Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/s390/cio/cio.c | |
3 | * S/390 common I/O routines -- low level i/o calls | |
1da177e4 | 4 | * |
aa77015c | 5 | * Copyright (C) IBM Corp. 1999,2006 |
1da177e4 | 6 | * Author(s): Ingo Adlung (adlung@de.ibm.com) |
4ce3b30c | 7 | * Cornelia Huck (cornelia.huck@de.ibm.com) |
1da177e4 LT |
8 | * Arnd Bergmann (arndb@de.ibm.com) |
9 | * Martin Schwidefsky (schwidefsky@de.ibm.com) | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
1da177e4 LT |
13 | #include <linux/init.h> |
14 | #include <linux/slab.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/kernel_stat.h> | |
17 | #include <linux/interrupt.h> | |
1da177e4 LT |
18 | #include <asm/cio.h> |
19 | #include <asm/delay.h> | |
20 | #include <asm/irq.h> | |
5a489b98 | 21 | #include <asm/irq_regs.h> |
e87bfe51 | 22 | #include <asm/setup.h> |
15e9b586 | 23 | #include <asm/reset.h> |
46b05d26 | 24 | #include <asm/ipl.h> |
e5854a58 | 25 | #include <asm/chpid.h> |
4e8e56c6 | 26 | #include <asm/airq.h> |
43ca5c3a | 27 | #include <asm/cpu.h> |
1da177e4 LT |
28 | #include "cio.h" |
29 | #include "css.h" | |
30 | #include "chsc.h" | |
31 | #include "ioasm.h" | |
cd6b4f27 | 32 | #include "io_sch.h" |
1da177e4 LT |
33 | #include "blacklist.h" |
34 | #include "cio_debug.h" | |
e6b6e10a | 35 | #include "chp.h" |
15e9b586 | 36 | #include "../s390mach.h" |
1da177e4 LT |
37 | |
38 | debug_info_t *cio_debug_msg_id; | |
39 | debug_info_t *cio_debug_trace_id; | |
40 | debug_info_t *cio_debug_crw_id; | |
41 | ||
42 | int cio_show_msg; | |
43 | ||
44 | static int __init | |
45 | cio_setup (char *parm) | |
46 | { | |
47 | if (!strcmp (parm, "yes")) | |
48 | cio_show_msg = 1; | |
49 | else if (!strcmp (parm, "no")) | |
50 | cio_show_msg = 0; | |
51 | else | |
e556bbbd CH |
52 | printk(KERN_ERR "cio: cio_setup: " |
53 | "invalid cio_msg parameter '%s'", parm); | |
1da177e4 LT |
54 | return 1; |
55 | } | |
56 | ||
57 | __setup ("cio_msg=", cio_setup); | |
58 | ||
59 | /* | |
60 | * Function: cio_debug_init | |
bc698bcf CH |
61 | * Initializes three debug logs for common I/O: |
62 | * - cio_msg logs generic cio messages | |
1da177e4 | 63 | * - cio_trace logs the calling of different functions |
bc698bcf | 64 | * - cio_crw logs machine check related cio messages |
1da177e4 | 65 | */ |
bc698bcf | 66 | static int __init cio_debug_init(void) |
1da177e4 | 67 | { |
361f494d | 68 | cio_debug_msg_id = debug_register("cio_msg", 16, 1, 16 * sizeof(long)); |
1da177e4 LT |
69 | if (!cio_debug_msg_id) |
70 | goto out_unregister; | |
bc698bcf CH |
71 | debug_register_view(cio_debug_msg_id, &debug_sprintf_view); |
72 | debug_set_level(cio_debug_msg_id, 2); | |
361f494d | 73 | cio_debug_trace_id = debug_register("cio_trace", 16, 1, 16); |
1da177e4 LT |
74 | if (!cio_debug_trace_id) |
75 | goto out_unregister; | |
bc698bcf CH |
76 | debug_register_view(cio_debug_trace_id, &debug_hex_ascii_view); |
77 | debug_set_level(cio_debug_trace_id, 2); | |
361f494d | 78 | cio_debug_crw_id = debug_register("cio_crw", 16, 1, 16 * sizeof(long)); |
1da177e4 LT |
79 | if (!cio_debug_crw_id) |
80 | goto out_unregister; | |
bc698bcf CH |
81 | debug_register_view(cio_debug_crw_id, &debug_sprintf_view); |
82 | debug_set_level(cio_debug_crw_id, 4); | |
1da177e4 LT |
83 | return 0; |
84 | ||
85 | out_unregister: | |
86 | if (cio_debug_msg_id) | |
bc698bcf | 87 | debug_unregister(cio_debug_msg_id); |
1da177e4 | 88 | if (cio_debug_trace_id) |
bc698bcf | 89 | debug_unregister(cio_debug_trace_id); |
1da177e4 | 90 | if (cio_debug_crw_id) |
bc698bcf | 91 | debug_unregister(cio_debug_crw_id); |
e556bbbd | 92 | printk(KERN_WARNING"cio: could not initialize debugging\n"); |
1da177e4 LT |
93 | return -1; |
94 | } | |
95 | ||
96 | arch_initcall (cio_debug_init); | |
97 | ||
98 | int | |
99 | cio_set_options (struct subchannel *sch, int flags) | |
100 | { | |
101 | sch->options.suspend = (flags & DOIO_ALLOW_SUSPEND) != 0; | |
102 | sch->options.prefetch = (flags & DOIO_DENY_PREFETCH) != 0; | |
103 | sch->options.inter = (flags & DOIO_SUPPRESS_INTER) != 0; | |
104 | return 0; | |
105 | } | |
106 | ||
107 | /* FIXME: who wants to use this? */ | |
108 | int | |
109 | cio_get_options (struct subchannel *sch) | |
110 | { | |
111 | int flags; | |
112 | ||
113 | flags = 0; | |
114 | if (sch->options.suspend) | |
115 | flags |= DOIO_ALLOW_SUSPEND; | |
116 | if (sch->options.prefetch) | |
117 | flags |= DOIO_DENY_PREFETCH; | |
118 | if (sch->options.inter) | |
119 | flags |= DOIO_SUPPRESS_INTER; | |
120 | return flags; | |
121 | } | |
122 | ||
123 | /* | |
124 | * Use tpi to get a pending interrupt, call the interrupt handler and | |
125 | * return a pointer to the subchannel structure. | |
126 | */ | |
4d284cac | 127 | static int |
1da177e4 LT |
128 | cio_tpi(void) |
129 | { | |
130 | struct tpi_info *tpi_info; | |
131 | struct subchannel *sch; | |
132 | struct irb *irb; | |
133 | ||
134 | tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; | |
135 | if (tpi (NULL) != 1) | |
136 | return 0; | |
137 | irb = (struct irb *) __LC_IRB; | |
138 | /* Store interrupt response block to lowcore. */ | |
a8237fc4 | 139 | if (tsch (tpi_info->schid, irb) != 0) |
1da177e4 LT |
140 | /* Not status pending or not operational. */ |
141 | return 1; | |
142 | sch = (struct subchannel *)(unsigned long)tpi_info->intparm; | |
143 | if (!sch) | |
144 | return 1; | |
145 | local_bh_disable(); | |
146 | irq_enter (); | |
2ec22984 | 147 | spin_lock(sch->lock); |
1da177e4 LT |
148 | memcpy (&sch->schib.scsw, &irb->scsw, sizeof (struct scsw)); |
149 | if (sch->driver && sch->driver->irq) | |
602b20f2 | 150 | sch->driver->irq(sch); |
2ec22984 | 151 | spin_unlock(sch->lock); |
1da177e4 | 152 | irq_exit (); |
1f194a4c | 153 | _local_bh_enable(); |
1da177e4 LT |
154 | return 1; |
155 | } | |
156 | ||
4d284cac | 157 | static int |
1da177e4 LT |
158 | cio_start_handle_notoper(struct subchannel *sch, __u8 lpm) |
159 | { | |
160 | char dbf_text[15]; | |
161 | ||
162 | if (lpm != 0) | |
163 | sch->lpm &= ~lpm; | |
164 | else | |
165 | sch->lpm = 0; | |
166 | ||
a8237fc4 | 167 | stsch (sch->schid, &sch->schib); |
1da177e4 LT |
168 | |
169 | CIO_MSG_EVENT(0, "cio_start: 'not oper' status for " | |
fb6958a5 CH |
170 | "subchannel 0.%x.%04x!\n", sch->schid.ssid, |
171 | sch->schid.sch_no); | |
1da177e4 LT |
172 | sprintf(dbf_text, "no%s", sch->dev.bus_id); |
173 | CIO_TRACE_EVENT(0, dbf_text); | |
174 | CIO_HEX_EVENT(0, &sch->schib, sizeof (struct schib)); | |
175 | ||
176 | return (sch->lpm ? -EACCES : -ENODEV); | |
177 | } | |
178 | ||
179 | int | |
180 | cio_start_key (struct subchannel *sch, /* subchannel structure */ | |
181 | struct ccw1 * cpa, /* logical channel prog addr */ | |
182 | __u8 lpm, /* logical path mask */ | |
183 | __u8 key) /* storage key */ | |
184 | { | |
185 | char dbf_txt[15]; | |
186 | int ccode; | |
cd6b4f27 | 187 | struct orb *orb; |
1da177e4 | 188 | |
cd6b4f27 CH |
189 | CIO_TRACE_EVENT(4, "stIO"); |
190 | CIO_TRACE_EVENT(4, sch->dev.bus_id); | |
1da177e4 | 191 | |
cd6b4f27 | 192 | orb = &to_io_private(sch)->orb; |
1da177e4 | 193 | /* sch is always under 2G. */ |
cd6b4f27 CH |
194 | orb->intparm = (u32)(addr_t)sch; |
195 | orb->fmt = 1; | |
1da177e4 | 196 | |
cd6b4f27 CH |
197 | orb->pfch = sch->options.prefetch == 0; |
198 | orb->spnd = sch->options.suspend; | |
199 | orb->ssic = sch->options.suspend && sch->options.inter; | |
200 | orb->lpm = (lpm != 0) ? lpm : sch->lpm; | |
347a8dc3 | 201 | #ifdef CONFIG_64BIT |
1da177e4 LT |
202 | /* |
203 | * for 64 bit we always support 64 bit IDAWs with 4k page size only | |
204 | */ | |
cd6b4f27 CH |
205 | orb->c64 = 1; |
206 | orb->i2k = 0; | |
1da177e4 | 207 | #endif |
cd6b4f27 | 208 | orb->key = key >> 4; |
1da177e4 | 209 | /* issue "Start Subchannel" */ |
cd6b4f27 CH |
210 | orb->cpa = (__u32) __pa(cpa); |
211 | ccode = ssch(sch->schid, orb); | |
1da177e4 LT |
212 | |
213 | /* process condition code */ | |
cd6b4f27 CH |
214 | sprintf(dbf_txt, "ccode:%d", ccode); |
215 | CIO_TRACE_EVENT(4, dbf_txt); | |
1da177e4 LT |
216 | |
217 | switch (ccode) { | |
218 | case 0: | |
219 | /* | |
220 | * initialize device status information | |
221 | */ | |
222 | sch->schib.scsw.actl |= SCSW_ACTL_START_PEND; | |
223 | return 0; | |
224 | case 1: /* status pending */ | |
225 | case 2: /* busy */ | |
226 | return -EBUSY; | |
227 | default: /* device/path not operational */ | |
228 | return cio_start_handle_notoper(sch, lpm); | |
229 | } | |
230 | } | |
231 | ||
232 | int | |
233 | cio_start (struct subchannel *sch, struct ccw1 *cpa, __u8 lpm) | |
234 | { | |
0b642ede | 235 | return cio_start_key(sch, cpa, lpm, PAGE_DEFAULT_KEY); |
1da177e4 LT |
236 | } |
237 | ||
238 | /* | |
239 | * resume suspended I/O operation | |
240 | */ | |
241 | int | |
242 | cio_resume (struct subchannel *sch) | |
243 | { | |
244 | char dbf_txt[15]; | |
245 | int ccode; | |
246 | ||
247 | CIO_TRACE_EVENT (4, "resIO"); | |
248 | CIO_TRACE_EVENT (4, sch->dev.bus_id); | |
249 | ||
a8237fc4 | 250 | ccode = rsch (sch->schid); |
1da177e4 LT |
251 | |
252 | sprintf (dbf_txt, "ccode:%d", ccode); | |
253 | CIO_TRACE_EVENT (4, dbf_txt); | |
254 | ||
255 | switch (ccode) { | |
256 | case 0: | |
257 | sch->schib.scsw.actl |= SCSW_ACTL_RESUME_PEND; | |
258 | return 0; | |
259 | case 1: | |
260 | return -EBUSY; | |
261 | case 2: | |
262 | return -EINVAL; | |
263 | default: | |
264 | /* | |
265 | * useless to wait for request completion | |
266 | * as device is no longer operational ! | |
267 | */ | |
268 | return -ENODEV; | |
269 | } | |
270 | } | |
271 | ||
272 | /* | |
273 | * halt I/O operation | |
274 | */ | |
275 | int | |
276 | cio_halt(struct subchannel *sch) | |
277 | { | |
278 | char dbf_txt[15]; | |
279 | int ccode; | |
280 | ||
281 | if (!sch) | |
282 | return -ENODEV; | |
283 | ||
284 | CIO_TRACE_EVENT (2, "haltIO"); | |
285 | CIO_TRACE_EVENT (2, sch->dev.bus_id); | |
286 | ||
287 | /* | |
288 | * Issue "Halt subchannel" and process condition code | |
289 | */ | |
a8237fc4 | 290 | ccode = hsch (sch->schid); |
1da177e4 LT |
291 | |
292 | sprintf (dbf_txt, "ccode:%d", ccode); | |
293 | CIO_TRACE_EVENT (2, dbf_txt); | |
294 | ||
295 | switch (ccode) { | |
296 | case 0: | |
297 | sch->schib.scsw.actl |= SCSW_ACTL_HALT_PEND; | |
298 | return 0; | |
299 | case 1: /* status pending */ | |
300 | case 2: /* busy */ | |
301 | return -EBUSY; | |
302 | default: /* device not operational */ | |
303 | return -ENODEV; | |
304 | } | |
305 | } | |
306 | ||
307 | /* | |
308 | * Clear I/O operation | |
309 | */ | |
310 | int | |
311 | cio_clear(struct subchannel *sch) | |
312 | { | |
313 | char dbf_txt[15]; | |
314 | int ccode; | |
315 | ||
316 | if (!sch) | |
317 | return -ENODEV; | |
318 | ||
319 | CIO_TRACE_EVENT (2, "clearIO"); | |
320 | CIO_TRACE_EVENT (2, sch->dev.bus_id); | |
321 | ||
322 | /* | |
323 | * Issue "Clear subchannel" and process condition code | |
324 | */ | |
a8237fc4 | 325 | ccode = csch (sch->schid); |
1da177e4 LT |
326 | |
327 | sprintf (dbf_txt, "ccode:%d", ccode); | |
328 | CIO_TRACE_EVENT (2, dbf_txt); | |
329 | ||
330 | switch (ccode) { | |
331 | case 0: | |
332 | sch->schib.scsw.actl |= SCSW_ACTL_CLEAR_PEND; | |
333 | return 0; | |
334 | default: /* device not operational */ | |
335 | return -ENODEV; | |
336 | } | |
337 | } | |
338 | ||
339 | /* | |
340 | * Function: cio_cancel | |
341 | * Issues a "Cancel Subchannel" on the specified subchannel | |
342 | * Note: We don't need any fancy intparms and flags here | |
343 | * since xsch is executed synchronously. | |
344 | * Only for common I/O internal use as for now. | |
345 | */ | |
346 | int | |
347 | cio_cancel (struct subchannel *sch) | |
348 | { | |
349 | char dbf_txt[15]; | |
350 | int ccode; | |
351 | ||
352 | if (!sch) | |
353 | return -ENODEV; | |
354 | ||
355 | CIO_TRACE_EVENT (2, "cancelIO"); | |
356 | CIO_TRACE_EVENT (2, sch->dev.bus_id); | |
357 | ||
a8237fc4 | 358 | ccode = xsch (sch->schid); |
1da177e4 LT |
359 | |
360 | sprintf (dbf_txt, "ccode:%d", ccode); | |
361 | CIO_TRACE_EVENT (2, dbf_txt); | |
362 | ||
363 | switch (ccode) { | |
364 | case 0: /* success */ | |
365 | /* Update information in scsw. */ | |
a8237fc4 | 366 | stsch (sch->schid, &sch->schib); |
1da177e4 LT |
367 | return 0; |
368 | case 1: /* status pending */ | |
369 | return -EBUSY; | |
370 | case 2: /* not applicable */ | |
371 | return -EINVAL; | |
372 | default: /* not oper */ | |
373 | return -ENODEV; | |
374 | } | |
375 | } | |
376 | ||
377 | /* | |
378 | * Function: cio_modify | |
379 | * Issues a "Modify Subchannel" on the specified subchannel | |
380 | */ | |
381 | int | |
382 | cio_modify (struct subchannel *sch) | |
383 | { | |
384 | int ccode, retry, ret; | |
385 | ||
386 | ret = 0; | |
387 | for (retry = 0; retry < 5; retry++) { | |
a8237fc4 | 388 | ccode = msch_err (sch->schid, &sch->schib); |
1da177e4 LT |
389 | if (ccode < 0) /* -EIO if msch gets a program check. */ |
390 | return ccode; | |
391 | switch (ccode) { | |
392 | case 0: /* successfull */ | |
393 | return 0; | |
394 | case 1: /* status pending */ | |
395 | return -EBUSY; | |
396 | case 2: /* busy */ | |
397 | udelay (100); /* allow for recovery */ | |
398 | ret = -EBUSY; | |
399 | break; | |
400 | case 3: /* not operational */ | |
401 | return -ENODEV; | |
402 | } | |
403 | } | |
404 | return ret; | |
405 | } | |
406 | ||
407 | /* | |
408 | * Enable subchannel. | |
409 | */ | |
edf22096 | 410 | int cio_enable_subchannel(struct subchannel *sch, u32 intparm) |
1da177e4 LT |
411 | { |
412 | char dbf_txt[15]; | |
413 | int ccode; | |
414 | int retry; | |
415 | int ret; | |
416 | ||
417 | CIO_TRACE_EVENT (2, "ensch"); | |
418 | CIO_TRACE_EVENT (2, sch->dev.bus_id); | |
419 | ||
d7b5a4c9 CH |
420 | if (sch_is_pseudo_sch(sch)) |
421 | return -EINVAL; | |
a8237fc4 | 422 | ccode = stsch (sch->schid, &sch->schib); |
1da177e4 LT |
423 | if (ccode) |
424 | return -ENODEV; | |
425 | ||
426 | for (retry = 5, ret = 0; retry > 0; retry--) { | |
427 | sch->schib.pmcw.ena = 1; | |
edf22096 | 428 | sch->schib.pmcw.isc = sch->isc; |
b279a4f5 | 429 | sch->schib.pmcw.intparm = intparm; |
1da177e4 LT |
430 | ret = cio_modify(sch); |
431 | if (ret == -ENODEV) | |
432 | break; | |
433 | if (ret == -EIO) | |
434 | /* | |
435 | * Got a program check in cio_modify. Try without | |
436 | * the concurrent sense bit the next time. | |
437 | */ | |
438 | sch->schib.pmcw.csense = 0; | |
439 | if (ret == 0) { | |
a8237fc4 | 440 | stsch (sch->schid, &sch->schib); |
1da177e4 LT |
441 | if (sch->schib.pmcw.ena) |
442 | break; | |
443 | } | |
444 | if (ret == -EBUSY) { | |
445 | struct irb irb; | |
a8237fc4 | 446 | if (tsch(sch->schid, &irb) != 0) |
1da177e4 LT |
447 | break; |
448 | } | |
449 | } | |
450 | sprintf (dbf_txt, "ret:%d", ret); | |
451 | CIO_TRACE_EVENT (2, dbf_txt); | |
452 | return ret; | |
453 | } | |
454 | ||
455 | /* | |
456 | * Disable subchannel. | |
457 | */ | |
458 | int | |
459 | cio_disable_subchannel (struct subchannel *sch) | |
460 | { | |
461 | char dbf_txt[15]; | |
462 | int ccode; | |
463 | int retry; | |
464 | int ret; | |
465 | ||
466 | CIO_TRACE_EVENT (2, "dissch"); | |
467 | CIO_TRACE_EVENT (2, sch->dev.bus_id); | |
468 | ||
d7b5a4c9 CH |
469 | if (sch_is_pseudo_sch(sch)) |
470 | return 0; | |
a8237fc4 | 471 | ccode = stsch (sch->schid, &sch->schib); |
1da177e4 LT |
472 | if (ccode == 3) /* Not operational. */ |
473 | return -ENODEV; | |
474 | ||
475 | if (sch->schib.scsw.actl != 0) | |
476 | /* | |
477 | * the disable function must not be called while there are | |
478 | * requests pending for completion ! | |
479 | */ | |
480 | return -EBUSY; | |
481 | ||
482 | for (retry = 5, ret = 0; retry > 0; retry--) { | |
483 | sch->schib.pmcw.ena = 0; | |
484 | ret = cio_modify(sch); | |
485 | if (ret == -ENODEV) | |
486 | break; | |
487 | if (ret == -EBUSY) | |
488 | /* | |
489 | * The subchannel is busy or status pending. | |
490 | * We'll disable when the next interrupt was delivered | |
491 | * via the state machine. | |
492 | */ | |
493 | break; | |
494 | if (ret == 0) { | |
a8237fc4 | 495 | stsch (sch->schid, &sch->schib); |
1da177e4 LT |
496 | if (!sch->schib.pmcw.ena) |
497 | break; | |
498 | } | |
499 | } | |
500 | sprintf (dbf_txt, "ret:%d", ret); | |
501 | CIO_TRACE_EVENT (2, dbf_txt); | |
502 | return ret; | |
503 | } | |
504 | ||
d7b5a4c9 | 505 | int cio_create_sch_lock(struct subchannel *sch) |
2ec22984 CH |
506 | { |
507 | sch->lock = kmalloc(sizeof(spinlock_t), GFP_KERNEL); | |
508 | if (!sch->lock) | |
509 | return -ENOMEM; | |
510 | spin_lock_init(sch->lock); | |
511 | return 0; | |
512 | } | |
513 | ||
1da177e4 LT |
514 | /* |
515 | * cio_validate_subchannel() | |
516 | * | |
517 | * Find out subchannel type and initialize struct subchannel. | |
518 | * Return codes: | |
519 | * SUBCHANNEL_TYPE_IO for a normal io subchannel | |
520 | * SUBCHANNEL_TYPE_CHSC for a chsc subchannel | |
521 | * SUBCHANNEL_TYPE_MESSAGE for a messaging subchannel | |
522 | * SUBCHANNEL_TYPE_ADM for a adm(?) subchannel | |
523 | * -ENXIO for non-defined subchannels | |
524 | * -ENODEV for subchannels with invalid device number or blacklisted devices | |
525 | */ | |
526 | int | |
a8237fc4 | 527 | cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid) |
1da177e4 LT |
528 | { |
529 | char dbf_txt[15]; | |
530 | int ccode; | |
2ec22984 | 531 | int err; |
1da177e4 | 532 | |
a8237fc4 | 533 | sprintf (dbf_txt, "valsch%x", schid.sch_no); |
1da177e4 LT |
534 | CIO_TRACE_EVENT (4, dbf_txt); |
535 | ||
536 | /* Nuke all fields. */ | |
537 | memset(sch, 0, sizeof(struct subchannel)); | |
538 | ||
2ec22984 CH |
539 | sch->schid = schid; |
540 | if (cio_is_console(schid)) { | |
541 | sch->lock = cio_get_console_lock(); | |
542 | } else { | |
543 | err = cio_create_sch_lock(sch); | |
544 | if (err) | |
545 | goto out; | |
546 | } | |
6ab4879a | 547 | mutex_init(&sch->reg_mutex); |
1da177e4 | 548 | /* Set a name for the subchannel */ |
fb6958a5 CH |
549 | snprintf (sch->dev.bus_id, BUS_ID_SIZE, "0.%x.%04x", schid.ssid, |
550 | schid.sch_no); | |
1da177e4 LT |
551 | |
552 | /* | |
553 | * The first subchannel that is not-operational (ccode==3) | |
554 | * indicates that there aren't any more devices available. | |
fb6958a5 CH |
555 | * If stsch gets an exception, it means the current subchannel set |
556 | * is not valid. | |
1da177e4 | 557 | */ |
fb6958a5 | 558 | ccode = stsch_err (schid, &sch->schib); |
2ec22984 CH |
559 | if (ccode) { |
560 | err = (ccode == 3) ? -ENXIO : ccode; | |
561 | goto out; | |
562 | } | |
1da177e4 LT |
563 | /* Copy subchannel type from path management control word. */ |
564 | sch->st = sch->schib.pmcw.st; | |
565 | ||
566 | /* | |
567 | * ... just being curious we check for non I/O subchannels | |
568 | */ | |
569 | if (sch->st != 0) { | |
570 | CIO_DEBUG(KERN_INFO, 0, | |
bc698bcf | 571 | "Subchannel 0.%x.%04x reports " |
1da177e4 | 572 | "non-I/O subchannel type %04X\n", |
fb6958a5 | 573 | sch->schid.ssid, sch->schid.sch_no, sch->st); |
1da177e4 | 574 | /* We stop here for non-io subchannels. */ |
2ec22984 CH |
575 | err = sch->st; |
576 | goto out; | |
1da177e4 LT |
577 | } |
578 | ||
579 | /* Initialization for io subchannels. */ | |
808e4888 ME |
580 | if (!css_sch_is_valid(&sch->schib)) { |
581 | err = -ENODEV; | |
582 | goto out; | |
583 | } | |
584 | ||
1da177e4 | 585 | /* Devno is valid. */ |
fb6958a5 | 586 | if (is_blacklisted (sch->schid.ssid, sch->schib.pmcw.dev)) { |
1da177e4 LT |
587 | /* |
588 | * This device must not be known to Linux. So we simply | |
589 | * say that there is no device and return ENODEV. | |
590 | */ | |
347d59d7 | 591 | CIO_MSG_EVENT(4, "Blacklisted device detected " |
fb6958a5 CH |
592 | "at devno %04X, subchannel set %x\n", |
593 | sch->schib.pmcw.dev, sch->schid.ssid); | |
2ec22984 CH |
594 | err = -ENODEV; |
595 | goto out; | |
1da177e4 | 596 | } |
e6b6e10a PO |
597 | if (cio_is_console(sch->schid)) |
598 | sch->opm = 0xff; | |
599 | else | |
600 | sch->opm = chp_get_sch_opm(sch); | |
28bdc6f6 | 601 | sch->lpm = sch->schib.pmcw.pam & sch->opm; |
edf22096 | 602 | sch->isc = 3; |
1da177e4 LT |
603 | |
604 | CIO_DEBUG(KERN_INFO, 0, | |
bc698bcf | 605 | "Detected device %04x on subchannel 0.%x.%04X" |
1da177e4 | 606 | " - PIM = %02X, PAM = %02X, POM = %02X\n", |
fb6958a5 CH |
607 | sch->schib.pmcw.dev, sch->schid.ssid, |
608 | sch->schid.sch_no, sch->schib.pmcw.pim, | |
1da177e4 LT |
609 | sch->schib.pmcw.pam, sch->schib.pmcw.pom); |
610 | ||
611 | /* | |
612 | * We now have to initially ... | |
1da177e4 LT |
613 | * ... enable "concurrent sense" |
614 | * ... enable "multipath mode" if more than one | |
615 | * CHPID is available. This is done regardless | |
616 | * whether multiple paths are available for us. | |
617 | */ | |
1da177e4 LT |
618 | sch->schib.pmcw.csense = 1; /* concurrent sense */ |
619 | sch->schib.pmcw.ena = 0; | |
620 | if ((sch->lpm & (sch->lpm - 1)) != 0) | |
621 | sch->schib.pmcw.mp = 1; /* multipath mode */ | |
1842f2b1 CH |
622 | /* clean up possible residual cmf stuff */ |
623 | sch->schib.pmcw.mme = 0; | |
624 | sch->schib.pmcw.mbfc = 0; | |
625 | sch->schib.pmcw.mbi = 0; | |
626 | sch->schib.mba = 0; | |
1da177e4 | 627 | return 0; |
2ec22984 CH |
628 | out: |
629 | if (!cio_is_console(schid)) | |
630 | kfree(sch->lock); | |
631 | sch->lock = NULL; | |
632 | return err; | |
1da177e4 LT |
633 | } |
634 | ||
635 | /* | |
636 | * do_IRQ() handles all normal I/O device IRQ's (the special | |
637 | * SMP cross-CPU interrupts have their own specific | |
638 | * handlers). | |
639 | * | |
640 | */ | |
641 | void | |
642 | do_IRQ (struct pt_regs *regs) | |
643 | { | |
644 | struct tpi_info *tpi_info; | |
645 | struct subchannel *sch; | |
646 | struct irb *irb; | |
5a489b98 | 647 | struct pt_regs *old_regs; |
1da177e4 | 648 | |
5a489b98 | 649 | old_regs = set_irq_regs(regs); |
9d0a57cb | 650 | irq_enter(); |
43ca5c3a | 651 | s390_idle_check(); |
5a62b192 HC |
652 | if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator) |
653 | /* Serve timer interrupts first. */ | |
654 | clock_comparator_work(); | |
1da177e4 LT |
655 | /* |
656 | * Get interrupt information from lowcore | |
657 | */ | |
658 | tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; | |
659 | irb = (struct irb *) __LC_IRB; | |
660 | do { | |
661 | kstat_cpu(smp_processor_id()).irqs[IO_INTERRUPT]++; | |
662 | /* | |
663 | * Non I/O-subchannel thin interrupts are processed differently | |
664 | */ | |
665 | if (tpi_info->adapter_IO == 1 && | |
666 | tpi_info->int_type == IO_INTERRUPT_TYPE) { | |
667 | do_adapter_IO(); | |
668 | continue; | |
669 | } | |
670 | sch = (struct subchannel *)(unsigned long)tpi_info->intparm; | |
a806170e HC |
671 | if (!sch) { |
672 | /* Clear pending interrupt condition. */ | |
673 | tsch(tpi_info->schid, irb); | |
674 | continue; | |
675 | } | |
676 | spin_lock(sch->lock); | |
1da177e4 | 677 | /* Store interrupt response block to lowcore. */ |
a806170e | 678 | if (tsch(tpi_info->schid, irb) == 0) { |
1da177e4 LT |
679 | /* Keep subchannel information word up to date. */ |
680 | memcpy (&sch->schib.scsw, &irb->scsw, | |
681 | sizeof (irb->scsw)); | |
682 | /* Call interrupt handler if there is one. */ | |
683 | if (sch->driver && sch->driver->irq) | |
602b20f2 | 684 | sch->driver->irq(sch); |
1da177e4 | 685 | } |
a806170e | 686 | spin_unlock(sch->lock); |
1da177e4 LT |
687 | /* |
688 | * Are more interrupts pending? | |
689 | * If so, the tpi instruction will update the lowcore | |
690 | * to hold the info for the next interrupt. | |
691 | * We don't do this for VM because a tpi drops the cpu | |
692 | * out of the sie which costs more cycles than it saves. | |
693 | */ | |
694 | } while (!MACHINE_IS_VM && tpi (NULL) != 0); | |
9d0a57cb | 695 | irq_exit(); |
5a489b98 | 696 | set_irq_regs(old_regs); |
1da177e4 LT |
697 | } |
698 | ||
699 | #ifdef CONFIG_CCW_CONSOLE | |
700 | static struct subchannel console_subchannel; | |
cd6b4f27 | 701 | static struct io_subchannel_private console_priv; |
1da177e4 LT |
702 | static int console_subchannel_in_use; |
703 | ||
cd6b4f27 CH |
704 | void *cio_get_console_priv(void) |
705 | { | |
706 | return &console_priv; | |
707 | } | |
708 | ||
1da177e4 LT |
709 | /* |
710 | * busy wait for the next interrupt on the console | |
711 | */ | |
a806170e HC |
712 | void wait_cons_dev(void) |
713 | __releases(console_subchannel.lock) | |
714 | __acquires(console_subchannel.lock) | |
1da177e4 LT |
715 | { |
716 | unsigned long cr6 __attribute__ ((aligned (8))); | |
717 | unsigned long save_cr6 __attribute__ ((aligned (8))); | |
718 | ||
719 | /* | |
720 | * before entering the spinlock we may already have | |
721 | * processed the interrupt on a different CPU... | |
722 | */ | |
723 | if (!console_subchannel_in_use) | |
724 | return; | |
725 | ||
726 | /* disable all but isc 7 (console device) */ | |
727 | __ctl_store (save_cr6, 6, 6); | |
728 | cr6 = 0x01000000; | |
729 | __ctl_load (cr6, 6, 6); | |
730 | ||
731 | do { | |
2ec22984 | 732 | spin_unlock(console_subchannel.lock); |
1da177e4 LT |
733 | if (!cio_tpi()) |
734 | cpu_relax(); | |
2ec22984 | 735 | spin_lock(console_subchannel.lock); |
1da177e4 LT |
736 | } while (console_subchannel.schib.scsw.actl != 0); |
737 | /* | |
738 | * restore previous isc value | |
739 | */ | |
740 | __ctl_load (save_cr6, 6, 6); | |
741 | } | |
742 | ||
743 | static int | |
f97a56fb CH |
744 | cio_test_for_console(struct subchannel_id schid, void *data) |
745 | { | |
fb6958a5 | 746 | if (stsch_err(schid, &console_subchannel.schib) != 0) |
f97a56fb | 747 | return -ENXIO; |
b279a4f5 CH |
748 | if ((console_subchannel.schib.pmcw.st == SUBCHANNEL_TYPE_IO) && |
749 | console_subchannel.schib.pmcw.dnv && | |
750 | (console_subchannel.schib.pmcw.dev == console_devno)) { | |
f97a56fb CH |
751 | console_irq = schid.sch_no; |
752 | return 1; /* found */ | |
753 | } | |
754 | return 0; | |
755 | } | |
756 | ||
757 | ||
758 | static int | |
759 | cio_get_console_sch_no(void) | |
1da177e4 | 760 | { |
a8237fc4 | 761 | struct subchannel_id schid; |
1da177e4 | 762 | |
a8237fc4 | 763 | init_subchannel_id(&schid); |
1da177e4 LT |
764 | if (console_irq != -1) { |
765 | /* VM provided us with the irq number of the console. */ | |
a8237fc4 CH |
766 | schid.sch_no = console_irq; |
767 | if (stsch(schid, &console_subchannel.schib) != 0 || | |
b279a4f5 | 768 | (console_subchannel.schib.pmcw.st != SUBCHANNEL_TYPE_IO) || |
1da177e4 LT |
769 | !console_subchannel.schib.pmcw.dnv) |
770 | return -1; | |
771 | console_devno = console_subchannel.schib.pmcw.dev; | |
772 | } else if (console_devno != -1) { | |
773 | /* At least the console device number is known. */ | |
f97a56fb | 774 | for_each_subchannel(cio_test_for_console, NULL); |
1da177e4 LT |
775 | if (console_irq == -1) |
776 | return -1; | |
777 | } else { | |
778 | /* unlike in 2.4, we cannot autoprobe here, since | |
779 | * the channel subsystem is not fully initialized. | |
780 | * With some luck, the HWC console can take over */ | |
e556bbbd | 781 | printk(KERN_WARNING "cio: No ccw console found!\n"); |
1da177e4 LT |
782 | return -1; |
783 | } | |
784 | return console_irq; | |
785 | } | |
786 | ||
787 | struct subchannel * | |
788 | cio_probe_console(void) | |
789 | { | |
f97a56fb | 790 | int sch_no, ret; |
a8237fc4 | 791 | struct subchannel_id schid; |
1da177e4 LT |
792 | |
793 | if (xchg(&console_subchannel_in_use, 1) != 0) | |
794 | return ERR_PTR(-EBUSY); | |
f97a56fb CH |
795 | sch_no = cio_get_console_sch_no(); |
796 | if (sch_no == -1) { | |
1da177e4 LT |
797 | console_subchannel_in_use = 0; |
798 | return ERR_PTR(-ENODEV); | |
799 | } | |
800 | memset(&console_subchannel, 0, sizeof(struct subchannel)); | |
a8237fc4 | 801 | init_subchannel_id(&schid); |
f97a56fb | 802 | schid.sch_no = sch_no; |
a8237fc4 | 803 | ret = cio_validate_subchannel(&console_subchannel, schid); |
1da177e4 LT |
804 | if (ret) { |
805 | console_subchannel_in_use = 0; | |
806 | return ERR_PTR(-ENODEV); | |
807 | } | |
808 | ||
809 | /* | |
810 | * enable console I/O-interrupt subclass 7 | |
811 | */ | |
812 | ctl_set_bit(6, 24); | |
edf22096 | 813 | console_subchannel.isc = 7; |
1da177e4 LT |
814 | console_subchannel.schib.pmcw.isc = 7; |
815 | console_subchannel.schib.pmcw.intparm = | |
cd6b4f27 | 816 | (u32)(addr_t)&console_subchannel; |
1da177e4 LT |
817 | ret = cio_modify(&console_subchannel); |
818 | if (ret) { | |
819 | console_subchannel_in_use = 0; | |
820 | return ERR_PTR(ret); | |
821 | } | |
822 | return &console_subchannel; | |
823 | } | |
824 | ||
825 | void | |
826 | cio_release_console(void) | |
827 | { | |
828 | console_subchannel.schib.pmcw.intparm = 0; | |
829 | cio_modify(&console_subchannel); | |
830 | ctl_clear_bit(6, 24); | |
831 | console_subchannel_in_use = 0; | |
832 | } | |
833 | ||
834 | /* Bah... hack to catch console special sausages. */ | |
835 | int | |
a8237fc4 | 836 | cio_is_console(struct subchannel_id schid) |
1da177e4 LT |
837 | { |
838 | if (!console_subchannel_in_use) | |
839 | return 0; | |
a8237fc4 | 840 | return schid_equal(&schid, &console_subchannel.schid); |
1da177e4 LT |
841 | } |
842 | ||
843 | struct subchannel * | |
844 | cio_get_console_subchannel(void) | |
845 | { | |
846 | if (!console_subchannel_in_use) | |
d2c993d8 | 847 | return NULL; |
1da177e4 LT |
848 | return &console_subchannel; |
849 | } | |
850 | ||
851 | #endif | |
4d284cac | 852 | static int |
a8237fc4 | 853 | __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib) |
1da177e4 LT |
854 | { |
855 | int retry, cc; | |
856 | ||
857 | cc = 0; | |
858 | for (retry=0;retry<3;retry++) { | |
859 | schib->pmcw.ena = 0; | |
860 | cc = msch(schid, schib); | |
861 | if (cc) | |
862 | return (cc==3?-ENODEV:-EBUSY); | |
863 | stsch(schid, schib); | |
864 | if (!schib->pmcw.ena) | |
865 | return 0; | |
866 | } | |
867 | return -EBUSY; /* uhm... */ | |
868 | } | |
869 | ||
d54853ef MS |
870 | /* we can't use the normal udelay here, since it enables external interrupts */ |
871 | ||
872 | static void udelay_reset(unsigned long usecs) | |
873 | { | |
874 | uint64_t start_cc, end_cc; | |
875 | ||
876 | asm volatile ("STCK %0" : "=m" (start_cc)); | |
877 | do { | |
878 | cpu_relax(); | |
879 | asm volatile ("STCK %0" : "=m" (end_cc)); | |
880 | } while (((end_cc - start_cc)/4096) < usecs); | |
881 | } | |
882 | ||
4d284cac | 883 | static int |
a8237fc4 | 884 | __clear_subchannel_easy(struct subchannel_id schid) |
1da177e4 LT |
885 | { |
886 | int retry; | |
887 | ||
888 | if (csch(schid)) | |
889 | return -ENODEV; | |
890 | for (retry=0;retry<20;retry++) { | |
891 | struct tpi_info ti; | |
892 | ||
893 | if (tpi(&ti)) { | |
a8237fc4 CH |
894 | tsch(ti.schid, (struct irb *)__LC_IRB); |
895 | if (schid_equal(&ti.schid, &schid)) | |
4c24da79 | 896 | return 0; |
1da177e4 | 897 | } |
d54853ef | 898 | udelay_reset(100); |
1da177e4 LT |
899 | } |
900 | return -EBUSY; | |
901 | } | |
902 | ||
a45e1414 MH |
903 | static int pgm_check_occured; |
904 | ||
905 | static void cio_reset_pgm_check_handler(void) | |
906 | { | |
907 | pgm_check_occured = 1; | |
908 | } | |
909 | ||
910 | static int stsch_reset(struct subchannel_id schid, volatile struct schib *addr) | |
911 | { | |
912 | int rc; | |
913 | ||
914 | pgm_check_occured = 0; | |
ab14de6c | 915 | s390_base_pgm_handler_fn = cio_reset_pgm_check_handler; |
6faf4444 | 916 | rc = stsch(schid, addr); |
ab14de6c | 917 | s390_base_pgm_handler_fn = NULL; |
aa77015c | 918 | |
ab14de6c | 919 | /* The program check handler could have changed pgm_check_occured. */ |
6faf4444 | 920 | barrier(); |
aa77015c | 921 | |
a45e1414 MH |
922 | if (pgm_check_occured) |
923 | return -EIO; | |
924 | else | |
925 | return rc; | |
926 | } | |
927 | ||
15e9b586 | 928 | static int __shutdown_subchannel_easy(struct subchannel_id schid, void *data) |
f97a56fb CH |
929 | { |
930 | struct schib schib; | |
931 | ||
a45e1414 | 932 | if (stsch_reset(schid, &schib)) |
f97a56fb CH |
933 | return -ENXIO; |
934 | if (!schib.pmcw.ena) | |
935 | return 0; | |
936 | switch(__disable_subchannel_easy(schid, &schib)) { | |
937 | case 0: | |
938 | case -ENODEV: | |
939 | break; | |
940 | default: /* -EBUSY */ | |
941 | if (__clear_subchannel_easy(schid)) | |
942 | break; /* give up... */ | |
943 | stsch(schid, &schib); | |
944 | __disable_subchannel_easy(schid, &schib); | |
945 | } | |
946 | return 0; | |
947 | } | |
1da177e4 | 948 | |
15e9b586 HC |
949 | static atomic_t chpid_reset_count; |
950 | ||
951 | static void s390_reset_chpids_mcck_handler(void) | |
952 | { | |
953 | struct crw crw; | |
954 | struct mci *mci; | |
955 | ||
956 | /* Check for pending channel report word. */ | |
957 | mci = (struct mci *)&S390_lowcore.mcck_interruption_code; | |
958 | if (!mci->cp) | |
959 | return; | |
960 | /* Process channel report words. */ | |
961 | while (stcrw(&crw) == 0) { | |
962 | /* Check for responses to RCHP. */ | |
963 | if (crw.slct && crw.rsc == CRW_RSC_CPATH) | |
964 | atomic_dec(&chpid_reset_count); | |
965 | } | |
966 | } | |
967 | ||
968 | #define RCHP_TIMEOUT (30 * USEC_PER_SEC) | |
969 | static void css_reset(void) | |
970 | { | |
971 | int i, ret; | |
972 | unsigned long long timeout; | |
f86635fa | 973 | struct chp_id chpid; |
15e9b586 HC |
974 | |
975 | /* Reset subchannels. */ | |
976 | for_each_subchannel(__shutdown_subchannel_easy, NULL); | |
977 | /* Reset channel paths. */ | |
ab14de6c | 978 | s390_base_mcck_handler_fn = s390_reset_chpids_mcck_handler; |
15e9b586 HC |
979 | /* Enable channel report machine checks. */ |
980 | __ctl_set_bit(14, 28); | |
981 | /* Temporarily reenable machine checks. */ | |
982 | local_mcck_enable(); | |
f86635fa | 983 | chp_id_init(&chpid); |
15e9b586 | 984 | for (i = 0; i <= __MAX_CHPID; i++) { |
f86635fa PO |
985 | chpid.id = i; |
986 | ret = rchp(chpid); | |
15e9b586 HC |
987 | if ((ret == 0) || (ret == 2)) |
988 | /* | |
989 | * rchp either succeeded, or another rchp is already | |
990 | * in progress. In either case, we'll get a crw. | |
991 | */ | |
992 | atomic_inc(&chpid_reset_count); | |
993 | } | |
994 | /* Wait for machine check for all channel paths. */ | |
995 | timeout = get_clock() + (RCHP_TIMEOUT << 12); | |
996 | while (atomic_read(&chpid_reset_count) != 0) { | |
997 | if (get_clock() > timeout) | |
998 | break; | |
999 | cpu_relax(); | |
1000 | } | |
1001 | /* Disable machine checks again. */ | |
1002 | local_mcck_disable(); | |
1003 | /* Disable channel report machine checks. */ | |
1004 | __ctl_clear_bit(14, 28); | |
ab14de6c | 1005 | s390_base_mcck_handler_fn = NULL; |
15e9b586 HC |
1006 | } |
1007 | ||
1008 | static struct reset_call css_reset_call = { | |
1009 | .fn = css_reset, | |
1010 | }; | |
1011 | ||
1012 | static int __init init_css_reset_call(void) | |
1013 | { | |
1014 | atomic_set(&chpid_reset_count, 0); | |
1015 | register_reset_call(&css_reset_call); | |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | arch_initcall(init_css_reset_call); | |
1020 | ||
1021 | struct sch_match_id { | |
1022 | struct subchannel_id schid; | |
1023 | struct ccw_dev_id devid; | |
1024 | int rc; | |
1025 | }; | |
1026 | ||
1027 | static int __reipl_subchannel_match(struct subchannel_id schid, void *data) | |
1028 | { | |
1029 | struct schib schib; | |
1030 | struct sch_match_id *match_id = data; | |
1031 | ||
a45e1414 | 1032 | if (stsch_reset(schid, &schib)) |
15e9b586 | 1033 | return -ENXIO; |
b279a4f5 | 1034 | if ((schib.pmcw.st == SUBCHANNEL_TYPE_IO) && schib.pmcw.dnv && |
15e9b586 HC |
1035 | (schib.pmcw.dev == match_id->devid.devno) && |
1036 | (schid.ssid == match_id->devid.ssid)) { | |
1037 | match_id->schid = schid; | |
1038 | match_id->rc = 0; | |
1039 | return 1; | |
1040 | } | |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | static int reipl_find_schid(struct ccw_dev_id *devid, | |
1045 | struct subchannel_id *schid) | |
1da177e4 | 1046 | { |
ff6b8ea6 MH |
1047 | struct sch_match_id match_id; |
1048 | ||
1049 | match_id.devid = *devid; | |
1050 | match_id.rc = -ENODEV; | |
15e9b586 | 1051 | for_each_subchannel(__reipl_subchannel_match, &match_id); |
ff6b8ea6 MH |
1052 | if (match_id.rc == 0) |
1053 | *schid = match_id.schid; | |
1054 | return match_id.rc; | |
1da177e4 LT |
1055 | } |
1056 | ||
ff6b8ea6 MH |
1057 | extern void do_reipl_asm(__u32 schid); |
1058 | ||
1da177e4 | 1059 | /* Make sure all subchannels are quiet before we re-ipl an lpar. */ |
ff6b8ea6 | 1060 | void reipl_ccw_dev(struct ccw_dev_id *devid) |
1da177e4 | 1061 | { |
ff6b8ea6 MH |
1062 | struct subchannel_id schid; |
1063 | ||
15e9b586 HC |
1064 | s390_reset_system(); |
1065 | if (reipl_find_schid(devid, &schid) != 0) | |
ff6b8ea6 | 1066 | panic("IPL Device not found\n"); |
ff6b8ea6 | 1067 | do_reipl_asm(*((__u32*)&schid)); |
1da177e4 | 1068 | } |
e87bfe51 | 1069 | |
6fc321fd | 1070 | int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo) |
e87bfe51 HC |
1071 | { |
1072 | struct subchannel_id schid; | |
6fc321fd | 1073 | struct schib schib; |
e87bfe51 HC |
1074 | |
1075 | schid = *(struct subchannel_id *)__LC_SUBCHANNEL_ID; | |
1076 | if (!schid.one) | |
6fc321fd HC |
1077 | return -ENODEV; |
1078 | if (stsch(schid, &schib)) | |
1079 | return -ENODEV; | |
b279a4f5 CH |
1080 | if (schib.pmcw.st != SUBCHANNEL_TYPE_IO) |
1081 | return -ENODEV; | |
6fc321fd HC |
1082 | if (!schib.pmcw.dnv) |
1083 | return -ENODEV; | |
1084 | iplinfo->devno = schib.pmcw.dev; | |
1085 | iplinfo->is_qdio = schib.pmcw.qf; | |
1086 | return 0; | |
e87bfe51 | 1087 | } |