xref: /openbmc/qemu/hw/pci-bridge/i82801b11.c (revision fee5b753)
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 "hw/i386/ich9.h"
47 
48 
49 /*****************************************************************************/
50 /* ICH9 DMI-to-PCI bridge */
51 #define I82801ba_SSVID_OFFSET   0x50
52 #define I82801ba_SSVID_SVID     0
53 #define I82801ba_SSVID_SSID     0
54 
55 typedef struct I82801b11Bridge {
56     /*< private >*/
57     PCIBridge parent_obj;
58     /*< public >*/
59 } I82801b11Bridge;
60 
61 static int i82801b11_bridge_initfn(PCIDevice *d)
62 {
63     int rc;
64 
65     pci_bridge_initfn(d, TYPE_PCI_BUS);
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_BRIDGE_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     DeviceClass *dc = DEVICE_CLASS(klass);
85 
86     k->is_bridge = 1;
87     k->vendor_id = PCI_VENDOR_ID_INTEL;
88     k->device_id = PCI_DEVICE_ID_INTEL_82801BA_11;
89     k->revision = ICH9_D2P_A2_REVISION;
90     k->init = i82801b11_bridge_initfn;
91     k->config_write = pci_bridge_write_config;
92     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
93 }
94 
95 static const TypeInfo i82801b11_bridge_info = {
96     .name          = "i82801b11-bridge",
97     .parent        = TYPE_PCI_BRIDGE,
98     .instance_size = sizeof(I82801b11Bridge),
99     .class_init    = i82801b11_bridge_class_init,
100 };
101 
102 static void d2pbr_register(void)
103 {
104     type_register_static(&i82801b11_bridge_info);
105 }
106 
107 type_init(d2pbr_register);
108