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/****************************************************************************** |
* |
* 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 */ |