01.02.2019 16:28, Thierry Reding пишет: > From: Thierry Reding <treding@xxxxxxxxxx> > > Tegra186 and later are different from earlier generations in that they > use an ARM SMMU rather than the Tegra SMMU. The ARM SMMU driver behaves > slightly differently in that the geometry for IOMMU domains is set only > after a device was attached to it. This is to make sure that the SMMU > instance that the domain belongs to is known, because each instance can > have a different input address space (i.e. geometry). > > Work around this by moving all IOVA allocations to a point where the > geometry of the domain is properly initialized. > > This second version of the series addresses all review comments and adds > a number of patches that will actually allow host1x to work with an SMMU > enabled on Tegra186. The patches also add programming required to > address the full 40 bits of address space. > > The third version of the series fixes the 40-bit addressing code by > making sure that wide opcodes are always written atomically to the push > buffer. Another pair of patches are introduced to fix a long-standing > bug where the HOST1X_CHANNEL_DMAEND register wasn't properly programmed > and one push buffer memory optimization that avoid wasting almost one > full memory page per push buffer. > > This supersedes the following patch: > > https://patchwork.kernel.org/patch/10775579/ > > Thierry > > Thierry Reding (16): > gpu: host1x: Set up stream ID table > gpu: host1x: Program the channel stream ID > gpu: host1x: Introduce support for wide opcodes > gpu: host1x: Support 40-bit addressing > gpu: host1x: Use direct DMA with IOMMU API usage > gpu: host1x: Restrict IOVA space to DMA mask > gpu: host1x: Support 40-bit addressing on Tegra186 > gpu: host1x: Use correct semantics for HOST1X_CHANNEL_DMAEND > gpu: host1x: Optimize CDMA push buffer memory usage > drm/tegra: Store parent pointer in Tegra DRM clients > drm/tegra: vic: Load firmware on demand > drm/tegra: Setup shared IOMMU domain after initialization > drm/tegra: Restrict IOVA space to DMA mask > drm/tegra: vic: Do not clear driver data > drm/tegra: vic: Support stream ID register programming > arm64: tegra: Enable SMMU for VIC on Tegra186 > > arch/arm64/boot/dts/nvidia/tegra186.dtsi | 1 + > drivers/gpu/drm/tegra/drm.c | 57 +++++---- > drivers/gpu/drm/tegra/drm.h | 1 + > drivers/gpu/drm/tegra/vic.c | 75 ++++++++--- > drivers/gpu/drm/tegra/vic.h | 9 ++ > drivers/gpu/host1x/cdma.c | 132 ++++++++++++++++++-- > drivers/gpu/host1x/cdma.h | 2 + > drivers/gpu/host1x/dev.c | 49 +++++++- > drivers/gpu/host1x/dev.h | 8 ++ > drivers/gpu/host1x/hw/cdma_hw.c | 32 ++++- > drivers/gpu/host1x/hw/channel_hw.c | 42 ++++++- > drivers/gpu/host1x/hw/host1x06_hardware.h | 6 + > drivers/gpu/host1x/hw/host1x07_hardware.h | 6 + > drivers/gpu/host1x/hw/hw_host1x06_channel.h | 11 ++ > drivers/gpu/host1x/hw/hw_host1x07_channel.h | 11 ++ > include/trace/events/host1x.h | 26 ++++ > 16 files changed, 404 insertions(+), 64 deletions(-) > create mode 100644 drivers/gpu/host1x/hw/hw_host1x06_channel.h > create mode 100644 drivers/gpu/host1x/hw/hw_host1x07_channel.h > I gave a test to this series on T20 and T30. Opentegra works, grate tests work, glxgears are spinning.. everything working fine.
