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 49 ACPI_MODULE_NAME("rsirq") 50 51 /******************************************************************************* 52 * 53 * acpi_rs_get_irq 54 * 55 ******************************************************************************/ 56 struct 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 ******************************************************************************/ 103 104 struct 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 ******************************************************************************/ 183 184 struct 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 ******************************************************************************/ 237 238 struct 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 ******************************************************************************/ 273 274 struct 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