linux/include/acpi/achware.h
Zhang Rui 71b58cbb0c ACPI: Enhance /sys/firmware/interrupts to allow enable/disable/clear from user-space
Allow users to enable/disable/clear a specific & valid GPE/Fixed Event
in user space.

This is useful for debugging, especially for some
interrupt storm issues.

All wakeup GPEs are disabled and they can not be enabled at runtime,
and we mark them as invalid.

All GPEs that don't have a _Lxx/_Exx method are marked as invalid.

All Fixed Events that don't have an event handler are marked as invalid
and they can't be enabled until an event handler is registered.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Ling Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00

132 lines
4.2 KiB
C

/******************************************************************************
*
* Name: achware.h -- hardware specific interfaces
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2008, 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 __ACHWARE_H__
#define __ACHWARE_H__
/* PM Timer ticks per second (HZ) */
#define PM_TIMER_FREQUENCY 3579545
/* Values for the _SST reserved method */
#define ACPI_SST_INDICATOR_OFF 0
#define ACPI_SST_WORKING 1
#define ACPI_SST_WAKING 2
#define ACPI_SST_SLEEPING 3
#define ACPI_SST_SLEEP_CONTEXT 4
/* Prototypes */
/*
* hwacpi - high level functions
*/
acpi_status acpi_hw_set_mode(u32 mode);
u32 acpi_hw_get_mode(void);
/*
* hwregs - ACPI Register I/O
*/
struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id);
acpi_status
acpi_hw_register_read(u32 register_id, u32 * return_value);
acpi_status acpi_hw_register_write(u32 register_id, u32 value);
acpi_status
acpi_hw_low_level_read(u32 width,
u32 * value, struct acpi_generic_address *reg);
acpi_status
acpi_hw_low_level_write(u32 width, u32 value, struct acpi_generic_address *reg);
acpi_status acpi_hw_clear_acpi_status(void);
/*
* hwgpe - GPE support
*/
acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info);
acpi_status
acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info *gpe_event_info);
acpi_status
acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block);
acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info *gpe_event_info);
acpi_status
acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block);
acpi_status
acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
acpi_event_status * event_status);
acpi_status acpi_hw_disable_all_gpes(void);
acpi_status acpi_hw_enable_all_runtime_gpes(void);
acpi_status acpi_hw_enable_all_wakeup_gpes(void);
acpi_status
acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block);
#ifdef ACPI_FUTURE_USAGE
/*
* hwtimer - ACPI Timer prototypes
*/
acpi_status acpi_get_timer_resolution(u32 * resolution);
acpi_status acpi_get_timer(u32 * ticks);
acpi_status
acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed);
#endif /* ACPI_FUTURE_USAGE */
#endif /* __ACHWARE_H__ */