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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-05-17 22:26:31 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-05-18 09:35:21 +0100 |
| commit | 01278cb143955f4b592568d1756f1baf506245c2 (patch) | |
| tree | c2e8cf548a4dd193d8268dccc780458cb35378fd /drivers/gpu/drm/i915/intel_engine_cs.c | |
| parent | 4e0d64dba816adf18c17488d38ede67a3d0e9b40 (diff) | |
| download | linux-stable-01278cb143955f4b592568d1756f1baf506245c2.tar.gz linux-stable-01278cb143955f4b592568d1756f1baf506245c2.tar.bz2 linux-stable-01278cb143955f4b592568d1756f1baf506245c2.zip | |
drm/i915: Move fiddling with engine->last_retired_context
Move the knowledge about resetting the current context tracking on the
engine from inside i915_gem_context.c into intel_engine_cs.c
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180517212633.24934-2-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 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 7983b8a1ad44..9e618aab6568 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -1096,6 +1096,29 @@ void intel_engines_unpark(struct drm_i915_private *i915) } } +/** + * intel_engine_lost_context: called when the GPU is reset into unknown state + * @engine: the engine + * + * We have either reset the GPU or otherwise about to lose state tracking of + * the current GPU logical state (e.g. suspend). On next use, it is therefore + * imperative that we make no presumptions about the current state and load + * from scratch. + */ +void intel_engine_lost_context(struct intel_engine_cs *engine) +{ + struct i915_gem_context *ctx; + + lockdep_assert_held(&engine->i915->drm.struct_mutex); + + engine->legacy_active_context = NULL; + engine->legacy_active_ppgtt = NULL; + + ctx = fetch_and_zero(&engine->last_retired_context); + if (ctx) + intel_context_unpin(ctx, engine); +} + bool intel_engine_can_store_dword(struct intel_engine_cs *engine) { switch (INTEL_GEN(engine->i915)) { |