IOCTL: Adding memory exception data

Signed-off-by: Alexey Skidanov <Alexey.Skidanov@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@amd.com>

include/linux/kfd_ioctl.h

@@ -194,8 +194,35 @@ struct kfd_ioctl_reset_event_args {
 	uint32_t pad;
 };
 
+
+struct kfd_memory_exception_failure {
+	bool NotPresent;  /* Page not present or supervisor privilege */
+	bool ReadOnly;  /* Write access to a read-only page */
+	bool NoExecute;  /* Execute access to a page marked NX */
+	bool pad;
+};
+
+/* memory exception data*/
+struct kfd_hsa_memory_exception_data {
+	uint64_t va;
+	uint32_t gpu_id;
+	struct kfd_memory_exception_failure failure;
+};
+
+/* Event data*/
+struct kfd_event_data {
+	union {
+		struct kfd_hsa_memory_exception_data memory_exception_data;
+	};				/* From KFD */
+	uint64_t kfd_event_data_ext;	/* pointer to an extension structure
+	 	 	 	 	   for future exception types */
+	uint32_t event_id;		/* to KFD */
+	uint32_t pad;
+};
+
 struct kfd_ioctl_wait_events_args {
-	uint64_t events_ptr;		/* to KFD */
+	uint64_t events_ptr;		/* pointed to struct
+					   kfd_event_data array, to KFD */
 	uint32_t num_events;		/* to KFD */
 	uint32_t wait_for_all;		/* to KFD */
 	uint32_t timeout;		/* to KFD */