1 files changed, 78 insertions, 23 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index d2439b85a79..71d2c5cfdad 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -66,8 +66,8 @@
 
 #define DRV_MODULE_NAME		"tg3"
 #define PFX DRV_MODULE_NAME	": "
-#define DRV_MODULE_VERSION	"3.93"
-#define DRV_MODULE_RELDATE	"May 22, 2008"
+#define DRV_MODULE_VERSION	"3.94"
+#define DRV_MODULE_RELDATE	"August 14, 2008"
 
 #define TG3_DEF_MAC_MODE	0
 #define TG3_DEF_RX_MODE		0
@@ -536,6 +536,7 @@ static int tg3_ape_lock(struct tg3 *tp, int locknum)
 		return 0;
 
 	switch (locknum) {
+		case TG3_APE_LOCK_GRC:
 		case TG3_APE_LOCK_MEM:
 			break;
 		default:
@@ -573,6 +574,7 @@ static void tg3_ape_unlock(struct tg3 *tp, int locknum)
 		return;
 
 	switch (locknum) {
+		case TG3_APE_LOCK_GRC:
 		case TG3_APE_LOCK_MEM:
 			break;
 		default:
@@ -1018,15 +1020,43 @@ static void tg3_mdio_fini(struct tg3 *tp)
 }
 
 /* tp->lock is held. */
+static inline void tg3_generate_fw_event(struct tg3 *tp)
+{
+	u32 val;
+
+	val = tr32(GRC_RX_CPU_EVENT);
+	val |= GRC_RX_CPU_DRIVER_EVENT;
+	tw32_f(GRC_RX_CPU_EVENT, val);
+
+	tp->last_event_jiffies = jiffies;
+}
+
+#define TG3_FW_EVENT_TIMEOUT_USEC 2500
+
+/* tp->lock is held. */
 static void tg3_wait_for_event_ack(struct tg3 *tp)
 {
 	int i;
+	unsigned int delay_cnt;
+	long time_remain;
+
+	/* If enough time has passed, no wait is necessary. */
+	time_remain = (long)(tp->last_event_jiffies + 1 +
+		      usecs_to_jiffies(TG3_FW_EVENT_TIMEOUT_USEC)) -
+		      (long)jiffies;
+	if (time_remain < 0)
+		return;
 
-	/* Wait for up to 2.5 milliseconds */
-	for (i = 0; i < 250000; i++) {
+	/* Check if we can shorten the wait time. */
+	delay_cnt = jiffies_to_usecs(time_remain);
+	if (delay_cnt > TG3_FW_EVENT_TIMEOUT_USEC)
+		delay_cnt = TG3_FW_EVENT_TIMEOUT_USEC;
+	delay_cnt = (delay_cnt >> 3) + 1;
+
+	for (i = 0; i < delay_cnt; i++) {
 		if (!(tr32(GRC_RX_CPU_EVENT) & GRC_RX_CPU_DRIVER_EVENT))
 			break;
-		udelay(10);
+		udelay(8);
 	}
 }
 
@@ -1075,9 +1105,7 @@ static void tg3_ump_link_report(struct tg3 *tp)
 		val = 0;
 	tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX + 12, val);
 
-	val = tr32(GRC_RX_CPU_EVENT);
-	val |= GRC_RX_CPU_DRIVER_EVENT;
-	tw32_f(GRC_RX_CPU_EVENT, val);
+	tg3_generate_fw_event(tp);
 }
 
 static void tg3_link_report(struct tg3 *tp)
@@ -2124,6 +2152,13 @@ static int tg3_set_power_state(struct tg3 *tp, pci_power_t state)
 		     (tp->tg3_flags & TG3_FLAG_WOL_ENABLE))
 			mac_mode |= MAC_MODE_MAGIC_PKT_ENABLE;
 
+		if (tp->tg3_flags3 & TG3_FLG3_ENABLE_APE) {
+			mac_mode |= tp->mac_mode &
+				    (MAC_MODE_APE_TX_EN | MAC_MODE_APE_RX_EN);
+			if (mac_mode & MAC_MODE_APE_TX_EN)
+				mac_mode |= MAC_MODE_TDE_ENABLE;
+		}
+
 		tw32_f(MAC_MODE, mac_mode);
 		udelay(100);
 
@@ -5493,7 +5528,7 @@ static void tg3_ape_send_event(struct tg3 *tp, u32 event)
 		return;
 
 	apedata = tg3_ape_read32(tp, TG3_APE_FW_STATUS);
-	if (apedata != APE_FW_STATUS_READY)
+	if (!(apedata & APE_FW_STATUS_READY))
 		return;
 
 	/* Wait for up to 1 millisecond for APE to service previous event. */
@@ -5760,6 +5795,8 @@ static int tg3_chip_reset(struct tg3 *tp)
 
 	tg3_mdio_stop(tp);
 
+	tg3_ape_lock(tp, TG3_APE_LOCK_GRC);
+
 	/* No matching tg3_nvram_unlock() after this because
 	 * chip reset below will undo the nvram lock.
 	 */
@@ -5908,12 +5945,19 @@ static int tg3_chip_reset(struct tg3 *tp)
 	} else if (tp->tg3_flags2 & TG3_FLG2_MII_SERDES) {
 		tp->mac_mode = MAC_MODE_PORT_MODE_GMII;
 		tw32_f(MAC_MODE, tp->mac_mode);
+	} else if (tp->tg3_flags3 & TG3_FLG3_ENABLE_APE) {
+		tp->mac_mode &= (MAC_MODE_APE_TX_EN | MAC_MODE_APE_RX_EN);
+		if (tp->mac_mode & MAC_MODE_APE_TX_EN)
+			tp->mac_mode |= MAC_MODE_TDE_ENABLE;
+		tw32_f(MAC_MODE, tp->mac_mode);
 	} else
 		tw32_f(MAC_MODE, 0);
 	udelay(40);
 
 	tg3_mdio_start(tp);
 
+	tg3_ape_unlock(tp, TG3_APE_LOCK_GRC);
+
 	err = tg3_poll_fw(tp);
 	if (err)
 		return err;
@@ -5935,6 +5979,7 @@ static int tg3_chip_reset(struct tg3 *tp)
 		tg3_read_mem(tp, NIC_SRAM_DATA_CFG, &nic_cfg);
 		if (nic_cfg & NIC_SRAM_DATA_CFG_ASF_ENABLE) {
 			tp->tg3_flags |= TG3_FLAG_ENABLE_ASF;
+			tp->last_event_jiffies = jiffies;
 			if (tp->tg3_flags2 & TG3_FLG2_5750_PLUS)
 				tp->tg3_flags2 |= TG3_FLG2_ASF_NEW_HANDSHAKE;
 		}
@@ -5948,15 +5993,12 @@ static void tg3_stop_fw(struct tg3 *tp)
 {
 	if ((tp->tg3_flags & TG3_FLAG_ENABLE_ASF) &&
 	   !(tp->tg3_flags3 & TG3_FLG3_ENABLE_APE)) {
-		u32 val;
-
 		/* Wait for RX cpu to ACK the previous event. */
 		tg3_wait_for_event_ack(tp);
 
 		tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX, FWCMD_NICDRV_PAUSE_FW);
-		val = tr32(GRC_RX_CPU_EVENT);
-		val |= GRC_RX_CPU_DRIVER_EVENT;
-		tw32(GRC_RX_CPU_EVENT, val);
+
+		tg3_generate_fw_event(tp);
 
 		/* Wait for RX cpu to ACK this event. */
 		tg3_wait_for_event_ack(tp);
@@ -7406,7 +7448,11 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 		udelay(10);
 	}
 
-	tp->mac_mode = MAC_MODE_TXSTAT_ENABLE | MAC_MODE_RXSTAT_ENABLE |
+	if (tp->tg3_flags3 & TG3_FLG3_ENABLE_APE)
+		tp->mac_mode &= MAC_MODE_APE_TX_EN | MAC_MODE_APE_RX_EN;
+	else
+		tp->mac_mode = 0;
+	tp->mac_mode |= MAC_MODE_TXSTAT_ENABLE | MAC_MODE_RXSTAT_ENABLE |
 		MAC_MODE_TDE_ENABLE | MAC_MODE_RDE_ENABLE | MAC_MODE_FHDE_ENABLE;
 	if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS) &&
 	    !(tp->tg3_flags2 & TG3_FLG2_PHY_SERDES) &&
@@ -7840,9 +7886,8 @@ static void tg3_timer(unsigned long __opaque)
 	 * resets.
 	 */
 	if (!--tp->asf_counter) {
-		if (tp->tg3_flags & TG3_FLAG_ENABLE_ASF) {
-			u32 val;
-
+		if ((tp->tg3_flags & TG3_FLAG_ENABLE_ASF) &&
+		    !(tp->tg3_flags3 & TG3_FLG3_ENABLE_APE)) {
 			tg3_wait_for_event_ack(tp);
 
 			tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX,
@@ -7850,9 +7895,8 @@ static void tg3_timer(unsigned long __opaque)
 			tg3_write_mem(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 4);
 			/* 5 seconds timeout */
 			tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX, 5);
-			val = tr32(GRC_RX_CPU_EVENT);
-			val |= GRC_RX_CPU_DRIVER_EVENT;
-			tw32_f(GRC_RX_CPU_EVENT, val);
+
+			tg3_generate_fw_event(tp);
 		}
 		tp->asf_counter = tp->asf_multiplier;
 	}
@@ -8422,6 +8466,11 @@ static inline unsigned long get_stat64(tg3_stat64_t *val)
 	return ret;
 }
 
+static inline u64 get_estat64(tg3_stat64_t *val)
+{
+       return ((u64)val->high << 32) | ((u64)val->low);
+}
+
 static unsigned long calc_crc_errors(struct tg3 *tp)
 {
 	struct tg3_hw_stats *hw_stats = tp->hw_stats;
@@ -8450,7 +8499,7 @@ static unsigned long calc_crc_errors(struct tg3 *tp)
 
 #define ESTAT_ADD(member) \
 	estats->member =	old_estats->member + \
-				get_stat64(&hw_stats->member)
+				get_estat64(&hw_stats->member)
 
 static struct tg3_ethtool_stats *tg3_get_estats(struct tg3 *tp)
 {
@@ -12416,6 +12465,13 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 				       tp->misc_host_ctrl);
 	}
 
+	/* Preserve the APE MAC_MODE bits */
+	if (tp->tg3_flags3 & TG3_FLG3_ENABLE_APE)
+		tp->mac_mode = tr32(MAC_MODE) |
+			       MAC_MODE_APE_TX_EN | MAC_MODE_APE_RX_EN;
+	else
+		tp->mac_mode = TG3_DEF_MAC_MODE;
+
 	/* these are limited to 10/100 only */
 	if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 &&
 	     (grc_misc_cfg == 0x8000 || grc_misc_cfg == 0x4000)) ||
@@ -13275,7 +13331,6 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
 	tp->pdev = pdev;
 	tp->dev = dev;
 	tp->pm_cap = pm_cap;
-	tp->mac_mode = TG3_DEF_MAC_MODE;
 	tp->rx_mode = TG3_DEF_RX_MODE;
 	tp->tx_mode = TG3_DEF_TX_MODE;