From 231927d939f073ffee24a5e7acb5b5621ba8b7c8 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 16 Oct 2019 13:52:00 +0200 Subject: 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 Reviewed-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20191016115203.20095-9-kraxel@redhat.com --- drivers/gpu/drm/drm_gem_ttm_helper.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers/gpu/drm/drm_gem_ttm_helper.c') 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"); -- cgit v1.2.3