@@ -111,6 +111,36 @@ static const struct irq_domain_ops txgbe_misc_irq_domain_ops = {
};
static irqreturn_t txgbe_misc_irq_handle(int irq, void *data)
+{
+ struct wx_q_vector *q_vector;
+ struct txgbe *txgbe = data;
+ struct wx *wx = txgbe->wx;
+ u32 eicr;
+
+ if (wx->pdev->msix_enabled)
+ return IRQ_WAKE_THREAD;
+
+ eicr = wx_misc_isb(wx, WX_ISB_VEC0);
+ if (!eicr) {
+ /* shared interrupt alert!
+ * the interrupt that we masked before the ICR read.
+ */
+ if (netif_running(wx->netdev))
+ txgbe_irq_enable(wx, true);
+ return IRQ_NONE; /* Not our interrupt */
+ }
+ wx->isb_mem[WX_ISB_VEC0] = 0;
+ if (!(wx->pdev->msi_enabled))
+ wr32(wx, WX_PX_INTA, 1);
+
+ /* would disable interrupts here but it is auto disabled */
+ q_vector = wx->q_vector[0];
+ napi_schedule_irqoff(&q_vector->napi);
+
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t txgbe_misc_irq_thread_fn(int irq, void *data)
{
struct txgbe *txgbe = data;
struct wx *wx = txgbe->wx;
@@ -157,6 +187,7 @@ void txgbe_free_misc_irq(struct txgbe *txgbe)
int txgbe_setup_misc_irq(struct txgbe *txgbe)
{
+ unsigned long flags = IRQF_ONESHOT;
struct wx *wx = txgbe->wx;
int hwirq, err;
@@ -170,14 +201,17 @@ int txgbe_setup_misc_irq(struct txgbe *txgbe)
irq_create_mapping(txgbe->misc.domain, hwirq);
txgbe->misc.chip = txgbe_irq_chip;
- if (wx->pdev->msix_enabled)
+ if (wx->pdev->msix_enabled) {
txgbe->misc.irq = wx->msix_entry->vector;
- else
+ } else {
txgbe->misc.irq = wx->pdev->irq;
+ if (!wx->pdev->msi_enabled)
+ flags |= IRQF_SHARED;
+ }
- err = request_threaded_irq(txgbe->misc.irq, NULL,
- txgbe_misc_irq_handle,
- IRQF_ONESHOT,
+ err = request_threaded_irq(txgbe->misc.irq, txgbe_misc_irq_handle,
+ txgbe_misc_irq_thread_fn,
+ flags,
wx->netdev->name, txgbe);
if (err)
goto del_misc_irq;
Rename original txgbe_misc_irq_handle() to txgbe_misc_irq_thread_fn() since it is the handle thread to wake up. And add the primary handler to deal the case of MSI/INTx, because there is a schedule NAPI poll. Fixes: aefd013624a1 ("net: txgbe: use irq_domain for interrupt controller") Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com> --- .../net/ethernet/wangxun/txgbe/txgbe_irq.c | 44 ++++++++++++++++--- 1 file changed, 39 insertions(+), 5 deletions(-)