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Annotation of kernel/bsd/dev/ppc/drvSymbios8xx/Sym8xxSRB.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Sym8xxSRB.h created by russb2 on Sat 30-May-1998 */
        !            26: 
        !            27: /*
        !            28:  * The SRB is the main per-request data structure used by the driver.
        !            29:  *
        !            30:  * It contains an embedded Nexus structure which is used as a per-request
        !            31:  * communication area between the script and the driver.
        !            32:  */ 
        !            33: 
        !            34: typedef struct SRB             SRB;
        !            35: 
        !            36: struct SRB
        !            37: {
        !            38:     queue_chain_t              srbQ;
        !            39: 
        !            40:     SRB                                *srbPhys;
        !            41: 
        !            42:     NXConditionLock            *srbCmdLock;
        !            43: 
        !            44:     u_int32_t                  srbTimeout;
        !            45: 
        !            46:     u_int32_t                  srbSeqNum;
        !            47: 
        !            48:     u_int8_t                   srbCmd;
        !            49:     u_int8_t                   srbState;
        !            50:     u_int8_t                   srbRequestFlags;
        !            51: 
        !            52:     u_int8_t                   srbSCSIResult;
        !            53:     u_int8_t                   srbSCSIStatus;
        !            54: 
        !            55:     u_int8_t                   srbMsgResid;
        !            56:     u_int8_t                   srbMsgLength;
        !            57: 
        !            58:     u_int8_t                   target;
        !            59:     u_int8_t                   lun;
        !            60:     u_int8_t                   tag;
        !            61: 
        !            62:     u_int32_t                  directionMask;
        !            63: 
        !            64:     vm_task_t                  xferClient;
        !            65:     vm_offset_t                        xferBuffer;
        !            66:     u_int32_t                  xferOffset;
        !            67:     u_int32_t                  xferOffsetPrev;
        !            68:     u_int32_t                  xferCount;
        !            69:     u_int32_t                  xferDone;
        !            70: 
        !            71:     vm_offset_t                        senseData;
        !            72:     u_int32_t                  senseDataLength;
        !            73: 
        !            74:     Nexus                      nexus;  
        !            75: 
        !            76: };
        !            77: 
        !            78: enum srbCmdLock
        !            79: {
        !            80:     ksrbCmdPending = 1,
        !            81:     ksrbCmdComplete 
        !            82: };
        !            83: 
        !            84: enum srbState
        !            85: {
        !            86:     ksrbStateCDBDone = 1,
        !            87:     ksrbStateReqSenseDone,
        !            88: };
        !            89: 
        !            90: enum srbQCmd
        !            91: {
        !            92:     ksrbCmdExecuteReq          = 0x01,
        !            93:     ksrbCmdResetSCSIBus         = 0x02,
        !            94:     ksrbCmdAbortReq            = 0x03,
        !            95:     ksrbCmdBusDevReset         = 0x04,
        !            96:     ksrbCmdProcessTimeout       = 0x05,
        !            97: };
        !            98: 
        !            99: enum srbRequestFlags
        !           100: {
        !           101:     ksrbRFCmdQueueAllowed      = 0x01,
        !           102:     ksrbRFDisconnectAllowed    = 0x02,
        !           103:     ksrbRFXferSyncAllowed      = 0x04,
        !           104: 
        !           105:     ksrbRFNegotiateWide                = 0x40,
        !           106:     ksrbRFNegotiateSync         = 0x80,
        !           107: };
        !           108: 
        !           109: 
        !           110: typedef struct SRBPool
        !           111: {
        !           112:     queue_chain_t              nextPage;
        !           113:     u_int32_t                  pagePhysAddr;
        !           114:     queue_head_t               freeSRBList;
        !           115:     u_int32_t                  srbInUseCount;
        !           116:     u_int32_t                  reserved[2];
        !           117: } SRBPool;
        !           118: 
        !           119: enum
        !           120: {
        !           121:     kSRBGrowPoolRunning                = 1,
        !           122:     kSRBGrowPoolIdle,
        !           123: };
        !           124: 
        !           125: enum
        !           126: {
        !           127:     kSRBPoolMaxFreePages       = 2,
        !           128: };
        !           129: 
        !           130: typedef struct Target
        !           131: {
        !           132:     u_int32_t                  flags;
        !           133:     NXLock                     *targetTagSem;
        !           134: } Target;
        !           135: 
        !           136: enum 
        !           137: {
        !           138:      kTFCmdQueueSupported      = 0x00000001,
        !           139:      kTFCmdQueueAllowed                = 0x00000002,
        !           140: 
        !           141:      kTFXferSyncSupported      = 0x00000004,
        !           142:      kTFXferSyncAllowed                = 0x00000008,
        !           143:      kTFXferSync               = 0x00000010,
        !           144:   
        !           145:      kTFXferWide16Supported    = 0x00000020,
        !           146:      kTFXferWide16Allowed      = 0x00000040,
        !           147:      kTFXferWide16             = 0x00000080,
        !           148: };

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