xref: /illumos-kvm-cmd/hw/dec_pci.c (revision 68396ea9)
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 "dec_pci.h"
27 #include "sysbus.h"
28 #include "pci.h"
29 #include "pci_host.h"
30 #include "pci_bridge.h"
31 #include "pci_internals.h"
32 
33 /* debug DEC */
34 //#define DEBUG_DEC
35 
36 #ifdef DEBUG_DEC
37 #define DEC_DPRINTF(fmt, ...)                               \
38     do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
39 #else
40 #define DEC_DPRINTF(fmt, ...)
41 #endif
42 
43 typedef struct DECState {
44     SysBusDevice busdev;
45     PCIHostState host_state;
46 } DECState;
47 
dec_map_irq(PCIDevice * pci_dev,int irq_num)48 static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
49 {
50     return irq_num;
51 }
52 
dec_21154_initfn(PCIDevice * dev)53 static int dec_21154_initfn(PCIDevice *dev)
54 {
55     int rc;
56 
57     rc = pci_bridge_initfn(dev);
58     if (rc < 0) {
59         return rc;
60     }
61 
62     pci_config_set_vendor_id(dev->config, PCI_VENDOR_ID_DEC);
63     pci_config_set_device_id(dev->config, PCI_DEVICE_ID_DEC_21154);
64     return 0;
65 }
66 
67 static PCIDeviceInfo dec_21154_pci_bridge_info = {
68     .qdev.name = "dec-21154-p2p-bridge",
69     .qdev.desc = "DEC 21154 PCI-PCI bridge",
70     .qdev.size = sizeof(PCIBridge),
71     .qdev.vmsd = &vmstate_pci_device,
72     .qdev.reset = pci_bridge_reset,
73     .init = dec_21154_initfn,
74     .exit = pci_bridge_exitfn,
75     .config_write = pci_bridge_write_config,
76     .is_bridge = 1,
77 };
78 
pci_dec_21154_init(PCIBus * parent_bus,int devfn)79 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
80 {
81     PCIDevice *dev;
82     PCIBridge *br;
83 
84     dev = pci_create_multifunction(parent_bus, devfn, false,
85                                    "dec-21154-p2p-bridge");
86     br = DO_UPCAST(PCIBridge, dev, dev);
87     pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
88     qdev_init_nofail(&dev->qdev);
89     return pci_bridge_get_sec_bus(br);
90 }
91 
pci_dec_21154_init_device(SysBusDevice * dev)92 static int pci_dec_21154_init_device(SysBusDevice *dev)
93 {
94     DECState *s;
95     int pci_mem_config, pci_mem_data;
96 
97     s = FROM_SYSBUS(DECState, dev);
98 
99     pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
100                                                  DEVICE_LITTLE_ENDIAN);
101     pci_mem_data = pci_host_data_register_mmio(&s->host_state,
102                                                DEVICE_LITTLE_ENDIAN);
103     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
104     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
105     return 0;
106 }
107 
dec_21154_pci_host_init(PCIDevice * d)108 static int dec_21154_pci_host_init(PCIDevice *d)
109 {
110     /* PCI2PCI bridge same values as PearPC - check this */
111     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_DEC);
112     pci_config_set_device_id(d->config, PCI_DEVICE_ID_DEC_21154);
113     pci_set_byte(d->config + PCI_REVISION_ID, 0x02);
114     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_PCI);
115     return 0;
116 }
117 
118 static PCIDeviceInfo dec_21154_pci_host_info = {
119     .qdev.name = "dec-21154",
120     .qdev.size = sizeof(PCIDevice),
121     .init      = dec_21154_pci_host_init,
122     .is_bridge  = 1,
123 };
124 
dec_register_devices(void)125 static void dec_register_devices(void)
126 {
127     sysbus_register_dev("dec-21154", sizeof(DECState),
128                         pci_dec_21154_init_device);
129     pci_qdev_register(&dec_21154_pci_host_info);
130     pci_qdev_register(&dec_21154_pci_bridge_info);
131 }
132 
133 device_init(dec_register_devices)
134