1 files changed, 356 insertions, 0 deletions

diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/resources/rsutils.c
new file mode 100644
index 000000000000..ee9ce13c053d
--- /dev/null
+++ b/drivers/acpi/resources/rsutils.c
@@ -0,0 +1,356 @@
+/*******************************************************************************
+ *
+ * Module Name: rsutils - Utilities for 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 <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acresrc.h>
+
+
+#define _COMPONENT          ACPI_RESOURCES
+         ACPI_MODULE_NAME    ("rsutils")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_get_prt_method_data
+ *
+ * PARAMETERS:  Handle          - a handle to the containing object
+ *              ret_buffer      - a pointer to a buffer structure for the
+ *                                  results
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to get the _PRT value of an object
+ *              contained in an object specified by the handle passed in
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_get_prt_method_data (
+        acpi_handle                     handle,
+        struct acpi_buffer              *ret_buffer)
+{
+        union acpi_operand_object       *obj_desc;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("rs_get_prt_method_data");
+
+
+        /* Parameters guaranteed valid by caller */
+
+        /*
+         * Execute the method, no parameters
+         */
+        status = acpi_ut_evaluate_object (handle, "_PRT", ACPI_BTYPE_PACKAGE, &obj_desc);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Create a resource linked list from the byte stream buffer that comes
+         * back from the _CRS method execution.
+         */
+        status = acpi_rs_create_pci_routing_table (obj_desc, ret_buffer);
+
+        /* On exit, we must delete the object returned by evaluate_object */
+
+        acpi_ut_remove_reference (obj_desc);
+        return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_get_crs_method_data
+ *
+ * PARAMETERS:  Handle          - a handle to the containing object
+ *              ret_buffer      - a pointer to a buffer structure for the
+ *                                  results
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to get the _CRS value of an object
+ *              contained in an object specified by the handle passed in
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_get_crs_method_data (
+        acpi_handle                     handle,
+        struct acpi_buffer              *ret_buffer)
+{
+        union acpi_operand_object       *obj_desc;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("rs_get_crs_method_data");
+
+
+        /* Parameters guaranteed valid by caller */
+
+        /*
+         * Execute the method, no parameters
+         */
+        status = acpi_ut_evaluate_object (handle, "_CRS", ACPI_BTYPE_BUFFER, &obj_desc);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Make the call to create a resource linked list from the
+         * byte stream buffer that comes back from the _CRS method
+         * execution.
+         */
+        status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
+
+        /* on exit, we must delete the object returned by evaluate_object */
+
+        acpi_ut_remove_reference (obj_desc);
+        return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_get_prs_method_data
+ *
+ * PARAMETERS:  Handle          - a handle to the containing object
+ *              ret_buffer      - a pointer to a buffer structure for the
+ *                                  results
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to get the _PRS value of an object
+ *              contained in an object specified by the handle passed in
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+acpi_status
+acpi_rs_get_prs_method_data (
+        acpi_handle                     handle,
+        struct acpi_buffer              *ret_buffer)
+{
+        union acpi_operand_object       *obj_desc;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("rs_get_prs_method_data");
+
+
+        /* Parameters guaranteed valid by caller */
+
+        /*
+         * Execute the method, no parameters
+         */
+        status = acpi_ut_evaluate_object (handle, "_PRS", ACPI_BTYPE_BUFFER, &obj_desc);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Make the call to create a resource linked list from the
+         * byte stream buffer that comes back from the _CRS method
+         * execution.
+         */
+        status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
+
+        /* on exit, we must delete the object returned by evaluate_object */
+
+        acpi_ut_remove_reference (obj_desc);
+        return_ACPI_STATUS (status);
+}
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_get_method_data
+ *
+ * PARAMETERS:  Handle          - a handle to the containing object
+ *              ret_buffer      - a pointer to a buffer structure for the
+ *                                  results
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to get the _CRS or _PRS value of an
+ *              object contained in an object specified by the handle passed in
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_get_method_data (
+        acpi_handle                     handle,
+        char                            *path,
+        struct acpi_buffer              *ret_buffer)
+{
+        union acpi_operand_object       *obj_desc;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("rs_get_method_data");
+
+
+        /* Parameters guaranteed valid by caller */
+
+        /*
+         * Execute the method, no parameters
+         */
+        status = acpi_ut_evaluate_object (handle, path, ACPI_BTYPE_BUFFER, &obj_desc);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Make the call to create a resource linked list from the
+         * byte stream buffer that comes back from the method
+         * execution.
+         */
+        status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
+
+        /* On exit, we must delete the object returned by evaluate_object */
+
+        acpi_ut_remove_reference (obj_desc);
+        return_ACPI_STATUS (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_set_srs_method_data
+ *
+ * PARAMETERS:  Handle          - a handle to the containing object
+ *              in_buffer       - a pointer to a buffer structure of the
+ *                                  parameter
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to set the _SRS of an object contained
+ *              in an object specified by the handle passed in
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_set_srs_method_data (
+        acpi_handle                     handle,
+        struct acpi_buffer              *in_buffer)
+{
+        struct acpi_parameter_info      info;
+        union acpi_operand_object       *params[2];
+        acpi_status                     status;
+        struct acpi_buffer              buffer;
+
+
+        ACPI_FUNCTION_TRACE ("rs_set_srs_method_data");
+
+
+        /* Parameters guaranteed valid by caller */
+
+        /*
+         * The in_buffer parameter will point to a linked list of
+         * resource parameters.  It needs to be formatted into a
+         * byte stream to be sent in as an input parameter to _SRS
+         *
+         * Convert the linked list into a byte stream
+         */
+        buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+        status = acpi_rs_create_byte_stream (in_buffer->pointer, &buffer);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Init the param object
+         */
+        params[0] = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+        if (!params[0]) {
+                acpi_os_free (buffer.pointer);
+                return_ACPI_STATUS (AE_NO_MEMORY);
+        }
+
+        /*
+         * Set up the parameter object
+         */
+        params[0]->buffer.length  = (u32) buffer.length;
+        params[0]->buffer.pointer = buffer.pointer;
+        params[0]->common.flags   = AOPOBJ_DATA_VALID;
+        params[1] = NULL;
+
+        info.node = handle;
+        info.parameters = params;
+        info.parameter_type = ACPI_PARAM_ARGS;
+
+        /*
+         * Execute the method, no return value
+         */
+        status = acpi_ns_evaluate_relative ("_SRS", &info);
+        if (ACPI_SUCCESS (status)) {
+                /* Delete any return object (especially if implicit_return is enabled) */
+
+                if (info.return_object) {
+                        acpi_ut_remove_reference (info.return_object);
+                }
+        }
+
+        /*
+         * Clean up and return the status from acpi_ns_evaluate_relative
+         */
+        acpi_ut_remove_reference (params[0]);
+        return_ACPI_STATUS (status);
+}
+