+#define QAT_CSR_HEAD_WRITE_THRESH 32U
+/* number of requests to accumulate before writing head CSR */
+#define QAT_CSR_TAIL_WRITE_THRESH 32U
+/* number of requests to accumulate before writing tail CSR */
+#define QAT_CSR_TAIL_FORCE_WRITE_THRESH 256U
+/* number of inflights below which no tail write coalescing should occur */
+