[Intel-gfx] [PATCH v3 00/22] Refactor HW workaround code

[Oscar Mateo]

Main difference with v2 is the split into GT and Display workarounds (suggested
by Ville). Because that makes review even more important (which WA goes where?)
I have split the movement of WAs from init_clock_gating into separate patches
(one per GEN).

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 (22):
  drm/i915: Use a mask when applying WaProgramL3SqcReg1Default
  drm/i915: No need for RING_MAX_NONPRIV_SLOTS space
  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: Rename saved workarounds to make it explicit that they are
    context WAs
  drm/i915: Save all GT WAs and apply them at a later time
  drm/i915: Save all Whitelist WAs and apply them at a later time
  drm/i915: Create a new category of display WAs
  drm/i915: Print all workaround types correctly in debugfs
  drm/i915: Move WA BB stuff to the workarounds file as well
  drm/i915/cnl: Move GT and Display workarounds from init_clock_gating
  drm/i915/gen9: Move GT and Display workarounds from init_clock_gating
  drm/i915/gen9: Remove Gen9 WAs with no effect
  drm/i915/cfl: Move GT and Display workarounds from init_clock_gating
  drm/i915/glk: Move GT and Display workarounds from init_clock_gating
  drm/i915/kbl: Move GT and Display workarounds from init_clock_gating
  drm/i915/bxt: Move GT and Display workarounds from init_clock_gating
  drm/i915/skl: Move GT and Display workarounds from init_clock_gating
  drm/i915/chv: Move GT and Display workarounds from init_clock_gating
  drm/i915/bdw: Move GT and Display workarounds from init_clock_gating
  drm/i915: Move WaProgramL3SqcReg1Default to the workarounds file
  drm/i915: Document the i915_workarounds file

 drivers/gpu/drm/i915/Makefile            |    3 +-
 drivers/gpu/drm/i915/i915_debugfs.c      |   57 +-
 drivers/gpu/drm/i915/i915_drv.c          |    5 +
 drivers/gpu/drm/i915/i915_drv.h          |   23 +-
 drivers/gpu/drm/i915/i915_gem.c          |    3 +
 drivers/gpu/drm/i915/i915_gem_context.c  |    5 +
 drivers/gpu/drm/i915/i915_reg.h          |    4 +-
 drivers/gpu/drm/i915/intel_engine_cs.c   |  679 -------------
 drivers/gpu/drm/i915/intel_lrc.c         |  266 +----
 drivers/gpu/drm/i915/intel_pm.c          |  309 +-----
 drivers/gpu/drm/i915/intel_ringbuffer.c  |    5 +-
 drivers/gpu/drm/i915/intel_ringbuffer.h  |    3 -
 drivers/gpu/drm/i915/intel_workarounds.c | 1603 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_workarounds.h |   41 +
 14 files changed, 1737 insertions(+), 1269 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/intel_workarounds.c
 create mode 100644 drivers/gpu/drm/i915/intel_workarounds.h

-- 
1.9.1