543 lines
13 KiB
C
543 lines
13 KiB
C
/* $NetBSD: ofdisk.c,v 1.54 2020/01/26 21:43:52 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
|
|
* Copyright (C) 1995, 1996 TooLs GmbH.
|
|
* All rights reserved.
|
|
*
|
|
* 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 TooLs GmbH.
|
|
* 4. The name of TooLs GmbH may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: ofdisk.c,v 1.54 2020/01/26 21:43:52 thorpej Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/disk.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
|
|
#include <dev/ofw/openfirm.h>
|
|
|
|
struct ofdisk_softc {
|
|
device_t sc_dev;
|
|
int sc_phandle;
|
|
int sc_unit;
|
|
int sc_flags;
|
|
struct disk sc_dk;
|
|
int sc_ihandle;
|
|
u_long max_transfer;
|
|
};
|
|
|
|
/* sc_flags */
|
|
#define OFDF_ISFLOPPY 0x01 /* we are a floppy drive */
|
|
|
|
#define OFDISK_FLOPPY_P(of) ((of)->sc_flags & OFDF_ISFLOPPY)
|
|
|
|
static int ofdisk_match (device_t, cfdata_t, void *);
|
|
static void ofdisk_attach (device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(ofdisk, sizeof(struct ofdisk_softc),
|
|
ofdisk_match, ofdisk_attach, NULL, NULL);
|
|
|
|
extern struct cfdriver ofdisk_cd;
|
|
|
|
dev_type_open(ofdisk_open);
|
|
dev_type_close(ofdisk_close);
|
|
dev_type_read(ofdisk_read);
|
|
dev_type_write(ofdisk_write);
|
|
dev_type_ioctl(ofdisk_ioctl);
|
|
dev_type_strategy(ofdisk_strategy);
|
|
dev_type_dump(ofdisk_dump);
|
|
dev_type_size(ofdisk_size);
|
|
|
|
const struct bdevsw ofdisk_bdevsw = {
|
|
.d_open = ofdisk_open,
|
|
.d_close = ofdisk_close,
|
|
.d_strategy = ofdisk_strategy,
|
|
.d_ioctl = ofdisk_ioctl,
|
|
.d_dump = ofdisk_dump,
|
|
.d_psize = ofdisk_size,
|
|
.d_discard = nodiscard,
|
|
.d_flag = D_DISK
|
|
};
|
|
|
|
const struct cdevsw ofdisk_cdevsw = {
|
|
.d_open = ofdisk_open,
|
|
.d_close = ofdisk_close,
|
|
.d_read = ofdisk_read,
|
|
.d_write = ofdisk_write,
|
|
.d_ioctl = ofdisk_ioctl,
|
|
.d_stop = nostop,
|
|
.d_tty = notty,
|
|
.d_poll = nopoll,
|
|
.d_mmap = nommap,
|
|
.d_kqfilter = nokqfilter,
|
|
.d_discard = nodiscard,
|
|
.d_flag = D_DISK
|
|
};
|
|
|
|
static void ofminphys(struct buf *);
|
|
|
|
struct dkdriver ofdisk_dkdriver = {
|
|
.d_strategy = ofdisk_strategy,
|
|
.d_minphys = ofminphys
|
|
};
|
|
|
|
void ofdisk_getdefaultlabel (struct ofdisk_softc *, struct disklabel *);
|
|
void ofdisk_getdisklabel (dev_t);
|
|
|
|
static int
|
|
ofdisk_match(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct ofbus_attach_args *oba = aux;
|
|
char type[8];
|
|
int l;
|
|
|
|
if (strcmp(oba->oba_busname, "ofw"))
|
|
return (0);
|
|
if ((l = OF_getprop(oba->oba_phandle, "device_type", type,
|
|
sizeof type - 1)) < 0)
|
|
return 0;
|
|
if (l >= sizeof type)
|
|
return 0;
|
|
type[l] = 0;
|
|
return strcmp(type, "block") == 0 || strcmp(type, "scsi") == 0;
|
|
}
|
|
|
|
static void
|
|
ofdisk_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct ofdisk_softc *of = device_private(self);
|
|
struct ofbus_attach_args *oba = aux;
|
|
char child[64];
|
|
int l;
|
|
|
|
of->sc_dev = self;
|
|
if ((l = OF_getprop(oba->oba_phandle, "name", child,
|
|
sizeof child - 1)) < 0)
|
|
panic("device without name?");
|
|
if (l >= sizeof child)
|
|
l = sizeof child - 1;
|
|
child[l] = 0;
|
|
|
|
of->sc_flags = 0;
|
|
of->sc_phandle = oba->oba_phandle;
|
|
of->sc_unit = oba->oba_unit;
|
|
of->sc_ihandle = 0;
|
|
disk_init(&of->sc_dk, device_xname(of->sc_dev), &ofdisk_dkdriver);
|
|
disk_attach(&of->sc_dk);
|
|
printf("\n");
|
|
|
|
if (strcmp(child, "floppy") == 0)
|
|
of->sc_flags |= OFDF_ISFLOPPY;
|
|
else {
|
|
/* Discover wedges on this disk. */
|
|
dkwedge_discover(&of->sc_dk);
|
|
}
|
|
}
|
|
|
|
int
|
|
ofdisk_open(dev_t dev, int flags, int fmt, struct lwp *lwp)
|
|
{
|
|
struct ofdisk_softc *of;
|
|
char path[256];
|
|
int error, l, part;
|
|
|
|
of = device_lookup_private(&ofdisk_cd, DISKUNIT(dev));
|
|
if (of == NULL)
|
|
return ENXIO;
|
|
|
|
part = DISKPART(dev);
|
|
|
|
mutex_enter(&of->sc_dk.dk_openlock);
|
|
|
|
/*
|
|
* If there are wedges, and this is not RAW_PART, then we
|
|
* need to fail.
|
|
*/
|
|
if (of->sc_dk.dk_nwedges != 0 && part != RAW_PART) {
|
|
error = EBUSY;
|
|
goto bad1;
|
|
}
|
|
|
|
if (!of->sc_ihandle) {
|
|
if ((l = OF_package_to_path(of->sc_phandle, path,
|
|
sizeof path - 3)) < 0 ||
|
|
l >= sizeof path - 3) {
|
|
error = ENXIO;
|
|
goto bad1;
|
|
}
|
|
path[l] = 0;
|
|
|
|
/*
|
|
* XXX This is for the benefit of SCSI/IDE disks that don't
|
|
* XXX have all their childs in the device tree.
|
|
* XXX YES, I DO THINK THIS IS A BUG IN OPENFIRMWARE!!!
|
|
* XXX And yes, this is a very gross hack!
|
|
* XXX See also ofscsi.c
|
|
*/
|
|
if (!strcmp(path + l - 4, "disk")) {
|
|
path[l++] = '@';
|
|
path[l++] = '0' + of->sc_unit;
|
|
path[l] = 0;
|
|
}
|
|
|
|
strlcat(path, ":0", sizeof(path));
|
|
|
|
if ((of->sc_ihandle = OF_open(path)) == -1) {
|
|
error = ENXIO;
|
|
goto bad1;
|
|
}
|
|
|
|
/*
|
|
* Try to get characteristics of the disk.
|
|
*/
|
|
of->max_transfer = OF_call_method_1("max-transfer",
|
|
of->sc_ihandle, 0);
|
|
if (of->max_transfer > MAXPHYS)
|
|
of->max_transfer = MAXPHYS;
|
|
|
|
ofdisk_getdisklabel(dev);
|
|
}
|
|
|
|
switch (fmt) {
|
|
case S_IFCHR:
|
|
of->sc_dk.dk_copenmask |= 1 << part;
|
|
break;
|
|
case S_IFBLK:
|
|
of->sc_dk.dk_bopenmask |= 1 << part;
|
|
break;
|
|
}
|
|
of->sc_dk.dk_openmask =
|
|
of->sc_dk.dk_copenmask | of->sc_dk.dk_bopenmask;
|
|
|
|
|
|
error = 0;
|
|
bad1:
|
|
mutex_exit(&of->sc_dk.dk_openlock);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ofdisk_close(dev_t dev, int flags, int fmt, struct lwp *l)
|
|
{
|
|
struct ofdisk_softc *of =
|
|
device_lookup_private(&ofdisk_cd, DISKUNIT(dev));
|
|
|
|
mutex_enter(&of->sc_dk.dk_openlock);
|
|
|
|
switch (fmt) {
|
|
case S_IFCHR:
|
|
of->sc_dk.dk_copenmask &= ~(1 << DISKPART(dev));
|
|
break;
|
|
case S_IFBLK:
|
|
of->sc_dk.dk_bopenmask &= ~(1 << DISKPART(dev));
|
|
break;
|
|
}
|
|
of->sc_dk.dk_openmask = of->sc_dk.dk_copenmask | of->sc_dk.dk_bopenmask;
|
|
|
|
#ifdef FIRMWORKSBUGS
|
|
/*
|
|
* This is a hack to get the firmware to flush its buffers.
|
|
*/
|
|
OF_seek(of->sc_ihandle, 0);
|
|
#endif
|
|
if (!of->sc_dk.dk_openmask) {
|
|
OF_close(of->sc_ihandle);
|
|
of->sc_ihandle = 0;
|
|
}
|
|
|
|
mutex_exit(&of->sc_dk.dk_openlock);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
ofdisk_strategy(struct buf *bp)
|
|
{
|
|
struct ofdisk_softc *of =
|
|
device_lookup_private(&ofdisk_cd, DISKUNIT(bp->b_dev));
|
|
struct partition *p;
|
|
u_quad_t off;
|
|
int read;
|
|
int (*OF_io)(int, void *, int);
|
|
daddr_t blkno = bp->b_blkno;
|
|
|
|
bp->b_resid = 0;
|
|
if (bp->b_bcount == 0)
|
|
goto done;
|
|
|
|
OF_io = bp->b_flags & B_READ ? OF_read :
|
|
(int(*)(int, void*, int))OF_write;
|
|
|
|
if (DISKPART(bp->b_dev) != RAW_PART) {
|
|
if (bounds_check_with_label(&of->sc_dk, bp, 0) <= 0) {
|
|
bp->b_resid = bp->b_bcount;
|
|
goto done;
|
|
}
|
|
p = &of->sc_dk.dk_label->d_partitions[DISKPART(bp->b_dev)];
|
|
blkno = bp->b_blkno + p->p_offset;
|
|
}
|
|
|
|
disk_busy(&of->sc_dk);
|
|
|
|
off = (u_quad_t)blkno * DEV_BSIZE;
|
|
read = -1;
|
|
do {
|
|
if (OF_seek(of->sc_ihandle, off) < 0)
|
|
break;
|
|
read = OF_io(of->sc_ihandle, bp->b_data, bp->b_bcount);
|
|
} while (read == -2);
|
|
|
|
if (read < 0) {
|
|
bp->b_error = EIO;
|
|
bp->b_resid = bp->b_bcount;
|
|
} else
|
|
bp->b_resid = bp->b_bcount - read;
|
|
|
|
disk_unbusy(&of->sc_dk, bp->b_bcount - bp->b_resid,
|
|
(bp->b_flags & B_READ));
|
|
|
|
done:
|
|
biodone(bp);
|
|
}
|
|
|
|
static void
|
|
ofminphys(struct buf *bp)
|
|
{
|
|
struct ofdisk_softc *of =
|
|
device_lookup_private(&ofdisk_cd, DISKUNIT(bp->b_dev));
|
|
|
|
if (bp->b_bcount > of->max_transfer)
|
|
bp->b_bcount = of->max_transfer;
|
|
}
|
|
|
|
int
|
|
ofdisk_read(dev_t dev, struct uio *uio, int flags)
|
|
{
|
|
return physio(ofdisk_strategy, NULL, dev, B_READ, ofminphys, uio);
|
|
}
|
|
|
|
int
|
|
ofdisk_write(dev_t dev, struct uio *uio, int flags)
|
|
{
|
|
return physio(ofdisk_strategy, NULL, dev, B_WRITE, ofminphys, uio);
|
|
}
|
|
|
|
int
|
|
ofdisk_ioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
|
|
{
|
|
struct ofdisk_softc *of =
|
|
device_lookup_private(&ofdisk_cd, DISKUNIT(dev));
|
|
int error;
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
struct disklabel newlabel;
|
|
#endif
|
|
/* XXX: Why not allow wedges on floppy? */
|
|
switch (cmd) {
|
|
case DIOCDWEDGE:
|
|
case DIOCAWEDGE:
|
|
case DIOCLWEDGES:
|
|
case DIOCRMWEDGES:
|
|
case DIOCMWEDGES:
|
|
if (OFDISK_FLOPPY_P(of))
|
|
return ENOTTY;
|
|
}
|
|
|
|
error = disk_ioctl(&of->sc_dk, dev, cmd, data, flag, l);
|
|
if (error != EPASSTHROUGH)
|
|
return error;
|
|
|
|
switch (cmd) {
|
|
case DIOCWDINFO:
|
|
case DIOCSDINFO:
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
case ODIOCWDINFO:
|
|
case ODIOCSDINFO:
|
|
#endif
|
|
{
|
|
struct disklabel *lp;
|
|
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) {
|
|
memset(&newlabel, 0, sizeof newlabel);
|
|
memcpy(&newlabel, data, sizeof (struct olddisklabel));
|
|
lp = &newlabel;
|
|
} else
|
|
#endif
|
|
lp = (struct disklabel *)data;
|
|
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
|
|
mutex_enter(&of->sc_dk.dk_openlock);
|
|
|
|
error = setdisklabel(of->sc_dk.dk_label,
|
|
lp, /*of->sc_dk.dk_openmask */0,
|
|
of->sc_dk.dk_cpulabel);
|
|
if (error == 0 && (cmd == DIOCWDINFO
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
|| cmd == ODIOCWDINFO
|
|
#endif
|
|
))
|
|
error = writedisklabel(MAKEDISKDEV(major(dev),
|
|
DISKUNIT(dev), RAW_PART), ofdisk_strategy,
|
|
of->sc_dk.dk_label, of->sc_dk.dk_cpulabel);
|
|
|
|
mutex_exit(&of->sc_dk.dk_openlock);
|
|
|
|
return error;
|
|
}
|
|
|
|
case DIOCGDEFLABEL:
|
|
ofdisk_getdefaultlabel(of, (struct disklabel *)data);
|
|
return 0;
|
|
#ifdef __HAVE_OLD_DISKLABEL
|
|
case ODIOCGDEFLABEL:
|
|
ofdisk_getdefaultlabel(of, &newlabel);
|
|
if (newlabel.d_npartitions > OLDMAXPARTITIONS)
|
|
return ENOTTY;
|
|
memcpy(data, &newlabel, sizeof (struct olddisklabel));
|
|
return 0;
|
|
#endif
|
|
|
|
default:
|
|
return ENOTTY;
|
|
}
|
|
}
|
|
|
|
int
|
|
ofdisk_dump(dev_t dev, daddr_t blkno, void *va, size_t size)
|
|
{
|
|
return EINVAL;
|
|
}
|
|
|
|
int
|
|
ofdisk_size(dev_t dev)
|
|
{
|
|
struct ofdisk_softc *of;
|
|
struct disklabel *lp;
|
|
int size, part, omask;
|
|
|
|
of = device_lookup_private(&ofdisk_cd, DISKUNIT(dev));
|
|
if (of == NULL)
|
|
return ENXIO;
|
|
|
|
part = DISKPART(dev);
|
|
omask = of->sc_dk.dk_openmask & (1 << part);
|
|
lp = of->sc_dk.dk_label;
|
|
|
|
if (omask == 0 && ofdisk_open(dev, 0, S_IFBLK, curlwp) != 0)
|
|
return -1;
|
|
|
|
if (lp->d_partitions[part].p_fstype != FS_SWAP)
|
|
size = -1;
|
|
else
|
|
size = lp->d_partitions[part].p_size *
|
|
(lp->d_secsize / DEV_BSIZE);
|
|
|
|
if (omask == 0 && ofdisk_close(dev, 0, S_IFBLK, curlwp) != 0)
|
|
return -1;
|
|
|
|
return size;
|
|
}
|
|
|
|
void
|
|
ofdisk_getdefaultlabel(struct ofdisk_softc *of, struct disklabel *lp)
|
|
{
|
|
|
|
memset(lp, 0, sizeof *lp);
|
|
|
|
/*
|
|
* XXX Firmware bug? Asking for block size gives a
|
|
* XXX ridiculous number! So we use what the boot program
|
|
* XXX uses.
|
|
*/
|
|
lp->d_secsize = DEV_BSIZE;
|
|
|
|
lp->d_secperunit = OF_call_method_1("#blocks",
|
|
of->sc_ihandle, 0);
|
|
if (lp->d_secperunit == (u_int32_t)-1)
|
|
lp->d_secperunit = 0x7fffffff;
|
|
|
|
lp->d_secpercyl = 1;
|
|
lp->d_nsectors = 1;
|
|
lp->d_ntracks = 1;
|
|
lp->d_ncylinders = lp->d_secperunit;
|
|
|
|
lp->d_partitions[RAW_PART].p_offset = 0;
|
|
lp->d_partitions[RAW_PART].p_size = lp->d_secperunit;
|
|
lp->d_npartitions = RAW_PART + 1;
|
|
|
|
lp->d_magic = DISKMAGIC;
|
|
lp->d_magic2 = DISKMAGIC;
|
|
lp->d_checksum = dkcksum(lp);
|
|
}
|
|
|
|
void
|
|
ofdisk_getdisklabel(dev_t dev)
|
|
{
|
|
int unit = DISKUNIT(dev);
|
|
struct ofdisk_softc *of =
|
|
device_lookup_private(&ofdisk_cd, unit);
|
|
struct disklabel *lp = of->sc_dk.dk_label;
|
|
const char *errmes;
|
|
int l;
|
|
|
|
ofdisk_getdefaultlabel(of, lp);
|
|
|
|
/*
|
|
* Don't read the disklabel on a floppy; simply
|
|
* assign all partitions the same size/offset as
|
|
* RAW_PART. (This is essentially what the ISA
|
|
* floppy driver does, but we don't deal with
|
|
* density stuff.)
|
|
*/
|
|
if (OFDISK_FLOPPY_P(of)) {
|
|
lp->d_npartitions = MAXPARTITIONS;
|
|
for (l = 0; l < lp->d_npartitions; l++) {
|
|
if (l == RAW_PART)
|
|
continue;
|
|
/* struct copy */
|
|
lp->d_partitions[l] =
|
|
lp->d_partitions[RAW_PART];
|
|
}
|
|
lp->d_checksum = dkcksum(lp);
|
|
} else {
|
|
errmes = readdisklabel(MAKEDISKDEV(major(dev),
|
|
unit, RAW_PART), ofdisk_strategy, lp,
|
|
of->sc_dk.dk_cpulabel);
|
|
if (errmes != NULL)
|
|
printf("%s: %s\n", device_xname(of->sc_dev), errmes);
|
|
}
|
|
}
|