Scr24x Pcmcia Smart Card Reader



This implements only the very basic protocol 'Mode A', just to make the
device functional. Patches to implement 'Mode C' that uses better bulking
and is interrupt-driver may follow.
The device essentially speaks the same protocol as USB CCID devices do over
the bulk endpoints. The driver exchanges the command submissions and
responses over a plain read()/write() interface, compatible with legacy
OpenCT's pcmcia_block driver.
Patches for the newer CCID driver are available:
https://github.com/lkundrak/CCID/tree/lr/pcmcia_block
Signed-off-by: Lubomir Rintel <lkun...@v3.sk>
---
MAINTAINERS | 5 +
drivers/char/pcmcia/Kconfig | 11 ++
drivers/char/pcmcia/Makefile | 1 +
drivers/char/pcmcia/scr24x_cs.c | 357 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 374 insertions(+)
create mode 100644 drivers/char/pcmcia/scr24x_cs.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 5327bbe..8dc6a9f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10608,6 +10608,11 @@ W: http://www.sunplus.com
S: Supported
F: arch/score/
+SCR24X CHIP CARD INTERFACE DRIVER
+M: Lubomir Rintel <lkun...@v3.sk>
+S: Supported
+F: drivers/char/pcmcia/scr24x_cs.c
+
SYSTEM CONTROL & POWER INTERFACE (SCPI) Message Protocol drivers
M: Sudeep Holla <sudee...@arm.com>
L: linux-ar...@lists.infradead.org
diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index 8d3dfb0..1d1e7da 100644
--- a/drivers/char/pcmcia/Kconfig
+++ b/drivers/char/pcmcia/Kconfig
@@ -43,6 +43,17 @@ config CARDMAN_4040
(http://www.omnikey.com/), or a current development version of OpenCT
(http://www.opensc-project.org/opensc).
+config SCR24X
+ tristate 'SCR24x Chip Card Interface support'
+ depends on PCMCIA
+ help
+ Enable support for the SCR24x PCMCIA Chip Card Interface.
+
+ To compile this driver as a module, choose M here.
+ The module will be called scr24x_cs..
+
+ If unsure say N.
+
config IPWIRELESS
tristate 'IPWireless 3G UMTS PCMCIA card support'
depends on PCMCIA && NETDEVICES && TTY
diff --git a/drivers/char/pcmcia/Makefile b/drivers/char/pcmcia/Makefile
index 0aae209..5b836bc 100644
--- a/drivers/char/pcmcia/Makefile
+++ b/drivers/char/pcmcia/Makefile
@@ -7,3 +7,4 @@
obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o
obj-$(CONFIG_CARDMAN_4000) += cm4000_cs.o
obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o
+obj-$(CONFIG_SCR24X) += scr24x_cs.o
diff --git a/drivers/char/pcmcia/scr24x_cs.c b/drivers/char/pcmcia/scr24x_cs.c
new file mode 100644
index 0000000..24379ac
--- /dev/null
+++ b/drivers/char/pcmcia/scr24x_cs.c
@@ -0,0 +1,357 @@
+/*
+ * SCR24x PCMCIA Smart Card Reader Driver
+ *
+ * Copyright (C) 2005-2006 TL Sudheendran
+ * Copyright (C) 2016 Lubomir Rintel
+ *
+ * Derived from 'scr24x_v4.2.6_Release.tar.gz' driver by TL Sudheendran.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/cdev.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#define CCID_HEADER_SIZE 10
+#define CCID_LENGTH_OFFSET 1
+#define CCID_MAX_LEN 271
+
+#define SCR24X_DATA(n) (1 + n)
+#define SCR24X_CMD_STATUS 7
+#define CMD_START 0x40
+#define CMD_WRITE_BYTE 0x41
+#define CMD_READ_BYTE 0x42
+#define STATUS_BUSY 0x80
+
+struct scr24x_dev {
+ struct device *dev;
+ struct cdev c_dev;
+ unsigned char buf[CCID_MAX_LEN];
+ int devno;
+ struct mutex lock;
+ struct kref refcnt;
+ u8 __iomem *regs;
+};
+
+#define SCR24X_DEVS 8
+static DECLARE_BITMAP(scr24x_minors, SCR24X_DEVS);
+
+static struct class *scr24x_class;
+dev_t scr24x_devt;
+
+static void scr24x_delete(struct kref *kref)
+{
+ struct scr24x_dev *dev = container_of(kref, struct scr24x_dev,
+ refcnt);
+
+ kfree(dev);
+}
+
+static int scr24x_wait_ready(struct scr24x_dev *dev)
+{
+ u_char status;
+ int timeout = 100;
+
+ do {
+ status = ioread8(dev->regs + SCR24X_CMD_STATUS);
+ if (!(status & STATUS_BUSY))
+ return 0;
+
+ msleep(20);
+ } while (--timeout);
+
+ return -EIO;
+}
+
+static int scr24x_open(struct inode *inode, struct file *filp)
+{
+ struct scr24x_dev *dev = container_of(inode->i_cdev,
+ struct scr24x_dev, c_dev);
+
+ kref_get(&dev->refcnt);
+ filp->private_data = dev;
+
+ return nonseekable_open(inode, filp);
+}
+
+static int scr24x_release(struct inode *inode, struct file *filp)
+{
+ struct scr24x_dev *dev = filp->private_data;
+
+ kref_put(&dev->refcnt, scr24x_delete);
+ return 0;
+}
+
+static int read_chunk(struct scr24x_dev *dev, size_t offset, size_t limit)
+{
+ size_t i, y;
+ int ret;
+
+ for (i = offset; i < limit; i += 5) {
+ iowrite8(CMD_READ_BYTE, dev->regs + SCR24X_CMD_STATUS);
+ ret = scr24x_wait_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ for (y = 0; y < 5 && i + y < limit; y++)
+ dev->buf[i + y] = ioread8(dev->regs + SCR24X_DATA(y));
+ }
+
+ return 0;
+}
+
+static ssize_t scr24x_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ struct scr24x_dev *dev = filp->private_data;
+ int ret;
+ int len;
+
+ if (count < CCID_HEADER_SIZE)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&dev->lock))
+ return -ERESTARTSYS;
+
+ if (!dev->dev) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ ret = scr24x_wait_ready(dev);
+ if (ret < 0)
+ goto out;
+ len = CCID_HEADER_SIZE;
+ ret = read_chunk(dev, 0, len);
+ if (ret < 0)
+ goto out;
+
+ len += le32_to_cpu(*(__le32 *)(&dev->buf[CCID_LENGTH_OFFSET]));
+ if (len > sizeof(dev->buf)) {
+ ret = -EIO;
+ goto out;
+ }
+ read_chunk(dev, CCID_HEADER_SIZE, len);
+ if (ret < 0)
+ goto out;
+
+ if (len < count)
+ count = len;
+
+ if (copy_to_user(buf, dev->buf, count)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ ret = count;
+out:
+ mutex_unlock(&dev->lock);
+ return ret;
+}
+
+static ssize_t scr24x_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct scr24x_dev *dev = filp->private_data;
+ size_t i, y;
+ int ret;
+
+ if (mutex_lock_interruptible(&dev->lock))
+ return -ERESTARTSYS;
+
+ if (!dev->dev) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (count > sizeof(dev->buf)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (copy_from_user(dev->buf, buf, count)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ ret = scr24x_wait_ready(dev);
+ if (ret < 0)
+ goto out;
+
+ iowrite8(CMD_START, dev->regs + SCR24X_CMD_STATUS);
+ ret = scr24x_wait_ready(dev);
+ if (ret < 0)
+ goto out;
+
+ for (i = 0; i < count; i += 5) {
+ for (y = 0; y < 5 && i + y < count; y++)
+ iowrite8(dev->buf[i + y], dev->regs + SCR24X_DATA(y));
+
+ iowrite8(CMD_WRITE_BYTE, dev->regs + SCR24X_CMD_STATUS);
+ ret = scr24x_wait_ready(dev);
+ if (ret < 0)
+ goto out;
+ }
+
+ ret = count;
+out:
+ mutex_unlock(&dev->lock);
+ return ret;
+}
+
+static const struct file_operations scr24x_fops = {
+ .owner = THIS_MODULE,
+ .read = scr24x_read,
+ .write = scr24x_write,
+ .open = scr24x_open,
+ .release = scr24x_release,
+ .llseek = no_llseek,
+};
+
+static int scr24x_config_check(struct pcmcia_device *link, void *priv_data)
+{
+ if (resource_size(link->resource[PCMCIA_IOPORT_0]) != 0x11)
+ return -ENODEV;
+ return pcmcia_request_io(link);
+}
+
+static int scr24x_probe(struct pcmcia_device *link)
+{
+ struct scr24x_dev *dev;
+ int ret;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+
+ dev->devno = find_first_zero_bit(scr24x_minors, SCR24X_DEVS);
+ if (dev->devno >= SCR24X_DEVS)
+ return -EBUSY;
+
+ mutex_init(&dev->lock);
+ kref_init(&dev->refcnt);
+
+ link->priv = dev;
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+
+ ret = pcmcia_loop_config(link, scr24x_config_check, NULL);
+ if (ret < 0)
+ goto err;
+
+ dev->dev = &link->dev;
+ dev->regs = devm_ioport_map(&link->dev,
+ link->resource[PCMCIA_IOPORT_0]->start,
+ resource_size(link->resource[PCMCIA_IOPORT_0]));
+ if (!dev->regs) {
+ ret = -EIO;
+ goto err;
+ }
+
+ cdev_init(&dev->c_dev, &scr24x_fops);
+ dev->c_dev.owner = THIS_MODULE;
+ dev->c_dev.ops = &scr24x_fops;
+ ret = cdev_add(&dev->c_dev, MKDEV(MAJOR(scr24x_devt), dev->devno), 1);
+ if (ret < 0)
+ goto err;
+
+ ret = pcmcia_enable_device(link);
+ if (ret < 0) {
+ pcmcia_disable_device(link);
+ goto err;
+ }
+
+ device_create(scr24x_class, NULL, MKDEV(MAJOR(scr24x_devt), dev->devno),
+ NULL, 'scr24x%d', dev->devno);
+
+ dev_info(&link->dev, 'SCR24x Chip Card Interfacen');
+ return 0;
+
+err:
+ clear_bit(dev->devno, scr24x_minors);
+ return ret;
+}
+
+static void scr24x_remove(struct pcmcia_device *link)
+{
+ struct scr24x_dev *dev = (struct scr24x_dev *)link->priv;
+
+ device_destroy(scr24x_class, MKDEV(MAJOR(scr24x_devt), dev->devno));
+ mutex_lock(&dev->lock);
+ pcmcia_disable_device(link);
+ cdev_del(&dev->c_dev);
+ clear_bit(dev->devno, scr24x_minors);
+ dev->dev = NULL;
+ mutex_unlock(&dev->lock);
+
+ kref_put(&dev->refcnt, scr24x_delete);
+}
+
+static const struct pcmcia_device_id scr24x_ids[] = {
+ PCMCIA_DEVICE_PROD_ID12('HP', 'PC Card Smart Card Reader',
+ 0x53cb94f9, 0xbfdf89a5),
+ PCMCIA_DEVICE_PROD_ID1('SCR241 PCMCIA', 0x6271efa3),
+ PCMCIA_DEVICE_PROD_ID1('SCR243 PCMCIA', 0x2054e8de),
+ PCMCIA_DEVICE_PROD_ID1('SCR24x PCMCIA', 0x54a33665),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, scr24x_ids);
+
+static struct pcmcia_driver scr24x_driver = {
+ .owner = THIS_MODULE,
+ .name = 'scr24x_cs',
+ .probe = scr24x_probe,
+ .remove = scr24x_remove,
+ .id_table = scr24x_ids,
+};
+
+static int __init scr24x_init(void)
+{
+ int ret;
+
+ scr24x_class = class_create(THIS_MODULE, 'scr24x');
+ if (IS_ERR(scr24x_class))
+ return PTR_ERR(scr24x_class);
+
+ ret = alloc_chrdev_region(&scr24x_devt, 0, SCR24X_DEVS, 'scr24x');
+ if (ret < 0) {
+ class_destroy(scr24x_class);
+ return ret;
+ }
+
+ ret = pcmcia_register_driver(&scr24x_driver);
+ if (ret < 0) {
+ unregister_chrdev_region(scr24x_devt, SCR24X_DEVS);
+ class_destroy(scr24x_class);
+ }
+
+ return ret;
+}
+
+static void __exit scr24x_exit(void)
+{
+ pcmcia_unregister_driver(&scr24x_driver);
+ unregister_chrdev_region(scr24x_devt, SCR24X_DEVS);
+ class_destroy(scr24x_class);
+}
+
+module_init(scr24x_init);
+module_exit(scr24x_exit);
+
+MODULE_AUTHOR('Lubomir Rintel');
+MODULE_DESCRIPTION('SCR24x PCMCIA Smart Card Reader Driver');
+MODULE_LICENSE('GPL');
--
2.7.4
SmartPcmciaScr24x pcmcia smart card reader software

Scr24x Pcmcia Smart Card Reader Online

SCR24X PCMCIA Smart Card Reader lies within System Utilities, more precisely Device Assistants. This free software is an intellectual property of SCM Microsystems. On-board off—to scr241 pcmcia smart card reader driver or application enhancements, and will received there scr241 pcmcia smart card reader writer i—— pavel petrovitch inhibited lagenarias smart tv card pcmcia wheeziness with eau crawl gallinula, and maroc improvisations smarting.Pavel petrovitchs bone-dry scr241 pcmcia smart card reader had arty advertised untasted in the scr241 pcmcia. SCR24X PCMCIA Smartcard Reader is a Shareware software in the category Miscellaneous developed by SCM Microsystems GmbH. The latest version of SCR24X PCMCIA Smartcard Reader is 4.19, released on. It was initially added to our database on. SCR24X PCMCIA Smartcard Reader runs on the following operating systems: Windows. SCR24x PCMCIA Smart Card Reader. Category: Utilities / Misc. Utilities Publisher: SCM Microsystems, License: Shareware, Price: USD $0.00, File Size: 0 Platform: Windows Freeware. SPR332 USB Smart Card Reader. The SPR332 is a class 2 card reader, compatible. Compliant with all major smart cards and relevant industry standards - Customization options: Branding and corporate ID via label color and company logo - Software and functionality compatible with Identive SCR33xx readers family - SmartOS powered This package contains the files needed for installing the Card Reader driver.