1 /*******************************************************************************
2 *
3 * Module Name: rsirq - IRQ 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("rsirq")
50
51 /*******************************************************************************
52 *
53 * acpi_rs_get_irq
54 *
55 ******************************************************************************/
56 struct acpi_rsconvert_info acpi_rs_get_irq[8] = {
57 {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IRQ,
58 ACPI_RS_SIZE(struct acpi_resource_irq),
59 ACPI_RSC_TABLE_SIZE(acpi_rs_get_irq)},
60
61 /* Get the IRQ mask (bytes 1:2) */
62
63 {ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
64 AML_OFFSET(irq.irq_mask),
65 ACPI_RS_OFFSET(data.irq.interrupt_count)},
66
67 /* Set default flags (others are zero) */
68
69 {ACPI_RSC_SET8, ACPI_RS_OFFSET(data.irq.triggering),
70 ACPI_EDGE_SENSITIVE,
71 1},
72
73 /* Get the descriptor length (2 or 3 for IRQ descriptor) */
74
75 {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.irq.descriptor_length),
76 AML_OFFSET(irq.descriptor_type),
77 0},
78
79 /* All done if no flag byte present in descriptor */
80
81 {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 3},
82
83 /* Get flags: Triggering[0], Polarity[3], Sharing[4] */
84
85 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
86 AML_OFFSET(irq.flags),
87 0},
88
89 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
90 AML_OFFSET(irq.flags),
91 3},
92
93 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable),
94 AML_OFFSET(irq.flags),
95 4}
96 };
97
98 /*******************************************************************************
99 *
100 * acpi_rs_set_irq
101 *
102 ******************************************************************************/
103
104 struct acpi_rsconvert_info acpi_rs_set_irq[13] = {
105 /* Start with a default descriptor of length 3 */
106
107 {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ,
108 sizeof(struct aml_resource_irq),
109 ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)},
110
111 /* Convert interrupt list to 16-bit IRQ bitmask */
112
113 {ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
114 AML_OFFSET(irq.irq_mask),
115 ACPI_RS_OFFSET(data.irq.interrupt_count)},
116
117 /* Set the flags byte */
118
119 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
120 AML_OFFSET(irq.flags),
121 0},
122
123 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
124 AML_OFFSET(irq.flags),
125 3},
126
127 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable),
128 AML_OFFSET(irq.flags),
129 4},
130
131 /*
132 * All done if the output descriptor length is required to be 3
133 * (i.e., optimization to 2 bytes cannot be attempted)
134 */
135 {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
136 ACPI_RS_OFFSET(data.irq.descriptor_length),
137 3},
138
139 /* Set length to 2 bytes (no flags byte) */
140
141 {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)},
142
143 /*
144 * All done if the output descriptor length is required to be 2.
145 *
146 * TBD: Perhaps we should check for error if input flags are not
147 * compatible with a 2-byte descriptor.
148 */
149 {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
150 ACPI_RS_OFFSET(data.irq.descriptor_length),
151 2},
152
153 /* Reset length to 3 bytes (descriptor with flags byte) */
154
155 {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)},
156
157 /*
158 * Check if the flags byte is necessary. Not needed if the flags are:
159 * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
160 */
161 {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
162 ACPI_RS_OFFSET(data.irq.triggering),
163 ACPI_EDGE_SENSITIVE},
164
165 {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
166 ACPI_RS_OFFSET(data.irq.polarity),
167 ACPI_ACTIVE_HIGH},
168
169 {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
170 ACPI_RS_OFFSET(data.irq.sharable),
171 ACPI_EXCLUSIVE},
172
173 /* We can optimize to a 2-byte irq_no_flags() descriptor */
174
175 {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}
176 };
177
178 /*******************************************************************************
179 *
180 * acpi_rs_convert_ext_irq
181 *
182 ******************************************************************************/
183
184 struct acpi_rsconvert_info acpi_rs_convert_ext_irq[9] = {
185 {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
186 ACPI_RS_SIZE(struct acpi_resource_extended_irq),
187 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_irq)},
188
189 {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_IRQ,
190 sizeof(struct aml_resource_extended_irq),
191 0},
192
193 /* Flag bits */
194
195 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.producer_consumer),
196 AML_OFFSET(extended_irq.flags),
197 0},
198
199 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.triggering),
200 AML_OFFSET(extended_irq.flags),
201 1},
202
203 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.polarity),
204 AML_OFFSET(extended_irq.flags),
205 2},
206
207 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.sharable),
208 AML_OFFSET(extended_irq.flags),
209 3},
210
211 /* IRQ Table length (Byte4) */
212
213 {ACPI_RSC_COUNT, ACPI_RS_OFFSET(data.extended_irq.interrupt_count),
214 AML_OFFSET(extended_irq.interrupt_count),
215 sizeof(u32)}
216 ,
217
218 /* Copy every IRQ in the table, each is 32 bits */
219
220 {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
221 AML_OFFSET(extended_irq.interrupts[0]),
222 0}
223 ,
224
225 /* Optional resource_source (Index and String) */
226
227 {ACPI_RSC_SOURCEX, ACPI_RS_OFFSET(data.extended_irq.resource_source),
228 ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
229 sizeof(struct aml_resource_extended_irq)}
230 };
231
232 /*******************************************************************************
233 *
234 * acpi_rs_convert_dma
235 *
236 ******************************************************************************/
237
238 struct acpi_rsconvert_info acpi_rs_convert_dma[6] = {
239 {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_DMA,
240 ACPI_RS_SIZE(struct acpi_resource_dma),
241 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_dma)},
242
243 {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_DMA,
244 sizeof(struct aml_resource_dma),
245 0},
246
247 /* Flags: transfer preference, bus mastering, channel speed */
248
249 {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.transfer),
250 AML_OFFSET(dma.flags),
251 0},
252
253 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.dma.bus_master),
254 AML_OFFSET(dma.flags),
255 2},
256
257 {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.type),
258 AML_OFFSET(dma.flags),
259 5},
260
261 /* DMA channel mask bits */
262
263 {ACPI_RSC_BITMASK, ACPI_RS_OFFSET(data.dma.channels[0]),
264 AML_OFFSET(dma.dma_channel_mask),
265 ACPI_RS_OFFSET(data.dma.channel_count)}
266 };
267
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