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| author |   Wei Hu (Xavier) <xavier.huwei@huawei.com> | 2019-02-03 20:43:15 +0800 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2019-02-04 16:13:50 -0700 |
| commit | d3743fa94ccd177917783726faf54632439ddb54 (patch) | |
| tree | d2b2c0079e461053de508dd0e896d73dc772cfc7 /drivers/infiniband/hw/hns/hns_roce_hw_v2.h | |
| parent | RDMA/hns: Fix the chip hanging caused by sending mailbox&CMQ during reset (diff) | |
| download | linux-dev-d3743fa94ccd177917783726faf54632439ddb54.tar.xz linux-dev-d3743fa94ccd177917783726faf54632439ddb54.zip | |
RDMA/hns: Fix the chip hanging caused by sending doorbell during reset
On hi08 chip, There is a possibility of chip hanging when sending doorbell
during reset. We can fix it by prohibiting doorbell during reset.
Fixes: 2d40788825ac ("RDMA/hns: Add support for processing send wr and receive wr")
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h index f22094e2ebab..6b0486fcbc59 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h @@ -1799,4 +1799,15 @@ struct hns_roce_sccc_clr_done { __le32 rsv[5]; }; +static inline void hns_roce_write64(struct hns_roce_dev *hr_dev, __le32 val[2], + void __iomem *dest) +{ + struct hns_roce_v2_priv *priv = (struct hns_roce_v2_priv *)hr_dev->priv; + struct hnae3_handle *handle = priv->handle; + const struct hnae3_ae_ops *ops = handle->ae_algo->ops; + + if (!hr_dev->dis_db && !ops->get_hw_reset_stat(handle)) + hns_roce_write64_k(val, dest); +} + #endif |