1 // SPDX-License-Identifier: GPL-2.0-only
17 	drm_mm_takedown(&aspace->mm);  in msm_gem_address_space_destroy()
18 	if (aspace->mmu)  in msm_gem_address_space_destroy()
19 		aspace->mmu->funcs->destroy(aspace->mmu);  in msm_gem_address_space_destroy()
20 	put_pid(aspace->pid);  in msm_gem_address_space_destroy()
28 		kref_put(&aspace->kref, msm_gem_address_space_destroy);  in msm_gem_address_space_put()
35 		kref_get(&aspace->kref);  in msm_gem_address_space_get()
40 /* Actually unmap memory for the vma */
44 	unsigned size = vma->node.size << PAGE_SHIFT;  in msm_gem_purge_vma()
47 	if (WARN_ON(vma->inuse > 0))  in msm_gem_purge_vma()
50 	/* Don't do anything if the memory isn't mapped */  in msm_gem_purge_vma()
51 	if (!vma->mapped)  in msm_gem_purge_vma()
54 	if (aspace->mmu)  in msm_gem_purge_vma()
55 		aspace->mmu->funcs->unmap(aspace->mmu, vma->iova, size);  in msm_gem_purge_vma()
57 	vma->mapped = false;  in msm_gem_purge_vma()
64 	if (!WARN_ON(!vma->iova))  in msm_gem_unmap_vma()
65 		vma->inuse--;  in msm_gem_unmap_vma()
76 	if (WARN_ON(!vma->iova))  in msm_gem_map_vma()
77 		return -EINVAL;  in msm_gem_map_vma()
80 	vma->inuse++;  in msm_gem_map_vma()
82 	if (vma->mapped)  in msm_gem_map_vma()
85 	vma->mapped = true;  in msm_gem_map_vma()
87 	if (aspace && aspace->mmu)  in msm_gem_map_vma()
88 		ret = aspace->mmu->funcs->map(aspace->mmu, vma->iova, sgt,  in msm_gem_map_vma()
92 		vma->mapped = false;  in msm_gem_map_vma()
93 		vma->inuse--;  in msm_gem_map_vma()
103 	if (WARN_ON(vma->inuse > 0 || vma->mapped))  in msm_gem_close_vma()
106 	spin_lock(&aspace->lock);  in msm_gem_close_vma()
107 	if (vma->iova)  in msm_gem_close_vma()
108 		drm_mm_remove_node(&vma->node);  in msm_gem_close_vma()
109 	spin_unlock(&aspace->lock);  in msm_gem_close_vma()
111 	vma->iova = 0;  in msm_gem_close_vma()
123 	if (WARN_ON(vma->iova))  in msm_gem_init_vma()
124 		return -EBUSY;  in msm_gem_init_vma()
126 	spin_lock(&aspace->lock);  in msm_gem_init_vma()
127 	ret = drm_mm_insert_node_in_range(&aspace->mm, &vma->node, npages, 0,  in msm_gem_init_vma()
129 	spin_unlock(&aspace->lock);  in msm_gem_init_vma()
134 	vma->iova = vma->node.start << PAGE_SHIFT;  in msm_gem_init_vma()
135 	vma->mapped = false;  in msm_gem_init_vma()
137 	kref_get(&aspace->kref);  in msm_gem_init_vma()
153 		return ERR_PTR(-ENOMEM);  in msm_gem_address_space_create()
155 	spin_lock_init(&aspace->lock);  in msm_gem_address_space_create()
156 	aspace->name = name;  in msm_gem_address_space_create()
157 	aspace->mmu = mmu;  in msm_gem_address_space_create()
159 	drm_mm_init(&aspace->mm, va_start >> PAGE_SHIFT, size >> PAGE_SHIFT);  in msm_gem_address_space_create()
161 	kref_init(&aspace->kref);  in msm_gem_address_space_create()