/* $Id: iwm_fdvar.h,v 1.2 1999/02/18 07:50:54 scottr Exp $ */ /* * Copyright (c) 1997, 1998 Hauke Fath. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _MAC68K_FDVAR_H #define _MAC68K_FDVAR_H /** ** Constants **/ /* Number of attachable drives */ #define IWM_MAX_DRIVE 2 /* Number of zones on GCR disk */ #define IWM_GCR_DISK_ZONES 5 /* Larger than the highest sector number likely */ #define IWM_MAX_FLOPPY_SECT 50 /* Physical track format codes */ enum { IWM_GCR, /* Apple's Group Code Recording format */ IWM_MFM_DD, /* Standard MFM on DD disk (250 KBit/s) */ IWM_MFM_HD /* Standard MFM on HD disk (500 KBit/s) */ }; /* Drive softc flags */ enum { IWM_FD_IS_OPEN = 0x00000001, IWM_FD_MOTOR_ON = 0x00000002 }; /* seek() behaviour */ enum { IWM_SEEK_VANILLA, IWM_SEEK_RECAL, IWM_SEEK_VERIFY }; /** ** Data Types **/ /* * Floppy disk format information * * XXX How to describe ZBR here? UN*X disk drive handling -- clinging * tenaciously to the trailing edge of technology... */ struct fdInfo { short heads; /* # of heads the drive has */ short tracks; /* # of tracks per side (cyl's) */ short sectorSize; /* Bytes per sector */ short secPerTrack; /* fake */ short secPerCyl; /* fake */ short secPerDisk; /* # of sectors per __disk__ */ short stepRate; /* in ms (is a software delay) */ short interleave; /* Sector interleave */ short physFormat; /* GCR, MFM DD, MFM HD */ char *description; }; typedef struct fdInfo fdInfo_t; /* * Current physical location on Sony GCR disk */ struct diskPosition { short track; short oldTrack; short side; short sector; short maxSect; /* Highest sector # for this track */ }; typedef struct diskPosition diskPosition_t; /* * Zone recording scheme (per disk surface/head) */ struct diskZone { short tracks; /* # of tracks per zone */ short sectPerTrack; short firstBlock; short lastBlock; }; typedef struct diskZone diskZone_t; /* * Arguments passed between iwmAttach() and the fd probe routines. */ struct iwmAttachArgs { fdInfo_t *driveType; /* Default drive parameters */ short unit; /* Current drive # */ }; typedef struct iwmAttachArgs iwmAttachArgs_t; /* * Software state per disk: the IWM can have max. 2 drives. Newer * machines don't even have a port for an external drive. * */ struct fd_softc { struct device devInfo; /* generic device info */ struct disk diskInfo; /* generic disk info */ struct buf bufQueue; /* queue of buf's */ /* private stuff here */ daddr_t startBlk; /* Starting block # */ int bytesLeft; /* Bytes left to transfer */ int bytesDone; /* Bytes transferred */ int drvFlags; /* Copy of drive flags */ short unit; /* Drive # as seen by IWM */ short partition; /* "Partition" info {a,b,c,...} */ fdInfo_t *defaultType; /* default floppy format */ fdInfo_t *currentType; /* current floppy format */ int state; /* XXX */ void *trackBuf; /* Pointer to track buffer */ short stepDirection; /* Current step direction */ diskPosition_t pos; /* Physical position on disk */ int writeLabel; /* Write access to disklabel? */ }; typedef struct fd_softc fd_softc_t; /* * Software state of IWM controller * * SWIM/MFM mode may have some state to keep here. */ struct iwm_softc { struct device devInfo; /* generic device info */ int drives; /* # of attached fd's */ fd_softc_t *fd[IWM_MAX_DRIVE]; /* ptrs to children */ int state; /* make that an enum? */ u_char modeReg; /* Copy of IWM mode register */ short maxRetries; /* I/O retries */ int errors; int underruns; /* data not delivered in time */ }; typedef struct iwm_softc iwm_softc_t; /** ** Exported functions **/ /* * IWM Loadable Kernel Module : Exported functions */ #ifdef _LKM int fdModInit __P((void)); void fdModFree __P((void)); #endif /* * This is the exported driver interface * (bdevsw[] & cdevsw[] function prototypes) * * (see */ dev_type_open(fdopen); dev_type_close(fdclose); dev_type_strategy(fdstrategy); dev_type_read(fdread); dev_type_write(fdwrite); dev_type_ioctl(fdioctl); dev_type_size(fdsize); dev_type_dump(fddump); int iwmSelectDrive __P((int drive)); int iwmSelectSide __P((int side)); int iwmTrack00 __P((void)); int iwmSeek __P((int steps)); int iwmReadSector __P((caddr_t buf, sectorHdr_t *hdr)); int iwmWriteSector __P((caddr_t buf, sectorHdr_t *hdr)); int iwmDiskEject __P((int drive)); /* drive = [0..1] */ int iwmMotor __P((int drive, int onOff)); /* on(1)/off(0) */ /* * Debugging only */ int iwmQueryDrvFlag __P((int drive, int reg)); /* reg = [0..15] */ /* Make sure we run at splhigh when calling! */ int iwmReadSectHdr __P((sectorHdr_t *hdr)); int iwmReadRawSector __P((int ID, caddr_t buf)); int iwmWriteRawSector __P((int ID, caddr_t buf)); int iwmReadRawTrack __P((int mode, caddr_t buf)); #endif /* _MAC68K_FDVAR_H */