target/linux/layerscape/patches-5.4/701-net-0203-dpaa2-eth-Add-Tx-shaping-API.patch

   1 From bec2af878c58bbd12f9009948d4fc58ad9c7c1d3 Mon Sep 17 00:00:00 2001
   2 From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
   3 Date: Fri, 5 May 2017 18:45:50 +0300
   4 Subject: [PATCH] dpaa2-eth: Add Tx shaping API
   5
   6 DPNIs can be configured to accept a maximum Tx rate and
   7 burst size. Add the MC API for controlling these parameters.
   8
   9 Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
  10 ---
  11  drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h |  8 +++++++
  12  drivers/net/ethernet/freescale/dpaa2/dpni.c     | 29 +++++++++++++++++++++++++
  13  drivers/net/ethernet/freescale/dpaa2/dpni.h     | 15 +++++++++++++
  14  3 files changed, 52 insertions(+)
  15
  16 --- a/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h
  17 +++ b/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h
  18 @@ -315,6 +315,14 @@ struct dpni_rsp_get_link_state {
  19         __le64 options;
  20  };
  21
  22 +struct dpni_cmd_set_tx_shaping {
  23 +       /* cmd word 0 */
  24 +       __le16 max_burst_size;
  25 +       __le16 pad[3];
  26 +       /* cmd word 1 */
  27 +       __le32 rate_limit;
  28 +};
  29 +
  30  struct dpni_cmd_set_max_frame_length {
  31         __le16 max_frame_length;
  32  };
  33 --- a/drivers/net/ethernet/freescale/dpaa2/dpni.c
  34 +++ b/drivers/net/ethernet/freescale/dpaa2/dpni.c
  35 @@ -926,6 +926,35 @@ int dpni_get_link_state(struct fsl_mc_io
  36  }
  37
  38  /**
  39 + * dpni_set_tx_shaping() - Set the transmit shaping
  40 + * @mc_io:     Pointer to MC portal's I/O object
  41 + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
  42 + * @token:     Token of DPNI object
  43 + * @tx_shaper: Tx shaping configuration
  44 + *
  45 + * Return:     '0' on Success; Error code otherwise.
  46 + */
  47 +int dpni_set_tx_shaping(struct fsl_mc_io *mc_io,
  48 +                       u32 cmd_flags,
  49 +                       u16 token,
  50 +                       const struct dpni_tx_shaping_cfg *tx_shaper)
  51 +{
  52 +       struct fsl_mc_command cmd = { 0 };
  53 +       struct dpni_cmd_set_tx_shaping *cmd_params;
  54 +
  55 +       /* prepare command */
  56 +       cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TX_SHAPING,
  57 +                                         cmd_flags,
  58 +                                         token);
  59 +       cmd_params = (struct dpni_cmd_set_tx_shaping *)cmd.params;
  60 +       cmd_params->max_burst_size = cpu_to_le16(tx_shaper->max_burst_size);
  61 +       cmd_params->rate_limit = cpu_to_le32(tx_shaper->rate_limit);
  62 +
  63 +       /* send command to mc*/
  64 +       return mc_send_command(mc_io, &cmd);
  65 +}
  66 +
  67 +/**
  68   * dpni_set_max_frame_length() - Set the maximum received frame length.
  69   * @mc_io:     Pointer to MC portal's I/O object
  70   * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
  71 --- a/drivers/net/ethernet/freescale/dpaa2/dpni.h
  72 +++ b/drivers/net/ethernet/freescale/dpaa2/dpni.h
  73 @@ -555,6 +555,21 @@ int dpni_get_link_state(struct fsl_mc_io
  74                         u16                     token,
  75                         struct dpni_link_state  *state);
  76
  77 +/**
  78 + * struct dpni_tx_shaping - Structure representing DPNI tx shaping configuration
  79 + * @rate_limit: rate in Mbps
  80 + * @max_burst_size: burst size in bytes (up to 64KB)
  81 + */
  82 +struct dpni_tx_shaping_cfg {
  83 +       u32     rate_limit;
  84 +       u16     max_burst_size;
  85 +};
  86 +
  87 +int dpni_set_tx_shaping(struct fsl_mc_io                       *mc_io,
  88 +                       u32                                     cmd_flags,
  89 +                       u16                                     token,
  90 +                       const struct dpni_tx_shaping_cfg        *tx_shaper);
  91 +
  92  int dpni_set_max_frame_length(struct fsl_mc_io *mc_io,
  93                               u32               cmd_flags,
  94                               u16               token,