1 /* $FreeBSD: src/sys/cam/scsi/scsi_low.h,v 1.1.2.4 2001/07/22 00:21:41 non Exp $ */
2 /* $DragonFly: src/sys/bus/cam/scsi/scsi_low.h,v 1.9 2005/12/05 03:42:31 swildner Exp $ */
3 /* $NecBSD: scsi_low.h,v 1.24.10.5 2001/06/26 07:31:46 honda Exp $ */
6 #define SCSI_LOW_DIAGNOSTIC
7 #define SCSI_LOW_ALT_QTAG_ALLOCATE
10 * [NetBSD for NEC PC-98 series]
11 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
12 * NetBSD/pc98 porting staff. All rights reserved.
13 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
14 * Naofumi HONDA. All rights reserved.
16 * [Ported for FreeBSD CAM]
17 * Copyright (c) 2000, 2001
18 * MITSUNAGA Noriaki, NOKUBI Hirotaka and TAKAHASHI Yoshihiro.
19 * All rights reserved.
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
24 * 1. Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in the
28 * documentation and/or other materials provided with the distribution.
29 * 3. The name of the author may not be used to endorse or promote products
30 * derived from this software without specific prior written permission.
32 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
33 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
34 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
35 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
41 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGE.
48 #define SCSI_LOW_INTERFACE_CAM
50 #include <sys/device_port.h>
51 #include <bus/cam/cam.h>
52 #include <bus/cam/cam_ccb.h>
53 #include <bus/cam/cam_sim.h>
54 #include <bus/cam/cam_xpt_sim.h>
55 #include <bus/cam/cam_debug.h>
57 #include "scsi_dvcfg.h"
58 #include <i386/isa/ccbque.h>
61 #define SCSI_LOW_DEBUGGER(dev) Debugger((dev))
62 #define SCSI_LOW_DELAY(mu) DELAY((mu))
63 #define SCSI_LOW_BZERO(pt, size) bzero((pt), (size))
65 typedef struct scsi_sense_data scsi_low_osdep_sense_data_t;
67 struct scsi_low_osdep_interface {
68 DEVPORT_DEVICE si_dev;
71 struct cam_path *path;
75 struct callout engage_ch;
76 struct callout timeout_ch;
79 struct scsi_low_osdep_targ_interface {
82 struct scsi_low_osdep_lun_interface {
85 /******** os depend interface functions *************/
87 struct scsi_low_softc;
88 #define SCSI_LOW_TIMEOUT_STOP 0
89 #define SCSI_LOW_TIMEOUT_START 1
90 #define SCSI_LOW_TIMEOUT_CH_IO 0
91 #define SCSI_LOW_TIMEOUT_CH_ENGAGE 1
92 #define SCSI_LOW_TIMEOUT_CH_RECOVER 2
94 struct scsi_low_osdep_funcs {
95 int (*scsi_low_osdep_attach) \
96 (struct scsi_low_softc *);
97 int (*scsi_low_osdep_world_start) \
98 (struct scsi_low_softc *);
99 int (*scsi_low_osdep_dettach) \
100 (struct scsi_low_softc *);
101 int (*scsi_low_osdep_ccb_setup) \
102 (struct scsi_low_softc *, struct slccb *);
103 int (*scsi_low_osdep_done) \
104 (struct scsi_low_softc *, struct slccb *);
105 void (*scsi_low_osdep_timeout) \
106 (struct scsi_low_softc *, int, int);
109 /*================================================
110 * Generic Scsi Low header file
111 * (All os depend structures should be above!)
112 ================================================*/
113 /*************************************************
114 * Scsi low definitions
115 *************************************************/
116 #define SCSI_LOW_SYNC DVF_SCSI_SYNC
117 #define SCSI_LOW_DISC DVF_SCSI_DISC
118 #define SCSI_LOW_WAIT DVF_SCSI_WAIT
119 #define SCSI_LOW_LINK DVF_SCSI_LINK
120 #define SCSI_LOW_QTAG DVF_SCSI_QTAG
121 #define SCSI_LOW_NOPARITY DVF_SCSI_NOPARITY
122 #define SCSI_LOW_SAVESP DVF_SCSI_SAVESP
123 #define SCSI_LOW_DEFCFG DVF_SCSI_DEFCFG
124 #define SCSI_LOW_BITS DVF_SCSI_BITS
126 #define SCSI_LOW_PERIOD(n) DVF_SCSI_PERIOD(n)
127 #define SCSI_LOW_OFFSET(n) DVF_SCSI_OFFSET(n)
129 /* host scsi id and targets macro */
130 #ifndef SCSI_LOW_NTARGETS
131 #define SCSI_LOW_NTARGETS 8
132 #endif /* SCSI_LOW_NTARGETS */
133 #define SCSI_LOW_NCCB 128
135 #define SCSI_LOW_MAX_RETRY 3
136 #define SCSI_LOW_MAX_SELECTION_RETRY 10
138 /* timeout control macro */
139 #define SCSI_LOW_TIMEOUT_HZ 10
140 #define SCSI_LOW_MIN_TOUT 12
141 #define SCSI_LOW_TIMEOUT_CHECK_INTERVAL 1
142 #define SCSI_LOW_POWDOWN_TC 15
143 #define SCSI_LOW_MAX_PHCHANGES 256
144 #define SCSI2_RESET_DELAY 5000000
147 #define SCSI_LOW_MAX_MSGLEN 32
148 #define SCSI_LOW_MSG_LOG_DATALEN 8
150 /*************************************************
152 *************************************************/
161 u_int8_t scp_direction;
162 #define SCSI_LOW_RWUNK (-1)
163 #define SCSI_LOW_WRITE 0
164 #define SCSI_LOW_READ 1
166 u_int8_t scp_spare[2];
169 /*************************************************
170 * Command Control Block Structure
171 *************************************************/
172 typedef int scsi_low_tag_t;
175 #define SCSI_LOW_UNKLUN ((u_int) -1)
176 #define SCSI_LOW_UNKTAG ((scsi_low_tag_t) -1)
179 TAILQ_ENTRY(slccb) ccb_chain;
181 void *osdep; /* os depend structure */
183 struct targ_info *ti; /* targ_info */
184 struct lun_info *li; /* lun info */
185 struct buf *bp; /* io bufs */
187 scsi_low_tag_t ccb_tag; /* effective qtag */
188 scsi_low_tag_t ccb_otag; /* allocated qtag */
190 /*****************************************
191 * Scsi data pointers (original and saved)
192 *****************************************/
193 struct sc_p ccb_scp; /* given */
194 struct sc_p ccb_sscp; /* saved scsi data pointer */
195 int ccb_datalen; /* transfered data counter */
197 /*****************************************
199 *****************************************/
200 u_int ccb_msgoutflag;
201 u_int ccb_omsgoutflag;
203 /*****************************************
204 * Error or Timeout counters
205 *****************************************/
207 #define CCB_INTERNAL 0x0001
208 #define CCB_SENSE 0x0002
209 #define CCB_CLEARQ 0x0004
210 #define CCB_DISCQ 0x0008
211 #define CCB_STARTQ 0x0010
212 #define CCB_POLLED 0x0100 /* polling ccb */
213 #define CCB_NORETRY 0x0200 /* do NOT retry */
214 #define CCB_AUTOSENSE 0x0400 /* do a sence after CA */
215 #define CCB_URGENT 0x0800 /* an urgent ccb */
216 #define CCB_NOSDONE 0x1000 /* do not call an os done routine */
217 #define CCB_SCSIIO 0x2000 /* a normal scsi io coming from upper layer */
218 #define CCB_SILENT 0x4000 /* no terminate messages */
222 int ccb_rcnt; /* retry counter */
223 int ccb_selrcnt; /* selection retry counter */
224 int ccb_tc; /* timer counter */
225 int ccb_tcmax; /* max timeout */
227 /*****************************************
229 *****************************************/
230 u_int8_t ccb_scsi_cmd[12];
231 scsi_low_osdep_sense_data_t ccb_sense;
234 /*************************************************
236 *************************************************/
237 GENERIC_CCB_ASSERT(scsi_low, slccb)
239 /*************************************************
240 * Target and Lun structures
241 *************************************************/
242 struct scsi_low_softc;
243 LIST_HEAD(scsi_low_softc_tab, scsi_low_softc);
244 TAILQ_HEAD(targ_info_tab, targ_info);
245 LIST_HEAD(lun_info_tab, lun_info);
248 struct scsi_low_osdep_lun_interface li_sloi;
251 struct targ_info *li_ti; /* my target */
253 LIST_ENTRY(lun_info) lun_chain; /* targ_info link */
255 struct slccbtab li_discq; /* disconnect queue */
265 #define SCSI_LOW_MAXNEXUS (sizeof(u_int) * NBBY)
268 #ifdef SCSI_LOW_ALT_QTAG_ALLOCATE
269 u_int8_t li_qtagarray[SCSI_LOW_MAXNEXUS];
271 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
273 #define SCSI_LOW_QFLAG_CA_QCLEAR 0x01
279 #define SCSI_LOW_LUN_SLEEP 0x00
280 #define SCSI_LOW_LUN_START 0x01
281 #define SCSI_LOW_LUN_INQ 0x02
282 #define SCSI_LOW_LUN_MODEQ 0x03
283 #define SCSI_LOW_LUN_OK 0x04
284 u_int li_state; /* target lun state */
289 u_int li_flags_valid; /* valid flags */
290 #define SCSI_LOW_LUN_FLAGS_USER_VALID 0x0001
291 #define SCSI_LOW_LUN_FLAGS_DISK_VALID 0x0002
292 #define SCSI_LOW_LUN_FLAGS_QUIRKS_VALID 0x0004
293 #define SCSI_LOW_LUN_FLAGS_ALL_VALID \
294 (SCSI_LOW_LUN_FLAGS_USER_VALID | \
295 SCSI_LOW_LUN_FLAGS_DISK_VALID | SCSI_LOW_LUN_FLAGS_QUIRKS_VALID)
297 u_int li_flags; /* real lun control flags */
298 u_int li_cfgflags; /* lun control flags given by user */
299 u_int li_diskflags; /* lun control flags given by hardware info */
300 u_int li_quirks; /* lun control flags given by upper layer */
303 struct scsi_low_inq_data {
311 } __attribute__((packed)) li_inq;
314 struct scsi_low_mode_sense_data {
315 u_int8_t sms_header[4];
322 u_int8_t cmp_spare[3];
323 } __attribute__((packed)) sms_cmp;
328 struct scsi_low_msg_log {
332 } slml_msg[SCSI_LOW_MSG_LOG_DATALEN];
336 struct scsi_low_osdep_targ_interface ti_slti;
338 TAILQ_ENTRY(targ_info) ti_chain; /* targ_info link */
340 struct scsi_low_softc *ti_sc; /* our softc */
341 u_int ti_id; /* scsi id */
346 struct lun_info_tab ti_litab; /* lun chain */
349 * total disconnected nexus
358 #define PH_ARBSTART 0x01
359 #define PH_SELSTART 0x02
360 #define PH_SELECTED 0x03
363 #define PH_MSGIN 0x06
364 #define PH_MSGOUT 0x07
367 #define PH_RESEL 0x0a
368 u_int ti_phase; /* scsi phase */
369 u_int ti_ophase; /* old scsi phase */
374 u_int ti_msginptr; /* msgin ptr */
375 u_int ti_msginlen; /* expected msg length */
376 int ti_msgin_parity_error; /* parity error detected */
377 u_int8_t ti_msgin[SCSI_LOW_MAX_MSGLEN]; /* msgin buffer */
382 u_int ti_msgflags; /* msgs to be asserted */
383 u_int ti_omsgflags; /* msgs asserted */
384 u_int ti_emsgflags; /* a msg currently asserted */
385 #define SCSI_LOW_MSG_RESET 0x00000001
386 #define SCSI_LOW_MSG_REJECT 0x00000002
387 #define SCSI_LOW_MSG_PARITY 0x00000004
388 #define SCSI_LOW_MSG_ERROR 0x00000008
389 #define SCSI_LOW_MSG_IDENTIFY 0x00000010
390 #define SCSI_LOW_MSG_ABORT 0x00000020
391 #define SCSI_LOW_MSG_TERMIO 0x00000040
392 #define SCSI_LOW_MSG_SIMPLE_QTAG 0x00000080
393 #define SCSI_LOW_MSG_ORDERED_QTAG 0x00000100
394 #define SCSI_LOW_MSG_HEAD_QTAG 0x00000200
395 #define SCSI_LOW_MSG_ABORT_QTAG 0x00000400
396 #define SCSI_LOW_MSG_CLEAR_QTAG 0x00000800
397 #define SCSI_LOW_MSG_WIDE 0x00001000
398 #define SCSI_LOW_MSG_SYNCH 0x00002000
399 #define SCSI_LOW_MSG_NOOP 0x00004000
400 #define SCSI_LOW_MSG_LAST 0x00008000
401 #define SCSI_LOW_MSG_ALL 0xffffffff
404 u_int8_t ti_msgoutstr[SCSI_LOW_MAX_MSGLEN]; /* scsi msgout */
405 u_int ti_msgoutlen; /* msgout strlen */
408 * target initialize msgout
410 u_int ti_setup_msg; /* setup msgout requests */
411 u_int ti_setup_msg_done;
414 * synch and wide data info
416 u_int ti_flags_valid; /* valid flags */
417 #define SCSI_LOW_TARG_FLAGS_USER_VALID 0x0001
418 #define SCSI_LOW_TARG_FLAGS_DISK_VALID 0x0002
419 #define SCSI_LOW_TARG_FLAGS_QUIRKS_VALID 0x0004
420 #define SCSI_LOW_TARG_FLAGS_ALL_VALID \
421 (SCSI_LOW_TARG_FLAGS_USER_VALID | \
422 SCSI_LOW_TARG_FLAGS_DISK_VALID | SCSI_LOW_TARG_FLAGS_QUIRKS_VALID)
424 u_int ti_diskflags; /* given target disk flags */
425 u_int ti_quirks; /* given target quirk */
430 } ti_osynch, ti_maxsynch; /* synch data */
432 #define SCSI_LOW_BUS_WIDTH_8 0
433 #define SCSI_LOW_BUS_WIDTH_16 1
434 #define SCSI_LOW_BUS_WIDTH_32 2
435 u_int ti_owidth, ti_width;
442 #ifdef SCSI_LOW_DIAGNOSTIC
443 struct scsi_low_msg_log ti_log_msgout;
444 struct scsi_low_msg_log ti_log_msgin;
445 #endif /* SCSI_LOW_DIAGNOSTIC */
448 /*************************************************
449 * COMMON HEADER STRUCTURE
450 *************************************************/
451 struct scsi_low_softc;
453 typedef struct scsi_low_softc *sc_low_t;
455 #define SCSI_LOW_START_OK 0
456 #define SCSI_LOW_START_FAIL 1
457 #define SCSI_LOW_INFO_ALLOC 0
458 #define SCSI_LOW_INFO_REVOKE 1
459 #define SCSI_LOW_INFO_DEALLOC 2
460 #define SCSI_LOW_POWDOWN 1
461 #define SCSI_LOW_ENGAGE 2
463 #define SC_LOW_INIT_T (int (*) (sc_low_t, int))
464 #define SC_LOW_BUSRST_T (void (*) (sc_low_t))
465 #define SC_LOW_TARG_INIT_T (int (*) (sc_low_t, struct targ_info *, int))
466 #define SC_LOW_LUN_INIT_T (int (*) (sc_low_t, struct targ_info *, struct lun_info *, int))
467 #define SC_LOW_SELECT_T (int (*) (sc_low_t, struct slccb *))
468 #define SC_LOW_ATTEN_T (void (*) (sc_low_t))
469 #define SC_LOW_NEXUS_T (int (*) (sc_low_t))
470 #define SC_LOW_MSG_T (int (*) (sc_low_t, struct targ_info *, u_int))
471 #define SC_LOW_POLL_T (int (*) (void *))
472 #define SC_LOW_POWER_T (int (*) (sc_low_t, u_int))
473 #define SC_LOW_TIMEOUT_T (int (*) (sc_low_t))
475 struct scsi_low_funcs {
476 int (*scsi_low_init) (sc_low_t, int);
477 void (*scsi_low_bus_reset) (sc_low_t);
478 int (*scsi_low_targ_init) (sc_low_t, struct targ_info *, int);
479 int (*scsi_low_lun_init) (sc_low_t, struct targ_info *, struct lun_info *, int);
480 int (*scsi_low_start_bus) (sc_low_t, struct slccb *);
481 int (*scsi_low_establish_lun_nexus) (sc_low_t);
482 int (*scsi_low_establish_ccb_nexus) (sc_low_t);
483 void (*scsi_low_attention) (sc_low_t);
484 int (*scsi_low_msg) (sc_low_t, struct targ_info *, u_int);
485 int (*scsi_low_timeout) (sc_low_t);
486 int (*scsi_low_poll) (void *);
487 int (*scsi_low_power) (sc_low_t, u_int);
488 int (*scsi_low_ioctl) (sc_low_t, u_long, caddr_t, int, struct proc *);
491 struct scsi_low_softc {
492 /* os depend structure */
493 struct scsi_low_osdep_interface sl_si;
494 #define sl_dev sl_si.si_dev
495 struct scsi_low_osdep_funcs *sl_osdep_fp;
499 LIST_ENTRY(scsi_low_softc) sl_chain;
502 struct targ_info *sl_ti[SCSI_LOW_NTARGETS];
503 struct targ_info_tab sl_titab;
505 /* current active T_L_Q nexus */
506 struct targ_info *sl_Tnexus; /* Target nexus */
507 struct lun_info *sl_Lnexus; /* Lun nexus */
508 struct slccb *sl_Qnexus; /* Qtag nexus */
511 /* ccb start queue */
512 struct slccbtab sl_start;
514 /* retry limit and phase change counter */
517 int sl_timeout_count;
519 /* selection & total num disconnect targets */
523 struct slccb *sl_selid;
526 int sl_atten; /* ATN asserted */
527 int sl_clear_atten; /* negate ATN required */
529 /* scsi phase suggested by scsi msg */
531 #define MSGPH_NULL 0x00 /* no msg */
532 #define MSGPH_DISC 0x01 /* disconnect msg */
533 #define MSGPH_CMDC 0x02 /* cmd complete msg */
534 #define MSGPH_ABORT 0x03 /* abort seq */
535 #define MSGPH_TERM 0x04 /* current io terminate */
536 #define MSGPH_LCTERM 0x05 /* cmd link terminated */
537 #define MSGPH_RESET 0x06 /* reset target */
540 u_int sl_error; /* error flags */
541 #define FATALIO 0x0001 /* generic io error & retry io */
542 #define ABORTIO 0x0002 /* generic io error & terminate io */
543 #define TIMEOUTIO 0x0004 /* watch dog timeout */
544 #define SELTIMEOUTIO 0x0008 /* selection timeout */
545 #define PDMAERR 0x0010 /* dma xfer error */
546 #define MSGERR 0x0020 /* msgsys error */
547 #define PARITYERR 0x0040 /* parity error */
548 #define BUSYERR 0x0080 /* target busy error */
549 #define STATERR 0x0100 /* status error */
550 #define UACAERR 0x0200 /* target CA state, no sense check */
551 #define SENSEIO 0x1000 /* cmd not excuted but sense data ok */
552 #define SENSEERR 0x2000 /* cmd not excuted and sense data bad */
553 #define UBFERR 0x4000 /* unexpected bus free */
554 #define PENDINGIO 0x8000 /* ccb start not yet */
555 #define SCSI_LOW_ERRORBITS "\020\017ubferr\016senseerr\015senseio\012uacaerr\011staterr\010busy\007parity\006msgerr\005pdmaerr\004seltimeout\003timeout\002abort\001fatal"
557 /* current scsi data pointer */
561 u_int sl_active; /* host is busy state */
562 int sl_powc; /* power down timer counter */
563 u_int sl_rstep; /* resume step */
565 /* configuration flags */
567 #define HW_POWDOWN 0x0001
568 #define HW_RESUME 0x0002
569 #define HW_PDMASTART 0x0004
570 #define HW_INACTIVE 0x0008
571 #define HW_POWERCTRL 0x0010
572 #define HW_INITIALIZING 0x0020
573 #define HW_READ_PADDING 0x1000
574 #define HW_WRITE_PADDING 0x2000
577 #define CFG_NODISC 0x0001
578 #define CFG_NOPARITY 0x0002
579 #define CFG_NOATTEN 0x0004
580 #define CFG_ASYNC 0x0008
581 #define CFG_NOQTAG 0x0010
584 #define SHOW_SYNCH_NEG 0x0001
585 #define SHOW_WIDE_NEG 0x0002
586 #define SHOW_CALCF_RES 0x0010
587 #define SHOW_PROBE_RES 0x0020
588 #define SHOW_ALL_NEG -1
590 /* host informations */
596 /* interface functions */
597 struct scsi_low_funcs *sl_funcs;
602 #if defined(i386) || defined(__i386__)
603 u_int sl_irq; /* XXX */
607 /*************************************************
608 * SCSI LOW service functions
609 *************************************************/
611 * Scsi low attachment function.
613 int scsi_low_attach (struct scsi_low_softc *, int, int, int, int, int);
614 int scsi_low_dettach (struct scsi_low_softc *);
617 * Scsi low interface activate or deactivate functions
619 int scsi_low_is_busy (struct scsi_low_softc *);
620 int scsi_low_activate (struct scsi_low_softc *);
621 int scsi_low_deactivate (struct scsi_low_softc *);
624 * Scsi phase "bus service" functions.
625 * These functions are corresponding to each scsi bus phaeses.
627 /* bus idle phase (other initiators or targets release bus) */
628 void scsi_low_bus_idle (struct scsi_low_softc *);
630 /* arbitration and selection phase */
631 void scsi_low_arbit_fail (struct scsi_low_softc *, struct slccb *);
632 static __inline void scsi_low_arbit_win (struct scsi_low_softc *);
635 #define SCSI_LOW_MSGOUT_INIT 0x00000001
636 #define SCSI_LOW_MSGOUT_UNIFY 0x00000002
637 int scsi_low_msgout (struct scsi_low_softc *, struct targ_info *, u_int);
640 #define SCSI_LOW_DATA_PE 0x80000000
641 int scsi_low_msgin (struct scsi_low_softc *, struct targ_info *, u_int);
644 static __inline int scsi_low_statusin (struct scsi_low_softc *, struct targ_info *, u_int);
647 int scsi_low_data (struct scsi_low_softc *, struct targ_info *, struct buf **, int);
648 static __inline void scsi_low_data_finish (struct scsi_low_softc *);
651 int scsi_low_cmd (struct scsi_low_softc *, struct targ_info *);
653 /* reselection phase */
654 struct targ_info *scsi_low_reselected (struct scsi_low_softc *, u_int);
656 /* disconnection phase */
657 int scsi_low_disconnected (struct scsi_low_softc *, struct targ_info *);
660 * Scsi bus restart function.
661 * Canncel all established nexuses => scsi system initialized => restart jobs.
663 #define SCSI_LOW_RESTART_HARD 1
664 #define SCSI_LOW_RESTART_SOFT 0
665 int scsi_low_restart (struct scsi_low_softc *, int, u_char *);
668 * Scsi utility fucntions
670 /* print current status */
671 void scsi_low_print (struct scsi_low_softc *, struct targ_info *);
673 /* bus reset utility */
674 void scsi_low_bus_reset (struct scsi_low_softc *);
676 /*************************************************
678 *************************************************/
679 #define SCSI_LOW_SETUP_PHASE(ti, phase) \
681 (ti)->ti_ophase = ti->ti_phase; \
682 (ti)->ti_phase = (phase); \
685 #define SCSI_LOW_SETUP_MSGPHASE(slp, PHASE) \
687 (slp)->sl_msgphase = (PHASE); \
690 #define SCSI_LOW_ASSERT_ATN(slp) \
692 (slp)->sl_atten = 1; \
695 #define SCSI_LOW_DEASSERT_ATN(slp) \
697 (slp)->sl_atten = 0; \
700 /*************************************************
702 *************************************************/
703 static __inline void scsi_low_attention (struct scsi_low_softc *);
704 static __inline int scsi_low_is_msgout_continue (struct targ_info *, u_int);
705 static __inline int scsi_low_assert_msg (struct scsi_low_softc *, struct targ_info *, u_int, int);
706 static __inline int scsi_low_is_disconnect_ok (struct slccb *);
709 scsi_low_is_msgout_continue(struct targ_info *ti, u_int mask)
711 return ((ti->ti_msgflags & (~mask)) != 0);
715 scsi_low_is_disconnect_ok(struct slccb *cb)
717 return ((cb->li->li_flags & SCSI_LOW_DISC) != 0 &&
718 (cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) == 0);
722 scsi_low_attention(struct scsi_low_softc *slp)
724 if (slp->sl_atten != 0)
727 (*slp->sl_funcs->scsi_low_attention) (slp);
728 SCSI_LOW_ASSERT_ATN(slp);
732 scsi_low_assert_msg(struct scsi_low_softc *slp, struct targ_info *ti, u_int msg, int now)
734 ti->ti_msgflags |= msg;
736 scsi_low_attention(slp);
741 scsi_low_arbit_win(struct scsi_low_softc *slp)
743 slp->sl_selid = NULL;
747 scsi_low_data_finish(struct scsi_low_softc *slp)
749 if (slp->sl_Qnexus != NULL)
751 slp->sl_Qnexus->ccb_datalen = slp->sl_scp.scp_datalen;
756 scsi_low_statusin(struct scsi_low_softc *slp, struct targ_info *ti, u_int c)
759 if ((c & SCSI_LOW_DATA_PE) != 0)
761 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ERROR, 0);
764 slp->sl_scp.scp_status = (u_int8_t) c;
768 /*************************************************
770 *************************************************/
771 /* XXX: use scsi_message.h */
773 #define ST_CHKCOND 0x02
776 #define ST_INTERGOOD 0x10
777 #define ST_INTERMET 0x14
778 #define ST_CONFLICT 0x18
779 #define ST_CMDTERM 0x22
780 #define ST_QUEFULL 0x28
781 #define ST_UNKNOWN 0xff
783 #define MSG_COMP 0x00
784 #define MSG_EXTEND 0x01
786 #define MKMSG_EXTEND(XLEN, XCODE) ((((u_int)(XLEN)) << NBBY) | ((u_int)(XCODE)))
787 #define MSG_EXTEND_MDPCODE 0x00
788 #define MSG_EXTEND_MDPLEN 0x05
789 #define MSG_EXTEND_SYNCHCODE 0x01
790 #define MSG_EXTEND_SYNCHLEN 0x03
791 #define MSG_EXTEND_WIDECODE 0x03
792 #define MSG_EXTEND_WIDELEN 0x02
794 #define MSG_SAVESP 0x02
795 #define MSG_RESTORESP 0x03
796 #define MSG_DISCON 0x04
797 #define MSG_I_ERROR 0x05
798 #define MSG_ABORT 0x06
799 #define MSG_REJECT 0x07
800 #define MSG_NOOP 0x08
801 #define MSG_PARITY 0x09
802 #define MSG_LCOMP 0x0a
803 #define MSG_LCOMP_F 0x0b
804 #define MSG_RESET 0x0c
805 #define MSG_ABORT_QTAG 0x0d
806 #define MSG_CLEAR_QTAG 0x0e
807 #define MSG_TERM_IO 0x11
808 #define MSG_SIMPLE_QTAG 0x20
809 #define MSG_HEAD_QTAG 0x21
810 #define MSG_ORDERED_QTAG 0x22
811 #define MSG_IDENTIFY 0x80
812 #define MSG_IDENTIFY_DISCPRIV 0x40
813 #endif /* !_SCSI_LOW_H_ */