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/cs.h>
38 #include <pcmcia/cistpl.h>
39 #include <pcmcia/cisreg.h>
40 #include <pcmcia/ciscode.h>
41 #include <pcmcia/ds.h>
43 #include <linux/cm4000_cs.h>
45 /* #define ATR_CSUM */
47 #define reader_to_dev(x) (&x->p_dev->dev)
49 /* n (debug level) is ignored */
50 /* additional debug output may be enabled by re-compiling with
52 /* #define CM4000_DEBUG */
53 #define DEBUGP(n, rdr, x, args...) do { \
54 dev_dbg(reader_to_dev(rdr), "%s:" x, \
55 __func__ , ## args); \
58 static char *version = "cm4000_cs.c v2.4.0gm6 - All bugs added by Harald Welte";
61 #define T_10MSEC msecs_to_jiffies(10)
62 #define T_20MSEC msecs_to_jiffies(20)
63 #define T_40MSEC msecs_to_jiffies(40)
64 #define T_50MSEC msecs_to_jiffies(50)
65 #define T_100MSEC msecs_to_jiffies(100)
66 #define T_500MSEC msecs_to_jiffies(500)
68 static void cm4000_release(struct pcmcia_device *link);
70 static int major; /* major number we get from the kernel */
72 /* note: the first state has to have number 0 always */
75 #define M_TIMEOUT_WAIT 1
76 #define M_READ_ATR_LEN 2
78 #define M_ATR_PRESENT 4
83 #define LOCK_MONITOR 1
85 #define IS_AUTOPPS_ACT 6
86 #define IS_PROCBYTE_PRESENT 7
90 #define IS_ATR_PRESENT 11
91 #define IS_ATR_VALID 12
92 #define IS_CMM_ABSENT 13
93 #define IS_BAD_LENGTH 14
94 #define IS_BAD_CSUM 15
95 #define IS_BAD_CARD 16
97 #define REG_FLAGS0(x) (x + 0)
98 #define REG_FLAGS1(x) (x + 1)
99 #define REG_NUM_BYTES(x) (x + 2)
100 #define REG_BUF_ADDR(x) (x + 3)
101 #define REG_BUF_DATA(x) (x + 4)
102 #define REG_NUM_SEND(x) (x + 5)
103 #define REG_BAUDRATE(x) (x + 6)
104 #define REG_STOPBITS(x) (x + 7)
107 struct pcmcia_device *p_dev;
109 unsigned char atr[MAX_ATR];
110 unsigned char rbuf[512];
111 unsigned char sbuf[512];
113 wait_queue_head_t devq; /* when removing cardman must not be
116 wait_queue_head_t ioq; /* if IO is locked, wait on this Q */
117 wait_queue_head_t atrq; /* wait for ATR valid */
118 wait_queue_head_t readq; /* used by write to wake blk.read */
120 /* warning: do not move this fields.
121 * initialising to zero depends on it - see ZERO_DEV below. */
122 unsigned char atr_csum;
123 unsigned char atr_len_retry;
124 unsigned short atr_len;
125 unsigned short rlen; /* bytes avail. after write */
126 unsigned short rpos; /* latest read pos. write zeroes */
127 unsigned char procbyte; /* T=0 procedure byte */
128 unsigned char mstate; /* state of card monitor */
129 unsigned char cwarn; /* slow down warning */
130 unsigned char flags0; /* cardman IO-flags 0 */
131 unsigned char flags1; /* cardman IO-flags 1 */
132 unsigned int mdelay; /* variable monitor speeds, in jiffies */
134 unsigned int baudv; /* baud value for speed */
136 unsigned char proto; /* T=0, T=1, ... */
137 unsigned long flags; /* lock+flags (MONITOR,IO,ATR) * for concurrent
140 unsigned char pts[4];
142 struct timer_list timer; /* used to keep monitor running */
146 #define ZERO_DEV(dev) \
147 memset(&dev->atr_csum,0, \
148 sizeof(struct cm4000_dev) - \
149 offsetof(struct cm4000_dev, atr_csum))
151 static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
152 static struct class *cmm_class;
154 /* This table doesn't use spaces after the comma between fields and thus
155 * violates CodingStyle. However, I don't really think wrapping it around will
156 * make it any clearer to read -HW */
157 static unsigned char fi_di_table[10][14] = {
158 /*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */
160 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
161 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
162 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
163 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
164 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
165 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
166 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
167 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
168 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
169 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
176 static inline void xoutb(unsigned char val, unsigned short port)
178 pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
181 static inline unsigned char xinb(unsigned short port)
186 pr_debug("%.2x=inb(%.4x)\n", val, port);
192 static inline unsigned char invert_revert(unsigned char ch)
197 static void str_invert_revert(unsigned char *b, int len)
201 for (i = 0; i < len; i++)
202 b[i] = invert_revert(b[i]);
205 #define ATRLENCK(dev,pos) \
206 if (pos>=dev->atr_len || pos>=MAX_ATR) \
209 static unsigned int calc_baudv(unsigned char fidi)
211 unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
217 switch ((fidi >> 4) & 0x0F) {
266 switch (fidi & 0x0F) {
302 return (wcrcf / wbrcf);
305 static unsigned short io_read_num_rec_bytes(unsigned int iobase,
313 tmp = inb(REG_NUM_BYTES(iobase)) |
314 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
320 static int parse_atr(struct cm4000_dev *dev)
322 unsigned char any_t1, any_t0;
323 unsigned char ch, ifno;
326 DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
328 if (dev->atr_len < 3) {
329 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
333 if (dev->atr[0] == 0x3f)
334 set_bit(IS_INVREV, &dev->flags);
336 clear_bit(IS_INVREV, &dev->flags);
340 dev->proto = 0; /* XXX PROTO */
341 any_t1 = any_t0 = done = 0;
342 dev->ta1 = 0x11; /* defaults to 9600 baud */
344 if (ifno == 1 && (ch & 0x10)) {
345 /* read first interface byte and TA1 is present */
346 dev->ta1 = dev->atr[2];
347 DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
349 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
354 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
355 ix += ((ch & 0x10) >> 4) /* no of int.face chars */
358 + ((ch & 0x80) >> 7);
359 /* ATRLENCK(dev,ix); */
360 if (ch & 0x80) { /* TDi */
364 DEBUGP(5, dev, "card is capable of T=1\n");
367 DEBUGP(5, dev, "card is capable of T=0\n");
373 DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
374 ix, dev->atr[1] & 15, any_t1);
375 if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
376 DEBUGP(5, dev, "length error\n");
380 set_bit(IS_ANY_T0, &dev->flags);
382 if (any_t1) { /* compute csum */
385 for (i = 1; i < dev->atr_len; i++)
386 dev->atr_csum ^= dev->atr[i];
388 set_bit(IS_BAD_CSUM, &dev->flags);
389 DEBUGP(5, dev, "bad checksum\n");
394 dev->proto = 1; /* XXX PROTO */
395 set_bit(IS_ANY_T1, &dev->flags);
407 static struct card_fixup card_fixups[] = {
409 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
414 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
421 static void set_cardparameter(struct cm4000_dev *dev)
424 unsigned int iobase = dev->p_dev->resource[0]->start;
425 u_int8_t stopbits = 0x02; /* ISO default */
427 DEBUGP(3, dev, "-> set_cardparameter\n");
429 dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
430 xoutb(dev->flags1, REG_FLAGS1(iobase));
431 DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
434 xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
436 DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
437 ((dev->baudv - 1) & 0xFF));
440 for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
441 if (!memcmp(dev->atr, card_fixups[i].atr,
442 card_fixups[i].atr_len))
443 stopbits = card_fixups[i].stopbits;
445 xoutb(stopbits, REG_STOPBITS(iobase));
447 DEBUGP(3, dev, "<- set_cardparameter\n");
450 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
453 unsigned long tmp, i;
454 unsigned short num_bytes_read;
455 unsigned char pts_reply[4];
457 unsigned int iobase = dev->p_dev->resource[0]->start;
461 DEBUGP(3, dev, "-> set_protocol\n");
462 DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
463 "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
464 "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
465 (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
468 /* Fill PTS structure */
471 tmp = ptsreq->protocol;
472 while ((tmp = (tmp >> 1)) > 0)
474 dev->proto = dev->pts[1]; /* Set new protocol */
475 dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
477 /* Correct Fi/Di according to CM4000 Fi/Di table */
478 DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
479 /* set Fi/Di according to ATR TA(1) */
480 dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
482 /* Calculate PCK character */
483 dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
485 DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
486 dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
488 /* check card convention */
489 if (test_bit(IS_INVREV, &dev->flags))
490 str_invert_revert(dev->pts, 4);
493 xoutb(0x80, REG_FLAGS0(iobase));
495 /* Enable access to the message buffer */
496 DEBUGP(5, dev, "Enable access to the messages buffer\n");
497 dev->flags1 = 0x20 /* T_Active */
498 | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
499 | ((dev->baudv >> 8) & 0x01); /* MSB-baud */
500 xoutb(dev->flags1, REG_FLAGS1(iobase));
502 DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
505 /* write challenge to the buffer */
506 DEBUGP(5, dev, "Write challenge to buffer: ");
507 for (i = 0; i < 4; i++) {
508 xoutb(i, REG_BUF_ADDR(iobase));
509 xoutb(dev->pts[i], REG_BUF_DATA(iobase)); /* buf data */
511 pr_debug("0x%.2x ", dev->pts[i]);
518 /* set number of bytes to write */
519 DEBUGP(5, dev, "Set number of bytes to write\n");
520 xoutb(0x04, REG_NUM_SEND(iobase));
522 /* Trigger CARDMAN CONTROLLER */
523 xoutb(0x50, REG_FLAGS0(iobase));
525 /* Monitor progress */
526 /* wait for xmit done */
527 DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
529 for (i = 0; i < 100; i++) {
530 if (inb(REG_FLAGS0(iobase)) & 0x08) {
531 DEBUGP(5, dev, "NumRecBytes is valid\n");
537 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
540 goto exit_setprotocol;
543 DEBUGP(5, dev, "Reading NumRecBytes\n");
544 for (i = 0; i < 100; i++) {
545 io_read_num_rec_bytes(iobase, &num_bytes_read);
546 if (num_bytes_read >= 4) {
547 DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
553 /* check whether it is a short PTS reply? */
554 if (num_bytes_read == 3)
558 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
560 goto exit_setprotocol;
563 DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
564 xoutb(0x80, REG_FLAGS0(iobase));
567 DEBUGP(5, dev, "Read PPS reply\n");
568 for (i = 0; i < num_bytes_read; i++) {
569 xoutb(i, REG_BUF_ADDR(iobase));
570 pts_reply[i] = inb(REG_BUF_DATA(iobase));
574 DEBUGP(2, dev, "PTSreply: ");
575 for (i = 0; i < num_bytes_read; i++) {
576 pr_debug("0x%.2x ", pts_reply[i]);
579 #endif /* CM4000_DEBUG */
581 DEBUGP(5, dev, "Clear Tactive in Flags1\n");
582 xoutb(0x20, REG_FLAGS1(iobase));
584 /* Compare ptsreq and ptsreply */
585 if ((dev->pts[0] == pts_reply[0]) &&
586 (dev->pts[1] == pts_reply[1]) &&
587 (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
588 /* setcardparameter according to PPS */
589 dev->baudv = calc_baudv(dev->pts[2]);
590 set_cardparameter(dev);
591 } else if ((dev->pts[0] == pts_reply[0]) &&
592 ((dev->pts[1] & 0xef) == pts_reply[1]) &&
593 ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
594 /* short PTS reply, set card parameter to default values */
595 dev->baudv = calc_baudv(0x11);
596 set_cardparameter(dev);
601 DEBUGP(3, dev, "<- set_protocol\n");
605 static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
608 /* note: statemachine is assumed to be reset */
609 if (inb(REG_FLAGS0(iobase)) & 8) {
610 clear_bit(IS_ATR_VALID, &dev->flags);
611 set_bit(IS_CMM_ABSENT, &dev->flags);
612 return 0; /* detect CMM = 1 -> failure */
614 /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
615 xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
616 if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
617 clear_bit(IS_ATR_VALID, &dev->flags);
618 set_bit(IS_CMM_ABSENT, &dev->flags);
619 return 0; /* detect CMM=0 -> failure */
621 /* clear detectCMM again by restoring original flags1 */
622 xoutb(dev->flags1, REG_FLAGS1(iobase));
626 static void terminate_monitor(struct cm4000_dev *dev)
629 /* tell the monitor to stop and wait until
632 DEBUGP(3, dev, "-> terminate_monitor\n");
633 wait_event_interruptible(dev->devq,
634 test_and_set_bit(LOCK_MONITOR,
635 (void *)&dev->flags));
637 /* now, LOCK_MONITOR has been set.
638 * allow a last cycle in the monitor.
639 * the monitor will indicate that it has
640 * finished by clearing this bit.
642 DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
643 while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
646 DEBUGP(5, dev, "Delete timer\n");
647 del_timer_sync(&dev->timer);
649 dev->monitor_running = 0;
652 DEBUGP(3, dev, "<- terminate_monitor\n");
656 * monitor the card every 50msec. as a side-effect, retrieve the
657 * atr once a card is inserted. another side-effect of retrieving the
658 * atr is that the card will be powered on, so there is no need to
659 * power on the card explictely from the application: the driver
660 * is already doing that for you.
663 static void monitor_card(unsigned long p)
665 struct cm4000_dev *dev = (struct cm4000_dev *) p;
666 unsigned int iobase = dev->p_dev->resource[0]->start;
668 struct ptsreq ptsreq;
671 DEBUGP(7, dev, "-> monitor_card\n");
673 /* if someone has set the lock for us: we're done! */
674 if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
675 DEBUGP(4, dev, "About to stop monitor\n");
679 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
680 dev->mstate = M_FETCH_ATR;
681 clear_bit(LOCK_MONITOR, &dev->flags);
682 /* close et al. are sleeping on devq, so wake it */
683 wake_up_interruptible(&dev->devq);
684 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
688 /* try to lock io: if it is already locked, just add another timer */
689 if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
690 DEBUGP(4, dev, "Couldn't get IO lock\n");
691 goto return_with_timer;
694 /* is a card/a reader inserted at all ? */
695 dev->flags0 = xinb(REG_FLAGS0(iobase));
696 DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
697 DEBUGP(7, dev, "smartcard present: %s\n",
698 dev->flags0 & 1 ? "yes" : "no");
699 DEBUGP(7, dev, "cardman present: %s\n",
700 dev->flags0 == 0xff ? "no" : "yes");
702 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
703 || dev->flags0 == 0xff) { /* no cardman inserted */
707 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
708 dev->mstate = M_FETCH_ATR;
710 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
712 if (dev->flags0 == 0xff) {
713 DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
714 set_bit(IS_CMM_ABSENT, &dev->flags);
715 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
716 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
717 "(card is removed)\n");
718 clear_bit(IS_CMM_ABSENT, &dev->flags);
722 } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
723 /* cardman and card present but cardman was absent before
724 * (after suspend with inserted card) */
725 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
726 clear_bit(IS_CMM_ABSENT, &dev->flags);
729 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
730 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
734 switch (dev->mstate) {
735 unsigned char flags0;
737 DEBUGP(4, dev, "M_CARDOFF\n");
738 flags0 = inb(REG_FLAGS0(iobase));
740 /* wait until Flags0 indicate power is off */
741 dev->mdelay = T_10MSEC;
743 /* Flags0 indicate power off and no card inserted now;
744 * Reset CARDMAN CONTROLLER */
745 xoutb(0x80, REG_FLAGS0(iobase));
747 /* prepare for fetching ATR again: after card off ATR
748 * is read again automatically */
752 dev->atr_len_retry = dev->cwarn = 0;
753 dev->mstate = M_FETCH_ATR;
755 /* minimal gap between CARDOFF and read ATR is 50msec */
756 dev->mdelay = T_50MSEC;
760 DEBUGP(4, dev, "M_FETCH_ATR\n");
761 xoutb(0x80, REG_FLAGS0(iobase));
762 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
763 dev->baudv = 0x173; /* 9600 */
764 xoutb(0x02, REG_STOPBITS(iobase)); /* stopbits=2 */
765 xoutb(0x73, REG_BAUDRATE(iobase)); /* baud value */
766 xoutb(0x21, REG_FLAGS1(iobase)); /* T_Active=1, baud
768 /* warm start vs. power on: */
769 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
770 dev->mdelay = T_40MSEC;
771 dev->mstate = M_TIMEOUT_WAIT;
774 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
776 io_read_num_rec_bytes(iobase, &dev->atr_len);
777 dev->mdelay = T_10MSEC;
778 dev->mstate = M_READ_ATR_LEN;
781 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
782 /* infinite loop possible, since there is no timeout */
784 #define MAX_ATR_LEN_RETRY 100
786 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
787 if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) { /* + XX msec */
788 dev->mdelay = T_10MSEC;
789 dev->mstate = M_READ_ATR;
793 dev->atr_len_retry = 0; /* set new timeout */
796 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
799 DEBUGP(4, dev, "M_READ_ATR\n");
800 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
801 for (i = 0; i < dev->atr_len; i++) {
802 xoutb(i, REG_BUF_ADDR(iobase));
803 dev->atr[i] = inb(REG_BUF_DATA(iobase));
805 /* Deactivate T_Active flags */
806 DEBUGP(4, dev, "Deactivate T_Active flags\n");
808 xoutb(dev->flags1, REG_FLAGS1(iobase));
810 /* atr is present (which doesnt mean it's valid) */
811 set_bit(IS_ATR_PRESENT, &dev->flags);
812 if (dev->atr[0] == 0x03)
813 str_invert_revert(dev->atr, dev->atr_len);
814 atrc = parse_atr(dev);
815 if (atrc == 0) { /* atr invalid */
817 dev->mstate = M_BAD_CARD;
819 dev->mdelay = T_50MSEC;
820 dev->mstate = M_ATR_PRESENT;
821 set_bit(IS_ATR_VALID, &dev->flags);
824 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
825 DEBUGP(4, dev, "monitor_card: ATR valid\n");
826 /* if ta1 == 0x11, no PPS necessary (default values) */
827 /* do not do PPS with multi protocol cards */
828 if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
829 (dev->ta1 != 0x11) &&
830 !(test_bit(IS_ANY_T0, &dev->flags) &&
831 test_bit(IS_ANY_T1, &dev->flags))) {
832 DEBUGP(4, dev, "Perform AUTOPPS\n");
833 set_bit(IS_AUTOPPS_ACT, &dev->flags);
834 ptsreq.protocol = ptsreq.protocol =
835 (0x01 << dev->proto);
840 if (set_protocol(dev, &ptsreq) == 0) {
841 DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
842 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
843 wake_up_interruptible(&dev->atrq);
845 DEBUGP(4, dev, "AUTOPPS failed: "
846 "repower using defaults\n");
847 /* prepare for repowering */
848 clear_bit(IS_ATR_PRESENT, &dev->flags);
849 clear_bit(IS_ATR_VALID, &dev->flags);
853 dev->atr_len_retry = dev->cwarn = 0;
854 dev->mstate = M_FETCH_ATR;
856 dev->mdelay = T_50MSEC;
859 /* for cards which use slightly different
860 * params (extra guard time) */
861 set_cardparameter(dev);
862 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
863 DEBUGP(4, dev, "AUTOPPS already active "
864 "2nd try:use default values\n");
865 if (dev->ta1 == 0x11)
866 DEBUGP(4, dev, "No AUTOPPS necessary "
868 if (test_bit(IS_ANY_T0, &dev->flags)
869 && test_bit(IS_ANY_T1, &dev->flags))
870 DEBUGP(4, dev, "Do NOT perform AUTOPPS "
871 "with multiprotocol cards\n");
872 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
873 wake_up_interruptible(&dev->atrq);
876 DEBUGP(4, dev, "ATR invalid\n");
877 wake_up_interruptible(&dev->atrq);
881 DEBUGP(4, dev, "M_BAD_CARD\n");
882 /* slow down warning, but prompt immediately after insertion */
883 if (dev->cwarn == 0 || dev->cwarn == 10) {
884 set_bit(IS_BAD_CARD, &dev->flags);
885 dev_warn(&dev->p_dev->dev, MODULE_NAME ": ");
886 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
887 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
888 "be zero) failed\n", dev->atr_csum);
891 else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
892 DEBUGP(4, dev, "ATR length error\n");
894 DEBUGP(4, dev, "card damaged or wrong way "
899 wake_up_interruptible(&dev->atrq); /* wake open */
902 dev->mdelay = T_100MSEC;
903 dev->mstate = M_FETCH_ATR;
906 DEBUGP(7, dev, "Unknown action\n");
911 DEBUGP(7, dev, "release_io\n");
912 clear_bit(LOCK_IO, &dev->flags);
913 wake_up_interruptible(&dev->ioq); /* whoever needs IO */
916 DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
917 mod_timer(&dev->timer, jiffies + dev->mdelay);
918 clear_bit(LOCK_MONITOR, &dev->flags);
921 /* Interface to userland (file_operations) */
923 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
926 struct cm4000_dev *dev = filp->private_data;
927 unsigned int iobase = dev->p_dev->resource[0]->start;
931 DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
933 if (count == 0) /* according to manpage */
936 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
937 test_bit(IS_CMM_ABSENT, &dev->flags))
940 if (test_bit(IS_BAD_CSUM, &dev->flags))
943 /* also see the note about this in cmm_write */
944 if (wait_event_interruptible
946 ((filp->f_flags & O_NONBLOCK)
947 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
948 if (filp->f_flags & O_NONBLOCK)
953 if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
956 /* this one implements blocking IO */
957 if (wait_event_interruptible
959 ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
960 if (filp->f_flags & O_NONBLOCK)
966 if (wait_event_interruptible
968 ((filp->f_flags & O_NONBLOCK)
969 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
970 if (filp->f_flags & O_NONBLOCK)
976 dev->flags0 = inb(REG_FLAGS0(iobase));
977 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
978 || dev->flags0 == 0xff) { /* no cardman inserted */
979 clear_bit(IS_ATR_VALID, &dev->flags);
980 if (dev->flags0 & 1) {
981 set_bit(IS_CMM_ABSENT, &dev->flags);
988 DEBUGP(4, dev, "begin read answer\n");
989 j = min(count, (size_t)(dev->rlen - dev->rpos));
993 DEBUGP(4, dev, "read1 j=%d\n", j);
994 for (i = 0; i < j; i++) {
995 xoutb(k++, REG_BUF_ADDR(iobase));
996 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
998 j = min(count, (size_t)(dev->rlen - dev->rpos));
1000 DEBUGP(4, dev, "read2 j=%d\n", j);
1001 dev->flags1 |= 0x10; /* MSB buf addr set */
1002 xoutb(dev->flags1, REG_FLAGS1(iobase));
1003 for (; i < j; i++) {
1004 xoutb(k++, REG_BUF_ADDR(iobase));
1005 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1009 if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) {
1010 DEBUGP(4, dev, "T=0 and count > buffer\n");
1011 dev->rbuf[i] = dev->rbuf[i - 1];
1012 dev->rbuf[i - 1] = dev->procbyte;
1017 dev->rpos = dev->rlen + 1;
1019 /* Clear T1Active */
1020 DEBUGP(4, dev, "Clear T1Active\n");
1021 dev->flags1 &= 0xdf;
1022 xoutb(dev->flags1, REG_FLAGS1(iobase));
1024 xoutb(0, REG_FLAGS1(iobase)); /* clear detectCMM */
1025 /* last check before exit */
1026 if (!io_detect_cm4000(iobase, dev)) {
1031 if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1032 str_invert_revert(dev->rbuf, count);
1034 if (copy_to_user(buf, dev->rbuf, count))
1038 clear_bit(LOCK_IO, &dev->flags);
1039 wake_up_interruptible(&dev->ioq);
1041 DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1042 (rc < 0 ? rc : count));
1043 return rc < 0 ? rc : count;
1046 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1047 size_t count, loff_t *ppos)
1049 struct cm4000_dev *dev = filp->private_data;
1050 unsigned int iobase = dev->p_dev->resource[0]->start;
1053 unsigned char infolen;
1054 unsigned char sendT0;
1055 unsigned short nsend;
1060 DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1062 if (count == 0) /* according to manpage */
1065 if (dev->proto == 0 && count < 4) {
1066 /* T0 must have at least 4 bytes */
1067 DEBUGP(4, dev, "T0 short write\n");
1071 nr = count & 0x1ff; /* max bytes to write */
1073 sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1075 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1076 test_bit(IS_CMM_ABSENT, &dev->flags))
1079 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1080 DEBUGP(4, dev, "bad csum\n");
1085 * wait for atr to become valid.
1086 * note: it is important to lock this code. if we dont, the monitor
1087 * could be run between test_bit and the call to sleep on the
1088 * atr-queue. if *then* the monitor detects atr valid, it will wake up
1089 * any process on the atr-queue, *but* since we have been interrupted,
1090 * we do not yet sleep on this queue. this would result in a missed
1091 * wake_up and the calling process would sleep forever (until
1092 * interrupted). also, do *not* restore_flags before sleep_on, because
1093 * this could result in the same situation!
1095 if (wait_event_interruptible
1097 ((filp->f_flags & O_NONBLOCK)
1098 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1099 if (filp->f_flags & O_NONBLOCK)
1101 return -ERESTARTSYS;
1104 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1105 DEBUGP(4, dev, "invalid ATR\n");
1110 if (wait_event_interruptible
1112 ((filp->f_flags & O_NONBLOCK)
1113 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1114 if (filp->f_flags & O_NONBLOCK)
1116 return -ERESTARTSYS;
1119 if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1123 dev->flags0 = inb(REG_FLAGS0(iobase));
1124 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
1125 || dev->flags0 == 0xff) { /* no cardman inserted */
1126 clear_bit(IS_ATR_VALID, &dev->flags);
1127 if (dev->flags0 & 1) {
1128 set_bit(IS_CMM_ABSENT, &dev->flags);
1131 DEBUGP(4, dev, "IO error\n");
1137 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1139 if (!io_detect_cm4000(iobase, dev)) {
1144 /* reflect T=0 send/read mode in flags1 */
1145 dev->flags1 |= (sendT0);
1147 set_cardparameter(dev);
1149 /* dummy read, reset flag procedure received */
1150 tmp = inb(REG_FLAGS1(iobase));
1152 dev->flags1 = 0x20 /* T_Active */
1154 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity */
1155 | (((dev->baudv - 1) & 0x0100) >> 8); /* MSB-Baud */
1156 DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1157 xoutb(dev->flags1, REG_FLAGS1(iobase));
1160 DEBUGP(4, dev, "Xmit data\n");
1161 for (i = 0; i < nr; i++) {
1163 dev->flags1 = 0x20 /* T_Active */
1164 | (sendT0) /* SendT0 */
1165 /* inverse parity: */
1166 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1167 | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1168 | 0x10; /* set address high */
1169 DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1170 "high\n", dev->flags1);
1171 xoutb(dev->flags1, REG_FLAGS1(iobase));
1173 if (test_bit(IS_INVREV, &dev->flags)) {
1174 DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1175 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1176 invert_revert(dev->sbuf[i]));
1177 xoutb(i, REG_BUF_ADDR(iobase));
1178 xoutb(invert_revert(dev->sbuf[i]),
1179 REG_BUF_DATA(iobase));
1181 xoutb(i, REG_BUF_ADDR(iobase));
1182 xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1185 DEBUGP(4, dev, "Xmit done\n");
1187 if (dev->proto == 0) {
1188 /* T=0 proto: 0 byte reply */
1190 DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1191 xoutb(i, REG_BUF_ADDR(iobase));
1192 if (test_bit(IS_INVREV, &dev->flags))
1193 xoutb(0xff, REG_BUF_DATA(iobase));
1195 xoutb(0x00, REG_BUF_DATA(iobase));
1205 nsend = 5 + (unsigned char)dev->sbuf[4];
1206 if (dev->sbuf[4] == 0)
1213 /* T0: output procedure byte */
1214 if (test_bit(IS_INVREV, &dev->flags)) {
1215 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1216 "0x%.2x\n", invert_revert(dev->sbuf[1]));
1217 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1219 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1220 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1223 DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1224 (unsigned char)(nsend & 0xff));
1225 xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1227 DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1228 0x40 /* SM_Active */
1229 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1230 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1231 |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1232 xoutb(0x40 /* SM_Active */
1233 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1234 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1235 |(nsend & 0x100) >> 8, /* MSB numSendBytes */
1236 REG_FLAGS0(iobase));
1238 /* wait for xmit done */
1239 if (dev->proto == 1) {
1240 DEBUGP(4, dev, "Wait for xmit done\n");
1241 for (i = 0; i < 1000; i++) {
1242 if (inb(REG_FLAGS0(iobase)) & 0x08)
1244 msleep_interruptible(10);
1247 DEBUGP(4, dev, "timeout waiting for xmit done\n");
1253 /* T=1: wait for infoLen */
1257 /* wait until infoLen is valid */
1258 for (i = 0; i < 6000; i++) { /* max waiting time of 1 min */
1259 io_read_num_rec_bytes(iobase, &s);
1261 infolen = inb(REG_FLAGS1(iobase));
1262 DEBUGP(4, dev, "infolen=%d\n", infolen);
1265 msleep_interruptible(10);
1268 DEBUGP(4, dev, "timeout waiting for infoLen\n");
1273 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1275 /* numRecBytes | bit9 of numRecytes */
1276 io_read_num_rec_bytes(iobase, &dev->rlen);
1277 for (i = 0; i < 600; i++) { /* max waiting time of 2 sec */
1279 if (dev->rlen >= infolen + 4)
1282 msleep_interruptible(10);
1283 /* numRecBytes | bit9 of numRecytes */
1284 io_read_num_rec_bytes(iobase, &s);
1285 if (s > dev->rlen) {
1286 DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1287 i = 0; /* reset timeout */
1290 /* T=0: we are done when numRecBytes doesn't
1291 * increment any more and NoProcedureByte
1292 * is set and numRecBytes == bytes sent + 6
1293 * (header bytes + data + 1 for sw2)
1294 * except when the card replies an error
1295 * which means, no data will be sent back.
1297 else if (dev->proto == 0) {
1298 if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1299 /* no procedure byte received since last read */
1300 DEBUGP(1, dev, "NoProcedure byte set\n");
1303 /* procedure byte received since last read */
1304 DEBUGP(1, dev, "NoProcedure byte unset "
1305 "(reset timeout)\n");
1306 dev->procbyte = inb(REG_FLAGS1(iobase));
1307 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1309 i = 0; /* resettimeout */
1311 if (inb(REG_FLAGS0(iobase)) & 0x08) {
1312 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1317 infolen = inb(REG_FLAGS1(iobase));
1320 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1324 if (dev->proto == 0) {
1325 DEBUGP(1, dev, "Wait for T0Done bit to be set\n");
1326 for (i = 0; i < 1000; i++) {
1327 if (inb(REG_FLAGS0(iobase)) & 0x08)
1329 msleep_interruptible(10);
1332 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1337 dev->procbyte = inb(REG_FLAGS1(iobase));
1338 DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1341 io_read_num_rec_bytes(iobase, &dev->rlen);
1342 DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1346 /* T=1: read offset=zero, T=0: read offset=after challenge */
1347 dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1348 DEBUGP(4, dev, "dev->rlen = %i, dev->rpos = %i, nr = %i\n",
1349 dev->rlen, dev->rpos, nr);
1352 DEBUGP(4, dev, "Reset SM\n");
1353 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1356 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1357 dev->flags1 &= 0xdf;
1358 xoutb(dev->flags1, REG_FLAGS1(iobase));
1361 clear_bit(LOCK_IO, &dev->flags);
1362 wake_up_interruptible(&dev->ioq);
1363 wake_up_interruptible(&dev->readq); /* tell read we have data */
1365 /* ITSEC E2: clear write buffer */
1366 memset((char *)dev->sbuf, 0, 512);
1368 /* return error or actually written bytes */
1369 DEBUGP(2, dev, "<- cmm_write\n");
1370 return rc < 0 ? rc : nr;
1373 static void start_monitor(struct cm4000_dev *dev)
1375 DEBUGP(3, dev, "-> start_monitor\n");
1376 if (!dev->monitor_running) {
1377 DEBUGP(5, dev, "create, init and add timer\n");
1378 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1379 dev->monitor_running = 1;
1380 mod_timer(&dev->timer, jiffies);
1382 DEBUGP(5, dev, "monitor already running\n");
1383 DEBUGP(3, dev, "<- start_monitor\n");
1386 static void stop_monitor(struct cm4000_dev *dev)
1388 DEBUGP(3, dev, "-> stop_monitor\n");
1389 if (dev->monitor_running) {
1390 DEBUGP(5, dev, "stopping monitor\n");
1391 terminate_monitor(dev);
1392 /* reset monitor SM */
1393 clear_bit(IS_ATR_VALID, &dev->flags);
1394 clear_bit(IS_ATR_PRESENT, &dev->flags);
1396 DEBUGP(5, dev, "monitor already stopped\n");
1397 DEBUGP(3, dev, "<- stop_monitor\n");
1400 static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1402 struct cm4000_dev *dev = filp->private_data;
1403 unsigned int iobase = dev->p_dev->resource[0]->start;
1404 struct inode *inode = filp->f_path.dentry->d_inode;
1405 struct pcmcia_device *link;
1408 void __user *argp = (void __user *)arg;
1410 char *ioctl_names[CM_IOC_MAXNR + 1] = {
1411 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1412 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1413 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1414 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1415 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1417 DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1418 iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1423 link = dev_table[iminor(inode)];
1424 if (!pcmcia_dev_present(link)) {
1425 DEBUGP(4, dev, "DEV_OK false\n");
1429 if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1430 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1435 if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1436 DEBUGP(4, dev, "ioctype mismatch\n");
1439 if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1440 DEBUGP(4, dev, "iocnr mismatch\n");
1443 size = _IOC_SIZE(cmd);
1445 DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1446 _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1448 if (_IOC_DIR(cmd) & _IOC_READ) {
1449 if (!access_ok(VERIFY_WRITE, argp, size))
1452 if (_IOC_DIR(cmd) & _IOC_WRITE) {
1453 if (!access_ok(VERIFY_READ, argp, size))
1460 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1464 /* clear other bits, but leave inserted & powered as
1466 status = dev->flags0 & 3;
1467 if (test_bit(IS_ATR_PRESENT, &dev->flags))
1468 status |= CM_ATR_PRESENT;
1469 if (test_bit(IS_ATR_VALID, &dev->flags))
1470 status |= CM_ATR_VALID;
1471 if (test_bit(IS_CMM_ABSENT, &dev->flags))
1472 status |= CM_NO_READER;
1473 if (test_bit(IS_BAD_CARD, &dev->flags))
1474 status |= CM_BAD_CARD;
1475 if (copy_to_user(argp, &status, sizeof(int)))
1480 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1482 struct atreq __user *atreq = argp;
1484 /* allow nonblocking io and being interrupted */
1485 if (wait_event_interruptible
1487 ((filp->f_flags & O_NONBLOCK)
1488 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1490 if (filp->f_flags & O_NONBLOCK)
1498 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1500 if (copy_to_user(&(atreq->atr_len), &tmp,
1504 if (copy_to_user(atreq->atr, dev->atr,
1509 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1518 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1519 if (dev->flags0 & 0x01) {
1520 DEBUGP(4, dev, " Card inserted\n");
1522 DEBUGP(2, dev, " No card inserted\n");
1524 if (dev->flags0 & 0x02) {
1525 DEBUGP(4, dev, " Card powered\n");
1527 DEBUGP(2, dev, " Card not powered\n");
1531 /* is a card inserted and powered? */
1532 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1535 if (wait_event_interruptible
1537 ((filp->f_flags & O_NONBLOCK)
1538 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1540 if (filp->f_flags & O_NONBLOCK)
1546 /* Set Flags0 = 0x42 */
1547 DEBUGP(4, dev, "Set Flags0=0x42 \n");
1548 xoutb(0x42, REG_FLAGS0(iobase));
1549 clear_bit(IS_ATR_PRESENT, &dev->flags);
1550 clear_bit(IS_ATR_VALID, &dev->flags);
1551 dev->mstate = M_CARDOFF;
1552 clear_bit(LOCK_IO, &dev->flags);
1553 if (wait_event_interruptible
1555 ((filp->f_flags & O_NONBLOCK)
1556 || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1558 if (filp->f_flags & O_NONBLOCK)
1566 clear_bit(LOCK_IO, &dev->flags);
1567 wake_up_interruptible(&dev->ioq);
1573 struct ptsreq krnptsreq;
1575 if (copy_from_user(&krnptsreq, argp,
1576 sizeof(struct ptsreq))) {
1582 DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1583 /* wait for ATR to get valid */
1584 if (wait_event_interruptible
1586 ((filp->f_flags & O_NONBLOCK)
1587 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1589 if (filp->f_flags & O_NONBLOCK)
1596 if (wait_event_interruptible
1598 ((filp->f_flags & O_NONBLOCK)
1599 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1601 if (filp->f_flags & O_NONBLOCK)
1608 if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1609 /* auto power_on again */
1610 dev->mstate = M_FETCH_ATR;
1611 clear_bit(IS_ATR_VALID, &dev->flags);
1614 clear_bit(LOCK_IO, &dev->flags);
1615 wake_up_interruptible(&dev->ioq);
1625 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1633 static int cmm_open(struct inode *inode, struct file *filp)
1635 struct cm4000_dev *dev;
1636 struct pcmcia_device *link;
1637 int minor = iminor(inode);
1640 if (minor >= CM4000_MAX_DEV)
1644 link = dev_table[minor];
1645 if (link == NULL || !pcmcia_dev_present(link)) {
1656 filp->private_data = dev;
1658 DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1659 imajor(inode), minor, current->comm, current->pid);
1661 /* init device variables, they may be "polluted" after close
1662 * or, the device may never have been closed (i.e. open failed)
1667 /* opening will always block since the
1668 * monitor will be started by open, which
1669 * means we have to wait for ATR becoming
1670 * vaild = block until valid (or card
1673 if (filp->f_flags & O_NONBLOCK) {
1678 dev->mdelay = T_50MSEC;
1680 /* start monitoring the cardstatus */
1683 link->open = 1; /* only one open per device */
1685 DEBUGP(2, dev, "<- cmm_open\n");
1686 ret = nonseekable_open(inode, filp);
1692 static int cmm_close(struct inode *inode, struct file *filp)
1694 struct cm4000_dev *dev;
1695 struct pcmcia_device *link;
1696 int minor = iminor(inode);
1698 if (minor >= CM4000_MAX_DEV)
1701 link = dev_table[minor];
1707 DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1708 imajor(inode), minor);
1714 link->open = 0; /* only one open per device */
1715 wake_up(&dev->devq); /* socket removed? */
1717 DEBUGP(2, dev, "cmm_close\n");
1721 static void cmm_cm4000_release(struct pcmcia_device * link)
1723 struct cm4000_dev *dev = link->priv;
1725 /* dont terminate the monitor, rather rely on
1726 * close doing that for us.
1728 DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1729 while (link->open) {
1730 printk(KERN_INFO MODULE_NAME ": delaying release until "
1731 "process has terminated\n");
1732 /* note: don't interrupt us:
1733 * close the applications which own
1734 * the devices _first_ !
1736 wait_event(dev->devq, (link->open == 0));
1738 /* dev->devq=NULL; this cannot be zeroed earlier */
1739 DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1743 /*==== Interface to PCMCIA Layer =======================================*/
1745 static int cm4000_config_check(struct pcmcia_device *p_dev,
1746 cistpl_cftable_entry_t *cfg,
1747 cistpl_cftable_entry_t *dflt,
1754 p_dev->resource[0]->start = cfg->io.win[0].base;
1755 p_dev->resource[0]->end = cfg->io.win[0].len;
1756 p_dev->resource[0]->flags |= pcmcia_io_cfg_data_width(cfg->io.flags);
1757 p_dev->io_lines = cfg->io.flags & CISTPL_IO_LINES_MASK;
1759 return pcmcia_request_io(p_dev);
1762 static int cm4000_config(struct pcmcia_device * link, int devno)
1764 struct cm4000_dev *dev;
1766 /* read the config-tuples */
1767 if (pcmcia_loop_config(link, cm4000_config_check, NULL))
1770 link->conf.IntType = 00000002;
1772 if (pcmcia_request_configuration(link, &link->conf))
1780 cm4000_release(link);
1784 static int cm4000_suspend(struct pcmcia_device *link)
1786 struct cm4000_dev *dev;
1794 static int cm4000_resume(struct pcmcia_device *link)
1796 struct cm4000_dev *dev;
1805 static void cm4000_release(struct pcmcia_device *link)
1807 cmm_cm4000_release(link); /* delay release until device closed */
1808 pcmcia_disable_device(link);
1811 static int cm4000_probe(struct pcmcia_device *link)
1813 struct cm4000_dev *dev;
1816 for (i = 0; i < CM4000_MAX_DEV; i++)
1817 if (dev_table[i] == NULL)
1820 if (i == CM4000_MAX_DEV) {
1821 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1825 /* create a new cm4000_cs device */
1826 dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1832 link->conf.IntType = INT_MEMORY_AND_IO;
1833 dev_table[i] = link;
1835 init_waitqueue_head(&dev->devq);
1836 init_waitqueue_head(&dev->ioq);
1837 init_waitqueue_head(&dev->atrq);
1838 init_waitqueue_head(&dev->readq);
1840 ret = cm4000_config(link, i);
1842 dev_table[i] = NULL;
1847 device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
1852 static void cm4000_detach(struct pcmcia_device *link)
1854 struct cm4000_dev *dev = link->priv;
1858 for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1859 if (dev_table[devno] == link)
1861 if (devno == CM4000_MAX_DEV)
1866 cm4000_release(link);
1868 dev_table[devno] = NULL;
1871 device_destroy(cmm_class, MKDEV(major, devno));
1876 static const struct file_operations cm4000_fops = {
1877 .owner = THIS_MODULE,
1880 .unlocked_ioctl = cmm_ioctl,
1882 .release= cmm_close,
1885 static struct pcmcia_device_id cm4000_ids[] = {
1886 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1887 PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1890 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1892 static struct pcmcia_driver cm4000_driver = {
1893 .owner = THIS_MODULE,
1895 .name = "cm4000_cs",
1897 .probe = cm4000_probe,
1898 .remove = cm4000_detach,
1899 .suspend = cm4000_suspend,
1900 .resume = cm4000_resume,
1901 .id_table = cm4000_ids,
1904 static int __init cmm_init(void)
1908 printk(KERN_INFO "%s\n", version);
1910 cmm_class = class_create(THIS_MODULE, "cardman_4000");
1911 if (IS_ERR(cmm_class))
1912 return PTR_ERR(cmm_class);
1914 major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1916 printk(KERN_WARNING MODULE_NAME
1917 ": could not get major number\n");
1918 class_destroy(cmm_class);
1922 rc = pcmcia_register_driver(&cm4000_driver);
1924 unregister_chrdev(major, DEVICE_NAME);
1925 class_destroy(cmm_class);
1932 static void __exit cmm_exit(void)
1934 printk(KERN_INFO MODULE_NAME ": unloading\n");
1935 pcmcia_unregister_driver(&cm4000_driver);
1936 unregister_chrdev(major, DEVICE_NAME);
1937 class_destroy(cmm_class);
1940 module_init(cmm_init);
1941 module_exit(cmm_exit);
1942 MODULE_LICENSE("Dual BSD/GPL");