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sys/cam/ctl/ctl_frontend_cam_sim.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009 Silicon Graphics International Corp. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification. 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14 * substantially similar to the "NO WARRANTY" disclaimer below 15 * ("Disclaimer") and any redistribution must be conditioned upon 16 * including a substantially similar Disclaimer requirement for further 17 * binary redistribution. 18 * 19 * NO WARRANTY 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGES. 31 * 32 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_frontend_cam_sim.c#4 $ 33 */ 34 /* 35 * CTL frontend to CAM SIM interface. This allows access to CTL LUNs via 36 * the da(4) and pass(4) drivers from inside the system. 37 * 38 * Author: Ken Merry <ken@FreeBSD.org> 39 */ 40 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/types.h> 48 #include <sys/malloc.h> 49 #include <sys/bus.h> 50 #include <sys/sysctl.h> 51 #include <machine/atomic.h> 52 #include <machine/bus.h> 53 #include <sys/sbuf.h> 54 55 #include <cam/cam.h> 56 #include <cam/cam_ccb.h> 57 #include <cam/cam_sim.h> 58 #include <cam/cam_xpt_sim.h> 59 #include <cam/cam_xpt.h> 60 #include <cam/cam_periph.h> 61 #include <cam/scsi/scsi_all.h> 62 #include <cam/scsi/scsi_message.h> 63 #include <cam/ctl/ctl_io.h> 64 #include <cam/ctl/ctl.h> 65 #include <cam/ctl/ctl_frontend.h> 66 #include <cam/ctl/ctl_debug.h> 67 68 #define io_ptr spriv_ptr1 69 70 struct cfcs_io { 71 union ccb *ccb; 72 }; 73 74 struct cfcs_softc { 75 struct ctl_port port; 76 char port_name[32]; 77 struct cam_sim *sim; 78 struct cam_devq *devq; 79 struct cam_path *path; 80 uint64_t wwnn; 81 uint64_t wwpn; 82 uint32_t cur_tag_num; 83 int online; 84 }; 85 86 /* 87 * We can't handle CCBs with these flags. For the most part, we just don't 88 * handle physical addresses yet. That would require mapping things in 89 * order to do the copy. 90 */ 91 #define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 92 CAM_SENSE_PHYS) 93 94 static int cfcs_init(void); 95 static int cfcs_shutdown(void); 96 static void cfcs_poll(struct cam_sim *sim); 97 static void cfcs_online(void *arg); 98 static void cfcs_offline(void *arg); 99 static void cfcs_datamove(union ctl_io *io); 100 static void cfcs_done(union ctl_io *io); 101 void cfcs_action(struct cam_sim *sim, union ccb *ccb); 102 103 struct cfcs_softc cfcs_softc; 104 /* 105 * This is primarily intended to allow for error injection to test the CAM 106 * sense data and sense residual handling code. This sets the maximum 107 * amount of SCSI sense data that we will report to CAM. 108 */ 109 static int cfcs_max_sense = sizeof(struct scsi_sense_data); 110 111 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 112 "CAM Target Layer SIM frontend"); 113 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 114 &cfcs_max_sense, 0, "Maximum sense data size"); 115 116 static struct ctl_frontend cfcs_frontend = 117 { 118 .name = "camsim", 119 .init = cfcs_init, 120 .shutdown = cfcs_shutdown, 121 }; 122 CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 123 124 static int 125 cfcs_init(void) 126 { 127 struct cfcs_softc *softc; 128 struct ctl_port *port; 129 int retval; 130 131 softc = &cfcs_softc; 132 bzero(softc, sizeof(*softc)); 133 port = &softc->port; 134 135 port->frontend = &cfcs_frontend; 136 port->port_type = CTL_PORT_INTERNAL; 137 /* XXX KDM what should the real number be here? */ 138 port->num_requested_ctl_io = 4096; 139 snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 140 port->port_name = softc->port_name; 141 port->port_online = cfcs_online; 142 port->port_offline = cfcs_offline; 143 port->onoff_arg = softc; 144 port->fe_datamove = cfcs_datamove; 145 port->fe_done = cfcs_done; 146 port->targ_port = -1; 147 148 retval = ctl_port_register(port); 149 if (retval != 0) { 150 printf("%s: ctl_port_register() failed with error %d!\n", 151 __func__, retval); 152 return (retval); 153 } 154 155 /* 156 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 157 * ahead and set something random. 158 */ 159 if (port->wwnn == 0) { 160 uint64_t random_bits; 161 162 arc4rand(&random_bits, sizeof(random_bits), 0); 163 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 164 /* Company ID */ 0x5000000000000000ULL | 165 /* NL-Port */ 0x0300; 166 softc->wwpn = softc->wwnn + port->targ_port + 1; 167 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 168 } else { 169 softc->wwnn = port->wwnn; 170 softc->wwpn = port->wwpn; 171 } 172 173 softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 174 if (softc->devq == NULL) { 175 printf("%s: error allocating devq\n", __func__); 176 retval = ENOMEM; 177 goto bailout; 178 } 179 180 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 181 softc, /*unit*/ 0, NULL, 1, 182 port->num_requested_ctl_io, softc->devq); 183 if (softc->sim == NULL) { 184 printf("%s: error allocating SIM\n", __func__); 185 retval = ENOMEM; 186 goto bailout; 187 } 188 189 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 190 printf("%s: error registering SIM\n", __func__); 191 retval = ENOMEM; 192 goto bailout; 193 } 194 195 if (xpt_create_path(&softc->path, /*periph*/NULL, 196 cam_sim_path(softc->sim), 197 CAM_TARGET_WILDCARD, 198 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 199 printf("%s: error creating path\n", __func__); 200 xpt_bus_deregister(cam_sim_path(softc->sim)); 201 retval = EINVAL; 202 goto bailout; 203 } 204 205 return (retval); 206 207 bailout: 208 if (softc->sim) 209 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 210 else if (softc->devq) 211 cam_simq_free(softc->devq); 212 return (retval); 213 } 214 215 static int 216 cfcs_shutdown(void) 217 { 218 struct cfcs_softc *softc = &cfcs_softc; 219 struct ctl_port *port = &softc->port; 220 int error; 221 222 ctl_port_offline(port); 223 224 xpt_free_path(softc->path); 225 xpt_bus_deregister(cam_sim_path(softc->sim)); 226 cam_sim_free(softc->sim, /*free_devq*/ TRUE); 227 228 if ((error = ctl_port_deregister(port)) != 0) 229 printf("%s: cam_sim port deregistration failed\n", __func__); 230 return (error); 231 } 232 233 static void 234 cfcs_poll(struct cam_sim *sim) 235 { 236 237 } 238 239 static void 240 cfcs_onoffline(void *arg, int online) 241 { 242 struct cfcs_softc *softc = (struct cfcs_softc *)arg; 243 union ccb *ccb; 244 245 softc->online = online; 246 247 ccb = xpt_alloc_ccb_nowait(); 248 if (ccb == NULL) { 249 printf("%s: unable to allocate CCB for rescan\n", __func__); 250 return; 251 } 252 253 if (xpt_create_path(&ccb->ccb_h.path, NULL, 254 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 255 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 256 printf("%s: can't allocate path for rescan\n", __func__); 257 xpt_free_ccb(ccb); 258 return; 259 } 260 xpt_rescan(ccb); 261 } 262 263 static void 264 cfcs_online(void *arg) 265 { 266 cfcs_onoffline(arg, /*online*/ 1); 267 } 268 269 static void 270 cfcs_offline(void *arg) 271 { 272 cfcs_onoffline(arg, /*online*/ 0); 273 } 274 275 /* 276 * This function is very similar to ctl_ioctl_do_datamove(). Is there a 277 * way to combine the functionality? 278 * 279 * XXX KDM may need to move this into a thread. We're doing a bcopy in the 280 * caller's context, which will usually be the backend. That may not be a 281 * good thing. 282 */ 283 static void 284 cfcs_datamove(union ctl_io *io) 285 { 286 union ccb *ccb; 287 bus_dma_segment_t cam_sg_entry, *cam_sglist; 288 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 289 int cam_sg_count, ctl_sg_count, cam_sg_start; 290 int cam_sg_offset; 291 int len_to_copy; 292 int ctl_watermark, cam_watermark; 293 int i, j; 294 295 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 296 297 /* 298 * Note that we have a check in cfcs_action() to make sure that any 299 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 300 * is just to make sure no one removes that check without updating 301 * this code to provide the additional functionality necessary to 302 * support those modes of operation. 303 */ 304 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 305 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 306 307 /* 308 * Simplify things on both sides by putting single buffers into a 309 * single entry S/G list. 310 */ 311 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 312 case CAM_DATA_SG: { 313 int len_seen; 314 315 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 316 cam_sg_count = ccb->csio.sglist_cnt; 317 cam_sg_start = cam_sg_count; 318 cam_sg_offset = 0; 319 320 for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 321 if ((len_seen + cam_sglist[i].ds_len) >= 322 io->scsiio.kern_rel_offset) { 323 cam_sg_start = i; 324 cam_sg_offset = io->scsiio.kern_rel_offset - 325 len_seen; 326 break; 327 } 328 len_seen += cam_sglist[i].ds_len; 329 } 330 break; 331 } 332 case CAM_DATA_VADDR: 333 cam_sglist = &cam_sg_entry; 334 cam_sglist[0].ds_len = ccb->csio.dxfer_len; 335 cam_sglist[0].ds_addr = (bus_addr_t)(uintptr_t)ccb->csio.data_ptr; 336 cam_sg_count = 1; 337 cam_sg_start = 0; 338 cam_sg_offset = io->scsiio.kern_rel_offset; 339 break; 340 default: 341 panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 342 } 343 344 if (io->scsiio.kern_sg_entries > 0) { 345 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 346 ctl_sg_count = io->scsiio.kern_sg_entries; 347 } else { 348 ctl_sglist = &ctl_sg_entry; 349 ctl_sglist->addr = io->scsiio.kern_data_ptr; 350 ctl_sglist->len = io->scsiio.kern_data_len; 351 ctl_sg_count = 1; 352 } 353 354 ctl_watermark = 0; 355 cam_watermark = cam_sg_offset; 356 for (i = cam_sg_start, j = 0; 357 i < cam_sg_count && j < ctl_sg_count;) { 358 uint8_t *cam_ptr, *ctl_ptr; 359 360 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark, 361 ctl_sglist[j].len - ctl_watermark); 362 363 cam_ptr = (uint8_t *)(uintptr_t)cam_sglist[i].ds_addr; 364 cam_ptr = cam_ptr + cam_watermark; 365 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 366 /* 367 * XXX KDM fix this! 368 */ 369 panic("need to implement bus address support"); 370 #if 0 371 kern_ptr = bus_to_virt(kern_sglist[j].addr); 372 #endif 373 } else 374 ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 375 ctl_ptr = ctl_ptr + ctl_watermark; 376 377 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 378 CTL_FLAG_DATA_IN) { 379 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 380 __func__, len_to_copy)); 381 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 382 __func__, cam_ptr)); 383 bcopy(ctl_ptr, cam_ptr, len_to_copy); 384 } else { 385 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 386 __func__, len_to_copy)); 387 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 388 __func__, ctl_ptr)); 389 bcopy(cam_ptr, ctl_ptr, len_to_copy); 390 } 391 392 io->scsiio.ext_data_filled += len_to_copy; 393 io->scsiio.kern_data_resid -= len_to_copy; 394 395 cam_watermark += len_to_copy; 396 if (cam_sglist[i].ds_len == cam_watermark) { 397 i++; 398 cam_watermark = 0; 399 } 400 401 ctl_watermark += len_to_copy; 402 if (ctl_sglist[j].len == ctl_watermark) { 403 j++; 404 ctl_watermark = 0; 405 } 406 } 407 408 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 409 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 410 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 411 ccb->csio.resid = ccb->csio.dxfer_len - 412 io->scsiio.ext_data_filled; 413 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 414 ccb->ccb_h.status |= CAM_REQ_CMP; 415 xpt_done(ccb); 416 } 417 418 ctl_datamove_done(io, true); 419 } 420 421 static void 422 cfcs_done(union ctl_io *io) 423 { 424 union ccb *ccb; 425 426 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 427 if (ccb == NULL) { 428 ctl_free_io(io); 429 return; 430 } 431 432 /* 433 * At this point we should have status. If we don't, that's a bug. 434 */ 435 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 436 ("invalid CTL status %#x", io->io_hdr.status)); 437 438 /* 439 * Translate CTL status to CAM status. 440 */ 441 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 442 ccb->csio.resid = ccb->csio.dxfer_len - 443 io->scsiio.ext_data_filled; 444 } 445 ccb->ccb_h.status &= ~CAM_STATUS_MASK; 446 switch (io->io_hdr.status & CTL_STATUS_MASK) { 447 case CTL_SUCCESS: 448 ccb->ccb_h.status |= CAM_REQ_CMP; 449 break; 450 case CTL_SCSI_ERROR: 451 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 452 ccb->csio.scsi_status = io->scsiio.scsi_status; 453 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 454 min(io->scsiio.sense_len, ccb->csio.sense_len)); 455 if (ccb->csio.sense_len > io->scsiio.sense_len) 456 ccb->csio.sense_resid = ccb->csio.sense_len - 457 io->scsiio.sense_len; 458 else 459 ccb->csio.sense_resid = 0; 460 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 461 cfcs_max_sense) { 462 ccb->csio.sense_resid = ccb->csio.sense_len - 463 cfcs_max_sense; 464 } 465 break; 466 case CTL_CMD_ABORTED: 467 ccb->ccb_h.status |= CAM_REQ_ABORTED; 468 break; 469 case CTL_ERROR: 470 default: 471 ccb->ccb_h.status |= CAM_REQ_CMP_ERR; 472 break; 473 } 474 ctl_free_io(io); 475 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP && 476 (ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 477 xpt_freeze_devq(ccb->ccb_h.path, 1); 478 ccb->ccb_h.status |= CAM_DEV_QFRZN; 479 } 480 xpt_done(ccb); 481 } 482 483 void 484 cfcs_action(struct cam_sim *sim, union ccb *ccb) 485 { 486 struct cfcs_softc *softc; 487 int err; 488 489 softc = (struct cfcs_softc *)cam_sim_softc(sim); 490 491 switch (ccb->ccb_h.func_code) { 492 case XPT_SCSI_IO: { 493 union ctl_io *io; 494 struct ccb_scsiio *csio; 495 496 csio = &ccb->csio; 497 498 /* 499 * Catch CCB flags, like physical address flags, that 500 * indicate situations we currently can't handle. 501 */ 502 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 503 ccb->ccb_h.status = CAM_REQ_INVALID; 504 printf("%s: bad CCB flags %#x (all flags %#x)\n", 505 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 506 ccb->ccb_h.flags); 507 xpt_done(ccb); 508 return; 509 } 510 511 /* 512 * If we aren't online, there are no devices to see. 513 */ 514 if (softc->online == 0) { 515 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 516 xpt_done(ccb); 517 return; 518 } 519 520 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 521 if (io == NULL) { 522 printf("%s: can't allocate ctl_io\n", __func__); 523 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 524 xpt_freeze_devq(ccb->ccb_h.path, 1); 525 xpt_done(ccb); 526 return; 527 } 528 ctl_zero_io(io); 529 /* Save pointers on both sides */ 530 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 531 ccb->ccb_h.io_ptr = io; 532 533 /* 534 * Only SCSI I/O comes down this path, resets, etc. come 535 * down via the XPT_RESET_BUS/LUN CCBs below. 536 */ 537 io->io_hdr.io_type = CTL_IO_SCSI; 538 io->io_hdr.nexus.initid = 1; 539 io->io_hdr.nexus.targ_port = softc->port.targ_port; 540 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 541 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 542 io->scsiio.priority = csio->priority; 543 /* 544 * This tag scheme isn't the best, since we could in theory 545 * have a very long-lived I/O and tag collision, especially 546 * in a high I/O environment. But it should work well 547 * enough for now. Since we're using unsigned ints, 548 * they'll just wrap around. 549 */ 550 io->scsiio.tag_num = atomic_fetchadd_32(&softc->cur_tag_num, 1); 551 csio->tag_id = io->scsiio.tag_num; 552 switch (csio->tag_action) { 553 case CAM_TAG_ACTION_NONE: 554 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 555 break; 556 case MSG_SIMPLE_TASK: 557 io->scsiio.tag_type = CTL_TAG_SIMPLE; 558 break; 559 case MSG_HEAD_OF_QUEUE_TASK: 560 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 561 break; 562 case MSG_ORDERED_TASK: 563 io->scsiio.tag_type = CTL_TAG_ORDERED; 564 break; 565 case MSG_ACA_TASK: 566 io->scsiio.tag_type = CTL_TAG_ACA; 567 break; 568 default: 569 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 570 printf("%s: unhandled tag type %#x!!\n", __func__, 571 csio->tag_action); 572 break; 573 } 574 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 575 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 576 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 577 } 578 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 579 bcopy(scsiio_cdb_ptr(csio), io->scsiio.cdb, io->scsiio.cdb_len); 580 581 ccb->ccb_h.status |= CAM_SIM_QUEUED; 582 err = ctl_queue(io); 583 if (err != CTL_RETVAL_COMPLETE) { 584 printf("%s: func %d: error %d returned by " 585 "ctl_queue()!\n", __func__, 586 ccb->ccb_h.func_code, err); 587 ctl_free_io(io); 588 ccb->ccb_h.status = CAM_REQ_INVALID; 589 xpt_done(ccb); 590 return; 591 } 592 break; 593 } 594 case XPT_ABORT: { 595 union ctl_io *io; 596 union ccb *abort_ccb; 597 598 abort_ccb = ccb->cab.abort_ccb; 599 600 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 601 ccb->ccb_h.status = CAM_REQ_INVALID; 602 xpt_done(ccb); 603 } 604 605 /* 606 * If we aren't online, there are no devices to talk to. 607 */ 608 if (softc->online == 0) { 609 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 610 xpt_done(ccb); 611 return; 612 } 613 614 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 615 if (io == NULL) { 616 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 617 xpt_freeze_devq(ccb->ccb_h.path, 1); 618 xpt_done(ccb); 619 return; 620 } 621 622 ctl_zero_io(io); 623 /* Save pointers on both sides */ 624 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 625 ccb->ccb_h.io_ptr = io; 626 627 io->io_hdr.io_type = CTL_IO_TASK; 628 io->io_hdr.nexus.initid = 1; 629 io->io_hdr.nexus.targ_port = softc->port.targ_port; 630 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 631 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 632 io->taskio.task_action = CTL_TASK_ABORT_TASK; 633 io->taskio.tag_num = abort_ccb->csio.tag_id; 634 switch (abort_ccb->csio.tag_action) { 635 case CAM_TAG_ACTION_NONE: 636 io->taskio.tag_type = CTL_TAG_UNTAGGED; 637 break; 638 case MSG_SIMPLE_TASK: 639 io->taskio.tag_type = CTL_TAG_SIMPLE; 640 break; 641 case MSG_HEAD_OF_QUEUE_TASK: 642 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 643 break; 644 case MSG_ORDERED_TASK: 645 io->taskio.tag_type = CTL_TAG_ORDERED; 646 break; 647 case MSG_ACA_TASK: 648 io->taskio.tag_type = CTL_TAG_ACA; 649 break; 650 default: 651 io->taskio.tag_type = CTL_TAG_UNTAGGED; 652 printf("%s: unhandled tag type %#x!!\n", __func__, 653 abort_ccb->csio.tag_action); 654 break; 655 } 656 err = ctl_queue(io); 657 if (err != CTL_RETVAL_COMPLETE) { 658 printf("%s func %d: error %d returned by " 659 "ctl_queue()!\n", __func__, 660 ccb->ccb_h.func_code, err); 661 ctl_free_io(io); 662 } 663 break; 664 } 665 case XPT_GET_TRAN_SETTINGS: { 666 struct ccb_trans_settings *cts; 667 struct ccb_trans_settings_scsi *scsi; 668 struct ccb_trans_settings_fc *fc; 669 670 cts = &ccb->cts; 671 scsi = &cts->proto_specific.scsi; 672 fc = &cts->xport_specific.fc; 673 674 675 cts->protocol = PROTO_SCSI; 676 cts->protocol_version = SCSI_REV_SPC2; 677 cts->transport = XPORT_FC; 678 cts->transport_version = 0; 679 680 scsi->valid = CTS_SCSI_VALID_TQ; 681 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 682 fc->valid = CTS_FC_VALID_SPEED; 683 fc->bitrate = 800000; 684 fc->wwnn = softc->wwnn; 685 fc->wwpn = softc->wwpn; 686 fc->port = softc->port.targ_port; 687 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 688 CTS_FC_VALID_PORT; 689 ccb->ccb_h.status = CAM_REQ_CMP; 690 break; 691 } 692 case XPT_SET_TRAN_SETTINGS: 693 /* XXX KDM should we actually do something here? */ 694 ccb->ccb_h.status = CAM_REQ_CMP; 695 break; 696 case XPT_RESET_BUS: 697 case XPT_RESET_DEV: { 698 union ctl_io *io; 699 700 /* 701 * If we aren't online, there are no devices to talk to. 702 */ 703 if (softc->online == 0) { 704 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 705 xpt_done(ccb); 706 return; 707 } 708 709 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 710 if (io == NULL) { 711 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 712 xpt_freeze_devq(ccb->ccb_h.path, 1); 713 xpt_done(ccb); 714 return; 715 } 716 717 ctl_zero_io(io); 718 /* Save pointers on both sides */ 719 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 720 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 721 ccb->ccb_h.io_ptr = io; 722 723 io->io_hdr.io_type = CTL_IO_TASK; 724 io->io_hdr.nexus.initid = 1; 725 io->io_hdr.nexus.targ_port = softc->port.targ_port; 726 io->io_hdr.nexus.targ_lun = ctl_decode_lun( 727 CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 728 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 729 io->taskio.task_action = CTL_TASK_BUS_RESET; 730 else 731 io->taskio.task_action = CTL_TASK_LUN_RESET; 732 733 err = ctl_queue(io); 734 if (err != CTL_RETVAL_COMPLETE) { 735 printf("%s func %d: error %d returned by " 736 "ctl_queue()!\n", __func__, 737 ccb->ccb_h.func_code, err); 738 ctl_free_io(io); 739 } 740 break; 741 } 742 case XPT_CALC_GEOMETRY: 743 cam_calc_geometry(&ccb->ccg, 1); 744 xpt_done(ccb); 745 break; 746 case XPT_PATH_INQ: { 747 struct ccb_pathinq *cpi; 748 749 cpi = &ccb->cpi; 750 751 cpi->version_num = 0; 752 cpi->hba_inquiry = PI_TAG_ABLE; 753 cpi->target_sprt = 0; 754 cpi->hba_misc = PIM_EXTLUNS; 755 cpi->hba_eng_cnt = 0; 756 cpi->max_target = 0; 757 cpi->max_lun = 1024; 758 /* Do we really have a limit? */ 759 cpi->maxio = 1024 * 1024; 760 cpi->async_flags = 0; 761 cpi->hpath_id = 0; 762 cpi->initiator_id = 1; 763 764 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 765 strlcpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 766 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 767 cpi->unit_number = 0; 768 cpi->bus_id = 0; 769 cpi->base_transfer_speed = 800000; 770 cpi->protocol = PROTO_SCSI; 771 cpi->protocol_version = SCSI_REV_SPC2; 772 /* 773 * Pretend to be Fibre Channel. 774 */ 775 cpi->transport = XPORT_FC; 776 cpi->transport_version = 0; 777 cpi->xport_specific.fc.wwnn = softc->wwnn; 778 cpi->xport_specific.fc.wwpn = softc->wwpn; 779 cpi->xport_specific.fc.port = softc->port.targ_port; 780 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 781 cpi->ccb_h.status = CAM_REQ_CMP; 782 break; 783 } 784 default: 785 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 786 printf("%s: unsupported CCB type %#x\n", __func__, 787 ccb->ccb_h.func_code); 788 xpt_done(ccb); 789 break; 790 } 791 }
Cache object: fcce1a3080b31df13e1be70bd7724026
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