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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/* $OpenBSD: mb89352var.h,v 1.4 2004/12/22 21:07:29 miod Exp $ */
/* $NetBSD: mb89352var.h,v 1.6 2003/08/02 12:48:09 tsutsui Exp $ */
/* NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp */
/*-
* Copyright (c) 1996,97,98,99 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum, Masaru Oki and Kouichi Matsuda.
*
* 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 Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Copyright (c) 1994 Jarle Greipsland
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* [NetBSD for NEC PC-98 series]
* Copyright (c) 1996, 1997, 1998
* NetBSD/pc98 porting staff. All rights reserved.
* Copyright (c) 1996, 1997, 1998
* Kouich Matsuda. All rights reserved.
*/
#ifndef _MB89352VAR_H_
#define _MB89352VAR_H_
/*
* 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 spc_acb {
struct scsi_generic scsi_cmd;
int scsi_cmd_length;
u_char *data_addr; /* Saved data pointer */
int data_length; /* Residue */
u_char target_stat; /* SCSI status byte */
#ifdef notdef
struct spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */
#endif
TAILQ_ENTRY(spc_acb) chain;
struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
int flags;
#define ACB_ALLOC 0x01
#define ACB_NEXUS 0x02
#define ACB_SENSE 0x04
#define ACB_ABORT 0x40
#define ACB_RESET 0x80
int timeout;
};
/*
* 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.
*/
struct spc_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;
#define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */
#define DO_WIDE 0x02 /* (Re)Negotiate wide options */
u_char period; /* Period suggestion */
u_char offset; /* Offset suggestion */
u_char width; /* Width suggestion */
};
struct spc_softc {
struct device sc_dev;
volatile u_int8_t *sc_regs;
struct scsi_link sc_link; /* prototype for subdevs */
TAILQ_HEAD(, spc_acb) free_list, ready_list, nexus_list;
struct spc_acb *sc_nexus; /* current command */
struct spc_acb sc_acb[8];
struct spc_tinfo sc_tinfo[8];
/* Data about the current nexus (updated for every cmd switch) */
u_char *sc_dp; /* Current data pointer */
size_t sc_dleft; /* Data bytes left to transfer */
u_char *sc_cp; /* Current command pointer */
size_t sc_cleft; /* Command bytes left to transfer */
/* Adapter state */
u_char sc_phase; /* Current bus phase */
u_char sc_prevphase; /* Previous bus phase */
u_char sc_state; /* State applicable to the adapter */
#define SPC_INIT 0
#define SPC_IDLE 1
#define SPC_SELECTING 2 /* SCSI command is arbiting */
#define SPC_RESELECTED 3 /* Has been reselected */
#define SPC_CONNECTED 4 /* Actively using the SCSI bus */
#define SPC_DISCONNECT 5 /* MSG_DISCONNECT received */
#define SPC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */
#define SPC_CLEANING 7
u_char sc_flags;
#define SPC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */
#define SPC_ABORTING 0x02 /* Bailing out */
#define SPC_DOINGDMA 0x04 /* doing DMA */
#define SPC_INACTIVE 0x80 /* The FIFO data path is active! */
u_char sc_selid; /* Reselection ID */
/* Message stuff */
u_char sc_msgpriq; /* Messages we want to send */
u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */
u_char sc_lastmsg; /* Message last transmitted */
u_char sc_currmsg; /* Message currently ready to transmit */
#define SEND_DEV_RESET 0x01
#define SEND_PARITY_ERROR 0x02
#define SEND_INIT_DET_ERR 0x04
#define SEND_REJECT 0x08
#define SEND_IDENTIFY 0x10
#define SEND_ABORT 0x20
#define SEND_SDTR 0x40
#define SEND_WDTR 0x80
#define SPC_MAX_MSG_LEN 8
u_char sc_omess[SPC_MAX_MSG_LEN];
u_char *sc_omp; /* Outgoing message pointer */
u_char sc_imess[SPC_MAX_MSG_LEN];
u_char *sc_imp; /* Incoming message pointer */
/* Hardware stuff */
int sc_initiator; /* Our scsi id */
int sc_freq; /* Clock frequency in MHz */
int sc_minsync; /* Minimum sync period / 4 */
int sc_maxsync; /* Maximum sync period / 4 */
int sc_ctlflags;
/* DMA function set from MD code */
int (*sc_dma_start)(struct spc_softc *, void *, size_t, int);
void (*sc_dma_done)(struct spc_softc *);
/* Reset hook */
void (*sc_reset)(struct spc_softc *);
};
#ifdef SPC_DEBUG
#define SPC_SHOWACBS 0x01
#define SPC_SHOWINTS 0x02
#define SPC_SHOWCMDS 0x04
#define SPC_SHOWMISC 0x08
#define SPC_SHOWTRACE 0x10
#define SPC_SHOWSTART 0x20
#define SPC_DOBREAK 0x40
extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */
#define SPC_PRINT(b, s) do {if ((spc_debug & (b)) != 0) printf s;} while (0)
#define SPC_BREAK() do {if ((spc_debug & SPC_DOBREAK) != 0) Debugger();} while (0)
#define SPC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); Debugger();}} while (0)
#else
#define SPC_PRINT(b, s)
#define SPC_BREAK()
#define SPC_ASSERT(x)
#endif
#define SPC_ACBS(s) SPC_PRINT(SPC_SHOWACBS, s)
#define SPC_INTS(s) SPC_PRINT(SPC_SHOWINTS, s)
#define SPC_CMDS(s) SPC_PRINT(SPC_SHOWCMDS, s)
#define SPC_MISC(s) SPC_PRINT(SPC_SHOWMISC, s)
#define SPC_TRACE(s) SPC_PRINT(SPC_SHOWTRACE, s)
#define SPC_START(s) SPC_PRINT(SPC_SHOWSTART, s)
void spc_attach(struct spc_softc *);
int spc_intr(void *);
void spc_init(struct spc_softc *);
void spc_sched(struct spc_softc *);
int spc_scsi_cmd(struct scsi_xfer *);
void spc_reset(struct spc_softc *);
#define SPC_ADDRESS(o) (sc->sc_regs + ((o) << 1) + 1)
#define spc_read(o) *(volatile u_int8_t *)(SPC_ADDRESS(o))
#define spc_write(o, v) *(volatile u_int8_t *)(SPC_ADDRESS(o)) = (v)
#endif /* _MB89352VAR_H_ */
|
