b229cf92ee
Removed a device initialization optimization introduced in 20051216 where the _STA method was not run unless an _INI was also present for the same device. This optimization could cause problems because it could allow _INI methods to be run within a not-present device subtree (If a not-present device had no _INI, _STA would not be run, the not-present status would not be discovered, and the children of the device would be incorrectly traversed.) Implemented a new _STA optimization where namespace subtrees that do not contain _INI are identified and ignored during device initialization. Selectively running _STA can significantly improve boot time on large machines (with assistance from Len Brown.) Implemented support for the device initialization case where the returned _STA flags indicate a device not-present but functioning. In this case, _INI is not run, but the device children are examined for presence, as per the ACPI specification. Implemented an additional change to the IndexField support in order to conform to MS behavior. The value written to the Index Register is not simply a byte offset, it is a byte offset in units of the access width of the parent Index Field. (Fiodor Suietov) Defined and deployed a new OSL interface, acpi_os_validate_address(). This interface is called during the creation of all AML operation regions, and allows the host OS to exert control over what addresses it will allow the AML code to access. Operation Regions whose addresses are disallowed will cause a runtime exception when they are actually accessed (will not affect or abort table loading.) Defined and deployed a new OSL interface, acpi_os_validate_interface(). This interface allows the host OS to match the various "optional" interface/behavior strings for the _OSI predefined control method as appropriate (with assistance from Bjorn Helgaas.) Restructured and corrected various problems in the exception handling code paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod (with assistance from Takayoshi Kochi.) Modified the Linux source converter to ignore quoted string literals while converting identifiers from mixed to lower case. This will correct problems with the disassembler and other areas where such strings must not be modified. The ACPI_FUNCTION_* macros no longer require quotes around the function name. This allows the Linux source converter to convert the names, now that the converter ignores quoted strings. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
339 lines
9.8 KiB
C
339 lines
9.8 KiB
C
/*******************************************************************************
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*
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* Module Name: utstate - state object support procedures
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2006, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utstate")
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_create_pkg_state_and_push
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*
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* PARAMETERS: Object - Object to be added to the new state
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* Action - Increment/Decrement
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* state_list - List the state will be added to
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*
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* RETURN: Status
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*
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* DESCRIPTION: Create a new state and push it
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*
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******************************************************************************/
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acpi_status
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acpi_ut_create_pkg_state_and_push(void *internal_object,
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void *external_object,
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u16 index,
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union acpi_generic_state **state_list)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_ENTRY();
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state =
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acpi_ut_create_pkg_state(internal_object, external_object, index);
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if (!state) {
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return (AE_NO_MEMORY);
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}
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acpi_ut_push_generic_state(state_list, state);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_push_generic_state
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*
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* PARAMETERS: list_head - Head of the state stack
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* State - State object to push
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*
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* RETURN: None
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*
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* DESCRIPTION: Push a state object onto a state stack
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*
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******************************************************************************/
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void
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acpi_ut_push_generic_state(union acpi_generic_state **list_head,
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union acpi_generic_state *state)
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{
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ACPI_FUNCTION_TRACE(ut_push_generic_state);
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/* Push the state object onto the front of the list (stack) */
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state->common.next = *list_head;
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*list_head = state;
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_pop_generic_state
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*
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* PARAMETERS: list_head - Head of the state stack
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*
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* RETURN: The popped state object
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*
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* DESCRIPTION: Pop a state object from a state stack
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*
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******************************************************************************/
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union acpi_generic_state *acpi_ut_pop_generic_state(union acpi_generic_state
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**list_head)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_TRACE(ut_pop_generic_state);
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/* Remove the state object at the head of the list (stack) */
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state = *list_head;
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if (state) {
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/* Update the list head */
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*list_head = state->common.next;
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}
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return_PTR(state);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_create_generic_state
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*
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* PARAMETERS: None
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*
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* RETURN: The new state object. NULL on failure.
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*
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* DESCRIPTION: Create a generic state object. Attempt to obtain one from
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* the global state cache; If none available, create a new one.
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*
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******************************************************************************/
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union acpi_generic_state *acpi_ut_create_generic_state(void)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_ENTRY();
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state = acpi_os_acquire_object(acpi_gbl_state_cache);
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if (state) {
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/* Initialize */
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memset(state, 0, sizeof(union acpi_generic_state));
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state->common.descriptor_type = ACPI_DESC_TYPE_STATE;
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}
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return (state);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_create_thread_state
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*
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* PARAMETERS: None
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*
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* RETURN: New Thread State. NULL on failure
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*
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* DESCRIPTION: Create a "Thread State" - a flavor of the generic state used
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* to track per-thread info during method execution
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*
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******************************************************************************/
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struct acpi_thread_state *acpi_ut_create_thread_state(void)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_TRACE(ut_create_thread_state);
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/* Create the generic state object */
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state = acpi_ut_create_generic_state();
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if (!state) {
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return_PTR(NULL);
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}
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/* Init fields specific to the update struct */
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state->common.descriptor_type = ACPI_DESC_TYPE_STATE_THREAD;
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state->thread.thread_id = acpi_os_get_thread_id();
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return_PTR((struct acpi_thread_state *)state);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_create_update_state
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*
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* PARAMETERS: Object - Initial Object to be installed in the state
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* Action - Update action to be performed
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*
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* RETURN: New state object, null on failure
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*
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* DESCRIPTION: Create an "Update State" - a flavor of the generic state used
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* to update reference counts and delete complex objects such
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* as packages.
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*
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******************************************************************************/
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union acpi_generic_state *acpi_ut_create_update_state(union acpi_operand_object
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*object, u16 action)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_TRACE_PTR(ut_create_update_state, object);
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/* Create the generic state object */
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state = acpi_ut_create_generic_state();
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if (!state) {
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return_PTR(NULL);
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}
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/* Init fields specific to the update struct */
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state->common.descriptor_type = ACPI_DESC_TYPE_STATE_UPDATE;
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state->update.object = object;
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state->update.value = action;
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return_PTR(state);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_create_pkg_state
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*
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* PARAMETERS: Object - Initial Object to be installed in the state
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* Action - Update action to be performed
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*
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* RETURN: New state object, null on failure
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*
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* DESCRIPTION: Create a "Package State"
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*
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******************************************************************************/
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union acpi_generic_state *acpi_ut_create_pkg_state(void *internal_object,
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void *external_object,
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u16 index)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_TRACE_PTR(ut_create_pkg_state, internal_object);
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/* Create the generic state object */
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state = acpi_ut_create_generic_state();
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if (!state) {
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return_PTR(NULL);
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}
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/* Init fields specific to the update struct */
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state->common.descriptor_type = ACPI_DESC_TYPE_STATE_PACKAGE;
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state->pkg.source_object = (union acpi_operand_object *)internal_object;
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state->pkg.dest_object = external_object;
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state->pkg.index = index;
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state->pkg.num_packages = 1;
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return_PTR(state);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_create_control_state
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*
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* PARAMETERS: None
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*
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* RETURN: New state object, null on failure
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*
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* DESCRIPTION: Create a "Control State" - a flavor of the generic state used
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* to support nested IF/WHILE constructs in the AML.
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*
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******************************************************************************/
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union acpi_generic_state *acpi_ut_create_control_state(void)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_TRACE(ut_create_control_state);
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/* Create the generic state object */
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state = acpi_ut_create_generic_state();
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if (!state) {
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return_PTR(NULL);
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}
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/* Init fields specific to the control struct */
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state->common.descriptor_type = ACPI_DESC_TYPE_STATE_CONTROL;
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state->common.state = ACPI_CONTROL_CONDITIONAL_EXECUTING;
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return_PTR(state);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_delete_generic_state
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*
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* PARAMETERS: State - The state object to be deleted
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*
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* RETURN: None
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*
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* DESCRIPTION: Release a state object to the state cache. NULL state objects
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* are ignored.
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*
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******************************************************************************/
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void acpi_ut_delete_generic_state(union acpi_generic_state *state)
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{
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ACPI_FUNCTION_TRACE(ut_delete_generic_state);
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/* Ignore null state */
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if (state) {
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(void)acpi_os_release_object(acpi_gbl_state_cache, state);
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}
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return_VOID;
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}
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