ctl_frontend_cam_sim.c revision 288719
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 288719 2015-10-05 08:42:43Z 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 int cfcs_lun_enable(void *arg, int lun_id); 102static int cfcs_lun_disable(void *arg, int lun_id); 103static void cfcs_datamove(union ctl_io *io); 104static void cfcs_done(union ctl_io *io); 105void cfcs_action(struct cam_sim *sim, union ccb *ccb); 106static void cfcs_async(void *callback_arg, uint32_t code, 107 struct cam_path *path, void *arg); 108 109struct cfcs_softc cfcs_softc; 110/* 111 * This is primarly intended to allow for error injection to test the CAM 112 * sense data and sense residual handling code. This sets the maximum 113 * amount of SCSI sense data that we will report to CAM. 114 */ 115static int cfcs_max_sense = sizeof(struct scsi_sense_data); 116 117SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 118 "CAM Target Layer SIM frontend"); 119SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 120 &cfcs_max_sense, 0, "Maximum sense data size"); 121 122static struct ctl_frontend cfcs_frontend = 123{ 124 .name = "camsim", 125 .init = cfcs_init, 126}; 127CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 128 129int 130cfcs_init(void) 131{ 132 struct cfcs_softc *softc; 133 struct ccb_setasync csa; 134 struct ctl_port *port; 135#ifdef NEEDTOPORT 136 char wwnn[8]; 137#endif 138 int retval; 139 140 softc = &cfcs_softc; 141 retval = 0; 142 bzero(softc, sizeof(*softc)); 143 mtx_init(&softc->lock, "ctl2cam", NULL, MTX_DEF); 144 port = &softc->port; 145 146 port->frontend = &cfcs_frontend; 147 port->port_type = CTL_PORT_INTERNAL; 148 /* XXX KDM what should the real number be here? */ 149 port->num_requested_ctl_io = 4096; 150 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 151 port->port_name = softc->port_name; 152 port->port_online = cfcs_online; 153 port->port_offline = cfcs_offline; 154 port->onoff_arg = softc; 155 port->lun_enable = cfcs_lun_enable; 156 port->lun_disable = cfcs_lun_disable; 157 port->targ_lun_arg = softc; 158 port->fe_datamove = cfcs_datamove; 159 port->fe_done = cfcs_done; 160 161 /* XXX KDM what should we report here? */ 162 /* XXX These should probably be fetched from CTL. */ 163 port->max_targets = 1; 164 port->max_target_id = 15; 165 166 retval = ctl_port_register(port); 167 if (retval != 0) { 168 printf("%s: ctl_port_register() failed with error %d!\n", 169 __func__, retval); 170 mtx_destroy(&softc->lock); 171 return (retval); 172 } 173 174 /* 175 * Get the WWNN out of the database, and create a WWPN as well. 176 */ 177#ifdef NEEDTOPORT 178 ddb_GetWWNN((char *)wwnn); 179 softc->wwnn = be64dec(wwnn); 180 softc->wwpn = softc->wwnn + (softc->port.targ_port & 0xff); 181#endif 182 183 /* 184 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 185 * ahead and set something random. 186 */ 187 if (port->wwnn == 0) { 188 uint64_t random_bits; 189 190 arc4rand(&random_bits, sizeof(random_bits), 0); 191 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 192 /* Company ID */ 0x5000000000000000ULL | 193 /* NL-Port */ 0x0300; 194 softc->wwpn = softc->wwnn + port->targ_port + 1; 195 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 196 } else { 197 softc->wwnn = port->wwnn; 198 softc->wwpn = port->wwpn; 199 } 200 201 mtx_lock(&softc->lock); 202 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 203 if (softc->devq == NULL) { 204 printf("%s: error allocating devq\n", __func__); 205 retval = ENOMEM; 206 goto bailout; 207 } 208 209 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 210 softc, /*unit*/ 0, &softc->lock, 1, 211 port->num_requested_ctl_io, softc->devq); 212 if (softc->sim == NULL) { 213 printf("%s: error allocating SIM\n", __func__); 214 retval = ENOMEM; 215 goto bailout; 216 } 217 218 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 219 printf("%s: error registering SIM\n", __func__); 220 retval = ENOMEM; 221 goto bailout; 222 } 223 224 if (xpt_create_path(&softc->path, /*periph*/NULL, 225 cam_sim_path(softc->sim), 226 CAM_TARGET_WILDCARD, 227 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 228 printf("%s: error creating path\n", __func__); 229 xpt_bus_deregister(cam_sim_path(softc->sim)); 230 retval = EINVAL; 231 goto bailout; 232 } 233 234 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 235 csa.ccb_h.func_code = XPT_SASYNC_CB; 236 csa.event_enable = AC_LOST_DEVICE; 237 csa.callback = cfcs_async; 238 csa.callback_arg = softc->sim; 239 xpt_action((union ccb *)&csa); 240 241 mtx_unlock(&softc->lock); 242 243 return (retval); 244 245bailout: 246 if (softc->sim) 247 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 248 else if (softc->devq) 249 cam_simq_free(softc->devq); 250 mtx_unlock(&softc->lock); 251 mtx_destroy(&softc->lock); 252 253 return (retval); 254} 255 256static void 257cfcs_poll(struct cam_sim *sim) 258{ 259 260} 261 262static void 263cfcs_onoffline(void *arg, int online) 264{ 265 struct cfcs_softc *softc; 266 union ccb *ccb; 267 268 softc = (struct cfcs_softc *)arg; 269 270 mtx_lock(&softc->lock); 271 softc->online = online; 272 273 ccb = xpt_alloc_ccb_nowait(); 274 if (ccb == NULL) { 275 printf("%s: unable to allocate CCB for rescan\n", __func__); 276 goto bailout; 277 } 278 279 if (xpt_create_path(&ccb->ccb_h.path, NULL, 280 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 281 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 282 printf("%s: can't allocate path for rescan\n", __func__); 283 xpt_free_ccb(ccb); 284 goto bailout; 285 } 286 xpt_rescan(ccb); 287 288bailout: 289 mtx_unlock(&softc->lock); 290} 291 292static void 293cfcs_online(void *arg) 294{ 295 cfcs_onoffline(arg, /*online*/ 1); 296} 297 298static void 299cfcs_offline(void *arg) 300{ 301 cfcs_onoffline(arg, /*online*/ 0); 302} 303 304static int 305cfcs_lun_enable(void *arg, int lun_id) 306{ 307 return (0); 308} 309static int 310cfcs_lun_disable(void *arg, int lun_id) 311{ 312 return (0); 313} 314 315/* 316 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 317 * way to combine the functionality? 318 * 319 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 320 * caller's context, which will usually be the backend. That may not be a 321 * good thing. 322 */ 323static void 324cfcs_datamove(union ctl_io *io) 325{ 326 union ccb *ccb; 327 bus_dma_segment_t cam_sg_entry, *cam_sglist; 328 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 329 int cam_sg_count, ctl_sg_count, cam_sg_start; 330 int cam_sg_offset; 331 int len_to_copy, len_copied; 332 int ctl_watermark, cam_watermark; 333 int i, j; 334 335 336 cam_sg_offset = 0; 337 cam_sg_start = 0; 338 339 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 340 341 /* 342 * Note that we have a check in cfcs_action() to make sure that any 343 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 344 * is just to make sure no one removes that check without updating 345 * this code to provide the additional functionality necessary to 346 * support those modes of operation. 347 */ 348 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 349 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 350 351 /* 352 * Simplify things on both sides by putting single buffers into a 353 * single entry S/G list. 354 */ 355 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 356 case CAM_DATA_SG: { 357 int len_seen; 358 359 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 360 cam_sg_count = ccb->csio.sglist_cnt; 361 362 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 363 if ((len_seen + cam_sglist[i].ds_len) >= 364 io->scsiio.kern_rel_offset) { 365 cam_sg_start = i; 366 cam_sg_offset = io->scsiio.kern_rel_offset - 367 len_seen; 368 break; 369 } 370 len_seen += cam_sglist[i].ds_len; 371 } 372 break; 373 } 374 case CAM_DATA_VADDR: 375 cam_sglist = &cam_sg_entry; 376 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 377 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 378 cam_sg_count = 1; 379 cam_sg_start = 0; 380 cam_sg_offset = io->scsiio.kern_rel_offset; 381 break; 382 default: 383 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 384 } 385 386 if (io->scsiio.kern_sg_entries > 0) { 387 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 388 ctl_sg_count = io->scsiio.kern_sg_entries; 389 } else { 390 ctl_sglist = &ctl_sg_entry; 391 ctl_sglist->addr = io->scsiio.kern_data_ptr; 392 ctl_sglist->len = io->scsiio.kern_data_len; 393 ctl_sg_count = 1; 394 } 395 396 ctl_watermark = 0; 397 cam_watermark = cam_sg_offset; 398 len_copied = 0; 399 for (i = cam_sg_start, j = 0; 400 i < cam_sg_count && j < ctl_sg_count;) { 401 uint8_t *cam_ptr, *ctl_ptr; 402 403 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 404 ctl_sglist[j].len - ctl_watermark); 405 406 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 407 cam_ptr = cam_ptr + cam_watermark; 408 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 409 /* 410 * XXX KDM fix this! 411 */ 412 panic("need to implement bus address support"); 413#if 0 414 kern_ptr = bus_to_virt(kern_sglist[j].addr); 415#endif 416 } else 417 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 418 ctl_ptr = ctl_ptr + ctl_watermark; 419 420 ctl_watermark += len_to_copy; 421 cam_watermark += len_to_copy; 422 423 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 424 CTL_FLAG_DATA_IN) { 425 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 426 __func__, len_to_copy)); 427 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 428 __func__, cam_ptr)); 429 bcopy(ctl_ptr, cam_ptr, len_to_copy); 430 } else { 431 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 432 __func__, len_to_copy)); 433 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 434 __func__, ctl_ptr)); 435 bcopy(cam_ptr, ctl_ptr, len_to_copy); 436 } 437 438 len_copied += len_to_copy; 439 440 if (cam_sglist[i].ds_len == cam_watermark) { 441 i++; 442 cam_watermark = 0; 443 } 444 445 if (ctl_sglist[j].len == ctl_watermark) { 446 j++; 447 ctl_watermark = 0; 448 } 449 } 450 451 io->scsiio.ext_data_filled += len_copied; 452 453 io->scsiio.be_move_done(io); 454} 455 456static void 457cfcs_done(union ctl_io *io) 458{ 459 union ccb *ccb; 460 461 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 462 if (ccb == NULL) { 463 ctl_free_io(io); 464 return; 465 } 466 467 /* 468 * At this point we should have status. If we don't, that's a bug. 469 */ 470 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 471 ("invalid CTL status %#x", io->io_hdr.status)); 472 473 /* 474 * Translate CTL status to CAM status. 475 */ 476 switch (io->io_hdr.status & CTL_STATUS_MASK) { 477 case CTL_SUCCESS: 478 ccb->ccb_h.status = CAM_REQ_CMP; 479 break; 480 case CTL_SCSI_ERROR: 481 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 482 ccb->csio.scsi_status = io->scsiio.scsi_status; 483 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 484 min(io->scsiio.sense_len, ccb->csio.sense_len)); 485 if (ccb->csio.sense_len > io->scsiio.sense_len) 486 ccb->csio.sense_resid = ccb->csio.sense_len - 487 io->scsiio.sense_len; 488 else 489 ccb->csio.sense_resid = 0; 490 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 491 cfcs_max_sense) { 492 ccb->csio.sense_resid = ccb->csio.sense_len - 493 cfcs_max_sense; 494 } 495 break; 496 case CTL_CMD_ABORTED: 497 ccb->ccb_h.status = CAM_REQ_ABORTED; 498 break; 499 case CTL_ERROR: 500 default: 501 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 502 break; 503 } 504 505 xpt_done(ccb); 506 ctl_free_io(io); 507} 508 509void 510cfcs_action(struct cam_sim *sim, union ccb *ccb) 511{ 512 struct cfcs_softc *softc; 513 int err; 514 515 softc = (struct cfcs_softc *)cam_sim_softc(sim); 516 mtx_assert(&softc->lock, MA_OWNED); 517 518 switch (ccb->ccb_h.func_code) { 519 case XPT_SCSI_IO: { 520 union ctl_io *io; 521 struct ccb_scsiio *csio; 522 523 csio = &ccb->csio; 524 525 /* 526 * Catch CCB flags, like physical address flags, that 527 * indicate situations we currently can't handle. 528 */ 529 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 530 ccb->ccb_h.status = CAM_REQ_INVALID; 531 printf("%s: bad CCB flags %#x (all flags %#x)\n", 532 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 533 ccb->ccb_h.flags); 534 xpt_done(ccb); 535 return; 536 } 537 538 /* 539 * If we aren't online, there are no devices to see. 540 */ 541 if (softc->online == 0) { 542 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 543 xpt_done(ccb); 544 return; 545 } 546 547 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 548 if (io == NULL) { 549 printf("%s: can't allocate ctl_io\n", __func__); 550 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 551 xpt_freeze_devq(ccb->ccb_h.path, 1); 552 xpt_done(ccb); 553 return; 554 } 555 ctl_zero_io(io); 556 /* Save pointers on both sides */ 557 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 558 ccb->ccb_h.io_ptr = io; 559 560 /* 561 * Only SCSI I/O comes down this path, resets, etc. come 562 * down via the XPT_RESET_BUS/LUN CCBs below. 563 */ 564 io->io_hdr.io_type = CTL_IO_SCSI; 565 io->io_hdr.nexus.initid.id = 1; 566 io->io_hdr.nexus.targ_port = softc->port.targ_port; 567 /* 568 * XXX KDM how do we handle target IDs? 569 */ 570 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 571 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 572 /* 573 * This tag scheme isn't the best, since we could in theory 574 * have a very long-lived I/O and tag collision, especially 575 * in a high I/O environment. But it should work well 576 * enough for now. Since we're using unsigned ints, 577 * they'll just wrap around. 578 */ 579 io->scsiio.tag_num = softc->cur_tag_num++; 580 csio->tag_id = io->scsiio.tag_num; 581 switch (csio->tag_action) { 582 case CAM_TAG_ACTION_NONE: 583 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 584 break; 585 case MSG_SIMPLE_TASK: 586 io->scsiio.tag_type = CTL_TAG_SIMPLE; 587 break; 588 case MSG_HEAD_OF_QUEUE_TASK: 589 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 590 break; 591 case MSG_ORDERED_TASK: 592 io->scsiio.tag_type = CTL_TAG_ORDERED; 593 break; 594 case MSG_ACA_TASK: 595 io->scsiio.tag_type = CTL_TAG_ACA; 596 break; 597 default: 598 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 599 printf("%s: unhandled tag type %#x!!\n", __func__, 600 csio->tag_action); 601 break; 602 } 603 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 604 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 605 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 606 } 607 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 608 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 609 io->scsiio.cdb_len); 610 611 ccb->ccb_h.status |= CAM_SIM_QUEUED; 612 err = ctl_queue(io); 613 if (err != CTL_RETVAL_COMPLETE) { 614 printf("%s: func %d: error %d returned by " 615 "ctl_queue()!\n", __func__, 616 ccb->ccb_h.func_code, err); 617 ctl_free_io(io); 618 ccb->ccb_h.status = CAM_REQ_INVALID; 619 xpt_done(ccb); 620 return; 621 } 622 break; 623 } 624 case XPT_ABORT: { 625 union ctl_io *io; 626 union ccb *abort_ccb; 627 628 abort_ccb = ccb->cab.abort_ccb; 629 630 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 631 ccb->ccb_h.status = CAM_REQ_INVALID; 632 xpt_done(ccb); 633 } 634 635 /* 636 * If we aren't online, there are no devices to talk to. 637 */ 638 if (softc->online == 0) { 639 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 640 xpt_done(ccb); 641 return; 642 } 643 644 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 645 if (io == NULL) { 646 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 647 xpt_freeze_devq(ccb->ccb_h.path, 1); 648 xpt_done(ccb); 649 return; 650 } 651 652 ctl_zero_io(io); 653 /* Save pointers on both sides */ 654 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 655 ccb->ccb_h.io_ptr = io; 656 657 io->io_hdr.io_type = CTL_IO_TASK; 658 io->io_hdr.nexus.initid.id = 1; 659 io->io_hdr.nexus.targ_port = softc->port.targ_port; 660 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 661 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 662 io->taskio.task_action = CTL_TASK_ABORT_TASK; 663 io->taskio.tag_num = abort_ccb->csio.tag_id; 664 switch (abort_ccb->csio.tag_action) { 665 case CAM_TAG_ACTION_NONE: 666 io->taskio.tag_type = CTL_TAG_UNTAGGED; 667 break; 668 case MSG_SIMPLE_TASK: 669 io->taskio.tag_type = CTL_TAG_SIMPLE; 670 break; 671 case MSG_HEAD_OF_QUEUE_TASK: 672 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 673 break; 674 case MSG_ORDERED_TASK: 675 io->taskio.tag_type = CTL_TAG_ORDERED; 676 break; 677 case MSG_ACA_TASK: 678 io->taskio.tag_type = CTL_TAG_ACA; 679 break; 680 default: 681 io->taskio.tag_type = CTL_TAG_UNTAGGED; 682 printf("%s: unhandled tag type %#x!!\n", __func__, 683 abort_ccb->csio.tag_action); 684 break; 685 } 686 err = ctl_queue(io); 687 if (err != CTL_RETVAL_COMPLETE) { 688 printf("%s func %d: error %d returned by " 689 "ctl_queue()!\n", __func__, 690 ccb->ccb_h.func_code, err); 691 ctl_free_io(io); 692 } 693 break; 694 } 695 case XPT_GET_TRAN_SETTINGS: { 696 struct ccb_trans_settings *cts; 697 struct ccb_trans_settings_scsi *scsi; 698 struct ccb_trans_settings_fc *fc; 699 700 cts = &ccb->cts; 701 scsi = &cts->proto_specific.scsi; 702 fc = &cts->xport_specific.fc; 703 704 705 cts->protocol = PROTO_SCSI; 706 cts->protocol_version = SCSI_REV_SPC2; 707 cts->transport = XPORT_FC; 708 cts->transport_version = 0; 709 710 scsi->valid = CTS_SCSI_VALID_TQ; 711 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 712 fc->valid = CTS_FC_VALID_SPEED; 713 fc->bitrate = 800000; 714 fc->wwnn = softc->wwnn; 715 fc->wwpn = softc->wwpn; 716 fc->port = softc->port.targ_port; 717 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 718 CTS_FC_VALID_PORT; 719 ccb->ccb_h.status = CAM_REQ_CMP; 720 break; 721 } 722 case XPT_SET_TRAN_SETTINGS: 723 /* XXX KDM should we actually do something here? */ 724 ccb->ccb_h.status = CAM_REQ_CMP; 725 break; 726 case XPT_RESET_BUS: 727 case XPT_RESET_DEV: { 728 union ctl_io *io; 729 730 /* 731 * If we aren't online, there are no devices to talk to. 732 */ 733 if (softc->online == 0) { 734 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 735 xpt_done(ccb); 736 return; 737 } 738 739 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 740 if (io == NULL) { 741 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 742 xpt_freeze_devq(ccb->ccb_h.path, 1); 743 xpt_done(ccb); 744 return; 745 } 746 747 ctl_zero_io(io); 748 /* Save pointers on both sides */ 749 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 750 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 751 ccb->ccb_h.io_ptr = io; 752 753 io->io_hdr.io_type = CTL_IO_TASK; 754 io->io_hdr.nexus.initid.id = 0; 755 io->io_hdr.nexus.targ_port = softc->port.targ_port; 756 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 757 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 758 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 759 io->taskio.task_action = CTL_TASK_BUS_RESET; 760 else 761 io->taskio.task_action = CTL_TASK_LUN_RESET; 762 763 err = ctl_queue(io); 764 if (err != CTL_RETVAL_COMPLETE) { 765 printf("%s func %d: error %d returned by " 766 "ctl_queue()!\n", __func__, 767 ccb->ccb_h.func_code, err); 768 ctl_free_io(io); 769 } 770 break; 771 } 772 case XPT_CALC_GEOMETRY: 773 cam_calc_geometry(&ccb->ccg, 1); 774 xpt_done(ccb); 775 break; 776 case XPT_PATH_INQ: { 777 struct ccb_pathinq *cpi; 778 779 cpi = &ccb->cpi; 780 781 cpi->version_num = 0; 782 cpi->hba_inquiry = PI_TAG_ABLE; 783 cpi->target_sprt = 0; 784 cpi->hba_misc = 0; 785 cpi->hba_eng_cnt = 0; 786 cpi->max_target = 1; 787 cpi->max_lun = 1024; 788 /* Do we really have a limit? */ 789 cpi->maxio = 1024 * 1024; 790 cpi->async_flags = 0; 791 cpi->hpath_id = 0; 792 cpi->initiator_id = 0; 793 794 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 795 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 796 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 797 cpi->unit_number = 0; 798 cpi->bus_id = 0; 799 cpi->base_transfer_speed = 800000; 800 cpi->protocol = PROTO_SCSI; 801 cpi->protocol_version = SCSI_REV_SPC2; 802 /* 803 * Pretend to be Fibre Channel. 804 */ 805 cpi->transport = XPORT_FC; 806 cpi->transport_version = 0; 807 cpi->xport_specific.fc.wwnn = softc->wwnn; 808 cpi->xport_specific.fc.wwpn = softc->wwpn; 809 cpi->xport_specific.fc.port = softc->port.targ_port; 810 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 811 cpi->ccb_h.status = CAM_REQ_CMP; 812 break; 813 } 814 default: 815 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 816 printf("%s: unsupported CCB type %#x\n", __func__, 817 ccb->ccb_h.func_code); 818 xpt_done(ccb); 819 break; 820 } 821} 822 823static void 824cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 825{ 826 827} 828