diff options
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_uc.c | 33 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_uc.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 4 |
3 files changed, 34 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c index 6eb8bb3fa252..26671f1daaf7 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c @@ -233,11 +233,18 @@ static void guc_disable_interrupts(struct intel_guc *guc) guc->interrupts.disable(guc); } +static inline bool guc_communication_enabled(struct intel_guc *guc) +{ + return guc->send != intel_guc_send_nop; +} + static int guc_enable_communication(struct intel_guc *guc) { struct drm_i915_private *i915 = guc_to_gt(guc)->i915; int ret; + GEM_BUG_ON(guc_communication_enabled(guc)); + ret = intel_guc_ct_enable(&guc->ct); if (ret) return ret; @@ -550,7 +557,7 @@ void intel_uc_suspend(struct intel_uc *uc) intel_uc_runtime_suspend(uc); } -int intel_uc_resume(struct intel_uc *uc) +static int __uc_resume(struct intel_uc *uc, bool enable_communication) { struct intel_guc *guc = &uc->guc; int err; @@ -558,7 +565,11 @@ int intel_uc_resume(struct intel_uc *uc) if (!intel_guc_is_running(guc)) return 0; - guc_enable_communication(guc); + /* Make sure we enable communication if and only if it's disabled */ + GEM_BUG_ON(enable_communication == guc_communication_enabled(guc)); + + if (enable_communication) + guc_enable_communication(guc); err = intel_guc_resume(guc); if (err) { @@ -568,3 +579,21 @@ int intel_uc_resume(struct intel_uc *uc) return 0; } + +int intel_uc_resume(struct intel_uc *uc) +{ + /* + * When coming out of S3/S4 we sanitize and re-init the HW, so + * communication is already re-enabled at this point. + */ + return __uc_resume(uc, false); +} + +int intel_uc_runtime_resume(struct intel_uc *uc) +{ + /* + * During runtime resume we don't sanitize, so we need to re-init + * communication as well. + */ + return __uc_resume(uc, true); +} diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.h b/drivers/gpu/drm/i915/gt/uc/intel_uc.h index fe3362fd7706..25da51e95417 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.h @@ -47,6 +47,7 @@ void intel_uc_reset_prepare(struct intel_uc *uc); void intel_uc_suspend(struct intel_uc *uc); void intel_uc_runtime_suspend(struct intel_uc *uc); int intel_uc_resume(struct intel_uc *uc); +int intel_uc_runtime_resume(struct intel_uc *uc); static inline bool intel_uc_is_using_guc(struct intel_uc *uc) { diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 7d0813150146..08c5504e040c 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -2950,7 +2950,7 @@ static int intel_runtime_suspend(struct device *kdev) intel_runtime_pm_enable_interrupts(dev_priv); - intel_uc_resume(&dev_priv->gt.uc); + intel_uc_runtime_resume(&dev_priv->gt.uc); intel_gt_init_swizzling(&dev_priv->gt); i915_gem_restore_fences(dev_priv); @@ -3047,7 +3047,7 @@ static int intel_runtime_resume(struct device *kdev) intel_runtime_pm_enable_interrupts(dev_priv); - intel_uc_resume(&dev_priv->gt.uc); + intel_uc_runtime_resume(&dev_priv->gt.uc); /* * No point of rolling back things in case of an error, as the best |