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1// SPDX-License-Identifier: GPL-2.0
2/* Sysctl interface for parport devices.
3 *
4 * Authors: David Campbell
5 * Tim Waugh <tim@cyberelk.demon.co.uk>
6 * Philip Blundell <philb@gnu.org>
7 * Andrea Arcangeli
8 * Riccardo Facchetti <fizban@tin.it>
9 *
10 * based on work by Grant Guenther <grant@torque.net>
11 * and Philip Blundell
12 *
13 * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
14 */
15
16#include <linux/string.h>
17#include <linux/init.h>
18#include <linux/module.h>
19#include <linux/errno.h>
20#include <linux/kernel.h>
21#include <linux/slab.h>
22#include <linux/parport.h>
23#include <linux/ctype.h>
24#include <linux/sysctl.h>
25#include <linux/device.h>
26
27#include <linux/uaccess.h>
28
29#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
30
31#define PARPORT_MIN_TIMESLICE_VALUE 1ul
32#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
33#define PARPORT_MIN_SPINTIME_VALUE 1
34#define PARPORT_MAX_SPINTIME_VALUE 1000
35
36static int do_active_device(struct ctl_table *table, int write,
37 void *result, size_t *lenp, loff_t *ppos)
38{
39 struct parport *port = (struct parport *)table->extra1;
40 char buffer[256];
41 struct pardevice *dev;
42 int len = 0;
43
44 if (write) /* can't happen anyway */
45 return -EACCES;
46
47 if (*ppos) {
48 *lenp = 0;
49 return 0;
50 }
51
52 for (dev = port->devices; dev ; dev = dev->next) {
53 if(dev == port->cad) {
54 len += sprintf(buffer, "%s\n", dev->name);
55 }
56 }
57
58 if(!len) {
59 len += sprintf(buffer, "%s\n", "none");
60 }
61
62 if (len > *lenp)
63 len = *lenp;
64 else
65 *lenp = len;
66
67 *ppos += len;
68 memcpy(result, buffer, len);
69 return 0;
70}
71
72#ifdef CONFIG_PARPORT_1284
73static int do_autoprobe(struct ctl_table *table, int write,
74 void *result, size_t *lenp, loff_t *ppos)
75{
76 struct parport_device_info *info = table->extra2;
77 const char *str;
78 char buffer[256];
79 int len = 0;
80
81 if (write) /* permissions stop this */
82 return -EACCES;
83
84 if (*ppos) {
85 *lenp = 0;
86 return 0;
87 }
88
89 if ((str = info->class_name) != NULL)
90 len += sprintf (buffer + len, "CLASS:%s;\n", str);
91
92 if ((str = info->model) != NULL)
93 len += sprintf (buffer + len, "MODEL:%s;\n", str);
94
95 if ((str = info->mfr) != NULL)
96 len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);
97
98 if ((str = info->description) != NULL)
99 len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);
100
101 if ((str = info->cmdset) != NULL)
102 len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);
103
104 if (len > *lenp)
105 len = *lenp;
106 else
107 *lenp = len;
108
109 *ppos += len;
110
111 memcpy(result, buffer, len);
112 return 0;
113}
114#endif /* IEEE1284.3 support. */
115
116static int do_hardware_base_addr(struct ctl_table *table, int write,
117 void *result, size_t *lenp, loff_t *ppos)
118{
119 struct parport *port = (struct parport *)table->extra1;
120 char buffer[20];
121 int len = 0;
122
123 if (*ppos) {
124 *lenp = 0;
125 return 0;
126 }
127
128 if (write) /* permissions prevent this anyway */
129 return -EACCES;
130
131 len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);
132
133 if (len > *lenp)
134 len = *lenp;
135 else
136 *lenp = len;
137
138 *ppos += len;
139 memcpy(result, buffer, len);
140 return 0;
141}
142
143static int do_hardware_irq(struct ctl_table *table, int write,
144 void *result, size_t *lenp, loff_t *ppos)
145{
146 struct parport *port = (struct parport *)table->extra1;
147 char buffer[20];
148 int len = 0;
149
150 if (*ppos) {
151 *lenp = 0;
152 return 0;
153 }
154
155 if (write) /* permissions prevent this anyway */
156 return -EACCES;
157
158 len += sprintf (buffer, "%d\n", port->irq);
159
160 if (len > *lenp)
161 len = *lenp;
162 else
163 *lenp = len;
164
165 *ppos += len;
166 memcpy(result, buffer, len);
167 return 0;
168}
169
170static int do_hardware_dma(struct ctl_table *table, int write,
171 void *result, size_t *lenp, loff_t *ppos)
172{
173 struct parport *port = (struct parport *)table->extra1;
174 char buffer[20];
175 int len = 0;
176
177 if (*ppos) {
178 *lenp = 0;
179 return 0;
180 }
181
182 if (write) /* permissions prevent this anyway */
183 return -EACCES;
184
185 len += sprintf (buffer, "%d\n", port->dma);
186
187 if (len > *lenp)
188 len = *lenp;
189 else
190 *lenp = len;
191
192 *ppos += len;
193 memcpy(result, buffer, len);
194 return 0;
195}
196
197static int do_hardware_modes(struct ctl_table *table, int write,
198 void *result, size_t *lenp, loff_t *ppos)
199{
200 struct parport *port = (struct parport *)table->extra1;
201 char buffer[40];
202 int len = 0;
203
204 if (*ppos) {
205 *lenp = 0;
206 return 0;
207 }
208
209 if (write) /* permissions prevent this anyway */
210 return -EACCES;
211
212 {
213#define printmode(x) \
214do { \
215 if (port->modes & PARPORT_MODE_##x) \
216 len += sprintf(buffer + len, "%s%s", f++ ? "," : "", #x); \
217} while (0)
218 int f = 0;
219 printmode(PCSPP);
220 printmode(TRISTATE);
221 printmode(COMPAT);
222 printmode(EPP);
223 printmode(ECP);
224 printmode(DMA);
225#undef printmode
226 }
227 buffer[len++] = '\n';
228
229 if (len > *lenp)
230 len = *lenp;
231 else
232 *lenp = len;
233
234 *ppos += len;
235 memcpy(result, buffer, len);
236 return 0;
237}
238
239#define PARPORT_PORT_DIR(CHILD) { .procname = NULL, .mode = 0555, .child = CHILD }
240#define PARPORT_PARPORT_DIR(CHILD) { .procname = "parport", \
241 .mode = 0555, .child = CHILD }
242#define PARPORT_DEV_DIR(CHILD) { .procname = "dev", .mode = 0555, .child = CHILD }
243#define PARPORT_DEVICES_ROOT_DIR { .procname = "devices", \
244 .mode = 0555, .child = NULL }
245
246static const unsigned long parport_min_timeslice_value =
247PARPORT_MIN_TIMESLICE_VALUE;
248
249static const unsigned long parport_max_timeslice_value =
250PARPORT_MAX_TIMESLICE_VALUE;
251
252static const int parport_min_spintime_value =
253PARPORT_MIN_SPINTIME_VALUE;
254
255static const int parport_max_spintime_value =
256PARPORT_MAX_SPINTIME_VALUE;
257
258
259struct parport_sysctl_table {
260 struct ctl_table_header *sysctl_header;
261 struct ctl_table vars[12];
262 struct ctl_table device_dir[2];
263 struct ctl_table port_dir[2];
264 struct ctl_table parport_dir[2];
265 struct ctl_table dev_dir[2];
266};
267
268static const struct parport_sysctl_table parport_sysctl_template = {
269 .sysctl_header = NULL,
270 {
271 {
272 .procname = "spintime",
273 .data = NULL,
274 .maxlen = sizeof(int),
275 .mode = 0644,
276 .proc_handler = proc_dointvec_minmax,
277 .extra1 = (void*) &parport_min_spintime_value,
278 .extra2 = (void*) &parport_max_spintime_value
279 },
280 {
281 .procname = "base-addr",
282 .data = NULL,
283 .maxlen = 0,
284 .mode = 0444,
285 .proc_handler = do_hardware_base_addr
286 },
287 {
288 .procname = "irq",
289 .data = NULL,
290 .maxlen = 0,
291 .mode = 0444,
292 .proc_handler = do_hardware_irq
293 },
294 {
295 .procname = "dma",
296 .data = NULL,
297 .maxlen = 0,
298 .mode = 0444,
299 .proc_handler = do_hardware_dma
300 },
301 {
302 .procname = "modes",
303 .data = NULL,
304 .maxlen = 0,
305 .mode = 0444,
306 .proc_handler = do_hardware_modes
307 },
308 PARPORT_DEVICES_ROOT_DIR,
309#ifdef CONFIG_PARPORT_1284
310 {
311 .procname = "autoprobe",
312 .data = NULL,
313 .maxlen = 0,
314 .mode = 0444,
315 .proc_handler = do_autoprobe
316 },
317 {
318 .procname = "autoprobe0",
319 .data = NULL,
320 .maxlen = 0,
321 .mode = 0444,
322 .proc_handler = do_autoprobe
323 },
324 {
325 .procname = "autoprobe1",
326 .data = NULL,
327 .maxlen = 0,
328 .mode = 0444,
329 .proc_handler = do_autoprobe
330 },
331 {
332 .procname = "autoprobe2",
333 .data = NULL,
334 .maxlen = 0,
335 .mode = 0444,
336 .proc_handler = do_autoprobe
337 },
338 {
339 .procname = "autoprobe3",
340 .data = NULL,
341 .maxlen = 0,
342 .mode = 0444,
343 .proc_handler = do_autoprobe
344 },
345#endif /* IEEE 1284 support */
346 {}
347 },
348 {
349 {
350 .procname = "active",
351 .data = NULL,
352 .maxlen = 0,
353 .mode = 0444,
354 .proc_handler = do_active_device
355 },
356 {}
357 },
358 {
359 PARPORT_PORT_DIR(NULL),
360 {}
361 },
362 {
363 PARPORT_PARPORT_DIR(NULL),
364 {}
365 },
366 {
367 PARPORT_DEV_DIR(NULL),
368 {}
369 }
370};
371
372struct parport_device_sysctl_table
373{
374 struct ctl_table_header *sysctl_header;
375 struct ctl_table vars[2];
376 struct ctl_table device_dir[2];
377 struct ctl_table devices_root_dir[2];
378 struct ctl_table port_dir[2];
379 struct ctl_table parport_dir[2];
380 struct ctl_table dev_dir[2];
381};
382
383static const struct parport_device_sysctl_table
384parport_device_sysctl_template = {
385 .sysctl_header = NULL,
386 {
387 {
388 .procname = "timeslice",
389 .data = NULL,
390 .maxlen = sizeof(unsigned long),
391 .mode = 0644,
392 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
393 .extra1 = (void*) &parport_min_timeslice_value,
394 .extra2 = (void*) &parport_max_timeslice_value
395 },
396 },
397 {
398 {
399 .procname = NULL,
400 .data = NULL,
401 .maxlen = 0,
402 .mode = 0555,
403 .child = NULL
404 },
405 {}
406 },
407 {
408 PARPORT_DEVICES_ROOT_DIR,
409 {}
410 },
411 {
412 PARPORT_PORT_DIR(NULL),
413 {}
414 },
415 {
416 PARPORT_PARPORT_DIR(NULL),
417 {}
418 },
419 {
420 PARPORT_DEV_DIR(NULL),
421 {}
422 }
423};
424
425struct parport_default_sysctl_table
426{
427 struct ctl_table_header *sysctl_header;
428 struct ctl_table vars[3];
429 struct ctl_table default_dir[2];
430 struct ctl_table parport_dir[2];
431 struct ctl_table dev_dir[2];
432};
433
434static struct parport_default_sysctl_table
435parport_default_sysctl_table = {
436 .sysctl_header = NULL,
437 {
438 {
439 .procname = "timeslice",
440 .data = &parport_default_timeslice,
441 .maxlen = sizeof(parport_default_timeslice),
442 .mode = 0644,
443 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
444 .extra1 = (void*) &parport_min_timeslice_value,
445 .extra2 = (void*) &parport_max_timeslice_value
446 },
447 {
448 .procname = "spintime",
449 .data = &parport_default_spintime,
450 .maxlen = sizeof(parport_default_spintime),
451 .mode = 0644,
452 .proc_handler = proc_dointvec_minmax,
453 .extra1 = (void*) &parport_min_spintime_value,
454 .extra2 = (void*) &parport_max_spintime_value
455 },
456 {}
457 },
458 {
459 {
460 .procname = "default",
461 .mode = 0555,
462 .child = parport_default_sysctl_table.vars
463 },
464 {}
465 },
466 {
467 PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
468 {}
469 },
470 {
471 PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir),
472 {}
473 }
474};
475
476
477int parport_proc_register(struct parport *port)
478{
479 struct parport_sysctl_table *t;
480 int i;
481
482 t = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL);
483 if (t == NULL)
484 return -ENOMEM;
485
486 t->device_dir[0].extra1 = port;
487
488 for (i = 0; i < 5; i++)
489 t->vars[i].extra1 = port;
490
491 t->vars[0].data = &port->spintime;
492 t->vars[5].child = t->device_dir;
493
494 for (i = 0; i < 5; i++)
495 t->vars[6 + i].extra2 = &port->probe_info[i];
496
497 t->port_dir[0].procname = port->name;
498
499 t->port_dir[0].child = t->vars;
500 t->parport_dir[0].child = t->port_dir;
501 t->dev_dir[0].child = t->parport_dir;
502
503 t->sysctl_header = register_sysctl_table(t->dev_dir);
504 if (t->sysctl_header == NULL) {
505 kfree(t);
506 t = NULL;
507 }
508 port->sysctl_table = t;
509 return 0;
510}
511
512int parport_proc_unregister(struct parport *port)
513{
514 if (port->sysctl_table) {
515 struct parport_sysctl_table *t = port->sysctl_table;
516 port->sysctl_table = NULL;
517 unregister_sysctl_table(t->sysctl_header);
518 kfree(t);
519 }
520 return 0;
521}
522
523int parport_device_proc_register(struct pardevice *device)
524{
525 struct parport_device_sysctl_table *t;
526 struct parport * port = device->port;
527
528 t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
529 if (t == NULL)
530 return -ENOMEM;
531
532 t->dev_dir[0].child = t->parport_dir;
533 t->parport_dir[0].child = t->port_dir;
534 t->port_dir[0].procname = port->name;
535 t->port_dir[0].child = t->devices_root_dir;
536 t->devices_root_dir[0].child = t->device_dir;
537
538 t->device_dir[0].procname = device->name;
539 t->device_dir[0].child = t->vars;
540 t->vars[0].data = &device->timeslice;
541
542 t->sysctl_header = register_sysctl_table(t->dev_dir);
543 if (t->sysctl_header == NULL) {
544 kfree(t);
545 t = NULL;
546 }
547 device->sysctl_table = t;
548 return 0;
549}
550
551int parport_device_proc_unregister(struct pardevice *device)
552{
553 if (device->sysctl_table) {
554 struct parport_device_sysctl_table *t = device->sysctl_table;
555 device->sysctl_table = NULL;
556 unregister_sysctl_table(t->sysctl_header);
557 kfree(t);
558 }
559 return 0;
560}
561
562static int __init parport_default_proc_register(void)
563{
564 int ret;
565
566 parport_default_sysctl_table.sysctl_header =
567 register_sysctl_table(parport_default_sysctl_table.dev_dir);
568 if (!parport_default_sysctl_table.sysctl_header)
569 return -ENOMEM;
570 ret = parport_bus_init();
571 if (ret) {
572 unregister_sysctl_table(parport_default_sysctl_table.
573 sysctl_header);
574 return ret;
575 }
576 return 0;
577}
578
579static void __exit parport_default_proc_unregister(void)
580{
581 if (parport_default_sysctl_table.sysctl_header) {
582 unregister_sysctl_table(parport_default_sysctl_table.
583 sysctl_header);
584 parport_default_sysctl_table.sysctl_header = NULL;
585 }
586 parport_bus_exit();
587}
588
589#else /* no sysctl or no procfs*/
590
591int parport_proc_register(struct parport *pp)
592{
593 return 0;
594}
595
596int parport_proc_unregister(struct parport *pp)
597{
598 return 0;
599}
600
601int parport_device_proc_register(struct pardevice *device)
602{
603 return 0;
604}
605
606int parport_device_proc_unregister(struct pardevice *device)
607{
608 return 0;
609}
610
611static int __init parport_default_proc_register (void)
612{
613 return parport_bus_init();
614}
615
616static void __exit parport_default_proc_unregister (void)
617{
618 parport_bus_exit();
619}
620#endif
621
622subsys_initcall(parport_default_proc_register)
623module_exit(parport_default_proc_unregister)
1// SPDX-License-Identifier: GPL-2.0
2/* Sysctl interface for parport devices.
3 *
4 * Authors: David Campbell
5 * Tim Waugh <tim@cyberelk.demon.co.uk>
6 * Philip Blundell <philb@gnu.org>
7 * Andrea Arcangeli
8 * Riccardo Facchetti <fizban@tin.it>
9 *
10 * based on work by Grant Guenther <grant@torque.net>
11 * and Philip Blundell
12 *
13 * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
14 */
15
16#include <linux/string.h>
17#include <linux/init.h>
18#include <linux/module.h>
19#include <linux/errno.h>
20#include <linux/kernel.h>
21#include <linux/slab.h>
22#include <linux/parport.h>
23#include <linux/ctype.h>
24#include <linux/sysctl.h>
25#include <linux/device.h>
26
27#include <linux/uaccess.h>
28
29#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
30
31#define PARPORT_MIN_TIMESLICE_VALUE 1ul
32#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
33#define PARPORT_MIN_SPINTIME_VALUE 1
34#define PARPORT_MAX_SPINTIME_VALUE 1000
35
36static int do_active_device(struct ctl_table *table, int write,
37 void *result, size_t *lenp, loff_t *ppos)
38{
39 struct parport *port = (struct parport *)table->extra1;
40 char buffer[256];
41 struct pardevice *dev;
42 int len = 0;
43
44 if (write) /* can't happen anyway */
45 return -EACCES;
46
47 if (*ppos) {
48 *lenp = 0;
49 return 0;
50 }
51
52 for (dev = port->devices; dev ; dev = dev->next) {
53 if(dev == port->cad) {
54 len += sprintf(buffer, "%s\n", dev->name);
55 }
56 }
57
58 if(!len) {
59 len += sprintf(buffer, "%s\n", "none");
60 }
61
62 if (len > *lenp)
63 len = *lenp;
64 else
65 *lenp = len;
66
67 *ppos += len;
68 memcpy(result, buffer, len);
69 return 0;
70}
71
72#ifdef CONFIG_PARPORT_1284
73static int do_autoprobe(struct ctl_table *table, int write,
74 void *result, size_t *lenp, loff_t *ppos)
75{
76 struct parport_device_info *info = table->extra2;
77 const char *str;
78 char buffer[256];
79 int len = 0;
80
81 if (write) /* permissions stop this */
82 return -EACCES;
83
84 if (*ppos) {
85 *lenp = 0;
86 return 0;
87 }
88
89 if ((str = info->class_name) != NULL)
90 len += sprintf (buffer + len, "CLASS:%s;\n", str);
91
92 if ((str = info->model) != NULL)
93 len += sprintf (buffer + len, "MODEL:%s;\n", str);
94
95 if ((str = info->mfr) != NULL)
96 len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);
97
98 if ((str = info->description) != NULL)
99 len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);
100
101 if ((str = info->cmdset) != NULL)
102 len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);
103
104 if (len > *lenp)
105 len = *lenp;
106 else
107 *lenp = len;
108
109 *ppos += len;
110
111 memcpy(result, buffer, len);
112 return 0;
113}
114#endif /* IEEE1284.3 support. */
115
116static int do_hardware_base_addr(struct ctl_table *table, int write,
117 void *result, size_t *lenp, loff_t *ppos)
118{
119 struct parport *port = (struct parport *)table->extra1;
120 char buffer[20];
121 int len = 0;
122
123 if (*ppos) {
124 *lenp = 0;
125 return 0;
126 }
127
128 if (write) /* permissions prevent this anyway */
129 return -EACCES;
130
131 len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);
132
133 if (len > *lenp)
134 len = *lenp;
135 else
136 *lenp = len;
137
138 *ppos += len;
139 memcpy(result, buffer, len);
140 return 0;
141}
142
143static int do_hardware_irq(struct ctl_table *table, int write,
144 void *result, size_t *lenp, loff_t *ppos)
145{
146 struct parport *port = (struct parport *)table->extra1;
147 char buffer[20];
148 int len = 0;
149
150 if (*ppos) {
151 *lenp = 0;
152 return 0;
153 }
154
155 if (write) /* permissions prevent this anyway */
156 return -EACCES;
157
158 len += sprintf (buffer, "%d\n", port->irq);
159
160 if (len > *lenp)
161 len = *lenp;
162 else
163 *lenp = len;
164
165 *ppos += len;
166 memcpy(result, buffer, len);
167 return 0;
168}
169
170static int do_hardware_dma(struct ctl_table *table, int write,
171 void *result, size_t *lenp, loff_t *ppos)
172{
173 struct parport *port = (struct parport *)table->extra1;
174 char buffer[20];
175 int len = 0;
176
177 if (*ppos) {
178 *lenp = 0;
179 return 0;
180 }
181
182 if (write) /* permissions prevent this anyway */
183 return -EACCES;
184
185 len += sprintf (buffer, "%d\n", port->dma);
186
187 if (len > *lenp)
188 len = *lenp;
189 else
190 *lenp = len;
191
192 *ppos += len;
193 memcpy(result, buffer, len);
194 return 0;
195}
196
197static int do_hardware_modes(struct ctl_table *table, int write,
198 void *result, size_t *lenp, loff_t *ppos)
199{
200 struct parport *port = (struct parport *)table->extra1;
201 char buffer[40];
202 int len = 0;
203
204 if (*ppos) {
205 *lenp = 0;
206 return 0;
207 }
208
209 if (write) /* permissions prevent this anyway */
210 return -EACCES;
211
212 {
213#define printmode(x) \
214do { \
215 if (port->modes & PARPORT_MODE_##x) \
216 len += sprintf(buffer + len, "%s%s", f++ ? "," : "", #x); \
217} while (0)
218 int f = 0;
219 printmode(PCSPP);
220 printmode(TRISTATE);
221 printmode(COMPAT);
222 printmode(EPP);
223 printmode(ECP);
224 printmode(DMA);
225#undef printmode
226 }
227 buffer[len++] = '\n';
228
229 if (len > *lenp)
230 len = *lenp;
231 else
232 *lenp = len;
233
234 *ppos += len;
235 memcpy(result, buffer, len);
236 return 0;
237}
238
239static const unsigned long parport_min_timeslice_value =
240PARPORT_MIN_TIMESLICE_VALUE;
241
242static const unsigned long parport_max_timeslice_value =
243PARPORT_MAX_TIMESLICE_VALUE;
244
245static const int parport_min_spintime_value =
246PARPORT_MIN_SPINTIME_VALUE;
247
248static const int parport_max_spintime_value =
249PARPORT_MAX_SPINTIME_VALUE;
250
251
252struct parport_sysctl_table {
253 struct ctl_table_header *port_header;
254 struct ctl_table_header *devices_header;
255#ifdef CONFIG_PARPORT_1284
256 struct ctl_table vars[10];
257#else
258 struct ctl_table vars[5];
259#endif /* IEEE 1284 support */
260 struct ctl_table device_dir[1];
261};
262
263static const struct parport_sysctl_table parport_sysctl_template = {
264 .port_header = NULL,
265 .devices_header = NULL,
266 {
267 {
268 .procname = "spintime",
269 .data = NULL,
270 .maxlen = sizeof(int),
271 .mode = 0644,
272 .proc_handler = proc_dointvec_minmax,
273 .extra1 = (void*) &parport_min_spintime_value,
274 .extra2 = (void*) &parport_max_spintime_value
275 },
276 {
277 .procname = "base-addr",
278 .data = NULL,
279 .maxlen = 0,
280 .mode = 0444,
281 .proc_handler = do_hardware_base_addr
282 },
283 {
284 .procname = "irq",
285 .data = NULL,
286 .maxlen = 0,
287 .mode = 0444,
288 .proc_handler = do_hardware_irq
289 },
290 {
291 .procname = "dma",
292 .data = NULL,
293 .maxlen = 0,
294 .mode = 0444,
295 .proc_handler = do_hardware_dma
296 },
297 {
298 .procname = "modes",
299 .data = NULL,
300 .maxlen = 0,
301 .mode = 0444,
302 .proc_handler = do_hardware_modes
303 },
304#ifdef CONFIG_PARPORT_1284
305 {
306 .procname = "autoprobe",
307 .data = NULL,
308 .maxlen = 0,
309 .mode = 0444,
310 .proc_handler = do_autoprobe
311 },
312 {
313 .procname = "autoprobe0",
314 .data = NULL,
315 .maxlen = 0,
316 .mode = 0444,
317 .proc_handler = do_autoprobe
318 },
319 {
320 .procname = "autoprobe1",
321 .data = NULL,
322 .maxlen = 0,
323 .mode = 0444,
324 .proc_handler = do_autoprobe
325 },
326 {
327 .procname = "autoprobe2",
328 .data = NULL,
329 .maxlen = 0,
330 .mode = 0444,
331 .proc_handler = do_autoprobe
332 },
333 {
334 .procname = "autoprobe3",
335 .data = NULL,
336 .maxlen = 0,
337 .mode = 0444,
338 .proc_handler = do_autoprobe
339 },
340#endif /* IEEE 1284 support */
341 },
342 {
343 {
344 .procname = "active",
345 .data = NULL,
346 .maxlen = 0,
347 .mode = 0444,
348 .proc_handler = do_active_device
349 },
350 },
351};
352
353struct parport_device_sysctl_table
354{
355 struct ctl_table_header *sysctl_header;
356 struct ctl_table vars[1];
357 struct ctl_table device_dir[1];
358};
359
360static const struct parport_device_sysctl_table
361parport_device_sysctl_template = {
362 .sysctl_header = NULL,
363 {
364 {
365 .procname = "timeslice",
366 .data = NULL,
367 .maxlen = sizeof(unsigned long),
368 .mode = 0644,
369 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
370 .extra1 = (void*) &parport_min_timeslice_value,
371 .extra2 = (void*) &parport_max_timeslice_value
372 },
373 },
374 {
375 {
376 .procname = NULL,
377 .data = NULL,
378 .maxlen = 0,
379 .mode = 0555,
380 },
381 }
382};
383
384struct parport_default_sysctl_table
385{
386 struct ctl_table_header *sysctl_header;
387 struct ctl_table vars[2];
388};
389
390static struct parport_default_sysctl_table
391parport_default_sysctl_table = {
392 .sysctl_header = NULL,
393 {
394 {
395 .procname = "timeslice",
396 .data = &parport_default_timeslice,
397 .maxlen = sizeof(parport_default_timeslice),
398 .mode = 0644,
399 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
400 .extra1 = (void*) &parport_min_timeslice_value,
401 .extra2 = (void*) &parport_max_timeslice_value
402 },
403 {
404 .procname = "spintime",
405 .data = &parport_default_spintime,
406 .maxlen = sizeof(parport_default_spintime),
407 .mode = 0644,
408 .proc_handler = proc_dointvec_minmax,
409 .extra1 = (void*) &parport_min_spintime_value,
410 .extra2 = (void*) &parport_max_spintime_value
411 },
412 }
413};
414
415int parport_proc_register(struct parport *port)
416{
417 struct parport_sysctl_table *t;
418 char *tmp_dir_path;
419 int i, err = 0;
420
421 t = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL);
422 if (t == NULL)
423 return -ENOMEM;
424
425 t->device_dir[0].extra1 = port;
426
427 t->vars[0].data = &port->spintime;
428 for (i = 0; i < 5; i++) {
429 t->vars[i].extra1 = port;
430#ifdef CONFIG_PARPORT_1284
431 t->vars[5 + i].extra2 = &port->probe_info[i];
432#endif /* IEEE 1284 support */
433 }
434
435 tmp_dir_path = kasprintf(GFP_KERNEL, "dev/parport/%s/devices", port->name);
436 if (!tmp_dir_path) {
437 err = -ENOMEM;
438 goto exit_free_t;
439 }
440
441 t->devices_header = register_sysctl(tmp_dir_path, t->device_dir);
442 if (t->devices_header == NULL) {
443 err = -ENOENT;
444 goto exit_free_tmp_dir_path;
445 }
446
447 kfree(tmp_dir_path);
448
449 tmp_dir_path = kasprintf(GFP_KERNEL, "dev/parport/%s", port->name);
450 if (!tmp_dir_path) {
451 err = -ENOMEM;
452 goto unregister_devices_h;
453 }
454
455 t->port_header = register_sysctl(tmp_dir_path, t->vars);
456 if (t->port_header == NULL) {
457 err = -ENOENT;
458 goto unregister_devices_h;
459 }
460
461 port->sysctl_table = t;
462
463 kfree(tmp_dir_path);
464 return 0;
465
466unregister_devices_h:
467 unregister_sysctl_table(t->devices_header);
468
469exit_free_tmp_dir_path:
470 kfree(tmp_dir_path);
471
472exit_free_t:
473 kfree(t);
474 return err;
475}
476
477int parport_proc_unregister(struct parport *port)
478{
479 if (port->sysctl_table) {
480 struct parport_sysctl_table *t = port->sysctl_table;
481 port->sysctl_table = NULL;
482 unregister_sysctl_table(t->devices_header);
483 unregister_sysctl_table(t->port_header);
484 kfree(t);
485 }
486 return 0;
487}
488
489int parport_device_proc_register(struct pardevice *device)
490{
491 struct parport_device_sysctl_table *t;
492 struct parport * port = device->port;
493 char *tmp_dir_path;
494 int err = 0;
495
496 t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
497 if (t == NULL)
498 return -ENOMEM;
499
500 /* Allocate a buffer for two paths: dev/parport/PORT/devices/DEVICE. */
501 tmp_dir_path = kasprintf(GFP_KERNEL, "dev/parport/%s/devices/%s", port->name, device->name);
502 if (!tmp_dir_path) {
503 err = -ENOMEM;
504 goto exit_free_t;
505 }
506
507 t->vars[0].data = &device->timeslice;
508
509 t->sysctl_header = register_sysctl(tmp_dir_path, t->vars);
510 if (t->sysctl_header == NULL) {
511 kfree(t);
512 t = NULL;
513 }
514 device->sysctl_table = t;
515
516 kfree(tmp_dir_path);
517 return 0;
518
519exit_free_t:
520 kfree(t);
521
522 return err;
523}
524
525int parport_device_proc_unregister(struct pardevice *device)
526{
527 if (device->sysctl_table) {
528 struct parport_device_sysctl_table *t = device->sysctl_table;
529 device->sysctl_table = NULL;
530 unregister_sysctl_table(t->sysctl_header);
531 kfree(t);
532 }
533 return 0;
534}
535
536static int __init parport_default_proc_register(void)
537{
538 int ret;
539
540 parport_default_sysctl_table.sysctl_header =
541 register_sysctl("dev/parport/default", parport_default_sysctl_table.vars);
542 if (!parport_default_sysctl_table.sysctl_header)
543 return -ENOMEM;
544 ret = parport_bus_init();
545 if (ret) {
546 unregister_sysctl_table(parport_default_sysctl_table.
547 sysctl_header);
548 return ret;
549 }
550 return 0;
551}
552
553static void __exit parport_default_proc_unregister(void)
554{
555 if (parport_default_sysctl_table.sysctl_header) {
556 unregister_sysctl_table(parport_default_sysctl_table.
557 sysctl_header);
558 parport_default_sysctl_table.sysctl_header = NULL;
559 }
560 parport_bus_exit();
561}
562
563#else /* no sysctl or no procfs*/
564
565int parport_proc_register(struct parport *pp)
566{
567 return 0;
568}
569
570int parport_proc_unregister(struct parport *pp)
571{
572 return 0;
573}
574
575int parport_device_proc_register(struct pardevice *device)
576{
577 return 0;
578}
579
580int parport_device_proc_unregister(struct pardevice *device)
581{
582 return 0;
583}
584
585static int __init parport_default_proc_register (void)
586{
587 return parport_bus_init();
588}
589
590static void __exit parport_default_proc_unregister (void)
591{
592 parport_bus_exit();
593}
594#endif
595
596subsys_initcall(parport_default_proc_register)
597module_exit(parport_default_proc_unregister)