From: Matt Carlson <mcarlson@broadcom.com>
Date: Mon, 2 Nov 2009 12:33:33 +0000 (+0000)
Subject: tg3: Assign flags to fixes in start_xmit_dma_bug
X-Git-Tag: v2.6.33-rc1~388^2~555
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=0e1406dd404ce55dbe8d68b4b5e2aed7e5c75fdb;p=~shefty%2Frdma-dev.git

tg3: Assign flags to fixes in start_xmit_dma_bug

This patch adds a flag for each bug workaround in
tg3_start_xmit_dma_bug().  This is prep work for the following patch.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index ba5d3fe753b..da808250c86 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -5124,7 +5124,8 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb,
 		/* Make sure new skb does not cross any 4G boundaries.
 		 * Drop the packet if it does.
 		 */
-		if (ret || tg3_4g_overflow_test(new_addr, new_skb->len)) {
+		if (ret || ((tp->tg3_flags3 & TG3_FLG3_4G_DMA_BNDRY_BUG) &&
+			    tg3_4g_overflow_test(new_addr, new_skb->len))) {
 			if (!ret)
 				skb_dma_unmap(&tp->pdev->dev, new_skb,
 					      DMA_TO_DEVICE);
@@ -5459,9 +5460,15 @@ static netdev_tx_t tg3_start_xmit_dma_bug(struct sk_buff *skb,
 
 	would_hit_hwbug = 0;
 
-	if (tp->tg3_flags3 & TG3_FLG3_5701_DMA_BUG)
+	if ((tp->tg3_flags3 & TG3_FLG3_4G_DMA_BNDRY_BUG) &&
+	    tg3_4g_overflow_test(mapping, len))
+		would_hit_hwbug = 1;
+
+	if ((tp->tg3_flags3 & TG3_FLG3_40BIT_DMA_LIMIT_BUG) &&
+	    tg3_40bit_overflow_test(tp, mapping, len))
 		would_hit_hwbug = 1;
-	else if (tg3_4g_overflow_test(mapping, len))
+
+	if (tp->tg3_flags3 & TG3_FLG3_5701_DMA_BUG)
 		would_hit_hwbug = 1;
 
 	tg3_set_txd(tnapi, entry, mapping, len, base_flags,
@@ -5482,10 +5489,12 @@ static netdev_tx_t tg3_start_xmit_dma_bug(struct sk_buff *skb,
 
 			tnapi->tx_buffers[entry].skb = NULL;
 
-			if (tg3_4g_overflow_test(mapping, len))
+			if ((tp->tg3_flags3 & TG3_FLG3_4G_DMA_BNDRY_BUG) &&
+			    tg3_4g_overflow_test(mapping, len))
 				would_hit_hwbug = 1;
 
-			if (tg3_40bit_overflow_test(tp, mapping, len))
+			if ((tp->tg3_flags3 & TG3_FLG3_40BIT_DMA_LIMIT_BUG) &&
+			    tg3_40bit_overflow_test(tp, mapping, len))
 				would_hit_hwbug = 1;
 
 			if (tp->tg3_flags2 & TG3_FLG2_HW_TSO)
@@ -12610,12 +12619,15 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 
 	tp->irq_max = 1;
 
-#ifdef TG3_NAPI
 	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
 		tp->tg3_flags |= TG3_FLAG_SUPPORT_MSIX;
 		tp->irq_max = TG3_IRQ_MAX_VECS;
 	}
-#endif
+
+	if (!(tp->tg3_flags3 & TG3_FLG3_5755_PLUS)) {
+		tp->tg3_flags3 |= TG3_FLG3_4G_DMA_BNDRY_BUG;
+		tp->tg3_flags3 |= TG3_FLG3_40BIT_DMA_LIMIT_BUG;
+	}
 
 	if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS) ||
 	     (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) ||
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index bab7940158e..b603810b4e9 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2759,6 +2759,8 @@ struct tg3 {
 #define TG3_FLG3_TOGGLE_10_100_L1PLLPD	0x00008000
 #define TG3_FLG3_PHY_IS_FET		0x00010000
 #define TG3_FLG3_ENABLE_RSS		0x00020000
+#define TG3_FLG3_4G_DMA_BNDRY_BUG	0x00080000
+#define TG3_FLG3_40BIT_DMA_LIMIT_BUG	0x00100000
 
 	struct timer_list		timer;
 	u16				timer_counter;