[PATCH] forcedeth: watermark fixup

This patch defines the watermark registers and fixes up the use of this
register.

Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com>

Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 19 insertions, 4 deletions

diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 1a315d09d95e..11b8f1b43dd5 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -271,8 +271,10 @@ enum {
 #define NVREG_LINKSPEED_MASK    (0xFFF)
         NvRegUnknownSetupReg5 = 0x130,
 #define NVREG_UNKSETUP5_BIT31   (1<<31)
-        NvRegUnknownSetupReg3 = 0x13c,
-#define NVREG_UNKSETUP3_VAL1    0x200010
+        NvRegTxWatermark = 0x13c,
+#define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
+#define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
+#define NVREG_TX_WM_DESC2_3_1000        0xfe08000
         NvRegTxRxControl = 0x144,
 #define NVREG_TXRXCTL_KICK      0x0001
 #define NVREG_TXRXCTL_BIT1      0x0002
@@ -660,7 +662,7 @@ static const struct register_test nv_registers_test[] = {
         { NvRegMisc1, 0x03c },
         { NvRegOffloadConfig, 0x03ff },
         { NvRegMulticastAddrA, 0xffffffff },
-        { NvRegUnknownSetupReg3, 0x0ff },
+        { NvRegTxWatermark, 0x0ff },
         { NvRegWakeUpFlags, 0x07777 },
         { 0,0 }
 };
@@ -2257,6 +2259,16 @@ set_speed:
         }
         writel(txreg, base + NvRegTxDeferral);
 
+        if (np->desc_ver == DESC_VER_1) {
+                txreg = NVREG_TX_WM_DESC1_DEFAULT;
+        } else {
+                if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
+                        txreg = NVREG_TX_WM_DESC2_3_1000;
+                else
+                        txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
+        }
+        writel(txreg, base + NvRegTxWatermark);
+
         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
                 base + NvRegMisc1);
         pci_push(base);
@@ -3922,7 +3934,10 @@ static int nv_open(struct net_device *dev)
 
         /* 5) continue setup */
         writel(np->linkspeed, base + NvRegLinkSpeed);
-        writel(NVREG_UNKSETUP3_VAL1, base + NvRegUnknownSetupReg3);
+        if (np->desc_ver == DESC_VER_1)
+                writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
+        else
+                writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
         writel(np->txrxctl_bits, base + NvRegTxRxControl);
         writel(np->vlanctl_bits, base + NvRegVlanControl);
         pci_push(base);