On 27/12/13 20:15, Michael Kenney wrote:
We are using the vme_tsi148 bridge driver along with the vme_user
driver to access the VME boards. The A/D board requires D32 bus cycles
and the VME master window is configured accordingly, however, when
monitoring the bus cycles with a logic analyzer, we noticed that the
CPU is transferring one byte at a time (i.e. four D8 transfers rather
than one D32).
Is this the expected behavior of the tsi148 driver?
Hi Mike,
This is certainly not the expected behaviour - if the window is
configured for D32 then it should do 32 bit transfers where possible.
I've heard of this happening recently, but haven't yet been able to
replicate it. Which VME board are you running Linux on and which flavour
of Linux?
If there is a more appropriate mailing-list for this question, please
let me know.
This is the correct list.
Martyn
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