[0/5] Decode memdev info and bandwidth and implemnt latency WA

Message

Kumar, Mahesh July 26, 2018, 2:14 p.m. UTC

This series adds support to calculate system memdev parameters and calculate
total system memory bandwidth. This parameters and BW will be used to enable
WM level-0 latency workaround and display memory bandwidth related WA for gen9.

while we are here to enable IPC based on memory configuration lets also 
make sure that we override IPC value set of BIOS incase we decide to
disable IPC in KMS.

Mahesh Kumar (5):
  drm/i915/bxt: Decode memory bandwidth and parameters
  drm/i915/skl+: Decode memory bandwidth and parameters
  drm/i915: Implement 16GB dimm wa for latency level-0
  drm/i915/kbl+: Enable IPC only for symmetric memory configurations
  drm/i915/skl+: don't trust IPC value set by BIOS

 drivers/gpu/drm/i915/i915_drv.c | 308 ++++++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_drv.h |  22 +++
 drivers/gpu/drm/i915/i915_reg.h |  51 +++++++
 drivers/gpu/drm/i915/intel_pm.c |  17 ++-
 4 files changed, 395 insertions(+), 3 deletions(-)