Hello,
I'm on a ruffian system and have a sound card which is quite nice
except that it only does 30 bits of address, and thus can only access
memory under the 1Gig mark, which is exactly where the DMA window starts.
Would it be possible for me to lower the starting address of the DMA
window and thus where all virt_to_bus addresses start? This would be a
major help to me as the card is quite nice in all other regards. I tried
the simple way of adjusting linux/include/asm-alpha/core_pyxis.h to:
#define PYXIS_DMA_WIN_BASE_DEFAULT (1024*1024*512)
but the kernel couldn't mount the root filesystem when I tried that
kernel (to be honest I'm not surprised). Is this possible? Is there any
way to do what I'm trying to do? Any help would be very greatly
appreciated.
-Chris
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