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
49ACPI_MODULE_NAME("rsirq")
50
51/*******************************************************************************
52 *
53 * acpi_rs_get_irq
54 *
55 ******************************************************************************/
56struct 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
104struct 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
184struct 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
238struct 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
274struct 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};
298