/******************************************************************************
*
* Module Name: tbgetall - Get all required ACPI tables
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <acpi/acpi.h>
#include <acpi/actables.h>
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbgetall")
/* Local prototypes */
static acpi_status
acpi_tb_get_primary_table(struct acpi_pointer *address,
struct acpi_table_desc *table_info);
static acpi_status
acpi_tb_get_secondary_table(struct acpi_pointer *address,
acpi_string signature,
struct acpi_table_desc *table_info);
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_primary_table
*
* PARAMETERS: Address - Physical address of table to retrieve
* *table_info - Where the table info is returned
*
* RETURN: Status
*
* DESCRIPTION: Maps the physical address of table into a logical address
*
******************************************************************************/
static acpi_status
acpi_tb_get_primary_table(struct acpi_pointer *address,
struct acpi_table_desc *table_info)
{
acpi_status status;
struct acpi_table_header header;
ACPI_FUNCTION_TRACE(tb_get_primary_table);
/* Ignore a NULL address in the RSDT */
if (!address->pointer.value) {
return_ACPI_STATUS(AE_OK);
}
/* Get the header in order to get signature and table size */
status = acpi_tb_get_table_header(address, &header);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Clear the table_info */
ACPI_MEMSET(table_info, 0, sizeof(struct acpi_table_desc));
/*
* Check the table signature and make sure it is recognized.
* Also checks the header checksum
*/
table_info->pointer = &header;
status = acpi_tb_recognize_table(table_info, ACPI_TABLE_PRIMARY);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the entire table */
status = acpi_tb_get_table_body(address, &header, table_info);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Install the table */
status = acpi_tb_install_table(table_info);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_secondary_table
*
* PARAMETERS: Address - Physical address of table to retrieve
* *table_info - Where the table info is returned
*
* RETURN: Status
*
* DESCRIPTION: Maps the physical address of table into a logical address
*
******************************************************************************/
static acpi_status
acpi_tb_get_secondary_table(struct acpi_pointer *address,
acpi_string signature,
struct acpi_table_desc *table_info)
{
acpi_status status;
struct acpi_table_header header;
ACPI_FUNCTION_TRACE_STR(tb_get_secondary_table, signature);
/* Get the header in order to match the signature */
status = acpi_tb_get_table_header(address, &header);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Signature must match request */
if (!ACPI_COMPARE_NAME(header.signature, signature)) {
ACPI_ERROR((AE_INFO,
"Incorrect table signature - wanted [%s] found [%4.4s]",
signature, header.signature));
return_ACPI_STATUS(AE_BAD_SIGNATURE);
}
/*
* Check the table signature and make sure it is recognized.
* Also checks the header checksum
*/
table_info->pointer = &header;
status = acpi_tb_recognize_table(table_info, ACPI_TABLE_SECONDARY);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the entire table */
status = acpi_tb_get_table_body(address, &header, table_info);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Install the table */
status = acpi_tb_install_table(table_info);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_required_tables
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load and validate tables other than the RSDT. The RSDT must
* already be loaded and validated.
*
* Get the minimum set of ACPI tables, namely:
*
* 1) FADT (via RSDT in loop below)
* 2) FACS (via FADT)
* 3) DSDT (via FADT)
*
******************************************************************************/
acpi_status acpi_tb_get_required_tables(void)
{
acpi_status status = AE_OK;
u32 i;
struct acpi_table_desc table_info;
struct acpi_pointer address;
ACPI_FUNCTION_TRACE(tb_get_required_tables);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%d ACPI tables in RSDT\n",
acpi_gbl_rsdt_table_count));
address.pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING;
/*
* Loop through all table pointers found in RSDT.
* This will NOT include the FACS and DSDT - we must get
* them after the loop.
*
* The only tables we are interested in getting here is the FADT and
* any SSDTs.
*/
for (i = 0; i < acpi_gbl_rsdt_table_count; i++) {
/* Get the table address from the common internal XSDT */
address.pointer.value = acpi_gbl_XSDT->table_offset_entry[i];
/*
* Get the tables needed by this subsystem (FADT and any SSDTs).
* NOTE: All other tables are completely ignored at this time.
*/
status = acpi_tb_get_primary_table(&address, &table_info);
if ((status != AE_OK) && (status != AE_TABLE_NOT_SUPPORTED)) {
ACPI_WARNING((AE_INFO,
"%s, while getting table at %8.8X%8.8X",
acpi_format_exception(status),
ACPI_FORMAT_UINT64(address.pointer.
value)));
}
}
/* We must have a FADT to continue */
if (!acpi_gbl_FADT) {
ACPI_ERROR((AE_INFO, "No FADT present in RSDT/XSDT"));
return_ACPI_STATUS(AE_NO_ACPI_TABLES);
}
/*
* Convert the FADT to a common format. This allows earlier revisions of
* the table to coexist with newer versions, using common access code.
*/
status = acpi_tb_convert_table_fadt();
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not convert FADT to internal common format"));
return_ACPI_STATUS(status);
}
/* Get the FACS (Pointed to by the FADT) */
address.pointer.value = acpi_gbl_FADT->xfirmware_ctrl;
status = acpi_tb_get_secondary_table(&address, FACS_SIG, &table_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not get/install the FACS"));
return_ACPI_STATUS(status);
}
/*
* Create the common FACS pointer table
* (Contains pointers to the original table)
*/
status = acpi_tb_build_common_facs(&table_info);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get/install the DSDT (Pointed to by the FADT) */
address.pointer.value = acpi_gbl_FADT->Xdsdt;
status = acpi_tb_get_secondary_table(&address, DSDT_SIG, &table_info);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO, "Could not get/install the DSDT"));
return_ACPI_STATUS(status);
}
/* Set Integer Width (32/64) based upon DSDT revision */
acpi_ut_set_integer_width(acpi_gbl_DSDT->revision);
/* Dump the entire DSDT */
ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
"Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n",
acpi_gbl_DSDT->length, acpi_gbl_DSDT->length,
acpi_gbl_integer_bit_width));
ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_DSDT),
acpi_gbl_DSDT->length);
/* Always delete the RSDP mapping, we are done with it */
acpi_tb_delete_tables_by_type(ACPI_TABLE_ID_RSDP);
return_ACPI_STATUS(status);
}
