From 05fc3cea6f8a70f62509c9f166e593f44e6c20c7 Mon Sep 17 00:00:00 2001
From: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Date: Thu, 30 Apr 2020 22:56:34 +0300
Subject: drm/i915: Track active_pipes in bw_state
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Git-commit: ecab0f3d055d333640bbe2aa5a5141574a65c534
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
We need to calculate SAGV mask also in a non-modeset
commit, however currently active_pipes are only calculated
for modesets in global atomic state, thus now we will be
tracking those also in bw_state in order to be able to
properly access global data.
v2: - Removed pre/post plane SAGV updates from modeset(Ville)
- Now tracking active pipes in intel_can_enable_sagv(Ville)
v3: - lock global state if active_pipes change as well(Ville)
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200430195634.7666-1-stanislav.lisovskiy@intel.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_bw.h | 3 +++
drivers/gpu/drm/i915/display/intel_display.c | 9 +++----
drivers/gpu/drm/i915/intel_pm.c | 27 ++++++++++----------
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h
index d6df91058223..898b4a85ccab 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.h
+++ b/drivers/gpu/drm/i915/display/intel_bw.h
@@ -26,6 +26,9 @@ struct intel_bw_state {
unsigned int data_rate[I915_MAX_PIPES];
u8 num_active_planes[I915_MAX_PIPES];
+
+ /* bitmask of active pipes */
+ u8 active_pipes;
};
#define to_intel_bw_state(x) container_of((x), struct intel_bw_state, base)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 2a17cf38d3dc..fd6d63b03489 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -15378,11 +15378,11 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
intel_set_cdclk_pre_plane_update(state);
- intel_sagv_pre_plane_update(state);
-
intel_modeset_verify_disabled(dev_priv, state);
}
+ intel_sagv_pre_plane_update(state);
+
/* Complete the events for pipes that have now been disabled */
for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
bool modeset = needs_modeset(new_crtc_state);
@@ -15475,11 +15475,10 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
intel_check_cpu_fifo_underruns(dev_priv);
intel_check_pch_fifo_underruns(dev_priv);
- if (state->modeset) {
+ if (state->modeset)
intel_verify_planes(state);
- intel_sagv_post_plane_update(state);
- }
+ intel_sagv_post_plane_update(state);
drm_atomic_helper_commit_hw_done(&state->base);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 46b20d4c2bfd..550e9e5d6974 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3806,7 +3806,6 @@ void intel_sagv_post_plane_update(struct intel_atomic_state *state)
static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
{
- struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->uapi.state);
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_plane *plane;
@@ -3819,13 +3818,6 @@ static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state
if (!crtc_state->hw.active)
return true;
- /*
- * SKL+ workaround: bspec recommends we disable SAGV when we have
- * more then one pipe enabled
- */
- if (hweight8(state->active_pipes) > 1)
- return false;
-
if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
return false;
@@ -3863,6 +3855,9 @@ static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state
bool intel_can_enable_sagv(const struct intel_bw_state *bw_state)
{
+ if (bw_state->active_pipes && !is_power_of_2(bw_state->active_pipes))
+ return false;
+
return bw_state->pipe_sagv_reject == 0;
}
@@ -3892,6 +3887,14 @@ static int intel_compute_sagv_mask(struct intel_atomic_state *state)
if (!new_bw_state)
return 0;
+ new_bw_state->active_pipes =
+ intel_calc_active_pipes(state, old_bw_state->active_pipes);
+ if (new_bw_state->active_pipes != old_bw_state->active_pipes) {
+ ret = intel_atomic_lock_global_state(&new_bw_state->base);
+ if (ret)
+ return ret;
+ }
+
if (intel_can_enable_sagv(new_bw_state) != intel_can_enable_sagv(old_bw_state)) {
ret = intel_atomic_serialize_global_state(&new_bw_state->base);
if (ret)
@@ -5866,11 +5869,9 @@ skl_compute_wm(struct intel_atomic_state *state)
if (ret)
return ret;
- if (state->modeset) {
- ret = intel_compute_sagv_mask(state);
- if (ret)
- return ret;
- }
+ ret = intel_compute_sagv_mask(state);
+ if (ret)
+ return ret;
/*
* skl_compute_ddb() will have adjusted the final watermarks
--
2.28.0