![David E. Box](/assets/img/avatar_default.png)
ACPICA commit 8990e73ab2aa15d6a0068b860ab54feff25bee36 Link: https://github.com/acpica/acpica/commit/8990e73a Signed-off-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
482 lines
14 KiB
C
482 lines
14 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: tbxface - ACPI table-oriented external interfaces
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2015, Intel Corp.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#define EXPORT_ACPI_INTERFACES
|
|
|
|
#include <acpi/acpi.h>
|
|
#include "accommon.h"
|
|
#include "actables.h"
|
|
|
|
#define _COMPONENT ACPI_TABLES
|
|
ACPI_MODULE_NAME("tbxface")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_allocate_root_table
|
|
*
|
|
* PARAMETERS: initial_table_count - Size of initial_table_array, in number of
|
|
* struct acpi_table_desc structures
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Allocate a root table array. Used by iASL compiler and
|
|
* acpi_initialize_tables.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_allocate_root_table(u32 initial_table_count)
|
|
{
|
|
|
|
acpi_gbl_root_table_list.max_table_count = initial_table_count;
|
|
acpi_gbl_root_table_list.flags = ACPI_ROOT_ALLOW_RESIZE;
|
|
|
|
return (acpi_tb_resize_root_table_list());
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_initialize_tables
|
|
*
|
|
* PARAMETERS: initial_table_array - Pointer to an array of pre-allocated
|
|
* struct acpi_table_desc structures. If NULL, the
|
|
* array is dynamically allocated.
|
|
* initial_table_count - Size of initial_table_array, in number of
|
|
* struct acpi_table_desc structures
|
|
* allow_resize - Flag to tell Table Manager if resize of
|
|
* pre-allocated array is allowed. Ignored
|
|
* if initial_table_array is NULL.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT.
|
|
*
|
|
* NOTE: Allows static allocation of the initial table array in order
|
|
* to avoid the use of dynamic memory in confined environments
|
|
* such as the kernel boot sequence where it may not be available.
|
|
*
|
|
* If the host OS memory managers are initialized, use NULL for
|
|
* initial_table_array, and the table will be dynamically allocated.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status __init
|
|
acpi_initialize_tables(struct acpi_table_desc * initial_table_array,
|
|
u32 initial_table_count, u8 allow_resize)
|
|
{
|
|
acpi_physical_address rsdp_address;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_initialize_tables);
|
|
|
|
/*
|
|
* Setup the Root Table Array and allocate the table array
|
|
* if requested
|
|
*/
|
|
if (!initial_table_array) {
|
|
status = acpi_allocate_root_table(initial_table_count);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
} else {
|
|
/* Root Table Array has been statically allocated by the host */
|
|
|
|
ACPI_MEMSET(initial_table_array, 0,
|
|
(acpi_size) initial_table_count *
|
|
sizeof(struct acpi_table_desc));
|
|
|
|
acpi_gbl_root_table_list.tables = initial_table_array;
|
|
acpi_gbl_root_table_list.max_table_count = initial_table_count;
|
|
acpi_gbl_root_table_list.flags = ACPI_ROOT_ORIGIN_UNKNOWN;
|
|
if (allow_resize) {
|
|
acpi_gbl_root_table_list.flags |=
|
|
ACPI_ROOT_ALLOW_RESIZE;
|
|
}
|
|
}
|
|
|
|
/* Get the address of the RSDP */
|
|
|
|
rsdp_address = acpi_os_get_root_pointer();
|
|
if (!rsdp_address) {
|
|
return_ACPI_STATUS(AE_NOT_FOUND);
|
|
}
|
|
|
|
/*
|
|
* Get the root table (RSDT or XSDT) and extract all entries to the local
|
|
* Root Table Array. This array contains the information of the RSDT/XSDT
|
|
* in a common, more useable format.
|
|
*/
|
|
status = acpi_tb_parse_root_table(rsdp_address);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_tables)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_reallocate_root_table
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Reallocate Root Table List into dynamic memory. Copies the
|
|
* root list from the previously provided scratch area. Should
|
|
* be called once dynamic memory allocation is available in the
|
|
* kernel.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status __init acpi_reallocate_root_table(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
|
|
|
|
/*
|
|
* Only reallocate the root table if the host provided a static buffer
|
|
* for the table array in the call to acpi_initialize_tables.
|
|
*/
|
|
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
|
|
return_ACPI_STATUS(AE_SUPPORT);
|
|
}
|
|
|
|
acpi_gbl_root_table_list.flags |= ACPI_ROOT_ALLOW_RESIZE;
|
|
|
|
status = acpi_tb_resize_root_table_list();
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL_INIT(acpi_reallocate_root_table)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_table_header
|
|
*
|
|
* PARAMETERS: signature - ACPI signature of needed table
|
|
* instance - Which instance (for SSDTs)
|
|
* out_table_header - The pointer to the table header to fill
|
|
*
|
|
* RETURN: Status and pointer to mapped table header
|
|
*
|
|
* DESCRIPTION: Finds an ACPI table header.
|
|
*
|
|
* NOTE: Caller is responsible in unmapping the header with
|
|
* acpi_os_unmap_memory
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_get_table_header(char *signature,
|
|
u32 instance, struct acpi_table_header *out_table_header)
|
|
{
|
|
u32 i;
|
|
u32 j;
|
|
struct acpi_table_header *header;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!signature || !out_table_header) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Walk the root table list */
|
|
|
|
for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
|
|
i++) {
|
|
if (!ACPI_COMPARE_NAME
|
|
(&(acpi_gbl_root_table_list.tables[i].signature),
|
|
signature)) {
|
|
continue;
|
|
}
|
|
|
|
if (++j < instance) {
|
|
continue;
|
|
}
|
|
|
|
if (!acpi_gbl_root_table_list.tables[i].pointer) {
|
|
if ((acpi_gbl_root_table_list.tables[i].flags &
|
|
ACPI_TABLE_ORIGIN_MASK) ==
|
|
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL) {
|
|
header =
|
|
acpi_os_map_memory(acpi_gbl_root_table_list.
|
|
tables[i].address,
|
|
sizeof(struct
|
|
acpi_table_header));
|
|
if (!header) {
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
ACPI_MEMCPY(out_table_header, header,
|
|
sizeof(struct acpi_table_header));
|
|
acpi_os_unmap_memory(header,
|
|
sizeof(struct
|
|
acpi_table_header));
|
|
} else {
|
|
return (AE_NOT_FOUND);
|
|
}
|
|
} else {
|
|
ACPI_MEMCPY(out_table_header,
|
|
acpi_gbl_root_table_list.tables[i].pointer,
|
|
sizeof(struct acpi_table_header));
|
|
}
|
|
return (AE_OK);
|
|
}
|
|
|
|
return (AE_NOT_FOUND);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_table_header)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_table_with_size
|
|
*
|
|
* PARAMETERS: signature - ACPI signature of needed table
|
|
* instance - Which instance (for SSDTs)
|
|
* out_table - Where the pointer to the table is returned
|
|
*
|
|
* RETURN: Status and pointer to the requested table
|
|
*
|
|
* DESCRIPTION: Finds and verifies an ACPI table. Table must be in the
|
|
* RSDT/XSDT.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_get_table_with_size(char *signature,
|
|
u32 instance, struct acpi_table_header **out_table,
|
|
acpi_size *tbl_size)
|
|
{
|
|
u32 i;
|
|
u32 j;
|
|
acpi_status status;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!signature || !out_table) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Walk the root table list */
|
|
|
|
for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
|
|
i++) {
|
|
if (!ACPI_COMPARE_NAME
|
|
(&(acpi_gbl_root_table_list.tables[i].signature),
|
|
signature)) {
|
|
continue;
|
|
}
|
|
|
|
if (++j < instance) {
|
|
continue;
|
|
}
|
|
|
|
status =
|
|
acpi_tb_validate_table(&acpi_gbl_root_table_list.tables[i]);
|
|
if (ACPI_SUCCESS(status)) {
|
|
*out_table = acpi_gbl_root_table_list.tables[i].pointer;
|
|
*tbl_size = acpi_gbl_root_table_list.tables[i].length;
|
|
}
|
|
|
|
if (!acpi_gbl_permanent_mmap) {
|
|
acpi_gbl_root_table_list.tables[i].pointer = NULL;
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
|
|
return (AE_NOT_FOUND);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_table_with_size)
|
|
|
|
acpi_status
|
|
acpi_get_table(char *signature,
|
|
u32 instance, struct acpi_table_header **out_table)
|
|
{
|
|
acpi_size tbl_size;
|
|
|
|
return acpi_get_table_with_size(signature,
|
|
instance, out_table, &tbl_size);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_table)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_table_by_index
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
* table - Where the pointer to the table is returned
|
|
*
|
|
* RETURN: Status and pointer to the requested table
|
|
*
|
|
* DESCRIPTION: Obtain a table by an index into the global table list. Used
|
|
* internally also.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_get_table_by_index(u32 table_index, struct acpi_table_header ** table)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_get_table_by_index);
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!table) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
|
|
/* Validate index */
|
|
|
|
if (table_index >= acpi_gbl_root_table_list.current_table_count) {
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (!acpi_gbl_root_table_list.tables[table_index].pointer) {
|
|
|
|
/* Table is not mapped, map it */
|
|
|
|
status =
|
|
acpi_tb_validate_table(&acpi_gbl_root_table_list.
|
|
tables[table_index]);
|
|
if (ACPI_FAILURE(status)) {
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
*table = acpi_gbl_root_table_list.tables[table_index].pointer;
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_install_table_handler
|
|
*
|
|
* PARAMETERS: handler - Table event handler
|
|
* context - Value passed to the handler on each event
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install a global table event handler.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_install_table_handler(acpi_table_handler handler, void *context)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_install_table_handler);
|
|
|
|
if (!handler) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Don't allow more than one handler */
|
|
|
|
if (acpi_gbl_table_handler) {
|
|
status = AE_ALREADY_EXISTS;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Install the handler */
|
|
|
|
acpi_gbl_table_handler = handler;
|
|
acpi_gbl_table_handler_context = context;
|
|
|
|
cleanup:
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_install_table_handler)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_remove_table_handler
|
|
*
|
|
* PARAMETERS: handler - Table event handler that was installed
|
|
* previously.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove a table event handler
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_remove_table_handler(acpi_table_handler handler)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_remove_table_handler);
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Make sure that the installed handler is the same */
|
|
|
|
if (!handler || handler != acpi_gbl_table_handler) {
|
|
status = AE_BAD_PARAMETER;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Remove the handler */
|
|
|
|
acpi_gbl_table_handler = NULL;
|
|
|
|
cleanup:
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_remove_table_handler)
|