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

     /*      $NetBSD: if_rtk_pci.c,v 1.20 2004/02/13 10:05:50 wiz Exp $      */
     
     /*
      * Copyright (c) 1997, 1998
      *      Bill Paul <wpaul@ctr.columbia.edu>.  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.
     * 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 Bill Paul.
     * 4. Neither the name of the author nor the names of any co-contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
     * 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.
     *
     *      FreeBSD Id: if_rl.c,v 1.17 1999/06/19 20:17:37 wpaul Exp
     */
    
    /*
     * Realtek 8129/8139 PCI NIC driver
     *
     * Supports several extremely cheap PCI 10/100 adapters based on
     * the Realtek chipset. Datasheets can be obtained from
     * www.realtek.com.tw.
     *
     * Written by Bill Paul <wpaul@ctr.columbia.edu>
     * Electrical Engineering Department
     * Columbia University, New York City
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: if_rtk_pci.c,v 1.20 2004/02/13 10:05:50 wiz Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/callout.h>
    #include <sys/device.h>
    #include <sys/sockio.h>
    #include <sys/mbuf.h>
    #include <sys/malloc.h>
    #include <sys/kernel.h>
    #include <sys/socket.h>
    
    #include <net/if.h>
    #include <net/if_arp.h>
    #include <net/if_ether.h>
    #include <net/if_dl.h>
    #include <net/if_media.h>
    
    #include <machine/bus.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcidevs.h>
    
    #include <dev/mii/mii.h>
    #include <dev/mii/miivar.h>
    
    /*
     * Default to using PIO access for this driver. On SMP systems,
     * there appear to be problems with memory mapped mode: it looks like
     * doing too many memory mapped access back to back in rapid succession
     * can hang the bus. I'm inclined to blame this on crummy design/construction
     * on the part of Realtek. Memory mapped mode does appear to work on
     * uniprocessor systems though.
     */
    #ifndef dreamcast               /* XXX */
    #define RTK_USEIOSPACE
    #endif
    
    #include <dev/ic/rtl81x9reg.h>
    #include <dev/ic/rtl81x9var.h>
    
    struct rtk_pci_softc {
            struct rtk_softc sc_rtk;        /* real rtk softc */
    
            /* PCI-specific goo.*/
            void *sc_ih;
            pci_chipset_tag_t sc_pc;        /* PCI chipset */
            pcitag_t sc_pcitag;             /* PCI tag */
    };
   
   static const struct rtk_type rtk_pci_devs[] = {
           { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129,
                   RTK_8129, "Realtek 8129 10/100BaseTX" },
           { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139,
                   RTK_8139, "Realtek 8139 10/100BaseTX" },
           { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_MPX5030,
                   RTK_8139, "Accton MPX 5030/5038 10/100BaseTX" },
           { PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139,
                   RTK_8139, "Delta Electronics 8139 10/100BaseTX" },
           { PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139,
                   RTK_8139, "Addtron Technology 8139 10/100BaseTX" },
           { PCI_VENDOR_SEGA, PCI_PRODUCT_SEGA_BROADBAND,
                   RTK_8139, "SEGA Broadband Adapter" },
           { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS,
                   RTK_8139, "D-Link Systems DFE 530TX+" },
           { 0, 0, 0, NULL }
   };
   
   const struct rtk_type *rtk_pci_lookup __P((const struct pci_attach_args *));
   
   int     rtk_pci_match __P((struct device *, struct cfdata *, void *));
   void    rtk_pci_attach __P((struct device *, struct device *, void *));
   
   CFATTACH_DECL(rtk_pci, sizeof(struct rtk_pci_softc),
       rtk_pci_match, rtk_pci_attach, NULL, NULL);
   
   const struct rtk_type *
   rtk_pci_lookup(pa)
           const struct pci_attach_args *pa;
   {
           const struct rtk_type *t;
   
           for (t = rtk_pci_devs; t->rtk_name != NULL; t++) {
                   if (PCI_VENDOR(pa->pa_id) == t->rtk_vid &&
                       PCI_PRODUCT(pa->pa_id) == t->rtk_did) {
                           return (t);
                   }
           }
           return (NULL);
   }
   
   int
   rtk_pci_match(parent, match, aux)
           struct device *parent;
           struct cfdata *match;
           void *aux;
   {
           struct pci_attach_args *pa = aux;
   
           if (rtk_pci_lookup(pa) != NULL)
                   return (1);
   
           return (0);
   }
   
   /*
    * Attach the interface. Allocate softc structures, do ifmedia
    * setup and ethernet/BPF attach.
    */
   void
   rtk_pci_attach(parent, self, aux)
           struct device *parent, *self;
           void *aux;
   {
           struct rtk_pci_softc *psc = (struct rtk_pci_softc *)self;
           struct rtk_softc *sc = &psc->sc_rtk;
           pcireg_t command;
           struct pci_attach_args *pa = aux;
           pci_chipset_tag_t pc = pa->pa_pc;
           pci_intr_handle_t ih;
           const char *intrstr = NULL;
           const struct rtk_type *t;
           int pmreg;
   
           psc->sc_pc = pa->pa_pc;
           psc->sc_pcitag = pa->pa_tag;
   
           t = rtk_pci_lookup(pa);
           if (t == NULL) {
                   printf("\n");
                   panic("rtk_pci_attach: impossible");
           }
           printf(": %s\n", t->rtk_name);
   
           /*
            * Handle power management nonsense.
            */
   
           if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) {
                   command = pci_conf_read(pc, pa->pa_tag, pmreg + 4);
                   if (command & RTK_PSTATE_MASK) {
                           pcireg_t iobase, membase, irq;
   
                           /* Save important PCI config data. */
                           iobase = pci_conf_read(pc, pa->pa_tag, RTK_PCI_LOIO);
                           membase = pci_conf_read(pc, pa->pa_tag, RTK_PCI_LOMEM);
                           irq = pci_conf_read(pc, pa->pa_tag, PCI_INTERRUPT_REG);
   
                           /* Reset the power state. */
                           printf("%s: chip is in D%d power mode "
                               "-- setting to D0\n", sc->sc_dev.dv_xname,
                               command & RTK_PSTATE_MASK);
                           command &= 0xFFFFFFFC;
                           pci_conf_write(pc, pa->pa_tag, pmreg + 4, command);
   
                           /* Restore PCI config data. */
                           pci_conf_write(pc, pa->pa_tag, RTK_PCI_LOIO, iobase);
                           pci_conf_write(pc, pa->pa_tag, RTK_PCI_LOMEM, membase);
                           pci_conf_write(pc, pa->pa_tag, PCI_INTERRUPT_REG, irq);
                   }
           }
   
           /*
            * Map control/status registers.
            */
   #ifdef RTK_USEIOSPACE
           if (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
               &sc->rtk_btag, &sc->rtk_bhandle, NULL, NULL)) {
                   printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
                   return;
           }
   #else
           if (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
               &sc->rtk_btag, &sc->rtk_bhandle, NULL, NULL)) {
                   printf("%s: can't map mem space\n", sc->sc_dev.dv_xname);
                   return;
           }
   #endif
   
           /* Allocate interrupt */
           if (pci_intr_map(pa, &ih)) {
                   printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
                   return;
           }
           intrstr = pci_intr_string(pc, ih);
           psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc);
           if (psc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt",
                       sc->sc_dev.dv_xname);
                   if (intrstr != NULL)
                           printf(" at %s", intrstr);
                   printf("\n");
                   return;
           }
   
           sc->rtk_type = t->rtk_basetype;
   
           printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
   
           sc->sc_dmat = pa->pa_dmat;
           sc->sc_flags |= RTK_ENABLED;
   
           rtk_attach(sc);
   }

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