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Annotation of drvEIDE/EIDE.drvproj/EIDE.lksproj/AtapiCntInternal.h, revision 1.1.1.1

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 1.0 (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:  * Copyright 1997-1998 by Apple Computer, Inc., All rights reserved.
                     26:  * Copyright 1994-1997 NeXT Software, Inc., All rights reserved.
                     27:  *
                     28:  * AtapiCntInternal.h - Definition of ATAPI controller class.
                     29:  *
                     30:  *
                     31:  * HISTORY 
                     32:  * 21-Mar-1995         Rakesh Dubey at NeXT 
                     33:  *     Created. 
                     34:  */
                     35:  
                     36: #import "AtapiCnt.h"
                     37: 
                     38: /*
                     39:  * Condition variable states for ioQueueLock.
                     40:  */
                     41: #define NO_WORK_AVAILABLE      0
                     42: #define WORK_AVAILABLE         1
                     43: 
                     44: @interface AtapiController(Internal)
                     45: 
                     46: /*
                     47:  * One-time only initialization.
                     48:  */
                     49: - initResources:controller;
                     50: 
                     51: /*
                     52:  * Free up local resources. 
                     53:  */
                     54: - free;
                     55: 
                     56: 
                     57: /*
                     58:  * Alloc/free command buffers.
                     59:  */
                     60: - (atapiBuf_t *)allocAtapiBuf;
                     61: - (void)freeAtapiBuf:(atapiBuf_t *)atapiBuf;
                     62: 
                     63: 
                     64: /*
                     65:  * -- Enqueue an atapiBuf_t on ioQueue<Disk,Nodisk>
                     66:  * -- wake up the I/O thread
                     67:  * -- wait for I/O complete (if atapiBuf->pending == NULL)
                     68:  */
                     69: - (IOReturn)enqueueAtapiBuf    : (atapiBuf_t *)atapiBuf;
                     70: 
                     71: /*
                     72:  * Either wake up the thread which is waiting on the atapiCmdBuf, or send an 
                     73:  * ioComplete back to client. atapiCmdBuf->status must be valid.
                     74:  */
                     75: - (void)atapiIoComplete                : (atapiBuf_t *)atapiBuf;
                     76: 
                     77: /*
                     78:  * Main command dispatch method.
                     79:  */
                     80: - (void)atapiCmdDispatch               : (atapiBuf_t *)atapiBuf;
                     81: 
                     82: /*
                     83:  * Unlock ioQLock, updating condition variable as appropriate.
                     84:  */
                     85: - (void)unlockIoQLock;
                     86: 
                     87: @end   /* AtapiController(Internal) */
                     88: 

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