It turns out that we may want to restore the original
engine->submit_request (and engine->schedule) callbacks from more than
just the guc <-> execlists transition. Move this to a vfunc so we can
have a common interface.
v2: Move initial selection to intel_engines_init_common(), repaint vfunc
with engine->set_default_submission (and a similar colour for the
helper).
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_guc_submission.c | 2 +-
drivers/gpu/drm/i915/intel_engine_cs.c | 12 ++++++++++++
drivers/gpu/drm/i915/intel_lrc.c | 15 +++++----------
drivers/gpu/drm/i915/intel_lrc.h | 1 -
drivers/gpu/drm/i915/intel_ringbuffer.c | 15 +++++++++++++--
drivers/gpu/drm/i915/intel_ringbuffer.h | 4 ++++
6 files changed, 35 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 46acdfb4a03a..a3636b31ebc3 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -1136,7 +1136,7 @@ void i915_guc_submission_disable(struct drm_i915_private *dev_priv)
return;
/* Revert back to manual ELSP submission */
- intel_execlists_enable_submission(dev_priv);
+ intel_engines_reset_default_submission(dev_priv);
}
void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 17e7fbf40e28..4200faa520c7 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -193,6 +193,7 @@ int intel_engines_init(struct drm_i915_private *dev_priv)
goto cleanup;
}
+ GEM_BUG_ON(!engine->submit_request);
mask |= ENGINE_MASK(id);
}
@@ -343,6 +344,8 @@ int intel_engine_init_common(struct intel_engine_cs *engine)
{
int ret;
+ engine->set_default_submission(engine);
+
/* We may need to do things with the shrinker which
* require us to immediately switch back to the default
* context. This can cause a problem as pinning the
@@ -1116,6 +1119,15 @@ bool intel_engines_are_idle(struct drm_i915_private *dev_priv)
return true;
}
+void intel_engines_reset_default_submission(struct drm_i915_private *i915)
+{
+ struct intel_engine_cs *engine;
+ enum intel_engine_id id;
+
+ for_each_engine(engine, i915, id)
+ engine->set_default_submission(engine);
+}
+
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_engine.c"
#endif
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index e1195b975ef6..0e847d7ee0f3 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1558,15 +1558,10 @@ void intel_logical_ring_cleanup(struct intel_engine_cs *engine)
kfree(engine);
}
-void intel_execlists_enable_submission(struct drm_i915_private *dev_priv)
+static void execlists_set_default_submission(struct intel_engine_cs *engine)
{
- struct intel_engine_cs *engine;
- enum intel_engine_id id;
-
- for_each_engine(engine, dev_priv, id) {
- engine->submit_request = execlists_submit_request;
- engine->schedule = execlists_schedule;
- }
+ engine->submit_request = execlists_submit_request;
+ engine->schedule = execlists_schedule;
}
static void
@@ -1584,8 +1579,8 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine)
engine->emit_flush = gen8_emit_flush;
engine->emit_breadcrumb = gen8_emit_breadcrumb;
engine->emit_breadcrumb_sz = gen8_emit_breadcrumb_sz;
- engine->submit_request = execlists_submit_request;
- engine->schedule = execlists_schedule;
+
+ engine->set_default_submission = execlists_set_default_submission;
engine->irq_enable = gen8_logical_ring_enable_irq;
engine->irq_disable = gen8_logical_ring_disable_irq;
diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index 5fc07761caff..e8015e7bf4e9 100644
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -87,6 +87,5 @@ uint64_t intel_lr_context_descriptor(struct i915_gem_context *ctx,
/* Execlists */
int intel_sanitize_enable_execlists(struct drm_i915_private *dev_priv,
int enable_execlists);
-void intel_execlists_enable_submission(struct drm_i915_private *dev_priv);
#endif /* _INTEL_LRC_H_ */
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 4a864f8c9387..1befcdf9b646 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2050,6 +2050,16 @@ static void intel_ring_init_irq(struct drm_i915_private *dev_priv,
}
}
+static void i9xx_set_default_submission(struct intel_engine_cs *engine)
+{
+ engine->submit_request = i9xx_submit_request;
+}
+
+static void gen6_bsd_set_default_submission(struct intel_engine_cs *engine)
+{
+ engine->submit_request = gen6_bsd_submit_request;
+}
+
static void intel_ring_default_vfuncs(struct drm_i915_private *dev_priv,
struct intel_engine_cs *engine)
{
@@ -2080,7 +2090,8 @@ static void intel_ring_default_vfuncs(struct drm_i915_private *dev_priv,
engine->emit_breadcrumb_sz++;
}
}
- engine->submit_request = i9xx_submit_request;
+
+ engine->set_default_submission = i9xx_set_default_submission;
if (INTEL_GEN(dev_priv) >= 8)
engine->emit_bb_start = gen8_emit_bb_start;
@@ -2165,7 +2176,7 @@ int intel_init_bsd_ring_buffer(struct intel_engine_cs *engine)
if (INTEL_GEN(dev_priv) >= 6) {
/* gen6 bsd needs a special wa for tail updates */
if (IS_GEN6(dev_priv))
- engine->submit_request = gen6_bsd_submit_request;
+ engine->set_default_submission = gen6_bsd_set_default_submission;
engine->emit_flush = gen6_bsd_ring_flush;
if (INTEL_GEN(dev_priv) < 8)
engine->irq_enable_mask = GT_BSD_USER_INTERRUPT;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 8bdba18420fa..847aea554464 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -273,6 +273,8 @@ struct intel_engine_cs {
void (*reset_hw)(struct intel_engine_cs *engine,
struct drm_i915_gem_request *req);
+ void (*set_default_submission)(struct intel_engine_cs *engine);
+
int (*context_pin)(struct intel_engine_cs *engine,
struct i915_gem_context *ctx);
void (*context_unpin)(struct intel_engine_cs *engine,
@@ -676,4 +678,6 @@ static inline u32 *gen8_emit_pipe_control(u32 *batch, u32 flags, u32 offset)
bool intel_engine_is_idle(struct intel_engine_cs *engine);
bool intel_engines_are_idle(struct drm_i915_private *dev_priv);
+void intel_engines_reset_default_submission(struct drm_i915_private *i915);
+
#endif /* _INTEL_RINGBUFFER_H_ */
--
2.11.0
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