ACPICA: Implement simplified Table Manager

The Table Manager component has been completely
redesigned and reimplemented. The new design is much
simpler, and reduces the overall code and data size of
the kernel-resident ACPICA by approximately 5%. Also,
it is now possible to obtain the ACPI tables very early
during kernel initialization, even before dynamic memory
management is initialized.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 0 insertions, 471 deletions

diff --git a/drivers/acpi/tables/tbget.c b/drivers/acpi/tables/tbget.c
deleted file mode 100644
index 11e2d4454e0..00000000000
--- a/drivers/acpi/tables/tbget.c
+++ /dev/null
@@ -1,471 +0,0 @@
-/******************************************************************************
- *
- * Module Name: tbget - ACPI Table get* routines
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2006, R. Byron Moore
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- *    substantially similar to the "NO WARRANTY" disclaimer below
- *    ("Disclaimer") and any redistribution must be conditioned upon
- *    including a substantially similar Disclaimer requirement for further
- *    binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- *    of any contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
-
-#include <acpi/acpi.h>
-#include <acpi/actables.h>
-
-#define _COMPONENT          ACPI_TABLES
-ACPI_MODULE_NAME("tbget")
-
-/* Local prototypes */
-static acpi_status
-acpi_tb_get_this_table(struct acpi_pointer *address,
-		       struct acpi_table_header *header,
-		       struct acpi_table_desc *table_info);
-
-static acpi_status
-acpi_tb_table_override(struct acpi_table_header *header,
-		       struct acpi_table_desc *table_info);
-
-/*******************************************************************************
- *
- * 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_EXCEPTION((AE_INFO, status,
-				"Could not get ACPI table (size %X)",
-				header.length));
-		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_ERROR((AE_INFO,
-				    "Could not map memory at %8.8X%8.8X for table header",
-				    ACPI_FORMAT_UINT64(address->pointer.
-						       physical)));
-			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_ERROR((AE_INFO, "Invalid address flags %X",
-			    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.
- *
- ******************************************************************************/
-
-static 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_EXCEPTION((AE_INFO, status,
-				"Could not override ACPI table"));
-		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_EXCEPTION((AE_INFO, status, "Could not copy ACPI table"));
-		return_ACPI_STATUS(status);
-	}
-
-	/* Copy the table info */
-
-	ACPI_INFO((AE_INFO, "Table [%4.4s] replaced by host OS",
-		   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.
- *
- ******************************************************************************/
-
-static 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);
-
-	/* Validate minimum length */
-
-	if (header->length < sizeof(struct acpi_table_header)) {
-		ACPI_ERROR((AE_INFO,
-			    "Table length (%X) is smaller than minimum (%zX)",
-			    header->length, sizeof(struct acpi_table_header)));
-
-		return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
-	}
-
-	/*
-	 * 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_ALLOCATE(header->length);
-		if (!full_table) {
-			ACPI_ERROR((AE_INFO,
-				    "Could not allocate table memory for [%4.4s] length %X",
-				    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,
-					    ACPI_CAST_PTR(void, &full_table));
-		if (ACPI_FAILURE(status)) {
-			ACPI_ERROR((AE_INFO,
-				    "Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X",
-				    header->signature,
-				    ACPI_FORMAT_UINT64(address->pointer.
-						       physical),
-				    header->length));
-			return (status);
-		}
-
-		/* Save allocation type */
-
-		allocation = ACPI_MEM_MAPPED;
-		break;
-
-	default:
-
-		ACPI_ERROR((AE_INFO, "Invalid address flags %X",
-			    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_ID_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
- *              return_table    - 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 **return_table)
-{
-	struct acpi_table_desc *table_desc;
-	u32 i;
-
-	ACPI_FUNCTION_TRACE(tb_get_table_ptr);
-
-	if (table_type > ACPI_TABLE_ID_MAX) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/* Check for instance out of range of the current table count */
-
-	if (instance > acpi_gbl_table_lists[table_type].count) {
-		return_ACPI_STATUS(AE_NOT_EXIST);
-	}
-
-	/*
-	 * Walk the list to get the desired table
-	 * Note: Instance is one-based
-	 */
-	table_desc = acpi_gbl_table_lists[table_type].next;
-	for (i = 1; i < instance; i++) {
-		table_desc = table_desc->next;
-	}
-
-	/* We are now pointing to the requested table's descriptor */
-
-	*return_table = table_desc->pointer;
-	return_ACPI_STATUS(AE_OK);
-}