From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/acpi/namespace/nsinit.c | 441 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 441 insertions(+) create mode 100644 drivers/acpi/namespace/nsinit.c (limited to 'drivers/acpi/namespace/nsinit.c') diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c new file mode 100644 index 000000000000..4a46b380605b --- /dev/null +++ b/drivers/acpi/namespace/nsinit.c @@ -0,0 +1,441 @@ +/****************************************************************************** + * + * Module Name: nsinit - namespace initialization + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2005, R. Byron Moore + * 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 +#include +#include +#include + +#define _COMPONENT ACPI_NAMESPACE + ACPI_MODULE_NAME ("nsinit") + + +/******************************************************************************* + * + * FUNCTION: acpi_ns_initialize_objects + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Walk the entire namespace and perform any necessary + * initialization on the objects found therein + * + ******************************************************************************/ + +acpi_status +acpi_ns_initialize_objects ( + void) +{ + acpi_status status; + struct acpi_init_walk_info info; + + + ACPI_FUNCTION_TRACE ("ns_initialize_objects"); + + + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, + "**** Starting initialization of namespace objects ****\n")); + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, + "Completing Region/Field/Buffer/Package initialization:")); + + /* Set all init info to zero */ + + ACPI_MEMSET (&info, 0, sizeof (struct acpi_init_walk_info)); + + /* Walk entire namespace from the supplied root */ + + status = acpi_walk_namespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, + ACPI_UINT32_MAX, acpi_ns_init_one_object, + &info, NULL); + if (ACPI_FAILURE (status)) { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed! %s\n", + acpi_format_exception (status))); + } + + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, + "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n", + info.op_region_init, info.op_region_count, + info.field_init, info.field_count, + info.buffer_init, info.buffer_count, + info.package_init, info.package_count, info.object_count)); + + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, + "%hd Control Methods found\n", info.method_count)); + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, + "%hd Op Regions found\n", info.op_region_count)); + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: acpi_ns_initialize_devices + * + * PARAMETERS: None + * + * RETURN: acpi_status + * + * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. + * This means running _INI on all present devices. + * + * Note: We install PCI config space handler on region access, + * not here. + * + ******************************************************************************/ + +acpi_status +acpi_ns_initialize_devices ( + void) +{ + acpi_status status; + struct acpi_device_walk_info info; + + + ACPI_FUNCTION_TRACE ("ns_initialize_devices"); + + + /* Init counters */ + + info.device_count = 0; + info.num_STA = 0; + info.num_INI = 0; + + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, + "Executing all Device _STA and_INI methods:")); + + status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE (status)) { + return_ACPI_STATUS (status); + } + + /* Walk namespace for all objects */ + + status = acpi_ns_walk_namespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, + ACPI_UINT32_MAX, TRUE, acpi_ns_init_one_device, &info, NULL); + + (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + + if (ACPI_FAILURE (status)) { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed! %s\n", + acpi_format_exception (status))); + } + + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, + "\n%hd Devices found containing: %hd _STA, %hd _INI methods\n", + info.device_count, info.num_STA, info.num_INI)); + + return_ACPI_STATUS (status); +} + + +/******************************************************************************* + * + * FUNCTION: acpi_ns_init_one_object + * + * PARAMETERS: obj_handle - Node + * 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) Op Regions + * + ******************************************************************************/ + +acpi_status +acpi_ns_init_one_object ( + acpi_handle obj_handle, + u32 level, + void *context, + void **return_value) +{ + acpi_object_type type; + acpi_status status; + struct acpi_init_walk_info *info = (struct acpi_init_walk_info *) context; + struct acpi_namespace_node *node = (struct acpi_namespace_node *) obj_handle; + union acpi_operand_object *obj_desc; + + + ACPI_FUNCTION_NAME ("ns_init_one_object"); + + + info->object_count++; + + /* And even then, we are only interested in a few object types */ + + type = acpi_ns_get_type (obj_handle); + obj_desc = acpi_ns_get_attached_object (node); + if (!obj_desc) { + return (AE_OK); + } + + /* Increment counters for object types we are looking for */ + + switch (type) { + case ACPI_TYPE_REGION: + info->op_region_count++; + break; + + case ACPI_TYPE_BUFFER_FIELD: + info->field_count++; + break; + + case ACPI_TYPE_BUFFER: + info->buffer_count++; + break; + + case ACPI_TYPE_PACKAGE: + info->package_count++; + break; + + default: + + /* No init required, just exit now */ + return (AE_OK); + } + + /* + * If the object is already initialized, nothing else to do + */ + if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { + return (AE_OK); + } + + /* + * Must lock the interpreter before executing AML code + */ + status = acpi_ex_enter_interpreter (); + if (ACPI_FAILURE (status)) { + return (status); + } + + /* + * Each of these types can contain executable AML code within the + * declaration. + */ + switch (type) { + case ACPI_TYPE_REGION: + + info->op_region_init++; + status = acpi_ds_get_region_arguments (obj_desc); + break; + + case ACPI_TYPE_BUFFER_FIELD: + + info->field_init++; + status = acpi_ds_get_buffer_field_arguments (obj_desc); + break; + + case ACPI_TYPE_BUFFER: + + info->buffer_init++; + status = acpi_ds_get_buffer_arguments (obj_desc); + break; + + case ACPI_TYPE_PACKAGE: + + info->package_init++; + status = acpi_ds_get_package_arguments (obj_desc); + break; + + default: + /* No other types can get here */ + break; + } + + if (ACPI_FAILURE (status)) { + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Could not execute arguments for [%4.4s] (%s), %s\n", + acpi_ut_get_node_name (node), acpi_ut_get_type_name (type), + acpi_format_exception (status))); + } + + /* + * Print a dot for each object unless we are going to print the entire + * pathname + */ + if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) { + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); + } + + /* + * We ignore errors from above, and always return OK, since we don't want + * to abort the walk on any single error. + */ + acpi_ex_exit_interpreter (); + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: acpi_ns_init_one_device + * + * PARAMETERS: acpi_walk_callback + * + * RETURN: acpi_status + * + * DESCRIPTION: This is called once per device soon after ACPI is enabled + * to initialize each device. It determines if the device is + * present, and if so, calls _INI. + * + ******************************************************************************/ + +acpi_status +acpi_ns_init_one_device ( + acpi_handle obj_handle, + u32 nesting_level, + void *context, + void **return_value) +{ + struct acpi_device_walk_info *info = (struct acpi_device_walk_info *) context; + struct acpi_parameter_info pinfo; + u32 flags; + acpi_status status; + + + ACPI_FUNCTION_TRACE ("ns_init_one_device"); + + + pinfo.parameters = NULL; + pinfo.parameter_type = ACPI_PARAM_ARGS; + + pinfo.node = acpi_ns_map_handle_to_node (obj_handle); + if (!pinfo.node) { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* + * We will run _STA/_INI on Devices, Processors and thermal_zones only + */ + if ((pinfo.node->type != ACPI_TYPE_DEVICE) && + (pinfo.node->type != ACPI_TYPE_PROCESSOR) && + (pinfo.node->type != ACPI_TYPE_THERMAL)) { + return_ACPI_STATUS (AE_OK); + } + + if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) && + (!(acpi_dbg_level & ACPI_LV_INFO))) { + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); + } + + info->device_count++; + + /* + * Run _STA to determine if we can run _INI on the device. + */ + ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname (ACPI_TYPE_METHOD, pinfo.node, "_STA")); + status = acpi_ut_execute_STA (pinfo.node, &flags); + + if (ACPI_FAILURE (status)) { + if (pinfo.node->type == ACPI_TYPE_DEVICE) { + /* Ignore error and move on to next device */ + + return_ACPI_STATUS (AE_OK); + } + + /* _STA is not required for Processor or thermal_zone objects */ + } + else { + info->num_STA++; + + if (!(flags & 0x01)) { + /* Don't look at children of a not present device */ + + return_ACPI_STATUS(AE_CTRL_DEPTH); + } + } + + /* + * The device is present. Run _INI. + */ + ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname (ACPI_TYPE_METHOD, pinfo.node, "_INI")); + status = acpi_ns_evaluate_relative ("_INI", &pinfo); + if (ACPI_FAILURE (status)) { + /* No _INI (AE_NOT_FOUND) means device requires no initialization */ + + if (status != AE_NOT_FOUND) { + /* Ignore error and move on to next device */ + +#ifdef ACPI_DEBUG_OUTPUT + char *scope_name = acpi_ns_get_external_pathname (pinfo.node); + + ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n", + scope_name, acpi_format_exception (status))); + + ACPI_MEM_FREE (scope_name); +#endif + } + + status = AE_OK; + } + else { + /* Delete any return object (especially if implicit_return is enabled) */ + + if (pinfo.return_object) { + acpi_ut_remove_reference (pinfo.return_object); + } + + /* Count of successful INIs */ + + info->num_INI++; + } + + if (acpi_gbl_init_handler) { + /* External initialization handler is present, call it */ + + status = acpi_gbl_init_handler (pinfo.node, ACPI_INIT_DEVICE_INI); + } + + return_ACPI_STATUS (status); +} -- cgit v1.2.3