2 * A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000"
4 * cm4000_cs.c support.linux@omnikey.com
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
12 * current version: 2.4.0gm4
14 * (C) 2000,2001,2002,2003,2004 Omnikey AG
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
23 * All rights reserved. Licensed under dual BSD/GPL license.
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/slab.h>
29 #include <linux/init.h>
31 #include <linux/delay.h>
32 #include <linux/bitrev.h>
33 #include <linux/smp_lock.h>
34 #include <linux/uaccess.h>
37 #include <pcmcia/cistpl.h>
38 #include <pcmcia/cisreg.h>
39 #include <pcmcia/ciscode.h>
40 #include <pcmcia/ds.h>
42 #include <linux/cm4000_cs.h>
44 /* #define ATR_CSUM */
46 #define reader_to_dev(x) (&x->p_dev->dev)
48 /* n (debug level) is ignored */
49 /* additional debug output may be enabled by re-compiling with
51 /* #define CM4000_DEBUG */
52 #define DEBUGP(n, rdr, x, args...) do { \
53 dev_dbg(reader_to_dev(rdr), "%s:" x, \
54 __func__ , ## args); \
58 #define T_10MSEC msecs_to_jiffies(10)
59 #define T_20MSEC msecs_to_jiffies(20)
60 #define T_40MSEC msecs_to_jiffies(40)
61 #define T_50MSEC msecs_to_jiffies(50)
62 #define T_100MSEC msecs_to_jiffies(100)
63 #define T_500MSEC msecs_to_jiffies(500)
65 static void cm4000_release(struct pcmcia_device *link);
67 static int major; /* major number we get from the kernel */
69 /* note: the first state has to have number 0 always */
72 #define M_TIMEOUT_WAIT 1
73 #define M_READ_ATR_LEN 2
75 #define M_ATR_PRESENT 4
80 #define LOCK_MONITOR 1
82 #define IS_AUTOPPS_ACT 6
83 #define IS_PROCBYTE_PRESENT 7
87 #define IS_ATR_PRESENT 11
88 #define IS_ATR_VALID 12
89 #define IS_CMM_ABSENT 13
90 #define IS_BAD_LENGTH 14
91 #define IS_BAD_CSUM 15
92 #define IS_BAD_CARD 16
94 #define REG_FLAGS0(x) (x + 0)
95 #define REG_FLAGS1(x) (x + 1)
96 #define REG_NUM_BYTES(x) (x + 2)
97 #define REG_BUF_ADDR(x) (x + 3)
98 #define REG_BUF_DATA(x) (x + 4)
99 #define REG_NUM_SEND(x) (x + 5)
100 #define REG_BAUDRATE(x) (x + 6)
101 #define REG_STOPBITS(x) (x + 7)
104 struct pcmcia_device *p_dev;
106 unsigned char atr[MAX_ATR];
107 unsigned char rbuf[512];
108 unsigned char sbuf[512];
110 wait_queue_head_t devq; /* when removing cardman must not be
113 wait_queue_head_t ioq; /* if IO is locked, wait on this Q */
114 wait_queue_head_t atrq; /* wait for ATR valid */
115 wait_queue_head_t readq; /* used by write to wake blk.read */
117 /* warning: do not move this fields.
118 * initialising to zero depends on it - see ZERO_DEV below. */
119 unsigned char atr_csum;
120 unsigned char atr_len_retry;
121 unsigned short atr_len;
122 unsigned short rlen; /* bytes avail. after write */
123 unsigned short rpos; /* latest read pos. write zeroes */
124 unsigned char procbyte; /* T=0 procedure byte */
125 unsigned char mstate; /* state of card monitor */
126 unsigned char cwarn; /* slow down warning */
127 unsigned char flags0; /* cardman IO-flags 0 */
128 unsigned char flags1; /* cardman IO-flags 1 */
129 unsigned int mdelay; /* variable monitor speeds, in jiffies */
131 unsigned int baudv; /* baud value for speed */
133 unsigned char proto; /* T=0, T=1, ... */
134 unsigned long flags; /* lock+flags (MONITOR,IO,ATR) * for concurrent
137 unsigned char pts[4];
139 struct timer_list timer; /* used to keep monitor running */
143 #define ZERO_DEV(dev) \
144 memset(&dev->atr_csum,0, \
145 sizeof(struct cm4000_dev) - \
146 offsetof(struct cm4000_dev, atr_csum))
148 static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
149 static struct class *cmm_class;
151 /* This table doesn't use spaces after the comma between fields and thus
152 * violates CodingStyle. However, I don't really think wrapping it around will
153 * make it any clearer to read -HW */
154 static unsigned char fi_di_table[10][14] = {
155 /*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */
157 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
158 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
159 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
160 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
161 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
162 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
163 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
164 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
165 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
166 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
173 static inline void xoutb(unsigned char val, unsigned short port)
175 pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
178 static inline unsigned char xinb(unsigned short port)
183 pr_debug("%.2x=inb(%.4x)\n", val, port);
189 static inline unsigned char invert_revert(unsigned char ch)
194 static void str_invert_revert(unsigned char *b, int len)
198 for (i = 0; i < len; i++)
199 b[i] = invert_revert(b[i]);
202 #define ATRLENCK(dev,pos) \
203 if (pos>=dev->atr_len || pos>=MAX_ATR) \
206 static unsigned int calc_baudv(unsigned char fidi)
208 unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
214 switch ((fidi >> 4) & 0x0F) {
263 switch (fidi & 0x0F) {
299 return (wcrcf / wbrcf);
302 static unsigned short io_read_num_rec_bytes(unsigned int iobase,
310 tmp = inb(REG_NUM_BYTES(iobase)) |
311 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
317 static int parse_atr(struct cm4000_dev *dev)
319 unsigned char any_t1, any_t0;
320 unsigned char ch, ifno;
323 DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
325 if (dev->atr_len < 3) {
326 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
330 if (dev->atr[0] == 0x3f)
331 set_bit(IS_INVREV, &dev->flags);
333 clear_bit(IS_INVREV, &dev->flags);
337 dev->proto = 0; /* XXX PROTO */
338 any_t1 = any_t0 = done = 0;
339 dev->ta1 = 0x11; /* defaults to 9600 baud */
341 if (ifno == 1 && (ch & 0x10)) {
342 /* read first interface byte and TA1 is present */
343 dev->ta1 = dev->atr[2];
344 DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
346 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
351 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
352 ix += ((ch & 0x10) >> 4) /* no of int.face chars */
355 + ((ch & 0x80) >> 7);
356 /* ATRLENCK(dev,ix); */
357 if (ch & 0x80) { /* TDi */
361 DEBUGP(5, dev, "card is capable of T=1\n");
364 DEBUGP(5, dev, "card is capable of T=0\n");
370 DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
371 ix, dev->atr[1] & 15, any_t1);
372 if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
373 DEBUGP(5, dev, "length error\n");
377 set_bit(IS_ANY_T0, &dev->flags);
379 if (any_t1) { /* compute csum */
382 for (i = 1; i < dev->atr_len; i++)
383 dev->atr_csum ^= dev->atr[i];
385 set_bit(IS_BAD_CSUM, &dev->flags);
386 DEBUGP(5, dev, "bad checksum\n");
391 dev->proto = 1; /* XXX PROTO */
392 set_bit(IS_ANY_T1, &dev->flags);
404 static struct card_fixup card_fixups[] = {
406 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
411 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
418 static void set_cardparameter(struct cm4000_dev *dev)
421 unsigned int iobase = dev->p_dev->resource[0]->start;
422 u_int8_t stopbits = 0x02; /* ISO default */
424 DEBUGP(3, dev, "-> set_cardparameter\n");
426 dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
427 xoutb(dev->flags1, REG_FLAGS1(iobase));
428 DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
431 xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
433 DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
434 ((dev->baudv - 1) & 0xFF));
437 for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
438 if (!memcmp(dev->atr, card_fixups[i].atr,
439 card_fixups[i].atr_len))
440 stopbits = card_fixups[i].stopbits;
442 xoutb(stopbits, REG_STOPBITS(iobase));
444 DEBUGP(3, dev, "<- set_cardparameter\n");
447 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
450 unsigned long tmp, i;
451 unsigned short num_bytes_read;
452 unsigned char pts_reply[4];
454 unsigned int iobase = dev->p_dev->resource[0]->start;
458 DEBUGP(3, dev, "-> set_protocol\n");
459 DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
460 "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
461 "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
462 (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
465 /* Fill PTS structure */
468 tmp = ptsreq->protocol;
469 while ((tmp = (tmp >> 1)) > 0)
471 dev->proto = dev->pts[1]; /* Set new protocol */
472 dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
474 /* Correct Fi/Di according to CM4000 Fi/Di table */
475 DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
476 /* set Fi/Di according to ATR TA(1) */
477 dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
479 /* Calculate PCK character */
480 dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
482 DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
483 dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
485 /* check card convention */
486 if (test_bit(IS_INVREV, &dev->flags))
487 str_invert_revert(dev->pts, 4);
490 xoutb(0x80, REG_FLAGS0(iobase));
492 /* Enable access to the message buffer */
493 DEBUGP(5, dev, "Enable access to the messages buffer\n");
494 dev->flags1 = 0x20 /* T_Active */
495 | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
496 | ((dev->baudv >> 8) & 0x01); /* MSB-baud */
497 xoutb(dev->flags1, REG_FLAGS1(iobase));
499 DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
502 /* write challenge to the buffer */
503 DEBUGP(5, dev, "Write challenge to buffer: ");
504 for (i = 0; i < 4; i++) {
505 xoutb(i, REG_BUF_ADDR(iobase));
506 xoutb(dev->pts[i], REG_BUF_DATA(iobase)); /* buf data */
508 pr_debug("0x%.2x ", dev->pts[i]);
515 /* set number of bytes to write */
516 DEBUGP(5, dev, "Set number of bytes to write\n");
517 xoutb(0x04, REG_NUM_SEND(iobase));
519 /* Trigger CARDMAN CONTROLLER */
520 xoutb(0x50, REG_FLAGS0(iobase));
522 /* Monitor progress */
523 /* wait for xmit done */
524 DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
526 for (i = 0; i < 100; i++) {
527 if (inb(REG_FLAGS0(iobase)) & 0x08) {
528 DEBUGP(5, dev, "NumRecBytes is valid\n");
534 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
537 goto exit_setprotocol;
540 DEBUGP(5, dev, "Reading NumRecBytes\n");
541 for (i = 0; i < 100; i++) {
542 io_read_num_rec_bytes(iobase, &num_bytes_read);
543 if (num_bytes_read >= 4) {
544 DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
550 /* check whether it is a short PTS reply? */
551 if (num_bytes_read == 3)
555 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
557 goto exit_setprotocol;
560 DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
561 xoutb(0x80, REG_FLAGS0(iobase));
564 DEBUGP(5, dev, "Read PPS reply\n");
565 for (i = 0; i < num_bytes_read; i++) {
566 xoutb(i, REG_BUF_ADDR(iobase));
567 pts_reply[i] = inb(REG_BUF_DATA(iobase));
571 DEBUGP(2, dev, "PTSreply: ");
572 for (i = 0; i < num_bytes_read; i++) {
573 pr_debug("0x%.2x ", pts_reply[i]);
576 #endif /* CM4000_DEBUG */
578 DEBUGP(5, dev, "Clear Tactive in Flags1\n");
579 xoutb(0x20, REG_FLAGS1(iobase));
581 /* Compare ptsreq and ptsreply */
582 if ((dev->pts[0] == pts_reply[0]) &&
583 (dev->pts[1] == pts_reply[1]) &&
584 (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
585 /* setcardparameter according to PPS */
586 dev->baudv = calc_baudv(dev->pts[2]);
587 set_cardparameter(dev);
588 } else if ((dev->pts[0] == pts_reply[0]) &&
589 ((dev->pts[1] & 0xef) == pts_reply[1]) &&
590 ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
591 /* short PTS reply, set card parameter to default values */
592 dev->baudv = calc_baudv(0x11);
593 set_cardparameter(dev);
598 DEBUGP(3, dev, "<- set_protocol\n");
602 static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
605 /* note: statemachine is assumed to be reset */
606 if (inb(REG_FLAGS0(iobase)) & 8) {
607 clear_bit(IS_ATR_VALID, &dev->flags);
608 set_bit(IS_CMM_ABSENT, &dev->flags);
609 return 0; /* detect CMM = 1 -> failure */
611 /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
612 xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
613 if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
614 clear_bit(IS_ATR_VALID, &dev->flags);
615 set_bit(IS_CMM_ABSENT, &dev->flags);
616 return 0; /* detect CMM=0 -> failure */
618 /* clear detectCMM again by restoring original flags1 */
619 xoutb(dev->flags1, REG_FLAGS1(iobase));
623 static void terminate_monitor(struct cm4000_dev *dev)
626 /* tell the monitor to stop and wait until
629 DEBUGP(3, dev, "-> terminate_monitor\n");
630 wait_event_interruptible(dev->devq,
631 test_and_set_bit(LOCK_MONITOR,
632 (void *)&dev->flags));
634 /* now, LOCK_MONITOR has been set.
635 * allow a last cycle in the monitor.
636 * the monitor will indicate that it has
637 * finished by clearing this bit.
639 DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
640 while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
643 DEBUGP(5, dev, "Delete timer\n");
644 del_timer_sync(&dev->timer);
646 dev->monitor_running = 0;
649 DEBUGP(3, dev, "<- terminate_monitor\n");
653 * monitor the card every 50msec. as a side-effect, retrieve the
654 * atr once a card is inserted. another side-effect of retrieving the
655 * atr is that the card will be powered on, so there is no need to
656 * power on the card explictely from the application: the driver
657 * is already doing that for you.
660 static void monitor_card(unsigned long p)
662 struct cm4000_dev *dev = (struct cm4000_dev *) p;
663 unsigned int iobase = dev->p_dev->resource[0]->start;
665 struct ptsreq ptsreq;
668 DEBUGP(7, dev, "-> monitor_card\n");
670 /* if someone has set the lock for us: we're done! */
671 if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
672 DEBUGP(4, dev, "About to stop monitor\n");
676 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
677 dev->mstate = M_FETCH_ATR;
678 clear_bit(LOCK_MONITOR, &dev->flags);
679 /* close et al. are sleeping on devq, so wake it */
680 wake_up_interruptible(&dev->devq);
681 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
685 /* try to lock io: if it is already locked, just add another timer */
686 if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
687 DEBUGP(4, dev, "Couldn't get IO lock\n");
688 goto return_with_timer;
691 /* is a card/a reader inserted at all ? */
692 dev->flags0 = xinb(REG_FLAGS0(iobase));
693 DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
694 DEBUGP(7, dev, "smartcard present: %s\n",
695 dev->flags0 & 1 ? "yes" : "no");
696 DEBUGP(7, dev, "cardman present: %s\n",
697 dev->flags0 == 0xff ? "no" : "yes");
699 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
700 || dev->flags0 == 0xff) { /* no cardman inserted */
704 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
705 dev->mstate = M_FETCH_ATR;
707 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
709 if (dev->flags0 == 0xff) {
710 DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
711 set_bit(IS_CMM_ABSENT, &dev->flags);
712 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
713 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
714 "(card is removed)\n");
715 clear_bit(IS_CMM_ABSENT, &dev->flags);
719 } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
720 /* cardman and card present but cardman was absent before
721 * (after suspend with inserted card) */
722 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
723 clear_bit(IS_CMM_ABSENT, &dev->flags);
726 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
727 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
731 switch (dev->mstate) {
732 unsigned char flags0;
734 DEBUGP(4, dev, "M_CARDOFF\n");
735 flags0 = inb(REG_FLAGS0(iobase));
737 /* wait until Flags0 indicate power is off */
738 dev->mdelay = T_10MSEC;
740 /* Flags0 indicate power off and no card inserted now;
741 * Reset CARDMAN CONTROLLER */
742 xoutb(0x80, REG_FLAGS0(iobase));
744 /* prepare for fetching ATR again: after card off ATR
745 * is read again automatically */
749 dev->atr_len_retry = dev->cwarn = 0;
750 dev->mstate = M_FETCH_ATR;
752 /* minimal gap between CARDOFF and read ATR is 50msec */
753 dev->mdelay = T_50MSEC;
757 DEBUGP(4, dev, "M_FETCH_ATR\n");
758 xoutb(0x80, REG_FLAGS0(iobase));
759 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
760 dev->baudv = 0x173; /* 9600 */
761 xoutb(0x02, REG_STOPBITS(iobase)); /* stopbits=2 */
762 xoutb(0x73, REG_BAUDRATE(iobase)); /* baud value */
763 xoutb(0x21, REG_FLAGS1(iobase)); /* T_Active=1, baud
765 /* warm start vs. power on: */
766 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
767 dev->mdelay = T_40MSEC;
768 dev->mstate = M_TIMEOUT_WAIT;
771 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
773 io_read_num_rec_bytes(iobase, &dev->atr_len);
774 dev->mdelay = T_10MSEC;
775 dev->mstate = M_READ_ATR_LEN;
778 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
779 /* infinite loop possible, since there is no timeout */
781 #define MAX_ATR_LEN_RETRY 100
783 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
784 if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) { /* + XX msec */
785 dev->mdelay = T_10MSEC;
786 dev->mstate = M_READ_ATR;
790 dev->atr_len_retry = 0; /* set new timeout */
793 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
796 DEBUGP(4, dev, "M_READ_ATR\n");
797 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
798 for (i = 0; i < dev->atr_len; i++) {
799 xoutb(i, REG_BUF_ADDR(iobase));
800 dev->atr[i] = inb(REG_BUF_DATA(iobase));
802 /* Deactivate T_Active flags */
803 DEBUGP(4, dev, "Deactivate T_Active flags\n");
805 xoutb(dev->flags1, REG_FLAGS1(iobase));
807 /* atr is present (which doesnt mean it's valid) */
808 set_bit(IS_ATR_PRESENT, &dev->flags);
809 if (dev->atr[0] == 0x03)
810 str_invert_revert(dev->atr, dev->atr_len);
811 atrc = parse_atr(dev);
812 if (atrc == 0) { /* atr invalid */
814 dev->mstate = M_BAD_CARD;
816 dev->mdelay = T_50MSEC;
817 dev->mstate = M_ATR_PRESENT;
818 set_bit(IS_ATR_VALID, &dev->flags);
821 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
822 DEBUGP(4, dev, "monitor_card: ATR valid\n");
823 /* if ta1 == 0x11, no PPS necessary (default values) */
824 /* do not do PPS with multi protocol cards */
825 if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
826 (dev->ta1 != 0x11) &&
827 !(test_bit(IS_ANY_T0, &dev->flags) &&
828 test_bit(IS_ANY_T1, &dev->flags))) {
829 DEBUGP(4, dev, "Perform AUTOPPS\n");
830 set_bit(IS_AUTOPPS_ACT, &dev->flags);
831 ptsreq.protocol = ptsreq.protocol =
832 (0x01 << dev->proto);
837 if (set_protocol(dev, &ptsreq) == 0) {
838 DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
839 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
840 wake_up_interruptible(&dev->atrq);
842 DEBUGP(4, dev, "AUTOPPS failed: "
843 "repower using defaults\n");
844 /* prepare for repowering */
845 clear_bit(IS_ATR_PRESENT, &dev->flags);
846 clear_bit(IS_ATR_VALID, &dev->flags);
850 dev->atr_len_retry = dev->cwarn = 0;
851 dev->mstate = M_FETCH_ATR;
853 dev->mdelay = T_50MSEC;
856 /* for cards which use slightly different
857 * params (extra guard time) */
858 set_cardparameter(dev);
859 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
860 DEBUGP(4, dev, "AUTOPPS already active "
861 "2nd try:use default values\n");
862 if (dev->ta1 == 0x11)
863 DEBUGP(4, dev, "No AUTOPPS necessary "
865 if (test_bit(IS_ANY_T0, &dev->flags)
866 && test_bit(IS_ANY_T1, &dev->flags))
867 DEBUGP(4, dev, "Do NOT perform AUTOPPS "
868 "with multiprotocol cards\n");
869 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
870 wake_up_interruptible(&dev->atrq);
873 DEBUGP(4, dev, "ATR invalid\n");
874 wake_up_interruptible(&dev->atrq);
878 DEBUGP(4, dev, "M_BAD_CARD\n");
879 /* slow down warning, but prompt immediately after insertion */
880 if (dev->cwarn == 0 || dev->cwarn == 10) {
881 set_bit(IS_BAD_CARD, &dev->flags);
882 dev_warn(&dev->p_dev->dev, MODULE_NAME ": ");
883 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
884 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
885 "be zero) failed\n", dev->atr_csum);
888 else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
889 DEBUGP(4, dev, "ATR length error\n");
891 DEBUGP(4, dev, "card damaged or wrong way "
896 wake_up_interruptible(&dev->atrq); /* wake open */
899 dev->mdelay = T_100MSEC;
900 dev->mstate = M_FETCH_ATR;
903 DEBUGP(7, dev, "Unknown action\n");
908 DEBUGP(7, dev, "release_io\n");
909 clear_bit(LOCK_IO, &dev->flags);
910 wake_up_interruptible(&dev->ioq); /* whoever needs IO */
913 DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
914 mod_timer(&dev->timer, jiffies + dev->mdelay);
915 clear_bit(LOCK_MONITOR, &dev->flags);
918 /* Interface to userland (file_operations) */
920 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
923 struct cm4000_dev *dev = filp->private_data;
924 unsigned int iobase = dev->p_dev->resource[0]->start;
928 DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
930 if (count == 0) /* according to manpage */
933 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
934 test_bit(IS_CMM_ABSENT, &dev->flags))
937 if (test_bit(IS_BAD_CSUM, &dev->flags))
940 /* also see the note about this in cmm_write */
941 if (wait_event_interruptible
943 ((filp->f_flags & O_NONBLOCK)
944 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
945 if (filp->f_flags & O_NONBLOCK)
950 if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
953 /* this one implements blocking IO */
954 if (wait_event_interruptible
956 ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
957 if (filp->f_flags & O_NONBLOCK)
963 if (wait_event_interruptible
965 ((filp->f_flags & O_NONBLOCK)
966 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
967 if (filp->f_flags & O_NONBLOCK)
973 dev->flags0 = inb(REG_FLAGS0(iobase));
974 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
975 || dev->flags0 == 0xff) { /* no cardman inserted */
976 clear_bit(IS_ATR_VALID, &dev->flags);
977 if (dev->flags0 & 1) {
978 set_bit(IS_CMM_ABSENT, &dev->flags);
985 DEBUGP(4, dev, "begin read answer\n");
986 j = min(count, (size_t)(dev->rlen - dev->rpos));
990 DEBUGP(4, dev, "read1 j=%d\n", j);
991 for (i = 0; i < j; i++) {
992 xoutb(k++, REG_BUF_ADDR(iobase));
993 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
995 j = min(count, (size_t)(dev->rlen - dev->rpos));
997 DEBUGP(4, dev, "read2 j=%d\n", j);
998 dev->flags1 |= 0x10; /* MSB buf addr set */
999 xoutb(dev->flags1, REG_FLAGS1(iobase));
1000 for (; i < j; i++) {
1001 xoutb(k++, REG_BUF_ADDR(iobase));
1002 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1006 if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) {
1007 DEBUGP(4, dev, "T=0 and count > buffer\n");
1008 dev->rbuf[i] = dev->rbuf[i - 1];
1009 dev->rbuf[i - 1] = dev->procbyte;
1014 dev->rpos = dev->rlen + 1;
1016 /* Clear T1Active */
1017 DEBUGP(4, dev, "Clear T1Active\n");
1018 dev->flags1 &= 0xdf;
1019 xoutb(dev->flags1, REG_FLAGS1(iobase));
1021 xoutb(0, REG_FLAGS1(iobase)); /* clear detectCMM */
1022 /* last check before exit */
1023 if (!io_detect_cm4000(iobase, dev)) {
1028 if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1029 str_invert_revert(dev->rbuf, count);
1031 if (copy_to_user(buf, dev->rbuf, count))
1035 clear_bit(LOCK_IO, &dev->flags);
1036 wake_up_interruptible(&dev->ioq);
1038 DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1039 (rc < 0 ? rc : count));
1040 return rc < 0 ? rc : count;
1043 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1044 size_t count, loff_t *ppos)
1046 struct cm4000_dev *dev = filp->private_data;
1047 unsigned int iobase = dev->p_dev->resource[0]->start;
1050 unsigned char infolen;
1051 unsigned char sendT0;
1052 unsigned short nsend;
1057 DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1059 if (count == 0) /* according to manpage */
1062 if (dev->proto == 0 && count < 4) {
1063 /* T0 must have at least 4 bytes */
1064 DEBUGP(4, dev, "T0 short write\n");
1068 nr = count & 0x1ff; /* max bytes to write */
1070 sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1072 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1073 test_bit(IS_CMM_ABSENT, &dev->flags))
1076 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1077 DEBUGP(4, dev, "bad csum\n");
1082 * wait for atr to become valid.
1083 * note: it is important to lock this code. if we dont, the monitor
1084 * could be run between test_bit and the call to sleep on the
1085 * atr-queue. if *then* the monitor detects atr valid, it will wake up
1086 * any process on the atr-queue, *but* since we have been interrupted,
1087 * we do not yet sleep on this queue. this would result in a missed
1088 * wake_up and the calling process would sleep forever (until
1089 * interrupted). also, do *not* restore_flags before sleep_on, because
1090 * this could result in the same situation!
1092 if (wait_event_interruptible
1094 ((filp->f_flags & O_NONBLOCK)
1095 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1096 if (filp->f_flags & O_NONBLOCK)
1098 return -ERESTARTSYS;
1101 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1102 DEBUGP(4, dev, "invalid ATR\n");
1107 if (wait_event_interruptible
1109 ((filp->f_flags & O_NONBLOCK)
1110 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1111 if (filp->f_flags & O_NONBLOCK)
1113 return -ERESTARTSYS;
1116 if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1120 dev->flags0 = inb(REG_FLAGS0(iobase));
1121 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
1122 || dev->flags0 == 0xff) { /* no cardman inserted */
1123 clear_bit(IS_ATR_VALID, &dev->flags);
1124 if (dev->flags0 & 1) {
1125 set_bit(IS_CMM_ABSENT, &dev->flags);
1128 DEBUGP(4, dev, "IO error\n");
1134 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1136 if (!io_detect_cm4000(iobase, dev)) {
1141 /* reflect T=0 send/read mode in flags1 */
1142 dev->flags1 |= (sendT0);
1144 set_cardparameter(dev);
1146 /* dummy read, reset flag procedure received */
1147 tmp = inb(REG_FLAGS1(iobase));
1149 dev->flags1 = 0x20 /* T_Active */
1151 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity */
1152 | (((dev->baudv - 1) & 0x0100) >> 8); /* MSB-Baud */
1153 DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1154 xoutb(dev->flags1, REG_FLAGS1(iobase));
1157 DEBUGP(4, dev, "Xmit data\n");
1158 for (i = 0; i < nr; i++) {
1160 dev->flags1 = 0x20 /* T_Active */
1161 | (sendT0) /* SendT0 */
1162 /* inverse parity: */
1163 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1164 | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1165 | 0x10; /* set address high */
1166 DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1167 "high\n", dev->flags1);
1168 xoutb(dev->flags1, REG_FLAGS1(iobase));
1170 if (test_bit(IS_INVREV, &dev->flags)) {
1171 DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1172 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1173 invert_revert(dev->sbuf[i]));
1174 xoutb(i, REG_BUF_ADDR(iobase));
1175 xoutb(invert_revert(dev->sbuf[i]),
1176 REG_BUF_DATA(iobase));
1178 xoutb(i, REG_BUF_ADDR(iobase));
1179 xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1182 DEBUGP(4, dev, "Xmit done\n");
1184 if (dev->proto == 0) {
1185 /* T=0 proto: 0 byte reply */
1187 DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1188 xoutb(i, REG_BUF_ADDR(iobase));
1189 if (test_bit(IS_INVREV, &dev->flags))
1190 xoutb(0xff, REG_BUF_DATA(iobase));
1192 xoutb(0x00, REG_BUF_DATA(iobase));
1202 nsend = 5 + (unsigned char)dev->sbuf[4];
1203 if (dev->sbuf[4] == 0)
1210 /* T0: output procedure byte */
1211 if (test_bit(IS_INVREV, &dev->flags)) {
1212 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1213 "0x%.2x\n", invert_revert(dev->sbuf[1]));
1214 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1216 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1217 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1220 DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1221 (unsigned char)(nsend & 0xff));
1222 xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1224 DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1225 0x40 /* SM_Active */
1226 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1227 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1228 |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1229 xoutb(0x40 /* SM_Active */
1230 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1231 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1232 |(nsend & 0x100) >> 8, /* MSB numSendBytes */
1233 REG_FLAGS0(iobase));
1235 /* wait for xmit done */
1236 if (dev->proto == 1) {
1237 DEBUGP(4, dev, "Wait for xmit done\n");
1238 for (i = 0; i < 1000; i++) {
1239 if (inb(REG_FLAGS0(iobase)) & 0x08)
1241 msleep_interruptible(10);
1244 DEBUGP(4, dev, "timeout waiting for xmit done\n");
1250 /* T=1: wait for infoLen */
1254 /* wait until infoLen is valid */
1255 for (i = 0; i < 6000; i++) { /* max waiting time of 1 min */
1256 io_read_num_rec_bytes(iobase, &s);
1258 infolen = inb(REG_FLAGS1(iobase));
1259 DEBUGP(4, dev, "infolen=%d\n", infolen);
1262 msleep_interruptible(10);
1265 DEBUGP(4, dev, "timeout waiting for infoLen\n");
1270 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1272 /* numRecBytes | bit9 of numRecytes */
1273 io_read_num_rec_bytes(iobase, &dev->rlen);
1274 for (i = 0; i < 600; i++) { /* max waiting time of 2 sec */
1276 if (dev->rlen >= infolen + 4)
1279 msleep_interruptible(10);
1280 /* numRecBytes | bit9 of numRecytes */
1281 io_read_num_rec_bytes(iobase, &s);
1282 if (s > dev->rlen) {
1283 DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1284 i = 0; /* reset timeout */
1287 /* T=0: we are done when numRecBytes doesn't
1288 * increment any more and NoProcedureByte
1289 * is set and numRecBytes == bytes sent + 6
1290 * (header bytes + data + 1 for sw2)
1291 * except when the card replies an error
1292 * which means, no data will be sent back.
1294 else if (dev->proto == 0) {
1295 if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1296 /* no procedure byte received since last read */
1297 DEBUGP(1, dev, "NoProcedure byte set\n");
1300 /* procedure byte received since last read */
1301 DEBUGP(1, dev, "NoProcedure byte unset "
1302 "(reset timeout)\n");
1303 dev->procbyte = inb(REG_FLAGS1(iobase));
1304 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1306 i = 0; /* resettimeout */
1308 if (inb(REG_FLAGS0(iobase)) & 0x08) {
1309 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1314 infolen = inb(REG_FLAGS1(iobase));
1317 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1321 if (dev->proto == 0) {
1322 DEBUGP(1, dev, "Wait for T0Done bit to be set\n");
1323 for (i = 0; i < 1000; i++) {
1324 if (inb(REG_FLAGS0(iobase)) & 0x08)
1326 msleep_interruptible(10);
1329 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1334 dev->procbyte = inb(REG_FLAGS1(iobase));
1335 DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1338 io_read_num_rec_bytes(iobase, &dev->rlen);
1339 DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1343 /* T=1: read offset=zero, T=0: read offset=after challenge */
1344 dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1345 DEBUGP(4, dev, "dev->rlen = %i, dev->rpos = %i, nr = %i\n",
1346 dev->rlen, dev->rpos, nr);
1349 DEBUGP(4, dev, "Reset SM\n");
1350 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1353 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1354 dev->flags1 &= 0xdf;
1355 xoutb(dev->flags1, REG_FLAGS1(iobase));
1358 clear_bit(LOCK_IO, &dev->flags);
1359 wake_up_interruptible(&dev->ioq);
1360 wake_up_interruptible(&dev->readq); /* tell read we have data */
1362 /* ITSEC E2: clear write buffer */
1363 memset((char *)dev->sbuf, 0, 512);
1365 /* return error or actually written bytes */
1366 DEBUGP(2, dev, "<- cmm_write\n");
1367 return rc < 0 ? rc : nr;
1370 static void start_monitor(struct cm4000_dev *dev)
1372 DEBUGP(3, dev, "-> start_monitor\n");
1373 if (!dev->monitor_running) {
1374 DEBUGP(5, dev, "create, init and add timer\n");
1375 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1376 dev->monitor_running = 1;
1377 mod_timer(&dev->timer, jiffies);
1379 DEBUGP(5, dev, "monitor already running\n");
1380 DEBUGP(3, dev, "<- start_monitor\n");
1383 static void stop_monitor(struct cm4000_dev *dev)
1385 DEBUGP(3, dev, "-> stop_monitor\n");
1386 if (dev->monitor_running) {
1387 DEBUGP(5, dev, "stopping monitor\n");
1388 terminate_monitor(dev);
1389 /* reset monitor SM */
1390 clear_bit(IS_ATR_VALID, &dev->flags);
1391 clear_bit(IS_ATR_PRESENT, &dev->flags);
1393 DEBUGP(5, dev, "monitor already stopped\n");
1394 DEBUGP(3, dev, "<- stop_monitor\n");
1397 static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1399 struct cm4000_dev *dev = filp->private_data;
1400 unsigned int iobase = dev->p_dev->resource[0]->start;
1401 struct inode *inode = filp->f_path.dentry->d_inode;
1402 struct pcmcia_device *link;
1405 void __user *argp = (void __user *)arg;
1407 char *ioctl_names[CM_IOC_MAXNR + 1] = {
1408 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1409 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1410 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1411 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1412 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1414 DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1415 iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1420 link = dev_table[iminor(inode)];
1421 if (!pcmcia_dev_present(link)) {
1422 DEBUGP(4, dev, "DEV_OK false\n");
1426 if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1427 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1432 if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1433 DEBUGP(4, dev, "ioctype mismatch\n");
1436 if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1437 DEBUGP(4, dev, "iocnr mismatch\n");
1440 size = _IOC_SIZE(cmd);
1442 DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1443 _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1445 if (_IOC_DIR(cmd) & _IOC_READ) {
1446 if (!access_ok(VERIFY_WRITE, argp, size))
1449 if (_IOC_DIR(cmd) & _IOC_WRITE) {
1450 if (!access_ok(VERIFY_READ, argp, size))
1457 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1461 /* clear other bits, but leave inserted & powered as
1463 status = dev->flags0 & 3;
1464 if (test_bit(IS_ATR_PRESENT, &dev->flags))
1465 status |= CM_ATR_PRESENT;
1466 if (test_bit(IS_ATR_VALID, &dev->flags))
1467 status |= CM_ATR_VALID;
1468 if (test_bit(IS_CMM_ABSENT, &dev->flags))
1469 status |= CM_NO_READER;
1470 if (test_bit(IS_BAD_CARD, &dev->flags))
1471 status |= CM_BAD_CARD;
1472 if (copy_to_user(argp, &status, sizeof(int)))
1477 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1479 struct atreq __user *atreq = argp;
1481 /* allow nonblocking io and being interrupted */
1482 if (wait_event_interruptible
1484 ((filp->f_flags & O_NONBLOCK)
1485 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1487 if (filp->f_flags & O_NONBLOCK)
1495 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1497 if (copy_to_user(&(atreq->atr_len), &tmp,
1501 if (copy_to_user(atreq->atr, dev->atr,
1506 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1515 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1516 if (dev->flags0 & 0x01) {
1517 DEBUGP(4, dev, " Card inserted\n");
1519 DEBUGP(2, dev, " No card inserted\n");
1521 if (dev->flags0 & 0x02) {
1522 DEBUGP(4, dev, " Card powered\n");
1524 DEBUGP(2, dev, " Card not powered\n");
1528 /* is a card inserted and powered? */
1529 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1532 if (wait_event_interruptible
1534 ((filp->f_flags & O_NONBLOCK)
1535 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1537 if (filp->f_flags & O_NONBLOCK)
1543 /* Set Flags0 = 0x42 */
1544 DEBUGP(4, dev, "Set Flags0=0x42 \n");
1545 xoutb(0x42, REG_FLAGS0(iobase));
1546 clear_bit(IS_ATR_PRESENT, &dev->flags);
1547 clear_bit(IS_ATR_VALID, &dev->flags);
1548 dev->mstate = M_CARDOFF;
1549 clear_bit(LOCK_IO, &dev->flags);
1550 if (wait_event_interruptible
1552 ((filp->f_flags & O_NONBLOCK)
1553 || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1555 if (filp->f_flags & O_NONBLOCK)
1563 clear_bit(LOCK_IO, &dev->flags);
1564 wake_up_interruptible(&dev->ioq);
1570 struct ptsreq krnptsreq;
1572 if (copy_from_user(&krnptsreq, argp,
1573 sizeof(struct ptsreq))) {
1579 DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1580 /* wait for ATR to get valid */
1581 if (wait_event_interruptible
1583 ((filp->f_flags & O_NONBLOCK)
1584 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1586 if (filp->f_flags & O_NONBLOCK)
1593 if (wait_event_interruptible
1595 ((filp->f_flags & O_NONBLOCK)
1596 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1598 if (filp->f_flags & O_NONBLOCK)
1605 if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1606 /* auto power_on again */
1607 dev->mstate = M_FETCH_ATR;
1608 clear_bit(IS_ATR_VALID, &dev->flags);
1611 clear_bit(LOCK_IO, &dev->flags);
1612 wake_up_interruptible(&dev->ioq);
1622 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1630 static int cmm_open(struct inode *inode, struct file *filp)
1632 struct cm4000_dev *dev;
1633 struct pcmcia_device *link;
1634 int minor = iminor(inode);
1637 if (minor >= CM4000_MAX_DEV)
1641 link = dev_table[minor];
1642 if (link == NULL || !pcmcia_dev_present(link)) {
1653 filp->private_data = dev;
1655 DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1656 imajor(inode), minor, current->comm, current->pid);
1658 /* init device variables, they may be "polluted" after close
1659 * or, the device may never have been closed (i.e. open failed)
1664 /* opening will always block since the
1665 * monitor will be started by open, which
1666 * means we have to wait for ATR becoming
1667 * vaild = block until valid (or card
1670 if (filp->f_flags & O_NONBLOCK) {
1675 dev->mdelay = T_50MSEC;
1677 /* start monitoring the cardstatus */
1680 link->open = 1; /* only one open per device */
1682 DEBUGP(2, dev, "<- cmm_open\n");
1683 ret = nonseekable_open(inode, filp);
1689 static int cmm_close(struct inode *inode, struct file *filp)
1691 struct cm4000_dev *dev;
1692 struct pcmcia_device *link;
1693 int minor = iminor(inode);
1695 if (minor >= CM4000_MAX_DEV)
1698 link = dev_table[minor];
1704 DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1705 imajor(inode), minor);
1711 link->open = 0; /* only one open per device */
1712 wake_up(&dev->devq); /* socket removed? */
1714 DEBUGP(2, dev, "cmm_close\n");
1718 static void cmm_cm4000_release(struct pcmcia_device * link)
1720 struct cm4000_dev *dev = link->priv;
1722 /* dont terminate the monitor, rather rely on
1723 * close doing that for us.
1725 DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1726 while (link->open) {
1727 printk(KERN_INFO MODULE_NAME ": delaying release until "
1728 "process has terminated\n");
1729 /* note: don't interrupt us:
1730 * close the applications which own
1731 * the devices _first_ !
1733 wait_event(dev->devq, (link->open == 0));
1735 /* dev->devq=NULL; this cannot be zeroed earlier */
1736 DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1740 /*==== Interface to PCMCIA Layer =======================================*/
1742 static int cm4000_config_check(struct pcmcia_device *p_dev, void *priv_data)
1744 return pcmcia_request_io(p_dev);
1747 static int cm4000_config(struct pcmcia_device * link, int devno)
1749 struct cm4000_dev *dev;
1751 link->config_flags |= CONF_AUTO_SET_IO;
1753 /* read the config-tuples */
1754 if (pcmcia_loop_config(link, cm4000_config_check, NULL))
1757 if (pcmcia_enable_device(link))
1765 cm4000_release(link);
1769 static int cm4000_suspend(struct pcmcia_device *link)
1771 struct cm4000_dev *dev;
1779 static int cm4000_resume(struct pcmcia_device *link)
1781 struct cm4000_dev *dev;
1790 static void cm4000_release(struct pcmcia_device *link)
1792 cmm_cm4000_release(link); /* delay release until device closed */
1793 pcmcia_disable_device(link);
1796 static int cm4000_probe(struct pcmcia_device *link)
1798 struct cm4000_dev *dev;
1801 for (i = 0; i < CM4000_MAX_DEV; i++)
1802 if (dev_table[i] == NULL)
1805 if (i == CM4000_MAX_DEV) {
1806 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1810 /* create a new cm4000_cs device */
1811 dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1817 dev_table[i] = link;
1819 init_waitqueue_head(&dev->devq);
1820 init_waitqueue_head(&dev->ioq);
1821 init_waitqueue_head(&dev->atrq);
1822 init_waitqueue_head(&dev->readq);
1824 ret = cm4000_config(link, i);
1826 dev_table[i] = NULL;
1831 device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
1836 static void cm4000_detach(struct pcmcia_device *link)
1838 struct cm4000_dev *dev = link->priv;
1842 for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1843 if (dev_table[devno] == link)
1845 if (devno == CM4000_MAX_DEV)
1850 cm4000_release(link);
1852 dev_table[devno] = NULL;
1855 device_destroy(cmm_class, MKDEV(major, devno));
1860 static const struct file_operations cm4000_fops = {
1861 .owner = THIS_MODULE,
1864 .unlocked_ioctl = cmm_ioctl,
1866 .release= cmm_close,
1869 static struct pcmcia_device_id cm4000_ids[] = {
1870 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1871 PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1874 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1876 static struct pcmcia_driver cm4000_driver = {
1877 .owner = THIS_MODULE,
1878 .name = "cm4000_cs",
1879 .probe = cm4000_probe,
1880 .remove = cm4000_detach,
1881 .suspend = cm4000_suspend,
1882 .resume = cm4000_resume,
1883 .id_table = cm4000_ids,
1886 static int __init cmm_init(void)
1890 cmm_class = class_create(THIS_MODULE, "cardman_4000");
1891 if (IS_ERR(cmm_class))
1892 return PTR_ERR(cmm_class);
1894 major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1896 printk(KERN_WARNING MODULE_NAME
1897 ": could not get major number\n");
1898 class_destroy(cmm_class);
1902 rc = pcmcia_register_driver(&cm4000_driver);
1904 unregister_chrdev(major, DEVICE_NAME);
1905 class_destroy(cmm_class);
1912 static void __exit cmm_exit(void)
1914 pcmcia_unregister_driver(&cm4000_driver);
1915 unregister_chrdev(major, DEVICE_NAME);
1916 class_destroy(cmm_class);
1919 module_init(cmm_init);
1920 module_exit(cmm_exit);
1921 MODULE_LICENSE("Dual BSD/GPL");