tg3: Revise 5719 internal FIFO overflow solution

Commit cf79003d598b1f82a4caa0564107283b4f560e14, entitled
"tg3: Fix 5719 internal FIFO overflow problem", proposed a way to solve
an internal FIFO overflow problem.  We have since discovered a slightly
better way to solve the problem.  This patch changes the code so that
the problem is contained closer to the problem source.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index d62c8d937c82..0a0987aeb32e 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -1333,6 +1333,10 @@
 
 #define TG3_RDMA_RSRVCTRL_REG           0x00004900
 #define TG3_RDMA_RSRVCTRL_FIFO_OFLW_FIX  0x00000004
+#define TG3_RDMA_RSRVCTRL_FIFO_LWM_1_5K  0x00000c00
+#define TG3_RDMA_RSRVCTRL_FIFO_LWM_MASK  0x00000ff0
+#define TG3_RDMA_RSRVCTRL_FIFO_HWM_1_5K  0x000c0000
+#define TG3_RDMA_RSRVCTRL_FIFO_HWM_MASK  0x000ff000
 #define TG3_RDMA_RSRVCTRL_TXMRGN_320B    0x28000000
 #define TG3_RDMA_RSRVCTRL_TXMRGN_MASK    0xffe00000
 /* 0x4904 --> 0x4910 unused */