[Intel-gfx] [PATCH v3 3/4] drm/i915: Perform TLB invalidation on all GTs during suspend/resume

[Jonathan Cavitt]

Consider multi-gt support when cancelling all tlb invalidations on
suspend, and when submitting tlb invalidations on resume.

Suggested-by: Tvrtko Ursulin <tvrtko.ursu...@linux.intel.com>
Signed-off-by: Fei Yang <fei.y...@intel.com>
Signed-off-by: Jonathan Cavitt <jonathan.cav...@intel.com>
CC: John Harrison <john.c.harri...@intel.com>
---
 drivers/gpu/drm/i915/i915_driver.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_driver.c 
b/drivers/gpu/drm/i915/i915_driver.c
index f5175103ea900..d7655a7b60eda 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -1077,6 +1077,8 @@ static int i915_drm_suspend(struct drm_device *dev)
        struct drm_i915_private *dev_priv = to_i915(dev);
        struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
        pci_power_t opregion_target_state;
+       struct intel_gt *gt;
+       int i;
 
        disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
 
@@ -1094,7 +1096,8 @@ static int i915_drm_suspend(struct drm_device *dev)
 
        intel_runtime_pm_disable_interrupts(dev_priv);
 
-       wake_up_all_tlb_invalidate(&to_gt(dev_priv)->uc.guc);
+       for_each_gt(gt, dev_priv, i)
+               wake_up_all_tlb_invalidate(&gt->uc.guc);
 
        intel_hpd_cancel_work(dev_priv);
 
@@ -1267,9 +1270,11 @@ static int i915_drm_resume(struct drm_device *dev)
 
        intel_gvt_resume(dev_priv);
 
-       if (INTEL_GUC_SUPPORTS_TLB_INVALIDATION(&to_gt(dev_priv)->uc.guc)) {
-               intel_guc_invalidate_tlb_full(&to_gt(dev_priv)->uc.guc);
-               intel_guc_invalidate_tlb(&to_gt(dev_priv)->uc.guc);
+       for_each_gt(gt, dev_priv, i) {
+               if (!INTEL_GUC_SUPPORTS_TLB_INVALIDATION(&gt->uc.guc))
+                       continue;
+               intel_guc_invalidate_tlb_full(&gt->uc.guc);
+               intel_guc_invalidate_tlb(&gt->uc.guc);
        }
 
        enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
-- 
2.25.1