---

yaml --- r: 134424 b: refs/heads/master c: 5df3f0e h: refs/heads/master v: v3
git-mirror · Feb 11, 2009 · 88859b3 · 88859b3
1 parent f248fe0
commit 88859b3
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Showing 3 changed files with 14 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 111b9dc5c981ba608b4afede37237cfeb67b07f2
+refs/heads/master: 5df3f0eaf8b236cc785e2733a3df1e5c84e4aad8
diff --git a/trunk/drivers/net/e1000e/82571.c b/trunk/drivers/net/e1000e/82571.c
@@ -980,6 +980,18 @@ static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw)
 		reg |= E1000_PBA_ECC_CORR_EN;
 		ew32(PBA_ECC, reg);
 	}
+	/*
+	 * Workaround for hardware errata.
+	 * Ensure that DMA Dynamic Clock gating is disabled on 82571 and 82572
+	 */
+
+        if ((hw->mac.type == e1000_82571) ||
+           (hw->mac.type == e1000_82572)) {
+                reg = er32(CTRL_EXT);
+                reg &= ~E1000_CTRL_EXT_DMA_DYN_CLK_EN;
+                ew32(CTRL_EXT, reg);
+        }
+
 
 	/* PCI-Ex Control Registers */
 	if (hw->mac.type == e1000_82574) {

diff --git a/trunk/drivers/net/e1000e/defines.h b/trunk/drivers/net/e1000e/defines.h
@@ -69,6 +69,7 @@
 #define E1000_CTRL_EXT_SDP7_DATA 0x00000080 /* Value of SW Definable Pin 7 */
 #define E1000_CTRL_EXT_EE_RST    0x00002000 /* Reinitialize from EEPROM */
 #define E1000_CTRL_EXT_RO_DIS    0x00020000 /* Relaxed Ordering disable */
+#define E1000_CTRL_EXT_DMA_DYN_CLK_EN 0x00080000 /* DMA Dynamic Clock Gating */
 #define E1000_CTRL_EXT_LINK_MODE_MASK 0x00C00000
 #define E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES  0x00C00000
 #define E1000_CTRL_EXT_EIAME          0x01000000