LXR qemu/hw/isa/piix4.c

   1/*
   2 * QEMU PIIX4 PCI Bridge Emulation
   3 *
   4 * Copyright (c) 2006 Fabrice Bellard
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24
  25#include "hw/hw.h"
  26#include "hw/i386/pc.h"
  27#include "hw/pci/pci.h"
  28#include "hw/isa/isa.h"
  29#include "hw/sysbus.h"
  30
  31PCIDevice *piix4_dev;
  32
  33typedef struct PIIX4State {
  34    PCIDevice dev;
  35} PIIX4State;
  36
  37static void piix4_reset(void *opaque)
  38{
  39    PIIX4State *d = opaque;
  40    uint8_t *pci_conf = d->dev.config;
  41
  42    pci_conf[0x04] = 0x07; // master, memory and I/O
  43    pci_conf[0x05] = 0x00;
  44    pci_conf[0x06] = 0x00;
  45    pci_conf[0x07] = 0x02; // PCI_status_devsel_medium
  46    pci_conf[0x4c] = 0x4d;
  47    pci_conf[0x4e] = 0x03;
  48    pci_conf[0x4f] = 0x00;
  49    pci_conf[0x60] = 0x0a; // PCI A -> IRQ 10
  50    pci_conf[0x61] = 0x0a; // PCI B -> IRQ 10
  51    pci_conf[0x62] = 0x0b; // PCI C -> IRQ 11
  52    pci_conf[0x63] = 0x0b; // PCI D -> IRQ 11
  53    pci_conf[0x69] = 0x02;
  54    pci_conf[0x70] = 0x80;
  55    pci_conf[0x76] = 0x0c;
  56    pci_conf[0x77] = 0x0c;
  57    pci_conf[0x78] = 0x02;
  58    pci_conf[0x79] = 0x00;
  59    pci_conf[0x80] = 0x00;
  60    pci_conf[0x82] = 0x00;
  61    pci_conf[0xa0] = 0x08;
  62    pci_conf[0xa2] = 0x00;
  63    pci_conf[0xa3] = 0x00;
  64    pci_conf[0xa4] = 0x00;
  65    pci_conf[0xa5] = 0x00;
  66    pci_conf[0xa6] = 0x00;
  67    pci_conf[0xa7] = 0x00;
  68    pci_conf[0xa8] = 0x0f;
  69    pci_conf[0xaa] = 0x00;
  70    pci_conf[0xab] = 0x00;
  71    pci_conf[0xac] = 0x00;
  72    pci_conf[0xae] = 0x00;
  73}
  74
  75static const VMStateDescription vmstate_piix4 = {
  76    .name = "PIIX4",
  77    .version_id = 2,
  78    .minimum_version_id = 2,
  79    .minimum_version_id_old = 2,
  80    .fields      = (VMStateField[]) {
  81        VMSTATE_PCI_DEVICE(dev, PIIX4State),
  82        VMSTATE_END_OF_LIST()
  83    }
  84};
  85
  86static int piix4_initfn(PCIDevice *dev)
  87{
  88    PIIX4State *d = DO_UPCAST(PIIX4State, dev, dev);
  89
  90    isa_bus_new(&d->dev.qdev, pci_address_space_io(dev));
  91    piix4_dev = &d->dev;
  92    qemu_register_reset(piix4_reset, d);
  93    return 0;
  94}
  95
  96int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn)
  97{
  98    PCIDevice *d;
  99
 100    d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4");
 101    *isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0"));
 102    return d->devfn;
 103}
 104
 105static void piix4_class_init(ObjectClass *klass, void *data)
 106{
 107    DeviceClass *dc = DEVICE_CLASS(klass);
 108    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 109
 110    k->no_hotplug = 1;
 111    k->init = piix4_initfn;
 112    k->vendor_id = PCI_VENDOR_ID_INTEL;
 113    k->device_id = PCI_DEVICE_ID_INTEL_82371AB_0;
 114    k->class_id = PCI_CLASS_BRIDGE_ISA;
 115    dc->desc = "ISA bridge";
 116    dc->no_user = 1;
 117    dc->vmsd = &vmstate_piix4;
 118}
 119
 120static const TypeInfo piix4_info = {
 121    .name          = "PIIX4",
 122    .parent        = TYPE_PCI_DEVICE,
 123    .instance_size = sizeof(PIIX4State),
 124    .class_init    = piix4_class_init,
 125};
 126
 127static void piix4_register_types(void)
 128{
 129    type_register_static(&piix4_info);
 130}
 131
 132type_init(piix4_register_types)
 133