[Intel-xe] [PATCH] drm/i915/rps: split out display rps parts to a separate file

* [Intel-xe] [PATCH] drm/i915/rps: split out display rps parts to a separate file
@ 2023-03-21 16:04 Jani Nikula
  2023-03-21 16:07 ` Jani Nikula
                   ` (4 more replies)
  0 siblings, 5 replies; 13+ messages in thread
From: Jani Nikula @ 2023-03-21 16:04 UTC (permalink / raw)
  To: intel-xe
  Cc: jani.nikula, lucas.demarchi, Ville Syrjälä, rodrigo.vivi

Split out the RPS parts so they can be conditionally compiled out later.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230302164936.3034161-1-jani.nikula@intel.com
(cherry picked from commit 6dbbff25b39565c801c87379bc85933fb436518e)

---

Here's an example of an upstream i915 commit that can help clean up
cherry-pick as well as cleanup of the #ifdefs in one go, otherwise it
breaks bisect.
---
 drivers/gpu/drm/i915/Makefile                 |  1 +
 .../gpu/drm/i915/display/intel_atomic_plane.c | 85 ++-----------------
 .../gpu/drm/i915/display/intel_display_rps.c  | 81 ++++++++++++++++++
 .../gpu/drm/i915/display/intel_display_rps.h  | 34 ++++++++
 4 files changed, 123 insertions(+), 78 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/display/intel_display_rps.c
 create mode 100644 drivers/gpu/drm/i915/display/intel_display_rps.h

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index ae9259ab3261..f689132e1506 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -239,6 +239,7 @@ i915-y += \
 	display/intel_display_power.o \
 	display/intel_display_power_map.o \
 	display/intel_display_power_well.o \
+	display/intel_display_rps.o \
 	display/intel_dmc.o \
 	display/intel_dpio_phy.o \
 	display/intel_dpll.o \
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index 3d37f44ec835..e666a5c1fd91 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -34,13 +34,10 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_fourcc.h>
 
-#ifdef I915
-#include "gt/intel_rps.h"
-#endif
-
 #include "i915_config.h"
 #include "intel_atomic_plane.h"
 #include "intel_cdclk.h"
+#include "intel_display_rps.h"
 #include "intel_display_trace.h"
 #include "intel_display_types.h"
 #include "intel_fb.h"
@@ -951,66 +948,6 @@ int intel_atomic_plane_check_clipping(struct intel_plane_state *plane_state,
 	return 0;
 }
 
-#ifdef I915
-struct wait_rps_boost {
-	struct wait_queue_entry wait;
-
-	struct drm_crtc *crtc;
-	struct i915_request *request;
-};
-
-static int do_rps_boost(struct wait_queue_entry *_wait,
-			unsigned mode, int sync, void *key)
-{
-	struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
-	struct i915_request *rq = wait->request;
-
-	/*
-	 * If we missed the vblank, but the request is already running it
-	 * is reasonable to assume that it will complete before the next
-	 * vblank without our intervention, so leave RPS alone.
-	 */
-	if (!i915_request_started(rq))
-		intel_rps_boost(rq);
-	i915_request_put(rq);
-
-	drm_crtc_vblank_put(wait->crtc);
-
-	list_del(&wait->wait.entry);
-	kfree(wait);
-	return 1;
-}
-
-static void add_rps_boost_after_vblank(struct drm_crtc *crtc,
-				       struct dma_fence *fence)
-{
-	struct wait_rps_boost *wait;
-
-	if (!dma_fence_is_i915(fence))
-		return;
-
-	if (DISPLAY_VER(to_i915(crtc->dev)) < 6)
-		return;
-
-	if (drm_crtc_vblank_get(crtc))
-		return;
-
-	wait = kmalloc(sizeof(*wait), GFP_KERNEL);
-	if (!wait) {
-		drm_crtc_vblank_put(crtc);
-		return;
-	}
-
-	wait->request = to_request(dma_fence_get(fence));
-	wait->crtc = crtc;
-
-	wait->wait.func = do_rps_boost;
-	wait->wait.flags = 0;
-
-	add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
-}
-#endif
-
 /**
  * intel_prepare_plane_fb - Prepare fb for usage on plane
  * @_plane: drm plane to prepare for
@@ -1102,13 +1039,13 @@ intel_prepare_plane_fb(struct drm_plane *_plane,
 		dma_resv_iter_begin(&cursor, obj->base.resv,
 				    DMA_RESV_USAGE_WRITE);
 		dma_resv_for_each_fence_unlocked(&cursor, fence) {
-			add_rps_boost_after_vblank(new_plane_state->hw.crtc,
-						   fence);
+			intel_display_rps_boost_after_vblank(new_plane_state->hw.crtc,
+							     fence);
 		}
 		dma_resv_iter_end(&cursor);
 	} else {
-		add_rps_boost_after_vblank(new_plane_state->hw.crtc,
-					   new_plane_state->uapi.fence);
+		intel_display_rps_boost_after_vblank(new_plane_state->hw.crtc,
+						     new_plane_state->uapi.fence);
 	}
 
 	/*
@@ -1119,10 +1056,7 @@ intel_prepare_plane_fb(struct drm_plane *_plane,
 	 * that are not quite steady state without resorting to forcing
 	 * maximum clocks following a vblank miss (see do_rps_boost()).
 	 */
-	if (!state->rps_interactive) {
-		intel_rps_mark_interactive(&to_gt(dev_priv)->rps, true);
-		state->rps_interactive = true;
-	}
+	intel_display_rps_mark_interactive(dev_priv, state, true);
 
 	return 0;
 
@@ -1159,12 +1093,7 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
 	if (!obj)
 		return;
 
-#ifdef I915
-	if (state->rps_interactive) {
-		intel_rps_mark_interactive(&to_gt(dev_priv)->rps, false);
-		state->rps_interactive = false;
-	}
-#endif
+	intel_display_rps_mark_interactive(dev_priv, state, false);
 
 	/* Should only be called after a successful intel_prepare_plane_fb()! */
 	intel_plane_unpin_fb(old_plane_state);
diff --git a/drivers/gpu/drm/i915/display/intel_display_rps.c b/drivers/gpu/drm/i915/display/intel_display_rps.c
new file mode 100644
index 000000000000..918d0327169a
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_rps.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_vblank.h>
+
+#include "gt/intel_rps.h"
+#include "i915_drv.h"
+#include "intel_display_rps.h"
+#include "intel_display_types.h"
+
+struct wait_rps_boost {
+	struct wait_queue_entry wait;
+
+	struct drm_crtc *crtc;
+	struct i915_request *request;
+};
+
+static int do_rps_boost(struct wait_queue_entry *_wait,
+			unsigned mode, int sync, void *key)
+{
+	struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
+	struct i915_request *rq = wait->request;
+
+	/*
+	 * If we missed the vblank, but the request is already running it
+	 * is reasonable to assume that it will complete before the next
+	 * vblank without our intervention, so leave RPS alone.
+	 */
+	if (!i915_request_started(rq))
+		intel_rps_boost(rq);
+	i915_request_put(rq);
+
+	drm_crtc_vblank_put(wait->crtc);
+
+	list_del(&wait->wait.entry);
+	kfree(wait);
+	return 1;
+}
+
+void intel_display_rps_boost_after_vblank(struct drm_crtc *crtc,
+					  struct dma_fence *fence)
+{
+	struct wait_rps_boost *wait;
+
+	if (!dma_fence_is_i915(fence))
+		return;
+
+	if (DISPLAY_VER(to_i915(crtc->dev)) < 6)
+		return;
+
+	if (drm_crtc_vblank_get(crtc))
+		return;
+
+	wait = kmalloc(sizeof(*wait), GFP_KERNEL);
+	if (!wait) {
+		drm_crtc_vblank_put(crtc);
+		return;
+	}
+
+	wait->request = to_request(dma_fence_get(fence));
+	wait->crtc = crtc;
+
+	wait->wait.func = do_rps_boost;
+	wait->wait.flags = 0;
+
+	add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
+}
+
+void intel_display_rps_mark_interactive(struct drm_i915_private *i915,
+					struct intel_atomic_state *state,
+					bool interactive)
+{
+	if (state->rps_interactive == interactive)
+		return;
+
+	intel_rps_mark_interactive(&to_gt(i915)->rps, interactive);
+	state->rps_interactive = interactive;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display_rps.h b/drivers/gpu/drm/i915/display/intel_display_rps.h
new file mode 100644
index 000000000000..2cfb8a303b77
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_rps.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef __INTEL_DISPLAY_RPS_H__
+#define __INTEL_DISPLAY_RPS_H__
+
+#include <linux/types.h>
+
+struct dma_fence;
+struct drm_crtc;
+struct drm_i915_private;
+struct intel_atomic_state;
+
+#ifdef I915
+void intel_display_rps_boost_after_vblank(struct drm_crtc *crtc,
+					  struct dma_fence *fence);
+void intel_display_rps_mark_interactive(struct drm_i915_private *i915,
+					struct intel_atomic_state *state,
+					bool interactive);
+#else
+static inline void intel_display_rps_boost_after_vblank(struct drm_crtc *crtc,
+							struct dma_fence *fence)
+{
+}
+static inline void intel_display_rps_mark_interactive(struct drm_i915_private *i915,
+						      struct intel_atomic_state *state,
+						      bool interactive)
+{
+}
+#endif
+
+#endif /* __INTEL_DISPLAY_RPS_H__ */
-- 
2.39.2


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