FreeBSD/Linux Kernel Cross Reference
sys/dev/sbus/if_le_lebuffer.c

     /*      $NetBSD: if_le_lebuffer.c,v 1.19 2004/03/17 17:04:58 pk Exp $   */
     
     /*-
      * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
      * Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
     *
     * 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.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: if_le_lebuffer.c,v 1.19 2004/03/17 17:04:58 pk Exp $");
    
    #include "opt_inet.h"
    #include "bpfilter.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/syslog.h>
    #include <sys/socket.h>
    #include <sys/device.h>
    #include <sys/malloc.h>
    
    #include <net/if.h>
    #include <net/if_ether.h>
    #include <net/if_media.h>
    
    #ifdef INET
    #include <netinet/in.h>
    #include <netinet/if_inarp.h>
    #endif
    
    #include <machine/bus.h>
    #include <machine/intr.h>
    #include <machine/autoconf.h>
    
    #include <dev/sbus/sbusvar.h>
    #include <dev/sbus/lebuffervar.h>
    
    #include <dev/ic/lancereg.h>
    #include <dev/ic/lancevar.h>
    #include <dev/ic/am7990reg.h>
    #include <dev/ic/am7990var.h>
    
    /*
     * LANCE registers.
     */
    #define LEREG1_RDP      0       /* Register Data port */
    #define LEREG1_RAP      2       /* Register Address port */
    
    struct  le_softc {
            struct  am7990_softc    sc_am7990;      /* glue to MI code */
            struct  sbusdev         sc_sd;          /* sbus device */
            bus_space_tag_t         sc_bustag;
            bus_dma_tag_t           sc_dmatag;
            bus_space_handle_t      sc_reg;         /* LANCE registers */
    };
    
    
    int     lematch_lebuffer __P((struct device *, struct cfdata *, void *));
    void    leattach_lebuffer __P((struct device *, struct device *, void *));
    
    /*
     * Media types supported.
     */
    static int lemedia[] = {
            IFM_ETHER|IFM_10_T,
    };
    #define NLEMEDIA        (sizeof(lemedia) / sizeof(lemedia[0]))
   
   CFATTACH_DECL(le_lebuffer, sizeof(struct le_softc),
       lematch_lebuffer, leattach_lebuffer, NULL, NULL);
   
   extern struct cfdriver le_cd;
   
   #if defined(_KERNEL_OPT)
   #include "opt_ddb.h"
   #endif
   
   static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
   static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
   
   static void
   lewrcsr(sc, port, val)
           struct lance_softc *sc;
           u_int16_t port, val;
   {
           struct le_softc *lesc = (struct le_softc *)sc;
           bus_space_tag_t t = lesc->sc_bustag;
           bus_space_handle_t h = lesc->sc_reg;
   
           bus_space_write_2(t, h, LEREG1_RAP, port);
           bus_space_write_2(t, h, LEREG1_RDP, val);
   
   #if defined(SUN4M)
           /*
            * We need to flush the Sbus->Mbus write buffers. This can most
            * easily be accomplished by reading back the register that we
            * just wrote (thanks to Chris Torek for this solution).
            */
           (void)bus_space_read_2(t, h, LEREG1_RDP);
   #endif
   }
   
   static u_int16_t
   lerdcsr(sc, port)
           struct lance_softc *sc;
           u_int16_t port;
   {
           struct le_softc *lesc = (struct le_softc *)sc;
           bus_space_tag_t t = lesc->sc_bustag;
           bus_space_handle_t h = lesc->sc_reg;
   
           bus_space_write_2(t, h, LEREG1_RAP, port);
           return (bus_space_read_2(t, h, LEREG1_RDP));
   }
   
   int
   lematch_lebuffer(parent, cf, aux)
           struct device *parent;
           struct cfdata *cf;
           void *aux;
   {
           struct sbus_attach_args *sa = aux;
   
           return (strcmp(cf->cf_name, sa->sa_name) == 0);
   }
   
   
   void
   leattach_lebuffer(parent, self, aux)
           struct device *parent, *self;
           void *aux;
   {
           struct sbus_attach_args *sa = aux;
           struct le_softc *lesc = (struct le_softc *)self;
           struct lance_softc *sc = &lesc->sc_am7990.lsc;
           struct lebuf_softc *lebuf = (struct lebuf_softc *)parent;
   
           lesc->sc_bustag = sa->sa_bustag;
           lesc->sc_dmatag = sa->sa_dmatag;
   
           if (sbus_bus_map(sa->sa_bustag,
                            sa->sa_slot,
                            sa->sa_offset,
                            sa->sa_size,
                            0, &lesc->sc_reg)) {
                   printf("%s @ lebuffer: cannot map registers\n", self->dv_xname);
                   return;
           }
   
           sc->sc_mem = lebuf->sc_buffer;
           sc->sc_memsize = lebuf->sc_bufsiz;
           sc->sc_addr = 0; /* Lance view is offset by buffer location */
           lebuf->attached = 1;
   
           /* That old black magic... */
           sc->sc_conf3 = prom_getpropint(sa->sa_node, "busmaster-regval",
                                     LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
   
           /* Assume SBus is grandparent */
           lesc->sc_sd.sd_reset = (void *)lance_reset;
           sbus_establish(&lesc->sc_sd, parent);
   
           sc->sc_supmedia = lemedia;
           sc->sc_nsupmedia = NLEMEDIA;
           sc->sc_defaultmedia = lemedia[0];
   
           prom_getether(sa->sa_node, sc->sc_enaddr);
   
           sc->sc_copytodesc = lance_copytobuf_contig;
           sc->sc_copyfromdesc = lance_copyfrombuf_contig;
           sc->sc_copytobuf = lance_copytobuf_contig;
           sc->sc_copyfrombuf = lance_copyfrombuf_contig;
           sc->sc_zerobuf = lance_zerobuf_contig;
   
           sc->sc_rdcsr = lerdcsr;
           sc->sc_wrcsr = lewrcsr;
   
           am7990_config(&lesc->sc_am7990);
   
           /* Establish interrupt handler */
           if (sa->sa_nintr != 0)
                   (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri,
                                            IPL_NET, am7990_intr, sc);
   }

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