FreeBSD/Linux Kernel Cross Reference
sys/dev/podulebus/hcide.c

     /*      $NetBSD: hcide.c,v 1.12 2004/01/03 22:56:53 thorpej Exp $       */
     
     /*-
      * Copyright (c) 2000, 2001 Ben Harris
      * 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. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
     */
    /*
     * hcide.c - Driver for the HCCS 16-bit IDE interface.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: hcide.c,v 1.12 2004/01/03 22:56:53 thorpej Exp $");
    
    #include <sys/param.h>
    
    #include <sys/device.h>
    #include <sys/systm.h>
    
    #include <machine/bus.h>
    
    #include <dev/podulebus/podulebus.h>
    #include <dev/podulebus/podules.h>
    #include <dev/podulebus/hcidereg.h>
    
    #include <dev/ata/atavar.h>
    #include <dev/ic/wdcreg.h>
    #include <dev/ic/wdcvar.h>
    
    struct hcide_softc {
            struct wdc_softc sc_wdc;
            struct wdc_channel *sc_chp[HCIDE_NCHANNELS];/* pointers to sc_chan */
            struct wdc_channel sc_chan[HCIDE_NCHANNELS];
            struct ata_queue sc_chq[HCIDE_NCHANNELS];
    };
    
    static int  hcide_match  (struct device *, struct cfdata *, void *);
    static void hcide_attach (struct device *, struct device *, void *);
    
    CFATTACH_DECL(hcide, sizeof(struct hcide_softc),
        hcide_match, hcide_attach, NULL, NULL);
    
    static const int hcide_cmdoffsets[] = { HCIDE_CMD0, HCIDE_CMD1, HCIDE_CMD2 };
    static const int hcide_ctloffsets[] = { HCIDE_CTL, HCIDE_CTL, HCIDE_CTL };
    
    static int
    hcide_match(struct device *parent, struct cfdata *cf, void *aux)
    {
            struct podulebus_attach_args *pa = aux;
    
            if (pa->pa_product == PODULE_HCCS_IDESCSI &&
                strncmp(pa->pa_descr, "IDE", 3) == 0)
                    return 1;
            return 0;
    }
    
    static void
    hcide_attach(struct device *parent, struct device *self, void *aux)
    {
            struct hcide_softc *sc = (void *)self;
            struct podulebus_attach_args *pa = aux;
            struct wdc_channel *ch;
            int i, j;
    
            sc->sc_wdc.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_NOIRQ;
            sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
            sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
            sc->sc_wdc.UDMA_cap = 0;
            sc->sc_wdc.nchannels = HCIDE_NCHANNELS;
            sc->sc_wdc.channels = sc->sc_chp;
            printf("\n");
            for (i = 0; i < HCIDE_NCHANNELS; i++) {
                    ch = sc->sc_chp[i] = &sc->sc_chan[i];
                    ch->ch_channel = i;
                    ch->ch_wdc = &sc->sc_wdc;
                    ch->cmd_iot = pa->pa_mod_t;
                    ch->ctl_iot = pa->pa_mod_t;
                    ch->ch_queue = &sc->sc_chq[i];
                   bus_space_map(pa->pa_fast_t,
                       pa->pa_fast_base + hcide_cmdoffsets[i], 0, 8,
                       &ch->cmd_baseioh);
                   for (j = 0; j < WDC_NREG; j++)
                           bus_space_subregion(ch->cmd_iot, ch->cmd_baseioh,
                               j, j == 0 ? 4 : 1, &ch->cmd_iohs[j]);
                   bus_space_map(pa->pa_fast_t,
                       pa->pa_fast_base + hcide_ctloffsets[i], 0, 8,
                       &ch->ctl_ioh);
                   wdcattach(ch);
           }
   
   }

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