The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/xe/if_xe_pccard.c

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    1 /*-
    2  * Copyright (c) 2002 Takeshi Shibagaki
    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 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 /* xe pccard interface driver */
   31 
   32 #include <sys/param.h>
   33 #include <sys/bus.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 #include <sys/socket.h>
   37 #include <sys/systm.h>
   38 
   39 #include <machine/bus.h>
   40 #include <machine/resource.h>
   41 #include <sys/rman.h>
   42  
   43 #include <net/ethernet.h>
   44 #include <net/if.h> 
   45 #include <net/if_arp.h>
   46 #include <net/if_media.h>
   47 #include <net/if_mib.h>
   48 
   49 
   50 #include <dev/xe/if_xereg.h>
   51 #include <dev/xe/if_xevar.h>
   52 
   53 #include <dev/pccard/pccardvar.h>
   54 #include <dev/pccard/pccard_cis.h>
   55 
   56 #include "card_if.h"
   57 #include "pccarddevs.h"
   58 
   59 /*
   60  * Debug logging levels - set with hw.xe.debug sysctl
   61  * 0 = None
   62  * 1 = More hardware details, probe/attach progress
   63  * 2 = Most function calls, ioctls and media selection progress
   64  * 3 = Everything - interrupts, packets in/out and multicast address setup
   65  */
   66 #define XE_DEBUG
   67 #ifdef XE_DEBUG
   68 
   69 extern int xe_debug;
   70 
   71 #define DEVPRINTF(level, arg) if (xe_debug >= (level)) device_printf arg
   72 #define DPRINTF(level, arg) if (xe_debug >= (level)) printf arg
   73 #else
   74 #define DEVPRINTF(level, arg)
   75 #define DPRINTF(level, arg)
   76 #endif
   77 
   78 
   79 #define XE_CARD_TYPE_FLAGS_NO 0x0
   80 #define XE_CARD_TYPE_FLAGS_CE2 0x1
   81 #define XE_CARD_TYPE_FLAGS_MOHAWK 0x2
   82 #define XE_CARD_TYPE_FLAGS_DINGO 0x4
   83 #define XE_PROD_ETHER_MASK 0x0100
   84 #define XE_PROD_MODEM_MASK 0x1000
   85 
   86 #define XE_BOGUS_MAC_OFFSET 0x90
   87 
   88 /* MAC vendor prefix used by most Xircom cards is 00:80:c7 */
   89 #define XE_MAC_ADDR_0 0x00
   90 #define XE_MAC_ADDR_1 0x80
   91 #define XE_MAC_ADDR_2 0xc7
   92 
   93 /* Some (all?) REM56 cards have vendor prefix 00:10:a4 */
   94 #define XE_REM56_MAC_ADDR_0 0x00
   95 #define XE_REM56_MAC_ADDR_1 0x10
   96 #define XE_REM56_MAC_ADDR_2 0xa4
   97 
   98 
   99 struct xe_pccard_product {
  100         struct pccard_product product;
  101         u_int16_t prodext;
  102         u_int16_t flags;
  103 };
  104 
  105 static const struct xe_pccard_product xe_pccard_products[] = {
  106         { PCMCIA_CARD_D(ACCTON, EN2226, 0),      0x43, XE_CARD_TYPE_FLAGS_MOHAWK },
  107         { PCMCIA_CARD_D(COMPAQ2, CPQ_10_100, 0), 0x43, XE_CARD_TYPE_FLAGS_MOHAWK },
  108         { PCMCIA_CARD_D(INTEL, EEPRO100, 0),     0x43, XE_CARD_TYPE_FLAGS_MOHAWK },
  109         { PCMCIA_CARD_D(INTEL, PRO100LAN56, 0),  0x46, XE_CARD_TYPE_FLAGS_DINGO },
  110         { PCMCIA_CARD_D(XIRCOM, CE, 0),          0x41, XE_CARD_TYPE_FLAGS_NO },
  111         { PCMCIA_CARD_D(XIRCOM, CE2, 0),         0x41, XE_CARD_TYPE_FLAGS_CE2 },
  112         { PCMCIA_CARD_D(XIRCOM, CE2, 0),         0x42, XE_CARD_TYPE_FLAGS_CE2 },
  113         { PCMCIA_CARD_D(XIRCOM, CE2_2, 0),       0x41, XE_CARD_TYPE_FLAGS_CE2 },
  114         { PCMCIA_CARD_D(XIRCOM, CE2_2, 0),       0x42, XE_CARD_TYPE_FLAGS_CE2 },
  115         { PCMCIA_CARD_D(XIRCOM, CE3, 0),         0x43, XE_CARD_TYPE_FLAGS_MOHAWK },
  116         { PCMCIA_CARD_D(XIRCOM, CEM, 0),         0x41, XE_CARD_TYPE_FLAGS_NO },
  117         { PCMCIA_CARD_D(XIRCOM, CEM2, 0),        0x42, XE_CARD_TYPE_FLAGS_CE2 },
  118         { PCMCIA_CARD_D(XIRCOM, CEM28, 0),       0x43, XE_CARD_TYPE_FLAGS_CE2 },
  119         { PCMCIA_CARD_D(XIRCOM, CEM33, 0),       0x44, XE_CARD_TYPE_FLAGS_CE2 },
  120         { PCMCIA_CARD_D(XIRCOM, CEM33_2, 0),     0x44, XE_CARD_TYPE_FLAGS_CE2 },
  121         { PCMCIA_CARD_D(XIRCOM, CEM56, 0),       0x45, XE_CARD_TYPE_FLAGS_DINGO },
  122         { PCMCIA_CARD_D(XIRCOM, CEM56_2, 0),     0x46, XE_CARD_TYPE_FLAGS_DINGO },
  123         { PCMCIA_CARD_D(XIRCOM, REM56, 0),       0x46, XE_CARD_TYPE_FLAGS_DINGO },
  124         { PCMCIA_CARD_D(XIRCOM, REM10, 0),       0x47, XE_CARD_TYPE_FLAGS_DINGO },
  125         { PCMCIA_CARD_D(XIRCOM, XEM5600, 0),     0x56, XE_CARD_TYPE_FLAGS_DINGO },
  126         { { NULL }, 0, 0 }      
  127 };
  128 
  129 
  130 /*
  131  * Fixing for CEM2, CEM3 and CEM56/REM56 cards.  These need some magic to
  132  * enable the Ethernet function, which isn't mentioned anywhere in the CIS.
  133  * Despite the register names, most of this isn't Dingo-specific.
  134  */
  135 static int
  136 xe_cemfix(device_t dev)
  137 {
  138         struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev);
  139         bus_space_tag_t bst;
  140         bus_space_handle_t bsh;
  141         struct resource *r;
  142         int rid;
  143         int ioport;
  144 
  145         DEVPRINTF(2, (dev, "cemfix\n"));
  146 
  147         DEVPRINTF(1, (dev, "CEM I/O port 0x%0lx, size 0x%0lx\n",
  148                 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
  149                 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)));
  150 
  151         rid = 0;
  152         r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0,
  153                                ~0, 4 << 10, RF_ACTIVE);
  154         if (!r) {
  155                 device_printf(dev, "cemfix: Can't map in attribute memory\n");
  156                 return (-1);
  157         }
  158 
  159         bsh = rman_get_bushandle(r);
  160         bst = rman_get_bustag(r);
  161 
  162         CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid,
  163                            PCCARD_A_MEM_ATTR);
  164 
  165         bus_space_write_1(bst, bsh, DINGO_ECOR, DINGO_ECOR_IRQ_LEVEL |
  166                                                 DINGO_ECOR_INT_ENABLE |
  167                                                 DINGO_ECOR_IOB_ENABLE |
  168                                                 DINGO_ECOR_ETH_ENABLE);
  169         ioport = bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid);
  170         bus_space_write_1(bst, bsh, DINGO_EBAR0, ioport & 0xff);
  171         bus_space_write_1(bst, bsh, DINGO_EBAR1, (ioport >> 8) & 0xff);
  172 
  173         if (sc->dingo) {
  174                 bus_space_write_1(bst, bsh, DINGO_DCOR0, DINGO_DCOR0_SF_INT);
  175                 bus_space_write_1(bst, bsh, DINGO_DCOR1, DINGO_DCOR1_INT_LEVEL |
  176                                                   DINGO_DCOR1_EEDIO);
  177                 bus_space_write_1(bst, bsh, DINGO_DCOR2, 0x00);
  178                 bus_space_write_1(bst, bsh, DINGO_DCOR3, 0x00);
  179                 bus_space_write_1(bst, bsh, DINGO_DCOR4, 0x00);
  180         }
  181 
  182         bus_release_resource(dev, SYS_RES_MEMORY, rid, r);
  183 
  184         /* success! */
  185         return (0);
  186 }
  187 
  188 /*
  189  * Fixing for CE2-class cards with bogus CIS entry for MAC address.  This
  190  * should be in a type 0x22 tuple, but some cards seem to use 0x89.
  191  * This function looks for a sensible MAC address tuple starting at the given
  192  * offset in attribute memory, ignoring the tuple type field.
  193  */
  194 static int
  195 xe_macfix(device_t dev, int offset)
  196 {
  197         struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev);
  198         bus_space_tag_t bst;
  199         bus_space_handle_t bsh;
  200         struct resource *r;
  201         int rid, i;
  202         u_int8_t cisdata[9];
  203         u_int8_t required[6] = { 0x08, PCCARD_TPLFE_TYPE_LAN_NID, ETHER_ADDR_LEN,
  204                                  XE_MAC_ADDR_0, XE_MAC_ADDR_1, XE_MAC_ADDR_2 };
  205 
  206         DEVPRINTF(2, (dev, "macfix\n"));
  207 
  208         rid = 0;
  209         r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0,
  210                                ~0, 4 << 10, RF_ACTIVE);
  211         if (!r) {
  212                 device_printf(dev, "macfix: Can't map in attribute memory\n");
  213                 return (-1);
  214         }
  215 
  216         bsh = rman_get_bushandle(r);
  217         bst = rman_get_bustag(r);
  218 
  219         CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid,
  220                            PCCARD_A_MEM_ATTR);
  221 
  222         /*
  223          * Looking for (relative to offset):
  224          *
  225          *  0x00        0x??    Tuple type (ignored)
  226          *  0x02        0x08    Tuple length (must be 8)
  227          *  0x04        0x04    Address type? (must be 4)
  228          *  0x06        0x06    Address length (must be 6)
  229          *  0x08        0x00    Manufacturer ID, byte 1
  230          *  0x0a        0x80    Manufacturer ID, byte 2
  231          *  0x0c        0xc7    Manufacturer ID, byte 3
  232          *  0x0e        0x??    Card ID, byte 1
  233          *  0x10        0x??    Card ID, byte 2
  234          *  0x12        0x??    Card ID, byte 3
  235          */
  236         for (i = 0; i < 9; i++) {
  237                 cisdata[i] = bus_space_read_1(bst, bsh, offset + (2 * i) + 2);
  238                 if (i < 6 && required[i] != cisdata[i]) {
  239                         device_printf(dev, "macfix: Can't find valid MAC address\n");
  240                         bus_release_resource(dev, SYS_RES_MEMORY, rid, r);
  241                         return (-1);
  242                 }
  243         }
  244         
  245         for (i = 0; i < ETHER_ADDR_LEN; i++) {
  246                 sc->arpcom.ac_enaddr[i] = cisdata[i + 3];
  247         }
  248             
  249         bus_release_resource(dev, SYS_RES_MEMORY, rid, r);
  250 
  251         /* success! */
  252         return (0);
  253 }
  254 
  255 /*
  256  * PCMCIA probe routine.
  257  * Identify the device.  Called from the bus driver when the card is
  258  * inserted or otherwise powers up.
  259  */
  260 static int
  261 xe_pccard_probe(device_t dev)
  262 {
  263         struct xe_softc *scp = (struct xe_softc *) device_get_softc(dev);
  264         u_int32_t vendor,product;
  265         u_int16_t prodext;
  266         const char* vendor_str = NULL;
  267         const char* product_str = NULL;
  268         const char* cis4_str = NULL;
  269         const char *cis3_str=NULL;
  270         const struct xe_pccard_product *xpp;
  271 
  272         DEVPRINTF(2, (dev, "pccard_probe\n"));
  273 
  274         pccard_get_vendor(dev, &vendor);
  275         pccard_get_product(dev, &product);
  276         pccard_get_prodext(dev, &prodext);
  277         pccard_get_vendor_str(dev, &vendor_str);
  278         pccard_get_product_str(dev, &product_str);
  279         pccard_get_cis3_str(dev, &cis3_str);
  280         pccard_get_cis4_str(dev, &cis4_str);
  281 
  282         DEVPRINTF(1, (dev, "vendor = 0x%04x\n", vendor));
  283         DEVPRINTF(1, (dev, "product = 0x%04x\n", product));
  284         DEVPRINTF(1, (dev, "prodext = 0x%02x\n", prodext));
  285         DEVPRINTF(1, (dev, "vendor_str = %s\n", vendor_str));
  286         DEVPRINTF(1, (dev, "product_str = %s\n", product_str));
  287         DEVPRINTF(1, (dev, "cis3_str = %s\n", cis3_str));
  288         DEVPRINTF(1, (dev, "cis4_str = %s\n", cis4_str));
  289 
  290 
  291         /*
  292          * Possibly already did this search in xe_pccard_match(),
  293          * but we need to do it here anyway to figure out which
  294          * card we have.
  295          */
  296         for (xpp = xe_pccard_products; xpp->product.pp_vendor != 0; xpp++) {
  297                 if (vendor == xpp->product.pp_vendor &&
  298                     product == xpp->product.pp_product &&
  299                     prodext == xpp->prodext)
  300                         break;
  301         }
  302 
  303         /* Found a match? */
  304         if (xpp->product.pp_vendor == 0)
  305                 return (ENODEV);
  306 
  307 
  308         /* Set card name for logging later */
  309         if (xpp->product.pp_name != NULL)
  310                 device_set_desc(dev, xpp->product.pp_name);
  311 
  312         /* Reject known but unsupported cards */
  313         if (xpp->flags & XE_CARD_TYPE_FLAGS_NO) {
  314                 device_printf(dev, "Sorry, your %s %s card is not supported :(\n",
  315                                 vendor_str, product_str);
  316                 return (ENODEV);
  317         }
  318 
  319         /* Set various card ID fields in softc */
  320         scp->vendor = vendor_str;
  321         scp->card_type = product_str;
  322         if (xpp->flags & XE_CARD_TYPE_FLAGS_CE2)
  323                 scp->ce2 = 1;
  324         if (xpp->flags & XE_CARD_TYPE_FLAGS_MOHAWK)
  325                 scp->mohawk = 1;
  326         if (xpp->flags & XE_CARD_TYPE_FLAGS_DINGO) {
  327                 scp->dingo = 1;
  328                 scp->mohawk = 1;
  329         }
  330         if (xpp->product.pp_product & XE_PROD_MODEM_MASK)
  331                 scp->modem = 1;
  332 
  333         /* Get MAC address */
  334         pccard_get_ether(dev, scp->arpcom.ac_enaddr);
  335 
  336         /* Deal with bogus MAC address */
  337         if (xpp->product.pp_vendor == PCMCIA_VENDOR_XIRCOM
  338             && scp->ce2
  339             && (scp->arpcom.ac_enaddr[0] != XE_MAC_ADDR_0
  340                 || scp->arpcom.ac_enaddr[1] != XE_MAC_ADDR_1
  341                 || scp->arpcom.ac_enaddr[2] != XE_MAC_ADDR_2)
  342             && xe_macfix(dev, XE_BOGUS_MAC_OFFSET) < 0) {
  343                 device_printf(dev,
  344                               "Unable to find MAC address for your %s card\n",
  345                               scp->card_type);
  346                 return (ENODEV);            
  347         }
  348 
  349         /* Success */
  350         return (0);
  351 }
  352 
  353 /*
  354  * Attach a device.
  355  */
  356 static int
  357 xe_pccard_attach(device_t dev)
  358 {
  359         struct xe_softc *scp = device_get_softc(dev);
  360         int err;
  361 
  362         DEVPRINTF(2, (dev, "pccard_attach\n"));
  363 
  364         if ((err = xe_activate(dev)) != 0)
  365                 return (err);
  366          
  367         /* Hack RealPorts into submission */
  368         if (scp->modem && xe_cemfix(dev) < 0) {
  369                 device_printf(dev, "Unable to fix your %s %s combo card\n",
  370                                           scp->vendor, scp->card_type);
  371                 xe_deactivate(dev);
  372                 return (ENODEV);
  373         }
  374         if ((err = xe_attach(dev))) {
  375                 device_printf(dev, "xe_attach() failed! (%d)\n", err);
  376                 return (err);
  377         }
  378         return (0);
  379 }
  380 
  381 /*
  382  * The device entry is being removed, probably because someone ejected the
  383  * card.  The interface should have been brought down manually before calling
  384  * this function; if not you may well lose packets.  In any case, I shut down
  385  * the card and the interface, and hope for the best.
  386  */
  387 static int
  388 xe_pccard_detach(device_t dev)
  389 {
  390         struct xe_softc *sc = device_get_softc(dev);
  391 
  392         DEVPRINTF(2, (dev, "pccard_detach\n"));
  393 
  394         sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING;
  395         ether_ifdetach(&sc->arpcom.ac_if);
  396         xe_deactivate(dev);
  397         return (0);
  398 }
  399 
  400 static int
  401 xe_pccard_product_match(device_t dev, const struct pccard_product* ent, int vpfmatch)
  402 {
  403         const struct xe_pccard_product* xpp;
  404         u_int16_t prodext;
  405 
  406         DEVPRINTF(2, (dev, "pccard_product_match\n"));
  407 
  408         xpp = (const struct xe_pccard_product*)ent;
  409         pccard_get_prodext(dev, &prodext);
  410 
  411         if (xpp->prodext != prodext)
  412                 vpfmatch = 0;
  413         else
  414                 vpfmatch++;
  415 
  416         return (vpfmatch);
  417 }
  418 
  419 static int
  420 xe_pccard_match(device_t dev)
  421 {
  422         int             error = 0;
  423         u_int32_t       fcn = PCCARD_FUNCTION_UNSPEC;
  424         const struct pccard_product *pp;
  425 
  426         DEVPRINTF(2, (dev, "pccard_match\n"));
  427 
  428         /* Make sure we're a network driver */
  429         error = pccard_get_function(dev, &fcn);
  430         if (error != 0)
  431                 return (error);
  432         if (fcn != PCCARD_FUNCTION_NETWORK)
  433                 return (ENXIO);
  434 
  435         /* If we match something in the table, it is our device. */
  436         pp = (const struct pccard_product *)xe_pccard_products;
  437         if ((pp = pccard_product_lookup(dev, pp,
  438              sizeof(xe_pccard_products[0]), xe_pccard_product_match)) != NULL)
  439                 return (0);
  440 
  441         return (EIO);
  442 }
  443 
  444 static device_method_t xe_pccard_methods[] = {
  445         /* Device interface */
  446         DEVMETHOD(device_probe,         pccard_compat_probe),
  447         DEVMETHOD(device_attach,        pccard_compat_attach),
  448         DEVMETHOD(device_detach,        xe_pccard_detach),
  449 
  450         /* Card interface */
  451         DEVMETHOD(card_compat_match,    xe_pccard_match),
  452         DEVMETHOD(card_compat_probe,    xe_pccard_probe),
  453         DEVMETHOD(card_compat_attach,   xe_pccard_attach),
  454 
  455         { 0, 0 }
  456 };
  457 
  458 static driver_t xe_pccard_driver = {
  459         "xe",
  460         xe_pccard_methods,
  461         sizeof(struct xe_softc),
  462 };
  463 
  464 devclass_t xe_devclass;
  465 
  466 DRIVER_MODULE(xe, pccard, xe_pccard_driver, xe_devclass, 0, 0);

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