path: root/drivers/gpu/drm/omapdrm/omap_gem.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
 * Author: Rob Clark <rob.clark@linaro.org>
 */

#include <linux/dma-mapping.h>
#include <linux/seq_file.h>
#include <linux/shmem_fs.h>
#include <linux/spinlock.h>
#include <linux/pfn_t.h>
#include <linux/vmalloc.h>

#include <drm/drm_prime.h>
#include <drm/drm_vma_manager.h>

#include "omap_drv.h"
#include "omap_dmm_tiler.h"

/*
 * GEM buffer object implementation.
 */

/* note: we use upper 8 bits of flags for driver-internal flags: */
#define OMAP_BO_MEM_DMA_API	0x01000000	/* memory allocated with the dma_alloc_* API */
#define OMAP_BO_MEM_SHMEM	0x02000000	/* memory allocated through shmem backing */
#define OMAP_BO_MEM_DMABUF	0x08000000	/* memory imported from a dmabuf */

struct omap_gem_object {
	struct drm_gem_object base;

	struct list_head mm_list;

	u32 flags;

	/** width/height for tiled formats (rounded up to slot boundaries) */
	u16 width