ss.c revision 1.72.28.2
1 1.72.28.2 ad /* $NetBSD: ss.c,v 1.72.28.2 2007/07/29 12:50:24 ad Exp $ */ 2 1.72.28.2 ad 3 1.72.28.2 ad /* 4 1.72.28.2 ad * Copyright (c) 1995 Kenneth Stailey. All rights reserved. 5 1.72.28.2 ad * modified for configurable scanner support by Joachim Koenig 6 1.72.28.2 ad * 7 1.72.28.2 ad * Redistribution and use in source and binary forms, with or without 8 1.72.28.2 ad * modification, are permitted provided that the following conditions 9 1.72.28.2 ad * are met: 10 1.72.28.2 ad * 1. Redistributions of source code must retain the above copyright 11 1.72.28.2 ad * notice, this list of conditions and the following disclaimer. 12 1.72.28.2 ad * 2. Redistributions in binary form must reproduce the above copyright 13 1.72.28.2 ad * notice, this list of conditions and the following disclaimer in the 14 1.72.28.2 ad * documentation and/or other materials provided with the distribution. 15 1.72.28.2 ad * 3. All advertising materials mentioning features or use of this software 16 1.72.28.2 ad * must display the following acknowledgement: 17 1.72.28.2 ad * This product includes software developed by Kenneth Stailey. 18 1.72.28.2 ad * 4. The name of the author may not be used to endorse or promote products 19 1.72.28.2 ad * derived from this software without specific prior written permission. 20 1.72.28.2 ad * 21 1.72.28.2 ad * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 1.72.28.2 ad * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 1.72.28.2 ad * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 1.72.28.2 ad * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 1.72.28.2 ad * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 1.72.28.2 ad * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 1.72.28.2 ad * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 1.72.28.2 ad * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 1.72.28.2 ad * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 1.72.28.2 ad * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 1.72.28.2 ad */ 32 1.72.28.2 ad 33 1.72.28.2 ad #include <sys/cdefs.h> 34 1.72.28.2 ad __KERNEL_RCSID(0, "$NetBSD: ss.c,v 1.72.28.2 2007/07/29 12:50:24 ad Exp $"); 35 1.72.28.2 ad 36 1.72.28.2 ad #include <sys/param.h> 37 1.72.28.2 ad #include <sys/systm.h> 38 1.72.28.2 ad #include <sys/fcntl.h> 39 1.72.28.2 ad #include <sys/errno.h> 40 1.72.28.2 ad #include <sys/ioctl.h> 41 1.72.28.2 ad #include <sys/malloc.h> 42 1.72.28.2 ad #include <sys/buf.h> 43 1.72.28.2 ad #include <sys/bufq.h> 44 1.72.28.2 ad #include <sys/proc.h> 45 1.72.28.2 ad #include <sys/user.h> 46 1.72.28.2 ad #include <sys/device.h> 47 1.72.28.2 ad #include <sys/conf.h> 48 1.72.28.2 ad #include <sys/vnode.h> 49 1.72.28.2 ad #include <sys/scanio.h> 50 1.72.28.2 ad 51 1.72.28.2 ad #include <dev/scsipi/scsi_all.h> 52 1.72.28.2 ad #include <dev/scsipi/scsipi_all.h> 53 1.72.28.2 ad #include <dev/scsipi/scsi_scanner.h> 54 1.72.28.2 ad #include <dev/scsipi/scsiconf.h> 55 1.72.28.2 ad #include <dev/scsipi/ssvar.h> 56 1.72.28.2 ad 57 1.72.28.2 ad #include <dev/scsipi/ss_mustek.h> 58 1.72.28.2 ad 59 1.72.28.2 ad #define SSMODE(z) ( minor(z) & 0x03) 60 1.72.28.2 ad #define SSUNIT(z) ((minor(z) >> 4) ) 61 1.72.28.2 ad #define SSNMINOR 16 62 1.72.28.2 ad 63 1.72.28.2 ad /* 64 1.72.28.2 ad * If the mode is 3 (e.g. minor = 3,7,11,15) 65 1.72.28.2 ad * then the device has been openned to set defaults 66 1.72.28.2 ad * This mode does NOT ALLOW I/O, only ioctls 67 1.72.28.2 ad */ 68 1.72.28.2 ad #define MODE_REWIND 0 69 1.72.28.2 ad #define MODE_NONREWIND 1 70 1.72.28.2 ad #define MODE_CONTROL 3 71 1.72.28.2 ad 72 1.72.28.2 ad static int ssmatch(struct device *, struct cfdata *, void *); 73 1.72.28.2 ad static void ssattach(struct device *, struct device *, void *); 74 1.72.28.2 ad static int ssdetach(struct device *self, int flags); 75 1.72.28.2 ad static int ssactivate(struct device *self, enum devact act); 76 1.72.28.2 ad 77 1.72.28.2 ad CFATTACH_DECL(ss, sizeof(struct ss_softc), 78 1.72.28.2 ad ssmatch, ssattach, ssdetach, ssactivate); 79 1.72.28.2 ad 80 1.72.28.2 ad extern struct cfdriver ss_cd; 81 1.72.28.2 ad 82 1.72.28.2 ad static dev_type_open(ssopen); 83 1.72.28.2 ad static dev_type_close(ssclose); 84 1.72.28.2 ad static dev_type_read(ssread); 85 1.72.28.2 ad static dev_type_ioctl(ssioctl); 86 1.72.28.2 ad 87 1.72.28.2 ad const struct cdevsw ss_cdevsw = { 88 1.72.28.2 ad ssopen, ssclose, ssread, nowrite, ssioctl, 89 1.72.28.2 ad nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 90 1.72.28.2 ad }; 91 1.72.28.2 ad 92 1.72.28.2 ad static void ssstrategy(struct buf *); 93 1.72.28.2 ad static void ssstart(struct scsipi_periph *); 94 1.72.28.2 ad static void ssdone(struct scsipi_xfer *, int); 95 1.72.28.2 ad static void ssminphys(struct buf *); 96 1.72.28.2 ad 97 1.72.28.2 ad static const struct scsipi_periphsw ss_switch = { 98 1.72.28.2 ad NULL, 99 1.72.28.2 ad ssstart, 100 1.72.28.2 ad NULL, 101 1.72.28.2 ad ssdone, 102 1.72.28.2 ad }; 103 1.72.28.2 ad 104 1.72.28.2 ad static const struct scsipi_inquiry_pattern ss_patterns[] = { 105 1.72.28.2 ad {T_SCANNER, T_FIXED, 106 1.72.28.2 ad "", "", ""}, 107 1.72.28.2 ad {T_SCANNER, T_REMOV, 108 1.72.28.2 ad "", "", ""}, 109 1.72.28.2 ad {T_PROCESSOR, T_FIXED, 110 1.72.28.2 ad "HP ", "C1130A ", ""}, 111 1.72.28.2 ad {T_PROCESSOR, T_FIXED, 112 1.72.28.2 ad "HP ", "C1750A ", ""}, 113 1.72.28.2 ad {T_PROCESSOR, T_FIXED, 114 1.72.28.2 ad "HP ", "C2500A ", ""}, 115 1.72.28.2 ad {T_PROCESSOR, T_FIXED, 116 1.72.28.2 ad "HP ", "C2520A ", ""}, 117 1.72.28.2 ad {T_PROCESSOR, T_FIXED, 118 1.72.28.2 ad "HP ", "C5110A ", ""}, 119 1.72.28.2 ad {T_PROCESSOR, T_FIXED, 120 1.72.28.2 ad "HP ", "C7670A ", ""}, 121 1.72.28.2 ad {T_PROCESSOR, T_FIXED, 122 1.72.28.2 ad "HP ", "", ""}, 123 1.72.28.2 ad }; 124 1.72.28.2 ad 125 1.72.28.2 ad static int 126 1.72.28.2 ad ssmatch(struct device *parent, struct cfdata *match, 127 1.72.28.2 ad void *aux) 128 1.72.28.2 ad { 129 1.72.28.2 ad struct scsipibus_attach_args *sa = aux; 130 1.72.28.2 ad int priority; 131 1.72.28.2 ad 132 1.72.28.2 ad (void)scsipi_inqmatch(&sa->sa_inqbuf, 133 1.72.28.2 ad ss_patterns, sizeof(ss_patterns) / sizeof(ss_patterns[0]), 134 1.72.28.2 ad sizeof(ss_patterns[0]), &priority); 135 1.72.28.2 ad return (priority); 136 1.72.28.2 ad } 137 1.72.28.2 ad 138 1.72.28.2 ad /* 139 1.72.28.2 ad * The routine called by the low level scsi routine when it discovers 140 1.72.28.2 ad * A device suitable for this driver 141 1.72.28.2 ad * If it is a know special, call special attach routine to install 142 1.72.28.2 ad * special handlers into the ss_softc structure 143 1.72.28.2 ad */ 144 1.72.28.2 ad static void 145 1.72.28.2 ad ssattach(struct device *parent, struct device *self, void *aux) 146 1.72.28.2 ad { 147 1.72.28.2 ad struct ss_softc *ss = device_private(self); 148 1.72.28.2 ad struct scsipibus_attach_args *sa = aux; 149 1.72.28.2 ad struct scsipi_periph *periph = sa->sa_periph; 150 1.72.28.2 ad 151 1.72.28.2 ad SC_DEBUG(periph, SCSIPI_DB2, ("ssattach: ")); 152 1.72.28.2 ad 153 1.72.28.2 ad ss->flags |= SSF_AUTOCONF; 154 1.72.28.2 ad 155 1.72.28.2 ad /* 156 1.72.28.2 ad * Store information needed to contact our base driver 157 1.72.28.2 ad */ 158 1.72.28.2 ad ss->sc_periph = periph; 159 1.72.28.2 ad periph->periph_dev = &ss->sc_dev; 160 1.72.28.2 ad periph->periph_switch = &ss_switch; 161 1.72.28.2 ad 162 1.72.28.2 ad printf("\n"); 163 1.72.28.2 ad 164 1.72.28.2 ad /* 165 1.72.28.2 ad * Set up the buf queue for this device 166 1.72.28.2 ad */ 167 1.72.28.2 ad bufq_alloc(&ss->buf_queue, "fcfs", 0); 168 1.72.28.2 ad 169 1.72.28.2 ad callout_init(&ss->sc_callout, 0); 170 1.72.28.2 ad 171 1.72.28.2 ad /* 172 1.72.28.2 ad * look for non-standard scanners with help of the quirk table 173 1.72.28.2 ad * and install functions for special handling 174 1.72.28.2 ad */ 175 1.72.28.2 ad SC_DEBUG(periph, SCSIPI_DB2, ("ssattach:\n")); 176 1.72.28.2 ad if (memcmp(sa->sa_inqbuf.vendor, "MUSTEK", 6) == 0) 177 1.72.28.2 ad mustek_attach(ss, sa); 178 1.72.28.2 ad if (memcmp(sa->sa_inqbuf.vendor, "HP ", 8) == 0 && 179 1.72.28.2 ad memcmp(sa->sa_inqbuf.product, "ScanJet 5300C", 13) != 0) 180 1.72.28.2 ad scanjet_attach(ss, sa); 181 1.72.28.2 ad if (ss->special == NULL) { 182 1.72.28.2 ad /* XXX add code to restart a SCSI2 scanner, if any */ 183 1.72.28.2 ad } 184 1.72.28.2 ad 185 1.72.28.2 ad ss->flags &= ~SSF_AUTOCONF; 186 1.72.28.2 ad } 187 1.72.28.2 ad 188 1.72.28.2 ad static int 189 1.72.28.2 ad ssdetach(struct device *self, int flags) 190 1.72.28.2 ad { 191 1.72.28.2 ad struct ss_softc *ss = device_private(self); 192 1.72.28.2 ad int s, cmaj, mn; 193 1.72.28.2 ad 194 1.72.28.2 ad /* locate the major number */ 195 1.72.28.2 ad cmaj = cdevsw_lookup_major(&ss_cdevsw); 196 1.72.28.2 ad 197 1.72.28.2 ad /* kill any pending restart */ 198 1.72.28.2 ad callout_stop(&ss->sc_callout); 199 1.72.28.2 ad 200 1.72.28.2 ad s = splbio(); 201 1.72.28.2 ad 202 1.72.28.2 ad /* Kill off any queued buffers. */ 203 1.72.28.2 ad bufq_drain(ss->buf_queue); 204 1.72.28.2 ad 205 1.72.28.2 ad bufq_free(ss->buf_queue); 206 1.72.28.2 ad 207 1.72.28.2 ad /* Kill off any pending commands. */ 208 1.72.28.2 ad scsipi_kill_pending(ss->sc_periph); 209 1.72.28.2 ad 210 1.72.28.2 ad splx(s); 211 1.72.28.2 ad 212 1.72.28.2 ad /* Nuke the vnodes for any open instances */ 213 1.72.28.2 ad mn = SSUNIT(device_unit(self)); 214 1.72.28.2 ad vdevgone(cmaj, mn, mn+SSNMINOR-1, VCHR); 215 1.72.28.2 ad 216 1.72.28.2 ad return (0); 217 1.72.28.2 ad } 218 1.72.28.2 ad 219 1.72.28.2 ad static int 220 1.72.28.2 ad ssactivate(struct device *self, enum devact act) 221 1.72.28.2 ad { 222 1.72.28.2 ad int rv = 0; 223 1.72.28.2 ad 224 1.72.28.2 ad switch (act) { 225 1.72.28.2 ad case DVACT_ACTIVATE: 226 1.72.28.2 ad rv = EOPNOTSUPP; 227 1.72.28.2 ad break; 228 1.72.28.2 ad 229 1.72.28.2 ad case DVACT_DEACTIVATE: 230 1.72.28.2 ad /* 231 1.72.28.2 ad * Nothing to do; we key off the device's DVF_ACTIVE. 232 1.72.28.2 ad */ 233 1.72.28.2 ad break; 234 1.72.28.2 ad } 235 1.72.28.2 ad return (rv); 236 1.72.28.2 ad } 237 1.72.28.2 ad 238 1.72.28.2 ad /* 239 1.72.28.2 ad * open the device. 240 1.72.28.2 ad */ 241 1.72.28.2 ad static int 242 1.72.28.2 ad ssopen(dev_t dev, int flag, int mode, struct lwp *l) 243 1.72.28.2 ad { 244 1.72.28.2 ad int unit; 245 1.72.28.2 ad u_int ssmode; 246 1.72.28.2 ad int error; 247 1.72.28.2 ad struct ss_softc *ss; 248 1.72.28.2 ad struct scsipi_periph *periph; 249 1.72.28.2 ad struct scsipi_adapter *adapt; 250 1.72.28.2 ad 251 1.72.28.2 ad unit = SSUNIT(dev); 252 1.72.28.2 ad if (unit >= ss_cd.cd_ndevs) 253 1.72.28.2 ad return (ENXIO); 254 1.72.28.2 ad ss = ss_cd.cd_devs[unit]; 255 1.72.28.2 ad if (!ss) 256 1.72.28.2 ad return (ENXIO); 257 1.72.28.2 ad 258 1.72.28.2 ad if (!device_is_active(&ss->sc_dev)) 259 1.72.28.2 ad return (ENODEV); 260 1.72.28.2 ad 261 1.72.28.2 ad ssmode = SSMODE(dev); 262 1.72.28.2 ad 263 1.72.28.2 ad periph = ss->sc_periph; 264 1.72.28.2 ad adapt = periph->periph_channel->chan_adapter; 265 1.72.28.2 ad 266 1.72.28.2 ad SC_DEBUG(periph, SCSIPI_DB1, ("open: dev=0x%x (unit %d (of %d))\n", dev, 267 1.72.28.2 ad unit, ss_cd.cd_ndevs)); 268 1.72.28.2 ad 269 1.72.28.2 ad if (periph->periph_flags & PERIPH_OPEN) { 270 1.72.28.2 ad printf("%s: already open\n", ss->sc_dev.dv_xname); 271 1.72.28.2 ad return (EBUSY); 272 1.72.28.2 ad } 273 1.72.28.2 ad 274 1.72.28.2 ad if ((error = scsipi_adapter_addref(adapt)) != 0) 275 1.72.28.2 ad return (error); 276 1.72.28.2 ad 277 1.72.28.2 ad /* 278 1.72.28.2 ad * Catch any unit attention errors. 279 1.72.28.2 ad * 280 1.72.28.2 ad * XS_CTL_IGNORE_MEDIA_CHANGE: when you have an ADF, some scanners 281 1.72.28.2 ad * consider paper to be a changeable media 282 1.72.28.2 ad * 283 1.72.28.2 ad */ 284 1.72.28.2 ad error = scsipi_test_unit_ready(periph, 285 1.72.28.2 ad XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_IGNORE_ILLEGAL_REQUEST | 286 1.72.28.2 ad (ssmode == MODE_CONTROL ? XS_CTL_IGNORE_NOT_READY : 0)); 287 1.72.28.2 ad if (error) 288 1.72.28.2 ad goto bad; 289 1.72.28.2 ad 290 1.72.28.2 ad periph->periph_flags |= PERIPH_OPEN; /* unit attn now errors */ 291 1.72.28.2 ad 292 1.72.28.2 ad /* 293 1.72.28.2 ad * If the mode is 3 (e.g. minor = 3,7,11,15) 294 1.72.28.2 ad * then the device has been opened to set defaults 295 1.72.28.2 ad * This mode does NOT ALLOW I/O, only ioctls 296 1.72.28.2 ad */ 297 1.72.28.2 ad if (ssmode == MODE_CONTROL) 298 1.72.28.2 ad return (0); 299 1.72.28.2 ad 300 1.72.28.2 ad SC_DEBUG(periph, SCSIPI_DB2, ("open complete\n")); 301 1.72.28.2 ad return (0); 302 1.72.28.2 ad 303 1.72.28.2 ad bad: 304 1.72.28.2 ad scsipi_adapter_delref(adapt); 305 1.72.28.2 ad periph->periph_flags &= ~PERIPH_OPEN; 306 1.72.28.2 ad return (error); 307 1.72.28.2 ad } 308 1.72.28.2 ad 309 1.72.28.2 ad /* 310 1.72.28.2 ad * close the device.. only called if we are the LAST 311 1.72.28.2 ad * occurence of an open device 312 1.72.28.2 ad */ 313 1.72.28.2 ad static int 314 1.72.28.2 ad ssclose(dev_t dev, int flag, int mode, struct lwp *l) 315 1.72.28.2 ad { 316 1.72.28.2 ad struct ss_softc *ss = ss_cd.cd_devs[SSUNIT(dev)]; 317 1.72.28.2 ad struct scsipi_periph *periph = ss->sc_periph; 318 1.72.28.2 ad struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 319 1.72.28.2 ad int error; 320 1.72.28.2 ad 321 1.72.28.2 ad SC_DEBUG(ss->sc_periph, SCSIPI_DB1, ("closing\n")); 322 1.72.28.2 ad 323 1.72.28.2 ad if (SSMODE(dev) == MODE_REWIND) { 324 1.72.28.2 ad if (ss->special && ss->special->rewind_scanner) { 325 1.72.28.2 ad /* call special handler to rewind/abort scan */ 326 1.72.28.2 ad error = (ss->special->rewind_scanner)(ss); 327 1.72.28.2 ad if (error) 328 1.72.28.2 ad return (error); 329 1.72.28.2 ad } else { 330 1.72.28.2 ad /* XXX add code to restart a SCSI2 scanner, if any */ 331 1.72.28.2 ad } 332 1.72.28.2 ad ss->sio.scan_window_size = 0; 333 1.72.28.2 ad ss->flags &= ~SSF_TRIGGERED; 334 1.72.28.2 ad } 335 1.72.28.2 ad 336 1.72.28.2 ad scsipi_wait_drain(periph); 337 1.72.28.2 ad 338 1.72.28.2 ad scsipi_adapter_delref(adapt); 339 1.72.28.2 ad periph->periph_flags &= ~PERIPH_OPEN; 340 1.72.28.2 ad 341 1.72.28.2 ad return (0); 342 1.72.28.2 ad } 343 1.72.28.2 ad 344 1.72.28.2 ad /* 345 1.72.28.2 ad * trim the size of the transfer if needed, 346 1.72.28.2 ad * called by physio 347 1.72.28.2 ad * basically the smaller of our min and the scsi driver's 348 1.72.28.2 ad * minphys 349 1.72.28.2 ad */ 350 1.72.28.2 ad static void 351 1.72.28.2 ad ssminphys(struct buf *bp) 352 1.72.28.2 ad { 353 1.72.28.2 ad struct ss_softc *ss = ss_cd.cd_devs[SSUNIT(bp->b_dev)]; 354 1.72.28.2 ad struct scsipi_periph *periph = ss->sc_periph; 355 1.72.28.2 ad 356 1.72.28.2 ad scsipi_adapter_minphys(periph->periph_channel, bp); 357 1.72.28.2 ad 358 1.72.28.2 ad /* 359 1.72.28.2 ad * trim the transfer further for special devices this is 360 1.72.28.2 ad * because some scanners only read multiples of a line at a 361 1.72.28.2 ad * time, also some cannot disconnect, so the read must be 362 1.72.28.2 ad * short enough to happen quickly 363 1.72.28.2 ad */ 364 1.72.28.2 ad if (ss->special && ss->special->minphys) 365 1.72.28.2 ad (ss->special->minphys)(ss, bp); 366 1.72.28.2 ad } 367 1.72.28.2 ad 368 1.72.28.2 ad /* 369 1.72.28.2 ad * Do a read on a device for a user process. 370 1.72.28.2 ad * Prime scanner at start of read, check uio values, call ssstrategy 371 1.72.28.2 ad * via physio for the actual transfer. 372 1.72.28.2 ad */ 373 1.72.28.2 ad static int 374 1.72.28.2 ad ssread(dev_t dev, struct uio *uio, int flag) 375 1.72.28.2 ad { 376 1.72.28.2 ad struct ss_softc *ss = ss_cd.cd_devs[SSUNIT(dev)]; 377 1.72.28.2 ad int error; 378 1.72.28.2 ad 379 1.72.28.2 ad if (!device_is_active(&ss->sc_dev)) 380 1.72.28.2 ad return (ENODEV); 381 1.72.28.2 ad 382 1.72.28.2 ad /* if the scanner has not yet been started, do it now */ 383 1.72.28.2 ad if (!(ss->flags & SSF_TRIGGERED)) { 384 1.72.28.2 ad if (ss->special && ss->special->trigger_scanner) { 385 1.72.28.2 ad error = (ss->special->trigger_scanner)(ss); 386 1.72.28.2 ad if (error) 387 1.72.28.2 ad return (error); 388 1.72.28.2 ad } 389 1.72.28.2 ad ss->flags |= SSF_TRIGGERED; 390 1.72.28.2 ad } 391 1.72.28.2 ad 392 1.72.28.2 ad return (physio(ssstrategy, NULL, dev, B_READ, ssminphys, uio)); 393 1.72.28.2 ad } 394 1.72.28.2 ad 395 1.72.28.2 ad /* 396 1.72.28.2 ad * Actually translate the requested transfer into one the physical 397 1.72.28.2 ad * driver can understand The transfer is described by a buf and will 398 1.72.28.2 ad * include only one physical transfer. 399 1.72.28.2 ad */ 400 1.72.28.2 ad static void 401 1.72.28.2 ad ssstrategy(struct buf *bp) 402 1.72.28.2 ad { 403 1.72.28.2 ad struct ss_softc *ss = ss_cd.cd_devs[SSUNIT(bp->b_dev)]; 404 1.72.28.2 ad struct scsipi_periph *periph = ss->sc_periph; 405 1.72.28.2 ad int s; 406 1.72.28.2 ad 407 1.72.28.2 ad SC_DEBUG(ss->sc_periph, SCSIPI_DB1, 408 1.72.28.2 ad ("ssstrategy %d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 409 1.72.28.2 ad 410 1.72.28.2 ad /* 411 1.72.28.2 ad * If the device has been made invalid, error out 412 1.72.28.2 ad */ 413 1.72.28.2 ad if (!device_is_active(&ss->sc_dev)) { 414 1.72.28.2 ad if (periph->periph_flags & PERIPH_OPEN) 415 1.72.28.2 ad bp->b_error = EIO; 416 1.72.28.2 ad else 417 1.72.28.2 ad bp->b_error = ENODEV; 418 1.72.28.2 ad goto done; 419 1.72.28.2 ad } 420 1.72.28.2 ad 421 1.72.28.2 ad /* If negative offset, error */ 422 1.72.28.2 ad if (bp->b_blkno < 0) { 423 1.72.28.2 ad bp->b_error = EINVAL; 424 1.72.28.2 ad goto done; 425 1.72.28.2 ad } 426 1.72.28.2 ad 427 1.72.28.2 ad if (bp->b_bcount > ss->sio.scan_window_size) 428 1.72.28.2 ad bp->b_bcount = ss->sio.scan_window_size; 429 1.72.28.2 ad 430 1.72.28.2 ad /* 431 1.72.28.2 ad * If it's a null transfer, return immediatly 432 1.72.28.2 ad */ 433 1.72.28.2 ad if (bp->b_bcount == 0) 434 1.72.28.2 ad goto done; 435 1.72.28.2 ad 436 1.72.28.2 ad s = splbio(); 437 1.72.28.2 ad 438 1.72.28.2 ad /* 439 1.72.28.2 ad * Place it in the queue of activities for this scanner 440 1.72.28.2 ad * at the end (a bit silly because we only have on user.. 441 1.72.28.2 ad * (but it could fork())) 442 1.72.28.2 ad */ 443 1.72.28.2 ad BUFQ_PUT(ss->buf_queue, bp); 444 1.72.28.2 ad 445 1.72.28.2 ad /* 446 1.72.28.2 ad * Tell the device to get going on the transfer if it's 447 1.72.28.2 ad * not doing anything, otherwise just wait for completion 448 1.72.28.2 ad * (All a bit silly if we're only allowing 1 open but..) 449 1.72.28.2 ad */ 450 1.72.28.2 ad ssstart(ss->sc_periph); 451 1.72.28.2 ad 452 1.72.28.2 ad splx(s); 453 1.72.28.2 ad return; 454 1.72.28.2 ad done: 455 1.72.28.2 ad /* 456 1.72.28.2 ad * Correctly set the buf to indicate a completed xfer 457 1.72.28.2 ad */ 458 1.72.28.2 ad bp->b_resid = bp->b_bcount; 459 1.72.28.2 ad biodone(bp); 460 1.72.28.2 ad } 461 1.72.28.2 ad 462 1.72.28.2 ad /* 463 1.72.28.2 ad * ssstart looks to see if there is a buf waiting for the device 464 1.72.28.2 ad * and that the device is not already busy. If both are true, 465 1.72.28.2 ad * It dequeues the buf and creates a scsi command to perform the 466 1.72.28.2 ad * transfer required. The transfer request will call scsipi_done 467 1.72.28.2 ad * on completion, which will in turn call this routine again 468 1.72.28.2 ad * so that the next queued transfer is performed. 469 1.72.28.2 ad * The bufs are queued by the strategy routine (ssstrategy) 470 1.72.28.2 ad * 471 1.72.28.2 ad * This routine is also called after other non-queued requests 472 1.72.28.2 ad * have been made of the scsi driver, to ensure that the queue 473 1.72.28.2 ad * continues to be drained. 474 1.72.28.2 ad * ssstart() is called at splbio 475 1.72.28.2 ad */ 476 1.72.28.2 ad static void 477 1.72.28.2 ad ssstart(struct scsipi_periph *periph) 478 1.72.28.2 ad { 479 1.72.28.2 ad struct ss_softc *ss = (void *)periph->periph_dev; 480 1.72.28.2 ad struct buf *bp; 481 1.72.28.2 ad 482 1.72.28.2 ad SC_DEBUG(periph, SCSIPI_DB2, ("ssstart ")); 483 1.72.28.2 ad /* 484 1.72.28.2 ad * See if there is a buf to do and we are not already 485 1.72.28.2 ad * doing one 486 1.72.28.2 ad */ 487 1.72.28.2 ad while (periph->periph_active < periph->periph_openings) { 488 1.72.28.2 ad /* if a special awaits, let it proceed first */ 489 1.72.28.2 ad if (periph->periph_flags & PERIPH_WAITING) { 490 1.72.28.2 ad periph->periph_flags &= ~PERIPH_WAITING; 491 1.72.28.2 ad wakeup((void *)periph); 492 1.72.28.2 ad return; 493 1.72.28.2 ad } 494 1.72.28.2 ad 495 1.72.28.2 ad /* 496 1.72.28.2 ad * See if there is a buf with work for us to do.. 497 1.72.28.2 ad */ 498 1.72.28.2 ad if ((bp = BUFQ_PEEK(ss->buf_queue)) == NULL) 499 1.72.28.2 ad return; 500 1.72.28.2 ad 501 1.72.28.2 ad if (ss->special && ss->special->read) { 502 1.72.28.2 ad (ss->special->read)(ss, bp); 503 1.72.28.2 ad } else { 504 1.72.28.2 ad /* generic scsi2 scanner read */ 505 1.72.28.2 ad /* XXX add code for SCSI2 scanner read */ 506 1.72.28.2 ad } 507 1.72.28.2 ad } 508 1.72.28.2 ad } 509 1.72.28.2 ad 510 1.72.28.2 ad void 511 1.72.28.2 ad ssrestart(void *v) 512 1.72.28.2 ad { 513 1.72.28.2 ad int s = splbio(); 514 1.72.28.2 ad ssstart((struct scsipi_periph *)v); 515 1.72.28.2 ad splx(s); 516 1.72.28.2 ad } 517 1.72.28.2 ad 518 1.72.28.2 ad static void 519 1.72.28.2 ad ssdone(struct scsipi_xfer *xs, int error) 520 1.72.28.2 ad { 521 1.72.28.2 ad struct buf *bp = xs->bp; 522 1.72.28.2 ad 523 1.72.28.2 ad if (bp) { 524 1.72.28.2 ad bp->b_error = error; 525 1.72.28.2 ad bp->b_resid = xs->resid; 526 1.72.28.2 ad biodone(bp); 527 1.72.28.2 ad } 528 1.72.28.2 ad } 529 1.72.28.2 ad 530 1.72.28.2 ad 531 1.72.28.2 ad /* 532 1.72.28.2 ad * Perform special action on behalf of the user; 533 1.72.28.2 ad * knows about the internals of this device 534 1.72.28.2 ad */ 535 1.72.28.2 ad int 536 1.72.28.2 ad ssioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 537 1.72.28.2 ad { 538 1.72.28.2 ad struct ss_softc *ss = ss_cd.cd_devs[SSUNIT(dev)]; 539 1.72.28.2 ad int error = 0; 540 1.72.28.2 ad struct scan_io *sio; 541 1.72.28.2 ad 542 1.72.28.2 ad if (!device_is_active(&ss->sc_dev)) 543 1.72.28.2 ad return (ENODEV); 544 1.72.28.2 ad 545 1.72.28.2 ad switch (cmd) { 546 1.72.28.2 ad case SCIOCGET: 547 1.72.28.2 ad if (ss->special && ss->special->get_params) { 548 1.72.28.2 ad /* call special handler */ 549 1.72.28.2 ad error = (ss->special->get_params)(ss); 550 1.72.28.2 ad if (error) 551 1.72.28.2 ad return (error); 552 1.72.28.2 ad } else { 553 1.72.28.2 ad /* XXX add code for SCSI2 scanner, if any */ 554 1.72.28.2 ad return (EOPNOTSUPP); 555 1.72.28.2 ad } 556 1.72.28.2 ad memcpy(addr, &ss->sio, sizeof(struct scan_io)); 557 1.72.28.2 ad break; 558 1.72.28.2 ad case SCIOCSET: 559 1.72.28.2 ad sio = (struct scan_io *)addr; 560 1.72.28.2 ad 561 1.72.28.2 ad if (ss->special && ss->special->set_params) { 562 1.72.28.2 ad /* call special handler */ 563 1.72.28.2 ad error = (ss->special->set_params)(ss, sio); 564 1.72.28.2 ad if (error) 565 1.72.28.2 ad return (error); 566 1.72.28.2 ad } else { 567 1.72.28.2 ad /* XXX add code for SCSI2 scanner, if any */ 568 1.72.28.2 ad return (EOPNOTSUPP); 569 1.72.28.2 ad } 570 1.72.28.2 ad break; 571 1.72.28.2 ad case SCIOCRESTART: 572 1.72.28.2 ad if (ss->special && ss->special->rewind_scanner ) { 573 1.72.28.2 ad /* call special handler */ 574 1.72.28.2 ad error = (ss->special->rewind_scanner)(ss); 575 1.72.28.2 ad if (error) 576 1.72.28.2 ad return (error); 577 1.72.28.2 ad } else 578 1.72.28.2 ad /* XXX add code for SCSI2 scanner, if any */ 579 1.72.28.2 ad return (EOPNOTSUPP); 580 1.72.28.2 ad ss->flags &= ~SSF_TRIGGERED; 581 1.72.28.2 ad break; 582 1.72.28.2 ad #ifdef NOTYET 583 1.72.28.2 ad case SCAN_USE_ADF: 584 1.72.28.2 ad break; 585 1.72.28.2 ad #endif 586 1.72.28.2 ad default: 587 1.72.28.2 ad return (scsipi_do_ioctl(ss->sc_periph, dev, cmd, addr, 588 1.72.28.2 ad flag, l)); 589 1.72.28.2 ad } 590 1.72.28.2 ad return (error); 591 1.72.28.2 ad } 592
Indexes created Mon Sep 29 21:09:56 GMT 2025