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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2006-01-12 16:51:16 -0800
committerJeff Garzik <jgarzik@pobox.com>2006-01-17 07:48:03 -0500
commit1e613fd9d64aba9945ddb3b7f1107127ee8a9835 (patch)
treeaa6de84f7790d96daffcb20a6ffc22ee498db724 /drivers/net
parente8da8be146e6043fb4b60a222be0014a0fb46d24 (diff)
downloadblackbird-op-linux-1e613fd9d64aba9945ddb3b7f1107127ee8a9835.tar.gz
blackbird-op-linux-1e613fd9d64aba9945ddb3b7f1107127ee8a9835.zip
[PATCH] e1000: Added interrupt auto mask support
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/e1000/e1000_main.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 6d7f9c9df085..53f87fe511c5 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1736,10 +1736,15 @@ e1000_configure_rx(struct e1000_adapter *adapter)
}
if (hw->mac_type >= e1000_82571) {
- /* Reset delay timers after every interrupt */
ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
+ /* Reset delay timers after every interrupt */
ctrl_ext |= E1000_CTRL_EXT_CANC;
+#ifdef CONFIG_E1000_NAPI
+ /* Auto-Mask interrupts upon ICR read. */
+ ctrl_ext |= E1000_CTRL_EXT_IAME;
+#endif
E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
+ E1000_WRITE_REG(hw, IAM, ~0);
E1000_WRITE_FLUSH(hw);
}
@@ -3244,12 +3249,24 @@ e1000_intr(int irq, void *data, struct pt_regs *regs)
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
uint32_t icr = E1000_READ_REG(hw, ICR);
-#if defined(CONFIG_E1000_NAPI) && defined(CONFIG_E1000_MQ) || !defined(CONFIG_E1000_NAPI)
+#ifndef CONFIG_E1000_NAPI
int i;
+#else
+ /* Interrupt Auto-Mask...upon reading ICR,
+ * interrupts are masked. No need for the
+ * IMC write, but it does mean we should
+ * account for it ASAP. */
+ if (likely(hw->mac_type >= e1000_82571))
+ atomic_inc(&adapter->irq_sem);
#endif
- if(unlikely(!icr))
+ if (unlikely(!icr)) {
+#ifdef CONFIG_E1000_NAPI
+ if (hw->mac_type >= e1000_82571)
+ e1000_irq_enable(adapter);
+#endif
return IRQ_NONE; /* Not our interrupt */
+ }
if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
hw->get_link_status = 1;
@@ -3257,9 +3274,11 @@ e1000_intr(int irq, void *data, struct pt_regs *regs)
}
#ifdef CONFIG_E1000_NAPI
- atomic_inc(&adapter->irq_sem);
- E1000_WRITE_REG(hw, IMC, ~0);
- E1000_WRITE_FLUSH(hw);
+ if (unlikely(hw->mac_type < e1000_82571)) {
+ atomic_inc(&adapter->irq_sem);
+ E1000_WRITE_REG(hw, IMC, ~0);
+ E1000_WRITE_FLUSH(hw);
+ }
#ifdef CONFIG_E1000_MQ
if (atomic_read(&adapter->rx_sched_call_data.count) == 0) {
/* We must setup the cpumask once count == 0 since
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