iokit/IOKit/scsi/scsi-parallel/SCSIParallelController.h

   1 /*
   2  * Copyright (c) 1998-2000 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  *      SCSIParallelController.h
  24  *
  25  */
  26
  27 #ifndef _SCSIPARALLELCONTROLLER_H
  28 #define _SCSIPARALLELCONTROLLER_H
  29
  30 class IOSyncer;
  31
  32 typedef struct SCSIControllerInfo
  33 {
  34     UInt32      initiatorId;
  35
  36     UInt32      maxTargetsSupported;
  37     UInt32      maxLunsSupported;
  38
  39     UInt32      minTransferPeriodpS;
  40     UInt32      maxTransferOffset;
  41     UInt32      maxTransferWidth;
  42
  43     UInt32      maxCommandsPerController;
  44     UInt32      maxCommandsPerTarget;
  45     UInt32      maxCommandsPerLun;
  46
  47     UInt32      tagAllocationMethod;
  48     UInt32      maxTags;
  49
  50     UInt32      targetPrivateDataSize;
  51     UInt32      lunPrivateDataSize;
  52     UInt32      commandPrivateDataSize;
  53
  54     bool        disableCancelCommands;
  55
  56     UInt32      reserved[64];
  57
  58 } SCSIControllerInfo;
  59
  60 enum SCSITagAllocation
  61 {
  62     kTagAllocationNone                  = 0,
  63     kTagAllocationPerLun,
  64     kTagAllocationPerTarget,
  65     kTagAllocationPerController,
  66 };
  67
  68 /*
  69  * Private for IOSCSIClass
  70  */
  71 enum WorkLoopReqType
  72 {
  73     kWorkLoopInitTarget         = 1,
  74     kWorkLoopReleaseTarget,
  75     kWorkLoopInitDevice,
  76     kWorkLoopReleaseDevice,
  77 };
  78
  79 enum DispatchAction
  80 {
  81     kDispatchNextCommand        = 1,
  82     kDispatchNextLun,
  83     kDispatchNextTarget,
  84     kDispatchStop,
  85 };
  86
  87 typedef struct WorkLoopRequest
  88 {
  89     WorkLoopReqType     type;
  90     IOSyncer *          sync;
  91     bool                rc;
  92 } WorkLoopRequest;
  93
  94 #endif
  95