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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 | ||
35 | #include <linux/config.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/sched.h> | |
40 | #include <linux/smp.h> | |
41 | #include <linux/string.h> | |
42 | #include <linux/types.h> | |
43 | #include <linux/irq.h> | |
44 | #include <linux/acpi.h> | |
45 | #include <linux/efi.h> | |
46 | #include <linux/mmzone.h> | |
47 | #include <linux/nodemask.h> | |
48 | #include <asm/io.h> | |
49 | #include <asm/iosapic.h> | |
50 | #include <asm/machvec.h> | |
51 | #include <asm/page.h> | |
52 | #include <asm/system.h> | |
53 | #include <asm/numa.h> | |
54 | #include <asm/sal.h> | |
55 | #include <asm/cyclone.h> | |
56 | ||
57 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
58 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
59 | ((acpi_table_entry_header *)entry)->length != sizeof(*entry)) | |
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 | ||
68 | unsigned char acpi_kbd_controller_present = 1; | |
69 | unsigned char acpi_legacy_devices; | |
70 | ||
55e59c51 AR |
71 | static unsigned int __initdata acpi_madt_rev; |
72 | ||
73 | unsigned int acpi_cpei_override; | |
74 | unsigned int acpi_cpei_phys_cpuid; | |
75 | ||
1da177e4 | 76 | #define MAX_SAPICS 256 |
702c7e76 | 77 | u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = {[0 ... MAX_SAPICS - 1] = -1 }; |
4be44fcd | 78 | |
1da177e4 LT |
79 | EXPORT_SYMBOL(ia64_acpiid_to_sapicid); |
80 | ||
4be44fcd | 81 | const char *acpi_get_sysname(void) |
1da177e4 LT |
82 | { |
83 | #ifdef CONFIG_IA64_GENERIC | |
84 | unsigned long rsdp_phys; | |
85 | struct acpi20_table_rsdp *rsdp; | |
86 | struct acpi_table_xsdt *xsdt; | |
87 | struct acpi_table_header *hdr; | |
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 | ||
4be44fcd | 96 | rsdp = (struct acpi20_table_rsdp *)__va(rsdp_phys); |
1da177e4 | 97 | if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 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 | ||
4be44fcd | 103 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_address); |
1da177e4 LT |
104 | hdr = &xsdt->header; |
105 | if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 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")) { |
1da177e4 LT |
114 | return "sn2"; |
115 | } | |
116 | ||
117 | return "dig"; | |
118 | #else | |
119 | # if defined (CONFIG_IA64_HP_SIM) | |
120 | return "hpsim"; | |
121 | # elif defined (CONFIG_IA64_HP_ZX1) | |
122 | return "hpzx1"; | |
123 | # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) | |
124 | return "hpzx1_swiotlb"; | |
125 | # elif defined (CONFIG_IA64_SGI_SN2) | |
126 | return "sn2"; | |
127 | # elif defined (CONFIG_IA64_DIG) | |
128 | return "dig"; | |
129 | # else | |
130 | # error Unknown platform. Fix acpi.c. | |
131 | # endif | |
132 | #endif | |
133 | } | |
134 | ||
888ba6c6 | 135 | #ifdef CONFIG_ACPI |
1da177e4 LT |
136 | |
137 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 | |
138 | ||
139 | /* Array to record platform interrupt vectors for generic interrupt routing. */ | |
140 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { | |
141 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 | |
142 | }; | |
143 | ||
144 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; | |
145 | ||
146 | /* | |
147 | * Interrupt routing API for device drivers. Provides interrupt vector for | |
148 | * a generic platform event. Currently only CPEI is implemented. | |
149 | */ | |
4be44fcd | 150 | int acpi_request_vector(u32 int_type) |
1da177e4 LT |
151 | { |
152 | int vector = -1; | |
153 | ||
154 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { | |
155 | /* corrected platform error interrupt */ | |
156 | vector = platform_intr_list[int_type]; | |
157 | } else | |
4be44fcd LB |
158 | printk(KERN_ERR |
159 | "acpi_request_vector(): invalid interrupt type\n"); | |
1da177e4 LT |
160 | return vector; |
161 | } | |
162 | ||
4be44fcd | 163 | char *__acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
164 | { |
165 | return __va(phys_addr); | |
166 | } | |
167 | ||
168 | /* -------------------------------------------------------------------------- | |
169 | Boot-time Table Parsing | |
170 | -------------------------------------------------------------------------- */ | |
171 | ||
4be44fcd LB |
172 | static int total_cpus __initdata; |
173 | static int available_cpus __initdata; | |
174 | struct acpi_table_madt *acpi_madt __initdata; | |
175 | static u8 has_8259; | |
1da177e4 LT |
176 | |
177 | static int __init | |
4be44fcd LB |
178 | acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header, |
179 | const unsigned long end) | |
1da177e4 LT |
180 | { |
181 | struct acpi_table_lapic_addr_ovr *lapic; | |
182 | ||
4be44fcd | 183 | lapic = (struct acpi_table_lapic_addr_ovr *)header; |
1da177e4 LT |
184 | |
185 | if (BAD_MADT_ENTRY(lapic, end)) | |
186 | return -EINVAL; | |
187 | ||
188 | if (lapic->address) { | |
189 | iounmap(ipi_base_addr); | |
190 | ipi_base_addr = ioremap(lapic->address, 0); | |
191 | } | |
192 | return 0; | |
193 | } | |
194 | ||
1da177e4 | 195 | static int __init |
4be44fcd | 196 | acpi_parse_lsapic(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
197 | { |
198 | struct acpi_table_lsapic *lsapic; | |
199 | ||
4be44fcd | 200 | lsapic = (struct acpi_table_lsapic *)header; |
1da177e4 LT |
201 | |
202 | if (BAD_MADT_ENTRY(lsapic, end)) | |
203 | return -EINVAL; | |
204 | ||
205 | if (lsapic->flags.enabled) { | |
206 | #ifdef CONFIG_SMP | |
4be44fcd LB |
207 | smp_boot_data.cpu_phys_id[available_cpus] = |
208 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 | 209 | #endif |
4be44fcd LB |
210 | ia64_acpiid_to_sapicid[lsapic->acpi_id] = |
211 | (lsapic->id << 8) | lsapic->eid; | |
1da177e4 LT |
212 | ++available_cpus; |
213 | } | |
214 | ||
215 | total_cpus++; | |
216 | return 0; | |
217 | } | |
218 | ||
1da177e4 | 219 | static int __init |
4be44fcd | 220 | acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
221 | { |
222 | struct acpi_table_lapic_nmi *lacpi_nmi; | |
223 | ||
4be44fcd | 224 | lacpi_nmi = (struct acpi_table_lapic_nmi *)header; |
1da177e4 LT |
225 | |
226 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) | |
227 | return -EINVAL; | |
228 | ||
229 | /* TBD: Support lapic_nmi entries */ | |
230 | return 0; | |
231 | } | |
232 | ||
1da177e4 | 233 | static int __init |
4be44fcd | 234 | acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
235 | { |
236 | struct acpi_table_iosapic *iosapic; | |
237 | ||
4be44fcd | 238 | iosapic = (struct acpi_table_iosapic *)header; |
1da177e4 LT |
239 | |
240 | if (BAD_MADT_ENTRY(iosapic, end)) | |
241 | return -EINVAL; | |
242 | ||
0e888adc | 243 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
1da177e4 LT |
244 | } |
245 | ||
1da177e4 | 246 | static int __init |
4be44fcd LB |
247 | acpi_parse_plat_int_src(acpi_table_entry_header * header, |
248 | const unsigned long end) | |
1da177e4 LT |
249 | { |
250 | struct acpi_table_plat_int_src *plintsrc; | |
251 | int vector; | |
252 | ||
4be44fcd | 253 | plintsrc = (struct acpi_table_plat_int_src *)header; |
1da177e4 LT |
254 | |
255 | if (BAD_MADT_ENTRY(plintsrc, end)) | |
256 | return -EINVAL; | |
257 | ||
258 | /* | |
259 | * Get vector assignment for this interrupt, set attributes, | |
260 | * and program the IOSAPIC routing table. | |
261 | */ | |
262 | vector = iosapic_register_platform_intr(plintsrc->type, | |
263 | plintsrc->global_irq, | |
264 | plintsrc->iosapic_vector, | |
265 | plintsrc->eid, | |
266 | plintsrc->id, | |
4be44fcd LB |
267 | (plintsrc->flags.polarity == |
268 | 1) ? IOSAPIC_POL_HIGH : | |
269 | IOSAPIC_POL_LOW, | |
270 | (plintsrc->flags.trigger == | |
271 | 1) ? IOSAPIC_EDGE : | |
272 | IOSAPIC_LEVEL); | |
1da177e4 LT |
273 | |
274 | platform_intr_list[plintsrc->type] = vector; | |
55e59c51 AR |
275 | if (acpi_madt_rev > 1) { |
276 | acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag; | |
277 | } | |
278 | ||
279 | /* | |
280 | * Save the physical id, so we can check when its being removed | |
281 | */ | |
282 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; | |
283 | ||
1da177e4 LT |
284 | return 0; |
285 | } | |
286 | ||
b88e9265 | 287 | #ifdef CONFIG_HOTPLUG_CPU |
55e59c51 AR |
288 | unsigned int can_cpei_retarget(void) |
289 | { | |
290 | extern int cpe_vector; | |
ff741906 | 291 | extern unsigned int force_cpei_retarget; |
55e59c51 AR |
292 | |
293 | /* | |
294 | * Only if CPEI is supported and the override flag | |
295 | * is present, otherwise return that its re-targettable | |
296 | * if we are in polling mode. | |
297 | */ | |
ff741906 AR |
298 | if (cpe_vector > 0) { |
299 | if (acpi_cpei_override || force_cpei_retarget) | |
300 | return 1; | |
301 | else | |
302 | return 0; | |
303 | } | |
304 | return 1; | |
55e59c51 AR |
305 | } |
306 | ||
307 | unsigned int is_cpu_cpei_target(unsigned int cpu) | |
308 | { | |
309 | unsigned int logical_id; | |
310 | ||
311 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); | |
312 | ||
313 | if (logical_id == cpu) | |
314 | return 1; | |
315 | else | |
316 | return 0; | |
317 | } | |
318 | ||
319 | void set_cpei_target_cpu(unsigned int cpu) | |
320 | { | |
321 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); | |
322 | } | |
b88e9265 | 323 | #endif |
55e59c51 AR |
324 | |
325 | unsigned int get_cpei_target_cpu(void) | |
326 | { | |
327 | return acpi_cpei_phys_cpuid; | |
328 | } | |
329 | ||
1da177e4 | 330 | static int __init |
4be44fcd LB |
331 | acpi_parse_int_src_ovr(acpi_table_entry_header * header, |
332 | const unsigned long end) | |
1da177e4 LT |
333 | { |
334 | struct acpi_table_int_src_ovr *p; | |
335 | ||
4be44fcd | 336 | p = (struct acpi_table_int_src_ovr *)header; |
1da177e4 LT |
337 | |
338 | if (BAD_MADT_ENTRY(p, end)) | |
339 | return -EINVAL; | |
340 | ||
341 | iosapic_override_isa_irq(p->bus_irq, p->global_irq, | |
4be44fcd LB |
342 | (p->flags.polarity == |
343 | 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, | |
344 | (p->flags.trigger == | |
345 | 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); | |
1da177e4 LT |
346 | return 0; |
347 | } | |
348 | ||
1da177e4 | 349 | static int __init |
4be44fcd | 350 | acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
351 | { |
352 | struct acpi_table_nmi_src *nmi_src; | |
353 | ||
4be44fcd | 354 | nmi_src = (struct acpi_table_nmi_src *)header; |
1da177e4 LT |
355 | |
356 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
357 | return -EINVAL; | |
358 | ||
359 | /* TBD: Support nimsrc entries */ | |
360 | return 0; | |
361 | } | |
362 | ||
4be44fcd | 363 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 | 364 | { |
4be44fcd | 365 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
1da177e4 LT |
366 | |
367 | /* | |
368 | * Unfortunately ITC_DRIFT is not yet part of the | |
369 | * official SAL spec, so the ITC_DRIFT bit is not | |
370 | * set by the BIOS on this hardware. | |
371 | */ | |
372 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; | |
373 | ||
374 | cyclone_setup(); | |
375 | } | |
376 | } | |
377 | ||
4be44fcd | 378 | static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
379 | { |
380 | if (!phys_addr || !size) | |
381 | return -EINVAL; | |
382 | ||
4be44fcd | 383 | acpi_madt = (struct acpi_table_madt *)__va(phys_addr); |
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 LT |
390 | #else |
391 | has_8259 = acpi_madt->flags.pcat_compat; | |
392 | #endif | |
393 | iosapic_system_init(has_8259); | |
394 | ||
395 | /* Get base address of IPI Message Block */ | |
396 | ||
397 | if (acpi_madt->lapic_address) | |
398 | ipi_base_addr = ioremap(acpi_madt->lapic_address, 0); | |
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 */ |
1da177e4 LT |
415 | static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; |
416 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) | |
417 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) | |
418 | /* maps to convert between proximity domain and logical node ID */ | |
419 | int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS]; | |
420 | int __initdata nid_to_pxm_map[MAX_NUMNODES]; | |
421 | static struct acpi_table_slit __initdata *slit_table; | |
422 | ||
423 | /* | |
424 | * ACPI 2.0 SLIT (System Locality Information Table) | |
425 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf | |
426 | */ | |
4be44fcd | 427 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
1da177e4 LT |
428 | { |
429 | u32 len; | |
430 | ||
431 | len = sizeof(struct acpi_table_header) + 8 | |
4be44fcd | 432 | + slit->localities * slit->localities; |
1da177e4 | 433 | if (slit->header.length != len) { |
4be44fcd LB |
434 | printk(KERN_ERR |
435 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", | |
1da177e4 LT |
436 | len, slit->header.length); |
437 | memset(numa_slit, 10, sizeof(numa_slit)); | |
438 | return; | |
439 | } | |
440 | slit_table = slit; | |
441 | } | |
442 | ||
443 | void __init | |
4be44fcd | 444 | acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa) |
1da177e4 LT |
445 | { |
446 | /* record this node in proximity bitmap */ | |
447 | pxm_bit_set(pa->proximity_domain); | |
448 | ||
4be44fcd LB |
449 | node_cpuid[srat_num_cpus].phys_id = |
450 | (pa->apic_id << 8) | (pa->lsapic_eid); | |
1da177e4 LT |
451 | /* nid should be overridden as logical node id later */ |
452 | node_cpuid[srat_num_cpus].nid = pa->proximity_domain; | |
453 | srat_num_cpus++; | |
454 | } | |
455 | ||
456 | void __init | |
4be44fcd | 457 | acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma) |
1da177e4 LT |
458 | { |
459 | unsigned long paddr, size; | |
460 | u8 pxm; | |
461 | struct node_memblk_s *p, *q, *pend; | |
462 | ||
463 | pxm = ma->proximity_domain; | |
464 | ||
465 | /* fill node memory chunk structure */ | |
466 | paddr = ma->base_addr_hi; | |
467 | paddr = (paddr << 32) | ma->base_addr_lo; | |
468 | size = ma->length_hi; | |
469 | size = (size << 32) | ma->length_lo; | |
470 | ||
471 | /* Ignore disabled entries */ | |
472 | if (!ma->flags.enabled) | |
473 | return; | |
474 | ||
475 | /* record this node in proximity bitmap */ | |
476 | pxm_bit_set(pxm); | |
477 | ||
478 | /* Insertion sort based on base address */ | |
479 | pend = &node_memblk[num_node_memblks]; | |
480 | for (p = &node_memblk[0]; p < pend; p++) { | |
481 | if (paddr < p->start_paddr) | |
482 | break; | |
483 | } | |
484 | if (p < pend) { | |
485 | for (q = pend - 1; q >= p; q--) | |
486 | *(q + 1) = *q; | |
487 | } | |
488 | p->start_paddr = paddr; | |
489 | p->size = size; | |
490 | p->nid = pxm; | |
491 | num_node_memblks++; | |
492 | } | |
493 | ||
4be44fcd | 494 | void __init acpi_numa_arch_fixup(void) |
1da177e4 LT |
495 | { |
496 | int i, j, node_from, node_to; | |
497 | ||
498 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ | |
499 | if (srat_num_cpus == 0) { | |
500 | node_set_online(0); | |
501 | node_cpuid[0].phys_id = hard_smp_processor_id(); | |
502 | return; | |
503 | } | |
504 | ||
505 | /* | |
506 | * MCD - This can probably be dropped now. No need for pxm ID to node ID | |
507 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. | |
508 | */ | |
509 | /* calculate total number of nodes in system from PXM bitmap */ | |
510 | memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map)); | |
511 | memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map)); | |
512 | nodes_clear(node_online_map); | |
513 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { | |
514 | if (pxm_bit_test(i)) { | |
515 | int nid = num_online_nodes(); | |
516 | pxm_to_nid_map[i] = nid; | |
517 | nid_to_pxm_map[nid] = i; | |
518 | node_set_online(nid); | |
519 | } | |
520 | } | |
521 | ||
522 | /* set logical node id in memory chunk structure */ | |
523 | for (i = 0; i < num_node_memblks; i++) | |
524 | node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid]; | |
525 | ||
526 | /* assign memory bank numbers for each chunk on each node */ | |
527 | for_each_online_node(i) { | |
528 | int bank; | |
529 | ||
530 | bank = 0; | |
531 | for (j = 0; j < num_node_memblks; j++) | |
532 | if (node_memblk[j].nid == i) | |
533 | node_memblk[j].bank = bank++; | |
534 | } | |
535 | ||
536 | /* set logical node id in cpu structure */ | |
537 | for (i = 0; i < srat_num_cpus; i++) | |
538 | node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid]; | |
539 | ||
4be44fcd LB |
540 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
541 | num_online_nodes()); | |
542 | printk(KERN_INFO "Number of memory chunks in system = %d\n", | |
543 | num_node_memblks); | |
1da177e4 | 544 | |
4be44fcd LB |
545 | if (!slit_table) |
546 | return; | |
1da177e4 | 547 | memset(numa_slit, -1, sizeof(numa_slit)); |
4be44fcd | 548 | for (i = 0; i < slit_table->localities; i++) { |
1da177e4 LT |
549 | if (!pxm_bit_test(i)) |
550 | continue; | |
551 | node_from = pxm_to_nid_map[i]; | |
4be44fcd | 552 | for (j = 0; j < slit_table->localities; j++) { |
1da177e4 LT |
553 | if (!pxm_bit_test(j)) |
554 | continue; | |
555 | node_to = pxm_to_nid_map[j]; | |
556 | node_distance(node_from, node_to) = | |
4be44fcd | 557 | slit_table->entry[i * slit_table->localities + j]; |
1da177e4 LT |
558 | } |
559 | } | |
560 | ||
561 | #ifdef SLIT_DEBUG | |
562 | printk("ACPI 2.0 SLIT locality table:\n"); | |
563 | for_each_online_node(i) { | |
564 | for_each_online_node(j) | |
4be44fcd | 565 | printk("%03d ", node_distance(i, j)); |
1da177e4 LT |
566 | printk("\n"); |
567 | } | |
568 | #endif | |
569 | } | |
4be44fcd | 570 | #endif /* CONFIG_ACPI_NUMA */ |
1da177e4 | 571 | |
1f3a6a15 KK |
572 | /* |
573 | * success: return IRQ number (>=0) | |
574 | * failure: return < 0 | |
575 | */ | |
4be44fcd | 576 | int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low) |
1da177e4 LT |
577 | { |
578 | if (has_8259 && gsi < 16) | |
579 | return isa_irq_to_vector(gsi); | |
580 | ||
581 | return iosapic_register_intr(gsi, | |
4be44fcd LB |
582 | (active_high_low == |
583 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : | |
584 | IOSAPIC_POL_LOW, | |
585 | (edge_level == | |
586 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : | |
587 | IOSAPIC_LEVEL); | |
1da177e4 | 588 | } |
4be44fcd | 589 | |
1da177e4 LT |
590 | EXPORT_SYMBOL(acpi_register_gsi); |
591 | ||
4be44fcd | 592 | void acpi_unregister_gsi(u32 gsi) |
1da177e4 LT |
593 | { |
594 | iosapic_unregister_intr(gsi); | |
595 | } | |
4be44fcd | 596 | |
1da177e4 | 597 | EXPORT_SYMBOL(acpi_unregister_gsi); |
1da177e4 | 598 | |
4be44fcd | 599 | static int __init acpi_parse_fadt(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
600 | { |
601 | struct acpi_table_header *fadt_header; | |
602 | struct fadt_descriptor_rev2 *fadt; | |
603 | ||
604 | if (!phys_addr || !size) | |
605 | return -EINVAL; | |
606 | ||
4be44fcd | 607 | fadt_header = (struct acpi_table_header *)__va(phys_addr); |
1da177e4 | 608 | if (fadt_header->revision != 3) |
4be44fcd | 609 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
1da177e4 | 610 | |
4be44fcd | 611 | fadt = (struct fadt_descriptor_rev2 *)fadt_header; |
1da177e4 LT |
612 | |
613 | if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER)) | |
614 | acpi_kbd_controller_present = 0; | |
615 | ||
616 | if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES) | |
617 | acpi_legacy_devices = 1; | |
618 | ||
619 | acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); | |
620 | return 0; | |
621 | } | |
622 | ||
4be44fcd | 623 | unsigned long __init acpi_find_rsdp(void) |
1da177e4 LT |
624 | { |
625 | unsigned long rsdp_phys = 0; | |
626 | ||
627 | if (efi.acpi20) | |
628 | rsdp_phys = __pa(efi.acpi20); | |
629 | else if (efi.acpi) | |
4be44fcd LB |
630 | printk(KERN_WARNING PREFIX |
631 | "v1.0/r0.71 tables no longer supported\n"); | |
1da177e4 LT |
632 | return rsdp_phys; |
633 | } | |
634 | ||
4be44fcd | 635 | int __init acpi_boot_init(void) |
1da177e4 LT |
636 | { |
637 | ||
638 | /* | |
639 | * MADT | |
640 | * ---- | |
641 | * Parse the Multiple APIC Description Table (MADT), if exists. | |
642 | * Note that this table provides platform SMP configuration | |
643 | * information -- the successor to MPS tables. | |
644 | */ | |
645 | ||
646 | if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) { | |
647 | printk(KERN_ERR PREFIX "Can't find MADT\n"); | |
648 | goto skip_madt; | |
649 | } | |
650 | ||
651 | /* Local APIC */ | |
652 | ||
4be44fcd LB |
653 | if (acpi_table_parse_madt |
654 | (ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0) | |
655 | printk(KERN_ERR PREFIX | |
656 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 | 657 | |
4be44fcd LB |
658 | if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) |
659 | < 1) | |
660 | printk(KERN_ERR PREFIX | |
661 | "Error parsing MADT - no LAPIC entries\n"); | |
1da177e4 | 662 | |
4be44fcd LB |
663 | if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) |
664 | < 0) | |
1da177e4 LT |
665 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
666 | ||
667 | /* I/O APIC */ | |
668 | ||
4be44fcd LB |
669 | if (acpi_table_parse_madt |
670 | (ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) | |
671 | printk(KERN_ERR PREFIX | |
672 | "Error parsing MADT - no IOSAPIC entries\n"); | |
1da177e4 LT |
673 | |
674 | /* System-Level Interrupt Routing */ | |
675 | ||
4be44fcd LB |
676 | if (acpi_table_parse_madt |
677 | (ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, | |
678 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) | |
679 | printk(KERN_ERR PREFIX | |
680 | "Error parsing platform interrupt source entry\n"); | |
1da177e4 | 681 | |
4be44fcd LB |
682 | if (acpi_table_parse_madt |
683 | (ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0) | |
684 | printk(KERN_ERR PREFIX | |
685 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
686 | |
687 | if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0) | |
688 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
4be44fcd | 689 | skip_madt: |
1da177e4 LT |
690 | |
691 | /* | |
692 | * FADT says whether a legacy keyboard controller is present. | |
693 | * The FADT also contains an SCI_INT line, by which the system | |
694 | * gets interrupts such as power and sleep buttons. If it's not | |
695 | * on a Legacy interrupt, it needs to be setup. | |
696 | */ | |
697 | if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1) | |
698 | printk(KERN_ERR PREFIX "Can't find FADT\n"); | |
699 | ||
700 | #ifdef CONFIG_SMP | |
701 | if (available_cpus == 0) { | |
702 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); | |
703 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); | |
4be44fcd LB |
704 | smp_boot_data.cpu_phys_id[available_cpus] = |
705 | hard_smp_processor_id(); | |
706 | available_cpus = 1; /* We've got at least one of these, no? */ | |
1da177e4 LT |
707 | } |
708 | smp_boot_data.cpu_count = available_cpus; | |
709 | ||
710 | smp_build_cpu_map(); | |
711 | # ifdef CONFIG_ACPI_NUMA | |
712 | if (srat_num_cpus == 0) { | |
713 | int cpu, i = 1; | |
714 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) | |
4be44fcd LB |
715 | if (smp_boot_data.cpu_phys_id[cpu] != |
716 | hard_smp_processor_id()) | |
717 | node_cpuid[i++].phys_id = | |
718 | smp_boot_data.cpu_phys_id[cpu]; | |
1da177e4 | 719 | } |
1da177e4 | 720 | # endif |
8d7e3517 TL |
721 | #endif |
722 | #ifdef CONFIG_ACPI_NUMA | |
723 | build_cpu_to_node_map(); | |
1da177e4 LT |
724 | #endif |
725 | /* Make boot-up look pretty */ | |
4be44fcd LB |
726 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, |
727 | total_cpus); | |
1da177e4 LT |
728 | return 0; |
729 | } | |
730 | ||
4be44fcd | 731 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
1da177e4 LT |
732 | { |
733 | int vector; | |
734 | ||
735 | if (has_8259 && gsi < 16) | |
736 | *irq = isa_irq_to_vector(gsi); | |
737 | else { | |
738 | vector = gsi_to_vector(gsi); | |
739 | if (vector == -1) | |
740 | return -1; | |
741 | ||
742 | *irq = vector; | |
743 | } | |
744 | return 0; | |
745 | } | |
746 | ||
747 | /* | |
748 | * ACPI based hotplug CPU support | |
749 | */ | |
750 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
751 | static | |
4be44fcd | 752 | int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) |
1da177e4 LT |
753 | { |
754 | #ifdef CONFIG_ACPI_NUMA | |
4be44fcd | 755 | int pxm_id; |
1da177e4 LT |
756 | |
757 | pxm_id = acpi_get_pxm(handle); | |
758 | ||
759 | /* | |
760 | * Assuming that the container driver would have set the proximity | |
761 | * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag | |
762 | */ | |
4be44fcd | 763 | node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_nid_map[pxm_id]; |
1da177e4 | 764 | |
4be44fcd | 765 | node_cpuid[cpu].phys_id = physid; |
1da177e4 | 766 | #endif |
4be44fcd | 767 | return (0); |
1da177e4 LT |
768 | } |
769 | ||
4be44fcd | 770 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 771 | { |
4be44fcd | 772 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 LT |
773 | union acpi_object *obj; |
774 | struct acpi_table_lsapic *lsapic; | |
775 | cpumask_t tmp_map; | |
776 | long physid; | |
777 | int cpu; | |
4be44fcd | 778 | |
1da177e4 LT |
779 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
780 | return -EINVAL; | |
781 | ||
4be44fcd | 782 | if (!buffer.length || !buffer.pointer) |
1da177e4 | 783 | return -EINVAL; |
4be44fcd | 784 | |
1da177e4 LT |
785 | obj = buffer.pointer; |
786 | if (obj->type != ACPI_TYPE_BUFFER || | |
787 | obj->buffer.length < sizeof(*lsapic)) { | |
788 | acpi_os_free(buffer.pointer); | |
789 | return -EINVAL; | |
790 | } | |
791 | ||
792 | lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer; | |
793 | ||
794 | if ((lsapic->header.type != ACPI_MADT_LSAPIC) || | |
795 | (!lsapic->flags.enabled)) { | |
796 | acpi_os_free(buffer.pointer); | |
797 | return -EINVAL; | |
798 | } | |
799 | ||
4be44fcd | 800 | physid = ((lsapic->id << 8) | (lsapic->eid)); |
1da177e4 LT |
801 | |
802 | acpi_os_free(buffer.pointer); | |
803 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
804 | buffer.pointer = NULL; | |
805 | ||
806 | cpus_complement(tmp_map, cpu_present_map); | |
807 | cpu = first_cpu(tmp_map); | |
4be44fcd | 808 | if (cpu >= NR_CPUS) |
1da177e4 LT |
809 | return -EINVAL; |
810 | ||
811 | acpi_map_cpu2node(handle, cpu, physid); | |
812 | ||
4be44fcd | 813 | cpu_set(cpu, cpu_present_map); |
1da177e4 LT |
814 | ia64_cpu_to_sapicid[cpu] = physid; |
815 | ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu]; | |
816 | ||
817 | *pcpu = cpu; | |
4be44fcd | 818 | return (0); |
1da177e4 | 819 | } |
1da177e4 | 820 | |
4be44fcd | 821 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 822 | |
4be44fcd | 823 | int acpi_unmap_lsapic(int cpu) |
1da177e4 LT |
824 | { |
825 | int i; | |
826 | ||
4be44fcd LB |
827 | for (i = 0; i < MAX_SAPICS; i++) { |
828 | if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) { | |
829 | ia64_acpiid_to_sapicid[i] = -1; | |
830 | break; | |
831 | } | |
832 | } | |
1da177e4 | 833 | ia64_cpu_to_sapicid[cpu] = -1; |
4be44fcd | 834 | cpu_clear(cpu, cpu_present_map); |
1da177e4 LT |
835 | |
836 | #ifdef CONFIG_ACPI_NUMA | |
837 | /* NUMA specific cleanup's */ | |
838 | #endif | |
839 | ||
4be44fcd | 840 | return (0); |
1da177e4 | 841 | } |
4be44fcd | 842 | |
1da177e4 | 843 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 844 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 LT |
845 | |
846 | #ifdef CONFIG_ACPI_NUMA | |
650316f1 | 847 | static acpi_status __devinit |
4be44fcd | 848 | acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) |
1da177e4 | 849 | { |
4be44fcd | 850 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1da177e4 LT |
851 | union acpi_object *obj; |
852 | struct acpi_table_iosapic *iosapic; | |
853 | unsigned int gsi_base; | |
bb0fc085 | 854 | int pxm, node; |
1da177e4 LT |
855 | |
856 | /* Only care about objects w/ a method that returns the MADT */ | |
857 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
858 | return AE_OK; | |
859 | ||
860 | if (!buffer.length || !buffer.pointer) | |
861 | return AE_OK; | |
862 | ||
863 | obj = buffer.pointer; | |
864 | if (obj->type != ACPI_TYPE_BUFFER || | |
865 | obj->buffer.length < sizeof(*iosapic)) { | |
866 | acpi_os_free(buffer.pointer); | |
867 | return AE_OK; | |
868 | } | |
869 | ||
870 | iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer; | |
871 | ||
872 | if (iosapic->header.type != ACPI_MADT_IOSAPIC) { | |
873 | acpi_os_free(buffer.pointer); | |
874 | return AE_OK; | |
875 | } | |
876 | ||
877 | gsi_base = iosapic->global_irq_base; | |
878 | ||
879 | acpi_os_free(buffer.pointer); | |
1da177e4 LT |
880 | |
881 | /* | |
bb0fc085 | 882 | * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell |
1da177e4 LT |
883 | * us which node to associate this with. |
884 | */ | |
bb0fc085 AW |
885 | pxm = acpi_get_pxm(handle); |
886 | if (pxm < 0) | |
1da177e4 | 887 | return AE_OK; |
1da177e4 | 888 | |
bb0fc085 | 889 | node = pxm_to_nid_map[pxm]; |
1da177e4 LT |
890 | |
891 | if (node >= MAX_NUMNODES || !node_online(node) || | |
892 | cpus_empty(node_to_cpumask(node))) | |
893 | return AE_OK; | |
894 | ||
895 | /* We know a gsi to node mapping! */ | |
896 | map_iosapic_to_node(gsi_base, node); | |
897 | return AE_OK; | |
898 | } | |
650316f1 BH |
899 | |
900 | static int __init | |
901 | acpi_map_iosapics (void) | |
902 | { | |
903 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); | |
904 | return 0; | |
905 | } | |
906 | ||
907 | fs_initcall(acpi_map_iosapics); | |
908 | #endif /* CONFIG_ACPI_NUMA */ | |
b1bb248a | 909 | |
4be44fcd | 910 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a | 911 | { |
0e888adc KK |
912 | int err; |
913 | ||
914 | if ((err = iosapic_init(phys_addr, gsi_base))) | |
915 | return err; | |
916 | ||
24b8e0cc | 917 | #ifdef CONFIG_ACPI_NUMA |
0e888adc | 918 | acpi_map_iosapic(handle, 0, NULL, NULL); |
4be44fcd | 919 | #endif /* CONFIG_ACPI_NUMA */ |
0e888adc KK |
920 | |
921 | return 0; | |
b1bb248a | 922 | } |
4be44fcd | 923 | |
b1bb248a KK |
924 | EXPORT_SYMBOL(acpi_register_ioapic); |
925 | ||
4be44fcd | 926 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a | 927 | { |
0e888adc | 928 | return iosapic_remove(gsi_base); |
b1bb248a | 929 | } |
4be44fcd | 930 | |
b1bb248a KK |
931 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
932 | ||
888ba6c6 | 933 | #endif /* CONFIG_ACPI */ |