forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1908 lines
48 KiB
1908 lines
48 KiB
/* |
|
* A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000" |
|
* |
|
* cm4000_cs.c [email protected] |
|
* |
|
* 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) 2005-2006 Harald Welte <[email protected]> |
|
* - Adhere to Kernel process/coding-style.rst |
|
* - Port to 2.6.13 "new" style PCMCIA |
|
* - Check for copy_{from,to}_user return values |
|
* - Use nonseekable_open() |
|
* - add class interface for udev device creation |
|
* |
|
* All rights reserved. Licensed under dual BSD/GPL license. |
|
*/ |
|
|
|
#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 <linux/bitrev.h> |
|
#include <linux/mutex.h> |
|
#include <linux/uaccess.h> |
|
#include <linux/io.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 */ |
|
|
|
#define reader_to_dev(x) (&x->p_dev->dev) |
|
|
|
/* n (debug level) is ignored */ |
|
/* additional debug output may be enabled by re-compiling with |
|
* CM4000_DEBUG set */ |
|
/* #define CM4000_DEBUG */ |
|
#define DEBUGP(n, rdr, x, args...) do { \ |
|
dev_dbg(reader_to_dev(rdr), "%s:" x, \ |
|
__func__ , ## args); \ |
|
} while (0) |
|
|
|
static DEFINE_MUTEX(cmm_mutex); |
|
|
|
#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_release(struct pcmcia_device *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 { |
|
struct pcmcia_device *p_dev; |
|
|
|
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) - \ |
|
offsetof(struct cm4000_dev, atr_csum)) |
|
|
|
static struct pcmcia_device *dev_table[CM4000_MAX_DEV]; |
|
static struct class *cmm_class; |
|
|
|
/* This table doesn't use spaces after the comma between fields and thus |
|
* violates process/coding-style.rst. 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 CM4000_DEBUG |
|
#define xoutb outb |
|
#define xinb inb |
|
#else |
|
static inline void xoutb(unsigned char val, unsigned short port) |
|
{ |
|
pr_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); |
|
pr_debug("%.2x=inb(%.4x)\n", val, port); |
|
|
|
return val; |
|
} |
|
#endif |
|
|
|
static inline unsigned char invert_revert(unsigned char ch) |
|
{ |
|
return bitrev8(~ch); |
|
} |
|
|
|
static void str_invert_revert(unsigned char *b, int len) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < len; i++) |
|
b[i] = invert_revert(b[i]); |
|
} |
|
|
|
#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(unsigned int 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; |
|
unsigned int iobase = dev->p_dev->resource[0]->start; |
|
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; |
|
unsigned int iobase = dev->p_dev->resource[0]->start; |
|
|
|
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 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; |
|
} |
|
usleep_range(10000, 11000); |
|
} |
|
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; |
|
} |
|
usleep_range(10000, 11000); |
|
} |
|
|
|
/* 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 explicitly from the application: the driver |
|
* is already doing that for you. |
|
*/ |
|
|
|
static void monitor_card(struct timer_list *t) |
|
{ |
|
struct cm4000_dev *dev = from_timer(dev, t, timer); |
|
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) { |
|
case M_CARDOFF: { |
|
unsigned char flags0; |
|
|
|
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"); |
|
timer_setup(&dev->timer, monitor_card, 0); |
|
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 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; |
|
} |
|
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 = stream_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) |
|
{ |
|
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; |
|
|
|
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");
|
|
|