uk.c revision 1.23
1 /* $NetBSD: uk.c,v 1.23 1998/08/17 00:49:04 mycroft 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 #ifdef __BROKEN_INDIRECT_CONFIG 66 int ukmatch __P((struct device *, void *, void *)); 67 #else 68 int ukmatch __P((struct device *, struct cfdata *, void *)); 69 #endif 70 void ukattach __P((struct device *, struct device *, void *)); 71 72 struct cfattach uk_ca = { 73 sizeof(struct uk_softc), ukmatch, ukattach 74 }; 75 76 extern struct cfdriver uk_cd; 77 78 /* 79 * This driver is so simple it uses all the default services 80 */ 81 struct scsipi_device uk_switch = { 82 NULL, 83 NULL, 84 NULL, 85 NULL, 86 }; 87 88 cdev_decl(uk); 89 90 int 91 ukmatch(parent, match, aux) 92 struct device *parent; 93 #ifdef __BROKEN_INDIRECT_CONFIG 94 void *match; 95 #else 96 struct cfdata *match; 97 #endif 98 void *aux; 99 { 100 101 return (1); 102 } 103 104 /* 105 * The routine called by the low level scsi routine when it discovers 106 * a device suitable for this driver. 107 */ 108 void 109 ukattach(parent, self, aux) 110 struct device *parent, *self; 111 void *aux; 112 { 113 struct uk_softc *uk = (void *)self; 114 struct scsipibus_attach_args *sa = aux; 115 struct scsipi_link *sc_link = sa->sa_sc_link; 116 117 SC_DEBUG(sc_link, SDEV_DB2, ("ukattach: ")); 118 119 /* 120 * Store information needed to contact our base driver 121 */ 122 uk->sc_link = sc_link; 123 sc_link->device = &uk_switch; 124 sc_link->device_softc = uk; 125 sc_link->openings = 1; 126 127 printf("\n"); 128 printf("%s: unknown device\n", uk->sc_dev.dv_xname); 129 } 130 131 /* 132 * open the device. 133 */ 134 int 135 ukopen(dev, flag, fmt, p) 136 dev_t dev; 137 int flag, fmt; 138 struct proc *p; 139 { 140 int unit; 141 struct uk_softc *uk; 142 struct scsipi_link *sc_link; 143 144 unit = UKUNIT(dev); 145 if (unit >= uk_cd.cd_ndevs) 146 return (ENXIO); 147 uk = uk_cd.cd_devs[unit]; 148 if (uk == NULL) 149 return (ENXIO); 150 151 sc_link = uk->sc_link; 152 153 SC_DEBUG(sc_link, SDEV_DB1, 154 ("ukopen: dev=0x%x (unit %d (of %d))\n", dev, unit, 155 uk_cd.cd_ndevs)); 156 157 /* 158 * Only allow one at a time 159 */ 160 if (sc_link->flags & SDEV_OPEN) { 161 printf("%s: already open\n", uk->sc_dev.dv_xname); 162 return (EBUSY); 163 } 164 165 sc_link->flags |= SDEV_OPEN; 166 167 SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n")); 168 return (0); 169 } 170 171 /* 172 * close the device.. only called if we are the LAST 173 * occurence of an open device 174 */ 175 int 176 ukclose(dev, flag, fmt, p) 177 dev_t dev; 178 int flag, fmt; 179 struct proc *p; 180 { 181 struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; 182 183 SC_DEBUG(uk->sc_link, SDEV_DB1, ("closing\n")); 184 uk->sc_link->flags &= ~SDEV_OPEN; 185 186 return (0); 187 } 188 189 /* 190 * Perform special action on behalf of the user 191 * Only does generic scsi ioctls. 192 */ 193 int 194 ukioctl(dev, cmd, addr, flag, p) 195 dev_t dev; 196 u_long cmd; 197 caddr_t addr; 198 int flag; 199 struct proc *p; 200 { 201 register struct uk_softc *uk = uk_cd.cd_devs[UKUNIT(dev)]; 202 203 return (scsipi_do_ioctl(uk->sc_link, dev, cmd, addr, flag, p)); 204 } 205
Indexes created Thu Sep 25 08:09:54 GMT 2025