sys/arch/evbarm/gumstix/if_sm_gxio.c

   1 /*      $NetBSD: if_sm_gxio.c,v 1.6 2008/05/11 08:23:17 kiyohara Exp $ */
   2 /*
   3  * Copyright (C) 2005, 2006 WIDE Project and SOUM Corporation.
   4  * All rights reserved.
   5  *
   6  * Written by Takashi Kiyohara and Susumu Miki for WIDE Project and SOUM
   7  * Corporation.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project nor the name of SOUM Corporation
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT and SOUM CORPORATION ``AS IS''
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT AND SOUM CORPORATION
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 /*-
  34  * Copyright (c) 1997 The NetBSD Foundation, Inc.
  35  * All rights reserved.
  36  *
  37  * This code is derived from software contributed to The NetBSD Foundation
  38  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
  39  * NASA Ames Research Center.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  51  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  52  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  53  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  54  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  55  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  56  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  57  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  58  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  59  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  60  * POSSIBILITY OF SUCH DAMAGE.
  61  */
  62
  63 #include <sys/cdefs.h>
  64 __KERNEL_RCSID(0, "$NetBSD: if_sm_gxio.c,v 1.6 2008/05/11 08:23:17 kiyohara Exp $");
  65
  66 #include <sys/param.h>
  67 #include <sys/device.h>
  68 #include <sys/errno.h>
  69
  70 #include <sys/systm.h>
  71 #include <sys/mbuf.h>
  72 #include <sys/socket.h>
  73 #include <sys/ioctl.h>
  74 #include <sys/syslog.h>
  75 #include <sys/select.h>
  76
  77 #include <net/if.h>
  78 #include <net/if_dl.h>
  79 #include <net/if_ether.h>
  80 #include <net/if_media.h>
  81
  82 #include <machine/intr.h>
  83 #include <machine/bus.h>
  84
  85 #include <dev/mii/mii.h>
  86 #include <dev/mii/miivar.h>
  87
  88 #include <dev/ic/smc91cxxreg.h>
  89 #include <dev/ic/smc91cxxvar.h>
  90
  91 #include <evbarm/gumstix/gumstixvar.h>
  92
  93 #include "locators.h"
  94
  95
  96 static int sm_gxio_match(device_t, struct cfdata *, void *);
  97 static void sm_gxio_attach(device_t, device_t, void *);
  98
  99 static int ether_serial_digit = 1;
 100
 101 struct sm_gxio_softc {
 102         struct  smc91cxx_softc sc_smc;
 103         void    *sc_ih;
 104 };
 105
 106 CFATTACH_DECL(sm_gxio, sizeof(struct sm_gxio_softc),
 107     sm_gxio_match, sm_gxio_attach, NULL, NULL);
 108
 109
 110 /* ARGSUSED */
 111 static int
 112 sm_gxio_match(device_t parent, struct cfdata *match, void *aux)
 113 {
 114         struct gxio_attach_args *gxa = aux;
 115         bus_space_tag_t iot = gxa->gxa_iot;
 116         bus_space_handle_t ioh;
 117         uint16_t tmp;
 118         int rv = 0;
 119         extern const char *smc91cxx_idstrs[];
 120
 121         /* Disallow wildcarded values. */
 122         if (gxa->gxa_addr == GXIOCF_ADDR_DEFAULT)
 123                 return 0;
 124         if (gxa->gxa_gpirq == GXIOCF_GPIRQ_DEFAULT)
 125                 return 0;
 126
 127         if (bus_space_map(iot, gxa->gxa_addr, SMC_IOSIZE, 0, &ioh) != 0)
 128                 return 0;
 129
 130         /* Check that high byte of BANK_SELECT is what we expect. */
 131         tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
 132         if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
 133                 goto out;
 134
 135         /*
 136          * Switch to bank 0 and perform the test again.
 137          * XXX INVASIVE!
 138          */
 139         bus_space_write_1(iot, ioh, BANK_SELECT_REG_W, 0);
 140         tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
 141         if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
 142                 goto out;
 143
 144         /*
 145          * Check for a recognized chip id.
 146          * XXX INVASIVE!
 147          */
 148         bus_space_write_1(iot, ioh, BANK_SELECT_REG_W, 3);
 149         tmp = bus_space_read_2(iot, ioh, REVISION_REG_W);
 150         if (smc91cxx_idstrs[RR_ID(tmp)] == NULL)
 151                 goto out;
 152
 153         if (ether_serial_digit > 15)
 154                 goto out;
 155         /*
 156          * Assume we have an SMC91Cxx.
 157          */
 158
 159         rv = 1;
 160
 161  out:
 162         bus_space_unmap(iot, ioh, SMC_IOSIZE);
 163         return rv;
 164 }
 165
 166 /* ARGSUSED */
 167 static void
 168 sm_gxio_attach(device_t parent, device_t self, void *aux)
 169 {
 170         struct sm_gxio_softc *gsc = device_private(self);
 171         struct smc91cxx_softc *sc = &gsc->sc_smc;
 172         struct gxio_attach_args *gxa = aux;
 173         bus_space_handle_t ioh;
 174         uint8_t myea[ETHER_ADDR_LEN];
 175
 176         aprint_normal("\n");
 177         aprint_naive("\n");
 178
 179         KASSERT(system_serial_high != 0 || system_serial_low != 0);
 180
 181         /* Map i/o space. */
 182         if (bus_space_map(gxa->gxa_iot, gxa->gxa_addr, SMC_IOSIZE, 0, &ioh))
 183                 panic("sm_gxio_attach: can't map i/o space");
 184
 185         sc->sc_bst = gxa->gxa_iot;
 186         sc->sc_bsh = ioh;
 187
 188         /* should always be enabled */
 189         sc->sc_flags |= SMC_FLAGS_ENABLED;
 190
 191         myea[0] = ((system_serial_high >> 8) & 0xfe) | 0x02;
 192         myea[1] = system_serial_high;
 193         myea[2] = system_serial_low >> 24;
 194         myea[3] = system_serial_low >> 16;
 195         myea[4] = system_serial_low >> 8;
 196         myea[5] = (system_serial_low & 0xc0) |
 197             (1 << 4) | ((ether_serial_digit++) & 0x0f);
 198         smc91cxx_attach(sc, myea);
 199
 200         /* Establish the interrupt handler. */
 201         gsc->sc_ih = gxio_intr_establish(gxa->gxa_sc,
 202             gxa->gxa_gpirq, IST_EDGE_RISING, IPL_NET, smc91cxx_intr, sc);
 203
 204         if (gsc->sc_ih == NULL)
 205                 aprint_error_dev(self,
 206                     "couldn't establish interrupt handler\n");
 207 }