* set logical node id in memory chunk structure */ | |
556 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 557 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
558 | |
559 | /* assign memory bank numbers for each chunk on each node */ | |
560 | for_each_online_node(i) { | |
561 | int bank; | |
562 | ||
563 | bank = 0; | |
564 | for (j = 0; j < num_node_memblks; j++) | |
565 | if (node_memblk[j].nid == i) | |
566 | node_memblk[j].bank = bank++; | |
567 | } | |
568 | ||
569 | /* set logical node id in cpu structure */ | |
2c6e6db4 | 570 | for_each_possible_early_cpu(i) |
762834e8 | 571 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 572 | |
4be44fcd LB |
573 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
574 | num_online_nodes()); | |
575 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
576 | num_node_memblks); | |
1da177e4 | 577 | |
39b8931b FY |
578 | if (!slit_table) { |
579 | for (i = 0; i < MAX_NUMNODES; i++) | |
580 | for (j = 0; j < MAX_NUMNODES; j++) | |
ef78e5ec MB |
581 | slit_distance(i, j) = i == j ? |
582 | LOCAL_DISTANCE : REMOTE_DISTANCE; | |
4be44fcd | 583 | return; |
39b8931b FY |
584 | } |
585 | ||
1da177e4 | 586 | memset(numa_slit, -1, sizeof(numa_slit)); |
5f3b1a8b | 587 | for (i = 0; i < slit_table->locality_count; i++) { |
1da177e4 LT |
588 | if (!pxm_bit_test(i)) |
589 | continue; | |
762834e8 | 590 | node_from = pxm_to_node(i); |
5f3b1a8b | 591 | for (j = 0; j < slit_table->locality_count; j++) { |
1da177e4 LT |
592 | if (!pxm_bit_test(j)) |
593 | continue; | |
762834e8 | 594 | node_to = pxm_to_node(j); |
ef78e5ec | 595 | slit_distance(node_from, node_to) = |
5f3b1a8b | 596 | slit_table->entry[i * slit_table->locality_count + j]; |
1da177e4 LT |
597 | } |
598 | } | |
599 | ||
600 | #ifdef SLIT_DEBUG | |
601 | printk("ACPI 2.0 SLIT locality table:\n"); | |
602 | for_each_online_node(i) { | |
603 | for_each_online_node(j) | |
4be44fcd | 604 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
605 | printk("\n"); |
606 | } | |
607 | #endif | |
608 | } | |
4be44fcd | 609 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 610 | |
1f3a6a15 KK |
611 | /* |
612 | * success: return IRQ number (>=0) | |
613 | * failure: return < 0 | |
614 | */ | |
a2f809b0 | 615 | int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) |
1da177e4 | 616 | { |
3948ec94 JK |
617 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
618 | return gsi; | |
619 | ||
1da177e4 LT |
620 | if (has_8259 && gsi < 16) |
621 | return isa_irq_to_vector(gsi); | |
622 | ||
623 | return iosapic_register_intr(gsi, | |
cb654695 | 624 | (polarity == |
4be44fcd LB |
625 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
626 | IOSAPIC_POL_LOW, | |
cb654695 | 627 | (triggering == |
4be44fcd LB |
628 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
629 | IOSAPIC_LEVEL); | |
1da177e4 | 630 | } |
a42b9bfe | 631 | EXPORT_SYMBOL_GPL(acpi_register_gsi); |
4be44fcd | 632 | |
4be44fcd | 633 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 | 634 | { |
72253943 JK |
635 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
636 | return; | |
637 | ||
3fb2c74e PB |
638 | if (has_8259 && gsi < 16) |
639 | return; | |
640 | ||
1da177e4 LT |
641 | iosapic_unregister_intr(gsi); |
642 | } | |
a42b9bfe | 643 | EXPORT_SYMBOL_GPL(acpi_unregister_gsi); |
4be44fcd | 644 | |
5f3b1a8b | 645 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 LT |
646 | { |
647 | struct acpi_table_header *fadt_header; | |
cee324b1 | 648 | struct acpi_table_fadt *fadt; |
1da177e4 | 649 | |
5f3b1a8b | 650 | fadt_header = (struct acpi_table_header *)table; |
1da177e4 | 651 | if (fadt_header->revision != 3) |
4be44fcd | 652 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 653 | |
cee324b1 | 654 | fadt = (struct acpi_table_fadt *)fadt_header; |
1da177e4 | 655 | |
a2f809b0 YL |
656 | acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, |
657 | ACPI_ACTIVE_LOW); | |
1da177e4 LT |
658 | return 0; |
659 | } | |
660 | ||
62ee0540 DC |
661 | int __init early_acpi_boot_init(void) |
662 | { | |
663 | int ret; | |
664 | ||
665 | /* | |
666 | * do a partial walk of MADT to determine how many CPUs | |
667 | * we have including offline CPUs | |
668 | */ | |
669 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
670 | printk(KERN_ERR PREFIX "Can't find MADT\n"); | |
671 | return 0; | |
672 | } | |
673 | ||
674 | ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, | |
675 | acpi_parse_lsapic, NR_CPUS); | |
676 | if (ret < 1) | |
677 | printk(KERN_ERR PREFIX | |
678 | "Error parsing MADT - no LAPIC entries\n"); | |
247dba58 BH |
679 | else |
680 | acpi_lapic = 1; | |
62ee0540 | 681 | |
12cda817 TH |
682 | #ifdef CONFIG_SMP |
683 | if (available_cpus == 0) { | |
684 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
685 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
686 | smp_boot_data.cpu_phys_id[available_cpus] = | |
687 | hard_smp_processor_id(); | |
688 | available_cpus = 1; /* We've got at least one of these, no? */ | |
689 | } | |
690 | smp_boot_data.cpu_count = available_cpus; | |
691 | #endif | |
692 | /* Make boot-up look pretty */ | |
693 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, | |
694 | total_cpus); | |
695 | ||
62ee0540 DC |
696 | return 0; |
697 | } | |
698 | ||
4be44fcd | 699 | int __init acpi_boot_init(void) |
1da177e4 LT |
700 | { |
701 | ||
702 | /* | |
703 | * MADT | |
704 | * ---- | |
705 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
706 | * Note that this table provides platform SMP configuration | |
707 | * information -- the successor to MPS tables. | |
708 | */ | |
709 | ||
db2d4ccd | 710 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
711 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
712 | goto skip_madt; | |
713 | } | |
714 | ||
715 | /* Local APIC */ | |
716 | ||
4be44fcd | 717 | if (acpi_table_parse_madt |
5f3b1a8b | 718 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
4be44fcd LB |
719 | printk(KERN_ERR PREFIX |
720 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 721 | |
5f3b1a8b | 722 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
4be44fcd | 723 | < 0) |
1da177e4 LT |
724 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
725 | ||
726 | /* I/O APIC */ | |
727 | ||
4be44fcd | 728 | if (acpi_table_parse_madt |
7f6ff62a GB |
729 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { |
730 | if (!ia64_platform_is("sn2")) | |
731 | printk(KERN_ERR PREFIX | |
732 | "Error parsing MADT - no IOSAPIC entries\n"); | |
733 | } | |
1da177e4 LT |
734 | |
735 | /* System-Level Interrupt Routing */ | |
736 | ||
4be44fcd | 737 | if (acpi_table_parse_madt |
5f3b1a8b | 738 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
4be44fcd LB |
739 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
740 | printk(KERN_ERR PREFIX | |
741 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 742 | |
4be44fcd | 743 | if (acpi_table_parse_madt |
5f3b1a8b | 744 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
4be44fcd LB |
745 | printk(KERN_ERR PREFIX |
746 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 | 747 | |
5f3b1a8b | 748 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
1da177e4 | 749 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
4be44fcd | 750 | skip_madt: |
1da177e4 LT |
751 | |
752 | /* | |
753 | * FADT says whether a legacy keyboard controller is present. | |
754 | * The FADT also contains an SCI_INT line, by which the system | |
755 | * gets interrupts such as power and sleep buttons. If it's not | |
756 | * on a Legacy interrupt, it needs to be setup. | |
757 | */ | |
db2d4ccd | 758 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
1da177e4 LT |
759 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
760 | ||
12cda817 | 761 | #ifdef CONFIG_ACPI_NUMA |
1da177e4 | 762 | #ifdef CONFIG_SMP |
1da177e4 LT |
763 | if (srat_num_cpus == 0) { |
764 | int cpu, i = 1; | |
765 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
766 | if (smp_boot_data.cpu_phys_id[cpu] != |
767 | hard_smp_processor_id()) | |
768 | node_cpuid[i++].phys_id = | |
769 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 770 | } |
8d7e3517 | 771 | #endif |
8d7e3517 | 772 | build_cpu_to_node_map(); |
1da177e4 | 773 | #endif |
1da177e4 LT |
774 | return 0; |
775 | } | |
776 | ||
4be44fcd | 777 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 | 778 | { |
3c3738c8 | 779 | int tmp; |
1da177e4 LT |
780 | |
781 | if (has_8259 && gsi < 16) | |
782 | *irq = isa_irq_to_vector(gsi); | |
783 | else { | |
3c3738c8 KK |
784 | tmp = gsi_to_irq(gsi); |
785 | if (tmp == -1) | |
1da177e4 | 786 | return -1; |
3c3738c8 | 787 | *irq = tmp; |
1da177e4 LT |
788 | } |
789 | return 0; | |
790 | } | |
791 | ||
2c2df841 EB |
792 | int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) |
793 | { | |
794 | if (isa_irq >= 16) | |
795 | return -1; | |
796 | *gsi = isa_irq; | |
797 | return 0; | |
798 | } | |
799 | ||
1da177e4 LT |
800 | /* |
801 | * ACPI based hotplug CPU support | |
802 | */ | |
803 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
dc6db24d | 804 | int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
1da177e4 LT |
805 | { |
806 | #ifdef CONFIG_ACPI_NUMA | |
1da177e4 | 807 | /* |
08992986 KH |
808 | * We don't have cpu-only-node hotadd. But if the system equips |
809 | * SRAT table, pxm is already found and node is ready. | |
810 | * So, just pxm_to_nid(pxm) is OK. | |
811 | * This code here is for the system which doesn't have full SRAT | |
812 | * table for possible cpus. | |
1da177e4 | 813 | */ |
4be44fcd | 814 | node_cpuid[cpu].phys_id = physid; |
b1e9cee7 | 815 | node_cpuid[cpu].nid = acpi_get_node(handle); |
1da177e4 | 816 | #endif |
b1e9cee7 | 817 | return 0; |
1da177e4 LT |
818 | } |
819 | ||
a6b14fa6 AR |
820 | int additional_cpus __initdata = -1; |
821 | ||
822 | static __init int setup_additional_cpus(char *s) | |
823 | { | |
824 | if (s) | |
825 | additional_cpus = simple_strtol(s, NULL, 0); | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | early_param("additional_cpus", setup_additional_cpus); | |
831 | ||
832 | /* | |
5f054e31 | 833 | * cpu_possible_mask should be static, it cannot change as CPUs |
a6b14fa6 AR |
834 | * are onlined, or offlined. The reason is per-cpu data-structures |
835 | * are allocated by some modules at init time, and dont expect to | |
836 | * do this dynamically on cpu arrival/departure. | |
7d7f9848 | 837 | * cpu_present_mask on the other hand can change dynamically. |
a6b14fa6 AR |
838 | * In case when cpu_hotplug is not compiled, then we resort to current |
839 | * behaviour, which is cpu_possible == cpu_present. | |
840 | * - Ashok Raj | |
841 | * | |
842 | * Three ways to find out the number of additional hotplug CPUs: | |
843 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
844 | * - The user can overwrite it with additional_cpus=NUM | |
845 | * - Otherwise don't reserve additional CPUs. | |
846 | */ | |
847 | __init void prefill_possible_map(void) | |
848 | { | |
849 | int i; | |
850 | int possible, disabled_cpus; | |
851 | ||
852 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 853 | |
a6b14fa6 | 854 | if (additional_cpus == -1) { |
8f8b1138 | 855 | if (disabled_cpus > 0) |
a6b14fa6 | 856 | additional_cpus = disabled_cpus; |
8f8b1138 | 857 | else |
a6b14fa6 | 858 | additional_cpus = 0; |
8f8b1138 AR |
859 | } |
860 | ||
861 | possible = available_cpus + additional_cpus; | |
862 | ||
2b633e3f YL |
863 | if (possible > nr_cpu_ids) |
864 | possible = nr_cpu_ids; | |
a6b14fa6 AR |
865 | |
866 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 867 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
868 | |
869 | for (i = 0; i < possible; i++) | |
2af51a3f | 870 | set_cpu_possible(i, true); |
a6b14fa6 AR |
871 | } |
872 | ||
d536bf3d | 873 | static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
1da177e4 | 874 | { |
1da177e4 | 875 | cpumask_t tmp_map; |
d536bf3d | 876 | int cpu; |
1da177e4 | 877 | |
5dd3c994 RR |
878 | cpumask_complement(&tmp_map, cpu_present_mask); |
879 | cpu = cpumask_first(&tmp_map); | |
880 | if (cpu >= nr_cpu_ids) | |
1da177e4 LT |
881 | return -EINVAL; |
882 | ||
883 | acpi_map_cpu2node(handle, cpu, physid); | |
884 | ||
7d7f9848 | 885 | set_cpu_present(cpu, true); |
1da177e4 | 886 | ia64_cpu_to_sapicid[cpu] = physid; |
1da177e4 | 887 | |
d8191fa4 AC |
888 | acpi_processor_set_pdc(handle); |
889 | ||
1da177e4 | 890 | *pcpu = cpu; |
4be44fcd | 891 | return (0); |
1da177e4 | 892 | } |
1da177e4 | 893 | |
af10f941 | 894 | /* wrapper to silence section mismatch warning */ |
febf2407 VK |
895 | int __ref acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id, |
896 | 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; } |