[haiku-bugs] Re: [Haiku] #9099: Unable to boot (KDL) with Atheros L1 Gigabit Ethernet (built in ASUS M51SN laptop)
- From: "kvark" <trac@xxxxxxxxxxxx>
- Date: Sat, 03 Nov 2012 16:22:45 -0000
#9099: Unable to boot (KDL) with Atheros L1 Gigabit Ethernet (built in ASUS
M51SN
laptop)
-------------------------------------------+-------------------------------
Reporter: kvark | Owner: 3dEyes
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Drivers/Network/attansic_l1 | Version: R1/Development
Resolution: | Keywords:
Blocked By: | atheros,ethernet,KDL
Has a Patch: 0 | Blocking: 6694
| Platform: x86
-------------------------------------------+-------------------------------
Comment (by kvark):
It turned out that the driver doesn't work when built from code. It just
has a higher chance to load and not crash, but the connection still says
"No Link". There are several things I tried to fix, all didn't help:
1) Occasionally, the callback passed to "''bus_dmamap_load''" is given
EFBIG error code. The error basically means that the requested dma block
was not found. I tried reducing the size of the buffers we allocate (from
256 elements to 128), which cures the EFBIG error but still doesn't fix
the driver.
2) The driver code also assumes the callback is called instantly, which is
a wrong assumption according to FreeBSD doc
(http://www.freebsd.org/doc/en/books/arch-handbook/isa-driver-
busmem.html). I tried deferring the result query, which seems to work (but
still doesn't fix the driver).
3) Occasionally, the bus_dmamap_load reports a warning that it failed to
align the memory. Changing the alignment of SMB and CMB blocks cures the
message but doesn't fix the driver.
4) Finally, there were messages on the internet that people had problems
with Atheros L1 under FBSD version 7 (same thing: No Link). They also
claim it was fixed in 8. Hence, I grabbed and built the latest code from
FBSD repository. This didn't help either.
I'm out of ideas for now.... Just going to try FBSD LiveCD to see what
messages are in the log, and compare them with Haiku ones.
--
Ticket URL: <http://dev.haiku-os.org/ticket/9099#comment:7>
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