diff options
| author |   Alastair D'Silva <alastair@d-silva.org> | 2018-05-11 16:13:02 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-06-03 20:40:32 +1000 |
| commit | 02a8e5bc1c06045f36423bd9632ad9f40da18d3f (patch) | |
| tree | e6c82dfe03d4c5639253ed3b058ee67c20a38811 /include/uapi | |
| parent | ocxl: Expose the thread_id needed for wait on POWER9 (diff) | |
| download | linux-dev-02a8e5bc1c06045f36423bd9632ad9f40da18d3f.tar.xz linux-dev-02a8e5bc1c06045f36423bd9632ad9f40da18d3f.zip | |
ocxl: Add an IOCTL so userspace knows what OCXL features are available
In order for a userspace AFU driver to call the POWER9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/misc/ocxl.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/uapi/misc/ocxl.h b/include/uapi/misc/ocxl.h index 561e6f0dfcb7..97937cfa3baa 100644 --- a/include/uapi/misc/ocxl.h +++ b/include/uapi/misc/ocxl.h @@ -55,6 +55,11 @@ struct ocxl_ioctl_p9_wait { __u64 reserved3[3]; }; +#define OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT 0x01 +struct ocxl_ioctl_features { + __u64 flags[4]; +}; + struct ocxl_ioctl_irq_fd { __u64 irq_offset; __s32 eventfd; @@ -70,5 +75,6 @@ struct ocxl_ioctl_irq_fd { #define OCXL_IOCTL_IRQ_SET_FD _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd) #define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata) #define OCXL_IOCTL_ENABLE_P9_WAIT _IOR(OCXL_MAGIC, 0x15, struct ocxl_ioctl_p9_wait) +#define OCXL_IOCTL_GET_FEATURES _IOR(OCXL_MAGIC, 0x16, struct ocxl_ioctl_features) #endif /* _UAPI_MISC_OCXL_H */ |