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-rw-r--r--include/uapi/misc/cxl.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/uapi/misc/cxl.h b/include/uapi/misc/cxl.h
index 8cd334f99ddc..cbae529b7ce0 100644
--- a/include/uapi/misc/cxl.h
+++ b/include/uapi/misc/cxl.h
@@ -93,6 +93,7 @@ enum cxl_event_type {
CXL_EVENT_AFU_INTERRUPT = 1,
CXL_EVENT_DATA_STORAGE = 2,
CXL_EVENT_AFU_ERROR = 3,
+ CXL_EVENT_AFU_DRIVER = 4,
};
struct cxl_event_header {
@@ -124,12 +125,28 @@ struct cxl_event_afu_error {
__u64 error;
};
+struct cxl_event_afu_driver_reserved {
+ /*
+ * Defines the buffer passed to the cxl driver by the AFU driver.
+ *
+ * This is not ABI since the event header.size passed to the user for
+ * existing events is set in the read call to sizeof(cxl_event_header)
+ * + sizeof(whatever event is being dispatched) and the user is already
+ * required to use a 4K buffer on the read call.
+ *
+ * Of course the contents will be ABI, but that's up the AFU driver.
+ */
+ size_t data_size;
+ u8 data[];
+};
+
struct cxl_event {
struct cxl_event_header header;
union {
struct cxl_event_afu_interrupt irq;
struct cxl_event_data_storage fault;
struct cxl_event_afu_error afu_error;
+ struct cxl_event_afu_driver_reserved afu_driver_event;
};
};