drm/xe: Move VRAM manager to struct xe_vram_region

VRAM manager is related directly to struct xe_vram_region so it
should be inside this structure.
Let's move the VRAM to struct xe_vram_region.

v2:
 - remove xe_vram_region pointer from xe_ttm_vram_mgr
 - stop use dynamic alloaction for xe_ttm_vram_mgr in xe_vram_region
 - rename struct xe_ttm_vram_mgr vram_mgr to ttm
v3:
 - fix "'ttm' not described in 'xe_vram_region'"

Signed-off-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@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/20250210081511.906452-3-piotr.piorkowski@intel.com

Author: piorkov

drivers/gpu/drm/xe/xe_bo.c

@@ -147,10 +147,13 @@ 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;
+	struct xe_ttm_vram_mgr *vram_mgr;
 
 	xe_assert(xe, resource_is_vram(res));
 	mgr = ttm_manager_type(&xe->ttm, res->mem_type);
-	return to_xe_ttm_vram_mgr(mgr)->vram;
+	vram_mgr = to_xe_ttm_vram_mgr(mgr);
+
+	return container_of(vram_mgr, struct xe_vram_region, ttm);
 }
 
 static void try_add_system(struct xe_device *xe, struct xe_bo *bo,
@@ -179,12 +182,15 @@ 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 ttm_resource_manager *mgr = ttm_manager_type(&xe->ttm, mem_type);
+	struct xe_ttm_vram_mgr *vram_mgr = to_xe_ttm_vram_mgr(mgr);
+
 	struct xe_vram_region *vram;
 	u64 io_size;
 
 	xe_assert(xe, *c < ARRAY_SIZE(bo->placements));
 
-	vram = to_xe_ttm_vram_mgr(ttm_manager_type(&xe->ttm, mem_type))->vram;
+	vram = container_of(vram_mgr, struct xe_vram_region, ttm);
 	xe_assert(xe, vram && vram->usable_size);
 	io_size = vram->io_size;
 

drivers/gpu/drm/xe/xe_device_types.h

@@ -23,6 +23,7 @@
 #include "xe_sriov_types.h"
 #include "xe_step_types.h"
 #include "xe_survivability_mode_types.h"
+#include "xe_ttm_vram_mgr_types.h"
 
 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
 #define TEST_VM_OPS_ERROR
@@ -105,6 +106,8 @@ struct xe_vram_region {
 	resource_size_t actual_physical_size;
 	/** @mapping: pointer to VRAM mappable space */
 	void __iomem *mapping;
+	/** @ttm: VRAM TTM manager */
+	struct xe_ttm_vram_mgr ttm;
 };
 
 /**
@@ -199,9 +202,6 @@ struct xe_tile {
 		 */
 		struct xe_vram_region vram;
 
-		/** @mem.vram_mgr: VRAM TTM manager */
-		struct xe_ttm_vram_mgr *vram_mgr;
-
 		/** @mem.ggtt: Global graphics translation table */
 		struct xe_ggtt *ggtt;
 

drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c

@@ -1564,7 +1564,7 @@ static u64 pf_query_free_lmem(struct xe_gt *gt)
 {
 	struct xe_tile *tile = gt->tile;
 
-	return xe_ttm_vram_get_avail(&tile->mem.vram_mgr->manager);
+	return xe_ttm_vram_get_avail(&tile->mem.vram.ttm.manager);
 }
 
 static u64 pf_query_max_lmem(struct xe_gt *gt)

drivers/gpu/drm/xe/xe_tile.c

@@ -94,10 +94,6 @@ static int xe_tile_alloc(struct xe_tile *tile)
 		return -ENOMEM;
 	tile->mem.ggtt->tile = tile;
 
-	tile->mem.vram_mgr = drmm_kzalloc(drm, sizeof(*tile->mem.vram_mgr), GFP_KERNEL);
-	if (!tile->mem.vram_mgr)
-		return -ENOMEM;
-
 	return 0;
 }
 
@@ -139,7 +135,7 @@ static int tile_ttm_mgr_init(struct xe_tile *tile)
 	int err;
 
 	if (tile->mem.vram.usable_size) {
-		err = xe_ttm_vram_mgr_init(tile, tile->mem.vram_mgr);
+		err = xe_ttm_vram_mgr_init(tile, &tile->mem.vram.ttm);
 		if (err)
 			return err;
 		xe->info.mem_region_mask |= BIT(tile->id) << 1;

drivers/gpu/drm/xe/xe_ttm_vram_mgr.c

@@ -342,7 +342,6 @@ 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_vram_region *vram = &tile->mem.vram;
 
-	mgr->vram = vram;
 	return __xe_ttm_vram_mgr_init(xe, mgr, XE_PL_VRAM0 + tile->id,
 				      vram->usable_size, vram->io_size,
 				      PAGE_SIZE);

drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h

@@ -9,8 +9,6 @@
 #include <drm/drm_buddy.h>
 #include <drm/ttm/ttm_device.h>
 
-struct xe_vram_region;
-
 /**
  * struct xe_ttm_vram_mgr - XE TTM VRAM manager
  *
@@ -21,8 +19,6 @@ struct xe_ttm_vram_mgr {
 	struct ttm_resource_manager manager;
 	/** @mm: DRM buddy allocator which manages the VRAM */
 	struct drm_buddy mm;
-	/** @vram: ptr to details of associated VRAM region */
-	struct xe_vram_region *vram;
 	/** @visible_size: Proped size of the CPU visible portion */
 	u64 visible_size;
 	/** @visible_avail: CPU visible portion still unallocated */