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