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| author | Nipun Gupta <nipun.gupta@amd.com> | 2023-05-31 15:45:57 +0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-06-16 21:27:04 +0300 |
| commit | 234489ac561300ceed33e64c3bf3a810b9e2051d (patch) | |
| tree | f6f6ec851deccebef71c16f10d5504c5b37e79ff /include/uapi | |
| parent | 1e44c58cc485ce265696422c5a9282677ec45473 (diff) | |
| download | linux-234489ac561300ceed33e64c3bf3a810b9e2051d.tar.xz | |
vfio/cdx: add support for CDX bus
vfio-cdx driver enables IOCTLs for user space to query
MMIO regions for CDX devices and mmap them. This change
also adds support for reset of CDX devices. With VFIO
enabled on CDX devices, user-space applications can also
exercise DMA securely via IOMMU on these devices.
This change adds the VFIO CDX driver and enables the following
ioctls for CDX devices:
- VFIO_DEVICE_GET_INFO:
- VFIO_DEVICE_GET_REGION_INFO
- VFIO_DEVICE_RESET
Signed-off-by: Nipun Gupta <nipun.gupta@amd.com>
Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com>
Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com>
Link: https://lore.kernel.org/r/20230531124557.11009-1-nipun.gupta@amd.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/vfio.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index 4f48bad09a37..9ab864c6f1ff 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -213,6 +213,7 @@ struct vfio_device_info { #define VFIO_DEVICE_FLAGS_AP (1 << 5) /* vfio-ap device */ #define VFIO_DEVICE_FLAGS_FSL_MC (1 << 6) /* vfio-fsl-mc device */ #define VFIO_DEVICE_FLAGS_CAPS (1 << 7) /* Info supports caps */ +#define VFIO_DEVICE_FLAGS_CDX (1 << 8) /* vfio-cdx device */ __u32 num_regions; /* Max region index + 1 */ __u32 num_irqs; /* Max IRQ index + 1 */ __u32 cap_offset; /* Offset within info struct of first cap */ |