1 files changed, 437 insertions, 0 deletions

diff --git a/drivers/acpi/resources/rsxface.c b/drivers/acpi/resources/rsxface.c
new file mode 100644
index 000000000000..a9cdcbeb3432
--- /dev/null
+++ b/drivers/acpi/resources/rsxface.c
@@ -0,0 +1,437 @@
+/*******************************************************************************
+ *
+ * Module Name: rsxface - Public interfaces to the resource manager
+ *
+ ******************************************************************************/
+
+/*
+ * 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/acresrc.h>
+
+#define _COMPONENT          ACPI_RESOURCES
+         ACPI_MODULE_NAME    ("rsxface")
+
+
+/*******************************************************************************
+ *
+ * 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
+ *                                current resources for the device
+ *
+ * RETURN:      Status
+ *
+ * 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.
+ *
+ *              If the function fails an appropriate status will be returned
+ *              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.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_get_irq_routing_table (
+        acpi_handle                     device_handle,
+        struct acpi_buffer              *ret_buffer)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_get_irq_routing_table ");
+
+
+        /*
+         * Must have a valid handle and buffer, So we have to have a handle
+         * and a return buffer structure, and if there is a non-zero buffer length
+         * 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) {
+                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);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_get_current_resources
+ *
+ * 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
+ *                                current resources for the device
+ *
+ * RETURN:      Status
+ *
+ * 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.
+ *
+ *              If the function fails an appropriate status will be returned
+ *              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.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_get_current_resources (
+        acpi_handle                     device_handle,
+        struct acpi_buffer              *ret_buffer)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_get_current_resources");
+
+
+        /*
+         * Must have a valid handle and buffer, So we have to have a handle
+         * and a return buffer structure, and if there is a non-zero buffer length
+         * 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) {
+                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);
+}
+EXPORT_SYMBOL(acpi_get_current_resources);
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_get_possible_resources
+ *
+ * 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
+ *                                resources for the device
+ *
+ * RETURN:      Status
+ *
+ * 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.
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the value of ret_buffer is undefined.
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+acpi_status
+acpi_get_possible_resources (
+        acpi_handle                     device_handle,
+        struct acpi_buffer              *ret_buffer)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_get_possible_resources");
+
+
+        /*
+         * Must have a valid handle and buffer, So we have to have a handle
+         * and a return buffer structure, and if there is a non-zero buffer length
+         * 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) {
+                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);
+}
+EXPORT_SYMBOL(acpi_get_possible_resources);
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+
+/*******************************************************************************
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+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;
+        struct acpi_resource                *buffer_end;
+
+
+        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);
+        }
+
+        /* Setup pointers */
+
+        resource  = (struct acpi_resource *) buffer.pointer;
+        buffer_end = ACPI_CAST_PTR (struct acpi_resource,
+                          ((u8 *) buffer.pointer + buffer.length));
+
+        /* Walk the resource list */
+
+        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;
+                }
+
+                /* Get the next resource descriptor */
+
+                resource = ACPI_NEXT_RESOURCE (resource);
+
+                /* Check for end-of-buffer */
+
+                if (resource >= buffer_end) {
+                        goto cleanup;
+                }
+        }
+
+cleanup:
+
+        acpi_os_free (buffer.pointer);
+        return_ACPI_STATUS (status);
+}
+EXPORT_SYMBOL(acpi_walk_resources);
+
+
+/*******************************************************************************
+ *
+ * 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
+ *                                resources to be set for the device
+ *
+ * RETURN:      Status
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_set_current_resources (
+        acpi_handle                     device_handle,
+        struct acpi_buffer              *in_buffer)
+{
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("acpi_set_current_resources");
+
+
+        /*
+         * Must have a valid handle and buffer
+         */
+        if ((!device_handle)      ||
+                (!in_buffer)          ||
+                (!in_buffer->pointer) ||
+                (!in_buffer->length)) {
+                return_ACPI_STATUS (AE_BAD_PARAMETER);
+        }
+
+        status = acpi_rs_set_srs_method_data (device_handle, in_buffer);
+        return_ACPI_STATUS (status);
+}
+EXPORT_SYMBOL(acpi_set_current_resources);
+
+
+#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);
+}
+EXPORT_SYMBOL(acpi_resource_to_address64);
+