2 /* $NecBSD: scsi_low.h,v 1.24.10.5 2001/06/26 07:31:46 honda Exp $ */
5 #define SCSI_LOW_DIAGNOSTIC
6 #define SCSI_LOW_ALT_QTAG_ALLOCATE
9 * [NetBSD for NEC PC-98 series]
10 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
11 * NetBSD/pc98 porting staff. All rights reserved.
12 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
13 * Naofumi HONDA. All rights reserved.
15 * [Ported for FreeBSD CAM]
16 * Copyright (c) 2000, 2001
17 * MITSUNAGA Noriaki, NOKUBI Hirotaka and TAKAHASHI Yoshihiro.
18 * All rights reserved.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
23 * 1. Redistributions of source code must retain the above copyright
24 * notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
28 * 3. The name of the author may not be used to endorse or promote products
29 * derived from this software without specific prior written permission.
31 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
32 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
33 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
34 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
35 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
36 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
37 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
40 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGE.
47 /*================================================
49 * (All os depend structures should be here!)
50 ================================================*/
51 /******** interface ******************************/
53 #define SCSI_LOW_INTERFACE_XS
54 #endif /* __NetBSD__ */
57 #define SCSI_LOW_INTERFACE_CAM
59 #endif /* __FreeBSD__ */
61 /******** includes *******************************/
63 #include <i386/Cbus/dev/scsi_dvcfg.h>
64 #include <dev/isa/ccbque.h>
65 #endif /* __NetBSD__ */
68 #include <sys/device_port.h>
71 #include <cam/cam_ccb.h>
72 #include <cam/cam_sim.h>
73 #include <cam/cam_xpt_sim.h>
74 #include <cam/cam_debug.h>
76 #include <cam/scsi/scsi_dvcfg.h>
77 #include <i386/isa/ccbque.h>
78 #endif /* __FreeBSD__ */
80 /******** functions macro ************************/
82 #define SCSI_LOW_DEBUGGER(dev) Debugger()
83 #define SCSI_LOW_DELAY(mu) delay((mu))
84 #define SCSI_LOW_SPLSCSI splbio
85 #define SCSI_LOW_BZERO(pt, size) memset((pt), 0, (size))
86 #endif /* __NetBSD__ */
90 #define SCSI_LOW_DEBUGGER(dev) kdb_enter(dev)
91 #define SCSI_LOW_DELAY(mu) DELAY((mu))
92 #define SCSI_LOW_SPLSCSI splcam
93 #define SCSI_LOW_BZERO(pt, size) bzero((pt), (size))
94 #endif /* __FreeBSD__ */
96 /******** os depend interface structures **********/
98 typedef struct scsipi_sense_data scsi_low_osdep_sense_data_t;
100 struct scsi_low_osdep_interface {
101 struct device si_dev;
103 struct scsipi_link *si_splp;
106 struct scsi_low_osdep_targ_interface {
109 struct scsi_low_osdep_lun_interface {
112 #endif /* __NetBSD__ */
115 typedef struct scsi_sense_data scsi_low_osdep_sense_data_t;
117 struct scsi_low_osdep_interface {
118 DEVPORT_DEVICE si_dev;
121 struct cam_path *path;
125 struct callout_handle engage_ch;
126 struct callout_handle timeout_ch;
127 #ifdef SCSI_LOW_POWFUNC
128 struct callout_handle recover_ch;
132 struct scsi_low_osdep_targ_interface {
135 struct scsi_low_osdep_lun_interface {
137 #endif /* __FreeBSD__ */
139 /******** os depend interface functions *************/
141 struct scsi_low_softc;
142 #define SCSI_LOW_TIMEOUT_STOP 0
143 #define SCSI_LOW_TIMEOUT_START 1
144 #define SCSI_LOW_TIMEOUT_CH_IO 0
145 #define SCSI_LOW_TIMEOUT_CH_ENGAGE 1
146 #define SCSI_LOW_TIMEOUT_CH_RECOVER 2
148 struct scsi_low_osdep_funcs {
149 int (*scsi_low_osdep_attach) \
150 (struct scsi_low_softc *);
151 int (*scsi_low_osdep_world_start) \
152 (struct scsi_low_softc *);
153 int (*scsi_low_osdep_dettach) \
154 (struct scsi_low_softc *);
155 int (*scsi_low_osdep_ccb_setup) \
156 (struct scsi_low_softc *, struct slccb *);
157 int (*scsi_low_osdep_done) \
158 (struct scsi_low_softc *, struct slccb *);
159 void (*scsi_low_osdep_timeout) \
160 (struct scsi_low_softc *, int, int);
163 /*================================================
164 * Generic Scsi Low header file
165 * (All os depend structures should be above!)
166 ================================================*/
167 /*************************************************
168 * Scsi low definitions
169 *************************************************/
170 #define SCSI_LOW_SYNC DVF_SCSI_SYNC
171 #define SCSI_LOW_DISC DVF_SCSI_DISC
172 #define SCSI_LOW_WAIT DVF_SCSI_WAIT
173 #define SCSI_LOW_LINK DVF_SCSI_LINK
174 #define SCSI_LOW_QTAG DVF_SCSI_QTAG
175 #define SCSI_LOW_NOPARITY DVF_SCSI_NOPARITY
176 #define SCSI_LOW_SAVESP DVF_SCSI_SAVESP
177 #define SCSI_LOW_DEFCFG DVF_SCSI_DEFCFG
178 #define SCSI_LOW_BITS DVF_SCSI_BITS
180 #define SCSI_LOW_PERIOD(n) DVF_SCSI_PERIOD(n)
181 #define SCSI_LOW_OFFSET(n) DVF_SCSI_OFFSET(n)
183 /* host scsi id and targets macro */
184 #ifndef SCSI_LOW_NTARGETS
185 #define SCSI_LOW_NTARGETS 8
186 #endif /* SCSI_LOW_NTARGETS */
187 #define SCSI_LOW_NCCB 128
189 #define SCSI_LOW_MAX_RETRY 3
190 #define SCSI_LOW_MAX_SELECTION_RETRY 10
192 /* timeout control macro */
193 #define SCSI_LOW_TIMEOUT_HZ 10
194 #define SCSI_LOW_MIN_TOUT 12
195 #define SCSI_LOW_TIMEOUT_CHECK_INTERVAL 1
196 #define SCSI_LOW_POWDOWN_TC 15
197 #define SCSI_LOW_MAX_PHCHANGES 256
198 #define SCSI2_RESET_DELAY 5000000
201 #define SCSI_LOW_MAX_MSGLEN 32
202 #define SCSI_LOW_MSG_LOG_DATALEN 8
204 /*************************************************
206 *************************************************/
215 u_int8_t scp_direction;
216 #define SCSI_LOW_RWUNK (-1)
217 #define SCSI_LOW_WRITE 0
218 #define SCSI_LOW_READ 1
220 u_int8_t scp_spare[2];
223 /*************************************************
224 * Command Control Block Structure
225 *************************************************/
226 typedef int scsi_low_tag_t;
229 #define SCSI_LOW_UNKLUN ((u_int) -1)
230 #define SCSI_LOW_UNKTAG ((scsi_low_tag_t) -1)
233 TAILQ_ENTRY(slccb) ccb_chain;
235 void *osdep; /* os depend structure */
237 struct targ_info *ti; /* targ_info */
238 struct lun_info *li; /* lun info */
239 struct buf *bp; /* io bufs */
241 scsi_low_tag_t ccb_tag; /* effective qtag */
242 scsi_low_tag_t ccb_otag; /* allocated qtag */
244 /*****************************************
245 * Scsi data pointers (original and saved)
246 *****************************************/
247 struct sc_p ccb_scp; /* given */
248 struct sc_p ccb_sscp; /* saved scsi data pointer */
249 int ccb_datalen; /* transfered data counter */
251 /*****************************************
253 *****************************************/
254 u_int ccb_msgoutflag;
255 u_int ccb_omsgoutflag;
257 /*****************************************
258 * Error or Timeout counters
259 *****************************************/
261 #define CCB_INTERNAL 0x0001
262 #define CCB_SENSE 0x0002
263 #define CCB_CLEARQ 0x0004
264 #define CCB_DISCQ 0x0008
265 #define CCB_STARTQ 0x0010
266 #define CCB_POLLED 0x0100 /* polling ccb */
267 #define CCB_NORETRY 0x0200 /* do NOT retry */
268 #define CCB_AUTOSENSE 0x0400 /* do a sence after CA */
269 #define CCB_URGENT 0x0800 /* an urgent ccb */
270 #define CCB_NOSDONE 0x1000 /* do not call an os done routine */
271 #define CCB_SCSIIO 0x2000 /* a normal scsi io coming from upper layer */
272 #define CCB_SILENT 0x4000 /* no terminate messages */
276 int ccb_rcnt; /* retry counter */
277 int ccb_selrcnt; /* selection retry counter */
278 int ccb_tc; /* timer counter */
279 int ccb_tcmax; /* max timeout */
281 /*****************************************
283 *****************************************/
284 u_int8_t ccb_scsi_cmd[12];
285 scsi_low_osdep_sense_data_t ccb_sense;
288 /*************************************************
290 *************************************************/
291 GENERIC_CCB_ASSERT(scsi_low, slccb)
293 /*************************************************
294 * Target and Lun structures
295 *************************************************/
296 struct scsi_low_softc;
297 LIST_HEAD(scsi_low_softc_tab, scsi_low_softc);
298 TAILQ_HEAD(targ_info_tab, targ_info);
299 LIST_HEAD(lun_info_tab, lun_info);
302 struct scsi_low_osdep_lun_interface li_sloi;
305 struct targ_info *li_ti; /* my target */
307 LIST_ENTRY(lun_info) lun_chain; /* targ_info link */
309 struct slccbtab li_discq; /* disconnect queue */
319 #define SCSI_LOW_MAXNEXUS (sizeof(u_int) * NBBY)
322 #ifdef SCSI_LOW_ALT_QTAG_ALLOCATE
323 u_int8_t li_qtagarray[SCSI_LOW_MAXNEXUS];
325 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
327 #define SCSI_LOW_QFLAG_CA_QCLEAR 0x01
333 #define SCSI_LOW_LUN_SLEEP 0x00
334 #define SCSI_LOW_LUN_START 0x01
335 #define SCSI_LOW_LUN_INQ 0x02
336 #define SCSI_LOW_LUN_MODEQ 0x03
337 #define SCSI_LOW_LUN_OK 0x04
338 u_int li_state; /* target lun state */
343 u_int li_flags_valid; /* valid flags */
344 #define SCSI_LOW_LUN_FLAGS_USER_VALID 0x0001
345 #define SCSI_LOW_LUN_FLAGS_DISK_VALID 0x0002
346 #define SCSI_LOW_LUN_FLAGS_QUIRKS_VALID 0x0004
347 #define SCSI_LOW_LUN_FLAGS_ALL_VALID \
348 (SCSI_LOW_LUN_FLAGS_USER_VALID | \
349 SCSI_LOW_LUN_FLAGS_DISK_VALID | SCSI_LOW_LUN_FLAGS_QUIRKS_VALID)
351 u_int li_flags; /* real lun control flags */
352 u_int li_cfgflags; /* lun control flags given by user */
353 u_int li_diskflags; /* lun control flags given by hardware info */
354 u_int li_quirks; /* lun control flags given by upper layer */
357 struct scsi_low_inq_data {
368 struct scsi_low_mode_sense_data {
369 u_int8_t sms_header[4];
376 u_int8_t cmp_spare[3];
382 struct scsi_low_msg_log {
386 } slml_msg[SCSI_LOW_MSG_LOG_DATALEN];
390 struct scsi_low_osdep_targ_interface ti_slti;
392 TAILQ_ENTRY(targ_info) ti_chain; /* targ_info link */
394 struct scsi_low_softc *ti_sc; /* our softc */
395 u_int ti_id; /* scsi id */
400 struct lun_info_tab ti_litab; /* lun chain */
403 * total disconnected nexus
412 #define PH_ARBSTART 0x01
413 #define PH_SELSTART 0x02
414 #define PH_SELECTED 0x03
417 #define PH_MSGIN 0x06
418 #define PH_MSGOUT 0x07
421 #define PH_RESEL 0x0a
422 u_int ti_phase; /* scsi phase */
423 u_int ti_ophase; /* old scsi phase */
428 u_int ti_msginptr; /* msgin ptr */
429 u_int ti_msginlen; /* expected msg length */
430 int ti_msgin_parity_error; /* parity error detected */
431 u_int8_t ti_msgin[SCSI_LOW_MAX_MSGLEN]; /* msgin buffer */
436 u_int ti_msgflags; /* msgs to be asserted */
437 u_int ti_omsgflags; /* msgs asserted */
438 u_int ti_emsgflags; /* a msg currently asserted */
439 #define SCSI_LOW_MSG_RESET 0x00000001
440 #define SCSI_LOW_MSG_REJECT 0x00000002
441 #define SCSI_LOW_MSG_PARITY 0x00000004
442 #define SCSI_LOW_MSG_ERROR 0x00000008
443 #define SCSI_LOW_MSG_IDENTIFY 0x00000010
444 #define SCSI_LOW_MSG_ABORT 0x00000020
445 #define SCSI_LOW_MSG_TERMIO 0x00000040
446 #define SCSI_LOW_MSG_SIMPLE_QTAG 0x00000080
447 #define SCSI_LOW_MSG_ORDERED_QTAG 0x00000100
448 #define SCSI_LOW_MSG_HEAD_QTAG 0x00000200
449 #define SCSI_LOW_MSG_ABORT_QTAG 0x00000400
450 #define SCSI_LOW_MSG_CLEAR_QTAG 0x00000800
451 #define SCSI_LOW_MSG_WIDE 0x00001000
452 #define SCSI_LOW_MSG_SYNCH 0x00002000
453 #define SCSI_LOW_MSG_NOOP 0x00004000
454 #define SCSI_LOW_MSG_LAST 0x00008000
455 #define SCSI_LOW_MSG_ALL 0xffffffff
458 u_int8_t ti_msgoutstr[SCSI_LOW_MAX_MSGLEN]; /* scsi msgout */
459 u_int ti_msgoutlen; /* msgout strlen */
462 * target initialize msgout
464 u_int ti_setup_msg; /* setup msgout requests */
465 u_int ti_setup_msg_done;
468 * synch and wide data info
470 u_int ti_flags_valid; /* valid flags */
471 #define SCSI_LOW_TARG_FLAGS_USER_VALID 0x0001
472 #define SCSI_LOW_TARG_FLAGS_DISK_VALID 0x0002
473 #define SCSI_LOW_TARG_FLAGS_QUIRKS_VALID 0x0004
474 #define SCSI_LOW_TARG_FLAGS_ALL_VALID \
475 (SCSI_LOW_TARG_FLAGS_USER_VALID | \
476 SCSI_LOW_TARG_FLAGS_DISK_VALID | SCSI_LOW_TARG_FLAGS_QUIRKS_VALID)
478 u_int ti_diskflags; /* given target disk flags */
479 u_int ti_quirks; /* given target quirk */
484 } ti_osynch, ti_maxsynch; /* synch data */
486 #define SCSI_LOW_BUS_WIDTH_8 0
487 #define SCSI_LOW_BUS_WIDTH_16 1
488 #define SCSI_LOW_BUS_WIDTH_32 2
489 u_int ti_owidth, ti_width;
496 #ifdef SCSI_LOW_DIAGNOSTIC
497 struct scsi_low_msg_log ti_log_msgout;
498 struct scsi_low_msg_log ti_log_msgin;
499 #endif /* SCSI_LOW_DIAGNOSTIC */
502 /*************************************************
503 * COMMON HEADER STRUCTURE
504 *************************************************/
505 struct scsi_low_softc;
507 typedef struct scsi_low_softc *sc_low_t;
509 #define SCSI_LOW_START_OK 0
510 #define SCSI_LOW_START_FAIL 1
511 #define SCSI_LOW_INFO_ALLOC 0
512 #define SCSI_LOW_INFO_REVOKE 1
513 #define SCSI_LOW_INFO_DEALLOC 2
514 #define SCSI_LOW_POWDOWN 1
515 #define SCSI_LOW_ENGAGE 2
517 #define SC_LOW_INIT_T (int (*)(sc_low_t, int))
518 #define SC_LOW_BUSRST_T (void (*)(sc_low_t))
519 #define SC_LOW_TARG_INIT_T (int (*)(sc_low_t, struct targ_info *, int))
520 #define SC_LOW_LUN_INIT_T (int (*)(sc_low_t, struct targ_info *, struct lun_info *, int))
521 #define SC_LOW_SELECT_T (int (*)(sc_low_t, struct slccb *))
522 #define SC_LOW_ATTEN_T (void (*)(sc_low_t))
523 #define SC_LOW_NEXUS_T (int (*)(sc_low_t))
524 #define SC_LOW_MSG_T (int (*)(sc_low_t, struct targ_info *, u_int))
525 #define SC_LOW_POLL_T (int (*)(void *))
526 #define SC_LOW_POWER_T (int (*)(sc_low_t, u_int))
527 #define SC_LOW_TIMEOUT_T (int (*)(sc_low_t))
529 struct scsi_low_funcs {
530 int (*scsi_low_init)(sc_low_t, int);
531 void (*scsi_low_bus_reset)(sc_low_t);
532 int (*scsi_low_targ_init)(sc_low_t, struct targ_info *, int);
533 int (*scsi_low_lun_init)(sc_low_t, struct targ_info *, struct lun_info *, int);
534 int (*scsi_low_start_bus)(sc_low_t, struct slccb *);
535 int (*scsi_low_establish_lun_nexus)(sc_low_t);
536 int (*scsi_low_establish_ccb_nexus)(sc_low_t);
537 void (*scsi_low_attention)(sc_low_t);
538 int (*scsi_low_msg)(sc_low_t, struct targ_info *, u_int);
539 int (*scsi_low_timeout)(sc_low_t);
540 int (*scsi_low_poll)(void *);
541 int (*scsi_low_power)(sc_low_t, u_int);
542 int (*scsi_low_ioctl)(sc_low_t, u_long, caddr_t, int, struct proc *);
545 struct scsi_low_softc {
546 /* os depend structure */
547 struct scsi_low_osdep_interface sl_si;
548 #define sl_dev sl_si.si_dev
549 struct scsi_low_osdep_funcs *sl_osdep_fp;
553 LIST_ENTRY(scsi_low_softc) sl_chain;
556 struct targ_info *sl_ti[SCSI_LOW_NTARGETS];
557 struct targ_info_tab sl_titab;
559 /* current active T_L_Q nexus */
560 struct targ_info *sl_Tnexus; /* Target nexus */
561 struct lun_info *sl_Lnexus; /* Lun nexus */
562 struct slccb *sl_Qnexus; /* Qtag nexus */
565 /* ccb start queue */
566 struct slccbtab sl_start;
568 /* retry limit and phase change counter */
571 int sl_timeout_count;
573 /* selection & total num disconnect targets */
577 struct slccb *sl_selid;
580 int sl_atten; /* ATN asserted */
581 int sl_clear_atten; /* negate ATN required */
583 /* scsi phase suggested by scsi msg */
585 #define MSGPH_NULL 0x00 /* no msg */
586 #define MSGPH_DISC 0x01 /* disconnect msg */
587 #define MSGPH_CMDC 0x02 /* cmd complete msg */
588 #define MSGPH_ABORT 0x03 /* abort seq */
589 #define MSGPH_TERM 0x04 /* current io terminate */
590 #define MSGPH_LCTERM 0x05 /* cmd link terminated */
591 #define MSGPH_RESET 0x06 /* reset target */
594 u_int sl_error; /* error flags */
595 #define FATALIO 0x0001 /* generic io error & retry io */
596 #define ABORTIO 0x0002 /* generic io error & terminate io */
597 #define TIMEOUTIO 0x0004 /* watch dog timeout */
598 #define SELTIMEOUTIO 0x0008 /* selection timeout */
599 #define PDMAERR 0x0010 /* dma xfer error */
600 #define MSGERR 0x0020 /* msgsys error */
601 #define PARITYERR 0x0040 /* parity error */
602 #define BUSYERR 0x0080 /* target busy error */
603 #define STATERR 0x0100 /* status error */
604 #define UACAERR 0x0200 /* target CA state, no sense check */
605 #define SENSEIO 0x1000 /* cmd not excuted but sense data ok */
606 #define SENSEERR 0x2000 /* cmd not excuted and sense data bad */
607 #define UBFERR 0x4000 /* unexpected bus free */
608 #define PENDINGIO 0x8000 /* ccb start not yet */
609 #define SCSI_LOW_ERRORBITS "\020\017ubferr\016senseerr\015senseio\012uacaerr\011staterr\010busy\007parity\006msgerr\005pdmaerr\004seltimeout\003timeout\002abort\001fatal"
611 /* current scsi data pointer */
615 u_int sl_active; /* host is busy state */
616 int sl_powc; /* power down timer counter */
617 u_int sl_rstep; /* resume step */
619 /* configuration flags */
621 #define HW_POWDOWN 0x0001
622 #define HW_RESUME 0x0002
623 #define HW_PDMASTART 0x0004
624 #define HW_INACTIVE 0x0008
625 #define HW_POWERCTRL 0x0010
626 #define HW_INITIALIZING 0x0020
627 #define HW_READ_PADDING 0x1000
628 #define HW_WRITE_PADDING 0x2000
631 #define CFG_NODISC 0x0001
632 #define CFG_NOPARITY 0x0002
633 #define CFG_NOATTEN 0x0004
634 #define CFG_ASYNC 0x0008
635 #define CFG_NOQTAG 0x0010
638 #define SHOW_SYNCH_NEG 0x0001
639 #define SHOW_WIDE_NEG 0x0002
640 #define SHOW_CALCF_RES 0x0010
641 #define SHOW_PROBE_RES 0x0020
642 #define SHOW_ALL_NEG -1
644 /* host informations */
650 /* interface functions */
651 struct scsi_low_funcs *sl_funcs;
656 #if defined(i386) || defined(__i386__)
657 u_int sl_irq; /* XXX */
661 /*************************************************
662 * SCSI LOW service functions
663 *************************************************/
665 * Scsi low attachment function.
667 int scsi_low_attach(struct scsi_low_softc *, int, int, int, int, int);
668 int scsi_low_dettach(struct scsi_low_softc *);
671 * Scsi low interface activate or deactivate functions
673 int scsi_low_is_busy(struct scsi_low_softc *);
674 int scsi_low_activate(struct scsi_low_softc *);
675 int scsi_low_deactivate(struct scsi_low_softc *);
678 * Scsi phase "bus service" functions.
679 * These functions are corresponding to each scsi bus phaeses.
681 /* bus idle phase (other initiators or targets release bus) */
682 void scsi_low_bus_idle(struct scsi_low_softc *);
684 /* arbitration and selection phase */
685 void scsi_low_arbit_fail(struct scsi_low_softc *, struct slccb *);
686 static __inline void scsi_low_arbit_win(struct scsi_low_softc *);
689 #define SCSI_LOW_MSGOUT_INIT 0x00000001
690 #define SCSI_LOW_MSGOUT_UNIFY 0x00000002
691 int scsi_low_msgout(struct scsi_low_softc *, struct targ_info *, u_int);
694 #define SCSI_LOW_DATA_PE 0x80000000
695 int scsi_low_msgin(struct scsi_low_softc *, struct targ_info *, u_int);
698 static __inline int scsi_low_statusin(struct scsi_low_softc *, struct targ_info *, u_int);
701 int scsi_low_data(struct scsi_low_softc *, struct targ_info *, struct buf **, int);
702 static __inline void scsi_low_data_finish(struct scsi_low_softc *);
705 int scsi_low_cmd(struct scsi_low_softc *, struct targ_info *);
707 /* reselection phase */
708 struct targ_info *scsi_low_reselected(struct scsi_low_softc *, u_int);
710 /* disconnection phase */
711 int scsi_low_disconnected(struct scsi_low_softc *, struct targ_info *);
714 * Scsi bus restart function.
715 * Canncel all established nexuses => scsi system initialized => restart jobs.
717 #define SCSI_LOW_RESTART_HARD 1
718 #define SCSI_LOW_RESTART_SOFT 0
719 int scsi_low_restart(struct scsi_low_softc *, int, u_char *);
722 * Scsi utility fucntions
724 /* print current status */
725 void scsi_low_print(struct scsi_low_softc *, struct targ_info *);
727 /* bus reset utility */
728 void scsi_low_bus_reset(struct scsi_low_softc *);
730 /*************************************************
732 *************************************************/
733 #define SCSI_LOW_SETUP_PHASE(ti, phase) \
735 (ti)->ti_ophase = ti->ti_phase; \
736 (ti)->ti_phase = (phase); \
739 #define SCSI_LOW_SETUP_MSGPHASE(slp, PHASE) \
741 (slp)->sl_msgphase = (PHASE); \
744 #define SCSI_LOW_ASSERT_ATN(slp) \
746 (slp)->sl_atten = 1; \
749 #define SCSI_LOW_DEASSERT_ATN(slp) \
751 (slp)->sl_atten = 0; \
754 /*************************************************
756 *************************************************/
757 static __inline void scsi_low_attention(struct scsi_low_softc *);
758 static __inline int scsi_low_is_msgout_continue(struct targ_info *, u_int);
759 static __inline int scsi_low_assert_msg(struct scsi_low_softc *, struct targ_info *, u_int, int);
760 static __inline int scsi_low_is_disconnect_ok(struct slccb *);
763 scsi_low_is_msgout_continue(ti, mask)
764 struct targ_info *ti;
768 return ((ti->ti_msgflags & (~mask)) != 0);
772 scsi_low_is_disconnect_ok(cb)
776 return ((cb->li->li_flags & SCSI_LOW_DISC) != 0 &&
777 (cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) == 0);
781 scsi_low_attention(slp)
782 struct scsi_low_softc *slp;
785 if (slp->sl_atten != 0)
788 (*slp->sl_funcs->scsi_low_attention) (slp);
789 SCSI_LOW_ASSERT_ATN(slp);
793 scsi_low_assert_msg(slp, ti, msg, now)
794 struct scsi_low_softc *slp;
795 struct targ_info *ti;
800 ti->ti_msgflags |= msg;
802 scsi_low_attention(slp);
807 scsi_low_arbit_win(slp)
808 struct scsi_low_softc *slp;
811 slp->sl_selid = NULL;
815 scsi_low_data_finish(slp)
816 struct scsi_low_softc *slp;
819 if (slp->sl_Qnexus != NULL)
821 slp->sl_Qnexus->ccb_datalen = slp->sl_scp.scp_datalen;
826 scsi_low_statusin(slp, ti, c)
827 struct scsi_low_softc *slp;
828 struct targ_info *ti;
833 if ((c & SCSI_LOW_DATA_PE) != 0)
835 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ERROR, 0);
838 slp->sl_scp.scp_status = (u_int8_t) c;
842 /*************************************************
844 *************************************************/
845 /* XXX: use scsi_message.h */
847 #define ST_CHKCOND 0x02
850 #define ST_INTERGOOD 0x10
851 #define ST_INTERMET 0x14
852 #define ST_CONFLICT 0x18
853 #define ST_CMDTERM 0x22
854 #define ST_QUEFULL 0x28
855 #define ST_UNKNOWN 0xff
857 #define MSG_COMP 0x00
858 #define MSG_EXTEND 0x01
860 #define MKMSG_EXTEND(XLEN, XCODE) ((((u_int)(XLEN)) << NBBY) | ((u_int)(XCODE)))
861 #define MSG_EXTEND_MDPCODE 0x00
862 #define MSG_EXTEND_MDPLEN 0x05
863 #define MSG_EXTEND_SYNCHCODE 0x01
864 #define MSG_EXTEND_SYNCHLEN 0x03
865 #define MSG_EXTEND_WIDECODE 0x03
866 #define MSG_EXTEND_WIDELEN 0x02
868 #define MSG_SAVESP 0x02
869 #define MSG_RESTORESP 0x03
870 #define MSG_DISCON 0x04
871 #define MSG_I_ERROR 0x05
872 #define MSG_ABORT 0x06
873 #define MSG_REJECT 0x07
874 #define MSG_NOOP 0x08
875 #define MSG_PARITY 0x09
876 #define MSG_LCOMP 0x0a
877 #define MSG_LCOMP_F 0x0b
878 #define MSG_RESET 0x0c
879 #define MSG_ABORT_QTAG 0x0d
880 #define MSG_CLEAR_QTAG 0x0e
881 #define MSG_TERM_IO 0x11
882 #define MSG_SIMPLE_QTAG 0x20
883 #define MSG_HEAD_QTAG 0x21
884 #define MSG_ORDERED_QTAG 0x22
885 #define MSG_IDENTIFY 0x80
886 #define MSG_IDENTIFY_DISCPRIV 0x40
887 #endif /* !_SCSI_LOW_H_ */