[Intel-gfx] [PATCH 04/15] drm/i915: Clean up cursor junk from intel_crtc

Imre Deak imre.deak at intel.com
Thu May 4 19:42:07 UTC 2017


On Mon, Mar 27, 2017 at 09:55:35PM +0300, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> 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.

Yes, AFAICS in case it's not visible the cursor DDB and WM will be still
computed (to fixed minimum and 0 accordingly) and programmed. Maybe
historical left-over? The code comment about this is also stale then.

> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Reviewed-by: Imre Deak <imre.deak at intel.com>

> ---
>  drivers/gpu/drm/i915/i915_debugfs.c  | 48 +++++-----------------
>  drivers/gpu/drm/i915/intel_display.c | 80 +++++++++++++++---------------------
>  drivers/gpu/drm/i915/intel_drv.h     |  9 ++--
>  3 files changed, 48 insertions(+), 89 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 316bc47a8eea..b9410cb845f3 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -3040,36 +3040,6 @@ 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) {
> @@ -3191,9 +3161,7 @@ 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);
> @@ -3205,14 +3173,18 @@ 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 5e04f64a0f76..1d55fac397ad 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -9126,8 +9126,7 @@ static bool haswell_get_pipe_config(struct intel_crtc *crtc,
>  	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);
> @@ -9140,8 +9139,6 @@ 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)
> @@ -9176,12 +9173,10 @@ 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) {
> @@ -9192,32 +9187,32 @@ 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;
>  	}
>  }
>  
> @@ -9257,39 +9252,36 @@ 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;
>  
> @@ -9309,9 +9301,7 @@ 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);
> @@ -9319,9 +9309,9 @@ 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);
>  }
> @@ -11882,7 +11872,7 @@ 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];
>  
> @@ -13756,7 +13746,7 @@ 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
> @@ -13764,9 +13754,7 @@ 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 *
> @@ -13800,6 +13788,10 @@ 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,
> @@ -13907,10 +13899,6 @@ 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 a3de17f3058b..b3235de8263b 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -760,11 +760,6 @@ 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 */
> @@ -805,6 +800,10 @@ 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
> -- 
> 2.10.2
> 
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