1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008, 2009 Silicon Graphics International Corp.
5 * Copyright (c) 2014-2015 Alexander Motin <[email protected]>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification.
14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
15 * substantially similar to the "NO WARRANTY" disclaimer below
16 * ("Disclaimer") and any redistribution must be conditioned upon
17 * including a substantially similar Disclaimer requirement for further
18 * binary redistribution.
19 *
20 * NO WARRANTY
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGES.
32 *
33 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/scsi_ctl.c#4 $
34 */
35 /*
36 * Peripheral driver interface between CAM and CTL (CAM Target Layer).
37 *
38 * Author: Ken Merry <[email protected]>
39 */
40
41 #include <sys/cdefs.h>
42 #include <sys/param.h>
43 #include <sys/queue.h>
44 #include <sys/systm.h>
45 #include <sys/kernel.h>
46 #include <sys/lock.h>
47 #include <sys/mutex.h>
48 #include <sys/condvar.h>
49 #include <sys/malloc.h>
50 #include <sys/bus.h>
51 #include <sys/endian.h>
52 #include <sys/sbuf.h>
53 #include <sys/sysctl.h>
54 #include <sys/types.h>
55 #include <sys/systm.h>
56 #include <sys/taskqueue.h>
57 #include <machine/bus.h>
58
59 #include <cam/cam.h>
60 #include <cam/cam_ccb.h>
61 #include <cam/cam_periph.h>
62 #include <cam/cam_queue.h>
63 #include <cam/cam_xpt_periph.h>
64 #include <cam/cam_debug.h>
65 #include <cam/cam_sim.h>
66 #include <cam/cam_xpt.h>
67
68 #include <cam/scsi/scsi_all.h>
69 #include <cam/scsi/scsi_message.h>
70
71 #include <cam/ctl/ctl_io.h>
72 #include <cam/ctl/ctl.h>
73 #include <cam/ctl/ctl_frontend.h>
74 #include <cam/ctl/ctl_util.h>
75 #include <cam/ctl/ctl_error.h>
76
77 struct ctlfe_softc {
78 struct ctl_port port;
79 path_id_t path_id;
80 target_id_t target_id;
81 uint32_t hba_misc;
82 u_int maxio;
83 struct cam_sim *sim;
84 char port_name[DEV_IDLEN];
85 struct mtx lun_softc_mtx;
86 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list;
87 STAILQ_ENTRY(ctlfe_softc) links;
88 };
89
90 STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list;
91 struct mtx ctlfe_list_mtx;
92 static char ctlfe_mtx_desc[] = "ctlfelist";
93
94 typedef enum {
95 CTLFE_LUN_NONE = 0x00,
96 CTLFE_LUN_WILDCARD = 0x01
97 } ctlfe_lun_flags;
98
99 struct ctlfe_lun_softc {
100 struct ctlfe_softc *parent_softc;
101 struct cam_periph *periph;
102 ctlfe_lun_flags flags;
103 int ctios_sent; /* Number of active CTIOs */
104 int refcount; /* Number of active xpt_action() */
105 int atios_alloced; /* Number of ATIOs not freed */
106 int inots_alloced; /* Number of INOTs not freed */
107 struct task refdrain_task;
108 STAILQ_HEAD(, ccb_hdr) work_queue;
109 LIST_HEAD(, ccb_hdr) atio_list; /* List of ATIOs queued to SIM. */
110 LIST_HEAD(, ccb_hdr) inot_list; /* List of INOTs queued to SIM. */
111 STAILQ_ENTRY(ctlfe_lun_softc) links;
112 };
113
114 typedef enum {
115 CTLFE_CMD_NONE = 0x00,
116 CTLFE_CMD_PIECEWISE = 0x01
117 } ctlfe_cmd_flags;
118
119 struct ctlfe_cmd_info {
120 int cur_transfer_index;
121 size_t cur_transfer_off;
122 ctlfe_cmd_flags flags;
123 /*
124 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16
125 * bytes on amd64. So with 32 elements, this is 256 bytes on
126 * i386 and 512 bytes on amd64.
127 */
128 #define CTLFE_MAX_SEGS 32
129 bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS];
130 };
131
132 /*
133 * When we register the adapter/bus, request that this many ctl_ios be
134 * allocated. This should be the maximum supported by the adapter, but we
135 * currently don't have a way to get that back from the path inquiry.
136 * XXX KDM add that to the path inquiry.
137 */
138 #define CTLFE_REQ_CTL_IO 4096
139 /*
140 * Number of Accept Target I/O CCBs to allocate and queue down to the
141 * adapter per LUN.
142 * XXX KDM should this be controlled by CTL?
143 */
144 #define CTLFE_ATIO_PER_LUN 1024
145 /*
146 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to
147 * allocate and queue down to the adapter per LUN.
148 * XXX KDM should this be controlled by CTL?
149 */
150 #define CTLFE_IN_PER_LUN 1024
151
152 /*
153 * Timeout (in seconds) on CTIO CCB doing DMA or sending status
154 */
155 #define CTLFE_TIMEOUT 5
156
157 /*
158 * Turn this on to enable extra debugging prints.
159 */
160 #if 0
161 #define CTLFE_DEBUG
162 #endif
163
164 MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface");
165
166 #define io_ptr ppriv_ptr0
167
168 /* This is only used in the CTIO */
169 #define ccb_atio ppriv_ptr1
170
171 #define PRIV_CCB(io) ((io)->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptrs[0])
172 #define PRIV_INFO(io) ((io)->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptrs[1])
173
174 static int ctlfeinitialize(void);
175 static int ctlfeshutdown(void);
176 static periph_init_t ctlfeperiphinit;
177 static periph_deinit_t ctlfeperiphdeinit;
178 static void ctlfeasync(void *callback_arg, uint32_t code,
179 struct cam_path *path, void *arg);
180 static periph_ctor_t ctlferegister;
181 static periph_oninv_t ctlfeoninvalidate;
182 static periph_dtor_t ctlfecleanup;
183 static periph_start_t ctlfestart;
184 static void ctlfedone(struct cam_periph *periph,
185 union ccb *done_ccb);
186
187 static void ctlfe_onoffline(void *arg, int online);
188 static void ctlfe_online(void *arg);
189 static void ctlfe_offline(void *arg);
190 static int ctlfe_lun_enable(void *arg, int lun_id);
191 static int ctlfe_lun_disable(void *arg, int lun_id);
192 static void ctlfe_dump_sim(struct cam_sim *sim);
193 static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc);
194 static void ctlfe_datamove(union ctl_io *io);
195 static void ctlfe_done(union ctl_io *io);
196 static void ctlfe_dump(void);
197 static void ctlfe_free_ccb(struct cam_periph *periph,
198 union ccb *ccb);
199 static void ctlfe_requeue_ccb(struct cam_periph *periph,
200 union ccb *ccb, int unlock);
201
202 static struct periph_driver ctlfe_driver =
203 {
204 ctlfeperiphinit, "ctl",
205 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0,
206 CAM_PERIPH_DRV_EARLY,
207 ctlfeperiphdeinit
208 };
209
210 static struct ctl_frontend ctlfe_frontend =
211 {
212 .name = "camtgt",
213 .init = ctlfeinitialize,
214 .fe_dump = ctlfe_dump,
215 .shutdown = ctlfeshutdown,
216 };
217 CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend);
218
219 static int
ctlfeinitialize(void)220 ctlfeinitialize(void)
221 {
222
223 STAILQ_INIT(&ctlfe_softc_list);
224 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF);
225 periphdriver_register(&ctlfe_driver);
226 return (0);
227 }
228
229 static int
ctlfeshutdown(void)230 ctlfeshutdown(void)
231 {
232 int error;
233
234 error = periphdriver_unregister(&ctlfe_driver);
235 if (error != 0)
236 return (error);
237 mtx_destroy(&ctlfe_list_mtx);
238 return (0);
239 }
240
241 static void
ctlfeperiphinit(void)242 ctlfeperiphinit(void)
243 {
244 cam_status status;
245
246 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED |
247 AC_CONTRACT, ctlfeasync, NULL, NULL);
248 if (status != CAM_REQ_CMP) {
249 printf("ctl: Failed to attach async callback due to CAM "
250 "status 0x%x!\n", status);
251 }
252 }
253
254 static int
ctlfeperiphdeinit(void)255 ctlfeperiphdeinit(void)
256 {
257
258 /* XXX: It would be good to tear down active ports here. */
259 if (!TAILQ_EMPTY(&ctlfe_driver.units))
260 return (EBUSY);
261 xpt_register_async(0, ctlfeasync, NULL, NULL);
262 return (0);
263 }
264
265 static void
ctlfeasync(void * callback_arg,uint32_t code,struct cam_path * path,void * arg)266 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
267 {
268 struct ctlfe_softc *softc;
269
270 #ifdef CTLFEDEBUG
271 printf("%s: entered\n", __func__);
272 #endif
273
274 mtx_lock(&ctlfe_list_mtx);
275 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
276 if (softc->path_id == xpt_path_path_id(path))
277 break;
278 }
279 mtx_unlock(&ctlfe_list_mtx);
280
281 /*
282 * When a new path gets registered, and it is capable of target
283 * mode, go ahead and attach. Later on, we may need to be more
284 * selective, but for now this will be sufficient.
285 */
286 switch (code) {
287 case AC_PATH_REGISTERED: {
288 struct ctl_port *port;
289 struct ccb_pathinq *cpi;
290 int retval;
291
292 cpi = (struct ccb_pathinq *)arg;
293
294 /* Don't attach if it doesn't support target mode */
295 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) {
296 #ifdef CTLFEDEBUG
297 printf("%s: SIM %s%d doesn't support target mode\n",
298 __func__, cpi->dev_name, cpi->unit_number);
299 #endif
300 break;
301 }
302
303 if (softc != NULL) {
304 #ifdef CTLFEDEBUG
305 printf("%s: CTL port for CAM path %u already exists\n",
306 __func__, xpt_path_path_id(path));
307 #endif
308 break;
309 }
310
311 /*
312 * We're in an interrupt context here, so we have to
313 * use M_NOWAIT. Of course this means trouble if we
314 * can't allocate memory.
315 */
316 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO);
317 if (softc == NULL) {
318 printf("%s: unable to malloc %zd bytes for softc\n",
319 __func__, sizeof(*softc));
320 return;
321 }
322
323 softc->path_id = cpi->ccb_h.path_id;
324 softc->target_id = cpi->initiator_id;
325 softc->sim = xpt_path_sim(path);
326 softc->hba_misc = cpi->hba_misc;
327 if (cpi->maxio != 0)
328 softc->maxio = cpi->maxio;
329 else
330 softc->maxio = DFLTPHYS;
331 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF);
332 STAILQ_INIT(&softc->lun_softc_list);
333
334 port = &softc->port;
335 port->frontend = &ctlfe_frontend;
336
337 /*
338 * XXX KDM should we be more accurate here ?
339 */
340 if (cpi->transport == XPORT_FC)
341 port->port_type = CTL_PORT_FC;
342 else if (cpi->transport == XPORT_SAS)
343 port->port_type = CTL_PORT_SAS;
344 else
345 port->port_type = CTL_PORT_SCSI;
346
347 /* XXX KDM what should the real number be here? */
348 port->num_requested_ctl_io = CTLFE_REQ_CTL_IO;
349 snprintf(softc->port_name, sizeof(softc->port_name),
350 "%s%d", cpi->dev_name, cpi->unit_number);
351 /*
352 * XXX KDM it would be nice to allocate storage in the
353 * frontend structure itself.
354 */
355 port->port_name = softc->port_name;
356 port->physical_port = cpi->bus_id;
357 port->virtual_port = 0;
358 port->port_online = ctlfe_online;
359 port->port_offline = ctlfe_offline;
360 port->onoff_arg = softc;
361 port->lun_enable = ctlfe_lun_enable;
362 port->lun_disable = ctlfe_lun_disable;
363 port->targ_lun_arg = softc;
364 port->fe_datamove = ctlfe_datamove;
365 port->fe_done = ctlfe_done;
366 port->targ_port = -1;
367
368 retval = ctl_port_register(port);
369 if (retval != 0) {
370 printf("%s: ctl_port_register() failed with "
371 "error %d!\n", __func__, retval);
372 mtx_destroy(&softc->lun_softc_mtx);
373 free(softc, M_CTLFE);
374 break;
375 } else {
376 mtx_lock(&ctlfe_list_mtx);
377 STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links);
378 mtx_unlock(&ctlfe_list_mtx);
379 }
380
381 break;
382 }
383 case AC_PATH_DEREGISTERED: {
384 if (softc != NULL) {
385 /*
386 * XXX KDM are we certain at this point that there
387 * are no outstanding commands for this frontend?
388 */
389 mtx_lock(&ctlfe_list_mtx);
390 STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc,
391 links);
392 mtx_unlock(&ctlfe_list_mtx);
393 ctl_port_deregister(&softc->port);
394 mtx_destroy(&softc->lun_softc_mtx);
395 free(softc, M_CTLFE);
396 }
397 break;
398 }
399 case AC_CONTRACT: {
400 struct ac_contract *ac;
401
402 ac = (struct ac_contract *)arg;
403
404 switch (ac->contract_number) {
405 case AC_CONTRACT_DEV_CHG: {
406 struct ac_device_changed *dev_chg;
407 int retval;
408
409 dev_chg = (struct ac_device_changed *)ac->contract_data;
410
411 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n",
412 __func__, dev_chg->wwpn, dev_chg->port,
413 xpt_path_path_id(path), dev_chg->target,
414 (dev_chg->arrived == 0) ? "left" : "arrived");
415
416 if (softc == NULL) {
417 printf("%s: CTL port for CAM path %u not "
418 "found!\n", __func__,
419 xpt_path_path_id(path));
420 break;
421 }
422 if (dev_chg->arrived != 0) {
423 retval = ctl_add_initiator(&softc->port,
424 dev_chg->target, dev_chg->wwpn, NULL);
425 } else {
426 retval = ctl_remove_initiator(&softc->port,
427 dev_chg->target);
428 }
429
430 if (retval < 0) {
431 printf("%s: could not %s port %d iid %u "
432 "WWPN %#jx!\n", __func__,
433 (dev_chg->arrived != 0) ? "add" :
434 "remove", softc->port.targ_port,
435 dev_chg->target,
436 (uintmax_t)dev_chg->wwpn);
437 }
438 break;
439 }
440 default:
441 printf("%s: unsupported contract number %ju\n",
442 __func__, (uintmax_t)ac->contract_number);
443 break;
444 }
445 break;
446 }
447 default:
448 break;
449 }
450 }
451
452 static cam_status
ctlferegister(struct cam_periph * periph,void * arg)453 ctlferegister(struct cam_periph *periph, void *arg)
454 {
455 struct ctlfe_softc *bus_softc;
456 struct ctlfe_lun_softc *softc;
457 union ccb ccb;
458 cam_status status;
459 int i, acstatus;
460
461 softc = (struct ctlfe_lun_softc *)arg;
462 bus_softc = softc->parent_softc;
463
464 STAILQ_INIT(&softc->work_queue);
465 LIST_INIT(&softc->atio_list);
466 LIST_INIT(&softc->inot_list);
467 softc->periph = periph;
468 periph->softc = softc;
469
470 /* Increase device openings to maximum for the SIM. */
471 if (bus_softc->sim->max_tagged_dev_openings >
472 bus_softc->sim->max_dev_openings) {
473 cam_release_devq(periph->path,
474 /*relsim_flags*/RELSIM_ADJUST_OPENINGS,
475 /*openings*/bus_softc->sim->max_tagged_dev_openings,
476 /*timeout*/0,
477 /*getcount_only*/1);
478 }
479
480 memset(&ccb, 0, sizeof(ccb));
481 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
482 ccb.ccb_h.func_code = XPT_EN_LUN;
483 ccb.cel.grp6_len = 0;
484 ccb.cel.grp7_len = 0;
485 ccb.cel.enable = 1;
486 xpt_action(&ccb);
487 status = (ccb.ccb_h.status & CAM_STATUS_MASK);
488 if (status != CAM_REQ_CMP) {
489 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n",
490 __func__, ccb.ccb_h.status);
491 return (status);
492 }
493
494 status = CAM_REQ_CMP;
495
496 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) {
497 union ccb *new_ccb;
498 union ctl_io *new_io;
499 struct ctlfe_cmd_info *cmd_info;
500
501 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
502 M_ZERO|M_NOWAIT);
503 if (new_ccb == NULL) {
504 status = CAM_RESRC_UNAVAIL;
505 break;
506 }
507 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
508 if (new_io == NULL) {
509 free(new_ccb, M_CTLFE);
510 status = CAM_RESRC_UNAVAIL;
511 break;
512 }
513 cmd_info = malloc(sizeof(*cmd_info), M_CTLFE,
514 M_ZERO | M_NOWAIT);
515 if (cmd_info == NULL) {
516 ctl_free_io(new_io);
517 free(new_ccb, M_CTLFE);
518 status = CAM_RESRC_UNAVAIL;
519 break;
520 }
521 PRIV_INFO(new_io) = cmd_info;
522 softc->atios_alloced++;
523 new_ccb->ccb_h.io_ptr = new_io;
524 LIST_INSERT_HEAD(&softc->atio_list, &new_ccb->ccb_h, periph_links.le);
525
526 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, CAM_PRIORITY_NONE);
527 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
528 new_ccb->ccb_h.cbfcnp = ctlfedone;
529 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
530 xpt_action(new_ccb);
531 status = new_ccb->ccb_h.status;
532 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
533 free(cmd_info, M_CTLFE);
534 ctl_free_io(new_io);
535 free(new_ccb, M_CTLFE);
536 break;
537 }
538 }
539
540 acstatus = cam_periph_acquire(periph);
541 if (acstatus != 0) {
542 xpt_print(periph->path, "%s: could not acquire reference "
543 "count, status = %#x\n", __func__, acstatus);
544 return (CAM_REQ_CMP_ERR);
545 }
546
547 if (i == 0) {
548 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, "
549 "status 0x%x\n", __func__, status);
550 return (CAM_REQ_CMP_ERR);
551 }
552
553 for (i = 0; i < CTLFE_IN_PER_LUN; i++) {
554 union ccb *new_ccb;
555 union ctl_io *new_io;
556
557 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
558 M_ZERO|M_NOWAIT);
559 if (new_ccb == NULL) {
560 status = CAM_RESRC_UNAVAIL;
561 break;
562 }
563 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
564 if (new_io == NULL) {
565 free(new_ccb, M_CTLFE);
566 status = CAM_RESRC_UNAVAIL;
567 break;
568 }
569 softc->inots_alloced++;
570 new_ccb->ccb_h.io_ptr = new_io;
571 LIST_INSERT_HEAD(&softc->inot_list, &new_ccb->ccb_h, periph_links.le);
572
573 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, CAM_PRIORITY_NONE);
574 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
575 new_ccb->ccb_h.cbfcnp = ctlfedone;
576 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
577 xpt_action(new_ccb);
578 status = new_ccb->ccb_h.status;
579 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
580 /*
581 * Note that we don't free the CCB here. If the
582 * status is not CAM_REQ_INPROG, then we're
583 * probably talking to a SIM that says it is
584 * target-capable but doesn't support the
585 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the
586 * older API. In that case, it'll call xpt_done()
587 * on the CCB, and we need to free it in our done
588 * routine as a result.
589 */
590 break;
591 }
592 }
593 if ((i == 0)
594 || (status != CAM_REQ_INPROG)) {
595 xpt_print(periph->path, "%s: could not allocate immediate "
596 "notify CCBs, status 0x%x\n", __func__, status);
597 return (CAM_REQ_CMP_ERR);
598 }
599 mtx_lock(&bus_softc->lun_softc_mtx);
600 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links);
601 mtx_unlock(&bus_softc->lun_softc_mtx);
602 return (CAM_REQ_CMP);
603 }
604
605 static void
ctlfeoninvalidate(struct cam_periph * periph)606 ctlfeoninvalidate(struct cam_periph *periph)
607 {
608 struct ctlfe_lun_softc *softc = (struct ctlfe_lun_softc *)periph->softc;
609 struct ctlfe_softc *bus_softc;
610 union ccb ccb;
611 struct ccb_hdr *hdr;
612 cam_status status;
613
614 /* Abort all ATIOs and INOTs queued to SIM. */
615 memset(&ccb, 0, sizeof(ccb));
616 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
617 ccb.ccb_h.func_code = XPT_ABORT;
618 LIST_FOREACH(hdr, &softc->atio_list, periph_links.le) {
619 ccb.cab.abort_ccb = (union ccb *)hdr;
620 xpt_action(&ccb);
621 }
622 LIST_FOREACH(hdr, &softc->inot_list, periph_links.le) {
623 ccb.cab.abort_ccb = (union ccb *)hdr;
624 xpt_action(&ccb);
625 }
626
627 /* Disable the LUN in SIM. */
628 ccb.ccb_h.func_code = XPT_EN_LUN;
629 ccb.cel.grp6_len = 0;
630 ccb.cel.grp7_len = 0;
631 ccb.cel.enable = 0;
632 xpt_action(&ccb);
633 status = (ccb.ccb_h.status & CAM_STATUS_MASK);
634 if (status != CAM_REQ_CMP) {
635 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n",
636 __func__, ccb.ccb_h.status);
637 /*
638 * XXX KDM what do we do now?
639 */
640 }
641
642 bus_softc = softc->parent_softc;
643 mtx_lock(&bus_softc->lun_softc_mtx);
644 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links);
645 mtx_unlock(&bus_softc->lun_softc_mtx);
646 }
647
648 static void
ctlfecleanup(struct cam_periph * periph)649 ctlfecleanup(struct cam_periph *periph)
650 {
651 struct ctlfe_lun_softc *softc;
652
653 softc = (struct ctlfe_lun_softc *)periph->softc;
654
655 KASSERT(softc->ctios_sent == 0, ("%s: ctios_sent %d != 0",
656 __func__, softc->ctios_sent));
657 KASSERT(softc->refcount == 0, ("%s: refcount %d != 0",
658 __func__, softc->refcount));
659 KASSERT(softc->atios_alloced == 0, ("%s: atios_alloced %d != 0",
660 __func__, softc->atios_alloced));
661 KASSERT(softc->inots_alloced == 0, ("%s: inots_alloced %d != 0",
662 __func__, softc->inots_alloced));
663
664 free(softc, M_CTLFE);
665 }
666
667 static void
ctlfedata(struct ctlfe_lun_softc * softc,union ctl_io * io,ccb_flags * flags,uint8_t ** data_ptr,uint32_t * dxfer_len,uint16_t * sglist_cnt)668 ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io,
669 ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len,
670 uint16_t *sglist_cnt)
671 {
672 struct ctlfe_softc *bus_softc;
673 struct ctlfe_cmd_info *cmd_info;
674 struct ctl_sg_entry *ctl_sglist;
675 bus_dma_segment_t *cam_sglist;
676 size_t off;
677 int i, idx;
678
679 cmd_info = PRIV_INFO(io);
680 bus_softc = softc->parent_softc;
681
682 /*
683 * Set the direction, relative to the initiator.
684 */
685 *flags &= ~CAM_DIR_MASK;
686 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN)
687 *flags |= CAM_DIR_IN;
688 else
689 *flags |= CAM_DIR_OUT;
690
691 *flags &= ~CAM_DATA_MASK;
692 idx = cmd_info->cur_transfer_index;
693 off = cmd_info->cur_transfer_off;
694 cmd_info->flags &= ~CTLFE_CMD_PIECEWISE;
695 if (io->scsiio.kern_sg_entries == 0) { /* No S/G list. */
696
697 /* One time shift for SRR offset. */
698 off += io->scsiio.ext_data_filled;
699 io->scsiio.ext_data_filled = 0;
700
701 *data_ptr = io->scsiio.kern_data_ptr + off;
702 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) {
703 *dxfer_len = io->scsiio.kern_data_len - off;
704 } else {
705 *dxfer_len = bus_softc->maxio;
706 cmd_info->cur_transfer_off += bus_softc->maxio;
707 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
708 }
709 *sglist_cnt = 0;
710
711 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
712 *flags |= CAM_DATA_PADDR;
713 else
714 *flags |= CAM_DATA_VADDR;
715 } else { /* S/G list with physical or virtual pointers. */
716 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
717
718 /* One time shift for SRR offset. */
719 while (io->scsiio.ext_data_filled >= ctl_sglist[idx].len - off) {
720 io->scsiio.ext_data_filled -= ctl_sglist[idx].len - off;
721 idx++;
722 off = 0;
723 }
724 off += io->scsiio.ext_data_filled;
725 io->scsiio.ext_data_filled = 0;
726
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)(uintptr_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
763 static void
ctlfestart(struct cam_periph * periph,union ccb * start_ccb)764 ctlfestart(struct cam_periph *periph, union ccb *start_ccb)
765 {
766 struct ctlfe_lun_softc *softc;
767 struct ctlfe_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
779 next:
780 /* Take the ATIO off the work queue */
781 ccb_h = STAILQ_FIRST(&softc->work_queue);
782 if (ccb_h == NULL) {
783 xpt_release_ccb(start_ccb);
784 return;
785 }
786 STAILQ_REMOVE_HEAD(&softc->work_queue, periph_links.stqe);
787 atio = (struct ccb_accept_tio *)ccb_h;
788 io = (union ctl_io *)ccb_h->io_ptr;
789 csio = &start_ccb->csio;
790
791 flags = atio->ccb_h.flags &
792 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK);
793 cmd_info = PRIV_INFO(io);
794 cmd_info->cur_transfer_index = 0;
795 cmd_info->cur_transfer_off = 0;
796 cmd_info->flags = 0;
797
798 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
799 /*
800 * Datamove call, we need to setup the S/G list.
801 */
802 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len,
803 &csio->sglist_cnt);
804 } else {
805 /*
806 * We're done, send status back.
807 */
808 if ((io->io_hdr.flags & CTL_FLAG_ABORT) &&
809 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) {
810 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
811
812 /* Tell the SIM that we've aborted this ATIO */
813 #ifdef CTLFEDEBUG
814 printf("%s: tag %04x abort\n", __func__, atio->tag_id);
815 #endif
816 KASSERT(atio->ccb_h.func_code == XPT_ACCEPT_TARGET_IO,
817 ("func_code %#x is not ATIO", atio->ccb_h.func_code));
818 start_ccb->ccb_h.func_code = XPT_ABORT;
819 start_ccb->cab.abort_ccb = (union ccb *)atio;
820 xpt_action(start_ccb);
821
822 ctlfe_requeue_ccb(periph, (union ccb *)atio,
823 /* unlock */0);
824
825 /* XPT_ABORT is not queued, so we can take next I/O. */
826 goto next;
827 }
828 data_ptr = NULL;
829 dxfer_len = 0;
830 csio->sglist_cnt = 0;
831 }
832 scsi_status = 0;
833 if ((io->io_hdr.flags & CTL_FLAG_STATUS_QUEUED) &&
834 (cmd_info->flags & CTLFE_CMD_PIECEWISE) == 0 &&
835 ((io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) == 0 ||
836 io->io_hdr.status == CTL_SUCCESS)) {
837 flags |= CAM_SEND_STATUS;
838 scsi_status = io->scsiio.scsi_status;
839 csio->sense_len = io->scsiio.sense_len;
840 #ifdef CTLFEDEBUG
841 printf("%s: tag %04x status %x\n", __func__,
842 atio->tag_id, io->io_hdr.status);
843 #endif
844 if (csio->sense_len != 0) {
845 csio->sense_data = io->scsiio.sense_data;
846 flags |= CAM_SEND_SENSE;
847 }
848 }
849
850 #ifdef CTLFEDEBUG
851 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__,
852 (flags & CAM_SEND_STATUS) ? "done" : "datamove",
853 atio->tag_id, flags, data_ptr, dxfer_len);
854 #endif
855
856 /*
857 * Valid combinations:
858 * - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0,
859 * sglist_cnt = 0
860 * - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0,
861 * sglist_cnt = 0
862 * - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0,
863 * sglist_cnt != 0
864 */
865 #ifdef CTLFEDEBUG
866 if (((flags & CAM_SEND_STATUS)
867 && (((flags & CAM_DATA_SG) != 0)
868 || (dxfer_len != 0)
869 || (csio->sglist_cnt != 0)))
870 || (((flags & CAM_SEND_STATUS) == 0)
871 && (dxfer_len == 0))
872 || ((flags & CAM_DATA_SG)
873 && (csio->sglist_cnt == 0))
874 || (((flags & CAM_DATA_SG) == 0)
875 && (csio->sglist_cnt != 0))) {
876 printf("%s: tag %04x cdb %02x flags %#x dxfer_len "
877 "%d sg %u\n", __func__, atio->tag_id,
878 atio_cdb_ptr(atio)[0], flags, dxfer_len,
879 csio->sglist_cnt);
880 printf("%s: tag %04x io status %#x\n", __func__,
881 atio->tag_id, io->io_hdr.status);
882 }
883 #endif
884 cam_fill_ctio(csio,
885 /*retries*/ 2,
886 ctlfedone,
887 flags,
888 (flags & CAM_TAG_ACTION_VALID) ? MSG_SIMPLE_Q_TAG : 0,
889 atio->tag_id,
890 atio->init_id,
891 scsi_status,
892 /*data_ptr*/ data_ptr,
893 /*dxfer_len*/ dxfer_len,
894 /*timeout*/ CTLFE_TIMEOUT * 1000);
895 start_ccb->ccb_h.flags |= CAM_UNLOCKED;
896 start_ccb->ccb_h.ccb_atio = atio;
897 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED)
898 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
899 io->io_hdr.flags &= ~(CTL_FLAG_DMA_QUEUED | CTL_FLAG_STATUS_QUEUED);
900
901 softc->ctios_sent++;
902 softc->refcount++;
903 cam_periph_unlock(periph);
904 xpt_action(start_ccb);
905 cam_periph_lock(periph);
906 softc->refcount--;
907
908 /*
909 * If we still have work to do, ask for another CCB.
910 */
911 if (!STAILQ_EMPTY(&softc->work_queue))
912 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
913 }
914
915 static void
ctlfe_drain(void * context,int pending)916 ctlfe_drain(void *context, int pending)
917 {
918 struct cam_periph *periph = context;
919 struct ctlfe_lun_softc *softc = periph->softc;
920
921 cam_periph_lock(periph);
922 while (softc->refcount != 0) {
923 cam_periph_sleep(periph, &softc->refcount, PRIBIO,
924 "ctlfe_drain", 1);
925 }
926 cam_periph_unlock(periph);
927 cam_periph_release(periph);
928 }
929
930 static void
ctlfe_free_ccb(struct cam_periph * periph,union ccb * ccb)931 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb)
932 {
933 struct ctlfe_lun_softc *softc;
934 union ctl_io *io;
935 struct ctlfe_cmd_info *cmd_info;
936
937 softc = (struct ctlfe_lun_softc *)periph->softc;
938 io = ccb->ccb_h.io_ptr;
939
940 switch (ccb->ccb_h.func_code) {
941 case XPT_ACCEPT_TARGET_IO:
942 softc->atios_alloced--;
943 cmd_info = PRIV_INFO(io);
944 free(cmd_info, M_CTLFE);
945 break;
946 case XPT_IMMEDIATE_NOTIFY:
947 case XPT_NOTIFY_ACKNOWLEDGE:
948 softc->inots_alloced--;
949 break;
950 default:
951 break;
952 }
953
954 ctl_free_io(io);
955 free(ccb, M_CTLFE);
956
957 KASSERT(softc->atios_alloced >= 0, ("%s: atios_alloced %d < 0",
958 __func__, softc->atios_alloced));
959 KASSERT(softc->inots_alloced >= 0, ("%s: inots_alloced %d < 0",
960 __func__, softc->inots_alloced));
961
962 /*
963 * If we have received all of our CCBs, we can release our
964 * reference on the peripheral driver. It will probably go away
965 * now.
966 */
967 if (softc->atios_alloced == 0 && softc->inots_alloced == 0) {
968 if (softc->refcount == 0) {
969 cam_periph_release_locked(periph);
970 } else {
971 TASK_INIT(&softc->refdrain_task, 0, ctlfe_drain, periph);
972 taskqueue_enqueue(taskqueue_thread,
973 &softc->refdrain_task);
974 }
975 }
976 }
977
978 /*
979 * Send the ATIO/INOT back to the SIM, or free it if periph was invalidated.
980 */
981 static void
ctlfe_requeue_ccb(struct cam_periph * periph,union ccb * ccb,int unlock)982 ctlfe_requeue_ccb(struct cam_periph *periph, union ccb *ccb, int unlock)
983 {
984 struct ctlfe_lun_softc *softc;
985 struct mtx *mtx;
986
987 if (periph->flags & CAM_PERIPH_INVALID) {
988 mtx = cam_periph_mtx(periph);
989 ctlfe_free_ccb(periph, ccb);
990 if (unlock)
991 mtx_unlock(mtx);
992 return;
993 }
994 softc = (struct ctlfe_lun_softc *)periph->softc;
995 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
996 LIST_INSERT_HEAD(&softc->atio_list, &ccb->ccb_h, periph_links.le);
997 else
998 LIST_INSERT_HEAD(&softc->inot_list, &ccb->ccb_h, periph_links.le);
999 if (unlock)
1000 cam_periph_unlock(periph);
1001
1002 /*
1003 * For a wildcard attachment, commands can come in with a specific
1004 * target/lun. Reset the target and LUN fields back to the wildcard
1005 * values before we send them back down to the SIM.
1006 */
1007 xpt_setup_ccb_flags(&ccb->ccb_h, periph->path, CAM_PRIORITY_NONE,
1008 ccb->ccb_h.flags);
1009
1010 xpt_action(ccb);
1011 }
1012
1013 static int
ctlfe_adjust_cdb(struct ccb_accept_tio * atio,uint32_t offset)1014 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset)
1015 {
1016 uint64_t lba;
1017 uint32_t num_blocks, nbc;
1018 uint8_t *cmdbyt = atio_cdb_ptr(atio);
1019
1020 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */
1021
1022 switch (cmdbyt[0]) {
1023 case READ_6:
1024 case WRITE_6:
1025 {
1026 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt;
1027 lba = scsi_3btoul(cdb->addr);
1028 lba &= 0x1fffff;
1029 num_blocks = cdb->length;
1030 if (num_blocks == 0)
1031 num_blocks = 256;
1032 lba += nbc;
1033 num_blocks -= nbc;
1034 scsi_ulto3b(lba, cdb->addr);
1035 cdb->length = num_blocks;
1036 break;
1037 }
1038 case READ_10:
1039 case WRITE_10:
1040 {
1041 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt;
1042 lba = scsi_4btoul(cdb->addr);
1043 num_blocks = scsi_2btoul(cdb->length);
1044 lba += nbc;
1045 num_blocks -= nbc;
1046 scsi_ulto4b(lba, cdb->addr);
1047 scsi_ulto2b(num_blocks, cdb->length);
1048 break;
1049 }
1050 case READ_12:
1051 case WRITE_12:
1052 {
1053 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt;
1054 lba = scsi_4btoul(cdb->addr);
1055 num_blocks = scsi_4btoul(cdb->length);
1056 lba += nbc;
1057 num_blocks -= nbc;
1058 scsi_ulto4b(lba, cdb->addr);
1059 scsi_ulto4b(num_blocks, cdb->length);
1060 break;
1061 }
1062 case READ_16:
1063 case WRITE_16:
1064 {
1065 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt;
1066 lba = scsi_8btou64(cdb->addr);
1067 num_blocks = scsi_4btoul(cdb->length);
1068 lba += nbc;
1069 num_blocks -= nbc;
1070 scsi_u64to8b(lba, cdb->addr);
1071 scsi_ulto4b(num_blocks, cdb->length);
1072 break;
1073 }
1074 default:
1075 return -1;
1076 }
1077 return (0);
1078 }
1079
1080 static void
ctlfedone(struct cam_periph * periph,union ccb * done_ccb)1081 ctlfedone(struct cam_periph *periph, union ccb *done_ccb)
1082 {
1083 struct ctlfe_lun_softc *softc;
1084 struct ctlfe_softc *bus_softc;
1085 struct ctlfe_cmd_info *cmd_info;
1086 struct ccb_accept_tio *atio = NULL;
1087 union ctl_io *io = NULL;
1088 struct mtx *mtx;
1089 cam_status status;
1090
1091 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0,
1092 ("CCB in ctlfedone() without CAM_UNLOCKED flag"));
1093 #ifdef CTLFE_DEBUG
1094 printf("%s: entered, func_code = %#x\n", __func__,
1095 done_ccb->ccb_h.func_code);
1096 #endif
1097
1098 /*
1099 * At this point CTL has no known use case for device queue freezes.
1100 * In case some SIM think different -- drop its freeze right here.
1101 */
1102 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1103 cam_release_devq(periph->path,
1104 /*relsim_flags*/0,
1105 /*reduction*/0,
1106 /*timeout*/0,
1107 /*getcount_only*/0);
1108 done_ccb->ccb_h.status &= ~CAM_DEV_QFRZN;
1109 }
1110
1111 softc = (struct ctlfe_lun_softc *)periph->softc;
1112 bus_softc = softc->parent_softc;
1113 mtx = cam_periph_mtx(periph);
1114 mtx_lock(mtx);
1115
1116 switch (done_ccb->ccb_h.func_code) {
1117 case XPT_ACCEPT_TARGET_IO: {
1118 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1119 atio = &done_ccb->atio;
1120 status = atio->ccb_h.status & CAM_STATUS_MASK;
1121 if (status != CAM_CDB_RECVD) {
1122 ctlfe_free_ccb(periph, done_ccb);
1123 goto out;
1124 }
1125
1126 resubmit:
1127 /*
1128 * Allocate a ctl_io, pass it to CTL, and wait for the
1129 * datamove or done.
1130 */
1131 mtx_unlock(mtx);
1132 io = done_ccb->ccb_h.io_ptr;
1133 cmd_info = PRIV_INFO(io);
1134 ctl_zero_io(io);
1135
1136 /* Save pointers on both sides */
1137 PRIV_CCB(io) = done_ccb;
1138 PRIV_INFO(io) = cmd_info;
1139 done_ccb->ccb_h.io_ptr = io;
1140
1141 /*
1142 * Only SCSI I/O comes down this path, resets, etc. come
1143 * down the immediate notify path below.
1144 */
1145 io->io_hdr.io_type = CTL_IO_SCSI;
1146 io->io_hdr.nexus.initid = atio->init_id;
1147 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1148 if (bus_softc->hba_misc & PIM_EXTLUNS) {
1149 io->io_hdr.nexus.targ_lun = ctl_decode_lun(
1150 CAM_EXTLUN_BYTE_SWIZZLE(atio->ccb_h.target_lun));
1151 } else {
1152 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun;
1153 }
1154 io->scsiio.priority = atio->priority;
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_ptr(atio), io->scsiio.cdb, io->scsiio.cdb_len);
1184
1185 #ifdef CTLFEDEBUG
1186 printf("%s: %u:%u:%u: tag %jx CDB %02x\n", __func__,
1187 io->io_hdr.nexus.initid,
1188 io->io_hdr.nexus.targ_port,
1189 io->io_hdr.nexus.targ_lun,
1190 io->scsiio.tag_num, io->scsiio.cdb[0]);
1191 #endif
1192
1193 ctl_queue(io);
1194 return;
1195 }
1196 case XPT_CONT_TARGET_IO: {
1197 int srr = 0;
1198 uint32_t srr_off = 0;
1199
1200 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio;
1201 io = (union ctl_io *)atio->ccb_h.io_ptr;
1202
1203 softc->ctios_sent--;
1204 #ifdef CTLFEDEBUG
1205 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n",
1206 __func__, atio->tag_id, done_ccb->ccb_h.flags);
1207 #endif
1208 /*
1209 * Handle SRR case were the data pointer is pushed back hack
1210 */
1211 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV
1212 && done_ccb->csio.msg_ptr != NULL
1213 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED
1214 && done_ccb->csio.msg_ptr[1] == 5
1215 && done_ccb->csio.msg_ptr[2] == 0) {
1216 srr = 1;
1217 srr_off =
1218 (done_ccb->csio.msg_ptr[3] << 24)
1219 | (done_ccb->csio.msg_ptr[4] << 16)
1220 | (done_ccb->csio.msg_ptr[5] << 8)
1221 | (done_ccb->csio.msg_ptr[6]);
1222 }
1223
1224 /*
1225 * If we have an SRR and we're still sending data, we
1226 * should be able to adjust offsets and cycle again.
1227 * It is possible only if offset is from this datamove.
1228 */
1229 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) &&
1230 srr_off >= io->scsiio.kern_rel_offset &&
1231 srr_off < io->scsiio.kern_rel_offset +
1232 io->scsiio.kern_data_len) {
1233 io->scsiio.kern_data_resid =
1234 io->scsiio.kern_rel_offset +
1235 io->scsiio.kern_data_len - srr_off;
1236 io->scsiio.ext_data_filled = srr_off;
1237 io->scsiio.io_hdr.status = CTL_STATUS_NONE;
1238 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
1239 xpt_release_ccb(done_ccb);
1240 STAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h,
1241 periph_links.stqe);
1242 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1243 break;
1244 }
1245
1246 /*
1247 * If status was being sent, the back end data is now history.
1248 * Hack it up and resubmit a new command with the CDB adjusted.
1249 * If the SIM does the right thing, all of the resid math
1250 * should work.
1251 */
1252 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1253 xpt_release_ccb(done_ccb);
1254 if (ctlfe_adjust_cdb(atio, srr_off) == 0) {
1255 done_ccb = (union ccb *)atio;
1256 goto resubmit;
1257 }
1258 /*
1259 * Fall through to doom....
1260 */
1261 }
1262
1263 if ((done_ccb->ccb_h.flags & CAM_SEND_STATUS) &&
1264 (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1265 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT;
1266
1267 /*
1268 * If we were sending status back to the initiator, free up
1269 * resources. If we were doing a datamove, call the
1270 * datamove done routine.
1271 */
1272 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1273 /*
1274 * If we asked to send sense data but it wasn't sent,
1275 * queue the I/O back to CTL for later REQUEST SENSE.
1276 */
1277 if ((done_ccb->ccb_h.flags & CAM_SEND_SENSE) != 0 &&
1278 (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP &&
1279 (done_ccb->ccb_h.status & CAM_SENT_SENSE) == 0 &&
1280 (io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref)) != NULL) {
1281 PRIV_INFO(io) = PRIV_INFO(
1282 (union ctl_io *)atio->ccb_h.io_ptr);
1283 ctl_queue_sense(atio->ccb_h.io_ptr);
1284 atio->ccb_h.io_ptr = io;
1285 }
1286
1287 /* Abort ATIO if CTIO sending status has failed. */
1288 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) !=
1289 CAM_REQ_CMP) {
1290 done_ccb->ccb_h.func_code = XPT_ABORT;
1291 done_ccb->cab.abort_ccb = (union ccb *)atio;
1292 xpt_action(done_ccb);
1293 }
1294
1295 xpt_release_ccb(done_ccb);
1296 ctlfe_requeue_ccb(periph, (union ccb *)atio,
1297 /* unlock */1);
1298 return;
1299 } else {
1300 struct ctlfe_cmd_info *cmd_info;
1301 struct ccb_scsiio *csio;
1302
1303 csio = &done_ccb->csio;
1304 cmd_info = PRIV_INFO(io);
1305
1306 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG;
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->scsiio.kern_data_resid -=
1318 csio->dxfer_len - csio->resid;
1319 io->io_hdr.port_status = 0;
1320 break;
1321 default:
1322 /*
1323 * XXX KDM we probably need to figure out a
1324 * standard set of errors that the SIM
1325 * drivers should return in the event of a
1326 * data transfer failure. A data phase
1327 * error will at least point the user to a
1328 * data transfer error of some sort.
1329 * Hopefully the SIM printed out some
1330 * additional information to give the user
1331 * a clue what happened.
1332 */
1333 io->io_hdr.port_status = 0xbad1;
1334 ctl_set_data_phase_error(&io->scsiio);
1335 /*
1336 * XXX KDM figure out residual.
1337 */
1338 break;
1339 }
1340 /*
1341 * If we had to break this S/G list into multiple
1342 * pieces, figure out where we are in the list, and
1343 * continue sending pieces if necessary.
1344 */
1345 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) &&
1346 io->io_hdr.port_status == 0 && csio->resid == 0) {
1347 ccb_flags flags;
1348 uint8_t *data_ptr;
1349 uint32_t dxfer_len;
1350
1351 flags = atio->ccb_h.flags &
1352 (CAM_DIS_DISCONNECT|
1353 CAM_TAG_ACTION_VALID);
1354
1355 ctlfedata(softc, io, &flags, &data_ptr,
1356 &dxfer_len, &csio->sglist_cnt);
1357
1358 if (((flags & CAM_SEND_STATUS) == 0)
1359 && (dxfer_len == 0)) {
1360 printf("%s: tag %04x no status or "
1361 "len cdb = %02x\n", __func__,
1362 atio->tag_id,
1363 atio_cdb_ptr(atio)[0]);
1364 printf("%s: tag %04x io status %#x\n",
1365 __func__, atio->tag_id,
1366 io->io_hdr.status);
1367 }
1368
1369 cam_fill_ctio(csio,
1370 /*retries*/ 2,
1371 ctlfedone,
1372 flags,
1373 (flags & CAM_TAG_ACTION_VALID) ?
1374 MSG_SIMPLE_Q_TAG : 0,
1375 atio->tag_id,
1376 atio->init_id,
1377 0,
1378 /*data_ptr*/ data_ptr,
1379 /*dxfer_len*/ dxfer_len,
1380 CTLFE_TIMEOUT * 1000);
1381
1382 csio->ccb_h.flags |= CAM_UNLOCKED;
1383 csio->resid = 0;
1384 csio->ccb_h.ccb_atio = atio;
1385 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1386 softc->ctios_sent++;
1387 mtx_unlock(mtx);
1388 xpt_action((union ccb *)csio);
1389 } else {
1390 /*
1391 * Release the CTIO. The ATIO will be sent back
1392 * down to the SIM once we send status.
1393 */
1394 xpt_release_ccb(done_ccb);
1395 mtx_unlock(mtx);
1396
1397 ctl_datamove_done(io, false);
1398 }
1399 return;
1400 }
1401 break;
1402 }
1403 case XPT_IMMEDIATE_NOTIFY: {
1404 union ctl_io *io;
1405 struct ccb_immediate_notify *inot;
1406 int send_ctl_io;
1407
1408 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1409 inot = &done_ccb->cin1;
1410 io = done_ccb->ccb_h.io_ptr;
1411 ctl_zero_io(io);
1412
1413 send_ctl_io = 1;
1414
1415 io->io_hdr.io_type = CTL_IO_TASK;
1416 PRIV_CCB(io) = done_ccb;
1417 inot->ccb_h.io_ptr = io;
1418 io->io_hdr.nexus.initid = inot->initiator_id;
1419 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1420 if (bus_softc->hba_misc & PIM_EXTLUNS) {
1421 io->io_hdr.nexus.targ_lun = ctl_decode_lun(
1422 CAM_EXTLUN_BYTE_SWIZZLE(inot->ccb_h.target_lun));
1423 } else {
1424 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun;
1425 }
1426 /* XXX KDM should this be the tag_id? */
1427 io->taskio.tag_num = inot->seq_id;
1428
1429 status = inot->ccb_h.status & CAM_STATUS_MASK;
1430 switch (status) {
1431 case CAM_SCSI_BUS_RESET:
1432 io->taskio.task_action = CTL_TASK_BUS_RESET;
1433 break;
1434 case CAM_BDR_SENT:
1435 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1436 break;
1437 case CAM_MESSAGE_RECV:
1438 switch (inot->arg) {
1439 case MSG_ABORT_TASK_SET:
1440 io->taskio.task_action =
1441 CTL_TASK_ABORT_TASK_SET;
1442 break;
1443 case MSG_TARGET_RESET:
1444 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1445 break;
1446 case MSG_ABORT_TASK:
1447 io->taskio.task_action = CTL_TASK_ABORT_TASK;
1448 break;
1449 case MSG_LOGICAL_UNIT_RESET:
1450 io->taskio.task_action = CTL_TASK_LUN_RESET;
1451 break;
1452 case MSG_CLEAR_TASK_SET:
1453 io->taskio.task_action =
1454 CTL_TASK_CLEAR_TASK_SET;
1455 break;
1456 case MSG_CLEAR_ACA:
1457 io->taskio.task_action = CTL_TASK_CLEAR_ACA;
1458 break;
1459 case MSG_QUERY_TASK:
1460 io->taskio.task_action = CTL_TASK_QUERY_TASK;
1461 break;
1462 case MSG_QUERY_TASK_SET:
1463 io->taskio.task_action =
1464 CTL_TASK_QUERY_TASK_SET;
1465 break;
1466 case MSG_QUERY_ASYNC_EVENT:
1467 io->taskio.task_action =
1468 CTL_TASK_QUERY_ASYNC_EVENT;
1469 break;
1470 case MSG_NOOP:
1471 send_ctl_io = 0;
1472 break;
1473 default:
1474 xpt_print(periph->path,
1475 "%s: unsupported INOT message 0x%x\n",
1476 __func__, inot->arg);
1477 send_ctl_io = 0;
1478 break;
1479 }
1480 break;
1481 default:
1482 xpt_print(periph->path,
1483 "%s: unsupported INOT status 0x%x\n",
1484 __func__, status);
1485 /* FALLTHROUGH */
1486 case CAM_REQ_ABORTED:
1487 case CAM_REQ_INVALID:
1488 case CAM_DEV_NOT_THERE:
1489 case CAM_PROVIDE_FAIL:
1490 ctlfe_free_ccb(periph, done_ccb);
1491 goto out;
1492 }
1493 mtx_unlock(mtx);
1494 if (send_ctl_io != 0) {
1495 ctl_queue(io);
1496 } else {
1497 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1498 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1499 xpt_action(done_ccb);
1500 }
1501 return;
1502 }
1503 case XPT_NOTIFY_ACKNOWLEDGE:
1504 /* Queue this back down to the SIM as an immediate notify. */
1505 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1506 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
1507 ctlfe_requeue_ccb(periph, done_ccb, /* unlock */1);
1508 return;
1509 case XPT_SET_SIM_KNOB:
1510 case XPT_GET_SIM_KNOB:
1511 case XPT_GET_SIM_KNOB_OLD:
1512 break;
1513 default:
1514 panic("%s: unexpected CCB type %#x", __func__,
1515 done_ccb->ccb_h.func_code);
1516 break;
1517 }
1518
1519 out:
1520 mtx_unlock(mtx);
1521 }
1522
1523 static void
ctlfe_onoffline(void * arg,int online)1524 ctlfe_onoffline(void *arg, int online)
1525 {
1526 struct ctlfe_softc *bus_softc = arg;
1527 union ccb *ccb;
1528 cam_status status;
1529 struct cam_path *path;
1530 int set_wwnn = 0;
1531
1532 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id,
1533 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1534 if (status != CAM_REQ_CMP) {
1535 printf("%s: unable to create path!\n", __func__);
1536 return;
1537 }
1538 ccb = xpt_alloc_ccb();
1539 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
1540 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB;
1541 xpt_action(ccb);
1542
1543 /* Check whether we should change WWNs. */
1544 if (online != 0) {
1545 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){
1546 printf("%s: %s current WWNN %#jx\n", __func__,
1547 bus_softc->port_name,
1548 ccb->knob.xport_specific.fc.wwnn);
1549 printf("%s: %s current WWPN %#jx\n", __func__,
1550 bus_softc->port_name,
1551 ccb->knob.xport_specific.fc.wwpn);
1552
1553 /*
1554 * If the user has specified a WWNN/WWPN, send them
1555 * down to the SIM. Otherwise, record what the SIM
1556 * has reported.
1557 */
1558 if (bus_softc->port.wwnn != 0 && bus_softc->port.wwnn
1559 != ccb->knob.xport_specific.fc.wwnn) {
1560 ccb->knob.xport_specific.fc.wwnn =
1561 bus_softc->port.wwnn;
1562 set_wwnn = 1;
1563 } else {
1564 ctl_port_set_wwns(&bus_softc->port,
1565 true, ccb->knob.xport_specific.fc.wwnn,
1566 false, 0);
1567 }
1568 if (bus_softc->port.wwpn != 0 && bus_softc->port.wwpn
1569 != ccb->knob.xport_specific.fc.wwpn) {
1570 ccb->knob.xport_specific.fc.wwpn =
1571 bus_softc->port.wwpn;
1572 set_wwnn = 1;
1573 } else {
1574 ctl_port_set_wwns(&bus_softc->port,
1575 false, 0,
1576 true, ccb->knob.xport_specific.fc.wwpn);
1577 }
1578 } else {
1579 printf("%s: %s has no valid WWNN/WWPN\n", __func__,
1580 bus_softc->port_name);
1581 if (bus_softc->port.wwnn != 0) {
1582 ccb->knob.xport_specific.fc.wwnn =
1583 bus_softc->port.wwnn;
1584 set_wwnn = 1;
1585 }
1586 if (bus_softc->port.wwpn != 0) {
1587 ccb->knob.xport_specific.fc.wwpn =
1588 bus_softc->port.wwpn;
1589 set_wwnn = 1;
1590 }
1591 }
1592 }
1593 if (set_wwnn) {
1594 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1595 ccb->knob.xport_specific.valid = KNOB_VALID_ADDRESS;
1596 xpt_action(ccb);
1597 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1598 printf("%s: %s (path id %d) failed set WWNs: %#x\n",
1599 __func__, bus_softc->port_name, bus_softc->path_id,
1600 ccb->ccb_h.status);
1601 } else {
1602 printf("%s: %s new WWNN %#jx\n", __func__,
1603 bus_softc->port_name,
1604 ccb->knob.xport_specific.fc.wwnn);
1605 printf("%s: %s new WWPN %#jx\n", __func__,
1606 bus_softc->port_name,
1607 ccb->knob.xport_specific.fc.wwpn);
1608 }
1609 }
1610
1611 /* Check whether we should change role. */
1612 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ROLE) == 0 ||
1613 ((online != 0) ^
1614 ((ccb->knob.xport_specific.fc.role & KNOB_ROLE_TARGET) != 0)) != 0) {
1615 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1616 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
1617 if (online)
1618 ccb->knob.xport_specific.fc.role |= KNOB_ROLE_TARGET;
1619 else
1620 ccb->knob.xport_specific.fc.role &= ~KNOB_ROLE_TARGET;
1621 xpt_action(ccb);
1622 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1623 printf("%s: %s (path id %d) failed %s target role: %#x\n",
1624 __func__, bus_softc->port_name, bus_softc->path_id,
1625 online ? "enable" : "disable", ccb->ccb_h.status);
1626 } else {
1627 printf("%s: %s (path id %d) target role %s succeeded\n",
1628 __func__, bus_softc->port_name, bus_softc->path_id,
1629 online ? "enable" : "disable");
1630 }
1631 }
1632
1633 xpt_free_path(path);
1634 xpt_free_ccb(ccb);
1635 }
1636
1637 static void
ctlfe_online(void * arg)1638 ctlfe_online(void *arg)
1639 {
1640 struct ctlfe_softc *bus_softc;
1641 struct cam_path *path;
1642 cam_status status;
1643 struct ctlfe_lun_softc *lun_softc;
1644 struct cam_periph *periph;
1645
1646 bus_softc = (struct ctlfe_softc *)arg;
1647
1648 /*
1649 * Create the wildcard LUN before bringing the port online.
1650 */
1651 status = xpt_create_path(&path, /*periph*/ NULL,
1652 bus_softc->path_id, CAM_TARGET_WILDCARD,
1653 CAM_LUN_WILDCARD);
1654 if (status != CAM_REQ_CMP) {
1655 printf("%s: unable to create path for wildcard periph\n",
1656 __func__);
1657 return;
1658 }
1659
1660 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, M_WAITOK | M_ZERO);
1661
1662 xpt_path_lock(path);
1663 periph = cam_periph_find(path, "ctl");
1664 if (periph != NULL) {
1665 /* We've already got a periph, no need to alloc a new one. */
1666 xpt_path_unlock(path);
1667 xpt_free_path(path);
1668 free(lun_softc, M_CTLFE);
1669 return;
1670 }
1671 lun_softc->parent_softc = bus_softc;
1672 lun_softc->flags |= CTLFE_LUN_WILDCARD;
1673
1674 status = cam_periph_alloc(ctlferegister,
1675 ctlfeoninvalidate,
1676 ctlfecleanup,
1677 ctlfestart,
1678 "ctl",
1679 CAM_PERIPH_BIO,
1680 path,
1681 ctlfeasync,
1682 0,
1683 lun_softc);
1684
1685 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1686 const struct cam_status_entry *entry;
1687
1688 entry = cam_fetch_status_entry(status);
1689 printf("%s: CAM error %s (%#x) returned from "
1690 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1691 entry->status_text : "Unknown", status);
1692 free(lun_softc, M_CTLFE);
1693 }
1694
1695 xpt_path_unlock(path);
1696 ctlfe_onoffline(arg, /*online*/ 1);
1697 xpt_free_path(path);
1698 }
1699
1700 static void
ctlfe_offline(void * arg)1701 ctlfe_offline(void *arg)
1702 {
1703 struct ctlfe_softc *bus_softc;
1704 struct cam_path *path;
1705 cam_status status;
1706 struct cam_periph *periph;
1707
1708 bus_softc = (struct ctlfe_softc *)arg;
1709
1710 ctlfe_onoffline(arg, /*online*/ 0);
1711
1712 /*
1713 * Disable the wildcard LUN for this port now that we have taken
1714 * the port offline.
1715 */
1716 status = xpt_create_path(&path, /*periph*/ NULL,
1717 bus_softc->path_id, CAM_TARGET_WILDCARD,
1718 CAM_LUN_WILDCARD);
1719 if (status != CAM_REQ_CMP) {
1720 printf("%s: unable to create path for wildcard periph\n",
1721 __func__);
1722 return;
1723 }
1724 xpt_path_lock(path);
1725 if ((periph = cam_periph_find(path, "ctl")) != NULL)
1726 cam_periph_invalidate(periph);
1727 xpt_path_unlock(path);
1728 xpt_free_path(path);
1729 }
1730
1731 /*
1732 * This will get called to enable a LUN on every bus that is attached to
1733 * CTL. So we only need to create a path/periph for this particular bus.
1734 */
1735 static int
ctlfe_lun_enable(void * arg,int lun_id)1736 ctlfe_lun_enable(void *arg, int lun_id)
1737 {
1738 struct ctlfe_softc *bus_softc;
1739 struct ctlfe_lun_softc *softc;
1740 struct cam_path *path;
1741 struct cam_periph *periph;
1742 cam_status status;
1743
1744 bus_softc = (struct ctlfe_softc *)arg;
1745 if (bus_softc->hba_misc & PIM_EXTLUNS)
1746 lun_id = CAM_EXTLUN_BYTE_SWIZZLE(ctl_encode_lun(lun_id));
1747
1748 status = xpt_create_path(&path, /*periph*/ NULL,
1749 bus_softc->path_id, bus_softc->target_id, lun_id);
1750 /* XXX KDM need some way to return status to CTL here? */
1751 if (status != CAM_REQ_CMP) {
1752 printf("%s: could not create path, status %#x\n", __func__,
1753 status);
1754 return (1);
1755 }
1756
1757 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO);
1758 xpt_path_lock(path);
1759 periph = cam_periph_find(path, "ctl");
1760 if (periph != NULL) {
1761 /* We've already got a periph, no need to alloc a new one. */
1762 xpt_path_unlock(path);
1763 xpt_free_path(path);
1764 free(softc, M_CTLFE);
1765 return (0);
1766 }
1767 softc->parent_softc = bus_softc;
1768
1769 status = cam_periph_alloc(ctlferegister,
1770 ctlfeoninvalidate,
1771 ctlfecleanup,
1772 ctlfestart,
1773 "ctl",
1774 CAM_PERIPH_BIO,
1775 path,
1776 ctlfeasync,
1777 0,
1778 softc);
1779
1780 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1781 const struct cam_status_entry *entry;
1782
1783 entry = cam_fetch_status_entry(status);
1784 printf("%s: CAM error %s (%#x) returned from "
1785 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1786 entry->status_text : "Unknown", status);
1787 free(softc, M_CTLFE);
1788 }
1789
1790 xpt_path_unlock(path);
1791 xpt_free_path(path);
1792 return (0);
1793 }
1794
1795 /*
1796 * This will get called when the user removes a LUN to disable that LUN
1797 * on every bus that is attached to CTL.
1798 */
1799 static int
ctlfe_lun_disable(void * arg,int lun_id)1800 ctlfe_lun_disable(void *arg, int lun_id)
1801 {
1802 struct ctlfe_softc *softc;
1803 struct ctlfe_lun_softc *lun_softc;
1804
1805 softc = (struct ctlfe_softc *)arg;
1806 if (softc->hba_misc & PIM_EXTLUNS)
1807 lun_id = CAM_EXTLUN_BYTE_SWIZZLE(ctl_encode_lun(lun_id));
1808
1809 mtx_lock(&softc->lun_softc_mtx);
1810 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) {
1811 struct cam_path *path;
1812
1813 path = lun_softc->periph->path;
1814
1815 if ((xpt_path_target_id(path) == softc->target_id)
1816 && (xpt_path_lun_id(path) == lun_id)) {
1817 break;
1818 }
1819 }
1820 if (lun_softc == NULL) {
1821 mtx_unlock(&softc->lun_softc_mtx);
1822 printf("%s: can't find lun %d\n", __func__, lun_id);
1823 return (1);
1824 }
1825 cam_periph_acquire(lun_softc->periph);
1826 mtx_unlock(&softc->lun_softc_mtx);
1827
1828 cam_periph_lock(lun_softc->periph);
1829 cam_periph_invalidate(lun_softc->periph);
1830 cam_periph_unlock(lun_softc->periph);
1831 cam_periph_release(lun_softc->periph);
1832 return (0);
1833 }
1834
1835 static void
ctlfe_dump_sim(struct cam_sim * sim)1836 ctlfe_dump_sim(struct cam_sim *sim)
1837 {
1838
1839 printf("%s%d: max dev openings: %d, max tagged dev openings: %d\n",
1840 sim->sim_name, sim->unit_number, sim->max_dev_openings,
1841 sim->max_tagged_dev_openings);
1842 }
1843
1844 /*
1845 * Assumes that the SIM lock is held.
1846 */
1847 static void
ctlfe_dump_queue(struct ctlfe_lun_softc * softc)1848 ctlfe_dump_queue(struct ctlfe_lun_softc *softc)
1849 {
1850 struct cam_periph *periph = softc->periph;
1851 struct ccb_hdr *hdr;
1852 struct ccb_getdevstats cgds;
1853 int num_items;
1854
1855 memset(&cgds, 0, sizeof(cgds));
1856 xpt_setup_ccb(&cgds.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1857 cgds.ccb_h.func_code = XPT_GDEV_STATS;
1858 xpt_action((union ccb *)&cgds);
1859 if ((cgds.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1860 xpt_print(periph->path, "devq: openings %d, active %d, "
1861 "allocated %d, queued %d, held %d\n",
1862 cgds.dev_openings, cgds.dev_active, cgds.allocated,
1863 cgds.queued, cgds.held);
1864 }
1865
1866 num_items = 0;
1867
1868 STAILQ_FOREACH(hdr, &softc->work_queue, periph_links.stqe) {
1869 union ctl_io *io = hdr->io_ptr;
1870
1871 num_items++;
1872
1873 /*
1874 * Only regular SCSI I/O is put on the work
1875 * queue, so we can print sense here. There may be no
1876 * sense if it's no the queue for a DMA, but this serves to
1877 * print out the CCB as well.
1878 *
1879 * XXX KDM switch this over to scsi_sense_print() when
1880 * CTL is merged in with CAM.
1881 */
1882 ctl_io_error_print(io, NULL);
1883
1884 /*
1885 * Print DMA status if we are DMA_QUEUED.
1886 */
1887 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
1888 xpt_print(periph->path,
1889 "Total %u, Current %u, Resid %u\n",
1890 io->scsiio.kern_total_len,
1891 io->scsiio.kern_data_len,
1892 io->scsiio.kern_data_resid);
1893 }
1894 }
1895
1896 xpt_print(periph->path, "%d requests waiting for CCBs\n", num_items);
1897 xpt_print(periph->path, "%d CTIOs outstanding\n", softc->ctios_sent);
1898 }
1899
1900 /*
1901 * Datamove/done routine called by CTL. Put ourselves on the queue to
1902 * receive a CCB from CAM so we can queue the continue I/O request down
1903 * to the adapter.
1904 */
1905 static void
ctlfe_datamove(union ctl_io * io)1906 ctlfe_datamove(union ctl_io *io)
1907 {
1908 union ccb *ccb;
1909 struct cam_periph *periph;
1910 struct ctlfe_lun_softc *softc;
1911
1912 KASSERT(io->io_hdr.io_type == CTL_IO_SCSI,
1913 ("%s: unexpected I/O type %x", __func__, io->io_hdr.io_type));
1914
1915 io->scsiio.ext_data_filled = 0;
1916 ccb = PRIV_CCB(io);
1917 periph = xpt_path_periph(ccb->ccb_h.path);
1918 cam_periph_lock(periph);
1919 softc = (struct ctlfe_lun_softc *)periph->softc;
1920 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
1921 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
1922 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
1923 STAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
1924 periph_links.stqe);
1925 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1926 cam_periph_unlock(periph);
1927 }
1928
1929 static void
ctlfe_done(union ctl_io * io)1930 ctlfe_done(union ctl_io *io)
1931 {
1932 union ccb *ccb;
1933 struct cam_periph *periph;
1934 struct ctlfe_lun_softc *softc;
1935
1936 ccb = PRIV_CCB(io);
1937 periph = xpt_path_periph(ccb->ccb_h.path);
1938 cam_periph_lock(periph);
1939 softc = (struct ctlfe_lun_softc *)periph->softc;
1940
1941 if (io->io_hdr.io_type == CTL_IO_TASK) {
1942 /*
1943 * Send the notify acknowledge down to the SIM, to let it
1944 * know we processed the task management command.
1945 */
1946 ccb->ccb_h.status = CAM_REQ_INPROG;
1947 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1948 switch (io->taskio.task_status) {
1949 case CTL_TASK_FUNCTION_COMPLETE:
1950 ccb->cna2.arg = CAM_RSP_TMF_COMPLETE;
1951 break;
1952 case CTL_TASK_FUNCTION_SUCCEEDED:
1953 ccb->cna2.arg = CAM_RSP_TMF_SUCCEEDED;
1954 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1955 break;
1956 case CTL_TASK_FUNCTION_REJECTED:
1957 ccb->cna2.arg = CAM_RSP_TMF_REJECTED;
1958 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1959 break;
1960 case CTL_TASK_LUN_DOES_NOT_EXIST:
1961 ccb->cna2.arg = CAM_RSP_TMF_INCORRECT_LUN;
1962 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1963 break;
1964 case CTL_TASK_FUNCTION_NOT_SUPPORTED:
1965 ccb->cna2.arg = CAM_RSP_TMF_FAILED;
1966 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1967 break;
1968 }
1969 ccb->cna2.arg |= scsi_3btoul(io->taskio.task_resp) << 8;
1970 xpt_action(ccb);
1971 } else if (io->io_hdr.flags & CTL_FLAG_STATUS_SENT) {
1972 ctlfe_requeue_ccb(periph, ccb, /* unlock */1);
1973 return;
1974 } else {
1975 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
1976 STAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
1977 periph_links.stqe);
1978 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1979 }
1980
1981 cam_periph_unlock(periph);
1982 }
1983
1984 static void
ctlfe_dump(void)1985 ctlfe_dump(void)
1986 {
1987 struct ctlfe_softc *bus_softc;
1988 struct ctlfe_lun_softc *lun_softc;
1989
1990 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) {
1991 ctlfe_dump_sim(bus_softc->sim);
1992 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links)
1993 ctlfe_dump_queue(lun_softc);
1994 }
1995 }
1996