Commit 41068c8b authored by Simon Ser's avatar Simon Ser
Browse files

drm/vram-helper: turn on PRIME import/export 



We don't populate drm_driver.gem_prime_import_sg_table so only
DMA-BUFs exported from our own device can be imported. We don't
populate drm_gem_object_funcs.get_sg_table so DMA-BUFs cannot be
imported into another device. Still, this is useful to user-space
to share buffers between processes and between API boundaries
(e.g. wlroots hard-requires PRIME import/export support).

v2: expand commit message

Signed-off-by: default avatarSimon Ser <contact@emersion.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tian Tao <tiantao6@hisilicon.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230302143502.500661-2-contact@emersion.fr
parent 207395da

include/drm/drm_gem_vram_helper.h

+3 −1
Original line number Diff line number Diff line
@@ -160,7 +160,9 @@ void drm_gem_vram_simple_display_pipe_cleanup_fb( 
	.debugfs_init             = drm_vram_mm_debugfs_init, \

	.dumb_create		  = drm_gem_vram_driver_dumb_create, \

	.dumb_map_offset	  = drm_gem_ttm_dumb_map_offset, \

	.gem_prime_mmap		  = drm_gem_prime_mmap

	.gem_prime_mmap		  = drm_gem_prime_mmap, \

	.prime_handle_to_fd	  = drm_gem_prime_handle_to_fd, \

	.prime_fd_to_handle	  = drm_gem_prime_fd_to_handle



/*

 *  VRAM memory manager