1 /* $NetBSD: if_mbe_g2.c,v 1.9 2018/07/18 23:10:27 sevan Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Christian Groessler 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. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * All Rights Reserved, Copyright (C) Fujitsu Limited 1995 33 * 34 * This software may be used, modified, copied, distributed, and sold, in 35 * both source and binary form provided that the above copyright, these 36 * terms and the following disclaimer are retained. The name of the author 37 * and/or the contributor may not be used to endorse or promote products 38 * derived from this software without specific prior written permission. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION. 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 */ 52 53 /* 54 * Portions copyright (C) 1993, David Greenman. This software may be used, 55 * modified, copied, distributed, and sold, in both source and binary form 56 * provided that the above copyright and these terms are retained. Under no 57 * circumstances is the author responsible for the proper functioning of this 58 * software, nor does the author assume any responsibility for damages 59 * incurred with its use. 60 */ 61 62 /* 63 * Driver for Sega LAN Adapter (HIT-0300) 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: if_mbe_g2.c,v 1.9 2018/07/18 23:10:27 sevan Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/device.h> 72 #include <sys/bus.h> 73 74 #include <net/if.h> 75 #include <net/if_ether.h> 76 #include <net/if_media.h> 77 78 #include <machine/intr.h> 79 #include <machine/sysasicvar.h> 80 #include <machine/cpu.h> 81 82 #include <dev/ic/mb86960reg.h> 83 #include <dev/ic/mb86960var.h> 84 85 #include <dreamcast/dev/g2/g2busvar.h> 86 87 88 int mbe_g2_match(device_t, cfdata_t, void *); 89 void mbe_g2_attach(device_t, device_t, void *); 90 static int mbe_g2_detect(bus_space_tag_t, bus_space_handle_t, uint8_t *); 91 92 struct mbe_g2_softc { 93 struct mb86960_softc sc_mb86960; /* real "mb86960" softc */ 94 }; 95 96 CFATTACH_DECL_NEW(mbe_g2bus, sizeof(struct mbe_g2_softc), 97 mbe_g2_match, mbe_g2_attach, NULL, NULL); 98 99 #define LANA_NPORTS (0x20 * 4) 100 101 #ifdef LANA_DEBUG 102 #define DPRINTF printf 103 #else 104 #define DPRINTF while (/* CONSTCOND */0) printf 105 #endif 106 107 static struct dreamcast_bus_space mbe_g2_dbs; 108 109 /* 110 * Determine if the device is present. 111 */ 112 int 113 mbe_g2_match(device_t parent, cfdata_t cf, void *aux) 114 { 115 struct g2bus_attach_args *ga = aux; 116 bus_space_handle_t memh; 117 struct dreamcast_bus_space dbs; 118 bus_space_tag_t memt = &dbs; 119 static int lanafound; 120 int rv; 121 uint8_t myea[ETHER_ADDR_LEN]; 122 123 if (lanafound) 124 return 0; 125 126 if (strcmp("mbe", cf->cf_name)) 127 return 0; 128 129 memcpy(memt, ga->ga_memt, sizeof(struct dreamcast_bus_space)); 130 g2bus_set_bus_mem_sparse(memt); 131 132 /* Map i/o ports. */ 133 if (bus_space_map(memt, 0x00600400, LANA_NPORTS, 0, &memh)) { 134 DPRINTF("%s: couldn't map iospace 0x%x\n", 135 __func__, 0x00600400); 136 return 0; 137 } 138 139 rv = 0; 140 if (mbe_g2_detect(memt, memh, myea) == 0) { 141 DPRINTF("%s: LAN Adapter detection failed\n", __func__); 142 goto out; 143 } 144 145 rv = 1; 146 lanafound = 1; 147 out: 148 bus_space_unmap(memt, memh, LANA_NPORTS); 149 return rv; 150 } 151 152 153 /* 154 * Determine type and ethernet address. 155 */ 156 static int 157 mbe_g2_detect(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *enaddr) 158 { 159 uint8_t eeprom[FE_EEPROM_SIZE]; 160 161 /* Read the chip type */ 162 if ((bus_space_read_1(iot, ioh, FE_DLCR7) & FE_D7_IDENT) != 163 FE_D7_IDENT_86967) { 164 DPRINTF("%s: unknown chip type\n", __func__); 165 return 0; 166 } 167 168 memset(eeprom, 0, FE_EEPROM_SIZE); 169 170 /* Get our station address from EEPROM. */ 171 mb86965_read_eeprom(iot, ioh, eeprom); 172 memcpy(enaddr, eeprom, ETHER_ADDR_LEN); 173 174 DPRINTF("Ethernet address %s\n", ether_sprintf(enaddr)); 175 176 /* Make sure we got a valid station address. */ 177 if ((enaddr[0] & 0x03) != 0x00 || 178 (enaddr[0] == 0x00 && enaddr[1] == 0x00 && enaddr[2] == 0x00)) { 179 DPRINTF("%s: invalid ethernet address\n", __func__); 180 return 0; 181 } 182 183 return 1; 184 } 185 186 void 187 mbe_g2_attach(device_t parent, device_t self, void *aux) 188 { 189 struct mbe_g2_softc *isc = device_private(self); 190 struct mb86960_softc *sc = &isc->sc_mb86960; 191 struct g2bus_attach_args *ga = aux; 192 bus_space_tag_t memt = &mbe_g2_dbs; 193 bus_space_handle_t memh; 194 uint8_t myea[ETHER_ADDR_LEN]; 195 196 sc->sc_dev = self; 197 198 memcpy(memt, ga->ga_memt, sizeof(struct dreamcast_bus_space)); 199 g2bus_set_bus_mem_sparse(memt); 200 201 /* Map i/o ports. */ 202 if (bus_space_map(memt, 0x00600400, LANA_NPORTS, 0, &memh)) { 203 aprint_error(": can't map i/o space\n"); 204 return; 205 } 206 207 sc->sc_bst = memt; 208 sc->sc_bsh = memh; 209 210 /* Determine the card type. */ 211 if (mbe_g2_detect(memt, memh, myea) == 0) { 212 aprint_error(": where did the card go?!\n"); 213 panic("unknown card"); 214 } 215 216 aprint_normal(": Sega LAN-Adapter Ethernet\n"); 217 218 /* This interface is always enabled. */ 219 sc->sc_stat |= FE_STAT_ENABLED; 220 221 /* The LAN-Adapter uses 8 bit bus mode and slow SRAM. */ 222 sc->sc_flags |= FE_FLAGS_SBW_BYTE | FE_FLAGS_SRAM_150ns; 223 224 /* 225 * Do generic MB86960 attach. 226 */ 227 mb86960_attach(sc, myea); 228 229 mb86960_config(sc, NULL, 0, 0); 230 231 sysasic_intr_establish(SYSASIC_EVENT_8BIT, IPL_NET, SYSASIC_IRL11, 232 mb86960_intr, sc); 233 } 234
Indexes created Sat Sep 20 22:09:52 GMT 2025