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Annotation of ntddk/src/scsi/qic117/getstat.c, revision 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:     getstat.c
        !             9: 
        !            10: Abstract:
        !            11: 
        !            12:     Gets the status of the tape drive (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: Q117iGetStatus(
        !            37:     IN PTAPE_EXTENSION TapeExtension,
        !            38:     OUT UCHAR *StatusRegister3
        !            39:     )
        !            40: 
        !            41: /*++
        !            42: 
        !            43: Routine Description:
        !            44: 
        !            45:     Get status byte from NEC floppy controller chip.
        !            46: 
        !            47:         Send the Sense Drive Status command to the floppy controller
        !            48: 
        !            49:         Read the response from the floppy controller which should be satus
        !            50:         register 3.
        !            51: 
        !            52: Arguments:
        !            53: 
        !            54:     TapeExtension -
        !            55: 
        !            56:     StatusRegister3 -
        !            57: 
        !            58: Return Value:
        !            59: 
        !            60: --*/
        !            61: 
        !            62: {
        !            63:     STATUS retval;
        !            64:     SHORT statLength;
        !            65:     struct sns_stat_cmd sendSt;
        !            66:     FDC_STATUS status;
        !            67: 
        !            68:     sendSt.command = 0x04;
        !            69:     sendSt.drive = (UCHAR)TapeExtension->DriveParms.DriveSelect;
        !            70: 
        !            71:     if((retval = Q117iProgramFDC(TapeExtension,
        !            72:                                 (CHAR *)&sendSt,
        !            73:                                 sizeof(sendSt),
        !            74:                                 FALSE)) != NoErr) {
        !            75: 
        !            76:         return(retval);
        !            77: 
        !            78:     }
        !            79: 
        !            80:     if((retval = Q117iReadFDC(TapeExtension,
        !            81:                             (CHAR *)&status,
        !            82:                             (SHORT *)&statLength)) != NoErr) {
        !            83: 
        !            84:         return(retval);
        !            85: 
        !            86:     }
        !            87: 
        !            88:     if(statLength != 1) {
        !            89: 
        !            90:         return(NECFlt);
        !            91: 
        !            92:     }
        !            93: 
        !            94:     *StatusRegister3 = status.ST0;
        !            95:     return(retval);
        !            96: }
        !            97: 

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