diff options
| author | Brice Goglin <brice@myri.com> | 2007-01-09 20:04:25 (GMT) |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-01-18 17:02:41 (GMT) |
| commit | 6ebc087a10c3953d59a61f362bd532f2d9468d1b (patch) | |
| tree | 6b798d7fbefbe4f3100a6f2069dacecea08a670b /drivers/net/myri10ge | |
| parent | 553af56775b3f23bf64f87090ab81a62bef2837b (diff) | |
| download | linux-6ebc087a10c3953d59a61f362bd532f2d9468d1b.tar.xz | |
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>
Diffstat (limited to 'drivers/net/myri10ge')
| -rw-r--r-- | drivers/net/myri10ge/myri10ge.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index 07cf574..b06e0eb 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -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; |