From 9832b9dae8f9f505c7ed898a043b4f54b54597ed Mon Sep 17 00:00:00 2001 From: Oscar Mateo Date: Thu, 24 Jul 2014 17:04:30 +0100 Subject: [PATCH] drm/i915/bdw: Ring idle and stop with logical rings This is a hard one, since there is no direct hardware ring to control when in Execlists. We reuse intel_ring_idle here, but it should be fine as long as i915_add_request does the ring thing. Signed-off-by: Oscar Mateo Reviewed-by: Damien Lespiau Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_lrc.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index a88fa6e9360b..8a524baa8a6b 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -105,7 +105,24 @@ int intel_execlists_submission(struct drm_device *dev, struct drm_file *file, void intel_logical_ring_stop(struct intel_engine_cs *ring) { - /* TODO */ + struct drm_i915_private *dev_priv = ring->dev->dev_private; + int ret; + + if (!intel_ring_initialized(ring)) + return; + + ret = intel_ring_idle(ring); + if (ret && !i915_reset_in_progress(&to_i915(ring->dev)->gpu_error)) + DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n", + ring->name, ret); + + /* TODO: Is this correct with Execlists enabled? */ + I915_WRITE_MODE(ring, _MASKED_BIT_ENABLE(STOP_RING)); + if (wait_for_atomic((I915_READ_MODE(ring) & MODE_IDLE) != 0, 1000)) { + DRM_ERROR("%s :timed out trying to stop ring\n", ring->name); + return; + } + I915_WRITE_MODE(ring, _MASKED_BIT_DISABLE(STOP_RING)); } void intel_logical_ring_advance_and_submit(struct intel_ringbuffer *ringbuf) @@ -458,10 +475,13 @@ static int gen8_emit_request(struct intel_ringbuffer *ringbuf) void intel_logical_ring_cleanup(struct intel_engine_cs *ring) { + struct drm_i915_private *dev_priv = ring->dev->dev_private; + if (!intel_ring_initialized(ring)) return; - /* TODO: make sure the ring is stopped */ + intel_logical_ring_stop(ring); + WARN_ON((I915_READ_MODE(ring) & MODE_IDLE) == 0); ring->preallocated_lazy_request = NULL; ring->outstanding_lazy_seqno = 0; -- 2.39.5