/*      $OpenBSD: octohci.c,v 1.4 2019/01/07 03:41:06 dlg Exp $ */

/*
 * Copyright (c) 2015 Jonathan Matthew  <jmatthew@openbsd.org>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

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

#include <machine/intr.h>
#include <machine/bus.h>
#include <machine/octeonreg.h>
#include <machine/octeonvar.h>

#include <octeon/dev/octuctlreg.h>
#include <octeon/dev/octuctlvar.h>

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

#include <dev/usb/ohcireg.h>
#include <dev/usb/ohcivar.h>

struct octohci_softc {
        struct ohci_softc       sc_ohci;

        void                    *sc_ih;
        uint64_t                sc_reg_size;
};

int             octohci_match(struct device *, void *, void *);
void            octohci_attach(struct device *, struct device *, void *);
void            octohci_attach_deferred(struct device *);

const struct cfattach octohci_ca = {
        sizeof(struct octohci_softc), octohci_match, octohci_attach,
};

struct cfdriver octohci_cd = {
        NULL, "ohci", DV_DULL
};

int
octohci_match(struct device *parent, void *match, void *aux)
{
        struct octuctl_attach_args *aa = aux;
        return (OF_is_compatible(aa->aa_node, "cavium,octeon-6335-ohci"));
}

void
octohci_attach(struct device *parent, struct device *self, void *aux)
{
        struct octohci_softc *sc = (struct octohci_softc *)self;
        struct octuctl_attach_args *aa = aux;
        uint64_t port_ctl;
        int rc;
        int s;

        sc->sc_ohci.iot = aa->aa_bust;
        sc->sc_ohci.sc_bus.pipe_size = sizeof(struct usbd_pipe);
        sc->sc_ohci.sc_bus.dmatag = aa->aa_dmat;

        rc = bus_space_map(sc->sc_ohci.iot, aa->aa_reg.addr, aa->aa_reg.size,
            0, &sc->sc_ohci.ioh);
        KASSERT(rc == 0);
        sc->sc_reg_size = aa->aa_reg.size;

        port_ctl = bus_space_read_8(aa->aa_octuctl_bust, aa->aa_ioh,
            UCTL_OHCI_CTL);
        port_ctl &= ~UCTL_OHCI_CTL_L2C_ADDR_MSB_MASK;
        port_ctl |= (1 << UCTL_OHCI_CTL_L2C_DESC_EMOD_SHIFT);
        port_ctl |= (1 << UCTL_OHCI_CTL_L2C_BUFF_EMOD_SHIFT);
        bus_space_write_8(aa->aa_octuctl_bust, aa->aa_ioh, UCTL_OHCI_CTL,
            port_ctl);

        s = splusb();

        sc->sc_ohci.sc_id_vendor = 0;
        strlcpy(sc->sc_ohci.sc_vendor, "Octeon", sizeof(sc->sc_ohci.sc_vendor));

        sc->sc_ih = octeon_intr_establish(CIU_INT_USB, IPL_USB, ohci_intr,
            (void *)&sc->sc_ohci, sc->sc_ohci.sc_bus.bdev.dv_xname);
        KASSERT(sc->sc_ih != NULL);

        printf(", ");

        if ((ohci_checkrev(&sc->sc_ohci) != USBD_NORMAL_COMPLETION) ||
            (ohci_handover(&sc->sc_ohci) != USBD_NORMAL_COMPLETION))
                goto failed;

        /* ignore interrupts for now */
        sc->sc_ohci.sc_bus.dying = 1;
        config_defer(self, octohci_attach_deferred);

        splx(s);
        return;

failed:
        octeon_intr_disestablish(sc->sc_ih);
        bus_space_unmap(sc->sc_ohci.iot, sc->sc_ohci.ioh, sc->sc_reg_size);
        splx(s);
        return;
}

void
octohci_attach_deferred(struct device *self)
{
        struct octohci_softc *sc = (struct octohci_softc *)self;
        usbd_status r;
        int s;

        s = splusb();
        sc->sc_ohci.sc_bus.dying = 0;

        r = ohci_init(&sc->sc_ohci);
        splx(s);

        if (r != USBD_NORMAL_COMPLETION) {
                printf("%s: init failed, error=%d\n",
                    sc->sc_ohci.sc_bus.bdev.dv_xname, r);
                octeon_intr_disestablish(sc->sc_ih);
                bus_space_unmap(sc->sc_ohci.iot, sc->sc_ohci.ioh,
                    sc->sc_reg_size);
        } else {
                config_found(self, &sc->sc_ohci.sc_bus, usbctlprint);
        }
}