[Commit-gnuradio] r7178 - usrp2/trunk/firmware/lib

[eb]

Author: eb
Date: 2007-12-14 11:39:04 -0700 (Fri, 14 Dec 2007)
New Revision: 7178

Modified:
   usrp2/trunk/firmware/lib/eth_mac.c
Log:
revised low and high water marks in eth mac

Modified: usrp2/trunk/firmware/lib/eth_mac.c
===================================================================
--- usrp2/trunk/firmware/lib/eth_mac.c  2007-12-14 17:37:39 UTC (rev 7177)
+++ usrp2/trunk/firmware/lib/eth_mac.c  2007-12-14 18:39:04 UTC (rev 7178)
@@ -66,10 +66,12 @@
   eth_mac->tx_pause_en = 1;    // pay attn to pause frames sent to us
 
   // set rx flow control high and low water marks
-  unsigned int lwmark = (2*2048 + 64)/4; // 2 * 2048-byte frames + 1 * 64-byte 
pause frame
-  eth_mac->fc_lwmark = lwmark;
-  eth_mac->fc_hwmark = lwmark + 2048/4;  // plus a 2048-byte frame
+  // unsigned int lwmark = (2*2048 + 64)/4; // 2 * 2048-byte frames + 1 * 
64-byte pause frame
+  // eth_mac->fc_hwmark = lwmark + 2048/4;  // plus a 2048-byte frame
 
+  eth_mac->fc_lwmark = 400;            // there is currently 1024 lines in the 
fifo
+  eth_mac->fc_hwmark = 800;
+
   eth_mac->pause_quanta_set = 38;       // a bit more than 1 max frame 
16kb/512 + fudge
   eth_mac->pause_frame_send_en = 1;     // enable sending pause frames
 }