if_le_lebuffer.c revision 1.3 1 /* $NetBSD: if_le_lebuffer.c,v 1.3 1998/08/29 20:32:11 pk Exp $ */
2
3 /*-
4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
9 * Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40
41 #include "opt_inet.h"
42 #include "bpfilter.h"
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/mbuf.h>
47 #include <sys/syslog.h>
48 #include <sys/socket.h>
49 #include <sys/device.h>
50 #include <sys/malloc.h>
51
52 #include <net/if.h>
53 #include <net/if_ether.h>
54 #include <net/if_media.h>
55
56 #ifdef INET
57 #include <netinet/in.h>
58 #include <netinet/if_inarp.h>
59 #endif
60
61 #include <machine/autoconf.h>
62 #include <machine/cpu.h>
63
64 #include <dev/sbus/sbusvar.h>
65 #include <dev/sbus/lebuffervar.h>
66
67 #include <dev/ic/lancereg.h>
68 #include <dev/ic/lancevar.h>
69 #include <dev/ic/am7990reg.h>
70 #include <dev/ic/am7990var.h>
71
72 /*
73 * LANCE registers.
74 */
75 #define LEREG1_RDP 0 /* Register Data port */
76 #define LEREG1_RAP 2 /* Register Address port */
77
78 struct le_softc {
79 struct am7990_softc sc_am7990; /* glue to MI code */
80 struct sbusdev sc_sd; /* sbus device */
81 bus_space_tag_t sc_bustag;
82 bus_dma_tag_t sc_dmatag;
83 bus_space_handle_t sc_reg; /* LANCE registers */
84 };
85
86
87 int lematch_lebuffer __P((struct device *, struct cfdata *, void *));
88 void leattach_lebuffer __P((struct device *, struct device *, void *));
89
90 /*
91 * Media types supported.
92 */
93 static int lemedia[] = {
94 IFM_ETHER|IFM_10_T,
95 };
96 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0]))
97
98 struct cfattach le_lebuffer_ca = {
99 sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer
100 };
101
102 extern struct cfdriver le_cd;
103
104 #if defined(_KERNEL) && !defined(_LKM)
105 #include "opt_ddb.h"
106 #endif
107
108 #ifdef DDB
109 #define integrate
110 #define hide
111 #else
112 #define integrate static __inline
113 #define hide static
114 #endif
115
116 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
117 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
118
119 static void
120 lewrcsr(sc, port, val)
121 struct lance_softc *sc;
122 u_int16_t port, val;
123 {
124 struct le_softc *lesc = (struct le_softc *)sc;
125
126 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
127 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
128
129 #if defined(SUN4M)
130 /*
131 * We need to flush the Sbus->Mbus write buffers. This can most
132 * easily be accomplished by reading back the register that we
133 * just wrote (thanks to Chris Torek for this solution).
134 */
135 if (CPU_ISSUN4M) {
136 volatile u_int16_t discard;
137 discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg,
138 LEREG1_RDP);
139 }
140 #endif
141 }
142
143 static u_int16_t
144 lerdcsr(sc, port)
145 struct lance_softc *sc;
146 u_int16_t port;
147 {
148 struct le_softc *lesc = (struct le_softc *)sc;
149
150 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
151 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
152 }
153
154 int
155 lematch_lebuffer(parent, cf, aux)
156 struct device *parent;
157 struct cfdata *cf;
158 void *aux;
159 {
160 struct sbus_attach_args *sa = aux;
161
162 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
163 }
164
165
166 #define SAME_LANCE(bp, sa) \
167 (bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset)
168
169
170 void
171 leattach_lebuffer(parent, self, aux)
172 struct device *parent, *self;
173 void *aux;
174 {
175 struct sbus_attach_args *sa = aux;
176 struct le_softc *lesc = (struct le_softc *)self;
177 struct lance_softc *sc = &lesc->sc_am7990.lsc;
178 struct lebuf_softc *lebuf = (struct lebuf_softc *)parent;
179 /* XXX the following declarations should be elsewhere */
180 extern void myetheraddr __P((u_char *));
181
182 lesc->sc_bustag = sa->sa_bustag;
183 lesc->sc_dmatag = sa->sa_dmatag;
184
185 if (bus_space_map2(sa->sa_bustag,
186 sa->sa_slot,
187 sa->sa_offset,
188 sa->sa_size,
189 BUS_SPACE_MAP_LINEAR,
190 0, &lesc->sc_reg)) {
191 printf("%s @ lebuffer: cannot map registers\n", self->dv_xname);
192 return;
193 }
194
195 sc->sc_mem = lebuf->sc_buffer;
196 sc->sc_memsize = lebuf->sc_bufsiz;
197 sc->sc_addr = 0; /* Lance view is offset by buffer location */
198 lebuf->attached = 1;
199
200 /* That old black magic... */
201 sc->sc_conf3 = getpropint(sa->sa_node, "busmaster-regval",
202 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
203
204 /* Assume SBus is grandparent */
205 lesc->sc_sd.sd_reset = (void *)lance_reset;
206 sbus_establish(&lesc->sc_sd, parent);
207
208 if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 &&
209 SAME_LANCE(sa->sa_bp, sa))
210 sa->sa_bp->dev = &sc->sc_dev;
211
212 sc->sc_supmedia = lemedia;
213 sc->sc_nsupmedia = NLEMEDIA;
214 sc->sc_defaultmedia = lemedia[0];
215
216 myetheraddr(sc->sc_enaddr);
217
218 sc->sc_copytodesc = lance_copytobuf_contig;
219 sc->sc_copyfromdesc = lance_copyfrombuf_contig;
220 sc->sc_copytobuf = lance_copytobuf_contig;
221 sc->sc_copyfrombuf = lance_copyfrombuf_contig;
222 sc->sc_zerobuf = lance_zerobuf_contig;
223
224 sc->sc_rdcsr = lerdcsr;
225 sc->sc_wrcsr = lewrcsr;
226
227 am7990_config(&lesc->sc_am7990);
228
229 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 0,
230 am7990_intr, sc);
231 }
232