![Lv Zheng](/assets/img/avatar_default.png)
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f This patch removes unwanted spaces for typedef. This solution doesn't cover function types. Note that the linuxize result of this commit is very giant and should have many conflicts against the current Linux upstream. Thus it is required to modify the linuxize result of this commit and the commits around it manually in order to have them merged to the Linux upstream. Since this is very costy, we should do this only once, and if we can't ensure to do this only once, we need to revert the Linux code to the wrong indentation result before merging the linuxize result of this commit. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b2294cae Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
674 lines
19 KiB
C
674 lines
19 KiB
C
/******************************************************************************
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*
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* Module Name: nsxfname - Public interfaces to the ACPI subsystem
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* ACPI Namespace oriented interfaces
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2016, Intel Corp.
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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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#define EXPORT_ACPI_INTERFACES
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acnamesp.h"
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#include "acparser.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_NAMESPACE
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ACPI_MODULE_NAME("nsxfname")
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/* Local prototypes */
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static char *acpi_ns_copy_device_id(struct acpi_pnp_device_id *dest,
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struct acpi_pnp_device_id *source,
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char *string_area);
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/******************************************************************************
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*
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* FUNCTION: acpi_get_handle
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*
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* PARAMETERS: parent - Object to search under (search scope).
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* pathname - Pointer to an asciiz string containing the
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* name
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* ret_handle - Where the return handle is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: This routine will search for a caller specified name in the
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* name space. The caller can restrict the search region by
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* specifying a non NULL parent. The parent value is itself a
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* namespace handle.
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*
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******************************************************************************/
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acpi_status
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acpi_get_handle(acpi_handle parent,
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acpi_string pathname, acpi_handle *ret_handle)
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{
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acpi_status status;
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struct acpi_namespace_node *node = NULL;
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struct acpi_namespace_node *prefix_node = NULL;
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ACPI_FUNCTION_ENTRY();
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/* Parameter Validation */
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if (!ret_handle || !pathname) {
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return (AE_BAD_PARAMETER);
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}
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/* Convert a parent handle to a prefix node */
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if (parent) {
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prefix_node = acpi_ns_validate_handle(parent);
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if (!prefix_node) {
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return (AE_BAD_PARAMETER);
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}
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}
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/*
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* Valid cases are:
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* 1) Fully qualified pathname
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* 2) Parent + Relative pathname
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*
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* Error for <null Parent + relative path>
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*/
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if (ACPI_IS_ROOT_PREFIX(pathname[0])) {
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/* Pathname is fully qualified (starts with '\') */
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/* Special case for root-only, since we can't search for it */
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if (!strcmp(pathname, ACPI_NS_ROOT_PATH)) {
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*ret_handle =
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ACPI_CAST_PTR(acpi_handle, acpi_gbl_root_node);
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return (AE_OK);
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}
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} else if (!prefix_node) {
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/* Relative path with null prefix is disallowed */
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return (AE_BAD_PARAMETER);
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}
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/* Find the Node and convert to a handle */
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status =
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acpi_ns_get_node(prefix_node, pathname, ACPI_NS_NO_UPSEARCH, &node);
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if (ACPI_SUCCESS(status)) {
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*ret_handle = ACPI_CAST_PTR(acpi_handle, node);
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}
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return (status);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_handle)
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/******************************************************************************
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*
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* FUNCTION: acpi_get_name
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*
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* PARAMETERS: handle - Handle to be converted to a pathname
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* name_type - Full pathname or single segment
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* buffer - Buffer for returned path
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*
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* RETURN: Pointer to a string containing the fully qualified Name.
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*
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* DESCRIPTION: This routine returns the fully qualified name associated with
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* the Handle parameter. This and the acpi_pathname_to_handle are
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* complementary functions.
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*
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******************************************************************************/
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acpi_status
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acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer *buffer)
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{
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acpi_status status;
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struct acpi_namespace_node *node;
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const char *node_name;
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/* Parameter validation */
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if (name_type > ACPI_NAME_TYPE_MAX) {
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return (AE_BAD_PARAMETER);
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}
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status = acpi_ut_validate_buffer(buffer);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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if (name_type == ACPI_FULL_PATHNAME ||
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name_type == ACPI_FULL_PATHNAME_NO_TRAILING) {
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/* Get the full pathname (From the namespace root) */
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status = acpi_ns_handle_to_pathname(handle, buffer,
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name_type ==
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ACPI_FULL_PATHNAME ? FALSE :
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TRUE);
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return (status);
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}
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/*
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* Wants the single segment ACPI name.
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* Validate handle and convert to a namespace Node
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*/
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status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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node = acpi_ns_validate_handle(handle);
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if (!node) {
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status = AE_BAD_PARAMETER;
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goto unlock_and_exit;
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}
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/* Validate/Allocate/Clear caller buffer */
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status = acpi_ut_initialize_buffer(buffer, ACPI_PATH_SEGMENT_LENGTH);
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if (ACPI_FAILURE(status)) {
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goto unlock_and_exit;
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}
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/* Just copy the ACPI name from the Node and zero terminate it */
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node_name = acpi_ut_get_node_name(node);
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ACPI_MOVE_NAME(buffer->pointer, node_name);
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((char *)buffer->pointer)[ACPI_NAME_SIZE] = 0;
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status = AE_OK;
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unlock_and_exit:
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(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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return (status);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_name)
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/******************************************************************************
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*
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* FUNCTION: acpi_ns_copy_device_id
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*
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* PARAMETERS: dest - Pointer to the destination PNP_DEVICE_ID
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* source - Pointer to the source PNP_DEVICE_ID
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* string_area - Pointer to where to copy the dest string
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*
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* RETURN: Pointer to the next string area
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*
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* DESCRIPTION: Copy a single PNP_DEVICE_ID, including the string data.
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*
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******************************************************************************/
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static char *acpi_ns_copy_device_id(struct acpi_pnp_device_id *dest,
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struct acpi_pnp_device_id *source,
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char *string_area)
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{
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/* Create the destination PNP_DEVICE_ID */
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dest->string = string_area;
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dest->length = source->length;
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/* Copy actual string and return a pointer to the next string area */
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memcpy(string_area, source->string, source->length);
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return (string_area + source->length);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_get_object_info
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*
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* PARAMETERS: handle - Object Handle
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* return_buffer - Where the info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Returns information about an object as gleaned from the
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* namespace node and possibly by running several standard
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* control methods (Such as in the case of a device.)
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*
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* For Device and Processor objects, run the Device _HID, _UID, _CID, _STA,
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* _CLS, _ADR, _sx_w, and _sx_d methods.
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*
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* Note: Allocates the return buffer, must be freed by the caller.
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*
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* Note: This interface is intended to be used during the initial device
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* discovery namespace traversal. Therefore, no complex methods can be
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* executed, especially those that access operation regions. Therefore, do
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* not add any additional methods that could cause problems in this area.
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* this was the fate of the _SUB method which was found to cause such
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* problems and was removed (11/2015).
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*
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******************************************************************************/
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acpi_status
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acpi_get_object_info(acpi_handle handle,
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struct acpi_device_info **return_buffer)
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{
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struct acpi_namespace_node *node;
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struct acpi_device_info *info;
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struct acpi_pnp_device_id_list *cid_list = NULL;
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struct acpi_pnp_device_id *hid = NULL;
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struct acpi_pnp_device_id *uid = NULL;
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struct acpi_pnp_device_id *cls = NULL;
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char *next_id_string;
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acpi_object_type type;
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acpi_name name;
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u8 param_count = 0;
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u16 valid = 0;
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u32 info_size;
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u32 i;
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acpi_status status;
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/* Parameter validation */
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if (!handle || !return_buffer) {
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return (AE_BAD_PARAMETER);
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}
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status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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node = acpi_ns_validate_handle(handle);
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if (!node) {
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(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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return (AE_BAD_PARAMETER);
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}
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/* Get the namespace node data while the namespace is locked */
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info_size = sizeof(struct acpi_device_info);
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type = node->type;
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name = node->name.integer;
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if (node->type == ACPI_TYPE_METHOD) {
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param_count = node->object->method.param_count;
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}
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status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) {
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/*
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* Get extra info for ACPI Device/Processor objects only:
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* Run the Device _HID, _UID, _CLS, and _CID methods.
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*
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* Note: none of these methods are required, so they may or may
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* not be present for this device. The Info->Valid bitfield is used
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* to indicate which methods were found and run successfully.
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*/
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/* Execute the Device._HID method */
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status = acpi_ut_execute_HID(node, &hid);
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if (ACPI_SUCCESS(status)) {
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info_size += hid->length;
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valid |= ACPI_VALID_HID;
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}
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/* Execute the Device._UID method */
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status = acpi_ut_execute_UID(node, &uid);
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if (ACPI_SUCCESS(status)) {
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info_size += uid->length;
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valid |= ACPI_VALID_UID;
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}
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/* Execute the Device._CID method */
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status = acpi_ut_execute_CID(node, &cid_list);
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if (ACPI_SUCCESS(status)) {
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/* Add size of CID strings and CID pointer array */
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info_size +=
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(cid_list->list_size -
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sizeof(struct acpi_pnp_device_id_list));
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valid |= ACPI_VALID_CID;
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}
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/* Execute the Device._CLS method */
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status = acpi_ut_execute_CLS(node, &cls);
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if (ACPI_SUCCESS(status)) {
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info_size += cls->length;
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valid |= ACPI_VALID_CLS;
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}
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}
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/*
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* Now that we have the variable-length data, we can allocate the
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* return buffer
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*/
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info = ACPI_ALLOCATE_ZEROED(info_size);
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if (!info) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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/* Get the fixed-length data */
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if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) {
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/*
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* Get extra info for ACPI Device/Processor objects only:
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* Run the _STA, _ADR and, sx_w, and _sx_d methods.
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*
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* Notes: none of these methods are required, so they may or may
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* not be present for this device. The Info->Valid bitfield is used
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* to indicate which methods were found and run successfully.
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*
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* For _STA, if the method does not exist, then (as per the ACPI
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* specification), the returned current_status flags will indicate
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* that the device is present/functional/enabled. Otherwise, the
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* current_status flags reflect the value returned from _STA.
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*/
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/* Execute the Device._STA method */
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status = acpi_ut_execute_STA(node, &info->current_status);
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if (ACPI_SUCCESS(status)) {
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valid |= ACPI_VALID_STA;
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}
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/* Execute the Device._ADR method */
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status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, node,
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&info->address);
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if (ACPI_SUCCESS(status)) {
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valid |= ACPI_VALID_ADR;
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}
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/* Execute the Device._sx_w methods */
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status = acpi_ut_execute_power_methods(node,
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acpi_gbl_lowest_dstate_names,
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ACPI_NUM_sx_w_METHODS,
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info->lowest_dstates);
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if (ACPI_SUCCESS(status)) {
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valid |= ACPI_VALID_SXWS;
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}
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/* Execute the Device._sx_d methods */
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status = acpi_ut_execute_power_methods(node,
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acpi_gbl_highest_dstate_names,
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ACPI_NUM_sx_d_METHODS,
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info->highest_dstates);
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if (ACPI_SUCCESS(status)) {
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valid |= ACPI_VALID_SXDS;
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}
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}
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/*
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* Create a pointer to the string area of the return buffer.
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* Point to the end of the base struct acpi_device_info structure.
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*/
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next_id_string = ACPI_CAST_PTR(char, info->compatible_id_list.ids);
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if (cid_list) {
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/* Point past the CID PNP_DEVICE_ID array */
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next_id_string +=
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((acpi_size)cid_list->count *
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sizeof(struct acpi_pnp_device_id));
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}
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/*
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* Copy the HID, UID, and CIDs to the return buffer. The variable-length
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* strings are copied to the reserved area at the end of the buffer.
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*
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* For HID and CID, check if the ID is a PCI Root Bridge.
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*/
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if (hid) {
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next_id_string = acpi_ns_copy_device_id(&info->hardware_id,
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hid, next_id_string);
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if (acpi_ut_is_pci_root_bridge(hid->string)) {
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info->flags |= ACPI_PCI_ROOT_BRIDGE;
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}
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}
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if (uid) {
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next_id_string = acpi_ns_copy_device_id(&info->unique_id,
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uid, next_id_string);
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}
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if (cid_list) {
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info->compatible_id_list.count = cid_list->count;
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info->compatible_id_list.list_size = cid_list->list_size;
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/* Copy each CID */
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for (i = 0; i < cid_list->count; i++) {
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next_id_string =
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acpi_ns_copy_device_id(&info->compatible_id_list.
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ids[i], &cid_list->ids[i],
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next_id_string);
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if (acpi_ut_is_pci_root_bridge(cid_list->ids[i].string)) {
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info->flags |= ACPI_PCI_ROOT_BRIDGE;
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}
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}
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}
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if (cls) {
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next_id_string = acpi_ns_copy_device_id(&info->class_code,
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cls, next_id_string);
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}
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/* Copy the fixed-length data */
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info->info_size = info_size;
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info->type = type;
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info->name = name;
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info->param_count = param_count;
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info->valid = valid;
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*return_buffer = info;
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status = AE_OK;
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cleanup:
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if (hid) {
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ACPI_FREE(hid);
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}
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if (uid) {
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ACPI_FREE(uid);
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}
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if (cid_list) {
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ACPI_FREE(cid_list);
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}
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if (cls) {
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ACPI_FREE(cls);
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}
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return (status);
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}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_object_info)
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_install_method
|
|
*
|
|
* PARAMETERS: buffer - An ACPI table containing one control method
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install a control method into the namespace. If the method
|
|
* name already exists in the namespace, it is overwritten. The
|
|
* input buffer must contain a valid DSDT or SSDT containing a
|
|
* single control method.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_install_method(u8 *buffer)
|
|
{
|
|
struct acpi_table_header *table =
|
|
ACPI_CAST_PTR(struct acpi_table_header, buffer);
|
|
u8 *aml_buffer;
|
|
u8 *aml_start;
|
|
char *path;
|
|
struct acpi_namespace_node *node;
|
|
union acpi_operand_object *method_obj;
|
|
struct acpi_parse_state parser_state;
|
|
u32 aml_length;
|
|
u16 opcode;
|
|
u8 method_flags;
|
|
acpi_status status;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!buffer) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Table must be a DSDT or SSDT */
|
|
|
|
if (!ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) &&
|
|
!ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) {
|
|
return (AE_BAD_HEADER);
|
|
}
|
|
|
|
/* First AML opcode in the table must be a control method */
|
|
|
|
parser_state.aml = buffer + sizeof(struct acpi_table_header);
|
|
opcode = acpi_ps_peek_opcode(&parser_state);
|
|
if (opcode != AML_METHOD_OP) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Extract method information from the raw AML */
|
|
|
|
parser_state.aml += acpi_ps_get_opcode_size(opcode);
|
|
parser_state.pkg_end = acpi_ps_get_next_package_end(&parser_state);
|
|
path = acpi_ps_get_next_namestring(&parser_state);
|
|
|
|
method_flags = *parser_state.aml++;
|
|
aml_start = parser_state.aml;
|
|
aml_length = ACPI_PTR_DIFF(parser_state.pkg_end, aml_start);
|
|
|
|
/*
|
|
* Allocate resources up-front. We don't want to have to delete a new
|
|
* node from the namespace if we cannot allocate memory.
|
|
*/
|
|
aml_buffer = ACPI_ALLOCATE(aml_length);
|
|
if (!aml_buffer) {
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
|
|
if (!method_obj) {
|
|
ACPI_FREE(aml_buffer);
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Lock namespace for acpi_ns_lookup, we may be creating a new node */
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto error_exit;
|
|
}
|
|
|
|
/* The lookup either returns an existing node or creates a new one */
|
|
|
|
status =
|
|
acpi_ns_lookup(NULL, path, ACPI_TYPE_METHOD, ACPI_IMODE_LOAD_PASS1,
|
|
ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND,
|
|
NULL, &node);
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
|
|
|
if (ACPI_FAILURE(status)) { /* ns_lookup */
|
|
if (status != AE_ALREADY_EXISTS) {
|
|
goto error_exit;
|
|
}
|
|
|
|
/* Node existed previously, make sure it is a method node */
|
|
|
|
if (node->type != ACPI_TYPE_METHOD) {
|
|
status = AE_TYPE;
|
|
goto error_exit;
|
|
}
|
|
}
|
|
|
|
/* Copy the method AML to the local buffer */
|
|
|
|
memcpy(aml_buffer, aml_start, aml_length);
|
|
|
|
/* Initialize the method object with the new method's information */
|
|
|
|
method_obj->method.aml_start = aml_buffer;
|
|
method_obj->method.aml_length = aml_length;
|
|
|
|
method_obj->method.param_count = (u8)
|
|
(method_flags & AML_METHOD_ARG_COUNT);
|
|
|
|
if (method_flags & AML_METHOD_SERIALIZED) {
|
|
method_obj->method.info_flags = ACPI_METHOD_SERIALIZED;
|
|
|
|
method_obj->method.sync_level = (u8)
|
|
((method_flags & AML_METHOD_SYNC_LEVEL) >> 4);
|
|
}
|
|
|
|
/*
|
|
* Now that it is complete, we can attach the new method object to
|
|
* the method Node (detaches/deletes any existing object)
|
|
*/
|
|
status = acpi_ns_attach_object(node, method_obj, ACPI_TYPE_METHOD);
|
|
|
|
/*
|
|
* Flag indicates AML buffer is dynamic, must be deleted later.
|
|
* Must be set only after attach above.
|
|
*/
|
|
node->flags |= ANOBJ_ALLOCATED_BUFFER;
|
|
|
|
/* Remove local reference to the method object */
|
|
|
|
acpi_ut_remove_reference(method_obj);
|
|
return (status);
|
|
|
|
error_exit:
|
|
|
|
ACPI_FREE(aml_buffer);
|
|
ACPI_FREE(method_obj);
|
|
return (status);
|
|
}
|
|
ACPI_EXPORT_SYMBOL(acpi_install_method)
|