diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/kernel/acpi/boot.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/x86/kernel/acpi/boot.c | 1702 |
1 files changed, 0 insertions, 1702 deletions
diff --git a/ANDROID_3.4.5/arch/x86/kernel/acpi/boot.c b/ANDROID_3.4.5/arch/x86/kernel/acpi/boot.c deleted file mode 100644 index bbdffc2d..00000000 --- a/ANDROID_3.4.5/arch/x86/kernel/acpi/boot.c +++ /dev/null @@ -1,1702 +0,0 @@ -/* - * boot.c - Architecture-Specific Low-Level ACPI Boot Support - * - * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> - * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include <linux/init.h> -#include <linux/acpi.h> -#include <linux/acpi_pmtmr.h> -#include <linux/efi.h> -#include <linux/cpumask.h> -#include <linux/module.h> -#include <linux/dmi.h> -#include <linux/irq.h> -#include <linux/slab.h> -#include <linux/bootmem.h> -#include <linux/ioport.h> -#include <linux/pci.h> - -#include <asm/pci_x86.h> -#include <asm/pgtable.h> -#include <asm/io_apic.h> -#include <asm/apic.h> -#include <asm/io.h> -#include <asm/mpspec.h> -#include <asm/smp.h> - -static int __initdata acpi_force = 0; -u32 acpi_rsdt_forced; -int acpi_disabled; -EXPORT_SYMBOL(acpi_disabled); - -#ifdef CONFIG_X86_64 -# include <asm/proto.h> -# include <asm/numa_64.h> -#endif /* X86 */ - -#define BAD_MADT_ENTRY(entry, end) ( \ - (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ - ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) - -#define PREFIX "ACPI: " - -int acpi_noirq; /* skip ACPI IRQ initialization */ -int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ -EXPORT_SYMBOL(acpi_pci_disabled); - -int acpi_lapic; -int acpi_ioapic; -int acpi_strict; - -u8 acpi_sci_flags __initdata; -int acpi_sci_override_gsi __initdata; -int acpi_skip_timer_override __initdata; -int acpi_use_timer_override __initdata; -int acpi_fix_pin2_polarity __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 - -/* -------------------------------------------------------------------------- - Boot-time Configuration - -------------------------------------------------------------------------- */ - -/* - * The default interrupt routing model is PIC (8259). This gets - * overridden if IOAPICs are enumerated (below). - */ -enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; - - -/* - * ISA irqs by default are the first 16 gsis but can be - * any gsi as specified by an interrupt source override. - */ -static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 -}; - -static unsigned int gsi_to_irq(unsigned int gsi) -{ - unsigned int irq = gsi + NR_IRQS_LEGACY; - unsigned int i; - - for (i = 0; i < NR_IRQS_LEGACY; i++) { - if (isa_irq_to_gsi[i] == gsi) { - return i; - } - } - - /* Provide an identity mapping of gsi == irq - * except on truly weird platforms that have - * non isa irqs in the first 16 gsis. - */ - if (gsi >= NR_IRQS_LEGACY) - irq = gsi; - else - irq = gsi_top + gsi; - - return irq; -} - -static u32 irq_to_gsi(int irq) -{ - unsigned int gsi; - - if (irq < NR_IRQS_LEGACY) - gsi = isa_irq_to_gsi[irq]; - else if (irq < gsi_top) - gsi = irq; - else if (irq < (gsi_top + NR_IRQS_LEGACY)) - gsi = irq - gsi_top; - else - gsi = 0xffffffff; - - return gsi; -} - -/* - * 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 *__init __acpi_map_table(unsigned long phys, unsigned long size) -{ - - if (!phys || !size) - return NULL; - - return early_ioremap(phys, size); -} -void __init __acpi_unmap_table(char *map, unsigned long size) -{ - if (!map || !size) - return; - - early_iounmap(map, size); -} - -#ifdef CONFIG_X86_LOCAL_APIC -static int __init acpi_parse_madt(struct acpi_table_header *table) -{ - struct acpi_table_madt *madt = NULL; - - if (!cpu_has_apic) - return -EINVAL; - - madt = (struct acpi_table_madt *)table; - if (!madt) { - printk(KERN_WARNING PREFIX "Unable to map MADT\n"); - return -ENODEV; - } - - if (madt->address) { - acpi_lapic_addr = (u64) madt->address; - - printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", - madt->address); - } - - default_acpi_madt_oem_check(madt->header.oem_id, - madt->header.oem_table_id); - - return 0; -} - -static void __cpuinit acpi_register_lapic(int id, u8 enabled) -{ - unsigned int ver = 0; - - if (id >= (MAX_LOCAL_APIC-1)) { - printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); - return; - } - - if (!enabled) { - ++disabled_cpus; - return; - } - - if (boot_cpu_physical_apicid != -1U) - ver = apic_version[boot_cpu_physical_apicid]; - - generic_processor_info(id, ver); -} - -static int __init -acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) -{ - struct acpi_madt_local_x2apic *processor = NULL; - int apic_id; - u8 enabled; - - processor = (struct acpi_madt_local_x2apic *)header; - - if (BAD_MADT_ENTRY(processor, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - apic_id = processor->local_apic_id; - enabled = processor->lapic_flags & ACPI_MADT_ENABLED; -#ifdef CONFIG_X86_X2APIC - /* - * 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. - */ - if (!apic->apic_id_valid(apic_id) && enabled) - printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); - else - acpi_register_lapic(apic_id, enabled); -#else - printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); -#endif - - return 0; -} - -static int __init -acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) -{ - struct acpi_madt_local_apic *processor = NULL; - - processor = (struct acpi_madt_local_apic *)header; - - if (BAD_MADT_ENTRY(processor, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - /* - * 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. - */ - acpi_register_lapic(processor->id, /* APIC ID */ - processor->lapic_flags & ACPI_MADT_ENABLED); - - return 0; -} - -static int __init -acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) -{ - struct acpi_madt_local_sapic *processor = NULL; - - processor = (struct acpi_madt_local_sapic *)header; - - if (BAD_MADT_ENTRY(processor, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ - processor->lapic_flags & ACPI_MADT_ENABLED); - - return 0; -} - -static int __init -acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, - const unsigned long end) -{ - struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; - - lapic_addr_ovr = (struct acpi_madt_local_apic_override *)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_x2apic_nmi(struct acpi_subtable_header *header, - const unsigned long end) -{ - struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; - - x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; - - if (BAD_MADT_ENTRY(x2apic_nmi, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - if (x2apic_nmi->lint != 1) - printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); - - return 0; -} - -static int __init -acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) -{ - struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; - - lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; - - if (BAD_MADT_ENTRY(lapic_nmi, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - if (lapic_nmi->lint != 1) - printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); - - return 0; -} - -#endif /*CONFIG_X86_LOCAL_APIC */ - -#ifdef CONFIG_X86_IO_APIC - -static int __init -acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) -{ - struct acpi_madt_io_apic *ioapic = NULL; - - ioapic = (struct acpi_madt_io_apic *)header; - - if (BAD_MADT_ENTRY(ioapic, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - mp_register_ioapic(ioapic->id, - ioapic->address, ioapic->global_irq_base); - - return 0; -} - -/* - * Parse Interrupt Source Override for the ACPI SCI - */ -static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) -{ - if (trigger == 0) /* compatible SCI trigger is level */ - trigger = 3; - - if (polarity == 0) /* compatible SCI polarity is low */ - polarity = 3; - - /* Command-line over-ride via acpi_sci= */ - if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) - trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; - - if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) - polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; - - /* - * mp_config_acpi_legacy_irqs() already setup IRQs < 16 - * If GSI is < 16, this will update its flags, - * else it will create a new mp_irqs[] entry. - */ - mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); - - /* - * stash over-ride to indicate we've been here - * and for later update of acpi_gbl_FADT - */ - acpi_sci_override_gsi = gsi; - return; -} - -static int __init -acpi_parse_int_src_ovr(struct acpi_subtable_header * header, - const unsigned long end) -{ - struct acpi_madt_interrupt_override *intsrc = NULL; - - intsrc = (struct acpi_madt_interrupt_override *)header; - - if (BAD_MADT_ENTRY(intsrc, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { - acpi_sci_ioapic_setup(intsrc->source_irq, - intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, - (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, - intsrc->global_irq); - return 0; - } - - if (intsrc->source_irq == 0) { - if (acpi_skip_timer_override) { - printk(PREFIX "BIOS IRQ0 override ignored.\n"); - return 0; - } - - if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity - && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) { - intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK; - printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n"); - } - } - - mp_override_legacy_irq(intsrc->source_irq, - intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, - (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, - intsrc->global_irq); - - return 0; -} - -static int __init -acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) -{ - struct acpi_madt_nmi_source *nmi_src = NULL; - - nmi_src = (struct acpi_madt_nmi_source *)header; - - if (BAD_MADT_ENTRY(nmi_src, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - /* TBD: Support nimsrc entries? */ - - return 0; -} - -#endif /* CONFIG_X86_IO_APIC */ - -/* - * acpi_pic_sci_set_trigger() - * - * use ELCR to set PIC-mode trigger type for SCI - * - * If a PIC-mode SCI is not recognized or gives spurious IRQ7's - * it may require Edge Trigger -- use "acpi_sci=edge" - * - * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers - * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. - * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) - * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) - */ - -void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) -{ - unsigned int mask = 1 << irq; - unsigned int old, new; - - /* Real old ELCR mask */ - old = inb(0x4d0) | (inb(0x4d1) << 8); - - /* - * If we use ACPI to set PCI IRQs, then we should clear ELCR - * since we will set it correctly as we enable the PCI irq - * routing. - */ - new = acpi_noirq ? old : 0; - - /* - * Update SCI information in the ELCR, it isn't in the PCI - * routing tables.. - */ - switch (trigger) { - case 1: /* Edge - clear */ - new &= ~mask; - break; - case 3: /* Level - set */ - new |= mask; - break; - } - - if (old == new) - return; - - printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); - outb(new, 0x4d0); - outb(new >> 8, 0x4d1); -} - -int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) -{ - *irq = gsi_to_irq(gsi); - -#ifdef CONFIG_X86_IO_APIC - if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) - setup_IO_APIC_irq_extra(gsi); -#endif - - return 0; -} -EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); - -int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) -{ - if (isa_irq >= 16) - return -1; - *gsi = irq_to_gsi(isa_irq); - return 0; -} - -static int acpi_register_gsi_pic(struct device *dev, u32 gsi, - int trigger, int polarity) -{ -#ifdef CONFIG_PCI - /* - * Make sure all (legacy) PCI IRQs are set as level-triggered. - */ - if (trigger == ACPI_LEVEL_SENSITIVE) - eisa_set_level_irq(gsi); -#endif - - return gsi; -} - -static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, - int trigger, int polarity) -{ -#ifdef CONFIG_X86_IO_APIC - gsi = mp_register_gsi(dev, gsi, trigger, polarity); -#endif - - return gsi; -} - -int (*__acpi_register_gsi)(struct device *dev, u32 gsi, - int trigger, int polarity) = acpi_register_gsi_pic; - -/* - * success: return IRQ number (>=0) - * failure: return < 0 - */ -int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) -{ - unsigned int irq; - unsigned int plat_gsi = gsi; - - plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); - irq = gsi_to_irq(plat_gsi); - - return irq; -} - -void __init acpi_set_irq_model_pic(void) -{ - acpi_irq_model = ACPI_IRQ_MODEL_PIC; - __acpi_register_gsi = acpi_register_gsi_pic; - acpi_ioapic = 0; -} - -void __init acpi_set_irq_model_ioapic(void) -{ - acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; - __acpi_register_gsi = acpi_register_gsi_ioapic; - acpi_ioapic = 1; -} - -/* - * ACPI based hotplug support for CPU - */ -#ifdef CONFIG_ACPI_HOTPLUG_CPU -#include <acpi/processor.h> - -static void __cpuinit acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) -{ -#ifdef CONFIG_ACPI_NUMA - int nid; - - nid = acpi_get_node(handle); - if (nid == -1 || !node_online(nid)) - return; - set_apicid_to_node(physid, nid); - numa_set_node(cpu, nid); -#endif -} - -static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) -{ - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - struct acpi_madt_local_apic *lapic; - cpumask_var_t tmp_map, new_map; - u8 physid; - int cpu; - int retval = -ENOMEM; - - if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) - return -EINVAL; - - if (!buffer.length || !buffer.pointer) - return -EINVAL; - - obj = buffer.pointer; - if (obj->type != ACPI_TYPE_BUFFER || - obj->buffer.length < sizeof(*lapic)) { - kfree(buffer.pointer); - return -EINVAL; - } - - lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; - - if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || - !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { - kfree(buffer.pointer); - return -EINVAL; - } - - physid = lapic->id; - - kfree(buffer.pointer); - buffer.length = ACPI_ALLOCATE_BUFFER; - buffer.pointer = NULL; - lapic = NULL; - - if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) - goto out; - - if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) - goto free_tmp_map; - - cpumask_copy(tmp_map, cpu_present_mask); - acpi_register_lapic(physid, ACPI_MADT_ENABLED); - - /* - * If mp_register_lapic successfully generates a new logical cpu - * number, then the following will get us exactly what was mapped - */ - cpumask_andnot(new_map, cpu_present_mask, tmp_map); - if (cpumask_empty(new_map)) { - printk ("Unable to map lapic to logical cpu number\n"); - retval = -EINVAL; - goto free_new_map; - } - - acpi_processor_set_pdc(handle); - - cpu = cpumask_first(new_map); - acpi_map_cpu2node(handle, cpu, physid); - - *pcpu = cpu; - retval = 0; - -free_new_map: - free_cpumask_var(new_map); -free_tmp_map: - free_cpumask_var(tmp_map); -out: - return retval; -} - -/* wrapper to silence section mismatch warning */ -int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) -{ - return _acpi_map_lsapic(handle, pcpu); -} -EXPORT_SYMBOL(acpi_map_lsapic); - -int acpi_unmap_lsapic(int cpu) -{ - per_cpu(x86_cpu_to_apicid, cpu) = -1; - set_cpu_present(cpu, false); - 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 int __init acpi_parse_sbf(struct acpi_table_header *table) -{ - struct acpi_table_boot *sb; - - sb = (struct acpi_table_boot *)table; - if (!sb) { - printk(KERN_WARNING PREFIX "Unable to map SBF\n"); - return -ENODEV; - } - - sbf_port = sb->cmos_index; /* Save CMOS port */ - - return 0; -} - -#ifdef CONFIG_HPET_TIMER -#include <asm/hpet.h> - -static struct __initdata resource *hpet_res; - -static int __init acpi_parse_hpet(struct acpi_table_header *table) -{ - struct acpi_table_hpet *hpet_tbl; - - hpet_tbl = (struct acpi_table_hpet *)table; - if (!hpet_tbl) { - printk(KERN_WARNING PREFIX "Unable to map HPET\n"); - return -ENODEV; - } - - if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { - printk(KERN_WARNING PREFIX "HPET timers must be located in " - "memory.\n"); - return -1; - } - - hpet_address = hpet_tbl->address.address; - hpet_blockid = hpet_tbl->sequence; - - /* - * Some broken BIOSes advertise HPET at 0x0. We really do not - * want to allocate a resource there. - */ - if (!hpet_address) { - printk(KERN_WARNING PREFIX - "HPET id: %#x base: %#lx is invalid\n", - hpet_tbl->id, hpet_address); - return 0; - } -#ifdef CONFIG_X86_64 - /* - * Some even more broken BIOSes advertise HPET at - * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add - * some noise: - */ - if (hpet_address == 0xfed0000000000000UL) { - if (!hpet_force_user) { - printk(KERN_WARNING PREFIX "HPET id: %#x " - "base: 0xfed0000000000000 is bogus\n " - "try hpet=force on the kernel command line to " - "fix it up to 0xfed00000.\n", hpet_tbl->id); - hpet_address = 0; - return 0; - } - printk(KERN_WARNING PREFIX - "HPET id: %#x base: 0xfed0000000000000 fixed up " - "to 0xfed00000.\n", hpet_tbl->id); - hpet_address >>= 32; - } -#endif - printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", - hpet_tbl->id, hpet_address); - - /* - * Allocate and initialize the HPET firmware resource for adding into - * the resource tree during the lateinit timeframe. - */ -#define HPET_RESOURCE_NAME_SIZE 9 - hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); - - hpet_res->name = (void *)&hpet_res[1]; - hpet_res->flags = IORESOURCE_MEM; - snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", - hpet_tbl->sequence); - - hpet_res->start = hpet_address; - hpet_res->end = hpet_address + (1 * 1024) - 1; - - return 0; -} - -/* - * hpet_insert_resource inserts the HPET resources used into the resource - * tree. - */ -static __init int hpet_insert_resource(void) -{ - if (!hpet_res) - return 1; - - return insert_resource(&iomem_resource, hpet_res); -} - -late_initcall(hpet_insert_resource); - -#else -#define acpi_parse_hpet NULL -#endif - -static int __init acpi_parse_fadt(struct acpi_table_header *table) -{ - -#ifdef CONFIG_X86_PM_TIMER - /* detect the location of the ACPI PM Timer */ - if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { - /* FADT rev. 2 */ - if (acpi_gbl_FADT.xpm_timer_block.space_id != - ACPI_ADR_SPACE_SYSTEM_IO) - return 0; - - pmtmr_ioport = acpi_gbl_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 = acpi_gbl_FADT.pm_timer_block; - } else { - /* FADT rev. 1 */ - pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; - } - if (pmtmr_ioport) - printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", - pmtmr_ioport); -#endif - return 0; -} - -#ifdef CONFIG_X86_LOCAL_APIC -/* - * Parse LAPIC entries in MADT - * returns 0 on success, < 0 on error - */ - -static int __init early_acpi_parse_madt_lapic_addr_ovr(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_TYPE_LOCAL_APIC_OVERRIDE, - acpi_parse_lapic_addr_ovr, 0); - if (count < 0) { - printk(KERN_ERR PREFIX - "Error parsing LAPIC address override entry\n"); - return count; - } - - register_lapic_address(acpi_lapic_addr); - - return count; -} - -static int __init acpi_parse_madt_lapic_entries(void) -{ - int count; - int x2count = 0; - - 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_TYPE_LOCAL_APIC_OVERRIDE, - acpi_parse_lapic_addr_ovr, 0); - if (count < 0) { - printk(KERN_ERR PREFIX - "Error parsing LAPIC address override entry\n"); - return count; - } - - register_lapic_address(acpi_lapic_addr); - - count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, - acpi_parse_sapic, MAX_LOCAL_APIC); - - if (!count) { - x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, - acpi_parse_x2apic, MAX_LOCAL_APIC); - count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, - acpi_parse_lapic, MAX_LOCAL_APIC); - } - if (!count && !x2count) { - printk(KERN_ERR PREFIX "No LAPIC entries present\n"); - /* TBD: Cleanup to allow fallback to MPS */ - return -ENODEV; - } else if (count < 0 || x2count < 0) { - printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); - /* TBD: Cleanup to allow fallback to MPS */ - return count; - } - - x2count = - acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, - acpi_parse_x2apic_nmi, 0); - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); - if (count < 0 || x2count < 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 -#define MP_ISA_BUS 0 - -#ifdef CONFIG_X86_ES7000 -extern int es7000_plat; -#endif - -void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) -{ - int ioapic; - int pin; - struct mpc_intsrc mp_irq; - - /* - * Convert 'gsi' to 'ioapic.pin'. - */ - ioapic = mp_find_ioapic(gsi); - if (ioapic < 0) - return; - pin = mp_find_ioapic_pin(ioapic, gsi); - - /* - * TBD: This check is for faulty timer entries, where the override - * erroneously sets the trigger to level, resulting in a HUGE - * increase of timer interrupts! - */ - if ((bus_irq == 0) && (trigger == 3)) - trigger = 1; - - mp_irq.type = MP_INTSRC; - mp_irq.irqtype = mp_INT; - mp_irq.irqflag = (trigger << 2) | polarity; - mp_irq.srcbus = MP_ISA_BUS; - mp_irq.srcbusirq = bus_irq; /* IRQ */ - mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ - mp_irq.dstirq = pin; /* INTIN# */ - - mp_save_irq(&mp_irq); - - isa_irq_to_gsi[bus_irq] = gsi; -} - -void __init mp_config_acpi_legacy_irqs(void) -{ - int i; - struct mpc_intsrc mp_irq; - -#if defined (CONFIG_MCA) || defined (CONFIG_EISA) - /* - * Fabricate the legacy ISA bus (bus #31). - */ - mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; -#endif - set_bit(MP_ISA_BUS, mp_bus_not_pci); - pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); - -#ifdef CONFIG_X86_ES7000 - /* - * Older generations of ES7000 have no legacy identity mappings - */ - if (es7000_plat == 1) - return; -#endif - - /* - * Use the default configuration for the IRQs 0-15. Unless - * overridden by (MADT) interrupt source override entries. - */ - for (i = 0; i < 16; i++) { - int ioapic, pin; - unsigned int dstapic; - int idx; - u32 gsi; - - /* Locate the gsi that irq i maps to. */ - if (acpi_isa_irq_to_gsi(i, &gsi)) - continue; - - /* - * Locate the IOAPIC that manages the ISA IRQ. - */ - ioapic = mp_find_ioapic(gsi); - if (ioapic < 0) - continue; - pin = mp_find_ioapic_pin(ioapic, gsi); - dstapic = mpc_ioapic_id(ioapic); - - for (idx = 0; idx < mp_irq_entries; idx++) { - struct mpc_intsrc *irq = mp_irqs + idx; - - /* Do we already have a mapping for this ISA IRQ? */ - if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) - break; - - /* Do we already have a mapping for this IOAPIC pin */ - if (irq->dstapic == dstapic && irq->dstirq == pin) - break; - } - - if (idx != mp_irq_entries) { - printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); - continue; /* IRQ already used */ - } - - mp_irq.type = MP_INTSRC; - mp_irq.irqflag = 0; /* Conforming */ - mp_irq.srcbus = MP_ISA_BUS; - mp_irq.dstapic = dstapic; - mp_irq.irqtype = mp_INT; - mp_irq.srcbusirq = i; /* Identity mapped */ - mp_irq.dstirq = pin; - - mp_save_irq(&mp_irq); - } -} - -static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, - int polarity) -{ -#ifdef CONFIG_X86_MPPARSE - struct mpc_intsrc mp_irq; - struct pci_dev *pdev; - unsigned char number; - unsigned int devfn; - int ioapic; - u8 pin; - - if (!acpi_ioapic) - return 0; - if (!dev) - return 0; - if (dev->bus != &pci_bus_type) - return 0; - - pdev = to_pci_dev(dev); - number = pdev->bus->number; - devfn = pdev->devfn; - pin = pdev->pin; - /* print the entry should happen on mptable identically */ - mp_irq.type = MP_INTSRC; - mp_irq.irqtype = mp_INT; - mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | - (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); - mp_irq.srcbus = number; - mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); - ioapic = mp_find_ioapic(gsi); - mp_irq.dstapic = mpc_ioapic_id(ioapic); - mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); - - mp_save_irq(&mp_irq); -#endif - return 0; -} - -int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) -{ - int ioapic; - int ioapic_pin; - struct io_apic_irq_attr irq_attr; - - if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) - return gsi; - - /* Don't set up the ACPI SCI because it's already set up */ - if (acpi_gbl_FADT.sci_interrupt == gsi) - return gsi; - - ioapic = mp_find_ioapic(gsi); - if (ioapic < 0) { - printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); - return gsi; - } - - ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); - - if (ioapic_pin > MP_MAX_IOAPIC_PIN) { - printk(KERN_ERR "Invalid reference to IOAPIC pin " - "%d-%d\n", mpc_ioapic_id(ioapic), - ioapic_pin); - return gsi; - } - - if (enable_update_mptable) - mp_config_acpi_gsi(dev, gsi, trigger, polarity); - - set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, - trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, - polarity == ACPI_ACTIVE_HIGH ? 0 : 1); - io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); - - return gsi; -} - -/* - * 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_TYPE_IO_APIC, 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_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, - nr_irqs); - 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, - acpi_gbl_FADT.sci_interrupt); - - /* Fill in identity legacy mappings where no override */ - mp_config_acpi_legacy_irqs(); - - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, - nr_irqs); - 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 early_acpi_process_madt(void) -{ -#ifdef CONFIG_X86_LOCAL_APIC - int error; - - if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { - - /* - * Parse MADT LAPIC entries - */ - error = early_acpi_parse_madt_lapic_addr_ovr(); - if (!error) { - acpi_lapic = 1; - smp_found_config = 1; - } - if (error == -EINVAL) { - /* - * Dell Precision Workstation 410, 610 come here. - */ - printk(KERN_ERR PREFIX - "Invalid BIOS MADT, disabling ACPI\n"); - disable_acpi(); - } - } -#endif -} - -static void __init acpi_process_madt(void) -{ -#ifdef CONFIG_X86_LOCAL_APIC - int error; - - if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { - - /* - * Parse MADT LAPIC entries - */ - error = acpi_parse_madt_lapic_entries(); - if (!error) { - acpi_lapic = 1; - - /* - * Parse MADT IO-APIC entries - */ - error = acpi_parse_madt_ioapic_entries(); - if (!error) { - acpi_set_irq_model_ioapic(); - - smp_found_config = 1; - } - } - if (error == -EINVAL) { - /* - * Dell Precision Workstation 410, 610 come here. - */ - printk(KERN_ERR PREFIX - "Invalid BIOS MADT, disabling ACPI\n"); - disable_acpi(); - } - } else { - /* - * ACPI found no MADT, and so ACPI wants UP PIC mode. - * In the event an MPS table was found, forget it. - * Boot with "acpi=off" to use MPS on such a system. - */ - if (smp_found_config) { - printk(KERN_WARNING PREFIX - "No APIC-table, disabling MPS\n"); - smp_found_config = 0; - } - } - - /* - * ACPI supports both logical (e.g. Hyper-Threading) and physical - * processors, where MPS only supports physical. - */ - if (acpi_lapic && acpi_ioapic) - printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " - "information\n"); - else if (acpi_lapic) - printk(KERN_INFO "Using ACPI for processor (LAPIC) " - "configuration information\n"); -#endif - return; -} - -static int __init disable_acpi_irq(const 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(const 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(const 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; -} - -/* - * Force ignoring BIOS IRQ0 override - */ -static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) -{ - if (!acpi_skip_timer_override) { - pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", - d->ident); - acpi_skip_timer_override = 1; - } - return 0; -} - -/* - * If your system is blacklisted here, but you find that acpi=force - * works for you, please contact linux-acpi@vger.kernel.org - */ -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 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"), - }, - }, - { - /* - * Latest BIOS for IBM 600E (1.16) has bad pcinum - * for LPC bridge, which is needed for the PCI - * interrupt links to work. DSDT fix is in bug 5966. - * 2645, 2646 model numbers are shared with 600/600E/600X - */ - .callback = disable_acpi_irq, - .ident = "IBM Thinkpad 600 Series 2645", - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), - DMI_MATCH(DMI_BOARD_NAME, "2645"), - }, - }, - { - .callback = disable_acpi_irq, - .ident = "IBM Thinkpad 600 Series 2646", - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), - DMI_MATCH(DMI_BOARD_NAME, "2646"), - }, - }, - /* - * 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"), - }, - }, - {} -}; - -/* second table for DMI checks that should run after early-quirks */ -static struct dmi_system_id __initdata acpi_dmi_table_late[] = { - /* - * HP laptops which use a DSDT reporting as HP/SB400/10000, - * which includes some code which overrides all temperature - * trip points to 16C if the INTIN2 input of the I/O APIC - * is enabled. This input is incorrectly designated the - * ISA IRQ 0 via an interrupt source override even though - * it is wired to the output of the master 8259A and INTIN0 - * is not connected at all. Force ignoring BIOS IRQ0 - * override in that cases. - */ - { - .callback = dmi_ignore_irq0_timer_override, - .ident = "HP nx6115 laptop", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), - }, - }, - { - .callback = dmi_ignore_irq0_timer_override, - .ident = "HP NX6125 laptop", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), - }, - }, - { - .callback = dmi_ignore_irq0_timer_override, - .ident = "HP NX6325 laptop", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), - }, - }, - { - .callback = dmi_ignore_irq0_timer_override, - .ident = "HP 6715b laptop", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), - }, - }, - { - .callback = dmi_ignore_irq0_timer_override, - .ident = "FUJITSU SIEMENS", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), - DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), - }, - }, - {} -}; - -/* - * 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=... - * ... - */ - -void __init acpi_boot_table_init(void) -{ - dmi_check_system(acpi_dmi_table); - - /* - * If acpi_disabled, bail out - */ - if (acpi_disabled) - return; - - /* - * Initialize the ACPI boot-time table parser. - */ - if (acpi_table_init()) { - disable_acpi(); - return; - } - - acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); - - /* - * blacklist may disable ACPI entirely - */ - if (acpi_blacklisted()) { - if (acpi_force) { - printk(KERN_WARNING PREFIX "acpi=force override\n"); - } else { - printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); - disable_acpi(); - return; - } - } -} - -int __init early_acpi_boot_init(void) -{ - /* - * If acpi_disabled, bail out - */ - if (acpi_disabled) - return 1; - - /* - * Process the Multiple APIC Description Table (MADT), if present - */ - early_acpi_process_madt(); - - return 0; -} - -int __init acpi_boot_init(void) -{ - /* those are executed after early-quirks are executed */ - dmi_check_system(acpi_dmi_table_late); - - /* - * If acpi_disabled, bail out - */ - if (acpi_disabled) - return 1; - - acpi_table_parse(ACPI_SIG_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(ACPI_SIG_HPET, acpi_parse_hpet); - - if (!acpi_noirq) - x86_init.pci.init = pci_acpi_init; - - 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_disabled = 0; - } - /* acpi=strict disables out-of-spec workarounds */ - else if (strcmp(arg, "strict") == 0) { - acpi_strict = 1; - } - /* acpi=rsdt use RSDT instead of XSDT */ - else if (strcmp(arg, "rsdt") == 0) { - acpi_rsdt_forced = 1; - } - /* "acpi=noirq" disables ACPI interrupt routing */ - else if (strcmp(arg, "noirq") == 0) { - acpi_noirq_set(); - } - /* "acpi=copy_dsdt" copys DSDT */ - else if (strcmp(arg, "copy_dsdt") == 0) { - acpi_gbl_copy_dsdt_locally = 1; - } 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); - -int __init acpi_mps_check(void) -{ -#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) -/* mptable code is not built-in*/ - if (acpi_disabled || acpi_noirq) { - printk(KERN_WARNING "MPS support code is not built-in.\n" - "Using acpi=off or acpi=noirq or pci=noacpi " - "may have problem\n"); - return 1; - } -#endif - return 0; -} - -#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 = ACPI_MADT_TRIGGER_EDGE | - (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); - else if (!strcmp(s, "level")) - acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | - (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); - else if (!strcmp(s, "high")) - acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | - (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); - else if (!strcmp(s, "low")) - acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | - (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); - 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; -} |