1 // SPDX-License-Identifier: GPL-2.0-only
18 	drm_mm_takedown(&aspace->mm);  in msm_gem_address_space_destroy()
19 	if (aspace->mmu)  in msm_gem_address_space_destroy()
20 		aspace->mmu->funcs->destroy(aspace->mmu);  in msm_gem_address_space_destroy()
21 	put_pid(aspace->pid);  in msm_gem_address_space_destroy()
29 		kref_put(&aspace->kref, msm_gem_address_space_destroy);  in msm_gem_address_space_put()
36 		kref_get(&aspace->kref);  in msm_gem_address_space_get()
41 /* Actually unmap memory for the vma */
44 	struct msm_gem_address_space *aspace = vma->aspace;  in msm_gem_vma_purge()
45 	unsigned size = vma->node.size;  in msm_gem_vma_purge()
47 	/* Don't do anything if the memory isn't mapped */  in msm_gem_vma_purge()
48 	if (!vma->mapped)  in msm_gem_vma_purge()
51 	aspace->mmu->funcs->unmap(aspace->mmu, vma->iova, size);  in msm_gem_vma_purge()
53 	vma->mapped = false;  in msm_gem_vma_purge()
61 	struct msm_gem_address_space *aspace = vma->aspace;  in msm_gem_vma_map()
64 	if (GEM_WARN_ON(!vma->iova))  in msm_gem_vma_map()
65 		return -EINVAL;  in msm_gem_vma_map()
67 	if (vma->mapped)  in msm_gem_vma_map()
70 	vma->mapped = true;  in msm_gem_vma_map()
76 	 * NOTE: iommu/io-pgtable can allocate pages, so we cannot hold  in msm_gem_vma_map()
81 	 * Revisit this if we can come up with a scheme to pre-alloc pages  in msm_gem_vma_map()
84 	ret = aspace->mmu->funcs->map(aspace->mmu, vma->iova, sgt, size, prot);  in msm_gem_vma_map()
87 		vma->mapped = false;  in msm_gem_vma_map()
96 	struct msm_gem_address_space *aspace = vma->aspace;  in msm_gem_vma_close()
98 	GEM_WARN_ON(vma->mapped);  in msm_gem_vma_close()
100 	spin_lock(&aspace->lock);  in msm_gem_vma_close()
101 	if (vma->iova)  in msm_gem_vma_close()
102 		drm_mm_remove_node(&vma->node);  in msm_gem_vma_close()
103 	spin_unlock(&aspace->lock);  in msm_gem_vma_close()
105 	vma->iova = 0;  in msm_gem_vma_close()
118 	vma->aspace = aspace;  in msm_gem_vma_new()
127 	struct msm_gem_address_space *aspace = vma->aspace;  in msm_gem_vma_init()
131 		return -EINVAL;  in msm_gem_vma_init()
133 	if (GEM_WARN_ON(vma->iova))  in msm_gem_vma_init()
134 		return -EBUSY;  in msm_gem_vma_init()
136 	spin_lock(&aspace->lock);  in msm_gem_vma_init()
137 	ret = drm_mm_insert_node_in_range(&aspace->mm, &vma->node,  in msm_gem_vma_init()
140 	spin_unlock(&aspace->lock);  in msm_gem_vma_init()
145 	vma->iova = vma->node.start;  in msm_gem_vma_init()
146 	vma->mapped = false;  in msm_gem_vma_init()
148 	kref_get(&aspace->kref);  in msm_gem_vma_init()
164 		return ERR_PTR(-ENOMEM);  in msm_gem_address_space_create()
166 	spin_lock_init(&aspace->lock);  in msm_gem_address_space_create()
167 	aspace->name = name;  in msm_gem_address_space_create()
168 	aspace->mmu = mmu;  in msm_gem_address_space_create()
169 	aspace->va_start = va_start;  in msm_gem_address_space_create()
170 	aspace->va_size  = size;  in msm_gem_address_space_create()
172 	drm_mm_init(&aspace->mm, va_start, size);  in msm_gem_address_space_create()
174 	kref_init(&aspace->kref);  in msm_gem_address_space_create()