[PATCH net-next 02/10] tg3: Avoid tx lockups on 5755+ devices
From: Matt Carlson <hidden>
Date: 2010-06-06 03:24:57
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
In certain edge conditions, internal tx resources can get corrupted. This patch enables a bit that will fix the problem. Signed-off-by: Matt Carlson <redacted> Signed-off-by: Michael Chan <mchan@broadcom.com> --- drivers/net/tg3.c | 3 +++ drivers/net/tg3.h | 1 + 2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index bd33117..057e8eb 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c@@ -8214,6 +8214,9 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) } tp->tx_mode = TX_MODE_ENABLE; + if ((tp->tg3_flags3 & TG3_FLG3_5755_PLUS) || + GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) + tp->tx_mode |= TX_MODE_MBUF_LOCKUP_FIX; tw32_f(MAC_TX_MODE, tp->tx_mode); udelay(100);
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 84ea0dc..c245e80 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h@@ -469,6 +469,7 @@ #define TX_MODE_FLOW_CTRL_ENABLE 0x00000010 #define TX_MODE_BIG_BCKOFF_ENABLE 0x00000020 #define TX_MODE_LONG_PAUSE_ENABLE 0x00000040 +#define TX_MODE_MBUF_LOCKUP_FIX 0x00000100 #define MAC_TX_STATUS 0x00000460 #define TX_STATUS_XOFFED 0x00000001 #define TX_STATUS_SENT_XOFF 0x00000002
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1.6.4.4