1 files changed, 115 insertions, 206 deletions

diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index 46eb371bf17..8dd48a2be91 100644
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -3,12 +3,13 @@
  *
  * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
  *
- * (C) 2005 Harald Welte <laforge@gnumonks.org>
+ * (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.
@@ -16,8 +17,6 @@
  * All rights reserved, Dual BSD/GPL Licensed.
  */
 
-/* #define PCMCIA_DEBUG 6 */
-
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
@@ -25,12 +24,11 @@
 #include <linux/fs.h>
 #include <linux/delay.h>
 #include <linux/poll.h>
+#include <linux/mutex.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>
@@ -39,21 +37,18 @@
 #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); 			\
+#define reader_to_dev(x)	(&x->p_dev->dev)
+
+/* n (debug level) is ignored */
+/* additional debug output may be enabled by re-compiling with
+ * CM4040_DEBUG set */
+/* #define CM4040_DEBUG */
+#define DEBUGP(n, rdr, x, args...) do { 		\
+		dev_dbg(reader_to_dev(rdr), "%s:" x, 	\
+			   __func__ , ## args);		\
 	} while (0)
-#else
-#define DEBUGP(n, rdr, x, args...)
-#endif
 
-static char *version =
-"OMNIKEY CardMan 4040 v1.1.0gm4 - All bugs added by Harald Welte";
+static DEFINE_MUTEX(cm4040_mutex);
 
 #define	CCID_DRIVER_BULK_DEFAULT_TIMEOUT  	(150*HZ)
 #define	CCID_DRIVER_ASYNC_POWERUP_TIMEOUT 	(35*HZ)
@@ -64,16 +59,16 @@ static char *version =
 /* 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_release(struct pcmcia_device *link);
 
 static int major;
+static struct class *cmx_class;
 
 #define		BS_READABLE	0x01
 #define		BS_WRITABLE	0x02
 
 struct reader_dev {
-	dev_link_t		link;
-	dev_node_t		node;
+	struct pcmcia_device	*p_dev;
 	wait_queue_head_t	devq;
 	wait_queue_head_t	poll_wait;
 	wait_queue_head_t	read_wait;
@@ -85,16 +80,15 @@ struct reader_dev {
 	struct timer_list 	poll_timer;
 };
 
-static dev_link_t *dev_table[CM_MAX_DEV];
+static struct pcmcia_device *dev_table[CM_MAX_DEV];
 
-#ifndef PCMCIA_DEBUG
+#ifndef CM4040_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);
+	pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
 	outb(val, port);
 }
 
@@ -103,8 +97,7 @@ 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);
+	pr_debug("%.2x=inb(%.4x)\n", val, port);
 	return val;
 }
 #endif
@@ -114,7 +107,7 @@ static inline unsigned char xinb(unsigned short port)
 static void cm4040_do_poll(unsigned long dummy)
 {
 	struct reader_dev *dev = (struct reader_dev *) dummy;
-	unsigned int obs = xinb(dev->link.io.BasePort1
+	unsigned int obs = xinb(dev->p_dev->resource[0]->start
 				+ REG_OFFSET_BUFFER_STATUS);
 
 	if ((obs & BSR_BULK_IN_FULL)) {
@@ -145,7 +138,7 @@ static void cm4040_stop_poll(struct reader_dev *dev)
 static int wait_for_bulk_out_ready(struct reader_dev *dev)
 {
 	int i, rc;
-	int iobase = dev->link.io.BasePort1;
+	int iobase = dev->p_dev->resource[0]->start;
 
 	for (i = 0; i < POLL_LOOP_COUNT; i++) {
 		if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
@@ -175,7 +168,7 @@ static int wait_for_bulk_out_ready(struct reader_dev *dev)
 /* Write to Sync Control Register */
 static int write_sync_reg(unsigned char val, struct reader_dev *dev)
 {
-	int iobase = dev->link.io.BasePort1;
+	int iobase = dev->p_dev->resource[0]->start;
 	int rc;
 
 	rc = wait_for_bulk_out_ready(dev);
@@ -193,7 +186,7 @@ static int write_sync_reg(unsigned char val, struct reader_dev *dev)
 static int wait_for_bulk_in_ready(struct reader_dev *dev)
 {
 	int i, rc;
-	int iobase = dev->link.io.BasePort1;
+	int iobase = dev->p_dev->resource[0]->start;
 
 	for (i = 0; i < POLL_LOOP_COUNT; i++) {
 		if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
@@ -223,7 +216,7 @@ 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;
+	int iobase = dev->p_dev->resource[0]->start;
 	size_t bytes_to_read;
 	unsigned long i;
 	size_t min_bytes_to_read;
@@ -244,7 +237,7 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf,
 		return -EAGAIN;
 	}
 
-	if ((dev->link.state & DEV_PRESENT)==0)
+	if (!pcmcia_dev_present(dev->p_dev))
 		return -ENODEV;
 
 	for (i = 0; i < 5; i++) {
@@ -257,22 +250,22 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf,
 			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]);
+#ifdef CM4040_DEBUG
+		pr_debug("%lu:%2x ", i, dev->r_buf[i]);
 	}
-	printk("\n");
+	pr_debug("\n");
 #else
 	}
 #endif
 
 	bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
 
-	DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
+	DEBUGP(6, dev, "BytesToRead=%zu\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);
+	DEBUGP(6, dev, "Min=%zu\n", min_bytes_to_read);
 
 	for (i = 0; i < (min_bytes_to_read-5); i++) {
 		rc = wait_for_bulk_in_ready(dev);
@@ -284,11 +277,10 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf,
 			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]);
+#ifdef CM4040_DEBUG
+		pr_debug("%lu:%2x ", i, dev->r_buf[i]);
 	}
-	printk("\n");
+	pr_debug("\n");
 #else
 	}
 #endif
@@ -326,7 +318,7 @@ 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;
+	int iobase = dev->p_dev->resource[0]->start;
 	ssize_t rc;
 	int i;
 	unsigned int bytes_to_write;
@@ -338,7 +330,7 @@ static ssize_t cm4040_write(struct file *filp, const char __user *buf,
 		return 0;
 	}
 
-	if (count < 5) {
+	if ((count < 5) || (count > READ_WRITE_BUFFER_SIZE)) {
 		DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
 		return -EIO;
 	}
@@ -349,7 +341,7 @@ static ssize_t cm4040_write(struct file *filp, const char __user *buf,
 		return -EAGAIN;
 	}
 
-	if ((dev->link.state & DEV_PRESENT) == 0)
+	if (!pcmcia_dev_present(dev->p_dev))
 		return -ENODEV;
 
 	bytes_to_write = count;
@@ -443,25 +435,32 @@ static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
 static int cm4040_open(struct inode *inode, struct file *filp)
 {
 	struct reader_dev *dev;
-	dev_link_t *link;
+	struct pcmcia_device *link;
 	int minor = iminor(inode);
+	int ret;
 
 	if (minor >= CM_MAX_DEV)
 		return -ENODEV;
 
+	mutex_lock(&cm4040_mutex);
 	link = dev_table[minor];
-	if (link == NULL || !(DEV_OK(link)))
-		return -ENODEV;
+	if (link == NULL || !pcmcia_dev_present(link)) {
+		ret = -ENODEV;
+		goto out;
+	}
 
-	if (link->open)
-		return -EBUSY;
+	if (link->open) {
+		ret = -EBUSY;
+		goto out;
+	}
 
 	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;
+		ret = -EAGAIN;
+		goto out;
 	}
 
 	link->open = 1;
@@ -470,13 +469,16 @@ static int cm4040_open(struct inode *inode, struct file *filp)
 	mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
 
 	DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
-	return nonseekable_open(inode, filp);
+	ret = nonseekable_open(inode, filp);
+out:
+	mutex_unlock(&cm4040_mutex);
+	return ret;
 }
 
 static int cm4040_close(struct inode *inode, struct file *filp)
 {
 	struct reader_dev *dev = filp->private_data;
-	dev_link_t *link;
+	struct pcmcia_device *link;
 	int minor = iminor(inode);
 
 	DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
@@ -498,7 +500,7 @@ static int cm4040_close(struct inode *inode, struct file *filp)
 	return 0;
 }
 
-static void cm4040_reader_release(dev_link_t *link)
+static void cm4040_reader_release(struct pcmcia_device *link)
 {
 	struct reader_dev *dev = link->priv;
 
@@ -512,155 +514,53 @@ static void cm4040_reader_release(dev_link_t *link)
 	return;
 }
 
-static void reader_config(dev_link_t *link, int devno)
+static int cm4040_config_check(struct pcmcia_device *p_dev, void *priv_data)
 {
-	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;
+	return pcmcia_request_io(p_dev);
+}
 
-	handle = link->handle;
 
-	tuple.DesiredTuple = CISTPL_CONFIG;
-	tuple.Attributes = 0;
-	tuple.TupleData = buf;
-	tuple.TupleDataMax = sizeof(buf);
- 	tuple.TupleOffset = 0;
+static int reader_config(struct pcmcia_device *link, int devno)
+{
+	struct reader_dev *dev;
+	int fail_rc;
 
-	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->config_flags |= CONF_AUTO_SET_IO;
 
-	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;
-
-		link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
-		link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
-		link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
-		if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
-			link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
-		if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
-			link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
-		link->io.IOAddrLines = parse.cftable_entry.io.flags
-						& CISTPL_IO_LINES_MASK;
-		rc = pcmcia_request_io(handle, &link->io);
-
-		dev_printk(KERN_INFO, &handle_to_dev(handle), "foo");
-		if (rc == CS_SUCCESS)
-			break;
-		else
-			dev_printk(KERN_INFO, &handle_to_dev(handle),
-				   "pcmcia_request_io failed 0x%x\n", rc);
-	}
-	if (rc != CS_SUCCESS)
+	if (pcmcia_loop_config(link, cm4040_config_check, NULL))
 		goto cs_release;
 
-	link->conf.IntType = 00000002;
-
-	if ((fail_rc = pcmcia_request_configuration(handle,&link->conf))
-								!=CS_SUCCESS) {
-		fail_fn = RequestConfiguration;
-		dev_printk(KERN_INFO, &handle_to_dev(handle),
-			   "pcmcia_request_configuration failed 0x%x\n",
+	fail_rc = pcmcia_enable_device(link);
+	if (fail_rc != 0) {
+		dev_printk(KERN_INFO, &link->dev,
+			   "pcmcia_enable_device 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 = NULL;
-	link->dev = &dev->node;
-	link->state &= ~DEV_CONFIG_PENDING;
-
-	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, "device " DEVICE_NAME "%d at %pR\n", devno,
+	      link->resource[0]);
 	DEBUGP(2, dev, "<- reader_config (succ)\n");
 
-	return;
+	return 0;
 
-cs_failed:
-	cs_error(handle, fail_fn, fail_rc);
 cs_release:
 	reader_release(link);
-	link->state &= ~DEV_CONFIG_PENDING;
+	return -ENODEV;
 }
 
-static int reader_suspend(struct pcmcia_device *p_dev)
+static void reader_release(struct pcmcia_device *link)
 {
-	dev_link_t *link = dev_to_instance(p_dev);
-
-	link->state |= DEV_SUSPEND;
-	if (link->state & DEV_CONFIG)
-		pcmcia_release_configuration(link->handle);
-
-	return 0;
-}
-
-static int reader_resume(struct pcmcia_device *p_dev)
-{
-	dev_link_t *link = dev_to_instance(p_dev);
-
-	link->state &= ~DEV_SUSPEND;
-	if (link->state & DEV_CONFIG)
-		pcmcia_request_configuration(link->handle, &link->conf);
-
-	return 0;
-}
-
-static void reader_release(dev_link_t *link)
-{
-	cm4040_reader_release(link->priv);
-	pcmcia_release_configuration(link->handle);
-	pcmcia_release_io(link->handle, &link->io);
+	cm4040_reader_release(link);
+	pcmcia_disable_device(link);
 }
 
-static int reader_attach(struct pcmcia_device *p_dev)
+static int reader_probe(struct pcmcia_device *link)
 {
 	struct reader_dev *dev;
-	dev_link_t *link;
-	int i;
+	int i, ret;
 
 	for (i = 0; i < CM_MAX_DEV; i++) {
 		if (dev_table[i] == NULL)
@@ -677,31 +577,31 @@ static int reader_attach(struct pcmcia_device *p_dev)
 	dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
 	dev->buffer_status = 0;
 
-	link = &dev->link;
 	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);
-	init_timer(&dev->poll_timer);
-	dev->poll_timer.function = &cm4040_do_poll;
+	setup_timer(&dev->poll_timer, cm4040_do_poll, 0);
 
-	link->handle = p_dev;
-	p_dev->instance = link;
+	ret = reader_config(link, i);
+	if (ret) {
+		dev_table[i] = NULL;
+		kfree(dev);
+		return ret;
+	}
 
-	link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
-	reader_config(link, i);
+	device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
 
 	return 0;
 }
 
-static void reader_detach(struct pcmcia_device *p_dev)
+static void reader_detach(struct pcmcia_device *link)
 {
-	dev_link_t *link = dev_to_instance(p_dev);
 	struct reader_dev *dev = link->priv;
 	int devno;
 
@@ -713,27 +613,27 @@ static void reader_detach(struct pcmcia_device *p_dev)
 	if (devno == CM_MAX_DEV)
 		return;
 
-	link->state &= ~DEV_PRESENT;
-
-	if (link->state & DEV_CONFIG)
-		reader_release(link);
+	reader_release(link);
 
 	dev_table[devno] = NULL;
 	kfree(dev);
 
+	device_destroy(cmx_class, MKDEV(major, devno));
+
 	return;
 }
 
-static struct file_operations reader_fops = {
+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,
+	.llseek		= no_llseek,
 };
 
-static struct pcmcia_device_id cm4040_ids[] = {
+static const struct pcmcia_device_id cm4040_ids[] = {
 	PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
 	PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
 				0xE32CDD8C, 0x8F23318B),
@@ -743,34 +643,43 @@ MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
 
 static struct pcmcia_driver reader_driver = {
   	.owner		= THIS_MODULE,
-  	.drv		= {
-		.name	= "cm4040_cs",
-	},
-	.probe		= reader_attach,
+	.name		= "cm4040_cs",
+	.probe		= reader_probe,
 	.remove		= reader_detach,
-	.suspend	= reader_suspend,
-	.resume		= reader_resume,
 	.id_table	= cm4040_ids,
 };
 
 static int __init cm4040_init(void)
 {
-	printk(KERN_INFO "%s\n", version);
-	pcmcia_register_driver(&reader_driver);
+	int rc;
+
+	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");
-		return -1;
+		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);