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/*

 * QEMU Grackle PCI host (heathrow OldWorld PowerMac)

 *

 * Copyright (c) 2006-2007 Fabrice Bellard

 * Copyright (c) 2007 Jocelyn Mayer

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "hw/pci/pci_host.h"

#include "hw/ppc/mac.h"

#include "hw/pci/pci.h"

/* debug Grackle */

//#define DEBUG_GRACKLE

#ifdef DEBUG_GRACKLE

#define GRACKLE_DPRINTF(fmt, ...)                               \

    do { printf("GRACKLE: " fmt , ## __VA_ARGS__); } while (0)

#else

#define GRACKLE_DPRINTF(fmt, ...)

#endif

#define GRACKLE_PCI_HOST_BRIDGE(obj) \

    OBJECT_CHECK(GrackleState, (obj), TYPE_GRACKLE_PCI_HOST_BRIDGE)

typedef struct GrackleState {

    PCIHostState parent_obj;

    MemoryRegion pci_mmio;

    MemoryRegion pci_hole;

} GrackleState;

/* Don't know if this matches real hardware, but it agrees with OHW.  */

static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)

{

    return (irq_num + (pci_dev->devfn >> 3)) & 3;

}

static void pci_grackle_set_irq(void *opaque, int irq_num, int level)

{

    qemu_irq *pic = opaque;

    GRACKLE_DPRINTF("set_irq num %d level %d\n", irq_num, level);

    qemu_set_irq(pic[irq_num + 0x15], level);

}

PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic,

                         MemoryRegion *address_space_mem,

                         MemoryRegion *address_space_io)

{

    DeviceState *dev;

    SysBusDevice *s;

    PCIHostState *phb;

    GrackleState *d;

    dev = qdev_create(NULL, TYPE_GRACKLE_PCI_HOST_BRIDGE);

    qdev_init_nofail(dev);

    s = SYS_BUS_DEVICE(dev);

    phb = PCI_HOST_BRIDGE(dev);

    d = GRACKLE_PCI_HOST_BRIDGE(dev);

    memory_region_init(&d->pci_mmio, "pci-mmio", 0x100000000ULL);

    memory_region_init_alias(&d->pci_hole, "pci-hole", &d->pci_mmio,

                             0x80000000ULL, 0x7e000000ULL);

    memory_region_add_subregion(address_space_mem, 0x80000000ULL,

                                &d->pci_hole);

    phb->bus = pci_register_bus(dev, "pci",

                                pci_grackle_set_irq,

                                pci_grackle_map_irq,

                                pic,

                                &d->pci_mmio,

                                address_space_io,

                                0, 4, TYPE_PCI_BUS);

    pci_create_simple(phb->bus, 0, "grackle");

    sysbus_mmio_map(s, 0, base);

    sysbus_mmio_map(s, 1, base + 0x00200000);

    return phb->bus;

}

static int pci_grackle_init_device(SysBusDevice *dev)

{

    PCIHostState *phb;

    phb = PCI_HOST_BRIDGE(dev);

    memory_region_init_io(&phb->conf_mem, &pci_host_conf_le_ops,

                          dev, "pci-conf-idx", 0x1000);

    memory_region_init_io(&phb->data_mem, &pci_host_data_le_ops,

                          dev, "pci-data-idx", 0x1000);

    sysbus_init_mmio(dev, &phb->conf_mem);

    sysbus_init_mmio(dev, &phb->data_mem);

    return 0;

}

static int grackle_pci_host_init(PCIDevice *d)

{

    d->config[0x09] = 0x01;

    return 0;

}

static void grackle_pci_class_init(ObjectClass *klass, void *data)

{

    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);

    DeviceClass *dc = DEVICE_CLASS(klass);

    k->init      = grackle_pci_host_init;

    k->vendor_id = PCI_VENDOR_ID_MOTOROLA;

    k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106;

    k->revision  = 0x00;

    k->class_id  = PCI_CLASS_BRIDGE_HOST;

    dc->no_user = 1;

}

static const TypeInfo grackle_pci_info = {

    .name          = "grackle",

    .parent        = TYPE_PCI_DEVICE,

    .instance_size = sizeof(PCIDevice),

    .class_init = grackle_pci_class_init,

};

static void pci_grackle_class_init(ObjectClass *klass, void *data)

{

    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);

    DeviceClass *dc = DEVICE_CLASS(klass);

    k->init = pci_grackle_init_device;

    dc->no_user = 1;

}

static const TypeInfo grackle_pci_host_info = {

    .name          = TYPE_GRACKLE_PCI_HOST_BRIDGE,

    .parent        = TYPE_PCI_HOST_BRIDGE,

    .instance_size = sizeof(GrackleState),

    .class_init    = pci_grackle_class_init,

};

static void grackle_register_types(void)

{

    type_register_static(&grackle_pci_info);

    type_register_static(&grackle_pci_host_info);

}

type_init(grackle_register_types)