ctl_frontend_cam_sim.c revision 265491
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 265491 2014-05-07 06:20:35Z trasz $"); 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_targ_enable(void *arg, struct ctl_id targ_id); 105static int cfcs_targ_disable(void *arg, struct ctl_id targ_id); 106static int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id); 107static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id); 108static void cfcs_datamove(union ctl_io *io); 109static void cfcs_done(union ctl_io *io); 110void cfcs_action(struct cam_sim *sim, union ccb *ccb); 111static void cfcs_async(void *callback_arg, uint32_t code, 112 struct cam_path *path, void *arg); 113 114struct cfcs_softc cfcs_softc; 115/* 116 * This is primarly intended to allow for error injection to test the CAM 117 * sense data and sense residual handling code. This sets the maximum 118 * amount of SCSI sense data that we will report to CAM. 119 */ 120static int cfcs_max_sense = sizeof(struct scsi_sense_data); 121 122SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 123 "CAM Target Layer SIM frontend"); 124SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 125 &cfcs_max_sense, 0, "Maximum sense data size"); 126 127static int cfcs_module_event_handler(module_t, int /*modeventtype_t*/, void *); 128 129static moduledata_t cfcs_moduledata = { 130 "ctlcfcs", 131 cfcs_module_event_handler, 132 NULL 133}; 134 135DECLARE_MODULE(ctlcfcs, cfcs_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 136MODULE_VERSION(ctlcfcs, 1); 137MODULE_DEPEND(ctlcfi, ctl, 1, 1, 1); 138MODULE_DEPEND(ctlcfi, cam, 1, 1, 1); 139 140int 141cfcs_init(void) 142{ 143 struct cfcs_softc *softc; 144 struct ccb_setasync csa; 145 struct ctl_frontend *fe; 146#ifdef NEEDTOPORT 147 char wwnn[8]; 148#endif 149 int retval; 150 151 softc = &cfcs_softc; 152 retval = 0; 153 bzero(softc, sizeof(*softc)); 154 sprintf(softc->lock_desc, "ctl2cam"); 155 mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF); 156 fe = &softc->fe; 157 158 fe->port_type = CTL_PORT_INTERNAL; 159 /* XXX KDM what should the real number be here? */ 160 fe->num_requested_ctl_io = 4096; 161 snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam"); 162 fe->port_name = softc->port_name; 163 fe->port_online = cfcs_online; 164 fe->port_offline = cfcs_offline; 165 fe->onoff_arg = softc; 166 fe->targ_enable = cfcs_targ_enable; 167 fe->targ_disable = cfcs_targ_disable; 168 fe->lun_enable = cfcs_lun_enable; 169 fe->lun_disable = cfcs_lun_disable; 170 fe->targ_lun_arg = softc; 171 fe->fe_datamove = cfcs_datamove; 172 fe->fe_done = cfcs_done; 173 174 /* XXX KDM what should we report here? */ 175 /* XXX These should probably be fetched from CTL. */ 176 fe->max_targets = 1; 177 fe->max_target_id = 15; 178 179 retval = ctl_frontend_register(fe, /*master_SC*/ 1); 180 if (retval != 0) { 181 printf("%s: ctl_frontend_register() failed with error %d!\n", 182 __func__, retval); 183 mtx_destroy(&softc->lock); 184 return (retval); 185 } 186 187 /* 188 * Get the WWNN out of the database, and create a WWPN as well. 189 */ 190#ifdef NEEDTOPORT 191 ddb_GetWWNN((char *)wwnn); 192 softc->wwnn = be64dec(wwnn); 193 softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff); 194#endif 195 196 /* 197 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 198 * ahead and set something random. 199 */ 200 if (fe->wwnn == 0) { 201 uint64_t random_bits; 202 203 arc4rand(&random_bits, sizeof(random_bits), 0); 204 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 205 /* Company ID */ 0x5000000000000000ULL | 206 /* NL-Port */ 0x0300; 207 softc->wwpn = softc->wwnn + fe->targ_port + 1; 208 fe->wwnn = softc->wwnn; 209 fe->wwpn = softc->wwpn; 210 } else { 211 softc->wwnn = fe->wwnn; 212 softc->wwpn = fe->wwpn; 213 } 214 215 mtx_lock(&softc->lock); 216 softc->devq = cam_simq_alloc(fe->num_requested_ctl_io); 217 if (softc->devq == NULL) { 218 printf("%s: error allocating devq\n", __func__); 219 retval = ENOMEM; 220 goto bailout; 221 } 222 223 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 224 softc, /*unit*/ 0, &softc->lock, 1, 225 fe->num_requested_ctl_io, softc->devq); 226 if (softc->sim == NULL) { 227 printf("%s: error allocating SIM\n", __func__); 228 retval = ENOMEM; 229 goto bailout; 230 } 231 232 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 233 printf("%s: error registering SIM\n", __func__); 234 retval = ENOMEM; 235 goto bailout; 236 } 237 238 if (xpt_create_path(&softc->path, /*periph*/NULL, 239 cam_sim_path(softc->sim), 240 CAM_TARGET_WILDCARD, 241 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 242 printf("%s: error creating path\n", __func__); 243 xpt_bus_deregister(cam_sim_path(softc->sim)); 244 retval = EINVAL; 245 goto bailout; 246 } 247 248 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 249 csa.ccb_h.func_code = XPT_SASYNC_CB; 250 csa.event_enable = AC_LOST_DEVICE; 251 csa.callback = cfcs_async; 252 csa.callback_arg = softc->sim; 253 xpt_action((union ccb *)&csa); 254 255 mtx_unlock(&softc->lock); 256 257 return (retval); 258 259bailout: 260 if (softc->sim) 261 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 262 else if (softc->devq) 263 cam_simq_free(softc->devq); 264 mtx_unlock(&softc->lock); 265 mtx_destroy(&softc->lock); 266 267 return (retval); 268} 269 270static void 271cfcs_poll(struct cam_sim *sim) 272{ 273 274} 275 276void 277cfcs_shutdown(void) 278{ 279 280} 281 282static int 283cfcs_module_event_handler(module_t mod, int what, void *arg) 284{ 285 286 switch (what) { 287 case MOD_LOAD: 288 return (cfcs_init()); 289 case MOD_UNLOAD: 290 return (EBUSY); 291 default: 292 return (EOPNOTSUPP); 293 } 294} 295 296static void 297cfcs_onoffline(void *arg, int online) 298{ 299 struct cfcs_softc *softc; 300 union ccb *ccb; 301 302 softc = (struct cfcs_softc *)arg; 303 304 mtx_lock(&softc->lock); 305 softc->online = online; 306 307 ccb = xpt_alloc_ccb_nowait(); 308 if (ccb == NULL) { 309 printf("%s: unable to allocate CCB for rescan\n", __func__); 310 goto bailout; 311 } 312 313 if (xpt_create_path(&ccb->ccb_h.path, NULL, 314 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 315 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 316 printf("%s: can't allocate path for rescan\n", __func__); 317 xpt_free_ccb(ccb); 318 goto bailout; 319 } 320 xpt_rescan(ccb); 321 322bailout: 323 mtx_unlock(&softc->lock); 324} 325 326static void 327cfcs_online(void *arg) 328{ 329 cfcs_onoffline(arg, /*online*/ 1); 330} 331 332static void 333cfcs_offline(void *arg) 334{ 335 cfcs_onoffline(arg, /*online*/ 0); 336} 337 338static int 339cfcs_targ_enable(void *arg, struct ctl_id targ_id) 340{ 341 return (0); 342} 343 344static int 345cfcs_targ_disable(void *arg, struct ctl_id targ_id) 346{ 347 return (0); 348} 349 350static int 351cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 352{ 353 return (0); 354} 355static int 356cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 357{ 358 return (0); 359} 360 361/* 362 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 363 * way to combine the functionality? 364 * 365 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 366 * caller's context, which will usually be the backend. That may not be a 367 * good thing. 368 */ 369static void 370cfcs_datamove(union ctl_io *io) 371{ 372 union ccb *ccb; 373 bus_dma_segment_t cam_sg_entry, *cam_sglist; 374 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 375 int cam_sg_count, ctl_sg_count, cam_sg_start; 376 int cam_sg_offset; 377 int len_to_copy, len_copied; 378 int ctl_watermark, cam_watermark; 379 int i, j; 380 381 382 cam_sg_offset = 0; 383 cam_sg_start = 0; 384 385 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 386 387 /* 388 * Note that we have a check in cfcs_action() to make sure that any 389 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 390 * is just to make sure no one removes that check without updating 391 * this code to provide the additional functionality necessary to 392 * support those modes of operation. 393 */ 394 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 395 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 396 397 /* 398 * Simplify things on both sides by putting single buffers into a 399 * single entry S/G list. 400 */ 401 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 402 case CAM_DATA_SG: { 403 int len_seen; 404 405 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 406 cam_sg_count = ccb->csio.sglist_cnt; 407 408 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 409 if ((len_seen + cam_sglist[i].ds_len) >= 410 io->scsiio.kern_rel_offset) { 411 cam_sg_start = i; 412 cam_sg_offset = io->scsiio.kern_rel_offset - 413 len_seen; 414 break; 415 } 416 len_seen += cam_sglist[i].ds_len; 417 } 418 break; 419 } 420 case CAM_DATA_VADDR: 421 cam_sglist = &cam_sg_entry; 422 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 423 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 424 cam_sg_count = 1; 425 cam_sg_start = 0; 426 cam_sg_offset = io->scsiio.kern_rel_offset; 427 break; 428 default: 429 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 430 } 431 432 if (io->scsiio.kern_sg_entries > 0) { 433 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 434 ctl_sg_count = io->scsiio.kern_sg_entries; 435 } else { 436 ctl_sglist = &ctl_sg_entry; 437 ctl_sglist->addr = io->scsiio.kern_data_ptr; 438 ctl_sglist->len = io->scsiio.kern_data_len; 439 ctl_sg_count = 1; 440 } 441 442 ctl_watermark = 0; 443 cam_watermark = cam_sg_offset; 444 len_copied = 0; 445 for (i = cam_sg_start, j = 0; 446 i < cam_sg_count && j < ctl_sg_count;) { 447 uint8_t *cam_ptr, *ctl_ptr; 448 449 len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 450 ctl_sglist[j].len - ctl_watermark); 451 452 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 453 cam_ptr = cam_ptr + cam_watermark; 454 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 455 /* 456 * XXX KDM fix this! 457 */ 458 panic("need to implement bus address support"); 459#if 0 460 kern_ptr = bus_to_virt(kern_sglist[j].addr); 461#endif 462 } else 463 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 464 ctl_ptr = ctl_ptr + ctl_watermark; 465 466 ctl_watermark += len_to_copy; 467 cam_watermark += len_to_copy; 468 469 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 470 CTL_FLAG_DATA_IN) { 471 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 472 __func__, len_to_copy)); 473 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 474 __func__, cam_ptr)); 475 bcopy(ctl_ptr, cam_ptr, len_to_copy); 476 } else { 477 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 478 __func__, len_to_copy)); 479 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 480 __func__, ctl_ptr)); 481 bcopy(cam_ptr, ctl_ptr, len_to_copy); 482 } 483 484 len_copied += len_to_copy; 485 486 if (cam_sglist[i].ds_len == cam_watermark) { 487 i++; 488 cam_watermark = 0; 489 } 490 491 if (ctl_sglist[j].len == ctl_watermark) { 492 j++; 493 ctl_watermark = 0; 494 } 495 } 496 497 io->scsiio.ext_data_filled += len_copied; 498 499 io->scsiio.be_move_done(io); 500} 501 502static void 503cfcs_done(union ctl_io *io) 504{ 505 union ccb *ccb; 506 507 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 508 509 /* 510 * At this point we should have status. If we don't, that's a bug. 511 */ 512 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 513 ("invalid CTL status %#x", io->io_hdr.status)); 514 515 /* 516 * Translate CTL status to CAM status. 517 */ 518 switch (io->io_hdr.status & CTL_STATUS_MASK) { 519 case CTL_SUCCESS: 520 ccb->ccb_h.status = CAM_REQ_CMP; 521 break; 522 case CTL_SCSI_ERROR: 523 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 524 ccb->csio.scsi_status = io->scsiio.scsi_status; 525 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 526 min(io->scsiio.sense_len, ccb->csio.sense_len)); 527 if (ccb->csio.sense_len > io->scsiio.sense_len) 528 ccb->csio.sense_resid = ccb->csio.sense_len - 529 io->scsiio.sense_len; 530 else 531 ccb->csio.sense_resid = 0; 532 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 533 cfcs_max_sense) { 534 ccb->csio.sense_resid = ccb->csio.sense_len - 535 cfcs_max_sense; 536 } 537 break; 538 case CTL_CMD_ABORTED: 539 ccb->ccb_h.status = CAM_REQ_ABORTED; 540 break; 541 case CTL_ERROR: 542 default: 543 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 544 break; 545 } 546 547 xpt_done(ccb); 548 ctl_free_io(io); 549} 550 551void 552cfcs_action(struct cam_sim *sim, union ccb *ccb) 553{ 554 struct cfcs_softc *softc; 555 int err; 556 557 softc = (struct cfcs_softc *)cam_sim_softc(sim); 558 mtx_assert(&softc->lock, MA_OWNED); 559 560 switch (ccb->ccb_h.func_code) { 561 case XPT_SCSI_IO: { 562 union ctl_io *io; 563 struct ccb_scsiio *csio; 564 565 csio = &ccb->csio; 566 567 /* 568 * Catch CCB flags, like physical address flags, that 569 * indicate situations we currently can't handle. 570 */ 571 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 572 ccb->ccb_h.status = CAM_REQ_INVALID; 573 printf("%s: bad CCB flags %#x (all flags %#x)\n", 574 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 575 ccb->ccb_h.flags); 576 xpt_done(ccb); 577 return; 578 } 579 580 /* 581 * If we aren't online, there are no devices to see. 582 */ 583 if (softc->online == 0) { 584 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 585 xpt_done(ccb); 586 return; 587 } 588 589 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 590 if (io == NULL) { 591 printf("%s: can't allocate ctl_io\n", __func__); 592 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 593 xpt_freeze_devq(ccb->ccb_h.path, 1); 594 xpt_done(ccb); 595 return; 596 } 597 ctl_zero_io(io); 598 /* Save pointers on both sides */ 599 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 600 ccb->ccb_h.io_ptr = io; 601 602 /* 603 * Only SCSI I/O comes down this path, resets, etc. come 604 * down via the XPT_RESET_BUS/LUN CCBs below. 605 */ 606 io->io_hdr.io_type = CTL_IO_SCSI; 607 io->io_hdr.nexus.initid.id = 1; 608 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 609 /* 610 * XXX KDM how do we handle target IDs? 611 */ 612 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 613 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 614 /* 615 * This tag scheme isn't the best, since we could in theory 616 * have a very long-lived I/O and tag collision, especially 617 * in a high I/O environment. But it should work well 618 * enough for now. Since we're using unsigned ints, 619 * they'll just wrap around. 620 */ 621 io->scsiio.tag_num = softc->cur_tag_num++; 622 csio->tag_id = io->scsiio.tag_num; 623 switch (csio->tag_action) { 624 case CAM_TAG_ACTION_NONE: 625 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 626 break; 627 case MSG_SIMPLE_TASK: 628 io->scsiio.tag_type = CTL_TAG_SIMPLE; 629 break; 630 case MSG_HEAD_OF_QUEUE_TASK: 631 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 632 break; 633 case MSG_ORDERED_TASK: 634 io->scsiio.tag_type = CTL_TAG_ORDERED; 635 break; 636 case MSG_ACA_TASK: 637 io->scsiio.tag_type = CTL_TAG_ACA; 638 break; 639 default: 640 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 641 printf("%s: unhandled tag type %#x!!\n", __func__, 642 csio->tag_action); 643 break; 644 } 645 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 646 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 647 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 648 } 649 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 650 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 651 io->scsiio.cdb_len); 652 653 err = ctl_queue(io); 654 if (err != CTL_RETVAL_COMPLETE) { 655 printf("%s: func %d: error %d returned by " 656 "ctl_queue()!\n", __func__, 657 ccb->ccb_h.func_code, err); 658 ctl_free_io(io); 659 } else { 660 ccb->ccb_h.status |= CAM_SIM_QUEUED; 661 } 662 break; 663 } 664 case XPT_ABORT: { 665 union ctl_io *io; 666 union ccb *abort_ccb; 667 668 abort_ccb = ccb->cab.abort_ccb; 669 670 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 671 ccb->ccb_h.status = CAM_REQ_INVALID; 672 xpt_done(ccb); 673 } 674 675 /* 676 * If we aren't online, there are no devices to talk to. 677 */ 678 if (softc->online == 0) { 679 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 680 xpt_done(ccb); 681 return; 682 } 683 684 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 685 if (io == NULL) { 686 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 687 xpt_freeze_devq(ccb->ccb_h.path, 1); 688 xpt_done(ccb); 689 return; 690 } 691 692 ctl_zero_io(io); 693 /* Save pointers on both sides */ 694 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 695 ccb->ccb_h.io_ptr = io; 696 697 io->io_hdr.io_type = CTL_IO_TASK; 698 io->io_hdr.nexus.initid.id = 1; 699 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 700 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 701 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 702 io->taskio.task_action = CTL_TASK_ABORT_TASK; 703 io->taskio.tag_num = abort_ccb->csio.tag_id; 704 switch (abort_ccb->csio.tag_action) { 705 case CAM_TAG_ACTION_NONE: 706 io->taskio.tag_type = CTL_TAG_UNTAGGED; 707 break; 708 case MSG_SIMPLE_TASK: 709 io->taskio.tag_type = CTL_TAG_SIMPLE; 710 break; 711 case MSG_HEAD_OF_QUEUE_TASK: 712 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 713 break; 714 case MSG_ORDERED_TASK: 715 io->taskio.tag_type = CTL_TAG_ORDERED; 716 break; 717 case MSG_ACA_TASK: 718 io->taskio.tag_type = CTL_TAG_ACA; 719 break; 720 default: 721 io->taskio.tag_type = CTL_TAG_UNTAGGED; 722 printf("%s: unhandled tag type %#x!!\n", __func__, 723 abort_ccb->csio.tag_action); 724 break; 725 } 726 err = ctl_queue(io); 727 if (err != CTL_RETVAL_COMPLETE) { 728 printf("%s func %d: error %d returned by " 729 "ctl_queue()!\n", __func__, 730 ccb->ccb_h.func_code, err); 731 ctl_free_io(io); 732 } 733 break; 734 } 735 case XPT_GET_TRAN_SETTINGS: { 736 struct ccb_trans_settings *cts; 737 struct ccb_trans_settings_scsi *scsi; 738 struct ccb_trans_settings_fc *fc; 739 740 cts = &ccb->cts; 741 scsi = &cts->proto_specific.scsi; 742 fc = &cts->xport_specific.fc; 743 744 745 cts->protocol = PROTO_SCSI; 746 cts->protocol_version = SCSI_REV_SPC2; 747 cts->transport = XPORT_FC; 748 cts->transport_version = 0; 749 750 scsi->valid = CTS_SCSI_VALID_TQ; 751 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 752 fc->valid = CTS_FC_VALID_SPEED; 753 fc->bitrate = 800000; 754 fc->wwnn = softc->wwnn; 755 fc->wwpn = softc->wwpn; 756 fc->port = softc->fe.targ_port; 757 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 758 CTS_FC_VALID_PORT; 759 ccb->ccb_h.status = CAM_REQ_CMP; 760 break; 761 } 762 case XPT_SET_TRAN_SETTINGS: 763 /* XXX KDM should we actually do something here? */ 764 ccb->ccb_h.status = CAM_REQ_CMP; 765 break; 766 case XPT_RESET_BUS: 767 case XPT_RESET_DEV: { 768 union ctl_io *io; 769 770 /* 771 * If we aren't online, there are no devices to talk to. 772 */ 773 if (softc->online == 0) { 774 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 775 xpt_done(ccb); 776 return; 777 } 778 779 io = ctl_alloc_io(softc->fe.ctl_pool_ref); 780 if (io == NULL) { 781 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 782 xpt_freeze_devq(ccb->ccb_h.path, 1); 783 xpt_done(ccb); 784 return; 785 } 786 787 ctl_zero_io(io); 788 /* Save pointers on both sides */ 789 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 790 ccb->ccb_h.io_ptr = io; 791 792 io->io_hdr.io_type = CTL_IO_TASK; 793 io->io_hdr.nexus.initid.id = 0; 794 io->io_hdr.nexus.targ_port = softc->fe.targ_port; 795 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 796 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 797 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 798 io->taskio.task_action = CTL_TASK_BUS_RESET; 799 else 800 io->taskio.task_action = CTL_TASK_LUN_RESET; 801 802 err = ctl_queue(io); 803 if (err != CTL_RETVAL_COMPLETE) { 804 printf("%s func %d: error %d returned by " 805 "ctl_queue()!\n", __func__, 806 ccb->ccb_h.func_code, err); 807 ctl_free_io(io); 808 } 809 break; 810 } 811 case XPT_CALC_GEOMETRY: 812 cam_calc_geometry(&ccb->ccg, 1); 813 xpt_done(ccb); 814 break; 815 case XPT_PATH_INQ: { 816 struct ccb_pathinq *cpi; 817 818 cpi = &ccb->cpi; 819 820 cpi->version_num = 0; 821 cpi->hba_inquiry = PI_TAG_ABLE; 822 cpi->target_sprt = 0; 823 cpi->hba_misc = 0; 824 cpi->hba_eng_cnt = 0; 825 cpi->max_target = 1; 826 cpi->max_lun = 1024; 827 /* Do we really have a limit? */ 828 cpi->maxio = 1024 * 1024; 829 cpi->async_flags = 0; 830 cpi->hpath_id = 0; 831 cpi->initiator_id = 0; 832 833 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 834 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 835 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 836 cpi->unit_number = 0; 837 cpi->bus_id = 0; 838 cpi->base_transfer_speed = 800000; 839 cpi->protocol = PROTO_SCSI; 840 cpi->protocol_version = SCSI_REV_SPC2; 841 /* 842 * Pretend to be Fibre Channel. 843 */ 844 cpi->transport = XPORT_FC; 845 cpi->transport_version = 0; 846 cpi->xport_specific.fc.wwnn = softc->wwnn; 847 cpi->xport_specific.fc.wwpn = softc->wwpn; 848 cpi->xport_specific.fc.port = softc->fe.targ_port; 849 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 850 cpi->ccb_h.status = CAM_REQ_CMP; 851 break; 852 } 853 default: 854 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 855 printf("%s: unsupported CCB type %#x\n", __func__, 856 ccb->ccb_h.func_code); 857 xpt_done(ccb); 858 break; 859 } 860} 861 862static void 863cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 864{ 865 866} 867