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 <mav@FreeBSD.org>
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 <ken@FreeBSD.org>
39 */
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 <sys/taskqueue.h>
56 #include <machine/bus.h>
57
58 #include <cam/cam.h>
59 #include <cam/cam_ccb.h>
60 #include <cam/cam_periph.h>
61 #include <cam/cam_queue.h>
62 #include <cam/cam_xpt_periph.h>
63 #include <cam/cam_debug.h>
64 #include <cam/cam_sim.h>
65 #include <cam/cam_xpt.h>
66
67 #include <cam/scsi/scsi_all.h>
68 #include <cam/scsi/scsi_message.h>
69
70 #include <cam/ctl/ctl_io.h>
71 #include <cam/ctl/ctl.h>
72 #include <cam/ctl/ctl_frontend.h>
73 #include <cam/ctl/ctl_util.h>
74 #include <cam/ctl/ctl_error.h>
75
76 struct ctlfe_softc {
77 struct ctl_port port;
78 path_id_t path_id;
79 target_id_t target_id;
80 uint32_t hba_misc;
81 u_int maxio;
82 struct cam_sim *sim;
83 char port_name[DEV_IDLEN];
84 struct mtx lun_softc_mtx;
85 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list;
86 STAILQ_ENTRY(ctlfe_softc) links;
87 };
88
89 STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list;
90 struct mtx ctlfe_list_mtx;
91 static char ctlfe_mtx_desc[] = "ctlfelist";
92
93 typedef enum {
94 CTLFE_LUN_NONE = 0x00,
95 CTLFE_LUN_WILDCARD = 0x01
96 } ctlfe_lun_flags;
97
98 struct ctlfe_lun_softc {
99 struct ctlfe_softc *parent_softc;
100 struct cam_periph *periph;
101 ctlfe_lun_flags flags;
102 int ctios_sent; /* Number of active CTIOs */
103 int refcount; /* Number of active xpt_action() */
104 int atios_alloced; /* Number of ATIOs not freed */
105 int inots_alloced; /* Number of INOTs not freed */
106 struct task refdrain_task;
107 STAILQ_HEAD(, ccb_hdr) work_queue;
108 LIST_HEAD(, ccb_hdr) atio_list; /* List of ATIOs queued to SIM. */
109 LIST_HEAD(, ccb_hdr) inot_list; /* List of INOTs queued to SIM. */
110 STAILQ_ENTRY(ctlfe_lun_softc) links;
111 };
112
113 typedef enum {
114 CTLFE_CMD_NONE = 0x00,
115 CTLFE_CMD_PIECEWISE = 0x01
116 } ctlfe_cmd_flags;
117
118 struct ctlfe_cmd_info {
119 int cur_transfer_index;
120 size_t cur_transfer_off;
121 ctlfe_cmd_flags flags;
122 /*
123 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16
124 * bytes on amd64. So with 32 elements, this is 256 bytes on
125 * i386 and 512 bytes on amd64.
126 */
127 #define CTLFE_MAX_SEGS 32
128 bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS];
129 };
130
131 /*
132 * When we register the adapter/bus, request that this many ctl_ios be
133 * allocated. This should be the maximum supported by the adapter, but we
134 * currently don't have a way to get that back from the path inquiry.
135 * XXX KDM add that to the path inquiry.
136 */
137 #define CTLFE_REQ_CTL_IO 4096
138 /*
139 * Number of Accept Target I/O CCBs to allocate and queue down to the
140 * adapter per LUN.
141 * XXX KDM should this be controlled by CTL?
142 */
143 #define CTLFE_ATIO_PER_LUN 1024
144 /*
145 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to
146 * allocate and queue down to the adapter per LUN.
147 * XXX KDM should this be controlled by CTL?
148 */
149 #define CTLFE_IN_PER_LUN 1024
150
151 /*
152 * Timeout (in seconds) on CTIO CCB doing DMA or sending status
153 */
154 #define CTLFE_TIMEOUT 5
155
156 /*
157 * Turn this on to enable extra debugging prints.
158 */
159 #if 0
160 #define CTLFE_DEBUG
161 #endif
162
163 MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface");
164
165 #define io_ptr ppriv_ptr0
166
167 /* This is only used in the CTIO */
168 #define ccb_atio ppriv_ptr1
169
170 #define PRIV_CCB(io) ((io)->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptrs[0])
171 #define PRIV_INFO(io) ((io)->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptrs[1])
172
173 static int ctlfeinitialize(void);
174 static int ctlfeshutdown(void);
175 static periph_init_t ctlfeperiphinit;
176 static periph_deinit_t ctlfeperiphdeinit;
177 static void ctlfeasync(void *callback_arg, uint32_t code,
178 struct cam_path *path, void *arg);
179 static periph_ctor_t ctlferegister;
180 static periph_oninv_t ctlfeoninvalidate;
181 static periph_dtor_t ctlfecleanup;
182 static periph_start_t ctlfestart;
183 static void ctlfedone(struct cam_periph *periph,
184 union ccb *done_ccb);
185
186 static void ctlfe_onoffline(void *arg, int online);
187 static void ctlfe_online(void *arg);
188 static void ctlfe_offline(void *arg);
189 static int ctlfe_lun_enable(void *arg, int lun_id);
190 static int ctlfe_lun_disable(void *arg, int lun_id);
191 static void ctlfe_dump_sim(struct cam_sim *sim);
192 static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc);
193 static void ctlfe_datamove(union ctl_io *io);
194 static void ctlfe_done(union ctl_io *io);
195 static void ctlfe_dump(void);
196 static void ctlfe_free_ccb(struct cam_periph *periph,
197 union ccb *ccb);
198 static void ctlfe_requeue_ccb(struct cam_periph *periph,
199 union ccb *ccb, int unlock);
200
201 static struct periph_driver ctlfe_driver =
202 {
203 ctlfeperiphinit, "ctl",
204 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0,
205 CAM_PERIPH_DRV_EARLY,
206 ctlfeperiphdeinit
207 };
208
209 static struct ctl_frontend ctlfe_frontend =
210 {
211 .name = "camtgt",
212 .init = ctlfeinitialize,
213 .fe_dump = ctlfe_dump,
214 .shutdown = ctlfeshutdown,
215 };
216 CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend);
217
218 static int
ctlfeinitialize(void)219 ctlfeinitialize(void)
220 {
221
222 STAILQ_INIT(&ctlfe_softc_list);
223 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF);
224 periphdriver_register(&ctlfe_driver);
225 return (0);
226 }
227
228 static int
ctlfeshutdown(void)229 ctlfeshutdown(void)
230 {
231 int error;
232
233 error = periphdriver_unregister(&ctlfe_driver);
234 if (error != 0)
235 return (error);
236 mtx_destroy(&ctlfe_list_mtx);
237 return (0);
238 }
239
240 static void
ctlfeperiphinit(void)241 ctlfeperiphinit(void)
242 {
243 cam_status status;
244
245 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED |
246 AC_CONTRACT, ctlfeasync, NULL, NULL);
247 if (status != CAM_REQ_CMP) {
248 printf("ctl: Failed to attach async callback due to CAM "
249 "status 0x%x!\n", status);
250 }
251 }
252
253 static int
ctlfeperiphdeinit(void)254 ctlfeperiphdeinit(void)
255 {
256
257 /* XXX: It would be good to tear down active ports here. */
258 if (!TAILQ_EMPTY(&ctlfe_driver.units))
259 return (EBUSY);
260 xpt_register_async(0, ctlfeasync, NULL, NULL);
261 return (0);
262 }
263
264 static void
ctlfeasync(void * callback_arg,uint32_t code,struct cam_path * path,void * arg)265 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
266 {
267 struct ctlfe_softc *softc;
268
269 #ifdef CTLFEDEBUG
270 printf("%s: entered\n", __func__);
271 #endif
272
273 mtx_lock(&ctlfe_list_mtx);
274 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
275 if (softc->path_id == xpt_path_path_id(path))
276 break;
277 }
278 mtx_unlock(&ctlfe_list_mtx);
279
280 /*
281 * When a new path gets registered, and it is capable of target
282 * mode, go ahead and attach. Later on, we may need to be more
283 * selective, but for now this will be sufficient.
284 */
285 switch (code) {
286 case AC_PATH_REGISTERED: {
287 struct ctl_port *port;
288 struct ccb_pathinq *cpi;
289 int retval;
290
291 cpi = (struct ccb_pathinq *)arg;
292
293 /* Don't attach if it doesn't support target mode */
294 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) {
295 #ifdef CTLFEDEBUG
296 printf("%s: SIM %s%d doesn't support target mode\n",
297 __func__, cpi->dev_name, cpi->unit_number);
298 #endif
299 break;
300 }
301
302 if (softc != NULL) {
303 #ifdef CTLFEDEBUG
304 printf("%s: CTL port for CAM path %u already exists\n",
305 __func__, xpt_path_path_id(path));
306 #endif
307 break;
308 }
309
310 /*
311 * We're in an interrupt context here, so we have to
312 * use M_NOWAIT. Of course this means trouble if we
313 * can't allocate memory.
314 */
315 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO);
316 if (softc == NULL) {
317 printf("%s: unable to malloc %zd bytes for softc\n",
318 __func__, sizeof(*softc));
319 return;
320 }
321
322 softc->path_id = cpi->ccb_h.path_id;
323 softc->target_id = cpi->initiator_id;
324 softc->sim = xpt_path_sim(path);
325 softc->hba_misc = cpi->hba_misc;
326 if (cpi->maxio != 0)
327 softc->maxio = cpi->maxio;
328 else
329 softc->maxio = DFLTPHYS;
330 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF);
331 STAILQ_INIT(&softc->lun_softc_list);
332
333 port = &softc->port;
334 port->frontend = &ctlfe_frontend;
335
336 /*
337 * XXX KDM should we be more accurate here ?
338 */
339 if (cpi->transport == XPORT_FC)
340 port->port_type = CTL_PORT_FC;
341 else if (cpi->transport == XPORT_SAS)
342 port->port_type = CTL_PORT_SAS;
343 else
344 port->port_type = CTL_PORT_SCSI;
345
346 /* XXX KDM what should the real number be here? */
347 port->num_requested_ctl_io = CTLFE_REQ_CTL_IO;
348 snprintf(softc->port_name, sizeof(softc->port_name),
349 "%s%d", cpi->dev_name, cpi->unit_number);
350 /*
351 * XXX KDM it would be nice to allocate storage in the
352 * frontend structure itself.
353 */
354 port->port_name = softc->port_name;
355 port->physical_port = cpi->bus_id;
356 port->virtual_port = 0;
357 port->port_online = ctlfe_online;
358 port->port_offline = ctlfe_offline;
359 port->onoff_arg = softc;
360 port->lun_enable = ctlfe_lun_enable;
361 port->lun_disable = ctlfe_lun_disable;
362 port->targ_lun_arg = softc;
363 port->fe_datamove = ctlfe_datamove;
364 port->fe_done = ctlfe_done;
365 port->targ_port = -1;
366
367 retval = ctl_port_register(port);
368 if (retval != 0) {
369 printf("%s: ctl_port_register() failed with "
370 "error %d!\n", __func__, retval);
371 mtx_destroy(&softc->lun_softc_mtx);
372 free(softc, M_CTLFE);
373 break;
374 } else {
375 mtx_lock(&ctlfe_list_mtx);
376 STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links);
377 mtx_unlock(&ctlfe_list_mtx);
378 }
379
380 break;
381 }
382 case AC_PATH_DEREGISTERED: {
383 if (softc != NULL) {
384 /*
385 * XXX KDM are we certain at this point that there
386 * are no outstanding commands for this frontend?
387 */
388 mtx_lock(&ctlfe_list_mtx);
389 STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc,
390 links);
391 mtx_unlock(&ctlfe_list_mtx);
392 ctl_port_deregister(&softc->port);
393 mtx_destroy(&softc->lun_softc_mtx);
394 free(softc, M_CTLFE);
395 }
396 break;
397 }
398 case AC_CONTRACT: {
399 struct ac_contract *ac;
400
401 ac = (struct ac_contract *)arg;
402
403 switch (ac->contract_number) {
404 case AC_CONTRACT_DEV_CHG: {
405 struct ac_device_changed *dev_chg;
406 int retval;
407
408 dev_chg = (struct ac_device_changed *)ac->contract_data;
409
410 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n",
411 __func__, dev_chg->wwpn, dev_chg->port,
412 xpt_path_path_id(path), dev_chg->target,
413 (dev_chg->arrived == 0) ? "left" : "arrived");
414
415 if (softc == NULL) {
416 printf("%s: CTL port for CAM path %u not "
417 "found!\n", __func__,
418 xpt_path_path_id(path));
419 break;
420 }
421 if (dev_chg->arrived != 0) {
422 retval = ctl_add_initiator(&softc->port,
423 dev_chg->target, dev_chg->wwpn, NULL);
424 } else {
425 retval = ctl_remove_initiator(&softc->port,
426 dev_chg->target);
427 }
428
429 if (retval < 0) {
430 printf("%s: could not %s port %d iid %u "
431 "WWPN %#jx!\n", __func__,
432 (dev_chg->arrived != 0) ? "add" :
433 "remove", softc->port.targ_port,
434 dev_chg->target,
435 (uintmax_t)dev_chg->wwpn);
436 }
437 break;
438 }
439 default:
440 printf("%s: unsupported contract number %ju\n",
441 __func__, (uintmax_t)ac->contract_number);
442 break;
443 }
444 break;
445 }
446 default:
447 break;
448 }
449 }
450
451 static cam_status
ctlferegister(struct cam_periph * periph,void * arg)452 ctlferegister(struct cam_periph *periph, void *arg)
453 {
454 struct ctlfe_softc *bus_softc;
455 struct ctlfe_lun_softc *softc;
456 union ccb ccb;
457 cam_status status;
458 int i, acstatus;
459
460 softc = (struct ctlfe_lun_softc *)arg;
461 bus_softc = softc->parent_softc;
462
463 STAILQ_INIT(&softc->work_queue);
464 LIST_INIT(&softc->atio_list);
465 LIST_INIT(&softc->inot_list);
466 softc->periph = periph;
467 periph->softc = softc;
468
469 /* Increase device openings to maximum for the SIM. */
470 if (bus_softc->sim->max_tagged_dev_openings >
471 bus_softc->sim->max_dev_openings) {
472 cam_release_devq(periph->path,
473 /*relsim_flags*/RELSIM_ADJUST_OPENINGS,
474 /*openings*/bus_softc->sim->max_tagged_dev_openings,
475 /*timeout*/0,
476 /*getcount_only*/1);
477 }
478
479 memset(&ccb, 0, sizeof(ccb));
480 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
481 ccb.ccb_h.func_code = XPT_EN_LUN;
482 ccb.cel.grp6_len = 0;
483 ccb.cel.grp7_len = 0;
484 ccb.cel.enable = 1;
485 xpt_action(&ccb);
486 status = (ccb.ccb_h.status & CAM_STATUS_MASK);
487 if (status != CAM_REQ_CMP) {
488 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n",
489 __func__, ccb.ccb_h.status);
490 return (status);
491 }
492
493 status = CAM_REQ_CMP;
494
495 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) {
496 union ccb *new_ccb;
497 union ctl_io *new_io;
498 struct ctlfe_cmd_info *cmd_info;
499
500 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
501 M_ZERO|M_NOWAIT);
502 if (new_ccb == NULL) {
503 status = CAM_RESRC_UNAVAIL;
504 break;
505 }
506 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
507 if (new_io == NULL) {
508 free(new_ccb, M_CTLFE);
509 status = CAM_RESRC_UNAVAIL;
510 break;
511 }
512 cmd_info = malloc(sizeof(*cmd_info), M_CTLFE,
513 M_ZERO | M_NOWAIT);
514 if (cmd_info == NULL) {
515 ctl_free_io(new_io);
516 free(new_ccb, M_CTLFE);
517 status = CAM_RESRC_UNAVAIL;
518 break;
519 }
520 PRIV_INFO(new_io) = cmd_info;
521 softc->atios_alloced++;
522 new_ccb->ccb_h.io_ptr = new_io;
523 LIST_INSERT_HEAD(&softc->atio_list, &new_ccb->ccb_h, periph_links.le);
524
525 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, CAM_PRIORITY_NONE);
526 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
527 new_ccb->ccb_h.cbfcnp = ctlfedone;
528 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
529 xpt_action(new_ccb);
530 status = new_ccb->ccb_h.status;
531 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
532 free(cmd_info, M_CTLFE);
533 ctl_free_io(new_io);
534 free(new_ccb, M_CTLFE);
535 break;
536 }
537 }
538
539 acstatus = cam_periph_acquire(periph);
540 if (acstatus != 0) {
541 xpt_print(periph->path, "%s: could not acquire reference "
542 "count, status = %#x\n", __func__, acstatus);
543 return (CAM_REQ_CMP_ERR);
544 }
545
546 if (i == 0) {
547 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, "
548 "status 0x%x\n", __func__, status);
549 return (CAM_REQ_CMP_ERR);
550 }
551
552 for (i = 0; i < CTLFE_IN_PER_LUN; i++) {
553 union ccb *new_ccb;
554 union ctl_io *new_io;
555
556 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
557 M_ZERO|M_NOWAIT);
558 if (new_ccb == NULL) {
559 status = CAM_RESRC_UNAVAIL;
560 break;
561 }
562 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
563 if (new_io == NULL) {
564 free(new_ccb, M_CTLFE);
565 status = CAM_RESRC_UNAVAIL;
566 break;
567 }
568 softc->inots_alloced++;
569 new_ccb->ccb_h.io_ptr = new_io;
570 LIST_INSERT_HEAD(&softc->inot_list, &new_ccb->ccb_h, periph_links.le);
571
572 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, CAM_PRIORITY_NONE);
573 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
574 new_ccb->ccb_h.cbfcnp = ctlfedone;
575 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
576 xpt_action(new_ccb);
577 status = new_ccb->ccb_h.status;
578 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
579 /*
580 * Note that we don't free the CCB here. If the
581 * status is not CAM_REQ_INPROG, then we're
582 * probably talking to a SIM that says it is
583 * target-capable but doesn't support the
584 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the
585 * older API. In that case, it'll call xpt_done()
586 * on the CCB, and we need to free it in our done
587 * routine as a result.
588 */
589 break;
590 }
591 }
592 if ((i == 0)
593 || (status != CAM_REQ_INPROG)) {
594 xpt_print(periph->path, "%s: could not allocate immediate "
595 "notify CCBs, status 0x%x\n", __func__, status);
596 return (CAM_REQ_CMP_ERR);
597 }
598 mtx_lock(&bus_softc->lun_softc_mtx);
599 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links);
600 mtx_unlock(&bus_softc->lun_softc_mtx);
601 return (CAM_REQ_CMP);
602 }
603
604 static void
ctlfeoninvalidate(struct cam_periph * periph)605 ctlfeoninvalidate(struct cam_periph *periph)
606 {
607 struct ctlfe_lun_softc *softc = (struct ctlfe_lun_softc *)periph->softc;
608 struct ctlfe_softc *bus_softc;
609 union ccb ccb;
610 struct ccb_hdr *hdr;
611 cam_status status;
612
613 /* Abort all ATIOs and INOTs queued to SIM. */
614 memset(&ccb, 0, sizeof(ccb));
615 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
616 ccb.ccb_h.func_code = XPT_ABORT;
617 LIST_FOREACH(hdr, &softc->atio_list, periph_links.le) {
618 ccb.cab.abort_ccb = (union ccb *)hdr;
619 xpt_action(&ccb);
620 }
621 LIST_FOREACH(hdr, &softc->inot_list, periph_links.le) {
622 ccb.cab.abort_ccb = (union ccb *)hdr;
623 xpt_action(&ccb);
624 }
625
626 /* Disable the LUN in SIM. */
627 ccb.ccb_h.func_code = XPT_EN_LUN;
628 ccb.cel.grp6_len = 0;
629 ccb.cel.grp7_len = 0;
630 ccb.cel.enable = 0;
631 xpt_action(&ccb);
632 status = (ccb.ccb_h.status & CAM_STATUS_MASK);
633 if (status != CAM_REQ_CMP) {
634 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n",
635 __func__, ccb.ccb_h.status);
636 /*
637 * XXX KDM what do we do now?
638 */
639 }
640
641 bus_softc = softc->parent_softc;
642 mtx_lock(&bus_softc->lun_softc_mtx);
643 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links);
644 mtx_unlock(&bus_softc->lun_softc_mtx);
645 }
646
647 static void
ctlfecleanup(struct cam_periph * periph)648 ctlfecleanup(struct cam_periph *periph)
649 {
650 struct ctlfe_lun_softc *softc;
651
652 softc = (struct ctlfe_lun_softc *)periph->softc;
653
654 KASSERT(softc->ctios_sent == 0, ("%s: ctios_sent %d != 0",
655 __func__, softc->ctios_sent));
656 KASSERT(softc->refcount == 0, ("%s: refcount %d != 0",
657 __func__, softc->refcount));
658 KASSERT(softc->atios_alloced == 0, ("%s: atios_alloced %d != 0",
659 __func__, softc->atios_alloced));
660 KASSERT(softc->inots_alloced == 0, ("%s: inots_alloced %d != 0",
661 __func__, softc->inots_alloced));
662
663 free(softc, M_CTLFE);
664 }
665
666 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)667 ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io,
668 ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len,
669 uint16_t *sglist_cnt)
670 {
671 struct ctlfe_softc *bus_softc;
672 struct ctlfe_cmd_info *cmd_info;
673 struct ctl_sg_entry *ctl_sglist;
674 bus_dma_segment_t *cam_sglist;
675 size_t off;
676 int i, idx;
677
678 cmd_info = PRIV_INFO(io);
679 bus_softc = softc->parent_softc;
680
681 /*
682 * Set the direction, relative to the initiator.
683 */
684 *flags &= ~CAM_DIR_MASK;
685 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN)
686 *flags |= CAM_DIR_IN;
687 else
688 *flags |= CAM_DIR_OUT;
689
690 *flags &= ~CAM_DATA_MASK;
691 idx = cmd_info->cur_transfer_index;
692 off = cmd_info->cur_transfer_off;
693 cmd_info->flags &= ~CTLFE_CMD_PIECEWISE;
694 if (io->scsiio.kern_sg_entries == 0) { /* No S/G list. */
695
696 /* One time shift for SRR offset. */
697 off += io->scsiio.ext_data_filled;
698 io->scsiio.ext_data_filled = 0;
699
700 *data_ptr = io->scsiio.kern_data_ptr + off;
701 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) {
702 *dxfer_len = io->scsiio.kern_data_len - off;
703 } else {
704 *dxfer_len = bus_softc->maxio;
705 cmd_info->cur_transfer_off += bus_softc->maxio;
706 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
707 }
708 *sglist_cnt = 0;
709
710 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
711 *flags |= CAM_DATA_PADDR;
712 else
713 *flags |= CAM_DATA_VADDR;
714 } else { /* S/G list with physical or virtual pointers. */
715 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
716
717 /* One time shift for SRR offset. */
718 while (io->scsiio.ext_data_filled >= ctl_sglist[idx].len - off) {
719 io->scsiio.ext_data_filled -= ctl_sglist[idx].len - off;
720 idx++;
721 off = 0;
722 }
723 off += io->scsiio.ext_data_filled;
724 io->scsiio.ext_data_filled = 0;
725
726 cam_sglist = cmd_info->cam_sglist;
727 *dxfer_len = 0;
728 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) {
729 cam_sglist[i].ds_addr = (bus_addr_t)(uintptr_t)ctl_sglist[i + idx].addr + off;
730 if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) {
731 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off;
732 *dxfer_len += cam_sglist[i].ds_len;
733 } else {
734 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len;
735 cmd_info->cur_transfer_index = idx + i;
736 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off;
737 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
738 *dxfer_len += cam_sglist[i].ds_len;
739 if (ctl_sglist[i].len != 0)
740 i++;
741 break;
742 }
743 if (i == (CTLFE_MAX_SEGS - 1) &&
744 idx + i < (io->scsiio.kern_sg_entries - 1)) {
745 cmd_info->cur_transfer_index = idx + i + 1;
746 cmd_info->cur_transfer_off = 0;
747 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
748 i++;
749 break;
750 }
751 off = 0;
752 }
753 *sglist_cnt = i;
754 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
755 *flags |= CAM_DATA_SG_PADDR;
756 else
757 *flags |= CAM_DATA_SG;
758 *data_ptr = (uint8_t *)cam_sglist;
759 }
760 }
761
762 static void
ctlfestart(struct cam_periph * periph,union ccb * start_ccb)763 ctlfestart(struct cam_periph *periph, union ccb *start_ccb)
764 {
765 struct ctlfe_lun_softc *softc;
766 struct ctlfe_cmd_info *cmd_info;
767 struct ccb_hdr *ccb_h;
768 struct ccb_accept_tio *atio;
769 struct ccb_scsiio *csio;
770 uint8_t *data_ptr;
771 uint32_t dxfer_len;
772 ccb_flags flags;
773 union ctl_io *io;
774 uint8_t scsi_status;
775
776 softc = (struct ctlfe_lun_softc *)periph->softc;
777
778 next:
779 /* Take the ATIO off the work queue */
780 ccb_h = STAILQ_FIRST(&softc->work_queue);
781 if (ccb_h == NULL) {
782 xpt_release_ccb(start_ccb);
783 return;
784 }
785 STAILQ_REMOVE_HEAD(&softc->work_queue, periph_links.stqe);
786 atio = (struct ccb_accept_tio *)ccb_h;
787 io = (union ctl_io *)ccb_h->io_ptr;
788 csio = &start_ccb->csio;
789
790 flags = atio->ccb_h.flags &
791 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK);
792 cmd_info = PRIV_INFO(io);
793 cmd_info->cur_transfer_index = 0;
794 cmd_info->cur_transfer_off = 0;
795 cmd_info->flags = 0;
796
797 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
798 /*
799 * Datamove call, we need to setup the S/G list.
800 */
801 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len,
802 &csio->sglist_cnt);
803 } else {
804 /*
805 * We're done, send status back.
806 */
807 if ((io->io_hdr.flags & CTL_FLAG_ABORT) &&
808 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) {
809 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
810
811 /* Tell the SIM that we've aborted this ATIO */
812 #ifdef CTLFEDEBUG
813 printf("%s: tag %04x abort\n", __func__, atio->tag_id);
814 #endif
815 KASSERT(atio->ccb_h.func_code == XPT_ACCEPT_TARGET_IO,
816 ("func_code %#x is not ATIO", atio->ccb_h.func_code));
817 start_ccb->ccb_h.func_code = XPT_ABORT;
818 start_ccb->cab.abort_ccb = (union ccb *)atio;
819 xpt_action(start_ccb);
820
821 ctlfe_requeue_ccb(periph, (union ccb *)atio,
822 /* unlock */0);
823
824 /* XPT_ABORT is not queued, so we can take next I/O. */
825 goto next;
826 }
827 data_ptr = NULL;
828 dxfer_len = 0;
829 csio->sglist_cnt = 0;
830 }
831 scsi_status = 0;
832 if ((io->io_hdr.flags & CTL_FLAG_STATUS_QUEUED) &&
833 (cmd_info->flags & CTLFE_CMD_PIECEWISE) == 0 &&
834 ((io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) == 0 ||
835 io->io_hdr.status == CTL_SUCCESS)) {
836 flags |= CAM_SEND_STATUS;
837 scsi_status = io->scsiio.scsi_status;
838 csio->sense_len = io->scsiio.sense_len;
839 #ifdef CTLFEDEBUG
840 printf("%s: tag %04x status %x\n", __func__,
841 atio->tag_id, io->io_hdr.status);
842 #endif
843 if (csio->sense_len != 0) {
844 csio->sense_data = io->scsiio.sense_data;
845 flags |= CAM_SEND_SENSE;
846 }
847 }
848
849 #ifdef CTLFEDEBUG
850 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__,
851 (flags & CAM_SEND_STATUS) ? "done" : "datamove",
852 atio->tag_id, flags, data_ptr, dxfer_len);
853 #endif
854
855 /*
856 * Valid combinations:
857 * - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0,
858 * sglist_cnt = 0
859 * - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0,
860 * sglist_cnt = 0
861 * - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0,
862 * sglist_cnt != 0
863 */
864 #ifdef CTLFEDEBUG
865 if (((flags & CAM_SEND_STATUS)
866 && (((flags & CAM_DATA_SG) != 0)
867 || (dxfer_len != 0)
868 || (csio->sglist_cnt != 0)))
869 || (((flags & CAM_SEND_STATUS) == 0)
870 && (dxfer_len == 0))
871 || ((flags & CAM_DATA_SG)
872 && (csio->sglist_cnt == 0))
873 || (((flags & CAM_DATA_SG) == 0)
874 && (csio->sglist_cnt != 0))) {
875 printf("%s: tag %04x cdb %02x flags %#x dxfer_len "
876 "%d sg %u\n", __func__, atio->tag_id,
877 atio_cdb_ptr(atio)[0], flags, dxfer_len,
878 csio->sglist_cnt);
879 printf("%s: tag %04x io status %#x\n", __func__,
880 atio->tag_id, io->io_hdr.status);
881 }
882 #endif
883 cam_fill_ctio(csio,
884 /*retries*/ 2,
885 ctlfedone,
886 flags,
887 (flags & CAM_TAG_ACTION_VALID) ? MSG_SIMPLE_Q_TAG : 0,
888 atio->tag_id,
889 atio->init_id,
890 scsi_status,
891 /*data_ptr*/ data_ptr,
892 /*dxfer_len*/ dxfer_len,
893 /*timeout*/ CTLFE_TIMEOUT * 1000);
894 start_ccb->ccb_h.flags |= CAM_UNLOCKED;
895 start_ccb->ccb_h.ccb_atio = atio;
896 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED)
897 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
898 io->io_hdr.flags &= ~(CTL_FLAG_DMA_QUEUED | CTL_FLAG_STATUS_QUEUED);
899
900 softc->ctios_sent++;
901 softc->refcount++;
902 cam_periph_unlock(periph);
903 xpt_action(start_ccb);
904 cam_periph_lock(periph);
905 softc->refcount--;
906
907 /*
908 * If we still have work to do, ask for another CCB.
909 */
910 if (!STAILQ_EMPTY(&softc->work_queue))
911 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
912 }
913
914 static void
ctlfe_drain(void * context,int pending)915 ctlfe_drain(void *context, int pending)
916 {
917 struct cam_periph *periph = context;
918 struct ctlfe_lun_softc *softc = periph->softc;
919
920 cam_periph_lock(periph);
921 while (softc->refcount != 0) {
922 cam_periph_sleep(periph, &softc->refcount, PRIBIO,
923 "ctlfe_drain", 1);
924 }
925 cam_periph_unlock(periph);
926 cam_periph_release(periph);
927 }
928
929 static void
ctlfe_free_ccb(struct cam_periph * periph,union ccb * ccb)930 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb)
931 {
932 struct ctlfe_lun_softc *softc;
933 union ctl_io *io;
934 struct ctlfe_cmd_info *cmd_info;
935
936 softc = (struct ctlfe_lun_softc *)periph->softc;
937 io = ccb->ccb_h.io_ptr;
938
939 switch (ccb->ccb_h.func_code) {
940 case XPT_ACCEPT_TARGET_IO:
941 softc->atios_alloced--;
942 cmd_info = PRIV_INFO(io);
943 free(cmd_info, M_CTLFE);
944 break;
945 case XPT_IMMEDIATE_NOTIFY:
946 case XPT_NOTIFY_ACKNOWLEDGE:
947 softc->inots_alloced--;
948 break;
949 default:
950 break;
951 }
952
953 ctl_free_io(io);
954 free(ccb, M_CTLFE);
955
956 KASSERT(softc->atios_alloced >= 0, ("%s: atios_alloced %d < 0",
957 __func__, softc->atios_alloced));
958 KASSERT(softc->inots_alloced >= 0, ("%s: inots_alloced %d < 0",
959 __func__, softc->inots_alloced));
960
961 /*
962 * If we have received all of our CCBs, we can release our
963 * reference on the peripheral driver. It will probably go away
964 * now.
965 */
966 if (softc->atios_alloced == 0 && softc->inots_alloced == 0) {
967 if (softc->refcount == 0) {
968 cam_periph_release_locked(periph);
969 } else {
970 TASK_INIT(&softc->refdrain_task, 0, ctlfe_drain, periph);
971 taskqueue_enqueue(taskqueue_thread,
972 &softc->refdrain_task);
973 }
974 }
975 }
976
977 /*
978 * Send the ATIO/INOT back to the SIM, or free it if periph was invalidated.
979 */
980 static void
ctlfe_requeue_ccb(struct cam_periph * periph,union ccb * ccb,int unlock)981 ctlfe_requeue_ccb(struct cam_periph *periph, union ccb *ccb, int unlock)
982 {
983 struct ctlfe_lun_softc *softc;
984 struct mtx *mtx;
985
986 if (periph->flags & CAM_PERIPH_INVALID) {
987 mtx = cam_periph_mtx(periph);
988 ctlfe_free_ccb(periph, ccb);
989 if (unlock)
990 mtx_unlock(mtx);
991 return;
992 }
993 softc = (struct ctlfe_lun_softc *)periph->softc;
994 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
995 LIST_INSERT_HEAD(&softc->atio_list, &ccb->ccb_h, periph_links.le);
996 else
997 LIST_INSERT_HEAD(&softc->inot_list, &ccb->ccb_h, periph_links.le);
998 if (unlock)
999 cam_periph_unlock(periph);
1000
1001 /*
1002 * For a wildcard attachment, commands can come in with a specific
1003 * target/lun. Reset the target and LUN fields back to the wildcard
1004 * values before we send them back down to the SIM.
1005 */
1006 xpt_setup_ccb_flags(&ccb->ccb_h, periph->path, CAM_PRIORITY_NONE,
1007 ccb->ccb_h.flags);
1008
1009 xpt_action(ccb);
1010 }
1011
1012 static int
ctlfe_adjust_cdb(struct ccb_accept_tio * atio,uint32_t offset)1013 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset)
1014 {
1015 uint64_t lba;
1016 uint32_t num_blocks, nbc;
1017 uint8_t *cmdbyt = atio_cdb_ptr(atio);
1018
1019 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */
1020
1021 switch (cmdbyt[0]) {
1022 case READ_6:
1023 case WRITE_6:
1024 {
1025 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt;
1026 lba = scsi_3btoul(cdb->addr);
1027 lba &= 0x1fffff;
1028 num_blocks = cdb->length;
1029 if (num_blocks == 0)
1030 num_blocks = 256;
1031 lba += nbc;
1032 num_blocks -= nbc;
1033 scsi_ulto3b(lba, cdb->addr);
1034 cdb->length = num_blocks;
1035 break;
1036 }
1037 case READ_10:
1038 case WRITE_10:
1039 {
1040 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt;
1041 lba = scsi_4btoul(cdb->addr);
1042 num_blocks = scsi_2btoul(cdb->length);
1043 lba += nbc;
1044 num_blocks -= nbc;
1045 scsi_ulto4b(lba, cdb->addr);
1046 scsi_ulto2b(num_blocks, cdb->length);
1047 break;
1048 }
1049 case READ_12:
1050 case WRITE_12:
1051 {
1052 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt;
1053 lba = scsi_4btoul(cdb->addr);
1054 num_blocks = scsi_4btoul(cdb->length);
1055 lba += nbc;
1056 num_blocks -= nbc;
1057 scsi_ulto4b(lba, cdb->addr);
1058 scsi_ulto4b(num_blocks, cdb->length);
1059 break;
1060 }
1061 case READ_16:
1062 case WRITE_16:
1063 {
1064 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt;
1065 lba = scsi_8btou64(cdb->addr);
1066 num_blocks = scsi_4btoul(cdb->length);
1067 lba += nbc;
1068 num_blocks -= nbc;
1069 scsi_u64to8b(lba, cdb->addr);
1070 scsi_ulto4b(num_blocks, cdb->length);
1071 break;
1072 }
1073 default:
1074 return -1;
1075 }
1076 return (0);
1077 }
1078
1079 static void
ctlfedone(struct cam_periph * periph,union ccb * done_ccb)1080 ctlfedone(struct cam_periph *periph, union ccb *done_ccb)
1081 {
1082 struct ctlfe_lun_softc *softc;
1083 struct ctlfe_softc *bus_softc;
1084 struct ctlfe_cmd_info *cmd_info;
1085 struct ccb_accept_tio *atio = NULL;
1086 union ctl_io *io = NULL;
1087 struct mtx *mtx;
1088 cam_status status;
1089
1090 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0,
1091 ("CCB in ctlfedone() without CAM_UNLOCKED flag"));
1092 #ifdef CTLFE_DEBUG
1093 printf("%s: entered, func_code = %#x\n", __func__,
1094 done_ccb->ccb_h.func_code);
1095 #endif
1096
1097 /*
1098 * At this point CTL has no known use case for device queue freezes.
1099 * In case some SIM think different -- drop its freeze right here.
1100 */
1101 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1102 cam_release_devq(periph->path,
1103 /*relsim_flags*/0,
1104 /*reduction*/0,
1105 /*timeout*/0,
1106 /*getcount_only*/0);
1107 done_ccb->ccb_h.status &= ~CAM_DEV_QFRZN;
1108 }
1109
1110 softc = (struct ctlfe_lun_softc *)periph->softc;
1111 bus_softc = softc->parent_softc;
1112 mtx = cam_periph_mtx(periph);
1113 mtx_lock(mtx);
1114
1115 switch (done_ccb->ccb_h.func_code) {
1116 case XPT_ACCEPT_TARGET_IO: {
1117 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1118 atio = &done_ccb->atio;
1119 status = atio->ccb_h.status & CAM_STATUS_MASK;
1120 if (status != CAM_CDB_RECVD) {
1121 ctlfe_free_ccb(periph, done_ccb);
1122 goto out;
1123 }
1124
1125 resubmit:
1126 /*
1127 * Allocate a ctl_io, pass it to CTL, and wait for the
1128 * datamove or done.
1129 */
1130 mtx_unlock(mtx);
1131 io = done_ccb->ccb_h.io_ptr;
1132 cmd_info = PRIV_INFO(io);
1133 ctl_zero_io(io);
1134
1135 /* Save pointers on both sides */
1136 PRIV_CCB(io) = done_ccb;
1137 PRIV_INFO(io) = cmd_info;
1138 done_ccb->ccb_h.io_ptr = io;
1139
1140 /*
1141 * Only SCSI I/O comes down this path, resets, etc. come
1142 * down the immediate notify path below.
1143 */
1144 io->io_hdr.io_type = CTL_IO_SCSI;
1145 io->io_hdr.nexus.initid = atio->init_id;
1146 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1147 if (bus_softc->hba_misc & PIM_EXTLUNS) {
1148 io->io_hdr.nexus.targ_lun = ctl_decode_lun(
1149 CAM_EXTLUN_BYTE_SWIZZLE(atio->ccb_h.target_lun));
1150 } else {
1151 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun;
1152 }
1153 io->scsiio.priority = atio->priority;
1154 io->scsiio.tag_num = atio->tag_id;
1155 switch (atio->tag_action) {
1156 case CAM_TAG_ACTION_NONE:
1157 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1158 break;
1159 case MSG_SIMPLE_TASK:
1160 io->scsiio.tag_type = CTL_TAG_SIMPLE;
1161 break;
1162 case MSG_HEAD_OF_QUEUE_TASK:
1163 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
1164 break;
1165 case MSG_ORDERED_TASK:
1166 io->scsiio.tag_type = CTL_TAG_ORDERED;
1167 break;
1168 case MSG_ACA_TASK:
1169 io->scsiio.tag_type = CTL_TAG_ACA;
1170 break;
1171 default:
1172 io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1173 printf("%s: unhandled tag type %#x!!\n", __func__,
1174 atio->tag_action);
1175 break;
1176 }
1177 if (atio->cdb_len > sizeof(io->scsiio.cdb)) {
1178 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
1179 __func__, atio->cdb_len, sizeof(io->scsiio.cdb));
1180 }
1181 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb));
1182 bcopy(atio_cdb_ptr(atio), io->scsiio.cdb, io->scsiio.cdb_len);
1183
1184 #ifdef CTLFEDEBUG
1185 printf("%s: %u:%u:%u: tag %jx CDB %02x\n", __func__,
1186 io->io_hdr.nexus.initid,
1187 io->io_hdr.nexus.targ_port,
1188 io->io_hdr.nexus.targ_lun,
1189 io->scsiio.tag_num, io->scsiio.cdb[0]);
1190 #endif
1191
1192 ctl_queue(io);
1193 return;
1194 }
1195 case XPT_CONT_TARGET_IO: {
1196 int srr = 0;
1197 uint32_t srr_off = 0;
1198
1199 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio;
1200 io = (union ctl_io *)atio->ccb_h.io_ptr;
1201
1202 softc->ctios_sent--;
1203 #ifdef CTLFEDEBUG
1204 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n",
1205 __func__, atio->tag_id, done_ccb->ccb_h.flags);
1206 #endif
1207 /*
1208 * Handle SRR case were the data pointer is pushed back hack
1209 */
1210 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV
1211 && done_ccb->csio.msg_ptr != NULL
1212 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED
1213 && done_ccb->csio.msg_ptr[1] == 5
1214 && done_ccb->csio.msg_ptr[2] == 0) {
1215 srr = 1;
1216 srr_off =
1217 (done_ccb->csio.msg_ptr[3] << 24)
1218 | (done_ccb->csio.msg_ptr[4] << 16)
1219 | (done_ccb->csio.msg_ptr[5] << 8)
1220 | (done_ccb->csio.msg_ptr[6]);
1221 }
1222
1223 /*
1224 * If we have an SRR and we're still sending data, we
1225 * should be able to adjust offsets and cycle again.
1226 * It is possible only if offset is from this datamove.
1227 */
1228 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) &&
1229 srr_off >= io->scsiio.kern_rel_offset &&
1230 srr_off < io->scsiio.kern_rel_offset +
1231 io->scsiio.kern_data_len) {
1232 io->scsiio.kern_data_resid =
1233 io->scsiio.kern_rel_offset +
1234 io->scsiio.kern_data_len - srr_off;
1235 io->scsiio.ext_data_filled = srr_off;
1236 io->scsiio.io_hdr.status = CTL_STATUS_NONE;
1237 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
1238 xpt_release_ccb(done_ccb);
1239 STAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h,
1240 periph_links.stqe);
1241 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1242 break;
1243 }
1244
1245 /*
1246 * If status was being sent, the back end data is now history.
1247 * Hack it up and resubmit a new command with the CDB adjusted.
1248 * If the SIM does the right thing, all of the resid math
1249 * should work.
1250 */
1251 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1252 xpt_release_ccb(done_ccb);
1253 if (ctlfe_adjust_cdb(atio, srr_off) == 0) {
1254 done_ccb = (union ccb *)atio;
1255 goto resubmit;
1256 }
1257 /*
1258 * Fall through to doom....
1259 */
1260 }
1261
1262 if ((done_ccb->ccb_h.flags & CAM_SEND_STATUS) &&
1263 (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1264 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT;
1265
1266 /*
1267 * If we were sending status back to the initiator, free up
1268 * resources. If we were doing a datamove, call the
1269 * datamove done routine.
1270 */
1271 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1272 /*
1273 * If we asked to send sense data but it wasn't sent,
1274 * queue the I/O back to CTL for later REQUEST SENSE.
1275 */
1276 if ((done_ccb->ccb_h.flags & CAM_SEND_SENSE) != 0 &&
1277 (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP &&
1278 (done_ccb->ccb_h.status & CAM_SENT_SENSE) == 0 &&
1279 (io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref)) != NULL) {
1280 PRIV_INFO(io) = PRIV_INFO(
1281 (union ctl_io *)atio->ccb_h.io_ptr);
1282 ctl_queue_sense(atio->ccb_h.io_ptr);
1283 atio->ccb_h.io_ptr = io;
1284 }
1285
1286 /* Abort ATIO if CTIO sending status has failed. */
1287 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) !=
1288 CAM_REQ_CMP) {
1289 done_ccb->ccb_h.func_code = XPT_ABORT;
1290 done_ccb->cab.abort_ccb = (union ccb *)atio;
1291 xpt_action(done_ccb);
1292 }
1293
1294 xpt_release_ccb(done_ccb);
1295 ctlfe_requeue_ccb(periph, (union ccb *)atio,
1296 /* unlock */1);
1297 return;
1298 } else {
1299 struct ctlfe_cmd_info *cmd_info;
1300 struct ccb_scsiio *csio;
1301
1302 csio = &done_ccb->csio;
1303 cmd_info = PRIV_INFO(io);
1304
1305 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG;
1306
1307 /*
1308 * Translate CAM status to CTL status. Success
1309 * does not change the overall, ctl_io status. In
1310 * that case we just set port_status to 0. If we
1311 * have a failure, though, set a data phase error
1312 * for the overall ctl_io.
1313 */
1314 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) {
1315 case CAM_REQ_CMP:
1316 io->scsiio.kern_data_resid -=
1317 csio->dxfer_len - csio->resid;
1318 io->io_hdr.port_status = 0;
1319 break;
1320 default:
1321 /*
1322 * XXX KDM we probably need to figure out a
1323 * standard set of errors that the SIM
1324 * drivers should return in the event of a
1325 * data transfer failure. A data phase
1326 * error will at least point the user to a
1327 * data transfer error of some sort.
1328 * Hopefully the SIM printed out some
1329 * additional information to give the user
1330 * a clue what happened.
1331 */
1332 io->io_hdr.port_status = 0xbad1;
1333 ctl_set_data_phase_error(&io->scsiio);
1334 /*
1335 * XXX KDM figure out residual.
1336 */
1337 break;
1338 }
1339 /*
1340 * If we had to break this S/G list into multiple
1341 * pieces, figure out where we are in the list, and
1342 * continue sending pieces if necessary.
1343 */
1344 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) &&
1345 io->io_hdr.port_status == 0 && csio->resid == 0) {
1346 ccb_flags flags;
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 if (((flags & CAM_SEND_STATUS) == 0)
1358 && (dxfer_len == 0)) {
1359 printf("%s: tag %04x no status or "
1360 "len cdb = %02x\n", __func__,
1361 atio->tag_id,
1362 atio_cdb_ptr(atio)[0]);
1363 printf("%s: tag %04x io status %#x\n",
1364 __func__, atio->tag_id,
1365 io->io_hdr.status);
1366 }
1367
1368 cam_fill_ctio(csio,
1369 /*retries*/ 2,
1370 ctlfedone,
1371 flags,
1372 (flags & CAM_TAG_ACTION_VALID) ?
1373 MSG_SIMPLE_Q_TAG : 0,
1374 atio->tag_id,
1375 atio->init_id,
1376 0,
1377 /*data_ptr*/ data_ptr,
1378 /*dxfer_len*/ dxfer_len,
1379 CTLFE_TIMEOUT * 1000);
1380
1381 csio->ccb_h.flags |= CAM_UNLOCKED;
1382 csio->resid = 0;
1383 csio->ccb_h.ccb_atio = atio;
1384 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1385 softc->ctios_sent++;
1386 mtx_unlock(mtx);
1387 xpt_action((union ccb *)csio);
1388 } else {
1389 /*
1390 * Release the CTIO. The ATIO will be sent back
1391 * down to the SIM once we send status.
1392 */
1393 xpt_release_ccb(done_ccb);
1394 mtx_unlock(mtx);
1395
1396 ctl_datamove_done(io, false);
1397 }
1398 return;
1399 }
1400 break;
1401 }
1402 case XPT_IMMEDIATE_NOTIFY: {
1403 union ctl_io *io;
1404 struct ccb_immediate_notify *inot;
1405 int send_ctl_io;
1406
1407 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1408 inot = &done_ccb->cin1;
1409 io = done_ccb->ccb_h.io_ptr;
1410 ctl_zero_io(io);
1411
1412 send_ctl_io = 1;
1413
1414 io->io_hdr.io_type = CTL_IO_TASK;
1415 PRIV_CCB(io) = done_ccb;
1416 inot->ccb_h.io_ptr = io;
1417 io->io_hdr.nexus.initid = inot->initiator_id;
1418 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1419 if (bus_softc->hba_misc & PIM_EXTLUNS) {
1420 io->io_hdr.nexus.targ_lun = ctl_decode_lun(
1421 CAM_EXTLUN_BYTE_SWIZZLE(inot->ccb_h.target_lun));
1422 } else {
1423 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun;
1424 }
1425 /* XXX KDM should this be the tag_id? */
1426 io->taskio.tag_num = inot->seq_id;
1427
1428 status = inot->ccb_h.status & CAM_STATUS_MASK;
1429 switch (status) {
1430 case CAM_SCSI_BUS_RESET:
1431 io->taskio.task_action = CTL_TASK_BUS_RESET;
1432 break;
1433 case CAM_BDR_SENT:
1434 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1435 break;
1436 case CAM_MESSAGE_RECV:
1437 switch (inot->arg) {
1438 case MSG_ABORT_TASK_SET:
1439 io->taskio.task_action =
1440 CTL_TASK_ABORT_TASK_SET;
1441 break;
1442 case MSG_TARGET_RESET:
1443 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1444 break;
1445 case MSG_ABORT_TASK:
1446 io->taskio.task_action = CTL_TASK_ABORT_TASK;
1447 break;
1448 case MSG_LOGICAL_UNIT_RESET:
1449 io->taskio.task_action = CTL_TASK_LUN_RESET;
1450 break;
1451 case MSG_CLEAR_TASK_SET:
1452 io->taskio.task_action =
1453 CTL_TASK_CLEAR_TASK_SET;
1454 break;
1455 case MSG_CLEAR_ACA:
1456 io->taskio.task_action = CTL_TASK_CLEAR_ACA;
1457 break;
1458 case MSG_QUERY_TASK:
1459 io->taskio.task_action = CTL_TASK_QUERY_TASK;
1460 break;
1461 case MSG_QUERY_TASK_SET:
1462 io->taskio.task_action =
1463 CTL_TASK_QUERY_TASK_SET;
1464 break;
1465 case MSG_QUERY_ASYNC_EVENT:
1466 io->taskio.task_action =
1467 CTL_TASK_QUERY_ASYNC_EVENT;
1468 break;
1469 case MSG_NOOP:
1470 send_ctl_io = 0;
1471 break;
1472 default:
1473 xpt_print(periph->path,
1474 "%s: unsupported INOT message 0x%x\n",
1475 __func__, inot->arg);
1476 send_ctl_io = 0;
1477 break;
1478 }
1479 break;
1480 default:
1481 xpt_print(periph->path,
1482 "%s: unsupported INOT status 0x%x\n",
1483 __func__, status);
1484 /* FALLTHROUGH */
1485 case CAM_REQ_ABORTED:
1486 case CAM_REQ_INVALID:
1487 case CAM_DEV_NOT_THERE:
1488 case CAM_PROVIDE_FAIL:
1489 ctlfe_free_ccb(periph, done_ccb);
1490 goto out;
1491 }
1492 mtx_unlock(mtx);
1493 if (send_ctl_io != 0) {
1494 ctl_queue(io);
1495 } else {
1496 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1497 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1498 xpt_action(done_ccb);
1499 }
1500 return;
1501 }
1502 case XPT_NOTIFY_ACKNOWLEDGE:
1503 /* Queue this back down to the SIM as an immediate notify. */
1504 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1505 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
1506 ctlfe_requeue_ccb(periph, done_ccb, /* unlock */1);
1507 return;
1508 case XPT_SET_SIM_KNOB:
1509 case XPT_GET_SIM_KNOB:
1510 case XPT_GET_SIM_KNOB_OLD:
1511 break;
1512 default:
1513 panic("%s: unexpected CCB type %#x", __func__,
1514 done_ccb->ccb_h.func_code);
1515 break;
1516 }
1517
1518 out:
1519 mtx_unlock(mtx);
1520 }
1521
1522 static void
ctlfe_onoffline(void * arg,int online)1523 ctlfe_onoffline(void *arg, int online)
1524 {
1525 struct ctlfe_softc *bus_softc = arg;
1526 union ccb *ccb;
1527 cam_status status;
1528 struct cam_path *path;
1529 int set_wwnn = 0;
1530
1531 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id,
1532 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1533 if (status != CAM_REQ_CMP) {
1534 printf("%s: unable to create path!\n", __func__);
1535 return;
1536 }
1537 ccb = xpt_alloc_ccb();
1538 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
1539 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB;
1540 xpt_action(ccb);
1541
1542 /* Check whether we should change WWNs. */
1543 if (online != 0) {
1544 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){
1545 printf("%s: %s current WWNN %#jx\n", __func__,
1546 bus_softc->port_name,
1547 ccb->knob.xport_specific.fc.wwnn);
1548 printf("%s: %s current WWPN %#jx\n", __func__,
1549 bus_softc->port_name,
1550 ccb->knob.xport_specific.fc.wwpn);
1551
1552 /*
1553 * If the user has specified a WWNN/WWPN, send them
1554 * down to the SIM. Otherwise, record what the SIM
1555 * has reported.
1556 */
1557 if (bus_softc->port.wwnn != 0 && bus_softc->port.wwnn
1558 != ccb->knob.xport_specific.fc.wwnn) {
1559 ccb->knob.xport_specific.fc.wwnn =
1560 bus_softc->port.wwnn;
1561 set_wwnn = 1;
1562 } else {
1563 ctl_port_set_wwns(&bus_softc->port,
1564 true, ccb->knob.xport_specific.fc.wwnn,
1565 false, 0);
1566 }
1567 if (bus_softc->port.wwpn != 0 && bus_softc->port.wwpn
1568 != ccb->knob.xport_specific.fc.wwpn) {
1569 ccb->knob.xport_specific.fc.wwpn =
1570 bus_softc->port.wwpn;
1571 set_wwnn = 1;
1572 } else {
1573 ctl_port_set_wwns(&bus_softc->port,
1574 false, 0,
1575 true, ccb->knob.xport_specific.fc.wwpn);
1576 }
1577 } else {
1578 printf("%s: %s has no valid WWNN/WWPN\n", __func__,
1579 bus_softc->port_name);
1580 if (bus_softc->port.wwnn != 0) {
1581 ccb->knob.xport_specific.fc.wwnn =
1582 bus_softc->port.wwnn;
1583 set_wwnn = 1;
1584 }
1585 if (bus_softc->port.wwpn != 0) {
1586 ccb->knob.xport_specific.fc.wwpn =
1587 bus_softc->port.wwpn;
1588 set_wwnn = 1;
1589 }
1590 }
1591 }
1592 if (set_wwnn) {
1593 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1594 ccb->knob.xport_specific.valid = KNOB_VALID_ADDRESS;
1595 xpt_action(ccb);
1596 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1597 printf("%s: %s (path id %d) failed set WWNs: %#x\n",
1598 __func__, bus_softc->port_name, bus_softc->path_id,
1599 ccb->ccb_h.status);
1600 } else {
1601 printf("%s: %s new WWNN %#jx\n", __func__,
1602 bus_softc->port_name,
1603 ccb->knob.xport_specific.fc.wwnn);
1604 printf("%s: %s new WWPN %#jx\n", __func__,
1605 bus_softc->port_name,
1606 ccb->knob.xport_specific.fc.wwpn);
1607 }
1608 }
1609
1610 /* Check whether we should change role. */
1611 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ROLE) == 0 ||
1612 ((online != 0) ^
1613 ((ccb->knob.xport_specific.fc.role & KNOB_ROLE_TARGET) != 0)) != 0) {
1614 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1615 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
1616 if (online)
1617 ccb->knob.xport_specific.fc.role |= KNOB_ROLE_TARGET;
1618 else
1619 ccb->knob.xport_specific.fc.role &= ~KNOB_ROLE_TARGET;
1620 xpt_action(ccb);
1621 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1622 printf("%s: %s (path id %d) failed %s target role: %#x\n",
1623 __func__, bus_softc->port_name, bus_softc->path_id,
1624 online ? "enable" : "disable", ccb->ccb_h.status);
1625 } else {
1626 printf("%s: %s (path id %d) target role %s succeeded\n",
1627 __func__, bus_softc->port_name, bus_softc->path_id,
1628 online ? "enable" : "disable");
1629 }
1630 }
1631
1632 xpt_free_path(path);
1633 xpt_free_ccb(ccb);
1634 }
1635
1636 static void
ctlfe_online(void * arg)1637 ctlfe_online(void *arg)
1638 {
1639 struct ctlfe_softc *bus_softc;
1640 struct cam_path *path;
1641 cam_status status;
1642 struct ctlfe_lun_softc *lun_softc;
1643 struct cam_periph *periph;
1644
1645 bus_softc = (struct ctlfe_softc *)arg;
1646
1647 /*
1648 * Create the wildcard LUN before bringing the port online.
1649 */
1650 status = xpt_create_path(&path, /*periph*/ NULL,
1651 bus_softc->path_id, CAM_TARGET_WILDCARD,
1652 CAM_LUN_WILDCARD);
1653 if (status != CAM_REQ_CMP) {
1654 printf("%s: unable to create path for wildcard periph\n",
1655 __func__);
1656 return;
1657 }
1658
1659 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, M_WAITOK | M_ZERO);
1660
1661 xpt_path_lock(path);
1662 periph = cam_periph_find(path, "ctl");
1663 if (periph != NULL) {
1664 /* We've already got a periph, no need to alloc a new one. */
1665 xpt_path_unlock(path);
1666 xpt_free_path(path);
1667 free(lun_softc, M_CTLFE);
1668 return;
1669 }
1670 lun_softc->parent_softc = bus_softc;
1671 lun_softc->flags |= CTLFE_LUN_WILDCARD;
1672
1673 status = cam_periph_alloc(ctlferegister,
1674 ctlfeoninvalidate,
1675 ctlfecleanup,
1676 ctlfestart,
1677 "ctl",
1678 CAM_PERIPH_BIO,
1679 path,
1680 ctlfeasync,
1681 0,
1682 lun_softc);
1683
1684 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1685 const struct cam_status_entry *entry;
1686
1687 entry = cam_fetch_status_entry(status);
1688 printf("%s: CAM error %s (%#x) returned from "
1689 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1690 entry->status_text : "Unknown", status);
1691 free(lun_softc, M_CTLFE);
1692 }
1693
1694 xpt_path_unlock(path);
1695 ctlfe_onoffline(arg, /*online*/ 1);
1696 xpt_free_path(path);
1697 }
1698
1699 static void
ctlfe_offline(void * arg)1700 ctlfe_offline(void *arg)
1701 {
1702 struct ctlfe_softc *bus_softc;
1703 struct cam_path *path;
1704 cam_status status;
1705 struct cam_periph *periph;
1706
1707 bus_softc = (struct ctlfe_softc *)arg;
1708
1709 ctlfe_onoffline(arg, /*online*/ 0);
1710
1711 /*
1712 * Disable the wildcard LUN for this port now that we have taken
1713 * the port offline.
1714 */
1715 status = xpt_create_path(&path, /*periph*/ NULL,
1716 bus_softc->path_id, CAM_TARGET_WILDCARD,
1717 CAM_LUN_WILDCARD);
1718 if (status != CAM_REQ_CMP) {
1719 printf("%s: unable to create path for wildcard periph\n",
1720 __func__);
1721 return;
1722 }
1723 xpt_path_lock(path);
1724 if ((periph = cam_periph_find(path, "ctl")) != NULL)
1725 cam_periph_invalidate(periph);
1726 xpt_path_unlock(path);
1727 xpt_free_path(path);
1728 }
1729
1730 /*
1731 * This will get called to enable a LUN on every bus that is attached to
1732 * CTL. So we only need to create a path/periph for this particular bus.
1733 */
1734 static int
ctlfe_lun_enable(void * arg,int lun_id)1735 ctlfe_lun_enable(void *arg, int lun_id)
1736 {
1737 struct ctlfe_softc *bus_softc;
1738 struct ctlfe_lun_softc *softc;
1739 struct cam_path *path;
1740 struct cam_periph *periph;
1741 cam_status status;
1742
1743 bus_softc = (struct ctlfe_softc *)arg;
1744 if (bus_softc->hba_misc & PIM_EXTLUNS)
1745 lun_id = CAM_EXTLUN_BYTE_SWIZZLE(ctl_encode_lun(lun_id));
1746
1747 status = xpt_create_path(&path, /*periph*/ NULL,
1748 bus_softc->path_id, bus_softc->target_id, lun_id);
1749 /* XXX KDM need some way to return status to CTL here? */
1750 if (status != CAM_REQ_CMP) {
1751 printf("%s: could not create path, status %#x\n", __func__,
1752 status);
1753 return (1);
1754 }
1755
1756 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO);
1757 xpt_path_lock(path);
1758 periph = cam_periph_find(path, "ctl");
1759 if (periph != NULL) {
1760 /* We've already got a periph, no need to alloc a new one. */
1761 xpt_path_unlock(path);
1762 xpt_free_path(path);
1763 free(softc, M_CTLFE);
1764 return (0);
1765 }
1766 softc->parent_softc = bus_softc;
1767
1768 status = cam_periph_alloc(ctlferegister,
1769 ctlfeoninvalidate,
1770 ctlfecleanup,
1771 ctlfestart,
1772 "ctl",
1773 CAM_PERIPH_BIO,
1774 path,
1775 ctlfeasync,
1776 0,
1777 softc);
1778
1779 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1780 const struct cam_status_entry *entry;
1781
1782 entry = cam_fetch_status_entry(status);
1783 printf("%s: CAM error %s (%#x) returned from "
1784 "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1785 entry->status_text : "Unknown", status);
1786 free(softc, M_CTLFE);
1787 }
1788
1789 xpt_path_unlock(path);
1790 xpt_free_path(path);
1791 return (0);
1792 }
1793
1794 /*
1795 * This will get called when the user removes a LUN to disable that LUN
1796 * on every bus that is attached to CTL.
1797 */
1798 static int
ctlfe_lun_disable(void * arg,int lun_id)1799 ctlfe_lun_disable(void *arg, int lun_id)
1800 {
1801 struct ctlfe_softc *softc;
1802 struct ctlfe_lun_softc *lun_softc;
1803
1804 softc = (struct ctlfe_softc *)arg;
1805 if (softc->hba_misc & PIM_EXTLUNS)
1806 lun_id = CAM_EXTLUN_BYTE_SWIZZLE(ctl_encode_lun(lun_id));
1807
1808 mtx_lock(&softc->lun_softc_mtx);
1809 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) {
1810 struct cam_path *path;
1811
1812 path = lun_softc->periph->path;
1813
1814 if ((xpt_path_target_id(path) == softc->target_id)
1815 && (xpt_path_lun_id(path) == lun_id)) {
1816 break;
1817 }
1818 }
1819 if (lun_softc == NULL) {
1820 mtx_unlock(&softc->lun_softc_mtx);
1821 printf("%s: can't find lun %d\n", __func__, lun_id);
1822 return (1);
1823 }
1824 cam_periph_acquire(lun_softc->periph);
1825 mtx_unlock(&softc->lun_softc_mtx);
1826
1827 cam_periph_lock(lun_softc->periph);
1828 cam_periph_invalidate(lun_softc->periph);
1829 cam_periph_unlock(lun_softc->periph);
1830 cam_periph_release(lun_softc->periph);
1831 return (0);
1832 }
1833
1834 static void
ctlfe_dump_sim(struct cam_sim * sim)1835 ctlfe_dump_sim(struct cam_sim *sim)
1836 {
1837
1838 printf("%s%d: max dev openings: %d, max tagged dev openings: %d\n",
1839 sim->sim_name, sim->unit_number, sim->max_dev_openings,
1840 sim->max_tagged_dev_openings);
1841 }
1842
1843 /*
1844 * Assumes that the SIM lock is held.
1845 */
1846 static void
ctlfe_dump_queue(struct ctlfe_lun_softc * softc)1847 ctlfe_dump_queue(struct ctlfe_lun_softc *softc)
1848 {
1849 struct cam_periph *periph = softc->periph;
1850 struct ccb_hdr *hdr;
1851 struct ccb_getdevstats cgds;
1852 int num_items;
1853
1854 memset(&cgds, 0, sizeof(cgds));
1855 xpt_setup_ccb(&cgds.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1856 cgds.ccb_h.func_code = XPT_GDEV_STATS;
1857 xpt_action((union ccb *)&cgds);
1858 if ((cgds.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1859 xpt_print(periph->path, "devq: openings %d, active %d, "
1860 "allocated %d, queued %d, held %d\n",
1861 cgds.dev_openings, cgds.dev_active, cgds.allocated,
1862 cgds.queued, cgds.held);
1863 }
1864
1865 num_items = 0;
1866
1867 STAILQ_FOREACH(hdr, &softc->work_queue, periph_links.stqe) {
1868 union ctl_io *io = hdr->io_ptr;
1869
1870 num_items++;
1871
1872 /*
1873 * Only regular SCSI I/O is put on the work
1874 * queue, so we can print sense here. There may be no
1875 * sense if it's no the queue for a DMA, but this serves to
1876 * print out the CCB as well.
1877 *
1878 * XXX KDM switch this over to scsi_sense_print() when
1879 * CTL is merged in with CAM.
1880 */
1881 ctl_io_error_print(io, NULL);
1882
1883 /*
1884 * Print DMA status if we are DMA_QUEUED.
1885 */
1886 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
1887 xpt_print(periph->path,
1888 "Total %u, Current %u, Resid %u\n",
1889 io->scsiio.kern_total_len,
1890 io->scsiio.kern_data_len,
1891 io->scsiio.kern_data_resid);
1892 }
1893 }
1894
1895 xpt_print(periph->path, "%d requests waiting for CCBs\n", num_items);
1896 xpt_print(periph->path, "%d CTIOs outstanding\n", softc->ctios_sent);
1897 }
1898
1899 /*
1900 * Datamove/done routine called by CTL. Put ourselves on the queue to
1901 * receive a CCB from CAM so we can queue the continue I/O request down
1902 * to the adapter.
1903 */
1904 static void
ctlfe_datamove(union ctl_io * io)1905 ctlfe_datamove(union ctl_io *io)
1906 {
1907 union ccb *ccb;
1908 struct cam_periph *periph;
1909 struct ctlfe_lun_softc *softc;
1910
1911 CTL_IO_ASSERT(io, SCSI);
1912
1913 io->scsiio.ext_data_filled = 0;
1914 ccb = PRIV_CCB(io);
1915 periph = xpt_path_periph(ccb->ccb_h.path);
1916 cam_periph_lock(periph);
1917 softc = (struct ctlfe_lun_softc *)periph->softc;
1918 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
1919 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
1920 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
1921 STAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
1922 periph_links.stqe);
1923 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1924 cam_periph_unlock(periph);
1925 }
1926
1927 static void
ctlfe_done(union ctl_io * io)1928 ctlfe_done(union ctl_io *io)
1929 {
1930 union ccb *ccb;
1931 struct cam_periph *periph;
1932 struct ctlfe_lun_softc *softc;
1933
1934 ccb = PRIV_CCB(io);
1935 periph = xpt_path_periph(ccb->ccb_h.path);
1936 cam_periph_lock(periph);
1937 softc = (struct ctlfe_lun_softc *)periph->softc;
1938
1939 if (io->io_hdr.io_type == CTL_IO_TASK) {
1940 /*
1941 * Send the notify acknowledge down to the SIM, to let it
1942 * know we processed the task management command.
1943 */
1944 ccb->ccb_h.status = CAM_REQ_INPROG;
1945 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1946 switch (io->taskio.task_status) {
1947 case CTL_TASK_FUNCTION_COMPLETE:
1948 ccb->cna2.arg = CAM_RSP_TMF_COMPLETE;
1949 break;
1950 case CTL_TASK_FUNCTION_SUCCEEDED:
1951 ccb->cna2.arg = CAM_RSP_TMF_SUCCEEDED;
1952 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1953 break;
1954 case CTL_TASK_FUNCTION_REJECTED:
1955 ccb->cna2.arg = CAM_RSP_TMF_REJECTED;
1956 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1957 break;
1958 case CTL_TASK_LUN_DOES_NOT_EXIST:
1959 ccb->cna2.arg = CAM_RSP_TMF_INCORRECT_LUN;
1960 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1961 break;
1962 case CTL_TASK_FUNCTION_NOT_SUPPORTED:
1963 ccb->cna2.arg = CAM_RSP_TMF_FAILED;
1964 ccb->ccb_h.flags |= CAM_SEND_STATUS;
1965 break;
1966 }
1967 ccb->cna2.arg |= scsi_3btoul(io->taskio.task_resp) << 8;
1968 xpt_action(ccb);
1969 } else if (io->io_hdr.flags & CTL_FLAG_STATUS_SENT) {
1970 ctlfe_requeue_ccb(periph, ccb, /* unlock */1);
1971 return;
1972 } else {
1973 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
1974 STAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
1975 periph_links.stqe);
1976 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1977 }
1978
1979 cam_periph_unlock(periph);
1980 }
1981
1982 static void
ctlfe_dump(void)1983 ctlfe_dump(void)
1984 {
1985 struct ctlfe_softc *bus_softc;
1986 struct ctlfe_lun_softc *lun_softc;
1987
1988 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) {
1989 ctlfe_dump_sim(bus_softc->sim);
1990 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links)
1991 ctlfe_dump_queue(lun_softc);
1992 }
1993 }
1994