1 /** @file 2 Private Include file for IdeBus PEIM. 3 4 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> 5 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions 8 of the BSD License which accompanies this distribution. The 9 full text of the license may be found at 10 http://opensource.org/licenses/bsd-license.php 11 12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 14 15 **/ 16 17 #ifndef _RECOVERY_ATAPI_H_ 18 #define _RECOVERY_ATAPI_H_ 19 20 #include <PiPei.h> 21 22 #include <Ppi/BlockIo.h> 23 #include <Ppi/AtaController.h> 24 25 #include <Library/DebugLib.h> 26 #include <Library/TimerLib.h> 27 #include <Library/PeimEntryPoint.h> 28 #include <Library/PeiServicesLib.h> 29 #include <Library/BaseMemoryLib.h> 30 #include <Library/IoLib.h> 31 #include <Library/PeiServicesTablePointerLib.h> 32 #include <Library/MemoryAllocationLib.h> 33 #include <Library/PcdLib.h> 34 35 36 #include <IndustryStandard/Atapi.h> 37 38 #define MAX_SENSE_KEY_COUNT 6 39 #define MAX_IDE_CHANNELS 4 // Ide and Sata Primary, Secondary Channel. 40 #define MAX_IDE_DEVICES 8 // Ide, Sata Primary, Secondary and Master, Slave device. 41 42 typedef enum { 43 IdePrimary = 0, 44 IdeSecondary = 1, 45 IdeMaxChannel = 2 46 } EFI_IDE_CHANNEL; 47 48 typedef enum { 49 IdeMaster = 0, 50 IdeSlave = 1, 51 IdeMaxDevice = 2 52 } EFI_IDE_DEVICE; 53 54 // 55 // IDE Registers 56 // 57 typedef union { 58 UINT16 Command; /* when write */ 59 UINT16 Status; /* when read */ 60 } IDE_CMD_OR_STATUS; 61 62 typedef union { 63 UINT16 Error; /* when read */ 64 UINT16 Feature; /* when write */ 65 } IDE_ERROR_OR_FEATURE; 66 67 typedef union { 68 UINT16 AltStatus; /* when read */ 69 UINT16 DeviceControl; /* when write */ 70 } IDE_ALTSTATUS_OR_DEVICECONTROL; 71 72 // 73 // IDE registers set 74 // 75 typedef struct { 76 UINT16 Data; 77 IDE_ERROR_OR_FEATURE Reg1; 78 UINT16 SectorCount; 79 UINT16 SectorNumber; 80 UINT16 CylinderLsb; 81 UINT16 CylinderMsb; 82 UINT16 Head; 83 IDE_CMD_OR_STATUS Reg; 84 85 IDE_ALTSTATUS_OR_DEVICECONTROL Alt; 86 UINT16 DriveAddress; 87 } IDE_BASE_REGISTERS; 88 89 typedef struct { 90 91 UINTN DevicePosition; 92 EFI_PEI_BLOCK_IO_MEDIA MediaInfo; 93 94 } PEI_ATAPI_DEVICE_INFO; 95 96 #define ATAPI_BLK_IO_DEV_SIGNATURE SIGNATURE_32 ('a', 'b', 'i', 'o') 97 typedef struct { 98 UINTN Signature; 99 100 EFI_PEI_RECOVERY_BLOCK_IO_PPI AtapiBlkIo; 101 EFI_PEI_PPI_DESCRIPTOR PpiDescriptor; 102 PEI_ATA_CONTROLLER_PPI *AtaControllerPpi; 103 104 UINTN DeviceCount; 105 PEI_ATAPI_DEVICE_INFO DeviceInfo[MAX_IDE_DEVICES]; //for max 8 device 106 IDE_BASE_REGISTERS IdeIoPortReg[MAX_IDE_CHANNELS]; //for max 4 channel. 107 } ATAPI_BLK_IO_DEV; 108 109 #define PEI_RECOVERY_ATAPI_FROM_BLKIO_THIS(a) CR (a, ATAPI_BLK_IO_DEV, AtapiBlkIo, ATAPI_BLK_IO_DEV_SIGNATURE) 110 111 112 #define STALL_1_MILLI_SECOND 1000 // stall 1 ms 113 #define STALL_1_SECONDS 1000 * STALL_1_MILLI_SECOND 114 115 // 116 // Time Out Value For IDE Device Polling 117 // 118 // ATATIMEOUT is used for waiting time out for ATA device 119 // 120 #define ATATIMEOUT 1000 // 1 second 121 // ATAPITIMEOUT is used for waiting operation 122 // except read and write time out for ATAPI device 123 // 124 #define ATAPITIMEOUT 1000 // 1 second 125 // ATAPILONGTIMEOUT is used for waiting read and 126 // write operation timeout for ATAPI device 127 // 128 #define CDROMLONGTIMEOUT 2000 // 2 seconds 129 #define ATAPILONGTIMEOUT 5000 // 5 seconds 130 131 // 132 // PEI Recovery Block I/O PPI 133 // 134 135 /** 136 Gets the count of block I/O devices that one specific block driver detects. 137 138 This function is used for getting the count of block I/O devices that one 139 specific block driver detects. To the PEI ATAPI driver, it returns the number 140 of all the detected ATAPI devices it detects during the enumeration process. 141 To the PEI legacy floppy driver, it returns the number of all the legacy 142 devices it finds during its enumeration process. If no device is detected, 143 then the function will return zero. 144 145 @param[in] PeiServices General-purpose services that are available 146 to every PEIM. 147 @param[in] This Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI 148 instance. 149 @param[out] NumberBlockDevices The number of block I/O devices discovered. 150 151 @retval EFI_SUCCESS Operation performed successfully. 152 153 **/ 154 EFI_STATUS 155 EFIAPI 156 AtapiGetNumberOfBlockDevices ( 157 IN EFI_PEI_SERVICES **PeiServices, 158 IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *This, 159 OUT UINTN *NumberBlockDevices 160 ); 161 162 /** 163 Gets a block device's media information. 164 165 This function will provide the caller with the specified block device's media 166 information. If the media changes, calling this function will update the media 167 information accordingly. 168 169 @param[in] PeiServices General-purpose services that are available to every 170 PEIM 171 @param[in] This Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance. 172 @param[in] DeviceIndex Specifies the block device to which the function wants 173 to talk. Because the driver that implements Block I/O 174 PPIs will manage multiple block devices, the PPIs that 175 want to talk to a single device must specify the 176 device index that was assigned during the enumeration 177 process. This index is a number from one to 178 NumberBlockDevices. 179 @param[out] MediaInfo The media information of the specified block media. 180 The caller is responsible for the ownership of this 181 data structure. 182 183 @retval EFI_SUCCESS Media information about the specified block device 184 was obtained successfully. 185 @retval EFI_DEVICE_ERROR Cannot get the media information due to a hardware 186 error. 187 @retval Others Other failure occurs. 188 189 **/ 190 EFI_STATUS 191 EFIAPI 192 AtapiGetBlockDeviceMediaInfo ( 193 IN EFI_PEI_SERVICES **PeiServices, 194 IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *This, 195 IN UINTN DeviceIndex, 196 OUT EFI_PEI_BLOCK_IO_MEDIA *MediaInfo 197 ); 198 199 /** 200 Reads the requested number of blocks from the specified block device. 201 202 The function reads the requested number of blocks from the device. All the 203 blocks are read, or an error is returned. If there is no media in the device, 204 the function returns EFI_NO_MEDIA. 205 206 @param[in] PeiServices General-purpose services that are available to 207 every PEIM. 208 @param[in] This Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance. 209 @param[in] DeviceIndex Specifies the block device to which the function wants 210 to talk. Because the driver that implements Block I/O 211 PPIs will manage multiple block devices, the PPIs that 212 want to talk to a single device must specify the device 213 index that was assigned during the enumeration process. 214 This index is a number from one to NumberBlockDevices. 215 @param[in] StartLBA The starting logical block address (LBA) to read from 216 on the device 217 @param[in] BufferSize The size of the Buffer in bytes. This number must be 218 a multiple of the intrinsic block size of the device. 219 @param[out] Buffer A pointer to the destination buffer for the data. 220 The caller is responsible for the ownership of the 221 buffer. 222 223 @retval EFI_SUCCESS The data was read correctly from the device. 224 @retval EFI_DEVICE_ERROR The device reported an error while attempting 225 to perform the read operation. 226 @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not 227 valid, or the buffer is not properly aligned. 228 @retval EFI_NO_MEDIA There is no media in the device. 229 @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of 230 the intrinsic block size of the device. 231 232 **/ 233 EFI_STATUS 234 EFIAPI 235 AtapiReadBlocks ( 236 IN EFI_PEI_SERVICES **PeiServices, 237 IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *This, 238 IN UINTN DeviceIndex, 239 IN EFI_PEI_LBA StartLBA, 240 IN UINTN BufferSize, 241 OUT VOID *Buffer 242 ); 243 244 // 245 // Internal functions 246 // 247 248 /** 249 Enumerate Atapi devices. 250 251 This function is used to enumerate Atatpi device in Ide channel. 252 253 @param[in] AtapiBlkIoDev A pointer to atapi block IO device 254 255 **/ 256 VOID 257 AtapiEnumerateDevices ( 258 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev 259 ); 260 261 /** 262 Detect Atapi devices. 263 264 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 265 @param[in] DevicePosition An integer to signify device position. 266 @param[out] MediaInfo The media information of the specified block media. 267 268 @retval TRUE Atapi device exists in specified position. 269 @retval FALSE Atapi device does not exist in specified position. 270 271 **/ 272 BOOLEAN 273 DiscoverAtapiDevice ( 274 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 275 IN UINTN DevicePosition, 276 OUT EFI_PEI_BLOCK_IO_MEDIA *MediaInfo 277 ); 278 279 /** 280 Detect if an IDE controller exists in specified position. 281 282 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 283 @param[in] DevicePosition An integer to signify device position. 284 285 @retval TRUE The Atapi device exists. 286 @retval FALSE The Atapi device does not present. 287 288 **/ 289 BOOLEAN 290 DetectIDEController ( 291 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 292 IN UINTN DevicePosition 293 ); 294 295 /** 296 Wait specified time interval to poll for BSY bit clear in the Status Register. 297 298 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 299 @param[in] IdeIoRegisters A pointer to IDE IO registers. 300 @param[in] TimeoutInMilliSeconds Time specified in milliseconds. 301 302 @retval EFI_SUCCESS BSY bit is cleared in the specified time interval. 303 @retval EFI_TIMEOUT BSY bit is not cleared in the specified time interval. 304 305 **/ 306 EFI_STATUS 307 WaitForBSYClear ( 308 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 309 IN IDE_BASE_REGISTERS *IdeIoRegisters, 310 IN UINTN TimeoutInMilliSeconds 311 ); 312 313 /** 314 Wait specified time interval to poll for DRDY bit set in the Status register. 315 316 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 317 @param[in] IdeIoRegisters A pointer to IDE IO registers. 318 @param[in] TimeoutInMilliSeconds Time specified in milliseconds. 319 320 @retval EFI_SUCCESS DRDY bit is set in the specified time interval. 321 @retval EFI_TIMEOUT DRDY bit is not set in the specified time interval. 322 323 **/ 324 EFI_STATUS 325 DRDYReady ( 326 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 327 IN IDE_BASE_REGISTERS *IdeIoRegisters, 328 IN UINTN TimeoutInMilliSeconds 329 ); 330 331 /** 332 Wait specified time interval to poll for DRQ bit clear in the Status Register. 333 334 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 335 @param[in] IdeIoRegisters A pointer to IDE IO registers. 336 @param[in] TimeoutInMilliSeconds Time specified in milliseconds. 337 338 @retval EFI_SUCCESS DRQ bit is cleared in the specified time interval. 339 @retval EFI_TIMEOUT DRQ bit is not cleared in the specified time interval. 340 341 **/ 342 EFI_STATUS 343 DRQClear ( 344 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 345 IN IDE_BASE_REGISTERS *IdeIoRegisters, 346 IN UINTN TimeoutInMilliSeconds 347 ); 348 349 /** 350 Wait specified time interval to poll for DRQ bit clear in the Alternate Status Register. 351 352 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 353 @param[in] IdeIoRegisters A pointer to IDE IO registers. 354 @param[in] TimeoutInMilliSeconds Time specified in milliseconds. 355 356 @retval EFI_SUCCESS DRQ bit is cleared in the specified time interval. 357 @retval EFI_TIMEOUT DRQ bit is not cleared in the specified time interval. 358 359 **/ 360 EFI_STATUS 361 DRQClear2 ( 362 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 363 IN IDE_BASE_REGISTERS *IdeIoRegisters, 364 IN UINTN TimeoutInMilliSeconds 365 ); 366 367 /** 368 Wait specified time interval to poll for DRQ bit set in the Status Register. 369 370 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 371 @param[in] IdeIoRegisters A pointer to IDE IO registers. 372 @param[in] TimeoutInMilliSeconds Time specified in milliseconds. 373 374 @retval EFI_SUCCESS DRQ bit is set in the specified time interval. 375 @retval EFI_TIMEOUT DRQ bit is not set in the specified time interval. 376 @retval EFI_ABORTED Operation Aborted. 377 378 **/ 379 EFI_STATUS 380 DRQReady ( 381 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 382 IN IDE_BASE_REGISTERS *IdeIoRegisters, 383 IN UINTN TimeoutInMilliSeconds 384 ); 385 386 /** 387 Wait specified time interval to poll for DRQ bit set in the Alternate Status Register. 388 389 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 390 @param[in] IdeIoRegisters A pointer to IDE IO registers. 391 @param[in] TimeoutInMilliSeconds Time specified in milliseconds. 392 393 @retval EFI_SUCCESS DRQ bit is set in the specified time interval. 394 @retval EFI_TIMEOUT DRQ bit is not set in the specified time interval. 395 @retval EFI_ABORTED Operation Aborted. 396 397 **/ 398 EFI_STATUS 399 DRQReady2 ( 400 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 401 IN IDE_BASE_REGISTERS *IdeIoRegisters, 402 IN UINTN TimeoutInMilliSeconds 403 ); 404 405 /** 406 Check if there is an error in Status Register. 407 408 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 409 @param[in] StatusReg The address to IDE IO registers. 410 411 @retval EFI_SUCCESS Operation success. 412 @retval EFI_DEVICE_ERROR Device error. 413 414 **/ 415 EFI_STATUS 416 CheckErrorStatus ( 417 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 418 IN UINT16 StatusReg 419 ); 420 421 /** 422 Idendify Atapi devices. 423 424 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 425 @param[in] DevicePosition An integer to signify device position. 426 427 @retval EFI_SUCCESS Identify successfully. 428 @retval EFI_DEVICE_ERROR Device cannot be identified successfully. 429 430 **/ 431 EFI_STATUS 432 ATAPIIdentify ( 433 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 434 IN UINTN DevicePosition 435 ); 436 437 /** 438 Sends out ATAPI Test Unit Ready Packet Command to the specified device 439 to find out whether device is accessible. 440 441 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 442 @param[in] DevicePosition An integer to signify device position. 443 444 @retval EFI_SUCCESS TestUnit command executed successfully. 445 @retval EFI_DEVICE_ERROR Device cannot be executed TestUnit command successfully. 446 447 **/ 448 EFI_STATUS 449 TestUnitReady ( 450 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 451 IN UINTN DevicePosition 452 ) ; 453 454 /** 455 Send out ATAPI commands conforms to the Packet Command with PIO Data In Protocol. 456 457 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 458 @param[in] DevicePosition An integer to signify device position. 459 @param[in] Packet A pointer to ATAPI command packet. 460 @param[in] Buffer Buffer to contain requested transfer data from device. 461 @param[in] ByteCount Requested transfer data length. 462 @param[in] TimeoutInMilliSeconds Time out value, in unit of milliseconds. 463 464 @retval EFI_SUCCESS Command executed successfully. 465 @retval EFI_DEVICE_ERROR Device cannot be executed command successfully. 466 467 **/ 468 EFI_STATUS 469 AtapiPacketCommandIn ( 470 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 471 IN UINTN DevicePosition, 472 IN ATAPI_PACKET_COMMAND *Packet, 473 IN UINT16 *Buffer, 474 IN UINT32 ByteCount, 475 IN UINTN TimeoutInMilliSeconds 476 ); 477 478 /** 479 Sends out ATAPI Inquiry Packet Command to the specified device. 480 This command will return INQUIRY data of the device. 481 482 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 483 @param[in] DevicePosition An integer to signify device position. 484 @param[out] MediaInfo The media information of the specified block media. 485 486 @retval EFI_SUCCESS Command executed successfully. 487 @retval EFI_DEVICE_ERROR Device cannot be executed command successfully. 488 @retval EFI_UNSUPPORTED Unsupported device type. 489 490 **/ 491 EFI_STATUS 492 Inquiry ( 493 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 494 IN UINTN DevicePosition, 495 OUT EFI_PEI_BLOCK_IO_MEDIA *MediaInfo 496 ); 497 498 /** 499 Used before read/write blocks from/to ATAPI device media. 500 Since ATAPI device media is removable, it is necessary to detect 501 whether media is present and get current present media's information. 502 503 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 504 @param[in] DevicePosition An integer to signify device position. 505 @param[in, out] MediaInfo The media information of the specified block media. 506 507 @retval EFI_SUCCESS Command executed successfully. 508 @retval EFI_DEVICE_ERROR Some device errors happen. 509 @retval EFI_OUT_OF_RESOURCES Can not allocate required resources. 510 511 **/ 512 EFI_STATUS 513 DetectMedia ( 514 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 515 IN UINTN DevicePosition, 516 IN OUT EFI_PEI_BLOCK_IO_MEDIA *MediaInfo 517 ); 518 519 /** 520 Reset specified Atapi device. 521 522 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 523 @param[in] DevicePosition An integer to signify device position. 524 @param[in] Extensive If TRUE, use ATA soft reset, otherwise use Atapi soft reset. 525 526 @retval EFI_SUCCESS Command executed successfully. 527 @retval EFI_DEVICE_ERROR Some device errors happen. 528 529 **/ 530 EFI_STATUS 531 ResetDevice ( 532 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 533 IN UINTN DevicePosition, 534 IN BOOLEAN Extensive 535 ); 536 537 /** 538 Sends out ATAPI Request Sense Packet Command to the specified device. 539 540 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 541 @param[in] DevicePosition An integer to signify device position. 542 @param[in] SenseBuffers Pointer to sense buffer. 543 @param[in, out] SenseCounts Length of sense buffer. 544 545 @retval EFI_SUCCESS Command executed successfully. 546 @retval EFI_DEVICE_ERROR Some device errors happen. 547 548 **/ 549 EFI_STATUS 550 RequestSense ( 551 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 552 IN UINTN DevicePosition, 553 IN ATAPI_REQUEST_SENSE_DATA *SenseBuffers, 554 IN OUT UINT8 *SenseCounts 555 ); 556 557 /** 558 Sends out ATAPI Read Capacity Packet Command to the specified device. 559 This command will return the information regarding the capacity of the 560 media in the device. 561 562 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 563 @param[in] DevicePosition An integer to signify device position. 564 @param[in, out] MediaInfo The media information of the specified block media. 565 566 @retval EFI_SUCCESS Command executed successfully. 567 @retval EFI_DEVICE_ERROR Some device errors happen. 568 569 **/ 570 EFI_STATUS 571 ReadCapacity ( 572 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 573 IN UINTN DevicePosition, 574 IN OUT EFI_PEI_BLOCK_IO_MEDIA *MediaInfo 575 ); 576 577 /** 578 Perform read from disk in block unit. 579 580 @param[in] AtapiBlkIoDev A pointer to atapi block IO device. 581 @param[in] DevicePosition An integer to signify device position. 582 @param[in] Buffer Buffer to contain read data. 583 @param[in] StartLba Starting LBA address. 584 @param[in] NumberOfBlocks Number of blocks to read. 585 @param[in] BlockSize Size of each block. 586 587 @retval EFI_SUCCESS Command executed successfully. 588 @retval EFI_DEVICE_ERROR Some device errors happen. 589 590 **/ 591 EFI_STATUS 592 ReadSectors ( 593 IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, 594 IN UINTN DevicePosition, 595 IN VOID *Buffer, 596 IN EFI_PEI_LBA StartLba, 597 IN UINTN NumberOfBlocks, 598 IN UINTN BlockSize 599 ); 600 601 /** 602 Check if there is media according to sense data. 603 604 @param[in] SenseData Pointer to sense data. 605 @param[in] SenseCounts Count of sense data. 606 607 @retval TRUE No media 608 @retval FALSE Media exists 609 610 **/ 611 BOOLEAN 612 IsNoMedia ( 613 IN ATAPI_REQUEST_SENSE_DATA *SenseData, 614 IN UINTN SenseCounts 615 ); 616 617 /** 618 Check if device state is unclear according to sense data. 619 620 @param[in] SenseData Pointer to sense data. 621 @param[in] SenseCounts Count of sense data. 622 623 @retval TRUE Device state is unclear 624 @retval FALSE Device state is clear 625 626 **/ 627 BOOLEAN 628 IsDeviceStateUnclear ( 629 IN ATAPI_REQUEST_SENSE_DATA *SenseData, 630 IN UINTN SenseCounts 631 ); 632 633 /** 634 Check if there is media error according to sense data. 635 636 @param[in] SenseData Pointer to sense data. 637 @param[in] SenseCounts Count of sense data. 638 639 @retval TRUE Media error 640 @retval FALSE No media error 641 642 **/ 643 BOOLEAN 644 IsMediaError ( 645 IN ATAPI_REQUEST_SENSE_DATA *SenseData, 646 IN UINTN SenseCounts 647 ); 648 649 /** 650 Check if drive is ready according to sense data. 651 652 @param[in] SenseData Pointer to sense data. 653 @param[in] SenseCounts Count of sense data. 654 @param[out] NeedRetry Indicate if retry is needed. 655 656 @retval TRUE Drive ready 657 @retval FALSE Drive not ready 658 659 **/ 660 BOOLEAN 661 IsDriveReady ( 662 IN ATAPI_REQUEST_SENSE_DATA *SenseData, 663 IN UINTN SenseCounts, 664 OUT BOOLEAN *NeedRetry 665 ); 666 667 #endif 668