hw/pci-bridge/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 "qemu/osdep.h"
  45 #include "hw/pci/pci.h"
  46 #include "migration/vmstate.h"
  47 #include "qemu/module.h"
  48 #include "hw/i386/ich9.h"
  49
  50 /*****************************************************************************/
  51 /* ICH9 DMI-to-PCI bridge */
  52 #define I82801ba_SSVID_OFFSET   0x50
  53 #define I82801ba_SSVID_SVID     0
  54 #define I82801ba_SSVID_SSID     0
  55
  56 typedef struct I82801b11Bridge {
  57     /*< private >*/
  58     PCIBridge parent_obj;
  59     /*< public >*/
  60 } I82801b11Bridge;
  61
  62 static void i82801b11_bridge_realize(PCIDevice *d, Error **errp)
  63 {
  64     int rc;
  65
  66     pci_bridge_initfn(d, TYPE_PCI_BUS);
  67
  68     rc = pci_bridge_ssvid_init(d, I82801ba_SSVID_OFFSET,
  69                                I82801ba_SSVID_SVID, I82801ba_SSVID_SSID,
  70                                errp);
  71     if (rc < 0) {
  72         goto err_bridge;
  73     }
  74     pci_config_set_prog_interface(d->config, PCI_CLASS_BRIDGE_PCI_INF_SUB);
  75     return;
  76
  77 err_bridge:
  78     pci_bridge_exitfn(d);
  79 }
  80
  81 static const VMStateDescription i82801b11_bridge_dev_vmstate = {
  82     .name = "i82801b11_bridge",
  83     .priority = MIG_PRI_PCI_BUS,
  84     .fields = (VMStateField[]) {
  85         VMSTATE_PCI_DEVICE(parent_obj, PCIBridge),
  86         VMSTATE_END_OF_LIST()
  87     }
  88 };
  89
  90 static void i82801b11_bridge_class_init(ObjectClass *klass, void *data)
  91 {
  92     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  93     DeviceClass *dc = DEVICE_CLASS(klass);
  94
  95     k->is_bridge = true;
  96     k->vendor_id = PCI_VENDOR_ID_INTEL;
  97     k->device_id = PCI_DEVICE_ID_INTEL_82801BA_11;
  98     k->revision = ICH9_D2P_A2_REVISION;
  99     k->realize = i82801b11_bridge_realize;
 100     k->config_write = pci_bridge_write_config;
 101     dc->vmsd = &i82801b11_bridge_dev_vmstate;
 102     dc->reset = pci_bridge_reset;
 103     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 104 }
 105
 106 static const TypeInfo i82801b11_bridge_info = {
 107     .name          = "i82801b11-bridge",
 108     .parent        = TYPE_PCI_BRIDGE,
 109     .instance_size = sizeof(I82801b11Bridge),
 110     .class_init    = i82801b11_bridge_class_init,
 111     .interfaces = (InterfaceInfo[]) {
 112         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 113         { },
 114     },
 115 };
 116
 117 static void d2pbr_register(void)
 118 {
 119     type_register_static(&i82801b11_bridge_info);
 120 }
 121
 122 type_init(d2pbr_register);