Re: [PATCH 1/3] drm/i915: Amalgamate gen6_mm_switch() and vgpu_mm_switch()

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Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:

> These are identical, so let's just use the same vfunc.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/i915_gem_gtt.c | 29 +++++------------------------
>  1 file changed, 5 insertions(+), 24 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index 0bb18b88dc7a..fd249f5a82f0 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -1683,17 +1683,6 @@ static int hsw_mm_switch(struct i915_hw_ppgtt *ppgtt,
>  	return 0;
>  }
>  
> -static int vgpu_mm_switch(struct i915_hw_ppgtt *ppgtt,
> -			  struct drm_i915_gem_request *req)
> -{
> -	struct intel_engine_cs *engine = req->engine;
> -	struct drm_i915_private *dev_priv = to_i915(ppgtt->base.dev);
> -
> -	I915_WRITE(RING_PP_DIR_DCLV(engine), PP_DIR_DCLV_2G);
> -	I915_WRITE(RING_PP_DIR_BASE(engine), get_pd_offset(ppgtt));
> -	return 0;
> -}
> -
>  static int gen7_mm_switch(struct i915_hw_ppgtt *ppgtt,
>  			  struct drm_i915_gem_request *req)
>  {
> @@ -1731,15 +1720,10 @@ static int gen6_mm_switch(struct i915_hw_ppgtt *ppgtt,
>  			  struct drm_i915_gem_request *req)
>  {
>  	struct intel_engine_cs *engine = req->engine;
> -	struct drm_device *dev = ppgtt->base.dev;
> -	struct drm_i915_private *dev_priv = dev->dev_private;
> -
> +	struct drm_i915_private *dev_priv = req->i915;
>  
>  	I915_WRITE(RING_PP_DIR_DCLV(engine), PP_DIR_DCLV_2G);
>  	I915_WRITE(RING_PP_DIR_BASE(engine), get_pd_offset(ppgtt));
> -
> -	POSTING_READ(RING_PP_DIR_DCLV(engine));
> -
>  	return 0;
>  }
>  
> @@ -2074,18 +2058,15 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
>  	int ret;
>  
>  	ppgtt->base.pte_encode = ggtt->base.pte_encode;
> -	if (IS_GEN6(dev)) {
> +	if (intel_vgpu_active(dev_priv) || IS_GEN6(dev))
>  		ppgtt->switch_mm = gen6_mm_switch;
> -	} else if (IS_HASWELL(dev)) {
> +	else if (IS_HASWELL(dev))
>  		ppgtt->switch_mm = hsw_mm_switch;
> -	} else if (IS_GEN7(dev)) {
> +	else if (IS_GEN7(dev))
>  		ppgtt->switch_mm = gen7_mm_switch;
> -	} else
> +	else
>  		BUG();
>  
> -	if (intel_vgpu_active(dev_priv))
> -		ppgtt->switch_mm = vgpu_mm_switch;
> -
>  	ret = gen6_ppgtt_alloc(ppgtt);
>  	if (ret)
>  		return ret;
> -- 
> 2.8.1
>
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