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1da177e4 LT |
1 | /* |
2 | * acpi.c - Architecture-Specific Low-Level ACPI Support | |
3 | * | |
4 | * Copyright (C) 1999 VA Linux Systems | |
5 | * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com> | |
6 | * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co. | |
7 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
8 | * Copyright (C) 2000 Intel Corp. | |
9 | * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com> | |
10 | * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
11 | * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com> | |
12 | * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com> | |
13 | * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de> | |
55e59c51 | 14 | * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com> |
1da177e4 LT |
15 | * |
16 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2 of the License, or | |
21 | * (at your option) any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
31 | * | |
32 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
33 | */ | |
34 | ||
1da177e4 LT |
35 | #include <linux/module.h> |
36 | #include <linux/init.h> | |
37 | #include <linux/kernel.h> | |
38 | #include <linux/sched.h> | |
39 | #include <linux/smp.h> | |
40 | #include <linux/string.h> | |
41 | #include <linux/types.h> | |
42 | #include <linux/irq.h> | |
43 | #include <linux/acpi.h> | |
44 | #include <linux/efi.h> | |
45 | #include <linux/mmzone.h> | |
46 | #include <linux/nodemask.h> | |
47 | #include <asm/io.h> | |
48 | #include <asm/iosapic.h> | |
49 | #include <asm/machvec.h> | |
50 | #include <asm/page.h> | |
51 | #include <asm/system.h> | |
52 | #include <asm/numa.h> | |
53 | #include <asm/sal.h> | |
54 | #include <asm/cyclone.h> | |
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 | ||
237889bf | 68 | u32 acpi_rsdt_forced; |
55e59c51 AR |
69 | unsigned int acpi_cpei_override; |
70 | unsigned int acpi_cpei_phys_cpuid; | |
71 | ||
e8b2fd01 LB |
72 | unsigned long acpi_wakeup_address = 0; |
73 | ||
239665a3 LB |
74 | #ifdef CONFIG_IA64_GENERIC |
75 | static unsigned long __init acpi_find_rsdp(void) | |
76 | { | |
77 | unsigned long rsdp_phys = 0; | |
78 | ||
79 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) | |
80 | rsdp_phys = efi.acpi20; | |
81 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
82 | printk(KERN_WARNING PREFIX | |
83 | "v1.0/r0.71 tables no longer supported\n"); | |
84 | return rsdp_phys; | |
85 | } | |
86 | #endif | |
87 | ||
d57c4a38 TL |
88 | const char __init * |
89 | acpi_get_sysname(void) | |
1da177e4 LT |
90 | { |
91 | #ifdef CONFIG_IA64_GENERIC | |
92 | unsigned long rsdp_phys; | |
ad71860a | 93 | struct acpi_table_rsdp *rsdp; |
1da177e4 LT |
94 | struct acpi_table_xsdt *xsdt; |
95 | struct acpi_table_header *hdr; | |
62fdd767 FY |
96 | #ifdef CONFIG_DMAR |
97 | u64 i, nentries; | |
98 | #endif | |
1da177e4 LT |
99 | |
100 | rsdp_phys = acpi_find_rsdp(); | |
101 | if (!rsdp_phys) { | |
4be44fcd LB |
102 | printk(KERN_ERR |
103 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); | |
1da177e4 LT |
104 | return "dig"; |
105 | } | |
106 | ||
ad71860a AS |
107 | rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); |
108 | if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { | |
4be44fcd LB |
109 | printk(KERN_ERR |
110 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
111 | return "dig"; |
112 | } | |
113 | ||
5f3b1a8b | 114 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); |
1da177e4 | 115 | hdr = &xsdt->header; |
ad71860a | 116 | if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { |
4be44fcd LB |
117 | printk(KERN_ERR |
118 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); | |
1da177e4 LT |
119 | return "dig"; |
120 | } | |
121 | ||
122 | if (!strcmp(hdr->oem_id, "HP")) { | |
123 | return "hpzx1"; | |
4be44fcd | 124 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
22246614 JS |
125 | if (!strcmp(hdr->oem_table_id + 4, "UV")) |
126 | return "uv"; | |
127 | else | |
128 | return "sn2"; | |
a0df655c IY |
129 | } else if (xen_pv_domain() && !strcmp(hdr->oem_id, "XEN")) { |
130 | return "xen"; | |
1da177e4 LT |
131 | } |
132 | ||
62fdd767 FY |
133 | #ifdef CONFIG_DMAR |
134 | /* Look for Intel IOMMU */ | |
135 | nentries = (hdr->length - sizeof(*hdr)) / | |
136 | sizeof(xsdt->table_offset_entry[0]); | |
137 | for (i = 0; i < nentries; i++) { | |
138 | hdr = __va(xsdt->table_offset_entry[i]); | |
139 | if (strncmp(hdr->signature, ACPI_SIG_DMAR, | |
140 | sizeof(ACPI_SIG_DMAR) - 1) == 0) | |
141 | return "dig_vtd"; | |
142 | } | |
143 | #endif | |
144 | ||
1da177e4 LT |
145 | return "dig"; |
146 | #else | |
147 | # if defined (CONFIG_IA64_HP_SIM) | |
148 | return "hpsim"; | |
149 | # elif defined (CONFIG_IA64_HP_ZX1) | |
150 | return "hpzx1"; | |
151 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
152 | return "hpzx1_swiotlb"; | |
153 | # elif defined (CONFIG_IA64_SGI_SN2) | |
154 | return "sn2"; | |
22246614 JS |
155 | # elif defined (CONFIG_IA64_SGI_UV) |
156 | return "uv"; | |
1da177e4 LT |
157 | # elif defined (CONFIG_IA64_DIG) |
158 | return "dig"; | |
a0df655c IY |
159 | # elif defined (CONFIG_IA64_XEN_GUEST) |
160 | return "xen"; | |
62fdd767 FY |
161 | # elif defined(CONFIG_IA64_DIG_VTD) |
162 | return "dig_vtd"; | |
1da177e4 LT |
163 | # else |
164 | # error Unknown platform. Fix acpi.c. | |
165 | # endif | |
166 | #endif | |
167 | } | |
168 | ||
888ba6c6 | 169 | #ifdef CONFIG_ACPI |
1da177e4 LT |
170 | |
171 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
172 | ||
173 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
174 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
175 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
176 | }; | |
177 | ||
178 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
179 | ||
180 | /* | |
181 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
182 | * a generic platform event. Currently only CPEI is implemented. | |
183 | */ | |
4be44fcd | 184 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
185 | { |
186 | int vector = -1; | |
187 | ||
188 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
189 | /* corrected platform error interrupt */ | |
190 | vector = platform_intr_list[int_type]; | |
191 | } else | |
4be44fcd LB |
192 | printk(KERN_ERR |
193 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
194 | return vector; |
195 | } | |
196 | ||
2fdf0741 | 197 | char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
198 | { |
199 | return __va(phys_addr); | |
200 | } | |
201 | ||
970ec1a8 | 202 | void __init __acpi_unmap_table(char *map, unsigned long size) |
7d97277b YL |
203 | { |
204 | } | |
205 | ||
1da177e4 LT |
206 | /* -------------------------------------------------------------------------- |
207 | Boot-time Table Parsing | |
208 | -------------------------------------------------------------------------- */ | |
209 | ||
4be44fcd LB |
210 | static int available_cpus __initdata; |
211 | struct acpi_table_madt *acpi_madt __initdata; | |
212 | static u8 has_8259; | |
1da177e4 LT |
213 | |
214 | static int __init | |
5f3b1a8b | 215 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 216 | const unsigned long end) |
1da177e4 | 217 | { |
5f3b1a8b | 218 | struct acpi_madt_local_apic_override *lapic; |
1da177e4 | 219 | |
5f3b1a8b | 220 | lapic = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
221 | |
222 | if (BAD_MADT_ENTRY(lapic, end)) | |
223 | return -EINVAL; | |
224 | ||
225 | if (lapic->address) { | |
226 | iounmap(ipi_base_addr); | |
227 | ipi_base_addr = ioremap(lapic->address, 0); | |
228 | } | |
229 | return 0; | |
230 | } | |
231 | ||
1da177e4 | 232 | static int __init |
5f3b1a8b | 233 | acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 234 | { |
5f3b1a8b | 235 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 236 | |
5f3b1a8b | 237 | lsapic = (struct acpi_madt_local_sapic *)header; |
1da177e4 | 238 | |
5f3b1a8b | 239 | /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ |
1da177e4 | 240 | |
5f3b1a8b | 241 | if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { |
1da177e4 | 242 | #ifdef CONFIG_SMP |
4be44fcd LB |
243 | smp_boot_data.cpu_phys_id[available_cpus] = |
244 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 245 | #endif |
1da177e4 LT |
246 | ++available_cpus; |
247 | } | |
248 | ||
249 | total_cpus++; | |
250 | return 0; | |
251 | } | |
252 | ||
1da177e4 | 253 | static int __init |
5f3b1a8b | 254 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 255 | { |
5f3b1a8b | 256 | struct acpi_madt_local_apic_nmi *lacpi_nmi; |
1da177e4 | 257 | |
5f3b1a8b | 258 | lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
259 | |
260 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
261 | return -EINVAL; | |
262 | ||
263 | /* TBD: Support lapic_nmi entries */ | |
264 | return 0; | |
265 | } | |
266 | ||
1da177e4 | 267 | static int __init |
5f3b1a8b | 268 | acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 269 | { |
5f3b1a8b | 270 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 271 | |
5f3b1a8b | 272 | iosapic = (struct acpi_madt_io_sapic *)header; |
1da177e4 LT |
273 | |
274 | if (BAD_MADT_ENTRY(iosapic, end)) | |
275 | return -EINVAL; | |
276 | ||
0e888adc | 277 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
278 | } |
279 | ||
5810452d LB |
280 | static unsigned int __initdata acpi_madt_rev; |
281 | ||
1da177e4 | 282 | static int __init |
5f3b1a8b | 283 | acpi_parse_plat_int_src(struct acpi_subtable_header * header, |
4be44fcd | 284 | const unsigned long end) |
1da177e4 | 285 | { |
5f3b1a8b | 286 | struct acpi_madt_interrupt_source *plintsrc; |
1da177e4 LT |
287 | int vector; |
288 | ||
5f3b1a8b | 289 | plintsrc = (struct acpi_madt_interrupt_source *)header; |
1da177e4 LT |
290 | |
291 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
292 | return -EINVAL; | |
293 | ||
294 | /* | |
295 | * Get vector assignment for this interrupt, set attributes, | |
296 | * and program the IOSAPIC routing table. | |
297 | */ | |
298 | vector = iosapic_register_platform_intr(plintsrc->type, | |
299 | plintsrc->global_irq, | |
5f3b1a8b | 300 | plintsrc->io_sapic_vector, |
1da177e4 LT |
301 | plintsrc->eid, |
302 | plintsrc->id, | |
5f3b1a8b AS |
303 | ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == |
304 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
305 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
306 | ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
307 | ACPI_MADT_TRIGGER_EDGE) ? | |
308 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
309 | |
310 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 | 311 | if (acpi_madt_rev > 1) { |
5f3b1a8b | 312 | acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; |
55e59c51 AR |
313 | } |
314 | ||
315 | /* | |
316 | * Save the physical id, so we can check when its being removed | |
317 | */ | |
318 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
319 | ||
1da177e4 LT |
320 | return 0; |
321 | } | |
322 | ||
b88e9265 | 323 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
324 | unsigned int can_cpei_retarget(void) |
325 | { | |
326 | extern int cpe_vector; | |
ff741906 | 327 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
328 | |
329 | /* | |
330 | * Only if CPEI is supported and the override flag | |
331 | * is present, otherwise return that its re-targettable | |
332 | * if we are in polling mode. | |
333 | */ | |
ff741906 AR |
334 | if (cpe_vector > 0) { |
335 | if (acpi_cpei_override || force_cpei_retarget) | |
336 | return 1; | |
337 | else | |
338 | return 0; | |
339 | } | |
340 | return 1; | |
55e59c51 AR |
341 | } |
342 | ||
343 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
344 | { | |
345 | unsigned int logical_id; | |
346 | ||
347 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
348 | ||
349 | if (logical_id == cpu) | |
350 | return 1; | |
351 | else | |
352 | return 0; | |
353 | } | |
354 | ||
355 | void set_cpei_target_cpu(unsigned int cpu) | |
356 | { | |
357 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
358 | } | |
b88e9265 | 359 | #endif |
55e59c51 AR |
360 | |
361 | unsigned int get_cpei_target_cpu(void) | |
362 | { | |
363 | return acpi_cpei_phys_cpuid; | |
364 | } | |
365 | ||
1da177e4 | 366 | static int __init |
5f3b1a8b | 367 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 368 | const unsigned long end) |
1da177e4 | 369 | { |
5f3b1a8b | 370 | struct acpi_madt_interrupt_override *p; |
1da177e4 | 371 | |
5f3b1a8b | 372 | p = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
373 | |
374 | if (BAD_MADT_ENTRY(p, end)) | |
375 | return -EINVAL; | |
376 | ||
5f3b1a8b AS |
377 | iosapic_override_isa_irq(p->source_irq, p->global_irq, |
378 | ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == | |
379 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? | |
380 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
381 | ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == | |
382 | ACPI_MADT_TRIGGER_EDGE) ? | |
383 | IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
384 | return 0; |
385 | } | |
386 | ||
1da177e4 | 387 | static int __init |
5f3b1a8b | 388 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 389 | { |
5f3b1a8b | 390 | struct acpi_madt_nmi_source *nmi_src; |
1da177e4 | 391 | |
5f3b1a8b | 392 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
393 | |
394 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
395 | return -EINVAL; | |
396 | ||
397 | /* TBD: Support nimsrc entries */ | |
398 | return 0; | |
399 | } | |
400 | ||
4be44fcd | 401 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 402 | { |
4be44fcd | 403 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
404 | |
405 | /* | |
406 | * Unfortunately ITC_DRIFT is not yet part of the | |
407 | * official SAL spec, so the ITC_DRIFT bit is not | |
408 | * set by the BIOS on this hardware. | |
409 | */ | |
410 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
411 | ||
412 | cyclone_setup(); | |
413 | } | |
414 | } | |
415 | ||
5f3b1a8b | 416 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 417 | { |
5f3b1a8b | 418 | if (!table) |
1da177e4 LT |
419 | return -EINVAL; |
420 | ||
5f3b1a8b | 421 | acpi_madt = (struct acpi_table_madt *)table; |
1da177e4 | 422 | |
55e59c51 AR |
423 | acpi_madt_rev = acpi_madt->header.revision; |
424 | ||
1da177e4 LT |
425 | /* remember the value for reference after free_initmem() */ |
426 | #ifdef CONFIG_ITANIUM | |
4be44fcd | 427 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
1da177e4 | 428 | #else |
5f3b1a8b | 429 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
1da177e4 LT |
430 | #endif |
431 | iosapic_system_init(has_8259); | |
432 | ||
433 | /* Get base address of IPI Message Block */ | |
434 | ||
5f3b1a8b AS |
435 | if (acpi_madt->address) |
436 | ipi_base_addr = ioremap(acpi_madt->address, 0); | |
1da177e4 LT |
437 | |
438 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); | |
439 | ||
440 | acpi_madt_oem_check(acpi_madt->header.oem_id, | |
4be44fcd | 441 | acpi_madt->header.oem_table_id); |
1da177e4 LT |
442 | |
443 | return 0; | |
444 | } | |
445 | ||
1da177e4 LT |
446 | #ifdef CONFIG_ACPI_NUMA |
447 | ||
448 | #undef SLIT_DEBUG | |
449 | ||
450 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) | |
451 | ||
4be44fcd | 452 | static int __initdata srat_num_cpus; /* number of cpus */ |
1da177e4 LT |
453 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; |
454 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
455 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
1da177e4 | 456 | static struct acpi_table_slit __initdata *slit_table; |
2c6e6db4 | 457 | cpumask_t early_cpu_possible_map = CPU_MASK_NONE; |
1da177e4 | 458 | |
5f3b1a8b | 459 | static int get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) |
3ad5ef8b JS |
460 | { |
461 | int pxm; | |
462 | ||
5f3b1a8b | 463 | pxm = pa->proximity_domain_lo; |
3ad5ef8b | 464 | if (ia64_platform_is("sn2")) |
5f3b1a8b | 465 | pxm += pa->proximity_domain_hi[0] << 8; |
3ad5ef8b JS |
466 | return pxm; |
467 | } | |
468 | ||
5f3b1a8b | 469 | static int get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) |
3ad5ef8b JS |
470 | { |
471 | int pxm; | |
472 | ||
473 | pxm = ma->proximity_domain; | |
defad230 AS |
474 | if (!ia64_platform_is("sn2")) |
475 | pxm &= 0xff; | |
5f3b1a8b | 476 | |
3ad5ef8b JS |
477 | return pxm; |
478 | } | |
479 | ||
1da177e4 LT |
480 | /* |
481 | * ACPI 2.0 SLIT (System Locality Information Table) | |
482 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
483 | */ | |
4be44fcd | 484 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
485 | { |
486 | u32 len; | |
487 | ||
488 | len = sizeof(struct acpi_table_header) + 8 | |
5f3b1a8b | 489 | + slit->locality_count * slit->locality_count; |
1da177e4 | 490 | if (slit->header.length != len) { |
4be44fcd LB |
491 | printk(KERN_ERR |
492 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 | 493 | len, slit->header.length); |
1da177e4 LT |
494 | return; |
495 | } | |
496 | slit_table = slit; | |
497 | } | |
498 | ||
499 | void __init | |
5f3b1a8b | 500 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
1da177e4 | 501 | { |
3ad5ef8b JS |
502 | int pxm; |
503 | ||
5f3b1a8b | 504 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
d903cea3 KK |
505 | return; |
506 | ||
3ad5ef8b JS |
507 | pxm = get_processor_proximity_domain(pa); |
508 | ||
1da177e4 | 509 | /* record this node in proximity bitmap */ |
3ad5ef8b | 510 | pxm_bit_set(pxm); |
1da177e4 | 511 | |
4be44fcd | 512 | node_cpuid[srat_num_cpus].phys_id = |
5f3b1a8b | 513 | (pa->apic_id << 8) | (pa->local_sapic_eid); |
1da177e4 | 514 | /* nid should be overridden as logical node id later */ |
3ad5ef8b | 515 | node_cpuid[srat_num_cpus].nid = pxm; |
2c6e6db4 | 516 | cpu_set(srat_num_cpus, early_cpu_possible_map); |
1da177e4 LT |
517 | srat_num_cpus++; |
518 | } | |
519 | ||
520 | void __init | |
5f3b1a8b | 521 | acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) |
1da177e4 LT |
522 | { |
523 | unsigned long paddr, size; | |
3ad5ef8b | 524 | int pxm; |
1da177e4 LT |
525 | struct node_memblk_s *p, *q, *pend; |
526 | ||
3ad5ef8b | 527 | pxm = get_memory_proximity_domain(ma); |
1da177e4 LT |
528 | |
529 | /* fill node memory chunk structure */ | |
5f3b1a8b AS |
530 | paddr = ma->base_address; |
531 | size = ma->length; | |
1da177e4 LT |
532 | |
533 | /* Ignore disabled entries */ | |
5f3b1a8b | 534 | if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) |
1da177e4 LT |
535 | return; |
536 | ||
537 | /* record this node in proximity bitmap */ | |
538 | pxm_bit_set(pxm); | |
539 | ||
540 | /* Insertion sort based on base address */ | |
541 | pend = &node_memblk[num_node_memblks]; | |
542 | for (p = &node_memblk[0]; p < pend; p++) { | |
543 | if (paddr < p->start_paddr) | |
544 | break; | |
545 | } | |
546 | if (p < pend) { | |
547 | for (q = pend - 1; q >= p; q--) | |
548 | *(q + 1) = *q; | |
549 | } | |
550 | p->start_paddr = paddr; | |
551 | p->size = size; | |
552 | p->nid = pxm; | |
553 | num_node_memblks++; | |
554 | } | |
555 | ||
4be44fcd | 556 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
557 | { |
558 | int i, j, node_from, node_to; | |
559 | ||
560 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
561 | if (srat_num_cpus == 0) { | |
562 | node_set_online(0); | |
563 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
564 | return; | |
565 | } | |
566 | ||
567 | /* | |
568 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
569 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
570 | */ | |
1da177e4 LT |
571 | nodes_clear(node_online_map); |
572 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
573 | if (pxm_bit_test(i)) { | |
762834e8 | 574 | int nid = acpi_map_pxm_to_node(i); |
1da177e4 LT |
575 | node_set_online(nid); |
576 | } | |
577 | } | |
578 | ||
579 | /* set logical node id in memory chunk structure */ | |
580 | for (i = 0; i < num_node_memblks; i++) | |
762834e8 | 581 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
1da177e4 LT |
582 | |
583 | /* assign memory bank numbers for each chunk on each node */ | |
584 | for_each_online_node(i) { | |
585 | int bank; | |
586 | ||
587 | bank = 0; | |
588 | for (j = 0; j < num_node_memblks; j++) | |
589 | if (node_memblk[j].nid == i) | |
590 | node_memblk[j].bank = bank++; | |
591 | } | |
592 | ||
593 | /* set logical node id in cpu structure */ | |
2c6e6db4 | 594 | for_each_possible_early_cpu(i) |
762834e8 | 595 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
1da177e4 | 596 | |
4be44fcd LB |
597 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
598 | num_online_nodes()); | |
599 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
600 | num_node_memblks); | |
1da177e4 | 601 | |
39b8931b FY |
602 | if (!slit_table) { |
603 | for (i = 0; i < MAX_NUMNODES; i++) | |
604 | for (j = 0; j < MAX_NUMNODES; j++) | |
605 | node_distance(i, j) = i == j ? LOCAL_DISTANCE : | |
606 | REMOTE_DISTANCE; | |
4be44fcd | 607 | return; |
39b8931b FY |
608 | } |
609 | ||
1da177e4 | 610 | memset(numa_slit, -1, sizeof(numa_slit)); |
5f3b1a8b | 611 | for (i = 0; i < slit_table->locality_count; i++) { |
1da177e4 LT |
612 | if (!pxm_bit_test(i)) |
613 | continue; | |
762834e8 | 614 | node_from = pxm_to_node(i); |
5f3b1a8b | 615 | for (j = 0; j < slit_table->locality_count; j++) { |
1da177e4 LT |
616 | if (!pxm_bit_test(j)) |
617 | continue; | |
762834e8 | 618 | node_to = pxm_to_node(j); |
1da177e4 | 619 | node_distance(node_from, node_to) = |
5f3b1a8b | 620 | slit_table->entry[i * slit_table->locality_count + j]; |
1da177e4 LT |
621 | } |
622 | } | |
623 | ||
624 | #ifdef SLIT_DEBUG | |
625 | printk("ACPI 2.0 SLIT locality table:\n"); | |
626 | for_each_online_node(i) { | |
627 | for_each_online_node(j) | |
4be44fcd | 628 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
629 | printk("\n"); |
630 | } | |
631 | #endif | |
632 | } | |
4be44fcd | 633 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 634 | |
1f3a6a15 KK |
635 | /* |
636 | * success: return IRQ number (>=0) | |
637 | * failure: return < 0 | |
638 | */ | |
a2f809b0 | 639 | int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) |
1da177e4 | 640 | { |
3948ec94 JK |
641 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
642 | return gsi; | |
643 | ||
1da177e4 LT |
644 | if (has_8259 && gsi < 16) |
645 | return isa_irq_to_vector(gsi); | |
646 | ||
647 | return iosapic_register_intr(gsi, | |
cb654695 | 648 | (polarity == |
4be44fcd LB |
649 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
650 | IOSAPIC_POL_LOW, | |
cb654695 | 651 | (triggering == |
4be44fcd LB |
652 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
653 | IOSAPIC_LEVEL); | |
1da177e4 | 654 | } |
4be44fcd | 655 | |
4be44fcd | 656 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 | 657 | { |
72253943 JK |
658 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
659 | return; | |
660 | ||
3fb2c74e PB |
661 | if (has_8259 && gsi < 16) |
662 | return; | |
663 | ||
1da177e4 LT |
664 | iosapic_unregister_intr(gsi); |
665 | } | |
4be44fcd | 666 | |
5f3b1a8b | 667 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 LT |
668 | { |
669 | struct acpi_table_header *fadt_header; | |
cee324b1 | 670 | struct acpi_table_fadt *fadt; |
1da177e4 | 671 | |
5f3b1a8b | 672 | if (!table) |
1da177e4 LT |
673 | return -EINVAL; |
674 | ||
5f3b1a8b | 675 | fadt_header = (struct acpi_table_header *)table; |
1da177e4 | 676 | if (fadt_header->revision != 3) |
4be44fcd | 677 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 678 | |
cee324b1 | 679 | fadt = (struct acpi_table_fadt *)fadt_header; |
1da177e4 | 680 | |
a2f809b0 YL |
681 | acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, |
682 | ACPI_ACTIVE_LOW); | |
1da177e4 LT |
683 | return 0; |
684 | } | |
685 | ||
62ee0540 DC |
686 | int __init early_acpi_boot_init(void) |
687 | { | |
688 | int ret; | |
689 | ||
690 | /* | |
691 | * do a partial walk of MADT to determine how many CPUs | |
692 | * we have including offline CPUs | |
693 | */ | |
694 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
695 | printk(KERN_ERR PREFIX "Can't find MADT\n"); | |
696 | return 0; | |
697 | } | |
698 | ||
699 | ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, | |
700 | acpi_parse_lsapic, NR_CPUS); | |
701 | if (ret < 1) | |
702 | printk(KERN_ERR PREFIX | |
703 | "Error parsing MADT - no LAPIC entries\n"); | |
704 | ||
12cda817 TH |
705 | #ifdef CONFIG_SMP |
706 | if (available_cpus == 0) { | |
707 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
708 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
709 | smp_boot_data.cpu_phys_id[available_cpus] = | |
710 | hard_smp_processor_id(); | |
711 | available_cpus = 1; /* We've got at least one of these, no? */ | |
712 | } | |
713 | smp_boot_data.cpu_count = available_cpus; | |
714 | #endif | |
715 | /* Make boot-up look pretty */ | |
716 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, | |
717 | total_cpus); | |
718 | ||
62ee0540 DC |
719 | return 0; |
720 | } | |
721 | ||
4be44fcd | 722 | int __init acpi_boot_init(void) |
1da177e4 LT |
723 | { |
724 | ||
725 | /* | |
726 | * MADT | |
727 | * ---- | |
728 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
729 | * Note that this table provides platform SMP configuration | |
730 | * information -- the successor to MPS tables. | |
731 | */ | |
732 | ||
db2d4ccd | 733 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
734 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
735 | goto skip_madt; | |
736 | } | |
737 | ||
738 | /* Local APIC */ | |
739 | ||
4be44fcd | 740 | if (acpi_table_parse_madt |
5f3b1a8b | 741 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
4be44fcd LB |
742 | printk(KERN_ERR PREFIX |
743 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 744 | |
5f3b1a8b | 745 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
4be44fcd | 746 | < 0) |
1da177e4 LT |
747 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
748 | ||
749 | /* I/O APIC */ | |
750 | ||
4be44fcd | 751 | if (acpi_table_parse_madt |
7f6ff62a GB |
752 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { |
753 | if (!ia64_platform_is("sn2")) | |
754 | printk(KERN_ERR PREFIX | |
755 | "Error parsing MADT - no IOSAPIC entries\n"); | |
756 | } | |
1da177e4 LT |
757 | |
758 | /* System-Level Interrupt Routing */ | |
759 | ||
4be44fcd | 760 | if (acpi_table_parse_madt |
5f3b1a8b | 761 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
4be44fcd LB |
762 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
763 | printk(KERN_ERR PREFIX | |
764 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 765 | |
4be44fcd | 766 | if (acpi_table_parse_madt |
5f3b1a8b | 767 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
4be44fcd LB |
768 | printk(KERN_ERR PREFIX |
769 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 | 770 | |
5f3b1a8b | 771 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
1da177e4 | 772 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
4be44fcd | 773 | skip_madt: |
1da177e4 LT |
774 | |
775 | /* | |
776 | * FADT says whether a legacy keyboard controller is present. | |
777 | * The FADT also contains an SCI_INT line, by which the system | |
778 | * gets interrupts such as power and sleep buttons. If it's not | |
779 | * on a Legacy interrupt, it needs to be setup. | |
780 | */ | |
db2d4ccd | 781 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
1da177e4 LT |
782 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
783 | ||
12cda817 | 784 | #ifdef CONFIG_ACPI_NUMA |
1da177e4 | 785 | #ifdef CONFIG_SMP |
1da177e4 LT |
786 | if (srat_num_cpus == 0) { |
787 | int cpu, i = 1; | |
788 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
789 | if (smp_boot_data.cpu_phys_id[cpu] != |
790 | hard_smp_processor_id()) | |
791 | node_cpuid[i++].phys_id = | |
792 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 793 | } |
8d7e3517 | 794 | #endif |
8d7e3517 | 795 | build_cpu_to_node_map(); |
1da177e4 | 796 | #endif |
1da177e4 LT |
797 | return 0; |
798 | } | |
799 | ||
4be44fcd | 800 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 | 801 | { |
3c3738c8 | 802 | int tmp; |
1da177e4 LT |
803 | |
804 | if (has_8259 && gsi < 16) | |
805 | *irq = isa_irq_to_vector(gsi); | |
806 | else { | |
3c3738c8 KK |
807 | tmp = gsi_to_irq(gsi); |
808 | if (tmp == -1) | |
1da177e4 | 809 | return -1; |
3c3738c8 | 810 | *irq = tmp; |
1da177e4 LT |
811 | } |
812 | return 0; | |
813 | } | |
814 | ||
815 | /* | |
816 | * ACPI based hotplug CPU support | |
817 | */ | |
818 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
819 | static | |
efc7508c | 820 | int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
1da177e4 LT |
821 | { |
822 | #ifdef CONFIG_ACPI_NUMA | |
4be44fcd | 823 | int pxm_id; |
08992986 | 824 | int nid; |
1da177e4 LT |
825 | |
826 | pxm_id = acpi_get_pxm(handle); | |
1da177e4 | 827 | /* |
08992986 KH |
828 | * We don't have cpu-only-node hotadd. But if the system equips |
829 | * SRAT table, pxm is already found and node is ready. | |
830 | * So, just pxm_to_nid(pxm) is OK. | |
831 | * This code here is for the system which doesn't have full SRAT | |
832 | * table for possible cpus. | |
1da177e4 | 833 | */ |
08992986 | 834 | nid = acpi_map_pxm_to_node(pxm_id); |
4be44fcd | 835 | node_cpuid[cpu].phys_id = physid; |
08992986 | 836 | node_cpuid[cpu].nid = nid; |
1da177e4 | 837 | #endif |
4be44fcd | 838 | return (0); |
1da177e4 LT |
839 | } |
840 | ||
a6b14fa6 AR |
841 | int additional_cpus __initdata = -1; |
842 | ||
843 | static __init int setup_additional_cpus(char *s) | |
844 | { | |
845 | if (s) | |
846 | additional_cpus = simple_strtol(s, NULL, 0); | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
851 | early_param("additional_cpus", setup_additional_cpus); | |
852 | ||
853 | /* | |
72fdbdce | 854 | * cpu_possible_map should be static, it cannot change as CPUs |
a6b14fa6 AR |
855 | * are onlined, or offlined. The reason is per-cpu data-structures |
856 | * are allocated by some modules at init time, and dont expect to | |
857 | * do this dynamically on cpu arrival/departure. | |
858 | * cpu_present_map on the other hand can change dynamically. | |
859 | * In case when cpu_hotplug is not compiled, then we resort to current | |
860 | * behaviour, which is cpu_possible == cpu_present. | |
861 | * - Ashok Raj | |
862 | * | |
863 | * Three ways to find out the number of additional hotplug CPUs: | |
864 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. | |
865 | * - The user can overwrite it with additional_cpus=NUM | |
866 | * - Otherwise don't reserve additional CPUs. | |
867 | */ | |
868 | __init void prefill_possible_map(void) | |
869 | { | |
870 | int i; | |
871 | int possible, disabled_cpus; | |
872 | ||
873 | disabled_cpus = total_cpus - available_cpus; | |
8f8b1138 | 874 | |
a6b14fa6 | 875 | if (additional_cpus == -1) { |
8f8b1138 | 876 | if (disabled_cpus > 0) |
a6b14fa6 | 877 | additional_cpus = disabled_cpus; |
8f8b1138 | 878 | else |
a6b14fa6 | 879 | additional_cpus = 0; |
8f8b1138 AR |
880 | } |
881 | ||
882 | possible = available_cpus + additional_cpus; | |
883 | ||
a6b14fa6 AR |
884 | if (possible > NR_CPUS) |
885 | possible = NR_CPUS; | |
886 | ||
887 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", | |
8f8b1138 | 888 | possible, max((possible - available_cpus), 0)); |
a6b14fa6 AR |
889 | |
890 | for (i = 0; i < possible; i++) | |
2af51a3f | 891 | set_cpu_possible(i, true); |
a6b14fa6 AR |
892 | } |
893 | ||
4be44fcd | 894 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 895 | { |
4be44fcd | 896 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 897 | union acpi_object *obj; |
5f3b1a8b | 898 | struct acpi_madt_local_sapic *lsapic; |
1da177e4 | 899 | cpumask_t tmp_map; |
efc7508c | 900 | int cpu, physid; |
4be44fcd | 901 | |
1da177e4 LT |
902 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
903 | return -EINVAL; | |
904 | ||
4be44fcd | 905 | if (!buffer.length || !buffer.pointer) |
1da177e4 | 906 | return -EINVAL; |
4be44fcd | 907 | |
1da177e4 | 908 | obj = buffer.pointer; |
5f3b1a8b AS |
909 | if (obj->type != ACPI_TYPE_BUFFER) |
910 | { | |
02438d87 | 911 | kfree(buffer.pointer); |
1da177e4 LT |
912 | return -EINVAL; |
913 | } | |
914 | ||
5f3b1a8b | 915 | lsapic = (struct acpi_madt_local_sapic *)obj->buffer.pointer; |
1da177e4 | 916 | |
5f3b1a8b | 917 | if ((lsapic->header.type != ACPI_MADT_TYPE_LOCAL_SAPIC) || |
965d7472 | 918 | (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))) { |
02438d87 | 919 | kfree(buffer.pointer); |
1da177e4 LT |
920 | return -EINVAL; |
921 | } | |
922 | ||
4be44fcd | 923 | physid = ((lsapic->id << 8) | (lsapic->eid)); |
1da177e4 | 924 | |
02438d87 | 925 | kfree(buffer.pointer); |
1da177e4 LT |
926 | buffer.length = ACPI_ALLOCATE_BUFFER; |
927 | buffer.pointer = NULL; | |
928 | ||
5dd3c994 RR |
929 | cpumask_complement(&tmp_map, cpu_present_mask); |
930 | cpu = cpumask_first(&tmp_map); | |
931 | if (cpu >= nr_cpu_ids) | |
1da177e4 LT |
932 | return -EINVAL; |
933 | ||
934 | acpi_map_cpu2node(handle, cpu, physid); | |
935 | ||
4be44fcd | 936 | cpu_set(cpu, cpu_present_map); |
1da177e4 | 937 | ia64_cpu_to_sapicid[cpu] = physid; |
1da177e4 LT |
938 | |
939 | *pcpu = cpu; | |
4be44fcd | 940 | return (0); |
1da177e4 | 941 | } |
1da177e4 | 942 | |
4be44fcd | 943 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 944 | |
4be44fcd | 945 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 946 | { |
1da177e4 | 947 | ia64_cpu_to_sapicid[cpu] = -1; |
4be44fcd | 948 | cpu_clear(cpu, cpu_present_map); |
1da177e4 LT |
949 | |
950 | #ifdef CONFIG_ACPI_NUMA | |
951 | /* NUMA specific cleanup's */ | |
952 | #endif | |
953 | ||
4be44fcd | 954 | return (0); |
1da177e4 | 955 | } |
4be44fcd | 956 | |
1da177e4 | 957 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 958 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 LT |
959 | |
960 | #ifdef CONFIG_ACPI_NUMA | |
650316f1 | 961 | static acpi_status __devinit |
4be44fcd | 962 | acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) |
1da177e4 | 963 | { |
4be44fcd | 964 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 | 965 | union acpi_object *obj; |
5f3b1a8b | 966 | struct acpi_madt_io_sapic *iosapic; |
1da177e4 | 967 | unsigned int gsi_base; |
bb0fc085 | 968 | int pxm, node; |
1da177e4 LT |
969 | |
970 | /* Only care about objects w/ a method that returns the MADT */ | |
971 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
972 | return AE_OK; | |
973 | ||
974 | if (!buffer.length || !buffer.pointer) | |
975 | return AE_OK; | |
976 | ||
977 | obj = buffer.pointer; | |
978 | if (obj->type != ACPI_TYPE_BUFFER || | |
979 | obj->buffer.length < sizeof(*iosapic)) { | |
02438d87 | 980 | kfree(buffer.pointer); |
1da177e4 LT |
981 | return AE_OK; |
982 | } | |
983 | ||
5f3b1a8b | 984 | iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; |
1da177e4 | 985 | |
5f3b1a8b | 986 | if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { |
02438d87 | 987 | kfree(buffer.pointer); |
1da177e4 LT |
988 | return AE_OK; |
989 | } | |
990 | ||
991 | gsi_base = iosapic->global_irq_base; | |
992 | ||
02438d87 | 993 | kfree(buffer.pointer); |
1da177e4 LT |
994 | |
995 | /* | |
bb0fc085 | 996 | * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell |
1da177e4 LT |
997 | * us which node to associate this with. |
998 | */ | |
bb0fc085 AW |
999 | pxm = acpi_get_pxm(handle); |
1000 | if (pxm < 0) | |
1da177e4 | 1001 | return AE_OK; |
1da177e4 | 1002 | |
762834e8 | 1003 | node = pxm_to_node(pxm); |
1da177e4 LT |
1004 | |
1005 | if (node >= MAX_NUMNODES || !node_online(node) || | |
fbb776c3 | 1006 | cpumask_empty(cpumask_of_node(node))) |
1da177e4 LT |
1007 | return AE_OK; |
1008 | ||
1009 | /* We know a gsi to node mapping! */ | |
1010 | map_iosapic_to_node(gsi_base, node); | |
1011 | return AE_OK; | |
1012 | } | |
650316f1 BH |
1013 | |
1014 | static int __init | |
1015 | acpi_map_iosapics (void) | |
1016 | { | |
1017 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); | |
1018 | return 0; | |
1019 | } | |
1020 | ||
1021 | fs_initcall(acpi_map_iosapics); | |
1022 | #endif /* CONFIG_ACPI_NUMA */ | |
b1bb248a | 1023 | |
c5b5a599 | 1024 | int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a | 1025 | { |
0e888adc KK |
1026 | int err; |
1027 | ||
1028 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
1029 | return err; | |
1030 | ||
24b8e0cc | 1031 | #ifdef CONFIG_ACPI_NUMA |
0e888adc | 1032 | acpi_map_iosapic(handle, 0, NULL, NULL); |
4be44fcd | 1033 | #endif /* CONFIG_ACPI_NUMA */ |
0e888adc KK |
1034 | |
1035 | return 0; | |
b1bb248a | 1036 | } |
4be44fcd | 1037 | |
b1bb248a KK |
1038 | EXPORT_SYMBOL(acpi_register_ioapic); |
1039 | ||
4be44fcd | 1040 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a | 1041 | { |
0e888adc | 1042 | return iosapic_remove(gsi_base); |
b1bb248a | 1043 | } |
4be44fcd | 1044 | |
b1bb248a KK |
1045 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
1046 | ||
e8b2fd01 LB |
1047 | /* |
1048 | * acpi_save_state_mem() - save kernel state | |
1049 | * | |
1050 | * TBD when when IA64 starts to support suspend... | |
1051 | */ | |
1052 | int acpi_save_state_mem(void) { return 0; } | |
1053 | ||
1054 | /* | |
1055 | * acpi_restore_state() | |
1056 | */ | |
1057 | void acpi_restore_state_mem(void) {} | |
1058 | ||
1059 | /* | |
1060 | * do_suspend_lowlevel() | |
1061 | */ | |
1062 | void do_suspend_lowlevel(void) {} | |
1063 | ||
888ba6c6 | 1064 | #endif /* CONFIG_ACPI */ |