/*
* USB Serial Converter driver
*
- * Copyright (C) 1999 - 2003 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 1999 - 2004 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2000 Peter Berger (pberger@brimson.com)
* Copyright (C) 2000 Al Borchers (borchers@steinerpoint.com)
*
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
-
-
-#ifdef CONFIG_USB_SERIAL_DEBUG
- static int debug = 1;
-#else
- static int debug;
-#endif
-
#include "usb-serial.h"
#include "pl2303.h"
#define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com, http://www.kroah.com/linux/"
#define DRIVER_DESC "USB Serial Driver core"
-
-#ifdef CONFIG_USB_SERIAL_GENERIC
-/* we want to look at all devices, as the vendor/product id can change
- * depending on the command line argument */
-static struct usb_device_id generic_serial_ids[] = {
- {.driver_info = 42},
- {}
-};
-
-#endif /* CONFIG_USB_SERIAL_GENERIC */
-
/* Driver structure we register with the USB core */
static struct usb_driver usb_serial_driver = {
.owner = THIS_MODULE,
.name = "usbserial",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
-#ifdef CONFIG_USB_SERIAL_GENERIC
- .id_table = generic_serial_ids,
-#endif
};
/* There is no MODULE_DEVICE_TABLE for usbserial.c. Instead
drivers depend on it.
*/
-static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */
+static int debug;
+static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */
static LIST_HEAD(usb_serial_driver_list);
-
struct usb_serial *usb_serial_get_by_index(unsigned index)
{
struct usb_serial *serial = serial_table[index];
}
if (good_spot == 0)
continue;
-
- serial->magic = USB_SERIAL_MAGIC;
+
*minor = i;
dbg("%s - minor base = %d", __FUNCTION__, *minor);
for (i = *minor; (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i)
return;
}
+static void destroy_serial(struct kref *kref)
+{
+ struct usb_serial *serial;
+ struct usb_serial_port *port;
+ int i;
+
+ serial = to_usb_serial(kref);
+
+ dbg ("%s - %s", __FUNCTION__, serial->type->name);
+
+ serial->type->shutdown(serial);
+
+ /* return the minor range that this device had */
+ return_serial(serial);
+
+ for (i = 0; i < serial->num_ports; ++i)
+ serial->port[i]->open_count = 0;
+
+ /* the ports are cleaned up and released in port_release() */
+ for (i = 0; i < serial->num_ports; ++i)
+ if (serial->port[i]->dev.parent != NULL) {
+ device_unregister(&serial->port[i]->dev);
+ serial->port[i] = NULL;
+ }
+
+ /* If this is a "fake" port, we have to clean it up here, as it will
+ * not get cleaned up in port_release() as it was never registered with
+ * the driver core */
+ if (serial->num_ports < serial->num_port_pointers) {
+ for (i = serial->num_ports; i < serial->num_port_pointers; ++i) {
+ port = serial->port[i];
+ if (!port)
+ continue;
+ if (port->read_urb) {
+ usb_unlink_urb(port->read_urb);
+ usb_free_urb(port->read_urb);
+ }
+ if (port->write_urb) {
+ usb_unlink_urb(port->write_urb);
+ usb_free_urb(port->write_urb);
+ }
+ if (port->interrupt_in_urb) {
+ usb_unlink_urb(port->interrupt_in_urb);
+ usb_free_urb(port->interrupt_in_urb);
+ }
+ kfree(port->bulk_in_buffer);
+ kfree(port->bulk_out_buffer);
+ kfree(port->interrupt_in_buffer);
+ }
+ }
+
+ usb_put_dev(serial->dev);
+
+ /* free up any memory that we allocated */
+ kfree (serial);
+}
+
/*****************************************************************************
* Driver tty interface functions
*****************************************************************************/
/* get the serial object associated with this tty pointer */
serial = usb_serial_get_by_index(tty->index);
-
- if (serial_paranoia_check (serial, __FUNCTION__))
- return -ENODEV;
+ if (!serial) {
+ retval = -ENODEV;
+ goto bailout;
+ }
/* set up our port structure making the tty driver remember our port object, and us it */
portNumber = tty->index - serial->minor;
if (retval) {
port->open_count = 0;
module_put(serial->type->owner);
- kref_put(&serial->kref);
+ kref_put(&serial->kref, destroy_serial);
}
}
bailout:
static void serial_close(struct tty_struct *tty, struct file * filp)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
- if (!serial)
+ if (!port)
return;
dbg("%s - port %d", __FUNCTION__, port->number);
}
module_put(port->serial->type->owner);
- kref_put(&port->serial->kref);
+ kref_put(&port->serial->kref, destroy_serial);
}
static int serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
int retval = -EINVAL;
- if (!serial)
- return -ENODEV;
-
dbg("%s - port %d, %d byte(s)", __FUNCTION__, port->number, count);
if (!port->open_count) {
}
/* pass on to the driver specific version of this function */
- retval = serial->type->write(port, from_user, buf, count);
+ retval = port->serial->type->write(port, from_user, buf, count);
exit:
return retval;
static int serial_write_room (struct tty_struct *tty)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
int retval = -EINVAL;
- if (!serial)
- return -ENODEV;
-
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port->open_count) {
}
/* pass on to the driver specific version of this function */
- retval = serial->type->write_room(port);
+ retval = port->serial->type->write_room(port);
exit:
return retval;
static int serial_chars_in_buffer (struct tty_struct *tty)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
int retval = -EINVAL;
- if (!serial)
- return -ENODEV;
-
dbg("%s = port %d", __FUNCTION__, port->number);
if (!port->open_count) {
}
/* pass on to the driver specific version of this function */
- retval = serial->type->chars_in_buffer(port);
+ retval = port->serial->type->chars_in_buffer(port);
exit:
return retval;
static void serial_throttle (struct tty_struct * tty)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
- if (!serial)
- return;
dbg("%s - port %d", __FUNCTION__, port->number);
}
/* pass on to the driver specific version of this function */
- if (serial->type->throttle)
- serial->type->throttle(port);
+ if (port->serial->type->throttle)
+ port->serial->type->throttle(port);
exit:
;
static void serial_unthrottle (struct tty_struct * tty)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
- if (!serial)
- return;
dbg("%s - port %d", __FUNCTION__, port->number);
}
/* pass on to the driver specific version of this function */
- if (serial->type->unthrottle)
- serial->type->unthrottle(port);
+ if (port->serial->type->unthrottle)
+ port->serial->type->unthrottle(port);
exit:
;
static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
int retval = -ENODEV;
- if (!serial)
- return -ENODEV;
-
dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
if (!port->open_count) {
}
/* pass on to the driver specific version of this function if it is available */
- if (serial->type->ioctl)
- retval = serial->type->ioctl(port, file, cmd, arg);
+ if (port->serial->type->ioctl)
+ retval = port->serial->type->ioctl(port, file, cmd, arg);
else
retval = -ENOIOCTLCMD;
static void serial_set_termios (struct tty_struct *tty, struct termios * old)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
- if (!serial)
- return;
dbg("%s - port %d", __FUNCTION__, port->number);
}
/* pass on to the driver specific version of this function if it is available */
- if (serial->type->set_termios)
- serial->type->set_termios(port, old);
+ if (port->serial->type->set_termios)
+ port->serial->type->set_termios(port, old);
exit:
;
static void serial_break (struct tty_struct *tty, int break_state)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
- if (!serial)
- return;
dbg("%s - port %d", __FUNCTION__, port->number);
}
/* pass on to the driver specific version of this function if it is available */
- if (serial->type->break_ctl)
- serial->type->break_ctl(port, break_state);
+ if (port->serial->type->break_ctl)
+ port->serial->type->break_ctl(port, break_state);
exit:
;
}
-static void serial_shutdown (struct usb_serial *serial)
-{
- dbg ("%s", __FUNCTION__);
-
- serial->type->shutdown(serial);
-}
-
static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data)
{
struct usb_serial *serial;
begin += length;
length = 0;
}
- kref_put(&serial->kref);
+ kref_put(&serial->kref, destroy_serial);
}
*eof = 1;
done:
static int serial_tiocmget (struct tty_struct *tty, struct file *file)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
- if (!serial)
- goto exit;
dbg("%s - port %d", __FUNCTION__, port->number);
goto exit;
}
- if (serial->type->tiocmget)
- return serial->type->tiocmget(port, file);
+ if (port->serial->type->tiocmget)
+ return port->serial->type->tiocmget(port, file);
exit:
return -EINVAL;
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
- if (!serial)
- goto exit;
dbg("%s - port %d", __FUNCTION__, port->number);
goto exit;
}
- if (serial->type->tiocmset)
- return serial->type->tiocmset(port, file, set, clear);
+ if (port->serial->type->tiocmset)
+ return port->serial->type->tiocmset(port, file, set, clear);
exit:
return -EINVAL;
void usb_serial_port_softint(void *private)
{
struct usb_serial_port *port = (struct usb_serial_port *)private;
- struct usb_serial *serial;
struct tty_struct *tty;
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port)
return;
- serial = get_usb_serial (port, __FUNCTION__);
- if (!serial)
- return;
-
tty = port->tty;
if (!tty)
return;
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
- dbg("%s - write wakeup call.", __FUNCTION__);
- (tty->ldisc.write_wakeup)(tty);
- }
-
- wake_up_interruptible(&tty->write_wait);
-}
-
-static void destroy_serial(struct kref *kref)
-{
- struct usb_serial *serial;
- struct usb_serial_port *port;
- int i;
-
- serial = to_usb_serial(kref);
-
- dbg ("%s - %s", __FUNCTION__, serial->type->name);
- serial_shutdown (serial);
-
- /* return the minor range that this device had */
- return_serial(serial);
-
- for (i = 0; i < serial->num_ports; ++i)
- serial->port[i]->open_count = 0;
-
- /* the ports are cleaned up and released in port_release() */
- for (i = 0; i < serial->num_ports; ++i)
- if (serial->port[i]->dev.parent != NULL) {
- device_unregister(&serial->port[i]->dev);
- serial->port[i] = NULL;
- }
-
- /* If this is a "fake" port, we have to clean it up here, as it will
- * not get cleaned up in port_release() as it was never registered with
- * the driver core */
- if (serial->num_ports < serial->num_port_pointers) {
- for (i = serial->num_ports; i < serial->num_port_pointers; ++i) {
- port = serial->port[i];
- if (!port)
- continue;
- if (port->read_urb) {
- usb_unlink_urb(port->read_urb);
- usb_free_urb(port->read_urb);
- }
- if (port->write_urb) {
- usb_unlink_urb(port->write_urb);
- usb_free_urb(port->write_urb);
- }
- if (port->interrupt_in_urb) {
- usb_unlink_urb(port->interrupt_in_urb);
- usb_free_urb(port->interrupt_in_urb);
- }
- kfree(port->bulk_in_buffer);
- kfree(port->bulk_out_buffer);
- kfree(port->interrupt_in_buffer);
- }
- }
-
- usb_put_dev(serial->dev);
-
- /* free up any memory that we allocated */
- kfree (serial);
+ tty_wakeup(tty);
}
static void port_release(struct device *dev)
serial->interface = interface;
serial->vendor = dev->descriptor.idVendor;
serial->product = dev->descriptor.idProduct;
- kref_init(&serial->kref, destroy_serial);
+ kref_init(&serial->kref);
return serial;
}
(dev->descriptor.idProduct == ATEN_PRODUCT_ID))) {
if (interface != dev->actconfig->interface[0]) {
/* check out the endpoints of the other interface*/
- iface_desc = &dev->actconfig->interface[0]->altsetting[0];
+ iface_desc = dev->actconfig->interface[0]->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
endpoint = &iface_desc->endpoint[i].desc;
if ((endpoint->bEndpointAddress & 0x80) &&
memset(port, 0x00, sizeof(struct usb_serial_port));
port->number = i + serial->minor;
port->serial = serial;
- port->magic = USB_SERIAL_PORT_MAGIC;
INIT_WORK(&port->work, usb_serial_port_softint, port);
serial->port[i] = port;
}
if (serial) {
/* let the last holder of this object
* cause it to be cleaned up */
- kref_put(&serial->kref);
+ kref_put(&serial->kref, destroy_serial);
}
dev_info(dev, "device disconnected\n");
}
void usb_serial_deregister(struct usb_serial_device_type *device)
{
- struct usb_serial *serial;
- int i;
-
info("USB Serial deregistering driver %s", device->name);
-
- /* clear out the serial_table if the device is attached to a port */
- for(i = 0; i < SERIAL_TTY_MINORS; ++i) {
- serial = serial_table[i];
- if ((serial != NULL) && (serial->type == device)) {
- usb_driver_release_interface (&usb_serial_driver, serial->interface);
- usb_serial_disconnect (serial->interface);
- }
- }
-
list_del(&device->driver_list);
- usb_serial_bus_deregister (device);
+ usb_serial_bus_deregister(device);
}
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");
-MODULE_PARM(debug, "i");
+module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
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