/*******************************************************************************
*
- * FUNCTION: acpi_ev_init_address_spaces
+ * FUNCTION: acpi_ev_install_region_handlers
*
* PARAMETERS: None
*
******************************************************************************/
acpi_status
-acpi_ev_init_address_spaces (
+acpi_ev_install_region_handlers (
void) {
acpi_status status;
acpi_native_uint i;
- ACPI_FUNCTION_TRACE ("ev_init_address_spaces");
+ ACPI_FUNCTION_TRACE ("ev_install_region_handlers");
+ status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
/*
* All address spaces (PCI Config, EC, SMBus) are scope dependent
* and registration must occur for a specific device.
* has already been installed (via acpi_install_address_space_handler).
* Similar for AE_SAME_HANDLER.
*/
-
for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
- status = acpi_install_address_space_handler ((acpi_handle) acpi_gbl_root_node,
+ status = acpi_ev_install_space_handler (acpi_gbl_root_node,
acpi_gbl_default_address_spaces[i],
ACPI_DEFAULT_HANDLER, NULL, NULL);
switch (status) {
/* These exceptions are all OK */
+ status = AE_OK;
break;
default:
- return_ACPI_STATUS (status);
+ goto unlock_and_exit;
}
}
- return_ACPI_STATUS (AE_OK);
+unlock_and_exit:
+ (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_initialize_op_regions
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Execute _REG methods for all Operation Regions that have
+ * an installed default region handler.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_initialize_op_regions (
+ void)
+{
+ acpi_status status;
+ acpi_native_uint i;
+
+
+ ACPI_FUNCTION_TRACE ("ev_initialize_op_regions");
+
+
+ status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * Run the _REG methods for op_regions in each default address space
+ */
+ for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
+ /* TBD: Make sure handler is the DEFAULT handler, otherwise
+ * _REG will have already been run.
+ */
+ status = acpi_ev_execute_reg_methods (acpi_gbl_root_node,
+ acpi_gbl_default_address_spaces[i]);
+ }
+
+ (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS (status);
}
* FUNCTION: acpi_ev_execute_reg_method
*
* PARAMETERS: region_obj - Object structure
- * Function - On (1) or Off (0)
+ * Function - Passed to _REG: On (1) or Off (0)
*
* RETURN: Status
*
acpi_status
acpi_ev_execute_reg_method (
- union acpi_operand_object *region_obj,
+ union acpi_operand_object *region_obj,
u32 function)
{
- union acpi_operand_object *params[3];
- union acpi_operand_object *region_obj2;
+ struct acpi_parameter_info info;
+ union acpi_operand_object *params[3];
+ union acpi_operand_object *region_obj2;
acpi_status status;
}
/*
- * _REG method has two arguments
- * Arg0: Integer: Operation region space ID
+ * The _REG method has two arguments:
+ *
+ * Arg0, Integer: Operation region space ID
* Same value as region_obj->Region.space_id
- * Arg1: Integer: connection status
+ * Arg1, Integer: connection status
* 1 for connecting the handler,
* 0 for disconnecting the handler
* Passed as a parameter
goto cleanup;
}
- /* Set up the parameter objects */
+ /* Setup the parameter objects */
params[0]->integer.value = region_obj->region.space_id;
params[1]->integer.value = function;
params[2] = NULL;
+ info.node = region_obj2->extra.method_REG;
+ info.parameters = params;
+ info.parameter_type = ACPI_PARAM_ARGS;
+
/* Execute the method, no return value */
- ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_METHOD, region_obj2->extra.method_REG, NULL));
- status = acpi_ns_evaluate_by_handle (region_obj2->extra.method_REG, params, NULL);
+ ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname (
+ ACPI_TYPE_METHOD, info.node, NULL));
+ status = acpi_ns_evaluate_by_handle (&info);
acpi_ut_remove_reference (params[1]);
* FUNCTION: acpi_ev_address_space_dispatch
*
* PARAMETERS: region_obj - Internal region object
- * space_id - ID of the address space (0-255)
* Function - Read or Write operation
* Address - Where in the space to read or write
* bit_width - Field width in bits (8, 16, 32, or 64)
ACPI_FORMAT_UINT64 (address),
acpi_ut_get_region_name (region_obj->region.space_id)));
- if (!(handler_desc->address_space.flags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
+ if (!(handler_desc->address_space.hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* For handlers other than the default (supplied) handlers, we must
* exit the interpreter because the handler *might* block -- we don't
acpi_format_exception (status)));
}
- if (!(handler_desc->address_space.flags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
+ if (!(handler_desc->address_space.hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* We just returned from a non-default handler, we must re-enter the
* interpreter
*
* FUNCTION: acpi_ev_detach_region
*
- * PARAMETERS: region_obj - Region Object
- * acpi_ns_is_locked - Namespace Region Already Locked?
+ * PARAMETERS: region_obj - Region Object
+ * acpi_ns_is_locked - Namespace Region Already Locked?
*
* RETURN: None
*
*
* FUNCTION: acpi_ev_attach_region
*
- * PARAMETERS: handler_obj - Handler Object
- * region_obj - Region Object
- * acpi_ns_is_locked - Namespace Region Already Locked?
+ * PARAMETERS: handler_obj - Handler Object
+ * region_obj - Region Object
+ * acpi_ns_is_locked - Namespace Region Already Locked?
*
* RETURN: None
*
return (status);
}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_install_space_handler
+ *
+ * PARAMETERS: Node - Namespace node for the device
+ * space_id - The address space ID
+ * Handler - Address of the handler
+ * Setup - Address of the setup function
+ * Context - Value passed to the handler on each access
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Install a handler for all op_regions of a given space_id.
+ * Assumes namespace is locked
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_install_space_handler (
+ struct acpi_namespace_node *node,
+ acpi_adr_space_type space_id,
+ acpi_adr_space_handler handler,
+ acpi_adr_space_setup setup,
+ void *context)
+{
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *handler_obj;
+ acpi_status status;
+ acpi_object_type type;
+ u16 flags = 0;
+
+
+ ACPI_FUNCTION_TRACE ("ev_install_space_handler");
+
+
+ /*
+ * This registration is valid for only the types below
+ * and the root. This is where the default handlers
+ * get placed.
+ */
+ if ((node->type != ACPI_TYPE_DEVICE) &&
+ (node->type != ACPI_TYPE_PROCESSOR) &&
+ (node->type != ACPI_TYPE_THERMAL) &&
+ (node != acpi_gbl_root_node)) {
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+
+ if (handler == ACPI_DEFAULT_HANDLER) {
+ flags = ACPI_ADDR_HANDLER_DEFAULT_INSTALLED;
+
+ switch (space_id) {
+ case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+ handler = acpi_ex_system_memory_space_handler;
+ setup = acpi_ev_system_memory_region_setup;
+ break;
+
+ case ACPI_ADR_SPACE_SYSTEM_IO:
+ handler = acpi_ex_system_io_space_handler;
+ setup = acpi_ev_io_space_region_setup;
+ break;
+
+ case ACPI_ADR_SPACE_PCI_CONFIG:
+ handler = acpi_ex_pci_config_space_handler;
+ setup = acpi_ev_pci_config_region_setup;
+ break;
+
+ case ACPI_ADR_SPACE_CMOS:
+ handler = acpi_ex_cmos_space_handler;
+ setup = acpi_ev_cmos_region_setup;
+ break;
+
+ case ACPI_ADR_SPACE_PCI_BAR_TARGET:
+ handler = acpi_ex_pci_bar_space_handler;
+ setup = acpi_ev_pci_bar_region_setup;
+ break;
+
+ case ACPI_ADR_SPACE_DATA_TABLE:
+ handler = acpi_ex_data_table_space_handler;
+ setup = NULL;
+ break;
+
+ default:
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+ }
+
+ /* If the caller hasn't specified a setup routine, use the default */
+
+ if (!setup) {
+ setup = acpi_ev_default_region_setup;
+ }
+
+ /* Check for an existing internal object */
+
+ obj_desc = acpi_ns_get_attached_object (node);
+ if (obj_desc) {
+ /*
+ * The attached device object already exists.
+ * Make sure the handler is not already installed.
+ */
+ handler_obj = obj_desc->device.handler;
+
+ /* Walk the handler list for this device */
+
+ while (handler_obj) {
+ /* Same space_id indicates a handler already installed */
+
+ if (handler_obj->address_space.space_id == space_id) {
+ if (handler_obj->address_space.handler == handler) {
+ /*
+ * It is (relatively) OK to attempt to install the SAME
+ * handler twice. This can easily happen with PCI_Config space.
+ */
+ status = AE_SAME_HANDLER;
+ goto unlock_and_exit;
+ }
+ else {
+ /* A handler is already installed */
+
+ status = AE_ALREADY_EXISTS;
+ }
+ goto unlock_and_exit;
+ }
+
+ /* Walk the linked list of handlers */
+
+ handler_obj = handler_obj->address_space.next;
+ }
+ }
+ else {
+ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
+ "Creating object on Device %p while installing handler\n", node));
+
+ /* obj_desc does not exist, create one */
+
+ if (node->type == ACPI_TYPE_ANY) {
+ type = ACPI_TYPE_DEVICE;
+ }
+ else {
+ type = node->type;
+ }
+
+ obj_desc = acpi_ut_create_internal_object (type);
+ if (!obj_desc) {
+ status = AE_NO_MEMORY;
+ goto unlock_and_exit;
+ }
+
+ /* Init new descriptor */
+
+ obj_desc->common.type = (u8) type;
+
+ /* Attach the new object to the Node */
+
+ status = acpi_ns_attach_object (node, obj_desc, type);
+
+ /* Remove local reference to the object */
+
+ acpi_ut_remove_reference (obj_desc);
+
+ if (ACPI_FAILURE (status)) {
+ goto unlock_and_exit;
+ }
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
+ "Installing address handler for region %s(%X) on Device %4.4s %p(%p)\n",
+ acpi_ut_get_region_name (space_id), space_id,
+ acpi_ut_get_node_name (node), node, obj_desc));
+
+ /*
+ * Install the handler
+ *
+ * At this point there is no existing handler.
+ * Just allocate the object for the handler and link it
+ * into the list.
+ */
+ handler_obj = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_ADDRESS_HANDLER);
+ if (!handler_obj) {
+ status = AE_NO_MEMORY;
+ goto unlock_and_exit;
+ }
+
+ /* Init handler obj */
+
+ handler_obj->address_space.space_id = (u8) space_id;
+ handler_obj->address_space.hflags = flags;
+ handler_obj->address_space.region_list = NULL;
+ handler_obj->address_space.node = node;
+ handler_obj->address_space.handler = handler;
+ handler_obj->address_space.context = context;
+ handler_obj->address_space.setup = setup;
+
+ /* Install at head of Device.address_space list */
+
+ handler_obj->address_space.next = obj_desc->device.handler;
+
+ /*
+ * The Device object is the first reference on the handler_obj.
+ * Each region that uses the handler adds a reference.
+ */
+ obj_desc->device.handler = handler_obj;
+
+ /*
+ * Walk the namespace finding all of the regions this
+ * handler will manage.
+ *
+ * Start at the device and search the branch toward
+ * the leaf nodes until either the leaf is encountered or
+ * a device is detected that has an address handler of the
+ * same type.
+ *
+ * In either case, back up and search down the remainder
+ * of the branch
+ */
+ status = acpi_ns_walk_namespace (ACPI_TYPE_ANY, node, ACPI_UINT32_MAX,
+ ACPI_NS_WALK_UNLOCK, acpi_ev_install_handler,
+ handler_obj, NULL);
+
+unlock_and_exit:
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_execute_reg_methods
+ *
+ * PARAMETERS: Node - Namespace node for the device
+ * space_id - The address space ID
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Run all _REG methods for the input Space ID;
+ * Note: assumes namespace is locked, or system init time.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_execute_reg_methods (
+ struct acpi_namespace_node *node,
+ acpi_adr_space_type space_id)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_execute_reg_methods");
+
+
+ /*
+ * Run all _REG methods for all Operation Regions for this
+ * space ID. This is a separate walk in order to handle any
+ * interdependencies between regions and _REG methods. (i.e. handlers
+ * must be installed for all regions of this Space ID before we
+ * can run any _REG methods)
+ */
+ status = acpi_ns_walk_namespace (ACPI_TYPE_ANY, node, ACPI_UINT32_MAX,
+ ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run,
+ &space_id, NULL);
+
+ return_ACPI_STATUS (status);
+}
+
+
/*******************************************************************************
*
* FUNCTION: acpi_ev_reg_run
void *context,
void **return_value)
{
- union acpi_operand_object *handler_obj;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node;
+ acpi_adr_space_type space_id;
acpi_status status;
- handler_obj = (union acpi_operand_object *) context;
-
- /* Parameter validation */
-
- if (!handler_obj) {
- return (AE_OK);
- }
+ space_id = *ACPI_CAST_PTR (acpi_adr_space_type, context);
/* Convert and validate the device handle */
return (AE_OK);
}
-
/* Object is a Region */
- if (obj_desc->region.space_id != handler_obj->address_space.space_id) {
+ if (obj_desc->region.space_id != space_id) {
/*
* This region is for a different address space
* -- just ignore it
git://git.onelab.eu / linux-2.6.git / blobdiff