text: /*-
   * Copyright 2002 by Peter Grehan. 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.
   *
   * $FreeBSD: src/sys/powerpc/powermac/ata_macio.c,v 1.19 2005/05/01 13:11:29 grehan Exp $
   */
  
  /*
   * Mac-io ATA controller
   */
  #include "opt_ata.h"
  #include <sys/param.h>
  #include <sys/systm.h>
  #include <sys/kernel.h>
  #include <sys/module.h>
  #include <sys/bus.h>
  #include <sys/malloc.h>
  #include <sys/sema.h>
  #include <sys/taskqueue.h>
  #include <vm/uma.h>
  #include <machine/stdarg.h>
  #include <machine/resource.h>
  #include <machine/bus.h>
  #include <sys/rman.h>
  #include <sys/ata.h>
  #include <dev/ata/ata-all.h>
  #include <ata_if.h>
  
  #include <dev/ofw/ofw_bus.h>
  
  /*
   * Offset to control registers from base
   */
  #define ATA_MACIO_ALTOFFSET	0x160
  
  /*
   * Define the gap between registers
   */
  #define ATA_MACIO_REGGAP	16
  
  /*
   * Define the macio ata bus attachment.
   */
  static  int  ata_macio_probe(device_t dev);
  static  void ata_macio_setmode(device_t parent, device_t dev);
  
  static device_method_t ata_macio_methods[] = {
          /* Device interface */
  	DEVMETHOD(device_probe,		ata_macio_probe),
  	DEVMETHOD(device_attach,        ata_attach),
  
  	/* ATA interface */
  	DEVMETHOD(ata_setmode,		ata_macio_setmode),
  	{ 0, 0 }
  };
  
  static driver_t ata_macio_driver = {
  	"ata",
  	ata_macio_methods,
  	sizeof(struct ata_channel),
  };
  
  DRIVER_MODULE(ata, macio, ata_macio_driver, ata_devclass, 0, 0);
  MODULE_DEPEND(ata, ata, 1, 1, 1);
  
  static int
  ata_macio_probe(device_t dev)
  {
  	const char *type = ofw_bus_get_type(dev);
  	struct ata_channel *ch;
  	struct resource *mem;
  	int rid, i;
  
  	if (strcmp(type, "ata") != 0 &&
  	    strcmp(type, "ide") != 0)
  		return (ENXIO);
  
  	ch = device_get_softc(dev);
  	bzero(ch, sizeof(struct ata_channel));
  
  	rid = 0;
  	mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
  	if (mem == NULL) {
  		device_printf(dev, "could not allocate memory\n");
  		return (ENXIO);
  	}
  
  	/*
  	 * Set up the resource vectors
  	 */
  	for (i = ATA_DATA; i <= ATA_COMMAND; i++) {
  		ch->r_io[i].res = mem;
  		ch->r_io[i].offset = i * ATA_MACIO_REGGAP;
  	}
  	ch->r_io[ATA_CONTROL].res = mem;
  	ch->r_io[ATA_CONTROL].offset = ATA_MACIO_ALTOFFSET;
  	ata_default_registers(dev);
  
  	ch->unit = 0;
  	ch->flags |= ATA_USE_16BIT;
  	ata_generic_hw(dev);
  
  	return (ata_probe(dev));
  }
  
  static void
  ata_macio_setmode(device_t parent, device_t dev)
  {
  	struct ata_device *atadev = device_get_softc(dev);
  
  	/* TODO bang macio speed register */
  	atadev->mode = ATA_PIO;
  }
  
  