mmSDMA1_GFX_CONTEXT_CNTL
data = RREG32(mmSDMA1_GFX_CONTEXT_CNTL);
WREG32(mmSDMA1_GFX_CONTEXT_CNTL, data);
SOC15_REG_OFFSET(SDMA1, 0, mmSDMA1_GFX_CONTEXT_CNTL) :