diff options
| author | Matan Barak <matanb@mellanox.com> | 2015-06-11 16:35:27 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-06-12 21:49:10 +0300 |
| commit | 4b664c4355b251a142d9d57d0ca0298b497f8428 (patch) | |
| tree | a6cc0221c89db620f60582a1208a5e4a432ca88f /drivers/infiniband/hw/mlx4/cq.c | |
| parent | 52033cfb5aab2a54e238e93c9e52f61c2c5708aa (diff) | |
| download | linux-4b664c4355b251a142d9d57d0ca0298b497f8428.tar.xz | |
IB/mlx4: Add support for CQ time-stamping
This includes:
* support allocation of CQ with the TIMESTAMP_COMPLETION creation flag.
* add timestamp_mask and hca_core_clock to query_device, reporting the
number of supported timestamp bits (mask) and the hca_core_clock frequency.
* return hca core clock's offset in query_device vendor's data,
this is needed in order to read the HCA's core clock.
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/cq.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/cq.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index 8e44aaa5225b..36eb3d012b6d 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -166,6 +166,7 @@ err_buf: return err; } +#define CQ_CREATE_FLAGS_SUPPORTED IB_CQ_FLAGS_TIMESTAMP_COMPLETION struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, const struct ib_cq_init_attr *attr, struct ib_ucontext *context, @@ -178,10 +179,10 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, struct mlx4_uar *uar; int err; - if (attr->flags) + if (entries < 1 || entries > dev->dev->caps.max_cqes) return ERR_PTR(-EINVAL); - if (entries < 1 || entries > dev->dev->caps.max_cqes) + if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED) return ERR_PTR(-EINVAL); cq = kmalloc(sizeof *cq, GFP_KERNEL); @@ -194,6 +195,7 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, spin_lock_init(&cq->lock); cq->resize_buf = NULL; cq->resize_umem = NULL; + cq->create_flags = attr->flags; INIT_LIST_HEAD(&cq->send_qp_list); INIT_LIST_HEAD(&cq->recv_qp_list); @@ -237,7 +239,8 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, vector = dev->eq_table[vector % ibdev->num_comp_vectors]; err = mlx4_cq_alloc(dev->dev, entries, &cq->buf.mtt, uar, - cq->db.dma, &cq->mcq, vector, 0, 0); + cq->db.dma, &cq->mcq, vector, 0, + !!(cq->create_flags & IB_CQ_FLAGS_TIMESTAMP_COMPLETION)); if (err) goto err_dbmap; |