void acpi_db_send_notify(char *name, u32 value)
{
struct acpi_namespace_node *node;
acpi_status status;
/* Translate name to an Named object */
node = acpi_db_convert_to_node(name);
if (!node) {
return;
}
/* Dispatch the notify if legal */
if (acpi_ev_is_notify_object(node)) {
status = acpi_ev_queue_notify_request(node, value);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not queue notify\n");
}
} else {
acpi_os_printf("Named object [%4.4s] Type %s, "
"must be Device/Thermal/Processor type\n",
acpi_ut_get_node_name(node),
acpi_ut_get_type_name(node->type));
}
}
void
acpi_db_send_notify (
NATIVE_CHAR *name,
u32 value)
{
acpi_namespace_node *node;
/* Translate name to an Named object */
node = acpi_db_local_ns_lookup (name);
if (!node) {
return;
}
/* Decode Named object type */
switch (node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
/* Send the notify */
acpi_ev_queue_notify_request (node, value);
break;
default:
acpi_os_printf ("Named object is not a device or a thermal object\n");
break;
}
}
acpi_status
acpi_ex_opcode_2A_0T_0R (
acpi_walk_state *walk_state)
{
acpi_operand_object **operand = &walk_state->operands[0];
acpi_namespace_node *node;
acpi_status status = AE_OK;
FUNCTION_TRACE_STR ("Ex_opcode_2A_0T_0R", acpi_ps_get_opcode_name (walk_state->opcode));
/* Examine the opcode */
switch (walk_state->opcode) {
case AML_NOTIFY_OP: /* Notify (Notify_object, Notify_value) */
/* The first operand is a namespace node */
node = (acpi_namespace_node *) operand[0];
/* The node must refer to a device or thermal zone */
if (node && operand[1]) /* TBD: is this check necessary? */ {
switch (node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
/*
* Dispatch the notify to the appropriate handler
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*/
status = acpi_ev_queue_notify_request (node,
(u32) operand[1]->integer.value);
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unexpected notify object type %X\n",
node->type));
status = AE_AML_OPERAND_TYPE;
break;
}
}
break;
default:
REPORT_ERROR (("Acpi_ex_opcode_2A_0T_0R: Unknown opcode %X\n", walk_state->opcode));
status = AE_AML_BAD_OPCODE;
}
return_ACPI_STATUS (status);
}
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
{
struct acpi_gpe_event_info *gpe_event_info = context;
acpi_status status = AE_OK;
struct acpi_evaluate_info *info;
struct acpi_gpe_notify_info *notify;
ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
/* Do the correct dispatch - normal method or implicit notify */
switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) {
case ACPI_GPE_DISPATCH_NOTIFY:
/*
* Implicit notify.
* Dispatch a DEVICE_WAKE notify to the appropriate handler.
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*
* June 2012: Expand implicit notify mechanism to support
* notifies on multiple device objects.
*/
notify = gpe_event_info->dispatch.notify_list;
while (ACPI_SUCCESS(status) && notify) {
status =
acpi_ev_queue_notify_request(notify->device_node,
ACPI_NOTIFY_DEVICE_WAKE);
notify = notify->next;
}
break;
case ACPI_GPE_DISPATCH_METHOD:
/* Allocate the evaluation information block */
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
status = AE_NO_MEMORY;
} else {
/*
* Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the
* _Lxx/_Exx control method that corresponds to this GPE
*/
info->prefix_node =
gpe_event_info->dispatch.method_node;
info->flags = ACPI_IGNORE_RETURN_VALUE;
status = acpi_ns_evaluate(info);
ACPI_FREE(info);
}
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"while evaluating GPE method [%4.4s]",
acpi_ut_get_node_name(gpe_event_info->
dispatch.
method_node)));
}
break;
default:
goto error_exit; /* Should never happen */
}
/* Defer enabling of GPE until all notify handlers are done */
status = acpi_os_execute(OSL_NOTIFY_HANDLER,
acpi_ev_asynch_enable_gpe, gpe_event_info);
if (ACPI_SUCCESS(status)) {
return_VOID;
}
error_exit:
acpi_ev_asynch_enable_gpe(gpe_event_info);
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_2A_0T_0R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute opcode with two arguments, no target, and no return
* value.
*
* ALLOCATION: Deletes both operands
*
******************************************************************************/
acpi_status acpi_ex_opcode_2A_0T_0R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
struct acpi_namespace_node *node;
u32 value;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_STR("ex_opcode_2A_0T_0R",
acpi_ps_get_opcode_name(walk_state->opcode));
/* Examine the opcode */
switch (walk_state->opcode) {
case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */
/* The first operand is a namespace node */
node = (struct acpi_namespace_node *)operand[0];
/* Second value is the notify value */
value = (u32) operand[1]->integer.value;
/* Are notifies allowed on this object? */
if (!acpi_ev_is_notify_object(node)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unexpected notify object type [%s]\n",
acpi_ut_get_type_name(node->type)));
status = AE_AML_OPERAND_TYPE;
break;
}
#ifdef ACPI_GPE_NOTIFY_CHECK
/*
* GPE method wake/notify check. Here, we want to ensure that we
* don't receive any "device_wake" Notifies from a GPE _Lxx or _Exx
* GPE method during system runtime. If we do, the GPE is marked
* as "wake-only" and disabled.
*
* 1) Is the Notify() value == device_wake?
* 2) Is this a GPE deferred method? (An _Lxx or _Exx method)
* 3) Did the original GPE happen at system runtime?
* (versus during wake)
*
* If all three cases are true, this is a wake-only GPE that should
* be disabled at runtime.
*/
if (value == 2) { /* device_wake */
status =
acpi_ev_check_for_wake_only_gpe(walk_state->
gpe_event_info);
if (ACPI_FAILURE(status)) {
/* AE_WAKE_ONLY_GPE only error, means ignore this notify */
return_ACPI_STATUS(AE_OK)
}
}
#endif
/*
* Dispatch the notify to the appropriate handler
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*/
status = acpi_ev_queue_notify_request(node, value);
break;
default:
ACPI_REPORT_ERROR(("acpi_ex_opcode_2A_0T_0R: Unknown opcode %X\n", walk_state->opcode));
status = AE_AML_BAD_OPCODE;
}
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
{
struct acpi_gpe_event_info *gpe_event_info = context;
acpi_status status;
struct acpi_gpe_event_info *local_gpe_event_info;
struct acpi_evaluate_info *info;
struct acpi_gpe_notify_info *notify;
ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
/* Allocate a local GPE block */
local_gpe_event_info =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_event_info));
if (!local_gpe_event_info) {
ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "while handling a GPE"));
return_VOID;
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
ACPI_FREE(local_gpe_event_info);
return_VOID;
}
/* Must revalidate the gpe_number/gpe_block */
if (!acpi_ev_valid_gpe_event(gpe_event_info)) {
status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
ACPI_FREE(local_gpe_event_info);
return_VOID;
}
/*
* Take a snapshot of the GPE info for this level - we copy the info to
* prevent a race condition with remove_handler/remove_block.
*/
ACPI_MEMCPY(local_gpe_event_info, gpe_event_info,
sizeof(struct acpi_gpe_event_info));
status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_VOID;
}
/* Do the correct dispatch - normal method or implicit notify */
switch (local_gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
case ACPI_GPE_DISPATCH_NOTIFY:
/*
* Implicit notify.
* Dispatch a DEVICE_WAKE notify to the appropriate handler.
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*
* June 2012: Expand implicit notify mechanism to support
* notifies on multiple device objects.
*/
notify = local_gpe_event_info->dispatch.notify_list;
while (ACPI_SUCCESS(status) && notify) {
status =
acpi_ev_queue_notify_request(notify->device_node,
ACPI_NOTIFY_DEVICE_WAKE);
notify = notify->next;
}
break;
case ACPI_GPE_DISPATCH_METHOD:
/* Allocate the evaluation information block */
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
status = AE_NO_MEMORY;
} else {
/*
* Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
* control method that corresponds to this GPE
*/
info->prefix_node =
local_gpe_event_info->dispatch.method_node;
info->flags = ACPI_IGNORE_RETURN_VALUE;
status = acpi_ns_evaluate(info);
ACPI_FREE(info);
}
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"while evaluating GPE method [%4.4s]",
acpi_ut_get_node_name
(local_gpe_event_info->dispatch.
method_node)));
}
break;
default:
return_VOID; /* Should never happen */
}
/* Defer enabling of GPE until all notify handlers are done */
status = acpi_os_execute(OSL_NOTIFY_HANDLER,
acpi_ev_asynch_enable_gpe,
local_gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_FREE(local_gpe_event_info);
}
return_VOID;
}
