mirror of
https://github.com/torvalds/linux.git
synced 2024-11-02 10:11:36 +00:00
28f4f8a9de
If a handler is installed for a GPE associated with an AML method and such that it cannot wake up the system from sleep states, the GPE remains enabled after the handler has been installed, although it should be disabled in that case to avoid spurious execution of the handler. Fix this issue by making acpi_install_gpe_handler() disable GPEs that were previously associated with AML methods and cannot wake up the system from sleep states. Analogously, make acpi_remove_gpe_handler() enable the GPEs that are associated with AML methods after their handlers have been removed and cannot wake up the system from sleep states. In addition to that, fix a code ordering issue in acpi_remove_gpe_handler() that renders the locking ineffective (ACPI_MTX_EVENTS is released temporarily in the middle of the routine to wait for the completion of events already in progress). For this purpose introduce acpi_raw_disable_gpe() and acpi_raw_enable_gpe() to be called with acpi_gbl_gpe_lock held and rework acpi_disable_gpe() and acpi_enable_gpe(), respectively, to use them. Also rework acpi_gpe_can_wake() to use acpi_raw_disable_gpe() instead of calling acpi_disable_gpe() after releasing the lock to avoid the possible theoretical race with acpi_install_gpe_handler(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: "Moore, Robert" <robert.moore@intel.com> Cc: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
235 lines
7.1 KiB
C
235 lines
7.1 KiB
C
/******************************************************************************
|
|
*
|
|
* Name: acevents.h - Event subcomponent prototypes and defines
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2010, 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 __ACEVENTS_H__
|
|
#define __ACEVENTS_H__
|
|
|
|
/*
|
|
* evevent
|
|
*/
|
|
acpi_status acpi_ev_initialize_events(void);
|
|
|
|
acpi_status acpi_ev_install_xrupt_handlers(void);
|
|
|
|
acpi_status acpi_ev_install_fadt_gpes(void);
|
|
|
|
u32 acpi_ev_fixed_event_detect(void);
|
|
|
|
/*
|
|
* evmisc
|
|
*/
|
|
u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node);
|
|
|
|
acpi_status acpi_ev_acquire_global_lock(u16 timeout);
|
|
|
|
acpi_status acpi_ev_release_global_lock(void);
|
|
|
|
acpi_status acpi_ev_init_global_lock_handler(void);
|
|
|
|
u32 acpi_ev_get_gpe_number_index(u32 gpe_number);
|
|
|
|
acpi_status
|
|
acpi_ev_queue_notify_request(struct acpi_namespace_node *node,
|
|
u32 notify_value);
|
|
|
|
/*
|
|
* evgpe - Low-level GPE support
|
|
*/
|
|
u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
|
|
|
|
acpi_status
|
|
acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info);
|
|
|
|
acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
|
|
|
|
acpi_status acpi_raw_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
|
|
|
|
acpi_status acpi_raw_disable_gpe(struct acpi_gpe_event_info *gpe_event_info);
|
|
|
|
struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
|
|
u32 gpe_number);
|
|
|
|
struct acpi_gpe_event_info *acpi_ev_low_get_gpe_info(u32 gpe_number,
|
|
struct acpi_gpe_block_info
|
|
*gpe_block);
|
|
|
|
/*
|
|
* evgpeblk - Upper-level GPE block support
|
|
*/
|
|
acpi_status
|
|
acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
|
|
struct acpi_generic_address *gpe_block_address,
|
|
u32 register_count,
|
|
u8 gpe_block_base_number,
|
|
u32 interrupt_number,
|
|
struct acpi_gpe_block_info **return_gpe_block);
|
|
|
|
acpi_status
|
|
acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
|
|
struct acpi_gpe_block_info *gpe_block);
|
|
|
|
acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block);
|
|
|
|
u32
|
|
acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info,
|
|
u32 gpe_number);
|
|
|
|
/*
|
|
* evgpeinit - GPE initialization and update
|
|
*/
|
|
acpi_status acpi_ev_gpe_initialize(void);
|
|
|
|
void acpi_ev_update_gpes(acpi_owner_id table_owner_id);
|
|
|
|
acpi_status
|
|
acpi_ev_match_gpe_method(acpi_handle obj_handle,
|
|
u32 level, void *context, void **return_value);
|
|
|
|
acpi_status
|
|
acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
|
|
u32 level, void *context, void **return_value);
|
|
|
|
/*
|
|
* evgpeutil - GPE utilities
|
|
*/
|
|
acpi_status
|
|
acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
|
|
|
|
u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info);
|
|
|
|
struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number);
|
|
|
|
acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt);
|
|
|
|
acpi_status
|
|
acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
|
struct acpi_gpe_block_info *gpe_block,
|
|
void *context);
|
|
|
|
/*
|
|
* evregion - Address Space handling
|
|
*/
|
|
acpi_status acpi_ev_install_region_handlers(void);
|
|
|
|
acpi_status acpi_ev_initialize_op_regions(void);
|
|
|
|
acpi_status
|
|
acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
|
|
u32 function,
|
|
u32 region_offset, u32 bit_width, u64 *value);
|
|
|
|
acpi_status
|
|
acpi_ev_attach_region(union acpi_operand_object *handler_obj,
|
|
union acpi_operand_object *region_obj,
|
|
u8 acpi_ns_is_locked);
|
|
|
|
void
|
|
acpi_ev_detach_region(union acpi_operand_object *region_obj,
|
|
u8 acpi_ns_is_locked);
|
|
|
|
acpi_status
|
|
acpi_ev_install_space_handler(struct acpi_namespace_node *node,
|
|
acpi_adr_space_type space_id,
|
|
acpi_adr_space_handler handler,
|
|
acpi_adr_space_setup setup, void *context);
|
|
|
|
acpi_status
|
|
acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
|
|
acpi_adr_space_type space_id);
|
|
|
|
acpi_status
|
|
acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function);
|
|
|
|
/*
|
|
* evregini - Region initialization and setup
|
|
*/
|
|
acpi_status
|
|
acpi_ev_system_memory_region_setup(acpi_handle handle,
|
|
u32 function,
|
|
void *handler_context,
|
|
void **region_context);
|
|
|
|
acpi_status
|
|
acpi_ev_io_space_region_setup(acpi_handle handle,
|
|
u32 function,
|
|
void *handler_context, void **region_context);
|
|
|
|
acpi_status
|
|
acpi_ev_pci_config_region_setup(acpi_handle handle,
|
|
u32 function,
|
|
void *handler_context, void **region_context);
|
|
|
|
acpi_status
|
|
acpi_ev_cmos_region_setup(acpi_handle handle,
|
|
u32 function,
|
|
void *handler_context, void **region_context);
|
|
|
|
acpi_status
|
|
acpi_ev_pci_bar_region_setup(acpi_handle handle,
|
|
u32 function,
|
|
void *handler_context, void **region_context);
|
|
|
|
acpi_status
|
|
acpi_ev_default_region_setup(acpi_handle handle,
|
|
u32 function,
|
|
void *handler_context, void **region_context);
|
|
|
|
acpi_status
|
|
acpi_ev_initialize_region(union acpi_operand_object *region_obj,
|
|
u8 acpi_ns_locked);
|
|
|
|
/*
|
|
* evsci - SCI (System Control Interrupt) handling/dispatch
|
|
*/
|
|
u32 ACPI_SYSTEM_XFACE acpi_ev_gpe_xrupt_handler(void *context);
|
|
|
|
u32 acpi_ev_install_sci_handler(void);
|
|
|
|
acpi_status acpi_ev_remove_sci_handler(void);
|
|
|
|
u32 acpi_ev_initialize_sCI(u32 program_sCI);
|
|
|
|
void acpi_ev_terminate(void);
|
|
|
|
#endif /* __ACEVENTS_H__ */
|