Manual merge with Linus

1 files changed, 132 insertions, 70 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index af8263a1580e..dc57352e5a97 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -36,6 +36,7 @@
 #include <linux/ip.h>
 #include <linux/tcp.h>
 #include <linux/workqueue.h>
+#include <linux/prefetch.h>
 
 #include <net/checksum.h>
 
@@ -66,8 +67,8 @@
 
 #define DRV_MODULE_NAME		"tg3"
 #define PFX DRV_MODULE_NAME	": "
-#define DRV_MODULE_VERSION	"3.37"
-#define DRV_MODULE_RELDATE	"August 25, 2005"
+#define DRV_MODULE_VERSION	"3.39"
+#define DRV_MODULE_RELDATE	"September 5, 2005"
 
 #define TG3_DEF_MAC_MODE	0
 #define TG3_DEF_RX_MODE		0
@@ -121,12 +122,9 @@
 			           TG3_RX_RCB_RING_SIZE(tp))
 #define TG3_TX_RING_BYTES	(sizeof(struct tg3_tx_buffer_desc) * \
 				 TG3_TX_RING_SIZE)
-#define TX_RING_GAP(TP)	\
-	(TG3_TX_RING_SIZE - (TP)->tx_pending)
 #define TX_BUFFS_AVAIL(TP)						\
-	(((TP)->tx_cons <= (TP)->tx_prod) ?				\
-	  (TP)->tx_cons + (TP)->tx_pending - (TP)->tx_prod :		\
-	  (TP)->tx_cons - (TP)->tx_prod - TX_RING_GAP(TP))
+	((TP)->tx_pending -						\
+	 (((TP)->tx_prod - (TP)->tx_cons) & (TG3_TX_RING_SIZE - 1)))
 #define NEXT_TX(N)		(((N) + 1) & (TG3_TX_RING_SIZE - 1))
 
 #define RX_PKT_BUF_SZ		(1536 + tp->rx_offset + 64)
@@ -490,7 +488,8 @@ static void tg3_disable_ints(struct tg3 *tp)
 
 static inline void tg3_cond_int(struct tg3 *tp)
 {
-	if (tp->hw_status->status & SD_STATUS_UPDATED)
+	if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) &&
+	    (tp->hw_status->status & SD_STATUS_UPDATED))
 		tw32(GRC_LOCAL_CTRL, tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
 }
 
@@ -2880,9 +2879,13 @@ static void tg3_tx(struct tg3 *tp)
 
 	tp->tx_cons = sw_idx;
 
-	if (netif_queue_stopped(tp->dev) &&
-	    (TX_BUFFS_AVAIL(tp) > TG3_TX_WAKEUP_THRESH))
-		netif_wake_queue(tp->dev);
+	if (unlikely(netif_queue_stopped(tp->dev))) {
+		spin_lock(&tp->tx_lock);
+		if (netif_queue_stopped(tp->dev) &&
+		    (TX_BUFFS_AVAIL(tp) > TG3_TX_WAKEUP_THRESH))
+			netif_wake_queue(tp->dev);
+		spin_unlock(&tp->tx_lock);
+	}
 }
 
 /* Returns size of skb allocated or < 0 on error.
@@ -3198,9 +3201,7 @@ static int tg3_poll(struct net_device *netdev, int *budget)
 
 	/* run TX completion thread */
 	if (sblk->idx[0].tx_consumer != tp->tx_cons) {
-		spin_lock(&tp->tx_lock);
 		tg3_tx(tp);
-		spin_unlock(&tp->tx_lock);
 	}
 
 	/* run RX thread, within the bounds set by NAPI.
@@ -3220,18 +3221,17 @@ static int tg3_poll(struct net_device *netdev, int *budget)
 		netdev->quota -= work_done;
 	}
 
-	if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)
+	if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) {
 		tp->last_tag = sblk->status_tag;
-	rmb();
-	sblk->status &= ~SD_STATUS_UPDATED;
+		rmb();
+	} else
+		sblk->status &= ~SD_STATUS_UPDATED;
 
 	/* if no more work, tell net stack and NIC we're done */
 	done = !tg3_has_work(tp);
 	if (done) {
-		spin_lock(&tp->lock);
 		netif_rx_complete(netdev);
 		tg3_restart_ints(tp);
-		spin_unlock(&tp->lock);
 	}
 
 	return (done ? 0 : 1);
@@ -3279,8 +3279,9 @@ static irqreturn_t tg3_msi(int irq, void *dev_id, struct pt_regs *regs)
 {
 	struct net_device *dev = dev_id;
 	struct tg3 *tp = netdev_priv(dev);
-	struct tg3_hw_status *sblk = tp->hw_status;
 
+	prefetch(tp->hw_status);
+	prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]);
 	/*
 	 * Writing any value to intr-mbox-0 clears PCI INTA# and
 	 * chip-internal interrupt pending events.
@@ -3289,19 +3290,9 @@ static irqreturn_t tg3_msi(int irq, void *dev_id, struct pt_regs *regs)
 	 * event coalescing.
 	 */
 	tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001);
-	tp->last_tag = sblk->status_tag;
-	rmb();
-	if (tg3_irq_sync(tp))
-		goto out;
-	sblk->status &= ~SD_STATUS_UPDATED;
-	if (likely(tg3_has_work(tp)))
+	if (likely(!tg3_irq_sync(tp)))
 		netif_rx_schedule(dev);		/* schedule NAPI poll */
-	else {
-		/* No work, re-enable interrupts.  */
-		tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
-			     tp->last_tag << 24);
-	}
-out:
+
 	return IRQ_RETVAL(1);
 }
 
@@ -3331,9 +3322,10 @@ static irqreturn_t tg3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 		if (tg3_irq_sync(tp))
 			goto out;
 		sblk->status &= ~SD_STATUS_UPDATED;
-		if (likely(tg3_has_work(tp)))
+		if (likely(tg3_has_work(tp))) {
+			prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]);
 			netif_rx_schedule(dev);		/* schedule NAPI poll */
-		else {
+		} else {
 			/* No work, shared interrupt perhaps?  re-enable
 			 * interrupts, and flush that PCI write
 			 */
@@ -3359,7 +3351,7 @@ static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id, struct pt_regs *r
 	 * Reading the PCI State register will confirm whether the
 	 * interrupt is ours and will flush the status block.
 	 */
-	if ((sblk->status & SD_STATUS_UPDATED) ||
+	if ((sblk->status_tag != tp->last_tag) ||
 	    !(tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
 		/*
 		 * writing any value to intr-mbox-0 clears PCI INTA# and
@@ -3370,19 +3362,17 @@ static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id, struct pt_regs *r
 		 */
 		tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
 			     0x00000001);
-		tp->last_tag = sblk->status_tag;
-		rmb();
 		if (tg3_irq_sync(tp))
 			goto out;
-		sblk->status &= ~SD_STATUS_UPDATED;
-		if (likely(tg3_has_work(tp)))
-			netif_rx_schedule(dev);		/* schedule NAPI poll */
-		else {
-			/* no work, shared interrupt perhaps?  re-enable
-			 * interrupts, and flush that PCI write
+		if (netif_rx_schedule_prep(dev)) {
+			prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]);
+			/* Update last_tag to mark that this status has been
+			 * seen. Because interrupt may be shared, we may be
+			 * racing with tg3_poll(), so only update last_tag
+			 * if tg3_poll() is not scheduled.
 			 */
-			tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
-				       tp->last_tag << 24);
+			tp->last_tag = sblk->status_tag;
+			__netif_rx_schedule(dev);
 		}
 	} else {	/* shared interrupt */
 		handled = 0;
@@ -3716,8 +3706,11 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	tw32_tx_mbox((MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW), entry);
 
 	tp->tx_prod = entry;
-	if (TX_BUFFS_AVAIL(tp) <= (MAX_SKB_FRAGS + 1))
+	if (TX_BUFFS_AVAIL(tp) <= (MAX_SKB_FRAGS + 1)) {
 		netif_stop_queue(dev);
+		if (TX_BUFFS_AVAIL(tp) > TG3_TX_WAKEUP_THRESH)
+			netif_wake_queue(tp->dev);
+	}
 
 out_unlock:
     	mmiowb();
@@ -5960,7 +5953,7 @@ static int tg3_reset_hw(struct tg3 *tp)
 	tw32(MAC_LED_CTRL, tp->led_ctrl);
 
 	tw32(MAC_MI_STAT, MAC_MI_STAT_LNKSTAT_ATTN_ENAB);
-	if (tp->tg3_flags2 & TG3_FLG2_PHY_SERDES) {
+	if (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES) {
 		tw32_f(MAC_RX_MODE, RX_MODE_RESET);
 		udelay(10);
 	}
@@ -6242,6 +6235,7 @@ static int tg3_test_interrupt(struct tg3 *tp)
 	if (err)
 		return err;
 
+	tp->hw_status->status &= ~SD_STATUS_UPDATED;
 	tg3_enable_ints(tp);
 
 	tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
@@ -7557,6 +7551,38 @@ static void tg3_get_strings (struct net_device *dev, u32 stringset, u8 *buf)
 	}
 }
 
+static int tg3_phys_id(struct net_device *dev, u32 data)
+{
+	struct tg3 *tp = netdev_priv(dev);
+	int i;
+
+	if (!netif_running(tp->dev))
+		return -EAGAIN;
+
+	if (data == 0)
+		data = 2;
+
+	for (i = 0; i < (data * 2); i++) {
+		if ((i % 2) == 0)
+			tw32(MAC_LED_CTRL, LED_CTRL_LNKLED_OVERRIDE |
+					   LED_CTRL_1000MBPS_ON |
+					   LED_CTRL_100MBPS_ON |
+					   LED_CTRL_10MBPS_ON |
+					   LED_CTRL_TRAFFIC_OVERRIDE |
+					   LED_CTRL_TRAFFIC_BLINK |
+					   LED_CTRL_TRAFFIC_LED);
+	
+		else
+			tw32(MAC_LED_CTRL, LED_CTRL_LNKLED_OVERRIDE |
+					   LED_CTRL_TRAFFIC_OVERRIDE);
+
+		if (msleep_interruptible(500))
+			break;
+	}
+	tw32(MAC_LED_CTRL, tp->led_ctrl);
+	return 0;
+}
+
 static void tg3_get_ethtool_stats (struct net_device *dev,
 				   struct ethtool_stats *estats, u64 *tmp_stats)
 {
@@ -7616,7 +7642,7 @@ static int tg3_test_link(struct tg3 *tp)
 	if (!netif_running(tp->dev))
 		return -ENODEV;
 
-	if (tp->tg3_flags2 & TG3_FLG2_PHY_SERDES)
+	if (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES)
 		max = TG3_SERDES_TIMEOUT_SEC;
 	else
 		max = TG3_COPPER_TIMEOUT_SEC;
@@ -7901,9 +7927,12 @@ static int tg3_test_memory(struct tg3 *tp)
 	return err;
 }
 
-static int tg3_test_loopback(struct tg3 *tp)
+#define TG3_MAC_LOOPBACK	0
+#define TG3_PHY_LOOPBACK	1
+
+static int tg3_run_loopback(struct tg3 *tp, int loopback_mode)
 {
-	u32 mac_mode, send_idx, rx_start_idx, rx_idx, tx_idx, opaque_key;
+	u32 mac_mode, rx_start_idx, rx_idx, tx_idx, opaque_key;
 	u32 desc_idx;
 	struct sk_buff *skb, *rx_skb;
 	u8 *tx_data;
@@ -7911,18 +7940,26 @@ static int tg3_test_loopback(struct tg3 *tp)
 	int num_pkts, tx_len, rx_len, i, err;
 	struct tg3_rx_buffer_desc *desc;
 
-	if (!netif_running(tp->dev))
-		return -ENODEV;
+	if (loopback_mode == TG3_MAC_LOOPBACK) {
+		mac_mode = (tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK) |
+			   MAC_MODE_PORT_INT_LPBACK | MAC_MODE_LINK_POLARITY |
+			   MAC_MODE_PORT_MODE_GMII;
+		tw32(MAC_MODE, mac_mode);
+	} else if (loopback_mode == TG3_PHY_LOOPBACK) {
+		mac_mode = (tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK) |
+			   MAC_MODE_LINK_POLARITY | MAC_MODE_PORT_MODE_GMII;
+		if ((tp->phy_id & PHY_ID_MASK) == PHY_ID_BCM5401)
+			mac_mode &= ~MAC_MODE_LINK_POLARITY;
+		tw32(MAC_MODE, mac_mode);
+
+		tg3_writephy(tp, MII_BMCR, BMCR_LOOPBACK | BMCR_FULLDPLX |
+					   BMCR_SPEED1000);
+	}
+	else
+		return -EINVAL;
 
 	err = -EIO;
 
-	tg3_reset_hw(tp);
-
-	mac_mode = (tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK) |
-		   MAC_MODE_PORT_INT_LPBACK | MAC_MODE_LINK_POLARITY |
-		   MAC_MODE_PORT_MODE_GMII;
-	tw32(MAC_MODE, mac_mode);
-
 	tx_len = 1514;
 	skb = dev_alloc_skb(tx_len);
 	tx_data = skb_put(skb, tx_len);
@@ -7943,15 +7980,15 @@ static int tg3_test_loopback(struct tg3 *tp)
 
 	rx_start_idx = tp->hw_status->idx[0].rx_producer;
 
-	send_idx = 0;
 	num_pkts = 0;
 
-	tg3_set_txd(tp, send_idx, map, tx_len, 0, 1);
+	tg3_set_txd(tp, tp->tx_prod, map, tx_len, 0, 1);
 
-	send_idx++;
+	tp->tx_prod++;
 	num_pkts++;
 
-	tw32_tx_mbox(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW, send_idx);
+	tw32_tx_mbox(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW,
+		     tp->tx_prod);
 	tr32_mailbox(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW);
 
 	udelay(10);
@@ -7964,7 +8001,7 @@ static int tg3_test_loopback(struct tg3 *tp)
 
 		tx_idx = tp->hw_status->idx[0].tx_consumer;
 		rx_idx = tp->hw_status->idx[0].rx_producer;
-		if ((tx_idx == send_idx) &&
+		if ((tx_idx == tp->tx_prod) &&
 		    (rx_idx == (rx_start_idx + num_pkts)))
 			break;
 	}
@@ -7972,7 +8009,7 @@ static int tg3_test_loopback(struct tg3 *tp)
 	pci_unmap_single(tp->pdev, map, tx_len, PCI_DMA_TODEVICE);
 	dev_kfree_skb(skb);
 
-	if (tx_idx != send_idx)
+	if (tx_idx != tp->tx_prod)
 		goto out;
 
 	if (rx_idx != rx_start_idx + num_pkts)
@@ -8008,6 +8045,30 @@ out:
 	return err;
 }
 
+#define TG3_MAC_LOOPBACK_FAILED		1
+#define TG3_PHY_LOOPBACK_FAILED		2
+#define TG3_LOOPBACK_FAILED		(TG3_MAC_LOOPBACK_FAILED |	\
+					 TG3_PHY_LOOPBACK_FAILED)
+
+static int tg3_test_loopback(struct tg3 *tp)
+{
+	int err = 0;
+
+	if (!netif_running(tp->dev))
+		return TG3_LOOPBACK_FAILED;
+
+	tg3_reset_hw(tp);
+
+	if (tg3_run_loopback(tp, TG3_MAC_LOOPBACK))
+		err |= TG3_MAC_LOOPBACK_FAILED;
+	if (!(tp->tg3_flags2 & TG3_FLG2_PHY_SERDES)) {
+		if (tg3_run_loopback(tp, TG3_PHY_LOOPBACK))
+			err |= TG3_PHY_LOOPBACK_FAILED;
+	}
+
+	return err;
+}
+
 static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
 			  u64 *data)
 {
@@ -8048,10 +8109,8 @@ static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
 			etest->flags |= ETH_TEST_FL_FAILED;
 			data[3] = 1;
 		}
-		if (tg3_test_loopback(tp) != 0) {
+		if ((data[4] = tg3_test_loopback(tp)) != 0)
 			etest->flags |= ETH_TEST_FL_FAILED;
-			data[4] = 1;
-		}
 
 		tg3_full_unlock(tp);
 
@@ -8239,6 +8298,7 @@ static struct ethtool_ops tg3_ethtool_ops = {
 	.self_test_count	= tg3_get_test_count,
 	.self_test		= tg3_self_test,
 	.get_strings		= tg3_get_strings,
+	.phys_id		= tg3_phys_id,
 	.get_stats_count	= tg3_get_stats_count,
 	.get_ethtool_stats	= tg3_get_ethtool_stats,
 	.get_coalesce		= tg3_get_coalesce,
@@ -8303,7 +8363,8 @@ static void __devinit tg3_get_nvram_info(struct tg3 *tp)
 		tw32(NVRAM_CFG1, nvcfg1);
 	}
 
-	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750) {
+	if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750) ||
+	    (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780)) {
 		switch (nvcfg1 & NVRAM_CFG1_VENDOR_MASK) {
 			case FLASH_VENDOR_ATMEL_FLASH_BUFFERED:
 				tp->nvram_jedecnum = JEDEC_ATMEL;
@@ -8717,8 +8778,9 @@ static int tg3_nvram_write_block_buffered(struct tg3 *tp, u32 offset, u32 len,
 		if (i == (len - 4))
 			nvram_cmd |= NVRAM_CMD_LAST;
 
-		if ((tp->nvram_jedecnum == JEDEC_ST) &&
-			(nvram_cmd & NVRAM_CMD_FIRST)) {
+		if ((GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5752) &&
+		    (tp->nvram_jedecnum == JEDEC_ST) &&
+		    (nvram_cmd & NVRAM_CMD_FIRST)) {
 
 			if ((ret = tg3_nvram_exec_cmd(tp,
 				NVRAM_CMD_WREN | NVRAM_CMD_GO |