1/*-
2 * Copyright (c) 2008, 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/scsi_ctl.c#4 $
31 */
32/*
33 * Peripheral driver interface between CAM and CTL (CAM Target Layer).
34 *
35 * Author: Ken Merry <ken@FreeBSD.org>
36 */
37
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/sys/cam/ctl/scsi_ctl.c 249466 2013-04-14 09:28:14Z mav $");
40
41#include <sys/param.h>
42#include <sys/queue.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/lock.h>
46#include <sys/mutex.h>
47#include <sys/condvar.h>
48#include <sys/malloc.h>
49#include <sys/bus.h>
50#include <sys/endian.h>
51#include <sys/sbuf.h>
52#include <sys/sysctl.h>
53#include <sys/types.h>
54#include <sys/systm.h>
55#include <machine/bus.h>
56
57#include <cam/cam.h>
58#include <cam/cam_ccb.h>
59#include <cam/cam_periph.h>
60#include <cam/cam_queue.h>
61#include <cam/cam_xpt_periph.h>
62#include <cam/cam_debug.h>
63#include <cam/cam_sim.h>
64#include <cam/cam_xpt.h>
65
66#include <cam/scsi/scsi_all.h>
67#include <cam/scsi/scsi_message.h>
68
69#include <cam/ctl/ctl_io.h>
70#include <cam/ctl/ctl.h>
71#include <cam/ctl/ctl_frontend.h>
72#include <cam/ctl/ctl_util.h>
73#include <cam/ctl/ctl_error.h>
74
75typedef enum {
76 CTLFE_CCB_DEFAULT = 0x00,
77 CTLFE_CCB_WAITING = 0x01
78} ctlfe_ccb_types;
79
80struct ctlfe_softc {
81 struct ctl_frontend fe;
82 path_id_t path_id;
83 struct cam_sim *sim;
84 char port_name[DEV_IDLEN];
85 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list;
86 STAILQ_ENTRY(ctlfe_softc) links;
87};
88
89STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list;
90struct mtx ctlfe_list_mtx;
91static char ctlfe_mtx_desc[] = "ctlfelist";
92static int ctlfe_dma_enabled = 1;
93#ifdef CTLFE_INIT_ENABLE
94static int ctlfe_max_targets = 1;
95static int ctlfe_num_targets = 0;
96#endif
97
98typedef enum {
99 CTLFE_LUN_NONE = 0x00,
100 CTLFE_LUN_WILDCARD = 0x01
101} ctlfe_lun_flags;
102
103struct ctlfe_lun_softc {
104 struct ctlfe_softc *parent_softc;
105 struct cam_periph *periph;
106 ctlfe_lun_flags flags;
107 struct callout dma_callout;
108 uint64_t ccbs_alloced;
109 uint64_t ccbs_freed;
110 uint64_t ctios_sent;
111 uint64_t ctios_returned;
112 uint64_t atios_sent;
113 uint64_t atios_returned;
114 uint64_t inots_sent;
115 uint64_t inots_returned;
116 /* bus_dma_tag_t dma_tag; */
117 TAILQ_HEAD(, ccb_hdr) work_queue;
118 STAILQ_ENTRY(ctlfe_lun_softc) links;
119};
120
121typedef enum {
122 CTLFE_CMD_NONE = 0x00,
123 CTLFE_CMD_PIECEWISE = 0x01
124} ctlfe_cmd_flags;
125
126/*
127 * The size limit of this structure is CTL_PORT_PRIV_SIZE, from ctl_io.h.
128 * Currently that is 600 bytes.
129 */
130struct ctlfe_lun_cmd_info {
131 int cur_transfer_index;
132 ctlfe_cmd_flags flags;
133 /*
134 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16
135 * bytes on amd64. So with 32 elements, this is 256 bytes on
136 * i386 and 512 bytes on amd64.
137 */
138 bus_dma_segment_t cam_sglist[32];
139};
140
141/*
142 * When we register the adapter/bus, request that this many ctl_ios be
143 * allocated. This should be the maximum supported by the adapter, but we
144 * currently don't have a way to get that back from the path inquiry.
145 * XXX KDM add that to the path inquiry.
146 */
147#define CTLFE_REQ_CTL_IO 4096
148/*
149 * Number of Accept Target I/O CCBs to allocate and queue down to the
150 * adapter per LUN.
151 * XXX KDM should this be controlled by CTL?
152 */
153#define CTLFE_ATIO_PER_LUN 1024
154/*
155 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to
156 * allocate and queue down to the adapter per LUN.
157 * XXX KDM should this be controlled by CTL?
158 */
159#define CTLFE_IN_PER_LUN 1024
160
161/*
162 * Timeout (in seconds) on CTIO CCB allocation for doing a DMA or sending
163 * status to the initiator. The SIM is expected to have its own timeouts,
164 * so we're not putting this timeout around the CCB execution time. The
165 * SIM should timeout and let us know if it has an issue.
166 */
167#define CTLFE_DMA_TIMEOUT 60
168
169/*
170 * Turn this on to enable extra debugging prints.
171 */
172#if 0
173#define CTLFE_DEBUG
174#endif
175
176/*
177 * Use randomly assigned WWNN/WWPN values. This is to work around an issue
178 * in the FreeBSD initiator that makes it unable to rescan the target if
179 * the target gets rebooted and the WWNN/WWPN stay the same.
180 */
181#if 0
182#define RANDOM_WWNN
183#endif
184
185SYSCTL_INT(_kern_cam_ctl, OID_AUTO, dma_enabled, CTLFLAG_RW,
186 &ctlfe_dma_enabled, 0, "DMA enabled");
187MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface");
188
189#define ccb_type ppriv_field0
190/* This is only used in the ATIO */
191#define io_ptr ppriv_ptr1
192
193/* This is only used in the CTIO */
194#define ccb_atio ppriv_ptr1
195
196int ctlfeinitialize(void);
197void ctlfeshutdown(void);
198static periph_init_t ctlfeinit;
199static void ctlfeasync(void *callback_arg, uint32_t code,
200 struct cam_path *path, void *arg);
201static periph_ctor_t ctlferegister;
202static periph_oninv_t ctlfeoninvalidate;
203static periph_dtor_t ctlfecleanup;
204static periph_start_t ctlfestart;
205static void ctlfedone(struct cam_periph *periph,
206 union ccb *done_ccb);
207
208static void ctlfe_onoffline(void *arg, int online);
209static void ctlfe_online(void *arg);
210static void ctlfe_offline(void *arg);
211static int ctlfe_targ_enable(void *arg, struct ctl_id targ_id);
212static int ctlfe_targ_disable(void *arg, struct ctl_id targ_id);
213static int ctlfe_lun_enable(void *arg, struct ctl_id targ_id,
214 int lun_id);
215static int ctlfe_lun_disable(void *arg, struct ctl_id targ_id,
216 int lun_id);
217static void ctlfe_dump_sim(struct cam_sim *sim);
218static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc);
219static void ctlfe_dma_timeout(void *arg);
220static void ctlfe_datamove_done(union ctl_io *io);
221static void ctlfe_dump(void);
222
223static struct periph_driver ctlfe_driver =
224{
225 ctlfeinit, "ctl",
226 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0
227};
228
229static int ctlfe_module_event_handler(module_t, int /*modeventtype_t*/, void *);
230
231/*
232 * We're not using PERIPHDRIVER_DECLARE(), because it runs at SI_SUB_DRIVERS,
233 * and that happens before CTL gets initialised.
234 */
235static moduledata_t ctlfe_moduledata = {
236 "ctlfe",
237 ctlfe_module_event_handler,
238 NULL
239};
240
241DECLARE_MODULE(ctlfe, ctlfe_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH);
242MODULE_VERSION(ctlfe, 1);
243MODULE_DEPEND(ctlfe, ctl, 1, 1, 1);
244MODULE_DEPEND(ctlfe, cam, 1, 1, 1);
245
246extern struct ctl_softc *control_softc;
247
248void
249ctlfeshutdown(void)
250{
251 return;
252}
253
254void
255ctlfeinit(void)
256{
257 cam_status status;
258
259 STAILQ_INIT(&ctlfe_softc_list);
260
261 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF);
262
263 KASSERT(control_softc != NULL, ("CTL is not initialized!"));
264
265 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED |
266 AC_CONTRACT, ctlfeasync, NULL, NULL);
267
268 if (status != CAM_REQ_CMP) {
269 printf("ctl: Failed to attach async callback due to CAM "
270 "status 0x%x!\n", status);
271 }
272}
273
274static int
275ctlfe_module_event_handler(module_t mod, int what, void *arg)
276{
277
278 switch (what) {
279 case MOD_LOAD:
280 periphdriver_register(&ctlfe_driver);
281 return (0);
282 case MOD_UNLOAD:
283 return (EBUSY);
284 default:
285 return (EOPNOTSUPP);
286 }
287}
288
289static void
290ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
291{
292
293#ifdef CTLFEDEBUG
294 printf("%s: entered\n", __func__);
295#endif
296
297 /*
298 * When a new path gets registered, and it is capable of target
299 * mode, go ahead and attach. Later on, we may need to be more
300 * selective, but for now this will be sufficient.
301 */
302 switch (code) {
303 case AC_PATH_REGISTERED: {
304 struct ctl_frontend *fe;
305 struct ctlfe_softc *bus_softc;
306 struct ccb_pathinq *cpi;
307 int retval;
308
309 cpi = (struct ccb_pathinq *)arg;
310
311 /* Don't attach if it doesn't support target mode */
312 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) {
313#ifdef CTLFEDEBUG
314 printf("%s: SIM %s%d doesn't support target mode\n",
315 __func__, cpi->dev_name, cpi->unit_number);
316#endif
317 break;
318 }
319
320#ifdef CTLFE_INIT_ENABLE
321 if (ctlfe_num_targets >= ctlfe_max_targets) {
322 union ccb *ccb;
323 struct cam_sim *sim;
324
325 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP,
326 M_NOWAIT | M_ZERO);
327 if (ccb == NULL) {
328 printf("%s: unable to malloc CCB!\n", __func__);
329 return;
330 }
331 xpt_setup_ccb(&ccb->ccb_h, cpi->ccb_h.path,
332 CAM_PRIORITY_NONE);
333
334 sim = xpt_path_sim(cpi->ccb_h.path);
335
336 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
337 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
338 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR;
339
340 /* We should hold the SIM lock here */
341 mtx_assert(sim->mtx, MA_OWNED);
342
343 xpt_action(ccb);
344
345 if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
346 CAM_REQ_CMP) {
347 printf("%s: SIM %s%d (path id %d) initiator "
348 "enable failed with status %#x\n",
349 __func__, cpi->dev_name,
350 cpi->unit_number, cpi->ccb_h.path_id,
351 ccb->ccb_h.status);
352 } else {
353 printf("%s: SIM %s%d (path id %d) initiator "
354 "enable succeeded\n",
355 __func__, cpi->dev_name,
356 cpi->unit_number, cpi->ccb_h.path_id);
357 }
358
359 free(ccb, M_TEMP);
360
361 break;
362 } else {
363 ctlfe_num_targets++;
364 }
365
366 printf("%s: ctlfe_num_targets = %d\n", __func__,
367 ctlfe_num_targets);
368#endif /* CTLFE_INIT_ENABLE */
369
370 /*
371 * We're in an interrupt context here, so we have to
372 * use M_NOWAIT. Of course this means trouble if we
373 * can't allocate memory.
374 */
375 bus_softc = malloc(sizeof(*bus_softc), M_CTLFE,
376 M_NOWAIT | M_ZERO);
377 if (bus_softc == NULL) {
378 printf("%s: unable to malloc %zd bytes for softc\n",
379 __func__, sizeof(*bus_softc));
380 return;
381 }
382
383 bus_softc->path_id = cpi->ccb_h.path_id;
384 bus_softc->sim = xpt_path_sim(cpi->ccb_h.path);
385 STAILQ_INIT(&bus_softc->lun_softc_list);
386
387 fe = &bus_softc->fe;
388
389 /*
390 * XXX KDM should we be more accurate here ?
391 */
392 if (cpi->transport == XPORT_FC)
393 fe->port_type = CTL_PORT_FC;
394 else
395 fe->port_type = CTL_PORT_SCSI;
396
397 /* XXX KDM what should the real number be here? */
398 fe->num_requested_ctl_io = 4096;
399 snprintf(bus_softc->port_name, sizeof(bus_softc->port_name),
400 "%s%d", cpi->dev_name, cpi->unit_number);
401 /*
402 * XXX KDM it would be nice to allocate storage in the
403 * frontend structure itself.
404 */
405 fe->port_name = bus_softc->port_name;
406 fe->physical_port = cpi->unit_number;
407 fe->virtual_port = cpi->bus_id;
408 fe->port_online = ctlfe_online;
409 fe->port_offline = ctlfe_offline;
410 fe->onoff_arg = bus_softc;
411 fe->targ_enable = ctlfe_targ_enable;
412 fe->targ_disable = ctlfe_targ_disable;
413 fe->lun_enable = ctlfe_lun_enable;
414 fe->lun_disable = ctlfe_lun_disable;
415 fe->targ_lun_arg = bus_softc;
416 fe->fe_datamove = ctlfe_datamove_done;
417 fe->fe_done = ctlfe_datamove_done;
418 fe->fe_dump = ctlfe_dump;
419 /*
420 * XXX KDM the path inquiry doesn't give us the maximum
421 * number of targets supported.
422 */
423 fe->max_targets = cpi->max_target;
424 fe->max_target_id = cpi->max_target;
425
426 /*
427 * XXX KDM need to figure out whether we're the master or
428 * slave.
429 */
430#ifdef CTLFEDEBUG
431 printf("%s: calling ctl_frontend_register() for %s%d\n",
432 __func__, cpi->dev_name, cpi->unit_number);
433#endif
434 retval = ctl_frontend_register(fe, /*master_SC*/ 1);
435 if (retval != 0) {
436 printf("%s: ctl_frontend_register() failed with "
437 "error %d!\n", __func__, retval);
438 free(bus_softc, M_CTLFE);
439 break;
440 } else {
441 mtx_lock(&ctlfe_list_mtx);
442 STAILQ_INSERT_TAIL(&ctlfe_softc_list, bus_softc, links);
443 mtx_unlock(&ctlfe_list_mtx);
444 }
445
446 break;
447 }
448 case AC_PATH_DEREGISTERED: {
449 struct ctlfe_softc *softc = NULL;
450
451 mtx_lock(&ctlfe_list_mtx);
452 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
453 if (softc->path_id == xpt_path_path_id(path)) {
454 STAILQ_REMOVE(&ctlfe_softc_list, softc,
455 ctlfe_softc, links);
456 break;
457 }
458 }
459 mtx_unlock(&ctlfe_list_mtx);
460
461 if (softc != NULL) {
462 /*
463 * XXX KDM are we certain at this point that there
464 * are no outstanding commands for this frontend?
465 */
466 ctl_frontend_deregister(&softc->fe);
467 free(softc, M_CTLFE);
468 }
469 break;
470 }
471 case AC_CONTRACT: {
472 struct ac_contract *ac;
473
474 ac = (struct ac_contract *)arg;
475
476 switch (ac->contract_number) {
477 case AC_CONTRACT_DEV_CHG: {
478 struct ac_device_changed *dev_chg;
479 struct ctlfe_softc *softc;
480 int retval, found;
481
482 dev_chg = (struct ac_device_changed *)ac->contract_data;
483
484 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n",
485 __func__, dev_chg->wwpn, dev_chg->port,
486 xpt_path_path_id(path), dev_chg->target,
487 (dev_chg->arrived == 0) ? "left" : "arrived");
488
489 found = 0;
490
491 mtx_lock(&ctlfe_list_mtx);
492 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
493 if (softc->path_id == xpt_path_path_id(path)) {
494 found = 1;
495 break;
496 }
497 }
498 mtx_unlock(&ctlfe_list_mtx);
499
500 if (found == 0) {
501 printf("%s: CTL port for CAM path %u not "
502 "found!\n", __func__,
503 xpt_path_path_id(path));
504 break;
505 }
506 if (dev_chg->arrived != 0) {
507 retval = ctl_add_initiator(dev_chg->wwpn,
508 softc->fe.targ_port, dev_chg->target);
509 } else {
510 retval = ctl_remove_initiator(
511 softc->fe.targ_port, dev_chg->target);
512 }
513
514 if (retval != 0) {
515 printf("%s: could not %s port %d iid %u "
516 "WWPN %#jx!\n", __func__,
517 (dev_chg->arrived != 0) ? "add" :
518 "remove", softc->fe.targ_port,
519 dev_chg->target,
520 (uintmax_t)dev_chg->wwpn);
521 }
522 break;
523 }
524 default:
525 printf("%s: unsupported contract number %ju\n",
526 __func__, (uintmax_t)ac->contract_number);
527 break;
528 }
529 break;
530 }
531 default:
532 break;
533 }
534}
535
536static cam_status
537ctlferegister(struct cam_periph *periph, void *arg)
538{
539 struct ctlfe_softc *bus_softc;
540 struct ctlfe_lun_softc *softc;
541 struct cam_sim *sim;
542 union ccb en_lun_ccb;
543 cam_status status;
544 int i;
545
546 softc = (struct ctlfe_lun_softc *)arg;
547 bus_softc = softc->parent_softc;
548 sim = xpt_path_sim(periph->path);
549
550 TAILQ_INIT(&softc->work_queue);
551 softc->periph = periph;
552
553 callout_init_mtx(&softc->dma_callout, sim->mtx, /*flags*/ 0);
554 periph->softc = softc;
555
556 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
557 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
558 en_lun_ccb.cel.grp6_len = 0;
559 en_lun_ccb.cel.grp7_len = 0;
560 en_lun_ccb.cel.enable = 1;
561 xpt_action(&en_lun_ccb);
562 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
563 if (status != CAM_REQ_CMP) {
564 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n",
565 __func__, en_lun_ccb.ccb_h.status);
566 return (status);
567 }
568
569 status = CAM_REQ_CMP;
570
571 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) {
572 union ccb *new_ccb;
573
574 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
575 M_ZERO|M_NOWAIT);
576 if (new_ccb == NULL) {
577 status = CAM_RESRC_UNAVAIL;
578 break;
579 }
580 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
581 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
582 new_ccb->ccb_h.cbfcnp = ctlfedone;
583 xpt_action(new_ccb);
584 softc->atios_sent++;
585 status = new_ccb->ccb_h.status;
586 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
587 free(new_ccb, M_CTLFE);
588 break;
589 }
590 }
591
592 status = cam_periph_acquire(periph);
593 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
594 xpt_print(periph->path, "%s: could not acquire reference "
595 "count, status = %#x\n", __func__, status);
596 return (status);
597 }
598
599 if (i == 0) {
600 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, "
601 "status 0x%x\n", __func__, status);
602 return (CAM_REQ_CMP_ERR);
603 }
604
605 for (i = 0; i < CTLFE_IN_PER_LUN; i++) {
606 union ccb *new_ccb;
607
608 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
609 M_ZERO|M_NOWAIT);
610 if (new_ccb == NULL) {
611 status = CAM_RESRC_UNAVAIL;
612 break;
613 }
614
615 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
616 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
617 new_ccb->ccb_h.cbfcnp = ctlfedone;
618 xpt_action(new_ccb);
619 softc->inots_sent++;
620 status = new_ccb->ccb_h.status;
621 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
622 /*
623 * Note that we don't free the CCB here. If the
624 * status is not CAM_REQ_INPROG, then we're
625 * probably talking to a SIM that says it is
626 * target-capable but doesn't support the
627 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the
628 * older API. In that case, it'll call xpt_done()
629 * on the CCB, and we need to free it in our done
630 * routine as a result.
631 */
632 break;
633 }
634 }
635 if ((i == 0)
636 || (status != CAM_REQ_INPROG)) {
637 xpt_print(periph->path, "%s: could not allocate immediate "
638 "notify CCBs, status 0x%x\n", __func__, status);
639 return (CAM_REQ_CMP_ERR);
640 }
641 return (CAM_REQ_CMP);
642}
643
644static void
645ctlfeoninvalidate(struct cam_periph *periph)
646{
647 union ccb en_lun_ccb;
648 cam_status status;
649 struct ctlfe_lun_softc *softc;
650
651 softc = (struct ctlfe_lun_softc *)periph->softc;
652
653 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
654 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
655 en_lun_ccb.cel.grp6_len = 0;
656 en_lun_ccb.cel.grp7_len = 0;
657 en_lun_ccb.cel.enable = 0;
658 xpt_action(&en_lun_ccb);
659 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
660 if (status != CAM_REQ_CMP) {
661 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n",
662 __func__, en_lun_ccb.ccb_h.status);
663 /*
664 * XXX KDM what do we do now?
665 */
666 }
667 xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju "
668 "INOTs outstanding, %d refs\n", softc->atios_sent -
669 softc->atios_returned, softc->inots_sent -
670 softc->inots_returned, periph->refcount);
671}
672
673static void
674ctlfecleanup(struct cam_periph *periph)
675{
676 struct ctlfe_lun_softc *softc;
677 struct ctlfe_softc *bus_softc;
678
679 xpt_print(periph->path, "%s: Called\n", __func__);
680
681 softc = (struct ctlfe_lun_softc *)periph->softc;
682 bus_softc = softc->parent_softc;
683
684 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links);
685
686 /*
687 * XXX KDM is there anything else that needs to be done here?
688 */
689
690 callout_stop(&softc->dma_callout);
691
692 free(softc, M_CTLFE);
693}
694
695static void
696ctlfestart(struct cam_periph *periph, union ccb *start_ccb)
697{
698 struct ctlfe_lun_softc *softc;
699 struct ccb_hdr *ccb_h;
700
701 softc = (struct ctlfe_lun_softc *)periph->softc;
702
703 softc->ccbs_alloced++;
704
705 start_ccb->ccb_h.ccb_type = CTLFE_CCB_DEFAULT;
706
707 ccb_h = TAILQ_FIRST(&softc->work_queue);
708 if (periph->immediate_priority <= periph->pinfo.priority) {
709 panic("shouldn't get to the CCB waiting case!");
710 start_ccb->ccb_h.ccb_type = CTLFE_CCB_WAITING;
711 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
712 periph_links.sle);
713 periph->immediate_priority = CAM_PRIORITY_NONE;
714 wakeup(&periph->ccb_list);
715 } else if (ccb_h == NULL) {
716 softc->ccbs_freed++;
717 xpt_release_ccb(start_ccb);
718 } else {
719 struct ccb_accept_tio *atio;
720 struct ccb_scsiio *csio;
721 uint8_t *data_ptr;
722 uint32_t dxfer_len;
723 ccb_flags flags;
724 union ctl_io *io;
725 uint8_t scsi_status;
726
727 /* Take the ATIO off the work queue */
728 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe);
729 atio = (struct ccb_accept_tio *)ccb_h;
730 io = (union ctl_io *)ccb_h->io_ptr;
731 csio = &start_ccb->csio;
732
733 flags = atio->ccb_h.flags &
734 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK);
735
736 if ((io == NULL)
737 || (io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) {
738 /*
739 * We're done, send status back.
740 */
741 flags |= CAM_SEND_STATUS;
742 if (io == NULL) {
743 scsi_status = SCSI_STATUS_BUSY;
744 csio->sense_len = 0;
745 } else if ((io->io_hdr.status & CTL_STATUS_MASK) ==
746 CTL_CMD_ABORTED) {
747 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
748
749 /*
750 * If this command was aborted, we don't
751 * need to send status back to the SIM.
752 * Just free the CTIO and ctl_io, and
753 * recycle the ATIO back to the SIM.
754 */
755 xpt_print(periph->path, "%s: aborted "
756 "command 0x%04x discarded\n",
757 __func__, io->scsiio.tag_num);
758 ctl_free_io(io);
759 /*
760 * For a wildcard attachment, commands can
761 * come in with a specific target/lun. Reset
762 * the target and LUN fields back to the
763 * wildcard values before we send them back
764 * down to the SIM. The SIM has a wildcard
765 * LUN enabled, not whatever target/lun
766 * these happened to be.
767 */
768 if (softc->flags & CTLFE_LUN_WILDCARD) {
769 atio->ccb_h.target_id =
770 CAM_TARGET_WILDCARD;
771 atio->ccb_h.target_lun =
772 CAM_LUN_WILDCARD;
773 }
774
775 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
776 cam_release_devq(periph->path,
777 /*relsim_flags*/0,
778 /*reduction*/0,
779 /*timeout*/0,
780 /*getcount_only*/0);
781 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
782 }
783
784 ccb_h = TAILQ_FIRST(&softc->work_queue);
785
786 if (atio->ccb_h.func_code !=
787 XPT_ACCEPT_TARGET_IO) {
788 xpt_print(periph->path, "%s: func_code "
789 "is %#x\n", __func__,
790 atio->ccb_h.func_code);
791 }
792 start_ccb->ccb_h.func_code = XPT_ABORT;
793 start_ccb->cab.abort_ccb = (union ccb *)atio;
794 start_ccb->ccb_h.cbfcnp = ctlfedone;
795
796 /* Tell the SIM that we've aborted this ATIO */
797 xpt_action(start_ccb);
798 softc->ccbs_freed++;
799 xpt_release_ccb(start_ccb);
800
801 /*
802 * Send the ATIO back down to the SIM.
803 */
804 xpt_action((union ccb *)atio);
805 softc->atios_sent++;
806
807 /*
808 * If we still have work to do, ask for
809 * another CCB. Otherwise, deactivate our
810 * callout.
811 */
812 if (ccb_h != NULL)
813 xpt_schedule(periph, /*priority*/ 1);
814 else
815 callout_stop(&softc->dma_callout);
816
817 return;
818 } else {
819 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
820 scsi_status = io->scsiio.scsi_status;
821 csio->sense_len = io->scsiio.sense_len;
822 }
823 data_ptr = NULL;
824 dxfer_len = 0;
825 if (io == NULL) {
826 printf("%s: tag %04x io is NULL\n", __func__,
827 atio->tag_id);
828 } else {
829#ifdef CTLFEDEBUG
830 printf("%s: tag %04x status %x\n", __func__,
831 atio->tag_id, io->io_hdr.status);
832#endif
833 }
834 csio->sglist_cnt = 0;
835 if (csio->sense_len != 0) {
836 csio->sense_data = io->scsiio.sense_data;
837 flags |= CAM_SEND_SENSE;
838 } else if (scsi_status == SCSI_STATUS_CHECK_COND) {
839 xpt_print(periph->path, "%s: check condition "
840 "with no sense\n", __func__);
841 }
842 } else {
843 struct ctlfe_lun_cmd_info *cmd_info;
844
845 /*
846 * Datamove call, we need to setup the S/G list.
847 */
848
849 cmd_info = (struct ctlfe_lun_cmd_info *)
850 io->io_hdr.port_priv;
851
852 KASSERT(sizeof(*cmd_info) < CTL_PORT_PRIV_SIZE,
853 ("%s: sizeof(struct ctlfe_lun_cmd_info) %zd < "
854 "CTL_PORT_PRIV_SIZE %d", __func__,
855 sizeof(*cmd_info), CTL_PORT_PRIV_SIZE));
856 io->io_hdr.flags &= ~CTL_FLAG_DMA_QUEUED;
857
858 /*
859 * Need to zero this, in case it has been used for
860 * a previous datamove for this particular I/O.
861 */
862 bzero(cmd_info, sizeof(*cmd_info));
863 scsi_status = 0;
864
865 /*
866 * Set the direction, relative to the initiator.
867 */
868 flags &= ~CAM_DIR_MASK;
869 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
870 CTL_FLAG_DATA_IN)
871 flags |= CAM_DIR_IN;
872 else
873 flags |= CAM_DIR_OUT;
874
875 csio->cdb_len = atio->cdb_len;
876
877 flags &= ~CAM_DATA_MASK;
878 if (io->scsiio.kern_sg_entries == 0) {
879 /* No S/G list */
880 data_ptr = io->scsiio.kern_data_ptr;
881 dxfer_len = io->scsiio.kern_data_len;
882 csio->sglist_cnt = 0;
883
884 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
885 flags |= CAM_DATA_PADDR;
886 else
887 flags |= CAM_DATA_VADDR;
888 } else if (io->scsiio.kern_sg_entries <=
889 (sizeof(cmd_info->cam_sglist)/
890 sizeof(cmd_info->cam_sglist[0]))) {
891 /*
892 * S/G list with physical or virtual pointers.
893 * Just populate the CAM S/G list with the
894 * pointers.
895 */
896 int i;
897 struct ctl_sg_entry *ctl_sglist;
898 bus_dma_segment_t *cam_sglist;
899
900 ctl_sglist = (struct ctl_sg_entry *)
901 io->scsiio.kern_data_ptr;
902 cam_sglist = cmd_info->cam_sglist;
903
904 for (i = 0; i < io->scsiio.kern_sg_entries;i++){
905 cam_sglist[i].ds_addr =
906 (bus_addr_t)ctl_sglist[i].addr;
907 cam_sglist[i].ds_len =
908 ctl_sglist[i].len;
909 }
910 csio->sglist_cnt = io->scsiio.kern_sg_entries;
911 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
912 flags |= CAM_DATA_SG_PADDR;
913 else
914 flags |= CAM_DATA_SG;
915 data_ptr = (uint8_t *)cam_sglist;
916 dxfer_len = io->scsiio.kern_data_len;
917 } else {
918 /* S/G list with virtual pointers */
919 struct ctl_sg_entry *sglist;
920 int *ti;
921
922 /*
923 * If we have more S/G list pointers than
924 * will fit in the available storage in the
925 * cmd_info structure inside the ctl_io header,
926 * then we need to send down the pointers
927 * one element at a time.
928 */
929
930 sglist = (struct ctl_sg_entry *)
931 io->scsiio.kern_data_ptr;
932 ti = &cmd_info->cur_transfer_index;
933 data_ptr = sglist[*ti].addr;
934 dxfer_len = sglist[*ti].len;
935 csio->sglist_cnt = 0;
936 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
937 flags |= CAM_DATA_PADDR;
938 else
939 flags |= CAM_DATA_VADDR;
940 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
941 (*ti)++;
942 }
943
944 io->scsiio.ext_data_filled += dxfer_len;
945
946 if (io->scsiio.ext_data_filled >
947 io->scsiio.kern_total_len) {
948 xpt_print(periph->path, "%s: tag 0x%04x "
949 "fill len %u > total %u\n",
950 __func__, io->scsiio.tag_num,
951 io->scsiio.ext_data_filled,
952 io->scsiio.kern_total_len);
953 }
954 }
955
956#ifdef CTLFEDEBUG
957 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__,
958 (flags & CAM_SEND_STATUS) ? "done" : "datamove",
959 atio->tag_id, flags, data_ptr, dxfer_len);
960#endif
961
962 /*
963 * Valid combinations:
964 * - CAM_SEND_STATUS, SCATTER_VALID = 0, dxfer_len = 0,
965 * sglist_cnt = 0
966 * - CAM_SEND_STATUS = 0, SCATTER_VALID = 0, dxfer_len != 0,
967 * sglist_cnt = 0
968 * - CAM_SEND_STATUS = 0, SCATTER_VALID, dxfer_len != 0,
969 * sglist_cnt != 0
970 */
971#ifdef CTLFEDEBUG
972 if (((flags & CAM_SEND_STATUS)
973 && (((flags & CAM_SCATTER_VALID) != 0)
974 || (dxfer_len != 0)
975 || (csio->sglist_cnt != 0)))
976 || (((flags & CAM_SEND_STATUS) == 0)
977 && (dxfer_len == 0))
978 || ((flags & CAM_SCATTER_VALID)
979 && (csio->sglist_cnt == 0))
980 || (((flags & CAM_SCATTER_VALID) == 0)
981 && (csio->sglist_cnt != 0))) {
982 printf("%s: tag %04x cdb %02x flags %#x dxfer_len "
983 "%d sg %u\n", __func__, atio->tag_id,
984 atio->cdb_io.cdb_bytes[0], flags, dxfer_len,
985 csio->sglist_cnt);
986 if (io != NULL) {
987 printf("%s: tag %04x io status %#x\n", __func__,
988 atio->tag_id, io->io_hdr.status);
989 } else {
990 printf("%s: tag %04x no associated io\n",
991 __func__, atio->tag_id);
992 }
993 }
994#endif
995 cam_fill_ctio(csio,
996 /*retries*/ 2,
997 ctlfedone,
998 flags,
999 (flags & CAM_TAG_ACTION_VALID) ?
1000 MSG_SIMPLE_Q_TAG : 0,
1001 atio->tag_id,
1002 atio->init_id,
1003 scsi_status,
1004 /*data_ptr*/ data_ptr,
1005 /*dxfer_len*/ dxfer_len,
1006 /*timeout*/ 5 * 1000);
1007 start_ccb->ccb_h.ccb_atio = atio;
1008 if (((flags & CAM_SEND_STATUS) == 0)
1009 && (io != NULL))
1010 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1011
1012 softc->ctios_sent++;
1013
1014 xpt_action(start_ccb);
1015
1016 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1017 cam_release_devq(periph->path,
1018 /*relsim_flags*/0,
1019 /*reduction*/0,
1020 /*timeout*/0,
1021 /*getcount_only*/0);
1022 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
1023 }
1024
1025 ccb_h = TAILQ_FIRST(&softc->work_queue);
1026 }
1027 /*
1028 * If we still have work to do, ask for another CCB. Otherwise,
1029 * deactivate our callout.
1030 */
1031 if (ccb_h != NULL)
1032 xpt_schedule(periph, /*priority*/ 1);
1033 else
1034 callout_stop(&softc->dma_callout);
1035}
1036
1037static void
1038ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb)
1039{
1040 struct ctlfe_lun_softc *softc;
1041
1042 softc = (struct ctlfe_lun_softc *)periph->softc;
1043
1044 switch (ccb->ccb_h.func_code) {
1045 case XPT_ACCEPT_TARGET_IO:
1046 softc->atios_returned++;
1047 break;
1048 case XPT_IMMEDIATE_NOTIFY:
1049 case XPT_NOTIFY_ACKNOWLEDGE:
1050 softc->inots_returned++;
1051 break;
1052 default:
1053 break;
1054 }
1055
1056 free(ccb, M_CTLFE);
1057
1058 KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: "
1059 "atios_returned %ju > atios_sent %ju", __func__,
1060 softc->atios_returned, softc->atios_sent));
1061 KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: "
1062 "inots_returned %ju > inots_sent %ju", __func__,
1063 softc->inots_returned, softc->inots_sent));
1064
1065 /*
1066 * If we have received all of our CCBs, we can release our
1067 * reference on the peripheral driver. It will probably go away
1068 * now.
1069 */
1070 if ((softc->atios_returned == softc->atios_sent)
1071 && (softc->inots_returned == softc->inots_sent)) {
1072 cam_periph_release_locked(periph);
1073 }
1074}
1075
1076static int
1077ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset)
1078{
1079 uint64_t lba;
1080 uint32_t num_blocks, nbc;
1081 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)?
1082 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes;
1083
1084 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */
1085
1086 switch (cmdbyt[0]) {
1087 case READ_6:
1088 case WRITE_6:
1089 {
1090 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt;
1091 lba = scsi_3btoul(cdb->addr);
1092 lba &= 0x1fffff;
1093 num_blocks = cdb->length;
1094 if (num_blocks == 0)
1095 num_blocks = 256;
1096 lba += nbc;
1097 num_blocks -= nbc;
1098 scsi_ulto3b(lba, cdb->addr);
1099 cdb->length = num_blocks;
1100 break;
1101 }
1102 case READ_10:
1103 case WRITE_10:
1104 {
1105 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt;
1106 lba = scsi_4btoul(cdb->addr);
1107 num_blocks = scsi_2btoul(cdb->length);
1108 lba += nbc;
1109 num_blocks -= nbc;
1110 scsi_ulto4b(lba, cdb->addr);
1111 scsi_ulto2b(num_blocks, cdb->length);
1112 break;
1113 }
1114 case READ_12:
1115 case WRITE_12:
1116 {
1117 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt;
1118 lba = scsi_4btoul(cdb->addr);
1119 num_blocks = scsi_4btoul(cdb->length);
1120 lba += nbc;
1121 num_blocks -= nbc;
1122 scsi_ulto4b(lba, cdb->addr);
1123 scsi_ulto4b(num_blocks, cdb->length);
1124 break;
1125 }
1126 case READ_16:
1127 case WRITE_16:
1128 {
1129 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt;
1130 lba = scsi_8btou64(cdb->addr);
1131 num_blocks = scsi_4btoul(cdb->length);
1132 lba += nbc;
1133 num_blocks -= nbc;
1134 scsi_u64to8b(lba, cdb->addr);
1135 scsi_ulto4b(num_blocks, cdb->length);
1136 break;
1137 }
1138 default:
1139 return -1;
1140 }
1141 return (0);
1142}
1143
1144static void
1145ctlfedone(struct cam_periph *periph, union ccb *done_ccb)
1146{
1147 struct ctlfe_lun_softc *softc;
1148 struct ctlfe_softc *bus_softc;
1149 struct ccb_accept_tio *atio = NULL;
1150 union ctl_io *io = NULL;
1151
1152#ifdef CTLFE_DEBUG
1153 printf("%s: entered, func_code = %#x, type = %#lx\n", __func__,
1154 done_ccb->ccb_h.func_code, done_ccb->ccb_h.ccb_type);
1155#endif
1156
1157 softc = (struct ctlfe_lun_softc *)periph->softc;
1158 bus_softc = softc->parent_softc;
1159
1160 if (done_ccb->ccb_h.ccb_type == CTLFE_CCB_WAITING) {
1161 panic("shouldn't get to the CCB waiting case!");
1162 wakeup(&done_ccb->ccb_h.cbfcnp);
1163 return;
1164 }
1165
1166 /*
1167 * If the peripheral is invalid, ATIOs and immediate notify CCBs
1168 * need to be freed. Most of the ATIOs and INOTs that come back
1169 * will be CCBs that are being returned from the SIM as a result of
1170 * our disabling the LUN.
1171 *
1172 * Other CCB types are handled in their respective cases below.
1173 */
1174 if (periph->flags & CAM_PERIPH_INVALID) {
1175 switch (done_ccb->ccb_h.func_code) {
1176 case XPT_ACCEPT_TARGET_IO:
1177 case XPT_IMMEDIATE_NOTIFY:
1178 case XPT_NOTIFY_ACKNOWLEDGE:
1179 ctlfe_free_ccb(periph, done_ccb);
1180 return;
1181 default:
1182 break;
1183 }
1184
1185 }
1186 switch (done_ccb->ccb_h.func_code) {
1187 case XPT_ACCEPT_TARGET_IO: {
1188
1189 atio = &done_ccb->atio;
1190
1191 softc->atios_returned++;
1192
1193 resubmit:
1194 /*
1195 * Allocate a ctl_io, pass it to CTL, and wait for the
1196 * datamove or done.
1197 */
1198 io = ctl_alloc_io(bus_softc->fe.ctl_pool_ref);
1199 if (io == NULL) {
1200 atio->ccb_h.flags &= ~CAM_DIR_MASK;
1201 atio->ccb_h.flags |= CAM_DIR_NONE;
1202
1203 printf("%s: ctl_alloc_io failed!\n", __func__);
1204
1205 /*
1206 * XXX KDM need to set SCSI_STATUS_BUSY, but there
1207 * is no field in the ATIO structure to do that,
1208 * and we aren't able to allocate a ctl_io here.
1209 * What to do?
1210 */
1211 atio->sense_len = 0;
1212 done_ccb->ccb_h.io_ptr = NULL;
1213 TAILQ_INSERT_TAIL(&softc->work_queue, &atio->ccb_h,
1214 periph_links.tqe);
1215 xpt_schedule(periph, /*priority*/ 1);
1216 break;
1217 }
1218 ctl_zero_io(io);
1219
1220 /* Save pointers on both sides */
1221 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb;
1222 done_ccb->ccb_h.io_ptr = io;
1223
1224 /*
1225 * Only SCSI I/O comes down this path, resets, etc. come
1226 * down the immediate notify path below.
1227 */
1228 io->io_hdr.io_type = CTL_IO_SCSI;
1229 io->io_hdr.nexus.initid.id = atio->init_id;
1230 io->io_hdr.nexus.targ_port = bus_softc->fe.targ_port;
1231 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id;
1232 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun;
1233 io->scsiio.tag_num = atio->tag_id;
1234 switch (atio->tag_action) {
1235 case CAM_TAG_ACTION_NONE:
1236 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1237 break;
1238 case MSG_SIMPLE_TASK:
1239 io->scsiio.tag_type = CTL_TAG_SIMPLE;
1240 break;
1241 case MSG_HEAD_OF_QUEUE_TASK:
1242 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
1243 break;
1244 case MSG_ORDERED_TASK:
1245 io->scsiio.tag_type = CTL_TAG_ORDERED;
1246 break;
1247 case MSG_ACA_TASK:
1248 io->scsiio.tag_type = CTL_TAG_ACA;
1249 break;
1250 default:
1251 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1252 printf("%s: unhandled tag type %#x!!\n", __func__,
1253 atio->tag_action);
1254 break;
1255 }
1256 if (atio->cdb_len > sizeof(io->scsiio.cdb)) {
1257 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
1258 __func__, atio->cdb_len, sizeof(io->scsiio.cdb));
1259 }
1260 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb));
1261 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb,
1262 io->scsiio.cdb_len);
1263
1264#ifdef CTLFEDEBUG
1265 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__,
1266 (uintmax_t)io->io_hdr.nexus.initid.id,
1267 io->io_hdr.nexus.targ_port,
1268 (uintmax_t)io->io_hdr.nexus.targ_target.id,
1269 io->io_hdr.nexus.targ_lun,
1270 io->scsiio.tag_num, io->scsiio.cdb[0]);
1271#endif
1272
1273 ctl_queue(io);
1274 break;
1275 }
1276 case XPT_CONT_TARGET_IO: {
1277 int srr = 0;
1278 uint32_t srr_off = 0;
1279
1280 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio;
1281 io = (union ctl_io *)atio->ccb_h.io_ptr;
1282
1283 softc->ctios_returned++;
1284#ifdef CTLFEDEBUG
1285 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n",
1286 __func__, atio->tag_id, done_ccb->ccb_h.flags);
1287#endif
1288 /*
1289 * Handle SRR case were the data pointer is pushed back hack
1290 */
1291 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV
1292 && done_ccb->csio.msg_ptr != NULL
1293 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED
1294 && done_ccb->csio.msg_ptr[1] == 5
1295 && done_ccb->csio.msg_ptr[2] == 0) {
1296 srr = 1;
1297 srr_off =
1298 (done_ccb->csio.msg_ptr[3] << 24)
1299 | (done_ccb->csio.msg_ptr[4] << 16)
1300 | (done_ccb->csio.msg_ptr[5] << 8)
1301 | (done_ccb->csio.msg_ptr[6]);
1302 }
1303
1304 if (srr && (done_ccb->ccb_h.flags & CAM_SEND_STATUS)) {
1305 /*
1306 * If status was being sent, the back end data is now
1307 * history. Hack it up and resubmit a new command with
1308 * the CDB adjusted. If the SIM does the right thing,
1309 * all of the resid math should work.
1310 */
1311 softc->ccbs_freed++;
1312 xpt_release_ccb(done_ccb);
1313 ctl_free_io(io);
1314 if (ctlfe_adjust_cdb(atio, srr_off) == 0) {
1315 done_ccb = (union ccb *)atio;
1316 goto resubmit;
1317 }
1318 /*
1319 * Fall through to doom....
1320 */
1321 } else if (srr) {
1322 /*
1323 * If we have an srr and we're still sending data, we
1324 * should be able to adjust offsets and cycle again.
1325 */
1326 io->scsiio.kern_rel_offset =
1327 io->scsiio.ext_data_filled = srr_off;
1328 io->scsiio.ext_data_len = io->scsiio.kern_total_len -
1329 io->scsiio.kern_rel_offset;
1330 softc->ccbs_freed++;
1331 io->scsiio.io_hdr.status = CTL_STATUS_NONE;
1332 xpt_release_ccb(done_ccb);
1333 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h,
1334 periph_links.tqe);
1335 xpt_schedule(periph, /*priority*/ 1);
1336 return;
1337 }
1338
1339 /*
1340 * If we were sending status back to the initiator, free up
1341 * resources. If we were doing a datamove, call the
1342 * datamove done routine.
1343 */
1344 if (done_ccb->ccb_h.flags & CAM_SEND_STATUS) {
1345 softc->ccbs_freed++;
1346 xpt_release_ccb(done_ccb);
1347 ctl_free_io(io);
1348 /*
1349 * For a wildcard attachment, commands can come in
1350 * with a specific target/lun. Reset the target
1351 * and LUN fields back to the wildcard values before
1352 * we send them back down to the SIM. The SIM has
1353 * a wildcard LUN enabled, not whatever target/lun
1354 * these happened to be.
1355 */
1356 if (softc->flags & CTLFE_LUN_WILDCARD) {
1357 atio->ccb_h.target_id = CAM_TARGET_WILDCARD;
1358 atio->ccb_h.target_lun = CAM_LUN_WILDCARD;
1359 }
1360 if (periph->flags & CAM_PERIPH_INVALID) {
1361 ctlfe_free_ccb(periph, (union ccb *)atio);
1362 return;
1363 } else {
1364 xpt_action((union ccb *)atio);
1365 softc->atios_sent++;
1366 }
1367 } else {
1368 struct ctlfe_lun_cmd_info *cmd_info;
1369 struct ccb_scsiio *csio;
1370
1371 csio = &done_ccb->csio;
1372 cmd_info = (struct ctlfe_lun_cmd_info *)
1373 io->io_hdr.port_priv;
1374
1375 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG;
1376
1377 io->scsiio.ext_data_len += csio->dxfer_len;
1378 if (io->scsiio.ext_data_len >
1379 io->scsiio.kern_total_len) {
1380 xpt_print(periph->path, "%s: tag 0x%04x "
1381 "done len %u > total %u sent %u\n",
1382 __func__, io->scsiio.tag_num,
1383 io->scsiio.ext_data_len,
1384 io->scsiio.kern_total_len,
1385 io->scsiio.ext_data_filled);
1386 }
1387 /*
1388 * Translate CAM status to CTL status. Success
1389 * does not change the overall, ctl_io status. In
1390 * that case we just set port_status to 0. If we
1391 * have a failure, though, set a data phase error
1392 * for the overall ctl_io.
1393 */
1394 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) {
1395 case CAM_REQ_CMP:
1396 io->io_hdr.port_status = 0;
1397 break;
1398 default:
1399 /*
1400 * XXX KDM we probably need to figure out a
1401 * standard set of errors that the SIM
1402 * drivers should return in the event of a
1403 * data transfer failure. A data phase
1404 * error will at least point the user to a
1405 * data transfer error of some sort.
1406 * Hopefully the SIM printed out some
1407 * additional information to give the user
1408 * a clue what happened.
1409 */
1410 io->io_hdr.port_status = 0xbad1;
1411 ctl_set_data_phase_error(&io->scsiio);
1412 /*
1413 * XXX KDM figure out residual.
1414 */
1415 break;
1416 }
1417 /*
1418 * If we had to break this S/G list into multiple
1419 * pieces, figure out where we are in the list, and
1420 * continue sending pieces if necessary.
1421 */
1422 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE)
1423 && (io->io_hdr.port_status == 0)
1424 && (cmd_info->cur_transfer_index <
1425 io->scsiio.kern_sg_entries)) {
1426 struct ctl_sg_entry *sglist;
1427 ccb_flags flags;
1428 uint8_t scsi_status;
1429 uint8_t *data_ptr;
1430 uint32_t dxfer_len;
1431 int *ti;
1432
1433 sglist = (struct ctl_sg_entry *)
1434 io->scsiio.kern_data_ptr;
1435 ti = &cmd_info->cur_transfer_index;
1436 flags = atio->ccb_h.flags &
1437 (CAM_DIS_DISCONNECT|
1438 CAM_TAG_ACTION_VALID|
1439 CAM_DIR_MASK);
1440
1441 /*
1442 * Set the direction, relative to the initiator.
1443 */
1444 flags &= ~CAM_DIR_MASK;
1445 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
1446 CTL_FLAG_DATA_IN)
1447 flags |= CAM_DIR_IN;
1448 else
1449 flags |= CAM_DIR_OUT;
1450
1451 data_ptr = sglist[*ti].addr;
1452 dxfer_len = sglist[*ti].len;
1453 (*ti)++;
1454
1455 scsi_status = 0;
1456
1457 if (((flags & CAM_SEND_STATUS) == 0)
1458 && (dxfer_len == 0)) {
1459 printf("%s: tag %04x no status or "
1460 "len cdb = %02x\n", __func__,
1461 atio->tag_id,
1462 atio->cdb_io.cdb_bytes[0]);
1463 printf("%s: tag %04x io status %#x\n",
1464 __func__, atio->tag_id,
1465 io->io_hdr.status);
1466 }
1467
1468 cam_fill_ctio(csio,
1469 /*retries*/ 2,
1470 ctlfedone,
1471 flags,
1472 (flags & CAM_TAG_ACTION_VALID) ?
1473 MSG_SIMPLE_Q_TAG : 0,
1474 atio->tag_id,
1475 atio->init_id,
1476 scsi_status,
1477 /*data_ptr*/ data_ptr,
1478 /*dxfer_len*/ dxfer_len,
1479 /*timeout*/ 5 * 1000);
1480
1481 csio->resid = 0;
1482 csio->ccb_h.ccb_atio = atio;
1483 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1484 softc->ctios_sent++;
1485 xpt_action((union ccb *)csio);
1486 } else {
1487 /*
1488 * Release the CTIO. The ATIO will be sent back
1489 * down to the SIM once we send status.
1490 */
1491 softc->ccbs_freed++;
1492 xpt_release_ccb(done_ccb);
1493
1494 /* Call the backend move done callback */
1495 io->scsiio.be_move_done(io);
1496 }
1497 }
1498 break;
1499 }
1500 case XPT_IMMEDIATE_NOTIFY: {
1501 union ctl_io *io;
1502 struct ccb_immediate_notify *inot;
1503 cam_status status;
1504 int frozen;
1505
1506 inot = &done_ccb->cin1;
1507
1508 softc->inots_returned++;
1509
1510 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1511
1512 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x "
1513 "seq %#x\n", __func__, inot->ccb_h.status,
1514 inot->tag_id, inot->seq_id);
1515
1516 io = ctl_alloc_io(bus_softc->fe.ctl_pool_ref);
1517 if (io != NULL) {
1518 int send_ctl_io;
1519
1520 send_ctl_io = 1;
1521
1522 ctl_zero_io(io);
1523 io->io_hdr.io_type = CTL_IO_TASK;
1524 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb;
1525 inot->ccb_h.io_ptr = io;
1526 io->io_hdr.nexus.initid.id = inot->initiator_id;
1527 io->io_hdr.nexus.targ_port = bus_softc->fe.targ_port;
1528 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id;
1529 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun;
1530 /* XXX KDM should this be the tag_id? */
1531 io->taskio.tag_num = inot->seq_id;
1532
1533 status = inot->ccb_h.status & CAM_STATUS_MASK;
1534 switch (status) {
1535 case CAM_SCSI_BUS_RESET:
1536 io->taskio.task_action = CTL_TASK_BUS_RESET;
1537 break;
1538 case CAM_BDR_SENT:
1539 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1540 break;
1541 case CAM_MESSAGE_RECV:
1542 switch (inot->arg) {
1543 case MSG_ABORT_TASK_SET:
1544 /*
1545 * XXX KDM this isn't currently
1546 * supported by CTL. It ends up
1547 * being a no-op.
1548 */
1549 io->taskio.task_action =
1550 CTL_TASK_ABORT_TASK_SET;
1551 break;
1552 case MSG_TARGET_RESET:
1553 io->taskio.task_action =
1554 CTL_TASK_TARGET_RESET;
1555 break;
1556 case MSG_ABORT_TASK:
1557 io->taskio.task_action =
1558 CTL_TASK_ABORT_TASK;
1559 break;
1560 case MSG_LOGICAL_UNIT_RESET:
1561 io->taskio.task_action =
1562 CTL_TASK_LUN_RESET;
1563 break;
1564 case MSG_CLEAR_TASK_SET:
1565 /*
1566 * XXX KDM this isn't currently
1567 * supported by CTL. It ends up
1568 * being a no-op.
1569 */
1570 io->taskio.task_action =
1571 CTL_TASK_CLEAR_TASK_SET;
1572 break;
1573 case MSG_CLEAR_ACA:
1574 io->taskio.task_action =
1575 CTL_TASK_CLEAR_ACA;
1576 break;
1577 case MSG_NOOP:
1578 send_ctl_io = 0;
1579 break;
1580 default:
1581 xpt_print(periph->path, "%s: "
1582 "unsupported message 0x%x\n",
1583 __func__, inot->arg);
1584 send_ctl_io = 0;
1585 break;
1586 }
1587 break;
1588 case CAM_REQ_ABORTED:
1589 /*
1590 * This request was sent back by the driver.
1591 * XXX KDM what do we do here?
1592 */
1593 send_ctl_io = 0;
1594 break;
1595 case CAM_REQ_INVALID:
1596 case CAM_PROVIDE_FAIL:
1597 default:
1598 /*
1599 * We should only get here if we're talking
1600 * to a talking to a SIM that is target
1601 * capable but supports the old API. In
1602 * that case, we need to just free the CCB.
1603 * If we actually send a notify acknowledge,
1604 * it will send that back with an error as
1605 * well.
1606 */
1607
1608 if ((status != CAM_REQ_INVALID)
1609 && (status != CAM_PROVIDE_FAIL))
1610 xpt_print(periph->path, "%s: "
1611 "unsupported CAM status "
1612 "0x%x\n", __func__, status);
1613
1614 ctl_free_io(io);
1615 ctlfe_free_ccb(periph, done_ccb);
1616
1617 return;
1618 }
1619 if (send_ctl_io != 0) {
1620 ctl_queue(io);
1621 } else {
1622 ctl_free_io(io);
1623 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1624 done_ccb->ccb_h.func_code =
1625 XPT_NOTIFY_ACKNOWLEDGE;
1626 xpt_action(done_ccb);
1627 }
1628 } else {
1629 xpt_print(periph->path, "%s: could not allocate "
1630 "ctl_io for immediate notify!\n", __func__);
1631 /* requeue this to the adapter */
1632 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1633 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1634 xpt_action(done_ccb);
1635 }
1636
1637 if (frozen != 0) {
1638 cam_release_devq(periph->path,
1639 /*relsim_flags*/ 0,
1640 /*opening reduction*/ 0,
1641 /*timeout*/ 0,
1642 /*getcount_only*/ 0);
1643 }
1644 break;
1645 }
1646 case XPT_NOTIFY_ACKNOWLEDGE:
1647 /*
1648 * Queue this back down to the SIM as an immediate notify.
1649 */
1650 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
1651 xpt_action(done_ccb);
1652 softc->inots_sent++;
1653 break;
1654 case XPT_ABORT:
1655 /*
1656 * XPT_ABORT is an immediate CCB, we shouldn't get here.
1657 */
1658 panic("%s: XPT_ABORT CCB returned!", __func__);
1659 break;
1660 case XPT_SET_SIM_KNOB:
1661 case XPT_GET_SIM_KNOB:
1662 break;
1663 default:
1664 panic("%s: unexpected CCB type %#x", __func__,
1665 done_ccb->ccb_h.func_code);
1666 break;
1667 }
1668}
1669
1670static void
1671ctlfe_onoffline(void *arg, int online)
1672{
1673 struct ctlfe_softc *bus_softc;
1674 union ccb *ccb;
1675 cam_status status;
1676 struct cam_path *path;
1677 struct cam_sim *sim;
1678 int set_wwnn;
1679
1680 bus_softc = (struct ctlfe_softc *)arg;
1681
1682 set_wwnn = 0;
1683
1684 sim = bus_softc->sim;
1685
1686 mtx_assert(sim->mtx, MA_OWNED);
1687
1688 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id,
1689 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1690 if (status != CAM_REQ_CMP) {
1691 printf("%s: unable to create path!\n", __func__);
1692 return;
1693 }
1694 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, M_NOWAIT | M_ZERO);
1695 if (ccb == NULL) {
1696 printf("%s: unable to malloc CCB!\n", __func__);
1697 xpt_free_path(path);
1698 return;
1699 }
1700 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
1701
1702 /*
1703 * Copan WWN format:
1704 *
1705 * Bits 63-60: 0x5 NAA, IEEE registered name
1706 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan
1707 * Bits 35-12: Copan SSN (Sequential Serial Number)
1708 * Bits 11-8: Type of port:
1709 * 1 == N-Port
1710 * 2 == F-Port
1711 * 3 == NL-Port
1712 * Bits 7-0: 0 == Node Name, >0 == Port Number
1713 */
1714
1715 if (online != 0) {
1716
1717 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB;
1718
1719
1720 xpt_action(ccb);
1721
1722
1723 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){
1724#ifdef RANDOM_WWNN
1725 uint64_t random_bits;
1726#endif
1727
1728 printf("%s: %s current WWNN %#jx\n", __func__,
1729 bus_softc->port_name,
1730 ccb->knob.xport_specific.fc.wwnn);
1731 printf("%s: %s current WWPN %#jx\n", __func__,
1732 bus_softc->port_name,
1733 ccb->knob.xport_specific.fc.wwpn);
1734
1735#ifdef RANDOM_WWNN
1736 arc4rand(&random_bits, sizeof(random_bits), 0);
1737#endif
1738
1739 /*
1740 * XXX KDM this is a bit of a kludge for now. We
1741 * take the current WWNN/WWPN from the card, and
1742 * replace the company identifier and the NL-Port
1743 * indicator and the port number (for the WWPN).
1744 * This should be replaced later with ddb_GetWWNN,
1745 * or possibly a more centralized scheme. (It
1746 * would be nice to have the WWNN/WWPN for each
1747 * port stored in the ctl_frontend structure.)
1748 */
1749#ifdef RANDOM_WWNN
1750 ccb->knob.xport_specific.fc.wwnn =
1751 (random_bits &
1752 0x0000000fffffff00ULL) |
1753 /* Company ID */ 0x5000ED5000000000ULL |
1754 /* NL-Port */ 0x0300;
1755 ccb->knob.xport_specific.fc.wwpn =
1756 (random_bits &
1757 0x0000000fffffff00ULL) |
1758 /* Company ID */ 0x5000ED5000000000ULL |
1759 /* NL-Port */ 0x3000 |
1760 /* Port Num */ (bus_softc->fe.targ_port & 0xff);
1761
1762 /*
1763 * This is a bit of an API break/reversal, but if
1764 * we're doing the random WWNN that's a little
1765 * different anyway. So record what we're actually
1766 * using with the frontend code so it's reported
1767 * accurately.
1768 */
1769 bus_softc->fe.wwnn =
1770 ccb->knob.xport_specific.fc.wwnn;
1771 bus_softc->fe.wwpn =
1772 ccb->knob.xport_specific.fc.wwpn;
1773 set_wwnn = 1;
1774#else /* RANDOM_WWNN */
1775 /*
1776 * If the user has specified a WWNN/WWPN, send them
1777 * down to the SIM. Otherwise, record what the SIM
1778 * has reported.
1779 */
1780 if ((bus_softc->fe.wwnn != 0)
1781 && (bus_softc->fe.wwpn != 0)) {
1782 ccb->knob.xport_specific.fc.wwnn =
1783 bus_softc->fe.wwnn;
1784 ccb->knob.xport_specific.fc.wwpn =
1785 bus_softc->fe.wwpn;
1786 set_wwnn = 1;
1787 } else {
1788 bus_softc->fe.wwnn =
1789 ccb->knob.xport_specific.fc.wwnn;
1790 bus_softc->fe.wwpn =
1791 ccb->knob.xport_specific.fc.wwpn;
1792 }
1793#endif /* RANDOM_WWNN */
1794
1795
1796 if (set_wwnn != 0) {
1797 printf("%s: %s new WWNN %#jx\n", __func__,
1798 bus_softc->port_name,
1799 ccb->knob.xport_specific.fc.wwnn);
1800 printf("%s: %s new WWPN %#jx\n", __func__,
1801 bus_softc->port_name,
1802 ccb->knob.xport_specific.fc.wwpn);
1803 }
1804 } else {
1805 printf("%s: %s has no valid WWNN/WWPN\n", __func__,
1806 bus_softc->port_name);
1807 }
1808 }
1809 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1810 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
1811 if (set_wwnn != 0)
1812 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS;
1813
1814 if (online != 0)
1815 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET;
1816 else
1817 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE;
1818
1819 xpt_action(ccb);
1820
1821 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1822 printf("%s: SIM %s (path id %d) target %s failed with "
1823 "status %#x\n",
1824 __func__, bus_softc->port_name, bus_softc->path_id,
1825 (online != 0) ? "enable" : "disable",
1826 ccb->ccb_h.status);
1827 } else {
1828 printf("%s: SIM %s (path id %d) target %s succeeded\n",
1829 __func__, bus_softc->port_name, bus_softc->path_id,
1830 (online != 0) ? "enable" : "disable");
1831 }
1832
1833 xpt_free_path(path);
1834
1835 free(ccb, M_TEMP);
1836
1837 return;
1838}
1839
1840static void
1841ctlfe_online(void *arg)
1842{
1843 struct ctlfe_softc *bus_softc;
1844 struct cam_path *path;
1845 cam_status status;
1846 struct ctlfe_lun_softc *lun_softc;
1847 struct cam_sim *sim;
1848
1849 bus_softc = (struct ctlfe_softc *)arg;
1850 sim = bus_softc->sim;
1851
1852 CAM_SIM_LOCK(sim);
1853
1854 /*
1855 * Create the wildcard LUN before bringing the port online.
1856 */
1857 status = xpt_create_path(&path, /*periph*/ NULL,
1858 bus_softc->path_id, CAM_TARGET_WILDCARD,
1859 CAM_LUN_WILDCARD);
1860 if (status != CAM_REQ_CMP) {
1861 printf("%s: unable to create path for wildcard periph\n",
1862 __func__);
1863 CAM_SIM_UNLOCK(sim);
1864 return;
1865 }
1866
1867 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE,
1868 M_NOWAIT | M_ZERO);
1869 if (lun_softc == NULL) {
1870 xpt_print(path, "%s: unable to allocate softc for "
1871 "wildcard periph\n", __func__);
1872 xpt_free_path(path);
1873 CAM_SIM_UNLOCK(sim);
1874 return;
1875 }
1876
1877 lun_softc->parent_softc = bus_softc;
1878 lun_softc->flags |= CTLFE_LUN_WILDCARD;
1879
1880 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, lun_softc, links);
1881
1882
1883 status = cam_periph_alloc(ctlferegister,
1884 ctlfeoninvalidate,
1885 ctlfecleanup,
1886 ctlfestart,
1887 "ctl",
1888 CAM_PERIPH_BIO,
1889 path,
1890 ctlfeasync,
1891 0,
1892 lun_softc);
1893
1894 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1895 const struct cam_status_entry *entry;
1896
1897 entry = cam_fetch_status_entry(status);
1898
1899 printf("%s: CAM error %s (%#x) returned from "
1900 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1901 entry->status_text : "Unknown", status);
1902 }
1903
1904 xpt_free_path(path);
1905
1906 ctlfe_onoffline(arg, /*online*/ 1);
1907
1908 CAM_SIM_UNLOCK(sim);
1909}
1910
1911static void
1912ctlfe_offline(void *arg)
1913{
1914 struct ctlfe_softc *bus_softc;
1915 struct cam_path *path;
1916 cam_status status;
1917 struct cam_periph *periph;
1918 struct cam_sim *sim;
1919
1920 bus_softc = (struct ctlfe_softc *)arg;
1921 sim = bus_softc->sim;
1922
1923 CAM_SIM_LOCK(sim);
1924
1925 ctlfe_onoffline(arg, /*online*/ 0);
1926
1927 /*
1928 * Disable the wildcard LUN for this port now that we have taken
1929 * the port offline.
1930 */
1931 status = xpt_create_path(&path, /*periph*/ NULL,
1932 bus_softc->path_id, CAM_TARGET_WILDCARD,
1933 CAM_LUN_WILDCARD);
1934 if (status != CAM_REQ_CMP) {
1935 CAM_SIM_UNLOCK(sim);
1936 printf("%s: unable to create path for wildcard periph\n",
1937 __func__);
1938 return;
1939 }
1940
1941
1942 if ((periph = cam_periph_find(path, "ctl")) != NULL)
1943 cam_periph_invalidate(periph);
1944
1945 xpt_free_path(path);
1946
1947 CAM_SIM_UNLOCK(sim);
1948}
1949
1950static int
1951ctlfe_targ_enable(void *arg, struct ctl_id targ_id)
1952{
1953 return (0);
1954}
1955
1956static int
1957ctlfe_targ_disable(void *arg, struct ctl_id targ_id)
1958{
1959 return (0);
1960}
1961
1962/*
1963 * This will get called to enable a LUN on every bus that is attached to
1964 * CTL. So we only need to create a path/periph for this particular bus.
1965 */
1966static int
1967ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id)
1968{
1969 struct ctlfe_softc *bus_softc;
1970 struct ctlfe_lun_softc *softc;
1971 struct cam_path *path;
1972 struct cam_periph *periph;
1973 struct cam_sim *sim;
1974 cam_status status;
1975
1976 bus_softc = (struct ctlfe_softc *)arg;
1977 sim = bus_softc->sim;
1978
1979 status = xpt_create_path_unlocked(&path, /*periph*/ NULL,
1980 bus_softc->path_id,
1981 targ_id.id, lun_id);
1982 /* XXX KDM need some way to return status to CTL here? */
1983 if (status != CAM_REQ_CMP) {
1984 printf("%s: could not create path, status %#x\n", __func__,
1985 status);
1986 return (1);
1987 }
1988
1989 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO);
1990 CAM_SIM_LOCK(sim);
1991 periph = cam_periph_find(path, "ctl");
1992 if (periph != NULL) {
1993 /* We've already got a periph, no need to alloc a new one. */
1994 xpt_free_path(path);
1995 free(softc, M_CTLFE);
1996 CAM_SIM_UNLOCK(sim);
1997 return (0);
1998 }
1999
2000 softc->parent_softc = bus_softc;
2001 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links);
2002
2003 status = cam_periph_alloc(ctlferegister,
2004 ctlfeoninvalidate,
2005 ctlfecleanup,
2006 ctlfestart,
2007 "ctl",
2008 CAM_PERIPH_BIO,
2009 path,
2010 ctlfeasync,
2011 0,
2012 softc);
2013
2014 xpt_free_path(path);
2015
2016 CAM_SIM_UNLOCK(sim);
2017
2018 return (0);
2019}
2020
2021/*
2022 * This will get called when the user removes a LUN to disable that LUN
2023 * on every bus that is attached to CTL.
2024 */
2025static int
2026ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id)
2027{
2028 struct ctlfe_softc *softc;
2029 struct ctlfe_lun_softc *lun_softc;
2030 struct cam_sim *sim;
2031
2032 softc = (struct ctlfe_softc *)arg;
2033 sim = softc->sim;
2034
2035 CAM_SIM_LOCK(sim);
2036 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) {
2037 struct cam_path *path;
2038
2039 path = lun_softc->periph->path;
2040
2041 if ((xpt_path_target_id(path) == targ_id.id)
2042 && (xpt_path_lun_id(path) == lun_id)) {
2043 break;
2044 }
2045 }
2046 if (lun_softc == NULL) {
2047 CAM_SIM_UNLOCK(sim);
2048 printf("%s: can't find target %d lun %d\n", __func__,
2049 targ_id.id, lun_id);
2050 return (1);
2051 }
2052
2053 cam_periph_invalidate(lun_softc->periph);
2054
2055 CAM_SIM_UNLOCK(sim);
2056
2057 return (0);
2058}
2059
2060static void
2061ctlfe_dump_sim(struct cam_sim *sim)
2062{
2063
2064 printf("%s%d: max tagged openings: %d, max dev openings: %d\n",
2065 sim->sim_name, sim->unit_number,
2066 sim->max_tagged_dev_openings, sim->max_dev_openings);
2067 printf("%s%d: max_ccbs: %u, ccb_count: %u\n",
2068 sim->sim_name, sim->unit_number,
2069 sim->max_ccbs, sim->ccb_count);
2070 printf("%s%d: ccb_freeq is %sempty\n",
2071 sim->sim_name, sim->unit_number,
2072 (SLIST_FIRST(&sim->ccb_freeq) == NULL) ? "" : "NOT ");
2073 printf("\n");
2074}
2075
2076/*
2077 * Assumes that the SIM lock is held.
2078 */
2079static void
2080ctlfe_dump_queue(struct ctlfe_lun_softc *softc)
2081{
2082 struct ccb_hdr *hdr;
2083 struct cam_periph *periph;
2084 int num_items;
2085
2086 periph = softc->periph;
2087 num_items = 0;
2088
2089 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) {
2090 union ctl_io *io;
2091
2092 io = hdr->io_ptr;
2093
2094 num_items++;
2095
2096 /*
2097 * This can happen when we get an ATIO but can't allocate
2098 * a ctl_io. See the XPT_ACCEPT_TARGET_IO case in ctlfedone().
2099 */
2100 if (io == NULL) {
2101 struct ccb_scsiio *csio;
2102
2103 csio = (struct ccb_scsiio *)hdr;
2104
2105 xpt_print(periph->path, "CCB %#x ctl_io allocation "
2106 "failed\n", csio->tag_id);
2107 continue;
2108 }
2109
2110 /*
2111 * Only regular SCSI I/O is put on the work
2112 * queue, so we can print sense here. There may be no
2113 * sense if it's no the queue for a DMA, but this serves to
2114 * print out the CCB as well.
2115 *
2116 * XXX KDM switch this over to scsi_sense_print() when
2117 * CTL is merged in with CAM.
2118 */
2119 ctl_io_error_print(io, NULL);
2120
2121 /*
2122 * We're sending status back to the
2123 * initiator, so we're on the queue waiting
2124 * for a CTIO to do that.
2125 */
2126 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
2127 continue;
2128
2129 /*
2130 * Otherwise, we're on the queue waiting to
2131 * do a data transfer.
2132 */
2133 xpt_print(periph->path, "Total %u, Current %u, Resid %u\n",
2134 io->scsiio.kern_total_len, io->scsiio.kern_data_len,
2135 io->scsiio.kern_data_resid);
2136 }
2137
2138 xpt_print(periph->path, "%d requests total waiting for CCBs\n",
2139 num_items);
2140 xpt_print(periph->path, "%ju CCBs oustanding (%ju allocated, %ju "
2141 "freed)\n", (uintmax_t)(softc->ccbs_alloced -
2142 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced,
2143 (uintmax_t)softc->ccbs_freed);
2144 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju "
2145 "returned\n", (uintmax_t)(softc->ctios_sent -
2146 softc->ctios_returned), softc->ctios_sent,
2147 softc->ctios_returned);
2148}
2149
2150/*
2151 * This function is called when we fail to get a CCB for a DMA or status return
2152 * to the initiator within the specified time period.
2153 *
2154 * The callout code should insure that we hold the sim mutex here.
2155 */
2156static void
2157ctlfe_dma_timeout(void *arg)
2158{
2159 struct ctlfe_lun_softc *softc;
2160 struct cam_periph *periph;
2161 struct cam_sim *sim;
2162 int num_queued;
2163
2164 softc = (struct ctlfe_lun_softc *)arg;
2165 periph = softc->periph;
2166 sim = xpt_path_sim(periph->path);
2167 num_queued = 0;
2168
2169 /*
2170 * Nothing to do...
2171 */
2172 if (TAILQ_FIRST(&softc->work_queue) == NULL) {
2173 xpt_print(periph->path, "TIMEOUT triggered after %d "
2174 "seconds, but nothing on work queue??\n",
2175 CTLFE_DMA_TIMEOUT);
2176 return;
2177 }
2178
2179 xpt_print(periph->path, "TIMEOUT (%d seconds) waiting for DMA to "
2180 "start\n", CTLFE_DMA_TIMEOUT);
2181
2182 ctlfe_dump_queue(softc);
2183
2184 ctlfe_dump_sim(sim);
2185
2186 xpt_print(periph->path, "calling xpt_schedule() to attempt to "
2187 "unstick our queue\n");
2188
2189 xpt_schedule(periph, /*priority*/ 1);
2190
2191 xpt_print(periph->path, "xpt_schedule() call complete\n");
2192}
2193
2194/*
2195 * Datamove/done routine called by CTL. Put ourselves on the queue to
2196 * receive a CCB from CAM so we can queue the continue I/O request down
2197 * to the adapter.
2198 */
2199static void
2200ctlfe_datamove_done(union ctl_io *io)
2201{
2202 union ccb *ccb;
2203 struct cam_sim *sim;
2204 struct cam_periph *periph;
2205 struct ctlfe_lun_softc *softc;
2206
2207 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
2208
2209 sim = xpt_path_sim(ccb->ccb_h.path);
2210
2211 CAM_SIM_LOCK(sim);
2212
2213 periph = xpt_path_periph(ccb->ccb_h.path);
2214
2215 softc = (struct ctlfe_lun_softc *)periph->softc;
2216
2217 if (io->io_hdr.io_type == CTL_IO_TASK) {
2218 /*
2219 * Task management commands don't require any further
2220 * communication back to the adapter. Requeue the CCB
2221 * to the adapter, and free the CTL I/O.
2222 */
2223 xpt_print(ccb->ccb_h.path, "%s: returning task I/O "
2224 "tag %#x seq %#x\n", __func__,
2225 ccb->cin1.tag_id, ccb->cin1.seq_id);
2226 /*
2227 * Send the notify acknowledge down to the SIM, to let it
2228 * know we processed the task management command.
2229 */
2230 ccb->ccb_h.status = CAM_REQ_INPROG;
2231 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
2232 xpt_action(ccb);
2233 ctl_free_io(io);
2234 } else {
2235 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
2236 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
2237 else
2238 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
2239
2240 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
2241 periph_links.tqe);
2242
2243 /*
2244 * Reset the timeout for our latest active DMA.
2245 */
2246 callout_reset(&softc->dma_callout,
2247 CTLFE_DMA_TIMEOUT * hz,
2248 ctlfe_dma_timeout, softc);
2249 /*
2250 * Ask for the CAM transport layer to send us a CCB to do
2251 * the DMA or send status, unless ctlfe_dma_enabled is set
2252 * to 0.
2253 */
2254 if (ctlfe_dma_enabled != 0)
2255 xpt_schedule(periph, /*priority*/ 1);
2256 }
2257
2258 CAM_SIM_UNLOCK(sim);
2259}
2260
2261static void
2262ctlfe_dump(void)
2263{
2264 struct ctlfe_softc *bus_softc;
2265
2266 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) {
2267 struct ctlfe_lun_softc *lun_softc;
2268
2269 ctlfe_dump_sim(bus_softc->sim);
2270
2271 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links) {
2272 ctlfe_dump_queue(lun_softc);
2273 }
2274 }
2275}
2 * Copyright (c) 2008, 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/scsi_ctl.c#4 $
31 */
32/*
33 * Peripheral driver interface between CAM and CTL (CAM Target Layer).
34 *
35 * Author: Ken Merry <ken@FreeBSD.org>
36 */
37
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/sys/cam/ctl/scsi_ctl.c 249466 2013-04-14 09:28:14Z mav $");
40
41#include <sys/param.h>
42#include <sys/queue.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/lock.h>
46#include <sys/mutex.h>
47#include <sys/condvar.h>
48#include <sys/malloc.h>
49#include <sys/bus.h>
50#include <sys/endian.h>
51#include <sys/sbuf.h>
52#include <sys/sysctl.h>
53#include <sys/types.h>
54#include <sys/systm.h>
55#include <machine/bus.h>
56
57#include <cam/cam.h>
58#include <cam/cam_ccb.h>
59#include <cam/cam_periph.h>
60#include <cam/cam_queue.h>
61#include <cam/cam_xpt_periph.h>
62#include <cam/cam_debug.h>
63#include <cam/cam_sim.h>
64#include <cam/cam_xpt.h>
65
66#include <cam/scsi/scsi_all.h>
67#include <cam/scsi/scsi_message.h>
68
69#include <cam/ctl/ctl_io.h>
70#include <cam/ctl/ctl.h>
71#include <cam/ctl/ctl_frontend.h>
72#include <cam/ctl/ctl_util.h>
73#include <cam/ctl/ctl_error.h>
74
75typedef enum {
76 CTLFE_CCB_DEFAULT = 0x00,
77 CTLFE_CCB_WAITING = 0x01
78} ctlfe_ccb_types;
79
80struct ctlfe_softc {
81 struct ctl_frontend fe;
82 path_id_t path_id;
83 struct cam_sim *sim;
84 char port_name[DEV_IDLEN];
85 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list;
86 STAILQ_ENTRY(ctlfe_softc) links;
87};
88
89STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list;
90struct mtx ctlfe_list_mtx;
91static char ctlfe_mtx_desc[] = "ctlfelist";
92static int ctlfe_dma_enabled = 1;
93#ifdef CTLFE_INIT_ENABLE
94static int ctlfe_max_targets = 1;
95static int ctlfe_num_targets = 0;
96#endif
97
98typedef enum {
99 CTLFE_LUN_NONE = 0x00,
100 CTLFE_LUN_WILDCARD = 0x01
101} ctlfe_lun_flags;
102
103struct ctlfe_lun_softc {
104 struct ctlfe_softc *parent_softc;
105 struct cam_periph *periph;
106 ctlfe_lun_flags flags;
107 struct callout dma_callout;
108 uint64_t ccbs_alloced;
109 uint64_t ccbs_freed;
110 uint64_t ctios_sent;
111 uint64_t ctios_returned;
112 uint64_t atios_sent;
113 uint64_t atios_returned;
114 uint64_t inots_sent;
115 uint64_t inots_returned;
116 /* bus_dma_tag_t dma_tag; */
117 TAILQ_HEAD(, ccb_hdr) work_queue;
118 STAILQ_ENTRY(ctlfe_lun_softc) links;
119};
120
121typedef enum {
122 CTLFE_CMD_NONE = 0x00,
123 CTLFE_CMD_PIECEWISE = 0x01
124} ctlfe_cmd_flags;
125
126/*
127 * The size limit of this structure is CTL_PORT_PRIV_SIZE, from ctl_io.h.
128 * Currently that is 600 bytes.
129 */
130struct ctlfe_lun_cmd_info {
131 int cur_transfer_index;
132 ctlfe_cmd_flags flags;
133 /*
134 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16
135 * bytes on amd64. So with 32 elements, this is 256 bytes on
136 * i386 and 512 bytes on amd64.
137 */
138 bus_dma_segment_t cam_sglist[32];
139};
140
141/*
142 * When we register the adapter/bus, request that this many ctl_ios be
143 * allocated. This should be the maximum supported by the adapter, but we
144 * currently don't have a way to get that back from the path inquiry.
145 * XXX KDM add that to the path inquiry.
146 */
147#define CTLFE_REQ_CTL_IO 4096
148/*
149 * Number of Accept Target I/O CCBs to allocate and queue down to the
150 * adapter per LUN.
151 * XXX KDM should this be controlled by CTL?
152 */
153#define CTLFE_ATIO_PER_LUN 1024
154/*
155 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to
156 * allocate and queue down to the adapter per LUN.
157 * XXX KDM should this be controlled by CTL?
158 */
159#define CTLFE_IN_PER_LUN 1024
160
161/*
162 * Timeout (in seconds) on CTIO CCB allocation for doing a DMA or sending
163 * status to the initiator. The SIM is expected to have its own timeouts,
164 * so we're not putting this timeout around the CCB execution time. The
165 * SIM should timeout and let us know if it has an issue.
166 */
167#define CTLFE_DMA_TIMEOUT 60
168
169/*
170 * Turn this on to enable extra debugging prints.
171 */
172#if 0
173#define CTLFE_DEBUG
174#endif
175
176/*
177 * Use randomly assigned WWNN/WWPN values. This is to work around an issue
178 * in the FreeBSD initiator that makes it unable to rescan the target if
179 * the target gets rebooted and the WWNN/WWPN stay the same.
180 */
181#if 0
182#define RANDOM_WWNN
183#endif
184
185SYSCTL_INT(_kern_cam_ctl, OID_AUTO, dma_enabled, CTLFLAG_RW,
186 &ctlfe_dma_enabled, 0, "DMA enabled");
187MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface");
188
189#define ccb_type ppriv_field0
190/* This is only used in the ATIO */
191#define io_ptr ppriv_ptr1
192
193/* This is only used in the CTIO */
194#define ccb_atio ppriv_ptr1
195
196int ctlfeinitialize(void);
197void ctlfeshutdown(void);
198static periph_init_t ctlfeinit;
199static void ctlfeasync(void *callback_arg, uint32_t code,
200 struct cam_path *path, void *arg);
201static periph_ctor_t ctlferegister;
202static periph_oninv_t ctlfeoninvalidate;
203static periph_dtor_t ctlfecleanup;
204static periph_start_t ctlfestart;
205static void ctlfedone(struct cam_periph *periph,
206 union ccb *done_ccb);
207
208static void ctlfe_onoffline(void *arg, int online);
209static void ctlfe_online(void *arg);
210static void ctlfe_offline(void *arg);
211static int ctlfe_targ_enable(void *arg, struct ctl_id targ_id);
212static int ctlfe_targ_disable(void *arg, struct ctl_id targ_id);
213static int ctlfe_lun_enable(void *arg, struct ctl_id targ_id,
214 int lun_id);
215static int ctlfe_lun_disable(void *arg, struct ctl_id targ_id,
216 int lun_id);
217static void ctlfe_dump_sim(struct cam_sim *sim);
218static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc);
219static void ctlfe_dma_timeout(void *arg);
220static void ctlfe_datamove_done(union ctl_io *io);
221static void ctlfe_dump(void);
222
223static struct periph_driver ctlfe_driver =
224{
225 ctlfeinit, "ctl",
226 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0
227};
228
229static int ctlfe_module_event_handler(module_t, int /*modeventtype_t*/, void *);
230
231/*
232 * We're not using PERIPHDRIVER_DECLARE(), because it runs at SI_SUB_DRIVERS,
233 * and that happens before CTL gets initialised.
234 */
235static moduledata_t ctlfe_moduledata = {
236 "ctlfe",
237 ctlfe_module_event_handler,
238 NULL
239};
240
241DECLARE_MODULE(ctlfe, ctlfe_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH);
242MODULE_VERSION(ctlfe, 1);
243MODULE_DEPEND(ctlfe, ctl, 1, 1, 1);
244MODULE_DEPEND(ctlfe, cam, 1, 1, 1);
245
246extern struct ctl_softc *control_softc;
247
248void
249ctlfeshutdown(void)
250{
251 return;
252}
253
254void
255ctlfeinit(void)
256{
257 cam_status status;
258
259 STAILQ_INIT(&ctlfe_softc_list);
260
261 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF);
262
263 KASSERT(control_softc != NULL, ("CTL is not initialized!"));
264
265 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED |
266 AC_CONTRACT, ctlfeasync, NULL, NULL);
267
268 if (status != CAM_REQ_CMP) {
269 printf("ctl: Failed to attach async callback due to CAM "
270 "status 0x%x!\n", status);
271 }
272}
273
274static int
275ctlfe_module_event_handler(module_t mod, int what, void *arg)
276{
277
278 switch (what) {
279 case MOD_LOAD:
280 periphdriver_register(&ctlfe_driver);
281 return (0);
282 case MOD_UNLOAD:
283 return (EBUSY);
284 default:
285 return (EOPNOTSUPP);
286 }
287}
288
289static void
290ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
291{
292
293#ifdef CTLFEDEBUG
294 printf("%s: entered\n", __func__);
295#endif
296
297 /*
298 * When a new path gets registered, and it is capable of target
299 * mode, go ahead and attach. Later on, we may need to be more
300 * selective, but for now this will be sufficient.
301 */
302 switch (code) {
303 case AC_PATH_REGISTERED: {
304 struct ctl_frontend *fe;
305 struct ctlfe_softc *bus_softc;
306 struct ccb_pathinq *cpi;
307 int retval;
308
309 cpi = (struct ccb_pathinq *)arg;
310
311 /* Don't attach if it doesn't support target mode */
312 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) {
313#ifdef CTLFEDEBUG
314 printf("%s: SIM %s%d doesn't support target mode\n",
315 __func__, cpi->dev_name, cpi->unit_number);
316#endif
317 break;
318 }
319
320#ifdef CTLFE_INIT_ENABLE
321 if (ctlfe_num_targets >= ctlfe_max_targets) {
322 union ccb *ccb;
323 struct cam_sim *sim;
324
325 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP,
326 M_NOWAIT | M_ZERO);
327 if (ccb == NULL) {
328 printf("%s: unable to malloc CCB!\n", __func__);
329 return;
330 }
331 xpt_setup_ccb(&ccb->ccb_h, cpi->ccb_h.path,
332 CAM_PRIORITY_NONE);
333
334 sim = xpt_path_sim(cpi->ccb_h.path);
335
336 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
337 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
338 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR;
339
340 /* We should hold the SIM lock here */
341 mtx_assert(sim->mtx, MA_OWNED);
342
343 xpt_action(ccb);
344
345 if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
346 CAM_REQ_CMP) {
347 printf("%s: SIM %s%d (path id %d) initiator "
348 "enable failed with status %#x\n",
349 __func__, cpi->dev_name,
350 cpi->unit_number, cpi->ccb_h.path_id,
351 ccb->ccb_h.status);
352 } else {
353 printf("%s: SIM %s%d (path id %d) initiator "
354 "enable succeeded\n",
355 __func__, cpi->dev_name,
356 cpi->unit_number, cpi->ccb_h.path_id);
357 }
358
359 free(ccb, M_TEMP);
360
361 break;
362 } else {
363 ctlfe_num_targets++;
364 }
365
366 printf("%s: ctlfe_num_targets = %d\n", __func__,
367 ctlfe_num_targets);
368#endif /* CTLFE_INIT_ENABLE */
369
370 /*
371 * We're in an interrupt context here, so we have to
372 * use M_NOWAIT. Of course this means trouble if we
373 * can't allocate memory.
374 */
375 bus_softc = malloc(sizeof(*bus_softc), M_CTLFE,
376 M_NOWAIT | M_ZERO);
377 if (bus_softc == NULL) {
378 printf("%s: unable to malloc %zd bytes for softc\n",
379 __func__, sizeof(*bus_softc));
380 return;
381 }
382
383 bus_softc->path_id = cpi->ccb_h.path_id;
384 bus_softc->sim = xpt_path_sim(cpi->ccb_h.path);
385 STAILQ_INIT(&bus_softc->lun_softc_list);
386
387 fe = &bus_softc->fe;
388
389 /*
390 * XXX KDM should we be more accurate here ?
391 */
392 if (cpi->transport == XPORT_FC)
393 fe->port_type = CTL_PORT_FC;
394 else
395 fe->port_type = CTL_PORT_SCSI;
396
397 /* XXX KDM what should the real number be here? */
398 fe->num_requested_ctl_io = 4096;
399 snprintf(bus_softc->port_name, sizeof(bus_softc->port_name),
400 "%s%d", cpi->dev_name, cpi->unit_number);
401 /*
402 * XXX KDM it would be nice to allocate storage in the
403 * frontend structure itself.
404 */
405 fe->port_name = bus_softc->port_name;
406 fe->physical_port = cpi->unit_number;
407 fe->virtual_port = cpi->bus_id;
408 fe->port_online = ctlfe_online;
409 fe->port_offline = ctlfe_offline;
410 fe->onoff_arg = bus_softc;
411 fe->targ_enable = ctlfe_targ_enable;
412 fe->targ_disable = ctlfe_targ_disable;
413 fe->lun_enable = ctlfe_lun_enable;
414 fe->lun_disable = ctlfe_lun_disable;
415 fe->targ_lun_arg = bus_softc;
416 fe->fe_datamove = ctlfe_datamove_done;
417 fe->fe_done = ctlfe_datamove_done;
418 fe->fe_dump = ctlfe_dump;
419 /*
420 * XXX KDM the path inquiry doesn't give us the maximum
421 * number of targets supported.
422 */
423 fe->max_targets = cpi->max_target;
424 fe->max_target_id = cpi->max_target;
425
426 /*
427 * XXX KDM need to figure out whether we're the master or
428 * slave.
429 */
430#ifdef CTLFEDEBUG
431 printf("%s: calling ctl_frontend_register() for %s%d\n",
432 __func__, cpi->dev_name, cpi->unit_number);
433#endif
434 retval = ctl_frontend_register(fe, /*master_SC*/ 1);
435 if (retval != 0) {
436 printf("%s: ctl_frontend_register() failed with "
437 "error %d!\n", __func__, retval);
438 free(bus_softc, M_CTLFE);
439 break;
440 } else {
441 mtx_lock(&ctlfe_list_mtx);
442 STAILQ_INSERT_TAIL(&ctlfe_softc_list, bus_softc, links);
443 mtx_unlock(&ctlfe_list_mtx);
444 }
445
446 break;
447 }
448 case AC_PATH_DEREGISTERED: {
449 struct ctlfe_softc *softc = NULL;
450
451 mtx_lock(&ctlfe_list_mtx);
452 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
453 if (softc->path_id == xpt_path_path_id(path)) {
454 STAILQ_REMOVE(&ctlfe_softc_list, softc,
455 ctlfe_softc, links);
456 break;
457 }
458 }
459 mtx_unlock(&ctlfe_list_mtx);
460
461 if (softc != NULL) {
462 /*
463 * XXX KDM are we certain at this point that there
464 * are no outstanding commands for this frontend?
465 */
466 ctl_frontend_deregister(&softc->fe);
467 free(softc, M_CTLFE);
468 }
469 break;
470 }
471 case AC_CONTRACT: {
472 struct ac_contract *ac;
473
474 ac = (struct ac_contract *)arg;
475
476 switch (ac->contract_number) {
477 case AC_CONTRACT_DEV_CHG: {
478 struct ac_device_changed *dev_chg;
479 struct ctlfe_softc *softc;
480 int retval, found;
481
482 dev_chg = (struct ac_device_changed *)ac->contract_data;
483
484 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n",
485 __func__, dev_chg->wwpn, dev_chg->port,
486 xpt_path_path_id(path), dev_chg->target,
487 (dev_chg->arrived == 0) ? "left" : "arrived");
488
489 found = 0;
490
491 mtx_lock(&ctlfe_list_mtx);
492 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
493 if (softc->path_id == xpt_path_path_id(path)) {
494 found = 1;
495 break;
496 }
497 }
498 mtx_unlock(&ctlfe_list_mtx);
499
500 if (found == 0) {
501 printf("%s: CTL port for CAM path %u not "
502 "found!\n", __func__,
503 xpt_path_path_id(path));
504 break;
505 }
506 if (dev_chg->arrived != 0) {
507 retval = ctl_add_initiator(dev_chg->wwpn,
508 softc->fe.targ_port, dev_chg->target);
509 } else {
510 retval = ctl_remove_initiator(
511 softc->fe.targ_port, dev_chg->target);
512 }
513
514 if (retval != 0) {
515 printf("%s: could not %s port %d iid %u "
516 "WWPN %#jx!\n", __func__,
517 (dev_chg->arrived != 0) ? "add" :
518 "remove", softc->fe.targ_port,
519 dev_chg->target,
520 (uintmax_t)dev_chg->wwpn);
521 }
522 break;
523 }
524 default:
525 printf("%s: unsupported contract number %ju\n",
526 __func__, (uintmax_t)ac->contract_number);
527 break;
528 }
529 break;
530 }
531 default:
532 break;
533 }
534}
535
536static cam_status
537ctlferegister(struct cam_periph *periph, void *arg)
538{
539 struct ctlfe_softc *bus_softc;
540 struct ctlfe_lun_softc *softc;
541 struct cam_sim *sim;
542 union ccb en_lun_ccb;
543 cam_status status;
544 int i;
545
546 softc = (struct ctlfe_lun_softc *)arg;
547 bus_softc = softc->parent_softc;
548 sim = xpt_path_sim(periph->path);
549
550 TAILQ_INIT(&softc->work_queue);
551 softc->periph = periph;
552
553 callout_init_mtx(&softc->dma_callout, sim->mtx, /*flags*/ 0);
554 periph->softc = softc;
555
556 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
557 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
558 en_lun_ccb.cel.grp6_len = 0;
559 en_lun_ccb.cel.grp7_len = 0;
560 en_lun_ccb.cel.enable = 1;
561 xpt_action(&en_lun_ccb);
562 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
563 if (status != CAM_REQ_CMP) {
564 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n",
565 __func__, en_lun_ccb.ccb_h.status);
566 return (status);
567 }
568
569 status = CAM_REQ_CMP;
570
571 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) {
572 union ccb *new_ccb;
573
574 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
575 M_ZERO|M_NOWAIT);
576 if (new_ccb == NULL) {
577 status = CAM_RESRC_UNAVAIL;
578 break;
579 }
580 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
581 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
582 new_ccb->ccb_h.cbfcnp = ctlfedone;
583 xpt_action(new_ccb);
584 softc->atios_sent++;
585 status = new_ccb->ccb_h.status;
586 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
587 free(new_ccb, M_CTLFE);
588 break;
589 }
590 }
591
592 status = cam_periph_acquire(periph);
593 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
594 xpt_print(periph->path, "%s: could not acquire reference "
595 "count, status = %#x\n", __func__, status);
596 return (status);
597 }
598
599 if (i == 0) {
600 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, "
601 "status 0x%x\n", __func__, status);
602 return (CAM_REQ_CMP_ERR);
603 }
604
605 for (i = 0; i < CTLFE_IN_PER_LUN; i++) {
606 union ccb *new_ccb;
607
608 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
609 M_ZERO|M_NOWAIT);
610 if (new_ccb == NULL) {
611 status = CAM_RESRC_UNAVAIL;
612 break;
613 }
614
615 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
616 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
617 new_ccb->ccb_h.cbfcnp = ctlfedone;
618 xpt_action(new_ccb);
619 softc->inots_sent++;
620 status = new_ccb->ccb_h.status;
621 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
622 /*
623 * Note that we don't free the CCB here. If the
624 * status is not CAM_REQ_INPROG, then we're
625 * probably talking to a SIM that says it is
626 * target-capable but doesn't support the
627 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the
628 * older API. In that case, it'll call xpt_done()
629 * on the CCB, and we need to free it in our done
630 * routine as a result.
631 */
632 break;
633 }
634 }
635 if ((i == 0)
636 || (status != CAM_REQ_INPROG)) {
637 xpt_print(periph->path, "%s: could not allocate immediate "
638 "notify CCBs, status 0x%x\n", __func__, status);
639 return (CAM_REQ_CMP_ERR);
640 }
641 return (CAM_REQ_CMP);
642}
643
644static void
645ctlfeoninvalidate(struct cam_periph *periph)
646{
647 union ccb en_lun_ccb;
648 cam_status status;
649 struct ctlfe_lun_softc *softc;
650
651 softc = (struct ctlfe_lun_softc *)periph->softc;
652
653 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
654 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
655 en_lun_ccb.cel.grp6_len = 0;
656 en_lun_ccb.cel.grp7_len = 0;
657 en_lun_ccb.cel.enable = 0;
658 xpt_action(&en_lun_ccb);
659 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
660 if (status != CAM_REQ_CMP) {
661 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n",
662 __func__, en_lun_ccb.ccb_h.status);
663 /*
664 * XXX KDM what do we do now?
665 */
666 }
667 xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju "
668 "INOTs outstanding, %d refs\n", softc->atios_sent -
669 softc->atios_returned, softc->inots_sent -
670 softc->inots_returned, periph->refcount);
671}
672
673static void
674ctlfecleanup(struct cam_periph *periph)
675{
676 struct ctlfe_lun_softc *softc;
677 struct ctlfe_softc *bus_softc;
678
679 xpt_print(periph->path, "%s: Called\n", __func__);
680
681 softc = (struct ctlfe_lun_softc *)periph->softc;
682 bus_softc = softc->parent_softc;
683
684 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links);
685
686 /*
687 * XXX KDM is there anything else that needs to be done here?
688 */
689
690 callout_stop(&softc->dma_callout);
691
692 free(softc, M_CTLFE);
693}
694
695static void
696ctlfestart(struct cam_periph *periph, union ccb *start_ccb)
697{
698 struct ctlfe_lun_softc *softc;
699 struct ccb_hdr *ccb_h;
700
701 softc = (struct ctlfe_lun_softc *)periph->softc;
702
703 softc->ccbs_alloced++;
704
705 start_ccb->ccb_h.ccb_type = CTLFE_CCB_DEFAULT;
706
707 ccb_h = TAILQ_FIRST(&softc->work_queue);
708 if (periph->immediate_priority <= periph->pinfo.priority) {
709 panic("shouldn't get to the CCB waiting case!");
710 start_ccb->ccb_h.ccb_type = CTLFE_CCB_WAITING;
711 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
712 periph_links.sle);
713 periph->immediate_priority = CAM_PRIORITY_NONE;
714 wakeup(&periph->ccb_list);
715 } else if (ccb_h == NULL) {
716 softc->ccbs_freed++;
717 xpt_release_ccb(start_ccb);
718 } else {
719 struct ccb_accept_tio *atio;
720 struct ccb_scsiio *csio;
721 uint8_t *data_ptr;
722 uint32_t dxfer_len;
723 ccb_flags flags;
724 union ctl_io *io;
725 uint8_t scsi_status;
726
727 /* Take the ATIO off the work queue */
728 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe);
729 atio = (struct ccb_accept_tio *)ccb_h;
730 io = (union ctl_io *)ccb_h->io_ptr;
731 csio = &start_ccb->csio;
732
733 flags = atio->ccb_h.flags &
734 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK);
735
736 if ((io == NULL)
737 || (io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) {
738 /*
739 * We're done, send status back.
740 */
741 flags |= CAM_SEND_STATUS;
742 if (io == NULL) {
743 scsi_status = SCSI_STATUS_BUSY;
744 csio->sense_len = 0;
745 } else if ((io->io_hdr.status & CTL_STATUS_MASK) ==
746 CTL_CMD_ABORTED) {
747 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
748
749 /*
750 * If this command was aborted, we don't
751 * need to send status back to the SIM.
752 * Just free the CTIO and ctl_io, and
753 * recycle the ATIO back to the SIM.
754 */
755 xpt_print(periph->path, "%s: aborted "
756 "command 0x%04x discarded\n",
757 __func__, io->scsiio.tag_num);
758 ctl_free_io(io);
759 /*
760 * For a wildcard attachment, commands can
761 * come in with a specific target/lun. Reset
762 * the target and LUN fields back to the
763 * wildcard values before we send them back
764 * down to the SIM. The SIM has a wildcard
765 * LUN enabled, not whatever target/lun
766 * these happened to be.
767 */
768 if (softc->flags & CTLFE_LUN_WILDCARD) {
769 atio->ccb_h.target_id =
770 CAM_TARGET_WILDCARD;
771 atio->ccb_h.target_lun =
772 CAM_LUN_WILDCARD;
773 }
774
775 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
776 cam_release_devq(periph->path,
777 /*relsim_flags*/0,
778 /*reduction*/0,
779 /*timeout*/0,
780 /*getcount_only*/0);
781 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
782 }
783
784 ccb_h = TAILQ_FIRST(&softc->work_queue);
785
786 if (atio->ccb_h.func_code !=
787 XPT_ACCEPT_TARGET_IO) {
788 xpt_print(periph->path, "%s: func_code "
789 "is %#x\n", __func__,
790 atio->ccb_h.func_code);
791 }
792 start_ccb->ccb_h.func_code = XPT_ABORT;
793 start_ccb->cab.abort_ccb = (union ccb *)atio;
794 start_ccb->ccb_h.cbfcnp = ctlfedone;
795
796 /* Tell the SIM that we've aborted this ATIO */
797 xpt_action(start_ccb);
798 softc->ccbs_freed++;
799 xpt_release_ccb(start_ccb);
800
801 /*
802 * Send the ATIO back down to the SIM.
803 */
804 xpt_action((union ccb *)atio);
805 softc->atios_sent++;
806
807 /*
808 * If we still have work to do, ask for
809 * another CCB. Otherwise, deactivate our
810 * callout.
811 */
812 if (ccb_h != NULL)
813 xpt_schedule(periph, /*priority*/ 1);
814 else
815 callout_stop(&softc->dma_callout);
816
817 return;
818 } else {
819 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
820 scsi_status = io->scsiio.scsi_status;
821 csio->sense_len = io->scsiio.sense_len;
822 }
823 data_ptr = NULL;
824 dxfer_len = 0;
825 if (io == NULL) {
826 printf("%s: tag %04x io is NULL\n", __func__,
827 atio->tag_id);
828 } else {
829#ifdef CTLFEDEBUG
830 printf("%s: tag %04x status %x\n", __func__,
831 atio->tag_id, io->io_hdr.status);
832#endif
833 }
834 csio->sglist_cnt = 0;
835 if (csio->sense_len != 0) {
836 csio->sense_data = io->scsiio.sense_data;
837 flags |= CAM_SEND_SENSE;
838 } else if (scsi_status == SCSI_STATUS_CHECK_COND) {
839 xpt_print(periph->path, "%s: check condition "
840 "with no sense\n", __func__);
841 }
842 } else {
843 struct ctlfe_lun_cmd_info *cmd_info;
844
845 /*
846 * Datamove call, we need to setup the S/G list.
847 */
848
849 cmd_info = (struct ctlfe_lun_cmd_info *)
850 io->io_hdr.port_priv;
851
852 KASSERT(sizeof(*cmd_info) < CTL_PORT_PRIV_SIZE,
853 ("%s: sizeof(struct ctlfe_lun_cmd_info) %zd < "
854 "CTL_PORT_PRIV_SIZE %d", __func__,
855 sizeof(*cmd_info), CTL_PORT_PRIV_SIZE));
856 io->io_hdr.flags &= ~CTL_FLAG_DMA_QUEUED;
857
858 /*
859 * Need to zero this, in case it has been used for
860 * a previous datamove for this particular I/O.
861 */
862 bzero(cmd_info, sizeof(*cmd_info));
863 scsi_status = 0;
864
865 /*
866 * Set the direction, relative to the initiator.
867 */
868 flags &= ~CAM_DIR_MASK;
869 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
870 CTL_FLAG_DATA_IN)
871 flags |= CAM_DIR_IN;
872 else
873 flags |= CAM_DIR_OUT;
874
875 csio->cdb_len = atio->cdb_len;
876
877 flags &= ~CAM_DATA_MASK;
878 if (io->scsiio.kern_sg_entries == 0) {
879 /* No S/G list */
880 data_ptr = io->scsiio.kern_data_ptr;
881 dxfer_len = io->scsiio.kern_data_len;
882 csio->sglist_cnt = 0;
883
884 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
885 flags |= CAM_DATA_PADDR;
886 else
887 flags |= CAM_DATA_VADDR;
888 } else if (io->scsiio.kern_sg_entries <=
889 (sizeof(cmd_info->cam_sglist)/
890 sizeof(cmd_info->cam_sglist[0]))) {
891 /*
892 * S/G list with physical or virtual pointers.
893 * Just populate the CAM S/G list with the
894 * pointers.
895 */
896 int i;
897 struct ctl_sg_entry *ctl_sglist;
898 bus_dma_segment_t *cam_sglist;
899
900 ctl_sglist = (struct ctl_sg_entry *)
901 io->scsiio.kern_data_ptr;
902 cam_sglist = cmd_info->cam_sglist;
903
904 for (i = 0; i < io->scsiio.kern_sg_entries;i++){
905 cam_sglist[i].ds_addr =
906 (bus_addr_t)ctl_sglist[i].addr;
907 cam_sglist[i].ds_len =
908 ctl_sglist[i].len;
909 }
910 csio->sglist_cnt = io->scsiio.kern_sg_entries;
911 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
912 flags |= CAM_DATA_SG_PADDR;
913 else
914 flags |= CAM_DATA_SG;
915 data_ptr = (uint8_t *)cam_sglist;
916 dxfer_len = io->scsiio.kern_data_len;
917 } else {
918 /* S/G list with virtual pointers */
919 struct ctl_sg_entry *sglist;
920 int *ti;
921
922 /*
923 * If we have more S/G list pointers than
924 * will fit in the available storage in the
925 * cmd_info structure inside the ctl_io header,
926 * then we need to send down the pointers
927 * one element at a time.
928 */
929
930 sglist = (struct ctl_sg_entry *)
931 io->scsiio.kern_data_ptr;
932 ti = &cmd_info->cur_transfer_index;
933 data_ptr = sglist[*ti].addr;
934 dxfer_len = sglist[*ti].len;
935 csio->sglist_cnt = 0;
936 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
937 flags |= CAM_DATA_PADDR;
938 else
939 flags |= CAM_DATA_VADDR;
940 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
941 (*ti)++;
942 }
943
944 io->scsiio.ext_data_filled += dxfer_len;
945
946 if (io->scsiio.ext_data_filled >
947 io->scsiio.kern_total_len) {
948 xpt_print(periph->path, "%s: tag 0x%04x "
949 "fill len %u > total %u\n",
950 __func__, io->scsiio.tag_num,
951 io->scsiio.ext_data_filled,
952 io->scsiio.kern_total_len);
953 }
954 }
955
956#ifdef CTLFEDEBUG
957 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__,
958 (flags & CAM_SEND_STATUS) ? "done" : "datamove",
959 atio->tag_id, flags, data_ptr, dxfer_len);
960#endif
961
962 /*
963 * Valid combinations:
964 * - CAM_SEND_STATUS, SCATTER_VALID = 0, dxfer_len = 0,
965 * sglist_cnt = 0
966 * - CAM_SEND_STATUS = 0, SCATTER_VALID = 0, dxfer_len != 0,
967 * sglist_cnt = 0
968 * - CAM_SEND_STATUS = 0, SCATTER_VALID, dxfer_len != 0,
969 * sglist_cnt != 0
970 */
971#ifdef CTLFEDEBUG
972 if (((flags & CAM_SEND_STATUS)
973 && (((flags & CAM_SCATTER_VALID) != 0)
974 || (dxfer_len != 0)
975 || (csio->sglist_cnt != 0)))
976 || (((flags & CAM_SEND_STATUS) == 0)
977 && (dxfer_len == 0))
978 || ((flags & CAM_SCATTER_VALID)
979 && (csio->sglist_cnt == 0))
980 || (((flags & CAM_SCATTER_VALID) == 0)
981 && (csio->sglist_cnt != 0))) {
982 printf("%s: tag %04x cdb %02x flags %#x dxfer_len "
983 "%d sg %u\n", __func__, atio->tag_id,
984 atio->cdb_io.cdb_bytes[0], flags, dxfer_len,
985 csio->sglist_cnt);
986 if (io != NULL) {
987 printf("%s: tag %04x io status %#x\n", __func__,
988 atio->tag_id, io->io_hdr.status);
989 } else {
990 printf("%s: tag %04x no associated io\n",
991 __func__, atio->tag_id);
992 }
993 }
994#endif
995 cam_fill_ctio(csio,
996 /*retries*/ 2,
997 ctlfedone,
998 flags,
999 (flags & CAM_TAG_ACTION_VALID) ?
1000 MSG_SIMPLE_Q_TAG : 0,
1001 atio->tag_id,
1002 atio->init_id,
1003 scsi_status,
1004 /*data_ptr*/ data_ptr,
1005 /*dxfer_len*/ dxfer_len,
1006 /*timeout*/ 5 * 1000);
1007 start_ccb->ccb_h.ccb_atio = atio;
1008 if (((flags & CAM_SEND_STATUS) == 0)
1009 && (io != NULL))
1010 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1011
1012 softc->ctios_sent++;
1013
1014 xpt_action(start_ccb);
1015
1016 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1017 cam_release_devq(periph->path,
1018 /*relsim_flags*/0,
1019 /*reduction*/0,
1020 /*timeout*/0,
1021 /*getcount_only*/0);
1022 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
1023 }
1024
1025 ccb_h = TAILQ_FIRST(&softc->work_queue);
1026 }
1027 /*
1028 * If we still have work to do, ask for another CCB. Otherwise,
1029 * deactivate our callout.
1030 */
1031 if (ccb_h != NULL)
1032 xpt_schedule(periph, /*priority*/ 1);
1033 else
1034 callout_stop(&softc->dma_callout);
1035}
1036
1037static void
1038ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb)
1039{
1040 struct ctlfe_lun_softc *softc;
1041
1042 softc = (struct ctlfe_lun_softc *)periph->softc;
1043
1044 switch (ccb->ccb_h.func_code) {
1045 case XPT_ACCEPT_TARGET_IO:
1046 softc->atios_returned++;
1047 break;
1048 case XPT_IMMEDIATE_NOTIFY:
1049 case XPT_NOTIFY_ACKNOWLEDGE:
1050 softc->inots_returned++;
1051 break;
1052 default:
1053 break;
1054 }
1055
1056 free(ccb, M_CTLFE);
1057
1058 KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: "
1059 "atios_returned %ju > atios_sent %ju", __func__,
1060 softc->atios_returned, softc->atios_sent));
1061 KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: "
1062 "inots_returned %ju > inots_sent %ju", __func__,
1063 softc->inots_returned, softc->inots_sent));
1064
1065 /*
1066 * If we have received all of our CCBs, we can release our
1067 * reference on the peripheral driver. It will probably go away
1068 * now.
1069 */
1070 if ((softc->atios_returned == softc->atios_sent)
1071 && (softc->inots_returned == softc->inots_sent)) {
1072 cam_periph_release_locked(periph);
1073 }
1074}
1075
1076static int
1077ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset)
1078{
1079 uint64_t lba;
1080 uint32_t num_blocks, nbc;
1081 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)?
1082 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes;
1083
1084 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */
1085
1086 switch (cmdbyt[0]) {
1087 case READ_6:
1088 case WRITE_6:
1089 {
1090 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt;
1091 lba = scsi_3btoul(cdb->addr);
1092 lba &= 0x1fffff;
1093 num_blocks = cdb->length;
1094 if (num_blocks == 0)
1095 num_blocks = 256;
1096 lba += nbc;
1097 num_blocks -= nbc;
1098 scsi_ulto3b(lba, cdb->addr);
1099 cdb->length = num_blocks;
1100 break;
1101 }
1102 case READ_10:
1103 case WRITE_10:
1104 {
1105 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt;
1106 lba = scsi_4btoul(cdb->addr);
1107 num_blocks = scsi_2btoul(cdb->length);
1108 lba += nbc;
1109 num_blocks -= nbc;
1110 scsi_ulto4b(lba, cdb->addr);
1111 scsi_ulto2b(num_blocks, cdb->length);
1112 break;
1113 }
1114 case READ_12:
1115 case WRITE_12:
1116 {
1117 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt;
1118 lba = scsi_4btoul(cdb->addr);
1119 num_blocks = scsi_4btoul(cdb->length);
1120 lba += nbc;
1121 num_blocks -= nbc;
1122 scsi_ulto4b(lba, cdb->addr);
1123 scsi_ulto4b(num_blocks, cdb->length);
1124 break;
1125 }
1126 case READ_16:
1127 case WRITE_16:
1128 {
1129 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt;
1130 lba = scsi_8btou64(cdb->addr);
1131 num_blocks = scsi_4btoul(cdb->length);
1132 lba += nbc;
1133 num_blocks -= nbc;
1134 scsi_u64to8b(lba, cdb->addr);
1135 scsi_ulto4b(num_blocks, cdb->length);
1136 break;
1137 }
1138 default:
1139 return -1;
1140 }
1141 return (0);
1142}
1143
1144static void
1145ctlfedone(struct cam_periph *periph, union ccb *done_ccb)
1146{
1147 struct ctlfe_lun_softc *softc;
1148 struct ctlfe_softc *bus_softc;
1149 struct ccb_accept_tio *atio = NULL;
1150 union ctl_io *io = NULL;
1151
1152#ifdef CTLFE_DEBUG
1153 printf("%s: entered, func_code = %#x, type = %#lx\n", __func__,
1154 done_ccb->ccb_h.func_code, done_ccb->ccb_h.ccb_type);
1155#endif
1156
1157 softc = (struct ctlfe_lun_softc *)periph->softc;
1158 bus_softc = softc->parent_softc;
1159
1160 if (done_ccb->ccb_h.ccb_type == CTLFE_CCB_WAITING) {
1161 panic("shouldn't get to the CCB waiting case!");
1162 wakeup(&done_ccb->ccb_h.cbfcnp);
1163 return;
1164 }
1165
1166 /*
1167 * If the peripheral is invalid, ATIOs and immediate notify CCBs
1168 * need to be freed. Most of the ATIOs and INOTs that come back
1169 * will be CCBs that are being returned from the SIM as a result of
1170 * our disabling the LUN.
1171 *
1172 * Other CCB types are handled in their respective cases below.
1173 */
1174 if (periph->flags & CAM_PERIPH_INVALID) {
1175 switch (done_ccb->ccb_h.func_code) {
1176 case XPT_ACCEPT_TARGET_IO:
1177 case XPT_IMMEDIATE_NOTIFY:
1178 case XPT_NOTIFY_ACKNOWLEDGE:
1179 ctlfe_free_ccb(periph, done_ccb);
1180 return;
1181 default:
1182 break;
1183 }
1184
1185 }
1186 switch (done_ccb->ccb_h.func_code) {
1187 case XPT_ACCEPT_TARGET_IO: {
1188
1189 atio = &done_ccb->atio;
1190
1191 softc->atios_returned++;
1192
1193 resubmit:
1194 /*
1195 * Allocate a ctl_io, pass it to CTL, and wait for the
1196 * datamove or done.
1197 */
1198 io = ctl_alloc_io(bus_softc->fe.ctl_pool_ref);
1199 if (io == NULL) {
1200 atio->ccb_h.flags &= ~CAM_DIR_MASK;
1201 atio->ccb_h.flags |= CAM_DIR_NONE;
1202
1203 printf("%s: ctl_alloc_io failed!\n", __func__);
1204
1205 /*
1206 * XXX KDM need to set SCSI_STATUS_BUSY, but there
1207 * is no field in the ATIO structure to do that,
1208 * and we aren't able to allocate a ctl_io here.
1209 * What to do?
1210 */
1211 atio->sense_len = 0;
1212 done_ccb->ccb_h.io_ptr = NULL;
1213 TAILQ_INSERT_TAIL(&softc->work_queue, &atio->ccb_h,
1214 periph_links.tqe);
1215 xpt_schedule(periph, /*priority*/ 1);
1216 break;
1217 }
1218 ctl_zero_io(io);
1219
1220 /* Save pointers on both sides */
1221 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb;
1222 done_ccb->ccb_h.io_ptr = io;
1223
1224 /*
1225 * Only SCSI I/O comes down this path, resets, etc. come
1226 * down the immediate notify path below.
1227 */
1228 io->io_hdr.io_type = CTL_IO_SCSI;
1229 io->io_hdr.nexus.initid.id = atio->init_id;
1230 io->io_hdr.nexus.targ_port = bus_softc->fe.targ_port;
1231 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id;
1232 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun;
1233 io->scsiio.tag_num = atio->tag_id;
1234 switch (atio->tag_action) {
1235 case CAM_TAG_ACTION_NONE:
1236 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1237 break;
1238 case MSG_SIMPLE_TASK:
1239 io->scsiio.tag_type = CTL_TAG_SIMPLE;
1240 break;
1241 case MSG_HEAD_OF_QUEUE_TASK:
1242 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
1243 break;
1244 case MSG_ORDERED_TASK:
1245 io->scsiio.tag_type = CTL_TAG_ORDERED;
1246 break;
1247 case MSG_ACA_TASK:
1248 io->scsiio.tag_type = CTL_TAG_ACA;
1249 break;
1250 default:
1251 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1252 printf("%s: unhandled tag type %#x!!\n", __func__,
1253 atio->tag_action);
1254 break;
1255 }
1256 if (atio->cdb_len > sizeof(io->scsiio.cdb)) {
1257 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
1258 __func__, atio->cdb_len, sizeof(io->scsiio.cdb));
1259 }
1260 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb));
1261 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb,
1262 io->scsiio.cdb_len);
1263
1264#ifdef CTLFEDEBUG
1265 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__,
1266 (uintmax_t)io->io_hdr.nexus.initid.id,
1267 io->io_hdr.nexus.targ_port,
1268 (uintmax_t)io->io_hdr.nexus.targ_target.id,
1269 io->io_hdr.nexus.targ_lun,
1270 io->scsiio.tag_num, io->scsiio.cdb[0]);
1271#endif
1272
1273 ctl_queue(io);
1274 break;
1275 }
1276 case XPT_CONT_TARGET_IO: {
1277 int srr = 0;
1278 uint32_t srr_off = 0;
1279
1280 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio;
1281 io = (union ctl_io *)atio->ccb_h.io_ptr;
1282
1283 softc->ctios_returned++;
1284#ifdef CTLFEDEBUG
1285 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n",
1286 __func__, atio->tag_id, done_ccb->ccb_h.flags);
1287#endif
1288 /*
1289 * Handle SRR case were the data pointer is pushed back hack
1290 */
1291 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV
1292 && done_ccb->csio.msg_ptr != NULL
1293 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED
1294 && done_ccb->csio.msg_ptr[1] == 5
1295 && done_ccb->csio.msg_ptr[2] == 0) {
1296 srr = 1;
1297 srr_off =
1298 (done_ccb->csio.msg_ptr[3] << 24)
1299 | (done_ccb->csio.msg_ptr[4] << 16)
1300 | (done_ccb->csio.msg_ptr[5] << 8)
1301 | (done_ccb->csio.msg_ptr[6]);
1302 }
1303
1304 if (srr && (done_ccb->ccb_h.flags & CAM_SEND_STATUS)) {
1305 /*
1306 * If status was being sent, the back end data is now
1307 * history. Hack it up and resubmit a new command with
1308 * the CDB adjusted. If the SIM does the right thing,
1309 * all of the resid math should work.
1310 */
1311 softc->ccbs_freed++;
1312 xpt_release_ccb(done_ccb);
1313 ctl_free_io(io);
1314 if (ctlfe_adjust_cdb(atio, srr_off) == 0) {
1315 done_ccb = (union ccb *)atio;
1316 goto resubmit;
1317 }
1318 /*
1319 * Fall through to doom....
1320 */
1321 } else if (srr) {
1322 /*
1323 * If we have an srr and we're still sending data, we
1324 * should be able to adjust offsets and cycle again.
1325 */
1326 io->scsiio.kern_rel_offset =
1327 io->scsiio.ext_data_filled = srr_off;
1328 io->scsiio.ext_data_len = io->scsiio.kern_total_len -
1329 io->scsiio.kern_rel_offset;
1330 softc->ccbs_freed++;
1331 io->scsiio.io_hdr.status = CTL_STATUS_NONE;
1332 xpt_release_ccb(done_ccb);
1333 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h,
1334 periph_links.tqe);
1335 xpt_schedule(periph, /*priority*/ 1);
1336 return;
1337 }
1338
1339 /*
1340 * If we were sending status back to the initiator, free up
1341 * resources. If we were doing a datamove, call the
1342 * datamove done routine.
1343 */
1344 if (done_ccb->ccb_h.flags & CAM_SEND_STATUS) {
1345 softc->ccbs_freed++;
1346 xpt_release_ccb(done_ccb);
1347 ctl_free_io(io);
1348 /*
1349 * For a wildcard attachment, commands can come in
1350 * with a specific target/lun. Reset the target
1351 * and LUN fields back to the wildcard values before
1352 * we send them back down to the SIM. The SIM has
1353 * a wildcard LUN enabled, not whatever target/lun
1354 * these happened to be.
1355 */
1356 if (softc->flags & CTLFE_LUN_WILDCARD) {
1357 atio->ccb_h.target_id = CAM_TARGET_WILDCARD;
1358 atio->ccb_h.target_lun = CAM_LUN_WILDCARD;
1359 }
1360 if (periph->flags & CAM_PERIPH_INVALID) {
1361 ctlfe_free_ccb(periph, (union ccb *)atio);
1362 return;
1363 } else {
1364 xpt_action((union ccb *)atio);
1365 softc->atios_sent++;
1366 }
1367 } else {
1368 struct ctlfe_lun_cmd_info *cmd_info;
1369 struct ccb_scsiio *csio;
1370
1371 csio = &done_ccb->csio;
1372 cmd_info = (struct ctlfe_lun_cmd_info *)
1373 io->io_hdr.port_priv;
1374
1375 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG;
1376
1377 io->scsiio.ext_data_len += csio->dxfer_len;
1378 if (io->scsiio.ext_data_len >
1379 io->scsiio.kern_total_len) {
1380 xpt_print(periph->path, "%s: tag 0x%04x "
1381 "done len %u > total %u sent %u\n",
1382 __func__, io->scsiio.tag_num,
1383 io->scsiio.ext_data_len,
1384 io->scsiio.kern_total_len,
1385 io->scsiio.ext_data_filled);
1386 }
1387 /*
1388 * Translate CAM status to CTL status. Success
1389 * does not change the overall, ctl_io status. In
1390 * that case we just set port_status to 0. If we
1391 * have a failure, though, set a data phase error
1392 * for the overall ctl_io.
1393 */
1394 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) {
1395 case CAM_REQ_CMP:
1396 io->io_hdr.port_status = 0;
1397 break;
1398 default:
1399 /*
1400 * XXX KDM we probably need to figure out a
1401 * standard set of errors that the SIM
1402 * drivers should return in the event of a
1403 * data transfer failure. A data phase
1404 * error will at least point the user to a
1405 * data transfer error of some sort.
1406 * Hopefully the SIM printed out some
1407 * additional information to give the user
1408 * a clue what happened.
1409 */
1410 io->io_hdr.port_status = 0xbad1;
1411 ctl_set_data_phase_error(&io->scsiio);
1412 /*
1413 * XXX KDM figure out residual.
1414 */
1415 break;
1416 }
1417 /*
1418 * If we had to break this S/G list into multiple
1419 * pieces, figure out where we are in the list, and
1420 * continue sending pieces if necessary.
1421 */
1422 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE)
1423 && (io->io_hdr.port_status == 0)
1424 && (cmd_info->cur_transfer_index <
1425 io->scsiio.kern_sg_entries)) {
1426 struct ctl_sg_entry *sglist;
1427 ccb_flags flags;
1428 uint8_t scsi_status;
1429 uint8_t *data_ptr;
1430 uint32_t dxfer_len;
1431 int *ti;
1432
1433 sglist = (struct ctl_sg_entry *)
1434 io->scsiio.kern_data_ptr;
1435 ti = &cmd_info->cur_transfer_index;
1436 flags = atio->ccb_h.flags &
1437 (CAM_DIS_DISCONNECT|
1438 CAM_TAG_ACTION_VALID|
1439 CAM_DIR_MASK);
1440
1441 /*
1442 * Set the direction, relative to the initiator.
1443 */
1444 flags &= ~CAM_DIR_MASK;
1445 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
1446 CTL_FLAG_DATA_IN)
1447 flags |= CAM_DIR_IN;
1448 else
1449 flags |= CAM_DIR_OUT;
1450
1451 data_ptr = sglist[*ti].addr;
1452 dxfer_len = sglist[*ti].len;
1453 (*ti)++;
1454
1455 scsi_status = 0;
1456
1457 if (((flags & CAM_SEND_STATUS) == 0)
1458 && (dxfer_len == 0)) {
1459 printf("%s: tag %04x no status or "
1460 "len cdb = %02x\n", __func__,
1461 atio->tag_id,
1462 atio->cdb_io.cdb_bytes[0]);
1463 printf("%s: tag %04x io status %#x\n",
1464 __func__, atio->tag_id,
1465 io->io_hdr.status);
1466 }
1467
1468 cam_fill_ctio(csio,
1469 /*retries*/ 2,
1470 ctlfedone,
1471 flags,
1472 (flags & CAM_TAG_ACTION_VALID) ?
1473 MSG_SIMPLE_Q_TAG : 0,
1474 atio->tag_id,
1475 atio->init_id,
1476 scsi_status,
1477 /*data_ptr*/ data_ptr,
1478 /*dxfer_len*/ dxfer_len,
1479 /*timeout*/ 5 * 1000);
1480
1481 csio->resid = 0;
1482 csio->ccb_h.ccb_atio = atio;
1483 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1484 softc->ctios_sent++;
1485 xpt_action((union ccb *)csio);
1486 } else {
1487 /*
1488 * Release the CTIO. The ATIO will be sent back
1489 * down to the SIM once we send status.
1490 */
1491 softc->ccbs_freed++;
1492 xpt_release_ccb(done_ccb);
1493
1494 /* Call the backend move done callback */
1495 io->scsiio.be_move_done(io);
1496 }
1497 }
1498 break;
1499 }
1500 case XPT_IMMEDIATE_NOTIFY: {
1501 union ctl_io *io;
1502 struct ccb_immediate_notify *inot;
1503 cam_status status;
1504 int frozen;
1505
1506 inot = &done_ccb->cin1;
1507
1508 softc->inots_returned++;
1509
1510 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1511
1512 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x "
1513 "seq %#x\n", __func__, inot->ccb_h.status,
1514 inot->tag_id, inot->seq_id);
1515
1516 io = ctl_alloc_io(bus_softc->fe.ctl_pool_ref);
1517 if (io != NULL) {
1518 int send_ctl_io;
1519
1520 send_ctl_io = 1;
1521
1522 ctl_zero_io(io);
1523 io->io_hdr.io_type = CTL_IO_TASK;
1524 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb;
1525 inot->ccb_h.io_ptr = io;
1526 io->io_hdr.nexus.initid.id = inot->initiator_id;
1527 io->io_hdr.nexus.targ_port = bus_softc->fe.targ_port;
1528 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id;
1529 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun;
1530 /* XXX KDM should this be the tag_id? */
1531 io->taskio.tag_num = inot->seq_id;
1532
1533 status = inot->ccb_h.status & CAM_STATUS_MASK;
1534 switch (status) {
1535 case CAM_SCSI_BUS_RESET:
1536 io->taskio.task_action = CTL_TASK_BUS_RESET;
1537 break;
1538 case CAM_BDR_SENT:
1539 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1540 break;
1541 case CAM_MESSAGE_RECV:
1542 switch (inot->arg) {
1543 case MSG_ABORT_TASK_SET:
1544 /*
1545 * XXX KDM this isn't currently
1546 * supported by CTL. It ends up
1547 * being a no-op.
1548 */
1549 io->taskio.task_action =
1550 CTL_TASK_ABORT_TASK_SET;
1551 break;
1552 case MSG_TARGET_RESET:
1553 io->taskio.task_action =
1554 CTL_TASK_TARGET_RESET;
1555 break;
1556 case MSG_ABORT_TASK:
1557 io->taskio.task_action =
1558 CTL_TASK_ABORT_TASK;
1559 break;
1560 case MSG_LOGICAL_UNIT_RESET:
1561 io->taskio.task_action =
1562 CTL_TASK_LUN_RESET;
1563 break;
1564 case MSG_CLEAR_TASK_SET:
1565 /*
1566 * XXX KDM this isn't currently
1567 * supported by CTL. It ends up
1568 * being a no-op.
1569 */
1570 io->taskio.task_action =
1571 CTL_TASK_CLEAR_TASK_SET;
1572 break;
1573 case MSG_CLEAR_ACA:
1574 io->taskio.task_action =
1575 CTL_TASK_CLEAR_ACA;
1576 break;
1577 case MSG_NOOP:
1578 send_ctl_io = 0;
1579 break;
1580 default:
1581 xpt_print(periph->path, "%s: "
1582 "unsupported message 0x%x\n",
1583 __func__, inot->arg);
1584 send_ctl_io = 0;
1585 break;
1586 }
1587 break;
1588 case CAM_REQ_ABORTED:
1589 /*
1590 * This request was sent back by the driver.
1591 * XXX KDM what do we do here?
1592 */
1593 send_ctl_io = 0;
1594 break;
1595 case CAM_REQ_INVALID:
1596 case CAM_PROVIDE_FAIL:
1597 default:
1598 /*
1599 * We should only get here if we're talking
1600 * to a talking to a SIM that is target
1601 * capable but supports the old API. In
1602 * that case, we need to just free the CCB.
1603 * If we actually send a notify acknowledge,
1604 * it will send that back with an error as
1605 * well.
1606 */
1607
1608 if ((status != CAM_REQ_INVALID)
1609 && (status != CAM_PROVIDE_FAIL))
1610 xpt_print(periph->path, "%s: "
1611 "unsupported CAM status "
1612 "0x%x\n", __func__, status);
1613
1614 ctl_free_io(io);
1615 ctlfe_free_ccb(periph, done_ccb);
1616
1617 return;
1618 }
1619 if (send_ctl_io != 0) {
1620 ctl_queue(io);
1621 } else {
1622 ctl_free_io(io);
1623 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1624 done_ccb->ccb_h.func_code =
1625 XPT_NOTIFY_ACKNOWLEDGE;
1626 xpt_action(done_ccb);
1627 }
1628 } else {
1629 xpt_print(periph->path, "%s: could not allocate "
1630 "ctl_io for immediate notify!\n", __func__);
1631 /* requeue this to the adapter */
1632 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1633 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1634 xpt_action(done_ccb);
1635 }
1636
1637 if (frozen != 0) {
1638 cam_release_devq(periph->path,
1639 /*relsim_flags*/ 0,
1640 /*opening reduction*/ 0,
1641 /*timeout*/ 0,
1642 /*getcount_only*/ 0);
1643 }
1644 break;
1645 }
1646 case XPT_NOTIFY_ACKNOWLEDGE:
1647 /*
1648 * Queue this back down to the SIM as an immediate notify.
1649 */
1650 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
1651 xpt_action(done_ccb);
1652 softc->inots_sent++;
1653 break;
1654 case XPT_ABORT:
1655 /*
1656 * XPT_ABORT is an immediate CCB, we shouldn't get here.
1657 */
1658 panic("%s: XPT_ABORT CCB returned!", __func__);
1659 break;
1660 case XPT_SET_SIM_KNOB:
1661 case XPT_GET_SIM_KNOB:
1662 break;
1663 default:
1664 panic("%s: unexpected CCB type %#x", __func__,
1665 done_ccb->ccb_h.func_code);
1666 break;
1667 }
1668}
1669
1670static void
1671ctlfe_onoffline(void *arg, int online)
1672{
1673 struct ctlfe_softc *bus_softc;
1674 union ccb *ccb;
1675 cam_status status;
1676 struct cam_path *path;
1677 struct cam_sim *sim;
1678 int set_wwnn;
1679
1680 bus_softc = (struct ctlfe_softc *)arg;
1681
1682 set_wwnn = 0;
1683
1684 sim = bus_softc->sim;
1685
1686 mtx_assert(sim->mtx, MA_OWNED);
1687
1688 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id,
1689 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1690 if (status != CAM_REQ_CMP) {
1691 printf("%s: unable to create path!\n", __func__);
1692 return;
1693 }
1694 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, M_NOWAIT | M_ZERO);
1695 if (ccb == NULL) {
1696 printf("%s: unable to malloc CCB!\n", __func__);
1697 xpt_free_path(path);
1698 return;
1699 }
1700 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
1701
1702 /*
1703 * Copan WWN format:
1704 *
1705 * Bits 63-60: 0x5 NAA, IEEE registered name
1706 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan
1707 * Bits 35-12: Copan SSN (Sequential Serial Number)
1708 * Bits 11-8: Type of port:
1709 * 1 == N-Port
1710 * 2 == F-Port
1711 * 3 == NL-Port
1712 * Bits 7-0: 0 == Node Name, >0 == Port Number
1713 */
1714
1715 if (online != 0) {
1716
1717 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB;
1718
1719
1720 xpt_action(ccb);
1721
1722
1723 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){
1724#ifdef RANDOM_WWNN
1725 uint64_t random_bits;
1726#endif
1727
1728 printf("%s: %s current WWNN %#jx\n", __func__,
1729 bus_softc->port_name,
1730 ccb->knob.xport_specific.fc.wwnn);
1731 printf("%s: %s current WWPN %#jx\n", __func__,
1732 bus_softc->port_name,
1733 ccb->knob.xport_specific.fc.wwpn);
1734
1735#ifdef RANDOM_WWNN
1736 arc4rand(&random_bits, sizeof(random_bits), 0);
1737#endif
1738
1739 /*
1740 * XXX KDM this is a bit of a kludge for now. We
1741 * take the current WWNN/WWPN from the card, and
1742 * replace the company identifier and the NL-Port
1743 * indicator and the port number (for the WWPN).
1744 * This should be replaced later with ddb_GetWWNN,
1745 * or possibly a more centralized scheme. (It
1746 * would be nice to have the WWNN/WWPN for each
1747 * port stored in the ctl_frontend structure.)
1748 */
1749#ifdef RANDOM_WWNN
1750 ccb->knob.xport_specific.fc.wwnn =
1751 (random_bits &
1752 0x0000000fffffff00ULL) |
1753 /* Company ID */ 0x5000ED5000000000ULL |
1754 /* NL-Port */ 0x0300;
1755 ccb->knob.xport_specific.fc.wwpn =
1756 (random_bits &
1757 0x0000000fffffff00ULL) |
1758 /* Company ID */ 0x5000ED5000000000ULL |
1759 /* NL-Port */ 0x3000 |
1760 /* Port Num */ (bus_softc->fe.targ_port & 0xff);
1761
1762 /*
1763 * This is a bit of an API break/reversal, but if
1764 * we're doing the random WWNN that's a little
1765 * different anyway. So record what we're actually
1766 * using with the frontend code so it's reported
1767 * accurately.
1768 */
1769 bus_softc->fe.wwnn =
1770 ccb->knob.xport_specific.fc.wwnn;
1771 bus_softc->fe.wwpn =
1772 ccb->knob.xport_specific.fc.wwpn;
1773 set_wwnn = 1;
1774#else /* RANDOM_WWNN */
1775 /*
1776 * If the user has specified a WWNN/WWPN, send them
1777 * down to the SIM. Otherwise, record what the SIM
1778 * has reported.
1779 */
1780 if ((bus_softc->fe.wwnn != 0)
1781 && (bus_softc->fe.wwpn != 0)) {
1782 ccb->knob.xport_specific.fc.wwnn =
1783 bus_softc->fe.wwnn;
1784 ccb->knob.xport_specific.fc.wwpn =
1785 bus_softc->fe.wwpn;
1786 set_wwnn = 1;
1787 } else {
1788 bus_softc->fe.wwnn =
1789 ccb->knob.xport_specific.fc.wwnn;
1790 bus_softc->fe.wwpn =
1791 ccb->knob.xport_specific.fc.wwpn;
1792 }
1793#endif /* RANDOM_WWNN */
1794
1795
1796 if (set_wwnn != 0) {
1797 printf("%s: %s new WWNN %#jx\n", __func__,
1798 bus_softc->port_name,
1799 ccb->knob.xport_specific.fc.wwnn);
1800 printf("%s: %s new WWPN %#jx\n", __func__,
1801 bus_softc->port_name,
1802 ccb->knob.xport_specific.fc.wwpn);
1803 }
1804 } else {
1805 printf("%s: %s has no valid WWNN/WWPN\n", __func__,
1806 bus_softc->port_name);
1807 }
1808 }
1809 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1810 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
1811 if (set_wwnn != 0)
1812 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS;
1813
1814 if (online != 0)
1815 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET;
1816 else
1817 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE;
1818
1819 xpt_action(ccb);
1820
1821 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1822 printf("%s: SIM %s (path id %d) target %s failed with "
1823 "status %#x\n",
1824 __func__, bus_softc->port_name, bus_softc->path_id,
1825 (online != 0) ? "enable" : "disable",
1826 ccb->ccb_h.status);
1827 } else {
1828 printf("%s: SIM %s (path id %d) target %s succeeded\n",
1829 __func__, bus_softc->port_name, bus_softc->path_id,
1830 (online != 0) ? "enable" : "disable");
1831 }
1832
1833 xpt_free_path(path);
1834
1835 free(ccb, M_TEMP);
1836
1837 return;
1838}
1839
1840static void
1841ctlfe_online(void *arg)
1842{
1843 struct ctlfe_softc *bus_softc;
1844 struct cam_path *path;
1845 cam_status status;
1846 struct ctlfe_lun_softc *lun_softc;
1847 struct cam_sim *sim;
1848
1849 bus_softc = (struct ctlfe_softc *)arg;
1850 sim = bus_softc->sim;
1851
1852 CAM_SIM_LOCK(sim);
1853
1854 /*
1855 * Create the wildcard LUN before bringing the port online.
1856 */
1857 status = xpt_create_path(&path, /*periph*/ NULL,
1858 bus_softc->path_id, CAM_TARGET_WILDCARD,
1859 CAM_LUN_WILDCARD);
1860 if (status != CAM_REQ_CMP) {
1861 printf("%s: unable to create path for wildcard periph\n",
1862 __func__);
1863 CAM_SIM_UNLOCK(sim);
1864 return;
1865 }
1866
1867 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE,
1868 M_NOWAIT | M_ZERO);
1869 if (lun_softc == NULL) {
1870 xpt_print(path, "%s: unable to allocate softc for "
1871 "wildcard periph\n", __func__);
1872 xpt_free_path(path);
1873 CAM_SIM_UNLOCK(sim);
1874 return;
1875 }
1876
1877 lun_softc->parent_softc = bus_softc;
1878 lun_softc->flags |= CTLFE_LUN_WILDCARD;
1879
1880 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, lun_softc, links);
1881
1882
1883 status = cam_periph_alloc(ctlferegister,
1884 ctlfeoninvalidate,
1885 ctlfecleanup,
1886 ctlfestart,
1887 "ctl",
1888 CAM_PERIPH_BIO,
1889 path,
1890 ctlfeasync,
1891 0,
1892 lun_softc);
1893
1894 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1895 const struct cam_status_entry *entry;
1896
1897 entry = cam_fetch_status_entry(status);
1898
1899 printf("%s: CAM error %s (%#x) returned from "
1900 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1901 entry->status_text : "Unknown", status);
1902 }
1903
1904 xpt_free_path(path);
1905
1906 ctlfe_onoffline(arg, /*online*/ 1);
1907
1908 CAM_SIM_UNLOCK(sim);
1909}
1910
1911static void
1912ctlfe_offline(void *arg)
1913{
1914 struct ctlfe_softc *bus_softc;
1915 struct cam_path *path;
1916 cam_status status;
1917 struct cam_periph *periph;
1918 struct cam_sim *sim;
1919
1920 bus_softc = (struct ctlfe_softc *)arg;
1921 sim = bus_softc->sim;
1922
1923 CAM_SIM_LOCK(sim);
1924
1925 ctlfe_onoffline(arg, /*online*/ 0);
1926
1927 /*
1928 * Disable the wildcard LUN for this port now that we have taken
1929 * the port offline.
1930 */
1931 status = xpt_create_path(&path, /*periph*/ NULL,
1932 bus_softc->path_id, CAM_TARGET_WILDCARD,
1933 CAM_LUN_WILDCARD);
1934 if (status != CAM_REQ_CMP) {
1935 CAM_SIM_UNLOCK(sim);
1936 printf("%s: unable to create path for wildcard periph\n",
1937 __func__);
1938 return;
1939 }
1940
1941
1942 if ((periph = cam_periph_find(path, "ctl")) != NULL)
1943 cam_periph_invalidate(periph);
1944
1945 xpt_free_path(path);
1946
1947 CAM_SIM_UNLOCK(sim);
1948}
1949
1950static int
1951ctlfe_targ_enable(void *arg, struct ctl_id targ_id)
1952{
1953 return (0);
1954}
1955
1956static int
1957ctlfe_targ_disable(void *arg, struct ctl_id targ_id)
1958{
1959 return (0);
1960}
1961
1962/*
1963 * This will get called to enable a LUN on every bus that is attached to
1964 * CTL. So we only need to create a path/periph for this particular bus.
1965 */
1966static int
1967ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id)
1968{
1969 struct ctlfe_softc *bus_softc;
1970 struct ctlfe_lun_softc *softc;
1971 struct cam_path *path;
1972 struct cam_periph *periph;
1973 struct cam_sim *sim;
1974 cam_status status;
1975
1976 bus_softc = (struct ctlfe_softc *)arg;
1977 sim = bus_softc->sim;
1978
1979 status = xpt_create_path_unlocked(&path, /*periph*/ NULL,
1980 bus_softc->path_id,
1981 targ_id.id, lun_id);
1982 /* XXX KDM need some way to return status to CTL here? */
1983 if (status != CAM_REQ_CMP) {
1984 printf("%s: could not create path, status %#x\n", __func__,
1985 status);
1986 return (1);
1987 }
1988
1989 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO);
1990 CAM_SIM_LOCK(sim);
1991 periph = cam_periph_find(path, "ctl");
1992 if (periph != NULL) {
1993 /* We've already got a periph, no need to alloc a new one. */
1994 xpt_free_path(path);
1995 free(softc, M_CTLFE);
1996 CAM_SIM_UNLOCK(sim);
1997 return (0);
1998 }
1999
2000 softc->parent_softc = bus_softc;
2001 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links);
2002
2003 status = cam_periph_alloc(ctlferegister,
2004 ctlfeoninvalidate,
2005 ctlfecleanup,
2006 ctlfestart,
2007 "ctl",
2008 CAM_PERIPH_BIO,
2009 path,
2010 ctlfeasync,
2011 0,
2012 softc);
2013
2014 xpt_free_path(path);
2015
2016 CAM_SIM_UNLOCK(sim);
2017
2018 return (0);
2019}
2020
2021/*
2022 * This will get called when the user removes a LUN to disable that LUN
2023 * on every bus that is attached to CTL.
2024 */
2025static int
2026ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id)
2027{
2028 struct ctlfe_softc *softc;
2029 struct ctlfe_lun_softc *lun_softc;
2030 struct cam_sim *sim;
2031
2032 softc = (struct ctlfe_softc *)arg;
2033 sim = softc->sim;
2034
2035 CAM_SIM_LOCK(sim);
2036 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) {
2037 struct cam_path *path;
2038
2039 path = lun_softc->periph->path;
2040
2041 if ((xpt_path_target_id(path) == targ_id.id)
2042 && (xpt_path_lun_id(path) == lun_id)) {
2043 break;
2044 }
2045 }
2046 if (lun_softc == NULL) {
2047 CAM_SIM_UNLOCK(sim);
2048 printf("%s: can't find target %d lun %d\n", __func__,
2049 targ_id.id, lun_id);
2050 return (1);
2051 }
2052
2053 cam_periph_invalidate(lun_softc->periph);
2054
2055 CAM_SIM_UNLOCK(sim);
2056
2057 return (0);
2058}
2059
2060static void
2061ctlfe_dump_sim(struct cam_sim *sim)
2062{
2063
2064 printf("%s%d: max tagged openings: %d, max dev openings: %d\n",
2065 sim->sim_name, sim->unit_number,
2066 sim->max_tagged_dev_openings, sim->max_dev_openings);
2067 printf("%s%d: max_ccbs: %u, ccb_count: %u\n",
2068 sim->sim_name, sim->unit_number,
2069 sim->max_ccbs, sim->ccb_count);
2070 printf("%s%d: ccb_freeq is %sempty\n",
2071 sim->sim_name, sim->unit_number,
2072 (SLIST_FIRST(&sim->ccb_freeq) == NULL) ? "" : "NOT ");
2073 printf("\n");
2074}
2075
2076/*
2077 * Assumes that the SIM lock is held.
2078 */
2079static void
2080ctlfe_dump_queue(struct ctlfe_lun_softc *softc)
2081{
2082 struct ccb_hdr *hdr;
2083 struct cam_periph *periph;
2084 int num_items;
2085
2086 periph = softc->periph;
2087 num_items = 0;
2088
2089 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) {
2090 union ctl_io *io;
2091
2092 io = hdr->io_ptr;
2093
2094 num_items++;
2095
2096 /*
2097 * This can happen when we get an ATIO but can't allocate
2098 * a ctl_io. See the XPT_ACCEPT_TARGET_IO case in ctlfedone().
2099 */
2100 if (io == NULL) {
2101 struct ccb_scsiio *csio;
2102
2103 csio = (struct ccb_scsiio *)hdr;
2104
2105 xpt_print(periph->path, "CCB %#x ctl_io allocation "
2106 "failed\n", csio->tag_id);
2107 continue;
2108 }
2109
2110 /*
2111 * Only regular SCSI I/O is put on the work
2112 * queue, so we can print sense here. There may be no
2113 * sense if it's no the queue for a DMA, but this serves to
2114 * print out the CCB as well.
2115 *
2116 * XXX KDM switch this over to scsi_sense_print() when
2117 * CTL is merged in with CAM.
2118 */
2119 ctl_io_error_print(io, NULL);
2120
2121 /*
2122 * We're sending status back to the
2123 * initiator, so we're on the queue waiting
2124 * for a CTIO to do that.
2125 */
2126 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
2127 continue;
2128
2129 /*
2130 * Otherwise, we're on the queue waiting to
2131 * do a data transfer.
2132 */
2133 xpt_print(periph->path, "Total %u, Current %u, Resid %u\n",
2134 io->scsiio.kern_total_len, io->scsiio.kern_data_len,
2135 io->scsiio.kern_data_resid);
2136 }
2137
2138 xpt_print(periph->path, "%d requests total waiting for CCBs\n",
2139 num_items);
2140 xpt_print(periph->path, "%ju CCBs oustanding (%ju allocated, %ju "
2141 "freed)\n", (uintmax_t)(softc->ccbs_alloced -
2142 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced,
2143 (uintmax_t)softc->ccbs_freed);
2144 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju "
2145 "returned\n", (uintmax_t)(softc->ctios_sent -
2146 softc->ctios_returned), softc->ctios_sent,
2147 softc->ctios_returned);
2148}
2149
2150/*
2151 * This function is called when we fail to get a CCB for a DMA or status return
2152 * to the initiator within the specified time period.
2153 *
2154 * The callout code should insure that we hold the sim mutex here.
2155 */
2156static void
2157ctlfe_dma_timeout(void *arg)
2158{
2159 struct ctlfe_lun_softc *softc;
2160 struct cam_periph *periph;
2161 struct cam_sim *sim;
2162 int num_queued;
2163
2164 softc = (struct ctlfe_lun_softc *)arg;
2165 periph = softc->periph;
2166 sim = xpt_path_sim(periph->path);
2167 num_queued = 0;
2168
2169 /*
2170 * Nothing to do...
2171 */
2172 if (TAILQ_FIRST(&softc->work_queue) == NULL) {
2173 xpt_print(periph->path, "TIMEOUT triggered after %d "
2174 "seconds, but nothing on work queue??\n",
2175 CTLFE_DMA_TIMEOUT);
2176 return;
2177 }
2178
2179 xpt_print(periph->path, "TIMEOUT (%d seconds) waiting for DMA to "
2180 "start\n", CTLFE_DMA_TIMEOUT);
2181
2182 ctlfe_dump_queue(softc);
2183
2184 ctlfe_dump_sim(sim);
2185
2186 xpt_print(periph->path, "calling xpt_schedule() to attempt to "
2187 "unstick our queue\n");
2188
2189 xpt_schedule(periph, /*priority*/ 1);
2190
2191 xpt_print(periph->path, "xpt_schedule() call complete\n");
2192}
2193
2194/*
2195 * Datamove/done routine called by CTL. Put ourselves on the queue to
2196 * receive a CCB from CAM so we can queue the continue I/O request down
2197 * to the adapter.
2198 */
2199static void
2200ctlfe_datamove_done(union ctl_io *io)
2201{
2202 union ccb *ccb;
2203 struct cam_sim *sim;
2204 struct cam_periph *periph;
2205 struct ctlfe_lun_softc *softc;
2206
2207 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
2208
2209 sim = xpt_path_sim(ccb->ccb_h.path);
2210
2211 CAM_SIM_LOCK(sim);
2212
2213 periph = xpt_path_periph(ccb->ccb_h.path);
2214
2215 softc = (struct ctlfe_lun_softc *)periph->softc;
2216
2217 if (io->io_hdr.io_type == CTL_IO_TASK) {
2218 /*
2219 * Task management commands don't require any further
2220 * communication back to the adapter. Requeue the CCB
2221 * to the adapter, and free the CTL I/O.
2222 */
2223 xpt_print(ccb->ccb_h.path, "%s: returning task I/O "
2224 "tag %#x seq %#x\n", __func__,
2225 ccb->cin1.tag_id, ccb->cin1.seq_id);
2226 /*
2227 * Send the notify acknowledge down to the SIM, to let it
2228 * know we processed the task management command.
2229 */
2230 ccb->ccb_h.status = CAM_REQ_INPROG;
2231 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
2232 xpt_action(ccb);
2233 ctl_free_io(io);
2234 } else {
2235 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
2236 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
2237 else
2238 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
2239
2240 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
2241 periph_links.tqe);
2242
2243 /*
2244 * Reset the timeout for our latest active DMA.
2245 */
2246 callout_reset(&softc->dma_callout,
2247 CTLFE_DMA_TIMEOUT * hz,
2248 ctlfe_dma_timeout, softc);
2249 /*
2250 * Ask for the CAM transport layer to send us a CCB to do
2251 * the DMA or send status, unless ctlfe_dma_enabled is set
2252 * to 0.
2253 */
2254 if (ctlfe_dma_enabled != 0)
2255 xpt_schedule(periph, /*priority*/ 1);
2256 }
2257
2258 CAM_SIM_UNLOCK(sim);
2259}
2260
2261static void
2262ctlfe_dump(void)
2263{
2264 struct ctlfe_softc *bus_softc;
2265
2266 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) {
2267 struct ctlfe_lun_softc *lun_softc;
2268
2269 ctlfe_dump_sim(bus_softc->sim);
2270
2271 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links) {
2272 ctlfe_dump_queue(lun_softc);
2273 }
2274 }
2275}