[PATCH rdma-next V1 3/8] net/mlx5_core: Introduce offload arithmetic hardware capabilities

From: Leon Romanovsky <leon-2ukJVAZIZ/Y@public.gmane.org>
To: dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	saeedm-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: [PATCH rdma-next V1 3/8] net/mlx5_core: Introduce offload arithmetic hardware capabilities
Date: Tue, 23 Feb 2016 10:25:23 +0200	[thread overview]
Message-ID: <1456215928-9305-4-git-send-email-leon@leon.nu> (raw)
In-Reply-To: <1456215928-9305-1-git-send-email-leon-2ukJVAZIZ/Y@public.gmane.org>

From: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

Define the necessary hardware structures for the offload
arithmetic capabilities and read/cache them on driver load.

Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Saeed Mahameed <saeedm-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/fw.c |  6 ++++++
 include/linux/mlx5/device.h                  |  6 ++++++
 include/linux/mlx5/mlx5_ifc.h                | 31 +++++++++++++++++++++++++++-
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
index fe6dfd8..75c7ae6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
@@ -145,6 +145,12 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
 			return err;
 	}
 
+	if (MLX5_CAP_GEN(dev, vector_calc)) {
+		err = mlx5_core_get_caps(dev, MLX5_CAP_VECTOR_CALC);
+		if (err)
+			return err;
+	}
+
 	return 0;
 }
 
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 987764a..1f2cedf 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -1196,6 +1196,8 @@ enum mlx5_cap_type {
 	MLX5_CAP_FLOW_TABLE,
 	MLX5_CAP_ESWITCH_FLOW_TABLE,
 	MLX5_CAP_ESWITCH,
+	MLX5_CAP_RESERVED,
+	MLX5_CAP_VECTOR_CALC,
 	/* NUM OF CAP Types */
 	MLX5_CAP_NUM
 };
@@ -1258,6 +1260,10 @@ enum mlx5_cap_type {
 #define MLX5_CAP_ODP(mdev, cap)\
 	MLX5_GET(odp_cap, mdev->hca_caps_cur[MLX5_CAP_ODP], cap)
 
+#define MLX5_CAP_VECTOR_CALC(mdev, cap) \
+	MLX5_GET(vector_calc_cap, \
+		 mdev->hca_caps_cur[MLX5_CAP_VECTOR_CALC], cap)
+
 enum {
 	MLX5_CMD_STAT_OK			= 0x0,
 	MLX5_CMD_STAT_INT_ERR			= 0x1,
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 455d9cc..d34ad50 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -617,6 +617,33 @@ struct mlx5_ifc_odp_cap_bits {
 	u8         reserved_at_80[0x720];
 };
 
+struct mlx5_ifc_calc_op {
+	u8        reserved_at_0[0x10];
+	u8        reserved_at_10[0x9];
+	u8        op_swap_endianness[0x1];
+	u8        op_min[0x1];
+	u8        op_xor[0x1];
+	u8        op_or[0x1];
+	u8        op_and[0x1];
+	u8        op_max[0x1];
+	u8        op_add[0x1];
+};
+
+struct mlx5_ifc_vector_calc_cap_bits {
+	u8         calc_matrix[0x1];
+	u8         reserved_at_1[0x1f];
+	u8         reserved_at_20[0x8];
+	u8         max_vec_count[0x8];
+	u8         reserved_at_30[0xd];
+	u8         max_chunk_size[0x3];
+	struct mlx5_ifc_calc_op calc0;
+	struct mlx5_ifc_calc_op calc1;
+	struct mlx5_ifc_calc_op calc2;
+	struct mlx5_ifc_calc_op calc3;
+
+	u8         reserved_at_e0[0x720];
+};
+
 enum {
 	MLX5_WQ_TYPE_LINKED_LIST  = 0x0,
 	MLX5_WQ_TYPE_CYCLIC       = 0x1,
@@ -781,7 +808,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         cd[0x1];
 	u8         reserved_at_22c[0x1];
 	u8         apm[0x1];
-	u8         reserved_at_22e[0x7];
+	u8         vector_calc[0x1];
+	u8         reserved_at_22f[0x6];
 	u8         qkv[0x1];
 	u8         pkv[0x1];
 	u8         reserved_at_237[0x4];
@@ -1918,6 +1946,7 @@ union mlx5_ifc_hca_cap_union_bits {
 	struct mlx5_ifc_flow_table_nic_cap_bits flow_table_nic_cap;
 	struct mlx5_ifc_flow_table_eswitch_cap_bits flow_table_eswitch_cap;
 	struct mlx5_ifc_e_switch_cap_bits e_switch_cap;
+	struct mlx5_ifc_vector_calc_cap_bits vector_calc_cap;
 	u8         reserved_at_0[0x8000];
 };
 
-- 
2.1.4

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