Expose a capability which introduces the max dynamic blue flame
registers that can be allocated. This new capability can be read by the
mlx5dv_query_device() API.
Since blue flame registers are a device specific feature, this is
exposed through DV.
Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
providers/mlx5/man/mlx5dv_query_device.3 | 4 +++-
providers/mlx5/mlx5.c | 5 +++++
providers/mlx5/mlx5dv.h | 4 +++-
3 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/providers/mlx5/man/mlx5dv_query_device.3 b/providers/mlx5/man/mlx5dv_query_device.3
index f4b8104..0cffc2b 100644
--- a/providers/mlx5/man/mlx5dv_query_device.3
+++ b/providers/mlx5/man/mlx5dv_query_device.3
@@ -48,6 +48,7 @@ uint64_t comp_mask; /* Use enum mlx5dv_context_comp_mask */
struct mlx5dv_cqe_comp_caps cqe_comp_caps;
struct mlx5dv_sw_parsing_caps sw_parsing_caps;
uint32_t tunnel_offloads_caps;
+uint32_t max_dynamic_bfregs /* max blue-flame registers that can be dynamiclly allocated */
.in -8
};
@@ -73,7 +74,8 @@ MLX5DV_CONTEXT_MASK_CQE_COMPRESION = 1 << 0,
MLX5DV_CONTEXT_MASK_SWP = 1 << 1,
MLX5DV_CONTEXT_MASK_STRIDING_RQ = 1 << 2,
MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS = 1 << 3,
-MLX5DV_CONTEXT_MASK_RESERVED = 1 << 4,
+MLX5DV_CONTEXT_MASK_DYN_BFREGS = 1 << 4,
+MLX5DV_CONTEXT_MASK_RESERVED = 1 << 5,
.in -8
};
diff --git a/providers/mlx5/mlx5.c b/providers/mlx5/mlx5.c
index 10a59fe..52eb4f9 100644
--- a/providers/mlx5/mlx5.c
+++ b/providers/mlx5/mlx5.c
@@ -651,6 +651,11 @@ int mlx5dv_query_device(struct ibv_context *ctx_in,
comp_mask_out |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
}
+ if (attrs_out->comp_mask & MLX5DV_CONTEXT_MASK_DYN_BFREGS) {
+ attrs_out->max_dynamic_bfregs = mctx->num_dyn_bfregs;
+ comp_mask_out |= MLX5DV_CONTEXT_MASK_DYN_BFREGS;
+ }
+
attrs_out->comp_mask = comp_mask_out;
return 0;
diff --git a/providers/mlx5/mlx5dv.h b/providers/mlx5/mlx5dv.h
index 0e78c41..84c5099 100644
--- a/providers/mlx5/mlx5dv.h
+++ b/providers/mlx5/mlx5dv.h
@@ -62,7 +62,8 @@ enum mlx5dv_context_comp_mask {
MLX5DV_CONTEXT_MASK_SWP = 1 << 1,
MLX5DV_CONTEXT_MASK_STRIDING_RQ = 1 << 2,
MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS = 1 << 3,
- MLX5DV_CONTEXT_MASK_RESERVED = 1 << 4,
+ MLX5DV_CONTEXT_MASK_DYN_BFREGS = 1 << 4,
+ MLX5DV_CONTEXT_MASK_RESERVED = 1 << 5,
};
struct mlx5dv_cqe_comp_caps {
@@ -100,6 +101,7 @@ struct mlx5dv_context {
struct mlx5dv_sw_parsing_caps sw_parsing_caps;
struct mlx5dv_striding_rq_caps striding_rq_caps;
uint32_t tunnel_offloads_caps;
+ uint32_t max_dynamic_bfregs;
};
enum mlx5dv_context_flags {
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
