<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [BYT Regression]igt/gem_concurrent_blit/gtt-gpu-read-after-write-forked causes *ERROR* timed out waiting for Punit" href="https://bugs.freedesktop.org/show_bug.cgi?id=75244#c19">Comment # 19</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [BYT Regression]igt/gem_concurrent_blit/gtt-gpu-read-after-write-forked causes *ERROR* timed out waiting for Punit" href="https://bugs.freedesktop.org/show_bug.cgi?id=75244">bug 75244</a> from <a class="email" href="mailto:deepak.s@intel.com" title="Deepak S <deepak.s@intel.com>"> Deepak S</a> <pre>Since disabling RC6 is helping us. Shall we try doing a forcewake before request the freq? If this does not help we might need help from HW team. diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 0115689..1fea122 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3254,18 +3254,18 @@ static void vlv_set_rps_idle(struct drm_i915_private *dev_priv) /* Mask turbo interrupt so that they will not come in between */ I915_WRITE(GEN6_PMINTRMSK, 0xffffffff); - vlv_force_gfx_clock(dev_priv, true); - dev_priv->rps.cur_freq = dev_priv->rps.min_freq_softlimit; + gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL); + vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, dev_priv->rps.min_freq_softlimit); if (wait_for(((vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS)) - & GENFREQSTATUS) == 0, 5)) + & GENFREQSTATUS) == 0, 10)) DRM_ERROR("timed out waiting for Punit\n"); - vlv_force_gfx_clock(dev_priv, false); + gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL); I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, dev_priv->rps.cur_freq));</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>