Revert "ARM: tegra: tegratab: dummy change"
[linux-2.6.git] / drivers / acpi / acpica / rsirq.c
1 /*******************************************************************************
2  *
3  * Module Name: rsirq - IRQ 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("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
268 /*******************************************************************************
269  *
270  * acpi_rs_convert_fixed_dma
271  *
272  ******************************************************************************/
273
274 struct acpi_rsconvert_info acpi_rs_convert_fixed_dma[4] = {
275         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_DMA,
276          ACPI_RS_SIZE(struct acpi_resource_fixed_dma),
277          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_dma)},
278
279         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_DMA,
280          sizeof(struct aml_resource_fixed_dma),
281          0},
282
283         /*
284          * These fields are contiguous in both the source and destination:
285          * request_lines
286          * Channels
287          */
288
289         {ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_dma.request_lines),
290          AML_OFFSET(fixed_dma.request_lines),
291          2},
292
293         {ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_dma.width),
294          AML_OFFSET(fixed_dma.width),
295          1},
296
297 };