52 	struct dasd_copy_relation *copy;  member
605 		dev_warn(&device->cdev->dev, "Unable to query copy relation status\n");  in dasd_devmap_get_pprc_status()
614 		dev_warn(&device->cdev->dev, "Error during copy relation status query\n");  in dasd_devmap_get_pprc_status()
649  * check the consistency of a specified copy relation by checking
652  *   - is the given device part of a copy pair setup
661 					   struct dasd_copy_relation *copy)  in dasd_devmap_check_copy_relation()  argument
674 		dev_warn(&device->cdev->dev, "Device not part of a copy relation\n");  in dasd_devmap_check_copy_relation()
681 			dev_warn(&device->cdev->dev, "Copy pair secondary is setup as primary\n");  in dasd_devmap_check_copy_relation()
687 				 "Primary device %s does not match copy pair status primary device %04x\n",  in dasd_devmap_check_copy_relation()
695 			dev_warn(&device->cdev->dev, "Copy pair primary is setup as secondary\n");  in dasd_devmap_check_copy_relation()
701 				 "Secondary device %s does not match copy pair status secondary device %04x\n",  in dasd_devmap_check_copy_relation()
710 	 * the current device has to be part of the copy relation of all  in dasd_devmap_check_copy_relation()
711 	 * entries to prevent misrouted IO to another copy pair  in dasd_devmap_check_copy_relation()
714 		if (entry == &copy->entry[j])  in dasd_devmap_check_copy_relation()
717 			tmp_dev = copy->entry[j].device;  in dasd_devmap_check_copy_relation()
727 				 "Copy pair relation does not contain device: %s\n",  in dasd_devmap_check_copy_relation()
737 /* delete device from copy relation entry */
740 	struct dasd_copy_relation *copy;  in dasd_devmap_delete_copy_relation_device()  local
743 	if (!device->copy)  in dasd_devmap_delete_copy_relation_device()
746 	copy = device->copy;  in dasd_devmap_delete_copy_relation_device()
748 		if (copy->entry[i].device == device)  in dasd_devmap_delete_copy_relation_device()
749 			copy->entry[i].device = NULL;  in dasd_devmap_delete_copy_relation_device()
752 	device->copy = NULL;  in dasd_devmap_delete_copy_relation_device()
756  * read all required information for a copy relation setup and setup the device
764 	struct dasd_copy_relation *copy;  in dasd_devmap_set_device_copy_relation()  local
777 	copy = devmap->copy;  in dasd_devmap_set_device_copy_relation()
778 	/* no copy pair setup for this device */  in dasd_devmap_set_device_copy_relation()
779 	if (!copy)  in dasd_devmap_set_device_copy_relation()
788 		dev_err(&cdev->dev, "Copy relation not enabled on storage server\n");  in dasd_devmap_set_device_copy_relation()
794 		dev_warn(&device->cdev->dev, "Copy pair setup requested for device not in copy relation\n");  in dasd_devmap_set_device_copy_relation()
800 		if (copy->entry[i].configured &&  in dasd_devmap_set_device_copy_relation()
802 			    copy->entry[i].busid, DASD_BUS_ID_SIZE) == 0) {  in dasd_devmap_set_device_copy_relation()
803 			entry = &copy->entry[i];  in dasd_devmap_set_device_copy_relation()
808 		dev_warn(&device->cdev->dev, "Copy relation entry not found\n");  in dasd_devmap_set_device_copy_relation()
812 	/* check if the copy relation is valid */  in dasd_devmap_set_device_copy_relation()
813 	if (dasd_devmap_check_copy_relation(device, entry, data, copy)) {  in dasd_devmap_set_device_copy_relation()
814 		dev_warn(&device->cdev->dev, "Copy relation faulty\n");  in dasd_devmap_set_device_copy_relation()
820 	copy->entry[i].device = device;  in dasd_devmap_set_device_copy_relation()
821 	device->copy = copy;  in dasd_devmap_set_device_copy_relation()
861 	/* Removve copy relation */  in dasd_delete_device()
1928  * print copy relation in the form
1936 	struct dasd_copy_relation *copy;  in dasd_copy_pair_show()  local
1945 	if (!devmap->copy)  in dasd_copy_pair_show()
1948 	copy = devmap->copy;  in dasd_copy_pair_show()
1951 		if (copy->entry[i].configured && copy->entry[i].primary) {  in dasd_copy_pair_show()
1952 			strscpy(prim_busid, copy->entry[i].busid,  in dasd_copy_pair_show()
1962 		if (copy->entry[i].configured && !copy->entry[i].primary)  in dasd_copy_pair_show()
1964 					     copy->entry[i].busid);  in dasd_copy_pair_show()
1973 					 struct dasd_copy_relation *copy,  in dasd_devmap_set_copy_relation()  argument
1981 		if (copy->entry[i].configured &&  in dasd_devmap_set_copy_relation()
1982 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_set_copy_relation()
1985 		if (!copy->entry[i].configured)  in dasd_devmap_set_copy_relation()
1991 	copy->entry[i].configured = true;  in dasd_devmap_set_copy_relation()
1992 	strscpy(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE);  in dasd_devmap_set_copy_relation()
1994 		copy->active = &copy->entry[i];  in dasd_devmap_set_copy_relation()
1995 		copy->entry[i].primary = true;  in dasd_devmap_set_copy_relation()
1997 	if (!devmap->copy)  in dasd_devmap_set_copy_relation()
1998 		devmap->copy = copy;  in dasd_devmap_set_copy_relation()
2003 static void dasd_devmap_del_copy_relation(struct dasd_copy_relation *copy,  in dasd_devmap_del_copy_relation()  argument
2011 		if (copy->entry[i].configured &&  in dasd_devmap_del_copy_relation()
2012 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_del_copy_relation()
2015 	if (i == DASD_CP_ENTRIES || !copy->entry[i].configured) {  in dasd_devmap_del_copy_relation()
2020 	copy->entry[i].configured = false;  in dasd_devmap_del_copy_relation()
2021 	memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_del_copy_relation()
2022 	if (copy->active == &copy->entry[i]) {  in dasd_devmap_del_copy_relation()
2023 		copy->active = NULL;  in dasd_devmap_del_copy_relation()
2024 		copy->entry[i].primary = false;  in dasd_devmap_del_copy_relation()
2031 	struct dasd_copy_relation *copy;  in dasd_devmap_clear_copy_relation()  local
2040 	if (!devmap->copy)  in dasd_devmap_clear_copy_relation()
2043 	copy = devmap->copy;  in dasd_devmap_clear_copy_relation()
2046 		if (!copy->entry[i].configured)  in dasd_devmap_clear_copy_relation()
2049 		if (copy->entry[i].device == copy->active->device)  in dasd_devmap_clear_copy_relation()
2052 		if (copy->entry[i].device)  in dasd_devmap_clear_copy_relation()
2057 		if (strlen(copy->entry[i].busid) == 0)  in dasd_devmap_clear_copy_relation()
2059 		if (copy->entry[i].device) {  in dasd_devmap_clear_copy_relation()
2060 			dasd_put_device(copy->entry[i].device);  in dasd_devmap_clear_copy_relation()
2061 			copy->entry[i].device->copy = NULL;  in dasd_devmap_clear_copy_relation()
2062 			copy->entry[i].device = NULL;  in dasd_devmap_clear_copy_relation()
2064 		devmap = dasd_find_busid_locked(copy->entry[i].busid);  in dasd_devmap_clear_copy_relation()
2065 		devmap->copy = NULL;  in dasd_devmap_clear_copy_relation()
2066 		memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_clear_copy_relation()
2068 	kfree(copy);  in dasd_devmap_clear_copy_relation()
2076  * parse BUSIDs from a copy pair
2121 	struct dasd_copy_relation *copy;  in dasd_copy_pair_store()  local
2150 	/* setting copy relation is only allowed for offline secondary */  in dasd_copy_pair_store()
2154 	if (prim_devmap->copy) {  in dasd_copy_pair_store()
2155 		copy = prim_devmap->copy;  in dasd_copy_pair_store()
2156 	} else if (sec_devmap->copy) {  in dasd_copy_pair_store()
2157 		copy = sec_devmap->copy;  in dasd_copy_pair_store()
2159 		copy = kzalloc(sizeof(*copy), GFP_KERNEL);  in dasd_copy_pair_store()
2160 		if (!copy)  in dasd_copy_pair_store()
2164 	rc = dasd_devmap_set_copy_relation(prim_devmap, copy, prim_busid, true);  in dasd_copy_pair_store()
2169 	rc = dasd_devmap_set_copy_relation(sec_devmap, copy, sec_busid, false);  in dasd_copy_pair_store()
2177 	if (prim_devmap->device && !prim_devmap->device->copy) {  in dasd_copy_pair_store()
2188 		dasd_devmap_del_copy_relation(copy, prim_busid);  in dasd_copy_pair_store()
2189 		dasd_devmap_del_copy_relation(copy, sec_busid);  in dasd_copy_pair_store()
2202 	struct dasd_copy_relation *copy;  in dasd_copy_role_show()  local
2210 	if (!device->copy) {  in dasd_copy_role_show()
2214 	copy = device->copy;  in dasd_copy_role_show()
2216 	if (copy->active->device == device) {  in dasd_copy_role_show()
2221 		if (copy->entry[i].device == device) {  in dasd_copy_role_show()
2226 	/* not in the list, no COPY role */  in dasd_copy_role_show()