FreeBSD/Linux Kernel Cross Reference
sys/dev/pcmcia/if_awi_pcmcia.c

     /* $NetBSD: if_awi_pcmcia.c,v 1.28 2003/10/22 09:13:17 mjl Exp $ */
     
     /*-
      * Copyright (c) 1999 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Bill Sommerfeld
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *        This product includes software developed by the NetBSD
     *        Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    /*
     * PCMCIA attachment for BayStack 650 802.11FH PCMCIA card,
     * based on the AMD 79c930 802.11 controller chip.
     *
     * This attachment can probably be trivially adapted for other FH and
     * DS cards based on the same chipset.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: if_awi_pcmcia.c,v 1.28 2003/10/22 09:13:17 mjl Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/socket.h>
    #include <sys/ioctl.h>
    #include <sys/errno.h>
    #include <sys/syslog.h>
    #include <sys/select.h>
    #include <sys/device.h>
    
    #include <net/if.h>
    #include <net/if_dl.h>
    #include <net/if_ether.h>
    #include <net/if_media.h>
    
    #include <net80211/ieee80211_var.h>
    #include <net80211/ieee80211_compat.h>
    
    #include <machine/cpu.h>
    #include <machine/bus.h>
    #include <machine/intr.h>
    
    #include <dev/ic/am79c930reg.h>
    #include <dev/ic/am79c930var.h>
    #include <dev/ic/awireg.h>
    #include <dev/ic/awivar.h>
    
    #include <dev/pcmcia/pcmciareg.h>
    #include <dev/pcmcia/pcmciavar.h>
    #include <dev/pcmcia/pcmciadevs.h>
    
    static int awi_pcmcia_match(struct device *, struct cfdata *, void *);
    static void awi_pcmcia_attach(struct device *, struct device *, void *);
    static int awi_pcmcia_detach(struct device *, int);
    static int awi_pcmcia_enable(struct awi_softc *);
    static void awi_pcmcia_disable(struct awi_softc *);
    
    struct awi_pcmcia_softc {
            struct awi_softc sc_awi;                /* real "awi" softc */
    
            /* PCMCIA-specific goo */
            struct pcmcia_io_handle sc_pcioh;       /* PCMCIA i/o space info */
            struct pcmcia_mem_handle sc_memh;       /* PCMCIA memory space info */
            int sc_io_window;                       /* our i/o window */
            int sc_mem_window;                      /* our memory window */
            struct pcmcia_function *sc_pf;          /* our PCMCIA function */
            void *sc_ih;                            /* interrupt handler */
    };
    
    static int      awi_pcmcia_find __P((struct awi_pcmcia_softc *,
       struct pcmcia_attach_args *, struct pcmcia_config_entry *));
   
   CFATTACH_DECL(awi_pcmcia, sizeof(struct awi_pcmcia_softc),
       awi_pcmcia_match, awi_pcmcia_attach, awi_pcmcia_detach, awi_activate);
   
   static const struct awi_pcmcia_product {
           u_int32_t       app_vendor;     /* vendor ID */
           u_int32_t       app_product;    /* product ID */
           const char      *app_cisinfo[4]; /* CIS information */
           const char      *app_name;      /* product name */
   } awi_pcmcia_products[] = {
           { PCMCIA_VENDOR_BAY,            PCMCIA_PRODUCT_BAY_STACK_650,
             PCMCIA_CIS_BAY_STACK_650,     PCMCIA_STR_BAY_STACK_650 },
   
           { PCMCIA_VENDOR_BAY,            PCMCIA_PRODUCT_BAY_STACK_660,
             PCMCIA_CIS_BAY_STACK_660,     PCMCIA_STR_BAY_STACK_660 },
   
           { PCMCIA_VENDOR_BAY,            PCMCIA_PRODUCT_BAY_SURFER_PRO,
             PCMCIA_CIS_BAY_SURFER_PRO,    PCMCIA_STR_BAY_SURFER_PRO },
   
           { PCMCIA_VENDOR_AMD,            PCMCIA_PRODUCT_AMD_AM79C930,
             PCMCIA_CIS_AMD_AM79C930,      PCMCIA_STR_AMD_AM79C930 },
   
           { PCMCIA_VENDOR_ICOM,           PCMCIA_PRODUCT_ICOM_SL200,
             PCMCIA_CIS_ICOM_SL200,        PCMCIA_STR_ICOM_SL200 },
   
           { PCMCIA_VENDOR_NOKIA,          PCMCIA_PRODUCT_NOKIA_C020_WLAN,
             PCMCIA_CIS_NOKIA_C020_WLAN,   PCMCIA_STR_NOKIA_C020_WLAN },
   
           { PCMCIA_VENDOR_FARALLON,       PCMCIA_PRODUCT_FARALLON_SKYLINE,
             PCMCIA_CIS_FARALLON_SKYLINE,  PCMCIA_STR_FARALLON_SKYLINE },
   
           { 0,                            0,
             { NULL, NULL, NULL, NULL },   NULL },
   };
   
   static const struct awi_pcmcia_product *
           awi_pcmcia_lookup __P((struct pcmcia_attach_args *));
   
   static const struct awi_pcmcia_product *
   awi_pcmcia_lookup(pa)
           struct pcmcia_attach_args *pa;
   {
           const struct awi_pcmcia_product *app;
   
           for (app = awi_pcmcia_products; app->app_name != NULL; app++) {
                   /* match by vendor/product id */
                   if (pa->manufacturer != PCMCIA_VENDOR_INVALID &&
                       pa->manufacturer == app->app_vendor &&
                       pa->product != PCMCIA_PRODUCT_INVALID &&
                       pa->product == app->app_product)
                           return (app);
   
                   /* match by CIS information */
                   if (pa->card->cis1_info[0] != NULL &&
                       app->app_cisinfo[0] != NULL &&
                       strcmp(pa->card->cis1_info[0], app->app_cisinfo[0]) == 0 &&
                       pa->card->cis1_info[1] != NULL &&
                       app->app_cisinfo[1] != NULL &&
                       strcmp(pa->card->cis1_info[1], app->app_cisinfo[1]) == 0)
                           return (app);
           }
   
           return (NULL);
   }
   
   static int
   awi_pcmcia_enable(sc)
           struct awi_softc *sc;
   {
           struct awi_pcmcia_softc *psc = (struct awi_pcmcia_softc *)sc;
           struct pcmcia_function *pf = psc->sc_pf;
   
           /* establish the interrupt. */
           psc->sc_ih = pcmcia_intr_establish(pf, IPL_NET, awi_intr, sc);
           if (psc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt\n",
                       sc->sc_dev.dv_xname);
                   return (1);
           }
   
           if (pcmcia_function_enable(pf)) {
                   pcmcia_intr_disestablish(pf, psc->sc_ih);
                   return (1);
           }
           DELAY(1000);
   
           return (0);
   }
   
   static void
   awi_pcmcia_disable(sc)
           struct awi_softc *sc;
   {
           struct awi_pcmcia_softc *psc = (struct awi_pcmcia_softc *)sc;
           struct pcmcia_function *pf = psc->sc_pf;
   
           pcmcia_function_disable(pf);
           pcmcia_intr_disestablish(pf, psc->sc_ih);
   }
   
   static int
   awi_pcmcia_match(parent, match, aux)
           struct device *parent;
           struct cfdata *match;
           void *aux;
   {
           struct pcmcia_attach_args *pa = aux;
   
           if (awi_pcmcia_lookup(pa) != NULL)
                   return (1);
   
           return (0);
   }
   
   static int
   awi_pcmcia_find(psc, pa, cfe)
           struct awi_pcmcia_softc *psc;
           struct pcmcia_attach_args *pa;
           struct pcmcia_config_entry *cfe;
   {
           struct awi_softc *sc = &psc->sc_awi;
           int fail = 0;
   
           /*
            * see if we can read the firmware version sanely
            * through the i/o ports.
            * if not, try a different CIS string..
            */
           if (pcmcia_io_alloc(psc->sc_pf, cfe->iospace[0].start,
               cfe->iospace[0].length, AM79C930_IO_ALIGN,
               &psc->sc_pcioh) != 0)
                   goto fail;
   
           if (pcmcia_io_map(psc->sc_pf, PCMCIA_WIDTH_AUTO, 0, psc->sc_pcioh.size,
               &psc->sc_pcioh, &psc->sc_io_window))
                   goto fail_io_free;
   
           /* Enable the card. */
           pcmcia_function_init(psc->sc_pf, cfe);
           if (pcmcia_function_enable(psc->sc_pf))
                   goto fail_io_unmap;
   
           sc->sc_chip.sc_bustype = AM79C930_BUS_PCMCIA;
           sc->sc_chip.sc_iot = psc->sc_pcioh.iot;
           sc->sc_chip.sc_ioh = psc->sc_pcioh.ioh;
           am79c930_chip_init(&sc->sc_chip, 0);
   
           DELAY(1000);
   
           awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN);
   
           if (memcmp(sc->sc_banner, "PCnetMobile:", 12) == 0)
                   return (0);
   
           fail++;
           pcmcia_function_disable(psc->sc_pf);
   
    fail_io_unmap:
           fail++;
           pcmcia_io_unmap(psc->sc_pf, psc->sc_io_window);
   
    fail_io_free:
           fail++;
           pcmcia_io_free(psc->sc_pf, &psc->sc_pcioh);
    fail:
           fail++;
           psc->sc_io_window = -1;
           return (fail);
   }
   
   static void
   awi_pcmcia_attach(parent, self, aux)
           struct device  *parent, *self;
           void           *aux;
   {
           struct awi_pcmcia_softc *psc = (void *)self;
           struct awi_softc *sc = &psc->sc_awi;
           const struct awi_pcmcia_product *app;
           struct pcmcia_attach_args *pa = aux;
           struct pcmcia_config_entry *cfe;
           bus_size_t memoff;
   
           app = awi_pcmcia_lookup(pa);
           if (app == NULL)
                   panic("awi_pcmcia_attach: impossible");
   
           psc->sc_pf = pa->pf;
   
           SIMPLEQ_FOREACH(cfe, &pa->pf->cfe_head, cfe_list) {
                   if (cfe->iftype != PCMCIA_IFTYPE_IO)
                           continue;
                   if (cfe->num_iospace < 1)
                           continue;
                   if (cfe->iospace[0].length < AM79C930_IO_SIZE)
                           continue;
   
                   if (awi_pcmcia_find(psc, pa, cfe) == 0)
                           break;
           }
           if (cfe == NULL) {
                   printf(": no suitable CIS info found\n");
                   goto no_config_entry;
           }
   
           sc->sc_enabled = 1;
           printf(": %s\n", app->app_name);
   
           psc->sc_mem_window = -1;
           if (pcmcia_mem_alloc(psc->sc_pf, AM79C930_MEM_SIZE,
               &psc->sc_memh) != 0) {
                   printf("%s: unable to allocate memory space; using i/o only\n",
                       sc->sc_dev.dv_xname);
           } else if (pcmcia_mem_map(psc->sc_pf,
               PCMCIA_WIDTH_MEM8|PCMCIA_MEM_COMMON, AM79C930_MEM_BASE,
               AM79C930_MEM_SIZE, &psc->sc_memh, &memoff, &psc->sc_mem_window)) {
                   printf("%s: unable to map memory space; using i/o only\n",
                       sc->sc_dev.dv_xname);
                   pcmcia_mem_free(psc->sc_pf, &psc->sc_memh);
           } else {
                   sc->sc_chip.sc_memt = psc->sc_memh.memt;
                   sc->sc_chip.sc_memh = psc->sc_memh.memh;
                   am79c930_chip_init(&sc->sc_chip, 1);
           }
   
           sc->sc_enable = awi_pcmcia_enable;
           sc->sc_disable = awi_pcmcia_disable;
   
           /* establish the interrupt. */
           psc->sc_ih = pcmcia_intr_establish(psc->sc_pf, IPL_NET, awi_intr, sc);
           if (psc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt\n",
                       sc->sc_dev.dv_xname);
                   goto no_interrupt;
           }
           sc->sc_cansleep = 1;
   
           if (awi_attach(sc) != 0) {
                   printf("%s: failed to attach controller\n",
                       sc->sc_dev.dv_xname);
                   goto attach_failed;
           }
   
           sc->sc_enabled = 0;
           /* disable device and disestablish the interrupt */
           awi_pcmcia_disable(sc);
           return;
   
    attach_failed:
           pcmcia_intr_disestablish(psc->sc_pf, psc->sc_ih);
   
    no_interrupt:
           /* Unmap our memory window and space */
           if (psc->sc_mem_window != -1) {
                   pcmcia_mem_unmap(psc->sc_pf, psc->sc_mem_window);
                   pcmcia_mem_free(psc->sc_pf, &psc->sc_memh);
           }
   
           /* Unmap our i/o window and space */
           pcmcia_io_unmap(psc->sc_pf, psc->sc_io_window);
           pcmcia_io_free(psc->sc_pf, &psc->sc_pcioh);
   
           /* Disable the function */
           pcmcia_function_disable(psc->sc_pf);
   
    no_config_entry:
           psc->sc_io_window = -1;
   }
   
   
   static int
   awi_pcmcia_detach(self, flags)
           struct device *self;
           int flags;
   {
           struct awi_pcmcia_softc *psc = (struct awi_pcmcia_softc *)self;
           int error;
   
           if (psc->sc_io_window == -1)
                   /* Nothing to detach. */
                   return (0);
   
           error = awi_detach(&psc->sc_awi);
           if (error != 0)
                   return (error);
   
           /* Unmap our memory window and free memory space */
           if (psc->sc_mem_window != -1) {
                   pcmcia_mem_unmap(psc->sc_pf, psc->sc_mem_window);
                   pcmcia_mem_free(psc->sc_pf, &psc->sc_memh);
           }
   
           /* Unmap our i/o window. */
           pcmcia_io_unmap(psc->sc_pf, psc->sc_io_window);
   
           /* Free our i/o space. */
           pcmcia_io_free(psc->sc_pf, &psc->sc_pcioh);
           return (0);
   }

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