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iwmreg.h revision 1.1 
      1 /* $Id: iwmreg.h,v 1.1 1999/02/18 07:38:26 scottr Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1996-98 Hauke Fath.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 #ifndef _MAC68K_IWMREG_H
     29 #define _MAC68K_IWMREG_H
     30 
     31 /*
     32  * iwmreg.h -- Interface declarations for iwm.
     33  */
     34 
     35 /*
     36  * Configuration
     37  */
     38 int 	iwmInit(void);
     39 
     40 /* Virtual Drive flags register */
     41 enum dFlags {
     42 	IWM_DS_DISK	= 0x01,
     43 	IWM_NO_DISK 	= 0x02,
     44 	IWM_MOTOR_OFF 	= 0x04,
     45 	IWM_WRITEABLE	= 0x08,
     46 	IWM_DD_DISK 	= 0x10,
     47 	IWM_NO_DRIVE 	= 0x80000000
     48 };
     49 int 	iwmCheckDrive(int drive);
     50 
     51 /*
     52  * Access
     53  */
     54 enum dErrors {
     55 	noDriveErr = -64,	/* Drive not installed			  */
     56 	offLinErr = -65,	/* R/W requested for an offline drive	  */
     57 	noNybErr = -66,		/* Disk is probably blank		  */
     58 	noAdrMkErr = -67,	/* Can't find an address mark		  */
     59 	dataVerErr = -68,	/* Read verify compare failed		  */
     60 	badCkSmErr = -69,	/* Bad address mark checksum		  */
     61 	badBtSlpErr = -70,	/* Bad address mark (no lead-out)	  */
     62 	noDtaMkErr = -71,	/* Could not find a data mark		  */
     63 	badDCkSum = -72,	/* Bad data mark checksum		  */
     64 	badDBtSlp = -73,	/* One of the data mark bit slip 	  */
     65 				/* nibbles was incorrect.		  */
     66 	wrUnderRun = -74,	/* Could not write fast enough to  	  */
     67 				/* keep up with the IWM			  */
     68 	cantStepErr = -75,	/*  Step handshake failed during seek	  */
     69 	tk0BadErr = -76,	/* Track 00 sensor does not change 	  */
     70 				/* during head calibration		  */
     71 	initIWMErr = -77,	/* Unable to initialize IWM		  */
     72 	twoSideErr = -78,	/* Tried to access a double-sided disk    */
     73 				/* on a single-sided drive (400K drive)	  */
     74 	spAdjErr = -79,		/* Can't adjust drive speed (400K drive)  */
     75 	seekErr = -80,		/* Wrong track number read in a sector's  */
     76 				/* address field		 	  */
     77 	sectNFErr = -81,	/* Sector number never found on a track	  */
     78 	fmt1Err = -82,		/* Can't find sector 0 after track format */
     79 	fmt2Err = -83,		/* Can't get enough sync		  */
     80 	verErr = -84		/* Track failed to verify		  */
     81 };
     82 typedef enum dErrors dErrors_t;
     83 
     84 /*
     85  * This is byte-aligned (just in case anyone's interested...)
     86  */
     87 struct sectorHdr {
     88 	u_int8_t side;
     89 	u_int8_t track;
     90 	u_int8_t sector;
     91 	u_int8_t Tags[13];	/* XXX Looks like it, although IM	*/
     92 				/*     specifies 12 tag bytes	 	*/
     93 };
     94 typedef struct sectorHdr sectorHdr_t;
     95 
     96 int	iwmSelectDrive __P((int drive));
     97 int	iwmSelectSide __P((int side));
     98 int	iwmTrack00 __P((void));
     99 int	iwmSeek __P((int steps));
    100 
    101 int	iwmReadSector __P((caddr_t buf, sectorHdr_t *hdr));
    102 int	iwmWriteSector __P((caddr_t buf, sectorHdr_t *hdr));
    103 
    104 int	iwmDiskEject __P((int drive));		/* drive = [0..1]	 */
    105 int	iwmMotor __P((int drive, int onOff));	/* on(1)/off(0)		 */
    106 
    107 /*
    108  * Debugging only
    109  */
    110 int	iwmQueryDrvFlag __P((int drive, int reg)); /* reg = [0..15]	 */
    111 
    112 /* Make sure we run at splhigh when calling! */
    113 int	iwmReadSectHdr __P((sectorHdr_t *hdr));
    114 
    115 int	iwmReadRawSector __P((int ID, caddr_t buf));
    116 int	iwmWriteRawSector __P((int ID, caddr_t buf));
    117 int	iwmReadRawTrack __P((int mode, caddr_t buf));
    118 
    119 #endif /* _MAC68K_IWMREG_H */
    120