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_debug.h> 69 70#define io_ptr spriv_ptr1 71 72struct cfcs_io { 73 union ccb *ccb; 74}; 75 76struct cfcs_softc { 77 struct ctl_frontend fe; 78 char port_name[32]; 79 struct cam_sim *sim; 80 struct cam_devq *devq; 81 struct cam_path *path; 82 struct mtx lock; 83 char lock_desc[32]; 84 uint64_t wwnn; 85 uint64_t wwpn; 86 uint32_t cur_tag_num; 87 int online; 88}; 89 90/* 91 * We can't handle CCBs with these flags. For the most part, we just don't 92 * handle physical addresses yet. That would require mapping things in 93 * order to do the copy. 94 */ 95#define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 96 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 97 CAM_SENSE_PHYS) 98 99int cfcs_init(void); 100void cfcs_shutdown(void); 101static void cfcs_poll(struct cam_sim *sim); 102static void cfcs_online(void *arg); 103static void cfcs_offline(void *arg); 104static int cfcs_targ_enable(void *arg, struct ctl_id targ_id); 105static int cfcs_targ_disable(void *arg, struct ctl_id targ_id); 106static int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id); 107static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id); 108static void cfcs_datamove(union ctl_io *io); 109static void cfcs_done(union ctl_io *io); 110void cfcs_action(struct cam_sim *sim, union ccb *ccb); 111static void cfcs_async(void *callback_arg, uint32_t code, 112 struct cam_path *path, void *arg); 113 114struct cfcs_softc cfcs_softc; 115/* 116 * This is primarly intended to allow for error injection to test the CAM 117 * sense data and sense residual handling code. This sets the maximum 118 * amount of SCSI sense data that we will report to CAM. 119 */ 120static int cfcs_max_sense = sizeof(struct scsi_sense_data); 121extern int ctl_disable; 122 123SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 124 "CAM Target Layer SIM frontend"); 125SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 126 &cfcs_max_sense, 0, "Maximum sense data size"); 127 128static int cfcs_module_event_handler(module_t, int /*modeventtype_t*/, void *); 129 130static moduledata_t cfcs_moduledata = { 131 "ctlcfcs", 132 cfcs_module_event_handler, 133 NULL 134}; 135 136DECLARE_MODULE(ctlcfcs, cfcs_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 137MODULE_VERSION(ctlcfcs, 1); 138MODULE_DEPEND(ctlcfi, ctl, 1, 1, 1); 139MODULE_DEPEND(ctlcfi, cam, 1, 1, 1); 140 141int 142cfcs_init(void) 143{ 144 struct cfcs_softc *softc; 145 struct ccb_setasync csa; 146 struct ctl_frontend *fe; 147#ifdef NEEDTOPORT 148 char wwnn[8]; 149#endif 150 int retval; 151 152 /* Don't continue if CTL is disabled */ 153 if (ctl_disable != 0) 154 return (0); 155 156 softc = &cfcs_softc; 157 retval = 0; 158 bzero(softc, sizeof(*softc)); 159 sprintf(softc->lock_desc, "ctl2cam"); 160 mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF); 161 fe = &softc->fe; 162 163 fe->port_type = CTL_PORT_INTERNAL; 164 /* XXX KDM what should the real number be here? */ 165 fe->num_requested_ctl_io = 4096; 166 snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam"); 167 fe->port_name = softc->port_name; 168 fe->port_online = cfcs_online; 169 fe->port_offline = cfcs_offline; 170 fe->onoff_arg = softc; 171 fe->targ_enable = cfcs_targ_enable; 172 fe->targ_disable = cfcs_targ_disable; 173 fe->lun_enable = cfcs_lun_enable; 174 fe->lun_disable = cfcs_lun_disable; 175 fe->targ_lun_arg = softc; 176 fe->fe_datamove = cfcs_datamove; 177 fe->fe_done = cfcs_done; 178 179 /* XXX KDM what should we report here? */ 180 /* XXX These should probably be fetched from CTL. */ 181 fe->max_targets = 1; 182 fe->max_target_id = 15; 183 184 retval = ctl_frontend_register(fe, /*master_SC*/ 1); 185 if (retval != 0) { 186 printf("%s: ctl_frontend_register() failed with error %d!\n", 187 __func__, retval); 188 mtx_destroy(&softc->lock); 189 return (retval); 190 } 191 192 /* 193 * Get the WWNN out of the database, and create a WWPN as well. 194 */ 195#ifdef NEEDTOPORT 196 ddb_GetWWNN((char *)wwnn); 197 softc->wwnn = be64dec(wwnn); 198 softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff); 199#endif 200 201 /* 202 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 203 * ahead and set something random. 204 */ 205 if (fe->wwnn == 0) { 206 uint64_t random_bits; 207 208 arc4rand(&random_bits, sizeof(random_bits), 0); 209 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 210 /* Company ID */ 0x5000000000000000ULL | 211 /* NL-Port */ 0x0300; 212 softc->wwpn = softc->wwnn + fe->targ_port + 1; 213 fe->wwnn = softc->wwnn; 214 fe->wwpn = softc->wwpn; 215 } else { 216 softc->wwnn = fe->wwnn; 217 softc->wwpn = fe->wwpn; 218 } 219 220 mtx_lock(&softc->lock); 221 softc->devq = cam_simq_alloc(fe->num_requested_ctl_io); 222 if (softc->devq == NULL) { 223 printf("%s: error allocating devq\n", __func__); 224 retval = ENOMEM; 225 goto bailout; 226 } 227 228 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 229 softc, /*unit*/ 0, &softc->lock, 1, 230 fe->num_requested_ctl_io, softc->devq); 231 if (softc->sim == NULL) { 232 printf("%s: error allocating SIM\n", __func__); 233 retval = ENOMEM; 234 goto bailout; 235 } 236 237 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 238 printf("%s: error registering SIM\n", __func__); 239 retval = ENOMEM; 240 goto bailout; 241 } 242 243 if (xpt_create_path(&softc->path, /*periph*/NULL, 244 cam_sim_path(softc->sim), 245 CAM_TARGET_WILDCARD, 246 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 247 printf("%s: error creating path\n", __func__); 248 xpt_bus_deregister(cam_sim_path(softc->sim)); 249 retval = EINVAL; 250 goto bailout; 251 } 252 253 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 254 csa.ccb_h.func_code = XPT_SASYNC_CB; 255 csa.event_enable = AC_LOST_DEVICE; 256 csa.callback = cfcs_async; 257 csa.callback_arg = softc->sim; 258 xpt_action((union ccb *)&csa); 259 260 mtx_unlock(&softc->lock); 261 262 return (retval); 263 264bailout: 265 if (softc->sim) 266 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 267 else if (softc->devq) 268 cam_simq_free(softc->devq); 269 mtx_unlock(&softc->lock); 270 mtx_destroy(&softc->lock); 271 272 return (retval); 273} 274 275static void 276cfcs_poll(struct cam_sim *sim) 277{ 278 279} 280 281void 282cfcs_shutdown(void) 283{ 284 285} 286 287static int 288cfcs_module_event_handler(module_t mod, int what, void *arg) 289{ 290 291 switch (what) { 292 case MOD_LOAD: 293 return (cfcs_init()); 294 case MOD_UNLOAD: 295 return (EBUSY); 296 default: 297 return (EOPNOTSUPP); 298 } 299} 300 301static void 302cfcs_onoffline(void *arg, int online) 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 = online; 311 312 ccb = xpt_alloc_ccb_nowait(); 313 if (ccb == NULL) { 314 printf("%s: unable to allocate CCB for rescan\n", __func__); 315 goto bailout; 316 } 317 318 if (xpt_create_path(&ccb->ccb_h.path, NULL, 319 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 320 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 321 printf("%s: can't allocate path for rescan\n", __func__); 322 xpt_free_ccb(ccb); 323 goto bailout; 324 } 325 xpt_rescan(ccb); 326 327bailout: 328 mtx_unlock(&softc->lock); 329} 330 331static void 332cfcs_online(void *arg) 333{ 334 cfcs_onoffline(arg, /*online*/ 1); 335} 336 337static void 338cfcs_offline(void *arg) 339{ 340 cfcs_onoffline(arg, /*online*/ 0); 341} 342 343static int 344cfcs_targ_enable(void *arg, struct ctl_id targ_id) 345{ 346 return (0); 347} 348 349static int 350cfcs_targ_disable(void *arg, struct ctl_id targ_id) 351{ 352 return (0); 353} 354 355static int 356cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 357{ 358 return (0); 359} 360static int 361cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 362{ 363 return (0); 364} 365 366/* 367 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 368 * way to combine the functionality? 369 * 370 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 371 * caller's context, which will usually be the backend. That may not be a 372 * good thing. 373 */ 374static void 375cfcs_datamove(union ctl_io *io) 376{ 377 union ccb *ccb; 378 bus_dma_segment_t cam_sg_entry, *cam_sglist; 379 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 380 int cam_sg_count, ctl_sg_count, cam_sg_start; 381 int cam_sg_offset; 382 int len_to_copy, len_copied; 383 int ctl_watermark, cam_watermark; 384 int i, j; 385 386 387 cam_sg_offset = 0; 388 cam_sg_start = 0; 389 390 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 391 392 /* 393 * Note that we have a check in cfcs_action() to make sure that any 394 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 395 * is just to make sure no one removes that check without updating 396 * this code to provide the additional functionality necessary to 397 * support those modes of operation. 398 */ 399 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 400 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 401 402 /* 403 * Simplify things on both sides by putting single buffers into a 404 * single entry S/G list. 405 */ 406 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 407 case CAM_DATA_SG: { 408 int len_seen; 409 410 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 411 cam_sg_count = ccb->csio.sglist_cnt; 412 413 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 414 if ((len_seen + cam_sglist[i].ds_len) >= 415 io->scsiio.kern_rel_offset) { 416 cam_sg_start = i; 417 cam_sg_offset = io->scsiio.kern_rel_offset - 418 len_seen; 419 break; 420 } 421 len_seen += cam_sglist[i].ds_len; 422 } 423 break; 424 } 425 case CAM_DATA_VADDR: 426 cam_sglist = &cam_sg_entry; 427 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 428 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 429 cam_sg_count = 1; 430 cam_sg_start = 0; 431 cam_sg_offset = io->scsiio.kern_rel_offset; 432 break; 433 default: 434 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 435 } 436 437 if (io->scsiio.kern_sg_entries > 0) { 438 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 439 ctl_sg_count = io->scsiio.kern_sg_entries; 440 } else { 441 ctl_sglist = &ctl_sg_entry; 442 ctl_sglist->addr = io->scsiio.kern_data_ptr; 443 ctl_sglist->len = io->scsiio.kern_data_len; 444 ctl_sg_count = 1; 445 } 446 447 ctl_watermark = 0; 448 cam_watermark = cam_sg_offset; 449 len_copied = 0; 450 for (i = cam_sg_start, j = 0; 451 i < cam_sg_count && j < ctl_sg_count;) { 452 uint8_t *cam_ptr, *ctl_ptr; 453 454 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 455 ctl_sglist[j].len - ctl_watermark); 456 457 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 458 cam_ptr = cam_ptr + cam_watermark; 459 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 460 /* 461 * XXX KDM fix this! 462 */ 463 panic("need to implement bus address support"); 464#if 0 465 kern_ptr = bus_to_virt(kern_sglist[j].addr); 466#endif 467 } else 468 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 469 ctl_ptr = ctl_ptr + ctl_watermark; 470 471 ctl_watermark += len_to_copy; 472 cam_watermark += len_to_copy; 473 474 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 475 CTL_FLAG_DATA_IN) { 476 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 477 __func__, len_to_copy)); 478 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 479 __func__, cam_ptr)); 480 bcopy(ctl_ptr, cam_ptr, len_to_copy); 481 } else { 482 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 483 __func__, len_to_copy)); 484 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 485 __func__, ctl_ptr)); 486 bcopy(cam_ptr, ctl_ptr, len_to_copy); 487 } 488 489 len_copied += len_to_copy; 490 491 if (cam_sglist[i].ds_len == cam_watermark) { 492 i++; 493 cam_watermark = 0; 494 } 495 496 if (ctl_sglist[j].len == ctl_watermark) { 497 j++; 498 ctl_watermark = 0; 499 } 500 } 501 502 io->scsiio.ext_data_filled += len_copied; 503 504 io->scsiio.be_move_done(io); 505} 506 507static void 508cfcs_done(union ctl_io *io) 509{ 510 union ccb *ccb; 511 struct cfcs_softc *softc; 512 struct cam_sim *sim; 513 514 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 515 516 sim = xpt_path_sim(ccb->ccb_h.path); 517 softc = (struct cfcs_softc *)cam_sim_softc(sim); 518 519 /* 520 * At this point we should have status. If we don't, that's a bug. 521 */ 522 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 523 ("invalid CTL status %#x", io->io_hdr.status)); 524 525 /* 526 * Translate CTL status to CAM status. 527 */ 528 switch (io->io_hdr.status & CTL_STATUS_MASK) { 529 case CTL_SUCCESS: 530 ccb->ccb_h.status = CAM_REQ_CMP; 531 break; 532 case CTL_SCSI_ERROR: 533 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 534 ccb->csio.scsi_status = io->scsiio.scsi_status; 535 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 536 min(io->scsiio.sense_len, ccb->csio.sense_len)); 537 if (ccb->csio.sense_len > io->scsiio.sense_len) 538 ccb->csio.sense_resid = ccb->csio.sense_len - 539 io->scsiio.sense_len; 540 else 541 ccb->csio.sense_resid = 0; 542 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 543 cfcs_max_sense) { 544 ccb->csio.sense_resid = ccb->csio.sense_len - 545 cfcs_max_sense; 546 } 547 break; 548 case CTL_CMD_ABORTED: 549 ccb->ccb_h.status = CAM_REQ_ABORTED; 550 break; 551 case CTL_ERROR: 552 default: 553 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 554 break; 555 } 556 557 mtx_lock(sim->mtx); 558 xpt_done(ccb); 559 mtx_unlock(sim->mtx); 560 561 ctl_free_io(io); 562} 563 564void 565cfcs_action(struct cam_sim *sim, union ccb *ccb) 566{ 567 struct cfcs_softc *softc; 568 int err; 569 570 softc = (struct cfcs_softc *)cam_sim_softc(sim); 571 mtx_assert(&softc->lock, MA_OWNED); 572 573 switch (ccb->ccb_h.func_code) { 574 case XPT_SCSI_IO: { 575 union ctl_io *io; 576 struct ccb_scsiio *csio; 577 578 csio = &ccb->csio; 579 580 /* 581 * Catch CCB flags, like physical address flags, that 582 * indicate situations we currently can't handle. 583 */ 584 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 585 ccb->ccb_h.status = CAM_REQ_INVALID; 586 printf("%s: bad CCB flags %#x (all flags %#x)\n", 587 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 588 ccb->ccb_h.flags); 589 xpt_done(ccb); 590 return; 591 } 592 593 /* 594 * If we aren't online, there are no devices to see. 595 */ 596 if (softc->online == 0) { 597 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 598 xpt_done(ccb); 599 return; 600 } 601 602 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 603 if (io == NULL) { 604 printf("%s: can't allocate ctl_io\n", __func__); 605 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 606 xpt_freeze_devq(ccb->ccb_h.path, 1); 607 xpt_done(ccb); 608 return; 609 } 610 ctl_zero_io(io); 611 /* Save pointers on both sides */ 612 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 613 ccb->ccb_h.io_ptr = io; 614 615 /* 616 * Only SCSI I/O comes down this path, resets, etc. come 617 * down via the XPT_RESET_BUS/LUN CCBs below. 618 */ 619 io->io_hdr.io_type = CTL_IO_SCSI; 620 io->io_hdr.nexus.initid.id = 1; 621 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 622 /* 623 * XXX KDM how do we handle target IDs? 624 */ 625 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 626 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 627 /* 628 * This tag scheme isn't the best, since we could in theory 629 * have a very long-lived I/O and tag collision, especially 630 * in a high I/O environment. But it should work well 631 * enough for now. Since we're using unsigned ints, 632 * they'll just wrap around. 633 */ 634 io->scsiio.tag_num = softc->cur_tag_num++; 635 csio->tag_id = io->scsiio.tag_num; 636 switch (csio->tag_action) { 637 case CAM_TAG_ACTION_NONE: 638 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 639 break; 640 case MSG_SIMPLE_TASK: 641 io->scsiio.tag_type = CTL_TAG_SIMPLE; 642 break; 643 case MSG_HEAD_OF_QUEUE_TASK: 644 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 645 break; 646 case MSG_ORDERED_TASK: 647 io->scsiio.tag_type = CTL_TAG_ORDERED; 648 break; 649 case MSG_ACA_TASK: 650 io->scsiio.tag_type = CTL_TAG_ACA; 651 break; 652 default: 653 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 654 printf("%s: unhandled tag type %#x!!\n", __func__, 655 csio->tag_action); 656 break; 657 } 658 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 659 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 660 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 661 } 662 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 663 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 664 io->scsiio.cdb_len); 665 666 err = ctl_queue(io); 667 if (err != CTL_RETVAL_COMPLETE) { 668 printf("%s: func %d: error %d returned by " 669 "ctl_queue()!\n", __func__, 670 ccb->ccb_h.func_code, err); 671 ctl_free_io(io); 672 } else { 673 ccb->ccb_h.status |= CAM_SIM_QUEUED; 674 } 675 break; 676 } 677 case XPT_ABORT: { 678 union ctl_io *io; 679 union ccb *abort_ccb; 680 681 abort_ccb = ccb->cab.abort_ccb; 682 683 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 684 ccb->ccb_h.status = CAM_REQ_INVALID; 685 xpt_done(ccb); 686 } 687 688 /* 689 * If we aren't online, there are no devices to talk to. 690 */ 691 if (softc->online == 0) { 692 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 693 xpt_done(ccb); 694 return; 695 } 696 697 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 698 if (io == NULL) { 699 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 700 xpt_freeze_devq(ccb->ccb_h.path, 1); 701 xpt_done(ccb); 702 return; 703 } 704 705 ctl_zero_io(io); 706 /* Save pointers on both sides */ 707 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 708 ccb->ccb_h.io_ptr = io; 709 710 io->io_hdr.io_type = CTL_IO_TASK; 711 io->io_hdr.nexus.initid.id = 1; 712 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 713 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 714 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 715 io->taskio.task_action = CTL_TASK_ABORT_TASK; 716 io->taskio.tag_num = abort_ccb->csio.tag_id; 717 switch (abort_ccb->csio.tag_action) { 718 case CAM_TAG_ACTION_NONE: 719 io->taskio.tag_type = CTL_TAG_UNTAGGED; 720 break; 721 case MSG_SIMPLE_TASK: 722 io->taskio.tag_type = CTL_TAG_SIMPLE; 723 break; 724 case MSG_HEAD_OF_QUEUE_TASK: 725 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 726 break; 727 case MSG_ORDERED_TASK: 728 io->taskio.tag_type = CTL_TAG_ORDERED; 729 break; 730 case MSG_ACA_TASK: 731 io->taskio.tag_type = CTL_TAG_ACA; 732 break; 733 default: 734 io->taskio.tag_type = CTL_TAG_UNTAGGED; 735 printf("%s: unhandled tag type %#x!!\n", __func__, 736 abort_ccb->csio.tag_action); 737 break; 738 } 739 err = ctl_queue(io); 740 if (err != CTL_RETVAL_COMPLETE) { 741 printf("%s func %d: error %d returned by " 742 "ctl_queue()!\n", __func__, 743 ccb->ccb_h.func_code, err); 744 ctl_free_io(io); 745 } 746 break; 747 } 748 case XPT_GET_TRAN_SETTINGS: { 749 struct ccb_trans_settings *cts; 750 struct ccb_trans_settings_scsi *scsi; 751 struct ccb_trans_settings_fc *fc; 752 753 cts = &ccb->cts; 754 scsi = &cts->proto_specific.scsi; 755 fc = &cts->xport_specific.fc; 756 757 758 cts->protocol = PROTO_SCSI; 759 cts->protocol_version = SCSI_REV_SPC2; 760 cts->transport = XPORT_FC; 761 cts->transport_version = 0; 762 763 scsi->valid = CTS_SCSI_VALID_TQ; 764 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 765 fc->valid = CTS_FC_VALID_SPEED; 766 fc->bitrate = 800000; 767 fc->wwnn = softc->wwnn; 768 fc->wwpn = softc->wwpn; 769 fc->port = softc->fe.targ_port; 770 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 771 CTS_FC_VALID_PORT; 772 ccb->ccb_h.status = CAM_REQ_CMP; 773 break; 774 } 775 case XPT_SET_TRAN_SETTINGS: 776 /* XXX KDM should we actually do something here? */ 777 ccb->ccb_h.status = CAM_REQ_CMP; 778 break; 779 case XPT_RESET_BUS: 780 case XPT_RESET_DEV: { 781 union ctl_io *io; 782 783 /* 784 * If we aren't online, there are no devices to talk to. 785 */ 786 if (softc->online == 0) { 787 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 788 xpt_done(ccb); 789 return; 790 } 791 792 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 793 if (io == NULL) { 794 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 795 xpt_freeze_devq(ccb->ccb_h.path, 1); 796 xpt_done(ccb); 797 return; 798 } 799 800 ctl_zero_io(io); 801 /* Save pointers on both sides */ 802 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 803 ccb->ccb_h.io_ptr = io; 804 805 io->io_hdr.io_type = CTL_IO_TASK; 806 io->io_hdr.nexus.initid.id = 0; 807 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 808 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 809 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 810 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 811 io->taskio.task_action = CTL_TASK_BUS_RESET; 812 else 813 io->taskio.task_action = CTL_TASK_LUN_RESET; 814 815 err = ctl_queue(io); 816 if (err != CTL_RETVAL_COMPLETE) { 817 printf("%s func %d: error %d returned by " 818 "ctl_queue()!\n", __func__, 819 ccb->ccb_h.func_code, err); 820 ctl_free_io(io); 821 } 822 break; 823 } 824 case XPT_CALC_GEOMETRY: 825 cam_calc_geometry(&ccb->ccg, 1); 826 xpt_done(ccb); 827 break; 828 case XPT_PATH_INQ: { 829 struct ccb_pathinq *cpi; 830 831 cpi = &ccb->cpi; 832 833 cpi->version_num = 0; 834 cpi->hba_inquiry = PI_TAG_ABLE; 835 cpi->target_sprt = 0; 836 cpi->hba_misc = 0; 837 cpi->hba_eng_cnt = 0; 838 cpi->max_target = 1; 839 cpi->max_lun = 1024; 840 /* Do we really have a limit? */ 841 cpi->maxio = 1024 * 1024; 842 cpi->async_flags = 0; 843 cpi->hpath_id = 0; 844 cpi->initiator_id = 0; 845 846 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 847 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 848 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 849 cpi->unit_number = 0; 850 cpi->bus_id = 0; 851 cpi->base_transfer_speed = 800000; 852 cpi->protocol = PROTO_SCSI; 853 cpi->protocol_version = SCSI_REV_SPC2; 854 /* 855 * Pretend to be Fibre Channel. 856 */ 857 cpi->transport = XPORT_FC; 858 cpi->transport_version = 0; 859 cpi->xport_specific.fc.wwnn = softc->wwnn; 860 cpi->xport_specific.fc.wwpn = softc->wwpn; 861 cpi->xport_specific.fc.port = softc->fe.targ_port; 862 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 863 cpi->ccb_h.status = CAM_REQ_CMP; 864 break; 865 } 866 default: 867 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 868 printf("%s: unsupported CCB type %#x\n", __func__, 869 ccb->ccb_h.func_code); 870 xpt_done(ccb); 871 break; 872 } 873} 874 875static void 876cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 877{ 878 879} 880