diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c | 214 |
1 files changed, 107 insertions, 107 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c index 56128a7b96..3affcee7df 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c @@ -18,8 +18,8 @@ compute_cas_latency_ddr3(const dimm_params_t *dimm_params, unsigned int number_of_dimms) { unsigned int i; - unsigned int tAAmin_ps = 0; - unsigned int tCKmin_X_ps = 0; + unsigned int taamin_ps = 0; + unsigned int tckmin_x_ps = 0; unsigned int common_caslat; unsigned int caslat_actual; unsigned int retry = 16; @@ -27,26 +27,26 @@ compute_cas_latency_ddr3(const dimm_params_t *dimm_params, const unsigned int mclk_ps = get_memory_clk_period_ps(); /* compute the common CAS latency supported between slots */ - tmp = dimm_params[0].caslat_X; + tmp = dimm_params[0].caslat_x; for (i = 1; i < number_of_dimms; i++) { if (dimm_params[i].n_ranks) - tmp &= dimm_params[i].caslat_X; + tmp &= dimm_params[i].caslat_x; } common_caslat = tmp; /* compute the max tAAmin tCKmin between slots */ for (i = 0; i < number_of_dimms; i++) { - tAAmin_ps = max(tAAmin_ps, dimm_params[i].tAA_ps); - tCKmin_X_ps = max(tCKmin_X_ps, dimm_params[i].tCKmin_X_ps); + taamin_ps = max(taamin_ps, dimm_params[i].taa_ps); + tckmin_x_ps = max(tckmin_x_ps, dimm_params[i].tckmin_x_ps); } /* validate if the memory clk is in the range of dimms */ - if (mclk_ps < tCKmin_X_ps) { + if (mclk_ps < tckmin_x_ps) { printf("DDR clock (MCLK cycle %u ps) is faster than " "the slowest DIMM(s) (tCKmin %u ps) can support.\n", - mclk_ps, tCKmin_X_ps); + mclk_ps, tckmin_x_ps); } /* determine the acutal cas latency */ - caslat_actual = (tAAmin_ps + mclk_ps - 1) / mclk_ps; + caslat_actual = (taamin_ps + mclk_ps - 1) / mclk_ps; /* check if the dimms support the CAS latency */ while (!(common_caslat & (1 << caslat_actual)) && retry > 0) { caslat_actual++; @@ -80,25 +80,25 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, { unsigned int i, j; - unsigned int tCKmin_X_ps = 0; - unsigned int tCKmax_ps = 0xFFFFFFFF; - unsigned int tCKmax_max_ps = 0; - unsigned int tRCD_ps = 0; - unsigned int tRP_ps = 0; - unsigned int tRAS_ps = 0; - unsigned int tWR_ps = 0; - unsigned int tWTR_ps = 0; - unsigned int tRFC_ps = 0; - unsigned int tRRD_ps = 0; - unsigned int tRC_ps = 0; + unsigned int tckmin_x_ps = 0; + unsigned int tckmax_ps = 0xFFFFFFFF; + unsigned int tckmax_max_ps = 0; + unsigned int trcd_ps = 0; + unsigned int trp_ps = 0; + unsigned int tras_ps = 0; + unsigned int twr_ps = 0; + unsigned int twtr_ps = 0; + unsigned int trfc_ps = 0; + unsigned int trrd_ps = 0; + unsigned int trc_ps = 0; unsigned int refresh_rate_ps = 0; - unsigned int tIS_ps = 0; - unsigned int tIH_ps = 0; - unsigned int tDS_ps = 0; - unsigned int tDH_ps = 0; - unsigned int tRTP_ps = 0; - unsigned int tDQSQ_max_ps = 0; - unsigned int tQHS_ps = 0; + unsigned int tis_ps = 0; + unsigned int tih_ps = 0; + unsigned int tds_ps = 0; + unsigned int tdh_ps = 0; + unsigned int trtp_ps = 0; + unsigned int tdqsq_max_ps = 0; + unsigned int tqhs_ps = 0; unsigned int temp1, temp2; unsigned int additive_latency = 0; @@ -141,39 +141,39 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, } #endif /* - * Find minimum tCKmax_ps to find fastest slow speed, + * Find minimum tckmax_ps to find fastest slow speed, * i.e., this is the slowest the whole system can go. */ - tCKmax_ps = min(tCKmax_ps, dimm_params[i].tCKmax_ps); + tckmax_ps = min(tckmax_ps, dimm_params[i].tckmax_ps); /* Either find maximum value to determine slowest * speed, delay, time, period, etc */ - tCKmin_X_ps = max(tCKmin_X_ps, dimm_params[i].tCKmin_X_ps); - tCKmax_max_ps = max(tCKmax_max_ps, dimm_params[i].tCKmax_ps); - tRCD_ps = max(tRCD_ps, dimm_params[i].tRCD_ps); - tRP_ps = max(tRP_ps, dimm_params[i].tRP_ps); - tRAS_ps = max(tRAS_ps, dimm_params[i].tRAS_ps); - tWR_ps = max(tWR_ps, dimm_params[i].tWR_ps); - tWTR_ps = max(tWTR_ps, dimm_params[i].tWTR_ps); - tRFC_ps = max(tRFC_ps, dimm_params[i].tRFC_ps); - tRRD_ps = max(tRRD_ps, dimm_params[i].tRRD_ps); - tRC_ps = max(tRC_ps, dimm_params[i].tRC_ps); - tIS_ps = max(tIS_ps, dimm_params[i].tIS_ps); - tIH_ps = max(tIH_ps, dimm_params[i].tIH_ps); - tDS_ps = max(tDS_ps, dimm_params[i].tDS_ps); - tDH_ps = max(tDH_ps, dimm_params[i].tDH_ps); - tRTP_ps = max(tRTP_ps, dimm_params[i].tRTP_ps); - tQHS_ps = max(tQHS_ps, dimm_params[i].tQHS_ps); + tckmin_x_ps = max(tckmin_x_ps, dimm_params[i].tckmin_x_ps); + tckmax_max_ps = max(tckmax_max_ps, dimm_params[i].tckmax_ps); + trcd_ps = max(trcd_ps, dimm_params[i].trcd_ps); + trp_ps = max(trp_ps, dimm_params[i].trp_ps); + tras_ps = max(tras_ps, dimm_params[i].tras_ps); + twr_ps = max(twr_ps, dimm_params[i].twr_ps); + twtr_ps = max(twtr_ps, dimm_params[i].twtr_ps); + trfc_ps = max(trfc_ps, dimm_params[i].trfc_ps); + trrd_ps = max(trrd_ps, dimm_params[i].trrd_ps); + trc_ps = max(trc_ps, dimm_params[i].trc_ps); + tis_ps = max(tis_ps, dimm_params[i].tis_ps); + tih_ps = max(tih_ps, dimm_params[i].tih_ps); + tds_ps = max(tds_ps, dimm_params[i].tds_ps); + tdh_ps = max(tdh_ps, dimm_params[i].tdh_ps); + trtp_ps = max(trtp_ps, dimm_params[i].trtp_ps); + tqhs_ps = max(tqhs_ps, dimm_params[i].tqhs_ps); refresh_rate_ps = max(refresh_rate_ps, dimm_params[i].refresh_rate_ps); /* - * Find maximum tDQSQ_max_ps to find slowest. + * Find maximum tdqsq_max_ps to find slowest. * * FIXME: is finding the slowest value the correct * strategy for this parameter? */ - tDQSQ_max_ps = max(tDQSQ_max_ps, dimm_params[i].tDQSQ_max_ps); + tdqsq_max_ps = max(tdqsq_max_ps, dimm_params[i].tdqsq_max_ps); } outpdimm->ndimms_present = number_of_dimms - temp1; @@ -183,25 +183,25 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, return 0; } - outpdimm->tCKmin_X_ps = tCKmin_X_ps; - outpdimm->tCKmax_ps = tCKmax_ps; - outpdimm->tCKmax_max_ps = tCKmax_max_ps; - outpdimm->tRCD_ps = tRCD_ps; - outpdimm->tRP_ps = tRP_ps; - outpdimm->tRAS_ps = tRAS_ps; - outpdimm->tWR_ps = tWR_ps; - outpdimm->tWTR_ps = tWTR_ps; - outpdimm->tRFC_ps = tRFC_ps; - outpdimm->tRRD_ps = tRRD_ps; - outpdimm->tRC_ps = tRC_ps; + outpdimm->tckmin_x_ps = tckmin_x_ps; + outpdimm->tckmax_ps = tckmax_ps; + outpdimm->tckmax_max_ps = tckmax_max_ps; + outpdimm->trcd_ps = trcd_ps; + outpdimm->trp_ps = trp_ps; + outpdimm->tras_ps = tras_ps; + outpdimm->twr_ps = twr_ps; + outpdimm->twtr_ps = twtr_ps; + outpdimm->trfc_ps = trfc_ps; + outpdimm->trrd_ps = trrd_ps; + outpdimm->trc_ps = trc_ps; outpdimm->refresh_rate_ps = refresh_rate_ps; - outpdimm->tIS_ps = tIS_ps; - outpdimm->tIH_ps = tIH_ps; - outpdimm->tDS_ps = tDS_ps; - outpdimm->tDH_ps = tDH_ps; - outpdimm->tRTP_ps = tRTP_ps; - outpdimm->tDQSQ_max_ps = tDQSQ_max_ps; - outpdimm->tQHS_ps = tQHS_ps; + outpdimm->tis_ps = tis_ps; + outpdimm->tih_ps = tih_ps; + outpdimm->tds_ps = tds_ps; + outpdimm->tdh_ps = tdh_ps; + outpdimm->trtp_ps = trtp_ps; + outpdimm->tdqsq_max_ps = tdqsq_max_ps; + outpdimm->tqhs_ps = tqhs_ps; /* Determine common burst length for all DIMMs. */ temp1 = 0xff; @@ -210,7 +210,7 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, temp1 &= dimm_params[i].burst_lengths_bitmask; } } - outpdimm->all_DIMMs_burst_lengths_bitmask = temp1; + outpdimm->all_dimms_burst_lengths_bitmask = temp1; /* Determine if all DIMMs registered buffered. */ temp1 = temp2 = 0; @@ -232,19 +232,19 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, } } - outpdimm->all_DIMMs_registered = 0; - outpdimm->all_DIMMs_unbuffered = 0; + outpdimm->all_dimms_registered = 0; + outpdimm->all_dimms_unbuffered = 0; if (temp1 && !temp2) { - outpdimm->all_DIMMs_registered = 1; + outpdimm->all_dimms_registered = 1; } else if (!temp1 && temp2) { - outpdimm->all_DIMMs_unbuffered = 1; + outpdimm->all_dimms_unbuffered = 1; } else { printf("ERROR: Mix of registered buffered and unbuffered " "DIMMs detected!\n"); } temp1 = 0; - if (outpdimm->all_DIMMs_registered) + if (outpdimm->all_dimms_registered) for (j = 0; j < 16; j++) { outpdimm->rcw[j] = dimm_params[0].rcw[j]; for (i = 1; i < number_of_dimms; i++) { @@ -279,13 +279,13 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, for (i = 0; i < number_of_dimms; i++) { if (dimm_params[i].n_ranks) { temp2 = 0; - temp2 |= 1 << dimm_params[i].caslat_X; - temp2 |= 1 << dimm_params[i].caslat_X_minus_1; - temp2 |= 1 << dimm_params[i].caslat_X_minus_2; + temp2 |= 1 << dimm_params[i].caslat_x; + temp2 |= 1 << dimm_params[i].caslat_x_minus_1; + temp2 |= 1 << dimm_params[i].caslat_x_minus_2; /* * FIXME: If there was no entry for X-2 (X-1) in - * the SPD, then caslat_X_minus_2 - * (caslat_X_minus_1) contains either 255 or + * the SPD, then caslat_x_minus_2 + * (caslat_x_minus_1) contains either 255 or * 0xFFFFFFFF because that's what the glorious * __ilog2 function returns for an input of 0. * On 32-bit PowerPC, left shift counts with bit @@ -313,42 +313,42 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, if (!dimm_params[i].n_ranks) { continue; } - if (dimm_params[i].caslat_X == temp2) { - if (mclk_ps >= dimm_params[i].tCKmin_X_ps) { + if (dimm_params[i].caslat_x == temp2) { + if (mclk_ps >= dimm_params[i].tckmin_x_ps) { debug("CL = %u ok on DIMM %u at tCK=%u" " ps with its tCKmin_X_ps of %u\n", temp2, i, mclk_ps, - dimm_params[i].tCKmin_X_ps); + dimm_params[i].tckmin_x_ps); continue; } else { not_ok++; } } - if (dimm_params[i].caslat_X_minus_1 == temp2) { - unsigned int tCKmin_X_minus_1_ps - = dimm_params[i].tCKmin_X_minus_1_ps; - if (mclk_ps >= tCKmin_X_minus_1_ps) { + if (dimm_params[i].caslat_x_minus_1 == temp2) { + unsigned int tckmin_x_minus_1_ps + = dimm_params[i].tckmin_x_minus_1_ps; + if (mclk_ps >= tckmin_x_minus_1_ps) { debug("CL = %u ok on DIMM %u at " "tCK=%u ps with its " - "tCKmin_X_minus_1_ps of %u\n", + "tckmin_x_minus_1_ps of %u\n", temp2, i, mclk_ps, - tCKmin_X_minus_1_ps); + tckmin_x_minus_1_ps); continue; } else { not_ok++; } } - if (dimm_params[i].caslat_X_minus_2 == temp2) { - unsigned int tCKmin_X_minus_2_ps - = dimm_params[i].tCKmin_X_minus_2_ps; - if (mclk_ps >= tCKmin_X_minus_2_ps) { + if (dimm_params[i].caslat_x_minus_2 == temp2) { + unsigned int tckmin_x_minus_2_ps + = dimm_params[i].tckmin_x_minus_2_ps; + if (mclk_ps >= tckmin_x_minus_2_ps) { debug("CL = %u ok on DIMM %u at " "tCK=%u ps with its " - "tCKmin_X_minus_2_ps of %u\n", + "tckmin_x_minus_2_ps of %u\n", temp2, i, mclk_ps, - tCKmin_X_minus_2_ps); + tckmin_x_minus_2_ps); continue; } else { not_ok++; @@ -397,11 +397,11 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, } else { debug("Warning: not all DIMMs ECC capable, cant enable ECC\n"); } - outpdimm->all_DIMMs_ECC_capable = temp1; + outpdimm->all_dimms_ecc_capable = temp1; #ifndef CONFIG_FSL_DDR3 /* FIXME: move to somewhere else to validate. */ - if (mclk_ps > tCKmax_max_ps) { + if (mclk_ps > tckmax_max_ps) { printf("Warning: some of the installed DIMMs " "can not operate this slowly.\n"); return 1; @@ -464,10 +464,10 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, #if defined(CONFIG_FSL_DDR2) if (lowest_good_caslat < 4) { - additive_latency = (picos_to_mclk(tRCD_ps) > lowest_good_caslat) - ? picos_to_mclk(tRCD_ps) - lowest_good_caslat : 0; - if (mclk_to_picos(additive_latency) > tRCD_ps) { - additive_latency = picos_to_mclk(tRCD_ps); + additive_latency = (picos_to_mclk(trcd_ps) > lowest_good_caslat) + ? picos_to_mclk(trcd_ps) - lowest_good_caslat : 0; + if (mclk_to_picos(additive_latency) > trcd_ps) { + additive_latency = picos_to_mclk(trcd_ps); debug("setting additive_latency to %u because it was " " greater than tRCD_ps\n", additive_latency); } @@ -487,7 +487,7 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, * * AL <= tRCD(min) */ - if (mclk_to_picos(additive_latency) > tRCD_ps) { + if (mclk_to_picos(additive_latency) > trcd_ps) { printf("Error: invalid additive latency exceeds tRCD(min).\n"); return 1; } @@ -507,15 +507,15 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, */ outpdimm->additive_latency = additive_latency; - debug("tCKmin_ps = %u\n", outpdimm->tCKmin_X_ps); - debug("tRCD_ps = %u\n", outpdimm->tRCD_ps); - debug("tRP_ps = %u\n", outpdimm->tRP_ps); - debug("tRAS_ps = %u\n", outpdimm->tRAS_ps); - debug("tWR_ps = %u\n", outpdimm->tWR_ps); - debug("tWTR_ps = %u\n", outpdimm->tWTR_ps); - debug("tRFC_ps = %u\n", outpdimm->tRFC_ps); - debug("tRRD_ps = %u\n", outpdimm->tRRD_ps); - debug("tRC_ps = %u\n", outpdimm->tRC_ps); + debug("tCKmin_ps = %u\n", outpdimm->tckmin_x_ps); + debug("trcd_ps = %u\n", outpdimm->trcd_ps); + debug("trp_ps = %u\n", outpdimm->trp_ps); + debug("tras_ps = %u\n", outpdimm->tras_ps); + debug("twr_ps = %u\n", outpdimm->twr_ps); + debug("twtr_ps = %u\n", outpdimm->twtr_ps); + debug("trfc_ps = %u\n", outpdimm->trfc_ps); + debug("trrd_ps = %u\n", outpdimm->trrd_ps); + debug("trc_ps = %u\n", outpdimm->trc_ps); return 0; } |