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>
15 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
34 #include <linux/config.h>
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>
47 #include <asm/iosapic.h>
48 #include <asm/machvec.h>
50 #include <asm/system.h>
53 #include <asm/cyclone.h>
56 #define PREFIX "ACPI: "
58 void (*pm_idle) (void);
59 EXPORT_SYMBOL(pm_idle);
60 void (*pm_power_off) (void);
62 unsigned char acpi_kbd_controller_present = 1;
63 unsigned char acpi_legacy_devices;
66 acpi_get_sysname (void)
68 #ifdef CONFIG_IA64_GENERIC
69 unsigned long rsdp_phys;
70 struct acpi20_table_rsdp *rsdp;
71 struct acpi_table_xsdt *xsdt;
72 struct acpi_table_header *hdr;
74 rsdp_phys = acpi_find_rsdp();
76 printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n");
80 rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys);
81 if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) {
82 printk(KERN_ERR "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
86 xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
88 if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) {
89 printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
93 if (!strcmp(hdr->oem_id, "HP")) {
96 else if (!strcmp(hdr->oem_id, "SGI")) {
102 # if defined (CONFIG_IA64_HP_SIM)
104 # elif defined (CONFIG_IA64_HP_ZX1)
106 # elif defined (CONFIG_IA64_SGI_SN2)
108 # elif defined (CONFIG_IA64_DIG)
111 # error Unknown platform. Fix acpi.c.
116 #ifdef CONFIG_ACPI_BOOT
118 #define ACPI_MAX_PLATFORM_INTERRUPTS 256
120 /* Array to record platform interrupt vectors for generic interrupt routing. */
121 int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
122 [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
125 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
128 * Interrupt routing API for device drivers. Provides interrupt vector for
129 * a generic platform event. Currently only CPEI is implemented.
132 acpi_request_vector (u32 int_type)
136 if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
137 /* corrected platform error interrupt */
138 vector = platform_intr_list[int_type];
140 printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n");
145 __acpi_map_table (unsigned long phys_addr, unsigned long size)
147 return __va(phys_addr);
150 /* --------------------------------------------------------------------------
151 Boot-time Table Parsing
152 -------------------------------------------------------------------------- */
154 static int total_cpus __initdata;
155 static int available_cpus __initdata;
156 struct acpi_table_madt * acpi_madt __initdata;
161 acpi_parse_lapic_addr_ovr (acpi_table_entry_header *header)
163 struct acpi_table_lapic_addr_ovr *lapic;
165 lapic = (struct acpi_table_lapic_addr_ovr *) header;
169 acpi_table_print_madt_entry(header);
171 if (lapic->address) {
172 iounmap((void *) ipi_base_addr);
173 ipi_base_addr = (unsigned long) ioremap(lapic->address, 0);
180 acpi_parse_lsapic (acpi_table_entry_header *header)
182 struct acpi_table_lsapic *lsapic;
184 lsapic = (struct acpi_table_lsapic *) header;
188 acpi_table_print_madt_entry(header);
190 printk(KERN_INFO "CPU %d (0x%04x)", total_cpus, (lsapic->id << 8) | lsapic->eid);
192 if (!lsapic->flags.enabled)
197 smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
198 if (hard_smp_processor_id()
199 == (unsigned int) smp_boot_data.cpu_phys_id[available_cpus])
213 acpi_parse_lapic_nmi (acpi_table_entry_header *header)
215 struct acpi_table_lapic_nmi *lacpi_nmi;
217 lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
221 acpi_table_print_madt_entry(header);
223 /* TBD: Support lapic_nmi entries */
229 acpi_parse_iosapic (acpi_table_entry_header *header)
231 struct acpi_table_iosapic *iosapic;
233 iosapic = (struct acpi_table_iosapic *) header;
237 acpi_table_print_madt_entry(header);
239 iosapic_init(iosapic->address, iosapic->global_irq_base);
246 acpi_parse_plat_int_src (acpi_table_entry_header *header)
248 struct acpi_table_plat_int_src *plintsrc;
251 plintsrc = (struct acpi_table_plat_int_src *) header;
255 acpi_table_print_madt_entry(header);
258 * Get vector assignment for this interrupt, set attributes,
259 * and program the IOSAPIC routing table.
261 vector = iosapic_register_platform_intr(plintsrc->type,
262 plintsrc->global_irq,
263 plintsrc->iosapic_vector,
266 (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
267 (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
269 platform_intr_list[plintsrc->type] = vector;
275 acpi_parse_int_src_ovr (acpi_table_entry_header *header)
277 struct acpi_table_int_src_ovr *p;
279 p = (struct acpi_table_int_src_ovr *) header;
283 acpi_table_print_madt_entry(header);
285 iosapic_override_isa_irq(p->bus_irq, p->global_irq,
286 (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
287 (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
293 acpi_parse_nmi_src (acpi_table_entry_header *header)
295 struct acpi_table_nmi_src *nmi_src;
297 nmi_src = (struct acpi_table_nmi_src*) header;
301 acpi_table_print_madt_entry(header);
303 /* TBD: Support nimsrc entries */
307 /* Hook from generic ACPI tables.c */
308 void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
310 if (!strncmp(oem_id, "IBM", 3) &&
311 (!strncmp(oem_table_id, "SERMOW", 6))){
313 /* Unfortunatly ITC_DRIFT is not yet part of the
314 * official SAL spec, so the ITC_DRIFT bit is not
315 * set by the BIOS on this hardware.
317 sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
319 /*Start cyclone clock*/
325 acpi_parse_madt (unsigned long phys_addr, unsigned long size)
327 if (!phys_addr || !size)
330 acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
332 /* remember the value for reference after free_initmem() */
333 #ifdef CONFIG_ITANIUM
334 has_8259 = 1; /* Firmware on old Itanium systems is broken */
336 has_8259 = acpi_madt->flags.pcat_compat;
338 iosapic_system_init(has_8259);
340 /* Get base address of IPI Message Block */
342 if (acpi_madt->lapic_address)
343 ipi_base_addr = (unsigned long) ioremap(acpi_madt->lapic_address, 0);
345 printk(KERN_INFO PREFIX "Local APIC address 0x%lx\n", ipi_base_addr);
347 acpi_madt_oem_check(acpi_madt->header.oem_id,
348 acpi_madt->header.oem_table_id);
354 #ifdef CONFIG_ACPI_NUMA
358 #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
360 static int __initdata srat_num_cpus; /* number of cpus */
361 static u32 __initdata pxm_flag[PXM_FLAG_LEN];
362 #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
363 #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
364 /* maps to convert between proximity domain and logical node ID */
365 int __initdata pxm_to_nid_map[MAX_PXM_DOMAINS];
366 int __initdata nid_to_pxm_map[MAX_NUMNODES];
367 static struct acpi_table_slit __initdata *slit_table;
370 * ACPI 2.0 SLIT (System Locality Information Table)
371 * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
374 acpi_numa_slit_init (struct acpi_table_slit *slit)
378 len = sizeof(struct acpi_table_header) + 8
379 + slit->localities * slit->localities;
380 if (slit->header.length != len) {
381 printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
382 len, slit->header.length);
383 memset(numa_slit, 10, sizeof(numa_slit));
390 acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa)
392 /* record this node in proximity bitmap */
393 pxm_bit_set(pa->proximity_domain);
395 node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid);
396 /* nid should be overridden as logical node id later */
397 node_cpuid[srat_num_cpus].nid = pa->proximity_domain;
402 acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
404 unsigned long paddr, size;
406 struct node_memblk_s *p, *q, *pend;
408 pxm = ma->proximity_domain;
410 /* fill node memory chunk structure */
411 paddr = ma->base_addr_hi;
412 paddr = (paddr << 32) | ma->base_addr_lo;
413 size = ma->length_hi;
414 size = (size << 32) | ma->length_lo;
416 /* Ignore disabled entries */
417 if (!ma->flags.enabled)
420 /* record this node in proximity bitmap */
423 /* Insertion sort based on base address */
424 pend = &node_memblk[num_node_memblks];
425 for (p = &node_memblk[0]; p < pend; p++) {
426 if (paddr < p->start_paddr)
430 for (q = pend - 1; q >= p; q--)
433 p->start_paddr = paddr;
440 acpi_numa_arch_fixup (void)
442 int i, j, node_from, node_to;
444 /* If there's no SRAT, fix the phys_id */
445 if (srat_num_cpus == 0) {
446 node_cpuid[0].phys_id = hard_smp_processor_id();
450 /* calculate total number of nodes in system from PXM bitmap */
451 numnodes = 0; /* init total nodes in system */
453 memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
454 memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
455 for (i = 0; i < MAX_PXM_DOMAINS; i++) {
456 if (pxm_bit_test(i)) {
457 pxm_to_nid_map[i] = numnodes;
458 node_set_online(numnodes);
459 nid_to_pxm_map[numnodes++] = i;
463 /* set logical node id in memory chunk structure */
464 for (i = 0; i < num_node_memblks; i++)
465 node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
467 /* assign memory bank numbers for each chunk on each node */
468 for (i = 0; i < numnodes; i++) {
472 for (j = 0; j < num_node_memblks; j++)
473 if (node_memblk[j].nid == i)
474 node_memblk[j].bank = bank++;
477 /* set logical node id in cpu structure */
478 for (i = 0; i < srat_num_cpus; i++)
479 node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
481 printk(KERN_INFO "Number of logical nodes in system = %d\n", numnodes);
482 printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks);
484 if (!slit_table) return;
485 memset(numa_slit, -1, sizeof(numa_slit));
486 for (i=0; i<slit_table->localities; i++) {
487 if (!pxm_bit_test(i))
489 node_from = pxm_to_nid_map[i];
490 for (j=0; j<slit_table->localities; j++) {
491 if (!pxm_bit_test(j))
493 node_to = pxm_to_nid_map[j];
494 node_distance(node_from, node_to) =
495 slit_table->entry[i*slit_table->localities + j];
500 printk("ACPI 2.0 SLIT locality table:\n");
501 for (i = 0; i < numnodes; i++) {
502 for (j = 0; j < numnodes; j++)
503 printk("%03d ", node_distance(i,j));
508 #endif /* CONFIG_ACPI_NUMA */
511 acpi_register_gsi (u32 gsi, int polarity, int trigger)
513 return acpi_register_irq(gsi, polarity, trigger);
515 EXPORT_SYMBOL(acpi_register_gsi);
518 acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
520 struct acpi_table_header *fadt_header;
521 struct fadt_descriptor_rev2 *fadt;
523 if (!phys_addr || !size)
526 fadt_header = (struct acpi_table_header *) __va(phys_addr);
527 if (fadt_header->revision != 3)
528 return -ENODEV; /* Only deal with ACPI 2.0 FADT */
530 fadt = (struct fadt_descriptor_rev2 *) fadt_header;
532 if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
533 acpi_kbd_controller_present = 0;
535 if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES)
536 acpi_legacy_devices = 1;
538 acpi_register_gsi(fadt->sci_int, ACPI_ACTIVE_LOW, ACPI_LEVEL_SENSITIVE);
544 acpi_find_rsdp (void)
546 unsigned long rsdp_phys = 0;
549 rsdp_phys = __pa(efi.acpi20);
551 printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n");
557 acpi_boot_init (void)
563 * Parse the Multiple APIC Description Table (MADT), if exists.
564 * Note that this table provides platform SMP configuration
565 * information -- the successor to MPS tables.
568 if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) {
569 printk(KERN_ERR PREFIX "Can't find MADT\n");
575 if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0)
576 printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
578 if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) < 1)
579 printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n");
581 if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) < 0)
582 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
586 if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1)
587 printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n");
589 /* System-Level Interrupt Routing */
591 if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
592 printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n");
594 if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0)
595 printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
597 if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0)
598 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
602 * FADT says whether a legacy keyboard controller is present.
603 * The FADT also contains an SCI_INT line, by which the system
604 * gets interrupts such as power and sleep buttons. If it's not
605 * on a Legacy interrupt, it needs to be setup.
607 if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1)
608 printk(KERN_ERR PREFIX "Can't find FADT\n");
611 if (available_cpus == 0) {
612 printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
613 printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
614 smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id();
615 available_cpus = 1; /* We've got at least one of these, no? */
617 smp_boot_data.cpu_count = available_cpus;
620 # ifdef CONFIG_ACPI_NUMA
621 if (srat_num_cpus == 0) {
623 for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
624 if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
625 node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
627 build_cpu_to_node_map();
630 /* Make boot-up look pretty */
631 printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
635 /* deprecated in favor of acpi_gsi_to_irq */
637 acpi_irq_to_vector (u32 gsi)
639 if (has_8259 && gsi < 16)
640 return isa_irq_to_vector(gsi);
642 return gsi_to_vector(gsi);
646 acpi_gsi_to_irq (u32 gsi, unsigned int *irq)
650 if (has_8259 && gsi < 16)
651 *irq = isa_irq_to_vector(gsi);
653 vector = gsi_to_vector(gsi);
663 acpi_register_irq (u32 gsi, u32 polarity, u32 trigger)
665 if (has_8259 && gsi < 16)
666 return isa_irq_to_vector(gsi);
668 return iosapic_register_intr(gsi,
669 (polarity == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
670 (trigger == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
672 EXPORT_SYMBOL(acpi_register_irq);
674 #endif /* CONFIG_ACPI_BOOT */