LXR linux/drivers/gpu/drm/lima/lima_gem

   1// SPDX-License-Identifier: GPL-2.0 OR MIT
   2/* Copyright 2018-2019 Qiang Yu <yuq825@gmail.com> */
   3
   4#include <linux/dma-buf.h>
   5#include <drm/drm_prime.h>
   6#include <drm/drm_drv.h>
   7#include <drm/drm_file.h>
   8
   9#include "lima_device.h"
  10#include "lima_object.h"
  11#include "lima_gem.h"
  12#include "lima_gem_prime.h"
  13
  14struct drm_gem_object *lima_gem_prime_import_sg_table(
  15        struct drm_device *dev, struct dma_buf_attachment *attach,
  16        struct sg_table *sgt)
  17{
  18        struct lima_device *ldev = to_lima_dev(dev);
  19        struct lima_bo *bo;
  20
  21        bo = lima_bo_create(ldev, attach->dmabuf->size, 0, sgt,
  22                            attach->dmabuf->resv);
  23        if (IS_ERR(bo))
  24                return ERR_CAST(bo);
  25
  26        return &bo->gem;
  27}
  28
  29struct sg_table *lima_gem_prime_get_sg_table(struct drm_gem_object *obj)
  30{
  31        struct lima_bo *bo = to_lima_bo(obj);
  32        int npages = obj->size >> PAGE_SHIFT;
  33
  34        return drm_prime_pages_to_sg(bo->pages, npages);
  35}
  36
  37int lima_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
  38{
  39        int ret;
  40
  41        ret = drm_gem_mmap_obj(obj, obj->size, vma);
  42        if (ret)
  43                return ret;
  44
  45        lima_set_vma_flags(vma);
  46        return 0;
  47}
  48