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

     /*      $NetBSD: lebuffer.c,v 1.19 2004/03/17 17:04:58 pk Exp $ */
     
     /*-
      * Copyright (c) 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by 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: lebuffer.c,v 1.19 2004/03/17 17:04:58 pk Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/errno.h>
    #include <sys/device.h>
    #include <sys/malloc.h>
    
    #include <machine/bus.h>
    #include <machine/autoconf.h>
    #include <machine/cpu.h>
    
    #include <dev/sbus/sbusvar.h>
    #include <dev/sbus/lebuffervar.h>
    
    int     lebufprint      __P((void *, const char *));
    int     lebufmatch      __P((struct device *, struct cfdata *, void *));
    void    lebufattach     __P((struct device *, struct device *, void *));
    
    CFATTACH_DECL(lebuffer, sizeof(struct lebuf_softc),
        lebufmatch, lebufattach, NULL, NULL);
    
    int
    lebufprint(aux, busname)
            void *aux;
            const char *busname;
    {
            struct sbus_attach_args *sa = aux;
            bus_space_tag_t t = sa->sa_bustag;
            struct lebuf_softc *sc = t->cookie;
    
            sa->sa_bustag = sc->sc_bustag;  /* XXX */
            sbus_print(aux, busname);       /* XXX */
            sa->sa_bustag = t;              /* XXX */
            return (UNCONF);
    }
    
    int
    lebufmatch(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);
    }
    
    /*
     * Attach all the sub-devices we can find
     */
    void
    lebufattach(parent, self, aux)
            struct device *parent, *self;
            void *aux;
    {
            struct sbus_attach_args *sa = aux;
            struct lebuf_softc *sc = (void *)self;
            int node;
           int sbusburst;
           bus_space_tag_t sbt;
           bus_space_handle_t bh;
   
           sc->sc_bustag = sa->sa_bustag;
           sc->sc_dmatag = sa->sa_dmatag;
   
           if (sbus_bus_map(sa->sa_bustag,
                            sa->sa_slot, sa->sa_offset, sa->sa_size,
                            BUS_SPACE_MAP_LINEAR, &bh) != 0) {
                   printf("%s: attach: cannot map registers\n", self->dv_xname);
                   return;
           }
   
           /*
            * This device's "register space" is just a buffer where the
            * Lance ring-buffers can be stored. Note the buffer's location
            * and size, so the `le' driver can pick them up.
            */
           sc->sc_buffer = bus_space_vaddr(sa->sa_bustag, bh);
           sc->sc_bufsiz = sa->sa_size;
   
           node = sc->sc_node = sa->sa_node;
   
           /*
            * Get transfer burst size from PROM
            */
           sbusburst = ((struct sbus_softc *)parent)->sc_burst;
           if (sbusburst == 0)
                   sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
   
           sc->sc_burst = prom_getpropint(node, "burst-sizes", -1);
           if (sc->sc_burst == -1)
                   /* take SBus burst sizes */
                   sc->sc_burst = sbusburst;
   
           /* Clamp at parent's burst sizes */
           sc->sc_burst &= sbusburst;
   
           sbus_establish(&sc->sc_sd, &sc->sc_dev);
   
           /* Allocate a bus tag */
           sbt = (bus_space_tag_t) malloc(sizeof(struct sparc_bus_space_tag), 
               M_DEVBUF, M_NOWAIT|M_ZERO);
           if (sbt == NULL) {
                   printf("%s: attach: out of memory\n", self->dv_xname);
                   return;
           }
   
           printf(": %dK memory\n", sc->sc_bufsiz / 1024);
   
           sbt->cookie = sc;
           sbt->parent = sc->sc_bustag;
   
           /* search through children */
           for (node = firstchild(node); node; node = nextsibling(node)) {
                   struct sbus_attach_args sa;
                   sbus_setup_attach_args((struct sbus_softc *)parent,
                                          sbt, sc->sc_dmatag, node, &sa);
                   (void)config_found(&sc->sc_dev, (void *)&sa, lebufprint);
                   sbus_destroy_attach_args(&sa);
           }
   }

Cache object: 9e0657daccd929204b084e22f42b75e8