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  * Copyright (c) 2000 Mitsuru IWASAKI
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: stable/11/sys/dev/ex/if_ex_pccard.c 331722 2018-03-29 02:50:57Z eadler $");
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/kernel.h>
   34 #include <sys/socket.h>
   35 
   36 #include <sys/module.h>
   37 #include <sys/bus.h>
   38 
   39 #include <machine/bus.h>
   40 #include <machine/resource.h>
   41 #include <sys/rman.h>
   42 
   43 #include <net/if.h>
   44 #include <net/if_arp.h>
   45 #include <net/if_media.h> 
   46 
   47 #include <dev/ex/if_exreg.h>
   48 #include <dev/ex/if_exvar.h>
   49 
   50 #include <dev/pccard/pccardvar.h>
   51 #include <dev/pccard/pccard_cis.h>
   52 #include "pccarddevs.h"
   53 
   54 static const struct pccard_product ex_pccard_products[] = {
   55         PCMCIA_CARD(OLICOM, OC2220),
   56         PCMCIA_CARD(OLICOM, OC2231),
   57         PCMCIA_CARD(OLICOM, OC2232),
   58         PCMCIA_CARD(INTEL, ETHEREXPPRO),
   59         { NULL }
   60 };
   61 
   62 /* Bus Front End Functions */
   63 static int      ex_pccard_probe(device_t);
   64 static int      ex_pccard_attach(device_t);
   65 
   66 static int
   67 ex_pccard_enet_ok(u_char *enaddr)
   68 {
   69         int                     i;
   70         u_char                  sum;
   71 
   72         if (enaddr[0] == 0xff)
   73                 return (0);
   74         for (i = 0, sum = 0; i < ETHER_ADDR_LEN; i++)
   75                 sum |= enaddr[i];
   76         return (sum != 0);
   77 }
   78 
   79 static int
   80 ex_pccard_silicom_cb(const struct pccard_tuple *tuple, void *arg)
   81 {
   82         u_char *enaddr = arg;
   83         int i;
   84 
   85         if (tuple->code != CISTPL_FUNCE)
   86                 return (0);
   87         if (tuple->length != 15)
   88                 return (0);
   89         if (pccard_tuple_read_1(tuple, 6) != 6)
   90                 return (0);
   91         for (i = 0; i < 6; i++)
   92                 enaddr[i] = pccard_tuple_read_1(tuple, 7 + i);
   93         return (1);
   94 }
   95 
   96 static void
   97 ex_pccard_get_silicom_mac(device_t dev, u_char *ether_addr)
   98 {
   99         pccard_cis_scan(dev, ex_pccard_silicom_cb, ether_addr);
  100 }
  101 
  102 static int
  103 ex_pccard_probe(device_t dev)
  104 {
  105         const struct pccard_product *pp;
  106         int error, i, j;
  107         uint32_t        fcn = PCCARD_FUNCTION_UNSPEC;
  108 
  109         if ((pp = pccard_product_lookup(dev, ex_pccard_products,
  110             sizeof(ex_pccard_products[0]), NULL)) == NULL)
  111                 return (EIO);
  112         if (pp->pp_name != NULL)
  113                 device_set_desc(dev, pp->pp_name);
  114         /*
  115          * Olicom 22.8k and 33.6k modems need to activate the right
  116          * CFE.  The odd formula below replicates the sequence of cfes
  117          * that have multiple resources:
  118          *       9, 11, 13, 15,         0 + 9
  119          *      25, 27, 29, 31,         16 + 9
  120          *      41, 43, 45, 47,         32 + 9
  121          *      57, 59, 61, 63          48 + 9
  122          * (entries 8, 24, 40 and 56 are single resoruce cfes)
  123          * Fortunately the code that enables and disables the multiple
  124          * fuctions of the card won't mess with the lower bit for cards
  125          * that aren't stanards conforming MFC cards (which these olicom
  126          * cards aren't).
  127          *
  128          * Note: These cards still don't get interrupts for reasons
  129          * unknown, even when the right cfe is selected.  There's likely
  130          * something in the CCR that needs to be manually tweaked, but
  131          * the COR bits seem to all be used.  Bit 0 and 3 are always set
  132          * and the other bits select the config to use.  Maybe one of those
  133          * two bits needs to be cleared, or there's something else in the
  134          * CCR that needs tweaking.  The pattern of resources suggests
  135          * bit 0 turns on the ethernet, however...
  136          */
  137         if (pp->pp_vendor == PCMCIA_VENDOR_OLICOM &&
  138             (pp->pp_product == PCMCIA_PRODUCT_OLICOM_OC2231 ||
  139             pp->pp_product == PCMCIA_PRODUCT_OLICOM_OC2232)) {
  140                 if (pccard_select_cfe(dev, 1) == 0)
  141                         goto good;
  142                 for (i = 0; i < 4; i++) {
  143                         for (j = 0; j < 4; j++) {
  144                                 printf("Trying %d %d\n", i, j);
  145                                 if (pccard_select_cfe(dev,
  146                                     (i << 4) + (j << 1) + 9) == 0)
  147                                         goto good;
  148                         }
  149                 }
  150                 /* Can't activate the net entries, punt */
  151                 return (EIO);
  152         }
  153         /*
  154          * All other cards supported by this driver don't need specail
  155          * treatment, so just filter based on the type of card.  The
  156          * special treatment ones are setup to 'fail safe' to a modem so
  157          * this check would effectively filter them out as well.
  158          */
  159         error = pccard_get_function(dev, &fcn);
  160         if (error != 0)
  161                 return (error);
  162         if (fcn != PCCARD_FUNCTION_NETWORK)
  163                 return (EIO);
  164 good:;
  165         return (0);
  166 }
  167 
  168 static int
  169 ex_pccard_attach(device_t dev)
  170 {
  171         struct ex_softc *       sc = device_get_softc(dev);
  172         int                     error = 0;
  173         u_char                  ether_addr[ETHER_ADDR_LEN];
  174 
  175         sc->dev = dev;
  176         sc->ioport_rid = 0;
  177         sc->irq_rid = 0;
  178 
  179         if ((error = ex_alloc_resources(dev)) != 0) {
  180                 device_printf(dev, "ex_alloc_resources() failed!\n");
  181                 goto bad;
  182         }
  183 
  184         /*
  185          * Fill in several fields of the softc structure:
  186          *      - Hardware Ethernet address.
  187          *      - IRQ number.
  188          */
  189         sc->irq_no = rman_get_start(sc->irq);
  190 
  191         /* Try to get the ethernet address from the chip, then the CIS */
  192         ex_get_address(sc, ether_addr);
  193         if (!ex_pccard_enet_ok(ether_addr))
  194                 pccard_get_ether(dev, ether_addr);
  195         if (!ex_pccard_enet_ok(ether_addr))
  196                 ex_pccard_get_silicom_mac(dev, ether_addr);
  197         if (!ex_pccard_enet_ok(ether_addr)) {
  198                 device_printf(dev, "No NIC address found.\n");
  199                 error = ENXIO;
  200                 goto bad;
  201         }
  202         bcopy(ether_addr, sc->enaddr, ETHER_ADDR_LEN);
  203 
  204         if ((error = ex_attach(dev)) != 0) {
  205                 device_printf(dev, "ex_attach() failed!\n");
  206                 goto bad;
  207         }
  208 
  209         return(0);
  210 bad:
  211         ex_release_resources(dev);
  212         return (error);
  213 }
  214 static device_method_t ex_pccard_methods[] = {
  215         /* Device interface */
  216         DEVMETHOD(device_probe,         ex_pccard_probe),
  217         DEVMETHOD(device_attach,        ex_pccard_attach),
  218         DEVMETHOD(device_detach,        ex_detach),
  219 
  220         { 0, 0 }
  221 };
  222 
  223 static driver_t ex_pccard_driver = {
  224         "ex",
  225         ex_pccard_methods,
  226         sizeof(struct ex_softc),
  227 };
  228 
  229 DRIVER_MODULE(ex, pccard, ex_pccard_driver, ex_devclass, 0, 0);
  230 MODULE_DEPEND(ex, pccard, 1, 1, 1);
  231 PCCARD_PNP_INFO(ex_pccard_products);

Cache object: 5a005a86436c1876f9ecc35dad1c40d8


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