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 extern int ctl_disable; 123 124 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 125 "CAM Target Layer SIM frontend"); 126 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 127 &cfcs_max_sense, 0, "Maximum sense data size"); 128 129 static int cfcs_module_event_handler(module_t, int /*modeventtype_t*/, void *); 130 131 static moduledata_t cfcs_moduledata = { 132 "ctlcfcs", 133 cfcs_module_event_handler, 134 NULL 135 }; 136 137 DECLARE_MODULE(ctlcfcs, cfcs_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 138 MODULE_VERSION(ctlcfcs, 1); 139 MODULE_DEPEND(ctlcfi, ctl, 1, 1, 1); 140 MODULE_DEPEND(ctlcfi, cam, 1, 1, 1); 141 142 int 143 cfcs_init(void) 144 { 145 struct cfcs_softc *softc; 146 struct ccb_setasync csa; 147 struct ctl_frontend *fe; 148 #ifdef NEEDTOPORT 149 char wwnn[8]; 150 #endif 151 int retval; 152 153 /* Don't continue if CTL is disabled */ 154 if (ctl_disable != 0) 155 return (0); 156 157 softc = &cfcs_softc; 158 retval = 0; 159 bzero(softc, sizeof(*softc)); 160 sprintf(softc->lock_desc, "ctl2cam"); 161 mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF); 162 fe = &softc->fe; 163 164 fe->port_type = CTL_PORT_INTERNAL; 165 /* XXX KDM what should the real number be here? */ 166 fe->num_requested_ctl_io = 4096; 167 snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam"); 168 fe->port_name = softc->port_name; 169 fe->port_online = cfcs_online; 170 fe->port_offline = cfcs_offline; 171 fe->onoff_arg = softc; 172 fe->targ_enable = cfcs_targ_enable; 173 fe->targ_disable = cfcs_targ_disable; 174 fe->lun_enable = cfcs_lun_enable; 175 fe->lun_disable = cfcs_lun_disable; 176 fe->targ_lun_arg = softc; 177 fe->fe_datamove = cfcs_datamove; 178 fe->fe_done = cfcs_done; 179 180 /* XXX KDM what should we report here? */ 181 /* XXX These should probably be fetched from CTL. */ 182 fe->max_targets = 1; 183 fe->max_target_id = 15; 184 185 retval = ctl_frontend_register(fe, /*master_SC*/ 1); 186 if (retval != 0) { 187 printf("%s: ctl_frontend_register() failed with error %d!\n", 188 __func__, retval); 189 mtx_destroy(&softc->lock); 190 return (retval); 191 } 192 193 /* 194 * Get the WWNN out of the database, and create a WWPN as well. 195 */ 196 #ifdef NEEDTOPORT 197 ddb_GetWWNN((char *)wwnn); 198 softc->wwnn = be64dec(wwnn); 199 softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff); 200 #endif 201 202 /* 203 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 204 * ahead and set something random. 205 */ 206 if (fe->wwnn == 0) { 207 uint64_t random_bits; 208 209 arc4rand(&random_bits, sizeof(random_bits), 0); 210 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 211 /* Company ID */ 0x5000000000000000ULL | 212 /* NL-Port */ 0x0300; 213 softc->wwpn = softc->wwnn + fe->targ_port + 1; 214 fe->wwnn = softc->wwnn; 215 fe->wwpn = softc->wwpn; 216 } else { 217 softc->wwnn = fe->wwnn; 218 softc->wwpn = fe->wwpn; 219 } 220 221 mtx_lock(&softc->lock); 222 softc->devq = cam_simq_alloc(fe->num_requested_ctl_io); 223 if (softc->devq == NULL) { 224 printf("%s: error allocating devq\n", __func__); 225 retval = ENOMEM; 226 goto bailout; 227 } 228 229 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 230 softc, /*unit*/ 0, &softc->lock, 1, 231 fe->num_requested_ctl_io, softc->devq); 232 if (softc->sim == NULL) { 233 printf("%s: error allocating SIM\n", __func__); 234 retval = ENOMEM; 235 goto bailout; 236 } 237 238 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 239 printf("%s: error registering SIM\n", __func__); 240 retval = ENOMEM; 241 goto bailout; 242 } 243 244 if (xpt_create_path(&softc->path, /*periph*/NULL, 245 cam_sim_path(softc->sim), 246 CAM_TARGET_WILDCARD, 247 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 248 printf("%s: error creating path\n", __func__); 249 xpt_bus_deregister(cam_sim_path(softc->sim)); 250 retval = EINVAL; 251 goto bailout; 252 } 253 254 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 255 csa.ccb_h.func_code = XPT_SASYNC_CB; 256 csa.event_enable = AC_LOST_DEVICE; 257 csa.callback = cfcs_async; 258 csa.callback_arg = softc->sim; 259 xpt_action((union ccb *)&csa); 260 261 mtx_unlock(&softc->lock); 262 263 return (retval); 264 265 bailout: 266 if (softc->sim) 267 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 268 else if (softc->devq) 269 cam_simq_free(softc->devq); 270 mtx_unlock(&softc->lock); 271 mtx_destroy(&softc->lock); 272 273 return (retval); 274 } 275 276 static void 277 cfcs_poll(struct cam_sim *sim) 278 { 279 280 } 281 282 void 283 cfcs_shutdown(void) 284 { 285 286 } 287 288 static int 289 cfcs_module_event_handler(module_t mod, int what, void *arg) 290 { 291 292 switch (what) { 293 case MOD_LOAD: 294 return (cfcs_init()); 295 case MOD_UNLOAD: 296 return (EBUSY); 297 default: 298 return (EOPNOTSUPP); 299 } 300 } 301 302 static void 303 cfcs_onoffline(void *arg, int online) 304 { 305 struct cfcs_softc *softc; 306 union ccb *ccb; 307 308 softc = (struct cfcs_softc *)arg; 309 310 mtx_lock(&softc->lock); 311 softc->online = online; 312 313 ccb = xpt_alloc_ccb_nowait(); 314 if (ccb == NULL) { 315 printf("%s: unable to allocate CCB for rescan\n", __func__); 316 goto bailout; 317 } 318 319 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 320 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 321 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 322 printf("%s: can't allocate path for rescan\n", __func__); 323 xpt_free_ccb(ccb); 324 goto bailout; 325 } 326 xpt_rescan(ccb); 327 328 bailout: 329 mtx_unlock(&softc->lock); 330 } 331 332 static void 333 cfcs_online(void *arg) 334 { 335 cfcs_onoffline(arg, /*online*/ 1); 336 } 337 338 static void 339 cfcs_offline(void *arg) 340 { 341 cfcs_onoffline(arg, /*online*/ 0); 342 } 343 344 static int 345 cfcs_targ_enable(void *arg, struct ctl_id targ_id) 346 { 347 return (0); 348 } 349 350 static int 351 cfcs_targ_disable(void *arg, struct ctl_id targ_id) 352 { 353 return (0); 354 } 355 356 static int 357 cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 358 { 359 return (0); 360 } 361 static int 362 cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 363 { 364 return (0); 365 } 366 367 /* 368 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 369 * way to combine the functionality? 370 * 371 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 372 * caller's context, which will usually be the backend. That may not be a 373 * good thing. 374 */ 375 static void 376 cfcs_datamove(union ctl_io *io) 377 { 378 union ccb *ccb; 379 bus_dma_segment_t cam_sg_entry, *cam_sglist; 380 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 381 int cam_sg_count, ctl_sg_count, cam_sg_start; 382 int cam_sg_offset; 383 int len_to_copy, len_copied; 384 int ctl_watermark, cam_watermark; 385 int i, j; 386 387 388 cam_sg_offset = 0; 389 cam_sg_start = 0; 390 391 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 392 393 /* 394 * Note that we have a check in cfcs_action() to make sure that any 395 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 396 * is just to make sure no one removes that check without updating 397 * this code to provide the additional functionality necessary to 398 * support those modes of operation. 399 */ 400 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 401 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 402 403 /* 404 * Simplify things on both sides by putting single buffers into a 405 * single entry S/G list. 406 */ 407 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 408 case CAM_DATA_SG: { 409 int len_seen; 410 411 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 412 cam_sg_count = ccb->csio.sglist_cnt; 413 414 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 415 if ((len_seen + cam_sglist[i].ds_len) >= 416 io->scsiio.kern_rel_offset) { 417 cam_sg_start = i; 418 cam_sg_offset = io->scsiio.kern_rel_offset - 419 len_seen; 420 break; 421 } 422 len_seen += cam_sglist[i].ds_len; 423 } 424 break; 425 } 426 case CAM_DATA_VADDR: 427 cam_sglist = &cam_sg_entry; 428 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 429 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 430 cam_sg_count = 1; 431 cam_sg_start = 0; 432 cam_sg_offset = io->scsiio.kern_rel_offset; 433 break; 434 default: 435 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 436 } 437 438 if (io->scsiio.kern_sg_entries > 0) { 439 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 440 ctl_sg_count = io->scsiio.kern_sg_entries; 441 } else { 442 ctl_sglist = &ctl_sg_entry; 443 ctl_sglist->addr = io->scsiio.kern_data_ptr; 444 ctl_sglist->len = io->scsiio.kern_data_len; 445 ctl_sg_count = 1; 446 } 447 448 ctl_watermark = 0; 449 cam_watermark = cam_sg_offset; 450 len_copied = 0; 451 for (i = cam_sg_start, j = 0; 452 i < cam_sg_count && j < ctl_sg_count;) { 453 uint8_t *cam_ptr, *ctl_ptr; 454 455 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 456 ctl_sglist[j].len - ctl_watermark); 457 458 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 459 cam_ptr = cam_ptr + cam_watermark; 460 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 461 /* 462 * XXX KDM fix this! 463 */ 464 panic("need to implement bus address support"); 465 #if 0 466 kern_ptr = bus_to_virt(kern_sglist[j].addr); 467 #endif 468 } else 469 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 470 ctl_ptr = ctl_ptr + ctl_watermark; 471 472 ctl_watermark += len_to_copy; 473 cam_watermark += len_to_copy; 474 475 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 476 CTL_FLAG_DATA_IN) { 477 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 478 __func__, len_to_copy)); 479 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 480 __func__, cam_ptr)); 481 bcopy(ctl_ptr, cam_ptr, len_to_copy); 482 } else { 483 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 484 __func__, len_to_copy)); 485 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 486 __func__, ctl_ptr)); 487 bcopy(cam_ptr, ctl_ptr, len_to_copy); 488 } 489 490 len_copied += len_to_copy; 491 492 if (cam_sglist[i].ds_len == cam_watermark) { 493 i++; 494 cam_watermark = 0; 495 } 496 497 if (ctl_sglist[j].len == ctl_watermark) { 498 j++; 499 ctl_watermark = 0; 500 } 501 } 502 503 io->scsiio.ext_data_filled += len_copied; 504 505 io->scsiio.be_move_done(io); 506 } 507 508 static void 509 cfcs_done(union ctl_io *io) 510 { 511 union ccb *ccb; 512 struct cfcs_softc *softc; 513 struct cam_sim *sim; 514 515 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 516 517 sim = xpt_path_sim(ccb->ccb_h.path); 518 softc = (struct cfcs_softc *)cam_sim_softc(sim); 519 520 /* 521 * At this point we should have status. If we don't, that's a bug. 522 */ 523 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 524 ("invalid CTL status %#x", io->io_hdr.status)); 525 526 /* 527 * Translate CTL status to CAM status. 528 */ 529 switch (io->io_hdr.status & CTL_STATUS_MASK) { 530 case CTL_SUCCESS: 531 ccb->ccb_h.status = CAM_REQ_CMP; 532 break; 533 case CTL_SCSI_ERROR: 534 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 535 ccb->csio.scsi_status = io->scsiio.scsi_status; 536 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 537 min(io->scsiio.sense_len, ccb->csio.sense_len)); 538 if (ccb->csio.sense_len > io->scsiio.sense_len) 539 ccb->csio.sense_resid = ccb->csio.sense_len - 540 io->scsiio.sense_len; 541 else 542 ccb->csio.sense_resid = 0; 543 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 544 cfcs_max_sense) { 545 ccb->csio.sense_resid = ccb->csio.sense_len - 546 cfcs_max_sense; 547 } 548 break; 549 case CTL_CMD_ABORTED: 550 ccb->ccb_h.status = CAM_REQ_ABORTED; 551 break; 552 case CTL_ERROR: 553 default: 554 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 555 break; 556 } 557 558 mtx_lock(sim->mtx); 559 xpt_done(ccb); 560 mtx_unlock(sim->mtx); 561 562 ctl_free_io(io); 563 } 564 565 void 566 cfcs_action(struct cam_sim *sim, union ccb *ccb) 567 { 568 struct cfcs_softc *softc; 569 int err; 570 571 softc = (struct cfcs_softc *)cam_sim_softc(sim); 572 mtx_assert(&softc->lock, MA_OWNED); 573 574 switch (ccb->ccb_h.func_code) { 575 case XPT_SCSI_IO: { 576 union ctl_io *io; 577 struct ccb_scsiio *csio; 578 579 csio = &ccb->csio; 580 581 /* 582 * Catch CCB flags, like physical address flags, that 583 * indicate situations we currently can't handle. 584 */ 585 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 586 ccb->ccb_h.status = CAM_REQ_INVALID; 587 printf("%s: bad CCB flags %#x (all flags %#x)\n", 588 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 589 ccb->ccb_h.flags); 590 xpt_done(ccb); 591 return; 592 } 593 594 /* 595 * If we aren't online, there are no devices to see. 596 */ 597 if (softc->online == 0) { 598 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 599 xpt_done(ccb); 600 return; 601 } 602 603 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 604 if (io == NULL) { 605 printf("%s: can't allocate ctl_io\n", __func__); 606 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 607 xpt_freeze_devq(ccb->ccb_h.path, 1); 608 xpt_done(ccb); 609 return; 610 } 611 ctl_zero_io(io); 612 /* Save pointers on both sides */ 613 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 614 ccb->ccb_h.io_ptr = io; 615 616 /* 617 * Only SCSI I/O comes down this path, resets, etc. come 618 * down via the XPT_RESET_BUS/LUN CCBs below. 619 */ 620 io->io_hdr.io_type = CTL_IO_SCSI; 621 io->io_hdr.nexus.initid.id = 1; 622 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 623 /* 624 * XXX KDM how do we handle target IDs? 625 */ 626 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 627 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 628 /* 629 * This tag scheme isn't the best, since we could in theory 630 * have a very long-lived I/O and tag collision, especially 631 * in a high I/O environment. But it should work well 632 * enough for now. Since we're using unsigned ints, 633 * they'll just wrap around. 634 */ 635 io->scsiio.tag_num = softc->cur_tag_num++; 636 csio->tag_id = io->scsiio.tag_num; 637 switch (csio->tag_action) { 638 case CAM_TAG_ACTION_NONE: 639 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 640 break; 641 case MSG_SIMPLE_TASK: 642 io->scsiio.tag_type = CTL_TAG_SIMPLE; 643 break; 644 case MSG_HEAD_OF_QUEUE_TASK: 645 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 646 break; 647 case MSG_ORDERED_TASK: 648 io->scsiio.tag_type = CTL_TAG_ORDERED; 649 break; 650 case MSG_ACA_TASK: 651 io->scsiio.tag_type = CTL_TAG_ACA; 652 break; 653 default: 654 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 655 printf("%s: unhandled tag type %#x!!\n", __func__, 656 csio->tag_action); 657 break; 658 } 659 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 660 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 661 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 662 } 663 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 664 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 665 io->scsiio.cdb_len); 666 667 err = ctl_queue(io); 668 if (err != CTL_RETVAL_COMPLETE) { 669 printf("%s: func %d: error %d returned by " 670 "ctl_queue()!\n", __func__, 671 ccb->ccb_h.func_code, err); 672 ctl_free_io(io); 673 } else { 674 ccb->ccb_h.status |= CAM_SIM_QUEUED; 675 } 676 break; 677 } 678 case XPT_ABORT: { 679 union ctl_io *io; 680 union ccb *abort_ccb; 681 682 abort_ccb = ccb->cab.abort_ccb; 683 684 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 685 ccb->ccb_h.status = CAM_REQ_INVALID; 686 xpt_done(ccb); 687 } 688 689 /* 690 * If we aren't online, there are no devices to talk to. 691 */ 692 if (softc->online == 0) { 693 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 694 xpt_done(ccb); 695 return; 696 } 697 698 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 699 if (io == NULL) { 700 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 701 xpt_freeze_devq(ccb->ccb_h.path, 1); 702 xpt_done(ccb); 703 return; 704 } 705 706 ctl_zero_io(io); 707 /* Save pointers on both sides */ 708 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 709 ccb->ccb_h.io_ptr = io; 710 711 io->io_hdr.io_type = CTL_IO_TASK; 712 io->io_hdr.nexus.initid.id = 1; 713 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 714 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 715 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 716 io->taskio.task_action = CTL_TASK_ABORT_TASK; 717 io->taskio.tag_num = abort_ccb->csio.tag_id; 718 switch (abort_ccb->csio.tag_action) { 719 case CAM_TAG_ACTION_NONE: 720 io->taskio.tag_type = CTL_TAG_UNTAGGED; 721 break; 722 case MSG_SIMPLE_TASK: 723 io->taskio.tag_type = CTL_TAG_SIMPLE; 724 break; 725 case MSG_HEAD_OF_QUEUE_TASK: 726 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 727 break; 728 case MSG_ORDERED_TASK: 729 io->taskio.tag_type = CTL_TAG_ORDERED; 730 break; 731 case MSG_ACA_TASK: 732 io->taskio.tag_type = CTL_TAG_ACA; 733 break; 734 default: 735 io->taskio.tag_type = CTL_TAG_UNTAGGED; 736 printf("%s: unhandled tag type %#x!!\n", __func__, 737 abort_ccb->csio.tag_action); 738 break; 739 } 740 err = ctl_queue(io); 741 if (err != CTL_RETVAL_COMPLETE) { 742 printf("%s func %d: error %d returned by " 743 "ctl_queue()!\n", __func__, 744 ccb->ccb_h.func_code, err); 745 ctl_free_io(io); 746 } 747 break; 748 } 749 case XPT_GET_TRAN_SETTINGS: { 750 struct ccb_trans_settings *cts; 751 struct ccb_trans_settings_scsi *scsi; 752 struct ccb_trans_settings_fc *fc; 753 754 cts = &ccb->cts; 755 scsi = &cts->proto_specific.scsi; 756 fc = &cts->xport_specific.fc; 757 758 759 cts->protocol = PROTO_SCSI; 760 cts->protocol_version = SCSI_REV_SPC2; 761 cts->transport = XPORT_FC; 762 cts->transport_version = 0; 763 764 scsi->valid = CTS_SCSI_VALID_TQ; 765 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 766 fc->valid = CTS_FC_VALID_SPEED; 767 fc->bitrate = 800000; 768 fc->wwnn = softc->wwnn; 769 fc->wwpn = softc->wwpn; 770 fc->port = softc->fe.targ_port; 771 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 772 CTS_FC_VALID_PORT; 773 ccb->ccb_h.status = CAM_REQ_CMP; 774 break; 775 } 776 case XPT_SET_TRAN_SETTINGS: 777 /* XXX KDM should we actually do something here? */ 778 ccb->ccb_h.status = CAM_REQ_CMP; 779 break; 780 case XPT_RESET_BUS: 781 case XPT_RESET_DEV: { 782 union ctl_io *io; 783 784 /* 785 * If we aren't online, there are no devices to talk to. 786 */ 787 if (softc->online == 0) { 788 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 789 xpt_done(ccb); 790 return; 791 } 792 793 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 794 if (io == NULL) { 795 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 796 xpt_freeze_devq(ccb->ccb_h.path, 1); 797 xpt_done(ccb); 798 return; 799 } 800 801 ctl_zero_io(io); 802 /* Save pointers on both sides */ 803 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 804 ccb->ccb_h.io_ptr = io; 805 806 io->io_hdr.io_type = CTL_IO_TASK; 807 io->io_hdr.nexus.initid.id = 0; 808 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 809 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 810 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 811 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 812 io->taskio.task_action = CTL_TASK_BUS_RESET; 813 else 814 io->taskio.task_action = CTL_TASK_LUN_RESET; 815 816 err = ctl_queue(io); 817 if (err != CTL_RETVAL_COMPLETE) { 818 printf("%s func %d: error %d returned by " 819 "ctl_queue()!\n", __func__, 820 ccb->ccb_h.func_code, err); 821 ctl_free_io(io); 822 } 823 break; 824 } 825 case XPT_CALC_GEOMETRY: 826 cam_calc_geometry(&ccb->ccg, 1); 827 xpt_done(ccb); 828 break; 829 case XPT_PATH_INQ: { 830 struct ccb_pathinq *cpi; 831 832 cpi = &ccb->cpi; 833 834 cpi->version_num = 0; 835 cpi->hba_inquiry = PI_TAG_ABLE; 836 cpi->target_sprt = 0; 837 cpi->hba_misc = 0; 838 cpi->hba_eng_cnt = 0; 839 cpi->max_target = 1; 840 cpi->max_lun = 1024; 841 /* Do we really have a limit? */ 842 cpi->maxio = 1024 * 1024; 843 cpi->async_flags = 0; 844 cpi->hpath_id = 0; 845 cpi->initiator_id = 0; 846 847 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 848 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 849 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 850 cpi->unit_number = 0; 851 cpi->bus_id = 0; 852 cpi->base_transfer_speed = 800000; 853 cpi->protocol = PROTO_SCSI; 854 cpi->protocol_version = SCSI_REV_SPC2; 855 /* 856 * Pretend to be Fibre Channel. 857 */ 858 cpi->transport = XPORT_FC; 859 cpi->transport_version = 0; 860 cpi->xport_specific.fc.wwnn = softc->wwnn; 861 cpi->xport_specific.fc.wwpn = softc->wwpn; 862 cpi->xport_specific.fc.port = softc->fe.targ_port; 863 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 864 cpi->ccb_h.status = CAM_REQ_CMP; 865 break; 866 } 867 default: 868 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 869 printf("%s: unsupported CCB type %#x\n", __func__, 870 ccb->ccb_h.func_code); 871 xpt_done(ccb); 872 break; 873 } 874 } 875 876 static void 877 cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 878 { 879 880 } 881