static u32 acpi_ev_global_lock_handler(void *context)
{
u8 acquired = FALSE;
acpi_status status;
/*
* Attempt to get the lock
* If we don't get it now, it will be marked pending and we will
* take another interrupt when it becomes free.
*/
ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_common_fACS.global_lock, acquired);
if (acquired) {
/* Got the lock, now wake all threads waiting for it */
acpi_gbl_global_lock_acquired = TRUE;
/* Run the Global Lock thread which will signal all waiting threads */
status =
acpi_os_execute(OSL_GLOBAL_LOCK_HANDLER,
acpi_ev_global_lock_thread, context);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not queue Global Lock thread"));
return (ACPI_INTERRUPT_NOT_HANDLED);
}
}
return (ACPI_INTERRUPT_HANDLED);
}
static void
acpi_thermal_run (
void* data)
{
struct acpi_thermal *tz = (struct acpi_thermal *)data;
if (!tz->zombie)
acpi_os_execute(OSL_GPE_HANDLER,
acpi_thermal_check, (void *) data);
}
u32
acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
acpi_status status;
u32 return_value;
ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
/*
* Always disable the GPE so that it does not keep firing before
* any asynchronous activity completes (either from the execution
* of a GPE method or an asynchronous GPE handler.)
*
* If there is no handler or method to run, just disable the
* GPE and leave it disabled permanently to prevent further such
* pointless events from firing.
*/
status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE %02X", gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
/*
* If edge-triggered, clear the GPE status bit now. Note that
* level-triggered events are cleared after the GPE is serviced.
*/
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_EDGE_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE %02X",
gpe_number));
(void)acpi_hw_low_set_gpe(gpe_event_info,
ACPI_GPE_CONDITIONAL_ENABLE);
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
/*
* Dispatch the GPE to either an installed handler or the control
* method associated with this GPE (_Lxx or _Exx). If a handler
* exists, we invoke it and do not attempt to run the method.
* If there is neither a handler nor a method, leave the GPE
* disabled.
*/
switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) {
case ACPI_GPE_DISPATCH_HANDLER:
/* Invoke the installed handler (at interrupt level) */
return_value =
gpe_event_info->dispatch.handler->address(gpe_device,
gpe_number,
gpe_event_info->
dispatch.handler->
context);
/* If requested, clear (if level-triggered) and reenable the GPE */
if (return_value & ACPI_REENABLE_GPE) {
(void)acpi_ev_finish_gpe(gpe_event_info);
}
break;
case ACPI_GPE_DISPATCH_METHOD:
case ACPI_GPE_DISPATCH_NOTIFY:
/*
* Execute the method associated with the GPE
* NOTE: Level-triggered GPEs are cleared after the method completes.
*/
status = acpi_os_execute(OSL_GPE_HANDLER,
acpi_ev_asynch_execute_gpe_method,
gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to queue handler for GPE %02X - event disabled",
gpe_number));
}
break;
default:
/*
* No handler or method to run!
* 03/2010: This case should no longer be possible. We will not allow
* a GPE to be enabled if it has no handler or method.
*/
ACPI_ERROR((AE_INFO,
"No handler or method for GPE %02X, disabling event",
gpe_number));
break;
}
return_UINT32(ACPI_INTERRUPT_HANDLED);
}
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;
}
static void acpi_bus_osc_support(void)
{
u32 capbuf[2];
struct acpi_osc_context context = {
.uuid_str = sb_uuid_str,
.rev = 1,
.cap.length = 8,
.cap.pointer = capbuf,
};
acpi_handle handle;
capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
if (IS_ENABLED(CONFIG_ACPI_PROCESSOR_AGGREGATOR))
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT;
if (IS_ENABLED(CONFIG_ACPI_PROCESSOR))
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
if (!ghes_disable)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
u32 *capbuf_ret = context.ret.pointer;
if (context.ret.length > OSC_SUPPORT_DWORD)
osc_sb_apei_support_acked =
capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
kfree(context.ret.pointer);
}
/* do we need to check other returned cap? Sounds no */
}
/* --------------------------------------------------------------------------
Notification Handling
-------------------------------------------------------------------------- */
/**
* acpi_bus_notify
* ---------------
* Callback for all 'system-level' device notifications (values 0x00-0x7F).
*/
static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
struct acpi_device *adev;
struct acpi_driver *driver;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
bool hotplug_event = false;
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_WAKE:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n");
break;
case ACPI_NOTIFY_EJECT_REQUEST:
acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n");
/* TBD: Exactly what does 'light' mean? */
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
acpi_handle_err(handle, "Device cannot be configured due "
"to a frequency mismatch\n");
break;
case ACPI_NOTIFY_BUS_MODE_MISMATCH:
acpi_handle_err(handle, "Device cannot be configured due "
"to a bus mode mismatch\n");
break;
case ACPI_NOTIFY_POWER_FAULT:
acpi_handle_err(handle, "Device has suffered a power fault\n");
break;
default:
acpi_handle_debug(handle, "Unknown event type 0x%x\n", type);
break;
}
adev = acpi_bus_get_acpi_device(handle);
if (!adev)
goto err;
driver = adev->driver;
if (driver && driver->ops.notify &&
(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
driver->ops.notify(adev, type);
if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
return;
acpi_bus_put_acpi_device(adev);
return;
err:
acpi_evaluate_ost(handle, type, ost_code, NULL);
}
static void acpi_device_notify(acpi_handle handle, u32 event, void *data)
{
struct acpi_device *device = data;
device->driver->ops.notify(device, event);
}
static void acpi_device_notify_fixed(void *data)
{
struct acpi_device *device = data;
/* Fixed hardware devices have no handles */
acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
}
static u32 acpi_device_fixed_event(void *data)
{
acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data);
return ACPI_INTERRUPT_HANDLED;
}
u32
acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
acpi_os_gpe_count(gpe_number);
/*
* If edge-triggered, clear the GPE status bit now. Note that
* level-triggered events are cleared after the GPE is serviced.
*/
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_EDGE_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
/*
* Dispatch the GPE to either an installed handler, or the control method
* associated with this GPE (_Lxx or _Exx). If a handler exists, we invoke
* it and do not attempt to run the method. If there is neither a handler
* nor a method, we disable this GPE to prevent further such pointless
* events from firing.
*/
switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
case ACPI_GPE_DISPATCH_HANDLER:
/*
* Invoke the installed handler (at interrupt level)
* Ignore return status for now.
* TBD: leave GPE disabled on error?
*/
(void)gpe_event_info->dispatch.handler->address(gpe_event_info->
dispatch.
handler->
context);
/* It is now safe to clear level-triggered events. */
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_LEVEL_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
break;
case ACPI_GPE_DISPATCH_METHOD:
/*
* Disable the GPE, so it doesn't keep firing before the method has a
* chance to run (it runs asynchronously with interrupts enabled).
*/
status = acpi_ev_disable_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
/*
* Execute the method associated with the GPE
* NOTE: Level-triggered GPEs are cleared after the method completes.
*/
status = acpi_os_execute(OSL_GPE_HANDLER,
acpi_ev_asynch_execute_gpe_method,
gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to queue handler for GPE[%2X] - event disabled",
gpe_number));
}
break;
default:
/* No handler or method to run! */
ACPI_ERROR((AE_INFO,
"No handler or method for GPE[%2X], disabling event",
gpe_number));
/*
* Disable the GPE. The GPE will remain disabled until the ACPICA
* Core Subsystem is restarted, or a handler is installed.
*/
status = acpi_ev_disable_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
break;
}
return_UINT32(ACPI_INTERRUPT_HANDLED);
}
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
{
struct acpi_gpe_event_info *gpe_event_info = (void *)context;
acpi_status status;
struct acpi_gpe_event_info local_gpe_event_info;
struct acpi_evaluate_info *info;
ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
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);
return_VOID;
}
/* Set the GPE flags for return to enabled state */
(void)acpi_ev_enable_gpe(gpe_event_info, FALSE);
/*
* 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;
}
/*
* Must check for control method type dispatch one more time to avoid a
* race with ev_gpe_install_handler
*/
if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) ==
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)));
}
}
/* Defer enabling of GPE until all notify handlers are done */
acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_asynch_enable_gpe,
gpe_event_info);
return_VOID;
}
acpi_status acpi_initialize_debugger(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_initialize_debugger);
/* Init globals */
acpi_gbl_db_buffer = NULL;
acpi_gbl_db_filename = NULL;
acpi_gbl_db_output_to_file = FALSE;
acpi_gbl_db_debug_level = ACPI_LV_VERBOSITY2;
acpi_gbl_db_console_debug_level = ACPI_NORMAL_DEFAULT | ACPI_LV_TABLES;
acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
acpi_gbl_db_opt_no_ini_methods = FALSE;
acpi_gbl_db_buffer = acpi_os_allocate(ACPI_DEBUG_BUFFER_SIZE);
if (!acpi_gbl_db_buffer) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
memset(acpi_gbl_db_buffer, 0, ACPI_DEBUG_BUFFER_SIZE);
/* Initial scope is the root */
acpi_gbl_db_scope_buf[0] = AML_ROOT_PREFIX;
acpi_gbl_db_scope_buf[1] = 0;
acpi_gbl_db_scope_node = acpi_gbl_root_node;
/* Initialize user commands loop */
acpi_gbl_db_terminate_loop = FALSE;
/*
* If configured for multi-thread support, the debug executor runs in
* a separate thread so that the front end can be in another address
* space, environment, or even another machine.
*/
if (acpi_gbl_debugger_configuration & DEBUGGER_MULTI_THREADED) {
/* These were created with one unit, grab it */
status = acpi_os_acquire_mutex(acpi_gbl_db_command_complete,
ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not get debugger mutex\n");
return_ACPI_STATUS(status);
}
status = acpi_os_acquire_mutex(acpi_gbl_db_command_ready,
ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not get debugger mutex\n");
return_ACPI_STATUS(status);
}
/* Create the debug execution thread to execute commands */
acpi_gbl_db_threads_terminated = FALSE;
status = acpi_os_execute(OSL_DEBUGGER_MAIN_THREAD,
acpi_db_execute_thread, NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not start debugger thread"));
acpi_gbl_db_threads_terminated = TRUE;
return_ACPI_STATUS(status);
}
} else {
acpi_gbl_db_thread_id = acpi_os_get_thread_id();
}
return_ACPI_STATUS(AE_OK);
}
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;
}
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_obj = NULL;
union acpi_generic_state *notify_info;
acpi_status status = AE_OK;
ACPI_FUNCTION_NAME(ev_queue_notify_request);
/*
* For value 3 (Ejection Request), some device method may need to be run.
* For value 2 (Device Wake) if _PRW exists, the _PS0 method may need
* to be run.
* For value 0x80 (Status Change) on the power button or sleep button,
* initiate soft-off or sleep operation?
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
acpi_ut_get_node_name(node), node, notify_value,
acpi_ut_get_notify_name(notify_value)));
/* Get the notify object attached to the NS Node */
obj_desc = acpi_ns_get_attached_object(node);
if (obj_desc) {
/* We have the notify object, Get the right handler */
switch (node->type) {
/* Notify allowed only on these types */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_PROCESSOR:
if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
handler_obj =
obj_desc->common_notify.system_notify;
} else {
handler_obj =
obj_desc->common_notify.device_notify;
}
break;
default:
/* All other types are not supported */
return (AE_TYPE);
}
}
/*
* If there is any handler to run, schedule the dispatcher.
* Check for:
* 1) Global system notify handler
* 2) Global device notify handler
* 3) Per-device notify handler
*/
if ((acpi_gbl_system_notify.handler &&
(notify_value <= ACPI_MAX_SYS_NOTIFY)) ||
(acpi_gbl_device_notify.handler &&
(notify_value > ACPI_MAX_SYS_NOTIFY)) || handler_obj) {
notify_info = acpi_ut_create_generic_state();
if (!notify_info) {
return (AE_NO_MEMORY);
}
if (!handler_obj) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Executing system notify handler for Notify (%4.4s, %X) "
"node %p\n",
acpi_ut_get_node_name(node),
notify_value, node));
}
notify_info->common.descriptor_type =
ACPI_DESC_TYPE_STATE_NOTIFY;
notify_info->notify.node = node;
notify_info->notify.value = (u16) notify_value;
notify_info->notify.handler_obj = handler_obj;
status =
acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_notify_dispatch,
notify_info);
if (ACPI_FAILURE(status)) {
acpi_ut_delete_generic_state(notify_info);
}
} else {
/* There is no notify handler (per-device or system) for this device */
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No notify handler for Notify (%4.4s, %X) node %p\n",
acpi_ut_get_node_name(node), notify_value,
node));
}
return (status);
}
u32
acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
acpi_os_gpe_count(gpe_number);
/*
* If edge-triggered, clear the GPE status bit now. Note that
* level-triggered events are cleared after the GPE is serviced.
*/
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_EDGE_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE[0x%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
/*
* Dispatch the GPE to either any installed handler or control
* method associated with this GPE (_Lxx or _Exx). We invoke
* the method first in case it has side effects that would be
* interfered with if the handler has already altered hardware
* state. If there is neither a handler nor a method, we
* disable this GPE to prevent further such pointless events
* from firing.
*/
if (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD) {
/*
* Disable the GPE, so it doesn't keep firing before the method has a
* chance to run (it runs asynchronously with interrupts enabled).
*/
status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[0x%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
/*
* Execute the method associated with the GPE
* NOTE: Level-triggered GPEs are cleared after the method completes.
*/
status = acpi_os_execute(OSL_GPE_HANDLER,
acpi_ev_asynch_execute_gpe_method,
gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to queue handler for GPE[0x%2X] - event disabled",
gpe_number));
}
}
if (gpe_event_info->flags & ACPI_GPE_DISPATCH_HANDLER) {
/*
* Invoke the installed handler (at interrupt level)
* Ignore return status for now.
* TBD: leave GPE disabled on error?
*/
(void)gpe_event_info->dispatch.handler->address(gpe_event_info->
dispatch.
handler->
context);
/* It is now safe to clear level-triggered events. */
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_LEVEL_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE[0x%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
}
if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)) {
/*
* No handler or method to run!
* 03/2010: This case should no longer be possible. We will not allow
* a GPE to be enabled if it has no handler or method.
*/
ACPI_ERROR((AE_INFO,
"No handler or method for GPE[0x%2X], disabling event",
gpe_number));
/*
* Disable the GPE. The GPE will remain disabled a handler
* is installed or ACPICA is restarted.
*/
status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[0x%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
return_UINT32(ACPI_INTERRUPT_HANDLED);
}
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);
}
u32
acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
acpi_os_gpe_count(gpe_number);
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_EDGE_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
case ACPI_GPE_DISPATCH_HANDLER:
(void)gpe_event_info->dispatch.handler->address(gpe_event_info->
dispatch.
handler->
context);
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_LEVEL_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
break;
case ACPI_GPE_DISPATCH_METHOD:
status = acpi_ev_disable_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
status = acpi_os_execute(OSL_GPE_HANDLER,
acpi_ev_asynch_execute_gpe_method,
gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to queue handler for GPE[%2X] - event disabled",
gpe_number));
}
break;
default:
ACPI_ERROR((AE_INFO,
"No handler or method for GPE[%2X], disabling event",
gpe_number));
status = acpi_ev_disable_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE[%2X]",
gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
break;
}
return_UINT32(ACPI_INTERRUPT_HANDLED);
}
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
{
struct acpi_gpe_event_info *gpe_event_info = (void *)context;
acpi_status status;
struct acpi_gpe_event_info local_gpe_event_info;
struct acpi_evaluate_info *info;
ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_VOID;
}
if (!acpi_ev_valid_gpe_event(gpe_event_info)) {
status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_VOID;
}
(void)acpi_ev_enable_gpe(gpe_event_info, FALSE);
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;
}
if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_METHOD) {
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
status = AE_NO_MEMORY;
} else {
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)));
}
}
acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_asynch_enable_gpe,
gpe_event_info);
return_VOID;
}
