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Date: Wed, 13 Nov 2019 16:12:05 +0100 From: Jose Abreu <Jose.Abreu@...opsys.com> To: netdev@...r.kernel.org Cc: Joao Pinto <Joao.Pinto@...opsys.com>, Jose Abreu <Jose.Abreu@...opsys.com>, Giuseppe Cavallaro <peppe.cavallaro@...com>, Alexandre Torgue <alexandre.torgue@...com>, Jose Abreu <Jose.Abreu@...opsys.com>, "David S. Miller" <davem@...emloft.net>, Maxime Coquelin <mcoquelin.stm32@...il.com>, linux-stm32@...md-mailman.stormreply.com, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH net-next 4/7] net: stmmac: gmac4+: 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@...opsys.com> --- Cc: Giuseppe Cavallaro <peppe.cavallaro@...com> Cc: Alexandre Torgue <alexandre.torgue@...com> Cc: Jose Abreu <joabreu@...opsys.com> Cc: "David S. Miller" <davem@...emloft.net> Cc: Maxime Coquelin <mcoquelin.stm32@...il.com> Cc: netdev@...r.kernel.org Cc: linux-stm32@...md-mailman.stormreply.com Cc: linux-arm-kernel@...ts.infradead.org Cc: linux-kernel@...r.kernel.org --- drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c index 36a0af8bf89f..c15409030710 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c @@ -252,19 +252,9 @@ static void dwmac4_dma_rx_chan_op_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; } -- 2.7.4
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