drm/msm: add put_iova() helper
We'll need this too for shrinker/purging. Signed-off-by: Rob Clark <robdclark@gmail.com>
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4cd33c48ea
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4fe5f65e66
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@ -276,6 +276,26 @@ uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj)
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return offset;
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}
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static void
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put_iova(struct drm_gem_object *obj)
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{
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struct drm_device *dev = obj->dev;
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struct msm_drm_private *priv = obj->dev->dev_private;
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struct msm_gem_object *msm_obj = to_msm_bo(obj);
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int id;
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WARN_ON(!mutex_is_locked(&dev->struct_mutex));
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for (id = 0; id < ARRAY_SIZE(msm_obj->domain); id++) {
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struct msm_mmu *mmu = priv->mmus[id];
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if (mmu && msm_obj->domain[id].iova) {
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uint32_t offset = msm_obj->domain[id].iova;
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mmu->funcs->unmap(mmu, offset, msm_obj->sgt, obj->size);
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msm_obj->domain[id].iova = 0;
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}
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}
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}
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/* should be called under struct_mutex.. although it can be called
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* from atomic context without struct_mutex to acquire an extra
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* iova ref if you know one is already held.
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@ -608,9 +628,7 @@ void msm_gem_describe_objects(struct list_head *list, struct seq_file *m)
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void msm_gem_free_object(struct drm_gem_object *obj)
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{
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struct drm_device *dev = obj->dev;
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struct msm_drm_private *priv = obj->dev->dev_private;
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struct msm_gem_object *msm_obj = to_msm_bo(obj);
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int id;
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WARN_ON(!mutex_is_locked(&dev->struct_mutex));
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@ -619,13 +637,7 @@ void msm_gem_free_object(struct drm_gem_object *obj)
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list_del(&msm_obj->mm_list);
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for (id = 0; id < ARRAY_SIZE(msm_obj->domain); id++) {
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struct msm_mmu *mmu = priv->mmus[id];
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if (mmu && msm_obj->domain[id].iova) {
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uint32_t offset = msm_obj->domain[id].iova;
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mmu->funcs->unmap(mmu, offset, msm_obj->sgt, obj->size);
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}
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}
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put_iova(obj);
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if (obj->import_attach) {
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if (msm_obj->vaddr)
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