1 /* 2 * Copyright (c) 1988 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Computer Consoles Inc. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)cyreg.h 7.8 (Berkeley) 06/28/90 11 */ 12 13 /* 14 * Tapemaster controller definitions. 15 */ 16 17 /* 18 * With 20-bit addressing, the intermediate buffer 19 * must be allocated early in startup(). 20 */ 21 #define CYMAXIO (64*1024) /* max i/o size + 1 */ 22 char *cybuf; 23 24 /* for byte swapping Multibus values */ 25 #define htoms(x) (u_short)((((x)>>8)&0xff) | (((x)<<8)&0xff00)) 26 27 #define b_repcnt b_bcount 28 #define b_command b_resid 29 30 /* 31 * System configuration pointer. 32 * Memory address is jumpered on controller. 33 */ 34 struct cyscp { 35 char csp_buswidth; /* system bus width */ 36 #define CSP_16BITS 1 /* 16-bit system bus */ 37 #define CSP_8BITS 0 /* 8-bit system bus */ 38 char csp_unused; 39 u_char csp_scb[4]; /* point to system config block */ 40 }; 41 42 /* 43 * System configuration block 44 */ 45 struct cyscb { 46 char csb_fixed; /* fixed value code (must be 3) */ 47 char csb_unused; /* unused */ 48 u_char csb_ccb[4]; /* pointer to channel control block */ 49 }; 50 51 #define CSB_FIXED 0x3 52 53 /* 54 * Channel control block definitions 55 */ 56 struct cyccb { 57 char cbcw; /* channel control word */ 58 char cbgate; /* tpb access gate */ 59 u_char cbtpb[4]; /* first tape parameter block */ 60 }; 61 62 #define GATE_OPEN (char)(0x00) 63 #define GATE_CLOSED (char)(0xff) 64 65 #define CY_GO(addr) movob((addr), 0xff) /* channel attention */ 66 #define CY_RESET(addr) movob((addr)+1, 0xff) /* software controller reset */ 67 68 #define CBCW_IE 0x11 /* interrupt on cmd completion */ 69 #define CBCW_CLRINT 0x09 /* clear active interrupt */ 70 71 /* 72 * Tape parameter block definitions 73 */ 74 struct cytpb { 75 u_long tpcmd; /* command, see below */ 76 u_short tpcontrol; /* control word */ 77 u_short tpcount; /* return count */ 78 u_short tpsize; /* buffer size */ 79 u_short tprec; /* records/overrun */ 80 u_char tpdata[4]; /* pointer to source/dest */ 81 u_short tpstatus; /* status */ 82 u_char tplink[4]; /* pointer to next parameter block */ 83 }; 84 85 /* control field bit definitions */ 86 #define CYCW_UNIT (0x000c<<8) /* unit select mask, 2 bit field */ 87 #define CYCW_IE (0x0020<<8) /* interrupt enable */ 88 #define CYCW_LOCK (0x0080<<8) /* bus lock flag */ 89 #define CYCW_REV (0x0400>>8) /* reverse flag */ 90 #define CYCW_SPEED (0x0800>>8) /* speed/density */ 91 #define CYCW_25IPS 0 92 #define CYCW_100IPS (0x0800>>8) 93 #define CYCW_WIDTH (0x8000>>8) /* width */ 94 #define CYCW_8BITS 0 95 #define CYCW_16BITS (0x8000>>8) 96 97 #define CYCW_BITS "\20\3REV\005100IPS\00716BITS\16IE\20LOCK" 98 99 /* 100 * Controller commands 101 */ 102 103 /* control status/commands */ 104 #define CY_CONFIG (0x00<<24) /* configure */ 105 #define CY_NOP (0x20<<24) /* no operation */ 106 #define CY_SETPAGE (0x08<<24) /* set page (addr bits 20-23) */ 107 #define CY_SENSE (0x28<<24) /* drive status */ 108 #define CY_CLRINT (0x9c<<24) /* clear Multibus interrupt */ 109 110 /* tape position commands */ 111 #define CY_REW (0x34<<24) /* rewind tape */ 112 #define CY_OFFL (0x38<<24) /* off_line and unload */ 113 #define CY_WEOF (0x40<<24) /* write end-of-file mark */ 114 #define CY_SFORW (0x70<<24) /* space record forward */ 115 #define CY_SREV (CY_SFORW|CYCW_REV) /* space record backwards */ 116 #define CY_FSF (0x44<<24) /* space file forward */ 117 #define CY_BSF (CY_FSF|CYCW_REV) /* space file backwards */ 118 #define CY_ERASE (0x4c<<24) /* erase record */ 119 120 /* data transfer commands */ 121 #define CY_BRCOM (0x10<<24) /* read buffered */ 122 #define CY_BWCOM (0x14<<24) /* write buffered */ 123 #define CY_RCOM (0x2c<<24) /* read tape unbuffered */ 124 #define CY_WCOM (0x30<<24) /* write tape unbuffered */ 125 126 /* status field bit definitions */ 127 #define CYS_WP (0x0002<<8) /* write protected, no write ring */ 128 #define CYS_BSY (0x0004<<8) /* formatter busy */ 129 #define CYS_RDY (0x0008<<8) /* drive ready */ 130 #define CYS_EOT (0x0010<<8) /* end of tape detected */ 131 #define CYS_BOT (0x0020<<8) /* tape is at load point */ 132 #define CYS_OL (0x0040<<8) /* drive on_line */ 133 #define CYS_FM (0x0080<<8) /* filemark detected */ 134 #define CYS_ERR (0x1f00>>8) /* error value mask */ 135 #define CYS_CR (0x2000>>8) /* controller executed retries */ 136 #define CYS_CC (0x4000>>8) /* command completed successfully */ 137 #define CYS_CE (0x8000>>8) /* command execution has begun */ 138 139 #define CYS_BITS "\20\6CR\7CC\10CE\12WP\13BSY\14RDY\15EOT/BOT\16BOT\17OL\20FM" 140 141 /* error codes for CYS_ERR */ 142 #define CYER_TIMOUT 0x01 /* timed out data busy false */ 143 #define CYER_TIMOUT1 0x02 /* data busy false,formatter,ready */ 144 #define CYER_TIMOUT2 0x03 /* time out ready busy false */ 145 #define CYER_TIMOUT3 0x04 /* time out ready busy true */ 146 #define CYER_TIMOUT4 0x05 /* time out data busy true */ 147 #define CYER_NXM 0x06 /* time out memory */ 148 #define CYER_BLANK 0x07 /* blank tape */ 149 #define CYER_DIAG 0x08 /* micro-diagnostic */ 150 #define CYER_EOT 0x09 /* EOT forward, BOT rev. */ 151 #define CYER_BOT 0x09 /* EOT forward, BOT rev. */ 152 #define CYER_HERR 0x0a /* retry unsuccessful */ 153 #define CYER_FIFO 0x0b /* FIFO over/under flow */ 154 #define CYER_PARITY 0x0d /* drive to tapemaster parity error */ 155 #define CYER_CKSUM 0x0e /* prom checksum */ 156 #define CYER_STROBE 0x0f /* time out tape strobe */ 157 #define CYER_NOTRDY 0x10 /* tape not ready */ 158 #define CYER_PROT 0x11 /* write, no enable ring */ 159 #define CYER_JUMPER 0x13 /* missing diagnostic jumper */ 160 #define CYER_LINK 0x14 /* bad link, link inappropriate */ 161 #define CYER_FM 0x15 /* unexpected filemark */ 162 #define CYER_PARAM 0x16 /* bad parameter, byte count ? */ 163 #define CYER_HDWERR 0x18 /* unidentified hardware error */ 164 #define CYER_NOSTRM 0x19 /* streaming terminated */ 165 166 #ifdef CYERROR 167 char *cyerror[] = { 168 "no error", 169 "timeout", 170 "timeout1", 171 "timeout2", 172 "timeout3", 173 "timeout4", 174 "non-existent memory", 175 "blank tape", 176 "micro-diagnostic", 177 "eot/bot detected", 178 "retry unsuccessful", 179 "fifo over/under-flow", 180 "#0xc", 181 "drive to controller parity error", 182 "prom checksum", 183 "time out tape strobe (record length error)", 184 "tape not ready", 185 "write protected", 186 "#0x12", 187 "missing diagnostic jumper", 188 "invalid link pointer", 189 "unexpected file mark", 190 "invalid byte count/parameter", 191 "#0x17", 192 "unidentified hardware error", 193 "streaming terminated" 194 }; 195 #define NCYERROR (sizeof (cyerror) / sizeof (cyerror[0])) 196 #endif 197 198 /* 199 * Masks defining hard and soft errors (must check against 1<<CYER_code). 200 */ 201 #define CYMASK(e) (1 << (e)) 202 #define CYER_HARD (CYMASK(CYER_TIMOUT)|CYMASK(CYER_TIMOUT1)|\ 203 CYMASK(CYER_TIMOUT2)|CYMASK(CYER_TIMOUT3)|CYMASK(CYER_TIMOUT4)|\ 204 CYMASK(CYER_NXM)|CYMASK(CYER_DIAG)|CYMASK(CYER_JUMPER)|\ 205 CYMASK(CYER_STROBE)|CYMASK(CYER_PROT)|CYMASK(CYER_CKSUM)|\ 206 CYMASK(CYER_HERR)|CYMASK(CYER_BLANK)) 207 #define CYER_RSOFT (CYMASK(CYER_FIFO)|CYMASK(CYER_NOTRDY)|\ 208 CYMASK(CYER_PARITY)) 209 #define CYER_WSOFT (CYMASK(CYER_HERR)|CYMASK(CYER_FIFO)|\ 210 CYMASK(CYER_NOTRDY)|CYMASK(CYER_PARITY)) 211