| /* |
| * 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. |
| */ |
| |
| #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/smp_lock.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" |
| |
| |
| #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) |
| |
| 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 CM4040_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 |
| |
| /* 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 CM4040_DEBUG |
| pr_debug("%lu:%2x ", i, dev->r_buf[i]); |
| } |
| pr_debug("\n"); |
| #else |
| } |
| #endif |
| |
| bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]); |
| |
| 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=%zu\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 CM4040_DEBUG |
| pr_debug("%lu:%2x ", i, dev->r_buf[i]); |
| } |
| pr_debug("\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); |
| int ret; |
| |
| if (minor >= CM_MAX_DEV) |
| return -ENODEV; |
| |
| lock_kernel(); |
| 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; |
| |
| if (filp->f_flags & O_NONBLOCK) { |
| DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n"); |
| ret = -EAGAIN; |
| goto out; |
| } |
| |
| 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"); |
| 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; |
| 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 cm4040_config_check(struct pcmcia_device *p_dev, |
| cistpl_cftable_entry_t *cfg, |
| cistpl_cftable_entry_t *dflt, |
| unsigned int vcc, |
| void *priv_data) |
| { |
| int rc; |
| if (!cfg->io.nwin) |
| return -ENODEV; |
| |
| /* 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; |
| } |
| |
| |
| 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; |
| |
| if (pcmcia_loop_config(link, cm4040_config_check, NULL)) |
| goto cs_release; |
| |
| link->conf.IntType = 00000002; |
| |
| 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; |
| } |
| |
| 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), NULL, "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"); |