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linux-next/include/linux/acpi.h
Rafael J. Wysocki 2d6d9fd3a5 ACPI: Introduce acpi_os_ioremap() 
Commit ca9b600be3 ("ACPI / PM: Make suspend_nvs_save() use
acpi_os_map_memory()") attempted to prevent the code in osl.c and nvs.c
from using different ioremap() variants by making the latter use
acpi_os_map_memory() for mapping the NVS pages.  However, that also
requires acpi_os_unmap_memory() to be used for unmapping them, which
causes synchronize_rcu() to be executed many times in a row
unnecessarily and introduces substantial delays during resume on some
systems.

Instead of using acpi_os_map_memory() for mapping the NVS pages in nvs.c
introduce acpi_os_ioremap() calling ioremap_cache() and make the code in
both osl.c and nvs.c use it.

Reported-by: Jeff Chua <jeff.chua.linux@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-20 18:30:17 -08:00

363 lines
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/*
* acpi.h - ACPI Interface
*
* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@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
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#ifndef _LINUX_ACPI_H
#define _LINUX_ACPI_H
#include <linux/ioport.h> /* for struct resource */
#ifdef CONFIG_ACPI
#ifndef _LINUX
#define _LINUX
#endif
#include <linux/list.h>
#include <linux/mod_devicetable.h>
#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_numa.h>
#include <asm/acpi.h>
enum acpi_irq_model_id {
ACPI_IRQ_MODEL_PIC = 0,
ACPI_IRQ_MODEL_IOAPIC,
ACPI_IRQ_MODEL_IOSAPIC,
ACPI_IRQ_MODEL_PLATFORM,
ACPI_IRQ_MODEL_COUNT
};
extern enum acpi_irq_model_id acpi_irq_model;
enum acpi_interrupt_id {
ACPI_INTERRUPT_PMI = 1,
ACPI_INTERRUPT_INIT,
ACPI_INTERRUPT_CPEI,
ACPI_INTERRUPT_COUNT
};
#define ACPI_SPACE_MEM 0
enum acpi_address_range_id {
ACPI_ADDRESS_RANGE_MEMORY = 1,
ACPI_ADDRESS_RANGE_RESERVED = 2,
ACPI_ADDRESS_RANGE_ACPI = 3,
ACPI_ADDRESS_RANGE_NVS = 4,
ACPI_ADDRESS_RANGE_COUNT
};
/* Table Handlers */
typedef int (*acpi_table_handler) (struct acpi_table_header *table);
typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end);
char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
void __acpi_unmap_table(char *map, unsigned long size);
int early_acpi_boot_init(void);
int acpi_boot_init (void);
void acpi_boot_table_init (void);
int acpi_mps_check (void);
int acpi_numa_init (void);
int acpi_table_init (void);
int acpi_table_parse (char *id, acpi_table_handler handler);
int __init acpi_table_parse_entries(char *id, unsigned long table_size,
int entry_id, acpi_table_entry_handler handler, unsigned int max_entries);
int acpi_table_parse_madt (enum acpi_madt_type id, acpi_table_entry_handler handler, unsigned int max_entries);
int acpi_parse_mcfg (struct acpi_table_header *header);
void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
/* the following four functions are architecture-dependent */
void acpi_numa_slit_init (struct acpi_table_slit *slit);
void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
void acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
void acpi_numa_arch_fixup(void);
#ifdef CONFIG_ACPI_HOTPLUG_CPU
/* Arch dependent functions for cpu hotplug support */
int acpi_map_lsapic(acpi_handle handle, int *pcpu);
int acpi_unmap_lsapic(int cpu);
#endif /* CONFIG_ACPI_HOTPLUG_CPU */
int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
void acpi_irq_stats_init(void);
extern u32 acpi_irq_handled;
extern u32 acpi_irq_not_handled;
extern int sbf_port;
extern unsigned long acpi_realmode_flags;
int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity);
int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi);
#ifdef CONFIG_X86_IO_APIC
extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity);
#else
#define acpi_get_override_irq(gsi, trigger, polarity) (-1)
#endif
/*
* This function undoes the effect of one call to acpi_register_gsi().
* If this matches the last registration, any IRQ resources for gsi
* are freed.
*/
void acpi_unregister_gsi (u32 gsi);
struct pci_dev;
int acpi_pci_irq_enable (struct pci_dev *dev);
void acpi_penalize_isa_irq(int irq, int active);
void acpi_pci_irq_disable (struct pci_dev *dev);
struct acpi_pci_driver {
struct acpi_pci_driver *next;
int (*add)(acpi_handle handle);
void (*remove)(acpi_handle handle);
};
int acpi_pci_register_driver(struct acpi_pci_driver *driver);
void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
extern int ec_read(u8 addr, u8 *val);
extern int ec_write(u8 addr, u8 val);
extern int ec_transaction(u8 command,
const u8 *wdata, unsigned wdata_len,
u8 *rdata, unsigned rdata_len,
int force_poll);
#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
typedef void (*wmi_notify_handler) (u32 value, void *context);
extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
u32 method_id,
const struct acpi_buffer *in,
struct acpi_buffer *out);
extern acpi_status wmi_query_block(const char *guid, u8 instance,
struct acpi_buffer *out);
extern acpi_status wmi_set_block(const char *guid, u8 instance,
const struct acpi_buffer *in);
extern acpi_status wmi_install_notify_handler(const char *guid,
wmi_notify_handler handler, void *data);
extern acpi_status wmi_remove_notify_handler(const char *guid);
extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
extern bool wmi_has_guid(const char *guid);
#endif /* CONFIG_ACPI_WMI */
#define ACPI_VIDEO_OUTPUT_SWITCHING 0x0001
#define ACPI_VIDEO_DEVICE_POSTING 0x0002
#define ACPI_VIDEO_ROM_AVAILABLE 0x0004
#define ACPI_VIDEO_BACKLIGHT 0x0008
#define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR 0x0010
#define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO 0x0020
#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR 0x0040
#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO 0x0080
#define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR 0x0100
#define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO 0x0200
#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR 0x0400
#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO 0x0800
#if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle);
extern long acpi_is_video_device(struct acpi_device *device);
extern int acpi_video_backlight_support(void);
extern int acpi_video_display_switch_support(void);
#else
static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle)
{
return 0;
}
static inline long acpi_is_video_device(struct acpi_device *device)
{
return 0;
}
static inline int acpi_video_backlight_support(void)
{
return 0;
}
static inline int acpi_video_display_switch_support(void)
{
return 0;
}
#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
extern int acpi_blacklisted(void);
extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
extern void acpi_osi_setup(char *str);
#ifdef CONFIG_ACPI_NUMA
int acpi_get_pxm(acpi_handle handle);
int acpi_get_node(acpi_handle *handle);
#else
static inline int acpi_get_pxm(acpi_handle handle)
{
return 0;
}
static inline int acpi_get_node(acpi_handle *handle)
{
return 0;
}
#endif
extern int acpi_paddr_to_node(u64 start_addr, u64 size);
extern int pnpacpi_disabled;
#define PXM_INVAL (-1)
#define NID_INVAL (-1)
int acpi_check_resource_conflict(const struct resource *res);
int acpi_check_region(resource_size_t start, resource_size_t n,
const char *name);
int acpi_resources_are_enforced(void);
#ifdef CONFIG_PM_SLEEP
void __init acpi_no_s4_hw_signature(void);
void __init acpi_old_suspend_ordering(void);
void __init acpi_nvs_nosave(void);
#endif /* CONFIG_PM_SLEEP */
struct acpi_osc_context {
char *uuid_str; /* uuid string */
int rev;
struct acpi_buffer cap; /* arg2/arg3 */
struct acpi_buffer ret; /* free by caller if success */
};
#define OSC_QUERY_TYPE 0
#define OSC_SUPPORT_TYPE 1
#define OSC_CONTROL_TYPE 2
/* _OSC DW0 Definition */
#define OSC_QUERY_ENABLE 1
#define OSC_REQUEST_ERROR 2
#define OSC_INVALID_UUID_ERROR 4
#define OSC_INVALID_REVISION_ERROR 8
#define OSC_CAPABILITIES_MASK_ERROR 16
acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
/* platform-wide _OSC bits */
#define OSC_SB_PAD_SUPPORT 1
#define OSC_SB_PPC_OST_SUPPORT 2
#define OSC_SB_PR3_SUPPORT 4
#define OSC_SB_CPUHP_OST_SUPPORT 8
#define OSC_SB_APEI_SUPPORT 16
/* PCI defined _OSC bits */
/* _OSC DW1 Definition (OS Support Fields) */
#define OSC_EXT_PCI_CONFIG_SUPPORT 1
#define OSC_ACTIVE_STATE_PWR_SUPPORT 2
#define OSC_CLOCK_PWR_CAPABILITY_SUPPORT 4
#define OSC_PCI_SEGMENT_GROUPS_SUPPORT 8
#define OSC_MSI_SUPPORT 16
#define OSC_PCI_SUPPORT_MASKS 0x1f
/* _OSC DW1 Definition (OS Control Fields) */
#define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL 1
#define OSC_SHPC_NATIVE_HP_CONTROL 2
#define OSC_PCI_EXPRESS_PME_CONTROL 4
#define OSC_PCI_EXPRESS_AER_CONTROL 8
#define OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL 16
#define OSC_PCI_CONTROL_MASKS (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL | \
OSC_SHPC_NATIVE_HP_CONTROL | \
OSC_PCI_EXPRESS_PME_CONTROL | \
OSC_PCI_EXPRESS_AER_CONTROL | \
OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL)
extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
u32 *mask, u32 req);
extern void acpi_early_init(void);
#else /* !CONFIG_ACPI */
#define acpi_disabled 1
static inline void acpi_early_init(void) { }
static inline int early_acpi_boot_init(void)
{
return 0;
}
static inline int acpi_boot_init(void)
{
return 0;
}
static inline void acpi_boot_table_init(void)
{
return;
}
static inline int acpi_mps_check(void)
{
return 0;
}
static inline int acpi_check_resource_conflict(struct resource *res)
{
return 0;
}
static inline int acpi_check_region(resource_size_t start, resource_size_t n,
const char *name)
{
return 0;
}
struct acpi_table_header;
static inline int acpi_table_parse(char *id,
int (*handler)(struct acpi_table_header *))
{
return -1;
}
#endif /* !CONFIG_ACPI */
#ifdef CONFIG_ACPI_SLEEP
int suspend_nvs_register(unsigned long start, unsigned long size);
#else
static inline int suspend_nvs_register(unsigned long a, unsigned long b)
{
return 0;
}
#endif
#endif /*_LINUX_ACPI_H*/
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