1 /* cyreg.h 7.3 87/01/11 */ 2 3 /* 4 * Tapemaster controller definitions. 5 */ 6 7 /* for byte swapping Multibus values */ 8 #define htoms(x) (short)((((x)>>8)&0xff) | (((x)<<8)&0xff00)) 9 10 #define b_repcnt b_bcount 11 #define b_command b_resid 12 13 /* 14 * System configuration pointer. 15 * Memory address is jumpered on controller. 16 */ 17 struct cyscp { 18 char csp_buswidth; /* system bus width */ 19 #define CSP_16BITS 1 /* 16-bit system bus */ 20 #define CSP_8BITS 0 /* 8-bit system bus */ 21 char csp_unused; 22 u_char csp_scb[4]; /* point to system config block */ 23 }; 24 25 /* 26 * System configuration block 27 */ 28 struct cyscb { 29 char csb_fixed; /* fixed value code (must be 3) */ 30 char csb_unused; /* unused */ 31 u_char csb_ccb[4]; /* pointer to channel control block */ 32 }; 33 34 #define CSB_FIXED 0x3 35 36 /* 37 * Channel control block definitions 38 */ 39 struct cyccb { 40 char cbcw; /* channel control word */ 41 char cbgate; /* tpb access gate */ 42 u_char cbtpb[4]; /* first tape parameter block */ 43 }; 44 45 #define GATE_OPEN (char)(0x00) 46 #define GATE_CLOSED (char)(0xff) 47 48 #define CY_GO(addr) movob((addr), 0xff) /* channel attention */ 49 #define CY_RESET(addr) movob((addr)+1, 0xff) /* software controller reset */ 50 51 #define CBCW_IE 0x11 /* interrupt on cmd completion */ 52 #define CBCW_CLRINT 0x09 /* clear active interrupt */ 53 54 /* 55 * Tape parameter block definitions 56 */ 57 struct cytpb { 58 long tpcmd; /* command, see below */ 59 short tpcontrol; /* control word */ 60 short tpcount; /* return count */ 61 short tpsize; /* buffer size */ 62 short tprec; /* records/overrun */ 63 u_char tpdata[4]; /* pointer to source/dest */ 64 short tpstatus; /* status */ 65 u_char tplink[4]; /* pointer to next parameter block */ 66 }; 67 68 /* control field bit definitions */ 69 #define CYCW_UNIT (0x000c<<8) /* unit select mask, 2 bit field */ 70 #define CYCW_IE (0x0020<<8) /* interrupt enable */ 71 #define CYCW_LOCK (0x0080<<8) /* bus lock flag */ 72 #define CYCW_REV (0x0400>>8) /* reverse flag */ 73 #define CYCW_SPEED (0x0800>>8) /* speed/density */ 74 #define CYCW_25IPS 0 75 #define CYCW_100IPS (0x0800>>8) 76 #define CYCW_WIDTH (0x8000>>8) /* width */ 77 #define CYCW_8BITS 0 78 #define CYCW_16BITS (0x8000>>8) 79 80 #define CYCW_BITS "\20\3REV\005100IPS\00716BITS\16IE\20LOCK" 81 82 /* 83 * Controller commands 84 */ 85 86 /* control status/commands */ 87 #define CY_CONFIG (0x00<<24) /* configure */ 88 #define CY_NOP (0x20<<24) /* no operation */ 89 #define CY_SETPAGE (0x08<<24) /* set page (addr bits 20-23) */ 90 #define CY_SENSE (0x28<<24) /* drive status */ 91 #define CY_CLRINT (0x9c<<24) /* clear Multibus interrupt */ 92 93 /* tape position commands */ 94 #define CY_REW (0x34<<24) /* rewind tape */ 95 #define CY_OFFL (0x38<<24) /* off_line and unload */ 96 #define CY_WEOF (0x40<<24) /* write end-of-file mark */ 97 #define CY_SFORW (0x70<<24) /* space record forward */ 98 #define CY_SREV (CY_SFORW|CYCW_REV) /* space record backwards */ 99 #define CY_FSF (0x44<<24) /* space file forward */ 100 #define CY_BSF (CY_FSF|CYCW_REV) /* space file backwards */ 101 #define CY_ERASE (0x4c<<24) /* erase record */ 102 103 /* data transfer commands */ 104 #define CY_BRCOM (0x10<<24) /* read buffered */ 105 #define CY_BWCOM (0x14<<24) /* write buffered */ 106 #define CY_RCOM (0x2c<<24) /* read tape unbuffered */ 107 #define CY_WCOM (0x30<<24) /* write tape unbuffered */ 108 109 /* status field bit definitions */ 110 #define CYS_WP (0x0002<<8) /* write protected, no write ring */ 111 #define CYS_BSY (0x0004<<8) /* formatter busy */ 112 #define CYS_RDY (0x0008<<8) /* drive ready */ 113 #define CYS_EOT (0x0010<<8) /* end of tape detected */ 114 #define CYS_BOT (0x0020<<8) /* tape is at load point */ 115 #define CYS_OL (0x0040<<8) /* drive on_line */ 116 #define CYS_FM (0x0080<<8) /* filemark detected */ 117 #define CYS_ERR (0x1f00>>8) /* error value mask */ 118 #define CYS_CR (0x2000>>8) /* controller executed retries */ 119 #define CYS_CC (0x4000>>8) /* command completed successfully */ 120 #define CYS_CE (0x8000>>8) /* command execution has begun */ 121 122 #define CYS_BITS "\20\6CR\7CC\10CE\12WP\13BSY\14RDY\15EOT/BOT\16BOT\17OL\20FM" 123 124 /* error codes for CYS_ERR */ 125 #define CYER_TIMOUT 0x01 /* timed out data busy false */ 126 #define CYER_TIMOUT1 0x02 /* data busy false,formatter,ready */ 127 #define CYER_TIMOUT2 0x03 /* time out ready busy false */ 128 #define CYER_TIMOUT3 0x04 /* time out ready busy true */ 129 #define CYER_TIMOUT4 0x05 /* time out data busy true */ 130 #define CYER_NXM 0x06 /* time out memory */ 131 #define CYER_BLANK 0x07 /* blank tape */ 132 #define CYER_DIAG 0x08 /* micro-diagnostic */ 133 #define CYER_EOT 0x09 /* EOT forward, BOT rev. */ 134 #define CYER_BOT 0x09 /* EOT forward, BOT rev. */ 135 #define CYER_HERR 0x0a /* retry unsuccessful */ 136 #define CYER_FIFO 0x0b /* FIFO over/under flow */ 137 #define CYER_PARITY 0x0d /* drive to tapemaster parity error */ 138 #define CYER_CKSUM 0x0e /* prom checksum */ 139 #define CYER_STROBE 0x0f /* time out tape strobe */ 140 #define CYER_NOTRDY 0x10 /* tape not ready */ 141 #define CYER_PROT 0x11 /* write, no enable ring */ 142 #define CYER_JUMPER 0x13 /* missing diagnostic jumper */ 143 #define CYER_LINK 0x14 /* bad link, link inappropriate */ 144 #define CYER_FM 0x15 /* unexpected filemark */ 145 #define CYER_PARAM 0x16 /* bad parameter, byte count ? */ 146 #define CYER_HDWERR 0x18 /* unidentified hardware error */ 147 #define CYER_NOSTRM 0x19 /* streaming terminated */ 148 149 #ifdef CYERROR 150 char *cyerror[] = { 151 "no error", 152 "timeout", 153 "timeout1", 154 "timeout2", 155 "timeout3", 156 "timeout4", 157 "non-existent memory", 158 "blank tape", 159 "micro-diagnostic", 160 "eot/bot detected", 161 "retry unsuccessful", 162 "fifo over/under-flow", 163 "#0xc", 164 "drive to controller parity error", 165 "prom checksum", 166 "time out tape strobe (record length error)", 167 "tape not ready", 168 "write protected", 169 "#0x12", 170 "missing diagnostic jumper", 171 "invalid link pointer", 172 "unexpected file mark", 173 "invalid byte count/parameter", 174 "#0x17", 175 "unidentified hardware error", 176 "streaming terminated" 177 }; 178 #define NCYERROR (sizeof (cyerror) / sizeof (cyerror[0])) 179 #endif 180 181 /* 182 * Masks defining hard and soft errors (must check against 1<<CYER_code). 183 */ 184 #define CYMASK(e) (1<<(CYER_/**/e)) 185 #define CYER_HARD (CYMASK(TIMOUT)|CYMASK(TIMOUT1)|CYMASK(TIMOUT2)|\ 186 CYMASK(TIMOUT3)|CYMASK(TIMOUT4)|CYMASK(NXM)|CYMASK(DIAG)|CYMASK(JUMPER)|\ 187 CYMASK(STROBE)|CYMASK(PROT)|CYMASK(CKSUM)|CYMASK(HERR)|CYMASK(BLANK)) 188 #define CYER_SOFT (CYMASK(FIFO)|CYMASK(NOTRDY)|CYMASK(PARITY)) 189