The hardware has additional error trap interrupt bits. I have never seen
them trigger, but if they do, it looks like this might be useful.
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
Index: sky2-2.6.17/drivers/net/sky2.c
===================================================================
--- sky2-2.6.17.orig/drivers/net/sky2.c 2006-03-08 14:16:43.000000000 -0800
+++ sky2-2.6.17/drivers/net/sky2.c 2006-03-08 14:16:43.000000000 -0800
@@ -2066,6 +2066,27 @@
}
}
+/* This should never happen it is a fatal situation */
+static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
+ const char *rxtx, u32 mask)
+{
+ struct net_device *dev = hw->dev[port];
+ struct sky2_port *sky2 = netdev_priv(dev);
+ u32 imask;
+
+ printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
+ dev ? dev->name : "<not registered>", rxtx);
+
+ imask = sky2_read32(hw, B0_IMSK);
+ imask &= ~mask;
+ sky2_write32(hw, B0_IMSK, imask);
+
+ if (dev) {
+ spin_lock(&sky2->phy_lock);
+ sky2_link_down(sky2);
+ spin_unlock(&sky2->phy_lock);
+ }
+}
static int sky2_poll(struct net_device *dev0, int *budget)
{
@@ -2074,20 +2095,34 @@
int work_done = 0;
u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
- if (status & Y2_IS_HW_ERR)
- sky2_hw_intr(hw);
+ if (unlikely(status & ~Y2_IS_STAT_BMU)) {
+ if (status & Y2_IS_HW_ERR)
+ sky2_hw_intr(hw);
- if (status & Y2_IS_IRQ_PHY1)
- sky2_phy_intr(hw, 0);
+ if (status & Y2_IS_IRQ_PHY1)
+ sky2_phy_intr(hw, 0);
- if (status & Y2_IS_IRQ_PHY2)
- sky2_phy_intr(hw, 1);
+ if (status & Y2_IS_IRQ_PHY2)
+ sky2_phy_intr(hw, 1);
- if (status & Y2_IS_IRQ_MAC1)
- sky2_mac_intr(hw, 0);
+ if (status & Y2_IS_IRQ_MAC1)
+ sky2_mac_intr(hw, 0);
- if (status & Y2_IS_IRQ_MAC2)
- sky2_mac_intr(hw, 1);
+ if (status & Y2_IS_IRQ_MAC2)
+ sky2_mac_intr(hw, 1);
+
+ if (status & Y2_IS_CHK_RX1)
+ sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
+
+ if (status & Y2_IS_CHK_RX2)
+ sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
+
+ if (status & Y2_IS_CHK_TXA1)
+ sky2_descriptor_error(hw, 0, "transmit",
Y2_IS_CHK_TXA1);
+
+ if (status & Y2_IS_CHK_TXA2)
+ sky2_descriptor_error(hw, 1, "transmit",
Y2_IS_CHK_TXA2);
+ }
if (status & Y2_IS_STAT_BMU) {
work_done = sky2_status_intr(hw, work_limit);
Index: sky2-2.6.17/drivers/net/sky2.h
===================================================================
--- sky2-2.6.17.orig/drivers/net/sky2.h 2006-03-08 14:16:43.000000000 -0800
+++ sky2-2.6.17/drivers/net/sky2.h 2006-03-08 14:16:43.000000000 -0800
@@ -279,8 +279,10 @@
Y2_IS_CHK_TXA1 = 1<<0, /* Descriptor error TXA 1 */
Y2_IS_BASE = Y2_IS_HW_ERR | Y2_IS_STAT_BMU,
- Y2_IS_PORT_1 = Y2_IS_IRQ_PHY1 | Y2_IS_IRQ_MAC1,
- Y2_IS_PORT_2 = Y2_IS_IRQ_PHY2 | Y2_IS_IRQ_MAC2,
+ Y2_IS_PORT_1 = Y2_IS_IRQ_PHY1 | Y2_IS_IRQ_MAC1
+ | Y2_IS_CHK_TXA1 | Y2_IS_CHK_RX1,
+ Y2_IS_PORT_2 = Y2_IS_IRQ_PHY2 | Y2_IS_IRQ_MAC2
+ | Y2_IS_CHK_TXA2 | Y2_IS_CHK_RX2,
};
/* B2_IRQM_HWE_MSK 32 bit IRQ Moderation HW Error Mask */
--
-
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