diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-09 11:55:14 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-09 11:55:14 -0800 |
commit | a3a798c88a14b35e5d4ca30716dbc9eb9a1ddfe2 (patch) | |
tree | 393969a0f1405237483c8c29b904690f2bb90559 /drivers/acpi/acpica/dsinit.c | |
parent | efcb3cf7f00c3c424db012380a8a974c2676a3c8 (diff) | |
parent | d97c0defba25a959a990f6d4759f43075540832e (diff) |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (94 commits)
ACPICA: hide private headers
ACPICA: create acpica/ directory
ACPI: fix build warning
ACPI : Use RSDT instead of XSDT by adding boot option of "acpi=rsdt"
ACPI: Avoid array address overflow when _CST MWAIT hint bits are set
fujitsu-laptop: Simplify SBLL/SBL2 backlight handling
fujitsu-laptop: Add BL power, LED control and radio state information
ACPICA: delete utcache.c
ACPICA: delete acdisasm.h
ACPICA: Update version to 20081204.
ACPICA: FADT: Update error msgs for consistency
ACPICA: FADT: set acpi_gbl_use_default_register_widths to TRUE by default
ACPICA: FADT parsing changes and fixes
ACPICA: Add ACPI_MUTEX_TYPE configuration option
ACPICA: Fixes for various ACPI data tables
ACPICA: Restructure includes into public/private
ACPI: remove private acpica headers from driver files
ACPI: reboot.c: use new acpi_reset interface
ACPICA: New: acpi_reset interface - write to reset register
ACPICA: Move all public H/W interfaces to new hwxface
...
Diffstat (limited to 'drivers/acpi/acpica/dsinit.c')
-rw-r--r-- | drivers/acpi/acpica/dsinit.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c new file mode 100644 index 000000000000..eb144b13d8fa --- /dev/null +++ b/drivers/acpi/acpica/dsinit.c @@ -0,0 +1,205 @@ +/****************************************************************************** + * + * Module Name: dsinit - Object initialization namespace walk + * + *****************************************************************************/ + +/* + * 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 "accommon.h" +#include "acdispat.h" +#include "acnamesp.h" +#include "actables.h" + +#define _COMPONENT ACPI_DISPATCHER +ACPI_MODULE_NAME("dsinit") + +/* Local prototypes */ +static acpi_status +acpi_ds_init_one_object(acpi_handle obj_handle, + u32 level, void *context, void **return_value); + +/******************************************************************************* + * + * FUNCTION: acpi_ds_init_one_object + * + * PARAMETERS: obj_handle - Node for the object + * Level - Current nesting level + * Context - Points to a init info struct + * return_value - Not used + * + * RETURN: Status + * + * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object + * within the namespace. + * + * Currently, the only objects that require initialization are: + * 1) Methods + * 2) Operation Regions + * + ******************************************************************************/ + +static acpi_status +acpi_ds_init_one_object(acpi_handle obj_handle, + u32 level, void *context, void **return_value) +{ + struct acpi_init_walk_info *info = + (struct acpi_init_walk_info *)context; + struct acpi_namespace_node *node = + (struct acpi_namespace_node *)obj_handle; + acpi_object_type type; + acpi_status status; + + ACPI_FUNCTION_ENTRY(); + + /* + * We are only interested in NS nodes owned by the table that + * was just loaded + */ + if (node->owner_id != info->owner_id) { + return (AE_OK); + } + + info->object_count++; + + /* And even then, we are only interested in a few object types */ + + type = acpi_ns_get_type(obj_handle); + + switch (type) { + case ACPI_TYPE_REGION: + + status = acpi_ds_initialize_region(obj_handle); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "During Region initialization %p [%4.4s]", + obj_handle, + acpi_ut_get_node_name(obj_handle))); + } + + info->op_region_count++; + break; + + case ACPI_TYPE_METHOD: + + info->method_count++; + break; + + case ACPI_TYPE_DEVICE: + + info->device_count++; + break; + + default: + break; + } + + /* + * We ignore errors from above, and always return OK, since + * we don't want to abort the walk on a single error. + */ + return (AE_OK); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_initialize_objects + * + * PARAMETERS: table_desc - Descriptor for parent ACPI table + * start_node - Root of subtree to be initialized. + * + * RETURN: Status + * + * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any + * necessary initialization on the objects found therein + * + ******************************************************************************/ + +acpi_status +acpi_ds_initialize_objects(u32 table_index, + struct acpi_namespace_node * start_node) +{ + acpi_status status; + struct acpi_init_walk_info info; + struct acpi_table_header *table; + acpi_owner_id owner_id; + + ACPI_FUNCTION_TRACE(ds_initialize_objects); + + status = acpi_tb_get_owner_id(table_index, &owner_id); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "**** Starting initialization of namespace objects ****\n")); + ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:")); + + info.method_count = 0; + info.op_region_count = 0; + info.object_count = 0; + info.device_count = 0; + info.table_index = table_index; + info.owner_id = owner_id; + + /* Walk entire namespace from the supplied root */ + + status = acpi_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX, + acpi_ds_init_one_object, &info, NULL); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace")); + } + + status = acpi_get_table_by_index(table_index, &table); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, + "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n", + table->signature, owner_id, info.object_count, + info.device_count, info.method_count, + info.op_region_count)); + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "%hd Methods, %hd Regions\n", info.method_count, + info.op_region_count)); + + return_ACPI_STATUS(AE_OK); +} |