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

/* 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)
Commit	Line	Data
1da177e4 LT	1	/* Sysctl interface for parport devices.
	2	*
	3	* Authors: David Campbell <campbell@torque.net>
	4	* Tim Waugh <tim@cyberelk.demon.co.uk>
	5	* Philip Blundell <philb@gnu.org>
	6	* Andrea Arcangeli
	7	* Riccardo Facchetti <fizban@tin.it>
	8	*
	9	* based on work by Grant Guenther <grant@torque.net>
	10	* and Philip Blundell
	11	*
	12	* Cleaned up include files - Russell King <linux@arm.uk.linux.org>
	13	*/
	14
	15	#include <linux/string.h>
	16	#include <linux/config.h>
	17	#include <linux/init.h>
	18	#include <linux/module.h>
	19	#include <linux/errno.h>
	20	#include <linux/kernel.h>
	21	#include <linux/slab.h>
	22	#include <linux/parport.h>
	23	#include <linux/ctype.h>
	24	#include <linux/sysctl.h>
	25
	26	#include <asm/uaccess.h>
	27
	28	#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
	29
	30	#define PARPORT_MIN_TIMESLICE_VALUE 1ul
	31	#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
	32	#define PARPORT_MIN_SPINTIME_VALUE 1
	33	#define PARPORT_MAX_SPINTIME_VALUE 1000
	34
	35	static int do_active_device(ctl_table table, int write, struct file filp,
	36	void __user result, size_t lenp, loff_t *ppos)
	37	{
	38	struct parport port = (struct parport )table->extra1;
	39	char buffer[256];
	40	struct pardevice *dev;
	41	int len = 0;
	42
	43	if (write) /* can't happen anyway */
	44	return -EACCES;
	45
	46	if (*ppos) {
	47	*lenp = 0;
	48	return 0;
	49	}
	50
	51	for (dev = port->devices; dev ; dev = dev->next) {
	52	if(dev == port->cad) {
	53	len += sprintf(buffer, "%s\n", dev->name);
	54	}
	55	}
	56
	57	if(!len) {
	58	len += sprintf(buffer, "%s\n", "none");
	59	}
	60
	61	if (len > *lenp)
	62	len = *lenp;
	63	else
	64	*lenp = len;
65
66	*ppos += len;
67
68	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
69	}
70
71	#ifdef CONFIG_PARPORT_1284
72	static int do_autoprobe(ctl_table table, int write, struct file filp,
73	void __user result, size_t lenp, loff_t *ppos)
74	{
75	struct parport_device_info *info = table->extra2;
76	const char *str;
77	char buffer[256];
78	int len = 0;
79
80	if (write) /* permissions stop this */
81	return -EACCES;
82
83	if (*ppos) {
84	*lenp = 0;
85	return 0;
86	}
87
88	if ((str = info->class_name) != NULL)
89	len += sprintf (buffer + len, "CLASS:%s;\n", str);
90
91	if ((str = info->model) != NULL)
92	len += sprintf (buffer + len, "MODEL:%s;\n", str);
93
94	if ((str = info->mfr) != NULL)
95	len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);
96
97	if ((str = info->description) != NULL)
98	len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);
99
100	if ((str = info->cmdset) != NULL)
101	len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);
102
103	if (len > *lenp)
104	len = *lenp;
105	else
106	*lenp = len;
107
108	*ppos += len;
109
110	return copy_to_user (result, buffer, len) ? -EFAULT : 0;
111	}
112	#endif /* IEEE1284.3 support. */
113
114	static int do_hardware_base_addr (ctl_table *table, int write,
115	struct file filp, void __user result,
116	size_t lenp, loff_t ppos)
117	{
118	struct parport port = (struct parport )table->extra1;
119	char buffer[20];
120	int len = 0;
121
122	if (*ppos) {
123	*lenp = 0;
124	return 0;
125	}
126
127	if (write) /* permissions prevent this anyway */
128	return -EACCES;
129
130	len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);
131
132	if (len > *lenp)
133	len = *lenp;
134	else
135	*lenp = len;
136
137	*ppos += len;
138
139	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
140	}
141
142	static int do_hardware_irq (ctl_table *table, int write,
143	struct file filp, void __user result,
144	size_t lenp, loff_t ppos)
145	{
146	struct parport port = (struct parport )table->extra1;
147	char buffer[20];
148	int len = 0;
149
150	if (*ppos) {
151	*lenp = 0;
152	return 0;
153	}
154
155	if (write) /* permissions prevent this anyway */
156	return -EACCES;
157
158	len += sprintf (buffer, "%d\n", port->irq);
159
160	if (len > *lenp)
161	len = *lenp;
162	else
163	*lenp = len;
164
165	*ppos += len;
166
167	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
168	}
169
170	static int do_hardware_dma (ctl_table *table, int write,
171	struct file filp, void __user result,
172	size_t lenp, loff_t ppos)
173	{
174	struct parport port = (struct parport )table->extra1;
175	char buffer[20];
176	int len = 0;
177
178	if (*ppos) {
179	*lenp = 0;
180	return 0;
181	}
182
183	if (write) /* permissions prevent this anyway */
184	return -EACCES;
185
186	len += sprintf (buffer, "%d\n", port->dma);
187
188	if (len > *lenp)
189	len = *lenp;
190	else
191	*lenp = len;
192
193	*ppos += len;
194
195	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
196	}
197
198	static int do_hardware_modes (ctl_table *table, int write,
199	struct file filp, void __user result,
200	size_t lenp, loff_t ppos)
201	{
202	struct parport port = (struct parport )table->extra1;
203	char buffer[40];
204	int len = 0;
205
206	if (*ppos) {
207	*lenp = 0;
208	return 0;
209	}
210
211	if (write) /* permissions prevent this anyway */
212	return -EACCES;
213
214	{
215	#define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}}
216	int f = 0;
217	printmode(PCSPP);
218	printmode(TRISTATE);
219	printmode(COMPAT);
220	printmode(EPP);
221	printmode(ECP);
222	printmode(DMA);
223	#undef printmode
224	}
225	buffer[len++] = '\n';
226
227	if (len > *lenp)
228	len = *lenp;
229	else
230	*lenp = len;
231
232	*ppos += len;
233
234	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
235	}
236
237	#define PARPORT_PORT_DIR(child) { 0, NULL, NULL, 0, 0555, child }
238	#define PARPORT_PARPORT_DIR(child) { DEV_PARPORT, "parport", \
239	NULL, 0, 0555, child }
240	#define PARPORT_DEV_DIR(child) { CTL_DEV, "dev", NULL, 0, 0555, child }
241	#define PARPORT_DEVICES_ROOT_DIR { DEV_PARPORT_DEVICES, "devices", \
242	NULL, 0, 0555, NULL }
243
244	static const unsigned long parport_min_timeslice_value =
245	PARPORT_MIN_TIMESLICE_VALUE;
246
247	static const unsigned long parport_max_timeslice_value =
248	PARPORT_MAX_TIMESLICE_VALUE;
249
250	static const int parport_min_spintime_value =
251	PARPORT_MIN_SPINTIME_VALUE;
252
253	static const int parport_max_spintime_value =
254	PARPORT_MAX_SPINTIME_VALUE;
255
256
257	struct parport_sysctl_table {
258	struct ctl_table_header *sysctl_header;
259	ctl_table vars[12];
260	ctl_table device_dir[2];
261	ctl_table port_dir[2];
262	ctl_table parport_dir[2];
263	ctl_table dev_dir[2];
264	};
265
266	static const struct parport_sysctl_table parport_sysctl_template = {
267	NULL,
268	{
269	{ DEV_PARPORT_SPINTIME, "spintime",
270	NULL, sizeof(int), 0644, NULL,
271	&proc_dointvec_minmax, NULL, NULL,
272	(void*) &parport_min_spintime_value,
273	(void*) &parport_max_spintime_value },
274	{ DEV_PARPORT_BASE_ADDR, "base-addr",
275	NULL, 0, 0444, NULL,
276	&do_hardware_base_addr },
277	{ DEV_PARPORT_IRQ, "irq",
278	NULL, 0, 0444, NULL,
279	&do_hardware_irq },
280	{ DEV_PARPORT_DMA, "dma",
281	NULL, 0, 0444, NULL,
282	&do_hardware_dma },
283	{ DEV_PARPORT_MODES, "modes",
284	NULL, 0, 0444, NULL,
285	&do_hardware_modes },
286	PARPORT_DEVICES_ROOT_DIR,
287	#ifdef CONFIG_PARPORT_1284
288	{ DEV_PARPORT_AUTOPROBE, "autoprobe",
289	NULL, 0, 0444, NULL,
290	&do_autoprobe },
291	{ DEV_PARPORT_AUTOPROBE + 1, "autoprobe0",
292	NULL, 0, 0444, NULL,
293	&do_autoprobe },
294	{ DEV_PARPORT_AUTOPROBE + 2, "autoprobe1",
295	NULL, 0, 0444, NULL,
296	&do_autoprobe },
297	{ DEV_PARPORT_AUTOPROBE + 3, "autoprobe2",
298	NULL, 0, 0444, NULL,
299	&do_autoprobe },
300	{ DEV_PARPORT_AUTOPROBE + 4, "autoprobe3",
301	NULL, 0, 0444, NULL,
302	&do_autoprobe },
303	#endif /* IEEE 1284 support */
304	{0}
305	},
306	{ {DEV_PARPORT_DEVICES_ACTIVE, "active", NULL, 0, 0444, NULL,
307	&do_active_device }, {0}},
308	{ PARPORT_PORT_DIR(NULL), {0}},
309	{ PARPORT_PARPORT_DIR(NULL), {0}},
310	{ PARPORT_DEV_DIR(NULL), {0}}
311	};
312
313	struct parport_device_sysctl_table
314	{
315	struct ctl_table_header *sysctl_header;
316	ctl_table vars[2];
317	ctl_table device_dir[2];
318	ctl_table devices_root_dir[2];
319	ctl_table port_dir[2];
320	ctl_table parport_dir[2];
321	ctl_table dev_dir[2];
322	};
323
324	static const struct parport_device_sysctl_table
325	parport_device_sysctl_template = {
326	NULL,
327	{
328	{ DEV_PARPORT_DEVICE_TIMESLICE, "timeslice",
329	NULL, sizeof(int), 0644, NULL,
330	&proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
331	(void*) &parport_min_timeslice_value,
332	(void*) &parport_max_timeslice_value },
333	},
334	{ {0, NULL, NULL, 0, 0555, NULL}, {0}},
335	{ PARPORT_DEVICES_ROOT_DIR, {0}},
336	{ PARPORT_PORT_DIR(NULL), {0}},
337	{ PARPORT_PARPORT_DIR(NULL), {0}},
338	{ PARPORT_DEV_DIR(NULL), {0}}
339	};
340
341	struct parport_default_sysctl_table
342	{
343	struct ctl_table_header *sysctl_header;
344	ctl_table vars[3];
345	ctl_table default_dir[2];
346	ctl_table parport_dir[2];
347	ctl_table dev_dir[2];
348	};
349
350	extern unsigned long parport_default_timeslice;
351	extern int parport_default_spintime;
352
353	static struct parport_default_sysctl_table
354	parport_default_sysctl_table = {
355	NULL,
356	{
357	{ DEV_PARPORT_DEFAULT_TIMESLICE, "timeslice",
358	&parport_default_timeslice,
359	sizeof(parport_default_timeslice), 0644, NULL,
360	&proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
361	(void*) &parport_min_timeslice_value,
362	(void*) &parport_max_timeslice_value },
363	{ DEV_PARPORT_DEFAULT_SPINTIME, "spintime",
364	&parport_default_spintime,
365	sizeof(parport_default_spintime), 0644, NULL,
366	&proc_dointvec_minmax, NULL, NULL,
367	(void*) &parport_min_spintime_value,
368	(void*) &parport_max_spintime_value },
369	{0}
370	},
371	{ { DEV_PARPORT_DEFAULT, "default", NULL, 0, 0555,
372	parport_default_sysctl_table.vars },{0}},
373	{
374	PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
375	{0}},
376	{ PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir), {0}}
377	};
378
379
380	int parport_proc_register(struct parport *port)
381	{
382	struct parport_sysctl_table *t;
383	int i;
384
385	t = kmalloc(sizeof(*t), GFP_KERNEL);
386	if (t == NULL)
387	return -ENOMEM;
388	memcpy(t, &parport_sysctl_template, sizeof(*t));
389
390	t->device_dir[0].extra1 = port;
391
392	for (i = 0; i < 8; i++)
393	t->vars[i].extra1 = port;
394
395	t->vars[0].data = &port->spintime;
396	t->vars[5].child = t->device_dir;
397
398	for (i = 0; i < 5; i++)
399	t->vars[6 + i].extra2 = &port->probe_info[i];
400
401	t->port_dir[0].procname = port->name;
402	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
403
404	t->port_dir[0].child = t->vars;
405	t->parport_dir[0].child = t->port_dir;
406	t->dev_dir[0].child = t->parport_dir;
407
408	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
409	if (t->sysctl_header == NULL) {
410	kfree(t);
411	t = NULL;
412	}
413	port->sysctl_table = t;
414	return 0;
415	}
416
417	int parport_proc_unregister(struct parport *port)
418	{
419	if (port->sysctl_table) {
420	struct parport_sysctl_table *t = port->sysctl_table;
421	port->sysctl_table = NULL;
422	unregister_sysctl_table(t->sysctl_header);
423	kfree(t);
424	}
425	return 0;
426	}
427
428	int parport_device_proc_register(struct pardevice *device)
429	{
430	struct parport_device_sysctl_table *t;
431	struct parport * port = device->port;
432
433	t = kmalloc(sizeof(*t), GFP_KERNEL);
434	if (t == NULL)
435	return -ENOMEM;
436	memcpy(t, &parport_device_sysctl_template, sizeof(*t));
437
438	t->dev_dir[0].child = t->parport_dir;
439	t->parport_dir[0].child = t->port_dir;
440	t->port_dir[0].procname = port->name;
441	t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
442	t->port_dir[0].child = t->devices_root_dir;
443	t->devices_root_dir[0].child = t->device_dir;
444
445	#ifdef CONFIG_PARPORT_1284
446
447	t->device_dir[0].ctl_name =
448	parport_device_num(port->number, port->muxport,
449	device->daisy)
450	+ 1; /* nb 0 isn't legal here */
451
452	#else /* No IEEE 1284 support */
453
454	/* parport_device_num isn't available. */
455	t->device_dir[0].ctl_name = 1;
456
457	#endif /* IEEE 1284 support or not */
458
459	t->device_dir[0].procname = device->name;
460	t->device_dir[0].extra1 = device;
461	t->device_dir[0].child = t->vars;
462	t->vars[0].data = &device->timeslice;
463
464	t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
465	if (t->sysctl_header == NULL) {
466	kfree(t);
467	t = NULL;
468	}
469	device->sysctl_table = t;
470	return 0;
471	}
472
473	int parport_device_proc_unregister(struct pardevice *device)
474	{
475	if (device->sysctl_table) {
476	struct parport_device_sysctl_table *t = device->sysctl_table;
477	device->sysctl_table = NULL;
478	unregister_sysctl_table(t->sysctl_header);
479	kfree(t);
480	}
481	return 0;
482	}
483
484	static int __init parport_default_proc_register(void)
485	{
486	parport_default_sysctl_table.sysctl_header =
487	register_sysctl_table(parport_default_sysctl_table.dev_dir, 0);
488	return 0;
489	}
490
491	static void __exit parport_default_proc_unregister(void)
492	{
493	if (parport_default_sysctl_table.sysctl_header) {
494	unregister_sysctl_table(parport_default_sysctl_table.
495	sysctl_header);
496	parport_default_sysctl_table.sysctl_header = NULL;
497	}
498	}
499
500	#else /* no sysctl or no procfs*/
501
502	int parport_proc_register(struct parport *pp)
503	{
504	return 0;
505	}
506
507	int parport_proc_unregister(struct parport *pp)
508	{
509	return 0;
510	}
511
512	int parport_device_proc_register(struct pardevice *device)
513	{
514	return 0;
515	}
516
517	int parport_device_proc_unregister(struct pardevice *device)
518	{
519	return 0;
520	}
521
522	static int __init parport_default_proc_register (void)
523	{
524	return 0;
525	}
526
527	static void __exit parport_default_proc_unregister (void)
528	{
529	}
530	#endif
531
532	module_init(parport_default_proc_register)
533	module_exit(parport_default_proc_unregister)