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Implement pass through ioctl command VFIO_DEVICE_GET_INFO.

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PiperOrigin-RevId: 617621125
This commit is contained in:
Jing Chen
2024-03-20 14:12:51 -07:00
committed by gVisor bot
parent 1f6bd75648
commit 705fb540ec
4 changed files with 110 additions and 23 deletions
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pkg/abi/linux/vfio.go
+39
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@@ -27,10 +27,49 @@ const (
VFIO_TYPE1v2_IOMMU = 3
)
// VFIO device info flags.
const (
// Device supports reset.
VFIO_DEVICE_FLAGS_RESET = 1 << iota
// VFIO-pci device.
VFIO_DEVICE_FLAGS_PCI
// VFIO-platform device.
VFIO_DEVICE_FLAGS_PLATFORM
// VFIO-amba device.
VFIO_DEVICE_FLAGS_AMBA
// VFIO-ccw device.
VFIO_DEVICE_FLAGS_CCW
// VFIO-ap device.
VFIO_DEVICE_FLAGS_AP
// VFIO-fsl-mc device.
VFIO_DEVICE_FLAGS_FSL_MC
// Info supports caps.
VFIO_DEVICE_FLAGS_CAPS
// VFIO-cdx device.
VFIO_DEVICE_FLAGS_CDX
)
// IOCTLs for VFIO file descriptor from include/uapi/linux/vfio.h.
var (
VFIO_CHECK_EXTENSION = IO(VFIO_TYPE, VFIO_BASE+1)
VFIO_SET_IOMMU = IO(VFIO_TYPE, VFIO_BASE+2)
VFIO_GROUP_SET_CONTAINER = IO(VFIO_TYPE, VFIO_BASE+4)
VFIO_GROUP_GET_DEVICE_FD = IO(VFIO_TYPE, VFIO_BASE+6)
VFIO_DEVICE_GET_INFO = IO(VFIO_TYPE, VFIO_BASE+7)
)
// VFIODeviceInfo is analogous to vfio_device_info
// from include/uapi/linux/vfio.h.
//
// +marshal
type VFIODeviceInfo struct {
Argsz uint32
Flags uint32
// The total amount of regions.
NumRegions uint32
// The maximum number of IRQ.
NumIrqs uint32
// Offset within info struct of first cap.
CapOffset uint32
pad uint32
}