Ejemplo n.º 1
0
void
fd_motor_off(void *arg)
{
	struct fd_softc *fd = arg;
	int s;

	s = splbio();
	fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT);
	fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0);
	splx(s);
}
Ejemplo n.º 2
0
void
fd_motor_off(void *arg)
{
	struct fd_softc *fd = arg;
	struct fdc_softc *fdc;

	fdc = device_private(device_parent(fd->sc_dev));

	mutex_enter(&fdc->sc_mtx);
	fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT);
	fd_set_motor(fdc, 0);
	mutex_exit(&fdc->sc_mtx);
}
Ejemplo n.º 3
0
static bool
fdcsuspend(device_t self PMF_FN_ARGS)
{
	struct fdc_softc *fdc = device_private(self);
	int drive;
	struct fd_softc *fd;

	mutex_enter(&fdc->sc_mtx);
	while (fdc->sc_state != DEVIDLE)
		cv_wait(&fdc->sc_cv, &fdc->sc_mtx);
	for (drive = 0; drive < 4; drive++) {
		if ((fd = fdc->sc_fd[drive]) == NULL)
			continue;
		fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT);
	}
	fd_set_motor(fdc, 0);
	mutex_exit(&fdc->sc_mtx);
	return true;
}
Ejemplo n.º 4
0
static int
fdcintr1(struct fdc_softc *fdc)
{
#define	st0	fdc->sc_status[0]
#define	cyl	fdc->sc_status[1]
	struct fd_softc *fd;
	struct buf *bp;
	bus_space_tag_t iot = fdc->sc_iot;
	bus_space_handle_t ioh = fdc->sc_ioh;
	int read, head, sec, i, nblks;
	struct fd_type *type;
	struct ne7_fd_formb *finfo = NULL;

	KASSERT(mutex_owned(&fdc->sc_mtx));
	if (fdc->sc_state == PROBING) {
#ifdef DEBUG
		printf("fdcintr: got probe interrupt\n");
#endif
		fdc->sc_probe++;
		goto out;
	}

loop:
	/* Is there a drive for the controller to do a transfer with? */
	fd = TAILQ_FIRST(&fdc->sc_drives);
	if (fd == NULL) {
		fdc->sc_state = DEVIDLE;
 		goto out;
	}

	/* Is there a transfer to this drive?  If not, deactivate drive. */
	bp = BUFQ_PEEK(fd->sc_q);
	if (bp == NULL) {
		fd->sc_ops = 0;
		TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain);
		fd->sc_active = 0;
		goto loop;
	}

	if (bp->b_flags & B_FORMAT)
		finfo = (struct ne7_fd_formb *)bp->b_data;

	switch (fdc->sc_state) {
	case DEVIDLE:
		fdc->sc_errors = 0;
		fd->sc_skip = 0;
		fd->sc_bcount = bp->b_bcount;
		fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE);
		callout_stop(&fd->sc_motoroff_ch);
		if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) {
			fdc->sc_state = MOTORWAIT;
			return 1;
		}
		if ((fd->sc_flags & FD_MOTOR) == 0) {
			/* Turn on the motor, being careful about pairing. */
			struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1];
			if (ofd && ofd->sc_flags & FD_MOTOR) {
				callout_stop(&ofd->sc_motoroff_ch);
				ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT);
			}
			fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT;
			fd_set_motor(fdc, 0);
			fdc->sc_state = MOTORWAIT;
			/* Allow .25s for motor to stabilize. */
			callout_reset(&fd->sc_motoron_ch, hz / 4,
			    fd_motor_on, fd);
			return 1;
		}
		/* Make sure the right drive is selected. */
		fd_set_motor(fdc, 0);

		/* fall through */
	case DOSEEK:
	doseek:
		if (fd->sc_cylin == bp->b_cylinder)
			goto doio;

		out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */
		out_fdc(iot, ioh, fd->sc_type->steprate);
		out_fdc(iot, ioh, 6);		/* XXX head load time == 6ms */

		out_fdc(iot, ioh, NE7CMD_SEEK);	/* seek function */
		out_fdc(iot, ioh, fd->sc_drive); /* drive number */
		out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step);

		fd->sc_cylin = -1;
		fdc->sc_state = SEEKWAIT;

		iostat_seek(fd->sc_dk.dk_stats);
		disk_busy(&fd->sc_dk);

		callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc);
		return 1;

	case DOIO:
	doio:
		type = fd->sc_type;
		if (finfo)
			fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) -
				      (char *)finfo;
		sec = fd->sc_blkno % type->seccyl;
		nblks = type->seccyl - sec;
		nblks = min(nblks, fd->sc_bcount / FDC_BSIZE);
		nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE);
		fd->sc_nblks = nblks;
		fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE;
		head = sec / type->sectrac;
		sec -= head * type->sectrac;
#ifdef DIAGNOSTIC
		{
			int block;
			block = (fd->sc_cylin * type->heads + head)
			    * type->sectrac + sec;
			if (block != fd->sc_blkno) {
				printf("fdcintr: block %d != blkno "
				    "%" PRId64 "\n", block, fd->sc_blkno);
#ifdef DDB
				 Debugger();
#endif
			}
		}
#endif
		read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE;
		isa_dmastart(fdc->sc_ic, fdc->sc_drq,
		    (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes,
		    NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT);
		bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate);
#ifdef FD_DEBUG
		printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n",
			read ? "read" : "write", fd->sc_drive, fd->sc_cylin,
			head, sec, nblks);
#endif
		if (finfo) {
			/* formatting */
			if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) {
				fdc->sc_errors = 4;
				fdcretry(fdc);
				goto loop;
			}
			out_fdc(iot, ioh, (head << 2) | fd->sc_drive);
			out_fdc(iot, ioh, finfo->fd_formb_secshift);
			out_fdc(iot, ioh, finfo->fd_formb_nsecs);
			out_fdc(iot, ioh, finfo->fd_formb_gaplen);
			out_fdc(iot, ioh, finfo->fd_formb_fillbyte);
		} else {
			if (read)
				out_fdc(iot, ioh, NE7CMD_READ);	/* READ */
			else
				out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */
			out_fdc(iot, ioh, (head << 2) | fd->sc_drive);
			out_fdc(iot, ioh, fd->sc_cylin); /* track */
			out_fdc(iot, ioh, head);
			out_fdc(iot, ioh, sec + 1);	 /* sector +1 */
			out_fdc(iot, ioh, type->secsize);/* sector size */
			out_fdc(iot, ioh, type->sectrac);/* sectors/track */
			out_fdc(iot, ioh, type->gap1);	 /* gap1 size */
			out_fdc(iot, ioh, type->datalen);/* data length */
		}
		fdc->sc_state = IOCOMPLETE;

		disk_busy(&fd->sc_dk);

		/* allow 2 seconds for operation */
		callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc);
		return 1;				/* will return later */

	case SEEKWAIT:
		callout_stop(&fdc->sc_timo_ch);
		fdc->sc_state = SEEKCOMPLETE;
		/* allow 1/50 second for heads to settle */
		callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc);
		return 1;

	case SEEKCOMPLETE:
		/* no data on seek */
		disk_unbusy(&fd->sc_dk, 0, 0);

		/* Make sure seek really happened. */
		out_fdc(iot, ioh, NE7CMD_SENSEI);
		if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 ||
		    cyl != bp->b_cylinder * fd->sc_type->step) {
#ifdef FD_DEBUG
			fdcstatus(fd->sc_dev, 2, "seek failed");
#endif
			fdcretry(fdc);
			goto loop;
		}
		fd->sc_cylin = bp->b_cylinder;
		goto doio;

	case IOTIMEDOUT:
		isa_dmaabort(fdc->sc_ic, fdc->sc_drq);
	case SEEKTIMEDOUT:
	case RECALTIMEDOUT:
	case RESETTIMEDOUT:
		fdcretry(fdc);
		goto loop;

	case IOCOMPLETE: /* IO DONE, post-analyze */
		callout_stop(&fdc->sc_timo_ch);

		disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid),
		    (bp->b_flags & B_READ));

		if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) {
			isa_dmaabort(fdc->sc_ic, fdc->sc_drq);
#ifdef FD_DEBUG
			fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ?
			    "read failed" : "write failed");
			printf("blkno %llu nblks %d\n",
			    (unsigned long long)fd->sc_blkno, fd->sc_nblks);
#endif
			fdcretry(fdc);
			goto loop;
		}
		isa_dmadone(fdc->sc_ic, fdc->sc_drq);
		if (fdc->sc_errors) {
			diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF,
			    fd->sc_skip / FDC_BSIZE, NULL);
			printf("\n");
			fdc->sc_errors = 0;
		}
		fd->sc_blkno += fd->sc_nblks;
		fd->sc_skip += fd->sc_nbytes;
		fd->sc_bcount -= fd->sc_nbytes;
		if (!finfo && fd->sc_bcount > 0) {
			bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl;
			goto doseek;
		}
		fdfinish(fd, bp);
		goto loop;

	case DORESET:
		/* try a reset, keep motor on */
		fd_set_motor(fdc, 1);
		delay(100);
		fd_set_motor(fdc, 0);
		fdc->sc_state = RESETCOMPLETE;
		callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc);
		return 1;			/* will return later */

	case RESETCOMPLETE:
		callout_stop(&fdc->sc_timo_ch);
		/* clear the controller output buffer */
		for (i = 0; i < 4; i++) {
			out_fdc(iot, ioh, NE7CMD_SENSEI);
			(void) fdcresult(fdc);
		}

		/* fall through */
	case DORECAL:
		out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */
		out_fdc(iot, ioh, fd->sc_drive);
		fdc->sc_state = RECALWAIT;
		callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc);
		return 1;			/* will return later */

	case RECALWAIT:
		callout_stop(&fdc->sc_timo_ch);
		fdc->sc_state = RECALCOMPLETE;
		/* allow 1/30 second for heads to settle */
		callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc);
		return 1;			/* will return later */

	case RECALCOMPLETE:
		out_fdc(iot, ioh, NE7CMD_SENSEI);
		if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) {
#ifdef FD_DEBUG
			fdcstatus(fd->sc_dev, 2, "recalibrate failed");
#endif
			fdcretry(fdc);
			goto loop;
		}
		fd->sc_cylin = 0;
		goto doseek;

	case MOTORWAIT:
		if (fd->sc_flags & FD_MOTOR_WAIT)
			return 1;		/* time's not up yet */
		goto doseek;

	default:
		fdcstatus(fd->sc_dev, 0, "stray interrupt");
		return 1;
	}
#undef	st0
#undef	cyl

out:
	cv_signal(&fdc->sc_cv);
	return 1;
}
Ejemplo n.º 5
0
/*
 * Called from the controller.
 */
int
fdintr(struct fdc_softc *fdc)
{
#define	st0	fdc->sc_status[0]
#define	cyl	fdc->sc_status[1]
	struct fd_softc *fd;
	struct buf *bp;
	bus_space_tag_t iot = fdc->sc_iot;
	bus_space_handle_t ioh = fdc->sc_ioh;
	bus_space_handle_t ioh_ctl = fdc->sc_ioh_ctl;
	int read, head, sec, i, nblks, cylin;
	struct fd_type *type;
	struct fd_formb *finfo = NULL;
	int fd_bsize;

loop:
	/* Is there a transfer to this drive?  If not, deactivate drive. */
	fd = TAILQ_FIRST(&fdc->sc_link.fdlink.sc_drives);
	if (fd == NULL) {
		fdc->sc_state = DEVIDLE;
		return 1;
	}
	fd_bsize = FD_BSIZE(fd);

	bp = fd->sc_bp;
	if (bp == NULL) {
		fd->sc_ops = 0;
		TAILQ_REMOVE(&fdc->sc_link.fdlink.sc_drives, fd, sc_drivechain);
		goto loop;
	}

	if (bp->b_flags & B_FORMAT)
	    finfo = (struct fd_formb *)bp->b_data;

	cylin = ((bp->b_blkno * DEV_BSIZE) + (bp->b_bcount - bp->b_resid)) /
	    (fd_bsize * fd->sc_type->seccyl);

	switch (fdc->sc_state) {
	case DEVIDLE:
		fdc->sc_errors = 0;
		fd->sc_skip = 0;
		fd->sc_bcount = bp->b_bcount;
		fd->sc_blkno = bp->b_blkno / (fd_bsize / DEV_BSIZE);
		timeout_del(&fd->fd_motor_off_to);
		if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) {
			fdc->sc_state = MOTORWAIT;
			return 1;
		}
		if ((fd->sc_flags & FD_MOTOR) == 0) {
			/* Turn on the motor, being careful about pairing. */
			struct fd_softc *ofd =
				fdc->sc_link.fdlink.sc_fd[fd->sc_drive ^ 1];
			if (ofd && ofd->sc_flags & FD_MOTOR) {
				timeout_del(&ofd->fd_motor_off_to);
				ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT);
			}
			fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT;
			fd_set_motor(fdc, 0);
			fdc->sc_state = MOTORWAIT;
			/* Allow .25s for motor to stabilize. */
			timeout_add_msec(&fd->fd_motor_on_to, 250);
			return 1;
		}
		/* Make sure the right drive is selected. */
		fd_set_motor(fdc, 0);

		/* FALLTHROUGH */
	case DOSEEK:
	doseek:
		if (fd->sc_cylin == cylin)
			goto doio;

		out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */
		out_fdc(iot, ioh, fd->sc_type->steprate);
		out_fdc(iot, ioh, 6);		/* XXX head load time == 6ms */

		out_fdc(iot, ioh, NE7CMD_SEEK);	/* seek function */
		out_fdc(iot, ioh, fd->sc_drive);	/* drive number */
		out_fdc(iot, ioh, cylin * fd->sc_type->step);

		fd->sc_cylin = -1;
		fdc->sc_state = SEEKWAIT;

		fd->sc_dk.dk_seek++;
		disk_busy(&fd->sc_dk);

		timeout_add_sec(&fd->fdtimeout_to, 4);
		return 1;

	case DOIO:
	doio:
		type = fd->sc_type;
		if (finfo)
		    fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) -
			(char *)finfo;
		sec = fd->sc_blkno % type->seccyl;
		nblks = type->seccyl - sec;
		nblks = min(nblks, fd->sc_bcount / fd_bsize);
		nblks = min(nblks, FDC_MAXIOSIZE / fd_bsize);
		fd->sc_nblks = nblks;
		fd->sc_nbytes = finfo ? bp->b_bcount : nblks * fd_bsize;
		head = sec / type->sectrac;
		sec -= head * type->sectrac;
#ifdef DIAGNOSTIC
		{int block;
		 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec;
		 if (block != fd->sc_blkno) {
			 panic("fdintr: block %d != blkno %llu", block, fd->sc_blkno);
		 }}
#endif
		read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE;
		isadma_start(bp->b_data + fd->sc_skip, fd->sc_nbytes,
		    fdc->sc_drq, read);
		bus_space_write_1(iot, ioh_ctl, fdctl, type->rate);
#ifdef FD_DEBUG
		printf("fdintr: %s drive %d track %d head %d sec %d nblks %d\n",
		    read ? "read" : "write", fd->sc_drive, fd->sc_cylin, head,
		    sec, nblks);
#endif
		if (finfo) {
                        /* formatting */
			if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) {
			    fdc->sc_errors = 4;
			    fdretry(fd);
			    goto loop;
			}
                        out_fdc(iot, ioh, (head << 2) | fd->sc_drive);
                        out_fdc(iot, ioh, finfo->fd_formb_secshift);
                        out_fdc(iot, ioh, finfo->fd_formb_nsecs);
                        out_fdc(iot, ioh, finfo->fd_formb_gaplen);
                        out_fdc(iot, ioh, finfo->fd_formb_fillbyte);
		} else {
			if (read)
				out_fdc(iot, ioh, NE7CMD_READ);	/* READ */
			else
				out_fdc(iot, ioh, NE7CMD_WRITE);/* WRITE */
			out_fdc(iot, ioh, (head << 2) | fd->sc_drive);
			out_fdc(iot, ioh, fd->sc_cylin);	/* track */
			out_fdc(iot, ioh, head);
			out_fdc(iot, ioh, sec + 1);		/* sec +1 */
			out_fdc(iot, ioh, type->secsize);	/* sec size */
			out_fdc(iot, ioh, type->sectrac);	/* secs/track */
			out_fdc(iot, ioh, type->gap1);		/* gap1 size */
			out_fdc(iot, ioh, type->datalen);	/* data len */
		}
		fdc->sc_state = IOCOMPLETE;

		disk_busy(&fd->sc_dk);

		/* allow 2 seconds for operation */
		timeout_add_sec(&fd->fdtimeout_to, 2);
		return 1;				/* will return later */

	case SEEKWAIT:
		timeout_del(&fd->fdtimeout_to);
		fdc->sc_state = SEEKCOMPLETE;
		/* allow 1/50 second for heads to settle */
		timeout_add_msec(&fdc->fdcpseudointr_to, 20);
		return 1;

	case SEEKCOMPLETE:
		disk_unbusy(&fd->sc_dk, 0, 0);	/* no data on seek */

		/* Make sure seek really happened. */
		out_fdc(iot, ioh, NE7CMD_SENSEI);
		if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 ||
		    cyl != cylin * fd->sc_type->step) {
#ifdef FD_DEBUG
			fdcstatus(&fd->sc_dev, 2, "seek failed");
#endif
			fdretry(fd);
			goto loop;
		}
		fd->sc_cylin = cylin;
		goto doio;

	case IOTIMEDOUT:
		isadma_abort(fdc->sc_drq);
	case SEEKTIMEDOUT:
	case RECALTIMEDOUT:
	case RESETTIMEDOUT:
		fdretry(fd);
		goto loop;

	case IOCOMPLETE: /* IO DONE, post-analyze */
		timeout_del(&fd->fdtimeout_to);

		disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid),
		    (bp->b_flags & B_READ));

		if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) {
			isadma_abort(fdc->sc_drq);
#ifdef FD_DEBUG
			fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ?
			    "read failed" : "write failed");
			printf("blkno %lld nblks %d\n",
			    (long long)fd->sc_blkno, fd->sc_nblks);
#endif
			fdretry(fd);
			goto loop;
		}
		read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE;
		isadma_done(fdc->sc_drq);
		if (fdc->sc_errors) {
			diskerr(bp, "fd", "soft error", LOG_PRINTF,
			    fd->sc_skip / fd_bsize, (struct disklabel *)NULL);
			printf("\n");
			fdc->sc_errors = 0;
		}

		fd->sc_blkno += fd->sc_nblks;
		fd->sc_skip += fd->sc_nbytes;
		fd->sc_bcount -= fd->sc_nbytes;
		bp->b_resid -= fd->sc_nbytes;
		if (!finfo && fd->sc_bcount > 0) {
			cylin = fd->sc_blkno / fd->sc_type->seccyl;
			goto doseek;
		}
		fdfinish(fd, bp);
		goto loop;

	case DORESET:
		/* try a reset, keep motor on */
		fd_set_motor(fdc, 1);
		delay(100);
		fd_set_motor(fdc, 0);
		fdc->sc_state = RESETCOMPLETE;
		timeout_add_msec(&fd->fdtimeout_to, 500);
		return 1;			/* will return later */

	case RESETCOMPLETE:
		timeout_del(&fd->fdtimeout_to);
		/* clear the controller output buffer */
		for (i = 0; i < 4; i++) {
			out_fdc(iot, ioh, NE7CMD_SENSEI);
			(void) fdcresult(fdc);
		}

		/* FALLTHROUGH */
	case DORECAL:
		out_fdc(iot, ioh, NE7CMD_RECAL);	/* recal function */
		out_fdc(iot, ioh, fd->sc_drive);
		fdc->sc_state = RECALWAIT;
		timeout_add_sec(&fd->fdtimeout_to, 5);
		return 1;			/* will return later */

	case RECALWAIT:
		timeout_del(&fd->fdtimeout_to);
		fdc->sc_state = RECALCOMPLETE;
		/* allow 1/30 second for heads to settle */
		timeout_add(&fdc->fdcpseudointr_to, hz / 30);
		return 1;			/* will return later */

	case RECALCOMPLETE:
		out_fdc(iot, ioh, NE7CMD_SENSEI);
		if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) {
#ifdef FD_DEBUG
			fdcstatus(&fd->sc_dev, 2, "recalibrate failed");
#endif
			fdretry(fd);
			goto loop;
		}
		fd->sc_cylin = 0;
		goto doseek;

	case MOTORWAIT:
		if (fd->sc_flags & FD_MOTOR_WAIT)
			return 1;		/* time's not up yet */
		goto doseek;

	default:
		fdcstatus(&fd->sc_dev, 0, "stray interrupt");
		return 1;
	}
#ifdef DIAGNOSTIC
	panic("fdintr: impossible");
#endif
#undef	st0
#undef	cyl
}