From: Thierry Reding treding@nvidia.com
This series is a continuation of the work to move host1x and Tegra DRM towards being able to use the IOMMU-backed DMA API.
The first two patches are required to workaround the shortage of IOMMU domains on older Tegra SoC generations. The remainder of the patches is mostly preparatory work to smoothen the transition to the DMA API. With all of these patches applied, it's possible for the drivers to either use the IOMMU API explicitly, or, if already attached to an DMA IOMMU domain, continue to use that existing mapping with the DMA API.
These patches apply on top of linux-next and the ->load()/->unload() removal patch from here:
https://patchwork.freedesktop.org/patch/337896/
Thierry
Thierry Reding (12): memory: tegra: Add gr2d and gr3d to DRM IOMMU group drm/tegra: Simplify IOMMU group selection gpu: host1x: Overhaul host1x_bo_{pin,unpin}() API gpu: host1x: Clean up debugfs on removal gpu: host1x: Add direction flags to relocations gpu: host1x: Allocate gather copy for host1x gpu: host1x: Support DMA mapping of buffers gpu: host1x: Set DMA mask based on IOMMU setup drm/tegra: Remove memory allocation from Falcon library drm/tegra: falcon: Clarify address usage drm/tegra: Support DMA API for display controllers drm/tegra: Optionally attach clients to the IOMMU
drivers/gpu/drm/tegra/dc.c | 10 +- drivers/gpu/drm/tegra/drm.c | 82 ++++++++---- drivers/gpu/drm/tegra/drm.h | 4 +- drivers/gpu/drm/tegra/falcon.c | 64 ++------- drivers/gpu/drm/tegra/falcon.h | 16 +-- drivers/gpu/drm/tegra/gem.c | 46 ++++++- drivers/gpu/drm/tegra/gr2d.c | 2 +- drivers/gpu/drm/tegra/gr3d.c | 2 +- drivers/gpu/drm/tegra/hub.c | 6 +- drivers/gpu/drm/tegra/plane.c | 104 +++++++++++++++ drivers/gpu/drm/tegra/plane.h | 8 ++ drivers/gpu/drm/tegra/vic.c | 91 ++++++++----- drivers/gpu/host1x/dev.c | 223 +++++++++++++++++++------------- drivers/gpu/host1x/dev.h | 1 + drivers/gpu/host1x/job.c | 91 +++++++++++-- drivers/gpu/host1x/job.h | 4 + drivers/memory/tegra/tegra114.c | 10 +- drivers/memory/tegra/tegra124.c | 8 +- drivers/memory/tegra/tegra30.c | 11 +- include/linux/host1x.h | 21 ++- 20 files changed, 552 insertions(+), 252 deletions(-)