[Intel-gfx] [PATCH 3/4] drm/i915: Add .get_hw_state() method for planes
Daniel Vetter
daniel at ffwll.ch
Thu Sep 10 09:07:34 PDT 2015
On Thu, Sep 10, 2015 at 06:59:09PM +0300, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Add a .get_hw_state() method for planes, returning true or false
> depending on whether the plane is enabled. Use it to populate the
> plane state 'visible' during state readout.
>
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Patrik Jakobsson <patrik.jakobsson at linux.intel.com>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Do we really need this? The plane readout is fairly limited and we don't
really care about recovering anything but the initial primary plane on
driver load. Anything else can just be nuked if it misfits ...
-Daniel
> ---
> drivers/gpu/drm/i915/intel_display.c | 67 ++++++++++++++++++++++++++++--------
> drivers/gpu/drm/i915/intel_drv.h | 1 +
> drivers/gpu/drm/i915/intel_sprite.c | 37 ++++++++++++++++++++
> 3 files changed, 91 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 3707212..5fed120 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -2841,6 +2841,13 @@ static void ironlake_update_primary_plane(struct drm_crtc *crtc,
> POSTING_READ(reg);
> }
>
> +static bool i9xx_primary_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(DSPSURF(plane->plane)) & DISPLAY_PLANE_ENABLE;
> +}
> +
> u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
> uint32_t pixel_format)
> {
> @@ -3104,6 +3111,13 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
> POSTING_READ(PLANE_SURF(pipe, 0));
> }
>
> +static bool skylake_primary_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(PLANE_CTL(plane->pipe, 0)) & PLANE_CTL_ENABLE;
> +}
> +
> /* Assume fb object is pinned & idle & fenced and just update base pointers */
> static int
> intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
> @@ -9862,6 +9876,13 @@ static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
> }
> }
>
> +static bool i845_cursor_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(_CURACNTR) & CURSOR_ENABLE;
> +}
> +
> static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
> {
> struct drm_device *dev = crtc->dev;
> @@ -9909,6 +9930,13 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
> intel_crtc->cursor_base = base;
> }
>
> +static bool i9xx_cursor_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(CURCNTR(plane->pipe)) & CURSOR_MODE;
> +}
> +
> /* 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,
> bool on)
> @@ -13518,12 +13546,17 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
> }
> primary->pipe = pipe;
> primary->plane = pipe;
> + if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
> + primary->plane = !pipe;
> primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
> primary->check_plane = intel_check_primary_plane;
> primary->commit_plane = intel_commit_primary_plane;
> primary->disable_plane = intel_disable_primary_plane;
> - if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
> - primary->plane = !pipe;
> +
> + if (INTEL_INFO(dev)->gen >= 9)
> + primary->get_hw_state = skylake_primary_get_hw_state;
> + else
> + primary->get_hw_state = i9xx_primary_get_hw_state;
>
> if (INTEL_INFO(dev)->gen >= 9) {
> intel_primary_formats = skl_primary_formats;
> @@ -13679,6 +13712,11 @@ static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
> cursor->commit_plane = intel_commit_cursor_plane;
> cursor->disable_plane = intel_disable_cursor_plane;
>
> + if (IS_845G(dev) || IS_I865G(dev))
> + cursor->get_hw_state = i845_cursor_get_hw_state;
> + else
> + cursor->get_hw_state = i9xx_cursor_get_hw_state;
> +
> drm_universal_plane_init(dev, &cursor->base, 0,
> &intel_plane_funcs,
> intel_cursor_formats,
> @@ -14886,7 +14924,11 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc)
>
> /* Disable everything but the primary plane */
> for_each_intel_plane_on_crtc(dev, crtc, plane) {
> - if (plane->base.type == DRM_PLANE_TYPE_PRIMARY)
> + struct intel_plane_state *state =
> + to_intel_plane_state(plane->base.state);
> +
> + if (plane->base.type == DRM_PLANE_TYPE_PRIMARY ||
> + !state->visible)
> continue;
>
> plane->disable_plane(&plane->base, &crtc->base);
> @@ -15053,21 +15095,18 @@ void i915_redisable_vga(struct drm_device *dev)
> i915_redisable_vga_power_on(dev);
> }
>
> -static bool primary_get_hw_state(struct intel_plane *plane)
> -{
> - struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> -
> - return I915_READ(DSPCNTR(plane->plane)) & DISPLAY_PLANE_ENABLE;
> -}
> -
> /* FIXME read out full plane state for all planes */
> static void readout_plane_state(struct intel_crtc *crtc)
> {
> - struct intel_plane_state *plane_state =
> - to_intel_plane_state(crtc->base.primary->state);
> + struct drm_device *dev = crtc->base.dev;
> + struct intel_plane *plane;
>
> - plane_state->visible =
> - primary_get_hw_state(to_intel_plane(crtc->base.primary));
> + for_each_intel_plane_on_crtc(dev, crtc, plane) {
> + struct intel_plane_state *state =
> + to_intel_plane_state(plane->base.state);
> +
> + state->visible = plane->get_hw_state(plane);
> + }
> }
>
> static void intel_modeset_readout_hw_state(struct drm_device *dev)
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 46484e4..64d6d90 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -628,6 +628,7 @@ struct intel_plane {
> struct intel_plane_state *state);
> void (*commit_plane)(struct drm_plane *plane,
> struct intel_plane_state *state);
> + bool (*get_hw_state)(struct intel_plane *plane);
> };
>
> struct intel_watermark_params {
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
> index ca7e264..8b2c744 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -290,6 +290,15 @@ skl_disable_plane(struct drm_plane *dplane, struct drm_crtc *crtc)
> intel_update_sprite_watermarks(dplane, crtc, 0, 0, 0, false, false);
> }
>
> +static bool
> +skl_plane_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(PLANE_CTL(plane->pipe,
> + plane->plane + 1)) & PLANE_CTL_ENABLE;
> +}
> +
> static void
> chv_update_csc(struct intel_plane *intel_plane, uint32_t format)
> {
> @@ -469,6 +478,14 @@ vlv_disable_plane(struct drm_plane *dplane, struct drm_crtc *crtc)
> POSTING_READ(SPSURF(pipe, plane));
> }
>
> +static bool
> +vlv_plane_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(SPCNTR(plane->pipe, plane->plane)) & SP_ENABLE;
> +}
> +
> static void
> ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> struct drm_framebuffer *fb,
> @@ -611,6 +628,14 @@ ivb_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
> POSTING_READ(SPRSURF(pipe));
> }
>
> +static bool
> +ivb_plane_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(SPRCTL(plane->pipe)) & SPRITE_ENABLE;
> +}
> +
> static void
> ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> struct drm_framebuffer *fb,
> @@ -739,6 +764,14 @@ ilk_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
> POSTING_READ(DVSSURF(pipe));
> }
>
> +static bool
> +ilk_plane_get_hw_state(struct intel_plane *plane)
> +{
> + struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +
> + return I915_READ(DVSCNTR(plane->pipe)) & DVS_ENABLE;
> +}
> +
> static int
> intel_check_sprite_plane(struct drm_plane *plane,
> struct intel_crtc_state *crtc_state,
> @@ -1075,6 +1108,7 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
> intel_plane->max_downscale = 16;
> intel_plane->update_plane = ilk_update_plane;
> intel_plane->disable_plane = ilk_disable_plane;
> + intel_plane->get_hw_state = ilk_plane_get_hw_state;
>
> if (IS_GEN6(dev)) {
> plane_formats = snb_plane_formats;
> @@ -1098,12 +1132,14 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
> if (IS_VALLEYVIEW(dev)) {
> intel_plane->update_plane = vlv_update_plane;
> intel_plane->disable_plane = vlv_disable_plane;
> + intel_plane->get_hw_state = vlv_plane_get_hw_state;
>
> plane_formats = vlv_plane_formats;
> num_plane_formats = ARRAY_SIZE(vlv_plane_formats);
> } else {
> intel_plane->update_plane = ivb_update_plane;
> intel_plane->disable_plane = ivb_disable_plane;
> + intel_plane->get_hw_state = ivb_plane_get_hw_state;
>
> plane_formats = snb_plane_formats;
> num_plane_formats = ARRAY_SIZE(snb_plane_formats);
> @@ -1113,6 +1149,7 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
> intel_plane->can_scale = true;
> intel_plane->update_plane = skl_update_plane;
> intel_plane->disable_plane = skl_disable_plane;
> + intel_plane->get_hw_state = skl_plane_get_hw_state;
> state->scaler_id = -1;
>
> plane_formats = skl_plane_formats;
> --
> 2.4.6
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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