50 	struct dasd_copy_relation *copy;  member
604 		dev_warn(&device->cdev->dev, "Unable to query copy relation status\n");  in dasd_devmap_get_pprc_status()
613 		dev_warn(&device->cdev->dev, "Error during copy relation status query\n");  in dasd_devmap_get_pprc_status()
648  * check the consistency of a specified copy relation by checking
651  *   - is the given device part of a copy pair setup
660 					   struct dasd_copy_relation *copy)  in dasd_devmap_check_copy_relation()  argument
673 		dev_warn(&device->cdev->dev, "Device not part of a copy relation\n");  in dasd_devmap_check_copy_relation()
680 			dev_warn(&device->cdev->dev, "Copy pair secondary is setup as primary\n");  in dasd_devmap_check_copy_relation()
686 				 "Primary device %s does not match copy pair status primary device %04x\n",  in dasd_devmap_check_copy_relation()
694 			dev_warn(&device->cdev->dev, "Copy pair primary is setup as secondary\n");  in dasd_devmap_check_copy_relation()
700 				 "Secondary device %s does not match copy pair status secondary device %04x\n",  in dasd_devmap_check_copy_relation()
709 	 * the current device has to be part of the copy relation of all  in dasd_devmap_check_copy_relation()
710 	 * entries to prevent misrouted IO to another copy pair  in dasd_devmap_check_copy_relation()
713 		if (entry == &copy->entry[j])  in dasd_devmap_check_copy_relation()
716 			tmp_dev = copy->entry[j].device;  in dasd_devmap_check_copy_relation()
726 				 "Copy pair relation does not contain device: %s\n",  in dasd_devmap_check_copy_relation()
736 /* delete device from copy relation entry */
739 	struct dasd_copy_relation *copy;  in dasd_devmap_delete_copy_relation_device()  local
742 	if (!device->copy)  in dasd_devmap_delete_copy_relation_device()
745 	copy = device->copy;  in dasd_devmap_delete_copy_relation_device()
747 		if (copy->entry[i].device == device)  in dasd_devmap_delete_copy_relation_device()
748 			copy->entry[i].device = NULL;  in dasd_devmap_delete_copy_relation_device()
751 	device->copy = NULL;  in dasd_devmap_delete_copy_relation_device()
755  * read all required information for a copy relation setup and setup the device
763 	struct dasd_copy_relation *copy;  in dasd_devmap_set_device_copy_relation()  local
776 	copy = devmap->copy;  in dasd_devmap_set_device_copy_relation()
777 	/* no copy pair setup for this device */  in dasd_devmap_set_device_copy_relation()
778 	if (!copy)  in dasd_devmap_set_device_copy_relation()
787 		dev_err(&cdev->dev, "Copy relation not enabled on storage server\n");  in dasd_devmap_set_device_copy_relation()
793 		dev_warn(&device->cdev->dev, "Copy pair setup requested for device not in copy relation\n");  in dasd_devmap_set_device_copy_relation()
799 		if (copy->entry[i].configured &&  in dasd_devmap_set_device_copy_relation()
801 			    copy->entry[i].busid, DASD_BUS_ID_SIZE) == 0) {  in dasd_devmap_set_device_copy_relation()
802 			entry = &copy->entry[i];  in dasd_devmap_set_device_copy_relation()
807 		dev_warn(&device->cdev->dev, "Copy relation entry not found\n");  in dasd_devmap_set_device_copy_relation()
811 	/* check if the copy relation is valid */  in dasd_devmap_set_device_copy_relation()
812 	if (dasd_devmap_check_copy_relation(device, entry, data, copy)) {  in dasd_devmap_set_device_copy_relation()
813 		dev_warn(&device->cdev->dev, "Copy relation faulty\n");  in dasd_devmap_set_device_copy_relation()
819 	copy->entry[i].device = device;  in dasd_devmap_set_device_copy_relation()
820 	device->copy = copy;  in dasd_devmap_set_device_copy_relation()
860 	/* Remove copy relation */  in dasd_delete_device()
2039  * print copy relation in the form
2047 	struct dasd_copy_relation *copy;  in dasd_copy_pair_show()  local
2056 	if (!devmap->copy)  in dasd_copy_pair_show()
2059 	copy = devmap->copy;  in dasd_copy_pair_show()
2062 		if (copy->entry[i].configured && copy->entry[i].primary) {  in dasd_copy_pair_show()
2063 			strscpy(prim_busid, copy->entry[i].busid,  in dasd_copy_pair_show()
2073 		if (copy->entry[i].configured && !copy->entry[i].primary)  in dasd_copy_pair_show()
2075 					     copy->entry[i].busid);  in dasd_copy_pair_show()
2084 					 struct dasd_copy_relation *copy,  in dasd_devmap_set_copy_relation()  argument
2092 		if (copy->entry[i].configured &&  in dasd_devmap_set_copy_relation()
2093 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_set_copy_relation()
2096 		if (!copy->entry[i].configured)  in dasd_devmap_set_copy_relation()
2102 	copy->entry[i].configured = true;  in dasd_devmap_set_copy_relation()
2103 	strscpy(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE);  in dasd_devmap_set_copy_relation()
2105 		copy->active = &copy->entry[i];  in dasd_devmap_set_copy_relation()
2106 		copy->entry[i].primary = true;  in dasd_devmap_set_copy_relation()
2108 	if (!devmap->copy)  in dasd_devmap_set_copy_relation()
2109 		devmap->copy = copy;  in dasd_devmap_set_copy_relation()
2114 static void dasd_devmap_del_copy_relation(struct dasd_copy_relation *copy,  in dasd_devmap_del_copy_relation()  argument
2122 		if (copy->entry[i].configured &&  in dasd_devmap_del_copy_relation()
2123 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_del_copy_relation()
2126 	if (i == DASD_CP_ENTRIES || !copy->entry[i].configured) {  in dasd_devmap_del_copy_relation()
2131 	copy->entry[i].configured = false;  in dasd_devmap_del_copy_relation()
2132 	memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_del_copy_relation()
2133 	if (copy->active == &copy->entry[i]) {  in dasd_devmap_del_copy_relation()
2134 		copy->active = NULL;  in dasd_devmap_del_copy_relation()
2135 		copy->entry[i].primary = false;  in dasd_devmap_del_copy_relation()
2142 	struct dasd_copy_relation *copy;  in dasd_devmap_clear_copy_relation()  local
2151 	if (!devmap->copy)  in dasd_devmap_clear_copy_relation()
2154 	copy = devmap->copy;  in dasd_devmap_clear_copy_relation()
2157 		if (!copy->entry[i].configured)  in dasd_devmap_clear_copy_relation()
2160 		if (copy->entry[i].device == copy->active->device)  in dasd_devmap_clear_copy_relation()
2163 		if (copy->entry[i].device)  in dasd_devmap_clear_copy_relation()
2168 		if (strlen(copy->entry[i].busid) == 0)  in dasd_devmap_clear_copy_relation()
2170 		if (copy->entry[i].device) {  in dasd_devmap_clear_copy_relation()
2171 			dasd_put_device(copy->entry[i].device);  in dasd_devmap_clear_copy_relation()
2172 			copy->entry[i].device->copy = NULL;  in dasd_devmap_clear_copy_relation()
2173 			copy->entry[i].device = NULL;  in dasd_devmap_clear_copy_relation()
2175 		devmap = dasd_find_busid_locked(copy->entry[i].busid);  in dasd_devmap_clear_copy_relation()
2176 		devmap->copy = NULL;  in dasd_devmap_clear_copy_relation()
2177 		memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_clear_copy_relation()
2179 	kfree(copy);  in dasd_devmap_clear_copy_relation()
2187  * parse BUSIDs from a copy pair
2232 	struct dasd_copy_relation *copy;  in dasd_copy_pair_store()  local
2267 	/* setting copy relation is only allowed for offline secondary */  in dasd_copy_pair_store()
2271 	if (prim_devmap->copy) {  in dasd_copy_pair_store()
2272 		copy = prim_devmap->copy;  in dasd_copy_pair_store()
2273 	} else if (sec_devmap->copy) {  in dasd_copy_pair_store()
2274 		copy = sec_devmap->copy;  in dasd_copy_pair_store()
2276 		copy = kzalloc(sizeof(*copy), GFP_KERNEL);  in dasd_copy_pair_store()
2277 		if (!copy)  in dasd_copy_pair_store()
2281 	rc = dasd_devmap_set_copy_relation(prim_devmap, copy, prim_busid, true);  in dasd_copy_pair_store()
2286 	rc = dasd_devmap_set_copy_relation(sec_devmap, copy, sec_busid, false);  in dasd_copy_pair_store()
2294 	if (prim_devmap->device && !prim_devmap->device->copy) {  in dasd_copy_pair_store()
2305 		dasd_devmap_del_copy_relation(copy, prim_busid);  in dasd_copy_pair_store()
2306 		dasd_devmap_del_copy_relation(copy, sec_busid);  in dasd_copy_pair_store()
2319 	struct dasd_copy_relation *copy;  in dasd_copy_role_show()  local
2327 	if (!device->copy) {  in dasd_copy_role_show()
2331 	copy = device->copy;  in dasd_copy_role_show()
2333 	if (copy->active->device == device) {  in dasd_copy_role_show()
2338 		if (copy->entry[i].device == device) {  in dasd_copy_role_show()
2343 	/* not in the list, no COPY role */  in dasd_copy_role_show()