1345 lines
31 KiB
C
1345 lines
31 KiB
C
/*
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* boot.c - Architecture-Specific Low-Level ACPI Boot Support
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*
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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* Copyright (C) 2001 Jun Nakajima <jun.nakajima@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
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* (at 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <linux/efi.h>
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#include <linux/cpumask.h>
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#include <linux/module.h>
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#include <linux/dmi.h>
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#include <linux/irq.h>
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#include <linux/bootmem.h>
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#include <linux/ioport.h>
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#include <asm/pgtable.h>
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#include <asm/io_apic.h>
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#include <asm/apic.h>
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#include <asm/io.h>
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#include <asm/mpspec.h>
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static int __initdata acpi_force = 0;
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#ifdef CONFIG_ACPI
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int acpi_disabled = 0;
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#else
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int acpi_disabled = 1;
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#endif
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EXPORT_SYMBOL(acpi_disabled);
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#ifdef CONFIG_X86_64
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#include <asm/proto.h>
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static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; }
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#else /* X86 */
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#ifdef CONFIG_X86_LOCAL_APIC
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#include <mach_apic.h>
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#include <mach_mpparse.h>
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#endif /* CONFIG_X86_LOCAL_APIC */
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#endif /* X86 */
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#define BAD_MADT_ENTRY(entry, end) ( \
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(!entry) || (unsigned long)entry + sizeof(*entry) > end || \
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((acpi_table_entry_header *)entry)->length < sizeof(*entry))
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#define PREFIX "ACPI: "
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int acpi_noirq; /* skip ACPI IRQ initialization */
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int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */
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int acpi_ht __initdata = 1; /* enable HT */
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int acpi_lapic;
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int acpi_ioapic;
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int acpi_strict;
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EXPORT_SYMBOL(acpi_strict);
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acpi_interrupt_flags acpi_sci_flags __initdata;
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int acpi_sci_override_gsi __initdata;
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int acpi_skip_timer_override __initdata;
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int acpi_use_timer_override __initdata;
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#ifdef CONFIG_X86_LOCAL_APIC
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static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
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#endif
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#ifndef __HAVE_ARCH_CMPXCHG
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#warning ACPI uses CMPXCHG, i486 and later hardware
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#endif
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#define MAX_MADT_ENTRIES 256
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u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
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{[0 ... MAX_MADT_ENTRIES - 1] = 0xff };
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EXPORT_SYMBOL(x86_acpiid_to_apicid);
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/* --------------------------------------------------------------------------
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Boot-time Configuration
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-------------------------------------------------------------------------- */
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/*
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* The default interrupt routing model is PIC (8259). This gets
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* overriden if IOAPICs are enumerated (below).
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*/
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enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
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#ifdef CONFIG_X86_64
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/* rely on all ACPI tables being in the direct mapping */
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char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
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{
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if (!phys_addr || !size)
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return NULL;
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if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE)
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return __va(phys_addr);
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return NULL;
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}
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#else
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/*
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* Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
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* to map the target physical address. The problem is that set_fixmap()
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* provides a single page, and it is possible that the page is not
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* sufficient.
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* By using this area, we can map up to MAX_IO_APICS pages temporarily,
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* i.e. until the next __va_range() call.
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*
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* Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
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* from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
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* count idx down while incrementing the phys address.
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*/
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char *__acpi_map_table(unsigned long phys, unsigned long size)
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{
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unsigned long base, offset, mapped_size;
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int idx;
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if (phys + size < 8 * 1024 * 1024)
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return __va(phys);
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offset = phys & (PAGE_SIZE - 1);
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mapped_size = PAGE_SIZE - offset;
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set_fixmap(FIX_ACPI_END, phys);
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base = fix_to_virt(FIX_ACPI_END);
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/*
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* Most cases can be covered by the below.
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*/
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idx = FIX_ACPI_END;
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while (mapped_size < size) {
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if (--idx < FIX_ACPI_BEGIN)
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return NULL; /* cannot handle this */
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phys += PAGE_SIZE;
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set_fixmap(idx, phys);
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mapped_size += PAGE_SIZE;
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}
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return ((unsigned char *)base + offset);
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}
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#endif
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#ifdef CONFIG_PCI_MMCONFIG
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/* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
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struct acpi_table_mcfg_config *pci_mmcfg_config;
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int pci_mmcfg_config_num;
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int __init acpi_parse_mcfg(struct acpi_table_header *header)
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{
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struct acpi_table_mcfg *mcfg;
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unsigned long i;
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int config_size;
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if (!header)
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return -EINVAL;
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mcfg = (struct acpi_table_mcfg *)header;
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if (!mcfg) {
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printk(KERN_WARNING PREFIX "Unable to map MCFG\n");
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return -ENODEV;
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}
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/* how many config structures do we have */
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pci_mmcfg_config_num = 0;
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i = header->length - sizeof(struct acpi_table_mcfg);
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while (i >= sizeof(struct acpi_table_mcfg_config)) {
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++pci_mmcfg_config_num;
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i -= sizeof(struct acpi_table_mcfg_config);
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};
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if (pci_mmcfg_config_num == 0) {
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printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
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return -ENODEV;
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}
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config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
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pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
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if (!pci_mmcfg_config) {
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printk(KERN_WARNING PREFIX
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"No memory for MCFG config tables\n");
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return -ENOMEM;
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}
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memcpy(pci_mmcfg_config, &mcfg->config, config_size);
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for (i = 0; i < pci_mmcfg_config_num; ++i) {
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if (mcfg->config[i].base_reserved) {
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printk(KERN_ERR PREFIX
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"MMCONFIG not in low 4GB of memory\n");
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kfree(pci_mmcfg_config);
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pci_mmcfg_config_num = 0;
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return -ENODEV;
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}
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}
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return 0;
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}
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#endif /* CONFIG_PCI_MMCONFIG */
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#ifdef CONFIG_X86_LOCAL_APIC
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static int __init acpi_parse_madt(struct acpi_table_header *header)
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{
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struct acpi_table_madt *madt = NULL;
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if (!header|| !cpu_has_apic)
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return -EINVAL;
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madt = (struct acpi_table_madt *)header;
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if (!madt) {
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printk(KERN_WARNING PREFIX "Unable to map MADT\n");
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return -ENODEV;
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}
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if (madt->lapic_address) {
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acpi_lapic_addr = (u64) madt->lapic_address;
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printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
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madt->lapic_address);
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}
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acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
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return 0;
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}
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static int __init
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acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
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{
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struct acpi_table_lapic *processor = NULL;
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processor = (struct acpi_table_lapic *)header;
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if (BAD_MADT_ENTRY(processor, end))
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return -EINVAL;
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acpi_table_print_madt_entry(header);
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/* Record local apic id only when enabled */
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if (processor->flags.enabled)
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x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
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/*
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* We need to register disabled CPU as well to permit
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* counting disabled CPUs. This allows us to size
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* cpus_possible_map more accurately, to permit
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* to not preallocating memory for all NR_CPUS
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* when we use CPU hotplug.
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*/
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mp_register_lapic(processor->id, /* APIC ID */
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processor->flags.enabled); /* Enabled? */
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return 0;
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}
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static int __init
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acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header,
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const unsigned long end)
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{
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struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
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lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr *)header;
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if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
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return -EINVAL;
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acpi_lapic_addr = lapic_addr_ovr->address;
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return 0;
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}
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static int __init
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acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end)
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{
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struct acpi_table_lapic_nmi *lapic_nmi = NULL;
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lapic_nmi = (struct acpi_table_lapic_nmi *)header;
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if (BAD_MADT_ENTRY(lapic_nmi, end))
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return -EINVAL;
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acpi_table_print_madt_entry(header);
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if (lapic_nmi->lint != 1)
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printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
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return 0;
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}
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#endif /*CONFIG_X86_LOCAL_APIC */
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#ifdef CONFIG_X86_IO_APIC
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static int __init
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acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end)
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{
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struct acpi_table_ioapic *ioapic = NULL;
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ioapic = (struct acpi_table_ioapic *)header;
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if (BAD_MADT_ENTRY(ioapic, end))
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return -EINVAL;
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acpi_table_print_madt_entry(header);
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mp_register_ioapic(ioapic->id,
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ioapic->address, ioapic->global_irq_base);
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return 0;
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}
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/*
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* Parse Interrupt Source Override for the ACPI SCI
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*/
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static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
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{
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if (trigger == 0) /* compatible SCI trigger is level */
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trigger = 3;
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if (polarity == 0) /* compatible SCI polarity is low */
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polarity = 3;
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/* Command-line over-ride via acpi_sci= */
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if (acpi_sci_flags.trigger)
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trigger = acpi_sci_flags.trigger;
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if (acpi_sci_flags.polarity)
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polarity = acpi_sci_flags.polarity;
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/*
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* mp_config_acpi_legacy_irqs() already setup IRQs < 16
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* If GSI is < 16, this will update its flags,
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* else it will create a new mp_irqs[] entry.
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*/
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mp_override_legacy_irq(gsi, polarity, trigger, gsi);
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/*
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* stash over-ride to indicate we've been here
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* and for later update of acpi_gbl_FADT
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*/
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acpi_sci_override_gsi = gsi;
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return;
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}
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static int __init
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acpi_parse_int_src_ovr(acpi_table_entry_header * header,
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const unsigned long end)
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{
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struct acpi_table_int_src_ovr *intsrc = NULL;
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intsrc = (struct acpi_table_int_src_ovr *)header;
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if (BAD_MADT_ENTRY(intsrc, end))
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return -EINVAL;
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acpi_table_print_madt_entry(header);
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if (intsrc->bus_irq == acpi_gbl_FADT.sci_interrupt) {
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acpi_sci_ioapic_setup(intsrc->global_irq,
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intsrc->flags.polarity,
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intsrc->flags.trigger);
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return 0;
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}
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if (acpi_skip_timer_override &&
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intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
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printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
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return 0;
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}
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mp_override_legacy_irq(intsrc->bus_irq,
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intsrc->flags.polarity,
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intsrc->flags.trigger, intsrc->global_irq);
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return 0;
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}
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static int __init
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acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end)
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{
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struct acpi_table_nmi_src *nmi_src = NULL;
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nmi_src = (struct acpi_table_nmi_src *)header;
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if (BAD_MADT_ENTRY(nmi_src, end))
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return -EINVAL;
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acpi_table_print_madt_entry(header);
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/* TBD: Support nimsrc entries? */
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return 0;
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}
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#endif /* CONFIG_X86_IO_APIC */
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/*
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* acpi_pic_sci_set_trigger()
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*
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* use ELCR to set PIC-mode trigger type for SCI
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*
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* If a PIC-mode SCI is not recognized or gives spurious IRQ7's
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* it may require Edge Trigger -- use "acpi_sci=edge"
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*
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* Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
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* for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
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* ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
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* ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
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*/
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void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
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{
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unsigned int mask = 1 << irq;
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unsigned int old, new;
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/* Real old ELCR mask */
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old = inb(0x4d0) | (inb(0x4d1) << 8);
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/*
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* If we use ACPI to set PCI irq's, then we should clear ELCR
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* since we will set it correctly as we enable the PCI irq
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* routing.
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*/
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new = acpi_noirq ? old : 0;
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/*
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* Update SCI information in the ELCR, it isn't in the PCI
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* routing tables..
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*/
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switch (trigger) {
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case 1: /* Edge - clear */
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new &= ~mask;
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break;
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case 3: /* Level - set */
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new |= mask;
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break;
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}
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if (old == new)
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return;
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printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
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outb(new, 0x4d0);
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outb(new >> 8, 0x4d1);
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}
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int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
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{
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*irq = gsi;
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return 0;
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}
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/*
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* success: return IRQ number (>=0)
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* failure: return < 0
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*/
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int acpi_register_gsi(u32 gsi, int triggering, int polarity)
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{
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unsigned int irq;
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unsigned int plat_gsi = gsi;
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#ifdef CONFIG_PCI
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/*
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* Make sure all (legacy) PCI IRQs are set as level-triggered.
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*/
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if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
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extern void eisa_set_level_irq(unsigned int irq);
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if (triggering == ACPI_LEVEL_SENSITIVE)
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eisa_set_level_irq(gsi);
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}
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#endif
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#ifdef CONFIG_X86_IO_APIC
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if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
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plat_gsi = mp_register_gsi(gsi, triggering, polarity);
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}
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#endif
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acpi_gsi_to_irq(plat_gsi, &irq);
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return irq;
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}
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EXPORT_SYMBOL(acpi_register_gsi);
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/*
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* ACPI based hotplug support for CPU
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*/
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#ifdef CONFIG_ACPI_HOTPLUG_CPU
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int acpi_map_lsapic(acpi_handle handle, int *pcpu)
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{
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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union acpi_object *obj;
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struct acpi_table_lapic *lapic;
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cpumask_t tmp_map, new_map;
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u8 physid;
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int cpu;
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if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
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return -EINVAL;
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if (!buffer.length || !buffer.pointer)
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return -EINVAL;
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obj = buffer.pointer;
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if (obj->type != ACPI_TYPE_BUFFER ||
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|
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(struct acpi_table_header *header)
|
|
{
|
|
struct acpi_table_sbf *sb;
|
|
|
|
if (!header)
|
|
return -EINVAL;
|
|
|
|
sb = (struct acpi_table_sbf *)header;
|
|
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(struct acpi_table_header *header)
|
|
{
|
|
struct acpi_table_hpet *hpet_tbl;
|
|
struct resource *hpet_res;
|
|
resource_size_t res_start;
|
|
|
|
if (!header)
|
|
return -EINVAL;
|
|
|
|
hpet_tbl = (struct acpi_table_hpet *)header;
|
|
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(struct acpi_table_header *header)
|
|
{
|
|
struct acpi_table_fadt *fadt = NULL;
|
|
|
|
fadt = (struct acpi_table_fadt *)header;
|
|
if (!fadt) {
|
|
printk(KERN_WARNING PREFIX "Unable to map FADT\n");
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_X86_PM_TIMER
|
|
/* detect the location of the ACPI PM Timer */
|
|
if (fadt->header.revision >= FADT2_REVISION_ID) {
|
|
/* FADT rev. 2 */
|
|
if (fadt->xpm_timer_block.space_id !=
|
|
ACPI_ADR_SPACE_SYSTEM_IO)
|
|
return 0;
|
|
|
|
pmtmr_ioport = fadt->xpm_timer_block.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->pm_timer_block;
|
|
} else {
|
|
/* FADT rev. 1 */
|
|
pmtmr_ioport = fadt->pm_timer_block;
|
|
}
|
|
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_gbl_FADT.sci_interrupt, 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("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("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("BOOT", acpi_parse_sbf);
|
|
|
|
/*
|
|
* set sci_int and PM timer address
|
|
*/
|
|
acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
|
|
|
|
/*
|
|
* Process the Multiple APIC Description Table (MADT), if present
|
|
*/
|
|
acpi_process_madt();
|
|
|
|
acpi_table_parse("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);
|
|
|
|
static int __init parse_acpi_use_timer_override(char *arg)
|
|
{
|
|
acpi_use_timer_override = 1;
|
|
return 0;
|
|
}
|
|
early_param("acpi_use_timer_override", parse_acpi_use_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);
|
|
|
|
int __acpi_acquire_global_lock(unsigned int *lock)
|
|
{
|
|
unsigned int old, new, val;
|
|
do {
|
|
old = *lock;
|
|
new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
|
|
val = cmpxchg(lock, old, new);
|
|
} while (unlikely (val != old));
|
|
return (new < 3) ? -1 : 0;
|
|
}
|
|
|
|
int __acpi_release_global_lock(unsigned int *lock)
|
|
{
|
|
unsigned int old, new, val;
|
|
do {
|
|
old = *lock;
|
|
new = old & ~0x3;
|
|
val = cmpxchg(lock, old, new);
|
|
} while (unlikely (val != old));
|
|
return old & 0x1;
|
|
}
|