1 files changed, 545 insertions, 0 deletions

diff --git a/drivers/acpi/resources/rsio.c b/drivers/acpi/resources/rsio.c
new file mode 100644
index 000000000000..972c746d37e4
--- /dev/null
+++ b/drivers/acpi/resources/rsio.c
@@ -0,0 +1,545 @@
+/*******************************************************************************
+ *
+ * Module Name: rsio - IO and DMA resource descriptors
+ *
+ ******************************************************************************/
+
+/*
+ * 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/acresrc.h>
+
+#define _COMPONENT          ACPI_RESOURCES
+         ACPI_MODULE_NAME    ("rsio")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_io_resource
+ *
+ * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
+ *                                        stream
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        consumed the byte_stream_buffer is
+ *                                        returned
+ *              output_buffer           - Pointer to the return data buffer
+ *              structure_size          - Pointer to where the number of bytes
+ *                                        in the return data struct is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the resource byte stream and fill out the appropriate
+ *              structure pointed to by the output_buffer. Return the
+ *              number of bytes consumed from the byte stream.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_io_resource (
+        u8                              *byte_stream_buffer,
+        acpi_size                       *bytes_consumed,
+        u8                              **output_buffer,
+        acpi_size                       *structure_size)
+{
+        u8                              *buffer = byte_stream_buffer;
+        struct acpi_resource            *output_struct = (void *) *output_buffer;
+        u16                             temp16 = 0;
+        u8                              temp8 = 0;
+        acpi_size                       struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io);
+
+
+        ACPI_FUNCTION_TRACE ("rs_io_resource");
+
+
+        /*
+         * The number of bytes consumed are Constant
+         */
+        *bytes_consumed = 8;
+
+        output_struct->id = ACPI_RSTYPE_IO;
+
+        /*
+         * Check Decode
+         */
+        buffer += 1;
+        temp8 = *buffer;
+
+        output_struct->data.io.io_decode = temp8 & 0x01;
+
+        /*
+         * Check min_base Address
+         */
+        buffer += 1;
+        ACPI_MOVE_16_TO_16 (&temp16, buffer);
+
+        output_struct->data.io.min_base_address = temp16;
+
+        /*
+         * Check max_base Address
+         */
+        buffer += 2;
+        ACPI_MOVE_16_TO_16 (&temp16, buffer);
+
+        output_struct->data.io.max_base_address = temp16;
+
+        /*
+         * Check Base alignment
+         */
+        buffer += 2;
+        temp8 = *buffer;
+
+        output_struct->data.io.alignment = temp8;
+
+        /*
+         * Check range_length
+         */
+        buffer += 1;
+        temp8 = *buffer;
+
+        output_struct->data.io.range_length = temp8;
+
+        /*
+         * Set the Length parameter
+         */
+        output_struct->length = (u32) struct_size;
+
+        /*
+         * Return the final size of the structure
+         */
+        *structure_size = struct_size;
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_fixed_io_resource
+ *
+ * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
+ *                                        stream
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        consumed the byte_stream_buffer is
+ *                                        returned
+ *              output_buffer           - Pointer to the return data buffer
+ *              structure_size          - Pointer to where the number of bytes
+ *                                        in the return data struct is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the resource byte stream and fill out the appropriate
+ *              structure pointed to by the output_buffer. Return the
+ *              number of bytes consumed from the byte stream.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_fixed_io_resource (
+        u8                              *byte_stream_buffer,
+        acpi_size                       *bytes_consumed,
+        u8                              **output_buffer,
+        acpi_size                       *structure_size)
+{
+        u8                              *buffer = byte_stream_buffer;
+        struct acpi_resource            *output_struct = (void *) *output_buffer;
+        u16                             temp16 = 0;
+        u8                              temp8 = 0;
+        acpi_size                       struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_io);
+
+
+        ACPI_FUNCTION_TRACE ("rs_fixed_io_resource");
+
+
+        /*
+         * The number of bytes consumed are Constant
+         */
+        *bytes_consumed = 4;
+
+        output_struct->id = ACPI_RSTYPE_FIXED_IO;
+
+        /*
+         * Check Range Base Address
+         */
+        buffer += 1;
+        ACPI_MOVE_16_TO_16 (&temp16, buffer);
+
+        output_struct->data.fixed_io.base_address = temp16;
+
+        /*
+         * Check range_length
+         */
+        buffer += 2;
+        temp8 = *buffer;
+
+        output_struct->data.fixed_io.range_length = temp8;
+
+        /*
+         * Set the Length parameter
+         */
+        output_struct->length = (u32) struct_size;
+
+        /*
+         * Return the final size of the structure
+         */
+        *structure_size = struct_size;
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_io_stream
+ *
+ * PARAMETERS:  linked_list             - Pointer to the resource linked list
+ *              output_buffer           - Pointer to the user's return buffer
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        used in the output_buffer is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the linked list resource structure and fills in the
+ *              the appropriate bytes in a byte stream
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_io_stream (
+        struct acpi_resource            *linked_list,
+        u8                              **output_buffer,
+        acpi_size                       *bytes_consumed)
+{
+        u8                              *buffer = *output_buffer;
+        u16                             temp16 = 0;
+        u8                              temp8 = 0;
+
+
+        ACPI_FUNCTION_TRACE ("rs_io_stream");
+
+
+        /*
+         * The descriptor field is static
+         */
+        *buffer = 0x47;
+        buffer += 1;
+
+        /*
+         * Io Information Byte
+         */
+        temp8 = (u8) (linked_list->data.io.io_decode & 0x01);
+
+        *buffer = temp8;
+        buffer += 1;
+
+        /*
+         * Set the Range minimum base address
+         */
+        temp16 = (u16) linked_list->data.io.min_base_address;
+
+        ACPI_MOVE_16_TO_16 (buffer, &temp16);
+        buffer += 2;
+
+        /*
+         * Set the Range maximum base address
+         */
+        temp16 = (u16) linked_list->data.io.max_base_address;
+
+        ACPI_MOVE_16_TO_16 (buffer, &temp16);
+        buffer += 2;
+
+        /*
+         * Set the base alignment
+         */
+        temp8 = (u8) linked_list->data.io.alignment;
+
+        *buffer = temp8;
+        buffer += 1;
+
+        /*
+         * Set the range length
+         */
+        temp8 = (u8) linked_list->data.io.range_length;
+
+        *buffer = temp8;
+        buffer += 1;
+
+        /*
+         * Return the number of bytes consumed in this operation
+         */
+        *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_fixed_io_stream
+ *
+ * PARAMETERS:  linked_list             - Pointer to the resource linked list
+ *              output_buffer           - Pointer to the user's return buffer
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        used in the output_buffer is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the linked list resource structure and fills in the
+ *              the appropriate bytes in a byte stream
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_fixed_io_stream (
+        struct acpi_resource            *linked_list,
+        u8                              **output_buffer,
+        acpi_size                       *bytes_consumed)
+{
+        u8                              *buffer = *output_buffer;
+        u16                             temp16 = 0;
+        u8                              temp8 = 0;
+
+
+        ACPI_FUNCTION_TRACE ("rs_fixed_io_stream");
+
+
+        /*
+         * The descriptor field is static
+         */
+        *buffer = 0x4B;
+
+        buffer += 1;
+
+        /*
+         * Set the Range base address
+         */
+        temp16 = (u16) linked_list->data.fixed_io.base_address;
+
+        ACPI_MOVE_16_TO_16 (buffer, &temp16);
+        buffer += 2;
+
+        /*
+         * Set the range length
+         */
+        temp8 = (u8) linked_list->data.fixed_io.range_length;
+
+        *buffer = temp8;
+        buffer += 1;
+
+        /*
+         * Return the number of bytes consumed in this operation
+         */
+        *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_dma_resource
+ *
+ * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
+ *                                        stream
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        consumed the byte_stream_buffer is
+ *                                        returned
+ *              output_buffer           - Pointer to the return data buffer
+ *              structure_size          - Pointer to where the number of bytes
+ *                                        in the return data struct is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the resource byte stream and fill out the appropriate
+ *              structure pointed to by the output_buffer. Return the
+ *              number of bytes consumed from the byte stream.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_dma_resource (
+        u8                              *byte_stream_buffer,
+        acpi_size                       *bytes_consumed,
+        u8                              **output_buffer,
+        acpi_size                       *structure_size)
+{
+        u8                              *buffer = byte_stream_buffer;
+        struct acpi_resource            *output_struct = (void *) *output_buffer;
+        u8                              temp8 = 0;
+        u8                              index;
+        u8                              i;
+        acpi_size                       struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_dma);
+
+
+        ACPI_FUNCTION_TRACE ("rs_dma_resource");
+
+
+        /*
+         * The number of bytes consumed are Constant
+         */
+        *bytes_consumed = 3;
+        output_struct->id = ACPI_RSTYPE_DMA;
+
+        /*
+         * Point to the 8-bits of Byte 1
+         */
+        buffer += 1;
+        temp8 = *buffer;
+
+        /* Decode the DMA channel bits */
+
+        for (i = 0, index = 0; index < 8; index++) {
+                if ((temp8 >> index) & 0x01) {
+                        output_struct->data.dma.channels[i] = index;
+                        i++;
+                }
+        }
+
+        /* Zero DMA channels is valid */
+
+        output_struct->data.dma.number_of_channels = i;
+        if (i > 0) {
+                /*
+                 * Calculate the structure size based upon the number of interrupts
+                 */
+                struct_size += ((acpi_size) i - 1) * 4;
+        }
+
+        /*
+         * Point to Byte 2
+         */
+        buffer += 1;
+        temp8 = *buffer;
+
+        /*
+         * Check for transfer preference (Bits[1:0])
+         */
+        output_struct->data.dma.transfer = temp8 & 0x03;
+
+        if (0x03 == output_struct->data.dma.transfer) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid DMA.Transfer preference (3)\n"));
+                return_ACPI_STATUS (AE_BAD_DATA);
+        }
+
+        /*
+         * Get bus master preference (Bit[2])
+         */
+        output_struct->data.dma.bus_master = (temp8 >> 2) & 0x01;
+
+        /*
+         * Get channel speed support (Bits[6:5])
+         */
+        output_struct->data.dma.type = (temp8 >> 5) & 0x03;
+
+        /*
+         * Set the Length parameter
+         */
+        output_struct->length = (u32) struct_size;
+
+        /*
+         * Return the final size of the structure
+         */
+        *structure_size = struct_size;
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_dma_stream
+ *
+ * PARAMETERS:  linked_list             - Pointer to the resource linked list
+ *              output_buffer           - Pointer to the user's return buffer
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        used in the output_buffer is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the linked list resource structure and fills in the
+ *              the appropriate bytes in a byte stream
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_dma_stream (
+        struct acpi_resource            *linked_list,
+        u8                              **output_buffer,
+        acpi_size                       *bytes_consumed)
+{
+        u8                              *buffer = *output_buffer;
+        u16                             temp16 = 0;
+        u8                              temp8 = 0;
+        u8                              index;
+
+
+        ACPI_FUNCTION_TRACE ("rs_dma_stream");
+
+
+        /*
+         * The descriptor field is static
+         */
+        *buffer = 0x2A;
+        buffer += 1;
+        temp8 = 0;
+
+        /*
+         * Loop through all of the Channels and set the mask bits
+         */
+        for (index = 0;
+                 index < linked_list->data.dma.number_of_channels;
+                 index++) {
+                temp16 = (u16) linked_list->data.dma.channels[index];
+                temp8 |= 0x1 << temp16;
+        }
+
+        *buffer = temp8;
+        buffer += 1;
+
+        /*
+         * Set the DMA Info
+         */
+        temp8 = (u8) ((linked_list->data.dma.type & 0x03) << 5);
+        temp8 |= ((linked_list->data.dma.bus_master & 0x01) << 2);
+        temp8 |= (linked_list->data.dma.transfer & 0x03);
+
+        *buffer = temp8;
+        buffer += 1;
+
+        /*
+         * Return the number of bytes consumed in this operation
+         */
+        *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
+        return_ACPI_STATUS (AE_OK);
+}
+