1 /* cyreg.h 7.2 86/01/26 */ 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 * Channel control block definitions 15 */ 16 struct cyccb { 17 char cbcw; /* channel control word */ 18 char cbgate; /* tpb access gate */ 19 short cbtpb[2]; /* first tape parameter block */ 20 }; 21 22 #define GATE_OPEN (char)(0x00) 23 #define GATE_CLOSED (char)(0xff) 24 25 #define CY_GO(addr) movob((addr), 0xff) /* channel attention */ 26 #define CY_RESET(addr) movob((addr)+1, 0xff) /* software controller reset */ 27 28 #define CBCW_IE 0x11 /* interrupt on cmd completion */ 29 #define CBCW_CLRINT 0x09 /* clear active interrupt */ 30 31 /* 32 * Tape parameter block definitions 33 */ 34 struct cytpb { 35 long tpcmd; /* command, see below */ 36 short tpcontrol; /* control word */ 37 short tpcount; /* return count */ 38 short tpsize; /* buffer size */ 39 short tprec; /* records/overrun */ 40 short tpdata[2]; /* pointer to source/dest */ 41 short tpstatus; /* status */ 42 short tplink[2]; /* pointer to next parameter block */ 43 }; 44 45 /* control field bit definitions */ 46 #define CYCW_UNIT (0x000c<<8) /* unit select mask, 2 bit field */ 47 #define CYCW_IE (0x0020<<8) /* interrupt enable */ 48 #define CYCW_LOCK (0x0080<<8) /* bus lock flag */ 49 #define CYCW_REV (0x0400>>8) /* reverse flag */ 50 #define CYCW_SPEED (0x0800>>8) /* speed/density */ 51 #define CYCW_25IPS 0 52 #define CYCW_100IPS (0x0800>>8) 53 #define CYCW_WIDTH (0x8000>>8) /* width */ 54 #define CYCW_8BITS 0 55 #define CYCW_16BITS (0x8000>>8) 56 57 #define CYCW_BITS "\20\3REV\005100IPS\00716BITS\16IE\20LOCK" 58 59 /* 60 * Controller commands 61 */ 62 63 /* control status/commands */ 64 #define CY_CONFIG (0x00<<24) /* configure */ 65 #define CY_NOP (0x20<<24) /* no operation */ 66 #define CY_SENSE (0x28<<24) /* drive status */ 67 #define CY_CLRINT (0x9c<<24) /* clear Multibus interrupt */ 68 69 /* tape position commands */ 70 #define CY_REW (0x34<<24) /* rewind tape */ 71 #define CY_OFFL (0x38<<24) /* off_line and unload */ 72 #define CY_WEOF (0x40<<24) /* write end-of-file mark */ 73 #define CY_SFORW (0x70<<24) /* space record forward */ 74 #define CY_SREV (CY_SFORW|CYCW_REV)/* space record backwords */ 75 #define CY_ERASE (0x4c<<24) /* erase record */ 76 77 /* data transfer commands */ 78 #define CY_BRCOM (0x10<<24) /* read buffered */ 79 #define CY_BWCOM (0x14<<24) /* write buffered */ 80 #define CY_RCOM (0x2c<<24) /* read tape unbuffered */ 81 #define CY_WCOM (0x30<<24) /* write tape unbuffered */ 82 83 /* status field bit definitions */ 84 #define CYS_WP (0x0002<<8) /* write protected, no write ring */ 85 #define CYS_BSY (0x0004<<8) /* formatter busy */ 86 #define CYS_RDY (0x0008<<8) /* drive ready */ 87 #define CYS_EOT (0x0010<<8) /* end of tape detected */ 88 #define CYS_BOT (0x0020<<8) /* tape is at load point */ 89 #define CYS_OL (0x0040<<8) /* drive on_line */ 90 #define CYS_FM (0x0080<<8) /* filemark detected */ 91 #define CYS_ERR (0x1f00>>8) /* error value mask */ 92 #define CYS_CR (0x2000>>8) /* controller executed retries */ 93 #define CYS_CC (0x4000>>8) /* command completed successfully */ 94 #define CYS_CE (0x8000>>8) /* command execution has begun */ 95 96 #define CYS_BITS "\20\6CR\7CC\10CE\12WP\13BSY\14RDY\15EOT/BOT\16BOT\17OL\20FM" 97 98 /* error codes for CYS_ERR */ 99 #define CYER_TIMOUT 0x01 /* timed out data busy false */ 100 #define CYER_TIMOUT1 0x02 /* data busy false,formatter,ready */ 101 #define CYER_TIMOUT2 0x03 /* time out ready busy false */ 102 #define CYER_TIMOUT3 0x04 /* time out ready busy true */ 103 #define CYER_TIMOUT4 0x05 /* time out data busy true */ 104 #define CYER_NXM 0x06 /* time out memory */ 105 #define CYER_BLANK 0x07 /* blank tape */ 106 #define CYER_DIAG 0x08 /* micro-diagnostic */ 107 #define CYER_EOT 0x09 /* EOT forward, BOT rev. */ 108 #define CYER_BOT 0x09 /* EOT forward, BOT rev. */ 109 #define CYER_HERR 0x0a /* retry unsuccessful */ 110 #define CYER_FIFO 0x0b /* FIFO over/under flow */ 111 #define CYER_PARITY 0x0d /* drive to tapemaster parity error */ 112 #define CYER_CKSUM 0x0e /* prom checksum */ 113 #define CYER_STROBE 0x0f /* time out tape strobe */ 114 #define CYER_NOTRDY 0x10 /* tape not ready */ 115 #define CYER_PROT 0x11 /* write, no enable ring */ 116 #define CYER_JUMPER 0x13 /* missing diagnostic jumper */ 117 #define CYER_LINK 0x14 /* bad link, link inappropriate */ 118 #define CYER_FM 0x15 /* unexpected filemark */ 119 #define CYER_PARAM 0x16 /* bad parameter, byte count ? */ 120 #define CYER_HDWERR 0x18 /* unidentified hardware error */ 121 #define CYER_NOSTRM 0x19 /* streaming terminated */ 122 123 #ifdef CYERROR 124 char *cyerror[] = { 125 "timeout", 126 "timeout1", 127 "timeout2", 128 "timeout3", 129 "timeout4", 130 "non-existant memory", 131 "blank tape", 132 "micro-diagnostic", 133 "eot/bot detected", 134 "retry unsuccessful", 135 "fifo over/under-flow", 136 "#12", 137 "drive to controller parity error", 138 "prom checksum", 139 "time out tape strobe (record length error)", 140 "tape not ready", 141 "write protected", 142 "#18", 143 "missing diagnostic jumper", 144 "invalid link pointer", 145 "unexpected file mark", 146 "invalid byte count", 147 "unidentified hardware error", 148 "streaming terminated" 149 }; 150 #define NCYERROR (sizeof (cyerror) / sizeof (cyerror[0])) 151 #endif 152 153 /* 154 * Masks defining hard and soft errors (must check against 1<<CYER_code). 155 */ 156 #define CYMASK(e) (1<<(CYER_/**/e)) 157 #define CYER_HARD (CYMASK(TIMOUT)|CYMASK(TIMOUT1)|CYMASK(TIMOUT2)|\ 158 CYMASK(TIMOUT3)|CYMASK(TIMOUT4)|CYMASK(NXM)|CYMASK(DIAG)|CYMASK(JUMPER)|\ 159 CYMASK(STROBE)|CYMASK(PROT)|CYMASK(CKSUM)|CYMASK(HERR)|CYMASK(BLANK)) 160 #define CYER_SOFT (CYMASK(FIFO)|CYMASK(NOTRDY)|CYMASK(PARITY)) 161 162 /* 163 * System configuration block 164 */ 165 struct cyscb { 166 char csb_fixed; /* fixed value code (must be 3) */ 167 char csb_unused; /* unused */ 168 short csb_ccb[2]; /* pointer to channel control block */ 169 }; 170 171 /* 172 * System configuration pointer 173 */ 174 struct cyscp { 175 char csp_buswidth; /* system bus width */ 176 #define CSP_16BITS 1 /* 16-bit system bus */ 177 #define CSP_8BITS 0 /* 8-bit system bus */ 178 char csp_unused; 179 short csp_scb[2]; /* point to system config block */ 180 }; 181