1 /* $NetBSD: if_hme_sbus.c,v 1.34 2022/09/25 18:03:04 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Paul Kranenburg.
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * SBus front-end device driver for the HME ethernet device.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: if_hme_sbus.c,v 1.34 2022/09/25 18:03:04 thorpej Exp $");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/syslog.h>
42 #include <sys/device.h>
43 #include <sys/socket.h>
44
45 #include <net/if.h>
46 #include <net/if_dl.h>
47 #include <net/if_ether.h>
48 #include <net/if_media.h>
49
50 #include <dev/mii/mii.h>
51 #include <dev/mii/miivar.h>
52
53 #include <sys/bus.h>
54 #include <sys/intr.h>
55 #include <machine/autoconf.h>
56
57 #include <dev/sbus/sbusvar.h>
58 #include <dev/ic/hmevar.h>
59
60 struct hmesbus_softc {
61 struct hme_softc hsc_hme; /* HME device */
62 /* sbus specific stuff here */
63 };
64
65 int hmematch_sbus(device_t, cfdata_t, void *);
66 void hmeattach_sbus(device_t, device_t, void *);
67
68 CFATTACH_DECL_NEW(hme_sbus, sizeof(struct hmesbus_softc),
69 hmematch_sbus, hmeattach_sbus, NULL, NULL);
70
71 int
hmematch_sbus(device_t parent,cfdata_t cf,void * aux)72 hmematch_sbus(device_t parent, cfdata_t cf, void *aux)
73 {
74 struct sbus_attach_args *sa = aux;
75
76 return (strcmp(cf->cf_name, sa->sa_name) == 0 ||
77 strcmp("SUNW,qfe", sa->sa_name) == 0 ||
78 strcmp("SUNW,hme", sa->sa_name) == 0);
79 }
80
81 void
hmeattach_sbus(device_t parent,device_t self,void * aux)82 hmeattach_sbus(device_t parent, device_t self, void *aux)
83 {
84 struct sbus_attach_args *sa = aux;
85 struct hmesbus_softc *hsc = device_private(self);
86 struct hme_softc *sc = &hsc->hsc_hme;
87 struct sbus_softc *sbsc = device_private(parent);
88 uint32_t burst, sbusburst;
89 int node;
90
91 sc->sc_dev = self;
92 node = sa->sa_node;
93
94 /* Pass on the bus tags */
95 sc->sc_bustag = sa->sa_bustag;
96 sc->sc_dmatag = sa->sa_dmatag;
97
98 aprint_normal(": Sun Happy Meal Ethernet (%s)\n",
99 sa->sa_name);
100
101 if (sa->sa_nreg < 5) {
102 aprint_error_dev(self, "only %d register sets\n",
103 sa->sa_nreg);
104 return;
105 }
106
107 /*
108 * Map five register banks:
109 *
110 * bank 0: HME SEB registers
111 * bank 1: HME ETX registers
112 * bank 2: HME ERX registers
113 * bank 3: HME MAC registers
114 * bank 4: HME MIF registers
115 *
116 */
117 if (sbus_bus_map(sa->sa_bustag,
118 sa->sa_reg[0].oa_space,
119 sa->sa_reg[0].oa_base,
120 (bus_size_t)sa->sa_reg[0].oa_size,
121 0, &sc->sc_seb) != 0) {
122 aprint_error_dev(self, "cannot map SEB registers\n");
123 return;
124 }
125 if (sbus_bus_map(sa->sa_bustag,
126 sa->sa_reg[1].oa_space,
127 sa->sa_reg[1].oa_base,
128 (bus_size_t)sa->sa_reg[1].oa_size,
129 0, &sc->sc_etx) != 0) {
130 aprint_error_dev(self, "cannot map ETX registers\n");
131 return;
132 }
133 if (sbus_bus_map(sa->sa_bustag,
134 sa->sa_reg[2].oa_space,
135 sa->sa_reg[2].oa_base,
136 (bus_size_t)sa->sa_reg[2].oa_size,
137 0, &sc->sc_erx) != 0) {
138 aprint_error_dev(self, "cannot map ERX registers\n");
139 return;
140 }
141 if (sbus_bus_map(sa->sa_bustag,
142 sa->sa_reg[3].oa_space,
143 sa->sa_reg[3].oa_base,
144 (bus_size_t)sa->sa_reg[3].oa_size,
145 0, &sc->sc_mac) != 0) {
146 aprint_error_dev(self, "cannot map MAC registers\n");
147 return;
148 }
149 if (sbus_bus_map(sa->sa_bustag,
150 sa->sa_reg[4].oa_space,
151 sa->sa_reg[4].oa_base,
152 (bus_size_t)sa->sa_reg[4].oa_size,
153 0, &sc->sc_mif) != 0) {
154 aprint_error_dev(self, "cannot map MIF registers\n");
155 return;
156 }
157
158 prom_getether(node, sc->sc_enaddr);
159
160 /*
161 * Get transfer burst size from PROM and pass it on
162 * to the back-end driver.
163 */
164 sbusburst = sbsc->sc_burst;
165 if (sbusburst == 0)
166 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
167
168 burst = prom_getpropint(node, "burst-sizes", -1);
169 if (burst == -1)
170 /* take SBus burst sizes */
171 burst = sbusburst;
172
173 /* Clamp at parent's burst sizes */
174 burst &= sbusburst;
175
176 /* Translate into plain numerical format */
177 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
178 (burst & SBUS_BURST_16) ? 16 : 0;
179
180 sc->sc_pci = 0; /* XXXXX should all be done in bus_dma. */
181 hme_config(sc);
182
183 /* Establish interrupt handler */
184 if (sa->sa_nintr != 0)
185 (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET,
186 hme_intr, sc);
187 }
188