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, 307 deletions

diff --git a/drivers/acpi/tables/tbrsdt.c b/drivers/acpi/tables/tbrsdt.c
deleted file mode 100644
index 86a5fca9b739..000000000000
--- a/drivers/acpi/tables/tbrsdt.c
+++ /dev/null
@@ -1,307 +0,0 @@
-/******************************************************************************
- *
- * Module Name: tbrsdt - ACPI RSDT table utilities
- *
- *****************************************************************************/
-
-/*
- * 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("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),
-					    ACPI_CAST_PTR(void, &rsdp));
-		if (ACPI_FAILURE(status)) {
-			return_ACPI_STATUS(status);
-		}
-		break;
-
-	default:
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/* Verify RSDP signature and checksum */
-
-	status = acpi_tb_validate_rsdp(rsdp);
-	if (ACPI_FAILURE(status)) {
-		goto cleanup;
-	}
-
-	/* RSDP is ok. Init the table info */
-
-	table_info.pointer = ACPI_CAST_PTR(struct acpi_table_header, rsdp);
-	table_info.length = sizeof(struct rsdp_descriptor);
-
-	if (address->pointer_type == ACPI_PHYSICAL_POINTER) {
-		table_info.allocation = ACPI_MEM_MAPPED;
-	} else {
-		table_info.allocation = ACPI_MEM_NOT_ALLOCATED;
-	}
-
-	/* Save the table pointers and allocation info */
-
-	status = acpi_tb_init_table_descriptor(ACPI_TABLE_ID_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:  out_address         - Where the address is returned
- *
- * RETURN:      None, Address
- *
- * DESCRIPTION: Extract the address of either the RSDT or XSDT, depending on the
- *              version of the RSDP and whether the XSDT pointer is valid
- *
- ******************************************************************************/
-
-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;
-
-	/* Use XSDT if it is present */
-
-	if ((acpi_gbl_RSDP->revision >= 2) &&
-	    acpi_gbl_RSDP->xsdt_physical_address) {
-		out_address->pointer.value =
-		    acpi_gbl_RSDP->xsdt_physical_address;
-		acpi_gbl_root_table_type = ACPI_TABLE_TYPE_XSDT;
-	} else {
-		/* No XSDT, use the RSDT */
-
-		out_address->pointer.value =
-		    acpi_gbl_RSDP->rsdt_physical_address;
-		acpi_gbl_root_table_type = ACPI_TABLE_TYPE_RSDT;
-	}
-}
-
-/*******************************************************************************
- *
- * 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)
-{
-	char *signature;
-
-	ACPI_FUNCTION_ENTRY();
-
-	/* Validate minimum length */
-
-	if (table_ptr->length < sizeof(struct acpi_table_header)) {
-		ACPI_ERROR((AE_INFO,
-			    "RSDT/XSDT length (%X) is smaller than minimum (%zX)",
-			    table_ptr->length,
-			    sizeof(struct acpi_table_header)));
-
-		return (AE_INVALID_TABLE_LENGTH);
-	}
-
-	/* Search for appropriate signature, RSDT or XSDT */
-
-	if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
-		signature = RSDT_SIG;
-	} else {
-		signature = XSDT_SIG;
-	}
-
-	if (!ACPI_COMPARE_NAME(table_ptr->signature, signature)) {
-
-		/* Invalid RSDT or XSDT signature */
-
-		ACPI_ERROR((AE_INFO,
-			    "Invalid signature where RSDP indicates RSDT/XSDT should be located. RSDP:"));
-
-		ACPI_DUMP_BUFFER(acpi_gbl_RSDP, 20);
-
-		ACPI_ERROR((AE_INFO,
-			    "RSDT/XSDT signature at %X is invalid",
-			    acpi_gbl_RSDP->rsdt_physical_address));
-
-		if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
-			ACPI_ERROR((AE_INFO, "Looking for RSDT"));
-		} else {
-			ACPI_ERROR((AE_INFO, "Looking for XSDT"));
-		}
-
-		ACPI_DUMP_BUFFER(ACPI_CAST_PTR(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_ID_XSDT;
-	status = acpi_tb_get_table(&address, &table_info);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status,
-				"Could not get the RSDT/XSDT"));
-		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)) {
-		goto error_cleanup;
-	}
-
-	/* 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)) {
-		goto error_cleanup;
-	}
-
-	/* Save the table pointers and allocation info */
-
-	status = acpi_tb_init_table_descriptor(ACPI_TABLE_ID_XSDT, &table_info);
-	if (ACPI_FAILURE(status)) {
-		goto error_cleanup;
-	}
-
-	acpi_gbl_XSDT =
-	    ACPI_CAST_PTR(struct xsdt_descriptor, table_info.pointer);
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "XSDT located at %p\n", acpi_gbl_XSDT));
-	return_ACPI_STATUS(status);
-
-      error_cleanup:
-
-	/* Free table allocated by acpi_tb_get_table */
-
-	acpi_tb_delete_single_table(&table_info);
-
-	return_ACPI_STATUS(status);
-}