C6424 Problems with Cache Chip Support Include Files

Michael Manness

I'm working on a C6424 DSP and need to incorporate the "csl_cache.h" include file to take care of caching issues. Unfortunately, when you do that, "csl_cache.h" references "csl_chiphal.h" which causes the compilation to fail. "csl_chiphal.h" does not have support for the C6424 chip.

Is there a standard work around to this problem?

What led to this discovery is that if you integrate the NDK with an app that uses DMA transfer to/from the UARTs, the CPU doesn't see the data transfered by the EDMA3 controller. The transfer buffer in cache is apparently not updated.

Mike

over 14 years ago

0 Brad Griffis over 14 years ago

TI__Guru*** 125430 points

Use the BIOS BCACHE APIs. I'm not even sure what csl_cache.h file you are referring to. I suspect it might be the old c6000 CSL stuff which would not include support for 6424. In any case, BCACHE is the best solution.

0 Michael Manness over 14 years ago in reply to Brad Griffis

Intellectual 390 points

Thanks Brad,

The project I inherited is using the C6000 CSL stuff. I'll dig into the BIOS BCACHE API's today. Thanks again.

Mike

0 RandyP over 14 years ago in reply to Michael Manness

TI__Guru* 84110 points

Mike,

In addition to Brad directing you to BCACHE_*, I wanted to point to some information outside that for your project. For the C6424, we moved away from the C6000 functional CSL and instead moved to a Platform Support Package (PSP). So the C6000 CSL you inherited is not compatible, fortunately indicated by the missing C6424 support in the csl_chiphal.h file.

Please see the TI Wiki Pages for more information, especially here.

Regards,
RandyP

0 Michael Manness over 14 years ago in reply to RandyP

Intellectual 390 points

Randy,

Thanks for the tip. I'll start purging that out of our code base.

Mike

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C6424 Problems with Cache Chip Support Include Files