sys/dev/sbus/if_gem_sbus.c

   1 /*      $NetBSD: if_gem_sbus.c,v 1.12 2009/08/04 09:26:26 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 1.12 2009/08/04 09:26:26 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         void                    *gsc_ih;
  66         bus_space_handle_t      gsc_sbus_regs_h;
  67 };
  68
  69 int     gemmatch_sbus(device_t, cfdata_t, void *);
  70 void    gemattach_sbus(device_t, device_t, void *);
  71
  72 CFATTACH_DECL3_NEW(gem_sbus, sizeof(struct gem_sbus_softc),
  73     gemmatch_sbus, gemattach_sbus, NULL, NULL, NULL, NULL, 0);
  74
  75 int
  76 gemmatch_sbus(device_t parent, cfdata_t cf, void *aux)
  77 {
  78         struct sbus_attach_args *sa = aux;
  79
  80         return (strcmp("network", sa->sa_name) == 0);
  81 }
  82
  83 void
  84 gemattach_sbus(device_t parent, device_t self, void *aux)
  85 {
  86         struct sbus_attach_args *sa = aux;
  87         struct gem_sbus_softc *gsc = device_private(self);
  88         struct gem_softc *sc = &gsc->gsc_gem;
  89         uint8_t enaddr[ETHER_ADDR_LEN];
  90
  91         sc->sc_dev = self;
  92
  93         /* Pass on the bus tags */
  94         sc->sc_bustag = sa->sa_bustag;
  95         sc->sc_dmatag = sa->sa_dmatag;
  96
  97         if (sa->sa_nreg < 2) {
  98                 printf("%s: only %d register sets\n",
  99                         device_xname(self), sa->sa_nreg);
 100                 return;
 101         }
 102
 103         /*
 104          * Map two register banks:
 105          *
 106          *      bank 0: status, config, reset
 107          *      bank 1: various gem parts
 108          *
 109          */
 110         if (sbus_bus_map(sa->sa_bustag,
 111                          sa->sa_reg[0].oa_space,
 112                          sa->sa_reg[0].oa_base,
 113                          (bus_size_t)sa->sa_reg[0].oa_size,
 114                          0, &sc->sc_h2) != 0) {
 115                 aprint_error_dev(self, "cannot map registers\n");
 116                 return;
 117         }
 118         if (sbus_bus_map(sa->sa_bustag,
 119                          sa->sa_reg[1].oa_space,
 120                          sa->sa_reg[1].oa_base,
 121                          (bus_size_t)sa->sa_reg[1].oa_size,
 122                          0, &sc->sc_h1) != 0) {
 123                 aprint_error_dev(self, "cannot map registers\n");
 124                 return;
 125         }
 126         prom_getether(sa->sa_node, enaddr);
 127
 128         if (!strcmp("serdes", prom_getpropstring(sa->sa_node, "shared-pins")))
 129                 sc->sc_flags |= GEM_SERDES;
 130         sc->sc_variant = GEM_SUN_GEM;
 131         sc->sc_flags &= ~GEM_PCI;
 132
 133         /*
 134          * SBUS config
 135          */
 136         (void) bus_space_read_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_RESET);
 137         delay(100);
 138         bus_space_write_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_CONFIG,
 139             GEM_SBUS_CFG_BSIZE128|GEM_SBUS_CFG_PARITY|GEM_SBUS_CFG_BMODE64);
 140         sc->sc_chiprev = bus_space_read_4(sa->sa_bustag, sc->sc_h2,
 141             GEM_SBUS_REVISION);
 142
 143         printf(": GEM Ethernet controller (%s), version %s (rev 0x%02x)\n",
 144             sa->sa_name, prom_getpropstring(sa->sa_node, "version"),
 145             sc->sc_chiprev);
 146
 147         gem_attach(sc, enaddr);
 148
 149         /* Establish interrupt handler */
 150         if (sa->sa_nintr != 0)
 151                 gsc->gsc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET,
 152                                         gem_intr, sc);
 153 }