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[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>
This commit is contained in:
Jeff Kirsher 2006-01-12 16:51:16 -08:00 committed by Jeff Garzik
parent e8da8be146
commit 1e613fd9d6
1 changed files with 25 additions and 6 deletions
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31
drivers/net/e1000/e1000_main.c
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@ -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