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 PCI_HOST_BYPASS_IOMMU "bypass-iommu" 35 36 #define TYPE_PCI_HOST_BRIDGE "pci-host-bridge" 37 OBJECT_DECLARE_TYPE(PCIHostState, PCIHostBridgeClass, PCI_HOST_BRIDGE) 38 39 struct PCIHostState { 40 SysBusDevice busdev; 41 42 MemoryRegion conf_mem; 43 MemoryRegion data_mem; 44 MemoryRegion mmcfg; 45 uint32_t config_reg; 46 bool mig_enabled; 47 PCIBus *bus; 48 bool bypass_iommu; 49 50 QLIST_ENTRY(PCIHostState) next; 51 }; 52 53 struct PCIHostBridgeClass { 54 SysBusDeviceClass parent_class; 55 56 const char *(*root_bus_path)(PCIHostState *, PCIBus *); 57 }; 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, unsigned len); 66 uint32_t pci_data_read(PCIBus *s, uint32_t addr, unsigned 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