On Mon, Feb 09, 2015 at 02:46:30PM -0200, Paulo Zanoni wrote:
> From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
>
> We want to port FBC to the frontbuffer tracking infrastructure, but
> for that we need to know what caused the object invalidation/flush so
> we can react accordingly: CPU mmaps need manual, GTT mmaps and
> flips don't need handling and ring rendering needs nukes.
>
> v2: - s/ORIGIN_RENDER/ORIGIN_CS/ (Daniel, Rodrigo)
> - Fix copy/pasted wrong documentation
> - Rebase
> v3: - Rebase
>
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> (v2)
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Sorry for being really late with my review here. I fully agree that origin
for invalidate makes a lot of sense, but for flush it kinda doesn't.
There's no origin for a flush, it just means that any previous rendering
(from _any_ origin) has now completed.
I've looked ahead a bit and I'll comment on the patch that uses the flush
origin what should imo be used instead.
Merged the first 3 patches from this series meanwhile, thanks.
-Daniel
> ---
> drivers/gpu/drm/i915/i915_drv.h | 7 +++++++
> drivers/gpu/drm/i915/i915_gem.c | 10 +++++-----
> drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 +-
> drivers/gpu/drm/i915/intel_drv.h | 11 +++++++----
> drivers/gpu/drm/i915/intel_frontbuffer.c | 15 ++++++++++-----
> 5 files changed, 30 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index c0b8644..d578211 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -771,6 +771,13 @@ struct intel_context {
> struct list_head link;
> };
>
> +enum fb_op_origin {
> + ORIGIN_GTT,
> + ORIGIN_CPU,
> + ORIGIN_CS,
> + ORIGIN_FLIP,
> +};
> +
> struct i915_fbc {
> unsigned long uncompressed_size;
> unsigned threshold;
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index c26d36c..3d198f8 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -2310,7 +2310,7 @@ i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj)
> list_move_tail(&vma->mm_list, &vma->vm->inactive_list);
> }
>
> - intel_fb_obj_flush(obj, true);
> + intel_fb_obj_flush(obj, true, ORIGIN_CS);
>
> list_del_init(&obj->ring_list);
>
> @@ -3677,7 +3677,7 @@ i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj)
> old_write_domain = obj->base.write_domain;
> obj->base.write_domain = 0;
>
> - intel_fb_obj_flush(obj, false);
> + intel_fb_obj_flush(obj, false, ORIGIN_GTT);
>
> trace_i915_gem_object_change_domain(obj,
> obj->base.read_domains,
> @@ -3699,7 +3699,7 @@ i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj)
> old_write_domain = obj->base.write_domain;
> obj->base.write_domain = 0;
>
> - intel_fb_obj_flush(obj, false);
> + intel_fb_obj_flush(obj, false, ORIGIN_CPU);
>
> trace_i915_gem_object_change_domain(obj,
> obj->base.read_domains,
> @@ -3764,7 +3764,7 @@ i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write)
> }
>
> if (write)
> - intel_fb_obj_invalidate(obj, NULL);
> + intel_fb_obj_invalidate(obj, NULL, ORIGIN_GTT);
>
> trace_i915_gem_object_change_domain(obj,
> old_read_domains,
> @@ -4079,7 +4079,7 @@ i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write)
> }
>
> if (write)
> - intel_fb_obj_invalidate(obj, NULL);
> + intel_fb_obj_invalidate(obj, NULL, ORIGIN_CPU);
>
> trace_i915_gem_object_change_domain(obj,
> old_read_domains,
> diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> index b773368..f4342f0 100644
> --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> @@ -971,7 +971,7 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas,
> obj->dirty = 1;
> i915_gem_request_assign(&obj->last_write_req, req);
>
> - intel_fb_obj_invalidate(obj, ring);
> + intel_fb_obj_invalidate(obj, ring, ORIGIN_CS);
>
> /* update for the implicit flush after a batch */
> obj->base.write_domain &= ~I915_GEM_GPU_DOMAINS;
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 76b3c20..a73d091 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -853,13 +853,15 @@ void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state);
>
> /* intel_frontbuffer.c */
> void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,
> - struct intel_engine_cs *ring);
> + struct intel_engine_cs *ring,
> + enum fb_op_origin origin);
> void intel_frontbuffer_flip_prepare(struct drm_device *dev,
> unsigned frontbuffer_bits);
> void intel_frontbuffer_flip_complete(struct drm_device *dev,
> unsigned frontbuffer_bits);
> void intel_frontbuffer_flush(struct drm_device *dev,
> - unsigned frontbuffer_bits);
> + unsigned frontbuffer_bits,
> + enum fb_op_origin origin);
> /**
> * intel_frontbuffer_flip - synchronous frontbuffer flip
> * @dev: DRM device
> @@ -875,12 +877,13 @@ static inline
> void intel_frontbuffer_flip(struct drm_device *dev,
> unsigned frontbuffer_bits)
> {
> - intel_frontbuffer_flush(dev, frontbuffer_bits);
> + intel_frontbuffer_flush(dev, frontbuffer_bits, ORIGIN_FLIP);
> }
>
> int intel_fb_align_height(struct drm_device *dev, int height,
> unsigned int tiling);
> -void intel_fb_obj_flush(struct drm_i915_gem_object *obj, bool retire);
> +void intel_fb_obj_flush(struct drm_i915_gem_object *obj, bool retire,
> + enum fb_op_origin origin);
>
>
> /* intel_audio.c */
> diff --git a/drivers/gpu/drm/i915/intel_frontbuffer.c b/drivers/gpu/drm/i915/intel_frontbuffer.c
> index 73cb6e0..0a773981 100644
> --- a/drivers/gpu/drm/i915/intel_frontbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_frontbuffer.c
> @@ -127,6 +127,7 @@ static void intel_mark_fb_busy(struct drm_device *dev,
> * intel_fb_obj_invalidate - invalidate frontbuffer object
> * @obj: GEM object to invalidate
> * @ring: set for asynchronous rendering
> + * @origin: which operation caused the invalidation
> *
> * This function gets called every time rendering on the given object starts and
> * frontbuffer caching (fbc, low refresh rate for DRRS, panel self refresh) must
> @@ -135,7 +136,8 @@ static void intel_mark_fb_busy(struct drm_device *dev,
> * scheduled.
> */
> void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,
> - struct intel_engine_cs *ring)
> + struct intel_engine_cs *ring,
> + enum fb_op_origin origin)
> {
> struct drm_device *dev = obj->base.dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> @@ -164,6 +166,7 @@ void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,
> * intel_frontbuffer_flush - flush frontbuffer
> * @dev: DRM device
> * @frontbuffer_bits: frontbuffer plane tracking bits
> + * @origin: which operation caused the flush
> *
> * This function gets called every time rendering on the given planes has
> * completed and frontbuffer caching can be started again. Flushes will get
> @@ -172,7 +175,8 @@ void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,
> * Can be called without any locks held.
> */
> void intel_frontbuffer_flush(struct drm_device *dev,
> - unsigned frontbuffer_bits)
> + unsigned frontbuffer_bits,
> + enum fb_op_origin origin)
> {
> struct drm_i915_private *dev_priv = dev->dev_private;
>
> @@ -201,13 +205,14 @@ void intel_frontbuffer_flush(struct drm_device *dev,
> * intel_fb_obj_flush - flush frontbuffer object
> * @obj: GEM object to flush
> * @retire: set when retiring asynchronous rendering
> + * @origin: which operation caused the flush
> *
> * This function gets called every time rendering on the given object has
> * completed and frontbuffer caching can be started again. If @retire is true
> * then any delayed flushes will be unblocked.
> */
> void intel_fb_obj_flush(struct drm_i915_gem_object *obj,
> - bool retire)
> + bool retire, enum fb_op_origin origin)
> {
> struct drm_device *dev = obj->base.dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> @@ -229,7 +234,7 @@ void intel_fb_obj_flush(struct drm_i915_gem_object *obj,
> mutex_unlock(&dev_priv->fb_tracking.lock);
> }
>
> - intel_frontbuffer_flush(dev, frontbuffer_bits);
> + intel_frontbuffer_flush(dev, frontbuffer_bits, origin);
> }
>
> /**
> @@ -277,5 +282,5 @@ void intel_frontbuffer_flip_complete(struct drm_device *dev,
> dev_priv->fb_tracking.flip_bits &= ~frontbuffer_bits;
> mutex_unlock(&dev_priv->fb_tracking.lock);
>
> - intel_frontbuffer_flush(dev, frontbuffer_bits);
> + intel_frontbuffer_flush(dev, frontbuffer_bits, ORIGIN_FLIP);
> }
> --
> 2.1.4
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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