1 /* $NetBSD: iwmreg.h,v 1.8 2007/03/04 06:00:09 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1996-99 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 #ifndef _LOCORE 36 37 /* 38 * Configuration 39 */ 40 41 /* Virtual Drive flags register */ 42 enum { 43 IWM_DS_DISK = 0x01, 44 IWM_NO_DISK = 0x02, 45 IWM_MOTOR_OFF = 0x04, 46 IWM_WRITABLE = 0x08, 47 IWM_DD_DISK = 0x10, 48 IWM_NO_DRIVE = 0x80000000 49 }; 50 51 /* 52 * Access 53 */ 54 enum { 55 noErr = 0, /* All went well */ 56 noDriveErr = -64, /* Drive not installed */ 57 offLinErr = -65, /* R/W requested for an offline drive */ 58 noNybErr = -66, /* Disk is probably blank */ 59 noAdrMkErr = -67, /* Can't find an address mark */ 60 dataVerErr = -68, /* Read verify compare failed */ 61 badCkSmErr = -69, /* Bad address mark checksum */ 62 badBtSlpErr = -70, /* Bad address mark (no lead-out) */ 63 noDtaMkErr = -71, /* Could not find a data mark */ 64 badDCkSum = -72, /* Bad data mark checksum */ 65 badDBtSlp = -73, /* One of the data mark bit slip */ 66 /* nibbles was incorrect. */ 67 wrUnderRun = -74, /* Could not write fast enough to */ 68 /* keep up with the IWM */ 69 cantStepErr = -75, /* Step handshake failed during seek */ 70 tk0BadErr = -76, /* Track 00 sensor does not change */ 71 /* during head calibration */ 72 initIWMErr = -77, /* Unable to initialize IWM */ 73 twoSideErr = -78, /* Tried to access a double-sided disk */ 74 /* on a single-sided drive (400K drive) */ 75 spAdjErr = -79, /* Can't adjust drive speed (400K drive) */ 76 seekErr = -80, /* Wrong track number read in a sector's */ 77 /* address field */ 78 sectNFErr = -81, /* Sector number never found on a track */ 79 fmt1Err = -82, /* Can't find sector 0 after track format */ 80 fmt2Err = -83, /* Can't get enough sync */ 81 verErr = -84 /* Track failed to verify */ 82 }; 83 84 #define IWM_TAG_SIZE 20 /* That's what "SonyEqu.a" says */ 85 86 87 /* Buffer for sector header data */ 88 struct sectorHdr { 89 u_int8_t side; 90 u_int8_t track; 91 u_int8_t sector; 92 u_int8_t Tags[IWM_TAG_SIZE]; 93 }; 94 typedef struct sectorHdr sectorHdr_t; 95 96 /* 97 * Cylinder cache data structure 98 * Cyl buffer is allocated in fdopen() and deallocated in fdclose(). 99 * 100 * The "valid" flag is overloaded as "dirty" flag when writing 101 * to disk. 102 */ 103 struct cylCacheSlot { 104 unsigned char *secbuf; /* ptr to one sector buffer */ 105 int32_t valid; /* content valid for cur. cylinder? */ 106 }; 107 typedef struct cylCacheSlot cylCacheSlot_t; 108 109 110 #else /* _LOCORE */ 111 112 113 /* 114 * Assembler equates for IWM, kept here to ensure consistency. 115 * Modelled after <sys/disklabel.h> 116 */ 117 118 /* 119 * Offsets into data structures 120 */ 121 /* sectorHdr_t */ 122 .equ o_side, 0 123 .equ o_track, 1 124 .equ o_sector, 2 125 .equ o_Tags, 3 126 127 /* cylCacheSlot_t */ 128 .equ o_secbuf, 0 129 .equ o_valid, 4 130 131 /* 132 * Parameter (a6) offsets from <mac68k/obio/iwm_fdvar.h> 133 * 134 * int iwmReadSector(sectorHdr_t *hdr, cylCacheSlot_t *r_slots, void *buf) 135 * int iwmWriteSector(sectorHdr_t *hdr, cylCacheSlot_t *w_slots) 136 */ 137 .equ o_hdr, 8 138 .equ o_rslots, 12 139 .equ o_wslots, 12 140 .equ o_buf, 16 141 142 /* 143 * Offsets from IWM base address 144 * Lines are set by any memory access to corresponding address (IM III-34/-44). 145 * The SWIM has actual registers at these addresses, so writing to them 146 * in IWM mode is a no-no. 147 */ 148 .equ ph0L, 0x0000 /* CA0 off (0) */ 149 .equ ph0H, 0x0200 /* CA0 on (1) */ 150 .equ ph1L, 0x0400 /* CA1 off (0) */ 151 .equ ph1H, 0x0600 /* CA1 on (1) */ 152 .equ ph2L, 0x0800 /* CA2 off (0) */ 153 .equ ph2H, 0x0A00 /* CA2 on (1) */ 154 .equ ph3L, 0x0C00 /* LSTRB off (low) */ 155 .equ ph3H, 0x0E00 /* LSTRB on (high) */ 156 .equ mtrOff, 0x1000 /* disk enable off */ 157 .equ mtrOn, 0x1200 /* disk enable on */ 158 .equ intDrive, 0x1400 /* select internal drive */ 159 .equ extDrive, 0x1600 /* select external drive */ 160 .equ q6L, 0x1800 /* Q6 off */ 161 .equ q6H, 0x1A00 /* Q6 on */ 162 .equ q7L, 0x1C00 /* Q7 off */ 163 .equ q7H, 0x1E00 /* Q7 on */ 164 165 166 /* 167 * VIA Disk SEL line 168 */ 169 .equ vBufA, 0x1E00 /* Offset from vBase to register A */ 170 /* (IM III-43) */ 171 .equ vHeadSel, 5 /* Multi-purpose line (SEL) */ 172 .equ vHeadSelMask, 0x0020 /* Corresponding bit mask */ 173 174 175 /* 176 * Disk registers 177 * bit 0 - CA2, bit 1 - SEL, bit 2 - CA0, bit 3 - CA1 IM III name 178 */ 179 180 /* Status */ 181 .equ stepDirection, 0x0000 /* Direction of next head step */ 182 /* 0 = in, 1 = out (DIRTN) */ 183 .equ rdDataFrom0, 0x0001 /* Set up drive to read data from */ 184 /* head 0 (RDDATA0) */ 185 .equ diskInserted, 0x0002 /* Disk inserted */ 186 /* 0 = yes, 1 = no (CSTIN) */ 187 .equ rdDataFrom1, 0x0003 /* Set up drive to read data from */ 188 /* head 1 (RDDATA1) */ 189 .equ stillStepping, 0x0004 /* Drive is still stepping */ 190 /* 0 = yes, 1 = no (STEP) */ 191 .equ writeProtected, 0x0006 /* Disk is locked */ 192 /* 0 = yes, 1 = no (WRTPRT) */ 193 .equ drvMotorState, 0x0008 /* Drive motor is on */ 194 /* 0 = yes, 1 = no (MOTORON) */ 195 .equ singleSided, 0x0009 /* Drive is single-sided */ 196 /* 0 = yes, 1 = no (SIDES) */ 197 .equ atTrack00, 0x000A /* Head is at track 00 */ 198 /* 0 = yes, 1 = no (TK0) */ 199 .equ headLoaded, 0x000B /* Head loaded, drive is ready */ 200 /* 0 = yes, 1 = no () */ 201 .equ drvInstalled, 0x000D /* Disk drive installed */ 202 /* 0 = yes, 1 = no () */ 203 .equ tachPulse, 0x000E /* Tachometer pulse (60 /rev.) */ 204 /* 0 = yes, 1 = no (TACH) */ 205 .equ diskIsHD, 0x000F /* HD disk detected */ 206 /* 0 = yes, 1 = no (DRVIN) */ 207 208 /* Commands */ 209 .equ stepInCmd, 0x0000 /* Head step direction in (DIRTN) */ 210 .equ stepOutCmd, 0x0001 /* Head step direction out (DIRTN+1) */ 211 .equ doStepCmd, 0x0004 /* Step head (STEP) */ 212 .equ motorOnCmd, 0x0008 /* Switch drive motor on (MOTORON) */ 213 .equ motorOffCmd, 0x0009 /* Switch drive motor off (MOTOROFF) */ 214 .equ ejectDiskCmd, 0x000D /* Eject disk from drive (EJECT) */ 215 216 217 /* 218 * Low level disk errors 219 * For simplicity, they are given the MacOS names and numbers. 220 */ 221 .equ noErr, 0 /* All went well */ 222 .equ noDriveErr, -64 /* Drive not installed */ 223 .equ offLinErr, -65 /* R/W requested for an offline drive */ 224 .equ noNybErr, -66 /* Disk is probably blank */ 225 .equ noAdrMkErr, -67 /* Can't find an address mark */ 226 .equ dataVerErr, -68 /* Read verify compare failed */ 227 .equ badCkSmErr, -69 /* Bad address mark checksum */ 228 .equ badBtSlpErr, -70 /* Bad address mark (no lead-out) */ 229 .equ noDtaMkErr, -71 /* Could not find a data mark */ 230 .equ badDCkSum, -72 /* Bad data mark checksum */ 231 .equ badDBtSlp, -73 /* One of the data mark bit slip */ 232 /* nibbles was incorrect. */ 233 .equ wrUnderRun, -74 /* Could not write fast enough to */ 234 /* keep up with the IWM */ 235 .equ cantStepErr, -75 /* Step handshake failed during seek */ 236 .equ tk0BadErr, -76 /* Track 00 sensor does not change */ 237 /* during head calibration */ 238 .equ initIWMErr, -77 /* Unable to initialize IWM */ 239 .equ twoSideErr, -78 /* Tried to access a double-sided disk */ 240 /* on a single-sided drive (400K drive) */ 241 .equ spAdjErr, -79 /* Can't adjust drive speed (400K drive) */ 242 .equ seekErr, -80 /* Wrong track number read in a */ 243 /* sector's address field */ 244 .equ sectNFErr, -81 /* Sector number never found on a track */ 245 .equ fmt1Err, -82 /* Can't find sector 0 after */ 246 /* track format */ 247 .equ fmt2Err, -83 /* Can't get enough sync */ 248 .equ verErr, -84 /* Track failed to verify */ 249 250 /* 251 * Misc constants 252 */ 253 .equ iwmMode, 0x17 /* SWIM switch */ 254 .equ maxGCRSectors, 12 /* Max. sectors per track for GCR */ 255 256 257 #endif /* _LOCORE */ 258 259 #endif /* _MAC68K_IWMREG_H */ 260