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-rw-r--r--sys/dev/isa/fd.c465
-rw-r--r--sys/dev/isa/fdc.c374
-rw-r--r--sys/dev/isa/fdlink.h105
3 files changed, 547 insertions, 397 deletions
diff --git a/sys/dev/isa/fd.c b/sys/dev/isa/fd.c
index 748cd8a1471..50e9b2bbde8 100644
--- a/sys/dev/isa/fd.c
+++ b/sys/dev/isa/fd.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: fd.c,v 1.20 1996/08/29 18:03:27 downsj Exp $ */
+/* $OpenBSD: fd.c,v 1.21 1996/09/01 20:58:26 downsj Exp $ */
/* $NetBSD: fd.c,v 1.90 1996/05/12 23:12:03 mycroft Exp $ */
/*-
@@ -75,6 +75,8 @@
#include <dev/ic/mc146818reg.h> /* for NVRAM access */
#include <i386/isa/nvram.h>
+#include <i386/isa/fdlink.h>
+
#define FDUNIT(dev) (minor(dev) / 8)
#define FDTYPE(dev) (minor(dev) % 8)
@@ -83,59 +85,6 @@
#define b_cylin b_resid
-enum fdc_state {
- DEVIDLE = 0,
- MOTORWAIT,
- DOSEEK,
- SEEKWAIT,
- SEEKTIMEDOUT,
- SEEKCOMPLETE,
- DOIO,
- IOCOMPLETE,
- IOTIMEDOUT,
- DORESET,
- RESETCOMPLETE,
- RESETTIMEDOUT,
- DORECAL,
- RECALWAIT,
- RECALTIMEDOUT,
- RECALCOMPLETE,
-};
-
-/* software state, per controller */
-struct fdc_softc {
- struct device sc_dev; /* boilerplate */
- struct isadev sc_id;
- void *sc_ih;
-
- bus_chipset_tag_t sc_bc; /* ISA chipset identifier */
- bus_io_handle_t sc_ioh; /* ISA io handle */
-
- int sc_drq;
-
- struct fd_softc *sc_fd[4]; /* pointers to children */
- TAILQ_HEAD(drivehead, fd_softc) sc_drives;
- enum fdc_state sc_state;
- int sc_errors; /* number of retries so far */
- u_char sc_status[7]; /* copy of registers */
-};
-
-/* controller driver configuration */
-int fdcprobe __P((struct device *, void *, void *));
-int fdprint __P((void *, char *));
-#ifdef NEWCONFIG
-void fdcforceintr __P((void *));
-#endif
-void fdcattach __P((struct device *, struct device *, void *));
-
-struct cfattach fdc_ca = {
- sizeof(struct fdc_softc), fdcprobe, fdcattach
-};
-
-struct cfdriver fdc_cd = {
- NULL, "fdc", DV_DULL
-};
-
/* fd_type struct now in ioctl_fd.h */
/* The order of entries in the following table is important -- BEWARE! */
@@ -197,177 +146,14 @@ void fdstart __P((struct fd_softc *));
struct dkdriver fddkdriver = { fdstrategy };
-struct fd_type *fd_nvtotype __P((char *, int, int));
void fd_set_motor __P((struct fdc_softc *fdc, int reset));
void fd_motor_off __P((void *arg));
void fd_motor_on __P((void *arg));
-int fdcresult __P((struct fdc_softc *fdc));
-int out_fdc __P((bus_chipset_tag_t bc, bus_io_handle_t ioh, u_char x));
-void fdcstart __P((struct fdc_softc *fdc));
-void fdcstatus __P((struct device *dv, int n, char *s));
-void fdctimeout __P((void *arg));
-void fdcpseudointr __P((void *arg));
-int fdcintr __P((void *));
-void fdcretry __P((struct fdc_softc *fdc));
void fdfinish __P((struct fd_softc *fd, struct buf *bp));
int fdformat __P((dev_t, struct fd_formb *, struct proc *));
__inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t));
-
-int
-fdcprobe(parent, match, aux)
- struct device *parent;
- void *match, *aux;
-{
- register struct isa_attach_args *ia = aux;
- bus_chipset_tag_t bc;
- bus_io_handle_t ioh;
- int rv;
-
- bc = ia->ia_bc;
- rv = 0;
-
- /* Map the i/o space. */
- if (bus_io_map(bc, ia->ia_iobase, FDC_NPORT, &ioh))
- return 0;
-
- /* reset */
- bus_io_write_1(bc, ioh, fdout, 0);
- delay(100);
- bus_io_write_1(bc, ioh, fdout, FDO_FRST);
-
- /* see if it can handle a command */
- if (out_fdc(bc, ioh, NE7CMD_SPECIFY) < 0)
- goto out;
- out_fdc(bc, ioh, 0xdf);
- out_fdc(bc, ioh, 2);
-
-#ifdef NEWCONFIG
- if (ia->ia_iobase == IOBASEUNK || ia->ia_drq == DRQUNK)
- return 0;
-
- if (ia->ia_irq == IRQUNK) {
- ia->ia_irq = isa_discoverintr(fdcforceintr, aux);
- if (ia->ia_irq == IRQNONE)
- goto out;
-
- /* reset it again */
- bus_io_write_1(bc, ioh, fdout, 0);
- delay(100);
- bus_io_write_1(bc, ioh, fdout, FDO_FRST);
- }
-#endif
-
- rv = 1;
- ia->ia_iosize = FDC_NPORT;
- ia->ia_msize = 0;
-
- out:
- bus_io_unmap(bc, ioh, FDC_NPORT);
- return rv;
-}
-
-#ifdef NEWCONFIG
-/*
- * XXX This is broken, and needs fixing. In general, the interface needs
- * XXX to change.
- */
-void
-fdcforceintr(aux)
- void *aux;
-{
- struct isa_attach_args *ia = aux;
- int iobase = ia->ia_iobase;
-
- /* the motor is off; this should generate an error with or
- without a disk drive present */
- out_fdc(bc, ioh, NE7CMD_SEEK);
- out_fdc(bc, ioh, 0);
- out_fdc(bc, ioh, 0);
-}
-#endif
-
-/*
- * Arguments passed between fdcattach and fdprobe.
- */
-struct fdc_attach_args {
- int fa_drive;
- int fa_flags;
- struct fd_type *fa_deftype;
-};
-
-/*
- * Print the location of a disk drive (called just before attaching the
- * the drive). If `fdc' is not NULL, the drive was found but was not
- * in the system config file; print the drive name as well.
- * Return QUIET (config_find ignores this if the device was configured) to
- * avoid printing `fdN not configured' messages.
- */
-int
-fdprint(aux, fdc)
- void *aux;
- char *fdc;
-{
- register struct fdc_attach_args *fa = aux;
-
- if (!fdc)
- printf(" drive %d", fa->fa_drive);
- return QUIET;
-}
-
-void
-fdcattach(parent, self, aux)
- struct device *parent, *self;
- void *aux;
-{
- struct fdc_softc *fdc = (void *)self;
- bus_chipset_tag_t bc;
- bus_io_handle_t ioh;
- struct isa_attach_args *ia = aux;
- struct fdc_attach_args fa;
- int type;
-
- bc = ia->ia_bc;
-
- /* Re-map the I/O space. */
- if (bus_io_map(bc, ia->ia_iobase, FDC_NPORT, &ioh))
- panic("fdcattach: couldn't map I/O ports");
-
- fdc->sc_bc = bc;
- fdc->sc_ioh = ioh;
-
- fdc->sc_drq = ia->ia_drq;
- fdc->sc_state = DEVIDLE;
- TAILQ_INIT(&fdc->sc_drives);
-
- printf("\n");
-
-#ifdef NEWCONFIG
- at_setup_dmachan(fdc->sc_drq, FDC_MAXIOSIZE);
- isa_establish(&fdc->sc_id, &fdc->sc_dev);
-#endif
- fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
- IPL_BIO, fdcintr, fdc, fdc->sc_dev.dv_xname);
-
- /*
- * The NVRAM info only tells us about the first two disks on the
- * `primary' floppy controller.
- */
- if (fdc->sc_dev.dv_unit == 0)
- type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */
- else
- type = -1;
-
- /* physical limit: four drives per controller. */
- for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
- fa.fa_flags = 0;
- if (type >= 0 && fa.fa_drive < 2)
- fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname,
- type, fa.fa_drive);
- else
- fa.fa_deftype = NULL; /* unknown */
- (void)config_found(self, (void *)&fa, fdprint);
- }
-}
+void fdretry __P((struct fd_softc *));
+void fdtimeout __P((void *));
int
fdprobe(parent, match, aux)
@@ -709,56 +495,11 @@ fd_motor_on(arg)
s = splbio();
fd->sc_flags &= ~FD_MOTOR_WAIT;
if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT))
- (void) fdcintr(fdc);
+ (void) fdintr(fdc);
splx(s);
}
int
-fdcresult(fdc)
- struct fdc_softc *fdc;
-{
- bus_chipset_tag_t bc = fdc->sc_bc;
- bus_io_handle_t ioh = fdc->sc_ioh;
- u_char i;
- int j = 100000,
- n = 0;
-
- for (; j; j--) {
- i = bus_io_read_1(bc, ioh, fdsts) &
- (NE7_DIO | NE7_RQM | NE7_CB);
- if (i == NE7_RQM)
- return n;
- if (i == (NE7_DIO | NE7_RQM | NE7_CB)) {
- if (n >= sizeof(fdc->sc_status)) {
- log(LOG_ERR, "fdcresult: overrun\n");
- return -1;
- }
- fdc->sc_status[n++] = bus_io_read_1(bc, ioh, fddata);
- }
- }
- log(LOG_ERR, "fdcresult: timeout\n");
- return -1;
-}
-
-int
-out_fdc(bc, ioh, x)
- bus_chipset_tag_t bc;
- bus_io_handle_t ioh;
- u_char x;
-{
- int i = 100000;
-
- while ((bus_io_read_1(bc, ioh, fdsts) & NE7_DIO) && i-- > 0);
- if (i <= 0)
- return -1;
- while ((bus_io_read_1(bc, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0);
- if (i <= 0)
- return -1;
- bus_io_write_1(bc, ioh, fddata, x);
- return 0;
-}
-
-int
fdopen(dev, flags, mode, p)
dev_t dev;
int flags;
@@ -804,102 +545,34 @@ fdclose(dev, flags, mode, p)
return 0;
}
-void
-fdcstart(fdc)
- struct fdc_softc *fdc;
-{
-
-#ifdef DIAGNOSTIC
- /* only got here if controller's drive queue was inactive; should
- be in idle state */
- if (fdc->sc_state != DEVIDLE) {
- printf("fdcstart: not idle\n");
- return;
- }
-#endif
- (void) fdcintr(fdc);
-}
-
-void
-fdcstatus(dv, n, s)
- struct device *dv;
- int n;
- char *s;
-{
- struct fdc_softc *fdc = (void *)dv->dv_parent;
-
- if (n == 0) {
- out_fdc(fdc->sc_bc, fdc->sc_ioh, NE7CMD_SENSEI);
- (void) fdcresult(fdc);
- n = 2;
- }
-
- printf("%s: %s", dv->dv_xname, s);
-
- switch (n) {
- case 0:
- printf("\n");
- break;
- case 2:
- printf(" (st0 %b cyl %d)\n",
- fdc->sc_status[0], NE7_ST0BITS,
- fdc->sc_status[1]);
- break;
- case 7:
- printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n",
- fdc->sc_status[0], NE7_ST0BITS,
- fdc->sc_status[1], NE7_ST1BITS,
- fdc->sc_status[2], NE7_ST2BITS,
- fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]);
- break;
-#ifdef DIAGNOSTIC
- default:
- printf("\nfdcstatus: weird size");
- break;
-#endif
- }
-}
-
-void
-fdctimeout(arg)
- void *arg;
+int
+fdsize(dev)
+ dev_t dev;
{
- struct fdc_softc *fdc = arg;
- struct fd_softc *fd = fdc->sc_drives.tqh_first;
- int s;
-
- s = splbio();
-#ifdef DEBUG
- log(LOG_ERR,"fdctimeout: state %d\n", fdc->sc_state);
-#endif
- fdcstatus(&fd->sc_dev, 0, "timeout");
-
- if (fd->sc_q.b_actf)
- fdc->sc_state++;
- else
- fdc->sc_state = DEVIDLE;
- (void) fdcintr(fdc);
- splx(s);
+ /* Swapping to floppies would not make sense. */
+ return -1;
}
-void
-fdcpseudointr(arg)
- void *arg;
+int
+fddump(dev, blkno, va, size)
+ dev_t dev;
+ daddr_t blkno;
+ caddr_t va;
+ size_t size;
{
- int s;
- /* Just ensure it has the right spl. */
- s = splbio();
- (void) fdcintr(arg);
- splx(s);
+ /* Not implemented. */
+ return ENXIO;
}
+/*
+ * Called from the controller.
+ */
int
-fdcintr(arg)
- void *arg;
+fdintr(fdc)
+ struct fdc_softc *fdc;
{
- struct fdc_softc *fdc = arg;
#define st0 fdc->sc_status[0]
#define cyl fdc->sc_status[1]
struct fd_softc *fd;
@@ -911,14 +584,13 @@ fdcintr(arg)
struct fd_formb *finfo = NULL;
loop:
- /* Is there a drive for the controller to do a transfer with? */
+ /* Is there a transfer to this drive? If not, deactivate drive. */
fd = fdc->sc_drives.tqh_first;
if (fd == NULL) {
fdc->sc_state = DEVIDLE;
- return 1;
+ return 1;
}
- /* Is there a transfer to this drive? If not, deactivate drive. */
bp = fd->sc_q.b_actf;
if (bp == NULL) {
fd->sc_ops = 0;
@@ -978,7 +650,7 @@ loop:
fd->sc_dk.dk_seek++;
disk_busy(&fd->sc_dk);
- timeout(fdctimeout, fdc, 4 * hz);
+ timeout(fdtimeout, fd, 4 * hz);
return 1;
case DOIO:
@@ -999,7 +671,7 @@ loop:
{int block;
block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec;
if (block != fd->sc_blkno) {
- printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno);
+ printf("fdintr: block %d != blkno %d\n", block, fd->sc_blkno);
#ifdef DDB
Debugger();
#endif
@@ -1015,7 +687,7 @@ loop:
#endif
bus_io_write_1(bc, ioh, fdctl, type->rate);
#ifdef FD_DEBUG
- printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n",
+ 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
@@ -1023,7 +695,7 @@ loop:
/* formatting */
if (out_fdc(bc, ioh, NE7CMD_FORMAT) < 0) {
fdc->sc_errors = 4;
- fdcretry(fdc);
+ fdretry(fd);
goto loop;
}
out_fdc(bc, ioh, (head << 2) | fd->sc_drive);
@@ -1050,11 +722,11 @@ loop:
disk_busy(&fd->sc_dk);
/* allow 2 seconds for operation */
- timeout(fdctimeout, fdc, 2 * hz);
+ timeout(fdtimeout, fd, 2 * hz);
return 1; /* will return later */
case SEEKWAIT:
- untimeout(fdctimeout, fdc);
+ untimeout(fdtimeout, fd);
fdc->sc_state = SEEKCOMPLETE;
/* allow 1/50 second for heads to settle */
timeout(fdcpseudointr, fdc, hz / 50);
@@ -1070,7 +742,7 @@ loop:
#ifdef FD_DEBUG
fdcstatus(&fd->sc_dev, 2, "seek failed");
#endif
- fdcretry(fdc);
+ fdretry(fd);
goto loop;
}
fd->sc_cylin = bp->b_cylin;
@@ -1085,11 +757,11 @@ loop:
case SEEKTIMEDOUT:
case RECALTIMEDOUT:
case RESETTIMEDOUT:
- fdcretry(fdc);
+ fdretry(fd);
goto loop;
case IOCOMPLETE: /* IO DONE, post-analyze */
- untimeout(fdctimeout, fdc);
+ untimeout(fdtimeout, fd);
disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid));
@@ -1105,7 +777,7 @@ loop:
printf("blkno %d nblks %d\n",
fd->sc_blkno, fd->sc_nblks);
#endif
- fdcretry(fdc);
+ fdretry(fd);
goto loop;
}
#ifdef NEWCONFIG
@@ -1137,11 +809,11 @@ loop:
delay(100);
fd_set_motor(fdc, 0);
fdc->sc_state = RESETCOMPLETE;
- timeout(fdctimeout, fdc, hz / 2);
+ timeout(fdtimeout, fd, hz / 2);
return 1; /* will return later */
case RESETCOMPLETE:
- untimeout(fdctimeout, fdc);
+ untimeout(fdtimeout, fd);
/* clear the controller output buffer */
for (i = 0; i < 4; i++) {
out_fdc(bc, ioh, NE7CMD_SENSEI);
@@ -1153,11 +825,11 @@ loop:
out_fdc(bc, ioh, NE7CMD_RECAL); /* recalibrate function */
out_fdc(bc, ioh, fd->sc_drive);
fdc->sc_state = RECALWAIT;
- timeout(fdctimeout, fdc, 5 * hz);
+ timeout(fdtimeout, fd, 5 * hz);
return 1; /* will return later */
case RECALWAIT:
- untimeout(fdctimeout, fdc);
+ untimeout(fdtimeout, fd);
fdc->sc_state = RECALCOMPLETE;
/* allow 1/30 second for heads to settle */
timeout(fdcpseudointr, fdc, hz / 30);
@@ -1169,7 +841,7 @@ loop:
#ifdef FD_DEBUG
fdcstatus(&fd->sc_dev, 2, "recalibrate failed");
#endif
- fdcretry(fdc);
+ fdretry(fd);
goto loop;
}
fd->sc_cylin = 0;
@@ -1185,21 +857,41 @@ loop:
return 1;
}
#ifdef DIAGNOSTIC
- panic("fdcintr: impossible");
+ panic("fdintr: impossible");
#endif
#undef st0
#undef cyl
}
void
-fdcretry(fdc)
- struct fdc_softc *fdc;
+fdtimeout(arg)
+ void *arg;
{
- struct fd_softc *fd;
- struct buf *bp;
+ struct fd_softc *fd = arg;
+ struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent;
+ int s;
- fd = fdc->sc_drives.tqh_first;
- bp = fd->sc_q.b_actf;
+ s = splbio();
+#ifdef DEBUG
+ log(LOG_ERR,"fdtimeout: state %d\n", fdc->sc_state);
+#endif
+ fdcstatus(&fd->sc_dev, 0, "timeout");
+
+ if (fd->sc_q.b_actf)
+ fdc->sc_state++;
+ else
+ fdc->sc_state = DEVIDLE;
+
+ (void) fdintr(fdc);
+ splx(s);
+}
+
+void
+fdretry(fd)
+ struct fd_softc *fd;
+{
+ struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent;
+ struct buf *bp = fd->sc_q.b_actf;
if (fd->sc_opts & FDOPT_NORETRY)
goto fail;
@@ -1237,27 +929,6 @@ fdcretry(fdc)
}
int
-fdsize(dev)
- dev_t dev;
-{
-
- /* Swapping to floppies would not make sense. */
- return -1;
-}
-
-int
-fddump(dev, blkno, va, size)
- dev_t dev;
- daddr_t blkno;
- caddr_t va;
- size_t size;
-{
-
- /* Not implemented. */
- return ENXIO;
-}
-
-int
fdioctl(dev, cmd, addr, flag, p)
dev_t dev;
u_long cmd;
diff --git a/sys/dev/isa/fdc.c b/sys/dev/isa/fdc.c
new file mode 100644
index 00000000000..cd59a36ebab
--- /dev/null
+++ b/sys/dev/isa/fdc.c
@@ -0,0 +1,374 @@
+/* $OpenBSD: fdc.c,v 1.1 1996/09/01 20:58:26 downsj Exp $ */
+/* $NetBSD: fd.c,v 1.90 1996/05/12 23:12:03 mycroft Exp $ */
+
+/*-
+ * Copyright (c) 1993, 1994, 1995 Charles Hannum.
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Don Ahn.
+ *
+ * Portions Copyright (c) 1993, 1994 by
+ * jc@irbs.UUCP (John Capo)
+ * vak@zebub.msk.su (Serge Vakulenko)
+ * ache@astral.msk.su (Andrew A. Chernov)
+ * joerg_wunsch@uriah.sax.de (Joerg Wunsch)
+ *
+ * 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.
+ *
+ * @(#)fd.c 7.4 (Berkeley) 5/25/91
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/device.h>
+#include <sys/disklabel.h>
+#include <sys/dkstat.h>
+#include <sys/disk.h>
+#include <sys/buf.h>
+#include <sys/malloc.h>
+#include <sys/uio.h>
+#include <sys/mtio.h>
+#include <sys/syslog.h>
+#include <sys/queue.h>
+
+#include <machine/cpu.h>
+#include <machine/bus.h>
+#include <machine/conf.h>
+#include <machine/intr.h>
+#include <machine/ioctl_fd.h>
+
+#include <dev/isa/isavar.h>
+#include <dev/isa/isadmavar.h>
+#include <i386/isa/fdreg.h>
+
+#include <dev/ic/mc146818reg.h> /* for NVRAM access */
+#include <i386/isa/nvram.h>
+
+#include <i386/isa/fdlink.h>
+
+#include "fd.h"
+
+/* controller driver configuration */
+int fdcprobe __P((struct device *, void *, void *));
+#ifdef NEWCONFIG
+void fdcforceintr __P((void *));
+#endif
+void fdcattach __P((struct device *, struct device *, void *));
+
+struct cfattach fdc_ca = {
+ sizeof(struct fdc_softc), fdcprobe, fdcattach
+};
+
+struct cfdriver fdc_cd = {
+ NULL, "fdc", DV_DULL
+};
+
+int fddprint __P((void *, char *));
+int fdcintr __P((void *));
+
+int
+fdcprobe(parent, match, aux)
+ struct device *parent;
+ void *match, *aux;
+{
+ register struct isa_attach_args *ia = aux;
+ bus_chipset_tag_t bc;
+ bus_io_handle_t ioh;
+ int rv;
+
+ bc = ia->ia_bc;
+ rv = 0;
+
+ /* Map the i/o space. */
+ if (bus_io_map(bc, ia->ia_iobase, FDC_NPORT, &ioh))
+ return 0;
+
+ /* reset */
+ bus_io_write_1(bc, ioh, fdout, 0);
+ delay(100);
+ bus_io_write_1(bc, ioh, fdout, FDO_FRST);
+
+ /* see if it can handle a command */
+ if (out_fdc(bc, ioh, NE7CMD_SPECIFY) < 0)
+ goto out;
+ out_fdc(bc, ioh, 0xdf);
+ out_fdc(bc, ioh, 2);
+
+#ifdef NEWCONFIG
+ if (ia->ia_iobase == IOBASEUNK || ia->ia_drq == DRQUNK)
+ return 0;
+
+ if (ia->ia_irq == IRQUNK) {
+ ia->ia_irq = isa_discoverintr(fdcforceintr, aux);
+ if (ia->ia_irq == IRQNONE)
+ goto out;
+
+ /* reset it again */
+ bus_io_write_1(bc, ioh, fdout, 0);
+ delay(100);
+ bus_io_write_1(bc, ioh, fdout, FDO_FRST);
+ }
+#endif
+
+ rv = 1;
+ ia->ia_iosize = FDC_NPORT;
+ ia->ia_msize = 0;
+
+ out:
+ bus_io_unmap(bc, ioh, FDC_NPORT);
+ return rv;
+}
+
+#ifdef NEWCONFIG
+/*
+ * XXX This is broken, and needs fixing. In general, the interface needs
+ * XXX to change.
+ */
+void
+fdcforceintr(aux)
+ void *aux;
+{
+ struct isa_attach_args *ia = aux;
+ int iobase = ia->ia_iobase;
+
+ /* the motor is off; this should generate an error with or
+ without a disk drive present */
+ out_fdc(bc, ioh, NE7CMD_SEEK);
+ out_fdc(bc, ioh, 0);
+ out_fdc(bc, ioh, 0);
+}
+#endif
+
+void
+fdcattach(parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct fdc_softc *fdc = (void *)self;
+ bus_chipset_tag_t bc;
+ bus_io_handle_t ioh;
+ struct isa_attach_args *ia = aux;
+ struct fdc_attach_args fa;
+ int type;
+
+ bc = ia->ia_bc;
+
+ /* Re-map the I/O space. */
+ if (bus_io_map(bc, ia->ia_iobase, FDC_NPORT, &ioh))
+ panic("fdcattach: couldn't map I/O ports");
+
+ fdc->sc_bc = bc;
+ fdc->sc_ioh = ioh;
+
+ fdc->sc_drq = ia->ia_drq;
+ fdc->sc_state = DEVIDLE;
+ TAILQ_INIT(&fdc->sc_drives);
+
+ printf("\n");
+
+#ifdef NEWCONFIG
+ at_setup_dmachan(fdc->sc_drq, FDC_MAXIOSIZE);
+ isa_establish(&fdc->sc_id, &fdc->sc_dev);
+#endif
+ fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
+ IPL_BIO, fdcintr, fdc, fdc->sc_dev.dv_xname);
+
+ /*
+ * The NVRAM info only tells us about the first two disks on the
+ * `primary' floppy controller.
+ */
+ if (fdc->sc_dev.dv_unit == 0)
+ type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */
+ else
+ type = -1;
+
+ /* physical limit: four drives per controller. */
+ for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
+ fa.fa_flags = 0;
+#if NFD > 0
+ if (type >= 0 && fa.fa_drive < 2)
+ fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname,
+ type, fa.fa_drive);
+ else
+#endif
+ fa.fa_deftype = NULL; /* unknown */
+ (void)config_found(self, (void *)&fa, fddprint);
+ }
+}
+
+/*
+ * Print the location of a disk/tape drive (called just before attaching the
+ * the drive). If `fdc' is not NULL, the drive was found but was not
+ * in the system config file; print the drive name as well.
+ * Return QUIET (config_find ignores this if the device was configured) to
+ * avoid printing `fdN not configured' messages.
+ */
+int
+fddprint(aux, fdc)
+ void *aux;
+ char *fdc;
+{
+ register struct fdc_attach_args *fa = aux;
+
+ if (!fdc)
+ printf(" drive %d", fa->fa_drive);
+ return QUIET;
+}
+
+int
+fdcresult(fdc)
+ struct fdc_softc *fdc;
+{
+ bus_chipset_tag_t bc = fdc->sc_bc;
+ bus_io_handle_t ioh = fdc->sc_ioh;
+ u_char i;
+ int j = 100000,
+ n = 0;
+
+ for (; j; j--) {
+ i = bus_io_read_1(bc, ioh, fdsts) &
+ (NE7_DIO | NE7_RQM | NE7_CB);
+ if (i == NE7_RQM)
+ return n;
+ if (i == (NE7_DIO | NE7_RQM | NE7_CB)) {
+ if (n >= sizeof(fdc->sc_status)) {
+ log(LOG_ERR, "fdcresult: overrun\n");
+ return -1;
+ }
+ fdc->sc_status[n++] = bus_io_read_1(bc, ioh, fddata);
+ }
+ }
+ log(LOG_ERR, "fdcresult: timeout\n");
+ return -1;
+}
+
+int
+out_fdc(bc, ioh, x)
+ bus_chipset_tag_t bc;
+ bus_io_handle_t ioh;
+ u_char x;
+{
+ int i = 100000;
+
+ while ((bus_io_read_1(bc, ioh, fdsts) & NE7_DIO) && i-- > 0);
+ if (i <= 0)
+ return -1;
+ while ((bus_io_read_1(bc, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0);
+ if (i <= 0)
+ return -1;
+ bus_io_write_1(bc, ioh, fddata, x);
+ return 0;
+}
+
+void
+fdcstart(fdc)
+ struct fdc_softc *fdc;
+{
+
+#ifdef DIAGNOSTIC
+ /* only got here if controller's drive queue was inactive; should
+ be in idle state */
+ if (fdc->sc_state != DEVIDLE) {
+ printf("fdcstart: not idle\n");
+ return;
+ }
+#endif
+ (void) fdcintr(fdc);
+}
+
+void
+fdcstatus(dv, n, s)
+ struct device *dv;
+ int n;
+ char *s;
+{
+ struct fdc_softc *fdc = (void *)dv->dv_parent;
+
+ if (n == 0) {
+ out_fdc(fdc->sc_bc, fdc->sc_ioh, NE7CMD_SENSEI);
+ (void) fdcresult(fdc);
+ n = 2;
+ }
+
+ printf("%s: %s", dv->dv_xname, s);
+
+ switch (n) {
+ case 0:
+ printf("\n");
+ break;
+ case 2:
+ printf(" (st0 %b cyl %d)\n",
+ fdc->sc_status[0], NE7_ST0BITS,
+ fdc->sc_status[1]);
+ break;
+ case 7:
+ printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n",
+ fdc->sc_status[0], NE7_ST0BITS,
+ fdc->sc_status[1], NE7_ST1BITS,
+ fdc->sc_status[2], NE7_ST2BITS,
+ fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]);
+ break;
+#ifdef DIAGNOSTIC
+ default:
+ printf("\nfdcstatus: weird size");
+ break;
+#endif
+ }
+}
+
+void
+fdcpseudointr(arg)
+ void *arg;
+{
+ int s;
+
+ /* Just ensure it has the right spl. */
+ s = splbio();
+ (void) fdcintr(arg);
+ splx(s);
+}
+
+int
+fdcintr(arg)
+ void *arg;
+{
+ struct fdc_softc *fdc = arg;
+
+#if NFD > 0
+ /* Will switch on device type, shortly. */
+ return (fdintr(fdc));
+#else
+ printf("fdcintr: got interrupt, but no devices!\n");
+#endif
+}
diff --git a/sys/dev/isa/fdlink.h b/sys/dev/isa/fdlink.h
new file mode 100644
index 00000000000..fc3c8d8476b
--- /dev/null
+++ b/sys/dev/isa/fdlink.h
@@ -0,0 +1,105 @@
+/* $OpenBSD: fdlink.h,v 1.1 1996/09/01 20:58:27 downsj Exp $ */
+
+/*-
+ * Copyright (c) 1993, 1994, 1995 Charles Hannum.
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Don Ahn.
+ *
+ * Portions Copyright (c) 1993, 1994 by
+ * jc@irbs.UUCP (John Capo)
+ * vak@zebub.msk.su (Serge Vakulenko)
+ * ache@astral.msk.su (Andrew A. Chernov)
+ * joerg_wunsch@uriah.sax.de (Joerg Wunsch)
+ *
+ * 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.
+ *
+ */
+
+/*
+ * The goo that binds the floppy controller to it's devices.
+ */
+
+enum fdc_state {
+ DEVIDLE = 0,
+ MOTORWAIT,
+ DOSEEK,
+ SEEKWAIT,
+ SEEKTIMEDOUT,
+ SEEKCOMPLETE,
+ DOIO,
+ IOCOMPLETE,
+ IOTIMEDOUT,
+ DORESET,
+ RESETCOMPLETE,
+ RESETTIMEDOUT,
+ DORECAL,
+ RECALWAIT,
+ RECALTIMEDOUT,
+ RECALCOMPLETE,
+};
+
+/* software state, per controller */
+struct fdc_softc {
+ struct device sc_dev; /* boilerplate */
+ struct isadev sc_id;
+ void *sc_ih;
+
+ bus_chipset_tag_t sc_bc; /* ISA chipset identifier */
+ bus_io_handle_t sc_ioh; /* ISA io handle */
+
+ int sc_drq;
+
+ struct fd_softc *sc_fd[4]; /* pointers to children */
+ TAILQ_HEAD(drivehead, fd_softc) sc_drives;
+ enum fdc_state sc_state;
+ int sc_errors; /* number of retries so far */
+ u_char sc_status[7]; /* copy of registers */
+};
+
+/*
+ * Arguments passed between fdcattach and f[dt]probe.
+ */
+struct fdc_attach_args {
+ int fa_drive;
+ int fa_flags;
+ struct fd_type *fa_deftype;
+};
+
+/* Functions from fdc.c. */
+int fdcresult __P((struct fdc_softc *fdc));
+int out_fdc __P((bus_chipset_tag_t bc, bus_io_handle_t ioh, u_char x));
+void fdcstart __P((struct fdc_softc *fdc));
+void fdcstatus __P((struct device *dv, int n, char *s));
+void fdcpseudointr __P((void *arg));
+
+/* Functions from fd.c. */
+struct fd_type *fd_nvtotype __P((char *, int, int));
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 21:02:12 +0000