mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 17:36:20 +03:00
f0cbe19b12
Add User space API NVGPU_AS_IOCTL_GET_SYNC_RO_MAP to get read-only syncpoint address map in user space We already map whole syncpoint shim to each address space with base address being vm->syncpt_ro_map_gpu_va This new API exposes this base GPU_VA address of syncpoint map, and unit size of each syncpoint to user space. User space can then calculate address of each syncpoint as syncpoint_address = base_gpu_va + (syncpoint_id * syncpoint_unit_size) Note that this syncpoint address is read_only, and should be only used for inserting semaphore acquires. Adding semaphore release with this address would result in MMU_FAULT Define new HAL g->ops.fifo.get_sync_ro_map and set this for all GPUs supported on Xavier SoC Bug 200327559 Change-Id: Ica0db48fc28fdd0ff2a5eb09574dac843dc5e4fd Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1649365 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>