FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/if_ath_pci.c

     /*      $NetBSD: if_ath_pci.c,v 1.5.2.1 2004/07/02 22:28:31 he Exp $    */
     
     /*-
      * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
      * All rights reserved.
      *
      * 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,
     *    without modification.
     * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
     *    redistribution must be conditioned upon including a substantially
     *    similar Disclaimer requirement for further binary redistribution.
     * 3. Neither the names of the above-listed copyright holders nor the names
     *    of any contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * Alternatively, this software may be distributed under the terms of the
     * GNU General Public License ("GPL") version 2 as published by the Free
     * Software Foundation.
     *
     * NO WARRANTY
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
     * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
     * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
     */
    
    #include <sys/cdefs.h>
    #ifdef __FreeBSD__
    __FBSDID("$FreeBSD: src/sys/dev/ath/if_ath_pci.c,v 1.6 2003/11/28 05:28:27 imp Exp $");
    #endif
    #ifdef __NetBSD__
    __KERNEL_RCSID(0, "$NetBSD: if_ath_pci.c,v 1.5.2.1 2004/07/02 22:28:31 he Exp $");
    #endif
    
    /*
     * PCI/Cardbus front-end for the Atheros Wireless LAN controller driver.
     */
    
    #include "opt_inet.h"
    
    #include <sys/param.h>
    #include <sys/systm.h> 
    #include <sys/mbuf.h>   
    #include <sys/malloc.h>
    #include <sys/kernel.h>
    #include <sys/lock.h>
    #include <sys/socket.h>
    #include <sys/sockio.h>
    #include <sys/errno.h>
    
    #include <machine/bus.h>
     
    #include <net/if.h>
    #include <net/if_dl.h>
    #include <net/if_media.h>
    #include <net/if_ether.h>
    #include <net/if_llc.h>
    #include <net/if_arp.h>
    
    #include <net80211/ieee80211_compat.h>
    #include <net80211/ieee80211_var.h>
    
    #ifdef INET
    #include <netinet/in.h> 
    #endif
    
    #include <dev/ic/athcompat.h>
    #include <dev/ic/athvar.h>
    #include <../contrib/sys/dev/ic/athhal.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcidevs.h>
    
    #include <sys/device.h>
    
    /*
     * PCI glue.
     */
    
    struct ath_pci_softc {
            struct ath_softc        sc_sc;
    #ifdef __FreeBSD__
            struct resource         *sc_sr;         /* memory resource */
            struct resource         *sc_irq;        /* irq resource */
    #else
            pci_chipset_tag_t       sc_pc;
   #endif
           void                    *sc_ih;         /* intererupt handler */
           u_int8_t                sc_saved_intline;
           u_int8_t                sc_saved_cachelinesz;
           u_int8_t                sc_saved_lattimer;
   };
   
   #define BS_BAR  0x10
   
   static int ath_pci_match(struct device *, struct cfdata *, void *);
   static void ath_pci_attach(struct device *, struct device *, void *);
   static void ath_pci_shutdown(void *);
   static int ath_pci_detach(struct device *, int);
   
   CFATTACH_DECL(ath_pci,
       sizeof(struct ath_pci_softc),
       ath_pci_match,
       ath_pci_attach,
       ath_pci_detach,
       NULL);
   
   /*
    * translate some product code.  it is a workaround until HAL gets updated.
    */
   static u_int16_t
   ath_product(pcireg_t pa_id)
   {
           u_int16_t prodid;
   
           prodid = PCI_PRODUCT(pa_id);
           switch (prodid) {
           case 0x1014:    /* IBM 31P9702 minipci a/b/g card */
                   prodid = PCI_PRODUCT_ATHEROS_AR5212;
                   break;
           default:
                   break;
           }
           return prodid;
   }
   
   static int
   ath_pci_match(struct device *parent, struct cfdata *match, void *aux)
   {
           const char* devname;
           struct pci_attach_args *pa = aux;
           pci_vendor_id_t vendor;
   
           vendor = PCI_VENDOR(pa->pa_id);
           /* XXX HACK until HAL is updated. */
           if (vendor == 0x128c)
                   vendor = PCI_VENDOR_ATHEROS;
           devname = ath_hal_probe(vendor, ath_product(pa->pa_id));
           if (devname) 
                   return 1;
   
           return 0;
   }
   
   static void
   ath_pci_attach(struct device *parent, struct device *self, void *aux)
   {
           struct ath_pci_softc *psc = (struct ath_pci_softc *)self;
           struct ath_softc *sc = &psc->sc_sc;
           u_int32_t res;
           struct pci_attach_args *pa = aux;
           pci_chipset_tag_t pc = pa->pa_pc;
           bus_space_tag_t iot;
           bus_space_handle_t ioh;
           pci_intr_handle_t ih;
           void *hook;
           const char *intrstr = NULL;
   
           psc->sc_pc = pc;
   
           pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
               pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
                   PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE);
           res = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
   
           if ((res & PCI_COMMAND_MEM_ENABLE) == 0) {
                   aprint_error("couldn't enable memory mapping\n");
                   goto bad;
           }
   
           if ((res & PCI_COMMAND_MASTER_ENABLE) == 0) {
                   aprint_error("couldn't enable bus mastering\n");
                   goto bad;
           }
   
           if (pci_mapreg_map(pa, BS_BAR, PCI_MAPREG_TYPE_MEM, 0, &iot, &ioh, 
               NULL, NULL)) {
                   aprint_error("cannot map register space\n");
                   goto bad;
           }
           sc->sc_st = iot;
           sc->sc_sh = ioh;
   
           sc->sc_invalid = 1;
   
           if (pci_intr_map(pa, &ih)) {
                   aprint_error("couldn't map interrupt\n");
                   goto bad1;
           }
   
           intrstr = pci_intr_string(pc, ih); 
           psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ath_intr, sc);
           if (psc->sc_ih == NULL) {
                   aprint_error("couldn't map interrupt\n");
                   goto bad2;
           }
   
           printf("\n");
           printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
   
           sc->sc_dmat = pa->pa_dmat;
   
           hook = shutdownhook_establish(ath_pci_shutdown, psc);
           if (hook == NULL) {
                   aprint_error("couldn't make shutdown hook\n");
                   goto bad3;
           }
   
           if (ath_attach(ath_product(pa->pa_id), sc) == 0)
                   return;
   
           shutdownhook_disestablish(hook);
   
   bad3:   pci_intr_disestablish(pc, psc->sc_ih);
   bad2:   /* XXX */
   bad1:   /* XXX */
   bad:
           return;
   }
   
   static int
   ath_pci_detach(struct device *self, int flags)
   {
           struct ath_pci_softc *psc = (struct ath_pci_softc *)self;
   
           ath_detach(&psc->sc_sc);
           pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
   
           return (0);
   }
   
   static void
   ath_pci_shutdown(void *self)
   {
           struct ath_pci_softc *psc = (struct ath_pci_softc *)self;
   
           ath_shutdown(&psc->sc_sc);
   }

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