diff options
Diffstat (limited to 'src/hw/isa/piix4.c')
| -rw-r--r-- | src/hw/isa/piix4.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/hw/isa/piix4.c b/src/hw/isa/piix4.c new file mode 100644 index 0000000..2c59e91 --- /dev/null +++ b/src/hw/isa/piix4.c @@ -0,0 +1,139 @@ +/* + * 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/hw.h" +#include "hw/i386/pc.h" +#include "hw/pci/pci.h" +#include "hw/isa/isa.h" +#include "hw/sysbus.h" + +PCIDevice *piix4_dev; + +typedef struct PIIX4State { + PCIDevice dev; +} PIIX4State; + +#define TYPE_PIIX4_PCI_DEVICE "PIIX4" +#define PIIX4_PCI_DEVICE(obj) \ + OBJECT_CHECK(PIIX4State, (obj), TYPE_PIIX4_PCI_DEVICE) + +static void piix4_reset(void *opaque) +{ + PIIX4State *d = opaque; + uint8_t *pci_conf = d->dev.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 const VMStateDescription vmstate_piix4 = { + .name = "PIIX4", + .version_id = 2, + .minimum_version_id = 2, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(dev, PIIX4State), + VMSTATE_END_OF_LIST() + } +}; + +static void piix4_realize(PCIDevice *dev, Error **errp) +{ + PIIX4State *d = PIIX4_PCI_DEVICE(dev); + + isa_bus_new(DEVICE(d), pci_address_space(dev), + pci_address_space_io(dev)); + piix4_dev = &d->dev; + qemu_register_reset(piix4_reset, d); +} + +int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn) +{ + PCIDevice *d; + + d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4"); + *isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0")); + return d->devfn; +} + +static void piix4_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = piix4_realize; + k->vendor_id = PCI_VENDOR_ID_INTEL; + k->device_id = PCI_DEVICE_ID_INTEL_82371AB_0; + k->class_id = PCI_CLASS_BRIDGE_ISA; + dc->desc = "ISA bridge"; + dc->vmsd = &vmstate_piix4; + /* + * Reason: part of PIIX4 southbridge, needs to be wired up, + * e.g. by mips_malta_init() + */ + dc->cannot_instantiate_with_device_add_yet = true; + dc->hotpluggable = false; +} + +static const TypeInfo piix4_info = { + .name = TYPE_PIIX4_PCI_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PIIX4State), + .class_init = piix4_class_init, +}; + +static void piix4_register_types(void) +{ + type_register_static(&piix4_info); +} + +type_init(piix4_register_types) |
