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 1.7 2004/09/17 02:38:10 joerg 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_SPLSCSI splcam
64 #define SCSI_LOW_BZERO(pt, size) bzero((pt), (size))
66 typedef struct scsi_sense_data scsi_low_osdep_sense_data_t;
68 struct scsi_low_osdep_interface {
69 DEVPORT_DEVICE si_dev;
72 struct cam_path *path;
76 struct callout engage_ch;
77 struct callout timeout_ch;
80 struct scsi_low_osdep_targ_interface {
83 struct scsi_low_osdep_lun_interface {
86 /******** os depend interface functions *************/
88 struct scsi_low_softc;
89 #define SCSI_LOW_TIMEOUT_STOP 0
90 #define SCSI_LOW_TIMEOUT_START 1
91 #define SCSI_LOW_TIMEOUT_CH_IO 0
92 #define SCSI_LOW_TIMEOUT_CH_ENGAGE 1
93 #define SCSI_LOW_TIMEOUT_CH_RECOVER 2
95 struct scsi_low_osdep_funcs {
96 int (*scsi_low_osdep_attach) \
97 (struct scsi_low_softc *);
98 int (*scsi_low_osdep_world_start) \
99 (struct scsi_low_softc *);
100 int (*scsi_low_osdep_dettach) \
101 (struct scsi_low_softc *);
102 int (*scsi_low_osdep_ccb_setup) \
103 (struct scsi_low_softc *, struct slccb *);
104 int (*scsi_low_osdep_done) \
105 (struct scsi_low_softc *, struct slccb *);
106 void (*scsi_low_osdep_timeout) \
107 (struct scsi_low_softc *, int, int);
110 /*================================================
111 * Generic Scsi Low header file
112 * (All os depend structures should be above!)
113 ================================================*/
114 /*************************************************
115 * Scsi low definitions
116 *************************************************/
117 #define SCSI_LOW_SYNC DVF_SCSI_SYNC
118 #define SCSI_LOW_DISC DVF_SCSI_DISC
119 #define SCSI_LOW_WAIT DVF_SCSI_WAIT
120 #define SCSI_LOW_LINK DVF_SCSI_LINK
121 #define SCSI_LOW_QTAG DVF_SCSI_QTAG
122 #define SCSI_LOW_NOPARITY DVF_SCSI_NOPARITY
123 #define SCSI_LOW_SAVESP DVF_SCSI_SAVESP
124 #define SCSI_LOW_DEFCFG DVF_SCSI_DEFCFG
125 #define SCSI_LOW_BITS DVF_SCSI_BITS
127 #define SCSI_LOW_PERIOD(n) DVF_SCSI_PERIOD(n)
128 #define SCSI_LOW_OFFSET(n) DVF_SCSI_OFFSET(n)
130 /* host scsi id and targets macro */
131 #ifndef SCSI_LOW_NTARGETS
132 #define SCSI_LOW_NTARGETS 8
133 #endif /* SCSI_LOW_NTARGETS */
134 #define SCSI_LOW_NCCB 128
136 #define SCSI_LOW_MAX_RETRY 3
137 #define SCSI_LOW_MAX_SELECTION_RETRY 10
139 /* timeout control macro */
140 #define SCSI_LOW_TIMEOUT_HZ 10
141 #define SCSI_LOW_MIN_TOUT 12
142 #define SCSI_LOW_TIMEOUT_CHECK_INTERVAL 1
143 #define SCSI_LOW_POWDOWN_TC 15
144 #define SCSI_LOW_MAX_PHCHANGES 256
145 #define SCSI2_RESET_DELAY 5000000
148 #define SCSI_LOW_MAX_MSGLEN 32
149 #define SCSI_LOW_MSG_LOG_DATALEN 8
151 /*************************************************
153 *************************************************/
162 u_int8_t scp_direction;
163 #define SCSI_LOW_RWUNK (-1)
164 #define SCSI_LOW_WRITE 0
165 #define SCSI_LOW_READ 1
167 u_int8_t scp_spare[2];
170 /*************************************************
171 * Command Control Block Structure
172 *************************************************/
173 typedef int scsi_low_tag_t;
176 #define SCSI_LOW_UNKLUN ((u_int) -1)
177 #define SCSI_LOW_UNKTAG ((scsi_low_tag_t) -1)
180 TAILQ_ENTRY(slccb) ccb_chain;
182 void *osdep; /* os depend structure */
184 struct targ_info *ti; /* targ_info */
185 struct lun_info *li; /* lun info */
186 struct buf *bp; /* io bufs */
188 scsi_low_tag_t ccb_tag; /* effective qtag */
189 scsi_low_tag_t ccb_otag; /* allocated qtag */
191 /*****************************************
192 * Scsi data pointers (original and saved)
193 *****************************************/
194 struct sc_p ccb_scp; /* given */
195 struct sc_p ccb_sscp; /* saved scsi data pointer */
196 int ccb_datalen; /* transfered data counter */
198 /*****************************************
200 *****************************************/
201 u_int ccb_msgoutflag;
202 u_int ccb_omsgoutflag;
204 /*****************************************
205 * Error or Timeout counters
206 *****************************************/
208 #define CCB_INTERNAL 0x0001
209 #define CCB_SENSE 0x0002
210 #define CCB_CLEARQ 0x0004
211 #define CCB_DISCQ 0x0008
212 #define CCB_STARTQ 0x0010
213 #define CCB_POLLED 0x0100 /* polling ccb */
214 #define CCB_NORETRY 0x0200 /* do NOT retry */
215 #define CCB_AUTOSENSE 0x0400 /* do a sence after CA */
216 #define CCB_URGENT 0x0800 /* an urgent ccb */
217 #define CCB_NOSDONE 0x1000 /* do not call an os done routine */
218 #define CCB_SCSIIO 0x2000 /* a normal scsi io coming from upper layer */
219 #define CCB_SILENT 0x4000 /* no terminate messages */
223 int ccb_rcnt; /* retry counter */
224 int ccb_selrcnt; /* selection retry counter */
225 int ccb_tc; /* timer counter */
226 int ccb_tcmax; /* max timeout */
228 /*****************************************
230 *****************************************/
231 u_int8_t ccb_scsi_cmd[12];
232 scsi_low_osdep_sense_data_t ccb_sense;
235 /*************************************************
237 *************************************************/
238 GENERIC_CCB_ASSERT(scsi_low, slccb)
240 /*************************************************
241 * Target and Lun structures
242 *************************************************/
243 struct scsi_low_softc;
244 LIST_HEAD(scsi_low_softc_tab, scsi_low_softc);
245 TAILQ_HEAD(targ_info_tab, targ_info);
246 LIST_HEAD(lun_info_tab, lun_info);
249 struct scsi_low_osdep_lun_interface li_sloi;
252 struct targ_info *li_ti; /* my target */
254 LIST_ENTRY(lun_info) lun_chain; /* targ_info link */
256 struct slccbtab li_discq; /* disconnect queue */
266 #define SCSI_LOW_MAXNEXUS (sizeof(u_int) * NBBY)
269 #ifdef SCSI_LOW_ALT_QTAG_ALLOCATE
270 u_int8_t li_qtagarray[SCSI_LOW_MAXNEXUS];
272 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
274 #define SCSI_LOW_QFLAG_CA_QCLEAR 0x01
280 #define SCSI_LOW_LUN_SLEEP 0x00
281 #define SCSI_LOW_LUN_START 0x01
282 #define SCSI_LOW_LUN_INQ 0x02
283 #define SCSI_LOW_LUN_MODEQ 0x03
284 #define SCSI_LOW_LUN_OK 0x04
285 u_int li_state; /* target lun state */
290 u_int li_flags_valid; /* valid flags */
291 #define SCSI_LOW_LUN_FLAGS_USER_VALID 0x0001
292 #define SCSI_LOW_LUN_FLAGS_DISK_VALID 0x0002
293 #define SCSI_LOW_LUN_FLAGS_QUIRKS_VALID 0x0004
294 #define SCSI_LOW_LUN_FLAGS_ALL_VALID \
295 (SCSI_LOW_LUN_FLAGS_USER_VALID | \
296 SCSI_LOW_LUN_FLAGS_DISK_VALID | SCSI_LOW_LUN_FLAGS_QUIRKS_VALID)
298 u_int li_flags; /* real lun control flags */
299 u_int li_cfgflags; /* lun control flags given by user */
300 u_int li_diskflags; /* lun control flags given by hardware info */
301 u_int li_quirks; /* lun control flags given by upper layer */
304 struct scsi_low_inq_data {
312 } __attribute__((packed)) li_inq;
315 struct scsi_low_mode_sense_data {
316 u_int8_t sms_header[4];
323 u_int8_t cmp_spare[3];
324 } __attribute__((packed)) sms_cmp;
329 struct scsi_low_msg_log {
333 } slml_msg[SCSI_LOW_MSG_LOG_DATALEN];
337 struct scsi_low_osdep_targ_interface ti_slti;
339 TAILQ_ENTRY(targ_info) ti_chain; /* targ_info link */
341 struct scsi_low_softc *ti_sc; /* our softc */
342 u_int ti_id; /* scsi id */
347 struct lun_info_tab ti_litab; /* lun chain */
350 * total disconnected nexus
359 #define PH_ARBSTART 0x01
360 #define PH_SELSTART 0x02
361 #define PH_SELECTED 0x03
364 #define PH_MSGIN 0x06
365 #define PH_MSGOUT 0x07
368 #define PH_RESEL 0x0a
369 u_int ti_phase; /* scsi phase */
370 u_int ti_ophase; /* old scsi phase */
375 u_int ti_msginptr; /* msgin ptr */
376 u_int ti_msginlen; /* expected msg length */
377 int ti_msgin_parity_error; /* parity error detected */
378 u_int8_t ti_msgin[SCSI_LOW_MAX_MSGLEN]; /* msgin buffer */
383 u_int ti_msgflags; /* msgs to be asserted */
384 u_int ti_omsgflags; /* msgs asserted */
385 u_int ti_emsgflags; /* a msg currently asserted */
386 #define SCSI_LOW_MSG_RESET 0x00000001
387 #define SCSI_LOW_MSG_REJECT 0x00000002
388 #define SCSI_LOW_MSG_PARITY 0x00000004
389 #define SCSI_LOW_MSG_ERROR 0x00000008
390 #define SCSI_LOW_MSG_IDENTIFY 0x00000010
391 #define SCSI_LOW_MSG_ABORT 0x00000020
392 #define SCSI_LOW_MSG_TERMIO 0x00000040
393 #define SCSI_LOW_MSG_SIMPLE_QTAG 0x00000080
394 #define SCSI_LOW_MSG_ORDERED_QTAG 0x00000100
395 #define SCSI_LOW_MSG_HEAD_QTAG 0x00000200
396 #define SCSI_LOW_MSG_ABORT_QTAG 0x00000400
397 #define SCSI_LOW_MSG_CLEAR_QTAG 0x00000800
398 #define SCSI_LOW_MSG_WIDE 0x00001000
399 #define SCSI_LOW_MSG_SYNCH 0x00002000
400 #define SCSI_LOW_MSG_NOOP 0x00004000
401 #define SCSI_LOW_MSG_LAST 0x00008000
402 #define SCSI_LOW_MSG_ALL 0xffffffff
405 u_int8_t ti_msgoutstr[SCSI_LOW_MAX_MSGLEN]; /* scsi msgout */
406 u_int ti_msgoutlen; /* msgout strlen */
409 * target initialize msgout
411 u_int ti_setup_msg; /* setup msgout requests */
412 u_int ti_setup_msg_done;
415 * synch and wide data info
417 u_int ti_flags_valid; /* valid flags */
418 #define SCSI_LOW_TARG_FLAGS_USER_VALID 0x0001
419 #define SCSI_LOW_TARG_FLAGS_DISK_VALID 0x0002
420 #define SCSI_LOW_TARG_FLAGS_QUIRKS_VALID 0x0004
421 #define SCSI_LOW_TARG_FLAGS_ALL_VALID \
422 (SCSI_LOW_TARG_FLAGS_USER_VALID | \
423 SCSI_LOW_TARG_FLAGS_DISK_VALID | SCSI_LOW_TARG_FLAGS_QUIRKS_VALID)
425 u_int ti_diskflags; /* given target disk flags */
426 u_int ti_quirks; /* given target quirk */
431 } ti_osynch, ti_maxsynch; /* synch data */
433 #define SCSI_LOW_BUS_WIDTH_8 0
434 #define SCSI_LOW_BUS_WIDTH_16 1
435 #define SCSI_LOW_BUS_WIDTH_32 2
436 u_int ti_owidth, ti_width;
443 #ifdef SCSI_LOW_DIAGNOSTIC
444 struct scsi_low_msg_log ti_log_msgout;
445 struct scsi_low_msg_log ti_log_msgin;
446 #endif /* SCSI_LOW_DIAGNOSTIC */
449 /*************************************************
450 * COMMON HEADER STRUCTURE
451 *************************************************/
452 struct scsi_low_softc;
454 typedef struct scsi_low_softc *sc_low_t;
456 #define SCSI_LOW_START_OK 0
457 #define SCSI_LOW_START_FAIL 1
458 #define SCSI_LOW_INFO_ALLOC 0
459 #define SCSI_LOW_INFO_REVOKE 1
460 #define SCSI_LOW_INFO_DEALLOC 2
461 #define SCSI_LOW_POWDOWN 1
462 #define SCSI_LOW_ENGAGE 2
464 #define SC_LOW_INIT_T (int (*) (sc_low_t, int))
465 #define SC_LOW_BUSRST_T (void (*) (sc_low_t))
466 #define SC_LOW_TARG_INIT_T (int (*) (sc_low_t, struct targ_info *, int))
467 #define SC_LOW_LUN_INIT_T (int (*) (sc_low_t, struct targ_info *, struct lun_info *, int))
468 #define SC_LOW_SELECT_T (int (*) (sc_low_t, struct slccb *))
469 #define SC_LOW_ATTEN_T (void (*) (sc_low_t))
470 #define SC_LOW_NEXUS_T (int (*) (sc_low_t))
471 #define SC_LOW_MSG_T (int (*) (sc_low_t, struct targ_info *, u_int))
472 #define SC_LOW_POLL_T (int (*) (void *))
473 #define SC_LOW_POWER_T (int (*) (sc_low_t, u_int))
474 #define SC_LOW_TIMEOUT_T (int (*) (sc_low_t))
476 struct scsi_low_funcs {
477 int (*scsi_low_init) (sc_low_t, int);
478 void (*scsi_low_bus_reset) (sc_low_t);
479 int (*scsi_low_targ_init) (sc_low_t, struct targ_info *, int);
480 int (*scsi_low_lun_init) (sc_low_t, struct targ_info *, struct lun_info *, int);
481 int (*scsi_low_start_bus) (sc_low_t, struct slccb *);
482 int (*scsi_low_establish_lun_nexus) (sc_low_t);
483 int (*scsi_low_establish_ccb_nexus) (sc_low_t);
484 void (*scsi_low_attention) (sc_low_t);
485 int (*scsi_low_msg) (sc_low_t, struct targ_info *, u_int);
486 int (*scsi_low_timeout) (sc_low_t);
487 int (*scsi_low_poll) (void *);
488 int (*scsi_low_power) (sc_low_t, u_int);
489 int (*scsi_low_ioctl) (sc_low_t, u_long, caddr_t, int, struct proc *);
492 struct scsi_low_softc {
493 /* os depend structure */
494 struct scsi_low_osdep_interface sl_si;
495 #define sl_dev sl_si.si_dev
496 struct scsi_low_osdep_funcs *sl_osdep_fp;
500 LIST_ENTRY(scsi_low_softc) sl_chain;
503 struct targ_info *sl_ti[SCSI_LOW_NTARGETS];
504 struct targ_info_tab sl_titab;
506 /* current active T_L_Q nexus */
507 struct targ_info *sl_Tnexus; /* Target nexus */
508 struct lun_info *sl_Lnexus; /* Lun nexus */
509 struct slccb *sl_Qnexus; /* Qtag nexus */
512 /* ccb start queue */
513 struct slccbtab sl_start;
515 /* retry limit and phase change counter */
518 int sl_timeout_count;
520 /* selection & total num disconnect targets */
524 struct slccb *sl_selid;
527 int sl_atten; /* ATN asserted */
528 int sl_clear_atten; /* negate ATN required */
530 /* scsi phase suggested by scsi msg */
532 #define MSGPH_NULL 0x00 /* no msg */
533 #define MSGPH_DISC 0x01 /* disconnect msg */
534 #define MSGPH_CMDC 0x02 /* cmd complete msg */
535 #define MSGPH_ABORT 0x03 /* abort seq */
536 #define MSGPH_TERM 0x04 /* current io terminate */
537 #define MSGPH_LCTERM 0x05 /* cmd link terminated */
538 #define MSGPH_RESET 0x06 /* reset target */
541 u_int sl_error; /* error flags */
542 #define FATALIO 0x0001 /* generic io error & retry io */
543 #define ABORTIO 0x0002 /* generic io error & terminate io */
544 #define TIMEOUTIO 0x0004 /* watch dog timeout */
545 #define SELTIMEOUTIO 0x0008 /* selection timeout */
546 #define PDMAERR 0x0010 /* dma xfer error */
547 #define MSGERR 0x0020 /* msgsys error */
548 #define PARITYERR 0x0040 /* parity error */
549 #define BUSYERR 0x0080 /* target busy error */
550 #define STATERR 0x0100 /* status error */
551 #define UACAERR 0x0200 /* target CA state, no sense check */
552 #define SENSEIO 0x1000 /* cmd not excuted but sense data ok */
553 #define SENSEERR 0x2000 /* cmd not excuted and sense data bad */
554 #define UBFERR 0x4000 /* unexpected bus free */
555 #define PENDINGIO 0x8000 /* ccb start not yet */
556 #define SCSI_LOW_ERRORBITS "\020\017ubferr\016senseerr\015senseio\012uacaerr\011staterr\010busy\007parity\006msgerr\005pdmaerr\004seltimeout\003timeout\002abort\001fatal"
558 /* current scsi data pointer */
562 u_int sl_active; /* host is busy state */
563 int sl_powc; /* power down timer counter */
564 u_int sl_rstep; /* resume step */
566 /* configuration flags */
568 #define HW_POWDOWN 0x0001
569 #define HW_RESUME 0x0002
570 #define HW_PDMASTART 0x0004
571 #define HW_INACTIVE 0x0008
572 #define HW_POWERCTRL 0x0010
573 #define HW_INITIALIZING 0x0020
574 #define HW_READ_PADDING 0x1000
575 #define HW_WRITE_PADDING 0x2000
578 #define CFG_NODISC 0x0001
579 #define CFG_NOPARITY 0x0002
580 #define CFG_NOATTEN 0x0004
581 #define CFG_ASYNC 0x0008
582 #define CFG_NOQTAG 0x0010
585 #define SHOW_SYNCH_NEG 0x0001
586 #define SHOW_WIDE_NEG 0x0002
587 #define SHOW_CALCF_RES 0x0010
588 #define SHOW_PROBE_RES 0x0020
589 #define SHOW_ALL_NEG -1
591 /* host informations */
597 /* interface functions */
598 struct scsi_low_funcs *sl_funcs;
603 #if defined(i386) || defined(__i386__)
604 u_int sl_irq; /* XXX */
608 /*************************************************
609 * SCSI LOW service functions
610 *************************************************/
612 * Scsi low attachment function.
614 int scsi_low_attach (struct scsi_low_softc *, int, int, int, int, int);
615 int scsi_low_dettach (struct scsi_low_softc *);
618 * Scsi low interface activate or deactivate functions
620 int scsi_low_is_busy (struct scsi_low_softc *);
621 int scsi_low_activate (struct scsi_low_softc *);
622 int scsi_low_deactivate (struct scsi_low_softc *);
625 * Scsi phase "bus service" functions.
626 * These functions are corresponding to each scsi bus phaeses.
628 /* bus idle phase (other initiators or targets release bus) */
629 void scsi_low_bus_idle (struct scsi_low_softc *);
631 /* arbitration and selection phase */
632 void scsi_low_arbit_fail (struct scsi_low_softc *, struct slccb *);
633 static __inline void scsi_low_arbit_win (struct scsi_low_softc *);
636 #define SCSI_LOW_MSGOUT_INIT 0x00000001
637 #define SCSI_LOW_MSGOUT_UNIFY 0x00000002
638 int scsi_low_msgout (struct scsi_low_softc *, struct targ_info *, u_int);
641 #define SCSI_LOW_DATA_PE 0x80000000
642 int scsi_low_msgin (struct scsi_low_softc *, struct targ_info *, u_int);
645 static __inline int scsi_low_statusin (struct scsi_low_softc *, struct targ_info *, u_int);
648 int scsi_low_data (struct scsi_low_softc *, struct targ_info *, struct buf **, int);
649 static __inline void scsi_low_data_finish (struct scsi_low_softc *);
652 int scsi_low_cmd (struct scsi_low_softc *, struct targ_info *);
654 /* reselection phase */
655 struct targ_info *scsi_low_reselected (struct scsi_low_softc *, u_int);
657 /* disconnection phase */
658 int scsi_low_disconnected (struct scsi_low_softc *, struct targ_info *);
661 * Scsi bus restart function.
662 * Canncel all established nexuses => scsi system initialized => restart jobs.
664 #define SCSI_LOW_RESTART_HARD 1
665 #define SCSI_LOW_RESTART_SOFT 0
666 int scsi_low_restart (struct scsi_low_softc *, int, u_char *);
669 * Scsi utility fucntions
671 /* print current status */
672 void scsi_low_print (struct scsi_low_softc *, struct targ_info *);
674 /* bus reset utility */
675 void scsi_low_bus_reset (struct scsi_low_softc *);
677 /*************************************************
679 *************************************************/
680 #define SCSI_LOW_SETUP_PHASE(ti, phase) \
682 (ti)->ti_ophase = ti->ti_phase; \
683 (ti)->ti_phase = (phase); \
686 #define SCSI_LOW_SETUP_MSGPHASE(slp, PHASE) \
688 (slp)->sl_msgphase = (PHASE); \
691 #define SCSI_LOW_ASSERT_ATN(slp) \
693 (slp)->sl_atten = 1; \
696 #define SCSI_LOW_DEASSERT_ATN(slp) \
698 (slp)->sl_atten = 0; \
701 /*************************************************
703 *************************************************/
704 static __inline void scsi_low_attention (struct scsi_low_softc *);
705 static __inline int scsi_low_is_msgout_continue (struct targ_info *, u_int);
706 static __inline int scsi_low_assert_msg (struct scsi_low_softc *, struct targ_info *, u_int, int);
707 static __inline int scsi_low_is_disconnect_ok (struct slccb *);
710 scsi_low_is_msgout_continue(ti, mask)
711 struct targ_info *ti;
715 return ((ti->ti_msgflags & (~mask)) != 0);
719 scsi_low_is_disconnect_ok(cb)
723 return ((cb->li->li_flags & SCSI_LOW_DISC) != 0 &&
724 (cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) == 0);
728 scsi_low_attention(slp)
729 struct scsi_low_softc *slp;
732 if (slp->sl_atten != 0)
735 (*slp->sl_funcs->scsi_low_attention) (slp);
736 SCSI_LOW_ASSERT_ATN(slp);
740 scsi_low_assert_msg(slp, ti, msg, now)
741 struct scsi_low_softc *slp;
742 struct targ_info *ti;
747 ti->ti_msgflags |= msg;
749 scsi_low_attention(slp);
754 scsi_low_arbit_win(slp)
755 struct scsi_low_softc *slp;
758 slp->sl_selid = NULL;
762 scsi_low_data_finish(slp)
763 struct scsi_low_softc *slp;
766 if (slp->sl_Qnexus != NULL)
768 slp->sl_Qnexus->ccb_datalen = slp->sl_scp.scp_datalen;
773 scsi_low_statusin(slp, ti, c)
774 struct scsi_low_softc *slp;
775 struct targ_info *ti;
780 if ((c & SCSI_LOW_DATA_PE) != 0)
782 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ERROR, 0);
785 slp->sl_scp.scp_status = (u_int8_t) c;
789 /*************************************************
791 *************************************************/
792 /* XXX: use scsi_message.h */
794 #define ST_CHKCOND 0x02
797 #define ST_INTERGOOD 0x10
798 #define ST_INTERMET 0x14
799 #define ST_CONFLICT 0x18
800 #define ST_CMDTERM 0x22
801 #define ST_QUEFULL 0x28
802 #define ST_UNKNOWN 0xff
804 #define MSG_COMP 0x00
805 #define MSG_EXTEND 0x01
807 #define MKMSG_EXTEND(XLEN, XCODE) ((((u_int)(XLEN)) << NBBY) | ((u_int)(XCODE)))
808 #define MSG_EXTEND_MDPCODE 0x00
809 #define MSG_EXTEND_MDPLEN 0x05
810 #define MSG_EXTEND_SYNCHCODE 0x01
811 #define MSG_EXTEND_SYNCHLEN 0x03
812 #define MSG_EXTEND_WIDECODE 0x03
813 #define MSG_EXTEND_WIDELEN 0x02
815 #define MSG_SAVESP 0x02
816 #define MSG_RESTORESP 0x03
817 #define MSG_DISCON 0x04
818 #define MSG_I_ERROR 0x05
819 #define MSG_ABORT 0x06
820 #define MSG_REJECT 0x07
821 #define MSG_NOOP 0x08
822 #define MSG_PARITY 0x09
823 #define MSG_LCOMP 0x0a
824 #define MSG_LCOMP_F 0x0b
825 #define MSG_RESET 0x0c
826 #define MSG_ABORT_QTAG 0x0d
827 #define MSG_CLEAR_QTAG 0x0e
828 #define MSG_TERM_IO 0x11
829 #define MSG_SIMPLE_QTAG 0x20
830 #define MSG_HEAD_QTAG 0x21
831 #define MSG_ORDERED_QTAG 0x22
832 #define MSG_IDENTIFY 0x80
833 #define MSG_IDENTIFY_DISCPRIV 0x40
834 #endif /* !_SCSI_LOW_H_ */