[v2,1/5] drm/i915: Track pinned vma in intel_plane_state

Submitted by Chris Wilson on Jan. 16, 2017, 3:21 p.m.

Details

Message ID 20170116152131.18089-1-chris@chris-wilson.co.uk
State New
Headers show
Series "Series without cover letter" ( rev: 1 ) in Intel GFX

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Commit Message

Chris Wilson Jan. 16, 2017, 3:21 p.m.
With atomic plane states we are able to track an allocation right from
preparation, during use and through to the final free after being
swapped out for a new plane. We can couple the VMA we pin for the
framebuffer (and its rotation) to this lifetime and avoid all the clumsy
lookups in between.

v2: Remove residual vma on plane cleanup (Chris)
v3: Add a description for the vma destruction in
    intel_plane_destroy_state (Maarten)

References: https://bugs.freedesktop.org/show_bug.cgi?id=98829
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h           |  16 +---
 drivers/gpu/drm/i915/intel_atomic_plane.c |  20 +++++
 drivers/gpu/drm/i915/intel_display.c      | 130 +++++++++++-------------------
 drivers/gpu/drm/i915/intel_drv.h          |   9 ++-
 drivers/gpu/drm/i915/intel_fbc.c          |  52 +++++-------
 drivers/gpu/drm/i915/intel_fbdev.c        |   4 +-
 drivers/gpu/drm/i915/intel_sprite.c       |   8 +-
 7 files changed, 104 insertions(+), 135 deletions(-)

Patch hide | download patch | download mbox

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 38509505424d..f84b633be13c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1070,6 +1070,8 @@  struct intel_fbc {
 	struct work_struct underrun_work;
 
 	struct intel_fbc_state_cache {
+		struct i915_vma *vma;
+
 		struct {
 			unsigned int mode_flags;
 			uint32_t hsw_bdw_pixel_rate;
@@ -1083,15 +1085,14 @@  struct intel_fbc {
 		} plane;
 
 		struct {
-			u64 ilk_ggtt_offset;
 			const struct drm_format_info *format;
 			unsigned int stride;
-			int fence_reg;
-			unsigned int tiling_mode;
 		} fb;
 	} state_cache;
 
 	struct intel_fbc_reg_params {
+		struct i915_vma *vma;
+
 		struct {
 			enum pipe pipe;
 			enum plane plane;
@@ -1099,10 +1100,8 @@  struct intel_fbc {
 		} crtc;
 
 		struct {
-			u64 ggtt_offset;
 			const struct drm_format_info *format;
 			unsigned int stride;
-			int fence_reg;
 		} fb;
 
 		int cfb_size;
@@ -3397,13 +3396,6 @@  i915_gem_object_to_ggtt(struct drm_i915_gem_object *obj,
 	return i915_gem_obj_to_vma(obj, &to_i915(obj->base.dev)->ggtt.base, view);
 }
 
-static inline unsigned long
-i915_gem_object_ggtt_offset(struct drm_i915_gem_object *o,
-			    const struct i915_ggtt_view *view)
-{
-	return i915_ggtt_offset(i915_gem_object_to_ggtt(o, view));
-}
-
 /* i915_gem_fence_reg.c */
 int __must_check i915_vma_get_fence(struct i915_vma *vma);
 int __must_check i915_vma_put_fence(struct i915_vma *vma);
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 4612ffd555a7..41fd94e62d3c 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -85,6 +85,8 @@  intel_plane_duplicate_state(struct drm_plane *plane)
 
 	__drm_atomic_helper_plane_duplicate_state(plane, state);
 
+	intel_state->vma = NULL;
+
 	return state;
 }
 
@@ -100,6 +102,24 @@  void
 intel_plane_destroy_state(struct drm_plane *plane,
 			  struct drm_plane_state *state)
 {
+	struct i915_vma *vma;
+
+	vma = fetch_and_zero(&to_intel_plane_state(state)->vma);
+
+	/*
+	 * FIXME: Normally intel_cleanup_plane_fb handles destruction of vma.
+	 * We currently don't clear all planes during driver unload, so we have
+	 * to be able to unpin vma here for now.
+	 *
+	 * Normally this can only happen during unload when kmscon is disabled
+	 * and userspace doesn't attempt to set a framebuffer at all.
+	 */
+	if (vma) {
+		mutex_lock(&plane->dev->struct_mutex);
+		intel_unpin_fb_vma(vma);
+		mutex_unlock(&plane->dev->struct_mutex);
+	}
+
 	drm_atomic_helper_plane_destroy_state(plane, state);
 }
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index f523256ef77c..a9ef9e5168d4 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2234,24 +2234,19 @@  intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, unsigned int rotation)
 			i915_vma_pin_fence(vma);
 	}
 
+	i915_vma_get(vma);
 err:
 	intel_runtime_pm_put(dev_priv);
 	return vma;
 }
 
-void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation)
+void intel_unpin_fb_vma(struct i915_vma *vma)
 {
-	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
-	struct i915_ggtt_view view;
-	struct i915_vma *vma;
-
-	WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
-
-	intel_fill_fb_ggtt_view(&view, fb, rotation);
-	vma = i915_gem_object_to_ggtt(obj, &view);
+	lockdep_assert_held(&vma->vm->i915->drm.struct_mutex);
 
 	i915_vma_unpin_fence(vma);
 	i915_gem_object_unpin_from_display_plane(vma);
+	i915_vma_put(vma);
 }
 
 static int intel_fb_pitch(const struct drm_framebuffer *fb, int plane,
@@ -2744,7 +2739,6 @@  intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
 	struct drm_device *dev = intel_crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_crtc *c;
-	struct intel_crtc *i;
 	struct drm_i915_gem_object *obj;
 	struct drm_plane *primary = intel_crtc->base.primary;
 	struct drm_plane_state *plane_state = primary->state;
@@ -2769,20 +2763,20 @@  intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
 	 * an fb with another CRTC instead
 	 */
 	for_each_crtc(dev, c) {
-		i = to_intel_crtc(c);
+		struct intel_plane_state *state;
 
 		if (c == &intel_crtc->base)
 			continue;
 
-		if (!i->active)
+		if (!to_intel_crtc(c)->active)
 			continue;
 
-		fb = c->primary->fb;
-		if (!fb)
+		state = to_intel_plane_state(c->primary->state);
+		if (!state->vma)
 			continue;
 
-		obj = intel_fb_obj(fb);
-		if (i915_gem_object_ggtt_offset(obj, NULL) == plane_config->base) {
+		if (i915_ggtt_offset(state->vma) == plane_config->base) {
+			fb = c->primary->fb;
 			drm_framebuffer_reference(fb);
 			goto valid_fb;
 		}
@@ -2803,6 +2797,19 @@  intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
 	return;
 
 valid_fb:
+	mutex_lock(&dev->struct_mutex);
+	intel_state->vma =
+		intel_pin_and_fence_fb_obj(fb, primary->state->rotation);
+	mutex_unlock(&dev->struct_mutex);
+	if (IS_ERR(intel_state->vma)) {
+		DRM_ERROR("failed to pin boot fb on pipe %d: %li\n",
+			  intel_crtc->pipe, PTR_ERR(intel_state->vma));
+
+		intel_state->vma = NULL;
+		drm_framebuffer_unreference(fb);
+		return;
+	}
+
 	plane_state->src_x = 0;
 	plane_state->src_y = 0;
 	plane_state->src_w = fb->width << 16;
@@ -3095,13 +3102,13 @@  static void i9xx_update_primary_plane(struct drm_plane *primary,
 	I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
 	if (INTEL_GEN(dev_priv) >= 4) {
 		I915_WRITE(DSPSURF(plane),
-			   intel_fb_gtt_offset(fb, rotation) +
+			   intel_plane_ggtt_offset(plane_state) +
 			   intel_crtc->dspaddr_offset);
 		I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
 		I915_WRITE(DSPLINOFF(plane), linear_offset);
 	} else {
 		I915_WRITE(DSPADDR(plane),
-			   intel_fb_gtt_offset(fb, rotation) +
+			   intel_plane_ggtt_offset(plane_state) +
 			   intel_crtc->dspaddr_offset);
 	}
 	POSTING_READ(reg);
@@ -3198,7 +3205,7 @@  static void ironlake_update_primary_plane(struct drm_plane *primary,
 
 	I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
 	I915_WRITE(DSPSURF(plane),
-		   intel_fb_gtt_offset(fb, rotation) +
+		   intel_plane_ggtt_offset(plane_state) +
 		   intel_crtc->dspaddr_offset);
 	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
 		I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
@@ -3221,23 +3228,6 @@  u32 intel_fb_stride_alignment(const struct drm_i915_private *dev_priv,
 	}
 }
 
-u32 intel_fb_gtt_offset(struct drm_framebuffer *fb,
-			unsigned int rotation)
-{
-	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
-	struct i915_ggtt_view view;
-	struct i915_vma *vma;
-
-	intel_fill_fb_ggtt_view(&view, fb, rotation);
-
-	vma = i915_gem_object_to_ggtt(obj, &view);
-	if (WARN(!vma, "ggtt vma for display object not found! (view=%u)\n",
-		 view.type))
-		return -1;
-
-	return i915_ggtt_offset(vma);
-}
-
 static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
 {
 	struct drm_device *dev = intel_crtc->base.dev;
@@ -3433,7 +3423,7 @@  static void skylake_update_primary_plane(struct drm_plane *plane,
 	}
 
 	I915_WRITE(PLANE_SURF(pipe, plane_id),
-		   intel_fb_gtt_offset(fb, rotation) + surf_addr);
+		   intel_plane_ggtt_offset(plane_state) + surf_addr);
 
 	POSTING_READ(PLANE_SURF(pipe, plane_id));
 }
@@ -11566,7 +11556,7 @@  static void intel_unpin_work_fn(struct work_struct *__work)
 		flush_work(&work->mmio_work);
 
 	mutex_lock(&dev->struct_mutex);
-	intel_unpin_fb_obj(work->old_fb, primary->state->rotation);
+	intel_unpin_fb_vma(work->old_vma);
 	i915_gem_object_put(work->pending_flip_obj);
 	mutex_unlock(&dev->struct_mutex);
 
@@ -12276,8 +12266,10 @@  static int intel_crtc_page_flip(struct drm_crtc *crtc,
 		goto cleanup_pending;
 	}
 
-	work->gtt_offset = intel_fb_gtt_offset(fb, primary->state->rotation);
-	work->gtt_offset += intel_crtc->dspaddr_offset;
+	work->old_vma = to_intel_plane_state(primary->state)->vma;
+	to_intel_plane_state(primary->state)->vma = vma;
+
+	work->gtt_offset = i915_ggtt_offset(vma) + intel_crtc->dspaddr_offset;
 	work->rotation = crtc->primary->state->rotation;
 
 	/*
@@ -12332,7 +12324,8 @@  static int intel_crtc_page_flip(struct drm_crtc *crtc,
 cleanup_request:
 	i915_add_request_no_flush(request);
 cleanup_unpin:
-	intel_unpin_fb_obj(fb, crtc->primary->state->rotation);
+	to_intel_plane_state(primary->state)->vma = work->old_vma;
+	intel_unpin_fb_vma(vma);
 cleanup_pending:
 	atomic_dec(&intel_crtc->unpin_work_count);
 unlock:
@@ -14833,6 +14826,8 @@  intel_prepare_plane_fb(struct drm_plane *plane,
 			DRM_DEBUG_KMS("failed to pin object\n");
 			return PTR_ERR(vma);
 		}
+
+		to_intel_plane_state(new_state)->vma = vma;
 	}
 
 	return 0;
@@ -14851,19 +14846,12 @@  void
 intel_cleanup_plane_fb(struct drm_plane *plane,
 		       struct drm_plane_state *old_state)
 {
-	struct drm_i915_private *dev_priv = to_i915(plane->dev);
-	struct intel_plane_state *old_intel_state;
-	struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb);
-	struct drm_i915_gem_object *obj = intel_fb_obj(plane->state->fb);
-
-	old_intel_state = to_intel_plane_state(old_state);
-
-	if (!obj && !old_obj)
-		return;
+	struct i915_vma *vma;
 
-	if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR ||
-	    !INTEL_INFO(dev_priv)->cursor_needs_physical))
-		intel_unpin_fb_obj(old_state->fb, old_state->rotation);
+	/* Should only called after a successful intel_prepare_plane_fb()! */
+	vma = fetch_and_zero(&to_intel_plane_state(old_state)->vma);
+	if (vma)
+		intel_unpin_fb_vma(vma);
 }
 
 int
@@ -15015,6 +15003,7 @@  intel_legacy_cursor_update(struct drm_plane *plane,
 	struct intel_plane *intel_plane = to_intel_plane(plane);
 	struct drm_framebuffer *old_fb;
 	struct drm_crtc_state *crtc_state = crtc->state;
+	struct i915_vma *old_vma;
 
 	/*
 	 * When crtc is inactive or there is a modeset pending,
@@ -15086,9 +15075,12 @@  intel_legacy_cursor_update(struct drm_plane *plane,
 			ret = PTR_ERR(vma);
 			goto out_unlock;
 		}
+
+		to_intel_plane_state(new_plane_state)->vma = vma;
 	}
 
 	old_fb = old_plane_state->fb;
+	old_vma = to_intel_plane_state(old_plane_state)->vma;
 
 	i915_gem_track_fb(intel_fb_obj(old_fb), intel_fb_obj(fb),
 			  intel_plane->frontbuffer_bit);
@@ -15098,6 +15090,7 @@  intel_legacy_cursor_update(struct drm_plane *plane,
 	*to_intel_plane_state(old_plane_state) = *to_intel_plane_state(new_plane_state);
 	new_plane_state->fence = NULL;
 	new_plane_state->fb = old_fb;
+	to_intel_plane_state(new_plane_state)->vma = old_vma;
 
 	intel_plane->update_plane(plane,
 				  to_intel_crtc_state(crtc->state),
@@ -15336,7 +15329,7 @@  intel_update_cursor_plane(struct drm_plane *plane,
 	if (!obj)
 		addr = 0;
 	else if (!INTEL_INFO(dev_priv)->cursor_needs_physical)
-		addr = i915_gem_object_ggtt_offset(obj, NULL);
+		addr = i915_ggtt_offset(state->vma);
 	else
 		addr = obj->phys_handle->busaddr;
 
@@ -17224,41 +17217,12 @@  void intel_display_resume(struct drm_device *dev)
 void intel_modeset_gem_init(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct drm_crtc *c;
-	struct drm_i915_gem_object *obj;
 
 	intel_init_gt_powersave(dev_priv);
 
 	intel_modeset_init_hw(dev);
 
 	intel_setup_overlay(dev_priv);
-
-	/*
-	 * Make sure any fbs we allocated at startup are properly
-	 * pinned & fenced.  When we do the allocation it's too early
-	 * for this.
-	 */
-	for_each_crtc(dev, c) {
-		struct i915_vma *vma;
-
-		obj = intel_fb_obj(c->primary->fb);
-		if (obj == NULL)
-			continue;
-
-		mutex_lock(&dev->struct_mutex);
-		vma = intel_pin_and_fence_fb_obj(c->primary->fb,
-						 c->primary->state->rotation);
-		mutex_unlock(&dev->struct_mutex);
-		if (IS_ERR(vma)) {
-			DRM_ERROR("failed to pin boot fb on pipe %d\n",
-				  to_intel_crtc(c)->pipe);
-			drm_framebuffer_unreference(c->primary->fb);
-			c->primary->fb = NULL;
-			c->primary->crtc = c->primary->state->crtc = NULL;
-			update_state_fb(c->primary);
-			c->state->plane_mask &= ~(1 << drm_plane_index(c->primary));
-		}
-	}
 }
 
 int intel_connector_register(struct drm_connector *connector)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 84258df3e8f1..0cec0013ace0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -376,6 +376,7 @@  struct intel_atomic_state {
 struct intel_plane_state {
 	struct drm_plane_state base;
 	struct drm_rect clip;
+	struct i915_vma *vma;
 
 	struct {
 		u32 offset;
@@ -1067,6 +1068,7 @@  struct intel_flip_work {
 	struct work_struct mmio_work;
 
 	struct drm_crtc *crtc;
+	struct i915_vma *old_vma;
 	struct drm_framebuffer *old_fb;
 	struct drm_i915_gem_object *pending_flip_obj;
 	struct drm_pending_vblank_event *event;
@@ -1302,7 +1304,7 @@  void intel_release_load_detect_pipe(struct drm_connector *connector,
 				    struct drm_modeset_acquire_ctx *ctx);
 struct i915_vma *
 intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, unsigned int rotation);
-void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation);
+void intel_unpin_fb_vma(struct i915_vma *vma);
 struct drm_framebuffer *
 __intel_framebuffer_create(struct drm_device *dev,
 			   struct drm_mode_fb_cmd2 *mode_cmd,
@@ -1391,7 +1393,10 @@  void intel_mode_from_pipe_config(struct drm_display_mode *mode,
 int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
 int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);
 
-u32 intel_fb_gtt_offset(struct drm_framebuffer *fb, unsigned int rotation);
+static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *state)
+{
+	return i915_ggtt_offset(state->vma);
+}
 
 u32 skl_plane_ctl_format(uint32_t pixel_format);
 u32 skl_plane_ctl_tiling(uint64_t fb_modifier);
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 98cb85c88aff..89fe5c8464df 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -173,7 +173,7 @@  static void i8xx_fbc_activate(struct drm_i915_private *dev_priv)
 	if (IS_I945GM(dev_priv))
 		fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
 	fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
-	fbc_ctl |= params->fb.fence_reg;
+	fbc_ctl |= params->vma->fence->id;
 	I915_WRITE(FBC_CONTROL, fbc_ctl);
 }
 
@@ -193,8 +193,8 @@  static void g4x_fbc_activate(struct drm_i915_private *dev_priv)
 	else
 		dpfc_ctl |= DPFC_CTL_LIMIT_1X;
 
-	if (params->fb.fence_reg != I915_FENCE_REG_NONE) {
-		dpfc_ctl |= DPFC_CTL_FENCE_EN | params->fb.fence_reg;
+	if (params->vma->fence) {
+		dpfc_ctl |= DPFC_CTL_FENCE_EN | params->vma->fence->id;
 		I915_WRITE(DPFC_FENCE_YOFF, params->crtc.fence_y_offset);
 	} else {
 		I915_WRITE(DPFC_FENCE_YOFF, 0);
@@ -251,13 +251,14 @@  static void ilk_fbc_activate(struct drm_i915_private *dev_priv)
 		break;
 	}
 
-	if (params->fb.fence_reg != I915_FENCE_REG_NONE) {
+	if (params->vma->fence) {
 		dpfc_ctl |= DPFC_CTL_FENCE_EN;
 		if (IS_GEN5(dev_priv))
-			dpfc_ctl |= params->fb.fence_reg;
+			dpfc_ctl |= params->vma->fence->id;
 		if (IS_GEN6(dev_priv)) {
 			I915_WRITE(SNB_DPFC_CTL_SA,
-				   SNB_CPU_FENCE_ENABLE | params->fb.fence_reg);
+				   SNB_CPU_FENCE_ENABLE |
+				   params->vma->fence->id);
 			I915_WRITE(DPFC_CPU_FENCE_OFFSET,
 				   params->crtc.fence_y_offset);
 		}
@@ -269,7 +270,8 @@  static void ilk_fbc_activate(struct drm_i915_private *dev_priv)
 	}
 
 	I915_WRITE(ILK_DPFC_FENCE_YOFF, params->crtc.fence_y_offset);
-	I915_WRITE(ILK_FBC_RT_BASE, params->fb.ggtt_offset | ILK_FBC_RT_VALID);
+	I915_WRITE(ILK_FBC_RT_BASE,
+		   i915_ggtt_offset(params->vma) | ILK_FBC_RT_VALID);
 	/* enable it... */
 	I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN);
 
@@ -319,10 +321,11 @@  static void gen7_fbc_activate(struct drm_i915_private *dev_priv)
 		break;
 	}
 
-	if (params->fb.fence_reg != I915_FENCE_REG_NONE) {
+	if (params->vma->fence) {
 		dpfc_ctl |= IVB_DPFC_CTL_FENCE_EN;
 		I915_WRITE(SNB_DPFC_CTL_SA,
-			   SNB_CPU_FENCE_ENABLE | params->fb.fence_reg);
+			   SNB_CPU_FENCE_ENABLE |
+			   params->vma->fence->id);
 		I915_WRITE(DPFC_CPU_FENCE_OFFSET, params->crtc.fence_y_offset);
 	} else {
 		I915_WRITE(SNB_DPFC_CTL_SA,0);
@@ -727,14 +730,6 @@  static bool intel_fbc_hw_tracking_covers_screen(struct intel_crtc *crtc)
 	return effective_w <= max_w && effective_h <= max_h;
 }
 
-/* XXX replace me when we have VMA tracking for intel_plane_state */
-static int get_fence_id(struct drm_framebuffer *fb)
-{
-	struct i915_vma *vma = i915_gem_object_to_ggtt(intel_fb_obj(fb), NULL);
-
-	return vma && vma->fence ? vma->fence->id : I915_FENCE_REG_NONE;
-}
-
 static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
 					 struct intel_crtc_state *crtc_state,
 					 struct intel_plane_state *plane_state)
@@ -743,7 +738,8 @@  static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
 	struct intel_fbc *fbc = &dev_priv->fbc;
 	struct intel_fbc_state_cache *cache = &fbc->state_cache;
 	struct drm_framebuffer *fb = plane_state->base.fb;
-	struct drm_i915_gem_object *obj;
+
+	cache->vma = NULL;
 
 	cache->crtc.mode_flags = crtc_state->base.adjusted_mode.flags;
 	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
@@ -758,16 +754,10 @@  static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
 	if (!cache->plane.visible)
 		return;
 
-	obj = intel_fb_obj(fb);
-
-	/* FIXME: We lack the proper locking here, so only run this on the
-	 * platforms that need. */
-	if (IS_GEN(dev_priv, 5, 6))
-		cache->fb.ilk_ggtt_offset = i915_gem_object_ggtt_offset(obj, NULL);
 	cache->fb.format = fb->format;
 	cache->fb.stride = fb->pitches[0];
-	cache->fb.fence_reg = get_fence_id(fb);
-	cache->fb.tiling_mode = i915_gem_object_get_tiling(obj);
+
+	cache->vma = plane_state->vma;
 }
 
 static bool intel_fbc_can_activate(struct intel_crtc *crtc)
@@ -784,7 +774,7 @@  static bool intel_fbc_can_activate(struct intel_crtc *crtc)
 		return false;
 	}
 
-	if (!cache->plane.visible) {
+	if (!cache->vma) {
 		fbc->no_fbc_reason = "primary plane not visible";
 		return false;
 	}
@@ -807,8 +797,7 @@  static bool intel_fbc_can_activate(struct intel_crtc *crtc)
 	 * so have no fence associated with it) due to aperture constaints
 	 * at the time of pinning.
 	 */
-	if (cache->fb.tiling_mode != I915_TILING_X ||
-	    cache->fb.fence_reg == I915_FENCE_REG_NONE) {
+	if (!cache->vma->fence) {
 		fbc->no_fbc_reason = "framebuffer not tiled or fenced";
 		return false;
 	}
@@ -888,17 +877,16 @@  static void intel_fbc_get_reg_params(struct intel_crtc *crtc,
 	 * zero. */
 	memset(params, 0, sizeof(*params));
 
+	params->vma = cache->vma;
+
 	params->crtc.pipe = crtc->pipe;
 	params->crtc.plane = crtc->plane;
 	params->crtc.fence_y_offset = get_crtc_fence_y_offset(crtc);
 
 	params->fb.format = cache->fb.format;
 	params->fb.stride = cache->fb.stride;
-	params->fb.fence_reg = cache->fb.fence_reg;
 
 	params->cfb_size = intel_fbc_calculate_cfb_size(dev_priv, cache);
-
-	params->fb.ggtt_offset = cache->fb.ilk_ggtt_offset;
 }
 
 static bool intel_fbc_reg_params_equal(struct intel_fbc_reg_params *params1,
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index bdefa61f2e60..be94e2d8b13d 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -284,7 +284,7 @@  static int intelfb_create(struct drm_fb_helper *helper,
 out_destroy_fbi:
 	drm_fb_helper_release_fbi(helper);
 out_unpin:
-	intel_unpin_fb_obj(&ifbdev->fb->base, DRM_ROTATE_0);
+	intel_unpin_fb_vma(vma);
 out_unlock:
 	mutex_unlock(&dev->struct_mutex);
 	return ret;
@@ -549,7 +549,7 @@  static void intel_fbdev_destroy(struct intel_fbdev *ifbdev)
 
 	if (ifbdev->fb) {
 		mutex_lock(&ifbdev->helper.dev->struct_mutex);
-		intel_unpin_fb_obj(&ifbdev->fb->base, DRM_ROTATE_0);
+		intel_unpin_fb_vma(ifbdev->vma);
 		mutex_unlock(&ifbdev->helper.dev->struct_mutex);
 
 		drm_framebuffer_remove(&ifbdev->fb->base);
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 7031bc733d97..9ef54688872a 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -273,7 +273,7 @@  skl_update_plane(struct drm_plane *drm_plane,
 
 	I915_WRITE(PLANE_CTL(pipe, plane_id), plane_ctl);
 	I915_WRITE(PLANE_SURF(pipe, plane_id),
-		   intel_fb_gtt_offset(fb, rotation) + surf_addr);
+		   intel_plane_ggtt_offset(plane_state) + surf_addr);
 	POSTING_READ(PLANE_SURF(pipe, plane_id));
 }
 
@@ -458,7 +458,7 @@  vlv_update_plane(struct drm_plane *dplane,
 	I915_WRITE(SPSIZE(pipe, plane_id), (crtc_h << 16) | crtc_w);
 	I915_WRITE(SPCNTR(pipe, plane_id), sprctl);
 	I915_WRITE(SPSURF(pipe, plane_id),
-		   intel_fb_gtt_offset(fb, rotation) + sprsurf_offset);
+		   intel_plane_ggtt_offset(plane_state) + sprsurf_offset);
 	POSTING_READ(SPSURF(pipe, plane_id));
 }
 
@@ -594,7 +594,7 @@  ivb_update_plane(struct drm_plane *plane,
 		I915_WRITE(SPRSCALE(pipe), sprscale);
 	I915_WRITE(SPRCTL(pipe), sprctl);
 	I915_WRITE(SPRSURF(pipe),
-		   intel_fb_gtt_offset(fb, rotation) + sprsurf_offset);
+		   intel_plane_ggtt_offset(plane_state) + sprsurf_offset);
 	POSTING_READ(SPRSURF(pipe));
 }
 
@@ -721,7 +721,7 @@  ilk_update_plane(struct drm_plane *plane,
 	I915_WRITE(DVSSCALE(pipe), dvsscale);
 	I915_WRITE(DVSCNTR(pipe), dvscntr);
 	I915_WRITE(DVSSURF(pipe),
-		   intel_fb_gtt_offset(fb, rotation) + dvssurf_offset);
+		   intel_plane_ggtt_offset(plane_state) + dvssurf_offset);
 	POSTING_READ(DVSSURF(pipe));
 }
 

Comments

On ma, 2017-01-16 at 15:21 +0000, Chris Wilson wrote:
> With atomic plane states we are able to track an allocation right from
> preparation, during use and through to the final free after being
> swapped out for a new plane. We can couple the VMA we pin for the
> framebuffer (and its rotation) to this lifetime and avoid all the clumsy
> lookups in between.
> 
> v2: Remove residual vma on plane cleanup (Chris)
> v3: Add a description for the vma destruction in
>     intel_plane_destroy_state (Maarten)
> 
> References: https://bugs.freedesktop.org/show_bug.cgi?id=98829
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Regards, Joonas

<SNIP>

>  intel_cleanup_plane_fb(struct drm_plane *plane,
>  		       struct drm_plane_state *old_state)
>  {

<SNIP>

> -	if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR ||
> -	    !INTEL_INFO(dev_priv)->cursor_needs_physical))
> -		intel_unpin_fb_obj(old_state->fb, old_state->rotation);
> +	/* Should only called after a successful intel_prepare_plane_fb()! */

Should only be...

> +	vma = fetch_and_zero(&to_intel_plane_state(old_state)->vma);
> +	if (vma)
> +		intel_unpin_fb_vma(vma);
>  }

Apart from that, it's good as far as the GEM changes go, so;

Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Regards, Joonas
On Thu, Jan 19, 2017 at 11:45:24AM +0200, Joonas Lahtinen wrote:
> On ma, 2017-01-16 at 15:21 +0000, Chris Wilson wrote:
> > With atomic plane states we are able to track an allocation right from
> > preparation, during use and through to the final free after being
> > swapped out for a new plane. We can couple the VMA we pin for the
> > framebuffer (and its rotation) to this lifetime and avoid all the clumsy
> > lookups in between.
> > 
> > v2: Remove residual vma on plane cleanup (Chris)
> > v3: Add a description for the vma destruction in
> >     intel_plane_destroy_state (Maarten)
> > 
> > References: https://bugs.freedesktop.org/show_bug.cgi?id=98829
> > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> > Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> 
> Regards, Joonas
> 
> <SNIP>
> 
> >  intel_cleanup_plane_fb(struct drm_plane *plane,
> >  		       struct drm_plane_state *old_state)
> >  {
> 
> <SNIP>
> 
> > -	if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR ||
> > -	    !INTEL_INFO(dev_priv)->cursor_needs_physical))
> > -		intel_unpin_fb_obj(old_state->fb, old_state->rotation);
> > +	/* Should only called after a successful intel_prepare_plane_fb()! */
> 
> Should only be...
> 
> > +	vma = fetch_and_zero(&to_intel_plane_state(old_state)->vma);
> > +	if (vma)
> > +		intel_unpin_fb_vma(vma);
> >  }
> 
> Apart from that, it's good as far as the GEM changes go, so;
> 
> Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Ta,
-Chris