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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
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)
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 = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL);
480 if (t == NULL)
481 return -ENOMEM;
482
483 t->device_dir[0].extra1 = port;
484
485 for (i = 0; i < 5; i++)
486 t->vars[i].extra1 = port;
487
488 t->vars[0].data = &port->spintime;
489 t->vars[5].child = t->device_dir;
490
491 for (i = 0; i < 5; i++)
492 t->vars[6 + i].extra2 = &port->probe_info[i];
493
494 t->port_dir[0].procname = port->name;
495
496 t->port_dir[0].child = t->vars;
497 t->parport_dir[0].child = t->port_dir;
498 t->dev_dir[0].child = t->parport_dir;
499
500 t->sysctl_header = register_sysctl_table(t->dev_dir);
501 if (t->sysctl_header == NULL) {
502 kfree(t);
503 t = NULL;
504 }
505 port->sysctl_table = t;
506 return 0;
507}
508
509int parport_proc_unregister(struct parport *port)
510{
511 if (port->sysctl_table) {
512 struct parport_sysctl_table *t = port->sysctl_table;
513 port->sysctl_table = NULL;
514 unregister_sysctl_table(t->sysctl_header);
515 kfree(t);
516 }
517 return 0;
518}
519
520int parport_device_proc_register(struct pardevice *device)
521{
522 struct parport_device_sysctl_table *t;
523 struct parport * port = device->port;
524
525 t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
526 if (t == NULL)
527 return -ENOMEM;
528
529 t->dev_dir[0].child = t->parport_dir;
530 t->parport_dir[0].child = t->port_dir;
531 t->port_dir[0].procname = port->name;
532 t->port_dir[0].child = t->devices_root_dir;
533 t->devices_root_dir[0].child = t->device_dir;
534
535 t->device_dir[0].procname = device->name;
536 t->device_dir[0].child = t->vars;
537 t->vars[0].data = &device->timeslice;
538
539 t->sysctl_header = register_sysctl_table(t->dev_dir);
540 if (t->sysctl_header == NULL) {
541 kfree(t);
542 t = NULL;
543 }
544 device->sysctl_table = t;
545 return 0;
546}
547
548int parport_device_proc_unregister(struct pardevice *device)
549{
550 if (device->sysctl_table) {
551 struct parport_device_sysctl_table *t = device->sysctl_table;
552 device->sysctl_table = NULL;
553 unregister_sysctl_table(t->sysctl_header);
554 kfree(t);
555 }
556 return 0;
557}
558
559static int __init parport_default_proc_register(void)
560{
561 parport_default_sysctl_table.sysctl_header =
562 register_sysctl_table(parport_default_sysctl_table.dev_dir);
563 return 0;
564}
565
566static void __exit parport_default_proc_unregister(void)
567{
568 if (parport_default_sysctl_table.sysctl_header) {
569 unregister_sysctl_table(parport_default_sysctl_table.
570 sysctl_header);
571 parport_default_sysctl_table.sysctl_header = NULL;
572 }
573}
574
575#else /* no sysctl or no procfs*/
576
577int parport_proc_register(struct parport *pp)
578{
579 return 0;
580}
581
582int parport_proc_unregister(struct parport *pp)
583{
584 return 0;
585}
586
587int parport_device_proc_register(struct pardevice *device)
588{
589 return 0;
590}
591
592int parport_device_proc_unregister(struct pardevice *device)
593{
594 return 0;
595}
596
597static int __init parport_default_proc_register (void)
598{
599 return 0;
600}
601
602static void __exit parport_default_proc_unregister (void)
603{
604}
605#endif
606
607module_init(parport_default_proc_register)
608module_exit(parport_default_proc_unregister)