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/*
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 * Intel XScale PXA255/270 PC Card and CompactFlash Interface.
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 *
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 * Copyright (c) 2006 Openedhand Ltd.
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 * Written by Andrzej Zaborowski <balrog@zabor.org>
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 *
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 * This code is licensed under the GPLv2.
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 *
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 * Contributions after 2012-01-13 are licensed under the terms of the
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 * GNU GPL, version 2 or (at your option) any later version.
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 */
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#include "hw/hw.h"
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#include "hw/sysbus.h"
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#include "hw/pcmcia.h"
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#include "hw/arm/pxa.h"
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#define TYPE_PXA2XX_PCMCIA "pxa2xx-pcmcia"
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#define PXA2XX_PCMCIA(obj) \
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    OBJECT_CHECK(PXA2xxPCMCIAState, obj, TYPE_PXA2XX_PCMCIA)
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struct PXA2xxPCMCIAState {
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    SysBusDevice parent_obj;
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    PCMCIASocket slot;
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    MemoryRegion container_mem;
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    MemoryRegion common_iomem;
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    MemoryRegion attr_iomem;
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    MemoryRegion iomem;
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    qemu_irq irq;
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    qemu_irq cd_irq;
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    PCMCIACardState *card;
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};
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static uint64_t pxa2xx_pcmcia_common_read(void *opaque,
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                hwaddr offset, unsigned size)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (s->slot.attached) {
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        pcc = PCMCIA_CARD_GET_CLASS(s->card);
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        return pcc->common_read(s->card, offset);
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    }
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    return 0;
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}
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static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset,
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                                       uint64_t value, unsigned size)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (s->slot.attached) {
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        pcc = PCMCIA_CARD_GET_CLASS(s->card);
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        pcc->common_write(s->card, offset, value);
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    }
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}
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static uint64_t pxa2xx_pcmcia_attr_read(void *opaque,
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                hwaddr offset, unsigned size)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (s->slot.attached) {
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        pcc = PCMCIA_CARD_GET_CLASS(s->card);
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        return pcc->attr_read(s->card, offset);
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    }
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    return 0;
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}
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static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset,
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                                     uint64_t value, unsigned size)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (s->slot.attached) {
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        pcc = PCMCIA_CARD_GET_CLASS(s->card);
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        pcc->attr_write(s->card, offset, value);
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    }
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}
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static uint64_t pxa2xx_pcmcia_io_read(void *opaque,
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                hwaddr offset, unsigned size)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (s->slot.attached) {
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        pcc = PCMCIA_CARD_GET_CLASS(s->card);
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        return pcc->io_read(s->card, offset);
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    }
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    return 0;
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}
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static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset,
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                                   uint64_t value, unsigned size)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (s->slot.attached) {
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        pcc = PCMCIA_CARD_GET_CLASS(s->card);
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        pcc->io_write(s->card, offset, value);
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    }
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}
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static const MemoryRegionOps pxa2xx_pcmcia_common_ops = {
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    .read = pxa2xx_pcmcia_common_read,
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    .write = pxa2xx_pcmcia_common_write,
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    .endianness = DEVICE_NATIVE_ENDIAN
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};
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static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = {
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    .read = pxa2xx_pcmcia_attr_read,
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    .write = pxa2xx_pcmcia_attr_write,
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    .endianness = DEVICE_NATIVE_ENDIAN
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};
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static const MemoryRegionOps pxa2xx_pcmcia_io_ops = {
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    .read = pxa2xx_pcmcia_io_read,
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    .write = pxa2xx_pcmcia_io_write,
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    .endianness = DEVICE_NATIVE_ENDIAN
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};
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static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    if (!s->irq)
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        return;
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    qemu_set_irq(s->irq, level);
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}
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PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem,
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                                      hwaddr base)
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{
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    DeviceState *dev;
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    PXA2xxPCMCIAState *s;
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    dev = qdev_create(NULL, TYPE_PXA2XX_PCMCIA);
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    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
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    s = PXA2XX_PCMCIA(dev);
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    if (base == 0x30000000) {
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        s->slot.slot_string = "PXA PC Card Socket 1";
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    } else {
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        s->slot.slot_string = "PXA PC Card Socket 0";
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    }
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    qdev_init_nofail(dev);
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    return s;
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}
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static void pxa2xx_pcmcia_realize(DeviceState *dev, Error **errp)
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{
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    PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(dev);
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    pcmcia_socket_register(&s->slot);
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}
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static void pxa2xx_pcmcia_initfn(Object *obj)
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{
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    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
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    PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(obj);
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    memory_region_init(&s->container_mem, obj, "container", 0x10000000);
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    sysbus_init_mmio(sbd, &s->container_mem);
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    /* Socket I/O Memory Space */
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    memory_region_init_io(&s->iomem, NULL, &pxa2xx_pcmcia_io_ops, s,
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                          "pxa2xx-pcmcia-io", 0x04000000);
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    memory_region_add_subregion(&s->container_mem, 0x00000000,
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                                &s->iomem);
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    /* Then next 64 MB is reserved */
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    /* Socket Attribute Memory Space */
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    memory_region_init_io(&s->attr_iomem, NULL, &pxa2xx_pcmcia_attr_ops, s,
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                          "pxa2xx-pcmcia-attribute", 0x04000000);
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    memory_region_add_subregion(&s->container_mem, 0x08000000,
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                                &s->attr_iomem);
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    /* Socket Common Memory Space */
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    memory_region_init_io(&s->common_iomem, NULL, &pxa2xx_pcmcia_common_ops, s,
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                          "pxa2xx-pcmcia-common", 0x04000000);
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    memory_region_add_subregion(&s->container_mem, 0x0c000000,
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                                &s->common_iomem);
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    s->slot.irq = qemu_allocate_irqs(pxa2xx_pcmcia_set_irq, s, 1)[0];
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    object_property_add_link(obj, "card", TYPE_PCMCIA_CARD,
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                             (Object **)&s->card, NULL);
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}
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/* Insert a new card into a slot */
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int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (s->slot.attached) {
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        return -EEXIST;
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    }
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    if (s->cd_irq) {
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        qemu_irq_raise(s->cd_irq);
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    }
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    s->card = card;
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    pcc = PCMCIA_CARD_GET_CLASS(s->card);
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    s->slot.attached = true;
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    s->card->slot = &s->slot;
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    pcc->attach(s->card);
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    return 0;
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}
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/* Eject card from the slot */
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int pxa2xx_pcmcia_detach(void *opaque)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    PCMCIACardClass *pcc;
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    if (!s->slot.attached) {
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        return -ENOENT;
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    }
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    pcc = PCMCIA_CARD_GET_CLASS(s->card);
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    pcc->detach(s->card);
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    s->card->slot = NULL;
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    s->card = NULL;
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    s->slot.attached = false;
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    if (s->irq) {
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        qemu_irq_lower(s->irq);
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    }
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    if (s->cd_irq) {
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        qemu_irq_lower(s->cd_irq);
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    }
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    return 0;
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}
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/* Who to notify on card events */
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void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)
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{
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    PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
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    s->irq = irq;
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    s->cd_irq = cd_irq;
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}
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static void pxa2xx_pcmcia_class_init(ObjectClass *oc, void *data)
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{
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    DeviceClass *dc = DEVICE_CLASS(oc);
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    dc->realize = pxa2xx_pcmcia_realize;
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}
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static const TypeInfo pxa2xx_pcmcia_type_info = {
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    .name = TYPE_PXA2XX_PCMCIA,
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    .parent = TYPE_SYS_BUS_DEVICE,
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    .instance_size = sizeof(PXA2xxPCMCIAState),
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    .instance_init = pxa2xx_pcmcia_initfn,
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    .class_init = pxa2xx_pcmcia_class_init,
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};
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static void pxa2xx_pcmcia_register_types(void)
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{
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    type_register_static(&pxa2xx_pcmcia_type_info);
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}
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type_init(pxa2xx_pcmcia_register_types)