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| author | Wei Hu (Xavier) <xavier.huwei@huawei.com> | 2016-09-20 16:06:59 (GMT) |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-10-03 15:43:15 (GMT) |
| commit | 97f0e39fa51406e7d73b37e635c04c85829ce9ab (patch) | |
| tree | 6af9853dce04dcb69c70299a92d0ac23c5fe137d /drivers/infiniband/hw/hns/hns_roce_device.h | |
| parent | 76445703e54326f9039d6302b78ad6e8dab17777 (diff) | |
| download | linux-97f0e39fa51406e7d73b37e635c04c85829ce9ab.tar.xz | |
IB/hns: Fix bug of clear hem
In hip06, there's no interface to release hem memory. So, hardware can't
identify whether hem memory released or not.
If all context in a hem memory released, the related hem memory will be
released by driver and reused by others. But, hardware don't know that
this memory can't be used already.
In order to fix this bug, hns roce driver reserved 128K memory for each
type of hem(QPC/CQC/MTPT). While unmap hem memory, hns roce driver will
write base address of reserved memory according to hem type.
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Dongdong Huang(Donald) <hdd.huang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_device.h')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_device.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index 15bc229..3058599 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -506,6 +506,8 @@ struct hns_roce_hw { void (*write_cqc)(struct hns_roce_dev *hr_dev, struct hns_roce_cq *hr_cq, void *mb_buf, u64 *mtts, dma_addr_t dma_handle, int nent, u32 vector); + int (*clear_hem)(struct hns_roce_dev *hr_dev, + struct hns_roce_hem_table *table, int obj); int (*query_qp)(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr); int (*modify_qp)(struct ib_qp *ibqp, const struct ib_qp_attr *attr, |