Dma addr should use Kuseg1 for MIPS32?

[figo zhang <figo1802@xxxxxxxxx>]

hi,

I am writing a driver for MIPS32. i wirte this code for DMA addr:

dma_vaddr =(char*) __get_free_pages(GFP_KERNEL|

GFP_DMA, order);
dma_phy = virt_to_phy(dma_vaddr);

i write dma_phy to DMA base register, but why it cannot work? it should write Kseg1 space to DMA register?
I remember that it is ok for ARM/X86 .


Best,
Figo.zhang