svn commit: r199670 - head/sys/dev/bge

Mon Nov 23 01:05:27 UTC 2009

On Sun, Nov 22, 2009 at 08:50:27PM +0000, Pyun YongHyeon wrote:
> Log:
>   Fix two long standing bugs on bge(4). Most pre BCM5755 controllers
>   have a DMA bug when buffer address crosses a multiple of the 4GB
>   boundary(e.g. 4GB, 8GB, 12GB etc).

Does this only affect transfers that *cross* a 4GB boundary or does it
also affect transfers that *end* at a 4GB boundary? E.g. if the mbuf
cluster starts at 0xffffff00 with size 0x100 -- will the DMA engine
stall happen or not?

Joerg