SMP ABUS -- use pattern A to detect lane failures

p9_io_obus_linktrain
- Prior to engaging link training, send and observe pattern A in PHY
  RX capture latches
- Power down any failed lanes, with sparing for single lane failures or
  deconfiguration for multi-lane failures to be handled by DL training
  in downstream HWP code
- Adapt flow so HWP is directly callable in CCM retraining flow

p9_io_obus_dccal
- Reset attributes used by p9_io_obus_linktrain -- needed to support
  reconfig loop IPL and CCM retraining flow

p9_fab_iovalid
- Update DL state machine half link fail detection logic

p9_io_obus_attributes
- Create new attributes to support pattern A detection scheme
  ATTR_IO_OBUS_PAT_A_DETECT_RUN - flag to track per half link status, ised
                                  to enable coordinated execution on endpoints
                                  without requiring HWP interface changes
  ATTR_IO_OBUS_PAT_A_DETECT_RX_AMP_VALUE - RX amp bias, override only
  ATTR_IO_OBUS_PAT_A_CAPTURE - actual RX data pipe content, for debug
  ATTR_IO_OBUS_LANE_PDWN - actual per-lane powerdown decisions, for debug

Change-Id: Ic418000b1c50bcd6454be996e7206fa1d1690f75
CQ: SW443349
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/65737
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-by: Christopher W. Steffen <cwsteffen@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/65739
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

0 files changed, 0 insertions, 0 deletions