48 	struct dasd_copy_relation *copy;  member
602 		dev_warn(&device->cdev->dev, "Unable to query copy relation status\n");  in dasd_devmap_get_pprc_status()
611 		dev_warn(&device->cdev->dev, "Error during copy relation status query\n");  in dasd_devmap_get_pprc_status()
646  * check the consistency of a specified copy relation by checking
649  *   - is the given device part of a copy pair setup
658 					   struct dasd_copy_relation *copy)  in dasd_devmap_check_copy_relation()  argument
671 		dev_warn(&device->cdev->dev, "Device not part of a copy relation\n");  in dasd_devmap_check_copy_relation()
678 			dev_warn(&device->cdev->dev, "Copy pair secondary is setup as primary\n");  in dasd_devmap_check_copy_relation()
684 				 "Primary device %s does not match copy pair status primary device %04x\n",  in dasd_devmap_check_copy_relation()
692 			dev_warn(&device->cdev->dev, "Copy pair primary is setup as secondary\n");  in dasd_devmap_check_copy_relation()
698 				 "Secondary device %s does not match copy pair status secondary device %04x\n",  in dasd_devmap_check_copy_relation()
707 	 * the current device has to be part of the copy relation of all  in dasd_devmap_check_copy_relation()
708 	 * entries to prevent misrouted IO to another copy pair  in dasd_devmap_check_copy_relation()
711 		if (entry == &copy->entry[j])  in dasd_devmap_check_copy_relation()
714 			tmp_dev = copy->entry[j].device;  in dasd_devmap_check_copy_relation()
724 				 "Copy pair relation does not contain device: %s\n",  in dasd_devmap_check_copy_relation()
734 /* delete device from copy relation entry */
737 	struct dasd_copy_relation *copy;  in dasd_devmap_delete_copy_relation_device()  local
740 	if (!device->copy)  in dasd_devmap_delete_copy_relation_device()
743 	copy = device->copy;  in dasd_devmap_delete_copy_relation_device()
745 		if (copy->entry[i].device == device)  in dasd_devmap_delete_copy_relation_device()
746 			copy->entry[i].device = NULL;  in dasd_devmap_delete_copy_relation_device()
749 	device->copy = NULL;  in dasd_devmap_delete_copy_relation_device()
753  * read all required information for a copy relation setup and setup the device
761 	struct dasd_copy_relation *copy;  in dasd_devmap_set_device_copy_relation()  local
774 	copy = devmap->copy;  in dasd_devmap_set_device_copy_relation()
775 	/* no copy pair setup for this device */  in dasd_devmap_set_device_copy_relation()
776 	if (!copy)  in dasd_devmap_set_device_copy_relation()
785 		dev_err(&cdev->dev, "Copy relation not enabled on storage server\n");  in dasd_devmap_set_device_copy_relation()
791 		dev_warn(&device->cdev->dev, "Copy pair setup requested for device not in copy relation\n");  in dasd_devmap_set_device_copy_relation()
797 		if (copy->entry[i].configured &&  in dasd_devmap_set_device_copy_relation()
799 			    copy->entry[i].busid, DASD_BUS_ID_SIZE) == 0) {  in dasd_devmap_set_device_copy_relation()
800 			entry = &copy->entry[i];  in dasd_devmap_set_device_copy_relation()
805 		dev_warn(&device->cdev->dev, "Copy relation entry not found\n");  in dasd_devmap_set_device_copy_relation()
809 	/* check if the copy relation is valid */  in dasd_devmap_set_device_copy_relation()
810 	if (dasd_devmap_check_copy_relation(device, entry, data, copy)) {  in dasd_devmap_set_device_copy_relation()
811 		dev_warn(&device->cdev->dev, "Copy relation faulty\n");  in dasd_devmap_set_device_copy_relation()
817 	copy->entry[i].device = device;  in dasd_devmap_set_device_copy_relation()
818 	device->copy = copy;  in dasd_devmap_set_device_copy_relation()
858 	/* Remove copy relation */  in dasd_delete_device()
2037  * print copy relation in the form
2045 	struct dasd_copy_relation *copy;  in dasd_copy_pair_show()  local
2054 	if (!devmap->copy)  in dasd_copy_pair_show()
2057 	copy = devmap->copy;  in dasd_copy_pair_show()
2060 		if (copy->entry[i].configured && copy->entry[i].primary) {  in dasd_copy_pair_show()
2061 			strscpy(prim_busid, copy->entry[i].busid,  in dasd_copy_pair_show()
2071 		if (copy->entry[i].configured && !copy->entry[i].primary)  in dasd_copy_pair_show()
2073 					     copy->entry[i].busid);  in dasd_copy_pair_show()
2082 					 struct dasd_copy_relation *copy,  in dasd_devmap_set_copy_relation()  argument
2090 		if (copy->entry[i].configured &&  in dasd_devmap_set_copy_relation()
2091 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_set_copy_relation()
2094 		if (!copy->entry[i].configured)  in dasd_devmap_set_copy_relation()
2100 	copy->entry[i].configured = true;  in dasd_devmap_set_copy_relation()
2101 	strscpy(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE);  in dasd_devmap_set_copy_relation()
2103 		copy->active = &copy->entry[i];  in dasd_devmap_set_copy_relation()
2104 		copy->entry[i].primary = true;  in dasd_devmap_set_copy_relation()
2106 	if (!devmap->copy)  in dasd_devmap_set_copy_relation()
2107 		devmap->copy = copy;  in dasd_devmap_set_copy_relation()
2112 static void dasd_devmap_del_copy_relation(struct dasd_copy_relation *copy,  in dasd_devmap_del_copy_relation()  argument
2120 		if (copy->entry[i].configured &&  in dasd_devmap_del_copy_relation()
2121 		    strncmp(copy->entry[i].busid, busid, DASD_BUS_ID_SIZE) == 0)  in dasd_devmap_del_copy_relation()
2124 	if (i == DASD_CP_ENTRIES || !copy->entry[i].configured) {  in dasd_devmap_del_copy_relation()
2129 	copy->entry[i].configured = false;  in dasd_devmap_del_copy_relation()
2130 	memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_del_copy_relation()
2131 	if (copy->active == &copy->entry[i]) {  in dasd_devmap_del_copy_relation()
2132 		copy->active = NULL;  in dasd_devmap_del_copy_relation()
2133 		copy->entry[i].primary = false;  in dasd_devmap_del_copy_relation()
2140 	struct dasd_copy_relation *copy;  in dasd_devmap_clear_copy_relation()  local
2149 	if (!devmap->copy)  in dasd_devmap_clear_copy_relation()
2152 	copy = devmap->copy;  in dasd_devmap_clear_copy_relation()
2155 		if (!copy->entry[i].configured)  in dasd_devmap_clear_copy_relation()
2158 		if (copy->entry[i].device == copy->active->device)  in dasd_devmap_clear_copy_relation()
2161 		if (copy->entry[i].device)  in dasd_devmap_clear_copy_relation()
2166 		if (strlen(copy->entry[i].busid) == 0)  in dasd_devmap_clear_copy_relation()
2168 		if (copy->entry[i].device) {  in dasd_devmap_clear_copy_relation()
2169 			dasd_put_device(copy->entry[i].device);  in dasd_devmap_clear_copy_relation()
2170 			copy->entry[i].device->copy = NULL;  in dasd_devmap_clear_copy_relation()
2171 			copy->entry[i].device = NULL;  in dasd_devmap_clear_copy_relation()
2173 		devmap = dasd_find_busid_locked(copy->entry[i].busid);  in dasd_devmap_clear_copy_relation()
2174 		devmap->copy = NULL;  in dasd_devmap_clear_copy_relation()
2175 		memset(copy->entry[i].busid, 0, DASD_BUS_ID_SIZE);  in dasd_devmap_clear_copy_relation()
2177 	kfree(copy);  in dasd_devmap_clear_copy_relation()
2185  * parse BUSIDs from a copy pair
2230 	struct dasd_copy_relation *copy;  in dasd_copy_pair_store()  local
2265 	/* setting copy relation is only allowed for offline secondary */  in dasd_copy_pair_store()
2269 	if (prim_devmap->copy) {  in dasd_copy_pair_store()
2270 		copy = prim_devmap->copy;  in dasd_copy_pair_store()
2271 	} else if (sec_devmap->copy) {  in dasd_copy_pair_store()
2272 		copy = sec_devmap->copy;  in dasd_copy_pair_store()
2274 		copy = kzalloc(sizeof(*copy), GFP_KERNEL);  in dasd_copy_pair_store()
2275 		if (!copy)  in dasd_copy_pair_store()
2279 	rc = dasd_devmap_set_copy_relation(prim_devmap, copy, prim_busid, true);  in dasd_copy_pair_store()
2284 	rc = dasd_devmap_set_copy_relation(sec_devmap, copy, sec_busid, false);  in dasd_copy_pair_store()
2292 	if (prim_devmap->device && !prim_devmap->device->copy) {  in dasd_copy_pair_store()
2303 		dasd_devmap_del_copy_relation(copy, prim_busid);  in dasd_copy_pair_store()
2304 		dasd_devmap_del_copy_relation(copy, sec_busid);  in dasd_copy_pair_store()
2317 	struct dasd_copy_relation *copy;  in dasd_copy_role_show()  local
2325 	if (!device->copy) {  in dasd_copy_role_show()
2329 	copy = device->copy;  in dasd_copy_role_show()
2331 	if (copy->active->device == device) {  in dasd_copy_role_show()
2336 		if (copy->entry[i].device == device) {  in dasd_copy_role_show()
2341 	/* not in the list, no COPY role */  in dasd_copy_role_show()