1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009 Silicon Graphics International Corp. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification. 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14 * substantially similar to the "NO WARRANTY" disclaimer below 15 * ("Disclaimer") and any redistribution must be conditioned upon 16 * including a substantially similar Disclaimer requirement for further 17 * binary redistribution. 18 * 19 * NO WARRANTY 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGES. 31 * 32 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_frontend_cam_sim.c#4 $ 33 */ 34 /* 35 * CTL frontend to CAM SIM interface. This allows access to CTL LUNs via 36 * the da(4) and pass(4) drivers from inside the system. 37 * 38 * Author: Ken Merry <ken@FreeBSD.org> 39 */ 40 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/types.h> 48 #include <sys/malloc.h> 49 #include <sys/bus.h> 50 #include <sys/sysctl.h> 51 #include <machine/atomic.h> 52 #include <machine/bus.h> 53 #include <sys/sbuf.h> 54 55 #include <cam/cam.h> 56 #include <cam/cam_ccb.h> 57 #include <cam/cam_sim.h> 58 #include <cam/cam_xpt_sim.h> 59 #include <cam/cam_xpt.h> 60 #include <cam/cam_periph.h> 61 #include <cam/scsi/scsi_all.h> 62 #include <cam/scsi/scsi_message.h> 63 #include <cam/ctl/ctl_io.h> 64 #include <cam/ctl/ctl.h> 65 #include <cam/ctl/ctl_frontend.h> 66 #include <cam/ctl/ctl_debug.h> 67 68 #define io_ptr spriv_ptr1 69 70 struct cfcs_io { 71 union ccb *ccb; 72 }; 73 74 struct cfcs_softc { 75 struct ctl_port port; 76 char port_name[32]; 77 struct cam_sim *sim; 78 struct cam_devq *devq; 79 struct cam_path *path; 80 uint64_t wwnn; 81 uint64_t wwpn; 82 uint32_t cur_tag_num; 83 int online; 84 }; 85 86 /* 87 * We can't handle CCBs with these flags. For the most part, we just don't 88 * handle physical addresses yet. That would require mapping things in 89 * order to do the copy. 90 */ 91 #define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 92 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 93 CAM_SENSE_PHYS) 94 95 static int cfcs_init(void); 96 static int cfcs_shutdown(void); 97 static void cfcs_poll(struct cam_sim *sim); 98 static void cfcs_online(void *arg); 99 static void cfcs_offline(void *arg); 100 static void cfcs_datamove(union ctl_io *io); 101 static void cfcs_done(union ctl_io *io); 102 void cfcs_action(struct cam_sim *sim, union ccb *ccb); 103 104 struct cfcs_softc cfcs_softc; 105 /* 106 * This is primarily intended to allow for error injection to test the CAM 107 * sense data and sense residual handling code. This sets the maximum 108 * amount of SCSI sense data that we will report to CAM. 109 */ 110 static int cfcs_max_sense = sizeof(struct scsi_sense_data); 111 112 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 113 "CAM Target Layer SIM frontend"); 114 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 115 &cfcs_max_sense, 0, "Maximum sense data size"); 116 117 static struct ctl_frontend cfcs_frontend = 118 { 119 .name = "camsim", 120 .init = cfcs_init, 121 .shutdown = cfcs_shutdown, 122 }; 123 CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 124 125 static int 126 cfcs_init(void) 127 { 128 struct cfcs_softc *softc; 129 struct ctl_port *port; 130 int retval; 131 132 softc = &cfcs_softc; 133 bzero(softc, sizeof(*softc)); 134 port = &softc->port; 135 136 port->frontend = &cfcs_frontend; 137 port->port_type = CTL_PORT_INTERNAL; 138 /* XXX KDM what should the real number be here? */ 139 port->num_requested_ctl_io = 4096; 140 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 141 port->port_name = softc->port_name; 142 port->port_online = cfcs_online; 143 port->port_offline = cfcs_offline; 144 port->onoff_arg = softc; 145 port->fe_datamove = cfcs_datamove; 146 port->fe_done = cfcs_done; 147 port->targ_port = -1; 148 149 retval = ctl_port_register(port); 150 if (retval != 0) { 151 printf("%s: ctl_port_register() failed with error %d!\n", 152 __func__, retval); 153 return (retval); 154 } 155 156 /* 157 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 158 * ahead and set something random. 159 */ 160 if (port->wwnn == 0) { 161 uint64_t random_bits; 162 163 arc4rand(&random_bits, sizeof(random_bits), 0); 164 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 165 /* Company ID */ 0x5000000000000000ULL | 166 /* NL-Port */ 0x0300; 167 softc->wwpn = softc->wwnn + port->targ_port + 1; 168 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 169 } else { 170 softc->wwnn = port->wwnn; 171 softc->wwpn = port->wwpn; 172 } 173 174 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 175 if (softc->devq == NULL) { 176 printf("%s: error allocating devq\n", __func__); 177 retval = ENOMEM; 178 goto bailout; 179 } 180 181 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 182 softc, /*unit*/ 0, NULL, 1, 183 port->num_requested_ctl_io, softc->devq); 184 if (softc->sim == NULL) { 185 printf("%s: error allocating SIM\n", __func__); 186 retval = ENOMEM; 187 goto bailout; 188 } 189 190 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 191 printf("%s: error registering SIM\n", __func__); 192 retval = ENOMEM; 193 goto bailout; 194 } 195 196 if (xpt_create_path(&softc->path, /*periph*/NULL, 197 cam_sim_path(softc->sim), 198 CAM_TARGET_WILDCARD, 199 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 200 printf("%s: error creating path\n", __func__); 201 xpt_bus_deregister(cam_sim_path(softc->sim)); 202 retval = EINVAL; 203 goto bailout; 204 } 205 206 return (retval); 207 208 bailout: 209 if (softc->sim) 210 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 211 else if (softc->devq) 212 cam_simq_free(softc->devq); 213 return (retval); 214 } 215 216 static int 217 cfcs_shutdown(void) 218 { 219 struct cfcs_softc *softc = &cfcs_softc; 220 struct ctl_port *port = &softc->port; 221 int error; 222 223 ctl_port_offline(port); 224 225 xpt_free_path(softc->path); 226 xpt_bus_deregister(cam_sim_path(softc->sim)); 227 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 228 229 if ((error = ctl_port_deregister(port)) != 0) 230 printf("%s: cam_sim port deregistration failed\n", __func__); 231 return (error); 232 } 233 234 static void 235 cfcs_poll(struct cam_sim *sim) 236 { 237 238 } 239 240 static void 241 cfcs_onoffline(void *arg, int online) 242 { 243 struct cfcs_softc *softc = (struct cfcs_softc *)arg; 244 union ccb *ccb; 245 246 softc->online = online; 247 248 ccb = xpt_alloc_ccb_nowait(); 249 if (ccb == NULL) { 250 printf("%s: unable to allocate CCB for rescan\n", __func__); 251 return; 252 } 253 254 if (xpt_create_path(&ccb->ccb_h.path, NULL, 255 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 256 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 257 printf("%s: can't allocate path for rescan\n", __func__); 258 xpt_free_ccb(ccb); 259 return; 260 } 261 xpt_rescan(ccb); 262 } 263 264 static void 265 cfcs_online(void *arg) 266 { 267 cfcs_onoffline(arg, /*online*/ 1); 268 } 269 270 static void 271 cfcs_offline(void *arg) 272 { 273 cfcs_onoffline(arg, /*online*/ 0); 274 } 275 276 /* 277 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 278 * way to combine the functionality? 279 * 280 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 281 * caller's context, which will usually be the backend. That may not be a 282 * good thing. 283 */ 284 static void 285 cfcs_datamove(union ctl_io *io) 286 { 287 union ccb *ccb; 288 bus_dma_segment_t cam_sg_entry, *cam_sglist; 289 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 290 int cam_sg_count, ctl_sg_count, cam_sg_start; 291 int cam_sg_offset; 292 int len_to_copy; 293 int ctl_watermark, cam_watermark; 294 int i, j; 295 296 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 297 298 /* 299 * Note that we have a check in cfcs_action() to make sure that any 300 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 301 * is just to make sure no one removes that check without updating 302 * this code to provide the additional functionality necessary to 303 * support those modes of operation. 304 */ 305 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 306 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 307 308 /* 309 * Simplify things on both sides by putting single buffers into a 310 * single entry S/G list. 311 */ 312 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 313 case CAM_DATA_SG: { 314 int len_seen; 315 316 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 317 cam_sg_count = ccb->csio.sglist_cnt; 318 cam_sg_start = cam_sg_count; 319 cam_sg_offset = 0; 320 321 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 322 if ((len_seen + cam_sglist[i].ds_len) >= 323 io->scsiio.kern_rel_offset) { 324 cam_sg_start = i; 325 cam_sg_offset = io->scsiio.kern_rel_offset - 326 len_seen; 327 break; 328 } 329 len_seen += cam_sglist[i].ds_len; 330 } 331 break; 332 } 333 case CAM_DATA_VADDR: 334 cam_sglist = &cam_sg_entry; 335 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 336 cam_sglist[0].ds_addr = (bus_addr_t)(uintptr_t)ccb->csio.data_ptr; 337 cam_sg_count = 1; 338 cam_sg_start = 0; 339 cam_sg_offset = io->scsiio.kern_rel_offset; 340 break; 341 default: 342 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 343 } 344 345 if (io->scsiio.kern_sg_entries > 0) { 346 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 347 ctl_sg_count = io->scsiio.kern_sg_entries; 348 } else { 349 ctl_sglist = &ctl_sg_entry; 350 ctl_sglist->addr = io->scsiio.kern_data_ptr; 351 ctl_sglist->len = io->scsiio.kern_data_len; 352 ctl_sg_count = 1; 353 } 354 355 ctl_watermark = 0; 356 cam_watermark = cam_sg_offset; 357 for (i = cam_sg_start, j = 0; 358 i < cam_sg_count && j < ctl_sg_count;) { 359 uint8_t *cam_ptr, *ctl_ptr; 360 361 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 362 ctl_sglist[j].len - ctl_watermark); 363 364 cam_ptr = (uint8_t *)(uintptr_t)cam_sglist[i].ds_addr; 365 cam_ptr = cam_ptr + cam_watermark; 366 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 367 /* 368 * XXX KDM fix this! 369 */ 370 panic("need to implement bus address support"); 371 #if 0 372 kern_ptr = bus_to_virt(kern_sglist[j].addr); 373 #endif 374 } else 375 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 376 ctl_ptr = ctl_ptr + ctl_watermark; 377 378 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 379 CTL_FLAG_DATA_IN) { 380 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 381 __func__, len_to_copy)); 382 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 383 __func__, cam_ptr)); 384 bcopy(ctl_ptr, cam_ptr, len_to_copy); 385 } else { 386 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 387 __func__, len_to_copy)); 388 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 389 __func__, ctl_ptr)); 390 bcopy(cam_ptr, ctl_ptr, len_to_copy); 391 } 392 393 io->scsiio.ext_data_filled += len_to_copy; 394 io->scsiio.kern_data_resid -= len_to_copy; 395 396 cam_watermark += len_to_copy; 397 if (cam_sglist[i].ds_len == cam_watermark) { 398 i++; 399 cam_watermark = 0; 400 } 401 402 ctl_watermark += len_to_copy; 403 if (ctl_sglist[j].len == ctl_watermark) { 404 j++; 405 ctl_watermark = 0; 406 } 407 } 408 409 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 410 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 411 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 412 ccb->csio.resid = ccb->csio.dxfer_len - 413 io->scsiio.ext_data_filled; 414 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 415 ccb->ccb_h.status |= CAM_REQ_CMP; 416 xpt_done(ccb); 417 } 418 419 io->scsiio.be_move_done(io); 420 } 421 422 static void 423 cfcs_done(union ctl_io *io) 424 { 425 union ccb *ccb; 426 427 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 428 if (ccb == NULL) { 429 ctl_free_io(io); 430 return; 431 } 432 433 /* 434 * At this point we should have status. If we don't, that's a bug. 435 */ 436 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 437 ("invalid CTL status %#x", io->io_hdr.status)); 438 439 /* 440 * Translate CTL status to CAM status. 441 */ 442 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 443 ccb->csio.resid = ccb->csio.dxfer_len - 444 io->scsiio.ext_data_filled; 445 } 446 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 447 switch (io->io_hdr.status & CTL_STATUS_MASK) { 448 case CTL_SUCCESS: 449 ccb->ccb_h.status |= CAM_REQ_CMP; 450 break; 451 case CTL_SCSI_ERROR: 452 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 453 ccb->csio.scsi_status = io->scsiio.scsi_status; 454 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 455 min(io->scsiio.sense_len, ccb->csio.sense_len)); 456 if (ccb->csio.sense_len > io->scsiio.sense_len) 457 ccb->csio.sense_resid = ccb->csio.sense_len - 458 io->scsiio.sense_len; 459 else 460 ccb->csio.sense_resid = 0; 461 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 462 cfcs_max_sense) { 463 ccb->csio.sense_resid = ccb->csio.sense_len - 464 cfcs_max_sense; 465 } 466 break; 467 case CTL_CMD_ABORTED: 468 ccb->ccb_h.status |= CAM_REQ_ABORTED; 469 break; 470 case CTL_ERROR: 471 default: 472 ccb->ccb_h.status |= CAM_REQ_CMP_ERR; 473 break; 474 } 475 ctl_free_io(io); 476 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP && 477 (ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 478 xpt_freeze_devq(ccb->ccb_h.path, 1); 479 ccb->ccb_h.status |= CAM_DEV_QFRZN; 480 } 481 xpt_done(ccb); 482 } 483 484 void 485 cfcs_action(struct cam_sim *sim, union ccb *ccb) 486 { 487 struct cfcs_softc *softc; 488 int err; 489 490 softc = (struct cfcs_softc *)cam_sim_softc(sim); 491 492 switch (ccb->ccb_h.func_code) { 493 case XPT_SCSI_IO: { 494 union ctl_io *io; 495 struct ccb_scsiio *csio; 496 497 csio = &ccb->csio; 498 499 /* 500 * Catch CCB flags, like physical address flags, that 501 * indicate situations we currently can't handle. 502 */ 503 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 504 ccb->ccb_h.status = CAM_REQ_INVALID; 505 printf("%s: bad CCB flags %#x (all flags %#x)\n", 506 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 507 ccb->ccb_h.flags); 508 xpt_done(ccb); 509 return; 510 } 511 512 /* 513 * If we aren't online, there are no devices to see. 514 */ 515 if (softc->online == 0) { 516 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 517 xpt_done(ccb); 518 return; 519 } 520 521 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 522 if (io == NULL) { 523 printf("%s: can't allocate ctl_io\n", __func__); 524 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 525 xpt_freeze_devq(ccb->ccb_h.path, 1); 526 xpt_done(ccb); 527 return; 528 } 529 ctl_zero_io(io); 530 /* Save pointers on both sides */ 531 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 532 ccb->ccb_h.io_ptr = io; 533 534 /* 535 * Only SCSI I/O comes down this path, resets, etc. come 536 * down via the XPT_RESET_BUS/LUN CCBs below. 537 */ 538 io->io_hdr.io_type = CTL_IO_SCSI; 539 io->io_hdr.nexus.initid = 1; 540 io->io_hdr.nexus.targ_port = softc->port.targ_port; 541 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 542 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 543 /* 544 * This tag scheme isn't the best, since we could in theory 545 * have a very long-lived I/O and tag collision, especially 546 * in a high I/O environment. But it should work well 547 * enough for now. Since we're using unsigned ints, 548 * they'll just wrap around. 549 */ 550 io->scsiio.tag_num = atomic_fetchadd_32(&softc->cur_tag_num, 1); 551 csio->tag_id = io->scsiio.tag_num; 552 switch (csio->tag_action) { 553 case CAM_TAG_ACTION_NONE: 554 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 555 break; 556 case MSG_SIMPLE_TASK: 557 io->scsiio.tag_type = CTL_TAG_SIMPLE; 558 break; 559 case MSG_HEAD_OF_QUEUE_TASK: 560 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 561 break; 562 case MSG_ORDERED_TASK: 563 io->scsiio.tag_type = CTL_TAG_ORDERED; 564 break; 565 case MSG_ACA_TASK: 566 io->scsiio.tag_type = CTL_TAG_ACA; 567 break; 568 default: 569 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 570 printf("%s: unhandled tag type %#x!!\n", __func__, 571 csio->tag_action); 572 break; 573 } 574 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 575 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 576 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 577 } 578 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 579 bcopy(scsiio_cdb_ptr(csio), io->scsiio.cdb, io->scsiio.cdb_len); 580 581 ccb->ccb_h.status |= CAM_SIM_QUEUED; 582 err = ctl_queue(io); 583 if (err != CTL_RETVAL_COMPLETE) { 584 printf("%s: func %d: error %d returned by " 585 "ctl_queue()!\n", __func__, 586 ccb->ccb_h.func_code, err); 587 ctl_free_io(io); 588 ccb->ccb_h.status = CAM_REQ_INVALID; 589 xpt_done(ccb); 590 return; 591 } 592 break; 593 } 594 case XPT_ABORT: { 595 union ctl_io *io; 596 union ccb *abort_ccb; 597 598 abort_ccb = ccb->cab.abort_ccb; 599 600 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 601 ccb->ccb_h.status = CAM_REQ_INVALID; 602 xpt_done(ccb); 603 } 604 605 /* 606 * If we aren't online, there are no devices to talk to. 607 */ 608 if (softc->online == 0) { 609 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 610 xpt_done(ccb); 611 return; 612 } 613 614 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 615 if (io == NULL) { 616 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 617 xpt_freeze_devq(ccb->ccb_h.path, 1); 618 xpt_done(ccb); 619 return; 620 } 621 622 ctl_zero_io(io); 623 /* Save pointers on both sides */ 624 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 625 ccb->ccb_h.io_ptr = io; 626 627 io->io_hdr.io_type = CTL_IO_TASK; 628 io->io_hdr.nexus.initid = 1; 629 io->io_hdr.nexus.targ_port = softc->port.targ_port; 630 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 631 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 632 io->taskio.task_action = CTL_TASK_ABORT_TASK; 633 io->taskio.tag_num = abort_ccb->csio.tag_id; 634 switch (abort_ccb->csio.tag_action) { 635 case CAM_TAG_ACTION_NONE: 636 io->taskio.tag_type = CTL_TAG_UNTAGGED; 637 break; 638 case MSG_SIMPLE_TASK: 639 io->taskio.tag_type = CTL_TAG_SIMPLE; 640 break; 641 case MSG_HEAD_OF_QUEUE_TASK: 642 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 643 break; 644 case MSG_ORDERED_TASK: 645 io->taskio.tag_type = CTL_TAG_ORDERED; 646 break; 647 case MSG_ACA_TASK: 648 io->taskio.tag_type = CTL_TAG_ACA; 649 break; 650 default: 651 io->taskio.tag_type = CTL_TAG_UNTAGGED; 652 printf("%s: unhandled tag type %#x!!\n", __func__, 653 abort_ccb->csio.tag_action); 654 break; 655 } 656 err = ctl_queue(io); 657 if (err != CTL_RETVAL_COMPLETE) { 658 printf("%s func %d: error %d returned by " 659 "ctl_queue()!\n", __func__, 660 ccb->ccb_h.func_code, err); 661 ctl_free_io(io); 662 } 663 break; 664 } 665 case XPT_GET_TRAN_SETTINGS: { 666 struct ccb_trans_settings *cts; 667 struct ccb_trans_settings_scsi *scsi; 668 struct ccb_trans_settings_fc *fc; 669 670 cts = &ccb->cts; 671 scsi = &cts->proto_specific.scsi; 672 fc = &cts->xport_specific.fc; 673 674 675 cts->protocol = PROTO_SCSI; 676 cts->protocol_version = SCSI_REV_SPC2; 677 cts->transport = XPORT_FC; 678 cts->transport_version = 0; 679 680 scsi->valid = CTS_SCSI_VALID_TQ; 681 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 682 fc->valid = CTS_FC_VALID_SPEED; 683 fc->bitrate = 800000; 684 fc->wwnn = softc->wwnn; 685 fc->wwpn = softc->wwpn; 686 fc->port = softc->port.targ_port; 687 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 688 CTS_FC_VALID_PORT; 689 ccb->ccb_h.status = CAM_REQ_CMP; 690 break; 691 } 692 case XPT_SET_TRAN_SETTINGS: 693 /* XXX KDM should we actually do something here? */ 694 ccb->ccb_h.status = CAM_REQ_CMP; 695 break; 696 case XPT_RESET_BUS: 697 case XPT_RESET_DEV: { 698 union ctl_io *io; 699 700 /* 701 * If we aren't online, there are no devices to talk to. 702 */ 703 if (softc->online == 0) { 704 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 705 xpt_done(ccb); 706 return; 707 } 708 709 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 710 if (io == NULL) { 711 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 712 xpt_freeze_devq(ccb->ccb_h.path, 1); 713 xpt_done(ccb); 714 return; 715 } 716 717 ctl_zero_io(io); 718 /* Save pointers on both sides */ 719 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 720 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 721 ccb->ccb_h.io_ptr = io; 722 723 io->io_hdr.io_type = CTL_IO_TASK; 724 io->io_hdr.nexus.initid = 1; 725 io->io_hdr.nexus.targ_port = softc->port.targ_port; 726 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 727 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 728 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 729 io->taskio.task_action = CTL_TASK_BUS_RESET; 730 else 731 io->taskio.task_action = CTL_TASK_LUN_RESET; 732 733 err = ctl_queue(io); 734 if (err != CTL_RETVAL_COMPLETE) { 735 printf("%s func %d: error %d returned by " 736 "ctl_queue()!\n", __func__, 737 ccb->ccb_h.func_code, err); 738 ctl_free_io(io); 739 } 740 break; 741 } 742 case XPT_CALC_GEOMETRY: 743 cam_calc_geometry(&ccb->ccg, 1); 744 xpt_done(ccb); 745 break; 746 case XPT_PATH_INQ: { 747 struct ccb_pathinq *cpi; 748 749 cpi = &ccb->cpi; 750 751 cpi->version_num = 0; 752 cpi->hba_inquiry = PI_TAG_ABLE; 753 cpi->target_sprt = 0; 754 cpi->hba_misc = PIM_EXTLUNS; 755 cpi->hba_eng_cnt = 0; 756 cpi->max_target = 0; 757 cpi->max_lun = 1024; 758 /* Do we really have a limit? */ 759 cpi->maxio = 1024 * 1024; 760 cpi->async_flags = 0; 761 cpi->hpath_id = 0; 762 cpi->initiator_id = 1; 763 764 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 765 strlcpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 766 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 767 cpi->unit_number = 0; 768 cpi->bus_id = 0; 769 cpi->base_transfer_speed = 800000; 770 cpi->protocol = PROTO_SCSI; 771 cpi->protocol_version = SCSI_REV_SPC2; 772 /* 773 * Pretend to be Fibre Channel. 774 */ 775 cpi->transport = XPORT_FC; 776 cpi->transport_version = 0; 777 cpi->xport_specific.fc.wwnn = softc->wwnn; 778 cpi->xport_specific.fc.wwpn = softc->wwpn; 779 cpi->xport_specific.fc.port = softc->port.targ_port; 780 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 781 cpi->ccb_h.status = CAM_REQ_CMP; 782 break; 783 } 784 default: 785 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 786 printf("%s: unsupported CCB type %#x\n", __func__, 787 ccb->ccb_h.func_code); 788 xpt_done(ccb); 789 break; 790 } 791 } 792