1 /* $OpenBSD: if_gem_sbus.c,v 1.11 2022/03/13 13:34:54 mpi Exp $ */
2 /* $NetBSD: if_gem_sbus.c,v 1.1 2006/11/24 13:23:32 martin Exp $ */
3
4 /*-
5 * Copyright (c) 2006 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Martin Husemann.
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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * SBus front-end for the GEM network driver
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/syslog.h>
40 #include <sys/device.h>
41 #include <sys/malloc.h>
42 #include <sys/socket.h>
43
44 #include <net/if.h>
45 #include <net/if_media.h>
46
47 #include <netinet/in.h>
48 #include <netinet/if_ether.h>
49
50 #include <dev/mii/mii.h>
51 #include <dev/mii/miivar.h>
52
53 #include <machine/bus.h>
54 #include <machine/intr.h>
55 #include <machine/autoconf.h>
56
57 #include <dev/sbus/sbusvar.h>
58
59 #include <dev/ic/gemreg.h>
60 #include <dev/ic/gemvar.h>
61
62 #include <dev/ofw/openfirm.h>
63
64 struct gem_sbus_softc {
65 struct gem_softc gsc_gem; /* GEM device */
66 };
67
68 int gemmatch_sbus(struct device *, void *, void *);
69 void gemattach_sbus(struct device *, struct device *, void *);
70
71 const struct cfattach gem_sbus_ca = {
72 sizeof(struct gem_sbus_softc), gemmatch_sbus, gemattach_sbus
73 };
74
75 int
gemmatch_sbus(struct device * parent,void * vcf,void * aux)76 gemmatch_sbus(struct device *parent, void *vcf, void *aux)
77 {
78 struct sbus_attach_args *sa = aux;
79
80 return (strcmp("network", sa->sa_name) == 0);
81 }
82
83 void
gemattach_sbus(struct device * parent,struct device * self,void * aux)84 gemattach_sbus(struct device *parent, struct device *self, void *aux)
85 {
86 struct sbus_attach_args *sa = aux;
87 struct gem_sbus_softc *gsc = (void *)self;
88 struct gem_softc *sc = &gsc->gsc_gem;
89 /* XXX the following declaration should be elsewhere */
90 extern void myetheraddr(u_char *);
91
92 /* Pass on the bus tags */
93 sc->sc_bustag = sa->sa_bustag;
94 sc->sc_dmatag = sa->sa_dmatag;
95
96 if (sa->sa_nintr < 1) {
97 printf(": no interrupt\n");
98 return;
99 }
100
101 if (sa->sa_nreg < 2) {
102 printf(": only %d register sets\n", sa->sa_nreg);
103 return;
104 }
105
106 sc->sc_variant = GEM_SUN_GEM;
107
108 /*
109 * Map two register banks:
110 *
111 * bank 0: status, config, reset
112 * bank 1: various gem parts
113 *
114 */
115 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
116 (bus_addr_t)sa->sa_reg[0].sbr_offset,
117 (bus_size_t)sa->sa_reg[0].sbr_size, 0, 0,
118 &sc->sc_h2) != 0) {
119 printf(": can't map registers\n");
120 return;
121 }
122 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
123 (bus_addr_t)sa->sa_reg[1].sbr_offset,
124 (bus_size_t)sa->sa_reg[1].sbr_size, 0, 0,
125 &sc->sc_h1) != 0) {
126 printf(": can't map registers\n");
127 return;
128 }
129
130 if (OF_getprop(sa->sa_node, "local-mac-address",
131 sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN) <= 0)
132 myetheraddr(sc->sc_arpcom.ac_enaddr);
133
134 /*
135 * SBUS config
136 */
137 (void) bus_space_read_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_RESET);
138 delay(100);
139 bus_space_write_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_CONFIG,
140 GEM_SBUS_CFG_BSIZE128|GEM_SBUS_CFG_PARITY|GEM_SBUS_CFG_BMODE64);
141
142 /* Establish interrupt handler */
143 sc->sc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET, 0,
144 gem_intr, sc, self->dv_xname);
145
146 gem_config(sc);
147 }
148