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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/* $NetBSD: espvar.h,v 1.3 1994/11/20 20:52:12 deraadt Exp $ */
/*
* Copyright (c) 1995 Theo de Raadt
*
* 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 under OpenBSD by
* Theo de Raadt.
* 4. 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.
*
* Copyright (c) 1994 Peter Galbavy. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Peter Galbavy.
* 4. 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.
*/
/* esp chip revisions */
#define ESP100 0
#define ESP100A 1
#define ESP200 2
/* Grabbed from Julians SCSI aha-drivers */
#ifdef DDB
int Debugger();
#else DDB
#define Debugger() panic("should call debugger here (esp.c)")
#endif DDB
#define ESP_MSGLEN_MAX 8 /* maximum msglen we handle */
#define ESP_SYNC_REQOFF 0 /* offset we request */
#define ESP_SYNC_MAXOFF 15 /* maximum supportable sync offset */
#if ESP_SYNC_REQOFF > ESP_SYNC_MAXOFF
#warning requested sync offset is higher than maximum possible sync offset.
#endif
#define FREQTOCCF(freq) (((freq + 4) / 5))
/*
* ECB. 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. Basically, 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 ecb {
TAILQ_ENTRY(ecb) chain;
struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
int flags; /* Status */
#define ECB_FREE 0x00
#define ECB_ACTIVE 0x01
#define ECB_DONE 0x04
#define ECB_CHKSENSE 0x08
struct scsi_generic cmd; /* SCSI command block */
int clen;
caddr_t daddr; /* Saved data pointer */
int dleft; /* Residue */
int stat; /* SCSI status byte */
};
/*
* 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 esp_tinfo {
int cmds; /* #commands processed */
int dconns; /* #disconnects */
int touts; /* #timeouts */
int perrs; /* #parity errors */
int senses; /* #request sense commands sent */
u_char lubusy; /* What luns are busy? */
u_char flags;
#define DO_NEGOTIATE 0x01 /* (re)negotiate synchronous options */
#define TARGET_BUSY 0x02 /* target is busy, i.e. cmd in progress */
u_char period; /* sync period */
u_char synctp; /* sync period translated for SYNCTP */
u_char offset; /* sync offset */
};
/* Register a linenumber (for debugging) */
#define LOGLINE(p)
#define ESP_SHOWECBS 0x01
#define ESP_SHOWINTS 0x02
#define ESP_SHOWCMDS 0x04
#define ESP_SHOWMISC 0x08
#define ESP_SHOWTRAC 0x10
#define ESP_SHOWSTART 0x20
#define ESP_SHOWPHASE 0x40
#if ESP_DEBUG
#define ESP_ECBS(str) do {if (esp_debug & ESP_SHOWECBS) printf str;} while (0)
#define ESP_MISC(str) do {if (esp_debug & ESP_SHOWMISC) printf str;} while (0)
#define ESP_INTS(str) do {if (esp_debug & ESP_SHOWINTS) printf str;} while (0)
#define ESP_TRACE(str) do {if (esp_debug & ESP_SHOWTRAC) printf str;} while (0)
#define ESP_CMDS(str) do {if (esp_debug & ESP_SHOWCMDS) printf str;} while (0)
#define ESP_START(str) do {if (esp_debug & ESP_SHOWSTART) printf str;}while (0)
#define ESP_PHASE(str) do {if (esp_debug & ESP_SHOWPHASE) printf str;}while (0)
#else
#define ESP_ECBS(str)
#define ESP_MISC(str)
#define ESP_INTS(str)
#define ESP_TRACE(str)
#define ESP_CMDS(str)
#define ESP_START(str)
#define ESP_PHASE(str)
#endif
struct esp_softc {
struct device sc_dev;
struct sbusdev sc_sd; /* sbus device */
struct intrhand sc_ih; /* intr handler */
struct evcnt sc_intrcnt; /* intr count */
struct scsi_link sc_link; /* scsi lint struct */
struct espregs *sc_regs; /* the registers */
struct dma_softc *sc_dma; /* corresponding DMA ctrlr */
/* register defaults */
u_char sc_cfg1; /* config 1 */
u_char sc_cfg2; /* config 2, only ESP100A/200 */
u_char sc_cfg3; /* config 3, only ESP200 */
u_char sc_ccf; /* clock conversion */
u_char sc_timeout;
u_char sc_espintr; /* copies of registers */
u_char sc_espstat;
u_char sc_espstep;
u_char sc_espfflags;
struct bootpath *sc_bp; /* current boot path component */
/* Lists of command blocks */
TAILQ_HEAD(ecb_list, ecb) free_list, ready_list, nexus_list;
struct ecb *sc_nexus; /* current command */
struct ecb sc_ecb[8]; /* one per target */
struct esp_tinfo sc_tinfo[8];
/* data about the current nexus (updated for every cmd switch) */
caddr_t sc_dp; /* current data pointer */
size_t sc_dleft; /* data left to transfer */
/* adapter state */
int sc_phase; /* bus phase (based on sc_espstat) */
u_char sc_state; /* state applicable to the adapter */
u_char sc_flags;
u_char sc_selid;
/* message stuff */
u_char sc_msgpriq; /* messages to send (see SEND_* below) */
u_char sc_msgout; /* message that is on it's way out */
u_char sc_omess[ESP_MSGLEN_MAX];
u_char *sc_omp; /* message pointer (for multibyte messages) */
size_t sc_omlen;
u_char sc_imess[ESP_MSGLEN_MAX + 1];
u_char *sc_imp; /* message pointer (for multibyte messages) */
size_t sc_imlen;
/* hardware/openprom stuff */
int sc_node; /* PROM node ID */
int sc_freq; /* Freq in HZ */
int sc_pri; /* SBUS priority */
int sc_id; /* our scsi id */
int sc_rev; /* esp revision */
int sc_minsync; /* minimum sync period / 4 */
};
/* values for sc_state */
#define ESPS_IDLE 0x01 /* waiting for something to do */
#define ESPS_EXPECTDISC 0x02 /* a disconnect is going to happen */
#define ESPS_SELECTING 0x03 /* SCSI command is arbiting */
#define ESPS_RESELECTED 0x04 /* has been reselected */
#define ESPS_NEXUS 0x05 /* actively using the SCSI bus */
#define ESPS_DOINGDMA 0x06 /* doing a DMA transaction */
#define ESPS_DOINGMSGOUT 0x07 /* message-out in progress */
#define ESPS_DOINGMSGIN 0x08 /* message-in in progress */
#define ESPS_DOINGSTATUS 0x09 /* status-in in progress */
#define ESPS_SELECTSTOP 0x0a /* sent first byte of message.. */
#define ESPS_MULTMSGEND 0x0b /* done sending multibyte msg */
/* values for sc_flags */
#define ESPF_DROP_MSGI 0x01 /* Discard all msgs (parity err detected) */
#define ESPF_MAYDISCON 0x02 /* disconnection allowed */
#define ESPF_DONE 0x04 /* finished transaction */
#define ESPF_SYNCHNEGO 0x08 /* Synch negotiation in progress. */
/* values for sc_msgout */
#define SEND_DEV_RESET 0x01
#define SEND_PARITY_ERROR 0x02
#define SEND_ABORT 0x04
#define SEND_REJECT 0x08
#define SEND_INIT_DET_ERR 0x10
#define SEND_IDENTIFY 0x20
#define SEND_SDTR 0x40
#define ST_MASK 0x3e /* bits 0, 6, and 7 are reserved */
/* physical phase bits */
#define IOI 0x01
#define CDI 0x02
#define MSGI 0x04
/* values for sc_phase (where information transfer happens) */
#define DATA_OUT_PHASE (0)
#define DATA_IN_PHASE (IOI)
#define COMMAND_PHASE (CDI)
#define STATUS_PHASE (CDI|IOI)
#define MESSAGE_OUT_PHASE (MSGI|CDI)
#define MESSAGE_IN_PHASE (MSGI|CDI|IOI)
#define PHASE_MASK (MSGI|CDI|IOI)
#define TARGETNAME(ecb) \
((struct device *)(ecb)->xs->sc_link->adapter_softc)->dv_xname
|
