[Intel-gfx] [PATCH 6/7] drm/i915: add frontbuffer tracking to FBC
Paulo Zanoni
przanoni at gmail.com
Fri Feb 13 11:23:46 PST 2015
From: Paulo Zanoni <paulo.r.zanoni at intel.com>
Kill the blt/render tracking we currently have and use the frontbuffer
tracking infrastructure.
Don't enable things by default yet.
v2: (Rodrigo) Fix small conflict on rebase and typo at subject.
v3: (Paulo) Rebase on RENDER_CS change.
v4: (Paulo) Rebase.
v5: (Paulo) Simplify: flushes don't have origin (Daniel).
Also rebase due to patch order changes.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 10 +---
drivers/gpu/drm/i915/intel_drv.h | 6 ++-
drivers/gpu/drm/i915/intel_fbc.c | 91 +++++++++++++++++++-------------
drivers/gpu/drm/i915/intel_frontbuffer.c | 14 +----
drivers/gpu/drm/i915/intel_ringbuffer.c | 41 +-------------
drivers/gpu/drm/i915/intel_ringbuffer.h | 1 -
6 files changed, 65 insertions(+), 98 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 30aaa8e..7680ca0 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -783,6 +783,8 @@ struct i915_fbc {
unsigned long uncompressed_size;
unsigned threshold;
unsigned int fb_id;
+ unsigned int possible_framebuffer_bits;
+ unsigned int busy_bits;
struct intel_crtc *crtc;
int y;
@@ -795,14 +797,6 @@ struct i915_fbc {
* possible. */
bool enabled;
- /* On gen8 some rings cannont perform fbc clean operation so for now
- * we are doing this on SW with mmio.
- * This variable works in the opposite information direction
- * of ring->fbc_dirty telling software on frontbuffer tracking
- * to perform the cache clean on sw side.
- */
- bool need_sw_cache_clean;
-
struct intel_fbc_work {
struct delayed_work work;
struct drm_crtc *crtc;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 05d0a43f..571174f 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1091,7 +1091,11 @@ bool intel_fbc_enabled(struct drm_device *dev);
void intel_fbc_update(struct drm_device *dev);
void intel_fbc_init(struct drm_i915_private *dev_priv);
void intel_fbc_disable(struct drm_device *dev);
-void bdw_fbc_sw_flush(struct drm_device *dev, u32 value);
+void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
+ unsigned int frontbuffer_bits,
+ enum fb_op_origin origin);
+void intel_fbc_flush(struct drm_i915_private *dev_priv,
+ unsigned int frontbuffer_bits);
/* intel_hdmi.c */
void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port);
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 618f7bd..9fcf446 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -174,29 +174,10 @@ static bool g4x_fbc_enabled(struct drm_device *dev)
return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
}
-static void snb_fbc_blit_update(struct drm_device *dev)
+static void intel_fbc_nuke(struct drm_i915_private *dev_priv)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 blt_ecoskpd;
-
- /* Make sure blitter notifies FBC of writes */
-
- /* Blitter is part of Media powerwell on VLV. No impact of
- * his param in other platforms for now */
- intel_uncore_forcewake_get(dev_priv, FORCEWAKE_MEDIA);
-
- blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
- blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
- GEN6_BLITTER_LOCK_SHIFT;
- I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
- blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY;
- I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
- blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY <<
- GEN6_BLITTER_LOCK_SHIFT);
- I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
- POSTING_READ(GEN6_BLITTER_ECOSKPD);
-
- intel_uncore_forcewake_put(dev_priv, FORCEWAKE_MEDIA);
+ I915_WRITE(MSG_FBC_REND_STATE, FBC_REND_NUKE);
+ POSTING_READ(MSG_FBC_REND_STATE);
}
static void ilk_fbc_enable(struct drm_crtc *crtc)
@@ -239,9 +220,10 @@ static void ilk_fbc_enable(struct drm_crtc *crtc)
I915_WRITE(SNB_DPFC_CTL_SA,
SNB_CPU_FENCE_ENABLE | obj->fence_reg);
I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
- snb_fbc_blit_update(dev);
}
+ intel_fbc_nuke(dev_priv);
+
DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane));
}
@@ -320,7 +302,7 @@ static void gen7_fbc_enable(struct drm_crtc *crtc)
SNB_CPU_FENCE_ENABLE | obj->fence_reg);
I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
- snb_fbc_blit_update(dev);
+ intel_fbc_nuke(dev_priv);
DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane));
}
@@ -340,19 +322,6 @@ bool intel_fbc_enabled(struct drm_device *dev)
return dev_priv->fbc.enabled;
}
-void bdw_fbc_sw_flush(struct drm_device *dev, u32 value)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- if (!IS_GEN8(dev))
- return;
-
- if (!intel_fbc_enabled(dev))
- return;
-
- I915_WRITE(MSG_FBC_REND_STATE, value);
-}
-
static void intel_fbc_work_fn(struct work_struct *__work)
{
struct intel_fbc_work *work =
@@ -685,6 +654,44 @@ out_disable:
i915_gem_stolen_cleanup_compression(dev);
}
+void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
+ unsigned int frontbuffer_bits,
+ enum fb_op_origin origin)
+{
+ struct drm_device *dev = dev_priv->dev;
+ unsigned int fbc_bits;
+
+ if (origin == ORIGIN_GTT)
+ return;
+
+ if (dev_priv->fbc.enabled)
+ fbc_bits = INTEL_FRONTBUFFER_PRIMARY(dev_priv->fbc.crtc->pipe);
+ else if (dev_priv->fbc.fbc_work)
+ fbc_bits = INTEL_FRONTBUFFER_PRIMARY(
+ to_intel_crtc(dev_priv->fbc.fbc_work->crtc)->pipe);
+ else
+ fbc_bits = dev_priv->fbc.possible_framebuffer_bits;
+
+ dev_priv->fbc.busy_bits |= (fbc_bits & frontbuffer_bits);
+
+ if (dev_priv->fbc.busy_bits)
+ intel_fbc_disable(dev);
+}
+
+void intel_fbc_flush(struct drm_i915_private *dev_priv,
+ unsigned int frontbuffer_bits)
+{
+ struct drm_device *dev = dev_priv->dev;
+
+ if (!dev_priv->fbc.busy_bits)
+ return;
+
+ dev_priv->fbc.busy_bits &= ~frontbuffer_bits;
+
+ if (!dev_priv->fbc.busy_bits)
+ intel_fbc_update(dev);
+}
+
/**
* intel_fbc_init - Initialize FBC
* @dev_priv: the i915 device
@@ -693,12 +700,22 @@ out_disable:
*/
void intel_fbc_init(struct drm_i915_private *dev_priv)
{
+ enum pipe pipe;
+
if (!HAS_FBC(dev_priv)) {
dev_priv->fbc.enabled = false;
dev_priv->fbc.no_fbc_reason = FBC_UNSUPPORTED;
return;
}
+ for_each_pipe(dev_priv, pipe) {
+ dev_priv->fbc.possible_framebuffer_bits |=
+ INTEL_FRONTBUFFER_PRIMARY(pipe);
+
+ if (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)
+ break;
+ }
+
if (INTEL_INFO(dev_priv)->gen >= 7) {
dev_priv->display.fbc_enabled = ilk_fbc_enabled;
dev_priv->display.enable_fbc = gen7_fbc_enable;
diff --git a/drivers/gpu/drm/i915/intel_frontbuffer.c b/drivers/gpu/drm/i915/intel_frontbuffer.c
index 5da73f0..0a1bac8 100644
--- a/drivers/gpu/drm/i915/intel_frontbuffer.c
+++ b/drivers/gpu/drm/i915/intel_frontbuffer.c
@@ -118,8 +118,6 @@ static void intel_mark_fb_busy(struct drm_device *dev,
continue;
intel_increase_pllclock(dev, pipe);
- if (ring && intel_fbc_enabled(dev))
- ring->fbc_dirty = true;
}
}
@@ -160,6 +158,7 @@ void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,
intel_psr_invalidate(dev, obj->frontbuffer_bits);
intel_edp_drrs_invalidate(dev, obj->frontbuffer_bits);
+ intel_fbc_invalidate(dev_priv, obj->frontbuffer_bits, origin);
}
/**
@@ -187,16 +186,7 @@ void intel_frontbuffer_flush(struct drm_device *dev,
intel_edp_drrs_flush(dev, frontbuffer_bits);
intel_psr_flush(dev, frontbuffer_bits);
-
- /*
- * FIXME: Unconditional fbc flushing here is a rather gross hack and
- * needs to be reworked into a proper frontbuffer tracking scheme like
- * psr employs.
- */
- if (dev_priv->fbc.need_sw_cache_clean) {
- dev_priv->fbc.need_sw_cache_clean = false;
- bdw_fbc_sw_flush(dev, FBC_REND_CACHE_CLEAN);
- }
+ intel_fbc_flush(dev_priv, frontbuffer_bits);
}
/**
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index d17e76d..fed6284 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -317,29 +317,6 @@ gen7_render_ring_cs_stall_wa(struct intel_engine_cs *ring)
return 0;
}
-static int gen7_ring_fbc_flush(struct intel_engine_cs *ring, u32 value)
-{
- int ret;
-
- if (!ring->fbc_dirty)
- return 0;
-
- ret = intel_ring_begin(ring, 6);
- if (ret)
- return ret;
- /* WaFbcNukeOn3DBlt:ivb/hsw */
- intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
- intel_ring_emit(ring, MSG_FBC_REND_STATE);
- intel_ring_emit(ring, value);
- intel_ring_emit(ring, MI_STORE_REGISTER_MEM(1) | MI_SRM_LRM_GLOBAL_GTT);
- intel_ring_emit(ring, MSG_FBC_REND_STATE);
- intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
- intel_ring_advance(ring);
-
- ring->fbc_dirty = false;
- return 0;
-}
-
static int
gen7_render_ring_flush(struct intel_engine_cs *ring,
u32 invalidate_domains, u32 flush_domains)
@@ -398,9 +375,6 @@ gen7_render_ring_flush(struct intel_engine_cs *ring,
intel_ring_emit(ring, 0);
intel_ring_advance(ring);
- if (!invalidate_domains && flush_domains)
- return gen7_ring_fbc_flush(ring, FBC_REND_NUKE);
-
return 0;
}
@@ -462,9 +436,6 @@ gen8_render_ring_flush(struct intel_engine_cs *ring,
if (ret)
return ret;
- if (!invalidate_domains && flush_domains)
- return gen7_ring_fbc_flush(ring, FBC_REND_NUKE);
-
return 0;
}
@@ -2420,7 +2391,6 @@ static int gen6_ring_flush(struct intel_engine_cs *ring,
u32 invalidate, u32 flush)
{
struct drm_device *dev = ring->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t cmd;
int ret;
@@ -2429,7 +2399,7 @@ static int gen6_ring_flush(struct intel_engine_cs *ring,
return ret;
cmd = MI_FLUSH_DW;
- if (INTEL_INFO(ring->dev)->gen >= 8)
+ if (INTEL_INFO(dev)->gen >= 8)
cmd += 1;
/* We always require a command barrier so that subsequent
@@ -2449,7 +2419,7 @@ static int gen6_ring_flush(struct intel_engine_cs *ring,
cmd |= MI_INVALIDATE_TLB;
intel_ring_emit(ring, cmd);
intel_ring_emit(ring, I915_GEM_HWS_SCRATCH_ADDR | MI_FLUSH_DW_USE_GTT);
- if (INTEL_INFO(ring->dev)->gen >= 8) {
+ if (INTEL_INFO(dev)->gen >= 8) {
intel_ring_emit(ring, 0); /* upper addr */
intel_ring_emit(ring, 0); /* value */
} else {
@@ -2458,13 +2428,6 @@ static int gen6_ring_flush(struct intel_engine_cs *ring,
}
intel_ring_advance(ring);
- if (!invalidate && flush) {
- if (IS_GEN7(dev))
- return gen7_ring_fbc_flush(ring, FBC_REND_CACHE_CLEAN);
- else if (IS_BROADWELL(dev))
- dev_priv->fbc.need_sw_cache_clean = true;
- }
-
return 0;
}
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index b6c484f..2ac2de2 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -267,7 +267,6 @@ struct intel_engine_cs {
*/
struct drm_i915_gem_request *outstanding_lazy_request;
bool gpu_caches_dirty;
- bool fbc_dirty;
wait_queue_head_t irq_queue;
--
2.1.4
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