Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 1 | /* |
| 2 | * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040 |
| 3 | * |
| 4 | * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/) |
| 5 | * |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 6 | * (C) 2005-2006 Harald Welte <laforge@gnumonks.org> |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 7 | * - add support for poll() |
| 8 | * - driver cleanup |
| 9 | * - add waitqueues |
| 10 | * - adhere to linux kernel coding style and policies |
| 11 | * - support 2.6.13 "new style" pcmcia interface |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 12 | * - add class interface for udev device creation |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 13 | * |
| 14 | * The device basically is a USB CCID compliant device that has been |
| 15 | * attached to an I/O-Mapped FIFO. |
| 16 | * |
| 17 | * All rights reserved, Dual BSD/GPL Licensed. |
| 18 | */ |
| 19 | |
| 20 | /* #define PCMCIA_DEBUG 6 */ |
| 21 | |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/fs.h> |
| 27 | #include <linux/delay.h> |
| 28 | #include <linux/poll.h> |
| 29 | #include <linux/wait.h> |
| 30 | #include <asm/uaccess.h> |
| 31 | #include <asm/io.h> |
| 32 | |
| 33 | #include <pcmcia/cs_types.h> |
| 34 | #include <pcmcia/cs.h> |
| 35 | #include <pcmcia/cistpl.h> |
| 36 | #include <pcmcia/cisreg.h> |
| 37 | #include <pcmcia/ciscode.h> |
| 38 | #include <pcmcia/ds.h> |
| 39 | |
| 40 | #include "cm4040_cs.h" |
| 41 | |
| 42 | |
| 43 | #ifdef PCMCIA_DEBUG |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 44 | #define reader_to_dev(x) (&handle_to_dev(x->p_dev->handle)) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 45 | static int pc_debug = PCMCIA_DEBUG; |
| 46 | module_param(pc_debug, int, 0600); |
| 47 | #define DEBUGP(n, rdr, x, args...) do { \ |
| 48 | if (pc_debug >= (n)) \ |
| 49 | dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \ |
| 50 | __FUNCTION__ , ##args); \ |
| 51 | } while (0) |
| 52 | #else |
| 53 | #define DEBUGP(n, rdr, x, args...) |
| 54 | #endif |
| 55 | |
| 56 | static char *version = |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 57 | "OMNIKEY CardMan 4040 v1.1.0gm5 - All bugs added by Harald Welte"; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 58 | |
| 59 | #define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ) |
| 60 | #define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ) |
| 61 | #define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ) |
| 62 | #define READ_WRITE_BUFFER_SIZE 512 |
| 63 | #define POLL_LOOP_COUNT 1000 |
| 64 | |
| 65 | /* how often to poll for fifo status change */ |
| 66 | #define POLL_PERIOD msecs_to_jiffies(10) |
| 67 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 68 | static void reader_release(struct pcmcia_device *link); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 69 | |
| 70 | static int major; |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 71 | static struct class *cmx_class; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 72 | |
| 73 | #define BS_READABLE 0x01 |
| 74 | #define BS_WRITABLE 0x02 |
| 75 | |
| 76 | struct reader_dev { |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 77 | struct pcmcia_device *p_dev; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 78 | dev_node_t node; |
| 79 | wait_queue_head_t devq; |
| 80 | wait_queue_head_t poll_wait; |
| 81 | wait_queue_head_t read_wait; |
| 82 | wait_queue_head_t write_wait; |
| 83 | unsigned long buffer_status; |
| 84 | unsigned long timeout; |
| 85 | unsigned char s_buf[READ_WRITE_BUFFER_SIZE]; |
| 86 | unsigned char r_buf[READ_WRITE_BUFFER_SIZE]; |
| 87 | struct timer_list poll_timer; |
| 88 | }; |
| 89 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 90 | static struct pcmcia_device *dev_table[CM_MAX_DEV]; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 91 | |
| 92 | #ifndef PCMCIA_DEBUG |
| 93 | #define xoutb outb |
| 94 | #define xinb inb |
| 95 | #else |
| 96 | static inline void xoutb(unsigned char val, unsigned short port) |
| 97 | { |
| 98 | if (pc_debug >= 7) |
| 99 | printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port); |
| 100 | outb(val, port); |
| 101 | } |
| 102 | |
| 103 | static inline unsigned char xinb(unsigned short port) |
| 104 | { |
| 105 | unsigned char val; |
| 106 | |
| 107 | val = inb(port); |
| 108 | if (pc_debug >= 7) |
| 109 | printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port); |
| 110 | return val; |
| 111 | } |
| 112 | #endif |
| 113 | |
| 114 | /* poll the device fifo status register. not to be confused with |
| 115 | * the poll syscall. */ |
| 116 | static void cm4040_do_poll(unsigned long dummy) |
| 117 | { |
| 118 | struct reader_dev *dev = (struct reader_dev *) dummy; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 119 | unsigned int obs = xinb(dev->p_dev->io.BasePort1 |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 120 | + REG_OFFSET_BUFFER_STATUS); |
| 121 | |
| 122 | if ((obs & BSR_BULK_IN_FULL)) { |
| 123 | set_bit(BS_READABLE, &dev->buffer_status); |
| 124 | DEBUGP(4, dev, "waking up read_wait\n"); |
| 125 | wake_up_interruptible(&dev->read_wait); |
| 126 | } else |
| 127 | clear_bit(BS_READABLE, &dev->buffer_status); |
| 128 | |
| 129 | if (!(obs & BSR_BULK_OUT_FULL)) { |
| 130 | set_bit(BS_WRITABLE, &dev->buffer_status); |
| 131 | DEBUGP(4, dev, "waking up write_wait\n"); |
| 132 | wake_up_interruptible(&dev->write_wait); |
| 133 | } else |
| 134 | clear_bit(BS_WRITABLE, &dev->buffer_status); |
| 135 | |
| 136 | if (dev->buffer_status) |
| 137 | wake_up_interruptible(&dev->poll_wait); |
| 138 | |
| 139 | mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD); |
| 140 | } |
| 141 | |
| 142 | static void cm4040_stop_poll(struct reader_dev *dev) |
| 143 | { |
| 144 | del_timer_sync(&dev->poll_timer); |
| 145 | } |
| 146 | |
| 147 | static int wait_for_bulk_out_ready(struct reader_dev *dev) |
| 148 | { |
| 149 | int i, rc; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 150 | int iobase = dev->p_dev->io.BasePort1; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 151 | |
| 152 | for (i = 0; i < POLL_LOOP_COUNT; i++) { |
| 153 | if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS) |
| 154 | & BSR_BULK_OUT_FULL) == 0) { |
| 155 | DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i); |
| 156 | return 1; |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n", |
| 161 | dev->timeout); |
| 162 | rc = wait_event_interruptible_timeout(dev->write_wait, |
| 163 | test_and_clear_bit(BS_WRITABLE, |
| 164 | &dev->buffer_status), |
| 165 | dev->timeout); |
| 166 | |
| 167 | if (rc > 0) |
| 168 | DEBUGP(4, dev, "woke up: BulkOut empty\n"); |
| 169 | else if (rc == 0) |
| 170 | DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n"); |
| 171 | else if (rc < 0) |
| 172 | DEBUGP(4, dev, "woke up: signal arrived\n"); |
| 173 | |
| 174 | return rc; |
| 175 | } |
| 176 | |
| 177 | /* Write to Sync Control Register */ |
| 178 | static int write_sync_reg(unsigned char val, struct reader_dev *dev) |
| 179 | { |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 180 | int iobase = dev->p_dev->io.BasePort1; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 181 | int rc; |
| 182 | |
| 183 | rc = wait_for_bulk_out_ready(dev); |
| 184 | if (rc <= 0) |
| 185 | return rc; |
| 186 | |
| 187 | xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL); |
| 188 | rc = wait_for_bulk_out_ready(dev); |
| 189 | if (rc <= 0) |
| 190 | return rc; |
| 191 | |
| 192 | return 1; |
| 193 | } |
| 194 | |
| 195 | static int wait_for_bulk_in_ready(struct reader_dev *dev) |
| 196 | { |
| 197 | int i, rc; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 198 | int iobase = dev->p_dev->io.BasePort1; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 199 | |
| 200 | for (i = 0; i < POLL_LOOP_COUNT; i++) { |
| 201 | if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS) |
| 202 | & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) { |
| 203 | DEBUGP(3, dev, "BulkIn full (i=%d)\n", i); |
| 204 | return 1; |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n", |
| 209 | dev->timeout); |
| 210 | rc = wait_event_interruptible_timeout(dev->read_wait, |
| 211 | test_and_clear_bit(BS_READABLE, |
| 212 | &dev->buffer_status), |
| 213 | dev->timeout); |
| 214 | if (rc > 0) |
| 215 | DEBUGP(4, dev, "woke up: BulkIn full\n"); |
| 216 | else if (rc == 0) |
| 217 | DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n"); |
| 218 | else if (rc < 0) |
| 219 | DEBUGP(4, dev, "woke up: signal arrived\n"); |
| 220 | |
| 221 | return rc; |
| 222 | } |
| 223 | |
| 224 | static ssize_t cm4040_read(struct file *filp, char __user *buf, |
| 225 | size_t count, loff_t *ppos) |
| 226 | { |
| 227 | struct reader_dev *dev = filp->private_data; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 228 | int iobase = dev->p_dev->io.BasePort1; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 229 | size_t bytes_to_read; |
| 230 | unsigned long i; |
| 231 | size_t min_bytes_to_read; |
| 232 | int rc; |
| 233 | unsigned char uc; |
| 234 | |
| 235 | DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid); |
| 236 | |
| 237 | if (count == 0) |
| 238 | return 0; |
| 239 | |
| 240 | if (count < 10) |
| 241 | return -EFAULT; |
| 242 | |
| 243 | if (filp->f_flags & O_NONBLOCK) { |
| 244 | DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n"); |
| 245 | DEBUGP(2, dev, "<- cm4040_read (failure)\n"); |
| 246 | return -EAGAIN; |
| 247 | } |
| 248 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 249 | if (!pcmcia_dev_present(dev->p_dev)) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 250 | return -ENODEV; |
| 251 | |
| 252 | for (i = 0; i < 5; i++) { |
| 253 | rc = wait_for_bulk_in_ready(dev); |
| 254 | if (rc <= 0) { |
| 255 | DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc); |
| 256 | DEBUGP(2, dev, "<- cm4040_read (failed)\n"); |
| 257 | if (rc == -ERESTARTSYS) |
| 258 | return rc; |
| 259 | return -EIO; |
| 260 | } |
| 261 | dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN); |
| 262 | #ifdef PCMCIA_DEBUG |
| 263 | if (pc_debug >= 6) |
| 264 | printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]); |
| 265 | } |
| 266 | printk("\n"); |
| 267 | #else |
| 268 | } |
| 269 | #endif |
| 270 | |
| 271 | bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]); |
| 272 | |
| 273 | DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read); |
| 274 | |
| 275 | min_bytes_to_read = min(count, bytes_to_read + 5); |
| 276 | |
| 277 | DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read); |
| 278 | |
| 279 | for (i = 0; i < (min_bytes_to_read-5); i++) { |
| 280 | rc = wait_for_bulk_in_ready(dev); |
| 281 | if (rc <= 0) { |
| 282 | DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc); |
| 283 | DEBUGP(2, dev, "<- cm4040_read (failed)\n"); |
| 284 | if (rc == -ERESTARTSYS) |
| 285 | return rc; |
| 286 | return -EIO; |
| 287 | } |
| 288 | dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN); |
| 289 | #ifdef PCMCIA_DEBUG |
| 290 | if (pc_debug >= 6) |
| 291 | printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]); |
| 292 | } |
| 293 | printk("\n"); |
| 294 | #else |
| 295 | } |
| 296 | #endif |
| 297 | |
| 298 | *ppos = min_bytes_to_read; |
| 299 | if (copy_to_user(buf, dev->r_buf, min_bytes_to_read)) |
| 300 | return -EFAULT; |
| 301 | |
| 302 | rc = wait_for_bulk_in_ready(dev); |
| 303 | if (rc <= 0) { |
| 304 | DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc); |
| 305 | DEBUGP(2, dev, "<- cm4040_read (failed)\n"); |
| 306 | if (rc == -ERESTARTSYS) |
| 307 | return rc; |
| 308 | return -EIO; |
| 309 | } |
| 310 | |
| 311 | rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev); |
| 312 | if (rc <= 0) { |
| 313 | DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc); |
| 314 | DEBUGP(2, dev, "<- cm4040_read (failed)\n"); |
| 315 | if (rc == -ERESTARTSYS) |
| 316 | return rc; |
| 317 | else |
| 318 | return -EIO; |
| 319 | } |
| 320 | |
| 321 | uc = xinb(iobase + REG_OFFSET_BULK_IN); |
| 322 | |
| 323 | DEBUGP(2, dev, "<- cm4040_read (successfully)\n"); |
| 324 | return min_bytes_to_read; |
| 325 | } |
| 326 | |
| 327 | static ssize_t cm4040_write(struct file *filp, const char __user *buf, |
| 328 | size_t count, loff_t *ppos) |
| 329 | { |
| 330 | struct reader_dev *dev = filp->private_data; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 331 | int iobase = dev->p_dev->io.BasePort1; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 332 | ssize_t rc; |
| 333 | int i; |
| 334 | unsigned int bytes_to_write; |
| 335 | |
| 336 | DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid); |
| 337 | |
| 338 | if (count == 0) { |
| 339 | DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n"); |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | if (count < 5) { |
| 344 | DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count); |
| 345 | return -EIO; |
| 346 | } |
| 347 | |
| 348 | if (filp->f_flags & O_NONBLOCK) { |
| 349 | DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n"); |
| 350 | DEBUGP(4, dev, "<- cm4040_write (failure)\n"); |
| 351 | return -EAGAIN; |
| 352 | } |
| 353 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 354 | if (!pcmcia_dev_present(dev->p_dev)) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 355 | return -ENODEV; |
| 356 | |
| 357 | bytes_to_write = count; |
| 358 | if (copy_from_user(dev->s_buf, buf, bytes_to_write)) |
| 359 | return -EFAULT; |
| 360 | |
| 361 | switch (dev->s_buf[0]) { |
| 362 | case CMD_PC_TO_RDR_XFRBLOCK: |
| 363 | case CMD_PC_TO_RDR_SECURE: |
| 364 | case CMD_PC_TO_RDR_TEST_SECURE: |
| 365 | case CMD_PC_TO_RDR_OK_SECURE: |
| 366 | dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT; |
| 367 | break; |
| 368 | |
| 369 | case CMD_PC_TO_RDR_ICCPOWERON: |
| 370 | dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT; |
| 371 | break; |
| 372 | |
| 373 | case CMD_PC_TO_RDR_GETSLOTSTATUS: |
| 374 | case CMD_PC_TO_RDR_ICCPOWEROFF: |
| 375 | case CMD_PC_TO_RDR_GETPARAMETERS: |
| 376 | case CMD_PC_TO_RDR_RESETPARAMETERS: |
| 377 | case CMD_PC_TO_RDR_SETPARAMETERS: |
| 378 | case CMD_PC_TO_RDR_ESCAPE: |
| 379 | case CMD_PC_TO_RDR_ICCCLOCK: |
| 380 | default: |
| 381 | dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT; |
| 382 | break; |
| 383 | } |
| 384 | |
| 385 | rc = write_sync_reg(SCR_HOST_TO_READER_START, dev); |
| 386 | if (rc <= 0) { |
| 387 | DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc); |
| 388 | DEBUGP(2, dev, "<- cm4040_write (failed)\n"); |
| 389 | if (rc == -ERESTARTSYS) |
| 390 | return rc; |
| 391 | else |
| 392 | return -EIO; |
| 393 | } |
| 394 | |
| 395 | DEBUGP(4, dev, "start \n"); |
| 396 | |
| 397 | for (i = 0; i < bytes_to_write; i++) { |
| 398 | rc = wait_for_bulk_out_ready(dev); |
| 399 | if (rc <= 0) { |
| 400 | DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n", |
| 401 | rc); |
| 402 | DEBUGP(2, dev, "<- cm4040_write (failed)\n"); |
| 403 | if (rc == -ERESTARTSYS) |
| 404 | return rc; |
| 405 | else |
| 406 | return -EIO; |
| 407 | } |
| 408 | |
| 409 | xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT); |
| 410 | } |
| 411 | DEBUGP(4, dev, "end\n"); |
| 412 | |
| 413 | rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev); |
| 414 | |
| 415 | if (rc <= 0) { |
| 416 | DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc); |
| 417 | DEBUGP(2, dev, "<- cm4040_write (failed)\n"); |
| 418 | if (rc == -ERESTARTSYS) |
| 419 | return rc; |
| 420 | else |
| 421 | return -EIO; |
| 422 | } |
| 423 | |
| 424 | DEBUGP(2, dev, "<- cm4040_write (successfully)\n"); |
| 425 | return count; |
| 426 | } |
| 427 | |
| 428 | static unsigned int cm4040_poll(struct file *filp, poll_table *wait) |
| 429 | { |
| 430 | struct reader_dev *dev = filp->private_data; |
| 431 | unsigned int mask = 0; |
| 432 | |
| 433 | poll_wait(filp, &dev->poll_wait, wait); |
| 434 | |
| 435 | if (test_and_clear_bit(BS_READABLE, &dev->buffer_status)) |
| 436 | mask |= POLLIN | POLLRDNORM; |
| 437 | if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status)) |
| 438 | mask |= POLLOUT | POLLWRNORM; |
| 439 | |
| 440 | DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask); |
| 441 | |
| 442 | return mask; |
| 443 | } |
| 444 | |
| 445 | static int cm4040_open(struct inode *inode, struct file *filp) |
| 446 | { |
| 447 | struct reader_dev *dev; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 448 | struct pcmcia_device *link; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 449 | int minor = iminor(inode); |
| 450 | |
| 451 | if (minor >= CM_MAX_DEV) |
| 452 | return -ENODEV; |
| 453 | |
| 454 | link = dev_table[minor]; |
Dominik Brodowski | 9940ec3 | 2006-03-05 11:04:33 +0100 | [diff] [blame] | 455 | if (link == NULL || !pcmcia_dev_present(link)) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 456 | return -ENODEV; |
| 457 | |
| 458 | if (link->open) |
| 459 | return -EBUSY; |
| 460 | |
| 461 | dev = link->priv; |
| 462 | filp->private_data = dev; |
| 463 | |
| 464 | if (filp->f_flags & O_NONBLOCK) { |
| 465 | DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n"); |
| 466 | return -EAGAIN; |
| 467 | } |
| 468 | |
| 469 | link->open = 1; |
| 470 | |
| 471 | dev->poll_timer.data = (unsigned long) dev; |
| 472 | mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD); |
| 473 | |
| 474 | DEBUGP(2, dev, "<- cm4040_open (successfully)\n"); |
| 475 | return nonseekable_open(inode, filp); |
| 476 | } |
| 477 | |
| 478 | static int cm4040_close(struct inode *inode, struct file *filp) |
| 479 | { |
| 480 | struct reader_dev *dev = filp->private_data; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 481 | struct pcmcia_device *link; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 482 | int minor = iminor(inode); |
| 483 | |
| 484 | DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode), |
| 485 | iminor(inode)); |
| 486 | |
| 487 | if (minor >= CM_MAX_DEV) |
| 488 | return -ENODEV; |
| 489 | |
| 490 | link = dev_table[minor]; |
| 491 | if (link == NULL) |
| 492 | return -ENODEV; |
| 493 | |
| 494 | cm4040_stop_poll(dev); |
| 495 | |
| 496 | link->open = 0; |
| 497 | wake_up(&dev->devq); |
| 498 | |
| 499 | DEBUGP(2, dev, "<- cm4040_close\n"); |
| 500 | return 0; |
| 501 | } |
| 502 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 503 | static void cm4040_reader_release(struct pcmcia_device *link) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 504 | { |
| 505 | struct reader_dev *dev = link->priv; |
| 506 | |
| 507 | DEBUGP(3, dev, "-> cm4040_reader_release\n"); |
| 508 | while (link->open) { |
| 509 | DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release " |
| 510 | "until process has terminated\n"); |
| 511 | wait_event(dev->devq, (link->open == 0)); |
| 512 | } |
| 513 | DEBUGP(3, dev, "<- cm4040_reader_release\n"); |
| 514 | return; |
| 515 | } |
| 516 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 517 | static int reader_config(struct pcmcia_device *link, int devno) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 518 | { |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 519 | struct reader_dev *dev; |
| 520 | tuple_t tuple; |
| 521 | cisparse_t parse; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 522 | u_char buf[64]; |
| 523 | int fail_fn, fail_rc; |
| 524 | int rc; |
| 525 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 526 | tuple.Attributes = 0; |
| 527 | tuple.TupleData = buf; |
| 528 | tuple.TupleDataMax = sizeof(buf); |
| 529 | tuple.TupleOffset = 0; |
| 530 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 531 | link->io.BasePort2 = 0; |
| 532 | link->io.NumPorts2 = 0; |
| 533 | link->io.Attributes2 = 0; |
| 534 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 535 | for (rc = pcmcia_get_first_tuple(link, &tuple); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 536 | rc == CS_SUCCESS; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 537 | rc = pcmcia_get_next_tuple(link, &tuple)) { |
| 538 | rc = pcmcia_get_tuple_data(link, &tuple); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 539 | if (rc != CS_SUCCESS) |
| 540 | continue; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 541 | rc = pcmcia_parse_tuple(link, &tuple, &parse); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 542 | if (rc != CS_SUCCESS) |
| 543 | continue; |
| 544 | |
| 545 | link->conf.ConfigIndex = parse.cftable_entry.index; |
| 546 | |
| 547 | if (!parse.cftable_entry.io.nwin) |
| 548 | continue; |
| 549 | |
| 550 | link->io.BasePort1 = parse.cftable_entry.io.win[0].base; |
| 551 | link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; |
| 552 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; |
| 553 | if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT)) |
| 554 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; |
| 555 | if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT)) |
| 556 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
| 557 | link->io.IOAddrLines = parse.cftable_entry.io.flags |
| 558 | & CISTPL_IO_LINES_MASK; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 559 | rc = pcmcia_request_io(link, &link->io); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 560 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 561 | dev_printk(KERN_INFO, &handle_to_dev(link), "foo"); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 562 | if (rc == CS_SUCCESS) |
| 563 | break; |
| 564 | else |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 565 | dev_printk(KERN_INFO, &handle_to_dev(link), |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 566 | "pcmcia_request_io failed 0x%x\n", rc); |
| 567 | } |
| 568 | if (rc != CS_SUCCESS) |
| 569 | goto cs_release; |
| 570 | |
| 571 | link->conf.IntType = 00000002; |
| 572 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 573 | if ((fail_rc = pcmcia_request_configuration(link,&link->conf)) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 574 | !=CS_SUCCESS) { |
| 575 | fail_fn = RequestConfiguration; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 576 | dev_printk(KERN_INFO, &handle_to_dev(link), |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 577 | "pcmcia_request_configuration failed 0x%x\n", |
| 578 | fail_rc); |
| 579 | goto cs_release; |
| 580 | } |
| 581 | |
| 582 | dev = link->priv; |
| 583 | sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno); |
| 584 | dev->node.major = major; |
| 585 | dev->node.minor = devno; |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 586 | dev->node.next = &dev->node; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 587 | |
| 588 | DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno, |
| 589 | link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1); |
| 590 | DEBUGP(2, dev, "<- reader_config (succ)\n"); |
| 591 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 592 | return 0; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 593 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 594 | cs_release: |
| 595 | reader_release(link); |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 596 | return -ENODEV; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 597 | } |
| 598 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 599 | static void reader_release(struct pcmcia_device *link) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 600 | { |
| 601 | cm4040_reader_release(link->priv); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 602 | pcmcia_disable_device(link); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 603 | } |
| 604 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 605 | static int reader_probe(struct pcmcia_device *link) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 606 | { |
| 607 | struct reader_dev *dev; |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 608 | int i, ret; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 609 | |
| 610 | for (i = 0; i < CM_MAX_DEV; i++) { |
| 611 | if (dev_table[i] == NULL) |
| 612 | break; |
| 613 | } |
| 614 | |
| 615 | if (i == CM_MAX_DEV) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 616 | return -ENODEV; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 617 | |
| 618 | dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL); |
| 619 | if (dev == NULL) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 620 | return -ENOMEM; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 621 | |
| 622 | dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT; |
| 623 | dev->buffer_status = 0; |
| 624 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 625 | link->priv = dev; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 626 | dev->p_dev = link; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 627 | |
| 628 | link->conf.IntType = INT_MEMORY_AND_IO; |
| 629 | dev_table[i] = link; |
| 630 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 631 | init_waitqueue_head(&dev->devq); |
| 632 | init_waitqueue_head(&dev->poll_wait); |
| 633 | init_waitqueue_head(&dev->read_wait); |
| 634 | init_waitqueue_head(&dev->write_wait); |
| 635 | init_timer(&dev->poll_timer); |
| 636 | dev->poll_timer.function = &cm4040_do_poll; |
| 637 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 638 | ret = reader_config(link, i); |
| 639 | if (ret) |
| 640 | return ret; |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 641 | |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 642 | class_device_create(cmx_class, NULL, MKDEV(major, i), NULL, |
| 643 | "cmx%d", i); |
| 644 | |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 645 | return 0; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 646 | } |
| 647 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 648 | static void reader_detach(struct pcmcia_device *link) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 649 | { |
| 650 | struct reader_dev *dev = link->priv; |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 651 | int devno; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 652 | |
| 653 | /* find device */ |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 654 | for (devno = 0; devno < CM_MAX_DEV; devno++) { |
| 655 | if (dev_table[devno] == link) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 656 | break; |
| 657 | } |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 658 | if (devno == CM_MAX_DEV) |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 659 | return; |
| 660 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 661 | reader_release(link); |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 662 | |
| 663 | dev_table[devno] = NULL; |
| 664 | kfree(dev); |
| 665 | |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 666 | class_device_destroy(cmx_class, MKDEV(major, devno)); |
| 667 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 668 | return; |
| 669 | } |
| 670 | |
Arjan van de Ven | 62322d2 | 2006-07-03 00:24:21 -0700 | [diff] [blame] | 671 | static const struct file_operations reader_fops = { |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 672 | .owner = THIS_MODULE, |
| 673 | .read = cm4040_read, |
| 674 | .write = cm4040_write, |
| 675 | .open = cm4040_open, |
| 676 | .release = cm4040_close, |
| 677 | .poll = cm4040_poll, |
| 678 | }; |
| 679 | |
| 680 | static struct pcmcia_device_id cm4040_ids[] = { |
| 681 | PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200), |
| 682 | PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040", |
| 683 | 0xE32CDD8C, 0x8F23318B), |
| 684 | PCMCIA_DEVICE_NULL, |
| 685 | }; |
| 686 | MODULE_DEVICE_TABLE(pcmcia, cm4040_ids); |
| 687 | |
| 688 | static struct pcmcia_driver reader_driver = { |
| 689 | .owner = THIS_MODULE, |
| 690 | .drv = { |
| 691 | .name = "cm4040_cs", |
| 692 | }, |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 693 | .probe = reader_probe, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 694 | .remove = reader_detach, |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 695 | .id_table = cm4040_ids, |
| 696 | }; |
| 697 | |
| 698 | static int __init cm4040_init(void) |
| 699 | { |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 700 | int rc; |
| 701 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 702 | printk(KERN_INFO "%s\n", version); |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 703 | cmx_class = class_create(THIS_MODULE, "cardman_4040"); |
Akinobu Mita | 5eb5fc9 | 2006-10-17 15:25:59 +0900 | [diff] [blame] | 704 | if (IS_ERR(cmx_class)) |
| 705 | return PTR_ERR(cmx_class); |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 706 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 707 | major = register_chrdev(0, DEVICE_NAME, &reader_fops); |
| 708 | if (major < 0) { |
| 709 | printk(KERN_WARNING MODULE_NAME |
| 710 | ": could not get major number\n"); |
Akinobu Mita | 5eb5fc9 | 2006-10-17 15:25:59 +0900 | [diff] [blame] | 711 | return major; |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 712 | } |
Harald Welte | 7fc5b1e | 2006-05-10 13:28:52 +0200 | [diff] [blame] | 713 | |
| 714 | rc = pcmcia_register_driver(&reader_driver); |
| 715 | if (rc < 0) { |
| 716 | unregister_chrdev(major, DEVICE_NAME); |
| 717 | return rc; |
| 718 | } |
| 719 | |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 720 | return 0; |
| 721 | } |
| 722 | |
| 723 | static void __exit cm4040_exit(void) |
| 724 | { |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 725 | printk(KERN_INFO MODULE_NAME ": unloading\n"); |
| 726 | pcmcia_unregister_driver(&reader_driver); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 727 | unregister_chrdev(major, DEVICE_NAME); |
Harald Welte | 67bc620 | 2006-02-14 09:21:26 +0100 | [diff] [blame] | 728 | class_destroy(cmx_class); |
Harald Welte | 77c44ab | 2005-11-13 16:06:26 -0800 | [diff] [blame] | 729 | } |
| 730 | |
| 731 | module_init(cm4040_init); |
| 732 | module_exit(cm4040_exit); |
| 733 | MODULE_LICENSE("Dual BSD/GPL"); |