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 275032 2014-11-25 12:22:29Z 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
75struct ctlfe_softc {
76 struct ctl_port port;
77 path_id_t path_id;
78 u_int maxio;
79 struct cam_sim *sim;
80 char port_name[DEV_IDLEN];
81 struct mtx lun_softc_mtx;
82 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list;
83 STAILQ_ENTRY(ctlfe_softc) links;
84};
85
86STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list;
87struct mtx ctlfe_list_mtx;
88static char ctlfe_mtx_desc[] = "ctlfelist";
89#ifdef CTLFE_INIT_ENABLE
90static int ctlfe_max_targets = 1;
91static int ctlfe_num_targets = 0;
92#endif
93
94typedef enum {
95 CTLFE_LUN_NONE = 0x00,
96 CTLFE_LUN_WILDCARD = 0x01
97} ctlfe_lun_flags;
98
99struct ctlfe_lun_softc {
100 struct ctlfe_softc *parent_softc;
101 struct cam_periph *periph;
102 ctlfe_lun_flags flags;
103 uint64_t ccbs_alloced;
104 uint64_t ccbs_freed;
105 uint64_t ctios_sent;
106 uint64_t ctios_returned;
107 uint64_t atios_sent;
108 uint64_t atios_returned;
109 uint64_t inots_sent;
110 uint64_t inots_returned;
111 /* bus_dma_tag_t dma_tag; */
112 TAILQ_HEAD(, ccb_hdr) work_queue;
113 STAILQ_ENTRY(ctlfe_lun_softc) links;
114};
115
116typedef enum {
117 CTLFE_CMD_NONE = 0x00,
118 CTLFE_CMD_PIECEWISE = 0x01
119} ctlfe_cmd_flags;
120
121/*
122 * The size limit of this structure is CTL_PORT_PRIV_SIZE, from ctl_io.h.
123 * Currently that is 600 bytes.
124 */
125struct ctlfe_lun_cmd_info {
126 int cur_transfer_index;
127 size_t cur_transfer_off;
128 ctlfe_cmd_flags flags;
129 /*
130 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16
131 * bytes on amd64. So with 32 elements, this is 256 bytes on
132 * i386 and 512 bytes on amd64.
133 */
134#define CTLFE_MAX_SEGS 32
135 bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS];
136};
137CTASSERT(sizeof(struct ctlfe_lun_cmd_info) <= CTL_PORT_PRIV_SIZE);
138
139/*
140 * When we register the adapter/bus, request that this many ctl_ios be
141 * allocated. This should be the maximum supported by the adapter, but we
142 * currently don't have a way to get that back from the path inquiry.
143 * XXX KDM add that to the path inquiry.
144 */
145#define CTLFE_REQ_CTL_IO 4096
146/*
147 * Number of Accept Target I/O CCBs to allocate and queue down to the
148 * adapter per LUN.
149 * XXX KDM should this be controlled by CTL?
150 */
151#define CTLFE_ATIO_PER_LUN 1024
152/*
153 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to
154 * allocate and queue down to the adapter per LUN.
155 * XXX KDM should this be controlled by CTL?
156 */
157#define CTLFE_IN_PER_LUN 1024
158
159/*
160 * Timeout (in seconds) on CTIO CCB allocation for doing a DMA or sending
161 * status to the initiator. The SIM is expected to have its own timeouts,
162 * so we're not putting this timeout around the CCB execution time. The
163 * SIM should timeout and let us know if it has an issue.
164 */
165#define CTLFE_DMA_TIMEOUT 60
166
167/*
168 * Turn this on to enable extra debugging prints.
169 */
170#if 0
171#define CTLFE_DEBUG
172#endif
173
174/*
175 * Use randomly assigned WWNN/WWPN values. This is to work around an issue
176 * in the FreeBSD initiator that makes it unable to rescan the target if
177 * the target gets rebooted and the WWNN/WWPN stay the same.
178 */
179#if 0
180#define RANDOM_WWNN
181#endif
182
183MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface");
184
185#define io_ptr ppriv_ptr0
186
187/* This is only used in the CTIO */
188#define ccb_atio ppriv_ptr1
189
190int ctlfeinitialize(void);
191void ctlfeshutdown(void);
192static periph_init_t ctlfeperiphinit;
193static void ctlfeasync(void *callback_arg, uint32_t code,
194 struct cam_path *path, void *arg);
195static periph_ctor_t ctlferegister;
196static periph_oninv_t ctlfeoninvalidate;
197static periph_dtor_t ctlfecleanup;
198static periph_start_t ctlfestart;
199static void ctlfedone(struct cam_periph *periph,
200 union ccb *done_ccb);
201
202static void ctlfe_onoffline(void *arg, int online);
203static void ctlfe_online(void *arg);
204static void ctlfe_offline(void *arg);
205static int ctlfe_lun_enable(void *arg, struct ctl_id targ_id,
206 int lun_id);
207static int ctlfe_lun_disable(void *arg, struct ctl_id targ_id,
208 int lun_id);
209static void ctlfe_dump_sim(struct cam_sim *sim);
210static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc);
211static void ctlfe_datamove(union ctl_io *io);
212static void ctlfe_done(union ctl_io *io);
213static void ctlfe_dump(void);
214
215static struct periph_driver ctlfe_driver =
216{
217 ctlfeperiphinit, "ctl",
218 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0,
219 CAM_PERIPH_DRV_EARLY
220};
221
222static struct ctl_frontend ctlfe_frontend =
223{
224 .name = "camtgt",
225 .init = ctlfeinitialize,
226 .fe_dump = ctlfe_dump,
227 .shutdown = ctlfeshutdown,
228};
229CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend);
230
231extern struct ctl_softc *control_softc;
232
233void
234ctlfeshutdown(void)
235{
236 return;
237}
238
239int
240ctlfeinitialize(void)
241{
242
243 STAILQ_INIT(&ctlfe_softc_list);
244 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF);
245 periphdriver_register(&ctlfe_driver);
246 return (0);
247}
248
249void
250ctlfeperiphinit(void)
251{
252 cam_status status;
253
254 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED |
255 AC_CONTRACT, ctlfeasync, NULL, NULL);
256 if (status != CAM_REQ_CMP) {
257 printf("ctl: Failed to attach async callback due to CAM "
258 "status 0x%x!\n", status);
259 }
260}
261
262static void
263ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
264{
265 struct ctlfe_softc *softc;
266
267#ifdef CTLFEDEBUG
268 printf("%s: entered\n", __func__);
269#endif
270
271 mtx_lock(&ctlfe_list_mtx);
272 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
273 if (softc->path_id == xpt_path_path_id(path))
274 break;
275 }
276 mtx_unlock(&ctlfe_list_mtx);
277
278 /*
279 * When a new path gets registered, and it is capable of target
280 * mode, go ahead and attach. Later on, we may need to be more
281 * selective, but for now this will be sufficient.
282 */
283 switch (code) {
284 case AC_PATH_REGISTERED: {
285 struct ctl_port *port;
286 struct ccb_pathinq *cpi;
287 int retval;
288
289 cpi = (struct ccb_pathinq *)arg;
290
291 /* Don't attach if it doesn't support target mode */
292 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) {
293#ifdef CTLFEDEBUG
294 printf("%s: SIM %s%d doesn't support target mode\n",
295 __func__, cpi->dev_name, cpi->unit_number);
296#endif
297 break;
298 }
299
300 if (softc != NULL) {
301#ifdef CTLFEDEBUG
302 printf("%s: CTL port for CAM path %u already exists\n",
303 __func__, xpt_path_path_id(path));
304#endif
305 break;
306 }
307
308#ifdef CTLFE_INIT_ENABLE
309 if (ctlfe_num_targets >= ctlfe_max_targets) {
310 union ccb *ccb;
311
312 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP,
313 M_NOWAIT | M_ZERO);
314 if (ccb == NULL) {
315 printf("%s: unable to malloc CCB!\n", __func__);
316 return;
317 }
318 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
319
320 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
321 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
322 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR;
323
324 xpt_action(ccb);
325
326 if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
327 CAM_REQ_CMP) {
328 printf("%s: SIM %s%d (path id %d) initiator "
329 "enable failed with status %#x\n",
330 __func__, cpi->dev_name,
331 cpi->unit_number, cpi->ccb_h.path_id,
332 ccb->ccb_h.status);
333 } else {
334 printf("%s: SIM %s%d (path id %d) initiator "
335 "enable succeeded\n",
336 __func__, cpi->dev_name,
337 cpi->unit_number, cpi->ccb_h.path_id);
338 }
339
340 free(ccb, M_TEMP);
341
342 break;
343 } else {
344 ctlfe_num_targets++;
345 }
346
347 printf("%s: ctlfe_num_targets = %d\n", __func__,
348 ctlfe_num_targets);
349#endif /* CTLFE_INIT_ENABLE */
350
351 /*
352 * We're in an interrupt context here, so we have to
353 * use M_NOWAIT. Of course this means trouble if we
354 * can't allocate memory.
355 */
356 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO);
357 if (softc == NULL) {
358 printf("%s: unable to malloc %zd bytes for softc\n",
359 __func__, sizeof(*softc));
360 return;
361 }
362
363 softc->path_id = cpi->ccb_h.path_id;
364 softc->sim = xpt_path_sim(path);
365 if (cpi->maxio != 0)
366 softc->maxio = cpi->maxio;
367 else
368 softc->maxio = DFLTPHYS;
369 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF);
370 STAILQ_INIT(&softc->lun_softc_list);
371
372 port = &softc->port;
373 port->frontend = &ctlfe_frontend;
374
375 /*
376 * XXX KDM should we be more accurate here ?
377 */
378 if (cpi->transport == XPORT_FC)
379 port->port_type = CTL_PORT_FC;
380 else if (cpi->transport == XPORT_SAS)
381 port->port_type = CTL_PORT_SAS;
382 else
383 port->port_type = CTL_PORT_SCSI;
384
385 /* XXX KDM what should the real number be here? */
386 port->num_requested_ctl_io = 4096;
387 snprintf(softc->port_name, sizeof(softc->port_name),
388 "%s%d", cpi->dev_name, cpi->unit_number);
389 /*
390 * XXX KDM it would be nice to allocate storage in the
391 * frontend structure itself.
392 */
393 port->port_name = softc->port_name;
394 port->physical_port = cpi->bus_id;
395 port->virtual_port = 0;
396 port->port_online = ctlfe_online;
397 port->port_offline = ctlfe_offline;
398 port->onoff_arg = softc;
399 port->lun_enable = ctlfe_lun_enable;
400 port->lun_disable = ctlfe_lun_disable;
401 port->targ_lun_arg = softc;
402 port->fe_datamove = ctlfe_datamove;
403 port->fe_done = ctlfe_done;
404 /*
405 * XXX KDM the path inquiry doesn't give us the maximum
406 * number of targets supported.
407 */
408 port->max_targets = cpi->max_target;
409 port->max_target_id = cpi->max_target;
410
411 /*
412 * XXX KDM need to figure out whether we're the master or
413 * slave.
414 */
415#ifdef CTLFEDEBUG
416 printf("%s: calling ctl_port_register() for %s%d\n",
417 __func__, cpi->dev_name, cpi->unit_number);
418#endif
419 retval = ctl_port_register(port);
420 if (retval != 0) {
421 printf("%s: ctl_port_register() failed with "
422 "error %d!\n", __func__, retval);
423 mtx_destroy(&softc->lun_softc_mtx);
424 free(softc, M_CTLFE);
425 break;
426 } else {
427 mtx_lock(&ctlfe_list_mtx);
428 STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links);
429 mtx_unlock(&ctlfe_list_mtx);
430 }
431
432 break;
433 }
434 case AC_PATH_DEREGISTERED: {
435
436 if (softc != NULL) {
437 /*
438 * XXX KDM are we certain at this point that there
439 * are no outstanding commands for this frontend?
440 */
441 mtx_lock(&ctlfe_list_mtx);
442 STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc,
443 links);
444 mtx_unlock(&ctlfe_list_mtx);
445 ctl_port_deregister(&softc->port);
446 mtx_destroy(&softc->lun_softc_mtx);
447 free(softc, M_CTLFE);
448 }
449 break;
450 }
451 case AC_CONTRACT: {
452 struct ac_contract *ac;
453
454 ac = (struct ac_contract *)arg;
455
456 switch (ac->contract_number) {
457 case AC_CONTRACT_DEV_CHG: {
458 struct ac_device_changed *dev_chg;
459 int retval;
460
461 dev_chg = (struct ac_device_changed *)ac->contract_data;
462
463 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n",
464 __func__, dev_chg->wwpn, dev_chg->port,
465 xpt_path_path_id(path), dev_chg->target,
466 (dev_chg->arrived == 0) ? "left" : "arrived");
467
468 if (softc == NULL) {
469 printf("%s: CTL port for CAM path %u not "
470 "found!\n", __func__,
471 xpt_path_path_id(path));
472 break;
473 }
474 if (dev_chg->arrived != 0) {
475 retval = ctl_add_initiator(&softc->port,
476 dev_chg->target, dev_chg->wwpn, NULL);
477 } else {
478 retval = ctl_remove_initiator(&softc->port,
479 dev_chg->target);
480 }
481
482 if (retval < 0) {
483 printf("%s: could not %s port %d iid %u "
484 "WWPN %#jx!\n", __func__,
485 (dev_chg->arrived != 0) ? "add" :
486 "remove", softc->port.targ_port,
487 dev_chg->target,
488 (uintmax_t)dev_chg->wwpn);
489 }
490 break;
491 }
492 default:
493 printf("%s: unsupported contract number %ju\n",
494 __func__, (uintmax_t)ac->contract_number);
495 break;
496 }
497 break;
498 }
499 default:
500 break;
501 }
502}
503
504static cam_status
505ctlferegister(struct cam_periph *periph, void *arg)
506{
507 struct ctlfe_softc *bus_softc;
508 struct ctlfe_lun_softc *softc;
509 union ccb en_lun_ccb;
510 cam_status status;
511 int i;
512
513 softc = (struct ctlfe_lun_softc *)arg;
514 bus_softc = softc->parent_softc;
515
516 TAILQ_INIT(&softc->work_queue);
517 softc->periph = periph;
518 periph->softc = softc;
519
520 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
521 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
522 en_lun_ccb.cel.grp6_len = 0;
523 en_lun_ccb.cel.grp7_len = 0;
524 en_lun_ccb.cel.enable = 1;
525 xpt_action(&en_lun_ccb);
526 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
527 if (status != CAM_REQ_CMP) {
528 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n",
529 __func__, en_lun_ccb.ccb_h.status);
530 return (status);
531 }
532
533 status = CAM_REQ_CMP;
534
535 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) {
536 union ccb *new_ccb;
537 union ctl_io *new_io;
538
539 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
540 M_ZERO|M_NOWAIT);
541 if (new_ccb == NULL) {
542 status = CAM_RESRC_UNAVAIL;
543 break;
544 }
545 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
546 if (new_io == NULL) {
547 free(new_ccb, M_CTLFE);
548 status = CAM_RESRC_UNAVAIL;
549 break;
550 }
551 new_ccb->ccb_h.io_ptr = new_io;
552
553 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
554 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
555 new_ccb->ccb_h.cbfcnp = ctlfedone;
556 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
557 xpt_action(new_ccb);
558 softc->atios_sent++;
559 status = new_ccb->ccb_h.status;
560 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
561 ctl_free_io(new_io);
562 free(new_ccb, M_CTLFE);
563 break;
564 }
565 }
566
567 status = cam_periph_acquire(periph);
568 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
569 xpt_print(periph->path, "%s: could not acquire reference "
570 "count, status = %#x\n", __func__, status);
571 return (status);
572 }
573
574 if (i == 0) {
575 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, "
576 "status 0x%x\n", __func__, status);
577 return (CAM_REQ_CMP_ERR);
578 }
579
580 for (i = 0; i < CTLFE_IN_PER_LUN; i++) {
581 union ccb *new_ccb;
582 union ctl_io *new_io;
583
584 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
585 M_ZERO|M_NOWAIT);
586 if (new_ccb == NULL) {
587 status = CAM_RESRC_UNAVAIL;
588 break;
589 }
590 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
591 if (new_io == NULL) {
592 free(new_ccb, M_CTLFE);
593 status = CAM_RESRC_UNAVAIL;
594 break;
595 }
596 new_ccb->ccb_h.io_ptr = new_io;
597
598 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
599 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
600 new_ccb->ccb_h.cbfcnp = ctlfedone;
601 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
602 xpt_action(new_ccb);
603 softc->inots_sent++;
604 status = new_ccb->ccb_h.status;
605 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
606 /*
607 * Note that we don't free the CCB here. If the
608 * status is not CAM_REQ_INPROG, then we're
609 * probably talking to a SIM that says it is
610 * target-capable but doesn't support the
611 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the
612 * older API. In that case, it'll call xpt_done()
613 * on the CCB, and we need to free it in our done
614 * routine as a result.
615 */
616 break;
617 }
618 }
619 if ((i == 0)
620 || (status != CAM_REQ_INPROG)) {
621 xpt_print(periph->path, "%s: could not allocate immediate "
622 "notify CCBs, status 0x%x\n", __func__, status);
623 return (CAM_REQ_CMP_ERR);
624 }
625 return (CAM_REQ_CMP);
626}
627
628static void
629ctlfeoninvalidate(struct cam_periph *periph)
630{
631 union ccb en_lun_ccb;
632 cam_status status;
633 struct ctlfe_softc *bus_softc;
634 struct ctlfe_lun_softc *softc;
635
636 softc = (struct ctlfe_lun_softc *)periph->softc;
637
638 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
639 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
640 en_lun_ccb.cel.grp6_len = 0;
641 en_lun_ccb.cel.grp7_len = 0;
642 en_lun_ccb.cel.enable = 0;
643 xpt_action(&en_lun_ccb);
644 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
645 if (status != CAM_REQ_CMP) {
646 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n",
647 __func__, en_lun_ccb.ccb_h.status);
648 /*
649 * XXX KDM what do we do now?
650 */
651 }
652 xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju "
653 "INOTs outstanding, %d refs\n", softc->atios_sent -
654 softc->atios_returned, softc->inots_sent -
655 softc->inots_returned, periph->refcount);
656
657 bus_softc = softc->parent_softc;
658 mtx_lock(&bus_softc->lun_softc_mtx);
659 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links);
660 mtx_unlock(&bus_softc->lun_softc_mtx);
661}
662
663static void
664ctlfecleanup(struct cam_periph *periph)
665{
666 struct ctlfe_lun_softc *softc;
667
668 xpt_print(periph->path, "%s: Called\n", __func__);
669
670 softc = (struct ctlfe_lun_softc *)periph->softc;
671
672 /*
673 * XXX KDM is there anything else that needs to be done here?
674 */
675
676 free(softc, M_CTLFE);
677}
678
679static void
680ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io,
681 ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len,
682 u_int16_t *sglist_cnt)
683{
684 struct ctlfe_softc *bus_softc;
685 struct ctlfe_lun_cmd_info *cmd_info;
686 struct ctl_sg_entry *ctl_sglist;
687 bus_dma_segment_t *cam_sglist;
688 size_t off;
689 int i, idx;
690
691 cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv;
692 bus_softc = softc->parent_softc;
693
694 /*
695 * Set the direction, relative to the initiator.
696 */
697 *flags &= ~CAM_DIR_MASK;
698 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN)
699 *flags |= CAM_DIR_IN;
700 else
701 *flags |= CAM_DIR_OUT;
702
703 *flags &= ~CAM_DATA_MASK;
704 idx = cmd_info->cur_transfer_index;
705 off = cmd_info->cur_transfer_off;
706 cmd_info->flags &= ~CTLFE_CMD_PIECEWISE;
707 if (io->scsiio.kern_sg_entries == 0) {
708 /* No S/G list. */
709 *data_ptr = io->scsiio.kern_data_ptr + off;
710 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) {
711 *dxfer_len = io->scsiio.kern_data_len - off;
712 } else {
713 *dxfer_len = bus_softc->maxio;
714 cmd_info->cur_transfer_index = -1;
715 cmd_info->cur_transfer_off = bus_softc->maxio;
716 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
717 }
718 *sglist_cnt = 0;
719
720 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
721 *flags |= CAM_DATA_PADDR;
722 else
723 *flags |= CAM_DATA_VADDR;
724 } else {
725 /* S/G list with physical or virtual pointers. */
726 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
727 cam_sglist = cmd_info->cam_sglist;
728 *dxfer_len = 0;
729 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) {
730 cam_sglist[i].ds_addr = (bus_addr_t)ctl_sglist[i + idx].addr + off;
731 if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) {
732 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off;
733 *dxfer_len += cam_sglist[i].ds_len;
734 } else {
735 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len;
736 cmd_info->cur_transfer_index = idx + i;
737 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off;
738 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
739 *dxfer_len += cam_sglist[i].ds_len;
740 if (ctl_sglist[i].len != 0)
741 i++;
742 break;
743 }
744 if (i == (CTLFE_MAX_SEGS - 1) &&
745 idx + i < (io->scsiio.kern_sg_entries - 1)) {
746 cmd_info->cur_transfer_index = idx + i + 1;
747 cmd_info->cur_transfer_off = 0;
748 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
749 i++;
750 break;
751 }
752 off = 0;
753 }
754 *sglist_cnt = i;
755 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
756 *flags |= CAM_DATA_SG_PADDR;
757 else
758 *flags |= CAM_DATA_SG;
759 *data_ptr = (uint8_t *)cam_sglist;
760 }
761}
762
763static void
764ctlfestart(struct cam_periph *periph, union ccb *start_ccb)
765{
766 struct ctlfe_lun_softc *softc;
767 struct ctlfe_lun_cmd_info *cmd_info;
768 struct ccb_hdr *ccb_h;
769 struct ccb_accept_tio *atio;
770 struct ccb_scsiio *csio;
771 uint8_t *data_ptr;
772 uint32_t dxfer_len;
773 ccb_flags flags;
774 union ctl_io *io;
775 uint8_t scsi_status;
776
777 softc = (struct ctlfe_lun_softc *)periph->softc;
778 softc->ccbs_alloced++;
779
780 ccb_h = TAILQ_FIRST(&softc->work_queue);
781 if (ccb_h == NULL) {
782 softc->ccbs_freed++;
783 xpt_release_ccb(start_ccb);
784 return;
785 }
786
787 /* Take the ATIO off the work queue */
788 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe);
789 atio = (struct ccb_accept_tio *)ccb_h;
790 io = (union ctl_io *)ccb_h->io_ptr;
791 csio = &start_ccb->csio;
792
793 flags = atio->ccb_h.flags &
794 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK);
795
796 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
797 /*
798 * Datamove call, we need to setup the S/G list.
799 */
800 cmd_info = (struct ctlfe_lun_cmd_info *)
801 io->io_hdr.port_priv;
802 bzero(cmd_info, sizeof(*cmd_info));
803 scsi_status = 0;
804 csio->cdb_len = atio->cdb_len;
805 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len,
806 &csio->sglist_cnt);
807 io->scsiio.ext_data_filled += dxfer_len;
808 if (io->scsiio.ext_data_filled > io->scsiio.kern_total_len) {
809 xpt_print(periph->path, "%s: tag 0x%04x "
810 "fill len %u > total %u\n",
811 __func__, io->scsiio.tag_num,
812 io->scsiio.ext_data_filled,
813 io->scsiio.kern_total_len);
814 }
815 } else {
816 /*
817 * We're done, send status back.
818 */
819 if ((io->io_hdr.flags & CTL_FLAG_ABORT) &&
820 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) {
821 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
822
823 /*
824 * If this command was aborted, we don't
825 * need to send status back to the SIM.
826 * Just free the CTIO and ctl_io, and
827 * recycle the ATIO back to the SIM.
828 */
829 xpt_print(periph->path, "%s: aborted "
830 "command 0x%04x discarded\n",
831 __func__, io->scsiio.tag_num);
832 /*
833 * For a wildcard attachment, commands can
834 * come in with a specific target/lun. Reset
835 * the target and LUN fields back to the
836 * wildcard values before we send them back
837 * down to the SIM. The SIM has a wildcard
838 * LUN enabled, not whatever target/lun
839 * these happened to be.
840 */
841 if (softc->flags & CTLFE_LUN_WILDCARD) {
842 atio->ccb_h.target_id = CAM_TARGET_WILDCARD;
843 atio->ccb_h.target_lun = CAM_LUN_WILDCARD;
844 }
845
846 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
847 cam_release_devq(periph->path,
848 /*relsim_flags*/0,
849 /*reduction*/0,
850 /*timeout*/0,
851 /*getcount_only*/0);
852 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
853 }
854
855 if (atio->ccb_h.func_code != XPT_ACCEPT_TARGET_IO) {
856 xpt_print(periph->path, "%s: func_code "
857 "is %#x\n", __func__,
858 atio->ccb_h.func_code);
859 }
860 start_ccb->ccb_h.func_code = XPT_ABORT;
861 start_ccb->cab.abort_ccb = (union ccb *)atio;
862
863 /* Tell the SIM that we've aborted this ATIO */
864 xpt_action(start_ccb);
865 softc->ccbs_freed++;
866 xpt_release_ccb(start_ccb);
867
868 /*
869 * Send the ATIO back down to the SIM.
870 */
871 xpt_action((union ccb *)atio);
872 softc->atios_sent++;
873
874 /*
875 * If we still have work to do, ask for
876 * another CCB. Otherwise, deactivate our
877 * callout.
878 */
879 if (!TAILQ_EMPTY(&softc->work_queue))
880 xpt_schedule(periph, /*priority*/ 1);
881 return;
882 }
883
884 flags |= CAM_SEND_STATUS;
885 scsi_status = io->scsiio.scsi_status;
886 csio->sense_len = io->scsiio.sense_len;
887 data_ptr = NULL;
888 dxfer_len = 0;
889#ifdef CTLFEDEBUG
890 printf("%s: tag %04x status %x\n", __func__,
891 atio->tag_id, io->io_hdr.status);
892#endif
893 csio->sglist_cnt = 0;
894 if (csio->sense_len != 0) {
895 csio->sense_data = io->scsiio.sense_data;
896 flags |= CAM_SEND_SENSE;
897 } else if (scsi_status == SCSI_STATUS_CHECK_COND) {
898 xpt_print(periph->path, "%s: check condition "
899 "with no sense\n", __func__);
900 }
901 }
902
903#ifdef CTLFEDEBUG
904 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__,
905 (flags & CAM_SEND_STATUS) ? "done" : "datamove",
906 atio->tag_id, flags, data_ptr, dxfer_len);
907#endif
908
909 /*
910 * Valid combinations:
911 * - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0,
912 * sglist_cnt = 0
913 * - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0,
914 * sglist_cnt = 0
915 * - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0,
916 * sglist_cnt != 0
917 */
918#ifdef CTLFEDEBUG
919 if (((flags & CAM_SEND_STATUS)
920 && (((flags & CAM_DATA_SG) != 0)
921 || (dxfer_len != 0)
922 || (csio->sglist_cnt != 0)))
923 || (((flags & CAM_SEND_STATUS) == 0)
924 && (dxfer_len == 0))
925 || ((flags & CAM_DATA_SG)
926 && (csio->sglist_cnt == 0))
927 || (((flags & CAM_DATA_SG) == 0)
928 && (csio->sglist_cnt != 0))) {
929 printf("%s: tag %04x cdb %02x flags %#x dxfer_len "
930 "%d sg %u\n", __func__, atio->tag_id,
931 atio->cdb_io.cdb_bytes[0], flags, dxfer_len,
932 csio->sglist_cnt);
933 printf("%s: tag %04x io status %#x\n", __func__,
934 atio->tag_id, io->io_hdr.status);
935 }
936#endif
937 cam_fill_ctio(csio,
938 /*retries*/ 2,
939 ctlfedone,
940 flags,
941 (flags & CAM_TAG_ACTION_VALID) ? MSG_SIMPLE_Q_TAG : 0,
942 atio->tag_id,
943 atio->init_id,
944 scsi_status,
945 /*data_ptr*/ data_ptr,
946 /*dxfer_len*/ dxfer_len,
947 /*timeout*/ 5 * 1000);
948 start_ccb->ccb_h.flags |= CAM_UNLOCKED;
949 start_ccb->ccb_h.ccb_atio = atio;
950 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED)
951 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
952 io->io_hdr.flags &= ~(CTL_FLAG_DMA_QUEUED | CTL_FLAG_STATUS_QUEUED);
953
954 softc->ctios_sent++;
955
956 cam_periph_unlock(periph);
957 xpt_action(start_ccb);
958 cam_periph_lock(periph);
959
960 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
961 cam_release_devq(periph->path,
962 /*relsim_flags*/0,
963 /*reduction*/0,
964 /*timeout*/0,
965 /*getcount_only*/0);
966 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
967 }
968
969 /*
970 * If we still have work to do, ask for another CCB.
971 */
972 if (!TAILQ_EMPTY(&softc->work_queue))
973 xpt_schedule(periph, /*priority*/ 1);
974}
975
976static void
977ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb)
978{
979 struct ctlfe_lun_softc *softc;
980
981 softc = (struct ctlfe_lun_softc *)periph->softc;
982
983 switch (ccb->ccb_h.func_code) {
984 case XPT_ACCEPT_TARGET_IO:
985 softc->atios_returned++;
986 break;
987 case XPT_IMMEDIATE_NOTIFY:
988 case XPT_NOTIFY_ACKNOWLEDGE:
989 softc->inots_returned++;
990 break;
991 default:
992 break;
993 }
994
995 ctl_free_io(ccb->ccb_h.io_ptr);
996 free(ccb, M_CTLFE);
997
998 KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: "
999 "atios_returned %ju > atios_sent %ju", __func__,
1000 softc->atios_returned, softc->atios_sent));
1001 KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: "
1002 "inots_returned %ju > inots_sent %ju", __func__,
1003 softc->inots_returned, softc->inots_sent));
1004
1005 /*
1006 * If we have received all of our CCBs, we can release our
1007 * reference on the peripheral driver. It will probably go away
1008 * now.
1009 */
1010 if ((softc->atios_returned == softc->atios_sent)
1011 && (softc->inots_returned == softc->inots_sent)) {
1012 cam_periph_release_locked(periph);
1013 }
1014}
1015
1016static int
1017ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset)
1018{
1019 uint64_t lba;
1020 uint32_t num_blocks, nbc;
1021 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)?
1022 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes;
1023
1024 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */
1025
1026 switch (cmdbyt[0]) {
1027 case READ_6:
1028 case WRITE_6:
1029 {
1030 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt;
1031 lba = scsi_3btoul(cdb->addr);
1032 lba &= 0x1fffff;
1033 num_blocks = cdb->length;
1034 if (num_blocks == 0)
1035 num_blocks = 256;
1036 lba += nbc;
1037 num_blocks -= nbc;
1038 scsi_ulto3b(lba, cdb->addr);
1039 cdb->length = num_blocks;
1040 break;
1041 }
1042 case READ_10:
1043 case WRITE_10:
1044 {
1045 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt;
1046 lba = scsi_4btoul(cdb->addr);
1047 num_blocks = scsi_2btoul(cdb->length);
1048 lba += nbc;
1049 num_blocks -= nbc;
1050 scsi_ulto4b(lba, cdb->addr);
1051 scsi_ulto2b(num_blocks, cdb->length);
1052 break;
1053 }
1054 case READ_12:
1055 case WRITE_12:
1056 {
1057 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt;
1058 lba = scsi_4btoul(cdb->addr);
1059 num_blocks = scsi_4btoul(cdb->length);
1060 lba += nbc;
1061 num_blocks -= nbc;
1062 scsi_ulto4b(lba, cdb->addr);
1063 scsi_ulto4b(num_blocks, cdb->length);
1064 break;
1065 }
1066 case READ_16:
1067 case WRITE_16:
1068 case WRITE_ATOMIC_16:
1069 {
1070 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt;
1071 lba = scsi_8btou64(cdb->addr);
1072 num_blocks = scsi_4btoul(cdb->length);
1073 lba += nbc;
1074 num_blocks -= nbc;
1075 scsi_u64to8b(lba, cdb->addr);
1076 scsi_ulto4b(num_blocks, cdb->length);
1077 break;
1078 }
1079 default:
1080 return -1;
1081 }
1082 return (0);
1083}
1084
1085static void
1086ctlfedone(struct cam_periph *periph, union ccb *done_ccb)
1087{
1088 struct ctlfe_lun_softc *softc;
1089 struct ctlfe_softc *bus_softc;
1090 struct ccb_accept_tio *atio = NULL;
1091 union ctl_io *io = NULL;
1092 struct mtx *mtx;
1093
1094 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0,
1095 ("CCB in ctlfedone() without CAM_UNLOCKED flag"));
1096#ifdef CTLFE_DEBUG
1097 printf("%s: entered, func_code = %#x\n", __func__,
1098 done_ccb->ccb_h.func_code);
1099#endif
1100
1101 softc = (struct ctlfe_lun_softc *)periph->softc;
1102 bus_softc = softc->parent_softc;
1103 mtx = cam_periph_mtx(periph);
1104 mtx_lock(mtx);
1105
1106 /*
1107 * If the peripheral is invalid, ATIOs and immediate notify CCBs
1108 * need to be freed. Most of the ATIOs and INOTs that come back
1109 * will be CCBs that are being returned from the SIM as a result of
1110 * our disabling the LUN.
1111 *
1112 * Other CCB types are handled in their respective cases below.
1113 */
1114 if (periph->flags & CAM_PERIPH_INVALID) {
1115 switch (done_ccb->ccb_h.func_code) {
1116 case XPT_ACCEPT_TARGET_IO:
1117 case XPT_IMMEDIATE_NOTIFY:
1118 case XPT_NOTIFY_ACKNOWLEDGE:
1119 ctlfe_free_ccb(periph, done_ccb);
1120 goto out;
1121 default:
1122 break;
1123 }
1124
1125 }
1126 switch (done_ccb->ccb_h.func_code) {
1127 case XPT_ACCEPT_TARGET_IO: {
1128
1129 atio = &done_ccb->atio;
1130
1131 softc->atios_returned++;
1132
1133 resubmit:
1134 /*
1135 * Allocate a ctl_io, pass it to CTL, and wait for the
1136 * datamove or done.
1137 */
1138 mtx_unlock(mtx);
1139 io = done_ccb->ccb_h.io_ptr;
1140 ctl_zero_io(io);
1141
1142 /* Save pointers on both sides */
1143 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb;
1144 done_ccb->ccb_h.io_ptr = io;
1145
1146 /*
1147 * Only SCSI I/O comes down this path, resets, etc. come
1148 * down the immediate notify path below.
1149 */
1150 io->io_hdr.io_type = CTL_IO_SCSI;
1151 io->io_hdr.nexus.initid.id = atio->init_id;
1152 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1153 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id;
1154 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun;
1155 io->scsiio.tag_num = atio->tag_id;
1156 switch (atio->tag_action) {
1157 case CAM_TAG_ACTION_NONE:
1158 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1159 break;
1160 case MSG_SIMPLE_TASK:
1161 io->scsiio.tag_type = CTL_TAG_SIMPLE;
1162 break;
1163 case MSG_HEAD_OF_QUEUE_TASK:
1164 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
1165 break;
1166 case MSG_ORDERED_TASK:
1167 io->scsiio.tag_type = CTL_TAG_ORDERED;
1168 break;
1169 case MSG_ACA_TASK:
1170 io->scsiio.tag_type = CTL_TAG_ACA;
1171 break;
1172 default:
1173 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1174 printf("%s: unhandled tag type %#x!!\n", __func__,
1175 atio->tag_action);
1176 break;
1177 }
1178 if (atio->cdb_len > sizeof(io->scsiio.cdb)) {
1179 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
1180 __func__, atio->cdb_len, sizeof(io->scsiio.cdb));
1181 }
1182 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb));
1183 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb,
1184 io->scsiio.cdb_len);
1185
1186#ifdef CTLFEDEBUG
1187 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__,
1188 (uintmax_t)io->io_hdr.nexus.initid.id,
1189 io->io_hdr.nexus.targ_port,
1190 (uintmax_t)io->io_hdr.nexus.targ_target.id,
1191 io->io_hdr.nexus.targ_lun,
1192 io->scsiio.tag_num, io->scsiio.cdb[0]);
1193#endif
1194
1195 ctl_queue(io);
1196 return;
1197 }
1198 case XPT_CONT_TARGET_IO: {
1199 int srr = 0;
1200 uint32_t srr_off = 0;
1201
1202 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio;
1203 io = (union ctl_io *)atio->ccb_h.io_ptr;
1204
1205 softc->ctios_returned++;
1206#ifdef CTLFEDEBUG
1207 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n",
1208 __func__, atio->tag_id, done_ccb->ccb_h.flags);
1209#endif
1210 /*
1211 * Handle SRR case were the data pointer is pushed back hack
1212 */
1213 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV
1214 && done_ccb->csio.msg_ptr != NULL
1215 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED
1216 && done_ccb->csio.msg_ptr[1] == 5
1217 && done_ccb->csio.msg_ptr[2] == 0) {
1218 srr = 1;
1219 srr_off =
1220 (done_ccb->csio.msg_ptr[3] << 24)
1221 | (done_ccb->csio.msg_ptr[4] << 16)
1222 | (done_ccb->csio.msg_ptr[5] << 8)
1223 | (done_ccb->csio.msg_ptr[6]);
1224 }
1225
1226 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1227 /*
1228 * If status was being sent, the back end data is now
1229 * history. Hack it up and resubmit a new command with
1230 * the CDB adjusted. If the SIM does the right thing,
1231 * all of the resid math should work.
1232 */
1233 softc->ccbs_freed++;
1234 xpt_release_ccb(done_ccb);
1235 if (ctlfe_adjust_cdb(atio, srr_off) == 0) {
1236 done_ccb = (union ccb *)atio;
1237 goto resubmit;
1238 }
1239 /*
1240 * Fall through to doom....
1241 */
1242 } else if (srr) {
1243 /*
1244 * If we have an srr and we're still sending data, we
1245 * should be able to adjust offsets and cycle again.
1246 */
1247 io->scsiio.kern_rel_offset =
1248 io->scsiio.ext_data_filled = srr_off;
1249 io->scsiio.ext_data_len = io->scsiio.kern_total_len -
1250 io->scsiio.kern_rel_offset;
1251 softc->ccbs_freed++;
1252 io->scsiio.io_hdr.status = CTL_STATUS_NONE;
1253 xpt_release_ccb(done_ccb);
1254 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h,
1255 periph_links.tqe);
1256 xpt_schedule(periph, /*priority*/ 1);
1257 break;
1258 }
1259
1260 /*
1261 * If we were sending status back to the initiator, free up
1262 * resources. If we were doing a datamove, call the
1263 * datamove done routine.
1264 */
1265 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1266 softc->ccbs_freed++;
1267 xpt_release_ccb(done_ccb);
1268 /*
1269 * For a wildcard attachment, commands can come in
1270 * with a specific target/lun. Reset the target
1271 * and LUN fields back to the wildcard values before
1272 * we send them back down to the SIM. The SIM has
1273 * a wildcard LUN enabled, not whatever target/lun
1274 * these happened to be.
1275 */
1276 if (softc->flags & CTLFE_LUN_WILDCARD) {
1277 atio->ccb_h.target_id = CAM_TARGET_WILDCARD;
1278 atio->ccb_h.target_lun = CAM_LUN_WILDCARD;
1279 }
1280 if (periph->flags & CAM_PERIPH_INVALID) {
1281 ctlfe_free_ccb(periph, (union ccb *)atio);
1282 } else {
1283 softc->atios_sent++;
1284 mtx_unlock(mtx);
1285 xpt_action((union ccb *)atio);
1286 return;
1287 }
1288 } else {
1289 struct ctlfe_lun_cmd_info *cmd_info;
1290 struct ccb_scsiio *csio;
1291
1292 csio = &done_ccb->csio;
1293 cmd_info = (struct ctlfe_lun_cmd_info *)
1294 io->io_hdr.port_priv;
1295
1296 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG;
1297
1298 io->scsiio.ext_data_len += csio->dxfer_len;
1299 if (io->scsiio.ext_data_len >
1300 io->scsiio.kern_total_len) {
1301 xpt_print(periph->path, "%s: tag 0x%04x "
1302 "done len %u > total %u sent %u\n",
1303 __func__, io->scsiio.tag_num,
1304 io->scsiio.ext_data_len,
1305 io->scsiio.kern_total_len,
1306 io->scsiio.ext_data_filled);
1307 }
1308 /*
1309 * Translate CAM status to CTL status. Success
1310 * does not change the overall, ctl_io status. In
1311 * that case we just set port_status to 0. If we
1312 * have a failure, though, set a data phase error
1313 * for the overall ctl_io.
1314 */
1315 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) {
1316 case CAM_REQ_CMP:
1317 io->io_hdr.port_status = 0;
1318 break;
1319 default:
1320 /*
1321 * XXX KDM we probably need to figure out a
1322 * standard set of errors that the SIM
1323 * drivers should return in the event of a
1324 * data transfer failure. A data phase
1325 * error will at least point the user to a
1326 * data transfer error of some sort.
1327 * Hopefully the SIM printed out some
1328 * additional information to give the user
1329 * a clue what happened.
1330 */
1331 io->io_hdr.port_status = 0xbad1;
1332 ctl_set_data_phase_error(&io->scsiio);
1333 /*
1334 * XXX KDM figure out residual.
1335 */
1336 break;
1337 }
1338 /*
1339 * If we had to break this S/G list into multiple
1340 * pieces, figure out where we are in the list, and
1341 * continue sending pieces if necessary.
1342 */
1343 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE)
1344 && (io->io_hdr.port_status == 0)) {
1345 ccb_flags flags;
1346 uint8_t scsi_status;
1347 uint8_t *data_ptr;
1348 uint32_t dxfer_len;
1349
1350 flags = atio->ccb_h.flags &
1351 (CAM_DIS_DISCONNECT|
1352 CAM_TAG_ACTION_VALID);
1353
1354 ctlfedata(softc, io, &flags, &data_ptr,
1355 &dxfer_len, &csio->sglist_cnt);
1356
1357 scsi_status = 0;
1358
1359 if (((flags & CAM_SEND_STATUS) == 0)
1360 && (dxfer_len == 0)) {
1361 printf("%s: tag %04x no status or "
1362 "len cdb = %02x\n", __func__,
1363 atio->tag_id,
1364 atio->cdb_io.cdb_bytes[0]);
1365 printf("%s: tag %04x io status %#x\n",
1366 __func__, atio->tag_id,
1367 io->io_hdr.status);
1368 }
1369
1370 cam_fill_ctio(csio,
1371 /*retries*/ 2,
1372 ctlfedone,
1373 flags,
1374 (flags & CAM_TAG_ACTION_VALID) ?
1375 MSG_SIMPLE_Q_TAG : 0,
1376 atio->tag_id,
1377 atio->init_id,
1378 scsi_status,
1379 /*data_ptr*/ data_ptr,
1380 /*dxfer_len*/ dxfer_len,
1381 /*timeout*/ 5 * 1000);
1382
1383 csio->ccb_h.flags |= CAM_UNLOCKED;
1384 csio->resid = 0;
1385 csio->ccb_h.ccb_atio = atio;
1386 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1387 softc->ctios_sent++;
1388 mtx_unlock(mtx);
1389 xpt_action((union ccb *)csio);
1390 } else {
1391 /*
1392 * Release the CTIO. The ATIO will be sent back
1393 * down to the SIM once we send status.
1394 */
1395 softc->ccbs_freed++;
1396 xpt_release_ccb(done_ccb);
1397 mtx_unlock(mtx);
1398
1399 /* Call the backend move done callback */
1400 io->scsiio.be_move_done(io);
1401 }
1402 return;
1403 }
1404 break;
1405 }
1406 case XPT_IMMEDIATE_NOTIFY: {
1407 union ctl_io *io;
1408 struct ccb_immediate_notify *inot;
1409 cam_status status;
1410 int frozen, send_ctl_io;
1411
1412 inot = &done_ccb->cin1;
1413
1414 softc->inots_returned++;
1415
1416 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1417
1418 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x "
1419 "seq %#x\n", __func__, inot->ccb_h.status,
1420 inot->tag_id, inot->seq_id);
1421
1422 io = done_ccb->ccb_h.io_ptr;
1423 ctl_zero_io(io);
1424
1425 send_ctl_io = 1;
1426
1427 io->io_hdr.io_type = CTL_IO_TASK;
1428 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb;
1429 inot->ccb_h.io_ptr = io;
1430 io->io_hdr.nexus.initid.id = inot->initiator_id;
1431 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1432 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id;
1433 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun;
1434 /* XXX KDM should this be the tag_id? */
1435 io->taskio.tag_num = inot->seq_id;
1436
1437 status = inot->ccb_h.status & CAM_STATUS_MASK;
1438 switch (status) {
1439 case CAM_SCSI_BUS_RESET:
1440 io->taskio.task_action = CTL_TASK_BUS_RESET;
1441 break;
1442 case CAM_BDR_SENT:
1443 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1444 break;
1445 case CAM_MESSAGE_RECV:
1446 switch (inot->arg) {
1447 case MSG_ABORT_TASK_SET:
1448 io->taskio.task_action =
1449 CTL_TASK_ABORT_TASK_SET;
1450 break;
1451 case MSG_TARGET_RESET:
1452 io->taskio.task_action =
1453 CTL_TASK_TARGET_RESET;
1454 break;
1455 case MSG_ABORT_TASK:
1456 io->taskio.task_action =
1457 CTL_TASK_ABORT_TASK;
1458 break;
1459 case MSG_LOGICAL_UNIT_RESET:
1460 io->taskio.task_action =
1461 CTL_TASK_LUN_RESET;
1462 break;
1463 case MSG_CLEAR_TASK_SET:
1464 io->taskio.task_action =
1465 CTL_TASK_CLEAR_TASK_SET;
1466 break;
1467 case MSG_CLEAR_ACA:
1468 io->taskio.task_action =
1469 CTL_TASK_CLEAR_ACA;
1470 break;
1471 case MSG_NOOP:
1472 send_ctl_io = 0;
1473 break;
1474 default:
1475 xpt_print(periph->path,
1476 "%s: unsupported message 0x%x\n",
1477 __func__, inot->arg);
1478 send_ctl_io = 0;
1479 break;
1480 }
1481 break;
1482 case CAM_REQ_ABORTED:
1483 /*
1484 * This request was sent back by the driver.
1485 * XXX KDM what do we do here?
1486 */
1487 send_ctl_io = 0;
1488 break;
1489 case CAM_REQ_INVALID:
1490 case CAM_PROVIDE_FAIL:
1491 default:
1492 /*
1493 * We should only get here if we're talking
1494 * to a talking to a SIM that is target
1495 * capable but supports the old API. In
1496 * that case, we need to just free the CCB.
1497 * If we actually send a notify acknowledge,
1498 * it will send that back with an error as
1499 * well.
1500 */
1501
1502 if ((status != CAM_REQ_INVALID)
1503 && (status != CAM_PROVIDE_FAIL))
1504 xpt_print(periph->path,
1505 "%s: unsupported CAM status 0x%x\n",
1506 __func__, status);
1507
1508 ctlfe_free_ccb(periph, done_ccb);
1509
1510 goto out;
1511 }
1512 if (send_ctl_io != 0) {
1513 ctl_queue(io);
1514 } else {
1515 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1516 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1517 xpt_action(done_ccb);
1518 }
1519
1520 if (frozen != 0) {
1521 cam_release_devq(periph->path,
1522 /*relsim_flags*/ 0,
1523 /*opening reduction*/ 0,
1524 /*timeout*/ 0,
1525 /*getcount_only*/ 0);
1526 }
1527 break;
1528 }
1529 case XPT_NOTIFY_ACKNOWLEDGE:
1530 /*
1531 * Queue this back down to the SIM as an immediate notify.
1532 */
1533 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
1534 xpt_action(done_ccb);
1535 softc->inots_sent++;
1536 break;
1537 case XPT_SET_SIM_KNOB:
1538 case XPT_GET_SIM_KNOB:
1539 break;
1540 default:
1541 panic("%s: unexpected CCB type %#x", __func__,
1542 done_ccb->ccb_h.func_code);
1543 break;
1544 }
1545
1546out:
1547 mtx_unlock(mtx);
1548}
1549
1550static void
1551ctlfe_onoffline(void *arg, int online)
1552{
1553 struct ctlfe_softc *bus_softc;
1554 union ccb *ccb;
1555 cam_status status;
1556 struct cam_path *path;
1557 int set_wwnn;
1558
1559 bus_softc = (struct ctlfe_softc *)arg;
1560
1561 set_wwnn = 0;
1562
1563 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id,
1564 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1565 if (status != CAM_REQ_CMP) {
1566 printf("%s: unable to create path!\n", __func__);
1567 return;
1568 }
1569 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, M_NOWAIT | M_ZERO);
1570 if (ccb == NULL) {
1571 printf("%s: unable to malloc CCB!\n", __func__);
1572 xpt_free_path(path);
1573 return;
1574 }
1575 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
1576
1577 /*
1578 * Copan WWN format:
1579 *
1580 * Bits 63-60: 0x5 NAA, IEEE registered name
1581 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan
1582 * Bits 35-12: Copan SSN (Sequential Serial Number)
1583 * Bits 11-8: Type of port:
1584 * 1 == N-Port
1585 * 2 == F-Port
1586 * 3 == NL-Port
1587 * Bits 7-0: 0 == Node Name, >0 == Port Number
1588 */
1589
1590 if (online != 0) {
1591
1592 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB;
1593
1594
1595 xpt_action(ccb);
1596
1597
1598 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){
1599#ifdef RANDOM_WWNN
1600 uint64_t random_bits;
1601#endif
1602
1603 printf("%s: %s current WWNN %#jx\n", __func__,
1604 bus_softc->port_name,
1605 ccb->knob.xport_specific.fc.wwnn);
1606 printf("%s: %s current WWPN %#jx\n", __func__,
1607 bus_softc->port_name,
1608 ccb->knob.xport_specific.fc.wwpn);
1609
1610#ifdef RANDOM_WWNN
1611 arc4rand(&random_bits, sizeof(random_bits), 0);
1612#endif
1613
1614 /*
1615 * XXX KDM this is a bit of a kludge for now. We
1616 * take the current WWNN/WWPN from the card, and
1617 * replace the company identifier and the NL-Port
1618 * indicator and the port number (for the WWPN).
1619 * This should be replaced later with ddb_GetWWNN,
1620 * or possibly a more centralized scheme. (It
1621 * would be nice to have the WWNN/WWPN for each
1622 * port stored in the ctl_port structure.)
1623 */
1624#ifdef RANDOM_WWNN
1625 ccb->knob.xport_specific.fc.wwnn =
1626 (random_bits &
1627 0x0000000fffffff00ULL) |
1628 /* Company ID */ 0x5000ED5000000000ULL |
1629 /* NL-Port */ 0x0300;
1630 ccb->knob.xport_specific.fc.wwpn =
1631 (random_bits &
1632 0x0000000fffffff00ULL) |
1633 /* Company ID */ 0x5000ED5000000000ULL |
1634 /* NL-Port */ 0x3000 |
1635 /* Port Num */ (bus_softc->port.targ_port & 0xff);
1636
1637 /*
1638 * This is a bit of an API break/reversal, but if
1639 * we're doing the random WWNN that's a little
1640 * different anyway. So record what we're actually
1641 * using with the frontend code so it's reported
1642 * accurately.
1643 */
1644 ctl_port_set_wwns(&bus_softc->port,
1645 true, ccb->knob.xport_specific.fc.wwnn,
1646 true, ccb->knob.xport_specific.fc.wwpn);
1647 set_wwnn = 1;
1648#else /* RANDOM_WWNN */
1649 /*
1650 * If the user has specified a WWNN/WWPN, send them
1651 * down to the SIM. Otherwise, record what the SIM
1652 * has reported.
1653 */
1654 if ((bus_softc->port.wwnn != 0)
1655 && (bus_softc->port.wwpn != 0)) {
1656 ccb->knob.xport_specific.fc.wwnn =
1657 bus_softc->port.wwnn;
1658 ccb->knob.xport_specific.fc.wwpn =
1659 bus_softc->port.wwpn;
1660 set_wwnn = 1;
1661 } else {
1662 ctl_port_set_wwns(&bus_softc->port,
1663 true, ccb->knob.xport_specific.fc.wwnn,
1664 true, ccb->knob.xport_specific.fc.wwpn);
1665 }
1666#endif /* RANDOM_WWNN */
1667
1668
1669 if (set_wwnn != 0) {
1670 printf("%s: %s new WWNN %#jx\n", __func__,
1671 bus_softc->port_name,
1672 ccb->knob.xport_specific.fc.wwnn);
1673 printf("%s: %s new WWPN %#jx\n", __func__,
1674 bus_softc->port_name,
1675 ccb->knob.xport_specific.fc.wwpn);
1676 }
1677 } else {
1678 printf("%s: %s has no valid WWNN/WWPN\n", __func__,
1679 bus_softc->port_name);
1680 }
1681 }
1682 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1683 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
1684 if (set_wwnn != 0)
1685 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS;
1686
1687 if (online != 0)
1688 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET;
1689 else
1690 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE;
1691
1692 xpt_action(ccb);
1693
1694 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1695 printf("%s: SIM %s (path id %d) target %s failed with "
1696 "status %#x\n",
1697 __func__, bus_softc->port_name, bus_softc->path_id,
1698 (online != 0) ? "enable" : "disable",
1699 ccb->ccb_h.status);
1700 } else {
1701 printf("%s: SIM %s (path id %d) target %s succeeded\n",
1702 __func__, bus_softc->port_name, bus_softc->path_id,
1703 (online != 0) ? "enable" : "disable");
1704 }
1705
1706 xpt_free_path(path);
1707
1708 free(ccb, M_TEMP);
1709
1710 return;
1711}
1712
1713static void
1714ctlfe_online(void *arg)
1715{
1716 struct ctlfe_softc *bus_softc;
1717 struct cam_path *path;
1718 cam_status status;
1719 struct ctlfe_lun_softc *lun_softc;
1720 struct cam_periph *periph;
1721
1722 bus_softc = (struct ctlfe_softc *)arg;
1723
1724 /*
1725 * Create the wildcard LUN before bringing the port online.
1726 */
1727 status = xpt_create_path(&path, /*periph*/ NULL,
1728 bus_softc->path_id, CAM_TARGET_WILDCARD,
1729 CAM_LUN_WILDCARD);
1730 if (status != CAM_REQ_CMP) {
1731 printf("%s: unable to create path for wildcard periph\n",
1732 __func__);
1733 return;
1734 }
1735
1736 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE,
1737 M_NOWAIT | M_ZERO);
1738 if (lun_softc == NULL) {
1739 xpt_print(path, "%s: unable to allocate softc for "
1740 "wildcard periph\n", __func__);
1741 xpt_free_path(path);
1742 return;
1743 }
1744
1745 xpt_path_lock(path);
1746 periph = cam_periph_find(path, "ctl");
1747 if (periph != NULL) {
1748 /* We've already got a periph, no need to alloc a new one. */
1749 xpt_path_unlock(path);
1750 xpt_free_path(path);
1751 free(lun_softc, M_CTLFE);
1752 return;
1753 }
1754 lun_softc->parent_softc = bus_softc;
1755 lun_softc->flags |= CTLFE_LUN_WILDCARD;
1756
1757 status = cam_periph_alloc(ctlferegister,
1758 ctlfeoninvalidate,
1759 ctlfecleanup,
1760 ctlfestart,
1761 "ctl",
1762 CAM_PERIPH_BIO,
1763 path,
1764 ctlfeasync,
1765 0,
1766 lun_softc);
1767
1768 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1769 const struct cam_status_entry *entry;
1770
1771 entry = cam_fetch_status_entry(status);
1772 printf("%s: CAM error %s (%#x) returned from "
1773 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1774 entry->status_text : "Unknown", status);
1775 free(lun_softc, M_CTLFE);
1776 } else {
1777 mtx_lock(&bus_softc->lun_softc_mtx);
1778 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, lun_softc, links);
1779 mtx_unlock(&bus_softc->lun_softc_mtx);
1780 ctlfe_onoffline(arg, /*online*/ 1);
1781 }
1782
1783 xpt_path_unlock(path);
1784 xpt_free_path(path);
1785}
1786
1787static void
1788ctlfe_offline(void *arg)
1789{
1790 struct ctlfe_softc *bus_softc;
1791 struct cam_path *path;
1792 cam_status status;
1793 struct cam_periph *periph;
1794
1795 bus_softc = (struct ctlfe_softc *)arg;
1796
1797 /*
1798 * Disable the wildcard LUN for this port now that we have taken
1799 * the port offline.
1800 */
1801 status = xpt_create_path(&path, /*periph*/ NULL,
1802 bus_softc->path_id, CAM_TARGET_WILDCARD,
1803 CAM_LUN_WILDCARD);
1804 if (status != CAM_REQ_CMP) {
1805 printf("%s: unable to create path for wildcard periph\n",
1806 __func__);
1807 return;
1808 }
1809
1810 xpt_path_lock(path);
1811
1812 ctlfe_onoffline(arg, /*online*/ 0);
1813
1814 if ((periph = cam_periph_find(path, "ctl")) != NULL)
1815 cam_periph_invalidate(periph);
1816
1817 xpt_path_unlock(path);
1818 xpt_free_path(path);
1819}
1820
1821/*
1822 * This will get called to enable a LUN on every bus that is attached to
1823 * CTL. So we only need to create a path/periph for this particular bus.
1824 */
1825static int
1826ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id)
1827{
1828 struct ctlfe_softc *bus_softc;
1829 struct ctlfe_lun_softc *softc;
1830 struct cam_path *path;
1831 struct cam_periph *periph;
1832 cam_status status;
1833
1834 bus_softc = (struct ctlfe_softc *)arg;
1835
1836 status = xpt_create_path(&path, /*periph*/ NULL,
1837 bus_softc->path_id,
1838 targ_id.id, lun_id);
1839 /* XXX KDM need some way to return status to CTL here? */
1840 if (status != CAM_REQ_CMP) {
1841 printf("%s: could not create path, status %#x\n", __func__,
1842 status);
1843 return (1);
1844 }
1845
1846 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO);
1847 xpt_path_lock(path);
1848 periph = cam_periph_find(path, "ctl");
1849 if (periph != NULL) {
1850 /* We've already got a periph, no need to alloc a new one. */
1851 xpt_path_unlock(path);
1852 xpt_free_path(path);
1853 free(softc, M_CTLFE);
1854 return (0);
1855 }
1856 softc->parent_softc = bus_softc;
1857
1858 status = cam_periph_alloc(ctlferegister,
1859 ctlfeoninvalidate,
1860 ctlfecleanup,
1861 ctlfestart,
1862 "ctl",
1863 CAM_PERIPH_BIO,
1864 path,
1865 ctlfeasync,
1866 0,
1867 softc);
1868
1869 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1870 const struct cam_status_entry *entry;
1871
1872 entry = cam_fetch_status_entry(status);
1873 printf("%s: CAM error %s (%#x) returned from "
1874 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1875 entry->status_text : "Unknown", status);
1876 free(softc, M_CTLFE);
1877 } else {
1878 mtx_lock(&bus_softc->lun_softc_mtx);
1879 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links);
1880 mtx_unlock(&bus_softc->lun_softc_mtx);
1881 }
1882
1883 xpt_path_unlock(path);
1884 xpt_free_path(path);
1885 return (0);
1886}
1887
1888/*
1889 * This will get called when the user removes a LUN to disable that LUN
1890 * on every bus that is attached to CTL.
1891 */
1892static int
1893ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id)
1894{
1895 struct ctlfe_softc *softc;
1896 struct ctlfe_lun_softc *lun_softc;
1897
1898 softc = (struct ctlfe_softc *)arg;
1899
1900 mtx_lock(&softc->lun_softc_mtx);
1901 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) {
1902 struct cam_path *path;
1903
1904 path = lun_softc->periph->path;
1905
1906 if ((xpt_path_target_id(path) == targ_id.id)
1907 && (xpt_path_lun_id(path) == lun_id)) {
1908 break;
1909 }
1910 }
1911 if (lun_softc == NULL) {
1912 mtx_unlock(&softc->lun_softc_mtx);
1913 printf("%s: can't find target %d lun %d\n", __func__,
1914 targ_id.id, lun_id);
1915 return (1);
1916 }
1917 cam_periph_acquire(lun_softc->periph);
1918 mtx_unlock(&softc->lun_softc_mtx);
1919
1920 cam_periph_lock(lun_softc->periph);
1921 cam_periph_invalidate(lun_softc->periph);
1922 cam_periph_unlock(lun_softc->periph);
1923 cam_periph_release(lun_softc->periph);
1924 return (0);
1925}
1926
1927static void
1928ctlfe_dump_sim(struct cam_sim *sim)
1929{
1930
1931 printf("%s%d: max tagged openings: %d, max dev openings: %d\n",
1932 sim->sim_name, sim->unit_number,
1933 sim->max_tagged_dev_openings, sim->max_dev_openings);
1934}
1935
1936/*
1937 * Assumes that the SIM lock is held.
1938 */
1939static void
1940ctlfe_dump_queue(struct ctlfe_lun_softc *softc)
1941{
1942 struct ccb_hdr *hdr;
1943 struct cam_periph *periph;
1944 int num_items;
1945
1946 periph = softc->periph;
1947 num_items = 0;
1948
1949 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) {
1950 union ctl_io *io = hdr->io_ptr;
1951
1952 num_items++;
1953
1954 /*
1955 * Only regular SCSI I/O is put on the work
1956 * queue, so we can print sense here. There may be no
1957 * sense if it's no the queue for a DMA, but this serves to
1958 * print out the CCB as well.
1959 *
1960 * XXX KDM switch this over to scsi_sense_print() when
1961 * CTL is merged in with CAM.
1962 */
1963 ctl_io_error_print(io, NULL);
1964
1965 /*
1966 * Print DMA status if we are DMA_QUEUED.
1967 */
1968 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
1969 xpt_print(periph->path,
1970 "Total %u, Current %u, Resid %u\n",
1971 io->scsiio.kern_total_len,
1972 io->scsiio.kern_data_len,
1973 io->scsiio.kern_data_resid);
1974 }
1975 }
1976
1977 xpt_print(periph->path, "%d requests total waiting for CCBs\n",
1978 num_items);
1979 xpt_print(periph->path, "%ju CCBs outstanding (%ju allocated, %ju "
1980 "freed)\n", (uintmax_t)(softc->ccbs_alloced -
1981 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced,
1982 (uintmax_t)softc->ccbs_freed);
1983 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju "
1984 "returned\n", (uintmax_t)(softc->ctios_sent -
1985 softc->ctios_returned), softc->ctios_sent,
1986 softc->ctios_returned);
1987}
1988
1989/*
1990 * Datamove/done routine called by CTL. Put ourselves on the queue to
1991 * receive a CCB from CAM so we can queue the continue I/O request down
1992 * to the adapter.
1993 */
1994static void
1995ctlfe_datamove(union ctl_io *io)
1996{
1997 union ccb *ccb;
1998 struct cam_periph *periph;
1999 struct ctlfe_lun_softc *softc;
2000
2001 KASSERT(io->io_hdr.io_type == CTL_IO_SCSI,
2002 ("Unexpected io_type (%d) in ctlfe_datamove", io->io_hdr.io_type));
2003
2004 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
2005 periph = xpt_path_periph(ccb->ccb_h.path);
2006 cam_periph_lock(periph);
2007 softc = (struct ctlfe_lun_softc *)periph->softc;
2008 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
2009 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
2010 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
2011 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
2012 periph_links.tqe);
2013 xpt_schedule(periph, /*priority*/ 1);
2014 cam_periph_unlock(periph);
2015}
2016
2017static void
2018ctlfe_done(union ctl_io *io)
2019{
2020 union ccb *ccb;
2021 struct cam_periph *periph;
2022 struct ctlfe_lun_softc *softc;
2023
2024 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
2025 periph = xpt_path_periph(ccb->ccb_h.path);
2026 cam_periph_lock(periph);
2027 softc = (struct ctlfe_lun_softc *)periph->softc;
2028
2029 if (io->io_hdr.io_type == CTL_IO_TASK) {
2030 /*
2031 * Task management commands don't require any further
2032 * communication back to the adapter. Requeue the CCB
2033 * to the adapter, and free the CTL I/O.
2034 */
2035 xpt_print(ccb->ccb_h.path, "%s: returning task I/O "
2036 "tag %#x seq %#x\n", __func__,
2037 ccb->cin1.tag_id, ccb->cin1.seq_id);
2038 /*
2039 * Send the notify acknowledge down to the SIM, to let it
2040 * know we processed the task management command.
2041 */
2042 ccb->ccb_h.status = CAM_REQ_INPROG;
2043 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
2044 xpt_action(ccb);
2045 } else {
2046 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
2047 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
2048 periph_links.tqe);
2049 xpt_schedule(periph, /*priority*/ 1);
2050 }
2051
2052 cam_periph_unlock(periph);
2053}
2054
2055static void
2056ctlfe_dump(void)
2057{
2058 struct ctlfe_softc *bus_softc;
2059 struct ctlfe_lun_softc *lun_softc;
2060
2061 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) {
2062 ctlfe_dump_sim(bus_softc->sim);
2063 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links)
2064 ctlfe_dump_queue(lun_softc);
2065 }
2066}