Archipelago » qemu

/*

 * ARM Versatile/PB PCI host controller

 *

 * Copyright (c) 2006-2009 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licensed under the LGPL.

 */

#include "sysbus.h"

#include "pci/pci.h"

#include "pci/pci_host.h"

#include "exec/address-spaces.h"

typedef struct {

    SysBusDevice busdev;

    qemu_irq irq[4];

    int realview;

    MemoryRegion mem_config;

    MemoryRegion mem_config2;

    MemoryRegion isa;

} PCIVPBState;

static inline uint32_t vpb_pci_config_addr(hwaddr addr)

{

    return addr & 0xffffff;

}

static void pci_vpb_config_write(void *opaque, hwaddr addr,

                                 uint64_t val, unsigned size)

{

    pci_data_write(opaque, vpb_pci_config_addr(addr), val, size);

}

static uint64_t pci_vpb_config_read(void *opaque, hwaddr addr,

                                    unsigned size)

{

    uint32_t val;

    val = pci_data_read(opaque, vpb_pci_config_addr(addr), size);

    return val;

}

static const MemoryRegionOps pci_vpb_config_ops = {

    .read = pci_vpb_config_read,

    .write = pci_vpb_config_write,

    .endianness = DEVICE_NATIVE_ENDIAN,

};

static int pci_vpb_map_irq(PCIDevice *d, int irq_num)

{

    return irq_num;

}

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

{

    qemu_irq *pic = opaque;

    qemu_set_irq(pic[irq_num], level);

}

static int pci_vpb_init(SysBusDevice *dev)

{

    PCIVPBState *s = FROM_SYSBUS(PCIVPBState, dev);

    PCIBus *bus;

    int i;

    for (i = 0; i < 4; i++) {

        sysbus_init_irq(dev, &s->irq[i]);

    }

    bus = pci_register_bus(&dev->qdev, "pci",

                           pci_vpb_set_irq, pci_vpb_map_irq, s->irq,

                           get_system_memory(), get_system_io(),

                           PCI_DEVFN(11, 0), 4);

    /* ??? Register memory space.  */

    /* Our memory regions are:

     * 0 : PCI self config window

     * 1 : PCI config window

     * 2 : PCI IO window (realview_pci only)

     */

    memory_region_init_io(&s->mem_config, &pci_vpb_config_ops, bus,

                          "pci-vpb-selfconfig", 0x1000000);

    sysbus_init_mmio(dev, &s->mem_config);

    memory_region_init_io(&s->mem_config2, &pci_vpb_config_ops, bus,

                          "pci-vpb-config", 0x1000000);

    sysbus_init_mmio(dev, &s->mem_config2);

    if (s->realview) {

        isa_mmio_setup(&s->isa, 0x0100000);

        sysbus_init_mmio(dev, &s->isa);

    }

    pci_create_simple(bus, -1, "versatile_pci_host");

    return 0;

}

static int pci_realview_init(SysBusDevice *dev)

{

    PCIVPBState *s = FROM_SYSBUS(PCIVPBState, dev);

    s->realview = 1;

    return pci_vpb_init(dev);

}

static int versatile_pci_host_init(PCIDevice *d)

{

    pci_set_word(d->config + PCI_STATUS,

                 PCI_STATUS_66MHZ | PCI_STATUS_DEVSEL_MEDIUM);

    pci_set_byte(d->config + PCI_LATENCY_TIMER, 0x10);

    return 0;

}

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

{

    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);

    k->init = versatile_pci_host_init;

    k->vendor_id = PCI_VENDOR_ID_XILINX;

    k->device_id = PCI_DEVICE_ID_XILINX_XC2VP30;

    k->class_id = PCI_CLASS_PROCESSOR_CO;

}

static TypeInfo versatile_pci_host_info = {

    .name          = "versatile_pci_host",

    .parent        = TYPE_PCI_DEVICE,

    .instance_size = sizeof(PCIDevice),

    .class_init    = versatile_pci_host_class_init,

};

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

{

    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);

    sdc->init = pci_vpb_init;

}

static TypeInfo pci_vpb_info = {

    .name          = "versatile_pci",

    .parent        = TYPE_SYS_BUS_DEVICE,

    .instance_size = sizeof(PCIVPBState),

    .class_init    = pci_vpb_class_init,

};

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

{

    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);

    sdc->init = pci_realview_init;

}

static TypeInfo pci_realview_info = {

    .name          = "realview_pci",

    .parent        = TYPE_SYS_BUS_DEVICE,

    .instance_size = sizeof(PCIVPBState),

    .class_init    = pci_realview_class_init,

};

static void versatile_pci_register_types(void)

{

    type_register_static(&pci_vpb_info);

    type_register_static(&pci_realview_info);

    type_register_static(&versatile_pci_host_info);

}

type_init(versatile_pci_register_types)