LXR qemu/hw/pci-bridge/dec.c

   1/*
   2 * QEMU DEC 21154 PCI bridge
   3 *
   4 * Copyright (c) 2006-2007 Fabrice Bellard
   5 * Copyright (c) 2007 Jocelyn Mayer
   6 *
   7 * Permission is hereby granted, free of charge, to any person obtaining a copy
   8 * of this software and associated documentation files (the "Software"), to deal
   9 * in the Software without restriction, including without limitation the rights
  10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 * copies of the Software, and to permit persons to whom the Software is
  12 * furnished to do so, subject to the following conditions:
  13 *
  14 * The above copyright notice and this permission notice shall be included in
  15 * all copies or substantial portions of the Software.
  16 *
  17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 * THE SOFTWARE.
  24 */
  25
  26#include "qemu/osdep.h"
  27#include "dec.h"
  28#include "hw/sysbus.h"
  29#include "qapi/error.h"
  30#include "qemu/module.h"
  31#include "hw/pci/pci.h"
  32#include "hw/pci/pci_host.h"
  33#include "hw/pci/pci_bridge.h"
  34#include "hw/pci/pci_bus.h"
  35#include "qom/object.h"
  36
  37OBJECT_DECLARE_SIMPLE_TYPE(DECState, DEC_21154)
  38
  39struct DECState {
  40    PCIHostState parent_obj;
  41};
  42
  43static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  44{
  45    return irq_num;
  46}
  47
  48static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp)
  49{
  50    pci_bridge_initfn(pci_dev, TYPE_PCI_BUS);
  51}
  52
  53static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data)
  54{
  55    DeviceClass *dc = DEVICE_CLASS(klass);
  56    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  57
  58    set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
  59    k->realize = dec_pci_bridge_realize;
  60    k->exit = pci_bridge_exitfn;
  61    k->vendor_id = PCI_VENDOR_ID_DEC;
  62    k->device_id = PCI_DEVICE_ID_DEC_21154;
  63    k->config_write = pci_bridge_write_config;
  64    k->is_bridge = true;
  65    dc->desc = "DEC 21154 PCI-PCI bridge";
  66    dc->reset = pci_bridge_reset;
  67    dc->vmsd = &vmstate_pci_device;
  68}
  69
  70static const TypeInfo dec_21154_pci_bridge_info = {
  71    .name          = "dec-21154-p2p-bridge",
  72    .parent        = TYPE_PCI_BRIDGE,
  73    .instance_size = sizeof(PCIBridge),
  74    .class_init    = dec_21154_pci_bridge_class_init,
  75    .interfaces = (InterfaceInfo[]) {
  76        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
  77        { },
  78    },
  79};
  80
  81PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  82{
  83    PCIDevice *dev;
  84    PCIBridge *br;
  85
  86    dev = pci_new_multifunction(devfn, false, "dec-21154-p2p-bridge");
  87    br = PCI_BRIDGE(dev);
  88    pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
  89    pci_realize_and_unref(dev, parent_bus, &error_fatal);
  90    return pci_bridge_get_sec_bus(br);
  91}
  92
  93static void pci_dec_21154_device_realize(DeviceState *dev, Error **errp)
  94{
  95    PCIHostState *phb;
  96    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
  97
  98    phb = PCI_HOST_BRIDGE(dev);
  99
 100    memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 101                          dev, "pci-conf-idx", 0x1000);
 102    memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 103                          dev, "pci-data-idx", 0x1000);
 104    sysbus_init_mmio(sbd, &phb->conf_mem);
 105    sysbus_init_mmio(sbd, &phb->data_mem);
 106}
 107
 108static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp)
 109{
 110    /* PCI2PCI bridge same values as PearPC - check this */
 111}
 112
 113static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
 114{
 115    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 116    DeviceClass *dc = DEVICE_CLASS(klass);
 117
 118    set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 119    k->realize = dec_21154_pci_host_realize;
 120    k->vendor_id = PCI_VENDOR_ID_DEC;
 121    k->device_id = PCI_DEVICE_ID_DEC_21154;
 122    k->revision = 0x02;
 123    k->class_id = PCI_CLASS_BRIDGE_PCI;
 124    k->is_bridge = true;
 125    /*
 126     * PCI-facing part of the host bridge, not usable without the
 127     * host-facing part, which can't be device_add'ed, yet.
 128     */
 129    dc->user_creatable = false;
 130}
 131
 132static const TypeInfo dec_21154_pci_host_info = {
 133    .name          = "dec-21154",
 134    .parent        = TYPE_PCI_DEVICE,
 135    .instance_size = sizeof(PCIDevice),
 136    .class_init    = dec_21154_pci_host_class_init,
 137    .interfaces = (InterfaceInfo[]) {
 138        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 139        { },
 140    },
 141};
 142
 143static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
 144{
 145    DeviceClass *dc = DEVICE_CLASS(klass);
 146
 147    dc->realize = pci_dec_21154_device_realize;
 148}
 149
 150static const TypeInfo pci_dec_21154_device_info = {
 151    .name          = TYPE_DEC_21154,
 152    .parent        = TYPE_PCI_HOST_BRIDGE,
 153    .instance_size = sizeof(DECState),
 154    .class_init    = pci_dec_21154_device_class_init,
 155};
 156
 157static void dec_register_types(void)
 158{
 159    type_register_static(&pci_dec_21154_device_info);
 160    type_register_static(&dec_21154_pci_host_info);
 161    type_register_static(&dec_21154_pci_bridge_info);
 162}
 163
 164type_init(dec_register_types)
 165