svn commit: r305702 - head/sys/dev/cxgbe

[Navdeep Parhar]

Author: np
Date: Sun Sep 11 17:51:17 2016
New Revision: 305702
URL: https://svnweb.freebsd.org/changeset/base/305702

Log:
  cxgbe(4): Use smaller min/max bursts for fl descriptors with a T6.
  
  Sponsored by:	Chelsio Communications

Modified:
  head/sys/dev/cxgbe/t4_netmap.c
  head/sys/dev/cxgbe/t4_sge.c

Modified: head/sys/dev/cxgbe/t4_netmap.c
==============================================================================
--- head/sys/dev/cxgbe/t4_netmap.c	Sun Sep 11 17:48:06 2016	(r305701)
+++ head/sys/dev/cxgbe/t4_netmap.c	Sun Sep 11 17:51:17 2016	(r305702)
@@ -139,8 +139,10 @@ alloc_nm_rxq_hwq(struct vi_info *vi, str
 		(fl_pad ? F_FW_IQ_CMD_FL0PADEN : 0) |
 		(black_hole == 2 ? F_FW_IQ_CMD_FL0PACKEN : 0));
 	c.fl0dcaen_to_fl0cidxfthresh =
-	    htobe16(V_FW_IQ_CMD_FL0FBMIN(X_FETCHBURSTMIN_128B) |
-		V_FW_IQ_CMD_FL0FBMAX(X_FETCHBURSTMAX_512B));
+	    htobe16(V_FW_IQ_CMD_FL0FBMIN(chip_id(sc) <= CHELSIO_T5 ?
+		X_FETCHBURSTMIN_128B : X_FETCHBURSTMIN_64B) |
+		V_FW_IQ_CMD_FL0FBMAX(chip_id(sc) <= CHELSIO_T5 ?
+		X_FETCHBURSTMAX_512B : X_FETCHBURSTMAX_256B));
 	c.fl0size = htobe16(na->num_rx_desc / 8 + sp->spg_len / EQ_ESIZE);
 	c.fl0addr = htobe64(nm_rxq->fl_ba);
 

Modified: head/sys/dev/cxgbe/t4_sge.c
==============================================================================
--- head/sys/dev/cxgbe/t4_sge.c	Sun Sep 11 17:48:06 2016	(r305701)
+++ head/sys/dev/cxgbe/t4_sge.c	Sun Sep 11 17:51:17 2016	(r305702)
@@ -2733,8 +2733,10 @@ alloc_iq_fl(struct vi_info *vi, struct s
 				    F_FW_IQ_CMD_FL0CONGEN);
 		}
 		c.fl0dcaen_to_fl0cidxfthresh =
-		    htobe16(V_FW_IQ_CMD_FL0FBMIN(X_FETCHBURSTMIN_128B) |
-			V_FW_IQ_CMD_FL0FBMAX(X_FETCHBURSTMAX_512B));
+		    htobe16(V_FW_IQ_CMD_FL0FBMIN(chip_id(sc) <= CHELSIO_T5 ?
+			X_FETCHBURSTMIN_128B : X_FETCHBURSTMIN_64B) |
+			V_FW_IQ_CMD_FL0FBMAX(chip_id(sc) <= CHELSIO_T5 ?
+			X_FETCHBURSTMAX_512B : X_FETCHBURSTMAX_256B));
 		c.fl0size = htobe16(fl->qsize);
 		c.fl0addr = htobe64(fl->ba);
 	}