| 1,1476 → 1,1477 |
|---|
| /* |
| * USB Serial Converter driver |
| * |
| * Copyright (C) 1999 - 2003 Greg Kroah-Hartman (greg@kroah.com) |
| * Copyright (C) 2000 Peter Berger (pberger@brimson.com) |
| * Copyright (C) 2000 Al Borchers (borchers@steinerpoint.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * 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 |
| * 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 <linuxcomp.h> |
| |
| #include <linux/config.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/tty.h> |
| #include <linux/tty_driver.h> |
| #include <linux/tty_flip.h> |
| #include <linux/module.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" |
| |
| /* |
| * 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" |
| |
| |
| #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 |
| the MODULE_DEVICE_TABLE declarations in each serial driver |
| cause the "hotplug" program to pull in whatever module is necessary |
| via modprobe, and modprobe will load usbserial because the serial |
| drivers depend on it. |
| */ |
| |
| 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 (serial) |
| kobject_get (&serial->kobj); |
| return serial; |
| } |
| |
| static struct usb_serial *get_free_serial (struct usb_serial *serial, int num_ports, unsigned int *minor) |
| { |
| unsigned int i, j; |
| int good_spot; |
| |
| dbg("%s %d", __FUNCTION__, num_ports); |
| |
| *minor = 0; |
| for (i = 0; i < SERIAL_TTY_MINORS; ++i) { |
| if (serial_table[i]) |
| continue; |
| |
| good_spot = 1; |
| for (j = 1; j <= num_ports-1; ++j) |
| if ((serial_table[i+j]) || (i+j >= SERIAL_TTY_MINORS)) { |
| good_spot = 0; |
| i += j; |
| break; |
| } |
| 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) |
| serial_table[i] = serial; |
| return serial; |
| } |
| return NULL; |
| } |
| |
| static void return_serial (struct usb_serial *serial) |
| { |
| int i; |
| |
| dbg("%s", __FUNCTION__); |
| |
| if (serial == NULL) |
| return; |
| |
| for (i = 0; i < serial->num_ports; ++i) { |
| serial_table[serial->minor + i] = NULL; |
| } |
| |
| return; |
| } |
| |
| /***************************************************************************** |
| * Driver tty interface functions |
| *****************************************************************************/ |
| /*static*/ int serial_open (struct tty_struct *tty, struct file * filp) |
| { |
| struct usb_serial *serial; |
| struct usb_serial_port *port; |
| unsigned int portNumber; |
| int retval = 0; |
| |
| 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_paranoia_check (serial, __FUNCTION__)) |
| 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)) { |
| retval = -ENODEV; |
| goto bailout; |
| } |
| |
| ++port->open_count; |
| if (port->open_count == 1) { |
| /* 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); |
| kobject_put(&serial->kobj); |
| } |
| } |
| bailout: |
| 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 *serial = get_usb_serial (port, __FUNCTION__); |
| |
| if (!serial) |
| return; |
| |
| dbg("%s - port %d", __FUNCTION__, port->number); |
| |
| --port->open_count; |
| 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->owner); |
| kobject_put(&port->serial->kobj); |
| } |
| |
| /*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) { |
| dbg("%s - port not opened", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| retval = 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) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| retval = 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) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| retval = 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); |
| |
| if (!port->open_count) { |
| dbg ("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| if (serial->type->throttle) |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| if (serial->type->unthrottle) |
| 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) { |
| dbg ("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* 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); |
| else |
| retval = -ENOIOCTLCMD; |
| |
| exit: |
| return retval; |
| } |
| |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* 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); |
| |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* 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); |
| |
| 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; |
| int length = 0; |
| int i; |
| off_t begin = 0; |
| char tmp[40]; |
| |
| dbg("%s", __FUNCTION__); |
| length += sprintf26 (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION); |
| for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) { |
| serial = usb_serial_get_by_index(i); |
| if (serial == NULL) |
| continue; |
| |
| length += sprintf26 (page+length, "%d:", i); |
| if (serial->type->owner) |
| length += sprintf26 (page+length, " module:%s", module_name(serial->type->owner)); |
| length += sprintf26 (page+length, " name:\"%s\"", serial->type->name); |
| length += sprintf26 (page+length, " vendor:%04x product:%04x", serial->vendor, serial->product); |
| length += sprintf26 (page+length, " num_ports:%d", serial->num_ports); |
| length += sprintf26 (page+length, " port:%d", i - serial->minor + 1); |
| |
| usb_make_path(serial->dev, tmp, sizeof(tmp)); |
| length += sprintf26 (page+length, " path:%s", tmp); |
| |
| length += sprintf26 (page+length, "\n"); |
| if ((length + begin) > (off + count)) |
| goto done; |
| if ((length + begin) < off) { |
| begin += length; |
| length = 0; |
| } |
| kobject_put(&serial->kobj); |
| } |
| *eof = 1; |
| done: |
| if (off >= (length + begin)) |
| return 0; |
| *start = page + (off-begin); |
| return ((count < begin+length-off) ? count : begin+length-off); |
| } |
| |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| if (serial->type->tiocmget) |
| return serial->type->tiocmget(port, file); |
| |
| exit: |
| return -EINVAL; |
| } |
| |
| 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 *serial = get_usb_serial (port, __FUNCTION__); |
| |
| if (!serial) |
| goto exit; |
| |
| dbg("%s - port %d", __FUNCTION__, port->number); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| if (serial->type->tiocmset) |
| return 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 kobject *kobj) |
| { |
| struct usb_serial *serial; |
| struct usb_serial_port *port; |
| int i; |
| |
| dbg ("%s - %s", __FUNCTION__, kobj->name); |
| |
| serial = to_usb_serial(kobj); |
| 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); |
| } |
| |
| static struct kobj_type usb_serial_kobj_type = { |
| .release = destroy_serial, |
| }; |
| |
| static void port_release(struct device *dev) |
| { |
| 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); |
| } |
| kfree(port->bulk_in_buffer); |
| kfree(port->bulk_out_buffer); |
| kfree(port->interrupt_in_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 *serial; |
| |
| serial = kmalloc (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->interface = interface; |
| serial->vendor = dev->descriptor.idVendor; |
| serial->product = dev->descriptor.idProduct; |
| |
| /* initialize the kobject portion of the usb_device */ |
| kobject_init(&serial->kobj); |
| serial->kobj.ktype = &usb_serial_kobj_type; |
| |
| return serial; |
| } |
| |
| int usb_serial_probe(struct usb_interface *interface, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *dev = interface_to_usbdev (interface); |
| struct usb_serial *serial = NULL; |
| struct usb_serial_port *port; |
| 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 *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; |
| int retval; |
| int found; |
| int minor; |
| int buffer_size; |
| int i; |
| int num_interrupt_in = 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 */ |
| 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; |
| } |
| |
| /* if this device type has a probe function, call it */ |
| if (type->probe) { |
| if (!try_module_get(type->owner)) { |
| dev_err(&interface->dev, "module get failed, exiting\n"); |
| kfree (serial); |
| return -EIO; |
| } |
| retval = type->probe (serial, id_pattern); |
| module_put(type->owner); |
| |
| if (retval) { |
| dbg ("sub driver rejected device"); |
| kfree (serial); |
| return retval; |
| } |
| } |
| |
| /* descriptor matches, let's find the endpoints needed */ |
| /* check out the endpoints */ |
| iface_desc = &interface->altsetting[0]; |
| for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| endpoint = &iface_desc->endpoint[i].desc; |
| |
| if ((endpoint->bEndpointAddress & 0x80) && |
| ((endpoint->bmAttributes & 3) == 0x02)) { |
| /* we found a bulk in endpoint */ |
| dbg("found bulk in"); |
| 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"); |
| 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"); |
| interrupt_in_endpoint[num_interrupt_in] = endpoint; |
| ++num_interrupt_in; |
| } |
| } |
| |
| #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 (interface != dev->actconfig->interface[0]) { |
| /* check out the endpoints of the other interface*/ |
| iface_desc = &dev->actconfig->interface[0]->altsetting[0]; |
| for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| endpoint = &iface_desc->endpoint[i].desc; |
| if ((endpoint->bEndpointAddress & 0x80) && |
| ((endpoint->bmAttributes & 3) == 0x03)) { |
| /* we found a interrupt in endpoint */ |
| dbg("found interrupt in for Prolific device on separate interface"); |
| interrupt_in_endpoint[num_interrupt_in] = endpoint; |
| ++num_interrupt_in; |
| } |
| } |
| } |
| |
| /* Now make sure the PL-2303 is configured correctly. |
| * If not, give up now and hope this hack will work |
| * properly during a later invocation of usb_serial_probe |
| */ |
| if (num_bulk_in == 0 || num_bulk_out == 0) { |
| dev_info(&interface->dev, "PL-2303 hack: descriptors matched but endpoints did not\n"); |
| kfree (serial); |
| return -ENODEV; |
| } |
| } |
| /* END HORRIBLE HACK FOR PL2303 */ |
| #endif |
| |
| /* found all that we need */ |
| dev_info(&interface->dev, "%s converter detected\n", type->name); |
| |
| #ifdef CONFIG_USB_SERIAL_GENERIC |
| if (type == &usb_serial_generic_device) { |
| num_ports = num_bulk_out; |
| if (num_ports == 0) { |
| dev_err(&interface->dev, "Generic device with no bulk out, not allowed.\n"); |
| kfree (serial); |
| return -EIO; |
| } |
| } |
| #endif |
| 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)) { |
| dev_err(&interface->dev, "module get failed, exiting\n"); |
| kfree (serial); |
| return -EIO; |
| } |
| num_ports = type->calc_num_ports (serial); |
| module_put(type->owner); |
| } |
| if (!num_ports) |
| num_ports = type->num_ports; |
| } |
| |
| if (get_free_serial (serial, num_ports, &minor) == NULL) { |
| dev_err(&interface->dev, "No more free serial devices\n"); |
| kfree (serial); |
| return -ENOMEM; |
| } |
| |
| serial->minor = minor; |
| serial->num_ports = num_ports; |
| serial->num_bulk_in = num_bulk_in; |
| serial->num_bulk_out = num_bulk_out; |
| serial->num_interrupt_in = num_interrupt_in; |
| |
| /* 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, (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); |
| if (!port) |
| goto probe_error; |
| 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; |
| } |
| |
| /* set up the endpoint information */ |
| for (i = 0; i < num_bulk_in; ++i) { |
| endpoint = bulk_in_endpoint[i]; |
| port = serial->port[i]; |
| port->read_urb = usb_alloc_urb (0, GFP_KERNEL); |
| if (!port->read_urb) { |
| dev_err(&interface->dev, "No free urbs available\n"); |
| goto probe_error; |
| } |
| buffer_size = endpoint->wMaxPacketSize; |
| |
| port->bulk_in_endpointAddress = endpoint->bEndpointAddress; |
| port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL); |
| if (!port->bulk_in_buffer) { |
| dev_err(&interface->dev, "Couldn't allocate bulk_in_buffer\n"); |
| goto probe_error; |
| } |
| usb_fill_bulk_urb (port->read_urb, dev, |
| usb_rcvbulkpipe (dev, |
| endpoint->bEndpointAddress), |
| port->bulk_in_buffer, buffer_size, |
| serial->type->read_bulk_callback, |
| port); |
| } |
| |
| for (i = 0; i < num_bulk_out; ++i) { |
| endpoint = bulk_out_endpoint[i]; |
| port = serial->port[i]; |
| port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!port->write_urb) { |
| dev_err(&interface->dev, "No free urbs available\n"); |
| goto probe_error; |
| } |
| buffer_size = endpoint->wMaxPacketSize; |
| port->bulk_out_size = buffer_size; |
| port->bulk_out_endpointAddress = endpoint->bEndpointAddress; |
| port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL); |
| if (!port->bulk_out_buffer) { |
| dev_err(&interface->dev, "Couldn't allocate bulk_out_buffer\n"); |
| goto probe_error; |
| } |
| usb_fill_bulk_urb (port->write_urb, dev, |
| usb_sndbulkpipe (dev, |
| endpoint->bEndpointAddress), |
| port->bulk_out_buffer, buffer_size, |
| serial->type->write_bulk_callback, |
| 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; |
| } |
| 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; |
| } |
| 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); |
| } |
| |
| /* if this device type has an attach function, call it */ |
| if (type->attach) { |
| if (!try_module_get(type->owner)) { |
| dev_err(&interface->dev, "module get failed, exiting\n"); |
| goto probe_error; |
| } |
| retval = type->attach (serial); |
| module_put(type->owner); |
| if (retval < 0) |
| goto probe_error; |
| if (retval > 0) { |
| /* quietly accept this device, but don't bind to a serial port |
| * as it's about to disappear */ |
| goto exit; |
| } |
| } |
| |
| /* register all of the individual ports with the driver core */ |
| for (i = 0; i < num_ports; ++i) { |
| port = serial->port[i]; |
| port->dev.parent = &interface->dev; |
| port->dev.driver = NULL; |
| port->dev.bus = &usb_serial_bus_type; |
| port->dev.release = &port_release; |
| |
| snprintf26(&port->dev.bus_id[0], sizeof(port->dev.bus_id), "ttyUSB%d", port->number); |
| dbg ("%s - registering %s", __FUNCTION__, port->dev.bus_id); |
| device_register (&port->dev); |
| } |
| |
| usb_serial_console_init (debug, minor); |
| |
| exit: |
| /* success */ |
| usb_set_intfdata (interface, serial); |
| return 0; |
| |
| probe_error: |
| for (i = 0; i < num_bulk_in; ++i) { |
| port = serial->port[i]; |
| if (!port) |
| continue; |
| if (port->read_urb) |
| usb_free_urb (port->read_urb); |
| kfree(port->bulk_in_buffer); |
| } |
| for (i = 0; i < num_bulk_out; ++i) { |
| port = serial->port[i]; |
| if (!port) |
| continue; |
| if (port->write_urb) |
| usb_free_urb (port->write_urb); |
| kfree(port->bulk_out_buffer); |
| } |
| for (i = 0; i < num_interrupt_in; ++i) { |
| port = serial->port[i]; |
| if (!port) |
| continue; |
| if (port->interrupt_in_urb) |
| usb_free_urb (port->interrupt_in_urb); |
| kfree(port->interrupt_in_buffer); |
| } |
| |
| /* return the minor range that this device had */ |
| return_serial (serial); |
| |
| /* free up any memory that we allocated */ |
| for (i = 0; i < serial->num_port_pointers; ++i) |
| kfree(serial->port[i]); |
| kfree (serial); |
| return -EIO; |
| } |
| |
| void usb_serial_disconnect(struct usb_interface *interface) |
| { |
| struct usb_serial *serial = usb_get_intfdata (interface); |
| struct device *dev = &interface->dev; |
| |
| dbg ("%s", __FUNCTION__); |
| |
| usb_set_intfdata (interface, NULL); |
| if (serial) { |
| /* let the last holder of this object |
| * cause it to be cleaned up */ |
| kobject_put (&serial->kobj); |
| } |
| dev_info(dev, "device disconnected\n"); |
| } |
| |
| static struct tty_operations serial_ops = { |
| .open = serial_open, |
| .close = serial_close, |
| .write = serial_write, |
| .write_room = serial_write_room, |
| .ioctl = serial_ioctl, |
| .set_termios = serial_set_termios, |
| .throttle = serial_throttle, |
| .unthrottle = serial_unthrottle, |
| .break_ctl = serial_break, |
| .chars_in_buffer = serial_chars_in_buffer, |
| .read_proc = serial_read_proc, |
| .tiocmget = serial_tiocmget, |
| .tiocmset = serial_tiocmset, |
| }; |
| |
| struct tty_driver *usb_serial_tty_driver; |
| |
| /*static*/ int __init usb_serial_init(void) |
| { |
| int i; |
| int result = 0; |
| |
| usb_serial_tty_driver = alloc_tty_driver(SERIAL_TTY_MINORS); |
| if (!usb_serial_tty_driver) |
| return -ENOMEM; |
| |
| /* Initialize our global data */ |
| for (i = 0; i < SERIAL_TTY_MINORS; ++i) { |
| 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; |
| } |
| |
| usb_serial_tty_driver->owner = THIS_MODULE; |
| usb_serial_tty_driver->driver_name = "usbserial"; |
| usb_serial_tty_driver->devfs_name = "usb/tts/"; |
| usb_serial_tty_driver->name = "ttyUSB"; |
| usb_serial_tty_driver->major = SERIAL_TTY_MAJOR; |
| usb_serial_tty_driver->minor_start = 0; |
| usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL; |
| usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; |
| usb_serial_tty_driver->init_termios = tty_std_termios; |
| usb_serial_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| tty_set_operations(usb_serial_tty_driver, &serial_ops); |
| result = tty_register_driver(usb_serial_tty_driver); |
| if (result) { |
| err("%s - tty_register_driver failed", __FUNCTION__); |
| goto exit_generic; |
| } |
| |
| /* register the USB driver */ |
| result = usb_register(&usb_serial_driver); |
| if (result < 0) { |
| err("%s - usb_register failed", __FUNCTION__); |
| goto exit_tty; |
| } |
| |
| info(DRIVER_DESC " " DRIVER_VERSION); |
| |
| return result; |
| |
| exit_tty: |
| tty_unregister_driver(usb_serial_tty_driver); |
| |
| exit_generic: |
| usb_serial_generic_deregister(); |
| |
| exit: |
| err ("%s - returning with error %d", __FUNCTION__, result); |
| put_tty_driver(usb_serial_tty_driver); |
| return result; |
| } |
| |
| |
| /*static*/ void __exit usb_serial_exit(void) |
| { |
| usb_serial_console_exit(); |
| |
| usb_serial_generic_deregister(); |
| |
| usb_deregister(&usb_serial_driver); |
| tty_unregister_driver(usb_serial_tty_driver); |
| put_tty_driver(usb_serial_tty_driver); |
| bus_unregister(&usb_serial_bus_type); |
| } |
| |
| |
| module_init(usb_serial_init); |
| module_exit(usb_serial_exit); |
| |
| #define set_to_generic_if_null(type, function) \ |
| do { \ |
| if (!type->function) { \ |
| type->function = usb_serial_generic_##function; \ |
| dbg("Had to override the " #function \ |
| " usb serial operation with the generic one.");\ |
| } \ |
| } while (0) |
| |
| static void fixup_generic(struct usb_serial_device_type *device) |
| { |
| set_to_generic_if_null(device, open); |
| set_to_generic_if_null(device, write); |
| set_to_generic_if_null(device, close); |
| set_to_generic_if_null(device, write_room); |
| set_to_generic_if_null(device, chars_in_buffer); |
| set_to_generic_if_null(device, read_bulk_callback); |
| set_to_generic_if_null(device, write_bulk_callback); |
| set_to_generic_if_null(device, shutdown); |
| } |
| |
| int usb_serial_register(struct usb_serial_device_type *new_device) |
| { |
| 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); |
| |
| if (retval) |
| goto error; |
| |
| info("USB Serial support registered for %s", new_device->name); |
| |
| return retval; |
| error: |
| err("problem %d when registering driver %s", retval, new_device->name); |
| list_del(&new_device->driver_list); |
| |
| return retval; |
| } |
| |
| |
| 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); |
| } |
| |
| |
| |
| /* 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); |
| |
| |
| /* Module information */ |
| MODULE_AUTHOR( DRIVER_AUTHOR ); |
| MODULE_DESCRIPTION( DRIVER_DESC ); |
| MODULE_LICENSE("GPL"); |
| |
| MODULE_PARM(debug, "i"); |
| MODULE_PARM_DESC(debug, "Debug enabled or not"); |
| /* |
| * USB Serial Converter driver |
| * |
| * Copyright (C) 1999 - 2003 Greg Kroah-Hartman (greg@kroah.com) |
| * Copyright (C) 2000 Peter Berger (pberger@brimson.com) |
| * Copyright (C) 2000 Al Borchers (borchers@steinerpoint.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * 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 |
| * 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 <linuxcomp.h> |
| |
| #include <linux/config.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/tty.h> |
| #include <linux/tty_driver.h> |
| #include <linux/tty_flip.h> |
| #include <linux/module.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" |
| |
| /* |
| * 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" |
| |
| |
| #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 |
| the MODULE_DEVICE_TABLE declarations in each serial driver |
| cause the "hotplug" program to pull in whatever module is necessary |
| via modprobe, and modprobe will load usbserial because the serial |
| drivers depend on it. |
| */ |
| |
| 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 (serial) |
| kobject_get (&serial->kobj); |
| return serial; |
| } |
| |
| static struct usb_serial *get_free_serial (struct usb_serial *serial, int num_ports, unsigned int *minor) |
| { |
| unsigned int i, j; |
| int good_spot; |
| |
| dbg("%s %d", __FUNCTION__, num_ports); |
| |
| *minor = 0; |
| for (i = 0; i < SERIAL_TTY_MINORS; ++i) { |
| if (serial_table[i]) |
| continue; |
| |
| good_spot = 1; |
| for (j = 1; j <= num_ports-1; ++j) |
| if ((serial_table[i+j]) || (i+j >= SERIAL_TTY_MINORS)) { |
| good_spot = 0; |
| i += j; |
| break; |
| } |
| 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) |
| serial_table[i] = serial; |
| return serial; |
| } |
| return NULL; |
| } |
| |
| static void return_serial (struct usb_serial *serial) |
| { |
| int i; |
| |
| dbg("%s", __FUNCTION__); |
| printk("Returning serial %d ports %d\n", serial->minor, serial->num_ports); |
| |
| if (serial == NULL) |
| return; |
| |
| for (i = 0; i < serial->num_ports; ++i) { |
| serial_table[serial->minor + i] = NULL; |
| } |
| |
| return; |
| } |
| |
| /***************************************************************************** |
| * Driver tty interface functions |
| *****************************************************************************/ |
| /*static*/ int serial_open (struct tty_struct *tty, struct file * filp) |
| { |
| struct usb_serial *serial; |
| struct usb_serial_port *port; |
| unsigned int portNumber; |
| int retval = 0; |
| |
| 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_paranoia_check (serial, __FUNCTION__)) |
| 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)) { |
| retval = -ENODEV; |
| goto bailout; |
| } |
| |
| ++port->open_count; |
| if (port->open_count == 1) { |
| /* 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); |
| kobject_put(&serial->kobj); |
| } |
| } |
| bailout: |
| 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 *serial = get_usb_serial (port, __FUNCTION__); |
| |
| if (!serial) |
| return; |
| |
| dbg("%s - port %d", __FUNCTION__, port->number); |
| |
| --port->open_count; |
| 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->owner); |
| kobject_put(&port->serial->kobj); |
| } |
| |
| /*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) { |
| dbg("%s - port not opened", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| retval = 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) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| retval = 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) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| retval = 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); |
| |
| if (!port->open_count) { |
| dbg ("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| if (serial->type->throttle) |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* pass on to the driver specific version of this function */ |
| if (serial->type->unthrottle) |
| 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) { |
| dbg ("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* 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); |
| else |
| retval = -ENOIOCTLCMD; |
| |
| exit: |
| return retval; |
| } |
| |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* 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); |
| |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| /* 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); |
| |
| 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; |
| int length = 0; |
| int i; |
| off_t begin = 0; |
| char tmp[40]; |
| |
| dbg("%s", __FUNCTION__); |
| length += sprintf26 (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION); |
| for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) { |
| serial = usb_serial_get_by_index(i); |
| if (serial == NULL) |
| continue; |
| |
| length += sprintf26 (page+length, "%d:", i); |
| if (serial->type->owner) |
| length += sprintf26 (page+length, " module:%s", module_name(serial->type->owner)); |
| length += sprintf26 (page+length, " name:\"%s\"", serial->type->name); |
| length += sprintf26 (page+length, " vendor:%04x product:%04x", serial->vendor, serial->product); |
| length += sprintf26 (page+length, " num_ports:%d", serial->num_ports); |
| length += sprintf26 (page+length, " port:%d", i - serial->minor + 1); |
| |
| usb_make_path(serial->dev, tmp, sizeof(tmp)); |
| length += sprintf26 (page+length, " path:%s", tmp); |
| |
| length += sprintf26 (page+length, "\n"); |
| if ((length + begin) > (off + count)) |
| goto done; |
| if ((length + begin) < off) { |
| begin += length; |
| length = 0; |
| } |
| kobject_put(&serial->kobj); |
| } |
| *eof = 1; |
| done: |
| if (off >= (length + begin)) |
| return 0; |
| *start = page + (off-begin); |
| return ((count < begin+length-off) ? count : begin+length-off); |
| } |
| |
| 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); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| if (serial->type->tiocmget) |
| return serial->type->tiocmget(port, file); |
| |
| exit: |
| return -EINVAL; |
| } |
| |
| 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 *serial = get_usb_serial (port, __FUNCTION__); |
| |
| if (!serial) |
| goto exit; |
| |
| dbg("%s - port %d", __FUNCTION__, port->number); |
| |
| if (!port->open_count) { |
| dbg("%s - port not open", __FUNCTION__); |
| goto exit; |
| } |
| |
| if (serial->type->tiocmset) |
| return 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 kobject *kobj) |
| { |
| struct usb_serial *serial; |
| struct usb_serial_port *port; |
| int i; |
| |
| dbg ("%s - %s", __FUNCTION__, kobj->name); |
| |
| serial = to_usb_serial(kobj); |
| 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); |
| } |
| |
| static struct kobj_type usb_serial_kobj_type = { |
| .release = destroy_serial, |
| }; |
| |
| static void port_release(struct device *dev) |
| { |
| 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); |
| } |
| kfree(port->bulk_in_buffer); |
| kfree(port->bulk_out_buffer); |
| kfree(port->interrupt_in_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 *serial; |
| |
| serial = kmalloc (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->interface = interface; |
| serial->vendor = dev->descriptor.idVendor; |
| serial->product = dev->descriptor.idProduct; |
| |
| /* initialize the kobject portion of the usb_device */ |
| kobject_init(&serial->kobj); |
| serial->kobj.ktype = &usb_serial_kobj_type; |
| |
| return serial; |
| } |
| |
| int usb_serial_probe(struct usb_interface *interface, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *dev = interface_to_usbdev (interface); |
| struct usb_serial *serial = NULL; |
| struct usb_serial_port *port; |
| 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 *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; |
| int retval; |
| int found; |
| int minor; |
| int buffer_size; |
| int i; |
| int num_interrupt_in = 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 */ |
| 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; |
| } |
| |
| /* if this device type has a probe function, call it */ |
| if (type->probe) { |
| if (!try_module_get(type->owner)) { |
| dev_err(&interface->dev, "module get failed, exiting\n"); |
| kfree (serial); |
| return -EIO; |
| } |
| retval = type->probe (serial, id_pattern); |
| module_put(type->owner); |
| |
| if (retval) { |
| dbg ("sub driver rejected device"); |
| kfree (serial); |
| return retval; |
| } |
| } |
| |
| /* descriptor matches, let's find the endpoints needed */ |
| /* check out the endpoints */ |
| iface_desc = &interface->altsetting[0]; |
| for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| endpoint = &iface_desc->endpoint[i].desc; |
| |
| if ((endpoint->bEndpointAddress & 0x80) && |
| ((endpoint->bmAttributes & 3) == 0x02)) { |
| /* we found a bulk in endpoint */ |
| dbg("found bulk in"); |
| 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"); |
| 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"); |
| interrupt_in_endpoint[num_interrupt_in] = endpoint; |
| ++num_interrupt_in; |
| } |
| } |
| |
| #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 (interface != dev->actconfig->interface[0]) { |
| /* check out the endpoints of the other interface*/ |
| iface_desc = &dev->actconfig->interface[0]->altsetting[0]; |
| for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| endpoint = &iface_desc->endpoint[i].desc; |
| if ((endpoint->bEndpointAddress & 0x80) && |
| ((endpoint->bmAttributes & 3) == 0x03)) { |
| /* we found a interrupt in endpoint */ |
| dbg("found interrupt in for Prolific device on separate interface"); |
| interrupt_in_endpoint[num_interrupt_in] = endpoint; |
| ++num_interrupt_in; |
| } |
| } |
| } |
| |
| /* Now make sure the PL-2303 is configured correctly. |
| * If not, give up now and hope this hack will work |
| * properly during a later invocation of usb_serial_probe |
| */ |
| if (num_bulk_in == 0 || num_bulk_out == 0) { |
| dev_info(&interface->dev, "PL-2303 hack: descriptors matched but endpoints did not\n"); |
| kfree (serial); |
| return -ENODEV; |
| } |
| } |
| /* END HORRIBLE HACK FOR PL2303 */ |
| #endif |
| |
| /* found all that we need */ |
| dev_info(&interface->dev, "%s converter detected\n", type->name); |
| |
| #ifdef CONFIG_USB_SERIAL_GENERIC |
| if (type == &usb_serial_generic_device) { |
| num_ports = num_bulk_out; |
| if (num_ports == 0) { |
| dev_err(&interface->dev, "Generic device with no bulk out, not allowed.\n"); |
| kfree (serial); |
| return -EIO; |
| } |
| } |
| #endif |
| 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)) { |
| dev_err(&interface->dev, "module get failed, exiting\n"); |
| kfree (serial); |
| return -EIO; |
| } |
| num_ports = type->calc_num_ports (serial); |
| module_put(type->owner); |
| } |
| if (!num_ports) |
| num_ports = type->num_ports; |
| } |
| |
| if (get_free_serial (serial, num_ports, &minor) == NULL) { |
| dev_err(&interface->dev, "No more free serial devices\n"); |
| kfree (serial); |
| return -ENOMEM; |
| } |
| |
| serial->minor = minor; |
| serial->num_ports = num_ports; |
| serial->num_bulk_in = num_bulk_in; |
| serial->num_bulk_out = num_bulk_out; |
| serial->num_interrupt_in = num_interrupt_in; |
| |
| /* 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, (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); |
| if (!port) |
| goto probe_error; |
| 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; |
| } |
| |
| /* set up the endpoint information */ |
| for (i = 0; i < num_bulk_in; ++i) { |
| endpoint = bulk_in_endpoint[i]; |
| port = serial->port[i]; |
| port->read_urb = usb_alloc_urb (0, GFP_KERNEL); |
| if (!port->read_urb) { |
| dev_err(&interface->dev, "No free urbs available\n"); |
| goto probe_error; |
| } |
| buffer_size = endpoint->wMaxPacketSize; |
| |
| port->bulk_in_endpointAddress = endpoint->bEndpointAddress; |
| port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL); |
| if (!port->bulk_in_buffer) { |
| dev_err(&interface->dev, "Couldn't allocate bulk_in_buffer\n"); |
| goto probe_error; |
| } |
| usb_fill_bulk_urb (port->read_urb, dev, |
| usb_rcvbulkpipe (dev, |
| endpoint->bEndpointAddress), |
| port->bulk_in_buffer, buffer_size, |
| serial->type->read_bulk_callback, |
| port); |
| } |
| |
| for (i = 0; i < num_bulk_out; ++i) { |
| endpoint = bulk_out_endpoint[i]; |
| port = serial->port[i]; |
| port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!port->write_urb) { |
| dev_err(&interface->dev, "No free urbs available\n"); |
| goto probe_error; |
| } |
| buffer_size = endpoint->wMaxPacketSize; |
| port->bulk_out_size = buffer_size; |
| port->bulk_out_endpointAddress = endpoint->bEndpointAddress; |
| port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL); |
| if (!port->bulk_out_buffer) { |
| dev_err(&interface->dev, "Couldn't allocate bulk_out_buffer\n"); |
| goto probe_error; |
| } |
| usb_fill_bulk_urb (port->write_urb, dev, |
| usb_sndbulkpipe (dev, |
| endpoint->bEndpointAddress), |
| port->bulk_out_buffer, buffer_size, |
| serial->type->write_bulk_callback, |
| 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; |
| } |
| 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; |
| } |
| 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); |
| } |
| |
| /* if this device type has an attach function, call it */ |
| if (type->attach) { |
| if (!try_module_get(type->owner)) { |
| dev_err(&interface->dev, "module get failed, exiting\n"); |
| goto probe_error; |
| } |
| retval = type->attach (serial); |
| module_put(type->owner); |
| if (retval < 0) |
| goto probe_error; |
| if (retval > 0) { |
| /* quietly accept this device, but don't bind to a serial port |
| * as it's about to disappear */ |
| goto exit; |
| } |
| } |
| |
| /* register all of the individual ports with the driver core */ |
| for (i = 0; i < num_ports; ++i) { |
| port = serial->port[i]; |
| port->dev.parent = &interface->dev; |
| port->dev.driver = NULL; |
| port->dev.bus = &usb_serial_bus_type; |
| port->dev.release = &port_release; |
| |
| snprintf26(&port->dev.bus_id[0], sizeof(port->dev.bus_id), "ttyUSB%d", port->number); |
| /*dbg ("%s - registering %s", __FUNCTION__, port->dev.bus_id);*/ |
| device_register (&port->dev); |
| } |
| |
| usb_serial_console_init (debug, minor); |
| |
| exit: |
| /* success */ |
| usb_set_intfdata (interface, serial); |
| return 0; |
| |
| probe_error: |
| for (i = 0; i < num_bulk_in; ++i) { |
| port = serial->port[i]; |
| if (!port) |
| continue; |
| if (port->read_urb) |
| usb_free_urb (port->read_urb); |
| kfree(port->bulk_in_buffer); |
| } |
| for (i = 0; i < num_bulk_out; ++i) { |
| port = serial->port[i]; |
| if (!port) |
| continue; |
| if (port->write_urb) |
| usb_free_urb (port->write_urb); |
| kfree(port->bulk_out_buffer); |
| } |
| for (i = 0; i < num_interrupt_in; ++i) { |
| port = serial->port[i]; |
| if (!port) |
| continue; |
| if (port->interrupt_in_urb) |
| usb_free_urb (port->interrupt_in_urb); |
| kfree(port->interrupt_in_buffer); |
| } |
| |
| /* return the minor range that this device had */ |
| return_serial (serial); |
| |
| /* free up any memory that we allocated */ |
| for (i = 0; i < serial->num_port_pointers; ++i) |
| kfree(serial->port[i]); |
| kfree (serial); |
| return -EIO; |
| } |
| |
| void usb_serial_disconnect(struct usb_interface *interface) |
| { |
| struct usb_serial *serial = usb_get_intfdata (interface); |
| struct device *dev = &interface->dev; |
| |
| dbg ("%s", __FUNCTION__); |
| |
| usb_set_intfdata (interface, NULL); |
| if (serial) { |
| /* let the last holder of this object |
| * cause it to be cleaned up */ |
| kobject_put (&serial->kobj); |
| } |
| dev_info(dev, "device disconnected\n"); |
| } |
| |
| static struct tty_operations serial_ops = { |
| .open = serial_open, |
| .close = serial_close, |
| .write = serial_write, |
| .write_room = serial_write_room, |
| .ioctl = serial_ioctl, |
| .set_termios = serial_set_termios, |
| .throttle = serial_throttle, |
| .unthrottle = serial_unthrottle, |
| .break_ctl = serial_break, |
| .chars_in_buffer = serial_chars_in_buffer, |
| .read_proc = serial_read_proc, |
| .tiocmget = serial_tiocmget, |
| .tiocmset = serial_tiocmset, |
| }; |
| |
| struct tty_driver *usb_serial_tty_driver; |
| |
| /*static*/ int __init usb_serial_init(void) |
| { |
| int i; |
| int result = 0; |
| |
| usb_serial_tty_driver = alloc_tty_driver(SERIAL_TTY_MINORS); |
| if (!usb_serial_tty_driver) |
| return -ENOMEM; |
| |
| /* Initialize our global data */ |
| for (i = 0; i < SERIAL_TTY_MINORS; ++i) { |
| 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; |
| } |
| |
| usb_serial_tty_driver->owner = THIS_MODULE; |
| usb_serial_tty_driver->driver_name = "usbserial"; |
| usb_serial_tty_driver->devfs_name = "usb/tts/"; |
| usb_serial_tty_driver->name = "ttyUSB"; |
| usb_serial_tty_driver->major = SERIAL_TTY_MAJOR; |
| usb_serial_tty_driver->minor_start = 0; |
| usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL; |
| usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; |
| usb_serial_tty_driver->init_termios = tty_std_termios; |
| usb_serial_tty_driver->init_termios.c_cflag = B4800 | CS8 | CREAD | HUPCL | CLOCAL; |
| tty_set_operations(usb_serial_tty_driver, &serial_ops); |
| result = tty_register_driver(usb_serial_tty_driver); |
| if (result) { |
| err("%s - tty_register_driver failed", __FUNCTION__); |
| goto exit_generic; |
| } |
| |
| /* register the USB driver */ |
| result = usb_register(&usb_serial_driver); |
| if (result < 0) { |
| err("%s - usb_register failed", __FUNCTION__); |
| goto exit_tty; |
| } |
| |
| info(DRIVER_DESC " " DRIVER_VERSION); |
| |
| return result; |
| |
| exit_tty: |
| tty_unregister_driver(usb_serial_tty_driver); |
| |
| exit_generic: |
| usb_serial_generic_deregister(); |
| |
| exit: |
| err ("%s - returning with error %d", __FUNCTION__, result); |
| put_tty_driver(usb_serial_tty_driver); |
| return result; |
| } |
| |
| |
| /*static*/ void __exit usb_serial_exit(void) |
| { |
| usb_serial_console_exit(); |
| |
| usb_serial_generic_deregister(); |
| |
| usb_deregister(&usb_serial_driver); |
| tty_unregister_driver(usb_serial_tty_driver); |
| put_tty_driver(usb_serial_tty_driver); |
| bus_unregister(&usb_serial_bus_type); |
| } |
| |
| |
| module_init(usb_serial_init); |
| module_exit(usb_serial_exit); |
| |
| #define set_to_generic_if_null(type, function) \ |
| do { \ |
| if (!type->function) { \ |
| type->function = usb_serial_generic_##function; \ |
| dbg("Had to override the " #function \ |
| " usb serial operation with the generic one.");\ |
| } \ |
| } while (0) |
| |
| static void fixup_generic(struct usb_serial_device_type *device) |
| { |
| set_to_generic_if_null(device, open); |
| set_to_generic_if_null(device, write); |
| set_to_generic_if_null(device, close); |
| set_to_generic_if_null(device, write_room); |
| set_to_generic_if_null(device, chars_in_buffer); |
| set_to_generic_if_null(device, read_bulk_callback); |
| set_to_generic_if_null(device, write_bulk_callback); |
| set_to_generic_if_null(device, shutdown); |
| } |
| |
| int usb_serial_register(struct usb_serial_device_type *new_device) |
| { |
| 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); |
| |
| if (retval) |
| goto error; |
| |
| info("USB Serial support registered for %s", new_device->name); |
| |
| return retval; |
| error: |
| err("problem %d when registering driver %s", retval, new_device->name); |
| list_del(&new_device->driver_list); |
| |
| return retval; |
| } |
| |
| |
| 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); |
| } |
| |
| |
| |
| /* 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); |
| |
| |
| /* Module information */ |
| MODULE_AUTHOR( DRIVER_AUTHOR ); |
| MODULE_DESCRIPTION( DRIVER_DESC ); |
| MODULE_LICENSE("GPL"); |
| |
| MODULE_PARM(debug, "i"); |
| MODULE_PARM_DESC(debug, "Debug enabled or not"); |