sys/dev/mca/if_ep_mca.c

   1 /*      $NetBSD: if_ep_mca.c,v 1.21 2008/08/27 05:33:47 christos 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 Jaromir Dolecek.
   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  * Copyright (c) 1997 Jonathan Stone <jonathan@NetBSD.org>
  34  * Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
  35  * All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. All advertising materials mentioning features or use of this software
  46  *    must display the following acknowledgement:
  47  *      This product includes software developed by Herb Peyerl.
  48  * 4. The name of Herb Peyerl may not be used to endorse or promote products
  49  *    derived from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  52  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  53  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  54  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  55  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  56  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  60  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  */
  62
  63 /*
  64  * Driver for 3Com 3c529 cards.
  65  *
  66  * If you encouter sucky performance, try kernel without DEBUG/DIAGNOSTIC.
  67  * This helped on my test machine to change the performance of the card
  68  * from like 5KB/s to like 800 KB/s.
  69  */
  70
  71 #include <sys/cdefs.h>
  72 __KERNEL_RCSID(0, "$NetBSD: if_ep_mca.c,v 1.21 2008/08/27 05:33:47 christos Exp $");
  73
  74 #include <sys/param.h>
  75 #include <sys/systm.h>
  76 #include <sys/mbuf.h>
  77 #include <sys/socket.h>
  78 #include <sys/ioctl.h>
  79 #include <sys/errno.h>
  80 #include <sys/device.h>
  81
  82 #include <net/if.h>
  83 #include <net/if_ether.h>
  84 #include <net/if_media.h>
  85
  86 #include <sys/bus.h>
  87
  88 #include <dev/mii/miivar.h>
  89
  90 #include <dev/ic/elink3var.h>
  91 #include <dev/ic/elink3reg.h>
  92
  93 #include <dev/mca/mcavar.h>
  94 #include <dev/mca/mcadevs.h>
  95
  96 /*
  97  * MCA constants.
  98  */
  99 #define MCA_CBIO                0x200   /* Configuration Base IO Address */
 100 #define MCA_IOSZ                0x10    /* I/O space size */
 101
 102 int ep_mca_match(device_t , cfdata_t , void *);
 103 void ep_mca_attach(device_t , device_t , void *);
 104
 105 CFATTACH_DECL_NEW(ep_mca, sizeof(struct ep_softc),
 106     ep_mca_match, ep_mca_attach, NULL, NULL);
 107
 108 const struct ep_mca_product {
 109         u_int32_t       epp_prodid;     /* MCA product ID */
 110         const char      *epp_name;      /* device name */
 111 } ep_mca_products[] = {
 112         { MCA_PRODUCT_3C529,    "3C529 Ethernet Adapter" },
 113         { MCA_PRODUCT_3C529_TP, "3c529-TP Ethernet Adapter" },
 114         { MCA_PRODUCT_3C529_TM, "3c529 Ethernet Adapter (test mode)" },
 115         { MCA_PRODUCT_3C529_2T, "3c529 Ethernet Adapter (10base2/T)" },
 116         { MCA_PRODUCT_3C529_T,  "3c529 Ethernet Adapter (10baseT)"   },
 117
 118         { 0,                    NULL },
 119 };
 120
 121 static const struct ep_mca_product *ep_mca_lookup
 122    (const struct mca_attach_args *);
 123
 124 static const struct ep_mca_product *
 125 ep_mca_lookup(const struct mca_attach_args *ma)
 126 {
 127         const struct ep_mca_product *epp;
 128
 129         for (epp = ep_mca_products; epp->epp_name != NULL; epp++)
 130                 if (ma->ma_id == epp->epp_prodid)
 131                         return (epp);
 132
 133         return (NULL);
 134 }
 135
 136 int
 137 ep_mca_match(device_t parent, cfdata_t match, void *aux)
 138 {
 139         struct mca_attach_args *ma = (struct mca_attach_args *) aux;
 140
 141         if (ep_mca_lookup(ma) != NULL)
 142                 return (1);
 143
 144         return (0);
 145 }
 146
 147 void
 148 ep_mca_attach(device_t parent, device_t self, void *aux)
 149 {
 150         struct ep_softc *sc = device_private(self);
 151         struct mca_attach_args *ma = aux;
 152         bus_space_handle_t ioh;
 153         int pos4, pos5, iobase, irq, media;
 154         const struct ep_mca_product *epp;
 155
 156         pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
 157         pos5 = mca_conf_read(ma->ma_mc, ma->ma_slot, 5);
 158
 159         /*
 160          * POS register 2: (adf pos0)
 161          * 7 6 5 4 3 2 1 0
 162          *               \__ enable: 0=adapter disabled, 1=adapter enabled
 163          *
 164          * POS register 3: (adf pos1)
 165          *
 166          * 7 6 5 4 3 2 1 0
 167          * \________/
 168          *          \_______ Boot ROM Address Range: 0=disabled
 169          *                     X=0xc2000-0xc3fff + (x * 0x2000)
 170          *
 171          * POS register 4: (adf pos2)
 172          *
 173          * 7 6 5 4 3 2 1 0
 174          * \________/  \_/
 175          *          \    \__ Transceiver Type: 00=on-board (RJ45), 01=ext(AUI)
 176          *           \______ I/O Address Range: 0x200-0x20f + ((x>>2) * 0x400)
 177          *
 178          * POS register 5: (adf pos3)
 179          *
 180          * 7 6 5 4 3 2 1 0
 181          *          \____/
 182          *               \__ Interrupt level
 183          */
 184
 185         iobase = MCA_CBIO + (((pos4 & 0xfc) >> 2) * 0x400);
 186         irq = (pos5 & 0x0f);
 187
 188         sc->sc_dev = self;
 189         /* map the pio registers */
 190         if (bus_space_map(ma->ma_iot, iobase, MCA_IOSZ, 0, &ioh)) {
 191                 aprint_error_dev(sc->sc_dev, "unable to map i/o space\n");
 192                 return;
 193         }
 194
 195         sc->sc_iot = ma->ma_iot;
 196         sc->sc_ioh = ioh;
 197
 198         epp = ep_mca_lookup(ma);
 199         if (epp == NULL) {
 200                 printf("\n");
 201                 panic("ep_mca_attach: impossible");
 202         }
 203
 204         printf(" slot %d irq %d: 3Com %s\n", ma->ma_slot + 1,
 205                 irq, epp->epp_name);
 206
 207         sc->enable = NULL;
 208         sc->disable = NULL;
 209         sc->enabled = 1;
 210
 211         sc->bustype = ELINK_BUS_MCA;
 212         sc->ep_flags = 0;
 213
 214         if (epconfig(sc, ELINK_CHIPSET_3C509, NULL))
 215                 return;
 216
 217         /* Map and establish the interrupt. */
 218         sc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, epintr, sc);
 219         if (sc->sc_ih == NULL) {
 220                 aprint_error_dev(sc->sc_dev, "couldn't establish interrupt handler\n");
 221                 return;
 222         }
 223
 224         /*
 225          * Set default media to be same as the one selected in POS.
 226          */
 227         switch (pos4 & 0x03) {
 228         case 0x00:
 229                 /* on-board RJ-45 */
 230                 media = IFM_10_T;
 231                 break;
 232         case 0x01:
 233                 /* external AUI */
 234                 media = IFM_10_5;
 235                 break;
 236         case 0x02:
 237                 /* undefined, should never be set */
 238                 media = IFM_NONE;
 239                 break;
 240         case 0x03:
 241                 /* BNC */
 242                 media = IFM_10_2;
 243                 break;
 244         default:
 245                 aprint_error_dev(sc->sc_dev, " cannot determine media\n");
 246                 return;
 247         }
 248         ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|media);
 249 }