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("$FreeBSD$");
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_frontend_internal.h>
68 #include <cam/ctl/ctl_debug.h>
69
70 #define io_ptr spriv_ptr1
71
72 struct cfcs_io {
73 union ccb *ccb;
74 };
75
76 struct cfcs_softc {
77 struct ctl_port port;
78 char port_name[32];
79 struct cam_sim *sim;
80 struct cam_devq *devq;
81 struct cam_path *path;
82 struct mtx lock;
83 uint64_t wwnn;
84 uint64_t wwpn;
85 uint32_t cur_tag_num;
86 int online;
87 };
88
89 /*
90 * We can't handle CCBs with these flags. For the most part, we just don't
91 * handle physical addresses yet. That would require mapping things in
92 * order to do the copy.
93 */
94 #define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \
95 CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \
96 CAM_SENSE_PHYS)
97
98 int cfcs_init(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 int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id);
103 static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id);
104 static void cfcs_datamove(union ctl_io *io);
105 static void cfcs_done(union ctl_io *io);
106 void cfcs_action(struct cam_sim *sim, union ccb *ccb);
107 static void cfcs_async(void *callback_arg, uint32_t code,
108 struct cam_path *path, void *arg);
109
110 struct cfcs_softc cfcs_softc;
111 /*
112 * This is primarly intended to allow for error injection to test the CAM
113 * sense data and sense residual handling code. This sets the maximum
114 * amount of SCSI sense data that we will report to CAM.
115 */
116 static int cfcs_max_sense = sizeof(struct scsi_sense_data);
117
118 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0,
119 "CAM Target Layer SIM frontend");
120 SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW,
121 &cfcs_max_sense, 0, "Maximum sense data size");
122
123 static struct ctl_frontend cfcs_frontend =
124 {
125 .name = "camsim",
126 .init = cfcs_init,
127 };
128 CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend);
129
130 int
cfcs_init(void)131 cfcs_init(void)
132 {
133 struct cfcs_softc *softc;
134 struct ccb_setasync csa;
135 struct ctl_port *port;
136 #ifdef NEEDTOPORT
137 char wwnn[8];
138 #endif
139 int retval;
140
141 softc = &cfcs_softc;
142 retval = 0;
143 bzero(softc, sizeof(*softc));
144 mtx_init(&softc->lock, "ctl2cam", NULL, MTX_DEF);
145 port = &softc->port;
146
147 port->frontend = &cfcs_frontend;
148 port->port_type = CTL_PORT_INTERNAL;
149 /* XXX KDM what should the real number be here? */
150 port->num_requested_ctl_io = 4096;
151 snprintf(softc->port_name, sizeof(softc->port_name), "camsim");
152 port->port_name = softc->port_name;
153 port->port_online = cfcs_online;
154 port->port_offline = cfcs_offline;
155 port->onoff_arg = softc;
156 port->lun_enable = cfcs_lun_enable;
157 port->lun_disable = cfcs_lun_disable;
158 port->targ_lun_arg = softc;
159 port->fe_datamove = cfcs_datamove;
160 port->fe_done = cfcs_done;
161
162 /* XXX KDM what should we report here? */
163 /* XXX These should probably be fetched from CTL. */
164 port->max_targets = 1;
165 port->max_target_id = 15;
166
167 retval = ctl_port_register(port);
168 if (retval != 0) {
169 printf("%s: ctl_port_register() failed with error %d!\n",
170 __func__, retval);
171 mtx_destroy(&softc->lock);
172 return (retval);
173 }
174
175 /*
176 * Get the WWNN out of the database, and create a WWPN as well.
177 */
178 #ifdef NEEDTOPORT
179 ddb_GetWWNN((char *)wwnn);
180 softc->wwnn = be64dec(wwnn);
181 softc->wwpn = softc->wwnn + (softc->port.targ_port & 0xff);
182 #endif
183
184 /*
185 * If the CTL frontend didn't tell us what our WWNN/WWPN is, go
186 * ahead and set something random.
187 */
188 if (port->wwnn == 0) {
189 uint64_t random_bits;
190
191 arc4rand(&random_bits, sizeof(random_bits), 0);
192 softc->wwnn = (random_bits & 0x0000000fffffff00ULL) |
193 /* Company ID */ 0x5000000000000000ULL |
194 /* NL-Port */ 0x0300;
195 softc->wwpn = softc->wwnn + port->targ_port + 1;
196 ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn);
197 } else {
198 softc->wwnn = port->wwnn;
199 softc->wwpn = port->wwpn;
200 }
201
202 mtx_lock(&softc->lock);
203 softc->devq = cam_simq_alloc(port->num_requested_ctl_io);
204 if (softc->devq == NULL) {
205 printf("%s: error allocating devq\n", __func__);
206 retval = ENOMEM;
207 goto bailout;
208 }
209
210 softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name,
211 softc, /*unit*/ 0, &softc->lock, 1,
212 port->num_requested_ctl_io, softc->devq);
213 if (softc->sim == NULL) {
214 printf("%s: error allocating SIM\n", __func__);
215 retval = ENOMEM;
216 goto bailout;
217 }
218
219 if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) {
220 printf("%s: error registering SIM\n", __func__);
221 retval = ENOMEM;
222 goto bailout;
223 }
224
225 if (xpt_create_path(&softc->path, /*periph*/NULL,
226 cam_sim_path(softc->sim),
227 CAM_TARGET_WILDCARD,
228 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
229 printf("%s: error creating path\n", __func__);
230 xpt_bus_deregister(cam_sim_path(softc->sim));
231 retval = EINVAL;
232 goto bailout;
233 }
234
235 xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE);
236 csa.ccb_h.func_code = XPT_SASYNC_CB;
237 csa.event_enable = AC_LOST_DEVICE;
238 csa.callback = cfcs_async;
239 csa.callback_arg = softc->sim;
240 xpt_action((union ccb *)&csa);
241
242 mtx_unlock(&softc->lock);
243
244 return (retval);
245
246 bailout:
247 if (softc->sim)
248 cam_sim_free(softc->sim, /*free_devq*/ TRUE);
249 else if (softc->devq)
250 cam_simq_free(softc->devq);
251 mtx_unlock(&softc->lock);
252 mtx_destroy(&softc->lock);
253
254 return (retval);
255 }
256
257 static void
cfcs_poll(struct cam_sim * sim)258 cfcs_poll(struct cam_sim *sim)
259 {
260
261 }
262
263 static void
cfcs_onoffline(void * arg,int online)264 cfcs_onoffline(void *arg, int online)
265 {
266 struct cfcs_softc *softc;
267 union ccb *ccb;
268
269 softc = (struct cfcs_softc *)arg;
270
271 mtx_lock(&softc->lock);
272 softc->online = online;
273
274 ccb = xpt_alloc_ccb_nowait();
275 if (ccb == NULL) {
276 printf("%s: unable to allocate CCB for rescan\n", __func__);
277 goto bailout;
278 }
279
280 if (xpt_create_path(&ccb->ccb_h.path, NULL,
281 cam_sim_path(softc->sim), CAM_TARGET_WILDCARD,
282 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
283 printf("%s: can't allocate path for rescan\n", __func__);
284 xpt_free_ccb(ccb);
285 goto bailout;
286 }
287 xpt_rescan(ccb);
288
289 bailout:
290 mtx_unlock(&softc->lock);
291 }
292
293 static void
cfcs_online(void * arg)294 cfcs_online(void *arg)
295 {
296 cfcs_onoffline(arg, /*online*/ 1);
297 }
298
299 static void
cfcs_offline(void * arg)300 cfcs_offline(void *arg)
301 {
302 cfcs_onoffline(arg, /*online*/ 0);
303 }
304
305 static int
cfcs_lun_enable(void * arg,struct ctl_id target_id,int lun_id)306 cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id)
307 {
308 return (0);
309 }
310 static int
cfcs_lun_disable(void * arg,struct ctl_id target_id,int lun_id)311 cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id)
312 {
313 return (0);
314 }
315
316 /*
317 * This function is very similar to ctl_ioctl_do_datamove(). Is there a
318 * way to combine the functionality?
319 *
320 * XXX KDM may need to move this into a thread. We're doing a bcopy in the
321 * caller's context, which will usually be the backend. That may not be a
322 * good thing.
323 */
324 static void
cfcs_datamove(union ctl_io * io)325 cfcs_datamove(union ctl_io *io)
326 {
327 union ccb *ccb;
328 bus_dma_segment_t cam_sg_entry, *cam_sglist;
329 struct ctl_sg_entry ctl_sg_entry, *ctl_sglist;
330 int cam_sg_count, ctl_sg_count, cam_sg_start;
331 int cam_sg_offset;
332 int len_to_copy, len_copied;
333 int ctl_watermark, cam_watermark;
334 int i, j;
335
336
337 cam_sg_offset = 0;
338 cam_sg_start = 0;
339
340 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
341
342 /*
343 * Note that we have a check in cfcs_action() to make sure that any
344 * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This
345 * is just to make sure no one removes that check without updating
346 * this code to provide the additional functionality necessary to
347 * support those modes of operation.
348 */
349 KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid "
350 "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS)));
351
352 /*
353 * Simplify things on both sides by putting single buffers into a
354 * single entry S/G list.
355 */
356 switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) {
357 case CAM_DATA_SG: {
358 int len_seen;
359
360 cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr;
361 cam_sg_count = ccb->csio.sglist_cnt;
362
363 for (i = 0, len_seen = 0; i < cam_sg_count; i++) {
364 if ((len_seen + cam_sglist[i].ds_len) >=
365 io->scsiio.kern_rel_offset) {
366 cam_sg_start = i;
367 cam_sg_offset = io->scsiio.kern_rel_offset -
368 len_seen;
369 break;
370 }
371 len_seen += cam_sglist[i].ds_len;
372 }
373 break;
374 }
375 case CAM_DATA_VADDR:
376 cam_sglist = &cam_sg_entry;
377 cam_sglist[0].ds_len = ccb->csio.dxfer_len;
378 cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr;
379 cam_sg_count = 1;
380 cam_sg_start = 0;
381 cam_sg_offset = io->scsiio.kern_rel_offset;
382 break;
383 default:
384 panic("Invalid CAM flags %#x", ccb->ccb_h.flags);
385 }
386
387 if (io->scsiio.kern_sg_entries > 0) {
388 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
389 ctl_sg_count = io->scsiio.kern_sg_entries;
390 } else {
391 ctl_sglist = &ctl_sg_entry;
392 ctl_sglist->addr = io->scsiio.kern_data_ptr;
393 ctl_sglist->len = io->scsiio.kern_data_len;
394 ctl_sg_count = 1;
395 }
396
397 ctl_watermark = 0;
398 cam_watermark = cam_sg_offset;
399 len_copied = 0;
400 for (i = cam_sg_start, j = 0;
401 i < cam_sg_count && j < ctl_sg_count;) {
402 uint8_t *cam_ptr, *ctl_ptr;
403
404 len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark,
405 ctl_sglist[j].len - ctl_watermark);
406
407 cam_ptr = (uint8_t *)cam_sglist[i].ds_addr;
408 cam_ptr = cam_ptr + cam_watermark;
409 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) {
410 /*
411 * XXX KDM fix this!
412 */
413 panic("need to implement bus address support");
414 #if 0
415 kern_ptr = bus_to_virt(kern_sglist[j].addr);
416 #endif
417 } else
418 ctl_ptr = (uint8_t *)ctl_sglist[j].addr;
419 ctl_ptr = ctl_ptr + ctl_watermark;
420
421 ctl_watermark += len_to_copy;
422 cam_watermark += len_to_copy;
423
424 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
425 CTL_FLAG_DATA_IN) {
426 CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n",
427 __func__, len_to_copy));
428 CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr,
429 __func__, cam_ptr));
430 bcopy(ctl_ptr, cam_ptr, len_to_copy);
431 } else {
432 CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n",
433 __func__, len_to_copy));
434 CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr,
435 __func__, ctl_ptr));
436 bcopy(cam_ptr, ctl_ptr, len_to_copy);
437 }
438
439 len_copied += len_to_copy;
440
441 if (cam_sglist[i].ds_len == cam_watermark) {
442 i++;
443 cam_watermark = 0;
444 }
445
446 if (ctl_sglist[j].len == ctl_watermark) {
447 j++;
448 ctl_watermark = 0;
449 }
450 }
451
452 io->scsiio.ext_data_filled += len_copied;
453
454 io->scsiio.be_move_done(io);
455 }
456
457 static void
cfcs_done(union ctl_io * io)458 cfcs_done(union ctl_io *io)
459 {
460 union ccb *ccb;
461
462 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
463 if (ccb == NULL) {
464 ctl_free_io(io);
465 return;
466 }
467
468 /*
469 * At this point we should have status. If we don't, that's a bug.
470 */
471 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE),
472 ("invalid CTL status %#x", io->io_hdr.status));
473
474 /*
475 * Translate CTL status to CAM status.
476 */
477 switch (io->io_hdr.status & CTL_STATUS_MASK) {
478 case CTL_SUCCESS:
479 ccb->ccb_h.status = CAM_REQ_CMP;
480 break;
481 case CTL_SCSI_ERROR:
482 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
483 ccb->csio.scsi_status = io->scsiio.scsi_status;
484 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data,
485 min(io->scsiio.sense_len, ccb->csio.sense_len));
486 if (ccb->csio.sense_len > io->scsiio.sense_len)
487 ccb->csio.sense_resid = ccb->csio.sense_len -
488 io->scsiio.sense_len;
489 else
490 ccb->csio.sense_resid = 0;
491 if ((ccb->csio.sense_len - ccb->csio.sense_resid) >
492 cfcs_max_sense) {
493 ccb->csio.sense_resid = ccb->csio.sense_len -
494 cfcs_max_sense;
495 }
496 break;
497 case CTL_CMD_ABORTED:
498 ccb->ccb_h.status = CAM_REQ_ABORTED;
499 break;
500 case CTL_ERROR:
501 default:
502 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
503 break;
504 }
505
506 xpt_done(ccb);
507 ctl_free_io(io);
508 }
509
510 void
cfcs_action(struct cam_sim * sim,union ccb * ccb)511 cfcs_action(struct cam_sim *sim, union ccb *ccb)
512 {
513 struct cfcs_softc *softc;
514 int err;
515
516 softc = (struct cfcs_softc *)cam_sim_softc(sim);
517 mtx_assert(&softc->lock, MA_OWNED);
518
519 switch (ccb->ccb_h.func_code) {
520 case XPT_SCSI_IO: {
521 union ctl_io *io;
522 struct ccb_scsiio *csio;
523
524 csio = &ccb->csio;
525
526 /*
527 * Catch CCB flags, like physical address flags, that
528 * indicate situations we currently can't handle.
529 */
530 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) {
531 ccb->ccb_h.status = CAM_REQ_INVALID;
532 printf("%s: bad CCB flags %#x (all flags %#x)\n",
533 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS,
534 ccb->ccb_h.flags);
535 xpt_done(ccb);
536 return;
537 }
538
539 /*
540 * If we aren't online, there are no devices to see.
541 */
542 if (softc->online == 0) {
543 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
544 xpt_done(ccb);
545 return;
546 }
547
548 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref);
549 if (io == NULL) {
550 printf("%s: can't allocate ctl_io\n", __func__);
551 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
552 xpt_freeze_devq(ccb->ccb_h.path, 1);
553 xpt_done(ccb);
554 return;
555 }
556 ctl_zero_io(io);
557 /* Save pointers on both sides */
558 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
559 ccb->ccb_h.io_ptr = io;
560
561 /*
562 * Only SCSI I/O comes down this path, resets, etc. come
563 * down via the XPT_RESET_BUS/LUN CCBs below.
564 */
565 io->io_hdr.io_type = CTL_IO_SCSI;
566 io->io_hdr.nexus.initid.id = 1;
567 io->io_hdr.nexus.targ_port = softc->port.targ_port;
568 /*
569 * XXX KDM how do we handle target IDs?
570 */
571 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
572 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun;
573 /*
574 * This tag scheme isn't the best, since we could in theory
575 * have a very long-lived I/O and tag collision, especially
576 * in a high I/O environment. But it should work well
577 * enough for now. Since we're using unsigned ints,
578 * they'll just wrap around.
579 */
580 io->scsiio.tag_num = softc->cur_tag_num++;
581 csio->tag_id = io->scsiio.tag_num;
582 switch (csio->tag_action) {
583 case CAM_TAG_ACTION_NONE:
584 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
585 break;
586 case MSG_SIMPLE_TASK:
587 io->scsiio.tag_type = CTL_TAG_SIMPLE;
588 break;
589 case MSG_HEAD_OF_QUEUE_TASK:
590 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
591 break;
592 case MSG_ORDERED_TASK:
593 io->scsiio.tag_type = CTL_TAG_ORDERED;
594 break;
595 case MSG_ACA_TASK:
596 io->scsiio.tag_type = CTL_TAG_ACA;
597 break;
598 default:
599 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
600 printf("%s: unhandled tag type %#x!!\n", __func__,
601 csio->tag_action);
602 break;
603 }
604 if (csio->cdb_len > sizeof(io->scsiio.cdb)) {
605 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
606 __func__, csio->cdb_len, sizeof(io->scsiio.cdb));
607 }
608 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb));
609 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb,
610 io->scsiio.cdb_len);
611
612 ccb->ccb_h.status |= CAM_SIM_QUEUED;
613 err = ctl_queue(io);
614 if (err != CTL_RETVAL_COMPLETE) {
615 printf("%s: func %d: error %d returned by "
616 "ctl_queue()!\n", __func__,
617 ccb->ccb_h.func_code, err);
618 ctl_free_io(io);
619 ccb->ccb_h.status = CAM_REQ_INVALID;
620 xpt_done(ccb);
621 return;
622 }
623 break;
624 }
625 case XPT_ABORT: {
626 union ctl_io *io;
627 union ccb *abort_ccb;
628
629 abort_ccb = ccb->cab.abort_ccb;
630
631 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) {
632 ccb->ccb_h.status = CAM_REQ_INVALID;
633 xpt_done(ccb);
634 }
635
636 /*
637 * If we aren't online, there are no devices to talk to.
638 */
639 if (softc->online == 0) {
640 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
641 xpt_done(ccb);
642 return;
643 }
644
645 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref);
646 if (io == NULL) {
647 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
648 xpt_freeze_devq(ccb->ccb_h.path, 1);
649 xpt_done(ccb);
650 return;
651 }
652
653 ctl_zero_io(io);
654 /* Save pointers on both sides */
655 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
656 ccb->ccb_h.io_ptr = io;
657
658 io->io_hdr.io_type = CTL_IO_TASK;
659 io->io_hdr.nexus.initid.id = 1;
660 io->io_hdr.nexus.targ_port = softc->port.targ_port;
661 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
662 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun;
663 io->taskio.task_action = CTL_TASK_ABORT_TASK;
664 io->taskio.tag_num = abort_ccb->csio.tag_id;
665 switch (abort_ccb->csio.tag_action) {
666 case CAM_TAG_ACTION_NONE:
667 io->taskio.tag_type = CTL_TAG_UNTAGGED;
668 break;
669 case MSG_SIMPLE_TASK:
670 io->taskio.tag_type = CTL_TAG_SIMPLE;
671 break;
672 case MSG_HEAD_OF_QUEUE_TASK:
673 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
674 break;
675 case MSG_ORDERED_TASK:
676 io->taskio.tag_type = CTL_TAG_ORDERED;
677 break;
678 case MSG_ACA_TASK:
679 io->taskio.tag_type = CTL_TAG_ACA;
680 break;
681 default:
682 io->taskio.tag_type = CTL_TAG_UNTAGGED;
683 printf("%s: unhandled tag type %#x!!\n", __func__,
684 abort_ccb->csio.tag_action);
685 break;
686 }
687 err = ctl_queue(io);
688 if (err != CTL_RETVAL_COMPLETE) {
689 printf("%s func %d: error %d returned by "
690 "ctl_queue()!\n", __func__,
691 ccb->ccb_h.func_code, err);
692 ctl_free_io(io);
693 }
694 break;
695 }
696 case XPT_GET_TRAN_SETTINGS: {
697 struct ccb_trans_settings *cts;
698 struct ccb_trans_settings_scsi *scsi;
699 struct ccb_trans_settings_fc *fc;
700
701 cts = &ccb->cts;
702 scsi = &cts->proto_specific.scsi;
703 fc = &cts->xport_specific.fc;
704
705
706 cts->protocol = PROTO_SCSI;
707 cts->protocol_version = SCSI_REV_SPC2;
708 cts->transport = XPORT_FC;
709 cts->transport_version = 0;
710
711 scsi->valid = CTS_SCSI_VALID_TQ;
712 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
713 fc->valid = CTS_FC_VALID_SPEED;
714 fc->bitrate = 800000;
715 fc->wwnn = softc->wwnn;
716 fc->wwpn = softc->wwpn;
717 fc->port = softc->port.targ_port;
718 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN |
719 CTS_FC_VALID_PORT;
720 ccb->ccb_h.status = CAM_REQ_CMP;
721 break;
722 }
723 case XPT_SET_TRAN_SETTINGS:
724 /* XXX KDM should we actually do something here? */
725 ccb->ccb_h.status = CAM_REQ_CMP;
726 break;
727 case XPT_RESET_BUS:
728 case XPT_RESET_DEV: {
729 union ctl_io *io;
730
731 /*
732 * If we aren't online, there are no devices to talk to.
733 */
734 if (softc->online == 0) {
735 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
736 xpt_done(ccb);
737 return;
738 }
739
740 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref);
741 if (io == NULL) {
742 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
743 xpt_freeze_devq(ccb->ccb_h.path, 1);
744 xpt_done(ccb);
745 return;
746 }
747
748 ctl_zero_io(io);
749 /* Save pointers on both sides */
750 if (ccb->ccb_h.func_code == XPT_RESET_DEV)
751 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
752 ccb->ccb_h.io_ptr = io;
753
754 io->io_hdr.io_type = CTL_IO_TASK;
755 io->io_hdr.nexus.initid.id = 0;
756 io->io_hdr.nexus.targ_port = softc->port.targ_port;
757 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
758 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun;
759 if (ccb->ccb_h.func_code == XPT_RESET_BUS)
760 io->taskio.task_action = CTL_TASK_BUS_RESET;
761 else
762 io->taskio.task_action = CTL_TASK_LUN_RESET;
763
764 err = ctl_queue(io);
765 if (err != CTL_RETVAL_COMPLETE) {
766 printf("%s func %d: error %d returned by "
767 "ctl_queue()!\n", __func__,
768 ccb->ccb_h.func_code, err);
769 ctl_free_io(io);
770 }
771 break;
772 }
773 case XPT_CALC_GEOMETRY:
774 cam_calc_geometry(&ccb->ccg, 1);
775 xpt_done(ccb);
776 break;
777 case XPT_PATH_INQ: {
778 struct ccb_pathinq *cpi;
779
780 cpi = &ccb->cpi;
781
782 cpi->version_num = 0;
783 cpi->hba_inquiry = PI_TAG_ABLE;
784 cpi->target_sprt = 0;
785 cpi->hba_misc = 0;
786 cpi->hba_eng_cnt = 0;
787 cpi->max_target = 1;
788 cpi->max_lun = 1024;
789 /* Do we really have a limit? */
790 cpi->maxio = 1024 * 1024;
791 cpi->async_flags = 0;
792 cpi->hpath_id = 0;
793 cpi->initiator_id = 0;
794
795 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
796 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN);
797 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
798 cpi->unit_number = 0;
799 cpi->bus_id = 0;
800 cpi->base_transfer_speed = 800000;
801 cpi->protocol = PROTO_SCSI;
802 cpi->protocol_version = SCSI_REV_SPC2;
803 /*
804 * Pretend to be Fibre Channel.
805 */
806 cpi->transport = XPORT_FC;
807 cpi->transport_version = 0;
808 cpi->xport_specific.fc.wwnn = softc->wwnn;
809 cpi->xport_specific.fc.wwpn = softc->wwpn;
810 cpi->xport_specific.fc.port = softc->port.targ_port;
811 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000;
812 cpi->ccb_h.status = CAM_REQ_CMP;
813 break;
814 }
815 default:
816 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
817 printf("%s: unsupported CCB type %#x\n", __func__,
818 ccb->ccb_h.func_code);
819 xpt_done(ccb);
820 break;
821 }
822 }
823
824 static void
cfcs_async(void * callback_arg,uint32_t code,struct cam_path * path,void * arg)825 cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
826 {
827
828 }
829