IGU_REG_BLOCK_CONFIGURATION
if (REG_RD(PFDEV(pdev), IGU_REG_BLOCK_CONFIGURATION) & IGU_BLOCK_CONFIGURATION_REG_BACKWARD_COMP_EN)
val = REG_RD(pdev, IGU_REG_BLOCK_CONFIGURATION);
REG_WR(pdev, IGU_REG_BLOCK_CONFIGURATION, val);
val = ecore_rd(p_hwfn, p_ptt, IGU_REG_BLOCK_CONFIGURATION);
ecore_wr(p_hwfn, p_ptt, IGU_REG_BLOCK_CONFIGURATION, val);