ff079987db1d706e6f6884769f38855cd017ad0d
[linux-2.6.git] / drivers / pcmcia / socket_sysfs.c
1 /*
2  * socket_sysfs.c -- most of socket-related sysfs output
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  *
8  * (C) 2003 - 2004              Dominik Brodowski
9  */
10
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <linux/string.h>
16 #include <linux/major.h>
17 #include <linux/errno.h>
18 #include <linux/slab.h>
19 #include <linux/mm.h>
20 #include <linux/interrupt.h>
21 #include <linux/timer.h>
22 #include <linux/ioport.h>
23 #include <linux/delay.h>
24 #include <linux/pm.h>
25 #include <linux/device.h>
26 #include <linux/mutex.h>
27 #include <asm/system.h>
28 #include <asm/irq.h>
29
30 #define IN_CARD_SERVICES
31 #include <pcmcia/cs_types.h>
32 #include <pcmcia/ss.h>
33 #include <pcmcia/cs.h>
34 #include <pcmcia/bulkmem.h>
35 #include <pcmcia/cistpl.h>
36 #include <pcmcia/cisreg.h>
37 #include <pcmcia/ds.h>
38 #include "cs_internal.h"
39
40 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
41
42 static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,
43                                 char *buf)
44 {
45         struct pcmcia_socket *s = to_socket(dev);
46
47         if (!(s->state & SOCKET_PRESENT))
48                 return -ENODEV;
49         if (s->state & SOCKET_CARDBUS)
50                 return sprintf(buf, "32-bit\n");
51         return sprintf(buf, "16-bit\n");
52 }
53 static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
54
55 static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,
56                                    char *buf)
57 {
58         struct pcmcia_socket *s = to_socket(dev);
59
60         if (!(s->state & SOCKET_PRESENT))
61                 return -ENODEV;
62         if (s->socket.Vcc)
63                 return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10,
64                                s->socket.Vcc % 10);
65         return sprintf(buf, "X.XV\n");
66 }
67 static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
68
69 static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,
70                                char *buf)
71 {
72         struct pcmcia_socket *s = to_socket(dev);
73         if (!(s->state & SOCKET_PRESENT))
74                 return -ENODEV;
75         return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
76 }
77 static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
78
79 static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,
80                                char *buf)
81 {
82         struct pcmcia_socket *s = to_socket(dev);
83         if (!(s->state & SOCKET_PRESENT))
84                 return -ENODEV;
85         return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
86 }
87 static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
88
89
90 static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,
91                                    const char *buf, size_t count)
92 {
93         ssize_t ret;
94         struct pcmcia_socket *s = to_socket(dev);
95
96         if (!count)
97                 return -EINVAL;
98
99         ret = pcmcia_insert_card(s);
100
101         return ret ? ret : count;
102 }
103 static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
104
105
106 static ssize_t pccard_show_card_pm_state(struct device *dev,
107                                          struct device_attribute *attr,
108                                          char *buf)
109 {
110         struct pcmcia_socket *s = to_socket(dev);
111         return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
112 }
113
114 static ssize_t pccard_store_card_pm_state(struct device *dev,
115                                           struct device_attribute *attr,
116                                           const char *buf, size_t count)
117 {
118         ssize_t ret = -EINVAL;
119         struct pcmcia_socket *s = to_socket(dev);
120
121         if (!count)
122                 return -EINVAL;
123
124         if (!(s->state & SOCKET_SUSPEND) && !strncmp(buf, "off", 3))
125                 ret = pcmcia_suspend_card(s);
126         else if ((s->state & SOCKET_SUSPEND) && !strncmp(buf, "on", 2))
127                 ret = pcmcia_resume_card(s);
128
129         return ret ? -ENODEV : count;
130 }
131 static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
132
133 static ssize_t pccard_store_eject(struct device *dev,
134                                   struct device_attribute *attr,
135                                   const char *buf, size_t count)
136 {
137         ssize_t ret;
138         struct pcmcia_socket *s = to_socket(dev);
139
140         if (!count)
141                 return -EINVAL;
142
143         ret = pcmcia_eject_card(s);
144
145         return ret ? ret : count;
146 }
147 static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
148
149
150 static ssize_t pccard_show_irq_mask(struct device *dev,
151                                     struct device_attribute *attr,
152                                     char *buf)
153 {
154         struct pcmcia_socket *s = to_socket(dev);
155         return sprintf(buf, "0x%04x\n", s->irq_mask);
156 }
157
158 static ssize_t pccard_store_irq_mask(struct device *dev,
159                                      struct device_attribute *attr,
160                                      const char *buf, size_t count)
161 {
162         ssize_t ret;
163         struct pcmcia_socket *s = to_socket(dev);
164         u32 mask;
165
166         if (!count)
167                 return -EINVAL;
168
169         ret = sscanf (buf, "0x%x\n", &mask);
170
171         if (ret == 1) {
172                 s->irq_mask &= mask;
173                 ret = 0;
174         }
175
176         return ret ? ret : count;
177 }
178 static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
179
180
181 static ssize_t pccard_show_resource(struct device *dev,
182                                     struct device_attribute *attr, char *buf)
183 {
184         struct pcmcia_socket *s = to_socket(dev);
185         return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
186 }
187
188 static ssize_t pccard_store_resource(struct device *dev,
189                                      struct device_attribute *attr,
190                                      const char *buf, size_t count)
191 {
192         unsigned long flags;
193         struct pcmcia_socket *s = to_socket(dev);
194
195         if (!count)
196                 return -EINVAL;
197
198         spin_lock_irqsave(&s->lock, flags);
199         if (!s->resource_setup_done)
200                 s->resource_setup_done = 1;
201         spin_unlock_irqrestore(&s->lock, flags);
202
203         mutex_lock(&s->skt_mutex);
204         if ((s->callback) &&
205             (s->state & SOCKET_PRESENT) &&
206             !(s->state & SOCKET_CARDBUS)) {
207                 if (try_module_get(s->callback->owner)) {
208                         s->callback->requery(s, 0);
209                         module_put(s->callback->owner);
210                 }
211         }
212         mutex_unlock(&s->skt_mutex);
213
214         return count;
215 }
216 static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
217
218
219 static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, loff_t off, size_t count)
220 {
221         tuple_t tuple;
222         int status, i;
223         loff_t pointer = 0;
224         ssize_t ret = 0;
225         u_char *tuplebuffer;
226         u_char *tempbuffer;
227
228         tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL);
229         if (!tuplebuffer)
230                 return -ENOMEM;
231
232         tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL);
233         if (!tempbuffer) {
234                 ret = -ENOMEM;
235                 goto free_tuple;
236         }
237
238         memset(&tuple, 0, sizeof(tuple_t));
239
240         tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON;
241         tuple.DesiredTuple = RETURN_FIRST_TUPLE;
242         tuple.TupleOffset = 0;
243
244         status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple);
245         while (!status) {
246                 tuple.TupleData = tuplebuffer;
247                 tuple.TupleDataMax = 255;
248                 memset(tuplebuffer, 0, sizeof(u_char) * 255);
249
250                 status = pccard_get_tuple_data(s, &tuple);
251                 if (status)
252                         break;
253
254                 if (off < (pointer + 2 + tuple.TupleDataLen)) {
255                         tempbuffer[0] = tuple.TupleCode & 0xff;
256                         tempbuffer[1] = tuple.TupleLink & 0xff;
257                         for (i = 0; i < tuple.TupleDataLen; i++)
258                                 tempbuffer[i + 2] = tuplebuffer[i] & 0xff;
259
260                         for (i = 0; i < (2 + tuple.TupleDataLen); i++) {
261                                 if (((i + pointer) >= off) &&
262                                     (i + pointer) < (off + count)) {
263                                         buf[ret] = tempbuffer[i];
264                                         ret++;
265                                 }
266                         }
267                 }
268
269                 pointer += 2 + tuple.TupleDataLen;
270
271                 if (pointer >= (off + count))
272                         break;
273
274                 if (tuple.TupleCode == CISTPL_END)
275                         break;
276                 status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple);
277         }
278
279         kfree(tempbuffer);
280  free_tuple:
281         kfree(tuplebuffer);
282
283         return (ret);
284 }
285
286 static ssize_t pccard_show_cis(struct kobject *kobj,
287                                struct bin_attribute *bin_attr,
288                                char *buf, loff_t off, size_t count)
289 {
290         unsigned int size = 0x200;
291
292         if (off >= size)
293                 count = 0;
294         else {
295                 struct pcmcia_socket *s;
296                 unsigned int chains;
297
298                 if (off + count > size)
299                         count = size - off;
300
301                 s = to_socket(container_of(kobj, struct device, kobj));
302
303                 if (!(s->state & SOCKET_PRESENT))
304                         return -ENODEV;
305                 if (pccard_validate_cis(s, BIND_FN_ALL, &chains))
306                         return -EIO;
307                 if (!chains)
308                         return -ENODATA;
309
310                 count = pccard_extract_cis(s, buf, off, count);
311         }
312
313         return (count);
314 }
315
316 static ssize_t pccard_store_cis(struct kobject *kobj,
317                                 struct bin_attribute *bin_attr,
318                                 char *buf, loff_t off, size_t count)
319 {
320         struct pcmcia_socket *s = to_socket(container_of(kobj, struct device, kobj));
321         cisdump_t *cis;
322         int error;
323
324         if (off)
325                 return -EINVAL;
326
327         if (count >= 0x200)
328                 return -EINVAL;
329
330         if (!(s->state & SOCKET_PRESENT))
331                 return -ENODEV;
332
333         cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
334         if (!cis)
335                 return -ENOMEM;
336
337         cis->Length = count + 1;
338         memcpy(cis->Data, buf, count);
339
340         error = pcmcia_replace_cis(s, cis);
341         kfree(cis);
342         if (error)
343                 return -EIO;
344
345         mutex_lock(&s->skt_mutex);
346         if ((s->callback) && (s->state & SOCKET_PRESENT) &&
347             !(s->state & SOCKET_CARDBUS)) {
348                 if (try_module_get(s->callback->owner)) {
349                         s->callback->requery(s, 1);
350                         module_put(s->callback->owner);
351                 }
352         }
353         mutex_unlock(&s->skt_mutex);
354
355         return count;
356 }
357
358
359 static struct attribute *pccard_socket_attributes[] = {
360         &dev_attr_card_type.attr,
361         &dev_attr_card_voltage.attr,
362         &dev_attr_card_vpp.attr,
363         &dev_attr_card_vcc.attr,
364         &dev_attr_card_insert.attr,
365         &dev_attr_card_pm_state.attr,
366         &dev_attr_card_eject.attr,
367         &dev_attr_card_irq_mask.attr,
368         &dev_attr_available_resources_setup_done.attr,
369         NULL,
370 };
371
372 static const struct attribute_group socket_attrs = {
373         .attrs = pccard_socket_attributes,
374 };
375
376 static struct bin_attribute pccard_cis_attr = {
377         .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR },
378         .size = 0x200,
379         .read = pccard_show_cis,
380         .write = pccard_store_cis,
381 };
382
383 int pccard_sysfs_add_socket(struct device *dev)
384 {
385         int ret = 0;
386
387         ret = sysfs_create_group(&dev->kobj, &socket_attrs);
388         if (!ret) {
389                 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
390                 if (ret)
391                         sysfs_remove_group(&dev->kobj, &socket_attrs);
392         }
393         return ret;
394 }
395
396 void pccard_sysfs_remove_socket(struct device *dev)
397 {
398         sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
399         sysfs_remove_group(&dev->kobj, &socket_attrs);
400 }