sys/arch/mac68k/obio/if_sn_obio.c

   1 /*      $NetBSD: if_sn_obio.c,v 1.27 2007/10/17 19:55:16 garbled Exp $  */
   2
   3 /*
   4  * Copyright (C) 1997 Allen Briggs
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Allen Briggs
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: if_sn_obio.c,v 1.27 2007/10/17 19:55:16 garbled Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/device.h>
  38 #include <sys/systm.h>
  39 #include <sys/ioctl.h>
  40
  41 #include <net/if.h>
  42 #include <net/if_ether.h>
  43
  44 #include <machine/bus.h>
  45 #include <machine/cpu.h>
  46 #include <machine/viareg.h>
  47
  48 #include <dev/ic/dp83932reg.h>
  49 #include <dev/ic/dp83932var.h>
  50
  51 #include <mac68k/obio/obiovar.h>
  52 #include <mac68k/dev/if_snvar.h>
  53
  54 #define SONIC_REG_BASE  0x50F0A000
  55 #define SONIC_PROM_BASE 0x50F08000
  56 #define SONIC_SLOTNO    9
  57
  58 static int      sn_obio_match(device_t, cfdata_t, void *);
  59 static void     sn_obio_attach(device_t, device_t, void *);
  60 static int      sn_obio_getaddr(struct sonic_softc *, uint8_t *);
  61 static int      sn_obio_getaddr_kludge(struct sonic_softc *, uint8_t *);
  62
  63 CFATTACH_DECL_NEW(sn_obio, sizeof(struct sonic_softc),
  64     sn_obio_match, sn_obio_attach, NULL, NULL);
  65
  66 static int
  67 sn_obio_match(device_t parent, cfdata_t cf, void *aux)
  68 {
  69         struct obio_attach_args *oa = aux;
  70         bus_space_handle_t bsh;
  71         int found = 0;
  72
  73         if (!mac68k_machine.sonic)
  74                 return 0;
  75
  76         if (bus_space_map(oa->oa_tag,
  77             SONIC_REG_BASE, SONIC_NREGS * 4, 0, &bsh))
  78                 return 0;
  79
  80         if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 4))
  81                 found = 1;
  82
  83         bus_space_unmap(oa->oa_tag, bsh, SONIC_NREGS * 4);
  84
  85         return found;
  86 }
  87
  88 /*
  89  * Install interface into kernel networking data structures
  90  */
  91 static void
  92 sn_obio_attach(device_t parent, device_t self, void *aux)
  93 {
  94         struct sonic_softc *sc = device_private(self);
  95         struct obio_attach_args *oa = aux;
  96         uint8_t myaddr[ETHER_ADDR_LEN];
  97         int i;
  98
  99         sc->sc_dev = self;
 100         sc->sc_st = oa->oa_tag;
 101         sc->sc_dmat = oa->oa_dmat;
 102
 103         if (bus_space_map(sc->sc_st,
 104             SONIC_REG_BASE, SONIC_NREGS * 4, 0, &sc->sc_sh)) {
 105                 aprint_error(": failed to map space for SONIC regs.\n");
 106                 return;
 107         }
 108
 109         /* regs are addressed as words, big-endian. */
 110         for (i = 0; i < SONIC_NREGS; i++) {
 111                 sc->sc_regmap[i] = (bus_size_t)((i * 4) + 2);
 112         }
 113
 114         sc->sc_bigendian = 1;
 115
 116         sc->sc_dcr = DCR_BMS | DCR_RFT1 | DCR_TFT0;
 117         sc->sc_dcr2 = 0;
 118
 119         switch (current_mac_model->machineid) {
 120         case MACH_MACC610:
 121         case MACH_MACC650:
 122         case MACH_MACQ610:
 123         case MACH_MACQ650:
 124         case MACH_MACQ700:
 125         case MACH_MACQ800:
 126         case MACH_MACQ900:
 127         case MACH_MACQ950:
 128                 sc->sc_dcr |= DCR_EXBUS;
 129                 sc->sc_32bit = 1;
 130                 break;
 131
 132         case MACH_MACLC575:
 133         case MACH_MACP580:
 134         case MACH_MACQ630:
 135                 /* Apple Comm Slot cards; assume they are 32 bit */
 136                 sc->sc_dcr |= DCR_EXBUS | DCR_USR1 | DCR_USR0;
 137                 sc->sc_32bit = 1;
 138                 break;
 139
 140         case MACH_MACPB500:
 141                 sc->sc_dcr |= DCR_SBUS | DCR_LBR;
 142                 sc->sc_32bit = 0;       /* 16 bit interface */
 143                 break;
 144
 145         default:
 146                 aprint_error(": unsupported machine type\n");
 147                 return;
 148         }
 149
 150         if (sn_obio_getaddr(sc, myaddr) &&
 151             sn_obio_getaddr_kludge(sc, myaddr)) { /* XXX kludge for PB */
 152                 aprint_error(": failed to get MAC address.\n");
 153                 bus_space_unmap(sc->sc_st, sc->sc_sh, SONIC_NREGS * 4);
 154                 return;
 155         }
 156
 157         aprint_normal(": integrated SONIC Ethernet adapter\n");
 158
 159         if (mac68k_machine.aux_interrupts) {
 160                 intr_establish(sonic_intr, (void *)sc, 3);
 161         } else {
 162                 add_nubus_intr(SONIC_SLOTNO, (void (*)(void *))sonic_intr,
 163                     (void *)sc);
 164         }
 165
 166         sonic_attach(sc, myaddr);
 167 }
 168
 169 static int
 170 sn_obio_getaddr(struct sonic_softc *sc, uint8_t *lladdr)
 171 {
 172         bus_space_handle_t bsh;
 173
 174         if (bus_space_map(sc->sc_st, SONIC_PROM_BASE, PAGE_SIZE, 0, &bsh)) {
 175                 aprint_error(": failed to map space to read SONIC address.\n");
 176                 aprint_normal("%s:", device_xname(sc->sc_dev));
 177                 return -1;
 178         }
 179
 180         if (!mac68k_bus_space_probe(sc->sc_st, bsh, 0, 1)) {
 181                 bus_space_unmap(sc->sc_st, bsh, PAGE_SIZE);
 182                 return -1;
 183         }
 184
 185         sn_get_enaddr(sc->sc_st, bsh, 0, lladdr);
 186
 187         bus_space_unmap(sc->sc_st, bsh, PAGE_SIZE);
 188
 189         return 0;
 190 }
 191
 192 /*
 193  * Assume that the SONIC was initialized in MacOS.  This should go away
 194  * when we can properly get the MAC address on the PBs.
 195  */
 196 static int
 197 sn_obio_getaddr_kludge(struct sonic_softc *sc, u_int8_t *lladdr)
 198 {
 199         int i, ors = 0;
 200
 201         /* Shut down NIC */
 202         CSR_WRITE(sc, SONIC_CR, CR_RST);
 203
 204         /* For some reason, Apple fills top first. */
 205         CSR_WRITE(sc, SONIC_CEP, 15);
 206
 207         i = CSR_READ(sc, SONIC_CAP2);
 208
 209         ors |= i;
 210         lladdr[5] = i >> 8;
 211         lladdr[4] = i;
 212
 213         i = CSR_READ(sc, SONIC_CAP1);
 214
 215         ors |= i;
 216         lladdr[3] = i >> 8;
 217         lladdr[2] = i;
 218
 219         i = CSR_READ(sc, SONIC_CAP0);
 220
 221         ors |= i;
 222         lladdr[1] = i >> 8;
 223         lladdr[0] = i;
 224
 225         CSR_WRITE(sc, SONIC_CR, 0);
 226
 227         if (ors == 0)
 228                 return -1;
 229
 230         return 0;
 231 }