Hi Ramon,
On 22.08.19 13:15, Ramon Fried wrote:
On August 22, 2019 12:38:08 PM GMT+03:00, Stefan Roese <stefan.ro...@gmail.com>
wrote:
Hi Ramon,
On 14.07.19 17:25, Ramon Fried wrote:
Macb Ethernet controller requires a RX buffer of 128 bytes. It is
highly sub-optimal for Gigabit-capable GEM that is able to use
a bigger DMA buffer. Change this constant and associated macros
with data stored in the private structure.
RX DMA buffer size has to be multiple of 64 bytes as indicated in
DMA Configuration Register specification.
Signed-off-by: Ramon Fried <rfried....@gmail.com>
This patch breaks ethernet on my AT91SAM9G25 based board. With this
patch now, tftp does not complete the xfer any more:
=> tftp 21000000 big
ethernet@f802c000: PHY present at 1
ethernet@f802c000: Starting autonegotiation...
ethernet@f802c000: Autonegotiation complete
ethernet@f802c000: link up, 100Mbps full-duplex (lpa: 0xc5e1)
Using ethernet@f802c000 device
TFTP from server 192.168.1.5; our IP address is 192.168.1.249
Filename 'big'.
Load address: 0x21000000
Loading: #T T
With this patch reverted (as well as with v2019.07), tftp works
just fine.
I did not look into the patch yet. Perhaps you have a quick idea
on why this breaks my platform.
BTW: When I disable the dcache (dcache off), tftp also works fine
with this patch. So its definitely something cache / dma related.
Thanks for letting me know, I'll be next to a PC tomorrow, I'll look
into it.
I did look into this patch a bit and did not find any functional
change for the non-GEM part I'm using. Hopefully I'll find some more
time tomorrow to dig into this. If you spot something meanwhile,
then even better. ;)
Thanks,
Stefan
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