Bestcomm tasks and interrupts on MPC5200(B)

[Dave Best <arieswar24b@yahoo.de>]

I'm trying to write a driver which uses the Local Plus Bus on my MPC5200B a=
nd therefore have to use BestComm DMA, which requires me to use a Gen_BD ta=
sk for data transfer with Local Plus.
I tried to follow the fec driver that is currently used and took a peek at =
the mpc52xx-ac97 driver which at least uses the same kind of bus as I.

Initialising the task, resetting and enabling works fine. Even request_irq =
reports no error, but when I start a transfer it hangs and if I am lucky, a=
n interrupt occurs after quite some time. But it's always the BestComm ethe=
rnet rx task which produces an RFIFO interrupt, presumably after the watchd=
og catches on.=20
If this happens my interrupt occurs to.

I tried to debug this situation but I am still clueless.
If I use the MPC5200 Interrupt emulation registers to force an interrupt fo=
r my interface to occur, nothing happens except that it hangs.

Any hints, tips or help appreciated.

Dave=0A=0A=0A