Commit 128c6e2e authored by Linas Vepstas's avatar Linas Vepstas Committed by Jeff Garzik

spidernet: turn off descriptor chain end interrupt.

At some point, the transmit descriptor chain end interrupt (TXDCEINT)
was turned on. This is a mistake; and it damages small packet
transmit performance, as it results in a huge storm of interrupts.
Turn it off.
Signed-off-by: default avatarLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent c3d1182a
...@@ -222,6 +222,7 @@ extern char spider_net_driver_name[]; ...@@ -222,6 +222,7 @@ extern char spider_net_driver_name[];
#define SPIDER_NET_GDTBSTA 0x00000300 #define SPIDER_NET_GDTBSTA 0x00000300
#define SPIDER_NET_GDTDCEIDIS 0x00000002 #define SPIDER_NET_GDTDCEIDIS 0x00000002
#define SPIDER_NET_DMA_TX_VALUE SPIDER_NET_TX_DMA_EN | \ #define SPIDER_NET_DMA_TX_VALUE SPIDER_NET_TX_DMA_EN | \
SPIDER_NET_GDTDCEIDIS | \
SPIDER_NET_GDTBSTA SPIDER_NET_GDTBSTA
#define SPIDER_NET_DMA_TX_FEND_VALUE 0x00030003 #define SPIDER_NET_DMA_TX_FEND_VALUE 0x00030003
...@@ -332,8 +333,7 @@ enum spider_net_int2_status { ...@@ -332,8 +333,7 @@ enum spider_net_int2_status {
SPIDER_NET_GRISPDNGINT SPIDER_NET_GRISPDNGINT
}; };
#define SPIDER_NET_TXINT ( (1 << SPIDER_NET_GDTFDCINT) | \ #define SPIDER_NET_TXINT (1 << SPIDER_NET_GDTFDCINT)
(1 << SPIDER_NET_GDTDCEINT) )
/* We rely on flagged descriptor interrupts */ /* We rely on flagged descriptor interrupts */
#define SPIDER_NET_RXINT ( (1 << SPIDER_NET_GDAFDCINT) ) #define SPIDER_NET_RXINT ( (1 << SPIDER_NET_GDAFDCINT) )
......
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