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if_gem_sbus.c revision 1.6 
      1 /*	$NetBSD: if_gem_sbus.c,v 1.6 2008/04/28 20:23:57 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2006 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Martin Husemann.
      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 for the GEM network driver
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 __KERNEL_RCSID(0, "$NetBSD: if_gem_sbus.c,v 1.6 2008/04/28 20:23:57 martin 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/malloc.h>
     44 #include <sys/socket.h>
     45 
     46 #include <net/if.h>
     47 #include <net/if_dl.h>
     48 #include <net/if_ether.h>
     49 #include <net/if_media.h>
     50 
     51 #include <dev/mii/mii.h>
     52 #include <dev/mii/miivar.h>
     53 
     54 #include <sys/bus.h>
     55 #include <sys/intr.h>
     56 #include <machine/autoconf.h>
     57 
     58 #include <dev/sbus/sbusvar.h>
     59 
     60 #include <dev/ic/gemreg.h>
     61 #include <dev/ic/gemvar.h>
     62 
     63 struct gem_sbus_softc {
     64 	struct	gem_softc	gsc_gem;	/* GEM device */
     65 	struct sbusdev		gsc_sd;
     66 	void			*gsc_ih;
     67 	bus_space_handle_t	gsc_sbus_regs_h;
     68 };
     69 
     70 int	gemmatch_sbus(struct device *, struct cfdata *, void *);
     71 void	gemattach_sbus(struct device *, struct device *, void *);
     72 
     73 CFATTACH_DECL(gem_sbus, sizeof(struct gem_sbus_softc),
     74     gemmatch_sbus, gemattach_sbus, NULL, NULL);
     75 
     76 int
     77 gemmatch_sbus(struct device *parent, struct cfdata *cf, void *aux)
     78 {
     79 	struct sbus_attach_args *sa = aux;
     80 
     81 	return (strcmp("network", sa->sa_name) == 0);
     82 }
     83 
     84 void
     85 gemattach_sbus(struct device *parent, struct device *self, void *aux)
     86 {
     87 	struct sbus_attach_args *sa = aux;
     88 	struct gem_sbus_softc *gsc = (void *)self;
     89 	struct gem_softc *sc = &gsc->gsc_gem;
     90 	uint8_t enaddr[ETHER_ADDR_LEN];
     91 
     92 	/* Pass on the bus tags */
     93 	sc->sc_bustag = sa->sa_bustag;
     94 	sc->sc_dmatag = sa->sa_dmatag;
     95 
     96 	sc->sc_chiprev = prom_getpropint(sa->sa_node, "gem-rev", 0);
     97 
     98 	printf(": GEM Ethernet controller (%s), version %s (rev 0x%02x)\n",
     99 	    sa->sa_name, prom_getpropstring(sa->sa_node, "version"),
    100 	    sc->sc_chiprev);
    101 
    102 	if (sa->sa_nreg < 2) {
    103 		printf("%s: only %d register sets\n",
    104 			device_xname(self), sa->sa_nreg);
    105 		return;
    106 	}
    107 
    108 	/*
    109 	 * Map two register banks:
    110 	 *
    111 	 *	bank 0: status, config, reset
    112 	 *	bank 1: various gem parts
    113 	 *
    114 	 */
    115 	if (sbus_bus_map(sa->sa_bustag,
    116 			 sa->sa_reg[0].oa_space,
    117 			 sa->sa_reg[0].oa_base,
    118 			 (bus_size_t)sa->sa_reg[0].oa_size,
    119 			 0, &sc->sc_h2) != 0) {
    120 		aprint_error_dev(self, "cannot map registers\n");
    121 		return;
    122 	}
    123 	if (sbus_bus_map(sa->sa_bustag,
    124 			 sa->sa_reg[1].oa_space,
    125 			 sa->sa_reg[1].oa_base,
    126 			 (bus_size_t)sa->sa_reg[1].oa_size,
    127 			 0, &sc->sc_h1) != 0) {
    128 		aprint_error_dev(self, "cannot map registers\n");
    129 		return;
    130 	}
    131 	sbus_establish(&gsc->gsc_sd, self);
    132 	prom_getether(sa->sa_node, enaddr);
    133 
    134 	if (!strcmp("serdes", prom_getpropstring(sa->sa_node, "shared-pins")))
    135 		sc->sc_flags |= GEM_SERDES;
    136 	sc->sc_variant = GEM_SUN_GEM;
    137 
    138 	/*
    139 	 * SBUS config
    140 	 */
    141 	bus_space_write_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_CONFIG,
    142 	    GEM_SBUS_CFG_PARITY|GEM_SBUS_CFG_BMODE64);
    143 
    144 	gem_attach(sc, enaddr);
    145 
    146 	/* Establish interrupt handler */
    147 	if (sa->sa_nintr != 0)
    148 		gsc->gsc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET,
    149 					gem_intr, sc);
    150 }
    151