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myri10ge: make wc_fifo usage load-time tunable 

Under some circumstances, using WC without the WC fifo is faster.
So we make it possible to tune wc_fifo with a module parameter.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Brice Goglin 2007-01-09 21:04:25 +01:00 committed by Jeff Garzik
parent 553af56775
commit 6ebc087a10
1 changed files with 5 additions and 1 deletions
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6
drivers/net/myri10ge/myri10ge.c
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@ -274,6 +274,10 @@ static int myri10ge_fill_thresh = 256;
module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed\n");
static int myri10ge_wcfifo = 1;
module_param(myri10ge_wcfifo, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_wcfifo, "Enable WC Fifo when WC is enabled\n");
#define MYRI10GE_FW_OFFSET 1024*1024
#define MYRI10GE_HIGHPART_TO_U32(X) \
(sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0)
@ -1714,7 +1718,7 @@ static int myri10ge_open(struct net_device *dev)
goto abort_with_irq;
}
if (mgp->mtrr >= 0) {
if (myri10ge_wcfifo && mgp->mtrr >= 0) {
mgp->tx.wc_fifo = (u8 __iomem *) mgp->sram + MXGEFW_ETH_SEND_4;
mgp->rx_small.wc_fifo =
(u8 __iomem *) mgp->sram + MXGEFW_ETH_RECV_SMALL;