alistair23-linux/include/acpi/acpiosxf.h

/******************************************************************************
 *
 * Name: acpiosxf.h - All interfaces to the OS Services Layer (OSL).  These
 *                    interfaces must be implemented by OSL to interface the
 *                    ACPI components to the host operating system.
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2012, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#ifndef __ACPIOSXF_H__
#define __ACPIOSXF_H__

#include "platform/acenv.h"
#include "actypes.h"

/* Types for acpi_os_execute */

typedef enum {
	OSL_GLOBAL_LOCK_HANDLER,
	OSL_NOTIFY_HANDLER,
	OSL_GPE_HANDLER,
	OSL_DEBUGGER_THREAD,
	OSL_EC_POLL_HANDLER,
	OSL_EC_BURST_HANDLER
} acpi_execute_type;

#define ACPI_NO_UNIT_LIMIT          ((u32) -1)
#define ACPI_MUTEX_SEM              1

/* Functions for acpi_os_signal */

#define ACPI_SIGNAL_FATAL           0
#define ACPI_SIGNAL_BREAKPOINT      1

struct acpi_signal_fatal_info {
	u32 type;
	u32 code;
	u32 argument;
};

/*
 * OSL Initialization and shutdown primitives
 */
acpi_status __initdata acpi_os_initialize(void);

acpi_status acpi_os_terminate(void);

/*
 * ACPI Table interfaces
 */
acpi_physical_address acpi_os_get_root_pointer(void);

acpi_status
acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
			    acpi_string * new_val);

acpi_status
acpi_os_table_override(struct acpi_table_header *existing_table,
		       struct acpi_table_header **new_table);

acpi_status
acpi_os_physical_table_override(struct acpi_table_header *existing_table,
				acpi_physical_address * new_address,
				u32 *new_table_length);

/*
 * Spinlock primitives
 */

#ifndef acpi_os_create_lock
acpi_status
acpi_os_create_lock(acpi_spinlock *out_handle);
#endif

void acpi_os_delete_lock(acpi_spinlock handle);

acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);

void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags);

/*
 * Semaphore primitives
 */
acpi_status
acpi_os_create_semaphore(u32 max_units,
			 u32 initial_units, acpi_semaphore * out_handle);

acpi_status acpi_os_delete_semaphore(acpi_semaphore handle);

acpi_status
acpi_os_wait_semaphore(acpi_semaphore handle, u32 units, u16 timeout);

acpi_status acpi_os_signal_semaphore(acpi_semaphore handle, u32 units);

/*
 * Mutex primitives. May be configured to use semaphores instead via
 * ACPI_MUTEX_TYPE (see platform/acenv.h)
 */
#if (ACPI_MUTEX_TYPE != ACPI_BINARY_SEMAPHORE)

acpi_status acpi_os_create_mutex(acpi_mutex * out_handle);

void acpi_os_delete_mutex(acpi_mutex handle);

acpi_status acpi_os_acquire_mutex(acpi_mutex handle, u16 timeout);

void acpi_os_release_mutex(acpi_mutex handle);
#endif

/*
 * Memory allocation and mapping
 */
void *acpi_os_allocate(acpi_size size);

void __iomem *acpi_os_map_memory(acpi_physical_address where,
				acpi_size length);

void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size);
void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size);

#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_os_get_physical_address(void *logical_address,
			     acpi_physical_address * physical_address);
#endif

/*
 * Memory/Object Cache
 */
acpi_status
acpi_os_create_cache(char *cache_name,
		     u16 object_size,
		     u16 max_depth, acpi_cache_t ** return_cache);

acpi_status acpi_os_delete_cache(acpi_cache_t * cache);

acpi_status acpi_os_purge_cache(acpi_cache_t * cache);

void *acpi_os_acquire_object(acpi_cache_t * cache);

acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object);

/*
 * Interrupt handlers
 */
acpi_status
acpi_os_install_interrupt_handler(u32 gsi,
				  acpi_osd_handler service_routine,
				  void *context);

acpi_status
acpi_os_remove_interrupt_handler(u32 gsi, acpi_osd_handler service_routine);

void acpi_os_gpe_count(u32 gpe_number);
void acpi_os_fixed_event_count(u32 fixed_event_number);

/*
 * Threads and Scheduling
 */
extern struct workqueue_struct *kacpi_hotplug_wq;

acpi_thread_id acpi_os_get_thread_id(void);

acpi_status
acpi_os_execute(acpi_execute_type type,
		acpi_osd_exec_callback function, void *context);

acpi_status
acpi_os_hotplug_execute(acpi_osd_exec_callback function, void *context);

void acpi_os_wait_events_complete(void);

void acpi_os_sleep(u64 milliseconds);

void acpi_os_stall(u32 microseconds);

/*
 * Platform and hardware-independent I/O interfaces
 */
acpi_status acpi_os_read_port(acpi_io_address address, u32 * value, u32 width);

acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width);

/*
 * Platform and hardware-independent physical memory interfaces
 */
acpi_status
acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width);

acpi_status
acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width);

/*
 * Platform and hardware-independent PCI configuration space access
 * Note: Can't use "Register" as a parameter, changed to "Reg" --
 * certain compilers complain.
 */
acpi_status
acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id,
			       u32 reg, u64 *value, u32 width);

acpi_status
acpi_os_write_pci_configuration(struct acpi_pci_id *pci_id,
				u32 reg, u64 value, u32 width);

/*
 * Miscellaneous
 */
u64 acpi_os_get_timer(void);

acpi_status acpi_os_signal(u32 function, void *info);

/*
 * Debug print routines
 */
void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *format, ...);

void acpi_os_vprintf(const char *format, va_list args);

void acpi_os_redirect_output(void *destination);

#ifdef ACPI_FUTURE_USAGE
/*
 * Debug input
 */
u32 acpi_os_get_line(char *buffer);
#endif

/*
 * Directory manipulation
 */
void *acpi_os_open_directory(char *pathname,
			     char *wildcard_spec, char requested_file_type);

/* requeste_file_type values */

#define REQUEST_FILE_ONLY                   0
#define REQUEST_DIR_ONLY                    1

char *acpi_os_get_next_filename(void *dir_handle);

void acpi_os_close_directory(void *dir_handle);

#endif				/* __ACPIOSXF_H__ */