patch-2.4.22 linux-2.4.22/drivers/acpi/ospm/busmgr/bmutils.c

• Lines: 612
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/drivers/acpi/ospm/busmgr/bmutils.c
• Orig date: 2001-10-24 14:06:22.000000000 -0700

diff -urN linux-2.4.21/drivers/acpi/ospm/busmgr/bmutils.c linux-2.4.22/drivers/acpi/ospm/busmgr/bmutils.c
@@ -1,611 +0,0 @@
-/*****************************************************************************
- *
- * Module Name: bmutils.c
- *   $Revision: 43 $
- *
- *****************************************************************************/
-
-/*
- *  Copyright (C) 2000, 2001 Andrew Grover
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-
-#include <acpi.h>
-#include "bm.h"
-
-
-#define _COMPONENT		ACPI_BUS
-	MODULE_NAME		("bmutils")
-
-
-#ifdef ACPI_DEBUG
-#define DEBUG_EVAL_ERROR(l,h,p,s)    bm_print_eval_error(l,h,p,s)
-#else
-#define DEBUG_EVAL_ERROR(l,h,p,s)
-#endif
-
-
-/****************************************************************************
- *                            External Functions
- ****************************************************************************/
-
-/****************************************************************************
- *
- * FUNCTION:    bm_print_eval_error
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-void
-bm_print_eval_error (
-	u32                     debug_level,
-	acpi_handle             handle,
-	acpi_string             pathname,
-	acpi_status             status)
-{
-	acpi_buffer		buffer;
-	acpi_status		local_status;
-
-	PROC_NAME("bm_print_eval_error");
-
-	buffer.length = 256;
-	buffer.pointer = acpi_os_callocate(buffer.length);
-	if (!buffer.pointer) {
-		return;
-	}
-
-	local_status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
-	if (ACPI_FAILURE(local_status)) {
-		ACPI_DEBUG_PRINT((ACPI_DEBUG_LEVEL(debug_level), "Evaluate object [%p], %s\n", handle,
-			acpi_format_exception(status)));
-		return;
-	}
-
-	if (pathname) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate object [%s.%s], %s\n", (char*)buffer.pointer, pathname,
-			acpi_format_exception(status)));
-	}
-	else {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate object [%s], %s\n", (char*)buffer.pointer,
-			acpi_format_exception(status)));
-	}
-
-	acpi_os_free(buffer.pointer);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_copy_to_buffer
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_copy_to_buffer (
-	acpi_buffer             *buffer,
-	void                    *data,
-	u32                     length)
-{
-	FUNCTION_TRACE("bm_copy_to_buffer");
-
-	if (!buffer || (!buffer->pointer) || !data || (length == 0)) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	if (length > buffer->length) {
-		buffer->length = length;
-		return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
-	}
-
-	buffer->length = length;
-	MEMCPY(buffer->pointer, data, length);
-
-	return_ACPI_STATUS(AE_OK);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_cast_buffer
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_cast_buffer (
-	acpi_buffer             *buffer,
-	void                    **pointer,
-	u32                     length)
-{
-	FUNCTION_TRACE("bm_cast_buffer");
-
-	if (!buffer || !buffer->pointer || !pointer || length == 0) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	if (length > buffer->length) {
-		return_ACPI_STATUS(AE_BAD_DATA);
-	}
-
-	*pointer = buffer->pointer;
-
-	return_ACPI_STATUS(AE_OK);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_extract_package_data
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_extract_package_data (
-	acpi_object             *package,
-	acpi_buffer             *format,
-	acpi_buffer             *buffer)
-{
-	u32                     tail_offset = 0;
-	u32                     size_required = 0;
-	char			*format_string = NULL;
-	u32                     format_count = 0;
-	u32                     i = 0;
-	u8                      *head = NULL;
-	u8                      *tail = NULL;
-
-	FUNCTION_TRACE("bm_extract_package_data");
-
-	if (!package || (package->type != ACPI_TYPE_PACKAGE) || (package->package.count < 1)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'package' argument\n"));
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	if (!format || !format->pointer || (format->length < 1)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'format' argument\n"));
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	if (!buffer) {
-		ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'buffer' argument\n"));
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	format_count = (format->length/sizeof(char)) - 1;
-	if (format_count > package->package.count) {
-		ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Format specifies more objects [%d] than exist in package [%d].", format_count, package->package.count));
-		return_ACPI_STATUS(AE_BAD_DATA);
-	}
-
-	format_string = (char*)format->pointer;
-
-	/*
-	 * Calculate size_required.
-	 */
-	for (i=0; i<format_count; i++) {
-
-		acpi_object *element = &(package->package.elements[i]);
-
-		if (!element) {
-			return_ACPI_STATUS(AE_BAD_DATA);
-		}
-
-		switch (element->type) {
-
-		case ACPI_TYPE_INTEGER:
-			switch (format_string[i]) {
-			case 'N':
-				size_required += sizeof(acpi_integer);
-				tail_offset += sizeof(acpi_integer);
-				break;
-			case 'S':
-				size_required += sizeof(char*) + sizeof(acpi_integer) + sizeof(char);
-				tail_offset += sizeof(char*);
-				break;
-			default:
-				ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid package element [%d]: got number, expecing [%c].\n", i, format_string[i]));
-				return_ACPI_STATUS(AE_BAD_DATA);
-				break;
-			}
-			break;
-
-		case ACPI_TYPE_STRING:
-		case ACPI_TYPE_BUFFER:
-			switch (format_string[i]) {
-			case 'S':
-				size_required += sizeof(char*) + (element->string.length * sizeof(char)) + sizeof(char);
-				tail_offset += sizeof(char*);
-				break;
-			case 'B':
-				size_required += sizeof(u8*) + (element->buffer.length * sizeof(u8));
-				tail_offset += sizeof(u8*);
-				break;
-			default:
-				ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid package element [%d] got string/buffer, expecing [%c].\n", i, format_string[i]));
-				return_ACPI_STATUS(AE_BAD_DATA);
-				break;
-			}
-			break;
-
-		case ACPI_TYPE_PACKAGE:
-		default:
-			ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unsupported element at index=%d\n", i));
-			/* TBD: handle nested packages... */
-			return_ACPI_STATUS(AE_SUPPORT);
-			break;
-		}
-	}
-
-	/* 
-	 * Validate output buffer. 
-	 */
-	if (buffer->length < size_required) {
-		buffer->length = size_required;
-		return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
-	}
-	else if (buffer->length != size_required || !buffer->pointer) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	head = buffer->pointer;
-	tail = buffer->pointer + tail_offset;
-
-	/* 
-	 * Extract package data.
-	 */
-	for (i=0; i<format_count; i++) {
-
-		u8 **pointer = NULL;
-		acpi_object *element = &(package->package.elements[i]);
-
-		switch (element->type) {
-
-		case ACPI_TYPE_INTEGER:
-			switch (format_string[i]) {
-			case 'N':
-				*((acpi_integer*)head) = element->integer.value;
-				head += sizeof(acpi_integer);
-				break;
-			case 'S':
-				pointer = (u8**)head;
-				*pointer = tail;
-				*((acpi_integer*)tail) = element->integer.value;
-				head += sizeof(acpi_integer*);
-				tail += sizeof(acpi_integer);
-				/* NULL terminate string */
-				*tail = (char)0;
-				tail += sizeof(char);
-				break;
-			default:
-				/* Should never get here */
-				break;
-			}
-			break;
-
-		case ACPI_TYPE_STRING:
-		case ACPI_TYPE_BUFFER:
-			switch (format_string[i]) {
-			case 'S':
-				pointer = (u8**)head;
-				*pointer = tail;
-				memcpy(tail, element->string.pointer, element->string.length);
-				head += sizeof(char*);
-				tail += element->string.length * sizeof(char);
-				/* NULL terminate string */
-				*tail = (char)0;
-				tail += sizeof(char);
-				break;
-			case 'B':
-				pointer = (u8**)head;
-				*pointer = tail;
-				memcpy(tail, element->buffer.pointer, element->buffer.length);
-				head += sizeof(u8*);
-				tail += element->buffer.length * sizeof(u8);
-				break;
-			default:
-				/* Should never get here */
-				break;
-			}
-			break;
-
-		case ACPI_TYPE_PACKAGE:
-			/* TBD: handle nested packages... */
-		default:
-			/* Should never get here */
-			break;
-		}
-	}
-
-	return_ACPI_STATUS(AE_OK);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_evaluate_object
- *
- * PARAMETERS:
- *
- * RETURN:      AE_OK
- *              AE_BUFFER_OVERFLOW  Evaluated object returned data, but
- *                                  caller did not provide buffer.
- *
- * DESCRIPTION: Helper for acpi_evaluate_object that handles buffer
- *              allocation.  Note that the caller is responsible for
- *              freeing buffer->pointer!
- *
- ****************************************************************************/
-
-acpi_status
-bm_evaluate_object (
-	acpi_handle             handle,
-	acpi_string             pathname,
-	acpi_object_list        *arguments,
-	acpi_buffer             *buffer)
-{
-	acpi_status             status = AE_OK;
-
-	FUNCTION_TRACE("bm_evaluate_object");
-
-	/* If caller provided a buffer it must be unallocated/zero'd. */
-	if ((buffer) && (buffer->length != 0 || buffer->pointer)) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/*
-	 * Evalute Object:
-	 * ---------------
-	 * The first attempt is just to get the size of the object data
-	 * (that is unless there's no return data, e.g. _INI); the second
-	 * gets the data.
-	 */
-	status = acpi_evaluate_object(handle, pathname, arguments, buffer);
-	if (ACPI_SUCCESS(status)) {
-		return_ACPI_STATUS(status);
-	}
-	else if ((buffer) && (status == AE_BUFFER_OVERFLOW)) {
-
-		/* Gotta allocate -- CALLER MUST FREE! */
-		buffer->pointer = acpi_os_callocate(buffer->length);
-		if (!buffer->pointer) {
-			return_ACPI_STATUS(AE_NO_MEMORY);
-		}
-
-		/* Re-evaluate -- this time it should work */
-		status = acpi_evaluate_object(handle, pathname,
-			arguments, buffer);
-	}
-
-	if (ACPI_FAILURE(status)) {
-		if (status != AE_NOT_FOUND) {
-			DEBUG_EVAL_ERROR(ACPI_LV_WARN, handle, pathname,
-				status);
-		}
-		if (buffer && buffer->pointer) {
-			acpi_os_free(buffer->pointer);
-			buffer->pointer = NULL;
-			buffer->length = 0;
-		}
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_evaluate_simple_integer
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_evaluate_simple_integer (
-	acpi_handle             handle,
-	acpi_string             pathname,
-	u32                     *data)
-{
-	acpi_status             status = AE_OK;
-	acpi_object             *element = NULL;
-	acpi_buffer             buffer;
-
-	FUNCTION_TRACE("bm_evaluate_simple_integer");
-
-	if (!data) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	MEMSET(&buffer, 0, sizeof(acpi_buffer));
-
-	/*
-	 * Evaluate Object:
-	 * ----------------
-	 */
-	status = bm_evaluate_object(handle, pathname, NULL, &buffer);
-	if (ACPI_FAILURE(status)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "failed to evaluate object (%s)\n",
-			acpi_format_exception(status)));
-		goto end;
-	}
-
-	/*
-	 * Validate Data:
-	 * --------------
-	 */
-	status = bm_cast_buffer(&buffer, (void**)&element,
-		sizeof(acpi_object));
-	if (ACPI_FAILURE(status)) {
-		DEBUG_EVAL_ERROR(ACPI_LV_WARN, handle, pathname, status);
-		goto end;
-	}
-
-	if (element->type != ACPI_TYPE_INTEGER) {
-		status = AE_BAD_DATA;
-		DEBUG_EVAL_ERROR(ACPI_LV_WARN, handle, pathname, status);
-		goto end;
-	}
-
-	*data = element->integer.value;
-
-end:
-	acpi_os_free(buffer.pointer);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_evaluate_reference_list
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status  
-bm_evaluate_reference_list (
-	acpi_handle             handle,
-	acpi_string             pathname,
-	BM_HANDLE_LIST          *reference_list)
-{
-	acpi_status             status = AE_OK;
-	acpi_object             *package = NULL;
-	acpi_object             *element = NULL;
-	acpi_handle  		reference_handle = NULL;
-	acpi_buffer             buffer;
-	u32                     i = 0;
-
-	FUNCTION_TRACE("bm_evaluate_reference_list");
-
-	if (!reference_list) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	MEMSET(&buffer, 0, sizeof(acpi_buffer));
-
-	/*
-	 * Evaluate Object:
-	 * ----------------
-	 */
-	status = bm_evaluate_object(handle, pathname, NULL, &buffer);
-	if (ACPI_FAILURE(status)) {
-		goto end;
-	}
-
-	/*
-	 * Validate Package:
-	 * -----------------
-	 */
-	status = bm_cast_buffer(&buffer, (void**)&package,
-		sizeof(acpi_object));
-	if (ACPI_FAILURE(status)) {
-		DEBUG_EVAL_ERROR(ACPI_LV_WARN, handle, pathname, status);
-		goto end;
-	}
-
-	if (package->type != ACPI_TYPE_PACKAGE) {
-		status = AE_BAD_DATA;
-		DEBUG_EVAL_ERROR(ACPI_LV_WARN, handle, pathname, status);
-		goto end;
-	}
-
-	if (package->package.count > BM_HANDLES_MAX) {
-		package->package.count = BM_HANDLES_MAX;
-	}
-
-	/*
-	 * Parse Package Data:
-	 * -------------------
-	 */
-	for (i = 0; i < package->package.count; i++) {
-
-		element = &(package->package.elements[i]);
-
-		if (!element || (element->type != ACPI_TYPE_STRING)) {
-			status = AE_BAD_DATA;
-			ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid element in package (not a device reference).\n"));
-			DEBUG_EVAL_ERROR (ACPI_LV_WARN, handle, pathname, status);
-			break;
-		}
-
-		/*
-		 * Resolve reference string (e.g. "\_PR_.CPU_") to an
-		 * acpi_handle.
-		 */
-		status = acpi_get_handle(handle,
-			element->string.pointer, &reference_handle);
-		if (ACPI_FAILURE(status)) {
-			status = AE_BAD_DATA;
-			ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Unable to resolve device reference [%s].\n", element->string.pointer));
-			DEBUG_EVAL_ERROR (ACPI_LV_WARN, handle, pathname, status);
-			break;
-		}
-
-		/*
-		 * Resolve acpi_handle to BM_HANDLE.
-		 */
-		status = bm_get_handle(reference_handle,
-			&(reference_list->handles[i]));
-		if (ACPI_FAILURE(status)) {
-			status = AE_BAD_DATA;
-			ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Unable to resolve device reference for [%p].\n", reference_handle));
-			DEBUG_EVAL_ERROR (ACPI_LV_WARN, handle, pathname, status);
-			break;
-		}
-
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resolved reference [%s]->[%p]->[%02x]\n", element->string.pointer, reference_handle, reference_list->handles[i]));
-
-		(reference_list->count)++;
-	}
-
-end:
-	acpi_os_free(buffer.pointer);
-
-	return_ACPI_STATUS(status);
-}
-
-