| 0a2dfa19 |
1 | /** @file\r |
| f8cd287b |
2 | The implementation for EFI_ISA_IO_PROTOCOL. \r |
| c3902377 |
3 | \r |
| 6fcb2d91 |
4 | Copyright (c) 2006 - 2009, Intel Corporation.<BR>\r |
| f8cd287b |
5 | All rights reserved. This program and the accompanying materials\r |
| 6 | are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | which accompanies this distribution. The full text of the license may be found at\r |
| 8 | http://opensource.org/licenses/bsd-license.php\r |
| c3902377 |
9 | \r |
| f8cd287b |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| c3902377 |
12 | \r |
| f8cd287b |
13 | **/\r |
| c3902377 |
14 | \r |
| c3902377 |
15 | #include "InternalIsaIo.h"\r |
| 16 | \r |
| c3902377 |
17 | //\r |
| 6fcb2d91 |
18 | // Module Variables\r |
| c3902377 |
19 | //\r |
| 6fcb2d91 |
20 | EFI_ISA_IO_PROTOCOL mIsaIoInterface = {\r |
| c3902377 |
21 | { \r |
| 22 | IsaIoMemRead,\r |
| 23 | IsaIoMemWrite\r |
| 24 | },\r |
| 25 | { \r |
| 26 | IsaIoIoRead,\r |
| 27 | IsaIoIoWrite\r |
| 28 | },\r |
| 29 | IsaIoCopyMem,\r |
| 30 | IsaIoMap,\r |
| 31 | IsaIoUnmap,\r |
| 32 | IsaIoAllocateBuffer,\r |
| 33 | IsaIoFreeBuffer,\r |
| 34 | IsaIoFlush,\r |
| 35 | NULL,\r |
| 36 | 0,\r |
| 37 | NULL\r |
| 38 | };\r |
| 39 | \r |
| 6fcb2d91 |
40 | EFI_ISA_DMA_REGISTERS mDmaRegisters[8] = {\r |
| c3902377 |
41 | {\r |
| 42 | 0x00,\r |
| 43 | 0x87,\r |
| 44 | 0x01\r |
| 45 | },\r |
| 46 | {\r |
| 47 | 0x02,\r |
| 48 | 0x83,\r |
| 49 | 0x03\r |
| 50 | },\r |
| 51 | {\r |
| 52 | 0x04,\r |
| 53 | 0x81,\r |
| 54 | 0x05\r |
| 55 | },\r |
| 56 | {\r |
| 57 | 0x06,\r |
| 58 | 0x82,\r |
| 59 | 0x07\r |
| 60 | },\r |
| 61 | {\r |
| 62 | 0x00,\r |
| 63 | 0x00,\r |
| 64 | 0x00\r |
| 65 | }, // Channel 4 is invalid\r |
| 66 | {\r |
| 67 | 0xC4,\r |
| 68 | 0x8B,\r |
| 69 | 0xC6\r |
| 70 | },\r |
| 71 | {\r |
| 72 | 0xC8,\r |
| 73 | 0x89,\r |
| 74 | 0xCA\r |
| 75 | },\r |
| 76 | {\r |
| 77 | 0xCC,\r |
| 78 | 0x8A,\r |
| 79 | 0xCE\r |
| 80 | },\r |
| 81 | };\r |
| 82 | \r |
| bcd70414 |
83 | /**\r |
| 6fcb2d91 |
84 | report a error Status code\r |
| bcd70414 |
85 | \r |
| 6fcb2d91 |
86 | @param Code The error status code.\r |
| bcd70414 |
87 | \r |
| 6fcb2d91 |
88 | @return EFI_SUCCESS Success to report status code.\r |
| bcd70414 |
89 | **/\r |
| c3902377 |
90 | EFI_STATUS\r |
| 91 | ReportErrorStatusCode (\r |
| 92 | EFI_STATUS_CODE_VALUE Code\r |
| 93 | )\r |
| c3902377 |
94 | {\r |
| 95 | return REPORT_STATUS_CODE (\r |
| 6fcb2d91 |
96 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r |
| 97 | Code\r |
| 98 | );\r |
| c3902377 |
99 | }\r |
| 100 | \r |
| bcd70414 |
101 | /**\r |
| bcd70414 |
102 | Initializes an ISA I/O Instance\r |
| c3902377 |
103 | \r |
| 6fcb2d91 |
104 | @param[in] IsaIoDevice The iso device to be initialized.\r |
| 105 | @param[in] IsaDeviceResourceList The resource list.\r |
| bcd70414 |
106 | \r |
| 107 | **/\r |
| 6fcb2d91 |
108 | VOID\r |
| c3902377 |
109 | InitializeIsaIoInstance (\r |
| 110 | IN ISA_IO_DEVICE *IsaIoDevice,\r |
| 111 | IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDeviceResourceList\r |
| 112 | )\r |
| c3902377 |
113 | {\r |
| 114 | //\r |
| 6fcb2d91 |
115 | // Use the ISA IO Protocol structure template to initialize the ISA IO instance\r |
| c3902377 |
116 | //\r |
| 117 | CopyMem (\r |
| 118 | &IsaIoDevice->IsaIo,\r |
| 6fcb2d91 |
119 | &mIsaIoInterface,\r |
| c3902377 |
120 | sizeof (EFI_ISA_IO_PROTOCOL)\r |
| 121 | );\r |
| 122 | \r |
| 123 | IsaIoDevice->IsaIo.ResourceList = IsaDeviceResourceList;\r |
| c3902377 |
124 | }\r |
| 125 | \r |
| bcd70414 |
126 | /**\r |
| 127 | Performs an ISA I/O Read Cycle\r |
| 128 | \r |
| 6fcb2d91 |
129 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 130 | @param[in] Width Specifies the width of the I/O operation.\r |
| 131 | @param[in] Offset The offset in ISA I/O space to start the I/O operation. \r |
| 132 | @param[in] Count The number of I/O operations to perform. \r |
| 133 | @param[out] Buffer The destination buffer to store the results\r |
| bcd70414 |
134 | \r |
| 6fcb2d91 |
135 | @retval EFI_SUCCESS The data was read from the device sucessfully.\r |
| 136 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r |
| 137 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r |
| 138 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r |
| bcd70414 |
139 | **/\r |
| c3902377 |
140 | EFI_STATUS\r |
| 141 | EFIAPI\r |
| 142 | IsaIoIoRead (\r |
| 6fcb2d91 |
143 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 144 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r |
| 145 | IN UINT32 Offset,\r |
| 146 | IN UINTN Count,\r |
| 147 | OUT VOID *Buffer\r |
| c3902377 |
148 | )\r |
| c3902377 |
149 | {\r |
| 150 | EFI_STATUS Status;\r |
| 151 | ISA_IO_DEVICE *IsaIoDevice;\r |
| 152 | \r |
| 153 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r |
| 154 | \r |
| 155 | //\r |
| 156 | // Verify Isa IO Access\r |
| 157 | //\r |
| 158 | Status = IsaIoVerifyAccess (\r |
| 159 | IsaIoDevice,\r |
| 160 | IsaAccessTypeIo,\r |
| 161 | Width,\r |
| 162 | Count,\r |
| 6fcb2d91 |
163 | Offset\r |
| c3902377 |
164 | );\r |
| 165 | if (EFI_ERROR (Status)) {\r |
| 166 | return Status;\r |
| 167 | }\r |
| 6fcb2d91 |
168 | \r |
| c3902377 |
169 | Status = IsaIoDevice->PciIo->Io.Read (\r |
| 170 | IsaIoDevice->PciIo,\r |
| 171 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r |
| 172 | EFI_PCI_IO_PASS_THROUGH_BAR,\r |
| 173 | Offset,\r |
| 174 | Count,\r |
| 175 | Buffer\r |
| 176 | );\r |
| 177 | \r |
| 178 | if (EFI_ERROR (Status)) {\r |
| 179 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 180 | }\r |
| 181 | \r |
| 182 | return Status;\r |
| 183 | }\r |
| 184 | \r |
| bcd70414 |
185 | /**\r |
| 186 | Performs an ISA I/O Write Cycle\r |
| 187 | \r |
| 6fcb2d91 |
188 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 189 | @param[in] Width Specifies the width of the I/O operation.\r |
| 190 | @param[in] Offset The offset in ISA I/O space to start the I/O operation. \r |
| 191 | @param[in] Count The number of I/O operations to perform. \r |
| 192 | @param[in] Buffer The source buffer to write data from\r |
| bcd70414 |
193 | \r |
| 6fcb2d91 |
194 | @retval EFI_SUCCESS The data was writen to the device sucessfully.\r |
| 195 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r |
| 196 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r |
| 197 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r |
| bcd70414 |
198 | **/\r |
| c3902377 |
199 | EFI_STATUS\r |
| 200 | EFIAPI\r |
| 201 | IsaIoIoWrite (\r |
| 6fcb2d91 |
202 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 203 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r |
| 204 | IN UINT32 Offset,\r |
| 205 | IN UINTN Count,\r |
| 206 | IN VOID *Buffer\r |
| c3902377 |
207 | )\r |
| c3902377 |
208 | {\r |
| 209 | EFI_STATUS Status;\r |
| 210 | ISA_IO_DEVICE *IsaIoDevice;\r |
| 211 | \r |
| 212 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r |
| 213 | \r |
| 214 | //\r |
| 215 | // Verify Isa IO Access\r |
| 216 | //\r |
| 217 | Status = IsaIoVerifyAccess (\r |
| 218 | IsaIoDevice,\r |
| 219 | IsaAccessTypeIo,\r |
| 220 | Width,\r |
| 221 | Count,\r |
| 6fcb2d91 |
222 | Offset\r |
| c3902377 |
223 | );\r |
| 224 | if (EFI_ERROR (Status)) {\r |
| 225 | return Status;\r |
| 226 | }\r |
| 6fcb2d91 |
227 | \r |
| c3902377 |
228 | Status = IsaIoDevice->PciIo->Io.Write (\r |
| 229 | IsaIoDevice->PciIo,\r |
| 230 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r |
| 231 | EFI_PCI_IO_PASS_THROUGH_BAR,\r |
| 232 | Offset,\r |
| 233 | Count,\r |
| 234 | Buffer\r |
| 235 | );\r |
| 236 | \r |
| 237 | if (EFI_ERROR (Status)) {\r |
| 238 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 239 | }\r |
| 240 | \r |
| 241 | return Status;\r |
| 242 | }\r |
| 243 | \r |
| bcd70414 |
244 | /**\r |
| 6fcb2d91 |
245 | Writes an 8-bit I/O Port\r |
| bcd70414 |
246 | \r |
| 6fcb2d91 |
247 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 248 | @param[in] Offset The offset in ISA IO space to start the IO operation. \r |
| 249 | @param[in] Value The data to write port.\r |
| bcd70414 |
250 | \r |
| 6fcb2d91 |
251 | @retval EFI_SUCCESS Success.\r |
| 252 | @retval EFI_INVALID_PARAMETER Parameter is invalid.\r |
| 253 | @retval EFI_UNSUPPORTED The address range specified by Offset is not valid.\r |
| 254 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r |
| bcd70414 |
255 | **/\r |
| c3902377 |
256 | EFI_STATUS\r |
| 257 | WritePort (\r |
| 6fcb2d91 |
258 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 259 | IN UINT32 Offset,\r |
| 260 | IN UINT8 Value\r |
| c3902377 |
261 | )\r |
| c3902377 |
262 | {\r |
| 263 | EFI_STATUS Status;\r |
| 264 | ISA_IO_DEVICE *IsaIoDevice;\r |
| 265 | \r |
| 266 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r |
| 267 | \r |
| c3902377 |
268 | Status = IsaIoDevice->PciIo->Io.Write (\r |
| 269 | IsaIoDevice->PciIo,\r |
| 270 | EfiPciIoWidthUint8,\r |
| 271 | EFI_PCI_IO_PASS_THROUGH_BAR,\r |
| 272 | Offset,\r |
| 273 | 1,\r |
| 274 | &Value\r |
| 275 | );\r |
| 276 | if (EFI_ERROR (Status)) {\r |
| 277 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 278 | return Status;\r |
| 279 | }\r |
| 280 | \r |
| 281 | gBS->Stall (50);\r |
| 282 | \r |
| 283 | return EFI_SUCCESS;\r |
| 284 | }\r |
| 285 | \r |
| bcd70414 |
286 | /**\r |
| 287 | Writes I/O operation base address and count number to a 8 bit I/O Port.\r |
| 288 | \r |
| 6fcb2d91 |
289 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 290 | @param[in] AddrOffset The address' offset.\r |
| 291 | @param[in] PageOffset The page's offest.\r |
| 292 | @param[in] CountOffset The count's offset.\r |
| 293 | @param[in] BaseAddress The base address.\r |
| 294 | @param[in] Count The number of I/O operations to perform. \r |
| bcd70414 |
295 | \r |
| 6fcb2d91 |
296 | @retval EFI_SUCCESS Success.\r |
| 297 | @retval EFI_INVALID_PARAMETER Parameter is invalid.\r |
| 298 | @retval EFI_UNSUPPORTED The address range specified by these Offsets and Count is not valid.\r |
| 299 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r |
| bcd70414 |
300 | **/\r |
| c3902377 |
301 | EFI_STATUS\r |
| 302 | WriteDmaPort (\r |
| 6fcb2d91 |
303 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 304 | IN UINT32 AddrOffset,\r |
| 305 | IN UINT32 PageOffset,\r |
| 306 | IN UINT32 CountOffset,\r |
| 307 | IN UINT32 BaseAddress,\r |
| 308 | IN UINT16 Count\r |
| c3902377 |
309 | )\r |
| c3902377 |
310 | {\r |
| 311 | EFI_STATUS Status;\r |
| 312 | \r |
| 313 | Status = WritePort (This, AddrOffset, (UINT8) (BaseAddress & 0xff));\r |
| 314 | if (EFI_ERROR (Status)) {\r |
| 315 | return Status;\r |
| 316 | }\r |
| 317 | \r |
| 318 | Status = WritePort (This, AddrOffset, (UINT8) ((BaseAddress >> 8) & 0xff));\r |
| 319 | if (EFI_ERROR (Status)) {\r |
| 320 | return Status;\r |
| 321 | }\r |
| 322 | \r |
| 323 | Status = WritePort (This, PageOffset, (UINT8) ((BaseAddress >> 16) & 0xff));\r |
| 324 | if (EFI_ERROR (Status)) {\r |
| 325 | return Status;\r |
| 326 | }\r |
| 327 | \r |
| 328 | Status = WritePort (This, CountOffset, (UINT8) (Count & 0xff));\r |
| 329 | if (EFI_ERROR (Status)) {\r |
| 330 | return Status;\r |
| 331 | }\r |
| 332 | \r |
| 333 | Status = WritePort (This, CountOffset, (UINT8) ((Count >> 8) & 0xff));\r |
| 6fcb2d91 |
334 | return Status;\r |
| c3902377 |
335 | }\r |
| 336 | \r |
| bcd70414 |
337 | /**\r |
| 338 | Unmaps a memory region for DMA\r |
| 339 | \r |
| 6fcb2d91 |
340 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 341 | @param[in] Mapping The mapping value returned from EFI_ISA_IO.Map().\r |
| bcd70414 |
342 | \r |
| 6fcb2d91 |
343 | @retval EFI_SUCCESS The range was unmapped.\r |
| 344 | @retval EFI_DEVICE_ERROR The data was not committed to the target system memory.\r |
| bcd70414 |
345 | **/\r |
| c3902377 |
346 | EFI_STATUS\r |
| 347 | EFIAPI\r |
| 348 | IsaIoUnmap (\r |
| 6fcb2d91 |
349 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 350 | IN VOID *Mapping\r |
| c3902377 |
351 | )\r |
| c3902377 |
352 | {\r |
| 353 | ISA_MAP_INFO *IsaMapInfo;\r |
| 354 | \r |
| 355 | //\r |
| 356 | // Unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r |
| 357 | //\r |
| 358 | if (!FeaturePcdGet (PcdIsaBusSupportDma)) {\r |
| 359 | return EFI_UNSUPPORTED;\r |
| 360 | }\r |
| 361 | \r |
| 362 | //\r |
| 363 | // See if the Map() operation associated with this Unmap() required a mapping\r |
| 364 | // buffer.If a mapping buffer was not required, then this function simply\r |
| 365 | // returns EFI_SUCCESS.\r |
| 366 | //\r |
| 367 | if (Mapping != NULL) {\r |
| 368 | //\r |
| 369 | // Get the MAP_INFO structure from Mapping\r |
| 370 | //\r |
| 371 | IsaMapInfo = (ISA_MAP_INFO *) Mapping;\r |
| 372 | \r |
| 373 | //\r |
| 374 | // If this is a write operation from the Agent's point of view,\r |
| 375 | // then copy the contents of the mapped buffer into the real buffer\r |
| 376 | // so the processor can read the contents of the real buffer.\r |
| 377 | //\r |
| 378 | if (IsaMapInfo->Operation == EfiIsaIoOperationBusMasterWrite) {\r |
| 379 | CopyMem (\r |
| 380 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r |
| 381 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r |
| 382 | IsaMapInfo->NumberOfBytes\r |
| 383 | );\r |
| 384 | }\r |
| 385 | //\r |
| 386 | // Free the mapped buffer and the MAP_INFO structure.\r |
| 387 | //\r |
| 388 | gBS->FreePages (IsaMapInfo->MappedHostAddress, IsaMapInfo->NumberOfPages);\r |
| f423cbf1 |
389 | FreePool (IsaMapInfo);\r |
| c3902377 |
390 | }\r |
| 391 | \r |
| 392 | return EFI_SUCCESS;\r |
| 393 | }\r |
| 394 | \r |
| bcd70414 |
395 | /**\r |
| 6fcb2d91 |
396 | Flushes any posted write data to the system memory.\r |
| bcd70414 |
397 | \r |
| 6fcb2d91 |
398 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| bcd70414 |
399 | \r |
| 6fcb2d91 |
400 | @retval EFI_SUCCESS The buffers were flushed.\r |
| 401 | @retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error.\r |
| bcd70414 |
402 | **/\r |
| c3902377 |
403 | EFI_STATUS\r |
| 404 | EFIAPI\r |
| 405 | IsaIoFlush (\r |
| 6fcb2d91 |
406 | IN EFI_ISA_IO_PROTOCOL *This\r |
| c3902377 |
407 | )\r |
| c3902377 |
408 | {\r |
| 409 | EFI_STATUS Status;\r |
| 410 | ISA_IO_DEVICE *IsaIoDevice;\r |
| 411 | \r |
| 412 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r |
| 413 | \r |
| c3902377 |
414 | Status = IsaIoDevice->PciIo->Flush (IsaIoDevice->PciIo);\r |
| 415 | \r |
| 416 | if (EFI_ERROR (Status)) {\r |
| 417 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 418 | }\r |
| 419 | \r |
| 420 | return Status;\r |
| 421 | }\r |
| 422 | \r |
| bcd70414 |
423 | /**\r |
| 424 | Verifies access to an ISA device\r |
| 425 | \r |
| 6fcb2d91 |
426 | @param[in] IsaIoDevice The ISA device to be verified.\r |
| 427 | @param[in] Type The Access type. The input must be either IsaAccessTypeMem or IsaAccessTypeIo.\r |
| 428 | @param[in] Width The width of the memory operation.\r |
| 429 | @param[in] Count The number of memory operations to perform. \r |
| 430 | @param[in] Offset The offset in ISA memory space to start the memory operation. \r |
| bcd70414 |
431 | \r |
| 6fcb2d91 |
432 | @retval EFI_SUCCESS Verify success.\r |
| 433 | @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r |
| 434 | @retval EFI_UNSUPPORTED The device ont support the access type.\r |
| bcd70414 |
435 | **/\r |
| c3902377 |
436 | EFI_STATUS\r |
| 437 | IsaIoVerifyAccess (\r |
| 6fcb2d91 |
438 | IN ISA_IO_DEVICE *IsaIoDevice,\r |
| 439 | IN ISA_ACCESS_TYPE Type,\r |
| 440 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r |
| 441 | IN UINTN Count,\r |
| 442 | IN UINT32 Offset\r |
| c3902377 |
443 | )\r |
| c3902377 |
444 | {\r |
| 445 | EFI_ISA_ACPI_RESOURCE *Item;\r |
| 446 | EFI_STATUS Status;\r |
| 447 | \r |
| 448 | if (Width < EfiIsaIoWidthUint8 ||\r |
| 449 | Width >= EfiIsaIoWidthMaximum ||\r |
| 450 | Width == EfiIsaIoWidthReserved ||\r |
| 451 | Width == EfiIsaIoWidthFifoReserved ||\r |
| 452 | Width == EfiIsaIoWidthFillReserved\r |
| 453 | ) {\r |
| 454 | return EFI_INVALID_PARAMETER;\r |
| 455 | }\r |
| 456 | \r |
| 457 | //\r |
| 458 | // If Width is EfiIsaIoWidthFifoUintX then convert to EfiIsaIoWidthUintX\r |
| 459 | // If Width is EfiIsaIoWidthFillUintX then convert to EfiIsaIoWidthUintX\r |
| 460 | //\r |
| 6fcb2d91 |
461 | if (Width >= EfiIsaIoWidthFifoUint8 && Width < EfiIsaIoWidthFifoReserved) {\r |
| c3902377 |
462 | Count = 1;\r |
| 463 | }\r |
| 464 | \r |
| 465 | Width = (EFI_ISA_IO_PROTOCOL_WIDTH) (Width & 0x03);\r |
| 466 | \r |
| 467 | Status = EFI_UNSUPPORTED;\r |
| 468 | Item = IsaIoDevice->IsaIo.ResourceList->ResourceItem;\r |
| 469 | while (Item->Type != EfiIsaAcpiResourceEndOfList) {\r |
| 470 | if ((Type == IsaAccessTypeMem && Item->Type == EfiIsaAcpiResourceMemory) ||\r |
| 6fcb2d91 |
471 | (Type == IsaAccessTypeIo && Item->Type == EfiIsaAcpiResourceIo)) {\r |
| 472 | if (Offset >= Item->StartRange && (Offset + Count * (UINT32)(1 << Width)) - 1 <= Item->EndRange) {\r |
| c3902377 |
473 | return EFI_SUCCESS;\r |
| 474 | }\r |
| 475 | \r |
| 6fcb2d91 |
476 | if (Offset >= Item->StartRange && Offset <= Item->EndRange) {\r |
| c3902377 |
477 | Status = EFI_INVALID_PARAMETER;\r |
| 478 | }\r |
| 479 | }\r |
| 480 | \r |
| 481 | Item++;\r |
| 482 | }\r |
| 483 | \r |
| 484 | return Status;\r |
| 485 | }\r |
| 486 | \r |
| bcd70414 |
487 | /**\r |
| bcd70414 |
488 | Performs an ISA Memory Read Cycle\r |
| 489 | \r |
| 6fcb2d91 |
490 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 491 | @param[in] Width Specifies the width of the memory operation.\r |
| 492 | @param[in] Offset The offset in ISA memory space to start the memory operation. \r |
| 493 | @param[in] Count The number of memory operations to perform. \r |
| 494 | @param[out] Buffer The destination buffer to store the results\r |
| bcd70414 |
495 | \r |
| 6fcb2d91 |
496 | @retval EFI_SUCCESS The data was read from the device successfully.\r |
| 497 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r |
| 498 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r |
| 499 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r |
| bcd70414 |
500 | **/\r |
| c3902377 |
501 | EFI_STATUS\r |
| 502 | EFIAPI\r |
| 503 | IsaIoMemRead (\r |
| 6fcb2d91 |
504 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 505 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r |
| 506 | IN UINT32 Offset,\r |
| 507 | IN UINTN Count,\r |
| 508 | OUT VOID *Buffer\r |
| c3902377 |
509 | )\r |
| c3902377 |
510 | {\r |
| 511 | EFI_STATUS Status;\r |
| 512 | ISA_IO_DEVICE *IsaIoDevice;\r |
| 513 | \r |
| 514 | //\r |
| 6fcb2d91 |
515 | // Set Feature Flag PcdIsaBusSupportIsaMemory to FALSE to disable support for\r |
| 516 | // ISA bus memory read/write operations.\r |
| c3902377 |
517 | //\r |
| 518 | if (!FeaturePcdGet (PcdIsaBusSupportIsaMemory)) {\r |
| 519 | return EFI_UNSUPPORTED;\r |
| 520 | }\r |
| 521 | \r |
| 522 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r |
| 523 | \r |
| 524 | //\r |
| 525 | // Verify the Isa Io Access\r |
| 526 | //\r |
| 527 | Status = IsaIoVerifyAccess (\r |
| 528 | IsaIoDevice,\r |
| 529 | IsaAccessTypeMem,\r |
| 530 | Width,\r |
| 531 | Count,\r |
| 6fcb2d91 |
532 | Offset\r |
| c3902377 |
533 | );\r |
| 534 | if (EFI_ERROR (Status)) {\r |
| 535 | return Status;\r |
| 536 | }\r |
| 6fcb2d91 |
537 | \r |
| c3902377 |
538 | Status = IsaIoDevice->PciIo->Mem.Read (\r |
| 539 | IsaIoDevice->PciIo,\r |
| 540 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r |
| 541 | EFI_PCI_IO_PASS_THROUGH_BAR,\r |
| 542 | Offset,\r |
| 543 | Count,\r |
| 544 | Buffer\r |
| 545 | );\r |
| 546 | \r |
| 547 | if (EFI_ERROR (Status)) {\r |
| 548 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 549 | }\r |
| 550 | \r |
| 551 | return Status;\r |
| 552 | }\r |
| 553 | \r |
| bcd70414 |
554 | /**\r |
| 555 | Performs an ISA Memory Write Cycle\r |
| 556 | \r |
| 6fcb2d91 |
557 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance. \r |
| 558 | @param[in] Width Specifies the width of the memory operation.\r |
| 559 | @param[in] Offset The offset in ISA memory space to start the memory operation. \r |
| 560 | @param[in] Count The number of memory operations to perform. \r |
| 561 | @param[in] Buffer The source buffer to write data from\r |
| bcd70414 |
562 | \r |
| 6fcb2d91 |
563 | @retval EFI_SUCCESS The data was written to the device sucessfully.\r |
| 564 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r |
| 565 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r |
| 566 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r |
| bcd70414 |
567 | **/\r |
| c3902377 |
568 | EFI_STATUS\r |
| 569 | EFIAPI\r |
| 570 | IsaIoMemWrite (\r |
| 6fcb2d91 |
571 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 572 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r |
| 573 | IN UINT32 Offset,\r |
| 574 | IN UINTN Count,\r |
| 575 | IN VOID *Buffer\r |
| c3902377 |
576 | )\r |
| c3902377 |
577 | {\r |
| 578 | EFI_STATUS Status;\r |
| 579 | ISA_IO_DEVICE *IsaIoDevice;\r |
| 580 | \r |
| 581 | //\r |
| 6fcb2d91 |
582 | // Set Feature Flag PcdIsaBusSupportIsaMemory to FALSE to disable support for\r |
| 583 | // ISA bus memory read/write operations.\r |
| c3902377 |
584 | //\r |
| 585 | if (!FeaturePcdGet (PcdIsaBusSupportIsaMemory)) {\r |
| 586 | return EFI_UNSUPPORTED;\r |
| 587 | }\r |
| 588 | \r |
| 589 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r |
| 590 | \r |
| 591 | //\r |
| 592 | // Verify Isa IO Access\r |
| 593 | //\r |
| 594 | Status = IsaIoVerifyAccess (\r |
| 595 | IsaIoDevice,\r |
| 596 | IsaAccessTypeMem,\r |
| 597 | Width,\r |
| 598 | Count,\r |
| 6fcb2d91 |
599 | Offset\r |
| c3902377 |
600 | );\r |
| 601 | if (EFI_ERROR (Status)) {\r |
| 602 | return Status;\r |
| 603 | }\r |
| 6fcb2d91 |
604 | \r |
| c3902377 |
605 | Status = IsaIoDevice->PciIo->Mem.Write (\r |
| 606 | IsaIoDevice->PciIo,\r |
| 607 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r |
| 608 | EFI_PCI_IO_PASS_THROUGH_BAR,\r |
| 609 | Offset,\r |
| 610 | Count,\r |
| 611 | Buffer\r |
| 612 | );\r |
| 613 | \r |
| 614 | if (EFI_ERROR (Status)) {\r |
| 615 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 616 | }\r |
| 617 | \r |
| 618 | return Status;\r |
| 619 | }\r |
| 620 | \r |
| bcd70414 |
621 | /**\r |
| 6fcb2d91 |
622 | Copy one region of ISA memory space to another region of ISA memory space on the ISA controller.\r |
| 623 | \r |
| 624 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 625 | @param[in] Width Specifies the width of the memory copy operation.\r |
| 0a2dfa19 |
626 | @param[in] DestOffset The offset of the destination \r |
| 6fcb2d91 |
627 | @param[in] SrcOffset The offset of the source\r |
| 628 | @param[in] Count The number of memory copy operations to perform\r |
| 629 | \r |
| 630 | @retval EFI_SUCCESS The data was copied sucessfully.\r |
| 631 | @retval EFI_UNSUPPORTED The DestOffset or SrcOffset is not valid for this device.\r |
| 632 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r |
| 633 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r |
| bcd70414 |
634 | **/\r |
| c3902377 |
635 | EFI_STATUS\r |
| 636 | EFIAPI\r |
| 637 | IsaIoCopyMem (\r |
| 6fcb2d91 |
638 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 639 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r |
| 640 | IN UINT32 DestOffset,\r |
| 641 | IN UINT32 SrcOffset,\r |
| 642 | IN UINTN Count\r |
| c3902377 |
643 | )\r |
| c3902377 |
644 | {\r |
| 645 | EFI_STATUS Status;\r |
| 646 | ISA_IO_DEVICE *IsaIoDevice;\r |
| 647 | \r |
| 648 | //\r |
| 6fcb2d91 |
649 | // Set Feature Flag PcdIsaBusSupportIsaMemory to FALSE to disable support for\r |
| 650 | // ISA bus memory read/write operations.\r |
| c3902377 |
651 | //\r |
| 652 | if (!FeaturePcdGet (PcdIsaBusSupportIsaMemory)) {\r |
| 653 | return EFI_UNSUPPORTED;\r |
| 654 | }\r |
| 655 | \r |
| 656 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r |
| 657 | \r |
| 658 | //\r |
| 659 | // Verify Isa IO Access for destination and source\r |
| 660 | //\r |
| 661 | Status = IsaIoVerifyAccess (\r |
| 662 | IsaIoDevice,\r |
| 663 | IsaAccessTypeMem,\r |
| 664 | Width,\r |
| 665 | Count,\r |
| 6fcb2d91 |
666 | DestOffset\r |
| c3902377 |
667 | );\r |
| 668 | if (EFI_ERROR (Status)) {\r |
| 669 | return Status;\r |
| 670 | }\r |
| 671 | \r |
| 672 | Status = IsaIoVerifyAccess (\r |
| 673 | IsaIoDevice,\r |
| 674 | IsaAccessTypeMem,\r |
| 675 | Width,\r |
| 676 | Count,\r |
| 6fcb2d91 |
677 | SrcOffset\r |
| c3902377 |
678 | );\r |
| 679 | if (EFI_ERROR (Status)) {\r |
| 680 | return Status;\r |
| 681 | }\r |
| 6fcb2d91 |
682 | \r |
| c3902377 |
683 | Status = IsaIoDevice->PciIo->CopyMem (\r |
| 684 | IsaIoDevice->PciIo,\r |
| 685 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r |
| 686 | EFI_PCI_IO_PASS_THROUGH_BAR,\r |
| 687 | DestOffset,\r |
| 688 | EFI_PCI_IO_PASS_THROUGH_BAR,\r |
| 689 | SrcOffset,\r |
| 690 | Count\r |
| 691 | );\r |
| 692 | \r |
| 693 | if (EFI_ERROR (Status)) {\r |
| 694 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 695 | }\r |
| 696 | \r |
| 697 | return Status;\r |
| 698 | }\r |
| 699 | \r |
| bcd70414 |
700 | /**\r |
| 701 | Maps a memory region for DMA, note this implementation\r |
| 702 | only supports slave read/write operation to save code size.\r |
| 703 | \r |
| 6fcb2d91 |
704 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 705 | @param Operation Indicates the type of DMA (slave or bus master), and if \r |
| 706 | the DMA operation is going to read or write to system memory. \r |
| 707 | @param ChannelNumber The slave channel number to use for this DMA operation. \r |
| 708 | If Operation and ChannelAttributes shows that this device \r |
| 709 | performs bus mastering DMA, then this field is ignored. \r |
| 710 | The legal range for this field is 0..7. \r |
| 711 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r |
| 712 | @param HostAddress The system memory address to map to the device. \r |
| 713 | @param NumberOfBytes On input the number of bytes to map. On output the number \r |
| 714 | of bytes that were mapped.\r |
| 715 | @param DeviceAddress The resulting map address for the bus master device to use \r |
| 716 | to access the hosts HostAddress. \r |
| 717 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r |
| 718 | \r |
| 719 | @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r |
| 720 | @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r |
| 721 | @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r |
| 722 | @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r |
| 723 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r |
| bcd70414 |
724 | **/\r |
| c3902377 |
725 | EFI_STATUS\r |
| 6fcb2d91 |
726 | IsaIoMapOnlySupportSlaveReadWrite (\r |
| 727 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 728 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r |
| 729 | IN UINT8 ChannelNumber OPTIONAL,\r |
| 730 | IN UINT32 ChannelAttributes,\r |
| 731 | IN VOID *HostAddress,\r |
| 732 | IN OUT UINTN *NumberOfBytes,\r |
| 733 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r |
| 734 | OUT VOID **Mapping\r |
| c3902377 |
735 | )\r |
| c3902377 |
736 | {\r |
| 737 | EFI_STATUS Status;\r |
| 738 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r |
| 739 | ISA_MAP_INFO *IsaMapInfo;\r |
| 740 | UINT8 DmaMode;\r |
| 741 | UINTN MaxNumberOfBytes;\r |
| 742 | UINT32 BaseAddress;\r |
| 743 | UINT16 Count;\r |
| c3902377 |
744 | UINT8 DmaMask;\r |
| 745 | UINT8 DmaClear;\r |
| 746 | UINT8 DmaChannelMode;\r |
| 747 | \r |
| 748 | if ((NULL == This) ||\r |
| 749 | (NULL == HostAddress) ||\r |
| 750 | (NULL == NumberOfBytes) ||\r |
| 751 | (NULL == DeviceAddress) ||\r |
| 752 | (NULL == Mapping)\r |
| 753 | ) {\r |
| 754 | return EFI_INVALID_PARAMETER;\r |
| 755 | }\r |
| 756 | \r |
| c3902377 |
757 | //\r |
| 758 | // Initialize the return values to their defaults\r |
| 759 | //\r |
| 760 | *Mapping = NULL;\r |
| 761 | \r |
| 762 | //\r |
| 763 | // Make sure the Operation parameter is valid.\r |
| 764 | // Light IsaIo only supports two operations.\r |
| 765 | //\r |
| 766 | if (!(Operation == EfiIsaIoOperationSlaveRead || \r |
| 767 | Operation == EfiIsaIoOperationSlaveWrite)) {\r |
| 768 | return EFI_INVALID_PARAMETER;\r |
| 769 | }\r |
| 770 | \r |
| 771 | if (ChannelNumber >= 4) {\r |
| 772 | //\r |
| 773 | // The Light IsaIo doesn't support channelNumber larger than 4.\r |
| 774 | //\r |
| 775 | return EFI_INVALID_PARAMETER;\r |
| 776 | }\r |
| 777 | \r |
| 778 | //\r |
| 779 | // Map the HostAddress to a DeviceAddress.\r |
| 780 | //\r |
| 781 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r |
| 6fcb2d91 |
782 | if ((PhysicalAddress + *NumberOfBytes) > ISA_MAX_MEMORY_ADDRESS) {\r |
| c3902377 |
783 | //\r |
| 784 | // Common Buffer operations can not be remapped. If the common buffer\r |
| 785 | // is above 16MB, then it is not possible to generate a mapping, so return\r |
| 786 | // an error.\r |
| 787 | //\r |
| 788 | if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r |
| 789 | return EFI_UNSUPPORTED;\r |
| 790 | }\r |
| 791 | //\r |
| 792 | // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r |
| 793 | // is called later.\r |
| 794 | //\r |
| 795 | IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r |
| 796 | if (IsaMapInfo == NULL) {\r |
| 797 | *NumberOfBytes = 0;\r |
| 798 | return EFI_OUT_OF_RESOURCES;\r |
| 799 | }\r |
| 800 | //\r |
| 801 | // Return a pointer to the MAP_INFO structure in Mapping\r |
| 802 | //\r |
| 803 | *Mapping = IsaMapInfo;\r |
| 804 | \r |
| 805 | //\r |
| 806 | // Initialize the MAP_INFO structure\r |
| 807 | //\r |
| 808 | IsaMapInfo->Operation = Operation;\r |
| 809 | IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r |
| 810 | IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r |
| 811 | IsaMapInfo->HostAddress = PhysicalAddress;\r |
| 812 | IsaMapInfo->MappedHostAddress = ISA_MAX_MEMORY_ADDRESS - 1;\r |
| 813 | \r |
| 814 | //\r |
| 815 | // Allocate a buffer below 16MB to map the transfer to.\r |
| 816 | //\r |
| 817 | Status = gBS->AllocatePages (\r |
| 818 | AllocateMaxAddress,\r |
| 819 | EfiBootServicesData,\r |
| 820 | IsaMapInfo->NumberOfPages,\r |
| 821 | &IsaMapInfo->MappedHostAddress\r |
| 822 | );\r |
| 823 | if (EFI_ERROR (Status)) {\r |
| f423cbf1 |
824 | FreePool (IsaMapInfo);\r |
| c3902377 |
825 | *NumberOfBytes = 0;\r |
| 826 | *Mapping = NULL;\r |
| 827 | return Status;\r |
| 828 | }\r |
| 829 | //\r |
| 830 | // If this is a read operation from the DMA agents's point of view,\r |
| 831 | // then copy the contents of the real buffer into the mapped buffer\r |
| 832 | // so the DMA agent can read the contents of the real buffer.\r |
| 833 | //\r |
| 834 | if (Operation == EfiIsaIoOperationSlaveRead) {\r |
| 835 | CopyMem (\r |
| 836 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r |
| 837 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r |
| 838 | IsaMapInfo->NumberOfBytes\r |
| 839 | );\r |
| 840 | }\r |
| 841 | //\r |
| 842 | // The DeviceAddress is the address of the maped buffer below 16 MB\r |
| 843 | //\r |
| 844 | *DeviceAddress = IsaMapInfo->MappedHostAddress;\r |
| 845 | } else {\r |
| 846 | //\r |
| 847 | // The transfer is below 16 MB, so the DeviceAddress is simply the\r |
| 848 | // HostAddress\r |
| 849 | //\r |
| 850 | *DeviceAddress = PhysicalAddress;\r |
| 851 | }\r |
| 852 | \r |
| 853 | //\r |
| 854 | // Figure out what to program into the DMA Channel Mode Register\r |
| 855 | //\r |
| 856 | DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r |
| 857 | if (Operation == EfiIsaIoOperationSlaveRead) {\r |
| 858 | DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r |
| 859 | } else {\r |
| 860 | DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r |
| 861 | }\r |
| 862 | //\r |
| 863 | // We only support EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE in simplified IsaIo\r |
| 864 | //\r |
| 865 | DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r |
| 866 | \r |
| 867 | //\r |
| 868 | // A Slave DMA transfer can not cross a 64K boundary.\r |
| 869 | // Compute *NumberOfBytes based on this restriction.\r |
| 870 | //\r |
| 871 | MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r |
| 872 | if (*NumberOfBytes > MaxNumberOfBytes) {\r |
| 873 | *NumberOfBytes = MaxNumberOfBytes;\r |
| 874 | }\r |
| 875 | //\r |
| 876 | // Compute the values to program into the BaseAddress and Count registers\r |
| 877 | // of the Slave DMA controller\r |
| 878 | //\r |
| 879 | BaseAddress = (UINT32) (*DeviceAddress);\r |
| 880 | Count = (UINT16) (*NumberOfBytes - 1);\r |
| 881 | //\r |
| 882 | // Program the DMA Write Single Mask Register for ChannelNumber\r |
| 883 | // Clear the DMA Byte Pointer Register\r |
| 884 | //\r |
| 885 | DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r |
| 886 | DmaClear = R_8237_DMA_CBPR_CH0_3;\r |
| 887 | DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r |
| 888 | \r |
| 889 | Status = WritePort (\r |
| 890 | This,\r |
| 891 | DmaMask,\r |
| 892 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r |
| 893 | );\r |
| 894 | if (EFI_ERROR (Status)) {\r |
| 895 | return Status;\r |
| 896 | }\r |
| 897 | \r |
| 898 | Status = WritePort (\r |
| 899 | This,\r |
| 900 | DmaClear,\r |
| 901 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r |
| 902 | );\r |
| 903 | if (EFI_ERROR (Status)) {\r |
| 904 | return Status;\r |
| 905 | }\r |
| 906 | \r |
| 907 | Status = WritePort (This, DmaChannelMode, DmaMode);\r |
| 908 | if (EFI_ERROR (Status)) {\r |
| 909 | return Status;\r |
| 910 | }\r |
| 911 | \r |
| 912 | Status = WriteDmaPort (\r |
| 913 | This,\r |
| 6fcb2d91 |
914 | mDmaRegisters[ChannelNumber].Address,\r |
| 915 | mDmaRegisters[ChannelNumber].Page,\r |
| 916 | mDmaRegisters[ChannelNumber].Count,\r |
| c3902377 |
917 | BaseAddress,\r |
| 918 | Count\r |
| 919 | );\r |
| 920 | if (EFI_ERROR (Status)) {\r |
| 921 | return Status;\r |
| 922 | }\r |
| 923 | \r |
| 924 | Status = WritePort (\r |
| 925 | This,\r |
| 926 | DmaMask,\r |
| 927 | (UINT8) (ChannelNumber & 0x03)\r |
| 928 | );\r |
| 929 | if (EFI_ERROR (Status)) {\r |
| 930 | return Status;\r |
| 931 | }\r |
| 932 | \r |
| 933 | return EFI_SUCCESS;\r |
| 934 | }\r |
| 935 | \r |
| bcd70414 |
936 | /**\r |
| 937 | Maps a memory region for DMA. This implementation implement the \r |
| 938 | the full mapping support.\r |
| 939 | \r |
| 6fcb2d91 |
940 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 941 | @param Operation Indicates the type of DMA (slave or bus master), and if \r |
| 942 | the DMA operation is going to read or write to system memory. \r |
| 943 | @param ChannelNumber The slave channel number to use for this DMA operation. \r |
| 944 | If Operation and ChannelAttributes shows that this device \r |
| 945 | performs bus mastering DMA, then this field is ignored. \r |
| 946 | The legal range for this field is 0..7. \r |
| 947 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r |
| 948 | @param HostAddress The system memory address to map to the device. \r |
| 949 | @param NumberOfBytes On input the number of bytes to map. On output the number \r |
| 950 | of bytes that were mapped.\r |
| 951 | @param DeviceAddress The resulting map address for the bus master device to use \r |
| 952 | to access the hosts HostAddress. \r |
| 953 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r |
| bcd70414 |
954 | \r |
| 955 | @retval EFI_SUCCESS - The range was mapped for the returned NumberOfBytes.\r |
| 956 | @retval EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.\r |
| 957 | @retval EFI_UNSUPPORTED - The HostAddress can not be mapped as a common buffer.\r |
| 958 | @retval EFI_DEVICE_ERROR - The system hardware could not map the requested address.\r |
| 959 | @retval EFI_OUT_OF_RESOURCES - The memory pages could not be allocated.\r |
| bcd70414 |
960 | **/\r |
| c3902377 |
961 | EFI_STATUS\r |
| 6fcb2d91 |
962 | IsaIoMapFullSupport (\r |
| c3902377 |
963 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 964 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r |
| 965 | IN UINT8 ChannelNumber OPTIONAL,\r |
| 966 | IN UINT32 ChannelAttributes,\r |
| 967 | IN VOID *HostAddress,\r |
| 968 | IN OUT UINTN *NumberOfBytes,\r |
| 969 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r |
| 970 | OUT VOID **Mapping\r |
| 971 | )\r |
| c3902377 |
972 | {\r |
| 973 | EFI_STATUS Status;\r |
| 974 | BOOLEAN Master;\r |
| 975 | BOOLEAN Read;\r |
| 976 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r |
| 977 | ISA_MAP_INFO *IsaMapInfo;\r |
| 978 | UINT8 DmaMode;\r |
| 979 | UINTN MaxNumberOfBytes;\r |
| 980 | UINT32 BaseAddress;\r |
| 981 | UINT16 Count;\r |
| c3902377 |
982 | UINT8 DmaMask;\r |
| 983 | UINT8 DmaClear;\r |
| 984 | UINT8 DmaChannelMode;\r |
| 985 | \r |
| 986 | if ((NULL == This) ||\r |
| 987 | (NULL == HostAddress) ||\r |
| 988 | (NULL == NumberOfBytes) ||\r |
| 989 | (NULL == DeviceAddress) ||\r |
| 990 | (NULL == Mapping)\r |
| 991 | ) {\r |
| 992 | return EFI_INVALID_PARAMETER;\r |
| 993 | }\r |
| 994 | \r |
| c3902377 |
995 | //\r |
| 996 | // Initialize the return values to their defaults\r |
| 997 | //\r |
| 998 | *Mapping = NULL;\r |
| 999 | \r |
| 1000 | //\r |
| 1001 | // Make sure the Operation parameter is valid\r |
| 1002 | //\r |
| 1003 | if (Operation < 0 || Operation >= EfiIsaIoOperationMaximum) {\r |
| 1004 | return EFI_INVALID_PARAMETER;\r |
| 1005 | }\r |
| aa950314 |
1006 | \r |
| 1007 | if (ChannelNumber >= 8) {\r |
| 1008 | return EFI_INVALID_PARAMETER;\r |
| 1009 | }\r |
| 1010 | \r |
| c3902377 |
1011 | //\r |
| 1012 | // See if this is a Slave DMA Operation\r |
| 1013 | //\r |
| 1014 | Master = TRUE;\r |
| 1015 | Read = FALSE;\r |
| 1016 | if (Operation == EfiIsaIoOperationSlaveRead) {\r |
| 1017 | Operation = EfiIsaIoOperationBusMasterRead;\r |
| 1018 | Master = FALSE;\r |
| 1019 | Read = TRUE;\r |
| 1020 | }\r |
| 1021 | \r |
| 1022 | if (Operation == EfiIsaIoOperationSlaveWrite) {\r |
| 1023 | Operation = EfiIsaIoOperationBusMasterWrite;\r |
| 1024 | Master = FALSE;\r |
| 1025 | Read = FALSE;\r |
| 1026 | }\r |
| 1027 | \r |
| 1028 | if (!Master) {\r |
| 1029 | //\r |
| 1030 | // Make sure that ChannelNumber is a valid channel number\r |
| 1031 | // Channel 4 is used to cascade, so it is illegal.\r |
| 1032 | //\r |
| 1033 | if (ChannelNumber == 4 || ChannelNumber > 7) {\r |
| 1034 | return EFI_INVALID_PARAMETER;\r |
| 1035 | }\r |
| 1036 | //\r |
| 1037 | // This implementation only support COMPATIBLE DMA Transfers\r |
| 1038 | //\r |
| 0a2dfa19 |
1039 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_COMPATIBLE) == 0) {\r |
| c3902377 |
1040 | return EFI_INVALID_PARAMETER;\r |
| 1041 | }\r |
| 1042 | \r |
| 0a2dfa19 |
1043 | if ((ChannelAttributes &\r |
| 1044 | (EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_A |\r |
| 1045 | EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_B |\r |
| 1046 | EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_C)) != 0) {\r |
| c3902377 |
1047 | return EFI_INVALID_PARAMETER;\r |
| 1048 | }\r |
| 1049 | \r |
| 1050 | if (ChannelNumber < 4) {\r |
| 1051 | //\r |
| 1052 | // If this is Channel 0..3, then the width must be 8 bit\r |
| 1053 | //\r |
| 0a2dfa19 |
1054 | if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) == 0) ||\r |
| 1055 | ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) != 0)\r |
| c3902377 |
1056 | ) {\r |
| 1057 | return EFI_INVALID_PARAMETER;\r |
| 1058 | }\r |
| 1059 | } else {\r |
| 1060 | //\r |
| 1061 | // If this is Channel 4..7, then the width must be 16 bit\r |
| 1062 | //\r |
| 0a2dfa19 |
1063 | if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) != 0) ||\r |
| 1064 | ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) == 0)) {\r |
| c3902377 |
1065 | return EFI_INVALID_PARAMETER;\r |
| 1066 | }\r |
| 1067 | }\r |
| 1068 | //\r |
| 1069 | // Either Demand Mode or Single Mode must be selected, but not both\r |
| 1070 | //\r |
| 0a2dfa19 |
1071 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r |
| 1072 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r |
| c3902377 |
1073 | return EFI_INVALID_PARAMETER;\r |
| 1074 | }\r |
| 1075 | } else {\r |
| 0a2dfa19 |
1076 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) == 0) {\r |
| c3902377 |
1077 | return EFI_INVALID_PARAMETER;\r |
| 1078 | }\r |
| 1079 | }\r |
| 1080 | }\r |
| 1081 | //\r |
| 1082 | // Map the HostAddress to a DeviceAddress.\r |
| 1083 | //\r |
| 1084 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r |
| 1085 | if ((PhysicalAddress +*NumberOfBytes) > ISA_MAX_MEMORY_ADDRESS) {\r |
| 1086 | //\r |
| 1087 | // Common Buffer operations can not be remapped. If the common buffer\r |
| 1088 | // is above 16MB, then it is not possible to generate a mapping, so return\r |
| 1089 | // an error.\r |
| 1090 | //\r |
| 1091 | if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r |
| 1092 | return EFI_UNSUPPORTED;\r |
| 1093 | }\r |
| 1094 | //\r |
| 1095 | // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r |
| 1096 | // is called later.\r |
| 1097 | //\r |
| 1098 | IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r |
| 1099 | if (IsaMapInfo == NULL) {\r |
| 1100 | *NumberOfBytes = 0;\r |
| 1101 | return EFI_OUT_OF_RESOURCES;\r |
| 1102 | }\r |
| 1103 | //\r |
| 1104 | // Return a pointer to the MAP_INFO structure in Mapping\r |
| 1105 | //\r |
| 1106 | *Mapping = IsaMapInfo;\r |
| 1107 | \r |
| 1108 | //\r |
| 1109 | // Initialize the MAP_INFO structure\r |
| 1110 | //\r |
| 1111 | IsaMapInfo->Operation = Operation;\r |
| 1112 | IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r |
| 1113 | IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r |
| 1114 | IsaMapInfo->HostAddress = PhysicalAddress;\r |
| 1115 | IsaMapInfo->MappedHostAddress = ISA_MAX_MEMORY_ADDRESS - 1;\r |
| 1116 | \r |
| 1117 | //\r |
| 1118 | // Allocate a buffer below 16MB to map the transfer to.\r |
| 1119 | //\r |
| 1120 | Status = gBS->AllocatePages (\r |
| 1121 | AllocateMaxAddress,\r |
| 1122 | EfiBootServicesData,\r |
| 1123 | IsaMapInfo->NumberOfPages,\r |
| 1124 | &IsaMapInfo->MappedHostAddress\r |
| 1125 | );\r |
| 1126 | if (EFI_ERROR (Status)) {\r |
| f423cbf1 |
1127 | FreePool (IsaMapInfo);\r |
| c3902377 |
1128 | *NumberOfBytes = 0;\r |
| 1129 | *Mapping = NULL;\r |
| 1130 | return Status;\r |
| 1131 | }\r |
| 1132 | //\r |
| 1133 | // If this is a read operation from the DMA agents's point of view,\r |
| 1134 | // then copy the contents of the real buffer into the mapped buffer\r |
| 1135 | // so the DMA agent can read the contents of the real buffer.\r |
| 1136 | //\r |
| 1137 | if (Operation == EfiIsaIoOperationBusMasterRead) {\r |
| 1138 | CopyMem (\r |
| 1139 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r |
| 1140 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r |
| 1141 | IsaMapInfo->NumberOfBytes\r |
| 1142 | );\r |
| 1143 | }\r |
| 1144 | //\r |
| 1145 | // The DeviceAddress is the address of the maped buffer below 16 MB\r |
| 1146 | //\r |
| 1147 | *DeviceAddress = IsaMapInfo->MappedHostAddress;\r |
| 1148 | } else {\r |
| 1149 | //\r |
| 1150 | // The transfer is below 16 MB, so the DeviceAddress is simply the\r |
| 1151 | // HostAddress\r |
| 1152 | //\r |
| 1153 | *DeviceAddress = PhysicalAddress;\r |
| 1154 | }\r |
| 1155 | //\r |
| 1156 | // If this is a Bus Master operation then return\r |
| 1157 | //\r |
| 1158 | if (Master) {\r |
| 1159 | return EFI_SUCCESS;\r |
| 1160 | }\r |
| 1161 | //\r |
| 1162 | // Figure out what to program into the DMA Channel Mode Register\r |
| 1163 | //\r |
| 1164 | DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r |
| 1165 | if (Read) {\r |
| 1166 | DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r |
| 1167 | } else {\r |
| 1168 | DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r |
| 1169 | }\r |
| 1170 | \r |
| 0a2dfa19 |
1171 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_AUTO_INITIALIZE) != 0) {\r |
| c3902377 |
1172 | DmaMode |= B_8237_DMA_CHMODE_AE;\r |
| 1173 | }\r |
| 1174 | \r |
| 0a2dfa19 |
1175 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r |
| c3902377 |
1176 | DmaMode |= V_8237_DMA_CHMODE_DEMAND;\r |
| 1177 | }\r |
| 1178 | \r |
| 0a2dfa19 |
1179 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r |
| c3902377 |
1180 | DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r |
| 1181 | }\r |
| 1182 | //\r |
| 1183 | // A Slave DMA transfer can not cross a 64K boundary.\r |
| 1184 | // Compute *NumberOfBytes based on this restriction.\r |
| 1185 | //\r |
| 1186 | MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r |
| 1187 | if (*NumberOfBytes > MaxNumberOfBytes) {\r |
| 1188 | *NumberOfBytes = MaxNumberOfBytes;\r |
| 1189 | }\r |
| 1190 | //\r |
| 1191 | // Compute the values to program into the BaseAddress and Count registers\r |
| 1192 | // of the Slave DMA controller\r |
| 1193 | //\r |
| 1194 | if (ChannelNumber < 4) {\r |
| 1195 | BaseAddress = (UINT32) (*DeviceAddress);\r |
| 1196 | Count = (UINT16) (*NumberOfBytes - 1);\r |
| 1197 | } else {\r |
| 1198 | BaseAddress = (UINT32) (((UINT32) (*DeviceAddress) & 0xff0000) | (((UINT32) (*DeviceAddress) & 0xffff) >> 1));\r |
| 1199 | Count = (UINT16) ((*NumberOfBytes - 1) >> 1);\r |
| 1200 | }\r |
| 1201 | //\r |
| 1202 | // Program the DMA Write Single Mask Register for ChannelNumber\r |
| 1203 | // Clear the DMA Byte Pointer Register\r |
| 1204 | //\r |
| 1205 | if (ChannelNumber < 4) {\r |
| 1206 | DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r |
| 1207 | DmaClear = R_8237_DMA_CBPR_CH0_3;\r |
| 1208 | DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r |
| 1209 | } else {\r |
| 1210 | DmaMask = R_8237_DMA_WRSMSK_CH4_7;\r |
| 1211 | DmaClear = R_8237_DMA_CBPR_CH4_7;\r |
| 1212 | DmaChannelMode = R_8237_DMA_CHMODE_CH4_7;\r |
| 1213 | }\r |
| 1214 | \r |
| 1215 | Status = WritePort (\r |
| 1216 | This,\r |
| 1217 | DmaMask,\r |
| 1218 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r |
| 1219 | );\r |
| 1220 | if (EFI_ERROR (Status)) {\r |
| 1221 | return Status;\r |
| 1222 | }\r |
| 1223 | \r |
| 1224 | Status = WritePort (\r |
| 1225 | This,\r |
| 1226 | DmaClear,\r |
| 1227 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r |
| 1228 | );\r |
| 1229 | if (EFI_ERROR (Status)) {\r |
| 1230 | return Status;\r |
| 1231 | }\r |
| 1232 | \r |
| 1233 | Status = WritePort (This, DmaChannelMode, DmaMode);\r |
| 1234 | if (EFI_ERROR (Status)) {\r |
| 1235 | return Status;\r |
| 1236 | }\r |
| 1237 | \r |
| 1238 | Status = WriteDmaPort (\r |
| 1239 | This,\r |
| 6fcb2d91 |
1240 | mDmaRegisters[ChannelNumber].Address,\r |
| 1241 | mDmaRegisters[ChannelNumber].Page,\r |
| 1242 | mDmaRegisters[ChannelNumber].Count,\r |
| c3902377 |
1243 | BaseAddress,\r |
| 1244 | Count\r |
| 1245 | );\r |
| 1246 | if (EFI_ERROR (Status)) {\r |
| 1247 | return Status;\r |
| 1248 | }\r |
| 1249 | \r |
| 1250 | Status = WritePort (\r |
| 1251 | This,\r |
| 1252 | DmaMask,\r |
| 1253 | (UINT8) (ChannelNumber & 0x03)\r |
| 1254 | );\r |
| 1255 | if (EFI_ERROR (Status)) {\r |
| 1256 | return Status;\r |
| 1257 | }\r |
| 1258 | \r |
| 1259 | return EFI_SUCCESS;\r |
| 1260 | }\r |
| 1261 | \r |
| bcd70414 |
1262 | /**\r |
| 1263 | Maps a memory region for DMA\r |
| 1264 | \r |
| 6fcb2d91 |
1265 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 1266 | @param Operation Indicates the type of DMA (slave or bus master), and if \r |
| 1267 | the DMA operation is going to read or write to system memory. \r |
| 1268 | @param ChannelNumber The slave channel number to use for this DMA operation. \r |
| 1269 | If Operation and ChannelAttributes shows that this device \r |
| 1270 | performs bus mastering DMA, then this field is ignored. \r |
| 1271 | The legal range for this field is 0..7. \r |
| 1272 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r |
| 1273 | @param HostAddress The system memory address to map to the device. \r |
| 1274 | @param NumberOfBytes On input the number of bytes to map. On output the number \r |
| 1275 | of bytes that were mapped.\r |
| 1276 | @param DeviceAddress The resulting map address for the bus master device to use \r |
| 1277 | to access the hosts HostAddress. \r |
| 1278 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r |
| 1279 | \r |
| 1280 | @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r |
| 1281 | @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r |
| 1282 | @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r |
| 1283 | @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r |
| 1284 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r |
| bcd70414 |
1285 | **/\r |
| c3902377 |
1286 | EFI_STATUS\r |
| 1287 | EFIAPI\r |
| 1288 | IsaIoMap (\r |
| 6fcb2d91 |
1289 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 1290 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r |
| 1291 | IN UINT8 ChannelNumber OPTIONAL,\r |
| 1292 | IN UINT32 ChannelAttributes,\r |
| 1293 | IN VOID *HostAddress,\r |
| 1294 | IN OUT UINTN *NumberOfBytes,\r |
| 1295 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r |
| 1296 | OUT VOID **Mapping\r |
| c3902377 |
1297 | )\r |
| c3902377 |
1298 | {\r |
| 1299 | //\r |
| 6fcb2d91 |
1300 | // Set Feature Flag PcdIsaBusSupportDma to FALSE to disable support for ISA DMA.\r |
| c3902377 |
1301 | //\r |
| 1302 | if (!FeaturePcdGet (PcdIsaBusSupportDma)) {\r |
| 1303 | return EFI_UNSUPPORTED;\r |
| 1304 | }\r |
| 1305 | //\r |
| 1306 | // Set Feature Flag PcdIsaBusSupportBusMaster to FALSE to disable support for \r |
| 1307 | // ISA Bus Master.\r |
| 1308 | //\r |
| 1309 | // So we just return EFI_UNSUPPORTED for these functions.\r |
| 1310 | //\r |
| 1311 | if (FeaturePcdGet (PcdIsaBusOnlySupportSlaveDma)) {\r |
| 6fcb2d91 |
1312 | return IsaIoMapOnlySupportSlaveReadWrite (\r |
| 1313 | This,\r |
| 1314 | Operation,\r |
| 1315 | ChannelNumber,\r |
| 1316 | ChannelAttributes,\r |
| 1317 | HostAddress,\r |
| 1318 | NumberOfBytes,\r |
| 1319 | DeviceAddress,\r |
| 1320 | Mapping\r |
| c3902377 |
1321 | );\r |
| 1322 | \r |
| 1323 | } else {\r |
| 6fcb2d91 |
1324 | return IsaIoMapFullSupport (\r |
| 1325 | This,\r |
| 1326 | Operation,\r |
| 1327 | ChannelNumber,\r |
| 1328 | ChannelAttributes,\r |
| 1329 | HostAddress,\r |
| 1330 | NumberOfBytes,\r |
| 1331 | DeviceAddress,\r |
| 1332 | Mapping\r |
| c3902377 |
1333 | );\r |
| 1334 | }\r |
| 1335 | }\r |
| bcd70414 |
1336 | \r |
| 1337 | /**\r |
| 6fcb2d91 |
1338 | Allocates pages that are suitable for an EfiIsaIoOperationBusMasterCommonBuffer mapping.\r |
| 1339 | \r |
| 1340 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 1341 | @param[in] Type The type allocation to perform.\r |
| 1342 | @param[in] MemoryType The type of memory to allocate.\r |
| 1343 | @param[in] Pages The number of pages to allocate.\r |
| 1344 | @param[out] HostAddress A pointer to store the base address of the allocated range.\r |
| 1345 | @param[in] Attributes The requested bit mask of attributes for the allocated range.\r |
| 1346 | \r |
| 1347 | @retval EFI_SUCCESS The requested memory pages were allocated.\r |
| 1348 | @retval EFI_INVALID_PARAMETER Type is invalid or MemoryType is invalid or HostAddress is NULL\r |
| 1349 | @retval EFI_UNSUPPORTED Attributes is unsupported or the memory range specified \r |
| 1350 | by HostAddress, Pages, and Type is not available for common buffer use.\r |
| 1351 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r |
| bcd70414 |
1352 | **/\r |
| c3902377 |
1353 | EFI_STATUS\r |
| 1354 | EFIAPI\r |
| 1355 | IsaIoAllocateBuffer (\r |
| 6fcb2d91 |
1356 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 1357 | IN EFI_ALLOCATE_TYPE Type,\r |
| 1358 | IN EFI_MEMORY_TYPE MemoryType,\r |
| 1359 | IN UINTN Pages,\r |
| 1360 | OUT VOID **HostAddress,\r |
| 1361 | IN UINT64 Attributes\r |
| c3902377 |
1362 | )\r |
| c3902377 |
1363 | {\r |
| 1364 | EFI_STATUS Status;\r |
| 1365 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r |
| 1366 | \r |
| 1367 | //\r |
| 1368 | // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for \r |
| 1369 | // ISA Bus Master.\r |
| 1370 | // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r |
| 1371 | //\r |
| 1372 | if (!FeaturePcdGet (PcdIsaBusSupportDma) || FeaturePcdGet (PcdIsaBusOnlySupportSlaveDma)) {\r |
| 1373 | return EFI_UNSUPPORTED;\r |
| 1374 | }\r |
| 1375 | \r |
| 1376 | if (HostAddress == NULL) {\r |
| 1377 | return EFI_INVALID_PARAMETER;\r |
| 1378 | }\r |
| 1379 | \r |
| 1380 | if (Type < AllocateAnyPages || Type >= MaxAllocateType) {\r |
| 1381 | return EFI_INVALID_PARAMETER;\r |
| 1382 | }\r |
| 1383 | //\r |
| 1384 | // The only valid memory types are EfiBootServicesData and EfiRuntimeServicesData\r |
| 1385 | //\r |
| 1386 | if (MemoryType != EfiBootServicesData && MemoryType != EfiRuntimeServicesData) {\r |
| 1387 | return EFI_INVALID_PARAMETER;\r |
| 1388 | }\r |
| 1389 | \r |
| 0a2dfa19 |
1390 | if ((Attributes & ~(EFI_ISA_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE | EFI_ISA_IO_ATTRIBUTE_MEMORY_CACHED)) != 0) {\r |
| c3902377 |
1391 | return EFI_UNSUPPORTED;\r |
| 1392 | }\r |
| 1393 | \r |
| 1394 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) (ISA_MAX_MEMORY_ADDRESS - 1);\r |
| 1395 | if (Type == AllocateAddress) {\r |
| 1396 | if ((UINTN) (*HostAddress) >= ISA_MAX_MEMORY_ADDRESS) {\r |
| 1397 | return EFI_UNSUPPORTED;\r |
| 1398 | } else {\r |
| 1399 | PhysicalAddress = (UINTN) (*HostAddress);\r |
| 1400 | }\r |
| 1401 | }\r |
| 1402 | \r |
| 1403 | if (Type == AllocateAnyPages) {\r |
| 1404 | Type = AllocateMaxAddress;\r |
| 1405 | }\r |
| 1406 | \r |
| 1407 | Status = gBS->AllocatePages (Type, MemoryType, Pages, &PhysicalAddress);\r |
| 1408 | if (EFI_ERROR (Status)) {\r |
| 1409 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 1410 | return Status;\r |
| 1411 | }\r |
| 1412 | \r |
| 1413 | *HostAddress = (VOID *) (UINTN) PhysicalAddress;\r |
| 1414 | return Status;\r |
| 1415 | }\r |
| 1416 | \r |
| bcd70414 |
1417 | /**\r |
| 6fcb2d91 |
1418 | Frees memory that was allocated with EFI_ISA_IO.AllocateBuffer(). \r |
| c3902377 |
1419 | \r |
| 6fcb2d91 |
1420 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r |
| 1421 | @param[in] Pages The number of pages to free.\r |
| 1422 | @param[in] HostAddress The base address of the allocated range.\r |
| c3902377 |
1423 | \r |
| 6fcb2d91 |
1424 | @retval EFI_SUCCESS The requested memory pages were freed.\r |
| 1425 | @retval EFI_INVALID_PARAMETER The memory was not allocated with EFI_ISA_IO.AllocateBufer().\r |
| bcd70414 |
1426 | **/\r |
| bcd70414 |
1427 | EFI_STATUS\r |
| 1428 | EFIAPI\r |
| 1429 | IsaIoFreeBuffer (\r |
| 6fcb2d91 |
1430 | IN EFI_ISA_IO_PROTOCOL *This,\r |
| 1431 | IN UINTN Pages,\r |
| 1432 | IN VOID *HostAddress\r |
| bcd70414 |
1433 | )\r |
| c3902377 |
1434 | {\r |
| 6fcb2d91 |
1435 | EFI_STATUS Status;\r |
| c3902377 |
1436 | \r |
| 1437 | //\r |
| 1438 | // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for \r |
| 1439 | // ISA Bus Master.\r |
| 1440 | // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r |
| 1441 | //\r |
| 1442 | if (!FeaturePcdGet (PcdIsaBusSupportDma) || FeaturePcdGet (PcdIsaBusOnlySupportSlaveDma)) {\r |
| 1443 | return EFI_UNSUPPORTED;\r |
| 1444 | }\r |
| 1445 | \r |
| c3902377 |
1446 | Status = gBS->FreePages (\r |
| 6fcb2d91 |
1447 | (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress,\r |
| c3902377 |
1448 | Pages\r |
| 1449 | );\r |
| 1450 | if (EFI_ERROR (Status)) {\r |
| 1451 | ReportErrorStatusCode (EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR);\r |
| 1452 | }\r |
| 1453 | \r |
| 1454 | return Status;\r |
| 1455 | }\r |
| 1456 | \r |
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