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()
126 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_dma_buf_begin_cpu_access()  local
129 	mutex_lock(&buffer->lock);  in cma_heap_dma_buf_begin_cpu_access()
131 	if (buffer->vmap_cnt)  in cma_heap_dma_buf_begin_cpu_access()
132 		invalidate_kernel_vmap_range(buffer->vaddr, buffer->len);  in cma_heap_dma_buf_begin_cpu_access()
134 	list_for_each_entry(a, &buffer->attachments, list) {  in cma_heap_dma_buf_begin_cpu_access()
139 	mutex_unlock(&buffer->lock);  in cma_heap_dma_buf_begin_cpu_access()
147 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_dma_buf_end_cpu_access()  local
150 	mutex_lock(&buffer->lock);  in cma_heap_dma_buf_end_cpu_access()
152 	if (buffer->vmap_cnt)  in cma_heap_dma_buf_end_cpu_access()
153 		flush_kernel_vmap_range(buffer->vaddr, buffer->len);  in cma_heap_dma_buf_end_cpu_access()
155 	list_for_each_entry(a, &buffer->attachments, list) {  in cma_heap_dma_buf_end_cpu_access()
160 	mutex_unlock(&buffer->lock);  in cma_heap_dma_buf_end_cpu_access()
168 	struct cma_heap_buffer *buffer = vma->vm_private_data;  in cma_heap_vm_fault()  local
170 	if (vmf->pgoff > buffer->pagecount)  in cma_heap_vm_fault()
173 	vmf->page = buffer->pages[vmf->pgoff];  in cma_heap_vm_fault()
185 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_mmap()  local
191 	vma->vm_private_data = buffer;  in cma_heap_mmap()
196 static void *cma_heap_do_vmap(struct cma_heap_buffer *buffer)  in cma_heap_do_vmap()  argument
200 	vaddr = vmap(buffer->pages, buffer->pagecount, VM_MAP, PAGE_KERNEL);  in cma_heap_do_vmap()
209 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_vmap()  local
213 	mutex_lock(&buffer->lock);  in cma_heap_vmap()
214 	if (buffer->vmap_cnt) {  in cma_heap_vmap()
215 		buffer->vmap_cnt++;  in cma_heap_vmap()
216 		iosys_map_set_vaddr(map, buffer->vaddr);  in cma_heap_vmap()
220 	vaddr = cma_heap_do_vmap(buffer);  in cma_heap_vmap()
225 	buffer->vaddr = vaddr;  in cma_heap_vmap()
226 	buffer->vmap_cnt++;  in cma_heap_vmap()
227 	iosys_map_set_vaddr(map, buffer->vaddr);  in cma_heap_vmap()
229 	mutex_unlock(&buffer->lock);  in cma_heap_vmap()
236 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_vunmap()  local
238 	mutex_lock(&buffer->lock);  in cma_heap_vunmap()
239 	if (!--buffer->vmap_cnt) {  in cma_heap_vunmap()
240 		vunmap(buffer->vaddr);  in cma_heap_vunmap()
241 		buffer->vaddr = NULL;  in cma_heap_vunmap()
243 	mutex_unlock(&buffer->lock);  in cma_heap_vunmap()
249 	struct cma_heap_buffer *buffer = dmabuf->priv;  in cma_heap_dma_buf_release()  local
250 	struct cma_heap *cma_heap = buffer->heap;  in cma_heap_dma_buf_release()
252 	if (buffer->vmap_cnt > 0) {  in cma_heap_dma_buf_release()
254 		vunmap(buffer->vaddr);  in cma_heap_dma_buf_release()
255 		buffer->vaddr = NULL;  in cma_heap_dma_buf_release()
259 	kfree(buffer->pages);  in cma_heap_dma_buf_release()
261 	cma_release(cma_heap->cma, buffer->cma_pages, buffer->pagecount);  in cma_heap_dma_buf_release()
262 	kfree(buffer);  in cma_heap_dma_buf_release()
284 	struct cma_heap_buffer *buffer;  in cma_heap_allocate()  local
294 	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in cma_heap_allocate()
295 	if (!buffer)  in cma_heap_allocate()
298 	INIT_LIST_HEAD(&buffer->attachments);  in cma_heap_allocate()
299 	mutex_init(&buffer->lock);  in cma_heap_allocate()
300 	buffer->len = size;  in cma_heap_allocate()
332 	buffer->pages = kmalloc_array(pagecount, sizeof(*buffer->pages), GFP_KERNEL);  in cma_heap_allocate()
333 	if (!buffer->pages) {  in cma_heap_allocate()
339 		buffer->pages[pg] = &cma_pages[pg];  in cma_heap_allocate()
341 	buffer->cma_pages = cma_pages;  in cma_heap_allocate()
342 	buffer->heap = cma_heap;  in cma_heap_allocate()
343 	buffer->pagecount = pagecount;  in cma_heap_allocate()
348 	exp_info.size = buffer->len;  in cma_heap_allocate()
350 	exp_info.priv = buffer;  in cma_heap_allocate()
359 	kfree(buffer->pages);  in cma_heap_allocate()
363 	kfree(buffer);  in cma_heap_allocate()