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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / s390 / cio / chsc.c
blob6392a1b95b028097421b0262ac566c2e5854db57
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * S/390 common I/O routines -- channel subsystem call
4 *
5 * Copyright IBM Corp. 1999,2012
6 * Author(s): Ingo Adlung (adlung@de.ibm.com)
7 * Cornelia Huck (cornelia.huck@de.ibm.com)
8 * Arnd Bergmann (arndb@de.ibm.com)
9 */
10
11 #define KMSG_COMPONENT "cio"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/slab.h>
16 #include <linux/init.h>
17 #include <linux/device.h>
18 #include <linux/mutex.h>
19 #include <linux/pci.h>
20
21 #include <asm/cio.h>
22 #include <asm/chpid.h>
23 #include <asm/chsc.h>
24 #include <asm/crw.h>
25 #include <asm/isc.h>
26 #include <asm/ebcdic.h>
27 #include <asm/ap.h>
28
29 #include "css.h"
30 #include "cio.h"
31 #include "cio_debug.h"
32 #include "ioasm.h"
33 #include "chp.h"
34 #include "chsc.h"
35
36 static void *sei_page;
37 static void *chsc_page;
38 static DEFINE_SPINLOCK(chsc_page_lock);
39
40 /**
41 * chsc_error_from_response() - convert a chsc response to an error
42 * @response: chsc response code
43 *
44 * Returns an appropriate Linux error code for @response.
45 */
46 int chsc_error_from_response(int response)
47 {
48 switch (response) {
49 case 0x0001:
50 return 0;
51 case 0x0002:
52 case 0x0003:
53 case 0x0006:
54 case 0x0007:
55 case 0x0008:
56 case 0x000a:
57 case 0x0104:
58 return -EINVAL;
59 case 0x0004:
60 return -EOPNOTSUPP;
61 case 0x000b:
62 case 0x0107: /* "Channel busy" for the op 0x003d */
63 return -EBUSY;
64 case 0x0100:
65 case 0x0102:
66 return -ENOMEM;
67 default:
68 return -EIO;
69 }
70 }
71 EXPORT_SYMBOL_GPL(chsc_error_from_response);
72
73 struct chsc_ssd_area {
74 struct chsc_header request;
75 u16 :10;
76 u16 ssid:2;
77 u16 :4;
78 u16 f_sch; /* first subchannel */
79 u16 :16;
80 u16 l_sch; /* last subchannel */
81 u32 :32;
82 struct chsc_header response;
83 u32 :32;
84 u8 sch_valid : 1;
85 u8 dev_valid : 1;
86 u8 st : 3; /* subchannel type */
87 u8 zeroes : 3;
88 u8 unit_addr; /* unit address */
89 u16 devno; /* device number */
90 u8 path_mask;
91 u8 fla_valid_mask;
92 u16 sch; /* subchannel */
93 u8 chpid[8]; /* chpids 0-7 */
94 u16 fla[8]; /* full link addresses 0-7 */
95 } __packed __aligned(PAGE_SIZE);
96
97 int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
98 {
99 struct chsc_ssd_area *ssd_area;
100 unsigned long flags;
101 int ccode;
102 int ret;
103 int i;
104 int mask;
105
106 spin_lock_irqsave(&chsc_page_lock, flags);
107 memset(chsc_page, 0, PAGE_SIZE);
108 ssd_area = chsc_page;
109 ssd_area->request.length = 0x0010;
110 ssd_area->request.code = 0x0004;
111 ssd_area->ssid = schid.ssid;
112 ssd_area->f_sch = schid.sch_no;
113 ssd_area->l_sch = schid.sch_no;
114
115 ccode = chsc(ssd_area);
116 /* Check response. */
117 if (ccode > 0) {
118 ret = (ccode == 3) ? -ENODEV : -EBUSY;
119 goto out;
120 }
121 ret = chsc_error_from_response(ssd_area->response.code);
122 if (ret != 0) {
123 CIO_MSG_EVENT(2, "chsc: ssd failed for 0.%x.%04x (rc=%04x)\n",
124 schid.ssid, schid.sch_no,
125 ssd_area->response.code);
126 goto out;
127 }
128 if (!ssd_area->sch_valid) {
129 ret = -ENODEV;
130 goto out;
131 }
132 /* Copy data */
133 ret = 0;
134 memset(ssd, 0, sizeof(struct chsc_ssd_info));
135 if ((ssd_area->st != SUBCHANNEL_TYPE_IO) &&
136 (ssd_area->st != SUBCHANNEL_TYPE_MSG))
137 goto out;
138 ssd->path_mask = ssd_area->path_mask;
139 ssd->fla_valid_mask = ssd_area->fla_valid_mask;
140 for (i = 0; i < 8; i++) {
141 mask = 0x80 >> i;
142 if (ssd_area->path_mask & mask) {
143 chp_id_init(&ssd->chpid[i]);
144 ssd->chpid[i].id = ssd_area->chpid[i];
145 }
146 if (ssd_area->fla_valid_mask & mask)
147 ssd->fla[i] = ssd_area->fla[i];
148 }
149 out:
150 spin_unlock_irqrestore(&chsc_page_lock, flags);
151 return ret;
152 }
153
154 /**
155 * chsc_ssqd() - store subchannel QDIO data (SSQD)
156 * @schid: id of the subchannel on which SSQD is performed
157 * @ssqd: request and response block for SSQD
158 *
159 * Returns 0 on success.
160 */
161 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd)
162 {
163 memset(ssqd, 0, sizeof(*ssqd));
164 ssqd->request.length = 0x0010;
165 ssqd->request.code = 0x0024;
166 ssqd->first_sch = schid.sch_no;
167 ssqd->last_sch = schid.sch_no;
168 ssqd->ssid = schid.ssid;
169
170 if (chsc(ssqd))
171 return -EIO;
172
173 return chsc_error_from_response(ssqd->response.code);
174 }
175 EXPORT_SYMBOL_GPL(chsc_ssqd);
176
177 /**
178 * chsc_sadc() - set adapter device controls (SADC)
179 * @schid: id of the subchannel on which SADC is performed
180 * @scssc: request and response block for SADC
181 * @summary_indicator_addr: summary indicator address
182 * @subchannel_indicator_addr: subchannel indicator address
183 *
184 * Returns 0 on success.
185 */
186 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
187 u64 summary_indicator_addr, u64 subchannel_indicator_addr)
188 {
189 memset(scssc, 0, sizeof(*scssc));
190 scssc->request.length = 0x0fe0;
191 scssc->request.code = 0x0021;
192 scssc->operation_code = 0;
193
194 scssc->summary_indicator_addr = summary_indicator_addr;
195 scssc->subchannel_indicator_addr = subchannel_indicator_addr;
196
197 scssc->ks = PAGE_DEFAULT_KEY >> 4;
198 scssc->kc = PAGE_DEFAULT_KEY >> 4;
199 scssc->isc = QDIO_AIRQ_ISC;
200 scssc->schid = schid;
201
202 /* enable the time delay disablement facility */
203 if (css_general_characteristics.aif_tdd)
204 scssc->word_with_d_bit = 0x10000000;
205
206 if (chsc(scssc))
207 return -EIO;
208
209 return chsc_error_from_response(scssc->response.code);
210 }
211 EXPORT_SYMBOL_GPL(chsc_sadc);
212
213 static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data)
214 {
215 spin_lock_irq(sch->lock);
216 if (sch->driver && sch->driver->chp_event)
217 if (sch->driver->chp_event(sch, data, CHP_OFFLINE) != 0)
218 goto out_unreg;
219 spin_unlock_irq(sch->lock);
220 return 0;
221
222 out_unreg:
223 sch->lpm = 0;
224 spin_unlock_irq(sch->lock);
225 css_schedule_eval(sch->schid);
226 return 0;
227 }
228
229 void chsc_chp_offline(struct chp_id chpid)
230 {
231 struct channel_path *chp = chpid_to_chp(chpid);
232 struct chp_link link;
233 char dbf_txt[15];
234
235 sprintf(dbf_txt, "chpr%x.%02x", chpid.cssid, chpid.id);
236 CIO_TRACE_EVENT(2, dbf_txt);
237
238 if (chp_get_status(chpid) <= 0)
239 return;
240 memset(&link, 0, sizeof(struct chp_link));
241 link.chpid = chpid;
242 /* Wait until previous actions have settled. */
243 css_wait_for_slow_path();
244
245 mutex_lock(&chp->lock);
246 chp_update_desc(chp);
247 mutex_unlock(&chp->lock);
248
249 for_each_subchannel_staged(s390_subchannel_remove_chpid, NULL, &link);
250 }
251
252 static int __s390_process_res_acc(struct subchannel *sch, void *data)
253 {
254 spin_lock_irq(sch->lock);
255 if (sch->driver && sch->driver->chp_event)
256 sch->driver->chp_event(sch, data, CHP_ONLINE);
257 spin_unlock_irq(sch->lock);
258
259 return 0;
260 }
261
262 static void s390_process_res_acc(struct chp_link *link)
263 {
264 char dbf_txt[15];
265
266 sprintf(dbf_txt, "accpr%x.%02x", link->chpid.cssid,
267 link->chpid.id);
268 CIO_TRACE_EVENT( 2, dbf_txt);
269 if (link->fla != 0) {
270 sprintf(dbf_txt, "fla%x", link->fla);
271 CIO_TRACE_EVENT( 2, dbf_txt);
272 }
273 /* Wait until previous actions have settled. */
274 css_wait_for_slow_path();
275 /*
276 * I/O resources may have become accessible.
277 * Scan through all subchannels that may be concerned and
278 * do a validation on those.
279 * The more information we have (info), the less scanning
280 * will we have to do.
281 */
282 for_each_subchannel_staged(__s390_process_res_acc, NULL, link);
283 css_schedule_reprobe();
284 }
285
286 struct chsc_sei_nt0_area {
287 u8 flags;
288 u8 vf; /* validity flags */
289 u8 rs; /* reporting source */
290 u8 cc; /* content code */
291 u16 fla; /* full link address */
292 u16 rsid; /* reporting source id */
293 u32 reserved1;
294 u32 reserved2;
295 /* ccdf has to be big enough for a link-incident record */
296 u8 ccdf[PAGE_SIZE - 24 - 16]; /* content-code dependent field */
297 } __packed;
298
299 struct chsc_sei_nt2_area {
300 u8 flags; /* p and v bit */
301 u8 reserved1;
302 u8 reserved2;
303 u8 cc; /* content code */
304 u32 reserved3[13];
305 u8 ccdf[PAGE_SIZE - 24 - 56]; /* content-code dependent field */
306 } __packed;
307
308 #define CHSC_SEI_NT0 (1ULL << 63)
309 #define CHSC_SEI_NT2 (1ULL << 61)
310
311 struct chsc_sei {
312 struct chsc_header request;
313 u32 reserved1;
314 u64 ntsm; /* notification type mask */
315 struct chsc_header response;
316 u32 :24;
317 u8 nt;
318 union {
319 struct chsc_sei_nt0_area nt0_area;
320 struct chsc_sei_nt2_area nt2_area;
321 u8 nt_area[PAGE_SIZE - 24];
322 } u;
323 } __packed __aligned(PAGE_SIZE);
324
325 /*
326 * Link Incident Record as defined in SA22-7202, "ESCON I/O Interface"
327 */
328
329 #define LIR_IQ_CLASS_INFO 0
330 #define LIR_IQ_CLASS_DEGRADED 1
331 #define LIR_IQ_CLASS_NOT_OPERATIONAL 2
332
333 struct lir {
334 struct {
335 u32 null:1;
336 u32 reserved:3;
337 u32 class:2;
338 u32 reserved2:2;
339 } __packed iq;
340 u32 ic:8;
341 u32 reserved:16;
342 struct node_descriptor incident_node;
343 struct node_descriptor attached_node;
344 u8 reserved2[32];
345 } __packed;
346
347 #define PARAMS_LEN 10 /* PARAMS=xx,xxxxxx */
348 #define NODEID_LEN 35 /* NODEID=tttttt/mdl,mmm.ppssssssssssss,xxxx */
349
350 /* Copy EBCIDC text, convert to ASCII and optionally add delimiter. */
351 static char *store_ebcdic(char *dest, const char *src, unsigned long len,
352 char delim)
353 {
354 memcpy(dest, src, len);
355 EBCASC(dest, len);
356
357 if (delim)
358 dest[len++] = delim;
359
360 return dest + len;
361 }
362
363 /* Format node ID and parameters for output in LIR log message. */
364 static void format_node_data(char *params, char *id, struct node_descriptor *nd)
365 {
366 memset(params, 0, PARAMS_LEN);
367 memset(id, 0, NODEID_LEN);
368
369 if (nd->validity != ND_VALIDITY_VALID) {
370 strncpy(params, "n/a", PARAMS_LEN - 1);
371 strncpy(id, "n/a", NODEID_LEN - 1);
372 return;
373 }
374
375 /* PARAMS=xx,xxxxxx */
376 snprintf(params, PARAMS_LEN, "%02x,%06x", nd->byte0, nd->params);
377 /* NODEID=tttttt/mdl,mmm.ppssssssssssss,xxxx */
378 id = store_ebcdic(id, nd->type, sizeof(nd->type), '/');
379 id = store_ebcdic(id, nd->model, sizeof(nd->model), ',');
380 id = store_ebcdic(id, nd->manufacturer, sizeof(nd->manufacturer), '.');
381 id = store_ebcdic(id, nd->plant, sizeof(nd->plant), 0);
382 id = store_ebcdic(id, nd->seq, sizeof(nd->seq), ',');
383 sprintf(id, "%04X", nd->tag);
384 }
385
386 static void chsc_process_sei_link_incident(struct chsc_sei_nt0_area *sei_area)
387 {
388 struct lir *lir = (struct lir *) &sei_area->ccdf;
389 char iuparams[PARAMS_LEN], iunodeid[NODEID_LEN], auparams[PARAMS_LEN],
390 aunodeid[NODEID_LEN];
391
392 CIO_CRW_EVENT(4, "chsc: link incident (rs=%02x, rs_id=%04x, iq=%02x)\n",
393 sei_area->rs, sei_area->rsid, sei_area->ccdf[0]);
394
395 /* Ignore NULL Link Incident Records. */
396 if (lir->iq.null)
397 return;
398
399 /* Inform user that a link requires maintenance actions because it has
400 * become degraded or not operational. Note that this log message is
401 * the primary intention behind a Link Incident Record. */
402
403 format_node_data(iuparams, iunodeid, &lir->incident_node);
404 format_node_data(auparams, aunodeid, &lir->attached_node);
405
406 switch (lir->iq.class) {
407 case LIR_IQ_CLASS_DEGRADED:
408 pr_warn("Link degraded: RS=%02x RSID=%04x IC=%02x "
409 "IUPARAMS=%s IUNODEID=%s AUPARAMS=%s AUNODEID=%s\n",
410 sei_area->rs, sei_area->rsid, lir->ic, iuparams,
411 iunodeid, auparams, aunodeid);
412 break;
413 case LIR_IQ_CLASS_NOT_OPERATIONAL:
414 pr_err("Link stopped: RS=%02x RSID=%04x IC=%02x "
415 "IUPARAMS=%s IUNODEID=%s AUPARAMS=%s AUNODEID=%s\n",
416 sei_area->rs, sei_area->rsid, lir->ic, iuparams,
417 iunodeid, auparams, aunodeid);
418 break;
419 default:
420 break;
421 }
422 }
423
424 static void chsc_process_sei_res_acc(struct chsc_sei_nt0_area *sei_area)
425 {
426 struct channel_path *chp;
427 struct chp_link link;
428 struct chp_id chpid;
429 int status;
430
431 CIO_CRW_EVENT(4, "chsc: resource accessibility event (rs=%02x, "
432 "rs_id=%04x)\n", sei_area->rs, sei_area->rsid);
433 if (sei_area->rs != 4)
434 return;
435 chp_id_init(&chpid);
436 chpid.id = sei_area->rsid;
437 /* allocate a new channel path structure, if needed */
438 status = chp_get_status(chpid);
439 if (!status)
440 return;
441
442 if (status < 0) {
443 chp_new(chpid);
444 } else {
445 chp = chpid_to_chp(chpid);
446 mutex_lock(&chp->lock);
447 chp_update_desc(chp);
448 mutex_unlock(&chp->lock);
449 }
450 memset(&link, 0, sizeof(struct chp_link));
451 link.chpid = chpid;
452 if ((sei_area->vf & 0xc0) != 0) {
453 link.fla = sei_area->fla;
454 if ((sei_area->vf & 0xc0) == 0xc0)
455 /* full link address */
456 link.fla_mask = 0xffff;
457 else
458 /* link address */
459 link.fla_mask = 0xff00;
460 }
461 s390_process_res_acc(&link);
462 }
463
464 static void chsc_process_sei_chp_avail(struct chsc_sei_nt0_area *sei_area)
465 {
466 struct channel_path *chp;
467 struct chp_id chpid;
468 u8 *data;
469 int num;
470
471 CIO_CRW_EVENT(4, "chsc: channel path availability information\n");
472 if (sei_area->rs != 0)
473 return;
474 data = sei_area->ccdf;
475 chp_id_init(&chpid);
476 for (num = 0; num <= __MAX_CHPID; num++) {
477 if (!chp_test_bit(data, num))
478 continue;
479 chpid.id = num;
480
481 CIO_CRW_EVENT(4, "Update information for channel path "
482 "%x.%02x\n", chpid.cssid, chpid.id);
483 chp = chpid_to_chp(chpid);
484 if (!chp) {
485 chp_new(chpid);
486 continue;
487 }
488 mutex_lock(&chp->lock);
489 chp_update_desc(chp);
490 mutex_unlock(&chp->lock);
491 }
492 }
493
494 struct chp_config_data {
495 u8 map[32];
496 u8 op;
497 u8 pc;
498 };
499
500 static void chsc_process_sei_chp_config(struct chsc_sei_nt0_area *sei_area)
501 {
502 struct chp_config_data *data;
503 struct chp_id chpid;
504 int num;
505 char *events[3] = {"configure", "deconfigure", "cancel deconfigure"};
506
507 CIO_CRW_EVENT(4, "chsc: channel-path-configuration notification\n");
508 if (sei_area->rs != 0)
509 return;
510 data = (struct chp_config_data *) &(sei_area->ccdf);
511 chp_id_init(&chpid);
512 for (num = 0; num <= __MAX_CHPID; num++) {
513 if (!chp_test_bit(data->map, num))
514 continue;
515 chpid.id = num;
516 pr_notice("Processing %s for channel path %x.%02x\n",
517 events[data->op], chpid.cssid, chpid.id);
518 switch (data->op) {
519 case 0:
520 chp_cfg_schedule(chpid, 1);
521 break;
522 case 1:
523 chp_cfg_schedule(chpid, 0);
524 break;
525 case 2:
526 chp_cfg_cancel_deconfigure(chpid);
527 break;
528 }
529 }
530 }
531
532 static void chsc_process_sei_scm_change(struct chsc_sei_nt0_area *sei_area)
533 {
534 int ret;
535
536 CIO_CRW_EVENT(4, "chsc: scm change notification\n");
537 if (sei_area->rs != 7)
538 return;
539
540 ret = scm_update_information();
541 if (ret)
542 CIO_CRW_EVENT(0, "chsc: updating change notification"
543 " failed (rc=%d).\n", ret);
544 }
545
546 static void chsc_process_sei_scm_avail(struct chsc_sei_nt0_area *sei_area)
547 {
548 int ret;
549
550 CIO_CRW_EVENT(4, "chsc: scm available information\n");
551 if (sei_area->rs != 7)
552 return;
553
554 ret = scm_process_availability_information();
555 if (ret)
556 CIO_CRW_EVENT(0, "chsc: process availability information"
557 " failed (rc=%d).\n", ret);
558 }
559
560 static void chsc_process_sei_ap_cfg_chg(struct chsc_sei_nt0_area *sei_area)
561 {
562 CIO_CRW_EVENT(3, "chsc: ap config changed\n");
563 if (sei_area->rs != 5)
564 return;
565
566 ap_bus_cfg_chg();
567 }
568
569 static void chsc_process_sei_nt2(struct chsc_sei_nt2_area *sei_area)
570 {
571 switch (sei_area->cc) {
572 case 1:
573 zpci_event_error(sei_area->ccdf);
574 break;
575 case 2:
576 zpci_event_availability(sei_area->ccdf);
577 break;
578 default:
579 CIO_CRW_EVENT(2, "chsc: sei nt2 unhandled cc=%d\n",
580 sei_area->cc);
581 break;
582 }
583 }
584
585 static void chsc_process_sei_nt0(struct chsc_sei_nt0_area *sei_area)
586 {
587 /* which kind of information was stored? */
588 switch (sei_area->cc) {
589 case 1: /* link incident*/
590 chsc_process_sei_link_incident(sei_area);
591 break;
592 case 2: /* i/o resource accessibility */
593 chsc_process_sei_res_acc(sei_area);
594 break;
595 case 3: /* ap config changed */
596 chsc_process_sei_ap_cfg_chg(sei_area);
597 break;
598 case 7: /* channel-path-availability information */
599 chsc_process_sei_chp_avail(sei_area);
600 break;
601 case 8: /* channel-path-configuration notification */
602 chsc_process_sei_chp_config(sei_area);
603 break;
604 case 12: /* scm change notification */
605 chsc_process_sei_scm_change(sei_area);
606 break;
607 case 14: /* scm available notification */
608 chsc_process_sei_scm_avail(sei_area);
609 break;
610 default: /* other stuff */
611 CIO_CRW_EVENT(2, "chsc: sei nt0 unhandled cc=%d\n",
612 sei_area->cc);
613 break;
614 }
615
616 /* Check if we might have lost some information. */
617 if (sei_area->flags & 0x40) {
618 CIO_CRW_EVENT(2, "chsc: event overflow\n");
619 css_schedule_eval_all();
620 }
621 }
622
623 static void chsc_process_event_information(struct chsc_sei *sei, u64 ntsm)
624 {
625 static int ntsm_unsupported;
626
627 while (true) {
628 memset(sei, 0, sizeof(*sei));
629 sei->request.length = 0x0010;
630 sei->request.code = 0x000e;
631 if (!ntsm_unsupported)
632 sei->ntsm = ntsm;
633
634 if (chsc(sei))
635 break;
636
637 if (sei->response.code != 0x0001) {
638 CIO_CRW_EVENT(2, "chsc: sei failed (rc=%04x, ntsm=%llx)\n",
639 sei->response.code, sei->ntsm);
640
641 if (sei->response.code == 3 && sei->ntsm) {
642 /* Fallback for old firmware. */
643 ntsm_unsupported = 1;
644 continue;
645 }
646 break;
647 }
648
649 CIO_CRW_EVENT(2, "chsc: sei successful (nt=%d)\n", sei->nt);
650 switch (sei->nt) {
651 case 0:
652 chsc_process_sei_nt0(&sei->u.nt0_area);
653 break;
654 case 2:
655 chsc_process_sei_nt2(&sei->u.nt2_area);
656 break;
657 default:
658 CIO_CRW_EVENT(2, "chsc: unhandled nt: %d\n", sei->nt);
659 break;
660 }
661
662 if (!(sei->u.nt0_area.flags & 0x80))
663 break;
664 }
665 }
666
667 /*
668 * Handle channel subsystem related CRWs.
669 * Use store event information to find out what's going on.
670 *
671 * Note: Access to sei_page is serialized through machine check handler
672 * thread, so no need for locking.
673 */
674 static void chsc_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
675 {
676 struct chsc_sei *sei = sei_page;
677
678 if (overflow) {
679 css_schedule_eval_all();
680 return;
681 }
682 CIO_CRW_EVENT(2, "CRW reports slct=%d, oflw=%d, "
683 "chn=%d, rsc=%X, anc=%d, erc=%X, rsid=%X\n",
684 crw0->slct, crw0->oflw, crw0->chn, crw0->rsc, crw0->anc,
685 crw0->erc, crw0->rsid);
686
687 CIO_TRACE_EVENT(2, "prcss");
688 chsc_process_event_information(sei, CHSC_SEI_NT0 | CHSC_SEI_NT2);
689 }
690
691 void chsc_chp_online(struct chp_id chpid)
692 {
693 struct channel_path *chp = chpid_to_chp(chpid);
694 struct chp_link link;
695 char dbf_txt[15];
696
697 sprintf(dbf_txt, "cadd%x.%02x", chpid.cssid, chpid.id);
698 CIO_TRACE_EVENT(2, dbf_txt);
699
700 if (chp_get_status(chpid) != 0) {
701 memset(&link, 0, sizeof(struct chp_link));
702 link.chpid = chpid;
703 /* Wait until previous actions have settled. */
704 css_wait_for_slow_path();
705
706 mutex_lock(&chp->lock);
707 chp_update_desc(chp);
708 mutex_unlock(&chp->lock);
709
710 for_each_subchannel_staged(__s390_process_res_acc, NULL,
711 &link);
712 css_schedule_reprobe();
713 }
714 }
715
716 static void __s390_subchannel_vary_chpid(struct subchannel *sch,
717 struct chp_id chpid, int on)
718 {
719 unsigned long flags;
720 struct chp_link link;
721
722 memset(&link, 0, sizeof(struct chp_link));
723 link.chpid = chpid;
724 spin_lock_irqsave(sch->lock, flags);
725 if (sch->driver && sch->driver->chp_event)
726 sch->driver->chp_event(sch, &link,
727 on ? CHP_VARY_ON : CHP_VARY_OFF);
728 spin_unlock_irqrestore(sch->lock, flags);
729 }
730
731 static int s390_subchannel_vary_chpid_off(struct subchannel *sch, void *data)
732 {
733 struct chp_id *chpid = data;
734
735 __s390_subchannel_vary_chpid(sch, *chpid, 0);
736 return 0;
737 }
738
739 static int s390_subchannel_vary_chpid_on(struct subchannel *sch, void *data)
740 {
741 struct chp_id *chpid = data;
742
743 __s390_subchannel_vary_chpid(sch, *chpid, 1);
744 return 0;
745 }
746
747 /**
748 * chsc_chp_vary - propagate channel-path vary operation to subchannels
749 * @chpid: channl-path ID
750 * @on: non-zero for vary online, zero for vary offline
751 */
752 int chsc_chp_vary(struct chp_id chpid, int on)
753 {
754 struct channel_path *chp = chpid_to_chp(chpid);
755
756 /* Wait until previous actions have settled. */
757 css_wait_for_slow_path();
758 /*
759 * Redo PathVerification on the devices the chpid connects to
760 */
761 if (on) {
762 /* Try to update the channel path description. */
763 chp_update_desc(chp);
764 for_each_subchannel_staged(s390_subchannel_vary_chpid_on,
765 NULL, &chpid);
766 css_schedule_reprobe();
767 } else
768 for_each_subchannel_staged(s390_subchannel_vary_chpid_off,
769 NULL, &chpid);
770
771 return 0;
772 }
773
774 static void
775 chsc_remove_cmg_attr(struct channel_subsystem *css)
776 {
777 int i;
778
779 for (i = 0; i <= __MAX_CHPID; i++) {
780 if (!css->chps[i])
781 continue;
782 chp_remove_cmg_attr(css->chps[i]);
783 }
784 }
785
786 static int
787 chsc_add_cmg_attr(struct channel_subsystem *css)
788 {
789 int i, ret;
790
791 ret = 0;
792 for (i = 0; i <= __MAX_CHPID; i++) {
793 if (!css->chps[i])
794 continue;
795 ret = chp_add_cmg_attr(css->chps[i]);
796 if (ret)
797 goto cleanup;
798 }
799 return ret;
800 cleanup:
801 for (--i; i >= 0; i--) {
802 if (!css->chps[i])
803 continue;
804 chp_remove_cmg_attr(css->chps[i]);
805 }
806 return ret;
807 }
808
809 int __chsc_do_secm(struct channel_subsystem *css, int enable)
810 {
811 struct {
812 struct chsc_header request;
813 u32 operation_code : 2;
814 u32 : 30;
815 u32 key : 4;
816 u32 : 28;
817 u32 zeroes1;
818 u32 cub_addr1;
819 u32 zeroes2;
820 u32 cub_addr2;
821 u32 reserved[13];
822 struct chsc_header response;
823 u32 status : 8;
824 u32 : 4;
825 u32 fmt : 4;
826 u32 : 16;
827 } *secm_area;
828 unsigned long flags;
829 int ret, ccode;
830
831 spin_lock_irqsave(&chsc_page_lock, flags);
832 memset(chsc_page, 0, PAGE_SIZE);
833 secm_area = chsc_page;
834 secm_area->request.length = 0x0050;
835 secm_area->request.code = 0x0016;
836
837 secm_area->key = PAGE_DEFAULT_KEY >> 4;
838 secm_area->cub_addr1 = (u64)(unsigned long)css->cub_addr1;
839 secm_area->cub_addr2 = (u64)(unsigned long)css->cub_addr2;
840
841 secm_area->operation_code = enable ? 0 : 1;
842
843 ccode = chsc(secm_area);
844 if (ccode > 0) {
845 ret = (ccode == 3) ? -ENODEV : -EBUSY;
846 goto out;
847 }
848
849 switch (secm_area->response.code) {
850 case 0x0102:
851 case 0x0103:
852 ret = -EINVAL;
853 break;
854 default:
855 ret = chsc_error_from_response(secm_area->response.code);
856 }
857 if (ret != 0)
858 CIO_CRW_EVENT(2, "chsc: secm failed (rc=%04x)\n",
859 secm_area->response.code);
860 out:
861 spin_unlock_irqrestore(&chsc_page_lock, flags);
862 return ret;
863 }
864
865 int
866 chsc_secm(struct channel_subsystem *css, int enable)
867 {
868 int ret;
869
870 if (enable && !css->cm_enabled) {
871 css->cub_addr1 = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
872 css->cub_addr2 = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
873 if (!css->cub_addr1 || !css->cub_addr2) {
874 free_page((unsigned long)css->cub_addr1);
875 free_page((unsigned long)css->cub_addr2);
876 return -ENOMEM;
877 }
878 }
879 ret = __chsc_do_secm(css, enable);
880 if (!ret) {
881 css->cm_enabled = enable;
882 if (css->cm_enabled) {
883 ret = chsc_add_cmg_attr(css);
884 if (ret) {
885 __chsc_do_secm(css, 0);
886 css->cm_enabled = 0;
887 }
888 } else
889 chsc_remove_cmg_attr(css);
890 }
891 if (!css->cm_enabled) {
892 free_page((unsigned long)css->cub_addr1);
893 free_page((unsigned long)css->cub_addr2);
894 }
895 return ret;
896 }
897
898 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
899 int c, int m, void *page)
900 {
901 struct chsc_scpd *scpd_area;
902 int ccode, ret;
903
904 if ((rfmt == 1 || rfmt == 0) && c == 1 &&
905 !css_general_characteristics.fcs)
906 return -EINVAL;
907 if ((rfmt == 2) && !css_general_characteristics.cib)
908 return -EINVAL;
909 if ((rfmt == 3) && !css_general_characteristics.util_str)
910 return -EINVAL;
911
912 memset(page, 0, PAGE_SIZE);
913 scpd_area = page;
914 scpd_area->request.length = 0x0010;
915 scpd_area->request.code = 0x0002;
916 scpd_area->cssid = chpid.cssid;
917 scpd_area->first_chpid = chpid.id;
918 scpd_area->last_chpid = chpid.id;
919 scpd_area->m = m;
920 scpd_area->c = c;
921 scpd_area->fmt = fmt;
922 scpd_area->rfmt = rfmt;
923
924 ccode = chsc(scpd_area);
925 if (ccode > 0)
926 return (ccode == 3) ? -ENODEV : -EBUSY;
927
928 ret = chsc_error_from_response(scpd_area->response.code);
929 if (ret)
930 CIO_CRW_EVENT(2, "chsc: scpd failed (rc=%04x)\n",
931 scpd_area->response.code);
932 return ret;
933 }
934 EXPORT_SYMBOL_GPL(chsc_determine_channel_path_desc);
935
936 #define chsc_det_chp_desc(FMT, c) \
937 int chsc_determine_fmt##FMT##_channel_path_desc( \
938 struct chp_id chpid, struct channel_path_desc_fmt##FMT *desc) \
939 { \
940 struct chsc_scpd *scpd_area; \
941 unsigned long flags; \
942 int ret; \
943 \
944 spin_lock_irqsave(&chsc_page_lock, flags); \
945 scpd_area = chsc_page; \
946 ret = chsc_determine_channel_path_desc(chpid, 0, FMT, c, 0, \
947 scpd_area); \
948 if (ret) \
949 goto out; \
950 \
951 memcpy(desc, scpd_area->data, sizeof(*desc)); \
952 out: \
953 spin_unlock_irqrestore(&chsc_page_lock, flags); \
954 return ret; \
955 }
956
957 chsc_det_chp_desc(0, 0)
958 chsc_det_chp_desc(1, 1)
959 chsc_det_chp_desc(3, 0)
960
961 static void
962 chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv,
963 struct cmg_chars *chars)
964 {
965 int i, mask;
966
967 for (i = 0; i < NR_MEASUREMENT_CHARS; i++) {
968 mask = 0x80 >> (i + 3);
969 if (cmcv & mask)
970 chp->cmg_chars.values[i] = chars->values[i];
971 else
972 chp->cmg_chars.values[i] = 0;
973 }
974 }
975
976 int chsc_get_channel_measurement_chars(struct channel_path *chp)
977 {
978 unsigned long flags;
979 int ccode, ret;
980
981 struct {
982 struct chsc_header request;
983 u32 : 24;
984 u32 first_chpid : 8;
985 u32 : 24;
986 u32 last_chpid : 8;
987 u32 zeroes1;
988 struct chsc_header response;
989 u32 zeroes2;
990 u32 not_valid : 1;
991 u32 shared : 1;
992 u32 : 22;
993 u32 chpid : 8;
994 u32 cmcv : 5;
995 u32 : 11;
996 u32 cmgq : 8;
997 u32 cmg : 8;
998 u32 zeroes3;
999 u32 data[NR_MEASUREMENT_CHARS];
1000 } *scmc_area;
1001
1002 chp->shared = -1;
1003 chp->cmg = -1;
1004
1005 if (!css_chsc_characteristics.scmc || !css_chsc_characteristics.secm)
1006 return -EINVAL;
1007
1008 spin_lock_irqsave(&chsc_page_lock, flags);
1009 memset(chsc_page, 0, PAGE_SIZE);
1010 scmc_area = chsc_page;
1011 scmc_area->request.length = 0x0010;
1012 scmc_area->request.code = 0x0022;
1013 scmc_area->first_chpid = chp->chpid.id;
1014 scmc_area->last_chpid = chp->chpid.id;
1015
1016 ccode = chsc(scmc_area);
1017 if (ccode > 0) {
1018 ret = (ccode == 3) ? -ENODEV : -EBUSY;
1019 goto out;
1020 }
1021
1022 ret = chsc_error_from_response(scmc_area->response.code);
1023 if (ret) {
1024 CIO_CRW_EVENT(2, "chsc: scmc failed (rc=%04x)\n",
1025 scmc_area->response.code);
1026 goto out;
1027 }
1028 if (scmc_area->not_valid)
1029 goto out;
1030
1031 chp->cmg = scmc_area->cmg;
1032 chp->shared = scmc_area->shared;
1033 if (chp->cmg != 2 && chp->cmg != 3) {
1034 /* No cmg-dependent data. */
1035 goto out;
1036 }
1037 chsc_initialize_cmg_chars(chp, scmc_area->cmcv,
1038 (struct cmg_chars *) &scmc_area->data);
1039 out:
1040 spin_unlock_irqrestore(&chsc_page_lock, flags);
1041 return ret;
1042 }
1043
1044 int __init chsc_init(void)
1045 {
1046 int ret;
1047
1048 sei_page = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
1049 chsc_page = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
1050 if (!sei_page || !chsc_page) {
1051 ret = -ENOMEM;
1052 goto out_err;
1053 }
1054 ret = crw_register_handler(CRW_RSC_CSS, chsc_process_crw);
1055 if (ret)
1056 goto out_err;
1057 return ret;
1058 out_err:
1059 free_page((unsigned long)chsc_page);
1060 free_page((unsigned long)sei_page);
1061 return ret;
1062 }
1063
1064 void __init chsc_init_cleanup(void)
1065 {
1066 crw_unregister_handler(CRW_RSC_CSS);
1067 free_page((unsigned long)chsc_page);
1068 free_page((unsigned long)sei_page);
1069 }
1070
1071 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code)
1072 {
1073 int ret;
1074
1075 sda_area->request.length = 0x0400;
1076 sda_area->request.code = 0x0031;
1077 sda_area->operation_code = operation_code;
1078
1079 ret = chsc(sda_area);
1080 if (ret > 0) {
1081 ret = (ret == 3) ? -ENODEV : -EBUSY;
1082 goto out;
1083 }
1084
1085 switch (sda_area->response.code) {
1086 case 0x0101:
1087 ret = -EOPNOTSUPP;
1088 break;
1089 default:
1090 ret = chsc_error_from_response(sda_area->response.code);
1091 }
1092 out:
1093 return ret;
1094 }
1095
1096 int chsc_enable_facility(int operation_code)
1097 {
1098 struct chsc_sda_area *sda_area;
1099 unsigned long flags;
1100 int ret;
1101
1102 spin_lock_irqsave(&chsc_page_lock, flags);
1103 memset(chsc_page, 0, PAGE_SIZE);
1104 sda_area = chsc_page;
1105
1106 ret = __chsc_enable_facility(sda_area, operation_code);
1107 if (ret != 0)
1108 CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n",
1109 operation_code, sda_area->response.code);
1110
1111 spin_unlock_irqrestore(&chsc_page_lock, flags);
1112 return ret;
1113 }
1114
1115 int __init chsc_get_cssid(int idx)
1116 {
1117 struct {
1118 struct chsc_header request;
1119 u8 atype;
1120 u32 : 24;
1121 u32 reserved1[6];
1122 struct chsc_header response;
1123 u32 reserved2[3];
1124 struct {
1125 u8 cssid;
1126 u32 : 24;
1127 } list[0];
1128 } *sdcal_area;
1129 int ret;
1130
1131 spin_lock_irq(&chsc_page_lock);
1132 memset(chsc_page, 0, PAGE_SIZE);
1133 sdcal_area = chsc_page;
1134 sdcal_area->request.length = 0x0020;
1135 sdcal_area->request.code = 0x0034;
1136 sdcal_area->atype = 4;
1137
1138 ret = chsc(sdcal_area);
1139 if (ret) {
1140 ret = (ret == 3) ? -ENODEV : -EBUSY;
1141 goto exit;
1142 }
1143
1144 ret = chsc_error_from_response(sdcal_area->response.code);
1145 if (ret) {
1146 CIO_CRW_EVENT(2, "chsc: sdcal failed (rc=%04x)\n",
1147 sdcal_area->response.code);
1148 goto exit;
1149 }
1150
1151 if ((addr_t) &sdcal_area->list[idx] <
1152 (addr_t) &sdcal_area->response + sdcal_area->response.length)
1153 ret = sdcal_area->list[idx].cssid;
1154 else
1155 ret = -ENODEV;
1156 exit:
1157 spin_unlock_irq(&chsc_page_lock);
1158 return ret;
1159 }
1160
1161 struct css_general_char css_general_characteristics;
1162 struct css_chsc_char css_chsc_characteristics;
1163
1164 int __init
1165 chsc_determine_css_characteristics(void)
1166 {
1167 unsigned long flags;
1168 int result;
1169 struct {
1170 struct chsc_header request;
1171 u32 reserved1;
1172 u32 reserved2;
1173 u32 reserved3;
1174 struct chsc_header response;
1175 u32 reserved4;
1176 u32 general_char[510];
1177 u32 chsc_char[508];
1178 } *scsc_area;
1179
1180 spin_lock_irqsave(&chsc_page_lock, flags);
1181 memset(chsc_page, 0, PAGE_SIZE);
1182 scsc_area = chsc_page;
1183 scsc_area->request.length = 0x0010;
1184 scsc_area->request.code = 0x0010;
1185
1186 result = chsc(scsc_area);
1187 if (result) {
1188 result = (result == 3) ? -ENODEV : -EBUSY;
1189 goto exit;
1190 }
1191
1192 result = chsc_error_from_response(scsc_area->response.code);
1193 if (result == 0) {
1194 memcpy(&css_general_characteristics, scsc_area->general_char,
1195 sizeof(css_general_characteristics));
1196 memcpy(&css_chsc_characteristics, scsc_area->chsc_char,
1197 sizeof(css_chsc_characteristics));
1198 } else
1199 CIO_CRW_EVENT(2, "chsc: scsc failed (rc=%04x)\n",
1200 scsc_area->response.code);
1201 exit:
1202 spin_unlock_irqrestore(&chsc_page_lock, flags);
1203 return result;
1204 }
1205
1206 EXPORT_SYMBOL_GPL(css_general_characteristics);
1207 EXPORT_SYMBOL_GPL(css_chsc_characteristics);
1208
1209 int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta)
1210 {
1211 struct {
1212 struct chsc_header request;
1213 unsigned int rsvd0;
1214 unsigned int op : 8;
1215 unsigned int rsvd1 : 8;
1216 unsigned int ctrl : 16;
1217 unsigned int rsvd2[5];
1218 struct chsc_header response;
1219 unsigned int rsvd3[3];
1220 u64 clock_delta;
1221 unsigned int rsvd4[2];
1222 } *rr;
1223 int rc;
1224
1225 memset(page, 0, PAGE_SIZE);
1226 rr = page;
1227 rr->request.length = 0x0020;
1228 rr->request.code = 0x0033;
1229 rr->op = op;
1230 rr->ctrl = ctrl;
1231 rc = chsc(rr);
1232 if (rc)
1233 return -EIO;
1234 rc = (rr->response.code == 0x0001) ? 0 : -EIO;
1235 if (clock_delta)
1236 *clock_delta = rr->clock_delta;
1237 return rc;
1238 }
1239
1240 int chsc_sstpi(void *page, void *result, size_t size)
1241 {
1242 struct {
1243 struct chsc_header request;
1244 unsigned int rsvd0[3];
1245 struct chsc_header response;
1246 char data[];
1247 } *rr;
1248 int rc;
1249
1250 memset(page, 0, PAGE_SIZE);
1251 rr = page;
1252 rr->request.length = 0x0010;
1253 rr->request.code = 0x0038;
1254 rc = chsc(rr);
1255 if (rc)
1256 return -EIO;
1257 memcpy(result, &rr->data, size);
1258 return (rr->response.code == 0x0001) ? 0 : -EIO;
1259 }
1260
1261 int chsc_siosl(struct subchannel_id schid)
1262 {
1263 struct {
1264 struct chsc_header request;
1265 u32 word1;
1266 struct subchannel_id sid;
1267 u32 word3;
1268 struct chsc_header response;
1269 u32 word[11];
1270 } *siosl_area;
1271 unsigned long flags;
1272 int ccode;
1273 int rc;
1274
1275 spin_lock_irqsave(&chsc_page_lock, flags);
1276 memset(chsc_page, 0, PAGE_SIZE);
1277 siosl_area = chsc_page;
1278 siosl_area->request.length = 0x0010;
1279 siosl_area->request.code = 0x0046;
1280 siosl_area->word1 = 0x80000000;
1281 siosl_area->sid = schid;
1282
1283 ccode = chsc(siosl_area);
1284 if (ccode > 0) {
1285 if (ccode == 3)
1286 rc = -ENODEV;
1287 else
1288 rc = -EBUSY;
1289 CIO_MSG_EVENT(2, "chsc: chsc failed for 0.%x.%04x (ccode=%d)\n",
1290 schid.ssid, schid.sch_no, ccode);
1291 goto out;
1292 }
1293 rc = chsc_error_from_response(siosl_area->response.code);
1294 if (rc)
1295 CIO_MSG_EVENT(2, "chsc: siosl failed for 0.%x.%04x (rc=%04x)\n",
1296 schid.ssid, schid.sch_no,
1297 siosl_area->response.code);
1298 else
1299 CIO_MSG_EVENT(4, "chsc: siosl succeeded for 0.%x.%04x\n",
1300 schid.ssid, schid.sch_no);
1301 out:
1302 spin_unlock_irqrestore(&chsc_page_lock, flags);
1303 return rc;
1304 }
1305 EXPORT_SYMBOL_GPL(chsc_siosl);
1306
1307 /**
1308 * chsc_scm_info() - store SCM information (SSI)
1309 * @scm_area: request and response block for SSI
1310 * @token: continuation token
1311 *
1312 * Returns 0 on success.
1313 */
1314 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token)
1315 {
1316 int ccode, ret;
1317
1318 memset(scm_area, 0, sizeof(*scm_area));
1319 scm_area->request.length = 0x0020;
1320 scm_area->request.code = 0x004C;
1321 scm_area->reqtok = token;
1322
1323 ccode = chsc(scm_area);
1324 if (ccode > 0) {
1325 ret = (ccode == 3) ? -ENODEV : -EBUSY;
1326 goto out;
1327 }
1328 ret = chsc_error_from_response(scm_area->response.code);
1329 if (ret != 0)
1330 CIO_MSG_EVENT(2, "chsc: scm info failed (rc=%04x)\n",
1331 scm_area->response.code);
1332 out:
1333 return ret;
1334 }
1335 EXPORT_SYMBOL_GPL(chsc_scm_info);
1336
1337 /**
1338 * chsc_pnso_brinfo() - Perform Network-Subchannel Operation, Bridge Info.
1339 * @schid: id of the subchannel on which PNSO is performed
1340 * @brinfo_area: request and response block for the operation
1341 * @resume_token: resume token for multiblock response
1342 * @cnc: Boolean change-notification control
1343 *
1344 * brinfo_area must be allocated by the caller with get_zeroed_page(GFP_KERNEL)
1345 *
1346 * Returns 0 on success.
1347 */
1348 int chsc_pnso_brinfo(struct subchannel_id schid,
1349 struct chsc_pnso_area *brinfo_area,
1350 struct chsc_brinfo_resume_token resume_token,
1351 int cnc)
1352 {
1353 memset(brinfo_area, 0, sizeof(*brinfo_area));
1354 brinfo_area->request.length = 0x0030;
1355 brinfo_area->request.code = 0x003d; /* network-subchannel operation */
1356 brinfo_area->m = schid.m;
1357 brinfo_area->ssid = schid.ssid;
1358 brinfo_area->sch = schid.sch_no;
1359 brinfo_area->cssid = schid.cssid;
1360 brinfo_area->oc = 0; /* Store-network-bridging-information list */
1361 brinfo_area->resume_token = resume_token;
1362 brinfo_area->n = (cnc != 0);
1363 if (chsc(brinfo_area))
1364 return -EIO;
1365 return chsc_error_from_response(brinfo_area->response.code);
1366 }
1367 EXPORT_SYMBOL_GPL(chsc_pnso_brinfo);
1368
1369 int chsc_sgib(u32 origin)
1370 {
1371 struct {
1372 struct chsc_header request;
1373 u16 op;
1374 u8 reserved01[2];
1375 u8 reserved02:4;
1376 u8 fmt:4;
1377 u8 reserved03[7];
1378 /* operation data area begin */
1379 u8 reserved04[4];
1380 u32 gib_origin;
1381 u8 reserved05[10];
1382 u8 aix;
1383 u8 reserved06[4029];
1384 struct chsc_header response;
1385 u8 reserved07[4];
1386 } *sgib_area;
1387 int ret;
1388
1389 spin_lock_irq(&chsc_page_lock);
1390 memset(chsc_page, 0, PAGE_SIZE);
1391 sgib_area = chsc_page;
1392 sgib_area->request.length = 0x0fe0;
1393 sgib_area->request.code = 0x0021;
1394 sgib_area->op = 0x1;
1395 sgib_area->gib_origin = origin;
1396
1397 ret = chsc(sgib_area);
1398 if (ret == 0)
1399 ret = chsc_error_from_response(sgib_area->response.code);
1400 spin_unlock_irq(&chsc_page_lock);
1401
1402 return ret;
1403 }
1404 EXPORT_SYMBOL_GPL(chsc_sgib);
Linux with added FPC-III support