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