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10#include <linux/device.h>
11#include <linux/module.h>
12#include <linux/uaccess.h>
13#include <linux/miscdevice.h>
14
15#include <asm/cio.h>
16#include <asm/chsc.h>
17#include <asm/isc.h>
18
19#include "cio.h"
20#include "cio_debug.h"
21#include "css.h"
22#include "chsc_sch.h"
23#include "ioasm.h"
24
25static debug_info_t *chsc_debug_msg_id;
26static debug_info_t *chsc_debug_log_id;
27
28#define CHSC_MSG(imp, args...) do { \
29 debug_sprintf_event(chsc_debug_msg_id, imp , ##args); \
30 } while (0)
31
32#define CHSC_LOG(imp, txt) do { \
33 debug_text_event(chsc_debug_log_id, imp , txt); \
34 } while (0)
35
36static void CHSC_LOG_HEX(int level, void *data, int length)
37{
38 while (length > 0) {
39 debug_event(chsc_debug_log_id, level, data, length);
40 length -= chsc_debug_log_id->buf_size;
41 data += chsc_debug_log_id->buf_size;
42 }
43}
44
45MODULE_AUTHOR("IBM Corporation");
46MODULE_DESCRIPTION("driver for s390 chsc subchannels");
47MODULE_LICENSE("GPL");
48
49static void chsc_subchannel_irq(struct subchannel *sch)
50{
51 struct chsc_private *private = sch->private;
52 struct chsc_request *request = private->request;
53 struct irb *irb = (struct irb *)__LC_IRB;
54
55 CHSC_LOG(4, "irb");
56 CHSC_LOG_HEX(4, irb, sizeof(*irb));
57
58 if (!request) {
59 CHSC_MSG(0, "Interrupt on sch 0.%x.%04x with no request\n",
60 sch->schid.ssid, sch->schid.sch_no);
61 return;
62 }
63 private->request = NULL;
64 memcpy(&request->irb, irb, sizeof(*irb));
65 cio_update_schib(sch);
66 complete(&request->completion);
67 put_device(&sch->dev);
68}
69
70static int chsc_subchannel_probe(struct subchannel *sch)
71{
72 struct chsc_private *private;
73 int ret;
74
75 CHSC_MSG(6, "Detected chsc subchannel 0.%x.%04x\n",
76 sch->schid.ssid, sch->schid.sch_no);
77 sch->isc = CHSC_SCH_ISC;
78 private = kzalloc(sizeof(*private), GFP_KERNEL);
79 if (!private)
80 return -ENOMEM;
81 ret = cio_enable_subchannel(sch, (u32)(unsigned long)sch);
82 if (ret) {
83 CHSC_MSG(0, "Failed to enable 0.%x.%04x: %d\n",
84 sch->schid.ssid, sch->schid.sch_no, ret);
85 kfree(private);
86 } else {
87 sch->private = private;
88 if (dev_get_uevent_suppress(&sch->dev)) {
89 dev_set_uevent_suppress(&sch->dev, 0);
90 kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
91 }
92 }
93 return ret;
94}
95
96static int chsc_subchannel_remove(struct subchannel *sch)
97{
98 struct chsc_private *private;
99
100 cio_disable_subchannel(sch);
101 private = sch->private;
102 sch->private = NULL;
103 if (private->request) {
104 complete(&private->request->completion);
105 put_device(&sch->dev);
106 }
107 kfree(private);
108 return 0;
109}
110
111static void chsc_subchannel_shutdown(struct subchannel *sch)
112{
113 cio_disable_subchannel(sch);
114}
115
116static int chsc_subchannel_prepare(struct subchannel *sch)
117{
118 int cc;
119 struct schib schib;
120
121
122
123
124
125 cc = stsch(sch->schid, &schib);
126 if (!cc && scsw_stctl(&schib.scsw))
127 return -EAGAIN;
128 return 0;
129}
130
131static int chsc_subchannel_freeze(struct subchannel *sch)
132{
133 return cio_disable_subchannel(sch);
134}
135
136static int chsc_subchannel_restore(struct subchannel *sch)
137{
138 return cio_enable_subchannel(sch, (u32)(unsigned long)sch);
139}
140
141static struct css_device_id chsc_subchannel_ids[] = {
142 { .match_flags = 0x1, .type =SUBCHANNEL_TYPE_CHSC, },
143 { },
144};
145MODULE_DEVICE_TABLE(css, chsc_subchannel_ids);
146
147static struct css_driver chsc_subchannel_driver = {
148 .owner = THIS_MODULE,
149 .subchannel_type = chsc_subchannel_ids,
150 .irq = chsc_subchannel_irq,
151 .probe = chsc_subchannel_probe,
152 .remove = chsc_subchannel_remove,
153 .shutdown = chsc_subchannel_shutdown,
154 .prepare = chsc_subchannel_prepare,
155 .freeze = chsc_subchannel_freeze,
156 .thaw = chsc_subchannel_restore,
157 .restore = chsc_subchannel_restore,
158 .name = "chsc_subchannel",
159};
160
161static int __init chsc_init_dbfs(void)
162{
163 chsc_debug_msg_id = debug_register("chsc_msg", 16, 1,
164 16 * sizeof(long));
165 if (!chsc_debug_msg_id)
166 goto out;
167 debug_register_view(chsc_debug_msg_id, &debug_sprintf_view);
168 debug_set_level(chsc_debug_msg_id, 2);
169 chsc_debug_log_id = debug_register("chsc_log", 16, 1, 16);
170 if (!chsc_debug_log_id)
171 goto out;
172 debug_register_view(chsc_debug_log_id, &debug_hex_ascii_view);
173 debug_set_level(chsc_debug_log_id, 2);
174 return 0;
175out:
176 if (chsc_debug_msg_id)
177 debug_unregister(chsc_debug_msg_id);
178 return -ENOMEM;
179}
180
181static void chsc_remove_dbfs(void)
182{
183 debug_unregister(chsc_debug_log_id);
184 debug_unregister(chsc_debug_msg_id);
185}
186
187static int __init chsc_init_sch_driver(void)
188{
189 return css_driver_register(&chsc_subchannel_driver);
190}
191
192static void chsc_cleanup_sch_driver(void)
193{
194 css_driver_unregister(&chsc_subchannel_driver);
195}
196
197static DEFINE_SPINLOCK(chsc_lock);
198
199static int chsc_subchannel_match_next_free(struct device *dev, void *data)
200{
201 struct subchannel *sch = to_subchannel(dev);
202
203 return sch->schib.pmcw.ena && !scsw_fctl(&sch->schib.scsw);
204}
205
206static struct subchannel *chsc_get_next_subchannel(struct subchannel *sch)
207{
208 struct device *dev;
209
210 dev = driver_find_device(&chsc_subchannel_driver.drv,
211 sch ? &sch->dev : NULL, NULL,
212 chsc_subchannel_match_next_free);
213 return dev ? to_subchannel(dev) : NULL;
214}
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230static int chsc_async(struct chsc_async_area *chsc_area,
231 struct chsc_request *request)
232{
233 int cc;
234 struct chsc_private *private;
235 struct subchannel *sch = NULL;
236 int ret = -ENODEV;
237 char dbf[10];
238
239 chsc_area->header.key = PAGE_DEFAULT_KEY;
240 while ((sch = chsc_get_next_subchannel(sch))) {
241 spin_lock(sch->lock);
242 private = sch->private;
243 if (private->request) {
244 spin_unlock(sch->lock);
245 ret = -EBUSY;
246 continue;
247 }
248 chsc_area->header.sid = sch->schid;
249 CHSC_LOG(2, "schid");
250 CHSC_LOG_HEX(2, &sch->schid, sizeof(sch->schid));
251 cc = chsc(chsc_area);
252 sprintf(dbf, "cc:%d", cc);
253 CHSC_LOG(2, dbf);
254 switch (cc) {
255 case 0:
256 ret = 0;
257 break;
258 case 1:
259 sch->schib.scsw.cmd.fctl |= SCSW_FCTL_START_FUNC;
260 ret = -EINPROGRESS;
261 private->request = request;
262 break;
263 case 2:
264 ret = -EBUSY;
265 break;
266 default:
267 ret = -ENODEV;
268 }
269 spin_unlock(sch->lock);
270 CHSC_MSG(2, "chsc on 0.%x.%04x returned cc=%d\n",
271 sch->schid.ssid, sch->schid.sch_no, cc);
272 if (ret == -EINPROGRESS)
273 return -EINPROGRESS;
274 put_device(&sch->dev);
275 if (ret == 0)
276 return 0;
277 }
278 return ret;
279}
280
281static void chsc_log_command(struct chsc_async_area *chsc_area)
282{
283 char dbf[10];
284
285 sprintf(dbf, "CHSC:%x", chsc_area->header.code);
286 CHSC_LOG(0, dbf);
287 CHSC_LOG_HEX(0, chsc_area, 32);
288}
289
290static int chsc_examine_irb(struct chsc_request *request)
291{
292 int backed_up;
293
294 if (!(scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND))
295 return -EIO;
296 backed_up = scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHAIN_CHECK;
297 request->irb.scsw.cmd.cstat &= ~SCHN_STAT_CHAIN_CHECK;
298 if (scsw_cstat(&request->irb.scsw) == 0)
299 return 0;
300 if (!backed_up)
301 return 0;
302 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_PROG_CHECK)
303 return -EIO;
304 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_PROT_CHECK)
305 return -EPERM;
306 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHN_DATA_CHK)
307 return -EAGAIN;
308 if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHN_CTRL_CHK)
309 return -EAGAIN;
310 return -EIO;
311}
312
313static int chsc_ioctl_start(void __user *user_area)
314{
315 struct chsc_request *request;
316 struct chsc_async_area *chsc_area;
317 int ret;
318 char dbf[10];
319
320 if (!css_general_characteristics.dynio)
321
322 return -EOPNOTSUPP;
323 chsc_area = (void *)get_zeroed_page(GFP_DMA | GFP_KERNEL);
324 if (!chsc_area)
325 return -ENOMEM;
326 request = kzalloc(sizeof(*request), GFP_KERNEL);
327 if (!request) {
328 ret = -ENOMEM;
329 goto out_free;
330 }
331 init_completion(&request->completion);
332 if (copy_from_user(chsc_area, user_area, PAGE_SIZE)) {
333 ret = -EFAULT;
334 goto out_free;
335 }
336 chsc_log_command(chsc_area);
337 spin_lock_irq(&chsc_lock);
338 ret = chsc_async(chsc_area, request);
339 spin_unlock_irq(&chsc_lock);
340 if (ret == -EINPROGRESS) {
341 wait_for_completion(&request->completion);
342 ret = chsc_examine_irb(request);
343 }
344
345 if (!ret)
346 if (copy_to_user(user_area, chsc_area, PAGE_SIZE))
347 ret = -EFAULT;
348out_free:
349 sprintf(dbf, "ret:%d", ret);
350 CHSC_LOG(0, dbf);
351 kfree(request);
352 free_page((unsigned long)chsc_area);
353 return ret;
354}
355
356static int chsc_ioctl_info_channel_path(void __user *user_cd)
357{
358 struct chsc_chp_cd *cd;
359 int ret, ccode;
360 struct {
361 struct chsc_header request;
362 u32 : 2;
363 u32 m : 1;
364 u32 : 1;
365 u32 fmt1 : 4;
366 u32 cssid : 8;
367 u32 : 8;
368 u32 first_chpid : 8;
369 u32 : 24;
370 u32 last_chpid : 8;
371 u32 : 32;
372 struct chsc_header response;
373 u8 data[PAGE_SIZE - 20];
374 } __attribute__ ((packed)) *scpcd_area;
375
376 scpcd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
377 if (!scpcd_area)
378 return -ENOMEM;
379 cd = kzalloc(sizeof(*cd), GFP_KERNEL);
380 if (!cd) {
381 ret = -ENOMEM;
382 goto out_free;
383 }
384 if (copy_from_user(cd, user_cd, sizeof(*cd))) {
385 ret = -EFAULT;
386 goto out_free;
387 }
388 scpcd_area->request.length = 0x0010;
389 scpcd_area->request.code = 0x0028;
390 scpcd_area->m = cd->m;
391 scpcd_area->fmt1 = cd->fmt;
392 scpcd_area->cssid = cd->chpid.cssid;
393 scpcd_area->first_chpid = cd->chpid.id;
394 scpcd_area->last_chpid = cd->chpid.id;
395
396 ccode = chsc(scpcd_area);
397 if (ccode != 0) {
398 ret = -EIO;
399 goto out_free;
400 }
401 if (scpcd_area->response.code != 0x0001) {
402 ret = -EIO;
403 CHSC_MSG(0, "scpcd: response code=%x\n",
404 scpcd_area->response.code);
405 goto out_free;
406 }
407 memcpy(&cd->cpcb, &scpcd_area->response, scpcd_area->response.length);
408 if (copy_to_user(user_cd, cd, sizeof(*cd)))
409 ret = -EFAULT;
410 else
411 ret = 0;
412out_free:
413 kfree(cd);
414 free_page((unsigned long)scpcd_area);
415 return ret;
416}
417
418static int chsc_ioctl_info_cu(void __user *user_cd)
419{
420 struct chsc_cu_cd *cd;
421 int ret, ccode;
422 struct {
423 struct chsc_header request;
424 u32 : 2;
425 u32 m : 1;
426 u32 : 1;
427 u32 fmt1 : 4;
428 u32 cssid : 8;
429 u32 : 8;
430 u32 first_cun : 8;
431 u32 : 24;
432 u32 last_cun : 8;
433 u32 : 32;
434 struct chsc_header response;
435 u8 data[PAGE_SIZE - 20];
436 } __attribute__ ((packed)) *scucd_area;
437
438 scucd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
439 if (!scucd_area)
440 return -ENOMEM;
441 cd = kzalloc(sizeof(*cd), GFP_KERNEL);
442 if (!cd) {
443 ret = -ENOMEM;
444 goto out_free;
445 }
446 if (copy_from_user(cd, user_cd, sizeof(*cd))) {
447 ret = -EFAULT;
448 goto out_free;
449 }
450 scucd_area->request.length = 0x0010;
451 scucd_area->request.code = 0x0028;
452 scucd_area->m = cd->m;
453 scucd_area->fmt1 = cd->fmt;
454 scucd_area->cssid = cd->cssid;
455 scucd_area->first_cun = cd->cun;
456 scucd_area->last_cun = cd->cun;
457
458 ccode = chsc(scucd_area);
459 if (ccode != 0) {
460 ret = -EIO;
461 goto out_free;
462 }
463 if (scucd_area->response.code != 0x0001) {
464 ret = -EIO;
465 CHSC_MSG(0, "scucd: response code=%x\n",
466 scucd_area->response.code);
467 goto out_free;
468 }
469 memcpy(&cd->cucb, &scucd_area->response, scucd_area->response.length);
470 if (copy_to_user(user_cd, cd, sizeof(*cd)))
471 ret = -EFAULT;
472 else
473 ret = 0;
474out_free:
475 kfree(cd);
476 free_page((unsigned long)scucd_area);
477 return ret;
478}
479
480static int chsc_ioctl_info_sch_cu(void __user *user_cud)
481{
482 struct chsc_sch_cud *cud;
483 int ret, ccode;
484 struct {
485 struct chsc_header request;
486 u32 : 2;
487 u32 m : 1;
488 u32 : 5;
489 u32 fmt1 : 4;
490 u32 : 2;
491 u32 ssid : 2;
492 u32 first_sch : 16;
493 u32 : 8;
494 u32 cssid : 8;
495 u32 last_sch : 16;
496 u32 : 32;
497 struct chsc_header response;
498 u8 data[PAGE_SIZE - 20];
499 } __attribute__ ((packed)) *sscud_area;
500
501 sscud_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
502 if (!sscud_area)
503 return -ENOMEM;
504 cud = kzalloc(sizeof(*cud), GFP_KERNEL);
505 if (!cud) {
506 ret = -ENOMEM;
507 goto out_free;
508 }
509 if (copy_from_user(cud, user_cud, sizeof(*cud))) {
510 ret = -EFAULT;
511 goto out_free;
512 }
513 sscud_area->request.length = 0x0010;
514 sscud_area->request.code = 0x0006;
515 sscud_area->m = cud->schid.m;
516 sscud_area->fmt1 = cud->fmt;
517 sscud_area->ssid = cud->schid.ssid;
518 sscud_area->first_sch = cud->schid.sch_no;
519 sscud_area->cssid = cud->schid.cssid;
520 sscud_area->last_sch = cud->schid.sch_no;
521
522 ccode = chsc(sscud_area);
523 if (ccode != 0) {
524 ret = -EIO;
525 goto out_free;
526 }
527 if (sscud_area->response.code != 0x0001) {
528 ret = -EIO;
529 CHSC_MSG(0, "sscud: response code=%x\n",
530 sscud_area->response.code);
531 goto out_free;
532 }
533 memcpy(&cud->scub, &sscud_area->response, sscud_area->response.length);
534 if (copy_to_user(user_cud, cud, sizeof(*cud)))
535 ret = -EFAULT;
536 else
537 ret = 0;
538out_free:
539 kfree(cud);
540 free_page((unsigned long)sscud_area);
541 return ret;
542}
543
544static int chsc_ioctl_conf_info(void __user *user_ci)
545{
546 struct chsc_conf_info *ci;
547 int ret, ccode;
548 struct {
549 struct chsc_header request;
550 u32 : 2;
551 u32 m : 1;
552 u32 : 1;
553 u32 fmt1 : 4;
554 u32 cssid : 8;
555 u32 : 6;
556 u32 ssid : 2;
557 u32 : 8;
558 u64 : 64;
559 struct chsc_header response;
560 u8 data[PAGE_SIZE - 20];
561 } __attribute__ ((packed)) *sci_area;
562
563 sci_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
564 if (!sci_area)
565 return -ENOMEM;
566 ci = kzalloc(sizeof(*ci), GFP_KERNEL);
567 if (!ci) {
568 ret = -ENOMEM;
569 goto out_free;
570 }
571 if (copy_from_user(ci, user_ci, sizeof(*ci))) {
572 ret = -EFAULT;
573 goto out_free;
574 }
575 sci_area->request.length = 0x0010;
576 sci_area->request.code = 0x0012;
577 sci_area->m = ci->id.m;
578 sci_area->fmt1 = ci->fmt;
579 sci_area->cssid = ci->id.cssid;
580 sci_area->ssid = ci->id.ssid;
581
582 ccode = chsc(sci_area);
583 if (ccode != 0) {
584 ret = -EIO;
585 goto out_free;
586 }
587 if (sci_area->response.code != 0x0001) {
588 ret = -EIO;
589 CHSC_MSG(0, "sci: response code=%x\n",
590 sci_area->response.code);
591 goto out_free;
592 }
593 memcpy(&ci->scid, &sci_area->response, sci_area->response.length);
594 if (copy_to_user(user_ci, ci, sizeof(*ci)))
595 ret = -EFAULT;
596 else
597 ret = 0;
598out_free:
599 kfree(ci);
600 free_page((unsigned long)sci_area);
601 return ret;
602}
603
604static int chsc_ioctl_conf_comp_list(void __user *user_ccl)
605{
606 struct chsc_comp_list *ccl;
607 int ret, ccode;
608 struct {
609 struct chsc_header request;
610 u32 ctype : 8;
611 u32 : 4;
612 u32 fmt : 4;
613 u32 : 16;
614 u64 : 64;
615 u32 list_parm[2];
616 u64 : 64;
617 struct chsc_header response;
618 u8 data[PAGE_SIZE - 36];
619 } __attribute__ ((packed)) *sccl_area;
620 struct {
621 u32 m : 1;
622 u32 : 31;
623 u32 cssid : 8;
624 u32 : 16;
625 u32 chpid : 8;
626 } __attribute__ ((packed)) *chpid_parm;
627 struct {
628 u32 f_cssid : 8;
629 u32 l_cssid : 8;
630 u32 : 16;
631 u32 res;
632 } __attribute__ ((packed)) *cssids_parm;
633
634 sccl_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
635 if (!sccl_area)
636 return -ENOMEM;
637 ccl = kzalloc(sizeof(*ccl), GFP_KERNEL);
638 if (!ccl) {
639 ret = -ENOMEM;
640 goto out_free;
641 }
642 if (copy_from_user(ccl, user_ccl, sizeof(*ccl))) {
643 ret = -EFAULT;
644 goto out_free;
645 }
646 sccl_area->request.length = 0x0020;
647 sccl_area->request.code = 0x0030;
648 sccl_area->fmt = ccl->req.fmt;
649 sccl_area->ctype = ccl->req.ctype;
650 switch (sccl_area->ctype) {
651 case CCL_CU_ON_CHP:
652 case CCL_IOP_CHP:
653 chpid_parm = (void *)&sccl_area->list_parm;
654 chpid_parm->m = ccl->req.chpid.m;
655 chpid_parm->cssid = ccl->req.chpid.chp.cssid;
656 chpid_parm->chpid = ccl->req.chpid.chp.id;
657 break;
658 case CCL_CSS_IMG:
659 case CCL_CSS_IMG_CONF_CHAR:
660 cssids_parm = (void *)&sccl_area->list_parm;
661 cssids_parm->f_cssid = ccl->req.cssids.f_cssid;
662 cssids_parm->l_cssid = ccl->req.cssids.l_cssid;
663 break;
664 }
665 ccode = chsc(sccl_area);
666 if (ccode != 0) {
667 ret = -EIO;
668 goto out_free;
669 }
670 if (sccl_area->response.code != 0x0001) {
671 ret = -EIO;
672 CHSC_MSG(0, "sccl: response code=%x\n",
673 sccl_area->response.code);
674 goto out_free;
675 }
676 memcpy(&ccl->sccl, &sccl_area->response, sccl_area->response.length);
677 if (copy_to_user(user_ccl, ccl, sizeof(*ccl)))
678 ret = -EFAULT;
679 else
680 ret = 0;
681out_free:
682 kfree(ccl);
683 free_page((unsigned long)sccl_area);
684 return ret;
685}
686
687static int chsc_ioctl_chpd(void __user *user_chpd)
688{
689 struct chsc_cpd_info *chpd;
690 int ret;
691
692 chpd = kzalloc(sizeof(*chpd), GFP_KERNEL);
693 if (!chpd)
694 return -ENOMEM;
695 if (copy_from_user(chpd, user_chpd, sizeof(*chpd))) {
696 ret = -EFAULT;
697 goto out_free;
698 }
699 ret = chsc_determine_channel_path_desc(chpd->chpid, chpd->fmt,
700 chpd->rfmt, chpd->c, chpd->m,
701 &chpd->chpdb);
702 if (ret)
703 goto out_free;
704 if (copy_to_user(user_chpd, chpd, sizeof(*chpd)))
705 ret = -EFAULT;
706out_free:
707 kfree(chpd);
708 return ret;
709}
710
711static int chsc_ioctl_dcal(void __user *user_dcal)
712{
713 struct chsc_dcal *dcal;
714 int ret, ccode;
715 struct {
716 struct chsc_header request;
717 u32 atype : 8;
718 u32 : 4;
719 u32 fmt : 4;
720 u32 : 16;
721 u32 res0[2];
722 u32 list_parm[2];
723 u32 res1[2];
724 struct chsc_header response;
725 u8 data[PAGE_SIZE - 36];
726 } __attribute__ ((packed)) *sdcal_area;
727
728 sdcal_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
729 if (!sdcal_area)
730 return -ENOMEM;
731 dcal = kzalloc(sizeof(*dcal), GFP_KERNEL);
732 if (!dcal) {
733 ret = -ENOMEM;
734 goto out_free;
735 }
736 if (copy_from_user(dcal, user_dcal, sizeof(*dcal))) {
737 ret = -EFAULT;
738 goto out_free;
739 }
740 sdcal_area->request.length = 0x0020;
741 sdcal_area->request.code = 0x0034;
742 sdcal_area->atype = dcal->req.atype;
743 sdcal_area->fmt = dcal->req.fmt;
744 memcpy(&sdcal_area->list_parm, &dcal->req.list_parm,
745 sizeof(sdcal_area->list_parm));
746
747 ccode = chsc(sdcal_area);
748 if (ccode != 0) {
749 ret = -EIO;
750 goto out_free;
751 }
752 if (sdcal_area->response.code != 0x0001) {
753 ret = -EIO;
754 CHSC_MSG(0, "sdcal: response code=%x\n",
755 sdcal_area->response.code);
756 goto out_free;
757 }
758 memcpy(&dcal->sdcal, &sdcal_area->response,
759 sdcal_area->response.length);
760 if (copy_to_user(user_dcal, dcal, sizeof(*dcal)))
761 ret = -EFAULT;
762 else
763 ret = 0;
764out_free:
765 kfree(dcal);
766 free_page((unsigned long)sdcal_area);
767 return ret;
768}
769
770static long chsc_ioctl(struct file *filp, unsigned int cmd,
771 unsigned long arg)
772{
773 CHSC_MSG(2, "chsc_ioctl called, cmd=%x\n", cmd);
774 switch (cmd) {
775 case CHSC_START:
776 return chsc_ioctl_start((void __user *)arg);
777 case CHSC_INFO_CHANNEL_PATH:
778 return chsc_ioctl_info_channel_path((void __user *)arg);
779 case CHSC_INFO_CU:
780 return chsc_ioctl_info_cu((void __user *)arg);
781 case CHSC_INFO_SCH_CU:
782 return chsc_ioctl_info_sch_cu((void __user *)arg);
783 case CHSC_INFO_CI:
784 return chsc_ioctl_conf_info((void __user *)arg);
785 case CHSC_INFO_CCL:
786 return chsc_ioctl_conf_comp_list((void __user *)arg);
787 case CHSC_INFO_CPD:
788 return chsc_ioctl_chpd((void __user *)arg);
789 case CHSC_INFO_DCAL:
790 return chsc_ioctl_dcal((void __user *)arg);
791 default:
792 return -ENOIOCTLCMD;
793 }
794}
795
796static const struct file_operations chsc_fops = {
797 .owner = THIS_MODULE,
798 .unlocked_ioctl = chsc_ioctl,
799 .compat_ioctl = chsc_ioctl,
800};
801
802static struct miscdevice chsc_misc_device = {
803 .minor = MISC_DYNAMIC_MINOR,
804 .name = "chsc",
805 .fops = &chsc_fops,
806};
807
808static int __init chsc_misc_init(void)
809{
810 return misc_register(&chsc_misc_device);
811}
812
813static void chsc_misc_cleanup(void)
814{
815 misc_deregister(&chsc_misc_device);
816}
817
818static int __init chsc_sch_init(void)
819{
820 int ret;
821
822 ret = chsc_init_dbfs();
823 if (ret)
824 return ret;
825 isc_register(CHSC_SCH_ISC);
826 ret = chsc_init_sch_driver();
827 if (ret)
828 goto out_dbf;
829 ret = chsc_misc_init();
830 if (ret)
831 goto out_driver;
832 return ret;
833out_driver:
834 chsc_cleanup_sch_driver();
835out_dbf:
836 isc_unregister(CHSC_SCH_ISC);
837 chsc_remove_dbfs();
838 return ret;
839}
840
841static void __exit chsc_sch_exit(void)
842{
843 chsc_misc_cleanup();
844 chsc_cleanup_sch_driver();
845 isc_unregister(CHSC_SCH_ISC);
846 chsc_remove_dbfs();
847}
848
849module_init(chsc_sch_init);
850module_exit(chsc_sch_exit);
851
