iokit/Drivers/scsi/drvSymbios8xx/Sym8xxSRB.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 /* Sym8xxSRB.h created by russb2 on Sat 30-May-1998 */
  24
  25 /*
  26  * The SRB is the main per-request data structure used by the driver.
  27  *
  28  * It contains an embedded Nexus structure which is used as a per-request
  29  * communication area between the script and the driver.
  30  */
  31
  32 typedef struct SRB              SRB;
  33
  34 struct  SRB
  35 {
  36     SRB                         *srbPhys;
  37
  38     IOSCSIParallelCommand       *scsiCommand;
  39
  40     UInt32                      srbCDBFlags;
  41
  42     IOReturn                    srbReturnCode;
  43     SCSIAdapterStatus           srbAdapterStatus;
  44     UInt8                       srbSCSIStatus;
  45
  46     UInt8                       srbMsgResid;
  47     UInt8                       srbMsgLength;
  48
  49     UInt8                       target;
  50     UInt8                       lun;
  51     UInt8                       tag;
  52
  53     UInt8                       negotiateSDTRComplete;
  54     UInt8                       negotiateWDTRComplete;
  55
  56     UInt32                      directionMask;
  57
  58     IOMemoryDescriptor          *xferDesc;
  59     UInt32                      xferOffset;
  60     UInt32                      xferOffsetPrev;
  61     UInt32                      xferCount;
  62     UInt32                      xferDone;
  63
  64     Nexus                       nexus;
  65
  66 };
  67