130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*
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* QEMU PIIX4 PCI Bridge Emulation
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "pc.h"
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#include "pci.h"
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#include "isa.h"
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#include "sysbus.h"
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PCIDevice *piix4_dev;
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typedef struct PIIX4State {
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PCIDevice dev;
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} PIIX4State;
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static void piix4_reset(void *opaque)
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{
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PIIX4State *d = opaque;
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uint8_t *pci_conf = d->dev.config;
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pci_conf[0x04] = 0x07; // master, memory and I/O
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pci_conf[0x05] = 0x00;
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pci_conf[0x06] = 0x00;
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pci_conf[0x07] = 0x02; // PCI_status_devsel_medium
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pci_conf[0x4c] = 0x4d;
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pci_conf[0x4e] = 0x03;
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pci_conf[0x4f] = 0x00;
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pci_conf[0x60] = 0x0a; // PCI A -> IRQ 10
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pci_conf[0x61] = 0x0a; // PCI B -> IRQ 10
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pci_conf[0x62] = 0x0b; // PCI C -> IRQ 11
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pci_conf[0x63] = 0x0b; // PCI D -> IRQ 11
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pci_conf[0x69] = 0x02;
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pci_conf[0x70] = 0x80;
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pci_conf[0x76] = 0x0c;
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pci_conf[0x77] = 0x0c;
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pci_conf[0x78] = 0x02;
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pci_conf[0x79] = 0x00;
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pci_conf[0x80] = 0x00;
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pci_conf[0x82] = 0x00;
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pci_conf[0xa0] = 0x08;
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pci_conf[0xa2] = 0x00;
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pci_conf[0xa3] = 0x00;
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pci_conf[0xa4] = 0x00;
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pci_conf[0xa5] = 0x00;
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pci_conf[0xa6] = 0x00;
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pci_conf[0xa7] = 0x00;
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pci_conf[0xa8] = 0x0f;
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pci_conf[0xaa] = 0x00;
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pci_conf[0xab] = 0x00;
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pci_conf[0xac] = 0x00;
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pci_conf[0xae] = 0x00;
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}
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static const VMStateDescription vmstate_piix4 = {
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.name = "PIIX4",
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.version_id = 2,
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.minimum_version_id = 2,
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.minimum_version_id_old = 2,
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.fields = (VMStateField[]) {
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VMSTATE_PCI_DEVICE(dev, PIIX4State),
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VMSTATE_END_OF_LIST()
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}
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};
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static int piix4_initfn(PCIDevice *dev)
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{
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PIIX4State *d = DO_UPCAST(PIIX4State, dev, dev);
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isa_bus_new(&d->dev.qdev, pci_address_space_io(dev));
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piix4_dev = &d->dev;
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qemu_register_reset(piix4_reset, d);
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return 0;
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}
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int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn)
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{
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PCIDevice *d;
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d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4");
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*isa_bus = DO_UPCAST(ISABus, qbus, qdev_get_child_bus(&d->qdev, "isa.0"));
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return d->devfn;
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}
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static void piix4_class_init(ObjectClass *klass, void *data)
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{
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PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
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k->no_hotplug = 1;
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k->init = piix4_initfn;
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k->vendor_id = PCI_VENDOR_ID_INTEL;
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k->device_id = PCI_DEVICE_ID_INTEL_82371AB_0;
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k->class_id = PCI_CLASS_BRIDGE_ISA;
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}
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static DeviceInfo piix4_info = {
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.name = "PIIX4",
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.desc = "ISA bridge",
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.size = sizeof(PIIX4State),
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.vmsd = &vmstate_piix4,
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.no_user = 1,
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.class_init = piix4_class_init,
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};
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static void piix4_register(void)
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{
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pci_qdev_register(&piix4_info);
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}
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device_init(piix4_register);
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