From: Brice Goglin Date: Tue, 9 Jan 2007 20:04:25 +0000 (+0100) Subject: myri10ge: make wc_fifo usage load-time tunable X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6ebc087a10c3953d59a61f362bd532f2d9468d1b;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git 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 Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index 07cf574197e5..b06e0eba52f6 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;