Archipelago » qemu

/*

 * QEMU PIIX4 PCI Bridge Emulation

 *

 * Copyright (c) 2006 Fabrice Bellard

 *

 * 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.h"

#include "pc.h"

#include "pci.h"

#include "isa.h"

#include "sysbus.h"

PCIDevice *piix4_dev;

static void piix4_reset(void *opaque)

{

    PCIDevice *d = opaque;

    uint8_t *pci_conf = d->config;

    pci_conf[0x04] = 0x07; // master, memory and I/O

    pci_conf[0x05] = 0x00;

    pci_conf[0x06] = 0x00;

    pci_conf[0x07] = 0x02; // PCI_status_devsel_medium

    pci_conf[0x4c] = 0x4d;

    pci_conf[0x4e] = 0x03;

    pci_conf[0x4f] = 0x00;

    pci_conf[0x60] = 0x0a; // PCI A -> IRQ 10

    pci_conf[0x61] = 0x0a; // PCI B -> IRQ 10

    pci_conf[0x62] = 0x0b; // PCI C -> IRQ 11

    pci_conf[0x63] = 0x0b; // PCI D -> IRQ 11

    pci_conf[0x69] = 0x02;

    pci_conf[0x70] = 0x80;

    pci_conf[0x76] = 0x0c;

    pci_conf[0x77] = 0x0c;

    pci_conf[0x78] = 0x02;

    pci_conf[0x79] = 0x00;

    pci_conf[0x80] = 0x00;

    pci_conf[0x82] = 0x00;

    pci_conf[0xa0] = 0x08;

    pci_conf[0xa2] = 0x00;

    pci_conf[0xa3] = 0x00;

    pci_conf[0xa4] = 0x00;

    pci_conf[0xa5] = 0x00;

    pci_conf[0xa6] = 0x00;

    pci_conf[0xa7] = 0x00;

    pci_conf[0xa8] = 0x0f;

    pci_conf[0xaa] = 0x00;

    pci_conf[0xab] = 0x00;

    pci_conf[0xac] = 0x00;

    pci_conf[0xae] = 0x00;

}

static void piix_save(QEMUFile* f, void *opaque)

{

    PCIDevice *d = opaque;

    pci_device_save(d, f);

}

static int piix_load(QEMUFile* f, void *opaque, int version_id)

{

    PCIDevice *d = opaque;

    if (version_id != 2)

        return -EINVAL;

    return pci_device_load(d, f);

}

static int piix4_initfn(PCIDevice *d)

{

    uint8_t *pci_conf;

    isa_bus_new(&d->qdev);

    register_savevm(&d->qdev, "PIIX4", 0, 2, piix_save, piix_load, d);

    pci_conf = d->config;

    pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);

    pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB_0); // 82371AB/EB/MB PIIX4 PCI-to-ISA bridge

    pci_config_set_class(pci_conf, PCI_CLASS_BRIDGE_ISA);

    piix4_dev = d;

    qemu_register_reset(piix4_reset, d);

    return 0;

}

int piix4_init(PCIBus *bus, int devfn)

{

    PCIDevice *d;

    d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4");

    return d->devfn;

}

static PCIDeviceInfo piix4_info[] = {

    {

        .qdev.name    = "PIIX4",

        .qdev.desc    = "ISA bridge",

        .qdev.size    = sizeof(PCIDevice),

        .qdev.no_user = 1,

        .init         = piix4_initfn,

    },{

        /* end of list */

    }

};

static void piix4_register(void)

{

    pci_qdev_register_many(piix4_info);

}

device_init(piix4_register);