net/mlx5: Move needed PTYS functions to core layer

Downstream patches require devlink params to access the PTYS register,
move the needed functions from mlx5e to the core layer.

Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20230314054234.267365-11-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 151 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index a1548e6bfb35..0daeb4b72cca 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -1054,3 +1054,154 @@ out:
 	kfree(out);
 	return err;
 }
+
+/* speed in units of 1Mb */
+static const u32 mlx5e_link_speed[MLX5E_LINK_MODES_NUMBER] = {
+	[MLX5E_1000BASE_CX_SGMII] = 1000,
+	[MLX5E_1000BASE_KX]       = 1000,
+	[MLX5E_10GBASE_CX4]       = 10000,
+	[MLX5E_10GBASE_KX4]       = 10000,
+	[MLX5E_10GBASE_KR]        = 10000,
+	[MLX5E_20GBASE_KR2]       = 20000,
+	[MLX5E_40GBASE_CR4]       = 40000,
+	[MLX5E_40GBASE_KR4]       = 40000,
+	[MLX5E_56GBASE_R4]        = 56000,
+	[MLX5E_10GBASE_CR]        = 10000,
+	[MLX5E_10GBASE_SR]        = 10000,
+	[MLX5E_10GBASE_ER]        = 10000,
+	[MLX5E_40GBASE_SR4]       = 40000,
+	[MLX5E_40GBASE_LR4]       = 40000,
+	[MLX5E_50GBASE_SR2]       = 50000,
+	[MLX5E_100GBASE_CR4]      = 100000,
+	[MLX5E_100GBASE_SR4]      = 100000,
+	[MLX5E_100GBASE_KR4]      = 100000,
+	[MLX5E_100GBASE_LR4]      = 100000,
+	[MLX5E_100BASE_TX]        = 100,
+	[MLX5E_1000BASE_T]        = 1000,
+	[MLX5E_10GBASE_T]         = 10000,
+	[MLX5E_25GBASE_CR]        = 25000,
+	[MLX5E_25GBASE_KR]        = 25000,
+	[MLX5E_25GBASE_SR]        = 25000,
+	[MLX5E_50GBASE_CR2]       = 50000,
+	[MLX5E_50GBASE_KR2]       = 50000,
+};
+
+static const u32 mlx5e_ext_link_speed[MLX5E_EXT_LINK_MODES_NUMBER] = {
+	[MLX5E_SGMII_100M] = 100,
+	[MLX5E_1000BASE_X_SGMII] = 1000,
+	[MLX5E_5GBASE_R] = 5000,
+	[MLX5E_10GBASE_XFI_XAUI_1] = 10000,
+	[MLX5E_40GBASE_XLAUI_4_XLPPI_4] = 40000,
+	[MLX5E_25GAUI_1_25GBASE_CR_KR] = 25000,
+	[MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2] = 50000,
+	[MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR] = 50000,
+	[MLX5E_CAUI_4_100GBASE_CR4_KR4] = 100000,
+	[MLX5E_100GAUI_2_100GBASE_CR2_KR2] = 100000,
+	[MLX5E_200GAUI_4_200GBASE_CR4_KR4] = 200000,
+	[MLX5E_400GAUI_8] = 400000,
+	[MLX5E_100GAUI_1_100GBASE_CR_KR] = 100000,
+	[MLX5E_200GAUI_2_200GBASE_CR2_KR2] = 200000,
+	[MLX5E_400GAUI_4_400GBASE_CR4_KR4] = 400000,
+};
+
+int mlx5_port_query_eth_proto(struct mlx5_core_dev *dev, u8 port, bool ext,
+			      struct mlx5_port_eth_proto *eproto)
+{
+	u32 out[MLX5_ST_SZ_DW(ptys_reg)];
+	int err;
+
+	if (!eproto)
+		return -EINVAL;
+
+	err = mlx5_query_port_ptys(dev, out, sizeof(out), MLX5_PTYS_EN, port);
+	if (err)
+		return err;
+
+	eproto->cap   = MLX5_GET_ETH_PROTO(ptys_reg, out, ext,
+					   eth_proto_capability);
+	eproto->admin = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_admin);
+	eproto->oper  = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper);
+	return 0;
+}
+
+bool mlx5_ptys_ext_supported(struct mlx5_core_dev *mdev)
+{
+	struct mlx5_port_eth_proto eproto;
+	int err;
+
+	if (MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet))
+		return true;
+
+	err = mlx5_port_query_eth_proto(mdev, 1, true, &eproto);
+	if (err)
+		return false;
+
+	return !!eproto.cap;
+}
+
+static void mlx5e_port_get_speed_arr(struct mlx5_core_dev *mdev,
+				     const u32 **arr, u32 *size,
+				     bool force_legacy)
+{
+	bool ext = force_legacy ? false : mlx5_ptys_ext_supported(mdev);
+
+	*size = ext ? ARRAY_SIZE(mlx5e_ext_link_speed) :
+		      ARRAY_SIZE(mlx5e_link_speed);
+	*arr  = ext ? mlx5e_ext_link_speed : mlx5e_link_speed;
+}
+
+u32 mlx5_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper,
+			 bool force_legacy)
+{
+	unsigned long temp = eth_proto_oper;
+	const u32 *table;
+	u32 speed = 0;
+	u32 max_size;
+	int i;
+
+	mlx5e_port_get_speed_arr(mdev, &table, &max_size, force_legacy);
+	i = find_first_bit(&temp, max_size);
+	if (i < max_size)
+		speed = table[i];
+	return speed;
+}
+
+u32 mlx5_port_speed2linkmodes(struct mlx5_core_dev *mdev, u32 speed,
+			      bool force_legacy)
+{
+	u32 link_modes = 0;
+	const u32 *table;
+	u32 max_size;
+	int i;
+
+	mlx5e_port_get_speed_arr(mdev, &table, &max_size, force_legacy);
+	for (i = 0; i < max_size; ++i) {
+		if (table[i] == speed)
+			link_modes |= MLX5E_PROT_MASK(i);
+	}
+	return link_modes;
+}
+
+int mlx5_port_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed)
+{
+	struct mlx5_port_eth_proto eproto;
+	u32 max_speed = 0;
+	const u32 *table;
+	u32 max_size;
+	bool ext;
+	int err;
+	int i;
+
+	ext = mlx5_ptys_ext_supported(mdev);
+	err = mlx5_port_query_eth_proto(mdev, 1, ext, &eproto);
+	if (err)
+		return err;
+
+	mlx5e_port_get_speed_arr(mdev, &table, &max_size, false);
+	for (i = 0; i < max_size; ++i)
+		if (eproto.cap & MLX5E_PROT_MASK(i))
+			max_speed = max(max_speed, table[i]);
+
+	*speed = max_speed;
+	return 0;
+}