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/*

 * Intel XScale PXA255/270 PC Card and CompactFlash Interface.

 *

 * Copyright (c) 2006 Openedhand Ltd.

 * Written by Andrzej Zaborowski <balrog@zabor.org>

 *

 * This code is licensed under the GPLv2.

 *

 * Contributions after 2012-01-13 are licensed under the terms of the

 * GNU GPL, version 2 or (at your option) any later version.

 */

#include "hw/hw.h"

#include "hw/pcmcia.h"

#include "hw/arm/pxa.h"

struct PXA2xxPCMCIAState {

    PCMCIASocket slot;

    PCMCIACardState *card;

    MemoryRegion common_iomem;

    MemoryRegion attr_iomem;

    MemoryRegion iomem;

    qemu_irq irq;

    qemu_irq cd_irq;

};

static uint64_t pxa2xx_pcmcia_common_read(void *opaque,

                hwaddr offset, unsigned size)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (s->slot.attached) {

        return s->card->common_read(s->card->state, offset);

    }

    return 0;

}

static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset,

                                       uint64_t value, unsigned size)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (s->slot.attached) {

        s->card->common_write(s->card->state, offset, value);

    }

}

static uint64_t pxa2xx_pcmcia_attr_read(void *opaque,

                hwaddr offset, unsigned size)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (s->slot.attached) {

        return s->card->attr_read(s->card->state, offset);

    }

    return 0;

}

static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset,

                                     uint64_t value, unsigned size)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (s->slot.attached) {

        s->card->attr_write(s->card->state, offset, value);

    }

}

static uint64_t pxa2xx_pcmcia_io_read(void *opaque,

                hwaddr offset, unsigned size)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (s->slot.attached) {

        return s->card->io_read(s->card->state, offset);

    }

    return 0;

}

static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset,

                                   uint64_t value, unsigned size)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (s->slot.attached) {

        s->card->io_write(s->card->state, offset, value);

    }

}

static const MemoryRegionOps pxa2xx_pcmcia_common_ops = {

    .read = pxa2xx_pcmcia_common_read,

    .write = pxa2xx_pcmcia_common_write,

    .endianness = DEVICE_NATIVE_ENDIAN

};

static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = {

    .read = pxa2xx_pcmcia_attr_read,

    .write = pxa2xx_pcmcia_attr_write,

    .endianness = DEVICE_NATIVE_ENDIAN

};

static const MemoryRegionOps pxa2xx_pcmcia_io_ops = {

    .read = pxa2xx_pcmcia_io_read,

    .write = pxa2xx_pcmcia_io_write,

    .endianness = DEVICE_NATIVE_ENDIAN

};

static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (!s->irq)

        return;

    qemu_set_irq(s->irq, level);

}

PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem,

                                      hwaddr base)

{

    PXA2xxPCMCIAState *s;

    s = (PXA2xxPCMCIAState *)

            g_malloc0(sizeof(PXA2xxPCMCIAState));

    /* Socket I/O Memory Space */

    memory_region_init_io(&s->iomem, &pxa2xx_pcmcia_io_ops, s,

                          "pxa2xx-pcmcia-io", 0x04000000);

    memory_region_add_subregion(sysmem, base | 0x00000000,

                                &s->iomem);

    /* Then next 64 MB is reserved */

    /* Socket Attribute Memory Space */

    memory_region_init_io(&s->attr_iomem, &pxa2xx_pcmcia_attr_ops, s,

                          "pxa2xx-pcmcia-attribute", 0x04000000);

    memory_region_add_subregion(sysmem, base | 0x08000000,

                                &s->attr_iomem);

    /* Socket Common Memory Space */

    memory_region_init_io(&s->common_iomem, &pxa2xx_pcmcia_common_ops, s,

                          "pxa2xx-pcmcia-common", 0x04000000);

    memory_region_add_subregion(sysmem, base | 0x0c000000,

                                &s->common_iomem);

    if (base == 0x30000000)

        s->slot.slot_string = "PXA PC Card Socket 1";

    else

        s->slot.slot_string = "PXA PC Card Socket 0";

    s->slot.irq = qemu_allocate_irqs(pxa2xx_pcmcia_set_irq, s, 1)[0];

    pcmcia_socket_register(&s->slot);

    return s;

}

/* Insert a new card into a slot */

int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (s->slot.attached)

        return -EEXIST;

    if (s->cd_irq) {

        qemu_irq_raise(s->cd_irq);

    }

    s->card = card;

    s->slot.attached = 1;

    s->card->slot = &s->slot;

    s->card->attach(s->card->state);

    return 0;

}

/* Eject card from the slot */

int pxa2xx_pcmcia_dettach(void *opaque)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    if (!s->slot.attached)

        return -ENOENT;

    s->card->detach(s->card->state);

    s->card->slot = NULL;

    s->card = NULL;

    s->slot.attached = 0;

    if (s->irq)

        qemu_irq_lower(s->irq);

    if (s->cd_irq)

        qemu_irq_lower(s->cd_irq);

    return 0;

}

/* Who to notify on card events */

void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)

{

    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;

    s->irq = irq;

    s->cd_irq = cd_irq;

}