ctl_frontend_cam_sim.c revision 276616
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 276616 2015-01-03 13:11:39Z 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_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_port port; 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 uint64_t wwnn; 84 uint64_t wwpn; 85 uint32_t cur_tag_num; 86 int online; 87}; 88 89/* 90 * We can't handle CCBs with these flags. For the most part, we just don't 91 * handle physical addresses yet. That would require mapping things in 92 * order to do the copy. 93 */ 94#define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 95 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 96 CAM_SENSE_PHYS) 97 98int cfcs_init(void); 99static void cfcs_poll(struct cam_sim *sim); 100static void cfcs_online(void *arg); 101static void cfcs_offline(void *arg); 102static int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id); 103static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id); 104static void cfcs_datamove(union ctl_io *io); 105static void cfcs_done(union ctl_io *io); 106void cfcs_action(struct cam_sim *sim, union ccb *ccb); 107static void cfcs_async(void *callback_arg, uint32_t code, 108 struct cam_path *path, void *arg); 109 110struct cfcs_softc cfcs_softc; 111/* 112 * This is primarly intended to allow for error injection to test the CAM 113 * sense data and sense residual handling code. This sets the maximum 114 * amount of SCSI sense data that we will report to CAM. 115 */ 116static int cfcs_max_sense = sizeof(struct scsi_sense_data); 117 118SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 119 "CAM Target Layer SIM frontend"); 120SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 121 &cfcs_max_sense, 0, "Maximum sense data size"); 122 123static struct ctl_frontend cfcs_frontend = 124{ 125 .name = "camsim", 126 .init = cfcs_init, 127}; 128CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 129 130int 131cfcs_init(void) 132{ 133 struct cfcs_softc *softc; 134 struct ccb_setasync csa; 135 struct ctl_port *port; 136#ifdef NEEDTOPORT 137 char wwnn[8]; 138#endif 139 int retval; 140 141 softc = &cfcs_softc; 142 retval = 0; 143 bzero(softc, sizeof(*softc)); 144 mtx_init(&softc->lock, "ctl2cam", NULL, MTX_DEF); 145 port = &softc->port; 146 147 port->frontend = &cfcs_frontend; 148 port->port_type = CTL_PORT_INTERNAL; 149 /* XXX KDM what should the real number be here? */ 150 port->num_requested_ctl_io = 4096; 151 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 152 port->port_name = softc->port_name; 153 port->port_online = cfcs_online; 154 port->port_offline = cfcs_offline; 155 port->onoff_arg = softc; 156 port->lun_enable = cfcs_lun_enable; 157 port->lun_disable = cfcs_lun_disable; 158 port->targ_lun_arg = softc; 159 port->fe_datamove = cfcs_datamove; 160 port->fe_done = cfcs_done; 161 162 /* XXX KDM what should we report here? */ 163 /* XXX These should probably be fetched from CTL. */ 164 port->max_targets = 1; 165 port->max_target_id = 15; 166 167 retval = ctl_port_register(port); 168 if (retval != 0) { 169 printf("%s: ctl_port_register() failed with error %d!\n", 170 __func__, retval); 171 mtx_destroy(&softc->lock); 172 return (retval); 173 } 174 175 /* 176 * Get the WWNN out of the database, and create a WWPN as well. 177 */ 178#ifdef NEEDTOPORT 179 ddb_GetWWNN((char *)wwnn); 180 softc->wwnn = be64dec(wwnn); 181 softc->wwpn = softc->wwnn + (softc->port.targ_port & 0xff); 182#endif 183 184 /* 185 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 186 * ahead and set something random. 187 */ 188 if (port->wwnn == 0) { 189 uint64_t random_bits; 190 191 arc4rand(&random_bits, sizeof(random_bits), 0); 192 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 193 /* Company ID */ 0x5000000000000000ULL | 194 /* NL-Port */ 0x0300; 195 softc->wwpn = softc->wwnn + port->targ_port + 1; 196 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 197 } else { 198 softc->wwnn = port->wwnn; 199 softc->wwpn = port->wwpn; 200 } 201 202 mtx_lock(&softc->lock); 203 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 204 if (softc->devq == NULL) { 205 printf("%s: error allocating devq\n", __func__); 206 retval = ENOMEM; 207 goto bailout; 208 } 209 210 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 211 softc, /*unit*/ 0, &softc->lock, 1, 212 port->num_requested_ctl_io, softc->devq); 213 if (softc->sim == NULL) { 214 printf("%s: error allocating SIM\n", __func__); 215 retval = ENOMEM; 216 goto bailout; 217 } 218 219 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 220 printf("%s: error registering SIM\n", __func__); 221 retval = ENOMEM; 222 goto bailout; 223 } 224 225 if (xpt_create_path(&softc->path, /*periph*/NULL, 226 cam_sim_path(softc->sim), 227 CAM_TARGET_WILDCARD, 228 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 229 printf("%s: error creating path\n", __func__); 230 xpt_bus_deregister(cam_sim_path(softc->sim)); 231 retval = EINVAL; 232 goto bailout; 233 } 234 235 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 236 csa.ccb_h.func_code = XPT_SASYNC_CB; 237 csa.event_enable = AC_LOST_DEVICE; 238 csa.callback = cfcs_async; 239 csa.callback_arg = softc->sim; 240 xpt_action((union ccb *)&csa); 241 242 mtx_unlock(&softc->lock); 243 244 return (retval); 245 246bailout: 247 if (softc->sim) 248 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 249 else if (softc->devq) 250 cam_simq_free(softc->devq); 251 mtx_unlock(&softc->lock); 252 mtx_destroy(&softc->lock); 253 254 return (retval); 255} 256 257static void 258cfcs_poll(struct cam_sim *sim) 259{ 260 261} 262 263static void 264cfcs_onoffline(void *arg, int online) 265{ 266 struct cfcs_softc *softc; 267 union ccb *ccb; 268 269 softc = (struct cfcs_softc *)arg; 270 271 mtx_lock(&softc->lock); 272 softc->online = online; 273 274 ccb = xpt_alloc_ccb_nowait(); 275 if (ccb == NULL) { 276 printf("%s: unable to allocate CCB for rescan\n", __func__); 277 goto bailout; 278 } 279 280 if (xpt_create_path(&ccb->ccb_h.path, NULL, 281 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 282 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 283 printf("%s: can't allocate path for rescan\n", __func__); 284 xpt_free_ccb(ccb); 285 goto bailout; 286 } 287 xpt_rescan(ccb); 288 289bailout: 290 mtx_unlock(&softc->lock); 291} 292 293static void 294cfcs_online(void *arg) 295{ 296 cfcs_onoffline(arg, /*online*/ 1); 297} 298 299static void 300cfcs_offline(void *arg) 301{ 302 cfcs_onoffline(arg, /*online*/ 0); 303} 304 305static int 306cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 307{ 308 return (0); 309} 310static int 311cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 312{ 313 return (0); 314} 315 316/* 317 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 318 * way to combine the functionality? 319 * 320 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 321 * caller's context, which will usually be the backend. That may not be a 322 * good thing. 323 */ 324static void 325cfcs_datamove(union ctl_io *io) 326{ 327 union ccb *ccb; 328 bus_dma_segment_t cam_sg_entry, *cam_sglist; 329 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 330 int cam_sg_count, ctl_sg_count, cam_sg_start; 331 int cam_sg_offset; 332 int len_to_copy, len_copied; 333 int ctl_watermark, cam_watermark; 334 int i, j; 335 336 337 cam_sg_offset = 0; 338 cam_sg_start = 0; 339 340 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 341 342 /* 343 * Note that we have a check in cfcs_action() to make sure that any 344 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 345 * is just to make sure no one removes that check without updating 346 * this code to provide the additional functionality necessary to 347 * support those modes of operation. 348 */ 349 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 350 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 351 352 /* 353 * Simplify things on both sides by putting single buffers into a 354 * single entry S/G list. 355 */ 356 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 357 case CAM_DATA_SG: { 358 int len_seen; 359 360 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 361 cam_sg_count = ccb->csio.sglist_cnt; 362 363 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 364 if ((len_seen + cam_sglist[i].ds_len) >= 365 io->scsiio.kern_rel_offset) { 366 cam_sg_start = i; 367 cam_sg_offset = io->scsiio.kern_rel_offset - 368 len_seen; 369 break; 370 } 371 len_seen += cam_sglist[i].ds_len; 372 } 373 break; 374 } 375 case CAM_DATA_VADDR: 376 cam_sglist = &cam_sg_entry; 377 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 378 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 379 cam_sg_count = 1; 380 cam_sg_start = 0; 381 cam_sg_offset = io->scsiio.kern_rel_offset; 382 break; 383 default: 384 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 385 } 386 387 if (io->scsiio.kern_sg_entries > 0) { 388 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 389 ctl_sg_count = io->scsiio.kern_sg_entries; 390 } else { 391 ctl_sglist = &ctl_sg_entry; 392 ctl_sglist->addr = io->scsiio.kern_data_ptr; 393 ctl_sglist->len = io->scsiio.kern_data_len; 394 ctl_sg_count = 1; 395 } 396 397 ctl_watermark = 0; 398 cam_watermark = cam_sg_offset; 399 len_copied = 0; 400 for (i = cam_sg_start, j = 0; 401 i < cam_sg_count && j < ctl_sg_count;) { 402 uint8_t *cam_ptr, *ctl_ptr; 403 404 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 405 ctl_sglist[j].len - ctl_watermark); 406 407 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 408 cam_ptr = cam_ptr + cam_watermark; 409 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 410 /* 411 * XXX KDM fix this! 412 */ 413 panic("need to implement bus address support"); 414#if 0 415 kern_ptr = bus_to_virt(kern_sglist[j].addr); 416#endif 417 } else 418 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 419 ctl_ptr = ctl_ptr + ctl_watermark; 420 421 ctl_watermark += len_to_copy; 422 cam_watermark += len_to_copy; 423 424 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 425 CTL_FLAG_DATA_IN) { 426 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 427 __func__, len_to_copy)); 428 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 429 __func__, cam_ptr)); 430 bcopy(ctl_ptr, cam_ptr, len_to_copy); 431 } else { 432 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 433 __func__, len_to_copy)); 434 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 435 __func__, ctl_ptr)); 436 bcopy(cam_ptr, ctl_ptr, len_to_copy); 437 } 438 439 len_copied += len_to_copy; 440 441 if (cam_sglist[i].ds_len == cam_watermark) { 442 i++; 443 cam_watermark = 0; 444 } 445 446 if (ctl_sglist[j].len == ctl_watermark) { 447 j++; 448 ctl_watermark = 0; 449 } 450 } 451 452 io->scsiio.ext_data_filled += len_copied; 453 454 io->scsiio.be_move_done(io); 455} 456 457static void 458cfcs_done(union ctl_io *io) 459{ 460 union ccb *ccb; 461 462 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 463 if (ccb == NULL) { 464 ctl_free_io(io); 465 return; 466 } 467 468 /* 469 * At this point we should have status. If we don't, that's a bug. 470 */ 471 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 472 ("invalid CTL status %#x", io->io_hdr.status)); 473 474 /* 475 * Translate CTL status to CAM status. 476 */ 477 switch (io->io_hdr.status & CTL_STATUS_MASK) { 478 case CTL_SUCCESS: 479 ccb->ccb_h.status = CAM_REQ_CMP; 480 break; 481 case CTL_SCSI_ERROR: 482 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 483 ccb->csio.scsi_status = io->scsiio.scsi_status; 484 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 485 min(io->scsiio.sense_len, ccb->csio.sense_len)); 486 if (ccb->csio.sense_len > io->scsiio.sense_len) 487 ccb->csio.sense_resid = ccb->csio.sense_len - 488 io->scsiio.sense_len; 489 else 490 ccb->csio.sense_resid = 0; 491 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 492 cfcs_max_sense) { 493 ccb->csio.sense_resid = ccb->csio.sense_len - 494 cfcs_max_sense; 495 } 496 break; 497 case CTL_CMD_ABORTED: 498 ccb->ccb_h.status = CAM_REQ_ABORTED; 499 break; 500 case CTL_ERROR: 501 default: 502 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 503 break; 504 } 505 506 xpt_done(ccb); 507 ctl_free_io(io); 508} 509 510void 511cfcs_action(struct cam_sim *sim, union ccb *ccb) 512{ 513 struct cfcs_softc *softc; 514 int err; 515 516 softc = (struct cfcs_softc *)cam_sim_softc(sim); 517 mtx_assert(&softc->lock, MA_OWNED); 518 519 switch (ccb->ccb_h.func_code) { 520 case XPT_SCSI_IO: { 521 union ctl_io *io; 522 struct ccb_scsiio *csio; 523 524 csio = &ccb->csio; 525 526 /* 527 * Catch CCB flags, like physical address flags, that 528 * indicate situations we currently can't handle. 529 */ 530 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 531 ccb->ccb_h.status = CAM_REQ_INVALID; 532 printf("%s: bad CCB flags %#x (all flags %#x)\n", 533 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 534 ccb->ccb_h.flags); 535 xpt_done(ccb); 536 return; 537 } 538 539 /* 540 * If we aren't online, there are no devices to see. 541 */ 542 if (softc->online == 0) { 543 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 544 xpt_done(ccb); 545 return; 546 } 547 548 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 549 if (io == NULL) { 550 printf("%s: can't allocate ctl_io\n", __func__); 551 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 552 xpt_freeze_devq(ccb->ccb_h.path, 1); 553 xpt_done(ccb); 554 return; 555 } 556 ctl_zero_io(io); 557 /* Save pointers on both sides */ 558 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 559 ccb->ccb_h.io_ptr = io; 560 561 /* 562 * Only SCSI I/O comes down this path, resets, etc. come 563 * down via the XPT_RESET_BUS/LUN CCBs below. 564 */ 565 io->io_hdr.io_type = CTL_IO_SCSI; 566 io->io_hdr.nexus.initid.id = 1; 567 io->io_hdr.nexus.targ_port = softc->port.targ_port; 568 /* 569 * XXX KDM how do we handle target IDs? 570 */ 571 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 572 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 573 /* 574 * This tag scheme isn't the best, since we could in theory 575 * have a very long-lived I/O and tag collision, especially 576 * in a high I/O environment. But it should work well 577 * enough for now. Since we're using unsigned ints, 578 * they'll just wrap around. 579 */ 580 io->scsiio.tag_num = softc->cur_tag_num++; 581 csio->tag_id = io->scsiio.tag_num; 582 switch (csio->tag_action) { 583 case CAM_TAG_ACTION_NONE: 584 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 585 break; 586 case MSG_SIMPLE_TASK: 587 io->scsiio.tag_type = CTL_TAG_SIMPLE; 588 break; 589 case MSG_HEAD_OF_QUEUE_TASK: 590 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 591 break; 592 case MSG_ORDERED_TASK: 593 io->scsiio.tag_type = CTL_TAG_ORDERED; 594 break; 595 case MSG_ACA_TASK: 596 io->scsiio.tag_type = CTL_TAG_ACA; 597 break; 598 default: 599 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 600 printf("%s: unhandled tag type %#x!!\n", __func__, 601 csio->tag_action); 602 break; 603 } 604 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 605 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 606 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 607 } 608 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 609 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 610 io->scsiio.cdb_len); 611 612 ccb->ccb_h.status |= CAM_SIM_QUEUED; 613 err = ctl_queue(io); 614 if (err != CTL_RETVAL_COMPLETE) { 615 printf("%s: func %d: error %d returned by " 616 "ctl_queue()!\n", __func__, 617 ccb->ccb_h.func_code, err); 618 ctl_free_io(io); 619 ccb->ccb_h.status = CAM_REQ_INVALID; 620 xpt_done(ccb); 621 return; 622 } 623 break; 624 } 625 case XPT_ABORT: { 626 union ctl_io *io; 627 union ccb *abort_ccb; 628 629 abort_ccb = ccb->cab.abort_ccb; 630 631 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 632 ccb->ccb_h.status = CAM_REQ_INVALID; 633 xpt_done(ccb); 634 } 635 636 /* 637 * If we aren't online, there are no devices to talk to. 638 */ 639 if (softc->online == 0) { 640 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 641 xpt_done(ccb); 642 return; 643 } 644 645 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 646 if (io == NULL) { 647 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 648 xpt_freeze_devq(ccb->ccb_h.path, 1); 649 xpt_done(ccb); 650 return; 651 } 652 653 ctl_zero_io(io); 654 /* Save pointers on both sides */ 655 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 656 ccb->ccb_h.io_ptr = io; 657 658 io->io_hdr.io_type = CTL_IO_TASK; 659 io->io_hdr.nexus.initid.id = 1; 660 io->io_hdr.nexus.targ_port = softc->port.targ_port; 661 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 662 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 663 io->taskio.task_action = CTL_TASK_ABORT_TASK; 664 io->taskio.tag_num = abort_ccb->csio.tag_id; 665 switch (abort_ccb->csio.tag_action) { 666 case CAM_TAG_ACTION_NONE: 667 io->taskio.tag_type = CTL_TAG_UNTAGGED; 668 break; 669 case MSG_SIMPLE_TASK: 670 io->taskio.tag_type = CTL_TAG_SIMPLE; 671 break; 672 case MSG_HEAD_OF_QUEUE_TASK: 673 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 674 break; 675 case MSG_ORDERED_TASK: 676 io->taskio.tag_type = CTL_TAG_ORDERED; 677 break; 678 case MSG_ACA_TASK: 679 io->taskio.tag_type = CTL_TAG_ACA; 680 break; 681 default: 682 io->taskio.tag_type = CTL_TAG_UNTAGGED; 683 printf("%s: unhandled tag type %#x!!\n", __func__, 684 abort_ccb->csio.tag_action); 685 break; 686 } 687 err = ctl_queue(io); 688 if (err != CTL_RETVAL_COMPLETE) { 689 printf("%s func %d: error %d returned by " 690 "ctl_queue()!\n", __func__, 691 ccb->ccb_h.func_code, err); 692 ctl_free_io(io); 693 } 694 break; 695 } 696 case XPT_GET_TRAN_SETTINGS: { 697 struct ccb_trans_settings *cts; 698 struct ccb_trans_settings_scsi *scsi; 699 struct ccb_trans_settings_fc *fc; 700 701 cts = &ccb->cts; 702 scsi = &cts->proto_specific.scsi; 703 fc = &cts->xport_specific.fc; 704 705 706 cts->protocol = PROTO_SCSI; 707 cts->protocol_version = SCSI_REV_SPC2; 708 cts->transport = XPORT_FC; 709 cts->transport_version = 0; 710 711 scsi->valid = CTS_SCSI_VALID_TQ; 712 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 713 fc->valid = CTS_FC_VALID_SPEED; 714 fc->bitrate = 800000; 715 fc->wwnn = softc->wwnn; 716 fc->wwpn = softc->wwpn; 717 fc->port = softc->port.targ_port; 718 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 719 CTS_FC_VALID_PORT; 720 ccb->ccb_h.status = CAM_REQ_CMP; 721 break; 722 } 723 case XPT_SET_TRAN_SETTINGS: 724 /* XXX KDM should we actually do something here? */ 725 ccb->ccb_h.status = CAM_REQ_CMP; 726 break; 727 case XPT_RESET_BUS: 728 case XPT_RESET_DEV: { 729 union ctl_io *io; 730 731 /* 732 * If we aren't online, there are no devices to talk to. 733 */ 734 if (softc->online == 0) { 735 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 736 xpt_done(ccb); 737 return; 738 } 739 740 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 741 if (io == NULL) { 742 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 743 xpt_freeze_devq(ccb->ccb_h.path, 1); 744 xpt_done(ccb); 745 return; 746 } 747 748 ctl_zero_io(io); 749 /* Save pointers on both sides */ 750 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 751 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 752 ccb->ccb_h.io_ptr = io; 753 754 io->io_hdr.io_type = CTL_IO_TASK; 755 io->io_hdr.nexus.initid.id = 0; 756 io->io_hdr.nexus.targ_port = softc->port.targ_port; 757 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 758 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 759 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 760 io->taskio.task_action = CTL_TASK_BUS_RESET; 761 else 762 io->taskio.task_action = CTL_TASK_LUN_RESET; 763 764 err = ctl_queue(io); 765 if (err != CTL_RETVAL_COMPLETE) { 766 printf("%s func %d: error %d returned by " 767 "ctl_queue()!\n", __func__, 768 ccb->ccb_h.func_code, err); 769 ctl_free_io(io); 770 } 771 break; 772 } 773 case XPT_CALC_GEOMETRY: 774 cam_calc_geometry(&ccb->ccg, 1); 775 xpt_done(ccb); 776 break; 777 case XPT_PATH_INQ: { 778 struct ccb_pathinq *cpi; 779 780 cpi = &ccb->cpi; 781 782 cpi->version_num = 0; 783 cpi->hba_inquiry = PI_TAG_ABLE; 784 cpi->target_sprt = 0; 785 cpi->hba_misc = 0; 786 cpi->hba_eng_cnt = 0; 787 cpi->max_target = 1; 788 cpi->max_lun = 1024; 789 /* Do we really have a limit? */ 790 cpi->maxio = 1024 * 1024; 791 cpi->async_flags = 0; 792 cpi->hpath_id = 0; 793 cpi->initiator_id = 0; 794 795 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 796 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 797 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 798 cpi->unit_number = 0; 799 cpi->bus_id = 0; 800 cpi->base_transfer_speed = 800000; 801 cpi->protocol = PROTO_SCSI; 802 cpi->protocol_version = SCSI_REV_SPC2; 803 /* 804 * Pretend to be Fibre Channel. 805 */ 806 cpi->transport = XPORT_FC; 807 cpi->transport_version = 0; 808 cpi->xport_specific.fc.wwnn = softc->wwnn; 809 cpi->xport_specific.fc.wwpn = softc->wwpn; 810 cpi->xport_specific.fc.port = softc->port.targ_port; 811 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 812 cpi->ccb_h.status = CAM_REQ_CMP; 813 break; 814 } 815 default: 816 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 817 printf("%s: unsupported CCB type %#x\n", __func__, 818 ccb->ccb_h.func_code); 819 xpt_done(ccb); 820 break; 821 } 822} 823 824static void 825cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 826{ 827 828} 829