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authorStephen Hemminger <shemminger@osdl.org>2006-04-25 10:58:51 -0700
committerJeff Garzik <jeff@garzik.org>2006-04-26 06:19:45 -0400
commitd27ed38765d6e01eaab443a7909f53a37f090e99 (patch)
treed4abd4a0364d0ba971dbde615cde8165d10bb905
parent734cbc363b159caee158d5a83408c72d98bcacf0 (diff)
[PATCH] sky2: add fake idle irq timer
Add an fake NAPI schedule once a second. This is an attempt to work around for broken configurations with edge-triggered interrupts. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/sky2.c22
-rw-r--r--drivers/net/sky2.h2
2 files changed, 23 insertions, 1 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 618fde8622ca..6673ddf763a4 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -2086,6 +2086,20 @@ static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
}
}
+/* If idle then force a fake soft NAPI poll once a second
+ * to work around cases where sharing an edge triggered interrupt.
+ */
+static void sky2_idle(unsigned long arg)
+{
+ struct net_device *dev = (struct net_device *) arg;
+
+ local_irq_disable();
+ if (__netif_rx_schedule_prep(dev))
+ __netif_rx_schedule(dev);
+ local_irq_enable();
+}
+
+
static int sky2_poll(struct net_device *dev0, int *budget)
{
struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
@@ -2134,6 +2148,8 @@ static int sky2_poll(struct net_device *dev0, int *budget)
sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
}
+ mod_timer(&hw->idle_timer, jiffies + HZ);
+
local_irq_disable();
__netif_rx_complete(dev0);
@@ -3288,6 +3304,8 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
+ setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) dev);
+
pci_set_drvdata(pdev, hw);
return 0;
@@ -3323,13 +3341,15 @@ static void __devexit sky2_remove(struct pci_dev *pdev)
if (!hw)
return;
+ del_timer_sync(&hw->idle_timer);
+
+ sky2_write32(hw, B0_IMSK, 0);
dev0 = hw->dev[0];
dev1 = hw->dev[1];
if (dev1)
unregister_netdev(dev1);
unregister_netdev(dev0);
- sky2_write32(hw, B0_IMSK, 0);
sky2_set_power_state(hw, PCI_D3hot);
sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
sky2_write8(hw, B0_CTST, CS_RST_SET);
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 89dd18cd12f0..b026f5653f04 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -1880,6 +1880,8 @@ struct sky2_hw {
struct sky2_status_le *st_le;
u32 st_idx;
dma_addr_t st_dma;
+
+ struct timer_list idle_timer;
int msi_detected;
wait_queue_head_t msi_wait;
};

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