146 lines
4.0 KiB
C
146 lines
4.0 KiB
C
/*
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* acpi_bus.c - ACPI Bus Driver ($Revision: 80 $)
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*
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/acpi.h>
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#include <linux/pci.h>
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#include <linux/dmi.h>
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#include "internal.h"
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struct acpi_device *acpi_root;
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#ifdef CONFIG_X86
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#ifdef CONFIG_ACPI_CUSTOM_DSDT
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static inline int set_copy_dsdt(const struct dmi_system_id *id)
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{
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return 0;
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}
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#else
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static int set_copy_dsdt(const struct dmi_system_id *id)
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{
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printk(KERN_NOTICE "%s detected - "
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"force copy of DSDT to local memory\n", id->ident);
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acpi_gbl_copy_dsdt_locally = 1;
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return 0;
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}
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#endif
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static struct dmi_system_id dsdt_dmi_table[] __initdata = {
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/*
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* Invoke DSDT corruption work-around on all Toshiba Satellite.
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* https://bugzilla.kernel.org/show_bug.cgi?id=14679
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*/
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{
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.callback = set_copy_dsdt,
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.ident = "TOSHIBA Satellite",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
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},
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},
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{}
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};
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#else
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static struct dmi_system_id dsdt_dmi_table[] __initdata = {
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{}
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};
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#endif
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/**
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* acpi_early_init - Initialize ACPICA and populate the ACPI namespace.
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*
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* The ACPI tables are accessible after this, but the handling of events has not
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* been initialized and the global lock is not available yet, so AML should not
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* be executed at this point.
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*
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* Doing this before switching the EFI runtime services to virtual mode allows
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* the EfiBootServices memory to be freed slightly earlier on boot.
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*/
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void __init acpi_early_init(void)
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{
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acpi_status status;
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if (acpi_disabled)
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return;
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printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
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/* It's safe to verify table checksums during late stage */
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acpi_gbl_verify_table_checksum = TRUE;
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/* enable workarounds, unless strict ACPI spec. compliance */
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if (!acpi_strict)
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acpi_gbl_enable_interpreter_slack = TRUE;
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acpi_gbl_permanent_mmap = 1;
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/*
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* If the machine falls into the DMI check table,
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* DSDT will be copied to memory
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*/
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dmi_check_system(dsdt_dmi_table);
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status = acpi_reallocate_root_table();
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if (ACPI_FAILURE(status)) {
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printk(KERN_ERR PREFIX
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"Unable to reallocate ACPI tables\n");
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goto error0;
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}
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status = acpi_initialize_subsystem();
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if (ACPI_FAILURE(status)) {
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printk(KERN_ERR PREFIX
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"Unable to initialize the ACPI Interpreter\n");
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goto error0;
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}
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status = acpi_load_tables();
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if (ACPI_FAILURE(status)) {
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printk(KERN_ERR PREFIX
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"Unable to load the System Description Tables\n");
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goto error0;
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}
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#ifdef CONFIG_X86
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if (!acpi_ioapic) {
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/* compatible (0) means level (3) */
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if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) {
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acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK;
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acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL;
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}
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/* Set PIC-mode SCI trigger type */
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acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt,
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(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
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} else {
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/*
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* now that acpi_gbl_FADT is initialized,
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* update it with result from INT_SRC_OVR parsing
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*/
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acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi;
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}
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#endif
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return;
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error0:
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disable_acpi();
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}
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