[Intel-gfx] [PATCH 0/8] Support for more than two execlist ports

[Mika Kuoppala]

Hi,

Here is a patchset to allow power-of-two number of execlist
ports configurable at init time. The purpose is to support
more than two ports (contexts) for guc submission.

I did few runs of gem_exec_nop and gem_exec_ctx on non guc
paths to verify that these don't regress the hw submission
path. I expected a neutral or minor negative effect but
there is an improvement.

These needs to be rebased on top of Michał Winiarski's
coalesced requests patch, but to get comments on the native side
of handling and general approach, here it is.

-Mika

Mika Kuoppala (8):
  drm/i915: Make own struct for execlist items
  drm/i915: Wrap port cancellation into a function
  drm/i915: Add execlist_port_complete
  drm/i915: Make execlist port count variable
  drm/i915: Introduce iterators for execlist ports
  drm/i915: Introduce execlist_port_* accessors
  drm/i915: Move execlist initialization into intel_engine_cs.c
  drm/i915: Keep track of reserved execlist ports

 drivers/gpu/drm/i915/i915_debugfs.c        |   9 +-
 drivers/gpu/drm/i915/i915_drv.h            |   3 +-
 drivers/gpu/drm/i915/i915_gem.c            |  17 ++-
 drivers/gpu/drm/i915/i915_gpu_error.c      |  18 ++-
 drivers/gpu/drm/i915/i915_guc_submission.c |  59 ++++++----
 drivers/gpu/drm/i915/i915_irq.c            |   5 +-
 drivers/gpu/drm/i915/intel_engine_cs.c     |  39 +++++--
 drivers/gpu/drm/i915/intel_lrc.c           | 159 ++++++++++++++------------
 drivers/gpu/drm/i915/intel_ringbuffer.h    | 173 +++++++++++++++++++++++++----
 9 files changed, 339 insertions(+), 143 deletions(-)

-- 
2.11.0