net: dsa: qca8k: introduce qca8k_bulk_read/write function

Introduce qca8k_bulk_read/write() function to use mgmt Ethernet way to
read/write packet in bulk. Make use of this new function in the fdb
function and while at it reduce the reg for fdb_read from 4 to 3 as the
max bit for the ARL(fdb) table is 83 bits.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
index a1b76dcd2eb60f049abf87a8875da8697a4aea17..52ec2800dd892c183e919bb5d0e91a71a28d2336 100644 (file)
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -411,6 +411,43 @@ qca8k_regmap_update_bits_eth(struct qca8k_priv *priv, u32 reg, u32 mask, u32 wri
        return qca8k_write_eth(priv, reg, &val, sizeof(val));
 }
 
+static int
+qca8k_bulk_read(struct qca8k_priv *priv, u32 reg, u32 *val, int len)
+{
+       int i, count = len / sizeof(u32), ret;
+
+       if (priv->mgmt_master && !qca8k_read_eth(priv, reg, val, len))
+               return 0;
+
+       for (i = 0; i < count; i++) {
+               ret = regmap_read(priv->regmap, reg + (i * 4), val + i);
+               if (ret < 0)
+                       return ret;
+       }
+
+       return 0;
+}
+
+static int
+qca8k_bulk_write(struct qca8k_priv *priv, u32 reg, u32 *val, int len)
+{
+       int i, count = len / sizeof(u32), ret;
+       u32 tmp;
+
+       if (priv->mgmt_master && !qca8k_write_eth(priv, reg, val, len))
+               return 0;
+
+       for (i = 0; i < count; i++) {
+               tmp = val[i];
+
+               ret = regmap_write(priv->regmap, reg + (i * 4), tmp);
+               if (ret < 0)
+                       return ret;
+       }
+
+       return 0;
+}
+
 static int
 qca8k_regmap_read(void *ctx, uint32_t reg, uint32_t *val)
 {
@@ -546,17 +583,13 @@ qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask)
 static int
 qca8k_fdb_read(struct qca8k_priv *priv, struct qca8k_fdb *fdb)
 {
-       u32 reg[4], val;
-       int i, ret;
+       u32 reg[3];
+       int ret;
 
        /* load the ARL table into an array */
-       for (i = 0; i < 4; i++) {
-               ret = qca8k_read(priv, QCA8K_REG_ATU_DATA0 + (i * 4), &val);
-               if (ret < 0)
-                       return ret;
-
-               reg[i] = val;
-       }
+       ret = qca8k_bulk_read(priv, QCA8K_REG_ATU_DATA0, reg, sizeof(reg));
+       if (ret)
+               return ret;
 
        /* vid - 83:72 */
        fdb->vid = FIELD_GET(QCA8K_ATU_VID_MASK, reg[2]);
@@ -580,7 +613,6 @@ qca8k_fdb_write(struct qca8k_priv *priv, u16 vid, u8 port_mask, const u8 *mac,
                u8 aging)
 {
        u32 reg[3] = { 0 };
-       int i;
 
        /* vid - 83:72 */
        reg[2] = FIELD_PREP(QCA8K_ATU_VID_MASK, vid);
@@ -597,8 +629,7 @@ qca8k_fdb_write(struct qca8k_priv *priv, u16 vid, u8 port_mask, const u8 *mac,
        reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR5_MASK, mac[5]);
 
        /* load the array into the ARL table */
-       for (i = 0; i < 3; i++)
-               qca8k_write(priv, QCA8K_REG_ATU_DATA0 + (i * 4), reg[i]);
+       qca8k_bulk_write(priv, QCA8K_REG_ATU_DATA0, reg, sizeof(reg));
 }
 
 static int