[PATCH] New Omnikey Cardman 4000 driver
Harald Welte [Mon, 14 Nov 2005 00:06:29 +0000 (16:06 -0800)]
Add new Omnikey Cardman 4000 smartcard reader driver

Signed-off-by: Harald Welte <laforge@gnumonks.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

MAINTAINERS
drivers/char/pcmcia/Kconfig
drivers/char/pcmcia/Makefile
drivers/char/pcmcia/cm4000_cs.c [new file with mode: 0644]
include/linux/cm4000_cs.h [new file with mode: 0644]

index c1350d7..cc92407 100644 (file)
@@ -1873,6 +1873,11 @@ L:       linux-tr@linuxtr.net
 W:     http://www.linuxtr.net
 S:     Maintained
 
+OMNIKEY CARDMAN 4000 DRIVER
+P:     Harald Welte
+M:     laforge@gnumonks.org
+S:     Maintained
+
 OMNIKEY CARDMAN 4040 DRIVER
 P:     Harald Welte
 M:     laforge@gnumonks.org
index e8d41f3..27c1179 100644 (file)
@@ -18,6 +18,17 @@ config SYNCLINK_CS
          The module will be called synclinkmp.  If you want to do that, say M
          here.
 
+config CARDMAN_4000
+       tristate "Omnikey Cardman 4000 support"
+       depends on PCMCIA
+       help
+         Enable support for the Omnikey Cardman 4000 PCMCIA Smartcard
+         reader.
+
+         This kernel driver requires additional userspace support, either
+         by the vendor-provided PC/SC ifd_handler (http://www.omnikey.com/),
+         or via the cm4000 backend of OpenCT (http://www.opensc.com/).
+
 config CARDMAN_4040
        tristate "Omnikey CardMan 4040 support"
        depends on PCMCIA
index 35cd766..0aae209 100644 (file)
@@ -5,4 +5,5 @@
 #
 
 obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o
+obj-$(CONFIG_CARDMAN_4000) += cm4000_cs.o
 obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
new file mode 100644 (file)
index 0000000..ef011ef
--- /dev/null
@@ -0,0 +1,2078 @@
+ /*
+  * A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000"
+  *
+  * cm4000_cs.c support.linux@omnikey.com
+  *
+  * Tue Oct 23 11:32:43 GMT 2001 herp - cleaned up header files
+  * Sun Jan 20 10:11:15 MET 2002 herp - added modversion header files
+  * Thu Nov 14 16:34:11 GMT 2002 mh   - added PPS functionality
+  * Tue Nov 19 16:36:27 GMT 2002 mh   - added SUSPEND/RESUME functionailty
+  * Wed Jul 28 12:55:01 CEST 2004 mh  - kernel 2.6 adjustments
+  *
+  * current version: 2.4.0gm4
+  *
+  * (C) 2000,2001,2002,2003,2004 Omnikey AG
+  *
+  * (C) 2005 Harald Welte <laforge@gnumonks.org>
+  *    - Adhere to Kernel CodingStyle
+  *    - Port to 2.6.13 "new" style PCMCIA
+  *    - Check for copy_{from,to}_user return values
+  *    - Use nonseekable_open()
+  *
+  * All rights reserved. Licensed under dual BSD/GPL license.
+  */
+
+/* #define PCMCIA_DEBUG 6 */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+
+#include <linux/cm4000_cs.h>
+
+/* #define ATR_CSUM */
+
+#ifdef PCMCIA_DEBUG
+#define reader_to_dev(x)       (&handle_to_dev(x->link.handle))
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0600);
+#define DEBUGP(n, rdr, x, args...) do {                                \
+       if (pc_debug >= (n))                                            \
+               dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x,     \
+                          __FUNCTION__ , ## args);                     \
+       } while (0)
+#else
+#define DEBUGP(n, rdr, x, args...)
+#endif
+static char *version = "cm4000_cs.c v2.4.0gm5 - All bugs added by Harald Welte";
+
+#define        T_1SEC          (HZ)
+#define        T_10MSEC        msecs_to_jiffies(10)
+#define        T_20MSEC        msecs_to_jiffies(20)
+#define        T_40MSEC        msecs_to_jiffies(40)
+#define        T_50MSEC        msecs_to_jiffies(50)
+#define        T_100MSEC       msecs_to_jiffies(100)
+#define        T_500MSEC       msecs_to_jiffies(500)
+
+static void cm4000_detach(dev_link_t *link);
+static void cm4000_release(dev_link_t *link);
+
+static int major;              /* major number we get from the kernel */
+
+/* note: the first state has to have number 0 always */
+
+#define        M_FETCH_ATR     0
+#define        M_TIMEOUT_WAIT  1
+#define        M_READ_ATR_LEN  2
+#define        M_READ_ATR      3
+#define        M_ATR_PRESENT   4
+#define        M_BAD_CARD      5
+#define M_CARDOFF      6
+
+#define        LOCK_IO                 0
+#define        LOCK_MONITOR            1
+
+#define IS_AUTOPPS_ACT          6
+#define        IS_PROCBYTE_PRESENT      7
+#define        IS_INVREV                8
+#define IS_ANY_T0               9
+#define        IS_ANY_T1               10
+#define        IS_ATR_PRESENT          11
+#define        IS_ATR_VALID            12
+#define        IS_CMM_ABSENT           13
+#define        IS_BAD_LENGTH           14
+#define        IS_BAD_CSUM             15
+#define        IS_BAD_CARD             16
+
+#define REG_FLAGS0(x)          (x + 0)
+#define REG_FLAGS1(x)          (x + 1)
+#define REG_NUM_BYTES(x)       (x + 2)
+#define REG_BUF_ADDR(x)                (x + 3)
+#define REG_BUF_DATA(x)                (x + 4)
+#define REG_NUM_SEND(x)                (x + 5)
+#define REG_BAUDRATE(x)                (x + 6)
+#define REG_STOPBITS(x)                (x + 7)
+
+struct cm4000_dev {
+       dev_link_t link;                /* pcmcia link */
+       dev_node_t node;                /* OS node (major,minor) */
+
+       unsigned char atr[MAX_ATR];
+       unsigned char rbuf[512];
+       unsigned char sbuf[512];
+
+       wait_queue_head_t devq;         /* when removing cardman must not be
+                                          zeroed! */
+
+       wait_queue_head_t ioq;          /* if IO is locked, wait on this Q */
+       wait_queue_head_t atrq;         /* wait for ATR valid */
+       wait_queue_head_t readq;        /* used by write to wake blk.read */
+
+       /* warning: do not move this fields.
+        * initialising to zero depends on it - see ZERO_DEV below.  */
+       unsigned char atr_csum;
+       unsigned char atr_len_retry;
+       unsigned short atr_len;
+       unsigned short rlen;    /* bytes avail. after write */
+       unsigned short rpos;    /* latest read pos. write zeroes */
+       unsigned char procbyte; /* T=0 procedure byte */
+       unsigned char mstate;   /* state of card monitor */
+       unsigned char cwarn;    /* slow down warning */
+       unsigned char flags0;   /* cardman IO-flags 0 */
+       unsigned char flags1;   /* cardman IO-flags 1 */
+       unsigned int mdelay;    /* variable monitor speeds, in jiffies */
+
+       unsigned int baudv;     /* baud value for speed */
+       unsigned char ta1;
+       unsigned char proto;    /* T=0, T=1, ... */
+       unsigned long flags;    /* lock+flags (MONITOR,IO,ATR) * for concurrent
+                                  access */
+
+       unsigned char pts[4];
+
+       struct timer_list timer;        /* used to keep monitor running */
+       int monitor_running;
+};
+
+#define        ZERO_DEV(dev)                                           \
+       memset(&dev->atr_csum,0,                                \
+               sizeof(struct cm4000_dev) -                     \
+               /*link*/ sizeof(dev_link_t) -                   \
+               /*node*/ sizeof(dev_node_t) -                   \
+               /*atr*/ MAX_ATR*sizeof(char) -                  \
+               /*rbuf*/ 512*sizeof(char) -                     \
+               /*sbuf*/ 512*sizeof(char) -                     \
+               /*queue*/ 4*sizeof(wait_queue_head_t))
+
+static dev_info_t dev_info = MODULE_NAME;
+static dev_link_t *dev_table[CM4000_MAX_DEV];
+
+/* This table doesn't use spaces after the comma between fields and thus
+ * violates CodingStyle.  However, I don't really think wrapping it around will
+ * make it any clearer to read -HW */
+static unsigned char fi_di_table[10][14] = {
+/*FI     00   01   02   03   04   05   06   07   08   09   10   11   12   13 */
+/*DI */
+/* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
+/* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
+/* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
+/* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
+/* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
+/* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
+/* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
+/* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
+/* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
+/* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
+};
+
+#ifndef PCMCIA_DEBUG
+#define        xoutb   outb
+#define        xinb    inb
+#else
+static inline void xoutb(unsigned char val, unsigned short port)
+{
+       if (pc_debug >= 7)
+               printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
+       outb(val, port);
+}
+static inline unsigned char xinb(unsigned short port)
+{
+       unsigned char val;
+
+       val = inb(port);
+       if (pc_debug >= 7)
+               printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
+
+       return val;
+}
+#endif
+
+#define        b_0000  15
+#define        b_0001  14
+#define        b_0010  13
+#define        b_0011  12
+#define        b_0100  11
+#define        b_0101  10
+#define        b_0110  9
+#define        b_0111  8
+#define        b_1000  7
+#define        b_1001  6
+#define        b_1010  5
+#define        b_1011  4
+#define        b_1100  3
+#define        b_1101  2
+#define        b_1110  1
+#define        b_1111  0
+
+static unsigned char irtab[16] = {
+       b_0000, b_1000, b_0100, b_1100,
+       b_0010, b_1010, b_0110, b_1110,
+       b_0001, b_1001, b_0101, b_1101,
+       b_0011, b_1011, b_0111, b_1111
+};
+
+static void str_invert_revert(unsigned char *b, int len)
+{
+       int i;
+
+       for (i = 0; i < len; i++)
+               b[i] = (irtab[b[i] & 0x0f] << 4) | irtab[b[i] >> 4];
+}
+
+static unsigned char invert_revert(unsigned char ch)
+{
+       return (irtab[ch & 0x0f] << 4) | irtab[ch >> 4];
+}
+
+#define        ATRLENCK(dev,pos) \
+       if (pos>=dev->atr_len || pos>=MAX_ATR) \
+               goto return_0;
+
+static unsigned int calc_baudv(unsigned char fidi)
+{
+       unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
+
+       fi_rfu = 372;
+       di_rfu = 1;
+
+       /* FI */
+       switch ((fidi >> 4) & 0x0F) {
+       case 0x00:
+               wcrcf = 372;
+               break;
+       case 0x01:
+               wcrcf = 372;
+               break;
+       case 0x02:
+               wcrcf = 558;
+               break;
+       case 0x03:
+               wcrcf = 744;
+               break;
+       case 0x04:
+               wcrcf = 1116;
+               break;
+       case 0x05:
+               wcrcf = 1488;
+               break;
+       case 0x06:
+               wcrcf = 1860;
+               break;
+       case 0x07:
+               wcrcf = fi_rfu;
+               break;
+       case 0x08:
+               wcrcf = fi_rfu;
+               break;
+       case 0x09:
+               wcrcf = 512;
+               break;
+       case 0x0A:
+               wcrcf = 768;
+               break;
+       case 0x0B:
+               wcrcf = 1024;
+               break;
+       case 0x0C:
+               wcrcf = 1536;
+               break;
+       case 0x0D:
+               wcrcf = 2048;
+               break;
+       default:
+               wcrcf = fi_rfu;
+               break;
+       }
+
+       /* DI */
+       switch (fidi & 0x0F) {
+       case 0x00:
+               wbrcf = di_rfu;
+               break;
+       case 0x01:
+               wbrcf = 1;
+               break;
+       case 0x02:
+               wbrcf = 2;
+               break;
+       case 0x03:
+               wbrcf = 4;
+               break;
+       case 0x04:
+               wbrcf = 8;
+               break;
+       case 0x05:
+               wbrcf = 16;
+               break;
+       case 0x06:
+               wbrcf = 32;
+               break;
+       case 0x07:
+               wbrcf = di_rfu;
+               break;
+       case 0x08:
+               wbrcf = 12;
+               break;
+       case 0x09:
+               wbrcf = 20;
+               break;
+       default:
+               wbrcf = di_rfu;
+               break;
+       }
+
+       return (wcrcf / wbrcf);
+}
+
+static unsigned short io_read_num_rec_bytes(ioaddr_t iobase, unsigned short *s)
+{
+       unsigned short tmp;
+
+       tmp = *s = 0;
+       do {
+               *s = tmp;
+               tmp = inb(REG_NUM_BYTES(iobase)) |
+                               (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
+       } while (tmp != *s);
+
+       return *s;
+}
+
+static int parse_atr(struct cm4000_dev *dev)
+{
+       unsigned char any_t1, any_t0;
+       unsigned char ch, ifno;
+       int ix, done;
+
+       DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
+
+       if (dev->atr_len < 3) {
+               DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
+               return 0;
+       }
+
+       if (dev->atr[0] == 0x3f)
+               set_bit(IS_INVREV, &dev->flags);
+       else
+               clear_bit(IS_INVREV, &dev->flags);
+       ix = 1;
+       ifno = 1;
+       ch = dev->atr[1];
+       dev->proto = 0;         /* XXX PROTO */
+       any_t1 = any_t0 = done = 0;
+       dev->ta1 = 0x11;        /* defaults to 9600 baud */
+       do {
+               if (ifno == 1 && (ch & 0x10)) {
+                       /* read first interface byte and TA1 is present */
+                       dev->ta1 = dev->atr[2];
+                       DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
+                       ifno++;
+               } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
+                       dev->ta1 = 0x11;
+                       ifno++;
+               }
+
+               DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
+               ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
+                   +((ch & 0x20) >> 5)
+                   + ((ch & 0x40) >> 6)
+                   + ((ch & 0x80) >> 7);
+               /* ATRLENCK(dev,ix); */
+               if (ch & 0x80) {        /* TDi */
+                       ch = dev->atr[ix];
+                       if ((ch & 0x0f)) {
+                               any_t1 = 1;
+                               DEBUGP(5, dev, "card is capable of T=1\n");
+                       } else {
+                               any_t0 = 1;
+                               DEBUGP(5, dev, "card is capable of T=0\n");
+                       }
+               } else
+                       done = 1;
+       } while (!done);
+
+       DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
+             ix, dev->atr[1] & 15, any_t1);
+       if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
+               DEBUGP(5, dev, "length error\n");
+               return 0;
+       }
+       if (any_t0)
+               set_bit(IS_ANY_T0, &dev->flags);
+
+       if (any_t1) {           /* compute csum */
+               dev->atr_csum = 0;
+#ifdef ATR_CSUM
+               for (i = 1; i < dev->atr_len; i++)
+                       dev->atr_csum ^= dev->atr[i];
+               if (dev->atr_csum) {
+                       set_bit(IS_BAD_CSUM, &dev->flags);
+                       DEBUGP(5, dev, "bad checksum\n");
+                       goto return_0;
+               }
+#endif
+               if (any_t0 == 0)
+                       dev->proto = 1; /* XXX PROTO */
+               set_bit(IS_ANY_T1, &dev->flags);
+       }
+
+       return 1;
+}
+
+struct card_fixup {
+       char atr[12];
+       u_int8_t atr_len;
+       u_int8_t stopbits;
+};
+
+static struct card_fixup card_fixups[] = {
+       {       /* ACOS */
+               .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
+               .atr_len = 7,
+               .stopbits = 0x03,
+       },
+       {       /* Motorola */
+               .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
+                       0x41, 0x81, 0x81 },
+               .atr_len = 11,
+               .stopbits = 0x04,
+       },
+};
+
+static void set_cardparameter(struct cm4000_dev *dev)
+{
+       int i;
+       ioaddr_t iobase = dev->link.io.BasePort1;
+       u_int8_t stopbits = 0x02; /* ISO default */
+
+       DEBUGP(3, dev, "-> set_cardparameter\n");
+
+       dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
+       xoutb(dev->flags1, REG_FLAGS1(iobase));
+       DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
+
+       /* set baudrate */
+       xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
+
+       DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
+             ((dev->baudv - 1) & 0xFF));
+
+       /* set stopbits */
+       for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
+               if (!memcmp(dev->atr, card_fixups[i].atr,
+                           card_fixups[i].atr_len))
+                       stopbits = card_fixups[i].stopbits;
+       }
+       xoutb(stopbits, REG_STOPBITS(iobase));
+
+       DEBUGP(3, dev, "<- set_cardparameter\n");
+}
+
+static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
+{
+
+       unsigned long tmp, i;
+       unsigned short num_bytes_read;
+       unsigned char pts_reply[4];
+       ssize_t rc;
+       ioaddr_t iobase = dev->link.io.BasePort1;
+
+       rc = 0;
+
+       DEBUGP(3, dev, "-> set_protocol\n");
+       DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
+                "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
+                "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
+                (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
+                ptsreq->pts3);
+
+       /* Fill PTS structure */
+       dev->pts[0] = 0xff;
+       dev->pts[1] = 0x00;
+       tmp = ptsreq->protocol;
+       while ((tmp = (tmp >> 1)) > 0)
+               dev->pts[1]++;
+       dev->proto = dev->pts[1];       /* Set new protocol */
+       dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
+
+       /* Correct Fi/Di according to CM4000 Fi/Di table */
+       DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
+       /* set Fi/Di according to ATR TA(1) */
+       dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
+
+       /* Calculate PCK character */
+       dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
+
+       DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
+              dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
+
+       /* check card convention */
+       if (test_bit(IS_INVREV, &dev->flags))
+               str_invert_revert(dev->pts, 4);
+
+       /* reset SM */
+       xoutb(0x80, REG_FLAGS0(iobase));
+
+       /* Enable access to the message buffer */
+       DEBUGP(5, dev, "Enable access to the messages buffer\n");
+       dev->flags1 = 0x20      /* T_Active */
+           | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
+           | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
+       xoutb(dev->flags1, REG_FLAGS1(iobase));
+
+       DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
+              dev->flags1);
+
+       /* write challenge to the buffer */
+       DEBUGP(5, dev, "Write challenge to buffer: ");
+       for (i = 0; i < 4; i++) {
+               xoutb(i, REG_BUF_ADDR(iobase));
+               xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
+#ifdef PCMCIA_DEBUG
+               if (pc_debug >= 5)
+                       printk("0x%.2x ", dev->pts[i]);
+       }
+       if (pc_debug >= 5)
+               printk("\n");
+#else
+       }
+#endif
+
+       /* set number of bytes to write */
+       DEBUGP(5, dev, "Set number of bytes to write\n");
+       xoutb(0x04, REG_NUM_SEND(iobase));
+
+       /* Trigger CARDMAN CONTROLLER */
+       xoutb(0x50, REG_FLAGS0(iobase));
+
+       /* Monitor progress */
+       /* wait for xmit done */
+       DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
+
+       for (i = 0; i < 100; i++) {
+               if (inb(REG_FLAGS0(iobase)) & 0x08) {
+                       DEBUGP(5, dev, "NumRecBytes is valid\n");
+                       break;
+               }
+               mdelay(10);
+       }
+       if (i == 100) {
+               DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
+                      "valid\n");
+               rc = -EIO;
+               goto exit_setprotocol;
+       }
+
+       DEBUGP(5, dev, "Reading NumRecBytes\n");
+       for (i = 0; i < 100; i++) {
+               io_read_num_rec_bytes(iobase, &num_bytes_read);
+               if (num_bytes_read >= 4) {
+                       DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
+                       break;
+               }
+               mdelay(10);
+       }
+
+       /* check whether it is a short PTS reply? */
+       if (num_bytes_read == 3)
+               i = 0;
+
+       if (i == 100) {
+               DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
+               rc = -EIO;
+               goto exit_setprotocol;
+       }
+
+       DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
+       xoutb(0x80, REG_FLAGS0(iobase));
+
+       /* Read PPS reply */
+       DEBUGP(5, dev, "Read PPS reply\n");
+       for (i = 0; i < num_bytes_read; i++) {
+               xoutb(i, REG_BUF_ADDR(iobase));
+               pts_reply[i] = inb(REG_BUF_DATA(iobase));
+       }
+
+#ifdef PCMCIA_DEBUG
+       DEBUGP(2, dev, "PTSreply: ");
+       for (i = 0; i < num_bytes_read; i++) {
+               if (pc_debug >= 5)
+                       printk("0x%.2x ", pts_reply[i]);
+       }
+       printk("\n");
+#endif /* PCMCIA_DEBUG */
+
+       DEBUGP(5, dev, "Clear Tactive in Flags1\n");
+       xoutb(0x20, REG_FLAGS1(iobase));
+
+       /* Compare ptsreq and ptsreply */
+       if ((dev->pts[0] == pts_reply[0]) &&
+           (dev->pts[1] == pts_reply[1]) &&
+           (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
+               /* setcardparameter according to PPS */
+               dev->baudv = calc_baudv(dev->pts[2]);
+               set_cardparameter(dev);
+       } else if ((dev->pts[0] == pts_reply[0]) &&
+                  ((dev->pts[1] & 0xef) == pts_reply[1]) &&
+                  ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
+               /* short PTS reply, set card parameter to default values */
+               dev->baudv = calc_baudv(0x11);
+               set_cardparameter(dev);
+       } else
+               rc = -EIO;
+
+exit_setprotocol:
+       DEBUGP(3, dev, "<- set_protocol\n");
+       return rc;
+}
+
+static int io_detect_cm4000(ioaddr_t iobase, struct cm4000_dev *dev)
+{
+
+       /* note: statemachine is assumed to be reset */
+       if (inb(REG_FLAGS0(iobase)) & 8) {
+               clear_bit(IS_ATR_VALID, &dev->flags);
+               set_bit(IS_CMM_ABSENT, &dev->flags);
+               return 0;       /* detect CMM = 1 -> failure */
+       }
+       /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
+       xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
+       if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
+               clear_bit(IS_ATR_VALID, &dev->flags);
+               set_bit(IS_CMM_ABSENT, &dev->flags);
+               return 0;       /* detect CMM=0 -> failure */
+       }
+       /* clear detectCMM again by restoring original flags1 */
+       xoutb(dev->flags1, REG_FLAGS1(iobase));
+       return 1;
+}
+
+static void terminate_monitor(struct cm4000_dev *dev)
+{
+
+       /* tell the monitor to stop and wait until
+        * it terminates.
+        */
+       DEBUGP(3, dev, "-> terminate_monitor\n");
+       wait_event_interruptible(dev->devq,
+                                test_and_set_bit(LOCK_MONITOR,
+                                                 (void *)&dev->flags));
+
+       /* now, LOCK_MONITOR has been set.
+        * allow a last cycle in the monitor.
+        * the monitor will indicate that it has
+        * finished by clearing this bit.
+        */
+       DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
+       while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
+               msleep(25);
+
+       DEBUGP(5, dev, "Delete timer\n");
+       del_timer_sync(&dev->timer);
+#ifdef PCMCIA_DEBUG
+       dev->monitor_running = 0;
+#endif
+
+       DEBUGP(3, dev, "<- terminate_monitor\n");
+}
+
+/*
+ * monitor the card every 50msec. as a side-effect, retrieve the
+ * atr once a card is inserted. another side-effect of retrieving the
+ * atr is that the card will be powered on, so there is no need to
+ * power on the card explictely from the application: the driver
+ * is already doing that for you.
+ */
+
+static void monitor_card(unsigned long p)
+{
+       struct cm4000_dev *dev = (struct cm4000_dev *) p;
+       ioaddr_t iobase = dev->link.io.BasePort1;
+       unsigned short s;
+       struct ptsreq ptsreq;
+       int i, atrc;
+
+       DEBUGP(7, dev, "->  monitor_card\n");
+
+       /* if someone has set the lock for us: we're done! */
+       if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
+               DEBUGP(4, dev, "About to stop monitor\n");
+               /* no */
+               dev->rlen =
+                   dev->rpos =
+                   dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
+               dev->mstate = M_FETCH_ATR;
+               clear_bit(LOCK_MONITOR, &dev->flags);
+               /* close et al. are sleeping on devq, so wake it */
+               wake_up_interruptible(&dev->devq);
+               DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
+               return;
+       }
+
+       /* try to lock io: if it is already locked, just add another timer */
+       if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
+               DEBUGP(4, dev, "Couldn't get IO lock\n");
+               goto return_with_timer;
+       }
+
+       /* is a card/a reader inserted at all ? */
+       dev->flags0 = xinb(REG_FLAGS0(iobase));
+       DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
+       DEBUGP(7, dev, "smartcard present: %s\n",
+              dev->flags0 & 1 ? "yes" : "no");
+       DEBUGP(7, dev, "cardman present: %s\n",
+              dev->flags0 == 0xff ? "no" : "yes");
+
+       if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
+           || dev->flags0 == 0xff) {   /* no cardman inserted */
+               /* no */
+               dev->rlen =
+                   dev->rpos =
+                   dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
+               dev->mstate = M_FETCH_ATR;
+
+               dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
+
+               if (dev->flags0 == 0xff) {
+                       DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
+                       set_bit(IS_CMM_ABSENT, &dev->flags);
+               } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
+                       DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
+                              "(card is removed)\n");
+                       clear_bit(IS_CMM_ABSENT, &dev->flags);
+               }
+
+               goto release_io;
+       } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
+               /* cardman and card present but cardman was absent before
+                * (after suspend with inserted card) */
+               DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
+               clear_bit(IS_CMM_ABSENT, &dev->flags);
+       }
+
+       if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
+               DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
+               goto release_io;
+       }
+
+       switch (dev->mstate) {
+               unsigned char flags0;
+       case M_CARDOFF:
+               DEBUGP(4, dev, "M_CARDOFF\n");
+               flags0 = inb(REG_FLAGS0(iobase));
+               if (flags0 & 0x02) {
+                       /* wait until Flags0 indicate power is off */
+                       dev->mdelay = T_10MSEC;
+               } else {
+                       /* Flags0 indicate power off and no card inserted now;
+                        * Reset CARDMAN CONTROLLER */
+                       xoutb(0x80, REG_FLAGS0(iobase));
+
+                       /* prepare for fetching ATR again: after card off ATR
+                        * is read again automatically */
+                       dev->rlen =
+                           dev->rpos =
+                           dev->atr_csum =
+                           dev->atr_len_retry = dev->cwarn = 0;
+                       dev->mstate = M_FETCH_ATR;
+
+                       /* minimal gap between CARDOFF and read ATR is 50msec */
+                       dev->mdelay = T_50MSEC;
+               }
+               break;
+       case M_FETCH_ATR:
+               DEBUGP(4, dev, "M_FETCH_ATR\n");
+               xoutb(0x80, REG_FLAGS0(iobase));
+               DEBUGP(4, dev, "Reset BAUDV to 9600\n");
+               dev->baudv = 0x173;     /* 9600 */
+               xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
+               xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
+               xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
+                                                          value */
+               /* warm start vs. power on: */
+               xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
+               dev->mdelay = T_40MSEC;
+               dev->mstate = M_TIMEOUT_WAIT;
+               break;
+       case M_TIMEOUT_WAIT:
+               DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
+               /* numRecBytes */
+               io_read_num_rec_bytes(iobase, &dev->atr_len);
+               dev->mdelay = T_10MSEC;
+               dev->mstate = M_READ_ATR_LEN;
+               break;
+       case M_READ_ATR_LEN:
+               DEBUGP(4, dev, "M_READ_ATR_LEN\n");
+               /* infinite loop possible, since there is no timeout */
+
+#define        MAX_ATR_LEN_RETRY       100
+
+               if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
+                       if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
+                               dev->mdelay = T_10MSEC;
+                               dev->mstate = M_READ_ATR;
+                       }
+               } else {
+                       dev->atr_len = s;
+                       dev->atr_len_retry = 0; /* set new timeout */
+               }
+
+               DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
+               break;
+       case M_READ_ATR:
+               DEBUGP(4, dev, "M_READ_ATR\n");
+               xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
+               for (i = 0; i < dev->atr_len; i++) {
+                       xoutb(i, REG_BUF_ADDR(iobase));
+                       dev->atr[i] = inb(REG_BUF_DATA(iobase));
+               }
+               /* Deactivate T_Active flags */
+               DEBUGP(4, dev, "Deactivate T_Active flags\n");
+               dev->flags1 = 0x01;
+               xoutb(dev->flags1, REG_FLAGS1(iobase));
+
+               /* atr is present (which doesnt mean it's valid) */
+               set_bit(IS_ATR_PRESENT, &dev->flags);
+               if (dev->atr[0] == 0x03)
+                       str_invert_revert(dev->atr, dev->atr_len);
+               atrc = parse_atr(dev);
+               if (atrc == 0) {        /* atr invalid */
+                       dev->mdelay = 0;
+                       dev->mstate = M_BAD_CARD;
+               } else {
+                       dev->mdelay = T_50MSEC;
+                       dev->mstate = M_ATR_PRESENT;
+                       set_bit(IS_ATR_VALID, &dev->flags);
+               }
+
+               if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
+                       DEBUGP(4, dev, "monitor_card: ATR valid\n");
+                       /* if ta1 == 0x11, no PPS necessary (default values) */
+                       /* do not do PPS with multi protocol cards */
+                       if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
+                           (dev->ta1 != 0x11) &&
+                           !(test_bit(IS_ANY_T0, &dev->flags) &&
+                           test_bit(IS_ANY_T1, &dev->flags))) {
+                               DEBUGP(4, dev, "Perform AUTOPPS\n");
+                               set_bit(IS_AUTOPPS_ACT, &dev->flags);
+                               ptsreq.protocol = ptsreq.protocol =
+                                   (0x01 << dev->proto);
+                               ptsreq.flags = 0x01;
+                               ptsreq.pts1 = 0x00;
+                               ptsreq.pts2 = 0x00;
+                               ptsreq.pts3 = 0x00;
+                               if (set_protocol(dev, &ptsreq) == 0) {
+                                       DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
+                                       clear_bit(IS_AUTOPPS_ACT, &dev->flags);
+                                       wake_up_interruptible(&dev->atrq);
+                               } else {
+                                       DEBUGP(4, dev, "AUTOPPS failed: "
+                                              "repower using defaults\n");
+                                       /* prepare for repowering  */
+                                       clear_bit(IS_ATR_PRESENT, &dev->flags);
+                                       clear_bit(IS_ATR_VALID, &dev->flags);
+                                       dev->rlen =
+                                           dev->rpos =
+                                           dev->atr_csum =
+                                           dev->atr_len_retry = dev->cwarn = 0;
+                                       dev->mstate = M_FETCH_ATR;
+
+                                       dev->mdelay = T_50MSEC;
+                               }
+                       } else {
+                               /* for cards which use slightly different
+                                * params (extra guard time) */
+                               set_cardparameter(dev);
+                               if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
+                                       DEBUGP(4, dev, "AUTOPPS already active "
+                                              "2nd try:use default values\n");
+                               if (dev->ta1 == 0x11)
+                                       DEBUGP(4, dev, "No AUTOPPS necessary "
+                                              "TA(1)==0x11\n");
+                               if (test_bit(IS_ANY_T0, &dev->flags)
+                                   && test_bit(IS_ANY_T1, &dev->flags))
+                                       DEBUGP(4, dev, "Do NOT perform AUTOPPS "
+                                              "with multiprotocol cards\n");
+                               clear_bit(IS_AUTOPPS_ACT, &dev->flags);
+                               wake_up_interruptible(&dev->atrq);
+                       }
+               } else {
+                       DEBUGP(4, dev, "ATR invalid\n");
+                       wake_up_interruptible(&dev->atrq);
+               }
+               break;
+       case M_BAD_CARD:
+               DEBUGP(4, dev, "M_BAD_CARD\n");
+               /* slow down warning, but prompt immediately after insertion */
+               if (dev->cwarn == 0 || dev->cwarn == 10) {
+                       set_bit(IS_BAD_CARD, &dev->flags);
+                       printk(KERN_WARNING MODULE_NAME ": device %s: ",
+                              dev->node.dev_name);
+                       if (test_bit(IS_BAD_CSUM, &dev->flags)) {
+                               DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
+                                      "be zero) failed\n", dev->atr_csum);
+                       }
+#ifdef PCMCIA_DEBUG
+                       else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
+                               DEBUGP(4, dev, "ATR length error\n");
+                       } else {
+                               DEBUGP(4, dev, "card damaged or wrong way "
+                                       "inserted\n");
+                       }
+#endif
+                       dev->cwarn = 0;
+                       wake_up_interruptible(&dev->atrq);      /* wake open */
+               }
+               dev->cwarn++;
+               dev->mdelay = T_100MSEC;
+               dev->mstate = M_FETCH_ATR;
+               break;
+       default:
+               DEBUGP(7, dev, "Unknown action\n");
+               break;          /* nothing */
+       }
+
+release_io:
+       DEBUGP(7, dev, "release_io\n");
+       clear_bit(LOCK_IO, &dev->flags);
+       wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
+
+return_with_timer:
+       DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
+       dev->timer.expires = jiffies + dev->mdelay;
+       add_timer(&dev->timer);
+       clear_bit(LOCK_MONITOR, &dev->flags);
+}
+
+/* Interface to userland (file_operations) */
+
+static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
+                       loff_t *ppos)
+{
+       struct cm4000_dev *dev = filp->private_data;
+       ioaddr_t iobase = dev->link.io.BasePort1;
+       ssize_t rc;
+       int i, j, k;
+
+       DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
+
+       if (count == 0)         /* according to manpage */
+               return 0;
+
+       if ((dev->link.state & DEV_PRESENT) == 0 ||     /* socket removed */
+           test_bit(IS_CMM_ABSENT, &dev->flags))
+               return -ENODEV;
+
+       if (test_bit(IS_BAD_CSUM, &dev->flags))
+               return -EIO;
+
+       /* also see the note about this in cmm_write */
+       if (wait_event_interruptible
+           (dev->atrq,
+            ((filp->f_flags & O_NONBLOCK)
+             || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
+               if (filp->f_flags & O_NONBLOCK)
+                       return -EAGAIN;
+               return -ERESTARTSYS;
+       }
+
+       if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
+               return -EIO;
+
+       /* this one implements blocking IO */
+       if (wait_event_interruptible
+           (dev->readq,
+            ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
+               if (filp->f_flags & O_NONBLOCK)
+                       return -EAGAIN;
+               return -ERESTARTSYS;
+       }
+
+       /* lock io */
+       if (wait_event_interruptible
+           (dev->ioq,
+            ((filp->f_flags & O_NONBLOCK)
+             || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
+               if (filp->f_flags & O_NONBLOCK)
+                       return -EAGAIN;
+               return -ERESTARTSYS;
+       }
+
+       rc = 0;
+       dev->flags0 = inb(REG_FLAGS0(iobase));
+       if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
+           || dev->flags0 == 0xff) {   /* no cardman inserted */
+               clear_bit(IS_ATR_VALID, &dev->flags);
+               if (dev->flags0 & 1) {
+                       set_bit(IS_CMM_ABSENT, &dev->flags);
+                       rc = -ENODEV;
+               }
+               rc = -EIO;
+               goto release_io;
+       }
+
+       DEBUGP(4, dev, "begin read answer\n");
+       j = min(count, (size_t)(dev->rlen - dev->rpos));
+       k = dev->rpos;
+       if (k + j > 255)
+               j = 256 - k;
+       DEBUGP(4, dev, "read1 j=%d\n", j);
+       for (i = 0; i < j; i++) {
+               xoutb(k++, REG_BUF_ADDR(iobase));
+               dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
+       }
+       j = min(count, (size_t)(dev->rlen - dev->rpos));
+       if (k + j > 255) {
+               DEBUGP(4, dev, "read2 j=%d\n", j);
+               dev->flags1 |= 0x10;    /* MSB buf addr set */
+               xoutb(dev->flags1, REG_FLAGS1(iobase));
+               for (; i < j; i++) {
+                       xoutb(k++, REG_BUF_ADDR(iobase));
+                       dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
+               }
+       }
+
+       if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
+               DEBUGP(4, dev, "T=0 and count > buffer\n");
+               dev->rbuf[i] = dev->rbuf[i - 1];
+               dev->rbuf[i - 1] = dev->procbyte;
+               j++;
+       }
+       count = j;
+
+       dev->rpos = dev->rlen + 1;
+
+       /* Clear T1Active */
+       DEBUGP(4, dev, "Clear T1Active\n");
+       dev->flags1 &= 0xdf;
+       xoutb(dev->flags1, REG_FLAGS1(iobase));
+
+       xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
+       /* last check before exit */
+       if (!io_detect_cm4000(iobase, dev))
+               count = -ENODEV;
+
+       if (test_bit(IS_INVREV, &dev->flags) && count > 0)
+               str_invert_revert(dev->rbuf, count);
+
+       if (copy_to_user(buf, dev->rbuf, count))
+               return -EFAULT;
+
+release_io:
+       clear_bit(LOCK_IO, &dev->flags);
+       wake_up_interruptible(&dev->ioq);
+
+       DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
+              (rc < 0 ? rc : count));
+       return rc < 0 ? rc : count;
+}
+
+static ssize_t cmm_write(struct file *filp, const char __user *buf,
+                        size_t count, loff_t *ppos)
+{
+       struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
+       ioaddr_t iobase = dev->link.io.BasePort1;
+       unsigned short s;
+       unsigned char tmp;
+       unsigned char infolen;
+       unsigned char sendT0;
+       unsigned short nsend;
+       unsigned short nr;
+       ssize_t rc;
+       int i;
+
+       DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
+
+       if (count == 0)         /* according to manpage */
+               return 0;
+
+       if (dev->proto == 0 && count < 4) {
+               /* T0 must have at least 4 bytes */
+               DEBUGP(4, dev, "T0 short write\n");
+               return -EIO;
+       }
+
+       nr = count & 0x1ff;     /* max bytes to write */
+
+       sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
+
+       if ((dev->link.state & DEV_PRESENT) == 0 ||     /* socket removed */
+           test_bit(IS_CMM_ABSENT, &dev->flags))
+               return -ENODEV;
+
+       if (test_bit(IS_BAD_CSUM, &dev->flags)) {
+               DEBUGP(4, dev, "bad csum\n");
+               return -EIO;
+       }
+
+       /*
+        * wait for atr to become valid.
+        * note: it is important to lock this code. if we dont, the monitor
+        * could be run between test_bit and the the call the sleep on the
+        * atr-queue.  if *then* the monitor detects atr valid, it will wake up
+        * any process on the atr-queue, *but* since we have been interrupted,
+        * we do not yet sleep on this queue. this would result in a missed
+        * wake_up and the calling process would sleep forever (until
+        * interrupted).  also, do *not* restore_flags before sleep_on, because
+        * this could result in the same situation!
+        */
+       if (wait_event_interruptible
+           (dev->atrq,
+            ((filp->f_flags & O_NONBLOCK)
+             || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
+               if (filp->f_flags & O_NONBLOCK)
+                       return -EAGAIN;
+               return -ERESTARTSYS;
+       }
+
+       if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
+               DEBUGP(4, dev, "invalid ATR\n");
+               return -EIO;
+       }
+
+       /* lock io */
+       if (wait_event_interruptible
+           (dev->ioq,
+            ((filp->f_flags & O_NONBLOCK)
+             || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
+               if (filp->f_flags & O_NONBLOCK)
+                       return -EAGAIN;
+               return -ERESTARTSYS;
+       }
+
+       if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
+               return -EFAULT;
+
+       rc = 0;
+       dev->flags0 = inb(REG_FLAGS0(iobase));
+       if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
+           || dev->flags0 == 0xff) {   /* no cardman inserted */
+               clear_bit(IS_ATR_VALID, &dev->flags);
+               if (dev->flags0 & 1) {
+                       set_bit(IS_CMM_ABSENT, &dev->flags);
+                       rc = -ENODEV;
+               } else {
+                       DEBUGP(4, dev, "IO error\n");
+                       rc = -EIO;
+               }
+               goto release_io;
+       }
+
+       xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
+
+       if (!io_detect_cm4000(iobase, dev)) {
+               rc = -ENODEV;
+               goto release_io;
+       }
+
+       /* reflect T=0 send/read mode in flags1 */
+       dev->flags1 |= (sendT0);
+
+       set_cardparameter(dev);
+
+       /* dummy read, reset flag procedure received */
+       tmp = inb(REG_FLAGS1(iobase));
+
+       dev->flags1 = 0x20      /* T_Active */
+           | (sendT0)
+           | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
+           | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
+       DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
+       xoutb(dev->flags1, REG_FLAGS1(iobase));
+
+       /* xmit data */
+       DEBUGP(4, dev, "Xmit data\n");
+       for (i = 0; i < nr; i++) {
+               if (i >= 256) {
+                       dev->flags1 = 0x20      /* T_Active */
+                           | (sendT0)  /* SendT0 */
+                               /* inverse parity: */
+                           | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
+                           | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
+                           | 0x10;     /* set address high */
+                       DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
+                              "high\n", dev->flags1);
+                       xoutb(dev->flags1, REG_FLAGS1(iobase));
+               }
+               if (test_bit(IS_INVREV, &dev->flags)) {
+                       DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
+                               "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
+                             invert_revert(dev->sbuf[i]));
+                       xoutb(i, REG_BUF_ADDR(iobase));
+                       xoutb(invert_revert(dev->sbuf[i]),
+                             REG_BUF_DATA(iobase));
+               } else {
+                       xoutb(i, REG_BUF_ADDR(iobase));
+                       xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
+               }
+       }
+       DEBUGP(4, dev, "Xmit done\n");
+
+       if (dev->proto == 0) {
+               /* T=0 proto: 0 byte reply  */
+               if (nr == 4) {
+                       DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
+                       xoutb(i, REG_BUF_ADDR(iobase));
+                       if (test_bit(IS_INVREV, &dev->flags))
+                               xoutb(0xff, REG_BUF_DATA(iobase));
+                       else
+                               xoutb(0x00, REG_BUF_DATA(iobase));
+               }
+
+               /* numSendBytes */
+               if (sendT0)
+                       nsend = nr;
+               else {
+                       if (nr == 4)
+                               nsend = 5;
+                       else {
+                               nsend = 5 + (unsigned char)dev->sbuf[4];
+                               if (dev->sbuf[4] == 0)
+                                       nsend += 0x100;
+                       }
+               }
+       } else
+               nsend = nr;
+
+       /* T0: output procedure byte */
+       if (test_bit(IS_INVREV, &dev->flags)) {
+               DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
+                      "0x%.2x\n", invert_revert(dev->sbuf[1]));
+               xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
+       } else {
+               DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
+               xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
+       }
+
+       DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
+              (unsigned char)(nsend & 0xff));
+       xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
+
+       DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
+              0x40     /* SM_Active */
+             | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
+             |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
+             |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
+       xoutb(0x40              /* SM_Active */
+             | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
+             |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
+             |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
+             REG_FLAGS0(iobase));
+
+       /* wait for xmit done */
+       if (dev->proto == 1) {
+               DEBUGP(4, dev, "Wait for xmit done\n");
+               for (i = 0; i < 1000; i++) {
+                       if (inb(REG_FLAGS0(iobase)) & 0x08)
+                               break;
+                       msleep_interruptible(10);
+               }
+               if (i == 1000) {
+                       DEBUGP(4, dev, "timeout waiting for xmit done\n");
+                       rc = -EIO;
+                       goto release_io;
+               }
+       }
+
+       /* T=1: wait for infoLen */
+
+       infolen = 0;
+       if (dev->proto) {
+               /* wait until infoLen is valid */
+               for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
+                       io_read_num_rec_bytes(iobase, &s);
+                       if (s >= 3) {
+                               infolen = inb(REG_FLAGS1(iobase));
+                               DEBUGP(4, dev, "infolen=%d\n", infolen);
+                               break;
+                       }
+                       msleep_interruptible(10);
+               }
+               if (i == 6000) {
+                       DEBUGP(4, dev, "timeout waiting for infoLen\n");
+                       rc = -EIO;
+                       goto release_io;
+               }
+       } else
+               clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
+
+       /* numRecBytes | bit9 of numRecytes */
+       io_read_num_rec_bytes(iobase, &dev->rlen);
+       for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
+               if (dev->proto) {
+                       if (dev->rlen >= infolen + 4)
+                               break;
+               }
+               msleep_interruptible(10);
+               /* numRecBytes | bit9 of numRecytes */
+               io_read_num_rec_bytes(iobase, &s);
+               if (s > dev->rlen) {
+                       DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
+                       i = 0;  /* reset timeout */
+                       dev->rlen = s;
+               }
+               /* T=0: we are done when numRecBytes doesn't
+                *      increment any more and NoProcedureByte
+                *      is set and numRecBytes == bytes sent + 6
+                *      (header bytes + data + 1 for sw2)
+                *      except when the card replies an error
+                *      which means, no data will be sent back.
+                */
+               else if (dev->proto == 0) {
+                       if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
+                               /* no procedure byte received since last read */
+                               DEBUGP(1, dev, "NoProcedure byte set\n");
+                               /* i=0; */
+                       } else {
+                               /* procedure byte received since last read */
+                               DEBUGP(1, dev, "NoProcedure byte unset "
+                                       "(reset timeout)\n");
+                               dev->procbyte = inb(REG_FLAGS1(iobase));
+                               DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
+                                     dev->procbyte);
+                               i = 0;  /* resettimeout */
+                       }
+                       if (inb(REG_FLAGS0(iobase)) & 0x08) {
+                               DEBUGP(1, dev, "T0Done flag (read reply)\n");
+                               break;
+                       }
+               }
+               if (dev->proto)
+                       infolen = inb(REG_FLAGS1(iobase));
+       }
+       if (i == 600) {
+               DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
+               rc = -EIO;
+               goto release_io;
+       } else {
+               if (dev->proto == 0) {
+                       DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
+                       for (i = 0; i < 1000; i++) {
+                               if (inb(REG_FLAGS0(iobase)) & 0x08)
+                                       break;
+                               msleep_interruptible(10);
+                       }
+                       if (i == 1000) {
+                               DEBUGP(1, dev, "timeout waiting for T0Done\n");
+                               rc = -EIO;
+                               goto release_io;
+                       }
+
+                       dev->procbyte = inb(REG_FLAGS1(iobase));
+                       DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
+                             dev->procbyte);
+
+                       io_read_num_rec_bytes(iobase, &dev->rlen);
+                       DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
+
+               }
+       }
+       /* T=1: read offset=zero, T=0: read offset=after challenge */
+       dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
+       DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
+             dev->rlen, dev->rpos, nr);
+
+release_io:
+       DEBUGP(4, dev, "Reset SM\n");
+       xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
+
+       if (rc < 0) {
+               DEBUGP(4, dev, "Write failed but clear T_Active\n");
+               dev->flags1 &= 0xdf;
+               xoutb(dev->flags1, REG_FLAGS1(iobase));
+       }
+
+       clear_bit(LOCK_IO, &dev->flags);
+       wake_up_interruptible(&dev->ioq);
+       wake_up_interruptible(&dev->readq);     /* tell read we have data */
+
+       /* ITSEC E2: clear write buffer */
+       memset((char *)dev->sbuf, 0, 512);
+
+       /* return error or actually written bytes */
+       DEBUGP(2, dev, "<- cmm_write\n");
+       return rc < 0 ? rc : nr;
+}
+
+static void start_monitor(struct cm4000_dev *dev)
+{
+       DEBUGP(3, dev, "-> start_monitor\n");
+       if (!dev->monitor_running) {
+               DEBUGP(5, dev, "create, init and add timer\n");
+               init_timer(&dev->timer);
+               dev->monitor_running = 1;
+               dev->timer.expires = jiffies;
+               dev->timer.data = (unsigned long) dev;
+               dev->timer.function = monitor_card;
+               add_timer(&dev->timer);
+       } else
+               DEBUGP(5, dev, "monitor already running\n");
+       DEBUGP(3, dev, "<- start_monitor\n");
+}
+
+static void stop_monitor(struct cm4000_dev *dev)
+{
+       DEBUGP(3, dev, "-> stop_monitor\n");
+       if (dev->monitor_running) {
+               DEBUGP(5, dev, "stopping monitor\n");
+               terminate_monitor(dev);
+               /* reset monitor SM */
+               clear_bit(IS_ATR_VALID, &dev->flags);
+               clear_bit(IS_ATR_PRESENT, &dev->flags);
+       } else
+               DEBUGP(5, dev, "monitor already stopped\n");
+       DEBUGP(3, dev, "<- stop_monitor\n");
+}
+
+static int cmm_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+                    unsigned long arg)
+{
+       struct cm4000_dev *dev = filp->private_data;
+       ioaddr_t iobase = dev->link.io.BasePort1;
+       dev_link_t *link;
+       int size;
+       int rc;
+#ifdef PCMCIA_DEBUG
+       char *ioctl_names[CM_IOC_MAXNR + 1] = {
+               [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
+               [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
+               [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
+               [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
+               [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
+       };
+#endif
+       DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
+              iminor(inode), ioctl_names[_IOC_NR(cmd)]);
+
+       link = dev_table[iminor(inode)];
+       if (!(DEV_OK(link))) {
+               DEBUGP(4, dev, "DEV_OK false\n");
+               return -ENODEV;
+       }
+
+       if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
+               DEBUGP(4, dev, "CMM_ABSENT flag set\n");
+               return -ENODEV;
+       }
+
+       if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
+               DEBUGP(4, dev, "ioctype mismatch\n");
+               return -EINVAL;
+       }
+       if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
+               DEBUGP(4, dev, "iocnr mismatch\n");
+               return -EINVAL;
+       }
+       size = _IOC_SIZE(cmd);
+       rc = 0;
+       DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
+             _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
+
+       if (_IOC_DIR(cmd) & _IOC_READ) {
+               if (!access_ok(VERIFY_WRITE, (void *)arg, size))
+                       return -EFAULT;
+       }
+       if (_IOC_DIR(cmd) & _IOC_WRITE) {
+               if (!access_ok(VERIFY_READ, (void *)arg, size))
+                       return -EFAULT;
+       }
+
+       switch (cmd) {
+       case CM_IOCGSTATUS:
+               DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
+               {
+                       int status;
+
+                       /* clear other bits, but leave inserted & powered as
+                        * they are */
+                       status = dev->flags0 & 3;
+                       if (test_bit(IS_ATR_PRESENT, &dev->flags))
+                               status |= CM_ATR_PRESENT;
+                       if (test_bit(IS_ATR_VALID, &dev->flags))
+                               status |= CM_ATR_VALID;
+                       if (test_bit(IS_CMM_ABSENT, &dev->flags))
+                               status |= CM_NO_READER;
+                       if (test_bit(IS_BAD_CARD, &dev->flags))
+                               status |= CM_BAD_CARD;
+                       if (copy_to_user((int *)arg, &status, sizeof(int)))
+                               return -EFAULT;
+               }
+               return 0;
+       case CM_IOCGATR:
+               DEBUGP(4, dev, "... in CM_IOCGATR\n");
+               {
+                       struct atreq *atreq = (struct atreq *) arg;
+                       int tmp;
+                       /* allow nonblocking io and being interrupted */
+                       if (wait_event_interruptible
+                           (dev->atrq,
+                            ((filp->f_flags & O_NONBLOCK)
+                             || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
+                                 != 0)))) {
+                               if (filp->f_flags & O_NONBLOCK)
+                                       return -EAGAIN;
+                               return -ERESTARTSYS;
+                       }
+
+                       if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
+                               tmp = -1;
+                               if (copy_to_user(&(atreq->atr_len), &tmp,
+                                                sizeof(int)))
+                                       return -EFAULT;
+                       } else {
+                               if (copy_to_user(atreq->atr, dev->atr,
+                                                dev->atr_len))
+                                       return -EFAULT;
+
+                               tmp = dev->atr_len;
+                               if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
+                                       return -EFAULT;
+                       }
+                       return 0;
+               }
+       case CM_IOCARDOFF:
+
+#ifdef PCMCIA_DEBUG
+               DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
+               if (dev->flags0 & 0x01) {
+                       DEBUGP(4, dev, "    Card inserted\n");
+               } else {
+                       DEBUGP(2, dev, "    No card inserted\n");
+               }
+               if (dev->flags0 & 0x02) {
+                       DEBUGP(4, dev, "    Card powered\n");
+               } else {
+                       DEBUGP(2, dev, "    Card not powered\n");
+               }
+#endif
+
+               /* is a card inserted and powered? */
+               if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
+
+                       /* get IO lock */
+                       if (wait_event_interruptible
+                           (dev->ioq,
+                            ((filp->f_flags & O_NONBLOCK)
+                             || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
+                                 == 0)))) {
+                               if (filp->f_flags & O_NONBLOCK)
+                                       return -EAGAIN;
+                               return -ERESTARTSYS;
+                       }
+                       /* Set Flags0 = 0x42 */
+                       DEBUGP(4, dev, "Set Flags0=0x42 \n");
+                       xoutb(0x42, REG_FLAGS0(iobase));
+                       clear_bit(IS_ATR_PRESENT, &dev->flags);
+                       clear_bit(IS_ATR_VALID, &dev->flags);
+                       dev->mstate = M_CARDOFF;
+                       clear_bit(LOCK_IO, &dev->flags);
+                       if (wait_event_interruptible
+                           (dev->atrq,
+                            ((filp->f_flags & O_NONBLOCK)
+                             || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
+                                 0)))) {
+                               if (filp->f_flags & O_NONBLOCK)
+                                       return -EAGAIN;
+                               return -ERESTARTSYS;
+                       }
+               }
+               /* release lock */
+               clear_bit(LOCK_IO, &dev->flags);
+               wake_up_interruptible(&dev->ioq);
+
+               return 0;
+       case CM_IOCSPTS:
+               {
+                       struct ptsreq krnptsreq;
+
+                       if (copy_from_user(&krnptsreq, (struct ptsreq *) arg,
+                                          sizeof(struct ptsreq)))
+                               return -EFAULT;
+
+                       rc = 0;
+                       DEBUGP(4, dev, "... in CM_IOCSPTS\n");
+                       /* wait for ATR to get valid */
+                       if (wait_event_interruptible
+                           (dev->atrq,
+                            ((filp->f_flags & O_NONBLOCK)
+                             || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
+                                 != 0)))) {
+                               if (filp->f_flags & O_NONBLOCK)
+                                       return -EAGAIN;
+                               return -ERESTARTSYS;
+                       }
+                       /* get IO lock */
+                       if (wait_event_interruptible
+                           (dev->ioq,
+                            ((filp->f_flags & O_NONBLOCK)
+                             || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
+                                 == 0)))) {
+                               if (filp->f_flags & O_NONBLOCK)
+                                       return -EAGAIN;
+                               return -ERESTARTSYS;
+                       }
+
+                       if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
+                               /* auto power_on again */
+                               dev->mstate = M_FETCH_ATR;
+                               clear_bit(IS_ATR_VALID, &dev->flags);
+                       }
+                       /* release lock */
+                       clear_bit(LOCK_IO, &dev->flags);
+                       wake_up_interruptible(&dev->ioq);
+
+               }
+               return rc;
+#ifdef PCMCIA_DEBUG
+       case CM_IOSDBGLVL:      /* set debug log level */
+               {
+                       int old_pc_debug = 0;
+
+                       old_pc_debug = pc_debug;
+                       if (copy_from_user(&pc_debug, (int *)arg, sizeof(int)))
+                               return -EFAULT;
+
+                       if (old_pc_debug != pc_debug)
+                               DEBUGP(0, dev, "Changed debug log level "
+                                      "to %i\n", pc_debug);
+               }
+               return rc;
+#endif
+       default:
+               DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
+               return -EINVAL;
+       }
+}
+
+static int cmm_open(struct inode *inode, struct file *filp)
+{
+       struct cm4000_dev *dev;
+       dev_link_t *link;
+       int rc, minor = iminor(inode);
+
+       if (minor >= CM4000_MAX_DEV)
+               return -ENODEV;
+
+       link = dev_table[minor];
+       if (link == NULL || !(DEV_OK(link)))
+               return -ENODEV;
+
+       if (link->open)
+               return -EBUSY;
+
+       dev = link->priv;
+       filp->private_data = dev;
+
+       DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
+             imajor(inode), minor, current->comm, current->pid);
+
+       /* init device variables, they may be "polluted" after close
+        * or, the device may never have been closed (i.e. open failed)
+        */
+
+       ZERO_DEV(dev);
+
+       /* opening will always block since the
+        * monitor will be started by open, which
+        * means we have to wait for ATR becoming
+        * vaild = block until valid (or card
+        * inserted)
+        */
+       if (filp->f_flags & O_NONBLOCK)
+               return -EAGAIN;
+
+       dev->mdelay = T_50MSEC;
+
+       /* start monitoring the cardstatus */
+       start_monitor(dev);
+
+       link->open = 1;         /* only one open per device */
+       rc = 0;
+
+       DEBUGP(2, dev, "<- cmm_open\n");
+       return nonseekable_open(inode, filp);
+}
+
+static int cmm_close(struct inode *inode, struct file *filp)
+{
+       struct cm4000_dev *dev;
+       dev_link_t *link;
+       int minor = iminor(inode);
+
+       if (minor >= CM4000_MAX_DEV)
+               return -ENODEV;
+
+       link = dev_table[minor];
+       if (link == NULL)
+               return -ENODEV;
+
+       dev = link->priv;
+
+       DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
+              imajor(inode), minor);
+
+       stop_monitor(dev);
+
+       ZERO_DEV(dev);
+
+       link->open = 0;         /* only one open per device */
+       wake_up(&dev->devq);    /* socket removed? */
+
+       DEBUGP(2, dev, "cmm_close\n");
+       return 0;
+}
+
+static void cmm_cm4000_release(dev_link_t * link)
+{
+       struct cm4000_dev *dev = link->priv;
+
+       /* dont terminate the monitor, rather rely on
+        * close doing that for us.
+        */
+       DEBUGP(3, dev, "-> cmm_cm4000_release\n");
+       while (link->open) {
+               printk(KERN_INFO MODULE_NAME ": delaying release until "
+                      "process has terminated\n");
+               /* note: don't interrupt us:
+                * close the applications which own
+                * the devices _first_ !
+                */
+               wait_event(dev->devq, (link->open == 0));
+       }
+       /* dev->devq=NULL;      this cannot be zeroed earlier */
+       DEBUGP(3, dev, "<- cmm_cm4000_release\n");
+       return;
+}
+
+/*==== Interface to PCMCIA Layer =======================================*/
+
+static void cm4000_config(dev_link_t * link, int devno)
+{
+       client_handle_t handle = link->handle;
+       struct cm4000_dev *dev;
+       tuple_t tuple;
+       cisparse_t parse;
+       config_info_t conf;
+       u_char buf[64];
+       int fail_fn, fail_rc;
+       int rc;
+
+       /* read the config-tuples */
+       tuple.DesiredTuple = CISTPL_CONFIG;
+       tuple.Attributes = 0;
+       tuple.TupleData = buf;
+       tuple.TupleDataMax = sizeof(buf);
+       tuple.TupleOffset = 0;
+
+       if ((fail_rc = pcmcia_get_first_tuple(handle, &tuple)) != CS_SUCCESS) {
+               fail_fn = GetFirstTuple;
+               goto cs_failed;
+       }
+       if ((fail_rc = pcmcia_get_tuple_data(handle, &tuple)) != CS_SUCCESS) {
+               fail_fn = GetTupleData;
+               goto cs_failed;
+       }
+       if ((fail_rc =
+            pcmcia_parse_tuple(handle, &tuple, &parse)) != CS_SUCCESS) {
+               fail_fn = ParseTuple;
+               goto cs_failed;
+       }
+       if ((fail_rc =
+            pcmcia_get_configuration_info(handle, &conf)) != CS_SUCCESS) {
+               fail_fn = GetConfigurationInfo;
+               goto cs_failed;
+       }
+
+       link->state |= DEV_CONFIG;
+       link->conf.ConfigBase = parse.config.base;
+       link->conf.Present = parse.config.rmask[0];
+       link->conf.Vcc = conf.Vcc;
+
+       link->io.BasePort2 = 0;
+       link->io.NumPorts2 = 0;
+       link->io.Attributes2 = 0;
+       tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+       for (rc = pcmcia_get_first_tuple(handle, &tuple);
+            rc == CS_SUCCESS; rc = pcmcia_get_next_tuple(handle, &tuple)) {
+
+               rc = pcmcia_get_tuple_data(handle, &tuple);
+               if (rc != CS_SUCCESS)
+                       continue;
+               rc = pcmcia_parse_tuple(handle, &tuple, &parse);
+               if (rc != CS_SUCCESS)
+                       continue;
+
+               link->conf.ConfigIndex = parse.cftable_entry.index;
+
+               if (!parse.cftable_entry.io.nwin)
+                       continue;
+
+               /* Get the IOaddr */
+               link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
+               link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
+               link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+               if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
+                       link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+               if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
+                       link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+               link->io.IOAddrLines = parse.cftable_entry.io.flags
+                   & CISTPL_IO_LINES_MASK;
+
+               rc = pcmcia_request_io(handle, &link->io);
+               if (rc == CS_SUCCESS)
+                       break;  /* we are done */
+       }
+       if (rc != CS_SUCCESS)
+               goto cs_release;
+
+       link->conf.IntType = 00000002;
+
+       if ((fail_rc =
+            pcmcia_request_configuration(handle, &link->conf)) != CS_SUCCESS) {
+               fail_fn = RequestConfiguration;
+               goto cs_release;
+       }
+
+       dev = link->priv;
+       sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
+       dev->node.major = major;
+       dev->node.minor = devno;
+       dev->node.next = NULL;
+       link->dev = &dev->node;
+       link->state &= ~DEV_CONFIG_PENDING;
+
+       return;
+
+cs_failed:
+       cs_error(handle, fail_fn, fail_rc);
+cs_release:
+       cm4000_release(link);
+
+       link->state &= ~DEV_CONFIG_PENDING;
+}
+
+static int cm4000_event(event_t event, int priority,
+                       event_callback_args_t *args)
+{
+       dev_link_t *link;
+       struct cm4000_dev *dev;
+       int devno;
+
+       link = args->client_data;
+       dev = link->priv;
+
+       DEBUGP(3, dev, "-> cm4000_event\n");
+       for (devno = 0; devno < CM4000_MAX_DEV; devno++)
+               if (dev_table[devno] == link)
+                       break;
+
+       if (devno == CM4000_MAX_DEV)
+               return CS_BAD_ADAPTER;
+
+       switch (event) {
+       case CS_EVENT_CARD_INSERTION:
+               DEBUGP(5, dev, "CS_EVENT_CARD_INSERTION\n");
+               link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+               cm4000_config(link, devno);
+               break;
+       case CS_EVENT_CARD_REMOVAL:
+               DEBUGP(5, dev, "CS_EVENT_CARD_REMOVAL\n");
+               link->state &= ~DEV_PRESENT;
+               stop_monitor(dev);
+               break;
+       case CS_EVENT_PM_SUSPEND:
+               DEBUGP(5, dev, "CS_EVENT_PM_SUSPEND "
+                     "(fall-through to CS_EVENT_RESET_PHYSICAL)\n");
+               link->state |= DEV_SUSPEND;
+               /* fall-through */
+       case CS_EVENT_RESET_PHYSICAL:
+               DEBUGP(5, dev, "CS_EVENT_RESET_PHYSICAL\n");
+               if (link->state & DEV_CONFIG) {
+                       DEBUGP(5, dev, "ReleaseConfiguration\n");
+                       pcmcia_release_configuration(link->handle);
+               }
+               stop_monitor(dev);
+               break;
+       case CS_EVENT_PM_RESUME:
+               DEBUGP(5, dev, "CS_EVENT_PM_RESUME "
+                     "(fall-through to CS_EVENT_CARD_RESET)\n");
+               link->state &= ~DEV_SUSPEND;
+               /* fall-through */
+       case CS_EVENT_CARD_RESET:
+               DEBUGP(5, dev, "CS_EVENT_CARD_RESET\n");
+               if ((link->state & DEV_CONFIG)) {
+                       DEBUGP(5, dev, "RequestConfiguration\n");
+                       pcmcia_request_configuration(link->handle, &link->conf);
+               }
+               if (link->open)
+                       start_monitor(dev);
+               break;
+       default:
+               DEBUGP(5, dev, "unknown event %.2x\n", event);
+               break;
+       }
+       DEBUGP(3, dev, "<- cm4000_event\n");
+       return CS_SUCCESS;
+}
+
+static void cm4000_release(dev_link_t *link)
+{
+       cmm_cm4000_release(link->priv); /* delay release until device closed */
+       pcmcia_release_configuration(link->handle);
+       pcmcia_release_io(link->handle, &link->io);
+}
+
+static dev_link_t *cm4000_attach(void)
+{
+       struct cm4000_dev *dev;
+       dev_link_t *link;
+       client_reg_t client_reg;
+       int i;
+
+       for (i = 0; i < CM4000_MAX_DEV; i++)
+               if (dev_table[i] == NULL)
+                       break;
+
+       if (i == CM4000_MAX_DEV) {
+               printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
+               return NULL;
+       }
+
+       /* create a new cm4000_cs device */
+       dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
+       if (dev == NULL)
+               return NULL;
+
+       link = &dev->link;
+       link->priv = dev;
+       link->conf.IntType = INT_MEMORY_AND_IO;
+       dev_table[i] = link;
+
+       /* register with card services */
+       client_reg.dev_info = &dev_info;
+       client_reg.EventMask =
+           CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+           CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+           CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+       client_reg.Version = 0x0210;
+       client_reg.event_callback_args.client_data = link;
+
+       i = pcmcia_register_client(&link->handle, &client_reg);
+       if (i) {
+               cs_error(link->handle, RegisterClient, i);
+               cm4000_detach(link);
+               return NULL;
+       }
+
+       init_waitqueue_head(&dev->devq);
+       init_waitqueue_head(&dev->ioq);
+       init_waitqueue_head(&dev->atrq);
+       init_waitqueue_head(&dev->readq);
+
+       return link;
+}
+
+static void cm4000_detach_by_devno(int devno, dev_link_t * link)
+{
+       struct cm4000_dev *dev = link->priv;
+
+       DEBUGP(3, dev, "-> detach_by_devno(devno=%d)\n", devno);
+
+       if (link->state & DEV_CONFIG) {
+               DEBUGP(5, dev, "device still configured (try to release it)\n");
+               cm4000_release(link);
+       }
+
+       if (link->handle) {
+               pcmcia_deregister_client(link->handle);
+       }
+
+       dev_table[devno] = NULL;
+       kfree(dev);
+       return;
+}
+
+static void cm4000_detach(dev_link_t * link)
+{
+       int i;
+
+       /* find device */
+       for (i = 0; i < CM4000_MAX_DEV; i++)
+               if (dev_table[i] == link)
+                       break;
+
+       if (i == CM4000_MAX_DEV)
+               return;
+
+       cm4000_detach_by_devno(i, link);
+       return;
+}
+
+static struct file_operations cm4000_fops = {
+       .owner  = THIS_MODULE,
+       .read   = cmm_read,
+       .write  = cmm_write,
+       .ioctl  = cmm_ioctl,
+       .open   = cmm_open,
+       .release= cmm_close,
+};
+
+static struct pcmcia_device_id cm4000_ids[] = {
+       PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
+       PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
+       PCMCIA_DEVICE_NULL,
+};
+MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
+
+static struct pcmcia_driver cm4000_driver = {
+       .owner    = THIS_MODULE,
+       .drv      = {
+               .name = "cm4000_cs",
+               },
+       .attach   = cm4000_attach,
+       .detach   = cm4000_detach,
+       .event    = cm4000_event,
+       .id_table = cm4000_ids,
+};
+
+static int __init cmm_init(void)
+{
+       printk(KERN_INFO "%s\n", version);
+       pcmcia_register_driver(&cm4000_driver);
+       major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
+       if (major < 0) {
+               printk(KERN_WARNING MODULE_NAME
+                       ": could not get major number\n");
+               return -1;
+       }
+
+       return 0;
+}
+
+static void __exit cmm_exit(void)
+{
+       int i;
+
+       printk(KERN_INFO MODULE_NAME ": unloading\n");
+       pcmcia_unregister_driver(&cm4000_driver);
+       for (i = 0; i < CM4000_MAX_DEV; i++)
+               if (dev_table[i])
+                       cm4000_detach_by_devno(i, dev_table[i]);
+       unregister_chrdev(major, DEVICE_NAME);
+};
+
+module_init(cmm_init);
+module_exit(cmm_exit);
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/include/linux/cm4000_cs.h b/include/linux/cm4000_cs.h
new file mode 100644 (file)
index 0000000..605ebe2
--- /dev/null
@@ -0,0 +1,66 @@
+#ifndef        _CM4000_H_
+#define        _CM4000_H_
+
+#define        MAX_ATR                 33
+
+#define        CM4000_MAX_DEV          4
+
+/* those two structures are passed via ioctl() from/to userspace.  They are
+ * used by existing userspace programs, so I kepth the awkward "bIFSD" naming
+ * not to break compilation of userspace apps. -HW */
+
+typedef struct atreq {
+       int32_t atr_len;
+       unsigned char atr[64];
+       int32_t power_act;
+       unsigned char bIFSD;
+       unsigned char bIFSC;
+} atreq_t;
+
+
+/* what is particularly stupid in the original driver is the arch-dependant
+ * member sizes. This leads to CONFIG_COMPAT breakage, since 32bit userspace
+ * will lay out the structure members differently than the 64bit kernel.
+ *
+ * I've changed "ptsreq.protocol" from "unsigned long" to "u_int32_t".
+ * On 32bit this will make no difference.  With 64bit kernels, it will make
+ * 32bit apps work, too.
+ */
+
+typedef struct ptsreq {
+       u_int32_t protocol; /*T=0: 2^0, T=1:  2^1*/
+       unsigned char flags;
+       unsigned char pts1;
+       unsigned char pts2;
+       unsigned char pts3;
+} ptsreq_t;
+
+#define        CM_IOC_MAGIC            'c'
+#define        CM_IOC_MAXNR            255
+
+#define        CM_IOCGSTATUS           _IOR (CM_IOC_MAGIC, 0, unsigned char *)
+#define        CM_IOCGATR              _IOWR(CM_IOC_MAGIC, 1, atreq_t *)
+#define        CM_IOCSPTS              _IOW (CM_IOC_MAGIC, 2, ptsreq_t *)
+#define        CM_IOCSRDR              _IO  (CM_IOC_MAGIC, 3)
+#define CM_IOCARDOFF            _IO  (CM_IOC_MAGIC, 4)
+
+#define CM_IOSDBGLVL            _IOW(CM_IOC_MAGIC, 250, int*)
+
+/* card and device states */
+#define        CM_CARD_INSERTED                0x01
+#define        CM_CARD_POWERED                 0x02
+#define        CM_ATR_PRESENT                  0x04
+#define        CM_ATR_VALID                    0x08
+#define        CM_STATE_VALID                  0x0f
+/* extra info only from CM4000 */
+#define        CM_NO_READER                    0x10
+#define        CM_BAD_CARD                     0x20
+
+
+#ifdef __KERNEL__
+
+#define        DEVICE_NAME             "cmm"
+#define        MODULE_NAME             "cm4000_cs"
+
+#endif /* __KERNEL__ */
+#endif /* _CM4000_H_ */