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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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1924 lines
48 KiB
C
1924 lines
48 KiB
C
/*
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* A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000"
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*
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* cm4000_cs.c support.linux@omnikey.com
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*
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* Tue Oct 23 11:32:43 GMT 2001 herp - cleaned up header files
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* Sun Jan 20 10:11:15 MET 2002 herp - added modversion header files
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* Thu Nov 14 16:34:11 GMT 2002 mh - added PPS functionality
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* Tue Nov 19 16:36:27 GMT 2002 mh - added SUSPEND/RESUME functionailty
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* Wed Jul 28 12:55:01 CEST 2004 mh - kernel 2.6 adjustments
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*
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* current version: 2.4.0gm4
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*
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* (C) 2000,2001,2002,2003,2004 Omnikey AG
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*
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* (C) 2005-2006 Harald Welte <laforge@gnumonks.org>
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* - Adhere to Kernel CodingStyle
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* - Port to 2.6.13 "new" style PCMCIA
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* - Check for copy_{from,to}_user return values
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* - Use nonseekable_open()
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* - add class interface for udev device creation
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*
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* All rights reserved. Licensed under dual BSD/GPL license.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/fs.h>
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#include <linux/delay.h>
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#include <linux/bitrev.h>
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#include <linux/mutex.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ciscode.h>
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#include <pcmcia/ds.h>
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#include <linux/cm4000_cs.h>
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/* #define ATR_CSUM */
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#define reader_to_dev(x) (&x->p_dev->dev)
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/* n (debug level) is ignored */
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/* additional debug output may be enabled by re-compiling with
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* CM4000_DEBUG set */
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/* #define CM4000_DEBUG */
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#define DEBUGP(n, rdr, x, args...) do { \
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dev_dbg(reader_to_dev(rdr), "%s:" x, \
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__func__ , ## args); \
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} while (0)
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static DEFINE_MUTEX(cmm_mutex);
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#define T_1SEC (HZ)
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#define T_10MSEC msecs_to_jiffies(10)
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#define T_20MSEC msecs_to_jiffies(20)
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#define T_40MSEC msecs_to_jiffies(40)
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#define T_50MSEC msecs_to_jiffies(50)
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#define T_100MSEC msecs_to_jiffies(100)
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#define T_500MSEC msecs_to_jiffies(500)
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static void cm4000_release(struct pcmcia_device *link);
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static int major; /* major number we get from the kernel */
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/* note: the first state has to have number 0 always */
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#define M_FETCH_ATR 0
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#define M_TIMEOUT_WAIT 1
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#define M_READ_ATR_LEN 2
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#define M_READ_ATR 3
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#define M_ATR_PRESENT 4
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#define M_BAD_CARD 5
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#define M_CARDOFF 6
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#define LOCK_IO 0
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#define LOCK_MONITOR 1
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#define IS_AUTOPPS_ACT 6
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#define IS_PROCBYTE_PRESENT 7
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#define IS_INVREV 8
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#define IS_ANY_T0 9
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#define IS_ANY_T1 10
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#define IS_ATR_PRESENT 11
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#define IS_ATR_VALID 12
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#define IS_CMM_ABSENT 13
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#define IS_BAD_LENGTH 14
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#define IS_BAD_CSUM 15
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#define IS_BAD_CARD 16
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#define REG_FLAGS0(x) (x + 0)
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#define REG_FLAGS1(x) (x + 1)
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#define REG_NUM_BYTES(x) (x + 2)
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#define REG_BUF_ADDR(x) (x + 3)
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#define REG_BUF_DATA(x) (x + 4)
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#define REG_NUM_SEND(x) (x + 5)
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#define REG_BAUDRATE(x) (x + 6)
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#define REG_STOPBITS(x) (x + 7)
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struct cm4000_dev {
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struct pcmcia_device *p_dev;
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unsigned char atr[MAX_ATR];
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unsigned char rbuf[512];
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unsigned char sbuf[512];
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wait_queue_head_t devq; /* when removing cardman must not be
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zeroed! */
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wait_queue_head_t ioq; /* if IO is locked, wait on this Q */
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wait_queue_head_t atrq; /* wait for ATR valid */
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wait_queue_head_t readq; /* used by write to wake blk.read */
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/* warning: do not move this fields.
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* initialising to zero depends on it - see ZERO_DEV below. */
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unsigned char atr_csum;
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unsigned char atr_len_retry;
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unsigned short atr_len;
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unsigned short rlen; /* bytes avail. after write */
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unsigned short rpos; /* latest read pos. write zeroes */
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unsigned char procbyte; /* T=0 procedure byte */
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unsigned char mstate; /* state of card monitor */
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unsigned char cwarn; /* slow down warning */
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unsigned char flags0; /* cardman IO-flags 0 */
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unsigned char flags1; /* cardman IO-flags 1 */
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unsigned int mdelay; /* variable monitor speeds, in jiffies */
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unsigned int baudv; /* baud value for speed */
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unsigned char ta1;
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unsigned char proto; /* T=0, T=1, ... */
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unsigned long flags; /* lock+flags (MONITOR,IO,ATR) * for concurrent
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access */
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unsigned char pts[4];
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struct timer_list timer; /* used to keep monitor running */
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int monitor_running;
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};
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#define ZERO_DEV(dev) \
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memset(&dev->atr_csum,0, \
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sizeof(struct cm4000_dev) - \
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offsetof(struct cm4000_dev, atr_csum))
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static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
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static struct class *cmm_class;
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/* This table doesn't use spaces after the comma between fields and thus
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* violates CodingStyle. However, I don't really think wrapping it around will
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* make it any clearer to read -HW */
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static unsigned char fi_di_table[10][14] = {
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/*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */
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/*DI */
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/* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
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/* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
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/* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
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/* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
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/* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
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/* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
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/* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
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/* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
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/* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
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/* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
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};
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#ifndef CM4000_DEBUG
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#define xoutb outb
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#define xinb inb
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#else
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static inline void xoutb(unsigned char val, unsigned short port)
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{
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pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
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outb(val, port);
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}
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static inline unsigned char xinb(unsigned short port)
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{
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unsigned char val;
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val = inb(port);
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pr_debug("%.2x=inb(%.4x)\n", val, port);
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return val;
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}
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#endif
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static inline unsigned char invert_revert(unsigned char ch)
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{
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return bitrev8(~ch);
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}
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static void str_invert_revert(unsigned char *b, int len)
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{
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int i;
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for (i = 0; i < len; i++)
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b[i] = invert_revert(b[i]);
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}
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#define ATRLENCK(dev,pos) \
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if (pos>=dev->atr_len || pos>=MAX_ATR) \
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goto return_0;
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static unsigned int calc_baudv(unsigned char fidi)
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{
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unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
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fi_rfu = 372;
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di_rfu = 1;
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/* FI */
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switch ((fidi >> 4) & 0x0F) {
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case 0x00:
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wcrcf = 372;
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break;
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case 0x01:
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wcrcf = 372;
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break;
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case 0x02:
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wcrcf = 558;
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break;
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case 0x03:
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wcrcf = 744;
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break;
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case 0x04:
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wcrcf = 1116;
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break;
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case 0x05:
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wcrcf = 1488;
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break;
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case 0x06:
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wcrcf = 1860;
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break;
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case 0x07:
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wcrcf = fi_rfu;
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break;
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case 0x08:
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wcrcf = fi_rfu;
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break;
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case 0x09:
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wcrcf = 512;
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break;
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case 0x0A:
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wcrcf = 768;
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break;
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case 0x0B:
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wcrcf = 1024;
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break;
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case 0x0C:
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wcrcf = 1536;
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break;
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case 0x0D:
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wcrcf = 2048;
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break;
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default:
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wcrcf = fi_rfu;
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break;
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}
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/* DI */
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switch (fidi & 0x0F) {
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case 0x00:
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wbrcf = di_rfu;
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break;
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case 0x01:
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wbrcf = 1;
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break;
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case 0x02:
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wbrcf = 2;
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break;
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case 0x03:
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wbrcf = 4;
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break;
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case 0x04:
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wbrcf = 8;
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break;
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case 0x05:
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wbrcf = 16;
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break;
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case 0x06:
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wbrcf = 32;
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break;
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case 0x07:
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wbrcf = di_rfu;
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break;
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case 0x08:
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wbrcf = 12;
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break;
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case 0x09:
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wbrcf = 20;
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break;
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default:
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wbrcf = di_rfu;
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break;
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}
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return (wcrcf / wbrcf);
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}
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static unsigned short io_read_num_rec_bytes(unsigned int iobase,
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unsigned short *s)
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{
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unsigned short tmp;
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tmp = *s = 0;
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do {
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*s = tmp;
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tmp = inb(REG_NUM_BYTES(iobase)) |
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(inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
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} while (tmp != *s);
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return *s;
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}
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static int parse_atr(struct cm4000_dev *dev)
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{
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unsigned char any_t1, any_t0;
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unsigned char ch, ifno;
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int ix, done;
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DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
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if (dev->atr_len < 3) {
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DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
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return 0;
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}
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if (dev->atr[0] == 0x3f)
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set_bit(IS_INVREV, &dev->flags);
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else
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clear_bit(IS_INVREV, &dev->flags);
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ix = 1;
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ifno = 1;
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ch = dev->atr[1];
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dev->proto = 0; /* XXX PROTO */
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any_t1 = any_t0 = done = 0;
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dev->ta1 = 0x11; /* defaults to 9600 baud */
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do {
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if (ifno == 1 && (ch & 0x10)) {
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/* read first interface byte and TA1 is present */
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dev->ta1 = dev->atr[2];
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DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
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ifno++;
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} else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
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dev->ta1 = 0x11;
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ifno++;
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}
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DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
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ix += ((ch & 0x10) >> 4) /* no of int.face chars */
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+((ch & 0x20) >> 5)
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+ ((ch & 0x40) >> 6)
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+ ((ch & 0x80) >> 7);
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/* ATRLENCK(dev,ix); */
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if (ch & 0x80) { /* TDi */
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ch = dev->atr[ix];
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if ((ch & 0x0f)) {
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any_t1 = 1;
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DEBUGP(5, dev, "card is capable of T=1\n");
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} else {
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any_t0 = 1;
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DEBUGP(5, dev, "card is capable of T=0\n");
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}
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} else
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done = 1;
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} while (!done);
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DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
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ix, dev->atr[1] & 15, any_t1);
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if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
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DEBUGP(5, dev, "length error\n");
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return 0;
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}
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if (any_t0)
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set_bit(IS_ANY_T0, &dev->flags);
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if (any_t1) { /* compute csum */
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dev->atr_csum = 0;
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#ifdef ATR_CSUM
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for (i = 1; i < dev->atr_len; i++)
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dev->atr_csum ^= dev->atr[i];
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if (dev->atr_csum) {
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set_bit(IS_BAD_CSUM, &dev->flags);
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DEBUGP(5, dev, "bad checksum\n");
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goto return_0;
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}
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#endif
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if (any_t0 == 0)
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dev->proto = 1; /* XXX PROTO */
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set_bit(IS_ANY_T1, &dev->flags);
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}
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return 1;
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}
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struct card_fixup {
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char atr[12];
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u_int8_t atr_len;
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u_int8_t stopbits;
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};
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static struct card_fixup card_fixups[] = {
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{ /* ACOS */
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.atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
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.atr_len = 7,
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.stopbits = 0x03,
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},
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{ /* Motorola */
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.atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
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0x41, 0x81, 0x81 },
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.atr_len = 11,
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.stopbits = 0x04,
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},
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};
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static void set_cardparameter(struct cm4000_dev *dev)
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{
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int i;
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unsigned int iobase = dev->p_dev->resource[0]->start;
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u_int8_t stopbits = 0x02; /* ISO default */
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DEBUGP(3, dev, "-> set_cardparameter\n");
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dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
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xoutb(dev->flags1, REG_FLAGS1(iobase));
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DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
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/* set baudrate */
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xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
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DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
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((dev->baudv - 1) & 0xFF));
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/* set stopbits */
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for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
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if (!memcmp(dev->atr, card_fixups[i].atr,
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card_fixups[i].atr_len))
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stopbits = card_fixups[i].stopbits;
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}
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xoutb(stopbits, REG_STOPBITS(iobase));
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|
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DEBUGP(3, dev, "<- set_cardparameter\n");
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}
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|
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static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
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{
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|
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unsigned long tmp, i;
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unsigned short num_bytes_read;
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unsigned char pts_reply[4];
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ssize_t rc;
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unsigned int iobase = dev->p_dev->resource[0]->start;
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rc = 0;
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|
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DEBUGP(3, dev, "-> set_protocol\n");
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DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
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"ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
|
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"ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
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(unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
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ptsreq->pts3);
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|
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/* Fill PTS structure */
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dev->pts[0] = 0xff;
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dev->pts[1] = 0x00;
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tmp = ptsreq->protocol;
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while ((tmp = (tmp >> 1)) > 0)
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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 CM4000_DEBUG
|
|
pr_debug("0x%.2x ", dev->pts[i]);
|
|
}
|
|
pr_debug("\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 CM4000_DEBUG
|
|
DEBUGP(2, dev, "PTSreply: ");
|
|
for (i = 0; i < num_bytes_read; i++) {
|
|
pr_debug("0x%.2x ", pts_reply[i]);
|
|
}
|
|
pr_debug("\n");
|
|
#endif /* CM4000_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(unsigned int 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 CM4000_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;
|
|
unsigned int iobase = dev->p_dev->resource[0]->start;
|
|
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 doesn't 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 = (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);
|
|
dev_warn(&dev->p_dev->dev, MODULE_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 CM4000_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");
|
|
mod_timer(&dev->timer, jiffies + dev->mdelay);
|
|
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;
|
|
unsigned int iobase = dev->p_dev->resource[0]->start;
|
|
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 (!pcmcia_dev_present(dev->p_dev) || /* device 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;
|
|
} else {
|
|
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 && i) {
|
|
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)) {
|
|
rc = -ENODEV;
|
|
goto release_io;
|
|
}
|
|
|
|
if (test_bit(IS_INVREV, &dev->flags) && count > 0)
|
|
str_invert_revert(dev->rbuf, count);
|
|
|
|
if (copy_to_user(buf, dev->rbuf, count))
|
|
rc = -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 = filp->private_data;
|
|
unsigned int iobase = dev->p_dev->resource[0]->start;
|
|
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 (!pcmcia_dev_present(dev->p_dev) || /* device 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 call to 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");
|
|
setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
|
|
dev->monitor_running = 1;
|
|
mod_timer(&dev->timer, jiffies);
|
|
} 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 long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct cm4000_dev *dev = filp->private_data;
|
|
unsigned int iobase = dev->p_dev->resource[0]->start;
|
|
struct inode *inode = file_inode(filp);
|
|
struct pcmcia_device *link;
|
|
int size;
|
|
int rc;
|
|
void __user *argp = (void __user *)arg;
|
|
#ifdef CM4000_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",
|
|
};
|
|
DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
|
|
iminor(inode), ioctl_names[_IOC_NR(cmd)]);
|
|
#endif
|
|
|
|
mutex_lock(&cmm_mutex);
|
|
rc = -ENODEV;
|
|
link = dev_table[iminor(inode)];
|
|
if (!pcmcia_dev_present(link)) {
|
|
DEBUGP(4, dev, "DEV_OK false\n");
|
|
goto out;
|
|
}
|
|
|
|
if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
|
|
DEBUGP(4, dev, "CMM_ABSENT flag set\n");
|
|
goto out;
|
|
}
|
|
rc = -EINVAL;
|
|
|
|
if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
|
|
DEBUGP(4, dev, "ioctype mismatch\n");
|
|
goto out;
|
|
}
|
|
if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
|
|
DEBUGP(4, dev, "iocnr mismatch\n");
|
|
goto out;
|
|
}
|
|
size = _IOC_SIZE(cmd);
|
|
rc = -EFAULT;
|
|
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, argp, size))
|
|
goto out;
|
|
}
|
|
if (_IOC_DIR(cmd) & _IOC_WRITE) {
|
|
if (!access_ok(VERIFY_READ, argp, size))
|
|
goto out;
|
|
}
|
|
rc = 0;
|
|
|
|
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(argp, &status, sizeof(int)))
|
|
rc = -EFAULT;
|
|
}
|
|
break;
|
|
case CM_IOCGATR:
|
|
DEBUGP(4, dev, "... in CM_IOCGATR\n");
|
|
{
|
|
struct atreq __user *atreq = argp;
|
|
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)
|
|
rc = -EAGAIN;
|
|
else
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
|
|
rc = -EFAULT;
|
|
if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
|
|
tmp = -1;
|
|
if (copy_to_user(&(atreq->atr_len), &tmp,
|
|
sizeof(int)))
|
|
break;
|
|
} else {
|
|
if (copy_to_user(atreq->atr, dev->atr,
|
|
dev->atr_len))
|
|
break;
|
|
|
|
tmp = dev->atr_len;
|
|
if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
|
|
break;
|
|
}
|
|
rc = 0;
|
|
break;
|
|
}
|
|
case CM_IOCARDOFF:
|
|
|
|
#ifdef CM4000_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)
|
|
rc = -EAGAIN;
|
|
else
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
/* 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)
|
|
rc = -EAGAIN;
|
|
else
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
}
|
|
/* release lock */
|
|
clear_bit(LOCK_IO, &dev->flags);
|
|
wake_up_interruptible(&dev->ioq);
|
|
|
|
rc = 0;
|
|
break;
|
|
case CM_IOCSPTS:
|
|
{
|
|
struct ptsreq krnptsreq;
|
|
|
|
if (copy_from_user(&krnptsreq, argp,
|
|
sizeof(struct ptsreq))) {
|
|
rc = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
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)
|
|
rc = -EAGAIN;
|
|
else
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
/* 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)
|
|
rc = -EAGAIN;
|
|
else
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
|
|
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);
|
|
|
|
}
|
|
break;
|
|
#ifdef CM4000_DEBUG
|
|
case CM_IOSDBGLVL:
|
|
rc = -ENOTTY;
|
|
break;
|
|
#endif
|
|
default:
|
|
DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
|
|
rc = -ENOTTY;
|
|
}
|
|
out:
|
|
mutex_unlock(&cmm_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static int cmm_open(struct inode *inode, struct file *filp)
|
|
{
|
|
struct cm4000_dev *dev;
|
|
struct pcmcia_device *link;
|
|
int minor = iminor(inode);
|
|
int ret;
|
|
|
|
if (minor >= CM4000_MAX_DEV)
|
|
return -ENODEV;
|
|
|
|
mutex_lock(&cmm_mutex);
|
|
link = dev_table[minor];
|
|
if (link == NULL || !pcmcia_dev_present(link)) {
|
|
ret = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
if (link->open) {
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
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
|
|
* valid = block until valid (or card
|
|
* inserted)
|
|
*/
|
|
if (filp->f_flags & O_NONBLOCK) {
|
|
ret = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
dev->mdelay = T_50MSEC;
|
|
|
|
/* start monitoring the cardstatus */
|
|
start_monitor(dev);
|
|
|
|
link->open = 1; /* only one open per device */
|
|
|
|
DEBUGP(2, dev, "<- cmm_open\n");
|
|
ret = nonseekable_open(inode, filp);
|
|
out:
|
|
mutex_unlock(&cmm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int cmm_close(struct inode *inode, struct file *filp)
|
|
{
|
|
struct cm4000_dev *dev;
|
|
struct pcmcia_device *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(struct pcmcia_device * 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 int cm4000_config_check(struct pcmcia_device *p_dev, void *priv_data)
|
|
{
|
|
return pcmcia_request_io(p_dev);
|
|
}
|
|
|
|
static int cm4000_config(struct pcmcia_device * link, int devno)
|
|
{
|
|
struct cm4000_dev *dev;
|
|
|
|
link->config_flags |= CONF_AUTO_SET_IO;
|
|
|
|
/* read the config-tuples */
|
|
if (pcmcia_loop_config(link, cm4000_config_check, NULL))
|
|
goto cs_release;
|
|
|
|
if (pcmcia_enable_device(link))
|
|
goto cs_release;
|
|
|
|
dev = link->priv;
|
|
|
|
return 0;
|
|
|
|
cs_release:
|
|
cm4000_release(link);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int cm4000_suspend(struct pcmcia_device *link)
|
|
{
|
|
struct cm4000_dev *dev;
|
|
|
|
dev = link->priv;
|
|
stop_monitor(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cm4000_resume(struct pcmcia_device *link)
|
|
{
|
|
struct cm4000_dev *dev;
|
|
|
|
dev = link->priv;
|
|
if (link->open)
|
|
start_monitor(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void cm4000_release(struct pcmcia_device *link)
|
|
{
|
|
cmm_cm4000_release(link); /* delay release until device closed */
|
|
pcmcia_disable_device(link);
|
|
}
|
|
|
|
static int cm4000_probe(struct pcmcia_device *link)
|
|
{
|
|
struct cm4000_dev *dev;
|
|
int i, ret;
|
|
|
|
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 -ENODEV;
|
|
}
|
|
|
|
/* create a new cm4000_cs device */
|
|
dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
|
|
if (dev == NULL)
|
|
return -ENOMEM;
|
|
|
|
dev->p_dev = link;
|
|
link->priv = dev;
|
|
dev_table[i] = link;
|
|
|
|
init_waitqueue_head(&dev->devq);
|
|
init_waitqueue_head(&dev->ioq);
|
|
init_waitqueue_head(&dev->atrq);
|
|
init_waitqueue_head(&dev->readq);
|
|
|
|
ret = cm4000_config(link, i);
|
|
if (ret) {
|
|
dev_table[i] = NULL;
|
|
kfree(dev);
|
|
return ret;
|
|
}
|
|
|
|
device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void cm4000_detach(struct pcmcia_device *link)
|
|
{
|
|
struct cm4000_dev *dev = link->priv;
|
|
int devno;
|
|
|
|
/* find device */
|
|
for (devno = 0; devno < CM4000_MAX_DEV; devno++)
|
|
if (dev_table[devno] == link)
|
|
break;
|
|
if (devno == CM4000_MAX_DEV)
|
|
return;
|
|
|
|
stop_monitor(dev);
|
|
|
|
cm4000_release(link);
|
|
|
|
dev_table[devno] = NULL;
|
|
kfree(dev);
|
|
|
|
device_destroy(cmm_class, MKDEV(major, devno));
|
|
|
|
return;
|
|
}
|
|
|
|
static const struct file_operations cm4000_fops = {
|
|
.owner = THIS_MODULE,
|
|
.read = cmm_read,
|
|
.write = cmm_write,
|
|
.unlocked_ioctl = cmm_ioctl,
|
|
.open = cmm_open,
|
|
.release= cmm_close,
|
|
.llseek = no_llseek,
|
|
};
|
|
|
|
static const 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,
|
|
.name = "cm4000_cs",
|
|
.probe = cm4000_probe,
|
|
.remove = cm4000_detach,
|
|
.suspend = cm4000_suspend,
|
|
.resume = cm4000_resume,
|
|
.id_table = cm4000_ids,
|
|
};
|
|
|
|
static int __init cmm_init(void)
|
|
{
|
|
int rc;
|
|
|
|
cmm_class = class_create(THIS_MODULE, "cardman_4000");
|
|
if (IS_ERR(cmm_class))
|
|
return PTR_ERR(cmm_class);
|
|
|
|
major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
|
|
if (major < 0) {
|
|
printk(KERN_WARNING MODULE_NAME
|
|
": could not get major number\n");
|
|
class_destroy(cmm_class);
|
|
return major;
|
|
}
|
|
|
|
rc = pcmcia_register_driver(&cm4000_driver);
|
|
if (rc < 0) {
|
|
unregister_chrdev(major, DEVICE_NAME);
|
|
class_destroy(cmm_class);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit cmm_exit(void)
|
|
{
|
|
pcmcia_unregister_driver(&cm4000_driver);
|
|
unregister_chrdev(major, DEVICE_NAME);
|
|
class_destroy(cmm_class);
|
|
};
|
|
|
|
module_init(cmm_init);
|
|
module_exit(cmm_exit);
|
|
MODULE_LICENSE("Dual BSD/GPL");
|