mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
7812d86f03
and predictable way, and I apologize if I have gotten it wrong anywhere, getting prior review on a patch like this is not feasible, considering the number of people involved and hardware availability etc.) If struct disklabel is the messenger: kill the messenger. Inside struct disk we had a struct disklabel which disk drivers used to communicate certain metrics to the disklayer above (GEOM or the disk mini-layer). This commit changes this communication to use four explicit fields instead. Amongst the benefits is that the fields do not get overwritten by wrong or bogus on-disk disklabels. Once that is clear, <sys/disk.h> which is included in the drivers no longer need to pull <sys/disklabel.h> and <sys/diskslice.h> in, the few places that needs them, have gotten explicit #includes for them. The disklabel inside struct disk is now only for internal use in the disk mini-layer, so instead of embedding it, we malloc it as we need it. This concludes (modulus any mistakes) the series of disklabel related commits. I belive it all amounts to a NOP for all the rest of you :-) Sponsored by: DARPA & NAI Labs.
283 lines
7.0 KiB
C
283 lines
7.0 KiB
C
/*-
|
|
* Copyright (c) 1999 Jonathan Lemon
|
|
* Copyright (c) 1999 Michael Smith
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Disk driver for Mylex DAC960 RAID adapters.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
|
|
#include <sys/bus.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/devicestat.h>
|
|
#include <sys/disk.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/mlx/mlx_compat.h>
|
|
#include <dev/mlx/mlxio.h>
|
|
#include <dev/mlx/mlxvar.h>
|
|
#include <dev/mlx/mlxreg.h>
|
|
|
|
/* prototypes */
|
|
static int mlxd_probe(device_t dev);
|
|
static int mlxd_attach(device_t dev);
|
|
static int mlxd_detach(device_t dev);
|
|
|
|
static d_open_t mlxd_open;
|
|
static d_close_t mlxd_close;
|
|
static d_strategy_t mlxd_strategy;
|
|
static d_ioctl_t mlxd_ioctl;
|
|
|
|
#define MLXD_CDEV_MAJOR 131
|
|
|
|
static struct cdevsw mlxd_cdevsw = {
|
|
/* open */ mlxd_open,
|
|
/* close */ mlxd_close,
|
|
/* read */ physread,
|
|
/* write */ physwrite,
|
|
/* ioctl */ mlxd_ioctl,
|
|
/* poll */ nopoll,
|
|
/* mmap */ nommap,
|
|
/* strategy */ mlxd_strategy,
|
|
/* name */ "mlxd",
|
|
/* maj */ MLXD_CDEV_MAJOR,
|
|
/* dump */ nodump,
|
|
/* psize */ nopsize,
|
|
/* flags */ D_DISK,
|
|
};
|
|
|
|
devclass_t mlxd_devclass;
|
|
static struct cdevsw mlxddisk_cdevsw;
|
|
|
|
static device_method_t mlxd_methods[] = {
|
|
DEVMETHOD(device_probe, mlxd_probe),
|
|
DEVMETHOD(device_attach, mlxd_attach),
|
|
DEVMETHOD(device_detach, mlxd_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t mlxd_driver = {
|
|
"mlxd",
|
|
mlxd_methods,
|
|
sizeof(struct mlxd_softc)
|
|
};
|
|
|
|
DRIVER_MODULE(mlxd, mlx, mlxd_driver, mlxd_devclass, 0, 0);
|
|
|
|
static int
|
|
mlxd_open(dev_t dev, int flags, int fmt, struct thread *td)
|
|
{
|
|
struct mlxd_softc *sc = (struct mlxd_softc *)dev->si_drv1;
|
|
|
|
debug_called(1);
|
|
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
|
|
/* controller not active? */
|
|
if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN)
|
|
return(ENXIO);
|
|
|
|
sc->mlxd_disk.d_sectorsize = MLX_BLKSIZE;
|
|
sc->mlxd_disk.d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size;
|
|
sc->mlxd_disk.d_fwsectors = sc->mlxd_drive->ms_sectors;
|
|
sc->mlxd_disk.d_fwheads = sc->mlxd_drive->ms_heads;
|
|
|
|
sc->mlxd_flags |= MLXD_OPEN;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mlxd_close(dev_t dev, int flags, int fmt, struct thread *td)
|
|
{
|
|
struct mlxd_softc *sc = (struct mlxd_softc *)dev->si_drv1;
|
|
|
|
debug_called(1);
|
|
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
sc->mlxd_flags &= ~MLXD_OPEN;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mlxd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *td)
|
|
{
|
|
struct mlxd_softc *sc = (struct mlxd_softc *)dev->si_drv1;
|
|
int error;
|
|
|
|
debug_called(1);
|
|
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
|
|
if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) {
|
|
debug(0, "mlx_submit_ioctl returned %d\n", error);
|
|
return(error);
|
|
}
|
|
return (ENOTTY);
|
|
}
|
|
|
|
/*
|
|
* Read/write routine for a buffer. Finds the proper unit, range checks
|
|
* arguments, and schedules the transfer. Does not wait for the transfer
|
|
* to complete. Multi-page transfers are supported. All I/O requests must
|
|
* be a multiple of a sector in length.
|
|
*/
|
|
static void
|
|
mlxd_strategy(mlx_bio *bp)
|
|
{
|
|
struct mlxd_softc *sc = (struct mlxd_softc *)MLX_BIO_SOFTC(bp);
|
|
|
|
debug_called(1);
|
|
|
|
/* bogus disk? */
|
|
if (sc == NULL) {
|
|
MLX_BIO_SET_ERROR(bp, EINVAL);
|
|
goto bad;
|
|
}
|
|
|
|
/* XXX may only be temporarily offline - sleep? */
|
|
if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) {
|
|
MLX_BIO_SET_ERROR(bp, ENXIO);
|
|
goto bad;
|
|
}
|
|
|
|
MLX_BIO_STATS_START(bp);
|
|
mlx_submit_buf(sc->mlxd_controller, bp);
|
|
return;
|
|
|
|
bad:
|
|
/*
|
|
* Correctly set the bio to indicate a failed tranfer.
|
|
*/
|
|
MLX_BIO_RESID(bp) = MLX_BIO_LENGTH(bp);
|
|
MLX_BIO_DONE(bp);
|
|
return;
|
|
}
|
|
|
|
void
|
|
mlxd_intr(void *data)
|
|
{
|
|
mlx_bio *bp = (mlx_bio *)data;
|
|
|
|
debug_called(1);
|
|
|
|
if (MLX_BIO_HAS_ERROR(bp))
|
|
MLX_BIO_SET_ERROR(bp, EIO);
|
|
else
|
|
MLX_BIO_RESID(bp) = 0;
|
|
|
|
MLX_BIO_STATS_END(bp);
|
|
MLX_BIO_DONE(bp);
|
|
}
|
|
|
|
static int
|
|
mlxd_probe(device_t dev)
|
|
{
|
|
|
|
debug_called(1);
|
|
|
|
device_set_desc(dev, "Mylex System Drive");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mlxd_attach(device_t dev)
|
|
{
|
|
struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev);
|
|
device_t parent;
|
|
char *state;
|
|
dev_t dsk;
|
|
int s1, s2;
|
|
|
|
debug_called(1);
|
|
|
|
parent = device_get_parent(dev);
|
|
sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent);
|
|
sc->mlxd_unit = device_get_unit(dev);
|
|
sc->mlxd_drive = device_get_ivars(dev);
|
|
sc->mlxd_dev = dev;
|
|
|
|
switch(sc->mlxd_drive->ms_state) {
|
|
case MLX_SYSD_ONLINE:
|
|
state = "online";
|
|
break;
|
|
case MLX_SYSD_CRITICAL:
|
|
state = "critical";
|
|
break;
|
|
case MLX_SYSD_OFFLINE:
|
|
state = "offline";
|
|
break;
|
|
default:
|
|
state = "unknown state";
|
|
}
|
|
|
|
device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
|
|
sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE),
|
|
sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state);
|
|
|
|
devstat_add_entry(&sc->mlxd_stats, "mlxd", sc->mlxd_unit, MLX_BLKSIZE,
|
|
DEVSTAT_NO_ORDERED_TAGS,
|
|
DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
|
|
DEVSTAT_PRIORITY_ARRAY);
|
|
|
|
dsk = disk_create(sc->mlxd_unit, &sc->mlxd_disk, 0, &mlxd_cdevsw, &mlxddisk_cdevsw);
|
|
dsk->si_drv1 = sc;
|
|
sc->mlxd_dev_t = dsk;
|
|
|
|
/*
|
|
* Set maximum I/O size to the lesser of the recommended maximum and the practical
|
|
* maximum.
|
|
*/
|
|
s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE;
|
|
s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * PAGE_SIZE;
|
|
dsk->si_iosize_max = imin(s1, s2);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mlxd_detach(device_t dev)
|
|
{
|
|
struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev);
|
|
|
|
debug_called(1);
|
|
|
|
devstat_remove_entry(&sc->mlxd_stats);
|
|
disk_destroy(sc->mlxd_dev_t);
|
|
|
|
return(0);
|
|
}
|
|
|