From 02a8e5bc1c06045f36423bd9632ad9f40da18d3f Mon Sep 17 00:00:00 2001 From: Alastair D'Silva Date: Fri, 11 May 2018 16:13:02 +1000 Subject: 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 Acked-by: Frederic Barrat Acked-by: Andrew Donnellan Signed-off-by: Michael Ellerman --- include/uapi/misc/ocxl.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/uapi') 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 */ -- cgit v1.2.3-55-g7522