From c34c9ee4828f251a4f4200211d40d3cb79761ef0 Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Tue, 23 Dec 2014 10:41:50 -0800 Subject: [PATCH] drm/i915: Move vblank evasion to commit (v4) Move the vblank evasion up from the low-level, hw-specific update_plane() handlers to the general plane commit operation. Everything inside commit should now be non-sleeping, so this brings us closer to how vblank evasion will behave once we move over to atomic. v2: - Restore lost intel_crtc->active check on vblank evasion v3: - Replace assert_pipe_enabled() in intel_disable_primary_hw_plane() with an intel_crtc->active test; it turns out assert_pipe_enabled() grabs some mutexes and can sleep, which we can't do with interrupts disabled. v4: - Equivalent to v2; v3 change is now squashed into an earlier patch of the series. (Ander). Signed-off-by: Matt Roper Reviewed-by: Ander Conselvan de Oliveira Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 10 +++++++ drivers/gpu/drm/i915/intel_drv.h | 4 +++ drivers/gpu/drm/i915/intel_sprite.c | 42 ---------------------------- 3 files changed, 14 insertions(+), 42 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 260b91c4cbbf..b7c59d56c3a6 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -11864,6 +11864,12 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc) intel_update_watermarks(crtc); intel_runtime_pm_get(dev_priv); + + /* Perform vblank evasion around commit operation */ + if (intel_crtc->active) + intel_crtc->atomic.evade = + intel_pipe_update_start(intel_crtc, + &intel_crtc->atomic.start_vbl_count); } static void intel_finish_crtc_commit(struct drm_crtc *crtc) @@ -11873,6 +11879,10 @@ static void intel_finish_crtc_commit(struct drm_crtc *crtc) struct intel_crtc *intel_crtc = to_intel_crtc(crtc); struct drm_plane *p; + if (intel_crtc->atomic.evade) + intel_pipe_update_end(intel_crtc, + intel_crtc->atomic.start_vbl_count); + intel_runtime_pm_put(dev_priv); if (intel_crtc->atomic.wait_vblank) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index d70bcc4bfcb7..8051468a3f7e 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -428,6 +428,10 @@ struct skl_pipe_wm { * and thus can't be run with interrupts disabled. */ struct intel_crtc_atomic_commit { + /* vblank evasion */ + bool evade; + unsigned start_vbl_count; + /* Sleepable operations to perform before commit */ bool wait_for_flips; bool disable_fbc; diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c index 3e6e95fe46ae..1dfdccbb9ab2 100644 --- a/drivers/gpu/drm/i915/intel_sprite.c +++ b/drivers/gpu/drm/i915/intel_sprite.c @@ -412,8 +412,6 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc, u32 sprctl; unsigned long sprsurf_offset, linear_offset; int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0); - u32 start_vbl_count; - bool atomic_update; sprctl = I915_READ(SPCNTR(pipe, plane)); @@ -502,8 +500,6 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc, linear_offset += src_h * fb->pitches[0] + src_w * pixel_size; } - atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count); - intel_update_primary_plane(intel_crtc); if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) @@ -525,9 +521,6 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc, sprsurf_offset); intel_flush_primary_plane(dev_priv, intel_crtc->plane); - - if (atomic_update) - intel_pipe_update_end(intel_crtc, start_vbl_count); } static void @@ -539,10 +532,6 @@ vlv_disable_plane(struct drm_plane *dplane, struct drm_crtc *crtc) struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int pipe = intel_plane->pipe; int plane = intel_plane->plane; - u32 start_vbl_count; - bool atomic_update; - - atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count); intel_update_primary_plane(intel_crtc); @@ -553,9 +542,6 @@ vlv_disable_plane(struct drm_plane *dplane, struct drm_crtc *crtc) intel_flush_primary_plane(dev_priv, intel_crtc->plane); - if (atomic_update) - intel_pipe_update_end(intel_crtc, start_vbl_count); - intel_update_sprite_watermarks(dplane, crtc, 0, 0, 0, false, false); } @@ -626,8 +612,6 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, u32 sprctl, sprscale = 0; unsigned long sprsurf_offset, linear_offset; int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0); - u32 start_vbl_count; - bool atomic_update; sprctl = I915_READ(SPRCTL(pipe)); @@ -711,8 +695,6 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, } } - atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count); - intel_update_primary_plane(intel_crtc); I915_WRITE(SPRSTRIDE(pipe), fb->pitches[0]); @@ -735,9 +717,6 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, i915_gem_obj_ggtt_offset(obj) + sprsurf_offset); intel_flush_primary_plane(dev_priv, intel_crtc->plane); - - if (atomic_update) - intel_pipe_update_end(intel_crtc, start_vbl_count); } static void @@ -748,10 +727,6 @@ ivb_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc) struct intel_plane *intel_plane = to_intel_plane(plane); struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int pipe = intel_plane->pipe; - u32 start_vbl_count; - bool atomic_update; - - atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count); intel_update_primary_plane(intel_crtc); @@ -764,9 +739,6 @@ ivb_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc) intel_flush_primary_plane(dev_priv, intel_crtc->plane); - if (atomic_update) - intel_pipe_update_end(intel_crtc, start_vbl_count); - /* * Avoid underruns when disabling the sprite. * FIXME remove once watermark updates are done properly. @@ -845,8 +817,6 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, unsigned long dvssurf_offset, linear_offset; u32 dvscntr, dvsscale; int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0); - u32 start_vbl_count; - bool atomic_update; dvscntr = I915_READ(DVSCNTR(pipe)); @@ -921,8 +891,6 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, linear_offset += src_h * fb->pitches[0] + src_w * pixel_size; } - atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count); - intel_update_primary_plane(intel_crtc); I915_WRITE(DVSSTRIDE(pipe), fb->pitches[0]); @@ -940,9 +908,6 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, i915_gem_obj_ggtt_offset(obj) + dvssurf_offset); intel_flush_primary_plane(dev_priv, intel_crtc->plane); - - if (atomic_update) - intel_pipe_update_end(intel_crtc, start_vbl_count); } static void @@ -953,10 +918,6 @@ ilk_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc) struct intel_plane *intel_plane = to_intel_plane(plane); struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int pipe = intel_plane->pipe; - u32 start_vbl_count; - bool atomic_update; - - atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count); intel_update_primary_plane(intel_crtc); @@ -968,9 +929,6 @@ ilk_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc) intel_flush_primary_plane(dev_priv, intel_crtc->plane); - if (atomic_update) - intel_pipe_update_end(intel_crtc, start_vbl_count); - /* * Avoid underruns when disabling the sprite. * FIXME remove once watermark updates are done properly. -- 2.20.1