266 lines
6.9 KiB
C
266 lines
6.9 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: evmisc - Miscellaneous event manager support functions
|
|
*
|
|
* Copyright (C) 2000 - 2019, Intel Corp.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#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 */
|