net/mlx4_core: Introduce ACCESS_REG CMD and eth_prot_ctrl dev cap

Adding ACCESS REG mlx4 command and use it to implement Query method for
PTYS (Port Type and Speed Register).
Query and store eth_prot_ctrl dev cap.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 41 insertions, 1 deletions

diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 379c02648ab3..ff5f5deb3dcf 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -67,6 +67,8 @@ enum {
         MLX4_CMD_MAP_ICM_AUX     = 0xffc,
         MLX4_CMD_UNMAP_ICM_AUX   = 0xffb,
         MLX4_CMD_SET_ICM_SIZE    = 0xffd,
+        MLX4_CMD_ACCESS_REG      = 0x3b,
+
         /*master notify fw on finish for slave's flr*/
         MLX4_CMD_INFORM_FLR_DONE = 0x5b,
         MLX4_CMD_GET_OP_REQ      = 0x59,
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 73910daec317..181cd9fc90f2 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -186,7 +186,8 @@ enum {
         MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS       = 1LL <<  10,
         MLX4_DEV_CAP_FLAG2_MAD_DEMUX            = 1LL <<  11,
         MLX4_DEV_CAP_FLAG2_CQE_STRIDE           = 1LL <<  12,
-        MLX4_DEV_CAP_FLAG2_EQE_STRIDE           = 1LL <<  13
+        MLX4_DEV_CAP_FLAG2_EQE_STRIDE           = 1LL <<  13,
+        MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL        = 1LL <<  14
 };
 
 enum {
@@ -1319,4 +1320,41 @@ static inline bool mlx4_low_memory_profile(void)
         return is_kdump_kernel();
 }
 
+/* ACCESS REG commands */
+enum mlx4_access_reg_method {
+        MLX4_ACCESS_REG_QUERY = 0x1,
+        MLX4_ACCESS_REG_WRITE = 0x2,
+};
+
+/* ACCESS PTYS Reg command */
+enum mlx4_ptys_proto {
+        MLX4_PTYS_IB = 1<<0,
+        MLX4_PTYS_EN = 1<<2,
+};
+
+struct mlx4_ptys_reg {
+        u8 resrvd1;
+        u8 local_port;
+        u8 resrvd2;
+        u8 proto_mask;
+        __be32 resrvd3[2];
+        __be32 eth_proto_cap;
+        __be16 ib_width_cap;
+        __be16 ib_speed_cap;
+        __be32 resrvd4;
+        __be32 eth_proto_admin;
+        __be16 ib_width_admin;
+        __be16 ib_speed_admin;
+        __be32 resrvd5;
+        __be32 eth_proto_oper;
+        __be16 ib_width_oper;
+        __be16 ib_speed_oper;
+        __be32 resrvd6;
+        __be32 eth_proto_lp_adv;
+} __packed;
+
+int mlx4_ACCESS_PTYS_REG(struct mlx4_dev *dev,
+                         enum mlx4_access_reg_method method,
+                         struct mlx4_ptys_reg *ptys_reg);
+
 #endif /* MLX4_DEVICE_H */