source: trunk/packages/xen-3.1/xen-3.1/xen/arch/x86/acpi/boot.c @ 34

/*
 *  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 <xen/config.h>
#include <xen/errno.h>
#include <xen/init.h>
#include <xen/acpi.h>
#include <xen/irq.h>
#include <xen/dmi.h>
#include <asm/fixmap.h>
#include <asm/page.h>
#include <asm/apic.h>
#include <asm/io_apic.h>
#include <asm/apic.h>
#include <asm/io.h>
#include <asm/mpspec.h>
#include <mach_apic.h>
#include <mach_mpparse.h>

int sbf_port;
#define CONFIG_ACPI_PCI

#define BAD_MADT_ENTRY(entry, end) (                                        \
                (!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
                ((acpi_table_entry_header *)entry)->length != sizeof(*entry))

#define PREFIX                  "ACPI: "

#ifdef CONFIG_ACPI_PCI
int acpi_noirq __initdata;      /* skip ACPI IRQ initialization */
int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */
#else
int acpi_noirq __initdata = 1;
int acpi_pci_disabled __initdata = 1;
#endif
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;

/*
 * 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 ((char *) base + offset);
}

#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)
                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 */

#if defined(CONFIG_X86_IO_APIC) /*&& defined(CONFIG_ACPI_INTERPRETER)*/

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;
}

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 (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 */

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 *)(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;

        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;
        }

#if 0/*def      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);
#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);
        }
#endif  /* X86 */

        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_rev2 *fadt = NULL;

        fadt = (struct fadt_descriptor_rev2 *)__acpi_map_table(phys, size);
        if (!fadt) {
                printk(KERN_WARNING PREFIX "Unable to map FADT\n");
                return 0;
        }

#ifdef  CONFIG_ACPI_INTERPRETER
        /* 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;
#endif

#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 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;
        }
#endif
        /*
         * 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 */

#if defined(CONFIG_X86_IO_APIC) /*&& defined(CONFIG_ACPI_INTERPRETER)*/
/*
 * 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;
        }

#ifdef CONFIG_ACPI_INTERPRETER
        /*
         * 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, 0, 0);
#endif

        /* 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 && CONFIG_ACPI_INTERPRETER) */


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;
                        generic_bigsmp_probe();
 
                        /*
                         * 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;
}

extern int acpi_force;

#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) {
                extern int acpi_force;

                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;
}