uk.c revision 1.26
1 /* $NetBSD: uk.c,v 1.26 1998/11/20 00:35:40 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_link *sc_link; /* 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 /* 78 * This driver is so simple it uses all the default services 79 */ 80 struct scsipi_device uk_switch = { 81 NULL, 82 NULL, 83 NULL, 84 NULL, 85 }; 86 87 cdev_decl(uk); 88 89 int 90 ukmatch(parent, match, aux) 91 struct device *parent; 92 struct cfdata *match; 93 void *aux; 94 { 95 96 return (1); 97 } 98 99 /* 100 * The routine called by the low level scsi routine when it discovers 101 * a device suitable for this driver. 102 */ 103 void 104 ukattach(parent, self, aux) 105 struct device *parent, *self; 106 void *aux; 107 { 108 struct uk_softc *uk = (void *)self; 109 struct scsipibus_attach_args *sa = aux; 110 struct scsipi_link *sc_link = sa->sa_sc_link; 111 112 SC_DEBUG(sc_link, SDEV_DB2, ("ukattach: ")); 113 114 /* 115 * Store information needed to contact our base driver 116 */ 117 uk->sc_link = sc_link; 118 sc_link->device = &uk_switch; 119 sc_link->device_softc = uk; 120 sc_link->openings = 1; 121 122 printf("\n"); 123 printf("%s: unknown device\n", uk->sc_dev.dv_xname); 124 } 125 126 /* 127 * open the device. 128 */ 129 int 130 ukopen(dev, flag, fmt, p) 131 dev_t dev; 132 int flag, fmt; 133 struct proc *p; 134 { 135 int unit, error; 136 struct uk_softc *uk; 137 struct scsipi_link *sc_link; 138 139 unit = UKUNIT(dev); 140 if (unit >= uk_cd.cd_ndevs) 141 return (ENXIO); 142 uk = uk_cd.cd_devs[unit]; 143 if (uk == NULL) 144 return (ENXIO); 145 146 sc_link = uk->sc_link; 147 148 SC_DEBUG(sc_link, SDEV_DB1, 149 ("ukopen: dev=0x%x (unit %d (of %d))\n", dev, unit, 150 uk_cd.cd_ndevs)); 151 152 /* 153 * Only allow one at a time 154 */ 155 if (sc_link->flags & SDEV_OPEN) { 156 printf("%s: already open\n", uk->sc_dev.dv_xname); 157 return (EBUSY); 158 } 159 160 if ((error = scsipi_adapter_addref(sc_link)) != 0) 161 return (error); 162 sc_link->flags |= SDEV_OPEN; 163 164 SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n")); 165 return (0); 166 } 167 168 /* 169 * close the device.. only called if we are the LAST 170 * occurence of an open device 171 */ 172 int 173 ukclose(dev, flag, fmt, p) 174 dev_t dev; 175 int flag, fmt; 176 struct proc *p; 177 { 178 struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; 179 180 SC_DEBUG(uk->sc_link, SDEV_DB1, ("closing\n")); 181 scsipi_adapter_delref(uk->sc_link); 182 uk->sc_link->flags &= ~SDEV_OPEN; 183 184 return (0); 185 } 186 187 /* 188 * Perform special action on behalf of the user 189 * Only does generic scsi ioctls. 190 */ 191 int 192 ukioctl(dev, cmd, addr, flag, p) 193 dev_t dev; 194 u_long cmd; 195 caddr_t addr; 196 int flag; 197 struct proc *p; 198 { 199 register struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; 200 201 return (scsipi_do_ioctl(uk->sc_link, dev, cmd, addr, flag, p)); 202 } 203
Indexes created Thu Sep 25 16:09:42 GMT 2025