4.4BSD/usr/src/sys/tahoe/vba/cyreg.h
/*
* 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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)cyreg.h 7.8 (Berkeley) 6/28/90
*/
/*
* 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<<CYER_code).
*/
#define CYMASK(e) (1 << (e))
#define CYER_HARD (CYMASK(CYER_TIMOUT)|CYMASK(CYER_TIMOUT1)|\
CYMASK(CYER_TIMOUT2)|CYMASK(CYER_TIMOUT3)|CYMASK(CYER_TIMOUT4)|\
CYMASK(CYER_NXM)|CYMASK(CYER_DIAG)|CYMASK(CYER_JUMPER)|\
CYMASK(CYER_STROBE)|CYMASK(CYER_PROT)|CYMASK(CYER_CKSUM)|\
CYMASK(CYER_HERR)|CYMASK(CYER_BLANK))
#define CYER_RSOFT (CYMASK(CYER_FIFO)|CYMASK(CYER_NOTRDY)|\
CYMASK(CYER_PARITY))
#define CYER_WSOFT (CYMASK(CYER_HERR)|CYMASK(CYER_FIFO)|\
CYMASK(CYER_NOTRDY)|CYMASK(CYER_PARITY))