186 static int set_schib(struct ccw_device *cdev, u32 mme, int mbfc,  in set_schib()  argument
191 	sch = to_subchannel(cdev->dev.parent);  in set_schib()
223 static int set_schib_wait(struct ccw_device *cdev, u32 mme,  in set_schib_wait()  argument
229 	spin_lock_irq(cdev->ccwlock);  in set_schib_wait()
230 	if (!cdev->private->cmb) {  in set_schib_wait()
245 	ret = set_schib(cdev, mme, mbfc, address);  in set_schib_wait()
249 	if (cdev->private->state != DEV_STATE_ONLINE) {  in set_schib_wait()
255 	cdev->private->state = DEV_STATE_CMFCHANGE;  in set_schib_wait()
257 	cdev->private->cmb_wait = set_data;  in set_schib_wait()
259 	spin_unlock_irq(cdev->ccwlock);  in set_schib_wait()
262 		spin_lock_irq(cdev->ccwlock);  in set_schib_wait()
265 			if (cdev->private->state == DEV_STATE_CMFCHANGE)  in set_schib_wait()
266 				cdev->private->state = DEV_STATE_ONLINE;  in set_schib_wait()
268 		spin_unlock_irq(cdev->ccwlock);  in set_schib_wait()
270 	spin_lock_irq(cdev->ccwlock);  in set_schib_wait()
271 	cdev->private->cmb_wait = NULL;  in set_schib_wait()
276 	spin_unlock_irq(cdev->ccwlock);  in set_schib_wait()
280 void retry_set_schib(struct ccw_device *cdev)  in retry_set_schib()  argument
284 	set_data = cdev->private->cmb_wait;  in retry_set_schib()
290 	set_data->ret = set_schib(cdev, set_data->mme, set_data->mbfc,  in retry_set_schib()
296 static int cmf_copy_block(struct ccw_device *cdev)  in cmf_copy_block()  argument
303 	sch = to_subchannel(cdev->dev.parent);  in cmf_copy_block()
316 	cmb_data = cdev->private->cmb;  in cmf_copy_block()
348 static int cmf_cmb_copy_wait(struct ccw_device *cdev)  in cmf_cmb_copy_wait()  argument
354 	spin_lock_irqsave(cdev->ccwlock, flags);  in cmf_cmb_copy_wait()
355 	if (!cdev->private->cmb) {  in cmf_cmb_copy_wait()
367 	ret = cmf_copy_block(cdev);  in cmf_cmb_copy_wait()
371 	if (cdev->private->state != DEV_STATE_ONLINE) {  in cmf_cmb_copy_wait()
376 	cdev->private->state = DEV_STATE_CMFUPDATE;  in cmf_cmb_copy_wait()
378 	cdev->private->cmb_wait = copy_block;  in cmf_cmb_copy_wait()
380 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in cmf_cmb_copy_wait()
383 		spin_lock_irqsave(cdev->ccwlock, flags);  in cmf_cmb_copy_wait()
386 			if (cdev->private->state == DEV_STATE_CMFUPDATE)  in cmf_cmb_copy_wait()
387 				cdev->private->state = DEV_STATE_ONLINE;  in cmf_cmb_copy_wait()
389 		spin_unlock_irqrestore(cdev->ccwlock, flags);  in cmf_cmb_copy_wait()
391 	spin_lock_irqsave(cdev->ccwlock, flags);  in cmf_cmb_copy_wait()
392 	cdev->private->cmb_wait = NULL;  in cmf_cmb_copy_wait()
397 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in cmf_cmb_copy_wait()
401 void cmf_retry_copy_block(struct ccw_device *cdev)  in cmf_retry_copy_block()  argument
405 	copy_block = cdev->private->cmb_wait;  in cmf_retry_copy_block()
411 	copy_block->ret = cmf_copy_block(cdev);  in cmf_retry_copy_block()
416 static void cmf_generic_reset(struct ccw_device *cdev)  in cmf_generic_reset()  argument
420 	spin_lock_irq(cdev->ccwlock);  in cmf_generic_reset()
421 	cmb_data = cdev->private->cmb;  in cmf_generic_reset()
431 	cdev->private->cmb_start_time = get_tod_clock();  in cmf_generic_reset()
432 	spin_unlock_irq(cdev->ccwlock);  in cmf_generic_reset()
503 static int alloc_cmb_single(struct ccw_device *cdev,  in alloc_cmb_single()  argument
510 	spin_lock_irq(cdev->ccwlock);  in alloc_cmb_single()
511 	if (!list_empty(&cdev->private->cmb_list)) {  in alloc_cmb_single()
535 	list_add_tail(&cdev->private->cmb_list, &node->cmb_list);  in alloc_cmb_single()
537 	cdev->private->cmb = cmb_data;  in alloc_cmb_single()
540 	spin_unlock_irq(cdev->ccwlock);  in alloc_cmb_single()
544 static int alloc_cmb(struct ccw_device *cdev)  in alloc_cmb()  argument
590 	ret = alloc_cmb_single(cdev, cmb_data);  in alloc_cmb()
600 static void free_cmb(struct ccw_device *cdev)  in free_cmb()  argument
606 	spin_lock_irq(cdev->ccwlock);  in free_cmb()
608 	priv = cdev->private;  in free_cmb()
630 	spin_unlock_irq(cdev->ccwlock);  in free_cmb()
634 static int set_cmb(struct ccw_device *cdev, u32 mme)  in set_cmb()  argument
640 	spin_lock_irqsave(cdev->ccwlock, flags);  in set_cmb()
641 	if (!cdev->private->cmb) {  in set_cmb()
642 		spin_unlock_irqrestore(cdev->ccwlock, flags);  in set_cmb()
645 	cmb_data = cdev->private->cmb;  in set_cmb()
647 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in set_cmb()
649 	return set_schib_wait(cdev, mme, 0, offset);  in set_cmb()
652 static u64 read_cmb(struct ccw_device *cdev, int index)  in read_cmb()  argument
659 	ret = cmf_cmb_copy_wait(cdev);  in read_cmb()
663 	spin_lock_irqsave(cdev->ccwlock, flags);  in read_cmb()
664 	if (!cdev->private->cmb) {  in read_cmb()
668 	cmb = ((struct cmb_data *)cdev->private->cmb)->last_block;  in read_cmb()
698 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in read_cmb()
702 static int readall_cmb(struct ccw_device *cdev, struct cmbdata *data)  in readall_cmb()  argument
710 	ret = cmf_cmb_copy_wait(cdev);  in readall_cmb()
713 	spin_lock_irqsave(cdev->ccwlock, flags);  in readall_cmb()
714 	cmb_data = cdev->private->cmb;  in readall_cmb()
724 	time = cmb_data->last_update - cdev->private->cmb_start_time;  in readall_cmb()
749 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in readall_cmb()
753 static void reset_cmb(struct ccw_device *cdev)  in reset_cmb()  argument
755 	cmf_generic_reset(cdev);  in reset_cmb()
822 static int alloc_cmbe(struct ccw_device *cdev)  in alloc_cmbe()  argument
842 	spin_lock_irq(cdev->ccwlock);  in alloc_cmbe()
843 	if (cdev->private->cmb) {  in alloc_cmbe()
844 		spin_unlock_irq(cdev->ccwlock);  in alloc_cmbe()
849 	cdev->private->cmb = cmb_data;  in alloc_cmbe()
850 	spin_unlock_irq(cdev->ccwlock);  in alloc_cmbe()
856 	list_add_tail(&cdev->private->cmb_list, &cmb_area.list);  in alloc_cmbe()
868 static void free_cmbe(struct ccw_device *cdev)  in free_cmbe()  argument
872 	spin_lock_irq(cdev->ccwlock);  in free_cmbe()
873 	cmb_data = cdev->private->cmb;  in free_cmbe()
874 	cdev->private->cmb = NULL;  in free_cmbe()
878 	spin_unlock_irq(cdev->ccwlock);  in free_cmbe()
882 	list_del_init(&cdev->private->cmb_list);  in free_cmbe()
888 static int set_cmbe(struct ccw_device *cdev, u32 mme)  in set_cmbe()  argument
894 	spin_lock_irqsave(cdev->ccwlock, flags);  in set_cmbe()
895 	if (!cdev->private->cmb) {  in set_cmbe()
896 		spin_unlock_irqrestore(cdev->ccwlock, flags);  in set_cmbe()
899 	cmb_data = cdev->private->cmb;  in set_cmbe()
901 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in set_cmbe()
903 	return set_schib_wait(cdev, mme, 1, mba);  in set_cmbe()
907 static u64 read_cmbe(struct ccw_device *cdev, int index)  in read_cmbe()  argument
915 	ret = cmf_cmb_copy_wait(cdev);  in read_cmbe()
919 	spin_lock_irqsave(cdev->ccwlock, flags);  in read_cmbe()
920 	cmb_data = cdev->private->cmb;  in read_cmbe()
961 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in read_cmbe()
965 static int readall_cmbe(struct ccw_device *cdev, struct cmbdata *data)  in readall_cmbe()  argument
973 	ret = cmf_cmb_copy_wait(cdev);  in readall_cmbe()
976 	spin_lock_irqsave(cdev->ccwlock, flags);  in readall_cmbe()
977 	cmb_data = cdev->private->cmb;  in readall_cmbe()
986 	time = cmb_data->last_update - cdev->private->cmb_start_time;  in readall_cmbe()
1016 	spin_unlock_irqrestore(cdev->ccwlock, flags);  in readall_cmbe()
1020 static void reset_cmbe(struct ccw_device *cdev)  in reset_cmbe()  argument
1022 	cmf_generic_reset(cdev);  in reset_cmbe()
1053 	struct ccw_device *cdev;  in cmb_show_avg_sample_interval()  local
1058 	cdev = to_ccwdev(dev);  in cmb_show_avg_sample_interval()
1059 	count = cmf_read(cdev, cmb_sample_count);  in cmb_show_avg_sample_interval()
1060 	spin_lock_irq(cdev->ccwlock);  in cmb_show_avg_sample_interval()
1061 	cmb_data = cdev->private->cmb;  in cmb_show_avg_sample_interval()
1064 			cdev->private->cmb_start_time;  in cmb_show_avg_sample_interval()
1069 	spin_unlock_irq(cdev->ccwlock);  in cmb_show_avg_sample_interval()
1181 	struct ccw_device *cdev;  in cmb_enable_store()  local
1189 	cdev = to_ccwdev(dev);  in cmb_enable_store()
1193 		ret = disable_cmf(cdev);  in cmb_enable_store()
1196 		ret = enable_cmf(cdev);  in cmb_enable_store()
1205 int ccw_set_cmf(struct ccw_device *cdev, int enable)  in ccw_set_cmf()  argument
1207 	return cmbops->set(cdev, enable ? 2 : 0);  in ccw_set_cmf()
1219 int enable_cmf(struct ccw_device *cdev)  in enable_cmf()  argument
1223 	ret = cmbops->alloc(cdev);  in enable_cmf()
1224 	cmbops->reset(cdev);  in enable_cmf()
1227 	ret = cmbops->set(cdev, 2);  in enable_cmf()
1229 		cmbops->free(cdev);  in enable_cmf()
1232 	ret = sysfs_create_group(&cdev->dev.kobj, cmbops->attr_group);  in enable_cmf()
1235 	cmbops->set(cdev, 0);  //FIXME: this can fail  in enable_cmf()
1236 	cmbops->free(cdev);  in enable_cmf()
1249 int disable_cmf(struct ccw_device *cdev)  in disable_cmf()  argument
1253 	ret = cmbops->set(cdev, 0);  in disable_cmf()
1256 	cmbops->free(cdev);  in disable_cmf()
1257 	sysfs_remove_group(&cdev->dev.kobj, cmbops->attr_group);  in disable_cmf()
1271 u64 cmf_read(struct ccw_device *cdev, int index)  in cmf_read()  argument
1273 	return cmbops->read(cdev, index);  in cmf_read()
1286 int cmf_readall(struct ccw_device *cdev, struct cmbdata *data)  in cmf_readall()  argument
1288 	return cmbops->readall(cdev, data);  in cmf_readall()
1292 int cmf_reenable(struct ccw_device *cdev)  in cmf_reenable()  argument
1294 	cmbops->reset(cdev);  in cmf_reenable()
1295 	return cmbops->set(cdev, 2);  in cmf_reenable()