Driver Changes:

- Fix unlock on exec ioctl error path (Matthew Brost)
 - Fix hibernation on LNL due to ggtt getting lost
   (Matthew Brost / Matthew Auld)
 - Fix missing runtime PM in OA release (Ashutosh)
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Merge tag 'drm-xe-fixes-2024-11-14' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes

Driver Changes:
- Fix unlock on exec ioctl error path (Matthew Brost)
- Fix hibernation on LNL due to ggtt getting lost
  (Matthew Brost / Matthew Auld)
- Fix missing runtime PM in OA release (Ashutosh)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5ntcf2ssmmvo5dsf2mdcee4guwwmpbm3xrlufgt2pdfmznzjo3@62ygo3bxkock

drivers/gpu/drm/xe/xe_bo.c

@@ -886,8 +886,8 @@ int xe_bo_evict_pinned(struct xe_bo *bo)
 	if (WARN_ON(!xe_bo_is_pinned(bo)))
 		return -EINVAL;
 
-	if (WARN_ON(!xe_bo_is_vram(bo)))
+	if (!xe_bo_is_vram(bo))
-		return -EINVAL;
+		return 0;
 
 	ret = ttm_bo_mem_space(&bo->ttm, &placement, &new_mem, &ctx);
 	if (ret)
@@ -937,6 +937,7 @@ int xe_bo_restore_pinned(struct xe_bo *bo)
 		.interruptible = false,
 	};
 	struct ttm_resource *new_mem;
+	struct ttm_place *place = &bo->placements[0];
 	int ret;
 
 	xe_bo_assert_held(bo);
@@ -947,9 +948,15 @@ int xe_bo_restore_pinned(struct xe_bo *bo)
 	if (WARN_ON(!xe_bo_is_pinned(bo)))
 		return -EINVAL;
 
-	if (WARN_ON(xe_bo_is_vram(bo) || !bo->ttm.ttm))
+	if (WARN_ON(xe_bo_is_vram(bo)))
 		return -EINVAL;
 
+	if (WARN_ON(!bo->ttm.ttm && !xe_bo_is_stolen(bo)))
+		return -EINVAL;
+
+	if (!mem_type_is_vram(place->mem_type))
+		return 0;
+
 	ret = ttm_bo_mem_space(&bo->ttm, &bo->placement, &new_mem, &ctx);
 	if (ret)
 		return ret;
@@ -1719,6 +1726,7 @@ int xe_bo_pin_external(struct xe_bo *bo)
 
 int xe_bo_pin(struct xe_bo *bo)
 {
+	struct ttm_place *place = &bo->placements[0];
 	struct xe_device *xe = xe_bo_device(bo);
 	int err;
 
@@ -1749,21 +1757,21 @@ int xe_bo_pin(struct xe_bo *bo)
 	 */
 	if (IS_DGFX(xe) && !(IS_ENABLED(CONFIG_DRM_XE_DEBUG) &&
 	    bo->flags & XE_BO_FLAG_INTERNAL_TEST)) {
-		struct ttm_place *place = &(bo->placements[0]);
-
 		if (mem_type_is_vram(place->mem_type)) {
 			xe_assert(xe, place->flags & TTM_PL_FLAG_CONTIGUOUS);
 
 			place->fpfn = (xe_bo_addr(bo, 0, PAGE_SIZE) -
 				       vram_region_gpu_offset(bo->ttm.resource)) >> PAGE_SHIFT;
 			place->lpfn = place->fpfn + (bo->size >> PAGE_SHIFT);
-
-			spin_lock(&xe->pinned.lock);
-			list_add_tail(&bo->pinned_link, &xe->pinned.kernel_bo_present);
-			spin_unlock(&xe->pinned.lock);
 		}
 	}
 
+	if (mem_type_is_vram(place->mem_type) || bo->flags & XE_BO_FLAG_GGTT) {
+		spin_lock(&xe->pinned.lock);
+		list_add_tail(&bo->pinned_link, &xe->pinned.kernel_bo_present);
+		spin_unlock(&xe->pinned.lock);
+	}
+
 	ttm_bo_pin(&bo->ttm);
 
 	/*
@@ -1809,23 +1817,18 @@ void xe_bo_unpin_external(struct xe_bo *bo)
 
 void xe_bo_unpin(struct xe_bo *bo)
 {
+	struct ttm_place *place = &bo->placements[0];
 	struct xe_device *xe = xe_bo_device(bo);
 
 	xe_assert(xe, !bo->ttm.base.import_attach);
 	xe_assert(xe, xe_bo_is_pinned(bo));
 
-	if (IS_DGFX(xe) && !(IS_ENABLED(CONFIG_DRM_XE_DEBUG) &&
+	if (mem_type_is_vram(place->mem_type) || bo->flags & XE_BO_FLAG_GGTT) {
-	    bo->flags & XE_BO_FLAG_INTERNAL_TEST)) {
+		spin_lock(&xe->pinned.lock);
-		struct ttm_place *place = &(bo->placements[0]);
+		xe_assert(xe, !list_empty(&bo->pinned_link));
-
+		list_del_init(&bo->pinned_link);
-		if (mem_type_is_vram(place->mem_type)) {
+		spin_unlock(&xe->pinned.lock);
-			spin_lock(&xe->pinned.lock);
-			xe_assert(xe, !list_empty(&bo->pinned_link));
-			list_del_init(&bo->pinned_link);
-			spin_unlock(&xe->pinned.lock);
-		}
 	}
-
 	ttm_bo_unpin(&bo->ttm);
 }
 

drivers/gpu/drm/xe/xe_bo_evict.c

@@ -34,14 +34,22 @@ int xe_bo_evict_all(struct xe_device *xe)
 	u8 id;
 	int ret;
 
-	if (!IS_DGFX(xe))
-		return 0;
-
 	/* User memory */
-	for (mem_type = XE_PL_VRAM0; mem_type <= XE_PL_VRAM1; ++mem_type) {
+	for (mem_type = XE_PL_TT; mem_type <= XE_PL_VRAM1; ++mem_type) {
 		struct ttm_resource_manager *man =
 			ttm_manager_type(bdev, mem_type);
 
+		/*
+		 * On igpu platforms with flat CCS we need to ensure we save and restore any CCS
+		 * state since this state lives inside graphics stolen memory which doesn't survive
+		 * hibernation.
+		 *
+		 * This can be further improved by only evicting objects that we know have actually
+		 * used a compression enabled PAT index.
+		 */
+		if (mem_type == XE_PL_TT && (IS_DGFX(xe) || !xe_device_has_flat_ccs(xe)))
+			continue;
+
 		if (man) {
 			ret = ttm_resource_manager_evict_all(bdev, man);
 			if (ret)
@@ -125,9 +133,6 @@ int xe_bo_restore_kernel(struct xe_device *xe)
 	struct xe_bo *bo;
 	int ret;
 
-	if (!IS_DGFX(xe))
-		return 0;
-
 	spin_lock(&xe->pinned.lock);
 	for (;;) {
 		bo = list_first_entry_or_null(&xe->pinned.evicted,
@@ -159,7 +164,6 @@ int xe_bo_restore_kernel(struct xe_device *xe)
 		 * should setup the iosys map.
 		 */
 		xe_assert(xe, !iosys_map_is_null(&bo->vmap));
-		xe_assert(xe, xe_bo_is_vram(bo));
 
 		xe_bo_put(bo);
 

drivers/gpu/drm/xe/xe_exec.c

@@ -203,14 +203,14 @@ retry:
 		write_locked = false;
 	}
 	if (err)
-		goto err_syncs;
+		goto err_hw_exec_mode;
 
 	if (write_locked) {
 		err = xe_vm_userptr_pin(vm);
 		downgrade_write(&vm->lock);
 		write_locked = false;
 		if (err)
-			goto err_hw_exec_mode;
+			goto err_unlock_list;
 	}
 
 	if (!args->num_batch_buffer) {

drivers/gpu/drm/xe/xe_oa.c

@@ -1206,9 +1206,11 @@ static int xe_oa_release(struct inode *inode, struct file *file)
 	struct xe_oa_stream *stream = file->private_data;
 	struct xe_gt *gt = stream->gt;
 
+	xe_pm_runtime_get(gt_to_xe(gt));
 	mutex_lock(&gt->oa.gt_lock);
 	xe_oa_destroy_locked(stream);
 	mutex_unlock(&gt->oa.gt_lock);
+	xe_pm_runtime_put(gt_to_xe(gt));
 
 	/* Release the reference the OA stream kept on the driver */
 	drm_dev_put(&gt_to_xe(gt)->drm);