Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/s390/cio/chsc.c | |
3 | * S/390 common I/O routines -- channel subsystem call | |
1da177e4 LT |
4 | * |
5 | * Copyright (C) 1999-2002 IBM Deutschland Entwicklung GmbH, | |
6 | * IBM Corporation | |
7 | * Author(s): Ingo Adlung (adlung@de.ibm.com) | |
4ce3b30c | 8 | * Cornelia Huck (cornelia.huck@de.ibm.com) |
1da177e4 LT |
9 | * Arnd Bergmann (arndb@de.ibm.com) |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
1da177e4 LT |
13 | #include <linux/slab.h> |
14 | #include <linux/init.h> | |
15 | #include <linux/device.h> | |
16 | ||
17 | #include <asm/cio.h> | |
e5854a58 | 18 | #include <asm/chpid.h> |
1da177e4 LT |
19 | |
20 | #include "css.h" | |
21 | #include "cio.h" | |
22 | #include "cio_debug.h" | |
23 | #include "ioasm.h" | |
e6b6e10a | 24 | #include "chp.h" |
1da177e4 LT |
25 | #include "chsc.h" |
26 | ||
1da177e4 LT |
27 | static void *sei_page; |
28 | ||
7ad6a249 PO |
29 | struct chsc_ssd_area { |
30 | struct chsc_header request; | |
31 | u16 :10; | |
32 | u16 ssid:2; | |
33 | u16 :4; | |
34 | u16 f_sch; /* first subchannel */ | |
35 | u16 :16; | |
36 | u16 l_sch; /* last subchannel */ | |
37 | u32 :32; | |
38 | struct chsc_header response; | |
39 | u32 :32; | |
40 | u8 sch_valid : 1; | |
41 | u8 dev_valid : 1; | |
42 | u8 st : 3; /* subchannel type */ | |
43 | u8 zeroes : 3; | |
44 | u8 unit_addr; /* unit address */ | |
45 | u16 devno; /* device number */ | |
46 | u8 path_mask; | |
47 | u8 fla_valid_mask; | |
48 | u16 sch; /* subchannel */ | |
49 | u8 chpid[8]; /* chpids 0-7 */ | |
50 | u16 fla[8]; /* full link addresses 0-7 */ | |
51 | } __attribute__ ((packed)); | |
52 | ||
53 | int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd) | |
1da177e4 | 54 | { |
7ad6a249 PO |
55 | unsigned long page; |
56 | struct chsc_ssd_area *ssd_area; | |
57 | int ccode; | |
58 | int ret; | |
59 | int i; | |
60 | int mask; | |
1da177e4 | 61 | |
7ad6a249 PO |
62 | page = get_zeroed_page(GFP_KERNEL | GFP_DMA); |
63 | if (!page) | |
64 | return -ENOMEM; | |
65 | ssd_area = (struct chsc_ssd_area *) page; | |
495a5b45 CH |
66 | ssd_area->request.length = 0x0010; |
67 | ssd_area->request.code = 0x0004; | |
7ad6a249 PO |
68 | ssd_area->ssid = schid.ssid; |
69 | ssd_area->f_sch = schid.sch_no; | |
70 | ssd_area->l_sch = schid.sch_no; | |
1da177e4 LT |
71 | |
72 | ccode = chsc(ssd_area); | |
7ad6a249 | 73 | /* Check response. */ |
1da177e4 | 74 | if (ccode > 0) { |
7ad6a249 PO |
75 | ret = (ccode == 3) ? -ENODEV : -EBUSY; |
76 | goto out_free; | |
1da177e4 | 77 | } |
7ad6a249 PO |
78 | if (ssd_area->response.code != 0x0001) { |
79 | CIO_MSG_EVENT(2, "chsc: ssd failed for 0.%x.%04x (rc=%04x)\n", | |
80 | schid.ssid, schid.sch_no, | |
1da177e4 | 81 | ssd_area->response.code); |
7ad6a249 PO |
82 | ret = -EIO; |
83 | goto out_free; | |
1da177e4 | 84 | } |
7ad6a249 PO |
85 | if (!ssd_area->sch_valid) { |
86 | ret = -ENODEV; | |
87 | goto out_free; | |
1da177e4 | 88 | } |
7ad6a249 PO |
89 | /* Copy data */ |
90 | ret = 0; | |
91 | memset(ssd, 0, sizeof(struct chsc_ssd_info)); | |
b279a4f5 CH |
92 | if ((ssd_area->st != SUBCHANNEL_TYPE_IO) && |
93 | (ssd_area->st != SUBCHANNEL_TYPE_MSG)) | |
7ad6a249 PO |
94 | goto out_free; |
95 | ssd->path_mask = ssd_area->path_mask; | |
96 | ssd->fla_valid_mask = ssd_area->fla_valid_mask; | |
97 | for (i = 0; i < 8; i++) { | |
98 | mask = 0x80 >> i; | |
99 | if (ssd_area->path_mask & mask) { | |
100 | chp_id_init(&ssd->chpid[i]); | |
101 | ssd->chpid[i].id = ssd_area->chpid[i]; | |
1da177e4 | 102 | } |
7ad6a249 PO |
103 | if (ssd_area->fla_valid_mask & mask) |
104 | ssd->fla[i] = ssd_area->fla[i]; | |
1da177e4 | 105 | } |
7ad6a249 PO |
106 | out_free: |
107 | free_page(page); | |
1da177e4 LT |
108 | return ret; |
109 | } | |
110 | ||
387b734f SB |
111 | static int check_for_io_on_path(struct subchannel *sch, int mask) |
112 | { | |
113 | int cc; | |
114 | ||
115 | cc = stsch(sch->schid, &sch->schib); | |
116 | if (cc) | |
117 | return 0; | |
118 | if (sch->schib.scsw.actl && sch->schib.pmcw.lpum == mask) | |
119 | return 1; | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static void terminate_internal_io(struct subchannel *sch) | |
124 | { | |
125 | if (cio_clear(sch)) { | |
126 | /* Recheck device in case clear failed. */ | |
127 | sch->lpm = 0; | |
83b3370c PO |
128 | if (device_trigger_verify(sch) != 0) |
129 | css_schedule_eval(sch->schid); | |
387b734f SB |
130 | return; |
131 | } | |
132 | /* Request retry of internal operation. */ | |
133 | device_set_intretry(sch); | |
134 | /* Call handler. */ | |
135 | if (sch->driver && sch->driver->termination) | |
602b20f2 | 136 | sch->driver->termination(sch); |
387b734f SB |
137 | } |
138 | ||
e82a1567 | 139 | static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data) |
1da177e4 LT |
140 | { |
141 | int j; | |
142 | int mask; | |
e82a1567 | 143 | struct chp_id *chpid = data; |
1da177e4 LT |
144 | struct schib schib; |
145 | ||
7e8ae7bf CH |
146 | for (j = 0; j < 8; j++) { |
147 | mask = 0x80 >> j; | |
148 | if ((sch->schib.pmcw.pim & mask) && | |
e6b6e10a | 149 | (sch->schib.pmcw.chpid[j] == chpid->id)) |
1da177e4 | 150 | break; |
7e8ae7bf | 151 | } |
1da177e4 LT |
152 | if (j >= 8) |
153 | return 0; | |
154 | ||
2ec22984 | 155 | spin_lock_irq(sch->lock); |
1da177e4 | 156 | |
a8237fc4 | 157 | stsch(sch->schid, &schib); |
b279a4f5 | 158 | if (!css_sch_is_valid(&schib)) |
1da177e4 LT |
159 | goto out_unreg; |
160 | memcpy(&sch->schib, &schib, sizeof(struct schib)); | |
161 | /* Check for single path devices. */ | |
162 | if (sch->schib.pmcw.pim == 0x80) | |
163 | goto out_unreg; | |
1da177e4 | 164 | |
387b734f SB |
165 | if (check_for_io_on_path(sch, mask)) { |
166 | if (device_is_online(sch)) | |
167 | device_kill_io(sch); | |
168 | else { | |
169 | terminate_internal_io(sch); | |
170 | /* Re-start path verification. */ | |
171 | if (sch->driver && sch->driver->verify) | |
602b20f2 | 172 | sch->driver->verify(sch); |
387b734f SB |
173 | } |
174 | } else { | |
175 | /* trigger path verification. */ | |
176 | if (sch->driver && sch->driver->verify) | |
602b20f2 | 177 | sch->driver->verify(sch); |
387b734f | 178 | else if (sch->lpm == mask) |
1da177e4 | 179 | goto out_unreg; |
1da177e4 LT |
180 | } |
181 | ||
2ec22984 | 182 | spin_unlock_irq(sch->lock); |
1da177e4 | 183 | return 0; |
387b734f | 184 | |
1da177e4 | 185 | out_unreg: |
1da177e4 | 186 | sch->lpm = 0; |
387b734f | 187 | spin_unlock_irq(sch->lock); |
83b3370c | 188 | css_schedule_eval(sch->schid); |
1da177e4 LT |
189 | return 0; |
190 | } | |
191 | ||
e6b6e10a | 192 | void chsc_chp_offline(struct chp_id chpid) |
1da177e4 LT |
193 | { |
194 | char dbf_txt[15]; | |
195 | ||
f86635fa | 196 | sprintf(dbf_txt, "chpr%x.%02x", chpid.cssid, chpid.id); |
1da177e4 LT |
197 | CIO_TRACE_EVENT(2, dbf_txt); |
198 | ||
e6b6e10a | 199 | if (chp_get_status(chpid) <= 0) |
1da177e4 | 200 | return; |
e82a1567 | 201 | for_each_subchannel_staged(s390_subchannel_remove_chpid, NULL, &chpid); |
1da177e4 LT |
202 | } |
203 | ||
e82a1567 | 204 | static int s390_process_res_acc_new_sch(struct subchannel_id schid, void *data) |
f97a56fb CH |
205 | { |
206 | struct schib schib; | |
f97a56fb CH |
207 | /* |
208 | * We don't know the device yet, but since a path | |
209 | * may be available now to the device we'll have | |
210 | * to do recognition again. | |
211 | * Since we don't have any idea about which chpid | |
212 | * that beast may be on we'll have to do a stsch | |
213 | * on all devices, grr... | |
214 | */ | |
fb6958a5 | 215 | if (stsch_err(schid, &schib)) |
f97a56fb | 216 | /* We're through */ |
83b3370c | 217 | return -ENXIO; |
f97a56fb CH |
218 | |
219 | /* Put it on the slow path. */ | |
83b3370c | 220 | css_schedule_eval(schid); |
f97a56fb CH |
221 | return 0; |
222 | } | |
223 | ||
7ad6a249 PO |
224 | struct res_acc_data { |
225 | struct chp_id chpid; | |
226 | u32 fla_mask; | |
227 | u16 fla; | |
228 | }; | |
229 | ||
230 | static int get_res_chpid_mask(struct chsc_ssd_info *ssd, | |
231 | struct res_acc_data *data) | |
232 | { | |
233 | int i; | |
234 | int mask; | |
235 | ||
236 | for (i = 0; i < 8; i++) { | |
237 | mask = 0x80 >> i; | |
238 | if (!(ssd->path_mask & mask)) | |
239 | continue; | |
240 | if (!chp_id_is_equal(&ssd->chpid[i], &data->chpid)) | |
241 | continue; | |
242 | if ((ssd->fla_valid_mask & mask) && | |
243 | ((ssd->fla[i] & data->fla_mask) != data->fla)) | |
244 | continue; | |
245 | return mask; | |
246 | } | |
247 | return 0; | |
248 | } | |
249 | ||
e82a1567 | 250 | static int __s390_process_res_acc(struct subchannel *sch, void *data) |
1da177e4 | 251 | { |
f97a56fb | 252 | int chp_mask, old_lpm; |
e82a1567 | 253 | struct res_acc_data *res_data = data; |
f97a56fb | 254 | |
2ec22984 | 255 | spin_lock_irq(sch->lock); |
7ad6a249 PO |
256 | chp_mask = get_res_chpid_mask(&sch->ssd_info, res_data); |
257 | if (chp_mask == 0) | |
258 | goto out; | |
259 | if (stsch(sch->schid, &sch->schib)) | |
260 | goto out; | |
f97a56fb CH |
261 | old_lpm = sch->lpm; |
262 | sch->lpm = ((sch->schib.pmcw.pim & | |
263 | sch->schib.pmcw.pam & | |
264 | sch->schib.pmcw.pom) | |
265 | | chp_mask) & sch->opm; | |
266 | if (!old_lpm && sch->lpm) | |
267 | device_trigger_reprobe(sch); | |
268 | else if (sch->driver && sch->driver->verify) | |
602b20f2 | 269 | sch->driver->verify(sch); |
7ad6a249 | 270 | out: |
2ec22984 | 271 | spin_unlock_irq(sch->lock); |
e82a1567 | 272 | |
dd9963f9 | 273 | return 0; |
f97a56fb CH |
274 | } |
275 | ||
83b3370c | 276 | static void s390_process_res_acc (struct res_acc_data *res_data) |
f97a56fb | 277 | { |
1da177e4 LT |
278 | char dbf_txt[15]; |
279 | ||
e6b6e10a PO |
280 | sprintf(dbf_txt, "accpr%x.%02x", res_data->chpid.cssid, |
281 | res_data->chpid.id); | |
1da177e4 | 282 | CIO_TRACE_EVENT( 2, dbf_txt); |
f97a56fb CH |
283 | if (res_data->fla != 0) { |
284 | sprintf(dbf_txt, "fla%x", res_data->fla); | |
1da177e4 LT |
285 | CIO_TRACE_EVENT( 2, dbf_txt); |
286 | } | |
287 | ||
288 | /* | |
289 | * I/O resources may have become accessible. | |
290 | * Scan through all subchannels that may be concerned and | |
291 | * do a validation on those. | |
292 | * The more information we have (info), the less scanning | |
293 | * will we have to do. | |
294 | */ | |
e82a1567 PO |
295 | for_each_subchannel_staged(__s390_process_res_acc, |
296 | s390_process_res_acc_new_sch, res_data); | |
1da177e4 LT |
297 | } |
298 | ||
299 | static int | |
300 | __get_chpid_from_lir(void *data) | |
301 | { | |
302 | struct lir { | |
303 | u8 iq; | |
304 | u8 ic; | |
305 | u16 sci; | |
306 | /* incident-node descriptor */ | |
307 | u32 indesc[28]; | |
308 | /* attached-node descriptor */ | |
309 | u32 andesc[28]; | |
310 | /* incident-specific information */ | |
311 | u32 isinfo[28]; | |
0f008aa3 | 312 | } __attribute__ ((packed)) *lir; |
1da177e4 | 313 | |
12975aef | 314 | lir = data; |
1da177e4 LT |
315 | if (!(lir->iq&0x80)) |
316 | /* NULL link incident record */ | |
317 | return -EINVAL; | |
318 | if (!(lir->indesc[0]&0xc0000000)) | |
319 | /* node descriptor not valid */ | |
320 | return -EINVAL; | |
321 | if (!(lir->indesc[0]&0x10000000)) | |
322 | /* don't handle device-type nodes - FIXME */ | |
323 | return -EINVAL; | |
324 | /* Byte 3 contains the chpid. Could also be CTCA, but we don't care */ | |
325 | ||
326 | return (u16) (lir->indesc[0]&0x000000ff); | |
327 | } | |
328 | ||
184357a5 PO |
329 | struct chsc_sei_area { |
330 | struct chsc_header request; | |
331 | u32 reserved1; | |
332 | u32 reserved2; | |
333 | u32 reserved3; | |
334 | struct chsc_header response; | |
335 | u32 reserved4; | |
336 | u8 flags; | |
337 | u8 vf; /* validity flags */ | |
338 | u8 rs; /* reporting source */ | |
339 | u8 cc; /* content code */ | |
340 | u16 fla; /* full link address */ | |
341 | u16 rsid; /* reporting source id */ | |
342 | u32 reserved5; | |
343 | u32 reserved6; | |
344 | u8 ccdf[4096 - 16 - 24]; /* content-code dependent field */ | |
345 | /* ccdf has to be big enough for a link-incident record */ | |
346 | } __attribute__ ((packed)); | |
347 | ||
83b3370c | 348 | static void chsc_process_sei_link_incident(struct chsc_sei_area *sei_area) |
184357a5 | 349 | { |
f86635fa PO |
350 | struct chp_id chpid; |
351 | int id; | |
184357a5 PO |
352 | |
353 | CIO_CRW_EVENT(4, "chsc: link incident (rs=%02x, rs_id=%04x)\n", | |
354 | sei_area->rs, sei_area->rsid); | |
355 | if (sei_area->rs != 4) | |
83b3370c | 356 | return; |
f86635fa PO |
357 | id = __get_chpid_from_lir(sei_area->ccdf); |
358 | if (id < 0) | |
184357a5 | 359 | CIO_CRW_EVENT(4, "chsc: link incident - invalid LIR\n"); |
f86635fa PO |
360 | else { |
361 | chp_id_init(&chpid); | |
362 | chpid.id = id; | |
e6b6e10a | 363 | chsc_chp_offline(chpid); |
f86635fa | 364 | } |
184357a5 PO |
365 | } |
366 | ||
83b3370c | 367 | static void chsc_process_sei_res_acc(struct chsc_sei_area *sei_area) |
1da177e4 | 368 | { |
f97a56fb | 369 | struct res_acc_data res_data; |
f86635fa | 370 | struct chp_id chpid; |
184357a5 | 371 | int status; |
184357a5 PO |
372 | |
373 | CIO_CRW_EVENT(4, "chsc: resource accessibility event (rs=%02x, " | |
374 | "rs_id=%04x)\n", sei_area->rs, sei_area->rsid); | |
375 | if (sei_area->rs != 4) | |
83b3370c | 376 | return; |
f86635fa PO |
377 | chp_id_init(&chpid); |
378 | chpid.id = sei_area->rsid; | |
184357a5 | 379 | /* allocate a new channel path structure, if needed */ |
e6b6e10a | 380 | status = chp_get_status(chpid); |
184357a5 | 381 | if (status < 0) |
e6b6e10a | 382 | chp_new(chpid); |
184357a5 | 383 | else if (!status) |
83b3370c | 384 | return; |
184357a5 | 385 | memset(&res_data, 0, sizeof(struct res_acc_data)); |
e6b6e10a | 386 | res_data.chpid = chpid; |
184357a5 PO |
387 | if ((sei_area->vf & 0xc0) != 0) { |
388 | res_data.fla = sei_area->fla; | |
389 | if ((sei_area->vf & 0xc0) == 0xc0) | |
390 | /* full link address */ | |
391 | res_data.fla_mask = 0xffff; | |
392 | else | |
393 | /* link address */ | |
394 | res_data.fla_mask = 0xff00; | |
395 | } | |
83b3370c | 396 | s390_process_res_acc(&res_data); |
184357a5 PO |
397 | } |
398 | ||
e5854a58 PO |
399 | struct chp_config_data { |
400 | u8 map[32]; | |
401 | u8 op; | |
402 | u8 pc; | |
403 | }; | |
404 | ||
83b3370c | 405 | static void chsc_process_sei_chp_config(struct chsc_sei_area *sei_area) |
e5854a58 PO |
406 | { |
407 | struct chp_config_data *data; | |
408 | struct chp_id chpid; | |
409 | int num; | |
410 | ||
411 | CIO_CRW_EVENT(4, "chsc: channel-path-configuration notification\n"); | |
412 | if (sei_area->rs != 0) | |
83b3370c | 413 | return; |
e5854a58 PO |
414 | data = (struct chp_config_data *) &(sei_area->ccdf); |
415 | chp_id_init(&chpid); | |
416 | for (num = 0; num <= __MAX_CHPID; num++) { | |
417 | if (!chp_test_bit(data->map, num)) | |
418 | continue; | |
419 | chpid.id = num; | |
420 | printk(KERN_WARNING "cio: processing configure event %d for " | |
421 | "chpid %x.%02x\n", data->op, chpid.cssid, chpid.id); | |
422 | switch (data->op) { | |
423 | case 0: | |
424 | chp_cfg_schedule(chpid, 1); | |
425 | break; | |
426 | case 1: | |
427 | chp_cfg_schedule(chpid, 0); | |
428 | break; | |
429 | case 2: | |
430 | chp_cfg_cancel_deconfigure(chpid); | |
431 | break; | |
432 | } | |
433 | } | |
e5854a58 PO |
434 | } |
435 | ||
83b3370c | 436 | static void chsc_process_sei(struct chsc_sei_area *sei_area) |
184357a5 | 437 | { |
184357a5 | 438 | /* Check if we might have lost some information. */ |
83b3370c | 439 | if (sei_area->flags & 0x40) { |
184357a5 | 440 | CIO_CRW_EVENT(2, "chsc: event overflow\n"); |
83b3370c PO |
441 | css_schedule_eval_all(); |
442 | } | |
184357a5 | 443 | /* which kind of information was stored? */ |
184357a5 PO |
444 | switch (sei_area->cc) { |
445 | case 1: /* link incident*/ | |
83b3370c | 446 | chsc_process_sei_link_incident(sei_area); |
184357a5 PO |
447 | break; |
448 | case 2: /* i/o resource accessibiliy */ | |
83b3370c | 449 | chsc_process_sei_res_acc(sei_area); |
184357a5 | 450 | break; |
e5854a58 | 451 | case 8: /* channel-path-configuration notification */ |
83b3370c | 452 | chsc_process_sei_chp_config(sei_area); |
e5854a58 | 453 | break; |
184357a5 PO |
454 | default: /* other stuff */ |
455 | CIO_CRW_EVENT(4, "chsc: unhandled sei content code %d\n", | |
456 | sei_area->cc); | |
457 | break; | |
458 | } | |
184357a5 PO |
459 | } |
460 | ||
83b3370c | 461 | void chsc_process_crw(void) |
184357a5 PO |
462 | { |
463 | struct chsc_sei_area *sei_area; | |
1da177e4 LT |
464 | |
465 | if (!sei_page) | |
83b3370c | 466 | return; |
184357a5 PO |
467 | /* Access to sei_page is serialized through machine check handler |
468 | * thread, so no need for locking. */ | |
1da177e4 LT |
469 | sei_area = sei_page; |
470 | ||
471 | CIO_TRACE_EVENT( 2, "prcss"); | |
1da177e4 | 472 | do { |
1da177e4 | 473 | memset(sei_area, 0, sizeof(*sei_area)); |
495a5b45 CH |
474 | sei_area->request.length = 0x0010; |
475 | sei_area->request.code = 0x000e; | |
184357a5 PO |
476 | if (chsc(sei_area)) |
477 | break; | |
1da177e4 | 478 | |
184357a5 PO |
479 | if (sei_area->response.code == 0x0001) { |
480 | CIO_CRW_EVENT(4, "chsc: sei successful\n"); | |
83b3370c | 481 | chsc_process_sei(sei_area); |
184357a5 PO |
482 | } else { |
483 | CIO_CRW_EVENT(2, "chsc: sei failed (rc=%04x)\n", | |
1da177e4 | 484 | sei_area->response.code); |
1da177e4 LT |
485 | break; |
486 | } | |
487 | } while (sei_area->flags & 0x80); | |
1da177e4 LT |
488 | } |
489 | ||
e82a1567 | 490 | static int __chp_add_new_sch(struct subchannel_id schid, void *data) |
f97a56fb CH |
491 | { |
492 | struct schib schib; | |
f97a56fb | 493 | |
758976f9 | 494 | if (stsch_err(schid, &schib)) |
f97a56fb | 495 | /* We're through */ |
83b3370c | 496 | return -ENXIO; |
f97a56fb CH |
497 | |
498 | /* Put it on the slow path. */ | |
83b3370c | 499 | css_schedule_eval(schid); |
f97a56fb CH |
500 | return 0; |
501 | } | |
502 | ||
503 | ||
e82a1567 | 504 | static int __chp_add(struct subchannel *sch, void *data) |
1da177e4 | 505 | { |
7e8ae7bf | 506 | int i, mask; |
e82a1567 PO |
507 | struct chp_id *chpid = data; |
508 | ||
2ec22984 | 509 | spin_lock_irq(sch->lock); |
7e8ae7bf CH |
510 | for (i=0; i<8; i++) { |
511 | mask = 0x80 >> i; | |
512 | if ((sch->schib.pmcw.pim & mask) && | |
e82a1567 | 513 | (sch->schib.pmcw.chpid[i] == chpid->id)) |
f97a56fb | 514 | break; |
7e8ae7bf | 515 | } |
f97a56fb | 516 | if (i==8) { |
2ec22984 | 517 | spin_unlock_irq(sch->lock); |
f97a56fb CH |
518 | return 0; |
519 | } | |
e82a1567 PO |
520 | if (stsch(sch->schid, &sch->schib)) { |
521 | spin_unlock_irq(sch->lock); | |
522 | css_schedule_eval(sch->schid); | |
523 | return 0; | |
524 | } | |
f97a56fb CH |
525 | sch->lpm = ((sch->schib.pmcw.pim & |
526 | sch->schib.pmcw.pam & | |
527 | sch->schib.pmcw.pom) | |
7e8ae7bf | 528 | | mask) & sch->opm; |
f97a56fb CH |
529 | |
530 | if (sch->driver && sch->driver->verify) | |
602b20f2 | 531 | sch->driver->verify(sch); |
f97a56fb | 532 | |
2ec22984 | 533 | spin_unlock_irq(sch->lock); |
e82a1567 | 534 | |
f97a56fb CH |
535 | return 0; |
536 | } | |
537 | ||
83b3370c | 538 | void chsc_chp_online(struct chp_id chpid) |
f97a56fb | 539 | { |
1da177e4 LT |
540 | char dbf_txt[15]; |
541 | ||
f86635fa | 542 | sprintf(dbf_txt, "cadd%x.%02x", chpid.cssid, chpid.id); |
1da177e4 LT |
543 | CIO_TRACE_EVENT(2, dbf_txt); |
544 | ||
83b3370c | 545 | if (chp_get_status(chpid) != 0) |
e82a1567 PO |
546 | for_each_subchannel_staged(__chp_add, __chp_add_new_sch, |
547 | &chpid); | |
1da177e4 LT |
548 | } |
549 | ||
f86635fa PO |
550 | static void __s390_subchannel_vary_chpid(struct subchannel *sch, |
551 | struct chp_id chpid, int on) | |
1da177e4 LT |
552 | { |
553 | int chp, old_lpm; | |
7ad6a249 | 554 | int mask; |
1da177e4 LT |
555 | unsigned long flags; |
556 | ||
2ec22984 | 557 | spin_lock_irqsave(sch->lock, flags); |
1da177e4 LT |
558 | old_lpm = sch->lpm; |
559 | for (chp = 0; chp < 8; chp++) { | |
7ad6a249 PO |
560 | mask = 0x80 >> chp; |
561 | if (!(sch->ssd_info.path_mask & mask)) | |
562 | continue; | |
563 | if (!chp_id_is_equal(&sch->ssd_info.chpid[chp], &chpid)) | |
1da177e4 LT |
564 | continue; |
565 | ||
566 | if (on) { | |
7ad6a249 PO |
567 | sch->opm |= mask; |
568 | sch->lpm |= mask; | |
1da177e4 LT |
569 | if (!old_lpm) |
570 | device_trigger_reprobe(sch); | |
571 | else if (sch->driver && sch->driver->verify) | |
602b20f2 | 572 | sch->driver->verify(sch); |
24cb5b48 CH |
573 | break; |
574 | } | |
7ad6a249 PO |
575 | sch->opm &= ~mask; |
576 | sch->lpm &= ~mask; | |
577 | if (check_for_io_on_path(sch, mask)) { | |
d23861ff CH |
578 | if (device_is_online(sch)) |
579 | /* Path verification is done after killing. */ | |
580 | device_kill_io(sch); | |
387b734f | 581 | else { |
d23861ff CH |
582 | /* Kill and retry internal I/O. */ |
583 | terminate_internal_io(sch); | |
387b734f SB |
584 | /* Re-start path verification. */ |
585 | if (sch->driver && sch->driver->verify) | |
602b20f2 | 586 | sch->driver->verify(sch); |
387b734f | 587 | } |
d23861ff | 588 | } else if (!sch->lpm) { |
83b3370c PO |
589 | if (device_trigger_verify(sch) != 0) |
590 | css_schedule_eval(sch->schid); | |
24cb5b48 | 591 | } else if (sch->driver && sch->driver->verify) |
602b20f2 | 592 | sch->driver->verify(sch); |
1da177e4 LT |
593 | break; |
594 | } | |
2ec22984 | 595 | spin_unlock_irqrestore(sch->lock, flags); |
1da177e4 LT |
596 | } |
597 | ||
e82a1567 | 598 | static int s390_subchannel_vary_chpid_off(struct subchannel *sch, void *data) |
1da177e4 | 599 | { |
e82a1567 | 600 | struct chp_id *chpid = data; |
1da177e4 LT |
601 | |
602 | __s390_subchannel_vary_chpid(sch, *chpid, 0); | |
603 | return 0; | |
604 | } | |
605 | ||
e82a1567 | 606 | static int s390_subchannel_vary_chpid_on(struct subchannel *sch, void *data) |
1da177e4 | 607 | { |
e82a1567 | 608 | struct chp_id *chpid = data; |
1da177e4 LT |
609 | |
610 | __s390_subchannel_vary_chpid(sch, *chpid, 1); | |
611 | return 0; | |
612 | } | |
613 | ||
f97a56fb CH |
614 | static int |
615 | __s390_vary_chpid_on(struct subchannel_id schid, void *data) | |
616 | { | |
617 | struct schib schib; | |
f97a56fb | 618 | |
fb6958a5 | 619 | if (stsch_err(schid, &schib)) |
f97a56fb CH |
620 | /* We're through */ |
621 | return -ENXIO; | |
622 | /* Put it on the slow path. */ | |
83b3370c | 623 | css_schedule_eval(schid); |
f97a56fb CH |
624 | return 0; |
625 | } | |
626 | ||
e6b6e10a PO |
627 | /** |
628 | * chsc_chp_vary - propagate channel-path vary operation to subchannels | |
629 | * @chpid: channl-path ID | |
630 | * @on: non-zero for vary online, zero for vary offline | |
1da177e4 | 631 | */ |
e6b6e10a | 632 | int chsc_chp_vary(struct chp_id chpid, int on) |
1da177e4 | 633 | { |
1da177e4 LT |
634 | /* |
635 | * Redo PathVerification on the devices the chpid connects to | |
636 | */ | |
637 | ||
f97a56fb | 638 | if (on) |
e82a1567 PO |
639 | for_each_subchannel_staged(s390_subchannel_vary_chpid_on, |
640 | __s390_vary_chpid_on, &chpid); | |
641 | else | |
642 | for_each_subchannel_staged(s390_subchannel_vary_chpid_off, | |
643 | NULL, &chpid); | |
644 | ||
1da177e4 LT |
645 | return 0; |
646 | } | |
647 | ||
495a5b45 CH |
648 | static void |
649 | chsc_remove_cmg_attr(struct channel_subsystem *css) | |
650 | { | |
651 | int i; | |
652 | ||
653 | for (i = 0; i <= __MAX_CHPID; i++) { | |
654 | if (!css->chps[i]) | |
655 | continue; | |
e6b6e10a | 656 | chp_remove_cmg_attr(css->chps[i]); |
495a5b45 CH |
657 | } |
658 | } | |
659 | ||
660 | static int | |
661 | chsc_add_cmg_attr(struct channel_subsystem *css) | |
662 | { | |
663 | int i, ret; | |
664 | ||
665 | ret = 0; | |
666 | for (i = 0; i <= __MAX_CHPID; i++) { | |
667 | if (!css->chps[i]) | |
668 | continue; | |
e6b6e10a | 669 | ret = chp_add_cmg_attr(css->chps[i]); |
495a5b45 CH |
670 | if (ret) |
671 | goto cleanup; | |
672 | } | |
673 | return ret; | |
674 | cleanup: | |
675 | for (--i; i >= 0; i--) { | |
676 | if (!css->chps[i]) | |
677 | continue; | |
e6b6e10a | 678 | chp_remove_cmg_attr(css->chps[i]); |
495a5b45 CH |
679 | } |
680 | return ret; | |
681 | } | |
682 | ||
495a5b45 CH |
683 | static int |
684 | __chsc_do_secm(struct channel_subsystem *css, int enable, void *page) | |
685 | { | |
686 | struct { | |
687 | struct chsc_header request; | |
688 | u32 operation_code : 2; | |
689 | u32 : 30; | |
690 | u32 key : 4; | |
691 | u32 : 28; | |
692 | u32 zeroes1; | |
693 | u32 cub_addr1; | |
694 | u32 zeroes2; | |
695 | u32 cub_addr2; | |
696 | u32 reserved[13]; | |
697 | struct chsc_header response; | |
698 | u32 status : 8; | |
699 | u32 : 4; | |
700 | u32 fmt : 4; | |
701 | u32 : 16; | |
0f008aa3 | 702 | } __attribute__ ((packed)) *secm_area; |
495a5b45 CH |
703 | int ret, ccode; |
704 | ||
705 | secm_area = page; | |
706 | secm_area->request.length = 0x0050; | |
707 | secm_area->request.code = 0x0016; | |
708 | ||
709 | secm_area->key = PAGE_DEFAULT_KEY; | |
710 | secm_area->cub_addr1 = (u64)(unsigned long)css->cub_addr1; | |
711 | secm_area->cub_addr2 = (u64)(unsigned long)css->cub_addr2; | |
712 | ||
713 | secm_area->operation_code = enable ? 0 : 1; | |
714 | ||
715 | ccode = chsc(secm_area); | |
716 | if (ccode > 0) | |
717 | return (ccode == 3) ? -ENODEV : -EBUSY; | |
718 | ||
719 | switch (secm_area->response.code) { | |
720 | case 0x0001: /* Success. */ | |
721 | ret = 0; | |
722 | break; | |
723 | case 0x0003: /* Invalid block. */ | |
724 | case 0x0007: /* Invalid format. */ | |
725 | case 0x0008: /* Other invalid block. */ | |
726 | CIO_CRW_EVENT(2, "Error in chsc request block!\n"); | |
727 | ret = -EINVAL; | |
728 | break; | |
729 | case 0x0004: /* Command not provided in model. */ | |
730 | CIO_CRW_EVENT(2, "Model does not provide secm\n"); | |
731 | ret = -EOPNOTSUPP; | |
732 | break; | |
733 | case 0x0102: /* cub adresses incorrect */ | |
734 | CIO_CRW_EVENT(2, "Invalid addresses in chsc request block\n"); | |
735 | ret = -EINVAL; | |
736 | break; | |
737 | case 0x0103: /* key error */ | |
738 | CIO_CRW_EVENT(2, "Access key error in secm\n"); | |
739 | ret = -EINVAL; | |
740 | break; | |
741 | case 0x0105: /* error while starting */ | |
742 | CIO_CRW_EVENT(2, "Error while starting channel measurement\n"); | |
743 | ret = -EIO; | |
744 | break; | |
745 | default: | |
746 | CIO_CRW_EVENT(2, "Unknown CHSC response %d\n", | |
747 | secm_area->response.code); | |
748 | ret = -EIO; | |
749 | } | |
750 | return ret; | |
751 | } | |
752 | ||
753 | int | |
754 | chsc_secm(struct channel_subsystem *css, int enable) | |
755 | { | |
756 | void *secm_area; | |
757 | int ret; | |
758 | ||
759 | secm_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
760 | if (!secm_area) | |
761 | return -ENOMEM; | |
762 | ||
763 | mutex_lock(&css->mutex); | |
764 | if (enable && !css->cm_enabled) { | |
765 | css->cub_addr1 = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
766 | css->cub_addr2 = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
767 | if (!css->cub_addr1 || !css->cub_addr2) { | |
768 | free_page((unsigned long)css->cub_addr1); | |
769 | free_page((unsigned long)css->cub_addr2); | |
770 | free_page((unsigned long)secm_area); | |
771 | mutex_unlock(&css->mutex); | |
772 | return -ENOMEM; | |
773 | } | |
774 | } | |
775 | ret = __chsc_do_secm(css, enable, secm_area); | |
776 | if (!ret) { | |
777 | css->cm_enabled = enable; | |
778 | if (css->cm_enabled) { | |
779 | ret = chsc_add_cmg_attr(css); | |
780 | if (ret) { | |
781 | memset(secm_area, 0, PAGE_SIZE); | |
782 | __chsc_do_secm(css, 0, secm_area); | |
783 | css->cm_enabled = 0; | |
784 | } | |
785 | } else | |
786 | chsc_remove_cmg_attr(css); | |
787 | } | |
8c4941c5 | 788 | if (!css->cm_enabled) { |
495a5b45 CH |
789 | free_page((unsigned long)css->cub_addr1); |
790 | free_page((unsigned long)css->cub_addr2); | |
791 | } | |
792 | mutex_unlock(&css->mutex); | |
793 | free_page((unsigned long)secm_area); | |
794 | return ret; | |
795 | } | |
796 | ||
e6b6e10a PO |
797 | int chsc_determine_channel_path_description(struct chp_id chpid, |
798 | struct channel_path_desc *desc) | |
1da177e4 LT |
799 | { |
800 | int ccode, ret; | |
801 | ||
802 | struct { | |
803 | struct chsc_header request; | |
804 | u32 : 24; | |
805 | u32 first_chpid : 8; | |
806 | u32 : 24; | |
807 | u32 last_chpid : 8; | |
808 | u32 zeroes1; | |
809 | struct chsc_header response; | |
810 | u32 zeroes2; | |
811 | struct channel_path_desc desc; | |
0f008aa3 | 812 | } __attribute__ ((packed)) *scpd_area; |
1da177e4 LT |
813 | |
814 | scpd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
815 | if (!scpd_area) | |
816 | return -ENOMEM; | |
817 | ||
495a5b45 CH |
818 | scpd_area->request.length = 0x0010; |
819 | scpd_area->request.code = 0x0002; | |
1da177e4 | 820 | |
f86635fa PO |
821 | scpd_area->first_chpid = chpid.id; |
822 | scpd_area->last_chpid = chpid.id; | |
1da177e4 LT |
823 | |
824 | ccode = chsc(scpd_area); | |
825 | if (ccode > 0) { | |
826 | ret = (ccode == 3) ? -ENODEV : -EBUSY; | |
827 | goto out; | |
828 | } | |
829 | ||
830 | switch (scpd_area->response.code) { | |
831 | case 0x0001: /* Success. */ | |
832 | memcpy(desc, &scpd_area->desc, | |
833 | sizeof(struct channel_path_desc)); | |
834 | ret = 0; | |
835 | break; | |
836 | case 0x0003: /* Invalid block. */ | |
837 | case 0x0007: /* Invalid format. */ | |
838 | case 0x0008: /* Other invalid block. */ | |
839 | CIO_CRW_EVENT(2, "Error in chsc request block!\n"); | |
840 | ret = -EINVAL; | |
841 | break; | |
842 | case 0x0004: /* Command not provided in model. */ | |
843 | CIO_CRW_EVENT(2, "Model does not provide scpd\n"); | |
844 | ret = -EOPNOTSUPP; | |
845 | break; | |
846 | default: | |
847 | CIO_CRW_EVENT(2, "Unknown CHSC response %d\n", | |
848 | scpd_area->response.code); | |
849 | ret = -EIO; | |
850 | } | |
851 | out: | |
852 | free_page((unsigned long)scpd_area); | |
853 | return ret; | |
854 | } | |
855 | ||
495a5b45 CH |
856 | static void |
857 | chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv, | |
858 | struct cmg_chars *chars) | |
859 | { | |
860 | switch (chp->cmg) { | |
861 | case 2: | |
862 | case 3: | |
863 | chp->cmg_chars = kmalloc(sizeof(struct cmg_chars), | |
864 | GFP_KERNEL); | |
865 | if (chp->cmg_chars) { | |
866 | int i, mask; | |
867 | struct cmg_chars *cmg_chars; | |
868 | ||
869 | cmg_chars = chp->cmg_chars; | |
870 | for (i = 0; i < NR_MEASUREMENT_CHARS; i++) { | |
871 | mask = 0x80 >> (i + 3); | |
872 | if (cmcv & mask) | |
873 | cmg_chars->values[i] = chars->values[i]; | |
874 | else | |
875 | cmg_chars->values[i] = 0; | |
876 | } | |
877 | } | |
878 | break; | |
879 | default: | |
880 | /* No cmg-dependent data. */ | |
881 | break; | |
882 | } | |
883 | } | |
884 | ||
e6b6e10a | 885 | int chsc_get_channel_measurement_chars(struct channel_path *chp) |
495a5b45 CH |
886 | { |
887 | int ccode, ret; | |
888 | ||
889 | struct { | |
890 | struct chsc_header request; | |
891 | u32 : 24; | |
892 | u32 first_chpid : 8; | |
893 | u32 : 24; | |
894 | u32 last_chpid : 8; | |
895 | u32 zeroes1; | |
896 | struct chsc_header response; | |
897 | u32 zeroes2; | |
898 | u32 not_valid : 1; | |
899 | u32 shared : 1; | |
900 | u32 : 22; | |
901 | u32 chpid : 8; | |
902 | u32 cmcv : 5; | |
903 | u32 : 11; | |
904 | u32 cmgq : 8; | |
905 | u32 cmg : 8; | |
906 | u32 zeroes3; | |
907 | u32 data[NR_MEASUREMENT_CHARS]; | |
0f008aa3 | 908 | } __attribute__ ((packed)) *scmc_area; |
495a5b45 CH |
909 | |
910 | scmc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
911 | if (!scmc_area) | |
912 | return -ENOMEM; | |
913 | ||
914 | scmc_area->request.length = 0x0010; | |
915 | scmc_area->request.code = 0x0022; | |
916 | ||
f86635fa PO |
917 | scmc_area->first_chpid = chp->chpid.id; |
918 | scmc_area->last_chpid = chp->chpid.id; | |
495a5b45 CH |
919 | |
920 | ccode = chsc(scmc_area); | |
921 | if (ccode > 0) { | |
922 | ret = (ccode == 3) ? -ENODEV : -EBUSY; | |
923 | goto out; | |
924 | } | |
925 | ||
926 | switch (scmc_area->response.code) { | |
927 | case 0x0001: /* Success. */ | |
928 | if (!scmc_area->not_valid) { | |
929 | chp->cmg = scmc_area->cmg; | |
930 | chp->shared = scmc_area->shared; | |
931 | chsc_initialize_cmg_chars(chp, scmc_area->cmcv, | |
932 | (struct cmg_chars *) | |
933 | &scmc_area->data); | |
934 | } else { | |
935 | chp->cmg = -1; | |
936 | chp->shared = -1; | |
937 | } | |
938 | ret = 0; | |
939 | break; | |
940 | case 0x0003: /* Invalid block. */ | |
941 | case 0x0007: /* Invalid format. */ | |
942 | case 0x0008: /* Invalid bit combination. */ | |
943 | CIO_CRW_EVENT(2, "Error in chsc request block!\n"); | |
944 | ret = -EINVAL; | |
945 | break; | |
946 | case 0x0004: /* Command not provided. */ | |
947 | CIO_CRW_EVENT(2, "Model does not provide scmc\n"); | |
948 | ret = -EOPNOTSUPP; | |
949 | break; | |
950 | default: | |
951 | CIO_CRW_EVENT(2, "Unknown CHSC response %d\n", | |
952 | scmc_area->response.code); | |
953 | ret = -EIO; | |
954 | } | |
955 | out: | |
956 | free_page((unsigned long)scmc_area); | |
957 | return ret; | |
958 | } | |
959 | ||
4434a38c | 960 | int __init chsc_alloc_sei_area(void) |
1da177e4 LT |
961 | { |
962 | sei_page = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
963 | if (!sei_page) | |
e556bbbd CH |
964 | CIO_MSG_EVENT(0, "Can't allocate page for processing of " |
965 | "chsc machine checks!\n"); | |
1da177e4 LT |
966 | return (sei_page ? 0 : -ENOMEM); |
967 | } | |
968 | ||
4434a38c CH |
969 | void __init chsc_free_sei_area(void) |
970 | { | |
971 | kfree(sei_page); | |
972 | } | |
973 | ||
fb6958a5 CH |
974 | int __init |
975 | chsc_enable_facility(int operation_code) | |
976 | { | |
977 | int ret; | |
978 | struct { | |
979 | struct chsc_header request; | |
980 | u8 reserved1:4; | |
981 | u8 format:4; | |
982 | u8 reserved2; | |
983 | u16 operation_code; | |
984 | u32 reserved3; | |
985 | u32 reserved4; | |
986 | u32 operation_data_area[252]; | |
987 | struct chsc_header response; | |
988 | u32 reserved5:4; | |
989 | u32 format2:4; | |
990 | u32 reserved6:24; | |
0f008aa3 | 991 | } __attribute__ ((packed)) *sda_area; |
fb6958a5 CH |
992 | |
993 | sda_area = (void *)get_zeroed_page(GFP_KERNEL|GFP_DMA); | |
994 | if (!sda_area) | |
995 | return -ENOMEM; | |
495a5b45 CH |
996 | sda_area->request.length = 0x0400; |
997 | sda_area->request.code = 0x0031; | |
fb6958a5 CH |
998 | sda_area->operation_code = operation_code; |
999 | ||
1000 | ret = chsc(sda_area); | |
1001 | if (ret > 0) { | |
1002 | ret = (ret == 3) ? -ENODEV : -EBUSY; | |
1003 | goto out; | |
1004 | } | |
1005 | switch (sda_area->response.code) { | |
15730ddb CH |
1006 | case 0x0001: /* everything ok */ |
1007 | ret = 0; | |
1008 | break; | |
fb6958a5 CH |
1009 | case 0x0003: /* invalid request block */ |
1010 | case 0x0007: | |
1011 | ret = -EINVAL; | |
1012 | break; | |
1013 | case 0x0004: /* command not provided */ | |
1014 | case 0x0101: /* facility not provided */ | |
1015 | ret = -EOPNOTSUPP; | |
1016 | break; | |
15730ddb CH |
1017 | default: /* something went wrong */ |
1018 | ret = -EIO; | |
fb6958a5 CH |
1019 | } |
1020 | out: | |
1021 | free_page((unsigned long)sda_area); | |
1022 | return ret; | |
1023 | } | |
1024 | ||
1da177e4 LT |
1025 | struct css_general_char css_general_characteristics; |
1026 | struct css_chsc_char css_chsc_characteristics; | |
1027 | ||
1028 | int __init | |
1029 | chsc_determine_css_characteristics(void) | |
1030 | { | |
1031 | int result; | |
1032 | struct { | |
1033 | struct chsc_header request; | |
1034 | u32 reserved1; | |
1035 | u32 reserved2; | |
1036 | u32 reserved3; | |
1037 | struct chsc_header response; | |
1038 | u32 reserved4; | |
1039 | u32 general_char[510]; | |
1040 | u32 chsc_char[518]; | |
0f008aa3 | 1041 | } __attribute__ ((packed)) *scsc_area; |
1da177e4 LT |
1042 | |
1043 | scsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
1044 | if (!scsc_area) { | |
ceb3dfba | 1045 | CIO_MSG_EVENT(0, "Was not able to determine available " |
e556bbbd | 1046 | "CHSCs due to no memory.\n"); |
1da177e4 LT |
1047 | return -ENOMEM; |
1048 | } | |
1049 | ||
495a5b45 CH |
1050 | scsc_area->request.length = 0x0010; |
1051 | scsc_area->request.code = 0x0010; | |
1da177e4 LT |
1052 | |
1053 | result = chsc(scsc_area); | |
1054 | if (result) { | |
e556bbbd CH |
1055 | CIO_MSG_EVENT(0, "Was not able to determine available CHSCs, " |
1056 | "cc=%i.\n", result); | |
1da177e4 LT |
1057 | result = -EIO; |
1058 | goto exit; | |
1059 | } | |
1060 | ||
1061 | if (scsc_area->response.code != 1) { | |
e556bbbd CH |
1062 | CIO_MSG_EVENT(0, "Was not able to determine " |
1063 | "available CHSCs.\n"); | |
1da177e4 LT |
1064 | result = -EIO; |
1065 | goto exit; | |
1066 | } | |
1067 | memcpy(&css_general_characteristics, scsc_area->general_char, | |
1068 | sizeof(css_general_characteristics)); | |
1069 | memcpy(&css_chsc_characteristics, scsc_area->chsc_char, | |
1070 | sizeof(css_chsc_characteristics)); | |
1071 | exit: | |
1072 | free_page ((unsigned long) scsc_area); | |
1073 | return result; | |
1074 | } | |
1075 | ||
1076 | EXPORT_SYMBOL_GPL(css_general_characteristics); | |
1077 | EXPORT_SYMBOL_GPL(css_chsc_characteristics); |