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 extern int ctl_disable; 123 124 SYSINIT(cfcs_init, SI_SUB_CONFIGURE, SI_ORDER_FOURTH, cfcs_init, NULL); 125 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 126 "CAM Target Layer SIM frontend"); 127 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 128 &cfcs_max_sense, 0, "Maximum sense data size"); 129 130 131 int 132 cfcs_init(void) 133 { 134 struct cfcs_softc *softc; 135 struct ccb_setasync csa; 136 struct ctl_frontend *fe; 137 #ifdef NEEDTOPORT 138 char wwnn[8]; 139 #endif 140 int retval; 141 142 /* Don't continue if CTL is disabled */ 143 if (ctl_disable != 0) 144 return (0); 145 146 softc = &cfcs_softc; 147 retval = 0; 148 bzero(softc, sizeof(*softc)); 149 sprintf(softc->lock_desc, "ctl2cam"); 150 mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF); 151 fe = &softc->fe; 152 153 fe->port_type = CTL_PORT_INTERNAL; 154 /* XXX KDM what should the real number be here? */ 155 fe->num_requested_ctl_io = 4096; 156 snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam"); 157 fe->port_name = softc->port_name; 158 fe->port_online = cfcs_online; 159 fe->port_offline = cfcs_offline; 160 fe->onoff_arg = softc; 161 fe->targ_enable = cfcs_targ_enable; 162 fe->targ_disable = cfcs_targ_disable; 163 fe->lun_enable = cfcs_lun_enable; 164 fe->lun_disable = cfcs_lun_disable; 165 fe->targ_lun_arg = softc; 166 fe->fe_datamove = cfcs_datamove; 167 fe->fe_done = cfcs_done; 168 169 /* XXX KDM what should we report here? */ 170 /* XXX These should probably be fetched from CTL. */ 171 fe->max_targets = 1; 172 fe->max_target_id = 15; 173 174 retval = ctl_frontend_register(fe, /*master_SC*/ 1); 175 if (retval != 0) { 176 printf("%s: ctl_frontend_register() failed with error %d!\n", 177 __func__, retval); 178 mtx_destroy(&softc->lock); 179 return (1); 180 } 181 182 /* 183 * Get the WWNN out of the database, and create a WWPN as well. 184 */ 185 #ifdef NEEDTOPORT 186 ddb_GetWWNN((char *)wwnn); 187 softc->wwnn = be64dec(wwnn); 188 softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff); 189 #endif 190 191 /* 192 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 193 * ahead and set something random. 194 */ 195 if (fe->wwnn == 0) { 196 uint64_t random_bits; 197 198 arc4rand(&random_bits, sizeof(random_bits), 0); 199 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 200 /* Company ID */ 0x5000000000000000ULL | 201 /* NL-Port */ 0x0300; 202 softc->wwpn = softc->wwnn + fe->targ_port + 1; 203 fe->wwnn = softc->wwnn; 204 fe->wwpn = softc->wwpn; 205 } else { 206 softc->wwnn = fe->wwnn; 207 softc->wwpn = fe->wwpn; 208 } 209 210 mtx_lock(&softc->lock); 211 softc->devq = cam_simq_alloc(fe->num_requested_ctl_io); 212 if (softc->devq == NULL) { 213 printf("%s: error allocating devq\n", __func__); 214 retval = ENOMEM; 215 goto bailout; 216 } 217 218 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 219 softc, /*unit*/ 0, &softc->lock, 1, 220 fe->num_requested_ctl_io, softc->devq); 221 if (softc->sim == NULL) { 222 printf("%s: error allocating SIM\n", __func__); 223 retval = ENOMEM; 224 goto bailout; 225 } 226 227 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 228 printf("%s: error registering SIM\n", __func__); 229 retval = ENOMEM; 230 goto bailout; 231 } 232 233 if (xpt_create_path(&softc->path, /*periph*/NULL, 234 cam_sim_path(softc->sim), 235 CAM_TARGET_WILDCARD, 236 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 237 printf("%s: error creating path\n", __func__); 238 xpt_bus_deregister(cam_sim_path(softc->sim)); 239 retval = 1; 240 goto bailout; 241 } 242 243 xpt_setup_ccb(&csa.ccb_h, softc->path, /*priority*/ 5); 244 csa.ccb_h.func_code = XPT_SASYNC_CB; 245 csa.event_enable = AC_LOST_DEVICE; 246 csa.callback = cfcs_async; 247 csa.callback_arg = softc->sim; 248 xpt_action((union ccb *)&csa); 249 250 mtx_unlock(&softc->lock); 251 252 return (retval); 253 254 bailout: 255 if (softc->sim) 256 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 257 else if (softc->devq) 258 cam_simq_free(softc->devq); 259 mtx_unlock(&softc->lock); 260 mtx_destroy(&softc->lock); 261 262 return (retval); 263 } 264 265 static void 266 cfcs_poll(struct cam_sim *sim) 267 { 268 269 } 270 271 void 272 cfcs_shutdown(void) 273 { 274 275 } 276 277 static void 278 cfcs_online(void *arg) 279 { 280 struct cfcs_softc *softc; 281 union ccb *ccb; 282 283 softc = (struct cfcs_softc *)arg; 284 285 mtx_lock(&softc->lock); 286 softc->online = 1; 287 mtx_unlock(&softc->lock); 288 289 ccb = xpt_alloc_ccb_nowait(); 290 if (ccb == NULL) { 291 printf("%s: unable to allocate CCB for rescan\n", __func__); 292 return; 293 } 294 295 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 296 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 297 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 298 printf("%s: can't allocate path for rescan\n", __func__); 299 xpt_free_ccb(ccb); 300 return; 301 } 302 xpt_rescan(ccb); 303 } 304 305 static void 306 cfcs_offline(void *arg) 307 { 308 struct cfcs_softc *softc; 309 union ccb *ccb; 310 311 softc = (struct cfcs_softc *)arg; 312 313 mtx_lock(&softc->lock); 314 softc->online = 0; 315 mtx_unlock(&softc->lock); 316 317 ccb = xpt_alloc_ccb_nowait(); 318 if (ccb == NULL) { 319 printf("%s: unable to allocate CCB for rescan\n", __func__); 320 return; 321 } 322 323 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 324 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 325 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 326 printf("%s: can't allocate path for rescan\n", __func__); 327 xpt_free_ccb(ccb); 328 return; 329 } 330 xpt_rescan(ccb); 331 } 332 333 static int 334 cfcs_targ_enable(void *arg, struct ctl_id targ_id) 335 { 336 return (0); 337 } 338 339 static int 340 cfcs_targ_disable(void *arg, struct ctl_id targ_id) 341 { 342 return (0); 343 } 344 345 static int 346 cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 347 { 348 return (0); 349 } 350 static int 351 cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 352 { 353 return (0); 354 } 355 356 /* 357 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 358 * way to combine the functionality? 359 * 360 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 361 * caller's context, which will usually be the backend. That may not be a 362 * good thing. 363 */ 364 static void 365 cfcs_datamove(union ctl_io *io) 366 { 367 union ccb *ccb; 368 bus_dma_segment_t cam_sg_entry, *cam_sglist; 369 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 370 int cam_sg_count, ctl_sg_count, cam_sg_start; 371 int cam_sg_offset; 372 int len_to_copy, len_copied; 373 int ctl_watermark, cam_watermark; 374 int i, j; 375 376 377 cam_sg_offset = 0; 378 cam_sg_start = 0; 379 380 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 381 382 /* 383 * Note that we have a check in cfcs_action() to make sure that any 384 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 385 * is just to make sure no one removes that check without updating 386 * this code to provide the additional functionality necessary to 387 * support those modes of operation. 388 */ 389 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 390 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 391 392 /* 393 * Simplify things on both sides by putting single buffers into a 394 * single entry S/G list. 395 */ 396 if (ccb->ccb_h.flags & CAM_SCATTER_VALID) { 397 if (ccb->ccb_h.flags & CAM_SG_LIST_PHYS) { 398 /* We should filter this out on entry */ 399 panic("%s: physical S/G list, should not get here", 400 __func__); 401 } else { 402 int len_seen; 403 404 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 405 cam_sg_count = ccb->csio.sglist_cnt; 406 407 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 408 if ((len_seen + cam_sglist[i].ds_len) >= 409 io->scsiio.kern_rel_offset) { 410 cam_sg_start = i; 411 cam_sg_offset = 412 io->scsiio.kern_rel_offset - 413 len_seen; 414 break; 415 } 416 len_seen += cam_sglist[i].ds_len; 417 } 418 } 419 } else { 420 cam_sglist = &cam_sg_entry; 421 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 422 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 423 cam_sg_count = 1; 424 cam_sg_start = 0; 425 cam_sg_offset = io->scsiio.kern_rel_offset; 426 } 427 428 if (io->scsiio.kern_sg_entries > 0) { 429 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 430 ctl_sg_count = io->scsiio.kern_sg_entries; 431 } else { 432 ctl_sglist = &ctl_sg_entry; 433 ctl_sglist->addr = io->scsiio.kern_data_ptr; 434 ctl_sglist->len = io->scsiio.kern_data_len; 435 ctl_sg_count = 1; 436 } 437 438 ctl_watermark = 0; 439 cam_watermark = cam_sg_offset; 440 len_copied = 0; 441 for (i = cam_sg_start, j = 0; 442 i < cam_sg_count && j < ctl_sg_count;) { 443 uint8_t *cam_ptr, *ctl_ptr; 444 445 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 446 ctl_sglist[j].len - ctl_watermark); 447 448 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 449 cam_ptr = cam_ptr + cam_watermark; 450 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 451 /* 452 * XXX KDM fix this! 453 */ 454 panic("need to implement bus address support"); 455 #if 0 456 kern_ptr = bus_to_virt(kern_sglist[j].addr); 457 #endif 458 } else 459 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 460 ctl_ptr = ctl_ptr + ctl_watermark; 461 462 ctl_watermark += len_to_copy; 463 cam_watermark += len_to_copy; 464 465 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 466 CTL_FLAG_DATA_IN) { 467 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 468 __func__, len_to_copy)); 469 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 470 __func__, cam_ptr)); 471 bcopy(ctl_ptr, cam_ptr, len_to_copy); 472 } else { 473 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 474 __func__, len_to_copy)); 475 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 476 __func__, ctl_ptr)); 477 bcopy(cam_ptr, ctl_ptr, len_to_copy); 478 } 479 480 len_copied += len_to_copy; 481 482 if (cam_sglist[i].ds_len == cam_watermark) { 483 i++; 484 cam_watermark = 0; 485 } 486 487 if (ctl_sglist[j].len == ctl_watermark) { 488 j++; 489 ctl_watermark = 0; 490 } 491 } 492 493 io->scsiio.ext_data_filled += len_copied; 494 495 io->scsiio.be_move_done(io); 496 } 497 498 static void 499 cfcs_done(union ctl_io *io) 500 { 501 union ccb *ccb; 502 struct cfcs_softc *softc; 503 struct cam_sim *sim; 504 505 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 506 507 sim = xpt_path_sim(ccb->ccb_h.path); 508 softc = (struct cfcs_softc *)cam_sim_softc(sim); 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 mtx_lock(sim->mtx); 549 xpt_done(ccb); 550 mtx_unlock(sim->mtx); 551 552 ctl_free_io(io); 553 } 554 555 void 556 cfcs_action(struct cam_sim *sim, union ccb *ccb) 557 { 558 struct cfcs_softc *softc; 559 int err; 560 561 softc = (struct cfcs_softc *)cam_sim_softc(sim); 562 mtx_assert(&softc->lock, MA_OWNED); 563 564 switch (ccb->ccb_h.func_code) { 565 case XPT_SCSI_IO: { 566 union ctl_io *io; 567 struct ccb_scsiio *csio; 568 569 csio = &ccb->csio; 570 571 /* 572 * Catch CCB flags, like physical address flags, that 573 * indicate situations we currently can't handle. 574 */ 575 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 576 ccb->ccb_h.status = CAM_REQ_INVALID; 577 printf("%s: bad CCB flags %#x (all flags %#x)\n", 578 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 579 ccb->ccb_h.flags); 580 xpt_done(ccb); 581 return; 582 } 583 584 /* 585 * If we aren't online, there are no devices to see. 586 */ 587 if (softc->online == 0) { 588 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 589 xpt_done(ccb); 590 return; 591 } 592 593 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 594 if (io == NULL) { 595 printf("%s: can't allocate ctl_io\n", __func__); 596 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 597 xpt_freeze_devq(ccb->ccb_h.path, 1); 598 xpt_done(ccb); 599 return; 600 } 601 ctl_zero_io(io); 602 /* Save pointers on both sides */ 603 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 604 ccb->ccb_h.io_ptr = io; 605 606 /* 607 * Only SCSI I/O comes down this path, resets, etc. come 608 * down via the XPT_RESET_BUS/LUN CCBs below. 609 */ 610 io->io_hdr.io_type = CTL_IO_SCSI; 611 io->io_hdr.nexus.initid.id = 1; 612 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 613 /* 614 * XXX KDM how do we handle target IDs? 615 */ 616 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 617 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 618 /* 619 * This tag scheme isn't the best, since we could in theory 620 * have a very long-lived I/O and tag collision, especially 621 * in a high I/O environment. But it should work well 622 * enough for now. Since we're using unsigned ints, 623 * they'll just wrap around. 624 */ 625 io->scsiio.tag_num = softc->cur_tag_num++; 626 csio->tag_id = io->scsiio.tag_num; 627 switch (csio->tag_action) { 628 case CAM_TAG_ACTION_NONE: 629 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 630 break; 631 case MSG_SIMPLE_TASK: 632 io->scsiio.tag_type = CTL_TAG_SIMPLE; 633 break; 634 case MSG_HEAD_OF_QUEUE_TASK: 635 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 636 break; 637 case MSG_ORDERED_TASK: 638 io->scsiio.tag_type = CTL_TAG_ORDERED; 639 break; 640 case MSG_ACA_TASK: 641 io->scsiio.tag_type = CTL_TAG_ACA; 642 break; 643 default: 644 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 645 printf("%s: unhandled tag type %#x!!\n", __func__, 646 csio->tag_action); 647 break; 648 } 649 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 650 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 651 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 652 } 653 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 654 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 655 io->scsiio.cdb_len); 656 657 err = ctl_queue(io); 658 if (err != CTL_RETVAL_COMPLETE) { 659 printf("%s: func %d: error %d returned by " 660 "ctl_queue()!\n", __func__, 661 ccb->ccb_h.func_code, err); 662 ctl_free_io(io); 663 } else { 664 ccb->ccb_h.status |= CAM_SIM_QUEUED; 665 } 666 break; 667 } 668 case XPT_ABORT: { 669 union ctl_io *io; 670 union ccb *abort_ccb; 671 672 abort_ccb = ccb->cab.abort_ccb; 673 674 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 675 ccb->ccb_h.status = CAM_REQ_INVALID; 676 xpt_done(ccb); 677 } 678 679 /* 680 * If we aren't online, there are no devices to talk to. 681 */ 682 if (softc->online == 0) { 683 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 684 xpt_done(ccb); 685 return; 686 } 687 688 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 689 if (io == NULL) { 690 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 691 xpt_freeze_devq(ccb->ccb_h.path, 1); 692 xpt_done(ccb); 693 return; 694 } 695 696 ctl_zero_io(io); 697 /* Save pointers on both sides */ 698 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 699 ccb->ccb_h.io_ptr = io; 700 701 io->io_hdr.io_type = CTL_IO_TASK; 702 io->io_hdr.nexus.initid.id = 1; 703 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 704 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 705 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 706 io->taskio.task_action = CTL_TASK_ABORT_TASK; 707 io->taskio.tag_num = abort_ccb->csio.tag_id; 708 switch (abort_ccb->csio.tag_action) { 709 case CAM_TAG_ACTION_NONE: 710 io->taskio.tag_type = CTL_TAG_UNTAGGED; 711 break; 712 case MSG_SIMPLE_TASK: 713 io->taskio.tag_type = CTL_TAG_SIMPLE; 714 break; 715 case MSG_HEAD_OF_QUEUE_TASK: 716 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 717 break; 718 case MSG_ORDERED_TASK: 719 io->taskio.tag_type = CTL_TAG_ORDERED; 720 break; 721 case MSG_ACA_TASK: 722 io->taskio.tag_type = CTL_TAG_ACA; 723 break; 724 default: 725 io->taskio.tag_type = CTL_TAG_UNTAGGED; 726 printf("%s: unhandled tag type %#x!!\n", __func__, 727 abort_ccb->csio.tag_action); 728 break; 729 } 730 err = ctl_queue(io); 731 if (err != CTL_RETVAL_COMPLETE) { 732 printf("%s func %d: error %d returned by " 733 "ctl_queue()!\n", __func__, 734 ccb->ccb_h.func_code, err); 735 ctl_free_io(io); 736 } 737 break; 738 } 739 case XPT_GET_TRAN_SETTINGS: { 740 struct ccb_trans_settings *cts; 741 struct ccb_trans_settings_scsi *scsi; 742 struct ccb_trans_settings_fc *fc; 743 744 cts = &ccb->cts; 745 scsi = &cts->proto_specific.scsi; 746 fc = &cts->xport_specific.fc; 747 748 749 cts->protocol = PROTO_SCSI; 750 cts->protocol_version = SCSI_REV_SPC2; 751 cts->transport = XPORT_FC; 752 cts->transport_version = 0; 753 754 scsi->valid = CTS_SCSI_VALID_TQ; 755 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 756 fc->valid = CTS_FC_VALID_SPEED; 757 fc->bitrate = 800000; 758 fc->wwnn = softc->wwnn; 759 fc->wwpn = softc->wwpn; 760 fc->port = softc->fe.targ_port; 761 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 762 CTS_FC_VALID_PORT; 763 ccb->ccb_h.status = CAM_REQ_CMP; 764 break; 765 } 766 case XPT_SET_TRAN_SETTINGS: 767 /* XXX KDM should we actually do something here? */ 768 ccb->ccb_h.status = CAM_REQ_CMP; 769 break; 770 case XPT_RESET_BUS: 771 case XPT_RESET_DEV: { 772 union ctl_io *io; 773 774 /* 775 * If we aren't online, there are no devices to talk to. 776 */ 777 if (softc->online == 0) { 778 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 779 xpt_done(ccb); 780 return; 781 } 782 783 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 784 if (io == NULL) { 785 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 786 xpt_freeze_devq(ccb->ccb_h.path, 1); 787 xpt_done(ccb); 788 return; 789 } 790 791 ctl_zero_io(io); 792 /* Save pointers on both sides */ 793 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 794 ccb->ccb_h.io_ptr = io; 795 796 io->io_hdr.io_type = CTL_IO_TASK; 797 io->io_hdr.nexus.initid.id = 0; 798 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 799 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 800 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 801 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 802 io->taskio.task_action = CTL_TASK_BUS_RESET; 803 else 804 io->taskio.task_action = CTL_TASK_LUN_RESET; 805 806 err = ctl_queue(io); 807 if (err != CTL_RETVAL_COMPLETE) { 808 printf("%s func %d: error %d returned by " 809 "ctl_queue()!\n", __func__, 810 ccb->ccb_h.func_code, err); 811 ctl_free_io(io); 812 } 813 break; 814 } 815 case XPT_CALC_GEOMETRY: 816 cam_calc_geometry(&ccb->ccg, 1); 817 xpt_done(ccb); 818 break; 819 case XPT_PATH_INQ: { 820 struct ccb_pathinq *cpi; 821 822 cpi = &ccb->cpi; 823 824 cpi->version_num = 0; 825 cpi->hba_inquiry = PI_TAG_ABLE; 826 cpi->target_sprt = 0; 827 cpi->hba_misc = 0; 828 cpi->hba_eng_cnt = 0; 829 cpi->max_target = 1; 830 cpi->max_lun = 1024; 831 /* Do we really have a limit? */ 832 cpi->maxio = 1024 * 1024; 833 cpi->async_flags = 0; 834 cpi->hpath_id = 0; 835 cpi->initiator_id = 0; 836 837 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 838 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 839 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 840 cpi->unit_number = 0; 841 cpi->bus_id = 0; 842 cpi->base_transfer_speed = 800000; 843 cpi->protocol = PROTO_SCSI; 844 cpi->protocol_version = SCSI_REV_SPC2; 845 /* 846 * Pretend to be Fibre Channel. 847 */ 848 cpi->transport = XPORT_FC; 849 cpi->transport_version = 0; 850 cpi->xport_specific.fc.wwnn = softc->wwnn; 851 cpi->xport_specific.fc.wwpn = softc->wwpn; 852 cpi->xport_specific.fc.port = softc->fe.targ_port; 853 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 854 cpi->ccb_h.status = CAM_REQ_CMP; 855 break; 856 } 857 default: 858 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 859 printf("%s: unsupported CCB type %#x\n", __func__, 860 ccb->ccb_h.func_code); 861 xpt_done(ccb); 862 break; 863 } 864 } 865 866 static void 867 cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 868 { 869 870 } 871