From: Xiaofei Tan <tanxiaofei@xxxxxxxxxx>
AEQ overflow will be reported by hardware when too many
asynchronous events occured but not be handled in time.
Normally, AEQ overflow error is not easy to occur. Once
happened, we have to do physical function reset to recover.
PF reset is implemented in two steps. Firstly, set reset
level with ae_dev->ops->set_default_reset_request.
Secondly, run reset with ae_dev->ops->reset_event.
Signed-off-by: Xiaofei Tan <tanxiaofei@xxxxxxxxxx>
Signed-off-by: Yixian Liu <liuyixian@xxxxxxxxxx>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 3beb152..d02fe04 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4565,11 +4565,22 @@ static irqreturn_t hns_roce_v2_msix_interrupt_abn(int irq, void *dev_id)
int_en = roce_read(hr_dev, ROCEE_VF_ABN_INT_EN_REG);
if (roce_get_bit(int_st, HNS_ROCE_V2_VF_INT_ST_AEQ_OVERFLOW_S)) {
+ struct pci_dev *pdev = hr_dev->pci_dev;
+ struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
+ const struct hnae3_ae_ops *ops = ae_dev->ops;
+
dev_err(dev, "AEQ overflow!\n");
roce_set_bit(int_st, HNS_ROCE_V2_VF_INT_ST_AEQ_OVERFLOW_S, 1);
roce_write(hr_dev, ROCEE_VF_ABN_INT_ST_REG, int_st);
+ /* Set reset level for the following reset_event() call */
+ if (ops->set_default_reset_request)
+ ops->set_default_reset_request(ae_dev,
+ HNAE3_FUNC_RESET);
+ if (ops->reset_event)
+ ops->reset_event(pdev, NULL);
+
roce_set_bit(int_en, HNS_ROCE_V2_VF_ABN_INT_EN_S, 1);
roce_write(hr_dev, ROCEE_VF_ABN_INT_EN_REG, int_en);
--
2.7.4
