e1000 net driver update 4/6:

o Bug fix: ethtool SSET and NWAY we're broken when !netif_running.
o Cleanup: removed PPC code optimization - not needed.
o Bug fix: workaround for Dell Avalon system: change descriptor
  write-back policy to write back 16 bytes rather than 8 bytes.
o Bug fix: added mwb() to force memory transaction ordering on ia-64.
o Cleanup: misc. whitespace cleanup.

drivers/net/e1000/e1000.h

@@ -85,11 +85,7 @@ struct e1000_adapter;
 
 #define E1000_ERR(args...) printk(KERN_ERR "e1000: " args)
 
-#ifdef CONFIG_PPC
-#define E1000_MAX_INTR 1
-#else
 #define E1000_MAX_INTR 10
-#endif
 
 /* Supported Rx Buffer Sizes */
 #define E1000_RXBUFFER_2048  2048

drivers/net/e1000/e1000_ethtool.c

@@ -37,6 +37,7 @@ extern char e1000_driver_version[];
 
 extern int e1000_up(struct e1000_adapter *adapter);
 extern void e1000_down(struct e1000_adapter *adapter);
+extern void e1000_reset(struct e1000_adapter *adapter);
 
 static void
 e1000_ethtool_gset(struct e1000_adapter *adapter, struct ethtool_cmd *ecmd)
@@ -144,8 +145,11 @@ e1000_ethtool_sset(struct e1000_adapter *adapter, struct ethtool_cmd *ecmd)
 
 	/* reset the link */
 
+	if(netif_running(adapter->netdev)) {
 		e1000_down(adapter);
 		e1000_up(adapter);
+	} else
+		e1000_reset(adapter);
 
 	return 0;
 }
@@ -166,7 +170,7 @@ e1000_ethtool_gdrvinfo(struct e1000_adapter *adapter,
 {
 	strncpy(drvinfo->driver,  e1000_driver_name, 32);
 	strncpy(drvinfo->version, e1000_driver_version, 32);
-	strncpy(drvinfo->fw_version, "", 32);
+	strncpy(drvinfo->fw_version, "N/A", 32);
 	strncpy(drvinfo->bus_info, adapter->pdev->slot_name, 32);
 #define E1000_REGS_LEN 32
 	drvinfo->regdump_len  = E1000_REGS_LEN * sizeof(uint32_t);
@@ -206,7 +210,8 @@ e1000_ethtool_geeprom(struct e1000_adapter *adapter,
 	struct e1000_hw *hw = &adapter->hw;
 	int i, max_len, first_word, last_word;
 
-	if(eeprom->len == 0) return;
+	if(eeprom->len == 0) 
+		return -EINVAL;
 
 	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
 
@@ -469,8 +474,10 @@ e1000_ethtool_ioctl(struct net_device *netdev, struct ifreq *ifr)
 	case ETHTOOL_NWAY_RST: {
 		if(!capable(CAP_NET_ADMIN))
 			return -EPERM;
+		if(netif_running(netdev)) {
 			e1000_down(adapter);
 			e1000_up(adapter);
+		}
 		return 0;
 	}
 	case ETHTOOL_PHYS_ID: {

drivers/net/e1000/e1000_hw.c

@@ -48,8 +48,62 @@ static void e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t
 static uint16_t e1000_shift_in_ee_bits(struct e1000_hw *hw);
 static void e1000_setup_eeprom(struct e1000_hw *hw);
 static void e1000_standby_eeprom(struct e1000_hw *hw);
+static void e1000_clock_eeprom(struct e1000_hw *hw);
+static void e1000_cleanup_eeprom(struct e1000_hw *hw);
 static int32_t e1000_id_led_init(struct e1000_hw * hw);
 
+/******************************************************************************
+ * Set the mac type member in the hw struct.
+ * 
+ * hw - Struct containing variables accessed by shared code
+ *****************************************************************************/
+int32_t
+e1000_set_mac_type(struct e1000_hw *hw)
+{
+    DEBUGFUNC("e1000_set_mac_type");
+
+    switch (hw->device_id) {
+    case E1000_DEV_ID_82542:
+        switch (hw->revision_id) {
+        case E1000_82542_2_0_REV_ID:
+            hw->mac_type = e1000_82542_rev2_0;
+            break;
+        case E1000_82542_2_1_REV_ID:
+            hw->mac_type = e1000_82542_rev2_1;
+            break;
+        default:
+            /* Invalid 82542 revision ID */
+            return -E1000_ERR_MAC_TYPE;
+        }
+        break;
+    case E1000_DEV_ID_82543GC_FIBER:
+    case E1000_DEV_ID_82543GC_COPPER:
+        hw->mac_type = e1000_82543;
+        break;
+    case E1000_DEV_ID_82544EI_COPPER:
+    case E1000_DEV_ID_82544EI_FIBER:
+    case E1000_DEV_ID_82544GC_COPPER:
+    case E1000_DEV_ID_82544GC_LOM:
+        hw->mac_type = e1000_82544;
+        break;
+    case E1000_DEV_ID_82540EM:
+    case E1000_DEV_ID_82540EM_LOM:
+        hw->mac_type = e1000_82540;
+        break;
+    case E1000_DEV_ID_82545EM_COPPER:
+    case E1000_DEV_ID_82545EM_FIBER:
+        hw->mac_type = e1000_82545;
+        break;
+    case E1000_DEV_ID_82546EB_COPPER:
+    case E1000_DEV_ID_82546EB_FIBER:
+        hw->mac_type = e1000_82546;
+        break;
+    default:
+        /* Should never have loaded on this device */
+        return -E1000_ERR_MAC_TYPE;
+    }
+    return E1000_SUCCESS;
+}
 /******************************************************************************
  * Reset the transmit and receive units; mask and clear all interrupts.
  *
@@ -239,6 +293,8 @@ e1000_init_hw(struct e1000_hw *hw)
             PCIX_COMMAND_MMRBC_SHIFT;
         stat_mmrbc = (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
             PCIX_STATUS_HI_MMRBC_SHIFT;
+        if(stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
+            stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
         if(cmd_mmrbc > stat_mmrbc) {
             pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
             pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
@@ -249,6 +305,13 @@ e1000_init_hw(struct e1000_hw *hw)
     /* Call a subroutine to configure the link and setup flow control. */
     ret_val = e1000_setup_link(hw);
 
+    /* Set the transmit descriptor write-back policy */
+    if(hw->mac_type > e1000_82544) {
+        ctrl = E1000_READ_REG(hw, TXDCTL);
+        ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH) | E1000_TXDCTL_FULL_TX_DESC_WB;
+        E1000_WRITE_REG(hw, TXDCTL, ctrl);
+    }
+
     /* Clear all of the statistics registers (clear on read).  It is
      * important that we do this after we have tried to establish link
      * because the symbol error count will increment wildly if there
@@ -374,7 +437,6 @@ e1000_setup_link(struct e1000_hw *hw)
  * Sets up link for a fiber based adapter
  *
  * hw - Struct containing variables accessed by shared code
- * ctrl - Current value of the device control register
  *
  * Manipulates Physical Coding Sublayer functions in order to configure
  * link. Assumes the hardware has been previously reset and the transmitter
@@ -505,7 +567,6 @@ e1000_setup_fiber_link(struct e1000_hw *hw)
 * Detects which PHY is present and the speed and duplex
 *
 * hw - Struct containing variables accessed by shared code
-* ctrl - current value of the device control register
 ******************************************************************************/
 static int32_t 
 e1000_setup_copper_link(struct e1000_hw *hw)

drivers/net/e1000/e1000_hw.h

@@ -42,7 +42,8 @@ struct e1000_hw_stats;
 /* Enumerated types specific to the e1000 hardware */
 /* Media Access Controlers */
 typedef enum {
-    e1000_82542_rev2_0 = 0,
+    e1000_undefined = 0,
+    e1000_82542_rev2_0,
     e1000_82542_rev2_1,
     e1000_82543,
     e1000_82544,
@@ -164,11 +165,13 @@ struct e1000_phy_stats {
 #define E1000_ERR_PHY      2
 #define E1000_ERR_CONFIG   3
 #define E1000_ERR_PARAM    4
+#define E1000_ERR_MAC_TYPE 5
 
 /* Function prototypes */
 /* Initialization */
 void e1000_reset_hw(struct e1000_hw *hw);
 int32_t e1000_init_hw(struct e1000_hw *hw);
+int32_t e1000_set_mac_type(struct e1000_hw *hw);
 
 /* Link Configuration */
 int32_t e1000_setup_link(struct e1000_hw *hw);
@@ -1185,6 +1188,7 @@ struct e1000_hw {
 #define E1000_TXDCTL_WTHRESH 0x00FF0000 /* TXDCTL Writeback Threshold */
 #define E1000_TXDCTL_GRAN    0x01000000 /* TXDCTL Granularity */
 #define E1000_TXDCTL_LWTHRESH 0xFE000000 /* TXDCTL Low Threshold */
+#define E1000_TXDCTL_FULL_TX_DESC_WB 0x01010000 /* GRAN=1, WTHRESH=1 */
 
 /* Transmit Configuration Word */
 #define E1000_TXCW_FD         0x00000020        /* TXCW full duplex */
@@ -1424,6 +1428,8 @@ struct e1000_hw {
 #define PCIX_COMMAND_MMRBC_SHIFT     0x2
 #define PCIX_STATUS_HI_MMRBC_MASK    0x0060
 #define PCIX_STATUS_HI_MMRBC_SHIFT   0x5
+#define PCIX_STATUS_HI_MMRBC_4K      0x3
+#define PCIX_STATUS_HI_MMRBC_2K      0x2
 
 
 /* The number of bits that we need to shift right to move the "pause"

drivers/net/e1000/e1000_main.c

@@ -30,6 +30,20 @@
 #include "e1000.h"
 
 /* Change Log
+ *
+ * 4.3.15      8/9/02
+ *   o Converted from Dual BSD/GPL license to GPL license.
+ *   o Clean up: use pci_[clear|set]_mwi rather than direct calls to
+ *     pci_write_config_word.
+ *   o Bug fix: added read-behind-write calls to post writes before delays.
+ *   o Bug fix: removed mdelay busy-waits in interrupt context.
+ *   o Clean up: direct clear of descriptor bits rather than using memset.
+ *   o Bug fix: added wmb() for ia-64 between descritor writes and advancing
+ *     descriptor tail.
+ *   o Feature: added locking mechanism for asf functionality.
+ *   o Feature: exposed two Tx and one Rx interrupt delay knobs for finer
+ *     control over interurpt rate tuning.
+ *   o Misc ethtool bug fixes.
  *         
  * 4.3.2       7/5/02
  *   o Bug fix: perform controller reset using I/O rather than mmio because
@@ -54,7 +68,7 @@
  
 char e1000_driver_name[] = "e1000";
 char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
-char e1000_driver_version[] = "4.3.2-k1";
+char e1000_driver_version[] = "4.3.15-k1";
 char e1000_copyright[] = "Copyright (c) 1999-2002 Intel Corporation.";
 
 /* e1000_pci_tbl - PCI Device ID Table
@@ -545,43 +559,8 @@ e1000_sw_init(struct e1000_adapter *adapter)
 
 	/* identify the MAC */
 
-	switch (hw->device_id) {
-	case E1000_DEV_ID_82542:
-		switch (hw->revision_id) {
-		case E1000_82542_2_0_REV_ID:
-			hw->mac_type = e1000_82542_rev2_0;
-			break;
-		case E1000_82542_2_1_REV_ID:
-			hw->mac_type = e1000_82542_rev2_1;
-			break;
-		default:
-			hw->mac_type = e1000_82542_rev2_0;
-			E1000_ERR("Could not identify 82542 revision\n");
-		}
-		break;
-	case E1000_DEV_ID_82543GC_FIBER:
-	case E1000_DEV_ID_82543GC_COPPER:
-		hw->mac_type = e1000_82543;
-		break;
-	case E1000_DEV_ID_82544EI_COPPER:
-	case E1000_DEV_ID_82544EI_FIBER:
-	case E1000_DEV_ID_82544GC_COPPER:
-	case E1000_DEV_ID_82544GC_LOM:
-		hw->mac_type = e1000_82544;
-		break;
-	case E1000_DEV_ID_82540EM:
-		hw->mac_type = e1000_82540;
-		break;
-	case E1000_DEV_ID_82545EM_COPPER:
-	case E1000_DEV_ID_82545EM_FIBER:
-		hw->mac_type = e1000_82545;
-		break;
-	case E1000_DEV_ID_82546EB_COPPER:
-	case E1000_DEV_ID_82546EB_FIBER:
-		hw->mac_type = e1000_82546;
-		break;
-	default:
-		E1000_ERR("Should never have loaded on this device\n");
+	if (e1000_set_mac_type(hw)) {
+		E1000_ERR("Unknown MAC Type\n");
 		BUG();
 	}
 
@@ -1415,9 +1394,14 @@ e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags)
 
 	tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP);
 
+	/* Force memory writes to complete before letting h/w
+	 * know there are new descriptors to fetch.  (Only
+	 * applicable for weak-ordered memory model archs,
+	 * such as IA-64). */
+	wmb();
+
 	tx_ring->next_to_use = i;
 	E1000_WRITE_REG(&adapter->hw, TDT, i);
-	E1000_WRITE_FLUSH(&adapter->hw);
 }
 
 #define TXD_USE_COUNT(S, X) (((S) / (X)) + (((S) % (X)) ? 1 : 0))
@@ -1937,8 +1921,15 @@ e1000_alloc_rx_buffers(struct e1000_adapter *adapter)
 
 		rx_desc->buffer_addr = cpu_to_le64(rx_ring->buffer_info[i].dma);
 
-		if(!(i % E1000_RX_BUFFER_WRITE))
+		if(!(i % E1000_RX_BUFFER_WRITE)) {
+			/* Force memory writes to complete before letting h/w
+			 * know there are new descriptors to fetch.  (Only
+			 * applicable for weak-ordered memory model archs,
+			 * such as IA-64). */
+			wmb();
+
 			E1000_WRITE_REG(&adapter->hw, RDT, i);
+		}
 
 		i = (i + 1) % rx_ring->count;
 	}

drivers/net/e1000/e1000_osdep.h

@@ -96,6 +96,6 @@ typedef enum {
         readl((a)->hw_addr + E1000_##reg + ((offset) << 2)) : \
         readl((a)->hw_addr + E1000_82542_##reg + ((offset) << 2)))
 
-#define E1000_WRITE_FLUSH(a) E1000_READ_REG(a, STATUS);
+#define E1000_WRITE_FLUSH(a) ((void)E1000_READ_REG(a, STATUS))
 
 #endif /* _E1000_OSDEP_H_ */