diff options
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/vfio.h | 21 | ||||
| -rw-r--r-- | include/uapi/linux/vfio_zdev.h | 2 |
2 files changed, 23 insertions, 0 deletions
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index 5de618a3a5ee..e41437fa17ad 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -1534,6 +1534,27 @@ struct vfio_device_feature_dma_buf { */ #define VFIO_DEVICE_FEATURE_MIG_PRECOPY_INFOv2 12 +/** + * VFIO_DEVICE_FEATURE_ZPCI_ERROR feature provides PCI error information to + * userspace for vfio-pci devices on s390. On s390, PCI error recovery + * involves platform firmware and notification to operating systems is done + * by architecture specific mechanism. Exposing this information to + * userspace allows it to take appropriate actions to handle an + * error on the device. + * + * Userspace provides an opaque buffer of fixed length, and the kernel + * fills it with the zpci_ccdf_err data structure. The length of + * zpci_ccdf_err is provided to userspace via the + * VFIO_DEVICE_INFO_CAP_ZPCI_BASE capability. + * + * The ioctl returns -ENOMSG if there are no pending PCI errors. + */ +struct vfio_device_feature_zpci_err { + __aligned_u64 data; +}; + +#define VFIO_DEVICE_FEATURE_ZPCI_ERROR 13 + /* -------- API for Type1 VFIO IOMMU -------- */ /** diff --git a/include/uapi/linux/vfio_zdev.h b/include/uapi/linux/vfio_zdev.h index 77f2aff1f27e..d6c1175c884e 100644 --- a/include/uapi/linux/vfio_zdev.h +++ b/include/uapi/linux/vfio_zdev.h @@ -32,6 +32,8 @@ struct vfio_device_info_cap_zpci_base { /* End of version 1 */ __u32 fh; /* PCI function handle */ /* End of version 2 */ + __u32 ccdf_err_length; /* PCI CCDF length */ + /* End of version 3 */ }; /** |