ctl_frontend_cam_sim.c revision 288759
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 288759 2015-10-05 09:21:45Z 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 port->targ_port = -1; 161 162 retval = ctl_port_register(port); 163 if (retval != 0) { 164 printf("%s: ctl_port_register() failed with error %d!\n", 165 __func__, retval); 166 mtx_destroy(&softc->lock); 167 return (retval); 168 } 169 170 /* 171 * Get the WWNN out of the database, and create a WWPN as well. 172 */ 173#ifdef NEEDTOPORT 174 ddb_GetWWNN((char *)wwnn); 175 softc->wwnn = be64dec(wwnn); 176 softc->wwpn = softc->wwnn + (softc->port.targ_port & 0xff); 177#endif 178 179 /* 180 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 181 * ahead and set something random. 182 */ 183 if (port->wwnn == 0) { 184 uint64_t random_bits; 185 186 arc4rand(&random_bits, sizeof(random_bits), 0); 187 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 188 /* Company ID */ 0x5000000000000000ULL | 189 /* NL-Port */ 0x0300; 190 softc->wwpn = softc->wwnn + port->targ_port + 1; 191 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 192 } else { 193 softc->wwnn = port->wwnn; 194 softc->wwpn = port->wwpn; 195 } 196 197 mtx_lock(&softc->lock); 198 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 199 if (softc->devq == NULL) { 200 printf("%s: error allocating devq\n", __func__); 201 retval = ENOMEM; 202 goto bailout; 203 } 204 205 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 206 softc, /*unit*/ 0, &softc->lock, 1, 207 port->num_requested_ctl_io, softc->devq); 208 if (softc->sim == NULL) { 209 printf("%s: error allocating SIM\n", __func__); 210 retval = ENOMEM; 211 goto bailout; 212 } 213 214 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 215 printf("%s: error registering SIM\n", __func__); 216 retval = ENOMEM; 217 goto bailout; 218 } 219 220 if (xpt_create_path(&softc->path, /*periph*/NULL, 221 cam_sim_path(softc->sim), 222 CAM_TARGET_WILDCARD, 223 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 224 printf("%s: error creating path\n", __func__); 225 xpt_bus_deregister(cam_sim_path(softc->sim)); 226 retval = EINVAL; 227 goto bailout; 228 } 229 230 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 231 csa.ccb_h.func_code = XPT_SASYNC_CB; 232 csa.event_enable = AC_LOST_DEVICE; 233 csa.callback = cfcs_async; 234 csa.callback_arg = softc->sim; 235 xpt_action((union ccb *)&csa); 236 237 mtx_unlock(&softc->lock); 238 239 return (retval); 240 241bailout: 242 if (softc->sim) 243 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 244 else if (softc->devq) 245 cam_simq_free(softc->devq); 246 mtx_unlock(&softc->lock); 247 mtx_destroy(&softc->lock); 248 249 return (retval); 250} 251 252static void 253cfcs_poll(struct cam_sim *sim) 254{ 255 256} 257 258static void 259cfcs_onoffline(void *arg, int online) 260{ 261 struct cfcs_softc *softc; 262 union ccb *ccb; 263 264 softc = (struct cfcs_softc *)arg; 265 266 mtx_lock(&softc->lock); 267 softc->online = online; 268 269 ccb = xpt_alloc_ccb_nowait(); 270 if (ccb == NULL) { 271 printf("%s: unable to allocate CCB for rescan\n", __func__); 272 goto bailout; 273 } 274 275 if (xpt_create_path(&ccb->ccb_h.path, NULL, 276 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 277 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 278 printf("%s: can't allocate path for rescan\n", __func__); 279 xpt_free_ccb(ccb); 280 goto bailout; 281 } 282 xpt_rescan(ccb); 283 284bailout: 285 mtx_unlock(&softc->lock); 286} 287 288static void 289cfcs_online(void *arg) 290{ 291 cfcs_onoffline(arg, /*online*/ 1); 292} 293 294static void 295cfcs_offline(void *arg) 296{ 297 cfcs_onoffline(arg, /*online*/ 0); 298} 299 300/* 301 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 302 * way to combine the functionality? 303 * 304 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 305 * caller's context, which will usually be the backend. That may not be a 306 * good thing. 307 */ 308static void 309cfcs_datamove(union ctl_io *io) 310{ 311 union ccb *ccb; 312 bus_dma_segment_t cam_sg_entry, *cam_sglist; 313 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 314 int cam_sg_count, ctl_sg_count, cam_sg_start; 315 int cam_sg_offset; 316 int len_to_copy, len_copied; 317 int ctl_watermark, cam_watermark; 318 int i, j; 319 320 321 cam_sg_offset = 0; 322 cam_sg_start = 0; 323 324 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 325 326 /* 327 * Note that we have a check in cfcs_action() to make sure that any 328 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 329 * is just to make sure no one removes that check without updating 330 * this code to provide the additional functionality necessary to 331 * support those modes of operation. 332 */ 333 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 334 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 335 336 /* 337 * Simplify things on both sides by putting single buffers into a 338 * single entry S/G list. 339 */ 340 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 341 case CAM_DATA_SG: { 342 int len_seen; 343 344 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 345 cam_sg_count = ccb->csio.sglist_cnt; 346 347 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 348 if ((len_seen + cam_sglist[i].ds_len) >= 349 io->scsiio.kern_rel_offset) { 350 cam_sg_start = i; 351 cam_sg_offset = io->scsiio.kern_rel_offset - 352 len_seen; 353 break; 354 } 355 len_seen += cam_sglist[i].ds_len; 356 } 357 break; 358 } 359 case CAM_DATA_VADDR: 360 cam_sglist = &cam_sg_entry; 361 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 362 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 363 cam_sg_count = 1; 364 cam_sg_start = 0; 365 cam_sg_offset = io->scsiio.kern_rel_offset; 366 break; 367 default: 368 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 369 } 370 371 if (io->scsiio.kern_sg_entries > 0) { 372 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 373 ctl_sg_count = io->scsiio.kern_sg_entries; 374 } else { 375 ctl_sglist = &ctl_sg_entry; 376 ctl_sglist->addr = io->scsiio.kern_data_ptr; 377 ctl_sglist->len = io->scsiio.kern_data_len; 378 ctl_sg_count = 1; 379 } 380 381 ctl_watermark = 0; 382 cam_watermark = cam_sg_offset; 383 len_copied = 0; 384 for (i = cam_sg_start, j = 0; 385 i < cam_sg_count && j < ctl_sg_count;) { 386 uint8_t *cam_ptr, *ctl_ptr; 387 388 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 389 ctl_sglist[j].len - ctl_watermark); 390 391 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 392 cam_ptr = cam_ptr + cam_watermark; 393 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 394 /* 395 * XXX KDM fix this! 396 */ 397 panic("need to implement bus address support"); 398#if 0 399 kern_ptr = bus_to_virt(kern_sglist[j].addr); 400#endif 401 } else 402 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 403 ctl_ptr = ctl_ptr + ctl_watermark; 404 405 ctl_watermark += len_to_copy; 406 cam_watermark += len_to_copy; 407 408 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 409 CTL_FLAG_DATA_IN) { 410 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 411 __func__, len_to_copy)); 412 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 413 __func__, cam_ptr)); 414 bcopy(ctl_ptr, cam_ptr, len_to_copy); 415 } else { 416 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 417 __func__, len_to_copy)); 418 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 419 __func__, ctl_ptr)); 420 bcopy(cam_ptr, ctl_ptr, len_to_copy); 421 } 422 423 len_copied += len_to_copy; 424 425 if (cam_sglist[i].ds_len == cam_watermark) { 426 i++; 427 cam_watermark = 0; 428 } 429 430 if (ctl_sglist[j].len == ctl_watermark) { 431 j++; 432 ctl_watermark = 0; 433 } 434 } 435 436 io->scsiio.ext_data_filled += len_copied; 437 438 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 439 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 440 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 441 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 442 ccb->ccb_h.status |= CAM_REQ_CMP; 443 xpt_done(ccb); 444 } 445 446 io->scsiio.be_move_done(io); 447} 448 449static void 450cfcs_done(union ctl_io *io) 451{ 452 union ccb *ccb; 453 454 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 455 if (ccb == NULL) { 456 ctl_free_io(io); 457 return; 458 } 459 460 /* 461 * At this point we should have status. If we don't, that's a bug. 462 */ 463 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 464 ("invalid CTL status %#x", io->io_hdr.status)); 465 466 /* 467 * Translate CTL status to CAM status. 468 */ 469 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 470 switch (io->io_hdr.status & CTL_STATUS_MASK) { 471 case CTL_SUCCESS: 472 ccb->ccb_h.status |= CAM_REQ_CMP; 473 break; 474 case CTL_SCSI_ERROR: 475 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 476 ccb->csio.scsi_status = io->scsiio.scsi_status; 477 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 478 min(io->scsiio.sense_len, ccb->csio.sense_len)); 479 if (ccb->csio.sense_len > io->scsiio.sense_len) 480 ccb->csio.sense_resid = ccb->csio.sense_len - 481 io->scsiio.sense_len; 482 else 483 ccb->csio.sense_resid = 0; 484 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 485 cfcs_max_sense) { 486 ccb->csio.sense_resid = ccb->csio.sense_len - 487 cfcs_max_sense; 488 } 489 break; 490 case CTL_CMD_ABORTED: 491 ccb->ccb_h.status |= CAM_REQ_ABORTED; 492 break; 493 case CTL_ERROR: 494 default: 495 ccb->ccb_h.status |= CAM_REQ_CMP_ERR; 496 break; 497 } 498 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP && 499 (ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 500 xpt_freeze_devq(ccb->ccb_h.path, 1); 501 ccb->ccb_h.status |= CAM_DEV_QFRZN; 502 } 503 xpt_done(ccb); 504 ctl_free_io(io); 505} 506 507void 508cfcs_action(struct cam_sim *sim, union ccb *ccb) 509{ 510 struct cfcs_softc *softc; 511 int err; 512 513 softc = (struct cfcs_softc *)cam_sim_softc(sim); 514 mtx_assert(&softc->lock, MA_OWNED); 515 516 switch (ccb->ccb_h.func_code) { 517 case XPT_SCSI_IO: { 518 union ctl_io *io; 519 struct ccb_scsiio *csio; 520 521 csio = &ccb->csio; 522 523 /* 524 * Catch CCB flags, like physical address flags, that 525 * indicate situations we currently can't handle. 526 */ 527 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 528 ccb->ccb_h.status = CAM_REQ_INVALID; 529 printf("%s: bad CCB flags %#x (all flags %#x)\n", 530 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 531 ccb->ccb_h.flags); 532 xpt_done(ccb); 533 return; 534 } 535 536 /* 537 * If we aren't online, there are no devices to see. 538 */ 539 if (softc->online == 0) { 540 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 541 xpt_done(ccb); 542 return; 543 } 544 545 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 546 if (io == NULL) { 547 printf("%s: can't allocate ctl_io\n", __func__); 548 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 549 xpt_freeze_devq(ccb->ccb_h.path, 1); 550 xpt_done(ccb); 551 return; 552 } 553 ctl_zero_io(io); 554 /* Save pointers on both sides */ 555 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 556 ccb->ccb_h.io_ptr = io; 557 558 /* 559 * Only SCSI I/O comes down this path, resets, etc. come 560 * down via the XPT_RESET_BUS/LUN CCBs below. 561 */ 562 io->io_hdr.io_type = CTL_IO_SCSI; 563 io->io_hdr.nexus.initid = 1; 564 io->io_hdr.nexus.targ_port = softc->port.targ_port; 565 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 566 /* 567 * This tag scheme isn't the best, since we could in theory 568 * have a very long-lived I/O and tag collision, especially 569 * in a high I/O environment. But it should work well 570 * enough for now. Since we're using unsigned ints, 571 * they'll just wrap around. 572 */ 573 io->scsiio.tag_num = softc->cur_tag_num++; 574 csio->tag_id = io->scsiio.tag_num; 575 switch (csio->tag_action) { 576 case CAM_TAG_ACTION_NONE: 577 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 578 break; 579 case MSG_SIMPLE_TASK: 580 io->scsiio.tag_type = CTL_TAG_SIMPLE; 581 break; 582 case MSG_HEAD_OF_QUEUE_TASK: 583 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 584 break; 585 case MSG_ORDERED_TASK: 586 io->scsiio.tag_type = CTL_TAG_ORDERED; 587 break; 588 case MSG_ACA_TASK: 589 io->scsiio.tag_type = CTL_TAG_ACA; 590 break; 591 default: 592 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 593 printf("%s: unhandled tag type %#x!!\n", __func__, 594 csio->tag_action); 595 break; 596 } 597 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 598 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 599 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 600 } 601 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 602 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 603 io->scsiio.cdb_len); 604 605 ccb->ccb_h.status |= CAM_SIM_QUEUED; 606 err = ctl_queue(io); 607 if (err != CTL_RETVAL_COMPLETE) { 608 printf("%s: func %d: error %d returned by " 609 "ctl_queue()!\n", __func__, 610 ccb->ccb_h.func_code, err); 611 ctl_free_io(io); 612 ccb->ccb_h.status = CAM_REQ_INVALID; 613 xpt_done(ccb); 614 return; 615 } 616 break; 617 } 618 case XPT_ABORT: { 619 union ctl_io *io; 620 union ccb *abort_ccb; 621 622 abort_ccb = ccb->cab.abort_ccb; 623 624 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 625 ccb->ccb_h.status = CAM_REQ_INVALID; 626 xpt_done(ccb); 627 } 628 629 /* 630 * If we aren't online, there are no devices to talk to. 631 */ 632 if (softc->online == 0) { 633 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 634 xpt_done(ccb); 635 return; 636 } 637 638 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 639 if (io == NULL) { 640 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 641 xpt_freeze_devq(ccb->ccb_h.path, 1); 642 xpt_done(ccb); 643 return; 644 } 645 646 ctl_zero_io(io); 647 /* Save pointers on both sides */ 648 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 649 ccb->ccb_h.io_ptr = io; 650 651 io->io_hdr.io_type = CTL_IO_TASK; 652 io->io_hdr.nexus.initid = 1; 653 io->io_hdr.nexus.targ_port = softc->port.targ_port; 654 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 655 io->taskio.task_action = CTL_TASK_ABORT_TASK; 656 io->taskio.tag_num = abort_ccb->csio.tag_id; 657 switch (abort_ccb->csio.tag_action) { 658 case CAM_TAG_ACTION_NONE: 659 io->taskio.tag_type = CTL_TAG_UNTAGGED; 660 break; 661 case MSG_SIMPLE_TASK: 662 io->taskio.tag_type = CTL_TAG_SIMPLE; 663 break; 664 case MSG_HEAD_OF_QUEUE_TASK: 665 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 666 break; 667 case MSG_ORDERED_TASK: 668 io->taskio.tag_type = CTL_TAG_ORDERED; 669 break; 670 case MSG_ACA_TASK: 671 io->taskio.tag_type = CTL_TAG_ACA; 672 break; 673 default: 674 io->taskio.tag_type = CTL_TAG_UNTAGGED; 675 printf("%s: unhandled tag type %#x!!\n", __func__, 676 abort_ccb->csio.tag_action); 677 break; 678 } 679 err = ctl_queue(io); 680 if (err != CTL_RETVAL_COMPLETE) { 681 printf("%s func %d: error %d returned by " 682 "ctl_queue()!\n", __func__, 683 ccb->ccb_h.func_code, err); 684 ctl_free_io(io); 685 } 686 break; 687 } 688 case XPT_GET_TRAN_SETTINGS: { 689 struct ccb_trans_settings *cts; 690 struct ccb_trans_settings_scsi *scsi; 691 struct ccb_trans_settings_fc *fc; 692 693 cts = &ccb->cts; 694 scsi = &cts->proto_specific.scsi; 695 fc = &cts->xport_specific.fc; 696 697 698 cts->protocol = PROTO_SCSI; 699 cts->protocol_version = SCSI_REV_SPC2; 700 cts->transport = XPORT_FC; 701 cts->transport_version = 0; 702 703 scsi->valid = CTS_SCSI_VALID_TQ; 704 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 705 fc->valid = CTS_FC_VALID_SPEED; 706 fc->bitrate = 800000; 707 fc->wwnn = softc->wwnn; 708 fc->wwpn = softc->wwpn; 709 fc->port = softc->port.targ_port; 710 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 711 CTS_FC_VALID_PORT; 712 ccb->ccb_h.status = CAM_REQ_CMP; 713 break; 714 } 715 case XPT_SET_TRAN_SETTINGS: 716 /* XXX KDM should we actually do something here? */ 717 ccb->ccb_h.status = CAM_REQ_CMP; 718 break; 719 case XPT_RESET_BUS: 720 case XPT_RESET_DEV: { 721 union ctl_io *io; 722 723 /* 724 * If we aren't online, there are no devices to talk to. 725 */ 726 if (softc->online == 0) { 727 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 728 xpt_done(ccb); 729 return; 730 } 731 732 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 733 if (io == NULL) { 734 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 735 xpt_freeze_devq(ccb->ccb_h.path, 1); 736 xpt_done(ccb); 737 return; 738 } 739 740 ctl_zero_io(io); 741 /* Save pointers on both sides */ 742 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 743 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 744 ccb->ccb_h.io_ptr = io; 745 746 io->io_hdr.io_type = CTL_IO_TASK; 747 io->io_hdr.nexus.initid = 1; 748 io->io_hdr.nexus.targ_port = softc->port.targ_port; 749 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 750 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 751 io->taskio.task_action = CTL_TASK_BUS_RESET; 752 else 753 io->taskio.task_action = CTL_TASK_LUN_RESET; 754 755 err = ctl_queue(io); 756 if (err != CTL_RETVAL_COMPLETE) { 757 printf("%s func %d: error %d returned by " 758 "ctl_queue()!\n", __func__, 759 ccb->ccb_h.func_code, err); 760 ctl_free_io(io); 761 } 762 break; 763 } 764 case XPT_CALC_GEOMETRY: 765 cam_calc_geometry(&ccb->ccg, 1); 766 xpt_done(ccb); 767 break; 768 case XPT_PATH_INQ: { 769 struct ccb_pathinq *cpi; 770 771 cpi = &ccb->cpi; 772 773 cpi->version_num = 0; 774 cpi->hba_inquiry = PI_TAG_ABLE; 775 cpi->target_sprt = 0; 776 cpi->hba_misc = 0; 777 cpi->hba_eng_cnt = 0; 778 cpi->max_target = 1; 779 cpi->max_lun = 1024; 780 /* Do we really have a limit? */ 781 cpi->maxio = 1024 * 1024; 782 cpi->async_flags = 0; 783 cpi->hpath_id = 0; 784 cpi->initiator_id = 0; 785 786 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 787 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 788 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 789 cpi->unit_number = 0; 790 cpi->bus_id = 0; 791 cpi->base_transfer_speed = 800000; 792 cpi->protocol = PROTO_SCSI; 793 cpi->protocol_version = SCSI_REV_SPC2; 794 /* 795 * Pretend to be Fibre Channel. 796 */ 797 cpi->transport = XPORT_FC; 798 cpi->transport_version = 0; 799 cpi->xport_specific.fc.wwnn = softc->wwnn; 800 cpi->xport_specific.fc.wwpn = softc->wwpn; 801 cpi->xport_specific.fc.port = softc->port.targ_port; 802 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 803 cpi->ccb_h.status = CAM_REQ_CMP; 804 break; 805 } 806 default: 807 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 808 printf("%s: unsupported CCB type %#x\n", __func__, 809 ccb->ccb_h.func_code); 810 xpt_done(ccb); 811 break; 812 } 813} 814 815static void 816cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 817{ 818 819} 820