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, char *buf, loff_t off, size_t count) 287 { 288 unsigned int size = 0x200; 289 290 if (off >= size) 291 count = 0; 292 else { 293 struct pcmcia_socket *s; 294 cisinfo_t cisinfo; 295 296 if (off + count > size) 297 count = size - off; 298 299 s = to_socket(container_of(kobj, struct device, kobj)); 300 301 if (!(s->state & SOCKET_PRESENT)) 302 return -ENODEV; 303 if (pccard_validate_cis(s, BIND_FN_ALL, &cisinfo)) 304 return -EIO; 305 if (!cisinfo.Chains) 306 return -ENODATA; 307 308 count = pccard_extract_cis(s, buf, off, count); 309 } 310 311 return (count); 312 } 313 314 static ssize_t pccard_store_cis(struct kobject *kobj, char *buf, loff_t off, size_t count) 315 { 316 struct pcmcia_socket *s = to_socket(container_of(kobj, struct device, kobj)); 317 cisdump_t *cis; 318 int error; 319 320 if (off) 321 return -EINVAL; 322 323 if (count >= 0x200) 324 return -EINVAL; 325 326 if (!(s->state & SOCKET_PRESENT)) 327 return -ENODEV; 328 329 cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL); 330 if (!cis) 331 return -ENOMEM; 332 333 cis->Length = count + 1; 334 memcpy(cis->Data, buf, count); 335 336 error = pcmcia_replace_cis(s, cis); 337 kfree(cis); 338 if (error) 339 return -EIO; 340 341 mutex_lock(&s->skt_mutex); 342 if ((s->callback) && (s->state & SOCKET_PRESENT) && 343 !(s->state & SOCKET_CARDBUS)) { 344 if (try_module_get(s->callback->owner)) { 345 s->callback->requery(s, 1); 346 module_put(s->callback->owner); 347 } 348 } 349 mutex_unlock(&s->skt_mutex); 350 351 return count; 352 } 353 354 355 static struct device_attribute *pccard_socket_attributes[] = { 356 &dev_attr_card_type, 357 &dev_attr_card_voltage, 358 &dev_attr_card_vpp, 359 &dev_attr_card_vcc, 360 &dev_attr_card_insert, 361 &dev_attr_card_pm_state, 362 &dev_attr_card_eject, 363 &dev_attr_card_irq_mask, 364 &dev_attr_available_resources_setup_done, 365 NULL, 366 }; 367 368 static struct bin_attribute pccard_cis_attr = { 369 .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR, .owner = THIS_MODULE}, 370 .size = 0x200, 371 .read = pccard_show_cis, 372 .write = pccard_store_cis, 373 }; 374 375 static int __devinit pccard_sysfs_add_socket(struct device *dev, 376 struct class_interface *class_intf) 377 { 378 struct device_attribute **attr; 379 int ret = 0; 380 381 for (attr = pccard_socket_attributes; *attr; attr++) { 382 ret = device_create_file(dev, *attr); 383 if (ret) 384 break; 385 } 386 if (!ret) 387 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); 388 389 return ret; 390 } 391 392 static void __devexit pccard_sysfs_remove_socket(struct device *dev, 393 struct class_interface *class_intf) 394 { 395 struct device_attribute **attr; 396 397 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); 398 for (attr = pccard_socket_attributes; *attr; attr++) 399 device_remove_file(dev, *attr); 400 } 401 402 struct class_interface pccard_sysfs_interface = { 403 .class = &pcmcia_socket_class, 404 .add_dev = &pccard_sysfs_add_socket, 405 .remove_dev = __devexit_p(&pccard_sysfs_remove_socket), 406 }; 407