Merge remote-tracking branch 'remotes/rth/tags/pull-arm-20211021' into staging
[qemu.git] / include / hw / pci / pci_host.h
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 #include "qom/object.h"
33
34 #define TYPE_PCI_HOST_BRIDGE "pci-host-bridge"
35 OBJECT_DECLARE_TYPE(PCIHostState, PCIHostBridgeClass, PCI_HOST_BRIDGE)
36
37 struct PCIHostState {
38 SysBusDevice busdev;
39
40 MemoryRegion conf_mem;
41 MemoryRegion data_mem;
42 MemoryRegion mmcfg;
43 uint32_t config_reg;
44 bool mig_enabled;
45 PCIBus *bus;
46 bool bypass_iommu;
47
48 QLIST_ENTRY(PCIHostState) next;
49 };
50
51 struct PCIHostBridgeClass {
52 SysBusDeviceClass parent_class;
53
54 const char *(*root_bus_path)(PCIHostState *, PCIBus *);
55 };
56
57 /* common internal helpers for PCI/PCIe hosts, cut off overflows */
58 void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr,
59 uint32_t limit, uint32_t val, uint32_t len);
60 uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr,
61 uint32_t limit, uint32_t len);
62
63 void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, unsigned len);
64 uint32_t pci_data_read(PCIBus *s, uint32_t addr, unsigned len);
65
66 extern const MemoryRegionOps pci_host_conf_le_ops;
67 extern const MemoryRegionOps pci_host_conf_be_ops;
68 extern const MemoryRegionOps pci_host_data_le_ops;
69 extern const MemoryRegionOps pci_host_data_be_ops;
70
71 #endif /* PCI_HOST_H */