At Wed, 22 May 2002 09:56:28 -0400,
Paul Davis wrote:
>
> >basically PCI bus is accessed as LE. that's why in_le32 is used
>
> OK, well apparently on OS X, either RME didn't use standard macros for
> this (most likely), or there are no standard macros for this.
>
> >there. we can access to io without considration of endianess as long
> >as using readX/writeX.
>
> Sounds like it, yes. Very nice.
ok, then we can erase stuffs cpu_to_xxx and vice versa.
but still one thing is not certain. what does the following (in
snd_hdsp_initialize_firmware) set?
#ifdef SNDRV_BIG_ENDIAN
hdsp_write(hdsp, HDSP_jtagReg, HDSP_BIGENDIAN_MODE);
#endif
does it switch the access to big-endian? if yes, then we need
cpu_to_xxx things there (to revert the conversion in readX/writeX), or
use __raw_readX/writeX for access.
well, anyway a tester with ppc machine is wanted to confirm this...
Takashi
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