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 "hw/pci/pci.h"
  30#include "hw/pci/pci_host.h"
  31#include "hw/pci/pci_bridge.h"
  32#include "hw/pci/pci_bus.h"
  33
  34/* debug DEC */
  35//#define DEBUG_DEC
  36
  37#ifdef DEBUG_DEC
  38#define DEC_DPRINTF(fmt, ...)                               \
  39    do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
  40#else
  41#define DEC_DPRINTF(fmt, ...)
  42#endif
  43
  44#define DEC_21154(obj) OBJECT_CHECK(DECState, (obj), TYPE_DEC_21154)
  45
  46typedef struct DECState {
  47    PCIHostState parent_obj;
  48} DECState;
  49
  50static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  51{
  52    return irq_num;
  53}
  54
  55static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp)
  56{
  57    pci_bridge_initfn(pci_dev, TYPE_PCI_BUS);
  58}
  59
  60static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data)
  61{
  62    DeviceClass *dc = DEVICE_CLASS(klass);
  63    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  64
  65    set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
  66    k->realize = dec_pci_bridge_realize;
  67    k->exit = pci_bridge_exitfn;
  68    k->vendor_id = PCI_VENDOR_ID_DEC;
  69    k->device_id = PCI_DEVICE_ID_DEC_21154;
  70    k->config_write = pci_bridge_write_config;
  71    k->is_bridge = 1;
  72    dc->desc = "DEC 21154 PCI-PCI bridge";
  73    dc->reset = pci_bridge_reset;
  74    dc->vmsd = &vmstate_pci_device;
  75}
  76
  77static const TypeInfo dec_21154_pci_bridge_info = {
  78    .name          = "dec-21154-p2p-bridge",
  79    .parent        = TYPE_PCI_BRIDGE,
  80    .instance_size = sizeof(PCIBridge),
  81    .class_init    = dec_21154_pci_bridge_class_init,
  82    .interfaces = (InterfaceInfo[]) {
  83        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
  84        { },
  85    },
  86};
  87
  88PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  89{
  90    PCIDevice *dev;
  91    PCIBridge *br;
  92
  93    dev = pci_create_multifunction(parent_bus, devfn, false,
  94                                   "dec-21154-p2p-bridge");
  95    br = PCI_BRIDGE(dev);
  96    pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
  97    qdev_init_nofail(&dev->qdev);
  98    return pci_bridge_get_sec_bus(br);
  99}
 100
 101static int pci_dec_21154_device_init(SysBusDevice *dev)
 102{
 103    PCIHostState *phb;
 104
 105    phb = PCI_HOST_BRIDGE(dev);
 106
 107    memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 108                          dev, "pci-conf-idx", 0x1000);
 109    memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 110                          dev, "pci-data-idx", 0x1000);
 111    sysbus_init_mmio(dev, &phb->conf_mem);
 112    sysbus_init_mmio(dev, &phb->data_mem);
 113    return 0;
 114}
 115
 116static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp)
 117{
 118    /* PCI2PCI bridge same values as PearPC - check this */
 119}
 120
 121static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
 122{
 123    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 124    DeviceClass *dc = DEVICE_CLASS(klass);
 125
 126    set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 127    k->realize = dec_21154_pci_host_realize;
 128    k->vendor_id = PCI_VENDOR_ID_DEC;
 129    k->device_id = PCI_DEVICE_ID_DEC_21154;
 130    k->revision = 0x02;
 131    k->class_id = PCI_CLASS_BRIDGE_PCI;
 132    k->is_bridge = 1;
 133    /*
 134     * PCI-facing part of the host bridge, not usable without the
 135     * host-facing part, which can't be device_add'ed, yet.
 136     */
 137    dc->user_creatable = false;
 138}
 139
 140static const TypeInfo dec_21154_pci_host_info = {
 141    .name          = "dec-21154",
 142    .parent        = TYPE_PCI_DEVICE,
 143    .instance_size = sizeof(PCIDevice),
 144    .class_init    = dec_21154_pci_host_class_init,
 145    .interfaces = (InterfaceInfo[]) {
 146        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 147        { },
 148    },
 149};
 150
 151static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
 152{
 153    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
 154
 155    sdc->init = pci_dec_21154_device_init;
 156}
 157
 158static const TypeInfo pci_dec_21154_device_info = {
 159    .name          = TYPE_DEC_21154,
 160    .parent        = TYPE_PCI_HOST_BRIDGE,
 161    .instance_size = sizeof(DECState),
 162    .class_init    = pci_dec_21154_device_class_init,
 163};
 164
 165static void dec_register_types(void)
 166{
 167    type_register_static(&pci_dec_21154_device_info);
 168    type_register_static(&dec_21154_pci_host_info);
 169    type_register_static(&dec_21154_pci_bridge_info);
 170}
 171
 172type_init(dec_register_types)
 173