diff options
| author | Yevgeny Petrilin <yevgenyp@mellanox.co.il> | 2008-12-22 07:15:03 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-12-22 07:15:03 -0800 |
| commit | b8dd786f9417e5885929bfe33a235c76a9c1c569 (patch) | |
| tree | 16b38c672980d142ffa0ac0ccdeb4af19c20cc31 /drivers/net/mlx4/cq.c | |
| parent | 061e41fdb5047b1fb161e89664057835935ca1d2 (diff) | |
| download | kernel-crypto-b8dd786f9417e5885929bfe33a235c76a9c1c569.tar.gz kernel-crypto-b8dd786f9417e5885929bfe33a235c76a9c1c569.tar.xz kernel-crypto-b8dd786f9417e5885929bfe33a235c76a9c1c569.zip | |
mlx4_core: Add support for multiple completion event vectors
When using MSI-X mode, create a completion event queue for each CPU.
Report the number of completion EQs in a new struct mlx4_caps member,
num_comp_vectors, and extend the mlx4_cq_alloc() interface with a
vector parameter so that consumers can specify which completion EQ
should be used to report events for the CQ being created.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/net/mlx4/cq.c')
| -rw-r--r-- | drivers/net/mlx4/cq.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/net/mlx4/cq.c b/drivers/net/mlx4/cq.c index b7ad2829d67..ac57b6a42c6 100644 --- a/drivers/net/mlx4/cq.c +++ b/drivers/net/mlx4/cq.c @@ -189,7 +189,7 @@ EXPORT_SYMBOL_GPL(mlx4_cq_resize); int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt, struct mlx4_uar *uar, u64 db_rec, struct mlx4_cq *cq, - int collapsed) + unsigned vector, int collapsed) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_cq_table *cq_table = &priv->cq_table; @@ -198,6 +198,11 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt, u64 mtt_addr; int err; + if (vector >= dev->caps.num_comp_vectors) + return -EINVAL; + + cq->vector = vector; + cq->cqn = mlx4_bitmap_alloc(&cq_table->bitmap); if (cq->cqn == -1) return -ENOMEM; @@ -227,7 +232,7 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt, cq_context->flags = cpu_to_be32(!!collapsed << 18); cq_context->logsize_usrpage = cpu_to_be32((ilog2(nent) << 24) | uar->index); - cq_context->comp_eqn = priv->eq_table.eq[MLX4_EQ_COMP].eqn; + cq_context->comp_eqn = priv->eq_table.eq[vector].eqn; cq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; mtt_addr = mlx4_mtt_addr(dev, mtt); @@ -276,7 +281,7 @@ void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq) if (err) mlx4_warn(dev, "HW2SW_CQ failed (%d) for CQN %06x\n", err, cq->cqn); - synchronize_irq(priv->eq_table.eq[MLX4_EQ_COMP].irq); + synchronize_irq(priv->eq_table.eq[cq->vector].irq); spin_lock_irq(&cq_table->lock); radix_tree_delete(&cq_table->tree, cq->cqn); |