Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

How to get Physical Address in uClinux with MMU

Hi~ I am using uClinux with mmu right now. and I want to write a driver for SGDMA(Stream to Memory). I need physical address to set up SGDMA. Is there anyone know about it? Right Now...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hi Michael

Right now, I am trying to write a driver for my SGDMA.

I just test I can create a memory space.

I want to tell my DMA he can write to this memory space.

I need to pass this start address to DMA.

But I don't know how to get physical address.

Thanks Michael for your reply.