* [5200B/slightly ot] MPC52xx LPB FIFO memory requirements
@ 2011-03-09 20:45 Albrecht Dreß
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From: Albrecht Dreß @ 2011-03-09 20:45 UTC (permalink / raw)
To: Linux PPC Development
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Hi all,
I have a slightly off-topic question regarding the use of mpc52xx_lpbfifo_submit() & friends...
In struct mpc52xx_lpbfifo_request, the element 'data' (with address 'data_phys') is apparently the chunk of data which is transferred through bestcomm, right? Dumb question: has this chunk of memory to be DMA mem (i.e. allocated via dma_alloc_coherent), or is "normal" kernel memory (kmalloc) sufficient?
Thanks,
Albrecht.
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2011-03-09 20:45 [5200B/slightly ot] MPC52xx LPB FIFO memory requirements Albrecht Dreß
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