1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2/*******************************************************************************
3 *
4 * Module Name: rsirq - IRQ resource descriptors
5 *
6 ******************************************************************************/
7
8#include <acpi/acpi.h>
9#include "accommon.h"
10#include "acresrc.h"
11
12#define _COMPONENT          ACPI_RESOURCES
13ACPI_MODULE_NAME("rsirq")
14
15/*******************************************************************************
16 *
17 * acpi_rs_get_irq
18 *
19 ******************************************************************************/
20struct acpi_rsconvert_info acpi_rs_get_irq[9] = {
21	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IRQ,
22	 ACPI_RS_SIZE(struct acpi_resource_irq),
23	 ACPI_RSC_TABLE_SIZE(acpi_rs_get_irq)},
24
25	/* Get the IRQ mask (bytes 1:2) */
26
27	{ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
28	 AML_OFFSET(irq.irq_mask),
29	 ACPI_RS_OFFSET(data.irq.interrupt_count)},
30
31	/* Set default flags (others are zero) */
32
33	{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.irq.triggering),
34	 ACPI_EDGE_SENSITIVE,
35	 1},
36
37	/* Get the descriptor length (2 or 3 for IRQ descriptor) */
38
39	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.irq.descriptor_length),
40	 AML_OFFSET(irq.descriptor_type),
41	 0},
42
43	/* All done if no flag byte present in descriptor */
44
45	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 3},
46
47	/* Get flags: Triggering[0], Polarity[3], Sharing[4], Wake[5] */
48
49	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
50	 AML_OFFSET(irq.flags),
51	 0},
52
53	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
54	 AML_OFFSET(irq.flags),
55	 3},
56
57	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.shareable),
58	 AML_OFFSET(irq.flags),
59	 4},
60
61	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.wake_capable),
62	 AML_OFFSET(irq.flags),
63	 5}
64};
65
66/*******************************************************************************
67 *
68 * acpi_rs_set_irq
69 *
70 ******************************************************************************/
71
72struct acpi_rsconvert_info acpi_rs_set_irq[14] = {
73	/* Start with a default descriptor of length 3 */
74
75	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ,
76	 sizeof(struct aml_resource_irq),
77	 ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)},
78
79	/* Convert interrupt list to 16-bit IRQ bitmask */
80
81	{ACPI_RSC_BITMASK16, ACPI_RS_OFFSET(data.irq.interrupts[0]),
82	 AML_OFFSET(irq.irq_mask),
83	 ACPI_RS_OFFSET(data.irq.interrupt_count)},
84
85	/* Set flags: Triggering[0], Polarity[3], Sharing[4], Wake[5] */
86
87	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering),
88	 AML_OFFSET(irq.flags),
89	 0},
90
91	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.polarity),
92	 AML_OFFSET(irq.flags),
93	 3},
94
95	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.shareable),
96	 AML_OFFSET(irq.flags),
97	 4},
98
99	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.wake_capable),
100	 AML_OFFSET(irq.flags),
101	 5},
102
103	/*
104	 * All done if the output descriptor length is required to be 3
105	 * (i.e., optimization to 2 bytes cannot be attempted)
106	 */
107	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
108	 ACPI_RS_OFFSET(data.irq.descriptor_length),
109	 3},
110
111	/* Set length to 2 bytes (no flags byte) */
112
113	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)},
114
115	/*
116	 * All done if the output descriptor length is required to be 2.
117	 *
118	 * TBD: Perhaps we should check for error if input flags are not
119	 * compatible with a 2-byte descriptor.
120	 */
121	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
122	 ACPI_RS_OFFSET(data.irq.descriptor_length),
123	 2},
124
125	/* Reset length to 3 bytes (descriptor with flags byte) */
126
127	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)},
128
129	/*
130	 * Check if the flags byte is necessary. Not needed if the flags are:
131	 * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE
132	 */
133	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
134	 ACPI_RS_OFFSET(data.irq.triggering),
135	 ACPI_EDGE_SENSITIVE},
136
137	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
138	 ACPI_RS_OFFSET(data.irq.polarity),
139	 ACPI_ACTIVE_HIGH},
140
141	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
142	 ACPI_RS_OFFSET(data.irq.shareable),
143	 ACPI_EXCLUSIVE},
144
145	/* We can optimize to a 2-byte irq_no_flags() descriptor */
146
147	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}
148};
149
150/*******************************************************************************
151 *
152 * acpi_rs_convert_ext_irq
153 *
154 ******************************************************************************/
155
156struct acpi_rsconvert_info acpi_rs_convert_ext_irq[10] = {
157	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_IRQ,
158	 ACPI_RS_SIZE(struct acpi_resource_extended_irq),
159	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_irq)},
160
161	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_IRQ,
162	 sizeof(struct aml_resource_extended_irq),
163	 0},
164
165	/*
166	 * Flags: Producer/Consumer[0], Triggering[1], Polarity[2],
167	 *        Sharing[3], Wake[4]
168	 */
169	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.producer_consumer),
170	 AML_OFFSET(extended_irq.flags),
171	 0},
172
173	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.triggering),
174	 AML_OFFSET(extended_irq.flags),
175	 1},
176
177	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.polarity),
178	 AML_OFFSET(extended_irq.flags),
179	 2},
180
181	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.shareable),
182	 AML_OFFSET(extended_irq.flags),
183	 3},
184
185	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.extended_irq.wake_capable),
186	 AML_OFFSET(extended_irq.flags),
187	 4},
188
189	/* IRQ Table length (Byte4) */
190
191	{ACPI_RSC_COUNT, ACPI_RS_OFFSET(data.extended_irq.interrupt_count),
192	 AML_OFFSET(extended_irq.interrupt_count),
193	 sizeof(u32)},
194
195	/* Copy every IRQ in the table, each is 32 bits */
196
197	{ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
198	 AML_OFFSET(extended_irq.interrupts[0]),
199	 0},
200
201	/* Optional resource_source (Index and String) */
202
203	{ACPI_RSC_SOURCEX, ACPI_RS_OFFSET(data.extended_irq.resource_source),
204	 ACPI_RS_OFFSET(data.extended_irq.interrupts[0]),
205	 sizeof(struct aml_resource_extended_irq)}
206};
207
208/*******************************************************************************
209 *
210 * acpi_rs_convert_dma
211 *
212 ******************************************************************************/
213
214struct acpi_rsconvert_info acpi_rs_convert_dma[6] = {
215	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_DMA,
216	 ACPI_RS_SIZE(struct acpi_resource_dma),
217	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_dma)},
218
219	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_DMA,
220	 sizeof(struct aml_resource_dma),
221	 0},
222
223	/* Flags: transfer preference, bus mastering, channel speed */
224
225	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.transfer),
226	 AML_OFFSET(dma.flags),
227	 0},
228
229	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.dma.bus_master),
230	 AML_OFFSET(dma.flags),
231	 2},
232
233	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.dma.type),
234	 AML_OFFSET(dma.flags),
235	 5},
236
237	/* DMA channel mask bits */
238
239	{ACPI_RSC_BITMASK, ACPI_RS_OFFSET(data.dma.channels[0]),
240	 AML_OFFSET(dma.dma_channel_mask),
241	 ACPI_RS_OFFSET(data.dma.channel_count)}
242};
243
244/*******************************************************************************
245 *
246 * acpi_rs_convert_fixed_dma
247 *
248 ******************************************************************************/
249
250struct acpi_rsconvert_info acpi_rs_convert_fixed_dma[4] = {
251	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_DMA,
252	 ACPI_RS_SIZE(struct acpi_resource_fixed_dma),
253	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_dma)},
254
255	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_DMA,
256	 sizeof(struct aml_resource_fixed_dma),
257	 0},
258
259	/*
260	 * These fields are contiguous in both the source and destination:
261	 * request_lines
262	 * Channels
263	 */
264	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_dma.request_lines),
265	 AML_OFFSET(fixed_dma.request_lines),
266	 2},
267
268	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_dma.width),
269	 AML_OFFSET(fixed_dma.width),
270	 1},
271};
272