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Re: ioRead returns 0xFFFFFFFF
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Re: ioRead returns 0xFFFFFFFF


On May 10, 2011, at 10:59 AM, Jonathan Taylor wrote:

Thanks for your reply Chris. On the subject of serialization (if I can throw in that question as well...) - what is the recommended way when serialization *is* required? I have been unable to find anything out about this on the intel platform (to my surprise!). Is there an equivalent to eieio or sync on intel? For example, if writing DMA parameters to an on-board register and writing to the register that will actually trigger the DMA transfer, is there a need to do any sort of synchronization or will that all "just happen" correctly?

For maximum safety you should insert an OSSynchronizeIO() call between memory operations and peripheral operations wherever you have any sort of dependency.

 = Mike


--
The lyf so short, the craft so long to lerne -- Chaucer





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 >Re: ioRead returns 0xFFFFFFFF (From: Jonathan Taylor <email@hidden>)
 >Re: ioRead returns 0xFFFFFFFF (From: Chris Sarcone <email@hidden>)
 >Re: ioRead returns 0xFFFFFFFF (From: Jonathan Taylor <email@hidden>)



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