if_ex_cardbus.c

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    1 /*      $NetBSD: if_ex_cardbus.c,v 1.28.2.1 2004/07/23 22:10:25 he Exp $        */
    2 
    3 /*
    4  * CardBus specific routines for 3Com 3C575-family CardBus ethernet adapter
    5  *
    6  * Copyright (c) 1998 and 1999
    7  *       HAYAKAWA Koichi.  All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed by the author.
   20  * 4. Neither the name of the author nor the names of any co-contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY HAYAKAWA KOICHI ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL TAKESHI OHASHI OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  *
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: if_ex_cardbus.c,v 1.28.2.1 2004/07/23 22:10:25 he Exp $");
   41 
   42 /* #define EX_DEBUG 4 */        /* define to report information for debugging */
   43 
   44 #include <sys/param.h>
   45 #include <sys/systm.h>
   46 #include <sys/mbuf.h>
   47 #include <sys/socket.h>
   48 #include <sys/ioctl.h>
   49 #include <sys/errno.h>
   50 #include <sys/syslog.h>
   51 #include <sys/select.h> 
   52 #include <sys/device.h>
   53 
   54 #include <net/if.h>
   55 #include <net/if_dl.h>
   56 #include <net/if_ether.h>
   57 #include <net/if_media.h>
   58 
   59 #include <machine/cpu.h>
   60 #include <machine/bus.h>
   61 
   62 #include <dev/cardbus/cardbusvar.h>
   63 #include <dev/cardbus/cardbusdevs.h>
   64 
   65 #include <dev/mii/miivar.h>
   66 
   67 #include <dev/ic/elink3var.h>
   68 #include <dev/ic/elink3reg.h>
   69 #include <dev/ic/elinkxlreg.h>
   70 #include <dev/ic/elinkxlvar.h>
   71 
   72 #if defined DEBUG && !defined EX_DEBUG
   73 #define EX_DEBUG
   74 #endif
   75 
   76 #if defined EX_DEBUG
   77 #define DPRINTF(a) printf a
   78 #else
   79 #define DPRINTF(a)
   80 #endif
   81 
   82 #define CARDBUS_3C575BTX_FUNCSTAT_PCIREG  CARDBUS_BASE2_REG  /* means 0x18 */
   83 #define EX_CB_INTR 4            /* intr acknowledge reg. CardBus only */
   84 #define EX_CB_INTR_ACK 0x8000 /* intr acknowledge bit */
   85 
   86 int ex_cardbus_match __P((struct device *, struct cfdata *, void *));
   87 void ex_cardbus_attach __P((struct device *, struct device *,void *));
   88 int ex_cardbus_detach __P((struct device *, int));
   89 void ex_cardbus_intr_ack __P((struct ex_softc *));
   90 
   91 int ex_cardbus_enable __P((struct ex_softc *));
   92 void ex_cardbus_disable __P((struct ex_softc *));
   93 void ex_cardbus_power __P((struct ex_softc *, int));
   94 
   95 struct ex_cardbus_softc {
   96         struct ex_softc sc_softc;
   97 
   98         cardbus_devfunc_t sc_ct;
   99         int sc_intrline;
  100         u_int8_t sc_cardbus_flags;
  101 #define EX_REATTACH             0x01
  102 #define EX_ABSENT               0x02
  103         u_int8_t sc_cardtype;
  104 #define EX_CB_BOOMERANG         1
  105 #define EX_CB_CYCLONE           2
  106 
  107         /* CardBus function status space.  575B requests it. */
  108         bus_space_tag_t sc_funct;
  109         bus_space_handle_t sc_funch;
  110         bus_size_t sc_funcsize;
  111 
  112         bus_size_t sc_mapsize;          /* the size of mapped bus space region */
  113         
  114         cardbustag_t sc_tag;
  115 
  116         int     sc_csr;                 /* CSR bits */
  117         int     sc_bar_reg;             /* which BAR to use */
  118         pcireg_t sc_bar_val;            /* value of the BAR */
  119         int     sc_bar_reg1;            /* which BAR to use */
  120         pcireg_t sc_bar_val1;           /* value of the BAR */
  121         
  122 };
  123 
  124 CFATTACH_DECL(ex_cardbus, sizeof(struct ex_cardbus_softc),
  125     ex_cardbus_match, ex_cardbus_attach, ex_cardbus_detach, ex_activate);
  126 
  127 const struct ex_cardbus_product {
  128         u_int32_t       ecp_prodid;     /* CardBus product ID */
  129         int             ecp_flags;      /* initial softc flags */
  130         pcireg_t        ecp_csr;        /* PCI CSR flags */
  131         int             ecp_cardtype;   /* card type */
  132         const char      *ecp_name;      /* device name */
  133 } ex_cardbus_products[] = {
  134         { CARDBUS_PRODUCT_3COM_3C575TX,
  135           EX_CONF_MII | EX_CONF_EEPROM_OFF | EX_CONF_EEPROM_8BIT,
  136           CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MASTER_ENABLE,
  137           EX_CB_BOOMERANG,
  138           "3c575-TX Ethernet" },
  139 
  140         { CARDBUS_PRODUCT_3COM_3C575BTX,
  141           EX_CONF_90XB|EX_CONF_MII|EX_CONF_INV_LED_POLARITY |
  142             EX_CONF_EEPROM_OFF | EX_CONF_EEPROM_8BIT,
  143           CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE |
  144               CARDBUS_COMMAND_MASTER_ENABLE,
  145           EX_CB_CYCLONE,
  146           "3c575B-TX Ethernet" },
  147 
  148         { CARDBUS_PRODUCT_3COM_3C575CTX,
  149           EX_CONF_90XB | EX_CONF_PHY_POWER | EX_CONF_EEPROM_OFF |
  150             EX_CONF_EEPROM_8BIT,
  151           CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE |
  152               CARDBUS_COMMAND_MASTER_ENABLE,
  153           EX_CB_CYCLONE,
  154           "3c575CT Ethernet" },
  155 
  156         { CARDBUS_PRODUCT_3COM_3C656_E,
  157           EX_CONF_90XB | EX_CONF_PHY_POWER | EX_CONF_EEPROM_OFF |
  158             EX_CONF_EEPROM_8BIT | EX_CONF_INV_LED_POLARITY,
  159           CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE |
  160               CARDBUS_COMMAND_MASTER_ENABLE,
  161           EX_CB_CYCLONE,
  162           "3c656-TX Ethernet" },
  163 
  164         { CARDBUS_PRODUCT_3COM_3C656B_E,
  165           EX_CONF_90XB | EX_CONF_PHY_POWER | EX_CONF_EEPROM_OFF |
  166             EX_CONF_EEPROM_8BIT | EX_CONF_INV_LED_POLARITY,
  167           CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE |
  168               CARDBUS_COMMAND_MASTER_ENABLE,
  169           EX_CB_CYCLONE,
  170           "3c656B-TX Ethernet" },
  171 
  172         { CARDBUS_PRODUCT_3COM_3C656C_E,
  173           EX_CONF_90XB | EX_CONF_PHY_POWER | EX_CONF_EEPROM_OFF |
  174             EX_CONF_EEPROM_8BIT,
  175           CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE |
  176               CARDBUS_COMMAND_MASTER_ENABLE,
  177           EX_CB_CYCLONE,
  178           "3c656C-TX Ethernet" },
  179 
  180         { 0,
  181           0,
  182           0,
  183           0,
  184           NULL },
  185 };
  186 
  187 
  188 void ex_cardbus_setup __P((struct ex_cardbus_softc *));
  189 
  190 const struct ex_cardbus_product *ex_cardbus_lookup
  191     __P((const struct cardbus_attach_args *));
  192 
  193 const struct ex_cardbus_product *
  194 ex_cardbus_lookup(ca)
  195         const struct cardbus_attach_args *ca;
  196 {
  197         const struct ex_cardbus_product *ecp;
  198 
  199         if (CARDBUS_VENDOR(ca->ca_id) != CARDBUS_VENDOR_3COM)
  200                 return (NULL);
  201 
  202         for (ecp = ex_cardbus_products; ecp->ecp_name != NULL; ecp++)
  203                 if (CARDBUS_PRODUCT(ca->ca_id) == ecp->ecp_prodid)
  204                         return (ecp);
  205         return (NULL);
  206 }
  207 
  208 int
  209 ex_cardbus_match(parent, cf, aux)
  210         struct device *parent;
  211         struct cfdata *cf;
  212         void *aux;
  213 {
  214         struct cardbus_attach_args *ca = aux;
  215 
  216         if (ex_cardbus_lookup(ca) != NULL)
  217                 return (1);
  218 
  219         return (0);
  220 }
  221 
  222 void
  223 ex_cardbus_attach(parent, self, aux)
  224         struct device *parent;
  225         struct device *self;
  226         void *aux;
  227 {
  228         struct ex_cardbus_softc *csc = (void *)self;
  229         struct ex_softc *sc = &csc->sc_softc;
  230         struct cardbus_attach_args *ca = aux;
  231         cardbus_devfunc_t ct = ca->ca_ct;
  232 #if rbus
  233 #else
  234         cardbus_chipset_tag_t cc = ct->ct_cc;
  235 #endif
  236         const struct ex_cardbus_product *ecp;
  237         bus_addr_t adr, adr1;
  238 
  239         sc->ex_bustype = EX_BUS_CARDBUS;
  240         sc->sc_dmat = ca->ca_dmat;
  241         csc->sc_ct = ca->ca_ct;
  242         csc->sc_intrline = ca->ca_intrline;
  243         csc->sc_tag = ca->ca_tag;
  244 
  245         ecp = ex_cardbus_lookup(ca);
  246         if (ecp == NULL) {
  247                 printf("\n");
  248                 panic("ex_cardbus_attach: impossible");
  249         }
  250 
  251         printf(": 3Com %s\n", ecp->ecp_name);
  252 
  253         sc->ex_conf = ecp->ecp_flags;
  254         csc->sc_cardtype = ecp->ecp_cardtype;
  255         csc->sc_csr = ecp->ecp_csr;
  256 
  257         if (Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO, 0,
  258                 &sc->sc_iot, &sc->sc_ioh, &adr, &csc->sc_mapsize) == 0) {
  259 #if rbus
  260 #else
  261                 (*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr + csc->sc_mapsize);
  262 #endif
  263                 csc->sc_bar_reg = CARDBUS_BASE0_REG;
  264                 csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
  265 
  266                 if (csc->sc_cardtype == EX_CB_CYCLONE) {
  267                         /* Map CardBus function status window. */
  268                         if (Cardbus_mapreg_map(ct, 
  269                                 CARDBUS_3C575BTX_FUNCSTAT_PCIREG,
  270                                 CARDBUS_MAPREG_TYPE_MEM, 0,
  271                                  &csc->sc_funct, &csc->sc_funch,
  272                                  &adr1, &csc->sc_funcsize) == 0) {
  273 
  274                                 csc->sc_bar_reg1 =
  275                                         CARDBUS_3C575BTX_FUNCSTAT_PCIREG;
  276                                 csc->sc_bar_val1 =
  277                                         adr1 | CARDBUS_MAPREG_TYPE_MEM;
  278 
  279                         } else {
  280                                 printf("%s: unable to map function "
  281                                         "status window\n", self->dv_xname);
  282                                 return;
  283                         }
  284 
  285                         /* Setup interrupt acknowledge hook */
  286                         sc->intr_ack = ex_cardbus_intr_ack;
  287                 }
  288         }
  289         else {
  290                 printf(": can't map i/o space\n");
  291                 return;
  292         }
  293 
  294         /* Power management hooks. */
  295         sc->enable = ex_cardbus_enable;
  296         sc->disable = ex_cardbus_disable;
  297         sc->power = ex_cardbus_power;
  298 
  299         /*
  300          *  Handle power management nonsense and
  301          * initialize the configuration registers.
  302          */
  303         ex_cardbus_setup(csc);
  304 
  305         ex_config(sc);
  306 
  307         if (csc->sc_cardtype == EX_CB_CYCLONE)
  308                 bus_space_write_4(csc->sc_funct, csc->sc_funch,
  309                     EX_CB_INTR, EX_CB_INTR_ACK);
  310 
  311         Cardbus_function_disable(csc->sc_ct);  
  312 }
  313 
  314 void
  315 ex_cardbus_intr_ack(sc)
  316         struct ex_softc *sc;
  317 {
  318         struct ex_cardbus_softc *csc = (struct ex_cardbus_softc *)sc;
  319 
  320         bus_space_write_4(csc->sc_funct, csc->sc_funch, EX_CB_INTR,
  321             EX_CB_INTR_ACK);
  322 }
  323 
  324 int
  325 ex_cardbus_detach(self, arg)
  326         struct device *self;
  327         int arg;
  328 {
  329         struct ex_cardbus_softc *csc = (void *)self;
  330         struct ex_softc *sc = &csc->sc_softc;
  331         struct cardbus_devfunc *ct = csc->sc_ct;
  332         int rv;
  333 
  334 #if defined(DIAGNOSTIC)
  335         if (ct == NULL) {
  336                 panic("%s: data structure lacks", sc->sc_dev.dv_xname);
  337         }
  338 #endif
  339 
  340         rv = ex_detach(sc);
  341         if (rv == 0) {
  342                 /*
  343                  * Unhook the interrupt handler.
  344                  */
  345                 cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, sc->sc_ih);
  346 
  347                 if (csc->sc_cardtype == EX_CB_CYCLONE) {
  348                         Cardbus_mapreg_unmap(ct,
  349                             CARDBUS_3C575BTX_FUNCSTAT_PCIREG,
  350                             csc->sc_funct, csc->sc_funch, csc->sc_funcsize);
  351                 }
  352 
  353                 Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG, sc->sc_iot,
  354                     sc->sc_ioh, csc->sc_mapsize);
  355         }
  356         return (rv);
  357 }
  358 
  359 int
  360 ex_cardbus_enable(sc)
  361         struct ex_softc *sc;
  362 {
  363         struct ex_cardbus_softc *csc = (struct ex_cardbus_softc *)sc;
  364         cardbus_function_tag_t cf = csc->sc_ct->ct_cf;
  365         cardbus_chipset_tag_t cc = csc->sc_ct->ct_cc;
  366 
  367         Cardbus_function_enable(csc->sc_ct);
  368         ex_cardbus_setup(csc);
  369 
  370         sc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline,
  371             IPL_NET, ex_intr, sc);
  372         if (NULL == sc->sc_ih) {
  373                 printf("%s: couldn't establish interrupt\n",
  374                     sc->sc_dev.dv_xname);
  375                 return (1);
  376         }
  377         printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname,
  378                 csc->sc_intrline);
  379 
  380         return (0);
  381 }
  382 
  383 void
  384 ex_cardbus_disable(sc)
  385         struct ex_softc *sc;
  386 {
  387         struct ex_cardbus_softc *csc = (struct ex_cardbus_softc *)sc;
  388         cardbus_function_tag_t cf = csc->sc_ct->ct_cf;
  389         cardbus_chipset_tag_t cc = csc->sc_ct->ct_cc;
  390 
  391         cardbus_intr_disestablish(cc, cf, sc->sc_ih);
  392         sc->sc_ih = NULL;
  393 
  394         Cardbus_function_disable(csc->sc_ct);
  395 
  396 }
  397 
  398 void 
  399 ex_cardbus_power(sc, why)
  400         struct ex_softc *sc;
  401         int why;
  402 {
  403         struct ex_cardbus_softc *csc = (void *) sc;
  404 
  405         if (why == PWR_RESUME) {
  406                 /*
  407                  * Give the PCI configuration registers a kick
  408                  * in the head.
  409                  */
  410 #ifdef DIAGNOSTIC
  411                 if (sc->enabled == 0)
  412                         panic("ex_cardbus_power");
  413 #endif
  414                 ex_cardbus_setup(csc);
  415         }
  416 }
  417 
  418 void 
  419 ex_cardbus_setup(csc)
  420         struct ex_cardbus_softc *csc;
  421 {
  422         struct ex_softc *sc = &csc->sc_softc;
  423         cardbus_devfunc_t ct = csc->sc_ct;
  424         cardbus_chipset_tag_t cc = ct->ct_cc;
  425         cardbus_function_tag_t cf = ct->ct_cf;
  426         cardbusreg_t  reg;
  427         int pmreg;
  428 
  429         /* Get it out of power save mode if needed (BIOS bugs). */
  430         if (cardbus_get_capability(cc, cf, csc->sc_tag,
  431             PCI_CAP_PWRMGMT, &pmreg, 0)) {
  432                 reg = cardbus_conf_read(cc, cf, csc->sc_tag, pmreg + 4) & 0x03;
  433 #if 1 /* XXX Probably not right for CardBus. */
  434                 if (reg == 3) {
  435                         /*
  436                          * The card has lost all configuration data in
  437                          * this state, so punt.
  438                          */
  439                         printf("%s: unable to wake up from power state D3\n",
  440                             sc->sc_dev.dv_xname);
  441                         return;
  442                 }
  443 #endif
  444                 if (reg != 0) {
  445                         printf("%s: waking up from power state D%d\n",
  446                             sc->sc_dev.dv_xname, reg);
  447                         cardbus_conf_write(cc, cf, csc->sc_tag,
  448                             pmreg + 4, 0);
  449                 }
  450         }
  451 
  452         /* Make sure the right access type is on the CardBus bridge. */
  453         (ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_IO_ENABLE);
  454         if (csc->sc_cardtype == EX_CB_CYCLONE) {
  455                 /*
  456                  * Make sure CardBus brigde can access memory space.  Usually
  457                  * memory access is enabled by BIOS, but some BIOSes do not
  458                  * enable it.
  459                  */
  460                 (ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
  461 
  462                 /* Program the BAR */
  463                 cardbus_conf_write(cc, cf, csc->sc_tag,
  464                         csc->sc_bar_reg1, csc->sc_bar_val1); 
  465         }
  466         (ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
  467 
  468 
  469         /* Program the BAR */
  470         cardbus_conf_write(cc, cf, csc->sc_tag,
  471                 csc->sc_bar_reg, csc->sc_bar_val); 
  472 
  473         /* Enable the appropriate bits in the CARDBUS CSR. */
  474         reg = cardbus_conf_read(cc, cf, csc->sc_tag,
  475             CARDBUS_COMMAND_STATUS_REG);
  476         reg |= csc->sc_csr;
  477         cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
  478             reg);
  479   
  480         /*
  481          * set latency timer
  482          */
  483         reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG);
  484         if (CARDBUS_LATTIMER(reg) < 0x20) {
  485                 /* at least the value of latency timer should 0x20. */
  486                 DPRINTF(("if_ex_cardbus: lattimer 0x%x -> 0x20\n",
  487                     CARDBUS_LATTIMER(reg)));
  488                 reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
  489                 reg |= (0x20 << CARDBUS_LATTIMER_SHIFT);
  490                 cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg);
  491         }
  492 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/cardbus/if_ex_cardbus.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/cardbus/if_ex_cardbus.c
