1 /* 2 * A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000" 3 * 4 * cm4000_cs.c support.linux@omnikey.com 5 * 6 * Tue Oct 23 11:32:43 GMT 2001 herp - cleaned up header files 7 * Sun Jan 20 10:11:15 MET 2002 herp - added modversion header files 8 * Thu Nov 14 16:34:11 GMT 2002 mh - added PPS functionality 9 * Tue Nov 19 16:36:27 GMT 2002 mh - added SUSPEND/RESUME functionailty 10 * Wed Jul 28 12:55:01 CEST 2004 mh - kernel 2.6 adjustments 11 * 12 * current version: 2.4.0gm4 13 * 14 * (C) 2000,2001,2002,2003,2004 Omnikey AG 15 * 16 * (C) 2005-2006 Harald Welte <laforge@gnumonks.org> 17 * - Adhere to Kernel CodingStyle 18 * - Port to 2.6.13 "new" style PCMCIA 19 * - Check for copy_{from,to}_user return values 20 * - Use nonseekable_open() 21 * - add class interface for udev device creation 22 * 23 * All rights reserved. Licensed under dual BSD/GPL license. 24 */ 25 26#include <linux/kernel.h> 27#include <linux/module.h> 28#include <linux/slab.h> 29#include <linux/init.h> 30#include <linux/fs.h> 31#include <linux/delay.h> 32#include <linux/bitrev.h> 33#include <linux/mutex.h> 34#include <linux/uaccess.h> 35#include <linux/io.h> 36 37#include <pcmcia/cistpl.h> 38#include <pcmcia/cisreg.h> 39#include <pcmcia/ciscode.h> 40#include <pcmcia/ds.h> 41 42#include <linux/cm4000_cs.h> 43 44/* #define ATR_CSUM */ 45 46#define reader_to_dev(x) (&x->p_dev->dev) 47 48/* n (debug level) is ignored */ 49/* additional debug output may be enabled by re-compiling with 50 * CM4000_DEBUG set */ 51/* #define CM4000_DEBUG */ 52#define DEBUGP(n, rdr, x, args...) do { \ 53 dev_dbg(reader_to_dev(rdr), "%s:" x, \ 54 __func__ , ## args); \ 55 } while (0) 56 57static DEFINE_MUTEX(cmm_mutex); 58 59#define T_1SEC (HZ) 60#define T_10MSEC msecs_to_jiffies(10) 61#define T_20MSEC msecs_to_jiffies(20) 62#define T_40MSEC msecs_to_jiffies(40) 63#define T_50MSEC msecs_to_jiffies(50) 64#define T_100MSEC msecs_to_jiffies(100) 65#define T_500MSEC msecs_to_jiffies(500) 66 67static void cm4000_release(struct pcmcia_device *link); 68 69static int major; /* major number we get from the kernel */ 70 71/* note: the first state has to have number 0 always */ 72 73#define M_FETCH_ATR 0 74#define M_TIMEOUT_WAIT 1 75#define M_READ_ATR_LEN 2 76#define M_READ_ATR 3 77#define M_ATR_PRESENT 4 78#define M_BAD_CARD 5 79#define M_CARDOFF 6 80 81#define LOCK_IO 0 82#define LOCK_MONITOR 1 83 84#define IS_AUTOPPS_ACT 6 85#define IS_PROCBYTE_PRESENT 7 86#define IS_INVREV 8 87#define IS_ANY_T0 9 88#define IS_ANY_T1 10 89#define IS_ATR_PRESENT 11 90#define IS_ATR_VALID 12 91#define IS_CMM_ABSENT 13 92#define IS_BAD_LENGTH 14 93#define IS_BAD_CSUM 15 94#define IS_BAD_CARD 16 95 96#define REG_FLAGS0(x) (x + 0) 97#define REG_FLAGS1(x) (x + 1) 98#define REG_NUM_BYTES(x) (x + 2) 99#define REG_BUF_ADDR(x) (x + 3) 100#define REG_BUF_DATA(x) (x + 4) 101#define REG_NUM_SEND(x) (x + 5) 102#define REG_BAUDRATE(x) (x + 6) 103#define REG_STOPBITS(x) (x + 7) 104 105struct cm4000_dev { 106 struct pcmcia_device *p_dev; 107 108 unsigned char atr[MAX_ATR]; 109 unsigned char rbuf[512]; 110 unsigned char sbuf[512]; 111 112 wait_queue_head_t devq; /* when removing cardman must not be 113 zeroed! */ 114 115 wait_queue_head_t ioq; /* if IO is locked, wait on this Q */ 116 wait_queue_head_t atrq; /* wait for ATR valid */ 117 wait_queue_head_t readq; /* used by write to wake blk.read */ 118 119 /* warning: do not move this fields. 120 * initialising to zero depends on it - see ZERO_DEV below. */ 121 unsigned char atr_csum; 122 unsigned char atr_len_retry; 123 unsigned short atr_len; 124 unsigned short rlen; /* bytes avail. after write */ 125 unsigned short rpos; /* latest read pos. write zeroes */ 126 unsigned char procbyte; /* T=0 procedure byte */ 127 unsigned char mstate; /* state of card monitor */ 128 unsigned char cwarn; /* slow down warning */ 129 unsigned char flags0; /* cardman IO-flags 0 */ 130 unsigned char flags1; /* cardman IO-flags 1 */ 131 unsigned int mdelay; /* variable monitor speeds, in jiffies */ 132 133 unsigned int baudv; /* baud value for speed */ 134 unsigned char ta1; 135 unsigned char proto; /* T=0, T=1, ... */ 136 unsigned long flags; /* lock+flags (MONITOR,IO,ATR) * for concurrent 137 access */ 138 139 unsigned char pts[4]; 140 141 struct timer_list timer; /* used to keep monitor running */ 142 int monitor_running; 143}; 144 145#define ZERO_DEV(dev) \ 146 memset(&dev->atr_csum,0, \ 147 sizeof(struct cm4000_dev) - \ 148 offsetof(struct cm4000_dev, atr_csum)) 149 150static struct pcmcia_device *dev_table[CM4000_MAX_DEV]; 151static struct class *cmm_class; 152 153/* This table doesn't use spaces after the comma between fields and thus 154 * violates CodingStyle. However, I don't really think wrapping it around will 155 * make it any clearer to read -HW */ 156static unsigned char fi_di_table[10][14] = { 157/*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */ 158/*DI */ 159/* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11}, 160/* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11}, 161/* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11}, 162/* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3}, 163/* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4}, 164/* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5}, 165/* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6}, 166/* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11}, 167/* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8}, 168/* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9} 169}; 170 171#ifndef CM4000_DEBUG 172#define xoutb outb 173#define xinb inb 174#else 175static inline void xoutb(unsigned char val, unsigned short port) 176{ 177 pr_debug("outb(val=%.2x,port=%.4x)\n", val, port); 178 outb(val, port); 179} 180static inline unsigned char xinb(unsigned short port) 181{ 182 unsigned char val; 183 184 val = inb(port); 185 pr_debug("%.2x=inb(%.4x)\n", val, port); 186 187 return val; 188} 189#endif 190 191static inline unsigned char invert_revert(unsigned char ch) 192{ 193 return bitrev8(~ch); 194} 195 196static void str_invert_revert(unsigned char *b, int len) 197{ 198 int i; 199 200 for (i = 0; i < len; i++) 201 b[i] = invert_revert(b[i]); 202} 203 204#define ATRLENCK(dev,pos) \ 205 if (pos>=dev->atr_len || pos>=MAX_ATR) \ 206 goto return_0; 207 208static unsigned int calc_baudv(unsigned char fidi) 209{ 210 unsigned int wcrcf, wbrcf, fi_rfu, di_rfu; 211 212 fi_rfu = 372; 213 di_rfu = 1; 214 215 /* FI */ 216 switch ((fidi >> 4) & 0x0F) { 217 case 0x00: 218 wcrcf = 372; 219 break; 220 case 0x01: 221 wcrcf = 372; 222 break; 223 case 0x02: 224 wcrcf = 558; 225 break; 226 case 0x03: 227 wcrcf = 744; 228 break; 229 case 0x04: 230 wcrcf = 1116; 231 break; 232 case 0x05: 233 wcrcf = 1488; 234 break; 235 case 0x06: 236 wcrcf = 1860; 237 break; 238 case 0x07: 239 wcrcf = fi_rfu; 240 break; 241 case 0x08: 242 wcrcf = fi_rfu; 243 break; 244 case 0x09: 245 wcrcf = 512; 246 break; 247 case 0x0A: 248 wcrcf = 768; 249 break; 250 case 0x0B: 251 wcrcf = 1024; 252 break; 253 case 0x0C: 254 wcrcf = 1536; 255 break; 256 case 0x0D: 257 wcrcf = 2048; 258 break; 259 default: 260 wcrcf = fi_rfu; 261 break; 262 } 263 264 /* DI */ 265 switch (fidi & 0x0F) { 266 case 0x00: 267 wbrcf = di_rfu; 268 break; 269 case 0x01: 270 wbrcf = 1; 271 break; 272 case 0x02: 273 wbrcf = 2; 274 break; 275 case 0x03: 276 wbrcf = 4; 277 break; 278 case 0x04: 279 wbrcf = 8; 280 break; 281 case 0x05: 282 wbrcf = 16; 283 break; 284 case 0x06: 285 wbrcf = 32; 286 break; 287 case 0x07: 288 wbrcf = di_rfu; 289 break; 290 case 0x08: 291 wbrcf = 12; 292 break; 293 case 0x09: 294 wbrcf = 20; 295 break; 296 default: 297 wbrcf = di_rfu; 298 break; 299 } 300 301 return (wcrcf / wbrcf); 302} 303 304static unsigned short io_read_num_rec_bytes(unsigned int iobase, 305 unsigned short *s) 306{ 307 unsigned short tmp; 308 309 tmp = *s = 0; 310 do { 311 *s = tmp; 312 tmp = inb(REG_NUM_BYTES(iobase)) | 313 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0); 314 } while (tmp != *s); 315 316 return *s; 317} 318 319static int parse_atr(struct cm4000_dev *dev) 320{ 321 unsigned char any_t1, any_t0; 322 unsigned char ch, ifno; 323 int ix, done; 324 325 DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len); 326 327 if (dev->atr_len < 3) { 328 DEBUGP(5, dev, "parse_atr: atr_len < 3\n"); 329 return 0; 330 } 331 332 if (dev->atr[0] == 0x3f) 333 set_bit(IS_INVREV, &dev->flags); 334 else 335 clear_bit(IS_INVREV, &dev->flags); 336 ix = 1; 337 ifno = 1; 338 ch = dev->atr[1]; 339 dev->proto = 0; /* XXX PROTO */ 340 any_t1 = any_t0 = done = 0; 341 dev->ta1 = 0x11; /* defaults to 9600 baud */ 342 do { 343 if (ifno == 1 && (ch & 0x10)) { 344 /* read first interface byte and TA1 is present */ 345 dev->ta1 = dev->atr[2]; 346 DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1); 347 ifno++; 348 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */ 349 dev->ta1 = 0x11; 350 ifno++; 351 } 352 353 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0); 354 ix += ((ch & 0x10) >> 4) /* no of int.face chars */ 355 +((ch & 0x20) >> 5) 356 + ((ch & 0x40) >> 6) 357 + ((ch & 0x80) >> 7); 358 /* ATRLENCK(dev,ix); */ 359 if (ch & 0x80) { /* TDi */ 360 ch = dev->atr[ix]; 361 if ((ch & 0x0f)) { 362 any_t1 = 1; 363 DEBUGP(5, dev, "card is capable of T=1\n"); 364 } else { 365 any_t0 = 1; 366 DEBUGP(5, dev, "card is capable of T=0\n"); 367 } 368 } else 369 done = 1; 370 } while (!done); 371 372 DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n", 373 ix, dev->atr[1] & 15, any_t1); 374 if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) { 375 DEBUGP(5, dev, "length error\n"); 376 return 0; 377 } 378 if (any_t0) 379 set_bit(IS_ANY_T0, &dev->flags); 380 381 if (any_t1) { /* compute csum */ 382 dev->atr_csum = 0; 383#ifdef ATR_CSUM 384 for (i = 1; i < dev->atr_len; i++) 385 dev->atr_csum ^= dev->atr[i]; 386 if (dev->atr_csum) { 387 set_bit(IS_BAD_CSUM, &dev->flags); 388 DEBUGP(5, dev, "bad checksum\n"); 389 goto return_0; 390 } 391#endif 392 if (any_t0 == 0) 393 dev->proto = 1; /* XXX PROTO */ 394 set_bit(IS_ANY_T1, &dev->flags); 395 } 396 397 return 1; 398} 399 400struct card_fixup { 401 char atr[12]; 402 u_int8_t atr_len; 403 u_int8_t stopbits; 404}; 405 406static struct card_fixup card_fixups[] = { 407 { /* ACOS */ 408 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 }, 409 .atr_len = 7, 410 .stopbits = 0x03, 411 }, 412 { /* Motorola */ 413 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07, 414 0x41, 0x81, 0x81 }, 415 .atr_len = 11, 416 .stopbits = 0x04, 417 }, 418}; 419 420static void set_cardparameter(struct cm4000_dev *dev) 421{ 422 int i; 423 unsigned int iobase = dev->p_dev->resource[0]->start; 424 u_int8_t stopbits = 0x02; /* ISO default */ 425 426 DEBUGP(3, dev, "-> set_cardparameter\n"); 427 428 dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8); 429 xoutb(dev->flags1, REG_FLAGS1(iobase)); 430 DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1); 431 432 /* set baudrate */ 433 xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase)); 434 435 DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv, 436 ((dev->baudv - 1) & 0xFF)); 437 438 /* set stopbits */ 439 for (i = 0; i < ARRAY_SIZE(card_fixups); i++) { 440 if (!memcmp(dev->atr, card_fixups[i].atr, 441 card_fixups[i].atr_len)) 442 stopbits = card_fixups[i].stopbits; 443 } 444 xoutb(stopbits, REG_STOPBITS(iobase)); 445 446 DEBUGP(3, dev, "<- set_cardparameter\n"); 447} 448 449static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq) 450{ 451 452 unsigned long tmp, i; 453 unsigned short num_bytes_read; 454 unsigned char pts_reply[4]; 455 ssize_t rc; 456 unsigned int iobase = dev->p_dev->resource[0]->start; 457 458 rc = 0; 459 460 DEBUGP(3, dev, "-> set_protocol\n"); 461 DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, " 462 "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, " 463 "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol, 464 (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2, 465 ptsreq->pts3); 466 467 /* Fill PTS structure */ 468 dev->pts[0] = 0xff; 469 dev->pts[1] = 0x00; 470 tmp = ptsreq->protocol; 471 while ((tmp = (tmp >> 1)) > 0) 472 dev->pts[1]++; 473 dev->proto = dev->pts[1]; /* Set new protocol */ 474 dev->pts[1] = (0x01 << 4) | (dev->pts[1]); 475 476 /* Correct Fi/Di according to CM4000 Fi/Di table */ 477 DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1); 478 /* set Fi/Di according to ATR TA(1) */ 479 dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F]; 480 481 /* Calculate PCK character */ 482 dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2]; 483 484 DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n", 485 dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]); 486 487 /* check card convention */ 488 if (test_bit(IS_INVREV, &dev->flags)) 489 str_invert_revert(dev->pts, 4); 490 491 /* reset SM */ 492 xoutb(0x80, REG_FLAGS0(iobase)); 493 494 /* Enable access to the message buffer */ 495 DEBUGP(5, dev, "Enable access to the messages buffer\n"); 496 dev->flags1 = 0x20 /* T_Active */ 497 | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */ 498 | ((dev->baudv >> 8) & 0x01); /* MSB-baud */ 499 xoutb(dev->flags1, REG_FLAGS1(iobase)); 500 501 DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n", 502 dev->flags1); 503 504 /* write challenge to the buffer */ 505 DEBUGP(5, dev, "Write challenge to buffer: "); 506 for (i = 0; i < 4; i++) { 507 xoutb(i, REG_BUF_ADDR(iobase)); 508 xoutb(dev->pts[i], REG_BUF_DATA(iobase)); /* buf data */ 509#ifdef CM4000_DEBUG 510 pr_debug("0x%.2x ", dev->pts[i]); 511 } 512 pr_debug("\n"); 513#else 514 } 515#endif 516 517 /* set number of bytes to write */ 518 DEBUGP(5, dev, "Set number of bytes to write\n"); 519 xoutb(0x04, REG_NUM_SEND(iobase)); 520 521 /* Trigger CARDMAN CONTROLLER */ 522 xoutb(0x50, REG_FLAGS0(iobase)); 523 524 /* Monitor progress */ 525 /* wait for xmit done */ 526 DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n"); 527 528 for (i = 0; i < 100; i++) { 529 if (inb(REG_FLAGS0(iobase)) & 0x08) { 530 DEBUGP(5, dev, "NumRecBytes is valid\n"); 531 break; 532 } 533 mdelay(10); 534 } 535 if (i == 100) { 536 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting " 537 "valid\n"); 538 rc = -EIO; 539 goto exit_setprotocol; 540 } 541 542 DEBUGP(5, dev, "Reading NumRecBytes\n"); 543 for (i = 0; i < 100; i++) { 544 io_read_num_rec_bytes(iobase, &num_bytes_read); 545 if (num_bytes_read >= 4) { 546 DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read); 547 break; 548 } 549 mdelay(10); 550 } 551 552 /* check whether it is a short PTS reply? */ 553 if (num_bytes_read == 3) 554 i = 0; 555 556 if (i == 100) { 557 DEBUGP(5, dev, "Timeout reading num_bytes_read\n"); 558 rc = -EIO; 559 goto exit_setprotocol; 560 } 561 562 DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n"); 563 xoutb(0x80, REG_FLAGS0(iobase)); 564 565 /* Read PPS reply */ 566 DEBUGP(5, dev, "Read PPS reply\n"); 567 for (i = 0; i < num_bytes_read; i++) { 568 xoutb(i, REG_BUF_ADDR(iobase)); 569 pts_reply[i] = inb(REG_BUF_DATA(iobase)); 570 } 571 572#ifdef CM4000_DEBUG 573 DEBUGP(2, dev, "PTSreply: "); 574 for (i = 0; i < num_bytes_read; i++) { 575 pr_debug("0x%.2x ", pts_reply[i]); 576 } 577 pr_debug("\n"); 578#endif /* CM4000_DEBUG */ 579 580 DEBUGP(5, dev, "Clear Tactive in Flags1\n"); 581 xoutb(0x20, REG_FLAGS1(iobase)); 582 583 /* Compare ptsreq and ptsreply */ 584 if ((dev->pts[0] == pts_reply[0]) && 585 (dev->pts[1] == pts_reply[1]) && 586 (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) { 587 /* setcardparameter according to PPS */ 588 dev->baudv = calc_baudv(dev->pts[2]); 589 set_cardparameter(dev); 590 } else if ((dev->pts[0] == pts_reply[0]) && 591 ((dev->pts[1] & 0xef) == pts_reply[1]) && 592 ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) { 593 /* short PTS reply, set card parameter to default values */ 594 dev->baudv = calc_baudv(0x11); 595 set_cardparameter(dev); 596 } else 597 rc = -EIO; 598 599exit_setprotocol: 600 DEBUGP(3, dev, "<- set_protocol\n"); 601 return rc; 602} 603 604static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev) 605{ 606 607 /* note: statemachine is assumed to be reset */ 608 if (inb(REG_FLAGS0(iobase)) & 8) { 609 clear_bit(IS_ATR_VALID, &dev->flags); 610 set_bit(IS_CMM_ABSENT, &dev->flags); 611 return 0; /* detect CMM = 1 -> failure */ 612 } 613 /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */ 614 xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase)); 615 if ((inb(REG_FLAGS0(iobase)) & 8) == 0) { 616 clear_bit(IS_ATR_VALID, &dev->flags); 617 set_bit(IS_CMM_ABSENT, &dev->flags); 618 return 0; /* detect CMM=0 -> failure */ 619 } 620 /* clear detectCMM again by restoring original flags1 */ 621 xoutb(dev->flags1, REG_FLAGS1(iobase)); 622 return 1; 623} 624 625static void terminate_monitor(struct cm4000_dev *dev) 626{ 627 628 /* tell the monitor to stop and wait until 629 * it terminates. 630 */ 631 DEBUGP(3, dev, "-> terminate_monitor\n"); 632 wait_event_interruptible(dev->devq, 633 test_and_set_bit(LOCK_MONITOR, 634 (void *)&dev->flags)); 635 636 /* now, LOCK_MONITOR has been set. 637 * allow a last cycle in the monitor. 638 * the monitor will indicate that it has 639 * finished by clearing this bit. 640 */ 641 DEBUGP(5, dev, "Now allow last cycle of monitor!\n"); 642 while (test_bit(LOCK_MONITOR, (void *)&dev->flags)) 643 msleep(25); 644 645 DEBUGP(5, dev, "Delete timer\n"); 646 del_timer_sync(&dev->timer); 647#ifdef CM4000_DEBUG 648 dev->monitor_running = 0; 649#endif 650 651 DEBUGP(3, dev, "<- terminate_monitor\n"); 652} 653 654/* 655 * monitor the card every 50msec. as a side-effect, retrieve the 656 * atr once a card is inserted. another side-effect of retrieving the 657 * atr is that the card will be powered on, so there is no need to 658 * power on the card explictely from the application: the driver 659 * is already doing that for you. 660 */ 661 662static void monitor_card(unsigned long p) 663{ 664 struct cm4000_dev *dev = (struct cm4000_dev *) p; 665 unsigned int iobase = dev->p_dev->resource[0]->start; 666 unsigned short s; 667 struct ptsreq ptsreq; 668 int i, atrc; 669 670 DEBUGP(7, dev, "-> monitor_card\n"); 671 672 /* if someone has set the lock for us: we're done! */ 673 if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) { 674 DEBUGP(4, dev, "About to stop monitor\n"); 675 /* no */ 676 dev->rlen = 677 dev->rpos = 678 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0; 679 dev->mstate = M_FETCH_ATR; 680 clear_bit(LOCK_MONITOR, &dev->flags); 681 /* close et al. are sleeping on devq, so wake it */ 682 wake_up_interruptible(&dev->devq); 683 DEBUGP(2, dev, "<- monitor_card (we are done now)\n"); 684 return; 685 } 686 687 /* try to lock io: if it is already locked, just add another timer */ 688 if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) { 689 DEBUGP(4, dev, "Couldn't get IO lock\n"); 690 goto return_with_timer; 691 } 692 693 /* is a card/a reader inserted at all ? */ 694 dev->flags0 = xinb(REG_FLAGS0(iobase)); 695 DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0); 696 DEBUGP(7, dev, "smartcard present: %s\n", 697 dev->flags0 & 1 ? "yes" : "no"); 698 DEBUGP(7, dev, "cardman present: %s\n", 699 dev->flags0 == 0xff ? "no" : "yes"); 700 701 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */ 702 || dev->flags0 == 0xff) { /* no cardman inserted */ 703 /* no */ 704 dev->rlen = 705 dev->rpos = 706 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0; 707 dev->mstate = M_FETCH_ATR; 708 709 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */ 710 711 if (dev->flags0 == 0xff) { 712 DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n"); 713 set_bit(IS_CMM_ABSENT, &dev->flags); 714 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) { 715 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit " 716 "(card is removed)\n"); 717 clear_bit(IS_CMM_ABSENT, &dev->flags); 718 } 719 720 goto release_io; 721 } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) { 722 /* cardman and card present but cardman was absent before 723 * (after suspend with inserted card) */ 724 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n"); 725 clear_bit(IS_CMM_ABSENT, &dev->flags); 726 } 727 728 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) { 729 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n"); 730 goto release_io; 731 } 732 733 switch (dev->mstate) { 734 unsigned char flags0; 735 case M_CARDOFF: 736 DEBUGP(4, dev, "M_CARDOFF\n"); 737 flags0 = inb(REG_FLAGS0(iobase)); 738 if (flags0 & 0x02) { 739 /* wait until Flags0 indicate power is off */ 740 dev->mdelay = T_10MSEC; 741 } else { 742 /* Flags0 indicate power off and no card inserted now; 743 * Reset CARDMAN CONTROLLER */ 744 xoutb(0x80, REG_FLAGS0(iobase)); 745 746 /* prepare for fetching ATR again: after card off ATR 747 * is read again automatically */ 748 dev->rlen = 749 dev->rpos = 750 dev->atr_csum = 751 dev->atr_len_retry = dev->cwarn = 0; 752 dev->mstate = M_FETCH_ATR; 753 754 /* minimal gap between CARDOFF and read ATR is 50msec */ 755 dev->mdelay = T_50MSEC; 756 } 757 break; 758 case M_FETCH_ATR: 759 DEBUGP(4, dev, "M_FETCH_ATR\n"); 760 xoutb(0x80, REG_FLAGS0(iobase)); 761 DEBUGP(4, dev, "Reset BAUDV to 9600\n"); 762 dev->baudv = 0x173; /* 9600 */ 763 xoutb(0x02, REG_STOPBITS(iobase)); /* stopbits=2 */ 764 xoutb(0x73, REG_BAUDRATE(iobase)); /* baud value */ 765 xoutb(0x21, REG_FLAGS1(iobase)); /* T_Active=1, baud 766 value */ 767 /* warm start vs. power on: */ 768 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase)); 769 dev->mdelay = T_40MSEC; 770 dev->mstate = M_TIMEOUT_WAIT; 771 break; 772 case M_TIMEOUT_WAIT: 773 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n"); 774 /* numRecBytes */ 775 io_read_num_rec_bytes(iobase, &dev->atr_len); 776 dev->mdelay = T_10MSEC; 777 dev->mstate = M_READ_ATR_LEN; 778 break; 779 case M_READ_ATR_LEN: 780 DEBUGP(4, dev, "M_READ_ATR_LEN\n"); 781 /* infinite loop possible, since there is no timeout */ 782 783#define MAX_ATR_LEN_RETRY 100 784 785 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) { 786 if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) { /* + XX msec */ 787 dev->mdelay = T_10MSEC; 788 dev->mstate = M_READ_ATR; 789 } 790 } else { 791 dev->atr_len = s; 792 dev->atr_len_retry = 0; /* set new timeout */ 793 } 794 795 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len); 796 break; 797 case M_READ_ATR: 798 DEBUGP(4, dev, "M_READ_ATR\n"); 799 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */ 800 for (i = 0; i < dev->atr_len; i++) { 801 xoutb(i, REG_BUF_ADDR(iobase)); 802 dev->atr[i] = inb(REG_BUF_DATA(iobase)); 803 } 804 /* Deactivate T_Active flags */ 805 DEBUGP(4, dev, "Deactivate T_Active flags\n"); 806 dev->flags1 = 0x01; 807 xoutb(dev->flags1, REG_FLAGS1(iobase)); 808 809 /* atr is present (which doesn't mean it's valid) */ 810 set_bit(IS_ATR_PRESENT, &dev->flags); 811 if (dev->atr[0] == 0x03) 812 str_invert_revert(dev->atr, dev->atr_len); 813 atrc = parse_atr(dev); 814 if (atrc == 0) { /* atr invalid */ 815 dev->mdelay = 0; 816 dev->mstate = M_BAD_CARD; 817 } else { 818 dev->mdelay = T_50MSEC; 819 dev->mstate = M_ATR_PRESENT; 820 set_bit(IS_ATR_VALID, &dev->flags); 821 } 822 823 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) { 824 DEBUGP(4, dev, "monitor_card: ATR valid\n"); 825 /* if ta1 == 0x11, no PPS necessary (default values) */ 826 /* do not do PPS with multi protocol cards */ 827 if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) && 828 (dev->ta1 != 0x11) && 829 !(test_bit(IS_ANY_T0, &dev->flags) && 830 test_bit(IS_ANY_T1, &dev->flags))) { 831 DEBUGP(4, dev, "Perform AUTOPPS\n"); 832 set_bit(IS_AUTOPPS_ACT, &dev->flags); 833 ptsreq.protocol = (0x01 << dev->proto); 834 ptsreq.flags = 0x01; 835 ptsreq.pts1 = 0x00; 836 ptsreq.pts2 = 0x00; 837 ptsreq.pts3 = 0x00; 838 if (set_protocol(dev, &ptsreq) == 0) { 839 DEBUGP(4, dev, "AUTOPPS ret SUCC\n"); 840 clear_bit(IS_AUTOPPS_ACT, &dev->flags); 841 wake_up_interruptible(&dev->atrq); 842 } else { 843 DEBUGP(4, dev, "AUTOPPS failed: " 844 "repower using defaults\n"); 845 /* prepare for repowering */ 846 clear_bit(IS_ATR_PRESENT, &dev->flags); 847 clear_bit(IS_ATR_VALID, &dev->flags); 848 dev->rlen = 849 dev->rpos = 850 dev->atr_csum = 851 dev->atr_len_retry = dev->cwarn = 0; 852 dev->mstate = M_FETCH_ATR; 853 854 dev->mdelay = T_50MSEC; 855 } 856 } else { 857 /* for cards which use slightly different 858 * params (extra guard time) */ 859 set_cardparameter(dev); 860 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1) 861 DEBUGP(4, dev, "AUTOPPS already active " 862 "2nd try:use default values\n"); 863 if (dev->ta1 == 0x11) 864 DEBUGP(4, dev, "No AUTOPPS necessary " 865 "TA(1)==0x11\n"); 866 if (test_bit(IS_ANY_T0, &dev->flags) 867 && test_bit(IS_ANY_T1, &dev->flags)) 868 DEBUGP(4, dev, "Do NOT perform AUTOPPS " 869 "with multiprotocol cards\n"); 870 clear_bit(IS_AUTOPPS_ACT, &dev->flags); 871 wake_up_interruptible(&dev->atrq); 872 } 873 } else { 874 DEBUGP(4, dev, "ATR invalid\n"); 875 wake_up_interruptible(&dev->atrq); 876 } 877 break; 878 case M_BAD_CARD: 879 DEBUGP(4, dev, "M_BAD_CARD\n"); 880 /* slow down warning, but prompt immediately after insertion */ 881 if (dev->cwarn == 0 || dev->cwarn == 10) { 882 set_bit(IS_BAD_CARD, &dev->flags); 883 dev_warn(&dev->p_dev->dev, MODULE_NAME ": "); 884 if (test_bit(IS_BAD_CSUM, &dev->flags)) { 885 DEBUGP(4, dev, "ATR checksum (0x%.2x, should " 886 "be zero) failed\n", dev->atr_csum); 887 } 888#ifdef CM4000_DEBUG 889 else if (test_bit(IS_BAD_LENGTH, &dev->flags)) { 890 DEBUGP(4, dev, "ATR length error\n"); 891 } else { 892 DEBUGP(4, dev, "card damaged or wrong way " 893 "inserted\n"); 894 } 895#endif 896 dev->cwarn = 0; 897 wake_up_interruptible(&dev->atrq); /* wake open */ 898 } 899 dev->cwarn++; 900 dev->mdelay = T_100MSEC; 901 dev->mstate = M_FETCH_ATR; 902 break; 903 default: 904 DEBUGP(7, dev, "Unknown action\n"); 905 break; /* nothing */ 906 } 907 908release_io: 909 DEBUGP(7, dev, "release_io\n"); 910 clear_bit(LOCK_IO, &dev->flags); 911 wake_up_interruptible(&dev->ioq); /* whoever needs IO */ 912 913return_with_timer: 914 DEBUGP(7, dev, "<- monitor_card (returns with timer)\n"); 915 mod_timer(&dev->timer, jiffies + dev->mdelay); 916 clear_bit(LOCK_MONITOR, &dev->flags); 917} 918 919/* Interface to userland (file_operations) */ 920 921static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count, 922 loff_t *ppos) 923{ 924 struct cm4000_dev *dev = filp->private_data; 925 unsigned int iobase = dev->p_dev->resource[0]->start; 926 ssize_t rc; 927 int i, j, k; 928 929 DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid); 930 931 if (count == 0) /* according to manpage */ 932 return 0; 933 934 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */ 935 test_bit(IS_CMM_ABSENT, &dev->flags)) 936 return -ENODEV; 937 938 if (test_bit(IS_BAD_CSUM, &dev->flags)) 939 return -EIO; 940 941 /* also see the note about this in cmm_write */ 942 if (wait_event_interruptible 943 (dev->atrq, 944 ((filp->f_flags & O_NONBLOCK) 945 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) { 946 if (filp->f_flags & O_NONBLOCK) 947 return -EAGAIN; 948 return -ERESTARTSYS; 949 } 950 951 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) 952 return -EIO; 953 954 /* this one implements blocking IO */ 955 if (wait_event_interruptible 956 (dev->readq, 957 ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) { 958 if (filp->f_flags & O_NONBLOCK) 959 return -EAGAIN; 960 return -ERESTARTSYS; 961 } 962 963 /* lock io */ 964 if (wait_event_interruptible 965 (dev->ioq, 966 ((filp->f_flags & O_NONBLOCK) 967 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) { 968 if (filp->f_flags & O_NONBLOCK) 969 return -EAGAIN; 970 return -ERESTARTSYS; 971 } 972 973 rc = 0; 974 dev->flags0 = inb(REG_FLAGS0(iobase)); 975 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */ 976 || dev->flags0 == 0xff) { /* no cardman inserted */ 977 clear_bit(IS_ATR_VALID, &dev->flags); 978 if (dev->flags0 & 1) { 979 set_bit(IS_CMM_ABSENT, &dev->flags); 980 rc = -ENODEV; 981 } else { 982 rc = -EIO; 983 } 984 goto release_io; 985 } 986 987 DEBUGP(4, dev, "begin read answer\n"); 988 j = min(count, (size_t)(dev->rlen - dev->rpos)); 989 k = dev->rpos; 990 if (k + j > 255) 991 j = 256 - k; 992 DEBUGP(4, dev, "read1 j=%d\n", j); 993 for (i = 0; i < j; i++) { 994 xoutb(k++, REG_BUF_ADDR(iobase)); 995 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase)); 996 } 997 j = min(count, (size_t)(dev->rlen - dev->rpos)); 998 if (k + j > 255) { 999 DEBUGP(4, dev, "read2 j=%d\n", j); 1000 dev->flags1 |= 0x10; /* MSB buf addr set */ 1001 xoutb(dev->flags1, REG_FLAGS1(iobase)); 1002 for (; i < j; i++) { 1003 xoutb(k++, REG_BUF_ADDR(iobase)); 1004 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase)); 1005 } 1006 } 1007 1008 if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) { 1009 DEBUGP(4, dev, "T=0 and count > buffer\n"); 1010 dev->rbuf[i] = dev->rbuf[i - 1]; 1011 dev->rbuf[i - 1] = dev->procbyte; 1012 j++; 1013 } 1014 count = j; 1015 1016 dev->rpos = dev->rlen + 1; 1017 1018 /* Clear T1Active */ 1019 DEBUGP(4, dev, "Clear T1Active\n"); 1020 dev->flags1 &= 0xdf; 1021 xoutb(dev->flags1, REG_FLAGS1(iobase)); 1022 1023 xoutb(0, REG_FLAGS1(iobase)); /* clear detectCMM */ 1024 /* last check before exit */ 1025 if (!io_detect_cm4000(iobase, dev)) { 1026 rc = -ENODEV; 1027 goto release_io; 1028 } 1029 1030 if (test_bit(IS_INVREV, &dev->flags) && count > 0) 1031 str_invert_revert(dev->rbuf, count); 1032 1033 if (copy_to_user(buf, dev->rbuf, count)) 1034 rc = -EFAULT; 1035 1036release_io: 1037 clear_bit(LOCK_IO, &dev->flags); 1038 wake_up_interruptible(&dev->ioq); 1039 1040 DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n", 1041 (rc < 0 ? rc : count)); 1042 return rc < 0 ? rc : count; 1043} 1044 1045static ssize_t cmm_write(struct file *filp, const char __user *buf, 1046 size_t count, loff_t *ppos) 1047{ 1048 struct cm4000_dev *dev = filp->private_data; 1049 unsigned int iobase = dev->p_dev->resource[0]->start; 1050 unsigned short s; 1051 unsigned char tmp; 1052 unsigned char infolen; 1053 unsigned char sendT0; 1054 unsigned short nsend; 1055 unsigned short nr; 1056 ssize_t rc; 1057 int i; 1058 1059 DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid); 1060 1061 if (count == 0) /* according to manpage */ 1062 return 0; 1063 1064 if (dev->proto == 0 && count < 4) { 1065 /* T0 must have at least 4 bytes */ 1066 DEBUGP(4, dev, "T0 short write\n"); 1067 return -EIO; 1068 } 1069 1070 nr = count & 0x1ff; /* max bytes to write */ 1071 1072 sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0; 1073 1074 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */ 1075 test_bit(IS_CMM_ABSENT, &dev->flags)) 1076 return -ENODEV; 1077 1078 if (test_bit(IS_BAD_CSUM, &dev->flags)) { 1079 DEBUGP(4, dev, "bad csum\n"); 1080 return -EIO; 1081 } 1082 1083 /* 1084 * wait for atr to become valid. 1085 * note: it is important to lock this code. if we dont, the monitor 1086 * could be run between test_bit and the call to sleep on the 1087 * atr-queue. if *then* the monitor detects atr valid, it will wake up 1088 * any process on the atr-queue, *but* since we have been interrupted, 1089 * we do not yet sleep on this queue. this would result in a missed 1090 * wake_up and the calling process would sleep forever (until 1091 * interrupted). also, do *not* restore_flags before sleep_on, because 1092 * this could result in the same situation! 1093 */ 1094 if (wait_event_interruptible 1095 (dev->atrq, 1096 ((filp->f_flags & O_NONBLOCK) 1097 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) { 1098 if (filp->f_flags & O_NONBLOCK) 1099 return -EAGAIN; 1100 return -ERESTARTSYS; 1101 } 1102 1103 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */ 1104 DEBUGP(4, dev, "invalid ATR\n"); 1105 return -EIO; 1106 } 1107 1108 /* lock io */ 1109 if (wait_event_interruptible 1110 (dev->ioq, 1111 ((filp->f_flags & O_NONBLOCK) 1112 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) { 1113 if (filp->f_flags & O_NONBLOCK) 1114 return -EAGAIN; 1115 return -ERESTARTSYS; 1116 } 1117 1118 if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count))) 1119 return -EFAULT; 1120 1121 rc = 0; 1122 dev->flags0 = inb(REG_FLAGS0(iobase)); 1123 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */ 1124 || dev->flags0 == 0xff) { /* no cardman inserted */ 1125 clear_bit(IS_ATR_VALID, &dev->flags); 1126 if (dev->flags0 & 1) { 1127 set_bit(IS_CMM_ABSENT, &dev->flags); 1128 rc = -ENODEV; 1129 } else { 1130 DEBUGP(4, dev, "IO error\n"); 1131 rc = -EIO; 1132 } 1133 goto release_io; 1134 } 1135 1136 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */ 1137 1138 if (!io_detect_cm4000(iobase, dev)) { 1139 rc = -ENODEV; 1140 goto release_io; 1141 } 1142 1143 /* reflect T=0 send/read mode in flags1 */ 1144 dev->flags1 |= (sendT0); 1145 1146 set_cardparameter(dev); 1147 1148 /* dummy read, reset flag procedure received */ 1149 tmp = inb(REG_FLAGS1(iobase)); 1150 1151 dev->flags1 = 0x20 /* T_Active */ 1152 | (sendT0) 1153 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity */ 1154 | (((dev->baudv - 1) & 0x0100) >> 8); /* MSB-Baud */ 1155 DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1); 1156 xoutb(dev->flags1, REG_FLAGS1(iobase)); 1157 1158 /* xmit data */ 1159 DEBUGP(4, dev, "Xmit data\n"); 1160 for (i = 0; i < nr; i++) { 1161 if (i >= 256) { 1162 dev->flags1 = 0x20 /* T_Active */ 1163 | (sendT0) /* SendT0 */ 1164 /* inverse parity: */ 1165 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0) 1166 | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */ 1167 | 0x10; /* set address high */ 1168 DEBUGP(4, dev, "dev->flags = 0x%.2x - set address " 1169 "high\n", dev->flags1); 1170 xoutb(dev->flags1, REG_FLAGS1(iobase)); 1171 } 1172 if (test_bit(IS_INVREV, &dev->flags)) { 1173 DEBUGP(4, dev, "Apply inverse convention for 0x%.2x " 1174 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i], 1175 invert_revert(dev->sbuf[i])); 1176 xoutb(i, REG_BUF_ADDR(iobase)); 1177 xoutb(invert_revert(dev->sbuf[i]), 1178 REG_BUF_DATA(iobase)); 1179 } else { 1180 xoutb(i, REG_BUF_ADDR(iobase)); 1181 xoutb(dev->sbuf[i], REG_BUF_DATA(iobase)); 1182 } 1183 } 1184 DEBUGP(4, dev, "Xmit done\n"); 1185 1186 if (dev->proto == 0) { 1187 /* T=0 proto: 0 byte reply */ 1188 if (nr == 4) { 1189 DEBUGP(4, dev, "T=0 assumes 0 byte reply\n"); 1190 xoutb(i, REG_BUF_ADDR(iobase)); 1191 if (test_bit(IS_INVREV, &dev->flags)) 1192 xoutb(0xff, REG_BUF_DATA(iobase)); 1193 else 1194 xoutb(0x00, REG_BUF_DATA(iobase)); 1195 } 1196 1197 /* numSendBytes */ 1198 if (sendT0) 1199 nsend = nr; 1200 else { 1201 if (nr == 4) 1202 nsend = 5; 1203 else { 1204 nsend = 5 + (unsigned char)dev->sbuf[4]; 1205 if (dev->sbuf[4] == 0) 1206 nsend += 0x100; 1207 } 1208 } 1209 } else 1210 nsend = nr; 1211 1212 /* T0: output procedure byte */ 1213 if (test_bit(IS_INVREV, &dev->flags)) { 1214 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) " 1215 "0x%.2x\n", invert_revert(dev->sbuf[1])); 1216 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase)); 1217 } else { 1218 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]); 1219 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase)); 1220 } 1221 1222 DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n", 1223 (unsigned char)(nsend & 0xff)); 1224 xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase)); 1225 1226 DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n", 1227 0x40 /* SM_Active */ 1228 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */ 1229 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */ 1230 |(nsend & 0x100) >> 8 /* MSB numSendBytes */ ); 1231 xoutb(0x40 /* SM_Active */ 1232 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */ 1233 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */ 1234 |(nsend & 0x100) >> 8, /* MSB numSendBytes */ 1235 REG_FLAGS0(iobase)); 1236 1237 /* wait for xmit done */ 1238 if (dev->proto == 1) { 1239 DEBUGP(4, dev, "Wait for xmit done\n"); 1240 for (i = 0; i < 1000; i++) { 1241 if (inb(REG_FLAGS0(iobase)) & 0x08) 1242 break; 1243 msleep_interruptible(10); 1244 } 1245 if (i == 1000) { 1246 DEBUGP(4, dev, "timeout waiting for xmit done\n"); 1247 rc = -EIO; 1248 goto release_io; 1249 } 1250 } 1251 1252 /* T=1: wait for infoLen */ 1253 1254 infolen = 0; 1255 if (dev->proto) { 1256 /* wait until infoLen is valid */ 1257 for (i = 0; i < 6000; i++) { /* max waiting time of 1 min */ 1258 io_read_num_rec_bytes(iobase, &s); 1259 if (s >= 3) { 1260 infolen = inb(REG_FLAGS1(iobase)); 1261 DEBUGP(4, dev, "infolen=%d\n", infolen); 1262 break; 1263 } 1264 msleep_interruptible(10); 1265 } 1266 if (i == 6000) { 1267 DEBUGP(4, dev, "timeout waiting for infoLen\n"); 1268 rc = -EIO; 1269 goto release_io; 1270 } 1271 } else 1272 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags); 1273 1274 /* numRecBytes | bit9 of numRecytes */ 1275 io_read_num_rec_bytes(iobase, &dev->rlen); 1276 for (i = 0; i < 600; i++) { /* max waiting time of 2 sec */ 1277 if (dev->proto) { 1278 if (dev->rlen >= infolen + 4) 1279 break; 1280 } 1281 msleep_interruptible(10); 1282 /* numRecBytes | bit9 of numRecytes */ 1283 io_read_num_rec_bytes(iobase, &s); 1284 if (s > dev->rlen) { 1285 DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n"); 1286 i = 0; /* reset timeout */ 1287 dev->rlen = s; 1288 } 1289 /* T=0: we are done when numRecBytes doesn't 1290 * increment any more and NoProcedureByte 1291 * is set and numRecBytes == bytes sent + 6 1292 * (header bytes + data + 1 for sw2) 1293 * except when the card replies an error 1294 * which means, no data will be sent back. 1295 */ 1296 else if (dev->proto == 0) { 1297 if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) { 1298 /* no procedure byte received since last read */ 1299 DEBUGP(1, dev, "NoProcedure byte set\n"); 1300 /* i=0; */ 1301 } else { 1302 /* procedure byte received since last read */ 1303 DEBUGP(1, dev, "NoProcedure byte unset " 1304 "(reset timeout)\n"); 1305 dev->procbyte = inb(REG_FLAGS1(iobase)); 1306 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n", 1307 dev->procbyte); 1308 i = 0; /* resettimeout */ 1309 } 1310 if (inb(REG_FLAGS0(iobase)) & 0x08) { 1311 DEBUGP(1, dev, "T0Done flag (read reply)\n"); 1312 break; 1313 } 1314 } 1315 if (dev->proto) 1316 infolen = inb(REG_FLAGS1(iobase)); 1317 } 1318 if (i == 600) { 1319 DEBUGP(1, dev, "timeout waiting for numRecBytes\n"); 1320 rc = -EIO; 1321 goto release_io; 1322 } else { 1323 if (dev->proto == 0) { 1324 DEBUGP(1, dev, "Wait for T0Done bit to be set\n"); 1325 for (i = 0; i < 1000; i++) { 1326 if (inb(REG_FLAGS0(iobase)) & 0x08) 1327 break; 1328 msleep_interruptible(10); 1329 } 1330 if (i == 1000) { 1331 DEBUGP(1, dev, "timeout waiting for T0Done\n"); 1332 rc = -EIO; 1333 goto release_io; 1334 } 1335 1336 dev->procbyte = inb(REG_FLAGS1(iobase)); 1337 DEBUGP(4, dev, "Read procedure byte 0x%.2x\n", 1338 dev->procbyte); 1339 1340 io_read_num_rec_bytes(iobase, &dev->rlen); 1341 DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen); 1342 1343 } 1344 } 1345 /* T=1: read offset=zero, T=0: read offset=after challenge */ 1346 dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr; 1347 DEBUGP(4, dev, "dev->rlen = %i, dev->rpos = %i, nr = %i\n", 1348 dev->rlen, dev->rpos, nr); 1349 1350release_io: 1351 DEBUGP(4, dev, "Reset SM\n"); 1352 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */ 1353 1354 if (rc < 0) { 1355 DEBUGP(4, dev, "Write failed but clear T_Active\n"); 1356 dev->flags1 &= 0xdf; 1357 xoutb(dev->flags1, REG_FLAGS1(iobase)); 1358 } 1359 1360 clear_bit(LOCK_IO, &dev->flags); 1361 wake_up_interruptible(&dev->ioq); 1362 wake_up_interruptible(&dev->readq); /* tell read we have data */ 1363 1364 /* ITSEC E2: clear write buffer */ 1365 memset((char *)dev->sbuf, 0, 512); 1366 1367 /* return error or actually written bytes */ 1368 DEBUGP(2, dev, "<- cmm_write\n"); 1369 return rc < 0 ? rc : nr; 1370} 1371 1372static void start_monitor(struct cm4000_dev *dev) 1373{ 1374 DEBUGP(3, dev, "-> start_monitor\n"); 1375 if (!dev->monitor_running) { 1376 DEBUGP(5, dev, "create, init and add timer\n"); 1377 setup_timer(&dev->timer, monitor_card, (unsigned long)dev); 1378 dev->monitor_running = 1; 1379 mod_timer(&dev->timer, jiffies); 1380 } else 1381 DEBUGP(5, dev, "monitor already running\n"); 1382 DEBUGP(3, dev, "<- start_monitor\n"); 1383} 1384 1385static void stop_monitor(struct cm4000_dev *dev) 1386{ 1387 DEBUGP(3, dev, "-> stop_monitor\n"); 1388 if (dev->monitor_running) { 1389 DEBUGP(5, dev, "stopping monitor\n"); 1390 terminate_monitor(dev); 1391 /* reset monitor SM */ 1392 clear_bit(IS_ATR_VALID, &dev->flags); 1393 clear_bit(IS_ATR_PRESENT, &dev->flags); 1394 } else 1395 DEBUGP(5, dev, "monitor already stopped\n"); 1396 DEBUGP(3, dev, "<- stop_monitor\n"); 1397} 1398 1399static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1400{ 1401 struct cm4000_dev *dev = filp->private_data; 1402 unsigned int iobase = dev->p_dev->resource[0]->start; 1403 struct inode *inode = filp->f_path.dentry->d_inode; 1404 struct pcmcia_device *link; 1405 int size; 1406 int rc; 1407 void __user *argp = (void __user *)arg; 1408#ifdef CM4000_DEBUG 1409 char *ioctl_names[CM_IOC_MAXNR + 1] = { 1410 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS", 1411 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR", 1412 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF", 1413 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS", 1414 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL", 1415 }; 1416 DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode), 1417 iminor(inode), ioctl_names[_IOC_NR(cmd)]); 1418#endif 1419 1420 mutex_lock(&cmm_mutex); 1421 rc = -ENODEV; 1422 link = dev_table[iminor(inode)]; 1423 if (!pcmcia_dev_present(link)) { 1424 DEBUGP(4, dev, "DEV_OK false\n"); 1425 goto out; 1426 } 1427 1428 if (test_bit(IS_CMM_ABSENT, &dev->flags)) { 1429 DEBUGP(4, dev, "CMM_ABSENT flag set\n"); 1430 goto out; 1431 } 1432 rc = -EINVAL; 1433 1434 if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) { 1435 DEBUGP(4, dev, "ioctype mismatch\n"); 1436 goto out; 1437 } 1438 if (_IOC_NR(cmd) > CM_IOC_MAXNR) { 1439 DEBUGP(4, dev, "iocnr mismatch\n"); 1440 goto out; 1441 } 1442 size = _IOC_SIZE(cmd); 1443 rc = -EFAULT; 1444 DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n", 1445 _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd); 1446 1447 if (_IOC_DIR(cmd) & _IOC_READ) { 1448 if (!access_ok(VERIFY_WRITE, argp, size)) 1449 goto out; 1450 } 1451 if (_IOC_DIR(cmd) & _IOC_WRITE) { 1452 if (!access_ok(VERIFY_READ, argp, size)) 1453 goto out; 1454 } 1455 rc = 0; 1456 1457 switch (cmd) { 1458 case CM_IOCGSTATUS: 1459 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n"); 1460 { 1461 int status; 1462 1463 /* clear other bits, but leave inserted & powered as 1464 * they are */ 1465 status = dev->flags0 & 3; 1466 if (test_bit(IS_ATR_PRESENT, &dev->flags)) 1467 status |= CM_ATR_PRESENT; 1468 if (test_bit(IS_ATR_VALID, &dev->flags)) 1469 status |= CM_ATR_VALID; 1470 if (test_bit(IS_CMM_ABSENT, &dev->flags)) 1471 status |= CM_NO_READER; 1472 if (test_bit(IS_BAD_CARD, &dev->flags)) 1473 status |= CM_BAD_CARD; 1474 if (copy_to_user(argp, &status, sizeof(int))) 1475 rc = -EFAULT; 1476 } 1477 break; 1478 case CM_IOCGATR: 1479 DEBUGP(4, dev, "... in CM_IOCGATR\n"); 1480 { 1481 struct atreq __user *atreq = argp; 1482 int tmp; 1483 /* allow nonblocking io and being interrupted */ 1484 if (wait_event_interruptible 1485 (dev->atrq, 1486 ((filp->f_flags & O_NONBLOCK) 1487 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) 1488 != 0)))) { 1489 if (filp->f_flags & O_NONBLOCK) 1490 rc = -EAGAIN; 1491 else 1492 rc = -ERESTARTSYS; 1493 break; 1494 } 1495 1496 rc = -EFAULT; 1497 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { 1498 tmp = -1; 1499 if (copy_to_user(&(atreq->atr_len), &tmp, 1500 sizeof(int))) 1501 break; 1502 } else { 1503 if (copy_to_user(atreq->atr, dev->atr, 1504 dev->atr_len)) 1505 break; 1506 1507 tmp = dev->atr_len; 1508 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int))) 1509 break; 1510 } 1511 rc = 0; 1512 break; 1513 } 1514 case CM_IOCARDOFF: 1515 1516#ifdef CM4000_DEBUG 1517 DEBUGP(4, dev, "... in CM_IOCARDOFF\n"); 1518 if (dev->flags0 & 0x01) { 1519 DEBUGP(4, dev, " Card inserted\n"); 1520 } else { 1521 DEBUGP(2, dev, " No card inserted\n"); 1522 } 1523 if (dev->flags0 & 0x02) { 1524 DEBUGP(4, dev, " Card powered\n"); 1525 } else { 1526 DEBUGP(2, dev, " Card not powered\n"); 1527 } 1528#endif 1529 1530 /* is a card inserted and powered? */ 1531 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) { 1532 1533 /* get IO lock */ 1534 if (wait_event_interruptible 1535 (dev->ioq, 1536 ((filp->f_flags & O_NONBLOCK) 1537 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) 1538 == 0)))) { 1539 if (filp->f_flags & O_NONBLOCK) 1540 rc = -EAGAIN; 1541 else 1542 rc = -ERESTARTSYS; 1543 break; 1544 } 1545 /* Set Flags0 = 0x42 */ 1546 DEBUGP(4, dev, "Set Flags0=0x42 \n"); 1547 xoutb(0x42, REG_FLAGS0(iobase)); 1548 clear_bit(IS_ATR_PRESENT, &dev->flags); 1549 clear_bit(IS_ATR_VALID, &dev->flags); 1550 dev->mstate = M_CARDOFF; 1551 clear_bit(LOCK_IO, &dev->flags); 1552 if (wait_event_interruptible 1553 (dev->atrq, 1554 ((filp->f_flags & O_NONBLOCK) 1555 || (test_bit(IS_ATR_VALID, (void *)&dev->flags) != 1556 0)))) { 1557 if (filp->f_flags & O_NONBLOCK) 1558 rc = -EAGAIN; 1559 else 1560 rc = -ERESTARTSYS; 1561 break; 1562 } 1563 } 1564 /* release lock */ 1565 clear_bit(LOCK_IO, &dev->flags); 1566 wake_up_interruptible(&dev->ioq); 1567 1568 rc = 0; 1569 break; 1570 case CM_IOCSPTS: 1571 { 1572 struct ptsreq krnptsreq; 1573 1574 if (copy_from_user(&krnptsreq, argp, 1575 sizeof(struct ptsreq))) { 1576 rc = -EFAULT; 1577 break; 1578 } 1579 1580 rc = 0; 1581 DEBUGP(4, dev, "... in CM_IOCSPTS\n"); 1582 /* wait for ATR to get valid */ 1583 if (wait_event_interruptible 1584 (dev->atrq, 1585 ((filp->f_flags & O_NONBLOCK) 1586 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) 1587 != 0)))) { 1588 if (filp->f_flags & O_NONBLOCK) 1589 rc = -EAGAIN; 1590 else 1591 rc = -ERESTARTSYS; 1592 break; 1593 } 1594 /* get IO lock */ 1595 if (wait_event_interruptible 1596 (dev->ioq, 1597 ((filp->f_flags & O_NONBLOCK) 1598 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) 1599 == 0)))) { 1600 if (filp->f_flags & O_NONBLOCK) 1601 rc = -EAGAIN; 1602 else 1603 rc = -ERESTARTSYS; 1604 break; 1605 } 1606 1607 if ((rc = set_protocol(dev, &krnptsreq)) != 0) { 1608 /* auto power_on again */ 1609 dev->mstate = M_FETCH_ATR; 1610 clear_bit(IS_ATR_VALID, &dev->flags); 1611 } 1612 /* release lock */ 1613 clear_bit(LOCK_IO, &dev->flags); 1614 wake_up_interruptible(&dev->ioq); 1615 1616 } 1617 break; 1618#ifdef CM4000_DEBUG 1619 case CM_IOSDBGLVL: 1620 rc = -ENOTTY; 1621 break; 1622#endif 1623 default: 1624 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n"); 1625 rc = -ENOTTY; 1626 } 1627out: 1628 mutex_unlock(&cmm_mutex); 1629 return rc; 1630} 1631 1632static int cmm_open(struct inode *inode, struct file *filp) 1633{ 1634 struct cm4000_dev *dev; 1635 struct pcmcia_device *link; 1636 int minor = iminor(inode); 1637 int ret; 1638 1639 if (minor >= CM4000_MAX_DEV) 1640 return -ENODEV; 1641 1642 mutex_lock(&cmm_mutex); 1643 link = dev_table[minor]; 1644 if (link == NULL || !pcmcia_dev_present(link)) { 1645 ret = -ENODEV; 1646 goto out; 1647 } 1648 1649 if (link->open) { 1650 ret = -EBUSY; 1651 goto out; 1652 } 1653 1654 dev = link->priv; 1655 filp->private_data = dev; 1656 1657 DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n", 1658 imajor(inode), minor, current->comm, current->pid); 1659 1660 /* init device variables, they may be "polluted" after close 1661 * or, the device may never have been closed (i.e. open failed) 1662 */ 1663 1664 ZERO_DEV(dev); 1665 1666 /* opening will always block since the 1667 * monitor will be started by open, which 1668 * means we have to wait for ATR becoming 1669 * valid = block until valid (or card 1670 * inserted) 1671 */ 1672 if (filp->f_flags & O_NONBLOCK) { 1673 ret = -EAGAIN; 1674 goto out; 1675 } 1676 1677 dev->mdelay = T_50MSEC; 1678 1679 /* start monitoring the cardstatus */ 1680 start_monitor(dev); 1681 1682 link->open = 1; /* only one open per device */ 1683 1684 DEBUGP(2, dev, "<- cmm_open\n"); 1685 ret = nonseekable_open(inode, filp); 1686out: 1687 mutex_unlock(&cmm_mutex); 1688 return ret; 1689} 1690 1691static int cmm_close(struct inode *inode, struct file *filp) 1692{ 1693 struct cm4000_dev *dev; 1694 struct pcmcia_device *link; 1695 int minor = iminor(inode); 1696 1697 if (minor >= CM4000_MAX_DEV) 1698 return -ENODEV; 1699 1700 link = dev_table[minor]; 1701 if (link == NULL) 1702 return -ENODEV; 1703 1704 dev = link->priv; 1705 1706 DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n", 1707 imajor(inode), minor); 1708 1709 stop_monitor(dev); 1710 1711 ZERO_DEV(dev); 1712 1713 link->open = 0; /* only one open per device */ 1714 wake_up(&dev->devq); /* socket removed? */ 1715 1716 DEBUGP(2, dev, "cmm_close\n"); 1717 return 0; 1718} 1719 1720static void cmm_cm4000_release(struct pcmcia_device * link) 1721{ 1722 struct cm4000_dev *dev = link->priv; 1723 1724 /* dont terminate the monitor, rather rely on 1725 * close doing that for us. 1726 */ 1727 DEBUGP(3, dev, "-> cmm_cm4000_release\n"); 1728 while (link->open) { 1729 printk(KERN_INFO MODULE_NAME ": delaying release until " 1730 "process has terminated\n"); 1731 /* note: don't interrupt us: 1732 * close the applications which own 1733 * the devices _first_ ! 1734 */ 1735 wait_event(dev->devq, (link->open == 0)); 1736 } 1737 /* dev->devq=NULL; this cannot be zeroed earlier */ 1738 DEBUGP(3, dev, "<- cmm_cm4000_release\n"); 1739 return; 1740} 1741 1742/*==== Interface to PCMCIA Layer =======================================*/ 1743 1744static int cm4000_config_check(struct pcmcia_device *p_dev, void *priv_data) 1745{ 1746 return pcmcia_request_io(p_dev); 1747} 1748 1749static int cm4000_config(struct pcmcia_device * link, int devno) 1750{ 1751 struct cm4000_dev *dev; 1752 1753 link->config_flags |= CONF_AUTO_SET_IO; 1754 1755 /* read the config-tuples */ 1756 if (pcmcia_loop_config(link, cm4000_config_check, NULL)) 1757 goto cs_release; 1758 1759 if (pcmcia_enable_device(link)) 1760 goto cs_release; 1761 1762 dev = link->priv; 1763 1764 return 0; 1765 1766cs_release: 1767 cm4000_release(link); 1768 return -ENODEV; 1769} 1770 1771static int cm4000_suspend(struct pcmcia_device *link) 1772{ 1773 struct cm4000_dev *dev; 1774 1775 dev = link->priv; 1776 stop_monitor(dev); 1777 1778 return 0; 1779} 1780 1781static int cm4000_resume(struct pcmcia_device *link) 1782{ 1783 struct cm4000_dev *dev; 1784 1785 dev = link->priv; 1786 if (link->open) 1787 start_monitor(dev); 1788 1789 return 0; 1790} 1791 1792static void cm4000_release(struct pcmcia_device *link) 1793{ 1794 cmm_cm4000_release(link); /* delay release until device closed */ 1795 pcmcia_disable_device(link); 1796} 1797 1798static int cm4000_probe(struct pcmcia_device *link) 1799{ 1800 struct cm4000_dev *dev; 1801 int i, ret; 1802 1803 for (i = 0; i < CM4000_MAX_DEV; i++) 1804 if (dev_table[i] == NULL) 1805 break; 1806 1807 if (i == CM4000_MAX_DEV) { 1808 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n"); 1809 return -ENODEV; 1810 } 1811 1812 /* create a new cm4000_cs device */ 1813 dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL); 1814 if (dev == NULL) 1815 return -ENOMEM; 1816 1817 dev->p_dev = link; 1818 link->priv = dev; 1819 dev_table[i] = link; 1820 1821 init_waitqueue_head(&dev->devq); 1822 init_waitqueue_head(&dev->ioq); 1823 init_waitqueue_head(&dev->atrq); 1824 init_waitqueue_head(&dev->readq); 1825 1826 ret = cm4000_config(link, i); 1827 if (ret) { 1828 dev_table[i] = NULL; 1829 kfree(dev); 1830 return ret; 1831 } 1832 1833 device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i); 1834 1835 return 0; 1836} 1837 1838static void cm4000_detach(struct pcmcia_device *link) 1839{ 1840 struct cm4000_dev *dev = link->priv; 1841 int devno; 1842 1843 /* find device */ 1844 for (devno = 0; devno < CM4000_MAX_DEV; devno++) 1845 if (dev_table[devno] == link) 1846 break; 1847 if (devno == CM4000_MAX_DEV) 1848 return; 1849 1850 stop_monitor(dev); 1851 1852 cm4000_release(link); 1853 1854 dev_table[devno] = NULL; 1855 kfree(dev); 1856 1857 device_destroy(cmm_class, MKDEV(major, devno)); 1858 1859 return; 1860} 1861 1862static const struct file_operations cm4000_fops = { 1863 .owner = THIS_MODULE, 1864 .read = cmm_read, 1865 .write = cmm_write, 1866 .unlocked_ioctl = cmm_ioctl, 1867 .open = cmm_open, 1868 .release= cmm_close, 1869 .llseek = no_llseek, 1870}; 1871 1872static const struct pcmcia_device_id cm4000_ids[] = { 1873 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002), 1874 PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39), 1875 PCMCIA_DEVICE_NULL, 1876}; 1877MODULE_DEVICE_TABLE(pcmcia, cm4000_ids); 1878 1879static struct pcmcia_driver cm4000_driver = { 1880 .owner = THIS_MODULE, 1881 .name = "cm4000_cs", 1882 .probe = cm4000_probe, 1883 .remove = cm4000_detach, 1884 .suspend = cm4000_suspend, 1885 .resume = cm4000_resume, 1886 .id_table = cm4000_ids, 1887}; 1888 1889static int __init cmm_init(void) 1890{ 1891 int rc; 1892 1893 cmm_class = class_create(THIS_MODULE, "cardman_4000"); 1894 if (IS_ERR(cmm_class)) 1895 return PTR_ERR(cmm_class); 1896 1897 major = register_chrdev(0, DEVICE_NAME, &cm4000_fops); 1898 if (major < 0) { 1899 printk(KERN_WARNING MODULE_NAME 1900 ": could not get major number\n"); 1901 class_destroy(cmm_class); 1902 return major; 1903 } 1904 1905 rc = pcmcia_register_driver(&cm4000_driver); 1906 if (rc < 0) { 1907 unregister_chrdev(major, DEVICE_NAME); 1908 class_destroy(cmm_class); 1909 return rc; 1910 } 1911 1912 return 0; 1913} 1914 1915static void __exit cmm_exit(void) 1916{ 1917 pcmcia_unregister_driver(&cm4000_driver); 1918 unregister_chrdev(major, DEVICE_NAME); 1919 class_destroy(cmm_class); 1920}; 1921 1922module_init(cmm_init); 1923module_exit(cmm_exit); 1924MODULE_LICENSE("Dual BSD/GPL"); 1925