diff options
| author | Rob Clark <robin.clark@oss.qualcomm.com> | 2025-06-29 13:12:45 -0700 |
|---|---|---|
| committer | Rob Clark <robin.clark@oss.qualcomm.com> | 2025-07-04 11:09:43 -0700 |
| commit | 471920ce25d50bb39bfdaf3c3d9bc9dde30fa265 (patch) | |
| tree | 71d697d413515bad9030a40cc9a761bfce6282a0 /include/drm/drm_gpuvm.h | |
| parent | 9d712c50c30fface9b2a64251d9a7ac5fa7d3c4a (diff) | |
drm/gpuvm: Add locking helpers
For UNMAP/REMAP steps we could be needing to lock objects that are not
explicitly listed in the VM_BIND ioctl in order to tear-down unmapped
VAs. These helpers handle locking/preparing the needed objects.
Note that these functions do not strictly require the VM changes to be
applied before the next drm_gpuvm_sm_map_lock()/_unmap_lock() call. In
the case that VM changes from an earlier drm_gpuvm_sm_map()/_unmap()
call result in a differing sequence of steps when the VM changes are
actually applied, it will be the same set of GEM objects involved, so
the locking is still correct.
v2: Rename to drm_gpuvm_sm_*_exec_locked() [Danilo]
v3: Expand comments to show expected usage, and explain how the usage
is safe in the case of overlapping driver VM_BIND ops.
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Tested-by: Antonino Maniscalco <antomani103@gmail.com>
Reviewed-by: Antonino Maniscalco <antomani103@gmail.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/661458/
Diffstat (limited to 'include/drm/drm_gpuvm.h')
| -rw-r--r-- | include/drm/drm_gpuvm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/drm/drm_gpuvm.h b/include/drm/drm_gpuvm.h index 2a9629377633d..274532facfd62 100644 --- a/include/drm/drm_gpuvm.h +++ b/include/drm/drm_gpuvm.h @@ -1211,6 +1211,14 @@ int drm_gpuvm_sm_map(struct drm_gpuvm *gpuvm, void *priv, int drm_gpuvm_sm_unmap(struct drm_gpuvm *gpuvm, void *priv, u64 addr, u64 range); +int drm_gpuvm_sm_map_exec_lock(struct drm_gpuvm *gpuvm, + struct drm_exec *exec, unsigned int num_fences, + u64 req_addr, u64 req_range, + struct drm_gem_object *obj, u64 offset); + +int drm_gpuvm_sm_unmap_exec_lock(struct drm_gpuvm *gpuvm, struct drm_exec *exec, + u64 req_addr, u64 req_range); + void drm_gpuva_map(struct drm_gpuvm *gpuvm, struct drm_gpuva *va, struct drm_gpuva_op_map *op); |