/*      $NetBSD: i82365_pci.c,v 1.33 2012/10/27 17:18:32 chs Exp $      */

/*
 * Copyright (c) 1997 Marc Horowitz.  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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Marc Horowitz.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

/*
 * XXX this driver frontend is *very* i386 dependent and should be relocated
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: i82365_pci.c,v 1.33 2012/10/27 17:18:32 chs Exp $");

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

#include <dev/ic/i82365reg.h>
#include <dev/ic/i82365var.h>

#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/i82365_pcivar.h>

#include <dev/isa/isavar.h>
#include <dev/isa/i82365_isavar.h>

/*
 * PCI constants.
 * XXX These should be in a common file!
 */
#define PCI_CBIO                0x10    /* Configuration Base IO Address */

int     pcic_pci_match(device_t, cfdata_t, void *);
void    pcic_pci_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(pcic_pci, sizeof(struct pcic_pci_softc),
    pcic_pci_match, pcic_pci_attach, NULL, NULL);

static const struct pcmcia_chip_functions pcic_pci_functions = {
        pcic_chip_mem_alloc,
        pcic_chip_mem_free,
        pcic_chip_mem_map,
        pcic_chip_mem_unmap,

        pcic_chip_io_alloc,
        pcic_chip_io_free,
        pcic_chip_io_map,
        pcic_chip_io_unmap,

        /* XXX */
        pcic_isa_chip_intr_establish,
        pcic_isa_chip_intr_disestablish,

        pcic_chip_socket_enable,
        pcic_chip_socket_disable,
        pcic_chip_socket_settype,

        NULL,                           /* card_detect */
};

static void pcic_pci_callback(device_t);

int
pcic_pci_match(device_t parent, cfdata_t match, void *aux)
{
        struct pci_attach_args *pa = aux;

        switch (PCI_VENDOR(pa->pa_id)) {
        case PCI_VENDOR_CIRRUS:
                switch (PCI_PRODUCT(pa->pa_id)) {
                case PCI_PRODUCT_CIRRUS_CL_PD6729:
                        break;
                default:
                        return 0;
                }
                break;
        default:
                return 0;
        }
        return 1;
}

void
pcic_pci_attach(device_t parent, device_t self, void *aux)
{
        struct pcic_pci_softc *psc = device_private(self);
        struct pcic_softc *sc = &psc->sc_pcic;
        struct pci_attach_args *pa = aux;
        pci_chipset_tag_t pc = pa->pa_pc;
        bus_space_tag_t memt = pa->pa_memt;
        bus_space_handle_t memh;
        const char *model;

        sc->dev = self;

        aprint_naive(": PCMCIA controller\n");

        if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
            &sc->iot, &sc->ioh, NULL, NULL)) {
                aprint_error(": can't map i/o space\n");
                return;
        }

        /*
         * XXX need some memory for mapping pcmcia cards into. Ideally, this
         * would be completely dynamic.  Practically this doesn't work,
         * because the extent mapper doesn't know about all the devices all
         * the time.  With ISA we could finesse the issue by specifying the
         * memory region in the config line.  We can't do that here, so we
         * cheat for now. Jason Thorpe, you are my Savior, come up with a fix
         * :-)
         */

        /* Map mem space. */
        if (bus_space_map(memt, 0xd0000, 0x4000, 0, &memh))
                panic("pcic_pci_attach: can't map mem space");

        sc->membase = 0xd0000;
        sc->subregionmask = (1 << (0x4000 / PCIC_MEM_PAGESIZE)) - 1;

        /* same deal for io allocation */

        sc->iobase = 0x400;
        sc->iosize = 0xbff;

        /* end XXX */

        sc->pct = &pcic_pci_functions;

        sc->memt = memt;
        sc->memh = memh;

        switch (PCI_PRODUCT(pa->pa_id)) {
        case PCI_PRODUCT_CIRRUS_CL_PD6729:
                model = "Cirrus Logic PD6729 PCMCIA controller";
                break;
        default:
                model = "Model unknown";
                break;
        }

        aprint_normal(": %s\n", model);

        /* Enable the card. */
        pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
            pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
            PCI_COMMAND_MASTER_ENABLE);

        pcic_attach(sc);

        /*
         * Check to see if we're using PCI or ISA interrupts. I don't
         * know of any i386 systems that use the 6729 in PCI interrupt
         * mode, but maybe when the PCMCIA code runs on other platforms
         * we'll need to fix this.
         */
        pcic_write(&sc->handle[0], PCIC_CIRRUS_EXTENDED_INDEX,
            PCIC_CIRRUS_EXT_CONTROL_1);
        if ((pcic_read(&sc->handle[0], PCIC_CIRRUS_EXTENDED_DATA) &
            PCIC_CIRRUS_EXT_CONTROL_1_PCI_INTR_MASK)) {
                aprint_error_dev(self, "PCI interrupts not supported\n");
                return;
        }

        psc->intr_est = pcic_pci_machdep_intr_est(pc);
        sc->irq = -1;

#if 0
        /* Map and establish the interrupt. */
        sc->ih = pcic_pci_machdep_pcic_intr_establish(sc, pcic_intr);
        if (sc->ih == NULL) {
                aprint_error_dev(self, "couldn't map interrupt\n");
                return;
        }
#endif

        /*
         * Defer configuration of children until ISA has had its chance
         * to use up whatever IO space and IRQs it wants. XXX This will
         * only work if ISA is attached to a pcib, AND the PCI probe finds
         * and defers the ISA attachment before this one.
         */
        config_defer(self, pcic_pci_callback);
        config_interrupts(self, pcic_isa_config_interrupts);
}

static void
pcic_pci_callback(device_t self)
{
        struct pcic_softc *sc = device_private(self);

        pcic_attach_sockets(sc);
}