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/mutex.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 DEFINE_MUTEX(cmm_mutex
);
59 static char *version
= "cm4000_cs.c v2.4.0gm6 - All bugs added by Harald Welte";
62 #define T_10MSEC msecs_to_jiffies(10)
63 #define T_20MSEC msecs_to_jiffies(20)
64 #define T_40MSEC msecs_to_jiffies(40)
65 #define T_50MSEC msecs_to_jiffies(50)
66 #define T_100MSEC msecs_to_jiffies(100)
67 #define T_500MSEC msecs_to_jiffies(500)
69 static void cm4000_release(struct pcmcia_device
*link
);
71 static int major
; /* major number we get from the kernel */
73 /* note: the first state has to have number 0 always */
76 #define M_TIMEOUT_WAIT 1
77 #define M_READ_ATR_LEN 2
79 #define M_ATR_PRESENT 4
84 #define LOCK_MONITOR 1
86 #define IS_AUTOPPS_ACT 6
87 #define IS_PROCBYTE_PRESENT 7
91 #define IS_ATR_PRESENT 11
92 #define IS_ATR_VALID 12
93 #define IS_CMM_ABSENT 13
94 #define IS_BAD_LENGTH 14
95 #define IS_BAD_CSUM 15
96 #define IS_BAD_CARD 16
98 #define REG_FLAGS0(x) (x + 0)
99 #define REG_FLAGS1(x) (x + 1)
100 #define REG_NUM_BYTES(x) (x + 2)
101 #define REG_BUF_ADDR(x) (x + 3)
102 #define REG_BUF_DATA(x) (x + 4)
103 #define REG_NUM_SEND(x) (x + 5)
104 #define REG_BAUDRATE(x) (x + 6)
105 #define REG_STOPBITS(x) (x + 7)
108 struct pcmcia_device
*p_dev
;
110 unsigned char atr
[MAX_ATR
];
111 unsigned char rbuf
[512];
112 unsigned char sbuf
[512];
114 wait_queue_head_t devq
; /* when removing cardman must not be
117 wait_queue_head_t ioq
; /* if IO is locked, wait on this Q */
118 wait_queue_head_t atrq
; /* wait for ATR valid */
119 wait_queue_head_t readq
; /* used by write to wake blk.read */
121 /* warning: do not move this fields.
122 * initialising to zero depends on it - see ZERO_DEV below. */
123 unsigned char atr_csum
;
124 unsigned char atr_len_retry
;
125 unsigned short atr_len
;
126 unsigned short rlen
; /* bytes avail. after write */
127 unsigned short rpos
; /* latest read pos. write zeroes */
128 unsigned char procbyte
; /* T=0 procedure byte */
129 unsigned char mstate
; /* state of card monitor */
130 unsigned char cwarn
; /* slow down warning */
131 unsigned char flags0
; /* cardman IO-flags 0 */
132 unsigned char flags1
; /* cardman IO-flags 1 */
133 unsigned int mdelay
; /* variable monitor speeds, in jiffies */
135 unsigned int baudv
; /* baud value for speed */
137 unsigned char proto
; /* T=0, T=1, ... */
138 unsigned long flags
; /* lock+flags (MONITOR,IO,ATR) * for concurrent
141 unsigned char pts
[4];
143 struct timer_list timer
; /* used to keep monitor running */
147 #define ZERO_DEV(dev) \
148 memset(&dev->atr_csum,0, \
149 sizeof(struct cm4000_dev) - \
150 offsetof(struct cm4000_dev, atr_csum))
152 static struct pcmcia_device
*dev_table
[CM4000_MAX_DEV
];
153 static struct class *cmm_class
;
155 /* This table doesn't use spaces after the comma between fields and thus
156 * violates CodingStyle. However, I don't really think wrapping it around will
157 * make it any clearer to read -HW */
158 static unsigned char fi_di_table
[10][14] = {
159 /*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */
161 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
162 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
163 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
164 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
165 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
166 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
167 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
168 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
169 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
170 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
177 static inline void xoutb(unsigned char val
, unsigned short port
)
179 pr_debug("outb(val=%.2x,port=%.4x)\n", val
, port
);
182 static inline unsigned char xinb(unsigned short port
)
187 pr_debug("%.2x=inb(%.4x)\n", val
, port
);
193 static inline unsigned char invert_revert(unsigned char ch
)
198 static void str_invert_revert(unsigned char *b
, int len
)
202 for (i
= 0; i
< len
; i
++)
203 b
[i
] = invert_revert(b
[i
]);
206 #define ATRLENCK(dev,pos) \
207 if (pos>=dev->atr_len || pos>=MAX_ATR) \
210 static unsigned int calc_baudv(unsigned char fidi
)
212 unsigned int wcrcf
, wbrcf
, fi_rfu
, di_rfu
;
218 switch ((fidi
>> 4) & 0x0F) {
267 switch (fidi
& 0x0F) {
303 return (wcrcf
/ wbrcf
);
306 static unsigned short io_read_num_rec_bytes(unsigned int iobase
,
314 tmp
= inb(REG_NUM_BYTES(iobase
)) |
315 (inb(REG_FLAGS0(iobase
)) & 4 ? 0x100 : 0);
321 static int parse_atr(struct cm4000_dev
*dev
)
323 unsigned char any_t1
, any_t0
;
324 unsigned char ch
, ifno
;
327 DEBUGP(3, dev
, "-> parse_atr: dev->atr_len = %i\n", dev
->atr_len
);
329 if (dev
->atr_len
< 3) {
330 DEBUGP(5, dev
, "parse_atr: atr_len < 3\n");
334 if (dev
->atr
[0] == 0x3f)
335 set_bit(IS_INVREV
, &dev
->flags
);
337 clear_bit(IS_INVREV
, &dev
->flags
);
341 dev
->proto
= 0; /* XXX PROTO */
342 any_t1
= any_t0
= done
= 0;
343 dev
->ta1
= 0x11; /* defaults to 9600 baud */
345 if (ifno
== 1 && (ch
& 0x10)) {
346 /* read first interface byte and TA1 is present */
347 dev
->ta1
= dev
->atr
[2];
348 DEBUGP(5, dev
, "Card says FiDi is 0x%.2x\n", dev
->ta1
);
350 } else if ((ifno
== 2) && (ch
& 0x10)) { /* TA(2) */
355 DEBUGP(5, dev
, "Yi=%.2x\n", ch
& 0xf0);
356 ix
+= ((ch
& 0x10) >> 4) /* no of int.face chars */
359 + ((ch
& 0x80) >> 7);
360 /* ATRLENCK(dev,ix); */
361 if (ch
& 0x80) { /* TDi */
365 DEBUGP(5, dev
, "card is capable of T=1\n");
368 DEBUGP(5, dev
, "card is capable of T=0\n");
374 DEBUGP(5, dev
, "ix=%d noHist=%d any_t1=%d\n",
375 ix
, dev
->atr
[1] & 15, any_t1
);
376 if (ix
+ 1 + (dev
->atr
[1] & 0x0f) + any_t1
!= dev
->atr_len
) {
377 DEBUGP(5, dev
, "length error\n");
381 set_bit(IS_ANY_T0
, &dev
->flags
);
383 if (any_t1
) { /* compute csum */
386 for (i
= 1; i
< dev
->atr_len
; i
++)
387 dev
->atr_csum
^= dev
->atr
[i
];
389 set_bit(IS_BAD_CSUM
, &dev
->flags
);
390 DEBUGP(5, dev
, "bad checksum\n");
395 dev
->proto
= 1; /* XXX PROTO */
396 set_bit(IS_ANY_T1
, &dev
->flags
);
408 static struct card_fixup card_fixups
[] = {
410 .atr
= { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
415 .atr
= {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
422 static void set_cardparameter(struct cm4000_dev
*dev
)
425 unsigned int iobase
= dev
->p_dev
->resource
[0]->start
;
426 u_int8_t stopbits
= 0x02; /* ISO default */
428 DEBUGP(3, dev
, "-> set_cardparameter\n");
430 dev
->flags1
= dev
->flags1
| (((dev
->baudv
- 1) & 0x0100) >> 8);
431 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
432 DEBUGP(5, dev
, "flags1 = 0x%02x\n", dev
->flags1
);
435 xoutb((unsigned char)((dev
->baudv
- 1) & 0xFF), REG_BAUDRATE(iobase
));
437 DEBUGP(5, dev
, "baudv = %i -> write 0x%02x\n", dev
->baudv
,
438 ((dev
->baudv
- 1) & 0xFF));
441 for (i
= 0; i
< ARRAY_SIZE(card_fixups
); i
++) {
442 if (!memcmp(dev
->atr
, card_fixups
[i
].atr
,
443 card_fixups
[i
].atr_len
))
444 stopbits
= card_fixups
[i
].stopbits
;
446 xoutb(stopbits
, REG_STOPBITS(iobase
));
448 DEBUGP(3, dev
, "<- set_cardparameter\n");
451 static int set_protocol(struct cm4000_dev
*dev
, struct ptsreq
*ptsreq
)
454 unsigned long tmp
, i
;
455 unsigned short num_bytes_read
;
456 unsigned char pts_reply
[4];
458 unsigned int iobase
= dev
->p_dev
->resource
[0]->start
;
462 DEBUGP(3, dev
, "-> set_protocol\n");
463 DEBUGP(5, dev
, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
464 "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
465 "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq
->protocol
,
466 (unsigned int)ptsreq
->flags
, ptsreq
->pts1
, ptsreq
->pts2
,
469 /* Fill PTS structure */
472 tmp
= ptsreq
->protocol
;
473 while ((tmp
= (tmp
>> 1)) > 0)
475 dev
->proto
= dev
->pts
[1]; /* Set new protocol */
476 dev
->pts
[1] = (0x01 << 4) | (dev
->pts
[1]);
478 /* Correct Fi/Di according to CM4000 Fi/Di table */
479 DEBUGP(5, dev
, "Ta(1) from ATR is 0x%.2x\n", dev
->ta1
);
480 /* set Fi/Di according to ATR TA(1) */
481 dev
->pts
[2] = fi_di_table
[dev
->ta1
& 0x0F][(dev
->ta1
>> 4) & 0x0F];
483 /* Calculate PCK character */
484 dev
->pts
[3] = dev
->pts
[0] ^ dev
->pts
[1] ^ dev
->pts
[2];
486 DEBUGP(5, dev
, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
487 dev
->pts
[0], dev
->pts
[1], dev
->pts
[2], dev
->pts
[3]);
489 /* check card convention */
490 if (test_bit(IS_INVREV
, &dev
->flags
))
491 str_invert_revert(dev
->pts
, 4);
494 xoutb(0x80, REG_FLAGS0(iobase
));
496 /* Enable access to the message buffer */
497 DEBUGP(5, dev
, "Enable access to the messages buffer\n");
498 dev
->flags1
= 0x20 /* T_Active */
499 | (test_bit(IS_INVREV
, &dev
->flags
) ? 0x02 : 0x00) /* inv parity */
500 | ((dev
->baudv
>> 8) & 0x01); /* MSB-baud */
501 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
503 DEBUGP(5, dev
, "Enable message buffer -> flags1 = 0x%.2x\n",
506 /* write challenge to the buffer */
507 DEBUGP(5, dev
, "Write challenge to buffer: ");
508 for (i
= 0; i
< 4; i
++) {
509 xoutb(i
, REG_BUF_ADDR(iobase
));
510 xoutb(dev
->pts
[i
], REG_BUF_DATA(iobase
)); /* buf data */
512 pr_debug("0x%.2x ", dev
->pts
[i
]);
519 /* set number of bytes to write */
520 DEBUGP(5, dev
, "Set number of bytes to write\n");
521 xoutb(0x04, REG_NUM_SEND(iobase
));
523 /* Trigger CARDMAN CONTROLLER */
524 xoutb(0x50, REG_FLAGS0(iobase
));
526 /* Monitor progress */
527 /* wait for xmit done */
528 DEBUGP(5, dev
, "Waiting for NumRecBytes getting valid\n");
530 for (i
= 0; i
< 100; i
++) {
531 if (inb(REG_FLAGS0(iobase
)) & 0x08) {
532 DEBUGP(5, dev
, "NumRecBytes is valid\n");
538 DEBUGP(5, dev
, "Timeout waiting for NumRecBytes getting "
541 goto exit_setprotocol
;
544 DEBUGP(5, dev
, "Reading NumRecBytes\n");
545 for (i
= 0; i
< 100; i
++) {
546 io_read_num_rec_bytes(iobase
, &num_bytes_read
);
547 if (num_bytes_read
>= 4) {
548 DEBUGP(2, dev
, "NumRecBytes = %i\n", num_bytes_read
);
554 /* check whether it is a short PTS reply? */
555 if (num_bytes_read
== 3)
559 DEBUGP(5, dev
, "Timeout reading num_bytes_read\n");
561 goto exit_setprotocol
;
564 DEBUGP(5, dev
, "Reset the CARDMAN CONTROLLER\n");
565 xoutb(0x80, REG_FLAGS0(iobase
));
568 DEBUGP(5, dev
, "Read PPS reply\n");
569 for (i
= 0; i
< num_bytes_read
; i
++) {
570 xoutb(i
, REG_BUF_ADDR(iobase
));
571 pts_reply
[i
] = inb(REG_BUF_DATA(iobase
));
575 DEBUGP(2, dev
, "PTSreply: ");
576 for (i
= 0; i
< num_bytes_read
; i
++) {
577 pr_debug("0x%.2x ", pts_reply
[i
]);
580 #endif /* CM4000_DEBUG */
582 DEBUGP(5, dev
, "Clear Tactive in Flags1\n");
583 xoutb(0x20, REG_FLAGS1(iobase
));
585 /* Compare ptsreq and ptsreply */
586 if ((dev
->pts
[0] == pts_reply
[0]) &&
587 (dev
->pts
[1] == pts_reply
[1]) &&
588 (dev
->pts
[2] == pts_reply
[2]) && (dev
->pts
[3] == pts_reply
[3])) {
589 /* setcardparameter according to PPS */
590 dev
->baudv
= calc_baudv(dev
->pts
[2]);
591 set_cardparameter(dev
);
592 } else if ((dev
->pts
[0] == pts_reply
[0]) &&
593 ((dev
->pts
[1] & 0xef) == pts_reply
[1]) &&
594 ((pts_reply
[0] ^ pts_reply
[1]) == pts_reply
[2])) {
595 /* short PTS reply, set card parameter to default values */
596 dev
->baudv
= calc_baudv(0x11);
597 set_cardparameter(dev
);
602 DEBUGP(3, dev
, "<- set_protocol\n");
606 static int io_detect_cm4000(unsigned int iobase
, struct cm4000_dev
*dev
)
609 /* note: statemachine is assumed to be reset */
610 if (inb(REG_FLAGS0(iobase
)) & 8) {
611 clear_bit(IS_ATR_VALID
, &dev
->flags
);
612 set_bit(IS_CMM_ABSENT
, &dev
->flags
);
613 return 0; /* detect CMM = 1 -> failure */
615 /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
616 xoutb(dev
->flags1
| 0x40, REG_FLAGS1(iobase
));
617 if ((inb(REG_FLAGS0(iobase
)) & 8) == 0) {
618 clear_bit(IS_ATR_VALID
, &dev
->flags
);
619 set_bit(IS_CMM_ABSENT
, &dev
->flags
);
620 return 0; /* detect CMM=0 -> failure */
622 /* clear detectCMM again by restoring original flags1 */
623 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
627 static void terminate_monitor(struct cm4000_dev
*dev
)
630 /* tell the monitor to stop and wait until
633 DEBUGP(3, dev
, "-> terminate_monitor\n");
634 wait_event_interruptible(dev
->devq
,
635 test_and_set_bit(LOCK_MONITOR
,
636 (void *)&dev
->flags
));
638 /* now, LOCK_MONITOR has been set.
639 * allow a last cycle in the monitor.
640 * the monitor will indicate that it has
641 * finished by clearing this bit.
643 DEBUGP(5, dev
, "Now allow last cycle of monitor!\n");
644 while (test_bit(LOCK_MONITOR
, (void *)&dev
->flags
))
647 DEBUGP(5, dev
, "Delete timer\n");
648 del_timer_sync(&dev
->timer
);
650 dev
->monitor_running
= 0;
653 DEBUGP(3, dev
, "<- terminate_monitor\n");
657 * monitor the card every 50msec. as a side-effect, retrieve the
658 * atr once a card is inserted. another side-effect of retrieving the
659 * atr is that the card will be powered on, so there is no need to
660 * power on the card explictely from the application: the driver
661 * is already doing that for you.
664 static void monitor_card(unsigned long p
)
666 struct cm4000_dev
*dev
= (struct cm4000_dev
*) p
;
667 unsigned int iobase
= dev
->p_dev
->resource
[0]->start
;
669 struct ptsreq ptsreq
;
672 DEBUGP(7, dev
, "-> monitor_card\n");
674 /* if someone has set the lock for us: we're done! */
675 if (test_and_set_bit(LOCK_MONITOR
, &dev
->flags
)) {
676 DEBUGP(4, dev
, "About to stop monitor\n");
680 dev
->atr_csum
= dev
->atr_len_retry
= dev
->cwarn
= 0;
681 dev
->mstate
= M_FETCH_ATR
;
682 clear_bit(LOCK_MONITOR
, &dev
->flags
);
683 /* close et al. are sleeping on devq, so wake it */
684 wake_up_interruptible(&dev
->devq
);
685 DEBUGP(2, dev
, "<- monitor_card (we are done now)\n");
689 /* try to lock io: if it is already locked, just add another timer */
690 if (test_and_set_bit(LOCK_IO
, (void *)&dev
->flags
)) {
691 DEBUGP(4, dev
, "Couldn't get IO lock\n");
692 goto return_with_timer
;
695 /* is a card/a reader inserted at all ? */
696 dev
->flags0
= xinb(REG_FLAGS0(iobase
));
697 DEBUGP(7, dev
, "dev->flags0 = 0x%2x\n", dev
->flags0
);
698 DEBUGP(7, dev
, "smartcard present: %s\n",
699 dev
->flags0
& 1 ? "yes" : "no");
700 DEBUGP(7, dev
, "cardman present: %s\n",
701 dev
->flags0
== 0xff ? "no" : "yes");
703 if ((dev
->flags0
& 1) == 0 /* no smartcard inserted */
704 || dev
->flags0
== 0xff) { /* no cardman inserted */
708 dev
->atr_csum
= dev
->atr_len_retry
= dev
->cwarn
= 0;
709 dev
->mstate
= M_FETCH_ATR
;
711 dev
->flags
&= 0x000000ff; /* only keep IO and MONITOR locks */
713 if (dev
->flags0
== 0xff) {
714 DEBUGP(4, dev
, "set IS_CMM_ABSENT bit\n");
715 set_bit(IS_CMM_ABSENT
, &dev
->flags
);
716 } else if (test_bit(IS_CMM_ABSENT
, &dev
->flags
)) {
717 DEBUGP(4, dev
, "clear IS_CMM_ABSENT bit "
718 "(card is removed)\n");
719 clear_bit(IS_CMM_ABSENT
, &dev
->flags
);
723 } else if ((dev
->flags0
& 1) && test_bit(IS_CMM_ABSENT
, &dev
->flags
)) {
724 /* cardman and card present but cardman was absent before
725 * (after suspend with inserted card) */
726 DEBUGP(4, dev
, "clear IS_CMM_ABSENT bit (card is inserted)\n");
727 clear_bit(IS_CMM_ABSENT
, &dev
->flags
);
730 if (test_bit(IS_ATR_VALID
, &dev
->flags
) == 1) {
731 DEBUGP(7, dev
, "believe ATR is already valid (do nothing)\n");
735 switch (dev
->mstate
) {
736 unsigned char flags0
;
738 DEBUGP(4, dev
, "M_CARDOFF\n");
739 flags0
= inb(REG_FLAGS0(iobase
));
741 /* wait until Flags0 indicate power is off */
742 dev
->mdelay
= T_10MSEC
;
744 /* Flags0 indicate power off and no card inserted now;
745 * Reset CARDMAN CONTROLLER */
746 xoutb(0x80, REG_FLAGS0(iobase
));
748 /* prepare for fetching ATR again: after card off ATR
749 * is read again automatically */
753 dev
->atr_len_retry
= dev
->cwarn
= 0;
754 dev
->mstate
= M_FETCH_ATR
;
756 /* minimal gap between CARDOFF and read ATR is 50msec */
757 dev
->mdelay
= T_50MSEC
;
761 DEBUGP(4, dev
, "M_FETCH_ATR\n");
762 xoutb(0x80, REG_FLAGS0(iobase
));
763 DEBUGP(4, dev
, "Reset BAUDV to 9600\n");
764 dev
->baudv
= 0x173; /* 9600 */
765 xoutb(0x02, REG_STOPBITS(iobase
)); /* stopbits=2 */
766 xoutb(0x73, REG_BAUDRATE(iobase
)); /* baud value */
767 xoutb(0x21, REG_FLAGS1(iobase
)); /* T_Active=1, baud
769 /* warm start vs. power on: */
770 xoutb(dev
->flags0
& 2 ? 0x46 : 0x44, REG_FLAGS0(iobase
));
771 dev
->mdelay
= T_40MSEC
;
772 dev
->mstate
= M_TIMEOUT_WAIT
;
775 DEBUGP(4, dev
, "M_TIMEOUT_WAIT\n");
777 io_read_num_rec_bytes(iobase
, &dev
->atr_len
);
778 dev
->mdelay
= T_10MSEC
;
779 dev
->mstate
= M_READ_ATR_LEN
;
782 DEBUGP(4, dev
, "M_READ_ATR_LEN\n");
783 /* infinite loop possible, since there is no timeout */
785 #define MAX_ATR_LEN_RETRY 100
787 if (dev
->atr_len
== io_read_num_rec_bytes(iobase
, &s
)) {
788 if (dev
->atr_len_retry
++ >= MAX_ATR_LEN_RETRY
) { /* + XX msec */
789 dev
->mdelay
= T_10MSEC
;
790 dev
->mstate
= M_READ_ATR
;
794 dev
->atr_len_retry
= 0; /* set new timeout */
797 DEBUGP(4, dev
, "Current ATR_LEN = %i\n", dev
->atr_len
);
800 DEBUGP(4, dev
, "M_READ_ATR\n");
801 xoutb(0x80, REG_FLAGS0(iobase
)); /* reset SM */
802 for (i
= 0; i
< dev
->atr_len
; i
++) {
803 xoutb(i
, REG_BUF_ADDR(iobase
));
804 dev
->atr
[i
] = inb(REG_BUF_DATA(iobase
));
806 /* Deactivate T_Active flags */
807 DEBUGP(4, dev
, "Deactivate T_Active flags\n");
809 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
811 /* atr is present (which doesnt mean it's valid) */
812 set_bit(IS_ATR_PRESENT
, &dev
->flags
);
813 if (dev
->atr
[0] == 0x03)
814 str_invert_revert(dev
->atr
, dev
->atr_len
);
815 atrc
= parse_atr(dev
);
816 if (atrc
== 0) { /* atr invalid */
818 dev
->mstate
= M_BAD_CARD
;
820 dev
->mdelay
= T_50MSEC
;
821 dev
->mstate
= M_ATR_PRESENT
;
822 set_bit(IS_ATR_VALID
, &dev
->flags
);
825 if (test_bit(IS_ATR_VALID
, &dev
->flags
) == 1) {
826 DEBUGP(4, dev
, "monitor_card: ATR valid\n");
827 /* if ta1 == 0x11, no PPS necessary (default values) */
828 /* do not do PPS with multi protocol cards */
829 if ((test_bit(IS_AUTOPPS_ACT
, &dev
->flags
) == 0) &&
830 (dev
->ta1
!= 0x11) &&
831 !(test_bit(IS_ANY_T0
, &dev
->flags
) &&
832 test_bit(IS_ANY_T1
, &dev
->flags
))) {
833 DEBUGP(4, dev
, "Perform AUTOPPS\n");
834 set_bit(IS_AUTOPPS_ACT
, &dev
->flags
);
835 ptsreq
.protocol
= ptsreq
.protocol
=
836 (0x01 << dev
->proto
);
841 if (set_protocol(dev
, &ptsreq
) == 0) {
842 DEBUGP(4, dev
, "AUTOPPS ret SUCC\n");
843 clear_bit(IS_AUTOPPS_ACT
, &dev
->flags
);
844 wake_up_interruptible(&dev
->atrq
);
846 DEBUGP(4, dev
, "AUTOPPS failed: "
847 "repower using defaults\n");
848 /* prepare for repowering */
849 clear_bit(IS_ATR_PRESENT
, &dev
->flags
);
850 clear_bit(IS_ATR_VALID
, &dev
->flags
);
854 dev
->atr_len_retry
= dev
->cwarn
= 0;
855 dev
->mstate
= M_FETCH_ATR
;
857 dev
->mdelay
= T_50MSEC
;
860 /* for cards which use slightly different
861 * params (extra guard time) */
862 set_cardparameter(dev
);
863 if (test_bit(IS_AUTOPPS_ACT
, &dev
->flags
) == 1)
864 DEBUGP(4, dev
, "AUTOPPS already active "
865 "2nd try:use default values\n");
866 if (dev
->ta1
== 0x11)
867 DEBUGP(4, dev
, "No AUTOPPS necessary "
869 if (test_bit(IS_ANY_T0
, &dev
->flags
)
870 && test_bit(IS_ANY_T1
, &dev
->flags
))
871 DEBUGP(4, dev
, "Do NOT perform AUTOPPS "
872 "with multiprotocol cards\n");
873 clear_bit(IS_AUTOPPS_ACT
, &dev
->flags
);
874 wake_up_interruptible(&dev
->atrq
);
877 DEBUGP(4, dev
, "ATR invalid\n");
878 wake_up_interruptible(&dev
->atrq
);
882 DEBUGP(4, dev
, "M_BAD_CARD\n");
883 /* slow down warning, but prompt immediately after insertion */
884 if (dev
->cwarn
== 0 || dev
->cwarn
== 10) {
885 set_bit(IS_BAD_CARD
, &dev
->flags
);
886 dev_warn(&dev
->p_dev
->dev
, MODULE_NAME
": ");
887 if (test_bit(IS_BAD_CSUM
, &dev
->flags
)) {
888 DEBUGP(4, dev
, "ATR checksum (0x%.2x, should "
889 "be zero) failed\n", dev
->atr_csum
);
892 else if (test_bit(IS_BAD_LENGTH
, &dev
->flags
)) {
893 DEBUGP(4, dev
, "ATR length error\n");
895 DEBUGP(4, dev
, "card damaged or wrong way "
900 wake_up_interruptible(&dev
->atrq
); /* wake open */
903 dev
->mdelay
= T_100MSEC
;
904 dev
->mstate
= M_FETCH_ATR
;
907 DEBUGP(7, dev
, "Unknown action\n");
912 DEBUGP(7, dev
, "release_io\n");
913 clear_bit(LOCK_IO
, &dev
->flags
);
914 wake_up_interruptible(&dev
->ioq
); /* whoever needs IO */
917 DEBUGP(7, dev
, "<- monitor_card (returns with timer)\n");
918 mod_timer(&dev
->timer
, jiffies
+ dev
->mdelay
);
919 clear_bit(LOCK_MONITOR
, &dev
->flags
);
922 /* Interface to userland (file_operations) */
924 static ssize_t
cmm_read(struct file
*filp
, __user
char *buf
, size_t count
,
927 struct cm4000_dev
*dev
= filp
->private_data
;
928 unsigned int iobase
= dev
->p_dev
->resource
[0]->start
;
932 DEBUGP(2, dev
, "-> cmm_read(%s,%d)\n", current
->comm
, current
->pid
);
934 if (count
== 0) /* according to manpage */
937 if (!pcmcia_dev_present(dev
->p_dev
) || /* device removed */
938 test_bit(IS_CMM_ABSENT
, &dev
->flags
))
941 if (test_bit(IS_BAD_CSUM
, &dev
->flags
))
944 /* also see the note about this in cmm_write */
945 if (wait_event_interruptible
947 ((filp
->f_flags
& O_NONBLOCK
)
948 || (test_bit(IS_ATR_PRESENT
, (void *)&dev
->flags
) != 0)))) {
949 if (filp
->f_flags
& O_NONBLOCK
)
954 if (test_bit(IS_ATR_VALID
, &dev
->flags
) == 0)
957 /* this one implements blocking IO */
958 if (wait_event_interruptible
960 ((filp
->f_flags
& O_NONBLOCK
) || (dev
->rpos
< dev
->rlen
)))) {
961 if (filp
->f_flags
& O_NONBLOCK
)
967 if (wait_event_interruptible
969 ((filp
->f_flags
& O_NONBLOCK
)
970 || (test_and_set_bit(LOCK_IO
, (void *)&dev
->flags
) == 0)))) {
971 if (filp
->f_flags
& O_NONBLOCK
)
977 dev
->flags0
= inb(REG_FLAGS0(iobase
));
978 if ((dev
->flags0
& 1) == 0 /* no smartcard inserted */
979 || dev
->flags0
== 0xff) { /* no cardman inserted */
980 clear_bit(IS_ATR_VALID
, &dev
->flags
);
981 if (dev
->flags0
& 1) {
982 set_bit(IS_CMM_ABSENT
, &dev
->flags
);
989 DEBUGP(4, dev
, "begin read answer\n");
990 j
= min(count
, (size_t)(dev
->rlen
- dev
->rpos
));
994 DEBUGP(4, dev
, "read1 j=%d\n", j
);
995 for (i
= 0; i
< j
; i
++) {
996 xoutb(k
++, REG_BUF_ADDR(iobase
));
997 dev
->rbuf
[i
] = xinb(REG_BUF_DATA(iobase
));
999 j
= min(count
, (size_t)(dev
->rlen
- dev
->rpos
));
1001 DEBUGP(4, dev
, "read2 j=%d\n", j
);
1002 dev
->flags1
|= 0x10; /* MSB buf addr set */
1003 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
1004 for (; i
< j
; i
++) {
1005 xoutb(k
++, REG_BUF_ADDR(iobase
));
1006 dev
->rbuf
[i
] = xinb(REG_BUF_DATA(iobase
));
1010 if (dev
->proto
== 0 && count
> dev
->rlen
- dev
->rpos
&& i
) {
1011 DEBUGP(4, dev
, "T=0 and count > buffer\n");
1012 dev
->rbuf
[i
] = dev
->rbuf
[i
- 1];
1013 dev
->rbuf
[i
- 1] = dev
->procbyte
;
1018 dev
->rpos
= dev
->rlen
+ 1;
1020 /* Clear T1Active */
1021 DEBUGP(4, dev
, "Clear T1Active\n");
1022 dev
->flags1
&= 0xdf;
1023 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
1025 xoutb(0, REG_FLAGS1(iobase
)); /* clear detectCMM */
1026 /* last check before exit */
1027 if (!io_detect_cm4000(iobase
, dev
)) {
1032 if (test_bit(IS_INVREV
, &dev
->flags
) && count
> 0)
1033 str_invert_revert(dev
->rbuf
, count
);
1035 if (copy_to_user(buf
, dev
->rbuf
, count
))
1039 clear_bit(LOCK_IO
, &dev
->flags
);
1040 wake_up_interruptible(&dev
->ioq
);
1042 DEBUGP(2, dev
, "<- cmm_read returns: rc = %Zi\n",
1043 (rc
< 0 ? rc
: count
));
1044 return rc
< 0 ? rc
: count
;
1047 static ssize_t
cmm_write(struct file
*filp
, const char __user
*buf
,
1048 size_t count
, loff_t
*ppos
)
1050 struct cm4000_dev
*dev
= filp
->private_data
;
1051 unsigned int iobase
= dev
->p_dev
->resource
[0]->start
;
1054 unsigned char infolen
;
1055 unsigned char sendT0
;
1056 unsigned short nsend
;
1061 DEBUGP(2, dev
, "-> cmm_write(%s,%d)\n", current
->comm
, current
->pid
);
1063 if (count
== 0) /* according to manpage */
1066 if (dev
->proto
== 0 && count
< 4) {
1067 /* T0 must have at least 4 bytes */
1068 DEBUGP(4, dev
, "T0 short write\n");
1072 nr
= count
& 0x1ff; /* max bytes to write */
1074 sendT0
= dev
->proto
? 0 : nr
> 5 ? 0x08 : 0;
1076 if (!pcmcia_dev_present(dev
->p_dev
) || /* device removed */
1077 test_bit(IS_CMM_ABSENT
, &dev
->flags
))
1080 if (test_bit(IS_BAD_CSUM
, &dev
->flags
)) {
1081 DEBUGP(4, dev
, "bad csum\n");
1086 * wait for atr to become valid.
1087 * note: it is important to lock this code. if we dont, the monitor
1088 * could be run between test_bit and the call to sleep on the
1089 * atr-queue. if *then* the monitor detects atr valid, it will wake up
1090 * any process on the atr-queue, *but* since we have been interrupted,
1091 * we do not yet sleep on this queue. this would result in a missed
1092 * wake_up and the calling process would sleep forever (until
1093 * interrupted). also, do *not* restore_flags before sleep_on, because
1094 * this could result in the same situation!
1096 if (wait_event_interruptible
1098 ((filp
->f_flags
& O_NONBLOCK
)
1099 || (test_bit(IS_ATR_PRESENT
, (void *)&dev
->flags
) != 0)))) {
1100 if (filp
->f_flags
& O_NONBLOCK
)
1102 return -ERESTARTSYS
;
1105 if (test_bit(IS_ATR_VALID
, &dev
->flags
) == 0) { /* invalid atr */
1106 DEBUGP(4, dev
, "invalid ATR\n");
1111 if (wait_event_interruptible
1113 ((filp
->f_flags
& O_NONBLOCK
)
1114 || (test_and_set_bit(LOCK_IO
, (void *)&dev
->flags
) == 0)))) {
1115 if (filp
->f_flags
& O_NONBLOCK
)
1117 return -ERESTARTSYS
;
1120 if (copy_from_user(dev
->sbuf
, buf
, ((count
> 512) ? 512 : count
)))
1124 dev
->flags0
= inb(REG_FLAGS0(iobase
));
1125 if ((dev
->flags0
& 1) == 0 /* no smartcard inserted */
1126 || dev
->flags0
== 0xff) { /* no cardman inserted */
1127 clear_bit(IS_ATR_VALID
, &dev
->flags
);
1128 if (dev
->flags0
& 1) {
1129 set_bit(IS_CMM_ABSENT
, &dev
->flags
);
1132 DEBUGP(4, dev
, "IO error\n");
1138 xoutb(0x80, REG_FLAGS0(iobase
)); /* reset SM */
1140 if (!io_detect_cm4000(iobase
, dev
)) {
1145 /* reflect T=0 send/read mode in flags1 */
1146 dev
->flags1
|= (sendT0
);
1148 set_cardparameter(dev
);
1150 /* dummy read, reset flag procedure received */
1151 tmp
= inb(REG_FLAGS1(iobase
));
1153 dev
->flags1
= 0x20 /* T_Active */
1155 | (test_bit(IS_INVREV
, &dev
->flags
) ? 2 : 0)/* inverse parity */
1156 | (((dev
->baudv
- 1) & 0x0100) >> 8); /* MSB-Baud */
1157 DEBUGP(1, dev
, "set dev->flags1 = 0x%.2x\n", dev
->flags1
);
1158 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
1161 DEBUGP(4, dev
, "Xmit data\n");
1162 for (i
= 0; i
< nr
; i
++) {
1164 dev
->flags1
= 0x20 /* T_Active */
1165 | (sendT0
) /* SendT0 */
1166 /* inverse parity: */
1167 | (test_bit(IS_INVREV
, &dev
->flags
) ? 2 : 0)
1168 | (((dev
->baudv
- 1) & 0x0100) >> 8) /* MSB-Baud */
1169 | 0x10; /* set address high */
1170 DEBUGP(4, dev
, "dev->flags = 0x%.2x - set address "
1171 "high\n", dev
->flags1
);
1172 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
1174 if (test_bit(IS_INVREV
, &dev
->flags
)) {
1175 DEBUGP(4, dev
, "Apply inverse convention for 0x%.2x "
1176 "-> 0x%.2x\n", (unsigned char)dev
->sbuf
[i
],
1177 invert_revert(dev
->sbuf
[i
]));
1178 xoutb(i
, REG_BUF_ADDR(iobase
));
1179 xoutb(invert_revert(dev
->sbuf
[i
]),
1180 REG_BUF_DATA(iobase
));
1182 xoutb(i
, REG_BUF_ADDR(iobase
));
1183 xoutb(dev
->sbuf
[i
], REG_BUF_DATA(iobase
));
1186 DEBUGP(4, dev
, "Xmit done\n");
1188 if (dev
->proto
== 0) {
1189 /* T=0 proto: 0 byte reply */
1191 DEBUGP(4, dev
, "T=0 assumes 0 byte reply\n");
1192 xoutb(i
, REG_BUF_ADDR(iobase
));
1193 if (test_bit(IS_INVREV
, &dev
->flags
))
1194 xoutb(0xff, REG_BUF_DATA(iobase
));
1196 xoutb(0x00, REG_BUF_DATA(iobase
));
1206 nsend
= 5 + (unsigned char)dev
->sbuf
[4];
1207 if (dev
->sbuf
[4] == 0)
1214 /* T0: output procedure byte */
1215 if (test_bit(IS_INVREV
, &dev
->flags
)) {
1216 DEBUGP(4, dev
, "T=0 set Procedure byte (inverse-reverse) "
1217 "0x%.2x\n", invert_revert(dev
->sbuf
[1]));
1218 xoutb(invert_revert(dev
->sbuf
[1]), REG_NUM_BYTES(iobase
));
1220 DEBUGP(4, dev
, "T=0 set Procedure byte 0x%.2x\n", dev
->sbuf
[1]);
1221 xoutb(dev
->sbuf
[1], REG_NUM_BYTES(iobase
));
1224 DEBUGP(1, dev
, "set NumSendBytes = 0x%.2x\n",
1225 (unsigned char)(nsend
& 0xff));
1226 xoutb((unsigned char)(nsend
& 0xff), REG_NUM_SEND(iobase
));
1228 DEBUGP(1, dev
, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1229 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 xoutb(0x40 /* SM_Active */
1234 | (dev
->flags0
& 2 ? 0 : 4) /* power on if needed */
1235 |(dev
->proto
? 0x10 : 0x08) /* T=1/T=0 */
1236 |(nsend
& 0x100) >> 8, /* MSB numSendBytes */
1237 REG_FLAGS0(iobase
));
1239 /* wait for xmit done */
1240 if (dev
->proto
== 1) {
1241 DEBUGP(4, dev
, "Wait for xmit done\n");
1242 for (i
= 0; i
< 1000; i
++) {
1243 if (inb(REG_FLAGS0(iobase
)) & 0x08)
1245 msleep_interruptible(10);
1248 DEBUGP(4, dev
, "timeout waiting for xmit done\n");
1254 /* T=1: wait for infoLen */
1258 /* wait until infoLen is valid */
1259 for (i
= 0; i
< 6000; i
++) { /* max waiting time of 1 min */
1260 io_read_num_rec_bytes(iobase
, &s
);
1262 infolen
= inb(REG_FLAGS1(iobase
));
1263 DEBUGP(4, dev
, "infolen=%d\n", infolen
);
1266 msleep_interruptible(10);
1269 DEBUGP(4, dev
, "timeout waiting for infoLen\n");
1274 clear_bit(IS_PROCBYTE_PRESENT
, &dev
->flags
);
1276 /* numRecBytes | bit9 of numRecytes */
1277 io_read_num_rec_bytes(iobase
, &dev
->rlen
);
1278 for (i
= 0; i
< 600; i
++) { /* max waiting time of 2 sec */
1280 if (dev
->rlen
>= infolen
+ 4)
1283 msleep_interruptible(10);
1284 /* numRecBytes | bit9 of numRecytes */
1285 io_read_num_rec_bytes(iobase
, &s
);
1286 if (s
> dev
->rlen
) {
1287 DEBUGP(1, dev
, "NumRecBytes inc (reset timeout)\n");
1288 i
= 0; /* reset timeout */
1291 /* T=0: we are done when numRecBytes doesn't
1292 * increment any more and NoProcedureByte
1293 * is set and numRecBytes == bytes sent + 6
1294 * (header bytes + data + 1 for sw2)
1295 * except when the card replies an error
1296 * which means, no data will be sent back.
1298 else if (dev
->proto
== 0) {
1299 if ((inb(REG_BUF_ADDR(iobase
)) & 0x80)) {
1300 /* no procedure byte received since last read */
1301 DEBUGP(1, dev
, "NoProcedure byte set\n");
1304 /* procedure byte received since last read */
1305 DEBUGP(1, dev
, "NoProcedure byte unset "
1306 "(reset timeout)\n");
1307 dev
->procbyte
= inb(REG_FLAGS1(iobase
));
1308 DEBUGP(1, dev
, "Read procedure byte 0x%.2x\n",
1310 i
= 0; /* resettimeout */
1312 if (inb(REG_FLAGS0(iobase
)) & 0x08) {
1313 DEBUGP(1, dev
, "T0Done flag (read reply)\n");
1318 infolen
= inb(REG_FLAGS1(iobase
));
1321 DEBUGP(1, dev
, "timeout waiting for numRecBytes\n");
1325 if (dev
->proto
== 0) {
1326 DEBUGP(1, dev
, "Wait for T0Done bit to be set\n");
1327 for (i
= 0; i
< 1000; i
++) {
1328 if (inb(REG_FLAGS0(iobase
)) & 0x08)
1330 msleep_interruptible(10);
1333 DEBUGP(1, dev
, "timeout waiting for T0Done\n");
1338 dev
->procbyte
= inb(REG_FLAGS1(iobase
));
1339 DEBUGP(4, dev
, "Read procedure byte 0x%.2x\n",
1342 io_read_num_rec_bytes(iobase
, &dev
->rlen
);
1343 DEBUGP(4, dev
, "Read NumRecBytes = %i\n", dev
->rlen
);
1347 /* T=1: read offset=zero, T=0: read offset=after challenge */
1348 dev
->rpos
= dev
->proto
? 0 : nr
== 4 ? 5 : nr
> dev
->rlen
? 5 : nr
;
1349 DEBUGP(4, dev
, "dev->rlen = %i, dev->rpos = %i, nr = %i\n",
1350 dev
->rlen
, dev
->rpos
, nr
);
1353 DEBUGP(4, dev
, "Reset SM\n");
1354 xoutb(0x80, REG_FLAGS0(iobase
)); /* reset SM */
1357 DEBUGP(4, dev
, "Write failed but clear T_Active\n");
1358 dev
->flags1
&= 0xdf;
1359 xoutb(dev
->flags1
, REG_FLAGS1(iobase
));
1362 clear_bit(LOCK_IO
, &dev
->flags
);
1363 wake_up_interruptible(&dev
->ioq
);
1364 wake_up_interruptible(&dev
->readq
); /* tell read we have data */
1366 /* ITSEC E2: clear write buffer */
1367 memset((char *)dev
->sbuf
, 0, 512);
1369 /* return error or actually written bytes */
1370 DEBUGP(2, dev
, "<- cmm_write\n");
1371 return rc
< 0 ? rc
: nr
;
1374 static void start_monitor(struct cm4000_dev
*dev
)
1376 DEBUGP(3, dev
, "-> start_monitor\n");
1377 if (!dev
->monitor_running
) {
1378 DEBUGP(5, dev
, "create, init and add timer\n");
1379 setup_timer(&dev
->timer
, monitor_card
, (unsigned long)dev
);
1380 dev
->monitor_running
= 1;
1381 mod_timer(&dev
->timer
, jiffies
);
1383 DEBUGP(5, dev
, "monitor already running\n");
1384 DEBUGP(3, dev
, "<- start_monitor\n");
1387 static void stop_monitor(struct cm4000_dev
*dev
)
1389 DEBUGP(3, dev
, "-> stop_monitor\n");
1390 if (dev
->monitor_running
) {
1391 DEBUGP(5, dev
, "stopping monitor\n");
1392 terminate_monitor(dev
);
1393 /* reset monitor SM */
1394 clear_bit(IS_ATR_VALID
, &dev
->flags
);
1395 clear_bit(IS_ATR_PRESENT
, &dev
->flags
);
1397 DEBUGP(5, dev
, "monitor already stopped\n");
1398 DEBUGP(3, dev
, "<- stop_monitor\n");
1401 static long cmm_ioctl(struct file
*filp
, unsigned int cmd
, unsigned long arg
)
1403 struct cm4000_dev
*dev
= filp
->private_data
;
1404 unsigned int iobase
= dev
->p_dev
->resource
[0]->start
;
1405 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
1406 struct pcmcia_device
*link
;
1409 void __user
*argp
= (void __user
*)arg
;
1411 char *ioctl_names
[CM_IOC_MAXNR
+ 1] = {
1412 [_IOC_NR(CM_IOCGSTATUS
)] "CM_IOCGSTATUS",
1413 [_IOC_NR(CM_IOCGATR
)] "CM_IOCGATR",
1414 [_IOC_NR(CM_IOCARDOFF
)] "CM_IOCARDOFF",
1415 [_IOC_NR(CM_IOCSPTS
)] "CM_IOCSPTS",
1416 [_IOC_NR(CM_IOSDBGLVL
)] "CM4000_DBGLVL",
1418 DEBUGP(3, dev
, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode
),
1419 iminor(inode
), ioctl_names
[_IOC_NR(cmd
)]);
1422 mutex_lock(&cmm_mutex
);
1424 link
= dev_table
[iminor(inode
)];
1425 if (!pcmcia_dev_present(link
)) {
1426 DEBUGP(4, dev
, "DEV_OK false\n");
1430 if (test_bit(IS_CMM_ABSENT
, &dev
->flags
)) {
1431 DEBUGP(4, dev
, "CMM_ABSENT flag set\n");
1436 if (_IOC_TYPE(cmd
) != CM_IOC_MAGIC
) {
1437 DEBUGP(4, dev
, "ioctype mismatch\n");
1440 if (_IOC_NR(cmd
) > CM_IOC_MAXNR
) {
1441 DEBUGP(4, dev
, "iocnr mismatch\n");
1444 size
= _IOC_SIZE(cmd
);
1446 DEBUGP(4, dev
, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1447 _IOC_DIR(cmd
), _IOC_READ
, _IOC_WRITE
, size
, cmd
);
1449 if (_IOC_DIR(cmd
) & _IOC_READ
) {
1450 if (!access_ok(VERIFY_WRITE
, argp
, size
))
1453 if (_IOC_DIR(cmd
) & _IOC_WRITE
) {
1454 if (!access_ok(VERIFY_READ
, argp
, size
))
1461 DEBUGP(4, dev
, " ... in CM_IOCGSTATUS\n");
1465 /* clear other bits, but leave inserted & powered as
1467 status
= dev
->flags0
& 3;
1468 if (test_bit(IS_ATR_PRESENT
, &dev
->flags
))
1469 status
|= CM_ATR_PRESENT
;
1470 if (test_bit(IS_ATR_VALID
, &dev
->flags
))
1471 status
|= CM_ATR_VALID
;
1472 if (test_bit(IS_CMM_ABSENT
, &dev
->flags
))
1473 status
|= CM_NO_READER
;
1474 if (test_bit(IS_BAD_CARD
, &dev
->flags
))
1475 status
|= CM_BAD_CARD
;
1476 if (copy_to_user(argp
, &status
, sizeof(int)))
1481 DEBUGP(4, dev
, "... in CM_IOCGATR\n");
1483 struct atreq __user
*atreq
= argp
;
1485 /* allow nonblocking io and being interrupted */
1486 if (wait_event_interruptible
1488 ((filp
->f_flags
& O_NONBLOCK
)
1489 || (test_bit(IS_ATR_PRESENT
, (void *)&dev
->flags
)
1491 if (filp
->f_flags
& O_NONBLOCK
)
1499 if (test_bit(IS_ATR_VALID
, &dev
->flags
) == 0) {
1501 if (copy_to_user(&(atreq
->atr_len
), &tmp
,
1505 if (copy_to_user(atreq
->atr
, dev
->atr
,
1510 if (copy_to_user(&(atreq
->atr_len
), &tmp
, sizeof(int)))
1519 DEBUGP(4, dev
, "... in CM_IOCARDOFF\n");
1520 if (dev
->flags0
& 0x01) {
1521 DEBUGP(4, dev
, " Card inserted\n");
1523 DEBUGP(2, dev
, " No card inserted\n");
1525 if (dev
->flags0
& 0x02) {
1526 DEBUGP(4, dev
, " Card powered\n");
1528 DEBUGP(2, dev
, " Card not powered\n");
1532 /* is a card inserted and powered? */
1533 if ((dev
->flags0
& 0x01) && (dev
->flags0
& 0x02)) {
1536 if (wait_event_interruptible
1538 ((filp
->f_flags
& O_NONBLOCK
)
1539 || (test_and_set_bit(LOCK_IO
, (void *)&dev
->flags
)
1541 if (filp
->f_flags
& O_NONBLOCK
)
1547 /* Set Flags0 = 0x42 */
1548 DEBUGP(4, dev
, "Set Flags0=0x42 \n");
1549 xoutb(0x42, REG_FLAGS0(iobase
));
1550 clear_bit(IS_ATR_PRESENT
, &dev
->flags
);
1551 clear_bit(IS_ATR_VALID
, &dev
->flags
);
1552 dev
->mstate
= M_CARDOFF
;
1553 clear_bit(LOCK_IO
, &dev
->flags
);
1554 if (wait_event_interruptible
1556 ((filp
->f_flags
& O_NONBLOCK
)
1557 || (test_bit(IS_ATR_VALID
, (void *)&dev
->flags
) !=
1559 if (filp
->f_flags
& O_NONBLOCK
)
1567 clear_bit(LOCK_IO
, &dev
->flags
);
1568 wake_up_interruptible(&dev
->ioq
);
1574 struct ptsreq krnptsreq
;
1576 if (copy_from_user(&krnptsreq
, argp
,
1577 sizeof(struct ptsreq
))) {
1583 DEBUGP(4, dev
, "... in CM_IOCSPTS\n");
1584 /* wait for ATR to get valid */
1585 if (wait_event_interruptible
1587 ((filp
->f_flags
& O_NONBLOCK
)
1588 || (test_bit(IS_ATR_PRESENT
, (void *)&dev
->flags
)
1590 if (filp
->f_flags
& O_NONBLOCK
)
1597 if (wait_event_interruptible
1599 ((filp
->f_flags
& O_NONBLOCK
)
1600 || (test_and_set_bit(LOCK_IO
, (void *)&dev
->flags
)
1602 if (filp
->f_flags
& O_NONBLOCK
)
1609 if ((rc
= set_protocol(dev
, &krnptsreq
)) != 0) {
1610 /* auto power_on again */
1611 dev
->mstate
= M_FETCH_ATR
;
1612 clear_bit(IS_ATR_VALID
, &dev
->flags
);
1615 clear_bit(LOCK_IO
, &dev
->flags
);
1616 wake_up_interruptible(&dev
->ioq
);
1626 DEBUGP(4, dev
, "... in default (unknown IOCTL code)\n");
1630 mutex_unlock(&cmm_mutex
);
1634 static int cmm_open(struct inode
*inode
, struct file
*filp
)
1636 struct cm4000_dev
*dev
;
1637 struct pcmcia_device
*link
;
1638 int minor
= iminor(inode
);
1641 if (minor
>= CM4000_MAX_DEV
)
1644 mutex_lock(&cmm_mutex
);
1645 link
= dev_table
[minor
];
1646 if (link
== NULL
|| !pcmcia_dev_present(link
)) {
1657 filp
->private_data
= dev
;
1659 DEBUGP(2, dev
, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1660 imajor(inode
), minor
, current
->comm
, current
->pid
);
1662 /* init device variables, they may be "polluted" after close
1663 * or, the device may never have been closed (i.e. open failed)
1668 /* opening will always block since the
1669 * monitor will be started by open, which
1670 * means we have to wait for ATR becoming
1671 * vaild = block until valid (or card
1674 if (filp
->f_flags
& O_NONBLOCK
) {
1679 dev
->mdelay
= T_50MSEC
;
1681 /* start monitoring the cardstatus */
1684 link
->open
= 1; /* only one open per device */
1686 DEBUGP(2, dev
, "<- cmm_open\n");
1687 ret
= nonseekable_open(inode
, filp
);
1689 mutex_unlock(&cmm_mutex
);
1693 static int cmm_close(struct inode
*inode
, struct file
*filp
)
1695 struct cm4000_dev
*dev
;
1696 struct pcmcia_device
*link
;
1697 int minor
= iminor(inode
);
1699 if (minor
>= CM4000_MAX_DEV
)
1702 link
= dev_table
[minor
];
1708 DEBUGP(2, dev
, "-> cmm_close(maj/min=%d.%d)\n",
1709 imajor(inode
), minor
);
1715 link
->open
= 0; /* only one open per device */
1716 wake_up(&dev
->devq
); /* socket removed? */
1718 DEBUGP(2, dev
, "cmm_close\n");
1722 static void cmm_cm4000_release(struct pcmcia_device
* link
)
1724 struct cm4000_dev
*dev
= link
->priv
;
1726 /* dont terminate the monitor, rather rely on
1727 * close doing that for us.
1729 DEBUGP(3, dev
, "-> cmm_cm4000_release\n");
1730 while (link
->open
) {
1731 printk(KERN_INFO MODULE_NAME
": delaying release until "
1732 "process has terminated\n");
1733 /* note: don't interrupt us:
1734 * close the applications which own
1735 * the devices _first_ !
1737 wait_event(dev
->devq
, (link
->open
== 0));
1739 /* dev->devq=NULL; this cannot be zeroed earlier */
1740 DEBUGP(3, dev
, "<- cmm_cm4000_release\n");
1744 /*==== Interface to PCMCIA Layer =======================================*/
1746 static int cm4000_config_check(struct pcmcia_device
*p_dev
,
1747 cistpl_cftable_entry_t
*cfg
,
1748 cistpl_cftable_entry_t
*dflt
,
1755 p_dev
->resource
[0]->start
= cfg
->io
.win
[0].base
;
1756 p_dev
->resource
[0]->end
= cfg
->io
.win
[0].len
;
1757 p_dev
->resource
[0]->flags
|= pcmcia_io_cfg_data_width(cfg
->io
.flags
);
1758 p_dev
->io_lines
= cfg
->io
.flags
& CISTPL_IO_LINES_MASK
;
1760 return pcmcia_request_io(p_dev
);
1763 static int cm4000_config(struct pcmcia_device
* link
, int devno
)
1765 struct cm4000_dev
*dev
;
1767 /* read the config-tuples */
1768 if (pcmcia_loop_config(link
, cm4000_config_check
, NULL
))
1771 link
->conf
.IntType
= 00000002;
1773 if (pcmcia_request_configuration(link
, &link
->conf
))
1781 cm4000_release(link
);
1785 static int cm4000_suspend(struct pcmcia_device
*link
)
1787 struct cm4000_dev
*dev
;
1795 static int cm4000_resume(struct pcmcia_device
*link
)
1797 struct cm4000_dev
*dev
;
1806 static void cm4000_release(struct pcmcia_device
*link
)
1808 cmm_cm4000_release(link
); /* delay release until device closed */
1809 pcmcia_disable_device(link
);
1812 static int cm4000_probe(struct pcmcia_device
*link
)
1814 struct cm4000_dev
*dev
;
1817 for (i
= 0; i
< CM4000_MAX_DEV
; i
++)
1818 if (dev_table
[i
] == NULL
)
1821 if (i
== CM4000_MAX_DEV
) {
1822 printk(KERN_NOTICE MODULE_NAME
": all devices in use\n");
1826 /* create a new cm4000_cs device */
1827 dev
= kzalloc(sizeof(struct cm4000_dev
), GFP_KERNEL
);
1833 link
->conf
.IntType
= INT_MEMORY_AND_IO
;
1834 dev_table
[i
] = link
;
1836 init_waitqueue_head(&dev
->devq
);
1837 init_waitqueue_head(&dev
->ioq
);
1838 init_waitqueue_head(&dev
->atrq
);
1839 init_waitqueue_head(&dev
->readq
);
1841 ret
= cm4000_config(link
, i
);
1843 dev_table
[i
] = NULL
;
1848 device_create(cmm_class
, NULL
, MKDEV(major
, i
), NULL
, "cmm%d", i
);
1853 static void cm4000_detach(struct pcmcia_device
*link
)
1855 struct cm4000_dev
*dev
= link
->priv
;
1859 for (devno
= 0; devno
< CM4000_MAX_DEV
; devno
++)
1860 if (dev_table
[devno
] == link
)
1862 if (devno
== CM4000_MAX_DEV
)
1867 cm4000_release(link
);
1869 dev_table
[devno
] = NULL
;
1872 device_destroy(cmm_class
, MKDEV(major
, devno
));
1877 static const struct file_operations cm4000_fops
= {
1878 .owner
= THIS_MODULE
,
1881 .unlocked_ioctl
= cmm_ioctl
,
1883 .release
= cmm_close
,
1886 static struct pcmcia_device_id cm4000_ids
[] = {
1887 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1888 PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1891 MODULE_DEVICE_TABLE(pcmcia
, cm4000_ids
);
1893 static struct pcmcia_driver cm4000_driver
= {
1894 .owner
= THIS_MODULE
,
1896 .name
= "cm4000_cs",
1898 .probe
= cm4000_probe
,
1899 .remove
= cm4000_detach
,
1900 .suspend
= cm4000_suspend
,
1901 .resume
= cm4000_resume
,
1902 .id_table
= cm4000_ids
,
1905 static int __init
cmm_init(void)
1909 printk(KERN_INFO
"%s\n", version
);
1911 cmm_class
= class_create(THIS_MODULE
, "cardman_4000");
1912 if (IS_ERR(cmm_class
))
1913 return PTR_ERR(cmm_class
);
1915 major
= register_chrdev(0, DEVICE_NAME
, &cm4000_fops
);
1917 printk(KERN_WARNING MODULE_NAME
1918 ": could not get major number\n");
1919 class_destroy(cmm_class
);
1923 rc
= pcmcia_register_driver(&cm4000_driver
);
1925 unregister_chrdev(major
, DEVICE_NAME
);
1926 class_destroy(cmm_class
);
1933 static void __exit
cmm_exit(void)
1935 printk(KERN_INFO MODULE_NAME
": unloading\n");
1936 pcmcia_unregister_driver(&cm4000_driver
);
1937 unregister_chrdev(major
, DEVICE_NAME
);
1938 class_destroy(cmm_class
);
1941 module_init(cmm_init
);
1942 module_exit(cmm_exit
);
1943 MODULE_LICENSE("Dual BSD/GPL");