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[PATCH] sundance: remove TxStartThresh and RxEarlyThresh

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For patent issue need to remove TxStartThresh and RxEarlyThresh.  This patent
is cut-through patent.  If use this function, Tx will start to transmit after
few data be move in to Tx FIFO.  We are not allow to use those function in
DFE530/DFE550/DFE580/DL10050/IP100/IP100A.  It will decrease a little
performance.

Signed-off-by: Jesse Huang <jesse@icplus.com.tw>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jesse Huang 2006-10-20 14:42:05 -07:00 committed by Jeff Garzik
parent ac7468e923
commit e242040df1
1 changed files with 2 additions and 6 deletions
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8
drivers/net/sundance.c
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@ -264,8 +264,6 @@ enum alta_offsets {
ASICCtrl = 0x30,
EEData = 0x34,
EECtrl = 0x36,
TxStartThresh = 0x3c,
RxEarlyThresh = 0x3e,
FlashAddr = 0x40,
FlashData = 0x44,
TxStatus = 0x46,
@ -1111,6 +1109,7 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
int tx_cnt;
int tx_status;
int handled = 0;
int i;
do {
@ -1153,17 +1152,14 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
np->stats.tx_fifo_errors++;
if (tx_status & 0x02)
np->stats.tx_window_errors++;
/*
** This reset has been verified on
** DFE-580TX boards ! phdm@macqel.be.
*/
if (tx_status & 0x10) { /* TxUnderrun */
unsigned short txthreshold;
txthreshold = ioread16 (ioaddr + TxStartThresh);
/* Restart Tx FIFO and transmitter */
sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16);
iowrite16 (txthreshold, ioaddr + TxStartThresh);
/* No need to reset the Tx pointer here */
}
/* Restart the Tx. */