2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #include <linux/init.h>
27 #include <linux/acpi.h>
28 #include <linux/acpi_pmtmr.h>
29 #include <linux/efi.h>
30 #include <linux/cpumask.h>
31 #include <linux/module.h>
32 #include <linux/dmi.h>
33 #include <linux/irq.h>
34 #include <linux/slab.h>
35 #include <linux/bootmem.h>
36 #include <linux/ioport.h>
37 #include <linux/pci.h>
39 #include <asm/pci_x86.h>
40 #include <asm/pgtable.h>
41 #include <asm/io_apic.h>
44 #include <asm/mpspec.h>
47 #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
48 static int __initdata acpi_force = 0;
50 EXPORT_SYMBOL(acpi_disabled);
53 # include <asm/proto.h>
56 #define PREFIX "ACPI: "
58 int acpi_noirq; /* skip ACPI IRQ initialization */
59 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
60 EXPORT_SYMBOL(acpi_pci_disabled);
65 int acpi_disable_cmcff;
67 u8 acpi_sci_flags __initdata;
68 int acpi_sci_override_gsi __initdata;
69 int acpi_skip_timer_override __initdata;
70 int acpi_use_timer_override __initdata;
71 int acpi_fix_pin2_polarity __initdata;
73 #ifdef CONFIG_X86_LOCAL_APIC
74 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
77 /* --------------------------------------------------------------------------
78 Boot-time Configuration
79 -------------------------------------------------------------------------- */
82 * The default interrupt routing model is PIC (8259). This gets
83 * overridden if IOAPICs are enumerated (below).
85 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
89 * ISA irqs by default are the first 16 gsis but can be
90 * any gsi as specified by an interrupt source override.
92 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
93 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
96 static unsigned int gsi_to_irq(unsigned int gsi)
98 unsigned int irq = gsi + NR_IRQS_LEGACY;
101 for (i = 0; i < NR_IRQS_LEGACY; i++) {
102 if (isa_irq_to_gsi[i] == gsi) {
107 /* Provide an identity mapping of gsi == irq
108 * except on truly weird platforms that have
109 * non isa irqs in the first 16 gsis.
111 if (gsi >= NR_IRQS_LEGACY)
119 static u32 irq_to_gsi(int irq)
123 if (irq < NR_IRQS_LEGACY)
124 gsi = isa_irq_to_gsi[irq];
125 else if (irq < gsi_top)
127 else if (irq < (gsi_top + NR_IRQS_LEGACY))
136 * This is just a simple wrapper around early_ioremap(),
137 * with sanity checks for phys == 0 and size == 0.
139 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
145 return early_ioremap(phys, size);
148 void __init __acpi_unmap_table(char *map, unsigned long size)
153 early_iounmap(map, size);
156 #ifdef CONFIG_X86_LOCAL_APIC
157 static int __init acpi_parse_madt(struct acpi_table_header *table)
159 struct acpi_table_madt *madt = NULL;
164 madt = (struct acpi_table_madt *)table;
166 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
171 acpi_lapic_addr = (u64) madt->address;
173 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
177 default_acpi_madt_oem_check(madt->header.oem_id,
178 madt->header.oem_table_id);
184 * acpi_register_lapic - register a local apic and generates a logic cpu number
185 * @id: local apic id to register
186 * @enabled: this cpu is enabled or not
188 * Returns the logic cpu number which maps to the local apic
190 static int acpi_register_lapic(int id, u8 enabled)
192 unsigned int ver = 0;
194 if (id >= MAX_LOCAL_APIC) {
195 printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
204 if (boot_cpu_physical_apicid != -1U)
205 ver = apic_version[boot_cpu_physical_apicid];
207 return generic_processor_info(id, ver);
211 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
213 struct acpi_madt_local_x2apic *processor = NULL;
217 processor = (struct acpi_madt_local_x2apic *)header;
219 if (BAD_MADT_ENTRY(processor, end))
222 acpi_table_print_madt_entry(header);
224 apic_id = processor->local_apic_id;
225 enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
226 #ifdef CONFIG_X86_X2APIC
228 * We need to register disabled CPU as well to permit
229 * counting disabled CPUs. This allows us to size
230 * cpus_possible_map more accurately, to permit
231 * to not preallocating memory for all NR_CPUS
232 * when we use CPU hotplug.
234 if (!apic->apic_id_valid(apic_id) && enabled)
235 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
237 acpi_register_lapic(apic_id, enabled);
239 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
246 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
248 struct acpi_madt_local_apic *processor = NULL;
250 processor = (struct acpi_madt_local_apic *)header;
252 if (BAD_MADT_ENTRY(processor, end))
255 acpi_table_print_madt_entry(header);
258 * We need to register disabled CPU as well to permit
259 * counting disabled CPUs. This allows us to size
260 * cpus_possible_map more accurately, to permit
261 * to not preallocating memory for all NR_CPUS
262 * when we use CPU hotplug.
264 acpi_register_lapic(processor->id, /* APIC ID */
265 processor->lapic_flags & ACPI_MADT_ENABLED);
271 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
273 struct acpi_madt_local_sapic *processor = NULL;
275 processor = (struct acpi_madt_local_sapic *)header;
277 if (BAD_MADT_ENTRY(processor, end))
280 acpi_table_print_madt_entry(header);
282 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
283 processor->lapic_flags & ACPI_MADT_ENABLED);
289 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
290 const unsigned long end)
292 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
294 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
296 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
299 acpi_lapic_addr = lapic_addr_ovr->address;
305 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
306 const unsigned long end)
308 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
310 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
312 if (BAD_MADT_ENTRY(x2apic_nmi, end))
315 acpi_table_print_madt_entry(header);
317 if (x2apic_nmi->lint != 1)
318 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
324 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
326 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
328 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
330 if (BAD_MADT_ENTRY(lapic_nmi, end))
333 acpi_table_print_madt_entry(header);
335 if (lapic_nmi->lint != 1)
336 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
341 #endif /*CONFIG_X86_LOCAL_APIC */
343 #ifdef CONFIG_X86_IO_APIC
346 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
348 struct acpi_madt_io_apic *ioapic = NULL;
350 ioapic = (struct acpi_madt_io_apic *)header;
352 if (BAD_MADT_ENTRY(ioapic, end))
355 acpi_table_print_madt_entry(header);
357 mp_register_ioapic(ioapic->id,
358 ioapic->address, ioapic->global_irq_base);
364 * Parse Interrupt Source Override for the ACPI SCI
366 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
368 if (trigger == 0) /* compatible SCI trigger is level */
371 if (polarity == 0) /* compatible SCI polarity is low */
374 /* Command-line over-ride via acpi_sci= */
375 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
376 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
378 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
379 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
382 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
383 * If GSI is < 16, this will update its flags,
384 * else it will create a new mp_irqs[] entry.
386 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
389 * stash over-ride to indicate we've been here
390 * and for later update of acpi_gbl_FADT
392 acpi_sci_override_gsi = gsi;
397 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
398 const unsigned long end)
400 struct acpi_madt_interrupt_override *intsrc = NULL;
402 intsrc = (struct acpi_madt_interrupt_override *)header;
404 if (BAD_MADT_ENTRY(intsrc, end))
407 acpi_table_print_madt_entry(header);
409 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
410 acpi_sci_ioapic_setup(intsrc->source_irq,
411 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
412 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
417 if (intsrc->source_irq == 0) {
418 if (acpi_skip_timer_override) {
419 printk(PREFIX "BIOS IRQ0 override ignored.\n");
423 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
424 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
425 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
426 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
430 mp_override_legacy_irq(intsrc->source_irq,
431 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
432 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
439 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
441 struct acpi_madt_nmi_source *nmi_src = NULL;
443 nmi_src = (struct acpi_madt_nmi_source *)header;
445 if (BAD_MADT_ENTRY(nmi_src, end))
448 acpi_table_print_madt_entry(header);
450 /* TBD: Support nimsrc entries? */
455 #endif /* CONFIG_X86_IO_APIC */
458 * acpi_pic_sci_set_trigger()
460 * use ELCR to set PIC-mode trigger type for SCI
462 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
463 * it may require Edge Trigger -- use "acpi_sci=edge"
465 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
466 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
467 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
468 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
471 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
473 unsigned int mask = 1 << irq;
474 unsigned int old, new;
476 /* Real old ELCR mask */
477 old = inb(0x4d0) | (inb(0x4d1) << 8);
480 * If we use ACPI to set PCI IRQs, then we should clear ELCR
481 * since we will set it correctly as we enable the PCI irq
484 new = acpi_noirq ? old : 0;
487 * Update SCI information in the ELCR, it isn't in the PCI
491 case 1: /* Edge - clear */
494 case 3: /* Level - set */
502 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
504 outb(new >> 8, 0x4d1);
507 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
509 *irq = gsi_to_irq(gsi);
511 #ifdef CONFIG_X86_IO_APIC
512 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
513 setup_IO_APIC_irq_extra(gsi);
518 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
520 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
524 *gsi = irq_to_gsi(isa_irq);
528 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
529 int trigger, int polarity)
533 * Make sure all (legacy) PCI IRQs are set as level-triggered.
535 if (trigger == ACPI_LEVEL_SENSITIVE)
536 eisa_set_level_irq(gsi);
542 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
543 int trigger, int polarity)
545 #ifdef CONFIG_X86_IO_APIC
546 gsi = mp_register_gsi(dev, gsi, trigger, polarity);
552 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
553 int trigger, int polarity) = acpi_register_gsi_pic;
555 #ifdef CONFIG_ACPI_SLEEP
556 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
558 int (*acpi_suspend_lowlevel)(void);
562 * success: return IRQ number (>=0)
563 * failure: return < 0
565 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
568 unsigned int plat_gsi = gsi;
570 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity);
571 irq = gsi_to_irq(plat_gsi);
575 EXPORT_SYMBOL_GPL(acpi_register_gsi);
577 void acpi_unregister_gsi(u32 gsi)
580 EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
582 void __init acpi_set_irq_model_pic(void)
584 acpi_irq_model = ACPI_IRQ_MODEL_PIC;
585 __acpi_register_gsi = acpi_register_gsi_pic;
589 void __init acpi_set_irq_model_ioapic(void)
591 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
592 __acpi_register_gsi = acpi_register_gsi_ioapic;
597 * ACPI based hotplug support for CPU
599 #ifdef CONFIG_ACPI_HOTPLUG_CPU
600 #include <acpi/processor.h>
602 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
604 #ifdef CONFIG_ACPI_NUMA
607 nid = acpi_get_node(handle);
609 set_apicid_to_node(physid, nid);
610 numa_set_node(cpu, nid);
615 static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
619 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED);
621 pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
625 acpi_processor_set_pdc(handle);
626 acpi_map_cpu2node(handle, cpu, physid);
632 /* wrapper to silence section mismatch warning */
633 int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
635 return _acpi_map_lsapic(handle, physid, pcpu);
637 EXPORT_SYMBOL(acpi_map_lsapic);
639 int acpi_unmap_lsapic(int cpu)
641 #ifdef CONFIG_ACPI_NUMA
642 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
645 per_cpu(x86_cpu_to_apicid, cpu) = -1;
646 set_cpu_present(cpu, false);
652 EXPORT_SYMBOL(acpi_unmap_lsapic);
653 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
655 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
661 EXPORT_SYMBOL(acpi_register_ioapic);
663 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
669 EXPORT_SYMBOL(acpi_unregister_ioapic);
671 static int __init acpi_parse_sbf(struct acpi_table_header *table)
673 struct acpi_table_boot *sb;
675 sb = (struct acpi_table_boot *)table;
677 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
681 sbf_port = sb->cmos_index; /* Save CMOS port */
686 #ifdef CONFIG_HPET_TIMER
687 #include <asm/hpet.h>
689 static struct resource *hpet_res __initdata;
691 static int __init acpi_parse_hpet(struct acpi_table_header *table)
693 struct acpi_table_hpet *hpet_tbl;
695 hpet_tbl = (struct acpi_table_hpet *)table;
697 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
701 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
702 printk(KERN_WARNING PREFIX "HPET timers must be located in "
707 hpet_address = hpet_tbl->address.address;
708 hpet_blockid = hpet_tbl->sequence;
711 * Some broken BIOSes advertise HPET at 0x0. We really do not
712 * want to allocate a resource there.
715 printk(KERN_WARNING PREFIX
716 "HPET id: %#x base: %#lx is invalid\n",
717 hpet_tbl->id, hpet_address);
722 * Some even more broken BIOSes advertise HPET at
723 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
726 if (hpet_address == 0xfed0000000000000UL) {
727 if (!hpet_force_user) {
728 printk(KERN_WARNING PREFIX "HPET id: %#x "
729 "base: 0xfed0000000000000 is bogus\n "
730 "try hpet=force on the kernel command line to "
731 "fix it up to 0xfed00000.\n", hpet_tbl->id);
735 printk(KERN_WARNING PREFIX
736 "HPET id: %#x base: 0xfed0000000000000 fixed up "
737 "to 0xfed00000.\n", hpet_tbl->id);
741 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
742 hpet_tbl->id, hpet_address);
745 * Allocate and initialize the HPET firmware resource for adding into
746 * the resource tree during the lateinit timeframe.
748 #define HPET_RESOURCE_NAME_SIZE 9
749 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
751 hpet_res->name = (void *)&hpet_res[1];
752 hpet_res->flags = IORESOURCE_MEM;
753 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
756 hpet_res->start = hpet_address;
757 hpet_res->end = hpet_address + (1 * 1024) - 1;
763 * hpet_insert_resource inserts the HPET resources used into the resource
766 static __init int hpet_insert_resource(void)
771 return insert_resource(&iomem_resource, hpet_res);
774 late_initcall(hpet_insert_resource);
777 #define acpi_parse_hpet NULL
780 static int __init acpi_parse_fadt(struct acpi_table_header *table)
783 #ifdef CONFIG_X86_PM_TIMER
784 /* detect the location of the ACPI PM Timer */
785 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
787 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
788 ACPI_ADR_SPACE_SYSTEM_IO)
791 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
793 * "X" fields are optional extensions to the original V1.0
794 * fields, so we must selectively expand V1.0 fields if the
795 * corresponding X field is zero.
798 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
801 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
804 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
810 #ifdef CONFIG_X86_LOCAL_APIC
812 * Parse LAPIC entries in MADT
813 * returns 0 on success, < 0 on error
816 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
824 * Note that the LAPIC address is obtained from the MADT (32-bit value)
825 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
829 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
830 acpi_parse_lapic_addr_ovr, 0);
832 printk(KERN_ERR PREFIX
833 "Error parsing LAPIC address override entry\n");
837 register_lapic_address(acpi_lapic_addr);
842 static int __init acpi_parse_madt_lapic_entries(void)
851 * Note that the LAPIC address is obtained from the MADT (32-bit value)
852 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
856 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
857 acpi_parse_lapic_addr_ovr, 0);
859 printk(KERN_ERR PREFIX
860 "Error parsing LAPIC address override entry\n");
864 register_lapic_address(acpi_lapic_addr);
866 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
867 acpi_parse_sapic, MAX_LOCAL_APIC);
870 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
871 acpi_parse_x2apic, MAX_LOCAL_APIC);
872 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
873 acpi_parse_lapic, MAX_LOCAL_APIC);
875 if (!count && !x2count) {
876 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
877 /* TBD: Cleanup to allow fallback to MPS */
879 } else if (count < 0 || x2count < 0) {
880 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
881 /* TBD: Cleanup to allow fallback to MPS */
886 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
887 acpi_parse_x2apic_nmi, 0);
889 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
890 if (count < 0 || x2count < 0) {
891 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
892 /* TBD: Cleanup to allow fallback to MPS */
897 #endif /* CONFIG_X86_LOCAL_APIC */
899 #ifdef CONFIG_X86_IO_APIC
902 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
906 struct mpc_intsrc mp_irq;
909 * Convert 'gsi' to 'ioapic.pin'.
911 ioapic = mp_find_ioapic(gsi);
914 pin = mp_find_ioapic_pin(ioapic, gsi);
917 * TBD: This check is for faulty timer entries, where the override
918 * erroneously sets the trigger to level, resulting in a HUGE
919 * increase of timer interrupts!
921 if ((bus_irq == 0) && (trigger == 3))
924 mp_irq.type = MP_INTSRC;
925 mp_irq.irqtype = mp_INT;
926 mp_irq.irqflag = (trigger << 2) | polarity;
927 mp_irq.srcbus = MP_ISA_BUS;
928 mp_irq.srcbusirq = bus_irq; /* IRQ */
929 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
930 mp_irq.dstirq = pin; /* INTIN# */
932 mp_save_irq(&mp_irq);
934 isa_irq_to_gsi[bus_irq] = gsi;
937 void __init mp_config_acpi_legacy_irqs(void)
940 struct mpc_intsrc mp_irq;
944 * Fabricate the legacy ISA bus (bus #31).
946 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
948 set_bit(MP_ISA_BUS, mp_bus_not_pci);
949 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
952 * Use the default configuration for the IRQs 0-15. Unless
953 * overridden by (MADT) interrupt source override entries.
955 for (i = 0; i < 16; i++) {
957 unsigned int dstapic;
961 /* Locate the gsi that irq i maps to. */
962 if (acpi_isa_irq_to_gsi(i, &gsi))
966 * Locate the IOAPIC that manages the ISA IRQ.
968 ioapic = mp_find_ioapic(gsi);
971 pin = mp_find_ioapic_pin(ioapic, gsi);
972 dstapic = mpc_ioapic_id(ioapic);
974 for (idx = 0; idx < mp_irq_entries; idx++) {
975 struct mpc_intsrc *irq = mp_irqs + idx;
977 /* Do we already have a mapping for this ISA IRQ? */
978 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
981 /* Do we already have a mapping for this IOAPIC pin */
982 if (irq->dstapic == dstapic && irq->dstirq == pin)
986 if (idx != mp_irq_entries) {
987 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
988 continue; /* IRQ already used */
991 mp_irq.type = MP_INTSRC;
992 mp_irq.irqflag = 0; /* Conforming */
993 mp_irq.srcbus = MP_ISA_BUS;
994 mp_irq.dstapic = dstapic;
995 mp_irq.irqtype = mp_INT;
996 mp_irq.srcbusirq = i; /* Identity mapped */
999 mp_save_irq(&mp_irq);
1003 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1006 #ifdef CONFIG_X86_MPPARSE
1007 struct mpc_intsrc mp_irq;
1008 struct pci_dev *pdev;
1009 unsigned char number;
1016 if (!dev || !dev_is_pci(dev))
1019 pdev = to_pci_dev(dev);
1020 number = pdev->bus->number;
1021 devfn = pdev->devfn;
1023 /* print the entry should happen on mptable identically */
1024 mp_irq.type = MP_INTSRC;
1025 mp_irq.irqtype = mp_INT;
1026 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1027 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1028 mp_irq.srcbus = number;
1029 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1030 ioapic = mp_find_ioapic(gsi);
1031 mp_irq.dstapic = mpc_ioapic_id(ioapic);
1032 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1034 mp_save_irq(&mp_irq);
1039 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1043 struct io_apic_irq_attr irq_attr;
1046 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1049 /* Don't set up the ACPI SCI because it's already set up */
1050 if (acpi_gbl_FADT.sci_interrupt == gsi)
1053 ioapic = mp_find_ioapic(gsi);
1055 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1059 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1061 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1062 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1063 "%d-%d\n", mpc_ioapic_id(ioapic),
1068 if (enable_update_mptable)
1069 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1071 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1072 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1073 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1074 ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1082 * Parse IOAPIC related entries in MADT
1083 * returns 0 on success, < 0 on error
1085 static int __init acpi_parse_madt_ioapic_entries(void)
1090 * ACPI interpreter is required to complete interrupt setup,
1091 * so if it is off, don't enumerate the io-apics with ACPI.
1092 * If MPS is present, it will handle them,
1093 * otherwise the system will stay in PIC mode
1095 if (acpi_disabled || acpi_noirq)
1102 * if "noapic" boot option, don't look for IO-APICs
1104 if (skip_ioapic_setup) {
1105 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1106 "due to 'noapic' option.\n");
1111 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1114 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1116 } else if (count < 0) {
1117 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1122 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1125 printk(KERN_ERR PREFIX
1126 "Error parsing interrupt source overrides entry\n");
1127 /* TBD: Cleanup to allow fallback to MPS */
1132 * If BIOS did not supply an INT_SRC_OVR for the SCI
1133 * pretend we got one so we can set the SCI flags.
1135 if (!acpi_sci_override_gsi)
1136 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1137 acpi_gbl_FADT.sci_interrupt);
1139 /* Fill in identity legacy mappings where no override */
1140 mp_config_acpi_legacy_irqs();
1143 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1146 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1147 /* TBD: Cleanup to allow fallback to MPS */
1154 static inline int acpi_parse_madt_ioapic_entries(void)
1158 #endif /* !CONFIG_X86_IO_APIC */
1160 static void __init early_acpi_process_madt(void)
1162 #ifdef CONFIG_X86_LOCAL_APIC
1165 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1168 * Parse MADT LAPIC entries
1170 error = early_acpi_parse_madt_lapic_addr_ovr();
1173 smp_found_config = 1;
1175 if (error == -EINVAL) {
1177 * Dell Precision Workstation 410, 610 come here.
1179 printk(KERN_ERR PREFIX
1180 "Invalid BIOS MADT, disabling ACPI\n");
1187 static void __init acpi_process_madt(void)
1189 #ifdef CONFIG_X86_LOCAL_APIC
1192 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1195 * Parse MADT LAPIC entries
1197 error = acpi_parse_madt_lapic_entries();
1202 * Parse MADT IO-APIC entries
1204 error = acpi_parse_madt_ioapic_entries();
1206 acpi_set_irq_model_ioapic();
1208 smp_found_config = 1;
1211 if (error == -EINVAL) {
1213 * Dell Precision Workstation 410, 610 come here.
1215 printk(KERN_ERR PREFIX
1216 "Invalid BIOS MADT, disabling ACPI\n");
1221 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1222 * In the event an MPS table was found, forget it.
1223 * Boot with "acpi=off" to use MPS on such a system.
1225 if (smp_found_config) {
1226 printk(KERN_WARNING PREFIX
1227 "No APIC-table, disabling MPS\n");
1228 smp_found_config = 0;
1233 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1234 * processors, where MPS only supports physical.
1236 if (acpi_lapic && acpi_ioapic)
1237 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1239 else if (acpi_lapic)
1240 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1241 "configuration information\n");
1246 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1249 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1256 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1259 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1266 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1269 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1273 "Warning: DMI blacklist says broken, but acpi forced\n");
1279 * Force ignoring BIOS IRQ0 override
1281 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1283 if (!acpi_skip_timer_override) {
1284 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
1286 acpi_skip_timer_override = 1;
1292 * If your system is blacklisted here, but you find that acpi=force
1293 * works for you, please contact linux-acpi@vger.kernel.org
1295 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1297 * Boxes that need ACPI disabled
1300 .callback = dmi_disable_acpi,
1301 .ident = "IBM Thinkpad",
1303 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1304 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1309 * Boxes that need ACPI PCI IRQ routing disabled
1312 .callback = disable_acpi_irq,
1313 .ident = "ASUS A7V",
1315 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1316 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1317 /* newer BIOS, Revision 1011, does work */
1318 DMI_MATCH(DMI_BIOS_VERSION,
1319 "ASUS A7V ACPI BIOS Revision 1007"),
1324 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1325 * for LPC bridge, which is needed for the PCI
1326 * interrupt links to work. DSDT fix is in bug 5966.
1327 * 2645, 2646 model numbers are shared with 600/600E/600X
1329 .callback = disable_acpi_irq,
1330 .ident = "IBM Thinkpad 600 Series 2645",
1332 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1333 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1337 .callback = disable_acpi_irq,
1338 .ident = "IBM Thinkpad 600 Series 2646",
1340 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1341 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1345 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1348 .callback = disable_acpi_pci,
1349 .ident = "ASUS PR-DLS",
1351 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1352 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1353 DMI_MATCH(DMI_BIOS_VERSION,
1354 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1355 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1359 .callback = disable_acpi_pci,
1360 .ident = "Acer TravelMate 36x Laptop",
1362 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1363 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1369 /* second table for DMI checks that should run after early-quirks */
1370 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1372 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1373 * which includes some code which overrides all temperature
1374 * trip points to 16C if the INTIN2 input of the I/O APIC
1375 * is enabled. This input is incorrectly designated the
1376 * ISA IRQ 0 via an interrupt source override even though
1377 * it is wired to the output of the master 8259A and INTIN0
1378 * is not connected at all. Force ignoring BIOS IRQ0
1379 * override in that cases.
1382 .callback = dmi_ignore_irq0_timer_override,
1383 .ident = "HP nx6115 laptop",
1385 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1386 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1390 .callback = dmi_ignore_irq0_timer_override,
1391 .ident = "HP NX6125 laptop",
1393 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1394 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1398 .callback = dmi_ignore_irq0_timer_override,
1399 .ident = "HP NX6325 laptop",
1401 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1402 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1406 .callback = dmi_ignore_irq0_timer_override,
1407 .ident = "HP 6715b laptop",
1409 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1410 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1414 .callback = dmi_ignore_irq0_timer_override,
1415 .ident = "FUJITSU SIEMENS",
1417 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1418 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1425 * acpi_boot_table_init() and acpi_boot_init()
1426 * called from setup_arch(), always.
1427 * 1. checksums all tables
1428 * 2. enumerates lapics
1429 * 3. enumerates io-apics
1431 * acpi_table_init() is separate to allow reading SRAT without
1432 * other side effects.
1434 * side effects of acpi_boot_init:
1435 * acpi_lapic = 1 if LAPIC found
1436 * acpi_ioapic = 1 if IOAPIC found
1437 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1438 * if acpi_blacklisted() acpi_disabled = 1;
1439 * acpi_irq_model=...
1443 void __init acpi_boot_table_init(void)
1445 dmi_check_system(acpi_dmi_table);
1448 * If acpi_disabled, bail out
1454 * Initialize the ACPI boot-time table parser.
1456 if (acpi_table_init()) {
1461 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1464 * blacklist may disable ACPI entirely
1466 if (acpi_blacklisted()) {
1468 printk(KERN_WARNING PREFIX "acpi=force override\n");
1470 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1477 int __init early_acpi_boot_init(void)
1480 * If acpi_disabled, bail out
1486 * Process the Multiple APIC Description Table (MADT), if present
1488 early_acpi_process_madt();
1493 int __init acpi_boot_init(void)
1495 /* those are executed after early-quirks are executed */
1496 dmi_check_system(acpi_dmi_table_late);
1499 * If acpi_disabled, bail out
1504 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1507 * set sci_int and PM timer address
1509 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1512 * Process the Multiple APIC Description Table (MADT), if present
1514 acpi_process_madt();
1516 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1519 x86_init.pci.init = pci_acpi_init;
1524 static int __init parse_acpi(char *arg)
1529 /* "acpi=off" disables both ACPI table parsing and interpreter */
1530 if (strcmp(arg, "off") == 0) {
1533 /* acpi=force to over-ride black-list */
1534 else if (strcmp(arg, "force") == 0) {
1538 /* acpi=strict disables out-of-spec workarounds */
1539 else if (strcmp(arg, "strict") == 0) {
1542 /* acpi=rsdt use RSDT instead of XSDT */
1543 else if (strcmp(arg, "rsdt") == 0) {
1544 acpi_gbl_do_not_use_xsdt = TRUE;
1546 /* "acpi=noirq" disables ACPI interrupt routing */
1547 else if (strcmp(arg, "noirq") == 0) {
1550 /* "acpi=copy_dsdt" copys DSDT */
1551 else if (strcmp(arg, "copy_dsdt") == 0) {
1552 acpi_gbl_copy_dsdt_locally = 1;
1554 /* "acpi=nocmcff" disables FF mode for corrected errors */
1555 else if (strcmp(arg, "nocmcff") == 0) {
1556 acpi_disable_cmcff = 1;
1558 /* Core will printk when we return error. */
1563 early_param("acpi", parse_acpi);
1565 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1566 static int __init parse_pci(char *arg)
1568 if (arg && strcmp(arg, "noacpi") == 0)
1572 early_param("pci", parse_pci);
1574 int __init acpi_mps_check(void)
1576 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1577 /* mptable code is not built-in*/
1578 if (acpi_disabled || acpi_noirq) {
1579 printk(KERN_WARNING "MPS support code is not built-in.\n"
1580 "Using acpi=off or acpi=noirq or pci=noacpi "
1581 "may have problem\n");
1588 #ifdef CONFIG_X86_IO_APIC
1589 static int __init parse_acpi_skip_timer_override(char *arg)
1591 acpi_skip_timer_override = 1;
1594 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1596 static int __init parse_acpi_use_timer_override(char *arg)
1598 acpi_use_timer_override = 1;
1601 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1602 #endif /* CONFIG_X86_IO_APIC */
1604 static int __init setup_acpi_sci(char *s)
1608 if (!strcmp(s, "edge"))
1609 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1610 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1611 else if (!strcmp(s, "level"))
1612 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1613 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1614 else if (!strcmp(s, "high"))
1615 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1616 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1617 else if (!strcmp(s, "low"))
1618 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1619 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1624 early_param("acpi_sci", setup_acpi_sci);
1626 int __acpi_acquire_global_lock(unsigned int *lock)
1628 unsigned int old, new, val;
1631 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1632 val = cmpxchg(lock, old, new);
1633 } while (unlikely (val != old));
1634 return (new < 3) ? -1 : 0;
1637 int __acpi_release_global_lock(unsigned int *lock)
1639 unsigned int old, new, val;
1643 val = cmpxchg(lock, old, new);
1644 } while (unlikely (val != old));
1648 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1650 e820_add_region(addr, size, E820_ACPI);