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

From bec2af878c58bbd12f9009948d4fc58ad9c7c1d3 Mon Sep 17 00:00:00 2001
From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
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 <ruxandra.radulescu@nxp.com>
---
 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,