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1da177e4 LT |
1 | /******************************************************************************* |
2 | * | |
3 | * Module Name: rsirq - IRQ resource descriptors | |
4 | * | |
5 | ******************************************************************************/ | |
6 | ||
7 | /* | |
75a44ce0 | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
1da177e4 LT |
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("rsirq") |
1da177e4 LT |
49 | |
50 | /******************************************************************************* | |
51 | * | |
0897831b | 52 | * acpi_rs_get_irq |
1da177e4 LT |
53 | * |
54 | ******************************************************************************/ | |
1d5b285d | 55 | struct acpi_rsconvert_info acpi_rs_get_irq[8] = { |
0897831b BM |
56 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IRQ, |
57 | ACPI_RS_SIZE(struct acpi_resource_irq), | |
58 | ACPI_RSC_TABLE_SIZE(acpi_rs_get_irq)}, | |
44f6c012 | 59 | |
50eca3eb | 60 | /* Get the IRQ mask (bytes 1:2) */ |
1da177e4 | 61 | |
0897831b BM |
62 | {ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]), |
63 | AML_OFFSET(irq.irq_mask), | |
64 | ACPI_RS_OFFSET(data.irq.interrupt_count)}, | |
65 | ||
66 | /* Set default flags (others are zero) */ | |
67 | ||
68 | {ACPI_RSC_SET8, ACPI_RS_OFFSET(data.irq.triggering), | |
69 | ACPI_EDGE_SENSITIVE, | |
70 | 1}, | |
71 | ||
1d5b285d BM |
72 | /* Get the descriptor length (2 or 3 for IRQ descriptor) */ |
73 | ||
74 | {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.irq.descriptor_length), | |
75 | AML_OFFSET(irq.descriptor_type), | |
76 | 0}, | |
77 | ||
0897831b BM |
78 | /* All done if no flag byte present in descriptor */ |
79 | ||
80 | {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 3}, | |
81 | ||
82 | /* Get flags: Triggering[0], Polarity[3], Sharing[4] */ | |
83 | ||
84 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering), | |
85 | AML_OFFSET(irq.flags), | |
86 | 0}, | |
87 | ||
88 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity), | |
89 | AML_OFFSET(irq.flags), | |
90 | 3}, | |
91 | ||
92 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable), | |
93 | AML_OFFSET(irq.flags), | |
94 | 4} | |
95 | }; | |
1da177e4 | 96 | |
1da177e4 LT |
97 | /******************************************************************************* |
98 | * | |
0897831b | 99 | * acpi_rs_set_irq |
1da177e4 LT |
100 | * |
101 | ******************************************************************************/ | |
102 | ||
1d5b285d BM |
103 | struct acpi_rsconvert_info acpi_rs_set_irq[13] = { |
104 | /* Start with a default descriptor of length 3 */ | |
105 | ||
0897831b BM |
106 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ, |
107 | sizeof(struct aml_resource_irq), | |
108 | ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)}, | |
1da177e4 | 109 | |
50eca3eb BM |
110 | /* Convert interrupt list to 16-bit IRQ bitmask */ |
111 | ||
0897831b BM |
112 | {ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]), |
113 | AML_OFFSET(irq.irq_mask), | |
114 | ACPI_RS_OFFSET(data.irq.interrupt_count)}, | |
115 | ||
1d5b285d | 116 | /* Set the flags byte */ |
50eca3eb | 117 | |
0897831b BM |
118 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering), |
119 | AML_OFFSET(irq.flags), | |
120 | 0}, | |
50eca3eb | 121 | |
0897831b BM |
122 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity), |
123 | AML_OFFSET(irq.flags), | |
124 | 3}, | |
1da177e4 | 125 | |
0897831b BM |
126 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable), |
127 | AML_OFFSET(irq.flags), | |
128 | 4}, | |
1d5b285d BM |
129 | |
130 | /* | |
131 | * All done if the output descriptor length is required to be 3 | |
132 | * (i.e., optimization to 2 bytes cannot be attempted) | |
133 | */ | |
134 | {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, | |
135 | ACPI_RS_OFFSET(data.irq.descriptor_length), | |
136 | 3}, | |
137 | ||
138 | /* Set length to 2 bytes (no flags byte) */ | |
139 | ||
140 | {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}, | |
141 | ||
142 | /* | |
143 | * All done if the output descriptor length is required to be 2. | |
144 | * | |
145 | * TBD: Perhaps we should check for error if input flags are not | |
146 | * compatible with a 2-byte descriptor. | |
147 | */ | |
148 | {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, | |
149 | ACPI_RS_OFFSET(data.irq.descriptor_length), | |
150 | 2}, | |
151 | ||
152 | /* Reset length to 3 bytes (descriptor with flags byte) */ | |
153 | ||
154 | {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)}, | |
155 | ||
1da177e4 | 156 | /* |
0897831b BM |
157 | * Check if the flags byte is necessary. Not needed if the flags are: |
158 | * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE | |
1da177e4 | 159 | */ |
0897831b BM |
160 | {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE, |
161 | ACPI_RS_OFFSET(data.irq.triggering), | |
162 | ACPI_EDGE_SENSITIVE}, | |
44f6c012 | 163 | |
0897831b BM |
164 | {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE, |
165 | ACPI_RS_OFFSET(data.irq.polarity), | |
166 | ACPI_ACTIVE_HIGH}, | |
1da177e4 | 167 | |
0897831b BM |
168 | {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE, |
169 | ACPI_RS_OFFSET(data.irq.sharable), | |
170 | ACPI_EXCLUSIVE}, | |
1da177e4 | 171 | |
1d5b285d | 172 | /* We can optimize to a 2-byte irq_no_flags() descriptor */ |
44f6c012 | 173 | |
0897831b BM |
174 | {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)} |
175 | }; | |
1da177e4 | 176 | |
1da177e4 LT |
177 | /******************************************************************************* |
178 | * | |
0897831b | 179 | * acpi_rs_convert_ext_irq |
1da177e4 LT |
180 | * |
181 | ******************************************************************************/ | |
182 | ||
0897831b BM |
183 | struct acpi_rsconvert_info acpi_rs_convert_ext_irq[9] = { |
184 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_IRQ, | |
185 | ACPI_RS_SIZE(struct acpi_resource_extended_irq), | |
186 | ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_irq)}, | |
1da177e4 | 187 | |
0897831b BM |
188 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_IRQ, |
189 | sizeof(struct aml_resource_extended_irq), | |
190 | 0}, | |
1da177e4 | 191 | |
0897831b | 192 | /* Flag bits */ |
44f6c012 | 193 | |
0897831b BM |
194 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.producer_consumer), |
195 | AML_OFFSET(extended_irq.flags), | |
196 | 0}, | |
1da177e4 | 197 | |
0897831b BM |
198 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.triggering), |
199 | AML_OFFSET(extended_irq.flags), | |
200 | 1}, | |
50eca3eb | 201 | |
0897831b BM |
202 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.polarity), |
203 | AML_OFFSET(extended_irq.flags), | |
204 | 2}, | |
1da177e4 | 205 | |
0897831b BM |
206 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.sharable), |
207 | AML_OFFSET(extended_irq.flags), | |
208 | 3}, | |
1da177e4 | 209 | |
0897831b | 210 | /* IRQ Table length (Byte4) */ |
44f6c012 | 211 | |
0897831b BM |
212 | {ACPI_RSC_COUNT, ACPI_RS_OFFSET(data.extended_irq.interrupt_count), |
213 | AML_OFFSET(extended_irq.interrupt_count), | |
214 | sizeof(u32)} | |
215 | , | |
1da177e4 | 216 | |
0897831b | 217 | /* Copy every IRQ in the table, each is 32 bits */ |
44f6c012 | 218 | |
0897831b BM |
219 | {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.extended_irq.interrupts[0]), |
220 | AML_OFFSET(extended_irq.interrupts[0]), | |
221 | 0} | |
222 | , | |
1da177e4 | 223 | |
0897831b | 224 | /* Optional resource_source (Index and String) */ |
1da177e4 | 225 | |
0897831b BM |
226 | {ACPI_RSC_SOURCEX, ACPI_RS_OFFSET(data.extended_irq.resource_source), |
227 | ACPI_RS_OFFSET(data.extended_irq.interrupts[0]), | |
228 | sizeof(struct aml_resource_extended_irq)} | |
229 | }; | |
1da177e4 | 230 | |
1da177e4 LT |
231 | /******************************************************************************* |
232 | * | |
0897831b | 233 | * acpi_rs_convert_dma |
1da177e4 LT |
234 | * |
235 | ******************************************************************************/ | |
236 | ||
0897831b BM |
237 | struct acpi_rsconvert_info acpi_rs_convert_dma[6] = { |
238 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_DMA, | |
239 | ACPI_RS_SIZE(struct acpi_resource_dma), | |
240 | ACPI_RSC_TABLE_SIZE(acpi_rs_convert_dma)}, | |
1da177e4 | 241 | |
0897831b BM |
242 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_DMA, |
243 | sizeof(struct aml_resource_dma), | |
244 | 0}, | |
44f6c012 | 245 | |
0897831b | 246 | /* Flags: transfer preference, bus mastering, channel speed */ |
1da177e4 | 247 | |
0897831b BM |
248 | {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.transfer), |
249 | AML_OFFSET(dma.flags), | |
250 | 0}, | |
44f6c012 | 251 | |
0897831b BM |
252 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.dma.bus_master), |
253 | AML_OFFSET(dma.flags), | |
254 | 2}, | |
1da177e4 | 255 | |
0897831b BM |
256 | {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.type), |
257 | AML_OFFSET(dma.flags), | |
258 | 5}, | |
44f6c012 | 259 | |
0897831b | 260 | /* DMA channel mask bits */ |
1da177e4 | 261 | |
0897831b BM |
262 | {ACPI_RSC_BITMASK, ACPI_RS_OFFSET(data.dma.channels[0]), |
263 | AML_OFFSET(dma.dma_channel_mask), | |
264 | ACPI_RS_OFFSET(data.dma.channel_count)} | |
265 | }; |