Re: [Intel-gfx] [PATCH 2/2] drm/i915: Rename gt to gt0

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Quoting Andi Shyti (2021-11-17 13:34:56)
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> index 089fb4658b216..0bbf8c0c42eac 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> @@ -817,7 +817,7 @@ intel_prepare_plane_fb(struct drm_plane *_plane,
>          * maximum clocks following a vblank miss (see do_rps_boost()).
>          */
>         if (!state->rps_interactive) {
> -               intel_rps_mark_interactive(&dev_priv->gt.rps, true);
> +               intel_rps_mark_interactive(&dev_priv->gt0.rps, true);

This should be across all gt, so probably wants a fresh interface that
takes i915 and does for_each_gt in a later patch. (Since we could be
rendering on a remote tile to present on a display.)

>                 state->rps_interactive = true;
>         }
>  
> @@ -851,7 +851,7 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
>                 return;
>  
>         if (state->rps_interactive) {
> -               intel_rps_mark_interactive(&dev_priv->gt.rps, false);
> +               intel_rps_mark_interactive(&dev_priv->gt0.rps, false);
>                 state->rps_interactive = false;
>         }
>  
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 0ceee8ac66717..d4fcd8f236476 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -838,7 +838,7 @@ __intel_display_resume(struct drm_device *dev,
>  static bool gpu_reset_clobbers_display(struct drm_i915_private *dev_priv)
>  {
>         return (INTEL_INFO(dev_priv)->gpu_reset_clobbers_display &&
> -               intel_has_gpu_reset(&dev_priv->gt));
> +               intel_has_gpu_reset(&dev_priv->gt0));

All these display consumers probably want to use
dev_priv->ggtt->vm.gt, since the scanout capable GGTT would seem to be
the defining feature.

to_scanout_gt(i915) ?

>  static bool pxp_is_borked(struct drm_i915_gem_object *obj)
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> index ebd775cb1661c..c62253d0af044 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> @@ -237,7 +237,7 @@ static int proto_context_set_persistence(struct drm_i915_private *i915,
>                  * colateral damage, and we should not pretend we can by
>                  * exposing the interface.
>                  */
> -               if (!intel_has_reset_engine(&i915->gt))
> +               if (!intel_has_reset_engine(&i915->gt0))
>                         return -ENODEV;

Prep for all gt. A lot of these need an all-gt interface so we don't
have for_each_gt spread all other the place.

> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> index ef22d4ed66ad6..69ad407eb15f3 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> @@ -166,7 +166,7 @@ static struct dma_fence *i915_ttm_accel_move(struct ttm_buffer_object *bo,
>         enum i915_cache_level src_level, dst_level;
>         int ret;
>  
> -       if (!i915->gt.migrate.context || intel_gt_is_wedged(&i915->gt))
> +       if (!i915->gt0.migrate.context || intel_gt_is_wedged(&i915->gt0))

This should already be looking at lmem->gt

> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c
> index 8f8bea08e734d..176ea5c7d422f 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_user.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c
> @@ -116,7 +116,7 @@ static void set_scheduler_caps(struct drm_i915_private *i915)
>                         disabled |= (I915_SCHEDULER_CAP_ENABLED |
>                                      I915_SCHEDULER_CAP_PRIORITY);
>  
> -               if (intel_uc_uses_guc_submission(&i915->gt.uc))
> +               if (intel_uc_uses_guc_submission(&i915->gt0.uc))

This shouldn't be looking at gt at all, but if it must, that information
must be coming via engine->gt. Kind of renders the mapping moot
currently.
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
> index 07ff7ba7b2b71..63089e671a242 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.c
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.c
> @@ -2302,7 +2302,7 @@ unsigned long i915_read_mch_val(void)
>                 return 0;
>  
>         with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
> -               struct intel_ips *ips = &i915->gt.rps.ips;
> +               struct intel_ips *ips = &i915->gt0.rps.ips;

Make mchdev_get() return the gt or rps, at the slight cost of making the
drm_dev_put() more complicated (but can be pushed into a mchdev_put for
symmetry).

> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index a9727447c0379..4bfedc04f5c70 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -936,7 +936,7 @@ hsw_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
>  static void
>  gen9_wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
>  {
> -       const struct sseu_dev_info *sseu = &i915->gt.info.sseu;
> +       const struct sseu_dev_info *sseu = &i915->gt0.info.sseu;

This feels like it should be pulling from uncore->gt, since the MCR is
across an uncore.

Overall though, rather than introduce bare &i915->gt0, how about pulling in
the patch for to_gt(i915)?
-Chris




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