1 /* Sysctl interface for parport devices.
3 * Authors: David Campbell
4 * Tim Waugh <tim@cyberelk.demon.co.uk>
5 * Philip Blundell <philb@gnu.org>
7 * Riccardo Facchetti <fizban@tin.it>
9 * based on work by Grant Guenther <grant@torque.net>
12 * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
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>
25 #include <asm/uaccess.h>
27 #if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
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
34 static int do_active_device(ctl_table *table, int write, struct file *filp,
35 void __user *result, size_t *lenp, loff_t *ppos)
37 struct parport *port = (struct parport *)table->extra1;
39 struct pardevice *dev;
42 if (write) /* can't happen anyway */
50 for (dev = port->devices; dev ; dev = dev->next) {
51 if(dev == port->cad) {
52 len += sprintf(buffer, "%s\n", dev->name);
57 len += sprintf(buffer, "%s\n", "none");
67 return copy_to_user(result, buffer, len) ? -EFAULT : 0;
70 #ifdef CONFIG_PARPORT_1284
71 static int do_autoprobe(ctl_table *table, int write, struct file *filp,
72 void __user *result, size_t *lenp, loff_t *ppos)
74 struct parport_device_info *info = table->extra2;
79 if (write) /* permissions stop this */
87 if ((str = info->class_name) != NULL)
88 len += sprintf (buffer + len, "CLASS:%s;\n", str);
90 if ((str = info->model) != NULL)
91 len += sprintf (buffer + len, "MODEL:%s;\n", str);
93 if ((str = info->mfr) != NULL)
94 len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);
96 if ((str = info->description) != NULL)
97 len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);
99 if ((str = info->cmdset) != NULL)
100 len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);
109 return copy_to_user (result, buffer, len) ? -EFAULT : 0;
111 #endif /* IEEE1284.3 support. */
113 static int do_hardware_base_addr (ctl_table *table, int write,
114 struct file *filp, void __user *result,
115 size_t *lenp, loff_t *ppos)
117 struct parport *port = (struct parport *)table->extra1;
126 if (write) /* permissions prevent this anyway */
129 len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);
138 return copy_to_user(result, buffer, len) ? -EFAULT : 0;
141 static int do_hardware_irq (ctl_table *table, int write,
142 struct file *filp, void __user *result,
143 size_t *lenp, loff_t *ppos)
145 struct parport *port = (struct parport *)table->extra1;
154 if (write) /* permissions prevent this anyway */
157 len += sprintf (buffer, "%d\n", port->irq);
166 return copy_to_user(result, buffer, len) ? -EFAULT : 0;
169 static int do_hardware_dma (ctl_table *table, int write,
170 struct file *filp, void __user *result,
171 size_t *lenp, loff_t *ppos)
173 struct parport *port = (struct parport *)table->extra1;
182 if (write) /* permissions prevent this anyway */
185 len += sprintf (buffer, "%d\n", port->dma);
194 return copy_to_user(result, buffer, len) ? -EFAULT : 0;
197 static int do_hardware_modes (ctl_table *table, int write,
198 struct file *filp, void __user *result,
199 size_t *lenp, loff_t *ppos)
201 struct parport *port = (struct parport *)table->extra1;
210 if (write) /* permissions prevent this anyway */
214 #define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}}
224 buffer[len++] = '\n';
233 return copy_to_user(result, buffer, len) ? -EFAULT : 0;
236 #define PARPORT_PORT_DIR(child) { 0, NULL, NULL, 0, 0555, child }
237 #define PARPORT_PARPORT_DIR(child) { DEV_PARPORT, "parport", \
238 NULL, 0, 0555, child }
239 #define PARPORT_DEV_DIR(child) { CTL_DEV, "dev", NULL, 0, 0555, child }
240 #define PARPORT_DEVICES_ROOT_DIR { DEV_PARPORT_DEVICES, "devices", \
241 NULL, 0, 0555, NULL }
243 static const unsigned long parport_min_timeslice_value =
244 PARPORT_MIN_TIMESLICE_VALUE;
246 static const unsigned long parport_max_timeslice_value =
247 PARPORT_MAX_TIMESLICE_VALUE;
249 static const int parport_min_spintime_value =
250 PARPORT_MIN_SPINTIME_VALUE;
252 static const int parport_max_spintime_value =
253 PARPORT_MAX_SPINTIME_VALUE;
256 struct parport_sysctl_table {
257 struct ctl_table_header *sysctl_header;
259 ctl_table device_dir[2];
260 ctl_table port_dir[2];
261 ctl_table parport_dir[2];
262 ctl_table dev_dir[2];
265 static const struct parport_sysctl_table parport_sysctl_template = {
268 { DEV_PARPORT_SPINTIME, "spintime",
269 NULL, sizeof(int), 0644, NULL,
270 &proc_dointvec_minmax, NULL, NULL,
271 (void*) &parport_min_spintime_value,
272 (void*) &parport_max_spintime_value },
273 { DEV_PARPORT_BASE_ADDR, "base-addr",
275 &do_hardware_base_addr },
276 { DEV_PARPORT_IRQ, "irq",
279 { DEV_PARPORT_DMA, "dma",
282 { DEV_PARPORT_MODES, "modes",
284 &do_hardware_modes },
285 PARPORT_DEVICES_ROOT_DIR,
286 #ifdef CONFIG_PARPORT_1284
287 { DEV_PARPORT_AUTOPROBE, "autoprobe",
290 { DEV_PARPORT_AUTOPROBE + 1, "autoprobe0",
293 { DEV_PARPORT_AUTOPROBE + 2, "autoprobe1",
296 { DEV_PARPORT_AUTOPROBE + 3, "autoprobe2",
299 { DEV_PARPORT_AUTOPROBE + 4, "autoprobe3",
302 #endif /* IEEE 1284 support */
305 { {DEV_PARPORT_DEVICES_ACTIVE, "active", NULL, 0, 0444, NULL,
306 &do_active_device }, {0}},
307 { PARPORT_PORT_DIR(NULL), {0}},
308 { PARPORT_PARPORT_DIR(NULL), {0}},
309 { PARPORT_DEV_DIR(NULL), {0}}
312 struct parport_device_sysctl_table
314 struct ctl_table_header *sysctl_header;
316 ctl_table device_dir[2];
317 ctl_table devices_root_dir[2];
318 ctl_table port_dir[2];
319 ctl_table parport_dir[2];
320 ctl_table dev_dir[2];
323 static const struct parport_device_sysctl_table
324 parport_device_sysctl_template = {
327 { DEV_PARPORT_DEVICE_TIMESLICE, "timeslice",
328 NULL, sizeof(int), 0644, NULL,
329 &proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
330 (void*) &parport_min_timeslice_value,
331 (void*) &parport_max_timeslice_value },
333 { {0, NULL, NULL, 0, 0555, NULL}, {0}},
334 { PARPORT_DEVICES_ROOT_DIR, {0}},
335 { PARPORT_PORT_DIR(NULL), {0}},
336 { PARPORT_PARPORT_DIR(NULL), {0}},
337 { PARPORT_DEV_DIR(NULL), {0}}
340 struct parport_default_sysctl_table
342 struct ctl_table_header *sysctl_header;
344 ctl_table default_dir[2];
345 ctl_table parport_dir[2];
346 ctl_table dev_dir[2];
349 extern unsigned long parport_default_timeslice;
350 extern int parport_default_spintime;
352 static struct parport_default_sysctl_table
353 parport_default_sysctl_table = {
356 { DEV_PARPORT_DEFAULT_TIMESLICE, "timeslice",
357 &parport_default_timeslice,
358 sizeof(parport_default_timeslice), 0644, NULL,
359 &proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
360 (void*) &parport_min_timeslice_value,
361 (void*) &parport_max_timeslice_value },
362 { DEV_PARPORT_DEFAULT_SPINTIME, "spintime",
363 &parport_default_spintime,
364 sizeof(parport_default_spintime), 0644, NULL,
365 &proc_dointvec_minmax, NULL, NULL,
366 (void*) &parport_min_spintime_value,
367 (void*) &parport_max_spintime_value },
370 { { DEV_PARPORT_DEFAULT, "default", NULL, 0, 0555,
371 parport_default_sysctl_table.vars },{0}},
373 PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
375 { PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir), {0}}
379 int parport_proc_register(struct parport *port)
381 struct parport_sysctl_table *t;
384 t = kmalloc(sizeof(*t), GFP_KERNEL);
387 memcpy(t, &parport_sysctl_template, sizeof(*t));
389 t->device_dir[0].extra1 = port;
391 for (i = 0; i < 8; i++)
392 t->vars[i].extra1 = port;
394 t->vars[0].data = &port->spintime;
395 t->vars[5].child = t->device_dir;
397 for (i = 0; i < 5; i++)
398 t->vars[6 + i].extra2 = &port->probe_info[i];
400 t->port_dir[0].procname = port->name;
401 t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
403 t->port_dir[0].child = t->vars;
404 t->parport_dir[0].child = t->port_dir;
405 t->dev_dir[0].child = t->parport_dir;
407 t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
408 if (t->sysctl_header == NULL) {
412 port->sysctl_table = t;
416 int parport_proc_unregister(struct parport *port)
418 if (port->sysctl_table) {
419 struct parport_sysctl_table *t = port->sysctl_table;
420 port->sysctl_table = NULL;
421 unregister_sysctl_table(t->sysctl_header);
427 int parport_device_proc_register(struct pardevice *device)
429 struct parport_device_sysctl_table *t;
430 struct parport * port = device->port;
432 t = kmalloc(sizeof(*t), GFP_KERNEL);
435 memcpy(t, &parport_device_sysctl_template, sizeof(*t));
437 t->dev_dir[0].child = t->parport_dir;
438 t->parport_dir[0].child = t->port_dir;
439 t->port_dir[0].procname = port->name;
440 t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
441 t->port_dir[0].child = t->devices_root_dir;
442 t->devices_root_dir[0].child = t->device_dir;
444 #ifdef CONFIG_PARPORT_1284
446 t->device_dir[0].ctl_name =
447 parport_device_num(port->number, port->muxport,
449 + 1; /* nb 0 isn't legal here */
451 #else /* No IEEE 1284 support */
453 /* parport_device_num isn't available. */
454 t->device_dir[0].ctl_name = 1;
456 #endif /* IEEE 1284 support or not */
458 t->device_dir[0].procname = device->name;
459 t->device_dir[0].extra1 = device;
460 t->device_dir[0].child = t->vars;
461 t->vars[0].data = &device->timeslice;
463 t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
464 if (t->sysctl_header == NULL) {
468 device->sysctl_table = t;
472 int parport_device_proc_unregister(struct pardevice *device)
474 if (device->sysctl_table) {
475 struct parport_device_sysctl_table *t = device->sysctl_table;
476 device->sysctl_table = NULL;
477 unregister_sysctl_table(t->sysctl_header);
483 static int __init parport_default_proc_register(void)
485 parport_default_sysctl_table.sysctl_header =
486 register_sysctl_table(parport_default_sysctl_table.dev_dir, 0);
490 static void __exit parport_default_proc_unregister(void)
492 if (parport_default_sysctl_table.sysctl_header) {
493 unregister_sysctl_table(parport_default_sysctl_table.
495 parport_default_sysctl_table.sysctl_header = NULL;
499 #else /* no sysctl or no procfs*/
501 int parport_proc_register(struct parport *pp)
506 int parport_proc_unregister(struct parport *pp)
511 int parport_device_proc_register(struct pardevice *device)
516 int parport_device_proc_unregister(struct pardevice *device)
521 static int __init parport_default_proc_register (void)
526 static void __exit parport_default_proc_unregister (void)
531 module_init(parport_default_proc_register)
532 module_exit(parport_default_proc_unregister)