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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/acpi/tables/tbgetall.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/acpi/tables/tbgetall.c')
-rw-r--r--drivers/acpi/tables/tbgetall.c313
1 files changed, 313 insertions, 0 deletions
diff --git a/drivers/acpi/tables/tbgetall.c b/drivers/acpi/tables/tbgetall.c
new file mode 100644
index 00000000000..adc4270988b
--- /dev/null
+++ b/drivers/acpi/tables/tbgetall.c
@@ -0,0 +1,313 @@
+/******************************************************************************
+ *
+ * Module Name: tbgetall - Get all required ACPI tables
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, 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")
+
+
+/*******************************************************************************
+ *
+ * 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
+ *
+ ******************************************************************************/
+
+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
+ *
+ ******************************************************************************/
+
+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_STRNCMP (header.signature, signature, ACPI_NAME_SIZE)) {
+ ACPI_REPORT_ERROR (("Incorrect table signature - wanted [%s] found [%4.4s]\n",
+ 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_REPORT_WARNING (("%s, while getting table at %8.8X%8.8X\n",
+ acpi_format_exception (status),
+ ACPI_FORMAT_UINT64 (address.pointer.value)));
+ }
+ }
+
+ /* We must have a FADT to continue */
+
+ if (!acpi_gbl_FADT) {
+ ACPI_REPORT_ERROR (("No FADT present in RSDT/XSDT\n"));
+ 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_REPORT_ERROR (("Could not convert FADT to internal common format\n"));
+ 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_REPORT_ERROR (("Could not get/install the FACS, %s\n",
+ acpi_format_exception (status)));
+ 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_REPORT_ERROR (("Could not get/install the DSDT\n"));
+ 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 ((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_RSDP);
+ return_ACPI_STATUS (status);
+}
+
+