1 /* $NetBSD: if_le_dec.c,v 1.13 2003/08/07 16:30:55 agc Exp $ */
2
3 /*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell and Rick Macklem.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)if_le.c 8.2 (Berkeley) 11/16/93
35 */
36
37 /*-
38 * Copyright (c) 1997 Jonathan Stone. All rights reserved.
39 * Copyright (c) 1995 Charles M. Hannum. All rights reserved.
40 *
41 * This code is derived from software contributed to Berkeley by
42 * Ralph Campbell and Rick Macklem.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by the University of
55 * California, Berkeley and its contributors.
56 * 4. Neither the name of the University nor the names of its contributors
57 * may be used to endorse or promote products derived from this software
58 * without specific prior written permission.
59 *
60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70 * SUCH DAMAGE.
71 *
72 * @(#)if_le.c 8.2 (Berkeley) 11/16/93
73 */
74
75 #include <sys/cdefs.h>
76 __KERNEL_RCSID(0, "$NetBSD: if_le_dec.c,v 1.13 2003/08/07 16:30:55 agc Exp $");
77
78 #include "opt_inet.h"
79 #include "bpfilter.h"
80
81 #include <sys/param.h>
82 #include <sys/systm.h>
83 #include <sys/mbuf.h>
84 #include <sys/syslog.h>
85 #include <sys/socket.h>
86 #include <sys/device.h>
87
88 #include <net/if.h>
89 #include <net/if_ether.h>
90 #include <net/if_media.h>
91
92 #ifdef INET
93 #include <netinet/in.h>
94 #include <netinet/if_inarp.h>
95 #endif
96
97 #include <dev/ic/lancereg.h>
98 #include <dev/ic/lancevar.h>
99 #include <dev/ic/am7990reg.h>
100 #include <dev/ic/am7990var.h>
101
102 #include <dev/tc/if_levar.h>
103 #include <dev/tc/tcvar.h>
104
105 #include <machine/bus.h>
106
107 /* access LANCE registers */
108 void le_dec_writereg __P((volatile u_short *regptr, u_short val));
109 #define LERDWR(cntl, src, dst) { (dst) = (src); tc_mb(); }
110 #define LEWREG(src, dst) le_dec_writereg(&(dst), (src))
111
112 #if defined(_KERNEL_OPT)
113 #include "opt_ddb.h"
114 #endif
115
116 #ifdef DDB
117 #define integrate
118 #define hide
119 #else
120 #define integrate static __inline
121 #define hide static
122 #endif
123
124 hide void le_dec_wrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
125 hide u_int16_t le_dec_rdcsr __P((struct lance_softc *, u_int16_t));
126
127 void
128 dec_le_common_attach(sc, eap)
129 struct am7990_softc *sc;
130 u_char *eap;
131 {
132 int i;
133
134 sc->lsc.sc_rdcsr = le_dec_rdcsr;
135 sc->lsc.sc_wrcsr = le_dec_wrcsr;
136 sc->lsc.sc_hwinit = NULL;
137
138 sc->lsc.sc_conf3 = 0;
139 sc->lsc.sc_addr = 0;
140 sc->lsc.sc_memsize = 65536;
141
142 /*
143 * Get the ethernet address out of rom
144 */
145 for (i = 0; i < sizeof(sc->lsc.sc_enaddr); i++) {
146 sc->lsc.sc_enaddr[i] = *eap;
147 eap += 4;
148 }
149
150 am7990_config(sc);
151 }
152
153 hide void
154 le_dec_wrcsr(sc, port, val)
155 struct lance_softc *sc;
156 u_int16_t port, val;
157 {
158 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
159
160 LEWREG(port, ler1->ler1_rap);
161 LERDWR(port, val, ler1->ler1_rdp);
162 }
163
164 hide u_int16_t
165 le_dec_rdcsr(sc, port)
166 struct lance_softc *sc;
167 u_int16_t port;
168 {
169 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
170 u_int16_t val;
171
172 LEWREG(port, ler1->ler1_rap);
173 LERDWR(0, ler1->ler1_rdp, val);
174 return (val);
175 }
176
177 /*
178 * Write a lance register port, reading it back to ensure success. This seems
179 * to be necessary during initialization, since the chip appears to be a bit
180 * pokey sometimes.
181 */
182 void
183 le_dec_writereg(regptr, val)
184 register volatile u_short *regptr;
185 register u_short val;
186 {
187 register int i = 0;
188
189 while (*regptr != val) {
190 *regptr = val;
191 tc_mb();
192 if (++i > 10000) {
193 printf("le: Reg did not settle (to x%x): x%x\n", val,
194 *regptr);
195 return;
196 }
197 DELAY(100);
198 }
199 }
200
201 /*
202 * Routines for accessing the transmit and receive buffers are provided
203 * by am7990.c, because of the LE_NEED_BUF_* macros defined above.
204 * Unfortunately, CPU addressing of these buffers is done in one of
205 * 3 ways:
206 * - contiguous (for the 3max and turbochannel option card)
207 * - gap2, which means shorts (2 bytes) interspersed with short (2 byte)
208 * spaces (for the pmax, vax 3400, and ioasic LANCE descriptors)
209 * - gap16, which means 16bytes interspersed with 16byte spaces
210 * for buffers which must begin on a 32byte boundary (for 3min, maxine,
211 * and alpha)
212 * The buffer offset is the logical byte offset, assuming contiguous storage.
213 */
Cache object: 0b02bec99b708acb5f8a94e6c78de5fc
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