diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-09-24 23:29:20 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-30 10:20:39 +0200 |
| commit | 7bad74d57c81b08218cc564af3a78427e12bf3ac (patch) | |
| tree | e924b66062059294cf21f8fab305005da9490a4e /drivers | |
| parent | 2cc9fab180e8add4159ed1fc874131f984d0bcb1 (diff) | |
drm/i915: Use czclk_freq in vlv c0 residency calculations
Replace the use of mem_freq/4 with czclk_freq in the vlv c0 residency
calculations.
Also deal with VLV_COUNT_RANGE_HIGH which affects all RCx residency
counters. We have just enough bits to do this without intermediate
divisions.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index ff85eae932bc..76bd40e13391 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -997,12 +997,16 @@ static bool vlv_c0_above(struct drm_i915_private *dev_priv, int threshold) { u64 time, c0; + unsigned int mul = 100; if (old->cz_clock == 0) return false; + if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) + mul <<= 8; + time = now->cz_clock - old->cz_clock; - time *= threshold * dev_priv->mem_freq; + time *= threshold * dev_priv->czclk_freq; /* Workload can be split between render + media, e.g. SwapBuffers * being blitted in X after being rendered in mesa. To account for @@ -1010,7 +1014,7 @@ static bool vlv_c0_above(struct drm_i915_private *dev_priv, */ c0 = now->render_c0 - old->render_c0; c0 += now->media_c0 - old->media_c0; - c0 *= 100 * VLV_CZ_CLOCK_TO_MILLI_SEC * 4 / 1000; + c0 *= mul * VLV_CZ_CLOCK_TO_MILLI_SEC; return c0 >= time; } |