2 * $FreeBSD: src/sys/cam/scsi/scsi_low.c,v 1.1.2.5 2003/08/09 06:18:30 non Exp $
3 * $DragonFly: src/sys/bus/cam/scsi/scsi_low.c,v 1.16 2006/09/05 00:55:32 dillon Exp $
4 * $NetBSD: scsi_low.c,v 1.24.10.8 2001/06/26 07:39:44 honda Exp $
7 #define SCSI_LOW_STATICS
9 #define SCSI_LOW_NEGOTIATE_BEFORE_SENSE
10 #define SCSI_LOW_START_UP_CHECK
12 /* #define SCSI_LOW_INFO_DETAIL */
13 /* #define SCSI_LOW_QCLEAR_AFTER_CA */
14 /* #define SCSI_LOW_FLAGS_QUIRKS_OK */
16 #define SCSI_LOW_FLAGS_QUIRKS_OK
19 * [NetBSD for NEC PC-98 series]
20 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
21 * NetBSD/pc98 porting staff. All rights reserved.
22 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
23 * Naofumi HONDA. All rights reserved.
25 * [Ported for FreeBSD CAM]
26 * Copyright (c) 2000, 2001
27 * MITSUNAGA Noriaki, NOKUBI Hirotaka and TAKAHASHI Yoshihiro.
28 * All rights reserved.
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions
33 * 1. Redistributions of source code must retain the above copyright
34 * notice, this list of conditions and the following disclaimer.
35 * 2. Redistributions in binary form must reproduce the above copyright
36 * notice, this list of conditions and the following disclaimer in the
37 * documentation and/or other materials provided with the distribution.
38 * 3. The name of the author may not be used to endorse or promote products
39 * derived from this software without specific prior written permission.
41 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
42 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
43 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
44 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
45 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
46 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
47 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
50 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
51 * POSSIBILITY OF SUCH DAMAGE.
54 /* <On the nexus establishment>
55 * When our host is reselected,
56 * nexus establish processes are little complicated.
57 * Normal steps are followings:
58 * 1) Our host selected by target => target nexus (slp->sl_Tnexus)
59 * 2) Identify msgin => lun nexus (slp->sl_Lnexus)
60 * 3) Qtag msg => ccb nexus (slp->sl_Qnexus)
64 #include <sys/param.h>
67 #include <sys/devicestat.h>
68 #include <sys/errno.h>
69 #include <sys/kernel.h>
70 #include <sys/malloc.h>
71 #include <sys/queue.h>
72 #include <sys/systm.h>
73 #include <sys/thread2.h>
75 #include <bus/cam/cam.h>
76 #include <bus/cam/cam_ccb.h>
77 #include <bus/cam/cam_sim.h>
78 #include <bus/cam/cam_debug.h>
79 #include <bus/cam/cam_periph.h>
81 #include <bus/cam/scsi/scsi_all.h>
82 #include <bus/cam/scsi/scsi_message.h>
83 #include <bus/cam/scsi/scsi_low.h>
85 /**************************************************************
87 **************************************************************/
88 #define SCSI_LOW_POLL_HZ 1000
90 /* functions return values */
91 #define SCSI_LOW_START_NO_QTAG 0
92 #define SCSI_LOW_START_QTAG 1
94 #define SCSI_LOW_DONE_COMPLETE 0
95 #define SCSI_LOW_DONE_RETRY 1
97 /* internal disk flags */
98 #define SCSI_LOW_DISK_DISC 0x00000001
99 #define SCSI_LOW_DISK_QTAG 0x00000002
100 #define SCSI_LOW_DISK_LINK 0x00000004
101 #define SCSI_LOW_DISK_PARITY 0x00000008
102 #define SCSI_LOW_DISK_SYNC 0x00010000
103 #define SCSI_LOW_DISK_WIDE_16 0x00020000
104 #define SCSI_LOW_DISK_WIDE_32 0x00040000
105 #define SCSI_LOW_DISK_WIDE (SCSI_LOW_DISK_WIDE_16 | SCSI_LOW_DISK_WIDE_32)
106 #define SCSI_LOW_DISK_LFLAGS 0x0000ffff
107 #define SCSI_LOW_DISK_TFLAGS 0xffff0000
109 /**************************************************************
111 **************************************************************/
112 /* static */ void scsi_low_info (struct scsi_low_softc *, struct targ_info *, u_char *);
113 static void scsi_low_engage (void *);
114 static struct slccb *scsi_low_establish_ccb (struct targ_info *, struct lun_info *, scsi_low_tag_t);
115 static int scsi_low_done (struct scsi_low_softc *, struct slccb *);
116 static int scsi_low_setup_done (struct scsi_low_softc *, struct slccb *);
117 static void scsi_low_bus_release (struct scsi_low_softc *, struct targ_info *);
118 static void scsi_low_twiddle_wait (void);
119 static struct lun_info *scsi_low_alloc_li (struct targ_info *, int, int);
120 static struct targ_info *scsi_low_alloc_ti (struct scsi_low_softc *, int);
121 static void scsi_low_calcf_lun (struct lun_info *);
122 static void scsi_low_calcf_target (struct targ_info *);
123 static void scsi_low_calcf_show (struct lun_info *);
124 static void scsi_low_reset_nexus (struct scsi_low_softc *, int);
125 static void scsi_low_reset_nexus_target (struct scsi_low_softc *, struct targ_info *, int);
126 static void scsi_low_reset_nexus_lun (struct scsi_low_softc *, struct lun_info *, int);
127 static int scsi_low_init (struct scsi_low_softc *, u_int);
128 static void scsi_low_start (struct scsi_low_softc *);
129 static void scsi_low_free_ti (struct scsi_low_softc *);
131 static int scsi_low_alloc_qtag (struct slccb *);
132 static int scsi_low_dealloc_qtag (struct slccb *);
133 static int scsi_low_enqueue (struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *, u_int, u_int);
134 static int scsi_low_message_enqueue (struct scsi_low_softc *, struct targ_info *, struct lun_info *, u_int);
135 static void scsi_low_unit_ready_cmd (struct slccb *);
136 static void scsi_low_timeout (void *);
137 static int scsi_low_timeout_check (struct scsi_low_softc *);
138 #ifdef SCSI_LOW_START_UP_CHECK
139 static int scsi_low_start_up (struct scsi_low_softc *);
140 #endif /* SCSI_LOW_START_UP_CHECK */
141 static int scsi_low_abort_ccb (struct scsi_low_softc *, struct slccb *);
142 static struct slccb *scsi_low_revoke_ccb (struct scsi_low_softc *, struct slccb *, int);
144 int scsi_low_version_major = 2;
145 int scsi_low_version_minor = 17;
147 static struct scsi_low_softc_tab sl_tab = LIST_HEAD_INITIALIZER(sl_tab);
149 /**************************************************************
150 * Debug, Run test and Statics
151 **************************************************************/
152 #ifdef SCSI_LOW_INFO_DETAIL
153 #define SCSI_LOW_INFO(slp, ti, s) scsi_low_info((slp), (ti), (s))
154 #else /* !SCSI_LOW_INFO_DETAIL */
155 #define SCSI_LOW_INFO(slp, ti, s) printf("%s: %s\n", (slp)->sl_xname, (s))
156 #endif /* !SCSI_LOW_INFO_DETAIL */
158 #ifdef SCSI_LOW_STATICS
159 struct scsi_low_statics {
162 int nexus_disconnected;
163 int nexus_reselected;
166 #endif /* SCSI_LOW_STATICS */
168 #ifdef SCSI_LOW_DEBUG
169 #define SCSI_LOW_DEBUG_DONE 0x00001
170 #define SCSI_LOW_DEBUG_DISC 0x00002
171 #define SCSI_LOW_DEBUG_SENSE 0x00004
172 #define SCSI_LOW_DEBUG_CALCF 0x00008
173 #define SCSI_LOW_DEBUG_ACTION 0x10000
174 int scsi_low_debug = 0;
176 #define SCSI_LOW_MAX_ATTEN_CHECK 32
177 #define SCSI_LOW_ATTEN_CHECK 0x0001
178 #define SCSI_LOW_CMDLNK_CHECK 0x0002
179 #define SCSI_LOW_ABORT_CHECK 0x0004
180 #define SCSI_LOW_NEXUS_CHECK 0x0008
181 int scsi_low_test = 0;
182 int scsi_low_test_id = 0;
184 static void scsi_low_test_abort (struct scsi_low_softc *, struct targ_info *, struct lun_info *);
185 static void scsi_low_test_cmdlnk (struct scsi_low_softc *, struct slccb *);
186 static void scsi_low_test_atten (struct scsi_low_softc *, struct targ_info *, u_int);
187 #define SCSI_LOW_DEBUG_TEST_GO(fl, id) \
188 ((scsi_low_test & (fl)) != 0 && (scsi_low_test_id & (1 << (id))) == 0)
189 #define SCSI_LOW_DEBUG_GO(fl, id) \
190 ((scsi_low_debug & (fl)) != 0 && (scsi_low_test_id & (1 << (id))) == 0)
191 #endif /* SCSI_LOW_DEBUG */
193 /**************************************************************
195 **************************************************************/
196 GENERIC_CCB_STATIC_ALLOC(scsi_low, slccb)
197 GENERIC_CCB(scsi_low, slccb, ccb_chain)
199 /**************************************************************
201 **************************************************************/
202 #define SCSI_LOW_INLINE static __inline
203 SCSI_LOW_INLINE void scsi_low_activate_qtag (struct slccb *);
204 SCSI_LOW_INLINE void scsi_low_deactivate_qtag (struct slccb *);
205 SCSI_LOW_INLINE void scsi_low_ccb_message_assert (struct slccb *, u_int);
206 SCSI_LOW_INLINE void scsi_low_ccb_message_exec (struct scsi_low_softc *, struct slccb *);
207 SCSI_LOW_INLINE void scsi_low_ccb_message_retry (struct slccb *);
208 SCSI_LOW_INLINE void scsi_low_ccb_message_clear (struct slccb *);
209 SCSI_LOW_INLINE void scsi_low_init_msgsys (struct scsi_low_softc *, struct targ_info *);
212 scsi_low_activate_qtag(struct slccb *cb)
214 struct lun_info *li = cb->li;
216 if (cb->ccb_tag != SCSI_LOW_UNKTAG)
220 cb->ccb_tag = cb->ccb_otag;
224 scsi_low_deactivate_qtag(struct slccb *cb)
226 struct lun_info *li = cb->li;
228 if (cb->ccb_tag == SCSI_LOW_UNKTAG)
232 cb->ccb_tag = SCSI_LOW_UNKTAG;
236 scsi_low_ccb_message_exec(struct scsi_low_softc *slp, struct slccb *cb)
238 scsi_low_assert_msg(slp, cb->ti, cb->ccb_msgoutflag, 0);
239 cb->ccb_msgoutflag = 0;
243 scsi_low_ccb_message_assert(struct slccb *cb, u_int msg)
245 cb->ccb_msgoutflag = cb->ccb_omsgoutflag = msg;
249 scsi_low_ccb_message_retry(struct slccb *cb)
251 cb->ccb_msgoutflag = cb->ccb_omsgoutflag;
255 scsi_low_ccb_message_clear(struct slccb *cb)
257 cb->ccb_msgoutflag = 0;
261 scsi_low_init_msgsys(struct scsi_low_softc *slp, struct targ_info *ti)
264 ti->ti_emsgflags = ti->ti_msgflags = ti->ti_omsgflags = 0;
265 SCSI_LOW_DEASSERT_ATN(slp);
266 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_NULL);
269 /*=============================================================
270 * START OF OS switch (All OS depend fucntions should be here)
271 =============================================================*/
272 /* common os depend utitlities */
273 #define SCSI_LOW_CMD_RESIDUAL_CHK 0x0001
274 #define SCSI_LOW_CMD_ORDERED_QTAG 0x0002
275 #define SCSI_LOW_CMD_ABORT_WARNING 0x0004
277 static u_int8_t scsi_low_cmd_flags[256] = {
278 /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
279 /*0*/ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 0, 0,
280 /*1*/ 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0,
281 /*2*/ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 5, 5,
282 /*3*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 5,
285 struct scsi_low_error_code {
290 static struct slccb *scsi_low_find_ccb (struct scsi_low_softc *, u_int, u_int, void *);
291 static int scsi_low_translate_error_code (struct slccb *, struct scsi_low_error_code *);
293 static struct slccb *
294 scsi_low_find_ccb(struct scsi_low_softc *slp, u_int target, u_int lun, void *osdep)
296 struct targ_info *ti;
300 ti = slp->sl_ti[target];
301 li = scsi_low_alloc_li(ti, lun, 0);
305 if ((cb = slp->sl_Qnexus) != NULL && cb->osdep == osdep)
308 for (cb = TAILQ_FIRST(&slp->sl_start); cb != NULL;
309 cb = TAILQ_NEXT(cb, ccb_chain))
311 if (cb->osdep == osdep)
315 for (cb = TAILQ_FIRST(&li->li_discq); cb != NULL;
316 cb = TAILQ_NEXT(cb, ccb_chain))
318 if (cb->osdep == osdep)
325 scsi_low_translate_error_code(struct slccb *cb, struct scsi_low_error_code *tp)
327 if (cb->ccb_error == 0)
328 return tp->error_code;
330 for (tp ++; (cb->ccb_error & tp->error_bits) == 0; tp ++)
332 return tp->error_code;
335 /**************************************************************
336 * SCSI INTERFACE (CAM)
337 **************************************************************/
338 #define SCSI_LOW_MALLOC(size) kmalloc((size), M_DEVBUF, M_INTWAIT)
339 #define SCSI_LOW_FREE(pt) kfree((pt), M_DEVBUF)
340 #define SCSI_LOW_ALLOC_CCB(flags) scsi_low_get_ccb()
342 static void scsi_low_poll_cam (struct cam_sim *);
343 static void scsi_low_cam_rescan_callback (struct cam_periph *, union ccb *);
344 static void scsi_low_rescan_bus_cam (struct scsi_low_softc *);
345 void scsi_low_scsi_action_cam (struct cam_sim *, union ccb *);
347 static int scsi_low_attach_cam (struct scsi_low_softc *);
348 static int scsi_low_world_start_cam (struct scsi_low_softc *);
349 static int scsi_low_dettach_cam (struct scsi_low_softc *);
350 static int scsi_low_ccb_setup_cam (struct scsi_low_softc *, struct slccb *);
351 static int scsi_low_done_cam (struct scsi_low_softc *, struct slccb *);
352 static void scsi_low_timeout_cam (struct scsi_low_softc *, int, int);
354 struct scsi_low_osdep_funcs scsi_low_osdep_funcs_cam = {
356 scsi_low_world_start_cam,
357 scsi_low_dettach_cam,
358 scsi_low_ccb_setup_cam,
363 struct scsi_low_error_code scsi_low_error_code_cam[] = {
365 {SENSEIO, CAM_AUTOSNS_VALID | CAM_REQ_CMP_ERR},
366 {SENSEERR, CAM_AUTOSENSE_FAIL},
367 {UACAERR, CAM_SCSI_STATUS_ERROR},
368 {BUSYERR | STATERR, CAM_SCSI_STATUS_ERROR},
369 {SELTIMEOUTIO, CAM_SEL_TIMEOUT},
370 {TIMEOUTIO, CAM_CMD_TIMEOUT},
371 {PDMAERR, CAM_DATA_RUN_ERR},
372 {PARITYERR, CAM_UNCOR_PARITY},
373 {UBFERR, CAM_UNEXP_BUSFREE},
374 {ABORTIO, CAM_REQ_ABORTED},
375 {-1, CAM_UNREC_HBA_ERROR}
378 #define SIM2SLP(sim) ((struct scsi_low_softc *) cam_sim_softc((sim)))
381 * Please check a polling hz, currently we assume scsi_low_poll() is
384 #define SCSI_LOW_CAM_POLL_HZ 1000 /* OK ? */
387 scsi_low_poll_cam(struct cam_sim *sim)
389 struct scsi_low_softc *slp = SIM2SLP(sim);
391 (*slp->sl_funcs->scsi_low_poll) (slp);
393 if (slp->sl_si.si_poll_count ++ >=
394 SCSI_LOW_CAM_POLL_HZ / SCSI_LOW_TIMEOUT_HZ)
396 slp->sl_si.si_poll_count = 0;
397 scsi_low_timeout_check(slp);
402 scsi_low_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
404 xpt_free_path(ccb->ccb_h.path);
405 kfree(ccb, M_DEVBUF);
409 scsi_low_rescan_bus_cam(struct scsi_low_softc *slp)
411 struct cam_path *path;
412 union ccb *ccb = kmalloc(sizeof(union ccb), M_DEVBUF, M_INTWAIT | M_ZERO);
415 status = xpt_create_path(&path, xpt_periph,
416 cam_sim_path(slp->sl_si.sim), -1, 0);
417 if (status != CAM_REQ_CMP)
420 xpt_setup_ccb(&ccb->ccb_h, path, 5);
421 ccb->ccb_h.func_code = XPT_SCAN_BUS;
422 ccb->ccb_h.cbfcnp = scsi_low_cam_rescan_callback;
423 ccb->crcn.flags = CAM_FLAG_NONE;
428 scsi_low_scsi_action_cam(struct cam_sim *sim, union ccb *ccb)
430 struct scsi_low_softc *slp = SIM2SLP(sim);
431 struct targ_info *ti;
434 u_int lun, flags, msg, target;
437 target = (u_int) (ccb->ccb_h.target_id);
438 lun = (u_int) ccb->ccb_h.target_lun;
440 #ifdef SCSI_LOW_DEBUG
441 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_ACTION, target) != 0)
443 printf("%s: cam_action: func code 0x%x target: %d, lun: %d\n",
444 slp->sl_xname, ccb->ccb_h.func_code, target, lun);
446 #endif /* SCSI_LOW_DEBUG */
448 switch (ccb->ccb_h.func_code) {
449 case XPT_SCSI_IO: /* Execute the requested I/O operation */
450 #ifdef SCSI_LOW_DIAGNOSTIC
451 if (target == CAM_TARGET_WILDCARD || lun == CAM_LUN_WILDCARD)
453 printf("%s: invalid target/lun\n", slp->sl_xname);
454 ccb->ccb_h.status = CAM_REQ_INVALID;
458 #endif /* SCSI_LOW_DIAGNOSTIC */
460 if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)) {
461 ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
466 ti = slp->sl_ti[target];
469 if ((ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
470 flags = CCB_AUTOSENSE | CCB_SCSIIO;
475 li = scsi_low_alloc_li(ti, lun, 1);
477 if (ti->ti_setup_msg != 0)
479 scsi_low_message_enqueue(slp, ti, li, CCB_AUTOSENSE);
482 scsi_low_enqueue(slp, ti, li, cb, flags, 0);
484 #ifdef SCSI_LOW_DEBUG
485 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ABORT_CHECK, target) != 0)
487 scsi_low_test_abort(slp, ti, li);
489 #endif /* SCSI_LOW_DEBUG */
493 case XPT_EN_LUN: /* Enable LUN as a target */
494 case XPT_TARGET_IO: /* Execute target I/O request */
495 case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
496 case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
498 ccb->ccb_h.status = CAM_REQ_INVALID;
502 case XPT_ABORT: /* Abort the specified CCB */
503 #ifdef SCSI_LOW_DIAGNOSTIC
504 if (target == CAM_TARGET_WILDCARD || lun == CAM_LUN_WILDCARD)
506 printf("%s: invalid target/lun\n", slp->sl_xname);
507 ccb->ccb_h.status = CAM_REQ_INVALID;
511 #endif /* SCSI_LOW_DIAGNOSTIC */
514 cb = scsi_low_find_ccb(slp, target, lun, ccb->cab.abort_ccb);
515 rv = scsi_low_abort_ccb(slp, cb);
519 ccb->ccb_h.status = CAM_REQ_CMP;
521 ccb->ccb_h.status = CAM_REQ_INVALID;
525 case XPT_SET_TRAN_SETTINGS: {
526 struct ccb_trans_settings *cts;
529 #ifdef SCSI_LOW_DIAGNOSTIC
530 if (target == CAM_TARGET_WILDCARD)
532 printf("%s: invalid target\n", slp->sl_xname);
533 ccb->ccb_h.status = CAM_REQ_INVALID;
537 #endif /* SCSI_LOW_DIAGNOSTIC */
539 ti = slp->sl_ti[target];
540 if (lun == CAM_LUN_WILDCARD)
544 if ((cts->valid & (CCB_TRANS_BUS_WIDTH_VALID |
545 CCB_TRANS_SYNC_RATE_VALID |
546 CCB_TRANS_SYNC_OFFSET_VALID)) != 0)
548 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
549 val = cts->bus_width;
550 if (val < ti->ti_width)
553 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0) {
554 val = cts->sync_period;
555 if (val == 0 || val > ti->ti_maxsynch.period)
556 ti->ti_maxsynch.period = val;
558 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0) {
559 val = cts->sync_offset;
560 if (val < ti->ti_maxsynch.offset)
561 ti->ti_maxsynch.offset = val;
564 ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_QUIRKS_VALID;
565 scsi_low_calcf_target(ti);
568 if ((cts->valid & (CCB_TRANS_DISC_VALID |
569 CCB_TRANS_TQ_VALID)) != 0)
571 li = scsi_low_alloc_li(ti, lun, 1);
572 if ((cts->valid & CCB_TRANS_DISC_VALID) != 0)
574 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
575 li->li_quirks |= SCSI_LOW_DISK_DISC;
577 li->li_quirks &= ~SCSI_LOW_DISK_DISC;
579 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0)
581 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
582 li->li_quirks |= SCSI_LOW_DISK_QTAG;
584 li->li_quirks &= ~SCSI_LOW_DISK_QTAG;
587 li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_QUIRKS_VALID;
588 scsi_low_calcf_target(ti);
589 scsi_low_calcf_lun(li);
590 if ((slp->sl_show_result & SHOW_CALCF_RES) != 0)
591 scsi_low_calcf_show(li);
595 ccb->ccb_h.status = CAM_REQ_CMP;
600 case XPT_GET_TRAN_SETTINGS: {
601 struct ccb_trans_settings *cts;
605 #ifdef SCSI_LOW_DIAGNOSTIC
606 if (target == CAM_TARGET_WILDCARD)
608 printf("%s: invalid target\n", slp->sl_xname);
609 ccb->ccb_h.status = CAM_REQ_INVALID;
613 #endif /* SCSI_LOW_DIAGNOSTIC */
614 ti = slp->sl_ti[target];
615 if (lun == CAM_LUN_WILDCARD)
619 li = scsi_low_alloc_li(ti, lun, 1);
620 #ifdef CAM_NEW_TRAN_CODE
621 if (li != NULL && cts->type == CTS_TYPE_CURRENT_SETTINGS) {
622 struct ccb_trans_settings_scsi *scsi =
623 &cts->proto_specific.scsi;
624 struct ccb_trans_settings_spi *spi =
625 &cts->xport_specific.spi;
626 #ifdef SCSI_LOW_DIAGNOSTIC
627 if (li->li_flags_valid != SCSI_LOW_LUN_FLAGS_ALL_VALID)
629 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
630 printf("%s: invalid GET_TRANS_CURRENT_SETTINGS call\n",
634 #endif /* SCSI_LOW_DIAGNOSTIC */
635 cts->protocol = PROTO_SCSI;
636 cts->protocol_version = SCSI_REV_2;
637 cts->transport = XPORT_SPI;
638 cts->transport_version = 2;
640 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
641 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
643 diskflags = li->li_diskflags & li->li_cfgflags;
644 if (diskflags & SCSI_LOW_DISK_DISC)
645 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
646 if (diskflags & SCSI_LOW_DISK_QTAG)
647 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
649 spi->sync_period = ti->ti_maxsynch.period;
650 spi->valid |= CTS_SPI_VALID_SYNC_RATE;
651 spi->sync_offset = ti->ti_maxsynch.offset;
652 spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
654 spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
655 spi->bus_width = ti->ti_width;
657 if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
658 scsi->valid = CTS_SCSI_VALID_TQ;
659 spi->valid |= CTS_SPI_VALID_DISC;
663 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
665 if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0)
667 #ifdef SCSI_LOW_DIAGNOSTIC
668 if ((li->li_flags_valid & SCSI_LOW_LUN_FLAGS_DISK_VALID) == 0)
670 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
671 printf("%s: invalid GET_TRANS_USER_SETTINGS call\n",
675 #endif /* SCSI_LOW_DIAGNOSTIC */
676 diskflags = li->li_diskflags & li->li_cfgflags;
677 if ((diskflags & SCSI_LOW_DISK_DISC) != 0)
678 cts->flags |= CCB_TRANS_DISC_ENB;
680 cts->flags &= ~CCB_TRANS_DISC_ENB;
681 if ((diskflags & SCSI_LOW_DISK_QTAG) != 0)
682 cts->flags |= CCB_TRANS_TAG_ENB;
684 cts->flags &= ~CCB_TRANS_TAG_ENB;
686 else if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
688 #ifdef SCSI_LOW_DIAGNOSTIC
689 if (li->li_flags_valid != SCSI_LOW_LUN_FLAGS_ALL_VALID)
691 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
692 printf("%s: invalid GET_TRANS_CURRENT_SETTINGS call\n",
696 #endif /* SCSI_LOW_DIAGNOSTIC */
697 if ((li->li_flags & SCSI_LOW_DISC) != 0)
698 cts->flags |= CCB_TRANS_DISC_ENB;
700 cts->flags &= ~CCB_TRANS_DISC_ENB;
701 if ((li->li_flags & SCSI_LOW_QTAG) != 0)
702 cts->flags |= CCB_TRANS_TAG_ENB;
704 cts->flags &= ~CCB_TRANS_TAG_ENB;
708 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
712 cts->sync_period = ti->ti_maxsynch.period;
713 cts->sync_offset = ti->ti_maxsynch.offset;
714 cts->bus_width = ti->ti_width;
716 cts->valid = CCB_TRANS_SYNC_RATE_VALID
717 | CCB_TRANS_SYNC_OFFSET_VALID
718 | CCB_TRANS_BUS_WIDTH_VALID
719 | CCB_TRANS_DISC_VALID
720 | CCB_TRANS_TQ_VALID;
721 ccb->ccb_h.status = CAM_REQ_CMP;
729 case XPT_CALC_GEOMETRY: { /* not yet HN2 */
730 cam_calc_geometry(&ccb->ccg, /*extended*/1);
735 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
737 scsi_low_restart(slp, SCSI_LOW_RESTART_HARD, NULL);
739 ccb->ccb_h.status = CAM_REQ_CMP;
743 case XPT_TERM_IO: /* Terminate the I/O process */
744 ccb->ccb_h.status = CAM_REQ_INVALID;
748 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
749 #ifdef SCSI_LOW_DIAGNOSTIC
750 if (target == CAM_TARGET_WILDCARD)
752 printf("%s: invalid target\n", slp->sl_xname);
753 ccb->ccb_h.status = CAM_REQ_INVALID;
757 #endif /* SCSI_LOW_DIAGNOSTIC */
759 msg = SCSI_LOW_MSG_RESET;
760 if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL))
762 ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
767 ti = slp->sl_ti[target];
768 if (lun == CAM_LUN_WILDCARD)
772 if ((ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
773 flags = CCB_AUTOSENSE | CCB_NORETRY | CCB_URGENT;
775 flags = CCB_NORETRY | CCB_URGENT;
778 li = scsi_low_alloc_li(ti, lun, 1);
779 scsi_low_enqueue(slp, ti, li, cb, flags, msg);
783 case XPT_PATH_INQ: { /* Path routing inquiry */
784 struct ccb_pathinq *cpi = &ccb->cpi;
786 cpi->version_num = scsi_low_version_major;
787 cpi->hba_inquiry = PI_TAG_ABLE | PI_LINKED_CDB;
788 ti = slp->sl_ti[slp->sl_hostid]; /* host id */
789 if (ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
790 cpi->hba_inquiry |= PI_WIDE_16;
791 if (ti->ti_width > SCSI_LOW_BUS_WIDTH_16)
792 cpi->hba_inquiry |= PI_WIDE_32;
793 if (ti->ti_maxsynch.offset > 0)
794 cpi->hba_inquiry |= PI_SDTR_ABLE;
795 cpi->target_sprt = 0;
797 cpi->hba_eng_cnt = 0;
798 cpi->max_target = slp->sl_ntargs - 1;
799 cpi->max_lun = slp->sl_nluns - 1;
800 cpi->initiator_id = slp->sl_hostid;
801 cpi->bus_id = cam_sim_bus(sim);
802 cpi->base_transfer_speed = 3300;
803 #ifdef CAM_NEW_TRAN_CODE
804 cpi->transport = XPORT_SPI;
805 cpi->transport_version = 2;
806 cpi->protocol = PROTO_SCSI;
807 cpi->protocol_version = SCSI_REV_2;
809 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
810 strncpy(cpi->hba_vid, "SCSI_LOW", HBA_IDLEN);
811 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
812 cpi->unit_number = cam_sim_unit(sim);
813 cpi->ccb_h.status = CAM_REQ_CMP;
819 printf("scsi_low: non support func_code = %d ",
820 ccb->ccb_h.func_code);
821 ccb->ccb_h.status = CAM_REQ_INVALID;
828 scsi_low_attach_cam(struct scsi_low_softc *slp)
830 struct cam_devq *devq;
833 sprintf(slp->sl_xname, "%s%d",
834 DEVPORT_DEVNAME(slp->sl_dev), DEVPORT_DEVUNIT(slp->sl_dev));
836 devq = cam_simq_alloc(SCSI_LOW_NCCB);
841 * ask the adapter what subunits are present
843 tagged_openings = min(slp->sl_openings, SCSI_LOW_MAXNEXUS);
844 slp->sl_si.sim = cam_sim_alloc(scsi_low_scsi_action_cam,
846 DEVPORT_DEVNAME(slp->sl_dev), slp,
847 DEVPORT_DEVUNIT(slp->sl_dev),
848 slp->sl_openings, tagged_openings, devq);
849 cam_simq_release(devq);
850 if (slp->sl_si.sim == NULL) {
854 if (xpt_bus_register(slp->sl_si.sim, 0) != CAM_SUCCESS) {
855 cam_sim_free(slp->sl_si.sim);
856 slp->sl_si.sim = NULL;
860 if (xpt_create_path(&slp->sl_si.path, /*periph*/NULL,
861 cam_sim_path(slp->sl_si.sim), CAM_TARGET_WILDCARD,
862 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
863 xpt_bus_deregister(cam_sim_path(slp->sl_si.sim));
864 cam_sim_free(slp->sl_si.sim);
865 slp->sl_si.sim = NULL;
869 slp->sl_show_result = SHOW_CALCF_RES; /* OK ? */
874 scsi_low_world_start_cam(struct scsi_low_softc *slp)
877 scsi_low_rescan_bus_cam(slp);
882 scsi_low_dettach_cam(struct scsi_low_softc *slp)
884 xpt_async(AC_LOST_DEVICE, slp->sl_si.path, NULL);
885 xpt_free_path(slp->sl_si.path);
886 xpt_bus_deregister(cam_sim_path(slp->sl_si.sim));
887 cam_sim_free(slp->sl_si.sim);
888 slp->sl_si.sim = NULL;
893 scsi_low_ccb_setup_cam(struct scsi_low_softc *slp, struct slccb *cb)
895 union ccb *ccb = (union ccb *) cb->osdep;
897 if ((cb->ccb_flags & CCB_SCSIIO) != 0)
899 cb->ccb_scp.scp_cmd = ccb->csio.cdb_io.cdb_bytes;
900 cb->ccb_scp.scp_cmdlen = (int) ccb->csio.cdb_len;
901 cb->ccb_scp.scp_data = ccb->csio.data_ptr;
902 cb->ccb_scp.scp_datalen = (int) ccb->csio.dxfer_len;
903 if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
904 cb->ccb_scp.scp_direction = SCSI_LOW_WRITE;
905 else /* if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) */
906 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
907 cb->ccb_tcmax = ccb->ccb_h.timeout / 1000;
911 scsi_low_unit_ready_cmd(cb);
913 return SCSI_LOW_START_QTAG;
917 scsi_low_done_cam(struct scsi_low_softc *slp, struct slccb *cb)
921 ccb = (union ccb *) cb->osdep;
922 if (cb->ccb_error == 0)
924 ccb->ccb_h.status = CAM_REQ_CMP;
929 if (cb->ccb_rcnt >= slp->sl_max_retry)
930 cb->ccb_error |= ABORTIO;
932 if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
933 (cb->ccb_error & ABORTIO) == 0)
936 if ((cb->ccb_error & SENSEIO) != 0)
938 memcpy(&ccb->csio.sense_data,
940 sizeof(ccb->csio.sense_data));
943 ccb->ccb_h.status = scsi_low_translate_error_code(cb,
944 &scsi_low_error_code_cam[0]);
946 #ifdef SCSI_LOW_DIAGNOSTIC
947 if ((cb->ccb_flags & CCB_SILENT) == 0 &&
948 cb->ccb_scp.scp_cmdlen > 0 &&
949 (scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
950 SCSI_LOW_CMD_ABORT_WARNING) != 0)
952 printf("%s: WARNING: scsi_low IO abort\n",
954 scsi_low_print(slp, NULL);
956 #endif /* SCSI_LOW_DIAGNOSTIC */
959 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == 0)
960 ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
962 if (cb->ccb_scp.scp_status == ST_UNKNOWN)
963 ccb->csio.scsi_status = 0; /* XXX */
965 ccb->csio.scsi_status = cb->ccb_scp.scp_status;
967 if ((cb->ccb_flags & CCB_NOSDONE) == 0)
973 scsi_low_timeout_cam(struct scsi_low_softc *slp, int ch, int action)
977 case SCSI_LOW_TIMEOUT_CH_IO:
980 case SCSI_LOW_TIMEOUT_START:
981 callout_reset(&slp->sl_si.timeout_ch,
982 hz / SCSI_LOW_TIMEOUT_HZ, scsi_low_timeout, slp);
984 case SCSI_LOW_TIMEOUT_STOP:
985 callout_stop(&slp->sl_si.timeout_ch);
990 case SCSI_LOW_TIMEOUT_CH_ENGAGE:
993 case SCSI_LOW_TIMEOUT_START:
994 callout_reset(&slp->sl_si.engage_ch, 1,
995 scsi_low_engage, slp);
997 case SCSI_LOW_TIMEOUT_STOP:
998 callout_stop(&slp->sl_si.engage_ch);
1002 case SCSI_LOW_TIMEOUT_CH_RECOVER:
1007 /**************************************************************
1008 * scsi low deactivate and activate
1009 **************************************************************/
1011 scsi_low_is_busy(struct scsi_low_softc *slp)
1013 if (slp->sl_nio > 0)
1019 scsi_low_deactivate(struct scsi_low_softc *slp)
1022 slp->sl_flags |= HW_INACTIVE;
1023 (*slp->sl_osdep_fp->scsi_low_osdep_timeout)
1024 (slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_STOP);
1025 (*slp->sl_osdep_fp->scsi_low_osdep_timeout)
1026 (slp, SCSI_LOW_TIMEOUT_CH_ENGAGE, SCSI_LOW_TIMEOUT_STOP);
1032 scsi_low_activate(struct scsi_low_softc *slp)
1037 slp->sl_flags &= ~HW_INACTIVE;
1038 if ((error = scsi_low_restart(slp, SCSI_LOW_RESTART_HARD, NULL)) != 0)
1040 slp->sl_flags |= HW_INACTIVE;
1045 slp->sl_timeout_count = 0;
1046 (*slp->sl_osdep_fp->scsi_low_osdep_timeout)
1047 (slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_START);
1052 /**************************************************************
1054 **************************************************************/
1055 #ifdef SCSI_LOW_DIAGNOSTIC
1056 static void scsi_low_msg_log_init (struct scsi_low_msg_log *);
1057 static void scsi_low_msg_log_write (struct scsi_low_msg_log *, u_int8_t *,
1059 static void scsi_low_msg_log_show (struct scsi_low_msg_log *, char *, int);
1062 scsi_low_msg_log_init(struct scsi_low_msg_log *slmlp)
1064 slmlp->slml_ptr = 0;
1068 scsi_low_msg_log_write(struct scsi_low_msg_log *slmlp, u_int8_t *datap, int len)
1072 if (slmlp->slml_ptr >= SCSI_LOW_MSG_LOG_DATALEN)
1075 ptr = slmlp->slml_ptr ++;
1076 for (ind = 0; ind < sizeof(slmlp->slml_msg[0]) && ind < len; ind ++)
1077 slmlp->slml_msg[ptr].msg[ind] = datap[ind];
1078 for ( ; ind < sizeof(slmlp->slml_msg[0]); ind ++)
1079 slmlp->slml_msg[ptr].msg[ind] = 0;
1083 scsi_low_msg_log_show(struct scsi_low_msg_log *slmlp, char *s, int len)
1087 printf("%s: (%d) ", s, slmlp->slml_ptr);
1088 for (ptr = 0; ptr < slmlp->slml_ptr; ptr ++)
1090 for (ind = 0; ind < len && ind < sizeof(slmlp->slml_msg[0]);
1093 printf("[%x]", (u_int) slmlp->slml_msg[ptr].msg[ind]);
1099 #endif /* SCSI_LOW_DIAGNOSTIC */
1101 /**************************************************************
1103 **************************************************************/
1105 scsi_low_engage(void *arg)
1107 struct scsi_low_softc *slp = arg;
1111 switch (slp->sl_rstep)
1115 (*slp->sl_funcs->scsi_low_power) (slp, SCSI_LOW_ENGAGE);
1116 (*slp->sl_osdep_fp->scsi_low_osdep_timeout) (slp,
1117 SCSI_LOW_TIMEOUT_CH_ENGAGE, SCSI_LOW_TIMEOUT_START);
1122 slp->sl_flags &= ~HW_RESUME;
1123 scsi_low_start(slp);
1133 scsi_low_init(struct scsi_low_softc *slp, u_int flags)
1137 slp->sl_flags |= HW_INITIALIZING;
1139 /* clear power control timeout */
1140 if ((slp->sl_flags & HW_POWERCTRL) != 0)
1142 (*slp->sl_osdep_fp->scsi_low_osdep_timeout) (slp,
1143 SCSI_LOW_TIMEOUT_CH_ENGAGE, SCSI_LOW_TIMEOUT_STOP);
1144 slp->sl_flags &= ~(HW_POWDOWN | HW_RESUME);
1146 slp->sl_powc = SCSI_LOW_POWDOWN_TC;
1149 /* reset current nexus */
1150 scsi_low_reset_nexus(slp, flags);
1151 if ((slp->sl_flags & HW_INACTIVE) != 0)
1157 if (flags != SCSI_LOW_RESTART_SOFT)
1159 rv = ((*slp->sl_funcs->scsi_low_init) (slp, flags));
1163 slp->sl_flags &= ~HW_INITIALIZING;
1167 /**************************************************************
1169 **************************************************************/
1170 static struct lun_info *
1171 scsi_low_alloc_li(struct targ_info *ti, int lun, int alloc)
1173 struct scsi_low_softc *slp = ti->ti_sc;
1174 struct lun_info *li;
1176 li = LIST_FIRST(&ti->ti_litab);
1179 if (li->li_lun == lun)
1182 while ((li = LIST_NEXT(li, lun_chain)) != NULL)
1184 if (li->li_lun == lun)
1186 LIST_REMOVE(li, lun_chain);
1187 LIST_INSERT_HEAD(&ti->ti_litab, li, lun_chain);
1196 li = SCSI_LOW_MALLOC(ti->ti_lunsize);
1198 panic("no lun info mem");
1200 SCSI_LOW_BZERO(li, ti->ti_lunsize);
1204 li->li_cfgflags = SCSI_LOW_SYNC | SCSI_LOW_LINK | SCSI_LOW_DISC |
1206 li->li_quirks = li->li_diskflags = SCSI_LOW_DISK_LFLAGS;
1207 li->li_flags_valid = SCSI_LOW_LUN_FLAGS_USER_VALID;
1208 #ifdef SCSI_LOW_FLAGS_QUIRKS_OK
1209 li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_QUIRKS_VALID;
1210 #endif /* SCSI_LOW_FLAGS_QUIRKS_OK */
1212 li->li_qtagbits = (u_int) -1;
1214 TAILQ_INIT(&li->li_discq);
1215 LIST_INSERT_HEAD(&ti->ti_litab, li, lun_chain);
1217 /* host specific structure initialization per lun */
1218 if (slp->sl_funcs->scsi_low_lun_init != NULL)
1219 (*slp->sl_funcs->scsi_low_lun_init)
1220 (slp, ti, li, SCSI_LOW_INFO_ALLOC);
1221 scsi_low_calcf_lun(li);
1225 /**************************************************************
1226 * allocate targ_info
1227 **************************************************************/
1228 static struct targ_info *
1229 scsi_low_alloc_ti(struct scsi_low_softc *slp, int targ)
1231 struct targ_info *ti;
1233 if (TAILQ_FIRST(&slp->sl_titab) == NULL)
1234 TAILQ_INIT(&slp->sl_titab);
1236 ti = SCSI_LOW_MALLOC(slp->sl_targsize);
1238 panic("%s short of memory", slp->sl_xname);
1240 SCSI_LOW_BZERO(ti, slp->sl_targsize);
1244 slp->sl_ti[targ] = ti;
1245 TAILQ_INSERT_TAIL(&slp->sl_titab, ti, ti_chain);
1246 LIST_INIT(&ti->ti_litab);
1248 ti->ti_quirks = ti->ti_diskflags = SCSI_LOW_DISK_TFLAGS;
1249 ti->ti_owidth = SCSI_LOW_BUS_WIDTH_8;
1250 ti->ti_flags_valid = SCSI_LOW_TARG_FLAGS_USER_VALID;
1251 #ifdef SCSI_LOW_FLAGS_QUIRKS_OK
1252 ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_QUIRKS_VALID;
1253 #endif /* SCSI_LOW_FLAGS_QUIRKS_OK */
1255 if (slp->sl_funcs->scsi_low_targ_init != NULL)
1257 (*slp->sl_funcs->scsi_low_targ_init)
1258 (slp, ti, SCSI_LOW_INFO_ALLOC);
1260 scsi_low_calcf_target(ti);
1265 scsi_low_free_ti(struct scsi_low_softc *slp)
1267 struct targ_info *ti, *tib;
1268 struct lun_info *li, *nli;
1270 for (ti = TAILQ_FIRST(&slp->sl_titab); ti; ti = tib)
1272 for (li = LIST_FIRST(&ti->ti_litab); li != NULL; li = nli)
1274 if (slp->sl_funcs->scsi_low_lun_init != NULL)
1276 (*slp->sl_funcs->scsi_low_lun_init)
1277 (slp, ti, li, SCSI_LOW_INFO_DEALLOC);
1279 nli = LIST_NEXT(li, lun_chain);
1283 if (slp->sl_funcs->scsi_low_targ_init != NULL)
1285 (*slp->sl_funcs->scsi_low_targ_init)
1286 (slp, ti, SCSI_LOW_INFO_DEALLOC);
1288 tib = TAILQ_NEXT(ti, ti_chain);
1293 /**************************************************************
1295 **************************************************************/
1297 scsi_low_bus_idle(struct scsi_low_softc *slp)
1299 slp->sl_retry_sel = 0;
1300 if (slp->sl_Tnexus == NULL)
1301 scsi_low_start(slp);
1305 scsi_low_timeout(void *arg)
1307 struct scsi_low_softc *slp = arg;
1310 scsi_low_timeout_check(slp);
1311 (*slp->sl_osdep_fp->scsi_low_osdep_timeout)
1312 (slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_START);
1317 scsi_low_timeout_check(struct scsi_low_softc *slp)
1319 struct targ_info *ti;
1320 struct lun_info *li;
1321 struct slccb *cb = NULL; /* XXX */
1323 /* selection restart */
1324 if (slp->sl_retry_sel != 0)
1326 slp->sl_retry_sel = 0;
1327 if (slp->sl_Tnexus != NULL)
1330 cb = TAILQ_FIRST(&slp->sl_start);
1334 if (cb->ccb_selrcnt >= SCSI_LOW_MAX_SELECTION_RETRY)
1336 cb->ccb_flags |= CCB_NORETRY;
1337 cb->ccb_error |= SELTIMEOUTIO;
1338 if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
1339 panic("%s: ccb not finished", slp->sl_xname);
1342 if (slp->sl_Tnexus == NULL)
1343 scsi_low_start(slp);
1346 /* call hardware timeout */
1348 if (slp->sl_funcs->scsi_low_timeout != NULL)
1350 (*slp->sl_funcs->scsi_low_timeout) (slp);
1353 if (slp->sl_timeout_count ++ <
1354 SCSI_LOW_TIMEOUT_CHECK_INTERVAL * SCSI_LOW_TIMEOUT_HZ)
1357 slp->sl_timeout_count = 0;
1358 if (slp->sl_nio > 0)
1360 if ((cb = slp->sl_Qnexus) != NULL)
1362 cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1366 else if (slp->sl_disc == 0)
1368 if ((cb = TAILQ_FIRST(&slp->sl_start)) == NULL)
1371 cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1375 else for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
1376 ti = TAILQ_NEXT(ti, ti_chain))
1378 if (ti->ti_disc == 0)
1381 for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
1382 li = LIST_NEXT(li, lun_chain))
1384 for (cb = TAILQ_FIRST(&li->li_discq);
1386 cb = TAILQ_NEXT(cb, ccb_chain))
1389 SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1397 else if ((slp->sl_flags & HW_POWERCTRL) != 0)
1399 if ((slp->sl_flags & (HW_POWDOWN | HW_RESUME)) != 0)
1402 if (slp->sl_active != 0)
1404 slp->sl_powc = SCSI_LOW_POWDOWN_TC;
1410 if (slp->sl_powc < 0)
1412 slp->sl_powc = SCSI_LOW_POWDOWN_TC;
1413 slp->sl_flags |= HW_POWDOWN;
1414 (*slp->sl_funcs->scsi_low_power)
1415 (slp, SCSI_LOW_POWDOWN);
1421 cb->ccb_error |= TIMEOUTIO;
1422 printf("%s: slccb (0x%lx) timeout!\n", slp->sl_xname, (u_long) cb);
1423 scsi_low_info(slp, NULL, "scsi bus hangup. try to recover.");
1424 scsi_low_init(slp, SCSI_LOW_RESTART_HARD);
1425 scsi_low_start(slp);
1431 scsi_low_abort_ccb(struct scsi_low_softc *slp, struct slccb *cb)
1433 struct targ_info *ti;
1434 struct lun_info *li;
1439 if ((cb->ccb_omsgoutflag &
1440 (SCSI_LOW_MSG_ABORT | SCSI_LOW_MSG_ABORT_QTAG)) != 0)
1445 if (cb->ccb_tag == SCSI_LOW_UNKTAG)
1446 msg = SCSI_LOW_MSG_ABORT;
1448 msg = SCSI_LOW_MSG_ABORT_QTAG;
1450 cb->ccb_error |= ABORTIO;
1451 cb->ccb_flags |= CCB_NORETRY;
1452 scsi_low_ccb_message_assert(cb, msg);
1454 if (cb == slp->sl_Qnexus)
1456 scsi_low_assert_msg(slp, ti, msg, 1);
1458 else if ((cb->ccb_flags & CCB_DISCQ) != 0)
1460 if (scsi_low_revoke_ccb(slp, cb, 0) == NULL)
1461 panic("%s: revoked ccb done", slp->sl_xname);
1463 cb->ccb_flags |= CCB_STARTQ;
1464 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1466 if (slp->sl_Tnexus == NULL)
1467 scsi_low_start(slp);
1471 if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
1472 panic("%s: revoked ccb retried", slp->sl_xname);
1477 /**************************************************************
1478 * Generic SCSI INTERFACE
1479 **************************************************************/
1481 scsi_low_attach(struct scsi_low_softc *slp, int openings, int ntargs, int nluns,
1482 int targsize, int lunsize)
1484 struct targ_info *ti;
1485 struct lun_info *li;
1488 slp->sl_osdep_fp = &scsi_low_osdep_funcs_cam;
1490 if (slp->sl_osdep_fp == NULL)
1491 panic("scsi_low: interface not spcified");
1493 if (ntargs > SCSI_LOW_NTARGETS)
1495 printf("scsi_low: %d targets are too large\n", ntargs);
1496 printf("change kernel options SCSI_LOW_NTARGETS");
1501 slp->sl_openings = (SCSI_LOW_NCCB / ntargs);
1503 slp->sl_openings = openings;
1504 slp->sl_ntargs = ntargs;
1505 slp->sl_nluns = nluns;
1506 slp->sl_max_retry = SCSI_LOW_MAX_RETRY;
1508 if (lunsize < sizeof(struct lun_info))
1509 lunsize = sizeof(struct lun_info);
1511 if (targsize < sizeof(struct targ_info))
1512 targsize = sizeof(struct targ_info);
1514 slp->sl_targsize = targsize;
1515 for (i = 0; i < ntargs; i ++)
1517 ti = scsi_low_alloc_ti(slp, i);
1518 ti->ti_lunsize = lunsize;
1519 li = scsi_low_alloc_li(ti, 0, 1);
1522 /* initialize queue */
1523 nccb = openings * ntargs;
1524 if (nccb >= SCSI_LOW_NCCB || nccb <= 0)
1525 nccb = SCSI_LOW_NCCB;
1526 scsi_low_init_ccbque(nccb);
1527 TAILQ_INIT(&slp->sl_start);
1529 /* call os depend attach */
1530 callout_init(&slp->sl_si.timeout_ch);
1531 callout_init(&slp->sl_si.engage_ch);
1534 rv = (*slp->sl_osdep_fp->scsi_low_osdep_attach) (slp);
1538 printf("%s: scsi_low_attach: osdep attach failed\n",
1543 /* check hardware */
1544 SCSI_LOW_DELAY(1000); /* wait for 1ms */
1545 if (scsi_low_init(slp, SCSI_LOW_RESTART_HARD) != 0)
1548 printf("%s: scsi_low_attach: initialization failed\n",
1553 /* start watch dog */
1554 slp->sl_timeout_count = 0;
1555 (*slp->sl_osdep_fp->scsi_low_osdep_timeout)
1556 (slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_START);
1557 LIST_INSERT_HEAD(&sl_tab, slp, sl_chain);
1560 scsi_low_abort_ccb(slp, scsi_low_find_ccb(slp, 0, 0, NULL));
1562 #ifdef SCSI_LOW_START_UP_CHECK
1563 /* probing devices */
1564 scsi_low_start_up(slp);
1565 #endif /* SCSI_LOW_START_UP_CHECK */
1567 /* call os depend attach done*/
1568 (*slp->sl_osdep_fp->scsi_low_osdep_world_start) (slp);
1574 scsi_low_dettach(struct scsi_low_softc *slp)
1579 if (scsi_low_is_busy(slp) != 0)
1585 scsi_low_deactivate(slp);
1587 rv = (*slp->sl_osdep_fp->scsi_low_osdep_dettach) (slp);
1594 scsi_low_free_ti(slp);
1595 LIST_REMOVE(slp, sl_chain);
1600 /**************************************************************
1602 **************************************************************/
1604 scsi_low_enqueue(struct scsi_low_softc *slp, struct targ_info *ti,
1605 struct lun_info *li, struct slccb *cb, u_int flags,
1612 scsi_low_ccb_message_assert(cb, msg);
1614 cb->ccb_otag = cb->ccb_tag = SCSI_LOW_UNKTAG;
1615 scsi_low_alloc_qtag(cb);
1617 cb->ccb_flags = flags | CCB_STARTQ;
1618 cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
1619 cb->ccb_error |= PENDINGIO;
1621 if ((flags & CCB_URGENT) != 0)
1623 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1627 TAILQ_INSERT_TAIL(&slp->sl_start, cb, ccb_chain);
1632 if (slp->sl_Tnexus == NULL)
1633 scsi_low_start(slp);
1638 scsi_low_message_enqueue(struct scsi_low_softc *slp, struct targ_info *ti,
1639 struct lun_info *li, u_int flags)
1644 tmsgflags = ti->ti_setup_msg;
1645 ti->ti_setup_msg = 0;
1647 flags |= CCB_NORETRY;
1648 if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
1653 scsi_low_enqueue(slp, ti, li, cb, flags, tmsgflags);
1657 /**************************************************************
1658 * Generic Start & Done
1659 **************************************************************/
1660 #define SLSC_MODE_SENSE_SHORT 0x1a
1661 static u_int8_t ss_cmd[6] = {START_STOP, 0, 0, 0, SSS_START, 0};
1662 static u_int8_t sms_cmd[6] = {SLSC_MODE_SENSE_SHORT, 0x08, 0x0a, 0,
1663 sizeof(struct scsi_low_mode_sense_data), 0};
1664 static u_int8_t inq_cmd[6] = {INQUIRY, 0, 0, 0,
1665 sizeof(struct scsi_low_inq_data), 0};
1666 static u_int8_t unit_ready_cmd[6];
1667 static int scsi_low_setup_start (struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *);
1668 static int scsi_low_sense_abort_start (struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *);
1669 static int scsi_low_resume (struct scsi_low_softc *);
1672 scsi_low_unit_ready_cmd(struct slccb *cb)
1674 cb->ccb_scp.scp_cmd = unit_ready_cmd;
1675 cb->ccb_scp.scp_cmdlen = sizeof(unit_ready_cmd);
1676 cb->ccb_scp.scp_datalen = 0;
1677 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1682 scsi_low_sense_abort_start(struct scsi_low_softc *slp, struct targ_info *ti,
1683 struct lun_info *li, struct slccb *cb)
1685 cb->ccb_scp.scp_cmdlen = 6;
1686 SCSI_LOW_BZERO(cb->ccb_scsi_cmd, cb->ccb_scp.scp_cmdlen);
1687 cb->ccb_scsi_cmd[0] = REQUEST_SENSE;
1688 cb->ccb_scsi_cmd[4] = sizeof(cb->ccb_sense);
1689 cb->ccb_scp.scp_cmd = cb->ccb_scsi_cmd;
1690 cb->ccb_scp.scp_data = (u_int8_t *) &cb->ccb_sense;
1691 cb->ccb_scp.scp_datalen = sizeof(cb->ccb_sense);
1692 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1694 scsi_low_ccb_message_clear(cb);
1695 if ((cb->ccb_flags & CCB_CLEARQ) != 0)
1697 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
1701 SCSI_LOW_BZERO(&cb->ccb_sense, sizeof(cb->ccb_sense));
1702 #ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
1703 scsi_low_assert_msg(slp, ti, ti->ti_setup_msg_done, 0);
1704 #endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
1707 return SCSI_LOW_START_NO_QTAG;
1711 scsi_low_setup_start(struct scsi_low_softc *slp, struct targ_info *ti,
1712 struct lun_info *li, struct slccb *cb)
1714 switch(li->li_state)
1716 case SCSI_LOW_LUN_SLEEP:
1717 scsi_low_unit_ready_cmd(cb);
1720 case SCSI_LOW_LUN_START:
1721 cb->ccb_scp.scp_cmd = ss_cmd;
1722 cb->ccb_scp.scp_cmdlen = sizeof(ss_cmd);
1723 cb->ccb_scp.scp_datalen = 0;
1724 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1728 case SCSI_LOW_LUN_INQ:
1729 cb->ccb_scp.scp_cmd = inq_cmd;
1730 cb->ccb_scp.scp_cmdlen = sizeof(inq_cmd);
1731 cb->ccb_scp.scp_data = (u_int8_t *)&li->li_inq;
1732 cb->ccb_scp.scp_datalen = sizeof(li->li_inq);
1733 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1737 case SCSI_LOW_LUN_MODEQ:
1738 cb->ccb_scp.scp_cmd = sms_cmd;
1739 cb->ccb_scp.scp_cmdlen = sizeof(sms_cmd);
1740 cb->ccb_scp.scp_data = (u_int8_t *)&li->li_sms;
1741 cb->ccb_scp.scp_datalen = sizeof(li->li_sms);
1742 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1744 return SCSI_LOW_START_QTAG;
1747 panic("%s: no setup phase", slp->sl_xname);
1750 return SCSI_LOW_START_NO_QTAG;
1754 scsi_low_resume(struct scsi_low_softc *slp)
1756 if (slp->sl_flags & HW_RESUME)
1758 slp->sl_flags &= ~HW_POWDOWN;
1759 if (slp->sl_funcs->scsi_low_power != NULL)
1761 slp->sl_flags |= HW_RESUME;
1763 (*slp->sl_funcs->scsi_low_power) (slp, SCSI_LOW_ENGAGE);
1764 (*slp->sl_osdep_fp->scsi_low_osdep_timeout)
1765 (slp, SCSI_LOW_TIMEOUT_CH_ENGAGE,
1766 SCSI_LOW_TIMEOUT_START);
1773 scsi_low_start(struct scsi_low_softc *slp)
1775 struct targ_info *ti;
1776 struct lun_info *li;
1780 /* check hardware exists or under initializations ? */
1781 if ((slp->sl_flags & (HW_INACTIVE | HW_INITIALIZING)) != 0)
1784 /* check hardware power up ? */
1785 if ((slp->sl_flags & HW_POWERCTRL) != 0)
1788 if (slp->sl_flags & (HW_POWDOWN | HW_RESUME))
1790 if (scsi_low_resume(slp) == EJUSTRETURN)
1796 #ifdef SCSI_LOW_DIAGNOSTIC
1797 if (slp->sl_Tnexus || slp->sl_Lnexus || slp->sl_Qnexus)
1799 scsi_low_info(slp, NULL, "NEXUS INCOSISTENT");
1800 panic("%s: inconsistent", slp->sl_xname);
1802 #endif /* SCSI_LOW_DIAGNOSTIC */
1804 for (cb = TAILQ_FIRST(&slp->sl_start); cb != NULL;
1805 cb = TAILQ_NEXT(cb, ccb_chain))
1809 if (li->li_disc == 0)
1811 goto scsi_low_cmd_start;
1813 else if (li->li_nqio > 0)
1815 if (li->li_nqio < li->li_maxnqio ||
1816 (cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
1817 goto scsi_low_cmd_start;
1823 cb->ccb_flags &= ~CCB_STARTQ;
1824 TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
1827 /* clear all error flag bits (for restart) */
1829 cb->ccb_datalen = -1;
1830 cb->ccb_scp.scp_status = ST_UNKNOWN;
1832 /* setup nexus pointer */
1833 slp->sl_Qnexus = cb;
1834 slp->sl_Lnexus = li;
1835 slp->sl_Tnexus = ti;
1837 /* initialize msgsys */
1838 scsi_low_init_msgsys(slp, ti);
1841 if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
1843 /* CA state or forced abort */
1844 rv = scsi_low_sense_abort_start(slp, ti, li, cb);
1846 else if (li->li_state >= SCSI_LOW_LUN_OK)
1848 cb->ccb_flags &= ~CCB_INTERNAL;
1849 rv = (*slp->sl_osdep_fp->scsi_low_osdep_ccb_setup) (slp, cb);
1850 if (cb->ccb_msgoutflag != 0)
1852 scsi_low_ccb_message_exec(slp, cb);
1857 cb->ccb_flags |= CCB_INTERNAL;
1858 rv = scsi_low_setup_start(slp, ti, li, cb);
1862 #define SCSI_LOW_QTAG_OK (SCSI_LOW_QTAG | SCSI_LOW_DISC)
1864 if (rv == SCSI_LOW_START_QTAG &&
1865 (li->li_flags & SCSI_LOW_QTAG_OK) == SCSI_LOW_QTAG_OK &&
1870 scsi_low_activate_qtag(cb);
1871 if ((scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
1872 SCSI_LOW_CMD_ORDERED_QTAG) != 0)
1873 qmsg = SCSI_LOW_MSG_ORDERED_QTAG;
1874 else if ((cb->ccb_flags & CCB_URGENT) != 0)
1875 qmsg = SCSI_LOW_MSG_HEAD_QTAG;
1877 qmsg = SCSI_LOW_MSG_SIMPLE_QTAG;
1878 scsi_low_assert_msg(slp, ti, qmsg, 0);
1882 if (cb->ccb_tcmax < SCSI_LOW_MIN_TOUT)
1883 cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
1884 cb->ccb_tc = cb->ccb_tcmax;
1886 /* setup saved scsi data pointer */
1887 cb->ccb_sscp = cb->ccb_scp;
1889 /* setup current scsi pointer */
1890 slp->sl_scp = cb->ccb_sscp;
1891 slp->sl_error = cb->ccb_error;
1893 /* assert always an identify msg */
1894 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_IDENTIFY, 0);
1897 #ifdef SCSI_LOW_DIAGNOSTIC
1898 scsi_low_msg_log_init(&ti->ti_log_msgin);
1899 scsi_low_msg_log_init(&ti->ti_log_msgout);
1900 #endif /* SCSI_LOW_DIAGNOSTIC */
1902 /* selection start */
1904 rv = ((*slp->sl_funcs->scsi_low_start_bus) (slp, cb));
1905 if (rv == SCSI_LOW_START_OK)
1907 #ifdef SCSI_LOW_STATICS
1908 scsi_low_statics.nexus_win ++;
1909 #endif /* SCSI_LOW_STATICS */
1913 scsi_low_arbit_fail(slp, cb);
1914 #ifdef SCSI_LOW_STATICS
1915 scsi_low_statics.nexus_fail ++;
1916 #endif /* SCSI_LOW_STATICS */
1920 scsi_low_arbit_fail(struct scsi_low_softc *slp, struct slccb *cb)
1922 struct targ_info *ti = cb->ti;
1924 scsi_low_deactivate_qtag(cb);
1925 scsi_low_ccb_message_retry(cb);
1926 cb->ccb_flags |= CCB_STARTQ;
1927 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1929 scsi_low_bus_release(slp, ti);
1932 if (slp->sl_disc == 0)
1934 #ifdef SCSI_LOW_DIAGNOSTIC
1935 printf("%s: try selection again\n", slp->sl_xname);
1936 #endif /* SCSI_LOW_DIAGNOSTIC */
1937 slp->sl_retry_sel = 1;
1942 scsi_low_bus_release(struct scsi_low_softc *slp, struct targ_info *ti)
1944 if (ti->ti_disc > 0)
1946 SCSI_LOW_SETUP_PHASE(ti, PH_DISC);
1950 SCSI_LOW_SETUP_PHASE(ti, PH_NULL);
1953 /* clear all nexus pointer */
1954 slp->sl_Qnexus = NULL;
1955 slp->sl_Lnexus = NULL;
1956 slp->sl_Tnexus = NULL;
1958 /* clear selection assert */
1959 slp->sl_selid = NULL;
1961 /* clear nexus data */
1962 slp->sl_scp.scp_direction = SCSI_LOW_RWUNK;
1964 /* clear phase change counter */
1965 slp->sl_ph_count = 0;
1969 scsi_low_setup_done(struct scsi_low_softc *slp, struct slccb *cb)
1971 struct targ_info *ti;
1972 struct lun_info *li;
1977 if (cb->ccb_rcnt >= slp->sl_max_retry)
1979 cb->ccb_error |= ABORTIO;
1980 return SCSI_LOW_DONE_COMPLETE;
1983 /* XXX: special huck for selection timeout */
1984 if (li->li_state == SCSI_LOW_LUN_SLEEP &&
1985 (cb->ccb_error & SELTIMEOUTIO) != 0)
1987 cb->ccb_error |= ABORTIO;
1988 return SCSI_LOW_DONE_COMPLETE;
1991 switch(li->li_state)
1993 case SCSI_LOW_LUN_INQ:
1994 if (cb->ccb_error != 0)
1997 ~(SCSI_LOW_DISK_LINK | SCSI_LOW_DISK_QTAG);
2001 ~(SCSI_LOW_DISK_SYNC | SCSI_LOW_DISK_WIDE);
2003 else if ((li->li_inq.sd_version & 7) >= 2 ||
2004 (li->li_inq.sd_len >= 4))
2006 if ((li->li_inq.sd_support & 0x2) == 0)
2007 li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
2008 if ((li->li_inq.sd_support & 0x8) == 0)
2009 li->li_diskflags &= ~SCSI_LOW_DISK_LINK;
2012 if ((li->li_inq.sd_support & 0x10) == 0)
2013 ti->ti_diskflags &= ~SCSI_LOW_DISK_SYNC;
2014 if ((li->li_inq.sd_support & 0x20) == 0)
2015 ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE_16;
2016 if ((li->li_inq.sd_support & 0x40) == 0)
2017 ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE_32;
2022 ~(SCSI_LOW_DISK_QTAG | SCSI_LOW_DISK_LINK);
2025 ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE;
2027 ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_DISK_VALID;
2029 scsi_low_calcf_target(ti);
2030 scsi_low_calcf_lun(li);
2033 case SCSI_LOW_LUN_MODEQ:
2034 if (cb->ccb_error != 0)
2036 if (cb->ccb_error & SENSEIO)
2038 #ifdef SCSI_LOW_DEBUG
2039 if (scsi_low_debug & SCSI_LOW_DEBUG_SENSE)
2041 printf("SENSE: [%x][%x][%x][%x][%x]\n",
2042 (u_int) cb->ccb_sense.error_code,
2043 (u_int) cb->ccb_sense.segment,
2044 (u_int) cb->ccb_sense.flags,
2045 (u_int) cb->ccb_sense.add_sense_code,
2046 (u_int) cb->ccb_sense.add_sense_code_qual);
2048 #endif /* SCSI_LOW_DEBUG */
2052 li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
2055 else if ((li->li_sms.sms_cmp.cmp_page & 0x3f) == 0x0a)
2057 if (li->li_sms.sms_cmp.cmp_qc & 0x02)
2058 li->li_qflags |= SCSI_LOW_QFLAG_CA_QCLEAR;
2060 li->li_qflags &= ~SCSI_LOW_QFLAG_CA_QCLEAR;
2061 if ((li->li_sms.sms_cmp.cmp_qc & 0x01) != 0)
2062 li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
2064 li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_DISK_VALID;
2065 scsi_low_calcf_lun(li);
2073 if (li->li_state == SCSI_LOW_LUN_OK)
2075 scsi_low_calcf_target(ti);
2076 scsi_low_calcf_lun(li);
2077 if (li->li_flags_valid == SCSI_LOW_LUN_FLAGS_ALL_VALID &&
2078 (slp->sl_show_result & SHOW_CALCF_RES) != 0)
2080 scsi_low_calcf_show(li);
2085 return SCSI_LOW_DONE_RETRY;
2089 scsi_low_done(struct scsi_low_softc *slp, struct slccb *cb)
2093 if (cb->ccb_error == 0)
2095 if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
2097 #ifdef SCSI_LOW_QCLEAR_AFTER_CA
2099 * SCSI-2 draft suggests
2100 * page 0x0a QErr bit determins if
2101 * the target aborts or continues
2102 * the queueing io's after CA state resolved.
2103 * However many targets seem not to support
2104 * the page 0x0a. Thus we should manually clear the
2105 * queuing io's after CA state.
2107 if ((cb->ccb_flags & CCB_CLEARQ) == 0)
2110 cb->ccb_flags |= CCB_CLEARQ;
2113 #endif /* SCSI_LOW_QCLEAR_AFTER_CA */
2115 if ((cb->ccb_flags & CCB_SENSE) != 0)
2116 cb->ccb_error |= (SENSEIO | ABORTIO);
2117 cb->ccb_flags &= ~(CCB_SENSE | CCB_CLEARQ);
2119 else switch (cb->ccb_sscp.scp_status)
2125 if (cb->ccb_datalen == 0 ||
2126 cb->ccb_scp.scp_datalen == 0)
2129 if (cb->ccb_scp.scp_cmdlen > 0 &&
2130 (scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
2131 SCSI_LOW_CMD_RESIDUAL_CHK) == 0)
2134 cb->ccb_error |= PDMAERR;
2139 cb->ccb_error |= (BUSYERR | STATERR);
2143 cb->ccb_error |= (STATERR | ABORTIO);
2148 if (cb->ccb_flags & (CCB_AUTOSENSE | CCB_INTERNAL))
2151 cb->ccb_flags |= CCB_SENSE;
2154 cb->ccb_error |= (UACAERR | STATERR | ABORTIO);
2159 cb->ccb_error |= FATALIO;
2165 if (cb->ccb_flags & CCB_SENSE)
2167 cb->ccb_error |= (SENSEERR | ABORTIO);
2169 cb->ccb_flags &= ~(CCB_CLEARQ | CCB_SENSE);
2173 if ((cb->ccb_flags & CCB_INTERNAL) != 0)
2175 if (scsi_low_setup_done(slp, cb) == SCSI_LOW_DONE_RETRY)
2179 /* check a ccb msgout flag */
2180 if (cb->ccb_omsgoutflag != 0)
2182 #define SCSI_LOW_MSG_ABORT_OK (SCSI_LOW_MSG_ABORT | \
2183 SCSI_LOW_MSG_ABORT_QTAG | \
2184 SCSI_LOW_MSG_CLEAR_QTAG | \
2185 SCSI_LOW_MSG_TERMIO)
2187 if ((cb->ccb_omsgoutflag & SCSI_LOW_MSG_ABORT_OK) != 0)
2189 cb->ccb_error |= ABORTIO;
2193 /* call OS depend done */
2194 if (cb->osdep != NULL)
2196 rv = (*slp->sl_osdep_fp->scsi_low_osdep_done) (slp, cb);
2197 if (rv == EJUSTRETURN)
2200 else if (cb->ccb_error != 0)
2202 if (cb->ccb_rcnt >= slp->sl_max_retry)
2203 cb->ccb_error |= ABORTIO;
2205 if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
2206 (cb->ccb_error & ABORTIO) == 0)
2210 /* free our target */
2211 #ifdef SCSI_LOW_DEBUG
2212 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
2214 printf(">> SCSI_LOW_DONE_COMPLETE ===============\n");
2215 scsi_low_print(slp, NULL);
2217 #endif /* SCSI_LOW_DEBUG */
2219 scsi_low_deactivate_qtag(cb);
2220 scsi_low_dealloc_qtag(cb);
2221 scsi_low_free_ccb(cb);
2223 return SCSI_LOW_DONE_COMPLETE;
2226 #ifdef SCSI_LOW_DEBUG
2227 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
2229 printf("** SCSI_LOW_DONE_RETRY ===============\n");
2230 scsi_low_print(slp, NULL);
2232 #endif /* SCSI_LOW_DEBUG */
2235 scsi_low_deactivate_qtag(cb);
2236 scsi_low_ccb_message_retry(cb);
2237 return SCSI_LOW_DONE_RETRY;
2240 /**************************************************************
2242 **************************************************************/
2244 scsi_low_reset_nexus_target(struct scsi_low_softc *slp, struct targ_info *ti,
2247 struct lun_info *li;
2249 for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
2250 li = LIST_NEXT(li, lun_chain))
2252 scsi_low_reset_nexus_lun(slp, li, fdone);
2253 li->li_state = SCSI_LOW_LUN_SLEEP;
2258 ti->ti_setup_msg = 0;
2259 ti->ti_setup_msg_done = 0;
2261 ti->ti_osynch.offset = ti->ti_osynch.period = 0;
2262 ti->ti_owidth = SCSI_LOW_BUS_WIDTH_8;
2264 ti->ti_diskflags = SCSI_LOW_DISK_TFLAGS;
2265 ti->ti_flags_valid &= ~SCSI_LOW_TARG_FLAGS_DISK_VALID;
2267 if (slp->sl_funcs->scsi_low_targ_init != NULL)
2269 ((*slp->sl_funcs->scsi_low_targ_init)
2270 (slp, ti, SCSI_LOW_INFO_REVOKE));
2272 scsi_low_calcf_target(ti);
2274 for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
2275 li = LIST_NEXT(li, lun_chain))
2279 li->li_diskflags = SCSI_LOW_DISK_LFLAGS;
2280 li->li_flags_valid &= ~SCSI_LOW_LUN_FLAGS_DISK_VALID;
2282 if (slp->sl_funcs->scsi_low_lun_init != NULL)
2284 ((*slp->sl_funcs->scsi_low_lun_init)
2285 (slp, ti, li, SCSI_LOW_INFO_REVOKE));
2287 scsi_low_calcf_lun(li);
2292 scsi_low_reset_nexus(struct scsi_low_softc *slp, int fdone)
2294 struct targ_info *ti;
2295 struct slccb *cb, *topcb;
2297 if ((cb = slp->sl_Qnexus) != NULL)
2299 topcb = scsi_low_revoke_ccb(slp, cb, fdone);
2306 for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
2307 ti = TAILQ_NEXT(ti, ti_chain))
2309 scsi_low_reset_nexus_target(slp, ti, fdone);
2310 scsi_low_bus_release(slp, ti);
2311 scsi_low_init_msgsys(slp, ti);
2316 topcb->ccb_flags |= CCB_STARTQ;
2317 TAILQ_INSERT_HEAD(&slp->sl_start, topcb, ccb_chain);
2321 slp->sl_retry_sel = 0;
2322 slp->sl_flags &= ~HW_PDMASTART;
2327 static char tw_chars[] = "|/-\\";
2328 #define TWIDDLEWAIT 10000
2331 scsi_low_twiddle_wait(void)
2334 cnputc(tw_chars[tw_pos++]);
2335 tw_pos %= (sizeof(tw_chars) - 1);
2336 SCSI_LOW_DELAY(TWIDDLEWAIT);
2340 scsi_low_bus_reset(struct scsi_low_softc *slp)
2344 (*slp->sl_funcs->scsi_low_bus_reset) (slp);
2346 printf("%s: try to reset scsi bus ", slp->sl_xname);
2347 for (i = 0; i <= SCSI2_RESET_DELAY / TWIDDLEWAIT ; i++)
2348 scsi_low_twiddle_wait();
2354 scsi_low_restart(struct scsi_low_softc *slp, int flags, u_char *s)
2359 printf("%s: scsi bus restart. reason: %s\n", slp->sl_xname, s);
2361 if ((error = scsi_low_init(slp, flags)) != 0)
2364 scsi_low_start(slp);
2368 /**************************************************************
2369 * disconnect and reselect
2370 **************************************************************/
2371 #define MSGCMD_LUN(msg) (msg & 0x07)
2373 static struct slccb *
2374 scsi_low_establish_ccb(struct targ_info *ti, struct lun_info *li, scsi_low_tag_t tag)
2376 struct scsi_low_softc *slp = ti->ti_sc;
2382 cb = TAILQ_FIRST(&li->li_discq);
2383 for ( ; cb != NULL; cb = TAILQ_NEXT(cb, ccb_chain))
2384 if (cb->ccb_tag == tag)
2389 * establish our ccb nexus
2392 #ifdef SCSI_LOW_DEBUG
2393 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id) != 0)
2395 printf("%s: nexus(0x%lx) abort check start\n",
2396 slp->sl_xname, (u_long) cb);
2397 cb->ccb_flags |= (CCB_NORETRY | CCB_SILENT);
2398 scsi_low_revoke_ccb(slp, cb, 1);
2402 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id) != 0)
2404 if (cb->ccb_omsgoutflag == 0)
2405 scsi_low_ccb_message_assert(cb, SCSI_LOW_MSG_NOOP);
2407 #endif /* SCSI_LOW_DEBUG */
2409 TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
2410 cb->ccb_flags &= ~CCB_DISCQ;
2411 slp->sl_Qnexus = cb;
2413 slp->sl_scp = cb->ccb_sscp;
2414 slp->sl_error |= cb->ccb_error;
2420 /* inform "ccb nexus established" to the host driver */
2421 (*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
2424 if (cb->ccb_msgoutflag != 0)
2426 scsi_low_ccb_message_exec(slp, cb);
2433 scsi_low_reselected(struct scsi_low_softc *slp, u_int targ)
2435 struct targ_info *ti;
2440 * Check select vs reselected collision.
2443 if ((cb = slp->sl_selid) != NULL)
2445 scsi_low_arbit_fail(slp, cb);
2446 #ifdef SCSI_LOW_STATICS
2447 scsi_low_statics.nexus_conflict ++;
2448 #endif /* SCSI_LOW_STATICS */
2452 * Check if no current active nexus.
2454 if (slp->sl_Tnexus != NULL)
2461 * Check a valid target id asserted ?
2463 if (targ >= slp->sl_ntargs || targ == slp->sl_hostid)
2465 s = "scsi id illegal";
2470 * Check the target scsi status.
2472 ti = slp->sl_ti[targ];
2473 if (ti->ti_phase != PH_DISC && ti->ti_phase != PH_NULL)
2475 s = "phase mismatch";
2483 scsi_low_init_msgsys(slp, ti);
2486 * Establish our target nexus
2488 SCSI_LOW_SETUP_PHASE(ti, PH_RESEL);
2489 slp->sl_Tnexus = ti;
2490 #ifdef SCSI_LOW_STATICS
2491 scsi_low_statics.nexus_reselected ++;
2492 #endif /* SCSI_LOW_STATICS */
2496 printf("%s: reselect(%x:unknown) %s\n", slp->sl_xname, targ, s);
2497 scsi_low_restart(slp, SCSI_LOW_RESTART_HARD,
2498 "reselect: scsi world confused");
2502 /**************************************************************
2503 * cmd out pointer setup
2504 **************************************************************/
2506 scsi_low_cmd(struct scsi_low_softc *slp, struct targ_info *ti)
2508 struct slccb *cb = slp->sl_Qnexus;
2510 slp->sl_ph_count ++;
2516 slp->sl_scp.scp_cmd = (u_int8_t *) &unit_ready_cmd;
2517 slp->sl_scp.scp_cmdlen = sizeof(unit_ready_cmd);
2518 slp->sl_scp.scp_datalen = 0;
2519 slp->sl_scp.scp_direction = SCSI_LOW_READ;
2520 slp->sl_error |= FATALIO;
2521 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2522 SCSI_LOW_INFO(slp, ti, "CMDOUT: ccb nexus not found");
2527 #ifdef SCSI_LOW_DEBUG
2528 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_CMDLNK_CHECK, ti->ti_id))
2530 scsi_low_test_cmdlnk(slp, cb);
2532 #endif /* SCSI_LOW_DEBUG */
2537 /**************************************************************
2538 * data out pointer setup
2539 **************************************************************/
2541 scsi_low_data(struct scsi_low_softc *slp, struct targ_info *ti,
2542 struct buf **bp, int direction)
2544 struct slccb *cb = slp->sl_Qnexus;
2546 if (cb != NULL && direction == cb->ccb_sscp.scp_direction)
2552 slp->sl_error |= (FATALIO | PDMAERR);
2553 slp->sl_scp.scp_datalen = 0;
2554 slp->sl_scp.scp_direction = direction;
2555 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2556 if (ti->ti_ophase != ti->ti_phase)
2561 s = "DATA PHASE: ccb nexus not found";
2563 s = "DATA PHASE: xfer direction mismatch";
2564 SCSI_LOW_INFO(slp, ti, s);
2571 /**************************************************************
2573 **************************************************************/
2574 #define MSGINPTR_CLR(ti) {(ti)->ti_msginptr = 0; (ti)->ti_msginlen = 0;}
2575 #define MSGIN_PERIOD(ti) ((ti)->ti_msgin[3])
2576 #define MSGIN_OFFSET(ti) ((ti)->ti_msgin[4])
2577 #define MSGIN_WIDTHP(ti) ((ti)->ti_msgin[3])
2578 #define MSGIN_DATA_LAST 0x30
2580 static int scsi_low_errfunc_synch (struct scsi_low_softc *, u_int);
2581 static int scsi_low_errfunc_wide (struct scsi_low_softc *, u_int);
2582 static int scsi_low_errfunc_identify (struct scsi_low_softc *, u_int);
2583 static int scsi_low_errfunc_qtag (struct scsi_low_softc *, u_int);
2585 static int scsi_low_msgfunc_synch (struct scsi_low_softc *);
2586 static int scsi_low_msgfunc_wide (struct scsi_low_softc *);
2587 static int scsi_low_msgfunc_identify (struct scsi_low_softc *);
2588 static int scsi_low_msgfunc_abort (struct scsi_low_softc *);
2589 static int scsi_low_msgfunc_qabort (struct scsi_low_softc *);
2590 static int scsi_low_msgfunc_qtag (struct scsi_low_softc *);
2591 static int scsi_low_msgfunc_reset (struct scsi_low_softc *);
2593 struct scsi_low_msgout_data {
2596 int (*md_msgfunc) (struct scsi_low_softc *);
2597 int (*md_errfunc) (struct scsi_low_softc *, u_int);
2598 #define MSG_RELEASE_ATN 0x0001
2602 struct scsi_low_msgout_data scsi_low_msgout_data[] = {
2603 /* 0 */ {SCSI_LOW_MSG_RESET, MSG_RESET, scsi_low_msgfunc_reset, NULL, MSG_RELEASE_ATN},
2604 /* 1 */ {SCSI_LOW_MSG_REJECT, MSG_REJECT, NULL, NULL, MSG_RELEASE_ATN},
2605 /* 2 */ {SCSI_LOW_MSG_PARITY, MSG_PARITY, NULL, NULL, MSG_RELEASE_ATN},
2606 /* 3 */ {SCSI_LOW_MSG_ERROR, MSG_I_ERROR, NULL, NULL, MSG_RELEASE_ATN},
2607 /* 4 */ {SCSI_LOW_MSG_IDENTIFY, MSG_IDENTIFY, scsi_low_msgfunc_identify, scsi_low_errfunc_identify, 0},
2608 /* 5 */ {SCSI_LOW_MSG_ABORT, MSG_ABORT, scsi_low_msgfunc_abort, NULL, MSG_RELEASE_ATN},
2609 /* 6 */ {SCSI_LOW_MSG_TERMIO, MSG_TERM_IO, NULL, NULL, MSG_RELEASE_ATN},
2610 /* 7 */ {SCSI_LOW_MSG_SIMPLE_QTAG, MSG_SIMPLE_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
2611 /* 8 */ {SCSI_LOW_MSG_ORDERED_QTAG, MSG_ORDERED_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
2612 /* 9 */{SCSI_LOW_MSG_HEAD_QTAG, MSG_HEAD_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
2613 /* 10 */ {SCSI_LOW_MSG_ABORT_QTAG, MSG_ABORT_QTAG, scsi_low_msgfunc_qabort, NULL, MSG_RELEASE_ATN},
2614 /* 11 */ {SCSI_LOW_MSG_CLEAR_QTAG, MSG_CLEAR_QTAG, scsi_low_msgfunc_abort, NULL, MSG_RELEASE_ATN},
2615 /* 12 */{SCSI_LOW_MSG_WIDE, MSG_EXTEND, scsi_low_msgfunc_wide, scsi_low_errfunc_wide, MSG_RELEASE_ATN},
2616 /* 13 */{SCSI_LOW_MSG_SYNCH, MSG_EXTEND, scsi_low_msgfunc_synch, scsi_low_errfunc_synch, MSG_RELEASE_ATN},
2617 /* 14 */{SCSI_LOW_MSG_NOOP, MSG_NOOP, NULL, NULL, MSG_RELEASE_ATN},
2618 /* 15 */{SCSI_LOW_MSG_ALL, 0},
2621 static int scsi_low_msginfunc_ext (struct scsi_low_softc *);
2622 static int scsi_low_synch (struct scsi_low_softc *);
2623 static int scsi_low_wide (struct scsi_low_softc *);
2624 static int scsi_low_msginfunc_msg_reject (struct scsi_low_softc *);
2625 static int scsi_low_msginfunc_rejop (struct scsi_low_softc *);
2626 static int scsi_low_msginfunc_rp (struct scsi_low_softc *);
2627 static int scsi_low_msginfunc_sdp (struct scsi_low_softc *);
2628 static int scsi_low_msginfunc_disc (struct scsi_low_softc *);
2629 static int scsi_low_msginfunc_cc (struct scsi_low_softc *);
2630 static int scsi_low_msginfunc_lcc (struct scsi_low_softc *);
2631 static int scsi_low_msginfunc_parity (struct scsi_low_softc *);
2632 static int scsi_low_msginfunc_noop (struct scsi_low_softc *);
2633 static int scsi_low_msginfunc_simple_qtag (struct scsi_low_softc *);
2634 static int scsi_low_msginfunc_i_wide_residue (struct scsi_low_softc *);
2636 struct scsi_low_msgin_data {
2638 int (*md_msgfunc) (struct scsi_low_softc *);
2641 struct scsi_low_msgin_data scsi_low_msgin_data[] = {
2642 /* 0 */ {1, scsi_low_msginfunc_cc},
2643 /* 1 */ {2, scsi_low_msginfunc_ext},
2644 /* 2 */ {1, scsi_low_msginfunc_sdp},
2645 /* 3 */ {1, scsi_low_msginfunc_rp},
2646 /* 4 */ {1, scsi_low_msginfunc_disc},
2647 /* 5 */ {1, scsi_low_msginfunc_rejop},
2648 /* 6 */ {1, scsi_low_msginfunc_rejop},
2649 /* 7 */ {1, scsi_low_msginfunc_msg_reject},
2650 /* 8 */ {1, scsi_low_msginfunc_noop},
2651 /* 9 */ {1, scsi_low_msginfunc_parity},
2652 /* a */ {1, scsi_low_msginfunc_lcc},
2653 /* b */ {1, scsi_low_msginfunc_lcc},
2654 /* c */ {1, scsi_low_msginfunc_rejop},
2655 /* d */ {2, scsi_low_msginfunc_rejop},
2656 /* e */ {1, scsi_low_msginfunc_rejop},
2657 /* f */ {1, scsi_low_msginfunc_rejop},
2658 /* 0x10 */ {1, scsi_low_msginfunc_rejop},
2659 /* 0x11 */ {1, scsi_low_msginfunc_rejop},
2660 /* 0x12 */ {1, scsi_low_msginfunc_rejop},
2661 /* 0x13 */ {1, scsi_low_msginfunc_rejop},
2662 /* 0x14 */ {1, scsi_low_msginfunc_rejop},
2663 /* 0x15 */ {1, scsi_low_msginfunc_rejop},
2664 /* 0x16 */ {1, scsi_low_msginfunc_rejop},
2665 /* 0x17 */ {1, scsi_low_msginfunc_rejop},
2666 /* 0x18 */ {1, scsi_low_msginfunc_rejop},
2667 /* 0x19 */ {1, scsi_low_msginfunc_rejop},
2668 /* 0x1a */ {1, scsi_low_msginfunc_rejop},
2669 /* 0x1b */ {1, scsi_low_msginfunc_rejop},
2670 /* 0x1c */ {1, scsi_low_msginfunc_rejop},
2671 /* 0x1d */ {1, scsi_low_msginfunc_rejop},
2672 /* 0x1e */ {1, scsi_low_msginfunc_rejop},
2673 /* 0x1f */ {1, scsi_low_msginfunc_rejop},
2674 /* 0x20 */ {2, scsi_low_msginfunc_simple_qtag},
2675 /* 0x21 */ {2, scsi_low_msginfunc_rejop},
2676 /* 0x22 */ {2, scsi_low_msginfunc_rejop},
2677 /* 0x23 */ {2, scsi_low_msginfunc_i_wide_residue},
2678 /* 0x24 */ {2, scsi_low_msginfunc_rejop},
2679 /* 0x25 */ {2, scsi_low_msginfunc_rejop},
2680 /* 0x26 */ {2, scsi_low_msginfunc_rejop},
2681 /* 0x27 */ {2, scsi_low_msginfunc_rejop},
2682 /* 0x28 */ {2, scsi_low_msginfunc_rejop},
2683 /* 0x29 */ {2, scsi_low_msginfunc_rejop},
2684 /* 0x2a */ {2, scsi_low_msginfunc_rejop},
2685 /* 0x2b */ {2, scsi_low_msginfunc_rejop},
2686 /* 0x2c */ {2, scsi_low_msginfunc_rejop},
2687 /* 0x2d */ {2, scsi_low_msginfunc_rejop},
2688 /* 0x2e */ {2, scsi_low_msginfunc_rejop},
2689 /* 0x2f */ {2, scsi_low_msginfunc_rejop},
2690 /* 0x30 */ {1, scsi_low_msginfunc_rejop} /* default rej op */
2693 /**************************************************************
2695 **************************************************************/
2697 scsi_low_msgfunc_synch(struct scsi_low_softc *slp)
2699 struct targ_info *ti = slp->sl_Tnexus;
2700 int ptr = ti->ti_msgoutlen;
2702 ti->ti_msgoutstr[ptr + 1] = MSG_EXTEND_SYNCHLEN;
2703 ti->ti_msgoutstr[ptr + 2] = MSG_EXTEND_SYNCHCODE;
2704 ti->ti_msgoutstr[ptr + 3] = ti->ti_maxsynch.period;
2705 ti->ti_msgoutstr[ptr + 4] = ti->ti_maxsynch.offset;
2706 return MSG_EXTEND_SYNCHLEN + 2;
2710 scsi_low_msgfunc_wide(struct scsi_low_softc *slp)
2712 struct targ_info *ti = slp->sl_Tnexus;
2713 int ptr = ti->ti_msgoutlen;
2715 ti->ti_msgoutstr[ptr + 1] = MSG_EXTEND_WIDELEN;
2716 ti->ti_msgoutstr[ptr + 2] = MSG_EXTEND_WIDECODE;
2717 ti->ti_msgoutstr[ptr + 3] = ti->ti_width;
2718 return MSG_EXTEND_WIDELEN + 2;
2722 scsi_low_msgfunc_identify(struct scsi_low_softc *slp)
2724 struct targ_info *ti = slp->sl_Tnexus;
2725 struct lun_info *li = slp->sl_Lnexus;
2726 struct slccb *cb = slp->sl_Qnexus;
2727 int ptr = ti->ti_msgoutlen;
2733 slp->sl_error |= FATALIO;
2734 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2735 SCSI_LOW_INFO(slp, ti, "MSGOUT: nexus unknown");
2739 if (scsi_low_is_disconnect_ok(cb) != 0)
2740 msg |= (MSG_IDENTIFY_DISCPRIV | li->li_lun);
2744 if (ti->ti_phase == PH_MSGOUT)
2746 (*slp->sl_funcs->scsi_low_establish_lun_nexus) (slp);
2747 if (cb->ccb_tag == SCSI_LOW_UNKTAG)
2749 (*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
2753 ti->ti_msgoutstr[ptr + 0] = msg;
2758 scsi_low_msgfunc_abort(struct scsi_low_softc *slp)
2760 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_ABORT);
2765 scsi_low_msgfunc_qabort(struct scsi_low_softc *slp)
2767 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_TERM);
2772 scsi_low_msgfunc_reset(struct scsi_low_softc *slp)
2774 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_RESET);
2779 scsi_low_msgfunc_qtag(struct scsi_low_softc *slp)
2781 struct targ_info *ti = slp->sl_Tnexus;
2782 struct slccb *cb = slp->sl_Qnexus;
2783 int ptr = ti->ti_msgoutlen;
2785 if (cb == NULL || cb->ccb_tag == SCSI_LOW_UNKTAG)
2787 ti->ti_msgoutstr[ptr + 0] = MSG_NOOP;
2792 ti->ti_msgoutstr[ptr + 1] = (u_int8_t) cb->ccb_tag;
2793 if (ti->ti_phase == PH_MSGOUT)
2795 (*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
2802 * The following functions are called when targets give unexpected
2803 * responces in msgin (after msgout).
2806 scsi_low_errfunc_identify(struct scsi_low_softc *slp, u_int msgflags)
2808 if (slp->sl_Lnexus != NULL)
2810 slp->sl_Lnexus->li_cfgflags &= ~SCSI_LOW_DISC;
2811 scsi_low_calcf_lun(slp->sl_Lnexus);
2817 scsi_low_errfunc_synch(struct scsi_low_softc *slp, u_int msgflags)
2819 struct targ_info *ti = slp->sl_Tnexus;
2821 MSGIN_PERIOD(ti) = 0;
2822 MSGIN_OFFSET(ti) = 0;
2823 scsi_low_synch(slp);
2828 scsi_low_errfunc_wide(struct scsi_low_softc *slp, u_int msgflags)
2830 struct targ_info *ti = slp->sl_Tnexus;
2832 MSGIN_WIDTHP(ti) = 0;
2838 scsi_low_errfunc_qtag(struct scsi_low_softc *slp, u_int msgflags)
2840 if ((msgflags & SCSI_LOW_MSG_REJECT) != 0)
2842 if (slp->sl_Qnexus != NULL)
2844 scsi_low_deactivate_qtag(slp->sl_Qnexus);
2846 if (slp->sl_Lnexus != NULL)
2848 slp->sl_Lnexus->li_cfgflags &= ~SCSI_LOW_QTAG;
2849 scsi_low_calcf_lun(slp->sl_Lnexus);
2851 printf("%s: scsi_low: qtag msg rejected\n", slp->sl_xname);
2858 scsi_low_msgout(struct scsi_low_softc *slp, struct targ_info *ti, u_int fl)
2860 struct scsi_low_msgout_data *mdp;
2863 #ifdef SCSI_LOW_DIAGNOSTIC
2864 if (ti != slp->sl_Tnexus)
2866 scsi_low_print(slp, NULL);
2867 panic("scsi_low_msgout: Target nexus inconsistent");
2869 #endif /* SCSI_LOW_DIAGNOSTIC */
2871 slp->sl_ph_count ++;
2872 if (slp->sl_ph_count > SCSI_LOW_MAX_PHCHANGES)
2874 printf("%s: too many phase changes\n", slp->sl_xname);
2875 slp->sl_error |= FATALIO;
2876 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2880 * Scsi phase changes.
2881 * Previously msgs asserted are accepted by our target or
2882 * processed by scsi_low_msgin.
2883 * Thus clear all saved informations.
2885 if ((fl & SCSI_LOW_MSGOUT_INIT) != 0)
2887 ti->ti_omsgflags = 0;
2888 ti->ti_emsgflags = 0;
2890 else if (slp->sl_atten == 0)
2893 * We did not assert attention, however still our target required
2894 * msgs. Resend previous msgs.
2896 ti->ti_msgflags |= ti->ti_omsgflags;
2897 ti->ti_omsgflags = 0;
2898 #ifdef SCSI_LOW_DIAGNOSTIC
2899 printf("%s: scsi_low_msgout: retry msgout\n", slp->sl_xname);
2900 #endif /* SCSI_LOW_DIAGNOSTIC */
2904 * We have no msgs. send MSG_NOOP (OK?)
2906 if (scsi_low_is_msgout_continue(ti, 0) == 0)
2907 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_NOOP, 0);
2912 ti->ti_msgoutlen = 0;
2913 slp->sl_clear_atten = 0;
2914 mdp = &scsi_low_msgout_data[0];
2915 for ( ; mdp->md_flags != SCSI_LOW_MSG_ALL; mdp ++)
2917 if ((ti->ti_msgflags & mdp->md_flags) != 0)
2919 ti->ti_omsgflags |= mdp->md_flags;
2920 ti->ti_msgflags &= ~mdp->md_flags;
2921 ti->ti_emsgflags = mdp->md_flags;
2923 ti->ti_msgoutstr[ti->ti_msgoutlen] = mdp->md_msg;
2924 if (mdp->md_msgfunc != NULL)
2925 len = (*mdp->md_msgfunc) (slp);
2929 #ifdef SCSI_LOW_DIAGNOSTIC
2930 scsi_low_msg_log_write(&ti->ti_log_msgout,
2931 &ti->ti_msgoutstr[ti->ti_msgoutlen], len);
2932 #endif /* SCSI_LOW_DIAGNOSTIC */
2934 ti->ti_msgoutlen += len;
2935 if ((mdp->md_condition & MSG_RELEASE_ATN) != 0)
2937 slp->sl_clear_atten = 1;
2941 if ((fl & SCSI_LOW_MSGOUT_UNIFY) == 0 ||
2942 ti->ti_msgflags == 0)
2945 if (ti->ti_msgoutlen >= SCSI_LOW_MAX_MSGLEN - 5)
2950 if (scsi_low_is_msgout_continue(ti, 0) == 0)
2951 slp->sl_clear_atten = 1;
2953 return ti->ti_msgoutlen;
2956 /**************************************************************
2958 **************************************************************/
2960 scsi_low_msginfunc_noop(struct scsi_low_softc *slp)
2966 scsi_low_msginfunc_rejop(struct scsi_low_softc *slp)
2968 struct targ_info *ti = slp->sl_Tnexus;
2969 u_int8_t msg = ti->ti_msgin[0];
2971 printf("%s: MSGIN: msg 0x%x rejected\n", slp->sl_xname, (u_int) msg);
2972 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
2977 scsi_low_msginfunc_cc(struct scsi_low_softc *slp)
2979 struct lun_info *li;
2981 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_CMDC);
2983 /* validate status */
2984 if (slp->sl_Qnexus == NULL)
2987 slp->sl_Qnexus->ccb_sscp.scp_status = slp->sl_scp.scp_status;
2988 li = slp->sl_Lnexus;
2989 switch (slp->sl_scp.scp_status)
2992 li->li_maxnqio = li->li_maxnexus;
2997 if (li->li_qflags & SCSI_LOW_QFLAG_CA_QCLEAR)
2998 scsi_low_reset_nexus_lun(slp, li, 0);
3006 if (li->li_maxnexus >= li->li_nqio)
3007 li->li_maxnexus = li->li_nqio - 1;
3008 li->li_maxnqio = li->li_maxnexus;
3013 slp->sl_error |= MSGERR;
3023 scsi_low_msginfunc_lcc(struct scsi_low_softc *slp)
3025 struct targ_info *ti;
3026 struct lun_info *li;
3027 struct slccb *ncb, *cb;
3029 ti = slp->sl_Tnexus;
3030 li = slp->sl_Lnexus;
3031 if ((cb = slp->sl_Qnexus) == NULL)
3034 cb->ccb_sscp.scp_status = slp->sl_scp.scp_status;
3035 switch (slp->sl_scp.scp_status)
3039 li->li_maxnqio = li->li_maxnexus;
3043 slp->sl_error |= MSGERR;
3047 if ((li->li_flags & SCSI_LOW_LINK) == 0)
3050 cb->ccb_error |= slp->sl_error;
3051 if (cb->ccb_error != 0)
3054 for (ncb = TAILQ_FIRST(&slp->sl_start); ncb != NULL;
3055 ncb = TAILQ_NEXT(ncb, ccb_chain))
3058 goto cmd_link_start;
3063 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_LCTERM);
3064 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3068 ncb->ccb_flags &= ~CCB_STARTQ;
3069 TAILQ_REMOVE(&slp->sl_start, ncb, ccb_chain);
3071 scsi_low_dealloc_qtag(ncb);
3072 ncb->ccb_tag = cb->ccb_tag;
3073 ncb->ccb_otag = cb->ccb_otag;
3074 cb->ccb_tag = SCSI_LOW_UNKTAG;
3075 cb->ccb_otag = SCSI_LOW_UNKTAG;
3076 if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
3077 panic("%s: linked ccb retried", slp->sl_xname);
3079 slp->sl_Qnexus = ncb;
3080 slp->sl_ph_count = 0;
3083 ncb->ccb_datalen = -1;
3084 ncb->ccb_scp.scp_status = ST_UNKNOWN;
3085 ncb->ccb_flags &= ~CCB_INTERNAL;
3087 scsi_low_init_msgsys(slp, ti);
3089 (*slp->sl_osdep_fp->scsi_low_osdep_ccb_setup) (slp, ncb);
3091 if (ncb->ccb_tcmax < SCSI_LOW_MIN_TOUT)
3092 ncb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
3093 ncb->ccb_tc = ncb->ccb_tcmax;
3095 /* setup saved scsi data pointer */
3096 ncb->ccb_sscp = ncb->ccb_scp;
3097 slp->sl_scp = ncb->ccb_sscp;
3098 slp->sl_error = ncb->ccb_error;
3100 #ifdef SCSI_LOW_DIAGNOSTIC
3101 scsi_low_msg_log_init(&ti->ti_log_msgin);
3102 scsi_low_msg_log_init(&ti->ti_log_msgout);
3103 #endif /* SCSI_LOW_DIAGNOSTIC */
3108 scsi_low_msginfunc_disc(struct scsi_low_softc *slp)
3110 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_DISC);
3115 scsi_low_msginfunc_sdp(struct scsi_low_softc *slp)
3117 struct slccb *cb = slp->sl_Qnexus;
3121 cb->ccb_sscp.scp_datalen = slp->sl_scp.scp_datalen;
3122 cb->ccb_sscp.scp_data = slp->sl_scp.scp_data;
3125 scsi_low_assert_msg(slp, slp->sl_Tnexus, SCSI_LOW_MSG_REJECT, 0);
3130 scsi_low_msginfunc_rp(struct scsi_low_softc *slp)
3132 if (slp->sl_Qnexus != NULL)
3133 slp->sl_scp = slp->sl_Qnexus->ccb_sscp;
3135 scsi_low_assert_msg(slp, slp->sl_Tnexus, SCSI_LOW_MSG_REJECT, 0);
3140 scsi_low_synch(struct scsi_low_softc *slp)
3142 struct targ_info *ti = slp->sl_Tnexus;
3143 u_int period = 0, offset = 0, speed;
3147 if ((MSGIN_PERIOD(ti) >= ti->ti_maxsynch.period &&
3148 MSGIN_OFFSET(ti) <= ti->ti_maxsynch.offset) ||
3149 MSGIN_OFFSET(ti) == 0)
3151 if ((offset = MSGIN_OFFSET(ti)) != 0)
3152 period = MSGIN_PERIOD(ti);
3153 s = offset ? "synchronous" : "async";
3158 * Target seems to be brain damaged.
3159 * Force async transfer.
3161 ti->ti_maxsynch.period = 0;
3162 ti->ti_maxsynch.offset = 0;
3163 printf("%s: target brain damaged. async transfer\n",
3168 ti->ti_maxsynch.period = period;
3169 ti->ti_maxsynch.offset = offset;
3171 error = (*slp->sl_funcs->scsi_low_msg) (slp, ti, SCSI_LOW_MSG_SYNCH);
3175 * Current period and offset are not acceptable
3177 * The adapter changes max synch and max offset.
3179 printf("%s: synch neg failed. retry synch msg neg ...\n",
3184 ti->ti_osynch = ti->ti_maxsynch;
3187 ti->ti_setup_msg_done |= SCSI_LOW_MSG_SYNCH;
3191 if ((slp->sl_show_result & SHOW_SYNCH_NEG) != 0)
3193 #ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
3194 struct slccb *cb = slp->sl_Qnexus;
3196 if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
3198 #endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
3200 printf("%s(%d:*): <%s> offset %d period %dns ",
3201 slp->sl_xname, ti->ti_id, s, offset, period * 4);
3205 speed = 1000 * 10 / (period * 4);
3206 printf("%d.%d M/s", speed / 10, speed % 10);
3214 scsi_low_wide(struct scsi_low_softc *slp)
3216 struct targ_info *ti = slp->sl_Tnexus;
3219 ti->ti_width = MSGIN_WIDTHP(ti);
3220 error = (*slp->sl_funcs->scsi_low_msg) (slp, ti, SCSI_LOW_MSG_WIDE);
3224 * Current width is not acceptable for our adapter.
3225 * The adapter changes max width.
3227 printf("%s: wide neg failed. retry wide msg neg ...\n",
3232 ti->ti_owidth = ti->ti_width;
3233 if (ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
3235 ti->ti_setup_msg_done |=
3236 (SCSI_LOW_MSG_SYNCH | SCSI_LOW_MSG_WIDE);
3240 if ((slp->sl_show_result & SHOW_WIDE_NEG) != 0)
3242 #ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
3243 struct slccb *cb = slp->sl_Qnexus;
3245 if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
3247 #endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
3249 printf("%s(%d:*): transfer width %d bits\n",
3250 slp->sl_xname, ti->ti_id, 1 << (3 + ti->ti_width));
3256 scsi_low_msginfunc_simple_qtag(struct scsi_low_softc *slp)
3258 struct targ_info *ti = slp->sl_Tnexus;
3259 scsi_low_tag_t etag = (scsi_low_tag_t) ti->ti_msgin[1];
3261 if (slp->sl_Qnexus != NULL)
3263 if (slp->sl_Qnexus->ccb_tag != etag)
3265 slp->sl_error |= FATALIO;
3266 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
3267 SCSI_LOW_INFO(slp, ti, "MSGIN: qtag mismatch");
3270 else if (scsi_low_establish_ccb(ti, slp->sl_Lnexus, etag) == NULL)
3272 #ifdef SCSI_LOW_DEBUG
3273 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id))
3275 #endif /* SCSI_LOW_DEBUG */
3277 slp->sl_error |= FATALIO;
3278 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT_QTAG, 0);
3279 SCSI_LOW_INFO(slp, ti, "MSGIN: taged ccb not found");
3285 scsi_low_msginfunc_i_wide_residue(struct scsi_low_softc *slp)
3287 struct targ_info *ti = slp->sl_Tnexus;
3288 struct slccb *cb = slp->sl_Qnexus;
3289 int res = (int) ti->ti_msgin[1];
3291 if (cb == NULL || res <= 0 ||
3292 (ti->ti_width == SCSI_LOW_BUS_WIDTH_16 && res > 1) ||
3293 (ti->ti_width == SCSI_LOW_BUS_WIDTH_32 && res > 3))
3296 if (slp->sl_scp.scp_datalen + res > cb->ccb_scp.scp_datalen)
3299 slp->sl_scp.scp_datalen += res;
3300 slp->sl_scp.scp_data -= res;
3301 scsi_low_data_finish(slp);
3306 scsi_low_msginfunc_ext(struct scsi_low_softc *slp)
3308 struct slccb *cb = slp->sl_Qnexus;
3309 struct lun_info *li = slp->sl_Lnexus;
3310 struct targ_info *ti = slp->sl_Tnexus;
3314 if (ti->ti_msginptr == 2)
3316 ti->ti_msginlen = ti->ti_msgin[1] + 2;
3320 switch (MKMSG_EXTEND(ti->ti_msgin[1], ti->ti_msgin[2]))
3322 case MKMSG_EXTEND(MSG_EXTEND_MDPLEN, MSG_EXTEND_MDPCODE):
3326 ptr = (u_int32_t *)(&ti->ti_msgin[3]);
3327 count = (int) htonl((long) (*ptr));
3328 if(slp->sl_scp.scp_datalen - count < 0 ||
3329 slp->sl_scp.scp_datalen - count > cb->ccb_scp.scp_datalen)
3332 slp->sl_scp.scp_datalen -= count;
3333 slp->sl_scp.scp_data += count;
3336 case MKMSG_EXTEND(MSG_EXTEND_SYNCHLEN, MSG_EXTEND_SYNCHCODE):
3340 retry = scsi_low_synch(slp);
3341 if (retry != 0 || (ti->ti_emsgflags & SCSI_LOW_MSG_SYNCH) == 0)
3342 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_SYNCH, 0);
3344 #ifdef SCSI_LOW_DEBUG
3345 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id))
3347 scsi_low_test_atten(slp, ti, SCSI_LOW_MSG_SYNCH);
3349 #endif /* SCSI_LOW_DEBUG */
3352 case MKMSG_EXTEND(MSG_EXTEND_WIDELEN, MSG_EXTEND_WIDECODE):
3356 retry = scsi_low_wide(slp);
3357 if (retry != 0 || (ti->ti_emsgflags & SCSI_LOW_MSG_WIDE) == 0)
3358 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_WIDE, 0);
3366 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3371 scsi_low_msginfunc_parity(struct scsi_low_softc *slp)
3373 struct targ_info *ti = slp->sl_Tnexus;
3375 /* only I -> T, invalid! */
3376 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3381 scsi_low_msginfunc_msg_reject(struct scsi_low_softc *slp)
3383 struct targ_info *ti = slp->sl_Tnexus;
3384 struct scsi_low_msgout_data *mdp;
3387 if (ti->ti_emsgflags != 0)
3389 printf("%s: msg flags [0x%x] rejected\n",
3390 slp->sl_xname, ti->ti_emsgflags);
3391 msgflags = SCSI_LOW_MSG_REJECT;
3392 mdp = &scsi_low_msgout_data[0];
3393 for ( ; mdp->md_flags != SCSI_LOW_MSG_ALL; mdp ++)
3395 if ((ti->ti_emsgflags & mdp->md_flags) != 0)
3397 ti->ti_emsgflags &= ~mdp->md_flags;
3398 if (mdp->md_errfunc != NULL)
3399 (*mdp->md_errfunc) (slp, msgflags);
3407 SCSI_LOW_INFO(slp, ti, "MSGIN: rejected msg not found");
3408 slp->sl_error |= MSGERR;
3414 scsi_low_msgin(struct scsi_low_softc *slp, struct targ_info *ti, u_int c)
3416 struct scsi_low_msgin_data *sdp;
3417 struct lun_info *li;
3420 #ifdef SCSI_LOW_DIAGNOSTIC
3421 if (ti != slp->sl_Tnexus)
3423 scsi_low_print(slp, NULL);
3424 panic("scsi_low_msgin: Target nexus inconsistent");
3426 #endif /* SCSI_LOW_DIAGNOSTIC */
3429 * Phase changes, clear the pointer.
3431 if (ti->ti_ophase != ti->ti_phase)
3434 ti->ti_msgin_parity_error = 0;
3436 slp->sl_ph_count ++;
3437 if (slp->sl_ph_count > SCSI_LOW_MAX_PHCHANGES)
3439 printf("%s: too many phase changes\n", slp->sl_xname);
3440 slp->sl_error |= FATALIO;
3441 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
3446 * Store a current messages byte into buffer and
3447 * wait for the completion of the current msg.
3449 ti->ti_msgin[ti->ti_msginptr ++] = (u_int8_t) c;
3450 if (ti->ti_msginptr >= SCSI_LOW_MAX_MSGLEN)
3452 ti->ti_msginptr = SCSI_LOW_MAX_MSGLEN - 1;
3453 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3457 * Check parity errors.
3459 if ((c & SCSI_LOW_DATA_PE) != 0)
3461 ti->ti_msgin_parity_error ++;
3462 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_PARITY, 0);
3466 if (ti->ti_msgin_parity_error != 0)
3470 * Calculate messages length.
3472 msg = ti->ti_msgin[0];
3473 if (msg < MSGIN_DATA_LAST)
3474 sdp = &scsi_low_msgin_data[msg];
3476 sdp = &scsi_low_msgin_data[MSGIN_DATA_LAST];
3478 if (ti->ti_msginlen == 0)
3480 ti->ti_msginlen = sdp->md_len;
3486 if (ti->ti_msginptr < ti->ti_msginlen)
3492 if ((msg & MSG_IDENTIFY) == 0)
3494 if (((*sdp->md_msgfunc) (slp)) == EJUSTRETURN)
3499 li = slp->sl_Lnexus;
3502 li = scsi_low_alloc_li(ti, MSGCMD_LUN(msg), 0);
3505 slp->sl_Lnexus = li;
3506 (*slp->sl_funcs->scsi_low_establish_lun_nexus) (slp);
3510 if (MSGCMD_LUN(msg) != li->li_lun)
3514 if (slp->sl_Qnexus == NULL && li->li_nqio == 0)
3516 if (!scsi_low_establish_ccb(ti, li, SCSI_LOW_UNKTAG))
3518 #ifdef SCSI_LOW_DEBUG
3519 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id) != 0)
3523 #endif /* SCSI_LOW_DEBUG */
3531 * Msg process completed, reset msgin pointer and assert ATN if desired.
3534 slp->sl_error |= FATALIO;
3535 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
3536 SCSI_LOW_INFO(slp, ti, "MSGIN: identify wrong");
3539 if (ti->ti_msginptr < ti->ti_msginlen)
3542 #ifdef SCSI_LOW_DIAGNOSTIC
3543 scsi_low_msg_log_write(&ti->ti_log_msgin,
3544 &ti->ti_msgin[0], ti->ti_msginlen);
3545 #endif /* SCSI_LOW_DIAGNOSTIC */
3551 /**********************************************************
3553 **********************************************************/
3555 scsi_low_disconnected(struct scsi_low_softc *slp, struct targ_info *ti)
3557 struct slccb *cb = slp->sl_Qnexus;
3559 /* check phase completion */
3560 switch (slp->sl_msgphase)
3563 scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
3564 scsi_low_msginfunc_cc(slp);
3565 scsi_low_reset_nexus_target(slp, slp->sl_Tnexus, 0);
3569 scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
3570 scsi_low_msginfunc_cc(slp);
3571 scsi_low_reset_nexus_lun(slp, slp->sl_Lnexus, 0);
3575 scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
3576 scsi_low_msginfunc_cc(slp);
3582 struct lun_info *li;
3585 TAILQ_INSERT_TAIL(&li->li_discq, cb, ccb_chain);
3586 cb->ccb_flags |= CCB_DISCQ;
3587 cb->ccb_error |= slp->sl_error;
3593 #ifdef SCSI_LOW_STATICS
3594 scsi_low_statics.nexus_disconnected ++;
3595 #endif /* SCSI_LOW_STATICS */
3597 #ifdef SCSI_LOW_DEBUG
3598 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DISC, ti->ti_id) != 0)
3600 printf("## SCSI_LOW_DISCONNECTED ===============\n");
3601 scsi_low_print(slp, NULL);
3603 #endif /* SCSI_LOW_DEBUG */
3607 slp->sl_error |= FATALIO;
3608 if (ti->ti_phase == PH_SELSTART)
3609 slp->sl_error |= SELTIMEOUTIO;
3611 slp->sl_error |= UBFERR;
3620 #ifdef SCSI_LOW_DEBUG
3621 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id))
3623 if (cb->ccb_omsgoutflag == SCSI_LOW_MSG_NOOP &&
3624 (cb->ccb_msgoutflag != 0 ||
3625 (ti->ti_msgflags & SCSI_LOW_MSG_NOOP)))
3627 scsi_low_info(slp, ti, "ATTEN CHECK FAILED");
3630 #endif /* SCSI_LOW_DEBUG */
3632 cb->ccb_error |= slp->sl_error;
3633 if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
3635 cb->ccb_flags |= CCB_STARTQ;
3636 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
3641 scsi_low_bus_release(slp, ti);
3642 scsi_low_start(slp);
3646 /**********************************************************
3648 **********************************************************/
3650 scsi_low_alloc_qtag(struct slccb *cb)
3652 struct lun_info *li = cb->li;
3653 scsi_low_tag_t etag;
3655 if (cb->ccb_otag != SCSI_LOW_UNKTAG)
3658 #ifndef SCSI_LOW_ALT_QTAG_ALLOCATE
3659 etag = ffs(li->li_qtagbits);
3663 li->li_qtagbits &= ~(1 << (etag - 1));
3664 cb->ccb_otag = etag;
3667 #else /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3668 for (etag = li->li_qd ; li->li_qd < SCSI_LOW_MAXNEXUS; li->li_qd ++)
3669 if (li->li_qtagarray[li->li_qd] == 0)
3672 for (li->li_qd = 0; li->li_qd < etag; li->li_qd ++)
3673 if (li->li_qtagarray[li->li_qd] == 0)
3679 li->li_qtagarray[li->li_qd] ++;
3680 cb->ccb_otag = (li->li_qd ++);
3682 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3686 scsi_low_dealloc_qtag(struct slccb *cb)
3688 struct lun_info *li = cb->li;
3689 scsi_low_tag_t etag;
3691 if (cb->ccb_otag == SCSI_LOW_UNKTAG)
3694 #ifndef SCSI_LOW_ALT_QTAG_ALLOCATE
3695 etag = cb->ccb_otag - 1;
3696 #ifdef SCSI_LOW_DIAGNOSTIC
3697 if (etag >= sizeof(li->li_qtagbits) * NBBY)
3698 panic("scsi_low_dealloc_tag: illegal tag");
3699 #endif /* SCSI_LOW_DIAGNOSTIC */
3700 li->li_qtagbits |= (1 << etag);
3702 #else /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3703 etag = cb->ccb_otag;
3704 #ifdef SCSI_LOW_DIAGNOSTIC
3705 if (etag >= SCSI_LOW_MAXNEXUS)
3706 panic("scsi_low_dealloc_tag: illegal tag");
3707 #endif /* SCSI_LOW_DIAGNOSTIC */
3708 li->li_qtagarray[etag] --;
3709 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3711 cb->ccb_otag = SCSI_LOW_UNKTAG;
3716 scsi_low_revoke_ccb(struct scsi_low_softc *slp, struct slccb *cb, int fdone)
3718 struct targ_info *ti = cb->ti;
3719 struct lun_info *li = cb->li;
3721 #ifdef SCSI_LOW_DIAGNOSTIC
3722 if ((cb->ccb_flags & (CCB_STARTQ | CCB_DISCQ)) ==
3723 (CCB_STARTQ | CCB_DISCQ))
3725 panic("%s: ccb in both queue", slp->sl_xname);
3727 #endif /* SCSI_LOW_DIAGNOSTIC */
3729 if ((cb->ccb_flags & CCB_STARTQ) != 0)
3731 TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
3734 if ((cb->ccb_flags & CCB_DISCQ) != 0)
3736 TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
3742 cb->ccb_flags &= ~(CCB_STARTQ | CCB_DISCQ |
3743 CCB_SENSE | CCB_CLEARQ | CCB_INTERNAL);
3746 (cb->ccb_rcnt ++ >= slp->sl_max_retry ||
3747 (cb->ccb_flags & CCB_NORETRY) != 0))
3749 cb->ccb_error |= FATALIO;
3750 cb->ccb_flags &= ~CCB_AUTOSENSE;
3751 if (scsi_low_done(slp, cb) != SCSI_LOW_DONE_COMPLETE)
3752 panic("%s: done ccb retried", slp->sl_xname);
3757 cb->ccb_error |= PENDINGIO;
3758 scsi_low_deactivate_qtag(cb);
3759 scsi_low_ccb_message_retry(cb);
3760 cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
3766 scsi_low_reset_nexus_lun(struct scsi_low_softc *slp, struct lun_info *li, int fdone)
3768 struct slccb *cb, *ncb, *ecb;
3774 for (cb = TAILQ_FIRST(&li->li_discq); cb != NULL; cb = ncb)
3776 ncb = TAILQ_NEXT(cb, ccb_chain);
3777 cb = scsi_low_revoke_ccb(slp, cb, fdone);
3781 * presumely keep ordering of io
3783 cb->ccb_flags |= CCB_STARTQ;
3786 TAILQ_INSERT_HEAD(&slp->sl_start,\
3791 TAILQ_INSERT_AFTER(&slp->sl_start,\
3792 ecb, cb, ccb_chain);
3799 /**************************************************************
3801 **************************************************************/
3803 scsi_low_calcf_lun(struct lun_info *li)
3805 struct targ_info *ti = li->li_ti;
3806 struct scsi_low_softc *slp = ti->ti_sc;
3807 u_int cfgflags, diskflags;
3809 if (li->li_flags_valid == SCSI_LOW_LUN_FLAGS_ALL_VALID)
3810 cfgflags = li->li_cfgflags;
3814 diskflags = li->li_diskflags & li->li_quirks;
3817 li->li_flags &= ~SCSI_LOW_DISC;
3818 if ((slp->sl_cfgflags & CFG_NODISC) == 0 &&
3819 (diskflags & SCSI_LOW_DISK_DISC) != 0 &&
3820 (cfgflags & SCSI_LOW_DISC) != 0)
3821 li->li_flags |= SCSI_LOW_DISC;
3824 li->li_flags |= SCSI_LOW_NOPARITY;
3825 if ((slp->sl_cfgflags & CFG_NOPARITY) == 0 &&
3826 (diskflags & SCSI_LOW_DISK_PARITY) != 0 &&
3827 (cfgflags & SCSI_LOW_NOPARITY) == 0)
3828 li->li_flags &= ~SCSI_LOW_NOPARITY;
3831 if ((slp->sl_cfgflags & CFG_NOQTAG) == 0 &&
3832 (cfgflags & SCSI_LOW_QTAG) != 0 &&
3833 (diskflags & SCSI_LOW_DISK_QTAG) != 0)
3835 li->li_flags |= SCSI_LOW_QTAG;
3836 li->li_maxnexus = SCSI_LOW_MAXNEXUS;
3837 li->li_maxnqio = li->li_maxnexus;
3841 li->li_flags &= ~SCSI_LOW_QTAG;
3842 li->li_maxnexus = 0;
3843 li->li_maxnqio = li->li_maxnexus;
3847 li->li_flags &= ~SCSI_LOW_LINK;
3848 if ((cfgflags & SCSI_LOW_LINK) != 0 &&
3849 (diskflags & SCSI_LOW_DISK_LINK) != 0)
3850 li->li_flags |= SCSI_LOW_LINK;
3852 /* compatible flags */
3853 li->li_flags &= ~SCSI_LOW_SYNC;
3854 if (ti->ti_maxsynch.offset > 0)
3855 li->li_flags |= SCSI_LOW_SYNC;
3857 #ifdef SCSI_LOW_DEBUG
3858 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_CALCF, ti->ti_id) != 0)
3860 scsi_low_calcf_show(li);
3862 #endif /* SCSI_LOW_DEBUG */
3866 scsi_low_calcf_target(struct targ_info *ti)
3868 struct scsi_low_softc *slp = ti->ti_sc;
3869 u_int offset, period, diskflags;
3871 diskflags = ti->ti_diskflags & ti->ti_quirks;
3874 if ((slp->sl_cfgflags & CFG_ASYNC) == 0 &&
3875 (diskflags & SCSI_LOW_DISK_SYNC) != 0)
3877 offset = ti->ti_maxsynch.offset;
3878 period = ti->ti_maxsynch.period;
3879 if (offset == 0 || period == 0)
3880 offset = period = 0;
3884 offset = period = 0;
3887 ti->ti_maxsynch.offset = offset;
3888 ti->ti_maxsynch.period = period;
3891 if ((diskflags & SCSI_LOW_DISK_WIDE_32) == 0 &&
3892 ti->ti_width > SCSI_LOW_BUS_WIDTH_16)
3893 ti->ti_width = SCSI_LOW_BUS_WIDTH_16;
3895 if ((diskflags & SCSI_LOW_DISK_WIDE_16) == 0 &&
3896 ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
3897 ti->ti_width = SCSI_LOW_BUS_WIDTH_8;
3899 if (ti->ti_flags_valid == SCSI_LOW_TARG_FLAGS_ALL_VALID)
3901 if (ti->ti_maxsynch.offset != ti->ti_osynch.offset ||
3902 ti->ti_maxsynch.period != ti->ti_osynch.period)
3903 ti->ti_setup_msg |= SCSI_LOW_MSG_SYNCH;
3904 if (ti->ti_width != ti->ti_owidth)
3905 ti->ti_setup_msg |= (SCSI_LOW_MSG_WIDE | SCSI_LOW_MSG_SYNCH);
3907 ti->ti_osynch = ti->ti_maxsynch;
3908 ti->ti_owidth = ti->ti_width;
3911 #ifdef SCSI_LOW_DEBUG
3912 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_CALCF, ti->ti_id) != 0)
3914 printf("%s(%d:*): max period(%dns) offset(%d) width(%d)\n",
3915 slp->sl_xname, ti->ti_id,
3916 ti->ti_maxsynch.period * 4,
3917 ti->ti_maxsynch.offset,
3920 #endif /* SCSI_LOW_DEBUG */
3924 scsi_low_calcf_show(struct lun_info *li)
3926 struct targ_info *ti = li->li_ti;
3927 struct scsi_low_softc *slp = ti->ti_sc;
3929 printf("%s(%d:%d): period(%d ns) offset(%d) width(%d) flags 0x%b\n",
3930 slp->sl_xname, ti->ti_id, li->li_lun,
3931 ti->ti_maxsynch.period * 4,
3932 ti->ti_maxsynch.offset,
3934 li->li_flags, SCSI_LOW_BITS);
3937 #ifdef SCSI_LOW_START_UP_CHECK
3938 /**************************************************************
3939 * scsi world start up
3940 **************************************************************/
3941 static int scsi_low_poll (struct scsi_low_softc *, struct slccb *);
3944 scsi_low_start_up(struct scsi_low_softc *slp)
3946 struct targ_info *ti;
3947 struct lun_info *li;
3951 printf("%s: scsi_low: probing all devices ....\n", slp->sl_xname);
3953 for (target = 0; target < slp->sl_ntargs; target ++)
3955 if (target == slp->sl_hostid)
3957 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
3959 printf("%s: scsi_low: target %d (host card)\n",
3960 slp->sl_xname, target);
3965 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
3967 printf("%s: scsi_low: target %d lun ",
3968 slp->sl_xname, target);
3971 ti = slp->sl_ti[target];
3972 for (lun = 0; lun < slp->sl_nluns; lun ++)
3974 if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
3980 li = scsi_low_alloc_li(ti, lun, 1);
3982 scsi_low_enqueue(slp, ti, li, cb,
3983 CCB_AUTOSENSE | CCB_POLLED, 0);
3985 scsi_low_poll(slp, cb);
3987 if (li->li_state != SCSI_LOW_LUN_OK)
3990 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
3996 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
4005 scsi_low_poll(struct scsi_low_softc *slp, struct slccb *cb)
4010 while (slp->sl_nio > 0)
4012 SCSI_LOW_DELAY((1000 * 1000) / SCSI_LOW_POLL_HZ);
4014 (*slp->sl_funcs->scsi_low_poll) (slp);
4015 if (tcount ++ < SCSI_LOW_POLL_HZ / SCSI_LOW_TIMEOUT_HZ)
4019 scsi_low_timeout_check(slp);
4024 #endif /* SCSI_LOW_START_UP_CHECK */
4026 /**********************************************************
4028 **********************************************************/
4029 #ifdef SCSI_LOW_DEBUG
4031 scsi_low_test_abort(struct scsi_low_softc *slp, struct targ_info *ti,
4032 struct lun_info *li)
4036 if (li->li_disc > 1)
4038 acb = TAILQ_FIRST(&li->li_discq);
4039 if (scsi_low_abort_ccb(slp, acb) == 0)
4041 printf("%s: aborting ccb(0x%lx) start\n",
4042 slp->sl_xname, (u_long) acb);
4048 scsi_low_test_atten(struct scsi_low_softc *slp, struct targ_info *ti, u_int msg)
4050 if (slp->sl_ph_count < SCSI_LOW_MAX_ATTEN_CHECK)
4051 scsi_low_assert_msg(slp, ti, msg, 0);
4053 printf("%s: atten check OK\n", slp->sl_xname);
4057 scsi_low_test_cmdlnk(struct scsi_low_softc *slp, struct slccb *cb)
4059 #define SCSI_LOW_CMDLNK_NOK (CCB_INTERNAL | CCB_SENSE | CCB_CLEARQ)
4061 if ((cb->ccb_flags & SCSI_LOW_CMDLNK_NOK) != 0)
4064 memcpy(cb->ccb_scsi_cmd, slp->sl_scp.scp_cmd,
4065 slp->sl_scp.scp_cmdlen);
4066 cb->ccb_scsi_cmd[slp->sl_scp.scp_cmdlen - 1] |= 1;
4067 slp->sl_scp.scp_cmd = cb->ccb_scsi_cmd;
4069 #endif /* SCSI_LOW_DEBUG */
4072 scsi_low_info(struct scsi_low_softc *slp, struct targ_info *ti, u_char *s)
4075 slp = LIST_FIRST(&sl_tab);
4079 printf(">>>>> SCSI_LOW_INFO(0x%lx): %s\n", (u_long) slp->sl_Tnexus, s);
4082 for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
4083 ti = TAILQ_NEXT(ti, ti_chain))
4085 scsi_low_print(slp, ti);
4090 scsi_low_print(slp, ti);
4094 static u_char *phase[] =
4096 "FREE", "ARBSTART", "SELSTART", "SELECTED",
4097 "CMDOUT", "DATA", "MSGIN", "MSGOUT", "STATIN", "DISC", "RESEL"
4101 scsi_low_print(struct scsi_low_softc *slp, struct targ_info *ti)
4103 struct lun_info *li;
4107 if (ti == NULL || ti == slp->sl_Tnexus)
4109 ti = slp->sl_Tnexus;
4110 li = slp->sl_Lnexus;
4111 cb = slp->sl_Qnexus;
4115 li = LIST_FIRST(&ti->ti_litab);
4116 cb = TAILQ_FIRST(&li->li_discq);
4120 printf("%s: === NEXUS T(0x%lx) L(0x%lx) Q(0x%lx) NIO(%d) ===\n",
4121 slp->sl_xname, (u_long) ti, (u_long) li, (u_long) cb,
4127 u_int flags = 0, maxnqio = 0, nqio = 0;
4133 flags = li->li_flags;
4134 maxnqio = li->li_maxnqio;
4138 printf("%s(%d:%d) ph<%s> => ph<%s> DISC(%d) QIO(%d:%d)\n",
4140 ti->ti_id, lun, phase[(int) ti->ti_ophase],
4141 phase[(int) ti->ti_phase], ti->ti_disc,
4146 printf("CCB: cmd[0] 0x%x clen 0x%x dlen 0x%x<0x%x stat 0x%x err %b\n",
4147 (u_int) cb->ccb_scp.scp_cmd[0],
4148 cb->ccb_scp.scp_cmdlen,
4150 cb->ccb_scp.scp_datalen,
4151 (u_int) cb->ccb_sscp.scp_status,
4152 cb->ccb_error, SCSI_LOW_ERRORBITS);
4155 printf("MSGIN: ptr(%x) [%x][%x][%x][%x][%x] attention: %d\n",
4156 (u_int) (ti->ti_msginptr),
4157 (u_int) (ti->ti_msgin[0]),
4158 (u_int) (ti->ti_msgin[1]),
4159 (u_int) (ti->ti_msgin[2]),
4160 (u_int) (ti->ti_msgin[3]),
4161 (u_int) (ti->ti_msgin[4]),
4164 printf("MSGOUT: msgflags 0x%x [%x][%x][%x][%x][%x] msgoutlen %d C_FLAGS: %b\n",
4165 (u_int) ti->ti_msgflags,
4166 (u_int) (ti->ti_msgoutstr[0]),
4167 (u_int) (ti->ti_msgoutstr[1]),
4168 (u_int) (ti->ti_msgoutstr[2]),
4169 (u_int) (ti->ti_msgoutstr[3]),
4170 (u_int) (ti->ti_msgoutstr[4]),
4172 flags, SCSI_LOW_BITS);
4174 #ifdef SCSI_LOW_DIAGNOSTIC
4175 scsi_low_msg_log_show(&ti->ti_log_msgin, "MIN LOG ", 2);
4176 scsi_low_msg_log_show(&ti->ti_log_msgout, "MOUT LOG", 2);
4177 #endif /* SCSI_LOW_DIAGNOSTIC */
4181 printf("SCB: daddr 0x%lx dlen 0x%x stat 0x%x err %b\n",
4182 (u_long) sp->scp_data,
4184 (u_int) sp->scp_status,
4185 slp->sl_error, SCSI_LOW_ERRORBITS);