ctl_frontend_cam_sim.c revision 268677
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 268677 2014-07-15 16:57:30Z 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, /*master_SC*/ 1); 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 port->wwnn = softc->wwnn; 197 port->wwpn = softc->wwpn; 198 } else { 199 softc->wwnn = port->wwnn; 200 softc->wwpn = port->wwpn; 201 } 202 203 mtx_lock(&softc->lock); 204 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 205 if (softc->devq == NULL) { 206 printf("%s: error allocating devq\n", __func__); 207 retval = ENOMEM; 208 goto bailout; 209 } 210 211 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 212 softc, /*unit*/ 0, &softc->lock, 1, 213 port->num_requested_ctl_io, softc->devq); 214 if (softc->sim == NULL) { 215 printf("%s: error allocating SIM\n", __func__); 216 retval = ENOMEM; 217 goto bailout; 218 } 219 220 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 221 printf("%s: error registering SIM\n", __func__); 222 retval = ENOMEM; 223 goto bailout; 224 } 225 226 if (xpt_create_path(&softc->path, /*periph*/NULL, 227 cam_sim_path(softc->sim), 228 CAM_TARGET_WILDCARD, 229 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 230 printf("%s: error creating path\n", __func__); 231 xpt_bus_deregister(cam_sim_path(softc->sim)); 232 retval = EINVAL; 233 goto bailout; 234 } 235 236 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 237 csa.ccb_h.func_code = XPT_SASYNC_CB; 238 csa.event_enable = AC_LOST_DEVICE; 239 csa.callback = cfcs_async; 240 csa.callback_arg = softc->sim; 241 xpt_action((union ccb *)&csa); 242 243 mtx_unlock(&softc->lock); 244 245 return (retval); 246 247bailout: 248 if (softc->sim) 249 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 250 else if (softc->devq) 251 cam_simq_free(softc->devq); 252 mtx_unlock(&softc->lock); 253 mtx_destroy(&softc->lock); 254 255 return (retval); 256} 257 258static void 259cfcs_poll(struct cam_sim *sim) 260{ 261 262} 263 264static void 265cfcs_onoffline(void *arg, int online) 266{ 267 struct cfcs_softc *softc; 268 union ccb *ccb; 269 270 softc = (struct cfcs_softc *)arg; 271 272 mtx_lock(&softc->lock); 273 softc->online = online; 274 275 ccb = xpt_alloc_ccb_nowait(); 276 if (ccb == NULL) { 277 printf("%s: unable to allocate CCB for rescan\n", __func__); 278 goto bailout; 279 } 280 281 if (xpt_create_path(&ccb->ccb_h.path, NULL, 282 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 283 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 284 printf("%s: can't allocate path for rescan\n", __func__); 285 xpt_free_ccb(ccb); 286 goto bailout; 287 } 288 xpt_rescan(ccb); 289 290bailout: 291 mtx_unlock(&softc->lock); 292} 293 294static void 295cfcs_online(void *arg) 296{ 297 cfcs_onoffline(arg, /*online*/ 1); 298} 299 300static void 301cfcs_offline(void *arg) 302{ 303 cfcs_onoffline(arg, /*online*/ 0); 304} 305 306static int 307cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 308{ 309 return (0); 310} 311static int 312cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 313{ 314 return (0); 315} 316 317/* 318 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 319 * way to combine the functionality? 320 * 321 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 322 * caller's context, which will usually be the backend. That may not be a 323 * good thing. 324 */ 325static void 326cfcs_datamove(union ctl_io *io) 327{ 328 union ccb *ccb; 329 bus_dma_segment_t cam_sg_entry, *cam_sglist; 330 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 331 int cam_sg_count, ctl_sg_count, cam_sg_start; 332 int cam_sg_offset; 333 int len_to_copy, len_copied; 334 int ctl_watermark, cam_watermark; 335 int i, j; 336 337 338 cam_sg_offset = 0; 339 cam_sg_start = 0; 340 341 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 342 343 /* 344 * Note that we have a check in cfcs_action() to make sure that any 345 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 346 * is just to make sure no one removes that check without updating 347 * this code to provide the additional functionality necessary to 348 * support those modes of operation. 349 */ 350 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 351 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 352 353 /* 354 * Simplify things on both sides by putting single buffers into a 355 * single entry S/G list. 356 */ 357 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 358 case CAM_DATA_SG: { 359 int len_seen; 360 361 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 362 cam_sg_count = ccb->csio.sglist_cnt; 363 364 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 365 if ((len_seen + cam_sglist[i].ds_len) >= 366 io->scsiio.kern_rel_offset) { 367 cam_sg_start = i; 368 cam_sg_offset = io->scsiio.kern_rel_offset - 369 len_seen; 370 break; 371 } 372 len_seen += cam_sglist[i].ds_len; 373 } 374 break; 375 } 376 case CAM_DATA_VADDR: 377 cam_sglist = &cam_sg_entry; 378 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 379 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 380 cam_sg_count = 1; 381 cam_sg_start = 0; 382 cam_sg_offset = io->scsiio.kern_rel_offset; 383 break; 384 default: 385 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 386 } 387 388 if (io->scsiio.kern_sg_entries > 0) { 389 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 390 ctl_sg_count = io->scsiio.kern_sg_entries; 391 } else { 392 ctl_sglist = &ctl_sg_entry; 393 ctl_sglist->addr = io->scsiio.kern_data_ptr; 394 ctl_sglist->len = io->scsiio.kern_data_len; 395 ctl_sg_count = 1; 396 } 397 398 ctl_watermark = 0; 399 cam_watermark = cam_sg_offset; 400 len_copied = 0; 401 for (i = cam_sg_start, j = 0; 402 i < cam_sg_count && j < ctl_sg_count;) { 403 uint8_t *cam_ptr, *ctl_ptr; 404 405 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 406 ctl_sglist[j].len - ctl_watermark); 407 408 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 409 cam_ptr = cam_ptr + cam_watermark; 410 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 411 /* 412 * XXX KDM fix this! 413 */ 414 panic("need to implement bus address support"); 415#if 0 416 kern_ptr = bus_to_virt(kern_sglist[j].addr); 417#endif 418 } else 419 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 420 ctl_ptr = ctl_ptr + ctl_watermark; 421 422 ctl_watermark += len_to_copy; 423 cam_watermark += len_to_copy; 424 425 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 426 CTL_FLAG_DATA_IN) { 427 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 428 __func__, len_to_copy)); 429 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 430 __func__, cam_ptr)); 431 bcopy(ctl_ptr, cam_ptr, len_to_copy); 432 } else { 433 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 434 __func__, len_to_copy)); 435 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 436 __func__, ctl_ptr)); 437 bcopy(cam_ptr, ctl_ptr, len_to_copy); 438 } 439 440 len_copied += len_to_copy; 441 442 if (cam_sglist[i].ds_len == cam_watermark) { 443 i++; 444 cam_watermark = 0; 445 } 446 447 if (ctl_sglist[j].len == ctl_watermark) { 448 j++; 449 ctl_watermark = 0; 450 } 451 } 452 453 io->scsiio.ext_data_filled += len_copied; 454 455 io->scsiio.be_move_done(io); 456} 457 458static void 459cfcs_done(union ctl_io *io) 460{ 461 union ccb *ccb; 462 463 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 464 if (ccb == NULL) { 465 ctl_free_io(io); 466 return; 467 } 468 469 /* 470 * At this point we should have status. If we don't, that's a bug. 471 */ 472 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 473 ("invalid CTL status %#x", io->io_hdr.status)); 474 475 /* 476 * Translate CTL status to CAM status. 477 */ 478 switch (io->io_hdr.status & CTL_STATUS_MASK) { 479 case CTL_SUCCESS: 480 ccb->ccb_h.status = CAM_REQ_CMP; 481 break; 482 case CTL_SCSI_ERROR: 483 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 484 ccb->csio.scsi_status = io->scsiio.scsi_status; 485 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 486 min(io->scsiio.sense_len, ccb->csio.sense_len)); 487 if (ccb->csio.sense_len > io->scsiio.sense_len) 488 ccb->csio.sense_resid = ccb->csio.sense_len - 489 io->scsiio.sense_len; 490 else 491 ccb->csio.sense_resid = 0; 492 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 493 cfcs_max_sense) { 494 ccb->csio.sense_resid = ccb->csio.sense_len - 495 cfcs_max_sense; 496 } 497 break; 498 case CTL_CMD_ABORTED: 499 ccb->ccb_h.status = CAM_REQ_ABORTED; 500 break; 501 case CTL_ERROR: 502 default: 503 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 504 break; 505 } 506 507 xpt_done(ccb); 508 ctl_free_io(io); 509} 510 511void 512cfcs_action(struct cam_sim *sim, union ccb *ccb) 513{ 514 struct cfcs_softc *softc; 515 int err; 516 517 softc = (struct cfcs_softc *)cam_sim_softc(sim); 518 mtx_assert(&softc->lock, MA_OWNED); 519 520 switch (ccb->ccb_h.func_code) { 521 case XPT_SCSI_IO: { 522 union ctl_io *io; 523 struct ccb_scsiio *csio; 524 525 csio = &ccb->csio; 526 527 /* 528 * Catch CCB flags, like physical address flags, that 529 * indicate situations we currently can't handle. 530 */ 531 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 532 ccb->ccb_h.status = CAM_REQ_INVALID; 533 printf("%s: bad CCB flags %#x (all flags %#x)\n", 534 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 535 ccb->ccb_h.flags); 536 xpt_done(ccb); 537 return; 538 } 539 540 /* 541 * If we aren't online, there are no devices to see. 542 */ 543 if (softc->online == 0) { 544 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 545 xpt_done(ccb); 546 return; 547 } 548 549 io = ctl_alloc_io(softc->port.ctl_pool_ref); 550 if (io == NULL) { 551 printf("%s: can't allocate ctl_io\n", __func__); 552 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 553 xpt_freeze_devq(ccb->ccb_h.path, 1); 554 xpt_done(ccb); 555 return; 556 } 557 ctl_zero_io(io); 558 /* Save pointers on both sides */ 559 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 560 ccb->ccb_h.io_ptr = io; 561 562 /* 563 * Only SCSI I/O comes down this path, resets, etc. come 564 * down via the XPT_RESET_BUS/LUN CCBs below. 565 */ 566 io->io_hdr.io_type = CTL_IO_SCSI; 567 io->io_hdr.nexus.initid.id = 1; 568 io->io_hdr.nexus.targ_port = softc->port.targ_port; 569 /* 570 * XXX KDM how do we handle target IDs? 571 */ 572 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 573 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 574 /* 575 * This tag scheme isn't the best, since we could in theory 576 * have a very long-lived I/O and tag collision, especially 577 * in a high I/O environment. But it should work well 578 * enough for now. Since we're using unsigned ints, 579 * they'll just wrap around. 580 */ 581 io->scsiio.tag_num = softc->cur_tag_num++; 582 csio->tag_id = io->scsiio.tag_num; 583 switch (csio->tag_action) { 584 case CAM_TAG_ACTION_NONE: 585 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 586 break; 587 case MSG_SIMPLE_TASK: 588 io->scsiio.tag_type = CTL_TAG_SIMPLE; 589 break; 590 case MSG_HEAD_OF_QUEUE_TASK: 591 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 592 break; 593 case MSG_ORDERED_TASK: 594 io->scsiio.tag_type = CTL_TAG_ORDERED; 595 break; 596 case MSG_ACA_TASK: 597 io->scsiio.tag_type = CTL_TAG_ACA; 598 break; 599 default: 600 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 601 printf("%s: unhandled tag type %#x!!\n", __func__, 602 csio->tag_action); 603 break; 604 } 605 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 606 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 607 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 608 } 609 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 610 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 611 io->scsiio.cdb_len); 612 613 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 } else { 620 ccb->ccb_h.status |= CAM_SIM_QUEUED; 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(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(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