net: dsa: qca8k: move qca8xxx hol fixup to separate function

Move qca8xxx hol fixup to separate function to tidy things up and to
permit using a more efficent loop in future patch.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20230730074113.21889-4-ansuelsmth@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/dsa/qca/qca8k-8xxx.c b/drivers/net/dsa/qca/qca8k-8xxx.c
index acee5fe..f2cf8f7 100644 (file)
--- a/drivers/net/dsa/qca/qca8k-8xxx.c
+++ b/drivers/net/dsa/qca/qca8k-8xxx.c
@@ -1756,6 +1756,46 @@ static int qca8k_connect_tag_protocol(struct dsa_switch *ds,
        return 0;
 }
 
+static void qca8k_setup_hol_fixup(struct qca8k_priv *priv, int port)
+{
+       u32 mask;
+
+       switch (port) {
+       /* The 2 CPU port and port 5 requires some different
+        * priority than any other ports.
+        */
+       case 0:
+       case 5:
+       case 6:
+               mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x4) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x4) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI4(0x6) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI5(0x8) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PORT(0x1e);
+               break;
+       default:
+               mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x6) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x8) |
+                       QCA8K_PORT_HOL_CTRL0_EG_PORT(0x19);
+       }
+       regmap_write(priv->regmap, QCA8K_REG_PORT_HOL_CTRL0(port), mask);
+
+       mask = QCA8K_PORT_HOL_CTRL1_ING(0x6) |
+              QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
+              QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
+              QCA8K_PORT_HOL_CTRL1_WRED_EN;
+       regmap_update_bits(priv->regmap, QCA8K_REG_PORT_HOL_CTRL1(port),
+                          QCA8K_PORT_HOL_CTRL1_ING_BUF_MASK |
+                          QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
+                          QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
+                          QCA8K_PORT_HOL_CTRL1_WRED_EN,
+                          mask);
+}
+
 static int
 qca8k_setup(struct dsa_switch *ds)
 {
@@ -1895,42 +1935,8 @@ qca8k_setup(struct dsa_switch *ds)
                 * missing settings to improve switch stability under load condition.
                 * This problem is limited to qca8337 and other qca8k switch are not affected.
                 */
-               if (priv->switch_id == QCA8K_ID_QCA8337) {
-                       switch (i) {
-                       /* The 2 CPU port and port 5 requires some different
-                        * priority than any other ports.
-                        */
-                       case 0:
-                       case 5:
-                       case 6:
-                               mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x4) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x4) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI4(0x6) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI5(0x8) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PORT(0x1e);
-                               break;
-                       default:
-                               mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x6) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x8) |
-                                       QCA8K_PORT_HOL_CTRL0_EG_PORT(0x19);
-                       }
-                       qca8k_write(priv, QCA8K_REG_PORT_HOL_CTRL0(i), mask);
-
-                       mask = QCA8K_PORT_HOL_CTRL1_ING(0x6) |
-                       QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
-                       QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
-                       QCA8K_PORT_HOL_CTRL1_WRED_EN;
-                       qca8k_rmw(priv, QCA8K_REG_PORT_HOL_CTRL1(i),
-                                 QCA8K_PORT_HOL_CTRL1_ING_BUF_MASK |
-                                 QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
-                                 QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
-                                 QCA8K_PORT_HOL_CTRL1_WRED_EN,
-                                 mask);
-               }
+               if (priv->switch_id == QCA8K_ID_QCA8337)
+                       qca8k_setup_hol_fixup(priv, i);
        }
 
        /* Special GLOBAL_FC_THRESH value are needed for ar8327 switch */