sys/arch/arc/jazz/if_sn_jazzio.c

   1 /*      $NetBSD: if_sn_jazzio.c,v 1.10 2008/04/23 13:29:45 tsutsui Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2001 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  * Microsoft JAZZ front-end for for the National Semiconductor DP83932
  34  * Systems-Oriented Network Interface Controller (SONIC).
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __KERNEL_RCSID(0, "$NetBSD: if_sn_jazzio.c,v 1.10 2008/04/23 13:29:45 tsutsui Exp $");
  39
  40 #include "bpfilter.h"
  41
  42 #include <sys/param.h>
  43 #include <sys/systm.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/malloc.h>
  46 #include <sys/kernel.h>
  47 #include <sys/socket.h>
  48 #include <sys/ioctl.h>
  49 #include <sys/errno.h>
  50 #include <sys/device.h>
  51 #include <sys/kcore.h>
  52
  53 #include <net/if.h>
  54 #include <net/if_dl.h>
  55 #include <net/if_ether.h>
  56
  57 #include <machine/autoconf.h>
  58 #include <machine/bus.h>
  59 #include <machine/intr.h>
  60
  61 #include <dev/ic/dp83932reg.h>
  62 #include <dev/ic/dp83932var.h>
  63
  64 #include <arc/arc/arcbios.h>
  65 #include <arc/jazz/jazziovar.h>
  66
  67 int     sonic_jazzio_match(device_t, cfdata_t, void *);
  68 void    sonic_jazzio_attach(device_t, device_t, void *);
  69
  70 CFATTACH_DECL_NEW(sn_jazzio, sizeof(struct sonic_softc),
  71     sonic_jazzio_match, sonic_jazzio_attach, NULL, NULL);
  72
  73 int
  74 sonic_jazzio_match(device_t parent, cfdata_t cf, void *aux)
  75 {
  76         struct jazzio_attach_args *ja = aux;
  77
  78         if (strcmp(ja->ja_name, "SONIC") != 0)
  79                 return 0;
  80
  81         return 1;
  82 }
  83
  84 void
  85 sonic_jazzio_attach(device_t parent, device_t self, void *aux)
  86 {
  87         struct sonic_softc *sc = device_private(self);
  88         struct jazzio_attach_args *ja = aux;
  89         int i;
  90         uint8_t enaddr[ETHER_ADDR_LEN];
  91
  92         sc->sc_dev = self;
  93         sc->sc_st = ja->ja_bust;
  94         sc->sc_dmat = ja->ja_dmat;
  95
  96         aprint_normal(": SONIC Ethernet\n");
  97
  98         /* Map the device. */
  99         if (bus_space_map(sc->sc_st, ja->ja_addr, SONIC_NREGS * 4,
 100             0, &sc->sc_sh) != 0) {
 101                 aprint_error_dev(sc->sc_dev, "unable to map SONIC registers\n");
 102                 return;
 103         }
 104
 105         /* We run in 32-bit mode. */
 106         sc->sc_32bit = 1;
 107
 108         /* BMODE is set for little-endian. */
 109         sc->sc_bigendian = 0;
 110
 111         /* Regs are 16-bit, plus 16-bit pad. */
 112         for (i = 0; i < SONIC_NREGS; i++)
 113                 sc->sc_regmap[i] = i * 4;
 114
 115         /*
 116          * Configure DCR:
 117          *
 118          *      - Latched bug retry
 119          *      - Synchronous bus (memory cycle 2 clocks)
 120          *      - 0 wait states added (WC0,WC1 == 0,0)
 121          *      - 4 byte Rx DMA threshold (RFT0,RFT1 == 0,0)
 122          *      - 28 byte Tx DMA threshold (TFT0,TFT1 == 1,1)
 123          *        XXX There was a comment
 124          *              "XXX RFT & TFT according to MIPS manual"
 125          *            in old MD sys/arch/arc/dev/if_sn.c in Attic.
 126          */
 127         sc->sc_dcr = DCR_LBR | DCR_SBUS | DCR_TFT0 | DCR_TFT1;
 128         sc->sc_dcr2 = 0;
 129
 130         /* Hook up our interrupt handler. */
 131         jazzio_intr_establish(ja->ja_intr, sonic_intr, sc);
 132
 133         /* The Ethernet address is from the product ID. */
 134         memcpy(enaddr, arc_product_id, sizeof(enaddr));
 135
 136         /* Finish off the attach. */
 137         sonic_attach(sc, enaddr);
 138 }