EdkModulePkg/Bus/Pci/AtapiPassThru/Dxe/AtapiPassThru.h

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. 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 Module Name:
  13
  14     AtapiPassThru.h
  15
  16 Abstract:
  17
  18
  19 Revision History
  20 --*/
  21
  22 #ifndef _APT_H
  23 #define _APT_H
  24
  25
  26 #include <IndustryStandard/Pci22.h>
  27
  28 //
  29 // bit definition
  30 //
  31 #define bit(a)        1 << (a)
  32
  33 #define MAX_TARGET_ID 4
  34 //
  35 // IDE Registers
  36 //
  37 typedef union {
  38   UINT16  Command;        /* when write */
  39   UINT16  Status;         /* when read */
  40 } IDE_CMD_OR_STATUS;
  41
  42 typedef union {
  43   UINT16  Error;          /* when read */
  44   UINT16  Feature;        /* when write */
  45 } IDE_ERROR_OR_FEATURE;
  46
  47 typedef union {
  48   UINT16  AltStatus;      /* when read */
  49   UINT16  DeviceControl;  /* when write */
  50 } IDE_AltStatus_OR_DeviceControl;
  51
  52 //
  53 // IDE registers set
  54 //
  55 typedef struct {
  56   UINT16                          Data;
  57   IDE_ERROR_OR_FEATURE            Reg1;
  58   UINT16                          SectorCount;
  59   UINT16                          SectorNumber;
  60   UINT16                          CylinderLsb;
  61   UINT16                          CylinderMsb;
  62   UINT16                          Head;
  63   IDE_CMD_OR_STATUS               Reg;
  64
  65   IDE_AltStatus_OR_DeviceControl  Alt;
  66   UINT16                          DriveAddress;
  67
  68   UINT16                          MasterSlave;
  69 } IDE_BASE_REGISTERS;
  70
  71 #define ATAPI_SCSI_PASS_THRU_DEV_SIGNATURE  EFI_SIGNATURE_32 ('a', 's', 'p', 't')
  72
  73 typedef struct {
  74   UINTN                       Signature;
  75
  76   EFI_HANDLE                  Handle;
  77   EFI_SCSI_PASS_THRU_PROTOCOL ScsiPassThru;
  78   EFI_SCSI_PASS_THRU_MODE     ScsiPassThruMode;
  79   EFI_PCI_IO_PROTOCOL         *PciIo;
  80
  81   //
  82   // Local Data goes here
  83   //
  84   IDE_BASE_REGISTERS          *IoPort;
  85
  86   CHAR16                      ControllerName[100];
  87   CHAR16                      ChannelName[100];
  88
  89   UINT32                      LatestTargetId;
  90   UINT64                      LatestLun;
  91
  92 } ATAPI_SCSI_PASS_THRU_DEV;
  93
  94 #define ATAPI_SCSI_PASS_THRU_DEV_FROM_THIS(a) \
  95   CR (a, \
  96       ATAPI_SCSI_PASS_THRU_DEV, \
  97       ScsiPassThru, \
  98       ATAPI_SCSI_PASS_THRU_DEV_SIGNATURE \
  99       )
 100
 101 //
 102 // Global Variables
 103 //
 104 extern EFI_DRIVER_BINDING_PROTOCOL  gAtapiScsiPassThruDriverBinding;
 105 extern EFI_COMPONENT_NAME_PROTOCOL  gAtapiScsiPassThruComponentName;
 106
 107 //
 108 // ATAPI Command op code
 109 //
 110 #define OP_INQUIRY                      0x12
 111 #define OP_LOAD_UNLOAD_CD               0xa6
 112 #define OP_MECHANISM_STATUS             0xbd
 113 #define OP_MODE_SELECT_10               0x55
 114 #define OP_MODE_SENSE_10                0x5a
 115 #define OP_PAUSE_RESUME                 0x4b
 116 #define OP_PLAY_AUDIO_10                0x45
 117 #define OP_PLAY_AUDIO_MSF               0x47
 118 #define OP_PLAY_CD                      0xbc
 119 #define OP_PLAY_CD_MSF                  0xb4
 120 #define OP_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e
 121 #define OP_READ_10                      0x28
 122 #define OP_READ_12                      0xa8
 123 #define OP_READ_CAPACITY                0x25
 124 #define OP_READ_CD                      0xbe
 125 #define OP_READ_CD_MSF                  0xb9
 126 #define OP_READ_HEADER                  0x44
 127 #define OP_READ_SUB_CHANNEL             0x42
 128 #define OP_READ_TOC                     0x43
 129 #define OP_REQUEST_SENSE                0x03
 130 #define OP_SCAN                         0xba
 131 #define OP_SEEK_10                      0x2b
 132 #define OP_SET_CD_SPEED                 0xbb
 133 #define OP_STOPPLAY_SCAN                0x4e
 134 #define OP_START_STOP_UNIT              0x1b
 135 #define OP_TEST_UNIT_READY              0x00
 136
 137 #define OP_FORMAT_UNIT                  0x04
 138 #define OP_READ_FORMAT_CAPACITIES       0x23
 139 #define OP_VERIFY                       0x2f
 140 #define OP_WRITE_10                     0x2a
 141 #define OP_WRITE_12                     0xaa
 142 #define OP_WRITE_AND_VERIFY             0x2e
 143
 144 //
 145 // ATA Command
 146 //
 147 #define ATAPI_SOFT_RESET_CMD  0x08
 148
 149 typedef enum {
 150   DataIn  = 0,
 151   DataOut = 1,
 152   NoData  = 2,
 153   End     = 0xff
 154 } DATA_DIRECTION;
 155
 156 typedef struct {
 157   UINT8           OpCode;
 158   DATA_DIRECTION  Direction;
 159 } SCSI_COMMAND_SET;
 160
 161 #define MAX_CHANNEL         2
 162
 163 #define ValidCdbLength(Len) ((Len) == 6 || (Len) == 10 || (Len) == 12) ? 1 : 0
 164
 165 //
 166 // IDE registers bit definitions
 167 //
 168 // ATA Err Reg bitmap
 169 //
 170 #define BBK_ERR   bit (7) /* Bad block detected */
 171 #define UNC_ERR   bit (6) /* Uncorrectable Data */
 172 #define MC_ERR    bit (5) /* Media Change */
 173 #define IDNF_ERR  bit (4) /* ID Not Found */
 174 #define MCR_ERR   bit (3) /* Media Change Requested */
 175 #define ABRT_ERR  bit (2) /* Aborted Command */
 176 #define TK0NF_ERR bit (1) /* Track 0 Not Found */
 177 #define AMNF_ERR  bit (0) /* Address Mark Not Found */
 178
 179 //
 180 // ATAPI Err Reg bitmap
 181 //
 182 #define SENSE_KEY_ERR (bit (7) | bit (6) | bit (5) | bit (4))
 183 #define EOM_ERR bit (1) /* End of Media Detected */
 184 #define ILI_ERR bit (0) /* Illegal Length Indication */
 185
 186 //
 187 // Device/Head Reg
 188 //
 189 #define LBA_MODE  bit (6)
 190 #define DEV       bit (4)
 191 #define HS3       bit (3)
 192 #define HS2       bit (2)
 193 #define HS1       bit (1)
 194 #define HS0       bit (0)
 195 #define CHS_MODE  (0)
 196 #define DRV0      (0)
 197 #define DRV1      (1)
 198 #define MST_DRV   DRV0
 199 #define SLV_DRV   DRV1
 200
 201 //
 202 // Status Reg
 203 //
 204 #define BSY   bit (7) /* Controller Busy */
 205 #define DRDY  bit (6) /* Drive Ready */
 206 #define DWF   bit (5) /* Drive Write Fault */
 207 #define DSC   bit (4) /* Disk Seek Complete */
 208 #define DRQ   bit (3) /* Data Request */
 209 #define CORR  bit (2) /* Corrected Data */
 210 #define IDX   bit (1) /* Index */
 211 #define ERR   bit (0) /* Error */
 212 #define CHECK bit (0) /* Check bit for ATAPI Status Reg */
 213
 214 //
 215 // Device Control Reg
 216 //
 217 #define SRST  bit (2) /* Software Reset */
 218 #define IEN_L bit (1) /* Interrupt Enable #*/
 219
 220 //
 221 // ATAPI Feature Register
 222 //
 223 #define OVERLAP bit (1)
 224 #define DMA     bit (0)
 225
 226 //
 227 // ATAPI Interrupt Reason Reson Reg (ATA Sector Count Register)
 228 //
 229 #define RELEASE     bit (2)
 230 #define IO          bit (1)
 231 #define CoD         bit (0)
 232
 233 #define PACKET_CMD  0xA0
 234
 235 #define DEFAULT_CMD (0xa0)
 236 //
 237 // default content of device control register, disable INT
 238 //
 239 #define DEFAULT_CTL           (0x0a)
 240 #define MAX_ATAPI_BYTE_COUNT  (0xfffe)
 241
 242 //
 243 // function prototype
 244 //
 245 EFI_STATUS
 246 EFIAPI
 247 AtapiScsiPassThruDriverEntryPoint (
 248   IN EFI_HANDLE         ImageHandle,
 249   IN EFI_SYSTEM_TABLE   *SystemTable
 250   )
 251  /*++
 252
 253 Routine Description:
 254
 255   TODO: Add function description
 256
 257 Arguments:
 258
 259   ImageHandle - TODO: add argument description
 260   SystemTable - TODO: add argument description
 261
 262 Returns:
 263
 264   TODO: add return values
 265
 266 --*/
 267 ;
 268
 269 EFI_STATUS
 270 RegisterAtapiScsiPassThru (
 271   IN EFI_DRIVER_BINDING_PROTOCOL  *This,
 272   IN  EFI_HANDLE                  Controller,
 273   IN  EFI_PCI_IO_PROTOCOL         *PciIo
 274   )
 275 /*++
 276
 277 Routine Description:
 278
 279   TODO: Add function description
 280
 281 Arguments:
 282
 283   This        - TODO: add argument description
 284   Controller  - TODO: add argument description
 285   PciIo       - TODO: add argument description
 286
 287 Returns:
 288
 289   TODO: add return values
 290
 291 --*/
 292 ;
 293
 294 EFI_STATUS
 295 EFIAPI
 296 AtapiScsiPassThruFunction (
 297   IN EFI_SCSI_PASS_THRU_PROTOCOL                        *This,
 298   IN UINT32                                             Target,
 299   IN UINT64                                             Lun,
 300   IN OUT EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET         *Packet,
 301   IN EFI_EVENT                                          Event OPTIONAL
 302   )
 303 /*++
 304
 305 Routine Description:
 306
 307   TODO: Add function description
 308
 309 Arguments:
 310
 311   This    - TODO: add argument description
 312   Target  - TODO: add argument description
 313   Lun     - TODO: add argument description
 314   Packet  - TODO: add argument description
 315   Event   - TODO: add argument description
 316
 317 Returns:
 318
 319   TODO: add return values
 320
 321 --*/
 322 ;
 323
 324 EFI_STATUS
 325 EFIAPI
 326 AtapiScsiPassThruGetNextDevice (
 327   IN  EFI_SCSI_PASS_THRU_PROTOCOL    *This,
 328   IN OUT UINT32                      *Target,
 329   IN OUT UINT64                      *Lun
 330   )
 331 /*++
 332
 333 Routine Description:
 334
 335   TODO: Add function description
 336
 337 Arguments:
 338
 339   This    - TODO: add argument description
 340   Target  - TODO: add argument description
 341   Lun     - TODO: add argument description
 342
 343 Returns:
 344
 345   TODO: add return values
 346
 347 --*/
 348 ;
 349
 350 EFI_STATUS
 351 EFIAPI
 352 AtapiScsiPassThruBuildDevicePath (
 353   IN     EFI_SCSI_PASS_THRU_PROTOCOL    *This,
 354   IN     UINT32                         Target,
 355   IN     UINT64                         Lun,
 356   IN OUT EFI_DEVICE_PATH_PROTOCOL       **DevicePath
 357   )
 358 /*++
 359
 360 Routine Description:
 361
 362   TODO: Add function description
 363
 364 Arguments:
 365
 366   This        - TODO: add argument description
 367   Target      - TODO: add argument description
 368   Lun         - TODO: add argument description
 369   DevicePath  - TODO: add argument description
 370
 371 Returns:
 372
 373   TODO: add return values
 374
 375 --*/
 376 ;
 377
 378 EFI_STATUS
 379 EFIAPI
 380 AtapiScsiPassThruGetTargetLun (
 381   IN  EFI_SCSI_PASS_THRU_PROTOCOL    *This,
 382   IN  EFI_DEVICE_PATH_PROTOCOL       *DevicePath,
 383   OUT UINT32                         *Target,
 384   OUT UINT64                         *Lun
 385   )
 386 /*++
 387
 388 Routine Description:
 389
 390   TODO: Add function description
 391
 392 Arguments:
 393
 394   This        - TODO: add argument description
 395   DevicePath  - TODO: add argument description
 396   Target      - TODO: add argument description
 397   Lun         - TODO: add argument description
 398
 399 Returns:
 400
 401   TODO: add return values
 402
 403 --*/
 404 ;
 405
 406 EFI_STATUS
 407 EFIAPI
 408 AtapiScsiPassThruResetChannel (
 409   IN  EFI_SCSI_PASS_THRU_PROTOCOL   *This
 410   )
 411 /*++
 412
 413 Routine Description:
 414
 415   TODO: Add function description
 416
 417 Arguments:
 418
 419   This  - TODO: add argument description
 420
 421 Returns:
 422
 423   TODO: add return values
 424
 425 --*/
 426 ;
 427
 428 EFI_STATUS
 429 EFIAPI
 430 AtapiScsiPassThruResetTarget (
 431   IN EFI_SCSI_PASS_THRU_PROTOCOL    *This,
 432   IN UINT32                         Target,
 433   IN UINT64                         Lun
 434   )
 435 /*++
 436
 437 Routine Description:
 438
 439   TODO: Add function description
 440
 441 Arguments:
 442
 443   This    - TODO: add argument description
 444   Target  - TODO: add argument description
 445   Lun     - TODO: add argument description
 446
 447 Returns:
 448
 449   TODO: add return values
 450
 451 --*/
 452 ;
 453
 454 EFI_STATUS
 455 CheckSCSIRequestPacket (
 456   EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET      *Packet
 457   )
 458 /*++
 459
 460 Routine Description:
 461
 462   TODO: Add function description
 463
 464 Arguments:
 465
 466   Packet  - TODO: add argument description
 467
 468 Returns:
 469
 470   TODO: add return values
 471
 472 --*/
 473 ;
 474
 475 EFI_STATUS
 476 SubmitBlockingIoCommand (
 477   ATAPI_SCSI_PASS_THRU_DEV                  *AtapiScsiPrivate,
 478   UINT32                                    Target,
 479   EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET    *Packet
 480   )
 481 /*++
 482
 483 Routine Description:
 484
 485   TODO: Add function description
 486
 487 Arguments:
 488
 489   AtapiScsiPrivate  - TODO: add argument description
 490   Target            - TODO: add argument description
 491   Packet            - TODO: add argument description
 492
 493 Returns:
 494
 495   TODO: add return values
 496
 497 --*/
 498 ;
 499
 500 BOOLEAN
 501 IsCommandValid (
 502   EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET   *Packet
 503   )
 504  /*++
 505
 506 Routine Description:
 507
 508   TODO: Add function description
 509
 510 Arguments:
 511
 512   Packet  - TODO: add argument description
 513
 514 Returns:
 515
 516   TODO: add return values
 517
 518 --*/
 519 ;
 520
 521 EFI_STATUS
 522 RequestSenseCommand (
 523   ATAPI_SCSI_PASS_THRU_DEV    *AtapiScsiPrivate,
 524   UINT32                      Target,
 525   UINT64                      Timeout,
 526   VOID                        *SenseData,
 527   UINT8                       *SenseDataLength
 528   )
 529 /*++
 530
 531 Routine Description:
 532
 533   TODO: Add function description
 534
 535 Arguments:
 536
 537   AtapiScsiPrivate  - TODO: add argument description
 538   Target            - TODO: add argument description
 539   Timeout           - TODO: add argument description
 540   SenseData         - TODO: add argument description
 541   SenseDataLength   - TODO: add argument description
 542
 543 Returns:
 544
 545   TODO: add return values
 546
 547 --*/
 548 ;
 549
 550 EFI_STATUS
 551 AtapiPacketCommand (
 552   ATAPI_SCSI_PASS_THRU_DEV                  *AtapiScsiPrivate,
 553   UINT32                                    Target,
 554   UINT8                                     *PacketCommand,
 555   VOID                                      *Buffer,
 556   UINT32                                    *ByteCount,
 557   DATA_DIRECTION                            Direction,
 558   UINT64                                    TimeOutInMicroSeconds
 559   )
 560 /*++
 561
 562 Routine Description:
 563
 564   TODO: Add function description
 565
 566 Arguments:
 567
 568   AtapiScsiPrivate      - TODO: add argument description
 569   Target                - TODO: add argument description
 570   PacketCommand         - TODO: add argument description
 571   Buffer                - TODO: add argument description
 572   ByteCount             - TODO: add argument description
 573   Direction             - TODO: add argument description
 574   TimeOutInMicroSeconds - TODO: add argument description
 575
 576 Returns:
 577
 578   TODO: add return values
 579
 580 --*/
 581 ;
 582
 583
 584 UINT8
 585 ReadPortB (
 586   IN  EFI_PCI_IO_PROTOCOL   *PciIo,
 587   IN  UINT16                Port
 588   )
 589 /*++
 590
 591 Routine Description:
 592
 593   TODO: Add function description
 594
 595 Arguments:
 596
 597   PciIo - TODO: add argument description
 598   Port  - TODO: add argument description
 599
 600 Returns:
 601
 602   TODO: add return values
 603
 604 --*/
 605 ;
 606
 607
 608 UINT16
 609 ReadPortW (
 610   IN  EFI_PCI_IO_PROTOCOL   *PciIo,
 611   IN  UINT16                Port
 612   )
 613 /*++
 614
 615 Routine Description:
 616
 617   TODO: Add function description
 618
 619 Arguments:
 620
 621   PciIo - TODO: add argument description
 622   Port  - TODO: add argument description
 623
 624 Returns:
 625
 626   TODO: add return values
 627
 628 --*/
 629 ;
 630
 631
 632 VOID
 633 WritePortB (
 634   IN  EFI_PCI_IO_PROTOCOL   *PciIo,
 635   IN  UINT16                Port,
 636   IN  UINT8                 Data
 637   )
 638 /*++
 639
 640 Routine Description:
 641
 642   TODO: Add function description
 643
 644 Arguments:
 645
 646   PciIo - TODO: add argument description
 647   Port  - TODO: add argument description
 648   Data  - TODO: add argument description
 649
 650 Returns:
 651
 652   TODO: add return values
 653
 654 --*/
 655 ;
 656
 657
 658 VOID
 659 WritePortW (
 660   IN  EFI_PCI_IO_PROTOCOL   *PciIo,
 661   IN  UINT16                Port,
 662   IN  UINT16                Data
 663   )
 664 /*++
 665
 666 Routine Description:
 667
 668   TODO: Add function description
 669
 670 Arguments:
 671
 672   PciIo - TODO: add argument description
 673   Port  - TODO: add argument description
 674   Data  - TODO: add argument description
 675
 676 Returns:
 677
 678   TODO: add return values
 679
 680 --*/
 681 ;
 682
 683 EFI_STATUS
 684 StatusDRQClear (
 685   ATAPI_SCSI_PASS_THRU_DEV        *AtapiScsiPrivate,
 686   UINT64                          TimeOutInMicroSeconds
 687   )
 688 /*++
 689
 690 Routine Description:
 691
 692   TODO: Add function description
 693
 694 Arguments:
 695
 696   AtapiScsiPrivate      - TODO: add argument description
 697   TimeOutInMicroSeconds - TODO: add argument description
 698
 699 Returns:
 700
 701   TODO: add return values
 702
 703 --*/
 704 ;
 705
 706 EFI_STATUS
 707 AltStatusDRQClear (
 708   ATAPI_SCSI_PASS_THRU_DEV        *AtapiScsiPrivate,
 709   UINT64                          TimeOutInMicroSeconds
 710   )
 711 /*++
 712
 713 Routine Description:
 714
 715   TODO: Add function description
 716
 717 Arguments:
 718
 719   AtapiScsiPrivate      - TODO: add argument description
 720   TimeOutInMicroSeconds - TODO: add argument description
 721
 722 Returns:
 723
 724   TODO: add return values
 725
 726 --*/
 727 ;
 728
 729 EFI_STATUS
 730 StatusDRQReady (
 731   ATAPI_SCSI_PASS_THRU_DEV        *AtapiScsiPrivate,
 732   UINT64                          TimeOutInMicroSeconds
 733   )
 734 /*++
 735
 736 Routine Description:
 737
 738   TODO: Add function description
 739
 740 Arguments:
 741
 742   AtapiScsiPrivate      - TODO: add argument description
 743   TimeOutInMicroSeconds - TODO: add argument description
 744
 745 Returns:
 746
 747   TODO: add return values
 748
 749 --*/
 750 ;
 751
 752 EFI_STATUS
 753 AltStatusDRQReady (
 754   ATAPI_SCSI_PASS_THRU_DEV        *AtapiScsiPrivate,
 755   UINT64                          TimeOutInMicroSeconds
 756   )
 757 /*++
 758
 759 Routine Description:
 760
 761   TODO: Add function description
 762
 763 Arguments:
 764
 765   AtapiScsiPrivate      - TODO: add argument description
 766   TimeOutInMicroSeconds - TODO: add argument description
 767
 768 Returns:
 769
 770   TODO: add return values
 771
 772 --*/
 773 ;
 774
 775 EFI_STATUS
 776 StatusWaitForBSYClear (
 777   ATAPI_SCSI_PASS_THRU_DEV    *AtapiScsiPrivate,
 778   UINT64                      TimeoutInMicroSeconds
 779   )
 780 /*++
 781
 782 Routine Description:
 783
 784   TODO: Add function description
 785
 786 Arguments:
 787
 788   AtapiScsiPrivate      - TODO: add argument description
 789   TimeoutInMicroSeconds - TODO: add argument description
 790
 791 Returns:
 792
 793   TODO: add return values
 794
 795 --*/
 796 ;
 797
 798 EFI_STATUS
 799 AltStatusWaitForBSYClear (
 800   ATAPI_SCSI_PASS_THRU_DEV    *AtapiScsiPrivate,
 801   UINT64                      TimeoutInMicroSeconds
 802   )
 803 /*++
 804
 805 Routine Description:
 806
 807   TODO: Add function description
 808
 809 Arguments:
 810
 811   AtapiScsiPrivate      - TODO: add argument description
 812   TimeoutInMicroSeconds - TODO: add argument description
 813
 814 Returns:
 815
 816   TODO: add return values
 817
 818 --*/
 819 ;
 820
 821 EFI_STATUS
 822 StatusDRDYReady (
 823   ATAPI_SCSI_PASS_THRU_DEV    *AtapiScsiPrivate,
 824   UINT64                      TimeoutInMicroSeconds
 825   )
 826 /*++
 827
 828 Routine Description:
 829
 830   TODO: Add function description
 831
 832 Arguments:
 833
 834   AtapiScsiPrivate      - TODO: add argument description
 835   TimeoutInMicroSeconds - TODO: add argument description
 836
 837 Returns:
 838
 839   TODO: add return values
 840
 841 --*/
 842 ;
 843
 844 EFI_STATUS
 845 AltStatusDRDYReady (
 846   ATAPI_SCSI_PASS_THRU_DEV    *AtapiScsiPrivate,
 847   UINT64                      TimeoutInMicroSeconds
 848   )
 849 /*++
 850
 851 Routine Description:
 852
 853   TODO: Add function description
 854
 855 Arguments:
 856
 857   AtapiScsiPrivate      - TODO: add argument description
 858   TimeoutInMicroSeconds - TODO: add argument description
 859
 860 Returns:
 861
 862   TODO: add return values
 863
 864 --*/
 865 ;
 866
 867 EFI_STATUS
 868 AtapiPassThruPioReadWriteData (
 869   ATAPI_SCSI_PASS_THRU_DEV  *AtapiScsiPrivate,
 870   UINT16                    *Buffer,
 871   UINT32                    *ByteCount,
 872   DATA_DIRECTION            Direction,
 873   UINT64                    TimeOutInMicroSeconds
 874   )
 875 /*++
 876
 877 Routine Description:
 878
 879   TODO: Add function description
 880
 881 Arguments:
 882
 883   AtapiScsiPrivate      - TODO: add argument description
 884   Buffer                - TODO: add argument description
 885   ByteCount             - TODO: add argument description
 886   Direction             - TODO: add argument description
 887   TimeOutInMicroSeconds - TODO: add argument description
 888
 889 Returns:
 890
 891   TODO: add return values
 892
 893 --*/
 894 ;
 895
 896 EFI_STATUS
 897 AtapiPassThruCheckErrorStatus (
 898   ATAPI_SCSI_PASS_THRU_DEV        *AtapiScsiPrivate
 899   )
 900 /*++
 901
 902 Routine Description:
 903
 904   TODO: Add function description
 905
 906 Arguments:
 907
 908   AtapiScsiPrivate  - TODO: add argument description
 909
 910 Returns:
 911
 912   TODO: add return values
 913
 914 --*/
 915 ;
 916 #endif