1 /* $NetBSD: if_sn_obio.c,v 1.29 2021/02/20 09:36:30 rin Exp $ */
2
3 /*
4 * Copyright (C) 1997 Allen Briggs
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Allen Briggs
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: if_sn_obio.c,v 1.29 2021/02/20 09:36:30 rin Exp $");
35
36 #include <sys/param.h>
37 #include <sys/device.h>
38 #include <sys/systm.h>
39 #include <sys/ioctl.h>
40
41 #include <sys/rndsource.h>
42
43 #include <net/if.h>
44 #include <net/if_ether.h>
45
46 #include <machine/bus.h>
47 #include <machine/cpu.h>
48 #include <machine/viareg.h>
49
50 #include <dev/ic/dp83932reg.h>
51 #include <dev/ic/dp83932var.h>
52
53 #include <mac68k/obio/obiovar.h>
54 #include <mac68k/dev/if_snvar.h>
55
56 #define SONIC_REG_BASE 0x50F0A000
57 #define SONIC_PROM_BASE 0x50F08000
58 #define SONIC_SLOTNO 9
59
60 static int sn_obio_match(device_t, cfdata_t, void *);
61 static void sn_obio_attach(device_t, device_t, void *);
62 static int sn_obio_getaddr(struct sonic_softc *, uint8_t *);
63 static int sn_obio_getaddr_kludge(struct sonic_softc *, uint8_t *);
64
65 CFATTACH_DECL_NEW(sn_obio, sizeof(struct sonic_softc),
66 sn_obio_match, sn_obio_attach, NULL, NULL);
67
68 static int
sn_obio_match(device_t parent,cfdata_t cf,void * aux)69 sn_obio_match(device_t parent, cfdata_t cf, void *aux)
70 {
71 struct obio_attach_args *oa = aux;
72 bus_space_handle_t bsh;
73 int found = 0;
74
75 if (!mac68k_machine.sonic)
76 return 0;
77
78 if (bus_space_map(oa->oa_tag,
79 SONIC_REG_BASE, SONIC_NREGS * 4, 0, &bsh))
80 return 0;
81
82 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 4))
83 found = 1;
84
85 bus_space_unmap(oa->oa_tag, bsh, SONIC_NREGS * 4);
86
87 return found;
88 }
89
90 /*
91 * Install interface into kernel networking data structures
92 */
93 static void
sn_obio_attach(device_t parent,device_t self,void * aux)94 sn_obio_attach(device_t parent, device_t self, void *aux)
95 {
96 struct sonic_softc *sc = device_private(self);
97 struct obio_attach_args *oa = aux;
98 uint8_t myaddr[ETHER_ADDR_LEN];
99 int i;
100
101 sc->sc_dev = self;
102 sc->sc_st = oa->oa_tag;
103 sc->sc_dmat = oa->oa_dmat;
104
105 if (bus_space_map(sc->sc_st,
106 SONIC_REG_BASE, SONIC_NREGS * 4, 0, &sc->sc_sh)) {
107 aprint_error(": failed to map space for SONIC regs.\n");
108 return;
109 }
110
111 /* regs are addressed as words, big-endian. */
112 for (i = 0; i < SONIC_NREGS; i++) {
113 sc->sc_regmap[i] = (bus_size_t)((i * 4) + 2);
114 }
115
116 sc->sc_bigendian = 1;
117
118 sc->sc_dcr = DCR_BMS | DCR_RFT1 | DCR_TFT0;
119 sc->sc_dcr2 = 0;
120
121 switch (current_mac_model->machineid) {
122 case MACH_MACC610:
123 case MACH_MACC650:
124 case MACH_MACQ610:
125 case MACH_MACQ650:
126 case MACH_MACQ700:
127 case MACH_MACQ800:
128 case MACH_MACQ900:
129 case MACH_MACQ950:
130 sc->sc_dcr |= DCR_EXBUS;
131 sc->sc_32bit = 1;
132 break;
133
134 case MACH_MACLC575:
135 case MACH_MACP580:
136 case MACH_MACQ630:
137 /* Apple Comm Slot cards; assume they are 32 bit */
138 sc->sc_dcr |= DCR_EXBUS | DCR_USR1 | DCR_USR0;
139 sc->sc_32bit = 1;
140 break;
141
142 case MACH_MACPB500:
143 sc->sc_dcr |= DCR_SBUS | DCR_LBR;
144 sc->sc_32bit = 0; /* 16 bit interface */
145 break;
146
147 default:
148 aprint_error(": unsupported machine type\n");
149 return;
150 }
151
152 if (sn_obio_getaddr(sc, myaddr) &&
153 sn_obio_getaddr_kludge(sc, myaddr)) { /* XXX kludge for PB */
154 aprint_error(": failed to get MAC address.\n");
155 bus_space_unmap(sc->sc_st, sc->sc_sh, SONIC_NREGS * 4);
156 return;
157 }
158
159 aprint_normal(": integrated SONIC Ethernet adapter\n");
160
161 if (mac68k_machine.aux_interrupts) {
162 intr_establish(sonic_intr, (void *)sc, 3);
163 } else {
164 add_nubus_intr(SONIC_SLOTNO, (void (*)(void *))sonic_intr,
165 (void *)sc);
166 }
167
168 sonic_attach(sc, myaddr);
169 }
170
171 static int
sn_obio_getaddr(struct sonic_softc * sc,uint8_t * lladdr)172 sn_obio_getaddr(struct sonic_softc *sc, uint8_t *lladdr)
173 {
174 bus_space_handle_t bsh;
175
176 if (bus_space_map(sc->sc_st, SONIC_PROM_BASE, PAGE_SIZE, 0, &bsh)) {
177 aprint_error(": failed to map space to read SONIC address.\n");
178 aprint_normal("%s:", device_xname(sc->sc_dev));
179 return -1;
180 }
181
182 if (!mac68k_bus_space_probe(sc->sc_st, bsh, 0, 1)) {
183 bus_space_unmap(sc->sc_st, bsh, PAGE_SIZE);
184 return -1;
185 }
186
187 sn_get_enaddr(sc->sc_st, bsh, 0, lladdr);
188
189 bus_space_unmap(sc->sc_st, bsh, PAGE_SIZE);
190
191 return 0;
192 }
193
194 /*
195 * Assume that the SONIC was initialized in MacOS. This should go away
196 * when we can properly get the MAC address on the PBs.
197 */
198 static int
sn_obio_getaddr_kludge(struct sonic_softc * sc,u_int8_t * lladdr)199 sn_obio_getaddr_kludge(struct sonic_softc *sc, u_int8_t *lladdr)
200 {
201 int i, ors = 0;
202
203 /* Shut down NIC */
204 CSR_WRITE(sc, SONIC_CR, CR_RST);
205
206 /* For some reason, Apple fills top first. */
207 CSR_WRITE(sc, SONIC_CEP, 15);
208
209 i = CSR_READ(sc, SONIC_CAP2);
210
211 ors |= i;
212 lladdr[5] = i >> 8;
213 lladdr[4] = i;
214
215 i = CSR_READ(sc, SONIC_CAP1);
216
217 ors |= i;
218 lladdr[3] = i >> 8;
219 lladdr[2] = i;
220
221 i = CSR_READ(sc, SONIC_CAP0);
222
223 ors |= i;
224 lladdr[1] = i >> 8;
225 lladdr[0] = i;
226
227 CSR_WRITE(sc, SONIC_CR, 0);
228
229 if (ors == 0)
230 return -1;
231
232 return 0;
233 }
234