patch-2.4.22 linux-2.4.22/drivers/acpi/resources/rsxface.c

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diff -urN linux-2.4.21/drivers/acpi/resources/rsxface.c linux-2.4.22/drivers/acpi/resources/rsxface.c
@@ -1,44 +1,60 @@
 /*******************************************************************************
  *
  * Module Name: rsxface - Public interfaces to the resource manager
- *              $Revision: 15 $
  *
  ******************************************************************************/
 
 /*
- *  Copyright (C) 2000, 2001 R. Byron Moore
+ * Copyright (C) 2000 - 2003, R. Byron Moore
+ * All rights reserved.
  *
- *  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
+ * 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.h"
-#include "acinterp.h"
-#include "acnamesp.h"
-#include "acresrc.h"
+#include <acpi/acpi.h>
+#include <acpi/acresrc.h>
 
 #define _COMPONENT          ACPI_RESOURCES
-	 MODULE_NAME         ("rsxface")
+	 ACPI_MODULE_NAME    ("rsxface")
 
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_get_irq_routing_table
+ * FUNCTION:    acpi_get_irq_routing_table
  *
- * PARAMETERS:  Device_handle   - a handle to the Bus device we are querying
- *              Ret_buffer      - a pointer to a buffer to receive the
+ * PARAMETERS:  device_handle   - a handle to the Bus device we are querying
+ *              ret_buffer      - a pointer to a buffer to receive the
  *                                current resources for the device
  *
  * RETURN:      Status
@@ -46,25 +62,25 @@
  * DESCRIPTION: This function is called to get the IRQ routing table for a
  *              specific bus.  The caller must first acquire a handle for the
  *              desired bus.  The routine table is placed in the buffer pointed
- *              to by the Ret_buffer variable parameter.
+ *              to by the ret_buffer variable parameter.
  *
  *              If the function fails an appropriate status will be returned
- *              and the value of Ret_buffer is undefined.
+ *              and the value of ret_buffer is undefined.
  *
  *              This function attempts to execute the _PRT method contained in
- *              the object indicated by the passed Device_handle.
+ *              the object indicated by the passed device_handle.
  *
  ******************************************************************************/
 
 acpi_status
 acpi_get_irq_routing_table (
-	acpi_handle             device_handle,
-	acpi_buffer             *ret_buffer)
+	acpi_handle                     device_handle,
+	struct acpi_buffer              *ret_buffer)
 {
-	acpi_status             status;
+	acpi_status                     status;
 
 
-	FUNCTION_TRACE ("Acpi_get_irq_routing_table ");
+	ACPI_FUNCTION_TRACE ("acpi_get_irq_routing_table ");
 
 
 	/*
@@ -73,12 +89,15 @@
 	 * we also need a valid pointer in the buffer. If it's a zero buffer length,
 	 * we'll be returning the needed buffer size, so keep going.
 	 */
-	if ((!device_handle)        ||
-		(!ret_buffer)           ||
-		((!ret_buffer->pointer) && (ret_buffer->length))) {
+	if (!device_handle) {
 		return_ACPI_STATUS (AE_BAD_PARAMETER);
 	}
 
+	status = acpi_ut_validate_buffer (ret_buffer);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
 	status = acpi_rs_get_prt_method_data (device_handle, ret_buffer);
 	return_ACPI_STATUS (status);
 }
@@ -86,11 +105,11 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_get_current_resources
+ * FUNCTION:    acpi_get_current_resources
  *
- * PARAMETERS:  Device_handle   - a handle to the device object for the
+ * PARAMETERS:  device_handle   - a handle to the device object for the
  *                                device we are querying
- *              Ret_buffer      - a pointer to a buffer to receive the
+ *              ret_buffer      - a pointer to a buffer to receive the
  *                                current resources for the device
  *
  * RETURN:      Status
@@ -98,25 +117,25 @@
  * DESCRIPTION: This function is called to get the current resources for a
  *              specific device.  The caller must first acquire a handle for
  *              the desired device.  The resource data is placed in the buffer
- *              pointed to by the Ret_buffer variable parameter.
+ *              pointed to by the ret_buffer variable parameter.
  *
  *              If the function fails an appropriate status will be returned
- *              and the value of Ret_buffer is undefined.
+ *              and the value of ret_buffer is undefined.
  *
  *              This function attempts to execute the _CRS method contained in
- *              the object indicated by the passed Device_handle.
+ *              the object indicated by the passed device_handle.
  *
  ******************************************************************************/
 
 acpi_status
 acpi_get_current_resources (
-	acpi_handle             device_handle,
-	acpi_buffer             *ret_buffer)
+	acpi_handle                     device_handle,
+	struct acpi_buffer              *ret_buffer)
 {
-	acpi_status             status;
+	acpi_status                     status;
 
 
-	FUNCTION_TRACE ("Acpi_get_current_resources");
+	ACPI_FUNCTION_TRACE ("acpi_get_current_resources");
 
 
 	/*
@@ -125,12 +144,15 @@
 	 * we also need a valid pointer in the buffer. If it's a zero buffer length,
 	 * we'll be returning the needed buffer size, so keep going.
 	 */
-	if ((!device_handle)        ||
-		(!ret_buffer)           ||
-		((ret_buffer->length) && (!ret_buffer->pointer))) {
+	if (!device_handle) {
 		return_ACPI_STATUS (AE_BAD_PARAMETER);
 	}
 
+	status = acpi_ut_validate_buffer (ret_buffer);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
 	status = acpi_rs_get_crs_method_data (device_handle, ret_buffer);
 	return_ACPI_STATUS (status);
 }
@@ -138,11 +160,11 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_get_possible_resources
+ * FUNCTION:    acpi_get_possible_resources
  *
- * PARAMETERS:  Device_handle   - a handle to the device object for the
+ * PARAMETERS:  device_handle   - a handle to the device object for the
  *                                device we are querying
- *              Ret_buffer      - a pointer to a buffer to receive the
+ *              ret_buffer      - a pointer to a buffer to receive the
  *                                resources for the device
  *
  * RETURN:      Status
@@ -150,22 +172,22 @@
  * DESCRIPTION: This function is called to get a list of the possible resources
  *              for a specific device.  The caller must first acquire a handle
  *              for the desired device.  The resource data is placed in the
- *              buffer pointed to by the Ret_buffer variable.
+ *              buffer pointed to by the ret_buffer variable.
  *
  *              If the function fails an appropriate status will be returned
- *              and the value of Ret_buffer is undefined.
+ *              and the value of ret_buffer is undefined.
  *
  ******************************************************************************/
 
 acpi_status
 acpi_get_possible_resources (
-	acpi_handle             device_handle,
-	acpi_buffer             *ret_buffer)
+	acpi_handle                     device_handle,
+	struct acpi_buffer              *ret_buffer)
 {
-	acpi_status             status;
+	acpi_status                     status;
 
 
-	FUNCTION_TRACE ("Acpi_get_possible_resources");
+	ACPI_FUNCTION_TRACE ("acpi_get_possible_resources");
 
 
 	/*
@@ -174,12 +196,15 @@
 	 * we also need a valid pointer in the buffer. If it's a zero buffer length,
 	 * we'll be returning the needed buffer size, so keep going.
 	 */
-	if ((!device_handle)        ||
-		(!ret_buffer)           ||
-		((ret_buffer->length) && (!ret_buffer->pointer))) {
+	if (!device_handle) {
 		return_ACPI_STATUS (AE_BAD_PARAMETER);
 	}
 
+	status = acpi_ut_validate_buffer (ret_buffer);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
 	status = acpi_rs_get_prs_method_data (device_handle, ret_buffer);
 	return_ACPI_STATUS (status);
 }
@@ -187,11 +212,96 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_set_current_resources
+ * FUNCTION:    acpi_walk_resources
+ *
+ * PARAMETERS:  device_handle   - a handle to the device object for the
+ *                                device we are querying
+ *              Path            - method name of the resources we want
+ *                                (METHOD_NAME__CRS or METHOD_NAME__PRS)
+ *              user_function   - called for each resource
+ *              Context         - passed to user_function
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Retrieves the current or possible resource list for the
+ *              specified device.  The user_function is called once for
+ *              each resource in the list.
  *
- * PARAMETERS:  Device_handle   - a handle to the device object for the
+ ******************************************************************************/
+
+acpi_status
+acpi_walk_resources (
+	acpi_handle                             device_handle,
+	char                                    *path,
+	ACPI_WALK_RESOURCE_CALLBACK     user_function,
+	void                                    *context)
+{
+	acpi_status                         status;
+	struct acpi_buffer                  buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+	struct acpi_resource                *resource;
+
+
+	ACPI_FUNCTION_TRACE ("acpi_walk_resources");
+
+
+	if (!device_handle ||
+		(ACPI_STRNCMP (path, METHOD_NAME__CRS, sizeof (METHOD_NAME__CRS)) &&
+		 ACPI_STRNCMP (path, METHOD_NAME__PRS, sizeof (METHOD_NAME__PRS)))) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	status = acpi_rs_get_method_data (device_handle, path, &buffer);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	resource = (struct acpi_resource *) buffer.pointer;
+	for (;;) {
+		if (!resource || resource->id == ACPI_RSTYPE_END_TAG) {
+			break;
+		}
+
+		status = user_function (resource, context);
+
+		switch (status) {
+		case AE_OK:
+		case AE_CTRL_DEPTH:
+
+			/* Just keep going */
+			status = AE_OK;
+			break;
+
+		case AE_CTRL_TERMINATE:
+
+			/* Exit now, with OK stats */
+
+			status = AE_OK;
+			goto cleanup;
+
+		default:
+
+			/* All others are valid exceptions */
+
+			goto cleanup;
+		}
+
+		resource = ACPI_NEXT_RESOURCE (resource);
+	}
+
+cleanup:
+
+	acpi_os_free (buffer.pointer);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_set_current_resources
+ *
+ * PARAMETERS:  device_handle   - a handle to the device object for the
  *                                device we are changing the resources of
- *              In_buffer       - a pointer to a buffer containing the
+ *              in_buffer       - a pointer to a buffer containing the
  *                                resources to be set for the device
  *
  * RETURN:      Status
@@ -199,19 +309,19 @@
  * DESCRIPTION: This function is called to set the current resources for a
  *              specific device.  The caller must first acquire a handle for
  *              the desired device.  The resource data is passed to the routine
- *              the buffer pointed to by the In_buffer variable.
+ *              the buffer pointed to by the in_buffer variable.
  *
  ******************************************************************************/
 
 acpi_status
 acpi_set_current_resources (
-	acpi_handle             device_handle,
-	acpi_buffer             *in_buffer)
+	acpi_handle                     device_handle,
+	struct acpi_buffer              *in_buffer)
 {
-	acpi_status             status;
+	acpi_status                     status;
 
 
-	FUNCTION_TRACE ("Acpi_set_current_resources");
+	ACPI_FUNCTION_TRACE ("acpi_set_current_resources");
 
 
 	/*
@@ -227,3 +337,76 @@
 	status = acpi_rs_set_srs_method_data (device_handle, in_buffer);
 	return_ACPI_STATUS (status);
 }
+
+
+#define ACPI_COPY_FIELD(out, in, field)  ((out)->field = (in)->field)
+#define ACPI_COPY_ADDRESS(out, in)                      \
+	ACPI_COPY_FIELD(out, in, resource_type);             \
+	ACPI_COPY_FIELD(out, in, producer_consumer);         \
+	ACPI_COPY_FIELD(out, in, decode);                    \
+	ACPI_COPY_FIELD(out, in, min_address_fixed);         \
+	ACPI_COPY_FIELD(out, in, max_address_fixed);         \
+	ACPI_COPY_FIELD(out, in, attribute);                 \
+	ACPI_COPY_FIELD(out, in, granularity);               \
+	ACPI_COPY_FIELD(out, in, min_address_range);         \
+	ACPI_COPY_FIELD(out, in, max_address_range);         \
+	ACPI_COPY_FIELD(out, in, address_translation_offset); \
+	ACPI_COPY_FIELD(out, in, address_length);            \
+	ACPI_COPY_FIELD(out, in, resource_source);
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_resource_to_address64
+ *
+ * PARAMETERS:  resource                - Pointer to a resource
+ *              out                     - Pointer to the users's return
+ *                                        buffer (a struct
+ *                                        struct acpi_resource_address64)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: If the resource is an address16, address32, or address64,
+ *              copy it to the address64 return buffer.  This saves the
+ *              caller from having to duplicate code for different-sized
+ *              addresses.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_resource_to_address64 (
+	struct acpi_resource                *resource,
+	struct acpi_resource_address64      *out)
+{
+	struct acpi_resource_address16      *address16;
+	struct acpi_resource_address32      *address32;
+
+
+	switch (resource->id) {
+	case ACPI_RSTYPE_ADDRESS16:
+
+		address16 = (struct acpi_resource_address16 *) &resource->data;
+		ACPI_COPY_ADDRESS(out, address16);
+		break;
+
+
+	case ACPI_RSTYPE_ADDRESS32:
+
+		address32 = (struct acpi_resource_address32 *) &resource->data;
+		ACPI_COPY_ADDRESS(out, address32);
+		break;
+
+
+	case ACPI_RSTYPE_ADDRESS64:
+
+		/* Simple copy for 64 bit source */
+
+		ACPI_MEMCPY (out, &resource->data, sizeof (struct acpi_resource_address64));
+		break;
+
+
+	default:
+		return (AE_BAD_PARAMETER);
+	}
+
+	return (AE_OK);
+}

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