[igt-dev] [RFC PATCH v4 0/3] new engine discovery interface

[Andi Shyti]

Hi,

In this patchset I propose an alternative way of engine discovery
thanks to the new interfaces developed by Tvrtko and Chris[4].

Thanks Chris and Tvrtko for your comments in the RFC.

V1 --> V2
=========
RFC v1: [1]
- added a demo test that simply queries the driver about the
  engines and executes a buffer (thanks Tvrtko)
- refactored the for_each_engine_ctx() macro so that what in the
  previous version was done by the "bind" function, now it's done
  in the first iteration. (Thanks Crhis)
- removed the "gem_has_ring_ctx()" because it was out of the
  scope.
- rename functions to more meaningful names

V2 --> V3
=========
RFC v2: [2]
- removed a standalone gem_query_engines_demo test and added the
  exec-ctx subtest inside gem_exec_basic (thanks Tvrtko).
- fixed most of Tvrtko's comments in [5], which consist in
  putting the mallocs igt_assert and ictls in igt_require and few
  refactoring (thanks Tvrtko).

V3 --> V4
=========
PATCH v3: [3]
- re-architectured the discovery mechanism based on Tvrtko's
  sugestion and reviews.. In this version the discovery is done
  during the device opening and stored in a NULL terminated
  array, which replaces the existing intel_execution_engines2
  that is mainly used as a reference.

Andi

[1] RFC v1: https://lists.freedesktop.org/archives/igt-dev/2018-November/007025.html
[2] RFC v2: https://lists.freedesktop.org/archives/igt-dev/2018-November/007079.html
[3] PATCH v3: https://lists.freedesktop.org/archives/igt-dev/2018-November/007148.html
[4] git://people.freedesktop.org/~tursulin/drm-intel
[5] https://lists.freedesktop.org/archives/igt-dev/2018-November/007100.html

Andi Shyti (3):
  include/drm-uapi: import i915_drm.h header file
  lib: implement new engine discovery interface
  tests: gem_exec_basic: add "exec-ctx" buffer execution demo test

 include/drm-uapi/i915_drm.h | 209 +++++++++++++++++++++++++++++++++++-
 lib/drmtest.c               |  12 ++-
 lib/igt_gt.c                |  99 +++++++++++++++--
 lib/igt_gt.h                |  10 +-
 tests/i915/gem_exec_basic.c |  33 ++++++
 5 files changed, 350 insertions(+), 13 deletions(-)

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2.20.1