| | 1 | /** @file\r |
| | 2 | I/O Library MMIO Buffer Functions.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| | 6 | \r |
| | 7 | **/\r |
| | 8 | \r |
| | 9 | #include "DxeCpuIo2LibInternal.h"\r |
| | 10 | \r |
| | 11 | /**\r |
| | 12 | Copy data from MMIO region to system memory by using 8-bit access.\r |
| | 13 | \r |
| | 14 | Copy data from MMIO region specified by starting address StartAddress\r |
| | 15 | to system memory specified by Buffer by using 8-bit access. The total\r |
| | 16 | number of byte to be copied is specified by Length. Buffer is returned.\r |
| | 17 | \r |
| | 18 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 19 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
| | 20 | \r |
| | 21 | \r |
| | 22 | @param StartAddress The starting address for the MMIO region to be copied from.\r |
| | 23 | @param Length The size in bytes of the copy.\r |
| | 24 | @param Buffer The pointer to a system memory buffer receiving the data read.\r |
| | 25 | \r |
| | 26 | @return Buffer\r |
| | 27 | \r |
| | 28 | **/\r |
| | 29 | UINT8 *\r |
| | 30 | EFIAPI\r |
| | 31 | MmioReadBuffer8 (\r |
| | 32 | IN UINTN StartAddress,\r |
| | 33 | IN UINTN Length,\r |
| | 34 | OUT UINT8 *Buffer\r |
| | 35 | )\r |
| | 36 | {\r |
| | 37 | UINT8 *ReturnBuffer;\r |
| | 38 | \r |
| | 39 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 40 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 41 | \r |
| | 42 | ReturnBuffer = Buffer;\r |
| | 43 | \r |
| | 44 | while (Length-- > 0) {\r |
| | 45 | *(Buffer++) = MmioRead8 (StartAddress++);\r |
| | 46 | }\r |
| | 47 | \r |
| | 48 | return ReturnBuffer;\r |
| | 49 | }\r |
| | 50 | \r |
| | 51 | /**\r |
| | 52 | Copy data from MMIO region to system memory by using 16-bit access.\r |
| | 53 | \r |
| | 54 | Copy data from MMIO region specified by starting address StartAddress\r |
| | 55 | to system memory specified by Buffer by using 16-bit access. The total\r |
| | 56 | number of byte to be copied is specified by Length. Buffer is returned.\r |
| | 57 | \r |
| | 58 | If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 59 | \r |
| | 60 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 61 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
| | 62 | \r |
| | 63 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 64 | \r |
| | 65 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 66 | \r |
| | 67 | @param StartAddress The starting address for the MMIO region to be copied from.\r |
| | 68 | @param Length The size in bytes of the copy.\r |
| | 69 | @param Buffer The pointer to a system memory buffer receiving the data read.\r |
| | 70 | \r |
| | 71 | @return Buffer.\r |
| | 72 | \r |
| | 73 | **/\r |
| | 74 | UINT16 *\r |
| | 75 | EFIAPI\r |
| | 76 | MmioReadBuffer16 (\r |
| | 77 | IN UINTN StartAddress,\r |
| | 78 | IN UINTN Length,\r |
| | 79 | OUT UINT16 *Buffer\r |
| | 80 | )\r |
| | 81 | {\r |
| | 82 | UINT16 *ReturnBuffer;\r |
| | 83 | \r |
| | 84 | ASSERT ((StartAddress & (sizeof (UINT16) - 1)) == 0);\r |
| | 85 | \r |
| | 86 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 87 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 88 | \r |
| | 89 | ASSERT ((Length & (sizeof (UINT16) - 1)) == 0);\r |
| | 90 | ASSERT (((UINTN)Buffer & (sizeof (UINT16) - 1)) == 0);\r |
| | 91 | \r |
| | 92 | ReturnBuffer = Buffer;\r |
| | 93 | \r |
| | 94 | while (Length > 0) {\r |
| | 95 | *(Buffer++) = MmioRead16 (StartAddress);\r |
| | 96 | StartAddress += sizeof (UINT16);\r |
| | 97 | Length -= sizeof (UINT16);\r |
| | 98 | }\r |
| | 99 | \r |
| | 100 | return ReturnBuffer;\r |
| | 101 | }\r |
| | 102 | \r |
| | 103 | /**\r |
| | 104 | Copy data from MMIO region to system memory by using 32-bit access.\r |
| | 105 | \r |
| | 106 | Copy data from MMIO region specified by starting address StartAddress\r |
| | 107 | to system memory specified by Buffer by using 32-bit access. The total\r |
| | 108 | number of byte to be copied is specified by Length. Buffer is returned.\r |
| | 109 | \r |
| | 110 | If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 111 | \r |
| | 112 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 113 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
| | 114 | \r |
| | 115 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 116 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 117 | \r |
| | 118 | @param StartAddress The starting address for the MMIO region to be copied from.\r |
| | 119 | @param Length The size in bytes of the copy.\r |
| | 120 | @param Buffer The pointer to a system memory buffer receiving the data read.\r |
| | 121 | \r |
| | 122 | @return Buffer.\r |
| | 123 | \r |
| | 124 | **/\r |
| | 125 | UINT32 *\r |
| | 126 | EFIAPI\r |
| | 127 | MmioReadBuffer32 (\r |
| | 128 | IN UINTN StartAddress,\r |
| | 129 | IN UINTN Length,\r |
| | 130 | OUT UINT32 *Buffer\r |
| | 131 | )\r |
| | 132 | {\r |
| | 133 | UINT32 *ReturnBuffer;\r |
| | 134 | \r |
| | 135 | ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);\r |
| | 136 | \r |
| | 137 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 138 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 139 | \r |
| | 140 | ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);\r |
| | 141 | ASSERT (((UINTN)Buffer & (sizeof (UINT32) - 1)) == 0);\r |
| | 142 | \r |
| | 143 | ReturnBuffer = Buffer;\r |
| | 144 | \r |
| | 145 | while (Length > 0) {\r |
| | 146 | *(Buffer++) = MmioRead32 (StartAddress);\r |
| | 147 | StartAddress += sizeof (UINT32);\r |
| | 148 | Length -= sizeof (UINT32);\r |
| | 149 | }\r |
| | 150 | \r |
| | 151 | return ReturnBuffer;\r |
| | 152 | }\r |
| | 153 | \r |
| | 154 | /**\r |
| | 155 | Copy data from MMIO region to system memory by using 64-bit access.\r |
| | 156 | \r |
| | 157 | Copy data from MMIO region specified by starting address StartAddress\r |
| | 158 | to system memory specified by Buffer by using 64-bit access. The total\r |
| | 159 | number of byte to be copied is specified by Length. Buffer is returned.\r |
| | 160 | \r |
| | 161 | If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 162 | \r |
| | 163 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 164 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
| | 165 | \r |
| | 166 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 167 | \r |
| | 168 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 169 | \r |
| | 170 | @param StartAddress The starting address for the MMIO region to be copied from.\r |
| | 171 | @param Length The size in bytes of the copy.\r |
| | 172 | @param Buffer The pointer to a system memory buffer receiving the data read.\r |
| | 173 | \r |
| | 174 | @return Buffer.\r |
| | 175 | \r |
| | 176 | **/\r |
| | 177 | UINT64 *\r |
| | 178 | EFIAPI\r |
| | 179 | MmioReadBuffer64 (\r |
| | 180 | IN UINTN StartAddress,\r |
| | 181 | IN UINTN Length,\r |
| | 182 | OUT UINT64 *Buffer\r |
| | 183 | )\r |
| | 184 | {\r |
| | 185 | UINT64 *ReturnBuffer;\r |
| | 186 | \r |
| | 187 | ASSERT ((StartAddress & (sizeof (UINT64) - 1)) == 0);\r |
| | 188 | \r |
| | 189 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 190 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 191 | \r |
| | 192 | ASSERT ((Length & (sizeof (UINT64) - 1)) == 0);\r |
| | 193 | ASSERT (((UINTN)Buffer & (sizeof (UINT64) - 1)) == 0);\r |
| | 194 | \r |
| | 195 | ReturnBuffer = Buffer;\r |
| | 196 | \r |
| | 197 | while (Length > 0) {\r |
| | 198 | *(Buffer++) = MmioRead64 (StartAddress);\r |
| | 199 | StartAddress += sizeof (UINT64);\r |
| | 200 | Length -= sizeof (UINT64);\r |
| | 201 | }\r |
| | 202 | \r |
| | 203 | return ReturnBuffer;\r |
| | 204 | }\r |
| | 205 | \r |
| | 206 | /**\r |
| | 207 | Copy data from system memory to MMIO region by using 8-bit access.\r |
| | 208 | \r |
| | 209 | Copy data from system memory specified by Buffer to MMIO region specified\r |
| | 210 | by starting address StartAddress by using 8-bit access. The total number\r |
| | 211 | of byte to be copied is specified by Length. Buffer is returned.\r |
| | 212 | \r |
| | 213 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 214 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r |
| | 215 | \r |
| | 216 | \r |
| | 217 | @param StartAddress The starting address for the MMIO region to be copied to.\r |
| | 218 | @param Length The size in bytes of the copy.\r |
| | 219 | @param Buffer The pointer to a system memory buffer containing the data to write.\r |
| | 220 | \r |
| | 221 | @return Buffer.\r |
| | 222 | \r |
| | 223 | **/\r |
| | 224 | UINT8 *\r |
| | 225 | EFIAPI\r |
| | 226 | MmioWriteBuffer8 (\r |
| | 227 | IN UINTN StartAddress,\r |
| | 228 | IN UINTN Length,\r |
| | 229 | IN CONST UINT8 *Buffer\r |
| | 230 | )\r |
| | 231 | {\r |
| | 232 | VOID *ReturnBuffer;\r |
| | 233 | \r |
| | 234 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 235 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 236 | \r |
| | 237 | ReturnBuffer = (UINT8 *)Buffer;\r |
| | 238 | \r |
| | 239 | while (Length-- > 0) {\r |
| | 240 | MmioWrite8 (StartAddress++, *(Buffer++));\r |
| | 241 | }\r |
| | 242 | \r |
| | 243 | return ReturnBuffer;\r |
| | 244 | }\r |
| | 245 | \r |
| | 246 | /**\r |
| | 247 | Copy data from system memory to MMIO region by using 16-bit access.\r |
| | 248 | \r |
| | 249 | Copy data from system memory specified by Buffer to MMIO region specified\r |
| | 250 | by starting address StartAddress by using 16-bit access. The total number\r |
| | 251 | of byte to be copied is specified by Length. Buffer is returned.\r |
| | 252 | \r |
| | 253 | If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 254 | \r |
| | 255 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 256 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r |
| | 257 | \r |
| | 258 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 259 | \r |
| | 260 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 261 | \r |
| | 262 | @param StartAddress The starting address for the MMIO region to be copied to.\r |
| | 263 | @param Length The size in bytes of the copy.\r |
| | 264 | @param Buffer The pointer to a system memory buffer containing the data to write.\r |
| | 265 | \r |
| | 266 | @return Buffer.\r |
| | 267 | \r |
| | 268 | **/\r |
| | 269 | UINT16 *\r |
| | 270 | EFIAPI\r |
| | 271 | MmioWriteBuffer16 (\r |
| | 272 | IN UINTN StartAddress,\r |
| | 273 | IN UINTN Length,\r |
| | 274 | IN CONST UINT16 *Buffer\r |
| | 275 | )\r |
| | 276 | {\r |
| | 277 | UINT16 *ReturnBuffer;\r |
| | 278 | \r |
| | 279 | ASSERT ((StartAddress & (sizeof (UINT16) - 1)) == 0);\r |
| | 280 | \r |
| | 281 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 282 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 283 | \r |
| | 284 | ASSERT ((Length & (sizeof (UINT16) - 1)) == 0);\r |
| | 285 | ASSERT (((UINTN)Buffer & (sizeof (UINT16) - 1)) == 0);\r |
| | 286 | \r |
| | 287 | ReturnBuffer = (UINT16 *)Buffer;\r |
| | 288 | \r |
| | 289 | while (Length > 0) {\r |
| | 290 | MmioWrite16 (StartAddress, *(Buffer++));\r |
| | 291 | \r |
| | 292 | StartAddress += sizeof (UINT16);\r |
| | 293 | Length -= sizeof (UINT16);\r |
| | 294 | }\r |
| | 295 | \r |
| | 296 | return ReturnBuffer;\r |
| | 297 | }\r |
| | 298 | \r |
| | 299 | /**\r |
| | 300 | Copy data from system memory to MMIO region by using 32-bit access.\r |
| | 301 | \r |
| | 302 | Copy data from system memory specified by Buffer to MMIO region specified\r |
| | 303 | by starting address StartAddress by using 32-bit access. The total number\r |
| | 304 | of byte to be copied is specified by Length. Buffer is returned.\r |
| | 305 | \r |
| | 306 | If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 307 | \r |
| | 308 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 309 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r |
| | 310 | \r |
| | 311 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 312 | \r |
| | 313 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 314 | \r |
| | 315 | @param StartAddress The starting address for the MMIO region to be copied to.\r |
| | 316 | @param Length The size in bytes of the copy.\r |
| | 317 | @param Buffer The pointer to a system memory buffer containing the data to write.\r |
| | 318 | \r |
| | 319 | @return Buffer.\r |
| | 320 | \r |
| | 321 | **/\r |
| | 322 | UINT32 *\r |
| | 323 | EFIAPI\r |
| | 324 | MmioWriteBuffer32 (\r |
| | 325 | IN UINTN StartAddress,\r |
| | 326 | IN UINTN Length,\r |
| | 327 | IN CONST UINT32 *Buffer\r |
| | 328 | )\r |
| | 329 | {\r |
| | 330 | UINT32 *ReturnBuffer;\r |
| | 331 | \r |
| | 332 | ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);\r |
| | 333 | \r |
| | 334 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 335 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 336 | \r |
| | 337 | ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);\r |
| | 338 | ASSERT (((UINTN)Buffer & (sizeof (UINT32) - 1)) == 0);\r |
| | 339 | \r |
| | 340 | ReturnBuffer = (UINT32 *)Buffer;\r |
| | 341 | \r |
| | 342 | while (Length > 0) {\r |
| | 343 | MmioWrite32 (StartAddress, *(Buffer++));\r |
| | 344 | \r |
| | 345 | StartAddress += sizeof (UINT32);\r |
| | 346 | Length -= sizeof (UINT32);\r |
| | 347 | }\r |
| | 348 | \r |
| | 349 | return ReturnBuffer;\r |
| | 350 | }\r |
| | 351 | \r |
| | 352 | /**\r |
| | 353 | Copy data from system memory to MMIO region by using 64-bit access.\r |
| | 354 | \r |
| | 355 | Copy data from system memory specified by Buffer to MMIO region specified\r |
| | 356 | by starting address StartAddress by using 64-bit access. The total number\r |
| | 357 | of byte to be copied is specified by Length. Buffer is returned.\r |
| | 358 | \r |
| | 359 | If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 360 | \r |
| | 361 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r |
| | 362 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r |
| | 363 | \r |
| | 364 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 365 | \r |
| | 366 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 367 | \r |
| | 368 | @param StartAddress The starting address for the MMIO region to be copied to.\r |
| | 369 | @param Length The size in bytes of the copy.\r |
| | 370 | @param Buffer The pointer to a system memory buffer containing the data to write.\r |
| | 371 | \r |
| | 372 | @return Buffer.\r |
| | 373 | \r |
| | 374 | **/\r |
| | 375 | UINT64 *\r |
| | 376 | EFIAPI\r |
| | 377 | MmioWriteBuffer64 (\r |
| | 378 | IN UINTN StartAddress,\r |
| | 379 | IN UINTN Length,\r |
| | 380 | IN CONST UINT64 *Buffer\r |
| | 381 | )\r |
| | 382 | {\r |
| | 383 | UINT64 *ReturnBuffer;\r |
| | 384 | \r |
| | 385 | ASSERT ((StartAddress & (sizeof (UINT64) - 1)) == 0);\r |
| | 386 | \r |
| | 387 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r |
| | 388 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r |
| | 389 | \r |
| | 390 | ASSERT ((Length & (sizeof (UINT64) - 1)) == 0);\r |
| | 391 | ASSERT (((UINTN)Buffer & (sizeof (UINT64) - 1)) == 0);\r |
| | 392 | \r |
| | 393 | ReturnBuffer = (UINT64 *)Buffer;\r |
| | 394 | \r |
| | 395 | while (Length > 0) {\r |
| | 396 | MmioWrite64 (StartAddress, *(Buffer++));\r |
| | 397 | \r |
| | 398 | StartAddress += sizeof (UINT64);\r |
| | 399 | Length -= sizeof (UINT64);\r |
| | 400 | }\r |
| | 401 | \r |
| | 402 | return ReturnBuffer;\r |
| | 403 | }\r |
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