[PATCH v10 1/6] drm/i915/gt: Use to_gt() helper for GGTT accesses

[Andi Shyti <andi.shyti@linux.intel.com>]

From: Michał Winiarski <michal.winiarski@intel.com>

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.

During the probe of i915 the early intiialization of the gt
(intel_gt_init_hw_early()) is moved prior to any access to the
ggtt. This because it's in that moment we assign the ggtt to the
gt and we want to do that before using it.

Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Sujaritha Sundaresan <sujaritha.sundaresan@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
---
Hi Matt,

just added a small paragraph in this commit log to highlight the
even erlier early initialization of the gt.

Andi

 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 +-
 drivers/gpu/drm/i915/i915_driver.c           |  4 ++--
 5 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index 5263dda7f8d5..ab6c4322dc08 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -86,7 +86,7 @@ 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;
 
@@ -722,14 +722,14 @@ 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;
@@ -772,7 +772,7 @@ 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);
 
@@ -787,7 +787,7 @@ 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);
@@ -1208,7 +1208,7 @@ 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;
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index 95174938b160..60f8cbf24de7 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -571,6 +571,8 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
 
 	i915_perf_init(dev_priv);
 
+	intel_gt_init_hw_early(to_gt(dev_priv), &dev_priv->ggtt);
+
 	ret = i915_ggtt_probe_hw(dev_priv);
 	if (ret)
 		goto err_perf;
@@ -587,8 +589,6 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
 	if (ret)
 		goto err_ggtt;
 
-	intel_gt_init_hw_early(to_gt(dev_priv), &dev_priv->ggtt);
-
 	ret = intel_gt_probe_lmem(to_gt(dev_priv));
 	if (ret)
 		goto err_mem_regions;
-- 
2.34.1