1 /*- 2 * Copyright (c) 2009 Silicon Graphics International Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 17 * NO WARRANTY 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGES. 29 * 30 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_frontend_cam_sim.c#4 $ 31 */ 32 /* 33 * CTL frontend to CAM SIM interface. This allows access to CTL LUNs via 34 * the da(4) and pass(4) drivers from inside the system. 35 * 36 * Author: Ken Merry <ken@FreeBSD.org> 37 */ 38 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/types.h> 46 #include <sys/malloc.h> 47 #include <sys/lock.h> 48 #include <sys/mutex.h> 49 #include <sys/condvar.h> 50 #include <sys/queue.h> 51 #include <sys/bus.h> 52 #include <sys/sysctl.h> 53 #include <machine/bus.h> 54 #include <sys/sbuf.h> 55 56 #include <cam/cam.h> 57 #include <cam/cam_ccb.h> 58 #include <cam/cam_sim.h> 59 #include <cam/cam_xpt_sim.h> 60 #include <cam/cam_xpt.h> 61 #include <cam/cam_periph.h> 62 #include <cam/scsi/scsi_all.h> 63 #include <cam/scsi/scsi_message.h> 64 #include <cam/ctl/ctl_io.h> 65 #include <cam/ctl/ctl.h> 66 #include <cam/ctl/ctl_frontend.h> 67 #include <cam/ctl/ctl_debug.h> 68 69 #define io_ptr spriv_ptr1 70 71 struct cfcs_io { 72 union ccb *ccb; 73 }; 74 75 struct cfcs_softc { 76 struct ctl_port port; 77 char port_name[32]; 78 struct cam_sim *sim; 79 struct cam_devq *devq; 80 struct cam_path *path; 81 struct mtx lock; 82 uint64_t wwnn; 83 uint64_t wwpn; 84 uint32_t cur_tag_num; 85 int online; 86 }; 87 88 /* 89 * We can't handle CCBs with these flags. For the most part, we just don't 90 * handle physical addresses yet. That would require mapping things in 91 * order to do the copy. 92 */ 93 #define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 94 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 95 CAM_SENSE_PHYS) 96 97 static int cfcs_init(void); 98 static int cfcs_shutdown(void); 99 static void cfcs_poll(struct cam_sim *sim); 100 static void cfcs_online(void *arg); 101 static void cfcs_offline(void *arg); 102 static void cfcs_datamove(union ctl_io *io); 103 static void cfcs_done(union ctl_io *io); 104 void cfcs_action(struct cam_sim *sim, union ccb *ccb); 105 106 struct cfcs_softc cfcs_softc; 107 /* 108 * This is primarily intended to allow for error injection to test the CAM 109 * sense data and sense residual handling code. This sets the maximum 110 * amount of SCSI sense data that we will report to CAM. 111 */ 112 static int cfcs_max_sense = sizeof(struct scsi_sense_data); 113 114 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 115 "CAM Target Layer SIM frontend"); 116 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 117 &cfcs_max_sense, 0, "Maximum sense data size"); 118 119 static struct ctl_frontend cfcs_frontend = 120 { 121 .name = "camsim", 122 .init = cfcs_init, 123 .shutdown = cfcs_shutdown, 124 }; 125 CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 126 127 static int 128 cfcs_init(void) 129 { 130 struct cfcs_softc *softc; 131 struct ctl_port *port; 132 int retval; 133 134 softc = &cfcs_softc; 135 bzero(softc, sizeof(*softc)); 136 mtx_init(&softc->lock, "ctl2cam", NULL, MTX_DEF); 137 port = &softc->port; 138 139 port->frontend = &cfcs_frontend; 140 port->port_type = CTL_PORT_INTERNAL; 141 /* XXX KDM what should the real number be here? */ 142 port->num_requested_ctl_io = 4096; 143 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 144 port->port_name = softc->port_name; 145 port->port_online = cfcs_online; 146 port->port_offline = cfcs_offline; 147 port->onoff_arg = softc; 148 port->fe_datamove = cfcs_datamove; 149 port->fe_done = cfcs_done; 150 port->targ_port = -1; 151 152 retval = ctl_port_register(port); 153 if (retval != 0) { 154 printf("%s: ctl_port_register() failed with error %d!\n", 155 __func__, retval); 156 mtx_destroy(&softc->lock); 157 return (retval); 158 } 159 160 /* 161 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 162 * ahead and set something random. 163 */ 164 if (port->wwnn == 0) { 165 uint64_t random_bits; 166 167 arc4rand(&random_bits, sizeof(random_bits), 0); 168 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 169 /* Company ID */ 0x5000000000000000ULL | 170 /* NL-Port */ 0x0300; 171 softc->wwpn = softc->wwnn + port->targ_port + 1; 172 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 173 } else { 174 softc->wwnn = port->wwnn; 175 softc->wwpn = port->wwpn; 176 } 177 178 mtx_lock(&softc->lock); 179 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 180 if (softc->devq == NULL) { 181 printf("%s: error allocating devq\n", __func__); 182 retval = ENOMEM; 183 goto bailout; 184 } 185 186 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 187 softc, /*unit*/ 0, &softc->lock, 1, 188 port->num_requested_ctl_io, softc->devq); 189 if (softc->sim == NULL) { 190 printf("%s: error allocating SIM\n", __func__); 191 retval = ENOMEM; 192 goto bailout; 193 } 194 195 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 196 printf("%s: error registering SIM\n", __func__); 197 retval = ENOMEM; 198 goto bailout; 199 } 200 201 if (xpt_create_path(&softc->path, /*periph*/NULL, 202 cam_sim_path(softc->sim), 203 CAM_TARGET_WILDCARD, 204 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 205 printf("%s: error creating path\n", __func__); 206 xpt_bus_deregister(cam_sim_path(softc->sim)); 207 retval = EINVAL; 208 goto bailout; 209 } 210 211 mtx_unlock(&softc->lock); 212 213 return (retval); 214 215 bailout: 216 if (softc->sim) 217 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 218 else if (softc->devq) 219 cam_simq_free(softc->devq); 220 mtx_unlock(&softc->lock); 221 mtx_destroy(&softc->lock); 222 223 return (retval); 224 } 225 226 static int 227 cfcs_shutdown(void) 228 { 229 struct cfcs_softc *softc = &cfcs_softc; 230 struct ctl_port *port = &softc->port; 231 int error; 232 233 ctl_port_offline(port); 234 235 mtx_lock(&softc->lock); 236 xpt_free_path(softc->path); 237 xpt_bus_deregister(cam_sim_path(softc->sim)); 238 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 239 mtx_unlock(&softc->lock); 240 mtx_destroy(&softc->lock); 241 242 if ((error = ctl_port_deregister(port)) != 0) 243 printf("%s: cam_sim port deregistration failed\n", __func__); 244 return (error); 245 } 246 247 static void 248 cfcs_poll(struct cam_sim *sim) 249 { 250 251 } 252 253 static void 254 cfcs_onoffline(void *arg, int online) 255 { 256 struct cfcs_softc *softc; 257 union ccb *ccb; 258 259 softc = (struct cfcs_softc *)arg; 260 261 mtx_lock(&softc->lock); 262 softc->online = online; 263 264 ccb = xpt_alloc_ccb_nowait(); 265 if (ccb == NULL) { 266 printf("%s: unable to allocate CCB for rescan\n", __func__); 267 goto bailout; 268 } 269 270 if (xpt_create_path(&ccb->ccb_h.path, NULL, 271 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 272 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 273 printf("%s: can't allocate path for rescan\n", __func__); 274 xpt_free_ccb(ccb); 275 goto bailout; 276 } 277 xpt_rescan(ccb); 278 279 bailout: 280 mtx_unlock(&softc->lock); 281 } 282 283 static void 284 cfcs_online(void *arg) 285 { 286 cfcs_onoffline(arg, /*online*/ 1); 287 } 288 289 static void 290 cfcs_offline(void *arg) 291 { 292 cfcs_onoffline(arg, /*online*/ 0); 293 } 294 295 /* 296 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 297 * way to combine the functionality? 298 * 299 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 300 * caller's context, which will usually be the backend. That may not be a 301 * good thing. 302 */ 303 static void 304 cfcs_datamove(union ctl_io *io) 305 { 306 union ccb *ccb; 307 bus_dma_segment_t cam_sg_entry, *cam_sglist; 308 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 309 int cam_sg_count, ctl_sg_count, cam_sg_start; 310 int cam_sg_offset; 311 int len_to_copy; 312 int ctl_watermark, cam_watermark; 313 int i, j; 314 315 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 316 317 /* 318 * Note that we have a check in cfcs_action() to make sure that any 319 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 320 * is just to make sure no one removes that check without updating 321 * this code to provide the additional functionality necessary to 322 * support those modes of operation. 323 */ 324 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 325 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 326 327 /* 328 * Simplify things on both sides by putting single buffers into a 329 * single entry S/G list. 330 */ 331 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 332 case CAM_DATA_SG: { 333 int len_seen; 334 335 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 336 cam_sg_count = ccb->csio.sglist_cnt; 337 cam_sg_start = cam_sg_count; 338 cam_sg_offset = 0; 339 340 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 341 if ((len_seen + cam_sglist[i].ds_len) >= 342 io->scsiio.kern_rel_offset) { 343 cam_sg_start = i; 344 cam_sg_offset = io->scsiio.kern_rel_offset - 345 len_seen; 346 break; 347 } 348 len_seen += cam_sglist[i].ds_len; 349 } 350 break; 351 } 352 case CAM_DATA_VADDR: 353 cam_sglist = &cam_sg_entry; 354 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 355 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 356 cam_sg_count = 1; 357 cam_sg_start = 0; 358 cam_sg_offset = io->scsiio.kern_rel_offset; 359 break; 360 default: 361 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 362 } 363 364 if (io->scsiio.kern_sg_entries > 0) { 365 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 366 ctl_sg_count = io->scsiio.kern_sg_entries; 367 } else { 368 ctl_sglist = &ctl_sg_entry; 369 ctl_sglist->addr = io->scsiio.kern_data_ptr; 370 ctl_sglist->len = io->scsiio.kern_data_len; 371 ctl_sg_count = 1; 372 } 373 374 ctl_watermark = 0; 375 cam_watermark = cam_sg_offset; 376 for (i = cam_sg_start, j = 0; 377 i < cam_sg_count && j < ctl_sg_count;) { 378 uint8_t *cam_ptr, *ctl_ptr; 379 380 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 381 ctl_sglist[j].len - ctl_watermark); 382 383 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 384 cam_ptr = cam_ptr + cam_watermark; 385 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 386 /* 387 * XXX KDM fix this! 388 */ 389 panic("need to implement bus address support"); 390 #if 0 391 kern_ptr = bus_to_virt(kern_sglist[j].addr); 392 #endif 393 } else 394 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 395 ctl_ptr = ctl_ptr + ctl_watermark; 396 397 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 398 CTL_FLAG_DATA_IN) { 399 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 400 __func__, len_to_copy)); 401 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 402 __func__, cam_ptr)); 403 bcopy(ctl_ptr, cam_ptr, len_to_copy); 404 } else { 405 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 406 __func__, len_to_copy)); 407 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 408 __func__, ctl_ptr)); 409 bcopy(cam_ptr, ctl_ptr, len_to_copy); 410 } 411 412 io->scsiio.ext_data_filled += len_to_copy; 413 io->scsiio.kern_data_resid -= len_to_copy; 414 415 cam_watermark += len_to_copy; 416 if (cam_sglist[i].ds_len == cam_watermark) { 417 i++; 418 cam_watermark = 0; 419 } 420 421 ctl_watermark += len_to_copy; 422 if (ctl_sglist[j].len == ctl_watermark) { 423 j++; 424 ctl_watermark = 0; 425 } 426 } 427 428 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 429 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 430 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 431 ccb->csio.resid = ccb->csio.dxfer_len - 432 io->scsiio.ext_data_filled; 433 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 434 ccb->ccb_h.status |= CAM_REQ_CMP; 435 xpt_done(ccb); 436 } 437 438 io->scsiio.be_move_done(io); 439 } 440 441 static void 442 cfcs_done(union ctl_io *io) 443 { 444 union ccb *ccb; 445 446 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 447 if (ccb == NULL) { 448 ctl_free_io(io); 449 return; 450 } 451 452 /* 453 * At this point we should have status. If we don't, that's a bug. 454 */ 455 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 456 ("invalid CTL status %#x", io->io_hdr.status)); 457 458 /* 459 * Translate CTL status to CAM status. 460 */ 461 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 462 ccb->csio.resid = ccb->csio.dxfer_len - 463 io->scsiio.ext_data_filled; 464 } 465 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 466 switch (io->io_hdr.status & CTL_STATUS_MASK) { 467 case CTL_SUCCESS: 468 ccb->ccb_h.status |= CAM_REQ_CMP; 469 break; 470 case CTL_SCSI_ERROR: 471 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 472 ccb->csio.scsi_status = io->scsiio.scsi_status; 473 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 474 min(io->scsiio.sense_len, ccb->csio.sense_len)); 475 if (ccb->csio.sense_len > io->scsiio.sense_len) 476 ccb->csio.sense_resid = ccb->csio.sense_len - 477 io->scsiio.sense_len; 478 else 479 ccb->csio.sense_resid = 0; 480 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 481 cfcs_max_sense) { 482 ccb->csio.sense_resid = ccb->csio.sense_len - 483 cfcs_max_sense; 484 } 485 break; 486 case CTL_CMD_ABORTED: 487 ccb->ccb_h.status |= CAM_REQ_ABORTED; 488 break; 489 case CTL_ERROR: 490 default: 491 ccb->ccb_h.status |= CAM_REQ_CMP_ERR; 492 break; 493 } 494 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP && 495 (ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 496 xpt_freeze_devq(ccb->ccb_h.path, 1); 497 ccb->ccb_h.status |= CAM_DEV_QFRZN; 498 } 499 xpt_done(ccb); 500 ctl_free_io(io); 501 } 502 503 void 504 cfcs_action(struct cam_sim *sim, union ccb *ccb) 505 { 506 struct cfcs_softc *softc; 507 int err; 508 509 softc = (struct cfcs_softc *)cam_sim_softc(sim); 510 mtx_assert(&softc->lock, MA_OWNED); 511 512 switch (ccb->ccb_h.func_code) { 513 case XPT_SCSI_IO: { 514 union ctl_io *io; 515 struct ccb_scsiio *csio; 516 517 csio = &ccb->csio; 518 519 /* 520 * Catch CCB flags, like physical address flags, that 521 * indicate situations we currently can't handle. 522 */ 523 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 524 ccb->ccb_h.status = CAM_REQ_INVALID; 525 printf("%s: bad CCB flags %#x (all flags %#x)\n", 526 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 527 ccb->ccb_h.flags); 528 xpt_done(ccb); 529 return; 530 } 531 532 /* 533 * If we aren't online, there are no devices to see. 534 */ 535 if (softc->online == 0) { 536 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 537 xpt_done(ccb); 538 return; 539 } 540 541 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 542 if (io == NULL) { 543 printf("%s: can't allocate ctl_io\n", __func__); 544 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 545 xpt_freeze_devq(ccb->ccb_h.path, 1); 546 xpt_done(ccb); 547 return; 548 } 549 ctl_zero_io(io); 550 /* Save pointers on both sides */ 551 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 552 ccb->ccb_h.io_ptr = io; 553 554 /* 555 * Only SCSI I/O comes down this path, resets, etc. come 556 * down via the XPT_RESET_BUS/LUN CCBs below. 557 */ 558 io->io_hdr.io_type = CTL_IO_SCSI; 559 io->io_hdr.nexus.initid = 1; 560 io->io_hdr.nexus.targ_port = softc->port.targ_port; 561 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 562 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 563 /* 564 * This tag scheme isn't the best, since we could in theory 565 * have a very long-lived I/O and tag collision, especially 566 * in a high I/O environment. But it should work well 567 * enough for now. Since we're using unsigned ints, 568 * they'll just wrap around. 569 */ 570 io->scsiio.tag_num = softc->cur_tag_num++; 571 csio->tag_id = io->scsiio.tag_num; 572 switch (csio->tag_action) { 573 case CAM_TAG_ACTION_NONE: 574 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 575 break; 576 case MSG_SIMPLE_TASK: 577 io->scsiio.tag_type = CTL_TAG_SIMPLE; 578 break; 579 case MSG_HEAD_OF_QUEUE_TASK: 580 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 581 break; 582 case MSG_ORDERED_TASK: 583 io->scsiio.tag_type = CTL_TAG_ORDERED; 584 break; 585 case MSG_ACA_TASK: 586 io->scsiio.tag_type = CTL_TAG_ACA; 587 break; 588 default: 589 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 590 printf("%s: unhandled tag type %#x!!\n", __func__, 591 csio->tag_action); 592 break; 593 } 594 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 595 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 596 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 597 } 598 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 599 bcopy(scsiio_cdb_ptr(csio), io->scsiio.cdb, io->scsiio.cdb_len); 600 601 ccb->ccb_h.status |= CAM_SIM_QUEUED; 602 err = ctl_queue(io); 603 if (err != CTL_RETVAL_COMPLETE) { 604 printf("%s: func %d: error %d returned by " 605 "ctl_queue()!\n", __func__, 606 ccb->ccb_h.func_code, err); 607 ctl_free_io(io); 608 ccb->ccb_h.status = CAM_REQ_INVALID; 609 xpt_done(ccb); 610 return; 611 } 612 break; 613 } 614 case XPT_ABORT: { 615 union ctl_io *io; 616 union ccb *abort_ccb; 617 618 abort_ccb = ccb->cab.abort_ccb; 619 620 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 621 ccb->ccb_h.status = CAM_REQ_INVALID; 622 xpt_done(ccb); 623 } 624 625 /* 626 * If we aren't online, there are no devices to talk to. 627 */ 628 if (softc->online == 0) { 629 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 630 xpt_done(ccb); 631 return; 632 } 633 634 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 635 if (io == NULL) { 636 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 637 xpt_freeze_devq(ccb->ccb_h.path, 1); 638 xpt_done(ccb); 639 return; 640 } 641 642 ctl_zero_io(io); 643 /* Save pointers on both sides */ 644 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 645 ccb->ccb_h.io_ptr = io; 646 647 io->io_hdr.io_type = CTL_IO_TASK; 648 io->io_hdr.nexus.initid = 1; 649 io->io_hdr.nexus.targ_port = softc->port.targ_port; 650 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 651 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 652 io->taskio.task_action = CTL_TASK_ABORT_TASK; 653 io->taskio.tag_num = abort_ccb->csio.tag_id; 654 switch (abort_ccb->csio.tag_action) { 655 case CAM_TAG_ACTION_NONE: 656 io->taskio.tag_type = CTL_TAG_UNTAGGED; 657 break; 658 case MSG_SIMPLE_TASK: 659 io->taskio.tag_type = CTL_TAG_SIMPLE; 660 break; 661 case MSG_HEAD_OF_QUEUE_TASK: 662 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 663 break; 664 case MSG_ORDERED_TASK: 665 io->taskio.tag_type = CTL_TAG_ORDERED; 666 break; 667 case MSG_ACA_TASK: 668 io->taskio.tag_type = CTL_TAG_ACA; 669 break; 670 default: 671 io->taskio.tag_type = CTL_TAG_UNTAGGED; 672 printf("%s: unhandled tag type %#x!!\n", __func__, 673 abort_ccb->csio.tag_action); 674 break; 675 } 676 err = ctl_queue(io); 677 if (err != CTL_RETVAL_COMPLETE) { 678 printf("%s func %d: error %d returned by " 679 "ctl_queue()!\n", __func__, 680 ccb->ccb_h.func_code, err); 681 ctl_free_io(io); 682 } 683 break; 684 } 685 case XPT_GET_TRAN_SETTINGS: { 686 struct ccb_trans_settings *cts; 687 struct ccb_trans_settings_scsi *scsi; 688 struct ccb_trans_settings_fc *fc; 689 690 cts = &ccb->cts; 691 scsi = &cts->proto_specific.scsi; 692 fc = &cts->xport_specific.fc; 693 694 695 cts->protocol = PROTO_SCSI; 696 cts->protocol_version = SCSI_REV_SPC2; 697 cts->transport = XPORT_FC; 698 cts->transport_version = 0; 699 700 scsi->valid = CTS_SCSI_VALID_TQ; 701 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 702 fc->valid = CTS_FC_VALID_SPEED; 703 fc->bitrate = 800000; 704 fc->wwnn = softc->wwnn; 705 fc->wwpn = softc->wwpn; 706 fc->port = softc->port.targ_port; 707 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 708 CTS_FC_VALID_PORT; 709 ccb->ccb_h.status = CAM_REQ_CMP; 710 break; 711 } 712 case XPT_SET_TRAN_SETTINGS: 713 /* XXX KDM should we actually do something here? */ 714 ccb->ccb_h.status = CAM_REQ_CMP; 715 break; 716 case XPT_RESET_BUS: 717 case XPT_RESET_DEV: { 718 union ctl_io *io; 719 720 /* 721 * If we aren't online, there are no devices to talk to. 722 */ 723 if (softc->online == 0) { 724 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 725 xpt_done(ccb); 726 return; 727 } 728 729 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 730 if (io == NULL) { 731 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 732 xpt_freeze_devq(ccb->ccb_h.path, 1); 733 xpt_done(ccb); 734 return; 735 } 736 737 ctl_zero_io(io); 738 /* Save pointers on both sides */ 739 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 740 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 741 ccb->ccb_h.io_ptr = io; 742 743 io->io_hdr.io_type = CTL_IO_TASK; 744 io->io_hdr.nexus.initid = 1; 745 io->io_hdr.nexus.targ_port = softc->port.targ_port; 746 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 747 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 748 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 749 io->taskio.task_action = CTL_TASK_BUS_RESET; 750 else 751 io->taskio.task_action = CTL_TASK_LUN_RESET; 752 753 err = ctl_queue(io); 754 if (err != CTL_RETVAL_COMPLETE) { 755 printf("%s func %d: error %d returned by " 756 "ctl_queue()!\n", __func__, 757 ccb->ccb_h.func_code, err); 758 ctl_free_io(io); 759 } 760 break; 761 } 762 case XPT_CALC_GEOMETRY: 763 cam_calc_geometry(&ccb->ccg, 1); 764 xpt_done(ccb); 765 break; 766 case XPT_PATH_INQ: { 767 struct ccb_pathinq *cpi; 768 769 cpi = &ccb->cpi; 770 771 cpi->version_num = 0; 772 cpi->hba_inquiry = PI_TAG_ABLE; 773 cpi->target_sprt = 0; 774 cpi->hba_misc = PIM_EXTLUNS; 775 cpi->hba_eng_cnt = 0; 776 cpi->max_target = 1; 777 cpi->max_lun = 1024; 778 /* Do we really have a limit? */ 779 cpi->maxio = 1024 * 1024; 780 cpi->async_flags = 0; 781 cpi->hpath_id = 0; 782 cpi->initiator_id = 0; 783 784 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 785 strlcpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 786 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 787 cpi->unit_number = 0; 788 cpi->bus_id = 0; 789 cpi->base_transfer_speed = 800000; 790 cpi->protocol = PROTO_SCSI; 791 cpi->protocol_version = SCSI_REV_SPC2; 792 /* 793 * Pretend to be Fibre Channel. 794 */ 795 cpi->transport = XPORT_FC; 796 cpi->transport_version = 0; 797 cpi->xport_specific.fc.wwnn = softc->wwnn; 798 cpi->xport_specific.fc.wwpn = softc->wwpn; 799 cpi->xport_specific.fc.port = softc->port.targ_port; 800 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 801 cpi->ccb_h.status = CAM_REQ_CMP; 802 break; 803 } 804 default: 805 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 806 printf("%s: unsupported CCB type %#x\n", __func__, 807 ccb->ccb_h.func_code); 808 xpt_done(ccb); 809 break; 810 } 811 } 812