Merge tag 'drm-xe-fixes-2025-01-09' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes

Driver Changes:
- Avoid a NULL ptr deref when wedging (Lucas)
- Fix power gate sequence on DG1 (Rodrigo)

Signed-off-by: Dave Airlie <[email protected]>

From: Thomas Hellstrom <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/Z4AcqP3Io_r0pEsR@fedora

Author: airlied

drivers/gpu/drm/xe/xe_gt.c

@@ -387,6 +387,10 @@ int xe_gt_init_early(struct xe_gt *gt)
 	xe_force_wake_init_gt(gt, gt_to_fw(gt));
 	spin_lock_init(&gt->global_invl_lock);
 
+	err = xe_gt_tlb_invalidation_init_early(gt);
+	if (err)
+		return err;
+
 	return 0;
 }
 
@@ -588,10 +592,6 @@ int xe_gt_init(struct xe_gt *gt)
 		xe_hw_fence_irq_init(&gt->fence_irq[i]);
 	}
 
-	err = xe_gt_tlb_invalidation_init(gt);
-	if (err)
-		return err;
-
 	err = xe_gt_pagefault_init(gt);
 	if (err)
 		return err;

drivers/gpu/drm/xe/xe_gt_idle.c

@@ -122,10 +122,12 @@ void xe_gt_idle_enable_pg(struct xe_gt *gt)
 	if (!xe_gt_is_media_type(gt))
 		gtidle->powergate_enable |= RENDER_POWERGATE_ENABLE;
 
-	for (i = XE_HW_ENGINE_VCS0, j = 0; i <= XE_HW_ENGINE_VCS7; ++i, ++j) {
-		if ((gt->info.engine_mask & BIT(i)))
-			gtidle->powergate_enable |= (VDN_HCP_POWERGATE_ENABLE(j) |
-						     VDN_MFXVDENC_POWERGATE_ENABLE(j));
+	if (xe->info.platform != XE_DG1) {
+		for (i = XE_HW_ENGINE_VCS0, j = 0; i <= XE_HW_ENGINE_VCS7; ++i, ++j) {
+			if ((gt->info.engine_mask & BIT(i)))
+				gtidle->powergate_enable |= (VDN_HCP_POWERGATE_ENABLE(j) |
+							     VDN_MFXVDENC_POWERGATE_ENABLE(j));
+		}
 	}
 
 	fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT);

drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c

@@ -106,15 +106,15 @@ static void xe_gt_tlb_fence_timeout(struct work_struct *work)
 }
 
 /**
- * xe_gt_tlb_invalidation_init - Initialize GT TLB invalidation state
+ * xe_gt_tlb_invalidation_init_early - Initialize GT TLB invalidation state
  * @gt: graphics tile
  *
  * Initialize GT TLB invalidation state, purely software initialization, should
  * be called once during driver load.
  *
  * Return: 0 on success, negative error code on error.
  */
-int xe_gt_tlb_invalidation_init(struct xe_gt *gt)
+int xe_gt_tlb_invalidation_init_early(struct xe_gt *gt)
 {
 	gt->tlb_invalidation.seqno = 1;
 	INIT_LIST_HEAD(&gt->tlb_invalidation.pending_fences);

drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h

@@ -14,7 +14,8 @@ struct xe_gt;
 struct xe_guc;
 struct xe_vma;
 
-int xe_gt_tlb_invalidation_init(struct xe_gt *gt);
+int xe_gt_tlb_invalidation_init_early(struct xe_gt *gt);
+
 void xe_gt_tlb_invalidation_reset(struct xe_gt *gt);
 int xe_gt_tlb_invalidation_ggtt(struct xe_gt *gt);
 int xe_gt_tlb_invalidation_vma(struct xe_gt *gt,