Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/i2o/iopsp.c
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1 /* $NetBSD: iopsp.c,v 1.41 2022/05/04 07:48:34 andvar Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Raw SCSI device support for I2O. IOPs present SCSI devices individually; 34 * we group them by controlling port. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: iopsp.c,v 1.41 2022/05/04 07:48:34 andvar Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/device.h> 44 #include <sys/queue.h> 45 #include <sys/proc.h> 46 #include <sys/buf.h> 47 #include <sys/endian.h> 48 #include <sys/malloc.h> 49 #include <sys/scsiio.h> 50 51 #include <sys/bswap.h> 52 #include <sys/bus.h> 53 54 #include <dev/scsipi/scsi_all.h> 55 #include <dev/scsipi/scsi_disk.h> 56 #include <dev/scsipi/scsipi_all.h> 57 #include <dev/scsipi/scsiconf.h> 58 #include <dev/scsipi/scsi_message.h> 59 60 #include <dev/i2o/i2o.h> 61 #include <dev/i2o/iopio.h> 62 #include <dev/i2o/iopvar.h> 63 #include <dev/i2o/iopspvar.h> 64 65 static void iopsp_adjqparam(device_t, int); 66 static void iopsp_attach(device_t, device_t, void *); 67 static void iopsp_intr(device_t, struct iop_msg *, void *); 68 static int iopsp_ioctl(struct scsipi_channel *, u_long, 69 void *, int, struct proc *); 70 static int iopsp_match(device_t, cfdata_t, void *); 71 static int iopsp_rescan(struct iopsp_softc *); 72 static int iopsp_reconfig(device_t); 73 static void iopsp_scsipi_request(struct scsipi_channel *, 74 scsipi_adapter_req_t, void *); 75 76 CFATTACH_DECL_NEW(iopsp, sizeof(struct iopsp_softc), 77 iopsp_match, iopsp_attach, NULL, NULL); 78 79 /* 80 * Match a supported device. 81 */ 82 static int 83 iopsp_match(device_t parent, cfdata_t match, void *aux) 84 { 85 struct iop_attach_args *ia; 86 struct iop_softc *iop; 87 struct { 88 struct i2o_param_op_results pr; 89 struct i2o_param_read_results prr; 90 struct i2o_param_hba_ctlr_info ci; 91 } __packed param; 92 93 ia = aux; 94 iop = device_private(parent); 95 96 if (ia->ia_class != I2O_CLASS_BUS_ADAPTER_PORT) 97 return (0); 98 99 if (iop_field_get_all(iop, ia->ia_tid, I2O_PARAM_HBA_CTLR_INFO, ¶m, 100 sizeof(param), NULL) != 0) 101 return (0); 102 103 return (param.ci.bustype == I2O_HBA_BUS_SCSI || 104 param.ci.bustype == I2O_HBA_BUS_FCA); 105 } 106 107 /* 108 * Attach a supported device. 109 */ 110 static void 111 iopsp_attach(device_t parent, device_t self, void *aux) 112 { 113 struct iop_attach_args *ia; 114 struct iopsp_softc *sc; 115 struct iop_softc *iop; 116 struct { 117 struct i2o_param_op_results pr; 118 struct i2o_param_read_results prr; 119 union { 120 struct i2o_param_hba_ctlr_info ci; 121 struct i2o_param_hba_scsi_ctlr_info sci; 122 struct i2o_param_hba_scsi_port_info spi; 123 } p; 124 } __packed param; 125 int fc, rv; 126 int size; 127 128 ia = (struct iop_attach_args *)aux; 129 sc = device_private(self); 130 iop = device_private(parent); 131 132 /* Register us as an initiator. */ 133 sc->sc_ii.ii_dv = self; 134 sc->sc_ii.ii_intr = iopsp_intr; 135 sc->sc_ii.ii_flags = 0; 136 sc->sc_ii.ii_tid = ia->ia_tid; 137 sc->sc_ii.ii_reconfig = iopsp_reconfig; 138 sc->sc_ii.ii_adjqparam = iopsp_adjqparam; 139 iop_initiator_register(iop, &sc->sc_ii); 140 141 rv = iop_field_get_all(iop, ia->ia_tid, I2O_PARAM_HBA_CTLR_INFO, 142 ¶m, sizeof(param), NULL); 143 if (rv != 0) 144 goto bad; 145 146 fc = (param.p.ci.bustype == I2O_HBA_BUS_FCA); 147 148 /* 149 * Say what the device is. If we can find out what the controlling 150 * device is, say what that is too. 151 */ 152 aprint_normal(": SCSI port"); 153 iop_print_ident(iop, ia->ia_tid); 154 aprint_normal("\n"); 155 156 rv = iop_field_get_all(iop, ia->ia_tid, I2O_PARAM_HBA_SCSI_CTLR_INFO, 157 ¶m, sizeof(param), NULL); 158 if (rv != 0) 159 goto bad; 160 161 aprint_normal_dev(sc->sc_dev, ""); 162 if (fc) 163 aprint_normal("FC"); 164 else 165 aprint_normal("%d-bit", param.p.sci.maxdatawidth); 166 aprint_normal(", max sync rate %dMHz, initiator ID %d\n", 167 (u_int32_t)le64toh(param.p.sci.maxsyncrate) / 1000, 168 le32toh(param.p.sci.initiatorid)); 169 170 sc->sc_openings = 1; 171 172 sc->sc_adapter.adapt_dev = sc->sc_dev; 173 sc->sc_adapter.adapt_nchannels = 1; 174 sc->sc_adapter.adapt_openings = 1; 175 sc->sc_adapter.adapt_max_periph = 1; 176 sc->sc_adapter.adapt_ioctl = iopsp_ioctl; 177 sc->sc_adapter.adapt_minphys = minphys; 178 sc->sc_adapter.adapt_request = iopsp_scsipi_request; 179 180 memset(&sc->sc_channel, 0, sizeof(sc->sc_channel)); 181 sc->sc_channel.chan_adapter = &sc->sc_adapter; 182 sc->sc_channel.chan_bustype = &scsi_bustype; 183 sc->sc_channel.chan_channel = 0; 184 sc->sc_channel.chan_ntargets = fc ? 185 IOPSP_MAX_FC_TARGET : param.p.sci.maxdatawidth; 186 sc->sc_channel.chan_nluns = IOPSP_MAX_LUN; 187 sc->sc_channel.chan_id = le32toh(param.p.sci.initiatorid); 188 sc->sc_channel.chan_flags = SCSIPI_CHAN_NOSETTLE; 189 190 /* 191 * Allocate the target map. Currently used for informational 192 * purposes only. 193 */ 194 size = sc->sc_channel.chan_ntargets * sizeof(struct iopsp_target); 195 sc->sc_targetmap = malloc(size, M_DEVBUF, M_WAITOK|M_ZERO); 196 197 /* Build the two maps, and attach to scsipi. */ 198 if (iopsp_reconfig(self) != 0) { 199 aprint_error_dev(sc->sc_dev, "configure failed\n"); 200 goto bad; 201 } 202 config_found(self, &sc->sc_channel, scsiprint, CFARGS_NONE); 203 return; 204 205 bad: 206 iop_initiator_unregister(iop, &sc->sc_ii); 207 } 208 209 /* 210 * Scan the LCT to determine which devices we control, and enter them into 211 * the maps. 212 */ 213 static int 214 iopsp_reconfig(device_t dv) 215 { 216 struct iopsp_softc *sc; 217 struct iop_softc *iop; 218 struct i2o_lct_entry *le; 219 struct scsipi_channel *sc_chan; 220 struct { 221 struct i2o_param_op_results pr; 222 struct i2o_param_read_results prr; 223 struct i2o_param_scsi_device_info sdi; 224 } __packed param; 225 u_int tid, nent, i, targ, lun, size, rv, bptid; 226 u_short *tidmap; 227 void *tofree; 228 struct iopsp_target *it; 229 int syncrate; 230 231 sc = device_private(dv); 232 iop = device_private(device_parent(sc->sc_dev)); 233 sc_chan = &sc->sc_channel; 234 235 KASSERT(mutex_owned(&iop->sc_conflock)); 236 237 /* Anything to do? */ 238 if (iop->sc_chgind == sc->sc_chgind) 239 return (0); 240 241 /* 242 * Allocate memory for the target/LUN -> TID map. Use zero to 243 * denote absent targets (zero is the TID of the I2O executive, 244 * and we never address that here). 245 */ 246 size = sc_chan->chan_ntargets * (IOPSP_MAX_LUN) * sizeof(u_short); 247 if ((tidmap = malloc(size, M_DEVBUF, M_WAITOK|M_ZERO)) == NULL) 248 return (ENOMEM); 249 250 for (i = 0; i < sc_chan->chan_ntargets; i++) 251 sc->sc_targetmap[i].it_flags &= ~IT_PRESENT; 252 253 /* 254 * A quick hack to handle Intel's stacked bus port arrangement. 255 */ 256 bptid = sc->sc_ii.ii_tid; 257 nent = iop->sc_nlctent; 258 for (le = iop->sc_lct->entry; nent != 0; nent--, le++) 259 if ((le16toh(le->classid) & 4095) == 260 I2O_CLASS_BUS_ADAPTER_PORT && 261 (le32toh(le->usertid) & 4095) == bptid) { 262 bptid = le16toh(le->localtid) & 4095; 263 break; 264 } 265 266 nent = iop->sc_nlctent; 267 for (i = 0, le = iop->sc_lct->entry; i < nent; i++, le++) { 268 if ((le16toh(le->classid) & 4095) != I2O_CLASS_SCSI_PERIPHERAL) 269 continue; 270 if (((le32toh(le->usertid) >> 12) & 4095) != bptid) 271 continue; 272 tid = le16toh(le->localtid) & 4095; 273 274 rv = iop_field_get_all(iop, tid, I2O_PARAM_SCSI_DEVICE_INFO, 275 ¶m, sizeof(param), NULL); 276 if (rv != 0) 277 continue; 278 targ = le32toh(param.sdi.identifier); 279 lun = param.sdi.luninfo[1]; 280 #if defined(DIAGNOSTIC) || defined(I2ODEBUG) 281 if (targ >= sc_chan->chan_ntargets || 282 lun >= sc_chan->chan_nluns) { 283 aprint_error_dev(sc->sc_dev, "target %d,%d (tid %d): " 284 "bad target/LUN\n", targ, lun, tid); 285 continue; 286 } 287 #endif 288 289 /* 290 * If we've already described this target, and nothing has 291 * changed, then don't describe it again. 292 */ 293 it = &sc->sc_targetmap[targ]; 294 it->it_flags |= IT_PRESENT; 295 syncrate = ((int)le64toh(param.sdi.negsyncrate) + 500) / 1000; 296 if (it->it_width != param.sdi.negdatawidth || 297 it->it_offset != param.sdi.negoffset || 298 it->it_syncrate != syncrate) { 299 it->it_width = param.sdi.negdatawidth; 300 it->it_offset = param.sdi.negoffset; 301 it->it_syncrate = syncrate; 302 303 aprint_verbose_dev(sc->sc_dev, "target %d (tid %d): %d-bit, ", 304 targ, tid, it->it_width); 305 if (it->it_syncrate == 0) 306 aprint_verbose("asynchronous\n"); 307 else 308 aprint_verbose("synchronous at %dMHz, " 309 "offset 0x%x\n", it->it_syncrate, 310 it->it_offset); 311 } 312 313 /* Ignore the device if it's in use by somebody else. */ 314 if ((le32toh(le->usertid) & 4095) != I2O_TID_NONE) { 315 if (sc->sc_tidmap == NULL || 316 IOPSP_TIDMAP(sc->sc_tidmap, targ, lun) != 317 IOPSP_TID_INUSE) { 318 aprint_verbose_dev(sc->sc_dev, "target %d,%d (tid %d): " 319 "in use by tid %d\n", 320 targ, lun, tid, 321 le32toh(le->usertid) & 4095); 322 } 323 IOPSP_TIDMAP(tidmap, targ, lun) = IOPSP_TID_INUSE; 324 } else 325 IOPSP_TIDMAP(tidmap, targ, lun) = (u_short)tid; 326 } 327 328 for (i = 0; i < sc_chan->chan_ntargets; i++) 329 if ((sc->sc_targetmap[i].it_flags & IT_PRESENT) == 0) 330 sc->sc_targetmap[i].it_width = 0; 331 332 /* Swap in the new map and return. */ 333 mutex_spin_enter(&iop->sc_intrlock); 334 tofree = sc->sc_tidmap; 335 sc->sc_tidmap = tidmap; 336 mutex_spin_exit(&iop->sc_intrlock); 337 338 if (tofree != NULL) 339 free(tofree, M_DEVBUF); 340 sc->sc_chgind = iop->sc_chgind; 341 return (0); 342 } 343 344 /* 345 * Re-scan the bus; to be called from a higher level (e.g. scsipi). 346 */ 347 static int 348 iopsp_rescan(struct iopsp_softc *sc) 349 { 350 struct iop_softc *iop; 351 struct iop_msg *im; 352 struct i2o_hba_bus_scan mf; 353 int rv; 354 355 iop = device_private(device_parent(sc->sc_dev)); 356 357 mutex_enter(&iop->sc_conflock); 358 im = iop_msg_alloc(iop, IM_WAIT); 359 360 mf.msgflags = I2O_MSGFLAGS(i2o_hba_bus_scan); 361 mf.msgfunc = I2O_MSGFUNC(sc->sc_ii.ii_tid, I2O_HBA_BUS_SCAN); 362 mf.msgictx = sc->sc_ii.ii_ictx; 363 mf.msgtctx = im->im_tctx; 364 365 rv = iop_msg_post(iop, im, &mf, 5*60*1000); 366 iop_msg_free(iop, im); 367 if (rv != 0) 368 aprint_error_dev(sc->sc_dev, "bus rescan failed (error %d)\n", 369 rv); 370 371 if ((rv = iop_lct_get(iop)) == 0) 372 rv = iopsp_reconfig(sc->sc_dev); 373 374 mutex_exit(&iop->sc_conflock); 375 return (rv); 376 } 377 378 /* 379 * Start a SCSI command. 380 */ 381 static void 382 iopsp_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 383 void *arg) 384 { 385 struct scsipi_xfer *xs; 386 struct scsipi_periph *periph; 387 struct iopsp_softc *sc; 388 struct iop_msg *im; 389 struct iop_softc *iop; 390 struct i2o_scsi_scb_exec *mf; 391 int error, flags, tid; 392 u_int32_t mb[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)]; 393 394 sc = device_private(chan->chan_adapter->adapt_dev); 395 iop = device_private(device_parent(sc->sc_dev)); 396 397 switch (req) { 398 case ADAPTER_REQ_RUN_XFER: 399 xs = arg; 400 periph = xs->xs_periph; 401 flags = xs->xs_control; 402 403 SC_DEBUG(periph, SCSIPI_DB2, ("iopsp_scsi_request run_xfer\n")); 404 405 tid = IOPSP_TIDMAP(sc->sc_tidmap, periph->periph_target, 406 periph->periph_lun); 407 if (tid == IOPSP_TID_ABSENT || tid == IOPSP_TID_INUSE) { 408 xs->error = XS_SELTIMEOUT; 409 scsipi_done(xs); 410 return; 411 } 412 413 /* Need to reset the target? */ 414 if ((flags & XS_CTL_RESET) != 0) { 415 if (iop_simple_cmd(iop, tid, I2O_SCSI_DEVICE_RESET, 416 sc->sc_ii.ii_ictx, 1, 30*1000) != 0) { 417 aprint_error_dev(sc->sc_dev, "reset failed\n"); 418 xs->error = XS_DRIVER_STUFFUP; 419 } else 420 xs->error = XS_NOERROR; 421 422 scsipi_done(xs); 423 return; 424 } 425 426 #if defined(I2ODEBUG) || defined(SCSIDEBUG) 427 if (xs->cmdlen > sizeof(mf->cdb)) 428 panic("%s: CDB too large", device_xname(sc->sc_dev)); 429 #endif 430 431 im = iop_msg_alloc(iop, IM_POLL_INTR | 432 IM_NOSTATUS | ((flags & XS_CTL_POLL) != 0 ? IM_POLL : 0)); 433 im->im_dvcontext = xs; 434 435 mf = (struct i2o_scsi_scb_exec *)mb; 436 mf->msgflags = I2O_MSGFLAGS(i2o_scsi_scb_exec); 437 mf->msgfunc = I2O_MSGFUNC(tid, I2O_SCSI_SCB_EXEC); 438 mf->msgictx = sc->sc_ii.ii_ictx; 439 mf->msgtctx = im->im_tctx; 440 mf->flags = xs->cmdlen | I2O_SCB_FLAG_ENABLE_DISCONNECT | 441 I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE; 442 mf->datalen = xs->datalen; 443 memcpy(mf->cdb, xs->cmd, xs->cmdlen); 444 445 switch (xs->xs_tag_type) { 446 case MSG_ORDERED_Q_TAG: 447 mf->flags |= I2O_SCB_FLAG_ORDERED_QUEUE_TAG; 448 break; 449 case MSG_SIMPLE_Q_TAG: 450 mf->flags |= I2O_SCB_FLAG_SIMPLE_QUEUE_TAG; 451 break; 452 case MSG_HEAD_OF_Q_TAG: 453 mf->flags |= I2O_SCB_FLAG_HEAD_QUEUE_TAG; 454 break; 455 default: 456 break; 457 } 458 459 if (xs->datalen != 0) { 460 error = iop_msg_map_bio(iop, im, mb, xs->data, 461 xs->datalen, (flags & XS_CTL_DATA_OUT) == 0); 462 if (error) { 463 xs->error = XS_DRIVER_STUFFUP; 464 iop_msg_free(iop, im); 465 scsipi_done(xs); 466 return; 467 } 468 if ((flags & XS_CTL_DATA_IN) == 0) 469 mf->flags |= I2O_SCB_FLAG_XFER_TO_DEVICE; 470 else 471 mf->flags |= I2O_SCB_FLAG_XFER_FROM_DEVICE; 472 } 473 474 if (iop_msg_post(iop, im, mb, xs->timeout)) { 475 if (xs->datalen != 0) 476 iop_msg_unmap(iop, im); 477 iop_msg_free(iop, im); 478 xs->error = XS_DRIVER_STUFFUP; 479 scsipi_done(xs); 480 } 481 break; 482 483 case ADAPTER_REQ_GROW_RESOURCES: 484 /* 485 * Not supported. 486 */ 487 break; 488 489 case ADAPTER_REQ_SET_XFER_MODE: 490 /* 491 * The DDM takes care of this, and we can't modify its 492 * behaviour. 493 */ 494 break; 495 } 496 } 497 498 #ifdef notyet 499 /* 500 * Abort the specified I2O_SCSI_SCB_EXEC message and its associated SCB. 501 */ 502 static int 503 iopsp_scsi_abort(struct iopsp_softc *sc, int atid, struct iop_msg *aim) 504 { 505 struct iop_msg *im; 506 struct i2o_scsi_scb_abort mf; 507 struct iop_softc *iop; 508 int rv, s; 509 510 iop = device_private(device_parent(sc->sc_dev)); 511 im = iop_msg_alloc(iop, IM_POLL); 512 513 mf.msgflags = I2O_MSGFLAGS(i2o_scsi_scb_abort); 514 mf.msgfunc = I2O_MSGFUNC(atid, I2O_SCSI_SCB_ABORT); 515 mf.msgictx = sc->sc_ii.ii_ictx; 516 mf.msgtctx = im->im_tctx; 517 mf.tctxabort = aim->im_tctx; 518 519 rv = iop_msg_post(iop, im, &mf, 30000); 520 iop_msg_free(iop, im); 521 522 return (rv); 523 } 524 #endif 525 526 /* 527 * We have a message which has been processed and replied to by the IOP - 528 * deal with it. 529 */ 530 static void 531 iopsp_intr(device_t dv, struct iop_msg *im, void *reply) 532 { 533 struct scsipi_xfer *xs; 534 struct iopsp_softc *sc; 535 struct i2o_scsi_reply *rb; 536 struct iop_softc *iop; 537 u_int sl; 538 539 sc = device_private(dv); 540 xs = im->im_dvcontext; 541 iop = device_private(device_parent(dv)); 542 rb = reply; 543 544 SC_DEBUG(xs->xs_periph, SCSIPI_DB2, ("iopsp_intr\n")); 545 546 if ((rb->msgflags & I2O_MSGFLAGS_FAIL) != 0) { 547 xs->error = XS_DRIVER_STUFFUP; 548 xs->resid = xs->datalen; 549 } else { 550 if (rb->hbastatus != I2O_SCSI_DSC_SUCCESS) { 551 switch (rb->hbastatus) { 552 case I2O_SCSI_DSC_ADAPTER_BUSY: 553 case I2O_SCSI_DSC_SCSI_BUS_RESET: 554 case I2O_SCSI_DSC_BUS_BUSY: 555 xs->error = XS_BUSY; 556 break; 557 case I2O_SCSI_DSC_SELECTION_TIMEOUT: 558 xs->error = XS_SELTIMEOUT; 559 break; 560 case I2O_SCSI_DSC_COMMAND_TIMEOUT: 561 case I2O_SCSI_DSC_DEVICE_NOT_PRESENT: 562 case I2O_SCSI_DSC_LUN_INVALID: 563 case I2O_SCSI_DSC_SCSI_TID_INVALID: 564 xs->error = XS_TIMEOUT; 565 break; 566 default: 567 xs->error = XS_DRIVER_STUFFUP; 568 break; 569 } 570 aprint_error_dev(sc->sc_dev, "HBA status 0x%02x\n", 571 rb->hbastatus); 572 } else if (rb->scsistatus != SCSI_OK) { 573 switch (rb->scsistatus) { 574 case SCSI_CHECK: 575 xs->error = XS_SENSE; 576 sl = le32toh(rb->senselen); 577 if (sl > sizeof(xs->sense.scsi_sense)) 578 sl = sizeof(xs->sense.scsi_sense); 579 memcpy(&xs->sense.scsi_sense, rb->sense, sl); 580 break; 581 case SCSI_QUEUE_FULL: 582 case SCSI_BUSY: 583 xs->error = XS_BUSY; 584 break; 585 default: 586 xs->error = XS_DRIVER_STUFFUP; 587 break; 588 } 589 } else 590 xs->error = XS_NOERROR; 591 592 xs->resid = xs->datalen - le32toh(rb->datalen); 593 xs->status = rb->scsistatus; 594 } 595 596 /* Free the message wrapper and pass the news to scsipi. */ 597 if (xs->datalen != 0) 598 iop_msg_unmap(iop, im); 599 iop_msg_free(iop, im); 600 601 scsipi_done(xs); 602 } 603 604 /* 605 * ioctl hook; used here only to initiate low-level rescans. 606 */ 607 static int 608 iopsp_ioctl(struct scsipi_channel *chan, u_long cmd, void *data, 609 int flag, struct proc *p) 610 { 611 int rv; 612 613 switch (cmd) { 614 case SCBUSIOLLSCAN: 615 /* 616 * If it's boot time, the bus will have been scanned and the 617 * maps built. Locking would stop re-configuration, but we 618 * want to fake success. 619 */ 620 if (curlwp != &lwp0) 621 rv = iopsp_rescan( 622 device_private(chan->chan_adapter->adapt_dev)); 623 else 624 rv = 0; 625 break; 626 627 default: 628 rv = ENOTTY; 629 break; 630 } 631 632 return (rv); 633 } 634 635 /* 636 * The number of openings available to us has changed, so inform scsipi. 637 */ 638 static void 639 iopsp_adjqparam(device_t dv, int mpi) 640 { 641 struct iopsp_softc *sc; 642 struct iop_softc *iop; 643 644 sc = device_private(dv); 645 iop = device_private(device_parent(dv)); 646 647 mutex_spin_enter(&iop->sc_intrlock); 648 sc->sc_adapter.adapt_openings += mpi - sc->sc_openings; 649 sc->sc_openings = mpi; 650 mutex_spin_exit(&iop->sc_intrlock); 651 }
Cache object: 2ac9bebc407cc01499da8719feeaea44
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