LXR qemu/hw/i82801b11.c

   1/*
   2 * Copyright (c) 2006 Fabrice Bellard
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a copy
   5 * of this software and associated documentation files (the "Software"), to deal
   6 * in the Software without restriction, including without limitation the rights
   7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8 * copies of the Software, and to permit persons to whom the Software is
   9 * furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  20 * THE SOFTWARE.
  21 */
  22/*
  23 * QEMU i82801b11 dmi-to-pci Bridge Emulation
  24 *
  25 *  Copyright (c) 2009, 2010, 2011
  26 *                Isaku Yamahata <yamahata at valinux co jp>
  27 *                VA Linux Systems Japan K.K.
  28 *  Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
  29 *
  30 * This library is free software; you can redistribute it and/or
  31 * modify it under the terms of the GNU Lesser General Public
  32 * License as published by the Free Software Foundation; either
  33 * version 2 of the License, or (at your option) any later version.
  34 *
  35 * This library is distributed in the hope that it will be useful,
  36 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  37 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  38 * Lesser General Public License for more details.
  39 *
  40 * You should have received a copy of the GNU Lesser General Public
  41 * License along with this library; if not, see <http://www.gnu.org/licenses/>
  42 */
  43
  44#include "pci.h"
  45#include "ich9.h"
  46
  47
  48/*****************************************************************************/
  49/* ICH9 DMI-to-PCI bridge */
  50#define I82801ba_SSVID_OFFSET   0x50
  51#define I82801ba_SSVID_SVID     0
  52#define I82801ba_SSVID_SSID     0
  53
  54typedef struct I82801b11Bridge {
  55    PCIBridge br;
  56} I82801b11Bridge;
  57
  58static int i82801b11_bridge_initfn(PCIDevice *d)
  59{
  60    int rc;
  61
  62    rc = pci_bridge_initfn(d);
  63    if (rc < 0) {
  64        return rc;
  65    }
  66
  67    rc = pci_bridge_ssvid_init(d, I82801ba_SSVID_OFFSET,
  68                               I82801ba_SSVID_SVID, I82801ba_SSVID_SSID);
  69    if (rc < 0) {
  70        goto err_bridge;
  71    }
  72    pci_config_set_prog_interface(d->config, PCI_CLASS_BRDIGE_PCI_INF_SUB);
  73    return 0;
  74
  75err_bridge:
  76    pci_bridge_exitfn(d);
  77
  78    return rc;
  79}
  80
  81static void i82801b11_bridge_class_init(ObjectClass *klass, void *data)
  82{
  83    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  84
  85    k->is_bridge = 1;
  86    k->vendor_id = PCI_VENDOR_ID_INTEL;
  87    k->device_id = PCI_DEVICE_ID_INTEL_82801BA_11;
  88    k->revision = ICH9_D2P_A2_REVISION;
  89    k->init = i82801b11_bridge_initfn;
  90}
  91
  92static const TypeInfo i82801b11_bridge_info = {
  93    .name          = "i82801b11-bridge",
  94    .parent        = TYPE_PCI_DEVICE,
  95    .instance_size = sizeof(I82801b11Bridge),
  96    .class_init    = i82801b11_bridge_class_init,
  97};
  98
  99PCIBus *ich9_d2pbr_init(PCIBus *bus, int devfn, int sec_bus)
 100{
 101    PCIDevice *d;
 102    PCIBridge *br;
 103    char buf[16];
 104    DeviceState *qdev;
 105
 106    d = pci_create_multifunction(bus, devfn, true, "i82801b11-bridge");
 107    if (!d) {
 108        return NULL;
 109    }
 110    br = DO_UPCAST(PCIBridge, dev, d);
 111    qdev = &br->dev.qdev;
 112
 113    snprintf(buf, sizeof(buf), "pci.%d", sec_bus);
 114    pci_bridge_map_irq(br, buf, pci_swizzle_map_irq_fn);
 115    qdev_init_nofail(qdev);
 116
 117    return pci_bridge_get_sec_bus(br);
 118}
 119
 120static void d2pbr_register(void)
 121{
 122    type_register_static(&i82801b11_bridge_info);
 123}
 124
 125type_init(d2pbr_register);
 126