1 files changed, 448 insertions, 0 deletions
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
new file mode 100644
index 00000000000..7715043461c
--- /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);
+