ctl_frontend_cam_sim.c revision 313369
1/*- 2 * Copyright (c) 2009 Silicon Graphics International Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 17 * NO WARRANTY 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGES. 29 * 30 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_frontend_cam_sim.c#4 $ 31 */ 32/* 33 * CTL frontend to CAM SIM interface. This allows access to CTL LUNs via 34 * the da(4) and pass(4) drivers from inside the system. 35 * 36 * Author: Ken Merry <ken@FreeBSD.org> 37 */ 38 39#include <sys/cdefs.h> 40__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_cam_sim.c 313369 2017-02-07 01:56:26Z 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/lock.h> 48#include <sys/mutex.h> 49#include <sys/condvar.h> 50#include <sys/queue.h> 51#include <sys/bus.h> 52#include <sys/sysctl.h> 53#include <machine/bus.h> 54#include <sys/sbuf.h> 55 56#include <cam/cam.h> 57#include <cam/cam_ccb.h> 58#include <cam/cam_sim.h> 59#include <cam/cam_xpt_sim.h> 60#include <cam/cam_xpt.h> 61#include <cam/cam_periph.h> 62#include <cam/scsi/scsi_all.h> 63#include <cam/scsi/scsi_message.h> 64#include <cam/ctl/ctl_io.h> 65#include <cam/ctl/ctl.h> 66#include <cam/ctl/ctl_frontend.h> 67#include <cam/ctl/ctl_debug.h> 68 69#define io_ptr spriv_ptr1 70 71struct cfcs_io { 72 union ccb *ccb; 73}; 74 75struct cfcs_softc { 76 struct ctl_port port; 77 char port_name[32]; 78 struct cam_sim *sim; 79 struct cam_devq *devq; 80 struct cam_path *path; 81 struct mtx lock; 82 uint64_t wwnn; 83 uint64_t wwpn; 84 uint32_t cur_tag_num; 85 int online; 86}; 87 88/* 89 * We can't handle CCBs with these flags. For the most part, we just don't 90 * handle physical addresses yet. That would require mapping things in 91 * order to do the copy. 92 */ 93#define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 94 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 95 CAM_SENSE_PHYS) 96 97static int cfcs_init(void); 98static int cfcs_shutdown(void); 99static void cfcs_poll(struct cam_sim *sim); 100static void cfcs_online(void *arg); 101static void cfcs_offline(void *arg); 102static void cfcs_datamove(union ctl_io *io); 103static void cfcs_done(union ctl_io *io); 104void cfcs_action(struct cam_sim *sim, union ccb *ccb); 105 106struct cfcs_softc cfcs_softc; 107/* 108 * This is primarily intended to allow for error injection to test the CAM 109 * sense data and sense residual handling code. This sets the maximum 110 * amount of SCSI sense data that we will report to CAM. 111 */ 112static int cfcs_max_sense = sizeof(struct scsi_sense_data); 113 114SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 115 "CAM Target Layer SIM frontend"); 116SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 117 &cfcs_max_sense, 0, "Maximum sense data size"); 118 119static struct ctl_frontend cfcs_frontend = 120{ 121 .name = "camsim", 122 .init = cfcs_init, 123 .shutdown = cfcs_shutdown, 124}; 125CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 126 127static int 128cfcs_init(void) 129{ 130 struct cfcs_softc *softc; 131 struct ctl_port *port; 132 int retval; 133 134 softc = &cfcs_softc; 135 bzero(softc, sizeof(*softc)); 136 mtx_init(&softc->lock, "ctl2cam", NULL, MTX_DEF); 137 port = &softc->port; 138 139 port->frontend = &cfcs_frontend; 140 port->port_type = CTL_PORT_INTERNAL; 141 /* XXX KDM what should the real number be here? */ 142 port->num_requested_ctl_io = 4096; 143 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 144 port->port_name = softc->port_name; 145 port->port_online = cfcs_online; 146 port->port_offline = cfcs_offline; 147 port->onoff_arg = softc; 148 port->fe_datamove = cfcs_datamove; 149 port->fe_done = cfcs_done; 150 151 /* XXX KDM what should we report here? */ 152 /* XXX These should probably be fetched from CTL. */ 153 port->max_targets = 1; 154 port->max_target_id = 15; 155 port->targ_port = -1; 156 157 retval = ctl_port_register(port); 158 if (retval != 0) { 159 printf("%s: ctl_port_register() failed with error %d!\n", 160 __func__, retval); 161 mtx_destroy(&softc->lock); 162 return (retval); 163 } 164 165 /* 166 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 167 * ahead and set something random. 168 */ 169 if (port->wwnn == 0) { 170 uint64_t random_bits; 171 172 arc4rand(&random_bits, sizeof(random_bits), 0); 173 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 174 /* Company ID */ 0x5000000000000000ULL | 175 /* NL-Port */ 0x0300; 176 softc->wwpn = softc->wwnn + port->targ_port + 1; 177 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 178 } else { 179 softc->wwnn = port->wwnn; 180 softc->wwpn = port->wwpn; 181 } 182 183 mtx_lock(&softc->lock); 184 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 185 if (softc->devq == NULL) { 186 printf("%s: error allocating devq\n", __func__); 187 retval = ENOMEM; 188 goto bailout; 189 } 190 191 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 192 softc, /*unit*/ 0, &softc->lock, 1, 193 port->num_requested_ctl_io, softc->devq); 194 if (softc->sim == NULL) { 195 printf("%s: error allocating SIM\n", __func__); 196 retval = ENOMEM; 197 goto bailout; 198 } 199 200 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 201 printf("%s: error registering SIM\n", __func__); 202 retval = ENOMEM; 203 goto bailout; 204 } 205 206 if (xpt_create_path(&softc->path, /*periph*/NULL, 207 cam_sim_path(softc->sim), 208 CAM_TARGET_WILDCARD, 209 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 210 printf("%s: error creating path\n", __func__); 211 xpt_bus_deregister(cam_sim_path(softc->sim)); 212 retval = EINVAL; 213 goto bailout; 214 } 215 216 mtx_unlock(&softc->lock); 217 218 return (retval); 219 220bailout: 221 if (softc->sim) 222 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 223 else if (softc->devq) 224 cam_simq_free(softc->devq); 225 mtx_unlock(&softc->lock); 226 mtx_destroy(&softc->lock); 227 228 return (retval); 229} 230 231static int 232cfcs_shutdown(void) 233{ 234 struct cfcs_softc *softc = &cfcs_softc; 235 struct ctl_port *port = &softc->port; 236 int error; 237 238 ctl_port_offline(port); 239 240 mtx_lock(&softc->lock); 241 xpt_free_path(softc->path); 242 xpt_bus_deregister(cam_sim_path(softc->sim)); 243 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 244 mtx_unlock(&softc->lock); 245 mtx_destroy(&softc->lock); 246 247 if ((error = ctl_port_deregister(port)) != 0) 248 printf("%s: cam_sim port deregistration failed\n", __func__); 249 return (error); 250} 251 252static void 253cfcs_poll(struct cam_sim *sim) 254{ 255 256} 257 258static void 259cfcs_onoffline(void *arg, int online) 260{ 261 struct cfcs_softc *softc; 262 union ccb *ccb; 263 264 softc = (struct cfcs_softc *)arg; 265 266 mtx_lock(&softc->lock); 267 softc->online = online; 268 269 ccb = xpt_alloc_ccb_nowait(); 270 if (ccb == NULL) { 271 printf("%s: unable to allocate CCB for rescan\n", __func__); 272 goto bailout; 273 } 274 275 if (xpt_create_path(&ccb->ccb_h.path, NULL, 276 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 277 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 278 printf("%s: can't allocate path for rescan\n", __func__); 279 xpt_free_ccb(ccb); 280 goto bailout; 281 } 282 xpt_rescan(ccb); 283 284bailout: 285 mtx_unlock(&softc->lock); 286} 287 288static void 289cfcs_online(void *arg) 290{ 291 cfcs_onoffline(arg, /*online*/ 1); 292} 293 294static void 295cfcs_offline(void *arg) 296{ 297 cfcs_onoffline(arg, /*online*/ 0); 298} 299 300/* 301 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 302 * way to combine the functionality? 303 * 304 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 305 * caller's context, which will usually be the backend. That may not be a 306 * good thing. 307 */ 308static void 309cfcs_datamove(union ctl_io *io) 310{ 311 union ccb *ccb; 312 bus_dma_segment_t cam_sg_entry, *cam_sglist; 313 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 314 int cam_sg_count, ctl_sg_count, cam_sg_start; 315 int cam_sg_offset; 316 int len_to_copy; 317 int ctl_watermark, cam_watermark; 318 int i, j; 319 320 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 321 322 /* 323 * Note that we have a check in cfcs_action() to make sure that any 324 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 325 * is just to make sure no one removes that check without updating 326 * this code to provide the additional functionality necessary to 327 * support those modes of operation. 328 */ 329 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 330 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 331 332 /* 333 * Simplify things on both sides by putting single buffers into a 334 * single entry S/G list. 335 */ 336 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 337 case CAM_DATA_SG: { 338 int len_seen; 339 340 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 341 cam_sg_count = ccb->csio.sglist_cnt; 342 cam_sg_start = cam_sg_count; 343 cam_sg_offset = 0; 344 345 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 346 if ((len_seen + cam_sglist[i].ds_len) >= 347 io->scsiio.kern_rel_offset) { 348 cam_sg_start = i; 349 cam_sg_offset = io->scsiio.kern_rel_offset - 350 len_seen; 351 break; 352 } 353 len_seen += cam_sglist[i].ds_len; 354 } 355 break; 356 } 357 case CAM_DATA_VADDR: 358 cam_sglist = &cam_sg_entry; 359 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 360 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 361 cam_sg_count = 1; 362 cam_sg_start = 0; 363 cam_sg_offset = io->scsiio.kern_rel_offset; 364 break; 365 default: 366 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 367 } 368 369 if (io->scsiio.kern_sg_entries > 0) { 370 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 371 ctl_sg_count = io->scsiio.kern_sg_entries; 372 } else { 373 ctl_sglist = &ctl_sg_entry; 374 ctl_sglist->addr = io->scsiio.kern_data_ptr; 375 ctl_sglist->len = io->scsiio.kern_data_len; 376 ctl_sg_count = 1; 377 } 378 379 ctl_watermark = 0; 380 cam_watermark = cam_sg_offset; 381 for (i = cam_sg_start, j = 0; 382 i < cam_sg_count && j < ctl_sg_count;) { 383 uint8_t *cam_ptr, *ctl_ptr; 384 385 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 386 ctl_sglist[j].len - ctl_watermark); 387 388 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 389 cam_ptr = cam_ptr + cam_watermark; 390 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 391 /* 392 * XXX KDM fix this! 393 */ 394 panic("need to implement bus address support"); 395#if 0 396 kern_ptr = bus_to_virt(kern_sglist[j].addr); 397#endif 398 } else 399 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 400 ctl_ptr = ctl_ptr + ctl_watermark; 401 402 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 403 CTL_FLAG_DATA_IN) { 404 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 405 __func__, len_to_copy)); 406 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 407 __func__, cam_ptr)); 408 bcopy(ctl_ptr, cam_ptr, len_to_copy); 409 } else { 410 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 411 __func__, len_to_copy)); 412 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 413 __func__, ctl_ptr)); 414 bcopy(cam_ptr, ctl_ptr, len_to_copy); 415 } 416 417 io->scsiio.ext_data_filled += len_to_copy; 418 io->scsiio.kern_data_resid -= len_to_copy; 419 420 cam_watermark += len_to_copy; 421 if (cam_sglist[i].ds_len == cam_watermark) { 422 i++; 423 cam_watermark = 0; 424 } 425 426 ctl_watermark += len_to_copy; 427 if (ctl_sglist[j].len == ctl_watermark) { 428 j++; 429 ctl_watermark = 0; 430 } 431 } 432 433 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 434 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 435 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 436 ccb->csio.resid = ccb->csio.dxfer_len - 437 io->scsiio.ext_data_filled; 438 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 439 ccb->ccb_h.status |= CAM_REQ_CMP; 440 xpt_done(ccb); 441 } 442 443 io->scsiio.be_move_done(io); 444} 445 446static void 447cfcs_done(union ctl_io *io) 448{ 449 union ccb *ccb; 450 451 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 452 if (ccb == NULL) { 453 ctl_free_io(io); 454 return; 455 } 456 457 /* 458 * At this point we should have status. If we don't, that's a bug. 459 */ 460 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 461 ("invalid CTL status %#x", io->io_hdr.status)); 462 463 /* 464 * Translate CTL status to CAM status. 465 */ 466 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 467 ccb->csio.resid = ccb->csio.dxfer_len - 468 io->scsiio.ext_data_filled; 469 } 470 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 471 switch (io->io_hdr.status & CTL_STATUS_MASK) { 472 case CTL_SUCCESS: 473 ccb->ccb_h.status |= CAM_REQ_CMP; 474 break; 475 case CTL_SCSI_ERROR: 476 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 477 ccb->csio.scsi_status = io->scsiio.scsi_status; 478 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 479 min(io->scsiio.sense_len, ccb->csio.sense_len)); 480 if (ccb->csio.sense_len > io->scsiio.sense_len) 481 ccb->csio.sense_resid = ccb->csio.sense_len - 482 io->scsiio.sense_len; 483 else 484 ccb->csio.sense_resid = 0; 485 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 486 cfcs_max_sense) { 487 ccb->csio.sense_resid = ccb->csio.sense_len - 488 cfcs_max_sense; 489 } 490 break; 491 case CTL_CMD_ABORTED: 492 ccb->ccb_h.status |= CAM_REQ_ABORTED; 493 break; 494 case CTL_ERROR: 495 default: 496 ccb->ccb_h.status |= CAM_REQ_CMP_ERR; 497 break; 498 } 499 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP && 500 (ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 501 xpt_freeze_devq(ccb->ccb_h.path, 1); 502 ccb->ccb_h.status |= CAM_DEV_QFRZN; 503 } 504 xpt_done(ccb); 505 ctl_free_io(io); 506} 507 508void 509cfcs_action(struct cam_sim *sim, union ccb *ccb) 510{ 511 struct cfcs_softc *softc; 512 int err; 513 514 softc = (struct cfcs_softc *)cam_sim_softc(sim); 515 mtx_assert(&softc->lock, MA_OWNED); 516 517 switch (ccb->ccb_h.func_code) { 518 case XPT_SCSI_IO: { 519 union ctl_io *io; 520 struct ccb_scsiio *csio; 521 522 csio = &ccb->csio; 523 524 /* 525 * Catch CCB flags, like physical address flags, that 526 * indicate situations we currently can't handle. 527 */ 528 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 529 ccb->ccb_h.status = CAM_REQ_INVALID; 530 printf("%s: bad CCB flags %#x (all flags %#x)\n", 531 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 532 ccb->ccb_h.flags); 533 xpt_done(ccb); 534 return; 535 } 536 537 /* 538 * If we aren't online, there are no devices to see. 539 */ 540 if (softc->online == 0) { 541 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 542 xpt_done(ccb); 543 return; 544 } 545 546 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 547 if (io == NULL) { 548 printf("%s: can't allocate ctl_io\n", __func__); 549 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 550 xpt_freeze_devq(ccb->ccb_h.path, 1); 551 xpt_done(ccb); 552 return; 553 } 554 ctl_zero_io(io); 555 /* Save pointers on both sides */ 556 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 557 ccb->ccb_h.io_ptr = io; 558 559 /* 560 * Only SCSI I/O comes down this path, resets, etc. come 561 * down via the XPT_RESET_BUS/LUN CCBs below. 562 */ 563 io->io_hdr.io_type = CTL_IO_SCSI; 564 io->io_hdr.nexus.initid = 1; 565 io->io_hdr.nexus.targ_port = softc->port.targ_port; 566 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 567 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 568 /* 569 * This tag scheme isn't the best, since we could in theory 570 * have a very long-lived I/O and tag collision, especially 571 * in a high I/O environment. But it should work well 572 * enough for now. Since we're using unsigned ints, 573 * they'll just wrap around. 574 */ 575 io->scsiio.tag_num = softc->cur_tag_num++; 576 csio->tag_id = io->scsiio.tag_num; 577 switch (csio->tag_action) { 578 case CAM_TAG_ACTION_NONE: 579 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 580 break; 581 case MSG_SIMPLE_TASK: 582 io->scsiio.tag_type = CTL_TAG_SIMPLE; 583 break; 584 case MSG_HEAD_OF_QUEUE_TASK: 585 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 586 break; 587 case MSG_ORDERED_TASK: 588 io->scsiio.tag_type = CTL_TAG_ORDERED; 589 break; 590 case MSG_ACA_TASK: 591 io->scsiio.tag_type = CTL_TAG_ACA; 592 break; 593 default: 594 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 595 printf("%s: unhandled tag type %#x!!\n", __func__, 596 csio->tag_action); 597 break; 598 } 599 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 600 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 601 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 602 } 603 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 604 bcopy(scsiio_cdb_ptr(csio), io->scsiio.cdb, io->scsiio.cdb_len); 605 606 ccb->ccb_h.status |= CAM_SIM_QUEUED; 607 err = ctl_queue(io); 608 if (err != CTL_RETVAL_COMPLETE) { 609 printf("%s: func %d: error %d returned by " 610 "ctl_queue()!\n", __func__, 611 ccb->ccb_h.func_code, err); 612 ctl_free_io(io); 613 ccb->ccb_h.status = CAM_REQ_INVALID; 614 xpt_done(ccb); 615 return; 616 } 617 break; 618 } 619 case XPT_ABORT: { 620 union ctl_io *io; 621 union ccb *abort_ccb; 622 623 abort_ccb = ccb->cab.abort_ccb; 624 625 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 626 ccb->ccb_h.status = CAM_REQ_INVALID; 627 xpt_done(ccb); 628 } 629 630 /* 631 * If we aren't online, there are no devices to talk to. 632 */ 633 if (softc->online == 0) { 634 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 635 xpt_done(ccb); 636 return; 637 } 638 639 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 640 if (io == NULL) { 641 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 642 xpt_freeze_devq(ccb->ccb_h.path, 1); 643 xpt_done(ccb); 644 return; 645 } 646 647 ctl_zero_io(io); 648 /* Save pointers on both sides */ 649 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 650 ccb->ccb_h.io_ptr = io; 651 652 io->io_hdr.io_type = CTL_IO_TASK; 653 io->io_hdr.nexus.initid = 1; 654 io->io_hdr.nexus.targ_port = softc->port.targ_port; 655 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 656 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 657 io->taskio.task_action = CTL_TASK_ABORT_TASK; 658 io->taskio.tag_num = abort_ccb->csio.tag_id; 659 switch (abort_ccb->csio.tag_action) { 660 case CAM_TAG_ACTION_NONE: 661 io->taskio.tag_type = CTL_TAG_UNTAGGED; 662 break; 663 case MSG_SIMPLE_TASK: 664 io->taskio.tag_type = CTL_TAG_SIMPLE; 665 break; 666 case MSG_HEAD_OF_QUEUE_TASK: 667 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 668 break; 669 case MSG_ORDERED_TASK: 670 io->taskio.tag_type = CTL_TAG_ORDERED; 671 break; 672 case MSG_ACA_TASK: 673 io->taskio.tag_type = CTL_TAG_ACA; 674 break; 675 default: 676 io->taskio.tag_type = CTL_TAG_UNTAGGED; 677 printf("%s: unhandled tag type %#x!!\n", __func__, 678 abort_ccb->csio.tag_action); 679 break; 680 } 681 err = ctl_queue(io); 682 if (err != CTL_RETVAL_COMPLETE) { 683 printf("%s func %d: error %d returned by " 684 "ctl_queue()!\n", __func__, 685 ccb->ccb_h.func_code, err); 686 ctl_free_io(io); 687 } 688 break; 689 } 690 case XPT_GET_TRAN_SETTINGS: { 691 struct ccb_trans_settings *cts; 692 struct ccb_trans_settings_scsi *scsi; 693 struct ccb_trans_settings_fc *fc; 694 695 cts = &ccb->cts; 696 scsi = &cts->proto_specific.scsi; 697 fc = &cts->xport_specific.fc; 698 699 700 cts->protocol = PROTO_SCSI; 701 cts->protocol_version = SCSI_REV_SPC2; 702 cts->transport = XPORT_FC; 703 cts->transport_version = 0; 704 705 scsi->valid = CTS_SCSI_VALID_TQ; 706 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 707 fc->valid = CTS_FC_VALID_SPEED; 708 fc->bitrate = 800000; 709 fc->wwnn = softc->wwnn; 710 fc->wwpn = softc->wwpn; 711 fc->port = softc->port.targ_port; 712 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 713 CTS_FC_VALID_PORT; 714 ccb->ccb_h.status = CAM_REQ_CMP; 715 break; 716 } 717 case XPT_SET_TRAN_SETTINGS: 718 /* XXX KDM should we actually do something here? */ 719 ccb->ccb_h.status = CAM_REQ_CMP; 720 break; 721 case XPT_RESET_BUS: 722 case XPT_RESET_DEV: { 723 union ctl_io *io; 724 725 /* 726 * If we aren't online, there are no devices to talk to. 727 */ 728 if (softc->online == 0) { 729 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 730 xpt_done(ccb); 731 return; 732 } 733 734 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 735 if (io == NULL) { 736 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 737 xpt_freeze_devq(ccb->ccb_h.path, 1); 738 xpt_done(ccb); 739 return; 740 } 741 742 ctl_zero_io(io); 743 /* Save pointers on both sides */ 744 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 745 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 746 ccb->ccb_h.io_ptr = io; 747 748 io->io_hdr.io_type = CTL_IO_TASK; 749 io->io_hdr.nexus.initid = 1; 750 io->io_hdr.nexus.targ_port = softc->port.targ_port; 751 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 752 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 753 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 754 io->taskio.task_action = CTL_TASK_BUS_RESET; 755 else 756 io->taskio.task_action = CTL_TASK_LUN_RESET; 757 758 err = ctl_queue(io); 759 if (err != CTL_RETVAL_COMPLETE) { 760 printf("%s func %d: error %d returned by " 761 "ctl_queue()!\n", __func__, 762 ccb->ccb_h.func_code, err); 763 ctl_free_io(io); 764 } 765 break; 766 } 767 case XPT_CALC_GEOMETRY: 768 cam_calc_geometry(&ccb->ccg, 1); 769 xpt_done(ccb); 770 break; 771 case XPT_PATH_INQ: { 772 struct ccb_pathinq *cpi; 773 774 cpi = &ccb->cpi; 775 776 cpi->version_num = 0; 777 cpi->hba_inquiry = PI_TAG_ABLE; 778 cpi->target_sprt = 0; 779 cpi->hba_misc = PIM_EXTLUNS; 780 cpi->hba_eng_cnt = 0; 781 cpi->max_target = 1; 782 cpi->max_lun = 1024; 783 /* Do we really have a limit? */ 784 cpi->maxio = 1024 * 1024; 785 cpi->async_flags = 0; 786 cpi->hpath_id = 0; 787 cpi->initiator_id = 0; 788 789 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 790 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 791 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 792 cpi->unit_number = 0; 793 cpi->bus_id = 0; 794 cpi->base_transfer_speed = 800000; 795 cpi->protocol = PROTO_SCSI; 796 cpi->protocol_version = SCSI_REV_SPC2; 797 /* 798 * Pretend to be Fibre Channel. 799 */ 800 cpi->transport = XPORT_FC; 801 cpi->transport_version = 0; 802 cpi->xport_specific.fc.wwnn = softc->wwnn; 803 cpi->xport_specific.fc.wwpn = softc->wwpn; 804 cpi->xport_specific.fc.port = softc->port.targ_port; 805 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 806 cpi->ccb_h.status = CAM_REQ_CMP; 807 break; 808 } 809 default: 810 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 811 printf("%s: unsupported CCB type %#x\n", __func__, 812 ccb->ccb_h.func_code); 813 xpt_done(ccb); 814 break; 815 } 816} 817