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>

1 files changed, 6 insertions, 8 deletions

diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
index 34c909deaff3..e0213bad61c7 100644
--- a/drivers/net/mlx4/mlx4.h
+++ b/drivers/net/mlx4/mlx4.h
@@ -63,12 +63,6 @@ enum {
 };
 
 enum {
-        MLX4_EQ_ASYNC,
-        MLX4_EQ_COMP,
-        MLX4_NUM_EQ
-};
-
-enum {
         MLX4_NUM_PDS            = 1 << 15
 };
 
@@ -205,10 +199,11 @@ struct mlx4_cq_table {
 
 struct mlx4_eq_table {
         struct mlx4_bitmap      bitmap;
+        char                   *irq_names;
         void __iomem           *clr_int;
-        void __iomem           *uar_map[(MLX4_NUM_EQ + 6) / 4];
+        void __iomem          **uar_map;
         u32                     clr_mask;
-        struct mlx4_eq          eq[MLX4_NUM_EQ];
+        struct mlx4_eq         *eq;
         u64                     icm_virt;
         struct page            *icm_page;
         dma_addr_t              icm_dma;
@@ -328,6 +323,9 @@ void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap);
 
 int mlx4_reset(struct mlx4_dev *dev);
 
+int mlx4_alloc_eq_table(struct mlx4_dev *dev);
+void mlx4_free_eq_table(struct mlx4_dev *dev);
+
 int mlx4_init_pd_table(struct mlx4_dev *dev);
 int mlx4_init_uar_table(struct mlx4_dev *dev);
 int mlx4_init_mr_table(struct mlx4_dev *dev);