forked from Minki/linux
44758bafa5
ACPI GPEs (other than the EC one) can be enabled in two situations.
First, the GPEs with existing _Lxx and _Exx methods are enabled
implicitly by ACPICA during system initialization. Second, the
GPEs without these methods (like GPEs listed by _PRW objects for
wakeup devices) need to be enabled directly by the code that is
going to use them (e.g. ACPI power management or device drivers).
In the former case, if the status of a given GPE is set to start
with, its handler method (either _Lxx or _Exx) needs to be invoked
to take care of the events (possibly) signaled before the GPE was
enabled. In the latter case, however, the first caller of
acpi_enable_gpe() for a given GPE should not be expected to care
about any events that might be signaled through it earlier. In
that case, it is better to clear the status of the GPE before
enabling it, to prevent stale events from triggering unwanted
actions (like spurious system resume, for example).
For this reason, modify acpi_ev_add_gpe_reference() to take an
additional boolean argument indicating whether or not the GPE
status needs to be cleared when its reference counter changes from
zero to one and make acpi_enable_gpe() pass TRUE to it through
that new argument.
Fixes: 18996f2db9 ("ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume")
Reported-by: Furquan Shaikh <furquan@google.com>
Tested-by: Furquan Shaikh <furquan@google.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
248 lines
6.8 KiB
C
248 lines
6.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
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/******************************************************************************
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*
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* Name: acevents.h - Event subcomponent prototypes and defines
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*
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* Copyright (C) 2000 - 2019, Intel Corp.
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*
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*****************************************************************************/
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#ifndef __ACEVENTS_H__
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#define __ACEVENTS_H__
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/*
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* Conditions to trigger post enabling GPE polling:
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* It is not sufficient to trigger edge-triggered GPE with specific GPE
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* chips, software need to poll once after enabling.
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*/
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#ifdef ACPI_USE_GPE_POLLING
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#define ACPI_GPE_IS_POLLING_NEEDED(__gpe__) \
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((__gpe__)->runtime_count == 1 && \
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(__gpe__)->flags & ACPI_GPE_INITIALIZED && \
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((__gpe__)->flags & ACPI_GPE_XRUPT_TYPE_MASK) == ACPI_GPE_EDGE_TRIGGERED)
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#else
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#define ACPI_GPE_IS_POLLING_NEEDED(__gpe__) FALSE
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#endif
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/*
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* evevent
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*/
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acpi_status acpi_ev_initialize_events(void);
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acpi_status acpi_ev_install_xrupt_handlers(void);
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u32 acpi_ev_fixed_event_detect(void);
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/*
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* evmisc
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*/
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u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node);
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u32 acpi_ev_get_gpe_number_index(u32 gpe_number);
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acpi_status
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acpi_ev_queue_notify_request(struct acpi_namespace_node *node,
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u32 notify_value);
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/*
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* evglock - Global Lock support
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*/
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acpi_status acpi_ev_init_global_lock_handler(void);
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ACPI_HW_DEPENDENT_RETURN_OK(acpi_status
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acpi_ev_acquire_global_lock(u16 timeout))
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ACPI_HW_DEPENDENT_RETURN_OK(acpi_status acpi_ev_release_global_lock(void))
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acpi_status acpi_ev_remove_global_lock_handler(void);
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/*
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* evgpe - Low-level GPE support
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*/
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u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
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acpi_status
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acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info);
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acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
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acpi_status
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acpi_ev_mask_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 is_masked);
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acpi_status
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acpi_ev_add_gpe_reference(struct acpi_gpe_event_info *gpe_event_info,
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u8 clear_on_enable);
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acpi_status
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acpi_ev_remove_gpe_reference(struct acpi_gpe_event_info *gpe_event_info);
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struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
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u32 gpe_number);
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struct acpi_gpe_event_info *acpi_ev_low_get_gpe_info(u32 gpe_number,
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struct acpi_gpe_block_info
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*gpe_block);
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acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info);
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u32
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acpi_ev_detect_gpe(struct acpi_namespace_node *gpe_device,
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struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number);
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/*
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* evgpeblk - Upper-level GPE block support
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*/
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acpi_status
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acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
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u64 address,
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u8 space_id,
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u32 register_count,
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u16 gpe_block_base_number,
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u32 interrupt_number,
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struct acpi_gpe_block_info **return_gpe_block);
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acpi_status
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acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
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struct acpi_gpe_block_info *gpe_block,
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void *context);
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ACPI_HW_DEPENDENT_RETURN_OK(acpi_status
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acpi_ev_delete_gpe_block(struct acpi_gpe_block_info
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*gpe_block))
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u32
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acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
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struct acpi_gpe_event_info *gpe_event_info,
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u32 gpe_number);
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/*
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* evgpeinit - GPE initialization and update
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*/
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acpi_status acpi_ev_gpe_initialize(void);
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ACPI_HW_DEPENDENT_RETURN_VOID(void
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acpi_ev_update_gpes(acpi_owner_id table_owner_id))
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acpi_status
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acpi_ev_match_gpe_method(acpi_handle obj_handle,
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u32 level, void *context, void **return_value);
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/*
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* evgpeutil - GPE utilities
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*/
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acpi_status
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acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
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acpi_status
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acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
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struct acpi_gpe_block_info *gpe_block, void *context);
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acpi_status
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acpi_ev_get_gpe_xrupt_block(u32 interrupt_number,
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struct acpi_gpe_xrupt_info **gpe_xrupt_block);
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acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt);
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acpi_status
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acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
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struct acpi_gpe_block_info *gpe_block,
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void *context);
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/*
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* evhandler - Address space handling
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*/
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union acpi_operand_object *acpi_ev_find_region_handler(acpi_adr_space_type
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space_id,
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union acpi_operand_object
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*handler_obj);
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u8
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acpi_ev_has_default_handler(struct acpi_namespace_node *node,
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acpi_adr_space_type space_id);
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acpi_status acpi_ev_install_region_handlers(void);
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acpi_status
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acpi_ev_install_space_handler(struct acpi_namespace_node *node,
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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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/*
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* evregion - Operation region support
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*/
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acpi_status acpi_ev_initialize_op_regions(void);
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acpi_status
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acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
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union acpi_operand_object *field_obj,
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u32 function,
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u32 region_offset, u32 bit_width, u64 *value);
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acpi_status
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acpi_ev_attach_region(union acpi_operand_object *handler_obj,
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union acpi_operand_object *region_obj,
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u8 acpi_ns_is_locked);
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void
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acpi_ev_detach_region(union acpi_operand_object *region_obj,
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u8 acpi_ns_is_locked);
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void
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acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
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acpi_adr_space_type space_id, u32 function);
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acpi_status
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acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function);
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/*
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* evregini - Region initialization and setup
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*/
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acpi_status
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acpi_ev_system_memory_region_setup(acpi_handle handle,
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u32 function,
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void *handler_context,
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void **region_context);
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acpi_status
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acpi_ev_io_space_region_setup(acpi_handle handle,
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u32 function,
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void *handler_context, void **region_context);
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acpi_status
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acpi_ev_pci_config_region_setup(acpi_handle handle,
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u32 function,
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void *handler_context, void **region_context);
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acpi_status
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acpi_ev_cmos_region_setup(acpi_handle handle,
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u32 function,
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void *handler_context, void **region_context);
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acpi_status
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acpi_ev_pci_bar_region_setup(acpi_handle handle,
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u32 function,
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void *handler_context, void **region_context);
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acpi_status
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acpi_ev_default_region_setup(acpi_handle handle,
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u32 function,
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void *handler_context, void **region_context);
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acpi_status acpi_ev_initialize_region(union acpi_operand_object *region_obj);
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u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node);
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/*
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* evsci - SCI (System Control Interrupt) handling/dispatch
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*/
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u32 ACPI_SYSTEM_XFACE acpi_ev_gpe_xrupt_handler(void *context);
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u32 acpi_ev_sci_dispatch(void);
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u32 acpi_ev_install_sci_handler(void);
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acpi_status acpi_ev_remove_all_sci_handlers(void);
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ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_ev_terminate(void))
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#endif /* __ACEVENTS_H__ */
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