1588 lines
39 KiB
C
1588 lines
39 KiB
C
/* $NetBSD: fd.c,v 1.54 2004/09/18 16:40:11 yamt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Charles M. Hannum.
|
|
*
|
|
* 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 NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*-
|
|
* 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.
|
|
*
|
|
* 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. 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
|
|
*/
|
|
|
|
/*
|
|
* Floppy formatting facilities merged from FreeBSD fd.c driver:
|
|
* Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp
|
|
* which carries the same copyright/redistribution notice as shown above with
|
|
* the addition of the following statement before the "Redistribution and
|
|
* use ..." clause:
|
|
*
|
|
* Copyright (c) 1993, 1994 by
|
|
* jc@irbs.UUCP (John Capo)
|
|
* vak@zebub.msk.su (Serge Vakulenko)
|
|
* ache@astral.msk.su (Andrew A. Chernov)
|
|
*
|
|
* Copyright (c) 1993, 1994, 1995 by
|
|
* joerg_wunsch@uriah.sax.de (Joerg Wunsch)
|
|
* dufault@hda.com (Peter Dufault)
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.54 2004/09/18 16:40:11 yamt Exp $");
|
|
|
|
#include "rnd.h"
|
|
#include "opt_ddb.h"
|
|
|
|
/*
|
|
* XXX This driver should be properly MI'd some day, but this allows us
|
|
* XXX to eliminate a lot of code duplication for now.
|
|
*/
|
|
#if !defined(alpha) && !defined(algor) && !defined(atari) && \
|
|
!defined(bebox) && !defined(evbmips) && !defined(i386) && \
|
|
!defined(prep) && !defined(sandpoint) && !defined(x86_64)
|
|
#error platform not supported by this driver, yet
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/file.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/device.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/disk.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/fdio.h>
|
|
#include <sys/conf.h>
|
|
#if NRND > 0
|
|
#include <sys/rnd.h>
|
|
#endif
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <dev/cons.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include "locators.h"
|
|
|
|
#if defined(atari)
|
|
/*
|
|
* On the atari, it is configured as fdcisa
|
|
*/
|
|
#define FDCCF_DRIVE FDCISACF_DRIVE
|
|
#define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT
|
|
|
|
#define fd_cd fdisa_cd
|
|
#endif /* atari */
|
|
|
|
#include <machine/intr.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
#include <dev/isa/isadmavar.h>
|
|
|
|
#include <dev/isa/fdreg.h>
|
|
#include <dev/isa/fdcvar.h>
|
|
|
|
#if defined(i386)
|
|
|
|
#include <dev/ic/mc146818reg.h> /* for NVRAM access */
|
|
#include <i386/isa/nvram.h>
|
|
|
|
#include "mca.h"
|
|
#if NMCA > 0
|
|
#include <machine/mca_machdep.h> /* for MCA_system */
|
|
#endif
|
|
|
|
#endif /* i386 */
|
|
|
|
#include <dev/isa/fdvar.h>
|
|
|
|
#define FDUNIT(dev) (minor(dev) / 8)
|
|
#define FDTYPE(dev) (minor(dev) % 8)
|
|
|
|
/* XXX misuse a flag to identify format operation */
|
|
#define B_FORMAT B_XXX
|
|
|
|
/* controller driver configuration */
|
|
int fdprint __P((void *, const char *));
|
|
|
|
#if NMCA > 0
|
|
/* MCA - specific entries */
|
|
const struct fd_type mca_fd_types[] = {
|
|
{ 18,2,36,2,0xff,0x0f,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette - XXX try 16ms step rate */
|
|
{ 9,2,18,2,0xff,0x4f,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette - XXX try 24ms step rate */
|
|
};
|
|
#endif /* NMCA > 0 */
|
|
|
|
/* The order of entries in the following table is important -- BEWARE! */
|
|
|
|
#if defined(atari)
|
|
const struct fd_type fd_types[] = {
|
|
{ 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */
|
|
{ 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */
|
|
{ 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */
|
|
};
|
|
#else
|
|
const struct fd_type fd_types[] = {
|
|
{ 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */
|
|
{ 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */
|
|
{ 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */
|
|
{ 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */
|
|
{ 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */
|
|
{ 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */
|
|
{ 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */
|
|
};
|
|
#endif /* defined(atari) */
|
|
|
|
void fdcfinishattach __P((struct device *));
|
|
int fdprobe __P((struct device *, struct cfdata *, void *));
|
|
void fdattach __P((struct device *, struct device *, void *));
|
|
|
|
extern struct cfdriver fd_cd;
|
|
|
|
#ifdef atari
|
|
CFATTACH_DECL(fdisa, sizeof(struct fd_softc),
|
|
fdprobe, fdattach, NULL, NULL);
|
|
#else
|
|
CFATTACH_DECL(fd, sizeof(struct fd_softc),
|
|
fdprobe, fdattach, NULL, NULL);
|
|
#endif
|
|
|
|
dev_type_open(fdopen);
|
|
dev_type_close(fdclose);
|
|
dev_type_read(fdread);
|
|
dev_type_write(fdwrite);
|
|
dev_type_ioctl(fdioctl);
|
|
dev_type_strategy(fdstrategy);
|
|
|
|
const struct bdevsw fd_bdevsw = {
|
|
fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK
|
|
};
|
|
|
|
const struct cdevsw fd_cdevsw = {
|
|
fdopen, fdclose, fdread, fdwrite, fdioctl,
|
|
nostop, notty, nopoll, nommap, nokqfilter, D_DISK
|
|
};
|
|
|
|
void fdgetdisklabel __P((struct fd_softc *));
|
|
int fd_get_parms __P((struct fd_softc *));
|
|
void fdstart __P((struct fd_softc *));
|
|
|
|
struct dkdriver fddkdriver = { fdstrategy };
|
|
|
|
#if defined(i386)
|
|
const struct fd_type *fd_nvtotype __P((char *, int, int));
|
|
#endif /* i386 */
|
|
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));
|
|
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));
|
|
void fdcretry __P((struct fdc_softc *fdc));
|
|
void fdfinish __P((struct fd_softc *fd, struct buf *bp));
|
|
__inline const struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t));
|
|
int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *));
|
|
|
|
void fd_mountroot_hook __P((struct device *));
|
|
|
|
/*
|
|
* Arguments passed between fdcattach and fdprobe.
|
|
*/
|
|
struct fdc_attach_args {
|
|
int fa_drive;
|
|
const 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;
|
|
const char *fdc;
|
|
{
|
|
register struct fdc_attach_args *fa = aux;
|
|
|
|
if (!fdc)
|
|
aprint_normal(" drive %d", fa->fa_drive);
|
|
return QUIET;
|
|
}
|
|
|
|
void
|
|
fdcattach(fdc)
|
|
struct fdc_softc *fdc;
|
|
{
|
|
callout_init(&fdc->sc_timo_ch);
|
|
callout_init(&fdc->sc_intr_ch);
|
|
|
|
fdc->sc_state = DEVIDLE;
|
|
TAILQ_INIT(&fdc->sc_drives);
|
|
|
|
fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq);
|
|
|
|
if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) {
|
|
printf("%s: can't reserve drq %d\n",
|
|
fdc->sc_dev.dv_xname, fdc->sc_drq);
|
|
return;
|
|
}
|
|
|
|
if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize,
|
|
BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
|
|
printf("%s: can't set up ISA DMA map\n",
|
|
fdc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
|
|
config_interrupts(&fdc->sc_dev, fdcfinishattach);
|
|
}
|
|
|
|
void
|
|
fdcfinishattach(self)
|
|
struct device *self;
|
|
{
|
|
struct fdc_softc *fdc = (void *)self;
|
|
bus_space_tag_t iot = fdc->sc_iot;
|
|
bus_space_handle_t ioh = fdc->sc_ioh;
|
|
struct fdc_attach_args fa;
|
|
#if defined(i386)
|
|
int type;
|
|
#endif
|
|
|
|
/*
|
|
* Reset the controller to get it into a known state. Not all
|
|
* probes necessarily need do this to discover the controller up
|
|
* front, so don't assume anything.
|
|
*/
|
|
|
|
bus_space_write_1(iot, ioh, fdout, 0);
|
|
delay(100);
|
|
bus_space_write_1(iot, ioh, fdout, FDO_FRST);
|
|
|
|
/* see if it can handle a command */
|
|
if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) {
|
|
printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
out_fdc(iot, ioh, 0xdf);
|
|
out_fdc(iot, ioh, 2);
|
|
|
|
#if defined(i386)
|
|
/*
|
|
* 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;
|
|
#endif /* i386 */
|
|
|
|
/* physical limit: four drives per controller. */
|
|
fdc->sc_state = PROBING;
|
|
for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
|
|
if (fdc->sc_known) {
|
|
if (fdc->sc_present & (1 << fa.fa_drive)) {
|
|
fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive];
|
|
config_found(&fdc->sc_dev, (void *)&fa,
|
|
fdprint);
|
|
}
|
|
} else {
|
|
#if defined(i386)
|
|
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 */
|
|
#elif defined(atari)
|
|
/*
|
|
* Atari has a different ordening, defaults to 1.44
|
|
*/
|
|
fa.fa_deftype = &fd_types[2];
|
|
#else
|
|
/*
|
|
* Default to 1.44MB on Alpha and BeBox. How do we tell
|
|
* on these platforms?
|
|
*/
|
|
fa.fa_deftype = &fd_types[0];
|
|
#endif /* i386 */
|
|
(void)config_found(&fdc->sc_dev, (void *)&fa, fdprint);
|
|
}
|
|
}
|
|
fdc->sc_state = DEVIDLE;
|
|
}
|
|
|
|
int
|
|
fdprobe(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct fdc_softc *fdc = (void *)parent;
|
|
struct cfdata *cf = match;
|
|
struct fdc_attach_args *fa = aux;
|
|
int drive = fa->fa_drive;
|
|
bus_space_tag_t iot = fdc->sc_iot;
|
|
bus_space_handle_t ioh = fdc->sc_ioh;
|
|
int n;
|
|
int s;
|
|
|
|
if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT &&
|
|
cf->cf_loc[FDCCF_DRIVE] != drive)
|
|
return 0;
|
|
/*
|
|
* XXX
|
|
* This is to work around some odd interactions between this driver
|
|
* and SMC Ethernet cards.
|
|
*/
|
|
if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2)
|
|
return 0;
|
|
|
|
/* Use PNP information if available */
|
|
if (fdc->sc_known)
|
|
return 1;
|
|
|
|
s = splbio();
|
|
/* toss any interrupt status */
|
|
for (n = 0; n < 4; n++) {
|
|
out_fdc(iot, ioh, NE7CMD_SENSEI);
|
|
(void) fdcresult(fdc);
|
|
}
|
|
/* select drive and turn on motor */
|
|
bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive));
|
|
/* wait for motor to spin up */
|
|
(void) tsleep(fdc, PWAIT, "fdprobe1", hz / 4);
|
|
out_fdc(iot, ioh, NE7CMD_RECAL);
|
|
out_fdc(iot, ioh, drive);
|
|
/* wait for recalibrate, up to 2s */
|
|
if (tsleep(fdc, PWAIT, "fdprobe2", 2 * hz) != EWOULDBLOCK) {
|
|
#ifdef FD_DEBUG
|
|
/* XXX */
|
|
printf("fdprobe: got intr\n");
|
|
#endif
|
|
}
|
|
out_fdc(iot, ioh, NE7CMD_SENSEI);
|
|
n = fdcresult(fdc);
|
|
#ifdef FD_DEBUG
|
|
{
|
|
int i;
|
|
printf("fdprobe: status");
|
|
for (i = 0; i < n; i++)
|
|
printf(" %x", fdc->sc_status[i]);
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
/* turn off motor */
|
|
bus_space_write_1(iot, ioh, fdout, FDO_FRST);
|
|
splx(s);
|
|
|
|
#if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */
|
|
if (n != 2 || (fdc->sc_status[1] != 0))
|
|
return 0;
|
|
#else
|
|
if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20)
|
|
return 0;
|
|
#endif /* bebox */
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Controller is working, and drive responded. Attach it.
|
|
*/
|
|
void
|
|
fdattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct fdc_softc *fdc = (void *)parent;
|
|
struct fd_softc *fd = (void *)self;
|
|
struct fdc_attach_args *fa = aux;
|
|
const struct fd_type *type = fa->fa_deftype;
|
|
int drive = fa->fa_drive;
|
|
|
|
callout_init(&fd->sc_motoron_ch);
|
|
callout_init(&fd->sc_motoroff_ch);
|
|
|
|
/* XXX Allow `flags' to override device type? */
|
|
|
|
if (type)
|
|
printf(": %s, %d cyl, %d head, %d sec\n", type->name,
|
|
type->cyls, type->heads, type->sectrac);
|
|
else
|
|
printf(": density unknown\n");
|
|
|
|
bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER);
|
|
fd->sc_cylin = -1;
|
|
fd->sc_drive = drive;
|
|
fd->sc_deftype = type;
|
|
fdc->sc_fd[drive] = fd;
|
|
|
|
/*
|
|
* Initialize and attach the disk structure.
|
|
*/
|
|
fd->sc_dk.dk_name = fd->sc_dev.dv_xname;
|
|
fd->sc_dk.dk_driver = &fddkdriver;
|
|
disk_attach(&fd->sc_dk);
|
|
|
|
/*
|
|
* Establish a mountroot hook.
|
|
*/
|
|
mountroothook_establish(fd_mountroot_hook, &fd->sc_dev);
|
|
|
|
/* Needed to power off if the motor is on when we halt. */
|
|
fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd);
|
|
|
|
#if NRND > 0
|
|
rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname,
|
|
RND_TYPE_DISK, 0);
|
|
#endif
|
|
}
|
|
|
|
#if defined(i386)
|
|
/*
|
|
* Translate nvram type into internal data structure. Return NULL for
|
|
* none/unknown/unusable.
|
|
*/
|
|
const struct fd_type *
|
|
fd_nvtotype(fdc, nvraminfo, drive)
|
|
char *fdc;
|
|
int nvraminfo, drive;
|
|
{
|
|
int type;
|
|
|
|
type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0;
|
|
switch (type) {
|
|
case NVRAM_DISKETTE_NONE:
|
|
return NULL;
|
|
case NVRAM_DISKETTE_12M:
|
|
return &fd_types[1];
|
|
case NVRAM_DISKETTE_TYPE5:
|
|
case NVRAM_DISKETTE_TYPE6:
|
|
/* XXX We really ought to handle 2.88MB format. */
|
|
case NVRAM_DISKETTE_144M:
|
|
#if NMCA > 0
|
|
if (MCA_system)
|
|
return &mca_fd_types[0];
|
|
else
|
|
#endif /* NMCA > 0 */
|
|
return &fd_types[0];
|
|
case NVRAM_DISKETTE_360K:
|
|
return &fd_types[3];
|
|
case NVRAM_DISKETTE_720K:
|
|
#if NMCA > 0
|
|
if (MCA_system)
|
|
return &mca_fd_types[1];
|
|
else
|
|
#endif /* NMCA > 0 */
|
|
return &fd_types[4];
|
|
default:
|
|
printf("%s: drive %d: unknown device type 0x%x\n",
|
|
fdc, drive, type);
|
|
return NULL;
|
|
}
|
|
}
|
|
#endif /* i386 */
|
|
|
|
__inline const struct fd_type *
|
|
fd_dev_to_type(fd, dev)
|
|
struct fd_softc *fd;
|
|
dev_t dev;
|
|
{
|
|
u_int type = FDTYPE(dev);
|
|
|
|
if (type > (sizeof(fd_types) / sizeof(fd_types[0])))
|
|
return NULL;
|
|
return type ? &fd_types[type - 1] : fd->sc_deftype;
|
|
}
|
|
|
|
void
|
|
fdstrategy(bp)
|
|
register struct buf *bp; /* IO operation to perform */
|
|
{
|
|
struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev));
|
|
int sz;
|
|
int s;
|
|
|
|
/* Valid unit, controller, and request? */
|
|
if (bp->b_blkno < 0 ||
|
|
((bp->b_bcount % FDC_BSIZE) != 0 &&
|
|
(bp->b_flags & B_FORMAT) == 0)) {
|
|
bp->b_error = EINVAL;
|
|
goto bad;
|
|
}
|
|
|
|
/* If it's a null transfer, return immediately. */
|
|
if (bp->b_bcount == 0)
|
|
goto done;
|
|
|
|
sz = howmany(bp->b_bcount, FDC_BSIZE);
|
|
|
|
if (bp->b_blkno + sz > fd->sc_type->size) {
|
|
sz = fd->sc_type->size - bp->b_blkno;
|
|
if (sz == 0) {
|
|
/* If exactly at end of disk, return EOF. */
|
|
goto done;
|
|
}
|
|
if (sz < 0) {
|
|
/* If past end of disk, return EINVAL. */
|
|
bp->b_error = EINVAL;
|
|
goto bad;
|
|
}
|
|
/* Otherwise, truncate request. */
|
|
bp->b_bcount = sz << DEV_BSHIFT;
|
|
}
|
|
|
|
bp->b_rawblkno = bp->b_blkno;
|
|
bp->b_cylinder =
|
|
bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl;
|
|
|
|
#ifdef FD_DEBUG
|
|
printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n",
|
|
bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz);
|
|
#endif
|
|
|
|
/* Queue transfer on drive, activate drive and controller if idle. */
|
|
s = splbio();
|
|
BUFQ_PUT(&fd->sc_q, bp);
|
|
callout_stop(&fd->sc_motoroff_ch); /* a good idea */
|
|
if (fd->sc_active == 0)
|
|
fdstart(fd);
|
|
#ifdef DIAGNOSTIC
|
|
else {
|
|
struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent;
|
|
if (fdc->sc_state == DEVIDLE) {
|
|
printf("fdstrategy: controller inactive\n");
|
|
fdcstart(fdc);
|
|
}
|
|
}
|
|
#endif
|
|
splx(s);
|
|
return;
|
|
|
|
bad:
|
|
bp->b_flags |= B_ERROR;
|
|
done:
|
|
/* Toss transfer; we're done early. */
|
|
bp->b_resid = bp->b_bcount;
|
|
biodone(bp);
|
|
}
|
|
|
|
void
|
|
fdstart(fd)
|
|
struct fd_softc *fd;
|
|
{
|
|
struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent;
|
|
int active = !TAILQ_EMPTY(&fdc->sc_drives);
|
|
|
|
/* Link into controller queue. */
|
|
fd->sc_active = 1;
|
|
TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain);
|
|
|
|
/* If controller not already active, start it. */
|
|
if (!active)
|
|
fdcstart(fdc);
|
|
}
|
|
|
|
void
|
|
fdfinish(fd, bp)
|
|
struct fd_softc *fd;
|
|
struct buf *bp;
|
|
{
|
|
struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent;
|
|
|
|
/*
|
|
* Move this drive to the end of the queue to give others a `fair'
|
|
* chance. We only force a switch if N operations are completed while
|
|
* another drive is waiting to be serviced, since there is a long motor
|
|
* startup delay whenever we switch.
|
|
*/
|
|
(void)BUFQ_GET(&fd->sc_q);
|
|
if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) {
|
|
fd->sc_ops = 0;
|
|
TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain);
|
|
if (BUFQ_PEEK(&fd->sc_q) != NULL)
|
|
TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain);
|
|
else
|
|
fd->sc_active = 0;
|
|
}
|
|
bp->b_resid = fd->sc_bcount;
|
|
fd->sc_skip = 0;
|
|
|
|
#if NRND > 0
|
|
rnd_add_uint32(&fd->rnd_source, bp->b_blkno);
|
|
#endif
|
|
|
|
biodone(bp);
|
|
/* turn off motor 5s from now */
|
|
callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd);
|
|
fdc->sc_state = DEVIDLE;
|
|
}
|
|
|
|
int
|
|
fdread(dev, uio, flags)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
|
|
return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio));
|
|
}
|
|
|
|
int
|
|
fdwrite(dev, uio, flags)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
|
|
return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio));
|
|
}
|
|
|
|
void
|
|
fd_set_motor(fdc, reset)
|
|
struct fdc_softc *fdc;
|
|
int reset;
|
|
{
|
|
struct fd_softc *fd;
|
|
u_char status;
|
|
int n;
|
|
|
|
if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL)
|
|
status = fd->sc_drive;
|
|
else
|
|
status = 0;
|
|
if (!reset)
|
|
status |= FDO_FRST | FDO_FDMAEN;
|
|
for (n = 0; n < 4; n++)
|
|
if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR))
|
|
status |= FDO_MOEN(n);
|
|
bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status);
|
|
}
|
|
|
|
void
|
|
fd_motor_off(arg)
|
|
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);
|
|
}
|
|
|
|
void
|
|
fd_motor_on(arg)
|
|
void *arg;
|
|
{
|
|
struct fd_softc *fd = arg;
|
|
struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent;
|
|
int s;
|
|
|
|
s = splbio();
|
|
fd->sc_flags &= ~FD_MOTOR_WAIT;
|
|
if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT))
|
|
(void) fdcintr(fdc);
|
|
splx(s);
|
|
}
|
|
|
|
int
|
|
fdcresult(fdc)
|
|
struct fdc_softc *fdc;
|
|
{
|
|
bus_space_tag_t iot = fdc->sc_iot;
|
|
bus_space_handle_t ioh = fdc->sc_ioh;
|
|
u_char i;
|
|
u_int j = 100000,
|
|
n = 0;
|
|
|
|
for (; j; j--) {
|
|
i = bus_space_read_1(iot, 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_space_read_1(iot, ioh, fddata);
|
|
}
|
|
delay(10);
|
|
}
|
|
log(LOG_ERR, "fdcresult: timeout\n");
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
out_fdc(iot, ioh, x)
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
u_char x;
|
|
{
|
|
u_char i;
|
|
u_int j = 100000;
|
|
|
|
for (; j; j--) {
|
|
i = bus_space_read_1(iot, ioh, fdsts) &
|
|
(NE7_DIO | NE7_RQM);
|
|
if (i == NE7_RQM) {
|
|
bus_space_write_1(iot, ioh, fddata, x);
|
|
return 0;
|
|
}
|
|
delay(10);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
fdopen(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct fd_softc *fd;
|
|
const struct fd_type *type;
|
|
|
|
fd = device_lookup(&fd_cd, FDUNIT(dev));
|
|
if (fd == NULL)
|
|
return (ENXIO);
|
|
|
|
type = fd_dev_to_type(fd, dev);
|
|
if (type == NULL)
|
|
return ENXIO;
|
|
|
|
if ((fd->sc_flags & FD_OPEN) != 0 &&
|
|
memcmp(fd->sc_type, type, sizeof(*type)))
|
|
return EBUSY;
|
|
|
|
fd->sc_type_copy = *type;
|
|
fd->sc_type = &fd->sc_type_copy;
|
|
fd->sc_cylin = -1;
|
|
fd->sc_flags |= FD_OPEN;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fdclose(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev));
|
|
|
|
fd->sc_flags &= ~FD_OPEN;
|
|
fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT);
|
|
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;
|
|
char bits[64];
|
|
|
|
if (n == 0) {
|
|
out_fdc(fdc->sc_iot, 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 %s cyl %d)\n",
|
|
bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS,
|
|
bits, sizeof(bits)), fdc->sc_status[1]);
|
|
break;
|
|
case 7:
|
|
printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0],
|
|
NE7_ST0BITS, bits, sizeof(bits)));
|
|
printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1],
|
|
NE7_ST1BITS, bits, sizeof(bits)));
|
|
printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2],
|
|
NE7_ST2BITS, bits, sizeof(bits)));
|
|
printf(" cyl %d head %d sec %d)\n",
|
|
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;
|
|
{
|
|
struct fdc_softc *fdc = arg;
|
|
struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives);
|
|
int s;
|
|
|
|
s = splbio();
|
|
#ifdef DEBUG
|
|
log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state);
|
|
#endif
|
|
fdcstatus(&fd->sc_dev, 0, "timeout");
|
|
|
|
if (BUFQ_PEEK(&fd->sc_q) != NULL)
|
|
fdc->sc_state++;
|
|
else
|
|
fdc->sc_state = DEVIDLE;
|
|
|
|
(void) fdcintr(fdc);
|
|
splx(s);
|
|
}
|
|
|
|
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;
|
|
#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;
|
|
|
|
if (fdc->sc_state == PROBING) {
|
|
#ifdef DEBUG
|
|
printf("fdcintr: got probe interrupt\n");
|
|
#endif
|
|
wakeup(fdc);
|
|
return 1;
|
|
}
|
|
|
|
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;
|
|
return 1;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
fd->sc_dk.dk_seek++;
|
|
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,
|
|
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, fdcpseudointr, 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 %d nblks %d\n",
|
|
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, (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;
|
|
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, fdcpseudointr, 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;
|
|
}
|
|
#ifdef DIAGNOSTIC
|
|
panic("fdcintr: impossible");
|
|
#endif
|
|
#undef st0
|
|
#undef cyl
|
|
}
|
|
|
|
void
|
|
fdcretry(fdc)
|
|
struct fdc_softc *fdc;
|
|
{
|
|
char bits[64];
|
|
struct fd_softc *fd;
|
|
struct buf *bp;
|
|
|
|
fd = TAILQ_FIRST(&fdc->sc_drives);
|
|
bp = BUFQ_PEEK(&fd->sc_q);
|
|
|
|
if (fd->sc_opts & FDOPT_NORETRY)
|
|
goto fail;
|
|
switch (fdc->sc_errors) {
|
|
case 0:
|
|
/* try again */
|
|
fdc->sc_state = DOSEEK;
|
|
break;
|
|
|
|
case 1: case 2: case 3:
|
|
/* didn't work; try recalibrating */
|
|
fdc->sc_state = DORECAL;
|
|
break;
|
|
|
|
case 4:
|
|
/* still no go; reset the bastard */
|
|
fdc->sc_state = DORESET;
|
|
break;
|
|
|
|
default:
|
|
fail:
|
|
if ((fd->sc_opts & FDOPT_SILENT) == 0) {
|
|
diskerr(bp, "fd", "hard error", LOG_PRINTF,
|
|
fd->sc_skip / FDC_BSIZE,
|
|
(struct disklabel *)NULL);
|
|
|
|
printf(" (st0 %s",
|
|
bitmask_snprintf(fdc->sc_status[0],
|
|
NE7_ST0BITS, bits,
|
|
sizeof(bits)));
|
|
printf(" st1 %s",
|
|
bitmask_snprintf(fdc->sc_status[1],
|
|
NE7_ST1BITS, bits,
|
|
sizeof(bits)));
|
|
printf(" st2 %s",
|
|
bitmask_snprintf(fdc->sc_status[2],
|
|
NE7_ST2BITS, bits,
|
|
sizeof(bits)));
|
|
printf(" cyl %d head %d sec %d)\n",
|
|
fdc->sc_status[3],
|
|
fdc->sc_status[4],
|
|
fdc->sc_status[5]);
|
|
}
|
|
|
|
bp->b_flags |= B_ERROR;
|
|
bp->b_error = EIO;
|
|
fdfinish(fd, bp);
|
|
}
|
|
fdc->sc_errors++;
|
|
}
|
|
|
|
int
|
|
fdioctl(dev, cmd, addr, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t addr;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev));
|
|
struct fdformat_parms *form_parms;
|
|
struct fdformat_cmd *form_cmd;
|
|
struct ne7_fd_formb *fd_formb;
|
|
struct disklabel buffer;
|
|
int error;
|
|
unsigned int scratch;
|
|
int il[FD_MAX_NSEC + 1];
|
|
register int i, j;
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
struct disklabel newlabel;
|
|
#endif
|
|
|
|
switch (cmd) {
|
|
case DIOCGDINFO:
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
case ODIOCGDINFO:
|
|
#endif
|
|
memset(&buffer, 0, sizeof(buffer));
|
|
|
|
buffer.d_secpercyl = fd->sc_type->seccyl;
|
|
buffer.d_type = DTYPE_FLOPPY;
|
|
buffer.d_secsize = FDC_BSIZE;
|
|
|
|
if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL)
|
|
return EINVAL;
|
|
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
if (cmd == ODIOCGDINFO) {
|
|
if (buffer.d_npartitions > OLDMAXPARTITIONS)
|
|
return ENOTTY;
|
|
memcpy(addr, &buffer, sizeof (struct olddisklabel));
|
|
} else
|
|
#endif
|
|
*(struct disklabel *)addr = buffer;
|
|
return 0;
|
|
|
|
case DIOCWLABEL:
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
/* XXX do something */
|
|
return 0;
|
|
|
|
case DIOCWDINFO:
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
case ODIOCWDINFO:
|
|
#endif
|
|
{
|
|
struct disklabel *lp;
|
|
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
if (cmd == ODIOCWDINFO) {
|
|
memset(&newlabel, 0, sizeof newlabel);
|
|
memcpy(&newlabel, addr, sizeof (struct olddisklabel));
|
|
lp = &newlabel;
|
|
} else
|
|
#endif
|
|
lp = (struct disklabel *)addr;
|
|
|
|
error = setdisklabel(&buffer, lp, 0, NULL);
|
|
if (error)
|
|
return error;
|
|
|
|
error = writedisklabel(dev, fdstrategy, &buffer, NULL);
|
|
return error;
|
|
}
|
|
|
|
case FDIOCGETFORMAT:
|
|
form_parms = (struct fdformat_parms *)addr;
|
|
form_parms->fdformat_version = FDFORMAT_VERSION;
|
|
form_parms->nbps = 128 * (1 << fd->sc_type->secsize);
|
|
form_parms->ncyl = fd->sc_type->cyls;
|
|
form_parms->nspt = fd->sc_type->sectrac;
|
|
form_parms->ntrk = fd->sc_type->heads;
|
|
form_parms->stepspercyl = fd->sc_type->step;
|
|
form_parms->gaplen = fd->sc_type->gap2;
|
|
form_parms->fillbyte = fd->sc_type->fillbyte;
|
|
form_parms->interleave = fd->sc_type->interleave;
|
|
switch (fd->sc_type->rate) {
|
|
case FDC_500KBPS:
|
|
form_parms->xfer_rate = 500 * 1024;
|
|
break;
|
|
case FDC_300KBPS:
|
|
form_parms->xfer_rate = 300 * 1024;
|
|
break;
|
|
case FDC_250KBPS:
|
|
form_parms->xfer_rate = 250 * 1024;
|
|
break;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
return 0;
|
|
|
|
case FDIOCSETFORMAT:
|
|
if((flag & FWRITE) == 0)
|
|
return EBADF; /* must be opened for writing */
|
|
form_parms = (struct fdformat_parms *)addr;
|
|
if (form_parms->fdformat_version != FDFORMAT_VERSION)
|
|
return EINVAL; /* wrong version of formatting prog */
|
|
|
|
scratch = form_parms->nbps >> 7;
|
|
if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 ||
|
|
scratch & ~(1 << (ffs(scratch)-1)))
|
|
/* not a power-of-two multiple of 128 */
|
|
return EINVAL;
|
|
|
|
switch (form_parms->xfer_rate) {
|
|
case 500 * 1024:
|
|
fd->sc_type->rate = FDC_500KBPS;
|
|
break;
|
|
case 300 * 1024:
|
|
fd->sc_type->rate = FDC_300KBPS;
|
|
break;
|
|
case 250 * 1024:
|
|
fd->sc_type->rate = FDC_250KBPS;
|
|
break;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
|
|
if (form_parms->nspt > FD_MAX_NSEC ||
|
|
form_parms->fillbyte > 0xff ||
|
|
form_parms->interleave > 0xff)
|
|
return EINVAL;
|
|
fd->sc_type->sectrac = form_parms->nspt;
|
|
if (form_parms->ntrk != 2 && form_parms->ntrk != 1)
|
|
return EINVAL;
|
|
fd->sc_type->heads = form_parms->ntrk;
|
|
fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk;
|
|
fd->sc_type->secsize = ffs(scratch)-1;
|
|
fd->sc_type->gap2 = form_parms->gaplen;
|
|
fd->sc_type->cyls = form_parms->ncyl;
|
|
fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl *
|
|
form_parms->nbps / DEV_BSIZE;
|
|
fd->sc_type->step = form_parms->stepspercyl;
|
|
fd->sc_type->fillbyte = form_parms->fillbyte;
|
|
fd->sc_type->interleave = form_parms->interleave;
|
|
return 0;
|
|
|
|
case FDIOCFORMAT_TRACK:
|
|
if((flag & FWRITE) == 0)
|
|
return EBADF; /* must be opened for writing */
|
|
form_cmd = (struct fdformat_cmd *)addr;
|
|
if (form_cmd->formatcmd_version != FDFORMAT_VERSION)
|
|
return EINVAL; /* wrong version of formatting prog */
|
|
|
|
if (form_cmd->head >= fd->sc_type->heads ||
|
|
form_cmd->cylinder >= fd->sc_type->cyls) {
|
|
return EINVAL;
|
|
}
|
|
|
|
fd_formb = malloc(sizeof(struct ne7_fd_formb),
|
|
M_TEMP, M_NOWAIT);
|
|
if (fd_formb == 0)
|
|
return ENOMEM;
|
|
|
|
fd_formb->head = form_cmd->head;
|
|
fd_formb->cyl = form_cmd->cylinder;
|
|
fd_formb->transfer_rate = fd->sc_type->rate;
|
|
fd_formb->fd_formb_secshift = fd->sc_type->secsize;
|
|
fd_formb->fd_formb_nsecs = fd->sc_type->sectrac;
|
|
fd_formb->fd_formb_gaplen = fd->sc_type->gap2;
|
|
fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte;
|
|
|
|
memset(il, 0, sizeof il);
|
|
for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) {
|
|
while (il[(j%fd_formb->fd_formb_nsecs)+1])
|
|
j++;
|
|
il[(j%fd_formb->fd_formb_nsecs)+1] = i;
|
|
j += fd->sc_type->interleave;
|
|
}
|
|
for (i = 0; i < fd_formb->fd_formb_nsecs; i++) {
|
|
fd_formb->fd_formb_cylno(i) = form_cmd->cylinder;
|
|
fd_formb->fd_formb_headno(i) = form_cmd->head;
|
|
fd_formb->fd_formb_secno(i) = il[i+1];
|
|
fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize;
|
|
}
|
|
|
|
error = fdformat(dev, fd_formb, p);
|
|
free(fd_formb, M_TEMP);
|
|
return error;
|
|
|
|
case FDIOCGETOPTS: /* get drive options */
|
|
*(int *)addr = fd->sc_opts;
|
|
return 0;
|
|
|
|
case FDIOCSETOPTS: /* set drive options */
|
|
fd->sc_opts = *(int *)addr;
|
|
return 0;
|
|
|
|
default:
|
|
return ENOTTY;
|
|
}
|
|
|
|
#ifdef DIAGNOSTIC
|
|
panic("fdioctl: impossible");
|
|
#endif
|
|
}
|
|
|
|
int
|
|
fdformat(dev, finfo, p)
|
|
dev_t dev;
|
|
struct ne7_fd_formb *finfo;
|
|
struct proc *p;
|
|
{
|
|
int rv = 0, s;
|
|
struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev));
|
|
struct fd_type *type = fd->sc_type;
|
|
struct buf *bp;
|
|
|
|
/* set up a buffer header for fdstrategy() */
|
|
s = splbio();
|
|
bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT);
|
|
splx(s);
|
|
if (bp == NULL)
|
|
return ENOBUFS;
|
|
|
|
memset((void *)bp, 0, sizeof(struct buf));
|
|
BUF_INIT(bp);
|
|
bp->b_flags = B_BUSY | B_PHYS | B_FORMAT;
|
|
bp->b_proc = p;
|
|
bp->b_dev = dev;
|
|
|
|
/*
|
|
* calculate a fake blkno, so fdstrategy() would initiate a
|
|
* seek to the requested cylinder
|
|
*/
|
|
bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads)
|
|
+ finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE;
|
|
|
|
bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs;
|
|
bp->b_data = (caddr_t)finfo;
|
|
|
|
#ifdef DEBUG
|
|
printf("fdformat: blkno %" PRIx64 " count %x\n",
|
|
bp->b_blkno, bp->b_bcount);
|
|
#endif
|
|
|
|
/* now do the format */
|
|
fdstrategy(bp);
|
|
|
|
/* ...and wait for it to complete */
|
|
rv = biowait(bp);
|
|
s = splbio();
|
|
pool_put(&bufpool, bp);
|
|
splx(s);
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Mountroot hook: prompt the user to enter the root file system
|
|
* floppy.
|
|
*/
|
|
void
|
|
fd_mountroot_hook(dev)
|
|
struct device *dev;
|
|
{
|
|
int c;
|
|
|
|
printf("Insert filesystem floppy and press return.");
|
|
cnpollc(1);
|
|
for (;;) {
|
|
c = cngetc();
|
|
if ((c == '\r') || (c == '\n')) {
|
|
printf("\n");
|
|
break;
|
|
}
|
|
}
|
|
cnpollc(0);
|
|
}
|