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/config.h> 16 #include <linux/string.h> 17 #include <linux/major.h> 18 #include <linux/errno.h> 19 #include <linux/slab.h> 20 #include <linux/mm.h> 21 #include <linux/interrupt.h> 22 #include <linux/timer.h> 23 #include <linux/ioport.h> 24 #include <linux/delay.h> 25 #include <linux/pm.h> 26 #include <linux/pci.h> 27 #include <linux/device.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 static ssize_t pccard_store_eject(struct class_device *dev, const char *buf, size_t count) 102 { 103 ssize_t ret; 104 struct pcmcia_socket *s = to_socket(dev); 105 106 if (!count) 107 return -EINVAL; 108 109 ret = pcmcia_eject_card(s); 110 111 return ret ? ret : count; 112 } 113 static CLASS_DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject); 114 115 116 static ssize_t pccard_show_irq_mask(struct class_device *dev, char *buf) 117 { 118 struct pcmcia_socket *s = to_socket(dev); 119 return sprintf(buf, "0x%04x\n", s->irq_mask); 120 } 121 122 static ssize_t pccard_store_irq_mask(struct class_device *dev, const char *buf, size_t count) 123 { 124 ssize_t ret; 125 struct pcmcia_socket *s = to_socket(dev); 126 u32 mask; 127 128 if (!count) 129 return -EINVAL; 130 131 ret = sscanf (buf, "0x%x\n", &mask); 132 133 if (ret == 1) { 134 s->irq_mask &= mask; 135 ret = 0; 136 } 137 138 return ret ? ret : count; 139 } 140 static CLASS_DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask); 141 142 143 static ssize_t pccard_show_resource(struct class_device *dev, char *buf) 144 { 145 struct pcmcia_socket *s = to_socket(dev); 146 return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no"); 147 } 148 149 static ssize_t pccard_store_resource(struct class_device *dev, const char *buf, size_t count) 150 { 151 unsigned long flags; 152 struct pcmcia_socket *s = to_socket(dev); 153 154 if (!count) 155 return -EINVAL; 156 157 spin_lock_irqsave(&s->lock, flags); 158 if (!s->resource_setup_done) 159 s->resource_setup_done = 1; 160 spin_unlock_irqrestore(&s->lock, flags); 161 162 down(&s->skt_sem); 163 if ((s->callback) && 164 (s->state & SOCKET_PRESENT) && 165 !(s->state & SOCKET_CARDBUS)) { 166 if (try_module_get(s->callback->owner)) { 167 s->callback->requery(s); 168 module_put(s->callback->owner); 169 } 170 } 171 up(&s->skt_sem); 172 173 return count; 174 } 175 static CLASS_DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); 176 177 178 static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, loff_t off, size_t count) 179 { 180 tuple_t tuple; 181 int status, i; 182 loff_t pointer = 0; 183 ssize_t ret = 0; 184 u_char *tuplebuffer; 185 u_char *tempbuffer; 186 187 tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL); 188 if (!tuplebuffer) 189 return -ENOMEM; 190 191 tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL); 192 if (!tempbuffer) { 193 ret = -ENOMEM; 194 goto free_tuple; 195 } 196 197 memset(&tuple, 0, sizeof(tuple_t)); 198 199 tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON; 200 tuple.DesiredTuple = RETURN_FIRST_TUPLE; 201 tuple.TupleOffset = 0; 202 203 status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple); 204 while (!status) { 205 tuple.TupleData = tuplebuffer; 206 tuple.TupleDataMax = 255; 207 memset(tuplebuffer, 0, sizeof(u_char) * 255); 208 209 status = pccard_get_tuple_data(s, &tuple); 210 if (status) 211 break; 212 213 if (off < (pointer + 2 + tuple.TupleDataLen)) { 214 tempbuffer[0] = tuple.TupleCode & 0xff; 215 tempbuffer[1] = tuple.TupleLink & 0xff; 216 for (i = 0; i < tuple.TupleDataLen; i++) 217 tempbuffer[i + 2] = tuplebuffer[i] & 0xff; 218 219 for (i = 0; i < (2 + tuple.TupleDataLen); i++) { 220 if (((i + pointer) >= off) && 221 (i + pointer) < (off + count)) { 222 buf[ret] = tempbuffer[i]; 223 ret++; 224 } 225 } 226 } 227 228 pointer += 2 + tuple.TupleDataLen; 229 230 if (pointer >= (off + count)) 231 break; 232 233 if (tuple.TupleCode == CISTPL_END) 234 break; 235 status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple); 236 } 237 238 kfree(tempbuffer); 239 free_tuple: 240 kfree(tuplebuffer); 241 242 return (ret); 243 } 244 245 static ssize_t pccard_show_cis(struct kobject *kobj, char *buf, loff_t off, size_t count) 246 { 247 unsigned int size = 0x200; 248 249 if (off >= size) 250 count = 0; 251 else { 252 struct pcmcia_socket *s; 253 cisinfo_t cisinfo; 254 255 if (off + count > size) 256 count = size - off; 257 258 s = to_socket(container_of(kobj, struct class_device, kobj)); 259 260 if (!(s->state & SOCKET_PRESENT)) 261 return -ENODEV; 262 if (pccard_validate_cis(s, BIND_FN_ALL, &cisinfo)) 263 return -EIO; 264 if (!cisinfo.Chains) 265 return -ENODATA; 266 267 count = pccard_extract_cis(s, buf, off, count); 268 } 269 270 return (count); 271 } 272 273 static ssize_t pccard_store_cis(struct kobject *kobj, char *buf, loff_t off, size_t count) 274 { 275 struct pcmcia_socket *s = to_socket(container_of(kobj, struct class_device, kobj)); 276 cisdump_t *cis; 277 ssize_t ret = count; 278 279 if (off) 280 return -EINVAL; 281 282 if (count >= 0x200) 283 return -EINVAL; 284 285 if (!(s->state & SOCKET_PRESENT)) 286 return -ENODEV; 287 288 cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL); 289 if (!cis) 290 return -ENOMEM; 291 292 cis->Length = count + 1; 293 memcpy(cis->Data, buf, count); 294 295 if (pcmcia_replace_cis(s, cis)) 296 ret = -EIO; 297 298 kfree(cis); 299 300 if (!ret) { 301 down(&s->skt_sem); 302 if ((s->callback) && (s->state & SOCKET_PRESENT) && 303 !(s->state & SOCKET_CARDBUS)) { 304 if (try_module_get(s->callback->owner)) { 305 s->callback->requery(s); 306 module_put(s->callback->owner); 307 } 308 } 309 up(&s->skt_sem); 310 } 311 312 313 return (ret); 314 } 315 316 317 static struct class_device_attribute *pccard_socket_attributes[] = { 318 &class_device_attr_card_type, 319 &class_device_attr_card_voltage, 320 &class_device_attr_card_vpp, 321 &class_device_attr_card_vcc, 322 &class_device_attr_card_insert, 323 &class_device_attr_card_eject, 324 &class_device_attr_card_irq_mask, 325 &class_device_attr_available_resources_setup_done, 326 NULL, 327 }; 328 329 static struct bin_attribute pccard_cis_attr = { 330 .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR, .owner = THIS_MODULE}, 331 .size = 0x200, 332 .read = pccard_show_cis, 333 .write = pccard_store_cis, 334 }; 335 336 static int __devinit pccard_sysfs_add_socket(struct class_device *class_dev, 337 struct class_interface *class_intf) 338 { 339 struct class_device_attribute **attr; 340 int ret = 0; 341 342 for (attr = pccard_socket_attributes; *attr; attr++) { 343 ret = class_device_create_file(class_dev, *attr); 344 if (ret) 345 break; 346 } 347 if (!ret) 348 ret = sysfs_create_bin_file(&class_dev->kobj, &pccard_cis_attr); 349 350 return ret; 351 } 352 353 static void __devexit pccard_sysfs_remove_socket(struct class_device *class_dev, 354 struct class_interface *class_intf) 355 { 356 struct class_device_attribute **attr; 357 358 sysfs_remove_bin_file(&class_dev->kobj, &pccard_cis_attr); 359 for (attr = pccard_socket_attributes; *attr; attr++) 360 class_device_remove_file(class_dev, *attr); 361 } 362 363 struct class_interface pccard_sysfs_interface = { 364 .class = &pcmcia_socket_class, 365 .add = &pccard_sysfs_add_socket, 366 .remove = __devexit_p(&pccard_sysfs_remove_socket), 367 }; 368