From 404a4c1fcdf271a922090b804a3587b384347c1f Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 15 Mar 2012 16:57:27 +0000 Subject: ar8216: fix a MTU related regression Switch reset on AR8316 appears to clobber the MTU configuration register and possibly other global config registers. Move global configuration register init writes back to the reset callback. SVN-Revision: 30951 --- .../linux/generic/files/drivers/net/phy/ar8216.c | 48 +++++++++++++--------- 1 file changed, 29 insertions(+), 19 deletions(-) (limited to 'target/linux') diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c index 4b67cb6cbb..660a11bce2 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.c +++ b/target/linux/generic/files/drivers/net/phy/ar8216.c @@ -648,11 +648,6 @@ ar8216_hw_apply(struct switch_dev *dev) static int ar8216_hw_init(struct ar8216_priv *priv) { - /* XXX: undocumented magic from atheros, required! */ - priv->write(priv, 0x38, 0xc000050e); - - ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, - AR8216_GCTRL_MTU, 1518 + 8 + 2); return 0; } @@ -675,10 +670,6 @@ ar8236_hw_init(struct ar8216_priv *priv) } msleep(1000); - /* enable jumbo frames */ - ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, - AR8316_GCTRL_MTU, 9018 + 8 + 2); - priv->initialized = true; return 0; } @@ -716,9 +707,6 @@ ar8316_hw_init(struct ar8216_priv *priv) priv->write(priv, 0x8, newval); - /* standard atheros magic */ - priv->write(priv, 0x38, 0xc000050e); - /* Initialize the ports */ bus = priv->phy->bus; for (i = 0; i < 5; i++) { @@ -741,18 +729,38 @@ ar8316_hw_init(struct ar8216_priv *priv) msleep(1000); } - /* enable jumbo frames */ - ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, - AR8316_GCTRL_MTU, 9018 + 8 + 2); - - /* enable cpu port to receive multicast and broadcast frames */ - priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f); - out: priv->initialized = true; return 0; } +static void +ar8216_init_globals(struct ar8216_priv *priv) +{ + switch (priv->chip) { + case AR8216: + /* standard atheros magic */ + priv->write(priv, 0x38, 0xc000050e); + + ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, + AR8216_GCTRL_MTU, 1518 + 8 + 2); + break; + case AR8316: + /* standard atheros magic */ + priv->write(priv, 0x38, 0xc000050e); + + /* enable cpu port to receive multicast and broadcast frames */ + priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f); + + /* fall through */ + case AR8236: + /* enable jumbo frames */ + ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, + AR8316_GCTRL_MTU, 9018 + 8 + 2); + break; + } +} + static void ar8216_init_port(struct ar8216_priv *priv, int port) { @@ -796,7 +804,9 @@ ar8216_reset_switch(struct switch_dev *dev) for (i = 0; i < AR8216_NUM_PORTS; i++) ar8216_init_port(priv, i); + ar8216_init_globals(priv); mutex_unlock(&priv->reg_mutex); + return ar8216_hw_apply(dev); } -- cgit v1.2.3