Home | History | Annotate | Line # | Download | only in sbus
if_gem_sbus.c revision 1.1.4.2 
      1 /*	$NetBSD: if_gem_sbus.c,v 1.1.4.2 2006/12/10 07:18:15 yamt 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * SBus front-end for the GEM network driver
     41  */
     42 
     43 #include <sys/cdefs.h>
     44 __KERNEL_RCSID(0, "$NetBSD: if_gem_sbus.c,v 1.1.4.2 2006/12/10 07:18:15 yamt Exp $");
     45 
     46 #include <sys/param.h>
     47 #include <sys/systm.h>
     48 #include <sys/syslog.h>
     49 #include <sys/device.h>
     50 #include <sys/malloc.h>
     51 #include <sys/socket.h>
     52 
     53 #include <net/if.h>
     54 #include <net/if_dl.h>
     55 #include <net/if_ether.h>
     56 #include <net/if_media.h>
     57 
     58 #include <dev/mii/mii.h>
     59 #include <dev/mii/miivar.h>
     60 
     61 #include <machine/bus.h>
     62 #include <machine/intr.h>
     63 #include <machine/autoconf.h>
     64 
     65 #include <dev/sbus/sbusvar.h>
     66 
     67 #include <dev/ic/gemreg.h>
     68 #include <dev/ic/gemvar.h>
     69 
     70 struct gem_sbus_softc {
     71 	struct	gem_softc	gsc_gem;	/* GEM device */
     72 	struct sbusdev		gsc_sd;
     73 	void			*gsc_ih;
     74 	bus_space_handle_t	gsc_sbus_regs_h;
     75 };
     76 
     77 int	gemmatch_sbus(struct device *, struct cfdata *, void *);
     78 void	gemattach_sbus(struct device *, struct device *, void *);
     79 
     80 CFATTACH_DECL(gem_sbus, sizeof(struct gem_sbus_softc),
     81     gemmatch_sbus, gemattach_sbus, NULL, NULL);
     82 
     83 int
     84 gemmatch_sbus(struct device *parent, struct cfdata *cf, void *aux)
     85 {
     86 	struct sbus_attach_args *sa = aux;
     87 
     88 	return (strcmp("network", sa->sa_name) == 0);
     89 }
     90 
     91 void
     92 gemattach_sbus(struct device *parent, struct device *self, void *aux)
     93 {
     94 	struct sbus_attach_args *sa = aux;
     95 	struct gem_sbus_softc *gsc = (void *)self;
     96 	struct gem_softc *sc = &gsc->gsc_gem;
     97 	uint8_t enaddr[ETHER_ADDR_LEN];
     98 
     99 	/* Pass on the bus tags */
    100 	sc->sc_bustag = sa->sa_bustag;
    101 	sc->sc_dmatag = sa->sa_dmatag;
    102 
    103 	printf(": GEM Ethernet controller (%s), version %s\n",
    104 	    sa->sa_name, prom_getpropstring(sa->sa_node, "version"));
    105 
    106 	if (sa->sa_nreg < 2) {
    107 		printf("%s: only %d register sets\n",
    108 			self->dv_xname, sa->sa_nreg);
    109 		return;
    110 	}
    111 
    112 	/*
    113 	 * Map two register banks:
    114 	 *
    115 	 *	bank 0: status, config, reset
    116 	 *	bank 1: various gem parts
    117 	 *
    118 	 */
    119 	if (sbus_bus_map(sa->sa_bustag,
    120 			 sa->sa_reg[0].oa_space,
    121 			 sa->sa_reg[0].oa_base,
    122 			 (bus_size_t)sa->sa_reg[0].oa_size,
    123 			 0, &sc->sc_h2) != 0) {
    124 		printf("%s: cannot map registers\n", self->dv_xname);
    125 		return;
    126 	}
    127 	if (sbus_bus_map(sa->sa_bustag,
    128 			 sa->sa_reg[1].oa_space,
    129 			 sa->sa_reg[1].oa_base,
    130 			 (bus_size_t)sa->sa_reg[1].oa_size,
    131 			 0, &sc->sc_h1) != 0) {
    132 		printf("%s: cannot map registers\n", self->dv_xname);
    133 		return;
    134 	}
    135 	sbus_establish(&gsc->gsc_sd, self);
    136 	prom_getether(sa->sa_node, enaddr);
    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