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