On Thu, 25 Apr 2024 at 16:44, Connor Abbott <cwabbott0@xxxxxxxxx> wrote: > > On a750, Qualcomm decided to gate support for certain features behind a > "software fuse." This consists of a register in the cx_mem zone, which > is normally only writeable by the TrustZone firmware. On bootup it is > 0, and we must call an SCM method to initialize it. Then we communicate > its value to userspace. This implements all of this, copying the SCM > call from the downstream kernel and kgsl. > > So far the only optional feature we use is ray tracing (i.e. the > "ray_intersection" instruction) in a pending Mesa MR [1], so that's what > we expose to userspace. There's one extra patch to write some missing > registers, which depends on the register XML bump but is otherwise > unrelated, I just included it to make things easier on myself. > > The drm/msm part of this series depends on [2] to avoid conflicts. > > [1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28447 > [2] https://lore.kernel.org/all/20240324095222.ldnwumjkxk6uymmc@xxxxxxxxxxxxxxxxxxxxxxxxxxx/T/ > > Connor Abbott (6): > arm64: dts: qcom: sm8650: Fix GPU cx_mem size > firmware: qcom_scm: Add gpu_init_regs call I don't see patch 2 at all. Granted that patches 1 and 3-6 have different cc lists, might it be that it went to some blackhole? > drm/msm: Update a6xx registers > drm/msm/a7xx: Initialize a750 "software fuse" > drm/msm: Add MSM_PARAM_RAYTRACING uapi > drm/msm/a7xx: Add missing register writes from downstream -- With best wishes Dmitry
