drm/xe: Rename struct xe_mem_region to struct xe_vram_region

The xe_mem_region structure has so far been used only in the context
of VRAM regions. Also, the description of its fields clearly indicates
that it was designed for VRAM regions. This struct is strictly related
only to VRAM.
So let's be clear on this point and rename it to xe_vram_region.

Signed-off-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250210081511.906452-2-piotr.piorkowski@intel.com

Author: piorkov

drivers/gpu/drm/xe/xe_bo.c

@@ -143,7 +143,7 @@ mem_type_to_migrate(struct xe_device *xe, u32 mem_type)
 	return tile->migrate;
 }
 
-static struct xe_mem_region *res_to_mem_region(struct ttm_resource *res)
+static struct xe_vram_region *res_to_mem_region(struct ttm_resource *res)
 {
 	struct xe_device *xe = ttm_to_xe_device(res->bo->bdev);
 	struct ttm_resource_manager *mgr;
@@ -179,7 +179,7 @@ static void add_vram(struct xe_device *xe, struct xe_bo *bo,
 		     struct ttm_place *places, u32 bo_flags, u32 mem_type, u32 *c)
 {
 	struct ttm_place place = { .mem_type = mem_type };
-	struct xe_mem_region *vram;
+	struct xe_vram_region *vram;
 	u64 io_size;
 
 	xe_assert(xe, *c < ARRAY_SIZE(bo->placements));
@@ -468,7 +468,7 @@ static int xe_ttm_io_mem_reserve(struct ttm_device *bdev,
 		return 0;
 	case XE_PL_VRAM0:
 	case XE_PL_VRAM1: {
-		struct xe_mem_region *vram = res_to_mem_region(mem);
+		struct xe_vram_region *vram = res_to_mem_region(mem);
 
 		if (!xe_ttm_resource_visible(mem))
 			return -EINVAL;
@@ -815,7 +815,7 @@ static int xe_bo_move(struct ttm_buffer_object *ttm_bo, bool evict,
 
 			/* Create a new VMAP once kernel BO back in VRAM */
 			if (!ret && resource_is_vram(new_mem)) {
-				struct xe_mem_region *vram = res_to_mem_region(new_mem);
+				struct xe_vram_region *vram = res_to_mem_region(new_mem);
 				void __iomem *new_addr = vram->mapping +
 					(new_mem->start << PAGE_SHIFT);
 
@@ -1025,7 +1025,7 @@ static unsigned long xe_ttm_io_mem_pfn(struct ttm_buffer_object *ttm_bo,
 {
 	struct xe_bo *bo = ttm_to_xe_bo(ttm_bo);
 	struct xe_res_cursor cursor;
-	struct xe_mem_region *vram;
+	struct xe_vram_region *vram;
 
 	if (ttm_bo->resource->mem_type == XE_PL_STOLEN)
 		return xe_ttm_stolen_io_offset(bo, page_offset << PAGE_SHIFT) >> PAGE_SHIFT;
@@ -1165,7 +1165,7 @@ static int xe_ttm_access_memory(struct ttm_buffer_object *ttm_bo,
 	struct xe_device *xe = ttm_to_xe_device(ttm_bo->bdev);
 	struct iosys_map vmap;
 	struct xe_res_cursor cursor;
-	struct xe_mem_region *vram;
+	struct xe_vram_region *vram;
 	int bytes_left = len;
 
 	xe_bo_assert_held(bo);

drivers/gpu/drm/xe/xe_device_types.h

@@ -70,11 +70,11 @@ struct xe_pxp;
 		 struct xe_tile * : (tile__)->xe)
 
 /**
- * struct xe_mem_region - memory region structure
+ * struct xe_vram_region - memory region structure
  * This is used to describe a memory region in xe
  * device, such as HBM memory or CXL extension memory.
  */
-struct xe_mem_region {
+struct xe_vram_region {
 	/** @io_start: IO start address of this VRAM instance */
 	resource_size_t io_start;
 	/**
@@ -197,7 +197,7 @@ struct xe_tile {
 		 * Although VRAM is associated with a specific tile, it can
 		 * still be accessed by all tiles' GTs.
 		 */
-		struct xe_mem_region vram;
+		struct xe_vram_region vram;
 
 		/** @mem.vram_mgr: VRAM TTM manager */
 		struct xe_ttm_vram_mgr *vram_mgr;
@@ -369,7 +369,7 @@ struct xe_device {
 	/** @mem: memory info for device */
 	struct {
 		/** @mem.vram: VRAM info for device */
-		struct xe_mem_region vram;
+		struct xe_vram_region vram;
 		/** @mem.sys_mgr: system TTM manager */
 		struct ttm_resource_manager sys_mgr;
 	} mem;

drivers/gpu/drm/xe/xe_ttm_vram_mgr.c

@@ -340,7 +340,7 @@ int __xe_ttm_vram_mgr_init(struct xe_device *xe, struct xe_ttm_vram_mgr *mgr,
 int xe_ttm_vram_mgr_init(struct xe_tile *tile, struct xe_ttm_vram_mgr *mgr)
 {
 	struct xe_device *xe = tile_to_xe(tile);
-	struct xe_mem_region *vram = &tile->mem.vram;
+	struct xe_vram_region *vram = &tile->mem.vram;
 
 	mgr->vram = vram;
 	return __xe_ttm_vram_mgr_init(xe, mgr, XE_PL_VRAM0 + tile->id,

drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h

@@ -9,7 +9,7 @@
 #include <drm/drm_buddy.h>
 #include <drm/ttm/ttm_device.h>
 
-struct xe_mem_region;
+struct xe_vram_region;
 
 /**
  * struct xe_ttm_vram_mgr - XE TTM VRAM manager
@@ -22,7 +22,7 @@ struct xe_ttm_vram_mgr {
 	/** @mm: DRM buddy allocator which manages the VRAM */
 	struct drm_buddy mm;
 	/** @vram: ptr to details of associated VRAM region */
-	struct xe_mem_region *vram;
+	struct xe_vram_region *vram;
 	/** @visible_size: Proped size of the CPU visible portion */
 	u64 visible_size;
 	/** @visible_avail: CPU visible portion still unallocated */