KumiSystems/openwrtv4
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ar8216: fix a MTU related regression

Browse source 
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
This commit is contained in:
Felix Fietkau 2012-03-15 16:57:27 +00:00
parent fab655c2b1
commit 404a4c1fcd
1 changed files with 29 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

44
target/linux/generic/files/drivers/net/phy/ar8216.c
View file

@ -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++) {
@ -741,16 +729,36 @@ ar8316_hw_init(struct ar8216_priv *priv)
msleep(1000);
}
/* enable jumbo frames */
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,
AR8316_GCTRL_MTU, 9018 + 8 + 2);
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);
out:
priv->initialized = true;
return 0;
/* fall through */
case AR8236:
/* enable jumbo frames */
ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
AR8316_GCTRL_MTU, 9018 + 8 + 2);
break;
}
}
static void
@ -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);
}