diff options
| author | Alex Williamson <alex.williamson@redhat.com> | 2023-05-20 00:47:48 +0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-06-16 21:22:18 +0300 |
| commit | a5bfe22db2a4a1ae467f31cfa1d72043eb9f1877 (patch) | |
| tree | 04c8a04ce7342bef61fddebc053316391c763281 /include/uapi | |
| parent | d9824f70e52c736498c9177688cee5aa789e560c (diff) | |
| download | linux-a5bfe22db2a4a1ae467f31cfa1d72043eb9f1877.tar.xz | |
vfio/pci-core: Add capability for AtomicOp completer support
Test and enable PCIe AtomicOp completer support of various widths and
report via device-info capability to userspace.
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Robin Voetter <robin@streamhpc.com>
Tested-by: Robin Voetter <robin@streamhpc.com>
Link: https://lore.kernel.org/r/20230519214748.402003-1-alex.williamson@redhat.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/vfio.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index 1a36134cae5c..4f48bad09a37 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -240,6 +240,20 @@ struct vfio_device_info { #define VFIO_DEVICE_INFO_CAP_ZPCI_UTIL 3 #define VFIO_DEVICE_INFO_CAP_ZPCI_PFIP 4 +/* + * The following VFIO_DEVICE_INFO capability reports support for PCIe AtomicOp + * completion to the root bus with supported widths provided via flags. + */ +#define VFIO_DEVICE_INFO_CAP_PCI_ATOMIC_COMP 5 +struct vfio_device_info_cap_pci_atomic_comp { + struct vfio_info_cap_header header; + __u32 flags; +#define VFIO_PCI_ATOMIC_COMP32 (1 << 0) +#define VFIO_PCI_ATOMIC_COMP64 (1 << 1) +#define VFIO_PCI_ATOMIC_COMP128 (1 << 2) + __u32 reserved; +}; + /** * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8, * struct vfio_region_info) |