The microcode in linux-firmware has been updated to 1.87.01 for a5xx 1.77.01 for a6xx [1]. These microcode versions support a new opcode called WHERE_AM_I that takes the place of the hardware RPTR shadow and enables the microcode to update the RPTR shadow in privileged memory so it is protected against the user. This patch series re-enables the RPTR shadow and preemption for a5xx and older versions of a6xx if the WHERE_AM_I opcode is available. Newer a6xx targets (starting with a650) have automatic privileged protection so the hardware RPTR shadow can be renabled for those targets too. If any of the needed dependencies aren't met then the RPTR shadow will remain disabled (along with preemption on 5xx). This stack is bsed on https://gitlab.freedesktop.org/drm/msm.git msm-next-pgtables as there are some minor dependencies on the reorganized code in the pgtable stack. Jordan [1] https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=f48fec44127f88ce83ea1bcaf5824de4146ca2f9 Jordan Crouse (3): drm/msm: Allow a5xx to mark the RPTR shadow as privileged drm/msm: a6xx: Use WHERE_AM_I for eligible targets drm/msm: Get rid of the REG_ADRENO offsets drivers/gpu/drm/msm/adreno/a2xx_gpu.c | 65 +++++++++--- drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 77 +++++++++++--- drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 82 +++++++++++---- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 108 ++++++++++++++++---- drivers/gpu/drm/msm/adreno/a5xx_gpu.h | 12 +++ drivers/gpu/drm/msm/adreno/a5xx_power.c | 2 +- drivers/gpu/drm/msm/adreno/a5xx_preempt.c | 5 +- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 100 +++++++++++++++--- drivers/gpu/drm/msm/adreno/a6xx_gpu.h | 9 ++ drivers/gpu/drm/msm/adreno/adreno_gpu.c | 81 +-------------- drivers/gpu/drm/msm/adreno/adreno_gpu.h | 81 +-------------- drivers/gpu/drm/msm/adreno/adreno_pm4.xml.h | 1 + drivers/gpu/drm/msm/msm_gpu.h | 1 + 13 files changed, 377 insertions(+), 247 deletions(-) -- 2.25.1
