diff options
| author | Ayaz Abdulla <aabdulla@nvidia.com> | 2008-08-06 12:12:34 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-08-07 02:11:01 -0400 |
| commit | 9a33e883564c2db8e1b3b645de4579a98ac084d2 (patch) | |
| tree | 32b786f7e8b52a9ff81cc2d876daa0d9b11a6e76 | |
| parent | 06941931d8697dd939d7cac379565b1b2de1415f (diff) | |
| download | op-kernel-dev-9a33e883564c2db8e1b3b645de4579a98ac084d2.zip op-kernel-dev-9a33e883564c2db8e1b3b645de4579a98ac084d2.tar.gz | |
forcedeth: add tx pause limit
This patch adds support for limiting the number of tx pause frames to a
default of 8. Previously, hardware would send out continuous stream of
pause frames.
Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| -rw-r--r-- | drivers/net/forcedeth.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index d9495d2..053971e 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -249,6 +249,8 @@ enum { #define NVREG_TX_PAUSEFRAME_ENABLE_V1 0x01800010 #define NVREG_TX_PAUSEFRAME_ENABLE_V2 0x056003f0 #define NVREG_TX_PAUSEFRAME_ENABLE_V3 0x09f00880 + NvRegTxPauseFrameLimit = 0x174, +#define NVREG_TX_PAUSEFRAMELIMIT_ENABLE 0x00010000 NvRegMIIStatus = 0x180, #define NVREG_MIISTAT_ERROR 0x0001 #define NVREG_MIISTAT_LINKCHANGE 0x0008 @@ -3076,8 +3078,11 @@ static void nv_update_pause(struct net_device *dev, u32 pause_flags) u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1; if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2; - if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) + if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) { pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3; + /* limit the number of tx pause frames to a default of 8 */ + writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit); + } writel(pause_enable, base + NvRegTxPauseFrame); writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1); np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE; |
