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| author | Lijun Ou <oulijun@huawei.com> | 2018-09-30 12:00:34 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-10-04 01:21:18 +0300 |
| commit | b28ca7cceff8b2cfadebd34a907742cd396c2c33 (patch) | |
| tree | 48a5873cc4455ba8922b038939704d707710806b /drivers/infiniband/hw/hns/hns_roce_qp.c | |
| parent | 3a63c964eaa168c4ada1076b7c6ffd6a53a9ef86 (diff) | |
| download | linux-b28ca7cceff8b2cfadebd34a907742cd396c2c33.tar.xz | |
RDMA/hns: Limit extend sq sge num
According to hip08 limit, the buffer size of extend sge needs to be an
integer wqe_sge_buf_page size. For example, the value of sge_shift field
of qp context is greater or equal to eight when buffer page size is 4K
size. The value of sge_shift field of qp context assigned by
hr_qp->sge.sge_cnt.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_qp.c')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_qp.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c index 2805ab2ab2c5..5ebf481a39d9 100644 --- a/drivers/infiniband/hw/hns/hns_roce_qp.c +++ b/drivers/infiniband/hw/hns/hns_roce_qp.c @@ -344,6 +344,7 @@ static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev, { u32 roundup_sq_stride = roundup_pow_of_two(hr_dev->caps.max_sq_desc_sz); u8 max_sq_stride = ilog2(roundup_sq_stride); + u32 ex_sge_num; u32 page_size; u32 max_cnt; @@ -384,6 +385,7 @@ static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev, } hr_qp->sge.sge_shift = 4; + ex_sge_num = hr_qp->sge.sge_cnt; /* Get buf size, SQ and RQ are aligned to page_szie */ if (hr_dev->caps.max_sq_sg <= 2) { @@ -397,6 +399,8 @@ static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev, hr_qp->sq.wqe_shift), PAGE_SIZE); } else { page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT); + hr_qp->sge.sge_cnt = + max(page_size / (1 << hr_qp->sge.sge_shift), ex_sge_num); hr_qp->buff_size = HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt << hr_qp->rq.wqe_shift), page_size) + HNS_ROCE_ALOGN_UP((hr_qp->sge.sge_cnt << @@ -405,7 +409,7 @@ static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev, hr_qp->sq.wqe_shift), page_size); hr_qp->sq.offset = 0; - if (hr_qp->sge.sge_cnt) { + if (ex_sge_num) { hr_qp->sge.offset = HNS_ROCE_ALOGN_UP( (hr_qp->sq.wqe_cnt << hr_qp->sq.wqe_shift), @@ -491,6 +495,8 @@ static int hns_roce_set_kernel_sq_size(struct hns_roce_dev *hr_dev, page_size); if (hr_dev->caps.max_sq_sg > 2 && hr_qp->sge.sge_cnt) { + hr_qp->sge.sge_cnt = max(page_size/(1 << hr_qp->sge.sge_shift), + (u32)hr_qp->sge.sge_cnt); hr_qp->sge.offset = size; size += HNS_ROCE_ALOGN_UP(hr_qp->sge.sge_cnt << hr_qp->sge.sge_shift, page_size); |