RADEON_RBBM_STATUS
tmp = RREG32(RADEON_RBBM_STATUS) & RADEON_RBBM_FIFOCNT_MASK;
tmp = RREG32(RADEON_RBBM_STATUS);
seq_printf(m, "RBBM_STATUS 0x%08x\n", RREG32(RADEON_RBBM_STATUS));
if (RREG32(RADEON_RBBM_STATUS) & RADEON_RBBM_ACTIVE)