On Tue, Jul 27, 2021 at 8:11 PM Ryan Taylor <Ryan.Taylor@xxxxxxx> wrote: > > The amdgpu vkms interface provides a virtual KMS interface for several use > cases: devices without display hardware, platforms where the actual display > hardware is not useful (e.g., servers), SR-IOV virtual functions, device > emulation/simulation, and device bring up prior to display hardware being > usable. We previously emulated a legacy KMS interface, but there was a desire > to move to the atomic KMS interface. The vkms driver did everything we > needed, but we wanted KMS support natively in the driver without buffer > sharing and the ability to support an instance of VKMS per device. We first > looked at splitting vkms into a stub driver and a helper module that other > drivers could use to implement a virtual display, but this strategy ended up > being messy due to driver specific callbacks needed for buffer management. > Ultimately, it proved easier to import the vkms code as it mostly used core > drm helpers anyway. Series is: Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx> > > Ryan Taylor (3): > drm/amdgpu: create amdgpu_vkms (v4) > drm/amdgpu: cleanup dce_virtual > drm/amdgpu: replace dce_virtual with amdgpu_vkms (v3) > > drivers/gpu/drm/amd/amdgpu/Makefile | 2 +- > drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + > drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +- > drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 2 +- > drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c | 641 +++++++++++++++++++ > drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.h | 26 + > drivers/gpu/drm/amd/amdgpu/cik.c | 10 +- > drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 780 ----------------------- > drivers/gpu/drm/amd/amdgpu/dce_virtual.h | 30 - > drivers/gpu/drm/amd/amdgpu/nv.c | 22 +- > drivers/gpu/drm/amd/amdgpu/si.c | 8 +- > drivers/gpu/drm/amd/amdgpu/soc15.c | 10 +- > drivers/gpu/drm/amd/amdgpu/vi.c | 14 +- > 13 files changed, 703 insertions(+), 845 deletions(-) > create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c > create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.h > delete mode 100644 drivers/gpu/drm/amd/amdgpu/dce_virtual.c > delete mode 100644 drivers/gpu/drm/amd/amdgpu/dce_virtual.h > > > base-commit: e0186426a7efeb506164da7d4a56cfdaea38b380 > -- > 2.32.0 > > _______________________________________________ > amd-gfx mailing list > amd-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
