189 lines
4.5 KiB
C
189 lines
4.5 KiB
C
/* $NetBSD: uk.c,v 1.16 1996/10/10 23:31:40 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Charles Hannum. 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 Charles Hannum.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*/
|
|
|
|
/*
|
|
* Dummy driver for a device we can't identify.
|
|
* Originally by Julian Elischer (julian@tfs.com)
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <sys/errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/device.h>
|
|
#include <sys/conf.h>
|
|
|
|
#include <scsi/scsi_all.h>
|
|
#include <scsi/scsiconf.h>
|
|
|
|
#define UKUNIT(z) (minor(z))
|
|
|
|
struct uk_softc {
|
|
struct device sc_dev;
|
|
|
|
struct scsi_link *sc_link; /* all the inter level info */
|
|
};
|
|
|
|
int ukmatch __P((struct device *, void *, void *));
|
|
void ukattach __P((struct device *, struct device *, void *));
|
|
|
|
struct cfattach uk_ca = {
|
|
sizeof(struct uk_softc), ukmatch, ukattach
|
|
};
|
|
|
|
struct cfdriver uk_cd = {
|
|
NULL, "uk", DV_DULL
|
|
};
|
|
|
|
/*
|
|
* This driver is so simple it uses all the default services
|
|
*/
|
|
struct scsi_device uk_switch = {
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
|
|
cdev_decl(uk);
|
|
|
|
int
|
|
ukmatch(parent, match, aux)
|
|
struct device *parent;
|
|
void *match, *aux;
|
|
{
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* The routine called by the low level scsi routine when it discovers
|
|
* a device suitable for this driver.
|
|
*/
|
|
void
|
|
ukattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct uk_softc *uk = (void *)self;
|
|
struct scsibus_attach_args *sa = aux;
|
|
struct scsi_link *sc_link = sa->sa_sc_link;
|
|
|
|
SC_DEBUG(sc_link, SDEV_DB2, ("ukattach: "));
|
|
|
|
/*
|
|
* Store information needed to contact our base driver
|
|
*/
|
|
uk->sc_link = sc_link;
|
|
sc_link->device = &uk_switch;
|
|
sc_link->device_softc = uk;
|
|
sc_link->openings = 1;
|
|
|
|
kprintf("\n");
|
|
kprintf("%s: unknown device\n", uk->sc_dev.dv_xname);
|
|
}
|
|
|
|
/*
|
|
* open the device.
|
|
*/
|
|
int
|
|
ukopen(dev, flag, fmt, p)
|
|
dev_t dev;
|
|
int flag, fmt;
|
|
struct proc *p;
|
|
{
|
|
int unit;
|
|
struct uk_softc *uk;
|
|
struct scsi_link *sc_link;
|
|
|
|
unit = UKUNIT(dev);
|
|
if (unit >= uk_cd.cd_ndevs)
|
|
return ENXIO;
|
|
uk = uk_cd.cd_devs[unit];
|
|
if (!uk)
|
|
return ENXIO;
|
|
|
|
sc_link = uk->sc_link;
|
|
|
|
SC_DEBUG(sc_link, SDEV_DB1,
|
|
("ukopen: dev=0x%x (unit %d (of %d))\n", dev, unit, uk_cd.cd_ndevs));
|
|
|
|
/*
|
|
* Only allow one at a time
|
|
*/
|
|
if (sc_link->flags & SDEV_OPEN) {
|
|
kprintf("%s: already open\n", uk->sc_dev.dv_xname);
|
|
return EBUSY;
|
|
}
|
|
|
|
sc_link->flags |= SDEV_OPEN;
|
|
|
|
SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n"));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* close the device.. only called if we are the LAST
|
|
* occurence of an open device
|
|
*/
|
|
int
|
|
ukclose(dev, flag, fmt, p)
|
|
dev_t dev;
|
|
int flag, fmt;
|
|
struct proc *p;
|
|
{
|
|
struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)];
|
|
|
|
SC_DEBUG(uk->sc_link, SDEV_DB1, ("closing\n"));
|
|
uk->sc_link->flags &= ~SDEV_OPEN;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Perform special action on behalf of the user
|
|
* Only does generic scsi ioctls.
|
|
*/
|
|
int
|
|
ukioctl(dev, cmd, addr, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t addr;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
register struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)];
|
|
|
|
return scsi_do_ioctl(uk->sc_link, dev, cmd, addr, flag, p);
|
|
}
|