ACPICA: create acpica/ directory
[linux-2.6.git] / drivers / acpi / acpica / rsio.c
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 <acpi/accommon.h>
46 #include <acpi/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 };