153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/* $NetBSD: if_gem_sbus.c,v 1.14 2022/09/25 18:03:04 thorpej Exp $ */
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/*-
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* Copyright (c) 2006 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Martin Husemann.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* SBus front-end for the GEM network driver
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_gem_sbus.c,v 1.14 2022/09/25 18:03:04 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <machine/autoconf.h>
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#include <dev/sbus/sbusvar.h>
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#include <dev/ic/gemreg.h>
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#include <dev/ic/gemvar.h>
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struct gem_sbus_softc {
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struct gem_softc gsc_gem; /* GEM device */
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void *gsc_ih;
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bus_space_handle_t gsc_sbus_regs_h;
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};
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int gemmatch_sbus(device_t, cfdata_t, void *);
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void gemattach_sbus(device_t, device_t, void *);
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CFATTACH_DECL3_NEW(gem_sbus, sizeof(struct gem_sbus_softc),
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gemmatch_sbus, gemattach_sbus, NULL, NULL, NULL, NULL, 0);
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int
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gemmatch_sbus(device_t parent, cfdata_t cf, void *aux)
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{
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struct sbus_attach_args *sa = aux;
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return (strcmp("network", sa->sa_name) == 0);
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}
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void
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gemattach_sbus(device_t parent, device_t self, void *aux)
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{
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struct sbus_attach_args *sa = aux;
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struct gem_sbus_softc *gsc = device_private(self);
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struct gem_softc *sc = &gsc->gsc_gem;
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uint8_t enaddr[ETHER_ADDR_LEN];
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sc->sc_dev = self;
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/* Pass on the bus tags */
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sc->sc_bustag = sa->sa_bustag;
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sc->sc_dmatag = sa->sa_dmatag;
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if (sa->sa_nreg < 2) {
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printf("%s: only %d register sets\n",
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device_xname(self), sa->sa_nreg);
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return;
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}
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/*
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* Map two register banks:
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*
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* bank 0: status, config, reset
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* bank 1: various gem parts
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*
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*/
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if (sbus_bus_map(sa->sa_bustag,
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sa->sa_reg[0].oa_space,
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sa->sa_reg[0].oa_base,
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(bus_size_t)sa->sa_reg[0].oa_size,
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0, &sc->sc_h2) != 0) {
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aprint_error_dev(self, "cannot map registers\n");
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return;
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}
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if (sbus_bus_map(sa->sa_bustag,
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sa->sa_reg[1].oa_space,
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sa->sa_reg[1].oa_base,
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(bus_size_t)sa->sa_reg[1].oa_size,
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0, &sc->sc_h1) != 0) {
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aprint_error_dev(self, "cannot map registers\n");
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return;
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}
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prom_getether(sa->sa_node, enaddr);
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if (!strcmp("serdes", prom_getpropstring(sa->sa_node, "shared-pins")))
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sc->sc_flags |= GEM_SERDES;
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sc->sc_variant = GEM_SUN_GEM;
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sc->sc_flags &= ~GEM_PCI;
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/*
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* SBUS config
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*/
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(void) bus_space_read_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_RESET);
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delay(100);
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bus_space_write_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_CONFIG,
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GEM_SBUS_CFG_BSIZE128|GEM_SBUS_CFG_PARITY|GEM_SBUS_CFG_BMODE64);
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sc->sc_chiprev = bus_space_read_4(sa->sa_bustag, sc->sc_h2,
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GEM_SBUS_REVISION);
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printf(": GEM Ethernet controller (%s), version %s (rev 0x%02x)\n",
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sa->sa_name, prom_getpropstring(sa->sa_node, "version"),
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sc->sc_chiprev);
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gem_attach(sc, enaddr);
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/* Establish interrupt handler */
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if (sa->sa_nintr != 0)
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gsc->gsc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET,
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gem_intr, sc);
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}
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