---

yaml --- r: 194773 b: refs/heads/master c: eab2abf h: refs/heads/master i: 194771: 90457f4 v: v3
git-mirror · May 6, 2010 · 7eb708f · 7eb708f
1 parent e6e6fb9
commit 7eb708f
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Showing 7 changed files with 58 additions and 11 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: edf15c17420fed108046da50b3d3ae53dfa0e0ae
+refs/heads/master: eab2abf5826b78b126826cc70e564c44816396da
diff --git a/trunk/drivers/net/e1000/e1000_ethtool.c b/trunk/drivers/net/e1000/e1000_ethtool.c
@@ -1808,7 +1808,7 @@ static int e1000_get_coalesce(struct net_device *netdev,
 	if (adapter->hw.mac_type < e1000_82545)
 		return -EOPNOTSUPP;
 
-	if (adapter->itr_setting <= 3)
+	if (adapter->itr_setting <= 4)
 		ec->rx_coalesce_usecs = adapter->itr_setting;
 	else
 		ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting;
@@ -1826,12 +1826,14 @@ static int e1000_set_coalesce(struct net_device *netdev,
 		return -EOPNOTSUPP;
 
 	if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) ||
-	    ((ec->rx_coalesce_usecs > 3) &&
+	    ((ec->rx_coalesce_usecs > 4) &&
 	     (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) ||
 	    (ec->rx_coalesce_usecs == 2))
 		return -EINVAL;
 
-	if (ec->rx_coalesce_usecs <= 3) {
+	if (ec->rx_coalesce_usecs == 4) {
+		adapter->itr = adapter->itr_setting = 4;
+	} else if (ec->rx_coalesce_usecs <= 3) {
 		adapter->itr = 20000;
 		adapter->itr_setting = ec->rx_coalesce_usecs;
 	} else {

diff --git a/trunk/drivers/net/e1000/e1000_main.c b/trunk/drivers/net/e1000/e1000_main.c
@@ -31,7 +31,7 @@
 
 char e1000_driver_name[] = "e1000";
 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
-#define DRV_VERSION "7.3.21-k5-NAPI"
+#define DRV_VERSION "7.3.21-k6-NAPI"
 const char e1000_driver_version[] = DRV_VERSION;
 static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
 
@@ -2386,6 +2386,22 @@ static void e1000_watchdog(unsigned long data)
 		}
 	}
 
+	/* Simple mode for Interrupt Throttle Rate (ITR) */
+	if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) {
+		/*
+		 * Symmetric Tx/Rx gets a reduced ITR=2000;
+		 * Total asymmetrical Tx or Rx gets ITR=8000;
+		 * everyone else is between 2000-8000.
+		 */
+		u32 goc = (adapter->gotcl + adapter->gorcl) / 10000;
+		u32 dif = (adapter->gotcl > adapter->gorcl ?
+			    adapter->gotcl - adapter->gorcl :
+			    adapter->gorcl - adapter->gotcl) / 10000;
+		u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
+
+		ew32(ITR, 1000000000 / (itr * 256));
+	}
+
 	/* Cause software interrupt to ensure rx ring is cleaned */
 	ew32(ICS, E1000_ICS_RXDMT0);
 

diff --git a/trunk/drivers/net/e1000/e1000_param.c b/trunk/drivers/net/e1000/e1000_param.c
@@ -484,11 +484,17 @@ void __devinit e1000_check_options(struct e1000_adapter *adapter)
 				adapter->itr_setting = adapter->itr;
 				adapter->itr = 20000;
 				break;
+			case 4:
+				e_dev_info("%s set to simplified "
+				           "(2000-8000) ints mode\n", opt.name);
+				adapter->itr_setting = adapter->itr;
+				break;
 			default:
 				e1000_validate_option(&adapter->itr, &opt,
 				        adapter);
-				/* save the setting, because the dynamic bits change itr */
-				/* clear the lower two bits because they are
+				/* save the setting, because the dynamic bits
+				 * change itr.
+				 * clear the lower two bits because they are
 				 * used as control */
 				adapter->itr_setting = adapter->itr & ~3;
 				break;

diff --git a/trunk/drivers/net/e1000e/ethtool.c b/trunk/drivers/net/e1000e/ethtool.c
@@ -1890,7 +1890,7 @@ static int e1000_get_coalesce(struct net_device *netdev,
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 
-	if (adapter->itr_setting <= 3)
+	if (adapter->itr_setting <= 4)
 		ec->rx_coalesce_usecs = adapter->itr_setting;
 	else
 		ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting;
@@ -1905,12 +1905,14 @@ static int e1000_set_coalesce(struct net_device *netdev,
 	struct e1000_hw *hw = &adapter->hw;
 
 	if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) ||
-	    ((ec->rx_coalesce_usecs > 3) &&
+	    ((ec->rx_coalesce_usecs > 4) &&
 	     (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) ||
 	    (ec->rx_coalesce_usecs == 2))
 		return -EINVAL;
 
-	if (ec->rx_coalesce_usecs <= 3) {
+	if (ec->rx_coalesce_usecs == 4) {
+		adapter->itr = adapter->itr_setting = 4;
+	} else if (ec->rx_coalesce_usecs <= 3) {
 		adapter->itr = 20000;
 		adapter->itr_setting = ec->rx_coalesce_usecs;
 	} else {

diff --git a/trunk/drivers/net/e1000e/netdev.c b/trunk/drivers/net/e1000e/netdev.c
@@ -52,7 +52,7 @@
 
 #include "e1000.h"
 
-#define DRV_VERSION "1.0.2-k2"
+#define DRV_VERSION "1.0.2-k4"
 char e1000e_driver_name[] = "e1000e";
 const char e1000e_driver_version[] = DRV_VERSION;
 
@@ -4070,6 +4070,22 @@ static void e1000_watchdog_task(struct work_struct *work)
 		}
 	}
 
+	/* Simple mode for Interrupt Throttle Rate (ITR) */
+	if (adapter->itr_setting == 4) {
+		/*
+		 * Symmetric Tx/Rx gets a reduced ITR=2000;
+		 * Total asymmetrical Tx or Rx gets ITR=8000;
+		 * everyone else is between 2000-8000.
+		 */
+		u32 goc = (adapter->gotc + adapter->gorc) / 10000;
+		u32 dif = (adapter->gotc > adapter->gorc ?
+			    adapter->gotc - adapter->gorc :
+			    adapter->gorc - adapter->gotc) / 10000;
+		u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
+
+		ew32(ITR, 1000000000 / (itr * 256));
+	}
+
 	/* Cause software interrupt to ensure Rx ring is cleaned */
 	if (adapter->msix_entries)
 		ew32(ICS, adapter->rx_ring->ims_val);

diff --git a/trunk/drivers/net/e1000e/param.c b/trunk/drivers/net/e1000e/param.c
@@ -351,6 +351,11 @@ void __devinit e1000e_check_options(struct e1000_adapter *adapter)
 				adapter->itr_setting = adapter->itr;
 				adapter->itr = 20000;
 				break;
+			case 4:
+				e_info("%s set to simplified (2000-8000 ints) "
+				       "mode\n", opt.name);
+				adapter->itr_setting = 4;
+				break;
 			default:
 				/*
 				 * Save the setting, because the dynamic bits