Hi Ira,
On 02/28/2011 11:11 PM, Ira W. Snyder wrote:
On Mon, Feb 28, 2011 at 10:15:49PM +0200, Felix Radensky wrote:
Hi Ira,
Thank you very much Felix. The dmesg output shows that the controller
never got an interrupt for the second transaction. The patch below has
extra debugging information that may help determine why this happens.
Please apply it and re-run the test.
The last section of dmesg (after "Freeing unused kernel memory") is all
I need.
Attached relevant dmesg portion.
Ok, try this patch on top of the last one.
It looks like you used the dmatest module in multi-channel mode last
time. One channel makes it easier to debug:
modprobe dmatest max_channels=1 threads_per_chan=2 iterations=1
Thanks for your help in debugging this. Hopefully this is the last
patch to test. :)
Ira
Looks like this was not the last one. The test still fails, see below
__dma_request_channel: success (dma0chan0)
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380000 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380060 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef3800c0 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380120 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380180 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef3801e0 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: assign cookies: start=0
of:fsl-elo-dma ffe0c300.dma: chan0: assign cookies: end=6
of:fsl-elo-dma ffe0c300.dma: chan0: idle, starting controller
dmatest: Started 2 threads using dma0chan0
of:fsl-elo-dma ffe0c300.dma: chan0: irq: stat = 0x8
of:fsl-elo-dma ffe0c300.dma: chan0: irq: End-of-link INT
of:fsl-elo-dma ffe0c300.dma: chan0: irq: Exit
of:fsl-elo-dma ffe0c300.dma: chan0: tasklet entry
of:fsl-elo-dma ffe0c300.dma: chan0: completed_cookie=6
of:fsl-elo-dma ffe0c300.dma: chan0: no pending LDs
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380000 callback
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380000 free
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380060 free
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef3800c0 free
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380120 free
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380180 free
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef3801e0 free
of:fsl-elo-dma ffe0c300.dma: chan0: tasklet exit
dma0chan0-copy0: verifying source buffer...
dma0chan0-copy0: verifying dest buffer...
dma0chan0-copy0: #0: No errors with src_off=0xf92 dst_off=0xf46 len=0x14ad
dma0chan0-copy0: terminating after 1 tests, 0 failures (status 0)
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef3801e0 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380180 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: LD ef380120 allocated
of:fsl-elo-dma ffe0c300.dma: chan0: assign cookies: start=6
of:fsl-elo-dma ffe0c300.dma: chan0: assign cookies: end=9
of:fsl-elo-dma ffe0c300.dma: chan0: idle, starting controller
dma0chan0-copy1: #0: test timed out
dma0chan0-copy1: terminating after 1 tests, 1 failures (status 0)
Felix.
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