The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ex/if_ex_pccard.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2000 Mitsuru IWASAKI
    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  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD: head/sys/dev/ex/if_ex_pccard.c 326255 2017-11-27 14:52:40Z pfg $");
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/kernel.h>
   36 #include <sys/socket.h>
   37 
   38 #include <sys/module.h>
   39 #include <sys/bus.h>
   40 
   41 #include <machine/bus.h>
   42 #include <machine/resource.h>
   43 #include <sys/rman.h>
   44 
   45 #include <net/if.h>
   46 #include <net/if_arp.h>
   47 #include <net/if_media.h> 
   48 
   49 #include <dev/ex/if_exreg.h>
   50 #include <dev/ex/if_exvar.h>
   51 
   52 #include <dev/pccard/pccardvar.h>
   53 #include <dev/pccard/pccard_cis.h>
   54 #include "pccarddevs.h"
   55 
   56 static const struct pccard_product ex_pccard_products[] = {
   57         PCMCIA_CARD(OLICOM, OC2220),
   58         PCMCIA_CARD(OLICOM, OC2231),
   59         PCMCIA_CARD(OLICOM, OC2232),
   60         PCMCIA_CARD(INTEL, ETHEREXPPRO),
   61         { NULL }
   62 };
   63 
   64 /* Bus Front End Functions */
   65 static int      ex_pccard_probe(device_t);
   66 static int      ex_pccard_attach(device_t);
   67 
   68 static int
   69 ex_pccard_enet_ok(u_char *enaddr)
   70 {
   71         int                     i;
   72         u_char                  sum;
   73 
   74         if (enaddr[0] == 0xff)
   75                 return (0);
   76         for (i = 0, sum = 0; i < ETHER_ADDR_LEN; i++)
   77                 sum |= enaddr[i];
   78         return (sum != 0);
   79 }
   80 
   81 static int
   82 ex_pccard_silicom_cb(const struct pccard_tuple *tuple, void *arg)
   83 {
   84         u_char *enaddr = arg;
   85         int i;
   86 
   87         if (tuple->code != CISTPL_FUNCE)
   88                 return (0);
   89         if (tuple->length != 15)
   90                 return (0);
   91         if (pccard_tuple_read_1(tuple, 6) != 6)
   92                 return (0);
   93         for (i = 0; i < 6; i++)
   94                 enaddr[i] = pccard_tuple_read_1(tuple, 7 + i);
   95         return (1);
   96 }
   97 
   98 static void
   99 ex_pccard_get_silicom_mac(device_t dev, u_char *ether_addr)
  100 {
  101         pccard_cis_scan(dev, ex_pccard_silicom_cb, ether_addr);
  102 }
  103 
  104 static int
  105 ex_pccard_probe(device_t dev)
  106 {
  107         const struct pccard_product *pp;
  108         int error, i, j;
  109         uint32_t        fcn = PCCARD_FUNCTION_UNSPEC;
  110 
  111         if ((pp = pccard_product_lookup(dev, ex_pccard_products,
  112             sizeof(ex_pccard_products[0]), NULL)) == NULL)
  113                 return (EIO);
  114         if (pp->pp_name != NULL)
  115                 device_set_desc(dev, pp->pp_name);
  116         /*
  117          * Olicom 22.8k and 33.6k modems need to activate the right
  118          * CFE.  The odd formula below replicates the sequence of cfes
  119          * that have multiple resources:
  120          *       9, 11, 13, 15,         0 + 9
  121          *      25, 27, 29, 31,         16 + 9
  122          *      41, 43, 45, 47,         32 + 9
  123          *      57, 59, 61, 63          48 + 9
  124          * (entries 8, 24, 40 and 56 are single resoruce cfes)
  125          * Fortunately the code that enables and disables the multiple
  126          * fuctions of the card won't mess with the lower bit for cards
  127          * that aren't stanards conforming MFC cards (which these olicom
  128          * cards aren't).
  129          *
  130          * Note: These cards still don't get interrupts for reasons
  131          * unknown, even when the right cfe is selected.  There's likely
  132          * something in the CCR that needs to be manually tweaked, but
  133          * the COR bits seem to all be used.  Bit 0 and 3 are always set
  134          * and the other bits select the config to use.  Maybe one of those
  135          * two bits needs to be cleared, or there's something else in the
  136          * CCR that needs tweaking.  The pattern of resources suggests
  137          * bit 0 turns on the ethernet, however...
  138          */
  139         if (pp->pp_vendor == PCMCIA_VENDOR_OLICOM &&
  140             (pp->pp_product == PCMCIA_PRODUCT_OLICOM_OC2231 ||
  141             pp->pp_product == PCMCIA_PRODUCT_OLICOM_OC2232)) {
  142                 if (pccard_select_cfe(dev, 1) == 0)
  143                         goto good;
  144                 for (i = 0; i < 4; i++) {
  145                         for (j = 0; j < 4; j++) {
  146                                 printf("Trying %d %d\n", i, j);
  147                                 if (pccard_select_cfe(dev,
  148                                     (i << 4) + (j << 1) + 9) == 0)
  149                                         goto good;
  150                         }
  151                 }
  152                 /* Can't activate the net entries, punt */
  153                 return (EIO);
  154         }
  155         /*
  156          * All other cards supported by this driver don't need specail
  157          * treatment, so just filter based on the type of card.  The
  158          * special treatment ones are setup to 'fail safe' to a modem so
  159          * this check would effectively filter them out as well.
  160          */
  161         error = pccard_get_function(dev, &fcn);
  162         if (error != 0)
  163                 return (error);
  164         if (fcn != PCCARD_FUNCTION_NETWORK)
  165                 return (EIO);
  166 good:;
  167         return (0);
  168 }
  169 
  170 static int
  171 ex_pccard_attach(device_t dev)
  172 {
  173         struct ex_softc *       sc = device_get_softc(dev);
  174         int                     error = 0;
  175         u_char                  ether_addr[ETHER_ADDR_LEN];
  176 
  177         sc->dev = dev;
  178         sc->ioport_rid = 0;
  179         sc->irq_rid = 0;
  180 
  181         if ((error = ex_alloc_resources(dev)) != 0) {
  182                 device_printf(dev, "ex_alloc_resources() failed!\n");
  183                 goto bad;
  184         }
  185 
  186         /*
  187          * Fill in several fields of the softc structure:
  188          *      - Hardware Ethernet address.
  189          *      - IRQ number.
  190          */
  191         sc->irq_no = rman_get_start(sc->irq);
  192 
  193         /* Try to get the ethernet address from the chip, then the CIS */
  194         ex_get_address(sc, ether_addr);
  195         if (!ex_pccard_enet_ok(ether_addr))
  196                 pccard_get_ether(dev, ether_addr);
  197         if (!ex_pccard_enet_ok(ether_addr))
  198                 ex_pccard_get_silicom_mac(dev, ether_addr);
  199         if (!ex_pccard_enet_ok(ether_addr)) {
  200                 device_printf(dev, "No NIC address found.\n");
  201                 error = ENXIO;
  202                 goto bad;
  203         }
  204         bcopy(ether_addr, sc->enaddr, ETHER_ADDR_LEN);
  205 
  206         if ((error = ex_attach(dev)) != 0) {
  207                 device_printf(dev, "ex_attach() failed!\n");
  208                 goto bad;
  209         }
  210 
  211         return(0);
  212 bad:
  213         ex_release_resources(dev);
  214         return (error);
  215 }
  216 static device_method_t ex_pccard_methods[] = {
  217         /* Device interface */
  218         DEVMETHOD(device_probe,         ex_pccard_probe),
  219         DEVMETHOD(device_attach,        ex_pccard_attach),
  220         DEVMETHOD(device_detach,        ex_detach),
  221 
  222         { 0, 0 }
  223 };
  224 
  225 static driver_t ex_pccard_driver = {
  226         "ex",
  227         ex_pccard_methods,
  228         sizeof(struct ex_softc),
  229 };
  230 
  231 DRIVER_MODULE(ex, pccard, ex_pccard_driver, ex_devclass, 0, 0);
  232 MODULE_DEPEND(ex, pccard, 1, 1, 1);
  233 PCCARD_PNP_INFO(ex_pccard_products);

Cache object: 2397d45a455b3d4d702fe4890c8fa6b7


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