Commit 8cc048e3 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Jeff Garzik
Browse files

[PATCH] sky2: handle tx timeout 



Put more logic in to try and handle transmit timeout recovery.

Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent 69634ee7

drivers/net/sky2.c

+14 −3
Original line number Diff line number Diff line
@@ -661,7 +661,7 @@ static void sky2_qset(struct sky2_hw *hw, u16 q) 
/* Setup prefetch unit registers. This is the interface between

 * hardware and driver list elements

 */

static inline void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,

static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,

				      u64 addr, u32 last)

{

	sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
@@ -1558,14 +1558,25 @@ static void sky2_phy_task(void *arg) 
static void sky2_tx_timeout(struct net_device *dev)

{

	struct sky2_port *sky2 = netdev_priv(dev);

	struct sky2_hw *hw = sky2->hw;

	unsigned txq = txqaddr[sky2->port];



	if (netif_msg_timer(sky2))

		printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);



	sky2_write32(sky2->hw, Q_ADDR(txqaddr[sky2->port], Q_CSR), BMU_STOP);

	sky2_read32(sky2->hw, Q_ADDR(txqaddr[sky2->port], Q_CSR));

	netif_stop_queue(dev);



	sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);

	sky2_read32(hw, Q_ADDR(txq, Q_CSR));



	sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);



	sky2_tx_clean(sky2);



	sky2_qset(hw, txq);

	sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);



	netif_wake_queue(dev);

}