patch-2.4.22 linux-2.4.22/drivers/acpi/tables/tbgetall.c

• Lines: 315
• Date: 2003-08-25 04:44:41.000000000 -0700
• Orig file: linux-2.4.21/drivers/acpi/tables/tbgetall.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/drivers/acpi/tables/tbgetall.c linux-2.4.22/drivers/acpi/tables/tbgetall.c
@@ -0,0 +1,314 @@
+/******************************************************************************
+ *
+ * Module Name: tbgetall - Get all required ACPI tables
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2003, 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_HIDWORD (address.pointer.value),
+				ACPI_LODWORD (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);
+}
+
+