Hi,
Last week I was trying to integrate the atm/utopia driver (sourceforce)
into a 2.4.18 kernel build for a 862, but mij attemtps failed. It
appeared that wen on the first location of the SCC4 (now used for
utopia) a buffer address is written, most CPM activities are halted,
including the SCM1 which I used as console port. The console driver did
write in the allocated buffer descriptors, but the tranmission of the
data was never acknowledged, thus hanging the kernel.
Anyone an idea what happened?
Theo.
It may be that you're getting a conflict in SCC usage. Make sure you
have CONFIG_SERIAL_ATM undefined. But if you really need it make sure
CONFIG_SERIAL_ATM_SCC is not used by anything else. You may also want
to disable CONFIG_PTP_SWITCHING if you don't need it. Finally you
probably want CONFIG_PHY_OTHER instead of CONFIG_PHY_SUNI_155 or
CONFIG_PHY_ATM_25. These latter options make assumptions about the
memory mapping of your phy.
Note: a long while ago we had problems with PTP switching causing hangs
but this was fixed by a ucode patch from motorola. If you really need
PTP switching you should get this.
Alex
On Fri, 06 May 2005 20:41:53 +0200
Theo Gjaltema [off-list ref] wrote:
Hi,
Last week I was trying to integrate the atm/utopia driver
(sourceforce) into a 2.4.18 kernel build for a 862, but mij attemtps
failed. It appeared that wen on the first location of the SCC4 (now
used for utopia) a buffer address is written, most CPM activities are
halted, including the SCM1 which I used as console port. The console
driver did write in the allocated buffer descriptors, but the
tranmission of the data was never acknowledged, thus hanging the
kernel.
Anyone an idea what happened?
Theo.
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