drm/i915: fix TLB invalidation for Gen12 video and compute engines

From Andrzej Hajda
ee2d04f23bbb16208045c3de545c6127aaa1ed0e in linux 5.15.y/5.15.81
04aa64375f48a5d430b5550d9271f8428883e550 in mainline linux

diff --git a/sys/dev/pci/drm/i915/gt/intel_gt.c b/sys/dev/pci/drm/i915/gt/intel_gt.c
index 810d138..a45dc6f 100644 (file)
--- a/sys/dev/pci/drm/i915/gt/intel_gt.c
+++ b/sys/dev/pci/drm/i915/gt/intel_gt.c
@@ -986,6 +986,10 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt)
                if (!i915_mmio_reg_offset(rb.reg))
                        continue;
 
+               if (GRAPHICS_VER(i915) == 12 && (engine->class == VIDEO_DECODE_CLASS ||
+                   engine->class == VIDEO_ENHANCEMENT_CLASS))
+                       rb.bit = _MASKED_BIT_ENABLE(rb.bit);
+
                intel_uncore_write_fw(uncore, rb.reg, rb.bit);
        }