asgardius/android_kernel_motorola_sm6225
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
android_kernel_motorola_sm6225/arch/i386/kernel/acpi/boot.c
Kimball Murray 281ea49b0c ACPI: SCI interrupt source override 
The Linux group at Stratus Technologies has come across an issue with SCI
routing under ACPI.  We were bitten by this when we made an x86_64 platform
whose BIOS provides an Interrupt Source Override for the SCI itself.
Apparently the override has no effect for the System Control Interrupt, and
this appears to be because of the way the SCI is setup in the ACPI code.
It does not handle the case where busirq != gsi.

The code that sets up the SCI routing assumes that bus irq == global irq.
So there is simply no provision for telling it otherwise.  The attached
patch provides this mechanism.

This patch provided by David Bulkow, was tested on an i386 platform, which
does not use the SCI override, and also on an x86_64 platform which does
use an override.

Signed-off-by: David Bulkow <david.bulkow@stratus.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14 02:01:26 -04:00

1321 lines
31 KiB
C
Raw Blame History

/*
* boot.c - Architecture-Specific Low-Level ACPI Boot Support
*
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
* Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/efi.h>
#include <linux/cpumask.h>
#include <linux/module.h>
#include <linux/dmi.h>
#include <linux/irq.h>
#include <linux/bootmem.h>
#include <linux/ioport.h>
#include <asm/pgtable.h>
#include <asm/io_apic.h>
#include <asm/apic.h>
#include <asm/io.h>
#include <asm/mpspec.h>
static int __initdata acpi_force = 0;
#ifdef CONFIG_ACPI
int acpi_disabled = 0;
#else
int acpi_disabled = 1;
#endif
EXPORT_SYMBOL(acpi_disabled);
#ifdef CONFIG_X86_64
#include <asm/proto.h>
static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; }
#else /* X86 */
#ifdef CONFIG_X86_LOCAL_APIC
#include <mach_apic.h>
#include <mach_mpparse.h>
#endif /* CONFIG_X86_LOCAL_APIC */
#endif /* X86 */
#define BAD_MADT_ENTRY(entry, end) ( \
(!entry) || (unsigned long)entry + sizeof(*entry) > end || \
((acpi_table_entry_header *)entry)->length < sizeof(*entry))
#define PREFIX "ACPI: "
int acpi_noirq __initdata; /* skip ACPI IRQ initialization */
int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */
int acpi_ht __initdata = 1; /* enable HT */
int acpi_lapic;
int acpi_ioapic;
int acpi_strict;
EXPORT_SYMBOL(acpi_strict);
acpi_interrupt_flags acpi_sci_flags __initdata;
int acpi_sci_override_gsi __initdata;
int acpi_skip_timer_override __initdata;
#ifdef CONFIG_X86_LOCAL_APIC
static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
#endif
#ifndef __HAVE_ARCH_CMPXCHG
#warning ACPI uses CMPXCHG, i486 and later hardware
#endif
#define MAX_MADT_ENTRIES 256
u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
{[0 ... MAX_MADT_ENTRIES - 1] = 0xff };
EXPORT_SYMBOL(x86_acpiid_to_apicid);
/* --------------------------------------------------------------------------
Boot-time Configuration
-------------------------------------------------------------------------- */
/*
* The default interrupt routing model is PIC (8259). This gets
* overriden if IOAPICs are enumerated (below).
*/
enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
#ifdef CONFIG_X86_64
/* rely on all ACPI tables being in the direct mapping */
char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
{
if (!phys_addr || !size)
return NULL;
if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE)
return __va(phys_addr);
return NULL;
}
#else
/*
* Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
* to map the target physical address. The problem is that set_fixmap()
* provides a single page, and it is possible that the page is not
* sufficient.
* By using this area, we can map up to MAX_IO_APICS pages temporarily,
* i.e. until the next __va_range() call.
*
* Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
* from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
* count idx down while incrementing the phys address.
*/
char *__acpi_map_table(unsigned long phys, unsigned long size)
{
unsigned long base, offset, mapped_size;
int idx;
if (phys + size < 8 * 1024 * 1024)
return __va(phys);
offset = phys & (PAGE_SIZE - 1);
mapped_size = PAGE_SIZE - offset;
set_fixmap(FIX_ACPI_END, phys);
base = fix_to_virt(FIX_ACPI_END);
/*
* Most cases can be covered by the below.
*/
idx = FIX_ACPI_END;
while (mapped_size < size) {
if (--idx < FIX_ACPI_BEGIN)
return NULL; /* cannot handle this */
phys += PAGE_SIZE;
set_fixmap(idx, phys);
mapped_size += PAGE_SIZE;
}
return ((unsigned char *)base + offset);
}
#endif
#ifdef CONFIG_PCI_MMCONFIG
/* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
struct acpi_table_mcfg_config *pci_mmcfg_config;
int pci_mmcfg_config_num;
int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
{
struct acpi_table_mcfg *mcfg;
unsigned long i;
int config_size;
if (!phys_addr || !size)
return -EINVAL;
mcfg = (struct acpi_table_mcfg *)__acpi_map_table(phys_addr, size);
if (!mcfg) {
printk(KERN_WARNING PREFIX "Unable to map MCFG\n");
return -ENODEV;
}
/* how many config structures do we have */
pci_mmcfg_config_num = 0;
i = size - sizeof(struct acpi_table_mcfg);
while (i >= sizeof(struct acpi_table_mcfg_config)) {
++pci_mmcfg_config_num;
i -= sizeof(struct acpi_table_mcfg_config);
};
if (pci_mmcfg_config_num == 0) {
printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
return -ENODEV;
}
config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
if (!pci_mmcfg_config) {
printk(KERN_WARNING PREFIX
"No memory for MCFG config tables\n");
return -ENOMEM;
}
memcpy(pci_mmcfg_config, &mcfg->config, config_size);
for (i = 0; i < pci_mmcfg_config_num; ++i) {
if (mcfg->config[i].base_reserved) {
printk(KERN_ERR PREFIX
"MMCONFIG not in low 4GB of memory\n");
kfree(pci_mmcfg_config);
pci_mmcfg_config_num = 0;
return -ENODEV;
}
}
return 0;
}
#endif /* CONFIG_PCI_MMCONFIG */
#ifdef CONFIG_X86_LOCAL_APIC
static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
{
struct acpi_table_madt *madt = NULL;
if (!phys_addr || !size || !cpu_has_apic)
return -EINVAL;
madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size);
if (!madt) {
printk(KERN_WARNING PREFIX "Unable to map MADT\n");
return -ENODEV;
}
if (madt->lapic_address) {
acpi_lapic_addr = (u64) madt->lapic_address;
printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
madt->lapic_address);
}
acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
return 0;
}
static int __init
acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
{
struct acpi_table_lapic *processor = NULL;
processor = (struct acpi_table_lapic *)header;
if (BAD_MADT_ENTRY(processor, end))
return -EINVAL;
acpi_table_print_madt_entry(header);
/* Record local apic id only when enabled */
if (processor->flags.enabled)
x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
/*
* We need to register disabled CPU as well to permit
* counting disabled CPUs. This allows us to size
* cpus_possible_map more accurately, to permit
* to not preallocating memory for all NR_CPUS
* when we use CPU hotplug.
*/
mp_register_lapic(processor->id, /* APIC ID */
processor->flags.enabled); /* Enabled? */
return 0;
}
static int __init
acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header,
const unsigned long end)
{
struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr *)header;
if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
return -EINVAL;
acpi_lapic_addr = lapic_addr_ovr->address;
return 0;
}
static int __init
acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end)
{
struct acpi_table_lapic_nmi *lapic_nmi = NULL;
lapic_nmi = (struct acpi_table_lapic_nmi *)header;
if (BAD_MADT_ENTRY(lapic_nmi, end))
return -EINVAL;
acpi_table_print_madt_entry(header);
if (lapic_nmi->lint != 1)
printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
return 0;
}
#endif /*CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_X86_IO_APIC
static int __init
acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end)
{
struct acpi_table_ioapic *ioapic = NULL;
ioapic = (struct acpi_table_ioapic *)header;
if (BAD_MADT_ENTRY(ioapic, end))
return -EINVAL;
acpi_table_print_madt_entry(header);
mp_register_ioapic(ioapic->id,
ioapic->address, ioapic->global_irq_base);
return 0;
}
/*
* Parse Interrupt Source Override for the ACPI SCI
*/
static void acpi_sci_ioapic_setup(u32 bus_irq, u32 gsi, u16 polarity, u16 trigger)
{
if (trigger == 0) /* compatible SCI trigger is level */
trigger = 3;
if (polarity == 0) /* compatible SCI polarity is low */
polarity = 3;
/* Command-line over-ride via acpi_sci= */
if (acpi_sci_flags.trigger)
trigger = acpi_sci_flags.trigger;
if (acpi_sci_flags.polarity)
polarity = acpi_sci_flags.polarity;
/*
* mp_config_acpi_legacy_irqs() already setup IRQs < 16
* If GSI is < 16, this will update its flags,
* else it will create a new mp_irqs[] entry.
*/
mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
/*
* stash over-ride to indicate we've been here
* and for later update of acpi_fadt
*/
acpi_sci_override_gsi = bus_irq;
return;
}
static int __init
acpi_parse_int_src_ovr(acpi_table_entry_header * header,
const unsigned long end)
{
struct acpi_table_int_src_ovr *intsrc = NULL;
intsrc = (struct acpi_table_int_src_ovr *)header;
if (BAD_MADT_ENTRY(intsrc, end))
return -EINVAL;
acpi_table_print_madt_entry(header);
if (intsrc->bus_irq == acpi_fadt.sci_int) {
acpi_sci_ioapic_setup(intsrc->bus_irq, intsrc->global_irq,
intsrc->flags.polarity,
intsrc->flags.trigger);
return 0;
}
if (acpi_skip_timer_override &&
intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
return 0;
}
mp_override_legacy_irq(intsrc->bus_irq,
intsrc->flags.polarity,
intsrc->flags.trigger, intsrc->global_irq);
return 0;
}
static int __init
acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end)
{
struct acpi_table_nmi_src *nmi_src = NULL;
nmi_src = (struct acpi_table_nmi_src *)header;
if (BAD_MADT_ENTRY(nmi_src, end))
return -EINVAL;
acpi_table_print_madt_entry(header);
/* TBD: Support nimsrc entries? */
return 0;
}
#endif /* CONFIG_X86_IO_APIC */
/*
* acpi_pic_sci_set_trigger()
*
* use ELCR to set PIC-mode trigger type for SCI
*
* If a PIC-mode SCI is not recognized or gives spurious IRQ7's
* it may require Edge Trigger -- use "acpi_sci=edge"
*
* Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
* for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
* ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
* ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
*/
void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
{
unsigned int mask = 1 << irq;
unsigned int old, new;
/* Real old ELCR mask */
old = inb(0x4d0) | (inb(0x4d1) << 8);
/*
* If we use ACPI to set PCI irq's, then we should clear ELCR
* since we will set it correctly as we enable the PCI irq
* routing.
*/
new = acpi_noirq ? old : 0;
/*
* Update SCI information in the ELCR, it isn't in the PCI
* routing tables..
*/
switch (trigger) {
case 1: /* Edge - clear */
new &= ~mask;
break;
case 3: /* Level - set */
new |= mask;
break;
}
if (old == new)
return;
printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
outb(new, 0x4d0);
outb(new >> 8, 0x4d1);
}
int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
{
*irq = gsi;
return 0;
}
/*
* success: return IRQ number (>=0)
* failure: return < 0
*/
int acpi_register_gsi(u32 gsi, int triggering, int polarity)
{
unsigned int irq;
unsigned int plat_gsi = gsi;
#ifdef CONFIG_PCI
/*
* Make sure all (legacy) PCI IRQs are set as level-triggered.
*/
if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
extern void eisa_set_level_irq(unsigned int irq);
if (triggering == ACPI_LEVEL_SENSITIVE)
eisa_set_level_irq(gsi);
}
#endif
#ifdef CONFIG_X86_IO_APIC
if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
plat_gsi = mp_register_gsi(gsi, triggering, polarity);
}
#endif
acpi_gsi_to_irq(plat_gsi, &irq);
return irq;
}
EXPORT_SYMBOL(acpi_register_gsi);
/*
* ACPI based hotplug support for CPU
*/
#ifdef CONFIG_ACPI_HOTPLUG_CPU
int acpi_map_lsapic(acpi_handle handle, int *pcpu)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
struct acpi_table_lapic *lapic;
cpumask_t tmp_map, new_map;
u8 physid;
int cpu;
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
return -EINVAL;
if (!buffer.length || !buffer.pointer)
return -EINVAL;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_BUFFER ||
obj->buffer.length < sizeof(*lapic)) {
kfree(buffer.pointer);
return -EINVAL;
}
lapic = (struct acpi_table_lapic *)obj->buffer.pointer;
if ((lapic->header.type != ACPI_MADT_LAPIC) ||
(!lapic->flags.enabled)) {
kfree(buffer.pointer);
return -EINVAL;
}
physid = lapic->id;
kfree(buffer.pointer);
buffer.length = ACPI_ALLOCATE_BUFFER;
buffer.pointer = NULL;
tmp_map = cpu_present_map;
mp_register_lapic(physid, lapic->flags.enabled);
/*
* If mp_register_lapic successfully generates a new logical cpu
* number, then the following will get us exactly what was mapped
*/
cpus_andnot(new_map, cpu_present_map, tmp_map);
if (cpus_empty(new_map)) {
printk ("Unable to map lapic to logical cpu number\n");
return -EINVAL;
}
cpu = first_cpu(new_map);
*pcpu = cpu;
return 0;
}
EXPORT_SYMBOL(acpi_map_lsapic);
int acpi_unmap_lsapic(int cpu)
{
int i;
for_each_possible_cpu(i) {
if (x86_acpiid_to_apicid[i] == x86_cpu_to_apicid[cpu]) {
x86_acpiid_to_apicid[i] = -1;
break;
}
}
x86_cpu_to_apicid[cpu] = -1;
cpu_clear(cpu, cpu_present_map);
num_processors--;
return (0);
}
EXPORT_SYMBOL(acpi_unmap_lsapic);
#endif /* CONFIG_ACPI_HOTPLUG_CPU */
int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
{
/* TBD */
return -EINVAL;
}
EXPORT_SYMBOL(acpi_register_ioapic);
int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
{
/* TBD */
return -EINVAL;
}
EXPORT_SYMBOL(acpi_unregister_ioapic);
static unsigned long __init
acpi_scan_rsdp(unsigned long start, unsigned long length)
{
unsigned long offset = 0;
unsigned long sig_len = sizeof("RSD PTR ") - 1;
/*
* Scan all 16-byte boundaries of the physical memory region for the
* RSDP signature.
*/
for (offset = 0; offset < length; offset += 16) {
if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len))
continue;
return (start + offset);
}
return 0;
}
static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size)
{
struct acpi_table_sbf *sb;
if (!phys_addr || !size)
return -EINVAL;
sb = (struct acpi_table_sbf *)__acpi_map_table(phys_addr, size);
if (!sb) {
printk(KERN_WARNING PREFIX "Unable to map SBF\n");
return -ENODEV;
}
sbf_port = sb->sbf_cmos; /* Save CMOS port */
return 0;
}
#ifdef CONFIG_HPET_TIMER
static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
{
struct acpi_table_hpet *hpet_tbl;
struct resource *hpet_res;
resource_size_t res_start;
if (!phys || !size)
return -EINVAL;
hpet_tbl = (struct acpi_table_hpet *)__acpi_map_table(phys, size);
if (!hpet_tbl) {
printk(KERN_WARNING PREFIX "Unable to map HPET\n");
return -ENODEV;
}
if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
printk(KERN_WARNING PREFIX "HPET timers must be located in "
"memory.\n");
return -1;
}
#define HPET_RESOURCE_NAME_SIZE 9
hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
if (hpet_res) {
memset(hpet_res, 0, sizeof(*hpet_res));
hpet_res->name = (void *)&hpet_res[1];
hpet_res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE,
"HPET %u", hpet_tbl->number);
hpet_res->end = (1 * 1024) - 1;
}
#ifdef CONFIG_X86_64
vxtime.hpet_address = hpet_tbl->addr.addrl |
((long)hpet_tbl->addr.addrh << 32);
printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
hpet_tbl->id, vxtime.hpet_address);
res_start = vxtime.hpet_address;
#else /* X86 */
{
extern unsigned long hpet_address;
hpet_address = hpet_tbl->addr.addrl;
printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
hpet_tbl->id, hpet_address);
res_start = hpet_address;
}
#endif /* X86 */
if (hpet_res) {
hpet_res->start = res_start;
hpet_res->end += res_start;
insert_resource(&iomem_resource, hpet_res);
}
return 0;
}
#else
#define acpi_parse_hpet NULL
#endif
#ifdef CONFIG_X86_PM_TIMER
extern u32 pmtmr_ioport;
#endif
static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
{
struct fadt_descriptor *fadt = NULL;
fadt = (struct fadt_descriptor *)__acpi_map_table(phys, size);
if (!fadt) {
printk(KERN_WARNING PREFIX "Unable to map FADT\n");
return 0;
}
/* initialize sci_int early for INT_SRC_OVR MADT parsing */
acpi_fadt.sci_int = fadt->sci_int;
/* initialize rev and apic_phys_dest_mode for x86_64 genapic */
acpi_fadt.revision = fadt->revision;
acpi_fadt.force_apic_physical_destination_mode =
fadt->force_apic_physical_destination_mode;
#ifdef CONFIG_X86_PM_TIMER
/* detect the location of the ACPI PM Timer */
if (fadt->revision >= FADT2_REVISION_ID) {
/* FADT rev. 2 */
if (fadt->xpm_tmr_blk.address_space_id !=
ACPI_ADR_SPACE_SYSTEM_IO)
return 0;
pmtmr_ioport = fadt->xpm_tmr_blk.address;
/*
* "X" fields are optional extensions to the original V1.0
* fields, so we must selectively expand V1.0 fields if the
* corresponding X field is zero.
*/
if (!pmtmr_ioport)
pmtmr_ioport = fadt->V1_pm_tmr_blk;
} else {
/* FADT rev. 1 */
pmtmr_ioport = fadt->V1_pm_tmr_blk;
}
if (pmtmr_ioport)
printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
pmtmr_ioport);
#endif
return 0;
}
unsigned long __init acpi_find_rsdp(void)
{
unsigned long rsdp_phys = 0;
if (efi_enabled) {
if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
return efi.acpi20;
else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
return efi.acpi;
}
/*
* Scan memory looking for the RSDP signature. First search EBDA (low
* memory) paragraphs and then search upper memory (E0000-FFFFF).
*/
rsdp_phys = acpi_scan_rsdp(0, 0x400);
if (!rsdp_phys)
rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000);
return rsdp_phys;
}
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Parse LAPIC entries in MADT
* returns 0 on success, < 0 on error
*/
static int __init acpi_parse_madt_lapic_entries(void)
{
int count;
if (!cpu_has_apic)
return -ENODEV;
/*
* Note that the LAPIC address is obtained from the MADT (32-bit value)
* and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
*/
count =
acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR,
acpi_parse_lapic_addr_ovr, 0);
if (count < 0) {
printk(KERN_ERR PREFIX
"Error parsing LAPIC address override entry\n");
return count;
}
mp_register_lapic_address(acpi_lapic_addr);
count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
MAX_APICS);
if (!count) {
printk(KERN_ERR PREFIX "No LAPIC entries present\n");
/* TBD: Cleanup to allow fallback to MPS */
return -ENODEV;
} else if (count < 0) {
printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
count =
acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0);
if (count < 0) {
printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
return 0;
}
#endif /* CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_X86_IO_APIC
/*
* Parse IOAPIC related entries in MADT
* returns 0 on success, < 0 on error
*/
static int __init acpi_parse_madt_ioapic_entries(void)
{
int count;
/*
* ACPI interpreter is required to complete interrupt setup,
* so if it is off, don't enumerate the io-apics with ACPI.
* If MPS is present, it will handle them,
* otherwise the system will stay in PIC mode
*/
if (acpi_disabled || acpi_noirq) {
return -ENODEV;
}
if (!cpu_has_apic)
return -ENODEV;
/*
* if "noapic" boot option, don't look for IO-APICs
*/
if (skip_ioapic_setup) {
printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
"due to 'noapic' option.\n");
return -ENODEV;
}
count =
acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic,
MAX_IO_APICS);
if (!count) {
printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
return -ENODEV;
} else if (count < 0) {
printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
return count;
}
count =
acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr,
NR_IRQ_VECTORS);
if (count < 0) {
printk(KERN_ERR PREFIX
"Error parsing interrupt source overrides entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
/*
* If BIOS did not supply an INT_SRC_OVR for the SCI
* pretend we got one so we can set the SCI flags.
*/
if (!acpi_sci_override_gsi)
acpi_sci_ioapic_setup(acpi_fadt.sci_int, acpi_fadt.sci_int, 0, 0);
/* Fill in identity legacy mapings where no override */
mp_config_acpi_legacy_irqs();
count =
acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src,
NR_IRQ_VECTORS);
if (count < 0) {
printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
return 0;
}
#else
static inline int acpi_parse_madt_ioapic_entries(void)
{
return -1;
}
#endif /* !CONFIG_X86_IO_APIC */
static void __init acpi_process_madt(void)
{
#ifdef CONFIG_X86_LOCAL_APIC
int count, error;
count = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
if (count >= 1) {
/*
* Parse MADT LAPIC entries
*/
error = acpi_parse_madt_lapic_entries();
if (!error) {
acpi_lapic = 1;
#ifdef CONFIG_X86_GENERICARCH
generic_bigsmp_probe();
#endif
/*
* Parse MADT IO-APIC entries
*/
error = acpi_parse_madt_ioapic_entries();
if (!error) {
acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
acpi_irq_balance_set(NULL);
acpi_ioapic = 1;
smp_found_config = 1;
clustered_apic_check();
}
}
if (error == -EINVAL) {
/*
* Dell Precision Workstation 410, 610 come here.
*/
printk(KERN_ERR PREFIX
"Invalid BIOS MADT, disabling ACPI\n");
disable_acpi();
}
}
#endif
return;
}
#ifdef __i386__
static int __init disable_acpi_irq(struct dmi_system_id *d)
{
if (!acpi_force) {
printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
d->ident);
acpi_noirq_set();
}
return 0;
}
static int __init disable_acpi_pci(struct dmi_system_id *d)
{
if (!acpi_force) {
printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
d->ident);
acpi_disable_pci();
}
return 0;
}
static int __init dmi_disable_acpi(struct dmi_system_id *d)
{
if (!acpi_force) {
printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
disable_acpi();
} else {
printk(KERN_NOTICE
"Warning: DMI blacklist says broken, but acpi forced\n");
}
return 0;
}
/*
* Limit ACPI to CPU enumeration for HT
*/
static int __init force_acpi_ht(struct dmi_system_id *d)
{
if (!acpi_force) {
printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
d->ident);
disable_acpi();
acpi_ht = 1;
} else {
printk(KERN_NOTICE
"Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
}
return 0;
}
/*
* If your system is blacklisted here, but you find that acpi=force
* works for you, please contact acpi-devel@sourceforge.net
*/
static struct dmi_system_id __initdata acpi_dmi_table[] = {
/*
* Boxes that need ACPI disabled
*/
{
.callback = dmi_disable_acpi,
.ident = "IBM Thinkpad",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
},
},
/*
* Boxes that need acpi=ht
*/
{
.callback = force_acpi_ht,
.ident = "FSC Primergy T850",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
},
},
{
.callback = force_acpi_ht,
.ident = "DELL GX240",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
},
},
{
.callback = force_acpi_ht,
.ident = "HP VISUALIZE NT Workstation",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
},
},
{
.callback = force_acpi_ht,
.ident = "Compaq Workstation W8000",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
},
},
{
.callback = force_acpi_ht,
.ident = "ASUS P4B266",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
},
},
{
.callback = force_acpi_ht,
.ident = "ASUS P2B-DS",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
},
},
{
.callback = force_acpi_ht,
.ident = "ASUS CUR-DLS",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
},
},
{
.callback = force_acpi_ht,
.ident = "ABIT i440BX-W83977",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
},
},
{
.callback = force_acpi_ht,
.ident = "IBM Bladecenter",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
},
},
{
.callback = force_acpi_ht,
.ident = "IBM eServer xSeries 360",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
},
},
{
.callback = force_acpi_ht,
.ident = "IBM eserver xSeries 330",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
},
},
{
.callback = force_acpi_ht,
.ident = "IBM eserver xSeries 440",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
},
},
/*
* Boxes that need ACPI PCI IRQ routing disabled
*/
{
.callback = disable_acpi_irq,
.ident = "ASUS A7V",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
/* newer BIOS, Revision 1011, does work */
DMI_MATCH(DMI_BIOS_VERSION,
"ASUS A7V ACPI BIOS Revision 1007"),
},
},
/*
* Boxes that need ACPI PCI IRQ routing and PCI scan disabled
*/
{ /* _BBN 0 bug */
.callback = disable_acpi_pci,
.ident = "ASUS PR-DLS",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
DMI_MATCH(DMI_BIOS_VERSION,
"ASUS PR-DLS ACPI BIOS Revision 1010"),
DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
},
},
{
.callback = disable_acpi_pci,
.ident = "Acer TravelMate 36x Laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
},
},
{}
};
#endif /* __i386__ */
/*
* acpi_boot_table_init() and acpi_boot_init()
* called from setup_arch(), always.
* 1. checksums all tables
* 2. enumerates lapics
* 3. enumerates io-apics
*
* acpi_table_init() is separate to allow reading SRAT without
* other side effects.
*
* side effects of acpi_boot_init:
* acpi_lapic = 1 if LAPIC found
* acpi_ioapic = 1 if IOAPIC found
* if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
* if acpi_blacklisted() acpi_disabled = 1;
* acpi_irq_model=...
* ...
*
* return value: (currently ignored)
* 0: success
* !0: failure
*/
int __init acpi_boot_table_init(void)
{
int error;
#ifdef __i386__
dmi_check_system(acpi_dmi_table);
#endif
/*
* If acpi_disabled, bail out
* One exception: acpi=ht continues far enough to enumerate LAPICs
*/
if (acpi_disabled && !acpi_ht)
return 1;
/*
* Initialize the ACPI boot-time table parser.
*/
error = acpi_table_init();
if (error) {
disable_acpi();
return error;
}
acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
/*
* blacklist may disable ACPI entirely
*/
error = acpi_blacklisted();
if (error) {
if (acpi_force) {
printk(KERN_WARNING PREFIX "acpi=force override\n");
} else {
printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
disable_acpi();
return error;
}
}
return 0;
}
int __init acpi_boot_init(void)
{
/*
* If acpi_disabled, bail out
* One exception: acpi=ht continues far enough to enumerate LAPICs
*/
if (acpi_disabled && !acpi_ht)
return 1;
acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
/*
* set sci_int and PM timer address
*/
acpi_table_parse(ACPI_FADT, acpi_parse_fadt);
/*
* Process the Multiple APIC Description Table (MADT), if present
*/
acpi_process_madt();
acpi_table_parse(ACPI_HPET, acpi_parse_hpet);
return 0;
}
static int __init parse_acpi(char *arg)
{
if (!arg)
return -EINVAL;
/* "acpi=off" disables both ACPI table parsing and interpreter */
if (strcmp(arg, "off") == 0) {
disable_acpi();
}
/* acpi=force to over-ride black-list */
else if (strcmp(arg, "force") == 0) {
acpi_force = 1;
acpi_ht = 1;
acpi_disabled = 0;
}
/* acpi=strict disables out-of-spec workarounds */
else if (strcmp(arg, "strict") == 0) {
acpi_strict = 1;
}
/* Limit ACPI just to boot-time to enable HT */
else if (strcmp(arg, "ht") == 0) {
if (!acpi_force)
disable_acpi();
acpi_ht = 1;
}
/* "acpi=noirq" disables ACPI interrupt routing */
else if (strcmp(arg, "noirq") == 0) {
acpi_noirq_set();
} else {
/* Core will printk when we return error. */
return -EINVAL;
}
return 0;
}
early_param("acpi", parse_acpi);
/* FIXME: Using pci= for an ACPI parameter is a travesty. */
static int __init parse_pci(char *arg)
{
if (arg && strcmp(arg, "noacpi") == 0)
acpi_disable_pci();
return 0;
}
early_param("pci", parse_pci);
#ifdef CONFIG_X86_IO_APIC
static int __init parse_acpi_skip_timer_override(char *arg)
{
acpi_skip_timer_override = 1;
return 0;
}
early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
#endif /* CONFIG_X86_IO_APIC */
static int __init setup_acpi_sci(char *s)
{
if (!s)
return -EINVAL;
if (!strcmp(s, "edge"))
acpi_sci_flags.trigger = 1;
else if (!strcmp(s, "level"))
acpi_sci_flags.trigger = 3;
else if (!strcmp(s, "high"))
acpi_sci_flags.polarity = 1;
else if (!strcmp(s, "low"))
acpi_sci_flags.polarity = 3;
else
return -EINVAL;
return 0;
}
early_param("acpi_sci", setup_acpi_sci);
Reference in a new issue View git blame Copy permalink