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Annotation of ntddk/src/scsi/qic117/pause.c, revision 1.1.1.1

1.1       root        1: /*++
                      2: 
                      3: Copyright (c) 1993 - Colorado Memory Systems, Inc.
                      4: All Rights Reserved
                      5: 
                      6: Module Name:
                      7: 
                      8:     pause.c
                      9: 
                     10: Abstract:
                     11: 
                     12:     stops the tape and rewinds 3 blocks.
                     13: 
                     14: Revision History:
                     15: 
                     16: 
                     17: 
                     18: 
                     19: --*/
                     20: 
                     21: //
                     22: // include files
                     23: //
                     24: 
                     25: #include <ntddk.h>                        // various NT definitions
                     26: #include <ntdddisk.h>                    // disk device driver I/O control codes
                     27: #include <ntiologc.h>
                     28: #include "common.h"
                     29: #include "drvtask.h"                     // this driver's data declarations
                     30: #include "mt1defs.h"                     // this driver's data declarations
                     31: #include "mt1strc.h"                     // this driver's data declarations
                     32: #include "q117data.h"                    // this driver's data declarations
                     33: 
                     34: 
                     35: STATUS
                     36: Q117iPauseTape(
                     37:     IN PTAPE_EXTENSION TapeExtension
                     38:     )
                     39: 
                     40: /*++
                     41: 
                     42: Routine Description:
                     43: 
                     44:     Stop the tape by issuing a Pause command to the tape drive. The Pause
                     45:     command will both stop the tape and rewind it back a few blocks.
                     46: 
                     47: Arguments:
                     48: 
                     49:     TapeExtension -
                     50: 
                     51: Return Value:
                     52: 
                     53: 
                     54: 
                     55: --*/
                     56: 
                     57: {
                     58:     STATUS retval = NoErr;
                     59: 
                     60:     if ((retval = Q117iSendByte(TapeExtension, Pause)) == NoErr) {
                     61: 
                     62:         if ((retval = Q117iWaitCommandComplete(TapeExtension, mt_wt016s)) == NoErr) {
                     63:             
                     64:             TapeExtension->TapePosition.LogFwd = FALSE;
                     65: 
                     66:         }
                     67:     }
                     68: 
                     69:     if (retval == TimeOut) {
                     70:         
                     71:         if((retval = Q117iSendByte(TapeExtension, Pause)) == NoErr) {
                     72: 
                     73:             if ((retval = Q117iWaitCommandComplete(TapeExtension, mt_wt016s)) == NoErr) {
                     74:                 
                     75:                 TapeExtension->TapePosition.LogFwd = FALSE;
                     76: 
                     77:             }
                     78:         }
                     79: 
                     80:     }
                     81: 
                     82:     Q117iDLockUnlockDMA(TapeExtension, FALSE);
                     83: 
                     84: 
                     85:     return(retval);
                     86: }

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