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
|
/* $OpenBSD: if_ae.c,v 1.34 2007/01/22 13:17:45 martin Exp $ */
/* $NetBSD: if_ae.c,v 1.78 2006/09/09 06:25:08 tsutsui Exp $ */
/*
* Device driver for National Semiconductor DS8390/WD83C690 based ethernet
* adapters.
*
* Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
*
* Copyright (C) 1993, David Greenman. This software may be used, modified,
* copied, distributed, and sold, in both source and binary form provided that
* the above copyright and these terms are retained. Under no circumstances is
* the author responsible for the proper functioning of this software, nor does
* the author assume any responsibility for damages incurred with its use.
*/
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#include <net/if_media.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#include <machine/bus.h>
#include <dev/ic/dp8390reg.h>
#include <dev/ic/dp8390var.h>
#include <mac68k/dev/if_aevar.h>
struct cfdriver ae_cd = {
NULL, "ae", DV_IFNET
};
#define ETHER_PAD_LEN (ETHER_MIN_LEN - ETHER_CRC_LEN)
int
ae_size_card_memory(bus_space_tag_t bst, bus_space_handle_t bsh, int ofs)
{
int i1, i2, i3, i4, i8;
/*
* banks; also assume it will generally mirror in upper banks
* if not installed.
*/
i1 = (8192 * 0);
i2 = (8192 * 1);
i3 = (8192 * 2);
i4 = (8192 * 3);
i8 = (8192 * 4);
bus_space_write_2(bst, bsh, ofs + i8, 0x8888);
bus_space_write_2(bst, bsh, ofs + i4, 0x4444);
bus_space_write_2(bst, bsh, ofs + i3, 0x3333);
bus_space_write_2(bst, bsh, ofs + i2, 0x2222);
bus_space_write_2(bst, bsh, ofs + i1, 0x1111);
/*
* 1) If the memory range is decoded completely, it does not
* matter what we write first: High tags written into
* the void are lost.
* 2) If the memory range is not decoded completely (banks are
* mirrored), high tags are overwritten by lower ones.
* 3) Lazy implementation of pathological cases - none found yet.
*/
if (bus_space_read_2(bst, bsh, ofs + i1) == 0x1111 &&
bus_space_read_2(bst, bsh, ofs + i2) == 0x2222 &&
bus_space_read_2(bst, bsh, ofs + i3) == 0x3333 &&
bus_space_read_2(bst, bsh, ofs + i4) == 0x4444 &&
bus_space_read_2(bst, bsh, ofs + i8) == 0x8888)
return 8192 * 8;
if (bus_space_read_2(bst, bsh, ofs + i1) == 0x1111 &&
bus_space_read_2(bst, bsh, ofs + i2) == 0x2222 &&
bus_space_read_2(bst, bsh, ofs + i3) == 0x3333 &&
bus_space_read_2(bst, bsh, ofs + i4) == 0x4444)
return 8192 * 4;
if ((bus_space_read_2(bst, bsh, ofs + i1) == 0x1111 &&
bus_space_read_2(bst, bsh, ofs + i2) == 0x2222) ||
(bus_space_read_2(bst, bsh, ofs + i1) == 0x3333 &&
bus_space_read_2(bst, bsh, ofs + i2) == 0x4444))
return 8192 * 2;
if (bus_space_read_2(bst, bsh, ofs + i1) == 0x1111 ||
bus_space_read_2(bst, bsh, ofs + i1) == 0x4444)
return 8192;
return 0;
}
/*
* Zero memory and verify that it is clear. The only difference between
* this and the default test_mem function is that the DP8390-based NuBus
* cards * apparently require word-wide writes and byte-wide reads, an
* `interesting' combination.
*/
int
ae_test_mem(struct dp8390_softc *sc)
{
bus_space_tag_t buft = sc->sc_buft;
bus_space_handle_t bufh = sc->sc_bufh;
int i;
bus_space_set_region_2(buft, bufh, sc->mem_start, 0,
sc->mem_size / 2);
for (i = 0; i < sc->mem_size; ++i) {
if (bus_space_read_1(sc->sc_buft, sc->sc_bufh, i)) {
printf(": failed to clear NIC buffer at offset %x - "
"check configuration\n", (sc->mem_start + i));
return 1;
}
}
return 0;
}
/*
* Copy packet from mbuf to the board memory Currently uses an extra
* buffer/extra memory copy, unless the whole packet fits in one mbuf.
*
* As in the test_mem function, we use word-wide writes.
*/
int
ae_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf)
{
u_char *data, savebyte[2];
int len, wantbyte;
u_short totlen = 0;
wantbyte = 0;
for (; m ; m = m->m_next) {
data = mtod(m, u_char *);
len = m->m_len;
totlen += len;
if (len > 0) {
/* Finish the last word. */
if (wantbyte) {
savebyte[1] = *data;
bus_space_write_region_2(sc->sc_buft,
sc->sc_bufh, buf, (u_int16_t *)savebyte, 1);
buf += 2;
data++;
len--;
wantbyte = 0;
}
/* Output contiguous words. */
if (len > 1) {
bus_space_write_region_2(
sc->sc_buft, sc->sc_bufh,
buf, (u_int16_t *)data, len >> 1);
buf += len & ~1;
data += len & ~1;
len &= 1;
}
/* Save last byte, if necessary. */
if (len == 1) {
savebyte[0] = *data;
wantbyte = 1;
}
}
}
len = ETHER_PAD_LEN - totlen;
if (wantbyte) {
savebyte[1] = 0;
bus_space_write_region_2(sc->sc_buft, sc->sc_bufh,
buf, (u_int16_t *)savebyte, 1);
buf += 2;
if (len > 0)
totlen++;
len--;
}
/* if sent data is shorter than EHTER_PAD_LEN, put 0 to padding */
if (len > 0) {
bus_space_set_region_2(sc->sc_buft, sc->sc_bufh, buf, 0,
len >> 1);
totlen = ETHER_PAD_LEN;
}
return (totlen);
}
|
