text: /*	$NetBSD: wdc_obio.c,v 1.1 2002/05/02 15:17:59 nonaka 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.
   * 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/types.h>
  #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/ata/atavar.h>
  #include <dev/ic/wdcvar.h>
  
  #include <prep/dev/obiovar.h>
  
  #define	WDC_OBIO_REG_NPORTS	8
  #define	WDC_OBIO_AUXREG_OFFSET	0x206
  #define	WDC_OBIO_AUXREG_NPORTS	1 /* XXX "fdc" owns ports 0x3f7/0x377 */
  
  /* options passed via the 'flags' config keyword */
  #define WDC_OPTIONS_32	0x01 /* try to use 32bit data I/O */
  
  struct wdc_obio_softc {
  	struct	wdc_softc sc_wdcdev;
  	struct	channel_softc *wdc_chanptr;
  	struct	channel_softc wdc_channel;
  	void	*sc_ih;
  };
  
  static int	wdc_obio_probe(struct device *, struct cfdata *, void *);
  static void	wdc_obio_attach(struct device *, struct device *, void *);
  
  struct cfattach wdc_obio_ca = {
  	sizeof(struct wdc_obio_softc), wdc_obio_probe, wdc_obio_attach
  };
  
  static int
  wdc_obio_probe(struct device *parent, struct cfdata *match, void *aux)
  {
  	struct channel_softc ch;
  	struct obio_attach_args *oa = aux;
  	int result = 0;
  
  	bzero(&ch, sizeof(ch));
  	ch.cmd_iot = oa->oa_iot;
  	if (bus_space_map(ch.cmd_iot, oa->oa_iobase, WDC_OBIO_REG_NPORTS, 0,
  	    &ch.cmd_ioh))
  		goto out;
  
  	ch.ctl_iot = oa->oa_iot;
  	if (bus_space_map(ch.ctl_iot, oa->oa_iobase + WDC_OBIO_AUXREG_OFFSET,
  	    WDC_OBIO_AUXREG_NPORTS, 0, &ch.ctl_ioh))
  		goto outunmap;
  
  	result = wdcprobe(&ch);
  	if (result) {
  		oa->oa_iosize = WDC_OBIO_REG_NPORTS;
  		oa->oa_msize = 0;
  	}
  
  	bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_OBIO_AUXREG_NPORTS);
  outunmap:
  	bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_OBIO_REG_NPORTS);
  out:
  	return (result);
  }
  
  static void
  wdc_obio_attach(struct device *parent, struct device *self, void *aux)
  {
  	struct wdc_obio_softc *sc = (void *)self;
  	struct obio_attach_args *oa = aux;
  
  	printf("\n");
  
  	sc->wdc_channel.cmd_iot = oa->oa_iot;
  	sc->wdc_channel.ctl_iot = oa->oa_iot;
  	if (bus_space_map(sc->wdc_channel.cmd_iot, oa->oa_iobase,
  	    WDC_OBIO_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh) ||
  	    bus_space_map(sc->wdc_channel.ctl_iot,
  	      oa->oa_iobase + WDC_OBIO_AUXREG_OFFSET, WDC_OBIO_AUXREG_NPORTS,
  	      0, &sc->wdc_channel.ctl_ioh)) {
  		printf("%s: couldn't map registers\n",
  		    sc->sc_wdcdev.sc_dev.dv_xname);
  	}
  	sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot;
  	sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh;
  
  	sc->sc_ih = obio_intr_establish(oa->oa_irq, IST_LEVEL,
  	    IPL_BIO, wdcintr, &sc->wdc_channel);
  
  	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA;
  	if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_32)
  		sc->sc_wdcdev.cap |= 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 = malloc(sizeof(struct channel_queue),
  	    M_DEVBUF, M_NOWAIT);
  	if (sc->wdc_channel.ch_queue == NULL) {
  		printf("%s: can't allocate memory for command queue",
  		sc->sc_wdcdev.sc_dev.dv_xname);
  		return;
  	}
  	wdcattach(&sc->wdc_channel);
  }
  