1/** @file 2 3 Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR> 4 This program and the accompanying materials 5 are licensed and made available under the terms and conditions of the BSD License 6 which accompanies this distribution. The full text of the license may be found at 7 http://opensource.org/licenses/bsd-license.php 8 9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 12**/ 13 14#include "UfsPassThru.h" 15 16// 17// Template for Ufs Pass Thru private data. 18// 19UFS_PASS_THRU_PRIVATE_DATA gUfsPassThruTemplate = { 20 UFS_PASS_THRU_SIG, // Signature 21 NULL, // Handle 22 { // ExtScsiPassThruMode 23 0xFFFFFFFF, 24 EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL | EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL | EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_NONBLOCKIO, 25 sizeof (UINTN) 26 }, 27 { // ExtScsiPassThru 28 NULL, 29 UfsPassThruPassThru, 30 UfsPassThruGetNextTargetLun, 31 UfsPassThruBuildDevicePath, 32 UfsPassThruGetTargetLun, 33 UfsPassThruResetChannel, 34 UfsPassThruResetTargetLun, 35 UfsPassThruGetNextTarget 36 }, 37 0, // UfsHostController 38 0, // UfsHcBase 39 0, // Capabilities 40 0, // TaskTag 41 0, // UtpTrlBase 42 0, // Nutrs 43 0, // TrlMapping 44 0, // UtpTmrlBase 45 0, // Nutmrs 46 0, // TmrlMapping 47 { // Luns 48 { 49 UFS_LUN_0, // Ufs Common Lun 0 50 UFS_LUN_1, // Ufs Common Lun 1 51 UFS_LUN_2, // Ufs Common Lun 2 52 UFS_LUN_3, // Ufs Common Lun 3 53 UFS_LUN_4, // Ufs Common Lun 4 54 UFS_LUN_5, // Ufs Common Lun 5 55 UFS_LUN_6, // Ufs Common Lun 6 56 UFS_LUN_7, // Ufs Common Lun 7 57 UFS_WLUN_REPORT_LUNS, // Ufs Reports Luns Well Known Lun 58 UFS_WLUN_UFS_DEV, // Ufs Device Well Known Lun 59 UFS_WLUN_BOOT, // Ufs Boot Well Known Lun 60 UFS_WLUN_RPMB // RPMB Well Known Lun 61 }, 62 0x0000, // By default don't expose any Luns. 63 0x0 64 }, 65 NULL, // TimerEvent 66 { // Queue 67 NULL, 68 NULL 69 } 70}; 71 72EFI_DRIVER_BINDING_PROTOCOL gUfsPassThruDriverBinding = { 73 UfsPassThruDriverBindingSupported, 74 UfsPassThruDriverBindingStart, 75 UfsPassThruDriverBindingStop, 76 0x10, 77 NULL, 78 NULL 79}; 80 81UFS_DEVICE_PATH mUfsDevicePathTemplate = { 82 { 83 MESSAGING_DEVICE_PATH, 84 MSG_UFS_DP, 85 { 86 (UINT8) (sizeof (UFS_DEVICE_PATH)), 87 (UINT8) ((sizeof (UFS_DEVICE_PATH)) >> 8) 88 } 89 }, 90 0, 91 0 92}; 93 94UINT8 mUfsTargetId[TARGET_MAX_BYTES]; 95 96/** 97 Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel. This function 98 supports both blocking I/O and nonblocking I/O. The blocking I/O functionality is required, and the 99 nonblocking I/O functionality is optional. 100 101 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. 102 @param Target The Target is an array of size TARGET_MAX_BYTES and it represents 103 the id of the SCSI device to send the SCSI Request Packet. Each 104 transport driver may choose to utilize a subset of this size to suit the needs 105 of transport target representation. For example, a Fibre Channel driver 106 may use only 8 bytes (WWN) to represent an FC target. 107 @param Lun The LUN of the SCSI device to send the SCSI Request Packet. 108 @param Packet A pointer to the SCSI Request Packet to send to the SCSI device 109 specified by Target and Lun. 110 @param Event If nonblocking I/O is not supported then Event is ignored, and blocking 111 I/O is performed. If Event is NULL, then blocking I/O is performed. If 112 Event is not NULL and non blocking I/O is supported, then 113 nonblocking I/O is performed, and Event will be signaled when the 114 SCSI Request Packet completes. 115 116 @retval EFI_SUCCESS The SCSI Request Packet was sent by the host. For bi-directional 117 commands, InTransferLength bytes were transferred from 118 InDataBuffer. For write and bi-directional commands, 119 OutTransferLength bytes were transferred by 120 OutDataBuffer. 121 @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was not executed. The number of bytes that 122 could be transferred is returned in InTransferLength. For write 123 and bi-directional commands, OutTransferLength bytes were 124 transferred by OutDataBuffer. 125 @retval EFI_NOT_READY The SCSI Request Packet could not be sent because there are too many 126 SCSI Request Packets already queued. The caller may retry again later. 127 @retval EFI_DEVICE_ERROR A device error occurred while attempting to send the SCSI Request 128 Packet. 129 @retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket are invalid. 130 @retval EFI_UNSUPPORTED The command described by the SCSI Request Packet is not supported 131 by the host adapter. This includes the case of Bi-directional SCSI 132 commands not supported by the implementation. The SCSI Request 133 Packet was not sent, so no additional status information is available. 134 @retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI Request Packet to execute. 135 136**/ 137EFI_STATUS 138EFIAPI 139UfsPassThruPassThru ( 140 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, 141 IN UINT8 *Target, 142 IN UINT64 Lun, 143 IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet, 144 IN EFI_EVENT Event OPTIONAL 145 ) 146{ 147 EFI_STATUS Status; 148 UFS_PASS_THRU_PRIVATE_DATA *Private; 149 UINT8 UfsLun; 150 UINT16 Index; 151 152 Private = UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS (This); 153 154 if ((Packet == NULL) || (Packet->Cdb == NULL)) { 155 return EFI_INVALID_PARAMETER; 156 } 157 158 // 159 // Don't support variable length CDB 160 // 161 if ((Packet->CdbLength != 6) && (Packet->CdbLength != 10) && 162 (Packet->CdbLength != 12) && (Packet->CdbLength != 16)) { 163 return EFI_INVALID_PARAMETER; 164 } 165 166 if ((Packet->SenseDataLength != 0) && (Packet->SenseData == NULL)) { 167 return EFI_INVALID_PARAMETER; 168 } 169 170 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer, This->Mode->IoAlign)) { 171 return EFI_INVALID_PARAMETER; 172 } 173 174 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer, This->Mode->IoAlign)) { 175 return EFI_INVALID_PARAMETER; 176 } 177 178 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->SenseData, This->Mode->IoAlign)) { 179 return EFI_INVALID_PARAMETER; 180 } 181 182 // 183 // For UFS 2.0 compatible device, 0 is always used to represent the location of the UFS device. 184 // 185 SetMem (mUfsTargetId, TARGET_MAX_BYTES, 0x00); 186 if ((Target == NULL) || (CompareMem(Target, mUfsTargetId, TARGET_MAX_BYTES) != 0)) { 187 return EFI_INVALID_PARAMETER; 188 } 189 190 // 191 // UFS 2.0 spec Section 10.6.7 - Translation of 8-bit UFS LUN to 64-bit SCSI LUN Address 192 // 0xC1 in the first 8 bits of the 64-bit address indicates a well known LUN address in the SAM SCSI format. 193 // The second 8 bits of the 64-bit address saves the corresponding 8-bit UFS LUN. 194 // 195 if ((UINT8)Lun == UFS_WLUN_PREFIX) { 196 UfsLun = BIT7 | (((UINT8*)&Lun)[1] & 0xFF); 197 } else if ((UINT8)Lun == 0) { 198 UfsLun = ((UINT8*)&Lun)[1] & 0xFF; 199 } else { 200 return EFI_INVALID_PARAMETER; 201 } 202 203 for (Index = 0; Index < UFS_MAX_LUNS; Index++) { 204 if ((Private->Luns.BitMask & (BIT0 << Index)) == 0) { 205 continue; 206 } 207 208 if (Private->Luns.Lun[Index] == UfsLun) { 209 break; 210 } 211 } 212 213 if (Index == UFS_MAX_LUNS) { 214 return EFI_INVALID_PARAMETER; 215 } 216 217 Status = UfsExecScsiCmds (Private, UfsLun, Packet, Event); 218 219 return Status; 220} 221 222/** 223 Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on a SCSI channel. These 224 can either be the list SCSI devices that are actually present on the SCSI channel, or the list of legal 225 Target Ids and LUNs for the SCSI channel. Regardless, the caller of this function must probe the 226 Target ID and LUN returned to see if a SCSI device is actually present at that location on the SCSI 227 channel. 228 229 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. 230 @param Target On input, a pointer to the Target ID (an array of size 231 TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel. 232 On output, a pointer to the Target ID (an array of 233 TARGET_MAX_BYTES) of the next SCSI device present on a SCSI 234 channel. An input value of 0xF(all bytes in the array are 0xF) in the 235 Target array retrieves the Target ID of the first SCSI device present on a 236 SCSI channel. 237 @param Lun On input, a pointer to the LUN of a SCSI device present on the SCSI 238 channel. On output, a pointer to the LUN of the next SCSI device present 239 on a SCSI channel. 240 241 @retval EFI_SUCCESS The Target ID and LUN of the next SCSI device on the SCSI 242 channel was returned in Target and Lun. 243 @retval EFI_INVALID_PARAMETER Target array is not all 0xF, and Target and Lun were 244 not returned on a previous call to GetNextTargetLun(). 245 @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel. 246 247**/ 248EFI_STATUS 249EFIAPI 250UfsPassThruGetNextTargetLun ( 251 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, 252 IN OUT UINT8 **Target, 253 IN OUT UINT64 *Lun 254 ) 255{ 256 UFS_PASS_THRU_PRIVATE_DATA *Private; 257 UINT8 UfsLun; 258 UINT16 Index; 259 UINT16 Next; 260 261 Private = UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS (This); 262 263 if (Target == NULL || Lun == NULL) { 264 return EFI_INVALID_PARAMETER; 265 } 266 267 if (*Target == NULL) { 268 return EFI_INVALID_PARAMETER; 269 } 270 271 UfsLun = 0; 272 SetMem (mUfsTargetId, TARGET_MAX_BYTES, 0xFF); 273 if (CompareMem (*Target, mUfsTargetId, TARGET_MAX_BYTES) == 0) { 274 // 275 // If the array is all 0xFF's, return the first exposed Lun to caller. 276 // 277 SetMem (*Target, TARGET_MAX_BYTES, 0x00); 278 for (Index = 0; Index < UFS_MAX_LUNS; Index++) { 279 if ((Private->Luns.BitMask & (BIT0 << Index)) != 0) { 280 UfsLun = Private->Luns.Lun[Index]; 281 break; 282 } 283 } 284 if (Index != UFS_MAX_LUNS) { 285 *Lun = 0; 286 if ((UfsLun & BIT7) == BIT7) { 287 ((UINT8*)Lun)[0] = UFS_WLUN_PREFIX; 288 ((UINT8*)Lun)[1] = UfsLun & ~BIT7; 289 } else { 290 ((UINT8*)Lun)[1] = UfsLun; 291 } 292 return EFI_SUCCESS; 293 } else { 294 return EFI_NOT_FOUND; 295 } 296 } 297 298 SetMem (mUfsTargetId, TARGET_MAX_BYTES, 0x00); 299 if (CompareMem (*Target, mUfsTargetId, TARGET_MAX_BYTES) == 0) { 300 if (((UINT8*)Lun)[0] == UFS_WLUN_PREFIX) { 301 UfsLun = BIT7 | (((UINT8*)Lun)[1] & 0xFF); 302 } else if (((UINT8*)Lun)[0] == 0) { 303 UfsLun = ((UINT8*)Lun)[1] & 0xFF; 304 } else { 305 return EFI_NOT_FOUND; 306 } 307 308 for (Index = 0; Index < UFS_MAX_LUNS; Index++) { 309 if ((Private->Luns.BitMask & (BIT0 << Index)) == 0) { 310 continue; 311 } 312 313 if (Private->Luns.Lun[Index] != UfsLun) { 314 continue; 315 } 316 317 for (Next = Index + 1; Next < UFS_MAX_LUNS; Next++) { 318 if ((Private->Luns.BitMask & (BIT0 << Next)) != 0) { 319 UfsLun = Private->Luns.Lun[Next]; 320 break; 321 } 322 } 323 324 if (Next == UFS_MAX_LUNS) { 325 return EFI_NOT_FOUND; 326 } else { 327 break; 328 } 329 } 330 331 if (Index != UFS_MAX_LUNS) { 332 *Lun = 0; 333 if ((UfsLun & BIT7) == BIT7) { 334 ((UINT8*)Lun)[0] = UFS_WLUN_PREFIX; 335 ((UINT8*)Lun)[1] = UfsLun & ~BIT7; 336 } else { 337 ((UINT8*)Lun)[1] = UfsLun; 338 } 339 return EFI_SUCCESS; 340 } else { 341 return EFI_NOT_FOUND; 342 } 343 } 344 345 return EFI_NOT_FOUND; 346} 347 348/** 349 Used to allocate and build a device path node for a SCSI device on a SCSI channel. 350 351 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. 352 @param Target The Target is an array of size TARGET_MAX_BYTES and it specifies the 353 Target ID of the SCSI device for which a device path node is to be 354 allocated and built. Transport drivers may chose to utilize a subset of 355 this size to suit the representation of targets. For example, a Fibre 356 Channel driver may use only 8 bytes (WWN) in the array to represent a 357 FC target. 358 @param Lun The LUN of the SCSI device for which a device path node is to be 359 allocated and built. 360 @param DevicePath A pointer to a single device path node that describes the SCSI device 361 specified by Target and Lun. This function is responsible for 362 allocating the buffer DevicePath with the boot service 363 AllocatePool(). It is the caller's responsibility to free 364 DevicePath when the caller is finished with DevicePath. 365 366 @retval EFI_SUCCESS The device path node that describes the SCSI device specified by 367 Target and Lun was allocated and returned in 368 DevicePath. 369 @retval EFI_INVALID_PARAMETER DevicePath is NULL. 370 @retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does not exist 371 on the SCSI channel. 372 @retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate DevicePath. 373 374**/ 375EFI_STATUS 376EFIAPI 377UfsPassThruBuildDevicePath ( 378 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, 379 IN UINT8 *Target, 380 IN UINT64 Lun, 381 IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath 382 ) 383{ 384 UFS_PASS_THRU_PRIVATE_DATA *Private; 385 EFI_DEV_PATH *DevicePathNode; 386 UINT8 UfsLun; 387 UINT16 Index; 388 389 Private = UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS (This); 390 391 // 392 // Validate parameters passed in. 393 // 394 SetMem (mUfsTargetId, TARGET_MAX_BYTES, 0x00); 395 if (CompareMem (Target, mUfsTargetId, TARGET_MAX_BYTES) != 0) { 396 return EFI_INVALID_PARAMETER; 397 } 398 399 if ((UINT8)Lun == UFS_WLUN_PREFIX) { 400 UfsLun = BIT7 | (((UINT8*)&Lun)[1] & 0xFF); 401 } else if ((UINT8)Lun == 0) { 402 UfsLun = ((UINT8*)&Lun)[1] & 0xFF; 403 } else { 404 return EFI_NOT_FOUND; 405 } 406 407 for (Index = 0; Index < UFS_MAX_LUNS; Index++) { 408 if ((Private->Luns.BitMask & (BIT0 << Index)) == 0) { 409 continue; 410 } 411 412 if (Private->Luns.Lun[Index] == UfsLun) { 413 break; 414 } 415 } 416 417 if (Index == UFS_MAX_LUNS) { 418 return EFI_NOT_FOUND; 419 } 420 421 DevicePathNode = AllocateCopyPool (sizeof (UFS_DEVICE_PATH), &mUfsDevicePathTemplate); 422 if (DevicePathNode == NULL) { 423 return EFI_OUT_OF_RESOURCES; 424 } 425 426 DevicePathNode->Ufs.Pun = 0; 427 DevicePathNode->Ufs.Lun = UfsLun; 428 429 *DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) DevicePathNode; 430 431 return EFI_SUCCESS; 432} 433 434/** 435 Used to translate a device path node to a Target ID and LUN. 436 437 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. 438 @param DevicePath A pointer to a single device path node that describes the SCSI device 439 on the SCSI channel. 440 @param Target A pointer to the Target Array which represents the ID of a SCSI device 441 on the SCSI channel. 442 @param Lun A pointer to the LUN of a SCSI device on the SCSI channel. 443 444 @retval EFI_SUCCESS DevicePath was successfully translated to a Target ID and 445 LUN, and they were returned in Target and Lun. 446 @retval EFI_INVALID_PARAMETER DevicePath or Target or Lun is NULL. 447 @retval EFI_NOT_FOUND A valid translation from DevicePath to a Target ID and LUN 448 does not exist. 449 @retval EFI_UNSUPPORTED This driver does not support the device path node type in 450 DevicePath. 451 452**/ 453EFI_STATUS 454EFIAPI 455UfsPassThruGetTargetLun ( 456 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, 457 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath, 458 OUT UINT8 **Target, 459 OUT UINT64 *Lun 460 ) 461{ 462 UFS_PASS_THRU_PRIVATE_DATA *Private; 463 EFI_DEV_PATH *DevicePathNode; 464 UINT8 Pun; 465 UINT8 UfsLun; 466 UINT16 Index; 467 468 Private = UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS (This); 469 470 // 471 // Validate parameters passed in. 472 // 473 if (DevicePath == NULL || Target == NULL || Lun == NULL) { 474 return EFI_INVALID_PARAMETER; 475 } 476 477 if (*Target == NULL) { 478 return EFI_INVALID_PARAMETER; 479 } 480 481 // 482 // Check whether the DevicePath belongs to SCSI_DEVICE_PATH 483 // 484 if ((DevicePath->Type != MESSAGING_DEVICE_PATH) || (DevicePath->SubType != MSG_UFS_DP) || 485 (DevicePathNodeLength(DevicePath) != sizeof(SCSI_DEVICE_PATH))) { 486 return EFI_UNSUPPORTED; 487 } 488 489 DevicePathNode = (EFI_DEV_PATH *) DevicePath; 490 491 Pun = (UINT8) DevicePathNode->Ufs.Pun; 492 UfsLun = (UINT8) DevicePathNode->Ufs.Lun; 493 494 if (Pun != 0) { 495 return EFI_NOT_FOUND; 496 } 497 498 for (Index = 0; Index < UFS_MAX_LUNS; Index++) { 499 if ((Private->Luns.BitMask & (BIT0 << Index)) == 0) { 500 continue; 501 } 502 503 if (Private->Luns.Lun[Index] == UfsLun) { 504 break; 505 } 506 } 507 508 if (Index == UFS_MAX_LUNS) { 509 return EFI_NOT_FOUND; 510 } 511 512 SetMem (*Target, TARGET_MAX_BYTES, 0x00); 513 *Lun = 0; 514 if ((UfsLun & BIT7) == BIT7) { 515 ((UINT8*)Lun)[0] = UFS_WLUN_PREFIX; 516 ((UINT8*)Lun)[1] = UfsLun & ~BIT7; 517 } else { 518 ((UINT8*)Lun)[1] = UfsLun; 519 } 520 return EFI_SUCCESS; 521} 522 523/** 524 Resets a SCSI channel. This operation resets all the SCSI devices connected to the SCSI channel. 525 526 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. 527 528 @retval EFI_SUCCESS The SCSI channel was reset. 529 @retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI channel. 530 @retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI channel. 531 @retval EFI_UNSUPPORTED The SCSI channel does not support a channel reset operation. 532 533**/ 534EFI_STATUS 535EFIAPI 536UfsPassThruResetChannel ( 537 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This 538 ) 539{ 540 // 541 // Return success directly then upper layer driver could think reset channel operation is done. 542 // 543 return EFI_SUCCESS; 544} 545 546/** 547 Resets a SCSI logical unit that is connected to a SCSI channel. 548 549 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. 550 @param Target The Target is an array of size TARGET_MAX_BYTE and it represents the 551 target port ID of the SCSI device containing the SCSI logical unit to 552 reset. Transport drivers may chose to utilize a subset of this array to suit 553 the representation of their targets. 554 @param Lun The LUN of the SCSI device to reset. 555 556 @retval EFI_SUCCESS The SCSI device specified by Target and Lun was reset. 557 @retval EFI_INVALID_PARAMETER Target or Lun is NULL. 558 @retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI device 559 specified by Target and Lun. 560 @retval EFI_UNSUPPORTED The SCSI channel does not support a target reset operation. 561 @retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI device 562 specified by Target and Lun. 563 564**/ 565EFI_STATUS 566EFIAPI 567UfsPassThruResetTargetLun ( 568 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, 569 IN UINT8 *Target, 570 IN UINT64 Lun 571 ) 572{ 573 // 574 // Return success directly then upper layer driver could think reset target LUN operation is done. 575 // 576 return EFI_SUCCESS; 577} 578 579/** 580 Used to retrieve the list of legal Target IDs for SCSI devices on a SCSI channel. These can either 581 be the list SCSI devices that are actually present on the SCSI channel, or the list of legal Target IDs 582 for the SCSI channel. Regardless, the caller of this function must probe the Target ID returned to 583 see if a SCSI device is actually present at that location on the SCSI channel. 584 585 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. 586 @param Target (TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel. 587 On output, a pointer to the Target ID (an array of 588 TARGET_MAX_BYTES) of the next SCSI device present on a SCSI 589 channel. An input value of 0xF(all bytes in the array are 0xF) in the 590 Target array retrieves the Target ID of the first SCSI device present on a 591 SCSI channel. 592 593 @retval EFI_SUCCESS The Target ID of the next SCSI device on the SCSI 594 channel was returned in Target. 595 @retval EFI_INVALID_PARAMETER Target or Lun is NULL. 596 @retval EFI_TIMEOUT Target array is not all 0xF, and Target was not 597 returned on a previous call to GetNextTarget(). 598 @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel. 599 600**/ 601EFI_STATUS 602EFIAPI 603UfsPassThruGetNextTarget ( 604 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, 605 IN OUT UINT8 **Target 606 ) 607{ 608 if (Target == NULL || *Target == NULL) { 609 return EFI_INVALID_PARAMETER; 610 } 611 612 SetMem (mUfsTargetId, TARGET_MAX_BYTES, 0xFF); 613 if (CompareMem(*Target, mUfsTargetId, TARGET_MAX_BYTES) == 0) { 614 SetMem (*Target, TARGET_MAX_BYTES, 0x00); 615 return EFI_SUCCESS; 616 } 617 618 return EFI_NOT_FOUND; 619} 620 621/** 622 Tests to see if this driver supports a given controller. If a child device is provided, 623 it further tests to see if this driver supports creating a handle for the specified child device. 624 625 This function checks to see if the driver specified by This supports the device specified by 626 ControllerHandle. Drivers will typically use the device path attached to 627 ControllerHandle and/or the services from the bus I/O abstraction attached to 628 ControllerHandle to determine if the driver supports ControllerHandle. This function 629 may be called many times during platform initialization. In order to reduce boot times, the tests 630 performed by this function must be very small, and take as little time as possible to execute. This 631 function must not change the state of any hardware devices, and this function must be aware that the 632 device specified by ControllerHandle may already be managed by the same driver or a 633 different driver. This function must match its calls to AllocatePages() with FreePages(), 634 AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol(). 635 Since ControllerHandle may have been previously started by the same driver, if a protocol is 636 already in the opened state, then it must not be closed with CloseProtocol(). This is required 637 to guarantee the state of ControllerHandle is not modified by this function. 638 639 @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. 640 @param[in] ControllerHandle The handle of the controller to test. This handle 641 must support a protocol interface that supplies 642 an I/O abstraction to the driver. 643 @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This 644 parameter is ignored by device drivers, and is optional for bus 645 drivers. For bus drivers, if this parameter is not NULL, then 646 the bus driver must determine if the bus controller specified 647 by ControllerHandle and the child controller specified 648 by RemainingDevicePath are both supported by this 649 bus driver. 650 651 @retval EFI_SUCCESS The device specified by ControllerHandle and 652 RemainingDevicePath is supported by the driver specified by This. 653 @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and 654 RemainingDevicePath is already being managed by the driver 655 specified by This. 656 @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and 657 RemainingDevicePath is already being managed by a different 658 driver or an application that requires exclusive access. 659 Currently not implemented. 660 @retval EFI_UNSUPPORTED The device specified by ControllerHandle and 661 RemainingDevicePath is not supported by the driver specified by This. 662**/ 663EFI_STATUS 664EFIAPI 665UfsPassThruDriverBindingSupported ( 666 IN EFI_DRIVER_BINDING_PROTOCOL *This, 667 IN EFI_HANDLE Controller, 668 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath 669 ) 670{ 671 EFI_STATUS Status; 672 EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath; 673 EDKII_UFS_HOST_CONTROLLER_PROTOCOL *UfsHostController; 674 675 // 676 // Ufs Pass Thru driver is a device driver, and should ingore the 677 // "RemainingDevicePath" according to UEFI spec 678 // 679 Status = gBS->OpenProtocol ( 680 Controller, 681 &gEfiDevicePathProtocolGuid, 682 (VOID *) &ParentDevicePath, 683 This->DriverBindingHandle, 684 Controller, 685 EFI_OPEN_PROTOCOL_BY_DRIVER 686 ); 687 if (EFI_ERROR (Status)) { 688 // 689 // EFI_ALREADY_STARTED is also an error 690 // 691 return Status; 692 } 693 // 694 // Close the protocol because we don't use it here 695 // 696 gBS->CloseProtocol ( 697 Controller, 698 &gEfiDevicePathProtocolGuid, 699 This->DriverBindingHandle, 700 Controller 701 ); 702 703 Status = gBS->OpenProtocol ( 704 Controller, 705 &gEdkiiUfsHostControllerProtocolGuid, 706 (VOID **) &UfsHostController, 707 This->DriverBindingHandle, 708 Controller, 709 EFI_OPEN_PROTOCOL_BY_DRIVER 710 ); 711 712 if (EFI_ERROR (Status)) { 713 // 714 // EFI_ALREADY_STARTED is also an error 715 // 716 return Status; 717 } 718 719 // 720 // Close the I/O Abstraction(s) used to perform the supported test 721 // 722 gBS->CloseProtocol ( 723 Controller, 724 &gEdkiiUfsHostControllerProtocolGuid, 725 This->DriverBindingHandle, 726 Controller 727 ); 728 729 return EFI_SUCCESS; 730} 731 732/** 733 Starts a device controller or a bus controller. 734 735 The Start() function is designed to be invoked from the EFI boot service ConnectController(). 736 As a result, much of the error checking on the parameters to Start() has been moved into this 737 common boot service. It is legal to call Start() from other locations, 738 but the following calling restrictions must be followed or the system behavior will not be deterministic. 739 1. ControllerHandle must be a valid EFI_HANDLE. 740 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned 741 EFI_DEVICE_PATH_PROTOCOL. 742 3. Prior to calling Start(), the Supported() function for the driver specified by This must 743 have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS. 744 745 @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. 746 @param[in] ControllerHandle The handle of the controller to start. This handle 747 must support a protocol interface that supplies 748 an I/O abstraction to the driver. 749 @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This 750 parameter is ignored by device drivers, and is optional for bus 751 drivers. For a bus driver, if this parameter is NULL, then handles 752 for all the children of Controller are created by this driver. 753 If this parameter is not NULL and the first Device Path Node is 754 not the End of Device Path Node, then only the handle for the 755 child device specified by the first Device Path Node of 756 RemainingDevicePath is created by this driver. 757 If the first Device Path Node of RemainingDevicePath is 758 the End of Device Path Node, no child handle is created by this 759 driver. 760 761 @retval EFI_SUCCESS The device was started. 762 @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented. 763 @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. 764 @retval Others The driver failded to start the device. 765 766**/ 767EFI_STATUS 768EFIAPI 769UfsPassThruDriverBindingStart ( 770 IN EFI_DRIVER_BINDING_PROTOCOL *This, 771 IN EFI_HANDLE Controller, 772 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath 773 ) 774{ 775 EFI_STATUS Status; 776 EDKII_UFS_HOST_CONTROLLER_PROTOCOL *UfsHc; 777 UFS_PASS_THRU_PRIVATE_DATA *Private; 778 UINTN UfsHcBase; 779 UINT32 Index; 780 UFS_CONFIG_DESC Config; 781 782 Status = EFI_SUCCESS; 783 UfsHc = NULL; 784 Private = NULL; 785 UfsHcBase = 0; 786 787 DEBUG ((EFI_D_INFO, "==UfsPassThru Start== Controller = %x\n", Controller)); 788 789 Status = gBS->OpenProtocol ( 790 Controller, 791 &gEdkiiUfsHostControllerProtocolGuid, 792 (VOID **) &UfsHc, 793 This->DriverBindingHandle, 794 Controller, 795 EFI_OPEN_PROTOCOL_BY_DRIVER 796 ); 797 798 if (EFI_ERROR (Status)) { 799 DEBUG ((EFI_D_ERROR, "Open Ufs Host Controller Protocol Error, Status = %r\n", Status)); 800 goto Error; 801 } 802 803 // 804 // Get the UFS Host Controller MMIO Bar Base Address. 805 // 806 Status = UfsHc->GetUfsHcMmioBar (UfsHc, &UfsHcBase); 807 if (EFI_ERROR (Status)) { 808 DEBUG ((EFI_D_ERROR, "Get Ufs Host Controller Mmio Bar Error, Status = %r\n", Status)); 809 goto Error; 810 } 811 812 // 813 // Initialize Ufs Pass Thru private data for managed UFS Host Controller. 814 // 815 Private = AllocateCopyPool (sizeof (UFS_PASS_THRU_PRIVATE_DATA), &gUfsPassThruTemplate); 816 if (Private == NULL) { 817 DEBUG ((EFI_D_ERROR, "Unable to allocate Ufs Pass Thru private data\n")); 818 Status = EFI_OUT_OF_RESOURCES; 819 goto Error; 820 } 821 822 Private->ExtScsiPassThru.Mode = &Private->ExtScsiPassThruMode; 823 Private->UfsHostController = UfsHc; 824 Private->UfsHcBase = UfsHcBase; 825 InitializeListHead (&Private->Queue); 826 827 // 828 // Initialize UFS Host Controller H/W. 829 // 830 Status = UfsControllerInit (Private); 831 if (EFI_ERROR (Status)) { 832 DEBUG ((EFI_D_ERROR, "Ufs Host Controller Initialization Error, Status = %r\n", Status)); 833 goto Error; 834 } 835 836 // 837 // UFS 2.0 spec Section 13.1.3.3: 838 // At the end of the UFS Interconnect Layer initialization on both host and device side, 839 // the host shall send a NOP OUT UPIU to verify that the device UTP Layer is ready. 840 // 841 Status = UfsExecNopCmds (Private); 842 if (EFI_ERROR (Status)) { 843 DEBUG ((EFI_D_ERROR, "Ufs Sending NOP IN command Error, Status = %r\n", Status)); 844 goto Error; 845 } 846 847 // 848 // The host enables the device initialization completion by setting fDeviceInit flag. 849 // 850 Status = UfsSetFlag (Private, UfsFlagDevInit); 851 if (EFI_ERROR (Status)) { 852 DEBUG ((EFI_D_ERROR, "Ufs Set fDeviceInit Flag Error, Status = %r\n", Status)); 853 goto Error; 854 } 855 856 MicroSecondDelay (100000); 857 858 // 859 // Get Ufs Device's Lun Info by reading Configuration Descriptor. 860 // 861 Status = UfsRwDeviceDesc (Private, TRUE, UfsConfigDesc, 0, 0, &Config, sizeof (UFS_CONFIG_DESC)); 862 if (EFI_ERROR (Status)) { 863 DEBUG ((EFI_D_ERROR, "Ufs Get Configuration Descriptor Error, Status = %r\n", Status)); 864 goto Error; 865 } 866 867 // 868 // Check if 8 common luns are active and set corresponding bit mask. 869 // TODO: Parse device descriptor to decide if exposing RPMB LUN to upper layer for authentication access. 870 // 871 for (Index = 0; Index < 8; Index++) { 872 if (Config.UnitDescConfParams[Index].LunEn != 0) { 873 Private->Luns.BitMask |= (BIT0 << Index); 874 DEBUG ((EFI_D_INFO, "Ufs Lun %d is enabled\n", Index)); 875 } 876 } 877 878 // 879 // Start the asynchronous interrupt monitor 880 // 881 Status = gBS->CreateEvent ( 882 EVT_TIMER | EVT_NOTIFY_SIGNAL, 883 TPL_NOTIFY, 884 ProcessAsyncTaskList, 885 Private, 886 &Private->TimerEvent 887 ); 888 if (EFI_ERROR (Status)) { 889 DEBUG ((EFI_D_ERROR, "Ufs Create Async Tasks Event Error, Status = %r\n", Status)); 890 goto Error; 891 } 892 893 Status = gBS->SetTimer ( 894 Private->TimerEvent, 895 TimerPeriodic, 896 UFS_HC_ASYNC_TIMER 897 ); 898 if (EFI_ERROR (Status)) { 899 DEBUG ((EFI_D_ERROR, "Ufs Set Periodic Timer Error, Status = %r\n", Status)); 900 goto Error; 901 } 902 903 Status = gBS->InstallProtocolInterface ( 904 &Controller, 905 &gEfiExtScsiPassThruProtocolGuid, 906 EFI_NATIVE_INTERFACE, 907 &(Private->ExtScsiPassThru) 908 ); 909 ASSERT_EFI_ERROR (Status); 910 911 return EFI_SUCCESS; 912 913Error: 914 if (Private != NULL) { 915 if (Private->TmrlMapping != NULL) { 916 UfsHc->Unmap (UfsHc, Private->TmrlMapping); 917 } 918 if (Private->UtpTmrlBase != NULL) { 919 UfsHc->FreeBuffer (UfsHc, EFI_SIZE_TO_PAGES (Private->Nutmrs * sizeof (UTP_TMRD)), Private->UtpTmrlBase); 920 } 921 922 if (Private->TrlMapping != NULL) { 923 UfsHc->Unmap (UfsHc, Private->TrlMapping); 924 } 925 if (Private->UtpTrlBase != NULL) { 926 UfsHc->FreeBuffer (UfsHc, EFI_SIZE_TO_PAGES (Private->Nutrs * sizeof (UTP_TMRD)), Private->UtpTrlBase); 927 } 928 929 if (Private->TimerEvent != NULL) { 930 gBS->CloseEvent (Private->TimerEvent); 931 } 932 933 FreePool (Private); 934 } 935 936 if (UfsHc != NULL) { 937 gBS->CloseProtocol ( 938 Controller, 939 &gEdkiiUfsHostControllerProtocolGuid, 940 This->DriverBindingHandle, 941 Controller 942 ); 943 } 944 945 return Status; 946} 947 948/** 949 Stops a device controller or a bus controller. 950 951 The Stop() function is designed to be invoked from the EFI boot service DisconnectController(). 952 As a result, much of the error checking on the parameters to Stop() has been moved 953 into this common boot service. It is legal to call Stop() from other locations, 954 but the following calling restrictions must be followed or the system behavior will not be deterministic. 955 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this 956 same driver's Start() function. 957 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid 958 EFI_HANDLE. In addition, all of these handles must have been created in this driver's 959 Start() function, and the Start() function must have called OpenProtocol() on 960 ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER. 961 962 @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. 963 @param[in] ControllerHandle A handle to the device being stopped. The handle must 964 support a bus specific I/O protocol for the driver 965 to use to stop the device. 966 @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer. 967 @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL 968 if NumberOfChildren is 0. 969 970 @retval EFI_SUCCESS The device was stopped. 971 @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error. 972 973**/ 974EFI_STATUS 975EFIAPI 976UfsPassThruDriverBindingStop ( 977 IN EFI_DRIVER_BINDING_PROTOCOL *This, 978 IN EFI_HANDLE Controller, 979 IN UINTN NumberOfChildren, 980 IN EFI_HANDLE *ChildHandleBuffer 981 ) 982{ 983 EFI_STATUS Status; 984 UFS_PASS_THRU_PRIVATE_DATA *Private; 985 EFI_EXT_SCSI_PASS_THRU_PROTOCOL *ExtScsiPassThru; 986 EDKII_UFS_HOST_CONTROLLER_PROTOCOL *UfsHc; 987 UFS_PASS_THRU_TRANS_REQ *TransReq; 988 LIST_ENTRY *Entry; 989 LIST_ENTRY *NextEntry; 990 991 DEBUG ((EFI_D_INFO, "==UfsPassThru Stop== Controller Controller = %x\n", Controller)); 992 993 Status = gBS->OpenProtocol ( 994 Controller, 995 &gEfiExtScsiPassThruProtocolGuid, 996 (VOID **) &ExtScsiPassThru, 997 This->DriverBindingHandle, 998 Controller, 999 EFI_OPEN_PROTOCOL_GET_PROTOCOL 1000 ); 1001 1002 if (EFI_ERROR (Status)) { 1003 return EFI_DEVICE_ERROR; 1004 } 1005 1006 Private = UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS (ExtScsiPassThru); 1007 UfsHc = Private->UfsHostController; 1008 1009 // 1010 // Cleanup the resources of I/O requests in the async I/O queue 1011 // 1012 if (!IsListEmpty(&Private->Queue)) { 1013 EFI_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Private->Queue) { 1014 TransReq = UFS_PASS_THRU_TRANS_REQ_FROM_THIS (Entry); 1015 1016 // 1017 // TODO: Should find/add a proper host adapter return status for this 1018 // case. 1019 // 1020 TransReq->Packet->HostAdapterStatus = 1021 EFI_EXT_SCSI_STATUS_HOST_ADAPTER_PHASE_ERROR; 1022 1023 SignalCallerEvent (Private, TransReq); 1024 } 1025 } 1026 1027 Status = gBS->UninstallProtocolInterface ( 1028 Controller, 1029 &gEfiExtScsiPassThruProtocolGuid, 1030 &(Private->ExtScsiPassThru) 1031 ); 1032 1033 if (EFI_ERROR (Status)) { 1034 return EFI_DEVICE_ERROR; 1035 } 1036 1037 // 1038 // Stop Ufs Host Controller 1039 // 1040 Status = UfsControllerStop (Private); 1041 ASSERT_EFI_ERROR (Status); 1042 1043 if (Private->TmrlMapping != NULL) { 1044 UfsHc->Unmap (UfsHc, Private->TmrlMapping); 1045 } 1046 if (Private->UtpTmrlBase != NULL) { 1047 UfsHc->FreeBuffer (UfsHc, EFI_SIZE_TO_PAGES (Private->Nutmrs * sizeof (UTP_TMRD)), Private->UtpTmrlBase); 1048 } 1049 1050 if (Private->TrlMapping != NULL) { 1051 UfsHc->Unmap (UfsHc, Private->TrlMapping); 1052 } 1053 if (Private->UtpTrlBase != NULL) { 1054 UfsHc->FreeBuffer (UfsHc, EFI_SIZE_TO_PAGES (Private->Nutrs * sizeof (UTP_TMRD)), Private->UtpTrlBase); 1055 } 1056 1057 if (Private->TimerEvent != NULL) { 1058 gBS->CloseEvent (Private->TimerEvent); 1059 } 1060 1061 FreePool (Private); 1062 1063 // 1064 // Close protocols opened by UfsPassThru controller driver 1065 // 1066 gBS->CloseProtocol ( 1067 Controller, 1068 &gEdkiiUfsHostControllerProtocolGuid, 1069 This->DriverBindingHandle, 1070 Controller 1071 ); 1072 1073 return Status; 1074} 1075 1076 1077/** 1078 The user Entry Point for module UfsPassThru. The user code starts with this function. 1079 1080 @param[in] ImageHandle The firmware allocated handle for the EFI image. 1081 @param[in] SystemTable A pointer to the EFI System Table. 1082 1083 @retval EFI_SUCCESS The entry point is executed successfully. 1084 @retval other Some error occurs when executing this entry point. 1085 1086**/ 1087EFI_STATUS 1088EFIAPI 1089InitializeUfsPassThru ( 1090 IN EFI_HANDLE ImageHandle, 1091 IN EFI_SYSTEM_TABLE *SystemTable 1092 ) 1093{ 1094 EFI_STATUS Status; 1095 1096 // 1097 // Install driver model protocol(s). 1098 // 1099 Status = EfiLibInstallDriverBindingComponentName2 ( 1100 ImageHandle, 1101 SystemTable, 1102 &gUfsPassThruDriverBinding, 1103 ImageHandle, 1104 &gUfsPassThruComponentName, 1105 &gUfsPassThruComponentName2 1106 ); 1107 ASSERT_EFI_ERROR (Status); 1108 1109 return Status; 1110} 1111