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/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
  54 typedef struct I82801b11Bridge {
  55     PCIBridge br;
  56 } I82801b11Bridge;
  57
  58 static 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
  75 err_bridge:
  76     pci_bridge_exitfn(d);
  77
  78     return rc;
  79 }
  80
  81 static 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
  92 static 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
  99 PCIBus *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
 120 static void d2pbr_register(void)
 121 {
 122     type_register_static(&i82801b11_bridge_info);
 123 }
 124
 125 type_init(d2pbr_register);