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| author | Louis Stermole <stermole@us.ibm.com> | 2019-01-03 16:43:12 -0500 |
|---|---|---|
| committer | Christian R. Geddes <crgeddes@us.ibm.com> | 2019-04-10 12:14:50 -0500 |
| commit | 7d859fce107356dda0207e050df8855dab944e21 (patch) | |
| tree | 6491dd2953e9e8a7e9d7e4b46d4e0efa79caa770 /src/import/chips | |
| parent | ff832044c09e8520d1b3475025af09c147b8d813 (diff) | |
| download | talos-hostboot-7d859fce107356dda0207e050df8855dab944e21.tar.gz talos-hostboot-7d859fce107356dda0207e050df8855dab944e21.zip | |
Add workaround for Nimbus symbol mark performance hw bug
This is the HWP portion of the fix for HW474117.
When a symbol mark is placed, it activates the WAT bit to
force exit-0 bypass disable in the ecc checker. It also
masks the FIR attention bit for the WAT.
Change-Id: Ibe8a6687d701950eb65a73d2dd16a17521b07966
Original-Change-Id: I0516e19a623880d9ed659b2e7e0a89c6facb95cc
CQ:SW453101
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/70081
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: STEPHEN GLANCY <sglancy@us.ibm.com>
Reviewed-by: Mark Pizzutillo <mark.pizzutillo@ibm.com>
Reviewed-by: ANDRE A. MARIN <aamarin@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/75754
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Tested-by: Christian R. Geddes <crgeddes@us.ibm.com>
Diffstat (limited to 'src/import/chips')
| -rw-r--r-- | src/import/chips/p9/procedures/hwp/memory/lib/workarounds/mca_workarounds.C | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/import/chips/p9/procedures/hwp/memory/lib/workarounds/mca_workarounds.C b/src/import/chips/p9/procedures/hwp/memory/lib/workarounds/mca_workarounds.C index 6bc8eaa64..d9e8f6416 100644 --- a/src/import/chips/p9/procedures/hwp/memory/lib/workarounds/mca_workarounds.C +++ b/src/import/chips/p9/procedures/hwp/memory/lib/workarounds/mca_workarounds.C @@ -175,6 +175,25 @@ fapi_try_exit: return fapi2::current_err; } +/// +/// @brief Disable bypass on port with symbol mark placed +/// @param[in] i_target the fapi2 target of the port +/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS if ok +/// @note The workaround for HW474117 applies to all EC versions, so no switch is necessary +/// +fapi2::ReturnCode disable_bypass( const fapi2::Target<fapi2::TARGET_TYPE_MCA>& i_target ) +{ + fapi2::buffer<uint64_t> l_mca_dbgr_buffer; + + // Trigger WAT logic to 'disable bypass' for the given port: set DBGR[8] + FAPI_TRY( mss::getScom(i_target, MCA_DBGR, l_mca_dbgr_buffer) ); + l_mca_dbgr_buffer.setBit<MCA_DBGR_ECC_WAT_ENABLE>(); + FAPI_TRY( mss::putScom(i_target, MCA_DBGR, l_mca_dbgr_buffer) ); + +fapi_try_exit: + return fapi2::current_err; +} + } // ns workarounds } // ns mss |
