Jonathan, what kind of memory is fpga_drv.strmdata? memory from the
kernel stack, something you allocated? You'll notice you were trying to
access location 0.
To use dma streaming memory you must call dma_map_single() to get the
physical address of fpga_drv.strmdata. That memory must be contigu
Hmmm, so if the issue I see is related to what you see then setting mtu
to 4KB may clear it otherwise I have a either a potential race condition
freeing skb's or ultimately the protocol stack is not freeing the
correct buffer...
Thanks Jonathan.
-Original Message-
From: Jonathan Haws [mai
Hi Jonathan, I've read your post with great interest.
I have a custom board with custom fpga's connected to the PPC405EX EBC
bus on banks 2 and 3. Running linux 2.6.29.1. The board collects data
and dma's it to a scatter-gather dma buffer and then uses TCP/writev +
Ethernet 9KB Jumbo packets to
I'm using linux kernel 2.6.29.1 I've been using the mmap system call to
map 4MB of contiguous kernel memory (RAM), obtained by get_free_pages
with order == 10, to user space. One implementation I have uses
remap_pfn_range(), its seems to work ok, I do have other issues I just
want to make sure its
I have developed a board with the AMCC PPC405eX running at 600MHz and
experimented with two transmission methods;
1.Raw socket w/jumbo frames �C approx. 600Mbits/sec
2.TCP using writev w/jumbo frames �C approx. 525Mbits/sec
From: linuxppc-dev-bounces+john.p.price=l-3com@lists.
