A framebuffer's offsets field might be non-zero to make the BO data start at the specified offset within the BO's memory. Handle this case in drm_gem_fb_vmap() and update all callers. So far, many drivers ignore the offsets, which can lead to visual artifacts.
Patch 1 adds an optional argument to drm_gem_fb_vmap() to return the offset-adjusted data address for use with shadow-buffered planes.
Patches 3 and 11 convert gud and vkms, which are the other callers of drm_gem_fb_vmap(). For gud, it's just a cleanup. Vkms will handle the framebuffer offsets correctly for its input and output framebuffers.
The other patches convert users of shadow-buffered planes to use the data address. After conversion, each driver will use the correct data for non-zero offsets.
Thomas Zimmermann (11): drm/gem: Provide offset-adjusted framebuffer BO mappings drm/ast: Use offset-adjusted shadow-plane mappings drm/gud: Get offset-adjusted mapping from drm_gem_fb_vmap() drm/hyperv: Use offset-adjusted shadow-plane mappings drm/mgag200: Use offset-adjusted shadow-plane mappings drm/cirrus: Use offset-adjusted shadow-plane mappings drm/gm12u320: Use offset-adjusted shadow-plane mappings drm/simpledrm: Use offset-adjusted shadow-plane mapping drm/udl: Use offset-adjusted shadow-plane mapping drm/vbox: Use offset-adjusted shadow-plane mappings drm/vkms: Use offset-adjusted shadow-plane mappings and output
drivers/gpu/drm/ast/ast_mode.c | 2 +- drivers/gpu/drm/drm_gem_atomic_helper.c | 2 +- drivers/gpu/drm/drm_gem_framebuffer_helper.c | 17 ++++++++++++++++- drivers/gpu/drm/gud/gud_pipe.c | 5 +++-- drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 4 ++-- drivers/gpu/drm/mgag200/mgag200_mode.c | 4 ++-- drivers/gpu/drm/tiny/cirrus.c | 4 ++-- drivers/gpu/drm/tiny/gm12u320.c | 4 ++-- drivers/gpu/drm/tiny/simpledrm.c | 4 ++-- drivers/gpu/drm/udl/udl_modeset.c | 4 ++-- drivers/gpu/drm/vboxvideo/vbox_mode.c | 2 +- drivers/gpu/drm/vkms/vkms_composer.c | 2 +- drivers/gpu/drm/vkms/vkms_drv.h | 1 + drivers/gpu/drm/vkms/vkms_plane.c | 2 +- drivers/gpu/drm/vkms/vkms_writeback.c | 2 +- include/drm/drm_gem_atomic_helper.h | 8 ++++++++ include/drm/drm_gem_framebuffer_helper.h | 3 ++- 17 files changed, 48 insertions(+), 22 deletions(-)
-- 2.32.0