53 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_attach()  local
61 	ret = sg_alloc_table_from_pages(&a->table, buffer->pages,  in cma_heap_attach()
62 					buffer->pagecount, 0,  in cma_heap_attach()
63 					buffer->pagecount << PAGE_SHIFT,  in cma_heap_attach()
76 	mutex_lock(&buffer->lock);  in cma_heap_attach()
77 	list_add(&a->list, &buffer->attachments);  in cma_heap_attach()
78 	mutex_unlock(&buffer->lock);  in cma_heap_attach()
86 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_detach()  local
89 	mutex_lock(&buffer->lock);  in cma_heap_detach()
91 	mutex_unlock(&buffer->lock);  in cma_heap_detach()
124 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_dma_buf_begin_cpu_access()  local
127 	mutex_lock(&buffer->lock);  in cma_heap_dma_buf_begin_cpu_access()
129 	if (buffer->vmap_cnt)  in cma_heap_dma_buf_begin_cpu_access()
130 		invalidate_kernel_vmap_range(buffer->vaddr, buffer->len);  in cma_heap_dma_buf_begin_cpu_access()
132 	list_for_each_entry(a, &buffer->attachments, list) {  in cma_heap_dma_buf_begin_cpu_access()
137 	mutex_unlock(&buffer->lock);  in cma_heap_dma_buf_begin_cpu_access()
145 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_dma_buf_end_cpu_access()  local
148 	mutex_lock(&buffer->lock);  in cma_heap_dma_buf_end_cpu_access()
150 	if (buffer->vmap_cnt)  in cma_heap_dma_buf_end_cpu_access()
151 		flush_kernel_vmap_range(buffer->vaddr, buffer->len);  in cma_heap_dma_buf_end_cpu_access()
153 	list_for_each_entry(a, &buffer->attachments, list) {  in cma_heap_dma_buf_end_cpu_access()
158 	mutex_unlock(&buffer->lock);  in cma_heap_dma_buf_end_cpu_access()
166 	struct cma_heap_buffer *buffer = vma->vm_private_data;  in cma_heap_vm_fault()  local
168 	if (vmf->pgoff >= buffer->pagecount)  in cma_heap_vm_fault()
171 	vmf->page = buffer->pages[vmf->pgoff];  in cma_heap_vm_fault()
183 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_mmap()  local
189 	vma->vm_private_data = buffer;  in cma_heap_mmap()
194 static void *cma_heap_do_vmap(struct cma_heap_buffer *buffer)  in cma_heap_do_vmap()  argument
198 	vaddr = vmap(buffer->pages, buffer->pagecount, VM_MAP, PAGE_KERNEL);  in cma_heap_do_vmap()
207 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_vmap()  local
211 	mutex_lock(&buffer->lock);  in cma_heap_vmap()
212 	if (buffer->vmap_cnt) {  in cma_heap_vmap()
213 		buffer->vmap_cnt++;  in cma_heap_vmap()
214 		iosys_map_set_vaddr(map, buffer->vaddr);  in cma_heap_vmap()
218 	vaddr = cma_heap_do_vmap(buffer);  in cma_heap_vmap()
223 	buffer->vaddr = vaddr;  in cma_heap_vmap()
224 	buffer->vmap_cnt++;  in cma_heap_vmap()
225 	iosys_map_set_vaddr(map, buffer->vaddr);  in cma_heap_vmap()
227 	mutex_unlock(&buffer->lock);  in cma_heap_vmap()
234 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_vunmap()  local
236 	mutex_lock(&buffer->lock);  in cma_heap_vunmap()
237 	if (!--buffer->vmap_cnt) {  in cma_heap_vunmap()
238 		vunmap(buffer->vaddr);  in cma_heap_vunmap()
239 		buffer->vaddr = NULL;  in cma_heap_vunmap()
241 	mutex_unlock(&buffer->lock);  in cma_heap_vunmap()
247 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_dma_buf_release()  local
248 	struct cma_heap *cma_heap = buffer->heap;  in cma_heap_dma_buf_release()
250 	if (buffer->vmap_cnt > 0) {  in cma_heap_dma_buf_release()
251 		WARN(1, "%s: buffer still mapped in the kernel\n", __func__);  in cma_heap_dma_buf_release()
252 		vunmap(buffer->vaddr);  in cma_heap_dma_buf_release()
253 		buffer->vaddr = NULL;  in cma_heap_dma_buf_release()
257 	kfree(buffer->pages);  in cma_heap_dma_buf_release()
259 	cma_release(cma_heap->cma, buffer->cma_pages, buffer->pagecount);  in cma_heap_dma_buf_release()
260 	kfree(buffer);  in cma_heap_dma_buf_release()
282 	struct cma_heap_buffer *buffer;  in cma_heap_allocate()  local
292 	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in cma_heap_allocate()
293 	if (!buffer)  in cma_heap_allocate()
296 	INIT_LIST_HEAD(&buffer->attachments);  in cma_heap_allocate()
297 	mutex_init(&buffer->lock);  in cma_heap_allocate()
298 	buffer->len = size;  in cma_heap_allocate()
330 	buffer->pages = kmalloc_array(pagecount, sizeof(*buffer->pages), GFP_KERNEL);  in cma_heap_allocate()
331 	if (!buffer->pages) {  in cma_heap_allocate()
337 		buffer->pages[pg] = &cma_pages[pg];  in cma_heap_allocate()
339 	buffer->cma_pages = cma_pages;  in cma_heap_allocate()
340 	buffer->heap = cma_heap;  in cma_heap_allocate()
341 	buffer->pagecount = pagecount;  in cma_heap_allocate()
346 	exp_info.size = buffer->len;  in cma_heap_allocate()
348 	exp_info.priv = buffer;  in cma_heap_allocate()
357 	kfree(buffer->pages);  in cma_heap_allocate()
361 	kfree(buffer);  in cma_heap_allocate()