Commit 52f96cd1 authored Nov 14, 2019 by Jose Abreu Committed by David S. Miller Nov 15, 2019

net: stmmac: xgmac: Remove uneeded computation for RFA/RFD



RFA and RFD should not be dependent on FIFO size. In fact, the more FIFO
space we have, the later we can activate Flow Control. Let's use
hard-coded values for RFA and RFD for all FIFO sizes with the exception
of 4k, which is a special case.

Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 854248e5

drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c

+2 −12

Original line number	Diff line number	Diff line
		@@ -183,19 +183,9 @@ static void dwxgmac2_dma_rx_mode(void __iomem *ioaddr, int mode,
		rfa = 0x01; /* Full-1.5K */
		break;

		case 8192:
		rfd = 0x06; /* Full-4K */
		rfa = 0x0a; /* Full-6K */
		break;

		case 16384:
		rfd = 0x06; /* Full-4K */
		rfa = 0x12; /* Full-10K */
		break;

		default:
		rfd = 0x06; /* Full-4K */
		rfa = 0x1e; /* Full-16K */
		rfd = 0x07; /* Full-4.5K */
		rfa = 0x04; /* Full-3K */
		break;
		}

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