/* * Copyright (c) 1988 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Computer Consoles Inc. * * %sccs.include.redist.c% * * @(#)cyreg.h 7.8 (Berkeley) 06/28/90 */ /* * Tapemaster controller definitions. */ /* * With 20-bit addressing, the intermediate buffer * must be allocated early in startup(). */ #define CYMAXIO (64*1024) /* max i/o size + 1 */ char *cybuf; /* for byte swapping Multibus values */ #define htoms(x) (u_short)((((x)>>8)&0xff) | (((x)<<8)&0xff00)) #define b_repcnt b_bcount #define b_command b_resid /* * System configuration pointer. * Memory address is jumpered on controller. */ struct cyscp { char csp_buswidth; /* system bus width */ #define CSP_16BITS 1 /* 16-bit system bus */ #define CSP_8BITS 0 /* 8-bit system bus */ char csp_unused; u_char csp_scb[4]; /* point to system config block */ }; /* * System configuration block */ struct cyscb { char csb_fixed; /* fixed value code (must be 3) */ char csb_unused; /* unused */ u_char csb_ccb[4]; /* pointer to channel control block */ }; #define CSB_FIXED 0x3 /* * Channel control block definitions */ struct cyccb { char cbcw; /* channel control word */ char cbgate; /* tpb access gate */ u_char cbtpb[4]; /* first tape parameter block */ }; #define GATE_OPEN (char)(0x00) #define GATE_CLOSED (char)(0xff) #define CY_GO(addr) movob((addr), 0xff) /* channel attention */ #define CY_RESET(addr) movob((addr)+1, 0xff) /* software controller reset */ #define CBCW_IE 0x11 /* interrupt on cmd completion */ #define CBCW_CLRINT 0x09 /* clear active interrupt */ /* * Tape parameter block definitions */ struct cytpb { u_long tpcmd; /* command, see below */ u_short tpcontrol; /* control word */ u_short tpcount; /* return count */ u_short tpsize; /* buffer size */ u_short tprec; /* records/overrun */ u_char tpdata[4]; /* pointer to source/dest */ u_short tpstatus; /* status */ u_char tplink[4]; /* pointer to next parameter block */ }; /* control field bit definitions */ #define CYCW_UNIT (0x000c<<8) /* unit select mask, 2 bit field */ #define CYCW_IE (0x0020<<8) /* interrupt enable */ #define CYCW_LOCK (0x0080<<8) /* bus lock flag */ #define CYCW_REV (0x0400>>8) /* reverse flag */ #define CYCW_SPEED (0x0800>>8) /* speed/density */ #define CYCW_25IPS 0 #define CYCW_100IPS (0x0800>>8) #define CYCW_WIDTH (0x8000>>8) /* width */ #define CYCW_8BITS 0 #define CYCW_16BITS (0x8000>>8) #define CYCW_BITS "\20\3REV\005100IPS\00716BITS\16IE\20LOCK" /* * Controller commands */ /* control status/commands */ #define CY_CONFIG (0x00<<24) /* configure */ #define CY_NOP (0x20<<24) /* no operation */ #define CY_SETPAGE (0x08<<24) /* set page (addr bits 20-23) */ #define CY_SENSE (0x28<<24) /* drive status */ #define CY_CLRINT (0x9c<<24) /* clear Multibus interrupt */ /* tape position commands */ #define CY_REW (0x34<<24) /* rewind tape */ #define CY_OFFL (0x38<<24) /* off_line and unload */ #define CY_WEOF (0x40<<24) /* write end-of-file mark */ #define CY_SFORW (0x70<<24) /* space record forward */ #define CY_SREV (CY_SFORW|CYCW_REV) /* space record backwards */ #define CY_FSF (0x44<<24) /* space file forward */ #define CY_BSF (CY_FSF|CYCW_REV) /* space file backwards */ #define CY_ERASE (0x4c<<24) /* erase record */ /* data transfer commands */ #define CY_BRCOM (0x10<<24) /* read buffered */ #define CY_BWCOM (0x14<<24) /* write buffered */ #define CY_RCOM (0x2c<<24) /* read tape unbuffered */ #define CY_WCOM (0x30<<24) /* write tape unbuffered */ /* status field bit definitions */ #define CYS_WP (0x0002<<8) /* write protected, no write ring */ #define CYS_BSY (0x0004<<8) /* formatter busy */ #define CYS_RDY (0x0008<<8) /* drive ready */ #define CYS_EOT (0x0010<<8) /* end of tape detected */ #define CYS_BOT (0x0020<<8) /* tape is at load point */ #define CYS_OL (0x0040<<8) /* drive on_line */ #define CYS_FM (0x0080<<8) /* filemark detected */ #define CYS_ERR (0x1f00>>8) /* error value mask */ #define CYS_CR (0x2000>>8) /* controller executed retries */ #define CYS_CC (0x4000>>8) /* command completed successfully */ #define CYS_CE (0x8000>>8) /* command execution has begun */ #define CYS_BITS "\20\6CR\7CC\10CE\12WP\13BSY\14RDY\15EOT/BOT\16BOT\17OL\20FM" /* error codes for CYS_ERR */ #define CYER_TIMOUT 0x01 /* timed out data busy false */ #define CYER_TIMOUT1 0x02 /* data busy false,formatter,ready */ #define CYER_TIMOUT2 0x03 /* time out ready busy false */ #define CYER_TIMOUT3 0x04 /* time out ready busy true */ #define CYER_TIMOUT4 0x05 /* time out data busy true */ #define CYER_NXM 0x06 /* time out memory */ #define CYER_BLANK 0x07 /* blank tape */ #define CYER_DIAG 0x08 /* micro-diagnostic */ #define CYER_EOT 0x09 /* EOT forward, BOT rev. */ #define CYER_BOT 0x09 /* EOT forward, BOT rev. */ #define CYER_HERR 0x0a /* retry unsuccessful */ #define CYER_FIFO 0x0b /* FIFO over/under flow */ #define CYER_PARITY 0x0d /* drive to tapemaster parity error */ #define CYER_CKSUM 0x0e /* prom checksum */ #define CYER_STROBE 0x0f /* time out tape strobe */ #define CYER_NOTRDY 0x10 /* tape not ready */ #define CYER_PROT 0x11 /* write, no enable ring */ #define CYER_JUMPER 0x13 /* missing diagnostic jumper */ #define CYER_LINK 0x14 /* bad link, link inappropriate */ #define CYER_FM 0x15 /* unexpected filemark */ #define CYER_PARAM 0x16 /* bad parameter, byte count ? */ #define CYER_HDWERR 0x18 /* unidentified hardware error */ #define CYER_NOSTRM 0x19 /* streaming terminated */ #ifdef CYERROR char *cyerror[] = { "no error", "timeout", "timeout1", "timeout2", "timeout3", "timeout4", "non-existent memory", "blank tape", "micro-diagnostic", "eot/bot detected", "retry unsuccessful", "fifo over/under-flow", "#0xc", "drive to controller parity error", "prom checksum", "time out tape strobe (record length error)", "tape not ready", "write protected", "#0x12", "missing diagnostic jumper", "invalid link pointer", "unexpected file mark", "invalid byte count/parameter", "#0x17", "unidentified hardware error", "streaming terminated" }; #define NCYERROR (sizeof (cyerror) / sizeof (cyerror[0])) #endif /* * Masks defining hard and soft errors (must check against 1<