| 1 | /******************************************************************************* |
| 2 | * |
| 3 | * Module Name: rsio - IO and DMA resource descriptors |
| 4 | * |
| 5 | ******************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, 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.h" |
| 45 | #include "accommon.h" |
| 46 | #include "acresrc.h" |
| 47 | |
| 48 | #define _COMPONENT ACPI_RESOURCES |
| 49 | ACPI_MODULE_NAME ("rsio" ) |
| 50 | |
| 51 | |
| 52 | /******************************************************************************* |
| 53 | * |
| 54 | * AcpiRsConvertIo |
| 55 | * |
| 56 | ******************************************************************************/ |
| 57 | |
| 58 | ACPI_RSCONVERT_INFO AcpiRsConvertIo[5] = |
| 59 | { |
| 60 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IO, |
| 61 | ACPI_RS_SIZE (ACPI_RESOURCE_IO), |
| 62 | ACPI_RSC_TABLE_SIZE (AcpiRsConvertIo)}, |
| 63 | |
| 64 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IO, |
| 65 | sizeof (AML_RESOURCE_IO), |
| 66 | 0}, |
| 67 | |
| 68 | /* Decode flag */ |
| 69 | |
| 70 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.Io.IoDecode), |
| 71 | AML_OFFSET (Io.Flags), |
| 72 | 0}, |
| 73 | /* |
| 74 | * These fields are contiguous in both the source and destination: |
| 75 | * Address Alignment |
| 76 | * Length |
| 77 | * Minimum Base Address |
| 78 | * Maximum Base Address |
| 79 | */ |
| 80 | {ACPI_RSC_MOVE8, ACPI_RS_OFFSET (Data.Io.Alignment), |
| 81 | AML_OFFSET (Io.Alignment), |
| 82 | 2}, |
| 83 | |
| 84 | {ACPI_RSC_MOVE16, ACPI_RS_OFFSET (Data.Io.Minimum), |
| 85 | AML_OFFSET (Io.Minimum), |
| 86 | 2} |
| 87 | }; |
| 88 | |
| 89 | |
| 90 | /******************************************************************************* |
| 91 | * |
| 92 | * AcpiRsConvertFixedIo |
| 93 | * |
| 94 | ******************************************************************************/ |
| 95 | |
| 96 | ACPI_RSCONVERT_INFO AcpiRsConvertFixedIo[4] = |
| 97 | { |
| 98 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_IO, |
| 99 | ACPI_RS_SIZE (ACPI_RESOURCE_FIXED_IO), |
| 100 | ACPI_RSC_TABLE_SIZE (AcpiRsConvertFixedIo)}, |
| 101 | |
| 102 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_IO, |
| 103 | sizeof (AML_RESOURCE_FIXED_IO), |
| 104 | 0}, |
| 105 | /* |
| 106 | * These fields are contiguous in both the source and destination: |
| 107 | * Base Address |
| 108 | * Length |
| 109 | */ |
| 110 | {ACPI_RSC_MOVE8, ACPI_RS_OFFSET (Data.FixedIo.AddressLength), |
| 111 | AML_OFFSET (FixedIo.AddressLength), |
| 112 | 1}, |
| 113 | |
| 114 | {ACPI_RSC_MOVE16, ACPI_RS_OFFSET (Data.FixedIo.Address), |
| 115 | AML_OFFSET (FixedIo.Address), |
| 116 | 1} |
| 117 | }; |
| 118 | |
| 119 | |
| 120 | /******************************************************************************* |
| 121 | * |
| 122 | * AcpiRsConvertGenericReg |
| 123 | * |
| 124 | ******************************************************************************/ |
| 125 | |
| 126 | ACPI_RSCONVERT_INFO AcpiRsConvertGenericReg[4] = |
| 127 | { |
| 128 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_GENERIC_REGISTER, |
| 129 | ACPI_RS_SIZE (ACPI_RESOURCE_GENERIC_REGISTER), |
| 130 | ACPI_RSC_TABLE_SIZE (AcpiRsConvertGenericReg)}, |
| 131 | |
| 132 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_GENERIC_REGISTER, |
| 133 | sizeof (AML_RESOURCE_GENERIC_REGISTER), |
| 134 | 0}, |
| 135 | /* |
| 136 | * These fields are contiguous in both the source and destination: |
| 137 | * Address Space ID |
| 138 | * Register Bit Width |
| 139 | * Register Bit Offset |
| 140 | * Access Size |
| 141 | */ |
| 142 | {ACPI_RSC_MOVE8, ACPI_RS_OFFSET (Data.GenericReg.SpaceId), |
| 143 | AML_OFFSET (GenericReg.AddressSpaceId), |
| 144 | 4}, |
| 145 | |
| 146 | /* Get the Register Address */ |
| 147 | |
| 148 | {ACPI_RSC_MOVE64, ACPI_RS_OFFSET (Data.GenericReg.Address), |
| 149 | AML_OFFSET (GenericReg.Address), |
| 150 | 1} |
| 151 | }; |
| 152 | |
| 153 | |
| 154 | /******************************************************************************* |
| 155 | * |
| 156 | * AcpiRsConvertEndDpf |
| 157 | * |
| 158 | ******************************************************************************/ |
| 159 | |
| 160 | ACPI_RSCONVERT_INFO AcpiRsConvertEndDpf[2] = |
| 161 | { |
| 162 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_DEPENDENT, |
| 163 | ACPI_RS_SIZE_MIN, |
| 164 | ACPI_RSC_TABLE_SIZE (AcpiRsConvertEndDpf)}, |
| 165 | |
| 166 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_DEPENDENT, |
| 167 | sizeof (AML_RESOURCE_END_DEPENDENT), |
| 168 | 0} |
| 169 | }; |
| 170 | |
| 171 | |
| 172 | /******************************************************************************* |
| 173 | * |
| 174 | * AcpiRsConvertEndTag |
| 175 | * |
| 176 | ******************************************************************************/ |
| 177 | |
| 178 | ACPI_RSCONVERT_INFO AcpiRsConvertEndTag[2] = |
| 179 | { |
| 180 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_TAG, |
| 181 | ACPI_RS_SIZE_MIN, |
| 182 | ACPI_RSC_TABLE_SIZE (AcpiRsConvertEndTag)}, |
| 183 | |
| 184 | /* |
| 185 | * Note: The checksum field is set to zero, meaning that the resource |
| 186 | * data is treated as if the checksum operation succeeded. |
| 187 | * (ACPI Spec 1.0b Section 6.4.2.8) |
| 188 | */ |
| 189 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_TAG, |
| 190 | sizeof (AML_RESOURCE_END_TAG), |
| 191 | 0} |
| 192 | }; |
| 193 | |
| 194 | |
| 195 | /******************************************************************************* |
| 196 | * |
| 197 | * AcpiRsGetStartDpf |
| 198 | * |
| 199 | ******************************************************************************/ |
| 200 | |
| 201 | ACPI_RSCONVERT_INFO AcpiRsGetStartDpf[6] = |
| 202 | { |
| 203 | {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_START_DEPENDENT, |
| 204 | ACPI_RS_SIZE (ACPI_RESOURCE_START_DEPENDENT), |
| 205 | ACPI_RSC_TABLE_SIZE (AcpiRsGetStartDpf)}, |
| 206 | |
| 207 | /* Defaults for Compatibility and Performance priorities */ |
| 208 | |
| 209 | {ACPI_RSC_SET8, ACPI_RS_OFFSET (Data.StartDpf.CompatibilityPriority), |
| 210 | ACPI_ACCEPTABLE_CONFIGURATION, |
| 211 | 2}, |
| 212 | |
| 213 | /* Get the descriptor length (0 or 1 for Start Dpf descriptor) */ |
| 214 | |
| 215 | {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.StartDpf.DescriptorLength), |
| 216 | AML_OFFSET (StartDpf.DescriptorType), |
| 217 | 0}, |
| 218 | |
| 219 | /* All done if there is no flag byte present in the descriptor */ |
| 220 | |
| 221 | {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 1}, |
| 222 | |
| 223 | /* Flag byte is present, get the flags */ |
| 224 | |
| 225 | {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.StartDpf.CompatibilityPriority), |
| 226 | AML_OFFSET (StartDpf.Flags), |
| 227 | 0}, |
| 228 | |
| 229 | {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.StartDpf.PerformanceRobustness), |
| 230 | AML_OFFSET (StartDpf.Flags), |
| 231 | 2} |
| 232 | }; |
| 233 | |
| 234 | |
| 235 | /******************************************************************************* |
| 236 | * |
| 237 | * AcpiRsSetStartDpf |
| 238 | * |
| 239 | ******************************************************************************/ |
| 240 | |
| 241 | ACPI_RSCONVERT_INFO [10] = |
| 242 | { |
| 243 | /* Start with a default descriptor of length 1 */ |
| 244 | |
| 245 | {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_START_DEPENDENT, |
| 246 | sizeof (AML_RESOURCE_START_DEPENDENT), |
| 247 | ACPI_RSC_TABLE_SIZE (AcpiRsSetStartDpf)}, |
| 248 | |
| 249 | /* Set the default flag values */ |
| 250 | |
| 251 | {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.StartDpf.CompatibilityPriority), |
| 252 | AML_OFFSET (StartDpf.Flags), |
| 253 | 0}, |
| 254 | |
| 255 | {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.StartDpf.PerformanceRobustness), |
| 256 | AML_OFFSET (StartDpf.Flags), |
| 257 | 2}, |
| 258 | /* |
| 259 | * All done if the output descriptor length is required to be 1 |
| 260 | * (i.e., optimization to 0 bytes cannot be attempted) |
| 261 | */ |
| 262 | {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, |
| 263 | ACPI_RS_OFFSET(Data.StartDpf.DescriptorLength), |
| 264 | 1}, |
| 265 | |
| 266 | /* Set length to 0 bytes (no flags byte) */ |
| 267 | |
| 268 | {ACPI_RSC_LENGTH, 0, 0, sizeof (AML_RESOURCE_START_DEPENDENT_NOPRIO)}, |
| 269 | |
| 270 | /* |
| 271 | * All done if the output descriptor length is required to be 0. |
| 272 | * |
| 273 | * TBD: Perhaps we should check for error if input flags are not |
| 274 | * compatible with a 0-byte descriptor. |
| 275 | */ |
| 276 | {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, |
| 277 | ACPI_RS_OFFSET(Data.StartDpf.DescriptorLength), |
| 278 | 0}, |
| 279 | |
| 280 | /* Reset length to 1 byte (descriptor with flags byte) */ |
| 281 | |
| 282 | {ACPI_RSC_LENGTH, 0, 0, sizeof (AML_RESOURCE_START_DEPENDENT)}, |
| 283 | |
| 284 | |
| 285 | /* |
| 286 | * All done if flags byte is necessary -- if either priority value |
| 287 | * is not ACPI_ACCEPTABLE_CONFIGURATION |
| 288 | */ |
| 289 | {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE, |
| 290 | ACPI_RS_OFFSET (Data.StartDpf.CompatibilityPriority), |
| 291 | ACPI_ACCEPTABLE_CONFIGURATION}, |
| 292 | |
| 293 | {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE, |
| 294 | ACPI_RS_OFFSET (Data.StartDpf.PerformanceRobustness), |
| 295 | ACPI_ACCEPTABLE_CONFIGURATION}, |
| 296 | |
| 297 | /* Flag byte is not necessary */ |
| 298 | |
| 299 | {ACPI_RSC_LENGTH, 0, 0, sizeof (AML_RESOURCE_START_DEPENDENT_NOPRIO)} |
| 300 | }; |
| 301 | |