Re: [RFC 20/31] drm/i915: Compartmentalize i915_gem_suspend/restore_gtt_mappings

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Fri, Jun 14, 2019 at 04:17:20PM +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> 
> Having made start to better code compartmentalization by introducing
> struct intel_gt, continue the theme elsewhere in code by making functions
> take parameters take what logically makes most sense for them instead of
> the global struct drm_i915_private.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> ---
>  drivers/gpu/drm/i915/i915_gem_gtt.c | 23 ++++++++++++++++-------
>  1 file changed, 16 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index 0bc75c963955..516ffc4a521a 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -2323,23 +2323,28 @@ static bool needs_idle_maps(struct drm_i915_private *dev_priv)
>  	return IS_GEN(dev_priv, 5) && IS_MOBILE(dev_priv) && intel_vtd_active();
>  }
>  
> -void i915_gem_suspend_gtt_mappings(struct drm_i915_private *dev_priv)
> +static void ggtt_suspend_mappings(struct i915_ggtt *ggtt)
>  {
> -	struct i915_ggtt *ggtt = &dev_priv->ggtt;
> +	struct drm_i915_private *i915 = ggtt->vm.i915;
>  
>  	/* Don't bother messing with faults pre GEN6 as we have little
>  	 * documentation supporting that it's a good idea.
>  	 */
> -	if (INTEL_GEN(dev_priv) < 6)
> +	if (INTEL_GEN(i915) < 6)
>  		return;
>  
> -	intel_gt_check_and_clear_faults(&dev_priv->gt);
> +	intel_gt_check_and_clear_faults(ggtt->vm.gt);
>  
>  	ggtt->vm.clear_range(&ggtt->vm, 0, ggtt->vm.total);
>  
>  	ggtt->invalidate(ggtt);
>  }
>  
> +void i915_gem_suspend_gtt_mappings(struct drm_i915_private *dev_priv)
> +{
> +	ggtt_suspend_mappings(&dev_priv->ggtt);
> +}
> +
>  int i915_gem_gtt_prepare_pages(struct drm_i915_gem_object *obj,
>  			       struct sg_table *pages)
>  {
> @@ -3674,12 +3679,11 @@ void i915_ggtt_disable_guc(struct drm_i915_private *i915)
>  	ggtt->invalidate(ggtt);
>  }
>  
> -void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
> +static void ggtt_restore_mappings(struct i915_ggtt *ggtt)
>  {
> -	struct i915_ggtt *ggtt = &dev_priv->ggtt;
>  	struct i915_vma *vma, *vn;
>  
> -	intel_gt_check_and_clear_faults(&dev_priv->gt);
> +	intel_gt_check_and_clear_faults(ggtt->vm.gt);
>  
>  	mutex_lock(&ggtt->vm.mutex);
>  
> @@ -3716,6 +3720,11 @@ void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
>  	ggtt->invalidate(ggtt);
>  
>  	mutex_unlock(&ggtt->vm.mutex);
> +}
> +
> +void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)

I'd say maybe more places to s/dev_priv/i915, but I'm actually in favor
of the big sed so:

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

> +{
> +	ggtt_restore_mappings(&dev_priv->ggtt);
>  
>  	if (INTEL_GEN(dev_priv) >= 8) {
>  		struct intel_ppat *ppat = &dev_priv->ppat;
> -- 
> 2.20.1
> 
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