cregit-Linux how code gets into the kernel

Release 4.11 drivers/acpi/acpica/evmisc.c

/******************************************************************************
 *
 * Module Name: evmisc - Miscellaneous event manager support functions
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2017, 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.
 */

#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"


#define _COMPONENT          ACPI_EVENTS
ACPI_MODULE_NAME("evmisc")

/* Local prototypes */
static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context);

/*******************************************************************************
 *
 * FUNCTION:    acpi_ev_is_notify_object
 *
 * PARAMETERS:  node            - Node to check
 *
 * RETURN:      TRUE if notifies allowed on this object
 *
 * DESCRIPTION: Check type of node for a object that supports notifies.
 *
 *              TBD: This could be replaced by a flag bit in the node.
 *
 ******************************************************************************/


u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node) { switch (node->type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: /* * These are the ONLY objects that can receive ACPI notifications */ return (TRUE); default: return (FALSE); } }

Contributors

PersonTokensPropCommitsCommitProp
Andy Grover3897.44%266.67%
Len Brown12.56%133.33%
Total39100.00%3100.00%

/******************************************************************************* * * FUNCTION: acpi_ev_queue_notify_request * * PARAMETERS: node - NS node for the notified object * notify_value - Value from the Notify() request * * RETURN: Status * * DESCRIPTION: Dispatch a device notification event to a previously * installed handler. * ******************************************************************************/
acpi_status acpi_ev_queue_notify_request(struct acpi_namespace_node *node, u32 notify_value) { union acpi_operand_object *obj_desc; union acpi_operand_object *handler_list_head = NULL; union acpi_generic_state *info; u8 handler_list_id = 0; acpi_status status = AE_OK; ACPI_FUNCTION_NAME(ev_queue_notify_request); /* Are Notifies allowed on this object? */ if (!acpi_ev_is_notify_object(node)) { return (AE_TYPE); } /* Get the correct notify list type (System or Device) */ if (notify_value <= ACPI_MAX_SYS_NOTIFY) { handler_list_id = ACPI_SYSTEM_HANDLER_LIST; } else { handler_list_id = ACPI_DEVICE_HANDLER_LIST; } /* Get the notify object attached to the namespace Node */ obj_desc = acpi_ns_get_attached_object(node); if (obj_desc) { /* We have an attached object, Get the correct handler list */ handler_list_head = obj_desc->common_notify.notify_list[handler_list_id]; } /* * If there is no notify handler (Global or Local) * for this object, just ignore the notify */ if (!acpi_gbl_global_notify[handler_list_id].handler && !handler_list_head) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No notify handler for Notify, ignoring (%4.4s, %X) node %p\n", acpi_ut_get_node_name(node), notify_value, node)); return (AE_OK); } /* Setup notify info and schedule the notify dispatcher */ info = acpi_ut_create_generic_state(); if (!info) { return (AE_NO_MEMORY); } info->common.descriptor_type = ACPI_DESC_TYPE_STATE_NOTIFY; info->notify.node = node; info->notify.value = (u16)notify_value; info->notify.handler_list_id = handler_list_id; info->notify.handler_list_head = handler_list_head; info->notify.global = &acpi_gbl_global_notify[handler_list_id]; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n", acpi_ut_get_node_name(node), acpi_ut_get_type_name(node->type), notify_value, acpi_ut_get_notify_name(notify_value, ACPI_TYPE_ANY), node)); status = acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_notify_dispatch, info); if (ACPI_FAILURE(status)) { acpi_ut_delete_generic_state(info); } return (status); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore13849.11%433.33%
Linus Torvalds8429.89%325.00%
Rui Zhang238.19%18.33%
Len Brown176.05%18.33%
Linus Torvalds (pre-git)134.63%18.33%
Andy Grover62.14%216.67%
Total281100.00%12100.00%

/******************************************************************************* * * FUNCTION: acpi_ev_notify_dispatch * * PARAMETERS: context - To be passed to the notify handler * * RETURN: None. * * DESCRIPTION: Dispatch a device notification event to a previously * installed handler. * ******************************************************************************/
static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context) { union acpi_generic_state *info = (union acpi_generic_state *)context; union acpi_operand_object *handler_obj; ACPI_FUNCTION_ENTRY(); /* Invoke a global notify handler if installed */ if (info->notify.global->handler) { info->notify.global->handler(info->notify.node, info->notify.value, info->notify.global->context); } /* Now invoke the local notify handler(s) if any are installed */ handler_obj = info->notify.handler_list_head; while (handler_obj) { handler_obj->notify.handler(info->notify.node, info->notify.value, handler_obj->notify.context); handler_obj = handler_obj->notify.next[info->notify.handler_list_id]; } /* All done with the info object */ acpi_ut_delete_generic_state(info); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds5339.55%222.22%
Robert Moore4231.34%222.22%
Linus Torvalds (pre-git)2820.90%111.11%
Andy Grover64.48%333.33%
Rafael J. Wysocki53.73%111.11%
Total134100.00%9100.00%

#if (!ACPI_REDUCED_HARDWARE) /****************************************************************************** * * FUNCTION: acpi_ev_terminate * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: Disable events and free memory allocated for table storage. * ******************************************************************************/
void acpi_ev_terminate(void) { u32 i; acpi_status status; ACPI_FUNCTION_TRACE(ev_terminate); if (acpi_gbl_events_initialized) { /* * Disable all event-related functionality. In all cases, on error, * print a message but obviously we don't abort. */ /* Disable all fixed events */ for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { status = acpi_disable_event(i, 0); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Could not disable fixed event %u", (u32) i)); } } /* Disable all GPEs in all GPE blocks */ status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL); status = acpi_ev_remove_global_lock_handler(); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Could not remove Global Lock handler")); } acpi_gbl_events_initialized = FALSE; } /* Remove SCI handlers */ status = acpi_ev_remove_all_sci_handlers(); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Could not remove SCI handler")); } /* Deallocate all handler objects installed within GPE info structs */ status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers, NULL); /* Return to original mode if necessary */ if (acpi_gbl_original_mode == ACPI_SYS_MODE_LEGACY) { status = acpi_disable(); if (ACPI_FAILURE(status)) { ACPI_WARNING((AE_INFO, "AcpiDisable failed")); } } return_VOID; }

Contributors

PersonTokensPropCommitsCommitProp
Andy Grover11564.61%529.41%
Robert Moore3921.91%741.18%
Lv Zheng105.62%15.88%
Len Brown95.06%211.76%
Linus Torvalds (pre-git)31.69%15.88%
Linus Torvalds21.12%15.88%
Total178100.00%17100.00%

#endif /* !ACPI_REDUCED_HARDWARE */

Overall Contributors

PersonTokensPropCommitsCommitProp
Robert Moore24536.14%1541.67%
Andy Grover16824.78%925.00%
Linus Torvalds14020.65%38.33%
Linus Torvalds (pre-git)568.26%12.78%
Len Brown304.42%411.11%
Rui Zhang233.39%12.78%
Lv Zheng101.47%12.78%
Rafael J. Wysocki50.74%12.78%
Patrick Mochel10.15%12.78%
Total678100.00%36100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.