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[qemu.git] / 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
46 typedef struct DECState {
47     PCIHostState parent_obj;
48 } DECState;
49
50 static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
51 {
52     return irq_num;
53 }
54
55 static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp)
56 {
57     pci_bridge_initfn(pci_dev, TYPE_PCI_BUS);
58 }
59
60 static 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
77 static 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 };
83
84 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
85 {
86     PCIDevice *dev;
87     PCIBridge *br;
88
89     dev = pci_create_multifunction(parent_bus, devfn, false,
90                                    "dec-21154-p2p-bridge");
91     br = PCI_BRIDGE(dev);
92     pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
93     qdev_init_nofail(&dev->qdev);
94     return pci_bridge_get_sec_bus(br);
95 }
96
97 static int pci_dec_21154_device_init(SysBusDevice *dev)
98 {
99     PCIHostState *phb;
100
101     phb = PCI_HOST_BRIDGE(dev);
102
103     memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
104                           dev, "pci-conf-idx", 0x1000);
105     memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
106                           dev, "pci-data-idx", 0x1000);
107     sysbus_init_mmio(dev, &phb->conf_mem);
108     sysbus_init_mmio(dev, &phb->data_mem);
109     return 0;
110 }
111
112 static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp)
113 {
114     /* PCI2PCI bridge same values as PearPC - check this */
115 }
116
117 static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
118 {
119     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
120     DeviceClass *dc = DEVICE_CLASS(klass);
121
122     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
123     k->realize = dec_21154_pci_host_realize;
124     k->vendor_id = PCI_VENDOR_ID_DEC;
125     k->device_id = PCI_DEVICE_ID_DEC_21154;
126     k->revision = 0x02;
127     k->class_id = PCI_CLASS_BRIDGE_PCI;
128     k->is_bridge = 1;
129     /*
130      * PCI-facing part of the host bridge, not usable without the
131      * host-facing part, which can't be device_add'ed, yet.
132      */
133     dc->user_creatable = false;
134 }
135
136 static const TypeInfo dec_21154_pci_host_info = {
137     .name          = "dec-21154",
138     .parent        = TYPE_PCI_DEVICE,
139     .instance_size = sizeof(PCIDevice),
140     .class_init    = dec_21154_pci_host_class_init,
141 };
142
143 static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
144 {
145     SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
146
147     sdc->init = pci_dec_21154_device_init;
148 }
149
150 static const TypeInfo pci_dec_21154_device_info = {
151     .name          = TYPE_DEC_21154,
152     .parent        = TYPE_PCI_HOST_BRIDGE,
153     .instance_size = sizeof(DECState),
154     .class_init    = pci_dec_21154_device_class_init,
155 };
156
157 static void dec_register_types(void)
158 {
159     type_register_static(&pci_dec_21154_device_info);
160     type_register_static(&dec_21154_pci_host_info);
161     type_register_static(&dec_21154_pci_bridge_info);
162 }
163
164 type_init(dec_register_types)
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