Merge tag 'drm-intel-fixes-2022-07-17' of git://anongit.freedesktop.org/drm/drm-intel

Pull intel drm build fix from Rodrigo Vivi:
 "Our 'dim' flow has a problem with fixes of fixes getting missed. We
  need to take a look on that later.

  Meanwhile, please allow me to quickly propagate this fix for the
  32-bit build issue here upstream"

* tag 'drm-intel-fixes-2022-07-17' of git://anongit.freedesktop.org/drm/drm-intel:
  drm/i915/ttm: fix 32b build

Author: torvalds

drivers/gpu/drm/i915/gem/i915_gem_region.c

@@ -60,6 +60,8 @@ __i915_gem_object_create_region(struct intel_memory_region *mem,
 	if (page_size)
 		default_page_size = page_size;
 
+	/* We should be able to fit a page within an sg entry */
+	GEM_BUG_ON(overflows_type(default_page_size, u32));
 	GEM_BUG_ON(!is_power_of_2_u64(default_page_size));
 	GEM_BUG_ON(default_page_size < PAGE_SIZE);
 

drivers/gpu/drm/i915/gem/i915_gem_ttm.c

@@ -620,7 +620,7 @@ i915_ttm_resource_get_st(struct drm_i915_gem_object *obj,
 			 struct ttm_resource *res)
 {
 	struct ttm_buffer_object *bo = i915_gem_to_ttm(obj);
-	u64 page_alignment;
+	u32 page_alignment;
 
 	if (!i915_ttm_gtt_binds_lmem(res))
 		return i915_ttm_tt_get_st(bo->ttm);

drivers/gpu/drm/i915/i915_scatterlist.c

@@ -79,10 +79,10 @@ void i915_refct_sgt_init(struct i915_refct_sgt *rsgt, size_t size)
  */
 struct i915_refct_sgt *i915_rsgt_from_mm_node(const struct drm_mm_node *node,
 					      u64 region_start,
-					      u64 page_alignment)
+					      u32 page_alignment)
 {
-	const u64 max_segment = round_down(UINT_MAX, page_alignment);
-	u64 segment_pages = max_segment >> PAGE_SHIFT;
+	const u32 max_segment = round_down(UINT_MAX, page_alignment);
+	const u32 segment_pages = max_segment >> PAGE_SHIFT;
 	u64 block_size, offset, prev_end;
 	struct i915_refct_sgt *rsgt;
 	struct sg_table *st;
@@ -96,7 +96,7 @@ struct i915_refct_sgt *i915_rsgt_from_mm_node(const struct drm_mm_node *node,
 
 	i915_refct_sgt_init(rsgt, node->size << PAGE_SHIFT);
 	st = &rsgt->table;
-	if (sg_alloc_table(st, DIV_ROUND_UP(node->size, segment_pages),
+	if (sg_alloc_table(st, DIV_ROUND_UP_ULL(node->size, segment_pages),
 			   GFP_KERNEL)) {
 		i915_refct_sgt_put(rsgt);
 		return ERR_PTR(-ENOMEM);
@@ -123,7 +123,7 @@ struct i915_refct_sgt *i915_rsgt_from_mm_node(const struct drm_mm_node *node,
 			st->nents++;
 		}
 
-		len = min(block_size, max_segment - sg->length);
+		len = min_t(u64, block_size, max_segment - sg->length);
 		sg->length += len;
 		sg_dma_len(sg) += len;
 
@@ -155,11 +155,11 @@ struct i915_refct_sgt *i915_rsgt_from_mm_node(const struct drm_mm_node *node,
  */
 struct i915_refct_sgt *i915_rsgt_from_buddy_resource(struct ttm_resource *res,
 						     u64 region_start,
-						     u64 page_alignment)
+						     u32 page_alignment)
 {
 	struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res);
 	const u64 size = res->num_pages << PAGE_SHIFT;
-	const u64 max_segment = round_down(UINT_MAX, page_alignment);
+	const u32 max_segment = round_down(UINT_MAX, page_alignment);
 	struct drm_buddy *mm = bman_res->mm;
 	struct list_head *blocks = &bman_res->blocks;
 	struct drm_buddy_block *block;
@@ -207,7 +207,7 @@ struct i915_refct_sgt *i915_rsgt_from_buddy_resource(struct ttm_resource *res,
 				st->nents++;
 			}
 
-			len = min(block_size, max_segment - sg->length);
+			len = min_t(u64, block_size, max_segment - sg->length);
 			sg->length += len;
 			sg_dma_len(sg) += len;
 

drivers/gpu/drm/i915/i915_scatterlist.h

@@ -214,10 +214,10 @@ void i915_refct_sgt_init(struct i915_refct_sgt *rsgt, size_t size);
 
 struct i915_refct_sgt *i915_rsgt_from_mm_node(const struct drm_mm_node *node,
 					      u64 region_start,
-					      u64 page_alignment);
+					      u32 page_alignment);
 
 struct i915_refct_sgt *i915_rsgt_from_buddy_resource(struct ttm_resource *res,
 						     u64 region_start,
-						     u64 page_alignment);
+						     u32 page_alignment);
 
 #endif

drivers/gpu/drm/i915/intel_region_ttm.c

@@ -163,7 +163,7 @@ int intel_region_ttm_fini(struct intel_memory_region *mem)
 struct i915_refct_sgt *
 intel_region_ttm_resource_to_rsgt(struct intel_memory_region *mem,
 				  struct ttm_resource *res,
-				  u64 page_alignment)
+				  u32 page_alignment)
 {
 	if (mem->is_range_manager) {
 		struct ttm_range_mgr_node *range_node =

drivers/gpu/drm/i915/intel_region_ttm.h

@@ -25,7 +25,7 @@ int intel_region_ttm_fini(struct intel_memory_region *mem);
 struct i915_refct_sgt *
 intel_region_ttm_resource_to_rsgt(struct intel_memory_region *mem,
 				  struct ttm_resource *res,
-				  u64 page_alignment);
+				  u32 page_alignment);
 
 void intel_region_ttm_resource_free(struct intel_memory_region *mem,
 				    struct ttm_resource *res);