From bec2af878c58bbd12f9009948d4fc58ad9c7c1d3 Mon Sep 17 00:00:00 2001 From: Ioana Radulescu Date: Fri, 5 May 2017 18:45:50 +0300 Subject: [PATCH] dpaa2-eth: Add Tx shaping API DPNIs can be configured to accept a maximum Tx rate and burst size. Add the MC API for controlling these parameters. Signed-off-by: Ioana Radulescu --- drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h | 8 +++++++ drivers/net/ethernet/freescale/dpaa2/dpni.c | 29 +++++++++++++++++++++++++ drivers/net/ethernet/freescale/dpaa2/dpni.h | 15 +++++++++++++ 3 files changed, 52 insertions(+) --- a/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h @@ -315,6 +315,14 @@ struct dpni_rsp_get_link_state { __le64 options; }; +struct dpni_cmd_set_tx_shaping { + /* cmd word 0 */ + __le16 max_burst_size; + __le16 pad[3]; + /* cmd word 1 */ + __le32 rate_limit; +}; + struct dpni_cmd_set_max_frame_length { __le16 max_frame_length; }; --- a/drivers/net/ethernet/freescale/dpaa2/dpni.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpni.c @@ -926,6 +926,35 @@ int dpni_get_link_state(struct fsl_mc_io } /** + * dpni_set_tx_shaping() - Set the transmit shaping + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPNI object + * @tx_shaper: Tx shaping configuration + * + * Return: '0' on Success; Error code otherwise. + */ +int dpni_set_tx_shaping(struct fsl_mc_io *mc_io, + u32 cmd_flags, + u16 token, + const struct dpni_tx_shaping_cfg *tx_shaper) +{ + struct fsl_mc_command cmd = { 0 }; + struct dpni_cmd_set_tx_shaping *cmd_params; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TX_SHAPING, + cmd_flags, + token); + cmd_params = (struct dpni_cmd_set_tx_shaping *)cmd.params; + cmd_params->max_burst_size = cpu_to_le16(tx_shaper->max_burst_size); + cmd_params->rate_limit = cpu_to_le32(tx_shaper->rate_limit); + + /* send command to mc*/ + return mc_send_command(mc_io, &cmd); +} + +/** * dpni_set_max_frame_length() - Set the maximum received frame length. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' --- a/drivers/net/ethernet/freescale/dpaa2/dpni.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpni.h @@ -555,6 +555,21 @@ int dpni_get_link_state(struct fsl_mc_io u16 token, struct dpni_link_state *state); +/** + * struct dpni_tx_shaping - Structure representing DPNI tx shaping configuration + * @rate_limit: rate in Mbps + * @max_burst_size: burst size in bytes (up to 64KB) + */ +struct dpni_tx_shaping_cfg { + u32 rate_limit; + u16 max_burst_size; +}; + +int dpni_set_tx_shaping(struct fsl_mc_io *mc_io, + u32 cmd_flags, + u16 token, + const struct dpni_tx_shaping_cfg *tx_shaper); + int dpni_set_max_frame_length(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,