[mirror_ubuntu-zesty-kernel.git] / drivers / acpi / resources / rsio.c

/*******************************************************************************
 *
 * 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);
}
Commit	Line	Data
1da177e4 LT	1	/*******************************************************************************
	2	*
	3	* Module Name: rsio - IO and DMA resource descriptors
	4	*
	5	******************************************************************************/
	6
	7	/*
	8	* Copyright (C) 2000 - 2005, R. Byron Moore
	9	* All rights reserved.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions, and the following disclaimer,
	16	* without modification.
	17	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	18	* substantially similar to the "NO WARRANTY" disclaimer below
	19	* ("Disclaimer") and any redistribution must be conditioned upon
	20	* including a substantially similar Disclaimer requirement for further
	21	* binary redistribution.
	22	* 3. Neither the names of the above-listed copyright holders nor the names
	23	* of any contributors may be used to endorse or promote products derived
	24	* from this software without specific prior written permission.
	25	*
	26	* Alternatively, this software may be distributed under the terms of the
	27	* GNU General Public License ("GPL") version 2 as published by the Free
	28	* Software Foundation.
	29	*
	30	* NO WARRANTY
	31	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	32	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	33	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	34	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	35	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	36	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	37	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	38	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	39	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	40	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	41	* POSSIBILITY OF SUCH DAMAGES.
	42	*/
	43
1da177e4 LT	44	#include <acpi/acpi.h>
	45	#include <acpi/acresrc.h>
	46
	47	#define _COMPONENT ACPI_RESOURCES
4be44fcd	48	ACPI_MODULE_NAME("rsio")
1da177e4 LT	49
	50	/*******************************************************************************
	51	*
	52	* FUNCTION: acpi_rs_io_resource
	53	*
	54	* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
	55	* stream
	56	* bytes_consumed - Pointer to where the number of bytes
	57	* consumed the byte_stream_buffer is
	58	* returned
	59	* output_buffer - Pointer to the return data buffer
	60	* structure_size - Pointer to where the number of bytes
	61	* in the return data struct is returned
	62	*
	63	* RETURN: Status
	64	*
	65	* DESCRIPTION: Take the resource byte stream and fill out the appropriate
	66	* structure pointed to by the output_buffer. Return the
	67	* number of bytes consumed from the byte stream.
	68	*
	69	******************************************************************************/
1da177e4	70	acpi_status
4be44fcd LB	71	acpi_rs_io_resource(u8 * byte_stream_buffer,
	72	acpi_size * bytes_consumed,
	73	u8 ** output_buffer, acpi_size * structure_size)
1da177e4	74	{
4be44fcd LB	75	u8 *buffer = byte_stream_buffer;
	76	struct acpi_resource output_struct = (void )*output_buffer;
	77	u16 temp16 = 0;
	78	u8 temp8 = 0;
	79	acpi_size struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_io);
1da177e4	80
4be44fcd	81	ACPI_FUNCTION_TRACE("rs_io_resource");
1da177e4	82
44f6c012 RM	83	/* The number of bytes consumed are Constant */
44f6c012 RM	84
1da177e4 LT	85	*bytes_consumed = 8;
	86
	87	output_struct->id = ACPI_RSTYPE_IO;
	88
44f6c012 RM	89	/* Check Decode */
44f6c012 RM	90
1da177e4 LT	91	buffer += 1;
	92	temp8 = *buffer;
	93
	94	output_struct->data.io.io_decode = temp8 & 0x01;
	95
44f6c012 RM	96	/* Check min_base Address */
44f6c012 RM	97
1da177e4	98	buffer += 1;
4be44fcd	99	ACPI_MOVE_16_TO_16(&temp16, buffer);
1da177e4 LT	100
	101	output_struct->data.io.min_base_address = temp16;
	102
44f6c012 RM	103	/* Check max_base Address */
44f6c012 RM	104
1da177e4	105	buffer += 2;
4be44fcd	106	ACPI_MOVE_16_TO_16(&temp16, buffer);
1da177e4 LT	107
	108	output_struct->data.io.max_base_address = temp16;
	109
44f6c012 RM	110	/* Check Base alignment */
44f6c012 RM	111
1da177e4 LT	112	buffer += 2;
	113	temp8 = *buffer;
	114
	115	output_struct->data.io.alignment = temp8;
	116
44f6c012 RM	117	/* Check range_length */
44f6c012 RM	118
1da177e4 LT	119	buffer += 1;
	120	temp8 = *buffer;
	121
	122	output_struct->data.io.range_length = temp8;
	123
44f6c012 RM	124	/* Set the Length parameter */
44f6c012 RM	125
1da177e4 LT	126	output_struct->length = (u32) struct_size;
1da177e4 LT	127
44f6c012 RM	128	/* Return the final size of the structure */
44f6c012 RM	129
1da177e4	130	*structure_size = struct_size;
4be44fcd	131	return_ACPI_STATUS(AE_OK);
1da177e4 LT	132	}
1da177e4 LT	133
1da177e4 LT	134	/*******************************************************************************
	135	*
	136	* FUNCTION: acpi_rs_fixed_io_resource
	137	*
	138	* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
	139	* stream
	140	* bytes_consumed - Pointer to where the number of bytes
	141	* consumed the byte_stream_buffer is
	142	* returned
	143	* output_buffer - Pointer to the return data buffer
	144	* structure_size - Pointer to where the number of bytes
	145	* in the return data struct is returned
	146	*
	147	* RETURN: Status
	148	*
	149	* DESCRIPTION: Take the resource byte stream and fill out the appropriate
	150	* structure pointed to by the output_buffer. Return the
	151	* number of bytes consumed from the byte stream.
	152	*
	153	******************************************************************************/
	154
	155	acpi_status
4be44fcd LB	156	acpi_rs_fixed_io_resource(u8 * byte_stream_buffer,
	157	acpi_size * bytes_consumed,
	158	u8 ** output_buffer, acpi_size * structure_size)
1da177e4	159	{
4be44fcd LB	160	u8 *buffer = byte_stream_buffer;
	161	struct acpi_resource output_struct = (void )*output_buffer;
	162	u16 temp16 = 0;
	163	u8 temp8 = 0;
	164	acpi_size struct_size =
	165	ACPI_SIZEOF_RESOURCE(struct acpi_resource_fixed_io);
1da177e4	166
4be44fcd	167	ACPI_FUNCTION_TRACE("rs_fixed_io_resource");
1da177e4	168
44f6c012 RM	169	/* The number of bytes consumed are Constant */
44f6c012 RM	170
1da177e4 LT	171	*bytes_consumed = 4;
	172
	173	output_struct->id = ACPI_RSTYPE_FIXED_IO;
	174
44f6c012 RM	175	/* Check Range Base Address */
44f6c012 RM	176
1da177e4	177	buffer += 1;
4be44fcd	178	ACPI_MOVE_16_TO_16(&temp16, buffer);
1da177e4 LT	179
	180	output_struct->data.fixed_io.base_address = temp16;
	181
44f6c012 RM	182	/* Check range_length */
44f6c012 RM	183
1da177e4 LT	184	buffer += 2;
	185	temp8 = *buffer;
	186
	187	output_struct->data.fixed_io.range_length = temp8;
	188
44f6c012 RM	189	/* Set the Length parameter */
44f6c012 RM	190
1da177e4 LT	191	output_struct->length = (u32) struct_size;
1da177e4 LT	192
44f6c012 RM	193	/* Return the final size of the structure */
44f6c012 RM	194
1da177e4	195	*structure_size = struct_size;
4be44fcd	196	return_ACPI_STATUS(AE_OK);
1da177e4 LT	197	}
1da177e4 LT	198
1da177e4 LT	199	/*******************************************************************************
	200	*
	201	* FUNCTION: acpi_rs_io_stream
	202	*
	203	* PARAMETERS: linked_list - Pointer to the resource linked list
	204	* output_buffer - Pointer to the user's return buffer
	205	* bytes_consumed - Pointer to where the number of bytes
	206	* used in the output_buffer is returned
	207	*
	208	* RETURN: Status
	209	*
	210	* DESCRIPTION: Take the linked list resource structure and fills in the
	211	* the appropriate bytes in a byte stream
	212	*
	213	******************************************************************************/
	214
	215	acpi_status
4be44fcd LB	216	acpi_rs_io_stream(struct acpi_resource *linked_list,
4be44fcd LB	217	u8 ** output_buffer, acpi_size * bytes_consumed)
1da177e4	218	{
4be44fcd LB	219	u8 buffer = output_buffer;
	220	u16 temp16 = 0;
	221	u8 temp8 = 0;
1da177e4	222
4be44fcd	223	ACPI_FUNCTION_TRACE("rs_io_stream");
1da177e4	224
44f6c012 RM	225	/* The descriptor field is static */
44f6c012 RM	226
1da177e4 LT	227	*buffer = 0x47;
	228	buffer += 1;
	229
44f6c012 RM	230	/* Io Information Byte */
44f6c012 RM	231
1da177e4 LT	232	temp8 = (u8) (linked_list->data.io.io_decode & 0x01);
	233
	234	*buffer = temp8;
	235	buffer += 1;
	236
44f6c012 RM	237	/* Set the Range minimum base address */
44f6c012 RM	238
1da177e4 LT	239	temp16 = (u16) linked_list->data.io.min_base_address;
1da177e4 LT	240
4be44fcd	241	ACPI_MOVE_16_TO_16(buffer, &temp16);
1da177e4 LT	242	buffer += 2;
1da177e4 LT	243
44f6c012 RM	244	/* Set the Range maximum base address */
44f6c012 RM	245
1da177e4 LT	246	temp16 = (u16) linked_list->data.io.max_base_address;
1da177e4 LT	247
4be44fcd	248	ACPI_MOVE_16_TO_16(buffer, &temp16);
1da177e4 LT	249	buffer += 2;
1da177e4 LT	250
44f6c012 RM	251	/* Set the base alignment */
44f6c012 RM	252
1da177e4 LT	253	temp8 = (u8) linked_list->data.io.alignment;
	254
	255	*buffer = temp8;
	256	buffer += 1;
	257
44f6c012 RM	258	/* Set the range length */
44f6c012 RM	259
1da177e4 LT	260	temp8 = (u8) linked_list->data.io.range_length;
	261
	262	*buffer = temp8;
	263	buffer += 1;
	264
44f6c012 RM	265	/* Return the number of bytes consumed in this operation */
44f6c012 RM	266
4be44fcd LB	267	bytes_consumed = ACPI_PTR_DIFF(buffer, output_buffer);
4be44fcd LB	268	return_ACPI_STATUS(AE_OK);
1da177e4 LT	269	}
1da177e4 LT	270
1da177e4 LT	271	/*******************************************************************************
	272	*
	273	* FUNCTION: acpi_rs_fixed_io_stream
	274	*
	275	* PARAMETERS: linked_list - Pointer to the resource linked list
	276	* output_buffer - Pointer to the user's return buffer
	277	* bytes_consumed - Pointer to where the number of bytes
	278	* used in the output_buffer is returned
	279	*
	280	* RETURN: Status
	281	*
	282	* DESCRIPTION: Take the linked list resource structure and fills in the
	283	* the appropriate bytes in a byte stream
	284	*
	285	******************************************************************************/
	286
	287	acpi_status
4be44fcd LB	288	acpi_rs_fixed_io_stream(struct acpi_resource *linked_list,
4be44fcd LB	289	u8 ** output_buffer, acpi_size * bytes_consumed)
1da177e4	290	{
4be44fcd LB	291	u8 buffer = output_buffer;
	292	u16 temp16 = 0;
	293	u8 temp8 = 0;
1da177e4	294
4be44fcd	295	ACPI_FUNCTION_TRACE("rs_fixed_io_stream");
1da177e4	296
44f6c012 RM	297	/* The descriptor field is static */
44f6c012 RM	298
1da177e4 LT	299	*buffer = 0x4B;
	300
	301	buffer += 1;
	302
44f6c012 RM	303	/* Set the Range base address */
44f6c012 RM	304
1da177e4 LT	305	temp16 = (u16) linked_list->data.fixed_io.base_address;
1da177e4 LT	306
4be44fcd	307	ACPI_MOVE_16_TO_16(buffer, &temp16);
1da177e4 LT	308	buffer += 2;
1da177e4 LT	309
44f6c012 RM	310	/* Set the range length */
44f6c012 RM	311
1da177e4 LT	312	temp8 = (u8) linked_list->data.fixed_io.range_length;
	313
	314	*buffer = temp8;
	315	buffer += 1;
	316
44f6c012 RM	317	/* Return the number of bytes consumed in this operation */
44f6c012 RM	318
4be44fcd LB	319	bytes_consumed = ACPI_PTR_DIFF(buffer, output_buffer);
4be44fcd LB	320	return_ACPI_STATUS(AE_OK);
1da177e4 LT	321	}
1da177e4 LT	322
1da177e4 LT	323	/*******************************************************************************
	324	*
	325	* FUNCTION: acpi_rs_dma_resource
	326	*
	327	* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
	328	* stream
	329	* bytes_consumed - Pointer to where the number of bytes
	330	* consumed the byte_stream_buffer is
	331	* returned
	332	* output_buffer - Pointer to the return data buffer
	333	* structure_size - Pointer to where the number of bytes
	334	* in the return data struct is returned
	335	*
	336	* RETURN: Status
	337	*
	338	* DESCRIPTION: Take the resource byte stream and fill out the appropriate
	339	* structure pointed to by the output_buffer. Return the
	340	* number of bytes consumed from the byte stream.
	341	*
	342	******************************************************************************/
	343
	344	acpi_status
4be44fcd LB	345	acpi_rs_dma_resource(u8 * byte_stream_buffer,
	346	acpi_size * bytes_consumed,
	347	u8 ** output_buffer, acpi_size * structure_size)
1da177e4	348	{
4be44fcd LB	349	u8 *buffer = byte_stream_buffer;
	350	struct acpi_resource output_struct = (void )*output_buffer;
	351	u8 temp8 = 0;
	352	u8 index;
	353	u8 i;
	354	acpi_size struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_dma);
1da177e4	355
4be44fcd	356	ACPI_FUNCTION_TRACE("rs_dma_resource");
1da177e4	357
44f6c012 RM	358	/* The number of bytes consumed are Constant */
44f6c012 RM	359
1da177e4 LT	360	*bytes_consumed = 3;
	361	output_struct->id = ACPI_RSTYPE_DMA;
	362
44f6c012 RM	363	/* Point to the 8-bits of Byte 1 */
44f6c012 RM	364
1da177e4 LT	365	buffer += 1;
	366	temp8 = *buffer;
	367
	368	/* Decode the DMA channel bits */
	369
	370	for (i = 0, index = 0; index < 8; index++) {
	371	if ((temp8 >> index) & 0x01) {
	372	output_struct->data.dma.channels[i] = index;
	373	i++;
	374	}
	375	}
	376
	377	/* Zero DMA channels is valid */
	378
	379	output_struct->data.dma.number_of_channels = i;
	380	if (i > 0) {
44f6c012 RM	381	/* Calculate the structure size based upon the number of interrupts */
44f6c012 RM	382
1da177e4 LT	383	struct_size += ((acpi_size) i - 1) * 4;
	384	}
	385
44f6c012 RM	386	/* Point to Byte 2 */
44f6c012 RM	387
1da177e4 LT	388	buffer += 1;
	389	temp8 = *buffer;
	390
44f6c012 RM	391	/* Check for transfer preference (Bits[1:0]) */
44f6c012 RM	392
1da177e4 LT	393	output_struct->data.dma.transfer = temp8 & 0x03;
	394
	395	if (0x03 == output_struct->data.dma.transfer) {
4be44fcd LB	396	ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
	397	"Invalid DMA.Transfer preference (3)\n"));
	398	return_ACPI_STATUS(AE_BAD_DATA);
1da177e4 LT	399	}
1da177e4 LT	400
44f6c012 RM	401	/* Get bus master preference (Bit[2]) */
44f6c012 RM	402
1da177e4 LT	403	output_struct->data.dma.bus_master = (temp8 >> 2) & 0x01;
1da177e4 LT	404
44f6c012 RM	405	/* Get channel speed support (Bits[6:5]) */
44f6c012 RM	406
1da177e4 LT	407	output_struct->data.dma.type = (temp8 >> 5) & 0x03;
1da177e4 LT	408
44f6c012 RM	409	/* Set the Length parameter */
44f6c012 RM	410
1da177e4 LT	411	output_struct->length = (u32) struct_size;
1da177e4 LT	412
44f6c012 RM	413	/* Return the final size of the structure */
44f6c012 RM	414
1da177e4	415	*structure_size = struct_size;
4be44fcd	416	return_ACPI_STATUS(AE_OK);
1da177e4 LT	417	}
1da177e4 LT	418
1da177e4 LT	419	/*******************************************************************************
	420	*
	421	* FUNCTION: acpi_rs_dma_stream
	422	*
	423	* PARAMETERS: linked_list - Pointer to the resource linked list
	424	* output_buffer - Pointer to the user's return buffer
	425	* bytes_consumed - Pointer to where the number of bytes
	426	* used in the output_buffer is returned
	427	*
	428	* RETURN: Status
	429	*
	430	* DESCRIPTION: Take the linked list resource structure and fills in the
	431	* the appropriate bytes in a byte stream
	432	*
	433	******************************************************************************/
	434
	435	acpi_status
4be44fcd LB	436	acpi_rs_dma_stream(struct acpi_resource *linked_list,
4be44fcd LB	437	u8 ** output_buffer, acpi_size * bytes_consumed)
1da177e4	438	{
4be44fcd LB	439	u8 buffer = output_buffer;
	440	u16 temp16 = 0;
	441	u8 temp8 = 0;
	442	u8 index;
1da177e4	443
4be44fcd	444	ACPI_FUNCTION_TRACE("rs_dma_stream");
1da177e4	445
44f6c012 RM	446	/* The descriptor field is static */
44f6c012 RM	447
1da177e4 LT	448	*buffer = 0x2A;
	449	buffer += 1;
	450	temp8 = 0;
	451
44f6c012 RM	452	/* Loop through all of the Channels and set the mask bits */
44f6c012 RM	453
1da177e4	454	for (index = 0;
4be44fcd	455	index < linked_list->data.dma.number_of_channels; index++) {
1da177e4 LT	456	temp16 = (u16) linked_list->data.dma.channels[index];
	457	temp8 \|= 0x1 << temp16;
	458	}
	459
	460	*buffer = temp8;
	461	buffer += 1;
	462
44f6c012 RM	463	/* Set the DMA Info */
44f6c012 RM	464
1da177e4 LT	465	temp8 = (u8) ((linked_list->data.dma.type & 0x03) << 5);
	466	temp8 \|= ((linked_list->data.dma.bus_master & 0x01) << 2);
	467	temp8 \|= (linked_list->data.dma.transfer & 0x03);
	468
	469	*buffer = temp8;
	470	buffer += 1;
	471
44f6c012 RM	472	/* Return the number of bytes consumed in this operation */
44f6c012 RM	473
4be44fcd LB	474	bytes_consumed = ACPI_PTR_DIFF(buffer, output_buffer);
4be44fcd LB	475	return_ACPI_STATUS(AE_OK);
1da177e4	476	}