This is a hack and not needed. Use the right mask by checking
intel_state->modeset. This works for watermark sanitization too.

Signed-off-by: Maarten Lankhorst <[email protected]>
---
 drivers/gpu/drm/i915/intel_pm.c | 38 +++++++++++++++-----------------------
 1 file changed, 15 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 02f52b52a03d..d38a46efcfed 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3089,26 +3089,22 @@ skl_ddb_get_pipe_allocation_limits(struct drm_device 
*dev,
        struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
        struct drm_i915_private *dev_priv = to_i915(dev);
        struct drm_crtc *for_crtc = cstate->base.crtc;
-       unsigned int pipe_size, ddb_size;
+       unsigned int pipe_size, ddb_size, active_crtcs;
        int nth_active_pipe;
 
+       if (intel_state->modeset)
+               active_crtcs = intel_state->active_crtcs;
+       else
+               active_crtcs = dev_priv->active_crtcs;
+
+       *num_active = hweight32(active_crtcs);
+
        if (WARN_ON(!state) || !cstate->base.active) {
                alloc->start = 0;
                alloc->end = 0;
-               *num_active = hweight32(dev_priv->active_crtcs);
                return;
        }
 
-       if (intel_state->active_pipe_changes)
-               *num_active = hweight32(intel_state->active_crtcs);
-       else
-               *num_active = hweight32(dev_priv->active_crtcs);
-
-       ddb_size = INTEL_INFO(dev_priv)->ddb_size;
-       WARN_ON(ddb_size == 0);
-
-       ddb_size -= 4; /* 4 blocks for bypass path allocation */
-
        /*
         * If the state doesn't change the active CRTC's, then there's
         * no need to recalculate; the existing pipe allocation limits
@@ -3126,9 +3122,14 @@ skl_ddb_get_pipe_allocation_limits(struct drm_device 
*dev,
                return;
        }
 
-       nth_active_pipe = hweight32(intel_state->active_crtcs &
+       ddb_size = INTEL_INFO(dev_priv)->ddb_size;
+       WARN_ON(ddb_size == 0);
+
+       ddb_size -= 4; /* 4 blocks for bypass path allocation */
+
+       nth_active_pipe = hweight32(active_crtcs &
                                    (drm_crtc_mask(for_crtc) - 1));
-       pipe_size = ddb_size / hweight32(intel_state->active_crtcs);
+       pipe_size = ddb_size / *num_active;
        alloc->start = nth_active_pipe * ddb_size / *num_active;
        alloc->end = alloc->start + pipe_size;
 }
@@ -4021,15 +4022,6 @@ skl_compute_ddb(struct drm_atomic_state *state)
                        return ret;
 
                intel_state->active_pipe_changes = ~0;
-
-               /*
-                * We usually only initialize intel_state->active_crtcs if we
-                * we're doing a modeset; make sure this field is always
-                * initialized during the sanitization process that happens
-                * on the first commit too.
-                */
-               if (!intel_state->modeset)
-                       intel_state->active_crtcs = dev_priv->active_crtcs;
        }
 
        /*
-- 
2.7.4

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