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/pci.h> 26 #include <linux/device.h> 27 #include <linux/mutex.h> 28 #include <asm/system.h> 29 #include <asm/irq.h> 30 31 #define IN_CARD_SERVICES 32 #include <pcmcia/cs_types.h> 33 #include <pcmcia/ss.h> 34 #include <pcmcia/cs.h> 35 #include <pcmcia/bulkmem.h> 36 #include <pcmcia/cistpl.h> 37 #include <pcmcia/cisreg.h> 38 #include <pcmcia/ds.h> 39 #include "cs_internal.h" 40 41 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev) 42 43 static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr, 44 char *buf) 45 { 46 struct pcmcia_socket *s = to_socket(dev); 47 48 if (!(s->state & SOCKET_PRESENT)) 49 return -ENODEV; 50 if (s->state & SOCKET_CARDBUS) 51 return sprintf(buf, "32-bit\n"); 52 return sprintf(buf, "16-bit\n"); 53 } 54 static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL); 55 56 static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr, 57 char *buf) 58 { 59 struct pcmcia_socket *s = to_socket(dev); 60 61 if (!(s->state & SOCKET_PRESENT)) 62 return -ENODEV; 63 if (s->socket.Vcc) 64 return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, 65 s->socket.Vcc % 10); 66 return sprintf(buf, "X.XV\n"); 67 } 68 static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL); 69 70 static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr, 71 char *buf) 72 { 73 struct pcmcia_socket *s = to_socket(dev); 74 if (!(s->state & SOCKET_PRESENT)) 75 return -ENODEV; 76 return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10); 77 } 78 static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL); 79 80 static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr, 81 char *buf) 82 { 83 struct pcmcia_socket *s = to_socket(dev); 84 if (!(s->state & SOCKET_PRESENT)) 85 return -ENODEV; 86 return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10); 87 } 88 static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL); 89 90 91 static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr, 92 const char *buf, size_t count) 93 { 94 ssize_t ret; 95 struct pcmcia_socket *s = to_socket(dev); 96 97 if (!count) 98 return -EINVAL; 99 100 ret = pcmcia_insert_card(s); 101 102 return ret ? ret : count; 103 } 104 static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert); 105 106 107 static ssize_t pccard_show_card_pm_state(struct device *dev, 108 struct device_attribute *attr, 109 char *buf) 110 { 111 struct pcmcia_socket *s = to_socket(dev); 112 return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on"); 113 } 114 115 static ssize_t pccard_store_card_pm_state(struct device *dev, 116 struct device_attribute *attr, 117 const char *buf, size_t count) 118 { 119 ssize_t ret = -EINVAL; 120 struct pcmcia_socket *s = to_socket(dev); 121 122 if (!count) 123 return -EINVAL; 124 125 if (!(s->state & SOCKET_SUSPEND) && !strncmp(buf, "off", 3)) 126 ret = pcmcia_suspend_card(s); 127 else if ((s->state & SOCKET_SUSPEND) && !strncmp(buf, "on", 2)) 128 ret = pcmcia_resume_card(s); 129 130 return ret ? -ENODEV : count; 131 } 132 static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state); 133 134 static ssize_t pccard_store_eject(struct device *dev, 135 struct device_attribute *attr, 136 const char *buf, size_t count) 137 { 138 ssize_t ret; 139 struct pcmcia_socket *s = to_socket(dev); 140 141 if (!count) 142 return -EINVAL; 143 144 ret = pcmcia_eject_card(s); 145 146 return ret ? ret : count; 147 } 148 static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject); 149 150 151 static ssize_t pccard_show_irq_mask(struct device *dev, 152 struct device_attribute *attr, 153 char *buf) 154 { 155 struct pcmcia_socket *s = to_socket(dev); 156 return sprintf(buf, "0x%04x\n", s->irq_mask); 157 } 158 159 static ssize_t pccard_store_irq_mask(struct device *dev, 160 struct device_attribute *attr, 161 const char *buf, size_t count) 162 { 163 ssize_t ret; 164 struct pcmcia_socket *s = to_socket(dev); 165 u32 mask; 166 167 if (!count) 168 return -EINVAL; 169 170 ret = sscanf (buf, "0x%x\n", &mask); 171 172 if (ret == 1) { 173 s->irq_mask &= mask; 174 ret = 0; 175 } 176 177 return ret ? ret : count; 178 } 179 static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask); 180 181 182 static ssize_t pccard_show_resource(struct device *dev, 183 struct device_attribute *attr, char *buf) 184 { 185 struct pcmcia_socket *s = to_socket(dev); 186 return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no"); 187 } 188 189 static ssize_t pccard_store_resource(struct device *dev, 190 struct device_attribute *attr, 191 const char *buf, size_t count) 192 { 193 unsigned long flags; 194 struct pcmcia_socket *s = to_socket(dev); 195 196 if (!count) 197 return -EINVAL; 198 199 spin_lock_irqsave(&s->lock, flags); 200 if (!s->resource_setup_done) 201 s->resource_setup_done = 1; 202 spin_unlock_irqrestore(&s->lock, flags); 203 204 mutex_lock(&s->skt_mutex); 205 if ((s->callback) && 206 (s->state & SOCKET_PRESENT) && 207 !(s->state & SOCKET_CARDBUS)) { 208 if (try_module_get(s->callback->owner)) { 209 s->callback->requery(s, 0); 210 module_put(s->callback->owner); 211 } 212 } 213 mutex_unlock(&s->skt_mutex); 214 215 return count; 216 } 217 static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); 218 219 220 static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, loff_t off, size_t count) 221 { 222 tuple_t tuple; 223 int status, i; 224 loff_t pointer = 0; 225 ssize_t ret = 0; 226 u_char *tuplebuffer; 227 u_char *tempbuffer; 228 229 tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL); 230 if (!tuplebuffer) 231 return -ENOMEM; 232 233 tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL); 234 if (!tempbuffer) { 235 ret = -ENOMEM; 236 goto free_tuple; 237 } 238 239 memset(&tuple, 0, sizeof(tuple_t)); 240 241 tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON; 242 tuple.DesiredTuple = RETURN_FIRST_TUPLE; 243 tuple.TupleOffset = 0; 244 245 status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple); 246 while (!status) { 247 tuple.TupleData = tuplebuffer; 248 tuple.TupleDataMax = 255; 249 memset(tuplebuffer, 0, sizeof(u_char) * 255); 250 251 status = pccard_get_tuple_data(s, &tuple); 252 if (status) 253 break; 254 255 if (off < (pointer + 2 + tuple.TupleDataLen)) { 256 tempbuffer[0] = tuple.TupleCode & 0xff; 257 tempbuffer[1] = tuple.TupleLink & 0xff; 258 for (i = 0; i < tuple.TupleDataLen; i++) 259 tempbuffer[i + 2] = tuplebuffer[i] & 0xff; 260 261 for (i = 0; i < (2 + tuple.TupleDataLen); i++) { 262 if (((i + pointer) >= off) && 263 (i + pointer) < (off + count)) { 264 buf[ret] = tempbuffer[i]; 265 ret++; 266 } 267 } 268 } 269 270 pointer += 2 + tuple.TupleDataLen; 271 272 if (pointer >= (off + count)) 273 break; 274 275 if (tuple.TupleCode == CISTPL_END) 276 break; 277 status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple); 278 } 279 280 kfree(tempbuffer); 281 free_tuple: 282 kfree(tuplebuffer); 283 284 return (ret); 285 } 286 287 static ssize_t pccard_show_cis(struct kobject *kobj, char *buf, loff_t off, size_t count) 288 { 289 unsigned int size = 0x200; 290 291 if (off >= size) 292 count = 0; 293 else { 294 struct pcmcia_socket *s; 295 cisinfo_t cisinfo; 296 297 if (off + count > size) 298 count = size - off; 299 300 s = to_socket(container_of(kobj, struct device, kobj)); 301 302 if (!(s->state & SOCKET_PRESENT)) 303 return -ENODEV; 304 if (pccard_validate_cis(s, BIND_FN_ALL, &cisinfo)) 305 return -EIO; 306 if (!cisinfo.Chains) 307 return -ENODATA; 308 309 count = pccard_extract_cis(s, buf, off, count); 310 } 311 312 return (count); 313 } 314 315 static ssize_t pccard_store_cis(struct kobject *kobj, char *buf, loff_t off, size_t count) 316 { 317 struct pcmcia_socket *s = to_socket(container_of(kobj, struct device, kobj)); 318 cisdump_t *cis; 319 int error; 320 321 if (off) 322 return -EINVAL; 323 324 if (count >= 0x200) 325 return -EINVAL; 326 327 if (!(s->state & SOCKET_PRESENT)) 328 return -ENODEV; 329 330 cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL); 331 if (!cis) 332 return -ENOMEM; 333 334 cis->Length = count + 1; 335 memcpy(cis->Data, buf, count); 336 337 error = pcmcia_replace_cis(s, cis); 338 kfree(cis); 339 if (error) 340 return -EIO; 341 342 mutex_lock(&s->skt_mutex); 343 if ((s->callback) && (s->state & SOCKET_PRESENT) && 344 !(s->state & SOCKET_CARDBUS)) { 345 if (try_module_get(s->callback->owner)) { 346 s->callback->requery(s, 1); 347 module_put(s->callback->owner); 348 } 349 } 350 mutex_unlock(&s->skt_mutex); 351 352 return count; 353 } 354 355 356 static struct device_attribute *pccard_socket_attributes[] = { 357 &dev_attr_card_type, 358 &dev_attr_card_voltage, 359 &dev_attr_card_vpp, 360 &dev_attr_card_vcc, 361 &dev_attr_card_insert, 362 &dev_attr_card_pm_state, 363 &dev_attr_card_eject, 364 &dev_attr_card_irq_mask, 365 &dev_attr_available_resources_setup_done, 366 NULL, 367 }; 368 369 static struct bin_attribute pccard_cis_attr = { 370 .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR, .owner = THIS_MODULE}, 371 .size = 0x200, 372 .read = pccard_show_cis, 373 .write = pccard_store_cis, 374 }; 375 376 static int __devinit pccard_sysfs_add_socket(struct device *dev, 377 struct class_interface *class_intf) 378 { 379 struct device_attribute **attr; 380 int ret = 0; 381 382 for (attr = pccard_socket_attributes; *attr; attr++) { 383 ret = device_create_file(dev, *attr); 384 if (ret) 385 break; 386 } 387 if (!ret) 388 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); 389 390 return ret; 391 } 392 393 static void __devexit pccard_sysfs_remove_socket(struct device *dev, 394 struct class_interface *class_intf) 395 { 396 struct device_attribute **attr; 397 398 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); 399 for (attr = pccard_socket_attributes; *attr; attr++) 400 device_remove_file(dev, *attr); 401 } 402 403 struct class_interface pccard_sysfs_interface = { 404 .class = &pcmcia_socket_class, 405 .add_dev = &pccard_sysfs_add_socket, 406 .remove_dev = __devexit_p(&pccard_sysfs_remove_socket), 407 }; 408