[Intel-gfx] [RFC PATCH v6 0/6] Refactor HW workaround code

[Oscar Mateo]

Until we agree on a design, I have removed all new code to save the actual list
of WAs and dump it in debugfs. For the moment, only shuffle things arounds until
most WAs are in the same file (and classified correctly according to the type
of WA).

>From previous versions of these series:

Currently, deciding how/where to apply new workarounds is challenging. Often,
workarounds end up applied incorrectly and get lost under certain circumstances
(e.g. a context switch or a GPU reset). This is a proposal to attempt to
eliminate some of this pain, by clarifying the current classification of
workarounds (context saved/restored, global registers, whitelisting, BB),
putting them together on the same file, and improving the existing validation
infrastructure (debugfs/i-g-t).

Oscar Mateo (6):
  drm/i915: Remove Gen9 WAs with no effect
  drm/i915: Move a bunch of workaround-related code to its own file
  drm/i915: Split out functions for different kinds of workarounds
  drm/i915: Move WA BB stuff to the workarounds file as well
  drm/i915: Create a new category of display WAs
  drm/i915: Classify GT & Display WAs correctly

 drivers/gpu/drm/i915/Makefile            |    3 +-
 drivers/gpu/drm/i915/i915_gem.c          |    3 +
 drivers/gpu/drm/i915/i915_gem_context.c  |    5 +
 drivers/gpu/drm/i915/i915_reg.h          |    3 -
 drivers/gpu/drm/i915/intel_engine_cs.c   |  682 --------------
 drivers/gpu/drm/i915/intel_lrc.c         |  264 +-----
 drivers/gpu/drm/i915/intel_pm.c          |  312 +------
 drivers/gpu/drm/i915/intel_ringbuffer.c  |    5 +-
 drivers/gpu/drm/i915/intel_ringbuffer.h  |    3 -
 drivers/gpu/drm/i915/intel_workarounds.c | 1432 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_workarounds.h |   40 +
 11 files changed, 1503 insertions(+), 1249 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/intel_workarounds.c
 create mode 100644 drivers/gpu/drm/i915/intel_workarounds.h

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1.9.1