mscp_tape.c revision 1.27.2.2
1 1.27.2.2 elad /* $NetBSD: mscp_tape.c,v 1.27.2.2 2006/04/19 03:25:24 elad Exp $ */ 2 1.27.2.2 elad /* 3 1.27.2.2 elad * Copyright (c) 1996 Ludd, University of Lule}, Sweden. 4 1.27.2.2 elad * All rights reserved. 5 1.27.2.2 elad * 6 1.27.2.2 elad * Redistribution and use in source and binary forms, with or without 7 1.27.2.2 elad * modification, are permitted provided that the following conditions 8 1.27.2.2 elad * are met: 9 1.27.2.2 elad * 1. Redistributions of source code must retain the above copyright 10 1.27.2.2 elad * notice, this list of conditions and the following disclaimer. 11 1.27.2.2 elad * 2. Redistributions in binary form must reproduce the above copyright 12 1.27.2.2 elad * notice, this list of conditions and the following disclaimer in the 13 1.27.2.2 elad * documentation and/or other materials provided with the distribution. 14 1.27.2.2 elad * 3. All advertising materials mentioning features or use of this software 15 1.27.2.2 elad * must display the following acknowledgement: 16 1.27.2.2 elad * This product includes software developed at Ludd, University of 17 1.27.2.2 elad * Lule}, Sweden and its contributors. 18 1.27.2.2 elad * 4. The name of the author may not be used to endorse or promote products 19 1.27.2.2 elad * derived from this software without specific prior written permission 20 1.27.2.2 elad * 21 1.27.2.2 elad * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 1.27.2.2 elad * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 1.27.2.2 elad * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 1.27.2.2 elad * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 1.27.2.2 elad * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 1.27.2.2 elad * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 1.27.2.2 elad * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 1.27.2.2 elad * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 1.27.2.2 elad * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 1.27.2.2 elad * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 1.27.2.2 elad */ 32 1.27.2.2 elad 33 1.27.2.2 elad 34 1.27.2.2 elad /* 35 1.27.2.2 elad * MSCP tape device driver 36 1.27.2.2 elad */ 37 1.27.2.2 elad 38 1.27.2.2 elad /* 39 1.27.2.2 elad * TODO 40 1.27.2.2 elad * Write status handling code. 41 1.27.2.2 elad */ 42 1.27.2.2 elad 43 1.27.2.2 elad #include <sys/cdefs.h> 44 1.27.2.2 elad __KERNEL_RCSID(0, "$NetBSD: mscp_tape.c,v 1.27.2.2 2006/04/19 03:25:24 elad Exp $"); 45 1.27.2.2 elad 46 1.27.2.2 elad #include <sys/param.h> 47 1.27.2.2 elad #include <sys/device.h> 48 1.27.2.2 elad #include <sys/kernel.h> 49 1.27.2.2 elad #include <sys/buf.h> 50 1.27.2.2 elad #include <sys/bufq.h> 51 1.27.2.2 elad #include <sys/ioccom.h> 52 1.27.2.2 elad #include <sys/mtio.h> 53 1.27.2.2 elad #include <sys/fcntl.h> 54 1.27.2.2 elad #include <sys/malloc.h> 55 1.27.2.2 elad #include <sys/systm.h> 56 1.27.2.2 elad #include <sys/proc.h> 57 1.27.2.2 elad #include <sys/conf.h> 58 1.27.2.2 elad 59 1.27.2.2 elad #include <machine/bus.h> 60 1.27.2.2 elad #include <machine/cpu.h> 61 1.27.2.2 elad 62 1.27.2.2 elad #include <dev/mscp/mscp.h> 63 1.27.2.2 elad #include <dev/mscp/mscpreg.h> 64 1.27.2.2 elad #include <dev/mscp/mscpvar.h> 65 1.27.2.2 elad 66 1.27.2.2 elad #include "locators.h" 67 1.27.2.2 elad 68 1.27.2.2 elad /* 69 1.27.2.2 elad * Drive status, per drive 70 1.27.2.2 elad */ 71 1.27.2.2 elad struct mt_softc { 72 1.27.2.2 elad struct device mt_dev; /* Autoconf struct */ 73 1.27.2.2 elad int mt_state; /* open/closed state */ 74 1.27.2.2 elad int mt_hwunit; /* Hardware unit number */ 75 1.27.2.2 elad int mt_inuse; /* Locks the tape drive for others */ 76 1.27.2.2 elad int mt_waswrite; /* Last operation was a write op */ 77 1.27.2.2 elad int mt_serex; /* Got serious exception */ 78 1.27.2.2 elad int mt_ioctlerr; /* Error after last ioctl */ 79 1.27.2.2 elad }; 80 1.27.2.2 elad 81 1.27.2.2 elad #define MT_OFFLINE 0 82 1.27.2.2 elad #define MT_ONLINE 1 83 1.27.2.2 elad 84 1.27.2.2 elad int mtmatch(struct device *, struct cfdata *, void *); 85 1.27.2.2 elad void mtattach(struct device *, struct device *, void *); 86 1.27.2.2 elad void mtdgram(struct device *, struct mscp *, struct mscp_softc *); 87 1.27.2.2 elad void mtiodone(struct device *, struct buf *); 88 1.27.2.2 elad int mtonline(struct device *, struct mscp *); 89 1.27.2.2 elad int mtgotstatus(struct device *, struct mscp *); 90 1.27.2.2 elad int mtioerror(struct device *, struct mscp *, struct buf *); 91 1.27.2.2 elad void mtfillin(struct buf *, struct mscp *); 92 1.27.2.2 elad int mtcmd(struct mt_softc *, int, int, int); 93 1.27.2.2 elad void mtcmddone(struct device *, struct mscp *); 94 1.27.2.2 elad int mt_putonline(struct mt_softc *); 95 1.27.2.2 elad 96 1.27.2.2 elad struct mscp_device mt_device = { 97 1.27.2.2 elad mtdgram, 98 1.27.2.2 elad mtiodone, 99 1.27.2.2 elad mtonline, 100 1.27.2.2 elad mtgotstatus, 101 1.27.2.2 elad 0, 102 1.27.2.2 elad mtioerror, 103 1.27.2.2 elad 0, 104 1.27.2.2 elad mtfillin, 105 1.27.2.2 elad mtcmddone, 106 1.27.2.2 elad }; 107 1.27.2.2 elad 108 1.27.2.2 elad /* This is not good, should allow more than 4 tapes/device type */ 109 1.27.2.2 elad #define mtunit(dev) (minor(dev) & T_UNIT) 110 1.27.2.2 elad #define mtnorewind(dev) (dev & T_NOREWIND) 111 1.27.2.2 elad #define mthdensity(dev) (dev & T_1600BPI) 112 1.27.2.2 elad 113 1.27.2.2 elad CFATTACH_DECL(mt, sizeof(struct mt_softc), 114 1.27.2.2 elad mtmatch, mtattach, NULL, NULL); 115 1.27.2.2 elad 116 1.27.2.2 elad extern struct cfdriver mt_cd; 117 1.27.2.2 elad 118 1.27.2.2 elad dev_type_open(mtopen); 119 1.27.2.2 elad dev_type_close(mtclose); 120 1.27.2.2 elad dev_type_read(mtread); 121 1.27.2.2 elad dev_type_write(mtwrite); 122 1.27.2.2 elad dev_type_ioctl(mtioctl); 123 1.27.2.2 elad dev_type_strategy(mtstrategy); 124 1.27.2.2 elad dev_type_dump(mtdump); 125 1.27.2.2 elad 126 1.27.2.2 elad const struct bdevsw mt_bdevsw = { 127 1.27.2.2 elad mtopen, mtclose, mtstrategy, mtioctl, mtdump, nosize, D_TAPE 128 1.27.2.2 elad }; 129 1.27.2.2 elad 130 1.27.2.2 elad const struct cdevsw mt_cdevsw = { 131 1.27.2.2 elad mtopen, mtclose, mtread, mtwrite, mtioctl, 132 1.27.2.2 elad nostop, notty, nopoll, nommap, nokqfilter, D_TAPE 133 1.27.2.2 elad }; 134 1.27.2.2 elad 135 1.27.2.2 elad /* 136 1.27.2.2 elad * More driver definitions, for generic MSCP code. 137 1.27.2.2 elad */ 138 1.27.2.2 elad 139 1.27.2.2 elad int 140 1.27.2.2 elad mtmatch(parent, cf, aux) 141 1.27.2.2 elad struct device *parent; 142 1.27.2.2 elad struct cfdata *cf; 143 1.27.2.2 elad void *aux; 144 1.27.2.2 elad { 145 1.27.2.2 elad struct drive_attach_args *da = aux; 146 1.27.2.2 elad struct mscp *mp = da->da_mp; 147 1.27.2.2 elad 148 1.27.2.2 elad if ((da->da_typ & MSCPBUS_TAPE) == 0) 149 1.27.2.2 elad return 0; 150 1.27.2.2 elad if (cf->cf_loc[MSCPBUSCF_DRIVE] != MSCPBUSCF_DRIVE_DEFAULT && 151 1.27.2.2 elad cf->cf_loc[MSCPBUSCF_DRIVE] != mp->mscp_unit) 152 1.27.2.2 elad return 0; 153 1.27.2.2 elad return 1; 154 1.27.2.2 elad } 155 1.27.2.2 elad 156 1.27.2.2 elad /* 157 1.27.2.2 elad * The attach routine only checks and prints drive type. 158 1.27.2.2 elad */ 159 1.27.2.2 elad void 160 1.27.2.2 elad mtattach(parent, self, aux) 161 1.27.2.2 elad struct device *parent, *self; 162 1.27.2.2 elad void *aux; 163 1.27.2.2 elad { 164 1.27.2.2 elad struct mt_softc *mt = device_private(self); 165 1.27.2.2 elad struct drive_attach_args *da = aux; 166 1.27.2.2 elad struct mscp *mp = da->da_mp; 167 1.27.2.2 elad struct mscp_softc *mi = (void *)parent; 168 1.27.2.2 elad 169 1.27.2.2 elad mt->mt_hwunit = mp->mscp_unit; 170 1.27.2.2 elad mi->mi_dp[mp->mscp_unit] = self; 171 1.27.2.2 elad 172 1.27.2.2 elad disk_printtype(mp->mscp_unit, mp->mscp_guse.guse_mediaid); 173 1.27.2.2 elad } 174 1.27.2.2 elad 175 1.27.2.2 elad /* 176 1.27.2.2 elad * (Try to) put the drive online. This is done the first time the 177 1.27.2.2 elad * drive is opened, or if it has fallen offline. 178 1.27.2.2 elad */ 179 1.27.2.2 elad int 180 1.27.2.2 elad mt_putonline(mt) 181 1.27.2.2 elad struct mt_softc *mt; 182 1.27.2.2 elad { 183 1.27.2.2 elad struct mscp *mp; 184 1.27.2.2 elad struct mscp_softc *mi = 185 1.27.2.2 elad (struct mscp_softc *)device_parent(&mt->mt_dev); 186 1.27.2.2 elad volatile int i; 187 1.27.2.2 elad 188 1.27.2.2 elad ((volatile struct mt_softc *) mt)->mt_state = MT_OFFLINE; 189 1.27.2.2 elad mp = mscp_getcp(mi, MSCP_WAIT); 190 1.27.2.2 elad mp->mscp_opcode = M_OP_ONLINE; 191 1.27.2.2 elad mp->mscp_unit = mt->mt_hwunit; 192 1.27.2.2 elad mp->mscp_cmdref = (long)&mt->mt_state; 193 1.27.2.2 elad *mp->mscp_addr |= MSCP_OWN | MSCP_INT; 194 1.27.2.2 elad 195 1.27.2.2 elad /* Poll away */ 196 1.27.2.2 elad i = bus_space_read_2(mi->mi_iot, mi->mi_iph, 0); 197 1.27.2.2 elad if (tsleep(&mt->mt_state, PRIBIO, "mtonline", 240 * hz)) 198 1.27.2.2 elad return MSCP_FAILED; 199 1.27.2.2 elad 200 1.27.2.2 elad if ((volatile int)mt->mt_state != MT_ONLINE) 201 1.27.2.2 elad return MSCP_FAILED; 202 1.27.2.2 elad 203 1.27.2.2 elad return MSCP_DONE; 204 1.27.2.2 elad } 205 1.27.2.2 elad /* 206 1.27.2.2 elad * Open a drive. 207 1.27.2.2 elad */ 208 1.27.2.2 elad /*ARGSUSED*/ 209 1.27.2.2 elad int 210 1.27.2.2 elad mtopen(dev, flag, fmt, l) 211 1.27.2.2 elad dev_t dev; 212 1.27.2.2 elad int flag, fmt; 213 1.27.2.2 elad struct lwp *l; 214 1.27.2.2 elad { 215 1.27.2.2 elad struct mt_softc *mt; 216 1.27.2.2 elad int unit; 217 1.27.2.2 elad 218 1.27.2.2 elad /* 219 1.27.2.2 elad * Make sure this is a reasonable open request. 220 1.27.2.2 elad */ 221 1.27.2.2 elad unit = mtunit(dev); 222 1.27.2.2 elad if (unit >= mt_cd.cd_ndevs) 223 1.27.2.2 elad return ENXIO; 224 1.27.2.2 elad mt = mt_cd.cd_devs[unit]; 225 1.27.2.2 elad if (mt == 0) 226 1.27.2.2 elad return ENXIO; 227 1.27.2.2 elad 228 1.27.2.2 elad if (mt->mt_inuse) 229 1.27.2.2 elad return EBUSY; 230 1.27.2.2 elad mt->mt_inuse = 1; 231 1.27.2.2 elad 232 1.27.2.2 elad if (mt_putonline(mt) == MSCP_FAILED) { 233 1.27.2.2 elad mt->mt_inuse = 0; 234 1.27.2.2 elad return EIO; 235 1.27.2.2 elad } 236 1.27.2.2 elad 237 1.27.2.2 elad return 0; 238 1.27.2.2 elad } 239 1.27.2.2 elad 240 1.27.2.2 elad /* ARGSUSED */ 241 1.27.2.2 elad int 242 1.27.2.2 elad mtclose(dev, flags, fmt, l) 243 1.27.2.2 elad dev_t dev; 244 1.27.2.2 elad int flags, fmt; 245 1.27.2.2 elad struct lwp *l; 246 1.27.2.2 elad { 247 1.27.2.2 elad int unit = mtunit(dev); 248 1.27.2.2 elad struct mt_softc *mt = mt_cd.cd_devs[unit]; 249 1.27.2.2 elad 250 1.27.2.2 elad /* 251 1.27.2.2 elad * If we just have finished a writing, write EOT marks. 252 1.27.2.2 elad */ 253 1.27.2.2 elad if ((flags & FWRITE) && mt->mt_waswrite) { 254 1.27.2.2 elad mtcmd(mt, MTWEOF, 0, 0); 255 1.27.2.2 elad mtcmd(mt, MTWEOF, 0, 0); 256 1.27.2.2 elad mtcmd(mt, MTBSR, 1, 0); 257 1.27.2.2 elad } 258 1.27.2.2 elad if (mtnorewind(dev) == 0) 259 1.27.2.2 elad mtcmd(mt, MTREW, 0, 1); 260 1.27.2.2 elad if (mt->mt_serex) 261 1.27.2.2 elad mtcmd(mt, -1, 0, 0); 262 1.27.2.2 elad 263 1.27.2.2 elad mt->mt_inuse = 0; /* Release the tape */ 264 1.27.2.2 elad return 0; 265 1.27.2.2 elad } 266 1.27.2.2 elad 267 1.27.2.2 elad void 268 1.27.2.2 elad mtstrategy(bp) 269 1.27.2.2 elad struct buf *bp; 270 1.27.2.2 elad { 271 1.27.2.2 elad int unit; 272 1.27.2.2 elad struct mt_softc *mt; 273 1.27.2.2 elad 274 1.27.2.2 elad /* 275 1.27.2.2 elad * Make sure this is a reasonable drive to use. 276 1.27.2.2 elad */ 277 1.27.2.2 elad unit = mtunit(bp->b_dev); 278 1.27.2.2 elad if (unit > mt_cd.cd_ndevs || (mt = mt_cd.cd_devs[unit]) == NULL) { 279 1.27.2.2 elad bp->b_error = ENXIO; 280 1.27.2.2 elad goto bad; 281 1.27.2.2 elad } 282 1.27.2.2 elad 283 1.27.2.2 elad mt->mt_waswrite = bp->b_flags & B_READ ? 0 : 1; 284 1.27.2.2 elad mscp_strategy(bp, device_parent(&mt->mt_dev)); 285 1.27.2.2 elad return; 286 1.27.2.2 elad 287 1.27.2.2 elad bad: 288 1.27.2.2 elad bp->b_flags |= B_ERROR; 289 1.27.2.2 elad biodone(bp); 290 1.27.2.2 elad } 291 1.27.2.2 elad 292 1.27.2.2 elad int 293 1.27.2.2 elad mtread(dev, uio, flag) 294 1.27.2.2 elad dev_t dev; 295 1.27.2.2 elad struct uio *uio; 296 1.27.2.2 elad int flag; 297 1.27.2.2 elad { 298 1.27.2.2 elad 299 1.27.2.2 elad return (physio(mtstrategy, NULL, dev, B_READ, minphys, uio)); 300 1.27.2.2 elad } 301 1.27.2.2 elad 302 1.27.2.2 elad int 303 1.27.2.2 elad mtwrite(dev, uio, flag) 304 1.27.2.2 elad dev_t dev; 305 1.27.2.2 elad struct uio *uio; 306 1.27.2.2 elad int flag; 307 1.27.2.2 elad { 308 1.27.2.2 elad 309 1.27.2.2 elad return (physio(mtstrategy, NULL, dev, B_WRITE, minphys, uio)); 310 1.27.2.2 elad } 311 1.27.2.2 elad 312 1.27.2.2 elad void 313 1.27.2.2 elad mtiodone(usc, bp) 314 1.27.2.2 elad struct device *usc; 315 1.27.2.2 elad struct buf *bp; 316 1.27.2.2 elad { 317 1.27.2.2 elad 318 1.27.2.2 elad biodone(bp); 319 1.27.2.2 elad } 320 1.27.2.2 elad 321 1.27.2.2 elad /* 322 1.27.2.2 elad * Fill in drive addresses in a mscp packet waiting for transfer. 323 1.27.2.2 elad */ 324 1.27.2.2 elad void 325 1.27.2.2 elad mtfillin(bp, mp) 326 1.27.2.2 elad struct buf *bp; 327 1.27.2.2 elad struct mscp *mp; 328 1.27.2.2 elad { 329 1.27.2.2 elad int unit = mtunit(bp->b_dev); 330 1.27.2.2 elad struct mt_softc *mt = mt_cd.cd_devs[unit]; 331 1.27.2.2 elad 332 1.27.2.2 elad mp->mscp_unit = mt->mt_hwunit; 333 1.27.2.2 elad if (mt->mt_serex == 2) { 334 1.27.2.2 elad mp->mscp_modifier = M_MD_CLSEX; 335 1.27.2.2 elad mt->mt_serex = 0; 336 1.27.2.2 elad } else 337 1.27.2.2 elad mp->mscp_modifier = 0; 338 1.27.2.2 elad 339 1.27.2.2 elad mp->mscp_seq.seq_bytecount = bp->b_bcount; 340 1.27.2.2 elad } 341 1.27.2.2 elad 342 1.27.2.2 elad /* 343 1.27.2.2 elad * Handle an error datagram. 344 1.27.2.2 elad */ 345 1.27.2.2 elad void 346 1.27.2.2 elad mtdgram(usc, mp, mi) 347 1.27.2.2 elad struct device *usc; 348 1.27.2.2 elad struct mscp *mp; 349 1.27.2.2 elad struct mscp_softc *mi; 350 1.27.2.2 elad { 351 1.27.2.2 elad if (mscp_decodeerror(usc == NULL?"unconf mt" : usc->dv_xname, mp, mi)) 352 1.27.2.2 elad return; 353 1.27.2.2 elad } 354 1.27.2.2 elad 355 1.27.2.2 elad /* 356 1.27.2.2 elad * A drive came on line, make sure it really _is_ on line before 357 1.27.2.2 elad * trying to use it. 358 1.27.2.2 elad */ 359 1.27.2.2 elad int 360 1.27.2.2 elad mtonline(usc, mp) 361 1.27.2.2 elad struct device *usc; 362 1.27.2.2 elad struct mscp *mp; 363 1.27.2.2 elad { 364 1.27.2.2 elad struct mt_softc *mt = (void *)usc; 365 1.27.2.2 elad 366 1.27.2.2 elad wakeup((caddr_t)&mt->mt_state); 367 1.27.2.2 elad if ((mp->mscp_status & M_ST_MASK) == M_ST_SUCCESS) 368 1.27.2.2 elad mt->mt_state = MT_ONLINE; 369 1.27.2.2 elad 370 1.27.2.2 elad return (MSCP_DONE); 371 1.27.2.2 elad } 372 1.27.2.2 elad 373 1.27.2.2 elad /* 374 1.27.2.2 elad * We got some (configured) unit's status. Return DONE. 375 1.27.2.2 elad */ 376 1.27.2.2 elad int 377 1.27.2.2 elad mtgotstatus(usc, mp) 378 1.27.2.2 elad struct device *usc; 379 1.27.2.2 elad struct mscp *mp; 380 1.27.2.2 elad { 381 1.27.2.2 elad return (MSCP_DONE); 382 1.27.2.2 elad } 383 1.27.2.2 elad 384 1.27.2.2 elad static const char *mt_ioerrs[] = { 385 1.27.2.2 elad "invalid command", /* 1 M_ST_INVALCMD */ 386 1.27.2.2 elad "command aborted", /* 2 M_ST_ABORTED */ 387 1.27.2.2 elad "unit offline", /* 3 M_ST_OFFLINE */ 388 1.27.2.2 elad "unknown", /* 4 M_ST_AVAILABLE */ 389 1.27.2.2 elad "unknown", /* 5 M_ST_MFMTERR */ 390 1.27.2.2 elad "unit write protected", /* 6 M_ST_WRPROT */ 391 1.27.2.2 elad "compare error", /* 7 M_ST_COMPERR */ 392 1.27.2.2 elad "data error", /* 8 M_ST_DATAERR */ 393 1.27.2.2 elad "host buffer access error", /* 9 M_ST_HOSTBUFERR */ 394 1.27.2.2 elad "controller error", /* 10 M_ST_CTLRERR */ 395 1.27.2.2 elad "drive error", /* 11 M_ST_DRIVEERR */ 396 1.27.2.2 elad "formatter error", /* 12 M_ST_FORMATTERR */ 397 1.27.2.2 elad "BOT encountered", /* 13 M_ST_BOT */ 398 1.27.2.2 elad "tape mark encountered",/* 14 M_ST_TAPEMARK */ 399 1.27.2.2 elad "unknown", /* 15 */ 400 1.27.2.2 elad "record data truncated",/* 16 M_ST_RDTRUNC */ 401 1.27.2.2 elad }; 402 1.27.2.2 elad 403 1.27.2.2 elad /* 404 1.27.2.2 elad * An I/O error, may be because of a tapemark encountered. 405 1.27.2.2 elad * Check that before failing. 406 1.27.2.2 elad */ 407 1.27.2.2 elad /*ARGSUSED*/ 408 1.27.2.2 elad int 409 1.27.2.2 elad mtioerror(usc, mp, bp) 410 1.27.2.2 elad struct device *usc; 411 1.27.2.2 elad struct mscp *mp; 412 1.27.2.2 elad struct buf *bp; 413 1.27.2.2 elad { 414 1.27.2.2 elad struct mt_softc *mt = (void *)usc; 415 1.27.2.2 elad int st = mp->mscp_status & M_ST_MASK; 416 1.27.2.2 elad 417 1.27.2.2 elad if (mp->mscp_flags & M_EF_SEREX) 418 1.27.2.2 elad mt->mt_serex = 1; 419 1.27.2.2 elad if (st == M_ST_TAPEMARK) 420 1.27.2.2 elad mt->mt_serex = 2; 421 1.27.2.2 elad else { 422 1.27.2.2 elad if (st && st < 17) 423 1.27.2.2 elad printf("%s: error %d (%s)\n", mt->mt_dev.dv_xname, st, 424 1.27.2.2 elad mt_ioerrs[st-1]); 425 1.27.2.2 elad else 426 1.27.2.2 elad printf("%s: error %d\n", mt->mt_dev.dv_xname, st); 427 1.27.2.2 elad bp->b_flags |= B_ERROR; 428 1.27.2.2 elad bp->b_error = EROFS; 429 1.27.2.2 elad } 430 1.27.2.2 elad 431 1.27.2.2 elad return (MSCP_DONE); 432 1.27.2.2 elad } 433 1.27.2.2 elad 434 1.27.2.2 elad /* 435 1.27.2.2 elad * I/O controls. 436 1.27.2.2 elad */ 437 1.27.2.2 elad int 438 1.27.2.2 elad mtioctl(dev, cmd, data, flag, l) 439 1.27.2.2 elad dev_t dev; 440 1.27.2.2 elad u_long cmd; 441 1.27.2.2 elad caddr_t data; 442 1.27.2.2 elad int flag; 443 1.27.2.2 elad struct lwp *l; 444 1.27.2.2 elad { 445 1.27.2.2 elad int unit = mtunit(dev); 446 1.27.2.2 elad struct mt_softc *mt = mt_cd.cd_devs[unit]; 447 1.27.2.2 elad struct mtop *mtop; 448 1.27.2.2 elad int error = 0; 449 1.27.2.2 elad 450 1.27.2.2 elad switch (cmd) { 451 1.27.2.2 elad 452 1.27.2.2 elad case MTIOCTOP: 453 1.27.2.2 elad mtop = (void *)data; 454 1.27.2.2 elad if (mtop->mt_op == MTWEOF) { 455 1.27.2.2 elad while (mtop->mt_count-- > 0) 456 1.27.2.2 elad if ((error = mtcmd(mt, mtop->mt_op, 0, 0))) 457 1.27.2.2 elad break; 458 1.27.2.2 elad } else 459 1.27.2.2 elad error = mtcmd(mt, mtop->mt_op, mtop->mt_count, 0); 460 1.27.2.2 elad 461 1.27.2.2 elad case MTIOCGET: 462 1.27.2.2 elad ((struct mtget *)data)->mt_type = MT_ISTMSCP; 463 1.27.2.2 elad /* XXX we need to fill in more fields here */ 464 1.27.2.2 elad break; 465 1.27.2.2 elad 466 1.27.2.2 elad default: 467 1.27.2.2 elad error = ENXIO; 468 1.27.2.2 elad break; 469 1.27.2.2 elad } 470 1.27.2.2 elad return (error); 471 1.27.2.2 elad } 472 1.27.2.2 elad 473 1.27.2.2 elad /* 474 1.27.2.2 elad * No crash dump support... 475 1.27.2.2 elad */ 476 1.27.2.2 elad int 477 1.27.2.2 elad mtdump(dev, blkno, va, size) 478 1.27.2.2 elad dev_t dev; 479 1.27.2.2 elad daddr_t blkno; 480 1.27.2.2 elad caddr_t va; 481 1.27.2.2 elad size_t size; 482 1.27.2.2 elad { 483 1.27.2.2 elad return -1; 484 1.27.2.2 elad } 485 1.27.2.2 elad 486 1.27.2.2 elad /* 487 1.27.2.2 elad * Send a command to the tape drive. Wait until the command is 488 1.27.2.2 elad * finished before returning. 489 1.27.2.2 elad * This routine must only be called when there are no data transfer 490 1.27.2.2 elad * active on this device. Can we be sure of this? Or does the ctlr 491 1.27.2.2 elad * queue up all command packets and take them in sequential order? 492 1.27.2.2 elad * It sure would be nice if my manual stated this... /ragge 493 1.27.2.2 elad */ 494 1.27.2.2 elad int 495 1.27.2.2 elad mtcmd(mt, cmd, count, complete) 496 1.27.2.2 elad struct mt_softc *mt; 497 1.27.2.2 elad int cmd, count, complete; 498 1.27.2.2 elad { 499 1.27.2.2 elad struct mscp *mp; 500 1.27.2.2 elad struct mscp_softc *mi = (void *)device_parent(&mt->mt_dev); 501 1.27.2.2 elad volatile int i; 502 1.27.2.2 elad 503 1.27.2.2 elad mp = mscp_getcp(mi, MSCP_WAIT); 504 1.27.2.2 elad 505 1.27.2.2 elad mt->mt_ioctlerr = 0; 506 1.27.2.2 elad mp->mscp_unit = mt->mt_hwunit; 507 1.27.2.2 elad mp->mscp_cmdref = -1; 508 1.27.2.2 elad *mp->mscp_addr |= MSCP_OWN | MSCP_INT; 509 1.27.2.2 elad 510 1.27.2.2 elad switch (cmd) { 511 1.27.2.2 elad case MTWEOF: 512 1.27.2.2 elad mp->mscp_opcode = M_OP_WRITM; 513 1.27.2.2 elad break; 514 1.27.2.2 elad 515 1.27.2.2 elad case MTBSF: 516 1.27.2.2 elad mp->mscp_modifier = M_MD_REVERSE; 517 1.27.2.2 elad case MTFSF: 518 1.27.2.2 elad mp->mscp_opcode = M_OP_POS; 519 1.27.2.2 elad mp->mscp_seq.seq_buffer = count; 520 1.27.2.2 elad break; 521 1.27.2.2 elad 522 1.27.2.2 elad case MTBSR: 523 1.27.2.2 elad mp->mscp_modifier = M_MD_REVERSE; 524 1.27.2.2 elad case MTFSR: 525 1.27.2.2 elad mp->mscp_opcode = M_OP_POS; 526 1.27.2.2 elad mp->mscp_modifier |= M_MD_OBJCOUNT; 527 1.27.2.2 elad mp->mscp_seq.seq_bytecount = count; 528 1.27.2.2 elad break; 529 1.27.2.2 elad 530 1.27.2.2 elad case MTREW: 531 1.27.2.2 elad mp->mscp_opcode = M_OP_POS; 532 1.27.2.2 elad mp->mscp_modifier = M_MD_REWIND | M_MD_CLSEX; 533 1.27.2.2 elad if (complete) 534 1.27.2.2 elad mp->mscp_modifier |= M_MD_IMMEDIATE; 535 1.27.2.2 elad mt->mt_serex = 0; 536 1.27.2.2 elad break; 537 1.27.2.2 elad 538 1.27.2.2 elad case MTOFFL: 539 1.27.2.2 elad mp->mscp_opcode = M_OP_AVAILABLE; 540 1.27.2.2 elad mp->mscp_modifier = M_MD_UNLOAD | M_MD_CLSEX; 541 1.27.2.2 elad mt->mt_serex = 0; 542 1.27.2.2 elad break; 543 1.27.2.2 elad 544 1.27.2.2 elad case MTNOP: 545 1.27.2.2 elad mp->mscp_opcode = M_OP_GETUNITST; 546 1.27.2.2 elad break; 547 1.27.2.2 elad 548 1.27.2.2 elad case -1: /* Clear serious exception only */ 549 1.27.2.2 elad mp->mscp_opcode = M_OP_POS; 550 1.27.2.2 elad mp->mscp_modifier = M_MD_CLSEX; 551 1.27.2.2 elad mt->mt_serex = 0; 552 1.27.2.2 elad break; 553 1.27.2.2 elad 554 1.27.2.2 elad default: 555 1.27.2.2 elad printf("Bad ioctl %x\n", cmd); 556 1.27.2.2 elad mp->mscp_opcode = M_OP_POS; 557 1.27.2.2 elad break; 558 1.27.2.2 elad } 559 1.27.2.2 elad 560 1.27.2.2 elad i = bus_space_read_2(mi->mi_iot, mi->mi_iph, 0); 561 1.27.2.2 elad tsleep(&mt->mt_inuse, PRIBIO, "mtioctl", 0); 562 1.27.2.2 elad return mt->mt_ioctlerr; 563 1.27.2.2 elad } 564 1.27.2.2 elad 565 1.27.2.2 elad /* 566 1.27.2.2 elad * Called from bus routines whenever a non-data transfer is finished. 567 1.27.2.2 elad */ 568 1.27.2.2 elad void 569 1.27.2.2 elad mtcmddone(usc, mp) 570 1.27.2.2 elad struct device *usc; 571 1.27.2.2 elad struct mscp *mp; 572 1.27.2.2 elad { 573 1.27.2.2 elad struct mt_softc *mt = (void *)usc; 574 1.27.2.2 elad 575 1.27.2.2 elad if (mp->mscp_status) { 576 1.27.2.2 elad mt->mt_ioctlerr = EIO; 577 1.27.2.2 elad printf("%s: bad status %x\n", mt->mt_dev.dv_xname, 578 1.27.2.2 elad mp->mscp_status); 579 1.27.2.2 elad } 580 1.27.2.2 elad wakeup(&mt->mt_inuse); 581 1.27.2.2 elad } 582
Indexes created Thu Oct 02 14:10:14 GMT 2025