From: Jesse Huang <[email protected]>
Change Logs:
- Solve host error problem in low performance embedded
system when continune down and up.
Signed-off-by: Jesse Huang <[email protected]>
---
drivers/net/sundance.c | 28 ++++++++++++++++++++++++----
1 files changed, 24 insertions(+), 4 deletions(-)
b7c2fba3fb7179d18c8b1c4af316c8a14d8ec1b8
diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index 04ad4d8..a253924 100755
--- a/drivers/net/sundance.c
+++ b/drivers/net/sundance.c
@@ -1076,7 +1076,7 @@ reset_tx (struct net_device *dev)
struct sk_buff *skb;
int i;
int irq = in_interrupt();
-
+
/* Reset tx logic, TxListPtr will be cleaned */
iowrite16 (TxDisable, ioaddr + MACCtrl1);
iowrite16 (TxReset | DMAReset | FIFOReset | NetworkReset,
@@ -1647,6 +1647,14 @@ static int netdev_close(struct net_devic
struct sk_buff *skb;
int i;
+ /* Wait and kill tasklet */
+ tasklet_kill(&np->rx_tasklet);
+ tasklet_kill(&np->tx_tasklet);
+ np->cur_tx = 0;
+ np->dirty_tx = 0;
+ np->cur_task = 0;
+ np->last_tx = 0;
+
netif_stop_queue(dev);
if (netif_msg_ifdown(np)) {
@@ -1667,9 +1675,20 @@ static int netdev_close(struct net_devic
/* Stop the chip's Tx and Rx processes. */
iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
- /* Wait and kill tasklet */
- tasklet_kill(&np->rx_tasklet);
- tasklet_kill(&np->tx_tasklet);
+ for (i = 2000; i > 0; i--) {
+ if ((ioread32(ioaddr + DMACtrl) &0xC000) == 0)
+ break;
+ mdelay(1);
+ }
+
+ iowrite16(GlobalReset | DMAReset | FIFOReset | NetworkReset, ioaddr +ASICCtrl + 2);
+
+ for (i = 2000; i > 0; i--)
+ {
+ if ((ioread16(ioaddr + ASICCtrl +2) &ResetBusy) == 0)
+ break;
+ mdelay(1);
+ }
#ifdef __i386__
if (netif_msg_hw(np)) {
@@ -1707,6 +1726,7 @@ #endif /* __i386__ debugging only */
}
}
for (i = 0; i < TX_RING_SIZE; i++) {
+ np->tx_ring[i].next_desc = 0;
skb = np->tx_skbuff[i];
if (skb) {
pci_unmap_single(np->pci_dev,
--
1.3.GIT