Simon,
Simon Kagstrom wrote:
> U-boot might use non-8-byte-aligned addresses for sending data, which
> the kwgbe_send doesn't accept (bootp does this for me). This patch
> copies the data to be sent to a temporary buffer if it is non-aligned.
>
> Signed-off-by: Simon Kagstrom <simon.kagst...@netinsight.net>
> ---
> drivers/net/kirkwood_egiga.c | 26 ++++++++++++++++++++------
> 1 files changed, 20 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/net/kirkwood_egiga.c b/drivers/net/kirkwood_egiga.c
> index 537343f..24269c1 100644
> --- a/drivers/net/kirkwood_egiga.c
> +++ b/drivers/net/kirkwood_egiga.c
> @@ -481,7 +481,7 @@ static int kwgbe_halt(struct eth_device *dev)
> return 0;
> }
>
> -static int kwgbe_send(struct eth_device *dev, volatile void *dataptr,
> +static int kwgbe_send_aligned(struct eth_device *dev, volatile void *dataptr,
> int datasize)
> {
> struct kwgbe_device *dkwgbe = to_dkwgbe(dev);
> @@ -489,11 +489,6 @@ static int kwgbe_send(struct eth_device *dev, volatile
> void *dataptr,
> struct kwgbe_txdesc *p_txdesc = dkwgbe->p_txdesc;
> u32 cmd_sts;
>
> - if ((u32) dataptr & 0x07) {
> - printf("Err..(%s) xmit dataptr not 64bit aligned\n",
> - __FUNCTION__);
> - return -1;
> - }
> p_txdesc->cmd_sts = KWGBE_ZERO_PADDING | KWGBE_GEN_CRC;
> p_txdesc->cmd_sts |= KWGBE_TX_FIRST_DESC | KWGBE_TX_LAST_DESC;
> p_txdesc->cmd_sts |= KWGBE_BUFFER_OWNED_BY_DMA;
> @@ -522,6 +517,25 @@ static int kwgbe_send(struct eth_device *dev, volatile
> void *dataptr,
> return 0;
> }
>
> +static int kwgbe_send(struct eth_device *dev, volatile void *dataptr,
> + int datasize)
> +{
> + static u8 __attribute__((aligned(8))) aligned_buf[9000];
>
Why do you need to send a jumbo frame? U-boot is hard-coded in some
ways to only handle frames with an MTU of 1518 bytes on Rx.
regards,
Ben
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