Linux-2.6.12-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!
diff --git a/drivers/acpi/tables/Makefile b/drivers/acpi/tables/Makefile
new file mode 100644
index 0000000..aa4c695
--- /dev/null
+++ b/drivers/acpi/tables/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for all Linux ACPI interpreter subdirectories
+#
+
+obj-y := tbconvrt.o tbget.o tbrsdt.o tbxface.o \
+ tbgetall.o tbinstal.o tbutils.o tbxfroot.o
+
+EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/tables/tbconvrt.c b/drivers/acpi/tables/tbconvrt.c
new file mode 100644
index 0000000..334327c
--- /dev/null
+++ b/drivers/acpi/tables/tbconvrt.c
@@ -0,0 +1,564 @@
+/******************************************************************************
+ *
+ * Module Name: tbconvrt - ACPI Table conversion utilities
+ *
+ *****************************************************************************/
+
+/*
+ * 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 <linux/module.h>
+
+#include <acpi/acpi.h>
+#include <acpi/actables.h>
+
+
+#define _COMPONENT ACPI_TABLES
+ ACPI_MODULE_NAME ("tbconvrt")
+
+
+u8 acpi_fadt_is_v1;
+EXPORT_SYMBOL(acpi_fadt_is_v1);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_table_count
+ *
+ * PARAMETERS: RSDP - Pointer to the RSDP
+ * RSDT - Pointer to the RSDT/XSDT
+ *
+ * RETURN: The number of tables pointed to by the RSDT or XSDT.
+ *
+ * DESCRIPTION: Calculate the number of tables. Automatically handles either
+ * an RSDT or XSDT.
+ *
+ ******************************************************************************/
+
+u32
+acpi_tb_get_table_count (
+ struct rsdp_descriptor *RSDP,
+ struct acpi_table_header *RSDT)
+{
+ u32 pointer_size;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ if (RSDP->revision < 2) {
+ pointer_size = sizeof (u32);
+ }
+ else {
+ pointer_size = sizeof (u64);
+ }
+
+ /*
+ * Determine the number of tables pointed to by the RSDT/XSDT.
+ * This is defined by the ACPI Specification to be the number of
+ * pointers contained within the RSDT/XSDT. The size of the pointers
+ * is architecture-dependent.
+ */
+ return ((RSDT->length - sizeof (struct acpi_table_header)) / pointer_size);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_convert_to_xsdt
+ *
+ * PARAMETERS: table_info - Info about the RSDT
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert an RSDT to an XSDT (internal common format)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_convert_to_xsdt (
+ struct acpi_table_desc *table_info)
+{
+ acpi_size table_size;
+ u32 i;
+ XSDT_DESCRIPTOR *new_table;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ /* Compute size of the converted XSDT */
+
+ table_size = ((acpi_size) acpi_gbl_rsdt_table_count * sizeof (u64)) +
+ sizeof (struct acpi_table_header);
+
+ /* Allocate an XSDT */
+
+ new_table = ACPI_MEM_CALLOCATE (table_size);
+ if (!new_table) {
+ return (AE_NO_MEMORY);
+ }
+
+ /* Copy the header and set the length */
+
+ ACPI_MEMCPY (new_table, table_info->pointer, sizeof (struct acpi_table_header));
+ new_table->length = (u32) table_size;
+
+ /* Copy the table pointers */
+
+ for (i = 0; i < acpi_gbl_rsdt_table_count; i++) {
+ if (acpi_gbl_RSDP->revision < 2) {
+ ACPI_STORE_ADDRESS (new_table->table_offset_entry[i],
+ (ACPI_CAST_PTR (struct rsdt_descriptor_rev1, table_info->pointer))->table_offset_entry[i]);
+ }
+ else {
+ new_table->table_offset_entry[i] =
+ (ACPI_CAST_PTR (XSDT_DESCRIPTOR, table_info->pointer))->table_offset_entry[i];
+ }
+ }
+
+ /* Delete the original table (either mapped or in a buffer) */
+
+ acpi_tb_delete_single_table (table_info);
+
+ /* Point the table descriptor to the new table */
+
+ table_info->pointer = ACPI_CAST_PTR (struct acpi_table_header, new_table);
+ table_info->length = table_size;
+ table_info->allocation = ACPI_MEM_ALLOCATED;
+
+ return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_tb_init_generic_address
+ *
+ * PARAMETERS: new_gas_struct - GAS struct to be initialized
+ * register_bit_width - Width of this register
+ * Address - Address of the register
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Initialize a GAS structure.
+ *
+ ******************************************************************************/
+
+static void
+acpi_tb_init_generic_address (
+ struct acpi_generic_address *new_gas_struct,
+ u8 register_bit_width,
+ acpi_physical_address address)
+{
+
+ ACPI_STORE_ADDRESS (new_gas_struct->address, address);
+
+ new_gas_struct->address_space_id = ACPI_ADR_SPACE_SYSTEM_IO;
+ new_gas_struct->register_bit_width = register_bit_width;
+ new_gas_struct->register_bit_offset = 0;
+ new_gas_struct->access_width = 0;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_convert_fadt1
+ *
+ * PARAMETERS: local_fadt - Pointer to new FADT
+ * original_fadt - Pointer to old FADT
+ *
+ * RETURN: Populates local_fadt
+ *
+ * DESCRIPTION: Convert an ACPI 1.0 FADT to common internal format
+ *
+ ******************************************************************************/
+
+static void
+acpi_tb_convert_fadt1 (
+ struct fadt_descriptor_rev2 *local_fadt,
+ struct fadt_descriptor_rev1 *original_fadt)
+{
+
+
+ /* ACPI 1.0 FACS */
+ /* The BIOS stored FADT should agree with Revision 1.0 */
+ acpi_fadt_is_v1 = 1;
+
+ /*
+ * Copy the table header and the common part of the tables.
+ *
+ * The 2.0 table is an extension of the 1.0 table, so the entire 1.0
+ * table can be copied first, then expand some fields to 64 bits.
+ */
+ ACPI_MEMCPY (local_fadt, original_fadt, sizeof (struct fadt_descriptor_rev1));
+
+ /* Convert table pointers to 64-bit fields */
+
+ ACPI_STORE_ADDRESS (local_fadt->xfirmware_ctrl, local_fadt->V1_firmware_ctrl);
+ ACPI_STORE_ADDRESS (local_fadt->Xdsdt, local_fadt->V1_dsdt);
+
+ /*
+ * System Interrupt Model isn't used in ACPI 2.0 (local_fadt->Reserved1 = 0;)
+ */
+
+ /*
+ * This field is set by the OEM to convey the preferred power management
+ * profile to OSPM. It doesn't have any 1.0 equivalence. Since we don't
+ * know what kind of 32-bit system this is, we will use "unspecified".
+ */
+ local_fadt->prefer_PM_profile = PM_UNSPECIFIED;
+
+ /*
+ * Processor Performance State Control. This is the value OSPM writes to
+ * the SMI_CMD register to assume processor performance state control
+ * responsibility. There isn't any equivalence in 1.0, but as many 1.x
+ * ACPI tables contain _PCT and _PSS we also keep this value, unless
+ * acpi_strict is set.
+ */
+ if (acpi_strict)
+ local_fadt->pstate_cnt = 0;
+
+ /*
+ * Support for the _CST object and C States change notification.
+ * This data item hasn't any 1.0 equivalence so leave it zero.
+ */
+ local_fadt->cst_cnt = 0;
+
+ /*
+ * FADT Rev 2 was an interim FADT released between ACPI 1.0 and ACPI 2.0.
+ * It primarily adds the FADT reset mechanism.
+ */
+ if ((original_fadt->revision == 2) &&
+ (original_fadt->length == sizeof (struct fadt_descriptor_rev2_minus))) {
+ /*
+ * Grab the entire generic address struct, plus the 1-byte reset value
+ * that immediately follows.
+ */
+ ACPI_MEMCPY (&local_fadt->reset_register,
+ &(ACPI_CAST_PTR (struct fadt_descriptor_rev2_minus, original_fadt))->reset_register,
+ sizeof (struct acpi_generic_address) + 1);
+ }
+ else {
+ /*
+ * Since there isn't any equivalence in 1.0 and since it is highly
+ * likely that a 1.0 system has legacy support.
+ */
+ local_fadt->iapc_boot_arch = BAF_LEGACY_DEVICES;
+ }
+
+ /*
+ * Convert the V1.0 block addresses to V2.0 GAS structures
+ */
+ acpi_tb_init_generic_address (&local_fadt->xpm1a_evt_blk, local_fadt->pm1_evt_len,
+ (acpi_physical_address) local_fadt->V1_pm1a_evt_blk);
+ acpi_tb_init_generic_address (&local_fadt->xpm1b_evt_blk, local_fadt->pm1_evt_len,
+ (acpi_physical_address) local_fadt->V1_pm1b_evt_blk);
+ acpi_tb_init_generic_address (&local_fadt->xpm1a_cnt_blk, local_fadt->pm1_cnt_len,
+ (acpi_physical_address) local_fadt->V1_pm1a_cnt_blk);
+ acpi_tb_init_generic_address (&local_fadt->xpm1b_cnt_blk, local_fadt->pm1_cnt_len,
+ (acpi_physical_address) local_fadt->V1_pm1b_cnt_blk);
+ acpi_tb_init_generic_address (&local_fadt->xpm2_cnt_blk, local_fadt->pm2_cnt_len,
+ (acpi_physical_address) local_fadt->V1_pm2_cnt_blk);
+ acpi_tb_init_generic_address (&local_fadt->xpm_tmr_blk, local_fadt->pm_tm_len,
+ (acpi_physical_address) local_fadt->V1_pm_tmr_blk);
+ acpi_tb_init_generic_address (&local_fadt->xgpe0_blk, 0,
+ (acpi_physical_address) local_fadt->V1_gpe0_blk);
+ acpi_tb_init_generic_address (&local_fadt->xgpe1_blk, 0,
+ (acpi_physical_address) local_fadt->V1_gpe1_blk);
+
+ /* Create separate GAS structs for the PM1 Enable registers */
+
+ acpi_tb_init_generic_address (&acpi_gbl_xpm1a_enable,
+ (u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
+ (acpi_physical_address) (local_fadt->xpm1a_evt_blk.address +
+ ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
+
+ /* PM1B is optional; leave null if not present */
+
+ if (local_fadt->xpm1b_evt_blk.address) {
+ acpi_tb_init_generic_address (&acpi_gbl_xpm1b_enable,
+ (u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
+ (acpi_physical_address) (local_fadt->xpm1b_evt_blk.address +
+ ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_convert_fadt2
+ *
+ * PARAMETERS: local_fadt - Pointer to new FADT
+ * original_fadt - Pointer to old FADT
+ *
+ * RETURN: Populates local_fadt
+ *
+ * DESCRIPTION: Convert an ACPI 2.0 FADT to common internal format.
+ * Handles optional "X" fields.
+ *
+ ******************************************************************************/
+
+static void
+acpi_tb_convert_fadt2 (
+ struct fadt_descriptor_rev2 *local_fadt,
+ struct fadt_descriptor_rev2 *original_fadt)
+{
+
+ /* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
+
+ ACPI_MEMCPY (local_fadt, original_fadt, sizeof (struct fadt_descriptor_rev2));
+
+ /*
+ * "X" fields are optional extensions to the original V1.0 fields, so
+ * we must selectively expand V1.0 fields if the corresponding X field
+ * is zero.
+ */
+ if (!(local_fadt->xfirmware_ctrl)) {
+ ACPI_STORE_ADDRESS (local_fadt->xfirmware_ctrl, local_fadt->V1_firmware_ctrl);
+ }
+
+ if (!(local_fadt->Xdsdt)) {
+ ACPI_STORE_ADDRESS (local_fadt->Xdsdt, local_fadt->V1_dsdt);
+ }
+
+ if (!(local_fadt->xpm1a_evt_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xpm1a_evt_blk,
+ local_fadt->pm1_evt_len, (acpi_physical_address) local_fadt->V1_pm1a_evt_blk);
+ }
+
+ if (!(local_fadt->xpm1b_evt_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xpm1b_evt_blk,
+ local_fadt->pm1_evt_len, (acpi_physical_address) local_fadt->V1_pm1b_evt_blk);
+ }
+
+ if (!(local_fadt->xpm1a_cnt_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xpm1a_cnt_blk,
+ local_fadt->pm1_cnt_len, (acpi_physical_address) local_fadt->V1_pm1a_cnt_blk);
+ }
+
+ if (!(local_fadt->xpm1b_cnt_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xpm1b_cnt_blk,
+ local_fadt->pm1_cnt_len, (acpi_physical_address) local_fadt->V1_pm1b_cnt_blk);
+ }
+
+ if (!(local_fadt->xpm2_cnt_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xpm2_cnt_blk,
+ local_fadt->pm2_cnt_len, (acpi_physical_address) local_fadt->V1_pm2_cnt_blk);
+ }
+
+ if (!(local_fadt->xpm_tmr_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xpm_tmr_blk,
+ local_fadt->pm_tm_len, (acpi_physical_address) local_fadt->V1_pm_tmr_blk);
+ }
+
+ if (!(local_fadt->xgpe0_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xgpe0_blk,
+ 0, (acpi_physical_address) local_fadt->V1_gpe0_blk);
+ }
+
+ if (!(local_fadt->xgpe1_blk.address)) {
+ acpi_tb_init_generic_address (&local_fadt->xgpe1_blk,
+ 0, (acpi_physical_address) local_fadt->V1_gpe1_blk);
+ }
+
+ /* Create separate GAS structs for the PM1 Enable registers */
+
+ acpi_tb_init_generic_address (&acpi_gbl_xpm1a_enable,
+ (u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
+ (acpi_physical_address) (local_fadt->xpm1a_evt_blk.address +
+ ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
+ acpi_gbl_xpm1a_enable.address_space_id = local_fadt->xpm1a_evt_blk.address_space_id;
+
+ /* PM1B is optional; leave null if not present */
+
+ if (local_fadt->xpm1b_evt_blk.address) {
+ acpi_tb_init_generic_address (&acpi_gbl_xpm1b_enable,
+ (u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
+ (acpi_physical_address) (local_fadt->xpm1b_evt_blk.address +
+ ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
+ acpi_gbl_xpm1b_enable.address_space_id = local_fadt->xpm1b_evt_blk.address_space_id;
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_convert_table_fadt
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Converts a BIOS supplied ACPI 1.0 FADT to a local
+ * ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply
+ * copied to the local FADT. The ACPI CA software uses this
+ * local FADT. Thus a significant amount of special #ifdef
+ * type codeing is saved.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_convert_table_fadt (void)
+{
+ struct fadt_descriptor_rev2 *local_fadt;
+ struct acpi_table_desc *table_desc;
+
+
+ ACPI_FUNCTION_TRACE ("tb_convert_table_fadt");
+
+
+ /*
+ * acpi_gbl_FADT is valid. Validate the FADT length. The table must be
+ * at least as long as the version 1.0 FADT
+ */
+ if (acpi_gbl_FADT->length < sizeof (struct fadt_descriptor_rev1)) {
+ ACPI_REPORT_ERROR (("FADT is invalid, too short: 0x%X\n", acpi_gbl_FADT->length));
+ return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
+ }
+
+ /* Allocate buffer for the ACPI 2.0(+) FADT */
+
+ local_fadt = ACPI_MEM_CALLOCATE (sizeof (struct fadt_descriptor_rev2));
+ if (!local_fadt) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ if (acpi_gbl_FADT->revision >= FADT2_REVISION_ID) {
+ if (acpi_gbl_FADT->length < sizeof (struct fadt_descriptor_rev2)) {
+ /* Length is too short to be a V2.0 table */
+
+ ACPI_REPORT_WARNING (("Inconsistent FADT length (0x%X) and revision (0x%X), using FADT V1.0 portion of table\n",
+ acpi_gbl_FADT->length, acpi_gbl_FADT->revision));
+
+ acpi_tb_convert_fadt1 (local_fadt, (void *) acpi_gbl_FADT);
+ }
+ else {
+ /* Valid V2.0 table */
+
+ acpi_tb_convert_fadt2 (local_fadt, acpi_gbl_FADT);
+ }
+ }
+ else {
+ /* Valid V1.0 table */
+
+ acpi_tb_convert_fadt1 (local_fadt, (void *) acpi_gbl_FADT);
+ }
+
+ /*
+ * Global FADT pointer will point to the new common V2.0 FADT
+ */
+ acpi_gbl_FADT = local_fadt;
+ acpi_gbl_FADT->length = sizeof (FADT_DESCRIPTOR);
+
+ /* Free the original table */
+
+ table_desc = acpi_gbl_table_lists[ACPI_TABLE_FADT].next;
+ acpi_tb_delete_single_table (table_desc);
+
+ /* Install the new table */
+
+ table_desc->pointer = ACPI_CAST_PTR (struct acpi_table_header, acpi_gbl_FADT);
+ table_desc->allocation = ACPI_MEM_ALLOCATED;
+ table_desc->length = sizeof (struct fadt_descriptor_rev2);
+
+ /* Dump the entire FADT */
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_TABLES,
+ "Hex dump of common internal FADT, size %d (%X)\n",
+ acpi_gbl_FADT->length, acpi_gbl_FADT->length));
+ ACPI_DUMP_BUFFER ((u8 *) (acpi_gbl_FADT), acpi_gbl_FADT->length);
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_convert_table_facs
+ *
+ * PARAMETERS: table_info - Info for currently installed FACS
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert ACPI 1.0 and ACPI 2.0 FACS to a common internal
+ * table format.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_build_common_facs (
+ struct acpi_table_desc *table_info)
+{
+
+ ACPI_FUNCTION_TRACE ("tb_build_common_facs");
+
+
+ /* Absolute minimum length is 24, but the ACPI spec says 64 */
+
+ if (acpi_gbl_FACS->length < 24) {
+ ACPI_REPORT_ERROR (("Invalid FACS table length: 0x%X\n", acpi_gbl_FACS->length));
+ return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
+ }
+
+ if (acpi_gbl_FACS->length < 64) {
+ ACPI_REPORT_WARNING (("FACS is shorter than the ACPI specification allows: 0x%X, using anyway\n",
+ acpi_gbl_FACS->length));
+ }
+
+ /* Copy fields to the new FACS */
+
+ acpi_gbl_common_fACS.global_lock = &(acpi_gbl_FACS->global_lock);
+
+ if ((acpi_gbl_RSDP->revision < 2) ||
+ (acpi_gbl_FACS->length < 32) ||
+ (!(acpi_gbl_FACS->xfirmware_waking_vector))) {
+ /* ACPI 1.0 FACS or short table or optional X_ field is zero */
+
+ acpi_gbl_common_fACS.firmware_waking_vector = ACPI_CAST_PTR (u64, &(acpi_gbl_FACS->firmware_waking_vector));
+ acpi_gbl_common_fACS.vector_width = 32;
+ }
+ else {
+ /* ACPI 2.0 FACS with valid X_ field */
+
+ acpi_gbl_common_fACS.firmware_waking_vector = &acpi_gbl_FACS->xfirmware_waking_vector;
+ acpi_gbl_common_fACS.vector_width = 64;
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
diff --git a/drivers/acpi/tables/tbget.c b/drivers/acpi/tables/tbget.c
new file mode 100644
index 0000000..896f3dd
--- /dev/null
+++ b/drivers/acpi/tables/tbget.c
@@ -0,0 +1,493 @@
+/******************************************************************************
+ *
+ * Module Name: tbget - ACPI Table get* routines
+ *
+ *****************************************************************************/
+
+/*
+ * 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 ("tbget")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_table
+ *
+ * PARAMETERS: Address - Address of table to retrieve. Can be
+ * Logical or Physical
+ * table_info - Where table info is returned
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Get entire table of unknown size.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_get_table (
+ struct acpi_pointer *address,
+ struct acpi_table_desc *table_info)
+{
+ acpi_status status;
+ struct acpi_table_header header;
+
+
+ ACPI_FUNCTION_TRACE ("tb_get_table");
+
+
+ /*
+ * 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);
+ }
+
+ /* Get the entire table */
+
+ status = acpi_tb_get_table_body (address, &header, table_info);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not get ACPI table (size %X), %s\n",
+ header.length, acpi_format_exception (status)));
+ return_ACPI_STATUS (status);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_table_header
+ *
+ * PARAMETERS: Address - Address of table to retrieve. Can be
+ * Logical or Physical
+ * return_header - Where the table header is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get an ACPI table header. Works in both physical or virtual
+ * addressing mode. Works with both physical or logical pointers.
+ * Table is either copied or mapped, depending on the pointer
+ * type and mode of the processor.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_get_table_header (
+ struct acpi_pointer *address,
+ struct acpi_table_header *return_header)
+{
+ acpi_status status = AE_OK;
+ struct acpi_table_header *header = NULL;
+
+
+ ACPI_FUNCTION_TRACE ("tb_get_table_header");
+
+
+ /*
+ * Flags contains the current processor mode (Virtual or Physical addressing)
+ * The pointer_type is either Logical or Physical
+ */
+ switch (address->pointer_type) {
+ case ACPI_PHYSMODE_PHYSPTR:
+ case ACPI_LOGMODE_LOGPTR:
+
+ /* Pointer matches processor mode, copy the header */
+
+ ACPI_MEMCPY (return_header, address->pointer.logical, sizeof (struct acpi_table_header));
+ break;
+
+
+ case ACPI_LOGMODE_PHYSPTR:
+
+ /* Create a logical address for the physical pointer*/
+
+ status = acpi_os_map_memory (address->pointer.physical, sizeof (struct acpi_table_header),
+ (void *) &header);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not map memory at %8.8X%8.8X for length %X\n",
+ ACPI_FORMAT_UINT64 (address->pointer.physical),
+ sizeof (struct acpi_table_header)));
+ return_ACPI_STATUS (status);
+ }
+
+ /* Copy header and delete mapping */
+
+ ACPI_MEMCPY (return_header, header, sizeof (struct acpi_table_header));
+ acpi_os_unmap_memory (header, sizeof (struct acpi_table_header));
+ break;
+
+
+ default:
+
+ ACPI_REPORT_ERROR (("Invalid address flags %X\n",
+ address->pointer_type));
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Table Signature: [%4.4s]\n",
+ return_header->signature));
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_table_body
+ *
+ * PARAMETERS: Address - Address of table to retrieve. Can be
+ * Logical or Physical
+ * Header - Header of the table to retrieve
+ * table_info - Where the table info is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get an entire ACPI table with support to allow the host OS to
+ * replace the table with a newer version (table override.)
+ * Works in both physical or virtual
+ * addressing mode. Works with both physical or logical pointers.
+ * Table is either copied or mapped, depending on the pointer
+ * type and mode of the processor.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_get_table_body (
+ struct acpi_pointer *address,
+ struct acpi_table_header *header,
+ struct acpi_table_desc *table_info)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("tb_get_table_body");
+
+
+ if (!table_info || !address) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /*
+ * Attempt table override.
+ */
+ status = acpi_tb_table_override (header, table_info);
+ if (ACPI_SUCCESS (status)) {
+ /* Table was overridden by the host OS */
+
+ return_ACPI_STATUS (status);
+ }
+
+ /* No override, get the original table */
+
+ status = acpi_tb_get_this_table (address, header, table_info);
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_table_override
+ *
+ * PARAMETERS: Header - Pointer to table header
+ * table_info - Return info if table is overridden
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Attempts override of current table with a new one if provided
+ * by the host OS.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_table_override (
+ struct acpi_table_header *header,
+ struct acpi_table_desc *table_info)
+{
+ struct acpi_table_header *new_table;
+ acpi_status status;
+ struct acpi_pointer address;
+
+
+ ACPI_FUNCTION_TRACE ("tb_table_override");
+
+
+ /*
+ * The OSL will examine the header and decide whether to override this
+ * table. If it decides to override, a table will be returned in new_table,
+ * which we will then copy.
+ */
+ status = acpi_os_table_override (header, &new_table);
+ if (ACPI_FAILURE (status)) {
+ /* Some severe error from the OSL, but we basically ignore it */
+
+ ACPI_REPORT_ERROR (("Could not override ACPI table, %s\n",
+ acpi_format_exception (status)));
+ return_ACPI_STATUS (status);
+ }
+
+ if (!new_table) {
+ /* No table override */
+
+ return_ACPI_STATUS (AE_NO_ACPI_TABLES);
+ }
+
+ /*
+ * We have a new table to override the old one. Get a copy of
+ * the new one. We know that the new table has a logical pointer.
+ */
+ address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
+ address.pointer.logical = new_table;
+
+ status = acpi_tb_get_this_table (&address, new_table, table_info);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not copy override ACPI table, %s\n",
+ acpi_format_exception (status)));
+ return_ACPI_STATUS (status);
+ }
+
+ /* Copy the table info */
+
+ ACPI_REPORT_INFO (("Table [%4.4s] replaced by host OS\n",
+ table_info->pointer->signature));
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_this_table
+ *
+ * PARAMETERS: Address - Address of table to retrieve. Can be
+ * Logical or Physical
+ * Header - Header of the table to retrieve
+ * table_info - Where the table info is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get an entire ACPI table. Works in both physical or virtual
+ * addressing mode. Works with both physical or logical pointers.
+ * Table is either copied or mapped, depending on the pointer
+ * type and mode of the processor.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_get_this_table (
+ struct acpi_pointer *address,
+ struct acpi_table_header *header,
+ struct acpi_table_desc *table_info)
+{
+ struct acpi_table_header *full_table = NULL;
+ u8 allocation;
+ acpi_status status = AE_OK;
+
+
+ ACPI_FUNCTION_TRACE ("tb_get_this_table");
+
+
+ /*
+ * Flags contains the current processor mode (Virtual or Physical addressing)
+ * The pointer_type is either Logical or Physical
+ */
+ switch (address->pointer_type) {
+ case ACPI_PHYSMODE_PHYSPTR:
+ case ACPI_LOGMODE_LOGPTR:
+
+ /* Pointer matches processor mode, copy the table to a new buffer */
+
+ full_table = ACPI_MEM_ALLOCATE (header->length);
+ if (!full_table) {
+ ACPI_REPORT_ERROR (("Could not allocate table memory for [%4.4s] length %X\n",
+ header->signature, header->length));
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Copy the entire table (including header) to the local buffer */
+
+ ACPI_MEMCPY (full_table, address->pointer.logical, header->length);
+
+ /* Save allocation type */
+
+ allocation = ACPI_MEM_ALLOCATED;
+ break;
+
+
+ case ACPI_LOGMODE_PHYSPTR:
+
+ /*
+ * Just map the table's physical memory
+ * into our address space.
+ */
+ status = acpi_os_map_memory (address->pointer.physical, (acpi_size) header->length,
+ (void *) &full_table);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X\n",
+ header->signature,
+ ACPI_FORMAT_UINT64 (address->pointer.physical), header->length));
+ return (status);
+ }
+
+ /* Save allocation type */
+
+ allocation = ACPI_MEM_MAPPED;
+ break;
+
+
+ default:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid address flags %X\n",
+ address->pointer_type));
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /*
+ * Validate checksum for _most_ tables,
+ * even the ones whose signature we don't recognize
+ */
+ if (table_info->type != ACPI_TABLE_FACS) {
+ status = acpi_tb_verify_table_checksum (full_table);
+
+#if (!ACPI_CHECKSUM_ABORT)
+ if (ACPI_FAILURE (status)) {
+ /* Ignore the error if configuration says so */
+
+ status = AE_OK;
+ }
+#endif
+ }
+
+ /* Return values */
+
+ table_info->pointer = full_table;
+ table_info->length = (acpi_size) header->length;
+ table_info->allocation = allocation;
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "Found table [%4.4s] at %8.8X%8.8X, mapped/copied to %p\n",
+ full_table->signature,
+ ACPI_FORMAT_UINT64 (address->pointer.physical), full_table));
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_table_ptr
+ *
+ * PARAMETERS: table_type - one of the defined table types
+ * Instance - Which table of this type
+ * table_ptr_loc - pointer to location to place the pointer for
+ * return
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to get the pointer to an ACPI table.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_get_table_ptr (
+ acpi_table_type table_type,
+ u32 instance,
+ struct acpi_table_header **table_ptr_loc)
+{
+ struct acpi_table_desc *table_desc;
+ u32 i;
+
+
+ ACPI_FUNCTION_TRACE ("tb_get_table_ptr");
+
+
+ if (!acpi_gbl_DSDT) {
+ return_ACPI_STATUS (AE_NO_ACPI_TABLES);
+ }
+
+ if (table_type > ACPI_TABLE_MAX) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /*
+ * For all table types (Single/Multiple), the first
+ * instance is always in the list head.
+ */
+ if (instance == 1) {
+ /* Get the first */
+
+ *table_ptr_loc = NULL;
+ if (acpi_gbl_table_lists[table_type].next) {
+ *table_ptr_loc = acpi_gbl_table_lists[table_type].next->pointer;
+ }
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /*
+ * Check for instance out of range
+ */
+ if (instance > acpi_gbl_table_lists[table_type].count) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+
+ /* Walk the list to get the desired table
+ * Since the if (Instance == 1) check above checked for the
+ * first table, setting table_desc equal to the .Next member
+ * is actually pointing to the second table. Therefore, we
+ * need to walk from the 2nd table until we reach the Instance
+ * that the user is looking for and return its table pointer.
+ */
+ table_desc = acpi_gbl_table_lists[table_type].next;
+ for (i = 2; i < instance; i++) {
+ table_desc = table_desc->next;
+ }
+
+ /* We are now pointing to the requested table's descriptor */
+
+ *table_ptr_loc = table_desc->pointer;
+
+ return_ACPI_STATUS (AE_OK);
+}
+
diff --git a/drivers/acpi/tables/tbgetall.c b/drivers/acpi/tables/tbgetall.c
new file mode 100644
index 0000000..adc4270
--- /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);
+}
+
+
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c
new file mode 100644
index 0000000..85d5bb0
--- /dev/null
+++ b/drivers/acpi/tables/tbinstal.c
@@ -0,0 +1,553 @@
+/******************************************************************************
+ *
+ * Module Name: tbinstal - ACPI table installation and removal
+ *
+ *****************************************************************************/
+
+/*
+ * 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 ("tbinstal")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_match_signature
+ *
+ * PARAMETERS: Signature - Table signature to match
+ * table_info - Return data
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Compare signature against the list of "ACPI-subsystem-owned"
+ * tables (DSDT/FADT/SSDT, etc.) Returns the table_type_iD on match.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_match_signature (
+ char *signature,
+ struct acpi_table_desc *table_info,
+ u8 search_type)
+{
+ acpi_native_uint i;
+
+
+ ACPI_FUNCTION_TRACE ("tb_match_signature");
+
+
+ /*
+ * Search for a signature match among the known table types
+ */
+ for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) {
+ if (!(acpi_gbl_table_data[i].flags & search_type)) {
+ continue;
+ }
+
+ if (!ACPI_STRNCMP (signature, acpi_gbl_table_data[i].signature,
+ acpi_gbl_table_data[i].sig_length)) {
+ /* Found a signature match, return index if requested */
+
+ if (table_info) {
+ table_info->type = (u8) i;
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "Table [%4.4s] is an ACPI table consumed by the core subsystem\n",
+ (char *) acpi_gbl_table_data[i].signature));
+
+ return_ACPI_STATUS (AE_OK);
+ }
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "Table [%4.4s] is not an ACPI table consumed by the core subsystem - ignored\n",
+ (char *) signature));
+
+ return_ACPI_STATUS (AE_TABLE_NOT_SUPPORTED);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_install_table
+ *
+ * PARAMETERS: table_info - Return value from acpi_tb_get_table_body
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Load and validate all tables other than the RSDT. The RSDT must
+ * already be loaded and validated.
+ * Install the table into the global data structs.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_install_table (
+ struct acpi_table_desc *table_info)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE ("tb_install_table");
+
+
+ /* Lock tables while installing */
+
+ status = acpi_ut_acquire_mutex (ACPI_MTX_TABLES);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not acquire table mutex for [%4.4s], %s\n",
+ table_info->pointer->signature, acpi_format_exception (status)));
+ return_ACPI_STATUS (status);
+ }
+
+ /* Install the table into the global data structure */
+
+ status = acpi_tb_init_table_descriptor (table_info->type, table_info);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not install ACPI table [%4.4s], %s\n",
+ table_info->pointer->signature, acpi_format_exception (status)));
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%s located at %p\n",
+ acpi_gbl_table_data[table_info->type].name, table_info->pointer));
+
+ (void) acpi_ut_release_mutex (ACPI_MTX_TABLES);
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_recognize_table
+ *
+ * PARAMETERS: table_info - Return value from acpi_tb_get_table_body
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Check a table signature for a match against known table types
+ *
+ * NOTE: All table pointers are validated as follows:
+ * 1) Table pointer must point to valid physical memory
+ * 2) Signature must be 4 ASCII chars, even if we don't recognize the
+ * name
+ * 3) Table must be readable for length specified in the header
+ * 4) Table checksum must be valid (with the exception of the FACS
+ * which has no checksum for some odd reason)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_recognize_table (
+ struct acpi_table_desc *table_info,
+ u8 search_type)
+{
+ struct acpi_table_header *table_header;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("tb_recognize_table");
+
+
+ /* Ensure that we have a valid table pointer */
+
+ table_header = (struct acpi_table_header *) table_info->pointer;
+ if (!table_header) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /*
+ * We only "recognize" a limited number of ACPI tables -- namely, the
+ * ones that are used by the subsystem (DSDT, FADT, etc.)
+ *
+ * An AE_TABLE_NOT_SUPPORTED means that the table was not recognized.
+ * This can be any one of many valid ACPI tables, it just isn't one of
+ * the tables that is consumed by the core subsystem
+ */
+ status = acpi_tb_match_signature (table_header->signature, table_info, search_type);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ status = acpi_tb_validate_table_header (table_header);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Return the table type and length via the info struct */
+
+ table_info->length = (acpi_size) table_header->length;
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_init_table_descriptor
+ *
+ * PARAMETERS: table_type - The type of the table
+ * table_info - A table info struct
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Install a table into the global data structs.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_init_table_descriptor (
+ acpi_table_type table_type,
+ struct acpi_table_desc *table_info)
+{
+ struct acpi_table_list *list_head;
+ struct acpi_table_desc *table_desc;
+
+
+ ACPI_FUNCTION_TRACE_U32 ("tb_init_table_descriptor", table_type);
+
+
+ /* Allocate a descriptor for this table */
+
+ table_desc = ACPI_MEM_CALLOCATE (sizeof (struct acpi_table_desc));
+ if (!table_desc) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /*
+ * Install the table into the global data structure
+ */
+ list_head = &acpi_gbl_table_lists[table_type];
+
+ /*
+ * Two major types of tables: 1) Only one instance is allowed. This
+ * includes most ACPI tables such as the DSDT. 2) Multiple instances of
+ * the table are allowed. This includes SSDT and PSDTs.
+ */
+ if (ACPI_IS_SINGLE_TABLE (acpi_gbl_table_data[table_type].flags)) {
+ /*
+ * Only one table allowed, and a table has alread been installed
+ * at this location, so return an error.
+ */
+ if (list_head->next) {
+ ACPI_MEM_FREE (table_desc);
+ return_ACPI_STATUS (AE_ALREADY_EXISTS);
+ }
+
+ table_desc->next = list_head->next;
+ list_head->next = table_desc;
+
+ if (table_desc->next) {
+ table_desc->next->prev = table_desc;
+ }
+
+ list_head->count++;
+ }
+ else {
+ /*
+ * Link the new table in to the list of tables of this type.
+ * Insert at the end of the list, order IS IMPORTANT.
+ *
+ * table_desc->Prev & Next are already NULL from calloc()
+ */
+ list_head->count++;
+
+ if (!list_head->next) {
+ list_head->next = table_desc;
+ }
+ else {
+ table_desc->next = list_head->next;
+
+ while (table_desc->next->next) {
+ table_desc->next = table_desc->next->next;
+ }
+
+ table_desc->next->next = table_desc;
+ table_desc->prev = table_desc->next;
+ table_desc->next = NULL;
+ }
+ }
+
+ /* Finish initialization of the table descriptor */
+
+ table_desc->type = (u8) table_type;
+ table_desc->pointer = table_info->pointer;
+ table_desc->length = table_info->length;
+ table_desc->allocation = table_info->allocation;
+ table_desc->aml_start = (u8 *) (table_desc->pointer + 1),
+ table_desc->aml_length = (u32) (table_desc->length -
+ (u32) sizeof (struct acpi_table_header));
+ table_desc->table_id = acpi_ut_allocate_owner_id (ACPI_OWNER_TYPE_TABLE);
+ table_desc->loaded_into_namespace = FALSE;
+
+ /*
+ * Set the appropriate global pointer (if there is one) to point to the
+ * newly installed table
+ */
+ if (acpi_gbl_table_data[table_type].global_ptr) {
+ *(acpi_gbl_table_data[table_type].global_ptr) = table_info->pointer;
+ }
+
+ /* Return Data */
+
+ table_info->table_id = table_desc->table_id;
+ table_info->installed_desc = table_desc;
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_delete_all_tables
+ *
+ * PARAMETERS: None.
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Delete all internal ACPI tables
+ *
+ ******************************************************************************/
+
+void
+acpi_tb_delete_all_tables (void)
+{
+ acpi_table_type type;
+
+
+ /*
+ * Free memory allocated for ACPI tables
+ * Memory can either be mapped or allocated
+ */
+ for (type = 0; type < NUM_ACPI_TABLE_TYPES; type++) {
+ acpi_tb_delete_tables_by_type (type);
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_delete_tables_by_type
+ *
+ * PARAMETERS: Type - The table type to be deleted
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Delete an internal ACPI table
+ * Locks the ACPI table mutex
+ *
+ ******************************************************************************/
+
+void
+acpi_tb_delete_tables_by_type (
+ acpi_table_type type)
+{
+ struct acpi_table_desc *table_desc;
+ u32 count;
+ u32 i;
+
+
+ ACPI_FUNCTION_TRACE_U32 ("tb_delete_tables_by_type", type);
+
+
+ if (type > ACPI_TABLE_MAX) {
+ return_VOID;
+ }
+
+ if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_TABLES))) {
+ return;
+ }
+
+ /* Clear the appropriate "typed" global table pointer */
+
+ switch (type) {
+ case ACPI_TABLE_RSDP:
+ acpi_gbl_RSDP = NULL;
+ break;
+
+ case ACPI_TABLE_DSDT:
+ acpi_gbl_DSDT = NULL;
+ break;
+
+ case ACPI_TABLE_FADT:
+ acpi_gbl_FADT = NULL;
+ break;
+
+ case ACPI_TABLE_FACS:
+ acpi_gbl_FACS = NULL;
+ break;
+
+ case ACPI_TABLE_XSDT:
+ acpi_gbl_XSDT = NULL;
+ break;
+
+ case ACPI_TABLE_SSDT:
+ case ACPI_TABLE_PSDT:
+ default:
+ break;
+ }
+
+ /*
+ * Free the table
+ * 1) Get the head of the list
+ */
+ table_desc = acpi_gbl_table_lists[type].next;
+ count = acpi_gbl_table_lists[type].count;
+
+ /*
+ * 2) Walk the entire list, deleting both the allocated tables
+ * and the table descriptors
+ */
+ for (i = 0; i < count; i++) {
+ table_desc = acpi_tb_uninstall_table (table_desc);
+ }
+
+ (void) acpi_ut_release_mutex (ACPI_MTX_TABLES);
+ return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_delete_single_table
+ *
+ * PARAMETERS: table_info - A table info struct
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Low-level free for a single ACPI table. Handles cases where
+ * the table was allocated a buffer or was mapped.
+ *
+ ******************************************************************************/
+
+void
+acpi_tb_delete_single_table (
+ struct acpi_table_desc *table_desc)
+{
+
+ /* Must have a valid table descriptor and pointer */
+
+ if ((!table_desc) ||
+ (!table_desc->pointer)) {
+ return;
+ }
+
+ /* Valid table, determine type of memory allocation */
+
+ switch (table_desc->allocation) {
+ case ACPI_MEM_NOT_ALLOCATED:
+ break;
+
+ case ACPI_MEM_ALLOCATED:
+
+ ACPI_MEM_FREE (table_desc->pointer);
+ break;
+
+ case ACPI_MEM_MAPPED:
+
+ acpi_os_unmap_memory (table_desc->pointer, table_desc->length);
+ break;
+
+ default:
+ break;
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_uninstall_table
+ *
+ * PARAMETERS: table_info - A table info struct
+ *
+ * RETURN: Pointer to the next table in the list (of same type)
+ *
+ * DESCRIPTION: Free the memory associated with an internal ACPI table that
+ * is either installed or has never been installed.
+ * Table mutex should be locked.
+ *
+ ******************************************************************************/
+
+struct acpi_table_desc *
+acpi_tb_uninstall_table (
+ struct acpi_table_desc *table_desc)
+{
+ struct acpi_table_desc *next_desc;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("tb_uninstall_table", table_desc);
+
+
+ if (!table_desc) {
+ return_PTR (NULL);
+ }
+
+ /* Unlink the descriptor from the doubly linked list */
+
+ if (table_desc->prev) {
+ table_desc->prev->next = table_desc->next;
+ }
+ else {
+ /* Is first on list, update list head */
+
+ acpi_gbl_table_lists[table_desc->type].next = table_desc->next;
+ }
+
+ if (table_desc->next) {
+ table_desc->next->prev = table_desc->prev;
+ }
+
+ /* Free the memory allocated for the table itself */
+
+ acpi_tb_delete_single_table (table_desc);
+
+ /* Free the table descriptor */
+
+ next_desc = table_desc->next;
+ ACPI_MEM_FREE (table_desc);
+
+ /* Return pointer to the next descriptor */
+
+ return_PTR (next_desc);
+}
+
+
diff --git a/drivers/acpi/tables/tbrsdt.c b/drivers/acpi/tables/tbrsdt.c
new file mode 100644
index 0000000..9c69132
--- /dev/null
+++ b/drivers/acpi/tables/tbrsdt.c
@@ -0,0 +1,324 @@
+/******************************************************************************
+ *
+ * Module Name: tbrsdt - ACPI RSDT table utilities
+ *
+ *****************************************************************************/
+
+/*
+ * 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 ("tbrsdt")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_verify_rsdp
+ *
+ * PARAMETERS: Address - RSDP (Pointer to RSDT)
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_verify_rsdp (
+ struct acpi_pointer *address)
+{
+ struct acpi_table_desc table_info;
+ acpi_status status;
+ struct rsdp_descriptor *rsdp;
+
+
+ ACPI_FUNCTION_TRACE ("tb_verify_rsdp");
+
+
+ switch (address->pointer_type) {
+ case ACPI_LOGICAL_POINTER:
+
+ rsdp = address->pointer.logical;
+ break;
+
+ case ACPI_PHYSICAL_POINTER:
+ /*
+ * Obtain access to the RSDP structure
+ */
+ status = acpi_os_map_memory (address->pointer.physical, sizeof (struct rsdp_descriptor),
+ (void *) &rsdp);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /*
+ * The signature and checksum must both be correct
+ */
+ if (ACPI_STRNCMP ((char *) rsdp, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) {
+ /* Nope, BAD Signature */
+
+ status = AE_BAD_SIGNATURE;
+ goto cleanup;
+ }
+
+ /* Check the standard checksum */
+
+ if (acpi_tb_checksum (rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
+ status = AE_BAD_CHECKSUM;
+ goto cleanup;
+ }
+
+ /* Check extended checksum if table version >= 2 */
+
+ if (rsdp->revision >= 2) {
+ if (acpi_tb_checksum (rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0) {
+ status = AE_BAD_CHECKSUM;
+ goto cleanup;
+ }
+ }
+
+ /* The RSDP supplied is OK */
+
+ table_info.pointer = ACPI_CAST_PTR (struct acpi_table_header, rsdp);
+ table_info.length = sizeof (struct rsdp_descriptor);
+ table_info.allocation = ACPI_MEM_MAPPED;
+
+ /* Save the table pointers and allocation info */
+
+ status = acpi_tb_init_table_descriptor (ACPI_TABLE_RSDP, &table_info);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ /* Save the RSDP in a global for easy access */
+
+ acpi_gbl_RSDP = ACPI_CAST_PTR (struct rsdp_descriptor, table_info.pointer);
+ return_ACPI_STATUS (status);
+
+
+ /* Error exit */
+cleanup:
+
+ if (acpi_gbl_table_flags & ACPI_PHYSICAL_POINTER) {
+ acpi_os_unmap_memory (rsdp, sizeof (struct rsdp_descriptor));
+ }
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_rsdt_address
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: RSDT physical address
+ *
+ * DESCRIPTION: Extract the address of the RSDT or XSDT, depending on the
+ * version of the RSDP
+ *
+ ******************************************************************************/
+
+void
+acpi_tb_get_rsdt_address (
+ struct acpi_pointer *out_address)
+{
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ out_address->pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING;
+
+ /*
+ * For RSDP revision 0 or 1, we use the RSDT.
+ * For RSDP revision 2 (and above), we use the XSDT
+ */
+ if (acpi_gbl_RSDP->revision < 2) {
+ out_address->pointer.value = acpi_gbl_RSDP->rsdt_physical_address;
+ }
+ else {
+ out_address->pointer.value = acpi_gbl_RSDP->xsdt_physical_address;
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_validate_rsdt
+ *
+ * PARAMETERS: table_ptr - Addressable pointer to the RSDT.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Validate signature for the RSDT or XSDT
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_validate_rsdt (
+ struct acpi_table_header *table_ptr)
+{
+ int no_match;
+
+
+ ACPI_FUNCTION_NAME ("tb_validate_rsdt");
+
+
+ /*
+ * For RSDP revision 0 or 1, we use the RSDT.
+ * For RSDP revision 2 and above, we use the XSDT
+ */
+ if (acpi_gbl_RSDP->revision < 2) {
+ no_match = ACPI_STRNCMP ((char *) table_ptr, RSDT_SIG,
+ sizeof (RSDT_SIG) -1);
+ }
+ else {
+ no_match = ACPI_STRNCMP ((char *) table_ptr, XSDT_SIG,
+ sizeof (XSDT_SIG) -1);
+ }
+
+ if (no_match) {
+ /* Invalid RSDT or XSDT signature */
+
+ ACPI_REPORT_ERROR (("Invalid signature where RSDP indicates RSDT/XSDT should be located\n"));
+
+ ACPI_DUMP_BUFFER (acpi_gbl_RSDP, 20);
+
+ ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR,
+ "RSDT/XSDT signature at %X (%p) is invalid\n",
+ acpi_gbl_RSDP->rsdt_physical_address,
+ (void *) (acpi_native_uint) acpi_gbl_RSDP->rsdt_physical_address));
+
+ if (acpi_gbl_RSDP->revision < 2) {
+ ACPI_REPORT_ERROR (("Looking for RSDT (RSDP->Rev < 2)\n"))
+ }
+ else {
+ ACPI_REPORT_ERROR (("Looking for XSDT (RSDP->Rev >= 2)\n"))
+ }
+
+ ACPI_DUMP_BUFFER ((char *) table_ptr, 48);
+
+ return (AE_BAD_SIGNATURE);
+ }
+
+ return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_get_table_rsdt
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_get_table_rsdt (
+ void)
+{
+ struct acpi_table_desc table_info;
+ acpi_status status;
+ struct acpi_pointer address;
+
+
+ ACPI_FUNCTION_TRACE ("tb_get_table_rsdt");
+
+
+ /* Get the RSDT/XSDT via the RSDP */
+
+ acpi_tb_get_rsdt_address (&address);
+
+ table_info.type = ACPI_TABLE_XSDT;
+ status = acpi_tb_get_table (&address, &table_info);
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not get the RSDT/XSDT, %s\n",
+ acpi_format_exception (status)));
+ return_ACPI_STATUS (status);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "RSDP located at %p, points to RSDT physical=%8.8X%8.8X \n",
+ acpi_gbl_RSDP,
+ ACPI_FORMAT_UINT64 (address.pointer.value)));
+
+ /* Check the RSDT or XSDT signature */
+
+ status = acpi_tb_validate_rsdt (table_info.pointer);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Get the number of tables defined in the RSDT or XSDT */
+
+ acpi_gbl_rsdt_table_count = acpi_tb_get_table_count (acpi_gbl_RSDP, table_info.pointer);
+
+ /* Convert and/or copy to an XSDT structure */
+
+ status = acpi_tb_convert_to_xsdt (&table_info);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Save the table pointers and allocation info */
+
+ status = acpi_tb_init_table_descriptor (ACPI_TABLE_XSDT, &table_info);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ acpi_gbl_XSDT = ACPI_CAST_PTR (XSDT_DESCRIPTOR, table_info.pointer);
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "XSDT located at %p\n", acpi_gbl_XSDT));
+ return_ACPI_STATUS (status);
+}
+
+
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c
new file mode 100644
index 0000000..fede580
--- /dev/null
+++ b/drivers/acpi/tables/tbutils.c
@@ -0,0 +1,240 @@
+/******************************************************************************
+ *
+ * Module Name: tbutils - Table manipulation utilities
+ *
+ *****************************************************************************/
+
+/*
+ * 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 ("tbutils")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_handle_to_object
+ *
+ * PARAMETERS: table_id - Id for which the function is searching
+ * table_desc - Pointer to return the matching table
+ * descriptor.
+ *
+ * RETURN: Search the tables to find one with a matching table_id and
+ * return a pointer to that table descriptor.
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+acpi_status
+acpi_tb_handle_to_object (
+ u16 table_id,
+ struct acpi_table_desc **return_table_desc)
+{
+ u32 i;
+ struct acpi_table_desc *table_desc;
+
+
+ ACPI_FUNCTION_NAME ("tb_handle_to_object");
+
+
+ for (i = 0; i < ACPI_TABLE_MAX; i++) {
+ table_desc = acpi_gbl_table_lists[i].next;
+ while (table_desc) {
+ if (table_desc->table_id == table_id) {
+ *return_table_desc = table_desc;
+ return (AE_OK);
+ }
+
+ table_desc = table_desc->next;
+ }
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "table_id=%X does not exist\n", table_id));
+ return (AE_BAD_PARAMETER);
+}
+#endif /* ACPI_FUTURE_USAGE */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_validate_table_header
+ *
+ * PARAMETERS: table_header - Logical pointer to the table
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Check an ACPI table header for validity
+ *
+ * NOTE: Table pointers are validated as follows:
+ * 1) Table pointer must point to valid physical memory
+ * 2) Signature must be 4 ASCII chars, even if we don't recognize the
+ * name
+ * 3) Table must be readable for length specified in the header
+ * 4) Table checksum must be valid (with the exception of the FACS
+ * which has no checksum because it contains variable fields)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_validate_table_header (
+ struct acpi_table_header *table_header)
+{
+ acpi_name signature;
+
+
+ ACPI_FUNCTION_NAME ("tb_validate_table_header");
+
+
+ /* Verify that this is a valid address */
+
+ if (!acpi_os_readable (table_header, sizeof (struct acpi_table_header))) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Cannot read table header at %p\n", table_header));
+ return (AE_BAD_ADDRESS);
+ }
+
+ /* Ensure that the signature is 4 ASCII characters */
+
+ ACPI_MOVE_32_TO_32 (&signature, table_header->signature);
+ if (!acpi_ut_valid_acpi_name (signature)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Table signature at %p [%p] has invalid characters\n",
+ table_header, &signature));
+
+ ACPI_REPORT_WARNING (("Invalid table signature found: [%4.4s]\n",
+ (char *) &signature));
+ ACPI_DUMP_BUFFER (table_header, sizeof (struct acpi_table_header));
+ return (AE_BAD_SIGNATURE);
+ }
+
+ /* Validate the table length */
+
+ if (table_header->length < sizeof (struct acpi_table_header)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Invalid length in table header %p name %4.4s\n",
+ table_header, (char *) &signature));
+
+ ACPI_REPORT_WARNING (("Invalid table header length (0x%X) found\n",
+ (u32) table_header->length));
+ ACPI_DUMP_BUFFER (table_header, sizeof (struct acpi_table_header));
+ return (AE_BAD_HEADER);
+ }
+
+ return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_verify_table_checksum
+ *
+ * PARAMETERS: *table_header - ACPI table to verify
+ *
+ * RETURN: 8 bit checksum of table
+ *
+ * DESCRIPTION: Does an 8 bit checksum of table and returns status. A correct
+ * table should have a checksum of 0.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_verify_table_checksum (
+ struct acpi_table_header *table_header)
+{
+ u8 checksum;
+ acpi_status status = AE_OK;
+
+
+ ACPI_FUNCTION_TRACE ("tb_verify_table_checksum");
+
+
+ /* Compute the checksum on the table */
+
+ checksum = acpi_tb_checksum (table_header, table_header->length);
+
+ /* Return the appropriate exception */
+
+ if (checksum) {
+ ACPI_REPORT_WARNING (("Invalid checksum in table [%4.4s] (%02X, sum %02X is not zero)\n",
+ table_header->signature, (u32) table_header->checksum, (u32) checksum));
+
+ status = AE_BAD_CHECKSUM;
+ }
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_checksum
+ *
+ * PARAMETERS: Buffer - Buffer to checksum
+ * Length - Size of the buffer
+ *
+ * RETURNS 8 bit checksum of buffer
+ *
+ * DESCRIPTION: Computes an 8 bit checksum of the buffer(length) and returns it.
+ *
+ ******************************************************************************/
+
+u8
+acpi_tb_checksum (
+ void *buffer,
+ u32 length)
+{
+ const u8 *limit;
+ const u8 *rover;
+ u8 sum = 0;
+
+
+ if (buffer && length) {
+ /* Buffer and Length are valid */
+
+ limit = (u8 *) buffer + length;
+
+ for (rover = buffer; rover < limit; rover++) {
+ sum = (u8) (sum + *rover);
+ }
+ }
+ return (sum);
+}
+
+
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
new file mode 100644
index 0000000..7715043
--- /dev/null
+++ b/drivers/acpi/tables/tbxface.c
@@ -0,0 +1,448 @@
+/******************************************************************************
+ *
+ * Module Name: tbxface - Public interfaces to the ACPI subsystem
+ * ACPI table oriented interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * 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 <linux/module.h>
+
+#include <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+#include <acpi/actables.h>
+
+
+#define _COMPONENT ACPI_TABLES
+ ACPI_MODULE_NAME ("tbxface")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_load_tables
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to load the ACPI tables from the
+ * provided RSDT
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_load_tables (void)
+{
+ struct acpi_pointer rsdp_address;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_load_tables");
+
+
+ /* Get the RSDP */
+
+ status = acpi_os_get_root_pointer (ACPI_LOGICAL_ADDRESSING,
+ &rsdp_address);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("acpi_load_tables: Could not get RSDP, %s\n",
+ acpi_format_exception (status)));
+ goto error_exit;
+ }
+
+ /* Map and validate the RSDP */
+
+ acpi_gbl_table_flags = rsdp_address.pointer_type;
+
+ status = acpi_tb_verify_rsdp (&rsdp_address);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("acpi_load_tables: RSDP Failed validation: %s\n",
+ acpi_format_exception (status)));
+ goto error_exit;
+ }
+
+ /* Get the RSDT via the RSDP */
+
+ status = acpi_tb_get_table_rsdt ();
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("acpi_load_tables: Could not load RSDT: %s\n",
+ acpi_format_exception (status)));
+ goto error_exit;
+ }
+
+ /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */
+
+ status = acpi_tb_get_required_tables ();
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("acpi_load_tables: Error getting required tables (DSDT/FADT/FACS): %s\n",
+ acpi_format_exception (status)));
+ goto error_exit;
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
+
+
+ /* Load the namespace from the tables */
+
+ status = acpi_ns_load_namespace ();
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("acpi_load_tables: Could not load namespace: %s\n",
+ acpi_format_exception (status)));
+ goto error_exit;
+ }
+
+ return_ACPI_STATUS (AE_OK);
+
+
+error_exit:
+ ACPI_REPORT_ERROR (("acpi_load_tables: Could not load tables: %s\n",
+ acpi_format_exception (status)));
+
+ return_ACPI_STATUS (status);
+}
+
+
+#ifdef ACPI_FUTURE_USAGE
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_load_table
+ *
+ * PARAMETERS: table_ptr - pointer to a buffer containing the entire
+ * table to be loaded
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to load a table from the caller's
+ * buffer. The buffer must contain an entire ACPI Table including
+ * a valid header. The header fields will be verified, and if it
+ * is determined that the table is invalid, the call will fail.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_load_table (
+ struct acpi_table_header *table_ptr)
+{
+ acpi_status status;
+ struct acpi_table_desc table_info;
+ struct acpi_pointer address;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_load_table");
+
+
+ if (!table_ptr) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Copy the table to a local buffer */
+
+ address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
+ address.pointer.logical = table_ptr;
+
+ status = acpi_tb_get_table_body (&address, table_ptr, &table_info);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Install the new table into the local data structures */
+
+ status = acpi_tb_install_table (&table_info);
+ if (ACPI_FAILURE (status)) {
+ /* Free table allocated by acpi_tb_get_table_body */
+
+ acpi_tb_delete_single_table (&table_info);
+ return_ACPI_STATUS (status);
+ }
+
+ /* Convert the table to common format if necessary */
+
+ switch (table_info.type) {
+ case ACPI_TABLE_FADT:
+
+ status = acpi_tb_convert_table_fadt ();
+ break;
+
+ case ACPI_TABLE_FACS:
+
+ status = acpi_tb_build_common_facs (&table_info);
+ break;
+
+ default:
+ /* Load table into namespace if it contains executable AML */
+
+ status = acpi_ns_load_table (table_info.installed_desc, acpi_gbl_root_node);
+ break;
+ }
+
+ if (ACPI_FAILURE (status)) {
+ /* Uninstall table and free the buffer */
+
+ (void) acpi_tb_uninstall_table (table_info.installed_desc);
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_unload_table
+ *
+ * PARAMETERS: table_type - Type of table to be unloaded
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This routine is used to force the unload of a table
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_unload_table (
+ acpi_table_type table_type)
+{
+ struct acpi_table_desc *table_desc;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_unload_table");
+
+
+ /* Parameter validation */
+
+ if (table_type > ACPI_TABLE_MAX) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+
+ /* Find all tables of the requested type */
+
+ table_desc = acpi_gbl_table_lists[table_type].next;
+ while (table_desc) {
+ /*
+ * Delete all namespace entries owned by this table. Note that these
+ * entries can appear anywhere in the namespace by virtue of the AML
+ * "Scope" operator. Thus, we need to track ownership by an ID, not
+ * simply a position within the hierarchy
+ */
+ acpi_ns_delete_namespace_by_owner (table_desc->table_id);
+
+ table_desc = table_desc->next;
+ }
+
+ /* Delete (or unmap) all tables of this type */
+
+ acpi_tb_delete_tables_by_type (table_type);
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_get_table_header
+ *
+ * PARAMETERS: table_type - one of the defined table types
+ * Instance - the non zero instance of the table, allows
+ * support for multiple tables of the same type
+ * see acpi_gbl_acpi_table_flag
+ * out_table_header - pointer to the struct acpi_table_header if successful
+ *
+ * DESCRIPTION: This function is called to get an ACPI table header. The caller
+ * supplies an pointer to a data area sufficient to contain an ACPI
+ * struct acpi_table_header structure.
+ *
+ * The header contains a length field that can be used to determine
+ * the size of the buffer needed to contain the entire table. This
+ * function is not valid for the RSD PTR table since it does not
+ * have a standard header and is fixed length.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_get_table_header (
+ acpi_table_type table_type,
+ u32 instance,
+ struct acpi_table_header *out_table_header)
+{
+ struct acpi_table_header *tbl_ptr;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_get_table_header");
+
+
+ if ((instance == 0) ||
+ (table_type == ACPI_TABLE_RSDP) ||
+ (!out_table_header)) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Check the table type and instance */
+
+ if ((table_type > ACPI_TABLE_MAX) ||
+ (ACPI_IS_SINGLE_TABLE (acpi_gbl_table_data[table_type].flags) &&
+ instance > 1)) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+
+ /* Get a pointer to the entire table */
+
+ status = acpi_tb_get_table_ptr (table_type, instance, &tbl_ptr);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * The function will return a NULL pointer if the table is not loaded
+ */
+ if (tbl_ptr == NULL) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+
+ /*
+ * Copy the header to the caller's buffer
+ */
+ ACPI_MEMCPY ((void *) out_table_header, (void *) tbl_ptr,
+ sizeof (struct acpi_table_header));
+
+ return_ACPI_STATUS (status);
+}
+
+
+#endif /* ACPI_FUTURE_USAGE */
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_get_table
+ *
+ * PARAMETERS: table_type - one of the defined table types
+ * Instance - the non zero instance of the table, allows
+ * support for multiple tables of the same type
+ * see acpi_gbl_acpi_table_flag
+ * ret_buffer - pointer to a structure containing a buffer to
+ * receive the table
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to get an ACPI table. The caller
+ * supplies an out_buffer large enough to contain the entire ACPI
+ * table. The caller should call the acpi_get_table_header function
+ * first to determine the buffer size needed. Upon completion
+ * the out_buffer->Length field will indicate the number of bytes
+ * copied into the out_buffer->buf_ptr buffer. This table will be
+ * a complete table including the header.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_get_table (
+ acpi_table_type table_type,
+ u32 instance,
+ struct acpi_buffer *ret_buffer)
+{
+ struct acpi_table_header *tbl_ptr;
+ acpi_status status;
+ acpi_size table_length;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_get_table");
+
+
+ /* Parameter validation */
+
+ if (instance == 0) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ status = acpi_ut_validate_buffer (ret_buffer);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Check the table type and instance */
+
+ if ((table_type > ACPI_TABLE_MAX) ||
+ (ACPI_IS_SINGLE_TABLE (acpi_gbl_table_data[table_type].flags) &&
+ instance > 1)) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+
+ /* Get a pointer to the entire table */
+
+ status = acpi_tb_get_table_ptr (table_type, instance, &tbl_ptr);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * acpi_tb_get_table_ptr will return a NULL pointer if the
+ * table is not loaded.
+ */
+ if (tbl_ptr == NULL) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+
+ /* Get the table length */
+
+ if (table_type == ACPI_TABLE_RSDP) {
+ /*
+ * RSD PTR is the only "table" without a header
+ */
+ table_length = sizeof (struct rsdp_descriptor);
+ }
+ else {
+ table_length = (acpi_size) tbl_ptr->length;
+ }
+
+ /* Validate/Allocate/Clear caller buffer */
+
+ status = acpi_ut_initialize_buffer (ret_buffer, table_length);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Copy the table to the buffer */
+
+ ACPI_MEMCPY ((void *) ret_buffer->pointer, (void *) tbl_ptr, table_length);
+ return_ACPI_STATUS (AE_OK);
+}
+EXPORT_SYMBOL(acpi_get_table);
+
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
new file mode 100644
index 0000000..6e8072e
--- /dev/null
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -0,0 +1,606 @@
+/******************************************************************************
+ *
+ * Module Name: tbxfroot - Find the root ACPI table (RSDT)
+ *
+ *****************************************************************************/
+
+/*
+ * 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 <linux/module.h>
+
+#include <acpi/acpi.h>
+#include <acpi/actables.h>
+
+
+#define _COMPONENT ACPI_TABLES
+ ACPI_MODULE_NAME ("tbxfroot")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_find_table
+ *
+ * PARAMETERS: Signature - String with ACPI table signature
+ * oem_id - String with the table OEM ID
+ * oem_table_id - String with the OEM Table ID.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the
+ * Signature, OEM ID and OEM Table ID.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_find_table (
+ char *signature,
+ char *oem_id,
+ char *oem_table_id,
+ struct acpi_table_header **table_ptr)
+{
+ acpi_status status;
+ struct acpi_table_header *table;
+
+
+ ACPI_FUNCTION_TRACE ("tb_find_table");
+
+
+ /* Validate string lengths */
+
+ if ((ACPI_STRLEN (signature) > ACPI_NAME_SIZE) ||
+ (ACPI_STRLEN (oem_id) > sizeof (table->oem_id)) ||
+ (ACPI_STRLEN (oem_table_id) > sizeof (table->oem_table_id))) {
+ return_ACPI_STATUS (AE_AML_STRING_LIMIT);
+ }
+
+ if (!ACPI_STRNCMP (signature, DSDT_SIG, ACPI_NAME_SIZE)) {
+ /*
+ * The DSDT pointer is contained in the FADT, not the RSDT.
+ * This code should suffice, because the only code that would perform
+ * a "find" on the DSDT is the data_table_region() AML opcode -- in
+ * which case, the DSDT is guaranteed to be already loaded.
+ * If this becomes insufficient, the FADT will have to be found first.
+ */
+ if (!acpi_gbl_DSDT) {
+ return_ACPI_STATUS (AE_NO_ACPI_TABLES);
+ }
+
+ table = acpi_gbl_DSDT;
+ }
+ else {
+ /* Find the table */
+
+ status = acpi_get_firmware_table (signature, 1,
+ ACPI_LOGICAL_ADDRESSING, &table);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ }
+
+ /* Check oem_id and oem_table_id */
+
+ if ((oem_id[0] && ACPI_STRNCMP (
+ oem_id, table->oem_id, sizeof (table->oem_id))) ||
+ (oem_table_id[0] && ACPI_STRNCMP (
+ oem_table_id, table->oem_table_id, sizeof (table->oem_table_id)))) {
+ return_ACPI_STATUS (AE_AML_NAME_NOT_FOUND);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", table->signature));
+ *table_ptr = table;
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_get_firmware_table
+ *
+ * PARAMETERS: Signature - Any ACPI table signature
+ * Instance - the non zero instance of the table, allows
+ * support for multiple tables of the same type
+ * Flags - Physical/Virtual support
+ * table_pointer - Where a buffer containing the table is
+ * returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to get an ACPI table. A buffer is
+ * allocated for the table and returned in table_pointer.
+ * This table will be a complete table including the header.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_get_firmware_table (
+ acpi_string signature,
+ u32 instance,
+ u32 flags,
+ struct acpi_table_header **table_pointer)
+{
+ acpi_status status;
+ struct acpi_pointer address;
+ struct acpi_table_header *header = NULL;
+ struct acpi_table_desc *table_info = NULL;
+ struct acpi_table_desc *rsdt_info;
+ u32 table_count;
+ u32 i;
+ u32 j;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_get_firmware_table");
+
+
+ /*
+ * Ensure that at least the table manager is initialized. We don't
+ * require that the entire ACPI subsystem is up for this interface.
+ * If we have a buffer, we must have a length too
+ */
+ if ((instance == 0) ||
+ (!signature) ||
+ (!table_pointer)) {
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Ensure that we have a RSDP */
+
+ if (!acpi_gbl_RSDP) {
+ /* Get the RSDP */
+
+ status = acpi_os_get_root_pointer (flags, &address);
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "RSDP not found\n"));
+ return_ACPI_STATUS (AE_NO_ACPI_TABLES);
+ }
+
+ /* Map and validate the RSDP */
+
+ if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
+ status = acpi_os_map_memory (address.pointer.physical, sizeof (struct rsdp_descriptor),
+ (void *) &acpi_gbl_RSDP);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ }
+ else {
+ acpi_gbl_RSDP = address.pointer.logical;
+ }
+
+ /* The signature and checksum must both be correct */
+
+ if (ACPI_STRNCMP ((char *) acpi_gbl_RSDP, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) {
+ /* Nope, BAD Signature */
+
+ return_ACPI_STATUS (AE_BAD_SIGNATURE);
+ }
+
+ if (acpi_tb_checksum (acpi_gbl_RSDP, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
+ /* Nope, BAD Checksum */
+
+ return_ACPI_STATUS (AE_BAD_CHECKSUM);
+ }
+ }
+
+ /* Get the RSDT address via the RSDP */
+
+ acpi_tb_get_rsdt_address (&address);
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "RSDP located at %p, RSDT physical=%8.8X%8.8X \n",
+ acpi_gbl_RSDP,
+ ACPI_FORMAT_UINT64 (address.pointer.value)));
+
+ /* Insert processor_mode flags */
+
+ address.pointer_type |= flags;
+
+ /* Get and validate the RSDT */
+
+ rsdt_info = ACPI_MEM_CALLOCATE (sizeof (struct acpi_table_desc));
+ if (!rsdt_info) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ status = acpi_tb_get_table (&address, rsdt_info);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ status = acpi_tb_validate_rsdt (rsdt_info->pointer);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ /* Allocate a scratch table header and table descriptor */
+
+ header = ACPI_MEM_ALLOCATE (sizeof (struct acpi_table_header));
+ if (!header) {
+ status = AE_NO_MEMORY;
+ goto cleanup;
+ }
+
+ table_info = ACPI_MEM_ALLOCATE (sizeof (struct acpi_table_desc));
+ if (!table_info) {
+ status = AE_NO_MEMORY;
+ goto cleanup;
+ }
+
+ /* Get the number of table pointers within the RSDT */
+
+ table_count = acpi_tb_get_table_count (acpi_gbl_RSDP, rsdt_info->pointer);
+ address.pointer_type = acpi_gbl_table_flags | flags;
+
+ /*
+ * Search the RSDT/XSDT for the correct instance of the
+ * requested table
+ */
+ for (i = 0, j = 0; i < table_count; i++) {
+ /* Get the next table pointer, handle RSDT vs. XSDT */
+
+ if (acpi_gbl_RSDP->revision < 2) {
+ address.pointer.value = (ACPI_CAST_PTR (
+ RSDT_DESCRIPTOR, rsdt_info->pointer))->table_offset_entry[i];
+ }
+ else {
+ address.pointer.value = (ACPI_CAST_PTR (
+ XSDT_DESCRIPTOR, rsdt_info->pointer))->table_offset_entry[i];
+ }
+
+ /* Get the table header */
+
+ status = acpi_tb_get_table_header (&address, header);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ /* Compare table signatures and table instance */
+
+ if (!ACPI_STRNCMP (header->signature, signature, ACPI_NAME_SIZE)) {
+ /* An instance of the table was found */
+
+ j++;
+ if (j >= instance) {
+ /* Found the correct instance, get the entire table */
+
+ status = acpi_tb_get_table_body (&address, header, table_info);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ *table_pointer = table_info->pointer;
+ goto cleanup;
+ }
+ }
+ }
+
+ /* Did not find the table */
+
+ status = AE_NOT_EXIST;
+
+
+cleanup:
+ acpi_os_unmap_memory (rsdt_info->pointer, (acpi_size) rsdt_info->pointer->length);
+ ACPI_MEM_FREE (rsdt_info);
+
+ if (header) {
+ ACPI_MEM_FREE (header);
+ }
+ if (table_info) {
+ ACPI_MEM_FREE (table_info);
+ }
+ return_ACPI_STATUS (status);
+}
+EXPORT_SYMBOL(acpi_get_firmware_table);
+
+
+/* TBD: Move to a new file */
+
+#if ACPI_MACHINE_WIDTH != 16
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_find_root_pointer
+ *
+ * PARAMETERS: **rsdp_address - Where to place the RSDP address
+ * Flags - Logical/Physical addressing
+ *
+ * RETURN: Status, Physical address of the RSDP
+ *
+ * DESCRIPTION: Find the RSDP
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_find_root_pointer (
+ u32 flags,
+ struct acpi_pointer *rsdp_address)
+{
+ struct acpi_table_desc table_info;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_find_root_pointer");
+
+
+ /* Get the RSDP */
+
+ status = acpi_tb_find_rsdp (&table_info, flags);
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "RSDP structure not found, %s Flags=%X\n",
+ acpi_format_exception (status), flags));
+ return_ACPI_STATUS (AE_NO_ACPI_TABLES);
+ }
+
+ rsdp_address->pointer_type = ACPI_PHYSICAL_POINTER;
+ rsdp_address->pointer.physical = table_info.physical_address;
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_scan_memory_for_rsdp
+ *
+ * PARAMETERS: start_address - Starting pointer for search
+ * Length - Maximum length to search
+ *
+ * RETURN: Pointer to the RSDP if found, otherwise NULL.
+ *
+ * DESCRIPTION: Search a block of memory for the RSDP signature
+ *
+ ******************************************************************************/
+
+u8 *
+acpi_tb_scan_memory_for_rsdp (
+ u8 *start_address,
+ u32 length)
+{
+ u8 *mem_rover;
+ u8 *end_address;
+ u8 checksum;
+
+
+ ACPI_FUNCTION_TRACE ("tb_scan_memory_for_rsdp");
+
+
+ end_address = start_address + length;
+
+ /* Search from given start address for the requested length */
+
+ for (mem_rover = start_address; mem_rover < end_address;
+ mem_rover += ACPI_RSDP_SCAN_STEP) {
+ /* The signature and checksum must both be correct */
+
+ if (ACPI_STRNCMP ((char *) mem_rover, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) {
+ /* No signature match, keep looking */
+
+ continue;
+ }
+
+ /* Signature matches, check the appropriate checksum */
+
+ if ((ACPI_CAST_PTR (struct rsdp_descriptor, mem_rover))->revision < 2) {
+ /* ACPI version 1.0 */
+
+ checksum = acpi_tb_checksum (mem_rover, ACPI_RSDP_CHECKSUM_LENGTH);
+ }
+ else {
+ /* Post ACPI 1.0, use extended_checksum */
+
+ checksum = acpi_tb_checksum (mem_rover, ACPI_RSDP_XCHECKSUM_LENGTH);
+ }
+
+ if (checksum == 0) {
+ /* Checksum valid, we have found a valid RSDP */
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "RSDP located at physical address %p\n", mem_rover));
+ return_PTR (mem_rover);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "Found an RSDP at physical address %p, but it has a bad checksum\n",
+ mem_rover));
+ }
+
+ /* Searched entire block, no RSDP was found */
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "Searched entire block, no valid RSDP was found.\n"));
+ return_PTR (NULL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_find_rsdp
+ *
+ * PARAMETERS: *table_info - Where the table info is returned
+ * Flags - Current memory mode (logical vs.
+ * physical addressing)
+ *
+ * RETURN: Status, RSDP physical address
+ *
+ * DESCRIPTION: search lower 1_mbyte of memory for the root system descriptor
+ * pointer structure. If it is found, set *RSDP to point to it.
+ *
+ * NOTE1: The RSDp must be either in the first 1_k of the Extended
+ * BIOS Data Area or between E0000 and FFFFF (From ACPI Spec.)
+ * Only a 32-bit physical address is necessary.
+ *
+ * NOTE2: This function is always available, regardless of the
+ * initialization state of the rest of ACPI.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_find_rsdp (
+ struct acpi_table_desc *table_info,
+ u32 flags)
+{
+ u8 *table_ptr;
+ u8 *mem_rover;
+ u32 physical_address;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("tb_find_rsdp");
+
+
+ /*
+ * Scan supports either 1) Logical addressing or 2) Physical addressing
+ */
+ if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
+ /*
+ * 1a) Get the location of the EBDA
+ */
+ status = acpi_os_map_memory ((acpi_physical_address) ACPI_EBDA_PTR_LOCATION,
+ ACPI_EBDA_PTR_LENGTH,
+ (void *) &table_ptr);
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Could not map memory at %8.8X for length %X\n",
+ ACPI_EBDA_PTR_LOCATION, ACPI_EBDA_PTR_LENGTH));
+ return_ACPI_STATUS (status);
+ }
+
+ ACPI_MOVE_16_TO_32 (&physical_address, table_ptr);
+ physical_address <<= 4; /* Convert segment to physical address */
+ acpi_os_unmap_memory (table_ptr, ACPI_EBDA_PTR_LENGTH);
+
+ /* EBDA present? */
+
+ if (physical_address > 0x400) {
+ /*
+ * 1b) Search EBDA paragraphs (EBDa is required to be a minimum of 1_k length)
+ */
+ status = acpi_os_map_memory ((acpi_physical_address) physical_address,
+ ACPI_EBDA_WINDOW_SIZE,
+ (void *) &table_ptr);
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Could not map memory at %8.8X for length %X\n",
+ physical_address, ACPI_EBDA_WINDOW_SIZE));
+ return_ACPI_STATUS (status);
+ }
+
+ mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, ACPI_EBDA_WINDOW_SIZE);
+ acpi_os_unmap_memory (table_ptr, ACPI_EBDA_WINDOW_SIZE);
+
+ if (mem_rover) {
+ /* Found it, return the physical address */
+
+ physical_address += ACPI_PTR_DIFF (mem_rover, table_ptr);
+
+ table_info->physical_address = (acpi_physical_address) physical_address;
+ return_ACPI_STATUS (AE_OK);
+ }
+ }
+
+ /*
+ * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh
+ */
+ status = acpi_os_map_memory ((acpi_physical_address) ACPI_HI_RSDP_WINDOW_BASE,
+ ACPI_HI_RSDP_WINDOW_SIZE,
+ (void *) &table_ptr);
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Could not map memory at %8.8X for length %X\n",
+ ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE));
+ return_ACPI_STATUS (status);
+ }
+
+ mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
+ acpi_os_unmap_memory (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
+
+ if (mem_rover) {
+ /* Found it, return the physical address */
+
+ physical_address = ACPI_HI_RSDP_WINDOW_BASE + ACPI_PTR_DIFF (mem_rover, table_ptr);
+
+ table_info->physical_address = (acpi_physical_address) physical_address;
+ return_ACPI_STATUS (AE_OK);
+ }
+ }
+
+ /*
+ * Physical addressing
+ */
+ else {
+ /*
+ * 1a) Get the location of the EBDA
+ */
+ ACPI_MOVE_16_TO_32 (&physical_address, ACPI_EBDA_PTR_LOCATION);
+ physical_address <<= 4; /* Convert segment to physical address */
+
+ /* EBDA present? */
+
+ if (physical_address > 0x400) {
+ /*
+ * 1b) Search EBDA paragraphs (EBDa is required to be a minimum of 1_k length)
+ */
+ mem_rover = acpi_tb_scan_memory_for_rsdp (ACPI_PHYSADDR_TO_PTR (physical_address),
+ ACPI_EBDA_WINDOW_SIZE);
+ if (mem_rover) {
+ /* Found it, return the physical address */
+
+ table_info->physical_address = ACPI_TO_INTEGER (mem_rover);
+ return_ACPI_STATUS (AE_OK);
+ }
+ }
+
+ /*
+ * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh
+ */
+ mem_rover = acpi_tb_scan_memory_for_rsdp (ACPI_PHYSADDR_TO_PTR (ACPI_HI_RSDP_WINDOW_BASE),
+ ACPI_HI_RSDP_WINDOW_SIZE);
+ if (mem_rover) {
+ /* Found it, return the physical address */
+
+ table_info->physical_address = ACPI_TO_INTEGER (mem_rover);
+ return_ACPI_STATUS (AE_OK);
+ }
+ }
+
+ /* RSDP signature was not found */
+
+ return_ACPI_STATUS (AE_NOT_FOUND);
+}
+
+#endif
+