292 lines
7.7 KiB
C
292 lines
7.7 KiB
C
/*-
|
|
* Copyright (c) 2000 Michael Smith
|
|
* Copyright (c) 2000 BSDi
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
|
|
#include <dev/aac/aac_compat.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/aac/aacreg.h>
|
|
#include <dev/aac/aac_ioctl.h>
|
|
#include <dev/aac/aacvar.h>
|
|
|
|
/*
|
|
* Interface to parent.
|
|
*/
|
|
static int aac_disk_probe(device_t dev);
|
|
static int aac_disk_attach(device_t dev);
|
|
static int aac_disk_detach(device_t dev);
|
|
|
|
/*
|
|
* Interface to the device switch.
|
|
*/
|
|
static d_open_t aac_disk_open;
|
|
static d_close_t aac_disk_close;
|
|
static d_strategy_t aac_disk_strategy;
|
|
|
|
#define AAC_DISK_CDEV_MAJOR 151
|
|
|
|
static struct cdevsw aac_disk_cdevsw = {
|
|
/* open */ aac_disk_open,
|
|
/* close */ aac_disk_close,
|
|
/* read */ physread,
|
|
/* write */ physwrite,
|
|
/* ioctl */ noioctl,
|
|
/* poll */ nopoll,
|
|
/* mmap */ nommap,
|
|
/* strategy */ aac_disk_strategy,
|
|
/* name */ "aacd",
|
|
/* maj */ AAC_DISK_CDEV_MAJOR,
|
|
/* dump */ nodump,
|
|
/* psize */ nopsize,
|
|
/* flags */ D_DISK,
|
|
/* bmaj */ -1
|
|
};
|
|
|
|
devclass_t aac_disk_devclass;
|
|
static struct cdevsw aac_disk_disk_cdevsw;
|
|
#ifdef FREEBSD_4
|
|
static int disks_registered = 0;
|
|
#endif
|
|
|
|
static device_method_t aac_disk_methods[] = {
|
|
DEVMETHOD(device_probe, aac_disk_probe),
|
|
DEVMETHOD(device_attach, aac_disk_attach),
|
|
DEVMETHOD(device_detach, aac_disk_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t aac_disk_driver = {
|
|
"aacd",
|
|
aac_disk_methods,
|
|
sizeof(struct aac_disk)
|
|
};
|
|
|
|
DRIVER_MODULE(aacd, aac, aac_disk_driver, aac_disk_devclass, 0, 0);
|
|
|
|
/********************************************************************************
|
|
* Handle open from generic layer.
|
|
*
|
|
* This is called by the diskslice code on first open in order to get the
|
|
* basic device geometry paramters.
|
|
*/
|
|
static int
|
|
aac_disk_open(dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
struct aac_disk *sc = (struct aac_disk *)dev->si_drv1;
|
|
struct disklabel *label;
|
|
|
|
debug_called(4);
|
|
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
|
|
/* check that the controller is up and running */
|
|
if (sc->ad_controller->aac_state & AAC_STATE_SUSPEND)
|
|
return(ENXIO);
|
|
|
|
/* build synthetic label */
|
|
label = &sc->ad_disk.d_label;
|
|
bzero(label, sizeof(*label));
|
|
label->d_type = DTYPE_ESDI;
|
|
label->d_secsize = AAC_BLOCK_SIZE;
|
|
label->d_nsectors = sc->ad_sectors;
|
|
label->d_ntracks = sc->ad_heads;
|
|
label->d_ncylinders = sc->ad_cylinders;
|
|
label->d_secpercyl = sc->ad_sectors * sc->ad_heads;
|
|
label->d_secperunit = sc->ad_size;
|
|
|
|
sc->ad_flags |= AAC_DISK_OPEN;
|
|
return (0);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Handle last close of the disk device.
|
|
*/
|
|
static int
|
|
aac_disk_close(dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
struct aac_disk *sc = (struct aac_disk *)dev->si_drv1;
|
|
|
|
debug_called(4);
|
|
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
|
|
sc->ad_flags &= ~AAC_DISK_OPEN;
|
|
return (0);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Handle an I/O request.
|
|
*/
|
|
static void
|
|
aac_disk_strategy(struct bio *bp)
|
|
{
|
|
struct aac_disk *sc = (struct aac_disk *)bp->bio_dev->si_drv1;
|
|
|
|
debug_called(4);
|
|
|
|
/* bogus disk? */
|
|
if (sc == NULL) {
|
|
bp->bio_flags |= BIO_ERROR;
|
|
bp->bio_error = EINVAL;
|
|
biodone(bp);
|
|
return;
|
|
}
|
|
|
|
/* do-nothing operation? */
|
|
if (bp->bio_bcount == 0) {
|
|
bp->bio_resid = bp->bio_bcount;
|
|
biodone(bp);
|
|
return;
|
|
}
|
|
|
|
/* perform accounting */
|
|
devstat_start_transaction(&sc->ad_stats);
|
|
|
|
/* pass the bio to the controller - it can work out who we are */
|
|
aac_submit_bio(bp);
|
|
return;
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Handle completion of an I/O request.
|
|
*/
|
|
void
|
|
aac_biodone(struct bio *bp)
|
|
{
|
|
struct aac_disk *sc = (struct aac_disk *)bp->bio_dev->si_drv1;
|
|
|
|
debug_called(4);
|
|
|
|
devstat_end_transaction_bio(&sc->ad_stats, bp);
|
|
if (bp->bio_flags & BIO_ERROR)
|
|
diskerr(bp, (char *)bp->bio_driver1, 0, &sc->ad_label);
|
|
biodone(bp);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Stub only.
|
|
*/
|
|
static int
|
|
aac_disk_probe(device_t dev)
|
|
{
|
|
|
|
debug_called(4);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Attach a unit to the controller.
|
|
*/
|
|
static int
|
|
aac_disk_attach(device_t dev)
|
|
{
|
|
struct aac_disk *sc = (struct aac_disk *)device_get_softc(dev);
|
|
|
|
debug_called(4);
|
|
|
|
/* initialise our softc */
|
|
sc->ad_controller = (struct aac_softc *)device_get_softc(device_get_parent(dev));
|
|
sc->ad_container = device_get_ivars(dev);
|
|
sc->ad_dev = dev;
|
|
|
|
/* require that extended translation be enabled - other drivers read the disk! */
|
|
sc->ad_size = sc->ad_container->co_mntobj.Capacity;
|
|
if (sc->ad_size >= (2 * 1024 * 1024)) { /* 2GB */
|
|
sc->ad_heads = 255;
|
|
sc->ad_sectors = 63;
|
|
} else if (sc->ad_size >= (1 * 1024 * 1024)) { /* 1GB */
|
|
sc->ad_heads = 128;
|
|
sc->ad_sectors = 32;
|
|
} else {
|
|
sc->ad_heads = 64;
|
|
sc->ad_sectors = 32;
|
|
}
|
|
sc->ad_cylinders = (sc->ad_size / (sc->ad_heads * sc->ad_sectors));
|
|
|
|
device_printf(dev, "%uMB (%u sectors)\n",
|
|
sc->ad_size / ((1024 * 1024) / AAC_BLOCK_SIZE), sc->ad_size);
|
|
|
|
devstat_add_entry(&sc->ad_stats, "aacd", device_get_unit(dev), AAC_BLOCK_SIZE,
|
|
DEVSTAT_NO_ORDERED_TAGS,
|
|
DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
|
|
DEVSTAT_PRIORITY_ARRAY);
|
|
|
|
/* attach a generic disk device to ourselves */
|
|
sc->ad_dev_t = disk_create(device_get_unit(dev), &sc->ad_disk, 0, &aac_disk_cdevsw, &aac_disk_disk_cdevsw);
|
|
sc->ad_dev_t->si_drv1 = sc;
|
|
#ifdef FREEBSD_4
|
|
disks_registered++;
|
|
#endif
|
|
|
|
/*
|
|
* The adapters seem to have a 64K size limit on the max I/O size. Set
|
|
* our size on accordance.
|
|
*/
|
|
sc->ad_dev_t->si_iosize_max = 65536;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Disconnect ourselves from the system.
|
|
*/
|
|
static int
|
|
aac_disk_detach(device_t dev)
|
|
{
|
|
struct aac_disk *sc = (struct aac_disk *)device_get_softc(dev);
|
|
|
|
debug_called(4);
|
|
|
|
if (sc->ad_flags & AAC_DISK_OPEN)
|
|
return(EBUSY);
|
|
|
|
devstat_remove_entry(&sc->ad_stats);
|
|
#ifdef FREEBSD_4
|
|
if (--disks_registered == 0)
|
|
cdevsw_remove(&aac_disk_disk_cdevsw);
|
|
#else
|
|
disk_destroy(sc->ad_dev_t);
|
|
#endif
|
|
|
|
return(0);
|
|
}
|
|
|