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 315813 2017-03-23 06:41:13Z 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
71 struct cfcs_io {
72 union ccb *ccb;
73 };
74
75 struct 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
97 static int cfcs_init(void);
98 static int cfcs_shutdown(void);
99 static void cfcs_poll(struct cam_sim *sim);
100 static void cfcs_online(void *arg);
101 static void cfcs_offline(void *arg);
102 static void cfcs_datamove(union ctl_io *io);
103 static void cfcs_done(union ctl_io *io);
104 void cfcs_action(struct cam_sim *sim, union ccb *ccb);
105
106 struct 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 */
112 static int cfcs_max_sense = sizeof(struct scsi_sense_data);
113
114 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0,
115 "CAM Target Layer SIM frontend");
116 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW,
117 &cfcs_max_sense, 0, "Maximum sense data size");
118
119 static struct ctl_frontend cfcs_frontend =
120 {
121 .name = "camsim",
122 .init = cfcs_init,
123 .shutdown = cfcs_shutdown,
124 };
125 CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend);
126
127 static int
cfcs_init(void)128 cfcs_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
220 bailout:
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
231 static int
cfcs_shutdown(void)232 cfcs_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
252 static void
cfcs_poll(struct cam_sim * sim)253 cfcs_poll(struct cam_sim *sim)
254 {
255
256 }
257
258 static void
cfcs_onoffline(void * arg,int online)259 cfcs_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
284 bailout:
285 mtx_unlock(&softc->lock);
286 }
287
288 static void
cfcs_online(void * arg)289 cfcs_online(void *arg)
290 {
291 cfcs_onoffline(arg, /*online*/ 1);
292 }
293
294 static void
cfcs_offline(void * arg)295 cfcs_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 */
308 static void
cfcs_datamove(union ctl_io * io)309 cfcs_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
446 static void
cfcs_done(union ctl_io * io)447 cfcs_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
508 void
cfcs_action(struct cam_sim * sim,union ccb * ccb)509 cfcs_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 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
790 strlcpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN);
791 strlcpy(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