bdfe6b7c68
ACPI defines a hardware signature. BIOS calculates the signature according to hardware configure and if hardware changes while hibernated, the signature will change. In that case, S4 resume should fail. Still, there may be systems on which this mechanism does not work correctly, so it is better to provide a workaround for them. For this reason, add a new switch to the acpi_sleep= command line argument allowing one to disable hardware signature checking. [shaohua.li@intel.com: build fix] Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Andi Kleen <andi@firstfloor.org> Cc: Len Brown <lenb@kernel.org> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: <Valdis.Kletnieks@vt.edu> Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
281 lines
7.6 KiB
C
281 lines
7.6 KiB
C
/*
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* acpi.h - ACPI Interface
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*
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* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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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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#ifndef _LINUX_ACPI_H
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#define _LINUX_ACPI_H
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#include <linux/ioport.h> /* for struct resource */
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#ifdef CONFIG_ACPI
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#ifndef _LINUX
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#define _LINUX
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#endif
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#include <linux/list.h>
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#include <linux/mod_devicetable.h>
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#include <acpi/acpi.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_numa.h>
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#include <asm/acpi.h>
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#include <linux/dmi.h>
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enum acpi_irq_model_id {
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ACPI_IRQ_MODEL_PIC = 0,
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ACPI_IRQ_MODEL_IOAPIC,
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ACPI_IRQ_MODEL_IOSAPIC,
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ACPI_IRQ_MODEL_PLATFORM,
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ACPI_IRQ_MODEL_COUNT
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};
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extern enum acpi_irq_model_id acpi_irq_model;
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enum acpi_interrupt_id {
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ACPI_INTERRUPT_PMI = 1,
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ACPI_INTERRUPT_INIT,
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ACPI_INTERRUPT_CPEI,
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ACPI_INTERRUPT_COUNT
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};
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#define ACPI_SPACE_MEM 0
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enum acpi_address_range_id {
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ACPI_ADDRESS_RANGE_MEMORY = 1,
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ACPI_ADDRESS_RANGE_RESERVED = 2,
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ACPI_ADDRESS_RANGE_ACPI = 3,
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ACPI_ADDRESS_RANGE_NVS = 4,
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ACPI_ADDRESS_RANGE_COUNT
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};
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/* Table Handlers */
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typedef int (*acpi_table_handler) (struct acpi_table_header *table);
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typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end);
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char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
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int early_acpi_boot_init(void);
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int acpi_boot_init (void);
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int acpi_boot_table_init (void);
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int acpi_mps_check (void);
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int acpi_numa_init (void);
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int acpi_table_init (void);
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int acpi_table_parse (char *id, acpi_table_handler handler);
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int __init acpi_table_parse_entries(char *id, unsigned long table_size,
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int entry_id, acpi_table_entry_handler handler, unsigned int max_entries);
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int acpi_table_parse_madt (enum acpi_madt_type id, acpi_table_entry_handler handler, unsigned int max_entries);
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int acpi_parse_mcfg (struct acpi_table_header *header);
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void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
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/* the following four functions are architecture-dependent */
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#ifdef CONFIG_HAVE_ARCH_PARSE_SRAT
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#define NR_NODE_MEMBLKS MAX_NUMNODES
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#define acpi_numa_slit_init(slit) do {} while (0)
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#define acpi_numa_processor_affinity_init(pa) do {} while (0)
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#define acpi_numa_memory_affinity_init(ma) do {} while (0)
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#define acpi_numa_arch_fixup() do {} while (0)
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#else
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void acpi_numa_slit_init (struct acpi_table_slit *slit);
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void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
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void acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
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void acpi_numa_arch_fixup(void);
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#endif
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#ifdef CONFIG_ACPI_HOTPLUG_CPU
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/* Arch dependent functions for cpu hotplug support */
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int acpi_map_lsapic(acpi_handle handle, int *pcpu);
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int acpi_unmap_lsapic(int cpu);
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#endif /* CONFIG_ACPI_HOTPLUG_CPU */
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int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
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int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
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void acpi_irq_stats_init(void);
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extern u32 acpi_irq_handled;
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extern struct acpi_mcfg_allocation *pci_mmcfg_config;
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extern int pci_mmcfg_config_num;
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extern int sbf_port;
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extern unsigned long acpi_realmode_flags;
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int acpi_register_gsi (u32 gsi, int triggering, int polarity);
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int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
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#ifdef CONFIG_X86_IO_APIC
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extern int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity);
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#else
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#define acpi_get_override_irq(bus, trigger, polarity) (-1)
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#endif
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/*
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* This function undoes the effect of one call to acpi_register_gsi().
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* If this matches the last registration, any IRQ resources for gsi
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* are freed.
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*/
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void acpi_unregister_gsi (u32 gsi);
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struct acpi_prt_entry {
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struct list_head node;
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struct acpi_pci_id id;
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u8 pin;
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struct {
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acpi_handle handle;
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u32 index;
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} link;
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u32 irq;
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};
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struct acpi_prt_list {
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int count;
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struct list_head entries;
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};
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struct pci_dev;
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int acpi_pci_irq_enable (struct pci_dev *dev);
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void acpi_penalize_isa_irq(int irq, int active);
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void acpi_pci_irq_disable (struct pci_dev *dev);
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struct acpi_pci_driver {
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struct acpi_pci_driver *next;
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int (*add)(acpi_handle handle);
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void (*remove)(acpi_handle handle);
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};
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int acpi_pci_register_driver(struct acpi_pci_driver *driver);
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void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
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#ifdef CONFIG_ACPI_EC
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extern int ec_read(u8 addr, u8 *val);
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extern int ec_write(u8 addr, u8 val);
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extern int ec_transaction(u8 command,
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const u8 *wdata, unsigned wdata_len,
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u8 *rdata, unsigned rdata_len,
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int force_poll);
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#endif /*CONFIG_ACPI_EC*/
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#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
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typedef void (*wmi_notify_handler) (u32 value, void *context);
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extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
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u32 method_id,
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const struct acpi_buffer *in,
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struct acpi_buffer *out);
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extern acpi_status wmi_query_block(const char *guid, u8 instance,
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struct acpi_buffer *out);
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extern acpi_status wmi_set_block(const char *guid, u8 instance,
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const struct acpi_buffer *in);
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extern acpi_status wmi_install_notify_handler(const char *guid,
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wmi_notify_handler handler, void *data);
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extern acpi_status wmi_remove_notify_handler(const char *guid);
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extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
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extern bool wmi_has_guid(const char *guid);
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#endif /* CONFIG_ACPI_WMI */
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extern int acpi_blacklisted(void);
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#ifdef CONFIG_DMI
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extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
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extern int acpi_osi_setup(char *str);
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#endif
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#ifdef CONFIG_ACPI_NUMA
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int acpi_get_pxm(acpi_handle handle);
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int acpi_get_node(acpi_handle *handle);
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#else
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static inline int acpi_get_pxm(acpi_handle handle)
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{
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return 0;
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}
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static inline int acpi_get_node(acpi_handle *handle)
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{
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return 0;
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}
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#endif
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extern int acpi_paddr_to_node(u64 start_addr, u64 size);
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extern int pnpacpi_disabled;
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#define PXM_INVAL (-1)
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#define NID_INVAL (-1)
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int acpi_check_resource_conflict(struct resource *res);
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int acpi_check_region(resource_size_t start, resource_size_t n,
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const char *name);
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int acpi_check_mem_region(resource_size_t start, resource_size_t n,
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const char *name);
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#ifdef CONFIG_PM_SLEEP
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void __init acpi_no_s4_hw_signature(void);
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void __init acpi_old_suspend_ordering(void);
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#endif /* CONFIG_PM_SLEEP */
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#else /* CONFIG_ACPI */
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static inline int early_acpi_boot_init(void)
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{
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return 0;
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}
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static inline int acpi_boot_init(void)
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{
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return 0;
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}
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static inline int acpi_boot_table_init(void)
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{
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return 0;
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}
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static inline int acpi_mps_check(void)
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{
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return 0;
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}
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static inline int acpi_check_resource_conflict(struct resource *res)
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{
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return 0;
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}
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static inline int acpi_check_region(resource_size_t start, resource_size_t n,
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const char *name)
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{
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return 0;
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}
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static inline int acpi_check_mem_region(resource_size_t start,
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resource_size_t n, const char *name)
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{
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return 0;
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}
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#endif /* !CONFIG_ACPI */
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#endif /*_LINUX_ACPI_H*/
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