*
* (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.
* 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/fs.h>
#include <linux/delay.h>
#include <linux/poll.h>
+#include <linux/smp_lock.h>
#include <linux/wait.h>
#include <asm/uaccess.h>
#include <asm/io.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); \
+#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";
+"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)
/* 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 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;
+ struct pcmcia_device *p_dev;
dev_node_t node;
wait_queue_head_t devq;
wait_queue_head_t poll_wait;
struct timer_list poll_timer;
};
-static dev_info_t dev_info = MODULE_NAME;
-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);
}
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
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->io.BasePort1
+ REG_OFFSET_BUFFER_STATUS);
if ((obs & BSR_BULK_IN_FULL)) {
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->io.BasePort1;
for (i = 0; i < POLL_LOOP_COUNT; i++) {
if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
/* 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->io.BasePort1;
int rc;
rc = wait_for_bulk_out_ready(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->io.BasePort1;
for (i = 0; i < POLL_LOOP_COUNT; i++) {
if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
size_t count, loff_t *ppos)
{
struct reader_dev *dev = filp->private_data;
- int iobase = dev->link.io.BasePort1;
+ int iobase = dev->p_dev->io.BasePort1;
size_t bytes_to_read;
unsigned long i;
size_t min_bytes_to_read;
return -EAGAIN;
}
- if ((dev->link.state & DEV_PRESENT)==0)
+ if (!pcmcia_dev_present(dev->p_dev))
return -ENODEV;
for (i = 0; i < 5; i++) {
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);
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
size_t count, loff_t *ppos)
{
struct reader_dev *dev = filp->private_data;
- int iobase = dev->link.io.BasePort1;
+ int iobase = dev->p_dev->io.BasePort1;
ssize_t rc;
int i;
unsigned int bytes_to_write;
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;
}
return -EAGAIN;
}
- if ((dev->link.state & DEV_PRESENT) == 0)
+ if (!pcmcia_dev_present(dev->p_dev))
return -ENODEV;
bytes_to_write = count;
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;
+ lock_kernel();
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;
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:
+ unlock_kernel();
+ 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),
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;
return;
}
-static void reader_config(dev_link_t *link, int devno)
+static int cm4040_config_check(struct pcmcia_device *p_dev,
+ cistpl_cftable_entry_t *cfg,
+ cistpl_cftable_entry_t *dflt,
+ unsigned int vcc,
+ 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;
+ if (!cfg->io.nwin)
+ return -ENODEV;
- handle = link->handle;
-
- tuple.DesiredTuple = CISTPL_CONFIG;
- tuple.Attributes = 0;
- tuple.TupleData = buf;
- tuple.TupleDataMax = sizeof(buf);
- tuple.TupleOffset = 0;
+ /* Get the IOaddr */
+ p_dev->io.BasePort1 = cfg->io.win[0].base;
+ p_dev->io.NumPorts1 = cfg->io.win[0].len;
+ p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+ if (!(cfg->io.flags & CISTPL_IO_8BIT))
+ p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+ if (!(cfg->io.flags & CISTPL_IO_16BIT))
+ p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ p_dev->io.IOAddrLines = cfg->io.flags & CISTPL_IO_LINES_MASK;
+
+ rc = pcmcia_request_io(p_dev, &p_dev->io);
+ dev_printk(KERN_INFO, &p_dev->dev,
+ "pcmcia_request_io returned 0x%x\n", rc);
+ return 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->state |= DEV_CONFIG;
- link->conf.ConfigBase = parse.config.base;
- link->conf.Present = parse.config.rmask[0];
- link->conf.Vcc = conf.Vcc;
+static int reader_config(struct pcmcia_device *link, int devno)
+{
+ struct reader_dev *dev;
+ int fail_rc;
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),
+ fail_rc = pcmcia_request_configuration(link, &link->conf);
+ if (fail_rc != 0) {
+ dev_printk(KERN_INFO, &link->dev,
"pcmcia_request_configuration failed 0x%x\n",
fail_rc);
goto cs_release;
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;
+ 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;
+ return 0;
-cs_failed:
- cs_error(handle, fail_fn, fail_rc);
cs_release:
reader_release(link);
- link->state &= ~DEV_CONFIG_PENDING;
-}
-
-static int reader_event(event_t event, int priority,
- event_callback_args_t *args)
-{
- dev_link_t *link;
- struct reader_dev *dev;
- int devno;
-
- link = args->client_data;
- dev = link->priv;
- DEBUGP(3, dev, "-> reader_event\n");
- for (devno = 0; devno < CM_MAX_DEV; devno++) {
- if (dev_table[devno] == link)
- break;
- }
- if (devno == CM_MAX_DEV)
- return CS_BAD_ADAPTER;
-
- switch (event) {
- case CS_EVENT_CARD_INSERTION:
- DEBUGP(5, dev, "CS_EVENT_CARD_INSERTION\n");
- link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
- reader_config(link, devno);
- break;
- case CS_EVENT_CARD_REMOVAL:
- DEBUGP(5, dev, "CS_EVENT_CARD_REMOVAL\n");
- link->state &= ~DEV_PRESENT;
- break;
-
- default:
- DEBUGP(5, dev, "reader_event: unknown event %.2x\n",
- event);
- break;
- }
- DEBUGP(3, dev, "<- reader_event\n");
- return CS_SUCCESS;
+ 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;
+ cm4040_reader_release(link);
+ pcmcia_disable_device(link);
}
-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);
-}
-
-static dev_link_t *reader_attach(void)
+static int reader_probe(struct pcmcia_device *link)
{
struct reader_dev *dev;
- dev_link_t *link;
- client_reg_t client_reg;
- int i;
+ int i, ret;
for (i = 0; i < CM_MAX_DEV; i++) {
if (dev_table[i] == NULL)
}
if (i == CM_MAX_DEV)
- return NULL;
+ return -ENODEV;
dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
if (dev == NULL)
- return NULL;
+ return -ENOMEM;
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;
- client_reg.dev_info = &dev_info;
- client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
- client_reg.EventMask=
- CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
- CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
- CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
- client_reg.Version = 0x0210;
- client_reg.event_callback_args.client_data = link;
- i = pcmcia_register_client(&link->handle, &client_reg);
- if (i) {
- cs_error(link->handle, RegisterClient, i);
- reader_detach(link);
- return NULL;
- }
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;
-
- return link;
-}
-
-static void reader_detach_by_devno(int devno, dev_link_t *link)
-{
- struct reader_dev *dev = link->priv;
+ setup_timer(&dev->poll_timer, cm4040_do_poll, 0);
- if (link->state & DEV_CONFIG) {
- DEBUGP(5, dev, "device still configured (try to release it)\n");
- reader_release(link);
+ ret = reader_config(link, i);
+ if (ret) {
+ dev_table[i] = NULL;
+ kfree(dev);
+ return ret;
}
- pcmcia_deregister_client(link->handle);
- dev_table[devno] = NULL;
- DEBUGP(5, dev, "freeing dev=%p\n", dev);
- cm4040_stop_poll(dev);
- kfree(dev);
- return;
+ device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
+
+ return 0;
}
-static void reader_detach(dev_link_t *link)
+static void reader_detach(struct pcmcia_device *link)
{
- int i;
+ struct reader_dev *dev = link->priv;
+ int devno;
/* find device */
- for (i = 0; i < CM_MAX_DEV; i++) {
- if (dev_table[i] == link)
+ for (devno = 0; devno < CM_MAX_DEV; devno++) {
+ if (dev_table[devno] == link)
break;
}
- if (i == CM_MAX_DEV)
+ if (devno == CM_MAX_DEV)
return;
- reader_detach_by_devno(i, 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,
.drv = {
.name = "cm4040_cs",
},
- .attach = reader_attach,
- .detach = reader_detach,
- .suspend = reader_suspend,
- .resume = reader_resume,
- .event = reader_event,
+ .probe = reader_probe,
+ .remove = reader_detach,
.id_table = cm4040_ids,
};
static int __init cm4040_init(void)
{
+ int rc;
+
printk(KERN_INFO "%s\n", version);
- pcmcia_register_driver(&reader_driver);
+ 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)
{
- int i;
-
printk(KERN_INFO MODULE_NAME ": unloading\n");
pcmcia_unregister_driver(&reader_driver);
- for (i = 0; i < CM_MAX_DEV; i++) {
- if (dev_table[i])
- reader_detach_by_devno(i, dev_table[i]);
- }
unregister_chrdev(major, DEVICE_NAME);
+ class_destroy(cmx_class);
}
module_init(cm4040_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff