/* $NetBSD: iwm_fdvar.h,v 1.16 2020/08/10 10:59:33 rin 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. * * 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 **/ enum { IWM_MAX_DRIVE = 2, /* Attachable drives */ IWM_GCR_DISK_ZONES = 5, /* Zones on GCR disk */ IWM_MAX_GCR_SECTORS = 12, /* Max. sectors per GCR track */ IWM_MAX_FLOPPY_SECT = 50, /* Larger than the highest sector */ /* number likely to occur */ }; /* 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 }; /* I/O direction */ enum { IWM_WRITE = 0, IWM_READ }; /** ** 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 */ const 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 { device_t sc_dev; /* generic device info */ struct disk diskInfo; /* generic disk info */ struct bufq_state *bufQueue; /* queue of buf's */ int sc_active; /* number of active requests */ struct callout motor_ch; /* motor callout */ /* private stuff here */ /* errors & retries in current I/O job */ int iwmErr; /* Last IO error */ int ioRetries; int seekRetries; int sectRetries; int verifyRetries; /* hardware info */ int drvFlags; /* Copy of drive flags */ short stepDirection; /* Current step direction */ diskPosition_t pos; /* Physical position on disk */ /* drive info */ 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 */ /* data transfer info */ int ioDirection; /* Read/write */ daddr_t startBlk; /* Starting block # */ int bytesLeft; /* Bytes left to transfer */ int bytesDone; /* Bytes transferred */ char *current_buffer; /* target of current data transfer */ unsigned char *cbuf; /* ptr to cylinder cache */ int cachedSide; /* Which head is cached? */ cylCacheSlot_t r_slots[IWM_MAX_GCR_SECTORS]; cylCacheSlot_t w_slots[IWM_MAX_GCR_SECTORS]; int writeLabel; /* Write access to disklabel? */ sectorHdr_t sHdr; /* current sector header */ }; 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 { 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 _MODULE int fdModInit(void); void fdModFree(void); #endif int iwmInit(void); int iwmCheckDrive(int32_t); int iwmSelectDrive(int32_t); int iwmSelectSide(int32_t); int iwmTrack00(void); int iwmSeek(int32_t); int iwmReadSector(sectorHdr_t *, cylCacheSlot_t *, void *); int iwmWriteSector(sectorHdr_t *, cylCacheSlot_t *); int iwmDiskEject(int32_t); /* drive = [0..1] */ int iwmMotor(int32_t, int32_t); /* on(1)/off(0) */ /* * Debugging only */ int iwmQueryDrvFlag(int32_t, int32_t); /* reg = [0..15] */ /* Make sure we run at splhigh when calling! */ int iwmReadSectHdr(sectorHdr_t *); #if 0 /* XXX not yet */ int iwmReadRawSector(int32_t, void *); int iwmWriteRawSector(int32_t, void *); int iwmReadRawTrack(int32_t, void *); #endif #endif /* _MAC68K_FDVAR_H */
