forked from Minki/linux
9874647ba1
Currently, during initialization ACPICA walks the entire ACPI namespace in search of any device objects with assciated _PRW methods. All of the _PRW methods found are executed in the process to extract the GPE information returned by them, so that the GPEs in question can be marked as "able to wakeup" (more precisely, the ACPI_GPE_CAN_WAKE flag is set for them). The only purpose of this exercise is to avoid enabling the CAN_WAKE GPEs automatically, even if there are _Lxx/_Exx methods associated with them. However, it is both costly and unnecessary, because the host OS has to execute the _PRW methods anyway to check which devices can wake up the system from sleep states. Moreover, it then uses full information returned by _PRW, including the GPE information, so it can take care of disabling the GPEs if necessary. Remove the code that walks the namespace and executes _PRW from ACPICA and modify comments to reflect that change. Make acpi_bus_set_run_wake_flags() disable GPEs for wakeup devices so that they don't cause spurious wakeup events to be signaled. This not only reduces the complexity of the ACPICA initialization code, but in some cases it should reduce the kernel boot time as well. Unfortunately, for this purpose we need a new ACPICA function, acpi_gpe_can_wake(), to be called by the host OS in order to disable the GPEs that can wake up the system and were previously enabled by acpi_ev_initialize_gpe_block() or acpi_ev_update_gpes() (such a GPE should be disabled only once, because the initialization code enables it only once, but it may be pointed to by _PRW for multiple devices and that's why the additional function is necessary). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
421 lines
12 KiB
C
421 lines
12 KiB
C
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/******************************************************************************
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*
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* Name: acpixf.h - External interfaces to the ACPI subsystem
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2010, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#ifndef __ACXFACE_H__
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#define __ACXFACE_H__
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/* Current ACPICA subsystem version in YYYYMMDD format */
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#define ACPI_CA_VERSION 0x20100702
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#include "actypes.h"
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#include "actbl.h"
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extern u8 acpi_gbl_permanent_mmap;
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/*
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* Globals that are publically available, allowing for
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* run time configuration
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*/
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extern u32 acpi_dbg_level;
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extern u32 acpi_dbg_layer;
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extern u8 acpi_gbl_enable_interpreter_slack;
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extern u8 acpi_gbl_all_methods_serialized;
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extern u8 acpi_gbl_create_osi_method;
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extern u8 acpi_gbl_use_default_register_widths;
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extern acpi_name acpi_gbl_trace_method_name;
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extern u32 acpi_gbl_trace_flags;
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extern u8 acpi_gbl_enable_aml_debug_object;
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extern u8 acpi_gbl_copy_dsdt_locally;
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extern u8 acpi_gbl_truncate_io_addresses;
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extern u32 acpi_current_gpe_count;
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extern struct acpi_table_fadt acpi_gbl_FADT;
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extern u32 acpi_rsdt_forced;
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/*
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* Global interfaces
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*/
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acpi_status
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acpi_initialize_tables(struct acpi_table_desc *initial_storage,
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u32 initial_table_count, u8 allow_resize);
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acpi_status __init acpi_initialize_subsystem(void);
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acpi_status acpi_enable_subsystem(u32 flags);
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acpi_status acpi_initialize_objects(u32 flags);
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acpi_status acpi_terminate(void);
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#ifdef ACPI_FUTURE_USAGE
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acpi_status acpi_subsystem_status(void);
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#endif
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acpi_status acpi_enable(void);
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acpi_status acpi_disable(void);
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#ifdef ACPI_FUTURE_USAGE
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acpi_status acpi_get_system_info(struct acpi_buffer *ret_buffer);
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#endif
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const char *acpi_format_exception(acpi_status exception);
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acpi_status acpi_purge_cached_objects(void);
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/*
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* ACPI Memory management
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*/
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void *acpi_allocate(u32 size);
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void *acpi_callocate(u32 size);
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void acpi_free(void *address);
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/*
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* ACPI table manipulation interfaces
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*/
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acpi_status acpi_reallocate_root_table(void);
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acpi_status acpi_find_root_pointer(acpi_size *rsdp_address);
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acpi_status acpi_load_tables(void);
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acpi_status acpi_load_table(struct acpi_table_header *table_ptr);
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acpi_status acpi_unload_table_id(acpi_owner_id id);
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acpi_status
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acpi_get_table_header(acpi_string signature,
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u32 instance,
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struct acpi_table_header *out_table_header);
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acpi_status
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acpi_get_table_with_size(acpi_string signature,
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u32 instance, struct acpi_table_header **out_table,
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acpi_size *tbl_size);
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acpi_status
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acpi_get_table(acpi_string signature,
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u32 instance, struct acpi_table_header **out_table);
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acpi_status
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acpi_get_table_by_index(u32 table_index,
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struct acpi_table_header **out_table);
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acpi_status
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acpi_install_table_handler(acpi_tbl_handler handler, void *context);
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acpi_status acpi_remove_table_handler(acpi_tbl_handler handler);
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/*
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* Namespace and name interfaces
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*/
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acpi_status
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acpi_walk_namespace(acpi_object_type type,
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acpi_handle start_object,
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u32 max_depth,
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acpi_walk_callback pre_order_visit,
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acpi_walk_callback post_order_visit,
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void *context, void **return_value);
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acpi_status
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acpi_get_devices(const char *HID,
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acpi_walk_callback user_function,
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void *context, void **return_value);
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acpi_status
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acpi_get_name(acpi_handle object,
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u32 name_type, struct acpi_buffer *ret_path_ptr);
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acpi_status
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acpi_get_handle(acpi_handle parent,
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acpi_string pathname, acpi_handle * ret_handle);
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acpi_status
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acpi_attach_data(acpi_handle object, acpi_object_handler handler, void *data);
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acpi_status acpi_detach_data(acpi_handle object, acpi_object_handler handler);
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acpi_status
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acpi_get_data(acpi_handle object, acpi_object_handler handler, void **data);
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acpi_status
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acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags);
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/*
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* Object manipulation and enumeration
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*/
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acpi_status
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acpi_evaluate_object(acpi_handle object,
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acpi_string pathname,
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struct acpi_object_list *parameter_objects,
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struct acpi_buffer *return_object_buffer);
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acpi_status
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acpi_evaluate_object_typed(acpi_handle object,
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acpi_string pathname,
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struct acpi_object_list *external_params,
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struct acpi_buffer *return_buffer,
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acpi_object_type return_type);
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acpi_status
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acpi_get_object_info(acpi_handle object,
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struct acpi_device_info **return_buffer);
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acpi_status acpi_install_method(u8 *buffer);
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acpi_status
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acpi_get_next_object(acpi_object_type type,
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acpi_handle parent,
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acpi_handle child, acpi_handle * out_handle);
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acpi_status acpi_get_type(acpi_handle object, acpi_object_type * out_type);
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acpi_status acpi_get_id(acpi_handle object, acpi_owner_id * out_type);
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acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle);
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/*
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* Handler interfaces
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*/
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acpi_status
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acpi_install_initialization_handler(acpi_init_handler handler, u32 function);
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acpi_status
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acpi_install_fixed_event_handler(u32 acpi_event,
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acpi_event_handler handler, void *context);
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acpi_status
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acpi_remove_fixed_event_handler(u32 acpi_event, acpi_event_handler handler);
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acpi_status
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acpi_install_notify_handler(acpi_handle device,
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u32 handler_type,
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acpi_notify_handler handler, void *context);
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acpi_status
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acpi_remove_notify_handler(acpi_handle device,
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u32 handler_type, acpi_notify_handler handler);
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acpi_status
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acpi_install_address_space_handler(acpi_handle device,
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acpi_adr_space_type space_id,
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acpi_adr_space_handler handler,
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acpi_adr_space_setup setup, void *context);
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acpi_status
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acpi_remove_address_space_handler(acpi_handle device,
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acpi_adr_space_type space_id,
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acpi_adr_space_handler handler);
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acpi_status
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acpi_install_gpe_handler(acpi_handle gpe_device,
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u32 gpe_number,
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u32 type, acpi_event_handler address, void *context);
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acpi_status
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acpi_remove_gpe_handler(acpi_handle gpe_device,
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u32 gpe_number, acpi_event_handler address);
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#ifdef ACPI_FUTURE_USAGE
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acpi_status acpi_install_exception_handler(acpi_exception_handler handler);
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#endif
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/*
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* Event interfaces
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*/
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acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle);
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acpi_status acpi_release_global_lock(u32 handle);
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acpi_status acpi_enable_event(u32 event, u32 flags);
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acpi_status acpi_disable_event(u32 event, u32 flags);
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acpi_status acpi_clear_event(u32 event);
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acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status);
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/*
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* GPE Interfaces
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*/
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acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number);
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acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number);
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acpi_status acpi_gpe_can_wake(acpi_handle gpe_device, u32 gpe_number);
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acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number);
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acpi_status acpi_gpe_wakeup(acpi_handle gpe_device, u32 gpe_number, u8 action);
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acpi_status
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acpi_get_gpe_status(acpi_handle gpe_device,
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u32 gpe_number, acpi_event_status *event_status);
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acpi_status acpi_disable_all_gpes(void);
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acpi_status acpi_enable_all_runtime_gpes(void);
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acpi_status acpi_get_gpe_device(u32 gpe_index, acpi_handle *gpe_device);
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acpi_status
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acpi_install_gpe_block(acpi_handle gpe_device,
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struct acpi_generic_address *gpe_block_address,
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u32 register_count, u32 interrupt_number);
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acpi_status acpi_remove_gpe_block(acpi_handle gpe_device);
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/*
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* Resource interfaces
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*/
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typedef
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acpi_status(*acpi_walk_resource_callback) (struct acpi_resource * resource,
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void *context);
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acpi_status
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acpi_get_vendor_resource(acpi_handle device,
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char *name,
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struct acpi_vendor_uuid *uuid,
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struct acpi_buffer *ret_buffer);
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acpi_status
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acpi_get_current_resources(acpi_handle device, struct acpi_buffer *ret_buffer);
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#ifdef ACPI_FUTURE_USAGE
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acpi_status
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acpi_get_possible_resources(acpi_handle device, struct acpi_buffer *ret_buffer);
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#endif
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acpi_status
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acpi_walk_resources(acpi_handle device,
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char *name,
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acpi_walk_resource_callback user_function, void *context);
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acpi_status
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acpi_set_current_resources(acpi_handle device, struct acpi_buffer *in_buffer);
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acpi_status
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acpi_get_irq_routing_table(acpi_handle device, struct acpi_buffer *ret_buffer);
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acpi_status
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acpi_resource_to_address64(struct acpi_resource *resource,
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struct acpi_resource_address64 *out);
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/*
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* Hardware (ACPI device) interfaces
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*/
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acpi_status acpi_reset(void);
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acpi_status acpi_read_bit_register(u32 register_id, u32 *return_value);
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acpi_status acpi_write_bit_register(u32 register_id, u32 value);
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acpi_status acpi_set_firmware_waking_vector(u32 physical_address);
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#if ACPI_MACHINE_WIDTH == 64
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acpi_status acpi_set_firmware_waking_vector64(u64 physical_address);
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#endif
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acpi_status acpi_read(u64 *value, struct acpi_generic_address *reg);
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acpi_status acpi_write(u64 value, struct acpi_generic_address *reg);
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acpi_status
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acpi_get_sleep_type_data(u8 sleep_state, u8 * slp_typ_a, u8 * slp_typ_b);
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acpi_status acpi_enter_sleep_state_prep(u8 sleep_state);
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acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state);
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acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void);
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acpi_status acpi_leave_sleep_state_prep(u8 sleep_state);
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acpi_status acpi_leave_sleep_state(u8 sleep_state);
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/*
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* Error/Warning output
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*/
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void ACPI_INTERNAL_VAR_XFACE
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acpi_error(const char *module_name,
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u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
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void ACPI_INTERNAL_VAR_XFACE
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acpi_exception(const char *module_name,
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u32 line_number,
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acpi_status status, const char *format, ...) ACPI_PRINTF_LIKE(4);
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void ACPI_INTERNAL_VAR_XFACE
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acpi_warning(const char *module_name,
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u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
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void ACPI_INTERNAL_VAR_XFACE
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acpi_info(const char *module_name,
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u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
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/*
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* Debug output
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*/
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#ifdef ACPI_DEBUG_OUTPUT
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void ACPI_INTERNAL_VAR_XFACE
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acpi_debug_print(u32 requested_debug_level,
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u32 line_number,
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const char *function_name,
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const char *module_name,
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u32 component_id, const char *format, ...) ACPI_PRINTF_LIKE(6);
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void ACPI_INTERNAL_VAR_XFACE
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acpi_debug_print_raw(u32 requested_debug_level,
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u32 line_number,
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const char *function_name,
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const char *module_name,
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u32 component_id,
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const char *format, ...) ACPI_PRINTF_LIKE(6);
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#endif
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#endif /* __ACXFACE_H__ */
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