[Intel-gfx] [RFC PATCH 11/20] drm/i915: Remove gem and overlay frontbuffer tracking

[Matthew Brost <matthew.brost@intel.com>]

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Frontbuffer update handling should be done explicitly by using dirtyfb
calls only.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 drivers/gpu/drm/i915/display/i9xx_plane.c     |  1 +
 drivers/gpu/drm/i915/display/intel_drrs.c     |  1 +
 drivers/gpu/drm/i915/display/intel_fb.c       |  1 +
 drivers/gpu/drm/i915/display/intel_overlay.c  | 14 -----------
 .../drm/i915/display/intel_plane_initial.c    |  1 +
 drivers/gpu/drm/i915/display/intel_psr.c      |  1 +
 .../drm/i915/display/skl_universal_plane.c    |  1 +
 drivers/gpu/drm/i915/gem/i915_gem_clflush.c   |  4 ---
 drivers/gpu/drm/i915/gem/i915_gem_domain.c    |  7 ------
 .../gpu/drm/i915/gem/i915_gem_execbuffer.c    |  2 --
 drivers/gpu/drm/i915/gem/i915_gem_object.c    | 25 -------------------
 drivers/gpu/drm/i915/gem/i915_gem_object.h    | 22 ----------------
 drivers/gpu/drm/i915/gem/i915_gem_phys.c      |  4 ---
 drivers/gpu/drm/i915/i915_driver.c            |  1 +
 drivers/gpu/drm/i915/i915_gem.c               |  8 ------
 drivers/gpu/drm/i915/i915_gem_gtt.c           |  1 -
 drivers/gpu/drm/i915/i915_vma.c               | 12 ---------
 17 files changed, 7 insertions(+), 99 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
index ecaeb7dc196b..633e462d96a0 100644
--- a/drivers/gpu/drm/i915/display/i9xx_plane.c
+++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
@@ -17,6 +17,7 @@
 #include "intel_display_types.h"
 #include "intel_fb.h"
 #include "intel_fbc.h"
+#include "intel_frontbuffer.h"
 #include "intel_sprite.h"
 
 /* Primary plane formats for gen <= 3 */
diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c
index 5b9e44443814..3503d112387d 100644
--- a/drivers/gpu/drm/i915/display/intel_drrs.c
+++ b/drivers/gpu/drm/i915/display/intel_drrs.c
@@ -9,6 +9,7 @@
 #include "intel_de.h"
 #include "intel_display_types.h"
 #include "intel_drrs.h"
+#include "intel_frontbuffer.h"
 #include "intel_panel.h"
 
 /**
diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index 63137ae5ab21..7cf31c87884c 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -12,6 +12,7 @@
 #include "intel_display_types.h"
 #include "intel_dpt.h"
 #include "intel_fb.h"
+#include "intel_frontbuffer.h"
 
 #define check_array_bounds(i915, a, i) drm_WARN_ON(&(i915)->drm, (i) >= ARRAY_SIZE(a))
 
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index c12bdca8da9b..5b86563ce577 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -186,7 +186,6 @@ struct intel_overlay {
 	struct intel_crtc *crtc;
 	struct i915_vma *vma;
 	struct i915_vma *old_vma;
-	struct intel_frontbuffer *frontbuffer;
 	bool active;
 	bool pfit_active;
 	u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
@@ -287,20 +286,9 @@ static void intel_overlay_flip_prepare(struct intel_overlay *overlay,
 				       struct i915_vma *vma)
 {
 	enum pipe pipe = overlay->crtc->pipe;
-	struct intel_frontbuffer *frontbuffer = NULL;
 
 	drm_WARN_ON(&overlay->i915->drm, overlay->old_vma);
 
-	if (vma)
-		frontbuffer = intel_frontbuffer_get(vma->obj);
-
-	intel_frontbuffer_track(overlay->frontbuffer, frontbuffer,
-				INTEL_FRONTBUFFER_OVERLAY(pipe));
-
-	if (overlay->frontbuffer)
-		intel_frontbuffer_put(overlay->frontbuffer);
-	overlay->frontbuffer = frontbuffer;
-
 	intel_frontbuffer_flip_prepare(overlay->i915,
 				       INTEL_FRONTBUFFER_OVERLAY(pipe));
 
@@ -810,8 +798,6 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
 		goto out_pin_section;
 	}
 
-	i915_gem_object_flush_frontbuffer(new_bo, ORIGIN_DIRTYFB);
-
 	if (!overlay->active) {
 		const struct intel_crtc_state *crtc_state =
 			overlay->crtc->config;
diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.c b/drivers/gpu/drm/i915/display/intel_plane_initial.c
index 76be796df255..cad9c8884af3 100644
--- a/drivers/gpu/drm/i915/display/intel_plane_initial.c
+++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c
@@ -9,6 +9,7 @@
 #include "intel_display.h"
 #include "intel_display_types.h"
 #include "intel_fb.h"
+#include "intel_frontbuffer.h"
 #include "intel_plane_initial.h"
 
 static bool
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 9820e5fdd087..bc998b526d88 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -33,6 +33,7 @@
 #include "intel_de.h"
 #include "intel_display_types.h"
 #include "intel_dp_aux.h"
+#include "intel_frontbuffer.h"
 #include "intel_hdmi.h"
 #include "intel_psr.h"
 #include "intel_snps_phy.h"
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 4b79c2d2d617..2f5524f380b0 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -16,6 +16,7 @@
 #include "intel_display_types.h"
 #include "intel_fb.h"
 #include "intel_fbc.h"
+#include "intel_frontbuffer.h"
 #include "intel_psr.h"
 #include "intel_sprite.h"
 #include "skl_scaler.h"
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_clflush.c b/drivers/gpu/drm/i915/gem/i915_gem_clflush.c
index b3b398fe689c..df2db78b10ca 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_clflush.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_clflush.c
@@ -6,8 +6,6 @@
 
 #include <drm/drm_cache.h>
 
-#include "display/intel_frontbuffer.h"
-
 #include "i915_drv.h"
 #include "i915_gem_clflush.h"
 #include "i915_sw_fence_work.h"
@@ -22,8 +20,6 @@ static void __do_clflush(struct drm_i915_gem_object *obj)
 {
 	GEM_BUG_ON(!i915_gem_object_has_pages(obj));
 	drm_clflush_sg(obj->mm.pages);
-
-	i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
 }
 
 static void clflush_work(struct dma_fence_work *base)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_domain.c b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
index 9969e687ad85..cd5505da4884 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_domain.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
@@ -4,7 +4,6 @@
  * Copyright © 2014-2016 Intel Corporation
  */
 
-#include "display/intel_frontbuffer.h"
 #include "gt/intel_gt.h"
 
 #include "i915_drv.h"
@@ -65,8 +64,6 @@ flush_write_domain(struct drm_i915_gem_object *obj, unsigned int flush_domains)
 				intel_gt_flush_ggtt_writes(vma->vm->gt);
 		}
 		spin_unlock(&obj->vma.lock);
-
-		i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
 		break;
 
 	case I915_GEM_DOMAIN_WC:
@@ -629,9 +626,6 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 out_unlock:
 	i915_gem_object_unlock(obj);
 
-	if (!err && write_domain)
-		i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
-
 out:
 	i915_gem_object_put(obj);
 	return err;
@@ -742,7 +736,6 @@ int i915_gem_object_prepare_write(struct drm_i915_gem_object *obj,
 	}
 
 out:
-	i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
 	obj->mm.dirty = true;
 	/* return with the pages pinned */
 	return 0;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index f98600ca7557..08f84d4f4f92 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -11,8 +11,6 @@
 
 #include <drm/drm_syncobj.h>
 
-#include "display/intel_frontbuffer.h"
-
 #include "gem/i915_gem_ioctls.h"
 #include "gt/intel_context.h"
 #include "gt/intel_gpu_commands.h"
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 1a0886b8aaa1..d2fef38cd12e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -27,7 +27,6 @@
 
 #include <drm/drm_cache.h>
 
-#include "display/intel_frontbuffer.h"
 #include "pxp/intel_pxp.h"
 
 #include "i915_drv.h"
@@ -400,30 +399,6 @@ static void i915_gem_free_object(struct drm_gem_object *gem_obj)
 		queue_work(i915->wq, &i915->mm.free_work);
 }
 
-void __i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
-					 enum fb_op_origin origin)
-{
-	struct intel_frontbuffer *front;
-
-	front = __intel_frontbuffer_get(obj);
-	if (front) {
-		intel_frontbuffer_flush(front, origin);
-		intel_frontbuffer_put(front);
-	}
-}
-
-void __i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
-					      enum fb_op_origin origin)
-{
-	struct intel_frontbuffer *front;
-
-	front = __intel_frontbuffer_get(obj);
-	if (front) {
-		intel_frontbuffer_invalidate(front, origin);
-		intel_frontbuffer_put(front);
-	}
-}
-
 static void
 i915_gem_object_read_from_page_kmap(struct drm_i915_gem_object *obj, u64 offset, void *dst, int size)
 {
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index 3db53769864c..90dba761889c 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -11,7 +11,6 @@
 #include <drm/drm_file.h>
 #include <drm/drm_device.h>
 
-#include "display/intel_frontbuffer.h"
 #include "intel_memory_region.h"
 #include "i915_gem_object_types.h"
 #include "i915_gem_gtt.h"
@@ -573,27 +572,6 @@ int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
 				  unsigned int flags,
 				  const struct i915_sched_attr *attr);
 
-void __i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
-					 enum fb_op_origin origin);
-void __i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
-					      enum fb_op_origin origin);
-
-static inline void
-i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
-				  enum fb_op_origin origin)
-{
-	if (unlikely(rcu_access_pointer(obj->frontbuffer)))
-		__i915_gem_object_flush_frontbuffer(obj, origin);
-}
-
-static inline void
-i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
-				       enum fb_op_origin origin)
-{
-	if (unlikely(rcu_access_pointer(obj->frontbuffer)))
-		__i915_gem_object_invalidate_frontbuffer(obj, origin);
-}
-
 int i915_gem_object_read_from_page(struct drm_i915_gem_object *obj, u64 offset, void *dst, int size);
 
 bool i915_gem_object_is_shmem(const struct drm_i915_gem_object *obj);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_phys.c b/drivers/gpu/drm/i915/gem/i915_gem_phys.c
index 68453572275b..4cf57676e180 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_phys.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_phys.c
@@ -156,15 +156,11 @@ int i915_gem_object_pwrite_phys(struct drm_i915_gem_object *obj,
 	 * We manually control the domain here and pretend that it
 	 * remains coherent i.e. in the GTT domain, like shmem_pwrite.
 	 */
-	i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
-
 	if (copy_from_user(vaddr, user_data, args->size))
 		return -EFAULT;
 
 	drm_clflush_virt_range(vaddr, args->size);
 	intel_gt_chipset_flush(to_gt(i915));
-
-	i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index c1e427ba57ae..f4201f9c5f84 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -346,6 +346,7 @@ static int i915_driver_early_probe(struct drm_i915_private *dev_priv)
 
 	spin_lock_init(&dev_priv->irq_lock);
 	spin_lock_init(&dev_priv->gpu_error.lock);
+	spin_lock_init(&dev_priv->display.fb_tracking.lock);
 	mutex_init(&dev_priv->display.backlight.lock);
 
 	mutex_init(&dev_priv->sb_lock);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 969581e7106f..594891291735 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -40,7 +40,6 @@
 #include <drm/drm_vma_manager.h>
 
 #include "display/intel_display.h"
-#include "display/intel_frontbuffer.h"
 
 #include "gem/i915_gem_clflush.h"
 #include "gem/i915_gem_context.h"
@@ -569,8 +568,6 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
 		goto out_rpm;
 	}
 
-	i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
-
 	user_data = u64_to_user_ptr(args->data_ptr);
 	offset = args->offset;
 	remain = args->size;
@@ -613,7 +610,6 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
 	}
 
 	intel_gt_flush_ggtt_writes(ggtt->vm.gt);
-	i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
 
 	i915_gem_gtt_cleanup(obj, &node, vma);
 out_rpm:
@@ -700,8 +696,6 @@ i915_gem_shmem_pwrite(struct drm_i915_gem_object *obj,
 		offset = 0;
 	}
 
-	i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
-
 	i915_gem_object_unpin_pages(obj);
 	return ret;
 
@@ -1272,8 +1266,6 @@ void i915_gem_init_early(struct drm_i915_private *dev_priv)
 {
 	i915_gem_init__mm(dev_priv);
 	i915_gem_init__contexts(dev_priv);
-
-	spin_lock_init(&dev_priv->display.fb_tracking.lock);
 }
 
 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 7bd1861ddbdf..a9662cc6ed1e 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -15,7 +15,6 @@
 #include <asm/set_memory.h>
 #include <asm/smp.h>
 
-#include "display/intel_frontbuffer.h"
 #include "gt/intel_gt.h"
 #include "gt/intel_gt_requests.h"
 
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 7d044888ac33..e3b73175805b 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -26,7 +26,6 @@
 #include <linux/dma-fence-array.h>
 #include <drm/drm_gem.h>
 
-#include "display/intel_frontbuffer.h"
 #include "gem/i915_gem_lmem.h"
 #include "gem/i915_gem_tiling.h"
 #include "gt/intel_engine.h"
@@ -1901,17 +1900,6 @@ int _i915_vma_move_to_active(struct i915_vma *vma,
 			return err;
 	}
 
-	if (flags & EXEC_OBJECT_WRITE) {
-		struct intel_frontbuffer *front;
-
-		front = __intel_frontbuffer_get(obj);
-		if (unlikely(front)) {
-			if (intel_frontbuffer_invalidate(front, ORIGIN_CS))
-				i915_active_add_request(&front->write, rq);
-			intel_frontbuffer_put(front);
-		}
-	}
-
 	if (fence) {
 		struct dma_fence *curr;
 		enum dma_resv_usage usage;
-- 
2.37.3