Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
[firefly-linux-kernel-4.4.55.git] / drivers / acpi / acpica / rsirq.c
1 /*******************************************************************************
2  *
3  * Module Name: rsirq - IRQ resource descriptors
4  *
5  ******************************************************************************/
6
7 /*
8  * Copyright (C) 2000 - 2015, 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[9] = {
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], Wake[5] */
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         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.wake_capable),
98          AML_OFFSET(irq.flags),
99          5}
100 };
101
102 /*******************************************************************************
103  *
104  * acpi_rs_set_irq
105  *
106  ******************************************************************************/
107
108 struct acpi_rsconvert_info acpi_rs_set_irq[14] = {
109         /* Start with a default descriptor of length 3 */
110
111         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ,
112          sizeof(struct aml_resource_irq),
113          ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)},
114
115         /* Convert interrupt list to 16-bit IRQ bitmask */
116
117         {ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
118          AML_OFFSET(irq.irq_mask),
119          ACPI_RS_OFFSET(data.irq.interrupt_count)},
120
121         /* Set flags: Triggering[0], Polarity[3], Sharing[4], Wake[5] */
122
123         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
124          AML_OFFSET(irq.flags),
125          0},
126
127         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
128          AML_OFFSET(irq.flags),
129          3},
130
131         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable),
132          AML_OFFSET(irq.flags),
133          4},
134
135         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.wake_capable),
136          AML_OFFSET(irq.flags),
137          5},
138
139         /*
140          * All done if the output descriptor length is required to be 3
141          * (i.e., optimization to 2 bytes cannot be attempted)
142          */
143         {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
144          ACPI_RS_OFFSET(data.irq.descriptor_length),
145          3},
146
147         /* Set length to 2 bytes (no flags byte) */
148
149         {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)},
150
151         /*
152          * All done if the output descriptor length is required to be 2.
153          *
154          * TBD: Perhaps we should check for error if input flags are not
155          * compatible with a 2-byte descriptor.
156          */
157         {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
158          ACPI_RS_OFFSET(data.irq.descriptor_length),
159          2},
160
161         /* Reset length to 3 bytes (descriptor with flags byte) */
162
163         {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)},
164
165         /*
166          * Check if the flags byte is necessary. Not needed if the flags are:
167          * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
168          */
169         {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
170          ACPI_RS_OFFSET(data.irq.triggering),
171          ACPI_EDGE_SENSITIVE},
172
173         {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
174          ACPI_RS_OFFSET(data.irq.polarity),
175          ACPI_ACTIVE_HIGH},
176
177         {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
178          ACPI_RS_OFFSET(data.irq.sharable),
179          ACPI_EXCLUSIVE},
180
181         /* We can optimize to a 2-byte irq_no_flags() descriptor */
182
183         {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}
184 };
185
186 /*******************************************************************************
187  *
188  * acpi_rs_convert_ext_irq
189  *
190  ******************************************************************************/
191
192 struct acpi_rsconvert_info acpi_rs_convert_ext_irq[10] = {
193         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
194          ACPI_RS_SIZE(struct acpi_resource_extended_irq),
195          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_irq)},
196
197         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_IRQ,
198          sizeof(struct aml_resource_extended_irq),
199          0},
200
201         /*
202          * Flags: Producer/Consumer[0], Triggering[1], Polarity[2],
203          *        Sharing[3], Wake[4]
204          */
205         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.producer_consumer),
206          AML_OFFSET(extended_irq.flags),
207          0},
208
209         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.triggering),
210          AML_OFFSET(extended_irq.flags),
211          1},
212
213         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.polarity),
214          AML_OFFSET(extended_irq.flags),
215          2},
216
217         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.sharable),
218          AML_OFFSET(extended_irq.flags),
219          3},
220
221         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.wake_capable),
222          AML_OFFSET(extended_irq.flags),
223          4},
224
225         /* IRQ Table length (Byte4) */
226
227         {ACPI_RSC_COUNT, ACPI_RS_OFFSET(data.extended_irq.interrupt_count),
228          AML_OFFSET(extended_irq.interrupt_count),
229          sizeof(u32)},
230
231         /* Copy every IRQ in the table, each is 32 bits */
232
233         {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
234          AML_OFFSET(extended_irq.interrupts[0]),
235          0},
236
237         /* Optional resource_source (Index and String) */
238
239         {ACPI_RSC_SOURCEX, ACPI_RS_OFFSET(data.extended_irq.resource_source),
240          ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
241          sizeof(struct aml_resource_extended_irq)}
242 };
243
244 /*******************************************************************************
245  *
246  * acpi_rs_convert_dma
247  *
248  ******************************************************************************/
249
250 struct acpi_rsconvert_info acpi_rs_convert_dma[6] = {
251         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_DMA,
252          ACPI_RS_SIZE(struct acpi_resource_dma),
253          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_dma)},
254
255         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_DMA,
256          sizeof(struct aml_resource_dma),
257          0},
258
259         /* Flags: transfer preference, bus mastering, channel speed */
260
261         {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.transfer),
262          AML_OFFSET(dma.flags),
263          0},
264
265         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.dma.bus_master),
266          AML_OFFSET(dma.flags),
267          2},
268
269         {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.type),
270          AML_OFFSET(dma.flags),
271          5},
272
273         /* DMA channel mask bits */
274
275         {ACPI_RSC_BITMASK, ACPI_RS_OFFSET(data.dma.channels[0]),
276          AML_OFFSET(dma.dma_channel_mask),
277          ACPI_RS_OFFSET(data.dma.channel_count)}
278 };
279
280 /*******************************************************************************
281  *
282  * acpi_rs_convert_fixed_dma
283  *
284  ******************************************************************************/
285
286 struct acpi_rsconvert_info acpi_rs_convert_fixed_dma[4] = {
287         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_DMA,
288          ACPI_RS_SIZE(struct acpi_resource_fixed_dma),
289          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_dma)},
290
291         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_DMA,
292          sizeof(struct aml_resource_fixed_dma),
293          0},
294
295         /*
296          * These fields are contiguous in both the source and destination:
297          * request_lines
298          * Channels
299          */
300         {ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_dma.request_lines),
301          AML_OFFSET(fixed_dma.request_lines),
302          2},
303
304         {ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_dma.width),
305          AML_OFFSET(fixed_dma.width),
306          1},
307 };