Re: sun4v_data_access_exception during access to hardware

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From: Alex Mach <alexvm12e@xxxxxxx>
Date: Thu, 13 May 2010 14:18:58 +0400

> Hello,
> 
> I'd like use ethoc driver for OpenCores MAC under Linux (2.6.33). I'm using OpenSparc T1 on FPGA. I have hardware device (OpenCores MAC) at address 0xFFF0C2C100. So I added device to platform bus with IORESOURCE_MEM (io memory space) at 0xFFF0C2C100. 
> 
> devm_ioremap_nocache() return OK but during ethoc driver initialization I have following messages:

It's trying to call the dma_*() APIs with a NULL pointer.

That isn't supported.
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