/* $NetBSD: slhci_zbus.c,v 1.3 2023/12/20 00:40:42 thorpej Exp $ */

/* $NetBSD: slhci_zbus.c,v 1.3 2023/12/20 00:40:42 thorpej Exp $ */

/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Radoslaw Kujawa.
*
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: slhci_zbus.c,v 1.3 2023/12/20 00:40:42 thorpej Exp $");

/*
* Thylacine driver.
* Inspired by slhci_intio.c.
*/

#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/bus.h>

#include <amiga/amiga/device.h>
#include <amiga/amiga/isr.h>

#include <amiga/dev/zbusvar.h>

#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>

#include <dev/ic/sl811hsreg.h>
#include <dev/ic/sl811hsvar.h>

#define THYLACINE_SLHCI_PWR_OFFSET 0x100
#define THYLACINE_SLHCI_ADDR_OFFSET 0x1
#define THYLACINE_SLHCI_DATA_STRIDE 0x4000
#define THYLACINE_SIZE 0x8000

static int slhci_zbus_match(device_t, cfdata_t , void *);
static void slhci_zbus_attach(device_t, device_t, void *);
static void slhci_zbus_enable_power(void *, enum power_change);

struct slhci_zbus_softc {
struct slhci_softc sc_sc;

struct bus_space_tag sc_bst;
struct isr sc_isr;
};

CFATTACH_DECL_NEW(slhci_zbus, sizeof(struct slhci_zbus_softc),
slhci_zbus_match, slhci_zbus_attach, NULL, NULL);

static int
slhci_zbus_match(device_t parent, cfdata_t cf, void *aux)
{
struct zbus_args *zap = aux;

/* Thylacine */
if (zap->manid == 0x1392 && zap->prodid == 0x1) {
return 1;
}

return 0;
}

static void
slhci_zbus_attach(device_t parent, device_t self, void *aux)
{
struct slhci_zbus_softc *zsc;
struct slhci_softc *sc;
struct zbus_args *zap;
bus_space_tag_t iot;
bus_space_handle_t ioh;

zap = aux;
zsc = device_private(self);
sc = &zsc->sc_sc;
sc->sc_dev = self;
sc->sc_bus.ub_hcpriv = sc;

zsc->sc_bst.base = (bus_addr_t)zap->va;
zsc->sc_bst.absm = &amiga_bus_stride_1;
iot = &zsc->sc_bst;

aprint_normal(": Thylacine USB Host Controller\n");

if (bus_space_map(iot, THYLACINE_SLHCI_ADDR_OFFSET, THYLACINE_SIZE, 0,
&ioh)) {
aprint_error_dev(sc->sc_dev, "can't map the bus\n");
}

slhci_preinit(sc, slhci_zbus_enable_power, iot, ioh, 500,
THYLACINE_SLHCI_DATA_STRIDE);

/* Attach interrupt routine. */
zsc->sc_isr.isr_intr = slhci_intr;
zsc->sc_isr.isr_arg = sc;
zsc->sc_isr.isr_ipl = 6;
add_isr(&zsc->sc_isr);

slhci_attach(sc);

}

static void
slhci_zbus_enable_power(void *arg, enum power_change mode)
{
struct slhci_zbus_softc *zsc = arg;

/*
* The hardware is dumb. Changing power mode depends only on A8 being
* low or high.
*/
if (mode == POWER_ON)
bus_space_read_1(zsc->sc_sc.sc_iot, zsc->sc_sc.sc_ioh,
THYLACINE_SLHCI_DATA_STRIDE);
else
bus_space_read_1(zsc->sc_sc.sc_iot, zsc->sc_sc.sc_ioh,
THYLACINE_SLHCI_PWR_OFFSET);
}