[IA64] Minor cleanups - remove CONFIG_ACPI_DEALLOCATE_IRQ
[linux-3.10.git] / arch / ia64 / kernel / acpi.c
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>
14  *  Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
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
71 static unsigned int __initdata acpi_madt_rev;
72
73 unsigned int acpi_cpei_override;
74 unsigned int acpi_cpei_phys_cpuid;
75
76 #define MAX_SAPICS 256
77 u16 ia64_acpiid_to_sapicid[MAX_SAPICS] =
78         { [0 ... MAX_SAPICS - 1] = -1 };
79 EXPORT_SYMBOL(ia64_acpiid_to_sapicid);
80
81 const char *
82 acpi_get_sysname (void)
83 {
84 #ifdef CONFIG_IA64_GENERIC
85         unsigned long rsdp_phys;
86         struct acpi20_table_rsdp *rsdp;
87         struct acpi_table_xsdt *xsdt;
88         struct acpi_table_header *hdr;
89
90         rsdp_phys = acpi_find_rsdp();
91         if (!rsdp_phys) {
92                 printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n");
93                 return "dig";
94         }
95
96         rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys);
97         if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) {
98                 printk(KERN_ERR "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
99                 return "dig";
100         }
101
102         xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
103         hdr = &xsdt->header;
104         if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) {
105                 printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
106                 return "dig";
107         }
108
109         if (!strcmp(hdr->oem_id, "HP")) {
110                 return "hpzx1";
111         }
112         else if (!strcmp(hdr->oem_id, "SGI")) {
113                 return "sn2";
114         }
115
116         return "dig";
117 #else
118 # if defined (CONFIG_IA64_HP_SIM)
119         return "hpsim";
120 # elif defined (CONFIG_IA64_HP_ZX1)
121         return "hpzx1";
122 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
123         return "hpzx1_swiotlb";
124 # elif defined (CONFIG_IA64_SGI_SN2)
125         return "sn2";
126 # elif defined (CONFIG_IA64_DIG)
127         return "dig";
128 # else
129 #       error Unknown platform.  Fix acpi.c.
130 # endif
131 #endif
132 }
133
134 #ifdef CONFIG_ACPI_BOOT
135
136 #define ACPI_MAX_PLATFORM_INTERRUPTS    256
137
138 /* Array to record platform interrupt vectors for generic interrupt routing. */
139 int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
140         [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
141 };
142
143 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
144
145 /*
146  * Interrupt routing API for device drivers.  Provides interrupt vector for
147  * a generic platform event.  Currently only CPEI is implemented.
148  */
149 int
150 acpi_request_vector (u32 int_type)
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
158                 printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n");
159         return vector;
160 }
161
162 char *
163 __acpi_map_table (unsigned long phys_addr, unsigned long size)
164 {
165         return __va(phys_addr);
166 }
167
168 /* --------------------------------------------------------------------------
169                             Boot-time Table Parsing
170    -------------------------------------------------------------------------- */
171
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;
176
177
178 static int __init
179 acpi_parse_lapic_addr_ovr (
180         acpi_table_entry_header *header, const unsigned long end)
181 {
182         struct acpi_table_lapic_addr_ovr *lapic;
183
184         lapic = (struct acpi_table_lapic_addr_ovr *) header;
185
186         if (BAD_MADT_ENTRY(lapic, end))
187                 return -EINVAL;
188
189         if (lapic->address) {
190                 iounmap(ipi_base_addr);
191                 ipi_base_addr = ioremap(lapic->address, 0);
192         }
193         return 0;
194 }
195
196
197 static int __init
198 acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end)
199 {
200         struct acpi_table_lsapic *lsapic;
201
202         lsapic = (struct acpi_table_lsapic *) header;
203
204         if (BAD_MADT_ENTRY(lsapic, end))
205                 return -EINVAL;
206
207         if (lsapic->flags.enabled) {
208 #ifdef CONFIG_SMP
209                 smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
210 #endif
211                 ia64_acpiid_to_sapicid[lsapic->acpi_id] = (lsapic->id << 8) | lsapic->eid;
212                 ++available_cpus;
213         }
214
215         total_cpus++;
216         return 0;
217 }
218
219
220 static int __init
221 acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end)
222 {
223         struct acpi_table_lapic_nmi *lacpi_nmi;
224
225         lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
226
227         if (BAD_MADT_ENTRY(lacpi_nmi, end))
228                 return -EINVAL;
229
230         /* TBD: Support lapic_nmi entries */
231         return 0;
232 }
233
234
235 static int __init
236 acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end)
237 {
238         struct acpi_table_iosapic *iosapic;
239
240         iosapic = (struct acpi_table_iosapic *) header;
241
242         if (BAD_MADT_ENTRY(iosapic, end))
243                 return -EINVAL;
244
245         return iosapic_init(iosapic->address, iosapic->global_irq_base);
246 }
247
248
249 static int __init
250 acpi_parse_plat_int_src (
251         acpi_table_entry_header *header, const unsigned long end)
252 {
253         struct acpi_table_plat_int_src *plintsrc;
254         int vector;
255
256         plintsrc = (struct acpi_table_plat_int_src *) header;
257
258         if (BAD_MADT_ENTRY(plintsrc, end))
259                 return -EINVAL;
260
261         /*
262          * Get vector assignment for this interrupt, set attributes,
263          * and program the IOSAPIC routing table.
264          */
265         vector = iosapic_register_platform_intr(plintsrc->type,
266                                                 plintsrc->global_irq,
267                                                 plintsrc->iosapic_vector,
268                                                 plintsrc->eid,
269                                                 plintsrc->id,
270                                                 (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
271                                                 (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
272
273         platform_intr_list[plintsrc->type] = vector;
274         if (acpi_madt_rev > 1) {
275                 acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag;
276         }
277
278         /*
279          * Save the physical id, so we can check when its being removed
280          */
281         acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
282
283         return 0;
284 }
285
286
287 unsigned int can_cpei_retarget(void)
288 {
289         extern int cpe_vector;
290
291         /*
292          * Only if CPEI is supported and the override flag
293          * is present, otherwise return that its re-targettable
294          * if we are in polling mode.
295          */
296         if (cpe_vector > 0 && !acpi_cpei_override)
297                 return 0;
298         else
299                 return 1;
300 }
301
302 unsigned int is_cpu_cpei_target(unsigned int cpu)
303 {
304         unsigned int logical_id;
305
306         logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
307
308         if (logical_id == cpu)
309                 return 1;
310         else
311                 return 0;
312 }
313
314 void set_cpei_target_cpu(unsigned int cpu)
315 {
316         acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
317 }
318
319 unsigned int get_cpei_target_cpu(void)
320 {
321         return acpi_cpei_phys_cpuid;
322 }
323
324 static int __init
325 acpi_parse_int_src_ovr (
326         acpi_table_entry_header *header, const unsigned long end)
327 {
328         struct acpi_table_int_src_ovr *p;
329
330         p = (struct acpi_table_int_src_ovr *) header;
331
332         if (BAD_MADT_ENTRY(p, end))
333                 return -EINVAL;
334
335         iosapic_override_isa_irq(p->bus_irq, p->global_irq,
336                                  (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
337                                  (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
338         return 0;
339 }
340
341
342 static int __init
343 acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end)
344 {
345         struct acpi_table_nmi_src *nmi_src;
346
347         nmi_src = (struct acpi_table_nmi_src*) header;
348
349         if (BAD_MADT_ENTRY(nmi_src, end))
350                 return -EINVAL;
351
352         /* TBD: Support nimsrc entries */
353         return 0;
354 }
355
356 static void __init
357 acpi_madt_oem_check (char *oem_id, char *oem_table_id)
358 {
359         if (!strncmp(oem_id, "IBM", 3) &&
360             (!strncmp(oem_table_id, "SERMOW", 6))) {
361
362                 /*
363                  * Unfortunately ITC_DRIFT is not yet part of the
364                  * official SAL spec, so the ITC_DRIFT bit is not
365                  * set by the BIOS on this hardware.
366                  */
367                 sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
368
369                 cyclone_setup();
370         }
371 }
372
373 static int __init
374 acpi_parse_madt (unsigned long phys_addr, unsigned long size)
375 {
376         if (!phys_addr || !size)
377                 return -EINVAL;
378
379         acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
380
381         acpi_madt_rev = acpi_madt->header.revision;
382
383         /* remember the value for reference after free_initmem() */
384 #ifdef CONFIG_ITANIUM
385         has_8259 = 1; /* Firmware on old Itanium systems is broken */
386 #else
387         has_8259 = acpi_madt->flags.pcat_compat;
388 #endif
389         iosapic_system_init(has_8259);
390
391         /* Get base address of IPI Message Block */
392
393         if (acpi_madt->lapic_address)
394                 ipi_base_addr = ioremap(acpi_madt->lapic_address, 0);
395
396         printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
397
398         acpi_madt_oem_check(acpi_madt->header.oem_id,
399                 acpi_madt->header.oem_table_id);
400
401         return 0;
402 }
403
404
405 #ifdef CONFIG_ACPI_NUMA
406
407 #undef SLIT_DEBUG
408
409 #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
410
411 static int __initdata srat_num_cpus;                    /* number of cpus */
412 static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
413 #define pxm_bit_set(bit)        (set_bit(bit,(void *)pxm_flag))
414 #define pxm_bit_test(bit)       (test_bit(bit,(void *)pxm_flag))
415 /* maps to convert between proximity domain and logical node ID */
416 int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
417 int __initdata nid_to_pxm_map[MAX_NUMNODES];
418 static struct acpi_table_slit __initdata *slit_table;
419
420 /*
421  * ACPI 2.0 SLIT (System Locality Information Table)
422  * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
423  */
424 void __init
425 acpi_numa_slit_init (struct acpi_table_slit *slit)
426 {
427         u32 len;
428
429         len = sizeof(struct acpi_table_header) + 8
430                 + slit->localities * slit->localities;
431         if (slit->header.length != len) {
432                 printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
433                        len, slit->header.length);
434                 memset(numa_slit, 10, sizeof(numa_slit));
435                 return;
436         }
437         slit_table = slit;
438 }
439
440 void __init
441 acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa)
442 {
443         /* record this node in proximity bitmap */
444         pxm_bit_set(pa->proximity_domain);
445
446         node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid);
447         /* nid should be overridden as logical node id later */
448         node_cpuid[srat_num_cpus].nid = pa->proximity_domain;
449         srat_num_cpus++;
450 }
451
452 void __init
453 acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
454 {
455         unsigned long paddr, size;
456         u8 pxm;
457         struct node_memblk_s *p, *q, *pend;
458
459         pxm = ma->proximity_domain;
460
461         /* fill node memory chunk structure */
462         paddr = ma->base_addr_hi;
463         paddr = (paddr << 32) | ma->base_addr_lo;
464         size = ma->length_hi;
465         size = (size << 32) | ma->length_lo;
466
467         /* Ignore disabled entries */
468         if (!ma->flags.enabled)
469                 return;
470
471         /* record this node in proximity bitmap */
472         pxm_bit_set(pxm);
473
474         /* Insertion sort based on base address */
475         pend = &node_memblk[num_node_memblks];
476         for (p = &node_memblk[0]; p < pend; p++) {
477                 if (paddr < p->start_paddr)
478                         break;
479         }
480         if (p < pend) {
481                 for (q = pend - 1; q >= p; q--)
482                         *(q + 1) = *q;
483         }
484         p->start_paddr = paddr;
485         p->size = size;
486         p->nid = pxm;
487         num_node_memblks++;
488 }
489
490 void __init
491 acpi_numa_arch_fixup (void)
492 {
493         int i, j, node_from, node_to;
494
495         /* If there's no SRAT, fix the phys_id and mark node 0 online */
496         if (srat_num_cpus == 0) {
497                 node_set_online(0);
498                 node_cpuid[0].phys_id = hard_smp_processor_id();
499                 return;
500         }
501
502         /*
503          * MCD - This can probably be dropped now.  No need for pxm ID to node ID
504          * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
505          */
506         /* calculate total number of nodes in system from PXM bitmap */
507         memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
508         memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
509         nodes_clear(node_online_map);
510         for (i = 0; i < MAX_PXM_DOMAINS; i++) {
511                 if (pxm_bit_test(i)) {
512                         int nid = num_online_nodes();
513                         pxm_to_nid_map[i] = nid;
514                         nid_to_pxm_map[nid] = i;
515                         node_set_online(nid);
516                 }
517         }
518
519         /* set logical node id in memory chunk structure */
520         for (i = 0; i < num_node_memblks; i++)
521                 node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
522
523         /* assign memory bank numbers for each chunk on each node */
524         for_each_online_node(i) {
525                 int bank;
526
527                 bank = 0;
528                 for (j = 0; j < num_node_memblks; j++)
529                         if (node_memblk[j].nid == i)
530                                 node_memblk[j].bank = bank++;
531         }
532
533         /* set logical node id in cpu structure */
534         for (i = 0; i < srat_num_cpus; i++)
535                 node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
536
537         printk(KERN_INFO "Number of logical nodes in system = %d\n", num_online_nodes());
538         printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks);
539
540         if (!slit_table) return;
541         memset(numa_slit, -1, sizeof(numa_slit));
542         for (i=0; i<slit_table->localities; i++) {
543                 if (!pxm_bit_test(i))
544                         continue;
545                 node_from = pxm_to_nid_map[i];
546                 for (j=0; j<slit_table->localities; j++) {
547                         if (!pxm_bit_test(j))
548                                 continue;
549                         node_to = pxm_to_nid_map[j];
550                         node_distance(node_from, node_to) =
551                                 slit_table->entry[i*slit_table->localities + j];
552                 }
553         }
554
555 #ifdef SLIT_DEBUG
556         printk("ACPI 2.0 SLIT locality table:\n");
557         for_each_online_node(i) {
558                 for_each_online_node(j)
559                         printk("%03d ", node_distance(i,j));
560                 printk("\n");
561         }
562 #endif
563 }
564 #endif /* CONFIG_ACPI_NUMA */
565
566 unsigned int
567 acpi_register_gsi (u32 gsi, int edge_level, int active_high_low)
568 {
569         if (has_8259 && gsi < 16)
570                 return isa_irq_to_vector(gsi);
571
572         return iosapic_register_intr(gsi,
573                         (active_high_low == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
574                         (edge_level == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
575 }
576 EXPORT_SYMBOL(acpi_register_gsi);
577
578 void
579 acpi_unregister_gsi (u32 gsi)
580 {
581         iosapic_unregister_intr(gsi);
582 }
583 EXPORT_SYMBOL(acpi_unregister_gsi);
584
585 static int __init
586 acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
587 {
588         struct acpi_table_header *fadt_header;
589         struct fadt_descriptor_rev2 *fadt;
590
591         if (!phys_addr || !size)
592                 return -EINVAL;
593
594         fadt_header = (struct acpi_table_header *) __va(phys_addr);
595         if (fadt_header->revision != 3)
596                 return -ENODEV;         /* Only deal with ACPI 2.0 FADT */
597
598         fadt = (struct fadt_descriptor_rev2 *) fadt_header;
599
600         if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
601                 acpi_kbd_controller_present = 0;
602
603         if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES)
604                 acpi_legacy_devices = 1;
605
606         acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
607         return 0;
608 }
609
610
611 unsigned long __init
612 acpi_find_rsdp (void)
613 {
614         unsigned long rsdp_phys = 0;
615
616         if (efi.acpi20)
617                 rsdp_phys = __pa(efi.acpi20);
618         else if (efi.acpi)
619                 printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n");
620         return rsdp_phys;
621 }
622
623
624 int __init
625 acpi_boot_init (void)
626 {
627
628         /*
629          * MADT
630          * ----
631          * Parse the Multiple APIC Description Table (MADT), if exists.
632          * Note that this table provides platform SMP configuration
633          * information -- the successor to MPS tables.
634          */
635
636         if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) {
637                 printk(KERN_ERR PREFIX "Can't find MADT\n");
638                 goto skip_madt;
639         }
640
641         /* Local APIC */
642
643         if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0)
644                 printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
645
646         if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) < 1)
647                 printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n");
648
649         if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) < 0)
650                 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
651
652         /* I/O APIC */
653
654         if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1)
655                 printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n");
656
657         /* System-Level Interrupt Routing */
658
659         if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
660                 printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n");
661
662         if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0)
663                 printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
664
665         if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0)
666                 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
667   skip_madt:
668
669         /*
670          * FADT says whether a legacy keyboard controller is present.
671          * The FADT also contains an SCI_INT line, by which the system
672          * gets interrupts such as power and sleep buttons.  If it's not
673          * on a Legacy interrupt, it needs to be setup.
674          */
675         if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1)
676                 printk(KERN_ERR PREFIX "Can't find FADT\n");
677
678 #ifdef CONFIG_SMP
679         if (available_cpus == 0) {
680                 printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
681                 printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
682                 smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id();
683                 available_cpus = 1; /* We've got at least one of these, no? */
684         }
685         smp_boot_data.cpu_count = available_cpus;
686
687         smp_build_cpu_map();
688 # ifdef CONFIG_ACPI_NUMA
689         if (srat_num_cpus == 0) {
690                 int cpu, i = 1;
691                 for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
692                         if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
693                                 node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
694         }
695 # endif
696 #endif
697 #ifdef CONFIG_ACPI_NUMA
698         build_cpu_to_node_map();
699 #endif
700         /* Make boot-up look pretty */
701         printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
702         return 0;
703 }
704
705 int
706 acpi_gsi_to_irq (u32 gsi, unsigned int *irq)
707 {
708         int vector;
709
710         if (has_8259 && gsi < 16)
711                 *irq = isa_irq_to_vector(gsi);
712         else {
713                 vector = gsi_to_vector(gsi);
714                 if (vector == -1)
715                         return -1;
716
717                 *irq = vector;
718         }
719         return 0;
720 }
721
722 /*
723  *  ACPI based hotplug CPU support
724  */
725 #ifdef CONFIG_ACPI_HOTPLUG_CPU
726 static
727 int
728 acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
729 {
730 #ifdef CONFIG_ACPI_NUMA
731         int                     pxm_id;
732
733         pxm_id = acpi_get_pxm(handle);
734
735         /*
736          * Assuming that the container driver would have set the proximity
737          * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
738          */
739         node_cpuid[cpu].nid = (pxm_id < 0) ? 0:
740                         pxm_to_nid_map[pxm_id];
741
742         node_cpuid[cpu].phys_id =  physid;
743 #endif
744         return(0);
745 }
746
747
748 int
749 acpi_map_lsapic(acpi_handle handle, int *pcpu)
750 {
751         struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
752         union acpi_object *obj;
753         struct acpi_table_lsapic *lsapic;
754         cpumask_t tmp_map;
755         long physid;
756         int cpu;
757  
758         if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
759                 return -EINVAL;
760
761         if (!buffer.length ||  !buffer.pointer)
762                 return -EINVAL;
763  
764         obj = buffer.pointer;
765         if (obj->type != ACPI_TYPE_BUFFER ||
766             obj->buffer.length < sizeof(*lsapic)) {
767                 acpi_os_free(buffer.pointer);
768                 return -EINVAL;
769         }
770
771         lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer;
772
773         if ((lsapic->header.type != ACPI_MADT_LSAPIC) ||
774             (!lsapic->flags.enabled)) {
775                 acpi_os_free(buffer.pointer);
776                 return -EINVAL;
777         }
778
779         physid = ((lsapic->id <<8) | (lsapic->eid));
780
781         acpi_os_free(buffer.pointer);
782         buffer.length = ACPI_ALLOCATE_BUFFER;
783         buffer.pointer = NULL;
784
785         cpus_complement(tmp_map, cpu_present_map);
786         cpu = first_cpu(tmp_map);
787         if(cpu >= NR_CPUS)
788                 return -EINVAL;
789
790         acpi_map_cpu2node(handle, cpu, physid);
791
792         cpu_set(cpu, cpu_present_map);
793         ia64_cpu_to_sapicid[cpu] = physid;
794         ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu];
795
796         *pcpu = cpu;
797         return(0);
798 }
799 EXPORT_SYMBOL(acpi_map_lsapic);
800
801
802 int
803 acpi_unmap_lsapic(int cpu)
804 {
805         int i;
806
807         for (i=0; i<MAX_SAPICS; i++) {
808                 if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) {
809                         ia64_acpiid_to_sapicid[i] = -1;
810                         break;
811                 }
812         }
813         ia64_cpu_to_sapicid[cpu] = -1;
814         cpu_clear(cpu,cpu_present_map);
815
816 #ifdef CONFIG_ACPI_NUMA
817         /* NUMA specific cleanup's */
818 #endif
819
820         return(0);
821 }
822 EXPORT_SYMBOL(acpi_unmap_lsapic);
823 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
824  
825
826 #ifdef CONFIG_ACPI_NUMA
827 acpi_status __devinit
828 acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
829 {
830         struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
831         union acpi_object *obj;
832         struct acpi_table_iosapic *iosapic;
833         unsigned int gsi_base;
834         int pxm, node;
835
836         /* Only care about objects w/ a method that returns the MADT */
837         if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
838                 return AE_OK;
839
840         if (!buffer.length || !buffer.pointer)
841                 return AE_OK;
842
843         obj = buffer.pointer;
844         if (obj->type != ACPI_TYPE_BUFFER ||
845             obj->buffer.length < sizeof(*iosapic)) {
846                 acpi_os_free(buffer.pointer);
847                 return AE_OK;
848         }
849
850         iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer;
851
852         if (iosapic->header.type != ACPI_MADT_IOSAPIC) {
853                 acpi_os_free(buffer.pointer);
854                 return AE_OK;
855         }
856
857         gsi_base = iosapic->global_irq_base;
858
859         acpi_os_free(buffer.pointer);
860
861         /*
862          * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell
863          * us which node to associate this with.
864          */
865         pxm = acpi_get_pxm(handle);
866         if (pxm < 0)
867                 return AE_OK;
868
869         node = pxm_to_nid_map[pxm];
870
871         if (node >= MAX_NUMNODES || !node_online(node) ||
872             cpus_empty(node_to_cpumask(node)))
873                 return AE_OK;
874
875         /* We know a gsi to node mapping! */
876         map_iosapic_to_node(gsi_base, node);
877         return AE_OK;
878 }
879 #endif /* CONFIG_NUMA */
880
881 int
882 acpi_register_ioapic (acpi_handle handle, u64 phys_addr, u32 gsi_base)
883 {
884         int err;
885
886         if ((err = iosapic_init(phys_addr, gsi_base)))
887                 return err;
888
889 #if CONFIG_ACPI_NUMA
890         acpi_map_iosapic(handle, 0, NULL, NULL);
891 #endif /* CONFIG_ACPI_NUMA */
892
893         return 0;
894 }
895 EXPORT_SYMBOL(acpi_register_ioapic);
896
897 int
898 acpi_unregister_ioapic (acpi_handle handle, u32 gsi_base)
899 {
900         return iosapic_remove(gsi_base);
901 }
902 EXPORT_SYMBOL(acpi_unregister_ioapic);
903
904 #endif /* CONFIG_ACPI_BOOT */