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