drivers/gpu/drm/msm/msm_gem_prime.c

   1 /*
   2  * Copyright (C) 2013 Red Hat
   3  * Author: Rob Clark <robdclark@gmail.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "msm_drv.h"
  19 #include "msm_gem.h"
  20
  21
  22 struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
  23 {
  24         struct msm_gem_object *msm_obj = to_msm_bo(obj);
  25         BUG_ON(!msm_obj->sgt);  /* should have already pinned! */
  26         return msm_obj->sgt;
  27 }
  28
  29 void *msm_gem_prime_vmap(struct drm_gem_object *obj)
  30 {
  31         return msm_gem_vaddr(obj);
  32 }
  33
  34 void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
  35 {
  36         /* TODO msm_gem_vunmap() */
  37 }
  38
  39 struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
  40                 size_t size, struct sg_table *sg)
  41 {
  42         return msm_gem_import(dev, size, sg);
  43 }
  44
  45 int msm_gem_prime_pin(struct drm_gem_object *obj)
  46 {
  47         if (!obj->import_attach)
  48                 msm_gem_get_pages(obj);
  49         return 0;
  50 }
  51
  52 void msm_gem_prime_unpin(struct drm_gem_object *obj)
  53 {
  54         if (!obj->import_attach)
  55                 msm_gem_put_pages(obj);
  56 }