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 "dec.h"
  27#include "hw/sysbus.h"
  28#include "hw/pci/pci.h"
  29#include "hw/pci/pci_host.h"
  30#include "hw/pci/pci_bridge.h"
  31#include "hw/pci/pci_bus.h"
  32
  33/* debug DEC */
  34//#define DEBUG_DEC
  35
  36#ifdef DEBUG_DEC
  37#define DEC_DPRINTF(fmt, ...)                               \
  38    do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
  39#else
  40#define DEC_DPRINTF(fmt, ...)
  41#endif
  42
  43#define DEC_21154(obj) OBJECT_CHECK(DECState, (obj), TYPE_DEC_21154)
  44
  45typedef struct DECState {
  46    PCIHostState parent_obj;
  47} DECState;
  48
  49static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  50{
  51    return irq_num;
  52}
  53
  54static int dec_pci_bridge_initfn(PCIDevice *pci_dev)
  55{
  56    return pci_bridge_initfn(pci_dev, TYPE_PCI_BUS);
  57}
  58
  59static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data)
  60{
  61    DeviceClass *dc = DEVICE_CLASS(klass);
  62    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  63
  64    k->init = dec_pci_bridge_initfn;
  65    k->exit = pci_bridge_exitfn;
  66    k->vendor_id = PCI_VENDOR_ID_DEC;
  67    k->device_id = PCI_DEVICE_ID_DEC_21154;
  68    k->config_write = pci_bridge_write_config;
  69    k->is_bridge = 1;
  70    dc->desc = "DEC 21154 PCI-PCI bridge";
  71    dc->reset = pci_bridge_reset;
  72    dc->vmsd = &vmstate_pci_device;
  73}
  74
  75static const TypeInfo dec_21154_pci_bridge_info = {
  76    .name          = "dec-21154-p2p-bridge",
  77    .parent        = TYPE_PCI_BRIDGE,
  78    .instance_size = sizeof(PCIBridge),
  79    .class_init    = dec_21154_pci_bridge_class_init,
  80};
  81
  82PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  83{
  84    PCIDevice *dev;
  85    PCIBridge *br;
  86
  87    dev = pci_create_multifunction(parent_bus, devfn, false,
  88                                   "dec-21154-p2p-bridge");
  89    br = PCI_BRIDGE(dev);
  90    pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
  91    qdev_init_nofail(&dev->qdev);
  92    return pci_bridge_get_sec_bus(br);
  93}
  94
  95static int pci_dec_21154_device_init(SysBusDevice *dev)
  96{
  97    PCIHostState *phb;
  98
  99    phb = PCI_HOST_BRIDGE(dev);
 100
 101    memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 102                          dev, "pci-conf-idx", 0x1000);
 103    memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 104                          dev, "pci-data-idx", 0x1000);
 105    sysbus_init_mmio(dev, &phb->conf_mem);
 106    sysbus_init_mmio(dev, &phb->data_mem);
 107    return 0;
 108}
 109
 110static int dec_21154_pci_host_init(PCIDevice *d)
 111{
 112    /* PCI2PCI bridge same values as PearPC - check this */
 113    return 0;
 114}
 115
 116static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
 117{
 118    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 119    DeviceClass *dc = DEVICE_CLASS(klass);
 120
 121    k->init = dec_21154_pci_host_init;
 122    k->vendor_id = PCI_VENDOR_ID_DEC;
 123    k->device_id = PCI_DEVICE_ID_DEC_21154;
 124    k->revision = 0x02;
 125    k->class_id = PCI_CLASS_BRIDGE_PCI;
 126    k->is_bridge = 1;
 127    /*
 128     * PCI-facing part of the host bridge, not usable without the
 129     * host-facing part, which can't be device_add'ed, yet.
 130     */
 131    dc->cannot_instantiate_with_device_add_yet = true;
 132}
 133
 134static const TypeInfo dec_21154_pci_host_info = {
 135    .name          = "dec-21154",
 136    .parent        = TYPE_PCI_DEVICE,
 137    .instance_size = sizeof(PCIDevice),
 138    .class_init    = dec_21154_pci_host_class_init,
 139};
 140
 141static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
 142{
 143    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
 144
 145    sdc->init = pci_dec_21154_device_init;
 146}
 147
 148static const TypeInfo pci_dec_21154_device_info = {
 149    .name          = TYPE_DEC_21154,
 150    .parent        = TYPE_PCI_HOST_BRIDGE,
 151    .instance_size = sizeof(DECState),
 152    .class_init    = pci_dec_21154_device_class_init,
 153};
 154
 155static void dec_register_types(void)
 156{
 157    type_register_static(&pci_dec_21154_device_info);
 158    type_register_static(&dec_21154_pci_host_info);
 159    type_register_static(&dec_21154_pci_bridge_info);
 160}
 161
 162type_init(dec_register_types)
 163