-/* tm.c 4.20 %G% */
+/* tm.c 4.48 82/05/27 */
#include "te.h"
-#if NTM > 0
-int tmgapsdcnt; /* DEBUG */
+#include "ts.h"
+#if NTE > 0
/*
* TM11/TE10 tape driver
*
- * THIS DRIVER HAS NOT BEEN TESTED WITH MORE THAN ONE TRANSPORT.
+ * TODO:
+ * test driver with more than one slave
+ * test driver with more than one controller
+ * test reset code
+ * what happens if you offline tape during rewind?
+ * test using file system on tape
*/
-#define DELAY(N) { register int d = N; while (--d > 0); }
#include "../h/param.h"
+#include "../h/systm.h"
#include "../h/buf.h"
#include "../h/dir.h"
#include "../h/conf.h"
#include "../h/map.h"
#include "../h/pte.h"
#include "../h/vm.h"
-#include "../h/uba.h"
+#include "../h/ubareg.h"
+#include "../h/ubavar.h"
#include "../h/mtio.h"
#include "../h/ioctl.h"
#include "../h/cmap.h"
#include "../h/tmreg.h"
-struct buf ctmbuf[NTE];
-struct buf rtmbuf[NTE];
+/*
+ * There is a ctmbuf per tape controller.
+ * It is used as the token to pass to the internal routines
+ * to execute tape ioctls, and also acts as a lock on the slaves
+ * on the controller, since there is only one per controller.
+ * In particular, when the tape is rewinding on close we release
+ * the user process but any further attempts to use the tape drive
+ * before the rewind completes will hang waiting for ctmbuf.
+ */
+struct buf ctmbuf[NTM];
+/*
+ * Raw tape operations use rtmbuf. The driver
+ * notices when rtmbuf is being used and allows the user
+ * program to continue after errors and read records
+ * not of the standard length (BSIZE).
+ */
+struct buf rtmbuf[NTM];
+
+/*
+ * Driver unibus interface routines and variables.
+ */
int tmprobe(), tmslave(), tmattach(), tmdgo(), tmintr();
-struct uba_minfo *tmminfo[NTM];
-struct uba_dinfo *tmdinfo[NTE];
-struct buf tmutab[NTE];
-#ifdef notyet
-struct uba_dinfo *tmip[NTM][4];
-#endif
+struct uba_ctlr *tmminfo[NTM];
+struct uba_device *tedinfo[NTE];
+struct buf teutab[NTE];
+short tetotm[NTE];
u_short tmstd[] = { 0772520, 0 };
struct uba_driver tmdriver =
- { tmprobe, tmslave, tmattach, tmdgo, tmstd, "te", tmdinfo, "tm", tmminfo, 0 };
+ { tmprobe, tmslave, tmattach, tmdgo, tmstd, "te", tedinfo, "tm", tmminfo, 0 };
/* bits in minor device */
-#define TMUNIT(dev) (minor(dev)&03)
+#define TEUNIT(dev) (minor(dev)&03)
+#define TMUNIT(dev) (tetotm[TEUNIT(dev)])
#define T_NOREWIND 04
#define T_1600BPI 08
/*
* Software state per tape transport.
+ *
+ * 1. A tape drive is a unique-open device; we refuse opens when it is already.
+ * 2. We keep track of the current position on a block tape and seek
+ * before operations by forward/back spacing if necessary.
+ * 3. We remember if the last operation was a write on a tape, so if a tape
+ * is open read write and the last thing done is a write we can
+ * write a standard end of tape mark (two eofs).
+ * 4. We remember the status registers after the last command, using
+ * then internally and returning them to the SENSE ioctl.
+ * 5. We remember the last density the tape was used at. If it is
+ * not a BOT when we start using it and we are writing, we don't
+ * let the density be changed.
*/
-struct tm_softc {
+struct te_softc {
char sc_openf; /* lock against multiple opens */
char sc_lastiow; /* last op was a write */
daddr_t sc_blkno; /* block number, for block device tape */
- daddr_t sc_nxrec; /* desired block position */
+ daddr_t sc_nxrec; /* position of end of tape, if known */
u_short sc_erreg; /* copy of last erreg */
u_short sc_dsreg; /* copy of last dsreg */
short sc_resid; /* copy of last bc */
+#ifdef unneeded
short sc_lastcmd; /* last command to handle direction changes */
-} tm_softc[NTM];
+#endif
+ u_short sc_dens; /* prototype command with density info */
+ daddr_t sc_timo; /* time until timeout expires */
+ short sc_tact; /* timeout is active */
+} te_softc[NTE];
+#ifdef unneeded
+int tmgapsdcnt; /* DEBUG */
+#endif
/*
- * States for um->um_tab.b_active, the
- * per controller state flag.
+ * States for um->um_tab.b_active, the per controller state flag.
+ * This is used to sequence control in the driver.
*/
#define SSEEK 1 /* seeking */
#define SIO 2 /* doing seq i/o */
#define SCOM 3 /* sending control command */
#define SREW 4 /* sending a drive rewind */
-/* WE CURRENTLY HANDLE REWINDS PRIMITIVELY, BUSYING OUT THE CONTROLLER */
-/* DURING THE REWIND... IF WE EVER GET TWO TRANSPORTS, WE CAN DEBUG MORE */
-/* SOPHISTICATED LOGIC... THIS SIMPLE CODE AT LEAST MAY WORK. */
-
/*
* Determine if there is a controller for
* a tm at address reg. Our goal is to make the
tmprobe(reg)
caddr_t reg;
{
- register int br, cvec;
+ register int br, cvec; /* must be r11,r10; value-result */
#ifdef lint
- br = 0; br = cvec; cvec = br;
+ br = 0; cvec = br; br = cvec;
+ tmintr(0);
#endif
- ((struct device *)reg)->tmcs = TM_IE;
+ ((struct tmdevice *)reg)->tmcs = TM_IE;
/*
* If this is a tm11, it ought to have interrupted
* by now, if it isn't (ie: it is a ts04) then we just
* a uba error for a ts; but our caller will notice that
* so we won't check for it.
*/
- if (badaddr(&((struct device *)reg)->tmrd, 2))
+ if (badaddr((caddr_t)&((struct tmdevice *)reg)->tmrd, 2))
return (0);
return (1);
}
*/
/*ARGSUSED*/
tmslave(ui, reg)
- struct uba_dinfo *ui;
+ struct uba_device *ui;
caddr_t reg;
{
}
/*
- * Record attachment of the unit to the controller port.
+ * Record attachment of the unit to the controller.
*/
/*ARGSUSED*/
tmattach(ui)
- struct uba_dinfo *ui;
+ struct uba_device *ui;
{
-
-#ifdef notyet
- tmip[ui->ui_ctlr][ui->ui_slave] = ui;
-#endif
+ /*
+ * Tetotm is used in TMUNIT to index the ctmbuf and rtmbuf
+ * arrays given a te unit number.
+ */
+ tetotm[ui->ui_unit] = ui->ui_mi->um_ctlr;
}
+int tmtimer();
/*
* Open the device. Tapes are unique open
* devices, so we refuse if it is already open.
* We also check that a tape is available, and
- * don't block waiting here.
+ * don't block waiting here; if you want to wait
+ * for a tape you should timeout in user code.
*/
tmopen(dev, flag)
dev_t dev;
int flag;
{
- register int unit;
- register struct uba_dinfo *ui;
- register struct tm_softc *sc;
-
- unit = TMUNIT(dev);
- if (unit>=NTE || (sc = &tm_softc[unit])->sc_openf ||
- (ui = tmdinfo[unit]) == 0 || ui->ui_alive == 0) {
+ register int teunit;
+ register struct uba_device *ui;
+ register struct te_softc *sc;
+ int olddens, dens;
+ int s;
+
+ teunit = TEUNIT(dev);
+ if (teunit>=NTE || (sc = &te_softc[teunit])->sc_openf ||
+ (ui = tedinfo[teunit]) == 0 || ui->ui_alive == 0) {
u.u_error = ENXIO;
return;
}
+ olddens = sc->sc_dens;
+ dens = TM_IE | TM_GO | (ui->ui_slave << 8);
+ if ((minor(dev) & T_1600BPI) == 0)
+ dens |= TM_D800;
+ sc->sc_dens = dens;
+get:
tmcommand(dev, TM_SENSE, 1);
- if ((sc->sc_erreg&(TM_SELR|TM_TUR)) != (TM_SELR|TM_TUR)) {
- uprintf("tape not online\n");
+ if (sc->sc_erreg&TMER_SDWN) {
+ sleep((caddr_t)&lbolt, PZERO+1);
+ goto get;
+ }
+ sc->sc_dens = olddens;
+ if ((sc->sc_erreg&(TMER_SELR|TMER_TUR)) != (TMER_SELR|TMER_TUR)) {
+ uprintf("te%d: not online\n", teunit);
u.u_error = EIO;
return;
}
- if ((flag&(FREAD|FWRITE)) == FWRITE && sc->sc_erreg&TM_WRL) {
- uprintf("tape write protected\n");
+ if ((flag&FWRITE) && (sc->sc_erreg&TMER_WRL)) {
+ uprintf("te%d: no write ring\n", teunit);
+ u.u_error = EIO;
+ return;
+ }
+ if ((sc->sc_erreg&TMER_BOT) == 0 && (flag&FWRITE) &&
+ dens != sc->sc_dens) {
+ uprintf("te%d: can't change density in mid-tape\n", teunit);
u.u_error = EIO;
return;
}
sc->sc_blkno = (daddr_t)0;
sc->sc_nxrec = INF;
sc->sc_lastiow = 0;
- sc->sc_openf = 1;
- return;
+ sc->sc_dens = dens;
+ s = spl6();
+ if (sc->sc_tact == 0) {
+ sc->sc_timo = INF;
+ sc->sc_tact = 1;
+ timeout(tmtimer, (caddr_t)dev, 5*hz);
+ }
+ splx(s);
}
/*
register dev_t dev;
register flag;
{
- register struct tm_softc *sc = &tm_softc[TMUNIT(dev)];
+ register struct te_softc *sc = &te_softc[TEUNIT(dev)];
if (flag == FWRITE || (flag&FWRITE) && sc->sc_lastiow) {
tmcommand(dev, TM_WEOF, 1);
tmcommand(dev, TM_SREV, 1);
}
if ((minor(dev)&T_NOREWIND) == 0)
- tmcommand(dev, TM_REW, 1);
+ /*
+ * 0 count means don't hang waiting for rewind complete
+ * rather ctmbuf stays busy until the operation completes
+ * preventing further opens from completing by
+ * preventing a TM_SENSE from completing.
+ */
+ tmcommand(dev, TM_REW, 0);
sc->sc_openf = 0;
}
int com, count;
{
register struct buf *bp;
+ register int s;
bp = &ctmbuf[TMUNIT(dev)];
- (void) spl5();
+ s = spl5();
while (bp->b_flags&B_BUSY) {
+ /*
+ * This special check is because B_BUSY never
+ * gets cleared in the non-waiting rewind case.
+ */
+ if (bp->b_repcnt == 0 && (bp->b_flags&B_DONE))
+ break;
bp->b_flags |= B_WANTED;
sleep((caddr_t)bp, PRIBIO);
}
bp->b_flags = B_BUSY|B_READ;
- (void) spl0();
+ splx(s);
bp->b_dev = dev;
bp->b_repcnt = -count;
bp->b_command = com;
bp->b_blkno = 0;
tmstrategy(bp);
+ /*
+ * In case of rewind from close, don't wait.
+ * This is the only case where count can be 0.
+ */
+ if (count == 0)
+ return;
iowait(bp);
if (bp->b_flags&B_WANTED)
wakeup((caddr_t)bp);
}
/*
- * Decipher a tape operation and do what is needed
- * to see that it happens.
+ * Queue a tape operation.
*/
tmstrategy(bp)
register struct buf *bp;
{
- int unit = TMUNIT(bp->b_dev);
- register struct uba_minfo *um;
+ int teunit = TEUNIT(bp->b_dev);
+ register struct uba_ctlr *um;
register struct buf *dp;
- register struct tm_softc *sc = &tm_softc[unit];
+ int s;
/*
* Put transfer at end of unit queue
*/
- dp = &tmutab[unit];
+ dp = &teutab[teunit];
bp->av_forw = NULL;
- (void) spl5();
+ s = spl5();
+ um = tedinfo[teunit]->ui_mi;
if (dp->b_actf == NULL) {
dp->b_actf = bp;
/*
* put at end of controller queue.
*/
dp->b_forw = NULL;
- um = tmdinfo[unit]->ui_mi;
if (um->um_tab.b_actf == NULL)
um->um_tab.b_actf = dp;
else
*/
if (um->um_tab.b_active == 0)
tmstart(um);
- (void) spl0();
+ splx(s);
}
/*
* Start activity on a tm controller.
*/
tmstart(um)
- register struct uba_minfo *um;
+ register struct uba_ctlr *um;
{
register struct buf *bp, *dp;
- register struct device *addr = (struct device *)um->um_addr;
- register struct tm_softc *sc;
- register struct uba_dinfo *ui;
- int unit, cmd;
+ register struct tmdevice *addr = (struct tmdevice *)um->um_addr;
+ register struct te_softc *sc;
+ register struct uba_device *ui;
+ int teunit, cmd;
daddr_t blkno;
/*
um->um_tab.b_actf = dp->b_forw;
goto loop;
}
- unit = TMUNIT(bp->b_dev);
- ui = tmdinfo[unit];
+ teunit = TEUNIT(bp->b_dev);
+ ui = tedinfo[teunit];
/*
* Record pre-transfer status (e.g. for TM_SENSE)
*/
- sc = &tm_softc[unit];
- addr = (struct device *)um->um_addr;
+ sc = &te_softc[teunit];
+ addr = (struct tmdevice *)um->um_addr;
addr->tmcs = (ui->ui_slave << 8);
sc->sc_dsreg = addr->tmcs;
sc->sc_erreg = addr->tmer;
* Default is that last command was NOT a write command;
* if we do a write command we will notice this in tmintr().
*/
- sc->sc_lastiow = 1;
+ sc->sc_lastiow = 0;
if (sc->sc_openf < 0 || (addr->tmcs&TM_CUR) == 0) {
/*
- * Have had a hard error on this (non-raw) tape,
- * or the tape unit is now unavailable (e.g. taken off
- * line).
+ * Have had a hard error on a non-raw tape
+ * or the tape unit is now unavailable
+ * (e.g. taken off line).
*/
bp->b_flags |= B_ERROR;
goto next;
}
- /*
- * If operation is not a control operation,
- * check for boundary conditions.
- */
- if (bp != &ctmbuf[unit]) {
- if (dbtofsb(bp->b_blkno) > sc->sc_nxrec) {
- bp->b_flags |= B_ERROR;
- bp->b_error = ENXIO; /* past EOF */
- goto next;
- }
- if (dbtofsb(bp->b_blkno) == sc->sc_nxrec &&
- bp->b_flags&B_READ) {
- bp->b_resid = bp->b_bcount;
- clrbuf(bp); /* at EOF */
- goto next;
- }
- if ((bp->b_flags&B_READ) == 0)
- /* write sets EOF */
- sc->sc_nxrec = dbtofsb(bp->b_blkno) + 1;
- }
- /*
- * Set up the command, and then if this is a mt ioctl,
- * do the operation using, for TM_SFORW and TM_SREV, the specified
- * operation count.
- */
- cmd = TM_IE | TM_GO | (ui->ui_slave << 8);
- if ((minor(bp->b_dev) & T_1600BPI) == 0)
- cmd |= TM_D800;
- if (bp == &ctmbuf[unit]) {
+ if (bp == &ctmbuf[TMUNIT(bp->b_dev)]) {
+ /*
+ * Execute control operation with the specified count.
+ */
if (bp->b_command == TM_SENSE)
goto next;
- um->um_tab.b_active =
- bp->b_command == TM_REW ? SREW : SCOM;
+ /*
+ * Set next state; give 5 minutes to complete
+ * rewind, or 10 seconds per iteration (minimum 60
+ * seconds and max 5 minutes) to complete other ops.
+ */
+ if (bp->b_command == TM_REW) {
+ um->um_tab.b_active = SREW;
+ sc->sc_timo = 5 * 60;
+ } else {
+ um->um_tab.b_active = SCOM;
+ sc->sc_timo =
+ imin(imax(10*(int)-bp->b_repcnt,60),5*60);
+ }
if (bp->b_command == TM_SFORW || bp->b_command == TM_SREV)
addr->tmbc = bp->b_repcnt;
goto dobpcmd;
}
+ /*
+ * The following checks handle boundary cases for operation
+ * on non-raw tapes. On raw tapes the initialization of
+ * sc->sc_nxrec by tmphys causes them to be skipped normally
+ * (except in the case of retries).
+ */
+ if (dbtofsb(bp->b_blkno) > sc->sc_nxrec) {
+ /*
+ * Can't read past known end-of-file.
+ */
+ bp->b_flags |= B_ERROR;
+ bp->b_error = ENXIO;
+ goto next;
+ }
+ if (dbtofsb(bp->b_blkno) == sc->sc_nxrec &&
+ bp->b_flags&B_READ) {
+ /*
+ * Reading at end of file returns 0 bytes.
+ */
+ bp->b_resid = bp->b_bcount;
+ clrbuf(bp);
+ goto next;
+ }
+ if ((bp->b_flags&B_READ) == 0)
+ /*
+ * Writing sets EOF
+ */
+ sc->sc_nxrec = dbtofsb(bp->b_blkno) + 1;
/*
* If the data transfer command is in the correct place,
* set up all the registers except the csr, and give
addr->tmbc = -bp->b_bcount;
if ((bp->b_flags&B_READ) == 0) {
if (um->um_tab.b_errcnt)
- cmd |= TM_WIRG;
+ cmd = TM_WIRG;
else
- cmd |= TM_WCOM;
+ cmd = TM_WCOM;
} else
- cmd |= TM_RCOM;
+ cmd = TM_RCOM;
um->um_tab.b_active = SIO;
- um->um_cmd = cmd;
-/*
+ um->um_cmd = sc->sc_dens|cmd;
+#ifdef notdef
if (tmreverseop(sc->sc_lastcmd))
- while (addr->tmer & TM_SDWN)
+ while (addr->tmer & TMER_SDWN)
tmgapsdcnt++;
-*/
sc->sc_lastcmd = TM_RCOM; /* will serve */
- ubago(ui);
+#endif
+ sc->sc_timo = 60; /* premature, but should serve */
+ (void) ubago(ui);
return;
}
/*
- * Block tape positioned incorrectly;
- * seek forwards or backwards to the correct spot.
+ * Tape positioned incorrectly;
+ * set to seek forwards or backwards to the correct spot.
+ * This happens for raw tapes only on error retries.
*/
um->um_tab.b_active = SSEEK;
if (blkno < dbtofsb(bp->b_blkno)) {
bp->b_command = TM_SREV;
addr->tmbc = dbtofsb(bp->b_blkno) - blkno;
}
+ sc->sc_timo = imin(imax(10 * -addr->tmbc, 60), 5 * 60);
dobpcmd:
-/*
+#ifdef notdef
+ /*
+ * It is strictly necessary to wait for the tape
+ * to stop before changing directions, but the TC11
+ * handles this for us.
+ */
if (tmreverseop(sc->sc_lastcmd) != tmreverseop(bp->b_command))
while (addr->tmer & TM_SDWN)
tmgapsdcnt++;
-*/
sc->sc_lastcmd = bp->b_command;
- addr->tmcs = (cmd | bp->b_command);
+#endif
+ /*
+ * Do the command in bp.
+ */
+ addr->tmcs = (sc->sc_dens | bp->b_command);
return;
next:
* allocated to us; start the device.
*/
tmdgo(um)
- register struct uba_minfo *um;
+ register struct uba_ctlr *um;
{
- register struct device *addr = (struct device *)um->um_addr;
+ register struct tmdevice *addr = (struct tmdevice *)um->um_addr;
addr->tmba = um->um_ubinfo;
addr->tmcs = um->um_cmd | ((um->um_ubinfo >> 12) & 0x30);
{
struct buf *dp;
register struct buf *bp;
- register struct uba_minfo *um = tmminfo[tm11];
- register struct device *addr = (struct device *)tmdinfo[tm11]->ui_addr;
- register struct tm_softc *sc;
- int unit;
+ register struct uba_ctlr *um = tmminfo[tm11];
+ register struct tmdevice *addr;
+ register struct te_softc *sc;
+ int teunit;
register state;
+ if ((dp = um->um_tab.b_actf) == NULL)
+ return;
+ bp = dp->b_actf;
+ teunit = TEUNIT(bp->b_dev);
+ addr = (struct tmdevice *)tedinfo[teunit]->ui_addr;
+ sc = &te_softc[teunit];
/*
* If last command was a rewind, and tape is still
* rewinding, wait for the rewind complete interrupt.
*/
if (um->um_tab.b_active == SREW) {
um->um_tab.b_active = SCOM;
- if (addr->tmer&TM_RWS)
+ if (addr->tmer&TMER_RWS) {
+ sc->sc_timo = 5*60; /* 5 minutes */
return;
+ }
}
/*
* An operation completed... record status
*/
- if ((dp = um->um_tab.b_actf) == NULL)
- return;
- bp = dp->b_actf;
- unit = TMUNIT(bp->b_dev);
- sc = &tm_softc[unit];
+ sc->sc_timo = INF;
sc->sc_dsreg = addr->tmcs;
sc->sc_erreg = addr->tmer;
sc->sc_resid = addr->tmbc;
* Check for errors.
*/
if (addr->tmcs&TM_ERR) {
- while (addr->tmer & TM_SDWN)
+ while (addr->tmer & TMER_SDWN)
; /* await settle down */
/*
- * If we hit the end of the tape update our position.
+ * If we hit the end of the tape file, update our position.
*/
- if (addr->tmer&TM_EOF) {
+ if (addr->tmer&TMER_EOF) {
tmseteof(bp); /* set blkno and nxrec */
state = SCOM; /* force completion */
/*
goto opdone;
}
/*
- * If we were reading and the only error was that the
- * record was to long, then we don't consider this an error.
+ * If we were reading raw tape and the only error was that the
+ * record was too long, then we don't consider this an error.
*/
- if ((bp->b_flags&B_READ) &&
- (addr->tmer&(TM_HARD|TM_SOFT)) == TM_RLE)
+ if (bp == &rtmbuf[TMUNIT(bp->b_dev)] && (bp->b_flags&B_READ) &&
+ (addr->tmer&(TMER_HARD|TMER_SOFT)) == TMER_RLE)
goto ignoreerr;
/*
* If error is not hard, and this was an i/o operation
* retry up to 8 times.
*/
- if ((addr->tmer&TM_HARD)==0 && state==SIO) {
+ if ((addr->tmer&TMER_HARD)==0 && state==SIO) {
if (++um->um_tab.b_errcnt < 7) {
-/* SHOULD CHECK THAT RECOVERY WORKS IN THIS CASE */
-/* AND THEN ONLY PRINT IF errcnt==7 */
- if((addr->tmer&TM_SOFT) == TM_NXM)
- printf("TM UBA late error\n");
sc->sc_blkno++;
ubadone(um);
goto opcont;
* Hard or non-i/o errors on non-raw tape
* cause it to close.
*/
- if (sc->sc_openf>0 && bp != &rtmbuf[unit])
+ if (sc->sc_openf>0 && bp != &rtmbuf[TMUNIT(bp->b_dev)])
sc->sc_openf = -1;
/*
* Couldn't recover error
*/
- harderr(bp);
- printf("tm%d er=%b\n", dkunit(bp),
- sc->sc_erreg, TMEREG_BITS);
+ printf("te%d: hard error bn%d er=%b\n", minor(bp->b_dev)&03,
+ bp->b_blkno, sc->sc_erreg, TMER_BITS);
bp->b_flags |= B_ERROR;
goto opdone;
}
case SCOM:
/*
- * Unless special operation, op completed.
- */
- if (bp != &ctmbuf[unit])
- goto opdone;
- /*
- * Operation on block device...
- * iterate operations which don't repeat
- * for themselves in the hardware; for forward/
- * backward space record update the current position.
+ * For forward/backward space record update current position.
*/
+ if (bp == &ctmbuf[TMUNIT(bp->b_dev)])
switch (bp->b_command) {
case TM_SFORW:
sc->sc_blkno -= bp->b_repcnt;
- goto opdone;
+ break;
case TM_SREV:
sc->sc_blkno += bp->b_repcnt;
- goto opdone;
-
- default:
- if (++bp->b_repcnt < 0)
- goto opcont;
- goto opdone;
+ break;
}
+ goto opdone;
case SSEEK:
sc->sc_blkno = dbtofsb(bp->b_blkno);
tmstart(um);
}
+tmtimer(dev)
+ int dev;
+{
+ register struct te_softc *sc = &te_softc[TEUNIT(dev)];
+ register short x;
+
+ if (sc->sc_timo != INF && (sc->sc_timo -= 5) < 0) {
+ printf("te%d: lost interrupt\n", TEUNIT(dev));
+ sc->sc_timo = INF;
+ x = spl5();
+ tmintr(TMUNIT(dev));
+ (void) splx(x);
+ }
+ timeout(tmtimer, (caddr_t)dev, 5*hz);
+}
+
tmseteof(bp)
register struct buf *bp;
{
- register int unit = TMUNIT(bp->b_dev);
- register struct device *addr =
- (struct device *)tmdinfo[unit]->ui_addr;
- register struct tm_softc *sc = &tm_softc[unit];
+ register int teunit = TEUNIT(bp->b_dev);
+ register struct tmdevice *addr =
+ (struct tmdevice *)tedinfo[teunit]->ui_addr;
+ register struct te_softc *sc = &te_softc[teunit];
- if (bp == &ctmbuf[unit]) {
+ if (bp == &ctmbuf[TMUNIT(bp->b_dev)]) {
if (sc->sc_blkno > dbtofsb(bp->b_blkno)) {
/* reversing */
sc->sc_nxrec = dbtofsb(bp->b_blkno) - addr->tmbc;
{
tmphys(dev);
+ if (u.u_error)
+ return;
physio(tmstrategy, &rtmbuf[TMUNIT(dev)], dev, B_READ, minphys);
}
{
tmphys(dev);
+ if (u.u_error)
+ return;
physio(tmstrategy, &rtmbuf[TMUNIT(dev)], dev, B_WRITE, minphys);
}
+/*
+ * Check that a raw device exists.
+ * If it does, set up sc_blkno and sc_nxrec
+ * so that the tape will appear positioned correctly.
+ */
tmphys(dev)
dev_t dev;
{
+ register int teunit = TEUNIT(dev);
register daddr_t a;
- register struct tm_softc *sc = &tm_softc[TMUNIT(dev)];
+ register struct te_softc *sc;
+ register struct uba_device *ui;
+ if (teunit >= NTE || (ui=tedinfo[teunit]) == 0 || ui->ui_alive == 0) {
+ u.u_error = ENXIO;
+ return;
+ }
+ sc = &te_softc[teunit];
a = dbtofsb(u.u_offset >> 9);
sc->sc_blkno = a;
sc->sc_nxrec = a + 1;
tmreset(uban)
int uban;
{
- int printed = 0;
- register struct uba_minfo *um;
- register tm11, unit;
- register struct uba_dinfo *ui;
+ register struct uba_ctlr *um;
+ register tm11, teunit;
+ register struct uba_device *ui;
register struct buf *dp;
for (tm11 = 0; tm11 < NTM; tm11++) {
if ((um = tmminfo[tm11]) == 0 || um->um_alive == 0 ||
um->um_ubanum != uban)
continue;
- if (printed == 0) {
- printf(" tm");
- DELAY(2000000); /* time to self test */
- printed = 1;
- }
+ printf(" tm%d", tm11);
um->um_tab.b_active = 0;
um->um_tab.b_actf = um->um_tab.b_actl = 0;
if (um->um_ubinfo) {
printf("<%d>", (um->um_ubinfo>>28)&0xf);
ubadone(um);
}
- ((struct device *)(um->um_addr))->tmcs = TM_DCLR;
- for (unit = 0; unit < NTE; unit++) {
- if ((ui = tmdinfo[unit]) == 0)
+ ((struct tmdevice *)(um->um_addr))->tmcs = TM_DCLR;
+ for (teunit = 0; teunit < NTE; teunit++) {
+ if ((ui = tedinfo[teunit]) == 0 || ui->ui_mi != um ||
+ ui->ui_alive == 0)
continue;
- if (ui->ui_alive == 0)
- continue;
- dp = &tmutab[unit];
+ dp = &teutab[teunit];
dp->b_active = 0;
dp->b_forw = 0;
if (um->um_tab.b_actf == NULL)
else
um->um_tab.b_actl->b_forw = dp;
um->um_tab.b_actl = dp;
- tm_softc[unit].sc_openf = -1;
+ if (te_softc[teunit].sc_openf > 0)
+ te_softc[teunit].sc_openf = -1;
}
tmstart(um);
}
caddr_t addr;
dev_t dev;
{
- int unit = TMUNIT(dev);
- register struct tm_softc *sc = &tm_softc[unit];
- register struct buf *bp = &ctmbuf[unit];
+ int teunit = TEUNIT(dev);
+ register struct te_softc *sc = &te_softc[teunit];
+ register struct buf *bp = &ctmbuf[TMUNIT(dev)];
register callcount;
int fcount;
struct mtop mtop;
u.u_error = EIO;
break;
}
- if ((bp->b_flags&B_ERROR) || sc->sc_erreg&TM_BOT)
+ if ((bp->b_flags&B_ERROR) || sc->sc_erreg&TMER_BOT)
break;
}
geterror(bp);
mtget.mt_dsreg = sc->sc_dsreg;
mtget.mt_erreg = sc->sc_erreg;
mtget.mt_resid = sc->sc_resid;
+ mtget.mt_type = MT_ISTM;
if (copyout((caddr_t)&mtget, addr, sizeof(mtget)))
u.u_error = EFAULT;
return;
tmdump()
{
- register struct uba_dinfo *ui;
+ register struct uba_device *ui;
register struct uba_regs *up;
- register struct device *addr;
+ register struct tmdevice *addr;
int blk, num;
int start;
start = 0;
num = maxfree;
#define phys(a,b) ((b)((int)(a)&0x7fffffff))
- if (tmdinfo[0] == 0) {
- printf("dna\n");
- return (-1);
- }
- ui = phys(tmdinfo[0], struct uba_dinfo *);
+ if (tedinfo[0] == 0)
+ return (ENXIO);
+ ui = phys(tedinfo[0], struct uba_device *);
up = phys(ui->ui_hd, struct uba_hd *)->uh_physuba;
-#if VAX780
- if (cpu == VAX_780)
- ubainit(up);
-#endif
+ ubainit(up);
DELAY(1000000);
- addr = (struct device *)ui->ui_physaddr;
+ addr = (struct tmdevice *)ui->ui_physaddr;
tmwait(addr);
addr->tmcs = TM_DCLR | TM_GO;
while (num > 0) {
tmeof(addr);
tmeof(addr);
tmwait(addr);
+ if (addr->tmcs&TM_ERR)
+ return (EIO);
addr->tmcs = TM_REW | TM_GO;
tmwait(addr);
return (0);
tmdwrite(dbuf, num, addr, up)
register dbuf, num;
- register struct device *addr;
+ register struct tmdevice *addr;
struct uba_regs *up;
{
register struct pte *io;
io = up->uba_map;
npf = num+1;
while (--npf != 0)
- *(int *)io++ = (dbuf++ | (1<<UBA_DPSHIFT) | UBA_MRV);
+ *(int *)io++ = (dbuf++ | (1<<UBAMR_DPSHIFT) | UBAMR_MRV);
*(int *)io = 0;
addr->tmbc = -(num*NBPG);
addr->tmba = 0;
}
tmwait(addr)
- register struct device *addr;
+ register struct tmdevice *addr;
{
register s;
}
tmeof(addr)
- struct device *addr;
+ struct tmdevice *addr;
{
tmwait(addr);