1 /*******************************************************************************
2  *
3  * Module Name: rsio - IO and DMA resource descriptors
4  *
5  ******************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2012, Intel Corp.
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 
44 #include <acpi/acpi.h>
45 #include "accommon.h"
46 #include "acresrc.h"
47 
48 #define _COMPONENT          ACPI_RESOURCES
49 ACPI_MODULE_NAME("rsio")
50 
51 /*******************************************************************************
52  *
53  * acpi_rs_convert_io
54  *
55  ******************************************************************************/
56 struct acpi_rsconvert_info acpi_rs_convert_io[5] = {
57 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IO,
58 	 ACPI_RS_SIZE(struct acpi_resource_io),
59 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io)},
60 
61 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IO,
62 	 sizeof(struct aml_resource_io),
63 	 0},
64 
65 	/* Decode flag */
66 
67 	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.io.io_decode),
68 	 AML_OFFSET(io.flags),
69 	 0},
70 	/*
71 	 * These fields are contiguous in both the source and destination:
72 	 * Address Alignment
73 	 * Length
74 	 * Minimum Base Address
75 	 * Maximum Base Address
76 	 */
77 	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.io.alignment),
78 	 AML_OFFSET(io.alignment),
79 	 2},
80 
81 	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.io.minimum),
82 	 AML_OFFSET(io.minimum),
83 	 2}
84 };
85 
86 /*******************************************************************************
87  *
88  * acpi_rs_convert_fixed_io
89  *
90  ******************************************************************************/
91 
92 struct acpi_rsconvert_info acpi_rs_convert_fixed_io[4] = {
93 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_IO,
94 	 ACPI_RS_SIZE(struct acpi_resource_fixed_io),
95 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_io)},
96 
97 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_IO,
98 	 sizeof(struct aml_resource_fixed_io),
99 	 0},
100 	/*
101 	 * These fields are contiguous in both the source and destination:
102 	 * Base Address
103 	 * Length
104 	 */
105 	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_io.address_length),
106 	 AML_OFFSET(fixed_io.address_length),
107 	 1},
108 
109 	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_io.address),
110 	 AML_OFFSET(fixed_io.address),
111 	 1}
112 };
113 
114 /*******************************************************************************
115  *
116  * acpi_rs_convert_generic_reg
117  *
118  ******************************************************************************/
119 
120 struct acpi_rsconvert_info acpi_rs_convert_generic_reg[4] = {
121 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_GENERIC_REGISTER,
122 	 ACPI_RS_SIZE(struct acpi_resource_generic_register),
123 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_generic_reg)},
124 
125 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_GENERIC_REGISTER,
126 	 sizeof(struct aml_resource_generic_register),
127 	 0},
128 	/*
129 	 * These fields are contiguous in both the source and destination:
130 	 * Address Space ID
131 	 * Register Bit Width
132 	 * Register Bit Offset
133 	 * Access Size
134 	 */
135 	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.generic_reg.space_id),
136 	 AML_OFFSET(generic_reg.address_space_id),
137 	 4},
138 
139 	/* Get the Register Address */
140 
141 	{ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.generic_reg.address),
142 	 AML_OFFSET(generic_reg.address),
143 	 1}
144 };
145 
146 /*******************************************************************************
147  *
148  * acpi_rs_convert_end_dpf
149  *
150  ******************************************************************************/
151 
152 struct acpi_rsconvert_info acpi_rs_convert_end_dpf[2] = {
153 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_DEPENDENT,
154 	 ACPI_RS_SIZE_MIN,
155 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_dpf)},
156 
157 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_DEPENDENT,
158 	 sizeof(struct aml_resource_end_dependent),
159 	 0}
160 };
161 
162 /*******************************************************************************
163  *
164  * acpi_rs_convert_end_tag
165  *
166  ******************************************************************************/
167 
168 struct acpi_rsconvert_info acpi_rs_convert_end_tag[2] = {
169 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_TAG,
170 	 ACPI_RS_SIZE_MIN,
171 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_tag)},
172 
173 	/*
174 	 * Note: The checksum field is set to zero, meaning that the resource
175 	 * data is treated as if the checksum operation succeeded.
176 	 * (ACPI Spec 1.0b Section 6.4.2.8)
177 	 */
178 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_TAG,
179 	 sizeof(struct aml_resource_end_tag),
180 	 0}
181 };
182 
183 /*******************************************************************************
184  *
185  * acpi_rs_get_start_dpf
186  *
187  ******************************************************************************/
188 
189 struct acpi_rsconvert_info acpi_rs_get_start_dpf[6] = {
190 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_START_DEPENDENT,
191 	 ACPI_RS_SIZE(struct acpi_resource_start_dependent),
192 	 ACPI_RSC_TABLE_SIZE(acpi_rs_get_start_dpf)},
193 
194 	/* Defaults for Compatibility and Performance priorities */
195 
196 	{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
197 	 ACPI_ACCEPTABLE_CONFIGURATION,
198 	 2},
199 
200 	/* Get the descriptor length (0 or 1 for Start Dpf descriptor) */
201 
202 	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
203 	 AML_OFFSET(start_dpf.descriptor_type),
204 	 0},
205 
206 	/* All done if there is no flag byte present in the descriptor */
207 
208 	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 1},
209 
210 	/* Flag byte is present, get the flags */
211 
212 	{ACPI_RSC_2BITFLAG,
213 	 ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
214 	 AML_OFFSET(start_dpf.flags),
215 	 0},
216 
217 	{ACPI_RSC_2BITFLAG,
218 	 ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
219 	 AML_OFFSET(start_dpf.flags),
220 	 2}
221 };
222 
223 /*******************************************************************************
224  *
225  * acpi_rs_set_start_dpf
226  *
227  ******************************************************************************/
228 
229 struct acpi_rsconvert_info acpi_rs_set_start_dpf[10] = {
230 	/* Start with a default descriptor of length 1 */
231 
232 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_START_DEPENDENT,
233 	 sizeof(struct aml_resource_start_dependent),
234 	 ACPI_RSC_TABLE_SIZE(acpi_rs_set_start_dpf)},
235 
236 	/* Set the default flag values */
237 
238 	{ACPI_RSC_2BITFLAG,
239 	 ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
240 	 AML_OFFSET(start_dpf.flags),
241 	 0},
242 
243 	{ACPI_RSC_2BITFLAG,
244 	 ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
245 	 AML_OFFSET(start_dpf.flags),
246 	 2},
247 	/*
248 	 * All done if the output descriptor length is required to be 1
249 	 * (i.e., optimization to 0 bytes cannot be attempted)
250 	 */
251 	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
252 	 ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
253 	 1},
254 
255 	/* Set length to 0 bytes (no flags byte) */
256 
257 	{ACPI_RSC_LENGTH, 0, 0,
258 	 sizeof(struct aml_resource_start_dependent_noprio)},
259 
260 	/*
261 	 * All done if the output descriptor length is required to be 0.
262 	 *
263 	 * TBD: Perhaps we should check for error if input flags are not
264 	 * compatible with a 0-byte descriptor.
265 	 */
266 	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
267 	 ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
268 	 0},
269 
270 	/* Reset length to 1 byte (descriptor with flags byte) */
271 
272 	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_start_dependent)},
273 
274 	/*
275 	 * All done if flags byte is necessary -- if either priority value
276 	 * is not ACPI_ACCEPTABLE_CONFIGURATION
277 	 */
278 	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
279 	 ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
280 	 ACPI_ACCEPTABLE_CONFIGURATION},
281 
282 	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
283 	 ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
284 	 ACPI_ACCEPTABLE_CONFIGURATION},
285 
286 	/* Flag byte is not necessary */
287 
288 	{ACPI_RSC_LENGTH, 0, 0,
289 	 sizeof(struct aml_resource_start_dependent_noprio)}
290 };
291