From 54accfe0d6a693299c5f79f254c30d9ba68c38fa Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Mon, 21 Mar 2016 13:22:37 -0500 Subject: nb/amd/mct_ddr3: Set the NBP0 read latency from P0 trained values During maximum read latency training on Family 15h processors, the maximum read latency was incorrectly set from the NBP1 value instead of the correct NBP0 value. Modify maximimum read latency training to explicitly operate on the NBP0 value, and store the previously calculated NBP1 value for reference by other portions of the training algorithm. Change-Id: I5d4a6c2def83df3e23f1a4c598314c31a0172cd7 Signed-off-by: Timothy Pearson Reviewed-on: https://review.coreboot.org/14150 Reviewed-by: Martin Roth Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand --- src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c') diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c b/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c index 9a0d372528..524bea00e7 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c @@ -998,7 +998,7 @@ static void dqsTrainRcvrEn_SW_Fam10(struct MCTStatStruc *pMCTstat, printk(BIOS_DEBUG, "TrainRcvrEn: CH_MaxRdLat:\n"); for(ChannelDTD = 0; ChannelDTD<2; ChannelDTD++) { printk(BIOS_DEBUG, "Channel:%x: %x\n", - ChannelDTD, pDCTstat->CH_MaxRdLat[ChannelDTD]); + ChannelDTD, pDCTstat->CH_MaxRdLat[ChannelDTD][0]); } } #endif @@ -1498,7 +1498,7 @@ static void dqsTrainRcvrEn_SW_Fam15(struct MCTStatStruc *pMCTstat, printk(BIOS_DEBUG, "TrainRcvrEn: CH_MaxRdLat:\n"); for(ChannelDTD = 0; ChannelDTD<2; ChannelDTD++) { printk(BIOS_DEBUG, "Channel:%x: %x\n", - ChannelDTD, pDCTstat->CH_MaxRdLat[ChannelDTD]); + ChannelDTD, pDCTstat->CH_MaxRdLat[ChannelDTD][0]); } } #endif @@ -1533,7 +1533,7 @@ static void dqsTrainRcvrEn_SW_Fam15(struct MCTStatStruc *pMCTstat, } static void write_max_read_latency_to_registers(struct MCTStatStruc *pMCTstat, - struct DCTStatStruc *pDCTstat, uint8_t dct, uint16_t latency) + struct DCTStatStruc *pDCTstat, uint8_t dct, uint16_t *latency) { uint32_t dword; uint8_t nb_pstate; @@ -1541,7 +1541,7 @@ static void write_max_read_latency_to_registers(struct MCTStatStruc *pMCTstat, for (nb_pstate = 0; nb_pstate < 2; nb_pstate++) { dword = Get_NB32_DCT_NBPstate(pDCTstat->dev_dct, dct, nb_pstate, 0x210); dword &= ~(0x3ff << 22); - dword |= ((latency & 0x3ff) << 22); + dword |= ((latency[nb_pstate] & 0x3ff) << 22); Set_NB32_DCT_NBPstate(pDCTstat->dev_dct, dct, nb_pstate, 0x210, dword); } } @@ -1665,7 +1665,7 @@ static void dqsTrainMaxRdLatency_SW_Fam15(struct MCTStatStruc *pMCTstat, /* 2.10.5.8.5.1.4 * Incrementally test each MaxRdLatency candidate */ - for (; pDCTstat->CH_MaxRdLat[Channel] < 0x3ff; pDCTstat->CH_MaxRdLat[Channel]++) { + for (; pDCTstat->CH_MaxRdLat[Channel][0] < 0x3ff; pDCTstat->CH_MaxRdLat[Channel][0]++) { write_max_read_latency_to_registers(pMCTstat, pDCTstat, Channel, pDCTstat->CH_MaxRdLat[Channel]); read_dram_dqs_training_pattern_fam15(pMCTstat, pDCTstat, Channel, current_worst_case_total_delay_dimm << 1, 0xff, 0); dword = Get_NB32_DCT(dev, Channel, 0x268) & 0x3ffff; @@ -1683,8 +1683,8 @@ static void dqsTrainMaxRdLatency_SW_Fam15(struct MCTStatStruc *pMCTstat, dword = Get_NB32(pDCTstat->dev_nbctl, (0x160 + (nb_pstate * 4))); /* Retrieve NbDid, NbFid */ nb_clk = (200 * (((dword >> 1) & 0x1f) + 0x4)) / (((dword >> 7) & 0x1)?2:1); - pDCTstat->CH_MaxRdLat[Channel]++; - pDCTstat->CH_MaxRdLat[Channel] += ((((uint64_t)15 * 100000000000ULL) / ((uint64_t)fam15h_freq_tab[mem_clk] * 1000000ULL)) + pDCTstat->CH_MaxRdLat[Channel][0]++; + pDCTstat->CH_MaxRdLat[Channel][0] += ((((uint64_t)15 * 100000000000ULL) / ((uint64_t)fam15h_freq_tab[mem_clk] * 1000000ULL)) * ((uint64_t)nb_clk * 1000)) / 1000000000ULL; write_max_read_latency_to_registers(pMCTstat, pDCTstat, Channel, pDCTstat->CH_MaxRdLat[Channel]); @@ -1712,7 +1712,7 @@ static void dqsTrainMaxRdLatency_SW_Fam15(struct MCTStatStruc *pMCTstat, printk(BIOS_DEBUG, "TrainMaxRdLatency: CH_MaxRdLat:\n"); for(ChannelDTD = 0; ChannelDTD<2; ChannelDTD++) { printk(BIOS_DEBUG, "Channel:%x: %x\n", - ChannelDTD, pDCTstat->CH_MaxRdLat[ChannelDTD]); + ChannelDTD, pDCTstat->CH_MaxRdLat[ChannelDTD][0]); } } #endif @@ -1904,9 +1904,9 @@ static void mct_SetMaxLatency_D(struct DCTStatStruc *pDCTstat, u8 Channel, u16 D */ SubTotal += (cpu_val_n) / 2; - pDCTstat->CH_MaxRdLat[Channel] = SubTotal; + pDCTstat->CH_MaxRdLat[Channel][0] = SubTotal; if(pDCTstat->GangedMode) { - pDCTstat->CH_MaxRdLat[1] = SubTotal; + pDCTstat->CH_MaxRdLat[1][0] = SubTotal; } /* Program the F2x[1, 0]78[MaxRdLatency] register with -- cgit v1.2.3