drivers/gpu/drm/rockchip/rockchip_drm_gem.h

   1 /*
   2  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
   3  * Author:Mark Yao <mark.yao@rock-chips.com>
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #ifndef _ROCKCHIP_DRM_GEM_H
  16 #define _ROCKCHIP_DRM_GEM_H
  17
  18 #define to_rockchip_obj(x) container_of(x, struct rockchip_gem_object, base)
  19
  20 struct rockchip_gem_object {
  21         struct drm_gem_object base;
  22         unsigned int flags;
  23
  24         void *kvaddr;
  25         dma_addr_t dma_addr;
  26         /* Used when IOMMU is disabled */
  27         unsigned long dma_attrs;
  28
  29         /* Used when IOMMU is enabled */
  30         struct drm_mm_node mm;
  31         unsigned long num_pages;
  32         struct page **pages;
  33         struct sg_table *sgt;
  34         size_t size;
  35 };
  36
  37 struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj);
  38 struct drm_gem_object *
  39 rockchip_gem_prime_import_sg_table(struct drm_device *dev,
  40                                    struct dma_buf_attachment *attach,
  41                                    struct sg_table *sg);
  42 void *rockchip_gem_prime_vmap(struct drm_gem_object *obj);
  43 void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
  44
  45 /* drm driver mmap file operations */
  46 int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma);
  47
  48 /* mmap a gem object to userspace. */
  49 int rockchip_gem_mmap_buf(struct drm_gem_object *obj,
  50                           struct vm_area_struct *vma);
  51
  52 struct rockchip_gem_object *
  53         rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
  54                                    bool alloc_kmap);
  55
  56 void rockchip_gem_free_object(struct drm_gem_object *obj);
  57
  58 int rockchip_gem_dumb_create(struct drm_file *file_priv,
  59                              struct drm_device *dev,
  60                              struct drm_mode_create_dumb *args);
  61 #endif /* _ROCKCHIP_DRM_GEM_H */