1 // SPDX-License-Identifier: GPL-2.0
48 	int rc;  in sclp_sync_request_timeout()  local
52 		return -ENOMEM;  in sclp_sync_request_timeout()
54 		request->queue_timeout = timeout;  in sclp_sync_request_timeout()
55 	request->command = cmd;  in sclp_sync_request_timeout()
56 	request->sccb = sccb;  in sclp_sync_request_timeout()
57 	request->status = SCLP_REQ_FILLED;  in sclp_sync_request_timeout()
58 	request->callback = sclp_sync_callback;  in sclp_sync_request_timeout()
59 	request->callback_data = &completion;  in sclp_sync_request_timeout()
63 	rc = sclp_add_request(request);  in sclp_sync_request_timeout()
64 	if (rc)  in sclp_sync_request_timeout()
69 	if (request->status != SCLP_REQ_DONE) {  in sclp_sync_request_timeout()
70 		pr_warn("sync request failed (cmd=0x%08x, status=0x%02x)\n",  in sclp_sync_request_timeout()
71 			cmd, request->status);  in sclp_sync_request_timeout()
72 		rc = -EIO;  in sclp_sync_request_timeout()
76 	return rc;  in sclp_sync_request_timeout()
88 	int rc;  in _sclp_get_core_info()  local
93 		return -EOPNOTSUPP;  in _sclp_get_core_info()
97 		return -ENOMEM;  in _sclp_get_core_info()
98 	sccb->header.length = length;  in _sclp_get_core_info()
99 	sccb->header.control_mask[2] = 0x80;  in _sclp_get_core_info()
100 	rc = sclp_sync_request_timeout(SCLP_CMDW_READ_CPU_INFO, sccb,  in _sclp_get_core_info()
102 	if (rc)  in _sclp_get_core_info()
104 	if (sccb->header.response_code != 0x0010) {  in _sclp_get_core_info()
105 		pr_warn("readcpuinfo failed (response=0x%04x)\n",  in _sclp_get_core_info()
106 			sccb->header.response_code);  in _sclp_get_core_info()
107 		rc = -EIO;  in _sclp_get_core_info()
113 	return rc;  in _sclp_get_core_info()
123 	int rc;  in do_core_configure()  local
126 		return -EOPNOTSUPP;  in do_core_configure()
133 		return -ENOMEM;  in do_core_configure()
134 	sccb->header.length = sizeof(*sccb);  in do_core_configure()
135 	rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL);  in do_core_configure()
136 	if (rc)  in do_core_configure()
138 	switch (sccb->header.response_code) {  in do_core_configure()
143 		pr_warn("configure cpu failed (cmd=0x%08x, response=0x%04x)\n",  in do_core_configure()
144 			cmd, sccb->header.response_code);  in do_core_configure()
145 		rc = -EIO;  in do_core_configure()
150 	return rc;  in do_core_configure()
190 	return (unsigned long long) (rn - 1) * sclp.rzm;  in rn2addr()
196 	int rc;  in do_assign_storage()  local
200 		return -ENOMEM;  in do_assign_storage()
201 	sccb->header.length = PAGE_SIZE;  in do_assign_storage()
202 	sccb->rn = rn;  in do_assign_storage()
203 	rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL);  in do_assign_storage()
204 	if (rc)  in do_assign_storage()
206 	switch (sccb->header.response_code) {  in do_assign_storage()
211 		pr_warn("assign storage failed (cmd=0x%08x, response=0x%04x, rn=0x%04x)\n",  in do_assign_storage()
212 			cmd, sccb->header.response_code, rn);  in do_assign_storage()
213 		rc = -EIO;  in do_assign_storage()
218 	return rc;  in do_assign_storage()
224 	int rc;  in sclp_assign_storage()  local
226 	rc = do_assign_storage(0x000d0001, rn);  in sclp_assign_storage()
227 	if (rc)  in sclp_assign_storage()
228 		return rc;  in sclp_assign_storage()
250 	int rc;  in sclp_attach_storage()  local
255 		return -ENOMEM;  in sclp_attach_storage()
256 	sccb->header.length = PAGE_SIZE;  in sclp_attach_storage()
257 	sccb->header.function_code = 0x40;  in sclp_attach_storage()
258 	rc = sclp_sync_request_timeout(0x00080001 | id << 8, sccb,  in sclp_attach_storage()
260 	if (rc)  in sclp_attach_storage()
262 	switch (sccb->header.response_code) {  in sclp_attach_storage()
265 		for (i = 0; i < sccb->assigned; i++) {  in sclp_attach_storage()
266 			if (sccb->entries[i])  in sclp_attach_storage()
267 				sclp_unassign_storage(sccb->entries[i] >> 16);  in sclp_attach_storage()
271 		rc = -EIO;  in sclp_attach_storage()
276 	return rc;  in sclp_attach_storage()
284 	int rc = 0;  in sclp_mem_change_state()  local
287 		istart = rn2addr(incr->rn);  in sclp_mem_change_state()
288 		if (start + size - 1 < istart)  in sclp_mem_change_state()
290 		if (start > istart + sclp.rzm - 1)  in sclp_mem_change_state()
293 			rc |= sclp_assign_storage(incr->rn);  in sclp_mem_change_state()
295 			sclp_unassign_storage(incr->rn);  in sclp_mem_change_state()
296 		if (rc == 0)  in sclp_mem_change_state()
297 			incr->standby = online ? 0 : 1;  in sclp_mem_change_state()
299 	return rc ? -EIO : 0;  in sclp_mem_change_state()
308 		istart = rn2addr(incr->rn);  in contains_standby_increment()
309 		if (end - 1 < istart)  in contains_standby_increment()
311 		if (start > istart + sclp.rzm - 1)  in contains_standby_increment()
313 		if (incr->standby)  in contains_standby_increment()
325 	int rc = 0;  in sclp_mem_notifier()  local
328 	start = arg->start_pfn << PAGE_SHIFT;  in sclp_mem_notifier()
329 	size = arg->nr_pages << PAGE_SHIFT;  in sclp_mem_notifier()
341 			rc = -EPERM;  in sclp_mem_notifier()
347 		rc = sclp_mem_change_state(start, size, 1);  in sclp_mem_notifier()
356 		rc = -EINVAL;  in sclp_mem_notifier()
360 	return rc ? NOTIFY_BAD : NOTIFY_OK;  in sclp_mem_notifier()
374 	size_align = rounddown(*start + *size, alignment) - start_align;  in align_to_block_size()
376 	pr_info("Standby memory at 0x%llx (%lluM of %lluM usable)\n",  in align_to_block_size()
398 		size = VMEM_MAX_PHYS - start;  in add_memory_merged()
402 		size = ident_map_size - start;  in add_memory_merged()
419 		if (incr->standby)  in sclp_add_standby_memory()
420 			add_memory_merged(incr->rn);  in sclp_add_standby_memory()
433 	new_incr->rn = rn;  in insert_increment()
434 	new_incr->standby = standby;  in insert_increment()
438 		if (assigned && incr->rn > rn)  in insert_increment()
440 		if (!assigned && incr->rn - last_rn > 1)  in insert_increment()
442 		last_rn = incr->rn;  in insert_increment()
443 		prev = &incr->list;  in insert_increment()
446 		new_incr->rn = last_rn + 1;  in insert_increment()
447 	if (new_incr->rn > sclp.rnmax) {  in insert_increment()
451 	list_add(&new_incr->list, prev);  in insert_increment()
457 	int i, id, assigned, rc;  in sclp_detect_standby_memory()  local
463 	rc = -ENOMEM;  in sclp_detect_standby_memory()
470 		sccb->header.length = PAGE_SIZE;  in sclp_detect_standby_memory()
471 		rc = sclp_sync_request(SCLP_CMDW_READ_STORAGE_INFO | id << 8, sccb);  in sclp_detect_standby_memory()
472 		if (rc)  in sclp_detect_standby_memory()
474 		switch (sccb->header.response_code) {  in sclp_detect_standby_memory()
477 			for (i = 0; i < sccb->assigned; i++) {  in sclp_detect_standby_memory()
478 				if (!sccb->entries[i])  in sclp_detect_standby_memory()
481 				insert_increment(sccb->entries[i] >> 16, 0, 1);  in sclp_detect_standby_memory()
487 			for (i = 0; i < sccb->assigned; i++) {  in sclp_detect_standby_memory()
488 				if (!sccb->entries[i])  in sclp_detect_standby_memory()
491 				insert_increment(sccb->entries[i] >> 16, 1, 1);  in sclp_detect_standby_memory()
495 			rc = -EIO;  in sclp_detect_standby_memory()
498 		if (!rc)  in sclp_detect_standby_memory()
499 			sclp_max_storage_id = sccb->max_id;  in sclp_detect_standby_memory()
501 	if (rc || list_empty(&sclp_mem_list))  in sclp_detect_standby_memory()
503 	for (i = 1; i <= sclp.rnmax - assigned; i++)  in sclp_detect_standby_memory()
505 	rc = register_memory_notifier(&sclp_mem_nb);  in sclp_detect_standby_memory()
506 	if (rc)  in sclp_detect_standby_memory()
511 	return rc;  in sclp_detect_standby_memory()
535 	int rc;  in do_chp_configure()  local
538 		return -EOPNOTSUPP;  in do_chp_configure()
542 		return -ENOMEM;  in do_chp_configure()
543 	sccb->header.length = sizeof(*sccb);  in do_chp_configure()
544 	rc = sclp_sync_request(cmd, sccb);  in do_chp_configure()
545 	if (rc)  in do_chp_configure()
547 	switch (sccb->header.response_code) {  in do_chp_configure()
554 		pr_warn("configure channel-path failed (cmd=0x%08x, response=0x%04x)\n",  in do_chp_configure()
555 			cmd, sccb->header.response_code);  in do_chp_configure()
556 		rc = -EIO;  in do_chp_configure()
561 	return rc;  in do_chp_configure()
565  * sclp_chp_configure - perform configure channel-path sclp command
566  * @chpid: channel-path ID
568  * Perform configure channel-path command sclp command for specified chpid.
569  * Return 0 after command successfully finished, non-zero otherwise.
577  * sclp_chp_deconfigure - perform deconfigure channel-path sclp command
578  * @chpid: channel-path ID
580  * Perform deconfigure channel-path command sclp command for specified chpid
581  * and wait for completion. On success return 0. Return non-zero otherwise.
599  * sclp_chp_read_info - perform read channel-path information sclp command
600  * @info: resulting channel-path information data
602  * Perform read channel-path information sclp command and wait for completion.
603  * On success, store channel-path information in @info and return 0. Return
604  * non-zero otherwise.
609 	int rc;  in sclp_chp_read_info()  local
612 		return -EOPNOTSUPP;  in sclp_chp_read_info()
616 		return -ENOMEM;  in sclp_chp_read_info()
617 	sccb->header.length = sizeof(*sccb);  in sclp_chp_read_info()
618 	rc = sclp_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb);  in sclp_chp_read_info()
619 	if (rc)  in sclp_chp_read_info()
621 	if (sccb->header.response_code != 0x0010) {  in sclp_chp_read_info()
622 		pr_warn("read channel-path info failed (response=0x%04x)\n",  in sclp_chp_read_info()
623 			sccb->header.response_code);  in sclp_chp_read_info()
624 		rc = -EIO;  in sclp_chp_read_info()
627 	memcpy(info->recognized, sccb->recognized, SCLP_CHP_INFO_MASK_SIZE);  in sclp_chp_read_info()
628 	memcpy(info->standby, sccb->standby, SCLP_CHP_INFO_MASK_SIZE);  in sclp_chp_read_info()
629 	memcpy(info->configured, sccb->configured, SCLP_CHP_INFO_MASK_SIZE);  in sclp_chp_read_info()
632 	return rc;  in sclp_chp_read_info()