uk.c revision 1.27.10.1
1 /* $NetBSD: uk.c,v 1.27.10.1 1999/10/19 17:39:46 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Dummy driver for a device we can't identify. 41 * Originally by Julian Elischer (julian (at) tfs.com) 42 */ 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 48 #include <sys/errno.h> 49 #include <sys/ioctl.h> 50 #include <sys/device.h> 51 #include <sys/conf.h> 52 53 #include <dev/scsipi/scsi_all.h> 54 #include <dev/scsipi/scsipi_all.h> 55 #include <dev/scsipi/scsiconf.h> 56 57 #define UKUNIT(z) (minor(z)) 58 59 struct uk_softc { 60 struct device sc_dev; 61 62 struct scsipi_periph *sc_periph; /* all the inter level info */ 63 }; 64 65 int ukmatch __P((struct device *, struct cfdata *, void *)); 66 void ukattach __P((struct device *, struct device *, void *)); 67 68 struct cfattach uk_scsibus_ca = { 69 sizeof(struct uk_softc), ukmatch, ukattach 70 }; 71 struct cfattach uk_atapibus_ca = { 72 sizeof(struct uk_softc), ukmatch, ukattach 73 }; 74 75 extern struct cfdriver uk_cd; 76 77 cdev_decl(uk); 78 79 int 80 ukmatch(parent, match, aux) 81 struct device *parent; 82 struct cfdata *match; 83 void *aux; 84 { 85 86 return (1); 87 } 88 89 /* 90 * The routine called by the low level scsi routine when it discovers 91 * a device suitable for this driver. 92 */ 93 void 94 ukattach(parent, self, aux) 95 struct device *parent, *self; 96 void *aux; 97 { 98 struct uk_softc *uk = (void *)self; 99 struct scsipibus_attach_args *sa = aux; 100 struct scsipi_periph *periph = sa->sa_periph; 101 102 SC_DEBUG(sc_link, SDEV_DB2, ("ukattach: ")); 103 104 /* 105 * Store information needed to contact our base driver 106 */ 107 uk->sc_periph = periph; 108 periph->periph_dev = &uk->sc_dev; 109 110 printf("\n"); 111 printf("%s: unknown device\n", uk->sc_dev.dv_xname); 112 } 113 114 /* 115 * open the device. 116 */ 117 int 118 ukopen(dev, flag, fmt, p) 119 dev_t dev; 120 int flag, fmt; 121 struct proc *p; 122 { 123 int unit, error; 124 struct uk_softc *uk; 125 struct scsipi_periph *periph; 126 struct scsipi_adapter *adapt; 127 128 unit = UKUNIT(dev); 129 if (unit >= uk_cd.cd_ndevs) 130 return (ENXIO); 131 uk = uk_cd.cd_devs[unit]; 132 if (uk == NULL) 133 return (ENXIO); 134 135 periph = uk->sc_periph; 136 adapt = periph->periph_channel->chan_adapter; 137 138 SC_DEBUG(sc_link, SDEV_DB1, 139 ("ukopen: dev=0x%x (unit %d (of %d))\n", dev, unit, 140 uk_cd.cd_ndevs)); 141 142 /* 143 * Only allow one at a time 144 */ 145 if (periph->periph_flags & PERIPH_OPEN) { 146 printf("%s: already open\n", uk->sc_dev.dv_xname); 147 return (EBUSY); 148 } 149 150 if ((error = scsipi_adapter_addref(adapt)) != 0) 151 return (error); 152 periph->periph_flags |= PERIPH_OPEN; 153 154 SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n")); 155 return (0); 156 } 157 158 /* 159 * close the device.. only called if we are the LAST 160 * occurence of an open device 161 */ 162 int 163 ukclose(dev, flag, fmt, p) 164 dev_t dev; 165 int flag, fmt; 166 struct proc *p; 167 { 168 struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; 169 struct scsipi_periph *periph = uk->sc_periph; 170 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 171 172 SC_DEBUG(uk->sc_link, SDEV_DB1, ("closing\n")); 173 174 scsipi_wait_drain(periph); 175 176 scsipi_adapter_delref(adapt); 177 periph->periph_flags &= ~PERIPH_OPEN; 178 179 return (0); 180 } 181 182 /* 183 * Perform special action on behalf of the user 184 * Only does generic scsi ioctls. 185 */ 186 int 187 ukioctl(dev, cmd, addr, flag, p) 188 dev_t dev; 189 u_long cmd; 190 caddr_t addr; 191 int flag; 192 struct proc *p; 193 { 194 register struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; 195 196 return (scsipi_do_ioctl(uk->sc_periph, dev, cmd, addr, flag, p)); 197 } 198
Indexes created Fri Oct 03 02:09:57 GMT 2025