Re: [PATCH v8 13/16] drm/i915/gt: Use to_gt() helper for GGTT accesses

["Sundaresan, Sujaritha" <sujaritha.sundaresan@xxxxxxxxx>]

On 12/14/2021 11:33 AM, Andi Shyti wrote:
> From: Michał Winiarski <michal.winiarski@xxxxxxxxx>
>
> GGTT is currently available both through i915->ggtt and gt->ggtt, and we
> eventually want to get rid of the i915->ggtt one.
> Use to_gt() for all i915->ggtt accesses to help with the future
> refactoring.
>
> Signed-off-by: Michał Winiarski <michal.winiarski@xxxxxxxxx>
> Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
> Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
> ---
>   drivers/gpu/drm/i915/gt/intel_ggtt.c         | 14 +++++++-------
>   drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c |  6 +++---
>   drivers/gpu/drm/i915/gt/intel_region_lmem.c  |  4 ++--
>   drivers/gpu/drm/i915/gt/selftest_reset.c     |  2 +-
>   4 files changed, 13 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
> index 971e737b37b2..ec3b998392ff 100644
> --- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
> +++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
> @@ -89,7 +89,7 @@ int i915_ggtt_init_hw(struct drm_i915_private *i915)
>   	 * beyond the end of the batch buffer, across the page boundary,
>   	 * and beyond the end of the GTT if we do not provide a guard.
>   	 */
> -	ret = ggtt_init_hw(&i915->ggtt);
> +	ret = ggtt_init_hw(to_gt(i915)->ggtt);
>   	if (ret)
>   		return ret;
>   
> @@ -725,14 +725,14 @@ int i915_init_ggtt(struct drm_i915_private *i915)
>   {
>   	int ret;
>   
> -	ret = init_ggtt(&i915->ggtt);
> +	ret = init_ggtt(to_gt(i915)->ggtt);
>   	if (ret)
>   		return ret;
>   
>   	if (INTEL_PPGTT(i915) == INTEL_PPGTT_ALIASING) {
> -		ret = init_aliasing_ppgtt(&i915->ggtt);
> +		ret = init_aliasing_ppgtt(to_gt(i915)->ggtt);
>   		if (ret)
> -			cleanup_init_ggtt(&i915->ggtt);
> +			cleanup_init_ggtt(to_gt(i915)->ggtt);
>   	}
>   
>   	return 0;
> @@ -775,7 +775,7 @@ static void ggtt_cleanup_hw(struct i915_ggtt *ggtt)
>    */
>   void i915_ggtt_driver_release(struct drm_i915_private *i915)
>   {
> -	struct i915_ggtt *ggtt = &i915->ggtt;
> +	struct i915_ggtt *ggtt = to_gt(i915)->ggtt;
>   
>   	fini_aliasing_ppgtt(ggtt);
>   
> @@ -790,7 +790,7 @@ void i915_ggtt_driver_release(struct drm_i915_private *i915)
>    */
>   void i915_ggtt_driver_late_release(struct drm_i915_private *i915)
>   {
> -	struct i915_ggtt *ggtt = &i915->ggtt;
> +	struct i915_ggtt *ggtt = to_gt(i915)->ggtt;
>   
>   	GEM_WARN_ON(kref_read(&ggtt->vm.resv_ref) != 1);
>   	dma_resv_fini(&ggtt->vm._resv);
> @@ -1232,7 +1232,7 @@ int i915_ggtt_probe_hw(struct drm_i915_private *i915)
>   {
>   	int ret;
>   
> -	ret = ggtt_probe_hw(&i915->ggtt, to_gt(i915));
> +	ret = ggtt_probe_hw(to_gt(i915)->ggtt, to_gt(i915));
>   	if (ret)
>   		return ret;
>   
> diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
> index f8948de72036..beabf3bc9b75 100644
> --- a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
> +++ b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
> @@ -728,8 +728,8 @@ static void detect_bit_6_swizzle(struct i915_ggtt *ggtt)
>   		swizzle_y = I915_BIT_6_SWIZZLE_NONE;
>   	}
>   
> -	i915->ggtt.bit_6_swizzle_x = swizzle_x;
> -	i915->ggtt.bit_6_swizzle_y = swizzle_y;
> +	to_gt(i915)->ggtt->bit_6_swizzle_x = swizzle_x;
> +	to_gt(i915)->ggtt->bit_6_swizzle_y = swizzle_y;
>   }
>   
>   /*
> @@ -896,7 +896,7 @@ void intel_gt_init_swizzling(struct intel_gt *gt)
>   	struct intel_uncore *uncore = gt->uncore;
>   
>   	if (GRAPHICS_VER(i915) < 5 ||
> -	    i915->ggtt.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_NONE)
> +	    to_gt(i915)->ggtt->bit_6_swizzle_x == I915_BIT_6_SWIZZLE_NONE)
>   		return;
>   
>   	intel_uncore_rmw(uncore, DISP_ARB_CTL, 0, DISP_TILE_SURFACE_SWIZZLING);
> diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
> index fde2dcb59809..21215a080088 100644
> --- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
> +++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
> @@ -15,7 +15,7 @@
>   static int init_fake_lmem_bar(struct intel_memory_region *mem)
>   {
>   	struct drm_i915_private *i915 = mem->i915;
> -	struct i915_ggtt *ggtt = &i915->ggtt;
> +	struct i915_ggtt *ggtt = to_gt(i915)->ggtt;
>   	unsigned long n;
>   	int ret;
>   
> @@ -131,7 +131,7 @@ intel_gt_setup_fake_lmem(struct intel_gt *gt)
>   	if (!i915->params.fake_lmem_start)
>   		return ERR_PTR(-ENODEV);
>   
> -	GEM_BUG_ON(i915_ggtt_has_aperture(&i915->ggtt));
> +	GEM_BUG_ON(i915_ggtt_has_aperture(to_gt(i915)->ggtt));
>   
>   	/* Your mappable aperture belongs to me now! */
>   	mappable_end = pci_resource_len(pdev, 2);
> diff --git a/drivers/gpu/drm/i915/gt/selftest_reset.c b/drivers/gpu/drm/i915/gt/selftest_reset.c
> index 8a873f6bda7f..37c38bdd5f47 100644
> --- a/drivers/gpu/drm/i915/gt/selftest_reset.c
> +++ b/drivers/gpu/drm/i915/gt/selftest_reset.c
> @@ -19,7 +19,7 @@ __igt_reset_stolen(struct intel_gt *gt,
>   		   intel_engine_mask_t mask,
>   		   const char *msg)
>   {
> -	struct i915_ggtt *ggtt = &gt->i915->ggtt;
> +	struct i915_ggtt *ggtt = gt->ggtt;
>   	const struct resource *dsm = &gt->i915->dsm;
>   	resource_size_t num_pages, page;
>   	struct intel_engine_cs *engine;
Reviewed-by : Sujaritha Sundaresan <sujaritha.sundaresan@xxxxxxxxx>