Florian Fainelli wrote: > 2014-05-07 1:14 GMT-07:00 Byungho An <bh74...@samsung.com>: > > > > This patch adds tail point update function for rx path > > after rx_refill function. It indicates tail point for rx dma. > > > > Signed-off-by: Byungho An <bh74...@samsung.com> > > --- > > drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c | 14 +++++++++++++- > > drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h | 4 ++++ > > drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 5 +++++ > > 3 files changed, 22 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c > b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c > > index 49240c9..249b0e0 100644 > > --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c > > +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c > > @@ -112,7 +112,7 @@ static void sxgbe_dma_channel_init(void __iomem > *ioaddr, int cha_num, > > > > dma_addr = dma_rx + ((r_rsize - 1) * SXGBE_DESC_SIZE_BYTES); > > writel(lower_32_bits(dma_addr), > > - ioaddr + SXGBE_DMA_CHA_RXDESC_LADD_REG(cha_num)); > > + ioaddr + SXGBE_DMA_CHA_RXDESC_TAILPTR_REG(cha_num)); > > /* program the ring sizes */ > > writel(t_rsize - 1, ioaddr + > SXGBE_DMA_CHA_TXDESC_RINGLEN_REG(cha_num)); > > writel(r_rsize - 1, ioaddr + > SXGBE_DMA_CHA_RXDESC_RINGLEN_REG(cha_num)); > > @@ -370,6 +370,17 @@ static void sxgbe_enable_tso(void __iomem *ioaddr, > u8 chan_num) > > writel(ctrl, ioaddr + SXGBE_DMA_CHA_TXCTL_REG(chan_num)); > > } > > > > +static void sxgbe_dma_update_rxdesc_tail_ptr(void __iomem *ioaddr, u8 > chan_num, > > + dma_addr_t dma_rx_phy, int > > cur_rx, > > + int rxsize) > > I think that at some point you should revisit your abstraction, all > the patches that I see do take a void __iomem * argument as the first > function argument, you should probably use your driver private context > here. The day you support a different version of the hardware, there > might be other differences that need to be taken care of. > I agree with you, it would be more robust for different version of the hardware and make simple function argument. But most functions of this driver deal with read/write register using ioaddr. As of now I think it is enough but I'll consider it later.
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