2 * acpi.c - Architecture-Specific Low-Level ACPI Support
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>
16 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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
32 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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>
49 #include <asm/iosapic.h>
50 #include <asm/machvec.h>
52 #include <asm/system.h>
55 #include <asm/cyclone.h>
57 #define BAD_MADT_ENTRY(entry, end) ( \
58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
59 ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
61 #define PREFIX "ACPI: "
63 void (*pm_idle) (void);
64 EXPORT_SYMBOL(pm_idle);
65 void (*pm_power_off) (void);
66 EXPORT_SYMBOL(pm_power_off);
68 unsigned char acpi_kbd_controller_present = 1;
69 unsigned char acpi_legacy_devices;
71 static unsigned int __initdata acpi_madt_rev;
73 unsigned int acpi_cpei_override;
74 unsigned int acpi_cpei_phys_cpuid;
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);
82 acpi_get_sysname (void)
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;
90 rsdp_phys = acpi_find_rsdp();
92 printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n");
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");
102 xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
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");
109 if (!strcmp(hdr->oem_id, "HP")) {
112 else if (!strcmp(hdr->oem_id, "SGI")) {
118 # if defined (CONFIG_IA64_HP_SIM)
120 # elif defined (CONFIG_IA64_HP_ZX1)
122 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
123 return "hpzx1_swiotlb";
124 # elif defined (CONFIG_IA64_SGI_SN2)
126 # elif defined (CONFIG_IA64_DIG)
129 # error Unknown platform. Fix acpi.c.
134 #ifdef CONFIG_ACPI_BOOT
136 #define ACPI_MAX_PLATFORM_INTERRUPTS 256
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
143 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
146 * Interrupt routing API for device drivers. Provides interrupt vector for
147 * a generic platform event. Currently only CPEI is implemented.
150 acpi_request_vector (u32 int_type)
154 if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
155 /* corrected platform error interrupt */
156 vector = platform_intr_list[int_type];
158 printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n");
163 __acpi_map_table (unsigned long phys_addr, unsigned long size)
165 return __va(phys_addr);
168 /* --------------------------------------------------------------------------
169 Boot-time Table Parsing
170 -------------------------------------------------------------------------- */
172 static int total_cpus __initdata;
173 static int available_cpus __initdata;
174 struct acpi_table_madt * acpi_madt __initdata;
179 acpi_parse_lapic_addr_ovr (
180 acpi_table_entry_header *header, const unsigned long end)
182 struct acpi_table_lapic_addr_ovr *lapic;
184 lapic = (struct acpi_table_lapic_addr_ovr *) header;
186 if (BAD_MADT_ENTRY(lapic, end))
189 if (lapic->address) {
190 iounmap(ipi_base_addr);
191 ipi_base_addr = ioremap(lapic->address, 0);
198 acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end)
200 struct acpi_table_lsapic *lsapic;
202 lsapic = (struct acpi_table_lsapic *) header;
204 if (BAD_MADT_ENTRY(lsapic, end))
207 if (lsapic->flags.enabled) {
209 smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
211 ia64_acpiid_to_sapicid[lsapic->acpi_id] = (lsapic->id << 8) | lsapic->eid;
221 acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end)
223 struct acpi_table_lapic_nmi *lacpi_nmi;
225 lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
227 if (BAD_MADT_ENTRY(lacpi_nmi, end))
230 /* TBD: Support lapic_nmi entries */
236 acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end)
238 struct acpi_table_iosapic *iosapic;
240 iosapic = (struct acpi_table_iosapic *) header;
242 if (BAD_MADT_ENTRY(iosapic, end))
245 iosapic_init(iosapic->address, iosapic->global_irq_base);
252 acpi_parse_plat_int_src (
253 acpi_table_entry_header *header, const unsigned long end)
255 struct acpi_table_plat_int_src *plintsrc;
258 plintsrc = (struct acpi_table_plat_int_src *) header;
260 if (BAD_MADT_ENTRY(plintsrc, end))
264 * Get vector assignment for this interrupt, set attributes,
265 * and program the IOSAPIC routing table.
267 vector = iosapic_register_platform_intr(plintsrc->type,
268 plintsrc->global_irq,
269 plintsrc->iosapic_vector,
272 (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
273 (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
275 platform_intr_list[plintsrc->type] = vector;
276 if (acpi_madt_rev > 1) {
277 acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag;
281 * Save the physical id, so we can check when its being removed
283 acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
289 unsigned int can_cpei_retarget(void)
291 extern int cpe_vector;
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.
298 if (cpe_vector > 0 && !acpi_cpei_override)
304 unsigned int is_cpu_cpei_target(unsigned int cpu)
306 unsigned int logical_id;
308 logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
310 if (logical_id == cpu)
316 void set_cpei_target_cpu(unsigned int cpu)
318 acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
321 unsigned int get_cpei_target_cpu(void)
323 return acpi_cpei_phys_cpuid;
327 acpi_parse_int_src_ovr (
328 acpi_table_entry_header *header, const unsigned long end)
330 struct acpi_table_int_src_ovr *p;
332 p = (struct acpi_table_int_src_ovr *) header;
334 if (BAD_MADT_ENTRY(p, end))
337 iosapic_override_isa_irq(p->bus_irq, p->global_irq,
338 (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
339 (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
345 acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end)
347 struct acpi_table_nmi_src *nmi_src;
349 nmi_src = (struct acpi_table_nmi_src*) header;
351 if (BAD_MADT_ENTRY(nmi_src, end))
354 /* TBD: Support nimsrc entries */
359 acpi_madt_oem_check (char *oem_id, char *oem_table_id)
361 if (!strncmp(oem_id, "IBM", 3) &&
362 (!strncmp(oem_table_id, "SERMOW", 6))) {
365 * Unfortunately ITC_DRIFT is not yet part of the
366 * official SAL spec, so the ITC_DRIFT bit is not
367 * set by the BIOS on this hardware.
369 sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
376 acpi_parse_madt (unsigned long phys_addr, unsigned long size)
378 if (!phys_addr || !size)
381 acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
383 acpi_madt_rev = acpi_madt->header.revision;
385 /* remember the value for reference after free_initmem() */
386 #ifdef CONFIG_ITANIUM
387 has_8259 = 1; /* Firmware on old Itanium systems is broken */
389 has_8259 = acpi_madt->flags.pcat_compat;
391 iosapic_system_init(has_8259);
393 /* Get base address of IPI Message Block */
395 if (acpi_madt->lapic_address)
396 ipi_base_addr = ioremap(acpi_madt->lapic_address, 0);
398 printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
400 acpi_madt_oem_check(acpi_madt->header.oem_id,
401 acpi_madt->header.oem_table_id);
407 #ifdef CONFIG_ACPI_NUMA
411 #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
413 static int __initdata srat_num_cpus; /* number of cpus */
414 static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
415 #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
416 #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
417 /* maps to convert between proximity domain and logical node ID */
418 int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
419 int __initdata nid_to_pxm_map[MAX_NUMNODES];
420 static struct acpi_table_slit __initdata *slit_table;
423 * ACPI 2.0 SLIT (System Locality Information Table)
424 * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
427 acpi_numa_slit_init (struct acpi_table_slit *slit)
431 len = sizeof(struct acpi_table_header) + 8
432 + slit->localities * slit->localities;
433 if (slit->header.length != len) {
434 printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
435 len, slit->header.length);
436 memset(numa_slit, 10, sizeof(numa_slit));
443 acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa)
445 /* record this node in proximity bitmap */
446 pxm_bit_set(pa->proximity_domain);
448 node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid);
449 /* nid should be overridden as logical node id later */
450 node_cpuid[srat_num_cpus].nid = pa->proximity_domain;
455 acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
457 unsigned long paddr, size;
459 struct node_memblk_s *p, *q, *pend;
461 pxm = ma->proximity_domain;
463 /* fill node memory chunk structure */
464 paddr = ma->base_addr_hi;
465 paddr = (paddr << 32) | ma->base_addr_lo;
466 size = ma->length_hi;
467 size = (size << 32) | ma->length_lo;
469 /* Ignore disabled entries */
470 if (!ma->flags.enabled)
473 /* record this node in proximity bitmap */
476 /* Insertion sort based on base address */
477 pend = &node_memblk[num_node_memblks];
478 for (p = &node_memblk[0]; p < pend; p++) {
479 if (paddr < p->start_paddr)
483 for (q = pend - 1; q >= p; q--)
486 p->start_paddr = paddr;
493 acpi_numa_arch_fixup (void)
495 int i, j, node_from, node_to;
497 /* If there's no SRAT, fix the phys_id and mark node 0 online */
498 if (srat_num_cpus == 0) {
500 node_cpuid[0].phys_id = hard_smp_processor_id();
505 * MCD - This can probably be dropped now. No need for pxm ID to node ID
506 * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
508 /* calculate total number of nodes in system from PXM bitmap */
509 memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
510 memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
511 nodes_clear(node_online_map);
512 for (i = 0; i < MAX_PXM_DOMAINS; i++) {
513 if (pxm_bit_test(i)) {
514 int nid = num_online_nodes();
515 pxm_to_nid_map[i] = nid;
516 nid_to_pxm_map[nid] = i;
517 node_set_online(nid);
521 /* set logical node id in memory chunk structure */
522 for (i = 0; i < num_node_memblks; i++)
523 node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
525 /* assign memory bank numbers for each chunk on each node */
526 for_each_online_node(i) {
530 for (j = 0; j < num_node_memblks; j++)
531 if (node_memblk[j].nid == i)
532 node_memblk[j].bank = bank++;
535 /* set logical node id in cpu structure */
536 for (i = 0; i < srat_num_cpus; i++)
537 node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
539 printk(KERN_INFO "Number of logical nodes in system = %d\n", num_online_nodes());
540 printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks);
542 if (!slit_table) return;
543 memset(numa_slit, -1, sizeof(numa_slit));
544 for (i=0; i<slit_table->localities; i++) {
545 if (!pxm_bit_test(i))
547 node_from = pxm_to_nid_map[i];
548 for (j=0; j<slit_table->localities; j++) {
549 if (!pxm_bit_test(j))
551 node_to = pxm_to_nid_map[j];
552 node_distance(node_from, node_to) =
553 slit_table->entry[i*slit_table->localities + j];
558 printk("ACPI 2.0 SLIT locality table:\n");
559 for_each_online_node(i) {
560 for_each_online_node(j)
561 printk("%03d ", node_distance(i,j));
566 #endif /* CONFIG_ACPI_NUMA */
569 acpi_register_gsi (u32 gsi, int edge_level, int active_high_low)
571 if (has_8259 && gsi < 16)
572 return isa_irq_to_vector(gsi);
574 return iosapic_register_intr(gsi,
575 (active_high_low == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
576 (edge_level == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
578 EXPORT_SYMBOL(acpi_register_gsi);
580 #ifdef CONFIG_ACPI_DEALLOCATE_IRQ
582 acpi_unregister_gsi (u32 gsi)
584 iosapic_unregister_intr(gsi);
586 EXPORT_SYMBOL(acpi_unregister_gsi);
587 #endif /* CONFIG_ACPI_DEALLOCATE_IRQ */
590 acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
592 struct acpi_table_header *fadt_header;
593 struct fadt_descriptor_rev2 *fadt;
595 if (!phys_addr || !size)
598 fadt_header = (struct acpi_table_header *) __va(phys_addr);
599 if (fadt_header->revision != 3)
600 return -ENODEV; /* Only deal with ACPI 2.0 FADT */
602 fadt = (struct fadt_descriptor_rev2 *) fadt_header;
604 if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
605 acpi_kbd_controller_present = 0;
607 if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES)
608 acpi_legacy_devices = 1;
610 acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
616 acpi_find_rsdp (void)
618 unsigned long rsdp_phys = 0;
621 rsdp_phys = __pa(efi.acpi20);
623 printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n");
629 acpi_boot_init (void)
635 * Parse the Multiple APIC Description Table (MADT), if exists.
636 * Note that this table provides platform SMP configuration
637 * information -- the successor to MPS tables.
640 if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) {
641 printk(KERN_ERR PREFIX "Can't find MADT\n");
647 if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0)
648 printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
650 if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) < 1)
651 printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n");
653 if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) < 0)
654 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
658 if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1)
659 printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n");
661 /* System-Level Interrupt Routing */
663 if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
664 printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n");
666 if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0)
667 printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
669 if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0)
670 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
674 * FADT says whether a legacy keyboard controller is present.
675 * The FADT also contains an SCI_INT line, by which the system
676 * gets interrupts such as power and sleep buttons. If it's not
677 * on a Legacy interrupt, it needs to be setup.
679 if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1)
680 printk(KERN_ERR PREFIX "Can't find FADT\n");
683 if (available_cpus == 0) {
684 printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
685 printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
686 smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id();
687 available_cpus = 1; /* We've got at least one of these, no? */
689 smp_boot_data.cpu_count = available_cpus;
692 # ifdef CONFIG_ACPI_NUMA
693 if (srat_num_cpus == 0) {
695 for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
696 if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
697 node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
699 build_cpu_to_node_map();
702 /* Make boot-up look pretty */
703 printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
708 acpi_gsi_to_irq (u32 gsi, unsigned int *irq)
712 if (has_8259 && gsi < 16)
713 *irq = isa_irq_to_vector(gsi);
715 vector = gsi_to_vector(gsi);
725 * ACPI based hotplug CPU support
727 #ifdef CONFIG_ACPI_HOTPLUG_CPU
730 acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
732 #ifdef CONFIG_ACPI_NUMA
735 pxm_id = acpi_get_pxm(handle);
738 * Assuming that the container driver would have set the proximity
739 * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
741 node_cpuid[cpu].nid = (pxm_id < 0) ? 0:
742 pxm_to_nid_map[pxm_id];
744 node_cpuid[cpu].phys_id = physid;
751 acpi_map_lsapic(acpi_handle handle, int *pcpu)
753 struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
754 union acpi_object *obj;
755 struct acpi_table_lsapic *lsapic;
760 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
763 if (!buffer.length || !buffer.pointer)
766 obj = buffer.pointer;
767 if (obj->type != ACPI_TYPE_BUFFER ||
768 obj->buffer.length < sizeof(*lsapic)) {
769 acpi_os_free(buffer.pointer);
773 lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer;
775 if ((lsapic->header.type != ACPI_MADT_LSAPIC) ||
776 (!lsapic->flags.enabled)) {
777 acpi_os_free(buffer.pointer);
781 physid = ((lsapic->id <<8) | (lsapic->eid));
783 acpi_os_free(buffer.pointer);
784 buffer.length = ACPI_ALLOCATE_BUFFER;
785 buffer.pointer = NULL;
787 cpus_complement(tmp_map, cpu_present_map);
788 cpu = first_cpu(tmp_map);
792 acpi_map_cpu2node(handle, cpu, physid);
794 cpu_set(cpu, cpu_present_map);
795 ia64_cpu_to_sapicid[cpu] = physid;
796 ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu];
801 EXPORT_SYMBOL(acpi_map_lsapic);
805 acpi_unmap_lsapic(int cpu)
809 for (i=0; i<MAX_SAPICS; i++) {
810 if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) {
811 ia64_acpiid_to_sapicid[i] = -1;
815 ia64_cpu_to_sapicid[cpu] = -1;
816 cpu_clear(cpu,cpu_present_map);
818 #ifdef CONFIG_ACPI_NUMA
819 /* NUMA specific cleanup's */
824 EXPORT_SYMBOL(acpi_unmap_lsapic);
825 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
828 #ifdef CONFIG_ACPI_NUMA
830 acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
832 struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
833 union acpi_object *obj;
834 struct acpi_table_iosapic *iosapic;
835 unsigned int gsi_base;
838 /* Only care about objects w/ a method that returns the MADT */
839 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
842 if (!buffer.length || !buffer.pointer)
845 obj = buffer.pointer;
846 if (obj->type != ACPI_TYPE_BUFFER ||
847 obj->buffer.length < sizeof(*iosapic)) {
848 acpi_os_free(buffer.pointer);
852 iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer;
854 if (iosapic->header.type != ACPI_MADT_IOSAPIC) {
855 acpi_os_free(buffer.pointer);
859 gsi_base = iosapic->global_irq_base;
861 acpi_os_free(buffer.pointer);
864 * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell
865 * us which node to associate this with.
867 pxm = acpi_get_pxm(handle);
871 node = pxm_to_nid_map[pxm];
873 if (node >= MAX_NUMNODES || !node_online(node) ||
874 cpus_empty(node_to_cpumask(node)))
877 /* We know a gsi to node mapping! */
878 map_iosapic_to_node(gsi_base, node);
881 #endif /* CONFIG_NUMA */
882 #endif /* CONFIG_ACPI_BOOT */