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
|
/* $NecBSD: bshw_pdma.c,v 1.4 1997/10/31 17:43:39 honda Exp $ */
/* $NetBSD$ */
/*
* [NetBSD for NEC PC98 series]
* Copyright (c) 1994, 1995, 1996 NetBSD/pc98 porting staff.
* 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.
*/
/*
* Copyright (c) 1994, 1995, 1996 Naofumi HONDA. All rights reserved.
*/
#define LC_SMIT_TIMEOUT 2 /* 2 sec: timeout for a fifo status ready */
static BS_INLINE void bshw_lc_smit_start __P((struct bs_softc *, int, u_int));
static int bshw_lc_smit_fstat __P((struct bs_softc *, int, int));
static BS_INLINE void bshw_lc_smit_stop __P((struct bs_softc *));
/*********************************************************
* SM FIFO (GENERIC)
*********************************************************/
void
bshw_smitabort(bsc)
struct bs_softc *bsc;
{
if (bsc->sc_hw->hw_flags & BSHW_SMFIFO)
bshw_lc_smit_stop(bsc);
bshw_set_count(bsc, 0);
bsc->sc_flags &= ~BSSMITSTART;
}
void
bs_smit_xfer_end(ti)
struct targ_info *ti;
{
struct bs_softc *bsc = ti->ti_bsc;
struct sc_p *sp = &bsc->sc_p;
u_int count;
u_char *s;
bshw_lc_smit_stop(bsc);
bsc->sc_flags &= ~BSSMITSTART;
if (ti->ti_phase == DATAPHASE)
{
count = bshw_get_count(bsc);
if (count < (u_int) sp->datalen)
{
sp->data += (sp->datalen - count);
sp->datalen = count;
/* XXX:
* strict double checks!
* target => wd33c93c transfer counts
* wd33c93c => memory transfer counts
*/
if ((bsc->sc_dmadir & BSHW_READ) &&
count != bsc->sm_tdatalen)
{
s = "read count miss";
goto bad;
}
return;
}
else if (count == (u_int) sp->datalen)
{
return;
}
s = "strange count";
}
else
s = "extra smit interrupt";
bad:
bs_printf(ti, "smit_xfer_end", s);
ti->ti_error |= BSDMAABNORMAL;
}
/*********************************************************
* LOGITEC's SMIT TRANSFER
*********************************************************/
#define BSHW_LC_FSET 0x36
#define BSHW_LC_FCTRL 0x44
#define FCTRL_EN 0x01
#define FCTRL_WRITE 0x02
#define SF_ABORT 0x08
#define SF_RDY 0x10
#define LC_FSZ DEV_BSIZE
#define LC_SFSZ 0x0c
#define LC_REST (LC_FSZ - LC_SFSZ)
static BS_INLINE void
bshw_lc_smit_stop(bsc)
struct bs_softc *bsc;
{
write_wd33c93(bsc, BSHW_LC_FCTRL, 0);
BUS_IOW(cmd_port, CMDP_DMER);
}
static BS_INLINE void
bshw_lc_smit_start(bsc, count, direction)
struct bs_softc *bsc;
int count;
u_int direction;
{
u_int8_t pval, val = read_wd33c93(bsc, BSHW_LC_FSET);
bsc->sc_flags |= BSSMITSTART;
bshw_set_count(bsc, count);
pval = FCTRL_EN;
if ((direction & BSHW_READ) == 0)
pval |= (val & 0xe0) | FCTRL_WRITE;
write_wd33c93(bsc, BSHW_LC_FCTRL, pval);
bshw_start_xfer(bsc);
}
static int
bshw_lc_smit_fstat(bsc, wc, read)
struct bs_softc *bsc;
int wc, read;
{
u_int8_t stat;
#define ALWAYS_ABORT
#ifdef ALWAYS_ABORT
if (read == BSHW_READ)
{
while (wc -- > 0)
{
BUS_IO_WEIGHT;
stat = BUS_IOR(cmd_port);
if (stat & SF_RDY)
return 0;
if (stat & SF_ABORT)
return EIO;
}
}
else
{
#endif /* ALWAYS_ABORT */
while (wc -- > 0)
{
BUS_IO_WEIGHT;
stat = BUS_IOR(cmd_port);
if (stat & SF_ABORT)
return EIO;
if (stat & SF_RDY)
return 0;
}
#ifdef ALWAYS_ABORT
}
#endif /* ALWAYS_ABORT */
bs_poll_timeout(bsc, "bshw_lc_smit");
return EIO;
}
void
bs_lc_smit_xfer(ti, direction)
struct targ_info *ti;
u_int direction;
{
struct bs_softc *bsc = ti->ti_bsc;
struct sc_p *sp = &bsc->sc_p;
int datalen, count, wc = LC_SMIT_TIMEOUT * 1024 * 1024;
u_int8_t *data;
sp->bufp = NULL;
sp->seglen = 0;
data = sp->data;
datalen = sp->datalen;
bsc->sc_dmadir = direction;
bshw_set_dma_trans(bsc, ti->ti_cfgflags);
bshw_lc_smit_start(bsc, sp->datalen, direction);
if (direction & BSHW_READ)
{
do
{
if (bshw_lc_smit_fstat(bsc, wc, BSHW_READ))
break;
count = (datalen > LC_FSZ ? LC_FSZ : datalen);
#ifdef __FreeBSD__
memcopy((u_int8_t *)ti->sm_offset, data, count);
#else /* NetBSD */
bus_space_read_region_4(bsc->sc_memt, bsc->sc_memh,
ti->sm_offset, (u_int32_t *) data, count >> 2);
#endif /* NetBSD */
data += count;
datalen -= count;
}
while (datalen > 0);
bsc->sm_tdatalen = datalen;
}
else
{
do
{
if (bshw_lc_smit_fstat(bsc, wc, BSHW_WRITE))
break;
count = (datalen > LC_SFSZ ? LC_SFSZ : datalen);
#ifdef __FreeBSD__
memcopy(data, (u_int8_t *)ti->sm_offset, count);
#else /* NetBSD */
bus_space_write_region_4(bsc->sc_memt, bsc->sc_memh,
ti->sm_offset, (u_int32_t *) data, count >> 2);
#endif /* NetBSD */
data += count;
datalen -= count;
if (bshw_lc_smit_fstat(bsc, wc, BSHW_WRITE))
break;
count = (datalen > LC_REST ? LC_REST : datalen);
#ifdef __FreeBSD__
memcopy(data, (u_int8_t *)(ti->sm_offset + LC_SFSZ), count);
#else /* NetBSD */
bus_space_write_region_4(bsc->sc_memt, bsc->sc_memh,
ti->sm_offset + LC_SFSZ,
(u_int32_t *) data, count >> 2);
#endif /* NetBSD */
data += count;
datalen -= count;
}
while (datalen > 0);
}
}
|
