/* $NetBSD: uk.c,v 1.52 2007/03/04 06:02:44 christos Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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 the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Dummy driver for a device we can't identify. * Originally by Julian Elischer (julian@tfs.com) */ #include __KERNEL_RCSID(0, "$NetBSD: uk.c,v 1.52 2007/03/04 06:02:44 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #define UKUNIT(z) (minor(z)) struct uk_softc { struct device sc_dev; struct scsipi_periph *sc_periph; /* all the inter level info */ }; static int ukmatch(struct device *, struct cfdata *, void *); static void ukattach(struct device *, struct device *, void *); static int ukactivate(struct device *, enum devact); static int ukdetach(struct device *, int); CFATTACH_DECL(uk, sizeof(struct uk_softc), ukmatch, ukattach, ukdetach, ukactivate); extern struct cfdriver uk_cd; static dev_type_open(ukopen); static dev_type_close(ukclose); static dev_type_ioctl(ukioctl); const struct cdevsw uk_cdevsw = { ukopen, ukclose, noread, nowrite, ukioctl, nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, }; static int ukmatch(struct device *parent, struct cfdata *match, void *aux) { return (1); } /* * The routine called by the low level scsi routine when it discovers * a device suitable for this driver. */ static void ukattach(struct device *parent, struct device *self, void *aux) { struct uk_softc *uk = device_private(self); struct scsipibus_attach_args *sa = aux; struct scsipi_periph *periph = sa->sa_periph; SC_DEBUG(periph, SCSIPI_DB2, ("ukattach: ")); /* * Store information needed to contact our base driver */ uk->sc_periph = periph; periph->periph_dev = &uk->sc_dev; printf("\n"); } static int ukactivate(struct device *self, enum devact act) { int rv = 0; switch (act) { case DVACT_ACTIVATE: rv = EOPNOTSUPP; break; case DVACT_DEACTIVATE: /* * Nothing to do; we key off the device's DVF_ACTIVE. */ break; } return (rv); } static int ukdetach(struct device *self, int flags) { /*struct uk_softc *uk = device_private(self);*/ int cmaj, mn; /* locate the major number */ cmaj = cdevsw_lookup_major(&uk_cdevsw); /* Nuke the vnodes for any open instances */ mn = device_unit(self); vdevgone(cmaj, mn, mn, VCHR); return (0); } /* * open the device. */ static int ukopen(dev_t dev, int flag, int fmt, struct lwp *l) { int unit, error; struct uk_softc *uk; struct scsipi_periph *periph; struct scsipi_adapter *adapt; unit = UKUNIT(dev); if (unit >= uk_cd.cd_ndevs) return (ENXIO); uk = uk_cd.cd_devs[unit]; if (uk == NULL) return (ENXIO); periph = uk->sc_periph; adapt = periph->periph_channel->chan_adapter; SC_DEBUG(periph, SCSIPI_DB1, ("ukopen: dev=0x%x (unit %d (of %d))\n", dev, unit, uk_cd.cd_ndevs)); /* * Only allow one at a time */ if (periph->periph_flags & PERIPH_OPEN) { printf("%s: already open\n", uk->sc_dev.dv_xname); return (EBUSY); } if ((error = scsipi_adapter_addref(adapt)) != 0) return (error); periph->periph_flags |= PERIPH_OPEN; SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); return (0); } /* * close the device.. only called if we are the LAST * occurence of an open device */ static int ukclose(dev_t dev, int flag, int fmt, struct lwp *l) { struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; struct scsipi_periph *periph = uk->sc_periph; struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; SC_DEBUG(uk->sc_periph, SCSIPI_DB1, ("closing\n")); scsipi_wait_drain(periph); scsipi_adapter_delref(adapt); periph->periph_flags &= ~PERIPH_OPEN; return (0); } /* * Perform special action on behalf of the user * Only does generic scsi ioctls. */ static int ukioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) { register struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; return (scsipi_do_ioctl(uk->sc_periph, dev, cmd, addr, flag, l)); }