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 |
13 | ACPI_MODULE_NAME("rsirq" ) |
14 | |
15 | /******************************************************************************* |
16 | * |
17 | * acpi_rs_get_irq |
18 | * |
19 | ******************************************************************************/ |
20 | struct 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 | |
72 | struct 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 | |
156 | struct 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 | |
214 | struct 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 | |
250 | struct 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 | |