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