From: Matt Carlson <mcarlson@broadcom.com>
Date: Wed, 14 Dec 2011 11:10:01 +0000 (+0000)
Subject: tg3: Break out RSS indir table init and assignment
X-Git-Tag: v2.6.39-400.9.0~423^2~19^2~11^2~650
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=bf179533fee34d86c710e04ca92c2212cf70d563;p=users%2Fjedix%2Flinux-maple.git

tg3: Break out RSS indir table init and assignment

This patch creates a new device member to hold the RSS indirection table
and separates out the code that initializes the table from the code that
programs the table into device registers.

(cherry picked from commit bcebcc468a6bcd3820fe9ad36b34220563efc93a)
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Joe Jin <joe.jin@oracle.com>
---

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 45998c501fe1..268b4916a1cd 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -134,7 +134,6 @@ static inline void _tg3_flag_clear(enum TG3_FLAGS flag, unsigned long *bits)
 	(tg3_flag(tp, LRG_PROD_RING_CAP) ? \
 	 TG3_RX_JMB_MAX_SIZE_5717 : TG3_RX_JMB_MAX_SIZE_5700)
 #define TG3_DEF_RX_JUMBO_RING_PENDING	100
-#define TG3_RSS_INDIR_TBL_SIZE		128
 
 /* Do not place this n-ring entries value into the tp struct itself,
  * we really want to expose these constants to GCC so that modulo et
@@ -8252,6 +8251,37 @@ static void tg3_setup_rxbd_thresholds(struct tg3 *tp)
 		tw32(JMB_REPLENISH_LWM, bdcache_maxcnt);
 }
 
+void tg3_rss_init_indir_tbl(struct tg3 *tp)
+{
+	int i;
+
+	if (!tg3_flag(tp, SUPPORT_MSIX))
+		return;
+
+	if (tp->irq_cnt <= 2)
+		memset(&tp->rss_ind_tbl[0], 0, sizeof(tp->rss_ind_tbl));
+	else
+		for (i = 0; i < TG3_RSS_INDIR_TBL_SIZE; i++)
+			tp->rss_ind_tbl[i] = i % (tp->irq_cnt - 1);
+}
+
+void tg3_rss_write_indir_tbl(struct tg3 *tp)
+{
+	int i = 0;
+	u32 reg = MAC_RSS_INDIR_TBL_0;
+
+	while (i < TG3_RSS_INDIR_TBL_SIZE) {
+		u32 val = tp->rss_ind_tbl[i];
+		i++;
+		for (; i % 8; i++) {
+			val <<= 4;
+			val |= tp->rss_ind_tbl[i];
+		}
+		tw32(reg, val);
+		reg += 4;
+	}
+}
+
 /* tp->lock is held. */
 static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 {
@@ -8942,28 +8972,7 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 	udelay(100);
 
 	if (tg3_flag(tp, ENABLE_RSS)) {
-		int i = 0;
-		u32 reg = MAC_RSS_INDIR_TBL_0;
-
-		if (tp->irq_cnt == 2) {
-			for (i = 0; i < TG3_RSS_INDIR_TBL_SIZE; i += 8) {
-				tw32(reg, 0x0);
-				reg += 4;
-			}
-		} else {
-			u32 val;
-
-			while (i < TG3_RSS_INDIR_TBL_SIZE) {
-				val = i % (tp->irq_cnt - 1);
-				i++;
-				for (; i % 8; i++) {
-					val <<= 4;
-					val |= (i % (tp->irq_cnt - 1));
-				}
-				tw32(reg, val);
-				reg += 4;
-			}
-		}
+		tg3_rss_write_indir_tbl(tp);
 
 		/* Setup the "secret" hash key. */
 		tw32(MAC_RSS_HASH_KEY_0, 0x5f865437);
@@ -9687,6 +9696,8 @@ static int tg3_open(struct net_device *dev)
 	 */
 	tg3_ints_init(tp);
 
+	tg3_rss_init_indir_tbl(tp);
+
 	/* The placement of this call is tied
 	 * to the setup and use of Host TX descriptors.
 	 */
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 28d80f84c663..af30854fd70b 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -31,6 +31,8 @@
 #define TG3_RX_RET_MAX_SIZE_5705	512
 #define TG3_RX_RET_MAX_SIZE_5717	4096
 
+#define TG3_RSS_INDIR_TBL_SIZE		128
+
 /* First 256 bytes are a mirror of PCI config space. */
 #define TG3PCI_VENDOR			0x00000000
 #define  TG3PCI_VENDOR_BROADCOM		 0x14e4
@@ -3139,6 +3141,7 @@ struct tg3 {
 	u32				led_ctrl;
 	u32				phy_otp;
 	u32				setlpicnt;
+	u8				rss_ind_tbl[TG3_RSS_INDIR_TBL_SIZE];
 
 #define TG3_BPN_SIZE			24
 	char				board_part_number[TG3_BPN_SIZE];