Add a workaround for dual port PCI-X card that returns status out of
order sometimes because of split transactions.
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
--- linux-2.6.16.40.orig/drivers/net/sky2.c 2007-02-14 16:45:23.000000000
-0800
+++ linux-2.6.16.40/drivers/net/sky2.c 2007-02-14 16:47:06.000000000 -0800
@@ -1031,7 +1031,25 @@
struct sky2_hw *hw = sky2->hw;
unsigned port = sky2->port;
u32 ramsize, rxspace;
- int err = -ENOMEM;
+ int cap, err = -ENOMEM;
+ struct net_device *otherdev = hw->dev[sky2->port^1];
+
+ /*
+ * On dual port PCI-X card, there is an problem where status
+ * can be received out of order due to split transactions
+ */
+ if (otherdev && netif_running(otherdev) &&
+ (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
+ struct sky2_port *osky2 = netdev_priv(otherdev);
+ u16 cmd;
+
+ cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
+ cmd &= ~PCI_X_CMD_MAX_SPLIT;
+ sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
+
+ sky2->rx_csum = 0;
+ osky2->rx_csum = 0;
+ }
if (netif_msg_ifup(sky2))
printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
--
Stephen Hemminger <[EMAIL PROTECTED]>
-
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