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/bootmem.h>
35 #include <linux/ioport.h>
37 #include <asm/pgtable.h>
38 #include <asm/io_apic.h>
41 #include <asm/mpspec.h>
44 static int __initdata acpi_force
= 0;
47 int acpi_disabled
= 0;
49 int acpi_disabled
= 1;
51 EXPORT_SYMBOL(acpi_disabled
);
54 # include <asm/proto.h>
57 #define BAD_MADT_ENTRY(entry, end) ( \
58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
59 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
61 #define PREFIX "ACPI: "
63 int acpi_noirq
; /* skip ACPI IRQ initialization */
64 int acpi_pci_disabled
; /* skip ACPI PCI scan and IRQ initialization */
65 EXPORT_SYMBOL(acpi_pci_disabled
);
66 int acpi_ht __initdata
= 1; /* enable HT */
72 u8 acpi_sci_flags __initdata
;
73 int acpi_sci_override_gsi __initdata
;
74 int acpi_skip_timer_override __initdata
;
75 int acpi_use_timer_override __initdata
;
77 #ifdef CONFIG_X86_LOCAL_APIC
78 static u64 acpi_lapic_addr __initdata
= APIC_DEFAULT_PHYS_BASE
;
81 #ifndef __HAVE_ARCH_CMPXCHG
82 #warning ACPI uses CMPXCHG, i486 and later hardware
85 /* --------------------------------------------------------------------------
86 Boot-time Configuration
87 -------------------------------------------------------------------------- */
90 * The default interrupt routing model is PIC (8259). This gets
91 * overridden if IOAPICs are enumerated (below).
93 enum acpi_irq_model_id acpi_irq_model
= ACPI_IRQ_MODEL_PIC
;
97 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
98 * to map the target physical address. The problem is that set_fixmap()
99 * provides a single page, and it is possible that the page is not
101 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
102 * i.e. until the next __va_range() call.
104 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
105 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
106 * count idx down while incrementing the phys address.
108 char *__init
__acpi_map_table(unsigned long phys
, unsigned long size
)
114 return early_ioremap(phys
, size
);
116 void __init
__acpi_unmap_table(char *map
, unsigned long size
)
121 early_iounmap(map
, size
);
124 #ifdef CONFIG_PCI_MMCONFIG
126 static int acpi_mcfg_64bit_base_addr __initdata
= FALSE
;
128 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
129 struct acpi_mcfg_allocation
*pci_mmcfg_config
;
130 int pci_mmcfg_config_num
;
132 static int __init
acpi_mcfg_oem_check(struct acpi_table_mcfg
*mcfg
)
134 if (!strcmp(mcfg
->header
.oem_id
, "SGI"))
135 acpi_mcfg_64bit_base_addr
= TRUE
;
140 int __init
acpi_parse_mcfg(struct acpi_table_header
*header
)
142 struct acpi_table_mcfg
*mcfg
;
149 mcfg
= (struct acpi_table_mcfg
*)header
;
151 /* how many config structures do we have */
152 pci_mmcfg_config_num
= 0;
153 i
= header
->length
- sizeof(struct acpi_table_mcfg
);
154 while (i
>= sizeof(struct acpi_mcfg_allocation
)) {
155 ++pci_mmcfg_config_num
;
156 i
-= sizeof(struct acpi_mcfg_allocation
);
158 if (pci_mmcfg_config_num
== 0) {
159 printk(KERN_ERR PREFIX
"MMCONFIG has no entries\n");
163 config_size
= pci_mmcfg_config_num
* sizeof(*pci_mmcfg_config
);
164 pci_mmcfg_config
= kmalloc(config_size
, GFP_KERNEL
);
165 if (!pci_mmcfg_config
) {
166 printk(KERN_WARNING PREFIX
167 "No memory for MCFG config tables\n");
171 memcpy(pci_mmcfg_config
, &mcfg
[1], config_size
);
173 acpi_mcfg_oem_check(mcfg
);
175 for (i
= 0; i
< pci_mmcfg_config_num
; ++i
) {
176 if ((pci_mmcfg_config
[i
].address
> 0xFFFFFFFF) &&
177 !acpi_mcfg_64bit_base_addr
) {
178 printk(KERN_ERR PREFIX
179 "MMCONFIG not in low 4GB of memory\n");
180 kfree(pci_mmcfg_config
);
181 pci_mmcfg_config_num
= 0;
188 #endif /* CONFIG_PCI_MMCONFIG */
190 #ifdef CONFIG_X86_LOCAL_APIC
191 static int __init
acpi_parse_madt(struct acpi_table_header
*table
)
193 struct acpi_table_madt
*madt
= NULL
;
198 madt
= (struct acpi_table_madt
*)table
;
200 printk(KERN_WARNING PREFIX
"Unable to map MADT\n");
205 acpi_lapic_addr
= (u64
) madt
->address
;
207 printk(KERN_DEBUG PREFIX
"Local APIC address 0x%08x\n",
211 default_acpi_madt_oem_check(madt
->header
.oem_id
,
212 madt
->header
.oem_table_id
);
217 static void __cpuinit
acpi_register_lapic(int id
, u8 enabled
)
219 unsigned int ver
= 0;
226 if (boot_cpu_physical_apicid
!= -1U)
227 ver
= apic_version
[boot_cpu_physical_apicid
];
229 generic_processor_info(id
, ver
);
233 acpi_parse_x2apic(struct acpi_subtable_header
*header
, const unsigned long end
)
235 struct acpi_madt_local_x2apic
*processor
= NULL
;
237 processor
= (struct acpi_madt_local_x2apic
*)header
;
239 if (BAD_MADT_ENTRY(processor
, end
))
242 acpi_table_print_madt_entry(header
);
244 #ifdef CONFIG_X86_X2APIC
246 * We need to register disabled CPU as well to permit
247 * counting disabled CPUs. This allows us to size
248 * cpus_possible_map more accurately, to permit
249 * to not preallocating memory for all NR_CPUS
250 * when we use CPU hotplug.
252 acpi_register_lapic(processor
->local_apic_id
, /* APIC ID */
253 processor
->lapic_flags
& ACPI_MADT_ENABLED
);
255 printk(KERN_WARNING PREFIX
"x2apic entry ignored\n");
262 acpi_parse_lapic(struct acpi_subtable_header
* header
, const unsigned long end
)
264 struct acpi_madt_local_apic
*processor
= NULL
;
266 processor
= (struct acpi_madt_local_apic
*)header
;
268 if (BAD_MADT_ENTRY(processor
, end
))
271 acpi_table_print_madt_entry(header
);
274 * We need to register disabled CPU as well to permit
275 * counting disabled CPUs. This allows us to size
276 * cpus_possible_map more accurately, to permit
277 * to not preallocating memory for all NR_CPUS
278 * when we use CPU hotplug.
280 acpi_register_lapic(processor
->id
, /* APIC ID */
281 processor
->lapic_flags
& ACPI_MADT_ENABLED
);
287 acpi_parse_sapic(struct acpi_subtable_header
*header
, const unsigned long end
)
289 struct acpi_madt_local_sapic
*processor
= NULL
;
291 processor
= (struct acpi_madt_local_sapic
*)header
;
293 if (BAD_MADT_ENTRY(processor
, end
))
296 acpi_table_print_madt_entry(header
);
298 acpi_register_lapic((processor
->id
<< 8) | processor
->eid
,/* APIC ID */
299 processor
->lapic_flags
& ACPI_MADT_ENABLED
);
305 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header
* header
,
306 const unsigned long end
)
308 struct acpi_madt_local_apic_override
*lapic_addr_ovr
= NULL
;
310 lapic_addr_ovr
= (struct acpi_madt_local_apic_override
*)header
;
312 if (BAD_MADT_ENTRY(lapic_addr_ovr
, end
))
315 acpi_lapic_addr
= lapic_addr_ovr
->address
;
321 acpi_parse_x2apic_nmi(struct acpi_subtable_header
*header
,
322 const unsigned long end
)
324 struct acpi_madt_local_x2apic_nmi
*x2apic_nmi
= NULL
;
326 x2apic_nmi
= (struct acpi_madt_local_x2apic_nmi
*)header
;
328 if (BAD_MADT_ENTRY(x2apic_nmi
, end
))
331 acpi_table_print_madt_entry(header
);
333 if (x2apic_nmi
->lint
!= 1)
334 printk(KERN_WARNING PREFIX
"NMI not connected to LINT 1!\n");
340 acpi_parse_lapic_nmi(struct acpi_subtable_header
* header
, const unsigned long end
)
342 struct acpi_madt_local_apic_nmi
*lapic_nmi
= NULL
;
344 lapic_nmi
= (struct acpi_madt_local_apic_nmi
*)header
;
346 if (BAD_MADT_ENTRY(lapic_nmi
, end
))
349 acpi_table_print_madt_entry(header
);
351 if (lapic_nmi
->lint
!= 1)
352 printk(KERN_WARNING PREFIX
"NMI not connected to LINT 1!\n");
357 #endif /*CONFIG_X86_LOCAL_APIC */
359 #ifdef CONFIG_X86_IO_APIC
362 acpi_parse_ioapic(struct acpi_subtable_header
* header
, const unsigned long end
)
364 struct acpi_madt_io_apic
*ioapic
= NULL
;
366 ioapic
= (struct acpi_madt_io_apic
*)header
;
368 if (BAD_MADT_ENTRY(ioapic
, end
))
371 acpi_table_print_madt_entry(header
);
373 mp_register_ioapic(ioapic
->id
,
374 ioapic
->address
, ioapic
->global_irq_base
);
380 * Parse Interrupt Source Override for the ACPI SCI
382 static void __init
acpi_sci_ioapic_setup(u32 gsi
, u16 polarity
, u16 trigger
)
384 if (trigger
== 0) /* compatible SCI trigger is level */
387 if (polarity
== 0) /* compatible SCI polarity is low */
390 /* Command-line over-ride via acpi_sci= */
391 if (acpi_sci_flags
& ACPI_MADT_TRIGGER_MASK
)
392 trigger
= (acpi_sci_flags
& ACPI_MADT_TRIGGER_MASK
) >> 2;
394 if (acpi_sci_flags
& ACPI_MADT_POLARITY_MASK
)
395 polarity
= acpi_sci_flags
& ACPI_MADT_POLARITY_MASK
;
398 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
399 * If GSI is < 16, this will update its flags,
400 * else it will create a new mp_irqs[] entry.
402 mp_override_legacy_irq(gsi
, polarity
, trigger
, gsi
);
405 * stash over-ride to indicate we've been here
406 * and for later update of acpi_gbl_FADT
408 acpi_sci_override_gsi
= gsi
;
413 acpi_parse_int_src_ovr(struct acpi_subtable_header
* header
,
414 const unsigned long end
)
416 struct acpi_madt_interrupt_override
*intsrc
= NULL
;
418 intsrc
= (struct acpi_madt_interrupt_override
*)header
;
420 if (BAD_MADT_ENTRY(intsrc
, end
))
423 acpi_table_print_madt_entry(header
);
425 if (intsrc
->source_irq
== acpi_gbl_FADT
.sci_interrupt
) {
426 acpi_sci_ioapic_setup(intsrc
->global_irq
,
427 intsrc
->inti_flags
& ACPI_MADT_POLARITY_MASK
,
428 (intsrc
->inti_flags
& ACPI_MADT_TRIGGER_MASK
) >> 2);
432 if (acpi_skip_timer_override
&&
433 intsrc
->source_irq
== 0 && intsrc
->global_irq
== 2) {
434 printk(PREFIX
"BIOS IRQ0 pin2 override ignored.\n");
438 mp_override_legacy_irq(intsrc
->source_irq
,
439 intsrc
->inti_flags
& ACPI_MADT_POLARITY_MASK
,
440 (intsrc
->inti_flags
& ACPI_MADT_TRIGGER_MASK
) >> 2,
447 acpi_parse_nmi_src(struct acpi_subtable_header
* header
, const unsigned long end
)
449 struct acpi_madt_nmi_source
*nmi_src
= NULL
;
451 nmi_src
= (struct acpi_madt_nmi_source
*)header
;
453 if (BAD_MADT_ENTRY(nmi_src
, end
))
456 acpi_table_print_madt_entry(header
);
458 /* TBD: Support nimsrc entries? */
463 #endif /* CONFIG_X86_IO_APIC */
466 * acpi_pic_sci_set_trigger()
468 * use ELCR to set PIC-mode trigger type for SCI
470 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
471 * it may require Edge Trigger -- use "acpi_sci=edge"
473 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
474 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
475 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
476 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
479 void __init
acpi_pic_sci_set_trigger(unsigned int irq
, u16 trigger
)
481 unsigned int mask
= 1 << irq
;
482 unsigned int old
, new;
484 /* Real old ELCR mask */
485 old
= inb(0x4d0) | (inb(0x4d1) << 8);
488 * If we use ACPI to set PCI IRQs, then we should clear ELCR
489 * since we will set it correctly as we enable the PCI irq
492 new = acpi_noirq
? old
: 0;
495 * Update SCI information in the ELCR, it isn't in the PCI
499 case 1: /* Edge - clear */
502 case 3: /* Level - set */
510 printk(PREFIX
"setting ELCR to %04x (from %04x)\n", new, old
);
512 outb(new >> 8, 0x4d1);
515 int acpi_gsi_to_irq(u32 gsi
, unsigned int *irq
)
522 * success: return IRQ number (>=0)
523 * failure: return < 0
525 int acpi_register_gsi(struct device
*dev
, u32 gsi
, int triggering
, int polarity
)
528 unsigned int plat_gsi
= gsi
;
532 * Make sure all (legacy) PCI IRQs are set as level-triggered.
534 if (acpi_irq_model
== ACPI_IRQ_MODEL_PIC
) {
535 if (triggering
== ACPI_LEVEL_SENSITIVE
)
536 eisa_set_level_irq(gsi
);
540 #ifdef CONFIG_X86_IO_APIC
541 if (acpi_irq_model
== ACPI_IRQ_MODEL_IOAPIC
) {
542 plat_gsi
= mp_register_gsi(dev
, gsi
, triggering
, polarity
);
545 acpi_gsi_to_irq(plat_gsi
, &irq
);
550 * ACPI based hotplug support for CPU
552 #ifdef CONFIG_ACPI_HOTPLUG_CPU
554 static int __cpuinit
_acpi_map_lsapic(acpi_handle handle
, int *pcpu
)
556 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
557 union acpi_object
*obj
;
558 struct acpi_madt_local_apic
*lapic
;
559 cpumask_var_t tmp_map
, new_map
;
562 int retval
= -ENOMEM
;
564 if (ACPI_FAILURE(acpi_evaluate_object(handle
, "_MAT", NULL
, &buffer
)))
567 if (!buffer
.length
|| !buffer
.pointer
)
570 obj
= buffer
.pointer
;
571 if (obj
->type
!= ACPI_TYPE_BUFFER
||
572 obj
->buffer
.length
< sizeof(*lapic
)) {
573 kfree(buffer
.pointer
);
577 lapic
= (struct acpi_madt_local_apic
*)obj
->buffer
.pointer
;
579 if (lapic
->header
.type
!= ACPI_MADT_TYPE_LOCAL_APIC
||
580 !(lapic
->lapic_flags
& ACPI_MADT_ENABLED
)) {
581 kfree(buffer
.pointer
);
587 kfree(buffer
.pointer
);
588 buffer
.length
= ACPI_ALLOCATE_BUFFER
;
589 buffer
.pointer
= NULL
;
591 if (!alloc_cpumask_var(&tmp_map
, GFP_KERNEL
))
594 if (!alloc_cpumask_var(&new_map
, GFP_KERNEL
))
597 cpumask_copy(tmp_map
, cpu_present_mask
);
598 acpi_register_lapic(physid
, lapic
->lapic_flags
& ACPI_MADT_ENABLED
);
601 * If mp_register_lapic successfully generates a new logical cpu
602 * number, then the following will get us exactly what was mapped
604 cpumask_andnot(new_map
, cpu_present_mask
, tmp_map
);
605 if (cpumask_empty(new_map
)) {
606 printk ("Unable to map lapic to logical cpu number\n");
611 cpu
= cpumask_first(new_map
);
617 free_cpumask_var(new_map
);
619 free_cpumask_var(tmp_map
);
624 /* wrapper to silence section mismatch warning */
625 int __ref
acpi_map_lsapic(acpi_handle handle
, int *pcpu
)
627 return _acpi_map_lsapic(handle
, pcpu
);
629 EXPORT_SYMBOL(acpi_map_lsapic
);
631 int acpi_unmap_lsapic(int cpu
)
633 per_cpu(x86_cpu_to_apicid
, cpu
) = -1;
634 set_cpu_present(cpu
, false);
640 EXPORT_SYMBOL(acpi_unmap_lsapic
);
641 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
643 int acpi_register_ioapic(acpi_handle handle
, u64 phys_addr
, u32 gsi_base
)
649 EXPORT_SYMBOL(acpi_register_ioapic
);
651 int acpi_unregister_ioapic(acpi_handle handle
, u32 gsi_base
)
657 EXPORT_SYMBOL(acpi_unregister_ioapic
);
659 static int __init
acpi_parse_sbf(struct acpi_table_header
*table
)
661 struct acpi_table_boot
*sb
;
663 sb
= (struct acpi_table_boot
*)table
;
665 printk(KERN_WARNING PREFIX
"Unable to map SBF\n");
669 sbf_port
= sb
->cmos_index
; /* Save CMOS port */
674 #ifdef CONFIG_HPET_TIMER
675 #include <asm/hpet.h>
677 static struct __initdata resource
*hpet_res
;
679 static int __init
acpi_parse_hpet(struct acpi_table_header
*table
)
681 struct acpi_table_hpet
*hpet_tbl
;
683 hpet_tbl
= (struct acpi_table_hpet
*)table
;
685 printk(KERN_WARNING PREFIX
"Unable to map HPET\n");
689 if (hpet_tbl
->address
.space_id
!= ACPI_SPACE_MEM
) {
690 printk(KERN_WARNING PREFIX
"HPET timers must be located in "
695 hpet_address
= hpet_tbl
->address
.address
;
698 * Some broken BIOSes advertise HPET at 0x0. We really do not
699 * want to allocate a resource there.
702 printk(KERN_WARNING PREFIX
703 "HPET id: %#x base: %#lx is invalid\n",
704 hpet_tbl
->id
, hpet_address
);
709 * Some even more broken BIOSes advertise HPET at
710 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
713 if (hpet_address
== 0xfed0000000000000UL
) {
714 if (!hpet_force_user
) {
715 printk(KERN_WARNING PREFIX
"HPET id: %#x "
716 "base: 0xfed0000000000000 is bogus\n "
717 "try hpet=force on the kernel command line to "
718 "fix it up to 0xfed00000.\n", hpet_tbl
->id
);
722 printk(KERN_WARNING PREFIX
723 "HPET id: %#x base: 0xfed0000000000000 fixed up "
724 "to 0xfed00000.\n", hpet_tbl
->id
);
728 printk(KERN_INFO PREFIX
"HPET id: %#x base: %#lx\n",
729 hpet_tbl
->id
, hpet_address
);
732 * Allocate and initialize the HPET firmware resource for adding into
733 * the resource tree during the lateinit timeframe.
735 #define HPET_RESOURCE_NAME_SIZE 9
736 hpet_res
= alloc_bootmem(sizeof(*hpet_res
) + HPET_RESOURCE_NAME_SIZE
);
738 hpet_res
->name
= (void *)&hpet_res
[1];
739 hpet_res
->flags
= IORESOURCE_MEM
;
740 snprintf((char *)hpet_res
->name
, HPET_RESOURCE_NAME_SIZE
, "HPET %u",
743 hpet_res
->start
= hpet_address
;
744 hpet_res
->end
= hpet_address
+ (1 * 1024) - 1;
750 * hpet_insert_resource inserts the HPET resources used into the resource
753 static __init
int hpet_insert_resource(void)
758 return insert_resource(&iomem_resource
, hpet_res
);
761 late_initcall(hpet_insert_resource
);
764 #define acpi_parse_hpet NULL
767 static int __init
acpi_parse_fadt(struct acpi_table_header
*table
)
770 #ifdef CONFIG_X86_PM_TIMER
771 /* detect the location of the ACPI PM Timer */
772 if (acpi_gbl_FADT
.header
.revision
>= FADT2_REVISION_ID
) {
774 if (acpi_gbl_FADT
.xpm_timer_block
.space_id
!=
775 ACPI_ADR_SPACE_SYSTEM_IO
)
778 pmtmr_ioport
= acpi_gbl_FADT
.xpm_timer_block
.address
;
780 * "X" fields are optional extensions to the original V1.0
781 * fields, so we must selectively expand V1.0 fields if the
782 * corresponding X field is zero.
785 pmtmr_ioport
= acpi_gbl_FADT
.pm_timer_block
;
788 pmtmr_ioport
= acpi_gbl_FADT
.pm_timer_block
;
791 printk(KERN_INFO PREFIX
"PM-Timer IO Port: %#x\n",
797 #ifdef CONFIG_X86_LOCAL_APIC
799 * Parse LAPIC entries in MADT
800 * returns 0 on success, < 0 on error
803 static void __init
acpi_register_lapic_address(unsigned long address
)
805 mp_lapic_addr
= address
;
807 set_fixmap_nocache(FIX_APIC_BASE
, address
);
808 if (boot_cpu_physical_apicid
== -1U) {
809 boot_cpu_physical_apicid
= read_apic_id();
810 apic_version
[boot_cpu_physical_apicid
] =
811 GET_APIC_VERSION(apic_read(APIC_LVR
));
815 static int __init
early_acpi_parse_madt_lapic_addr_ovr(void)
823 * Note that the LAPIC address is obtained from the MADT (32-bit value)
824 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
828 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE
,
829 acpi_parse_lapic_addr_ovr
, 0);
831 printk(KERN_ERR PREFIX
832 "Error parsing LAPIC address override entry\n");
836 acpi_register_lapic_address(acpi_lapic_addr
);
841 static int __init
acpi_parse_madt_lapic_entries(void)
850 * Note that the LAPIC address is obtained from the MADT (32-bit value)
851 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
855 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE
,
856 acpi_parse_lapic_addr_ovr
, 0);
858 printk(KERN_ERR PREFIX
859 "Error parsing LAPIC address override entry\n");
863 acpi_register_lapic_address(acpi_lapic_addr
);
865 count
= acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC
,
866 acpi_parse_sapic
, MAX_APICS
);
869 x2count
= acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC
,
870 acpi_parse_x2apic
, MAX_APICS
);
871 count
= acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC
,
872 acpi_parse_lapic
, MAX_APICS
);
874 if (!count
&& !x2count
) {
875 printk(KERN_ERR PREFIX
"No LAPIC entries present\n");
876 /* TBD: Cleanup to allow fallback to MPS */
878 } else if (count
< 0 || x2count
< 0) {
879 printk(KERN_ERR PREFIX
"Error parsing LAPIC entry\n");
880 /* TBD: Cleanup to allow fallback to MPS */
885 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI
,
886 acpi_parse_x2apic_nmi
, 0);
888 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI
, acpi_parse_lapic_nmi
, 0);
889 if (count
< 0 || x2count
< 0) {
890 printk(KERN_ERR PREFIX
"Error parsing LAPIC NMI entry\n");
891 /* TBD: Cleanup to allow fallback to MPS */
896 #endif /* CONFIG_X86_LOCAL_APIC */
898 #ifdef CONFIG_X86_IO_APIC
901 #ifdef CONFIG_X86_ES7000
902 extern int es7000_plat
;
909 DECLARE_BITMAP(pin_programmed
, MP_MAX_IOAPIC_PIN
+ 1);
910 } mp_ioapic_routing
[MAX_IO_APICS
];
912 int mp_find_ioapic(int gsi
)
916 /* Find the IOAPIC that manages this GSI. */
917 for (i
= 0; i
< nr_ioapics
; i
++) {
918 if ((gsi
>= mp_ioapic_routing
[i
].gsi_base
)
919 && (gsi
<= mp_ioapic_routing
[i
].gsi_end
))
923 printk(KERN_ERR
"ERROR: Unable to locate IOAPIC for GSI %d\n", gsi
);
927 int mp_find_ioapic_pin(int ioapic
, int gsi
)
929 if (WARN_ON(ioapic
== -1))
931 if (WARN_ON(gsi
> mp_ioapic_routing
[ioapic
].gsi_end
))
934 return gsi
- mp_ioapic_routing
[ioapic
].gsi_base
;
937 static u8 __init
uniq_ioapic_id(u8 id
)
940 if ((boot_cpu_data
.x86_vendor
== X86_VENDOR_INTEL
) &&
941 !APIC_XAPIC(apic_version
[boot_cpu_physical_apicid
]))
942 return io_apic_get_unique_id(nr_ioapics
, id
);
947 DECLARE_BITMAP(used
, 256);
948 bitmap_zero(used
, 256);
949 for (i
= 0; i
< nr_ioapics
; i
++) {
950 struct mpc_ioapic
*ia
= &mp_ioapics
[i
];
951 __set_bit(ia
->apicid
, used
);
953 if (!test_bit(id
, used
))
955 return find_first_zero_bit(used
, 256);
959 static int bad_ioapic(unsigned long address
)
961 if (nr_ioapics
>= MAX_IO_APICS
) {
962 printk(KERN_ERR
"ERROR: Max # of I/O APICs (%d) exceeded "
963 "(found %d)\n", MAX_IO_APICS
, nr_ioapics
);
964 panic("Recompile kernel with bigger MAX_IO_APICS!\n");
967 printk(KERN_ERR
"WARNING: Bogus (zero) I/O APIC address"
968 " found in table, skipping!\n");
974 void __init
mp_register_ioapic(int id
, u32 address
, u32 gsi_base
)
978 if (bad_ioapic(address
))
983 mp_ioapics
[idx
].type
= MP_IOAPIC
;
984 mp_ioapics
[idx
].flags
= MPC_APIC_USABLE
;
985 mp_ioapics
[idx
].apicaddr
= address
;
987 set_fixmap_nocache(FIX_IO_APIC_BASE_0
+ idx
, address
);
988 mp_ioapics
[idx
].apicid
= uniq_ioapic_id(id
);
990 mp_ioapics
[idx
].apicver
= io_apic_get_version(idx
);
992 mp_ioapics
[idx
].apicver
= 0;
995 * Build basic GSI lookup table to facilitate gsi->io_apic lookups
996 * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
998 mp_ioapic_routing
[idx
].apic_id
= mp_ioapics
[idx
].apicid
;
999 mp_ioapic_routing
[idx
].gsi_base
= gsi_base
;
1000 mp_ioapic_routing
[idx
].gsi_end
= gsi_base
+
1001 io_apic_get_redir_entries(idx
);
1003 printk(KERN_INFO
"IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
1004 "GSI %d-%d\n", idx
, mp_ioapics
[idx
].apicid
,
1005 mp_ioapics
[idx
].apicver
, mp_ioapics
[idx
].apicaddr
,
1006 mp_ioapic_routing
[idx
].gsi_base
, mp_ioapic_routing
[idx
].gsi_end
);
1011 int __init
acpi_probe_gsi(void)
1024 for (idx
= 0; idx
< nr_ioapics
; idx
++) {
1025 gsi
= mp_ioapic_routing
[idx
].gsi_end
;
1034 static void assign_to_mp_irq(struct mpc_intsrc
*m
,
1035 struct mpc_intsrc
*mp_irq
)
1037 memcpy(mp_irq
, m
, sizeof(struct mpc_intsrc
));
1040 static int mp_irq_cmp(struct mpc_intsrc
*mp_irq
,
1041 struct mpc_intsrc
*m
)
1043 return memcmp(mp_irq
, m
, sizeof(struct mpc_intsrc
));
1046 static void save_mp_irq(struct mpc_intsrc
*m
)
1050 for (i
= 0; i
< mp_irq_entries
; i
++) {
1051 if (!mp_irq_cmp(&mp_irqs
[i
], m
))
1055 assign_to_mp_irq(m
, &mp_irqs
[mp_irq_entries
]);
1056 if (++mp_irq_entries
== MAX_IRQ_SOURCES
)
1057 panic("Max # of irq sources exceeded!!\n");
1060 void __init
mp_override_legacy_irq(u8 bus_irq
, u8 polarity
, u8 trigger
, u32 gsi
)
1064 struct mpc_intsrc mp_irq
;
1067 * Convert 'gsi' to 'ioapic.pin'.
1069 ioapic
= mp_find_ioapic(gsi
);
1072 pin
= mp_find_ioapic_pin(ioapic
, gsi
);
1075 * TBD: This check is for faulty timer entries, where the override
1076 * erroneously sets the trigger to level, resulting in a HUGE
1077 * increase of timer interrupts!
1079 if ((bus_irq
== 0) && (trigger
== 3))
1082 mp_irq
.type
= MP_INTSRC
;
1083 mp_irq
.irqtype
= mp_INT
;
1084 mp_irq
.irqflag
= (trigger
<< 2) | polarity
;
1085 mp_irq
.srcbus
= MP_ISA_BUS
;
1086 mp_irq
.srcbusirq
= bus_irq
; /* IRQ */
1087 mp_irq
.dstapic
= mp_ioapics
[ioapic
].apicid
; /* APIC ID */
1088 mp_irq
.dstirq
= pin
; /* INTIN# */
1090 save_mp_irq(&mp_irq
);
1093 void __init
mp_config_acpi_legacy_irqs(void)
1097 unsigned int dstapic
;
1098 struct mpc_intsrc mp_irq
;
1100 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
1102 * Fabricate the legacy ISA bus (bus #31).
1104 mp_bus_id_to_type
[MP_ISA_BUS
] = MP_BUS_ISA
;
1106 set_bit(MP_ISA_BUS
, mp_bus_not_pci
);
1107 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS
);
1109 #ifdef CONFIG_X86_ES7000
1111 * Older generations of ES7000 have no legacy identity mappings
1113 if (es7000_plat
== 1)
1118 * Locate the IOAPIC that manages the ISA IRQs (0-15).
1120 ioapic
= mp_find_ioapic(0);
1123 dstapic
= mp_ioapics
[ioapic
].apicid
;
1126 * Use the default configuration for the IRQs 0-15. Unless
1127 * overridden by (MADT) interrupt source override entries.
1129 for (i
= 0; i
< 16; i
++) {
1132 for (idx
= 0; idx
< mp_irq_entries
; idx
++) {
1133 struct mpc_intsrc
*irq
= mp_irqs
+ idx
;
1135 /* Do we already have a mapping for this ISA IRQ? */
1136 if (irq
->srcbus
== MP_ISA_BUS
&& irq
->srcbusirq
== i
)
1139 /* Do we already have a mapping for this IOAPIC pin */
1140 if (irq
->dstapic
== dstapic
&& irq
->dstirq
== i
)
1144 if (idx
!= mp_irq_entries
) {
1145 printk(KERN_DEBUG
"ACPI: IRQ%d used by override.\n", i
);
1146 continue; /* IRQ already used */
1149 mp_irq
.type
= MP_INTSRC
;
1150 mp_irq
.irqflag
= 0; /* Conforming */
1151 mp_irq
.srcbus
= MP_ISA_BUS
;
1152 mp_irq
.dstapic
= dstapic
;
1153 mp_irq
.irqtype
= mp_INT
;
1154 mp_irq
.srcbusirq
= i
; /* Identity mapped */
1157 save_mp_irq(&mp_irq
);
1161 int mp_register_gsi(struct device
*dev
, u32 gsi
, int triggering
, int polarity
)
1165 #ifdef CONFIG_X86_32
1166 #define MAX_GSI_NUM 4096
1167 #define IRQ_COMPRESSION_START 64
1169 static int pci_irq
= IRQ_COMPRESSION_START
;
1171 * Mapping between Global System Interrupts, which
1172 * represent all possible interrupts, and IRQs
1173 * assigned to actual devices.
1175 static int gsi_to_irq
[MAX_GSI_NUM
];
1178 if (acpi_irq_model
!= ACPI_IRQ_MODEL_IOAPIC
)
1182 /* Don't set up the ACPI SCI because it's already set up */
1183 if (acpi_gbl_FADT
.sci_interrupt
== gsi
)
1186 ioapic
= mp_find_ioapic(gsi
);
1188 printk(KERN_WARNING
"No IOAPIC for GSI %u\n", gsi
);
1192 ioapic_pin
= mp_find_ioapic_pin(ioapic
, gsi
);
1194 #ifdef CONFIG_X86_32
1195 if (ioapic_renumber_irq
)
1196 gsi
= ioapic_renumber_irq(ioapic
, gsi
);
1200 * Avoid pin reprogramming. PRTs typically include entries
1201 * with redundant pin->gsi mappings (but unique PCI devices);
1202 * we only program the IOAPIC on the first.
1204 if (ioapic_pin
> MP_MAX_IOAPIC_PIN
) {
1205 printk(KERN_ERR
"Invalid reference to IOAPIC pin "
1206 "%d-%d\n", mp_ioapic_routing
[ioapic
].apic_id
,
1210 if (test_bit(ioapic_pin
, mp_ioapic_routing
[ioapic
].pin_programmed
)) {
1211 pr_debug("Pin %d-%d already programmed\n",
1212 mp_ioapic_routing
[ioapic
].apic_id
, ioapic_pin
);
1213 #ifdef CONFIG_X86_32
1214 return (gsi
< IRQ_COMPRESSION_START
? gsi
: gsi_to_irq
[gsi
]);
1220 set_bit(ioapic_pin
, mp_ioapic_routing
[ioapic
].pin_programmed
);
1221 #ifdef CONFIG_X86_32
1223 * For GSI >= 64, use IRQ compression
1225 if ((gsi
>= IRQ_COMPRESSION_START
)
1226 && (triggering
== ACPI_LEVEL_SENSITIVE
)) {
1228 * For PCI devices assign IRQs in order, avoiding gaps
1229 * due to unused I/O APIC pins.
1232 if (gsi
< MAX_GSI_NUM
) {
1234 * Retain the VIA chipset work-around (gsi > 15), but
1235 * avoid a problem where the 8254 timer (IRQ0) is setup
1236 * via an override (so it's not on pin 0 of the ioapic),
1237 * and at the same time, the pin 0 interrupt is a PCI
1238 * type. The gsi > 15 test could cause these two pins
1239 * to be shared as IRQ0, and they are not shareable.
1240 * So test for this condition, and if necessary, avoid
1241 * the pin collision.
1245 * Don't assign IRQ used by ACPI SCI
1247 if (gsi
== acpi_gbl_FADT
.sci_interrupt
)
1249 gsi_to_irq
[irq
] = gsi
;
1251 printk(KERN_ERR
"GSI %u is too high\n", gsi
);
1256 io_apic_set_pci_routing(dev
, ioapic
, ioapic_pin
, gsi
,
1257 triggering
== ACPI_EDGE_SENSITIVE
? 0 : 1,
1258 polarity
== ACPI_ACTIVE_HIGH
? 0 : 1);
1262 int mp_config_acpi_gsi(unsigned char number
, unsigned int devfn
, u8 pin
,
1263 u32 gsi
, int triggering
, int polarity
)
1265 #ifdef CONFIG_X86_MPPARSE
1266 struct mpc_intsrc mp_irq
;
1272 /* print the entry should happen on mptable identically */
1273 mp_irq
.type
= MP_INTSRC
;
1274 mp_irq
.irqtype
= mp_INT
;
1275 mp_irq
.irqflag
= (triggering
== ACPI_EDGE_SENSITIVE
? 4 : 0x0c) |
1276 (polarity
== ACPI_ACTIVE_HIGH
? 1 : 3);
1277 mp_irq
.srcbus
= number
;
1278 mp_irq
.srcbusirq
= (((devfn
>> 3) & 0x1f) << 2) | ((pin
- 1) & 3);
1279 ioapic
= mp_find_ioapic(gsi
);
1280 mp_irq
.dstapic
= mp_ioapic_routing
[ioapic
].apic_id
;
1281 mp_irq
.dstirq
= mp_find_ioapic_pin(ioapic
, gsi
);
1283 save_mp_irq(&mp_irq
);
1289 * Parse IOAPIC related entries in MADT
1290 * returns 0 on success, < 0 on error
1292 static int __init
acpi_parse_madt_ioapic_entries(void)
1297 * ACPI interpreter is required to complete interrupt setup,
1298 * so if it is off, don't enumerate the io-apics with ACPI.
1299 * If MPS is present, it will handle them,
1300 * otherwise the system will stay in PIC mode
1302 if (acpi_disabled
|| acpi_noirq
) {
1310 * if "noapic" boot option, don't look for IO-APICs
1312 if (skip_ioapic_setup
) {
1313 printk(KERN_INFO PREFIX
"Skipping IOAPIC probe "
1314 "due to 'noapic' option.\n");
1319 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC
, acpi_parse_ioapic
,
1322 printk(KERN_ERR PREFIX
"No IOAPIC entries present\n");
1324 } else if (count
< 0) {
1325 printk(KERN_ERR PREFIX
"Error parsing IOAPIC entry\n");
1330 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE
, acpi_parse_int_src_ovr
,
1333 printk(KERN_ERR PREFIX
1334 "Error parsing interrupt source overrides entry\n");
1335 /* TBD: Cleanup to allow fallback to MPS */
1340 * If BIOS did not supply an INT_SRC_OVR for the SCI
1341 * pretend we got one so we can set the SCI flags.
1343 if (!acpi_sci_override_gsi
)
1344 acpi_sci_ioapic_setup(acpi_gbl_FADT
.sci_interrupt
, 0, 0);
1346 /* Fill in identity legacy mapings where no override */
1347 mp_config_acpi_legacy_irqs();
1350 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE
, acpi_parse_nmi_src
,
1353 printk(KERN_ERR PREFIX
"Error parsing NMI SRC entry\n");
1354 /* TBD: Cleanup to allow fallback to MPS */
1361 static inline int acpi_parse_madt_ioapic_entries(void)
1365 #endif /* !CONFIG_X86_IO_APIC */
1367 static void __init
early_acpi_process_madt(void)
1369 #ifdef CONFIG_X86_LOCAL_APIC
1372 if (!acpi_table_parse(ACPI_SIG_MADT
, acpi_parse_madt
)) {
1375 * Parse MADT LAPIC entries
1377 error
= early_acpi_parse_madt_lapic_addr_ovr();
1380 smp_found_config
= 1;
1382 if (error
== -EINVAL
) {
1384 * Dell Precision Workstation 410, 610 come here.
1386 printk(KERN_ERR PREFIX
1387 "Invalid BIOS MADT, disabling ACPI\n");
1394 static void __init
acpi_process_madt(void)
1396 #ifdef CONFIG_X86_LOCAL_APIC
1399 if (!acpi_table_parse(ACPI_SIG_MADT
, acpi_parse_madt
)) {
1402 * Parse MADT LAPIC entries
1404 error
= acpi_parse_madt_lapic_entries();
1408 #ifdef CONFIG_X86_BIGSMP
1409 generic_bigsmp_probe();
1412 * Parse MADT IO-APIC entries
1414 error
= acpi_parse_madt_ioapic_entries();
1416 acpi_irq_model
= ACPI_IRQ_MODEL_IOAPIC
;
1419 smp_found_config
= 1;
1420 if (apic
->setup_apic_routing
)
1421 apic
->setup_apic_routing();
1424 if (error
== -EINVAL
) {
1426 * Dell Precision Workstation 410, 610 come here.
1428 printk(KERN_ERR PREFIX
1429 "Invalid BIOS MADT, disabling ACPI\n");
1434 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1435 * In the event an MPS table was found, forget it.
1436 * Boot with "acpi=off" to use MPS on such a system.
1438 if (smp_found_config
) {
1439 printk(KERN_WARNING PREFIX
1440 "No APIC-table, disabling MPS\n");
1441 smp_found_config
= 0;
1446 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1447 * processors, where MPS only supports physical.
1449 if (acpi_lapic
&& acpi_ioapic
)
1450 printk(KERN_INFO
"Using ACPI (MADT) for SMP configuration "
1452 else if (acpi_lapic
)
1453 printk(KERN_INFO
"Using ACPI for processor (LAPIC) "
1454 "configuration information\n");
1459 static int __init
disable_acpi_irq(const struct dmi_system_id
*d
)
1462 printk(KERN_NOTICE
"%s detected: force use of acpi=noirq\n",
1469 static int __init
disable_acpi_pci(const struct dmi_system_id
*d
)
1472 printk(KERN_NOTICE
"%s detected: force use of pci=noacpi\n",
1479 static int __init
dmi_disable_acpi(const struct dmi_system_id
*d
)
1482 printk(KERN_NOTICE
"%s detected: acpi off\n", d
->ident
);
1486 "Warning: DMI blacklist says broken, but acpi forced\n");
1492 * Limit ACPI to CPU enumeration for HT
1494 static int __init
force_acpi_ht(const struct dmi_system_id
*d
)
1497 printk(KERN_NOTICE
"%s detected: force use of acpi=ht\n",
1503 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
1509 * Force ignoring BIOS IRQ0 pin2 override
1511 static int __init
dmi_ignore_irq0_timer_override(const struct dmi_system_id
*d
)
1514 * The ati_ixp4x0_rev() early PCI quirk should have set
1515 * the acpi_skip_timer_override flag already:
1517 if (!acpi_skip_timer_override
) {
1518 WARN(1, KERN_ERR
"ati_ixp4x0 quirk not complete.\n");
1519 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1521 acpi_skip_timer_override
= 1;
1527 * If your system is blacklisted here, but you find that acpi=force
1528 * works for you, please contact linux-acpi@vger.kernel.org
1530 static struct dmi_system_id __initdata acpi_dmi_table
[] = {
1532 * Boxes that need ACPI disabled
1535 .callback
= dmi_disable_acpi
,
1536 .ident
= "IBM Thinkpad",
1538 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1539 DMI_MATCH(DMI_BOARD_NAME
, "2629H1G"),
1544 * Boxes that need acpi=ht
1547 .callback
= force_acpi_ht
,
1548 .ident
= "FSC Primergy T850",
1550 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU SIEMENS"),
1551 DMI_MATCH(DMI_PRODUCT_NAME
, "PRIMERGY T850"),
1555 .callback
= force_acpi_ht
,
1556 .ident
= "HP VISUALIZE NT Workstation",
1558 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
1559 DMI_MATCH(DMI_PRODUCT_NAME
, "HP VISUALIZE NT Workstation"),
1563 .callback
= force_acpi_ht
,
1564 .ident
= "Compaq Workstation W8000",
1566 DMI_MATCH(DMI_SYS_VENDOR
, "Compaq"),
1567 DMI_MATCH(DMI_PRODUCT_NAME
, "Workstation W8000"),
1571 .callback
= force_acpi_ht
,
1572 .ident
= "ASUS P4B266",
1574 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1575 DMI_MATCH(DMI_BOARD_NAME
, "P4B266"),
1579 .callback
= force_acpi_ht
,
1580 .ident
= "ASUS P2B-DS",
1582 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1583 DMI_MATCH(DMI_BOARD_NAME
, "P2B-DS"),
1587 .callback
= force_acpi_ht
,
1588 .ident
= "ASUS CUR-DLS",
1590 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1591 DMI_MATCH(DMI_BOARD_NAME
, "CUR-DLS"),
1595 .callback
= force_acpi_ht
,
1596 .ident
= "ABIT i440BX-W83977",
1598 DMI_MATCH(DMI_BOARD_VENDOR
, "ABIT <http://www.abit.com>"),
1599 DMI_MATCH(DMI_BOARD_NAME
, "i440BX-W83977 (BP6)"),
1603 .callback
= force_acpi_ht
,
1604 .ident
= "IBM Bladecenter",
1606 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1607 DMI_MATCH(DMI_BOARD_NAME
, "IBM eServer BladeCenter HS20"),
1611 .callback
= force_acpi_ht
,
1612 .ident
= "IBM eServer xSeries 360",
1614 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1615 DMI_MATCH(DMI_BOARD_NAME
, "eServer xSeries 360"),
1619 .callback
= force_acpi_ht
,
1620 .ident
= "IBM eserver xSeries 330",
1622 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1623 DMI_MATCH(DMI_BOARD_NAME
, "eserver xSeries 330"),
1627 .callback
= force_acpi_ht
,
1628 .ident
= "IBM eserver xSeries 440",
1630 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1631 DMI_MATCH(DMI_PRODUCT_NAME
, "eserver xSeries 440"),
1636 * Boxes that need ACPI PCI IRQ routing disabled
1639 .callback
= disable_acpi_irq
,
1640 .ident
= "ASUS A7V",
1642 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC"),
1643 DMI_MATCH(DMI_BOARD_NAME
, "<A7V>"),
1644 /* newer BIOS, Revision 1011, does work */
1645 DMI_MATCH(DMI_BIOS_VERSION
,
1646 "ASUS A7V ACPI BIOS Revision 1007"),
1651 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1652 * for LPC bridge, which is needed for the PCI
1653 * interrupt links to work. DSDT fix is in bug 5966.
1654 * 2645, 2646 model numbers are shared with 600/600E/600X
1656 .callback
= disable_acpi_irq
,
1657 .ident
= "IBM Thinkpad 600 Series 2645",
1659 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1660 DMI_MATCH(DMI_BOARD_NAME
, "2645"),
1664 .callback
= disable_acpi_irq
,
1665 .ident
= "IBM Thinkpad 600 Series 2646",
1667 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1668 DMI_MATCH(DMI_BOARD_NAME
, "2646"),
1672 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1675 .callback
= disable_acpi_pci
,
1676 .ident
= "ASUS PR-DLS",
1678 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1679 DMI_MATCH(DMI_BOARD_NAME
, "PR-DLS"),
1680 DMI_MATCH(DMI_BIOS_VERSION
,
1681 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1682 DMI_MATCH(DMI_BIOS_DATE
, "03/21/2003")
1686 .callback
= disable_acpi_pci
,
1687 .ident
= "Acer TravelMate 36x Laptop",
1689 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
1690 DMI_MATCH(DMI_PRODUCT_NAME
, "TravelMate 360"),
1696 /* second table for DMI checks that should run after early-quirks */
1697 static struct dmi_system_id __initdata acpi_dmi_table_late
[] = {
1699 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1700 * which includes some code which overrides all temperature
1701 * trip points to 16C if the INTIN2 input of the I/O APIC
1702 * is enabled. This input is incorrectly designated the
1703 * ISA IRQ 0 via an interrupt source override even though
1704 * it is wired to the output of the master 8259A and INTIN0
1705 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1706 * override in that cases.
1709 .callback
= dmi_ignore_irq0_timer_override
,
1710 .ident
= "HP nx6115 laptop",
1712 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1713 DMI_MATCH(DMI_PRODUCT_NAME
, "HP Compaq nx6115"),
1717 .callback
= dmi_ignore_irq0_timer_override
,
1718 .ident
= "HP NX6125 laptop",
1720 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1721 DMI_MATCH(DMI_PRODUCT_NAME
, "HP Compaq nx6125"),
1725 .callback
= dmi_ignore_irq0_timer_override
,
1726 .ident
= "HP NX6325 laptop",
1728 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1729 DMI_MATCH(DMI_PRODUCT_NAME
, "HP Compaq nx6325"),
1733 .callback
= dmi_ignore_irq0_timer_override
,
1734 .ident
= "HP 6715b laptop",
1736 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1737 DMI_MATCH(DMI_PRODUCT_NAME
, "HP Compaq 6715b"),
1744 * acpi_boot_table_init() and acpi_boot_init()
1745 * called from setup_arch(), always.
1746 * 1. checksums all tables
1747 * 2. enumerates lapics
1748 * 3. enumerates io-apics
1750 * acpi_table_init() is separate to allow reading SRAT without
1751 * other side effects.
1753 * side effects of acpi_boot_init:
1754 * acpi_lapic = 1 if LAPIC found
1755 * acpi_ioapic = 1 if IOAPIC found
1756 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1757 * if acpi_blacklisted() acpi_disabled = 1;
1758 * acpi_irq_model=...
1761 * return value: (currently ignored)
1766 int __init
acpi_boot_table_init(void)
1770 dmi_check_system(acpi_dmi_table
);
1773 * If acpi_disabled, bail out
1774 * One exception: acpi=ht continues far enough to enumerate LAPICs
1776 if (acpi_disabled
&& !acpi_ht
)
1780 * Initialize the ACPI boot-time table parser.
1782 error
= acpi_table_init();
1788 acpi_table_parse(ACPI_SIG_BOOT
, acpi_parse_sbf
);
1791 * blacklist may disable ACPI entirely
1793 error
= acpi_blacklisted();
1796 printk(KERN_WARNING PREFIX
"acpi=force override\n");
1798 printk(KERN_WARNING PREFIX
"Disabling ACPI support\n");
1807 int __init
early_acpi_boot_init(void)
1810 * If acpi_disabled, bail out
1811 * One exception: acpi=ht continues far enough to enumerate LAPICs
1813 if (acpi_disabled
&& !acpi_ht
)
1817 * Process the Multiple APIC Description Table (MADT), if present
1819 early_acpi_process_madt();
1824 int __init
acpi_boot_init(void)
1826 /* those are executed after early-quirks are executed */
1827 dmi_check_system(acpi_dmi_table_late
);
1830 * If acpi_disabled, bail out
1831 * One exception: acpi=ht continues far enough to enumerate LAPICs
1833 if (acpi_disabled
&& !acpi_ht
)
1836 acpi_table_parse(ACPI_SIG_BOOT
, acpi_parse_sbf
);
1839 * set sci_int and PM timer address
1841 acpi_table_parse(ACPI_SIG_FADT
, acpi_parse_fadt
);
1844 * Process the Multiple APIC Description Table (MADT), if present
1846 acpi_process_madt();
1848 acpi_table_parse(ACPI_SIG_HPET
, acpi_parse_hpet
);
1853 static int __init
parse_acpi(char *arg
)
1858 /* "acpi=off" disables both ACPI table parsing and interpreter */
1859 if (strcmp(arg
, "off") == 0) {
1862 /* acpi=force to over-ride black-list */
1863 else if (strcmp(arg
, "force") == 0) {
1868 /* acpi=strict disables out-of-spec workarounds */
1869 else if (strcmp(arg
, "strict") == 0) {
1872 /* Limit ACPI just to boot-time to enable HT */
1873 else if (strcmp(arg
, "ht") == 0) {
1878 /* acpi=rsdt use RSDT instead of XSDT */
1879 else if (strcmp(arg
, "rsdt") == 0) {
1880 acpi_rsdt_forced
= 1;
1882 /* "acpi=noirq" disables ACPI interrupt routing */
1883 else if (strcmp(arg
, "noirq") == 0) {
1886 /* Core will printk when we return error. */
1891 early_param("acpi", parse_acpi
);
1893 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1894 static int __init
parse_pci(char *arg
)
1896 if (arg
&& strcmp(arg
, "noacpi") == 0)
1900 early_param("pci", parse_pci
);
1902 int __init
acpi_mps_check(void)
1904 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1905 /* mptable code is not built-in*/
1906 if (acpi_disabled
|| acpi_noirq
) {
1907 printk(KERN_WARNING
"MPS support code is not built-in.\n"
1908 "Using acpi=off or acpi=noirq or pci=noacpi "
1909 "may have problem\n");
1916 #ifdef CONFIG_X86_IO_APIC
1917 static int __init
parse_acpi_skip_timer_override(char *arg
)
1919 acpi_skip_timer_override
= 1;
1922 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override
);
1924 static int __init
parse_acpi_use_timer_override(char *arg
)
1926 acpi_use_timer_override
= 1;
1929 early_param("acpi_use_timer_override", parse_acpi_use_timer_override
);
1930 #endif /* CONFIG_X86_IO_APIC */
1932 static int __init
setup_acpi_sci(char *s
)
1936 if (!strcmp(s
, "edge"))
1937 acpi_sci_flags
= ACPI_MADT_TRIGGER_EDGE
|
1938 (acpi_sci_flags
& ~ACPI_MADT_TRIGGER_MASK
);
1939 else if (!strcmp(s
, "level"))
1940 acpi_sci_flags
= ACPI_MADT_TRIGGER_LEVEL
|
1941 (acpi_sci_flags
& ~ACPI_MADT_TRIGGER_MASK
);
1942 else if (!strcmp(s
, "high"))
1943 acpi_sci_flags
= ACPI_MADT_POLARITY_ACTIVE_HIGH
|
1944 (acpi_sci_flags
& ~ACPI_MADT_POLARITY_MASK
);
1945 else if (!strcmp(s
, "low"))
1946 acpi_sci_flags
= ACPI_MADT_POLARITY_ACTIVE_LOW
|
1947 (acpi_sci_flags
& ~ACPI_MADT_POLARITY_MASK
);
1952 early_param("acpi_sci", setup_acpi_sci
);
1954 int __acpi_acquire_global_lock(unsigned int *lock
)
1956 unsigned int old
, new, val
;
1959 new = (((old
& ~0x3) + 2) + ((old
>> 1) & 0x1));
1960 val
= cmpxchg(lock
, old
, new);
1961 } while (unlikely (val
!= old
));
1962 return (new < 3) ? -1 : 0;
1965 int __acpi_release_global_lock(unsigned int *lock
)
1967 unsigned int old
, new, val
;
1971 val
= cmpxchg(lock
, old
, new);
1972 } while (unlikely (val
!= old
));