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authorMichael Chan <mchan@broadcom.com>2012-07-29 19:15:41 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-29 23:18:31 -0700
commit8151ad576d34a5ec1f1068edf25f3b7c47f6edab (patch)
treed751e4c95cac884b28374cb94db397581ff33a64
parent8253947e2cdfb14717c9212b751b7aec9ea9ef5e (diff)
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tg3: Request APE_LOCK_PHY before PHY access
to prevent PHY access conflict with APE firmware. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/broadcom/tg3.c37
-rw-r--r--drivers/net/ethernet/broadcom/tg3.h1
2 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 9a009fd6ea1b..a528f9a6a893 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -672,6 +672,12 @@ static int tg3_ape_lock(struct tg3 *tp, int locknum)
else
bit = 1 << tp->pci_fn;
break;
+ case TG3_APE_LOCK_PHY0:
+ case TG3_APE_LOCK_PHY1:
+ case TG3_APE_LOCK_PHY2:
+ case TG3_APE_LOCK_PHY3:
+ bit = APE_LOCK_REQ_DRIVER;
+ break;
default:
return -EINVAL;
}
@@ -723,6 +729,12 @@ static void tg3_ape_unlock(struct tg3 *tp, int locknum)
else
bit = 1 << tp->pci_fn;
break;
+ case TG3_APE_LOCK_PHY0:
+ case TG3_APE_LOCK_PHY1:
+ case TG3_APE_LOCK_PHY2:
+ case TG3_APE_LOCK_PHY3:
+ bit = APE_LOCK_GRANT_DRIVER;
+ break;
default:
return;
}
@@ -1052,6 +1064,8 @@ static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
udelay(80);
}
+ tg3_ape_lock(tp, tp->phy_ape_lock);
+
*val = 0x0;
frame_val = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
@@ -1086,6 +1100,8 @@ static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
udelay(80);
}
+ tg3_ape_unlock(tp, tp->phy_ape_lock);
+
return ret;
}
@@ -1105,6 +1121,8 @@ static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
udelay(80);
}
+ tg3_ape_lock(tp, tp->phy_ape_lock);
+
frame_val = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
MI_COM_PHY_ADDR_MASK);
frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
@@ -1135,6 +1153,8 @@ static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
udelay(80);
}
+ tg3_ape_unlock(tp, tp->phy_ape_lock);
+
return ret;
}
@@ -13648,6 +13668,23 @@ static int __devinit tg3_phy_probe(struct tg3 *tp)
tg3_flag_set(tp, PAUSE_AUTONEG);
tp->link_config.flowctrl = FLOW_CTRL_TX | FLOW_CTRL_RX;
+ if (tg3_flag(tp, ENABLE_APE)) {
+ switch (tp->pci_fn) {
+ case 0:
+ tp->phy_ape_lock = TG3_APE_LOCK_PHY0;
+ break;
+ case 1:
+ tp->phy_ape_lock = TG3_APE_LOCK_PHY1;
+ break;
+ case 2:
+ tp->phy_ape_lock = TG3_APE_LOCK_PHY2;
+ break;
+ case 3:
+ tp->phy_ape_lock = TG3_APE_LOCK_PHY3;
+ break;
+ }
+ }
+
if (tg3_flag(tp, USE_PHYLIB))
return tg3_phy_init(tp);
diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h
index a1b75cd67b9d..6fb45a500032 100644
--- a/drivers/net/ethernet/broadcom/tg3.h
+++ b/drivers/net/ethernet/broadcom/tg3.h
@@ -3107,6 +3107,7 @@ struct tg3 {
int old_link;
u8 phy_addr;
+ u8 phy_ape_lock;
/* PHY info */
u32 phy_id;