Commit 77c44ab1 authored by Harald Welte's avatar Harald Welte Committed by Linus Torvalds

[PATCH] New Omnikey Cardman 4040 driver

Add new Omnikey Cardman 4040 smartcard reader driver
Signed-off-by: default avatarHarald Welte <laforge@gnumonks.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent bca73e4b
......@@ -1873,6 +1873,11 @@ L: linux-tr@linuxtr.net
W: http://www.linuxtr.net
S: Maintained
OMNIKEY CARDMAN 4040 DRIVER
P: Harald Welte
M: laforge@gnumonks.org
S: Maintained
ONSTREAM SCSI TAPE DRIVER
P: Willem Riede
M: osst@riede.org
......
......@@ -18,5 +18,18 @@ config SYNCLINK_CS
The module will be called synclinkmp. If you want to do that, say M
here.
config CARDMAN_4040
tristate "Omnikey CardMan 4040 support"
depends on PCMCIA
help
Enable support for the Omnikey CardMan 4040 PCMCIA Smartcard
reader.
This card is basically a USB CCID device connected to a FIFO
in I/O space. To use the kernel driver, you will need either the
PC/SC ifdhandler provided from the Omnikey homepage
(http://www.omnikey.com/), or a current development version of OpenCT
(http://www.opensc.org/).
endmenu
......@@ -5,3 +5,4 @@
#
obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o
obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o
/*
* A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
*
* (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
*
* (C) 2005 Harald Welte <laforge@gnumonks.org>
* - add support for poll()
* - driver cleanup
* - add waitqueues
* - adhere to linux kernel coding style and policies
* - support 2.6.13 "new style" pcmcia interface
*
* The device basically is a USB CCID compliant device that has been
* attached to an I/O-Mapped FIFO.
*
* All rights reserved, Dual BSD/GPL Licensed.
*/
/* #define PCMCIA_DEBUG 6 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/poll.h>
#include <linux/wait.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ciscode.h>
#include <pcmcia/ds.h>
#include "cm4040_cs.h"
#ifdef PCMCIA_DEBUG
#define reader_to_dev(x) (&handle_to_dev(x->link.handle))
static int pc_debug = PCMCIA_DEBUG;
module_param(pc_debug, int, 0600);
#define DEBUGP(n, rdr, x, args...) do { \
if (pc_debug >= (n)) \
dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \
__FUNCTION__ , ##args); \
} while (0)
#else
#define DEBUGP(n, rdr, x, args...)
#endif
static char *version =
"OMNIKEY CardMan 4040 v1.1.0gm4 - All bugs added by Harald Welte";
#define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
#define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
#define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
#define READ_WRITE_BUFFER_SIZE 512
#define POLL_LOOP_COUNT 1000
/* how often to poll for fifo status change */
#define POLL_PERIOD msecs_to_jiffies(10)
static void reader_release(dev_link_t *link);
static void reader_detach(dev_link_t *link);
static int major;
#define BS_READABLE 0x01
#define BS_WRITABLE 0x02
struct reader_dev {
dev_link_t link;
dev_node_t node;
wait_queue_head_t devq;
wait_queue_head_t poll_wait;
wait_queue_head_t read_wait;
wait_queue_head_t write_wait;
unsigned long buffer_status;
unsigned long timeout;
unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
struct timer_list poll_timer;
};
static dev_info_t dev_info = MODULE_NAME;
static dev_link_t *dev_table[CM_MAX_DEV];
#ifndef PCMCIA_DEBUG
#define xoutb outb
#define xinb inb
#else
static inline void xoutb(unsigned char val, unsigned short port)
{
if (pc_debug >= 7)
printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
outb(val, port);
}
static inline unsigned char xinb(unsigned short port)
{
unsigned char val;
val = inb(port);
if (pc_debug >= 7)
printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
return val;
}
#endif
/* poll the device fifo status register. not to be confused with
* the poll syscall. */
static void cm4040_do_poll(unsigned long dummy)
{
struct reader_dev *dev = (struct reader_dev *) dummy;
unsigned int obs = xinb(dev->link.io.BasePort1
+ REG_OFFSET_BUFFER_STATUS);
if ((obs & BSR_BULK_IN_FULL)) {
set_bit(BS_READABLE, &dev->buffer_status);
DEBUGP(4, dev, "waking up read_wait\n");
wake_up_interruptible(&dev->read_wait);
} else
clear_bit(BS_READABLE, &dev->buffer_status);
if (!(obs & BSR_BULK_OUT_FULL)) {
set_bit(BS_WRITABLE, &dev->buffer_status);
DEBUGP(4, dev, "waking up write_wait\n");
wake_up_interruptible(&dev->write_wait);
} else
clear_bit(BS_WRITABLE, &dev->buffer_status);
if (dev->buffer_status)
wake_up_interruptible(&dev->poll_wait);
mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
}
static void cm4040_stop_poll(struct reader_dev *dev)
{
del_timer_sync(&dev->poll_timer);
}
static int wait_for_bulk_out_ready(struct reader_dev *dev)
{
int i, rc;
int iobase = dev->link.io.BasePort1;
for (i = 0; i < POLL_LOOP_COUNT; i++) {
if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
& BSR_BULK_OUT_FULL) == 0) {
DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
return 1;
}
}
DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
dev->timeout);
rc = wait_event_interruptible_timeout(dev->write_wait,
test_and_clear_bit(BS_WRITABLE,
&dev->buffer_status),
dev->timeout);
if (rc > 0)
DEBUGP(4, dev, "woke up: BulkOut empty\n");
else if (rc == 0)
DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
else if (rc < 0)
DEBUGP(4, dev, "woke up: signal arrived\n");
return rc;
}
/* Write to Sync Control Register */
static int write_sync_reg(unsigned char val, struct reader_dev *dev)
{
int iobase = dev->link.io.BasePort1;
int rc;
rc = wait_for_bulk_out_ready(dev);
if (rc <= 0)
return rc;
xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
rc = wait_for_bulk_out_ready(dev);
if (rc <= 0)
return rc;
return 1;
}
static int wait_for_bulk_in_ready(struct reader_dev *dev)
{
int i, rc;
int iobase = dev->link.io.BasePort1;
for (i = 0; i < POLL_LOOP_COUNT; i++) {
if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
& BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
return 1;
}
}
DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
dev->timeout);
rc = wait_event_interruptible_timeout(dev->read_wait,
test_and_clear_bit(BS_READABLE,
&dev->buffer_status),
dev->timeout);
if (rc > 0)
DEBUGP(4, dev, "woke up: BulkIn full\n");
else if (rc == 0)
DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
else if (rc < 0)
DEBUGP(4, dev, "woke up: signal arrived\n");
return rc;
}
static ssize_t cm4040_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
struct reader_dev *dev = filp->private_data;
int iobase = dev->link.io.BasePort1;
size_t bytes_to_read;
unsigned long i;
size_t min_bytes_to_read;
int rc;
unsigned char uc;
DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
if (count == 0)
return 0;
if (count < 10)
return -EFAULT;
if (filp->f_flags & O_NONBLOCK) {
DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
DEBUGP(2, dev, "<- cm4040_read (failure)\n");
return -EAGAIN;
}
if ((dev->link.state & DEV_PRESENT)==0)
return -ENODEV;
for (i = 0; i < 5; i++) {
rc = wait_for_bulk_in_ready(dev);
if (rc <= 0) {
DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
DEBUGP(2, dev, "<- cm4040_read (failed)\n");
if (rc == -ERESTARTSYS)
return rc;
return -EIO;
}
dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
#ifdef PCMCIA_DEBUG
if (pc_debug >= 6)
printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
}
printk("\n");
#else
}
#endif
bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
min_bytes_to_read = min(count, bytes_to_read + 5);
DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
for (i = 0; i < (min_bytes_to_read-5); i++) {
rc = wait_for_bulk_in_ready(dev);
if (rc <= 0) {
DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
DEBUGP(2, dev, "<- cm4040_read (failed)\n");
if (rc == -ERESTARTSYS)
return rc;
return -EIO;
}
dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
#ifdef PCMCIA_DEBUG
if (pc_debug >= 6)
printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
}
printk("\n");
#else
}
#endif
*ppos = min_bytes_to_read;
if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
return -EFAULT;
rc = wait_for_bulk_in_ready(dev);
if (rc <= 0) {
DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
DEBUGP(2, dev, "<- cm4040_read (failed)\n");
if (rc == -ERESTARTSYS)
return rc;
return -EIO;
}
rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
if (rc <= 0) {
DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
DEBUGP(2, dev, "<- cm4040_read (failed)\n");
if (rc == -ERESTARTSYS)
return rc;
else
return -EIO;
}
uc = xinb(iobase + REG_OFFSET_BULK_IN);
DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
return min_bytes_to_read;
}
static ssize_t cm4040_write(struct file *filp, const char __user *buf,
size_t count, loff_t *ppos)
{
struct reader_dev *dev = filp->private_data;
int iobase = dev->link.io.BasePort1;
ssize_t rc;
int i;
unsigned int bytes_to_write;
DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
if (count == 0) {
DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
return 0;
}
if (count < 5) {
DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
return -EIO;
}
if (filp->f_flags & O_NONBLOCK) {
DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
DEBUGP(4, dev, "<- cm4040_write (failure)\n");
return -EAGAIN;
}
if ((dev->link.state & DEV_PRESENT) == 0)
return -ENODEV;
bytes_to_write = count;
if (copy_from_user(dev->s_buf, buf, bytes_to_write))
return -EFAULT;
switch (dev->s_buf[0]) {
case CMD_PC_TO_RDR_XFRBLOCK:
case CMD_PC_TO_RDR_SECURE:
case CMD_PC_TO_RDR_TEST_SECURE:
case CMD_PC_TO_RDR_OK_SECURE:
dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
break;
case CMD_PC_TO_RDR_ICCPOWERON:
dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
break;
case CMD_PC_TO_RDR_GETSLOTSTATUS:
case CMD_PC_TO_RDR_ICCPOWEROFF:
case CMD_PC_TO_RDR_GETPARAMETERS:
case CMD_PC_TO_RDR_RESETPARAMETERS:
case CMD_PC_TO_RDR_SETPARAMETERS:
case CMD_PC_TO_RDR_ESCAPE:
case CMD_PC_TO_RDR_ICCCLOCK:
default:
dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
break;
}
rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
if (rc <= 0) {
DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
DEBUGP(2, dev, "<- cm4040_write (failed)\n");
if (rc == -ERESTARTSYS)
return rc;
else
return -EIO;
}
DEBUGP(4, dev, "start \n");
for (i = 0; i < bytes_to_write; i++) {
rc = wait_for_bulk_out_ready(dev);
if (rc <= 0) {
DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
rc);
DEBUGP(2, dev, "<- cm4040_write (failed)\n");
if (rc == -ERESTARTSYS)
return rc;
else
return -EIO;
}
xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
}
DEBUGP(4, dev, "end\n");
rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
if (rc <= 0) {
DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
DEBUGP(2, dev, "<- cm4040_write (failed)\n");
if (rc == -ERESTARTSYS)
return rc;
else
return -EIO;
}
DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
return count;
}
static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
{
struct reader_dev *dev = filp->private_data;
unsigned int mask = 0;
poll_wait(filp, &dev->poll_wait, wait);
if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
mask |= POLLIN | POLLRDNORM;
if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
mask |= POLLOUT | POLLWRNORM;
DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
return mask;
}
static int cm4040_open(struct inode *inode, struct file *filp)
{
struct reader_dev *dev;
dev_link_t *link;
int minor = iminor(inode);
if (minor >= CM_MAX_DEV)
return -ENODEV;
link = dev_table[minor];
if (link == NULL || !(DEV_OK(link)))
return -ENODEV;
if (link->open)
return -EBUSY;
dev = link->priv;
filp->private_data = dev;
if (filp->f_flags & O_NONBLOCK) {
DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
return -EAGAIN;
}
link->open = 1;
dev->poll_timer.data = (unsigned long) dev;
mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
return nonseekable_open(inode, filp);
}
static int cm4040_close(struct inode *inode, struct file *filp)
{
struct reader_dev *dev = filp->private_data;
dev_link_t *link;
int minor = iminor(inode);
DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
iminor(inode));
if (minor >= CM_MAX_DEV)
return -ENODEV;
link = dev_table[minor];
if (link == NULL)
return -ENODEV;
cm4040_stop_poll(dev);
link->open = 0;
wake_up(&dev->devq);
DEBUGP(2, dev, "<- cm4040_close\n");
return 0;
}
static void cm4040_reader_release(dev_link_t *link)
{
struct reader_dev *dev = link->priv;
DEBUGP(3, dev, "-> cm4040_reader_release\n");
while (link->open) {
DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release "
"until process has terminated\n");
wait_event(dev->devq, (link->open == 0));
}
DEBUGP(3, dev, "<- cm4040_reader_release\n");
return;
}
static void reader_config(dev_link_t *link, int devno)
{
client_handle_t handle;
struct reader_dev *dev;
tuple_t tuple;
cisparse_t parse;
config_info_t conf;
u_char buf[64];
int fail_fn, fail_rc;
int rc;
handle = link->handle;
tuple.DesiredTuple = CISTPL_CONFIG;
tuple.Attributes = 0;
tuple.TupleData = buf;
tuple.TupleDataMax = sizeof(buf);
tuple.TupleOffset = 0;
if ((fail_rc = pcmcia_get_first_tuple(handle, &tuple)) != CS_SUCCESS) {
fail_fn = GetFirstTuple;
goto cs_failed;
}
if ((fail_rc = pcmcia_get_tuple_data(handle, &tuple)) != CS_SUCCESS) {
fail_fn = GetTupleData;
goto cs_failed;
}
if ((fail_rc = pcmcia_parse_tuple(handle, &tuple, &parse))
!= CS_SUCCESS) {
fail_fn = ParseTuple;
goto cs_failed;
}
if ((fail_rc = pcmcia_get_configuration_info(handle, &conf))
!= CS_SUCCESS) {
fail_fn = GetConfigurationInfo;
goto cs_failed;
}
link->state |= DEV_CONFIG;
link->conf.ConfigBase = parse.config.base;
link->conf.Present = parse.config.rmask[0];
link->conf.Vcc = conf.Vcc;
link->io.BasePort2 = 0;
link->io.NumPorts2 = 0;
link->io.Attributes2 = 0;
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
for (rc = pcmcia_get_first_tuple(handle, &tuple);
rc == CS_SUCCESS;
rc = pcmcia_get_next_tuple(handle, &tuple)) {
rc = pcmcia_get_tuple_data(handle, &tuple);
if (rc != CS_SUCCESS)
continue;
rc = pcmcia_parse_tuple(handle, &tuple, &parse);
if (rc != CS_SUCCESS)
continue;
link->conf.ConfigIndex = parse.cftable_entry.index;
if (!parse.cftable_entry.io.nwin)
continue;