/* $NetBSD: iwmreg.h,v 1.8 2007/03/04 06:00:09 christos Exp $ */ /* * Copyright (c) 1996-99 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_IWMREG_H #define _MAC68K_IWMREG_H /* * iwmreg.h -- Interface declarations for iwm. */ #ifndef _LOCORE /* * Configuration */ /* Virtual Drive flags register */ enum { IWM_DS_DISK = 0x01, IWM_NO_DISK = 0x02, IWM_MOTOR_OFF = 0x04, IWM_WRITABLE = 0x08, IWM_DD_DISK = 0x10, IWM_NO_DRIVE = 0x80000000 }; /* * Access */ enum { noErr = 0, /* All went well */ noDriveErr = -64, /* Drive not installed */ offLinErr = -65, /* R/W requested for an offline drive */ noNybErr = -66, /* Disk is probably blank */ noAdrMkErr = -67, /* Can't find an address mark */ dataVerErr = -68, /* Read verify compare failed */ badCkSmErr = -69, /* Bad address mark checksum */ badBtSlpErr = -70, /* Bad address mark (no lead-out) */ noDtaMkErr = -71, /* Could not find a data mark */ badDCkSum = -72, /* Bad data mark checksum */ badDBtSlp = -73, /* One of the data mark bit slip */ /* nibbles was incorrect. */ wrUnderRun = -74, /* Could not write fast enough to */ /* keep up with the IWM */ cantStepErr = -75, /* Step handshake failed during seek */ tk0BadErr = -76, /* Track 00 sensor does not change */ /* during head calibration */ initIWMErr = -77, /* Unable to initialize IWM */ twoSideErr = -78, /* Tried to access a double-sided disk */ /* on a single-sided drive (400K drive) */ spAdjErr = -79, /* Can't adjust drive speed (400K drive) */ seekErr = -80, /* Wrong track number read in a sector's */ /* address field */ sectNFErr = -81, /* Sector number never found on a track */ fmt1Err = -82, /* Can't find sector 0 after track format */ fmt2Err = -83, /* Can't get enough sync */ verErr = -84 /* Track failed to verify */ }; #define IWM_TAG_SIZE 20 /* That's what "SonyEqu.a" says */ /* Buffer for sector header data */ struct sectorHdr { u_int8_t side; u_int8_t track; u_int8_t sector; u_int8_t Tags[IWM_TAG_SIZE]; }; typedef struct sectorHdr sectorHdr_t; /* * Cylinder cache data structure * Cyl buffer is allocated in fdopen() and deallocated in fdclose(). * * The "valid" flag is overloaded as "dirty" flag when writing * to disk. */ struct cylCacheSlot { unsigned char *secbuf; /* ptr to one sector buffer */ int32_t valid; /* content valid for cur. cylinder? */ }; typedef struct cylCacheSlot cylCacheSlot_t; #else /* _LOCORE */ /* * Assembler equates for IWM, kept here to ensure consistency. * Modelled after <sys/disklabel.h> */ /* * Offsets into data structures */ /* sectorHdr_t */ .equ o_side, 0 .equ o_track, 1 .equ o_sector, 2 .equ o_Tags, 3 /* cylCacheSlot_t */ .equ o_secbuf, 0 .equ o_valid, 4 /* * Parameter (a6) offsets from <mac68k/obio/iwm_fdvar.h> * * int iwmReadSector(sectorHdr_t *hdr, cylCacheSlot_t *r_slots, void *buf) * int iwmWriteSector(sectorHdr_t *hdr, cylCacheSlot_t *w_slots) */ .equ o_hdr, 8 .equ o_rslots, 12 .equ o_wslots, 12 .equ o_buf, 16 /* * Offsets from IWM base address * Lines are set by any memory access to corresponding address (IM III-34/-44). * The SWIM has actual registers at these addresses, so writing to them * in IWM mode is a no-no. */ .equ ph0L, 0x0000 /* CA0 off (0) */ .equ ph0H, 0x0200 /* CA0 on (1) */ .equ ph1L, 0x0400 /* CA1 off (0) */ .equ ph1H, 0x0600 /* CA1 on (1) */ .equ ph2L, 0x0800 /* CA2 off (0) */ .equ ph2H, 0x0A00 /* CA2 on (1) */ .equ ph3L, 0x0C00 /* LSTRB off (low) */ .equ ph3H, 0x0E00 /* LSTRB on (high) */ .equ mtrOff, 0x1000 /* disk enable off */ .equ mtrOn, 0x1200 /* disk enable on */ .equ intDrive, 0x1400 /* select internal drive */ .equ extDrive, 0x1600 /* select external drive */ .equ q6L, 0x1800 /* Q6 off */ .equ q6H, 0x1A00 /* Q6 on */ .equ q7L, 0x1C00 /* Q7 off */ .equ q7H, 0x1E00 /* Q7 on */ /* * VIA Disk SEL line */ .equ vBufA, 0x1E00 /* Offset from vBase to register A */ /* (IM III-43) */ .equ vHeadSel, 5 /* Multi-purpose line (SEL) */ .equ vHeadSelMask, 0x0020 /* Corresponding bit mask */ /* * Disk registers * bit 0 - CA2, bit 1 - SEL, bit 2 - CA0, bit 3 - CA1 IM III name */ /* Status */ .equ stepDirection, 0x0000 /* Direction of next head step */ /* 0 = in, 1 = out (DIRTN) */ .equ rdDataFrom0, 0x0001 /* Set up drive to read data from */ /* head 0 (RDDATA0) */ .equ diskInserted, 0x0002 /* Disk inserted */ /* 0 = yes, 1 = no (CSTIN) */ .equ rdDataFrom1, 0x0003 /* Set up drive to read data from */ /* head 1 (RDDATA1) */ .equ stillStepping, 0x0004 /* Drive is still stepping */ /* 0 = yes, 1 = no (STEP) */ .equ writeProtected, 0x0006 /* Disk is locked */ /* 0 = yes, 1 = no (WRTPRT) */ .equ drvMotorState, 0x0008 /* Drive motor is on */ /* 0 = yes, 1 = no (MOTORON) */ .equ singleSided, 0x0009 /* Drive is single-sided */ /* 0 = yes, 1 = no (SIDES) */ .equ atTrack00, 0x000A /* Head is at track 00 */ /* 0 = yes, 1 = no (TK0) */ .equ headLoaded, 0x000B /* Head loaded, drive is ready */ /* 0 = yes, 1 = no () */ .equ drvInstalled, 0x000D /* Disk drive installed */ /* 0 = yes, 1 = no () */ .equ tachPulse, 0x000E /* Tachometer pulse (60 /rev.) */ /* 0 = yes, 1 = no (TACH) */ .equ diskIsHD, 0x000F /* HD disk detected */ /* 0 = yes, 1 = no (DRVIN) */ /* Commands */ .equ stepInCmd, 0x0000 /* Head step direction in (DIRTN) */ .equ stepOutCmd, 0x0001 /* Head step direction out (DIRTN+1) */ .equ doStepCmd, 0x0004 /* Step head (STEP) */ .equ motorOnCmd, 0x0008 /* Switch drive motor on (MOTORON) */ .equ motorOffCmd, 0x0009 /* Switch drive motor off (MOTOROFF) */ .equ ejectDiskCmd, 0x000D /* Eject disk from drive (EJECT) */ /* * Low level disk errors * For simplicity, they are given the MacOS names and numbers. */ .equ noErr, 0 /* All went well */ .equ noDriveErr, -64 /* Drive not installed */ .equ offLinErr, -65 /* R/W requested for an offline drive */ .equ noNybErr, -66 /* Disk is probably blank */ .equ noAdrMkErr, -67 /* Can't find an address mark */ .equ dataVerErr, -68 /* Read verify compare failed */ .equ badCkSmErr, -69 /* Bad address mark checksum */ .equ badBtSlpErr, -70 /* Bad address mark (no lead-out) */ .equ noDtaMkErr, -71 /* Could not find a data mark */ .equ badDCkSum, -72 /* Bad data mark checksum */ .equ badDBtSlp, -73 /* One of the data mark bit slip */ /* nibbles was incorrect. */ .equ wrUnderRun, -74 /* Could not write fast enough to */ /* keep up with the IWM */ .equ cantStepErr, -75 /* Step handshake failed during seek */ .equ tk0BadErr, -76 /* Track 00 sensor does not change */ /* during head calibration */ .equ initIWMErr, -77 /* Unable to initialize IWM */ .equ twoSideErr, -78 /* Tried to access a double-sided disk */ /* on a single-sided drive (400K drive) */ .equ spAdjErr, -79 /* Can't adjust drive speed (400K drive) */ .equ seekErr, -80 /* Wrong track number read in a */ /* sector's address field */ .equ sectNFErr, -81 /* Sector number never found on a track */ .equ fmt1Err, -82 /* Can't find sector 0 after */ /* track format */ .equ fmt2Err, -83 /* Can't get enough sync */ .equ verErr, -84 /* Track failed to verify */ /* * Misc constants */ .equ iwmMode, 0x17 /* SWIM switch */ .equ maxGCRSectors, 12 /* Max. sectors per track for GCR */ #endif /* _LOCORE */ #endif /* _MAC68K_IWMREG_H */
