netdev - [PATCH 04/17] tg3: Break out mini producer ring handling

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Date:	Fri, 28 Aug 2009 16:57:12 -0700
From:	"Matt Carlson" <mcarlson@...adcom.com>
To:	davem@...emloft.net
cc:	netdev@...r.kernel.org, andy@...yhouse.net
Subject: [PATCH 04/17] tg3: Break out mini producer ring handling

This patch separates the code that sets up the mini producer ring from
the code that sets up the jumbo producer rings.  The 5717 asic rev
devices do not have a mini ring, but do have a jumbo frame
implementation similar to the 5704 and previous devices.

Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
---
 drivers/net/tg3.c |   23 ++++++++++++-----------
 1 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 4c4d164..606703c 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -6967,19 +6967,16 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 	tw32(RCVDBDI_STD_BD + TG3_BDINFO_NIC_ADDR,
 	     NIC_SRAM_RX_BUFFER_DESC);
 
-	/* Don't even try to program the JUMBO/MINI buffer descriptor
-	 * configs on 5705.
-	 */
-	if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS) {
-		tw32(RCVDBDI_STD_BD + TG3_BDINFO_MAXLEN_FLAGS,
-		     RX_STD_MAX_SIZE_5705 << BDINFO_FLAGS_MAXLEN_SHIFT);
-	} else {
-		tw32(RCVDBDI_STD_BD + TG3_BDINFO_MAXLEN_FLAGS,
-		     RX_STD_MAX_SIZE << BDINFO_FLAGS_MAXLEN_SHIFT);
-
+	/* Disable the mini ring */
+	if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
 		tw32(RCVDBDI_MINI_BD + TG3_BDINFO_MAXLEN_FLAGS,
 		     BDINFO_FLAGS_DISABLED);
 
+	/* Program the jumbo buffer descriptor ring control
+	 * blocks on those devices that have them.
+	 */
+	if ((tp->tg3_flags2 & TG3_FLG2_JUMBO_CAPABLE) &&
+	    !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) {
 		/* Setup replenish threshold. */
 		tw32(RCVBDI_JUMBO_THRESH, tp->rx_jumbo_pending / 8);
 
@@ -6997,7 +6994,11 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 			     BDINFO_FLAGS_DISABLED);
 		}
 
-	}
+		val = RX_STD_MAX_SIZE << BDINFO_FLAGS_MAXLEN_SHIFT;
+	} else
+		val = RX_STD_MAX_SIZE_5705 << BDINFO_FLAGS_MAXLEN_SHIFT;
+
+	tw32(RCVDBDI_STD_BD + TG3_BDINFO_MAXLEN_FLAGS, val);
 
 	/* There is only one send ring on 5705/5750, no need to explicitly
 	 * disable the others.
-- 
1.6.3.3


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