[mirror_ubuntu-bionic-kernel.git] / drivers / parport / procfs.c

// SPDX-License-Identifier: GPL-2.0
/* Sysctl interface for parport devices.
 * 
 * Authors: David Campbell
 *          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/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 <linux/device.h>

#include <linux/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(struct ctl_table *table, int write,
		      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(struct ctl_table *table, int write,
			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(struct ctl_table *table, int write,
				 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(struct ctl_table *table, int write,
			   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(struct ctl_table *table, int write,
			   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(struct ctl_table *table, int write,
			     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) { .procname = NULL, .mode = 0555, .child = CHILD }
#define PARPORT_PARPORT_DIR(CHILD) { .procname = "parport", \
                                     .mode = 0555, .child = CHILD }
#define PARPORT_DEV_DIR(CHILD) { .procname = "dev", .mode = 0555, .child = CHILD }
#define PARPORT_DEVICES_ROOT_DIR  {  .procname = "devices", \
                                    .mode = 0555, .child = 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;
	struct ctl_table vars[12];
	struct ctl_table device_dir[2];
	struct ctl_table port_dir[2];
	struct ctl_table parport_dir[2];
	struct ctl_table dev_dir[2];
};

static const struct parport_sysctl_table parport_sysctl_template = {
	.sysctl_header = NULL,
        {
		{
			.procname	= "spintime",
			.data		= NULL,
			.maxlen		= sizeof(int),
			.mode		= 0644,
			.proc_handler	= proc_dointvec_minmax,
			.extra1		= (void*) &parport_min_spintime_value,
			.extra2		= (void*) &parport_max_spintime_value
		},
		{
			.procname	= "base-addr",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_hardware_base_addr
		},
		{
			.procname	= "irq",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_hardware_irq
		},
		{
			.procname	= "dma",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_hardware_dma
		},
		{
			.procname	= "modes",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_hardware_modes
		},
		PARPORT_DEVICES_ROOT_DIR,
#ifdef CONFIG_PARPORT_1284
		{
			.procname	= "autoprobe",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_autoprobe
		},
		{
			.procname	= "autoprobe0",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_autoprobe
		},
		{
			.procname	= "autoprobe1",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_autoprobe
		},
		{
			.procname	= "autoprobe2",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_autoprobe
		},
		{
			.procname	= "autoprobe3",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_autoprobe
		},
#endif /* IEEE 1284 support */
		{}
	},
	{
		{
			.procname	= "active",
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0444,
			.proc_handler	= do_active_device
		},
		{}
	},
	{
		PARPORT_PORT_DIR(NULL),
		{}
	},
	{
		PARPORT_PARPORT_DIR(NULL),
		{}
	},
	{
		PARPORT_DEV_DIR(NULL),
		{}
	}
};

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

static const struct parport_device_sysctl_table
parport_device_sysctl_template = {
	.sysctl_header = NULL,
	{
		{
			.procname 	= "timeslice",
			.data		= NULL,
			.maxlen		= sizeof(unsigned long),
			.mode		= 0644,
			.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
			.extra1		= (void*) &parport_min_timeslice_value,
			.extra2		= (void*) &parport_max_timeslice_value
		},
	},
	{
		{
			.procname	= NULL,
			.data		= NULL,
			.maxlen		= 0,
			.mode		= 0555,
			.child		= NULL
		},
		{}
	},
	{
		PARPORT_DEVICES_ROOT_DIR,
		{}
	},
	{
		PARPORT_PORT_DIR(NULL),
		{}
	},
	{
		PARPORT_PARPORT_DIR(NULL),
		{}
	},
	{
		PARPORT_DEV_DIR(NULL),
		{}
	}
};

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

static struct parport_default_sysctl_table
parport_default_sysctl_table = {
	.sysctl_header	= NULL,
	{
		{
			.procname	= "timeslice",
			.data		= &parport_default_timeslice,
			.maxlen		= sizeof(parport_default_timeslice),
			.mode		= 0644,
			.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
			.extra1		= (void*) &parport_min_timeslice_value,
			.extra2		= (void*) &parport_max_timeslice_value
		},
		{
			.procname	= "spintime",
			.data		= &parport_default_spintime,
			.maxlen		= sizeof(parport_default_spintime),
			.mode		= 0644,
			.proc_handler	= proc_dointvec_minmax,
			.extra1		= (void*) &parport_min_spintime_value,
			.extra2		= (void*) &parport_max_spintime_value
		},
		{}
	},
	{
		{
			.procname	= "default",
			.mode		= 0555,
			.child		= parport_default_sysctl_table.vars
		},
		{}
	},
	{
		PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
		{}
	},
	{
		PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir),
		{}
	}
};


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

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

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

	for (i = 0; i < 5; 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].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);
	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 = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
	if (t == NULL)
		return -ENOMEM;

	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].child = t->devices_root_dir;
	t->devices_root_dir[0].child = t->device_dir;

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

	t->sysctl_header = register_sysctl_table(t->dev_dir);
	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)
{
	int ret;

	parport_default_sysctl_table.sysctl_header =
		register_sysctl_table(parport_default_sysctl_table.dev_dir);
	if (!parport_default_sysctl_table.sysctl_header)
		return -ENOMEM;
	ret = parport_bus_init();
	if (ret) {
		unregister_sysctl_table(parport_default_sysctl_table.
					sysctl_header);
		return ret;
	}
	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;
	}
	parport_bus_exit();
}

#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 parport_bus_init();
}

static void __exit parport_default_proc_unregister (void)
{
	parport_bus_exit();
}
#endif

subsys_initcall(parport_default_proc_register)
module_exit(parport_default_proc_unregister)
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/* Sysctl interface for parport devices.
1da177e4 LT	3	*
bdca3f20	4	* Authors: David Campbell
1da177e4 LT	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>
1da177e4 LT	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>
6fa45a22	25	#include <linux/device.h>
1da177e4	26
7c0f6ba6	27	#include <linux/uaccess.h>
1da177e4 LT	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
be424c63	36	static int do_active_device(struct ctl_table *table, int write,
1da177e4 LT	37	void __user 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
	69	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	70	}
	71
	72	#ifdef CONFIG_PARPORT_1284
be424c63	73	static int do_autoprobe(struct ctl_table *table, int write,
1da177e4 LT	74	void __user 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	return copy_to_user (result, buffer, len) ? -EFAULT : 0;
	112	}
	113	#endif /* IEEE1284.3 support. */
	114
be424c63 JP	115	static int do_hardware_base_addr(struct ctl_table *table, int write,
	116	void __user *result,
	117	size_t lenp, loff_t ppos)
1da177e4 LT	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
	140	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	141	}
	142
be424c63 JP	143	static int do_hardware_irq(struct ctl_table *table, int write,
	144	void __user *result,
	145	size_t lenp, loff_t ppos)
1da177e4 LT	146	{
	147	struct parport port = (struct parport )table->extra1;
	148	char buffer[20];
	149	int len = 0;
	150
	151	if (*ppos) {
	152	*lenp = 0;
	153	return 0;
	154	}
	155
	156	if (write) /* permissions prevent this anyway */
	157	return -EACCES;
	158
	159	len += sprintf (buffer, "%d\n", port->irq);
	160
	161	if (len > *lenp)
	162	len = *lenp;
	163	else
	164	*lenp = len;
	165
	166	*ppos += len;
	167
	168	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	169	}
	170
be424c63 JP	171	static int do_hardware_dma(struct ctl_table *table, int write,
	172	void __user *result,
	173	size_t lenp, loff_t ppos)
1da177e4 LT	174	{
	175	struct parport port = (struct parport )table->extra1;
	176	char buffer[20];
	177	int len = 0;
	178
	179	if (*ppos) {
	180	*lenp = 0;
	181	return 0;
	182	}
	183
	184	if (write) /* permissions prevent this anyway */
	185	return -EACCES;
	186
	187	len += sprintf (buffer, "%d\n", port->dma);
	188
	189	if (len > *lenp)
	190	len = *lenp;
	191	else
	192	*lenp = len;
	193
	194	*ppos += len;
	195
	196	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	197	}
	198
be424c63 JP	199	static int do_hardware_modes(struct ctl_table *table, int write,
	200	void __user *result,
	201	size_t lenp, loff_t ppos)
1da177e4 LT	202	{
	203	struct parport port = (struct parport )table->extra1;
	204	char buffer[40];
	205	int len = 0;
	206
	207	if (*ppos) {
	208	*lenp = 0;
	209	return 0;
	210	}
	211
	212	if (write) /* permissions prevent this anyway */
	213	return -EACCES;
	214
	215	{
	216	#define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}}
	217	int f = 0;
	218	printmode(PCSPP);
	219	printmode(TRISTATE);
	220	printmode(COMPAT);
	221	printmode(EPP);
	222	printmode(ECP);
	223	printmode(DMA);
	224	#undef printmode
	225	}
	226	buffer[len++] = '\n';
	227
	228	if (len > *lenp)
	229	len = *lenp;
	230	else
	231	*lenp = len;
	232
	233	*ppos += len;
	234
	235	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
	236	}
	237
894d2491 EB	238	#define PARPORT_PORT_DIR(CHILD) { .procname = NULL, .mode = 0555, .child = CHILD }
894d2491 EB	239	#define PARPORT_PARPORT_DIR(CHILD) { .procname = "parport", \
2564b7bd	240	.mode = 0555, .child = CHILD }
894d2491	241	#define PARPORT_DEV_DIR(CHILD) { .procname = "dev", .mode = 0555, .child = CHILD }
25398a15	242	#define PARPORT_DEVICES_ROOT_DIR { .procname = "devices", \
2564b7bd	243	.mode = 0555, .child = NULL }
1da177e4 LT	244
	245	static const unsigned long parport_min_timeslice_value =
	246	PARPORT_MIN_TIMESLICE_VALUE;
	247
	248	static const unsigned long parport_max_timeslice_value =
	249	PARPORT_MAX_TIMESLICE_VALUE;
	250
	251	static const int parport_min_spintime_value =
	252	PARPORT_MIN_SPINTIME_VALUE;
	253
	254	static const int parport_max_spintime_value =
	255	PARPORT_MAX_SPINTIME_VALUE;
	256
	257
	258	struct parport_sysctl_table {
	259	struct ctl_table_header *sysctl_header;
be424c63 JP	260	struct ctl_table vars[12];
	261	struct ctl_table device_dir[2];
	262	struct ctl_table port_dir[2];
	263	struct ctl_table parport_dir[2];
	264	struct ctl_table dev_dir[2];
1da177e4 LT	265	};
	266
	267	static const struct parport_sysctl_table parport_sysctl_template = {
2564b7bd	268	.sysctl_header = NULL,
1da177e4	269	{
2564b7bd	270	{
2564b7bd EB	271	.procname = "spintime",
	272	.data = NULL,
	273	.maxlen = sizeof(int),
	274	.mode = 0644,
6d456111	275	.proc_handler = proc_dointvec_minmax,
2564b7bd EB	276	.extra1 = (void*) &parport_min_spintime_value,
	277	.extra2 = (void*) &parport_max_spintime_value
	278	},
	279	{
2564b7bd EB	280	.procname = "base-addr",
	281	.data = NULL,
	282	.maxlen = 0,
	283	.mode = 0444,
6d456111	284	.proc_handler = do_hardware_base_addr
2564b7bd EB	285	},
2564b7bd EB	286	{
2564b7bd EB	287	.procname = "irq",
	288	.data = NULL,
	289	.maxlen = 0,
	290	.mode = 0444,
6d456111	291	.proc_handler = do_hardware_irq
2564b7bd EB	292	},
2564b7bd EB	293	{
2564b7bd EB	294	.procname = "dma",
	295	.data = NULL,
	296	.maxlen = 0,
	297	.mode = 0444,
6d456111	298	.proc_handler = do_hardware_dma
2564b7bd EB	299	},
2564b7bd EB	300	{
2564b7bd EB	301	.procname = "modes",
	302	.data = NULL,
	303	.maxlen = 0,
	304	.mode = 0444,
6d456111	305	.proc_handler = do_hardware_modes
2564b7bd	306	},
1da177e4 LT	307	PARPORT_DEVICES_ROOT_DIR,
1da177e4 LT	308	#ifdef CONFIG_PARPORT_1284
2564b7bd	309	{
2564b7bd EB	310	.procname = "autoprobe",
	311	.data = NULL,
	312	.maxlen = 0,
	313	.mode = 0444,
6d456111	314	.proc_handler = do_autoprobe
2564b7bd EB	315	},
2564b7bd EB	316	{
2564b7bd EB	317	.procname = "autoprobe0",
	318	.data = NULL,
	319	.maxlen = 0,
	320	.mode = 0444,
6d456111	321	.proc_handler = do_autoprobe
2564b7bd EB	322	},
2564b7bd EB	323	{
2564b7bd EB	324	.procname = "autoprobe1",
	325	.data = NULL,
	326	.maxlen = 0,
	327	.mode = 0444,
6d456111	328	.proc_handler = do_autoprobe
2564b7bd EB	329	},
2564b7bd EB	330	{
2564b7bd EB	331	.procname = "autoprobe2",
	332	.data = NULL,
	333	.maxlen = 0,
	334	.mode = 0444,
6d456111	335	.proc_handler = do_autoprobe
2564b7bd EB	336	},
2564b7bd EB	337	{
2564b7bd EB	338	.procname = "autoprobe3",
	339	.data = NULL,
	340	.maxlen = 0,
	341	.mode = 0444,
6d456111	342	.proc_handler = do_autoprobe
2564b7bd	343	},
1da177e4	344	#endif /* IEEE 1284 support */
2564b7bd	345	{}
1da177e4	346	},
2564b7bd EB	347	{
2564b7bd EB	348	{
2564b7bd EB	349	.procname = "active",
	350	.data = NULL,
	351	.maxlen = 0,
	352	.mode = 0444,
6d456111	353	.proc_handler = do_active_device
2564b7bd EB	354	},
	355	{}
	356	},
	357	{
	358	PARPORT_PORT_DIR(NULL),
	359	{}
	360	},
	361	{
	362	PARPORT_PARPORT_DIR(NULL),
	363	{}
	364	},
	365	{
	366	PARPORT_DEV_DIR(NULL),
	367	{}
	368	}
1da177e4 LT	369	};
	370
	371	struct parport_device_sysctl_table
	372	{
	373	struct ctl_table_header *sysctl_header;
be424c63 JP	374	struct ctl_table vars[2];
	375	struct ctl_table device_dir[2];
	376	struct ctl_table devices_root_dir[2];
	377	struct ctl_table port_dir[2];
	378	struct ctl_table parport_dir[2];
	379	struct ctl_table dev_dir[2];
1da177e4 LT	380	};
	381
	382	static const struct parport_device_sysctl_table
	383	parport_device_sysctl_template = {
2564b7bd EB	384	.sysctl_header = NULL,
	385	{
	386	{
2564b7bd EB	387	.procname = "timeslice",
2564b7bd EB	388	.data = NULL,
60af8803	389	.maxlen = sizeof(unsigned long),
2564b7bd	390	.mode = 0644,
6d456111	391	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
2564b7bd EB	392	.extra1 = (void*) &parport_min_timeslice_value,
	393	.extra2 = (void*) &parport_max_timeslice_value
	394	},
	395	},
	396	{
	397	{
2564b7bd EB	398	.procname = NULL,
	399	.data = NULL,
	400	.maxlen = 0,
	401	.mode = 0555,
	402	.child = NULL
	403	},
	404	{}
	405	},
1da177e4	406	{
2564b7bd EB	407	PARPORT_DEVICES_ROOT_DIR,
	408	{}
	409	},
	410	{
	411	PARPORT_PORT_DIR(NULL),
	412	{}
1da177e4	413	},
2564b7bd EB	414	{
	415	PARPORT_PARPORT_DIR(NULL),
	416	{}
	417	},
	418	{
	419	PARPORT_DEV_DIR(NULL),
	420	{}
	421	}
1da177e4 LT	422	};
	423
	424	struct parport_default_sysctl_table
	425	{
	426	struct ctl_table_header *sysctl_header;
be424c63 JP	427	struct ctl_table vars[3];
	428	struct ctl_table default_dir[2];
	429	struct ctl_table parport_dir[2];
	430	struct ctl_table dev_dir[2];
1da177e4 LT	431	};
1da177e4 LT	432
1da177e4 LT	433	static struct parport_default_sysctl_table
1da177e4 LT	434	parport_default_sysctl_table = {
2564b7bd EB	435	.sysctl_header = NULL,
	436	{
	437	{
2564b7bd EB	438	.procname = "timeslice",
	439	.data = &parport_default_timeslice,
	440	.maxlen = sizeof(parport_default_timeslice),
	441	.mode = 0644,
6d456111	442	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
2564b7bd EB	443	.extra1 = (void*) &parport_min_timeslice_value,
	444	.extra2 = (void*) &parport_max_timeslice_value
	445	},
	446	{
2564b7bd EB	447	.procname = "spintime",
	448	.data = &parport_default_spintime,
	449	.maxlen = sizeof(parport_default_spintime),
	450	.mode = 0644,
6d456111	451	.proc_handler = proc_dointvec_minmax,
2564b7bd EB	452	.extra1 = (void*) &parport_min_spintime_value,
	453	.extra2 = (void*) &parport_max_spintime_value
	454	},
	455	{}
	456	},
1da177e4	457	{
2564b7bd	458	{
2564b7bd EB	459	.procname = "default",
	460	.mode = 0555,
	461	.child = parport_default_sysctl_table.vars
	462	},
	463	{}
1da177e4	464	},
1da177e4	465	{
2564b7bd EB	466	PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
	467	{}
	468	},
	469	{
	470	PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir),
	471	{}
	472	}
1da177e4 LT	473	};
	474
	475
	476	int parport_proc_register(struct parport *port)
	477	{
	478	struct parport_sysctl_table *t;
	479	int i;
	480
2451a848	481	t = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL);
1da177e4 LT	482	if (t == NULL)
1da177e4 LT	483	return -ENOMEM;
1da177e4 LT	484
	485	t->device_dir[0].extra1 = port;
	486
25398a15	487	for (i = 0; i < 5; i++)
1da177e4 LT	488	t->vars[i].extra1 = port;
	489
	490	t->vars[0].data = &port->spintime;
	491	t->vars[5].child = t->device_dir;
	492
	493	for (i = 0; i < 5; i++)
	494	t->vars[6 + i].extra2 = &port->probe_info[i];
	495
	496	t->port_dir[0].procname = port->name;
1da177e4 LT	497
	498	t->port_dir[0].child = t->vars;
	499	t->parport_dir[0].child = t->port_dir;
	500	t->dev_dir[0].child = t->parport_dir;
	501
0b4d4147	502	t->sysctl_header = register_sysctl_table(t->dev_dir);
1da177e4 LT	503	if (t->sysctl_header == NULL) {
	504	kfree(t);
	505	t = NULL;
	506	}
	507	port->sysctl_table = t;
	508	return 0;
	509	}
	510
	511	int parport_proc_unregister(struct parport *port)
	512	{
	513	if (port->sysctl_table) {
	514	struct parport_sysctl_table *t = port->sysctl_table;
	515	port->sysctl_table = NULL;
	516	unregister_sysctl_table(t->sysctl_header);
	517	kfree(t);
	518	}
	519	return 0;
	520	}
	521
	522	int parport_device_proc_register(struct pardevice *device)
	523	{
	524	struct parport_device_sysctl_table *t;
	525	struct parport * port = device->port;
	526
2451a848	527	t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
1da177e4 LT	528	if (t == NULL)
1da177e4 LT	529	return -ENOMEM;
1da177e4 LT	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;
1da177e4 LT	534	t->port_dir[0].child = t->devices_root_dir;
	535	t->devices_root_dir[0].child = t->device_dir;
	536
1da177e4	537	t->device_dir[0].procname = device->name;
1da177e4 LT	538	t->device_dir[0].child = t->vars;
	539	t->vars[0].data = &device->timeslice;
	540
0b4d4147	541	t->sysctl_header = register_sysctl_table(t->dev_dir);
1da177e4 LT	542	if (t->sysctl_header == NULL) {
	543	kfree(t);
	544	t = NULL;
	545	}
	546	device->sysctl_table = t;
	547	return 0;
	548	}
	549
	550	int 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
	561	static int __init parport_default_proc_register(void)
	562	{
6fa45a22 SM	563	int ret;
6fa45a22 SM	564
1da177e4	565	parport_default_sysctl_table.sysctl_header =
0b4d4147	566	register_sysctl_table(parport_default_sysctl_table.dev_dir);
6fa45a22 SM	567	if (!parport_default_sysctl_table.sysctl_header)
	568	return -ENOMEM;
	569	ret = parport_bus_init();
	570	if (ret) {
	571	unregister_sysctl_table(parport_default_sysctl_table.
	572	sysctl_header);
	573	return ret;
	574	}
1da177e4 LT	575	return 0;
	576	}
	577
	578	static void __exit parport_default_proc_unregister(void)
	579	{
	580	if (parport_default_sysctl_table.sysctl_header) {
	581	unregister_sysctl_table(parport_default_sysctl_table.
	582	sysctl_header);
	583	parport_default_sysctl_table.sysctl_header = NULL;
	584	}
6fa45a22	585	parport_bus_exit();
1da177e4 LT	586	}
	587
	588	#else /* no sysctl or no procfs*/
	589
	590	int parport_proc_register(struct parport *pp)
	591	{
	592	return 0;
	593	}
	594
	595	int parport_proc_unregister(struct parport *pp)
	596	{
	597	return 0;
	598	}
	599
	600	int parport_device_proc_register(struct pardevice *device)
	601	{
	602	return 0;
	603	}
	604
	605	int parport_device_proc_unregister(struct pardevice *device)
	606	{
	607	return 0;
	608	}
	609
	610	static int __init parport_default_proc_register (void)
	611	{
6fa45a22	612	return parport_bus_init();
1da177e4 LT	613	}
	614
	615	static void __exit parport_default_proc_unregister (void)
	616	{
6fa45a22	617	parport_bus_exit();
1da177e4 LT	618	}
	619	#endif
	620
bbca503b	621	subsys_initcall(parport_default_proc_register)
1da177e4	622	module_exit(parport_default_proc_unregister)