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dpaa2-eth: add API for Tx shaping

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Add the necessary API (dpni_set_tx_shaping) for configuring the rate and
burst size of a per port shaper in DPAA2.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ioana Ciornei 2020-07-21 19:38:24 +03:00 committed by David S. Miller
parent e3ec13be57
commit 39344a8962
3 changed files with 65 additions and 0 deletions
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13
drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h
View File

@ -626,4 +626,17 @@ struct dpni_cmd_set_congestion_notification {
__le32 threshold_exit;
};
#define DPNI_COUPLED_SHIFT 0
#define DPNI_COUPLED_SIZE 1
struct dpni_cmd_set_tx_shaping {
__le16 tx_cr_max_burst_size;
__le16 tx_er_max_burst_size;
__le32 pad;
__le32 tx_cr_rate_limit;
__le32 tx_er_rate_limit;
/* from LSB: coupled:1 */
u8 coupled;
};
#endif /* _FSL_DPNI_CMD_H */

36
drivers/net/ethernet/freescale/dpaa2/dpni.c
View File

@ -1963,3 +1963,39 @@ int dpni_clear_qos_table(struct fsl_mc_io *mc_io,
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
/**
* 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_cr_shaper: TX committed rate shaping configuration
* @tx_er_shaper: TX excess rate shaping configuration
* @coupled: Committed and excess rate shapers are coupled
*
* 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_cr_shaper,
const struct dpni_tx_shaping_cfg *tx_er_shaper,
int coupled)
{
struct dpni_cmd_set_tx_shaping *cmd_params;
struct fsl_mc_command cmd = { 0 };
/* 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->tx_cr_max_burst_size = cpu_to_le16(tx_cr_shaper->max_burst_size);
cmd_params->tx_er_max_burst_size = cpu_to_le16(tx_er_shaper->max_burst_size);
cmd_params->tx_cr_rate_limit = cpu_to_le32(tx_cr_shaper->rate_limit);
cmd_params->tx_er_rate_limit = cpu_to_le32(tx_er_shaper->rate_limit);
dpni_set_field(cmd_params->coupled, COUPLED, coupled);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}

16
drivers/net/ethernet/freescale/dpaa2/dpni.h
View File

@ -1062,5 +1062,21 @@ int dpni_get_api_version(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 *major_ver,
u16 *minor_ver);
/**
* 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_cr_shaper,
const struct dpni_tx_shaping_cfg *tx_er_shaper,
int coupled);
#endif /* __FSL_DPNI_H */