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| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2019-10-17 17:18:52 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-18 00:06:25 +0100 |
| commit | a50134b1983b8860e0e74e41579cbb19a7304ca7 (patch) | |
| tree | 5e7fc23ec849aeb5a3fdbeb1dd3d0fe498c567cd /drivers/gpu/drm/i915/gt/intel_engine_cs.c | |
| parent | 1dfffa0051eae890ce36924651ecff60df5d779e (diff) | |
| download | lwn-a50134b1983b8860e0e74e41579cbb19a7304ca7.tar.gz lwn-a50134b1983b8860e0e74e41579cbb19a7304ca7.zip | |
drm/i915: Make for_each_engine_masked work on intel_gt
Medium term goal is to eliminate the i915->engine[] array and to get there
we have recently introduced equivalent array in intel_gt. Now we need to
migrate the code further towards this state.
This next step is to eliminate usage of i915->engines[] from the
for_each_engine_masked iterator.
For this to work we also need to use engine->id as index when populating
the gt->engine[] array and adjust the default engine set indexing to use
engine->legacy_idx instead of assuming gt->engines[] indexing.
v2:
* Populate gt->engine[] earlier.
* Check that we don't duplicate engine->legacy_idx
v3:
* Work around the initialization order issue between default_engines()
and intel_engines_driver_register() which sets engine->legacy_idx for
now. It will be fixed properly later.
v4:
* Merge with forgotten v2.5.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191017161852.8836-1-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_engine_cs.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 5051a1fd2565..e514c68b0713 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -277,6 +277,9 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id) BUILD_BUG_ON(MAX_ENGINE_CLASS >= BIT(GEN11_ENGINE_CLASS_WIDTH)); BUILD_BUG_ON(MAX_ENGINE_INSTANCE >= BIT(GEN11_ENGINE_INSTANCE_WIDTH)); + if (GEM_DEBUG_WARN_ON(id >= ARRAY_SIZE(gt->engine))) + return -EINVAL; + if (GEM_DEBUG_WARN_ON(info->class > MAX_ENGINE_CLASS)) return -EINVAL; @@ -293,6 +296,7 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id) BUILD_BUG_ON(BITS_PER_TYPE(engine->mask) < I915_NUM_ENGINES); engine->id = id; + engine->legacy_idx = INVALID_ENGINE; engine->mask = BIT(id); engine->i915 = gt->i915; engine->gt = gt; @@ -328,6 +332,7 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id) intel_engine_sanitize_mmio(engine); gt->engine_class[info->class][info->instance] = engine; + gt->engine[id] = engine; intel_engine_add_user(engine); gt->i915->engine[id] = engine; |