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

     /*      $OpenBSD: wdc_isapnp.c,v 1.13 2022/04/06 18:59:29 naddy Exp $   */
     /*      $NetBSD: wdc_isapnp.c,v 1.13 1999/03/22 10:00:12 mycroft Exp $  */
     
     /*-
      * Copyright (c) 1998 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.
     *
     * 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/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/ata/atavar.h>
    #include <dev/ic/wdcreg.h>
    #include <dev/ic/wdcvar.h>
    
    struct wdc_isapnp_softc {
            struct  wdc_softc sc_wdcdev;
            struct  channel_softc *wdc_chanptr;
            struct  channel_softc wdc_channel;
            isa_chipset_tag_t sc_ic;
            void    *sc_ih;
            int     sc_drq;
    };
    
    int     wdc_isapnp_match(struct device *, void *, void *);
    void    wdc_isapnp_attach(struct device *, struct device *, void *);
    
    const struct cfattach wdc_isapnp_ca = {
            sizeof(struct wdc_isapnp_softc), wdc_isapnp_match, wdc_isapnp_attach
    };
    
    int
    wdc_isapnp_match(struct device *parent, void *match, void *aux)
    {
            struct isa_attach_args *ipa = aux;
    
            if (ipa->ipa_nio != 2 ||
                ipa->ipa_nmem != 0 ||
                ipa->ipa_nmem32 != 0 ||
                ipa->ipa_nirq != 1 ||
                ipa->ipa_ndrq > 1)
                    return 0;
    
            return (1);
    }
    
    void
    wdc_isapnp_attach(struct device *parent, struct device *self, void *aux)
    {
            struct wdc_isapnp_softc *sc = (void *)self;
            struct isa_attach_args *ipa = aux;
    
    
            sc->wdc_channel.cmd_iot = ipa->ia_iot;
            sc->wdc_channel.ctl_iot = ipa->ia_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_ioh = ipa->ipa_io[0].h;
                    sc->wdc_channel.ctl_ioh = ipa->ipa_io[1].h;
            } else {
                    sc->wdc_channel.cmd_ioh = ipa->ipa_io[1].h;
                    sc->wdc_channel.ctl_ioh = ipa->ipa_io[0].h;
           }
           sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot;
           sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh;
   
           sc->sc_ic = ipa->ia_ic;
           sc->sc_ih = isa_intr_establish(ipa->ia_ic, ipa->ipa_irq[0].num,
               ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->wdc_channel,
               sc->sc_wdcdev.sc_dev.dv_xname);
   
           sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32;
           sc->sc_wdcdev.PIO_cap = 0;
           sc->wdc_chanptr = &sc->wdc_channel;
           sc->sc_wdcdev.channels = &sc->wdc_chanptr;
           sc->sc_wdcdev.nchannels = 1;
           sc->wdc_channel.channel = 0;
           sc->wdc_channel.wdc = &sc->sc_wdcdev;
           sc->wdc_channel.ch_queue = wdc_alloc_queue();
           if (sc->wdc_channel.ch_queue == NULL) {
                   printf(": cannot allocate channel queue\n");
                   return;
           }
   
           printf("\n");
           wdcattach(&sc->wdc_channel);
           wdc_print_current_modes(&sc->wdc_channel);
   }

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