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Annotation of ntddk/src/scsi/qic117/do_stop.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:     do_stop.c
                      9: 
                     10: Abstract:
                     11: 
                     12:     stops the tape motion (low level function).
                     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: Q117iStopTape(
                     37:     IN PTAPE_EXTENSION TapeExtension
                     38:     )
                     39: 
                     40: /*++
                     41: 
                     42: Routine Description:
                     43: 
                     44:     Stop the tape if it is moving.
                     45: 
                     46: Arguments:
                     47: 
                     48:     TapeExtension -
                     49: 
                     50: Return Value:
                     51: 
                     52: 
                     53: 
                     54: --*/
                     55: 
                     56: {
                     57: STATUS retval;
                     58: 
                     59:     //
                     60:     // This first call to GetDriveError must be done to clear any errors that can
                     61:     // occur due to ESD.  Specifically, the select line may go away and if we
                     62:     // do not reset it the Stop_Tape command will be ignored.
                     63:     //
                     64: 
                     65:     retval = Q117iGetDriveError(TapeExtension);
                     66: 
                     67:     if (retval == NoErr || retval == NotRdy) {
                     68: 
                     69:         if ((retval = Q117iSendByte(TapeExtension, Stop_Tape)) == NoErr) {
                     70: 
                     71:             if ((retval = Q117iWaitCommandComplete(TapeExtension, mt_wt005s)) == NoErr) {
                     72:                 
                     73:                 TapeExtension->TapePosition.LogFwd = FALSE;
                     74: 
                     75:             }
                     76:         }
                     77: 
                     78:     }
                     79: 
                     80:     if (retval == TimeOut) {
                     81:         
                     82:         retval = Q117iSendByte(TapeExtension, Stop_Tape);
                     83: 
                     84:         if ((retval = Q117iSendByte(TapeExtension, Stop_Tape)) == NoErr) {
                     85: 
                     86:             if ((retval = Q117iWaitCommandComplete(TapeExtension, mt_wt005s)) == NoErr) {
                     87:                 
                     88:                 TapeExtension->TapePosition.LogFwd = FALSE;
                     89: 
                     90:             }
                     91:         }
                     92:     }
                     93: 
                     94:     Q117iDLockUnlockDMA(TapeExtension, FALSE);
                     95: 
                     96:     return(retval);
                     97: }

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