kernel/linux.git/include/uapi/drm/msm_drm.h, branch v6.19.11

drm/msm: Add VM_BIND ioctl

2025-07-05T00:48:38+00:00

Add a VM_BIND ioctl for binding/unbinding buffers into a VM. This is only supported if userspace has opted in to MSM_PARAM_EN_VM_BIND. Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661524/

drm/msm: Add VM_BIND submitqueue

2025-07-05T00:48:37+00:00

This submitqueue type isn't tied to a hw ringbuffer, but instead executes on the CPU for performing async VM_BIND ops. Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661517/

drm/msm: Extract out syncobj helpers

2025-07-05T00:48:37+00:00

We'll be re-using these for the VM_BIND ioctl. Also, rename a few things in the uapi header to reflect that syncobj use is not specific to the submit ioctl. Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661512/

drm/msm: Add _NO_SHARE flag

2025-07-05T00:48:36+00:00

Buffers that are not shared between contexts can share a single resv object. This way drm_gpuvm will not track them as external objects, and submit-time validating overhead will be O(1) for all N non-shared BOs, instead of O(n). Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661497/

drm/msm: Add opt-in for VM_BIND

2025-07-05T00:48:36+00:00

Add a SET_PARAM for userspace to request to manage to the VM itself, instead of getting a kernel managed VM. In order to transition to a userspace managed VM, this param must be set before any mappings are created. Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661494/

drm/msm: Add PRR support

2025-07-05T00:48:35+00:00

Add PRR (Partial Resident Region) is a bypass address which make GPU writes go to /dev/null and reads return zero. This is used to implement vulkan sparse residency. To support PRR/NULL mappings, we allocate a page to reserve a physical address which we know will not be used as part of a GEM object, and configure the SMMU to use this address for PRR/NULL mappings. Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661486/

drm/msm: Expose uche trap base via uapi

2025-01-03T15:20:27+00:00

This adds MSM_PARAM_UCHE_TRAP_BASE that will be used by Mesa implementation for VK_KHR_shader_clock and GL_ARB_shader_clock. Signed-off-by: Danylo Piliaiev Patchwork: https://patchwork.freedesktop.org/patch/627036/ Signed-off-by: Rob Clark

drm/msm/a6xx: Add a flag to allow preemption to submitqueue_create

2024-10-03T20:21:52+00:00

Some userspace changes are necessary so add a flag for userspace to advertise support for preemption when creating the submitqueue. When this flag is not set preemption will not be allowed in the middle of the submitted IBs therefore mantaining compatibility with older userspace. The flag is rejected if preemption is not supported on the target, this allows userspace to know whether preemption is supported. Tested-by: Rob Clark Tested-by: Neil Armstrong # on SM8650-QRD Tested-by: Neil Armstrong # on SM8550-QRD Tested-by: Neil Armstrong # on SM8450-HDK Signed-off-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/618028/ Signed-off-by: Rob Clark

drm/msm: Expose expanded UBWC config uapi

2024-08-30T17:41:19+00:00

This adds extra parameters that affect UBWC tiling that will be used by the Mesa implementation of VK_EXT_host_image_copy. Signed-off-by: Connor Abbott Patchwork: https://patchwork.freedesktop.org/patch/607401/ Signed-off-by: Rob Clark

drm/msm: Add MSM_PARAM_RAYTRACING uapi

2024-06-21T20:41:43+00:00

Expose the value of the software fuse to userspace. Reviewed-by: Konrad Dybcio Reviewed-by: Dmitry Baryshkov Signed-off-by: Connor Abbott Patchwork: https://patchwork.freedesktop.org/patch/592044/ Signed-off-by: Rob Clark