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