1 | /* |
2 | * QEMU Common PCI Host bridge configuration data space access routines. |
3 | * |
4 | * Copyright (c) 2006 Fabrice Bellard |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal |
8 | * in the Software without restriction, including without limitation the rights |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
10 | * copies of the Software, and to permit persons to whom the Software is |
11 | * furnished to do so, subject to the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included in |
14 | * all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
22 | * THE SOFTWARE. |
23 | */ |
24 | |
25 | /* Worker routines for a PCI host controller that uses an {address,data} |
26 | register pair to access PCI configuration space. */ |
27 | |
28 | #ifndef PCI_HOST_H |
29 | #define PCI_HOST_H |
30 | |
31 | #include "hw/sysbus.h" |
32 | |
33 | #define TYPE_PCI_HOST_BRIDGE "pci-host-bridge" |
34 | #define PCI_HOST_BRIDGE(obj) \ |
35 | OBJECT_CHECK(PCIHostState, (obj), TYPE_PCI_HOST_BRIDGE) |
36 | #define PCI_HOST_BRIDGE_CLASS(klass) \ |
37 | OBJECT_CLASS_CHECK(PCIHostBridgeClass, (klass), TYPE_PCI_HOST_BRIDGE) |
38 | #define PCI_HOST_BRIDGE_GET_CLASS(obj) \ |
39 | OBJECT_GET_CLASS(PCIHostBridgeClass, (obj), TYPE_PCI_HOST_BRIDGE) |
40 | |
41 | struct PCIHostState { |
42 | SysBusDevice busdev; |
43 | |
44 | MemoryRegion conf_mem; |
45 | MemoryRegion data_mem; |
46 | MemoryRegion mmcfg; |
47 | uint32_t config_reg; |
48 | PCIBus *bus; |
49 | |
50 | QLIST_ENTRY(PCIHostState) next; |
51 | }; |
52 | |
53 | typedef struct PCIHostBridgeClass { |
54 | SysBusDeviceClass parent_class; |
55 | |
56 | const char *(*root_bus_path)(PCIHostState *, PCIBus *); |
57 | } PCIHostBridgeClass; |
58 | |
59 | /* common internal helpers for PCI/PCIe hosts, cut off overflows */ |
60 | void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr, |
61 | uint32_t limit, uint32_t val, uint32_t len); |
62 | uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr, |
63 | uint32_t limit, uint32_t len); |
64 | |
65 | void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len); |
66 | uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len); |
67 | |
68 | extern const MemoryRegionOps pci_host_conf_le_ops; |
69 | extern const MemoryRegionOps pci_host_conf_be_ops; |
70 | extern const MemoryRegionOps pci_host_data_le_ops; |
71 | extern const MemoryRegionOps pci_host_data_be_ops; |
72 | |
73 | #endif /* PCI_HOST_H */ |
74 | |