/*
* USB Serial Converter driver
*
- * Copyright (C) 1999 - 2004 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 1999 - 2005 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2000 Peter Berger (pberger@brimson.com)
* Copyright (C) 2000 Al Borchers (borchers@steinerpoint.com)
*
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
- * This driver was originally based on the ACM driver by Armin Fuerst (which was
+ * This driver was originally based on the ACM driver by Armin Fuerst (which was
* based on a driver by Brad Keryan)
*
* See Documentation/usb/usb-serial.txt for more information on using this driver
*
- * (12/10/2002) gkh
- * Split the ports off into their own struct device, and added a
- * usb-serial bus driver.
- *
- * (11/19/2002) gkh
- * removed a few #ifdefs for the generic code and cleaned up the failure
- * logic in initialization.
- *
- * (10/02/2002) gkh
- * moved the console code to console.c and out of this file.
- *
- * (06/05/2002) gkh
- * moved location of startup() call in serial_probe() until after all
- * of the port information and endpoints are initialized. This makes
- * things easier for some drivers.
- *
- * (04/10/2002) gkh
- * added serial_read_proc function which creates a
- * /proc/tty/driver/usb-serial file.
- *
- * (03/27/2002) gkh
- * Got USB serial console code working properly and merged into the main
- * version of the tree. Thanks to Randy Dunlap for the initial version
- * of this code, and for pushing me to finish it up.
- * The USB serial console works with any usb serial driver device.
- *
- * (03/21/2002) gkh
- * Moved all manipulation of port->open_count into the core. Now the
- * individual driver's open and close functions are called only when the
- * first open() and last close() is called. Making the drivers a bit
- * smaller and simpler.
- * Fixed a bug if a driver didn't have the owner field set.
- *
- * (02/26/2002) gkh
- * Moved all locking into the main serial_* functions, instead of having
- * the individual drivers have to grab the port semaphore. This should
- * reduce races.
- * Reworked the MOD_INC logic a bit to always increment and decrement, even
- * if the generic driver is being used.
- *
- * (10/10/2001) gkh
- * usb_serial_disconnect() now sets the serial->dev pointer is to NULL to
- * help prevent child drivers from accessing the device since it is now
- * gone.
- *
- * (09/13/2001) gkh
- * Moved generic driver initialize after we have registered with the USB
- * core. Thanks to Randy Dunlap for pointing this problem out.
- *
- * (07/03/2001) gkh
- * Fixed module paramater size. Thanks to John Brockmeyer for the pointer.
- * Fixed vendor and product getting defined through the MODULE_PARM macro
- * if the Generic driver wasn't compiled in.
- * Fixed problem with generic_shutdown() not being called for drivers that
- * don't have a shutdown() function.
- *
- * (06/06/2001) gkh
- * added evil hack that is needed for the prolific pl2303 device due to the
- * crazy way its endpoints are set up.
- *
- * (05/30/2001) gkh
- * switched from using spinlock to a semaphore, which fixes lots of problems.
- *
- * (04/08/2001) gb
- * Identify version on module load.
- *
- * 2001_02_05 gkh
- * Fixed buffer overflows bug with the generic serial driver. Thanks to
- * Todd Squires <squirest@ct0.com> for fixing this.
- *
- * (01/10/2001) gkh
- * Fixed bug where the generic serial adaptor grabbed _any_ device that was
- * offered to it.
- *
- * (12/12/2000) gkh
- * Removed MOD_INC and MOD_DEC from poll and disconnect functions, and
- * moved them to the serial_open and serial_close functions.
- * Also fixed bug with there not being a MOD_DEC for the generic driver
- * (thanks to Gary Brubaker for finding this.)
- *
- * (11/29/2000) gkh
- * Small NULL pointer initialization cleanup which saves a bit of disk image
- *
- * (11/01/2000) Adam J. Richter
- * instead of using idVendor/idProduct pairs, usb serial drivers
- * now identify their hardware interest with usb_device_id tables,
- * which they usually have anyhow for use with MODULE_DEVICE_TABLE.
- *
- * (10/05/2000) gkh
- * Fixed bug with urb->dev not being set properly, now that the usb
- * core needs it.
- *
- * (09/11/2000) gkh
- * Removed DEBUG #ifdefs with call to usb_serial_debug_data
- *
- * (08/28/2000) gkh
- * Added port_lock to port structure.
- * Added locks for SMP safeness to generic driver
- * Fixed the ability to open a generic device's port more than once.
- *
- * (07/23/2000) gkh
- * Added bulk_out_endpointAddress to port structure.
- *
- * (07/19/2000) gkh, pberger, and borchers
- * Modifications to allow usb-serial drivers to be modules.
- *
- * (07/03/2000) gkh
- * Added more debugging to serial_ioctl call
- *
- * (06/25/2000) gkh
- * Changed generic_write_bulk_callback to not call wake_up_interruptible
- * directly, but to have port_softint do it at a safer time.
- *
- * (06/23/2000) gkh
- * Cleaned up debugging statements in a quest to find UHCI timeout bug.
- *
- * (05/22/2000) gkh
- * Changed the makefile, enabling the big CONFIG_USB_SERIAL_SOMTHING to be
- * removed from the individual device source files.
- *
- * (05/03/2000) gkh
- * Added the Digi Acceleport driver from Al Borchers and Peter Berger.
- *
- * (05/02/2000) gkh
- * Changed devfs and tty register code to work properly now. This was based on
- * the ACM driver changes by Vojtech Pavlik.
- *
- * (04/27/2000) Ryan VanderBijl
- * Put calls to *_paranoia_checks into one function.
- *
- * (04/23/2000) gkh
- * Fixed bug that Randy Dunlap found for Generic devices with no bulk out ports.
- * Moved when the startup code printed out the devices that are supported.
- *
- * (04/19/2000) gkh
- * Added driver for ZyXEL omni.net lcd plus ISDN TA
- * Made startup info message specify which drivers were compiled in.
- *
- * (04/03/2000) gkh
- * Changed the probe process to remove the module unload races.
- * Changed where the tty layer gets initialized to have devfs work nicer.
- * Added initial devfs support.
- *
- * (03/26/2000) gkh
- * Split driver up into device specific pieces.
- *
- * (03/19/2000) gkh
- * Fixed oops that could happen when device was removed while a program
- * was talking to the device.
- * Removed the static urbs and now all urbs are created and destroyed
- * dynamically.
- * Reworked the internal interface. Now everything is based on the
- * usb_serial_port structure instead of the larger usb_serial structure.
- * This fixes the bug that a multiport device could not have more than
- * one port open at one time.
- *
- * (03/17/2000) gkh
- * Added config option for debugging messages.
- * Added patch for keyspan pda from Brian Warner.
- *
- * (03/06/2000) gkh
- * Added the keyspan pda code from Brian Warner <warner@lothar.com>
- * Moved a bunch of the port specific stuff into its own structure. This
- * is in anticipation of the true multiport devices (there's a bug if you
- * try to access more than one port of any multiport device right now)
- *
- * (02/21/2000) gkh
- * Made it so that any serial devices only have to specify which functions
- * they want to overload from the generic function calls (great,
- * inheritance in C, in a driver, just what I wanted...)
- * Added support for set_termios and ioctl function calls. No drivers take
- * advantage of this yet.
- * Removed the #ifdef MODULE, now there is no module specific code.
- * Cleaned up a few comments in usb-serial.h that were wrong (thanks again
- * to Miles Lott).
- * Small fix to get_free_serial.
- *
- * (02/14/2000) gkh
- * Removed the Belkin and Peracom functionality from the driver due to
- * the lack of support from the vendor, and me not wanting people to
- * accidenatly buy the device, expecting it to work with Linux.
- * Added read_bulk_callback and write_bulk_callback to the type structure
- * for the needs of the FTDI and WhiteHEAT driver.
- * Changed all reverences to FTDI to FTDI_SIO at the request of Bill
- * Ryder.
- * Changed the output urb size back to the max endpoint size to make
- * the ftdi_sio driver have it easier, and due to the fact that it didn't
- * really increase the speed any.
- *
- * (02/11/2000) gkh
- * Added VISOR_FUNCTION_CONSOLE to the visor startup function. This was a
- * patch from Miles Lott (milos@insync.net).
- * Fixed bug with not restoring the minor range that a device grabs, if
- * the startup function fails (thanks Miles for finding this).
- *
- * (02/05/2000) gkh
- * Added initial framework for the Keyspan PDA serial converter so that
- * Brian Warner has a place to put his code.
- * Made the ezusb specific functions generic enough that different
- * devices can use them (whiteheat and keyspan_pda both need them).
- * Split out a whole bunch of structure and other stuff to a separate
- * usb-serial.h file.
- * Made the Visor connection messages a little more understandable, now
- * that Miles Lott (milos@insync.net) has gotten the Generic channel to
- * work. Also made them always show up in the log file.
- *
- * (01/25/2000) gkh
- * Added initial framework for FTDI serial converter so that Bill Ryder
- * has a place to put his code.
- * Added the vendor specific info from Handspring. Now we can print out
- * informational debug messages as well as understand what is happening.
- *
- * (01/23/2000) gkh
- * Fixed problem of crash when trying to open a port that didn't have a
- * device assigned to it. Made the minor node finding a little smarter,
- * now it looks to find a continuous space for the new device.
- *
- * (01/21/2000) gkh
- * Fixed bug in visor_startup with patch from Miles Lott (milos@insync.net)
- * Fixed get_serial_by_minor which was all messed up for multi port
- * devices. Fixed multi port problem for generic devices. Now the number
- * of ports is determined by the number of bulk out endpoints for the
- * generic device.
- *
- * (01/19/2000) gkh
- * Removed lots of cruft that was around from the old (pre urb) driver
- * interface.
- * Made the serial_table dynamic. This should save lots of memory when
- * the number of minor nodes goes up to 256.
- * Added initial support for devices that have more than one port.
- * Added more debugging comments for the Visor, and added a needed
- * set_configuration call.
- *
- * (01/17/2000) gkh
- * Fixed the WhiteHEAT firmware (my processing tool had a bug)
- * and added new debug loader firmware for it.
- * Removed the put_char function as it isn't really needed.
- * Added visor startup commands as found by the Win98 dump.
- *
- * (01/13/2000) gkh
- * Fixed the vendor id for the generic driver to the one I meant it to be.
- *
- * (01/12/2000) gkh
- * Forget the version numbering...that's pretty useless...
- * Made the driver able to be compiled so that the user can select which
- * converter they want to use. This allows people who only want the Visor
- * support to not pay the memory size price of the WhiteHEAT.
- * Fixed bug where the generic driver (idVendor=0000 and idProduct=0000)
- * grabbed the root hub. Not good.
- *
- * version 0.4.0 (01/10/2000) gkh
- * Added whiteheat.h containing the firmware for the ConnectTech WhiteHEAT
- * device. Added startup function to allow firmware to be downloaded to
- * a device if it needs to be.
- * Added firmware download logic to the WhiteHEAT device.
- * Started to add #defines to split up the different drivers for potential
- * configuration option.
- *
- * version 0.3.1 (12/30/99) gkh
- * Fixed problems with urb for bulk out.
- * Added initial support for multiple sets of endpoints. This enables
- * the Handspring Visor to be attached successfully. Only the first
- * bulk in / bulk out endpoint pair is being used right now.
- *
- * version 0.3.0 (12/27/99) gkh
- * Added initial support for the Handspring Visor based on a patch from
- * Miles Lott (milos@sneety.insync.net)
- * Cleaned up the code a bunch and converted over to using urbs only.
- *
- * version 0.2.3 (12/21/99) gkh
- * Added initial support for the Connect Tech WhiteHEAT converter.
- * Incremented the number of ports in expectation of getting the
- * WhiteHEAT to work properly (4 ports per connection).
- * Added notification on insertion and removal of what port the
- * device is/was connected to (and what kind of device it was).
- *
- * version 0.2.2 (12/16/99) gkh
- * Changed major number to the new allocated number. We're legal now!
- *
- * version 0.2.1 (12/14/99) gkh
- * Fixed bug that happens when device node is opened when there isn't a
- * device attached to it. Thanks to marek@webdesign.no for noticing this.
- *
- * version 0.2.0 (11/10/99) gkh
- * Split up internals to make it easier to add different types of serial
- * converters to the code.
- * Added a "generic" driver that gets it's vendor and product id
- * from when the module is loaded. Thanks to David E. Nelson (dnelson@jump.net)
- * for the idea and sample code (from the usb scanner driver.)
- * Cleared up any licensing questions by releasing it under the GNU GPL.
- *
- * version 0.1.2 (10/25/99) gkh
- * Fixed bug in detecting device.
- *
- * version 0.1.1 (10/05/99) gkh
- * Changed the major number to not conflict with anything else.
- *
- * version 0.1 (09/28/99) gkh
- * Can recognize the two different devices and start up a read from
- * device when asked to. Writes also work. No control signals yet, this
- * all is vendor specific data (i.e. no spec), also no control for
- * different baud rates or other bit settings.
- * Currently we are using the same devid as the acm driver. This needs
- * to change.
- *
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
+#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
/*
* Version Information
*/
-#define DRIVER_VERSION "v2.0"
#define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com, http://www.kroah.com/linux/"
#define DRIVER_DESC "USB Serial Driver core"
/* 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,
+ .no_dynamic_id = 1,
};
/* There is no MODULE_DEVICE_TABLE for usbserial.c. Instead
good_spot = 1;
for (j = 1; j <= num_ports-1; ++j)
- if ((serial_table[i+j]) || (i+j >= SERIAL_TTY_MINORS)) {
+ if ((i+j >= SERIAL_TTY_MINORS) || (serial_table[i+j])) {
good_spot = 0;
i += j;
break;
return NULL;
}
-static void return_serial (struct usb_serial *serial)
+static void return_serial(struct usb_serial *serial)
{
int i;
for (i = 0; i < serial->num_ports; ++i) {
serial_table[serial->minor + i] = NULL;
}
-
- return;
}
static void destroy_serial(struct kref *kref)
serial = to_usb_serial(kref);
- dbg ("%s - %s", __FUNCTION__, serial->type->name);
+ dbg("%s - %s", __FUNCTION__, serial->type->description);
serial->type->shutdown(serial);
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);
- }
+ usb_kill_urb(port->read_urb);
+ usb_free_urb(port->read_urb);
+ usb_kill_urb(port->write_urb);
+ usb_free_urb(port->write_urb);
+ usb_kill_urb(port->interrupt_in_urb);
+ usb_free_urb(port->interrupt_in_urb);
+ usb_kill_urb(port->interrupt_out_urb);
+ usb_free_urb(port->interrupt_out_urb);
kfree(port->bulk_in_buffer);
kfree(port->bulk_out_buffer);
kfree(port->interrupt_in_buffer);
+ kfree(port->interrupt_out_buffer);
}
}
struct usb_serial *serial;
struct usb_serial_port *port;
unsigned int portNumber;
- int retval = 0;
+ int retval;
dbg("%s", __FUNCTION__);
- /* initialize the pointer incase something fails */
- tty->driver_data = NULL;
-
/* get the serial object associated with this tty pointer */
serial = usb_serial_get_by_index(tty->index);
if (!serial) {
- retval = -ENODEV;
- goto bailout;
+ tty->driver_data = NULL;
+ return -ENODEV;
}
- /* set up our port structure making the tty driver remember our port object, and us it */
portNumber = tty->index - serial->minor;
port = serial->port[portNumber];
- tty->driver_data = port;
-
- port->tty = tty;
-
- /* lock this module before we call it,
- this may, which means we must bail out, safe because we are called with BKL held */
- if (!try_module_get(serial->type->owner)) {
+ if (!port) {
retval = -ENODEV;
- goto bailout;
+ goto bailout_kref_put;
}
+ if (mutex_lock_interruptible(&port->mutex)) {
+ retval = -ERESTARTSYS;
+ goto bailout_kref_put;
+ }
+
++port->open_count;
+
if (port->open_count == 1) {
+
+ /* set up our port structure making the tty driver
+ * remember our port object, and us it */
+ tty->driver_data = port;
+ port->tty = tty;
+
+ /* lock this module before we call it
+ * this may fail, which means we must bail out,
+ * safe because we are called with BKL held */
+ if (!try_module_get(serial->type->driver.owner)) {
+ retval = -ENODEV;
+ goto bailout_mutex_unlock;
+ }
+
/* only call the device specific open if this
* is the first time the port is opened */
retval = serial->type->open(port, filp);
- if (retval) {
- port->open_count = 0;
- module_put(serial->type->owner);
- kref_put(&serial->kref, destroy_serial);
- }
+ if (retval)
+ goto bailout_module_put;
}
-bailout:
+
+ mutex_unlock(&port->mutex);
+ return 0;
+
+bailout_module_put:
+ module_put(serial->type->driver.owner);
+bailout_mutex_unlock:
+ port->open_count = 0;
+ mutex_unlock(&port->mutex);
+bailout_kref_put:
+ kref_put(&serial->kref, destroy_serial);
return retval;
}
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_port *port = tty->driver_data;
if (!port)
return;
dbg("%s - port %d", __FUNCTION__, port->number);
+ mutex_lock(&port->mutex);
+
+ if (port->open_count == 0) {
+ mutex_unlock(&port->mutex);
+ return;
+ }
+
--port->open_count;
- if (port->open_count <= 0) {
+ if (port->open_count == 0) {
/* only call the device specific close if this
* port is being closed by the last owner */
port->serial->type->close(port, filp);
- port->open_count = 0;
if (port->tty) {
if (port->tty->driver_data)
port->tty->driver_data = NULL;
port->tty = NULL;
}
+
+ module_put(port->serial->type->driver.owner);
}
- module_put(port->serial->type->owner);
+ mutex_unlock(&port->mutex);
kref_put(&port->serial->kref, destroy_serial);
}
-static int serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
+static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count)
{
- struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+ struct usb_serial_port *port = tty->driver_data;
int retval = -EINVAL;
+ if (!port)
+ goto exit;
+
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 = port->serial->type->write(port, from_user, buf, count);
+ retval = port->serial->type->write(port, 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_port *port = tty->driver_data;
int retval = -EINVAL;
+ if (!port)
+ goto exit;
+
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port->open_count) {
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_port *port = tty->driver_data;
int retval = -EINVAL;
+ if (!port)
+ goto exit;
+
dbg("%s = port %d", __FUNCTION__, port->number);
if (!port->open_count) {
static void serial_throttle (struct tty_struct * tty)
{
- struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+ struct usb_serial_port *port = tty->driver_data;
+
+ if (!port)
+ return;
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port->open_count) {
dbg ("%s - port not open", __FUNCTION__);
- goto exit;
+ return;
}
/* pass on to the driver specific version of this function */
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_port *port = tty->driver_data;
+
+ if (!port)
+ return;
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port->open_count) {
dbg("%s - port not open", __FUNCTION__);
- goto exit;
+ return;
}
/* pass on to the driver specific version of this function */
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_port *port = tty->driver_data;
int retval = -ENODEV;
+ if (!port)
+ goto exit;
+
dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
if (!port->open_count) {
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_port *port = tty->driver_data;
+
+ if (!port)
+ return;
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port->open_count) {
dbg("%s - port not open", __FUNCTION__);
- goto exit;
+ return;
}
/* pass on to the driver specific version of this function if it is available */
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_port *port = tty->driver_data;
+
+ if (!port)
+ return;
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port->open_count) {
dbg("%s - port not open", __FUNCTION__);
- goto exit;
+ return;
}
/* pass on to the driver specific version of this function if it is available */
if (port->serial->type->break_ctl)
port->serial->type->break_ctl(port, break_state);
-
-exit:
- ;
}
static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data)
char tmp[40];
dbg("%s", __FUNCTION__);
- length += sprintf (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION);
+ length += sprintf (page, "usbserinfo:1.0 driver:2.0\n");
for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) {
serial = usb_serial_get_by_index(i);
if (serial == NULL)
continue;
length += sprintf (page+length, "%d:", i);
- if (serial->type->owner)
- length += sprintf (page+length, " module:%s", module_name(serial->type->owner));
- length += sprintf (page+length, " name:\"%s\"", serial->type->name);
- length += sprintf (page+length, " vendor:%04x product:%04x", serial->vendor, serial->product);
+ if (serial->type->driver.owner)
+ length += sprintf (page+length, " module:%s", module_name(serial->type->driver.owner));
+ length += sprintf (page+length, " name:\"%s\"", serial->type->description);
+ length += sprintf (page+length, " vendor:%04x product:%04x",
+ le16_to_cpu(serial->dev->descriptor.idVendor),
+ le16_to_cpu(serial->dev->descriptor.idProduct));
length += sprintf (page+length, " num_ports:%d", serial->num_ports);
length += sprintf (page+length, " port:%d", i - serial->minor + 1);
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_port *port = tty->driver_data;
+
+ if (!port)
+ goto exit;
dbg("%s - port %d", __FUNCTION__, port->number);
static int serial_tiocmset (struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
+ struct usb_serial_port *port = tty->driver_data;
+
+ if (!port)
+ goto exit;
dbg("%s - port %d", __FUNCTION__, port->number);
void usb_serial_port_softint(void *private)
{
- struct usb_serial_port *port = (struct usb_serial_port *)private;
+ struct usb_serial_port *port = private;
struct tty_struct *tty;
dbg("%s - port %d", __FUNCTION__, port->number);
struct usb_serial_port *port = to_usb_serial_port(dev);
dbg ("%s - %s", __FUNCTION__, dev->bus_id);
- 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);
- }
+ usb_kill_urb(port->read_urb);
+ usb_free_urb(port->read_urb);
+ usb_kill_urb(port->write_urb);
+ usb_free_urb(port->write_urb);
+ usb_kill_urb(port->interrupt_in_urb);
+ usb_free_urb(port->interrupt_in_urb);
+ usb_kill_urb(port->interrupt_out_urb);
+ usb_free_urb(port->interrupt_out_urb);
kfree(port->bulk_in_buffer);
kfree(port->bulk_out_buffer);
kfree(port->interrupt_in_buffer);
+ kfree(port->interrupt_out_buffer);
kfree(port);
}
static struct usb_serial * create_serial (struct usb_device *dev,
struct usb_interface *interface,
- struct usb_serial_device_type *type)
+ struct usb_serial_driver *driver)
{
struct usb_serial *serial;
- serial = kmalloc (sizeof (*serial), GFP_KERNEL);
+ serial = kzalloc(sizeof(*serial), GFP_KERNEL);
if (!serial) {
dev_err(&dev->dev, "%s - out of memory\n", __FUNCTION__);
return NULL;
}
- memset (serial, 0, sizeof(*serial));
serial->dev = usb_get_dev(dev);
- serial->type = type;
+ serial->type = driver;
serial->interface = interface;
- serial->vendor = dev->descriptor.idVendor;
- serial->product = dev->descriptor.idProduct;
kref_init(&serial->kref);
return serial;
}
+static struct usb_serial_driver *search_serial_device(struct usb_interface *iface)
+{
+ struct list_head *p;
+ const struct usb_device_id *id;
+ struct usb_serial_driver *t;
+
+ /* Check if the usb id matches a known device */
+ list_for_each(p, &usb_serial_driver_list) {
+ t = list_entry(p, struct usb_serial_driver, driver_list);
+ id = usb_match_id(iface, t->id_table);
+ if (id != NULL) {
+ dbg("descriptor matches");
+ return t;
+ }
+ }
+
+ return NULL;
+}
+
int usb_serial_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
struct usb_endpoint_descriptor *interrupt_in_endpoint[MAX_NUM_PORTS];
+ struct usb_endpoint_descriptor *interrupt_out_endpoint[MAX_NUM_PORTS];
struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS];
struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS];
- struct usb_serial_device_type *type = NULL;
- struct list_head *tmp;
+ struct usb_serial_driver *type = NULL;
int retval;
- int found;
int minor;
int buffer_size;
int i;
int num_interrupt_in = 0;
+ int num_interrupt_out = 0;
int num_bulk_in = 0;
int num_bulk_out = 0;
int num_ports = 0;
int max_endpoints;
- const struct usb_device_id *id_pattern = NULL;
-
- /* loop through our list of known serial converters, and see if this
- device matches. */
- found = 0;
- list_for_each (tmp, &usb_serial_driver_list) {
- type = list_entry(tmp, struct usb_serial_device_type, driver_list);
- id_pattern = usb_match_id(interface, type->id_table);
- if (id_pattern != NULL) {
- dbg("descriptor matches");
- found = 1;
- break;
- }
- }
- if (!found) {
- /* no match */
+
+ type = search_serial_device(interface);
+ if (!type) {
dbg("none matched");
return -ENODEV;
}
serial = create_serial (dev, interface, type);
if (!serial) {
dev_err(&interface->dev, "%s - out of memory\n", __FUNCTION__);
- return -ENODEV;
+ return -ENOMEM;
}
/* if this device type has a probe function, call it */
if (type->probe) {
- if (!try_module_get(type->owner)) {
+ const struct usb_device_id *id;
+
+ if (!try_module_get(type->driver.owner)) {
dev_err(&interface->dev, "module get failed, exiting\n");
kfree (serial);
return -EIO;
}
- retval = type->probe (serial, id_pattern);
- module_put(type->owner);
+
+ id = usb_match_id(interface, type->id_table);
+ retval = type->probe(serial, id);
+ module_put(type->driver.owner);
if (retval) {
dbg ("sub driver rejected device");
if ((endpoint->bEndpointAddress & 0x80) &&
((endpoint->bmAttributes & 3) == 0x02)) {
/* we found a bulk in endpoint */
- dbg("found bulk in");
+ dbg("found bulk in on endpoint %d", i);
bulk_in_endpoint[num_bulk_in] = endpoint;
++num_bulk_in;
}
if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
((endpoint->bmAttributes & 3) == 0x02)) {
/* we found a bulk out endpoint */
- dbg("found bulk out");
+ dbg("found bulk out on endpoint %d", i);
bulk_out_endpoint[num_bulk_out] = endpoint;
++num_bulk_out;
}
if ((endpoint->bEndpointAddress & 0x80) &&
((endpoint->bmAttributes & 3) == 0x03)) {
/* we found a interrupt in endpoint */
- dbg("found interrupt in");
+ dbg("found interrupt in on endpoint %d", i);
interrupt_in_endpoint[num_interrupt_in] = endpoint;
++num_interrupt_in;
}
+
+ if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
+ ((endpoint->bmAttributes & 3) == 0x03)) {
+ /* we found an interrupt out endpoint */
+ dbg("found interrupt out on endpoint %d", i);
+ interrupt_out_endpoint[num_interrupt_out] = endpoint;
+ ++num_interrupt_out;
+ }
}
#if defined(CONFIG_USB_SERIAL_PL2303) || defined(CONFIG_USB_SERIAL_PL2303_MODULE)
/* BEGIN HORRIBLE HACK FOR PL2303 */
/* this is needed due to the looney way its endpoints are set up */
- if (((dev->descriptor.idVendor == PL2303_VENDOR_ID) &&
- (dev->descriptor.idProduct == PL2303_PRODUCT_ID)) ||
- ((dev->descriptor.idVendor == ATEN_VENDOR_ID) &&
- (dev->descriptor.idProduct == ATEN_PRODUCT_ID))) {
+ if (((le16_to_cpu(dev->descriptor.idVendor) == PL2303_VENDOR_ID) &&
+ (le16_to_cpu(dev->descriptor.idProduct) == PL2303_PRODUCT_ID)) ||
+ ((le16_to_cpu(dev->descriptor.idVendor) == ATEN_VENDOR_ID) &&
+ (le16_to_cpu(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]->cur_altsetting;
#endif
/* found all that we need */
- dev_info(&interface->dev, "%s converter detected\n", type->name);
+ dev_info(&interface->dev, "%s converter detected\n", type->description);
#ifdef CONFIG_USB_SERIAL_GENERIC
if (type == &usb_serial_generic_device) {
if (!num_ports) {
/* if this device type has a calc_num_ports function, call it */
if (type->calc_num_ports) {
- if (!try_module_get(type->owner)) {
+ if (!try_module_get(type->driver.owner)) {
dev_err(&interface->dev, "module get failed, exiting\n");
kfree (serial);
return -EIO;
}
num_ports = type->calc_num_ports (serial);
- module_put(type->owner);
+ module_put(type->driver.owner);
}
if (!num_ports)
num_ports = type->num_ports;
serial->num_bulk_in = num_bulk_in;
serial->num_bulk_out = num_bulk_out;
serial->num_interrupt_in = num_interrupt_in;
+ serial->num_interrupt_out = num_interrupt_out;
/* create our ports, we need as many as the max endpoints */
/* we don't use num_ports here cauz some devices have more endpoint pairs than ports */
max_endpoints = max(num_bulk_in, num_bulk_out);
max_endpoints = max(max_endpoints, num_interrupt_in);
+ max_endpoints = max(max_endpoints, num_interrupt_out);
max_endpoints = max(max_endpoints, (int)serial->num_ports);
serial->num_port_pointers = max_endpoints;
dbg("%s - setting up %d port structures for this device", __FUNCTION__, max_endpoints);
for (i = 0; i < max_endpoints; ++i) {
- port = kmalloc(sizeof(struct usb_serial_port), GFP_KERNEL);
+ port = kzalloc(sizeof(struct usb_serial_port), GFP_KERNEL);
if (!port)
goto probe_error;
- memset(port, 0x00, sizeof(struct usb_serial_port));
port->number = i + serial->minor;
port->serial = serial;
+ spin_lock_init(&port->lock);
+ mutex_init(&port->mutex);
INIT_WORK(&port->work, usb_serial_port_softint, port);
serial->port[i] = port;
}
dev_err(&interface->dev, "No free urbs available\n");
goto probe_error;
}
- buffer_size = endpoint->wMaxPacketSize;
+ buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ port->bulk_in_size = buffer_size;
port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
if (!port->bulk_in_buffer) {
dev_err(&interface->dev, "No free urbs available\n");
goto probe_error;
}
- buffer_size = endpoint->wMaxPacketSize;
+ buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
port->bulk_out_size = buffer_size;
port->bulk_out_endpointAddress = endpoint->bEndpointAddress;
port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL);
port);
}
- for (i = 0; i < num_interrupt_in; ++i) {
- endpoint = interrupt_in_endpoint[i];
- port = serial->port[i];
- port->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!port->interrupt_in_urb) {
- dev_err(&interface->dev, "No free urbs available\n");
- goto probe_error;
+ if (serial->type->read_int_callback) {
+ for (i = 0; i < num_interrupt_in; ++i) {
+ endpoint = interrupt_in_endpoint[i];
+ port = serial->port[i];
+ port->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!port->interrupt_in_urb) {
+ dev_err(&interface->dev, "No free urbs available\n");
+ goto probe_error;
+ }
+ buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ port->interrupt_in_endpointAddress = endpoint->bEndpointAddress;
+ port->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
+ if (!port->interrupt_in_buffer) {
+ dev_err(&interface->dev, "Couldn't allocate interrupt_in_buffer\n");
+ goto probe_error;
+ }
+ usb_fill_int_urb (port->interrupt_in_urb, dev,
+ usb_rcvintpipe (dev,
+ endpoint->bEndpointAddress),
+ port->interrupt_in_buffer, buffer_size,
+ serial->type->read_int_callback, port,
+ endpoint->bInterval);
}
- buffer_size = endpoint->wMaxPacketSize;
- port->interrupt_in_endpointAddress = endpoint->bEndpointAddress;
- port->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
- if (!port->interrupt_in_buffer) {
- dev_err(&interface->dev, "Couldn't allocate interrupt_in_buffer\n");
- goto probe_error;
+ } else if (num_interrupt_in) {
+ dbg("the device claims to support interrupt in transfers, but read_int_callback is not defined");
+ }
+
+ if (serial->type->write_int_callback) {
+ for (i = 0; i < num_interrupt_out; ++i) {
+ endpoint = interrupt_out_endpoint[i];
+ port = serial->port[i];
+ port->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!port->interrupt_out_urb) {
+ dev_err(&interface->dev, "No free urbs available\n");
+ goto probe_error;
+ }
+ buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ port->interrupt_out_size = buffer_size;
+ port->interrupt_out_endpointAddress = endpoint->bEndpointAddress;
+ port->interrupt_out_buffer = kmalloc (buffer_size, GFP_KERNEL);
+ if (!port->interrupt_out_buffer) {
+ dev_err(&interface->dev, "Couldn't allocate interrupt_out_buffer\n");
+ goto probe_error;
+ }
+ usb_fill_int_urb (port->interrupt_out_urb, dev,
+ usb_sndintpipe (dev,
+ endpoint->bEndpointAddress),
+ port->interrupt_out_buffer, buffer_size,
+ serial->type->write_int_callback, port,
+ endpoint->bInterval);
}
- usb_fill_int_urb (port->interrupt_in_urb, dev,
- usb_rcvintpipe (dev,
- endpoint->bEndpointAddress),
- port->interrupt_in_buffer, buffer_size,
- serial->type->read_int_callback, port,
- endpoint->bInterval);
+ } else if (num_interrupt_out) {
+ dbg("the device claims to support interrupt out transfers, but write_int_callback is not defined");
}
-
+
/* if this device type has an attach function, call it */
if (type->attach) {
- if (!try_module_get(type->owner)) {
+ if (!try_module_get(type->driver.owner)) {
dev_err(&interface->dev, "module get failed, exiting\n");
goto probe_error;
}
retval = type->attach (serial);
- module_put(type->owner);
+ module_put(type->driver.owner);
if (retval < 0)
goto probe_error;
if (retval > 0) {
usb_free_urb (port->interrupt_in_urb);
kfree(port->interrupt_in_buffer);
}
+ for (i = 0; i < num_interrupt_out; ++i) {
+ port = serial->port[i];
+ if (!port)
+ continue;
+ if (port->interrupt_out_urb)
+ usb_free_urb (port->interrupt_out_urb);
+ kfree(port->interrupt_out_buffer);
+ }
/* return the minor range that this device had */
return_serial (serial);
void usb_serial_disconnect(struct usb_interface *interface)
{
+ int i;
struct usb_serial *serial = usb_get_intfdata (interface);
struct device *dev = &interface->dev;
+ struct usb_serial_port *port;
dbg ("%s", __FUNCTION__);
usb_set_intfdata (interface, NULL);
if (serial) {
+ for (i = 0; i < serial->num_ports; ++i) {
+ port = serial->port[i];
+ if (port && port->tty)
+ tty_hangup(port->tty);
+ }
/* let the last holder of this object
* cause it to be cleaned up */
kref_put(&serial->kref, destroy_serial);
static int __init usb_serial_init(void)
{
int i;
- int result = 0;
+ int result;
usb_serial_tty_driver = alloc_tty_driver(SERIAL_TTY_MINORS);
if (!usb_serial_tty_driver)
serial_table[i] = NULL;
}
- bus_register(&usb_serial_bus_type);
-
- /* register the generic driver, if we should */
- result = usb_serial_generic_register(debug);
- if (result < 0) {
- err("%s - registering generic driver failed", __FUNCTION__);
- goto exit;
+ result = bus_register(&usb_serial_bus_type);
+ if (result) {
+ err("%s - registering bus driver failed", __FUNCTION__);
+ goto exit_bus;
}
usb_serial_tty_driver->owner = THIS_MODULE;
result = tty_register_driver(usb_serial_tty_driver);
if (result) {
err("%s - tty_register_driver failed", __FUNCTION__);
- goto exit_generic;
+ goto exit_reg_driver;
}
/* register the USB driver */
goto exit_tty;
}
- info(DRIVER_DESC " " DRIVER_VERSION);
+ /* register the generic driver, if we should */
+ result = usb_serial_generic_register(debug);
+ if (result < 0) {
+ err("%s - registering generic driver failed", __FUNCTION__);
+ goto exit_generic;
+ }
+
+ info(DRIVER_DESC);
return result;
+exit_generic:
+ usb_deregister(&usb_serial_driver);
+
exit_tty:
tty_unregister_driver(usb_serial_tty_driver);
-exit_generic:
- usb_serial_generic_deregister();
+exit_reg_driver:
+ bus_unregister(&usb_serial_bus_type);
-exit:
+exit_bus:
err ("%s - returning with error %d", __FUNCTION__, result);
put_tty_driver(usb_serial_tty_driver);
return result;
} \
} while (0)
-static void fixup_generic(struct usb_serial_device_type *device)
+static void fixup_generic(struct usb_serial_driver *device)
{
set_to_generic_if_null(device, open);
set_to_generic_if_null(device, write);
set_to_generic_if_null(device, shutdown);
}
-int usb_serial_register(struct usb_serial_device_type *new_device)
+int usb_serial_register(struct usb_serial_driver *driver)
{
int retval;
- fixup_generic(new_device);
-
- /* Add this device to our list of devices */
- list_add(&new_device->driver_list, &usb_serial_driver_list);
-
- retval = usb_serial_bus_register (new_device);
+ fixup_generic(driver);
- if (retval)
- goto error;
+ if (!driver->description)
+ driver->description = driver->driver.name;
- info("USB Serial support registered for %s", new_device->name);
+ /* Add this device to our list of devices */
+ list_add(&driver->driver_list, &usb_serial_driver_list);
- return retval;
-error:
- err("problem %d when registering driver %s", retval, new_device->name);
- list_del(&new_device->driver_list);
+ retval = usb_serial_bus_register(driver);
+ if (retval) {
+ err("problem %d when registering driver %s", retval, driver->description);
+ list_del(&driver->driver_list);
+ }
+ else
+ info("USB Serial support registered for %s", driver->description);
return retval;
}
-void usb_serial_deregister(struct usb_serial_device_type *device)
+void usb_serial_deregister(struct usb_serial_driver *device)
{
- info("USB Serial deregistering driver %s", device->name);
+ info("USB Serial deregistering driver %s", device->description);
list_del(&device->driver_list);
usb_serial_bus_deregister(device);
}
/* If the usb-serial core is built into the core, the usb-serial drivers
need these symbols to load properly as modules. */
-EXPORT_SYMBOL(usb_serial_register);
-EXPORT_SYMBOL(usb_serial_deregister);
-EXPORT_SYMBOL(usb_serial_probe);
-EXPORT_SYMBOL(usb_serial_disconnect);
-EXPORT_SYMBOL(usb_serial_port_softint);
+EXPORT_SYMBOL_GPL(usb_serial_register);
+EXPORT_SYMBOL_GPL(usb_serial_deregister);
+EXPORT_SYMBOL_GPL(usb_serial_probe);
+EXPORT_SYMBOL_GPL(usb_serial_disconnect);
+EXPORT_SYMBOL_GPL(usb_serial_port_softint);
/* Module information */
git://git.onelab.eu / linux-2.6.git / blobdiff