1 /*******************************************************************************
2 *
3 * Module Name: rsio - IO and DMA resource descriptors
4 *
5 ******************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2008, 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
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