ctl_frontend_cam_sim.c revision 268676
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 268676 2014-07-15 16:55:13Z 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_frontend fe; 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 char lock_desc[32]; 84 uint64_t wwnn; 85 uint64_t wwpn; 86 uint32_t cur_tag_num; 87 int online; 88}; 89 90/* 91 * We can't handle CCBs with these flags. For the most part, we just don't 92 * handle physical addresses yet. That would require mapping things in 93 * order to do the copy. 94 */ 95#define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 96 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 97 CAM_SENSE_PHYS) 98 99int cfcs_init(void); 100void cfcs_shutdown(void); 101static void cfcs_poll(struct cam_sim *sim); 102static void cfcs_online(void *arg); 103static void cfcs_offline(void *arg); 104static int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id); 105static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id); 106static void cfcs_datamove(union ctl_io *io); 107static void cfcs_done(union ctl_io *io); 108void cfcs_action(struct cam_sim *sim, union ccb *ccb); 109static void cfcs_async(void *callback_arg, uint32_t code, 110 struct cam_path *path, void *arg); 111 112struct cfcs_softc cfcs_softc; 113/* 114 * This is primarly intended to allow for error injection to test the CAM 115 * sense data and sense residual handling code. This sets the maximum 116 * amount of SCSI sense data that we will report to CAM. 117 */ 118static int cfcs_max_sense = sizeof(struct scsi_sense_data); 119 120SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 121 "CAM Target Layer SIM frontend"); 122SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 123 &cfcs_max_sense, 0, "Maximum sense data size"); 124 125static int cfcs_module_event_handler(module_t, int /*modeventtype_t*/, void *); 126 127static moduledata_t cfcs_moduledata = { 128 "ctlcfcs", 129 cfcs_module_event_handler, 130 NULL 131}; 132 133DECLARE_MODULE(ctlcfcs, cfcs_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 134MODULE_VERSION(ctlcfcs, 1); 135MODULE_DEPEND(ctlcfi, ctl, 1, 1, 1); 136MODULE_DEPEND(ctlcfi, cam, 1, 1, 1); 137 138int 139cfcs_init(void) 140{ 141 struct cfcs_softc *softc; 142 struct ccb_setasync csa; 143 struct ctl_frontend *fe; 144#ifdef NEEDTOPORT 145 char wwnn[8]; 146#endif 147 int retval; 148 149 softc = &cfcs_softc; 150 retval = 0; 151 bzero(softc, sizeof(*softc)); 152 sprintf(softc->lock_desc, "ctl2cam"); 153 mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF); 154 fe = &softc->fe; 155 156 fe->port_type = CTL_PORT_INTERNAL; 157 /* XXX KDM what should the real number be here? */ 158 fe->num_requested_ctl_io = 4096; 159 snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam"); 160 fe->port_name = softc->port_name; 161 fe->port_online = cfcs_online; 162 fe->port_offline = cfcs_offline; 163 fe->onoff_arg = softc; 164 fe->lun_enable = cfcs_lun_enable; 165 fe->lun_disable = cfcs_lun_disable; 166 fe->targ_lun_arg = softc; 167 fe->fe_datamove = cfcs_datamove; 168 fe->fe_done = cfcs_done; 169 170 /* XXX KDM what should we report here? */ 171 /* XXX These should probably be fetched from CTL. */ 172 fe->max_targets = 1; 173 fe->max_target_id = 15; 174 175 retval = ctl_frontend_register(fe, /*master_SC*/ 1); 176 if (retval != 0) { 177 printf("%s: ctl_frontend_register() failed with error %d!\n", 178 __func__, retval); 179 mtx_destroy(&softc->lock); 180 return (retval); 181 } 182 183 /* 184 * Get the WWNN out of the database, and create a WWPN as well. 185 */ 186#ifdef NEEDTOPORT 187 ddb_GetWWNN((char *)wwnn); 188 softc->wwnn = be64dec(wwnn); 189 softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff); 190#endif 191 192 /* 193 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 194 * ahead and set something random. 195 */ 196 if (fe->wwnn == 0) { 197 uint64_t random_bits; 198 199 arc4rand(&random_bits, sizeof(random_bits), 0); 200 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 201 /* Company ID */ 0x5000000000000000ULL | 202 /* NL-Port */ 0x0300; 203 softc->wwpn = softc->wwnn + fe->targ_port + 1; 204 fe->wwnn = softc->wwnn; 205 fe->wwpn = softc->wwpn; 206 } else { 207 softc->wwnn = fe->wwnn; 208 softc->wwpn = fe->wwpn; 209 } 210 211 mtx_lock(&softc->lock); 212 softc->devq = cam_simq_alloc(fe->num_requested_ctl_io); 213 if (softc->devq == NULL) { 214 printf("%s: error allocating devq\n", __func__); 215 retval = ENOMEM; 216 goto bailout; 217 } 218 219 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 220 softc, /*unit*/ 0, &softc->lock, 1, 221 fe->num_requested_ctl_io, softc->devq); 222 if (softc->sim == NULL) { 223 printf("%s: error allocating SIM\n", __func__); 224 retval = ENOMEM; 225 goto bailout; 226 } 227 228 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 229 printf("%s: error registering SIM\n", __func__); 230 retval = ENOMEM; 231 goto bailout; 232 } 233 234 if (xpt_create_path(&softc->path, /*periph*/NULL, 235 cam_sim_path(softc->sim), 236 CAM_TARGET_WILDCARD, 237 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 238 printf("%s: error creating path\n", __func__); 239 xpt_bus_deregister(cam_sim_path(softc->sim)); 240 retval = EINVAL; 241 goto bailout; 242 } 243 244 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 245 csa.ccb_h.func_code = XPT_SASYNC_CB; 246 csa.event_enable = AC_LOST_DEVICE; 247 csa.callback = cfcs_async; 248 csa.callback_arg = softc->sim; 249 xpt_action((union ccb *)&csa); 250 251 mtx_unlock(&softc->lock); 252 253 return (retval); 254 255bailout: 256 if (softc->sim) 257 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 258 else if (softc->devq) 259 cam_simq_free(softc->devq); 260 mtx_unlock(&softc->lock); 261 mtx_destroy(&softc->lock); 262 263 return (retval); 264} 265 266static void 267cfcs_poll(struct cam_sim *sim) 268{ 269 270} 271 272void 273cfcs_shutdown(void) 274{ 275 276} 277 278static int 279cfcs_module_event_handler(module_t mod, int what, void *arg) 280{ 281 282 switch (what) { 283 case MOD_LOAD: 284 return (cfcs_init()); 285 case MOD_UNLOAD: 286 return (EBUSY); 287 default: 288 return (EOPNOTSUPP); 289 } 290} 291 292static void 293cfcs_onoffline(void *arg, int online) 294{ 295 struct cfcs_softc *softc; 296 union ccb *ccb; 297 298 softc = (struct cfcs_softc *)arg; 299 300 mtx_lock(&softc->lock); 301 softc->online = online; 302 303 ccb = xpt_alloc_ccb_nowait(); 304 if (ccb == NULL) { 305 printf("%s: unable to allocate CCB for rescan\n", __func__); 306 goto bailout; 307 } 308 309 if (xpt_create_path(&ccb->ccb_h.path, NULL, 310 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 311 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 312 printf("%s: can't allocate path for rescan\n", __func__); 313 xpt_free_ccb(ccb); 314 goto bailout; 315 } 316 xpt_rescan(ccb); 317 318bailout: 319 mtx_unlock(&softc->lock); 320} 321 322static void 323cfcs_online(void *arg) 324{ 325 cfcs_onoffline(arg, /*online*/ 1); 326} 327 328static void 329cfcs_offline(void *arg) 330{ 331 cfcs_onoffline(arg, /*online*/ 0); 332} 333 334static int 335cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 336{ 337 return (0); 338} 339static int 340cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 341{ 342 return (0); 343} 344 345/* 346 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 347 * way to combine the functionality? 348 * 349 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 350 * caller's context, which will usually be the backend. That may not be a 351 * good thing. 352 */ 353static void 354cfcs_datamove(union ctl_io *io) 355{ 356 union ccb *ccb; 357 bus_dma_segment_t cam_sg_entry, *cam_sglist; 358 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 359 int cam_sg_count, ctl_sg_count, cam_sg_start; 360 int cam_sg_offset; 361 int len_to_copy, len_copied; 362 int ctl_watermark, cam_watermark; 363 int i, j; 364 365 366 cam_sg_offset = 0; 367 cam_sg_start = 0; 368 369 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 370 371 /* 372 * Note that we have a check in cfcs_action() to make sure that any 373 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 374 * is just to make sure no one removes that check without updating 375 * this code to provide the additional functionality necessary to 376 * support those modes of operation. 377 */ 378 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 379 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 380 381 /* 382 * Simplify things on both sides by putting single buffers into a 383 * single entry S/G list. 384 */ 385 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 386 case CAM_DATA_SG: { 387 int len_seen; 388 389 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 390 cam_sg_count = ccb->csio.sglist_cnt; 391 392 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 393 if ((len_seen + cam_sglist[i].ds_len) >= 394 io->scsiio.kern_rel_offset) { 395 cam_sg_start = i; 396 cam_sg_offset = io->scsiio.kern_rel_offset - 397 len_seen; 398 break; 399 } 400 len_seen += cam_sglist[i].ds_len; 401 } 402 break; 403 } 404 case CAM_DATA_VADDR: 405 cam_sglist = &cam_sg_entry; 406 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 407 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 408 cam_sg_count = 1; 409 cam_sg_start = 0; 410 cam_sg_offset = io->scsiio.kern_rel_offset; 411 break; 412 default: 413 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 414 } 415 416 if (io->scsiio.kern_sg_entries > 0) { 417 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 418 ctl_sg_count = io->scsiio.kern_sg_entries; 419 } else { 420 ctl_sglist = &ctl_sg_entry; 421 ctl_sglist->addr = io->scsiio.kern_data_ptr; 422 ctl_sglist->len = io->scsiio.kern_data_len; 423 ctl_sg_count = 1; 424 } 425 426 ctl_watermark = 0; 427 cam_watermark = cam_sg_offset; 428 len_copied = 0; 429 for (i = cam_sg_start, j = 0; 430 i < cam_sg_count && j < ctl_sg_count;) { 431 uint8_t *cam_ptr, *ctl_ptr; 432 433 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 434 ctl_sglist[j].len - ctl_watermark); 435 436 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 437 cam_ptr = cam_ptr + cam_watermark; 438 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 439 /* 440 * XXX KDM fix this! 441 */ 442 panic("need to implement bus address support"); 443#if 0 444 kern_ptr = bus_to_virt(kern_sglist[j].addr); 445#endif 446 } else 447 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 448 ctl_ptr = ctl_ptr + ctl_watermark; 449 450 ctl_watermark += len_to_copy; 451 cam_watermark += len_to_copy; 452 453 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 454 CTL_FLAG_DATA_IN) { 455 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 456 __func__, len_to_copy)); 457 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 458 __func__, cam_ptr)); 459 bcopy(ctl_ptr, cam_ptr, len_to_copy); 460 } else { 461 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 462 __func__, len_to_copy)); 463 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 464 __func__, ctl_ptr)); 465 bcopy(cam_ptr, ctl_ptr, len_to_copy); 466 } 467 468 len_copied += len_to_copy; 469 470 if (cam_sglist[i].ds_len == cam_watermark) { 471 i++; 472 cam_watermark = 0; 473 } 474 475 if (ctl_sglist[j].len == ctl_watermark) { 476 j++; 477 ctl_watermark = 0; 478 } 479 } 480 481 io->scsiio.ext_data_filled += len_copied; 482 483 io->scsiio.be_move_done(io); 484} 485 486static void 487cfcs_done(union ctl_io *io) 488{ 489 union ccb *ccb; 490 491 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 492 if (ccb == NULL) { 493 ctl_free_io(io); 494 return; 495 } 496 497 /* 498 * At this point we should have status. If we don't, that's a bug. 499 */ 500 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 501 ("invalid CTL status %#x", io->io_hdr.status)); 502 503 /* 504 * Translate CTL status to CAM status. 505 */ 506 switch (io->io_hdr.status & CTL_STATUS_MASK) { 507 case CTL_SUCCESS: 508 ccb->ccb_h.status = CAM_REQ_CMP; 509 break; 510 case CTL_SCSI_ERROR: 511 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 512 ccb->csio.scsi_status = io->scsiio.scsi_status; 513 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 514 min(io->scsiio.sense_len, ccb->csio.sense_len)); 515 if (ccb->csio.sense_len > io->scsiio.sense_len) 516 ccb->csio.sense_resid = ccb->csio.sense_len - 517 io->scsiio.sense_len; 518 else 519 ccb->csio.sense_resid = 0; 520 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 521 cfcs_max_sense) { 522 ccb->csio.sense_resid = ccb->csio.sense_len - 523 cfcs_max_sense; 524 } 525 break; 526 case CTL_CMD_ABORTED: 527 ccb->ccb_h.status = CAM_REQ_ABORTED; 528 break; 529 case CTL_ERROR: 530 default: 531 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 532 break; 533 } 534 535 xpt_done(ccb); 536 ctl_free_io(io); 537} 538 539void 540cfcs_action(struct cam_sim *sim, union ccb *ccb) 541{ 542 struct cfcs_softc *softc; 543 int err; 544 545 softc = (struct cfcs_softc *)cam_sim_softc(sim); 546 mtx_assert(&softc->lock, MA_OWNED); 547 548 switch (ccb->ccb_h.func_code) { 549 case XPT_SCSI_IO: { 550 union ctl_io *io; 551 struct ccb_scsiio *csio; 552 553 csio = &ccb->csio; 554 555 /* 556 * Catch CCB flags, like physical address flags, that 557 * indicate situations we currently can't handle. 558 */ 559 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 560 ccb->ccb_h.status = CAM_REQ_INVALID; 561 printf("%s: bad CCB flags %#x (all flags %#x)\n", 562 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 563 ccb->ccb_h.flags); 564 xpt_done(ccb); 565 return; 566 } 567 568 /* 569 * If we aren't online, there are no devices to see. 570 */ 571 if (softc->online == 0) { 572 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 573 xpt_done(ccb); 574 return; 575 } 576 577 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 578 if (io == NULL) { 579 printf("%s: can't allocate ctl_io\n", __func__); 580 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 581 xpt_freeze_devq(ccb->ccb_h.path, 1); 582 xpt_done(ccb); 583 return; 584 } 585 ctl_zero_io(io); 586 /* Save pointers on both sides */ 587 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 588 ccb->ccb_h.io_ptr = io; 589 590 /* 591 * Only SCSI I/O comes down this path, resets, etc. come 592 * down via the XPT_RESET_BUS/LUN CCBs below. 593 */ 594 io->io_hdr.io_type = CTL_IO_SCSI; 595 io->io_hdr.nexus.initid.id = 1; 596 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 597 /* 598 * XXX KDM how do we handle target IDs? 599 */ 600 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 601 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 602 /* 603 * This tag scheme isn't the best, since we could in theory 604 * have a very long-lived I/O and tag collision, especially 605 * in a high I/O environment. But it should work well 606 * enough for now. Since we're using unsigned ints, 607 * they'll just wrap around. 608 */ 609 io->scsiio.tag_num = softc->cur_tag_num++; 610 csio->tag_id = io->scsiio.tag_num; 611 switch (csio->tag_action) { 612 case CAM_TAG_ACTION_NONE: 613 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 614 break; 615 case MSG_SIMPLE_TASK: 616 io->scsiio.tag_type = CTL_TAG_SIMPLE; 617 break; 618 case MSG_HEAD_OF_QUEUE_TASK: 619 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 620 break; 621 case MSG_ORDERED_TASK: 622 io->scsiio.tag_type = CTL_TAG_ORDERED; 623 break; 624 case MSG_ACA_TASK: 625 io->scsiio.tag_type = CTL_TAG_ACA; 626 break; 627 default: 628 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 629 printf("%s: unhandled tag type %#x!!\n", __func__, 630 csio->tag_action); 631 break; 632 } 633 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 634 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 635 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 636 } 637 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 638 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 639 io->scsiio.cdb_len); 640 641 err = ctl_queue(io); 642 if (err != CTL_RETVAL_COMPLETE) { 643 printf("%s: func %d: error %d returned by " 644 "ctl_queue()!\n", __func__, 645 ccb->ccb_h.func_code, err); 646 ctl_free_io(io); 647 } else { 648 ccb->ccb_h.status |= CAM_SIM_QUEUED; 649 } 650 break; 651 } 652 case XPT_ABORT: { 653 union ctl_io *io; 654 union ccb *abort_ccb; 655 656 abort_ccb = ccb->cab.abort_ccb; 657 658 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 659 ccb->ccb_h.status = CAM_REQ_INVALID; 660 xpt_done(ccb); 661 } 662 663 /* 664 * If we aren't online, there are no devices to talk to. 665 */ 666 if (softc->online == 0) { 667 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 668 xpt_done(ccb); 669 return; 670 } 671 672 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 673 if (io == NULL) { 674 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 675 xpt_freeze_devq(ccb->ccb_h.path, 1); 676 xpt_done(ccb); 677 return; 678 } 679 680 ctl_zero_io(io); 681 /* Save pointers on both sides */ 682 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 683 ccb->ccb_h.io_ptr = io; 684 685 io->io_hdr.io_type = CTL_IO_TASK; 686 io->io_hdr.nexus.initid.id = 1; 687 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 688 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 689 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 690 io->taskio.task_action = CTL_TASK_ABORT_TASK; 691 io->taskio.tag_num = abort_ccb->csio.tag_id; 692 switch (abort_ccb->csio.tag_action) { 693 case CAM_TAG_ACTION_NONE: 694 io->taskio.tag_type = CTL_TAG_UNTAGGED; 695 break; 696 case MSG_SIMPLE_TASK: 697 io->taskio.tag_type = CTL_TAG_SIMPLE; 698 break; 699 case MSG_HEAD_OF_QUEUE_TASK: 700 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 701 break; 702 case MSG_ORDERED_TASK: 703 io->taskio.tag_type = CTL_TAG_ORDERED; 704 break; 705 case MSG_ACA_TASK: 706 io->taskio.tag_type = CTL_TAG_ACA; 707 break; 708 default: 709 io->taskio.tag_type = CTL_TAG_UNTAGGED; 710 printf("%s: unhandled tag type %#x!!\n", __func__, 711 abort_ccb->csio.tag_action); 712 break; 713 } 714 err = ctl_queue(io); 715 if (err != CTL_RETVAL_COMPLETE) { 716 printf("%s func %d: error %d returned by " 717 "ctl_queue()!\n", __func__, 718 ccb->ccb_h.func_code, err); 719 ctl_free_io(io); 720 } 721 break; 722 } 723 case XPT_GET_TRAN_SETTINGS: { 724 struct ccb_trans_settings *cts; 725 struct ccb_trans_settings_scsi *scsi; 726 struct ccb_trans_settings_fc *fc; 727 728 cts = &ccb->cts; 729 scsi = &cts->proto_specific.scsi; 730 fc = &cts->xport_specific.fc; 731 732 733 cts->protocol = PROTO_SCSI; 734 cts->protocol_version = SCSI_REV_SPC2; 735 cts->transport = XPORT_FC; 736 cts->transport_version = 0; 737 738 scsi->valid = CTS_SCSI_VALID_TQ; 739 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 740 fc->valid = CTS_FC_VALID_SPEED; 741 fc->bitrate = 800000; 742 fc->wwnn = softc->wwnn; 743 fc->wwpn = softc->wwpn; 744 fc->port = softc->fe.targ_port; 745 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 746 CTS_FC_VALID_PORT; 747 ccb->ccb_h.status = CAM_REQ_CMP; 748 break; 749 } 750 case XPT_SET_TRAN_SETTINGS: 751 /* XXX KDM should we actually do something here? */ 752 ccb->ccb_h.status = CAM_REQ_CMP; 753 break; 754 case XPT_RESET_BUS: 755 case XPT_RESET_DEV: { 756 union ctl_io *io; 757 758 /* 759 * If we aren't online, there are no devices to talk to. 760 */ 761 if (softc->online == 0) { 762 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 763 xpt_done(ccb); 764 return; 765 } 766 767 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 768 if (io == NULL) { 769 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 770 xpt_freeze_devq(ccb->ccb_h.path, 1); 771 xpt_done(ccb); 772 return; 773 } 774 775 ctl_zero_io(io); 776 /* Save pointers on both sides */ 777 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 778 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 779 ccb->ccb_h.io_ptr = io; 780 781 io->io_hdr.io_type = CTL_IO_TASK; 782 io->io_hdr.nexus.initid.id = 0; 783 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 784 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 785 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 786 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 787 io->taskio.task_action = CTL_TASK_BUS_RESET; 788 else 789 io->taskio.task_action = CTL_TASK_LUN_RESET; 790 791 err = ctl_queue(io); 792 if (err != CTL_RETVAL_COMPLETE) { 793 printf("%s func %d: error %d returned by " 794 "ctl_queue()!\n", __func__, 795 ccb->ccb_h.func_code, err); 796 ctl_free_io(io); 797 } 798 break; 799 } 800 case XPT_CALC_GEOMETRY: 801 cam_calc_geometry(&ccb->ccg, 1); 802 xpt_done(ccb); 803 break; 804 case XPT_PATH_INQ: { 805 struct ccb_pathinq *cpi; 806 807 cpi = &ccb->cpi; 808 809 cpi->version_num = 0; 810 cpi->hba_inquiry = PI_TAG_ABLE; 811 cpi->target_sprt = 0; 812 cpi->hba_misc = 0; 813 cpi->hba_eng_cnt = 0; 814 cpi->max_target = 1; 815 cpi->max_lun = 1024; 816 /* Do we really have a limit? */ 817 cpi->maxio = 1024 * 1024; 818 cpi->async_flags = 0; 819 cpi->hpath_id = 0; 820 cpi->initiator_id = 0; 821 822 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 823 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 824 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 825 cpi->unit_number = 0; 826 cpi->bus_id = 0; 827 cpi->base_transfer_speed = 800000; 828 cpi->protocol = PROTO_SCSI; 829 cpi->protocol_version = SCSI_REV_SPC2; 830 /* 831 * Pretend to be Fibre Channel. 832 */ 833 cpi->transport = XPORT_FC; 834 cpi->transport_version = 0; 835 cpi->xport_specific.fc.wwnn = softc->wwnn; 836 cpi->xport_specific.fc.wwpn = softc->wwpn; 837 cpi->xport_specific.fc.port = softc->fe.targ_port; 838 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 839 cpi->ccb_h.status = CAM_REQ_CMP; 840 break; 841 } 842 default: 843 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 844 printf("%s: unsupported CCB type %#x\n", __func__, 845 ccb->ccb_h.func_code); 846 xpt_done(ccb); 847 break; 848 } 849} 850 851static void 852cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 853{ 854 855} 856