sys/dev/eisa/depca_eisa.c

   1 /*      $NetBSD: depca_eisa.c,v 1.11 2008/04/04 12:25:07 tsutsui Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   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  * EISA bus front-end for the Digital DEPCA Ethernet controller.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: depca_eisa.c,v 1.11 2008/04/04 12:25:07 tsutsui Exp $");
  38
  39 #include "opt_inet.h"
  40 #include "bpfilter.h"
  41
  42 #include <sys/param.h>
  43 #include <sys/systm.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/syslog.h>
  46 #include <sys/socket.h>
  47 #include <sys/device.h>
  48
  49 #include <net/if.h>
  50 #include <net/if_media.h>
  51 #include <net/if_ether.h>
  52
  53 #ifdef INET
  54 #include <netinet/in.h>
  55 #include <netinet/if_inarp.h>
  56 #endif
  57
  58 #include <sys/bus.h>
  59 #include <sys/intr.h>
  60
  61 #include <dev/eisa/eisareg.h>
  62 #include <dev/eisa/eisavar.h>
  63 #include <dev/eisa/eisadevs.h>
  64
  65 #include <dev/ic/lancereg.h>
  66 #include <dev/ic/lancevar.h>
  67 #include <dev/ic/am7990reg.h>
  68 #include <dev/ic/am7990var.h>
  69 #include <dev/ic/depcareg.h>
  70 #include <dev/ic/depcavar.h>
  71
  72 static int      depca_eisa_match(device_t, cfdata_t, void *);
  73 static void     depca_eisa_attach(device_t, device_t, void *);
  74
  75 struct depca_eisa_softc {
  76         struct depca_softc sc_depca;
  77
  78         eisa_chipset_tag_t sc_ec;
  79         int sc_irq;
  80         int sc_ist;
  81 };
  82
  83 CFATTACH_DECL_NEW(depca_eisa, sizeof(struct depca_eisa_softc),
  84     depca_eisa_match, depca_eisa_attach, NULL, NULL);
  85
  86 static void     *depca_eisa_intr_establish(struct depca_softc *,
  87                                            struct lance_softc *);
  88
  89 static int
  90 depca_eisa_match(device_t parent, cfdata_t cf, void *aux)
  91 {
  92         struct eisa_attach_args *ea = aux;
  93
  94         return (strcmp(ea->ea_idstring, "DEC4220") == 0);
  95 }
  96
  97 #define DEPCA_ECU_FUNC_NETINTR  0
  98 #define DEPCA_ECU_FUNC_NETBUF   1
  99
 100 static void
 101 depca_eisa_attach(device_t parent, device_t self, void *aux)
 102 {
 103         struct depca_eisa_softc *esc = device_private(self);
 104         struct depca_softc *sc = &esc->sc_depca;
 105         struct eisa_attach_args *ea = aux;
 106         struct eisa_cfg_mem ecm;
 107         struct eisa_cfg_irq eci;
 108
 109         sc->sc_dev = self;
 110         aprint_error(": DEC DE422 Ethernet\n");
 111
 112         sc->sc_iot = ea->ea_iot;
 113         sc->sc_memt = ea->ea_memt;
 114
 115         esc->sc_ec = ea->ea_ec;
 116
 117         sc->sc_intr_establish = depca_eisa_intr_establish;
 118
 119         if (eisa_conf_read_mem(ea->ea_ec, ea->ea_slot,
 120             DEPCA_ECU_FUNC_NETBUF, 0, &ecm) != 0) {
 121                 aprint_error_dev(self, "unable to find network buffer\n");
 122                 return;
 123         }
 124
 125         aprint_normal_dev(self, "shared memory at 0x%lx-0x%lx\n",
 126             ecm.ecm_addr, ecm.ecm_addr + ecm.ecm_size - 1);
 127
 128         sc->sc_memsize = ecm.ecm_size;
 129
 130         if (bus_space_map(sc->sc_iot, EISA_SLOT_ADDR(ea->ea_slot) + 0xc00, 16,
 131             0, &sc->sc_ioh) != 0) {
 132                 aprint_error_dev(self, "unable to map i/o space\n");
 133                 return;
 134         }
 135         if (bus_space_map(sc->sc_memt, ecm.ecm_addr, sc->sc_memsize,
 136             0, &sc->sc_memh) != 0) {
 137                 aprint_error_dev(self, "unable to map memory space\n");
 138                 return;
 139         }
 140
 141         if (eisa_conf_read_irq(ea->ea_ec, ea->ea_slot,
 142             DEPCA_ECU_FUNC_NETINTR, 0, &eci) != 0) {
 143                 aprint_error_dev(self, "unable to determine IRQ\n");
 144                 return;
 145         }
 146
 147         esc->sc_irq = eci.eci_irq;
 148         esc->sc_ist = eci.eci_ist;
 149
 150         depca_attach(sc);
 151 }
 152
 153 static void *
 154 depca_eisa_intr_establish(struct depca_softc *parent, struct lance_softc *child)
 155 {
 156         struct depca_eisa_softc *esc = (struct depca_eisa_softc *)parent;
 157         eisa_intr_handle_t ih;
 158         const char *intrstr;
 159         void *rv;
 160
 161         if (eisa_intr_map(esc->sc_ec, esc->sc_irq, &ih)) {
 162                 aprint_error_dev(parent->sc_dev,
 163                     "unable to map interrupt (%d)\n", esc->sc_irq);
 164                 return (NULL);
 165         }
 166         intrstr = eisa_intr_string(esc->sc_ec, ih);
 167         rv = eisa_intr_establish(esc->sc_ec, ih, esc->sc_ist, IPL_NET,
 168             (esc->sc_ist == IST_LEVEL) ? am7990_intr : depca_intredge, child);
 169         if (rv == NULL) {
 170                 aprint_error_dev(parent->sc_dev,
 171                     "unable to establish interrupt");
 172                 if (intrstr != NULL)
 173                         aprint_error(" at %s", intrstr);
 174                 aprint_error("\n");
 175                 return (NULL);
 176         }
 177         if (intrstr != NULL)
 178                 aprint_normal_dev(parent->sc_dev, "interrupting at %s\n",
 179                     intrstr);
 180
 181         return (rv);
 182 }