| /** @file | |
| Definitions from the VirtIo 1.0 specification (csprd05). | |
| Copyright (C) 2016, Red Hat, Inc. | |
| Copyright (C) 2017, AMD, Inc. | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| #ifndef _VIRTIO_1_0_H_ | |
| #define _VIRTIO_1_0_H_ | |
| #include <IndustryStandard/Pci23.h> | |
| #include <IndustryStandard/Virtio095.h> | |
| // | |
| // Subsystem Device IDs (to be) introduced in VirtIo 1.0 | |
| // | |
| #define VIRTIO_SUBSYSTEM_GPU_DEVICE 16 | |
| // | |
| // Subsystem Device IDs from the VirtIo spec at git commit 87fa6b5d8155; | |
| // <https://github.com/oasis-tcs/virtio-spec/tree/87fa6b5d8155>. | |
| // | |
| #define VIRTIO_SUBSYSTEM_FILESYSTEM 26 | |
| // | |
| // Structures for parsing the VirtIo 1.0 specific PCI capabilities from the | |
| // config space | |
| // | |
| #pragma pack (1) | |
| typedef struct { | |
| EFI_PCI_CAPABILITY_VENDOR_HDR VendorHdr; | |
| 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 | |
| #define VIRTIO_F_IOMMU_PLATFORM BIT33 | |
| // | |
| // MMIO VirtIo Header Offsets | |
| // | |
| #define VIRTIO_MMIO_OFFSET_QUEUE_READY 0x44 | |
| #define VIRTIO_MMIO_OFFSET_QUEUE_DESC_LO 0x80 | |
| #define VIRTIO_MMIO_OFFSET_QUEUE_DESC_HI 0x84 | |
| #define VIRTIO_MMIO_OFFSET_QUEUE_AVAIL_LO 0x90 | |
| #define VIRTIO_MMIO_OFFSET_QUEUE_AVAIL_HI 0x94 | |
| #define VIRTIO_MMIO_OFFSET_QUEUE_USED_LO 0xa0 | |
| #define VIRTIO_MMIO_OFFSET_QUEUE_USED_HI 0xa4 | |
| #define VIRTIO_MMIO_OFFSET_CONFIG_GENERATION 0xfc | |
| #endif // _VIRTIO_1_0_H_ |