linux/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2021-2022 Intel Corporation
 * Copyright (C) 2021-2002 Red Hat
 */

#include <drm/drm_managed.h>

#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_range_manager.h>

#include "xe_bo.h"
#include "xe_device.h"
#include "xe_gt.h"
#include "xe_res_cursor.h"
#include "xe_ttm_vram_mgr.h"

static inline struct drm_buddy_block *
xe_ttm_vram_mgr_first_block(struct list_head *list)
{ … }

static inline bool xe_is_vram_mgr_blocks_contiguous(struct drm_buddy *mm,
						    struct list_head *head)
{ … }

static int xe_ttm_vram_mgr_new(struct ttm_resource_manager *man,
			       struct ttm_buffer_object *tbo,
			       const struct ttm_place *place,
			       struct ttm_resource **res)
{ … }

static void xe_ttm_vram_mgr_del(struct ttm_resource_manager *man,
				struct ttm_resource *res)
{ … }

static void xe_ttm_vram_mgr_debug(struct ttm_resource_manager *man,
				  struct drm_printer *printer)
{ … }

static bool xe_ttm_vram_mgr_intersects(struct ttm_resource_manager *man,
				       struct ttm_resource *res,
				       const struct ttm_place *place,
				       size_t size)
{ … }

static bool xe_ttm_vram_mgr_compatible(struct ttm_resource_manager *man,
				       struct ttm_resource *res,
				       const struct ttm_place *place,
				       size_t size)
{ … }

static const struct ttm_resource_manager_func xe_ttm_vram_mgr_func = …;

static void ttm_vram_mgr_fini(struct drm_device *dev, void *arg)
{ … }

int __xe_ttm_vram_mgr_init(struct xe_device *xe, struct xe_ttm_vram_mgr *mgr,
			   u32 mem_type, u64 size, u64 io_size,
			   u64 default_page_size)
{ … }

int xe_ttm_vram_mgr_init(struct xe_tile *tile, struct xe_ttm_vram_mgr *mgr)
{ … }

int xe_ttm_vram_mgr_alloc_sgt(struct xe_device *xe,
			      struct ttm_resource *res,
			      u64 offset, u64 length,
			      struct device *dev,
			      enum dma_data_direction dir,
			      struct sg_table **sgt)
{ … }

void xe_ttm_vram_mgr_free_sgt(struct device *dev, enum dma_data_direction dir,
			      struct sg_table *sgt)
{ … }

u64 xe_ttm_vram_get_cpu_visible_size(struct ttm_resource_manager *man)
{ … }

void xe_ttm_vram_get_used(struct ttm_resource_manager *man,
			  u64 *used, u64 *used_visible)
{ … }

u64 xe_ttm_vram_get_avail(struct ttm_resource_manager *man)
{ … }