On 2010-7-25 20:00, [email protected] wrote:
Re: dma memory allocation failure
Then I added several Gig of DDR memory module, however, the failure remains.
I suspect your driver used all IOMMU space, on OPL, one root complex is 1GB.
The page size as I know is 8K.
Please check the ddi_dma_bind called times, if your requested buf size
every time
is lower than 8k, then every bind will casue IOMMU space 8k.
You checked it in your driver, how much IOMMU space has been consumed in
your driver.
Thanks,
Winson
Each driver instance is allocating some miscellaneous buffers + 1k * 9000s
bytes buffers. The 4th instance boot up issue seems only happen on m3000
Sparc server(8G memory). I guess m3000 dma region is somewhat limited. I am
wondering how I can know its dma region range.
Tom
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