Merge remote-tracking branch 'remotes/riscv/tags/riscv-for-master-3.1-sf0' into staging
[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     .interfaces = (InterfaceInfo[]) {
83         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
84         { },
85     },
86 };
87
88 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
89 {
90     PCIDevice *dev;
91     PCIBridge *br;
92
93     dev = pci_create_multifunction(parent_bus, devfn, false,
94                                    "dec-21154-p2p-bridge");
95     br = PCI_BRIDGE(dev);
96     pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
97     qdev_init_nofail(&dev->qdev);
98     return pci_bridge_get_sec_bus(br);
99 }
100
101 static int pci_dec_21154_device_init(SysBusDevice *dev)
102 {
103     PCIHostState *phb;
104
105     phb = PCI_HOST_BRIDGE(dev);
106
107     memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
108                           dev, "pci-conf-idx", 0x1000);
109     memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
110                           dev, "pci-data-idx", 0x1000);
111     sysbus_init_mmio(dev, &phb->conf_mem);
112     sysbus_init_mmio(dev, &phb->data_mem);
113     return 0;
114 }
115
116 static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp)
117 {
118     /* PCI2PCI bridge same values as PearPC - check this */
119 }
120
121 static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
122 {
123     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
124     DeviceClass *dc = DEVICE_CLASS(klass);
125
126     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
127     k->realize = dec_21154_pci_host_realize;
128     k->vendor_id = PCI_VENDOR_ID_DEC;
129     k->device_id = PCI_DEVICE_ID_DEC_21154;
130     k->revision = 0x02;
131     k->class_id = PCI_CLASS_BRIDGE_PCI;
132     k->is_bridge = 1;
133     /*
134      * PCI-facing part of the host bridge, not usable without the
135      * host-facing part, which can't be device_add'ed, yet.
136      */
137     dc->user_creatable = false;
138 }
139
140 static const TypeInfo dec_21154_pci_host_info = {
141     .name          = "dec-21154",
142     .parent        = TYPE_PCI_DEVICE,
143     .instance_size = sizeof(PCIDevice),
144     .class_init    = dec_21154_pci_host_class_init,
145     .interfaces = (InterfaceInfo[]) {
146         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
147         { },
148     },
149 };
150
151 static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
152 {
153     SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
154
155     sdc->init = pci_dec_21154_device_init;
156 }
157
158 static const TypeInfo pci_dec_21154_device_info = {
159     .name          = TYPE_DEC_21154,
160     .parent        = TYPE_PCI_HOST_BRIDGE,
161     .instance_size = sizeof(DECState),
162     .class_init    = pci_dec_21154_device_class_init,
163 };
164
165 static void dec_register_types(void)
166 {
167     type_register_static(&pci_dec_21154_device_info);
168     type_register_static(&dec_21154_pci_host_info);
169     type_register_static(&dec_21154_pci_bridge_info);
170 }
171
172 type_init(dec_register_types)
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