| /** @file | |
| Definitions from the VirtIo 1.0 specification (csprd05). | |
| Copyright (C) 2016, Red Hat, Inc. | |
| This program and the accompanying materials are licensed and made available | |
| under the terms and conditions of the BSD License which accompanies this | |
| distribution. The full text of the license may be found at | |
| http://opensource.org/licenses/bsd-license.php | |
| THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT | |
| WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| **/ | |
| #ifndef _VIRTIO_1_0_H_ | |
| #define _VIRTIO_1_0_H_ | |
| #include <IndustryStandard/Virtio095.h> | |
| // | |
| // Subsystem Device IDs (to be) introduced in VirtIo 1.0 | |
| // | |
| #define VIRTIO_SUBSYSTEM_GPU_DEVICE 16 | |
| // | |
| // Structures for parsing the VirtIo 1.0 specific PCI capabilities from the | |
| // config space | |
| // | |
| #pragma pack (1) | |
| typedef struct { | |
| UINT8 CapId; // Capability identifier (generic) | |
| UINT8 CapNext; // Link to next capability (generic) | |
| } VIRTIO_PCI_CAP_LINK; | |
| typedef struct { | |
| UINT8 ConfigType; // Identifies the specific VirtIo 1.0 config structure | |
| UINT8 Bar; // The BAR that contains the structure | |
| UINT8 Padding[3]; | |
| UINT32 Offset; // Offset within Bar until the start of the structure | |
| UINT32 Length; // Length of the structure | |
| } VIRTIO_PCI_CAP; | |
| #pragma pack () | |
| // | |
| // Values for the VIRTIO_PCI_CAP.ConfigType field | |
| // | |
| #define VIRTIO_PCI_CAP_COMMON_CFG 1 // Common configuration | |
| #define VIRTIO_PCI_CAP_NOTIFY_CFG 2 // Notifications | |
| #define VIRTIO_PCI_CAP_DEVICE_CFG 4 // Device specific configuration | |
| // | |
| // Structure pointed-to by Bar and Offset in VIRTIO_PCI_CAP when ConfigType is | |
| // VIRTIO_PCI_CAP_COMMON_CFG | |
| // | |
| #pragma pack (1) | |
| typedef struct { | |
| UINT32 DeviceFeatureSelect; | |
| UINT32 DeviceFeature; | |
| UINT32 DriverFeatureSelect; | |
| UINT32 DriverFeature; | |
| UINT16 MsixConfig; | |
| UINT16 NumQueues; | |
| UINT8 DeviceStatus; | |
| UINT8 ConfigGeneration; | |
| UINT16 QueueSelect; | |
| UINT16 QueueSize; | |
| UINT16 QueueMsixVector; | |
| UINT16 QueueEnable; | |
| UINT16 QueueNotifyOff; | |
| UINT64 QueueDesc; | |
| UINT64 QueueAvail; | |
| UINT64 QueueUsed; | |
| } VIRTIO_PCI_COMMON_CFG; | |
| #pragma pack () | |
| // | |
| // VirtIo 1.0 device status bits | |
| // | |
| #define VSTAT_FEATURES_OK BIT3 | |
| // | |
| // VirtIo 1.0 reserved (device-independent) feature bits | |
| // | |
| #define VIRTIO_F_VERSION_1 BIT32 | |
| #endif // _VIRTIO_1_0_H_ |