*****************************************************************************/
/*
- * Copyright (C) 2000 - 2004, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
#include <acpi/acevents.h>
-#include <acpi/acinterp.h>
#define _COMPONENT ACPI_EVENTS
- ACPI_MODULE_NAME ("evxfregn")
-
+ACPI_MODULE_NAME("evxfregn")
/*******************************************************************************
*
* DESCRIPTION: Install a handler for all op_regions of a given space_id.
*
******************************************************************************/
-
acpi_status
-acpi_install_address_space_handler (
- acpi_handle device,
- acpi_adr_space_type space_id,
- acpi_adr_space_handler handler,
- acpi_adr_space_setup setup,
- void *context)
+acpi_install_address_space_handler(acpi_handle device,
+ 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;
- struct acpi_namespace_node *node;
- acpi_status status;
- acpi_object_type type;
- u16 flags = 0;
-
-
- ACPI_FUNCTION_TRACE ("acpi_install_address_space_handler");
+ struct acpi_namespace_node *node;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(acpi_install_address_space_handler);
/* Parameter validation */
if (!device) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/* Convert and validate the device handle */
- node = acpi_ns_map_handle_to_node (device);
+ node = acpi_ns_map_handle_to_node(device);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
- /*
- * 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 */
+ /* Install the handler for all Regions for this Space ID */
- 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;
- }
+ status =
+ acpi_ev_install_space_handler(node, space_id, handler, setup,
+ context);
+ if (ACPI_FAILURE(status)) {
+ goto unlock_and_exit;
}
- 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 */
+ /* Run all _REG methods for this address space */
- acpi_ut_remove_reference (obj_desc);
+ status = acpi_ev_execute_reg_methods(node, space_id);
- 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, device, ACPI_UINT32_MAX,
- ACPI_NS_WALK_UNLOCK, acpi_ev_install_handler,
- handler_obj, NULL);
-
- /*
- * Now we can run the _REG methods for all 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, device, ACPI_UINT32_MAX,
- ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run,
- handler_obj, NULL);
-
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (status);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS(status);
}
+ACPI_EXPORT_SYMBOL(acpi_install_address_space_handler)
/*******************************************************************************
*
* DESCRIPTION: Remove a previously installed handler.
*
******************************************************************************/
-
acpi_status
-acpi_remove_address_space_handler (
- acpi_handle device,
- acpi_adr_space_type space_id,
- acpi_adr_space_handler handler)
+acpi_remove_address_space_handler(acpi_handle device,
+ acpi_adr_space_type space_id,
+ acpi_adr_space_handler handler)
{
- union acpi_operand_object *obj_desc;
- union acpi_operand_object *handler_obj;
- union acpi_operand_object *region_obj;
- union acpi_operand_object **last_obj_ptr;
- struct acpi_namespace_node *node;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("acpi_remove_address_space_handler");
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *handler_obj;
+ union acpi_operand_object *region_obj;
+ union acpi_operand_object **last_obj_ptr;
+ struct acpi_namespace_node *node;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(acpi_remove_address_space_handler);
/* Parameter validation */
if (!device) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/* Convert and validate the device handle */
- node = acpi_ns_map_handle_to_node (device);
- if (!node) {
+ node = acpi_ns_map_handle_to_node(device);
+ if (!node ||
+ ((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;
}
/* Make sure the internal object exists */
- obj_desc = acpi_ns_get_attached_object (node);
+ obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
status = AE_NOT_EXIST;
goto unlock_and_exit;
handler_obj = obj_desc->device.handler;
last_obj_ptr = &obj_desc->device.handler;
while (handler_obj) {
+
/* We have a handler, see if user requested this one */
if (handler_obj->address_space.space_id == space_id) {
+
+ /* Handler must be the same as the installed handler */
+
+ if (handler_obj->address_space.handler != handler) {
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+
/* Matched space_id, first dereference this in the Regions */
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Removing address handler %p(%p) for region %s on Device %p(%p)\n",
- handler_obj, handler, acpi_ut_get_region_name (space_id),
- node, obj_desc));
+ ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
+ "Removing address handler %p(%p) for region %s on Device %p(%p)\n",
+ handler_obj, handler,
+ acpi_ut_get_region_name(space_id),
+ node, obj_desc));
region_obj = handler_obj->address_space.region_list;
* The region is just inaccessible as indicated to
* the _REG method
*/
- acpi_ev_detach_region (region_obj, TRUE);
+ acpi_ev_detach_region(region_obj, TRUE);
/*
* Walk the list: Just grab the head because the
* detach_region removed the previous head.
*/
- region_obj = handler_obj->address_space.region_list;
+ region_obj =
+ handler_obj->address_space.region_list;
}
/* Now we can delete the handler object */
- acpi_ut_remove_reference (handler_obj);
+ acpi_ut_remove_reference(handler_obj);
goto unlock_and_exit;
}
/* The handler does not exist */
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Unable to remove address handler %p for %s(%X), dev_node %p, obj %p\n",
- handler, acpi_ut_get_region_name (space_id), space_id, node, obj_desc));
+ ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
+ "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n",
+ handler, acpi_ut_get_region_name(space_id), space_id,
+ node, obj_desc));
status = AE_NOT_EXIST;
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (status);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS(status);
}
-
+ACPI_EXPORT_SYMBOL(acpi_remove_address_space_handler)
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