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authormerge <null@invalid>2009-01-22 13:55:32 +0000
committerAndy Green <agreen@octopus.localdomain>2009-01-22 13:55:32 +0000
commitaa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch)
treefbb786d0ac6f8a774fd834e9ce951197e60fbffa /drivers/acpi/events/evregion.c
parentf2d78193eae5dccd3d588d2c8ea0866efc368332 (diff)
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage: From: merge <null@invalid> MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage: From: merge <null@invalid> MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage: From: Andy Green <andy@openmoko.com> fix-stray-endmenu.patch Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'drivers/acpi/events/evregion.c')
-rw-r--r--drivers/acpi/events/evregion.c1074
1 files changed, 0 insertions, 1074 deletions
diff --git a/drivers/acpi/events/evregion.c b/drivers/acpi/events/evregion.c
deleted file mode 100644
index 236fbd1ca43..00000000000
--- a/drivers/acpi/events/evregion.c
+++ /dev/null
@@ -1,1074 +0,0 @@
-/******************************************************************************
- *
- * Module Name: evregion - ACPI address_space (op_region) handler dispatch
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, 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 <acpi/acevents.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
-
-#define _COMPONENT ACPI_EVENTS
-ACPI_MODULE_NAME("evregion")
-#define ACPI_NUM_DEFAULT_SPACES 4
-static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = {
- ACPI_ADR_SPACE_SYSTEM_MEMORY,
- ACPI_ADR_SPACE_SYSTEM_IO,
- ACPI_ADR_SPACE_PCI_CONFIG,
- ACPI_ADR_SPACE_DATA_TABLE
-};
-
-/* Local prototypes */
-
-static acpi_status
-acpi_ev_reg_run(acpi_handle obj_handle,
- u32 level, void *context, void **return_value);
-
-static acpi_status
-acpi_ev_install_handler(acpi_handle obj_handle,
- u32 level, void *context, void **return_value);
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_install_region_handlers
- *
- * PARAMETERS: None
- *
- * RETURN: Status
- *
- * DESCRIPTION: Installs the core subsystem default address space handlers.
- *
- ******************************************************************************/
-
-acpi_status acpi_ev_install_region_handlers(void)
-{
- acpi_status status;
- u32 i;
-
- 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.
- *
- * In the case of the system memory and IO address spaces there is currently
- * no device associated with the address space. For these we use the root.
- *
- * We install the default PCI config space handler at the root so
- * that this space is immediately available even though the we have
- * not enumerated all the PCI Root Buses yet. This is to conform
- * to the ACPI specification which states that the PCI config
- * space must be always available -- even though we are nowhere
- * near ready to find the PCI root buses at this point.
- *
- * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler
- * 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_ev_install_space_handler(acpi_gbl_root_node,
- acpi_gbl_default_address_spaces
- [i],
- ACPI_DEFAULT_HANDLER,
- NULL, NULL);
- switch (status) {
- case AE_OK:
- case AE_SAME_HANDLER:
- case AE_ALREADY_EXISTS:
-
- /* These exceptions are all OK */
-
- status = AE_OK;
- break;
-
- default:
-
- goto unlock_and_exit;
- }
- }
-
- 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;
- u32 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 - Region object
- * Function - Passed to _REG: On (1) or Off (0)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute _REG method for a region
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)
-{
- struct acpi_evaluate_info *info;
- union acpi_operand_object *args[3];
- union acpi_operand_object *region_obj2;
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(ev_execute_reg_method);
-
- region_obj2 = acpi_ns_get_secondary_object(region_obj);
- if (!region_obj2) {
- return_ACPI_STATUS(AE_NOT_EXIST);
- }
-
- if (region_obj2->extra.method_REG == NULL) {
- return_ACPI_STATUS(AE_OK);
- }
-
- /* Allocate and initialize the evaluation information block */
-
- info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
- if (!info) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- info->prefix_node = region_obj2->extra.method_REG;
- info->pathname = NULL;
- info->parameters = args;
- info->flags = ACPI_IGNORE_RETURN_VALUE;
-
- /*
- * The _REG method has two arguments:
- *
- * Arg0 - Integer:
- * Operation region space ID Same value as region_obj->Region.space_id
- *
- * Arg1 - Integer:
- * connection status 1 for connecting the handler, 0 for disconnecting
- * the handler (Passed as a parameter)
- */
- args[0] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!args[0]) {
- status = AE_NO_MEMORY;
- goto cleanup1;
- }
-
- args[1] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!args[1]) {
- status = AE_NO_MEMORY;
- goto cleanup2;
- }
-
- /* Setup the parameter objects */
-
- args[0]->integer.value = region_obj->region.space_id;
- args[1]->integer.value = function;
- args[2] = NULL;
-
- /* Execute the method, no return value */
-
- ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
- (ACPI_TYPE_METHOD, info->prefix_node, NULL));
-
- status = acpi_ns_evaluate(info);
- acpi_ut_remove_reference(args[1]);
-
- cleanup2:
- acpi_ut_remove_reference(args[0]);
-
- cleanup1:
- ACPI_FREE(info);
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_address_space_dispatch
- *
- * PARAMETERS: region_obj - Internal region object
- * 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)
- * Value - Pointer to in or out value, must be
- * full 64-bit acpi_integer
- *
- * RETURN: Status
- *
- * DESCRIPTION: Dispatch an address space or operation region access to
- * a previously installed handler.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
- u32 function,
- acpi_physical_address address,
- u32 bit_width, acpi_integer * value)
-{
- acpi_status status;
- acpi_adr_space_handler handler;
- acpi_adr_space_setup region_setup;
- union acpi_operand_object *handler_desc;
- union acpi_operand_object *region_obj2;
- void *region_context = NULL;
-
- ACPI_FUNCTION_TRACE(ev_address_space_dispatch);
-
- region_obj2 = acpi_ns_get_secondary_object(region_obj);
- if (!region_obj2) {
- return_ACPI_STATUS(AE_NOT_EXIST);
- }
-
- /* Ensure that there is a handler associated with this region */
-
- handler_desc = region_obj->region.handler;
- if (!handler_desc) {
- ACPI_ERROR((AE_INFO,
- "No handler for Region [%4.4s] (%p) [%s]",
- acpi_ut_get_node_name(region_obj->region.node),
- region_obj,
- acpi_ut_get_region_name(region_obj->region.
- space_id)));
-
- return_ACPI_STATUS(AE_NOT_EXIST);
- }
-
- /*
- * It may be the case that the region has never been initialized
- * Some types of regions require special init code
- */
- if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
- /*
- * This region has not been initialized yet, do it
- */
- region_setup = handler_desc->address_space.setup;
- if (!region_setup) {
-
- /* No initialization routine, exit with error */
-
- ACPI_ERROR((AE_INFO,
- "No init routine for region(%p) [%s]",
- region_obj,
- acpi_ut_get_region_name(region_obj->region.
- space_id)));
- return_ACPI_STATUS(AE_NOT_EXIST);
- }
-
- /*
- * We must exit the interpreter because the region
- * setup will potentially execute control methods
- * (e.g., _REG method for this region)
- */
- acpi_ex_exit_interpreter();
-
- status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
- handler_desc->address_space.context,
- &region_context);
-
- /* Re-enter the interpreter */
-
- acpi_ex_enter_interpreter();
-
- /* Check for failure of the Region Setup */
-
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "During region initialization: [%s]",
- acpi_ut_get_region_name(region_obj->
- region.
- space_id)));
- return_ACPI_STATUS(status);
- }
-
- /*
- * Region initialization may have been completed by region_setup
- */
- if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
- region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;
-
- if (region_obj2->extra.region_context) {
-
- /* The handler for this region was already installed */
-
- ACPI_FREE(region_context);
- } else {
- /*
- * Save the returned context for use in all accesses to
- * this particular region
- */
- region_obj2->extra.region_context =
- region_context;
- }
- }
- }
-
- /* We have everything we need, we can invoke the address space handler */
-
- handler = handler_desc->address_space.handler;
-
- ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
- "Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
- &region_obj->region.handler->address_space, handler,
- ACPI_FORMAT_NATIVE_UINT(address),
- acpi_ut_get_region_name(region_obj->region.
- space_id)));
-
- if (!(handler_desc->address_space.handler_flags &
- 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
- * know what it will do, so we can't hold the lock on the intepreter.
- */
- acpi_ex_exit_interpreter();
- }
-
- /* Call the handler */
-
- status = handler(function, address, bit_width, value,
- handler_desc->address_space.context,
- region_obj2->extra.region_context);
-
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]",
- acpi_ut_get_region_name(region_obj->region.
- space_id)));
- }
-
- if (!(handler_desc->address_space.handler_flags &
- ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
- /*
- * We just returned from a non-default handler, we must re-enter the
- * interpreter
- */
- acpi_ex_enter_interpreter();
- }
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_detach_region
- *
- * PARAMETERS: region_obj - Region Object
- * acpi_ns_is_locked - Namespace Region Already Locked?
- *
- * RETURN: None
- *
- * DESCRIPTION: Break the association between the handler and the region
- * this is a two way association.
- *
- ******************************************************************************/
-
-void
-acpi_ev_detach_region(union acpi_operand_object *region_obj,
- u8 acpi_ns_is_locked)
-{
- union acpi_operand_object *handler_obj;
- union acpi_operand_object *obj_desc;
- union acpi_operand_object **last_obj_ptr;
- acpi_adr_space_setup region_setup;
- void **region_context;
- union acpi_operand_object *region_obj2;
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(ev_detach_region);
-
- region_obj2 = acpi_ns_get_secondary_object(region_obj);
- if (!region_obj2) {
- return_VOID;
- }
- region_context = &region_obj2->extra.region_context;
-
- /* Get the address handler from the region object */
-
- handler_obj = region_obj->region.handler;
- if (!handler_obj) {
-
- /* This region has no handler, all done */
-
- return_VOID;
- }
-
- /* Find this region in the handler's list */
-
- obj_desc = handler_obj->address_space.region_list;
- last_obj_ptr = &handler_obj->address_space.region_list;
-
- while (obj_desc) {
-
- /* Is this the correct Region? */
-
- if (obj_desc == region_obj) {
- ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
- "Removing Region %p from address handler %p\n",
- region_obj, handler_obj));
-
- /* This is it, remove it from the handler's list */
-
- *last_obj_ptr = obj_desc->region.next;
- obj_desc->region.next = NULL; /* Must clear field */
-
- if (acpi_ns_is_locked) {
- status =
- acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return_VOID;
- }
- }
-
- /* Now stop region accesses by executing the _REG method */
-
- status = acpi_ev_execute_reg_method(region_obj, 0);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "from region _REG, [%s]",
- acpi_ut_get_region_name
- (region_obj->region.space_id)));
- }
-
- if (acpi_ns_is_locked) {
- status =
- acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return_VOID;
- }
- }
-
- /*
- * If the region has been activated, call the setup handler
- * with the deactivate notification
- */
- if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
- region_setup = handler_obj->address_space.setup;
- status =
- region_setup(region_obj,
- ACPI_REGION_DEACTIVATE,
- handler_obj->address_space.
- context, region_context);
-
- /* Init routine may fail, Just ignore errors */
-
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "from region handler - deactivate, [%s]",
- acpi_ut_get_region_name
- (region_obj->region.
- space_id)));
- }
-
- region_obj->region.flags &=
- ~(AOPOBJ_SETUP_COMPLETE);
- }
-
- /*
- * Remove handler reference in the region
- *
- * NOTE: this doesn't mean that the region goes away, the region
- * is just inaccessible as indicated to the _REG method
- *
- * If the region is on the handler's list, this must be the
- * region's handler
- */
- region_obj->region.handler = NULL;
- acpi_ut_remove_reference(handler_obj);
-
- return_VOID;
- }
-
- /* Walk the linked list of handlers */
-
- last_obj_ptr = &obj_desc->region.next;
- obj_desc = obj_desc->region.next;
- }
-
- /* If we get here, the region was not in the handler's region list */
-
- ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
- "Cannot remove region %p from address handler %p\n",
- region_obj, handler_obj));
-
- return_VOID;
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_attach_region
- *
- * PARAMETERS: handler_obj - Handler Object
- * region_obj - Region Object
- * acpi_ns_is_locked - Namespace Region Already Locked?
- *
- * RETURN: None
- *
- * DESCRIPTION: Create the association between the handler and the region
- * this is a two way association.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ev_attach_region(union acpi_operand_object *handler_obj,
- union acpi_operand_object *region_obj,
- u8 acpi_ns_is_locked)
-{
-
- ACPI_FUNCTION_TRACE(ev_attach_region);
-
- ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
- "Adding Region [%4.4s] %p to address handler %p [%s]\n",
- acpi_ut_get_node_name(region_obj->region.node),
- region_obj, handler_obj,
- acpi_ut_get_region_name(region_obj->region.
- space_id)));
-
- /* Link this region to the front of the handler's list */
-
- region_obj->region.next = handler_obj->address_space.region_list;
- handler_obj->address_space.region_list = region_obj;
-
- /* Install the region's handler */
-
- if (region_obj->region.handler) {
- return_ACPI_STATUS(AE_ALREADY_EXISTS);
- }
-
- region_obj->region.handler = handler_obj;
- acpi_ut_add_reference(handler_obj);
-
- return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_install_handler
- *
- * PARAMETERS: walk_namespace callback
- *
- * DESCRIPTION: This routine installs an address handler into objects that are
- * of type Region or Device.
- *
- * If the Object is a Device, and the device has a handler of
- * the same type then the search is terminated in that branch.
- *
- * This is because the existing handler is closer in proximity
- * to any more regions than the one we are trying to install.
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ev_install_handler(acpi_handle obj_handle,
- u32 level, void *context, void **return_value)
-{
- union acpi_operand_object *handler_obj;
- union acpi_operand_object *next_handler_obj;
- union acpi_operand_object *obj_desc;
- struct acpi_namespace_node *node;
- acpi_status status;
-
- ACPI_FUNCTION_NAME(ev_install_handler);
-
- handler_obj = (union acpi_operand_object *)context;
-
- /* Parameter validation */
-
- if (!handler_obj) {
- return (AE_OK);
- }
-
- /* Convert and validate the device handle */
-
- node = acpi_ns_map_handle_to_node(obj_handle);
- if (!node) {
- return (AE_BAD_PARAMETER);
- }
-
- /*
- * We only care about regions.and objects
- * that are allowed to have address space handlers
- */
- if ((node->type != ACPI_TYPE_DEVICE) &&
- (node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
- return (AE_OK);
- }
-
- /* Check for an existing internal object */
-
- obj_desc = acpi_ns_get_attached_object(node);
- if (!obj_desc) {
-
- /* No object, just exit */
-
- return (AE_OK);
- }
-
- /* Devices are handled different than regions */
-
- if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_DEVICE) {
-
- /* Check if this Device already has a handler for this address space */
-
- next_handler_obj = obj_desc->device.handler;
- while (next_handler_obj) {
-
- /* Found a handler, is it for the same address space? */
-
- if (next_handler_obj->address_space.space_id ==
- handler_obj->address_space.space_id) {
- ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
- "Found handler for region [%s] in device %p(%p) handler %p\n",
- acpi_ut_get_region_name
- (handler_obj->address_space.
- space_id), obj_desc,
- next_handler_obj,
- handler_obj));
-
- /*
- * Since the object we found it on was a device, then it
- * means that someone has already installed a handler for
- * the branch of the namespace from this device on. Just
- * bail out telling the walk routine to not traverse this
- * branch. This preserves the scoping rule for handlers.
- */
- return (AE_CTRL_DEPTH);
- }
-
- /* Walk the linked list of handlers attached to this device */
-
- next_handler_obj = next_handler_obj->address_space.next;
- }
-
- /*
- * As long as the device didn't have a handler for this
- * space we don't care about it. We just ignore it and
- * proceed.
- */
- return (AE_OK);
- }
-
- /* Object is a Region */
-
- if (obj_desc->region.space_id != handler_obj->address_space.space_id) {
- /*
- * This region is for a different address space
- * -- just ignore it
- */
- return (AE_OK);
- }
-
- /*
- * Now we have a region and it is for the handler's address
- * space type.
- *
- * First disconnect region for any previous handler (if any)
- */
- acpi_ev_detach_region(obj_desc, FALSE);
-
- /* Connect the region to the new handler */
-
- status = acpi_ev_attach_region(handler_obj, obj_desc, FALSE);
- 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;
- u8 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.handler_flags = 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
- *
- * PARAMETERS: walk_namespace callback
- *
- * DESCRIPTION: Run _REG method for region objects of the requested space_iD
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ev_reg_run(acpi_handle obj_handle,
- u32 level, void *context, void **return_value)
-{
- union acpi_operand_object *obj_desc;
- struct acpi_namespace_node *node;
- acpi_adr_space_type space_id;
- acpi_status status;
-
- space_id = *ACPI_CAST_PTR(acpi_adr_space_type, context);
-
- /* Convert and validate the device handle */
-
- node = acpi_ns_map_handle_to_node(obj_handle);
- if (!node) {
- return (AE_BAD_PARAMETER);
- }
-
- /*
- * We only care about regions.and objects
- * that are allowed to have address space handlers
- */
- if ((node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
- return (AE_OK);
- }
-
- /* Check for an existing internal object */
-
- obj_desc = acpi_ns_get_attached_object(node);
- if (!obj_desc) {
-
- /* No object, just exit */
-
- return (AE_OK);
- }
-
- /* Object is a Region */
-
- if (obj_desc->region.space_id != space_id) {
- /*
- * This region is for a different address space
- * -- just ignore it
- */
- return (AE_OK);
- }
-
- status = acpi_ev_execute_reg_method(obj_desc, 1);
- return (status);
-}