50 static int tce_iommu_enable(struct tce_container *container)  in tce_iommu_enable()  argument
54 	struct iommu_table *tbl = container->tbl;  in tce_iommu_enable()
56 	if (!container->tbl)  in tce_iommu_enable()
62 	if (container->enabled)  in tce_iommu_enable()
94 		container->enabled = true;  in tce_iommu_enable()
101 static void tce_iommu_disable(struct tce_container *container)  in tce_iommu_disable()  argument
103 	if (!container->enabled)  in tce_iommu_disable()
106 	container->enabled = false;  in tce_iommu_disable()
108 	if (!container->tbl || !current->mm)  in tce_iommu_disable()
112 	current->mm->locked_vm -= (container->tbl->it_size <<  in tce_iommu_disable()
119 	struct tce_container *container;  in tce_iommu_open()  local
126 	container = kzalloc(sizeof(*container), GFP_KERNEL);  in tce_iommu_open()
127 	if (!container)  in tce_iommu_open()
130 	mutex_init(&container->lock);  in tce_iommu_open()
132 	return container;  in tce_iommu_open()
137 	struct tce_container *container = iommu_data;  in tce_iommu_release()  local
139 	WARN_ON(container->tbl && !container->tbl->it_group);  in tce_iommu_release()
140 	tce_iommu_disable(container);  in tce_iommu_release()
142 	if (container->tbl && container->tbl->it_group)  in tce_iommu_release()
143 		tce_iommu_detach_group(iommu_data, container->tbl->it_group);  in tce_iommu_release()
145 	mutex_destroy(&container->lock);  in tce_iommu_release()
147 	kfree(container);  in tce_iommu_release()
153 	struct tce_container *container = iommu_data;  in tce_iommu_ioctl()  local
172 		struct iommu_table *tbl = container->tbl;  in tce_iommu_ioctl()
197 		struct iommu_table *tbl = container->tbl;  in tce_iommu_ioctl()
250 		struct iommu_table *tbl = container->tbl;  in tce_iommu_ioctl()
284 		mutex_lock(&container->lock);  in tce_iommu_ioctl()
285 		ret = tce_iommu_enable(container);  in tce_iommu_ioctl()
286 		mutex_unlock(&container->lock);  in tce_iommu_ioctl()
291 		mutex_lock(&container->lock);  in tce_iommu_ioctl()
292 		tce_iommu_disable(container);  in tce_iommu_ioctl()
293 		mutex_unlock(&container->lock);  in tce_iommu_ioctl()
296 		if (!container->tbl || !container->tbl->it_group)  in tce_iommu_ioctl()
299 		return vfio_spapr_iommu_eeh_ioctl(container->tbl->it_group,  in tce_iommu_ioctl()
310 	struct tce_container *container = iommu_data;  in tce_iommu_attach_group()  local
314 	mutex_lock(&container->lock);  in tce_iommu_attach_group()
318 	if (container->tbl) {  in tce_iommu_attach_group()
320 				iommu_group_id(container->tbl->it_group),  in tce_iommu_attach_group()
323 	} else if (container->enabled) {  in tce_iommu_attach_group()
330 			container->tbl = tbl;  in tce_iommu_attach_group()
333 	mutex_unlock(&container->lock);  in tce_iommu_attach_group()
341 	struct tce_container *container = iommu_data;  in tce_iommu_detach_group()  local
345 	mutex_lock(&container->lock);  in tce_iommu_detach_group()
346 	if (tbl != container->tbl) {  in tce_iommu_detach_group()
351 		if (container->enabled) {  in tce_iommu_detach_group()
354 			tce_iommu_disable(container);  in tce_iommu_detach_group()
359 		container->tbl = NULL;  in tce_iommu_detach_group()
362 	mutex_unlock(&container->lock);  in tce_iommu_detach_group()