52 	struct dasd_copy_relation *copy;  member
606 		dev_warn(&device->cdev->dev, "Unable to query copy relation status\n");  in dasd_devmap_get_pprc_status()
615 		dev_warn(&device->cdev->dev, "Error during copy relation status query\n");  in dasd_devmap_get_pprc_status()
650  * check the consistency of a specified copy relation by checking
653  *   - is the given device part of a copy pair setup
662 					   struct dasd_copy_relation *copy)  in dasd_devmap_check_copy_relation()  argument
675 		dev_warn(&device->cdev->dev, "Device not part of a copy relation\n");  in dasd_devmap_check_copy_relation()
682 			dev_warn(&device->cdev->dev, "Copy pair secondary is setup as primary\n");  in dasd_devmap_check_copy_relation()
688 				 "Primary device %s does not match copy pair status primary device %04x\n",  in dasd_devmap_check_copy_relation()
696 			dev_warn(&device->cdev->dev, "Copy pair primary is setup as secondary\n");  in dasd_devmap_check_copy_relation()
702 				 "Secondary device %s does not match copy pair status secondary device %04x\n",  in dasd_devmap_check_copy_relation()
711 	 * the current device has to be part of the copy relation of all  in dasd_devmap_check_copy_relation()
712 	 * entries to prevent misrouted IO to another copy pair  in dasd_devmap_check_copy_relation()
715 		if (entry == &copy->entry[j])  in dasd_devmap_check_copy_relation()
718 			tmp_dev = copy->entry[j].device;  in dasd_devmap_check_copy_relation()
728 				 "Copy pair relation does not contain device: %s\n",  in dasd_devmap_check_copy_relation()
738 /* delete device from copy relation entry */
741 	struct dasd_copy_relation *copy;  in dasd_devmap_delete_copy_relation_device()  local
744 	if (!device->copy)  in dasd_devmap_delete_copy_relation_device()
747 	copy = device->copy;  in dasd_devmap_delete_copy_relation_device()
749 		if (copy->entry[i].device == device)  in dasd_devmap_delete_copy_relation_device()
750 			copy->entry[i].device = NULL;  in dasd_devmap_delete_copy_relation_device()
753 	device->copy = NULL;  in dasd_devmap_delete_copy_relation_device()
757  * read all required information for a copy relation setup and setup the device
765 	struct dasd_copy_relation *copy;  in dasd_devmap_set_device_copy_relation()  local
778 	copy = devmap->copy;  in dasd_devmap_set_device_copy_relation()
779 	/* no copy pair setup for this device */  in dasd_devmap_set_device_copy_relation()
780 	if (!copy)  in dasd_devmap_set_device_copy_relation()
789 		dev_err(&cdev->dev, "Copy relation not enabled on storage server\n");  in dasd_devmap_set_device_copy_relation()
795 		dev_warn(&device->cdev->dev, "Copy pair setup requested for device not in copy relation\n");  in dasd_devmap_set_device_copy_relation()
801 		if (copy->entry[i].configured &&  in dasd_devmap_set_device_copy_relation()
803 			    copy->entry[i].busid, DASD_BUS_ID_SIZE) == 0) {  in dasd_devmap_set_device_copy_relation()
804 			entry = &copy->entry[i];  in dasd_devmap_set_device_copy_relation()
809 		dev_warn(&device->cdev->dev, "Copy relation entry not found\n");  in dasd_devmap_set_device_copy_relation()
813 	/* check if the copy relation is valid */  in dasd_devmap_set_device_copy_relation()
814 	if (dasd_devmap_check_copy_relation(device, entry, data, copy)) {  in dasd_devmap_set_device_copy_relation()
815 		dev_warn(&device->cdev->dev, "Copy relation faulty\n");  in dasd_devmap_set_device_copy_relation()
821 	copy->entry[i].device = device;  in dasd_devmap_set_device_copy_relation()
822 	device->copy = copy;  in dasd_devmap_set_device_copy_relation()
862 	/* Removve copy relation */  in dasd_delete_device()
2047  * print copy relation in the form
2055 	struct dasd_copy_relation *copy;  in dasd_copy_pair_show()  local
2064 	if (!devmap->copy)  in dasd_copy_pair_show()
2067 	copy = devmap->copy;  in dasd_copy_pair_show()
2070 		if (copy->entry[i].configured && copy->entry[i].primary) {  in dasd_copy_pair_show()
2071 			strscpy(prim_busid, copy->entry[i].busid,  in dasd_copy_pair_show()
2081 		if (copy->entry[i].configured && !copy->entry[i].primary)  in dasd_copy_pair_show()
2083 					     copy->entry[i].busid);  in dasd_copy_pair_show()
2092 					 struct dasd_copy_relation *copy,  in dasd_devmap_set_copy_relation()  argument
2100 		if (copy->entry[i].configured &&  in dasd_devmap_set_copy_relation()
2101 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_set_copy_relation()
2104 		if (!copy->entry[i].configured)  in dasd_devmap_set_copy_relation()
2110 	copy->entry[i].configured = true;  in dasd_devmap_set_copy_relation()
2111 	strscpy(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE);  in dasd_devmap_set_copy_relation()
2113 		copy->active = &copy->entry[i];  in dasd_devmap_set_copy_relation()
2114 		copy->entry[i].primary = true;  in dasd_devmap_set_copy_relation()
2116 	if (!devmap->copy)  in dasd_devmap_set_copy_relation()
2117 		devmap->copy = copy;  in dasd_devmap_set_copy_relation()
2122 static void dasd_devmap_del_copy_relation(struct dasd_copy_relation *copy,  in dasd_devmap_del_copy_relation()  argument
2130 		if (copy->entry[i].configured &&  in dasd_devmap_del_copy_relation()
2131 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_del_copy_relation()
2134 	if (i == DASD_CP_ENTRIES || !copy->entry[i].configured) {  in dasd_devmap_del_copy_relation()
2139 	copy->entry[i].configured = false;  in dasd_devmap_del_copy_relation()
2140 	memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_del_copy_relation()
2141 	if (copy->active == &copy->entry[i]) {  in dasd_devmap_del_copy_relation()
2142 		copy->active = NULL;  in dasd_devmap_del_copy_relation()
2143 		copy->entry[i].primary = false;  in dasd_devmap_del_copy_relation()
2150 	struct dasd_copy_relation *copy;  in dasd_devmap_clear_copy_relation()  local
2159 	if (!devmap->copy)  in dasd_devmap_clear_copy_relation()
2162 	copy = devmap->copy;  in dasd_devmap_clear_copy_relation()
2165 		if (!copy->entry[i].configured)  in dasd_devmap_clear_copy_relation()
2168 		if (copy->entry[i].device == copy->active->device)  in dasd_devmap_clear_copy_relation()
2171 		if (copy->entry[i].device)  in dasd_devmap_clear_copy_relation()
2176 		if (strlen(copy->entry[i].busid) == 0)  in dasd_devmap_clear_copy_relation()
2178 		if (copy->entry[i].device) {  in dasd_devmap_clear_copy_relation()
2179 			dasd_put_device(copy->entry[i].device);  in dasd_devmap_clear_copy_relation()
2180 			copy->entry[i].device->copy = NULL;  in dasd_devmap_clear_copy_relation()
2181 			copy->entry[i].device = NULL;  in dasd_devmap_clear_copy_relation()
2183 		devmap = dasd_find_busid_locked(copy->entry[i].busid);  in dasd_devmap_clear_copy_relation()
2184 		devmap->copy = NULL;  in dasd_devmap_clear_copy_relation()
2185 		memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_clear_copy_relation()
2187 	kfree(copy);  in dasd_devmap_clear_copy_relation()
2195  * parse BUSIDs from a copy pair
2240 	struct dasd_copy_relation *copy;  in dasd_copy_pair_store()  local
2275 	/* setting copy relation is only allowed for offline secondary */  in dasd_copy_pair_store()
2279 	if (prim_devmap->copy) {  in dasd_copy_pair_store()
2280 		copy = prim_devmap->copy;  in dasd_copy_pair_store()
2281 	} else if (sec_devmap->copy) {  in dasd_copy_pair_store()
2282 		copy = sec_devmap->copy;  in dasd_copy_pair_store()
2284 		copy = kzalloc(sizeof(*copy), GFP_KERNEL);  in dasd_copy_pair_store()
2285 		if (!copy)  in dasd_copy_pair_store()
2289 	rc = dasd_devmap_set_copy_relation(prim_devmap, copy, prim_busid, true);  in dasd_copy_pair_store()
2294 	rc = dasd_devmap_set_copy_relation(sec_devmap, copy, sec_busid, false);  in dasd_copy_pair_store()
2302 	if (prim_devmap->device && !prim_devmap->device->copy) {  in dasd_copy_pair_store()
2313 		dasd_devmap_del_copy_relation(copy, prim_busid);  in dasd_copy_pair_store()
2314 		dasd_devmap_del_copy_relation(copy, sec_busid);  in dasd_copy_pair_store()
2327 	struct dasd_copy_relation *copy;  in dasd_copy_role_show()  local
2335 	if (!device->copy) {  in dasd_copy_role_show()
2339 	copy = device->copy;  in dasd_copy_role_show()
2341 	if (copy->active->device == device) {  in dasd_copy_role_show()
2346 		if (copy->entry[i].device == device) {  in dasd_copy_role_show()
2351 	/* not in the list, no COPY role */  in dasd_copy_role_show()