From 0542524944c2ae3264ca8e6b5f0c7a111f09a2c2 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 3 Mar 2017 12:19:47 +0000 Subject: [PATCH] drm/i915: Generalise wait for execlists to be idle The code to check for execlists completion is generic, so move it to intel_engine_cs.c, where we can reuse the new intel_engine_is_idle(). Signed-off-by: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/20170303121947.20482-2-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala --- drivers/gpu/drm/i915/i915_gem.c | 8 +++---- drivers/gpu/drm/i915/intel_engine_cs.c | 13 +++++++++++ drivers/gpu/drm/i915/intel_lrc.c | 28 ----------------------- drivers/gpu/drm/i915/intel_lrc.h | 1 - drivers/gpu/drm/i915/intel_ringbuffer.h | 1 + drivers/gpu/drm/i915/selftests/i915_gem_request.c | 2 +- 6 files changed, 19 insertions(+), 34 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index edc59bd..f7e85fb 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2959,8 +2959,8 @@ i915_gem_idle_work_handler(struct work_struct *work) * new request is submitted. */ wait_for(READ_ONCE(dev_priv->gt.active_requests) || - intel_execlists_idle(dev_priv), 10); - + intel_engines_are_idle(dev_priv), + 10); if (READ_ONCE(dev_priv->gt.active_requests)) return; @@ -2985,7 +2985,7 @@ i915_gem_idle_work_handler(struct work_struct *work) if (dev_priv->gt.active_requests) goto out_unlock; - if (wait_for(intel_execlists_idle(dev_priv), 10)) + if (wait_for(intel_engines_are_idle(dev_priv), 10)) DRM_ERROR("Timeout waiting for engines to idle\n"); for_each_engine(engine, dev_priv, id) { @@ -4287,7 +4287,7 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv) * reset the GPU back to its idle, low power state. */ WARN_ON(dev_priv->gt.awake); - WARN_ON(!intel_execlists_idle(dev_priv)); + WARN_ON(!intel_engines_are_idle(dev_priv)); /* * Neither the BIOS, ourselves or any other kernel diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 53d65dc..5fd4883 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -1102,6 +1102,19 @@ bool intel_engine_is_idle(struct intel_engine_cs *engine) return true; } +bool intel_engines_are_idle(struct drm_i915_private *dev_priv) +{ + struct intel_engine_cs *engine; + enum intel_engine_id id; + + for_each_engine(engine, dev_priv, id) { + if (!intel_engine_is_idle(engine)) + return false; + } + + return true; +} + #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 f9a8545..3834a84 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -498,34 +498,6 @@ static bool execlists_elsp_idle(struct intel_engine_cs *engine) return !engine->execlist_port[0].request; } -/** - * intel_execlists_idle() - Determine if all engine submission ports are idle - * @dev_priv: i915 device private - * - * Return true if there are no requests pending on any of the submission ports - * of any engines. - */ -bool intel_execlists_idle(struct drm_i915_private *dev_priv) -{ - struct intel_engine_cs *engine; - enum intel_engine_id id; - - if (!i915.enable_execlists) - return true; - - for_each_engine(engine, dev_priv, id) { - /* Interrupt/tasklet pending? */ - if (test_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted)) - return false; - - /* Both ports drained, no more ELSP submission? */ - if (!execlists_elsp_idle(engine)) - return false; - } - - return true; -} - static bool execlists_elsp_ready(const struct intel_engine_cs *engine) { const struct execlist_port *port = engine->execlist_port; diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index c8009c7..5fc0776 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -88,6 +88,5 @@ uint64_t intel_lr_context_descriptor(struct i915_gem_context *ctx, 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); -bool intel_execlists_idle(struct drm_i915_private *dev_priv); #endif /* _INTEL_LRC_H_ */ diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 3858076..55a6a3f 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -665,5 +665,6 @@ 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); #endif /* _INTEL_RINGBUFFER_H_ */ diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_request.c b/drivers/gpu/drm/i915/selftests/i915_gem_request.c index 42bdeac..926b24c 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_request.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_request.c @@ -303,7 +303,7 @@ static int end_live_test(struct live_test *t) { struct drm_i915_private *i915 = t->i915; - if (wait_for(intel_execlists_idle(i915), 1)) { + if (wait_for(intel_engines_are_idle(i915), 1)) { pr_err("%s(%s): GPU not idle\n", t->func, t->name); return -EIO; } -- 2.7.4