1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/* $OpenBSD: sshvar.h,v 1.1 2001/02/18 17:41:09 deraadt Exp $ */
/*
* Copyright (c) 1995 Theo de Raadt
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Van Jacobson of Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)sshvar.h 7.1 (Berkeley) 5/8/90
*/
#ifndef _SSHVAR_H_
#define _SSHVAR_H_
/*
* The largest single request will be MAXPHYS bytes which will require
* at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of
* the buffer pages are physically contiguous (MAXPHYS/NBPG) and the
* buffer is not page aligned (+1).
*/
#define DMAMAXIO (MAXPHYS/NBPG+1)
/*
* Data Structure for SCRIPTS program
*/
struct ssh_ds {
/*00*/ long scsi_addr; /* SCSI ID & sync */
/*04*/ long idlen; /* Identify message */
/*08*/ char *idbuf;
/*0c*/ long cmdlen; /* SCSI command */
/*10*/ char *cmdbuf;
/*14*/ long stslen; /* Status */
/*18*/ char *stsbuf;
/*1c*/ long msglen; /* Message */
/*20*/ char *msgbuf;
/*24*/ long msginlen; /* Message in */
/*28*/ char *msginbuf;
/*2c*/ long extmsglen; /* Extended message in */
/*30*/ char *extmsgbuf;
/*34*/ long synmsglen; /* Sync transfer request */
/*38*/ char *synmsgbuf;
struct {
/*3c*/ long datalen;
/*40*/ char *databuf;
} chain[DMAMAXIO];
};
/*
* ACB. Holds additional information for each SCSI command Comments: We
* need a separate scsi command block because we may need to overwrite it
* with a request sense command. Basicly, we refrain from fiddling with
* the scsi_xfer struct (except do the expected updating of return values).
* We'll generally update: xs->{flags,resid,error,sense,status} and
* occasionally xs->retries.
*/
struct ssh_acb {
/*00*/ TAILQ_ENTRY(ssh_acb) chain;
/*08*/ struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
/*0c*/ int flags; /* Status */
#define ACB_FREE 0x00
#define ACB_ACTIVE 0x01
#define ACB_DONE 0x04
#define ACB_CHKSENSE 0x08
/*10*/ struct scsi_generic cmd; /* SCSI command block */
/*1c*/ struct ssh_ds ds;
/*a0*/ void *iob_buf;
/*a4*/ u_long iob_curbuf;
/*a8*/ u_long iob_len, iob_curlen;
/*b0*/ u_char msgout[6];
/*b6*/ u_char msg[6];
/*bc*/ u_char stat[1];
/*bd*/ u_char status;
/*be*/ u_char dummy[2];
/*c0*/ int clen;
/*c4*/ char *daddr; /* Saved data pointer */
/*c8*/ int dleft; /* Residue */
};
/*
* Some info about each (possible) target on the SCSI bus. This should
* probably have been a "per target+lunit" structure, but we'll leave it at
* this for now. Is there a way to reliably hook it up to sc->fordriver??
*/
struct ssh_tinfo {
int cmds; /* #commands processed */
int dconns; /* #disconnects */
int touts; /* #timeouts */
int perrs; /* #parity errors */
int senses; /* #request sense commands sent */
ushort lubusy; /* What local units/subr. are busy? */
u_char flags;
u_char period; /* Period suggestion */
u_char offset; /* Offset suggestion */
} tinfo_t;
struct ssh_softc {
struct device sc_dev;
struct intrhand sc_ih;
struct evcnt sc_intrcnt;
u_char sc_istat;
u_char sc_dstat;
u_char sc_sstat0;
u_char sc_sstat1;
u_long sc_intcode;
struct scsi_link sc_link; /* proto for sub devices */
u_long sc_scriptspa; /* physical address of scripts */
ssh_regmap_p sc_sshp; /* the SSH */
u_long sc_active; /* number of active I/O's */
/* Lists of command blocks */
TAILQ_HEAD(acb_list, ssh_acb) free_list,
ready_list,
nexus_list;
struct ssh_acb *sc_nexus; /* current command */
#define SSH_NACB 8
struct ssh_acb *sc_acb; /* the real command blocks */
struct ssh_tinfo sc_tinfo[8];
u_short sc_clock_freq;
u_char sc_dcntl;
u_char sc_ctest7;
u_short sc_tcp[4];
u_char sc_flags;
u_char sc_sien;
u_char sc_dien;
u_char sc_minsync;
/* one for each target */
struct syncpar {
u_char state;
u_char sxfer;
u_char sbcl;
} sc_sync[8];
};
/* sc_flags */
#define SSH_INTSOFF 0x80 /* Interrupts turned off */
#define SSH_INTDEFER 0x40 /* Level 6 interrupt has been deferred */
#define SSH_ALIVE 0x01 /* controller initialized */
#define SSH_SELECTED 0x04 /* bus is in selected state. Needed for
correct abort procedure. */
/* sync states */
#define SYNC_START 0 /* no sync handshake started */
#define SYNC_SENT 1 /* we sent sync request, no answer yet */
#define SYNC_DONE 2 /* target accepted our (or inferior) settings,
or it rejected the request and we stay async */
#define MSG_CMD_COMPLETE 0x00
#define MSG_EXT_MESSAGE 0x01
#define MSG_SAVE_DATA_PTR 0x02
#define MSG_RESTORE_PTR 0x03
#define MSG_DISCONNECT 0x04
#define MSG_INIT_DETECT_ERROR 0x05
#define MSG_ABORT 0x06
#define MSG_REJECT 0x07
#define MSG_NOOP 0x08
#define MSG_PARITY_ERROR 0x09
#define MSG_BUS_DEVICE_RESET 0x0C
#define MSG_IDENTIFY 0x80
#define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */
#define MSG_SYNC_REQ 0x01
#define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */
#define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */
#define STS_BUSY 0x08
#define STS_INTERMED 0x10 /* Intermediate status sent */
#define STS_EXT 0x80 /* Extended status valid */
void ssh_minphys __P((struct buf *bp));
int ssh_scsicmd __P((struct scsi_xfer *));
#endif /* _SSHVAR_H */
|
