LXR linux/drivers/gpu/drm/mediatek/mtk_drm

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (c) 2015 MediaTek Inc.
   4 */
   5
   6#ifndef _MTK_DRM_GEM_H_
   7#define _MTK_DRM_GEM_H_
   8
   9#include <drm/drm_gem.h>
  10
  11/*
  12 * mtk drm buffer structure.
  13 *
  14 * @base: a gem object.
  15 *      - a new handle to this gem object would be created
  16 *      by drm_gem_handle_create().
  17 * @cookie: the return value of dma_alloc_attrs(), keep it for dma_free_attrs()
  18 * @kvaddr: kernel virtual address of gem buffer.
  19 * @dma_addr: dma address of gem buffer.
  20 * @dma_attrs: dma attributes of gem buffer.
  21 *
  22 * P.S. this object would be transferred to user as kms_bo.handle so
  23 *      user can access the buffer through kms_bo.handle.
  24 */
  25struct mtk_drm_gem_obj {
  26        struct drm_gem_object   base;
  27        void                    *cookie;
  28        void                    *kvaddr;
  29        dma_addr_t              dma_addr;
  30        unsigned long           dma_attrs;
  31        struct sg_table         *sg;
  32        struct page             **pages;
  33};
  34
  35#define to_mtk_gem_obj(x)       container_of(x, struct mtk_drm_gem_obj, base)
  36
  37void mtk_drm_gem_free_object(struct drm_gem_object *gem);
  38struct mtk_drm_gem_obj *mtk_drm_gem_create(struct drm_device *dev, size_t size,
  39                                           bool alloc_kmap);
  40int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
  41                            struct drm_mode_create_dumb *args);
  42int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
  43int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj,
  44                         struct vm_area_struct *vma);
  45struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj);
  46struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev,
  47                        struct dma_buf_attachment *attach, struct sg_table *sg);
  48void *mtk_drm_gem_prime_vmap(struct drm_gem_object *obj);
  49void mtk_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
  50
  51#endif
  52