--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: evmisc - Miscellaneous event manager support functions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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);
+ }
+}
+
+/*******************************************************************************
+ *
+ * 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);
+}
+
+/*******************************************************************************
+ *
+ * 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);
+}
+
+#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;
+}
+
+#endif /* !ACPI_REDUCED_HARDWARE */
Code Review / kvmfornfv.git / blobdiff