u32 pattern_table_get_word()

in drivers/ddr/marvell/a38x/ddr3_training_db.c [663:847]

• 180 lines of code
• 91 McCabe index (conditional complexity)

u32 pattern_table_get_word(u32 dev_num, enum hws_pattern type, u8 index)
{
	u32 pattern = 0;
	struct mv_ddr_topology_map *tm = mv_ddr_topology_map_get();

	if (DDR3_IS_16BIT_DRAM_MODE(tm->bus_act_mask) == 0) {
		/* 32/64-bit patterns */
		switch (type) {
		case PATTERN_PBS1:
		case PATTERN_PBS2:
			if (index == 0 || index == 2 || index == 5 ||
			    index == 7)
				pattern = PATTERN_55;
			else
				pattern = PATTERN_AA;
			break;
		case PATTERN_PBS3:
			if (0 == (index & 1))
				pattern = PATTERN_55;
			else
				pattern = PATTERN_AA;
			break;
		case PATTERN_RL:
			if (index < 6)
				pattern = PATTERN_00;
			else
				pattern = PATTERN_80;
			break;
		case PATTERN_STATIC_PBS:
			pattern = pattern_table_get_static_pbs_word(index);
			break;
		case PATTERN_KILLER_DQ0:
		case PATTERN_KILLER_DQ1:
		case PATTERN_KILLER_DQ2:
		case PATTERN_KILLER_DQ3:
		case PATTERN_KILLER_DQ4:
		case PATTERN_KILLER_DQ5:
		case PATTERN_KILLER_DQ6:
		case PATTERN_KILLER_DQ7:
			pattern = pattern_table_get_killer_word(
				(u8)(type - PATTERN_KILLER_DQ0), index);
			break;
		case PATTERN_RL2:
			if (index < 6)
				pattern = PATTERN_00;
			else
				pattern = PATTERN_01;
			break;
		case PATTERN_TEST:
			if (index > 1 && index < 6)
				pattern = PATTERN_00;
			else
				pattern = PATTERN_FF;
			break;
		case PATTERN_FULL_SSO0:
		case PATTERN_FULL_SSO1:
		case PATTERN_FULL_SSO2:
		case PATTERN_FULL_SSO3:
			pattern = pattern_table_get_sso_word(
				(u8)(type - PATTERN_FULL_SSO0), index);
			break;
		case PATTERN_VREF:
			pattern = pattern_table_get_vref_word(index);
			break;
		case PATTERN_SSO_FULL_XTALK_DQ0:
		case PATTERN_SSO_FULL_XTALK_DQ1:
		case PATTERN_SSO_FULL_XTALK_DQ2:
		case PATTERN_SSO_FULL_XTALK_DQ3:
		case PATTERN_SSO_FULL_XTALK_DQ4:
		case PATTERN_SSO_FULL_XTALK_DQ5:
		case PATTERN_SSO_FULL_XTALK_DQ6:
		case PATTERN_SSO_FULL_XTALK_DQ7:
			pattern = pattern_table_get_sso_full_xtalk_word(
				(u8)(type - PATTERN_SSO_FULL_XTALK_DQ0), index);
			break;
		case PATTERN_SSO_XTALK_FREE_DQ0:
		case PATTERN_SSO_XTALK_FREE_DQ1:
		case PATTERN_SSO_XTALK_FREE_DQ2:
		case PATTERN_SSO_XTALK_FREE_DQ3:
		case PATTERN_SSO_XTALK_FREE_DQ4:
		case PATTERN_SSO_XTALK_FREE_DQ5:
		case PATTERN_SSO_XTALK_FREE_DQ6:
		case PATTERN_SSO_XTALK_FREE_DQ7:
			pattern = pattern_table_get_sso_xtalk_free_word(
				(u8)(type - PATTERN_SSO_XTALK_FREE_DQ0), index);
			break;
		case PATTERN_ISI_XTALK_FREE:
			pattern = pattern_table_get_isi_word(index);
			break;
		default:
			printf("error: %s: unsupported pattern type [%d] found\n",
			       __func__, (int)type);
			pattern = 0;
			break;
		}
	} else {
		/* 16bit patterns */
		switch (type) {
		case PATTERN_PBS1:
		case PATTERN_PBS2:
		case PATTERN_PBS3:
			pattern = PATTERN_55AA;
			break;
		case PATTERN_RL:
			if (index < 3)
				pattern = PATTERN_00;
			else
				pattern = PATTERN_80;
			break;
		case PATTERN_STATIC_PBS:
			pattern = PATTERN_00FF;
			break;
		case PATTERN_KILLER_DQ0:
		case PATTERN_KILLER_DQ1:
		case PATTERN_KILLER_DQ2:
		case PATTERN_KILLER_DQ3:
		case PATTERN_KILLER_DQ4:
		case PATTERN_KILLER_DQ5:
		case PATTERN_KILLER_DQ6:
		case PATTERN_KILLER_DQ7:
			pattern = pattern_table_get_killer_word16(
				(u8)(type - PATTERN_KILLER_DQ0), index);
			break;
		case PATTERN_RL2:
			if (index < 3)
				pattern = PATTERN_00;
			else
				pattern = PATTERN_01;
			break;
		case PATTERN_TEST:
			if ((index == 0) || (index == 3))
				pattern = 0x00000000;
			else
				pattern = 0xFFFFFFFF;
			break;
		case PATTERN_FULL_SSO0:
			pattern = 0x0000ffff;
			break;
		case PATTERN_FULL_SSO1:
		case PATTERN_FULL_SSO2:
		case PATTERN_FULL_SSO3:
			pattern = pattern_table_get_sso_word(
				(u8)(type - PATTERN_FULL_SSO1), index);
			break;
		case PATTERN_VREF:
			pattern = pattern_table_get_vref_word16(index);
			break;
		case PATTERN_SSO_FULL_XTALK_DQ0:
		case PATTERN_SSO_FULL_XTALK_DQ1:
		case PATTERN_SSO_FULL_XTALK_DQ2:
		case PATTERN_SSO_FULL_XTALK_DQ3:
		case PATTERN_SSO_FULL_XTALK_DQ4:
		case PATTERN_SSO_FULL_XTALK_DQ5:
		case PATTERN_SSO_FULL_XTALK_DQ6:
		case PATTERN_SSO_FULL_XTALK_DQ7:
			pattern = pattern_table_get_sso_full_xtalk_word16(
				(u8)(type - PATTERN_SSO_FULL_XTALK_DQ0), index);
			break;
		case PATTERN_SSO_XTALK_FREE_DQ0:
		case PATTERN_SSO_XTALK_FREE_DQ1:
		case PATTERN_SSO_XTALK_FREE_DQ2:
		case PATTERN_SSO_XTALK_FREE_DQ3:
		case PATTERN_SSO_XTALK_FREE_DQ4:
		case PATTERN_SSO_XTALK_FREE_DQ5:
		case PATTERN_SSO_XTALK_FREE_DQ6:
		case PATTERN_SSO_XTALK_FREE_DQ7:
			pattern = pattern_table_get_sso_xtalk_free_word16(
				(u8)(type - PATTERN_SSO_XTALK_FREE_DQ0), index);
			break;
		case PATTERN_ISI_XTALK_FREE:
			pattern = pattern_table_get_isi_word16(index);
			break;
		default:
			if (((int)type == 29) || ((int)type == 30))
				break;

			printf("error: %s: unsupported pattern type [%d] found\n",
			       __func__, (int)type);
			pattern = 0;
			break;
		}
	}

	return pattern;
}