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/11/sys/cam/ctl/ctl_frontend_cam_sim.c 354782 2019-11-17 00:52:58Z mav $"); 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/kernel.h> 45#include <sys/types.h> 46#include <sys/malloc.h> 47#include <sys/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 68struct cfcs_io { 69 union ccb *ccb; 70}; 71 72struct 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_MSG_BUF_PHYS | \ 90 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 91 CAM_SENSE_PHYS) 92 93static int cfcs_init(void); 94static int cfcs_shutdown(void); 95static void cfcs_poll(struct cam_sim *sim); 96static void cfcs_online(void *arg); 97static void cfcs_offline(void *arg); 98static void cfcs_datamove(union ctl_io *io); 99static void cfcs_done(union ctl_io *io); 100void cfcs_action(struct cam_sim *sim, union ccb *ccb); 101 102struct cfcs_softc cfcs_softc; 103/* 104 * This is primarily intended to allow for error injection to test the CAM 105 * sense data and sense residual handling code. This sets the maximum 106 * amount of SCSI sense data that we will report to CAM. 107 */ 108static int cfcs_max_sense = sizeof(struct scsi_sense_data); 109 110SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 111 "CAM Target Layer SIM frontend"); 112SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 113 &cfcs_max_sense, 0, "Maximum sense data size"); 114 115static struct ctl_frontend cfcs_frontend = 116{ 117 .name = "camsim", 118 .init = cfcs_init, 119 .shutdown = cfcs_shutdown, 120}; 121CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 122 123static int 124cfcs_init(void) 125{ 126 struct cfcs_softc *softc; 127 struct ctl_port *port; 128 int retval; 129 130 softc = &cfcs_softc; 131 bzero(softc, sizeof(*softc)); 132 port = &softc->port; 133 134 port->frontend = &cfcs_frontend; 135 port->port_type = CTL_PORT_INTERNAL; 136 /* XXX KDM what should the real number be here? */ 137 port->num_requested_ctl_io = 4096; 138 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 139 port->port_name = softc->port_name; 140 port->port_online = cfcs_online; 141 port->port_offline = cfcs_offline; 142 port->onoff_arg = softc; 143 port->fe_datamove = cfcs_datamove; 144 port->fe_done = cfcs_done; 145 146 /* XXX KDM what should we report here? */ 147 /* XXX These should probably be fetched from CTL. */ 148 port->max_targets = 1; 149 port->max_target_id = 15; 150 port->targ_port = -1; 151 152 retval = ctl_port_register(port); 153 if (retval != 0) { 154 printf("%s: ctl_port_register() failed with error %d!\n", 155 __func__, retval); 156 return (retval); 157 } 158 159 /* 160 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 161 * ahead and set something random. 162 */ 163 if (port->wwnn == 0) { 164 uint64_t random_bits; 165 166 arc4rand(&random_bits, sizeof(random_bits), 0); 167 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 168 /* Company ID */ 0x5000000000000000ULL | 169 /* NL-Port */ 0x0300; 170 softc->wwpn = softc->wwnn + port->targ_port + 1; 171 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 172 } else { 173 softc->wwnn = port->wwnn; 174 softc->wwpn = port->wwpn; 175 } 176 177 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 178 if (softc->devq == NULL) { 179 printf("%s: error allocating devq\n", __func__); 180 retval = ENOMEM; 181 goto bailout; 182 } 183 184 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 185 softc, /*unit*/ 0, NULL, 1, 186 port->num_requested_ctl_io, softc->devq); 187 if (softc->sim == NULL) { 188 printf("%s: error allocating SIM\n", __func__); 189 retval = ENOMEM; 190 goto bailout; 191 } 192 193 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 194 printf("%s: error registering SIM\n", __func__); 195 retval = ENOMEM; 196 goto bailout; 197 } 198 199 if (xpt_create_path(&softc->path, /*periph*/NULL, 200 cam_sim_path(softc->sim), 201 CAM_TARGET_WILDCARD, 202 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 203 printf("%s: error creating path\n", __func__); 204 xpt_bus_deregister(cam_sim_path(softc->sim)); 205 retval = EINVAL; 206 goto bailout; 207 } 208 209 return (retval); 210 211bailout: 212 if (softc->sim) 213 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 214 else if (softc->devq) 215 cam_simq_free(softc->devq); 216 return (retval); 217} 218 219static int 220cfcs_shutdown(void) 221{ 222 struct cfcs_softc *softc = &cfcs_softc; 223 struct ctl_port *port = &softc->port; 224 int error; 225 226 ctl_port_offline(port); 227 228 xpt_free_path(softc->path); 229 xpt_bus_deregister(cam_sim_path(softc->sim)); 230 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 231 232 if ((error = ctl_port_deregister(port)) != 0) 233 printf("%s: cam_sim port deregistration failed\n", __func__); 234 return (error); 235} 236 237static void 238cfcs_poll(struct cam_sim *sim) 239{ 240 241} 242 243static void 244cfcs_onoffline(void *arg, int online) 245{ 246 struct cfcs_softc *softc = (struct cfcs_softc *)arg; 247 union ccb *ccb; 248 249 softc->online = online; 250 251 ccb = xpt_alloc_ccb_nowait(); 252 if (ccb == NULL) { 253 printf("%s: unable to allocate CCB for rescan\n", __func__); 254 return; 255 } 256 257 if (xpt_create_path(&ccb->ccb_h.path, NULL, 258 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 259 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 260 printf("%s: can't allocate path for rescan\n", __func__); 261 xpt_free_ccb(ccb); 262 return; 263 } 264 xpt_rescan(ccb); 265} 266 267static void 268cfcs_online(void *arg) 269{ 270 cfcs_onoffline(arg, /*online*/ 1); 271} 272 273static void 274cfcs_offline(void *arg) 275{ 276 cfcs_onoffline(arg, /*online*/ 0); 277} 278 279/* 280 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 281 * way to combine the functionality? 282 * 283 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 284 * caller's context, which will usually be the backend. That may not be a 285 * good thing. 286 */ 287static void 288cfcs_datamove(union ctl_io *io) 289{ 290 union ccb *ccb; 291 bus_dma_segment_t cam_sg_entry, *cam_sglist; 292 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 293 int cam_sg_count, ctl_sg_count, cam_sg_start; 294 int cam_sg_offset; 295 int len_to_copy; 296 int ctl_watermark, cam_watermark; 297 int i, j; 298 299 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 300 301 /* 302 * Note that we have a check in cfcs_action() to make sure that any 303 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 304 * is just to make sure no one removes that check without updating 305 * this code to provide the additional functionality necessary to 306 * support those modes of operation. 307 */ 308 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 309 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 310 311 /* 312 * Simplify things on both sides by putting single buffers into a 313 * single entry S/G list. 314 */ 315 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 316 case CAM_DATA_SG: { 317 int len_seen; 318 319 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 320 cam_sg_count = ccb->csio.sglist_cnt; 321 cam_sg_start = cam_sg_count; 322 cam_sg_offset = 0; 323 324 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 325 if ((len_seen + cam_sglist[i].ds_len) >= 326 io->scsiio.kern_rel_offset) { 327 cam_sg_start = i; 328 cam_sg_offset = io->scsiio.kern_rel_offset - 329 len_seen; 330 break; 331 } 332 len_seen += cam_sglist[i].ds_len; 333 } 334 break; 335 } 336 case CAM_DATA_VADDR: 337 cam_sglist = &cam_sg_entry; 338 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 339 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 340 cam_sg_count = 1; 341 cam_sg_start = 0; 342 cam_sg_offset = io->scsiio.kern_rel_offset; 343 break; 344 default: 345 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 346 } 347 348 if (io->scsiio.kern_sg_entries > 0) { 349 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 350 ctl_sg_count = io->scsiio.kern_sg_entries; 351 } else { 352 ctl_sglist = &ctl_sg_entry; 353 ctl_sglist->addr = io->scsiio.kern_data_ptr; 354 ctl_sglist->len = io->scsiio.kern_data_len; 355 ctl_sg_count = 1; 356 } 357 358 ctl_watermark = 0; 359 cam_watermark = cam_sg_offset; 360 for (i = cam_sg_start, j = 0; 361 i < cam_sg_count && j < ctl_sg_count;) { 362 uint8_t *cam_ptr, *ctl_ptr; 363 364 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 365 ctl_sglist[j].len - ctl_watermark); 366 367 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 368 cam_ptr = cam_ptr + cam_watermark; 369 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 370 /* 371 * XXX KDM fix this! 372 */ 373 panic("need to implement bus address support"); 374#if 0 375 kern_ptr = bus_to_virt(kern_sglist[j].addr); 376#endif 377 } else 378 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 379 ctl_ptr = ctl_ptr + ctl_watermark; 380 381 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 382 CTL_FLAG_DATA_IN) { 383 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 384 __func__, len_to_copy)); 385 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 386 __func__, cam_ptr)); 387 bcopy(ctl_ptr, cam_ptr, len_to_copy); 388 } else { 389 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 390 __func__, len_to_copy)); 391 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 392 __func__, ctl_ptr)); 393 bcopy(cam_ptr, ctl_ptr, len_to_copy); 394 } 395 396 io->scsiio.ext_data_filled += len_to_copy; 397 io->scsiio.kern_data_resid -= len_to_copy; 398 399 cam_watermark += len_to_copy; 400 if (cam_sglist[i].ds_len == cam_watermark) { 401 i++; 402 cam_watermark = 0; 403 } 404 405 ctl_watermark += len_to_copy; 406 if (ctl_sglist[j].len == ctl_watermark) { 407 j++; 408 ctl_watermark = 0; 409 } 410 } 411 412 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 413 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 414 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 415 ccb->csio.resid = ccb->csio.dxfer_len - 416 io->scsiio.ext_data_filled; 417 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 418 ccb->ccb_h.status |= CAM_REQ_CMP; 419 xpt_done(ccb); 420 } 421 422 io->scsiio.be_move_done(io); 423} 424 425static void 426cfcs_done(union ctl_io *io) 427{ 428 union ccb *ccb; 429 430 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 431 if (ccb == NULL) { 432 ctl_free_io(io); 433 return; 434 } 435 436 /* 437 * At this point we should have status. If we don't, that's a bug. 438 */ 439 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 440 ("invalid CTL status %#x", io->io_hdr.status)); 441 442 /* 443 * Translate CTL status to CAM status. 444 */ 445 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 446 ccb->csio.resid = ccb->csio.dxfer_len - 447 io->scsiio.ext_data_filled; 448 } 449 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 450 switch (io->io_hdr.status & CTL_STATUS_MASK) { 451 case CTL_SUCCESS: 452 ccb->ccb_h.status |= CAM_REQ_CMP; 453 break; 454 case CTL_SCSI_ERROR: 455 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 456 ccb->csio.scsi_status = io->scsiio.scsi_status; 457 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 458 min(io->scsiio.sense_len, ccb->csio.sense_len)); 459 if (ccb->csio.sense_len > io->scsiio.sense_len) 460 ccb->csio.sense_resid = ccb->csio.sense_len - 461 io->scsiio.sense_len; 462 else 463 ccb->csio.sense_resid = 0; 464 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 465 cfcs_max_sense) { 466 ccb->csio.sense_resid = ccb->csio.sense_len - 467 cfcs_max_sense; 468 } 469 break; 470 case CTL_CMD_ABORTED: 471 ccb->ccb_h.status |= CAM_REQ_ABORTED; 472 break; 473 case CTL_ERROR: 474 default: 475 ccb->ccb_h.status |= CAM_REQ_CMP_ERR; 476 break; 477 } 478 ctl_free_io(io); 479 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP && 480 (ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 481 xpt_freeze_devq(ccb->ccb_h.path, 1); 482 ccb->ccb_h.status |= CAM_DEV_QFRZN; 483 } 484 xpt_done(ccb); 485} 486 487void 488cfcs_action(struct cam_sim *sim, union ccb *ccb) 489{ 490 struct cfcs_softc *softc; 491 int err; 492 493 softc = (struct cfcs_softc *)cam_sim_softc(sim); 494 495 switch (ccb->ccb_h.func_code) { 496 case XPT_SCSI_IO: { 497 union ctl_io *io; 498 struct ccb_scsiio *csio; 499 500 csio = &ccb->csio; 501 502 /* 503 * Catch CCB flags, like physical address flags, that 504 * indicate situations we currently can't handle. 505 */ 506 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 507 ccb->ccb_h.status = CAM_REQ_INVALID; 508 printf("%s: bad CCB flags %#x (all flags %#x)\n", 509 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 510 ccb->ccb_h.flags); 511 xpt_done(ccb); 512 return; 513 } 514 515 /* 516 * If we aren't online, there are no devices to see. 517 */ 518 if (softc->online == 0) { 519 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 520 xpt_done(ccb); 521 return; 522 } 523 524 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 525 if (io == NULL) { 526 printf("%s: can't allocate ctl_io\n", __func__); 527 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 528 xpt_freeze_devq(ccb->ccb_h.path, 1); 529 xpt_done(ccb); 530 return; 531 } 532 ctl_zero_io(io); 533 /* Save pointers on both sides */ 534 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 535 ccb->ccb_h.io_ptr = io; 536 537 /* 538 * Only SCSI I/O comes down this path, resets, etc. come 539 * down via the XPT_RESET_BUS/LUN CCBs below. 540 */ 541 io->io_hdr.io_type = CTL_IO_SCSI; 542 io->io_hdr.nexus.initid = 1; 543 io->io_hdr.nexus.targ_port = softc->port.targ_port; 544 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 545 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 546 /* 547 * This tag scheme isn't the best, since we could in theory 548 * have a very long-lived I/O and tag collision, especially 549 * in a high I/O environment. But it should work well 550 * enough for now. Since we're using unsigned ints, 551 * they'll just wrap around. 552 */ 553 io->scsiio.tag_num = atomic_fetchadd_32(&softc->cur_tag_num, 1); 554 csio->tag_id = io->scsiio.tag_num; 555 switch (csio->tag_action) { 556 case CAM_TAG_ACTION_NONE: 557 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 558 break; 559 case MSG_SIMPLE_TASK: 560 io->scsiio.tag_type = CTL_TAG_SIMPLE; 561 break; 562 case MSG_HEAD_OF_QUEUE_TASK: 563 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 564 break; 565 case MSG_ORDERED_TASK: 566 io->scsiio.tag_type = CTL_TAG_ORDERED; 567 break; 568 case MSG_ACA_TASK: 569 io->scsiio.tag_type = CTL_TAG_ACA; 570 break; 571 default: 572 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 573 printf("%s: unhandled tag type %#x!!\n", __func__, 574 csio->tag_action); 575 break; 576 } 577 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 578 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 579 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 580 } 581 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 582 bcopy(scsiio_cdb_ptr(csio), io->scsiio.cdb, io->scsiio.cdb_len); 583 584 ccb->ccb_h.status |= CAM_SIM_QUEUED; 585 err = ctl_queue(io); 586 if (err != CTL_RETVAL_COMPLETE) { 587 printf("%s: func %d: error %d returned by " 588 "ctl_queue()!\n", __func__, 589 ccb->ccb_h.func_code, err); 590 ctl_free_io(io); 591 ccb->ccb_h.status = CAM_REQ_INVALID; 592 xpt_done(ccb); 593 return; 594 } 595 break; 596 } 597 case XPT_ABORT: { 598 union ctl_io *io; 599 union ccb *abort_ccb; 600 601 abort_ccb = ccb->cab.abort_ccb; 602 603 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 604 ccb->ccb_h.status = CAM_REQ_INVALID; 605 xpt_done(ccb); 606 } 607 608 /* 609 * If we aren't online, there are no devices to talk to. 610 */ 611 if (softc->online == 0) { 612 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 613 xpt_done(ccb); 614 return; 615 } 616 617 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 618 if (io == NULL) { 619 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 620 xpt_freeze_devq(ccb->ccb_h.path, 1); 621 xpt_done(ccb); 622 return; 623 } 624 625 ctl_zero_io(io); 626 /* Save pointers on both sides */ 627 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 628 ccb->ccb_h.io_ptr = io; 629 630 io->io_hdr.io_type = CTL_IO_TASK; 631 io->io_hdr.nexus.initid = 1; 632 io->io_hdr.nexus.targ_port = softc->port.targ_port; 633 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 634 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 635 io->taskio.task_action = CTL_TASK_ABORT_TASK; 636 io->taskio.tag_num = abort_ccb->csio.tag_id; 637 switch (abort_ccb->csio.tag_action) { 638 case CAM_TAG_ACTION_NONE: 639 io->taskio.tag_type = CTL_TAG_UNTAGGED; 640 break; 641 case MSG_SIMPLE_TASK: 642 io->taskio.tag_type = CTL_TAG_SIMPLE; 643 break; 644 case MSG_HEAD_OF_QUEUE_TASK: 645 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 646 break; 647 case MSG_ORDERED_TASK: 648 io->taskio.tag_type = CTL_TAG_ORDERED; 649 break; 650 case MSG_ACA_TASK: 651 io->taskio.tag_type = CTL_TAG_ACA; 652 break; 653 default: 654 io->taskio.tag_type = CTL_TAG_UNTAGGED; 655 printf("%s: unhandled tag type %#x!!\n", __func__, 656 abort_ccb->csio.tag_action); 657 break; 658 } 659 err = ctl_queue(io); 660 if (err != CTL_RETVAL_COMPLETE) { 661 printf("%s func %d: error %d returned by " 662 "ctl_queue()!\n", __func__, 663 ccb->ccb_h.func_code, err); 664 ctl_free_io(io); 665 } 666 break; 667 } 668 case XPT_GET_TRAN_SETTINGS: { 669 struct ccb_trans_settings *cts; 670 struct ccb_trans_settings_scsi *scsi; 671 struct ccb_trans_settings_fc *fc; 672 673 cts = &ccb->cts; 674 scsi = &cts->proto_specific.scsi; 675 fc = &cts->xport_specific.fc; 676 677 678 cts->protocol = PROTO_SCSI; 679 cts->protocol_version = SCSI_REV_SPC2; 680 cts->transport = XPORT_FC; 681 cts->transport_version = 0; 682 683 scsi->valid = CTS_SCSI_VALID_TQ; 684 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 685 fc->valid = CTS_FC_VALID_SPEED; 686 fc->bitrate = 800000; 687 fc->wwnn = softc->wwnn; 688 fc->wwpn = softc->wwpn; 689 fc->port = softc->port.targ_port; 690 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 691 CTS_FC_VALID_PORT; 692 ccb->ccb_h.status = CAM_REQ_CMP; 693 break; 694 } 695 case XPT_SET_TRAN_SETTINGS: 696 /* XXX KDM should we actually do something here? */ 697 ccb->ccb_h.status = CAM_REQ_CMP; 698 break; 699 case XPT_RESET_BUS: 700 case XPT_RESET_DEV: { 701 union ctl_io *io; 702 703 /* 704 * If we aren't online, there are no devices to talk to. 705 */ 706 if (softc->online == 0) { 707 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 708 xpt_done(ccb); 709 return; 710 } 711 712 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 713 if (io == NULL) { 714 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 715 xpt_freeze_devq(ccb->ccb_h.path, 1); 716 xpt_done(ccb); 717 return; 718 } 719 720 ctl_zero_io(io); 721 /* Save pointers on both sides */ 722 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 723 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 724 ccb->ccb_h.io_ptr = io; 725 726 io->io_hdr.io_type = CTL_IO_TASK; 727 io->io_hdr.nexus.initid = 1; 728 io->io_hdr.nexus.targ_port = softc->port.targ_port; 729 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 730 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 731 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 732 io->taskio.task_action = CTL_TASK_BUS_RESET; 733 else 734 io->taskio.task_action = CTL_TASK_LUN_RESET; 735 736 err = ctl_queue(io); 737 if (err != CTL_RETVAL_COMPLETE) { 738 printf("%s func %d: error %d returned by " 739 "ctl_queue()!\n", __func__, 740 ccb->ccb_h.func_code, err); 741 ctl_free_io(io); 742 } 743 break; 744 } 745 case XPT_CALC_GEOMETRY: 746 cam_calc_geometry(&ccb->ccg, 1); 747 xpt_done(ccb); 748 break; 749 case XPT_PATH_INQ: { 750 struct ccb_pathinq *cpi; 751 752 cpi = &ccb->cpi; 753 754 cpi->version_num = 0; 755 cpi->hba_inquiry = PI_TAG_ABLE; 756 cpi->target_sprt = 0; 757 cpi->hba_misc = PIM_EXTLUNS; 758 cpi->hba_eng_cnt = 0; 759 cpi->max_target = 0; 760 cpi->max_lun = 1024; 761 /* Do we really have a limit? */ 762 cpi->maxio = 1024 * 1024; 763 cpi->async_flags = 0; 764 cpi->hpath_id = 0; 765 cpi->initiator_id = 1; 766 767 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 768 strlcpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 769 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 770 cpi->unit_number = 0; 771 cpi->bus_id = 0; 772 cpi->base_transfer_speed = 800000; 773 cpi->protocol = PROTO_SCSI; 774 cpi->protocol_version = SCSI_REV_SPC2; 775 /* 776 * Pretend to be Fibre Channel. 777 */ 778 cpi->transport = XPORT_FC; 779 cpi->transport_version = 0; 780 cpi->xport_specific.fc.wwnn = softc->wwnn; 781 cpi->xport_specific.fc.wwpn = softc->wwpn; 782 cpi->xport_specific.fc.port = softc->port.targ_port; 783 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 784 cpi->ccb_h.status = CAM_REQ_CMP; 785 break; 786 } 787 default: 788 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 789 printf("%s: unsupported CCB type %#x\n", __func__, 790 ccb->ccb_h.func_code); 791 xpt_done(ccb); 792 break; 793 } 794} 795