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_frontend_internal.h> 68 #include <cam/ctl/ctl_mem_pool.h> 69 #include <cam/ctl/ctl_debug.h> 70 71 #define io_ptr spriv_ptr1 72 73 struct cfcs_io { 74 union ccb *ccb; 75 }; 76 77 struct cfcs_softc { 78 struct ctl_frontend fe; 79 char port_name[32]; 80 struct cam_sim *sim; 81 struct cam_devq *devq; 82 struct cam_path *path; 83 struct mtx lock; 84 char lock_desc[32]; 85 uint64_t wwnn; 86 uint64_t wwpn; 87 uint32_t cur_tag_num; 88 int online; 89 }; 90 91 /* 92 * We can't handle CCBs with these flags. For the most part, we just don't 93 * handle physical addresses yet. That would require mapping things in 94 * order to do the copy. 95 */ 96 #define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 97 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 98 CAM_SENSE_PHYS) 99 100 int cfcs_init(void); 101 void cfcs_shutdown(void); 102 static void cfcs_poll(struct cam_sim *sim); 103 static void cfcs_online(void *arg); 104 static void cfcs_offline(void *arg); 105 static int cfcs_targ_enable(void *arg, struct ctl_id targ_id); 106 static int cfcs_targ_disable(void *arg, struct ctl_id targ_id); 107 static int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id); 108 static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id); 109 static void cfcs_datamove(union ctl_io *io); 110 static void cfcs_done(union ctl_io *io); 111 void cfcs_action(struct cam_sim *sim, union ccb *ccb); 112 static void cfcs_async(void *callback_arg, uint32_t code, 113 struct cam_path *path, void *arg); 114 115 struct cfcs_softc cfcs_softc; 116 /* 117 * This is primarly intended to allow for error injection to test the CAM 118 * sense data and sense residual handling code. This sets the maximum 119 * amount of SCSI sense data that we will report to CAM. 120 */ 121 static int cfcs_max_sense = sizeof(struct scsi_sense_data); 122 123 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 124 "CAM Target Layer SIM frontend"); 125 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 126 &cfcs_max_sense, 0, "Maximum sense data size"); 127 128 static int cfcs_module_event_handler(module_t, int /*modeventtype_t*/, void *); 129 130 static moduledata_t cfcs_moduledata = { 131 "ctlcfcs", 132 cfcs_module_event_handler, 133 NULL 134 }; 135 136 DECLARE_MODULE(ctlcfcs, cfcs_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 137 MODULE_VERSION(ctlcfcs, 1); 138 MODULE_DEPEND(ctlcfi, ctl, 1, 1, 1); 139 MODULE_DEPEND(ctlcfi, cam, 1, 1, 1); 140 141 int 142 cfcs_init(void) 143 { 144 struct cfcs_softc *softc; 145 struct ccb_setasync csa; 146 struct ctl_frontend *fe; 147 #ifdef NEEDTOPORT 148 char wwnn[8]; 149 #endif 150 int retval; 151 152 softc = &cfcs_softc; 153 retval = 0; 154 bzero(softc, sizeof(*softc)); 155 sprintf(softc->lock_desc, "ctl2cam"); 156 mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF); 157 fe = &softc->fe; 158 159 fe->port_type = CTL_PORT_INTERNAL; 160 /* XXX KDM what should the real number be here? */ 161 fe->num_requested_ctl_io = 4096; 162 snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam"); 163 fe->port_name = softc->port_name; 164 fe->port_online = cfcs_online; 165 fe->port_offline = cfcs_offline; 166 fe->onoff_arg = softc; 167 fe->targ_enable = cfcs_targ_enable; 168 fe->targ_disable = cfcs_targ_disable; 169 fe->lun_enable = cfcs_lun_enable; 170 fe->lun_disable = cfcs_lun_disable; 171 fe->targ_lun_arg = softc; 172 fe->fe_datamove = cfcs_datamove; 173 fe->fe_done = cfcs_done; 174 175 /* XXX KDM what should we report here? */ 176 /* XXX These should probably be fetched from CTL. */ 177 fe->max_targets = 1; 178 fe->max_target_id = 15; 179 180 retval = ctl_frontend_register(fe, /*master_SC*/ 1); 181 if (retval != 0) { 182 printf("%s: ctl_frontend_register() failed with error %d!\n", 183 __func__, retval); 184 mtx_destroy(&softc->lock); 185 return (retval); 186 } 187 188 /* 189 * Get the WWNN out of the database, and create a WWPN as well. 190 */ 191 #ifdef NEEDTOPORT 192 ddb_GetWWNN((char *)wwnn); 193 softc->wwnn = be64dec(wwnn); 194 softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff); 195 #endif 196 197 /* 198 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 199 * ahead and set something random. 200 */ 201 if (fe->wwnn == 0) { 202 uint64_t random_bits; 203 204 arc4rand(&random_bits, sizeof(random_bits), 0); 205 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 206 /* Company ID */ 0x5000000000000000ULL | 207 /* NL-Port */ 0x0300; 208 softc->wwpn = softc->wwnn + fe->targ_port + 1; 209 fe->wwnn = softc->wwnn; 210 fe->wwpn = softc->wwpn; 211 } else { 212 softc->wwnn = fe->wwnn; 213 softc->wwpn = fe->wwpn; 214 } 215 216 mtx_lock(&softc->lock); 217 softc->devq = cam_simq_alloc(fe->num_requested_ctl_io); 218 if (softc->devq == NULL) { 219 printf("%s: error allocating devq\n", __func__); 220 retval = ENOMEM; 221 goto bailout; 222 } 223 224 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 225 softc, /*unit*/ 0, &softc->lock, 1, 226 fe->num_requested_ctl_io, softc->devq); 227 if (softc->sim == NULL) { 228 printf("%s: error allocating SIM\n", __func__); 229 retval = ENOMEM; 230 goto bailout; 231 } 232 233 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 234 printf("%s: error registering SIM\n", __func__); 235 retval = ENOMEM; 236 goto bailout; 237 } 238 239 if (xpt_create_path(&softc->path, /*periph*/NULL, 240 cam_sim_path(softc->sim), 241 CAM_TARGET_WILDCARD, 242 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 243 printf("%s: error creating path\n", __func__); 244 xpt_bus_deregister(cam_sim_path(softc->sim)); 245 retval = EINVAL; 246 goto bailout; 247 } 248 249 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 250 csa.ccb_h.func_code = XPT_SASYNC_CB; 251 csa.event_enable = AC_LOST_DEVICE; 252 csa.callback = cfcs_async; 253 csa.callback_arg = softc->sim; 254 xpt_action((union ccb *)&csa); 255 256 mtx_unlock(&softc->lock); 257 258 return (retval); 259 260 bailout: 261 if (softc->sim) 262 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 263 else if (softc->devq) 264 cam_simq_free(softc->devq); 265 mtx_unlock(&softc->lock); 266 mtx_destroy(&softc->lock); 267 268 return (retval); 269 } 270 271 static void 272 cfcs_poll(struct cam_sim *sim) 273 { 274 275 } 276 277 void 278 cfcs_shutdown(void) 279 { 280 281 } 282 283 static int 284 cfcs_module_event_handler(module_t mod, int what, void *arg) 285 { 286 287 switch (what) { 288 case MOD_LOAD: 289 return (cfcs_init()); 290 case MOD_UNLOAD: 291 return (EBUSY); 292 default: 293 return (EOPNOTSUPP); 294 } 295 } 296 297 static void 298 cfcs_onoffline(void *arg, int online) 299 { 300 struct cfcs_softc *softc; 301 union ccb *ccb; 302 303 softc = (struct cfcs_softc *)arg; 304 305 mtx_lock(&softc->lock); 306 softc->online = online; 307 308 ccb = xpt_alloc_ccb_nowait(); 309 if (ccb == NULL) { 310 printf("%s: unable to allocate CCB for rescan\n", __func__); 311 goto bailout; 312 } 313 314 if (xpt_create_path(&ccb->ccb_h.path, NULL, 315 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 316 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 317 printf("%s: can't allocate path for rescan\n", __func__); 318 xpt_free_ccb(ccb); 319 goto bailout; 320 } 321 xpt_rescan(ccb); 322 323 bailout: 324 mtx_unlock(&softc->lock); 325 } 326 327 static void 328 cfcs_online(void *arg) 329 { 330 cfcs_onoffline(arg, /*online*/ 1); 331 } 332 333 static void 334 cfcs_offline(void *arg) 335 { 336 cfcs_onoffline(arg, /*online*/ 0); 337 } 338 339 static int 340 cfcs_targ_enable(void *arg, struct ctl_id targ_id) 341 { 342 return (0); 343 } 344 345 static int 346 cfcs_targ_disable(void *arg, struct ctl_id targ_id) 347 { 348 return (0); 349 } 350 351 static int 352 cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 353 { 354 return (0); 355 } 356 static int 357 cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 358 { 359 return (0); 360 } 361 362 /* 363 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 364 * way to combine the functionality? 365 * 366 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 367 * caller's context, which will usually be the backend. That may not be a 368 * good thing. 369 */ 370 static void 371 cfcs_datamove(union ctl_io *io) 372 { 373 union ccb *ccb; 374 bus_dma_segment_t cam_sg_entry, *cam_sglist; 375 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 376 int cam_sg_count, ctl_sg_count, cam_sg_start; 377 int cam_sg_offset; 378 int len_to_copy, len_copied; 379 int ctl_watermark, cam_watermark; 380 int i, j; 381 382 383 cam_sg_offset = 0; 384 cam_sg_start = 0; 385 386 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 387 388 /* 389 * Note that we have a check in cfcs_action() to make sure that any 390 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 391 * is just to make sure no one removes that check without updating 392 * this code to provide the additional functionality necessary to 393 * support those modes of operation. 394 */ 395 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 396 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 397 398 /* 399 * Simplify things on both sides by putting single buffers into a 400 * single entry S/G list. 401 */ 402 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 403 case CAM_DATA_SG: { 404 int len_seen; 405 406 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 407 cam_sg_count = ccb->csio.sglist_cnt; 408 409 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 410 if ((len_seen + cam_sglist[i].ds_len) >= 411 io->scsiio.kern_rel_offset) { 412 cam_sg_start = i; 413 cam_sg_offset = io->scsiio.kern_rel_offset - 414 len_seen; 415 break; 416 } 417 len_seen += cam_sglist[i].ds_len; 418 } 419 break; 420 } 421 case CAM_DATA_VADDR: 422 cam_sglist = &cam_sg_entry; 423 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 424 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 425 cam_sg_count = 1; 426 cam_sg_start = 0; 427 cam_sg_offset = io->scsiio.kern_rel_offset; 428 break; 429 default: 430 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 431 } 432 433 if (io->scsiio.kern_sg_entries > 0) { 434 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 435 ctl_sg_count = io->scsiio.kern_sg_entries; 436 } else { 437 ctl_sglist = &ctl_sg_entry; 438 ctl_sglist->addr = io->scsiio.kern_data_ptr; 439 ctl_sglist->len = io->scsiio.kern_data_len; 440 ctl_sg_count = 1; 441 } 442 443 ctl_watermark = 0; 444 cam_watermark = cam_sg_offset; 445 len_copied = 0; 446 for (i = cam_sg_start, j = 0; 447 i < cam_sg_count && j < ctl_sg_count;) { 448 uint8_t *cam_ptr, *ctl_ptr; 449 450 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 451 ctl_sglist[j].len - ctl_watermark); 452 453 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 454 cam_ptr = cam_ptr + cam_watermark; 455 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 456 /* 457 * XXX KDM fix this! 458 */ 459 panic("need to implement bus address support"); 460 #if 0 461 kern_ptr = bus_to_virt(kern_sglist[j].addr); 462 #endif 463 } else 464 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 465 ctl_ptr = ctl_ptr + ctl_watermark; 466 467 ctl_watermark += len_to_copy; 468 cam_watermark += len_to_copy; 469 470 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 471 CTL_FLAG_DATA_IN) { 472 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 473 __func__, len_to_copy)); 474 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 475 __func__, cam_ptr)); 476 bcopy(ctl_ptr, cam_ptr, len_to_copy); 477 } else { 478 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 479 __func__, len_to_copy)); 480 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 481 __func__, ctl_ptr)); 482 bcopy(cam_ptr, ctl_ptr, len_to_copy); 483 } 484 485 len_copied += len_to_copy; 486 487 if (cam_sglist[i].ds_len == cam_watermark) { 488 i++; 489 cam_watermark = 0; 490 } 491 492 if (ctl_sglist[j].len == ctl_watermark) { 493 j++; 494 ctl_watermark = 0; 495 } 496 } 497 498 io->scsiio.ext_data_filled += len_copied; 499 500 io->scsiio.be_move_done(io); 501 } 502 503 static void 504 cfcs_done(union ctl_io *io) 505 { 506 union ccb *ccb; 507 508 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 509 510 /* 511 * At this point we should have status. If we don't, that's a bug. 512 */ 513 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 514 ("invalid CTL status %#x", io->io_hdr.status)); 515 516 /* 517 * Translate CTL status to CAM status. 518 */ 519 switch (io->io_hdr.status & CTL_STATUS_MASK) { 520 case CTL_SUCCESS: 521 ccb->ccb_h.status = CAM_REQ_CMP; 522 break; 523 case CTL_SCSI_ERROR: 524 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 525 ccb->csio.scsi_status = io->scsiio.scsi_status; 526 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 527 min(io->scsiio.sense_len, ccb->csio.sense_len)); 528 if (ccb->csio.sense_len > io->scsiio.sense_len) 529 ccb->csio.sense_resid = ccb->csio.sense_len - 530 io->scsiio.sense_len; 531 else 532 ccb->csio.sense_resid = 0; 533 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 534 cfcs_max_sense) { 535 ccb->csio.sense_resid = ccb->csio.sense_len - 536 cfcs_max_sense; 537 } 538 break; 539 case CTL_CMD_ABORTED: 540 ccb->ccb_h.status = CAM_REQ_ABORTED; 541 break; 542 case CTL_ERROR: 543 default: 544 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 545 break; 546 } 547 548 xpt_done(ccb); 549 ctl_free_io(io); 550 } 551 552 void 553 cfcs_action(struct cam_sim *sim, union ccb *ccb) 554 { 555 struct cfcs_softc *softc; 556 int err; 557 558 softc = (struct cfcs_softc *)cam_sim_softc(sim); 559 mtx_assert(&softc->lock, MA_OWNED); 560 561 switch (ccb->ccb_h.func_code) { 562 case XPT_SCSI_IO: { 563 union ctl_io *io; 564 struct ccb_scsiio *csio; 565 566 csio = &ccb->csio; 567 568 /* 569 * Catch CCB flags, like physical address flags, that 570 * indicate situations we currently can't handle. 571 */ 572 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 573 ccb->ccb_h.status = CAM_REQ_INVALID; 574 printf("%s: bad CCB flags %#x (all flags %#x)\n", 575 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 576 ccb->ccb_h.flags); 577 xpt_done(ccb); 578 return; 579 } 580 581 /* 582 * If we aren't online, there are no devices to see. 583 */ 584 if (softc->online == 0) { 585 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 586 xpt_done(ccb); 587 return; 588 } 589 590 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 591 if (io == NULL) { 592 printf("%s: can't allocate ctl_io\n", __func__); 593 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 594 xpt_freeze_devq(ccb->ccb_h.path, 1); 595 xpt_done(ccb); 596 return; 597 } 598 ctl_zero_io(io); 599 /* Save pointers on both sides */ 600 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 601 ccb->ccb_h.io_ptr = io; 602 603 /* 604 * Only SCSI I/O comes down this path, resets, etc. come 605 * down via the XPT_RESET_BUS/LUN CCBs below. 606 */ 607 io->io_hdr.io_type = CTL_IO_SCSI; 608 io->io_hdr.nexus.initid.id = 1; 609 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 610 /* 611 * XXX KDM how do we handle target IDs? 612 */ 613 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 614 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 615 /* 616 * This tag scheme isn't the best, since we could in theory 617 * have a very long-lived I/O and tag collision, especially 618 * in a high I/O environment. But it should work well 619 * enough for now. Since we're using unsigned ints, 620 * they'll just wrap around. 621 */ 622 io->scsiio.tag_num = softc->cur_tag_num++; 623 csio->tag_id = io->scsiio.tag_num; 624 switch (csio->tag_action) { 625 case CAM_TAG_ACTION_NONE: 626 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 627 break; 628 case MSG_SIMPLE_TASK: 629 io->scsiio.tag_type = CTL_TAG_SIMPLE; 630 break; 631 case MSG_HEAD_OF_QUEUE_TASK: 632 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 633 break; 634 case MSG_ORDERED_TASK: 635 io->scsiio.tag_type = CTL_TAG_ORDERED; 636 break; 637 case MSG_ACA_TASK: 638 io->scsiio.tag_type = CTL_TAG_ACA; 639 break; 640 default: 641 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 642 printf("%s: unhandled tag type %#x!!\n", __func__, 643 csio->tag_action); 644 break; 645 } 646 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 647 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 648 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 649 } 650 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 651 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 652 io->scsiio.cdb_len); 653 654 err = ctl_queue(io); 655 if (err != CTL_RETVAL_COMPLETE) { 656 printf("%s: func %d: error %d returned by " 657 "ctl_queue()!\n", __func__, 658 ccb->ccb_h.func_code, err); 659 ctl_free_io(io); 660 } else { 661 ccb->ccb_h.status |= CAM_SIM_QUEUED; 662 } 663 break; 664 } 665 case XPT_ABORT: { 666 union ctl_io *io; 667 union ccb *abort_ccb; 668 669 abort_ccb = ccb->cab.abort_ccb; 670 671 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 672 ccb->ccb_h.status = CAM_REQ_INVALID; 673 xpt_done(ccb); 674 } 675 676 /* 677 * If we aren't online, there are no devices to talk to. 678 */ 679 if (softc->online == 0) { 680 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 681 xpt_done(ccb); 682 return; 683 } 684 685 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 686 if (io == NULL) { 687 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 688 xpt_freeze_devq(ccb->ccb_h.path, 1); 689 xpt_done(ccb); 690 return; 691 } 692 693 ctl_zero_io(io); 694 /* Save pointers on both sides */ 695 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 696 ccb->ccb_h.io_ptr = io; 697 698 io->io_hdr.io_type = CTL_IO_TASK; 699 io->io_hdr.nexus.initid.id = 1; 700 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 701 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 702 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 703 io->taskio.task_action = CTL_TASK_ABORT_TASK; 704 io->taskio.tag_num = abort_ccb->csio.tag_id; 705 switch (abort_ccb->csio.tag_action) { 706 case CAM_TAG_ACTION_NONE: 707 io->taskio.tag_type = CTL_TAG_UNTAGGED; 708 break; 709 case MSG_SIMPLE_TASK: 710 io->taskio.tag_type = CTL_TAG_SIMPLE; 711 break; 712 case MSG_HEAD_OF_QUEUE_TASK: 713 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 714 break; 715 case MSG_ORDERED_TASK: 716 io->taskio.tag_type = CTL_TAG_ORDERED; 717 break; 718 case MSG_ACA_TASK: 719 io->taskio.tag_type = CTL_TAG_ACA; 720 break; 721 default: 722 io->taskio.tag_type = CTL_TAG_UNTAGGED; 723 printf("%s: unhandled tag type %#x!!\n", __func__, 724 abort_ccb->csio.tag_action); 725 break; 726 } 727 err = ctl_queue(io); 728 if (err != CTL_RETVAL_COMPLETE) { 729 printf("%s func %d: error %d returned by " 730 "ctl_queue()!\n", __func__, 731 ccb->ccb_h.func_code, err); 732 ctl_free_io(io); 733 } 734 break; 735 } 736 case XPT_GET_TRAN_SETTINGS: { 737 struct ccb_trans_settings *cts; 738 struct ccb_trans_settings_scsi *scsi; 739 struct ccb_trans_settings_fc *fc; 740 741 cts = &ccb->cts; 742 scsi = &cts->proto_specific.scsi; 743 fc = &cts->xport_specific.fc; 744 745 746 cts->protocol = PROTO_SCSI; 747 cts->protocol_version = SCSI_REV_SPC2; 748 cts->transport = XPORT_FC; 749 cts->transport_version = 0; 750 751 scsi->valid = CTS_SCSI_VALID_TQ; 752 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 753 fc->valid = CTS_FC_VALID_SPEED; 754 fc->bitrate = 800000; 755 fc->wwnn = softc->wwnn; 756 fc->wwpn = softc->wwpn; 757 fc->port = softc->fe.targ_port; 758 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 759 CTS_FC_VALID_PORT; 760 ccb->ccb_h.status = CAM_REQ_CMP; 761 break; 762 } 763 case XPT_SET_TRAN_SETTINGS: 764 /* XXX KDM should we actually do something here? */ 765 ccb->ccb_h.status = CAM_REQ_CMP; 766 break; 767 case XPT_RESET_BUS: 768 case XPT_RESET_DEV: { 769 union ctl_io *io; 770 771 /* 772 * If we aren't online, there are no devices to talk to. 773 */ 774 if (softc->online == 0) { 775 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 776 xpt_done(ccb); 777 return; 778 } 779 780 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 781 if (io == NULL) { 782 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 783 xpt_freeze_devq(ccb->ccb_h.path, 1); 784 xpt_done(ccb); 785 return; 786 } 787 788 ctl_zero_io(io); 789 /* Save pointers on both sides */ 790 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 791 ccb->ccb_h.io_ptr = io; 792 793 io->io_hdr.io_type = CTL_IO_TASK; 794 io->io_hdr.nexus.initid.id = 0; 795 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 796 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 797 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 798 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 799 io->taskio.task_action = CTL_TASK_BUS_RESET; 800 else 801 io->taskio.task_action = CTL_TASK_LUN_RESET; 802 803 err = ctl_queue(io); 804 if (err != CTL_RETVAL_COMPLETE) { 805 printf("%s func %d: error %d returned by " 806 "ctl_queue()!\n", __func__, 807 ccb->ccb_h.func_code, err); 808 ctl_free_io(io); 809 } 810 break; 811 } 812 case XPT_CALC_GEOMETRY: 813 cam_calc_geometry(&ccb->ccg, 1); 814 xpt_done(ccb); 815 break; 816 case XPT_PATH_INQ: { 817 struct ccb_pathinq *cpi; 818 819 cpi = &ccb->cpi; 820 821 cpi->version_num = 0; 822 cpi->hba_inquiry = PI_TAG_ABLE; 823 cpi->target_sprt = 0; 824 cpi->hba_misc = 0; 825 cpi->hba_eng_cnt = 0; 826 cpi->max_target = 1; 827 cpi->max_lun = 1024; 828 /* Do we really have a limit? */ 829 cpi->maxio = 1024 * 1024; 830 cpi->async_flags = 0; 831 cpi->hpath_id = 0; 832 cpi->initiator_id = 0; 833 834 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 835 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 836 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 837 cpi->unit_number = 0; 838 cpi->bus_id = 0; 839 cpi->base_transfer_speed = 800000; 840 cpi->protocol = PROTO_SCSI; 841 cpi->protocol_version = SCSI_REV_SPC2; 842 /* 843 * Pretend to be Fibre Channel. 844 */ 845 cpi->transport = XPORT_FC; 846 cpi->transport_version = 0; 847 cpi->xport_specific.fc.wwnn = softc->wwnn; 848 cpi->xport_specific.fc.wwpn = softc->wwpn; 849 cpi->xport_specific.fc.port = softc->fe.targ_port; 850 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 851 cpi->ccb_h.status = CAM_REQ_CMP; 852 break; 853 } 854 default: 855 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 856 printf("%s: unsupported CCB type %#x\n", __func__, 857 ccb->ccb_h.func_code); 858 xpt_done(ccb); 859 break; 860 } 861 } 862 863 static void 864 cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 865 { 866 867 } 868