[deliverable/linux.git] / drivers / char / pcmcia / cm4040_cs.c

/*
 * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
 *
 * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
 *
 * (C) 2005-2006 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
 * 	- add class interface for udev device creation
 *
 * 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->p_dev))
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, 	\
			   __func__ , ##args); 			\
	} while (0)
#else
#define DEBUGP(n, rdr, x, args...)
#endif

static char *version =
"OMNIKEY CardMan 4040 v1.1.0gm5 - 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(struct pcmcia_device *link);

static int major;
static struct class *cmx_class;

#define		BS_READABLE	0x01
#define		BS_WRITABLE	0x02

struct reader_dev {
	struct pcmcia_device	*p_dev;
	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 struct pcmcia_device *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->p_dev->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->p_dev->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->p_dev->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->p_dev->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->p_dev->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 (!pcmcia_dev_present(dev->p_dev))
		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);
	min_bytes_to_read = min_t(size_t, min_bytes_to_read, READ_WRITE_BUFFER_SIZE);

	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->p_dev->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) || (count > READ_WRITE_BUFFER_SIZE)) {
		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 (!pcmcia_dev_present(dev->p_dev))
		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;
	struct pcmcia_device *link;
	int minor = iminor(inode);

	if (minor >= CM_MAX_DEV)
		return -ENODEV;

	link = dev_table[minor];
	if (link == NULL || !pcmcia_dev_present(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;
	struct pcmcia_device *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(struct pcmcia_device *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 int reader_config(struct pcmcia_device *link, int devno)
{
	struct reader_dev *dev;
	tuple_t tuple;
	cisparse_t parse;
	u_char buf[64];
	int fail_fn, fail_rc;
	int rc;

	tuple.Attributes = 0;
	tuple.TupleData = buf;
	tuple.TupleDataMax = sizeof(buf);
 	tuple.TupleOffset = 0;

	link->io.BasePort2 = 0;
	link->io.NumPorts2 = 0;
	link->io.Attributes2 = 0;
	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
	for (rc = pcmcia_get_first_tuple(link, &tuple);
	     rc == CS_SUCCESS;
	     rc = pcmcia_get_next_tuple(link, &tuple)) {
		rc = pcmcia_get_tuple_data(link, &tuple);
		if (rc != CS_SUCCESS)
			continue;
		rc = pcmcia_parse_tuple(link, &tuple, &parse);
		if (rc != CS_SUCCESS)
			continue;

		link->conf.ConfigIndex = parse.cftable_entry.index;

		if (!parse.cftable_entry.io.nwin)
			continue;

		link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
		link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
		link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
		if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
			link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
		if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
			link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
		link->io.IOAddrLines = parse.cftable_entry.io.flags
						& CISTPL_IO_LINES_MASK;
		rc = pcmcia_request_io(link, &link->io);

		dev_printk(KERN_INFO, &handle_to_dev(link), "foo");
		if (rc == CS_SUCCESS)
			break;
		else
			dev_printk(KERN_INFO, &handle_to_dev(link),
				   "pcmcia_request_io failed 0x%x\n", rc);
	}
	if (rc != CS_SUCCESS)
		goto cs_release;

	link->conf.IntType = 00000002;

	if ((fail_rc = pcmcia_request_configuration(link,&link->conf))
								!=CS_SUCCESS) {
		fail_fn = RequestConfiguration;
		dev_printk(KERN_INFO, &handle_to_dev(link),
			   "pcmcia_request_configuration failed 0x%x\n",
			   fail_rc);
		goto cs_release;
	}

	dev = link->priv;
	sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
	dev->node.major = major;
	dev->node.minor = devno;
	dev->node.next = &dev->node;

	DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
	      link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
	DEBUGP(2, dev, "<- reader_config (succ)\n");

	return 0;

cs_release:
	reader_release(link);
	return -ENODEV;
}

static void reader_release(struct pcmcia_device *link)
{
	cm4040_reader_release(link);
	pcmcia_disable_device(link);
}

static int reader_probe(struct pcmcia_device *link)
{
	struct reader_dev *dev;
	int i, ret;

	for (i = 0; i < CM_MAX_DEV; i++) {
		if (dev_table[i] == NULL)
			break;
	}

	if (i == CM_MAX_DEV)
		return -ENODEV;

	dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
	if (dev == NULL)
		return -ENOMEM;

	dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
	dev->buffer_status = 0;

	link->priv = dev;
	dev->p_dev = link;

	link->conf.IntType = INT_MEMORY_AND_IO;
	dev_table[i] = link;

	init_waitqueue_head(&dev->devq);
	init_waitqueue_head(&dev->poll_wait);
	init_waitqueue_head(&dev->read_wait);
	init_waitqueue_head(&dev->write_wait);
	setup_timer(&dev->poll_timer, cm4040_do_poll, 0);

	ret = reader_config(link, i);
	if (ret) {
		dev_table[i] = NULL;
		kfree(dev);
		return ret;
	}

	device_create(cmx_class, NULL, MKDEV(major, i), "cmx%d", i);

	return 0;
}

static void reader_detach(struct pcmcia_device *link)
{
	struct reader_dev *dev = link->priv;
	int devno;

	/* find device */
	for (devno = 0; devno < CM_MAX_DEV; devno++) {
		if (dev_table[devno] == link)
			break;
	}
	if (devno == CM_MAX_DEV)
		return;

	reader_release(link);

	dev_table[devno] = NULL;
	kfree(dev);

	device_destroy(cmx_class, MKDEV(major, devno));

	return;
}

static const struct file_operations reader_fops = {
	.owner		= THIS_MODULE,
	.read		= cm4040_read,
	.write		= cm4040_write,
	.open		= cm4040_open,
	.release	= cm4040_close,
	.poll		= cm4040_poll,
};

static struct pcmcia_device_id cm4040_ids[] = {
	PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
	PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
				0xE32CDD8C, 0x8F23318B),
	PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);

static struct pcmcia_driver reader_driver = {
  	.owner		= THIS_MODULE,
  	.drv		= {
		.name	= "cm4040_cs",
	},
	.probe		= reader_probe,
	.remove		= reader_detach,
	.id_table	= cm4040_ids,
};

static int __init cm4040_init(void)
{
	int rc;

	printk(KERN_INFO "%s\n", version);
	cmx_class = class_create(THIS_MODULE, "cardman_4040");
	if (IS_ERR(cmx_class))
		return PTR_ERR(cmx_class);

	major = register_chrdev(0, DEVICE_NAME, &reader_fops);
	if (major < 0) {
		printk(KERN_WARNING MODULE_NAME
			": could not get major number\n");
		class_destroy(cmx_class);
		return major;
	}

	rc = pcmcia_register_driver(&reader_driver);
	if (rc < 0) {
		unregister_chrdev(major, DEVICE_NAME);
		class_destroy(cmx_class);
		return rc;
	}

	return 0;
}

static void __exit cm4040_exit(void)
{
	printk(KERN_INFO MODULE_NAME ": unloading\n");
	pcmcia_unregister_driver(&reader_driver);
	unregister_chrdev(major, DEVICE_NAME);
	class_destroy(cmx_class);
}

module_init(cm4040_init);
module_exit(cm4040_exit);
MODULE_LICENSE("Dual BSD/GPL");
Commit	Line	Data
77c44ab1 HW	1	/*
	2	* A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
	3	*
	4	* (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
	5	*
67bc6200	6	* (C) 2005-2006 Harald Welte <laforge@gnumonks.org>
77c44ab1 HW	7	* - add support for poll()
	8	* - driver cleanup
	9	* - add waitqueues
	10	* - adhere to linux kernel coding style and policies
	11	* - support 2.6.13 "new style" pcmcia interface
67bc6200	12	* - add class interface for udev device creation
77c44ab1 HW	13	*
	14	* The device basically is a USB CCID compliant device that has been
	15	* attached to an I/O-Mapped FIFO.
	16	*
	17	* All rights reserved, Dual BSD/GPL Licensed.
	18	*/
	19
	20	/* #define PCMCIA_DEBUG 6 */
	21
	22	#include <linux/kernel.h>
	23	#include <linux/module.h>
	24	#include <linux/slab.h>
	25	#include <linux/init.h>
	26	#include <linux/fs.h>
	27	#include <linux/delay.h>
	28	#include <linux/poll.h>
	29	#include <linux/wait.h>
	30	#include <asm/uaccess.h>
	31	#include <asm/io.h>
	32
	33	#include <pcmcia/cs_types.h>
	34	#include <pcmcia/cs.h>
	35	#include <pcmcia/cistpl.h>
	36	#include <pcmcia/cisreg.h>
	37	#include <pcmcia/ciscode.h>
	38	#include <pcmcia/ds.h>
	39
	40	#include "cm4040_cs.h"
	41
	42
	43	#ifdef PCMCIA_DEBUG
ddd73611	44	#define reader_to_dev(x) (&handle_to_dev(x->p_dev))
77c44ab1 HW	45	static int pc_debug = PCMCIA_DEBUG;
	46	module_param(pc_debug, int, 0600);
	47	#define DEBUGP(n, rdr, x, args...) do { \
	48	if (pc_debug >= (n)) \
	49	dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \
bf9d8929	50	__func__ , ##args); \
77c44ab1 HW	51	} while (0)
	52	#else
	53	#define DEBUGP(n, rdr, x, args...)
	54	#endif
	55
	56	static char *version =
67bc6200	57	"OMNIKEY CardMan 4040 v1.1.0gm5 - All bugs added by Harald Welte";
77c44ab1 HW	58
	59	#define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
	60	#define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
	61	#define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
	62	#define READ_WRITE_BUFFER_SIZE 512
	63	#define POLL_LOOP_COUNT 1000
	64
	65	/* how often to poll for fifo status change */
	66	#define POLL_PERIOD msecs_to_jiffies(10)
	67
fba395ee	68	static void reader_release(struct pcmcia_device *link);
77c44ab1 HW	69
77c44ab1 HW	70	static int major;
67bc6200	71	static struct class *cmx_class;
77c44ab1 HW	72
	73	#define BS_READABLE 0x01
	74	#define BS_WRITABLE 0x02
	75
	76	struct reader_dev {
fd238232	77	struct pcmcia_device *p_dev;
77c44ab1 HW	78	dev_node_t node;
	79	wait_queue_head_t devq;
	80	wait_queue_head_t poll_wait;
	81	wait_queue_head_t read_wait;
	82	wait_queue_head_t write_wait;
	83	unsigned long buffer_status;
	84	unsigned long timeout;
	85	unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
	86	unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
	87	struct timer_list poll_timer;
	88	};
	89
fba395ee	90	static struct pcmcia_device *dev_table[CM_MAX_DEV];
77c44ab1 HW	91
	92	#ifndef PCMCIA_DEBUG
	93	#define xoutb outb
	94	#define xinb inb
	95	#else
	96	static inline void xoutb(unsigned char val, unsigned short port)
	97	{
	98	if (pc_debug >= 7)
	99	printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
	100	outb(val, port);
	101	}
	102
	103	static inline unsigned char xinb(unsigned short port)
	104	{
	105	unsigned char val;
	106
	107	val = inb(port);
	108	if (pc_debug >= 7)
	109	printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
	110	return val;
	111	}
	112	#endif
	113
	114	/* poll the device fifo status register. not to be confused with
	115	* the poll syscall. */
	116	static void cm4040_do_poll(unsigned long dummy)
	117	{
	118	struct reader_dev dev = (struct reader_dev ) dummy;
fd238232	119	unsigned int obs = xinb(dev->p_dev->io.BasePort1
77c44ab1 HW	120	+ REG_OFFSET_BUFFER_STATUS);
	121
	122	if ((obs & BSR_BULK_IN_FULL)) {
	123	set_bit(BS_READABLE, &dev->buffer_status);
	124	DEBUGP(4, dev, "waking up read_wait\n");
	125	wake_up_interruptible(&dev->read_wait);
	126	} else
	127	clear_bit(BS_READABLE, &dev->buffer_status);
	128
	129	if (!(obs & BSR_BULK_OUT_FULL)) {
	130	set_bit(BS_WRITABLE, &dev->buffer_status);
	131	DEBUGP(4, dev, "waking up write_wait\n");
	132	wake_up_interruptible(&dev->write_wait);
	133	} else
	134	clear_bit(BS_WRITABLE, &dev->buffer_status);
	135
	136	if (dev->buffer_status)
	137	wake_up_interruptible(&dev->poll_wait);
	138
	139	mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
	140	}
	141
	142	static void cm4040_stop_poll(struct reader_dev *dev)
	143	{
	144	del_timer_sync(&dev->poll_timer);
	145	}
	146
	147	static int wait_for_bulk_out_ready(struct reader_dev *dev)
	148	{
	149	int i, rc;
fd238232	150	int iobase = dev->p_dev->io.BasePort1;
77c44ab1 HW	151
	152	for (i = 0; i < POLL_LOOP_COUNT; i++) {
	153	if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
	154	& BSR_BULK_OUT_FULL) == 0) {
	155	DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
	156	return 1;
	157	}
	158	}
	159
	160	DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
	161	dev->timeout);
	162	rc = wait_event_interruptible_timeout(dev->write_wait,
	163	test_and_clear_bit(BS_WRITABLE,
	164	&dev->buffer_status),
	165	dev->timeout);
	166
	167	if (rc > 0)
	168	DEBUGP(4, dev, "woke up: BulkOut empty\n");
	169	else if (rc == 0)
	170	DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
	171	else if (rc < 0)
	172	DEBUGP(4, dev, "woke up: signal arrived\n");
	173
	174	return rc;
	175	}
	176
	177	/* Write to Sync Control Register */
	178	static int write_sync_reg(unsigned char val, struct reader_dev *dev)
	179	{
fd238232	180	int iobase = dev->p_dev->io.BasePort1;
77c44ab1 HW	181	int rc;
	182
	183	rc = wait_for_bulk_out_ready(dev);
	184	if (rc <= 0)
	185	return rc;
	186
	187	xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
	188	rc = wait_for_bulk_out_ready(dev);
	189	if (rc <= 0)
	190	return rc;
	191
	192	return 1;
	193	}
	194
	195	static int wait_for_bulk_in_ready(struct reader_dev *dev)
	196	{
	197	int i, rc;
fd238232	198	int iobase = dev->p_dev->io.BasePort1;
77c44ab1 HW	199
	200	for (i = 0; i < POLL_LOOP_COUNT; i++) {
	201	if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
	202	& BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
	203	DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
	204	return 1;
	205	}
	206	}
	207
	208	DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
	209	dev->timeout);
	210	rc = wait_event_interruptible_timeout(dev->read_wait,
	211	test_and_clear_bit(BS_READABLE,
	212	&dev->buffer_status),
	213	dev->timeout);
	214	if (rc > 0)
	215	DEBUGP(4, dev, "woke up: BulkIn full\n");
	216	else if (rc == 0)
	217	DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
	218	else if (rc < 0)
	219	DEBUGP(4, dev, "woke up: signal arrived\n");
	220
	221	return rc;
	222	}
	223
	224	static ssize_t cm4040_read(struct file filp, char __user buf,
	225	size_t count, loff_t *ppos)
	226	{
	227	struct reader_dev *dev = filp->private_data;
fd238232	228	int iobase = dev->p_dev->io.BasePort1;
77c44ab1 HW	229	size_t bytes_to_read;
	230	unsigned long i;
	231	size_t min_bytes_to_read;
	232	int rc;
	233	unsigned char uc;
	234
	235	DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
	236
	237	if (count == 0)
	238	return 0;
	239
	240	if (count < 10)
	241	return -EFAULT;
	242
	243	if (filp->f_flags & O_NONBLOCK) {
	244	DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
	245	DEBUGP(2, dev, "<- cm4040_read (failure)\n");
	246	return -EAGAIN;
	247	}
	248
e2d40963	249	if (!pcmcia_dev_present(dev->p_dev))
77c44ab1 HW	250	return -ENODEV;
	251
	252	for (i = 0; i < 5; i++) {
	253	rc = wait_for_bulk_in_ready(dev);
	254	if (rc <= 0) {
	255	DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
	256	DEBUGP(2, dev, "<- cm4040_read (failed)\n");
	257	if (rc == -ERESTARTSYS)
	258	return rc;
	259	return -EIO;
	260	}
	261	dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
	262	#ifdef PCMCIA_DEBUG
	263	if (pc_debug >= 6)
	264	printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
	265	}
	266	printk("\n");
	267	#else
	268	}
	269	#endif
	270
	271	bytes_to_read = 5 + le32_to_cpu((__le32 )&dev->r_buf[1]);
	272
	273	DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
	274
	275	min_bytes_to_read = min(count, bytes_to_read + 5);
059819a4	276	min_bytes_to_read = min_t(size_t, min_bytes_to_read, READ_WRITE_BUFFER_SIZE);
77c44ab1 HW	277
	278	DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
	279
	280	for (i = 0; i < (min_bytes_to_read-5); i++) {
	281	rc = wait_for_bulk_in_ready(dev);
	282	if (rc <= 0) {
	283	DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
	284	DEBUGP(2, dev, "<- cm4040_read (failed)\n");
	285	if (rc == -ERESTARTSYS)
	286	return rc;
	287	return -EIO;
	288	}
	289	dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
	290	#ifdef PCMCIA_DEBUG
	291	if (pc_debug >= 6)
	292	printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
	293	}
	294	printk("\n");
	295	#else
	296	}
	297	#endif
	298
	299	*ppos = min_bytes_to_read;
	300	if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
	301	return -EFAULT;
	302
	303	rc = wait_for_bulk_in_ready(dev);
	304	if (rc <= 0) {
	305	DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
	306	DEBUGP(2, dev, "<- cm4040_read (failed)\n");
	307	if (rc == -ERESTARTSYS)
	308	return rc;
	309	return -EIO;
	310	}
	311
	312	rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
	313	if (rc <= 0) {
	314	DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
	315	DEBUGP(2, dev, "<- cm4040_read (failed)\n");
	316	if (rc == -ERESTARTSYS)
	317	return rc;
	318	else
	319	return -EIO;
	320	}
	321
	322	uc = xinb(iobase + REG_OFFSET_BULK_IN);
	323
	324	DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
	325	return min_bytes_to_read;
	326	}
	327
	328	static ssize_t cm4040_write(struct file filp, const char __user buf,
	329	size_t count, loff_t *ppos)
	330	{
	331	struct reader_dev *dev = filp->private_data;
fd238232	332	int iobase = dev->p_dev->io.BasePort1;
77c44ab1 HW	333	ssize_t rc;
	334	int i;
	335	unsigned int bytes_to_write;
	336
	337	DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
	338
	339	if (count == 0) {
	340	DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
	341	return 0;
	342	}
	343
059819a4	344	if ((count < 5) \|\| (count > READ_WRITE_BUFFER_SIZE)) {
77c44ab1 HW	345	DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
	346	return -EIO;
	347	}
	348
	349	if (filp->f_flags & O_NONBLOCK) {
	350	DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
	351	DEBUGP(4, dev, "<- cm4040_write (failure)\n");
	352	return -EAGAIN;
	353	}
	354
e2d40963	355	if (!pcmcia_dev_present(dev->p_dev))
77c44ab1 HW	356	return -ENODEV;
	357
	358	bytes_to_write = count;
	359	if (copy_from_user(dev->s_buf, buf, bytes_to_write))
	360	return -EFAULT;
	361
	362	switch (dev->s_buf[0]) {
	363	case CMD_PC_TO_RDR_XFRBLOCK:
	364	case CMD_PC_TO_RDR_SECURE:
	365	case CMD_PC_TO_RDR_TEST_SECURE:
	366	case CMD_PC_TO_RDR_OK_SECURE:
	367	dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
	368	break;
	369
	370	case CMD_PC_TO_RDR_ICCPOWERON:
	371	dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
	372	break;
	373
	374	case CMD_PC_TO_RDR_GETSLOTSTATUS:
	375	case CMD_PC_TO_RDR_ICCPOWEROFF:
	376	case CMD_PC_TO_RDR_GETPARAMETERS:
	377	case CMD_PC_TO_RDR_RESETPARAMETERS:
	378	case CMD_PC_TO_RDR_SETPARAMETERS:
	379	case CMD_PC_TO_RDR_ESCAPE:
	380	case CMD_PC_TO_RDR_ICCCLOCK:
	381	default:
	382	dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
	383	break;
	384	}
	385
	386	rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
	387	if (rc <= 0) {
	388	DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
	389	DEBUGP(2, dev, "<- cm4040_write (failed)\n");
	390	if (rc == -ERESTARTSYS)
	391	return rc;
	392	else
	393	return -EIO;
	394	}
	395
	396	DEBUGP(4, dev, "start \n");
	397
	398	for (i = 0; i < bytes_to_write; i++) {
	399	rc = wait_for_bulk_out_ready(dev);
	400	if (rc <= 0) {
	401	DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
	402	rc);
	403	DEBUGP(2, dev, "<- cm4040_write (failed)\n");
	404	if (rc == -ERESTARTSYS)
	405	return rc;
	406	else
	407	return -EIO;
	408	}
	409
	410	xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
	411	}
	412	DEBUGP(4, dev, "end\n");
	413
	414	rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
	415
	416	if (rc <= 0) {
	417	DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
	418	DEBUGP(2, dev, "<- cm4040_write (failed)\n");
	419	if (rc == -ERESTARTSYS)
420	return rc;
421	else
422	return -EIO;
423	}
424
425	DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
426	return count;
427	}
428
429	static unsigned int cm4040_poll(struct file filp, poll_table wait)
430	{
431	struct reader_dev *dev = filp->private_data;
432	unsigned int mask = 0;
433
434	poll_wait(filp, &dev->poll_wait, wait);
435
436	if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
437	mask \|= POLLIN \| POLLRDNORM;
438	if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
439	mask \|= POLLOUT \| POLLWRNORM;
440
441	DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
442
443	return mask;
444	}
445
446	static int cm4040_open(struct inode inode, struct file filp)
447	{
448	struct reader_dev *dev;
fba395ee	449	struct pcmcia_device *link;
77c44ab1 HW	450	int minor = iminor(inode);
	451
	452	if (minor >= CM_MAX_DEV)
	453	return -ENODEV;
	454
	455	link = dev_table[minor];
9940ec36	456	if (link == NULL \|\| !pcmcia_dev_present(link))
77c44ab1 HW	457	return -ENODEV;
	458
	459	if (link->open)
	460	return -EBUSY;
	461
	462	dev = link->priv;
	463	filp->private_data = dev;
	464
	465	if (filp->f_flags & O_NONBLOCK) {
	466	DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
	467	return -EAGAIN;
	468	}
	469
	470	link->open = 1;
	471
	472	dev->poll_timer.data = (unsigned long) dev;
	473	mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
	474
	475	DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
	476	return nonseekable_open(inode, filp);
	477	}
	478
	479	static int cm4040_close(struct inode inode, struct file filp)
	480	{
	481	struct reader_dev *dev = filp->private_data;
fba395ee	482	struct pcmcia_device *link;
77c44ab1 HW	483	int minor = iminor(inode);
	484
	485	DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
	486	iminor(inode));
	487
	488	if (minor >= CM_MAX_DEV)
	489	return -ENODEV;
	490
	491	link = dev_table[minor];
	492	if (link == NULL)
	493	return -ENODEV;
	494
	495	cm4040_stop_poll(dev);
	496
	497	link->open = 0;
	498	wake_up(&dev->devq);
	499
	500	DEBUGP(2, dev, "<- cm4040_close\n");
	501	return 0;
	502	}
	503
fba395ee	504	static void cm4040_reader_release(struct pcmcia_device *link)
77c44ab1 HW	505	{
	506	struct reader_dev *dev = link->priv;
	507
	508	DEBUGP(3, dev, "-> cm4040_reader_release\n");
	509	while (link->open) {
	510	DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release "
	511	"until process has terminated\n");
	512	wait_event(dev->devq, (link->open == 0));
	513	}
	514	DEBUGP(3, dev, "<- cm4040_reader_release\n");
	515	return;
	516	}
	517
15b99ac1	518	static int reader_config(struct pcmcia_device *link, int devno)
77c44ab1	519	{
77c44ab1 HW	520	struct reader_dev *dev;
	521	tuple_t tuple;
	522	cisparse_t parse;
77c44ab1 HW	523	u_char buf[64];
	524	int fail_fn, fail_rc;
	525	int rc;
	526
77c44ab1 HW	527	tuple.Attributes = 0;
	528	tuple.TupleData = buf;
	529	tuple.TupleDataMax = sizeof(buf);
	530	tuple.TupleOffset = 0;
	531
77c44ab1 HW	532	link->io.BasePort2 = 0;
	533	link->io.NumPorts2 = 0;
	534	link->io.Attributes2 = 0;
	535	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
fba395ee	536	for (rc = pcmcia_get_first_tuple(link, &tuple);
77c44ab1	537	rc == CS_SUCCESS;
fba395ee DB	538	rc = pcmcia_get_next_tuple(link, &tuple)) {
fba395ee DB	539	rc = pcmcia_get_tuple_data(link, &tuple);
77c44ab1 HW	540	if (rc != CS_SUCCESS)
77c44ab1 HW	541	continue;
fba395ee	542	rc = pcmcia_parse_tuple(link, &tuple, &parse);
77c44ab1 HW	543	if (rc != CS_SUCCESS)
	544	continue;
	545
	546	link->conf.ConfigIndex = parse.cftable_entry.index;
	547
	548	if (!parse.cftable_entry.io.nwin)
	549	continue;
	550
	551	link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
	552	link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
	553	link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
	554	if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
	555	link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
	556	if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
	557	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
	558	link->io.IOAddrLines = parse.cftable_entry.io.flags
	559	& CISTPL_IO_LINES_MASK;
fba395ee	560	rc = pcmcia_request_io(link, &link->io);
77c44ab1	561
fba395ee	562	dev_printk(KERN_INFO, &handle_to_dev(link), "foo");
77c44ab1 HW	563	if (rc == CS_SUCCESS)
	564	break;
	565	else
fba395ee	566	dev_printk(KERN_INFO, &handle_to_dev(link),
77c44ab1 HW	567	"pcmcia_request_io failed 0x%x\n", rc);
	568	}
	569	if (rc != CS_SUCCESS)
	570	goto cs_release;
	571
	572	link->conf.IntType = 00000002;
	573
fba395ee	574	if ((fail_rc = pcmcia_request_configuration(link,&link->conf))
77c44ab1 HW	575	!=CS_SUCCESS) {
77c44ab1 HW	576	fail_fn = RequestConfiguration;
fba395ee	577	dev_printk(KERN_INFO, &handle_to_dev(link),
77c44ab1 HW	578	"pcmcia_request_configuration failed 0x%x\n",
	579	fail_rc);
	580	goto cs_release;
	581	}
	582
	583	dev = link->priv;
	584	sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
	585	dev->node.major = major;
	586	dev->node.minor = devno;
e2d40963	587	dev->node.next = &dev->node;
77c44ab1 HW	588
	589	DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
	590	link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
	591	DEBUGP(2, dev, "<- reader_config (succ)\n");
	592
15b99ac1	593	return 0;
77c44ab1	594
77c44ab1 HW	595	cs_release:
77c44ab1 HW	596	reader_release(link);
15b99ac1	597	return -ENODEV;
77c44ab1 HW	598	}
77c44ab1 HW	599
fba395ee	600	static void reader_release(struct pcmcia_device *link)
77c44ab1	601	{
925796e0	602	cm4040_reader_release(link);
fba395ee	603	pcmcia_disable_device(link);
77c44ab1 HW	604	}
77c44ab1 HW	605
15b99ac1	606	static int reader_probe(struct pcmcia_device *link)
77c44ab1 HW	607	{
77c44ab1 HW	608	struct reader_dev *dev;
15b99ac1	609	int i, ret;
77c44ab1 HW	610
	611	for (i = 0; i < CM_MAX_DEV; i++) {
	612	if (dev_table[i] == NULL)
	613	break;
	614	}
	615
	616	if (i == CM_MAX_DEV)
f8cfa618	617	return -ENODEV;
77c44ab1 HW	618
	619	dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
	620	if (dev == NULL)
f8cfa618	621	return -ENOMEM;
77c44ab1 HW	622
	623	dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
	624	dev->buffer_status = 0;
	625
77c44ab1	626	link->priv = dev;
fba395ee	627	dev->p_dev = link;
77c44ab1 HW	628
	629	link->conf.IntType = INT_MEMORY_AND_IO;
	630	dev_table[i] = link;
	631
77c44ab1 HW	632	init_waitqueue_head(&dev->devq);
	633	init_waitqueue_head(&dev->poll_wait);
	634	init_waitqueue_head(&dev->read_wait);
	635	init_waitqueue_head(&dev->write_wait);
40565f19	636	setup_timer(&dev->poll_timer, cm4040_do_poll, 0);
77c44ab1	637
15b99ac1	638	ret = reader_config(link, i);
54493c10 AM	639	if (ret) {
	640	dev_table[i] = NULL;
	641	kfree(dev);
15b99ac1	642	return ret;
54493c10	643	}
f8cfa618	644
07c015e7	645	device_create(cmx_class, NULL, MKDEV(major, i), "cmx%d", i);
67bc6200	646
f8cfa618	647	return 0;
77c44ab1 HW	648	}
77c44ab1 HW	649
fba395ee	650	static void reader_detach(struct pcmcia_device *link)
77c44ab1 HW	651	{
77c44ab1 HW	652	struct reader_dev *dev = link->priv;
cc3b4866	653	int devno;
77c44ab1 HW	654
77c44ab1 HW	655	/* find device */
cc3b4866 DB	656	for (devno = 0; devno < CM_MAX_DEV; devno++) {
cc3b4866 DB	657	if (dev_table[devno] == link)
77c44ab1 HW	658	break;
77c44ab1 HW	659	}
cc3b4866	660	if (devno == CM_MAX_DEV)
77c44ab1 HW	661	return;
77c44ab1 HW	662
e2d40963	663	reader_release(link);
cc3b4866 DB	664
	665	dev_table[devno] = NULL;
	666	kfree(dev);
	667
07c015e7	668	device_destroy(cmx_class, MKDEV(major, devno));
67bc6200	669
77c44ab1 HW	670	return;
	671	}
	672
62322d25	673	static const struct file_operations reader_fops = {
77c44ab1 HW	674	.owner = THIS_MODULE,
	675	.read = cm4040_read,
	676	.write = cm4040_write,
	677	.open = cm4040_open,
	678	.release = cm4040_close,
	679	.poll = cm4040_poll,
	680	};
	681
	682	static struct pcmcia_device_id cm4040_ids[] = {
	683	PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
	684	PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
	685	0xE32CDD8C, 0x8F23318B),
	686	PCMCIA_DEVICE_NULL,
	687	};
	688	MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
	689
	690	static struct pcmcia_driver reader_driver = {
	691	.owner = THIS_MODULE,
	692	.drv = {
	693	.name = "cm4040_cs",
	694	},
15b99ac1	695	.probe = reader_probe,
cc3b4866	696	.remove = reader_detach,
77c44ab1 HW	697	.id_table = cm4040_ids,
	698	};
	699
	700	static int __init cm4040_init(void)
	701	{
67bc6200 HW	702	int rc;
67bc6200 HW	703
77c44ab1	704	printk(KERN_INFO "%s\n", version);
67bc6200	705	cmx_class = class_create(THIS_MODULE, "cardman_4040");
5eb5fc97 AM	706	if (IS_ERR(cmx_class))
5eb5fc97 AM	707	return PTR_ERR(cmx_class);
67bc6200	708
77c44ab1 HW	709	major = register_chrdev(0, DEVICE_NAME, &reader_fops);
	710	if (major < 0) {
	711	printk(KERN_WARNING MODULE_NAME
	712	": could not get major number\n");
54493c10	713	class_destroy(cmx_class);
5eb5fc97	714	return major;
77c44ab1	715	}
7fc5b1e3 HW	716
	717	rc = pcmcia_register_driver(&reader_driver);
	718	if (rc < 0) {
	719	unregister_chrdev(major, DEVICE_NAME);
54493c10	720	class_destroy(cmx_class);
7fc5b1e3 HW	721	return rc;
	722	}
	723
77c44ab1 HW	724	return 0;
	725	}
	726
	727	static void __exit cm4040_exit(void)
	728	{
77c44ab1 HW	729	printk(KERN_INFO MODULE_NAME ": unloading\n");
77c44ab1 HW	730	pcmcia_unregister_driver(&reader_driver);
77c44ab1	731	unregister_chrdev(major, DEVICE_NAME);
67bc6200	732	class_destroy(cmx_class);
77c44ab1 HW	733	}
	734
	735	module_init(cm4040_init);
	736	module_exit(cm4040_exit);
	737	MODULE_LICENSE("Dual BSD/GPL");