drivers/parport/procfs.c - kernel/msm - Gitiles

 /* Sysctl interface for parport devices.
  *
  * Authors: David Campbell <campbell@torque.net>
  *          Tim Waugh <tim@cyberelk.demon.co.uk>
  *          Philip Blundell <philb@gnu.org>
  *          Andrea Arcangeli
  *          Riccardo Facchetti <fizban@tin.it>
  *
  * based on work by Grant Guenther <grant@torque.net>
  *              and Philip Blundell
  *
  * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
  */

 #include <linux/string.h>
 #include <linux/config.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/parport.h>
 #include <linux/ctype.h>
 #include <linux/sysctl.h>

 #include <asm/uaccess.h>

 #if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)

 #define PARPORT_MIN_TIMESLICE_VALUE 1ul
 #define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
 #define PARPORT_MIN_SPINTIME_VALUE 1
 #define PARPORT_MAX_SPINTIME_VALUE 1000

 static int do_active_device(ctl_table *table, int write, struct file *filp,
 		      void __user *result, size_t *lenp, loff_t *ppos)
 {
 	struct parport *port = (struct parport *)table->extra1;
 	char buffer[256];
 	struct pardevice *dev;
 	int len = 0;

 	if (write)		/* can't happen anyway */
 		return -EACCES;

 	if (*ppos) {
 		*lenp = 0;
 		return 0;
 	}

 	for (dev = port->devices; dev ; dev = dev->next) {
 		if(dev == port->cad) {
 			len += sprintf(buffer, "%s\n", dev->name);
 		}
 	}

 	if(!len) {
 		len += sprintf(buffer, "%s\n", "none");
 	}

 	if (len > *lenp)
 		len = *lenp;
 	else
 		*lenp = len;

 	*ppos += len;

 	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
 }

 #ifdef CONFIG_PARPORT_1284
 static int do_autoprobe(ctl_table *table, int write, struct file *filp,
 			void __user *result, size_t *lenp, loff_t *ppos)
 {
 	struct parport_device_info *info = table->extra2;
 	const char *str;
 	char buffer[256];
 	int len = 0;

 	if (write) /* permissions stop this */
 		return -EACCES;

 	if (*ppos) {
 		*lenp = 0;
 		return 0;
 	}

 	if ((str = info->class_name) != NULL)
 		len += sprintf (buffer + len, "CLASS:%s;\n", str);

 	if ((str = info->model) != NULL)
 		len += sprintf (buffer + len, "MODEL:%s;\n", str);

 	if ((str = info->mfr) != NULL)
 		len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);

 	if ((str = info->description) != NULL)
 		len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);

 	if ((str = info->cmdset) != NULL)
 		len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);

 	if (len > *lenp)
 		len = *lenp;
 	else
 		*lenp = len;

 	*ppos += len;

 	return copy_to_user (result, buffer, len) ? -EFAULT : 0;
 }
 #endif /* IEEE1284.3 support. */

 static int do_hardware_base_addr (ctl_table *table, int write,
 				  struct file *filp, void __user *result,
 				  size_t *lenp, loff_t *ppos)
 {
 	struct parport *port = (struct parport *)table->extra1;
 	char buffer[20];
 	int len = 0;

 	if (*ppos) {
 		*lenp = 0;
 		return 0;
 	}

 	if (write) /* permissions prevent this anyway */
 		return -EACCES;

 	len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);

 	if (len > *lenp)
 		len = *lenp;
 	else
 		*lenp = len;

 	*ppos += len;

 	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
 }

 static int do_hardware_irq (ctl_table *table, int write,
 			    struct file *filp, void __user *result,
 			    size_t *lenp, loff_t *ppos)
 {
 	struct parport *port = (struct parport *)table->extra1;
 	char buffer[20];
 	int len = 0;

 	if (*ppos) {
 		*lenp = 0;
 		return 0;
 	}

 	if (write) /* permissions prevent this anyway */
 		return -EACCES;

 	len += sprintf (buffer, "%d\n", port->irq);

 	if (len > *lenp)
 		len = *lenp;
 	else
 		*lenp = len;

 	*ppos += len;

 	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
 }

 static int do_hardware_dma (ctl_table *table, int write,
 			    struct file *filp, void __user *result,
 			    size_t *lenp, loff_t *ppos)
 {
 	struct parport *port = (struct parport *)table->extra1;
 	char buffer[20];
 	int len = 0;

 	if (*ppos) {
 		*lenp = 0;
 		return 0;
 	}

 	if (write) /* permissions prevent this anyway */
 		return -EACCES;

 	len += sprintf (buffer, "%d\n", port->dma);

 	if (len > *lenp)
 		len = *lenp;
 	else
 		*lenp = len;

 	*ppos += len;

 	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
 }

 static int do_hardware_modes (ctl_table *table, int write,
 			      struct file *filp, void __user *result,
 			      size_t *lenp, loff_t *ppos)
 {
 	struct parport *port = (struct parport *)table->extra1;
 	char buffer[40];
 	int len = 0;

 	if (*ppos) {
 		*lenp = 0;
 		return 0;
 	}

 	if (write) /* permissions prevent this anyway */
 		return -EACCES;

 	{
 #define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}}
 		int f = 0;
 		printmode(PCSPP);
 		printmode(TRISTATE);
 		printmode(COMPAT);
 		printmode(EPP);
 		printmode(ECP);
 		printmode(DMA);
 #undef printmode
 	}
 	buffer[len++] = '\n';

 	if (len > *lenp)
 		len = *lenp;
 	else
 		*lenp = len;

 	*ppos += len;

 	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
 }

 #define PARPORT_PORT_DIR(child) { 0, NULL, NULL, 0, 0555, child }
 #define PARPORT_PARPORT_DIR(child) { DEV_PARPORT, "parport", \
                                      NULL, 0, 0555, child }
 #define PARPORT_DEV_DIR(child) { CTL_DEV, "dev", NULL, 0, 0555, child }
 #define PARPORT_DEVICES_ROOT_DIR  { DEV_PARPORT_DEVICES, "devices", \
                                     NULL, 0, 0555, NULL }

 static const unsigned long parport_min_timeslice_value =
 PARPORT_MIN_TIMESLICE_VALUE;

 static const unsigned long parport_max_timeslice_value =
 PARPORT_MAX_TIMESLICE_VALUE;

 static const  int parport_min_spintime_value =
 PARPORT_MIN_SPINTIME_VALUE;

 static const int parport_max_spintime_value =
 PARPORT_MAX_SPINTIME_VALUE;


 struct parport_sysctl_table {
 	struct ctl_table_header *sysctl_header;
 	ctl_table vars[12];
 	ctl_table device_dir[2];
 	ctl_table port_dir[2];
 	ctl_table parport_dir[2];
 	ctl_table dev_dir[2];
 };

 static const struct parport_sysctl_table parport_sysctl_template = {
 	NULL,
         {
 		{ DEV_PARPORT_SPINTIME, "spintime",
 		  NULL, sizeof(int), 0644, NULL,
 		  &proc_dointvec_minmax, NULL, NULL,
 		  (void*) &parport_min_spintime_value,
 		  (void*) &parport_max_spintime_value },
 		{ DEV_PARPORT_BASE_ADDR, "base-addr",
 		  NULL, 0, 0444, NULL,
 		  &do_hardware_base_addr },
 		{ DEV_PARPORT_IRQ, "irq",
 		  NULL, 0, 0444, NULL,
 		  &do_hardware_irq },
 		{ DEV_PARPORT_DMA, "dma",
 		  NULL, 0, 0444, NULL,
 		  &do_hardware_dma },
 		{ DEV_PARPORT_MODES, "modes",
 		  NULL, 0, 0444, NULL,
 		  &do_hardware_modes },
 		PARPORT_DEVICES_ROOT_DIR,
 #ifdef CONFIG_PARPORT_1284
 		{ DEV_PARPORT_AUTOPROBE, "autoprobe",
 		  NULL, 0, 0444, NULL,
 		  &do_autoprobe },
 		{ DEV_PARPORT_AUTOPROBE + 1, "autoprobe0",
 		 NULL, 0, 0444, NULL,
 		 &do_autoprobe },
 		{ DEV_PARPORT_AUTOPROBE + 2, "autoprobe1",
 		  NULL, 0, 0444, NULL,
 		  &do_autoprobe },
 		{ DEV_PARPORT_AUTOPROBE + 3, "autoprobe2",
 		  NULL, 0, 0444, NULL,
 		  &do_autoprobe },
 		{ DEV_PARPORT_AUTOPROBE + 4, "autoprobe3",
 		  NULL, 0, 0444, NULL,
 		  &do_autoprobe },
 #endif /* IEEE 1284 support */
 		{0}
 	},
 	{ {DEV_PARPORT_DEVICES_ACTIVE, "active", NULL, 0, 0444, NULL,
 	  &do_active_device }, {0}},
 	{ PARPORT_PORT_DIR(NULL), {0}},
 	{ PARPORT_PARPORT_DIR(NULL), {0}},
 	{ PARPORT_DEV_DIR(NULL), {0}}
 };

 struct parport_device_sysctl_table
 {
 	struct ctl_table_header *sysctl_header;
 	ctl_table vars[2];
 	ctl_table device_dir[2];
 	ctl_table devices_root_dir[2];
 	ctl_table port_dir[2];
 	ctl_table parport_dir[2];
 	ctl_table dev_dir[2];
 };

 static const struct parport_device_sysctl_table
 parport_device_sysctl_template = {
 	NULL,
 	{
 		{ DEV_PARPORT_DEVICE_TIMESLICE, "timeslice",
 		  NULL, sizeof(int), 0644, NULL,
 		  &proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
 		  (void*) &parport_min_timeslice_value,
 		  (void*) &parport_max_timeslice_value },
 	},
 	{ {0, NULL, NULL, 0, 0555, NULL}, {0}},
 	{ PARPORT_DEVICES_ROOT_DIR, {0}},
 	{ PARPORT_PORT_DIR(NULL), {0}},
 	{ PARPORT_PARPORT_DIR(NULL), {0}},
 	{ PARPORT_DEV_DIR(NULL), {0}}
 };

 struct parport_default_sysctl_table
 {
 	struct ctl_table_header *sysctl_header;
 	ctl_table vars[3];
         ctl_table default_dir[2];
 	ctl_table parport_dir[2];
 	ctl_table dev_dir[2];
 };

 extern unsigned long parport_default_timeslice;
 extern int parport_default_spintime;

 static struct parport_default_sysctl_table
 parport_default_sysctl_table = {
 	NULL,
 	{
 		{ DEV_PARPORT_DEFAULT_TIMESLICE, "timeslice",
 		  &parport_default_timeslice,
 		  sizeof(parport_default_timeslice), 0644, NULL,
 		  &proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
 		  (void*) &parport_min_timeslice_value,
 		  (void*) &parport_max_timeslice_value },
 		{ DEV_PARPORT_DEFAULT_SPINTIME, "spintime",
 		  &parport_default_spintime,
 		  sizeof(parport_default_spintime), 0644, NULL,
 		  &proc_dointvec_minmax, NULL, NULL,
 		  (void*) &parport_min_spintime_value,
 		  (void*) &parport_max_spintime_value },
 		{0}
 	},
 	{ { DEV_PARPORT_DEFAULT, "default", NULL, 0, 0555,
 	    parport_default_sysctl_table.vars },{0}},
 	{
 	PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
 	{0}},
 	{ PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir), {0}}
 };


 int parport_proc_register(struct parport *port)
 {
 	struct parport_sysctl_table *t;
 	int i;

 	t = kmalloc(sizeof(*t), GFP_KERNEL);
 	if (t == NULL)
 		return -ENOMEM;
 	memcpy(t, &parport_sysctl_template, sizeof(*t));

 	t->device_dir[0].extra1 = port;

 	for (i = 0; i < 8; i++)
 		t->vars[i].extra1 = port;

 	t->vars[0].data = &port->spintime;
 	t->vars[5].child = t->device_dir;

 	for (i = 0; i < 5; i++)
 		t->vars[6 + i].extra2 = &port->probe_info[i];

 	t->port_dir[0].procname = port->name;
 	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */

 	t->port_dir[0].child = t->vars;
 	t->parport_dir[0].child = t->port_dir;
 	t->dev_dir[0].child = t->parport_dir;

 	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
 	if (t->sysctl_header == NULL) {
 		kfree(t);
 		t = NULL;
 	}
 	port->sysctl_table = t;
 	return 0;
 }

 int parport_proc_unregister(struct parport *port)
 {
 	if (port->sysctl_table) {
 		struct parport_sysctl_table *t = port->sysctl_table;
 		port->sysctl_table = NULL;
 		unregister_sysctl_table(t->sysctl_header);
 		kfree(t);
 	}
 	return 0;
 }

 int parport_device_proc_register(struct pardevice *device)
 {
 	struct parport_device_sysctl_table *t;
 	struct parport * port = device->port;

 	t = kmalloc(sizeof(*t), GFP_KERNEL);
 	if (t == NULL)
 		return -ENOMEM;
 	memcpy(t, &parport_device_sysctl_template, sizeof(*t));

 	t->dev_dir[0].child = t->parport_dir;
 	t->parport_dir[0].child = t->port_dir;
 	t->port_dir[0].procname = port->name;
 	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
 	t->port_dir[0].child = t->devices_root_dir;
 	t->devices_root_dir[0].child = t->device_dir;

 #ifdef CONFIG_PARPORT_1284

 	t->device_dir[0].ctl_name =
 		parport_device_num(port->number, port->muxport,
 				   device->daisy)
 		+ 1;  /* nb 0 isn't legal here */

 #else /* No IEEE 1284 support */

 	/* parport_device_num isn't available. */
 	t->device_dir[0].ctl_name = 1;

 #endif /* IEEE 1284 support or not */

 	t->device_dir[0].procname = device->name;
 	t->device_dir[0].extra1 = device;
 	t->device_dir[0].child = t->vars;
 	t->vars[0].data = &device->timeslice;

 	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
 	if (t->sysctl_header == NULL) {
 		kfree(t);
 		t = NULL;
 	}
 	device->sysctl_table = t;
 	return 0;
 }

 int parport_device_proc_unregister(struct pardevice *device)
 {
 	if (device->sysctl_table) {
 		struct parport_device_sysctl_table *t = device->sysctl_table;
 		device->sysctl_table = NULL;
 		unregister_sysctl_table(t->sysctl_header);
 		kfree(t);
 	}
 	return 0;
 }

 static int __init parport_default_proc_register(void)
 {
 	parport_default_sysctl_table.sysctl_header =
 		register_sysctl_table(parport_default_sysctl_table.dev_dir, 0);
 	return 0;
 }

 static void __exit parport_default_proc_unregister(void)
 {
 	if (parport_default_sysctl_table.sysctl_header) {
 		unregister_sysctl_table(parport_default_sysctl_table.
 					sysctl_header);
 		parport_default_sysctl_table.sysctl_header = NULL;
 	}
 }

 #else /* no sysctl or no procfs*/

 int parport_proc_register(struct parport *pp)
 {
 	return 0;
 }

 int parport_proc_unregister(struct parport *pp)
 {
 	return 0;
 }

 int parport_device_proc_register(struct pardevice *device)
 {
 	return 0;
 }

 int parport_device_proc_unregister(struct pardevice *device)
 {
 	return 0;
 }

 static int __init parport_default_proc_register (void)
 {
 	return 0;
 }

 static void __exit parport_default_proc_unregister (void)
 {
 }
 #endif

 module_init(parport_default_proc_register)
 module_exit(parport_default_proc_unregister)
	/* Sysctl interface for parport devices.
	*
	* Authors: David Campbell <campbell@torque.net>
	* Tim Waugh <tim@cyberelk.demon.co.uk>
	* Philip Blundell <philb@gnu.org>
	* Andrea Arcangeli
	* Riccardo Facchetti <fizban@tin.it>
	*
	* based on work by Grant Guenther <grant@torque.net>
	* and Philip Blundell
	*
	* Cleaned up include files - Russell King <linux@arm.uk.linux.org>
	*/

	#include <linux/string.h>
	#include <linux/config.h>
	#include <linux/init.h>
	#include <linux/module.h>
	#include <linux/errno.h>
	#include <linux/kernel.h>
	#include <linux/slab.h>
	#include <linux/parport.h>
	#include <linux/ctype.h>
	#include <linux/sysctl.h>

	#include <asm/uaccess.h>

	#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)

	#define PARPORT_MIN_TIMESLICE_VALUE 1ul
	#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
	#define PARPORT_MIN_SPINTIME_VALUE 1
	#define PARPORT_MAX_SPINTIME_VALUE 1000

	static int do_active_device(ctl_table table, int write, struct file filp,
	void __user result, size_t lenp, loff_t *ppos)
	{
	struct parport port = (struct parport )table->extra1;
	char buffer[256];
	struct pardevice *dev;
	int len = 0;

	if (write) /* can't happen anyway */
	return -EACCES;

	if (*ppos) {
	*lenp = 0;
	return 0;
	}

	for (dev = port->devices; dev ; dev = dev->next) {
	if(dev == port->cad) {
	len += sprintf(buffer, "%s\n", dev->name);
	}
	}

	if(!len) {
	len += sprintf(buffer, "%s\n", "none");
	}

	if (len > *lenp)
	len = *lenp;
	else
	*lenp = len;

	*ppos += len;

	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	}

	#ifdef CONFIG_PARPORT_1284
	static int do_autoprobe(ctl_table table, int write, struct file filp,
	void __user result, size_t lenp, loff_t *ppos)
	{
	struct parport_device_info *info = table->extra2;
	const char *str;
	char buffer[256];
	int len = 0;

	if (write) /* permissions stop this */
	return -EACCES;

	if (*ppos) {
	*lenp = 0;
	return 0;
	}

	if ((str = info->class_name) != NULL)
	len += sprintf (buffer + len, "CLASS:%s;\n", str);

	if ((str = info->model) != NULL)
	len += sprintf (buffer + len, "MODEL:%s;\n", str);

	if ((str = info->mfr) != NULL)
	len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);

	if ((str = info->description) != NULL)
	len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);

	if ((str = info->cmdset) != NULL)
	len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);

	if (len > *lenp)
	len = *lenp;
	else
	*lenp = len;

	*ppos += len;

	return copy_to_user (result, buffer, len) ? -EFAULT : 0;
	}
	#endif /* IEEE1284.3 support. */

	static int do_hardware_base_addr (ctl_table *table, int write,
	struct file filp, void __user result,
	size_t lenp, loff_t ppos)
	{
	struct parport port = (struct parport )table->extra1;
	char buffer[20];
	int len = 0;

	if (*ppos) {
	*lenp = 0;
	return 0;
	}

	if (write) /* permissions prevent this anyway */
	return -EACCES;

	len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);

	if (len > *lenp)
	len = *lenp;
	else
	*lenp = len;

	*ppos += len;

	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	}

	static int do_hardware_irq (ctl_table *table, int write,
	struct file filp, void __user result,
	size_t lenp, loff_t ppos)
	{
	struct parport port = (struct parport )table->extra1;
	char buffer[20];
	int len = 0;

	if (*ppos) {
	*lenp = 0;
	return 0;
	}

	if (write) /* permissions prevent this anyway */
	return -EACCES;

	len += sprintf (buffer, "%d\n", port->irq);

	if (len > *lenp)
	len = *lenp;
	else
	*lenp = len;

	*ppos += len;

	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	}

	static int do_hardware_dma (ctl_table *table, int write,
	struct file filp, void __user result,
	size_t lenp, loff_t ppos)
	{
	struct parport port = (struct parport )table->extra1;
	char buffer[20];
	int len = 0;

	if (*ppos) {
	*lenp = 0;
	return 0;
	}

	if (write) /* permissions prevent this anyway */
	return -EACCES;

	len += sprintf (buffer, "%d\n", port->dma);

	if (len > *lenp)
	len = *lenp;
	else
	*lenp = len;

	*ppos += len;

	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	}

	static int do_hardware_modes (ctl_table *table, int write,
	struct file filp, void __user result,
	size_t lenp, loff_t ppos)
	{
	struct parport port = (struct parport )table->extra1;
	char buffer[40];
	int len = 0;

	if (*ppos) {
	*lenp = 0;
	return 0;
	}

	if (write) /* permissions prevent this anyway */
	return -EACCES;

	{
	#define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}}
	int f = 0;
	printmode(PCSPP);
	printmode(TRISTATE);
	printmode(COMPAT);
	printmode(EPP);
	printmode(ECP);
	printmode(DMA);
	#undef printmode
	}
	buffer[len++] = '\n';

	if (len > *lenp)
	len = *lenp;
	else
	*lenp = len;

	*ppos += len;

	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	}

	#define PARPORT_PORT_DIR(child) { 0, NULL, NULL, 0, 0555, child }
	#define PARPORT_PARPORT_DIR(child) { DEV_PARPORT, "parport", \
	NULL, 0, 0555, child }
	#define PARPORT_DEV_DIR(child) { CTL_DEV, "dev", NULL, 0, 0555, child }
	#define PARPORT_DEVICES_ROOT_DIR { DEV_PARPORT_DEVICES, "devices", \
	NULL, 0, 0555, NULL }

	static const unsigned long parport_min_timeslice_value =
	PARPORT_MIN_TIMESLICE_VALUE;

	static const unsigned long parport_max_timeslice_value =
	PARPORT_MAX_TIMESLICE_VALUE;

	static const int parport_min_spintime_value =
	PARPORT_MIN_SPINTIME_VALUE;

	static const int parport_max_spintime_value =
	PARPORT_MAX_SPINTIME_VALUE;


	struct parport_sysctl_table {
	struct ctl_table_header *sysctl_header;
	ctl_table vars[12];
	ctl_table device_dir[2];
	ctl_table port_dir[2];
	ctl_table parport_dir[2];
	ctl_table dev_dir[2];
	};

	static const struct parport_sysctl_table parport_sysctl_template = {
	NULL,
	{
	{ DEV_PARPORT_SPINTIME, "spintime",
	NULL, sizeof(int), 0644, NULL,
	&proc_dointvec_minmax, NULL, NULL,
	(void*) &parport_min_spintime_value,
	(void*) &parport_max_spintime_value },
	{ DEV_PARPORT_BASE_ADDR, "base-addr",
	NULL, 0, 0444, NULL,
	&do_hardware_base_addr },
	{ DEV_PARPORT_IRQ, "irq",
	NULL, 0, 0444, NULL,
	&do_hardware_irq },
	{ DEV_PARPORT_DMA, "dma",
	NULL, 0, 0444, NULL,
	&do_hardware_dma },
	{ DEV_PARPORT_MODES, "modes",
	NULL, 0, 0444, NULL,
	&do_hardware_modes },
	PARPORT_DEVICES_ROOT_DIR,
	#ifdef CONFIG_PARPORT_1284
	{ DEV_PARPORT_AUTOPROBE, "autoprobe",
	NULL, 0, 0444, NULL,
	&do_autoprobe },
	{ DEV_PARPORT_AUTOPROBE + 1, "autoprobe0",
	NULL, 0, 0444, NULL,
	&do_autoprobe },
	{ DEV_PARPORT_AUTOPROBE + 2, "autoprobe1",
	NULL, 0, 0444, NULL,
	&do_autoprobe },
	{ DEV_PARPORT_AUTOPROBE + 3, "autoprobe2",
	NULL, 0, 0444, NULL,
	&do_autoprobe },
	{ DEV_PARPORT_AUTOPROBE + 4, "autoprobe3",
	NULL, 0, 0444, NULL,
	&do_autoprobe },
	#endif /* IEEE 1284 support */
	{0}
	},
	{ {DEV_PARPORT_DEVICES_ACTIVE, "active", NULL, 0, 0444, NULL,
	&do_active_device }, {0}},
	{ PARPORT_PORT_DIR(NULL), {0}},
	{ PARPORT_PARPORT_DIR(NULL), {0}},
	{ PARPORT_DEV_DIR(NULL), {0}}
	};

	struct parport_device_sysctl_table
	{
	struct ctl_table_header *sysctl_header;
	ctl_table vars[2];
	ctl_table device_dir[2];
	ctl_table devices_root_dir[2];
	ctl_table port_dir[2];
	ctl_table parport_dir[2];
	ctl_table dev_dir[2];
	};

	static const struct parport_device_sysctl_table
	parport_device_sysctl_template = {
	NULL,
	{
	{ DEV_PARPORT_DEVICE_TIMESLICE, "timeslice",
	NULL, sizeof(int), 0644, NULL,
	&proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
	(void*) &parport_min_timeslice_value,
	(void*) &parport_max_timeslice_value },
	},
	{ {0, NULL, NULL, 0, 0555, NULL}, {0}},
	{ PARPORT_DEVICES_ROOT_DIR, {0}},
	{ PARPORT_PORT_DIR(NULL), {0}},
	{ PARPORT_PARPORT_DIR(NULL), {0}},
	{ PARPORT_DEV_DIR(NULL), {0}}
	};

	struct parport_default_sysctl_table
	{
	struct ctl_table_header *sysctl_header;
	ctl_table vars[3];
	ctl_table default_dir[2];
	ctl_table parport_dir[2];
	ctl_table dev_dir[2];
	};

	extern unsigned long parport_default_timeslice;
	extern int parport_default_spintime;

	static struct parport_default_sysctl_table
	parport_default_sysctl_table = {
	NULL,
	{
	{ DEV_PARPORT_DEFAULT_TIMESLICE, "timeslice",
	&parport_default_timeslice,
	sizeof(parport_default_timeslice), 0644, NULL,
	&proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
	(void*) &parport_min_timeslice_value,
	(void*) &parport_max_timeslice_value },
	{ DEV_PARPORT_DEFAULT_SPINTIME, "spintime",
	&parport_default_spintime,
	sizeof(parport_default_spintime), 0644, NULL,
	&proc_dointvec_minmax, NULL, NULL,
	(void*) &parport_min_spintime_value,
	(void*) &parport_max_spintime_value },
	{0}
	},
	{ { DEV_PARPORT_DEFAULT, "default", NULL, 0, 0555,
	parport_default_sysctl_table.vars },{0}},
	{
	PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
	{0}},
	{ PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir), {0}}
	};


	int parport_proc_register(struct parport *port)
	{
	struct parport_sysctl_table *t;
	int i;

	t = kmalloc(sizeof(*t), GFP_KERNEL);
	if (t == NULL)
	return -ENOMEM;
	memcpy(t, &parport_sysctl_template, sizeof(*t));

	t->device_dir[0].extra1 = port;

	for (i = 0; i < 8; i++)
	t->vars[i].extra1 = port;

	t->vars[0].data = &port->spintime;
	t->vars[5].child = t->device_dir;

	for (i = 0; i < 5; i++)
	t->vars[6 + i].extra2 = &port->probe_info[i];

	t->port_dir[0].procname = port->name;
	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */

	t->port_dir[0].child = t->vars;
	t->parport_dir[0].child = t->port_dir;
	t->dev_dir[0].child = t->parport_dir;

	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
	if (t->sysctl_header == NULL) {
	kfree(t);
	t = NULL;
	}
	port->sysctl_table = t;
	return 0;
	}

	int parport_proc_unregister(struct parport *port)
	{
	if (port->sysctl_table) {
	struct parport_sysctl_table *t = port->sysctl_table;
	port->sysctl_table = NULL;
	unregister_sysctl_table(t->sysctl_header);
	kfree(t);
	}
	return 0;
	}

	int parport_device_proc_register(struct pardevice *device)
	{
	struct parport_device_sysctl_table *t;
	struct parport * port = device->port;

	t = kmalloc(sizeof(*t), GFP_KERNEL);
	if (t == NULL)
	return -ENOMEM;
	memcpy(t, &parport_device_sysctl_template, sizeof(*t));

	t->dev_dir[0].child = t->parport_dir;
	t->parport_dir[0].child = t->port_dir;
	t->port_dir[0].procname = port->name;
	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
	t->port_dir[0].child = t->devices_root_dir;
	t->devices_root_dir[0].child = t->device_dir;

	#ifdef CONFIG_PARPORT_1284

	t->device_dir[0].ctl_name =
	parport_device_num(port->number, port->muxport,
	device->daisy)
	+ 1; /* nb 0 isn't legal here */

	#else /* No IEEE 1284 support */

	/* parport_device_num isn't available. */
	t->device_dir[0].ctl_name = 1;

	#endif /* IEEE 1284 support or not */

	t->device_dir[0].procname = device->name;
	t->device_dir[0].extra1 = device;
	t->device_dir[0].child = t->vars;
	t->vars[0].data = &device->timeslice;

	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
	if (t->sysctl_header == NULL) {
	kfree(t);
	t = NULL;
	}
	device->sysctl_table = t;
	return 0;
	}

	int parport_device_proc_unregister(struct pardevice *device)
	{
	if (device->sysctl_table) {
	struct parport_device_sysctl_table *t = device->sysctl_table;
	device->sysctl_table = NULL;
	unregister_sysctl_table(t->sysctl_header);
	kfree(t);
	}
	return 0;
	}

	static int __init parport_default_proc_register(void)
	{
	parport_default_sysctl_table.sysctl_header =
	register_sysctl_table(parport_default_sysctl_table.dev_dir, 0);
	return 0;
	}

	static void __exit parport_default_proc_unregister(void)
	{
	if (parport_default_sysctl_table.sysctl_header) {
	unregister_sysctl_table(parport_default_sysctl_table.
	sysctl_header);
	parport_default_sysctl_table.sysctl_header = NULL;
	}
	}

	#else /* no sysctl or no procfs*/

	int parport_proc_register(struct parport *pp)
	{
	return 0;
	}

	int parport_proc_unregister(struct parport *pp)
	{
	return 0;
	}

	int parport_device_proc_register(struct pardevice *device)
	{
	return 0;
	}

	int parport_device_proc_unregister(struct pardevice *device)
	{
	return 0;
	}

	static int __init parport_default_proc_register (void)
	{
	return 0;
	}

	static void __exit parport_default_proc_unregister (void)
	{
	}
	#endif

	module_init(parport_default_proc_register)
	module_exit(parport_default_proc_unregister)