/* $NetBSD: if_mbe_g2.c,v 1.9 2018/07/18 23:10:27 sevan Exp $ */ /* * Copyright (c) 2002 Christian Groessler * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * All Rights Reserved, Copyright (C) Fujitsu Limited 1995 * * This software may be used, modified, copied, distributed, and sold, in * both source and binary form provided that the above copyright, these * terms and the following disclaimer are retained. The name of the author * and/or the contributor may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Portions copyright (C) 1993, David Greenman. This software may be used, * modified, copied, distributed, and sold, in both source and binary form * provided that the above copyright and these terms are retained. Under no * circumstances is the author responsible for the proper functioning of this * software, nor does the author assume any responsibility for damages * incurred with its use. */ /* * Driver for Sega LAN Adapter (HIT-0300) */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: if_mbe_g2.c,v 1.9 2018/07/18 23:10:27 sevan Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/bus.h> #include <net/if.h> #include <net/if_ether.h> #include <net/if_media.h> #include <machine/intr.h> #include <machine/sysasicvar.h> #include <machine/cpu.h> #include <dev/ic/mb86960reg.h> #include <dev/ic/mb86960var.h> #include <dreamcast/dev/g2/g2busvar.h> int mbe_g2_match(device_t, cfdata_t, void *); void mbe_g2_attach(device_t, device_t, void *); static int mbe_g2_detect(bus_space_tag_t, bus_space_handle_t, uint8_t *); struct mbe_g2_softc { struct mb86960_softc sc_mb86960; /* real "mb86960" softc */ }; CFATTACH_DECL_NEW(mbe_g2bus, sizeof(struct mbe_g2_softc), mbe_g2_match, mbe_g2_attach, NULL, NULL); #define LANA_NPORTS (0x20 * 4) #ifdef LANA_DEBUG #define DPRINTF printf #else #define DPRINTF while (/* CONSTCOND */0) printf #endif static struct dreamcast_bus_space mbe_g2_dbs; /* * Determine if the device is present. */ int mbe_g2_match(device_t parent, cfdata_t cf, void *aux) { struct g2bus_attach_args *ga = aux; bus_space_handle_t memh; struct dreamcast_bus_space dbs; bus_space_tag_t memt = &dbs; static int lanafound; int rv; uint8_t myea[ETHER_ADDR_LEN]; if (lanafound) return 0; if (strcmp("mbe", cf->cf_name)) return 0; memcpy(memt, ga->ga_memt, sizeof(struct dreamcast_bus_space)); g2bus_set_bus_mem_sparse(memt); /* Map i/o ports. */ if (bus_space_map(memt, 0x00600400, LANA_NPORTS, 0, &memh)) { DPRINTF("%s: couldn't map iospace 0x%x\n", __func__, 0x00600400); return 0; } rv = 0; if (mbe_g2_detect(memt, memh, myea) == 0) { DPRINTF("%s: LAN Adapter detection failed\n", __func__); goto out; } rv = 1; lanafound = 1; out: bus_space_unmap(memt, memh, LANA_NPORTS); return rv; } /* * Determine type and ethernet address. */ static int mbe_g2_detect(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *enaddr) { uint8_t eeprom[FE_EEPROM_SIZE]; /* Read the chip type */ if ((bus_space_read_1(iot, ioh, FE_DLCR7) & FE_D7_IDENT) != FE_D7_IDENT_86967) { DPRINTF("%s: unknown chip type\n", __func__); return 0; } memset(eeprom, 0, FE_EEPROM_SIZE); /* Get our station address from EEPROM. */ mb86965_read_eeprom(iot, ioh, eeprom); memcpy(enaddr, eeprom, ETHER_ADDR_LEN); DPRINTF("Ethernet address %s\n", ether_sprintf(enaddr)); /* Make sure we got a valid station address. */ if ((enaddr[0] & 0x03) != 0x00 || (enaddr[0] == 0x00 && enaddr[1] == 0x00 && enaddr[2] == 0x00)) { DPRINTF("%s: invalid ethernet address\n", __func__); return 0; } return 1; } void mbe_g2_attach(device_t parent, device_t self, void *aux) { struct mbe_g2_softc *isc = device_private(self); struct mb86960_softc *sc = &isc->sc_mb86960; struct g2bus_attach_args *ga = aux; bus_space_tag_t memt = &mbe_g2_dbs; bus_space_handle_t memh; uint8_t myea[ETHER_ADDR_LEN]; sc->sc_dev = self; memcpy(memt, ga->ga_memt, sizeof(struct dreamcast_bus_space)); g2bus_set_bus_mem_sparse(memt); /* Map i/o ports. */ if (bus_space_map(memt, 0x00600400, LANA_NPORTS, 0, &memh)) { aprint_error(": can't map i/o space\n"); return; } sc->sc_bst = memt; sc->sc_bsh = memh; /* Determine the card type. */ if (mbe_g2_detect(memt, memh, myea) == 0) { aprint_error(": where did the card go?!\n"); panic("unknown card"); } aprint_normal(": Sega LAN-Adapter Ethernet\n"); /* This interface is always enabled. */ sc->sc_stat |= FE_STAT_ENABLED; /* The LAN-Adapter uses 8 bit bus mode and slow SRAM. */ sc->sc_flags |= FE_FLAGS_SBW_BYTE | FE_FLAGS_SRAM_150ns; /* * Do generic MB86960 attach. */ mb86960_attach(sc, myea); mb86960_config(sc, NULL, 0, 0); sysasic_intr_establish(SYSASIC_EVENT_8BIT, IPL_NET, SYSASIC_IRL11, mb86960_intr, sc); }
