aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/pcmcia/socket_sysfs.c
blob: 83c6b31133a86962e62745248f7143586c758a3c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
/*
 * socket_sysfs.c -- most of socket-related sysfs output
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * (C) 2003 - 2004		Dominik Brodowski
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/config.h>
#include <linux/string.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/pci.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <asm/system.h>
#include <asm/irq.h>

#define IN_CARD_SERVICES
#include <pcmcia/cs_types.h>
#include <pcmcia/ss.h>
#include <pcmcia/cs.h>
#include <pcmcia/bulkmem.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include "cs_internal.h"

#define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)

static ssize_t pccard_show_type(struct class_device *dev, char *buf)
{
	struct pcmcia_socket *s = to_socket(dev);

	if (!(s->state & SOCKET_PRESENT))
		return -ENODEV;
	if (s->state & SOCKET_CARDBUS)
		return sprintf(buf, "32-bit\n");
	return sprintf(buf, "16-bit\n");
}
static CLASS_DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);

static ssize_t pccard_show_voltage(struct class_device *dev, char *buf)
{
	struct pcmcia_socket *s = to_socket(dev);

	if (!(s->state & SOCKET_PRESENT))
		return -ENODEV;
	if (s->socket.Vcc)
		return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10,
			       s->socket.Vcc % 10);
	return sprintf(buf, "X.XV\n");
}
static CLASS_DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);

static ssize_t pccard_show_vpp(struct class_device *dev, char *buf)
{
	struct pcmcia_socket *s = to_socket(dev);
	if (!(s->state & SOCKET_PRESENT))
		return -ENODEV;
	return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
}
static CLASS_DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);

static ssize_t pccard_show_vcc(struct class_device *dev, char *buf)
{
	struct pcmcia_socket *s = to_socket(dev);
	if (!(s->state & SOCKET_PRESENT))
		return -ENODEV;
	return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
}
static CLASS_DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);


static ssize_t pccard_store_insert(struct class_device *dev, const char *buf, size_t count)
{
	ssize_t ret;
	struct pcmcia_socket *s = to_socket(dev);

	if (!count)
		return -EINVAL;

	ret = pcmcia_insert_card(s);

	return ret ? ret : count;
}
static CLASS_DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);


static ssize_t pccard_show_card_pm_state(struct class_device *dev, char *buf)
{
	struct pcmcia_socket *s = to_socket(dev);
	return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
}

static ssize_t pccard_store_card_pm_state(struct class_device *dev, const char *buf, size_t count)
{
	ssize_t ret = -EINVAL;
	struct pcmcia_socket *s = to_socket(dev);

	if (!count)
		return -EINVAL;

	if (!(s->state & SOCKET_SUSPEND) && !strncmp(buf, "off", 3))
		ret = pcmcia_suspend_card(s);
	else if ((s->state & SOCKET_SUSPEND) && !strncmp(buf, "on", 2))
		ret = pcmcia_resume_card(s);

	return ret ? -ENODEV : count;
}
static CLASS_DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);

static ssize_t pccard_store_eject(struct class_device *dev, const char *buf, size_t count)
{
	ssize_t ret;
	struct pcmcia_socket *s = to_socket(dev);

	if (!count)
		return -EINVAL;

	ret = pcmcia_eject_card(s);

	return ret ? ret : count;
}
static CLASS_DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);


static ssize_t pccard_show_irq_mask(struct class_device *dev, char *buf)
{
	struct pcmcia_socket *s = to_socket(dev);
	return sprintf(buf, "0x%04x\n", s->irq_mask);
}

static ssize_t pccard_store_irq_mask(struct class_device *dev, const char *buf, size_t count)
{
	ssize_t ret;
	struct pcmcia_socket *s = to_socket(dev);
	u32 mask;

	if (!count)
		return -EINVAL;

	ret = sscanf (buf, "0x%x\n", &mask);

	if (ret == 1) {
		s->irq_mask &= mask;
		ret = 0;
	}

	return ret ? ret : count;
}
static CLASS_DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);


static ssize_t pccard_show_resource(struct class_device *dev, char *buf)
{
	struct pcmcia_socket *s = to_socket(dev);
	return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
}

static ssize_t pccard_store_resource(struct class_device *dev, const char *buf, size_t count)
{
	unsigned long flags;
	struct pcmcia_socket *s = to_socket(dev);

	if (!count)
		return -EINVAL;

	spin_lock_irqsave(&s->lock, flags);
	if (!s->resource_setup_done)
		s->resource_setup_done = 1;
	spin_unlock_irqrestore(&s->lock, flags);

	mutex_lock(&s->skt_mutex);
	if ((s->callback) &&
	    (s->state & SOCKET_PRESENT) &&
	    !(s->state & SOCKET_CARDBUS)) {
		if (try_module_get(s->callback->owner)) {
			s->callback->requery(s);
			module_put(s->callback->owner);
		}
	}
	mutex_unlock(&s->skt_mutex);

	return count;
}
static CLASS_DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);


static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, loff_t off, size_t count)
{
	tuple_t tuple;
	int status, i;
	loff_t pointer = 0;
	ssize_t ret = 0;
	u_char *tuplebuffer;
	u_char *tempbuffer;

	tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL);
	if (!tuplebuffer)
		return -ENOMEM;

	tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL);
	if (!tempbuffer) {
		ret = -ENOMEM;
		goto free_tuple;
	}

	memset(&tuple, 0, sizeof(tuple_t));

	tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON;
	tuple.DesiredTuple = RETURN_FIRST_TUPLE;
	tuple.TupleOffset = 0;

	status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple);
	while (!status) {
		tuple.TupleData = tuplebuffer;
		tuple.TupleDataMax = 255;
		memset(tuplebuffer, 0, sizeof(u_char) * 255);

		status = pccard_get_tuple_data(s, &tuple);
		if (status)
			break;

		if (off < (pointer + 2 + tuple.TupleDataLen)) {
			tempbuffer[0] = tuple.TupleCode & 0xff;
			tempbuffer[1] = tuple.TupleLink & 0xff;
			for (i = 0; i < tuple.TupleDataLen; i++)
				tempbuffer[i + 2] = tuplebuffer[i] & 0xff;

			for (i = 0; i < (2 + tuple.TupleDataLen); i++) {
				if (((i + pointer) >= off) &&
				    (i + pointer) < (off + count)) {
					buf[ret] = tempbuffer[i];
					ret++;
				}
			}
		}

		pointer += 2 + tuple.TupleDataLen;

		if (pointer >= (off + count))
			break;

		if (tuple.TupleCode == CISTPL_END)
			break;
		status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple);
	}

	kfree(tempbuffer);
 free_tuple:
	kfree(tuplebuffer);

	return (ret);
}

static ssize_t pccard_show_cis(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
	unsigned int size = 0x200;

	if (off >= size)
		count = 0;
	else {
		struct pcmcia_socket *s;
		cisinfo_t cisinfo;

		if (off + count > size)
			count = size - off;

		s = to_socket(container_of(kobj, struct class_device, kobj));

		if (!(s->state & SOCKET_PRESENT))
			return -ENODEV;
		if (pccard_validate_cis(s, BIND_FN_ALL, &cisinfo))
			return -EIO;
		if (!cisinfo.Chains)
			return -ENODATA;

		count = pccard_extract_cis(s, buf, off, count);
	}

	return (count);
}

static ssize_t pccard_store_cis(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
	struct pcmcia_socket *s = to_socket(container_of(kobj, struct class_device, kobj));
	cisdump_t *cis;
	ssize_t ret = count;

	if (off)
		return -EINVAL;

	if (count >= 0x200)
		return -EINVAL;

	if (!(s->state & SOCKET_PRESENT))
		return -ENODEV;

	cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
	if (!cis)
		return -ENOMEM;

	cis->Length = count + 1;
	memcpy(cis->Data, buf, count);

	if (pcmcia_replace_cis(s, cis))
		ret  = -EIO;

	kfree(cis);

	if (!ret) {
		mutex_lock(&s->skt_mutex);
		if ((s->callback) && (s->state & SOCKET_PRESENT) &&
		    !(s->state & SOCKET_CARDBUS)) {
			if (try_module_get(s->callback->owner)) {
				s->callback->requery(s);
				module_put(s->callback->owner);
			}
		}
		mutex_unlock(&s->skt_mutex);
	}


	return (ret);
}


static struct class_device_attribute *pccard_socket_attributes[] = {
	&class_device_attr_card_type,
	&class_device_attr_card_voltage,
	&class_device_attr_card_vpp,
	&class_device_attr_card_vcc,
	&class_device_attr_card_insert,
	&class_device_attr_card_pm_state,
	&class_device_attr_card_eject,
	&class_device_attr_card_irq_mask,
	&class_device_attr_available_resources_setup_done,
	NULL,
};

static struct bin_attribute pccard_cis_attr = {
	.attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR, .owner = THIS_MODULE},
	.size = 0x200,
	.read = pccard_show_cis,
	.write = pccard_store_cis,
};

static int __devinit pccard_sysfs_add_socket(struct class_device *class_dev,
					     struct class_interface *class_intf)
{
	struct class_device_attribute **attr;
	int ret = 0;

	for (attr = pccard_socket_attributes; *attr; attr++) {
		ret = class_device_create_file(class_dev, *attr);
		if (ret)
			break;
	}
	if (!ret)
		ret = sysfs_create_bin_file(&class_dev->kobj, &pccard_cis_attr);

	return ret;
}

static void __devexit pccard_sysfs_remove_socket(struct class_device *class_dev,
						 struct class_interface *class_intf)
{
	struct class_device_attribute **attr;

	sysfs_remove_bin_file(&class_dev->kobj, &pccard_cis_attr);
	for (attr = pccard_socket_attributes; *attr; attr++)
		class_device_remove_file(class_dev, *attr);
}

struct class_interface pccard_sysfs_interface = {
	.class = &pcmcia_socket_class,
	.add = &pccard_sysfs_add_socket,
	.remove = __devexit_p(&pccard_sysfs_remove_socket),
};