ctl_frontend_cam_sim.c revision 288724
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: stable/10/sys/cam/ctl/ctl_frontend_cam_sim.c 288724 2015-10-05 08:47:45Z mav $"); 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_debug.h> 68 69#define io_ptr spriv_ptr1 70 71struct cfcs_io { 72 union ccb *ccb; 73}; 74 75struct cfcs_softc { 76 struct ctl_port port; 77 char port_name[32]; 78 struct cam_sim *sim; 79 struct cam_devq *devq; 80 struct cam_path *path; 81 struct mtx lock; 82 uint64_t wwnn; 83 uint64_t wwpn; 84 uint32_t cur_tag_num; 85 int online; 86}; 87 88/* 89 * We can't handle CCBs with these flags. For the most part, we just don't 90 * handle physical addresses yet. That would require mapping things in 91 * order to do the copy. 92 */ 93#define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 94 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 95 CAM_SENSE_PHYS) 96 97int cfcs_init(void); 98static void cfcs_poll(struct cam_sim *sim); 99static void cfcs_online(void *arg); 100static void cfcs_offline(void *arg); 101static void cfcs_datamove(union ctl_io *io); 102static void cfcs_done(union ctl_io *io); 103void cfcs_action(struct cam_sim *sim, union ccb *ccb); 104static void cfcs_async(void *callback_arg, uint32_t code, 105 struct cam_path *path, void *arg); 106 107struct cfcs_softc cfcs_softc; 108/* 109 * This is primarly intended to allow for error injection to test the CAM 110 * sense data and sense residual handling code. This sets the maximum 111 * amount of SCSI sense data that we will report to CAM. 112 */ 113static int cfcs_max_sense = sizeof(struct scsi_sense_data); 114 115SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 116 "CAM Target Layer SIM frontend"); 117SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 118 &cfcs_max_sense, 0, "Maximum sense data size"); 119 120static struct ctl_frontend cfcs_frontend = 121{ 122 .name = "camsim", 123 .init = cfcs_init, 124}; 125CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 126 127int 128cfcs_init(void) 129{ 130 struct cfcs_softc *softc; 131 struct ccb_setasync csa; 132 struct ctl_port *port; 133#ifdef NEEDTOPORT 134 char wwnn[8]; 135#endif 136 int retval; 137 138 softc = &cfcs_softc; 139 retval = 0; 140 bzero(softc, sizeof(*softc)); 141 mtx_init(&softc->lock, "ctl2cam", NULL, MTX_DEF); 142 port = &softc->port; 143 144 port->frontend = &cfcs_frontend; 145 port->port_type = CTL_PORT_INTERNAL; 146 /* XXX KDM what should the real number be here? */ 147 port->num_requested_ctl_io = 4096; 148 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 149 port->port_name = softc->port_name; 150 port->port_online = cfcs_online; 151 port->port_offline = cfcs_offline; 152 port->onoff_arg = softc; 153 port->fe_datamove = cfcs_datamove; 154 port->fe_done = cfcs_done; 155 156 /* XXX KDM what should we report here? */ 157 /* XXX These should probably be fetched from CTL. */ 158 port->max_targets = 1; 159 port->max_target_id = 15; 160 161 retval = ctl_port_register(port); 162 if (retval != 0) { 163 printf("%s: ctl_port_register() failed with error %d!\n", 164 __func__, retval); 165 mtx_destroy(&softc->lock); 166 return (retval); 167 } 168 169 /* 170 * Get the WWNN out of the database, and create a WWPN as well. 171 */ 172#ifdef NEEDTOPORT 173 ddb_GetWWNN((char *)wwnn); 174 softc->wwnn = be64dec(wwnn); 175 softc->wwpn = softc->wwnn + (softc->port.targ_port & 0xff); 176#endif 177 178 /* 179 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 180 * ahead and set something random. 181 */ 182 if (port->wwnn == 0) { 183 uint64_t random_bits; 184 185 arc4rand(&random_bits, sizeof(random_bits), 0); 186 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 187 /* Company ID */ 0x5000000000000000ULL | 188 /* NL-Port */ 0x0300; 189 softc->wwpn = softc->wwnn + port->targ_port + 1; 190 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 191 } else { 192 softc->wwnn = port->wwnn; 193 softc->wwpn = port->wwpn; 194 } 195 196 mtx_lock(&softc->lock); 197 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 198 if (softc->devq == NULL) { 199 printf("%s: error allocating devq\n", __func__); 200 retval = ENOMEM; 201 goto bailout; 202 } 203 204 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 205 softc, /*unit*/ 0, &softc->lock, 1, 206 port->num_requested_ctl_io, softc->devq); 207 if (softc->sim == NULL) { 208 printf("%s: error allocating SIM\n", __func__); 209 retval = ENOMEM; 210 goto bailout; 211 } 212 213 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 214 printf("%s: error registering SIM\n", __func__); 215 retval = ENOMEM; 216 goto bailout; 217 } 218 219 if (xpt_create_path(&softc->path, /*periph*/NULL, 220 cam_sim_path(softc->sim), 221 CAM_TARGET_WILDCARD, 222 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 223 printf("%s: error creating path\n", __func__); 224 xpt_bus_deregister(cam_sim_path(softc->sim)); 225 retval = EINVAL; 226 goto bailout; 227 } 228 229 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 230 csa.ccb_h.func_code = XPT_SASYNC_CB; 231 csa.event_enable = AC_LOST_DEVICE; 232 csa.callback = cfcs_async; 233 csa.callback_arg = softc->sim; 234 xpt_action((union ccb *)&csa); 235 236 mtx_unlock(&softc->lock); 237 238 return (retval); 239 240bailout: 241 if (softc->sim) 242 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 243 else if (softc->devq) 244 cam_simq_free(softc->devq); 245 mtx_unlock(&softc->lock); 246 mtx_destroy(&softc->lock); 247 248 return (retval); 249} 250 251static void 252cfcs_poll(struct cam_sim *sim) 253{ 254 255} 256 257static void 258cfcs_onoffline(void *arg, int online) 259{ 260 struct cfcs_softc *softc; 261 union ccb *ccb; 262 263 softc = (struct cfcs_softc *)arg; 264 265 mtx_lock(&softc->lock); 266 softc->online = online; 267 268 ccb = xpt_alloc_ccb_nowait(); 269 if (ccb == NULL) { 270 printf("%s: unable to allocate CCB for rescan\n", __func__); 271 goto bailout; 272 } 273 274 if (xpt_create_path(&ccb->ccb_h.path, NULL, 275 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 276 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 277 printf("%s: can't allocate path for rescan\n", __func__); 278 xpt_free_ccb(ccb); 279 goto bailout; 280 } 281 xpt_rescan(ccb); 282 283bailout: 284 mtx_unlock(&softc->lock); 285} 286 287static void 288cfcs_online(void *arg) 289{ 290 cfcs_onoffline(arg, /*online*/ 1); 291} 292 293static void 294cfcs_offline(void *arg) 295{ 296 cfcs_onoffline(arg, /*online*/ 0); 297} 298 299/* 300 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 301 * way to combine the functionality? 302 * 303 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 304 * caller's context, which will usually be the backend. That may not be a 305 * good thing. 306 */ 307static void 308cfcs_datamove(union ctl_io *io) 309{ 310 union ccb *ccb; 311 bus_dma_segment_t cam_sg_entry, *cam_sglist; 312 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 313 int cam_sg_count, ctl_sg_count, cam_sg_start; 314 int cam_sg_offset; 315 int len_to_copy, len_copied; 316 int ctl_watermark, cam_watermark; 317 int i, j; 318 319 320 cam_sg_offset = 0; 321 cam_sg_start = 0; 322 323 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 324 325 /* 326 * Note that we have a check in cfcs_action() to make sure that any 327 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 328 * is just to make sure no one removes that check without updating 329 * this code to provide the additional functionality necessary to 330 * support those modes of operation. 331 */ 332 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 333 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 334 335 /* 336 * Simplify things on both sides by putting single buffers into a 337 * single entry S/G list. 338 */ 339 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 340 case CAM_DATA_SG: { 341 int len_seen; 342 343 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 344 cam_sg_count = ccb->csio.sglist_cnt; 345 346 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 347 if ((len_seen + cam_sglist[i].ds_len) >= 348 io->scsiio.kern_rel_offset) { 349 cam_sg_start = i; 350 cam_sg_offset = io->scsiio.kern_rel_offset - 351 len_seen; 352 break; 353 } 354 len_seen += cam_sglist[i].ds_len; 355 } 356 break; 357 } 358 case CAM_DATA_VADDR: 359 cam_sglist = &cam_sg_entry; 360 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 361 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 362 cam_sg_count = 1; 363 cam_sg_start = 0; 364 cam_sg_offset = io->scsiio.kern_rel_offset; 365 break; 366 default: 367 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 368 } 369 370 if (io->scsiio.kern_sg_entries > 0) { 371 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 372 ctl_sg_count = io->scsiio.kern_sg_entries; 373 } else { 374 ctl_sglist = &ctl_sg_entry; 375 ctl_sglist->addr = io->scsiio.kern_data_ptr; 376 ctl_sglist->len = io->scsiio.kern_data_len; 377 ctl_sg_count = 1; 378 } 379 380 ctl_watermark = 0; 381 cam_watermark = cam_sg_offset; 382 len_copied = 0; 383 for (i = cam_sg_start, j = 0; 384 i < cam_sg_count && j < ctl_sg_count;) { 385 uint8_t *cam_ptr, *ctl_ptr; 386 387 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 388 ctl_sglist[j].len - ctl_watermark); 389 390 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 391 cam_ptr = cam_ptr + cam_watermark; 392 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 393 /* 394 * XXX KDM fix this! 395 */ 396 panic("need to implement bus address support"); 397#if 0 398 kern_ptr = bus_to_virt(kern_sglist[j].addr); 399#endif 400 } else 401 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 402 ctl_ptr = ctl_ptr + ctl_watermark; 403 404 ctl_watermark += len_to_copy; 405 cam_watermark += len_to_copy; 406 407 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 408 CTL_FLAG_DATA_IN) { 409 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 410 __func__, len_to_copy)); 411 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 412 __func__, cam_ptr)); 413 bcopy(ctl_ptr, cam_ptr, len_to_copy); 414 } else { 415 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 416 __func__, len_to_copy)); 417 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 418 __func__, ctl_ptr)); 419 bcopy(cam_ptr, ctl_ptr, len_to_copy); 420 } 421 422 len_copied += len_to_copy; 423 424 if (cam_sglist[i].ds_len == cam_watermark) { 425 i++; 426 cam_watermark = 0; 427 } 428 429 if (ctl_sglist[j].len == ctl_watermark) { 430 j++; 431 ctl_watermark = 0; 432 } 433 } 434 435 io->scsiio.ext_data_filled += len_copied; 436 437 io->scsiio.be_move_done(io); 438} 439 440static void 441cfcs_done(union ctl_io *io) 442{ 443 union ccb *ccb; 444 445 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 446 if (ccb == NULL) { 447 ctl_free_io(io); 448 return; 449 } 450 451 /* 452 * At this point we should have status. If we don't, that's a bug. 453 */ 454 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 455 ("invalid CTL status %#x", io->io_hdr.status)); 456 457 /* 458 * Translate CTL status to CAM status. 459 */ 460 switch (io->io_hdr.status & CTL_STATUS_MASK) { 461 case CTL_SUCCESS: 462 ccb->ccb_h.status = CAM_REQ_CMP; 463 break; 464 case CTL_SCSI_ERROR: 465 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 466 ccb->csio.scsi_status = io->scsiio.scsi_status; 467 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 468 min(io->scsiio.sense_len, ccb->csio.sense_len)); 469 if (ccb->csio.sense_len > io->scsiio.sense_len) 470 ccb->csio.sense_resid = ccb->csio.sense_len - 471 io->scsiio.sense_len; 472 else 473 ccb->csio.sense_resid = 0; 474 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 475 cfcs_max_sense) { 476 ccb->csio.sense_resid = ccb->csio.sense_len - 477 cfcs_max_sense; 478 } 479 break; 480 case CTL_CMD_ABORTED: 481 ccb->ccb_h.status = CAM_REQ_ABORTED; 482 break; 483 case CTL_ERROR: 484 default: 485 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 486 break; 487 } 488 489 xpt_done(ccb); 490 ctl_free_io(io); 491} 492 493void 494cfcs_action(struct cam_sim *sim, union ccb *ccb) 495{ 496 struct cfcs_softc *softc; 497 int err; 498 499 softc = (struct cfcs_softc *)cam_sim_softc(sim); 500 mtx_assert(&softc->lock, MA_OWNED); 501 502 switch (ccb->ccb_h.func_code) { 503 case XPT_SCSI_IO: { 504 union ctl_io *io; 505 struct ccb_scsiio *csio; 506 507 csio = &ccb->csio; 508 509 /* 510 * Catch CCB flags, like physical address flags, that 511 * indicate situations we currently can't handle. 512 */ 513 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 514 ccb->ccb_h.status = CAM_REQ_INVALID; 515 printf("%s: bad CCB flags %#x (all flags %#x)\n", 516 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 517 ccb->ccb_h.flags); 518 xpt_done(ccb); 519 return; 520 } 521 522 /* 523 * If we aren't online, there are no devices to see. 524 */ 525 if (softc->online == 0) { 526 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 527 xpt_done(ccb); 528 return; 529 } 530 531 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 532 if (io == NULL) { 533 printf("%s: can't allocate ctl_io\n", __func__); 534 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 535 xpt_freeze_devq(ccb->ccb_h.path, 1); 536 xpt_done(ccb); 537 return; 538 } 539 ctl_zero_io(io); 540 /* Save pointers on both sides */ 541 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 542 ccb->ccb_h.io_ptr = io; 543 544 /* 545 * Only SCSI I/O comes down this path, resets, etc. come 546 * down via the XPT_RESET_BUS/LUN CCBs below. 547 */ 548 io->io_hdr.io_type = CTL_IO_SCSI; 549 io->io_hdr.nexus.initid.id = 1; 550 io->io_hdr.nexus.targ_port = softc->port.targ_port; 551 /* 552 * XXX KDM how do we handle target IDs? 553 */ 554 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 555 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 556 /* 557 * This tag scheme isn't the best, since we could in theory 558 * have a very long-lived I/O and tag collision, especially 559 * in a high I/O environment. But it should work well 560 * enough for now. Since we're using unsigned ints, 561 * they'll just wrap around. 562 */ 563 io->scsiio.tag_num = softc->cur_tag_num++; 564 csio->tag_id = io->scsiio.tag_num; 565 switch (csio->tag_action) { 566 case CAM_TAG_ACTION_NONE: 567 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 568 break; 569 case MSG_SIMPLE_TASK: 570 io->scsiio.tag_type = CTL_TAG_SIMPLE; 571 break; 572 case MSG_HEAD_OF_QUEUE_TASK: 573 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 574 break; 575 case MSG_ORDERED_TASK: 576 io->scsiio.tag_type = CTL_TAG_ORDERED; 577 break; 578 case MSG_ACA_TASK: 579 io->scsiio.tag_type = CTL_TAG_ACA; 580 break; 581 default: 582 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 583 printf("%s: unhandled tag type %#x!!\n", __func__, 584 csio->tag_action); 585 break; 586 } 587 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 588 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 589 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 590 } 591 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 592 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 593 io->scsiio.cdb_len); 594 595 ccb->ccb_h.status |= CAM_SIM_QUEUED; 596 err = ctl_queue(io); 597 if (err != CTL_RETVAL_COMPLETE) { 598 printf("%s: func %d: error %d returned by " 599 "ctl_queue()!\n", __func__, 600 ccb->ccb_h.func_code, err); 601 ctl_free_io(io); 602 ccb->ccb_h.status = CAM_REQ_INVALID; 603 xpt_done(ccb); 604 return; 605 } 606 break; 607 } 608 case XPT_ABORT: { 609 union ctl_io *io; 610 union ccb *abort_ccb; 611 612 abort_ccb = ccb->cab.abort_ccb; 613 614 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 615 ccb->ccb_h.status = CAM_REQ_INVALID; 616 xpt_done(ccb); 617 } 618 619 /* 620 * If we aren't online, there are no devices to talk to. 621 */ 622 if (softc->online == 0) { 623 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 624 xpt_done(ccb); 625 return; 626 } 627 628 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 629 if (io == NULL) { 630 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 631 xpt_freeze_devq(ccb->ccb_h.path, 1); 632 xpt_done(ccb); 633 return; 634 } 635 636 ctl_zero_io(io); 637 /* Save pointers on both sides */ 638 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 639 ccb->ccb_h.io_ptr = io; 640 641 io->io_hdr.io_type = CTL_IO_TASK; 642 io->io_hdr.nexus.initid.id = 1; 643 io->io_hdr.nexus.targ_port = softc->port.targ_port; 644 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 645 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 646 io->taskio.task_action = CTL_TASK_ABORT_TASK; 647 io->taskio.tag_num = abort_ccb->csio.tag_id; 648 switch (abort_ccb->csio.tag_action) { 649 case CAM_TAG_ACTION_NONE: 650 io->taskio.tag_type = CTL_TAG_UNTAGGED; 651 break; 652 case MSG_SIMPLE_TASK: 653 io->taskio.tag_type = CTL_TAG_SIMPLE; 654 break; 655 case MSG_HEAD_OF_QUEUE_TASK: 656 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 657 break; 658 case MSG_ORDERED_TASK: 659 io->taskio.tag_type = CTL_TAG_ORDERED; 660 break; 661 case MSG_ACA_TASK: 662 io->taskio.tag_type = CTL_TAG_ACA; 663 break; 664 default: 665 io->taskio.tag_type = CTL_TAG_UNTAGGED; 666 printf("%s: unhandled tag type %#x!!\n", __func__, 667 abort_ccb->csio.tag_action); 668 break; 669 } 670 err = ctl_queue(io); 671 if (err != CTL_RETVAL_COMPLETE) { 672 printf("%s func %d: error %d returned by " 673 "ctl_queue()!\n", __func__, 674 ccb->ccb_h.func_code, err); 675 ctl_free_io(io); 676 } 677 break; 678 } 679 case XPT_GET_TRAN_SETTINGS: { 680 struct ccb_trans_settings *cts; 681 struct ccb_trans_settings_scsi *scsi; 682 struct ccb_trans_settings_fc *fc; 683 684 cts = &ccb->cts; 685 scsi = &cts->proto_specific.scsi; 686 fc = &cts->xport_specific.fc; 687 688 689 cts->protocol = PROTO_SCSI; 690 cts->protocol_version = SCSI_REV_SPC2; 691 cts->transport = XPORT_FC; 692 cts->transport_version = 0; 693 694 scsi->valid = CTS_SCSI_VALID_TQ; 695 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 696 fc->valid = CTS_FC_VALID_SPEED; 697 fc->bitrate = 800000; 698 fc->wwnn = softc->wwnn; 699 fc->wwpn = softc->wwpn; 700 fc->port = softc->port.targ_port; 701 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 702 CTS_FC_VALID_PORT; 703 ccb->ccb_h.status = CAM_REQ_CMP; 704 break; 705 } 706 case XPT_SET_TRAN_SETTINGS: 707 /* XXX KDM should we actually do something here? */ 708 ccb->ccb_h.status = CAM_REQ_CMP; 709 break; 710 case XPT_RESET_BUS: 711 case XPT_RESET_DEV: { 712 union ctl_io *io; 713 714 /* 715 * If we aren't online, there are no devices to talk to. 716 */ 717 if (softc->online == 0) { 718 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 719 xpt_done(ccb); 720 return; 721 } 722 723 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 724 if (io == NULL) { 725 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 726 xpt_freeze_devq(ccb->ccb_h.path, 1); 727 xpt_done(ccb); 728 return; 729 } 730 731 ctl_zero_io(io); 732 /* Save pointers on both sides */ 733 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 734 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 735 ccb->ccb_h.io_ptr = io; 736 737 io->io_hdr.io_type = CTL_IO_TASK; 738 io->io_hdr.nexus.initid.id = 0; 739 io->io_hdr.nexus.targ_port = softc->port.targ_port; 740 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 741 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 742 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 743 io->taskio.task_action = CTL_TASK_BUS_RESET; 744 else 745 io->taskio.task_action = CTL_TASK_LUN_RESET; 746 747 err = ctl_queue(io); 748 if (err != CTL_RETVAL_COMPLETE) { 749 printf("%s func %d: error %d returned by " 750 "ctl_queue()!\n", __func__, 751 ccb->ccb_h.func_code, err); 752 ctl_free_io(io); 753 } 754 break; 755 } 756 case XPT_CALC_GEOMETRY: 757 cam_calc_geometry(&ccb->ccg, 1); 758 xpt_done(ccb); 759 break; 760 case XPT_PATH_INQ: { 761 struct ccb_pathinq *cpi; 762 763 cpi = &ccb->cpi; 764 765 cpi->version_num = 0; 766 cpi->hba_inquiry = PI_TAG_ABLE; 767 cpi->target_sprt = 0; 768 cpi->hba_misc = 0; 769 cpi->hba_eng_cnt = 0; 770 cpi->max_target = 1; 771 cpi->max_lun = 1024; 772 /* Do we really have a limit? */ 773 cpi->maxio = 1024 * 1024; 774 cpi->async_flags = 0; 775 cpi->hpath_id = 0; 776 cpi->initiator_id = 0; 777 778 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 779 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 780 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 781 cpi->unit_number = 0; 782 cpi->bus_id = 0; 783 cpi->base_transfer_speed = 800000; 784 cpi->protocol = PROTO_SCSI; 785 cpi->protocol_version = SCSI_REV_SPC2; 786 /* 787 * Pretend to be Fibre Channel. 788 */ 789 cpi->transport = XPORT_FC; 790 cpi->transport_version = 0; 791 cpi->xport_specific.fc.wwnn = softc->wwnn; 792 cpi->xport_specific.fc.wwpn = softc->wwpn; 793 cpi->xport_specific.fc.port = softc->port.targ_port; 794 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 795 cpi->ccb_h.status = CAM_REQ_CMP; 796 break; 797 } 798 default: 799 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 800 printf("%s: unsupported CCB type %#x\n", __func__, 801 ccb->ccb_h.func_code); 802 xpt_done(ccb); 803 break; 804 } 805} 806 807static void 808cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 809{ 810 811} 812