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| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-10-16 13:52:00 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-10-17 13:59:16 +0200 |
| commit | 231927d939f073ffee24a5e7acb5b5621ba8b7c8 (patch) | |
| tree | 17f5e0eceee1eef90e8c8fce21b341a06814b4d5 | |
| parent | drm/ttm: rename ttm_fbdev_mmap (diff) | |
| download | linux-231927d939f073ffee24a5e7acb5b5621ba8b7c8.tar.xz linux-231927d939f073ffee24a5e7acb5b5621ba8b7c8.zip | |
drm/ttm: add drm_gem_ttm_mmap()
Add helper function to mmap ttm bo's using &drm_gem_object_funcs.mmap().
Note that with this code path access verification is done by
drm_gem_mmap() (which calls drm_vma_node_is_allowed(()).
The &ttm_bo_driver.verify_access() callback is is not used.
v3: use ttm_bo_mmap_obj instead of ttm_bo_mmap_vma_setup
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20191016115203.20095-9-kraxel@redhat.com
| -rw-r--r-- | drivers/gpu/drm/drm_gem_ttm_helper.c | 17 | ||||
| -rw-r--r-- | include/drm/drm_gem_ttm_helper.h | 2 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem_ttm_helper.c b/drivers/gpu/drm/drm_gem_ttm_helper.c index a534104d8bee..7412bfc5c05a 100644 --- a/drivers/gpu/drm/drm_gem_ttm_helper.c +++ b/drivers/gpu/drm/drm_gem_ttm_helper.c @@ -52,5 +52,22 @@ void drm_gem_ttm_print_info(struct drm_printer *p, unsigned int indent, } EXPORT_SYMBOL(drm_gem_ttm_print_info); +/** + * drm_gem_ttm_mmap() - mmap &ttm_buffer_object + * @gem: GEM object. + * @vma: vm area. + * + * This function can be used as &drm_gem_object_funcs.mmap + * callback. + */ +int drm_gem_ttm_mmap(struct drm_gem_object *gem, + struct vm_area_struct *vma) +{ + struct ttm_buffer_object *bo = drm_gem_ttm_of_gem(gem); + + return ttm_bo_mmap_obj(vma, bo); +} +EXPORT_SYMBOL(drm_gem_ttm_mmap); + MODULE_DESCRIPTION("DRM gem ttm helpers"); MODULE_LICENSE("GPL"); diff --git a/include/drm/drm_gem_ttm_helper.h b/include/drm/drm_gem_ttm_helper.h index 6268f89c5a48..118cef76f84f 100644 --- a/include/drm/drm_gem_ttm_helper.h +++ b/include/drm/drm_gem_ttm_helper.h @@ -15,5 +15,7 @@ void drm_gem_ttm_print_info(struct drm_printer *p, unsigned int indent, const struct drm_gem_object *gem); +int drm_gem_ttm_mmap(struct drm_gem_object *gem, + struct vm_area_struct *vma); #endif |