FreeBSD/Linux Kernel Cross Reference
sys/dev/isapnp/wdc_isapnp.c

     /*      $NetBSD: wdc_isapnp.c,v 1.26 2004/01/03 22:56:53 thorpej Exp $  */
     
     /*-
      * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Charles M. Hannum and by Onno van der Linden.
      *
     * 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: wdc_isapnp.c,v 1.26 2004/01/03 22:56:53 thorpej Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    #include <sys/malloc.h>
    
    #include <machine/bus.h>
    #include <machine/intr.h>
    
    #include <dev/isa/isavar.h>
    #include <dev/isa/isadmavar.h>
    
    #include <dev/isapnp/isapnpreg.h>
    #include <dev/isapnp/isapnpvar.h>
    #include <dev/isapnp/isapnpdevs.h>
    
    #include <dev/ata/atavar.h>
    #include <dev/ic/wdcreg.h>
    #include <dev/ic/wdcvar.h>
    
    struct wdc_isapnp_softc {
            struct  wdc_softc sc_wdcdev;
            struct  wdc_channel *wdc_chanlist[1];
            struct  wdc_channel wdc_channel;
            struct  ata_queue wdc_chqueue;
            isa_chipset_tag_t sc_ic;
            void    *sc_ih;
            int     sc_drq;
    };
    
    int     wdc_isapnp_probe        __P((struct device *, struct cfdata *, void *));
    void    wdc_isapnp_attach       __P((struct device *, struct device *, void *));
    
    CFATTACH_DECL(wdc_isapnp, sizeof(struct wdc_isapnp_softc),
        wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL);
    
    #ifdef notyet
    static void     wdc_isapnp_dma_setup __P((struct wdc_isapnp_softc *));
    static void     wdc_isapnp_dma_start __P((void *, void *, size_t, int));
    static void     wdc_isapnp_dma_finish __P((void *));
    #endif
    
    int
    wdc_isapnp_probe(parent, match, aux)
            struct device *parent;
            struct cfdata *match;
            void *aux;
    {
            int pri, variant;
    
            pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant);
            if (pri && variant > 0)
                    pri = 0;
            return (pri);
    }
    
    void
    wdc_isapnp_attach(parent, self, aux)
            struct device *parent, *self;
           void *aux;
   {
           struct wdc_isapnp_softc *sc = (void *)self;
           struct isapnp_attach_args *ipa = aux;
           int i;
   
           if (ipa->ipa_nio != 2 ||
               ipa->ipa_nmem != 0 ||
               ipa->ipa_nmem32 != 0 ||
               ipa->ipa_nirq != 1 ||
               ipa->ipa_ndrq > 1) {
                   printf(": unexpected configuration\n");
                   return;
           }
   
           if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
                   printf(": couldn't map registers\n");
                   return;
           }
   
           printf(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass);
   
           sc->wdc_channel.cmd_iot = ipa->ipa_iot;
           sc->wdc_channel.ctl_iot = ipa->ipa_iot;
           /*
            * An IDE controller can feed us the regions in any order. Pass
            * them along with the 8-byte region in sc_ad.ioh, and the other
            * (2 byte) region in auxioh.
            */
           if (ipa->ipa_io[0].length == 8) {
                   sc->wdc_channel.cmd_baseioh = ipa->ipa_io[0].h;
                   sc->wdc_channel.ctl_ioh = ipa->ipa_io[1].h;
           } else {
                   sc->wdc_channel.cmd_baseioh = ipa->ipa_io[1].h;
                   sc->wdc_channel.ctl_ioh = ipa->ipa_io[0].h;
           }
   
           for (i = 0; i < WDC_NREG; i++) {
                   if (bus_space_subregion(sc->wdc_channel.cmd_iot,
                       sc->wdc_channel.cmd_baseioh, i, i == 0 ? 4 : 1,
                       &sc->wdc_channel.cmd_iohs[i]) != 0) {
                           printf(": couldn't subregion registers\n");
                           return;
                   }
           }
           sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot;
           sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_iohs[0];
   
           sc->sc_ic = ipa->ipa_ic;
           sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
               ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->wdc_channel);
   
   #ifdef notyet
           if (ipa->ipa_ndrq > 0) {
                   sc->sc_drq = ipa->ipa_drq[0].num;
   
                   sc->sc_ad.cap |= WDC_CAPABILITY_DMA;
                   sc->sc_ad.dma_start = &wdc_isapnp_dma_start;
                   sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish;
                   wdc_isapnp_dma_setup(sc);
           }
   #endif
           sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32;
           sc->sc_wdcdev.PIO_cap = 0;
           sc->wdc_chanlist[0] = &sc->wdc_channel;
           sc->sc_wdcdev.channels = sc->wdc_chanlist;
           sc->sc_wdcdev.nchannels = 1;
           sc->wdc_channel.ch_channel = 0;
           sc->wdc_channel.ch_wdc = &sc->sc_wdcdev;
           sc->wdc_channel.ch_queue = &sc->wdc_chqueue;
   
           wdcattach(&sc->wdc_channel);
   }
   
   #ifdef notyet
   static void
   wdc_isapnp_dma_setup(sc)
           struct wdc_isapnp_softc *sc;
   {
   
           if (isa_dmamap_create(sc->sc_ic, sc->sc_drq,
               MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
                   printf("%s: can't create map for drq %d\n",
                       sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq);
                   sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA;
           }
   }
   
   static void
   wdc_isapnp_dma_start(scv, buf, size, read)
           void *scv, *buf;
           size_t size;
           int read;
   {
           struct wdc_isapnp_softc *sc = scv;
   
           isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL,
               (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND,
               BUS_DMA_NOWAIT);
   }
   
   static void
   wdc_isapnp_dma_finish(scv)
           void *scv;
   {
           struct wdc_isapnp_softc *sc = scv;
   
           isa_dmadone(sc->sc_ic, sc->sc_drq);
   }
   #endif

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