diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-10-25 15:39:41 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-10-25 18:47:30 +0100 |
| commit | aba5e278586b16a4fbd377e7e8403aa585d0532a (patch) | |
| tree | 121032bff9483a71eea8630a92c1574d1ca55602 /drivers/gpu/drm/i915/intel_engine_cs.c | |
| parent | 43037c86d10cea185f6518f797f6303a06e734f9 (diff) | |
drm/i915: Add a hook for making the engines idle (parking) and unparking
In the next patch, we will want to install a callback when the engines
(GT as a whole) become idle and similarly when they first become busy.
To enable that callback, first rename intel_engines_mark_idle() to
intel_engines_park() and provide the companion intel_engines_unpark().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171025143943.7661-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index f6cdc50d4237..fedb839dff61 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -1600,19 +1600,48 @@ void intel_engines_reset_default_submission(struct drm_i915_private *i915) engine->set_default_submission(engine); } -void intel_engines_mark_idle(struct drm_i915_private *i915) +/** + * intel_engines_park: called when the GT is transitioning from busy->idle + * @i915: the i915 device + * + * The GT is now idle and about to go to sleep (maybe never to wake again?). + * Time for us to tidy and put away our toys (release resources back to the + * system). + */ +void intel_engines_park(struct drm_i915_private *i915) { struct intel_engine_cs *engine; enum intel_engine_id id; for_each_engine(engine, i915, id) { + if (engine->park) + engine->park(engine); + intel_engine_disarm_breadcrumbs(engine); - i915_gem_batch_pool_fini(&engine->batch_pool); tasklet_kill(&engine->execlists.irq_tasklet); + + i915_gem_batch_pool_fini(&engine->batch_pool); engine->execlists.no_priolist = false; } } +/** + * intel_engines_unpark: called when the GT is transitioning from idle->busy + * @i915: the i915 device + * + * The GT was idle and now about to fire up with some new user requests. + */ +void intel_engines_unpark(struct drm_i915_private *i915) +{ + struct intel_engine_cs *engine; + enum intel_engine_id id; + + for_each_engine(engine, i915, id) { + if (engine->unpark) + engine->unpark(engine); + } +} + bool intel_engine_can_store_dword(struct intel_engine_cs *engine) { switch (INTEL_GEN(engine->i915)) { |