AnsweredAssumed Answered

PCIe DMA problems with i.MX6

Question asked by Andrew Ellis on Apr 4, 2013
Branched to a new discussion



I have built a driver, which in the past has successfully been used on an xscale system, as well as x86 systems. The driver installs without any problems and I can view it with lsmod, and can see the hardware which is behind a PLX PCIe -> mPCI bridge with lspci.


There is a dma problem, which I can't get to the bottom of. I have obtained the errors from dmesg which I have attached.


Firstly can the PCIe interface be used with DMA?


Where can I find information about the memory range supported by the DMA controller so that I can modify the driver to support the correct DMA address range?

The driver has been built to use a bounce buffer.

Kind regards


Original Attachment has been moved to: