mmGCVM_CONTEXT1_CNTL
tmp = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL, i * hub->ctx_distance);
WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL,
hub->ctx_distance = mmGCVM_CONTEXT1_CNTL - mmGCVM_CONTEXT0_CNTL;
tmp = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL, i * hub->ctx_distance);
WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL,
hub->ctx_distance = mmGCVM_CONTEXT1_CNTL - mmGCVM_CONTEXT0_CNTL;