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authorStephen Hemminger <shemminger@linux-foundation.org>2007-04-11 14:48:01 -0700
committerJeff Garzik <jeff@garzik.org>2007-04-19 15:01:17 -0400
commitb628ed986d681c708aec64418c2c7f6a6b715855 (patch)
tree6ade1dbf518f3b1605046b8f3ee36bf988c393a6 /drivers/net/sky2.h
parent4f44d8ba09280a7f0887ab60277940d6c72f2b43 (diff)
sky2: EC-U performance and jumbo support
The Yukon EC Ultra chips have transmit settings for store and forward and PCI buffering. By setting these appropriately, normal performance goes from 750Mbytes/sec to 940Mbytes/sec (non-jumbo). It is also possible to do Jumbo mode, but it means turning off TSO and checksum offload so the performance gets worse. There isn't enough buffering for checksum offload to work. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/sky2.h')
-rw-r--r--drivers/net/sky2.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 9ca4a2c061c6..5efb5afc45ba 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -741,6 +741,11 @@ enum {
TX_GMF_RP = 0x0d70,/* 32 bit Tx GMAC FIFO Read Pointer */
TX_GMF_RSTP = 0x0d74,/* 32 bit Tx GMAC FIFO Restart Pointer */
TX_GMF_RLEV = 0x0d78,/* 32 bit Tx GMAC FIFO Read Level */
+
+ /* Threshold values for Yukon-EC Ultra and Extreme */
+ ECU_AE_THR = 0x0070, /* Almost Empty Threshold */
+ ECU_TXFF_LEV = 0x01a0, /* Tx BMU FIFO Level */
+ ECU_JUMBO_WM = 0x0080, /* Jumbo Mode Watermark */
};
/* Descriptor Poll Timer Registers */
@@ -1634,6 +1639,9 @@ enum {
TX_VLAN_TAG_ON = 1<<25,/* enable VLAN tagging */
TX_VLAN_TAG_OFF = 1<<24,/* disable VLAN tagging */
+ TX_JUMBO_ENA = 1<<23,/* PCI Jumbo Mode enable (Yukon-EC Ultra) */
+ TX_JUMBO_DIS = 1<<22,/* PCI Jumbo Mode enable (Yukon-EC Ultra) */
+
GMF_WSP_TST_ON = 1<<18,/* Write Shadow Pointer Test On */
GMF_WSP_TST_OFF = 1<<17,/* Write Shadow Pointer Test Off */
GMF_WSP_STEP = 1<<16,/* Write Shadow Pointer Step/Increment */