sys/dev/sbus/if_hme_sbus.c

   1 /*      $NetBSD: if_hme_sbus.c,v 1.32 2009/09/08 18:15:17 tsutsui Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Paul Kranenburg.
   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 device driver for the HME ethernet device.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: if_hme_sbus.c,v 1.32 2009/09/08 18:15:17 tsutsui 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 #include <dev/ic/hmevar.h>
  60
  61 struct hmesbus_softc {
  62         struct  hme_softc       hsc_hme;        /* HME device */
  63         /* sbus specific stuff here */
  64 };
  65
  66 int     hmematch_sbus(device_t, cfdata_t, void *);
  67 void    hmeattach_sbus(device_t, device_t, void *);
  68
  69 CFATTACH_DECL_NEW(hme_sbus, sizeof(struct hmesbus_softc),
  70     hmematch_sbus, hmeattach_sbus, NULL, NULL);
  71
  72 int
  73 hmematch_sbus(device_t parent, cfdata_t cf, void *aux)
  74 {
  75         struct sbus_attach_args *sa = aux;
  76
  77         return (strcmp(cf->cf_name, sa->sa_name) == 0 ||
  78             strcmp("SUNW,qfe", sa->sa_name) == 0 ||
  79             strcmp("SUNW,hme", sa->sa_name) == 0);
  80 }
  81
  82 void
  83 hmeattach_sbus(device_t parent, device_t self, void *aux)
  84 {
  85         struct sbus_attach_args *sa = aux;
  86         struct hmesbus_softc *hsc = device_private(self);
  87         struct hme_softc *sc = &hsc->hsc_hme;
  88         struct sbus_softc *sbsc = device_private(parent);
  89         uint32_t burst, sbusburst;
  90         int node;
  91
  92         sc->sc_dev = self;
  93         node = sa->sa_node;
  94
  95         /* Pass on the bus tags */
  96         sc->sc_bustag = sa->sa_bustag;
  97         sc->sc_dmatag = sa->sa_dmatag;
  98
  99         aprint_normal(": Sun Happy Meal Ethernet (%s)\n",
 100             sa->sa_name);
 101
 102         if (sa->sa_nreg < 5) {
 103                 aprint_error_dev(self, "only %d register sets\n",
 104                     sa->sa_nreg);
 105                 return;
 106         }
 107
 108         /*
 109          * Map five register banks:
 110          *
 111          *      bank 0: HME SEB registers
 112          *      bank 1: HME ETX registers
 113          *      bank 2: HME ERX registers
 114          *      bank 3: HME MAC registers
 115          *      bank 4: HME MIF registers
 116          *
 117          */
 118         if (sbus_bus_map(sa->sa_bustag,
 119                          sa->sa_reg[0].oa_space,
 120                          sa->sa_reg[0].oa_base,
 121                          (bus_size_t)sa->sa_reg[0].oa_size,
 122                          0, &sc->sc_seb) != 0) {
 123                 aprint_error_dev(self, "cannot map SEB registers\n");
 124                 return;
 125         }
 126         if (sbus_bus_map(sa->sa_bustag,
 127                          sa->sa_reg[1].oa_space,
 128                          sa->sa_reg[1].oa_base,
 129                          (bus_size_t)sa->sa_reg[1].oa_size,
 130                          0, &sc->sc_etx) != 0) {
 131                 aprint_error_dev(self, "cannot map ETX registers\n");
 132                 return;
 133         }
 134         if (sbus_bus_map(sa->sa_bustag,
 135                          sa->sa_reg[2].oa_space,
 136                          sa->sa_reg[2].oa_base,
 137                          (bus_size_t)sa->sa_reg[2].oa_size,
 138                          0, &sc->sc_erx) != 0) {
 139                 aprint_error_dev(self, "cannot map ERX registers\n");
 140                 return;
 141         }
 142         if (sbus_bus_map(sa->sa_bustag,
 143                          sa->sa_reg[3].oa_space,
 144                          sa->sa_reg[3].oa_base,
 145                          (bus_size_t)sa->sa_reg[3].oa_size,
 146                          0, &sc->sc_mac) != 0) {
 147                 aprint_error_dev(self, "cannot map MAC registers\n");
 148                 return;
 149         }
 150         if (sbus_bus_map(sa->sa_bustag,
 151                          sa->sa_reg[4].oa_space,
 152                          sa->sa_reg[4].oa_base,
 153                          (bus_size_t)sa->sa_reg[4].oa_size,
 154                          0, &sc->sc_mif) != 0) {
 155                 aprint_error_dev(self, "cannot map MIF registers\n");
 156                 return;
 157         }
 158
 159         prom_getether(node, sc->sc_enaddr);
 160
 161         /*
 162          * Get transfer burst size from PROM and pass it on
 163          * to the back-end driver.
 164          */
 165         sbusburst = sbsc->sc_burst;
 166         if (sbusburst == 0)
 167                 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
 168
 169         burst = prom_getpropint(node, "burst-sizes", -1);
 170         if (burst == -1)
 171                 /* take SBus burst sizes */
 172                 burst = sbusburst;
 173
 174         /* Clamp at parent's burst sizes */
 175         burst &= sbusburst;
 176
 177         /* Translate into plain numerical format */
 178         sc->sc_burst =  (burst & SBUS_BURST_32) ? 32 :
 179                         (burst & SBUS_BURST_16) ? 16 : 0;
 180
 181         sc->sc_pci = 0; /* XXXXX should all be done in bus_dma. */
 182         hme_config(sc);
 183
 184         /* Establish interrupt handler */
 185         if (sa->sa_nintr != 0)
 186                 (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET,
 187                                          hme_intr, sc);
 188 }