xref: /dflybsd-src/sys/dev/disk/ahci/ahci_dragonfly.c (revision 3209f581df87eb2723810cc4f0dcb8be697198e9)

/*
 * Copyright (c) 2009 The DragonFly Project.  All rights reserved.
 *
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@backplane.com>
 *
 * 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. Neither the name of The DragonFly Project 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 COPYRIGHT HOLDERS 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
 * COPYRIGHT HOLDERS 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.
 */
/*
 * Primary device and CAM interface to OpenBSD AHCI driver, for DragonFly
 */

#include "ahci.h"

/*
 * Device bus methods
 */

static int	ahci_probe (device_t dev);
static int	ahci_attach (device_t dev);
static int	ahci_detach (device_t dev);
#if 0
static int	ahci_shutdown (device_t dev);
static int	ahci_suspend (device_t dev);
static int	ahci_resume (device_t dev);
#endif

static device_method_t ahci_methods[] = {
	DEVMETHOD(device_probe,		ahci_probe),
	DEVMETHOD(device_attach,	ahci_attach),
	DEVMETHOD(device_detach,	ahci_detach),
#if 0
	DEVMETHOD(device_shutdown,	ahci_shutdown),
	DEVMETHOD(device_suspend,	ahci_suspend),
	DEVMETHOD(device_resume,	ahci_resume),
#endif

	DEVMETHOD(bus_print_child,	bus_generic_print_child),
	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
	{0, 0}
};

static devclass_t	ahci_devclass;

static driver_t ahci_driver = {
	"ahci",
	ahci_methods,
	sizeof(struct ahci_softc)
};

MODULE_DEPEND(ahci, cam, 1, 1, 1);
DRIVER_MODULE(ahci, pci, ahci_driver, ahci_devclass, 0, 0);

/*
 * Device bus method procedures
 */
static int
ahci_probe (device_t dev)
{
	const struct ahci_device *ad;

	ad = ahci_lookup_device(dev);
	if (ad) {
		device_set_desc(dev, ad->name);
		return(-5);	/* higher priority the NATA */
	}
	return(ENXIO);
}

static int
ahci_attach (device_t dev)
{
	struct ahci_softc *sc = device_get_softc(dev);
	int error;

	sc->sc_ad = ahci_lookup_device(dev);
	if (sc->sc_ad == NULL)
		return(ENXIO);
	error = sc->sc_ad->ad_attach(dev);
	return (error);
}

static int
ahci_detach (device_t dev)
{
	struct ahci_softc *sc = device_get_softc(dev);
	int error = 0;

	if (sc->sc_ad) {
		error = sc->sc_ad->ad_detach(dev);
		sc->sc_ad = NULL;
	}
	return(error);
}

#if 0

static int
ahci_shutdown (device_t dev)
{
	return (0);
}

static int
ahci_suspend (device_t dev)
{
	return (0);
}

static int
ahci_resume (device_t dev)
{
	return (0);
}

#endif

void
ahci_os_sleep(int ms)
{
	int ticks;

#if 0
	if (mygd->gd_intr_nesting_level) {
		DELAY(ms * 1000);
	} else {
#endif
	{
		ticks = hz * ms / 1000 + 1;
		tsleep(&ticks, 0, "ahslp", ticks);
	}
}