199 lines
7.1 KiB
C
199 lines
7.1 KiB
C
/* $Header: /sys/linux-0.97/include/linux/RCS/tpqic02.h,v 0.3 1992/08/09 23:26:24 root Exp root $
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*
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* Include file for QIC-02 driver for Linux.
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*
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* Copyright (c) 1992 by H. H. Bergman. All rights reserved.
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*/
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#ifndef _LINUX_TPQIC02_H
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#define _LINUX_TPQIC02_H
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#ifndef _CONFIG_H /* shouldn't this be _LINUX_CONFIG_H ? */
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#include <linux/config.h>
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#endif
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#ifdef CONFIG_TAPE_QIC02
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/* NOTE: TP_HAVE_DENS should distinguish between available densities
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* NOTE: Drive select is not implemented -- I have only one tape streamer.
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*/
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#if defined(TAPE_QIC02_WANGTEK5150)
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#define TAPE_QIC02_MT_TYPE MT_ISWT5150
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#define TP_HAVE_DENS
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#define TP_HAVE_BSF /* nope */
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#define TP_HAVE_FSR /* nope */
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#define TP_HAVE_BSR /* nope */
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#define TP_HAVE_EOD /* most of the time */
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#define TP_HAVE_RAS1
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#define TP_HAVE_RAS2
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#elif defined(TAPE_QIC02_ALL_FEATURES)
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#define TP_HAVE_DENS /* can do set density */
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#define TP_HAVE_BSF /* can search filemark backwards */
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#define TP_HAVE_FSR /* can skip one block forwards */
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#define TP_HAVE_BSR /* can skip one block backwards */
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#define TP_HAVE_EOD /* can seek to end of recorded data */
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#define TP_HAVE_RAS1 /* can run selftest 1 */
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#define TP_HAVE_RAS2 /* can run selftest 2 */
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/* These last two selftests shouldn't be used yet! */
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#else
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#error No QIC-02 tape drive type defined!
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/* If your drive is not listed above, first try the 'ALL_FEATURES',
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* to see what commands are supported, then create your own entry in
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* the list above. You may want to mail it to me, so that I can include
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* it in the next release.
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*/
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#endif
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/* streamer tape block size (fixed) */
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#define TAPE_BLKSIZE 512
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#define NR_BLK_BUF 20 /* max 128 blocks */
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#define TPQBUF_SIZE (TAPE_BLKSIZE*NR_BLK_BUF)
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/* port locations */
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#define QIC_STAT_PORT TAPE_QIC02_PORT
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#define QIC_CTL_PORT TAPE_QIC02_PORT
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#define QIC_CMD_PORT (TAPE_QIC02_PORT+1)
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#define QIC_DATA_PORT (TAPE_QIC02_PORT+1)
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/* status register bits (Active LOW!) */
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#define WTS_READY 0x01
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#define WTS_EXCEPTION 0x02
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#define WTS_STAT (WTS_READY|WTS_EXCEPTION)
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#define WTS_RESETMASK 0x07
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#define WTS_RESETVAL (WTS_RESETMASK & ~WTS_EXCEPTION)
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/* controller register (QIC_CTL_PORT) bits */
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#define WTC_ONLINE 0x01
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#define WTC_RESET 0x02
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#define WTC_REQUEST 0x04
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#define WTC_CMDOFF 0xC0
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#if TAPE_QIC02_DMA == 3 /* I don't get this -- can somebody explain this one to me? */
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#define WTC_DMA 0x10 /* enable dma chan3 */
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#elif TAPE_QIC02_DMA == 1
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#define WTC_DMA 0x08 /* enable dma chan1 or chan2 */
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#else
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#error "unsupported or incorrect DMA configuration"
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#endif
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/* Standard QIC-02 commands -- rev F. All QIC-02 drives must support these */
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#define QCMD_SEL_1 0x01 /* select drive 1 */
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#define QCMD_SEL_2 0x02 /* select drive 2 */
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#define QCMD_SEL_3 0x04 /* select drive 3 */
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#define QCMD_SEL_4 0x08 /* select drive 4 */
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#define QCMD_REWIND 0x21 /* rewind tape*/
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#define QCMD_ERASE 0x22 /* erase tape */
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#define QCMD_RETEN 0x24 /* retension tape */
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#define QCMD_WRT_DATA 0x40 /* write data */
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#define QCMD_WRT_FM 0x60 /* write file mark */
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#define QCMD_RD_DATA 0x80 /* read data */
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#define QCMD_RD_FM 0xA0 /* read file mark (forward direction) */
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#define QCMD_RD_STAT 0xC0 /* read status */
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/* Other (optional/vendor unique) commands */
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/* Density commands are only valid when TP_BOM is set! */
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#define QCMD_DENS_11 0x26 /* QIC-11 */
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#define QCMD_DENS_24 0x27 /* QIC-24: 9 track 60MB */
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#define QCMD_DENS_120 0x28 /* QIC-120: 15 track 120MB */
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#define QCMD_DENS_150 0x29 /* QIC-150: 18 track 150MB */
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#define QCMD_DENS_300 0x2A /* QIC-300/QIC-2100 */
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#define QCMD_DENS_600 0x2B /* QIC-600/QIC-2200 */
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/* don't know about QIC-1000 and QIC-1350 */
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#define QCMD_WRTNU_DATA 0x40 /* write data, no underruns, insert filler. */
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#define QCMD_SPACE_FWD 0x81 /* skip next block */
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#define QCMD_SPACE_BCK 0x89 /* move tape head one block back -- very useful! */
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#define QCMD_RD_FM_BCK 0xA8 /* read filemark (backwards) */
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#define QCMD_SEEK_EOD 0xA3 /* skip to EOD */
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#define QCMD_RD_STAT_X1 0xC1 /* read extended status 1 */
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#define QCMD_RD_STAT_X2 0xC4 /* read extended status 2 */
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#define QCMD_RD_STAT_X3 0xE0 /* read extended status 3 */
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#define QCMD_SELF_TST1 0xC2 /* run self test 1 (nondestructive) */
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#define QCMD_SELF_TST2 0xCA /* run self test 2 (destructive) */
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/* Minor device codes for tapes:
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* |7|6|5|4|3|2|1|0|
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* | \ | / \ | / |_____ 1=rewind on close, 0=no rewind on close
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* | \|/ |_________ Density: 000=none, 001=QIC-11, 010=24, 011=120,
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* | | 100=QIC-150, 101..111 reserved.
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* | |_______________ Reserved for unit numbers.
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* |___________________ Reserved for diagnostics during debugging.
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*/
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#define TP_REWCLOSE(d) ((MINOR(d)&0x01) == 1) /* rewind bit */
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/* rewind is only done if data has been transfered */
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#define TP_DENS(dev) ((MINOR(dev) >> 1) & 0x07) /* tape density */
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#define TP_UNIT(dev) ((MINOR(dev) >> 4) & 0x07) /* unit number */
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#define TP_DIAGS(dev) (MINOR(dev) & 0x80) /* print excessive diagnostics */
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#ifndef __DEFONLY__
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/* status codes returned by a WTS_RDSTAT call */
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struct tpstatus { /* sizeof(short)==2), LSB first */
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unsigned short exs; /* Drive exception flags */
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unsigned short dec; /* data error count: nr of blocks rewritten */
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unsigned short urc; /* underrun count: nr of times streaming was interrupted */
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};
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#define TPSTATSIZE sizeof(struct tpstatus)
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#endif /* __DEFONLY__ */
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/* defines for tpstatus.exs -- taken from 386BSD wt driver */
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#define TP_POR 0x100 /* Power on/reset occurred */
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#define TP_RES1 0x200 /* Reserved for end of media */
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#define TP_RES2 0x400 /* Reserved for bus parity */
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#define TP_BOM 0x800 /* Beginning of media */
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#define TP_MBD 0x1000 /* Marginal block detected */
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#define TP_NDT 0x2000 /* No data detected */
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#define TP_ILL 0x4000 /* Illegal command */
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#define TP_ST1 0x8000 /* Status byte 1 bits */
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#define TP_FIL 0x01 /* File mark detected */
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#define TP_BNL 0x02 /* Bad block not located */
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#define TP_UDA 0x04 /* Unrecoverable data error */
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#define TP_EOM 0x08 /* End of media */
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#define TP_WRP 0x10 /* Write protected cartridge */
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#define TP_USL 0x20 /* Unselected drive */
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#define TP_CNI 0x40 /* Cartridge not in place */
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#define TP_ST0 0x80 /* Status byte 0 bits */
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#define REPORT_ERR0 (TP_CNI|TP_USL|TP_WRP|TP_EOM|TP_UDA|TP_BNL|TP_FIL)
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#define REPORT_ERR1 (TP_ILL|TP_NDT|TP_MBD)
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#define TAPE_TIMEOUT 1000000
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/* internal function return codes */
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#define TE_OK 0 /* everything is fine */
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#define TE_EX 1 /* exception detected */
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#define TE_ERR 2 /* some error */
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#define TE_NS 3 /* can't read status */
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#define TE_TIM 4 /* timed out */
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#define TE_DEAD 5 /* tape drive doesn't respond */
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/* timeout timer values -- check these! */
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#define TIM_S (2*HZ) /* 2 seconds (normal cmds) */
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#define TIM_M (5*HZ) /* 5 seconds (write FM) */
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#define TIM_R (8*60*HZ) /* 8 minutes (retensioning) */
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#define TIM_F (2*3600*HZ) /* est. 1.2hr for full tape read/write+2 retens */
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#define TIMERON(t) timer_table[TAPE_QIC02_TIMER].expires = jiffies + (t); \
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timer_active |= (1<<TAPE_QIC02_TIMER)
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#define TIMEROFF timer_active &= ~(1<<TAPE_QIC02_TIMER)
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typedef char flag;
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#define YES 1 /* YES must be != 0 */
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#define NO 0
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extern long tape_qic02_init(long); /* for kernel/mem.c */
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#endif /* CONFIG_TAPE_QIC02 */
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#endif /* _LINUX_TPQIC02_H */
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