/*-
 * Copyright (c) 2002-2004 M. Warner Losh.
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD: src/sys/dev/pccbb/pccbb_isa.c,v 1.4 2005/01/11 05:33:18 imp Exp $
 */

/*
 * Driver for ISA to PCMCIA bridges compliant with the Intel ExCA
 * specification.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/kthread.h>
#include <sys/bus.h>
#include <sys/rman.h>

#include <bus/isa/isavar.h>

#include <bus/pccard/pccardreg.h>
#include <bus/pccard/pccardvar.h>

#include <dev/pccard/exca/excareg.h>
#include <dev/pccard/exca/excavar.h>

#include <dev/pccard/pccbb/pccbbreg.h>
#include <dev/pccard/pccbb/pccbbvar.h>

#include "power_if.h"
#include "card_if.h"

/*****************************************************************************
 * Configurable parameters.
 *****************************************************************************/

/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD, 0, "PCIC parameters");

static int isa_intr_mask = EXCA_INT_MASK_ALLOWED;
TUNABLE_INT("hw.cbb.intr_mask", &isa_intr_mask);
SYSCTL_INT(_hw_pcic, OID_AUTO, intr_mask, CTLFLAG_RD, &isa_intr_mask, 0,
    "Mask of allowable interrupts for this laptop.  The default is generally"
    " correct, but some laptops do not route all the IRQ pins to the bridge to"
    " save wires.  Sometimes you need a more restrictive mask because some of"
    " the hardware in your laptop may not have a driver so its IRQ might not be"
    " allocated.");

/*****************************************************************************
 * End of configurable parameters.
 *****************************************************************************/

#define DPRINTF(x) do { if (cbb_debug) kprintf x; } while (0)
#define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)

static struct isa_pnp_id pcic_ids[] = {
        {EXCA_PNP_ACTIONTEC,            NULL},          /* AEI0218 */
        {EXCA_PNP_IBM3765,              NULL},          /* IBM3765 */
        {EXCA_PNP_82365,                NULL},          /* PNP0E00 */
        {EXCA_PNP_CL_PD6720,            NULL},          /* PNP0E01 */
        {EXCA_PNP_VLSI_82C146,          NULL},          /* PNP0E02 */
        {EXCA_PNP_82365_CARDBUS,        NULL},          /* PNP0E03 */
        {EXCA_PNP_SCM_SWAPBOX,          NULL},          /* SCM0469 */
        {0}
};

/************************************************************************/
/* Probe/Attach                                                         */
/************************************************************************/

#if 0
        struct resource *res;
        int rid;
        int i;

        /* A little bogus, but go ahead and get the irq for CSC events */
        rid = 0;
        res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
        if (res == NULL) {
                /*
                 * No IRQ specified, find one.  This can be due to the PnP
                 * data not specifying any IRQ, or the default kernel not
                 * assinging an IRQ.
                 */
                for (i = 0; i < 16; i++) {
                        if (((1 << i) & isa_intr_mask) == 0)
                                continue;
                        res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i,
                            1, RF_ACTIVE);
                        if (res != NULL)
                                break;
                }
                if (res == NULL)
                        return (ENXIO);
                bus_release_resource(dev, SYS_RES_IRQ, rid, res);       
                bus_set_resource(dev, SYS_RES_IRQ, 0, i, 1);
        } else {
                bus_release_resource(dev, SYS_RES_IRQ, rid, res);
        }
        if (res == NULL) {
                device_printf(dev, "Cannot allocate mem\n");
                return (ENOMEM);
        }
#endif

static int
cbb_isa_activate(device_t dev)
{
        return (ENOMEM);
}

static void
cbb_isa_deactivate(device_t dev)
{
}

static int
cbb_isa_probe(device_t dev)
{
        int error;
        struct cbb_softc *sc = device_get_softc(dev);

        /* Check isapnp ids */
        error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids);
        if (error != 0 && error != ENOENT)
                return (error);

        error = cbb_isa_activate(dev);
        if (error != 0)
                return (error);

        /* Check to make sure that we have actual hardware */
        error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh);
        cbb_isa_deactivate(dev);
        return (error);
}

static int
cbb_isa_attach(device_t dev)
{
        return (ENOMEM);
}

static device_method_t cbb_methods[] = {
        /* Device interface */
        DEVMETHOD(device_probe,                 cbb_isa_probe),
        DEVMETHOD(device_attach,                cbb_isa_attach),
        DEVMETHOD(device_detach,                cbb_detach),
        DEVMETHOD(device_shutdown,              cbb_shutdown),
        DEVMETHOD(device_suspend,               cbb_suspend),
        DEVMETHOD(device_resume,                cbb_resume),

        /* bus methods */
        DEVMETHOD(bus_print_child,              bus_generic_print_child),
        DEVMETHOD(bus_read_ivar,                cbb_read_ivar),
        DEVMETHOD(bus_write_ivar,               cbb_write_ivar),
        DEVMETHOD(bus_alloc_resource,           cbb_alloc_resource),
        DEVMETHOD(bus_release_resource,         cbb_release_resource),
        DEVMETHOD(bus_activate_resource,        cbb_activate_resource),
        DEVMETHOD(bus_deactivate_resource,      cbb_deactivate_resource),
        DEVMETHOD(bus_driver_added,             cbb_driver_added),
        DEVMETHOD(bus_child_detached,           cbb_child_detached),
        DEVMETHOD(bus_setup_intr,               cbb_setup_intr),
        DEVMETHOD(bus_teardown_intr,            cbb_teardown_intr),
        DEVMETHOD(bus_child_present,            cbb_child_present),

        /* 16-bit card interface */
        DEVMETHOD(card_set_res_flags,           cbb_pcic_set_res_flags),
        DEVMETHOD(card_set_memory_offset,       cbb_pcic_set_memory_offset),

        /* power interface */
        DEVMETHOD(power_enable_socket,          cbb_power_enable_socket),
        DEVMETHOD(power_disable_socket,         cbb_power_disable_socket),

        DEVMETHOD_END
};

static driver_t cbb_isa_driver = {
        "cbb",
        cbb_methods,
        sizeof(struct cbb_softc)
};

DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, NULL, NULL);
MODULE_DEPEND(cbb, exca, 1, 1, 1);