diff options
| author |   Dongdong Deng <dongdong.deng@windriver.com> | 2010-11-16 19:50:15 -0800 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2010-11-16 19:50:15 -0800 |
| commit | 147b2c8cb4f3e16aafc87096365a913d01ee3a21 (patch) | |
| tree | 3c65dedd8faf0f02ff01ca0fcc680acc5b273829 /drivers/net/e1000e/netdev.c | |
| parent | e1000e: 82574 intermittently fails to initialize with manageability f/w (diff) | |
| download | linux-dev-147b2c8cb4f3e16aafc87096365a913d01ee3a21.tar.xz linux-dev-147b2c8cb4f3e16aafc87096365a913d01ee3a21.zip | |
e1000e: add netpoll support for MSI/MSI-X IRQ modes
With enabling CONFIG_PCI_MSI, e1000e could work in MSI/MSI-X IRQ mode,
and netpoll controller didn't deal with those IRQ modes on e1000e.
This patch add the handling MSI/MSI-X IRQ modes to netpoll controller,
so that netconsole could work with those IRQ modes.
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/e1000e/netdev.c')
| -rw-r--r-- | drivers/net/e1000e/netdev.c | 49 |
1 files changed, 45 insertions, 4 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index a6d54e460001..9b3f0a996b00 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -5465,6 +5465,36 @@ static void e1000_shutdown(struct pci_dev *pdev) } #ifdef CONFIG_NET_POLL_CONTROLLER + +static irqreturn_t e1000_intr_msix(int irq, void *data) +{ + struct net_device *netdev = data; + struct e1000_adapter *adapter = netdev_priv(netdev); + int vector, msix_irq; + + if (adapter->msix_entries) { + vector = 0; + msix_irq = adapter->msix_entries[vector].vector; + disable_irq(msix_irq); + e1000_intr_msix_rx(msix_irq, netdev); + enable_irq(msix_irq); + + vector++; + msix_irq = adapter->msix_entries[vector].vector; + disable_irq(msix_irq); + e1000_intr_msix_tx(msix_irq, netdev); + enable_irq(msix_irq); + + vector++; + msix_irq = adapter->msix_entries[vector].vector; + disable_irq(msix_irq); + e1000_msix_other(msix_irq, netdev); + enable_irq(msix_irq); + } + + return IRQ_HANDLED; +} + /* * Polling 'interrupt' - used by things like netconsole to send skbs * without having to re-enable interrupts. It's not called while @@ -5474,10 +5504,21 @@ static void e1000_netpoll(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); - disable_irq(adapter->pdev->irq); - e1000_intr(adapter->pdev->irq, netdev); - - enable_irq(adapter->pdev->irq); + switch (adapter->int_mode) { + case E1000E_INT_MODE_MSIX: + e1000_intr_msix(adapter->pdev->irq, netdev); + break; + case E1000E_INT_MODE_MSI: + disable_irq(adapter->pdev->irq); + e1000_intr_msi(adapter->pdev->irq, netdev); + enable_irq(adapter->pdev->irq); + break; + default: /* E1000E_INT_MODE_LEGACY */ + disable_irq(adapter->pdev->irq); + e1000_intr(adapter->pdev->irq, netdev); + enable_irq(adapter->pdev->irq); + break; + } } #endif |