/*      $OpenBSD: uhci_cardbus.c,v 1.17 2024/05/24 06:26:47 jsg Exp $   */

/*
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson (lennart@augustsson.net) at
 * Carlstedt Research & Technology.
 *
 * 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/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/bus.h>

#include <dev/cardbus/cardbusvar.h>

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

#include <dev/usb/uhcireg.h>
#include <dev/usb/uhcivar.h>

int     uhci_cardbus_match(struct device *, void *, void *);
void    uhci_cardbus_attach(struct device *, struct device *, void *);
int     uhci_cardbus_detach(struct device *, int);

struct uhci_cardbus_softc {
        struct uhci_softc       sc;
        cardbus_chipset_tag_t   sc_cc;
        cardbus_function_tag_t  sc_cf;
        cardbus_devfunc_t       sc_ct;
        void                    *sc_ih;         /* interrupt vectoring */
};

const struct cfattach uhci_cardbus_ca = {
        sizeof(struct uhci_cardbus_softc), uhci_cardbus_match,
            uhci_cardbus_attach, uhci_cardbus_detach, uhci_activate
};

#define cardbus_findvendor pci_findvendor

int
uhci_cardbus_match(struct device *parent, void *match, void *aux)
{
        struct cardbus_attach_args *ca = (struct cardbus_attach_args *)aux;

        if (PCI_CLASS(ca->ca_class) == PCI_CLASS_SERIALBUS &&
            PCI_SUBCLASS(ca->ca_class) == PCI_SUBCLASS_SERIALBUS_USB &&
            PCI_INTERFACE(ca->ca_class) == PCI_INTERFACE_UHCI)
                return (1);
 
        return (0);
}

void
uhci_cardbus_attach(struct device *parent, struct device *self, void *aux)
{
        struct uhci_cardbus_softc *sc = (struct uhci_cardbus_softc *)self;
        struct cardbus_attach_args *ca = aux;
        cardbus_devfunc_t ct = ca->ca_ct;
        cardbus_chipset_tag_t cc = ct->ct_cc;
        pci_chipset_tag_t pc = ca->ca_pc;
        cardbus_function_tag_t cf = ct->ct_cf;
        pcireg_t csr;
        usbd_status r;
        const char *vendor;
        const char *devname = sc->sc.sc_bus.bdev.dv_xname;

        /* Map I/O registers */
        if (Cardbus_mapreg_map(ct, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
                           &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) {
                printf(": can't map io space\n");
                return;
        }

        /* Disable interrupts, so we don't get any spurious ones. */
        bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);

        sc->sc_cc = cc;
        sc->sc_cf = cf;
        sc->sc_ct = ct;
        sc->sc.sc_bus.dmatag = ca->ca_dmat;

        (ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_IO_ENABLE);
        (ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);

        /* Enable the device. */
        csr = pci_conf_read(pc, ca->ca_tag,
                                PCI_COMMAND_STATUS_REG);
        pci_conf_write(pc, ca->ca_tag, PCI_COMMAND_STATUS_REG,
                       csr | PCI_COMMAND_MASTER_ENABLE
                           | PCI_COMMAND_IO_ENABLE);

        sc->sc_ih = cardbus_intr_establish(cc, cf, ca->ca_intrline,
                                           IPL_USB, uhci_intr, sc, devname);
        if (sc->sc_ih == NULL) {
                printf(": couldn't establish interrupt\n");
                return;
        }
        printf(": irq %d\n", ca->ca_intrline);

        /* Set LEGSUP register to its default value. */
        pci_conf_write(pc, ca->ca_tag, PCI_LEGSUP,
                           PCI_LEGSUP_USBPIRQDEN);

        switch(pci_conf_read(pc, ca->ca_tag, PCI_USBREV) & PCI_USBREV_MASK) {
        case PCI_USBREV_PRE_1_0:
                sc->sc.sc_bus.usbrev = USBREV_PRE_1_0;
                break;
        case PCI_USBREV_1_0:
                sc->sc.sc_bus.usbrev = USBREV_1_0;
                break;
        case PCI_USBREV_1_1:
                sc->sc.sc_bus.usbrev = USBREV_1_1;
                break;
        default:
                sc->sc.sc_bus.usbrev = USBREV_UNKNOWN;
                break;
        }

        uhci_run(&sc->sc, 0);                   /* stop the controller */
                                                /* disable interrupts */
        bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
            BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
        bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);

        /* Figure out vendor for root hub descriptor. */
        vendor = cardbus_findvendor(ca->ca_id);
        sc->sc.sc_id_vendor = PCI_VENDOR(ca->ca_id);
        if (vendor)
                strlcpy(sc->sc.sc_vendor, vendor, sizeof (sc->sc.sc_vendor));
        else
                snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor),
                    "vendor 0x%04x", PCI_VENDOR(ca->ca_id));
        
        r = uhci_init(&sc->sc);
        if (r != USBD_NORMAL_COMPLETION) {
                printf("%s: init failed, error=%d\n", devname, r);
                bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
                return;
        }

        /* Attach usb device. */
        config_found(self, &sc->sc.sc_bus, usbctlprint);
}

int
uhci_cardbus_detach(struct device *self, int flags)
{
        struct uhci_cardbus_softc *sc = (struct uhci_cardbus_softc *)self;
        struct cardbus_devfunc *ct = sc->sc_ct;
        int rv;

        rv = uhci_detach(self, flags);
        if (rv)
                return (rv);

        if (sc->sc_ih != NULL) {
                cardbus_intr_disestablish(sc->sc_cc, sc->sc_cf, sc->sc_ih);
                sc->sc_ih = NULL;
        }

        if (sc->sc.sc_size) {
                Cardbus_mapreg_unmap(ct, PCI_CBIO, sc->sc.iot,
                    sc->sc.ioh, sc->sc.sc_size);
                sc->sc.sc_size = 0;
        }

        return (0);
}