sys/arch/evbarm/lubbock/if_sm_obio.c

   1 /*      $NetBSD: if_sm_obio.c,v 1.2 2008/04/28 20:23:17 martin Exp $ */
   2
   3 /*
   4  * Copyright (c) 2002, 2003  Genetec Corporation.  All rights reserved.
   5  * Written by Hiroyuki Bessho for Genetec Corporation.
   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. The name of Genetec Corporation may not be used to endorse or
  16  *    promote products derived from this software without specific prior
  17  *    written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
  20  * 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 GENETEC CORPORATION
  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  * attach sm driver to Lubbock on-board bus
  32  * based on sys/dev/isa/if_sm_isa.c
  33  *
  34  */
  35
  36 /*-
  37  * Copyright (c) 1997 The NetBSD Foundation, Inc.
  38  * All rights reserved.
  39  *
  40  * This code is derived from software contributed to The NetBSD Foundation
  41  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
  42  * NASA Ames Research Center.
  43  *
  44  * Redistribution and use in source and binary forms, with or without
  45  * modification, are permitted provided that the following conditions
  46  * are met:
  47  * 1. Redistributions of source code must retain the above copyright
  48  *    notice, this list of conditions and the following disclaimer.
  49  * 2. Redistributions in binary form must reproduce the above copyright
  50  *    notice, this list of conditions and the following disclaimer in the
  51  *    documentation and/or other materials provided with the distribution.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  54  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  55  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  56  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  57  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  58  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  59  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  60  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  61  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  62  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  63  * POSSIBILITY OF SUCH DAMAGE.
  64  */
  65
  66 #include <sys/cdefs.h>
  67 __KERNEL_RCSID(0, "$NetBSD: if_sm_obio.c,v 1.2 2008/04/28 20:23:17 martin Exp $");
  68
  69 #include <sys/param.h>
  70 #include <sys/systm.h>
  71 #include <sys/mbuf.h>
  72 #include <sys/socket.h>
  73 #include <sys/ioctl.h>
  74 #include <sys/errno.h>
  75 #include <sys/syslog.h>
  76 #include <sys/select.h>
  77 #include <sys/device.h>
  78
  79 #include <net/if.h>
  80 #include <net/if_dl.h>
  81 #include <net/if_ether.h>
  82 #include <net/if_media.h>
  83
  84 #include <machine/intr.h>
  85 #include <machine/bus.h>
  86
  87 #include <dev/mii/mii.h>
  88 #include <dev/mii/miivar.h>
  89
  90 #include <dev/ic/smc91cxxreg.h>
  91 #include <dev/ic/smc91cxxvar.h>
  92
  93 #include <evbarm/lubbock/lubbock_var.h>
  94
  95 #include "opt_lubbock.h"        /* LUBBOCK_SMC91C96_16BIT */
  96
  97 int     sm_obio_match(struct device *, struct cfdata *, void *);
  98 void    sm_obio_attach(struct device *, struct device *, void *);
  99
 100 struct sm_obio_softc {
 101         struct  smc91cxx_softc sc_smc;          /* real "smc" softc */
 102
 103         /* OBIO-specific goo. */
 104         void    *sc_ih;                         /* interrupt handler */
 105 };
 106
 107 CFATTACH_DECL(sm_obio, sizeof(struct sm_obio_softc), sm_obio_match,
 108     sm_obio_attach, NULL, NULL);
 109
 110 extern struct bus_space  smobio8_bs_tag;
 111
 112 #ifndef SM_OBIO_INTR_PARANOIA
 113 # define smintr smc91cxx_intr
 114 #else
 115 # define smintr smc_obio_intr
 116
 117 static int
 118 smc_obio_intr(void *arg)
 119 {
 120         while (smc91cxx_intr(arg))
 121                 ;
 122         return 1;
 123 }
 124 #endif /* SM_OBIO_INTR_PARANOIA */
 125
 126 int
 127 sm_obio_match(device_t parent, cfdata_t match, void *aux)
 128 {
 129         struct obio_attach_args *oba = aux;
 130         bus_space_tag_t iot = &smobio8_bs_tag;
 131         bus_space_handle_t ioh;
 132         u_int16_t tmp;
 133         int rv = 0;
 134         extern const char *smc91cxx_idstrs[];
 135
 136
 137         /* Map i/o space. */
 138         if (bus_space_map(iot, oba->oba_addr, SMC_IOSIZE, 0, &ioh))
 139                 return (0);
 140
 141
 142         /* Check that high byte of BANK_SELECT is what we expect. */
 143         tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
 144         if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
 145                 goto out;
 146
 147         /*
 148          * Switch to bank 0 and perform the test again.
 149          * XXX INVASIVE!
 150          */
 151         bus_space_write_1(iot, ioh, BANK_SELECT_REG_W, 0);
 152         tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
 153         if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
 154                 goto out;
 155
 156         /*
 157          * Check for a recognized chip id.
 158          * XXX INVASIVE!
 159          */
 160         bus_space_write_1(iot, ioh, BANK_SELECT_REG_W, 3);
 161         tmp = bus_space_read_2(iot, ioh, REVISION_REG_W);
 162         if (smc91cxx_idstrs[RR_ID(tmp)] == NULL)
 163                 goto out;
 164
 165         /*
 166          * Assume we have an SMC91Cxx.
 167          */
 168
 169         rv = 1;
 170
 171  out:
 172         bus_space_unmap(iot, ioh, SMC_IOSIZE);
 173         if (!rv) {
 174                 printf("on-board SMC probe failed\n");
 175         }
 176         return (rv);
 177 }
 178
 179 void
 180 sm_obio_attach(device_t parent, device_t self, void *aux)
 181 {
 182         struct sm_obio_softc *isc = (struct sm_obio_softc *)self;
 183         struct smc91cxx_softc *sc = &isc->sc_smc;
 184         struct obio_attach_args *oba = aux;
 185         bus_space_handle_t ioh;
 186 #ifdef LUBBOCK_SMC91C96_16BIT
 187         bus_space_tag_t iot = &pxa2x0_a4x_bs_tag;
 188 #else
 189         bus_space_tag_t iot = &smobio8_bs_tag;
 190 #endif
 191
 192
 193         printf("\n");
 194
 195         /* Map i/o space. */
 196         if (bus_space_map(iot, oba->oba_addr, SMC_IOSIZE, 0, &ioh))
 197                 panic("sm_obio_attach: can't map i/o space");
 198
 199 #ifdef LUBBOCK_SMC91C96_16BIT
 200         /* RedBoot initializes on-board SMSC91C96 in 8-bit mode.
 201            we take it back to 16-bit by clearing ECSR.IOIs8 */
 202         {
 203                 int tmp;
 204
 205                 bus_space_write_1(&smobio8_bs_tag, ioh, BANK_SELECT_REG_W, 4);
 206                 tmp = bus_space_read_1(&smobio8_bs_tag, ioh, ECSR_REG_B);
 207                 bus_space_write_1(&smobio8_bs_tag, ioh,
 208                     ECSR_REG_B, tmp & ~ECSR_IOIS8);
 209         }
 210
 211         obio16_write(LUBBOCK_MISCWR,
 212             obio16_read(LUBBOCK_MISCWR) & ~MISCWR_ENETEN16 );
 213
 214 #else
 215         /* Force 8bit mode */
 216         obio16_write(LUBBOCK_MISCWR,
 217             obio16_read(LUBBOCK_MISCWR) | MISCWR_ENETEN16);
 218
 219 #endif /* LUBBOCK_SMC91C96_16BIT */
 220
 221         sc->sc_bst = iot;
 222         sc->sc_bsh = ioh;
 223
 224         /* should always be enabled */
 225         sc->sc_flags |= SMC_FLAGS_ENABLED;
 226
 227         /* Perform generic intialization. */
 228         smc91cxx_attach(sc, NULL);
 229
 230         /* Establish the interrupt handler. */
 231         isc->sc_ih = obio_intr_establish(device_private(parent),
 232                                          oba->oba_intr, IPL_NET, smintr, sc);
 233
 234         if (isc->sc_ih == NULL)
 235                 aprint_normal_dev(self, "couldn't establish interrupt handler\n");
 236 }