drm/i915: Clean up cursor junk from intel_crtc

Move cursor_base, cursor_cntl, and cursor_size from intel_crtc
into intel_plane so that we don't need the crtc for cursor stuff
so much.

Also entirely nuke cursor_addr which IMO doesn't provide any benefit
since it's not actually used by the cursor code itself. I'm not 100%
sure what the SKL+ DDB is code is after by looking at cursor_addr so
I just make it do its checks unconditionally. If that's not correct
then we should likely replace it with somehting like
plane_state->visible.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170327185546.2977-5-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

3 files changed, 47 insertions, 89 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index b302c7b..7830337 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3042,36 +3042,6 @@ static void intel_connector_info(struct seq_file *m,
 		intel_seq_print_mode(m, 2, mode);
 }
 
-static bool cursor_active(struct drm_i915_private *dev_priv, int pipe)
-{
-	u32 state;
-
-	if (IS_I845G(dev_priv) || IS_I865G(dev_priv))
-		state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
-	else
-		state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
-
-	return state;
-}
-
-static bool cursor_position(struct drm_i915_private *dev_priv,
-			    int pipe, int *x, int *y)
-{
-	u32 pos;
-
-	pos = I915_READ(CURPOS(pipe));
-
-	*x = (pos >> CURSOR_X_SHIFT) & CURSOR_POS_MASK;
-	if (pos & (CURSOR_POS_SIGN << CURSOR_X_SHIFT))
-		*x = -*x;
-
-	*y = (pos >> CURSOR_Y_SHIFT) & CURSOR_POS_MASK;
-	if (pos & (CURSOR_POS_SIGN << CURSOR_Y_SHIFT))
-		*y = -*y;
-
-	return cursor_active(dev_priv, pipe);
-}
-
 static const char *plane_type(enum drm_plane_type type)
 {
 	switch (type) {
@@ -3193,9 +3163,7 @@ static int i915_display_info(struct seq_file *m, void *unused)
 	seq_printf(m, "CRTC info\n");
 	seq_printf(m, "---------\n");
 	for_each_intel_crtc(dev, crtc) {
-		bool active;
 		struct intel_crtc_state *pipe_config;
-		int x, y;
 
 		drm_modeset_lock(&crtc->base.mutex, NULL);
 		pipe_config = to_intel_crtc_state(crtc->base.state);
@@ -3207,14 +3175,18 @@ static int i915_display_info(struct seq_file *m, void *unused)
 			   yesno(pipe_config->dither), pipe_config->pipe_bpp);
 
 		if (pipe_config->base.active) {
+			struct intel_plane *cursor =
+				to_intel_plane(crtc->base.cursor);
+
 			intel_crtc_info(m, crtc);
 
-			active = cursor_position(dev_priv, crtc->pipe, &x, &y);
-			seq_printf(m, "\tcursor visible? %s, position (%d, %d), size %dx%d, addr 0x%08x, active? %s\n",
-				   yesno(crtc->cursor_base),
-				   x, y, crtc->base.cursor->state->crtc_w,
-				   crtc->base.cursor->state->crtc_h,
-				   crtc->cursor_addr, yesno(active));
+			seq_printf(m, "\tcursor visible? %s, position (%d, %d), size %dx%d, addr 0x%08x\n",
+				   yesno(cursor->base.state->visible),
+				   cursor->base.state->crtc_x,
+				   cursor->base.state->crtc_y,
+				   cursor->base.state->crtc_w,
+				   cursor->base.state->crtc_h,
+				   cursor->cursor.base);
 			intel_scaler_info(m, crtc);
 			intel_plane_info(m, crtc);
 		}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6e0a579..bbc2022 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9135,8 +9135,7 @@ out:
 	return active;
 }
 
-static u32 intel_cursor_base(struct intel_crtc *crtc,
-			     const struct intel_plane_state *plane_state)
+static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
 {
 	struct drm_i915_private *dev_priv =
 		to_i915(plane_state->base.plane->dev);
@@ -9149,8 +9148,6 @@ static u32 intel_cursor_base(struct intel_crtc *crtc,
 	else
 		base = intel_plane_ggtt_offset(plane_state);
 
-	crtc->cursor_addr = base;
-
 	/* ILK+ do this automagically */
 	if (HAS_GMCH_DISPLAY(dev_priv) &&
 	    plane_state->base.rotation & DRM_ROTATE_180)
@@ -9185,12 +9182,10 @@ static u32 i845_cursor_ctl(const struct intel_crtc_state *crtc_state,
 		CURSOR_STRIDE(stride);
 }
 
-static void i845_update_cursor(struct drm_crtc *crtc, u32 base,
+static void i845_update_cursor(struct intel_plane *plane, u32 base,
 			       const struct intel_plane_state *plane_state)
 {
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	uint32_t cntl = 0, size = 0;
 
 	if (plane_state && plane_state->base.visible) {
@@ -9201,32 +9196,32 @@ static void i845_update_cursor(struct drm_crtc *crtc, u32 base,
 		size = (height << 12) | width;
 	}
 
-	if (intel_crtc->cursor_cntl != 0 &&
-	    (intel_crtc->cursor_base != base ||
-	     intel_crtc->cursor_size != size ||
-	     intel_crtc->cursor_cntl != cntl)) {
+	if (plane->cursor.cntl != 0 &&
+	    (plane->cursor.base != base ||
+	     plane->cursor.size != size ||
+	     plane->cursor.cntl != cntl)) {
 		/* On these chipsets we can only modify the base/size/stride
 		 * whilst the cursor is disabled.
 		 */
 		I915_WRITE_FW(CURCNTR(PIPE_A), 0);
 		POSTING_READ_FW(CURCNTR(PIPE_A));
-		intel_crtc->cursor_cntl = 0;
+		plane->cursor.cntl = 0;
 	}
 
-	if (intel_crtc->cursor_base != base) {
+	if (plane->cursor.base != base) {
 		I915_WRITE_FW(CURBASE(PIPE_A), base);
-		intel_crtc->cursor_base = base;
+		plane->cursor.base = base;
 	}
 
-	if (intel_crtc->cursor_size != size) {
+	if (plane->cursor.size != size) {
 		I915_WRITE_FW(CURSIZE, size);
-		intel_crtc->cursor_size = size;
+		plane->cursor.size = size;
 	}
 
-	if (intel_crtc->cursor_cntl != cntl) {
+	if (plane->cursor.cntl != cntl) {
 		I915_WRITE_FW(CURCNTR(PIPE_A), cntl);
 		POSTING_READ_FW(CURCNTR(PIPE_A));
-		intel_crtc->cursor_cntl = cntl;
+		plane->cursor.cntl = cntl;
 	}
 }
 
@@ -9266,39 +9261,35 @@ static u32 i9xx_cursor_ctl(const struct intel_crtc_state *crtc_state,
 	return cntl;
 }
 
-static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base,
+static void i9xx_update_cursor(struct intel_plane *plane, u32 base,
 			       const struct intel_plane_state *plane_state)
 {
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
 	uint32_t cntl = 0;
 
 	if (plane_state && plane_state->base.visible)
 		cntl = plane_state->ctl;
 
-	if (intel_crtc->cursor_cntl != cntl) {
+	if (plane->cursor.cntl != cntl) {
 		I915_WRITE_FW(CURCNTR(pipe), cntl);
 		POSTING_READ_FW(CURCNTR(pipe));
-		intel_crtc->cursor_cntl = cntl;
+		plane->cursor.cntl = cntl;
 	}
 
 	/* and commit changes on next vblank */
 	I915_WRITE_FW(CURBASE(pipe), base);
 	POSTING_READ_FW(CURBASE(pipe));
 
-	intel_crtc->cursor_base = base;
+	plane->cursor.base = base;
 }
 
 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
-static void intel_crtc_update_cursor(struct drm_crtc *crtc,
+static void intel_crtc_update_cursor(struct intel_plane *plane,
 				     const struct intel_plane_state *plane_state)
 {
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
 	u32 pos = 0, base = 0;
 	unsigned long irqflags;
 
@@ -9318,9 +9309,7 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 		}
 		pos |= y << CURSOR_Y_SHIFT;
 
-		base = intel_cursor_base(intel_crtc, plane_state);
-	} else {
-		intel_crtc->cursor_addr = 0;
+		base = intel_cursor_base(plane_state);
 	}
 
 	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
@@ -9328,9 +9317,9 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 	I915_WRITE_FW(CURPOS(pipe), pos);
 
 	if (IS_I845G(dev_priv) || IS_I865G(dev_priv))
-		i845_update_cursor(crtc, base, plane_state);
+		i845_update_cursor(plane, base, plane_state);
 	else
-		i9xx_update_cursor(crtc, base, plane_state);
+		i9xx_update_cursor(plane, base, plane_state);
 
 	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
@@ -11892,7 +11881,7 @@ static void verify_wm_state(struct drm_crtc *crtc,
 	 * allocation. In that case since the ddb allocation will be updated
 	 * once the plane becomes visible, we can skip this check
 	 */
-	if (intel_crtc->cursor_addr) {
+	if (1) {
 		hw_plane_wm = &hw_wm.planes[PLANE_CURSOR];
 		sw_plane_wm = &sw_wm->planes[PLANE_CURSOR];
 
@@ -13734,7 +13723,7 @@ static void
 intel_disable_cursor_plane(struct intel_plane *plane,
 			   struct intel_crtc *crtc)
 {
-	intel_crtc_update_cursor(&crtc->base, NULL);
+	intel_crtc_update_cursor(plane, NULL);
 }
 
 static void
@@ -13742,9 +13731,7 @@ intel_update_cursor_plane(struct intel_plane *plane,
 			  const struct intel_crtc_state *crtc_state,
 			  const struct intel_plane_state *state)
 {
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
-
-	intel_crtc_update_cursor(&crtc->base, state);
+	intel_crtc_update_cursor(plane, state);
 }
 
 static struct intel_plane *
@@ -13778,6 +13765,10 @@ intel_cursor_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe)
 	cursor->update_plane = intel_update_cursor_plane;
 	cursor->disable_plane = intel_disable_cursor_plane;
 
+	cursor->cursor.base = ~0;
+	cursor->cursor.cntl = ~0;
+	cursor->cursor.size = ~0;
+
 	ret = drm_universal_plane_init(&dev_priv->drm, &cursor->base,
 				       0, &intel_cursor_plane_funcs,
 				       intel_cursor_formats,
@@ -13885,10 +13876,6 @@ static int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
 	intel_crtc->pipe = pipe;
 	intel_crtc->plane = primary->plane;
 
-	intel_crtc->cursor_base = ~0;
-	intel_crtc->cursor_cntl = ~0;
-	intel_crtc->cursor_size = ~0;
-
 	/* initialize shared scalers */
 	intel_crtc_init_scalers(intel_crtc, crtc_state);
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f922e04..cc13706 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -799,11 +799,6 @@ struct intel_crtc {
 	int adjusted_x;
 	int adjusted_y;
 
-	uint32_t cursor_addr;
-	uint32_t cursor_cntl;
-	uint32_t cursor_size;
-	uint32_t cursor_base;
-
 	struct intel_crtc_state *config;
 
 	/* global reset count when the last flip was submitted */
@@ -845,6 +840,10 @@ struct intel_plane {
 	int max_downscale;
 	uint32_t frontbuffer_bit;
 
+	struct {
+		u32 base, cntl, size;
+	} cursor;
+
 	/*
 	 * NOTE: Do not place new plane state fields here (e.g., when adding
 	 * new plane properties).  New runtime state should now be placed in