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Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.

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Old 11-06-2010, 04:13 PM   #1
zvivered
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Registered: Sep 2007
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Linux 2.6.27: Cache invalidate inside Device Driver


Hi,

I'm using "__get_free_pages(GFP_KERNEL, order)" to allocate a buffer used for DMA. The DMA is initiated by an FPGA connected to the computer via PCI.
The destination of the DMA is the RAM of the embedded computer.

How can I invalidate the allocated buffer ?

Thanks.
 
  


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