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2368b1a17c
ACPICA commit c160cae765412f5736cf88a9ebcc6138aa761a48 Linux uses asmlinkage and sparse macros to mark function symbols. This leads to the divergences between the Linux and the ACPICA. This patch ports such declarators back to ACPICA. Lv Zheng. Link: https://github.com/acpica/acpica/commit/c160cae7 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>
483 lines
14 KiB
C
483 lines
14 KiB
C
/******************************************************************************
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*
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* Module Name: tbxface - ACPI table-oriented external 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 "actables.h"
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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME("tbxface")
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/*******************************************************************************
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*
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* FUNCTION: acpi_allocate_root_table
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*
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* PARAMETERS: initial_table_count - Size of initial_table_array, in number of
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* struct acpi_table_desc structures
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*
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* RETURN: Status
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*
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* DESCRIPTION: Allocate a root table array. Used by iASL compiler and
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* acpi_initialize_tables.
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*
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******************************************************************************/
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acpi_status acpi_allocate_root_table(u32 initial_table_count)
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{
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acpi_gbl_root_table_list.max_table_count = initial_table_count;
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acpi_gbl_root_table_list.flags = ACPI_ROOT_ALLOW_RESIZE;
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return (acpi_tb_resize_root_table_list());
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_initialize_tables
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*
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* PARAMETERS: initial_table_array - Pointer to an array of pre-allocated
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* struct acpi_table_desc structures. If NULL, the
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* array is dynamically allocated.
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* initial_table_count - Size of initial_table_array, in number of
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* struct acpi_table_desc structures
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* allow_resize - Flag to tell Table Manager if resize of
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* pre-allocated array is allowed. Ignored
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* if initial_table_array is NULL.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT.
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*
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* NOTE: Allows static allocation of the initial table array in order
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* to avoid the use of dynamic memory in confined environments
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* such as the kernel boot sequence where it may not be available.
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*
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* If the host OS memory managers are initialized, use NULL for
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* initial_table_array, and the table will be dynamically allocated.
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*
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******************************************************************************/
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acpi_status ACPI_INIT_FUNCTION
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acpi_initialize_tables(struct acpi_table_desc *initial_table_array,
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u32 initial_table_count, u8 allow_resize)
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{
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acpi_physical_address rsdp_address;
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_initialize_tables);
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/*
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* Setup the Root Table Array and allocate the table array
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* if requested
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*/
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if (!initial_table_array) {
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status = acpi_allocate_root_table(initial_table_count);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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} else {
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/* Root Table Array has been statically allocated by the host */
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memset(initial_table_array, 0,
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(acpi_size)initial_table_count *
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sizeof(struct acpi_table_desc));
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acpi_gbl_root_table_list.tables = initial_table_array;
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acpi_gbl_root_table_list.max_table_count = initial_table_count;
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acpi_gbl_root_table_list.flags = ACPI_ROOT_ORIGIN_UNKNOWN;
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if (allow_resize) {
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acpi_gbl_root_table_list.flags |=
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ACPI_ROOT_ALLOW_RESIZE;
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}
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}
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/* Get the address of the RSDP */
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rsdp_address = acpi_os_get_root_pointer();
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if (!rsdp_address) {
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return_ACPI_STATUS(AE_NOT_FOUND);
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}
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/*
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* Get the root table (RSDT or XSDT) and extract all entries to the local
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* Root Table Array. This array contains the information of the RSDT/XSDT
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* in a common, more useable format.
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*/
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status = acpi_tb_parse_root_table(rsdp_address);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_tables)
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/*******************************************************************************
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*
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* FUNCTION: acpi_reallocate_root_table
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Reallocate Root Table List into dynamic memory. Copies the
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* root list from the previously provided scratch area. Should
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* be called once dynamic memory allocation is available in the
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* kernel.
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*
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******************************************************************************/
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acpi_status ACPI_INIT_FUNCTION acpi_reallocate_root_table(void)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
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/*
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* Only reallocate the root table if the host provided a static buffer
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* for the table array in the call to acpi_initialize_tables.
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*/
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if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
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return_ACPI_STATUS(AE_SUPPORT);
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}
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acpi_gbl_root_table_list.flags |= ACPI_ROOT_ALLOW_RESIZE;
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status = acpi_tb_resize_root_table_list();
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL_INIT(acpi_reallocate_root_table)
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_table_header
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*
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* PARAMETERS: signature - ACPI signature of needed table
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* instance - Which instance (for SSDTs)
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* out_table_header - The pointer to the table header to fill
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*
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* RETURN: Status and pointer to mapped table header
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*
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* DESCRIPTION: Finds an ACPI table header.
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*
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* NOTE: Caller is responsible in unmapping the header with
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* acpi_os_unmap_memory
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*
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******************************************************************************/
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acpi_status
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acpi_get_table_header(char *signature,
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u32 instance, struct acpi_table_header *out_table_header)
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{
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u32 i;
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u32 j;
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struct acpi_table_header *header;
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/* Parameter validation */
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if (!signature || !out_table_header) {
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return (AE_BAD_PARAMETER);
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}
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/* Walk the root table list */
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for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
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i++) {
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if (!ACPI_COMPARE_NAME
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(&(acpi_gbl_root_table_list.tables[i].signature),
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signature)) {
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continue;
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}
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if (++j < instance) {
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continue;
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}
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if (!acpi_gbl_root_table_list.tables[i].pointer) {
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if ((acpi_gbl_root_table_list.tables[i].flags &
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ACPI_TABLE_ORIGIN_MASK) ==
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ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL) {
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header =
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acpi_os_map_memory(acpi_gbl_root_table_list.
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tables[i].address,
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sizeof(struct
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acpi_table_header));
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if (!header) {
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return (AE_NO_MEMORY);
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}
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memcpy(out_table_header, header,
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sizeof(struct acpi_table_header));
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acpi_os_unmap_memory(header,
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sizeof(struct
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acpi_table_header));
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} else {
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return (AE_NOT_FOUND);
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}
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} else {
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memcpy(out_table_header,
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acpi_gbl_root_table_list.tables[i].pointer,
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sizeof(struct acpi_table_header));
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}
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return (AE_OK);
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}
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return (AE_NOT_FOUND);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_table_header)
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_table_with_size
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*
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* PARAMETERS: signature - ACPI signature of needed table
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* instance - Which instance (for SSDTs)
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* out_table - Where the pointer to the table is returned
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*
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* RETURN: Status and pointer to the requested table
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*
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* DESCRIPTION: Finds and verifies an ACPI table. Table must be in the
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* RSDT/XSDT.
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*
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******************************************************************************/
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acpi_status
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acpi_get_table_with_size(char *signature,
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u32 instance, struct acpi_table_header **out_table,
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acpi_size *tbl_size)
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{
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u32 i;
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u32 j;
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acpi_status status;
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/* Parameter validation */
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if (!signature || !out_table) {
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return (AE_BAD_PARAMETER);
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}
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/* Walk the root table list */
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for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
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i++) {
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if (!ACPI_COMPARE_NAME
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(&(acpi_gbl_root_table_list.tables[i].signature),
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signature)) {
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continue;
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}
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if (++j < instance) {
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continue;
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}
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status =
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acpi_tb_validate_table(&acpi_gbl_root_table_list.tables[i]);
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if (ACPI_SUCCESS(status)) {
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*out_table = acpi_gbl_root_table_list.tables[i].pointer;
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*tbl_size = acpi_gbl_root_table_list.tables[i].length;
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}
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if (!acpi_gbl_permanent_mmap) {
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acpi_gbl_root_table_list.tables[i].pointer = NULL;
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}
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return (status);
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}
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return (AE_NOT_FOUND);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_table_with_size)
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acpi_status
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acpi_get_table(char *signature,
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u32 instance, struct acpi_table_header **out_table)
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{
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acpi_size tbl_size;
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return acpi_get_table_with_size(signature,
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instance, out_table, &tbl_size);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_table)
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_table_by_index
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*
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* PARAMETERS: table_index - Table index
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* table - Where the pointer to the table is returned
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*
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* RETURN: Status and pointer to the requested table
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*
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* DESCRIPTION: Obtain a table by an index into the global table list. Used
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* internally also.
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*
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******************************************************************************/
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acpi_status
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acpi_get_table_by_index(u32 table_index, struct acpi_table_header **table)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_get_table_by_index);
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/* Parameter validation */
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if (!table) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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/* Validate index */
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if (table_index >= acpi_gbl_root_table_list.current_table_count) {
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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if (!acpi_gbl_root_table_list.tables[table_index].pointer) {
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/* Table is not mapped, map it */
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status =
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acpi_tb_validate_table(&acpi_gbl_root_table_list.
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tables[table_index]);
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if (ACPI_FAILURE(status)) {
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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return_ACPI_STATUS(status);
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}
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}
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*table = acpi_gbl_root_table_list.tables[table_index].pointer;
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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return_ACPI_STATUS(AE_OK);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)
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/*******************************************************************************
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*
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* FUNCTION: acpi_install_table_handler
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*
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* PARAMETERS: handler - Table event handler
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* context - Value passed to the handler on each event
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install a global table event handler.
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*
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******************************************************************************/
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acpi_status
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acpi_install_table_handler(acpi_table_handler handler, void *context)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_install_table_handler);
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if (!handler) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Don't allow more than one handler */
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if (acpi_gbl_table_handler) {
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status = AE_ALREADY_EXISTS;
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goto cleanup;
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}
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/* Install the handler */
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acpi_gbl_table_handler = handler;
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acpi_gbl_table_handler_context = context;
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cleanup:
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(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_install_table_handler)
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/*******************************************************************************
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*
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* FUNCTION: acpi_remove_table_handler
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*
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* PARAMETERS: handler - Table event handler that was installed
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* previously.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Remove a table event handler
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*
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******************************************************************************/
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acpi_status acpi_remove_table_handler(acpi_table_handler handler)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_remove_table_handler);
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status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Make sure that the installed handler is the same */
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if (!handler || handler != acpi_gbl_table_handler) {
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status = AE_BAD_PARAMETER;
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goto cleanup;
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}
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/* Remove the handler */
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acpi_gbl_table_handler = NULL;
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cleanup:
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(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_remove_table_handler)
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