FreeBSD/Linux Kernel Cross Reference
sys/dev/marvell/obio.c

     /*      $NetBSD: obio.c,v 1.3 2003/07/14 15:47:18 lukem Exp $   */
     
     /*
      * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc.
      * 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 for the NetBSD Project by
     *      Allegro Networks, Inc., and Wasabi Systems, Inc.
     * 4. The name of Allegro Networks, Inc. may not be used to endorse
     *    or promote products derived from this software without specific prior
     *    written permission.
     * 5. The name of Wasabi Systems, Inc. may not be used to endorse
     *    or promote products derived from this software without specific prior
     *    written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND
     * WASABI SYSTEMS, INC. ``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 EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC.
     * 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.
     */
    
    /*
     * gt.c -- GT system controller driver
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.3 2003/07/14 15:47:18 lukem Exp $");
    
    #include "opt_marvell.h"
    
    #include <sys/param.h>
    #include <sys/types.h>
    #include <sys/cdefs.h>
    #include <sys/extent.h>
    #include <sys/device.h>
    #include <sys/kernel.h>
    #include <sys/malloc.h>
    
    #define _BUS_SPACE_PRIVATE
    #define _BUS_DMA_PRIVATE
    #include <machine/bus.h>
    
    #include <powerpc/spr.h>
    #include <powerpc/oea/hid.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/marvell/gtreg.h>
    #include <dev/marvell/gtvar.h>
    
    #ifdef DEBUG
    #include <sys/systm.h>  /* for Debugger() */
    #endif
    
    static int obio_cfprint(void *, const char *);
    static int obio_cfmatch(struct device *, struct cfdata *, void *);
    static int obio_cfsearch(struct device *, struct cfdata *, void *);
    static void obio_cfattach(struct device *, struct device *, void *);
    
    struct obio_softc {
            struct device sc_dev;
            bus_space_tag_t sc_memt;
            bus_space_tag_t sc_gt_memt;
            bus_space_tag_t sc_gt_memh;
    };
    
    CFATTACH_DECL(obio, sizeof(struct obio_softc),
        obio_cfmatch, obio_cfattach, NULL, NULL);
    
    extern struct cfdriver obio_cd;
    
    static const struct {
        bus_addr_t low_decode;
        bus_addr_t high_decode;
    } obio_info[5] = {
        { GT_CS0_Low_Decode, GT_CS0_High_Decode, },
        { GT_CS1_Low_Decode, GT_CS1_High_Decode, },
        { GT_CS2_Low_Decode, GT_CS2_High_Decode, },
        { GT_CS3_Low_Decode, GT_CS3_High_Decode, },
        { GT_BootCS_Low_Decode, GT_BootCS_High_Decode, },
    };
    
   extern bus_space_tag_t obio_bs_tags[5];
   
   int
   obio_cfprint(void *aux, const char *pnp)
   {
           struct obio_attach_args *oa = aux;
   
           if (pnp) {
                   aprint_normal("%s at %s", oa->oa_name, pnp);
           }
           aprint_normal(" offset %#x size %#x", oa->oa_offset, oa->oa_size);
           if (oa->oa_irq != OBIO_UNK_IRQ)
                   aprint_normal(" irq %d", oa->oa_irq);
   
           return (UNCONF);
   }
   
   
   int
   obio_cfsearch(struct device *parent, struct cfdata *cf, void *aux)
   {
           struct obio_softc *sc = (struct obio_softc *) parent;
           struct obio_attach_args oa;
   
           oa.oa_name = cf->cf_name;
           oa.oa_memt = sc->sc_memt;
           oa.oa_offset = cf->obiocf_offset;
           oa.oa_size = cf->obiocf_size;
           oa.oa_irq = cf->obiocf_irq;
   
           if (config_match(parent, cf, &oa) > 0)
                   config_attach(parent, cf, &oa, obio_cfprint);
   
           return (0);
   }
   
   int
   obio_cfmatch(struct device *parent, struct cfdata *cf, void *aux)
   {
           struct gt_softc * const gt = (struct gt_softc *)parent;
           struct gt_attach_args * const ga = aux;
   
           return GT_OBIOOK(gt, ga, &obio_cd);
   }
   
   void
   obio_cfattach(struct device *parent, struct device *self, void *aux)
   {
           struct gt_softc * const gt = (struct gt_softc *)parent;
           struct obio_softc *sc = (struct obio_softc *)self;
           struct gt_attach_args *ga = aux;
           uint32_t datal, datah;
   
           GT_OBIOFOUND(gt, ga);
   
           datal = bus_space_read_4(ga->ga_memt, ga->ga_memh,
               obio_info[ga->ga_unit].low_decode);
           datah = bus_space_read_4(ga->ga_memt, ga->ga_memh,
               obio_info[ga->ga_unit].high_decode);
   
           if (GT_LowAddr_GET(datal) > GT_HighAddr_GET(datah)) {
                   aprint_normal(": disabled\n");
                   return;
           }
   
           sc->sc_memt = obio_bs_tags[ga->ga_unit];
           if (sc->sc_memt == NULL) {
                   aprint_normal(": unused\n");
                   return;
           }
   
           aprint_normal(": addr %#x-%#x, %s-endian\n",
               GT_LowAddr_GET(datal), GT_HighAddr_GET(datah),
               GT_PCISwap_GET(datal) == 1 ? "little" : "big");
   
           config_search(obio_cfsearch, &sc->sc_dev, NULL);
   }
   

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