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> | |
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> | |
a0df655c | 55 | #include <asm/xen/hypervisor.h> |
1da177e4 LT |
56 | |
57 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
58 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 59 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
60 | |
61 | #define PREFIX "ACPI: " | |
62 | ||
63 | void (*pm_idle) (void); | |
64 | EXPORT_SYMBOL(pm_idle); | |
65 | void (*pm_power_off) (void); | |
66 | EXPORT_SYMBOL(pm_power_off); | |
67 | ||
55e59c51 AR |
68 | unsigned int acpi_cpei_override; |
69 | unsigned int acpi_cpei_phys_cpuid; | |
70 | ||
e8b2fd01 LB |
71 | unsigned long acpi_wakeup_address = 0; |
72 | ||
239665a3 LB |
73 | #ifdef CONFIG_IA64_GENERIC |
74 | static unsigned long __init acpi_find_rsdp(void) | |
75 | { | |
76 | unsigned long rsdp_phys = 0; | |
77 | ||
78 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) | |
79 | rsdp_phys = efi.acpi20; | |
80 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
81 | printk(KERN_WARNING PREFIX | |
82 | "v1.0/r0.71 tables no longer supported\n"); | |
83 | return rsdp_phys; | |
84 | } | |
85 | #endif | |
86 | ||
d57c4a38 TL |
87 | const char __init * |
88 | acpi_get_sysname(void) | |
1da177e4 LT |
89 | { |
90 | #ifdef CONFIG_IA64_GENERIC | |
91 | unsigned long rsdp_phys; | |
ad71860a | 92 | struct acpi_table_rsdp *rsdp; |
1da177e4 LT |
93 | struct acpi_table_xsdt *xsdt; |
94 | struct acpi_table_header *hdr; | |
62fdd767 FY |
95 | #ifdef CONFIG_DMAR |
96 | u64 i, nentries; | |
97 | #endif | |
1da177e4 LT |
98 | |
99 | rsdp_phys = acpi_find_rsdp(); | |
100 | if (!rsdp_phys) { | |
4be44fcd LB |
101 | printk(KERN_ERR |
102 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
1da177e4 LT |
103 | return "dig"; |
104 | } | |
105 | ||
ad71860a AS |
106 | rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); |
107 | if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { | |
4be44fcd LB |
108 | printk(KERN_ERR |
109 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
110 | return "dig"; |
111 | } | |
112 | ||
5f3b1a8b | 113 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); |
1da177e4 | 114 | hdr = &xsdt->header; |
ad71860a | 115 | if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { |
4be44fcd LB |
116 | printk(KERN_ERR |
117 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
118 | return "dig"; |
119 | } | |
120 | ||
121 | if (!strcmp(hdr->oem_id, "HP")) { | |
122 | return "hpzx1"; | |
4be44fcd | 123 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
22246614 JS |
124 | if (!strcmp(hdr->oem_table_id + 4, "UV")) |
125 | return "uv"; | |
126 | else | |
127 | return "sn2"; | |
a0df655c IY |
128 | } else if (xen_pv_domain() && !strcmp(hdr->oem_id, "XEN")) { |
129 | return "xen"; | |
1da177e4 LT |
130 | } |
131 | ||
62fdd767 FY |
132 | #ifdef CONFIG_DMAR |
133 | /* Look for Intel IOMMU */ | |
134 | nentries = (hdr->length - sizeof(*hdr)) / | |
135 | sizeof(xsdt->table_offset_entry[0]); | |
136 | for (i = 0; i < nentries; i++) { | |
137 | hdr = __va(xsdt->table_offset_entry[i]); | |
138 | if (strncmp(hdr->signature, ACPI_SIG_DMAR, | |
139 | sizeof(ACPI_SIG_DMAR) - 1) == 0) | |
140 | return "dig_vtd"; | |
141 | } | |
142 | #endif | |
143 | ||
1da177e4 LT |
144 | return "dig"; |
145 | #else | |
146 | # if defined (CONFIG_IA64_HP_SIM) | |
147 | return "hpsim"; | |
148 | # elif defined (CONFIG_IA64_HP_ZX1) | |
149 | return "hpzx1"; | |
150 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
151 | return "hpzx1_swiotlb"; | |
152 | # elif defined (CONFIG_IA64_SGI_SN2) | |
153 | return "sn2"; | |
22246614 JS |
154 | # elif defined (CONFIG_IA64_SGI_UV) |
155 | return "uv"; | |
1da177e4 LT |
156 | # elif defined (CONFIG_IA64_DIG) |
157 | return "dig"; | |
a0df655c IY |
158 | # elif defined (CONFIG_IA64_XEN_GUEST) |
159 | return "xen"; | |
62fdd767 FY |
160 | # elif defined(CONFIG_IA64_DIG_VTD) |
161 | return "dig_vtd"; | |
1da177e4 LT |
162 | # else |
163 | # error Unknown platform. Fix acpi.c. | |
164 | # endif | |
165 | #endif | |
166 | } | |
167 | ||
888ba6c6 | 168 | #ifdef CONFIG_ACPI |
1da177e4 LT |
169 | |
170 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
171 | ||
172 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
173 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
174 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
175 | }; | |
176 | ||
177 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
178 | ||
179 | /* | |
180 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
181 | * a generic platform event. Currently only CPEI is implemented. | |
182 | */ | |
4be44fcd | 183 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
184 | { |
185 | int vector = -1; | |
186 | ||
187 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
188 | /* corrected platform error interrupt */ | |
189 | vector = platform_intr_list[int_type]; | |
190 | } else | |
4be44fcd LB |
191 | printk(KERN_ERR |
192 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
193 | return vector; |
194 | } | |
195 | ||
2fdf0741 | 196 | char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
197 | { |
198 | return __va(phys_addr); | |
199 | } | |
200 | ||
201 | /* -------------------------------------------------------------------------- | |
202 | Boot-time Table Parsing | |
203 | -------------------------------------------------------------------------- */ | |
204 | ||
4be44fcd LB |
205 | static int available_cpus __initdata; |
206 | struct acpi_table_madt *acpi_madt __initdata; | |
207 | static u8 has_8259; | |
1da177e4 LT |
208 | |
209 | static int __init | |
5f3b1a8b | 210 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 211 | const unsigned long end) |
1da177e4 | 212 | { |
5f3b1a8b | 213 | struct acpi_madt_local_apic_override *lapic; |
1da177e4 | 214 | |
5f3b1a8b | 215 | lapic = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
216 | |
217 | if (BAD_MADT_ENTRY(lapic, end)) | |
218 | return -EINVAL; | |
219 | ||
220 | if (lapic->address) { | |
221 | iounmap(ipi_base_addr); | |
222 | ipi_base_addr = ioremap(lapic->address, 0); | |
223 | } | |
224 | return 0; | |
225 | } | |
226 | ||
1da177e4 | 227 | static int __init |
5f3b1a8b | 228 | acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 229 | { |
5f3b1a8b | 230 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 231 | |
5f3b1a8b | 232 | lsapic = (struct acpi_madt_local_sapic *)header; |
1da177e4 | 233 | |
5f3b1a8b | 234 | /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ |
1da177e4 | 235 | |
5f3b1a8b | 236 | if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { |
1da177e4 | 237 | #ifdef CONFIG_SMP |
4be44fcd LB |
238 | smp_boot_data.cpu_phys_id[available_cpus] = |
239 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 240 | #endif |
1da177e4 LT |
241 | ++available_cpus; |
242 | } | |
243 | ||
244 | total_cpus++; | |
245 | return 0; | |
246 | } | |
247 | ||
1da177e4 | 248 | static int __init |
5f3b1a8b | 249 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 250 | { |
5f3b1a8b | 251 | struct acpi_madt_local_apic_nmi *lacpi_nmi; |
1da177e4 | 252 | |
5f3b1a8b | 253 | lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
254 | |
255 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
256 | return -EINVAL; | |
257 | ||
258 | /* TBD: Support lapic_nmi entries */ | |
259 | return 0; | |
260 | } | |
261 | ||
1da177e4 | 262 | static int __init |
5f3b1a8b | 263 | acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 264 | { |
5f3b1a8b | 265 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 266 | |
5f3b1a8b | 267 | iosapic = (struct acpi_madt_io_sapic *)header; |
1da177e4 LT |
268 | |
269 | if (BAD_MADT_ENTRY(iosapic, end)) | |
270 | return -EINVAL; | |
271 | ||
0e888adc | 272 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
273 | } |
274 | ||
5810452d LB |
275 | static unsigned int __initdata acpi_madt_rev; |
276 | ||
1da177e4 | 277 | static int __init |
5f3b1a8b | 278 | acpi_parse_plat_int_src(struct acpi_subtable_header * header, |
4be44fcd | 279 | const unsigned long end) |
1da177e4 | 280 | { |
5f3b1a8b | 281 | struct acpi_madt_interrupt_source *plintsrc; |
1da177e4 LT |
282 | int vector; |
283 | ||
5f3b1a8b | 284 | plintsrc = (struct acpi_madt_interrupt_source *)header; |
1da177e4 LT |
285 | |
286 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
287 | return -EINVAL; | |
288 | ||
289 | /* | |
290 | * Get vector assignment for this interrupt, set attributes, | |
291 | * and program the IOSAPIC routing table. | |
292 | */ | |
293 | vector = iosapic_register_platform_intr(plintsrc->type, | |
294 | plintsrc->global_irq, | |
5f3b1a8b | 295 | plintsrc->io_sapic_vector, |
1da177e4 LT |
296 | plintsrc->eid, |
297 | plintsrc->id, | |
5f3b1a8b AS |
298 | ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == |
299 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
300 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
301 | ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
302 | ACPI_MADT_TRIGGER_EDGE) ? | |
303 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
304 | |
305 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 | 306 | if (acpi_madt_rev > 1) { |
5f3b1a8b | 307 | acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; |
55e59c51 AR |
308 | } |
309 | ||
310 | /* | |
311 | * Save the physical id, so we can check when its being removed | |
312 | */ | |
313 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
314 | ||
1da177e4 LT |
315 | return 0; |
316 | } | |
317 | ||
b88e9265 | 318 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
319 | unsigned int can_cpei_retarget(void) |
320 | { | |
321 | extern int cpe_vector; | |
ff741906 | 322 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
323 | |
324 | /* | |
325 | * Only if CPEI is supported and the override flag | |
326 | * is present, otherwise return that its re-targettable | |
327 | * if we are in polling mode. | |
328 | */ | |
ff741906 AR |
329 | if (cpe_vector > 0) { |
330 | if (acpi_cpei_override || force_cpei_retarget) | |
331 | return 1; | |
332 | else | |
333 | return 0; | |
334 | } | |
335 | return 1; | |
55e59c51 AR |
336 | } |
337 | ||
338 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
339 | { | |
340 | unsigned int logical_id; | |
341 | ||
342 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
343 | ||
344 | if (logical_id == cpu) | |
345 | return 1; | |
346 | else | |
347 | return 0; | |
348 | } | |
349 | ||
350 | void set_cpei_target_cpu(unsigned int cpu) | |
351 | { | |
352 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
353 | } | |
b88e9265 | 354 | #endif |
55e59c51 AR |
355 | |
356 | unsigned int get_cpei_target_cpu(void) | |
357 | { | |
358 | return acpi_cpei_phys_cpuid; | |
359 | } | |
360 | ||
1da177e4 | 361 | static int __init |
5f3b1a8b | 362 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 363 | const unsigned long end) |
1da177e4 | 364 | { |
5f3b1a8b | 365 | struct acpi_madt_interrupt_override *p; |
1da177e4 | 366 | |
5f3b1a8b | 367 | p = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
368 | |
369 | if (BAD_MADT_ENTRY(p, end)) | |
370 | return -EINVAL; | |
371 | ||
5f3b1a8b AS |
372 | iosapic_override_isa_irq(p->source_irq, p->global_irq, |
373 | ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == | |
374 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
375 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
376 | ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
377 | ACPI_MADT_TRIGGER_EDGE) ? | |
378 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
379 | return 0; |
380 | } | |
381 | ||
1da177e4 | 382 | static int __init |
5f3b1a8b | 383 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 384 | { |
5f3b1a8b | 385 | struct acpi_madt_nmi_source *nmi_src; |
1da177e4 | 386 | |
5f3b1a8b | 387 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
388 | |
389 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
390 | return -EINVAL; | |
391 | ||
392 | /* TBD: Support nimsrc entries */ | |
393 | return 0; | |
394 | } | |
395 | ||
4be44fcd | 396 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 397 | { |
4be44fcd | 398 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
399 | |
400 | /* | |
401 | * Unfortunately ITC_DRIFT is not yet part of the | |
402 | * official SAL spec, so the ITC_DRIFT bit is not | |
403 | * set by the BIOS on this hardware. | |
404 | */ | |
405 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
406 | ||
407 | cyclone_setup(); | |
408 | } | |
409 | } | |
410 | ||
5f3b1a8b | 411 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 412 | { |
5f3b1a8b | 413 | if (!table) |
1da177e4 LT |
414 | return -EINVAL; |
415 | ||
5f3b1a8b | 416 | acpi_madt = (struct acpi_table_madt *)table; |
1da177e4 | 417 | |
55e59c51 AR |
418 | acpi_madt_rev = acpi_madt->header.revision; |
419 | ||
1da177e4 LT |
420 | /* remember the value for reference after free_initmem() */ |
421 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 422 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 | 423 | #else |
5f3b1a8b | 424 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
1da177e4 LT |
425 | #endif |
426 | iosapic_system_init(has_8259); | |
427 | ||
428 | /* Get base address of IPI Message Block */ | |
429 | ||
5f3b1a8b AS |
430 | if (acpi_madt->address) |
431 | ipi_base_addr = ioremap(acpi_madt->address, 0); | |
1da177e4 LT |
432 | |
433 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
434 | ||
435 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 436 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
437 | |
438 | return 0; | |
439 | } | |
440 | ||
1da177e4 LT |
441 | #ifdef CONFIG_ACPI_NUMA |
442 | ||
443 | #undef SLIT_DEBUG | |
444 | ||
445 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
446 | ||
4be44fcd | 447 | static int __initdata srat_num_cpus; /* number of cpus */ |
1da177e4 LT |
448 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; |
449 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
450 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 | 451 | static struct acpi_table_slit __initdata *slit_table; |
2c6e6db4 | 452 | cpumask_t early_cpu_possible_map = CPU_MASK_NONE; |
1da177e4 | 453 | |
5f3b1a8b | 454 | static int get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) |
3ad5ef8b JS |
455 | { |
456 | int pxm; | |
457 | ||
5f3b1a8b | 458 | pxm = pa->proximity_domain_lo; |
3ad5ef8b | 459 | if (ia64_platform_is("sn2")) |
5f3b1a8b | 460 | pxm += pa->proximity_domain_hi[0] << 8; |
3ad5ef8b JS |
461 | return pxm; |
462 | } | |
463 | ||
5f3b1a8b | 464 | static int get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) |
3ad5ef8b JS |
465 | { |
466 | int pxm; | |
467 | ||
468 | pxm = ma->proximity_domain; | |
defad230 AS |
469 | if (!ia64_platform_is("sn2")) |
470 | pxm &= 0xff; | |
5f3b1a8b | 471 | |
3ad5ef8b JS |
472 | return pxm; |
473 | } | |
474 | ||
1da177e4 LT |
475 | /* |
476 | * ACPI 2.0 SLIT (System Locality Information Table) | |
477 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
478 | */ | |
4be44fcd | 479 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
480 | { |
481 | u32 len; | |
482 | ||
483 | len = sizeof(struct acpi_table_header) + 8 | |
5f3b1a8b | 484 | + slit->locality_count * slit->locality_count; |
1da177e4 | 485 | if (slit->header.length != len) { |
4be44fcd LB |
486 | printk(KERN_ERR |
487 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 | 488 | len, slit->header.length); |
1da177e4 LT |
489 | return; |
490 | } | |
491 | slit_table = slit; | |
492 | } | |
493 | ||
494 | void __init | |
5f3b1a8b | 495 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
1da177e4 | 496 | { |
3ad5ef8b JS |
497 | int pxm; |
498 | ||
5f3b1a8b | 499 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
d903cea3 KK |
500 | return; |
501 | ||
3ad5ef8b JS |
502 | pxm = get_processor_proximity_domain(pa); |
503 | ||
1da177e4 | 504 | /* record this node in proximity bitmap */ |
3ad5ef8b | 505 | pxm_bit_set(pxm); |
1da177e4 | 506 | |
4be44fcd | 507 | node_cpuid[srat_num_cpus].phys_id = |
5f3b1a8b | 508 | (pa->apic_id << 8) | (pa->local_sapic_eid); |
1da177e4 | 509 | /* nid should be overridden as logical node id later */ |
3ad5ef8b | 510 | node_cpuid[srat_num_cpus].nid = pxm; |
2c6e6db4 | 511 | cpu_set(srat_num_cpus, early_cpu_possible_map); |
1da177e4 LT |
512 | srat_num_cpus++; |
513 | } | |
514 | ||
515 | void __init | |
5f3b1a8b | 516 | acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) |
1da177e4 LT |
517 | { |
518 | unsigned long paddr, size; | |
3ad5ef8b | 519 | int pxm; |
1da177e4 LT |
520 | struct node_memblk_s *p, *q, *pend; |
521 | ||
3ad5ef8b | 522 | pxm = get_memory_proximity_domain(ma); |
1da177e4 LT |
523 | |
524 | /* fill node memory chunk structure */ | |
5f3b1a8b AS |
525 | paddr = ma->base_address; |
526 | size = ma->length; | |
1da177e4 LT |
527 | |
528 | /* Ignore disabled entries */ | |
5f3b1a8b | 529 | if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) |
1da177e4 LT |
530 | return; |
531 | ||
532 | /* record this node in proximity bitmap */ | |
533 | pxm_bit_set(pxm); | |
534 | ||
535 | /* Insertion sort based on base address */ | |
536 | pend = &node_memblk[num_node_memblks]; | |
537 | for (p = &node_memblk[0]; p < pend; p++) { | |
538 | if (paddr < p->start_paddr) | |
539 | break; | |
540 | } | |
541 | if (p < pend) { | |
542 | for (q = pend - 1; q >= p; q--) | |
543 | *(q + 1) = *q; | |
544 | } | |
545 | p->start_paddr = paddr; | |
546 | p->size = size; | |
547 | p->nid = pxm; | |
548 | num_node_memblks++; | |
549 | } | |
550 | ||
4be44fcd | 551 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
552 | { |
553 | int i, j, node_from, node_to; | |
554 | ||
555 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
556 | if (srat_num_cpus == 0) { | |
557 | node_set_online(0); | |
558 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
559 | return; | |
560 | } | |
561 | ||
562 | /* | |
563 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
564 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
565 | */ | |
1da177e4 LT |
566 | nodes_clear(node_online_map); |
567 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
568 | if (pxm_bit_test(i)) { | |
762834e8 | 569 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
570 | node_set_online(nid); |
571 | } | |
572 | } | |
573 | ||
574 | /* set logical node id in memory chunk structure */ | |
575 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 576 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
577 | |
578 | /* assign memory bank numbers for each chunk on each node */ | |
579 | for_each_online_node(i) { | |
580 | int bank; | |
581 | ||
582 | bank = 0; | |
583 | for (j = 0; j < num_node_memblks; j++) | |
584 | if (node_memblk[j].nid == i) | |
585 | node_memblk[j].bank = bank++; | |
586 | } | |
587 | ||
588 | /* set logical node id in cpu structure */ | |
2c6e6db4 | 589 | for_each_possible_early_cpu(i) |
762834e8 | 590 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 591 | |
4be44fcd LB |
592 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
593 | num_online_nodes()); | |
594 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
595 | num_node_memblks); | |
1da177e4 | 596 | |
39b8931b FY |
597 | if (!slit_table) { |
598 | for (i = 0; i < MAX_NUMNODES; i++) | |
599 | for (j = 0; j < MAX_NUMNODES; j++) | |
600 | node_distance(i, j) = i == j ? LOCAL_DISTANCE : | |
601 | REMOTE_DISTANCE; | |
4be44fcd | 602 | return; |
39b8931b FY |
603 | } |
604 | ||
1da177e4 | 605 | memset(numa_slit, -1, sizeof(numa_slit)); |
5f3b1a8b | 606 | for (i = 0; i < slit_table->locality_count; i++) { |
1da177e4 LT |
607 | if (!pxm_bit_test(i)) |
608 | continue; | |
762834e8 | 609 | node_from = pxm_to_node(i); |
5f3b1a8b | 610 | for (j = 0; j < slit_table->locality_count; j++) { |
1da177e4 LT |
611 | if (!pxm_bit_test(j)) |
612 | continue; | |
762834e8 | 613 | node_to = pxm_to_node(j); |
1da177e4 | 614 | node_distance(node_from, node_to) = |
5f3b1a8b | 615 | slit_table->entry[i * slit_table->locality_count + j]; |
1da177e4 LT |
616 | } |
617 | } | |
618 | ||
619 | #ifdef SLIT_DEBUG | |
620 | printk("ACPI 2.0 SLIT locality table:\n"); | |
621 | for_each_online_node(i) { | |
622 | for_each_online_node(j) | |
4be44fcd | 623 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
624 | printk("\n"); |
625 | } | |
626 | #endif | |
627 | } | |
4be44fcd | 628 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 629 | |
1f3a6a15 KK |
630 | /* |
631 | * success: return IRQ number (>=0) | |
632 | * failure: return < 0 | |
633 | */ | |
cb654695 | 634 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 | 635 | { |
3948ec94 JK |
636 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
637 | return gsi; | |
638 | ||
1da177e4 LT |
639 | if (has_8259 && gsi < 16) |
640 | return isa_irq_to_vector(gsi); | |
641 | ||
642 | return iosapic_register_intr(gsi, | |
cb654695 | 643 | (polarity == |
4be44fcd LB |
644 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
645 | IOSAPIC_POL_LOW, | |
cb654695 | 646 | (triggering == |
4be44fcd LB |
647 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
648 | IOSAPIC_LEVEL); | |
1da177e4 | 649 | } |
4be44fcd | 650 | |
4be44fcd | 651 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 | 652 | { |
72253943 JK |
653 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
654 | return; | |
655 | ||
3fb2c74e PB |
656 | if (has_8259 && gsi < 16) |
657 | return; | |
658 | ||
1da177e4 LT |
659 | iosapic_unregister_intr(gsi); |
660 | } | |
4be44fcd | 661 | |
5f3b1a8b | 662 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 LT |
663 | { |
664 | struct acpi_table_header *fadt_header; | |
cee324b1 | 665 | struct acpi_table_fadt *fadt; |
1da177e4 | 666 | |
5f3b1a8b | 667 | if (!table) |
1da177e4 LT |
668 | return -EINVAL; |
669 | ||
5f3b1a8b | 670 | fadt_header = (struct acpi_table_header *)table; |
1da177e4 | 671 | if (fadt_header->revision != 3) |
4be44fcd | 672 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 673 | |
cee324b1 | 674 | fadt = (struct acpi_table_fadt *)fadt_header; |
1da177e4 | 675 | |
cee324b1 | 676 | acpi_register_gsi(fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); |
1da177e4 LT |
677 | return 0; |
678 | } | |
679 | ||
62ee0540 DC |
680 | int __init early_acpi_boot_init(void) |
681 | { | |
682 | int ret; | |
683 | ||
684 | /* | |
685 | * do a partial walk of MADT to determine how many CPUs | |
686 | * we have including offline CPUs | |
687 | */ | |
688 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
689 | printk(KERN_ERR PREFIX "Can't find MADT\n"); | |
690 | return 0; | |
691 | } | |
692 | ||
693 | ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, | |
694 | acpi_parse_lsapic, NR_CPUS); | |
695 | if (ret < 1) | |
696 | printk(KERN_ERR PREFIX | |
697 | "Error parsing MADT - no LAPIC entries\n"); | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | ||
703 | ||
4be44fcd | 704 | int __init acpi_boot_init(void) |
1da177e4 LT |
705 | { |
706 | ||
707 | /* | |
708 | * MADT | |
709 | * ---- | |
710 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
711 | * Note that this table provides platform SMP configuration | |
712 | * information -- the successor to MPS tables. | |
713 | */ | |
714 | ||
db2d4ccd | 715 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
716 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
717 | goto skip_madt; | |
718 | } | |
719 | ||
720 | /* Local APIC */ | |
721 | ||
4be44fcd | 722 | if (acpi_table_parse_madt |
5f3b1a8b | 723 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
4be44fcd LB |
724 | printk(KERN_ERR PREFIX |
725 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 726 | |
5f3b1a8b | 727 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
4be44fcd | 728 | < 0) |
1da177e4 LT |
729 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
730 | ||
731 | /* I/O APIC */ | |
732 | ||
4be44fcd | 733 | if (acpi_table_parse_madt |
7f6ff62a GB |
734 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { |
735 | if (!ia64_platform_is("sn2")) | |
736 | printk(KERN_ERR PREFIX | |
737 | "Error parsing MADT - no IOSAPIC entries\n"); | |
738 | } | |
1da177e4 LT |
739 | |
740 | /* System-Level Interrupt Routing */ | |
741 | ||
4be44fcd | 742 | if (acpi_table_parse_madt |
5f3b1a8b | 743 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
4be44fcd LB |
744 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
745 | printk(KERN_ERR PREFIX | |
746 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 747 | |
4be44fcd | 748 | if (acpi_table_parse_madt |
5f3b1a8b | 749 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
4be44fcd LB |
750 | printk(KERN_ERR PREFIX |
751 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 | 752 | |
5f3b1a8b | 753 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
1da177e4 | 754 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
4be44fcd | 755 | skip_madt: |
1da177e4 LT |
756 | |
757 | /* | |
758 | * FADT says whether a legacy keyboard controller is present. | |
759 | * The FADT also contains an SCI_INT line, by which the system | |
760 | * gets interrupts such as power and sleep buttons. If it's not | |
761 | * on a Legacy interrupt, it needs to be setup. | |
762 | */ | |
db2d4ccd | 763 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
1da177e4 LT |
764 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
765 | ||
766 | #ifdef CONFIG_SMP | |
767 | if (available_cpus == 0) { | |
768 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
769 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
4be44fcd LB |
770 | smp_boot_data.cpu_phys_id[available_cpus] = |
771 | hard_smp_processor_id(); | |
772 | available_cpus = 1; /* We've got at least one of these, no? */ | |
1da177e4 LT |
773 | } |
774 | smp_boot_data.cpu_count = available_cpus; | |
775 | ||
776 | smp_build_cpu_map(); | |
777 | # ifdef CONFIG_ACPI_NUMA | |
778 | if (srat_num_cpus == 0) { | |
779 | int cpu, i = 1; | |
780 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
781 | if (smp_boot_data.cpu_phys_id[cpu] != |
782 | hard_smp_processor_id()) | |
783 | node_cpuid[i++].phys_id = | |
784 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 785 | } |
1da177e4 | 786 | # endif |
8d7e3517 TL |
787 | #endif |
788 | #ifdef CONFIG_ACPI_NUMA | |
789 | build_cpu_to_node_map(); | |
1da177e4 LT |
790 | #endif |
791 | /* Make boot-up look pretty */ | |
4be44fcd LB |
792 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, |
793 | total_cpus); | |
1da177e4 LT |
794 | return 0; |
795 | } | |
796 | ||
4be44fcd | 797 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 | 798 | { |
3c3738c8 | 799 | int tmp; |
1da177e4 LT |
800 | |
801 | if (has_8259 && gsi < 16) | |
802 | *irq = isa_irq_to_vector(gsi); | |
803 | else { | |
3c3738c8 KK |
804 | tmp = gsi_to_irq(gsi); |
805 | if (tmp == -1) | |
1da177e4 | 806 | return -1; |
3c3738c8 | 807 | *irq = tmp; |
1da177e4 LT |
808 | } |
809 | return 0; | |
810 | } | |
811 | ||
812 | /* | |
813 | * ACPI based hotplug CPU support | |
814 | */ | |
815 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
816 | static | |
efc7508c | 817 | int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
1da177e4 LT |
818 | { |
819 | #ifdef CONFIG_ACPI_NUMA | |
4be44fcd | 820 | int pxm_id; |
08992986 | 821 | int nid; |
1da177e4 LT |
822 | |
823 | pxm_id = acpi_get_pxm(handle); | |
1da177e4 | 824 | /* |
08992986 KH |
825 | * We don't have cpu-only-node hotadd. But if the system equips |
826 | * SRAT table, pxm is already found and node is ready. | |
827 | * So, just pxm_to_nid(pxm) is OK. | |
828 | * This code here is for the system which doesn't have full SRAT | |
829 | * table for possible cpus. | |
1da177e4 | 830 | */ |
08992986 | 831 | nid = acpi_map_pxm_to_node(pxm_id); |
4be44fcd | 832 | node_cpuid[cpu].phys_id = physid; |
08992986 | 833 | node_cpuid[cpu].nid = nid; |
1da177e4 | 834 | #endif |
4be44fcd | 835 | return (0); |
1da177e4 LT |
836 | } |
837 | ||
a6b14fa6 AR |
838 | int additional_cpus __initdata = -1; |
839 | ||
840 | static __init int setup_additional_cpus(char *s) | |
841 | { | |
842 | if (s) | |
843 | additional_cpus = simple_strtol(s, NULL, 0); | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | early_param("additional_cpus", setup_additional_cpus); | |
849 | ||
850 | /* | |
72fdbdce | 851 | * cpu_possible_map should be static, it cannot change as CPUs |
a6b14fa6 AR |
852 | * are onlined, or offlined. The reason is per-cpu data-structures |
853 | * are allocated by some modules at init time, and dont expect to | |
854 | * do this dynamically on cpu arrival/departure. | |
855 | * cpu_present_map on the other hand can change dynamically. | |
856 | * In case when cpu_hotplug is not compiled, then we resort to current | |
857 | * behaviour, which is cpu_possible == cpu_present. | |
858 | * - Ashok Raj | |
859 | * | |
860 | * Three ways to find out the number of additional hotplug CPUs: | |
861 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
862 | * - The user can overwrite it with additional_cpus=NUM | |
863 | * - Otherwise don't reserve additional CPUs. | |
864 | */ | |
865 | __init void prefill_possible_map(void) | |
866 | { | |
867 | int i; | |
868 | int possible, disabled_cpus; | |
869 | ||
870 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 871 | |
a6b14fa6 | 872 | if (additional_cpus == -1) { |
8f8b1138 | 873 | if (disabled_cpus > 0) |
a6b14fa6 | 874 | additional_cpus = disabled_cpus; |
8f8b1138 | 875 | else |
a6b14fa6 | 876 | additional_cpus = 0; |
8f8b1138 AR |
877 | } |
878 | ||
879 | possible = available_cpus + additional_cpus; | |
880 | ||
a6b14fa6 AR |
881 | if (possible > NR_CPUS) |
882 | possible = NR_CPUS; | |
883 | ||
884 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 885 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
886 | |
887 | for (i = 0; i < possible; i++) | |
888 | cpu_set(i, cpu_possible_map); | |
889 | } | |
890 | ||
4be44fcd | 891 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 892 | { |
4be44fcd | 893 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 894 | union acpi_object *obj; |
5f3b1a8b | 895 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 896 | cpumask_t tmp_map; |
efc7508c | 897 | int cpu, physid; |
4be44fcd | 898 | |
1da177e4 LT |
899 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
900 | return -EINVAL; | |
901 | ||
4be44fcd | 902 | if (!buffer.length || !buffer.pointer) |
1da177e4 | 903 | return -EINVAL; |
4be44fcd | 904 | |
1da177e4 | 905 | obj = buffer.pointer; |
5f3b1a8b AS |
906 | if (obj->type != ACPI_TYPE_BUFFER) |
907 | { | |
02438d87 | 908 | kfree(buffer.pointer); |
1da177e4 LT |
909 | return -EINVAL; |
910 | } | |
911 | ||
5f3b1a8b | 912 | lsapic = (struct acpi_madt_local_sapic *)obj->buffer.pointer; |
1da177e4 | 913 | |
5f3b1a8b | 914 | if ((lsapic->header.type != ACPI_MADT_TYPE_LOCAL_SAPIC) || |
965d7472 | 915 | (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))) { |
02438d87 | 916 | kfree(buffer.pointer); |
1da177e4 LT |
917 | return -EINVAL; |
918 | } | |
919 | ||
4be44fcd | 920 | physid = ((lsapic->id << 8) | (lsapic->eid)); |
1da177e4 | 921 | |
02438d87 | 922 | kfree(buffer.pointer); |
1da177e4 LT |
923 | buffer.length = ACPI_ALLOCATE_BUFFER; |
924 | buffer.pointer = NULL; | |
925 | ||
926 | cpus_complement(tmp_map, cpu_present_map); | |
927 | cpu = first_cpu(tmp_map); | |
4be44fcd | 928 | if (cpu >= NR_CPUS) |
1da177e4 LT |
929 | return -EINVAL; |
930 | ||
931 | acpi_map_cpu2node(handle, cpu, physid); | |
932 | ||
4be44fcd | 933 | cpu_set(cpu, cpu_present_map); |
1da177e4 | 934 | ia64_cpu_to_sapicid[cpu] = physid; |
1da177e4 LT |
935 | |
936 | *pcpu = cpu; | |
4be44fcd | 937 | return (0); |
1da177e4 | 938 | } |
1da177e4 | 939 | |
4be44fcd | 940 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 941 | |
4be44fcd | 942 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 943 | { |
1da177e4 | 944 | ia64_cpu_to_sapicid[cpu] = -1; |
4be44fcd | 945 | cpu_clear(cpu, cpu_present_map); |
1da177e4 LT |
946 | |
947 | #ifdef CONFIG_ACPI_NUMA | |
948 | /* NUMA specific cleanup's */ | |
949 | #endif | |
950 | ||
4be44fcd | 951 | return (0); |
1da177e4 | 952 | } |
4be44fcd | 953 | |
1da177e4 | 954 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 955 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 LT |
956 | |
957 | #ifdef CONFIG_ACPI_NUMA | |
650316f1 | 958 | static acpi_status __devinit |
4be44fcd | 959 | acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) |
1da177e4 | 960 | { |
4be44fcd | 961 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 962 | union acpi_object *obj; |
5f3b1a8b | 963 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 964 | unsigned int gsi_base; |
bb0fc085 | 965 | int pxm, node; |
1da177e4 LT |
966 | |
967 | /* Only care about objects w/ a method that returns the MADT */ | |
968 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
969 | return AE_OK; | |
970 | ||
971 | if (!buffer.length || !buffer.pointer) | |
972 | return AE_OK; | |
973 | ||
974 | obj = buffer.pointer; | |
975 | if (obj->type != ACPI_TYPE_BUFFER || | |
976 | obj->buffer.length < sizeof(*iosapic)) { | |
02438d87 | 977 | kfree(buffer.pointer); |
1da177e4 LT |
978 | return AE_OK; |
979 | } | |
980 | ||
5f3b1a8b | 981 | iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; |
1da177e4 | 982 | |
5f3b1a8b | 983 | if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { |
02438d87 | 984 | kfree(buffer.pointer); |
1da177e4 LT |
985 | return AE_OK; |
986 | } | |
987 | ||
988 | gsi_base = iosapic->global_irq_base; | |
989 | ||
02438d87 | 990 | kfree(buffer.pointer); |
1da177e4 LT |
991 | |
992 | /* | |
bb0fc085 | 993 | * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell |
1da177e4 LT |
994 | * us which node to associate this with. |
995 | */ | |
bb0fc085 AW |
996 | pxm = acpi_get_pxm(handle); |
997 | if (pxm < 0) | |
1da177e4 | 998 | return AE_OK; |
1da177e4 | 999 | |
762834e8 | 1000 | node = pxm_to_node(pxm); |
1da177e4 LT |
1001 | |
1002 | if (node >= MAX_NUMNODES || !node_online(node) || | |
fbb776c3 | 1003 | cpumask_empty(cpumask_of_node(node))) |
1da177e4 LT |
1004 | return AE_OK; |
1005 | ||
1006 | /* We know a gsi to node mapping! */ | |
1007 | map_iosapic_to_node(gsi_base, node); | |
1008 | return AE_OK; | |
1009 | } | |
650316f1 BH |
1010 | |
1011 | static int __init | |
1012 | acpi_map_iosapics (void) | |
1013 | { | |
1014 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | fs_initcall(acpi_map_iosapics); | |
1019 | #endif /* CONFIG_ACPI_NUMA */ | |
b1bb248a | 1020 | |
c5b5a599 | 1021 | int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a | 1022 | { |
0e888adc KK |
1023 | int err; |
1024 | ||
1025 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
1026 | return err; | |
1027 | ||
24b8e0cc | 1028 | #ifdef CONFIG_ACPI_NUMA |
0e888adc | 1029 | acpi_map_iosapic(handle, 0, NULL, NULL); |
4be44fcd | 1030 | #endif /* CONFIG_ACPI_NUMA */ |
0e888adc KK |
1031 | |
1032 | return 0; | |
b1bb248a | 1033 | } |
4be44fcd | 1034 | |
b1bb248a KK |
1035 | EXPORT_SYMBOL(acpi_register_ioapic); |
1036 | ||
4be44fcd | 1037 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a | 1038 | { |
0e888adc | 1039 | return iosapic_remove(gsi_base); |
b1bb248a | 1040 | } |
4be44fcd | 1041 | |
b1bb248a KK |
1042 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
1043 | ||
e8b2fd01 LB |
1044 | /* |
1045 | * acpi_save_state_mem() - save kernel state | |
1046 | * | |
1047 | * TBD when when IA64 starts to support suspend... | |
1048 | */ | |
1049 | int acpi_save_state_mem(void) { return 0; } | |
1050 | ||
1051 | /* | |
1052 | * acpi_restore_state() | |
1053 | */ | |
1054 | void acpi_restore_state_mem(void) {} | |
1055 | ||
1056 | /* | |
1057 | * do_suspend_lowlevel() | |
1058 | */ | |
1059 | void do_suspend_lowlevel(void) {} | |
1060 | ||
888ba6c6 | 1061 | #endif /* CONFIG_ACPI */ |