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_PHYS | CAM_SG_LIST_PHYS | \ 97 CAM_MSG_BUF_PHYS | 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 SYSINIT(cfcs_init, SI_SUB_CONFIGURE, SI_ORDER_FOURTH, cfcs_init, NULL); 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"); 128 129 130 int 131 cfcs_init(void) 132 { 133 struct cfcs_softc *softc; 134 struct ccb_setasync csa; 135 struct ctl_frontend *fe; 136 #ifdef NEEDTOPORT 137 char wwnn[8]; 138 #endif 139 int retval; 140 141 softc = &cfcs_softc; 142 retval = 0; 143 bzero(softc, sizeof(*softc)); 144 sprintf(softc->lock_desc, "ctl2cam"); 145 mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF); 146 fe = &softc->fe; 147 148 fe->port_type = CTL_PORT_INTERNAL; 149 /* XXX KDM what should the real number be here? */ 150 fe->num_requested_ctl_io = 4096; 151 snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam"); 152 fe->port_name = softc->port_name; 153 fe->port_online = cfcs_online; 154 fe->port_offline = cfcs_offline; 155 fe->onoff_arg = softc; 156 fe->targ_enable = cfcs_targ_enable; 157 fe->targ_disable = cfcs_targ_disable; 158 fe->lun_enable = cfcs_lun_enable; 159 fe->lun_disable = cfcs_lun_disable; 160 fe->targ_lun_arg = softc; 161 fe->fe_datamove = cfcs_datamove; 162 fe->fe_done = cfcs_done; 163 164 /* XXX KDM what should we report here? */ 165 /* XXX These should probably be fetched from CTL. */ 166 fe->max_targets = 1; 167 fe->max_target_id = 15; 168 169 retval = ctl_frontend_register(fe, /*master_SC*/ 1); 170 if (retval != 0) { 171 printf("%s: ctl_frontend_register() failed with error %d!\n", 172 __func__, retval); 173 retval = 1; 174 goto bailout; 175 } 176 177 /* 178 * Get the WWNN out of the database, and create a WWPN as well. 179 */ 180 #ifdef NEEDTOPORT 181 ddb_GetWWNN((char *)wwnn); 182 softc->wwnn = be64dec(wwnn); 183 softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff); 184 #endif 185 186 /* 187 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 188 * ahead and set something random. 189 */ 190 if (fe->wwnn == 0) { 191 uint64_t random_bits; 192 193 arc4rand(&random_bits, sizeof(random_bits), 0); 194 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 195 /* Company ID */ 0x5000000000000000ULL | 196 /* NL-Port */ 0x0300; 197 softc->wwpn = softc->wwnn + fe->targ_port + 1; 198 fe->wwnn = softc->wwnn; 199 fe->wwpn = softc->wwpn; 200 } else { 201 softc->wwnn = fe->wwnn; 202 softc->wwpn = fe->wwpn; 203 } 204 205 206 softc->devq = cam_simq_alloc(fe->num_requested_ctl_io); 207 if (softc->devq == NULL) { 208 printf("%s: error allocating devq\n", __func__); 209 retval = ENOMEM; 210 goto bailout; 211 } 212 213 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 214 softc, /*unit*/ 0, &softc->lock, 1, 215 fe->num_requested_ctl_io, softc->devq); 216 if (softc->sim == NULL) { 217 printf("%s: error allocating SIM\n", __func__); 218 retval = ENOMEM; 219 goto bailout; 220 } 221 222 mtx_lock(&softc->lock); 223 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 224 printf("%s: error registering SIM\n", __func__); 225 retval = ENOMEM; 226 goto bailout; 227 } 228 229 if (xpt_create_path(&softc->path, /*periph*/NULL, 230 cam_sim_path(softc->sim), 231 CAM_TARGET_WILDCARD, 232 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 233 printf("%s: error creating path\n", __func__); 234 xpt_bus_deregister(cam_sim_path(softc->sim)); 235 retval = 1; 236 goto bailout; 237 } 238 239 mtx_unlock(&softc->lock); 240 241 xpt_setup_ccb(&csa.ccb_h, softc->path, /*priority*/ 5); 242 csa.ccb_h.func_code = XPT_SASYNC_CB; 243 csa.event_enable = AC_LOST_DEVICE; 244 csa.callback = cfcs_async; 245 csa.callback_arg = softc->sim; 246 xpt_action((union ccb *)&csa); 247 248 return (retval); 249 250 bailout: 251 if (softc->sim) 252 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 253 else if (softc->devq) 254 cam_simq_free(softc->devq); 255 256 mtx_unlock(&softc->lock); 257 258 return (retval); 259 } 260 261 static void 262 cfcs_poll(struct cam_sim *sim) 263 { 264 265 } 266 267 void 268 cfcs_shutdown(void) 269 { 270 271 } 272 273 static void 274 cfcs_online(void *arg) 275 { 276 struct cfcs_softc *softc; 277 union ccb *ccb; 278 279 softc = (struct cfcs_softc *)arg; 280 281 mtx_lock(&softc->lock); 282 softc->online = 1; 283 mtx_unlock(&softc->lock); 284 285 ccb = xpt_alloc_ccb_nowait(); 286 if (ccb == NULL) { 287 printf("%s: unable to allocate CCB for rescan\n", __func__); 288 return; 289 } 290 291 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 292 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 293 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 294 printf("%s: can't allocate path for rescan\n", __func__); 295 xpt_free_ccb(ccb); 296 return; 297 } 298 xpt_rescan(ccb); 299 } 300 301 static void 302 cfcs_offline(void *arg) 303 { 304 struct cfcs_softc *softc; 305 union ccb *ccb; 306 307 softc = (struct cfcs_softc *)arg; 308 309 mtx_lock(&softc->lock); 310 softc->online = 0; 311 mtx_unlock(&softc->lock); 312 313 ccb = xpt_alloc_ccb_nowait(); 314 if (ccb == NULL) { 315 printf("%s: unable to allocate CCB for rescan\n", __func__); 316 return; 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 return; 325 } 326 xpt_rescan(ccb); 327 } 328 329 static int 330 cfcs_targ_enable(void *arg, struct ctl_id targ_id) 331 { 332 return (0); 333 } 334 335 static int 336 cfcs_targ_disable(void *arg, struct ctl_id targ_id) 337 { 338 return (0); 339 } 340 341 static int 342 cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 343 { 344 return (0); 345 } 346 static int 347 cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 348 { 349 return (0); 350 } 351 352 /* 353 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 354 * way to combine the functionality? 355 * 356 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 357 * caller's context, which will usually be the backend. That may not be a 358 * good thing. 359 */ 360 static void 361 cfcs_datamove(union ctl_io *io) 362 { 363 union ccb *ccb; 364 bus_dma_segment_t cam_sg_entry, *cam_sglist; 365 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 366 int cam_sg_count, ctl_sg_count, cam_sg_start; 367 int cam_sg_offset; 368 int len_to_copy, len_copied; 369 int ctl_watermark, cam_watermark; 370 int i, j; 371 372 373 cam_sg_offset = 0; 374 cam_sg_start = 0; 375 376 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 377 378 /* 379 * Note that we have a check in cfcs_action() to make sure that any 380 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 381 * is just to make sure no one removes that check without updating 382 * this code to provide the additional functionality necessary to 383 * support those modes of operation. 384 */ 385 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 386 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 387 388 /* 389 * Simplify things on both sides by putting single buffers into a 390 * single entry S/G list. 391 */ 392 if (ccb->ccb_h.flags & CAM_SCATTER_VALID) { 393 if (ccb->ccb_h.flags & CAM_SG_LIST_PHYS) { 394 /* We should filter this out on entry */ 395 panic("%s: physical S/G list, should not get here", 396 __func__); 397 } else { 398 int len_seen; 399 400 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 401 cam_sg_count = ccb->csio.sglist_cnt; 402 403 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 404 if ((len_seen + cam_sglist[i].ds_len) >= 405 io->scsiio.kern_rel_offset) { 406 cam_sg_start = i; 407 cam_sg_offset = 408 io->scsiio.kern_rel_offset - 409 len_seen; 410 break; 411 } 412 len_seen += cam_sglist[i].ds_len; 413 } 414 } 415 } else { 416 cam_sglist = &cam_sg_entry; 417 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 418 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 419 cam_sg_count = 1; 420 cam_sg_start = 0; 421 cam_sg_offset = io->scsiio.kern_rel_offset; 422 } 423 424 if (io->scsiio.kern_sg_entries > 0) { 425 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 426 ctl_sg_count = io->scsiio.kern_sg_entries; 427 } else { 428 ctl_sglist = &ctl_sg_entry; 429 ctl_sglist->addr = io->scsiio.kern_data_ptr; 430 ctl_sglist->len = io->scsiio.kern_data_len; 431 ctl_sg_count = 1; 432 } 433 434 ctl_watermark = 0; 435 cam_watermark = cam_sg_offset; 436 len_copied = 0; 437 for (i = cam_sg_start, j = 0; 438 i < cam_sg_count && j < ctl_sg_count;) { 439 uint8_t *cam_ptr, *ctl_ptr; 440 441 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 442 ctl_sglist[j].len - ctl_watermark); 443 444 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 445 cam_ptr = cam_ptr + cam_watermark; 446 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 447 /* 448 * XXX KDM fix this! 449 */ 450 panic("need to implement bus address support"); 451 #if 0 452 kern_ptr = bus_to_virt(kern_sglist[j].addr); 453 #endif 454 } else 455 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 456 ctl_ptr = ctl_ptr + ctl_watermark; 457 458 ctl_watermark += len_to_copy; 459 cam_watermark += len_to_copy; 460 461 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 462 CTL_FLAG_DATA_IN) { 463 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 464 __func__, len_to_copy)); 465 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 466 __func__, cam_ptr)); 467 bcopy(ctl_ptr, cam_ptr, len_to_copy); 468 } else { 469 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 470 __func__, len_to_copy)); 471 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 472 __func__, ctl_ptr)); 473 bcopy(cam_ptr, ctl_ptr, len_to_copy); 474 } 475 476 len_copied += len_to_copy; 477 478 if (cam_sglist[i].ds_len == cam_watermark) { 479 i++; 480 cam_watermark = 0; 481 } 482 483 if (ctl_sglist[j].len == ctl_watermark) { 484 j++; 485 ctl_watermark = 0; 486 } 487 } 488 489 io->scsiio.ext_data_filled += len_copied; 490 491 io->scsiio.be_move_done(io); 492 } 493 494 static void 495 cfcs_done(union ctl_io *io) 496 { 497 union ccb *ccb; 498 struct cfcs_softc *softc; 499 struct cam_sim *sim; 500 501 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 502 503 sim = xpt_path_sim(ccb->ccb_h.path); 504 softc = (struct cfcs_softc *)cam_sim_softc(sim); 505 506 /* 507 * At this point we should have status. If we don't, that's a bug. 508 */ 509 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 510 ("invalid CTL status %#x", io->io_hdr.status)); 511 512 /* 513 * Translate CTL status to CAM status. 514 */ 515 switch (io->io_hdr.status & CTL_STATUS_MASK) { 516 case CTL_SUCCESS: 517 ccb->ccb_h.status = CAM_REQ_CMP; 518 break; 519 case CTL_SCSI_ERROR: 520 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 521 ccb->csio.scsi_status = io->scsiio.scsi_status; 522 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 523 min(io->scsiio.sense_len, ccb->csio.sense_len)); 524 if (ccb->csio.sense_len > io->scsiio.sense_len) 525 ccb->csio.sense_resid = ccb->csio.sense_len - 526 io->scsiio.sense_len; 527 else 528 ccb->csio.sense_resid = 0; 529 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 530 cfcs_max_sense) { 531 ccb->csio.sense_resid = ccb->csio.sense_len - 532 cfcs_max_sense; 533 } 534 break; 535 case CTL_CMD_ABORTED: 536 ccb->ccb_h.status = CAM_REQ_ABORTED; 537 break; 538 case CTL_ERROR: 539 default: 540 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 541 break; 542 } 543 544 mtx_lock(sim->mtx); 545 xpt_done(ccb); 546 mtx_unlock(sim->mtx); 547 548 ctl_free_io(io); 549 } 550 551 void 552 cfcs_action(struct cam_sim *sim, union ccb *ccb) 553 { 554 struct cfcs_softc *softc; 555 int err; 556 557 softc = (struct cfcs_softc *)cam_sim_softc(sim); 558 mtx_assert(&softc->lock, MA_OWNED); 559 560 switch (ccb->ccb_h.func_code) { 561 case XPT_SCSI_IO: { 562 union ctl_io *io; 563 struct ccb_scsiio *csio; 564 565 csio = &ccb->csio; 566 567 /* 568 * Catch CCB flags, like physical address flags, that 569 * indicate situations we currently can't handle. 570 */ 571 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 572 ccb->ccb_h.status = CAM_REQ_INVALID; 573 printf("%s: bad CCB flags %#x (all flags %#x)\n", 574 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 575 ccb->ccb_h.flags); 576 xpt_done(ccb); 577 return; 578 } 579 580 /* 581 * If we aren't online, there are no devices to see. 582 */ 583 if (softc->online == 0) { 584 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 585 xpt_done(ccb); 586 return; 587 } 588 589 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 590 if (io == NULL) { 591 printf("%s: can't allocate ctl_io\n", __func__); 592 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 593 xpt_freeze_devq(ccb->ccb_h.path, 1); 594 xpt_done(ccb); 595 return; 596 } 597 ctl_zero_io(io); 598 /* Save pointers on both sides */ 599 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 600 ccb->ccb_h.io_ptr = io; 601 602 /* 603 * Only SCSI I/O comes down this path, resets, etc. come 604 * down via the XPT_RESET_BUS/LUN CCBs below. 605 */ 606 io->io_hdr.io_type = CTL_IO_SCSI; 607 io->io_hdr.nexus.initid.id = 1; 608 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 609 /* 610 * XXX KDM how do we handle target IDs? 611 */ 612 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 613 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 614 /* 615 * This tag scheme isn't the best, since we could in theory 616 * have a very long-lived I/O and tag collision, especially 617 * in a high I/O environment. But it should work well 618 * enough for now. Since we're using unsigned ints, 619 * they'll just wrap around. 620 */ 621 io->scsiio.tag_num = softc->cur_tag_num++; 622 csio->tag_id = io->scsiio.tag_num; 623 switch (csio->tag_action) { 624 case CAM_TAG_ACTION_NONE: 625 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 626 break; 627 case MSG_SIMPLE_TASK: 628 io->scsiio.tag_type = CTL_TAG_SIMPLE; 629 break; 630 case MSG_HEAD_OF_QUEUE_TASK: 631 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 632 break; 633 case MSG_ORDERED_TASK: 634 io->scsiio.tag_type = CTL_TAG_ORDERED; 635 break; 636 case MSG_ACA_TASK: 637 io->scsiio.tag_type = CTL_TAG_ACA; 638 break; 639 default: 640 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 641 printf("%s: unhandled tag type %#x!!\n", __func__, 642 csio->tag_action); 643 break; 644 } 645 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 646 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 647 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 648 } 649 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 650 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 651 io->scsiio.cdb_len); 652 653 err = ctl_queue(io); 654 if (err != CTL_RETVAL_COMPLETE) { 655 printf("%s: func %d: error %d returned by " 656 "ctl_queue()!\n", __func__, 657 ccb->ccb_h.func_code, err); 658 ctl_free_io(io); 659 } else { 660 ccb->ccb_h.status |= CAM_SIM_QUEUED; 661 } 662 break; 663 } 664 case XPT_ABORT: { 665 union ctl_io *io; 666 union ccb *abort_ccb; 667 668 abort_ccb = ccb->cab.abort_ccb; 669 670 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 671 ccb->ccb_h.status = CAM_REQ_INVALID; 672 xpt_done(ccb); 673 } 674 675 /* 676 * If we aren't online, there are no devices to talk to. 677 */ 678 if (softc->online == 0) { 679 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 680 xpt_done(ccb); 681 return; 682 } 683 684 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 685 if (io == NULL) { 686 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 687 xpt_freeze_devq(ccb->ccb_h.path, 1); 688 xpt_done(ccb); 689 return; 690 } 691 692 ctl_zero_io(io); 693 /* Save pointers on both sides */ 694 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 695 ccb->ccb_h.io_ptr = io; 696 697 io->io_hdr.io_type = CTL_IO_TASK; 698 io->io_hdr.nexus.initid.id = 1; 699 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 700 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 701 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 702 io->taskio.task_action = CTL_TASK_ABORT_TASK; 703 io->taskio.tag_num = abort_ccb->csio.tag_id; 704 switch (abort_ccb->csio.tag_action) { 705 case CAM_TAG_ACTION_NONE: 706 io->taskio.tag_type = CTL_TAG_UNTAGGED; 707 break; 708 case MSG_SIMPLE_TASK: 709 io->taskio.tag_type = CTL_TAG_SIMPLE; 710 break; 711 case MSG_HEAD_OF_QUEUE_TASK: 712 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 713 break; 714 case MSG_ORDERED_TASK: 715 io->taskio.tag_type = CTL_TAG_ORDERED; 716 break; 717 case MSG_ACA_TASK: 718 io->taskio.tag_type = CTL_TAG_ACA; 719 break; 720 default: 721 io->taskio.tag_type = CTL_TAG_UNTAGGED; 722 printf("%s: unhandled tag type %#x!!\n", __func__, 723 abort_ccb->csio.tag_action); 724 break; 725 } 726 err = ctl_queue(io); 727 if (err != CTL_RETVAL_COMPLETE) { 728 printf("%s func %d: error %d returned by " 729 "ctl_queue()!\n", __func__, 730 ccb->ccb_h.func_code, err); 731 ctl_free_io(io); 732 } 733 break; 734 } 735 case XPT_GET_TRAN_SETTINGS: { 736 struct ccb_trans_settings *cts; 737 struct ccb_trans_settings_scsi *scsi; 738 struct ccb_trans_settings_fc *fc; 739 740 cts = &ccb->cts; 741 scsi = &cts->proto_specific.scsi; 742 fc = &cts->xport_specific.fc; 743 744 745 cts->protocol = PROTO_SCSI; 746 cts->protocol_version = SCSI_REV_SPC2; 747 cts->transport = XPORT_FC; 748 cts->transport_version = 0; 749 750 scsi->valid = CTS_SCSI_VALID_TQ; 751 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 752 fc->valid = CTS_FC_VALID_SPEED; 753 fc->bitrate = 800000; 754 fc->wwnn = softc->wwnn; 755 fc->wwpn = softc->wwpn; 756 fc->port = softc->fe.targ_port; 757 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 758 CTS_FC_VALID_PORT; 759 ccb->ccb_h.status = CAM_REQ_CMP; 760 break; 761 } 762 case XPT_SET_TRAN_SETTINGS: 763 /* XXX KDM should we actually do something here? */ 764 ccb->ccb_h.status = CAM_REQ_CMP; 765 break; 766 case XPT_RESET_BUS: 767 case XPT_RESET_DEV: { 768 union ctl_io *io; 769 770 /* 771 * If we aren't online, there are no devices to talk to. 772 */ 773 if (softc->online == 0) { 774 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 775 xpt_done(ccb); 776 return; 777 } 778 779 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 780 if (io == NULL) { 781 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 782 xpt_freeze_devq(ccb->ccb_h.path, 1); 783 xpt_done(ccb); 784 return; 785 } 786 787 ctl_zero_io(io); 788 /* Save pointers on both sides */ 789 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 790 ccb->ccb_h.io_ptr = io; 791 792 io->io_hdr.io_type = CTL_IO_TASK; 793 io->io_hdr.nexus.initid.id = 0; 794 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 795 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 796 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 797 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 798 io->taskio.task_action = CTL_TASK_BUS_RESET; 799 else 800 io->taskio.task_action = CTL_TASK_LUN_RESET; 801 802 err = ctl_queue(io); 803 if (err != CTL_RETVAL_COMPLETE) { 804 printf("%s func %d: error %d returned by " 805 "ctl_queue()!\n", __func__, 806 ccb->ccb_h.func_code, err); 807 ctl_free_io(io); 808 } 809 break; 810 } 811 case XPT_CALC_GEOMETRY: 812 cam_calc_geometry(&ccb->ccg, 1); 813 xpt_done(ccb); 814 break; 815 case XPT_PATH_INQ: { 816 struct ccb_pathinq *cpi; 817 818 cpi = &ccb->cpi; 819 820 cpi->version_num = 0; 821 cpi->hba_inquiry = PI_TAG_ABLE; 822 cpi->target_sprt = 0; 823 cpi->hba_misc = 0; 824 cpi->hba_eng_cnt = 0; 825 cpi->max_target = 1; 826 cpi->max_lun = 1024; 827 /* Do we really have a limit? */ 828 cpi->maxio = 1024 * 1024; 829 cpi->async_flags = 0; 830 cpi->hpath_id = 0; 831 cpi->initiator_id = 0; 832 833 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 834 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 835 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 836 cpi->unit_number = 0; 837 cpi->bus_id = 0; 838 cpi->base_transfer_speed = 800000; 839 cpi->protocol = PROTO_SCSI; 840 cpi->protocol_version = SCSI_REV_SPC2; 841 /* 842 * Pretend to be Fibre Channel. 843 */ 844 cpi->transport = XPORT_FC; 845 cpi->transport_version = 0; 846 cpi->xport_specific.fc.wwnn = softc->wwnn; 847 cpi->xport_specific.fc.wwpn = softc->wwpn; 848 cpi->xport_specific.fc.port = softc->fe.targ_port; 849 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 850 cpi->ccb_h.status = CAM_REQ_CMP; 851 break; 852 } 853 default: 854 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 855 printf("%s: unsupported CCB type %#x\n", __func__, 856 ccb->ccb_h.func_code); 857 xpt_done(ccb); 858 break; 859 } 860 } 861 862 static void 863 cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 864 { 865 866 } 867