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/*-
* Copyright (c) 1999 Jonathan Lemon
* 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.
*
* $Id: ida_disk.c,v 1.1 1999/06/24 03:31:57 jlemon Exp $
*/
/*
* Disk driver for Compaq SMART RAID adapters.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/devicestat.h>
#include <sys/disklabel.h>
#include <sys/diskslice.h>
#if NPCI > 0
#include <machine/bus_memio.h>
#endif
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/clock.h>
#include <sys/rman.h>
#include <dev/ida/idareg.h>
#include <dev/ida/idavar.h>
/* prototypes */
static void id_drvinit(void);
static int idprobe(device_t dev);
static int idattach(device_t dev);
static d_open_t idopen;
static d_close_t idclose;
static d_strategy_t idstrategy;
static d_ioctl_t idioctl;
static d_psize_t idsize;
#define ID_BDEV_MAJOR 29
#define ID_CDEV_MAJOR 109
#define WD_BDEV_MAJOR 0
#define WD_CDEV_MAJOR 3
static struct cdevsw id_cdevsw = {
/* open */ idopen,
/* close */ idclose,
/* read */ physread,
/* write */ physwrite,
/* ioctl */ idioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ idstrategy,
/* name */ "id",
/* parms */ noparms,
/* maj */ ID_CDEV_MAJOR,
/* dump */ nodump,
/* psize */ idsize,
/* flags */ D_DISK,
/* maxio */ 0,
/* bmaj */ ID_BDEV_MAJOR
};
static struct cdevsw stolen_cdevsw;
static devclass_t id_devclass;
static device_method_t id_methods[] = {
DEVMETHOD(device_probe, idprobe),
DEVMETHOD(device_attach, idattach),
{ 0, 0 }
};
static driver_t id_driver = {
"id",
id_methods,
sizeof(struct id_softc)
};
static __inline struct id_softc *
idgetsoftc(dev_t dev)
{
int unit;
unit = dkunit(dev);
return ((struct id_softc *)devclass_get_softc(id_devclass, unit));
}
static int
idopen(dev_t dev, int flags, int fmt, struct proc *p)
{
struct id_softc *drv;
struct disklabel label;
int error;
drv = idgetsoftc(dev);
if (drv == NULL)
return (ENXIO);
/* XXX block against race where > 1 person is reading label? */
bzero(&label, sizeof(label));
label.d_type = DTYPE_SCSI; /* XXX should this be DTYPE_RAID? */
/*
strncpy(label.d_typename, ...
strncpy(label.d_packname, ...
*/
label.d_secsize = drv->secsize;
label.d_nsectors = drv->sectors;
label.d_ntracks = drv->heads;
label.d_ncylinders = drv->cylinders;
label.d_secpercyl = drv->sectors * drv->heads;
label.d_secperunit = drv->secperunit;
/* Initialize slice tables. */
error = dsopen("id", dev, fmt, 0, &drv->slices, &label,
idstrategy, (ds_setgeom_t *)NULL, &id_cdevsw);
return (error);
}
static int
idclose(dev_t dev, int flags, int fmt, struct proc *p)
{
struct id_softc *drv;
drv = idgetsoftc(dev);
if (drv == NULL)
return (ENXIO);
dsclose(dev, fmt, drv->slices);
return (0);
}
static int
idioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
{
struct id_softc *drv;
int error;
drv = idgetsoftc(dev);
if (drv == NULL)
return (ENXIO);
error = dsioctl("id", dev, cmd, addr, flag, &drv->slices,
idstrategy, (ds_setgeom_t *)NULL);
if (error == ENOIOCTL)
return (ENOTTY);
return (error);
}
static int
idsize(dev_t dev)
{
struct id_softc *drv;
drv = idgetsoftc(dev);
if (drv == NULL)
return (ENXIO);
return (dssize(dev, &drv->slices, idopen, idclose));
}
/*
* 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
idstrategy(struct buf *bp)
{
struct id_softc *drv;
int s;
drv = idgetsoftc(bp->b_dev);
if (drv == NULL) {
bp->b_error = EINVAL;
goto bad;
}
if (dscheck(bp, drv->slices) <= 0)
goto done;
/*
* software write protect check
*/
if (drv->flags & DRV_WRITEPROT && (bp->b_flags & B_READ) == 0) {
bp->b_error = EROFS;
goto bad;
}
/*
* If it's a null transfer, return immediately
*/
if (bp->b_bcount == 0)
goto done;
bp->b_driver1 = drv;
s = splbio();
devstat_start_transaction(&drv->stats);
ida_submit_buf(drv->controller, bp);
splx(s);
return;
bad:
bp->b_flags |= B_ERROR;
done:
/*
* Correctly set the buf to indicate a completed transfer
*/
bp->b_resid = bp->b_bcount;
biodone(bp);
return;
}
void
id_intr(struct buf *bp)
{
struct id_softc *drv = (struct id_softc *)bp->b_driver1;
if (bp->b_flags & B_ERROR)
bp->b_error = EIO;
else
bp->b_resid = 0;
biodone(bp);
devstat_end_transaction(&drv->stats,
bp->b_bcount - bp->b_resid, DEVSTAT_TAG_NONE,
(bp->b_flags & B_READ) ? DEVSTAT_READ : DEVSTAT_WRITE);
}
static void
id_drvinit(void)
{
static int devsw_installed = 0;
if (devsw_installed)
return; /* XXX is this needed? */
cdevsw_add(&id_cdevsw);
stolen_cdevsw = id_cdevsw;
stolen_cdevsw.d_maj = WD_CDEV_MAJOR;
stolen_cdevsw.d_bmaj = WD_BDEV_MAJOR;
cdevsw_add(&stolen_cdevsw);
devsw_installed = 1;
}
static int
idprobe(device_t dev)
{
id_drvinit();
device_set_desc(dev, "Compaq Logical Drive");
return (0);
}
static int
idattach(device_t dev)
{
struct ida_drive_info dinfo;
struct id_softc *drv;
device_t parent;
int error;
drv = (struct id_softc *)device_get_softc(dev);
parent = device_get_parent(dev);
drv->controller = (struct ida_softc *)device_get_softc(parent);
drv->unit = device_get_unit(dev);
error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
&dinfo, sizeof(dinfo), drv->unit, DMA_DATA_IN);
if (error) {
device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
return (ENXIO);
}
drv->cylinders = dinfo.ncylinders;
drv->heads = dinfo.nheads;
drv->sectors = dinfo.nsectors;
drv->secsize = dinfo.secsize;
drv->secperunit = dinfo.secperunit;
/* XXX
* other initialization
*/
device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
drv->secperunit / ((1024 * 1024) / drv->secsize),
drv->secperunit, drv->secsize);
devstat_add_entry(&drv->stats, "id", drv->unit, drv->secsize,
DEVSTAT_NO_ORDERED_TAGS,
DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_OTHER, DEVSTAT_PRIORITY_DA);
return (0);
}
DEV_DRIVER_MODULE(id, ida, id_driver, id_devclass, id_cdevsw, 0, 0);
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