1 /* $NecBSD: scsi_low.c,v 1.24.10.8 2001/06/26 07:39:44 honda Exp $ */
2 /* $NetBSD$ */
3
4 #include <sys/cdefs.h>
5 __FBSDID("$FreeBSD$");
6
7 #define SCSI_LOW_STATICS
8 #define SCSI_LOW_DEBUG
9 #define SCSI_LOW_NEGOTIATE_BEFORE_SENSE
10 #define SCSI_LOW_START_UP_CHECK
11
12 /* #define SCSI_LOW_INFO_DETAIL */
13
14 /* #define SCSI_LOW_QCLEAR_AFTER_CA */
15 /* #define SCSI_LOW_FLAGS_QUIRKS_OK */
16
17 #define SCSI_LOW_FLAGS_QUIRKS_OK
18
19 /*-
20 * [NetBSD for NEC PC-98 series]
21 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
22 * NetBSD/pc98 porting staff. All rights reserved.
23 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
24 * Naofumi HONDA. All rights reserved.
25 *
26 * [Ported for FreeBSD CAM]
27 * Copyright (c) 2000, 2001
28 * MITSUNAGA Noriaki, NOKUBI Hirotaka and TAKAHASHI Yoshihiro.
29 * All rights reserved.
30 *
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
33 * are met:
34 * 1. Redistributions of source code must retain the above copyright
35 * notice, this list of conditions and the following disclaimer.
36 * 2. Redistributions in binary form must reproduce the above copyright
37 * notice, this list of conditions and the following disclaimer in the
38 * documentation and/or other materials provided with the distribution.
39 * 3. The name of the author may not be used to endorse or promote products
40 * derived from this software without specific prior written permission.
41 *
42 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
43 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
44 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
45 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
46 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
47 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
48 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
50 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
51 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
52 * POSSIBILITY OF SUCH DAMAGE.
53 */
54
55 /* <On the nexus establishment>
56 * When our host is reselected,
57 * nexus establish processes are little complicated.
58 * Normal steps are followings:
59 * 1) Our host selected by target => target nexus (slp->sl_Tnexus)
60 * 2) Identify msgin => lun nexus (slp->sl_Lnexus)
61 * 3) Qtag msg => ccb nexus (slp->sl_Qnexus)
62 */
63 #include "opt_ddb.h"
64
65 #include <sys/param.h>
66 #include <sys/systm.h>
67 #include <sys/kernel.h>
68 #include <sys/bio.h>
69 #include <sys/buf.h>
70 #include <sys/queue.h>
71 #include <sys/malloc.h>
72 #include <sys/errno.h>
73
74 #include <cam/cam.h>
75 #include <cam/cam_ccb.h>
76 #include <cam/cam_sim.h>
77 #include <cam/cam_debug.h>
78 #include <cam/cam_periph.h>
79 #include <cam/cam_xpt_periph.h>
80
81 #include <cam/scsi/scsi_all.h>
82 #include <cam/scsi/scsi_message.h>
83
84 #include <cam/scsi/scsi_low.h>
85
86 #include <sys/cons.h>
87
88 /**************************************************************
89 * Constants
90 **************************************************************/
91 #define SCSI_LOW_POLL_HZ 1000
92
93 /* functions return values */
94 #define SCSI_LOW_START_NO_QTAG 0
95 #define SCSI_LOW_START_QTAG 1
96
97 #define SCSI_LOW_DONE_COMPLETE 0
98 #define SCSI_LOW_DONE_RETRY 1
99
100 /* internal disk flags */
101 #define SCSI_LOW_DISK_DISC 0x00000001
102 #define SCSI_LOW_DISK_QTAG 0x00000002
103 #define SCSI_LOW_DISK_LINK 0x00000004
104 #define SCSI_LOW_DISK_PARITY 0x00000008
105 #define SCSI_LOW_DISK_SYNC 0x00010000
106 #define SCSI_LOW_DISK_WIDE_16 0x00020000
107 #define SCSI_LOW_DISK_WIDE_32 0x00040000
108 #define SCSI_LOW_DISK_WIDE (SCSI_LOW_DISK_WIDE_16 | SCSI_LOW_DISK_WIDE_32)
109 #define SCSI_LOW_DISK_LFLAGS 0x0000ffff
110 #define SCSI_LOW_DISK_TFLAGS 0xffff0000
111
112 static MALLOC_DEFINE(M_SCSILOW, "SCSI low", "SCSI low buffers");
113
114 /**************************************************************
115 * Declarations
116 **************************************************************/
117 /* static */ void scsi_low_info(struct scsi_low_softc *, struct targ_info *, u_char *);
118 static void scsi_low_engage(void *);
119 static struct slccb *scsi_low_establish_ccb(struct targ_info *, struct lun_info *, scsi_low_tag_t);
120 static int scsi_low_done(struct scsi_low_softc *, struct slccb *);
121 static int scsi_low_setup_done(struct scsi_low_softc *, struct slccb *);
122 static void scsi_low_bus_release(struct scsi_low_softc *, struct targ_info *);
123 static void scsi_low_twiddle_wait(void);
124 static struct lun_info *scsi_low_alloc_li(struct targ_info *, int, int);
125 static struct targ_info *scsi_low_alloc_ti(struct scsi_low_softc *, int);
126 static void scsi_low_calcf_lun(struct lun_info *);
127 static void scsi_low_calcf_target(struct targ_info *);
128 static void scsi_low_calcf_show(struct lun_info *);
129 static void scsi_low_reset_nexus(struct scsi_low_softc *, int);
130 static void scsi_low_reset_nexus_target(struct scsi_low_softc *, struct targ_info *, int);
131 static void scsi_low_reset_nexus_lun(struct scsi_low_softc *, struct lun_info *, int);
132 static int scsi_low_init(struct scsi_low_softc *, u_int);
133 static void scsi_low_start(struct scsi_low_softc *);
134 static void scsi_low_free_ti(struct scsi_low_softc *);
135
136 static int scsi_low_alloc_qtag(struct slccb *);
137 static int scsi_low_dealloc_qtag(struct slccb *);
138 static int scsi_low_enqueue(struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *, u_int, u_int);
139 static int scsi_low_message_enqueue(struct scsi_low_softc *, struct targ_info *, struct lun_info *, u_int);
140 static void scsi_low_unit_ready_cmd(struct slccb *);
141 static void scsi_low_timeout(void *);
142 static int scsi_low_timeout_check(struct scsi_low_softc *);
143 #ifdef SCSI_LOW_START_UP_CHECK
144 static int scsi_low_start_up(struct scsi_low_softc *);
145 #endif /* SCSI_LOW_START_UP_CHECK */
146 static int scsi_low_abort_ccb(struct scsi_low_softc *, struct slccb *);
147 static struct slccb *scsi_low_revoke_ccb(struct scsi_low_softc *, struct slccb *, int);
148
149 int scsi_low_version_major = 2;
150 int scsi_low_version_minor = 17;
151
152 static struct scsi_low_softc_tab sl_tab = LIST_HEAD_INITIALIZER(sl_tab);
153 static struct mtx sl_tab_lock;
154 MTX_SYSINIT(sl_tab_lock, &sl_tab_lock, "scsi low table", MTX_DEF);
155
156 /**************************************************************
157 * Debug, Run test and Statics
158 **************************************************************/
159 #ifdef SCSI_LOW_INFO_DETAIL
160 #define SCSI_LOW_INFO(slp, ti, s) scsi_low_info((slp), (ti), (s))
161 #else /* !SCSI_LOW_INFO_DETAIL */
162 #define SCSI_LOW_INFO(slp, ti, s) device_printf((slp)->sl_dev, "%s\n", (s))
163 #endif /* !SCSI_LOW_INFO_DETAIL */
164
165 #ifdef SCSI_LOW_STATICS
166 static struct scsi_low_statics {
167 int nexus_win;
168 int nexus_fail;
169 int nexus_disconnected;
170 int nexus_reselected;
171 int nexus_conflict;
172 } scsi_low_statics;
173 #endif /* SCSI_LOW_STATICS */
174
175 #ifdef SCSI_LOW_DEBUG
176 #define SCSI_LOW_DEBUG_DONE 0x00001
177 #define SCSI_LOW_DEBUG_DISC 0x00002
178 #define SCSI_LOW_DEBUG_SENSE 0x00004
179 #define SCSI_LOW_DEBUG_CALCF 0x00008
180 #define SCSI_LOW_DEBUG_ACTION 0x10000
181 int scsi_low_debug = 0;
182
183 #define SCSI_LOW_MAX_ATTEN_CHECK 32
184 #define SCSI_LOW_ATTEN_CHECK 0x0001
185 #define SCSI_LOW_CMDLNK_CHECK 0x0002
186 #define SCSI_LOW_ABORT_CHECK 0x0004
187 #define SCSI_LOW_NEXUS_CHECK 0x0008
188 int scsi_low_test = 0;
189 int scsi_low_test_id = 0;
190
191 static void scsi_low_test_abort(struct scsi_low_softc *, struct targ_info *, struct lun_info *);
192 static void scsi_low_test_cmdlnk(struct scsi_low_softc *, struct slccb *);
193 static void scsi_low_test_atten(struct scsi_low_softc *, struct targ_info *, u_int);
194 #define SCSI_LOW_DEBUG_TEST_GO(fl, id) \
195 ((scsi_low_test & (fl)) != 0 && (scsi_low_test_id & (1 << (id))) == 0)
196 #define SCSI_LOW_DEBUG_GO(fl, id) \
197 ((scsi_low_debug & (fl)) != 0 && (scsi_low_test_id & (1 << (id))) == 0)
198 #endif /* SCSI_LOW_DEBUG */
199
200 /**************************************************************
201 * CCB
202 **************************************************************/
203 GENERIC_CCB_STATIC_ALLOC(scsi_low, slccb)
204 GENERIC_CCB(scsi_low, slccb, ccb_chain)
205
206 /**************************************************************
207 * Inline functions
208 **************************************************************/
209 #define SCSI_LOW_INLINE static __inline
210 SCSI_LOW_INLINE void scsi_low_activate_qtag(struct slccb *);
211 SCSI_LOW_INLINE void scsi_low_deactivate_qtag(struct slccb *);
212 SCSI_LOW_INLINE void scsi_low_ccb_message_assert(struct slccb *, u_int);
213 SCSI_LOW_INLINE void scsi_low_ccb_message_exec(struct scsi_low_softc *, struct slccb *);
214 SCSI_LOW_INLINE void scsi_low_ccb_message_retry(struct slccb *);
215 SCSI_LOW_INLINE void scsi_low_ccb_message_clear(struct slccb *);
216 SCSI_LOW_INLINE void scsi_low_init_msgsys(struct scsi_low_softc *, struct targ_info *);
217
218 SCSI_LOW_INLINE void
scsi_low_activate_qtag(cb)219 scsi_low_activate_qtag(cb)
220 struct slccb *cb;
221 {
222 struct lun_info *li = cb->li;
223
224 if (cb->ccb_tag != SCSI_LOW_UNKTAG)
225 return;
226
227 li->li_nqio ++;
228 cb->ccb_tag = cb->ccb_otag;
229 }
230
231 SCSI_LOW_INLINE void
scsi_low_deactivate_qtag(cb)232 scsi_low_deactivate_qtag(cb)
233 struct slccb *cb;
234 {
235 struct lun_info *li = cb->li;
236
237 if (cb->ccb_tag == SCSI_LOW_UNKTAG)
238 return;
239
240 li->li_nqio --;
241 cb->ccb_tag = SCSI_LOW_UNKTAG;
242 }
243
244 SCSI_LOW_INLINE void
scsi_low_ccb_message_exec(slp,cb)245 scsi_low_ccb_message_exec(slp, cb)
246 struct scsi_low_softc *slp;
247 struct slccb *cb;
248 {
249
250 scsi_low_assert_msg(slp, cb->ti, cb->ccb_msgoutflag, 0);
251 cb->ccb_msgoutflag = 0;
252 }
253
254 SCSI_LOW_INLINE void
scsi_low_ccb_message_assert(cb,msg)255 scsi_low_ccb_message_assert(cb, msg)
256 struct slccb *cb;
257 u_int msg;
258 {
259
260 cb->ccb_msgoutflag = cb->ccb_omsgoutflag = msg;
261 }
262
263 SCSI_LOW_INLINE void
scsi_low_ccb_message_retry(cb)264 scsi_low_ccb_message_retry(cb)
265 struct slccb *cb;
266 {
267 cb->ccb_msgoutflag = cb->ccb_omsgoutflag;
268 }
269
270 SCSI_LOW_INLINE void
scsi_low_ccb_message_clear(cb)271 scsi_low_ccb_message_clear(cb)
272 struct slccb *cb;
273 {
274 cb->ccb_msgoutflag = 0;
275 }
276
277 SCSI_LOW_INLINE void
scsi_low_init_msgsys(slp,ti)278 scsi_low_init_msgsys(slp, ti)
279 struct scsi_low_softc *slp;
280 struct targ_info *ti;
281 {
282
283 ti->ti_msginptr = 0;
284 ti->ti_emsgflags = ti->ti_msgflags = ti->ti_omsgflags = 0;
285 SCSI_LOW_DEASSERT_ATN(slp);
286 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_NULL);
287 }
288
289 /*=============================================================
290 * START OF OS switch (All OS depend fucntions should be here)
291 =============================================================*/
292 /* common os depend utitlities */
293 #define SCSI_LOW_CMD_RESIDUAL_CHK 0x0001
294 #define SCSI_LOW_CMD_ORDERED_QTAG 0x0002
295 #define SCSI_LOW_CMD_ABORT_WARNING 0x0004
296
297 static u_int8_t scsi_low_cmd_flags[256] = {
298 /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
299 /*0*/ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 0, 0,
300 /*1*/ 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0,
301 /*2*/ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 5, 5,
302 /*3*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 5,
303 };
304
305 struct scsi_low_error_code {
306 int error_bits;
307 int error_code;
308 };
309
310 static struct slccb *scsi_low_find_ccb(struct scsi_low_softc *, u_int, u_int, void *);
311 static int scsi_low_translate_error_code(struct slccb *, struct scsi_low_error_code *);
312
313 static struct slccb *
scsi_low_find_ccb(slp,target,lun,osdep)314 scsi_low_find_ccb(slp, target, lun, osdep)
315 struct scsi_low_softc *slp;
316 u_int target, lun;
317 void *osdep;
318 {
319 struct targ_info *ti;
320 struct lun_info *li;
321 struct slccb *cb;
322
323 ti = slp->sl_ti[target];
324 li = scsi_low_alloc_li(ti, lun, 0);
325 if (li == NULL)
326 return NULL;
327
328 if ((cb = slp->sl_Qnexus) != NULL && cb->osdep == osdep)
329 return cb;
330
331 TAILQ_FOREACH(cb, &slp->sl_start, ccb_chain)
332 {
333 if (cb->osdep == osdep)
334 return cb;
335 }
336
337 TAILQ_FOREACH(cb, &li->li_discq, ccb_chain)
338 {
339 if (cb->osdep == osdep)
340 return cb;
341 }
342 return NULL;
343 }
344
345 static int
scsi_low_translate_error_code(cb,tp)346 scsi_low_translate_error_code(cb, tp)
347 struct slccb *cb;
348 struct scsi_low_error_code *tp;
349 {
350
351 if (cb->ccb_error == 0)
352 return tp->error_code;
353
354 for (tp ++; (cb->ccb_error & tp->error_bits) == 0; tp ++)
355 ;
356 return tp->error_code;
357 }
358
359 /**************************************************************
360 * SCSI INTERFACE (CAM)
361 **************************************************************/
362 #define SCSI_LOW_MALLOC(size) malloc((size), M_SCSILOW, M_NOWAIT)
363 #define SCSI_LOW_FREE(pt) free((pt), M_SCSILOW)
364 #define SCSI_LOW_ALLOC_CCB(flags) scsi_low_get_ccb()
365
366 static void scsi_low_poll_cam(struct cam_sim *);
367 void scsi_low_scsi_action_cam(struct cam_sim *, union ccb *);
368
369 static int scsi_low_attach_cam(struct scsi_low_softc *);
370 static int scsi_low_detach_cam(struct scsi_low_softc *);
371 static int scsi_low_ccb_setup_cam(struct scsi_low_softc *, struct slccb *);
372 static int scsi_low_done_cam(struct scsi_low_softc *, struct slccb *);
373
374 struct scsi_low_error_code scsi_low_error_code_cam[] = {
375 {0, CAM_REQ_CMP},
376 {SENSEIO, CAM_AUTOSNS_VALID | CAM_REQ_CMP_ERR},
377 {SENSEERR, CAM_AUTOSENSE_FAIL},
378 {UACAERR, CAM_SCSI_STATUS_ERROR},
379 {BUSYERR | STATERR, CAM_SCSI_STATUS_ERROR},
380 {SELTIMEOUTIO, CAM_SEL_TIMEOUT},
381 {TIMEOUTIO, CAM_CMD_TIMEOUT},
382 {PDMAERR, CAM_DATA_RUN_ERR},
383 {PARITYERR, CAM_UNCOR_PARITY},
384 {UBFERR, CAM_UNEXP_BUSFREE},
385 {ABORTIO, CAM_REQ_ABORTED},
386 {-1, CAM_UNREC_HBA_ERROR}
387 };
388
389 #define SIM2SLP(sim) ((struct scsi_low_softc *) cam_sim_softc((sim)))
390
391 /* XXX:
392 * Please check a polling hz, currently we assume scsi_low_poll() is
393 * called each 1 ms.
394 */
395 #define SCSI_LOW_CAM_POLL_HZ 1000 /* OK ? */
396
397 static void
scsi_low_poll_cam(sim)398 scsi_low_poll_cam(sim)
399 struct cam_sim *sim;
400 {
401 struct scsi_low_softc *slp = SIM2SLP(sim);
402
403 SCSI_LOW_ASSERT_LOCKED(slp);
404 (*slp->sl_funcs->scsi_low_poll) (slp);
405
406 if (slp->sl_poll_count ++ >=
407 SCSI_LOW_CAM_POLL_HZ / SCSI_LOW_TIMEOUT_HZ)
408 {
409 slp->sl_poll_count = 0;
410 scsi_low_timeout_check(slp);
411 }
412 }
413
414 void
scsi_low_scsi_action_cam(sim,ccb)415 scsi_low_scsi_action_cam(sim, ccb)
416 struct cam_sim *sim;
417 union ccb *ccb;
418 {
419 struct scsi_low_softc *slp = SIM2SLP(sim);
420 struct targ_info *ti;
421 struct lun_info *li;
422 struct slccb *cb;
423 u_int lun, flags, msg, target;
424 int rv;
425
426 SCSI_LOW_ASSERT_LOCKED(slp);
427 target = (u_int) (ccb->ccb_h.target_id);
428 lun = (u_int) ccb->ccb_h.target_lun;
429
430 #ifdef SCSI_LOW_DEBUG
431 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_ACTION, target) != 0)
432 {
433 device_printf(slp->sl_dev,
434 "cam_action: func code 0x%x target: %d, lun: %d\n",
435 ccb->ccb_h.func_code, target, lun);
436 }
437 #endif /* SCSI_LOW_DEBUG */
438
439 switch (ccb->ccb_h.func_code) {
440 case XPT_SCSI_IO: /* Execute the requested I/O operation */
441 #ifdef SCSI_LOW_DIAGNOSTIC
442 if (target == CAM_TARGET_WILDCARD || lun == CAM_LUN_WILDCARD)
443 {
444 device_printf(slp->sl_dev, "invalid target/lun\n");
445 ccb->ccb_h.status = CAM_REQ_INVALID;
446 xpt_done(ccb);
447 return;
448 }
449 #endif /* SCSI_LOW_DIAGNOSTIC */
450
451 if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)) {
452 ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
453 xpt_done(ccb);
454 return;
455 }
456
457 ti = slp->sl_ti[target];
458 cb->osdep = ccb;
459 cb->bp = NULL;
460 if ((ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
461 flags = CCB_AUTOSENSE | CCB_SCSIIO;
462 else
463 flags = CCB_SCSIIO;
464
465 li = scsi_low_alloc_li(ti, lun, 1);
466
467 if (ti->ti_setup_msg != 0)
468 {
469 scsi_low_message_enqueue(slp, ti, li, CCB_AUTOSENSE);
470 }
471
472 scsi_low_enqueue(slp, ti, li, cb, flags, 0);
473
474 #ifdef SCSI_LOW_DEBUG
475 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ABORT_CHECK, target) != 0)
476 {
477 scsi_low_test_abort(slp, ti, li);
478 }
479 #endif /* SCSI_LOW_DEBUG */
480 break;
481
482 case XPT_EN_LUN: /* Enable LUN as a target */
483 case XPT_TARGET_IO: /* Execute target I/O request */
484 case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
485 case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
486 /* XXX Implement */
487 ccb->ccb_h.status = CAM_REQ_INVALID;
488 xpt_done(ccb);
489 break;
490
491 case XPT_ABORT: /* Abort the specified CCB */
492 #ifdef SCSI_LOW_DIAGNOSTIC
493 if (target == CAM_TARGET_WILDCARD || lun == CAM_LUN_WILDCARD)
494 {
495 device_printf(slp->sl_dev, "invalid target/lun\n");
496 ccb->ccb_h.status = CAM_REQ_INVALID;
497 xpt_done(ccb);
498 return;
499 }
500 #endif /* SCSI_LOW_DIAGNOSTIC */
501
502 cb = scsi_low_find_ccb(slp, target, lun, ccb->cab.abort_ccb);
503 rv = scsi_low_abort_ccb(slp, cb);
504
505 if (rv == 0)
506 ccb->ccb_h.status = CAM_REQ_CMP;
507 else
508 ccb->ccb_h.status = CAM_REQ_INVALID;
509 xpt_done(ccb);
510 break;
511
512 case XPT_SET_TRAN_SETTINGS: {
513 struct ccb_trans_settings_scsi *scsi;
514 struct ccb_trans_settings_spi *spi;
515 struct ccb_trans_settings *cts;
516 u_int val;
517
518 #ifdef SCSI_LOW_DIAGNOSTIC
519 if (target == CAM_TARGET_WILDCARD)
520 {
521 device_printf(slp->sl_dev, "invalid target\n");
522 ccb->ccb_h.status = CAM_REQ_INVALID;
523 xpt_done(ccb);
524 return;
525 }
526 #endif /* SCSI_LOW_DIAGNOSTIC */
527 cts = &ccb->cts;
528 ti = slp->sl_ti[target];
529 if (lun == CAM_LUN_WILDCARD)
530 lun = 0;
531
532 scsi = &cts->proto_specific.scsi;
533 spi = &cts->xport_specific.spi;
534 if ((spi->valid & (CTS_SPI_VALID_BUS_WIDTH |
535 CTS_SPI_VALID_SYNC_RATE |
536 CTS_SPI_VALID_SYNC_OFFSET)) != 0)
537 {
538 if (spi->valid & CTS_SPI_VALID_BUS_WIDTH) {
539 val = spi->bus_width;
540 if (val < ti->ti_width)
541 ti->ti_width = val;
542 }
543 if (spi->valid & CTS_SPI_VALID_SYNC_RATE) {
544 val = spi->sync_period;
545 if (val == 0 || val > ti->ti_maxsynch.period)
546 ti->ti_maxsynch.period = val;
547 }
548 if (spi->valid & CTS_SPI_VALID_SYNC_OFFSET) {
549 val = spi->sync_offset;
550 if (val < ti->ti_maxsynch.offset)
551 ti->ti_maxsynch.offset = val;
552 }
553 ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_QUIRKS_VALID;
554 scsi_low_calcf_target(ti);
555 }
556
557 if ((spi->valid & CTS_SPI_FLAGS_DISC_ENB) != 0 ||
558 (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
559
560 li = scsi_low_alloc_li(ti, lun, 1);
561 if (spi->valid & CTS_SPI_FLAGS_DISC_ENB) {
562 li->li_quirks |= SCSI_LOW_DISK_DISC;
563 } else {
564 li->li_quirks &= ~SCSI_LOW_DISK_DISC;
565 }
566
567 if (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) {
568 li->li_quirks |= SCSI_LOW_DISK_QTAG;
569 } else {
570 li->li_quirks &= ~SCSI_LOW_DISK_QTAG;
571 }
572 li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_QUIRKS_VALID;
573 scsi_low_calcf_target(ti);
574 scsi_low_calcf_lun(li);
575 if ((slp->sl_show_result & SHOW_CALCF_RES) != 0)
576 scsi_low_calcf_show(li);
577 }
578
579 ccb->ccb_h.status = CAM_REQ_CMP;
580 xpt_done(ccb);
581 break;
582 }
583
584 case XPT_GET_TRAN_SETTINGS: {
585 struct ccb_trans_settings *cts;
586 u_int diskflags;
587
588 cts = &ccb->cts;
589 #ifdef SCSI_LOW_DIAGNOSTIC
590 if (target == CAM_TARGET_WILDCARD)
591 {
592 device_printf(slp->sl_dev, "invalid target\n");
593 ccb->ccb_h.status = CAM_REQ_INVALID;
594 xpt_done(ccb);
595 return;
596 }
597 #endif /* SCSI_LOW_DIAGNOSTIC */
598 ti = slp->sl_ti[target];
599 if (lun == CAM_LUN_WILDCARD)
600 lun = 0;
601
602 li = scsi_low_alloc_li(ti, lun, 1);
603 if (li != NULL && cts->type == CTS_TYPE_CURRENT_SETTINGS) {
604 struct ccb_trans_settings_scsi *scsi =
605 &cts->proto_specific.scsi;
606 struct ccb_trans_settings_spi *spi =
607 &cts->xport_specific.spi;
608 #ifdef SCSI_LOW_DIAGNOSTIC
609 if (li->li_flags_valid != SCSI_LOW_LUN_FLAGS_ALL_VALID)
610 {
611 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
612 device_printf(slp->sl_dev,
613 "invalid GET_TRANS_CURRENT_SETTINGS call\n");
614 goto settings_out;
615 }
616 #endif /* SCSI_LOW_DIAGNOSTIC */
617 cts->protocol = PROTO_SCSI;
618 cts->protocol_version = SCSI_REV_2;
619 cts->transport = XPORT_SPI;
620 cts->transport_version = 2;
621
622 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
623 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
624
625 diskflags = li->li_diskflags & li->li_cfgflags;
626 if (diskflags & SCSI_LOW_DISK_DISC)
627 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
628 if (diskflags & SCSI_LOW_DISK_QTAG)
629 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
630
631 spi->sync_period = ti->ti_maxsynch.period;
632 spi->valid |= CTS_SPI_VALID_SYNC_RATE;
633 spi->sync_offset = ti->ti_maxsynch.offset;
634 spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
635
636 spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
637 spi->bus_width = ti->ti_width;
638
639 if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
640 scsi->valid = CTS_SCSI_VALID_TQ;
641 spi->valid |= CTS_SPI_VALID_DISC;
642 } else
643 scsi->valid = 0;
644 } else
645 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
646 settings_out:
647 xpt_done(ccb);
648 break;
649 }
650
651 case XPT_CALC_GEOMETRY: { /* not yet HN2 */
652 cam_calc_geometry(&ccb->ccg, /*extended*/1);
653 xpt_done(ccb);
654 break;
655 }
656
657 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
658 scsi_low_restart(slp, SCSI_LOW_RESTART_HARD, NULL);
659 ccb->ccb_h.status = CAM_REQ_CMP;
660 xpt_done(ccb);
661 break;
662
663 case XPT_TERM_IO: /* Terminate the I/O process */
664 ccb->ccb_h.status = CAM_REQ_INVALID;
665 xpt_done(ccb);
666 break;
667
668 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
669 #ifdef SCSI_LOW_DIAGNOSTIC
670 if (target == CAM_TARGET_WILDCARD)
671 {
672 device_printf(slp->sl_dev, "invalid target\n");
673 ccb->ccb_h.status = CAM_REQ_INVALID;
674 xpt_done(ccb);
675 return;
676 }
677 #endif /* SCSI_LOW_DIAGNOSTIC */
678
679 msg = SCSI_LOW_MSG_RESET;
680 if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL))
681 {
682 ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
683 xpt_done(ccb);
684 return;
685 }
686
687 ti = slp->sl_ti[target];
688 if (lun == CAM_LUN_WILDCARD)
689 lun = 0;
690 cb->osdep = ccb;
691 cb->bp = NULL;
692 if ((ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
693 flags = CCB_AUTOSENSE | CCB_NORETRY | CCB_URGENT;
694 else
695 flags = CCB_NORETRY | CCB_URGENT;
696
697 li = scsi_low_alloc_li(ti, lun, 1);
698 scsi_low_enqueue(slp, ti, li, cb, flags, msg);
699 break;
700
701 case XPT_PATH_INQ: { /* Path routing inquiry */
702 struct ccb_pathinq *cpi = &ccb->cpi;
703
704 cpi->version_num = scsi_low_version_major;
705 cpi->hba_inquiry = PI_TAG_ABLE | PI_LINKED_CDB;
706 ti = slp->sl_ti[slp->sl_hostid]; /* host id */
707 if (ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
708 cpi->hba_inquiry |= PI_WIDE_16;
709 if (ti->ti_width > SCSI_LOW_BUS_WIDTH_16)
710 cpi->hba_inquiry |= PI_WIDE_32;
711 if (ti->ti_maxsynch.offset > 0)
712 cpi->hba_inquiry |= PI_SDTR_ABLE;
713 cpi->target_sprt = 0;
714 cpi->hba_misc = 0;
715 cpi->hba_eng_cnt = 0;
716 cpi->max_target = slp->sl_ntargs - 1;
717 cpi->max_lun = slp->sl_nluns - 1;
718 cpi->initiator_id = slp->sl_hostid;
719 cpi->bus_id = cam_sim_bus(sim);
720 cpi->base_transfer_speed = 3300;
721 cpi->transport = XPORT_SPI;
722 cpi->transport_version = 2;
723 cpi->protocol = PROTO_SCSI;
724 cpi->protocol_version = SCSI_REV_2;
725 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
726 strncpy(cpi->hba_vid, "SCSI_LOW", HBA_IDLEN);
727 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
728 cpi->unit_number = cam_sim_unit(sim);
729 cpi->ccb_h.status = CAM_REQ_CMP;
730 xpt_done(ccb);
731 break;
732 }
733
734 default:
735 printf("scsi_low: non support func_code = %d ",
736 ccb->ccb_h.func_code);
737 ccb->ccb_h.status = CAM_REQ_INVALID;
738 xpt_done(ccb);
739 break;
740 }
741 }
742
743 static int
scsi_low_attach_cam(slp)744 scsi_low_attach_cam(slp)
745 struct scsi_low_softc *slp;
746 {
747 struct cam_devq *devq;
748 int tagged_openings;
749
750 devq = cam_simq_alloc(SCSI_LOW_NCCB);
751 if (devq == NULL)
752 return (ENOMEM);
753
754 /*
755 * ask the adapter what subunits are present
756 */
757 tagged_openings = min(slp->sl_openings, SCSI_LOW_MAXNEXUS);
758 slp->sl_sim = cam_sim_alloc(scsi_low_scsi_action_cam,
759 scsi_low_poll_cam,
760 device_get_name(slp->sl_dev), slp,
761 device_get_unit(slp->sl_dev), &slp->sl_lock,
762 slp->sl_openings, tagged_openings, devq);
763
764 if (slp->sl_sim == NULL) {
765 cam_simq_free(devq);
766 return ENODEV;
767 }
768
769 SCSI_LOW_LOCK(slp);
770 if (xpt_bus_register(slp->sl_sim, slp->sl_dev, 0) != CAM_SUCCESS) {
771 cam_sim_free(slp->sl_sim, TRUE);
772 SCSI_LOW_UNLOCK(slp);
773 return ENODEV;
774 }
775
776 if (xpt_create_path(&slp->sl_path, /*periph*/NULL,
777 cam_sim_path(slp->sl_sim), CAM_TARGET_WILDCARD,
778 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
779 xpt_bus_deregister(cam_sim_path(slp->sl_sim));
780 cam_sim_free(slp->sl_sim, /*free_simq*/TRUE);
781 SCSI_LOW_UNLOCK(slp);
782 return ENODEV;
783 }
784
785 slp->sl_show_result = SHOW_CALCF_RES; /* OK ? */
786 SCSI_LOW_UNLOCK(slp);
787 return 0;
788 }
789
790 static int
scsi_low_detach_cam(slp)791 scsi_low_detach_cam(slp)
792 struct scsi_low_softc *slp;
793 {
794
795 xpt_async(AC_LOST_DEVICE, slp->sl_path, NULL);
796 xpt_free_path(slp->sl_path);
797 xpt_bus_deregister(cam_sim_path(slp->sl_sim));
798 cam_sim_free(slp->sl_sim, /* free_devq */ TRUE);
799 return 0;
800 }
801
802 static int
scsi_low_ccb_setup_cam(slp,cb)803 scsi_low_ccb_setup_cam(slp, cb)
804 struct scsi_low_softc *slp;
805 struct slccb *cb;
806 {
807 union ccb *ccb = (union ccb *) cb->osdep;
808
809 if ((cb->ccb_flags & CCB_SCSIIO) != 0)
810 {
811 cb->ccb_scp.scp_cmd = ccb->csio.cdb_io.cdb_bytes;
812 cb->ccb_scp.scp_cmdlen = (int) ccb->csio.cdb_len;
813 cb->ccb_scp.scp_data = ccb->csio.data_ptr;
814 cb->ccb_scp.scp_datalen = (int) ccb->csio.dxfer_len;
815 if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
816 cb->ccb_scp.scp_direction = SCSI_LOW_WRITE;
817 else /* if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) */
818 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
819 cb->ccb_tcmax = ccb->ccb_h.timeout / 1000;
820 }
821 else
822 {
823 scsi_low_unit_ready_cmd(cb);
824 }
825 return SCSI_LOW_START_QTAG;
826 }
827
828 static int
scsi_low_done_cam(slp,cb)829 scsi_low_done_cam(slp, cb)
830 struct scsi_low_softc *slp;
831 struct slccb *cb;
832 {
833 union ccb *ccb;
834
835 ccb = (union ccb *) cb->osdep;
836 if (cb->ccb_error == 0)
837 {
838 ccb->ccb_h.status = CAM_REQ_CMP;
839 ccb->csio.resid = 0;
840 }
841 else
842 {
843 if (cb->ccb_rcnt >= slp->sl_max_retry)
844 cb->ccb_error |= ABORTIO;
845
846 if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
847 (cb->ccb_error & ABORTIO) == 0)
848 return EJUSTRETURN;
849
850 if ((cb->ccb_error & SENSEIO) != 0)
851 {
852 memcpy(&ccb->csio.sense_data,
853 &cb->ccb_sense,
854 sizeof(ccb->csio.sense_data));
855 }
856
857 ccb->ccb_h.status = scsi_low_translate_error_code(cb,
858 &scsi_low_error_code_cam[0]);
859
860 #ifdef SCSI_LOW_DIAGNOSTIC
861 if ((cb->ccb_flags & CCB_SILENT) == 0 &&
862 cb->ccb_scp.scp_cmdlen > 0 &&
863 (scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
864 SCSI_LOW_CMD_ABORT_WARNING) != 0)
865 {
866 device_printf(slp->sl_dev,
867 "WARNING: scsi_low IO abort\n");
868 scsi_low_print(slp, NULL);
869 }
870 #endif /* SCSI_LOW_DIAGNOSTIC */
871 }
872
873 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == 0)
874 ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
875
876 if (cb->ccb_scp.scp_status == ST_UNKNOWN)
877 ccb->csio.scsi_status = 0; /* XXX */
878 else
879 ccb->csio.scsi_status = cb->ccb_scp.scp_status;
880
881 if ((cb->ccb_flags & CCB_NOSDONE) == 0)
882 xpt_done(ccb);
883 return 0;
884 }
885
886 /**************************************************************
887 * scsi low deactivate and activate
888 **************************************************************/
889 int
scsi_low_is_busy(slp)890 scsi_low_is_busy(slp)
891 struct scsi_low_softc *slp;
892 {
893
894 if (slp->sl_nio > 0)
895 return EBUSY;
896 return 0;
897 }
898
899 int
scsi_low_deactivate(slp)900 scsi_low_deactivate(slp)
901 struct scsi_low_softc *slp;
902 {
903
904 slp->sl_flags |= HW_INACTIVE;
905 callout_stop(&slp->sl_timeout_timer);
906 callout_stop(&slp->sl_engage_timer);
907 return 0;
908 }
909
910 int
scsi_low_activate(slp)911 scsi_low_activate(slp)
912 struct scsi_low_softc *slp;
913 {
914 int error;
915
916 slp->sl_flags &= ~HW_INACTIVE;
917 if ((error = scsi_low_restart(slp, SCSI_LOW_RESTART_HARD, NULL)) != 0)
918 {
919 slp->sl_flags |= HW_INACTIVE;
920 return error;
921 }
922
923 slp->sl_timeout_count = 0;
924 callout_reset(&slp->sl_timeout_timer, hz / SCSI_LOW_TIMEOUT_HZ,
925 scsi_low_timeout, slp);
926 return 0;
927 }
928
929 /**************************************************************
930 * scsi low log
931 **************************************************************/
932 #ifdef SCSI_LOW_DIAGNOSTIC
933 static void scsi_low_msg_log_init(struct scsi_low_msg_log *);
934 static void scsi_low_msg_log_write(struct scsi_low_msg_log *, u_int8_t *, int);
935 static void scsi_low_msg_log_show(struct scsi_low_msg_log *, char *, int);
936
937 static void
scsi_low_msg_log_init(slmlp)938 scsi_low_msg_log_init(slmlp)
939 struct scsi_low_msg_log *slmlp;
940 {
941
942 slmlp->slml_ptr = 0;
943 }
944
945 static void
scsi_low_msg_log_write(slmlp,datap,len)946 scsi_low_msg_log_write(slmlp, datap, len)
947 struct scsi_low_msg_log *slmlp;
948 u_int8_t *datap;
949 int len;
950 {
951 int ptr, ind;
952
953 if (slmlp->slml_ptr >= SCSI_LOW_MSG_LOG_DATALEN)
954 return;
955
956 ptr = slmlp->slml_ptr ++;
957 for (ind = 0; ind < sizeof(slmlp->slml_msg[0]) && ind < len; ind ++)
958 slmlp->slml_msg[ptr].msg[ind] = datap[ind];
959 for ( ; ind < sizeof(slmlp->slml_msg[0]); ind ++)
960 slmlp->slml_msg[ptr].msg[ind] = 0;
961 }
962
963 static void
scsi_low_msg_log_show(slmlp,s,len)964 scsi_low_msg_log_show(slmlp, s, len)
965 struct scsi_low_msg_log *slmlp;
966 char *s;
967 int len;
968 {
969 int ptr, ind;
970
971 printf("%s: (%d) ", s, slmlp->slml_ptr);
972 for (ptr = 0; ptr < slmlp->slml_ptr; ptr ++)
973 {
974 for (ind = 0; ind < len && ind < sizeof(slmlp->slml_msg[0]);
975 ind ++)
976 {
977 printf("[%x]", (u_int) slmlp->slml_msg[ptr].msg[ind]);
978 }
979 printf(">");
980 }
981 printf("\n");
982 }
983 #endif /* SCSI_LOW_DIAGNOSTIC */
984
985 /**************************************************************
986 * power control
987 **************************************************************/
988 static void
scsi_low_engage(arg)989 scsi_low_engage(arg)
990 void *arg;
991 {
992 struct scsi_low_softc *slp = arg;
993
994 SCSI_LOW_ASSERT_LOCKED(slp);
995 switch (slp->sl_rstep)
996 {
997 case 0:
998 slp->sl_rstep ++;
999 (*slp->sl_funcs->scsi_low_power) (slp, SCSI_LOW_ENGAGE);
1000 callout_reset(&slp->sl_engage_timer, hz / 1000,
1001 scsi_low_engage, slp);
1002 break;
1003
1004 case 1:
1005 slp->sl_rstep ++;
1006 slp->sl_flags &= ~HW_RESUME;
1007 scsi_low_start(slp);
1008 break;
1009
1010 case 2:
1011 break;
1012 }
1013 }
1014
1015 static int
scsi_low_init(slp,flags)1016 scsi_low_init(slp, flags)
1017 struct scsi_low_softc *slp;
1018 u_int flags;
1019 {
1020 int rv = 0;
1021
1022 slp->sl_flags |= HW_INITIALIZING;
1023
1024 /* clear power control timeout */
1025 if ((slp->sl_flags & HW_POWERCTRL) != 0)
1026 {
1027 callout_stop(&slp->sl_engage_timer);
1028 slp->sl_flags &= ~(HW_POWDOWN | HW_RESUME);
1029 slp->sl_active = 1;
1030 slp->sl_powc = SCSI_LOW_POWDOWN_TC;
1031 }
1032
1033 /* reset current nexus */
1034 scsi_low_reset_nexus(slp, flags);
1035 if ((slp->sl_flags & HW_INACTIVE) != 0)
1036 {
1037 rv = EBUSY;
1038 goto out;
1039 }
1040
1041 if (flags != SCSI_LOW_RESTART_SOFT)
1042 {
1043 rv = ((*slp->sl_funcs->scsi_low_init) (slp, flags));
1044 }
1045
1046 out:
1047 slp->sl_flags &= ~HW_INITIALIZING;
1048 return rv;
1049 }
1050
1051 /**************************************************************
1052 * allocate lun_info
1053 **************************************************************/
1054 static struct lun_info *
scsi_low_alloc_li(ti,lun,alloc)1055 scsi_low_alloc_li(ti, lun, alloc)
1056 struct targ_info *ti;
1057 int lun;
1058 int alloc;
1059 {
1060 struct scsi_low_softc *slp = ti->ti_sc;
1061 struct lun_info *li;
1062
1063 li = LIST_FIRST(&ti->ti_litab);
1064 if (li != NULL)
1065 {
1066 if (li->li_lun == lun)
1067 return li;
1068
1069 while ((li = LIST_NEXT(li, lun_chain)) != NULL)
1070 {
1071 if (li->li_lun == lun)
1072 {
1073 LIST_REMOVE(li, lun_chain);
1074 LIST_INSERT_HEAD(&ti->ti_litab, li, lun_chain);
1075 return li;
1076 }
1077 }
1078 }
1079
1080 if (alloc == 0)
1081 return li;
1082
1083 li = SCSI_LOW_MALLOC(ti->ti_lunsize);
1084 if (li == NULL)
1085 panic("no lun info mem");
1086
1087 bzero(li, ti->ti_lunsize);
1088 li->li_lun = lun;
1089 li->li_ti = ti;
1090
1091 li->li_cfgflags = SCSI_LOW_SYNC | SCSI_LOW_LINK | SCSI_LOW_DISC |
1092 SCSI_LOW_QTAG;
1093 li->li_quirks = li->li_diskflags = SCSI_LOW_DISK_LFLAGS;
1094 li->li_flags_valid = SCSI_LOW_LUN_FLAGS_USER_VALID;
1095 #ifdef SCSI_LOW_FLAGS_QUIRKS_OK
1096 li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_QUIRKS_VALID;
1097 #endif /* SCSI_LOW_FLAGS_QUIRKS_OK */
1098
1099 li->li_qtagbits = (u_int) -1;
1100
1101 TAILQ_INIT(&li->li_discq);
1102 LIST_INSERT_HEAD(&ti->ti_litab, li, lun_chain);
1103
1104 /* host specific structure initialization per lun */
1105 if (slp->sl_funcs->scsi_low_lun_init != NULL)
1106 (*slp->sl_funcs->scsi_low_lun_init)
1107 (slp, ti, li, SCSI_LOW_INFO_ALLOC);
1108 scsi_low_calcf_lun(li);
1109 return li;
1110 }
1111
1112 /**************************************************************
1113 * allocate targ_info
1114 **************************************************************/
1115 static struct targ_info *
scsi_low_alloc_ti(slp,targ)1116 scsi_low_alloc_ti(slp, targ)
1117 struct scsi_low_softc *slp;
1118 int targ;
1119 {
1120 struct targ_info *ti;
1121
1122 if (TAILQ_FIRST(&slp->sl_titab) == NULL)
1123 TAILQ_INIT(&slp->sl_titab);
1124
1125 ti = SCSI_LOW_MALLOC(slp->sl_targsize);
1126 if (ti == NULL)
1127 panic("%s short of memory", device_get_nameunit(slp->sl_dev));
1128
1129 bzero(ti, slp->sl_targsize);
1130 ti->ti_id = targ;
1131 ti->ti_sc = slp;
1132
1133 slp->sl_ti[targ] = ti;
1134 TAILQ_INSERT_TAIL(&slp->sl_titab, ti, ti_chain);
1135 LIST_INIT(&ti->ti_litab);
1136
1137 ti->ti_quirks = ti->ti_diskflags = SCSI_LOW_DISK_TFLAGS;
1138 ti->ti_owidth = SCSI_LOW_BUS_WIDTH_8;
1139 ti->ti_flags_valid = SCSI_LOW_TARG_FLAGS_USER_VALID;
1140 #ifdef SCSI_LOW_FLAGS_QUIRKS_OK
1141 ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_QUIRKS_VALID;
1142 #endif /* SCSI_LOW_FLAGS_QUIRKS_OK */
1143
1144 if (slp->sl_funcs->scsi_low_targ_init != NULL)
1145 {
1146 (*slp->sl_funcs->scsi_low_targ_init)
1147 (slp, ti, SCSI_LOW_INFO_ALLOC);
1148 }
1149 scsi_low_calcf_target(ti);
1150 return ti;
1151 }
1152
1153 static void
scsi_low_free_ti(slp)1154 scsi_low_free_ti(slp)
1155 struct scsi_low_softc *slp;
1156 {
1157 struct targ_info *ti, *tib;
1158 struct lun_info *li, *nli;
1159
1160 for (ti = TAILQ_FIRST(&slp->sl_titab); ti; ti = tib)
1161 {
1162 for (li = LIST_FIRST(&ti->ti_litab); li != NULL; li = nli)
1163 {
1164 if (slp->sl_funcs->scsi_low_lun_init != NULL)
1165 {
1166 (*slp->sl_funcs->scsi_low_lun_init)
1167 (slp, ti, li, SCSI_LOW_INFO_DEALLOC);
1168 }
1169 nli = LIST_NEXT(li, lun_chain);
1170 SCSI_LOW_FREE(li);
1171 }
1172
1173 if (slp->sl_funcs->scsi_low_targ_init != NULL)
1174 {
1175 (*slp->sl_funcs->scsi_low_targ_init)
1176 (slp, ti, SCSI_LOW_INFO_DEALLOC);
1177 }
1178 tib = TAILQ_NEXT(ti, ti_chain);
1179 SCSI_LOW_FREE(ti);
1180 }
1181 }
1182
1183 /**************************************************************
1184 * timeout
1185 **************************************************************/
1186 void
scsi_low_bus_idle(slp)1187 scsi_low_bus_idle(slp)
1188 struct scsi_low_softc *slp;
1189 {
1190
1191 slp->sl_retry_sel = 0;
1192 if (slp->sl_Tnexus == NULL)
1193 scsi_low_start(slp);
1194 }
1195
1196 static void
scsi_low_timeout(arg)1197 scsi_low_timeout(arg)
1198 void *arg;
1199 {
1200 struct scsi_low_softc *slp = arg;
1201
1202 SCSI_LOW_ASSERT_LOCKED(slp);
1203 (void) scsi_low_timeout_check(slp);
1204 callout_schedule(&slp->sl_timeout_timer, hz / SCSI_LOW_TIMEOUT_HZ);
1205 }
1206
1207 static int
scsi_low_timeout_check(slp)1208 scsi_low_timeout_check(slp)
1209 struct scsi_low_softc *slp;
1210 {
1211 struct targ_info *ti;
1212 struct lun_info *li;
1213 struct slccb *cb = NULL; /* XXX */
1214
1215 /* selection restart */
1216 if (slp->sl_retry_sel != 0)
1217 {
1218 slp->sl_retry_sel = 0;
1219 if (slp->sl_Tnexus != NULL)
1220 goto step1;
1221
1222 cb = TAILQ_FIRST(&slp->sl_start);
1223 if (cb == NULL)
1224 goto step1;
1225
1226 if (cb->ccb_selrcnt >= SCSI_LOW_MAX_SELECTION_RETRY)
1227 {
1228 cb->ccb_flags |= CCB_NORETRY;
1229 cb->ccb_error |= SELTIMEOUTIO;
1230 if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
1231 panic("%s: ccb not finished",
1232 device_get_nameunit(slp->sl_dev));
1233 }
1234
1235 if (slp->sl_Tnexus == NULL)
1236 scsi_low_start(slp);
1237 }
1238
1239 /* call hardware timeout */
1240 step1:
1241 if (slp->sl_funcs->scsi_low_timeout != NULL)
1242 {
1243 (*slp->sl_funcs->scsi_low_timeout) (slp);
1244 }
1245
1246 if (slp->sl_timeout_count ++ <
1247 SCSI_LOW_TIMEOUT_CHECK_INTERVAL * SCSI_LOW_TIMEOUT_HZ)
1248 return 0;
1249
1250 slp->sl_timeout_count = 0;
1251 if (slp->sl_nio > 0)
1252 {
1253 if ((cb = slp->sl_Qnexus) != NULL)
1254 {
1255 cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1256 if (cb->ccb_tc < 0)
1257 goto bus_reset;
1258 }
1259 else if (slp->sl_disc == 0)
1260 {
1261 if ((cb = TAILQ_FIRST(&slp->sl_start)) == NULL)
1262 return 0;
1263
1264 cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1265 if (cb->ccb_tc < 0)
1266 goto bus_reset;
1267 }
1268 else for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
1269 ti = TAILQ_NEXT(ti, ti_chain))
1270 {
1271 if (ti->ti_disc == 0)
1272 continue;
1273
1274 for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
1275 li = LIST_NEXT(li, lun_chain))
1276 {
1277 for (cb = TAILQ_FIRST(&li->li_discq);
1278 cb != NULL;
1279 cb = TAILQ_NEXT(cb, ccb_chain))
1280 {
1281 cb->ccb_tc -=
1282 SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1283 if (cb->ccb_tc < 0)
1284 goto bus_reset;
1285 }
1286 }
1287 }
1288
1289 }
1290 else if ((slp->sl_flags & HW_POWERCTRL) != 0)
1291 {
1292 if ((slp->sl_flags & (HW_POWDOWN | HW_RESUME)) != 0)
1293 return 0;
1294
1295 if (slp->sl_active != 0)
1296 {
1297 slp->sl_powc = SCSI_LOW_POWDOWN_TC;
1298 slp->sl_active = 0;
1299 return 0;
1300 }
1301
1302 slp->sl_powc --;
1303 if (slp->sl_powc < 0)
1304 {
1305 slp->sl_powc = SCSI_LOW_POWDOWN_TC;
1306 slp->sl_flags |= HW_POWDOWN;
1307 (*slp->sl_funcs->scsi_low_power)
1308 (slp, SCSI_LOW_POWDOWN);
1309 }
1310 }
1311 return 0;
1312
1313 bus_reset:
1314 cb->ccb_error |= TIMEOUTIO;
1315 device_printf(slp->sl_dev, "slccb (0x%lx) timeout!\n", (u_long) cb);
1316 scsi_low_info(slp, NULL, "scsi bus hangup. try to recover.");
1317 scsi_low_init(slp, SCSI_LOW_RESTART_HARD);
1318 scsi_low_start(slp);
1319 return ERESTART;
1320 }
1321
1322
1323 static int
scsi_low_abort_ccb(slp,cb)1324 scsi_low_abort_ccb(slp, cb)
1325 struct scsi_low_softc *slp;
1326 struct slccb *cb;
1327 {
1328 struct targ_info *ti;
1329 struct lun_info *li;
1330 u_int msg;
1331
1332 if (cb == NULL)
1333 return EINVAL;
1334 if ((cb->ccb_omsgoutflag &
1335 (SCSI_LOW_MSG_ABORT | SCSI_LOW_MSG_ABORT_QTAG)) != 0)
1336 return EBUSY;
1337
1338 ti = cb->ti;
1339 li = cb->li;
1340 if (cb->ccb_tag == SCSI_LOW_UNKTAG)
1341 msg = SCSI_LOW_MSG_ABORT;
1342 else
1343 msg = SCSI_LOW_MSG_ABORT_QTAG;
1344
1345 cb->ccb_error |= ABORTIO;
1346 cb->ccb_flags |= CCB_NORETRY;
1347 scsi_low_ccb_message_assert(cb, msg);
1348
1349 if (cb == slp->sl_Qnexus)
1350 {
1351 scsi_low_assert_msg(slp, ti, msg, 1);
1352 }
1353 else if ((cb->ccb_flags & CCB_DISCQ) != 0)
1354 {
1355 if (scsi_low_revoke_ccb(slp, cb, 0) == NULL)
1356 panic("%s: revoked ccb done",
1357 device_get_nameunit(slp->sl_dev));
1358
1359 cb->ccb_flags |= CCB_STARTQ;
1360 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1361
1362 if (slp->sl_Tnexus == NULL)
1363 scsi_low_start(slp);
1364 }
1365 else
1366 {
1367 if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
1368 panic("%s: revoked ccb retried",
1369 device_get_nameunit(slp->sl_dev));
1370 }
1371 return 0;
1372 }
1373
1374 /**************************************************************
1375 * Generic SCSI INTERFACE
1376 **************************************************************/
1377 int
scsi_low_attach(slp,openings,ntargs,nluns,targsize,lunsize)1378 scsi_low_attach(slp, openings, ntargs, nluns, targsize, lunsize)
1379 struct scsi_low_softc *slp;
1380 int openings, ntargs, nluns, targsize, lunsize;
1381 {
1382 struct targ_info *ti;
1383 struct lun_info *li;
1384 int i, nccb, rv;
1385
1386 if (ntargs > SCSI_LOW_NTARGETS)
1387 {
1388 printf("scsi_low: %d targets are too large\n", ntargs);
1389 printf("change kernel options SCSI_LOW_NTARGETS");
1390 return EINVAL;
1391 }
1392
1393 if (openings <= 0)
1394 slp->sl_openings = (SCSI_LOW_NCCB / ntargs);
1395 else
1396 slp->sl_openings = openings;
1397 slp->sl_ntargs = ntargs;
1398 slp->sl_nluns = nluns;
1399 slp->sl_max_retry = SCSI_LOW_MAX_RETRY;
1400
1401 if (lunsize < sizeof(struct lun_info))
1402 lunsize = sizeof(struct lun_info);
1403
1404 if (targsize < sizeof(struct targ_info))
1405 targsize = sizeof(struct targ_info);
1406
1407 slp->sl_targsize = targsize;
1408 for (i = 0; i < ntargs; i ++)
1409 {
1410 ti = scsi_low_alloc_ti(slp, i);
1411 ti->ti_lunsize = lunsize;
1412 li = scsi_low_alloc_li(ti, 0, 1);
1413 }
1414
1415 /* initialize queue */
1416 nccb = openings * ntargs;
1417 if (nccb >= SCSI_LOW_NCCB || nccb <= 0)
1418 nccb = SCSI_LOW_NCCB;
1419 scsi_low_init_ccbque(nccb);
1420 TAILQ_INIT(&slp->sl_start);
1421
1422 /* call os depend attach */
1423 rv = scsi_low_attach_cam(slp);
1424 if (rv != 0)
1425 {
1426 device_printf(slp->sl_dev,
1427 "scsi_low_attach: osdep attach failed\n");
1428 return (rv);
1429 }
1430
1431 /* check hardware */
1432 DELAY(1000); /* wait for 1ms */
1433 SCSI_LOW_LOCK(slp);
1434 if (scsi_low_init(slp, SCSI_LOW_RESTART_HARD) != 0)
1435 {
1436 device_printf(slp->sl_dev,
1437 "scsi_low_attach: initialization failed\n");
1438 SCSI_LOW_UNLOCK(slp);
1439 return EINVAL;
1440 }
1441
1442 /* start watch dog */
1443 slp->sl_timeout_count = 0;
1444 callout_reset(&slp->sl_timeout_timer, hz / SCSI_LOW_TIMEOUT_HZ,
1445 scsi_low_timeout, slp);
1446 mtx_lock(&sl_tab_lock);
1447 LIST_INSERT_HEAD(&sl_tab, slp, sl_chain);
1448 mtx_unlock(&sl_tab_lock);
1449
1450 /* fake call */
1451 scsi_low_abort_ccb(slp, scsi_low_find_ccb(slp, 0, 0, NULL));
1452
1453 #ifdef SCSI_LOW_START_UP_CHECK
1454 /* probing devices */
1455 scsi_low_start_up(slp);
1456 #endif /* SCSI_LOW_START_UP_CHECK */
1457 SCSI_LOW_UNLOCK(slp);
1458
1459 return 0;
1460 }
1461
1462 int
scsi_low_detach(slp)1463 scsi_low_detach(slp)
1464 struct scsi_low_softc *slp;
1465 {
1466 int rv;
1467
1468 SCSI_LOW_LOCK(slp);
1469 if (scsi_low_is_busy(slp) != 0)
1470 {
1471 SCSI_LOW_UNLOCK(slp);
1472 return EBUSY;
1473 }
1474
1475 scsi_low_deactivate(slp);
1476
1477 rv = scsi_low_detach_cam(slp);
1478 if (rv != 0)
1479 {
1480 SCSI_LOW_UNLOCK(slp);
1481 return EBUSY;
1482 }
1483
1484 scsi_low_free_ti(slp);
1485 SCSI_LOW_UNLOCK(slp);
1486 callout_drain(&slp->sl_timeout_timer);
1487 callout_drain(&slp->sl_engage_timer);
1488 mtx_lock(&sl_tab_lock);
1489 LIST_REMOVE(slp, sl_chain);
1490 mtx_unlock(&sl_tab_lock);
1491 return 0;
1492 }
1493
1494 /**************************************************************
1495 * Generic enqueue
1496 **************************************************************/
1497 static int
scsi_low_enqueue(slp,ti,li,cb,flags,msg)1498 scsi_low_enqueue(slp, ti, li, cb, flags, msg)
1499 struct scsi_low_softc *slp;
1500 struct targ_info *ti;
1501 struct lun_info *li;
1502 struct slccb *cb;
1503 u_int flags, msg;
1504 {
1505
1506 cb->ti = ti;
1507 cb->li = li;
1508
1509 scsi_low_ccb_message_assert(cb, msg);
1510
1511 cb->ccb_otag = cb->ccb_tag = SCSI_LOW_UNKTAG;
1512 scsi_low_alloc_qtag(cb);
1513
1514 cb->ccb_flags = flags | CCB_STARTQ;
1515 cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
1516 cb->ccb_error |= PENDINGIO;
1517
1518 if ((flags & CCB_URGENT) != 0)
1519 {
1520 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1521 }
1522 else
1523 {
1524 TAILQ_INSERT_TAIL(&slp->sl_start, cb, ccb_chain);
1525 }
1526
1527 slp->sl_nio ++;
1528
1529 if (slp->sl_Tnexus == NULL)
1530 scsi_low_start(slp);
1531 return 0;
1532 }
1533
1534 static int
scsi_low_message_enqueue(slp,ti,li,flags)1535 scsi_low_message_enqueue(slp, ti, li, flags)
1536 struct scsi_low_softc *slp;
1537 struct targ_info *ti;
1538 struct lun_info *li;
1539 u_int flags;
1540 {
1541 struct slccb *cb;
1542 u_int tmsgflags;
1543
1544 tmsgflags = ti->ti_setup_msg;
1545 ti->ti_setup_msg = 0;
1546
1547 flags |= CCB_NORETRY;
1548 if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
1549 return ENOMEM;
1550
1551 cb->osdep = NULL;
1552 cb->bp = NULL;
1553 scsi_low_enqueue(slp, ti, li, cb, flags, tmsgflags);
1554 return 0;
1555 }
1556
1557 /**************************************************************
1558 * Generic Start & Done
1559 **************************************************************/
1560 #define SLSC_MODE_SENSE_SHORT 0x1a
1561 static u_int8_t ss_cmd[6] = {START_STOP, 0, 0, 0, SSS_START, 0};
1562 static u_int8_t sms_cmd[6] = {SLSC_MODE_SENSE_SHORT, 0x08, 0x0a, 0,
1563 sizeof(struct scsi_low_mode_sense_data), 0};
1564 static u_int8_t inq_cmd[6] = {INQUIRY, 0, 0, 0,
1565 sizeof(struct scsi_low_inq_data), 0};
1566 static u_int8_t unit_ready_cmd[6];
1567 static int scsi_low_setup_start(struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *);
1568 static int scsi_low_sense_abort_start(struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *);
1569 static int scsi_low_resume(struct scsi_low_softc *);
1570
1571 static void
scsi_low_unit_ready_cmd(cb)1572 scsi_low_unit_ready_cmd(cb)
1573 struct slccb *cb;
1574 {
1575
1576 cb->ccb_scp.scp_cmd = unit_ready_cmd;
1577 cb->ccb_scp.scp_cmdlen = sizeof(unit_ready_cmd);
1578 cb->ccb_scp.scp_datalen = 0;
1579 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1580 cb->ccb_tcmax = 15;
1581 }
1582
1583 static int
scsi_low_sense_abort_start(slp,ti,li,cb)1584 scsi_low_sense_abort_start(slp, ti, li, cb)
1585 struct scsi_low_softc *slp;
1586 struct targ_info *ti;
1587 struct lun_info *li;
1588 struct slccb *cb;
1589 {
1590
1591 cb->ccb_scp.scp_cmdlen = 6;
1592 bzero(cb->ccb_scsi_cmd, cb->ccb_scp.scp_cmdlen);
1593 cb->ccb_scsi_cmd[0] = REQUEST_SENSE;
1594 cb->ccb_scsi_cmd[4] = sizeof(cb->ccb_sense);
1595 cb->ccb_scp.scp_cmd = cb->ccb_scsi_cmd;
1596 cb->ccb_scp.scp_data = (u_int8_t *) &cb->ccb_sense;
1597 cb->ccb_scp.scp_datalen = sizeof(cb->ccb_sense);
1598 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1599 cb->ccb_tcmax = 15;
1600 scsi_low_ccb_message_clear(cb);
1601 if ((cb->ccb_flags & CCB_CLEARQ) != 0)
1602 {
1603 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
1604 }
1605 else
1606 {
1607 bzero(&cb->ccb_sense, sizeof(cb->ccb_sense));
1608 #ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
1609 scsi_low_assert_msg(slp, ti, ti->ti_setup_msg_done, 0);
1610 #endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
1611 }
1612
1613 return SCSI_LOW_START_NO_QTAG;
1614 }
1615
1616 static int
scsi_low_setup_start(slp,ti,li,cb)1617 scsi_low_setup_start(slp, ti, li, cb)
1618 struct scsi_low_softc *slp;
1619 struct targ_info *ti;
1620 struct lun_info *li;
1621 struct slccb *cb;
1622 {
1623
1624 switch(li->li_state)
1625 {
1626 case SCSI_LOW_LUN_SLEEP:
1627 scsi_low_unit_ready_cmd(cb);
1628 break;
1629
1630 case SCSI_LOW_LUN_START:
1631 cb->ccb_scp.scp_cmd = ss_cmd;
1632 cb->ccb_scp.scp_cmdlen = sizeof(ss_cmd);
1633 cb->ccb_scp.scp_datalen = 0;
1634 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1635 cb->ccb_tcmax = 30;
1636 break;
1637
1638 case SCSI_LOW_LUN_INQ:
1639 cb->ccb_scp.scp_cmd = inq_cmd;
1640 cb->ccb_scp.scp_cmdlen = sizeof(inq_cmd);
1641 cb->ccb_scp.scp_data = (u_int8_t *)&li->li_inq;
1642 cb->ccb_scp.scp_datalen = sizeof(li->li_inq);
1643 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1644 cb->ccb_tcmax = 15;
1645 break;
1646
1647 case SCSI_LOW_LUN_MODEQ:
1648 cb->ccb_scp.scp_cmd = sms_cmd;
1649 cb->ccb_scp.scp_cmdlen = sizeof(sms_cmd);
1650 cb->ccb_scp.scp_data = (u_int8_t *)&li->li_sms;
1651 cb->ccb_scp.scp_datalen = sizeof(li->li_sms);
1652 cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1653 cb->ccb_tcmax = 15;
1654 return SCSI_LOW_START_QTAG;
1655
1656 default:
1657 panic("%s: no setup phase", device_get_nameunit(slp->sl_dev));
1658 }
1659
1660 return SCSI_LOW_START_NO_QTAG;
1661 }
1662
1663 static int
scsi_low_resume(slp)1664 scsi_low_resume(slp)
1665 struct scsi_low_softc *slp;
1666 {
1667
1668 if (slp->sl_flags & HW_RESUME)
1669 return EJUSTRETURN;
1670 slp->sl_flags &= ~HW_POWDOWN;
1671 if (slp->sl_funcs->scsi_low_power != NULL)
1672 {
1673 slp->sl_flags |= HW_RESUME;
1674 slp->sl_rstep = 0;
1675 (*slp->sl_funcs->scsi_low_power) (slp, SCSI_LOW_ENGAGE);
1676 callout_reset(&slp->sl_engage_timer, hz / 1000,
1677 scsi_low_engage, slp);
1678 return EJUSTRETURN;
1679 }
1680 return 0;
1681 }
1682
1683 static void
scsi_low_start(slp)1684 scsi_low_start(slp)
1685 struct scsi_low_softc *slp;
1686 {
1687 struct targ_info *ti;
1688 struct lun_info *li;
1689 struct slccb *cb;
1690 int rv;
1691
1692 /* check hardware exists or under initializations ? */
1693 if ((slp->sl_flags & (HW_INACTIVE | HW_INITIALIZING)) != 0)
1694 return;
1695
1696 /* check hardware power up ? */
1697 if ((slp->sl_flags & HW_POWERCTRL) != 0)
1698 {
1699 slp->sl_active ++;
1700 if (slp->sl_flags & (HW_POWDOWN | HW_RESUME))
1701 {
1702 if (scsi_low_resume(slp) == EJUSTRETURN)
1703 return;
1704 }
1705 }
1706
1707 /* setup nexus */
1708 #ifdef SCSI_LOW_DIAGNOSTIC
1709 if (slp->sl_Tnexus || slp->sl_Lnexus || slp->sl_Qnexus)
1710 {
1711 scsi_low_info(slp, NULL, "NEXUS INCOSISTENT");
1712 panic("%s: inconsistent", device_get_nameunit(slp->sl_dev));
1713 }
1714 #endif /* SCSI_LOW_DIAGNOSTIC */
1715
1716 for (cb = TAILQ_FIRST(&slp->sl_start); cb != NULL;
1717 cb = TAILQ_NEXT(cb, ccb_chain))
1718 {
1719 li = cb->li;
1720
1721 if (li->li_disc == 0)
1722 {
1723 goto scsi_low_cmd_start;
1724 }
1725 else if (li->li_nqio > 0)
1726 {
1727 if (li->li_nqio < li->li_maxnqio ||
1728 (cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
1729 goto scsi_low_cmd_start;
1730 }
1731 }
1732 return;
1733
1734 scsi_low_cmd_start:
1735 cb->ccb_flags &= ~CCB_STARTQ;
1736 TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
1737 ti = cb->ti;
1738
1739 /* clear all error flag bits (for restart) */
1740 cb->ccb_error = 0;
1741 cb->ccb_datalen = -1;
1742 cb->ccb_scp.scp_status = ST_UNKNOWN;
1743
1744 /* setup nexus pointer */
1745 slp->sl_Qnexus = cb;
1746 slp->sl_Lnexus = li;
1747 slp->sl_Tnexus = ti;
1748
1749 /* initialize msgsys */
1750 scsi_low_init_msgsys(slp, ti);
1751
1752 /* exec cmd */
1753 if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
1754 {
1755 /* CA state or forced abort */
1756 rv = scsi_low_sense_abort_start(slp, ti, li, cb);
1757 }
1758 else if (li->li_state >= SCSI_LOW_LUN_OK)
1759 {
1760 cb->ccb_flags &= ~CCB_INTERNAL;
1761 rv = scsi_low_ccb_setup_cam(slp, cb);
1762 if (cb->ccb_msgoutflag != 0)
1763 {
1764 scsi_low_ccb_message_exec(slp, cb);
1765 }
1766 }
1767 else
1768 {
1769 cb->ccb_flags |= CCB_INTERNAL;
1770 rv = scsi_low_setup_start(slp, ti, li, cb);
1771 }
1772
1773 /* allocate qtag */
1774 #define SCSI_LOW_QTAG_OK (SCSI_LOW_QTAG | SCSI_LOW_DISC)
1775
1776 if (rv == SCSI_LOW_START_QTAG &&
1777 (li->li_flags & SCSI_LOW_QTAG_OK) == SCSI_LOW_QTAG_OK &&
1778 li->li_maxnqio > 0)
1779 {
1780 u_int qmsg;
1781
1782 scsi_low_activate_qtag(cb);
1783 if ((scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
1784 SCSI_LOW_CMD_ORDERED_QTAG) != 0)
1785 qmsg = SCSI_LOW_MSG_ORDERED_QTAG;
1786 else if ((cb->ccb_flags & CCB_URGENT) != 0)
1787 qmsg = SCSI_LOW_MSG_HEAD_QTAG;
1788 else
1789 qmsg = SCSI_LOW_MSG_SIMPLE_QTAG;
1790 scsi_low_assert_msg(slp, ti, qmsg, 0);
1791 }
1792
1793 /* timeout */
1794 if (cb->ccb_tcmax < SCSI_LOW_MIN_TOUT)
1795 cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
1796 cb->ccb_tc = cb->ccb_tcmax;
1797
1798 /* setup saved scsi data pointer */
1799 cb->ccb_sscp = cb->ccb_scp;
1800
1801 /* setup current scsi pointer */
1802 slp->sl_scp = cb->ccb_sscp;
1803 slp->sl_error = cb->ccb_error;
1804
1805 /* assert always an identify msg */
1806 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_IDENTIFY, 0);
1807
1808 /* debug section */
1809 #ifdef SCSI_LOW_DIAGNOSTIC
1810 scsi_low_msg_log_init(&ti->ti_log_msgin);
1811 scsi_low_msg_log_init(&ti->ti_log_msgout);
1812 #endif /* SCSI_LOW_DIAGNOSTIC */
1813
1814 /* selection start */
1815 slp->sl_selid = cb;
1816 rv = ((*slp->sl_funcs->scsi_low_start_bus) (slp, cb));
1817 if (rv == SCSI_LOW_START_OK)
1818 {
1819 #ifdef SCSI_LOW_STATICS
1820 scsi_low_statics.nexus_win ++;
1821 #endif /* SCSI_LOW_STATICS */
1822 return;
1823 }
1824
1825 scsi_low_arbit_fail(slp, cb);
1826 #ifdef SCSI_LOW_STATICS
1827 scsi_low_statics.nexus_fail ++;
1828 #endif /* SCSI_LOW_STATICS */
1829 }
1830
1831 void
scsi_low_arbit_fail(slp,cb)1832 scsi_low_arbit_fail(slp, cb)
1833 struct scsi_low_softc *slp;
1834 struct slccb *cb;
1835 {
1836 struct targ_info *ti = cb->ti;
1837
1838 scsi_low_deactivate_qtag(cb);
1839 scsi_low_ccb_message_retry(cb);
1840 cb->ccb_flags |= CCB_STARTQ;
1841 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1842
1843 scsi_low_bus_release(slp, ti);
1844
1845 cb->ccb_selrcnt ++;
1846 if (slp->sl_disc == 0)
1847 {
1848 #ifdef SCSI_LOW_DIAGNOSTIC
1849 device_printf(slp->sl_dev, "try selection again\n");
1850 #endif /* SCSI_LOW_DIAGNOSTIC */
1851 slp->sl_retry_sel = 1;
1852 }
1853 }
1854
1855 static void
scsi_low_bus_release(slp,ti)1856 scsi_low_bus_release(slp, ti)
1857 struct scsi_low_softc *slp;
1858 struct targ_info *ti;
1859 {
1860
1861 if (ti->ti_disc > 0)
1862 {
1863 SCSI_LOW_SETUP_PHASE(ti, PH_DISC);
1864 }
1865 else
1866 {
1867 SCSI_LOW_SETUP_PHASE(ti, PH_NULL);
1868 }
1869
1870 /* clear all nexus pointer */
1871 slp->sl_Qnexus = NULL;
1872 slp->sl_Lnexus = NULL;
1873 slp->sl_Tnexus = NULL;
1874
1875 /* clear selection assert */
1876 slp->sl_selid = NULL;
1877
1878 /* clear nexus data */
1879 slp->sl_scp.scp_direction = SCSI_LOW_RWUNK;
1880
1881 /* clear phase change counter */
1882 slp->sl_ph_count = 0;
1883 }
1884
1885 static int
scsi_low_setup_done(slp,cb)1886 scsi_low_setup_done(slp, cb)
1887 struct scsi_low_softc *slp;
1888 struct slccb *cb;
1889 {
1890 struct targ_info *ti;
1891 struct lun_info *li;
1892
1893 ti = cb->ti;
1894 li = cb->li;
1895
1896 if (cb->ccb_rcnt >= slp->sl_max_retry)
1897 {
1898 cb->ccb_error |= ABORTIO;
1899 return SCSI_LOW_DONE_COMPLETE;
1900 }
1901
1902 /* XXX: special huck for selection timeout */
1903 if (li->li_state == SCSI_LOW_LUN_SLEEP &&
1904 (cb->ccb_error & SELTIMEOUTIO) != 0)
1905 {
1906 cb->ccb_error |= ABORTIO;
1907 return SCSI_LOW_DONE_COMPLETE;
1908 }
1909
1910 switch(li->li_state)
1911 {
1912 case SCSI_LOW_LUN_INQ:
1913 if (cb->ccb_error != 0)
1914 {
1915 li->li_diskflags &=
1916 ~(SCSI_LOW_DISK_LINK | SCSI_LOW_DISK_QTAG);
1917 if (li->li_lun > 0)
1918 goto resume;
1919 ti->ti_diskflags &=
1920 ~(SCSI_LOW_DISK_SYNC | SCSI_LOW_DISK_WIDE);
1921 }
1922 else if ((li->li_inq.sd_version & 7) >= 2 ||
1923 (li->li_inq.sd_len >= 4))
1924 {
1925 if ((li->li_inq.sd_support & 0x2) == 0)
1926 li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
1927 if ((li->li_inq.sd_support & 0x8) == 0)
1928 li->li_diskflags &= ~SCSI_LOW_DISK_LINK;
1929 if (li->li_lun > 0)
1930 goto resume;
1931 if ((li->li_inq.sd_support & 0x10) == 0)
1932 ti->ti_diskflags &= ~SCSI_LOW_DISK_SYNC;
1933 if ((li->li_inq.sd_support & 0x20) == 0)
1934 ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE_16;
1935 if ((li->li_inq.sd_support & 0x40) == 0)
1936 ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE_32;
1937 }
1938 else
1939 {
1940 li->li_diskflags &=
1941 ~(SCSI_LOW_DISK_QTAG | SCSI_LOW_DISK_LINK);
1942 if (li->li_lun > 0)
1943 goto resume;
1944 ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE;
1945 }
1946 ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_DISK_VALID;
1947 resume:
1948 scsi_low_calcf_target(ti);
1949 scsi_low_calcf_lun(li);
1950 break;
1951
1952 case SCSI_LOW_LUN_MODEQ:
1953 if (cb->ccb_error != 0)
1954 {
1955 if (cb->ccb_error & SENSEIO)
1956 {
1957 #ifdef SCSI_LOW_DEBUG
1958 if (scsi_low_debug & SCSI_LOW_DEBUG_SENSE)
1959 {
1960 int error_code, sense_key, asc, ascq;
1961
1962 scsi_extract_sense(&cb->ccb_sense,
1963 &error_code,
1964 &sense_key,
1965 &asc,
1966 &ascq);
1967 printf("SENSE: [%x][%x][%x][%x]\n",
1968 error_code, sense_key, asc,
1969 ascq);
1970 }
1971 #endif /* SCSI_LOW_DEBUG */
1972 }
1973 else
1974 {
1975 li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
1976 }
1977 }
1978 else if ((li->li_sms.sms_cmp.cmp_page & 0x3f) == 0x0a)
1979 {
1980 if (li->li_sms.sms_cmp.cmp_qc & 0x02)
1981 li->li_qflags |= SCSI_LOW_QFLAG_CA_QCLEAR;
1982 else
1983 li->li_qflags &= ~SCSI_LOW_QFLAG_CA_QCLEAR;
1984 if ((li->li_sms.sms_cmp.cmp_qc & 0x01) != 0)
1985 li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
1986 }
1987 li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_DISK_VALID;
1988 scsi_low_calcf_lun(li);
1989 break;
1990
1991 default:
1992 break;
1993 }
1994
1995 li->li_state ++;
1996 if (li->li_state == SCSI_LOW_LUN_OK)
1997 {
1998 scsi_low_calcf_target(ti);
1999 scsi_low_calcf_lun(li);
2000 if (li->li_flags_valid == SCSI_LOW_LUN_FLAGS_ALL_VALID &&
2001 (slp->sl_show_result & SHOW_CALCF_RES) != 0)
2002 {
2003 scsi_low_calcf_show(li);
2004 }
2005 }
2006
2007 cb->ccb_rcnt --;
2008 return SCSI_LOW_DONE_RETRY;
2009 }
2010
2011 static int
scsi_low_done(slp,cb)2012 scsi_low_done(slp, cb)
2013 struct scsi_low_softc *slp;
2014 struct slccb *cb;
2015 {
2016 int rv;
2017
2018 if (cb->ccb_error == 0)
2019 {
2020 if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
2021 {
2022 #ifdef SCSI_LOW_QCLEAR_AFTER_CA
2023 /* XXX:
2024 * SCSI-2 draft suggests
2025 * page 0x0a QErr bit determins if
2026 * the target aborts or continues
2027 * the queueing io's after CA state resolved.
2028 * However many targets seem not to support
2029 * the page 0x0a. Thus we should manually clear the
2030 * queuing io's after CA state.
2031 */
2032 if ((cb->ccb_flags & CCB_CLEARQ) == 0)
2033 {
2034 cb->ccb_rcnt --;
2035 cb->ccb_flags |= CCB_CLEARQ;
2036 goto retry;
2037 }
2038 #endif /* SCSI_LOW_QCLEAR_AFTER_CA */
2039
2040 if ((cb->ccb_flags & CCB_SENSE) != 0)
2041 cb->ccb_error |= (SENSEIO | ABORTIO);
2042 cb->ccb_flags &= ~(CCB_SENSE | CCB_CLEARQ);
2043 }
2044 else switch (cb->ccb_sscp.scp_status)
2045 {
2046 case ST_GOOD:
2047 case ST_MET:
2048 case ST_INTERGOOD:
2049 case ST_INTERMET:
2050 if (cb->ccb_datalen == 0 ||
2051 cb->ccb_scp.scp_datalen == 0)
2052 break;
2053
2054 if (cb->ccb_scp.scp_cmdlen > 0 &&
2055 (scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
2056 SCSI_LOW_CMD_RESIDUAL_CHK) == 0)
2057 break;
2058
2059 cb->ccb_error |= PDMAERR;
2060 break;
2061
2062 case ST_BUSY:
2063 case ST_QUEFULL:
2064 cb->ccb_error |= (BUSYERR | STATERR);
2065 break;
2066
2067 case ST_CONFLICT:
2068 cb->ccb_error |= (STATERR | ABORTIO);
2069 break;
2070
2071 case ST_CHKCOND:
2072 case ST_CMDTERM:
2073 if (cb->ccb_flags & (CCB_AUTOSENSE | CCB_INTERNAL))
2074 {
2075 cb->ccb_rcnt --;
2076 cb->ccb_flags |= CCB_SENSE;
2077 goto retry;
2078 }
2079 cb->ccb_error |= (UACAERR | STATERR | ABORTIO);
2080 break;
2081
2082 case ST_UNKNOWN:
2083 default:
2084 cb->ccb_error |= FATALIO;
2085 break;
2086 }
2087 }
2088 else
2089 {
2090 if (cb->ccb_flags & CCB_SENSE)
2091 {
2092 cb->ccb_error |= (SENSEERR | ABORTIO);
2093 }
2094 cb->ccb_flags &= ~(CCB_CLEARQ | CCB_SENSE);
2095 }
2096
2097 /* internal ccb */
2098 if ((cb->ccb_flags & CCB_INTERNAL) != 0)
2099 {
2100 if (scsi_low_setup_done(slp, cb) == SCSI_LOW_DONE_RETRY)
2101 goto retry;
2102 }
2103
2104 /* check a ccb msgout flag */
2105 if (cb->ccb_omsgoutflag != 0)
2106 {
2107 #define SCSI_LOW_MSG_ABORT_OK (SCSI_LOW_MSG_ABORT | \
2108 SCSI_LOW_MSG_ABORT_QTAG | \
2109 SCSI_LOW_MSG_CLEAR_QTAG | \
2110 SCSI_LOW_MSG_TERMIO)
2111
2112 if ((cb->ccb_omsgoutflag & SCSI_LOW_MSG_ABORT_OK) != 0)
2113 {
2114 cb->ccb_error |= ABORTIO;
2115 }
2116 }
2117
2118 /* call OS depend done */
2119 if (cb->osdep != NULL)
2120 {
2121 rv = scsi_low_done_cam(slp, cb);
2122 if (rv == EJUSTRETURN)
2123 goto retry;
2124 }
2125 else if (cb->ccb_error != 0)
2126 {
2127 if (cb->ccb_rcnt >= slp->sl_max_retry)
2128 cb->ccb_error |= ABORTIO;
2129
2130 if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
2131 (cb->ccb_error & ABORTIO) == 0)
2132 goto retry;
2133 }
2134
2135 /* free our target */
2136 #ifdef SCSI_LOW_DEBUG
2137 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
2138 {
2139 printf(">> SCSI_LOW_DONE_COMPLETE ===============\n");
2140 scsi_low_print(slp, NULL);
2141 }
2142 #endif /* SCSI_LOW_DEBUG */
2143
2144 scsi_low_deactivate_qtag(cb);
2145 scsi_low_dealloc_qtag(cb);
2146 scsi_low_free_ccb(cb);
2147 slp->sl_nio --;
2148 return SCSI_LOW_DONE_COMPLETE;
2149
2150 retry:
2151 #ifdef SCSI_LOW_DEBUG
2152 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
2153 {
2154 printf("** SCSI_LOW_DONE_RETRY ===============\n");
2155 scsi_low_print(slp, NULL);
2156 }
2157 #endif /* SCSI_LOW_DEBUG */
2158
2159 cb->ccb_rcnt ++;
2160 scsi_low_deactivate_qtag(cb);
2161 scsi_low_ccb_message_retry(cb);
2162 return SCSI_LOW_DONE_RETRY;
2163 }
2164
2165 /**************************************************************
2166 * Reset
2167 **************************************************************/
2168 static void
scsi_low_reset_nexus_target(slp,ti,fdone)2169 scsi_low_reset_nexus_target(slp, ti, fdone)
2170 struct scsi_low_softc *slp;
2171 struct targ_info *ti;
2172 int fdone;
2173 {
2174 struct lun_info *li;
2175
2176 for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
2177 li = LIST_NEXT(li, lun_chain))
2178 {
2179 scsi_low_reset_nexus_lun(slp, li, fdone);
2180 li->li_state = SCSI_LOW_LUN_SLEEP;
2181 li->li_maxnqio = 0;
2182 }
2183
2184 ti->ti_disc = 0;
2185 ti->ti_setup_msg = 0;
2186 ti->ti_setup_msg_done = 0;
2187
2188 ti->ti_osynch.offset = ti->ti_osynch.period = 0;
2189 ti->ti_owidth = SCSI_LOW_BUS_WIDTH_8;
2190
2191 ti->ti_diskflags = SCSI_LOW_DISK_TFLAGS;
2192 ti->ti_flags_valid &= ~SCSI_LOW_TARG_FLAGS_DISK_VALID;
2193
2194 if (slp->sl_funcs->scsi_low_targ_init != NULL)
2195 {
2196 ((*slp->sl_funcs->scsi_low_targ_init)
2197 (slp, ti, SCSI_LOW_INFO_REVOKE));
2198 }
2199 scsi_low_calcf_target(ti);
2200
2201 for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
2202 li = LIST_NEXT(li, lun_chain))
2203 {
2204 li->li_flags = 0;
2205
2206 li->li_diskflags = SCSI_LOW_DISK_LFLAGS;
2207 li->li_flags_valid &= ~SCSI_LOW_LUN_FLAGS_DISK_VALID;
2208
2209 if (slp->sl_funcs->scsi_low_lun_init != NULL)
2210 {
2211 ((*slp->sl_funcs->scsi_low_lun_init)
2212 (slp, ti, li, SCSI_LOW_INFO_REVOKE));
2213 }
2214 scsi_low_calcf_lun(li);
2215 }
2216 }
2217
2218 static void
scsi_low_reset_nexus(slp,fdone)2219 scsi_low_reset_nexus(slp, fdone)
2220 struct scsi_low_softc *slp;
2221 int fdone;
2222 {
2223 struct targ_info *ti;
2224 struct slccb *cb, *topcb;
2225
2226 if ((cb = slp->sl_Qnexus) != NULL)
2227 {
2228 topcb = scsi_low_revoke_ccb(slp, cb, fdone);
2229 }
2230 else
2231 {
2232 topcb = NULL;
2233 }
2234
2235 for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
2236 ti = TAILQ_NEXT(ti, ti_chain))
2237 {
2238 scsi_low_reset_nexus_target(slp, ti, fdone);
2239 scsi_low_bus_release(slp, ti);
2240 scsi_low_init_msgsys(slp, ti);
2241 }
2242
2243 if (topcb != NULL)
2244 {
2245 topcb->ccb_flags |= CCB_STARTQ;
2246 TAILQ_INSERT_HEAD(&slp->sl_start, topcb, ccb_chain);
2247 }
2248
2249 slp->sl_disc = 0;
2250 slp->sl_retry_sel = 0;
2251 slp->sl_flags &= ~HW_PDMASTART;
2252 }
2253
2254 /* misc */
2255 static int tw_pos;
2256 static char tw_chars[] = "|/-\\";
2257 #define TWIDDLEWAIT 10000
2258
2259 static void
scsi_low_twiddle_wait(void)2260 scsi_low_twiddle_wait(void)
2261 {
2262
2263 cnputc('\b');
2264 cnputc(tw_chars[tw_pos++]);
2265 tw_pos %= (sizeof(tw_chars) - 1);
2266 DELAY(TWIDDLEWAIT);
2267 }
2268
2269 void
scsi_low_bus_reset(slp)2270 scsi_low_bus_reset(slp)
2271 struct scsi_low_softc *slp;
2272 {
2273 int i;
2274
2275 (*slp->sl_funcs->scsi_low_bus_reset) (slp);
2276
2277 device_printf(slp->sl_dev, "try to reset scsi bus ");
2278 for (i = 0; i <= SCSI2_RESET_DELAY / TWIDDLEWAIT ; i++)
2279 scsi_low_twiddle_wait();
2280 cnputc('\b');
2281 printf("\n");
2282 }
2283
2284 int
scsi_low_restart(slp,flags,s)2285 scsi_low_restart(slp, flags, s)
2286 struct scsi_low_softc *slp;
2287 int flags;
2288 u_char *s;
2289 {
2290 int error;
2291
2292 if (s != NULL)
2293 device_printf(slp->sl_dev, "scsi bus restart. reason: %s\n", s);
2294
2295 if ((error = scsi_low_init(slp, flags)) != 0)
2296 return error;
2297
2298 scsi_low_start(slp);
2299 return 0;
2300 }
2301
2302 /**************************************************************
2303 * disconnect and reselect
2304 **************************************************************/
2305 #define MSGCMD_LUN(msg) (msg & 0x07)
2306
2307 static struct slccb *
scsi_low_establish_ccb(ti,li,tag)2308 scsi_low_establish_ccb(ti, li, tag)
2309 struct targ_info *ti;
2310 struct lun_info *li;
2311 scsi_low_tag_t tag;
2312 {
2313 struct scsi_low_softc *slp = ti->ti_sc;
2314 struct slccb *cb;
2315
2316 if (li == NULL)
2317 return NULL;
2318
2319 cb = TAILQ_FIRST(&li->li_discq);
2320 for ( ; cb != NULL; cb = TAILQ_NEXT(cb, ccb_chain))
2321 if (cb->ccb_tag == tag)
2322 goto found;
2323 return cb;
2324
2325 /*
2326 * establish our ccb nexus
2327 */
2328 found:
2329 #ifdef SCSI_LOW_DEBUG
2330 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id) != 0)
2331 {
2332 device_printf(slp->sl_dev, "nexus(0x%lx) abort check start\n",
2333 (u_long) cb);
2334 cb->ccb_flags |= (CCB_NORETRY | CCB_SILENT);
2335 scsi_low_revoke_ccb(slp, cb, 1);
2336 return NULL;
2337 }
2338
2339 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id) != 0)
2340 {
2341 if (cb->ccb_omsgoutflag == 0)
2342 scsi_low_ccb_message_assert(cb, SCSI_LOW_MSG_NOOP);
2343 }
2344 #endif /* SCSI_LOW_DEBUG */
2345
2346 TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
2347 cb->ccb_flags &= ~CCB_DISCQ;
2348 slp->sl_Qnexus = cb;
2349
2350 slp->sl_scp = cb->ccb_sscp;
2351 slp->sl_error |= cb->ccb_error;
2352
2353 slp->sl_disc --;
2354 ti->ti_disc --;
2355 li->li_disc --;
2356
2357 /* inform "ccb nexus established" to the host driver */
2358 (*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
2359
2360 /* check msg */
2361 if (cb->ccb_msgoutflag != 0)
2362 {
2363 scsi_low_ccb_message_exec(slp, cb);
2364 }
2365
2366 return cb;
2367 }
2368
2369 struct targ_info *
scsi_low_reselected(slp,targ)2370 scsi_low_reselected(slp, targ)
2371 struct scsi_low_softc *slp;
2372 u_int targ;
2373 {
2374 struct targ_info *ti;
2375 struct slccb *cb;
2376 u_char *s;
2377
2378 /*
2379 * Check select vs reselected collision.
2380 */
2381
2382 if ((cb = slp->sl_selid) != NULL)
2383 {
2384 scsi_low_arbit_fail(slp, cb);
2385 #ifdef SCSI_LOW_STATICS
2386 scsi_low_statics.nexus_conflict ++;
2387 #endif /* SCSI_LOW_STATICS */
2388 }
2389
2390 /*
2391 * Check if no current active nexus.
2392 */
2393 if (slp->sl_Tnexus != NULL)
2394 {
2395 s = "host busy";
2396 goto world_restart;
2397 }
2398
2399 /*
2400 * Check a valid target id asserted ?
2401 */
2402 if (targ >= slp->sl_ntargs || targ == slp->sl_hostid)
2403 {
2404 s = "scsi id illegal";
2405 goto world_restart;
2406 }
2407
2408 /*
2409 * Check the target scsi status.
2410 */
2411 ti = slp->sl_ti[targ];
2412 if (ti->ti_phase != PH_DISC && ti->ti_phase != PH_NULL)
2413 {
2414 s = "phase mismatch";
2415 goto world_restart;
2416 }
2417
2418 /*
2419 * Setup init msgsys
2420 */
2421 slp->sl_error = 0;
2422 scsi_low_init_msgsys(slp, ti);
2423
2424 /*
2425 * Establish our target nexus
2426 */
2427 SCSI_LOW_SETUP_PHASE(ti, PH_RESEL);
2428 slp->sl_Tnexus = ti;
2429 #ifdef SCSI_LOW_STATICS
2430 scsi_low_statics.nexus_reselected ++;
2431 #endif /* SCSI_LOW_STATICS */
2432 return ti;
2433
2434 world_restart:
2435 device_printf(slp->sl_dev, "reselect(%x:unknown) %s\n", targ, s);
2436 scsi_low_restart(slp, SCSI_LOW_RESTART_HARD,
2437 "reselect: scsi world confused");
2438 return NULL;
2439 }
2440
2441 /**************************************************************
2442 * cmd out pointer setup
2443 **************************************************************/
2444 int
scsi_low_cmd(slp,ti)2445 scsi_low_cmd(slp, ti)
2446 struct scsi_low_softc *slp;
2447 struct targ_info *ti;
2448 {
2449 struct slccb *cb = slp->sl_Qnexus;
2450
2451 slp->sl_ph_count ++;
2452 if (cb == NULL)
2453 {
2454 /*
2455 * no ccb, abort!
2456 */
2457 slp->sl_scp.scp_cmd = (u_int8_t *) &unit_ready_cmd;
2458 slp->sl_scp.scp_cmdlen = sizeof(unit_ready_cmd);
2459 slp->sl_scp.scp_datalen = 0;
2460 slp->sl_scp.scp_direction = SCSI_LOW_READ;
2461 slp->sl_error |= FATALIO;
2462 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2463 SCSI_LOW_INFO(slp, ti, "CMDOUT: ccb nexus not found");
2464 return EINVAL;
2465 }
2466 else
2467 {
2468 #ifdef SCSI_LOW_DEBUG
2469 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_CMDLNK_CHECK, ti->ti_id))
2470 {
2471 scsi_low_test_cmdlnk(slp, cb);
2472 }
2473 #endif /* SCSI_LOW_DEBUG */
2474 }
2475 return 0;
2476 }
2477
2478 /**************************************************************
2479 * data out pointer setup
2480 **************************************************************/
2481 int
scsi_low_data(slp,ti,bp,direction)2482 scsi_low_data(slp, ti, bp, direction)
2483 struct scsi_low_softc *slp;
2484 struct targ_info *ti;
2485 struct buf **bp;
2486 int direction;
2487 {
2488 struct slccb *cb = slp->sl_Qnexus;
2489
2490 if (cb != NULL && direction == cb->ccb_sscp.scp_direction)
2491 {
2492 *bp = cb->bp;
2493 return 0;
2494 }
2495
2496 slp->sl_error |= (FATALIO | PDMAERR);
2497 slp->sl_scp.scp_datalen = 0;
2498 slp->sl_scp.scp_direction = direction;
2499 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2500 if (ti->ti_ophase != ti->ti_phase)
2501 {
2502 char *s;
2503
2504 if (cb == NULL)
2505 s = "DATA PHASE: ccb nexus not found";
2506 else
2507 s = "DATA PHASE: xfer direction mismatch";
2508 SCSI_LOW_INFO(slp, ti, s);
2509 }
2510
2511 *bp = NULL;
2512 return EINVAL;
2513 }
2514
2515 /**************************************************************
2516 * MSG_SYS
2517 **************************************************************/
2518 #define MSGINPTR_CLR(ti) {(ti)->ti_msginptr = 0; (ti)->ti_msginlen = 0;}
2519 #define MSGIN_PERIOD(ti) ((ti)->ti_msgin[3])
2520 #define MSGIN_OFFSET(ti) ((ti)->ti_msgin[4])
2521 #define MSGIN_WIDTHP(ti) ((ti)->ti_msgin[3])
2522 #define MSGIN_DATA_LAST 0x30
2523
2524 static int scsi_low_errfunc_synch(struct scsi_low_softc *, u_int);
2525 static int scsi_low_errfunc_wide(struct scsi_low_softc *, u_int);
2526 static int scsi_low_errfunc_identify(struct scsi_low_softc *, u_int);
2527 static int scsi_low_errfunc_qtag(struct scsi_low_softc *, u_int);
2528
2529 static int scsi_low_msgfunc_synch(struct scsi_low_softc *);
2530 static int scsi_low_msgfunc_wide(struct scsi_low_softc *);
2531 static int scsi_low_msgfunc_identify(struct scsi_low_softc *);
2532 static int scsi_low_msgfunc_abort(struct scsi_low_softc *);
2533 static int scsi_low_msgfunc_qabort(struct scsi_low_softc *);
2534 static int scsi_low_msgfunc_qtag(struct scsi_low_softc *);
2535 static int scsi_low_msgfunc_reset(struct scsi_low_softc *);
2536
2537 struct scsi_low_msgout_data {
2538 u_int md_flags;
2539 u_int8_t md_msg;
2540 int (*md_msgfunc)(struct scsi_low_softc *);
2541 int (*md_errfunc)(struct scsi_low_softc *, u_int);
2542 #define MSG_RELEASE_ATN 0x0001
2543 u_int md_condition;
2544 };
2545
2546 struct scsi_low_msgout_data scsi_low_msgout_data[] = {
2547 /* 0 */ {SCSI_LOW_MSG_RESET, MSG_RESET, scsi_low_msgfunc_reset, NULL, MSG_RELEASE_ATN},
2548 /* 1 */ {SCSI_LOW_MSG_REJECT, MSG_REJECT, NULL, NULL, MSG_RELEASE_ATN},
2549 /* 2 */ {SCSI_LOW_MSG_PARITY, MSG_PARITY, NULL, NULL, MSG_RELEASE_ATN},
2550 /* 3 */ {SCSI_LOW_MSG_ERROR, MSG_I_ERROR, NULL, NULL, MSG_RELEASE_ATN},
2551 /* 4 */ {SCSI_LOW_MSG_IDENTIFY, MSG_IDENTIFY, scsi_low_msgfunc_identify, scsi_low_errfunc_identify, 0},
2552 /* 5 */ {SCSI_LOW_MSG_ABORT, MSG_ABORT, scsi_low_msgfunc_abort, NULL, MSG_RELEASE_ATN},
2553 /* 6 */ {SCSI_LOW_MSG_TERMIO, MSG_TERM_IO, NULL, NULL, MSG_RELEASE_ATN},
2554 /* 7 */ {SCSI_LOW_MSG_SIMPLE_QTAG, MSG_SIMPLE_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
2555 /* 8 */ {SCSI_LOW_MSG_ORDERED_QTAG, MSG_ORDERED_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
2556 /* 9 */{SCSI_LOW_MSG_HEAD_QTAG, MSG_HEAD_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
2557 /* 10 */ {SCSI_LOW_MSG_ABORT_QTAG, MSG_ABORT_QTAG, scsi_low_msgfunc_qabort, NULL, MSG_RELEASE_ATN},
2558 /* 11 */ {SCSI_LOW_MSG_CLEAR_QTAG, MSG_CLEAR_QTAG, scsi_low_msgfunc_abort, NULL, MSG_RELEASE_ATN},
2559 /* 12 */{SCSI_LOW_MSG_WIDE, MSG_EXTEND, scsi_low_msgfunc_wide, scsi_low_errfunc_wide, MSG_RELEASE_ATN},
2560 /* 13 */{SCSI_LOW_MSG_SYNCH, MSG_EXTEND, scsi_low_msgfunc_synch, scsi_low_errfunc_synch, MSG_RELEASE_ATN},
2561 /* 14 */{SCSI_LOW_MSG_NOOP, MSG_NOOP, NULL, NULL, MSG_RELEASE_ATN},
2562 /* 15 */{SCSI_LOW_MSG_ALL, 0},
2563 };
2564
2565 static int scsi_low_msginfunc_ext(struct scsi_low_softc *);
2566 static int scsi_low_synch(struct scsi_low_softc *);
2567 static int scsi_low_wide(struct scsi_low_softc *);
2568 static int scsi_low_msginfunc_msg_reject(struct scsi_low_softc *);
2569 static int scsi_low_msginfunc_rejop(struct scsi_low_softc *);
2570 static int scsi_low_msginfunc_rp(struct scsi_low_softc *);
2571 static int scsi_low_msginfunc_sdp(struct scsi_low_softc *);
2572 static int scsi_low_msginfunc_disc(struct scsi_low_softc *);
2573 static int scsi_low_msginfunc_cc(struct scsi_low_softc *);
2574 static int scsi_low_msginfunc_lcc(struct scsi_low_softc *);
2575 static int scsi_low_msginfunc_parity(struct scsi_low_softc *);
2576 static int scsi_low_msginfunc_noop(struct scsi_low_softc *);
2577 static int scsi_low_msginfunc_simple_qtag(struct scsi_low_softc *);
2578 static int scsi_low_msginfunc_i_wide_residue(struct scsi_low_softc *);
2579
2580 struct scsi_low_msgin_data {
2581 u_int md_len;
2582 int (*md_msgfunc)(struct scsi_low_softc *);
2583 };
2584
2585 struct scsi_low_msgin_data scsi_low_msgin_data[] = {
2586 /* 0 */ {1, scsi_low_msginfunc_cc},
2587 /* 1 */ {2, scsi_low_msginfunc_ext},
2588 /* 2 */ {1, scsi_low_msginfunc_sdp},
2589 /* 3 */ {1, scsi_low_msginfunc_rp},
2590 /* 4 */ {1, scsi_low_msginfunc_disc},
2591 /* 5 */ {1, scsi_low_msginfunc_rejop},
2592 /* 6 */ {1, scsi_low_msginfunc_rejop},
2593 /* 7 */ {1, scsi_low_msginfunc_msg_reject},
2594 /* 8 */ {1, scsi_low_msginfunc_noop},
2595 /* 9 */ {1, scsi_low_msginfunc_parity},
2596 /* a */ {1, scsi_low_msginfunc_lcc},
2597 /* b */ {1, scsi_low_msginfunc_lcc},
2598 /* c */ {1, scsi_low_msginfunc_rejop},
2599 /* d */ {2, scsi_low_msginfunc_rejop},
2600 /* e */ {1, scsi_low_msginfunc_rejop},
2601 /* f */ {1, scsi_low_msginfunc_rejop},
2602 /* 0x10 */ {1, scsi_low_msginfunc_rejop},
2603 /* 0x11 */ {1, scsi_low_msginfunc_rejop},
2604 /* 0x12 */ {1, scsi_low_msginfunc_rejop},
2605 /* 0x13 */ {1, scsi_low_msginfunc_rejop},
2606 /* 0x14 */ {1, scsi_low_msginfunc_rejop},
2607 /* 0x15 */ {1, scsi_low_msginfunc_rejop},
2608 /* 0x16 */ {1, scsi_low_msginfunc_rejop},
2609 /* 0x17 */ {1, scsi_low_msginfunc_rejop},
2610 /* 0x18 */ {1, scsi_low_msginfunc_rejop},
2611 /* 0x19 */ {1, scsi_low_msginfunc_rejop},
2612 /* 0x1a */ {1, scsi_low_msginfunc_rejop},
2613 /* 0x1b */ {1, scsi_low_msginfunc_rejop},
2614 /* 0x1c */ {1, scsi_low_msginfunc_rejop},
2615 /* 0x1d */ {1, scsi_low_msginfunc_rejop},
2616 /* 0x1e */ {1, scsi_low_msginfunc_rejop},
2617 /* 0x1f */ {1, scsi_low_msginfunc_rejop},
2618 /* 0x20 */ {2, scsi_low_msginfunc_simple_qtag},
2619 /* 0x21 */ {2, scsi_low_msginfunc_rejop},
2620 /* 0x22 */ {2, scsi_low_msginfunc_rejop},
2621 /* 0x23 */ {2, scsi_low_msginfunc_i_wide_residue},
2622 /* 0x24 */ {2, scsi_low_msginfunc_rejop},
2623 /* 0x25 */ {2, scsi_low_msginfunc_rejop},
2624 /* 0x26 */ {2, scsi_low_msginfunc_rejop},
2625 /* 0x27 */ {2, scsi_low_msginfunc_rejop},
2626 /* 0x28 */ {2, scsi_low_msginfunc_rejop},
2627 /* 0x29 */ {2, scsi_low_msginfunc_rejop},
2628 /* 0x2a */ {2, scsi_low_msginfunc_rejop},
2629 /* 0x2b */ {2, scsi_low_msginfunc_rejop},
2630 /* 0x2c */ {2, scsi_low_msginfunc_rejop},
2631 /* 0x2d */ {2, scsi_low_msginfunc_rejop},
2632 /* 0x2e */ {2, scsi_low_msginfunc_rejop},
2633 /* 0x2f */ {2, scsi_low_msginfunc_rejop},
2634 /* 0x30 */ {1, scsi_low_msginfunc_rejop} /* default rej op */
2635 };
2636
2637 /**************************************************************
2638 * msgout
2639 **************************************************************/
2640 static int
scsi_low_msgfunc_synch(slp)2641 scsi_low_msgfunc_synch(slp)
2642 struct scsi_low_softc *slp;
2643 {
2644 struct targ_info *ti = slp->sl_Tnexus;
2645 int ptr = ti->ti_msgoutlen;
2646
2647 ti->ti_msgoutstr[ptr + 1] = MSG_EXTEND_SYNCHLEN;
2648 ti->ti_msgoutstr[ptr + 2] = MSG_EXTEND_SYNCHCODE;
2649 ti->ti_msgoutstr[ptr + 3] = ti->ti_maxsynch.period;
2650 ti->ti_msgoutstr[ptr + 4] = ti->ti_maxsynch.offset;
2651 return MSG_EXTEND_SYNCHLEN + 2;
2652 }
2653
2654 static int
scsi_low_msgfunc_wide(slp)2655 scsi_low_msgfunc_wide(slp)
2656 struct scsi_low_softc *slp;
2657 {
2658 struct targ_info *ti = slp->sl_Tnexus;
2659 int ptr = ti->ti_msgoutlen;
2660
2661 ti->ti_msgoutstr[ptr + 1] = MSG_EXTEND_WIDELEN;
2662 ti->ti_msgoutstr[ptr + 2] = MSG_EXTEND_WIDECODE;
2663 ti->ti_msgoutstr[ptr + 3] = ti->ti_width;
2664 return MSG_EXTEND_WIDELEN + 2;
2665 }
2666
2667 static int
scsi_low_msgfunc_identify(slp)2668 scsi_low_msgfunc_identify(slp)
2669 struct scsi_low_softc *slp;
2670 {
2671 struct targ_info *ti = slp->sl_Tnexus;
2672 struct lun_info *li = slp->sl_Lnexus;
2673 struct slccb *cb = slp->sl_Qnexus;
2674 int ptr = ti->ti_msgoutlen;
2675 u_int8_t msg;
2676
2677 msg = MSG_IDENTIFY;
2678 if (cb == NULL)
2679 {
2680 slp->sl_error |= FATALIO;
2681 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2682 SCSI_LOW_INFO(slp, ti, "MSGOUT: nexus unknown");
2683 }
2684 else
2685 {
2686 if (scsi_low_is_disconnect_ok(cb) != 0)
2687 msg |= (MSG_IDENTIFY_DISCPRIV | li->li_lun);
2688 else
2689 msg |= li->li_lun;
2690
2691 if (ti->ti_phase == PH_MSGOUT)
2692 {
2693 (*slp->sl_funcs->scsi_low_establish_lun_nexus) (slp);
2694 if (cb->ccb_tag == SCSI_LOW_UNKTAG)
2695 {
2696 (*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
2697 }
2698 }
2699 }
2700 ti->ti_msgoutstr[ptr + 0] = msg;
2701 return 1;
2702 }
2703
2704 static int
scsi_low_msgfunc_abort(slp)2705 scsi_low_msgfunc_abort(slp)
2706 struct scsi_low_softc *slp;
2707 {
2708
2709 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_ABORT);
2710 return 1;
2711 }
2712
2713 static int
scsi_low_msgfunc_qabort(slp)2714 scsi_low_msgfunc_qabort(slp)
2715 struct scsi_low_softc *slp;
2716 {
2717
2718 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_TERM);
2719 return 1;
2720 }
2721
2722 static int
scsi_low_msgfunc_reset(slp)2723 scsi_low_msgfunc_reset(slp)
2724 struct scsi_low_softc *slp;
2725 {
2726
2727 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_RESET);
2728 return 1;
2729 }
2730
2731 static int
scsi_low_msgfunc_qtag(slp)2732 scsi_low_msgfunc_qtag(slp)
2733 struct scsi_low_softc *slp;
2734 {
2735 struct targ_info *ti = slp->sl_Tnexus;
2736 struct slccb *cb = slp->sl_Qnexus;
2737 int ptr = ti->ti_msgoutlen;
2738
2739 if (cb == NULL || cb->ccb_tag == SCSI_LOW_UNKTAG)
2740 {
2741 ti->ti_msgoutstr[ptr + 0] = MSG_NOOP;
2742 return 1;
2743 }
2744 else
2745 {
2746 ti->ti_msgoutstr[ptr + 1] = (u_int8_t) cb->ccb_tag;
2747 if (ti->ti_phase == PH_MSGOUT)
2748 {
2749 (*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
2750 }
2751 }
2752 return 2;
2753 }
2754
2755 /*
2756 * The following functions are called when targets give unexpected
2757 * responces in msgin (after msgout).
2758 */
2759 static int
scsi_low_errfunc_identify(slp,msgflags)2760 scsi_low_errfunc_identify(slp, msgflags)
2761 struct scsi_low_softc *slp;
2762 u_int msgflags;
2763 {
2764
2765 if (slp->sl_Lnexus != NULL)
2766 {
2767 slp->sl_Lnexus->li_cfgflags &= ~SCSI_LOW_DISC;
2768 scsi_low_calcf_lun(slp->sl_Lnexus);
2769 }
2770 return 0;
2771 }
2772
2773 static int
scsi_low_errfunc_synch(slp,msgflags)2774 scsi_low_errfunc_synch(slp, msgflags)
2775 struct scsi_low_softc *slp;
2776 u_int msgflags;
2777 {
2778 struct targ_info *ti = slp->sl_Tnexus;
2779
2780 MSGIN_PERIOD(ti) = 0;
2781 MSGIN_OFFSET(ti) = 0;
2782 scsi_low_synch(slp);
2783 return 0;
2784 }
2785
2786 static int
scsi_low_errfunc_wide(slp,msgflags)2787 scsi_low_errfunc_wide(slp, msgflags)
2788 struct scsi_low_softc *slp;
2789 u_int msgflags;
2790 {
2791 struct targ_info *ti = slp->sl_Tnexus;
2792
2793 MSGIN_WIDTHP(ti) = 0;
2794 scsi_low_wide(slp);
2795 return 0;
2796 }
2797
2798 static int
scsi_low_errfunc_qtag(slp,msgflags)2799 scsi_low_errfunc_qtag(slp, msgflags)
2800 struct scsi_low_softc *slp;
2801 u_int msgflags;
2802 {
2803
2804 if ((msgflags & SCSI_LOW_MSG_REJECT) != 0)
2805 {
2806 if (slp->sl_Qnexus != NULL)
2807 {
2808 scsi_low_deactivate_qtag(slp->sl_Qnexus);
2809 }
2810 if (slp->sl_Lnexus != NULL)
2811 {
2812 slp->sl_Lnexus->li_cfgflags &= ~SCSI_LOW_QTAG;
2813 scsi_low_calcf_lun(slp->sl_Lnexus);
2814 }
2815 device_printf(slp->sl_dev, "scsi_low: qtag msg rejected\n");
2816 }
2817 return 0;
2818 }
2819
2820
2821 int
scsi_low_msgout(slp,ti,fl)2822 scsi_low_msgout(slp, ti, fl)
2823 struct scsi_low_softc *slp;
2824 struct targ_info *ti;
2825 u_int fl;
2826 {
2827 struct scsi_low_msgout_data *mdp;
2828 int len = 0;
2829
2830 #ifdef SCSI_LOW_DIAGNOSTIC
2831 if (ti != slp->sl_Tnexus)
2832 {
2833 scsi_low_print(slp, NULL);
2834 panic("scsi_low_msgout: Target nexus inconsistent");
2835 }
2836 #endif /* SCSI_LOW_DIAGNOSTIC */
2837
2838 slp->sl_ph_count ++;
2839 if (slp->sl_ph_count > SCSI_LOW_MAX_PHCHANGES)
2840 {
2841 device_printf(slp->sl_dev, "too many phase changes\n");
2842 slp->sl_error |= FATALIO;
2843 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
2844 }
2845
2846 /* STEP I.
2847 * Scsi phase changes.
2848 * Previously msgs asserted are accepted by our target or
2849 * processed by scsi_low_msgin.
2850 * Thus clear all saved informations.
2851 */
2852 if ((fl & SCSI_LOW_MSGOUT_INIT) != 0)
2853 {
2854 ti->ti_omsgflags = 0;
2855 ti->ti_emsgflags = 0;
2856 }
2857 else if (slp->sl_atten == 0)
2858 {
2859 /* STEP II.
2860 * We did not assert attention, however still our target required
2861 * msgs. Resend previous msgs.
2862 */
2863 ti->ti_msgflags |= ti->ti_omsgflags;
2864 ti->ti_omsgflags = 0;
2865 #ifdef SCSI_LOW_DIAGNOSTIC
2866 device_printf(slp->sl_dev, "scsi_low_msgout: retry msgout\n");
2867 #endif /* SCSI_LOW_DIAGNOSTIC */
2868 }
2869
2870 /* STEP III.
2871 * We have no msgs. send MSG_NOOP (OK?)
2872 */
2873 if (scsi_low_is_msgout_continue(ti, 0) == 0)
2874 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_NOOP, 0);
2875
2876 /* STEP IV.
2877 * Process all msgs
2878 */
2879 ti->ti_msgoutlen = 0;
2880 slp->sl_clear_atten = 0;
2881 mdp = &scsi_low_msgout_data[0];
2882 for ( ; mdp->md_flags != SCSI_LOW_MSG_ALL; mdp ++)
2883 {
2884 if ((ti->ti_msgflags & mdp->md_flags) != 0)
2885 {
2886 ti->ti_omsgflags |= mdp->md_flags;
2887 ti->ti_msgflags &= ~mdp->md_flags;
2888 ti->ti_emsgflags = mdp->md_flags;
2889
2890 ti->ti_msgoutstr[ti->ti_msgoutlen] = mdp->md_msg;
2891 if (mdp->md_msgfunc != NULL)
2892 len = (*mdp->md_msgfunc) (slp);
2893 else
2894 len = 1;
2895
2896 #ifdef SCSI_LOW_DIAGNOSTIC
2897 scsi_low_msg_log_write(&ti->ti_log_msgout,
2898 &ti->ti_msgoutstr[ti->ti_msgoutlen], len);
2899 #endif /* SCSI_LOW_DIAGNOSTIC */
2900
2901 ti->ti_msgoutlen += len;
2902 if ((mdp->md_condition & MSG_RELEASE_ATN) != 0)
2903 {
2904 slp->sl_clear_atten = 1;
2905 break;
2906 }
2907
2908 if ((fl & SCSI_LOW_MSGOUT_UNIFY) == 0 ||
2909 ti->ti_msgflags == 0)
2910 break;
2911
2912 if (ti->ti_msgoutlen >= SCSI_LOW_MAX_MSGLEN - 5)
2913 break;
2914 }
2915 }
2916
2917 if (scsi_low_is_msgout_continue(ti, 0) == 0)
2918 slp->sl_clear_atten = 1;
2919
2920 return ti->ti_msgoutlen;
2921 }
2922
2923 /**************************************************************
2924 * msgin
2925 **************************************************************/
2926 static int
scsi_low_msginfunc_noop(slp)2927 scsi_low_msginfunc_noop(slp)
2928 struct scsi_low_softc *slp;
2929 {
2930
2931 return 0;
2932 }
2933
2934 static int
scsi_low_msginfunc_rejop(slp)2935 scsi_low_msginfunc_rejop(slp)
2936 struct scsi_low_softc *slp;
2937 {
2938 struct targ_info *ti = slp->sl_Tnexus;
2939 u_int8_t msg = ti->ti_msgin[0];
2940
2941 device_printf(slp->sl_dev, "MSGIN: msg 0x%x rejected\n", (u_int) msg);
2942 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
2943 return 0;
2944 }
2945
2946 static int
scsi_low_msginfunc_cc(slp)2947 scsi_low_msginfunc_cc(slp)
2948 struct scsi_low_softc *slp;
2949 {
2950 struct lun_info *li;
2951
2952 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_CMDC);
2953
2954 /* validate status */
2955 if (slp->sl_Qnexus == NULL)
2956 return ENOENT;
2957
2958 slp->sl_Qnexus->ccb_sscp.scp_status = slp->sl_scp.scp_status;
2959 li = slp->sl_Lnexus;
2960 switch (slp->sl_scp.scp_status)
2961 {
2962 case ST_GOOD:
2963 li->li_maxnqio = li->li_maxnexus;
2964 break;
2965
2966 case ST_CHKCOND:
2967 li->li_maxnqio = 0;
2968 if (li->li_qflags & SCSI_LOW_QFLAG_CA_QCLEAR)
2969 scsi_low_reset_nexus_lun(slp, li, 0);
2970 break;
2971
2972 case ST_BUSY:
2973 li->li_maxnqio = 0;
2974 break;
2975
2976 case ST_QUEFULL:
2977 if (li->li_maxnexus >= li->li_nqio)
2978 li->li_maxnexus = li->li_nqio - 1;
2979 li->li_maxnqio = li->li_maxnexus;
2980 break;
2981
2982 case ST_INTERGOOD:
2983 case ST_INTERMET:
2984 slp->sl_error |= MSGERR;
2985 break;
2986
2987 default:
2988 break;
2989 }
2990 return 0;
2991 }
2992
2993 static int
scsi_low_msginfunc_lcc(slp)2994 scsi_low_msginfunc_lcc(slp)
2995 struct scsi_low_softc *slp;
2996 {
2997 struct targ_info *ti;
2998 struct lun_info *li;
2999 struct slccb *ncb, *cb;
3000
3001 ti = slp->sl_Tnexus;
3002 li = slp->sl_Lnexus;
3003 if ((cb = slp->sl_Qnexus) == NULL)
3004 goto bad;
3005
3006 cb->ccb_sscp.scp_status = slp->sl_scp.scp_status;
3007 switch (slp->sl_scp.scp_status)
3008 {
3009 case ST_INTERGOOD:
3010 case ST_INTERMET:
3011 li->li_maxnqio = li->li_maxnexus;
3012 break;
3013
3014 default:
3015 slp->sl_error |= MSGERR;
3016 break;
3017 }
3018
3019 if ((li->li_flags & SCSI_LOW_LINK) == 0)
3020 goto bad;
3021
3022 cb->ccb_error |= slp->sl_error;
3023 if (cb->ccb_error != 0)
3024 goto bad;
3025
3026 for (ncb = TAILQ_FIRST(&slp->sl_start); ncb != NULL;
3027 ncb = TAILQ_NEXT(ncb, ccb_chain))
3028 {
3029 if (ncb->li == li)
3030 goto cmd_link_start;
3031 }
3032
3033
3034 bad:
3035 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_LCTERM);
3036 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3037 return EIO;
3038
3039 cmd_link_start:
3040 ncb->ccb_flags &= ~CCB_STARTQ;
3041 TAILQ_REMOVE(&slp->sl_start, ncb, ccb_chain);
3042
3043 scsi_low_dealloc_qtag(ncb);
3044 ncb->ccb_tag = cb->ccb_tag;
3045 ncb->ccb_otag = cb->ccb_otag;
3046 cb->ccb_tag = SCSI_LOW_UNKTAG;
3047 cb->ccb_otag = SCSI_LOW_UNKTAG;
3048 if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
3049 panic("%s: linked ccb retried",
3050 device_get_nameunit(slp->sl_dev));
3051
3052 slp->sl_Qnexus = ncb;
3053 slp->sl_ph_count = 0;
3054
3055 ncb->ccb_error = 0;
3056 ncb->ccb_datalen = -1;
3057 ncb->ccb_scp.scp_status = ST_UNKNOWN;
3058 ncb->ccb_flags &= ~CCB_INTERNAL;
3059
3060 scsi_low_init_msgsys(slp, ti);
3061
3062 scsi_low_ccb_setup_cam(slp, ncb);
3063
3064 if (ncb->ccb_tcmax < SCSI_LOW_MIN_TOUT)
3065 ncb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
3066 ncb->ccb_tc = ncb->ccb_tcmax;
3067
3068 /* setup saved scsi data pointer */
3069 ncb->ccb_sscp = ncb->ccb_scp;
3070 slp->sl_scp = ncb->ccb_sscp;
3071 slp->sl_error = ncb->ccb_error;
3072
3073 #ifdef SCSI_LOW_DIAGNOSTIC
3074 scsi_low_msg_log_init(&ti->ti_log_msgin);
3075 scsi_low_msg_log_init(&ti->ti_log_msgout);
3076 #endif /* SCSI_LOW_DIAGNOSTIC */
3077 return EJUSTRETURN;
3078 }
3079
3080 static int
scsi_low_msginfunc_disc(slp)3081 scsi_low_msginfunc_disc(slp)
3082 struct scsi_low_softc *slp;
3083 {
3084
3085 SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_DISC);
3086 return 0;
3087 }
3088
3089 static int
scsi_low_msginfunc_sdp(slp)3090 scsi_low_msginfunc_sdp(slp)
3091 struct scsi_low_softc *slp;
3092 {
3093 struct slccb *cb = slp->sl_Qnexus;
3094
3095 if (cb != NULL)
3096 {
3097 cb->ccb_sscp.scp_datalen = slp->sl_scp.scp_datalen;
3098 cb->ccb_sscp.scp_data = slp->sl_scp.scp_data;
3099 }
3100 else
3101 scsi_low_assert_msg(slp, slp->sl_Tnexus, SCSI_LOW_MSG_REJECT, 0);
3102 return 0;
3103 }
3104
3105 static int
scsi_low_msginfunc_rp(slp)3106 scsi_low_msginfunc_rp(slp)
3107 struct scsi_low_softc *slp;
3108 {
3109
3110 if (slp->sl_Qnexus != NULL)
3111 slp->sl_scp = slp->sl_Qnexus->ccb_sscp;
3112 else
3113 scsi_low_assert_msg(slp, slp->sl_Tnexus, SCSI_LOW_MSG_REJECT, 0);
3114 return 0;
3115 }
3116
3117 static int
scsi_low_synch(slp)3118 scsi_low_synch(slp)
3119 struct scsi_low_softc *slp;
3120 {
3121 struct targ_info *ti = slp->sl_Tnexus;
3122 u_int period = 0, offset = 0, speed;
3123 u_char *s;
3124 int error;
3125
3126 if ((MSGIN_PERIOD(ti) >= ti->ti_maxsynch.period &&
3127 MSGIN_OFFSET(ti) <= ti->ti_maxsynch.offset) ||
3128 MSGIN_OFFSET(ti) == 0)
3129 {
3130 if ((offset = MSGIN_OFFSET(ti)) != 0)
3131 period = MSGIN_PERIOD(ti);
3132 s = offset ? "synchronous" : "async";
3133 }
3134 else
3135 {
3136 /* XXX:
3137 * Target seems to be brain damaged.
3138 * Force async transfer.
3139 */
3140 ti->ti_maxsynch.period = 0;
3141 ti->ti_maxsynch.offset = 0;
3142 device_printf(slp->sl_dev,
3143 "target brain damaged. async transfer\n");
3144 return EINVAL;
3145 }
3146
3147 ti->ti_maxsynch.period = period;
3148 ti->ti_maxsynch.offset = offset;
3149
3150 error = (*slp->sl_funcs->scsi_low_msg) (slp, ti, SCSI_LOW_MSG_SYNCH);
3151 if (error != 0)
3152 {
3153 /* XXX:
3154 * Current period and offset are not acceptable
3155 * for our adapter.
3156 * The adapter changes max synch and max offset.
3157 */
3158 device_printf(slp->sl_dev,
3159 "synch neg failed. retry synch msg neg ...\n");
3160 return error;
3161 }
3162
3163 ti->ti_osynch = ti->ti_maxsynch;
3164 if (offset > 0)
3165 {
3166 ti->ti_setup_msg_done |= SCSI_LOW_MSG_SYNCH;
3167 }
3168
3169 /* inform data */
3170 if ((slp->sl_show_result & SHOW_SYNCH_NEG) != 0)
3171 {
3172 #ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
3173 struct slccb *cb = slp->sl_Qnexus;
3174
3175 if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
3176 return 0;
3177 #endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
3178
3179 device_printf(slp->sl_dev,
3180 "(%d:*): <%s> offset %d period %dns ",
3181 ti->ti_id, s, offset, period * 4);
3182
3183 if (period != 0)
3184 {
3185 speed = 1000 * 10 / (period * 4);
3186 printf("%d.%d M/s", speed / 10, speed % 10);
3187 }
3188 printf("\n");
3189 }
3190 return 0;
3191 }
3192
3193 static int
scsi_low_wide(slp)3194 scsi_low_wide(slp)
3195 struct scsi_low_softc *slp;
3196 {
3197 struct targ_info *ti = slp->sl_Tnexus;
3198 int error;
3199
3200 ti->ti_width = MSGIN_WIDTHP(ti);
3201 error = (*slp->sl_funcs->scsi_low_msg) (slp, ti, SCSI_LOW_MSG_WIDE);
3202 if (error != 0)
3203 {
3204 /* XXX:
3205 * Current width is not acceptable for our adapter.
3206 * The adapter changes max width.
3207 */
3208 device_printf(slp->sl_dev,
3209 "wide neg failed. retry wide msg neg ...\n");
3210 return error;
3211 }
3212
3213 ti->ti_owidth = ti->ti_width;
3214 if (ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
3215 {
3216 ti->ti_setup_msg_done |=
3217 (SCSI_LOW_MSG_SYNCH | SCSI_LOW_MSG_WIDE);
3218 }
3219
3220 /* inform data */
3221 if ((slp->sl_show_result & SHOW_WIDE_NEG) != 0)
3222 {
3223 #ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
3224 struct slccb *cb = slp->sl_Qnexus;
3225
3226 if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
3227 return 0;
3228 #endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
3229
3230 device_printf(slp->sl_dev, "(%d:*): transfer width %d bits\n",
3231 ti->ti_id, 1 << (3 + ti->ti_width));
3232 }
3233 return 0;
3234 }
3235
3236 static int
scsi_low_msginfunc_simple_qtag(slp)3237 scsi_low_msginfunc_simple_qtag(slp)
3238 struct scsi_low_softc *slp;
3239 {
3240 struct targ_info *ti = slp->sl_Tnexus;
3241 scsi_low_tag_t etag = (scsi_low_tag_t) ti->ti_msgin[1];
3242
3243 if (slp->sl_Qnexus != NULL)
3244 {
3245 if (slp->sl_Qnexus->ccb_tag != etag)
3246 {
3247 slp->sl_error |= FATALIO;
3248 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
3249 SCSI_LOW_INFO(slp, ti, "MSGIN: qtag mismatch");
3250 }
3251 }
3252 else if (scsi_low_establish_ccb(ti, slp->sl_Lnexus, etag) == NULL)
3253 {
3254 #ifdef SCSI_LOW_DEBUG
3255 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id))
3256 return 0;
3257 #endif /* SCSI_LOW_DEBUG */
3258
3259 slp->sl_error |= FATALIO;
3260 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT_QTAG, 0);
3261 SCSI_LOW_INFO(slp, ti, "MSGIN: taged ccb not found");
3262 }
3263 return 0;
3264 }
3265
3266 static int
scsi_low_msginfunc_i_wide_residue(slp)3267 scsi_low_msginfunc_i_wide_residue(slp)
3268 struct scsi_low_softc *slp;
3269 {
3270 struct targ_info *ti = slp->sl_Tnexus;
3271 struct slccb *cb = slp->sl_Qnexus;
3272 int res = (int) ti->ti_msgin[1];
3273
3274 if (cb == NULL || res <= 0 ||
3275 (ti->ti_width == SCSI_LOW_BUS_WIDTH_16 && res > 1) ||
3276 (ti->ti_width == SCSI_LOW_BUS_WIDTH_32 && res > 3))
3277 return EINVAL;
3278
3279 if (slp->sl_scp.scp_datalen + res > cb->ccb_scp.scp_datalen)
3280 return EINVAL;
3281
3282 slp->sl_scp.scp_datalen += res;
3283 slp->sl_scp.scp_data -= res;
3284 scsi_low_data_finish(slp);
3285 return 0;
3286 }
3287
3288 static int
scsi_low_msginfunc_ext(slp)3289 scsi_low_msginfunc_ext(slp)
3290 struct scsi_low_softc *slp;
3291 {
3292 struct slccb *cb = slp->sl_Qnexus;
3293 struct lun_info *li = slp->sl_Lnexus;
3294 struct targ_info *ti = slp->sl_Tnexus;
3295 int count, retry;
3296 u_int32_t *ptr;
3297
3298 if (ti->ti_msginptr == 2)
3299 {
3300 ti->ti_msginlen = ti->ti_msgin[1] + 2;
3301 return 0;
3302 }
3303
3304 switch (MKMSG_EXTEND(ti->ti_msgin[1], ti->ti_msgin[2]))
3305 {
3306 case MKMSG_EXTEND(MSG_EXTEND_MDPLEN, MSG_EXTEND_MDPCODE):
3307 if (cb == NULL)
3308 break;
3309
3310 ptr = (u_int32_t *)(&ti->ti_msgin[3]);
3311 count = (int) htonl((long) (*ptr));
3312 if(slp->sl_scp.scp_datalen - count < 0 ||
3313 slp->sl_scp.scp_datalen - count > cb->ccb_scp.scp_datalen)
3314 break;
3315
3316 slp->sl_scp.scp_datalen -= count;
3317 slp->sl_scp.scp_data += count;
3318 return 0;
3319
3320 case MKMSG_EXTEND(MSG_EXTEND_SYNCHLEN, MSG_EXTEND_SYNCHCODE):
3321 if (li == NULL)
3322 break;
3323
3324 retry = scsi_low_synch(slp);
3325 if (retry != 0 || (ti->ti_emsgflags & SCSI_LOW_MSG_SYNCH) == 0)
3326 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_SYNCH, 0);
3327
3328 #ifdef SCSI_LOW_DEBUG
3329 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id))
3330 {
3331 scsi_low_test_atten(slp, ti, SCSI_LOW_MSG_SYNCH);
3332 }
3333 #endif /* SCSI_LOW_DEBUG */
3334 return 0;
3335
3336 case MKMSG_EXTEND(MSG_EXTEND_WIDELEN, MSG_EXTEND_WIDECODE):
3337 if (li == NULL)
3338 break;
3339
3340 retry = scsi_low_wide(slp);
3341 if (retry != 0 || (ti->ti_emsgflags & SCSI_LOW_MSG_WIDE) == 0)
3342 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_WIDE, 0);
3343
3344 return 0;
3345
3346 default:
3347 break;
3348 }
3349
3350 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3351 return EINVAL;
3352 }
3353
3354 static int
scsi_low_msginfunc_parity(slp)3355 scsi_low_msginfunc_parity(slp)
3356 struct scsi_low_softc *slp;
3357 {
3358 struct targ_info *ti = slp->sl_Tnexus;
3359
3360 /* only I -> T, invalid! */
3361 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3362 return 0;
3363 }
3364
3365 static int
scsi_low_msginfunc_msg_reject(slp)3366 scsi_low_msginfunc_msg_reject(slp)
3367 struct scsi_low_softc *slp;
3368 {
3369 struct targ_info *ti = slp->sl_Tnexus;
3370 struct scsi_low_msgout_data *mdp;
3371 u_int msgflags;
3372
3373 if (ti->ti_emsgflags != 0)
3374 {
3375 device_printf(slp->sl_dev, "msg flags [0x%x] rejected\n",
3376 ti->ti_emsgflags);
3377 msgflags = SCSI_LOW_MSG_REJECT;
3378 mdp = &scsi_low_msgout_data[0];
3379 for ( ; mdp->md_flags != SCSI_LOW_MSG_ALL; mdp ++)
3380 {
3381 if ((ti->ti_emsgflags & mdp->md_flags) != 0)
3382 {
3383 ti->ti_emsgflags &= ~mdp->md_flags;
3384 if (mdp->md_errfunc != NULL)
3385 (*mdp->md_errfunc) (slp, msgflags);
3386 break;
3387 }
3388 }
3389 return 0;
3390 }
3391 else
3392 {
3393 SCSI_LOW_INFO(slp, ti, "MSGIN: rejected msg not found");
3394 slp->sl_error |= MSGERR;
3395 }
3396 return EINVAL;
3397 }
3398
3399 int
scsi_low_msgin(slp,ti,c)3400 scsi_low_msgin(slp, ti, c)
3401 struct scsi_low_softc *slp;
3402 struct targ_info *ti;
3403 u_int c;
3404 {
3405 struct scsi_low_msgin_data *sdp;
3406 struct lun_info *li;
3407 u_int8_t msg;
3408
3409 #ifdef SCSI_LOW_DIAGNOSTIC
3410 if (ti != slp->sl_Tnexus)
3411 {
3412 scsi_low_print(slp, NULL);
3413 panic("scsi_low_msgin: Target nexus inconsistent");
3414 }
3415 #endif /* SCSI_LOW_DIAGNOSTIC */
3416
3417 /*
3418 * Phase changes, clear the pointer.
3419 */
3420 if (ti->ti_ophase != ti->ti_phase)
3421 {
3422 MSGINPTR_CLR(ti);
3423 ti->ti_msgin_parity_error = 0;
3424
3425 slp->sl_ph_count ++;
3426 if (slp->sl_ph_count > SCSI_LOW_MAX_PHCHANGES)
3427 {
3428 device_printf(slp->sl_dev, "too many phase changes\n");
3429 slp->sl_error |= FATALIO;
3430 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
3431 }
3432 }
3433
3434 /*
3435 * Store a current messages byte into buffer and
3436 * wait for the completion of the current msg.
3437 */
3438 ti->ti_msgin[ti->ti_msginptr ++] = (u_int8_t) c;
3439 if (ti->ti_msginptr >= SCSI_LOW_MAX_MSGLEN)
3440 {
3441 ti->ti_msginptr = SCSI_LOW_MAX_MSGLEN - 1;
3442 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
3443 }
3444
3445 /*
3446 * Check parity errors.
3447 */
3448 if ((c & SCSI_LOW_DATA_PE) != 0)
3449 {
3450 ti->ti_msgin_parity_error ++;
3451 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_PARITY, 0);
3452 goto out;
3453 }
3454
3455 if (ti->ti_msgin_parity_error != 0)
3456 goto out;
3457
3458 /*
3459 * Calculate messages length.
3460 */
3461 msg = ti->ti_msgin[0];
3462 if (msg < MSGIN_DATA_LAST)
3463 sdp = &scsi_low_msgin_data[msg];
3464 else
3465 sdp = &scsi_low_msgin_data[MSGIN_DATA_LAST];
3466
3467 if (ti->ti_msginlen == 0)
3468 {
3469 ti->ti_msginlen = sdp->md_len;
3470 }
3471
3472 /*
3473 * Check comletion.
3474 */
3475 if (ti->ti_msginptr < ti->ti_msginlen)
3476 return EJUSTRETURN;
3477
3478 /*
3479 * Do process.
3480 */
3481 if ((msg & MSG_IDENTIFY) == 0)
3482 {
3483 if (((*sdp->md_msgfunc) (slp)) == EJUSTRETURN)
3484 return EJUSTRETURN;
3485 }
3486 else
3487 {
3488 li = slp->sl_Lnexus;
3489 if (li == NULL)
3490 {
3491 li = scsi_low_alloc_li(ti, MSGCMD_LUN(msg), 0);
3492 if (li == NULL)
3493 goto badlun;
3494 slp->sl_Lnexus = li;
3495 (*slp->sl_funcs->scsi_low_establish_lun_nexus) (slp);
3496 }
3497 else
3498 {
3499 if (MSGCMD_LUN(msg) != li->li_lun)
3500 goto badlun;
3501 }
3502
3503 if (slp->sl_Qnexus == NULL && li->li_nqio == 0)
3504 {
3505 if (!scsi_low_establish_ccb(ti, li, SCSI_LOW_UNKTAG))
3506 {
3507 #ifdef SCSI_LOW_DEBUG
3508 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id) != 0)
3509 {
3510 goto out;
3511 }
3512 #endif /* SCSI_LOW_DEBUG */
3513 goto badlun;
3514 }
3515 }
3516 }
3517 goto out;
3518
3519 /*
3520 * Msg process completed, reset msgin pointer and assert ATN if desired.
3521 */
3522 badlun:
3523 slp->sl_error |= FATALIO;
3524 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
3525 SCSI_LOW_INFO(slp, ti, "MSGIN: identify wrong");
3526
3527 out:
3528 if (ti->ti_msginptr < ti->ti_msginlen)
3529 return EJUSTRETURN;
3530
3531 #ifdef SCSI_LOW_DIAGNOSTIC
3532 scsi_low_msg_log_write(&ti->ti_log_msgin,
3533 &ti->ti_msgin[0], ti->ti_msginlen);
3534 #endif /* SCSI_LOW_DIAGNOSTIC */
3535
3536 MSGINPTR_CLR(ti);
3537 return 0;
3538 }
3539
3540 /**********************************************************
3541 * disconnect
3542 **********************************************************/
3543 int
scsi_low_disconnected(slp,ti)3544 scsi_low_disconnected(slp, ti)
3545 struct scsi_low_softc *slp;
3546 struct targ_info *ti;
3547 {
3548 struct slccb *cb = slp->sl_Qnexus;
3549
3550 /* check phase completion */
3551 switch (slp->sl_msgphase)
3552 {
3553 case MSGPH_RESET:
3554 scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
3555 scsi_low_msginfunc_cc(slp);
3556 scsi_low_reset_nexus_target(slp, slp->sl_Tnexus, 0);
3557 goto io_resume;
3558
3559 case MSGPH_ABORT:
3560 scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
3561 scsi_low_msginfunc_cc(slp);
3562 scsi_low_reset_nexus_lun(slp, slp->sl_Lnexus, 0);
3563 goto io_resume;
3564
3565 case MSGPH_TERM:
3566 scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
3567 scsi_low_msginfunc_cc(slp);
3568 goto io_resume;
3569
3570 case MSGPH_DISC:
3571 if (cb != NULL)
3572 {
3573 struct lun_info *li;
3574
3575 li = cb->li;
3576 TAILQ_INSERT_TAIL(&li->li_discq, cb, ccb_chain);
3577 cb->ccb_flags |= CCB_DISCQ;
3578 cb->ccb_error |= slp->sl_error;
3579 li->li_disc ++;
3580 ti->ti_disc ++;
3581 slp->sl_disc ++;
3582 }
3583
3584 #ifdef SCSI_LOW_STATICS
3585 scsi_low_statics.nexus_disconnected ++;
3586 #endif /* SCSI_LOW_STATICS */
3587
3588 #ifdef SCSI_LOW_DEBUG
3589 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DISC, ti->ti_id) != 0)
3590 {
3591 printf("## SCSI_LOW_DISCONNECTED ===============\n");
3592 scsi_low_print(slp, NULL);
3593 }
3594 #endif /* SCSI_LOW_DEBUG */
3595 break;
3596
3597 case MSGPH_NULL:
3598 slp->sl_error |= FATALIO;
3599 if (ti->ti_phase == PH_SELSTART)
3600 slp->sl_error |= SELTIMEOUTIO;
3601 else
3602 slp->sl_error |= UBFERR;
3603 /* fall through */
3604
3605 case MSGPH_LCTERM:
3606 case MSGPH_CMDC:
3607 io_resume:
3608 if (cb == NULL)
3609 break;
3610
3611 #ifdef SCSI_LOW_DEBUG
3612 if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id))
3613 {
3614 if (cb->ccb_omsgoutflag == SCSI_LOW_MSG_NOOP &&
3615 (cb->ccb_msgoutflag != 0 ||
3616 (ti->ti_msgflags & SCSI_LOW_MSG_NOOP)))
3617 {
3618 scsi_low_info(slp, ti, "ATTEN CHECK FAILED");
3619 }
3620 }
3621 #endif /* SCSI_LOW_DEBUG */
3622
3623 cb->ccb_error |= slp->sl_error;
3624 if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
3625 {
3626 cb->ccb_flags |= CCB_STARTQ;
3627 TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
3628 }
3629 break;
3630 }
3631
3632 scsi_low_bus_release(slp, ti);
3633 scsi_low_start(slp);
3634 return 1;
3635 }
3636
3637 /**********************************************************
3638 * TAG operations
3639 **********************************************************/
3640 static int
scsi_low_alloc_qtag(cb)3641 scsi_low_alloc_qtag(cb)
3642 struct slccb *cb;
3643 {
3644 struct lun_info *li = cb->li;
3645 scsi_low_tag_t etag;
3646
3647 if (cb->ccb_otag != SCSI_LOW_UNKTAG)
3648 return 0;
3649
3650 #ifndef SCSI_LOW_ALT_QTAG_ALLOCATE
3651 etag = ffs(li->li_qtagbits);
3652 if (etag == 0)
3653 return ENOSPC;
3654
3655 li->li_qtagbits &= ~(1 << (etag - 1));
3656 cb->ccb_otag = etag;
3657 return 0;
3658
3659 #else /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3660 for (etag = li->li_qd ; li->li_qd < SCSI_LOW_MAXNEXUS; li->li_qd ++)
3661 if (li->li_qtagarray[li->li_qd] == 0)
3662 goto found;
3663
3664 for (li->li_qd = 0; li->li_qd < etag; li->li_qd ++)
3665 if (li->li_qtagarray[li->li_qd] == 0)
3666 goto found;
3667
3668 return ENOSPC;
3669
3670 found:
3671 li->li_qtagarray[li->li_qd] ++;
3672 cb->ccb_otag = (li->li_qd ++);
3673 return 0;
3674 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3675 }
3676
3677 static int
scsi_low_dealloc_qtag(cb)3678 scsi_low_dealloc_qtag(cb)
3679 struct slccb *cb;
3680 {
3681 struct lun_info *li = cb->li;
3682 scsi_low_tag_t etag;
3683
3684 if (cb->ccb_otag == SCSI_LOW_UNKTAG)
3685 return 0;
3686
3687 #ifndef SCSI_LOW_ALT_QTAG_ALLOCATE
3688 etag = cb->ccb_otag - 1;
3689 #ifdef SCSI_LOW_DIAGNOSTIC
3690 if (etag >= sizeof(li->li_qtagbits) * NBBY)
3691 panic("scsi_low_dealloc_tag: illegal tag");
3692 #endif /* SCSI_LOW_DIAGNOSTIC */
3693 li->li_qtagbits |= (1 << etag);
3694
3695 #else /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3696 etag = cb->ccb_otag;
3697 #ifdef SCSI_LOW_DIAGNOSTIC
3698 if (etag >= SCSI_LOW_MAXNEXUS)
3699 panic("scsi_low_dealloc_tag: illegal tag");
3700 #endif /* SCSI_LOW_DIAGNOSTIC */
3701 li->li_qtagarray[etag] --;
3702 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
3703
3704 cb->ccb_otag = SCSI_LOW_UNKTAG;
3705 return 0;
3706 }
3707
3708 static struct slccb *
scsi_low_revoke_ccb(slp,cb,fdone)3709 scsi_low_revoke_ccb(slp, cb, fdone)
3710 struct scsi_low_softc *slp;
3711 struct slccb *cb;
3712 int fdone;
3713 {
3714 struct targ_info *ti = cb->ti;
3715 struct lun_info *li = cb->li;
3716
3717 #ifdef SCSI_LOW_DIAGNOSTIC
3718 if ((cb->ccb_flags & (CCB_STARTQ | CCB_DISCQ)) ==
3719 (CCB_STARTQ | CCB_DISCQ))
3720 {
3721 panic("%s: ccb in both queue",
3722 device_get_nameunit(slp->sl_dev));
3723 }
3724 #endif /* SCSI_LOW_DIAGNOSTIC */
3725
3726 if ((cb->ccb_flags & CCB_STARTQ) != 0)
3727 {
3728 TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
3729 }
3730
3731 if ((cb->ccb_flags & CCB_DISCQ) != 0)
3732 {
3733 TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
3734 li->li_disc --;
3735 ti->ti_disc --;
3736 slp->sl_disc --;
3737 }
3738
3739 cb->ccb_flags &= ~(CCB_STARTQ | CCB_DISCQ |
3740 CCB_SENSE | CCB_CLEARQ | CCB_INTERNAL);
3741
3742 if (fdone != 0 &&
3743 (cb->ccb_rcnt ++ >= slp->sl_max_retry ||
3744 (cb->ccb_flags & CCB_NORETRY) != 0))
3745 {
3746 cb->ccb_error |= FATALIO;
3747 cb->ccb_flags &= ~CCB_AUTOSENSE;
3748 if (scsi_low_done(slp, cb) != SCSI_LOW_DONE_COMPLETE)
3749 panic("%s: done ccb retried",
3750 device_get_nameunit(slp->sl_dev));
3751 return NULL;
3752 }
3753 else
3754 {
3755 cb->ccb_error |= PENDINGIO;
3756 scsi_low_deactivate_qtag(cb);
3757 scsi_low_ccb_message_retry(cb);
3758 cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
3759 return cb;
3760 }
3761 }
3762
3763 static void
scsi_low_reset_nexus_lun(slp,li,fdone)3764 scsi_low_reset_nexus_lun(slp, li, fdone)
3765 struct scsi_low_softc *slp;
3766 struct lun_info *li;
3767 int fdone;
3768 {
3769 struct slccb *cb, *ncb, *ecb;
3770
3771 if (li == NULL)
3772 return;
3773
3774 ecb = NULL;
3775 for (cb = TAILQ_FIRST(&li->li_discq); cb != NULL; cb = ncb)
3776 {
3777 ncb = TAILQ_NEXT(cb, ccb_chain);
3778 cb = scsi_low_revoke_ccb(slp, cb, fdone);
3779 if (cb != NULL)
3780 {
3781 /*
3782 * presumely keep ordering of io
3783 */
3784 cb->ccb_flags |= CCB_STARTQ;
3785 if (ecb == NULL)
3786 {
3787 TAILQ_INSERT_HEAD(&slp->sl_start,\
3788 cb, ccb_chain);
3789 }
3790 else
3791 {
3792 TAILQ_INSERT_AFTER(&slp->sl_start,\
3793 ecb, cb, ccb_chain);
3794 }
3795 ecb = cb;
3796 }
3797 }
3798 }
3799
3800 /**************************************************************
3801 * Qurik setup
3802 **************************************************************/
3803 static void
scsi_low_calcf_lun(li)3804 scsi_low_calcf_lun(li)
3805 struct lun_info *li;
3806 {
3807 struct targ_info *ti = li->li_ti;
3808 struct scsi_low_softc *slp = ti->ti_sc;
3809 u_int cfgflags, diskflags;
3810
3811 if (li->li_flags_valid == SCSI_LOW_LUN_FLAGS_ALL_VALID)
3812 cfgflags = li->li_cfgflags;
3813 else
3814 cfgflags = 0;
3815
3816 diskflags = li->li_diskflags & li->li_quirks;
3817
3818 /* disconnect */
3819 li->li_flags &= ~SCSI_LOW_DISC;
3820 if ((slp->sl_cfgflags & CFG_NODISC) == 0 &&
3821 (diskflags & SCSI_LOW_DISK_DISC) != 0 &&
3822 (cfgflags & SCSI_LOW_DISC) != 0)
3823 li->li_flags |= SCSI_LOW_DISC;
3824
3825 /* parity */
3826 li->li_flags |= SCSI_LOW_NOPARITY;
3827 if ((slp->sl_cfgflags & CFG_NOPARITY) == 0 &&
3828 (diskflags & SCSI_LOW_DISK_PARITY) != 0 &&
3829 (cfgflags & SCSI_LOW_NOPARITY) == 0)
3830 li->li_flags &= ~SCSI_LOW_NOPARITY;
3831
3832 /* qtag */
3833 if ((slp->sl_cfgflags & CFG_NOQTAG) == 0 &&
3834 (cfgflags & SCSI_LOW_QTAG) != 0 &&
3835 (diskflags & SCSI_LOW_DISK_QTAG) != 0)
3836 {
3837 li->li_flags |= SCSI_LOW_QTAG;
3838 li->li_maxnexus = SCSI_LOW_MAXNEXUS;
3839 li->li_maxnqio = li->li_maxnexus;
3840 }
3841 else
3842 {
3843 li->li_flags &= ~SCSI_LOW_QTAG;
3844 li->li_maxnexus = 0;
3845 li->li_maxnqio = li->li_maxnexus;
3846 }
3847
3848 /* cmd link */
3849 li->li_flags &= ~SCSI_LOW_LINK;
3850 if ((cfgflags & SCSI_LOW_LINK) != 0 &&
3851 (diskflags & SCSI_LOW_DISK_LINK) != 0)
3852 li->li_flags |= SCSI_LOW_LINK;
3853
3854 /* compatible flags */
3855 li->li_flags &= ~SCSI_LOW_SYNC;
3856 if (ti->ti_maxsynch.offset > 0)
3857 li->li_flags |= SCSI_LOW_SYNC;
3858
3859 #ifdef SCSI_LOW_DEBUG
3860 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_CALCF, ti->ti_id) != 0)
3861 {
3862 scsi_low_calcf_show(li);
3863 }
3864 #endif /* SCSI_LOW_DEBUG */
3865 }
3866
3867 static void
scsi_low_calcf_target(ti)3868 scsi_low_calcf_target(ti)
3869 struct targ_info *ti;
3870 {
3871 struct scsi_low_softc *slp = ti->ti_sc;
3872 u_int offset, period, diskflags;
3873
3874 diskflags = ti->ti_diskflags & ti->ti_quirks;
3875
3876 /* synch */
3877 if ((slp->sl_cfgflags & CFG_ASYNC) == 0 &&
3878 (diskflags & SCSI_LOW_DISK_SYNC) != 0)
3879 {
3880 offset = ti->ti_maxsynch.offset;
3881 period = ti->ti_maxsynch.period;
3882 if (offset == 0 || period == 0)
3883 offset = period = 0;
3884 }
3885 else
3886 {
3887 offset = period = 0;
3888 }
3889
3890 ti->ti_maxsynch.offset = offset;
3891 ti->ti_maxsynch.period = period;
3892
3893 /* wide */
3894 if ((diskflags & SCSI_LOW_DISK_WIDE_32) == 0 &&
3895 ti->ti_width > SCSI_LOW_BUS_WIDTH_16)
3896 ti->ti_width = SCSI_LOW_BUS_WIDTH_16;
3897
3898 if ((diskflags & SCSI_LOW_DISK_WIDE_16) == 0 &&
3899 ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
3900 ti->ti_width = SCSI_LOW_BUS_WIDTH_8;
3901
3902 if (ti->ti_flags_valid == SCSI_LOW_TARG_FLAGS_ALL_VALID)
3903 {
3904 if (ti->ti_maxsynch.offset != ti->ti_osynch.offset ||
3905 ti->ti_maxsynch.period != ti->ti_osynch.period)
3906 ti->ti_setup_msg |= SCSI_LOW_MSG_SYNCH;
3907 if (ti->ti_width != ti->ti_owidth)
3908 ti->ti_setup_msg |= (SCSI_LOW_MSG_WIDE | SCSI_LOW_MSG_SYNCH);
3909
3910 ti->ti_osynch = ti->ti_maxsynch;
3911 ti->ti_owidth = ti->ti_width;
3912 }
3913
3914 #ifdef SCSI_LOW_DEBUG
3915 if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_CALCF, ti->ti_id) != 0)
3916 {
3917 device_printf(slp->sl_dev,
3918 "(%d:*): max period(%dns) offset(%d) width(%d)\n",
3919 ti->ti_id,
3920 ti->ti_maxsynch.period * 4,
3921 ti->ti_maxsynch.offset,
3922 ti->ti_width);
3923 }
3924 #endif /* SCSI_LOW_DEBUG */
3925 }
3926
3927 static void
scsi_low_calcf_show(li)3928 scsi_low_calcf_show(li)
3929 struct lun_info *li;
3930 {
3931 struct targ_info *ti = li->li_ti;
3932 struct scsi_low_softc *slp = ti->ti_sc;
3933
3934 device_printf(slp->sl_dev,
3935 "(%d:%d): period(%d ns) offset(%d) width(%d) flags 0x%b\n",
3936 ti->ti_id, li->li_lun,
3937 ti->ti_maxsynch.period * 4,
3938 ti->ti_maxsynch.offset,
3939 ti->ti_width,
3940 li->li_flags, SCSI_LOW_BITS);
3941 }
3942
3943 #ifdef SCSI_LOW_START_UP_CHECK
3944 /**************************************************************
3945 * scsi world start up
3946 **************************************************************/
3947 static int scsi_low_poll(struct scsi_low_softc *, struct slccb *);
3948
3949 static int
scsi_low_start_up(slp)3950 scsi_low_start_up(slp)
3951 struct scsi_low_softc *slp;
3952 {
3953 struct targ_info *ti;
3954 struct lun_info *li;
3955 struct slccb *cb;
3956 int target, lun;
3957
3958 device_printf(slp->sl_dev, "scsi_low: probing all devices ....\n");
3959
3960 for (target = 0; target < slp->sl_ntargs; target ++)
3961 {
3962 if (target == slp->sl_hostid)
3963 {
3964 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
3965 {
3966 device_printf(slp->sl_dev,
3967 "scsi_low: target %d (host card)\n",
3968 target);
3969 }
3970 continue;
3971 }
3972
3973 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
3974 {
3975 device_printf(slp->sl_dev, "scsi_low: target %d lun ",
3976 target);
3977 }
3978
3979 ti = slp->sl_ti[target];
3980 for (lun = 0; lun < slp->sl_nluns; lun ++)
3981 {
3982 if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
3983 break;
3984
3985 cb->osdep = NULL;
3986 cb->bp = NULL;
3987
3988 li = scsi_low_alloc_li(ti, lun, 1);
3989
3990 scsi_low_enqueue(slp, ti, li, cb,
3991 CCB_AUTOSENSE | CCB_POLLED, 0);
3992
3993 scsi_low_poll(slp, cb);
3994
3995 if (li->li_state != SCSI_LOW_LUN_OK)
3996 break;
3997
3998 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
3999 {
4000 printf("%d ", lun);
4001 }
4002 }
4003
4004 if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
4005 {
4006 printf("\n");
4007 }
4008 }
4009 return 0;
4010 }
4011
4012 static int
scsi_low_poll(slp,cb)4013 scsi_low_poll(slp, cb)
4014 struct scsi_low_softc *slp;
4015 struct slccb *cb;
4016 {
4017 int tcount;
4018
4019 tcount = 0;
4020 while (slp->sl_nio > 0)
4021 {
4022 DELAY((1000 * 1000) / SCSI_LOW_POLL_HZ);
4023
4024 (*slp->sl_funcs->scsi_low_poll) (slp);
4025 if (tcount ++ < SCSI_LOW_POLL_HZ / SCSI_LOW_TIMEOUT_HZ)
4026 continue;
4027
4028 tcount = 0;
4029 scsi_low_timeout_check(slp);
4030 }
4031
4032 return 0;
4033 }
4034 #endif /* SCSI_LOW_START_UP_CHECK */
4035
4036 /**********************************************************
4037 * DEBUG SECTION
4038 **********************************************************/
4039 #ifdef SCSI_LOW_DEBUG
4040 static void
scsi_low_test_abort(slp,ti,li)4041 scsi_low_test_abort(slp, ti, li)
4042 struct scsi_low_softc *slp;
4043 struct targ_info *ti;
4044 struct lun_info *li;
4045 {
4046 struct slccb *acb;
4047
4048 if (li->li_disc > 1)
4049 {
4050 acb = TAILQ_FIRST(&li->li_discq);
4051 if (scsi_low_abort_ccb(slp, acb) == 0)
4052 {
4053 device_printf(slp->sl_dev,
4054 "aborting ccb(0x%lx) start\n", (u_long) acb);
4055 }
4056 }
4057 }
4058
4059 static void
scsi_low_test_atten(slp,ti,msg)4060 scsi_low_test_atten(slp, ti, msg)
4061 struct scsi_low_softc *slp;
4062 struct targ_info *ti;
4063 u_int msg;
4064 {
4065
4066 if (slp->sl_ph_count < SCSI_LOW_MAX_ATTEN_CHECK)
4067 scsi_low_assert_msg(slp, ti, msg, 0);
4068 else
4069 device_printf(slp->sl_dev, "atten check OK\n");
4070 }
4071
4072 static void
scsi_low_test_cmdlnk(slp,cb)4073 scsi_low_test_cmdlnk(slp, cb)
4074 struct scsi_low_softc *slp;
4075 struct slccb *cb;
4076 {
4077 #define SCSI_LOW_CMDLNK_NOK (CCB_INTERNAL | CCB_SENSE | CCB_CLEARQ)
4078
4079 if ((cb->ccb_flags & SCSI_LOW_CMDLNK_NOK) != 0)
4080 return;
4081
4082 memcpy(cb->ccb_scsi_cmd, slp->sl_scp.scp_cmd,
4083 slp->sl_scp.scp_cmdlen);
4084 cb->ccb_scsi_cmd[slp->sl_scp.scp_cmdlen - 1] |= 1;
4085 slp->sl_scp.scp_cmd = cb->ccb_scsi_cmd;
4086 }
4087 #endif /* SCSI_LOW_DEBUG */
4088
4089 /* static */ void
scsi_low_info(slp,ti,s)4090 scsi_low_info(slp, ti, s)
4091 struct scsi_low_softc *slp;
4092 struct targ_info *ti;
4093 u_char *s;
4094 {
4095
4096 if (slp == NULL)
4097 slp = LIST_FIRST(&sl_tab);
4098 if (s == NULL)
4099 s = "no message";
4100
4101 printf(">>>>> SCSI_LOW_INFO(0x%lx): %s\n", (u_long) slp->sl_Tnexus, s);
4102 if (ti == NULL)
4103 {
4104 TAILQ_FOREACH(ti, &slp->sl_titab, ti_chain)
4105 {
4106 scsi_low_print(slp, ti);
4107 }
4108 }
4109 else
4110 {
4111 scsi_low_print(slp, ti);
4112 }
4113 }
4114
4115 static u_char *phase[] =
4116 {
4117 "FREE", "ARBSTART", "SELSTART", "SELECTED",
4118 "CMDOUT", "DATA", "MSGIN", "MSGOUT", "STATIN", "DISC", "RESEL"
4119 };
4120
4121 void
scsi_low_print(slp,ti)4122 scsi_low_print(slp, ti)
4123 struct scsi_low_softc *slp;
4124 struct targ_info *ti;
4125 {
4126 struct lun_info *li;
4127 struct slccb *cb;
4128 struct sc_p *sp;
4129
4130 if (ti == NULL || ti == slp->sl_Tnexus)
4131 {
4132 ti = slp->sl_Tnexus;
4133 li = slp->sl_Lnexus;
4134 cb = slp->sl_Qnexus;
4135 }
4136 else
4137 {
4138 li = LIST_FIRST(&ti->ti_litab);
4139 cb = TAILQ_FIRST(&li->li_discq);
4140 }
4141 sp = &slp->sl_scp;
4142
4143 device_printf(slp->sl_dev,
4144 "=== NEXUS T(0x%lx) L(0x%lx) Q(0x%lx) NIO(%d) ===\n",
4145 (u_long) ti, (u_long) li, (u_long) cb, slp->sl_nio);
4146
4147 /* target stat */
4148 if (ti != NULL)
4149 {
4150 u_int flags = 0, maxnqio = 0, nqio = 0;
4151 int lun = CAM_LUN_WILDCARD;
4152
4153 if (li != NULL)
4154 {
4155 lun = li->li_lun;
4156 flags = li->li_flags;
4157 maxnqio = li->li_maxnqio;
4158 nqio = li->li_nqio;
4159 }
4160
4161 device_printf(slp->sl_dev,
4162 "(%d:%d) ph<%s> => ph<%s> DISC(%d) QIO(%d:%d)\n",
4163 ti->ti_id, lun, phase[(int) ti->ti_ophase],
4164 phase[(int) ti->ti_phase], ti->ti_disc,
4165 nqio, maxnqio);
4166
4167 if (cb != NULL)
4168 {
4169 printf("CCB: cmd[0] 0x%x clen 0x%x dlen 0x%x<0x%x stat 0x%x err %b\n",
4170 (u_int) cb->ccb_scp.scp_cmd[0],
4171 cb->ccb_scp.scp_cmdlen,
4172 cb->ccb_datalen,
4173 cb->ccb_scp.scp_datalen,
4174 (u_int) cb->ccb_sscp.scp_status,
4175 cb->ccb_error, SCSI_LOW_ERRORBITS);
4176 }
4177
4178 printf("MSGIN: ptr(%x) [%x][%x][%x][%x][%x] attention: %d\n",
4179 (u_int) (ti->ti_msginptr),
4180 (u_int) (ti->ti_msgin[0]),
4181 (u_int) (ti->ti_msgin[1]),
4182 (u_int) (ti->ti_msgin[2]),
4183 (u_int) (ti->ti_msgin[3]),
4184 (u_int) (ti->ti_msgin[4]),
4185 slp->sl_atten);
4186
4187 printf("MSGOUT: msgflags 0x%x [%x][%x][%x][%x][%x] msgoutlen %d C_FLAGS: %b\n",
4188 (u_int) ti->ti_msgflags,
4189 (u_int) (ti->ti_msgoutstr[0]),
4190 (u_int) (ti->ti_msgoutstr[1]),
4191 (u_int) (ti->ti_msgoutstr[2]),
4192 (u_int) (ti->ti_msgoutstr[3]),
4193 (u_int) (ti->ti_msgoutstr[4]),
4194 ti->ti_msgoutlen,
4195 flags, SCSI_LOW_BITS);
4196
4197 #ifdef SCSI_LOW_DIAGNOSTIC
4198 scsi_low_msg_log_show(&ti->ti_log_msgin, "MIN LOG ", 2);
4199 scsi_low_msg_log_show(&ti->ti_log_msgout, "MOUT LOG", 2);
4200 #endif /* SCSI_LOW_DIAGNOSTIC */
4201
4202 }
4203
4204 printf("SCB: daddr 0x%lx dlen 0x%x stat 0x%x err %b\n",
4205 (u_long) sp->scp_data,
4206 sp->scp_datalen,
4207 (u_int) sp->scp_status,
4208 slp->sl_error, SCSI_LOW_ERRORBITS);
4209 }
4210