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 retval = 1; 179 goto bailout; 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 } 209 210 211 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 mtx_lock(&softc->lock); 228 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 229 mtx_unlock(&softc->lock); 230 printf("%s: error registering SIM\n", __func__); 231 retval = ENOMEM; 232 goto bailout; 233 } 234 235 if (xpt_create_path(&softc->path, /*periph*/NULL, 236 cam_sim_path(softc->sim), 237 CAM_TARGET_WILDCARD, 238 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 239 mtx_unlock(&softc->lock); 240 printf("%s: error creating path\n", __func__); 241 xpt_bus_deregister(cam_sim_path(softc->sim)); 242 retval = 1; 243 goto bailout; 244 } 245 246 mtx_unlock(&softc->lock); 247 248 xpt_setup_ccb(&csa.ccb_h, softc->path, /*priority*/ 5); 249 csa.ccb_h.func_code = XPT_SASYNC_CB; 250 csa.event_enable = AC_LOST_DEVICE; 251 csa.callback = cfcs_async; 252 csa.callback_arg = softc->sim; 253 xpt_action((union ccb *)&csa); 254 255 return (retval); 256 257 bailout: 258 if (softc->sim) 259 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 260 else if (softc->devq) 261 cam_simq_free(softc->devq); 262 263 return (retval); 264 } 265 266 static void 267 cfcs_poll(struct cam_sim *sim) 268 { 269 270 } 271 272 void 273 cfcs_shutdown(void) 274 { 275 276 } 277 278 static void 279 cfcs_online(void *arg) 280 { 281 struct cfcs_softc *softc; 282 union ccb *ccb; 283 284 softc = (struct cfcs_softc *)arg; 285 286 mtx_lock(&softc->lock); 287 softc->online = 1; 288 mtx_unlock(&softc->lock); 289 290 ccb = xpt_alloc_ccb_nowait(); 291 if (ccb == NULL) { 292 printf("%s: unable to allocate CCB for rescan\n", __func__); 293 return; 294 } 295 296 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 297 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 298 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 299 printf("%s: can't allocate path for rescan\n", __func__); 300 xpt_free_ccb(ccb); 301 return; 302 } 303 xpt_rescan(ccb); 304 } 305 306 static void 307 cfcs_offline(void *arg) 308 { 309 struct cfcs_softc *softc; 310 union ccb *ccb; 311 312 softc = (struct cfcs_softc *)arg; 313 314 mtx_lock(&softc->lock); 315 softc->online = 0; 316 mtx_unlock(&softc->lock); 317 318 ccb = xpt_alloc_ccb_nowait(); 319 if (ccb == NULL) { 320 printf("%s: unable to allocate CCB for rescan\n", __func__); 321 return; 322 } 323 324 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 325 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 326 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 327 printf("%s: can't allocate path for rescan\n", __func__); 328 xpt_free_ccb(ccb); 329 return; 330 } 331 xpt_rescan(ccb); 332 } 333 334 static int 335 cfcs_targ_enable(void *arg, struct ctl_id targ_id) 336 { 337 return (0); 338 } 339 340 static int 341 cfcs_targ_disable(void *arg, struct ctl_id targ_id) 342 { 343 return (0); 344 } 345 346 static int 347 cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 348 { 349 return (0); 350 } 351 static int 352 cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 353 { 354 return (0); 355 } 356 357 /* 358 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 359 * way to combine the functionality? 360 * 361 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 362 * caller's context, which will usually be the backend. That may not be a 363 * good thing. 364 */ 365 static void 366 cfcs_datamove(union ctl_io *io) 367 { 368 union ccb *ccb; 369 bus_dma_segment_t cam_sg_entry, *cam_sglist; 370 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 371 int cam_sg_count, ctl_sg_count, cam_sg_start; 372 int cam_sg_offset; 373 int len_to_copy, len_copied; 374 int ctl_watermark, cam_watermark; 375 int i, j; 376 377 378 cam_sg_offset = 0; 379 cam_sg_start = 0; 380 381 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 382 383 /* 384 * Note that we have a check in cfcs_action() to make sure that any 385 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 386 * is just to make sure no one removes that check without updating 387 * this code to provide the additional functionality necessary to 388 * support those modes of operation. 389 */ 390 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 391 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 392 393 /* 394 * Simplify things on both sides by putting single buffers into a 395 * single entry S/G list. 396 */ 397 if (ccb->ccb_h.flags & CAM_SCATTER_VALID) { 398 if (ccb->ccb_h.flags & CAM_SG_LIST_PHYS) { 399 /* We should filter this out on entry */ 400 panic("%s: physical S/G list, should not get here", 401 __func__); 402 } else { 403 int len_seen; 404 405 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 406 cam_sg_count = ccb->csio.sglist_cnt; 407 408 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 409 if ((len_seen + cam_sglist[i].ds_len) >= 410 io->scsiio.kern_rel_offset) { 411 cam_sg_start = i; 412 cam_sg_offset = 413 io->scsiio.kern_rel_offset - 414 len_seen; 415 break; 416 } 417 len_seen += cam_sglist[i].ds_len; 418 } 419 } 420 } else { 421 cam_sglist = &cam_sg_entry; 422 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 423 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 424 cam_sg_count = 1; 425 cam_sg_start = 0; 426 cam_sg_offset = io->scsiio.kern_rel_offset; 427 } 428 429 if (io->scsiio.kern_sg_entries > 0) { 430 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 431 ctl_sg_count = io->scsiio.kern_sg_entries; 432 } else { 433 ctl_sglist = &ctl_sg_entry; 434 ctl_sglist->addr = io->scsiio.kern_data_ptr; 435 ctl_sglist->len = io->scsiio.kern_data_len; 436 ctl_sg_count = 1; 437 } 438 439 ctl_watermark = 0; 440 cam_watermark = cam_sg_offset; 441 len_copied = 0; 442 for (i = cam_sg_start, j = 0; 443 i < cam_sg_count && j < ctl_sg_count;) { 444 uint8_t *cam_ptr, *ctl_ptr; 445 446 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 447 ctl_sglist[j].len - ctl_watermark); 448 449 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 450 cam_ptr = cam_ptr + cam_watermark; 451 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 452 /* 453 * XXX KDM fix this! 454 */ 455 panic("need to implement bus address support"); 456 #if 0 457 kern_ptr = bus_to_virt(kern_sglist[j].addr); 458 #endif 459 } else 460 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 461 ctl_ptr = ctl_ptr + ctl_watermark; 462 463 ctl_watermark += len_to_copy; 464 cam_watermark += len_to_copy; 465 466 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 467 CTL_FLAG_DATA_IN) { 468 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 469 __func__, len_to_copy)); 470 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 471 __func__, cam_ptr)); 472 bcopy(ctl_ptr, cam_ptr, len_to_copy); 473 } else { 474 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 475 __func__, len_to_copy)); 476 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 477 __func__, ctl_ptr)); 478 bcopy(cam_ptr, ctl_ptr, len_to_copy); 479 } 480 481 len_copied += len_to_copy; 482 483 if (cam_sglist[i].ds_len == cam_watermark) { 484 i++; 485 cam_watermark = 0; 486 } 487 488 if (ctl_sglist[j].len == ctl_watermark) { 489 j++; 490 ctl_watermark = 0; 491 } 492 } 493 494 io->scsiio.ext_data_filled += len_copied; 495 496 io->scsiio.be_move_done(io); 497 } 498 499 static void 500 cfcs_done(union ctl_io *io) 501 { 502 union ccb *ccb; 503 struct cfcs_softc *softc; 504 struct cam_sim *sim; 505 506 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 507 508 sim = xpt_path_sim(ccb->ccb_h.path); 509 softc = (struct cfcs_softc *)cam_sim_softc(sim); 510 511 /* 512 * At this point we should have status. If we don't, that's a bug. 513 */ 514 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 515 ("invalid CTL status %#x", io->io_hdr.status)); 516 517 /* 518 * Translate CTL status to CAM status. 519 */ 520 switch (io->io_hdr.status & CTL_STATUS_MASK) { 521 case CTL_SUCCESS: 522 ccb->ccb_h.status = CAM_REQ_CMP; 523 break; 524 case CTL_SCSI_ERROR: 525 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 526 ccb->csio.scsi_status = io->scsiio.scsi_status; 527 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 528 min(io->scsiio.sense_len, ccb->csio.sense_len)); 529 if (ccb->csio.sense_len > io->scsiio.sense_len) 530 ccb->csio.sense_resid = ccb->csio.sense_len - 531 io->scsiio.sense_len; 532 else 533 ccb->csio.sense_resid = 0; 534 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 535 cfcs_max_sense) { 536 ccb->csio.sense_resid = ccb->csio.sense_len - 537 cfcs_max_sense; 538 } 539 break; 540 case CTL_CMD_ABORTED: 541 ccb->ccb_h.status = CAM_REQ_ABORTED; 542 break; 543 case CTL_ERROR: 544 default: 545 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 546 break; 547 } 548 549 mtx_lock(sim->mtx); 550 xpt_done(ccb); 551 mtx_unlock(sim->mtx); 552 553 ctl_free_io(io); 554 } 555 556 void 557 cfcs_action(struct cam_sim *sim, union ccb *ccb) 558 { 559 struct cfcs_softc *softc; 560 int err; 561 562 softc = (struct cfcs_softc *)cam_sim_softc(sim); 563 mtx_assert(&softc->lock, MA_OWNED); 564 565 switch (ccb->ccb_h.func_code) { 566 case XPT_SCSI_IO: { 567 union ctl_io *io; 568 struct ccb_scsiio *csio; 569 570 csio = &ccb->csio; 571 572 /* 573 * Catch CCB flags, like physical address flags, that 574 * indicate situations we currently can't handle. 575 */ 576 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 577 ccb->ccb_h.status = CAM_REQ_INVALID; 578 printf("%s: bad CCB flags %#x (all flags %#x)\n", 579 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 580 ccb->ccb_h.flags); 581 xpt_done(ccb); 582 return; 583 } 584 585 /* 586 * If we aren't online, there are no devices to see. 587 */ 588 if (softc->online == 0) { 589 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 590 xpt_done(ccb); 591 return; 592 } 593 594 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 595 if (io == NULL) { 596 printf("%s: can't allocate ctl_io\n", __func__); 597 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 598 xpt_freeze_devq(ccb->ccb_h.path, 1); 599 xpt_done(ccb); 600 return; 601 } 602 ctl_zero_io(io); 603 /* Save pointers on both sides */ 604 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 605 ccb->ccb_h.io_ptr = io; 606 607 /* 608 * Only SCSI I/O comes down this path, resets, etc. come 609 * down via the XPT_RESET_BUS/LUN CCBs below. 610 */ 611 io->io_hdr.io_type = CTL_IO_SCSI; 612 io->io_hdr.nexus.initid.id = 1; 613 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 614 /* 615 * XXX KDM how do we handle target IDs? 616 */ 617 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 618 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 619 /* 620 * This tag scheme isn't the best, since we could in theory 621 * have a very long-lived I/O and tag collision, especially 622 * in a high I/O environment. But it should work well 623 * enough for now. Since we're using unsigned ints, 624 * they'll just wrap around. 625 */ 626 io->scsiio.tag_num = softc->cur_tag_num++; 627 csio->tag_id = io->scsiio.tag_num; 628 switch (csio->tag_action) { 629 case CAM_TAG_ACTION_NONE: 630 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 631 break; 632 case MSG_SIMPLE_TASK: 633 io->scsiio.tag_type = CTL_TAG_SIMPLE; 634 break; 635 case MSG_HEAD_OF_QUEUE_TASK: 636 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 637 break; 638 case MSG_ORDERED_TASK: 639 io->scsiio.tag_type = CTL_TAG_ORDERED; 640 break; 641 case MSG_ACA_TASK: 642 io->scsiio.tag_type = CTL_TAG_ACA; 643 break; 644 default: 645 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 646 printf("%s: unhandled tag type %#x!!\n", __func__, 647 csio->tag_action); 648 break; 649 } 650 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 651 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 652 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 653 } 654 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 655 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 656 io->scsiio.cdb_len); 657 658 err = ctl_queue(io); 659 if (err != CTL_RETVAL_COMPLETE) { 660 printf("%s: func %d: error %d returned by " 661 "ctl_queue()!\n", __func__, 662 ccb->ccb_h.func_code, err); 663 ctl_free_io(io); 664 } else { 665 ccb->ccb_h.status |= CAM_SIM_QUEUED; 666 } 667 break; 668 } 669 case XPT_ABORT: { 670 union ctl_io *io; 671 union ccb *abort_ccb; 672 673 abort_ccb = ccb->cab.abort_ccb; 674 675 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 676 ccb->ccb_h.status = CAM_REQ_INVALID; 677 xpt_done(ccb); 678 } 679 680 /* 681 * If we aren't online, there are no devices to talk to. 682 */ 683 if (softc->online == 0) { 684 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 685 xpt_done(ccb); 686 return; 687 } 688 689 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 690 if (io == NULL) { 691 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 692 xpt_freeze_devq(ccb->ccb_h.path, 1); 693 xpt_done(ccb); 694 return; 695 } 696 697 ctl_zero_io(io); 698 /* Save pointers on both sides */ 699 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 700 ccb->ccb_h.io_ptr = io; 701 702 io->io_hdr.io_type = CTL_IO_TASK; 703 io->io_hdr.nexus.initid.id = 1; 704 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 705 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 706 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 707 io->taskio.task_action = CTL_TASK_ABORT_TASK; 708 io->taskio.tag_num = abort_ccb->csio.tag_id; 709 switch (abort_ccb->csio.tag_action) { 710 case CAM_TAG_ACTION_NONE: 711 io->taskio.tag_type = CTL_TAG_UNTAGGED; 712 break; 713 case MSG_SIMPLE_TASK: 714 io->taskio.tag_type = CTL_TAG_SIMPLE; 715 break; 716 case MSG_HEAD_OF_QUEUE_TASK: 717 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 718 break; 719 case MSG_ORDERED_TASK: 720 io->taskio.tag_type = CTL_TAG_ORDERED; 721 break; 722 case MSG_ACA_TASK: 723 io->taskio.tag_type = CTL_TAG_ACA; 724 break; 725 default: 726 io->taskio.tag_type = CTL_TAG_UNTAGGED; 727 printf("%s: unhandled tag type %#x!!\n", __func__, 728 abort_ccb->csio.tag_action); 729 break; 730 } 731 err = ctl_queue(io); 732 if (err != CTL_RETVAL_COMPLETE) { 733 printf("%s func %d: error %d returned by " 734 "ctl_queue()!\n", __func__, 735 ccb->ccb_h.func_code, err); 736 ctl_free_io(io); 737 } 738 break; 739 } 740 case XPT_GET_TRAN_SETTINGS: { 741 struct ccb_trans_settings *cts; 742 struct ccb_trans_settings_scsi *scsi; 743 struct ccb_trans_settings_fc *fc; 744 745 cts = &ccb->cts; 746 scsi = &cts->proto_specific.scsi; 747 fc = &cts->xport_specific.fc; 748 749 750 cts->protocol = PROTO_SCSI; 751 cts->protocol_version = SCSI_REV_SPC2; 752 cts->transport = XPORT_FC; 753 cts->transport_version = 0; 754 755 scsi->valid = CTS_SCSI_VALID_TQ; 756 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 757 fc->valid = CTS_FC_VALID_SPEED; 758 fc->bitrate = 800000; 759 fc->wwnn = softc->wwnn; 760 fc->wwpn = softc->wwpn; 761 fc->port = softc->fe.targ_port; 762 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 763 CTS_FC_VALID_PORT; 764 ccb->ccb_h.status = CAM_REQ_CMP; 765 break; 766 } 767 case XPT_SET_TRAN_SETTINGS: 768 /* XXX KDM should we actually do something here? */ 769 ccb->ccb_h.status = CAM_REQ_CMP; 770 break; 771 case XPT_RESET_BUS: 772 case XPT_RESET_DEV: { 773 union ctl_io *io; 774 775 /* 776 * If we aren't online, there are no devices to talk to. 777 */ 778 if (softc->online == 0) { 779 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 780 xpt_done(ccb); 781 return; 782 } 783 784 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 785 if (io == NULL) { 786 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 787 xpt_freeze_devq(ccb->ccb_h.path, 1); 788 xpt_done(ccb); 789 return; 790 } 791 792 ctl_zero_io(io); 793 /* Save pointers on both sides */ 794 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 795 ccb->ccb_h.io_ptr = io; 796 797 io->io_hdr.io_type = CTL_IO_TASK; 798 io->io_hdr.nexus.initid.id = 0; 799 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 800 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 801 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 802 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 803 io->taskio.task_action = CTL_TASK_BUS_RESET; 804 else 805 io->taskio.task_action = CTL_TASK_LUN_RESET; 806 807 err = ctl_queue(io); 808 if (err != CTL_RETVAL_COMPLETE) { 809 printf("%s func %d: error %d returned by " 810 "ctl_queue()!\n", __func__, 811 ccb->ccb_h.func_code, err); 812 ctl_free_io(io); 813 } 814 break; 815 } 816 case XPT_CALC_GEOMETRY: 817 cam_calc_geometry(&ccb->ccg, 1); 818 xpt_done(ccb); 819 break; 820 case XPT_PATH_INQ: { 821 struct ccb_pathinq *cpi; 822 823 cpi = &ccb->cpi; 824 825 cpi->version_num = 0; 826 cpi->hba_inquiry = PI_TAG_ABLE; 827 cpi->target_sprt = 0; 828 cpi->hba_misc = 0; 829 cpi->hba_eng_cnt = 0; 830 cpi->max_target = 1; 831 cpi->max_lun = 1024; 832 /* Do we really have a limit? */ 833 cpi->maxio = 1024 * 1024; 834 cpi->async_flags = 0; 835 cpi->hpath_id = 0; 836 cpi->initiator_id = 0; 837 838 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 839 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 840 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 841 cpi->unit_number = 0; 842 cpi->bus_id = 0; 843 cpi->base_transfer_speed = 800000; 844 cpi->protocol = PROTO_SCSI; 845 cpi->protocol_version = SCSI_REV_SPC2; 846 /* 847 * Pretend to be Fibre Channel. 848 */ 849 cpi->transport = XPORT_FC; 850 cpi->transport_version = 0; 851 cpi->xport_specific.fc.wwnn = softc->wwnn; 852 cpi->xport_specific.fc.wwpn = softc->wwpn; 853 cpi->xport_specific.fc.port = softc->fe.targ_port; 854 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 855 cpi->ccb_h.status = CAM_REQ_CMP; 856 break; 857 } 858 default: 859 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 860 printf("%s: unsupported CCB type %#x\n", __func__, 861 ccb->ccb_h.func_code); 862 xpt_done(ccb); 863 break; 864 } 865 } 866 867 static void 868 cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 869 { 870 871 } 872