diff options
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/io/p9_io_obus_linktrain.C')
| -rw-r--r-- | src/import/chips/p9/procedures/hwp/io/p9_io_obus_linktrain.C | 60 |
1 files changed, 45 insertions, 15 deletions
diff --git a/src/import/chips/p9/procedures/hwp/io/p9_io_obus_linktrain.C b/src/import/chips/p9/procedures/hwp/io/p9_io_obus_linktrain.C index 6a1dbf94f..14d9f82ce 100644 --- a/src/import/chips/p9/procedures/hwp/io/p9_io_obus_linktrain.C +++ b/src/import/chips/p9/procedures/hwp/io/p9_io_obus_linktrain.C @@ -535,6 +535,7 @@ fapi2::ReturnCode p9_io_obus_linktrain(const OBUS_TGT& i_tgt) fapi2::ATTR_LINK_TRAIN_Type l_link_train; fapi2::ATTR_CHIP_EC_FEATURE_HW419022_Type l_hw419022; fapi2::ATTR_IO_OBUS_PAT_A_DETECT_RUN_Type l_pat_a_detect_run; + fapi2::ATTR_IO_OBUS_TRAIN_FOR_RECOVERY_Type l_train_for_recovery; bool l_even = true; bool l_odd = true; @@ -568,6 +569,11 @@ fapi2::ReturnCode p9_io_obus_linktrain(const OBUS_TGT& i_tgt) l_link_train), "Error from FAPI_ATTR_GET (ATTR_LINK_TRAIN)"); + FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_IO_OBUS_TRAIN_FOR_RECOVERY, + i_tgt, + l_train_for_recovery), + "Error from FAPI_ATTR_GET (ATTR_IO_OBUS_TRAIN_FOR_RECOVERY)"); + // determine link train capabilities (half/full) l_even = (l_link_train == fapi2::ENUM_ATTR_LINK_TRAIN_BOTH) || (l_link_train == fapi2::ENUM_ATTR_LINK_TRAIN_EVEN_ONLY); @@ -615,24 +621,27 @@ fapi2::ReturnCode p9_io_obus_linktrain(const OBUS_TGT& i_tgt) PATTERN_A), "Error from force_dl_pattern_send, pattern A, remote end"); - // power down any unneeded lanes (not physically connected or + // at IPL time, power down any unneeded lanes (not physically connected or // unused half-link) - for (uint8_t ii = 0; ii < MAX_LANES; ii++) + if (!l_train_for_recovery) { - if (((ii >= ((MAX_LANES / 2) - 1)) && (ii <= (MAX_LANES / 2))) || // unused lanes, always pdwn - (!l_even && (ii < ((MAX_LANES / 2) - 1))) || // even link is unused - (!l_odd && (ii >= ((MAX_LANES / 2) + 1)))) // odd link is unused + for (uint8_t ii = 0; ii < MAX_LANES; ii++) { - FAPI_TRY(pdwn_bad_lane(i_tgt, - GRP0, - ii), - "Error from pdwn_bad_lane, even, local end, lane: %d", - ii); - FAPI_TRY(pdwn_bad_lane(l_rem_tgt, - GRP0, - ii), - "Error from pdwn_bad_lane, even, remote end, lane: %d", - ii); + if (((ii >= ((MAX_LANES / 2) - 1)) && (ii <= (MAX_LANES / 2))) || // unused lanes, always pdwn + (!l_even && (ii < ((MAX_LANES / 2) - 1))) || // even link is unused + (!l_odd && (ii >= ((MAX_LANES / 2) + 1)))) // odd link is unused + { + FAPI_TRY(pdwn_bad_lane(i_tgt, + GRP0, + ii), + "Error from pdwn_bad_lane, even, local end, lane: %d", + ii); + FAPI_TRY(pdwn_bad_lane(l_rem_tgt, + GRP0, + ii), + "Error from pdwn_bad_lane, even, remote end, lane: %d", + ii); + } } } @@ -702,6 +711,27 @@ fapi2::ReturnCode p9_io_obus_linktrain(const OBUS_TGT& i_tgt) l_dl_control_mask), "Error writing DLL control register (0x%08X)!", OBUS_LL0_IOOL_CONTROL); + + if (l_even && l_train_for_recovery) + { + l_dl_control_data.setBit<OBUS_LL0_IOOL_CONTROL_LINK0_STARTUP>(); + l_dl_control_mask.clearBit<OBUS_LL0_IOOL_CONTROL_LINK0_PHY_TRAINING>(); + l_dl_control_mask.setBit<OBUS_LL0_IOOL_CONTROL_LINK0_STARTUP>(); + } + + if (l_odd && l_train_for_recovery) + { + l_dl_control_data.setBit<OBUS_LL0_IOOL_CONTROL_LINK1_STARTUP>(); + l_dl_control_mask.clearBit<OBUS_LL0_IOOL_CONTROL_LINK1_PHY_TRAINING>(); + l_dl_control_mask.setBit<OBUS_LL0_IOOL_CONTROL_LINK1_STARTUP>(); + } + + FAPI_TRY(fapi2::putScomUnderMask(i_tgt, + OBUS_LL0_IOOL_CONTROL, + l_dl_control_data, + l_dl_control_mask), + "Error writing DLL control register (0x%08X)!", + OBUS_LL0_IOOL_CONTROL); } fapi_try_exit: |
