diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/acpi/executer/excreate.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-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!
Diffstat (limited to 'drivers/acpi/executer/excreate.c')
-rw-r--r-- | drivers/acpi/executer/excreate.c | 646 |
1 files changed, 646 insertions, 0 deletions
diff --git a/drivers/acpi/executer/excreate.c b/drivers/acpi/executer/excreate.c new file mode 100644 index 000000000000..d94c260dac6d --- /dev/null +++ b/drivers/acpi/executer/excreate.c @@ -0,0 +1,646 @@ +/****************************************************************************** + * + * Module Name: excreate - Named object creation + * + *****************************************************************************/ + +/* + * 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 <acpi/acpi.h> +#include <acpi/acinterp.h> +#include <acpi/amlcode.h> +#include <acpi/acnamesp.h> +#include <acpi/acevents.h> +#include <acpi/actables.h> + + +#define _COMPONENT ACPI_EXECUTER + ACPI_MODULE_NAME ("excreate") + + +#ifndef ACPI_NO_METHOD_EXECUTION +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_alias + * + * PARAMETERS: walk_state - Current state, contains operands + * + * RETURN: Status + * + * DESCRIPTION: Create a new named alias + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_alias ( + struct acpi_walk_state *walk_state) +{ + struct acpi_namespace_node *target_node; + struct acpi_namespace_node *alias_node; + acpi_status status = AE_OK; + + + ACPI_FUNCTION_TRACE ("ex_create_alias"); + + + /* Get the source/alias operands (both namespace nodes) */ + + alias_node = (struct acpi_namespace_node *) walk_state->operands[0]; + target_node = (struct acpi_namespace_node *) walk_state->operands[1]; + + if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) || + (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) { + /* + * Dereference an existing alias so that we don't create a chain + * of aliases. With this code, we guarantee that an alias is + * always exactly one level of indirection away from the + * actual aliased name. + */ + target_node = ACPI_CAST_PTR (struct acpi_namespace_node, target_node->object); + } + + /* + * For objects that can never change (i.e., the NS node will + * permanently point to the same object), we can simply attach + * the object to the new NS node. For other objects (such as + * Integers, buffers, etc.), we have to point the Alias node + * to the original Node. + */ + switch (target_node->type) { + case ACPI_TYPE_INTEGER: + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + case ACPI_TYPE_PACKAGE: + case ACPI_TYPE_BUFFER_FIELD: + + /* + * The new alias has the type ALIAS and points to the original + * NS node, not the object itself. This is because for these + * types, the object can change dynamically via a Store. + */ + alias_node->type = ACPI_TYPE_LOCAL_ALIAS; + alias_node->object = ACPI_CAST_PTR (union acpi_operand_object, target_node); + break; + + case ACPI_TYPE_METHOD: + + /* + * The new alias has the type ALIAS and points to the original + * NS node, not the object itself. This is because for these + * types, the object can change dynamically via a Store. + */ + alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS; + alias_node->object = ACPI_CAST_PTR (union acpi_operand_object, target_node); + break; + + default: + + /* Attach the original source object to the new Alias Node */ + + /* + * The new alias assumes the type of the target, and it points + * to the same object. The reference count of the object has an + * additional reference to prevent deletion out from under either the + * target node or the alias Node + */ + status = acpi_ns_attach_object (alias_node, + acpi_ns_get_attached_object (target_node), + target_node->type); + break; + } + + /* Since both operands are Nodes, we don't need to delete them */ + + return_ACPI_STATUS (status); +} + + +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_event + * + * PARAMETERS: walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Create a new event object + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_event ( + struct acpi_walk_state *walk_state) +{ + acpi_status status; + union acpi_operand_object *obj_desc; + + + ACPI_FUNCTION_TRACE ("ex_create_event"); + + + obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_EVENT); + if (!obj_desc) { + status = AE_NO_MEMORY; + goto cleanup; + } + + /* + * Create the actual OS semaphore, with zero initial units -- meaning + * that the event is created in an unsignalled state + */ + status = acpi_os_create_semaphore (ACPI_NO_UNIT_LIMIT, 0, + &obj_desc->event.semaphore); + if (ACPI_FAILURE (status)) { + goto cleanup; + } + + /* Attach object to the Node */ + + status = acpi_ns_attach_object ((struct acpi_namespace_node *) walk_state->operands[0], + obj_desc, ACPI_TYPE_EVENT); + +cleanup: + /* + * Remove local reference to the object (on error, will cause deletion + * of both object and semaphore if present.) + */ + acpi_ut_remove_reference (obj_desc); + return_ACPI_STATUS (status); +} + + +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_mutex + * + * PARAMETERS: walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Create a new mutex object + * + * Mutex (Name[0], sync_level[1]) + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_mutex ( + struct acpi_walk_state *walk_state) +{ + acpi_status status = AE_OK; + union acpi_operand_object *obj_desc; + + + ACPI_FUNCTION_TRACE_PTR ("ex_create_mutex", ACPI_WALK_OPERANDS); + + + /* Create the new mutex object */ + + obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_MUTEX); + if (!obj_desc) { + status = AE_NO_MEMORY; + goto cleanup; + } + + /* + * Create the actual OS semaphore. + * One unit max to make it a mutex, with one initial unit to allow + * the mutex to be acquired. + */ + status = acpi_os_create_semaphore (1, 1, &obj_desc->mutex.semaphore); + if (ACPI_FAILURE (status)) { + goto cleanup; + } + + /* Init object and attach to NS node */ + + obj_desc->mutex.sync_level = (u8) walk_state->operands[1]->integer.value; + obj_desc->mutex.node = (struct acpi_namespace_node *) walk_state->operands[0]; + + status = acpi_ns_attach_object (obj_desc->mutex.node, + obj_desc, ACPI_TYPE_MUTEX); + + +cleanup: + /* + * Remove local reference to the object (on error, will cause deletion + * of both object and semaphore if present.) + */ + acpi_ut_remove_reference (obj_desc); + return_ACPI_STATUS (status); +} + + +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_region + * + * PARAMETERS: aml_start - Pointer to the region declaration AML + * aml_length - Max length of the declaration AML + * Operands - List of operands for the opcode + * walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Create a new operation region object + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_region ( + u8 *aml_start, + u32 aml_length, + u8 region_space, + struct acpi_walk_state *walk_state) +{ + acpi_status status; + union acpi_operand_object *obj_desc; + struct acpi_namespace_node *node; + union acpi_operand_object *region_obj2; + + + ACPI_FUNCTION_TRACE ("ex_create_region"); + + + /* Get the Namespace Node */ + + node = walk_state->op->common.node; + + /* + * If the region object is already attached to this node, + * just return + */ + if (acpi_ns_get_attached_object (node)) { + return_ACPI_STATUS (AE_OK); + } + + /* + * Space ID must be one of the predefined IDs, or in the user-defined + * range + */ + if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) && + (region_space < ACPI_USER_REGION_BEGIN)) { + ACPI_REPORT_ERROR (("Invalid address_space type %X\n", region_space)); + return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID); + } + + ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (%X)\n", + acpi_ut_get_region_name (region_space), region_space)); + + /* Create the region descriptor */ + + obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_REGION); + if (!obj_desc) { + status = AE_NO_MEMORY; + goto cleanup; + } + + /* + * Remember location in AML stream of address & length + * operands since they need to be evaluated at run time. + */ + region_obj2 = obj_desc->common.next_object; + region_obj2->extra.aml_start = aml_start; + region_obj2->extra.aml_length = aml_length; + + /* Init the region from the operands */ + + obj_desc->region.space_id = region_space; + obj_desc->region.address = 0; + obj_desc->region.length = 0; + obj_desc->region.node = node; + + /* Install the new region object in the parent Node */ + + status = acpi_ns_attach_object (node, obj_desc, ACPI_TYPE_REGION); + + +cleanup: + + /* Remove local reference to the object */ + + acpi_ut_remove_reference (obj_desc); + return_ACPI_STATUS (status); +} + + +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_table_region + * + * PARAMETERS: walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Create a new data_table_region object + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_table_region ( + struct acpi_walk_state *walk_state) +{ + acpi_status status; + union acpi_operand_object **operand = &walk_state->operands[0]; + union acpi_operand_object *obj_desc; + struct acpi_namespace_node *node; + struct acpi_table_header *table; + union acpi_operand_object *region_obj2; + + + ACPI_FUNCTION_TRACE ("ex_create_table_region"); + + + /* Get the Node from the object stack */ + + node = walk_state->op->common.node; + + /* + * If the region object is already attached to this node, + * just return + */ + if (acpi_ns_get_attached_object (node)) { + return_ACPI_STATUS (AE_OK); + } + + /* Find the ACPI table */ + + status = acpi_tb_find_table (operand[1]->string.pointer, + operand[2]->string.pointer, + operand[3]->string.pointer, &table); + if (ACPI_FAILURE (status)) { + return_ACPI_STATUS (status); + } + + /* Create the region descriptor */ + + obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_REGION); + if (!obj_desc) { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + region_obj2 = obj_desc->common.next_object; + region_obj2->extra.region_context = NULL; + + /* Init the region from the operands */ + + obj_desc->region.space_id = REGION_DATA_TABLE; + obj_desc->region.address = (acpi_physical_address) ACPI_TO_INTEGER (table); + obj_desc->region.length = table->length; + obj_desc->region.node = node; + obj_desc->region.flags = AOPOBJ_DATA_VALID; + + /* Install the new region object in the parent Node */ + + status = acpi_ns_attach_object (node, obj_desc, ACPI_TYPE_REGION); + if (ACPI_FAILURE (status)) { + goto cleanup; + } + + status = acpi_ev_initialize_region (obj_desc, FALSE); + if (ACPI_FAILURE (status)) { + if (status == AE_NOT_EXIST) { + status = AE_OK; + } + else { + goto cleanup; + } + } + + obj_desc->region.flags |= AOPOBJ_SETUP_COMPLETE; + + +cleanup: + + /* Remove local reference to the object */ + + acpi_ut_remove_reference (obj_desc); + return_ACPI_STATUS (status); +} + + +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_processor + * + * PARAMETERS: walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Create a new processor object and populate the fields + * + * Processor (Name[0], cpu_iD[1], pblock_addr[2], pblock_length[3]) + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_processor ( + struct acpi_walk_state *walk_state) +{ + union acpi_operand_object **operand = &walk_state->operands[0]; + union acpi_operand_object *obj_desc; + acpi_status status; + + + ACPI_FUNCTION_TRACE_PTR ("ex_create_processor", walk_state); + + + /* Create the processor object */ + + obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_PROCESSOR); + if (!obj_desc) { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* + * Initialize the processor object from the operands + */ + obj_desc->processor.proc_id = (u8) operand[1]->integer.value; + obj_desc->processor.address = (acpi_io_address) operand[2]->integer.value; + obj_desc->processor.length = (u8) operand[3]->integer.value; + + /* Install the processor object in the parent Node */ + + status = acpi_ns_attach_object ((struct acpi_namespace_node *) operand[0], + obj_desc, ACPI_TYPE_PROCESSOR); + + /* Remove local reference to the object */ + + acpi_ut_remove_reference (obj_desc); + return_ACPI_STATUS (status); +} + + +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_power_resource + * + * PARAMETERS: walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Create a new power_resource object and populate the fields + * + * power_resource (Name[0], system_level[1], resource_order[2]) + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_power_resource ( + struct acpi_walk_state *walk_state) +{ + union acpi_operand_object **operand = &walk_state->operands[0]; + acpi_status status; + union acpi_operand_object *obj_desc; + + + ACPI_FUNCTION_TRACE_PTR ("ex_create_power_resource", walk_state); + + + /* Create the power resource object */ + + obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_POWER); + if (!obj_desc) { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Initialize the power object from the operands */ + + obj_desc->power_resource.system_level = (u8) operand[1]->integer.value; + obj_desc->power_resource.resource_order = (u16) operand[2]->integer.value; + + /* Install the power resource object in the parent Node */ + + status = acpi_ns_attach_object ((struct acpi_namespace_node *) operand[0], + obj_desc, ACPI_TYPE_POWER); + + /* Remove local reference to the object */ + + acpi_ut_remove_reference (obj_desc); + return_ACPI_STATUS (status); +} + +#endif + +/***************************************************************************** + * + * FUNCTION: acpi_ex_create_method + * + * PARAMETERS: aml_start - First byte of the method's AML + * aml_length - AML byte count for this method + * walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Create a new method object + * + ****************************************************************************/ + +acpi_status +acpi_ex_create_method ( + u8 *aml_start, + u32 aml_length, + struct acpi_walk_state *walk_state) +{ + union acpi_operand_object **operand = &walk_state->operands[0]; + union acpi_operand_object *obj_desc; + acpi_status status; + u8 method_flags; + + + ACPI_FUNCTION_TRACE_PTR ("ex_create_method", walk_state); + + + /* Create a new method object */ + + obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_METHOD); + if (!obj_desc) { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Save the method's AML pointer and length */ + + obj_desc->method.aml_start = aml_start; + obj_desc->method.aml_length = aml_length; + + /* + * Disassemble the method flags. Split off the Arg Count + * for efficiency + */ + method_flags = (u8) operand[1]->integer.value; + + obj_desc->method.method_flags = (u8) (method_flags & ~AML_METHOD_ARG_COUNT); + obj_desc->method.param_count = (u8) (method_flags & AML_METHOD_ARG_COUNT); + + /* + * Get the concurrency count. If required, a semaphore will be + * created for this method when it is parsed. + */ + if (acpi_gbl_all_methods_serialized) { + obj_desc->method.concurrency = 1; + obj_desc->method.method_flags |= AML_METHOD_SERIALIZED; + } + else if (method_flags & AML_METHOD_SERIALIZED) { + /* + * ACPI 1.0: Concurrency = 1 + * ACPI 2.0: Concurrency = (sync_level (in method declaration) + 1) + */ + obj_desc->method.concurrency = (u8) + (((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4) + 1); + } + else { + obj_desc->method.concurrency = ACPI_INFINITE_CONCURRENCY; + } + + /* Attach the new object to the method Node */ + + status = acpi_ns_attach_object ((struct acpi_namespace_node *) operand[0], + obj_desc, ACPI_TYPE_METHOD); + + /* Remove local reference to the object */ + + acpi_ut_remove_reference (obj_desc); + + /* Remove a reference to the operand */ + + acpi_ut_remove_reference (operand[1]); + return_ACPI_STATUS (status); +} + + |