[mirror_ubuntu-jammy-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 *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;
	memcpy(result, buffer, len);
	return 0;
}

#ifdef CONFIG_PARPORT_1284
static int do_autoprobe(struct ctl_table *table, int write,
			void *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;

	memcpy(result, buffer, len);
	return 0;
}
#endif /* IEEE1284.3 support. */

static int do_hardware_base_addr(struct ctl_table *table, int write,
				 void *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;
	memcpy(result, buffer, len);
	return 0;
}

static int do_hardware_irq(struct ctl_table *table, int write,
			   void *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;
	memcpy(result, buffer, len);
	return 0;
}

static int do_hardware_dma(struct ctl_table *table, int write,
			   void *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;
	memcpy(result, buffer, len);
	return 0;
}

static int do_hardware_modes(struct ctl_table *table, int write,
			     void *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)							\
do {									\
	if (port->modes & PARPORT_MODE_##x)				\
		len += sprintf(buffer + len, "%s%s", f++ ? "," : "", #x); \
} while (0)
		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;
	memcpy(result, buffer, len);
	return 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,
32927393	37	void result, size_t lenp, loff_t *ppos)
1da177e4 LT	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;
32927393 CH	68	memcpy(result, buffer, len);
32927393 CH	69	return 0;
1da177e4 LT	70	}
	71
	72	#ifdef CONFIG_PARPORT_1284
be424c63	73	static int do_autoprobe(struct ctl_table *table, int write,
32927393	74	void result, size_t lenp, loff_t *ppos)
1da177e4 LT	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
32927393 CH	111	memcpy(result, buffer, len);
32927393 CH	112	return 0;
1da177e4 LT	113	}
	114	#endif /* IEEE1284.3 support. */
	115
be424c63	116	static int do_hardware_base_addr(struct ctl_table *table, int write,
32927393	117	void result, 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;
32927393 CH	139	memcpy(result, buffer, len);
32927393 CH	140	return 0;
1da177e4 LT	141	}
1da177e4 LT	142
be424c63	143	static int do_hardware_irq(struct ctl_table *table, int write,
32927393	144	void result, size_t lenp, loff_t *ppos)
1da177e4 LT	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;
32927393 CH	166	memcpy(result, buffer, len);
32927393 CH	167	return 0;
1da177e4 LT	168	}
1da177e4 LT	169
be424c63	170	static int do_hardware_dma(struct ctl_table *table, int write,
32927393	171	void result, size_t lenp, loff_t *ppos)
1da177e4 LT	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;
32927393 CH	193	memcpy(result, buffer, len);
32927393 CH	194	return 0;
1da177e4 LT	195	}
1da177e4 LT	196
be424c63	197	static int do_hardware_modes(struct ctl_table *table, int write,
32927393	198	void result, size_t lenp, loff_t *ppos)
1da177e4 LT	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	{
a6abfdff JP	213	#define printmode(x) \
	214	do { \
	215	if (port->modes & PARPORT_MODE_##x) \
	216	len += sprintf(buffer + len, "%s%s", f++ ? "," : "", #x); \
	217	} while (0)
1da177e4 LT	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;
32927393 CH	235	memcpy(result, buffer, len);
32927393 CH	236	return 0;
1da177e4 LT	237	}
1da177e4 LT	238
894d2491 EB	239	#define PARPORT_PORT_DIR(CHILD) { .procname = NULL, .mode = 0555, .child = CHILD }
894d2491 EB	240	#define PARPORT_PARPORT_DIR(CHILD) { .procname = "parport", \
2564b7bd	241	.mode = 0555, .child = CHILD }
894d2491	242	#define PARPORT_DEV_DIR(CHILD) { .procname = "dev", .mode = 0555, .child = CHILD }
25398a15	243	#define PARPORT_DEVICES_ROOT_DIR { .procname = "devices", \
2564b7bd	244	.mode = 0555, .child = NULL }
1da177e4 LT	245
	246	static const unsigned long parport_min_timeslice_value =
	247	PARPORT_MIN_TIMESLICE_VALUE;
	248
	249	static const unsigned long parport_max_timeslice_value =
	250	PARPORT_MAX_TIMESLICE_VALUE;
	251
	252	static const int parport_min_spintime_value =
	253	PARPORT_MIN_SPINTIME_VALUE;
	254
	255	static const int parport_max_spintime_value =
	256	PARPORT_MAX_SPINTIME_VALUE;
	257
	258
	259	struct parport_sysctl_table {
	260	struct ctl_table_header *sysctl_header;
be424c63 JP	261	struct ctl_table vars[12];
	262	struct ctl_table device_dir[2];
	263	struct ctl_table port_dir[2];
	264	struct ctl_table parport_dir[2];
	265	struct ctl_table dev_dir[2];
1da177e4 LT	266	};
	267
	268	static const struct parport_sysctl_table parport_sysctl_template = {
2564b7bd	269	.sysctl_header = NULL,
1da177e4	270	{
2564b7bd	271	{
2564b7bd EB	272	.procname = "spintime",
	273	.data = NULL,
	274	.maxlen = sizeof(int),
	275	.mode = 0644,
6d456111	276	.proc_handler = proc_dointvec_minmax,
2564b7bd EB	277	.extra1 = (void*) &parport_min_spintime_value,
	278	.extra2 = (void*) &parport_max_spintime_value
	279	},
	280	{
2564b7bd EB	281	.procname = "base-addr",
	282	.data = NULL,
	283	.maxlen = 0,
	284	.mode = 0444,
6d456111	285	.proc_handler = do_hardware_base_addr
2564b7bd EB	286	},
2564b7bd EB	287	{
2564b7bd EB	288	.procname = "irq",
	289	.data = NULL,
	290	.maxlen = 0,
	291	.mode = 0444,
6d456111	292	.proc_handler = do_hardware_irq
2564b7bd EB	293	},
2564b7bd EB	294	{
2564b7bd EB	295	.procname = "dma",
	296	.data = NULL,
	297	.maxlen = 0,
	298	.mode = 0444,
6d456111	299	.proc_handler = do_hardware_dma
2564b7bd EB	300	},
2564b7bd EB	301	{
2564b7bd EB	302	.procname = "modes",
	303	.data = NULL,
	304	.maxlen = 0,
	305	.mode = 0444,
6d456111	306	.proc_handler = do_hardware_modes
2564b7bd	307	},
1da177e4 LT	308	PARPORT_DEVICES_ROOT_DIR,
1da177e4 LT	309	#ifdef CONFIG_PARPORT_1284
2564b7bd	310	{
2564b7bd EB	311	.procname = "autoprobe",
	312	.data = NULL,
	313	.maxlen = 0,
	314	.mode = 0444,
6d456111	315	.proc_handler = do_autoprobe
2564b7bd EB	316	},
2564b7bd EB	317	{
2564b7bd EB	318	.procname = "autoprobe0",
	319	.data = NULL,
	320	.maxlen = 0,
	321	.mode = 0444,
6d456111	322	.proc_handler = do_autoprobe
2564b7bd EB	323	},
2564b7bd EB	324	{
2564b7bd EB	325	.procname = "autoprobe1",
	326	.data = NULL,
	327	.maxlen = 0,
	328	.mode = 0444,
6d456111	329	.proc_handler = do_autoprobe
2564b7bd EB	330	},
2564b7bd EB	331	{
2564b7bd EB	332	.procname = "autoprobe2",
	333	.data = NULL,
	334	.maxlen = 0,
	335	.mode = 0444,
6d456111	336	.proc_handler = do_autoprobe
2564b7bd EB	337	},
2564b7bd EB	338	{
2564b7bd EB	339	.procname = "autoprobe3",
	340	.data = NULL,
	341	.maxlen = 0,
	342	.mode = 0444,
6d456111	343	.proc_handler = do_autoprobe
2564b7bd	344	},
1da177e4	345	#endif /* IEEE 1284 support */
2564b7bd	346	{}
1da177e4	347	},
2564b7bd EB	348	{
2564b7bd EB	349	{
2564b7bd EB	350	.procname = "active",
	351	.data = NULL,
	352	.maxlen = 0,
	353	.mode = 0444,
6d456111	354	.proc_handler = do_active_device
2564b7bd EB	355	},
	356	{}
	357	},
	358	{
	359	PARPORT_PORT_DIR(NULL),
	360	{}
	361	},
	362	{
	363	PARPORT_PARPORT_DIR(NULL),
	364	{}
	365	},
	366	{
	367	PARPORT_DEV_DIR(NULL),
	368	{}
	369	}
1da177e4 LT	370	};
	371
	372	struct parport_device_sysctl_table
	373	{
	374	struct ctl_table_header *sysctl_header;
be424c63 JP	375	struct ctl_table vars[2];
	376	struct ctl_table device_dir[2];
	377	struct ctl_table devices_root_dir[2];
	378	struct ctl_table port_dir[2];
	379	struct ctl_table parport_dir[2];
	380	struct ctl_table dev_dir[2];
1da177e4 LT	381	};
	382
	383	static const struct parport_device_sysctl_table
	384	parport_device_sysctl_template = {
2564b7bd EB	385	.sysctl_header = NULL,
	386	{
	387	{
2564b7bd EB	388	.procname = "timeslice",
2564b7bd EB	389	.data = NULL,
60af8803	390	.maxlen = sizeof(unsigned long),
2564b7bd	391	.mode = 0644,
6d456111	392	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
2564b7bd EB	393	.extra1 = (void*) &parport_min_timeslice_value,
	394	.extra2 = (void*) &parport_max_timeslice_value
	395	},
	396	},
	397	{
	398	{
2564b7bd EB	399	.procname = NULL,
	400	.data = NULL,
	401	.maxlen = 0,
	402	.mode = 0555,
	403	.child = NULL
	404	},
	405	{}
	406	},
1da177e4	407	{
2564b7bd EB	408	PARPORT_DEVICES_ROOT_DIR,
	409	{}
	410	},
	411	{
	412	PARPORT_PORT_DIR(NULL),
	413	{}
1da177e4	414	},
2564b7bd EB	415	{
	416	PARPORT_PARPORT_DIR(NULL),
	417	{}
	418	},
	419	{
	420	PARPORT_DEV_DIR(NULL),
	421	{}
	422	}
1da177e4 LT	423	};
	424
	425	struct parport_default_sysctl_table
	426	{
	427	struct ctl_table_header *sysctl_header;
be424c63 JP	428	struct ctl_table vars[3];
	429	struct ctl_table default_dir[2];
	430	struct ctl_table parport_dir[2];
	431	struct ctl_table dev_dir[2];
1da177e4 LT	432	};
1da177e4 LT	433
1da177e4 LT	434	static struct parport_default_sysctl_table
1da177e4 LT	435	parport_default_sysctl_table = {
2564b7bd EB	436	.sysctl_header = NULL,
	437	{
	438	{
2564b7bd EB	439	.procname = "timeslice",
	440	.data = &parport_default_timeslice,
	441	.maxlen = sizeof(parport_default_timeslice),
	442	.mode = 0644,
6d456111	443	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
2564b7bd EB	444	.extra1 = (void*) &parport_min_timeslice_value,
	445	.extra2 = (void*) &parport_max_timeslice_value
	446	},
	447	{
2564b7bd EB	448	.procname = "spintime",
	449	.data = &parport_default_spintime,
	450	.maxlen = sizeof(parport_default_spintime),
	451	.mode = 0644,
6d456111	452	.proc_handler = proc_dointvec_minmax,
2564b7bd EB	453	.extra1 = (void*) &parport_min_spintime_value,
	454	.extra2 = (void*) &parport_max_spintime_value
	455	},
	456	{}
	457	},
1da177e4	458	{
2564b7bd	459	{
2564b7bd EB	460	.procname = "default",
	461	.mode = 0555,
	462	.child = parport_default_sysctl_table.vars
	463	},
	464	{}
1da177e4	465	},
1da177e4	466	{
2564b7bd EB	467	PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
	468	{}
	469	},
	470	{
	471	PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir),
	472	{}
	473	}
1da177e4 LT	474	};
	475
	476
	477	int parport_proc_register(struct parport *port)
	478	{
	479	struct parport_sysctl_table *t;
	480	int i;
	481
2451a848	482	t = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL);
1da177e4 LT	483	if (t == NULL)
1da177e4 LT	484	return -ENOMEM;
1da177e4 LT	485
	486	t->device_dir[0].extra1 = port;
	487
25398a15	488	for (i = 0; i < 5; i++)
1da177e4 LT	489	t->vars[i].extra1 = port;
	490
	491	t->vars[0].data = &port->spintime;
	492	t->vars[5].child = t->device_dir;
	493
	494	for (i = 0; i < 5; i++)
	495	t->vars[6 + i].extra2 = &port->probe_info[i];
	496
	497	t->port_dir[0].procname = port->name;
1da177e4 LT	498
	499	t->port_dir[0].child = t->vars;
	500	t->parport_dir[0].child = t->port_dir;
	501	t->dev_dir[0].child = t->parport_dir;
	502
0b4d4147	503	t->sysctl_header = register_sysctl_table(t->dev_dir);
1da177e4 LT	504	if (t->sysctl_header == NULL) {
	505	kfree(t);
	506	t = NULL;
	507	}
	508	port->sysctl_table = t;
	509	return 0;
	510	}
	511
	512	int parport_proc_unregister(struct parport *port)
	513	{
	514	if (port->sysctl_table) {
	515	struct parport_sysctl_table *t = port->sysctl_table;
	516	port->sysctl_table = NULL;
	517	unregister_sysctl_table(t->sysctl_header);
	518	kfree(t);
	519	}
	520	return 0;
	521	}
	522
	523	int parport_device_proc_register(struct pardevice *device)
	524	{
	525	struct parport_device_sysctl_table *t;
	526	struct parport * port = device->port;
	527
2451a848	528	t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
1da177e4 LT	529	if (t == NULL)
1da177e4 LT	530	return -ENOMEM;
1da177e4 LT	531
	532	t->dev_dir[0].child = t->parport_dir;
	533	t->parport_dir[0].child = t->port_dir;
	534	t->port_dir[0].procname = port->name;
1da177e4 LT	535	t->port_dir[0].child = t->devices_root_dir;
	536	t->devices_root_dir[0].child = t->device_dir;
	537
1da177e4	538	t->device_dir[0].procname = device->name;
1da177e4 LT	539	t->device_dir[0].child = t->vars;
	540	t->vars[0].data = &device->timeslice;
	541
0b4d4147	542	t->sysctl_header = register_sysctl_table(t->dev_dir);
1da177e4 LT	543	if (t->sysctl_header == NULL) {
	544	kfree(t);
	545	t = NULL;
	546	}
	547	device->sysctl_table = t;
	548	return 0;
	549	}
	550
	551	int parport_device_proc_unregister(struct pardevice *device)
	552	{
	553	if (device->sysctl_table) {
	554	struct parport_device_sysctl_table *t = device->sysctl_table;
	555	device->sysctl_table = NULL;
	556	unregister_sysctl_table(t->sysctl_header);
	557	kfree(t);
	558	}
	559	return 0;
	560	}
	561
	562	static int __init parport_default_proc_register(void)
	563	{
6fa45a22 SM	564	int ret;
6fa45a22 SM	565
1da177e4	566	parport_default_sysctl_table.sysctl_header =
0b4d4147	567	register_sysctl_table(parport_default_sysctl_table.dev_dir);
6fa45a22 SM	568	if (!parport_default_sysctl_table.sysctl_header)
	569	return -ENOMEM;
	570	ret = parport_bus_init();
	571	if (ret) {
	572	unregister_sysctl_table(parport_default_sysctl_table.
	573	sysctl_header);
	574	return ret;
	575	}
1da177e4 LT	576	return 0;
	577	}
	578
	579	static void __exit parport_default_proc_unregister(void)
	580	{
	581	if (parport_default_sysctl_table.sysctl_header) {
	582	unregister_sysctl_table(parport_default_sysctl_table.
	583	sysctl_header);
	584	parport_default_sysctl_table.sysctl_header = NULL;
	585	}
6fa45a22	586	parport_bus_exit();
1da177e4 LT	587	}
	588
	589	#else /* no sysctl or no procfs*/
	590
	591	int parport_proc_register(struct parport *pp)
	592	{
	593	return 0;
	594	}
	595
	596	int parport_proc_unregister(struct parport *pp)
	597	{
	598	return 0;
	599	}
	600
	601	int parport_device_proc_register(struct pardevice *device)
	602	{
	603	return 0;
	604	}
	605
	606	int parport_device_proc_unregister(struct pardevice *device)
	607	{
	608	return 0;
	609	}
	610
	611	static int __init parport_default_proc_register (void)
	612	{
6fa45a22	613	return parport_bus_init();
1da177e4 LT	614	}
	615
	616	static void __exit parport_default_proc_unregister (void)
	617	{
6fa45a22	618	parport_bus_exit();
1da177e4 LT	619	}
	620	#endif
	621
bbca503b	622	subsys_initcall(parport_default_proc_register)
1da177e4	623	module_exit(parport_default_proc_unregister)