From: Ayaz Abdulla Date: Wed, 6 Aug 2008 16:12:34 +0000 (-0400) Subject: forcedeth: add tx pause limit X-Git-Tag: v2.6.27-rc3~69^2~13^2~32 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=9a33e883564c2db8e1b3b645de4579a98ac084d2;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index d9495d2fd80..053971e5fc9 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;