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drivers/acpi/acpica/evxfgpe.c
29.6 KB
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
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/****************************************************************************** * * Module Name: evxfgpe - External Interfaces for General Purpose Events (GPEs) * |
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* Copyright (C) 2000 - 2020, Intel Corp. |
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* |
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*****************************************************************************/ |
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#define EXPORT_ACPI_INTERFACES |
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#include <acpi/acpi.h> #include "accommon.h" #include "acevents.h" #include "acnamesp.h" #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evxfgpe") |
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#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ |
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/******************************************************************************* |
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* |
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* FUNCTION: acpi_update_all_gpes |
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* * PARAMETERS: None * |
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* RETURN: Status * * DESCRIPTION: Complete GPE initialization and enable all GPEs that have * associated _Lxx or _Exx methods and are not pointed to by any * device _PRW methods (this indicates that these GPEs are * generally intended for system or device wakeup. Such GPEs * have to be enabled directly when the devices whose _PRW * methods point to them are set up for wakeup signaling.) |
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* |
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* NOTE: Should be called after any GPEs are added to the system. Primarily, * after the system _PRW methods have been run, but also after a GPE Block * Device has been added or if any new GPE methods have been added via a * dynamic table load. |
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* ******************************************************************************/ |
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acpi_status acpi_update_all_gpes(void) |
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{ acpi_status status; |
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u8 is_polling_needed = FALSE; |
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ACPI_FUNCTION_TRACE(acpi_update_all_gpes); |
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status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); |
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} if (acpi_gbl_all_gpes_initialized) { goto unlock_and_exit; |
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} |
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status = acpi_ev_walk_gpe_list(acpi_ev_initialize_gpe_block, &is_polling_needed); |
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if (ACPI_SUCCESS(status)) { |
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acpi_gbl_all_gpes_initialized = TRUE; |
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} |
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unlock_and_exit: |
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(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); |
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if (is_polling_needed && acpi_gbl_all_gpes_initialized) { /* Poll GPEs to handle already triggered events */ acpi_ev_gpe_detect(acpi_gbl_gpe_xrupt_list_head); } |
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return_ACPI_STATUS(status); } |
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ACPI_EXPORT_SYMBOL(acpi_update_all_gpes) |
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/******************************************************************************* * * FUNCTION: acpi_enable_gpe * |
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* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block |
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* * RETURN: Status * * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is * hardware-enabled. * ******************************************************************************/ |
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acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) { acpi_status status = AE_BAD_PARAMETER; struct acpi_gpe_event_info *gpe_event_info; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_enable_gpe); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
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/* * Ensure that we have a valid GPE number and that there is some way * of handling the GPE (handler or a GPE method). In other words, we * won't allow a valid GPE to be enabled if there is no way to handle it. */ |
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gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (gpe_event_info) { |
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if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) != |
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ACPI_GPE_DISPATCH_NONE) { |
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status = acpi_ev_add_gpe_reference(gpe_event_info, TRUE); |
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if (ACPI_SUCCESS(status) && ACPI_GPE_IS_POLLING_NEEDED(gpe_event_info)) { /* Poll edge-triggered GPEs to handle existing events */ acpi_os_release_lock(acpi_gbl_gpe_lock, flags); (void)acpi_ev_detect_gpe(gpe_device, gpe_event_info, gpe_number); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); } |
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} else { status = AE_NO_HANDLER; } |
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} acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_enable_gpe) /******************************************************************************* * * FUNCTION: acpi_disable_gpe * * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block * * RETURN: Status * * DESCRIPTION: Remove a reference to a GPE. When the last reference is * removed, only then is the GPE disabled (for runtime GPEs), or * the GPE mask bit disabled (for wake GPEs) * ******************************************************************************/ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number) { acpi_status status = AE_BAD_PARAMETER; struct acpi_gpe_event_info *gpe_event_info; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_disable_gpe); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (gpe_event_info) { |
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status = acpi_ev_remove_gpe_reference(gpe_event_info) ; |
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} acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } |
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ACPI_EXPORT_SYMBOL(acpi_disable_gpe) |
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/******************************************************************************* * * FUNCTION: acpi_set_gpe * * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block * action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE * * RETURN: Status * * DESCRIPTION: Enable or disable an individual GPE. This function bypasses |
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* the reference count mechanism used in the acpi_enable_gpe(), * acpi_disable_gpe() interfaces. * This API is typically used by the GPE raw handler mode driver * to switch between the polling mode and the interrupt mode after * the driver has enabled the GPE. * The APIs should be invoked in this order: * acpi_enable_gpe() <- Ensure the reference count > 0 * acpi_set_gpe(ACPI_GPE_DISABLE) <- Enter polling mode * acpi_set_gpe(ACPI_GPE_ENABLE) <- Leave polling mode * acpi_disable_gpe() <- Decrease the reference count * * Note: If a GPE is shared by 2 silicon components, then both the drivers * should support GPE polling mode or disabling the GPE for long period * for one driver may break the other. So use it with care since all * firmware _Lxx/_Exx handlers currently rely on the GPE interrupt mode. |
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* ******************************************************************************/ acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action) { struct acpi_gpe_event_info *gpe_event_info; acpi_status status; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_set_gpe); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (!gpe_event_info) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } /* Perform the action */ switch (action) { case ACPI_GPE_ENABLE: |
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status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE); |
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gpe_event_info->disable_for_dispatch = FALSE; |
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break; case ACPI_GPE_DISABLE: status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE); |
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gpe_event_info->disable_for_dispatch = TRUE; |
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break; default: status = AE_BAD_PARAMETER; break; } unlock_and_exit: acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_set_gpe) |
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/******************************************************************************* * |
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* FUNCTION: acpi_mask_gpe * * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block * is_masked - Whether the GPE is masked or not * * RETURN: Status * * DESCRIPTION: Unconditionally mask/unmask the an individual GPE, ex., to * prevent a GPE flooding. * ******************************************************************************/ acpi_status acpi_mask_gpe(acpi_handle gpe_device, u32 gpe_number, u8 is_masked) { struct acpi_gpe_event_info *gpe_event_info; acpi_status status; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_mask_gpe); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (!gpe_event_info) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } status = acpi_ev_mask_gpe(gpe_event_info, is_masked); unlock_and_exit: acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_mask_gpe) /******************************************************************************* * |
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* FUNCTION: acpi_mark_gpe_for_wake * * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block * * RETURN: Status * * DESCRIPTION: Mark a GPE as having the ability to wake the system. Simply * sets the ACPI_GPE_CAN_WAKE flag. * * Some potential callers of acpi_setup_gpe_for_wake may know in advance that * there won't be any notify handlers installed for device wake notifications * from the given GPE (one example is a button GPE in Linux). For these cases, * acpi_mark_gpe_for_wake should be used instead of acpi_setup_gpe_for_wake. * This will set the ACPI_GPE_CAN_WAKE flag for the GPE without trying to * setup implicit wake notification for it (since there's no handler method). * ******************************************************************************/ acpi_status acpi_mark_gpe_for_wake(acpi_handle gpe_device, u32 gpe_number) { struct acpi_gpe_event_info *gpe_event_info; acpi_status status = AE_BAD_PARAMETER; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_mark_gpe_for_wake); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (gpe_event_info) { /* Mark the GPE as a possible wake event */ gpe_event_info->flags |= ACPI_GPE_CAN_WAKE; status = AE_OK; } acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_mark_gpe_for_wake) /******************************************************************************* * |
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* FUNCTION: acpi_setup_gpe_for_wake |
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* |
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* PARAMETERS: wake_device - Device associated with the GPE (via _PRW) * gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block |
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* * RETURN: Status * |
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* DESCRIPTION: Mark a GPE as having the ability to wake the system. This * interface is intended to be used as the host executes the * _PRW methods (Power Resources for Wake) in the system tables. * Each _PRW appears under a Device Object (The wake_device), and * contains the info for the wake GPE associated with the * wake_device. |
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* ******************************************************************************/ |
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acpi_status acpi_setup_gpe_for_wake(acpi_handle wake_device, acpi_handle gpe_device, u32 gpe_number) |
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{ |
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acpi_status status; |
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struct acpi_gpe_event_info *gpe_event_info; |
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struct acpi_namespace_node *device_node; |
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struct acpi_gpe_notify_info *notify; struct acpi_gpe_notify_info *new_notify; |
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acpi_cpu_flags flags; |
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ACPI_FUNCTION_TRACE(acpi_setup_gpe_for_wake); |
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/* Parameter Validation */ if (!wake_device) { /* * By forcing wake_device to be valid, we automatically enable the * implicit notify feature on all hosts. */ return_ACPI_STATUS(AE_BAD_PARAMETER); } |
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/* Handle root object case */ if (wake_device == ACPI_ROOT_OBJECT) { device_node = acpi_gbl_root_node; } else { |
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device_node = ACPI_CAST_PTR(struct acpi_namespace_node, wake_device); |
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} |
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/* Validate wake_device is of type Device */ |
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if (device_node->type != ACPI_TYPE_DEVICE) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Allocate a new notify object up front, in case it is needed. * Memory allocation while holding a spinlock is a big no-no * on some hosts. */ new_notify = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_notify_info)); if (!new_notify) { return_ACPI_STATUS(AE_NO_MEMORY); } |
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); |
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if (!gpe_event_info) { |
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status = AE_BAD_PARAMETER; |
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goto unlock_and_exit; } |
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/* * If there is no method or handler for this GPE, then the |
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* wake_device will be notified whenever this GPE fires. This is * known as an "implicit notify". Note: The GPE is assumed to be |
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* level-triggered (for windows compatibility). */ |
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if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == |
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ACPI_GPE_DISPATCH_NONE) { /* * This is the first device for implicit notify on this GPE. * Just set the flags here, and enter the NOTIFY block below. */ gpe_event_info->flags = (ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED); |
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} else if (gpe_event_info->flags & ACPI_GPE_AUTO_ENABLED) { /* * A reference to this GPE has been added during the GPE block * initialization, so drop it now to prevent the GPE from being * permanently enabled and clear its ACPI_GPE_AUTO_ENABLED flag. */ (void)acpi_ev_remove_gpe_reference(gpe_event_info); gpe_event_info->flags &= ~ACPI_GPE_AUTO_ENABLED; |
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} |
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/* * If we already have an implicit notify on this GPE, add * this device to the notify list. */ |
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if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == |
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ACPI_GPE_DISPATCH_NOTIFY) { /* Ensure that the device is not already in the list */ notify = gpe_event_info->dispatch.notify_list; while (notify) { if (notify->device_node == device_node) { status = AE_ALREADY_EXISTS; goto unlock_and_exit; } notify = notify->next; |
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} |
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/* Add this device to the notify list for this GPE */ new_notify->device_node = device_node; new_notify->next = gpe_event_info->dispatch.notify_list; gpe_event_info->dispatch.notify_list = new_notify; new_notify = NULL; |
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} |
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/* Mark the GPE as a possible wake event */ |
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gpe_event_info->flags |= ACPI_GPE_CAN_WAKE; status = AE_OK; |
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unlock_and_exit: |
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acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
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/* Delete the notify object if it was not used above */ if (new_notify) { ACPI_FREE(new_notify); } |
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return_ACPI_STATUS(status); } |
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ACPI_EXPORT_SYMBOL(acpi_setup_gpe_for_wake) |
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/******************************************************************************* * |
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* FUNCTION: acpi_set_gpe_wake_mask |
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* * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block |
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* action - Enable or Disable |
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* * RETURN: Status * |
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* DESCRIPTION: Set or clear the GPE's wakeup enable mask bit. The GPE must * already be marked as a WAKE GPE. |
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* ******************************************************************************/ |
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acpi_status acpi_set_gpe_wake_mask(acpi_handle gpe_device, u32 gpe_number, u8 action) |
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{ acpi_status status = AE_OK; struct acpi_gpe_event_info *gpe_event_info; struct acpi_gpe_register_info *gpe_register_info; acpi_cpu_flags flags; u32 register_bit; |
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ACPI_FUNCTION_TRACE(acpi_set_gpe_wake_mask); |
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
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/* * Ensure that we have a valid GPE number and that this GPE is in * fact a wake GPE */ |
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gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); |
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if (!gpe_event_info) { |
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status = AE_BAD_PARAMETER; goto unlock_and_exit; } |
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if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) { status = AE_TYPE; goto unlock_and_exit; } |
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gpe_register_info = gpe_event_info->register_info; if (!gpe_register_info) { status = AE_NOT_EXIST; goto unlock_and_exit; } |
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register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info); |
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/* Perform the action */ switch (action) { case ACPI_GPE_ENABLE: |
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ACPI_SET_BIT(gpe_register_info->enable_for_wake, (u8)register_bit); break; case ACPI_GPE_DISABLE: |
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3cfd53d53 ACPICA: Move GPE ... |
512 513 514 515 516 |
ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, (u8)register_bit); break; default: |
1d1ea1b72 ACPICA: Standardi... |
517 |
|
3cfd53d53 ACPICA: Move GPE ... |
518 519 520 521 522 523 524 525 526 |
ACPI_ERROR((AE_INFO, "%u, Invalid action", action)); status = AE_BAD_PARAMETER; break; } unlock_and_exit: acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } |
3a37898d5 ACPICA: Rename so... |
527 |
ACPI_EXPORT_SYMBOL(acpi_set_gpe_wake_mask) |
3cfd53d53 ACPICA: Move GPE ... |
528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 |
/******************************************************************************* * * FUNCTION: acpi_clear_gpe * * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block * * RETURN: Status * * DESCRIPTION: Clear an ACPI event (general purpose) * ******************************************************************************/ acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number) { acpi_status status = AE_OK; struct acpi_gpe_event_info *gpe_event_info; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_clear_gpe); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (!gpe_event_info) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } status = acpi_hw_clear_gpe(gpe_event_info); unlock_and_exit: acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_clear_gpe) /******************************************************************************* * * FUNCTION: acpi_get_gpe_status * |
f19f1a7e1 ACPICA: Events: R... |
572 573 |
* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block |
75c8044fb ACPICA: Cleanup u... |
574 575 |
* event_status - Where the current status of the event * will be returned |
3cfd53d53 ACPICA: Move GPE ... |
576 577 578 |
* * RETURN: Status * |
da5033737 ACPICA: Misc comm... |
579 |
* DESCRIPTION: Get the current status of a GPE (signalled/not_signalled) |
3cfd53d53 ACPICA: Move GPE ... |
580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 |
* ******************************************************************************/ acpi_status acpi_get_gpe_status(acpi_handle gpe_device, u32 gpe_number, acpi_event_status *event_status) { acpi_status status = AE_OK; struct acpi_gpe_event_info *gpe_event_info; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_get_gpe_status); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (!gpe_event_info) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } /* Obtain status on the requested GPE number */ status = acpi_hw_get_gpe_status(gpe_event_info, event_status); |
10622bf8c ACPICA: Linuxize:... |
605 |
unlock_and_exit: |
3cfd53d53 ACPICA: Move GPE ... |
606 607 608 609 610 |
acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_get_gpe_status) |
eb3d80f72 ACPICA: Events: I... |
611 612 |
/******************************************************************************* * |
745364533 ACPICA: Introduce... |
613 614 615 616 617 |
* FUNCTION: acpi_gispatch_gpe * * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 * gpe_number - GPE level within the GPE block * |
6921de898 ACPICA: Return u3... |
618 |
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED |
745364533 ACPICA: Introduce... |
619 620 621 622 623 |
* * DESCRIPTION: Detect and dispatch a General Purpose Event to either a function * (e.g. EC) or method (e.g. _Lxx/_Exx) handler. * ******************************************************************************/ |
6921de898 ACPICA: Return u3... |
624 |
u32 acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number) |
745364533 ACPICA: Introduce... |
625 626 |
{ ACPI_FUNCTION_TRACE(acpi_dispatch_gpe); |
6921de898 ACPICA: Return u3... |
627 |
return acpi_ev_detect_gpe(gpe_device, NULL, gpe_number); |
745364533 ACPICA: Introduce... |
628 629 630 631 632 633 |
} ACPI_EXPORT_SYMBOL(acpi_dispatch_gpe) /******************************************************************************* * |
eb3d80f72 ACPICA: Events: I... |
634 635 636 637 638 639 640 641 |
* FUNCTION: acpi_finish_gpe * * PARAMETERS: gpe_device - Namespace node for the GPE Block * (NULL for FADT defined GPEs) * gpe_number - GPE level within the GPE block * * RETURN: Status * |
c163f90cc ACPI/ACPICA: Triv... |
642 |
* DESCRIPTION: Clear and conditionally re-enable a GPE. This completes the GPE |
eb3d80f72 ACPICA: Events: I... |
643 |
* processing. Intended for use by asynchronous host-installed |
c163f90cc ACPI/ACPICA: Triv... |
644 |
* GPE handlers. The GPE is only re-enabled if the enable_for_run bit |
eb3d80f72 ACPICA: Events: I... |
645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 |
* is set in the GPE info. * ******************************************************************************/ acpi_status acpi_finish_gpe(acpi_handle gpe_device, u32 gpe_number) { struct acpi_gpe_event_info *gpe_event_info; acpi_status status; acpi_cpu_flags flags; ACPI_FUNCTION_TRACE(acpi_finish_gpe); flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); /* Ensure that we have a valid GPE number */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (!gpe_event_info) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } status = acpi_ev_finish_gpe(gpe_event_info); unlock_and_exit: acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_finish_gpe) |
3cfd53d53 ACPICA: Move GPE ... |
674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 |
/****************************************************************************** * * FUNCTION: acpi_disable_all_gpes * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Disable and clear all GPEs in all GPE blocks * ******************************************************************************/ acpi_status acpi_disable_all_gpes(void) { acpi_status status; ACPI_FUNCTION_TRACE(acpi_disable_all_gpes); status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } status = acpi_hw_disable_all_gpes(); (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); return_ACPI_STATUS(status); } |
3a37898d5 ACPICA: Rename so... |
702 |
ACPI_EXPORT_SYMBOL(acpi_disable_all_gpes) |
3cfd53d53 ACPICA: Move GPE ... |
703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 |
/****************************************************************************** * * FUNCTION: acpi_enable_all_runtime_gpes * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks * ******************************************************************************/ acpi_status acpi_enable_all_runtime_gpes(void) { acpi_status status; ACPI_FUNCTION_TRACE(acpi_enable_all_runtime_gpes); status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } status = acpi_hw_enable_all_runtime_gpes(); (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); return_ACPI_STATUS(status); } |
3a37898d5 ACPICA: Rename so... |
731 |
ACPI_EXPORT_SYMBOL(acpi_enable_all_runtime_gpes) |
e0fa975d8 ACPICA: Introduce... |
732 733 734 735 736 737 738 739 740 741 742 743 |
/****************************************************************************** * * FUNCTION: acpi_enable_all_wakeup_gpes * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Enable all "wakeup" GPEs and disable all of the other GPEs, in * all GPE blocks. * ******************************************************************************/ |
e0fa975d8 ACPICA: Introduce... |
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 |
acpi_status acpi_enable_all_wakeup_gpes(void) { acpi_status status; ACPI_FUNCTION_TRACE(acpi_enable_all_wakeup_gpes); status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } status = acpi_hw_enable_all_wakeup_gpes(); (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_enable_all_wakeup_gpes) |
ea128834d ACPICA: Introduce... |
762 763 764 765 |
/****************************************************************************** * * FUNCTION: acpi_any_gpe_status_set * |
0ce792d66 ACPICA: Allow acp... |
766 |
* PARAMETERS: gpe_skip_number - Number of the GPE to skip |
ea128834d ACPICA: Introduce... |
767 768 769 |
* * RETURN: Whether or not the status bit is set for any GPE * |
0ce792d66 ACPICA: Allow acp... |
770 771 772 |
* DESCRIPTION: Check the status bits of all enabled GPEs, except for the one * represented by the "skip" argument, and return TRUE if any of * them is set or FALSE otherwise. |
ea128834d ACPICA: Introduce... |
773 774 |
* ******************************************************************************/ |
0ce792d66 ACPICA: Allow acp... |
775 |
u32 acpi_any_gpe_status_set(u32 gpe_skip_number) |
ea128834d ACPICA: Introduce... |
776 777 |
{ acpi_status status; |
0ce792d66 ACPICA: Allow acp... |
778 |
acpi_handle gpe_device; |
ea128834d ACPICA: Introduce... |
779 780 781 782 783 784 785 786 |
u8 ret; ACPI_FUNCTION_TRACE(acpi_any_gpe_status_set); status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); if (ACPI_FAILURE(status)) { return (FALSE); } |
0ce792d66 ACPICA: Allow acp... |
787 788 789 790 791 792 |
status = acpi_get_gpe_device(gpe_skip_number, &gpe_device); if (ACPI_FAILURE(status)) { gpe_device = NULL; } ret = acpi_hw_check_all_gpes(gpe_device, gpe_skip_number); |
ea128834d ACPICA: Introduce... |
793 794 795 796 797 798 |
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); return (ret); } ACPI_EXPORT_SYMBOL(acpi_any_gpe_status_set) |
3cfd53d53 ACPICA: Move GPE ... |
799 800 801 802 803 |
/******************************************************************************* * * FUNCTION: acpi_install_gpe_block * * PARAMETERS: gpe_device - Handle to the parent GPE Block Device |
ba494beea ACPICA: AcpiSrc: ... |
804 |
* gpe_block_address - Address and space_ID |
3cfd53d53 ACPICA: Move GPE ... |
805 806 807 808 809 |
* register_count - Number of GPE register pairs in the block * interrupt_number - H/W interrupt for the block * * RETURN: Status * |
da5033737 ACPICA: Misc comm... |
810 811 |
* DESCRIPTION: Create and Install a block of GPE registers. The GPEs are not * enabled here. |
3cfd53d53 ACPICA: Move GPE ... |
812 813 814 815 816 817 818 |
* ******************************************************************************/ acpi_status acpi_install_gpe_block(acpi_handle gpe_device, struct acpi_generic_address *gpe_block_address, u32 register_count, u32 interrupt_number) { |
3a37898d5 ACPICA: Rename so... |
819 |
acpi_status status; |
3cfd53d53 ACPICA: Move GPE ... |
820 821 822 823 824 825 826 827 828 829 830 831 |
union acpi_operand_object *obj_desc; struct acpi_namespace_node *node; struct acpi_gpe_block_info *gpe_block; ACPI_FUNCTION_TRACE(acpi_install_gpe_block); if ((!gpe_device) || (!gpe_block_address) || (!register_count)) { return_ACPI_STATUS(AE_BAD_PARAMETER); } status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { |
68aafc351 ACPICA: Audit/upd... |
832 |
return_ACPI_STATUS(status); |
3cfd53d53 ACPICA: Move GPE ... |
833 834 835 836 837 838 839 |
} node = acpi_ns_validate_handle(gpe_device); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } |
9186fb580 ACPICA: Improve p... |
840 841 842 843 844 845 846 847 848 849 850 |
/* Validate the parent device */ if (node->type != ACPI_TYPE_DEVICE) { status = AE_TYPE; goto unlock_and_exit; } if (node->object) { status = AE_ALREADY_EXISTS; goto unlock_and_exit; } |
3cfd53d53 ACPICA: Move GPE ... |
851 852 853 854 |
/* * For user-installed GPE Block Devices, the gpe_block_base_number * is always zero */ |
7505da4c3 ACPICA: Events: U... |
855 856 857 858 |
status = acpi_ev_create_gpe_block(node, gpe_block_address->address, gpe_block_address->space_id, register_count, 0, interrupt_number, &gpe_block); |
3cfd53d53 ACPICA: Move GPE ... |
859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 |
if (ACPI_FAILURE(status)) { goto unlock_and_exit; } /* Install block in the device_object attached to the node */ obj_desc = acpi_ns_get_attached_object(node); if (!obj_desc) { /* * No object, create a new one (Device nodes do not always have * an attached object) */ obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_DEVICE); if (!obj_desc) { status = AE_NO_MEMORY; goto unlock_and_exit; } status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_DEVICE); /* Remove local reference to the object */ acpi_ut_remove_reference(obj_desc); if (ACPI_FAILURE(status)) { goto unlock_and_exit; } } /* Now install the GPE block in the device_object */ obj_desc->device.gpe_block = gpe_block; |
10622bf8c ACPICA: Linuxize:... |
893 |
unlock_and_exit: |
3cfd53d53 ACPICA: Move GPE ... |
894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 |
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_install_gpe_block) /******************************************************************************* * * FUNCTION: acpi_remove_gpe_block * * PARAMETERS: gpe_device - Handle to the parent GPE Block Device * * RETURN: Status * * DESCRIPTION: Remove a previously installed block of GPE registers * ******************************************************************************/ acpi_status acpi_remove_gpe_block(acpi_handle gpe_device) { union acpi_operand_object *obj_desc; acpi_status status; struct acpi_namespace_node *node; ACPI_FUNCTION_TRACE(acpi_remove_gpe_block); if (!gpe_device) { return_ACPI_STATUS(AE_BAD_PARAMETER); } status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { |
68aafc351 ACPICA: Audit/upd... |
925 |
return_ACPI_STATUS(status); |
3cfd53d53 ACPICA: Move GPE ... |
926 927 928 929 930 931 932 |
} node = acpi_ns_validate_handle(gpe_device); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; } |
9186fb580 ACPICA: Improve p... |
933 934 935 936 937 938 |
/* Validate the parent device */ if (node->type != ACPI_TYPE_DEVICE) { status = AE_TYPE; goto unlock_and_exit; } |
3cfd53d53 ACPICA: Move GPE ... |
939 940 941 942 943 944 945 946 947 948 949 950 951 |
/* Get the device_object attached to the node */ obj_desc = acpi_ns_get_attached_object(node); if (!obj_desc || !obj_desc->device.gpe_block) { return_ACPI_STATUS(AE_NULL_OBJECT); } /* Delete the GPE block (but not the device_object) */ status = acpi_ev_delete_gpe_block(obj_desc->device.gpe_block); if (ACPI_SUCCESS(status)) { obj_desc->device.gpe_block = NULL; } |
10622bf8c ACPICA: Linuxize:... |
952 |
unlock_and_exit: |
3cfd53d53 ACPICA: Move GPE ... |
953 954 955 956 957 958 959 960 961 962 |
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_remove_gpe_block) /******************************************************************************* * * FUNCTION: acpi_get_gpe_device * |
ba494beea ACPICA: AcpiSrc: ... |
963 |
* PARAMETERS: index - System GPE index (0-current_gpe_count) |
3cfd53d53 ACPICA: Move GPE ... |
964 965 966 967 968 969 970 971 972 |
* gpe_device - Where the parent GPE Device is returned * * RETURN: Status * * DESCRIPTION: Obtain the GPE device associated with the input index. A NULL * gpe device indicates that the gpe number is contained in one of * the FADT-defined gpe blocks. Otherwise, the GPE block device. * ******************************************************************************/ |
f5c1e1c5a ACPICA: Divergenc... |
973 |
acpi_status acpi_get_gpe_device(u32 index, acpi_handle *gpe_device) |
3cfd53d53 ACPICA: Move GPE ... |
974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 |
{ struct acpi_gpe_device_info info; acpi_status status; ACPI_FUNCTION_TRACE(acpi_get_gpe_device); if (!gpe_device) { return_ACPI_STATUS(AE_BAD_PARAMETER); } if (index >= acpi_current_gpe_count) { return_ACPI_STATUS(AE_NOT_EXIST); } /* Setup and walk the GPE list */ info.index = index; info.status = AE_NOT_EXIST; info.gpe_device = NULL; info.next_block_base_index = 0; status = acpi_ev_walk_gpe_list(acpi_ev_get_gpe_device, &info); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } |
3a37898d5 ACPICA: Rename so... |
999 |
*gpe_device = ACPI_CAST_PTR(acpi_handle, info.gpe_device); |
3cfd53d53 ACPICA: Move GPE ... |
1000 1001 1002 1003 |
return_ACPI_STATUS(info.status); } ACPI_EXPORT_SYMBOL(acpi_get_gpe_device) |
33620c541 ACPICA: Support f... |
1004 |
#endif /* !ACPI_REDUCED_HARDWARE */ |