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mlx4_core: Add support for multiple completion event vectors

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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>
This commit is contained in:
Yevgeny Petrilin
2008-12-22 07:15:03 -08:00
committed by Roland Dreier
parent 061e41fdb5
commit b8dd786f94
10 changed files with 157 additions and 63 deletions
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4
include/linux/mlx4/device.h
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@@ -206,6 +206,7 @@ struct mlx4_caps {
int reserved_cqs;
int num_eqs;
int reserved_eqs;
int num_comp_vectors;
int num_mpts;
int num_mtt_segs;
int fmr_reserved_mtts;
@@ -328,6 +329,7 @@ struct mlx4_cq {
int arm_sn;
int cqn;
unsigned vector;
atomic_t refcount;
struct completion free;
@@ -437,7 +439,7 @@ void mlx4_free_hwq_res(struct mlx4_dev *mdev, struct mlx4_hwq_resources *wqres,
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);
void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq);
int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base);