# This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.682 -> 1.683 # drivers/usb/serial/Makefile 1.10 -> 1.11 # drivers/usb/serial/usbserial.c 1.46 -> 1.48 drivers/usb/serial/usb-serial.c (moved) # drivers/usb/serial/usb-serial.h 1.14 -> 1.15 # (new) -> 1.1 drivers/usb/serial/console.c # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 02/10/02 greg@kroah.com 1.683 # USB: split the usb serial console code out into its own file. # -------------------------------------------- # diff -Nru a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile --- a/drivers/usb/serial/Makefile Wed Oct 2 22:39:59 2002 +++ b/drivers/usb/serial/Makefile Wed Oct 2 22:39:59 2002 @@ -4,7 +4,10 @@ # Object file lists. -obj-$(CONFIG_USB_SERIAL) += usbserial.o +obj-$(CONFIG_USB_SERIAL) += usbserial.o + +usbserial-obj-$(CONFIG_USB_SERIAL_CONSOLE) += console.o + obj-$(CONFIG_USB_SERIAL_VISOR) += visor.o obj-$(CONFIG_USB_SERIAL_IPAQ) += ipaq.o obj-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat.o @@ -26,7 +29,9 @@ obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o # Objects that export symbols. -export-objs := usbserial.o +export-objs := usb-serial.o + +usbserial-objs := usb-serial.o $(usbserial-obj-y) include $(TOPDIR)/Rules.make diff -Nru a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c --- /dev/null Wed Dec 31 16:00:00 1969 +++ b/drivers/usb/serial/console.c Wed Oct 2 22:39:59 2002 @@ -0,0 +1,266 @@ +/* + * USB Serial Console driver + * + * Copyright (C) 2001 - 2002 Greg Kroah-Hartman (greg@kroah.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. + * + * Thanks to Randy Dunlap for the original version of this code. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +static int debug; + +#include "usb-serial.h" + +struct usbcons_info { + int magic; + int break_flag; + struct usb_serial_port *port; +}; + +static struct usbcons_info usbcons_info; +static struct console usbcons; + +/* + * ------------------------------------------------------------ + * USB Serial console driver + * + * Much of the code here is copied from drivers/char/serial.c + * and implements a phony serial console in the same way that + * serial.c does so that in case some software queries it, + * it will get the same results. + * + * Things that are different from the way the serial port code + * does things, is that we call the lower level usb-serial + * driver code to initialize the device, and we set the initial + * console speeds based on the command line arguments. + * ------------------------------------------------------------ + */ + + +/* + * The parsing of the command line works exactly like the + * serial.c code, except that the specifier is "ttyUSB" instead + * of "ttyS". + */ +static int __init usb_console_setup(struct console *co, char *options) +{ + struct usbcons_info *info = &usbcons_info; + int baud = 9600; + int bits = 8; + int parity = 'n'; + int doflow = 0; + int cflag = CREAD | HUPCL | CLOCAL; + char *s; + struct usb_serial *serial; + struct usb_serial_port *port; + int retval = 0; + struct tty_struct *tty; + struct termios *termios; + + dbg ("%s", __FUNCTION__); + + if (options) { + baud = simple_strtoul(options, NULL, 10); + s = options; + while (*s >= '0' && *s <= '9') + s++; + if (*s) parity = *s++; + if (*s) bits = *s++ - '0'; + if (*s) doflow = (*s++ == 'r'); + } + + /* build a cflag setting */ + switch (baud) { + case 1200: + cflag |= B1200; + break; + case 2400: + cflag |= B2400; + break; + case 4800: + cflag |= B4800; + break; + case 19200: + cflag |= B19200; + break; + case 38400: + cflag |= B38400; + break; + case 57600: + cflag |= B57600; + break; + case 115200: + cflag |= B115200; + break; + case 9600: + default: + cflag |= B9600; + /* + * Set this to a sane value to prevent a divide error + */ + baud = 9600; + break; + } + switch (bits) { + case 7: + cflag |= CS7; + break; + default: + case 8: + cflag |= CS8; + break; + } + switch (parity) { + case 'o': case 'O': + cflag |= PARODD; + break; + case 'e': case 'E': + cflag |= PARENB; + break; + } + co->cflag = cflag; + + /* grab the first serial port that happens to be connected */ + serial = usb_serial_get_by_minor (0); + if (serial_paranoia_check (serial, __FUNCTION__)) { + /* no device is connected yet, sorry :( */ + err ("No USB device connected to ttyUSB0"); + return -ENODEV; + } + + port = &serial->port[0]; + down (&port->sem); + port->tty = NULL; + + info->port = port; + + ++port->open_count; + if (port->open_count == 1) { + /* only call the device specific open if this + * is the first time the port is opened */ + if (serial->type->open) + retval = serial->type->open(port, NULL); + else + retval = usb_serial_generic_open(port, NULL); + if (retval) + port->open_count = 0; + } + + up (&port->sem); + + if (retval) { + err ("could not open USB console port"); + return retval; + } + + if (serial->type->set_termios) { + /* build up a fake tty structure so that the open call has something + * to look at to get the cflag value */ + tty = kmalloc (sizeof (*tty), GFP_KERNEL); + if (!tty) { + err ("no more memory"); + return -ENOMEM; + } + termios = kmalloc (sizeof (*termios), GFP_KERNEL); + if (!termios) { + err ("no more memory"); + kfree (tty); + return -ENOMEM; + } + memset (tty, 0x00, sizeof(*tty)); + memset (termios, 0x00, sizeof(*termios)); + termios->c_cflag = cflag; + tty->termios = termios; + port->tty = tty; + + /* set up the initial termios settings */ + serial->type->set_termios(port, NULL); + port->tty = NULL; + kfree (termios); + kfree (tty); + } + + return retval; +} + +static void usb_console_write(struct console *co, const char *buf, unsigned count) +{ + static struct usbcons_info *info = &usbcons_info; + struct usb_serial_port *port = info->port; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + int retval = -ENODEV; + + if (!serial || !port) + return; + + if (count == 0) + return; + + down (&port->sem); + + 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 if it is available */ + if (serial->type->write) + retval = serial->type->write(port, 0, buf, count); + else + retval = usb_serial_generic_write(port, 0, buf, count); + +exit: + up (&port->sem); + dbg("%s - return value (if we had one): %d", __FUNCTION__, retval); +} + +static struct console usbcons = { + .name = "ttyUSB", + .write = usb_console_write, + .setup = usb_console_setup, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +void usb_serial_console_init (int serial_debug, int minor) +{ + debug = serial_debug; + + if (minor == 0) { + /* + * Call register_console() if this is the first device plugged + * in. If we call it earlier, then the callback to + * console_setup() will fail, as there is not a device seen by + * the USB subsystem yet. + */ + /* + * Register console. + * NOTES: + * console_setup() is called (back) immediately (from register_console). + * console_write() is called immediately from register_console iff + * CON_PRINTBUFFER is set in flags. + */ + dbg ("registering the USB serial console."); + register_console(&usbcons); + } +} + +void usb_serial_console_exit (void) +{ + unregister_console(&usbcons); +} + diff -Nru a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c --- /dev/null Wed Dec 31 16:00:00 1969 +++ b/drivers/usb/serial/usb-serial.c Wed Oct 2 22:39:59 2002 @@ -0,0 +1,1683 @@ +/* + * USB Serial Converter driver + * + * Copyright (C) 1999 - 2002 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 + * + * (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 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 + * 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 seperate + * 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 continous 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#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 "v1.6" +#define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com, http://www.kroah.com/linux/" +#define DRIVER_DESC "USB Serial Driver core" + +/* function prototypes for a "generic" type serial converter (no flow control, not all endpoints needed) */ +/* need to always compile these in, as some of the other devices use these functions as their own. */ +/* if a driver does not provide a function pointer, the generic function will be called. */ +int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp); +int usb_serial_generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count); +static void generic_close (struct usb_serial_port *port, struct file *filp); +static int generic_write_room (struct usb_serial_port *port); +static int generic_chars_in_buffer (struct usb_serial_port *port); +static void generic_read_bulk_callback (struct urb *urb); +static void generic_write_bulk_callback (struct urb *urb); +static void generic_shutdown (struct usb_serial *serial); + + +#ifdef CONFIG_USB_SERIAL_GENERIC +static __u16 vendor = 0x05f9; +static __u16 product = 0xffff; + +static struct usb_device_id generic_device_ids[2]; /* Initially all zeroes. */ + +/* All of the device info needed for the Generic Serial Converter */ +static struct usb_serial_device_type generic_device = { + .owner = THIS_MODULE, + .name = "Generic", + .id_table = generic_device_ids, + .num_interrupt_in = NUM_DONT_CARE, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 1, + .shutdown = generic_shutdown, +}; + +/* 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 + +/* Driver structure we register with the USB core */ +static struct usb_driver usb_serial_driver = { + .name = "serial", + .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 int serial_refcount; +static struct tty_driver serial_tty_driver; +static struct tty_struct * serial_tty[SERIAL_TTY_MINORS]; +static struct termios * serial_termios[SERIAL_TTY_MINORS]; +static struct termios * serial_termios_locked[SERIAL_TTY_MINORS]; +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_minor (unsigned int minor) +{ + return serial_table[minor]; +} + +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; +} + +#ifdef USES_EZUSB_FUNCTIONS +/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */ +#define CPUCS_REG 0x7F92 + +int ezusb_writememory (struct usb_serial *serial, int address, unsigned char *data, int length, __u8 bRequest) +{ + int result; + unsigned char *transfer_buffer; + + /* dbg("ezusb_writememory %x, %d", address, length); */ + if (!serial->dev) { + dbg("%s - no physical device present, failing.", __FUNCTION__); + return -ENODEV; + } + + transfer_buffer = kmalloc (length, GFP_KERNEL); + if (!transfer_buffer) { + err("%s - kmalloc(%d) failed.", __FUNCTION__, length); + return -ENOMEM; + } + memcpy (transfer_buffer, data, length); + result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), bRequest, 0x40, address, 0, transfer_buffer, length, 3*HZ); + kfree (transfer_buffer); + return result; +} + +int ezusb_set_reset (struct usb_serial *serial, unsigned char reset_bit) +{ + int response; + dbg("%s - %d", __FUNCTION__, reset_bit); + response = ezusb_writememory (serial, CPUCS_REG, &reset_bit, 1, 0xa0); + if (response < 0) { + err("%s- %d failed", __FUNCTION__, reset_bit); + } + return response; +} + +#endif /* USES_EZUSB_FUNCTIONS */ + +/***************************************************************************** + * 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_minor (minor(tty->device)); + + 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 = minor(tty->device) - serial->minor; + port = &serial->port[portNumber]; + tty->driver_data = port; + + down (&port->sem); + port->tty = tty; + + /* lock this module before we call it */ + if (serial->type->owner) + __MOD_INC_USE_COUNT(serial->type->owner); + + ++port->open_count; + if (port->open_count == 1) { + /* only call the device specific open if this + * is the first time the port is opened */ + if (serial->type->open) + retval = serial->type->open(port, filp); + else + retval = usb_serial_generic_open(port, filp); + if (retval) { + port->open_count = 0; + if (serial->type->owner) + __MOD_DEC_USE_COUNT(serial->type->owner); + } + } + + up (&port->sem); + return retval; +} + +static void __serial_close(struct usb_serial_port *port, struct file *filp) +{ + if (!port->open_count) { + dbg ("%s - port not opened", __FUNCTION__); + return; + } + + --port->open_count; + if (port->open_count <= 0) { + /* only call the device specific close if this + * port is being closed by the last owner */ + if (port->serial->type->close) + port->serial->type->close(port, filp); + else + generic_close(port, filp); + port->open_count = 0; + } + + if (port->serial->type->owner) + __MOD_DEC_USE_COUNT(port->serial->type->owner); +} + +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; + + down (&port->sem); + + dbg("%s - port %d", __FUNCTION__, port->number); + + /* if disconnect beat us to the punch here, there's nothing to do */ + if (tty->driver_data) { + __serial_close(port, filp); + } + + up (&port->sem); +} + +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; + + down (&port->sem); + + 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 if it is available */ + if (serial->type->write) + retval = serial->type->write(port, from_user, buf, count); + else + retval = usb_serial_generic_write(port, from_user, buf, count); + +exit: + up (&port->sem); + 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; + + down (&port->sem); + + 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->write_room) + retval = serial->type->write_room(port); + else + retval = generic_write_room(port); + +exit: + up (&port->sem); + 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; + + down (&port->sem); + + 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->chars_in_buffer) + retval = serial->type->chars_in_buffer(port); + else + retval = generic_chars_in_buffer(port); + +exit: + up (&port->sem); + 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; + + down (&port->sem); + + 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: + up (&port->sem); +} + +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; + + down (&port->sem); + + 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: + up (&port->sem); +} + +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; + + down (&port->sem); + + 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: + up (&port->sem); + 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; + + down (&port->sem); + + 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: + up (&port->sem); +} + +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; + + down (&port->sem); + + 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: + up (&port->sem); +} + +static void serial_shutdown (struct usb_serial *serial) +{ + dbg ("%s", __FUNCTION__); + + if (serial->type->shutdown) + serial->type->shutdown(serial); + else + generic_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 += sprintf (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_minor(i); + if (serial == NULL) + continue; + + length += sprintf (page+length, "%d:", i); + if (serial->type->owner) + length += sprintf (page+length, " module:%s", serial->type->owner->name); + length += sprintf (page+length, " name:\"%s\"", serial->type->name); + length += sprintf (page+length, " vendor:%04x product:%04x", serial->vendor, serial->product); + length += sprintf (page+length, " num_ports:%d", serial->num_ports); + length += sprintf (page+length, " port:%d", i - serial->minor + 1); + + usb_make_path(serial->dev, tmp, sizeof(tmp)); + length += sprintf (page+length, " path:%s", tmp); + + length += sprintf (page+length, "\n"); + if ((length + begin) > (off + count)) + goto done; + if ((length + begin) < off) { + begin += length; + length = 0; + } + } + *eof = 1; +done: + if (off >= (length + begin)) + return 0; + *start = page + (off-begin); + return ((count < begin+length-off) ? count : begin+length-off); +} + +/***************************************************************************** + * generic devices specific driver functions + *****************************************************************************/ +int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp) +{ + struct usb_serial *serial = port->serial; + int result = 0; + + if (port_paranoia_check (port, __FUNCTION__)) + return -ENODEV; + + dbg("%s - port %d", __FUNCTION__, port->number); + + /* force low_latency on so that our tty_push actually forces the data through, + otherwise it is scheduled, and with high data rates (like with OHCI) data + can get lost. */ + if (port->tty) + port->tty->low_latency = 1; + + /* if we have a bulk interrupt, start reading from it */ + if (serial->num_bulk_in) { + /* Start reading from the device */ + usb_fill_bulk_urb (port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + ((serial->type->read_bulk_callback) ? + serial->type->read_bulk_callback : + generic_read_bulk_callback), + port); + result = usb_submit_urb(port->read_urb, GFP_KERNEL); + if (result) + err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); + } + + return result; +} + +static void generic_cleanup (struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (serial->dev) { + /* shutdown any bulk reads that might be going on */ + if (serial->num_bulk_out) + usb_unlink_urb (port->write_urb); + if (serial->num_bulk_in) + usb_unlink_urb (port->read_urb); + } +} + +static void generic_close (struct usb_serial_port *port, struct file * filp) +{ + dbg("%s - port %d", __FUNCTION__, port->number); + generic_cleanup (port); +} + +int usb_serial_generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count) +{ + struct usb_serial *serial = port->serial; + int result; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (count == 0) { + dbg("%s - write request of 0 bytes", __FUNCTION__); + return (0); + } + + /* only do something if we have a bulk out endpoint */ + if (serial->num_bulk_out) { + if (port->write_urb->status == -EINPROGRESS) { + dbg("%s - already writing", __FUNCTION__); + return (0); + } + + count = (count > port->bulk_out_size) ? port->bulk_out_size : count; + + if (from_user) { + if (copy_from_user(port->write_urb->transfer_buffer, buf, count)) + return -EFAULT; + } + else { + memcpy (port->write_urb->transfer_buffer, buf, count); + } + + usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer); + + /* set up our urb */ + usb_fill_bulk_urb (port->write_urb, serial->dev, + usb_sndbulkpipe (serial->dev, + port->bulk_out_endpointAddress), + port->write_urb->transfer_buffer, count, + ((serial->type->write_bulk_callback) ? + serial->type->write_bulk_callback : + generic_write_bulk_callback), port); + + /* send the data out the bulk port */ + result = usb_submit_urb(port->write_urb, GFP_ATOMIC); + if (result) + err("%s - failed submitting write urb, error %d", __FUNCTION__, result); + else + result = count; + + return result; + } + + /* no bulk out, so return 0 bytes written */ + return (0); +} + +static int generic_write_room (struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + int room = 0; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (serial->num_bulk_out) { + if (port->write_urb->status != -EINPROGRESS) + room = port->bulk_out_size; + } + + dbg("%s - returns %d", __FUNCTION__, room); + return (room); +} + +static int generic_chars_in_buffer (struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + int chars = 0; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (serial->num_bulk_out) { + if (port->write_urb->status == -EINPROGRESS) + chars = port->write_urb->transfer_buffer_length; + } + + dbg("%s - returns %d", __FUNCTION__, chars); + return (chars); +} + +static void generic_read_bulk_callback (struct urb *urb) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + struct tty_struct *tty; + unsigned char *data = urb->transfer_buffer; + int i; + int result; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (!serial) { + dbg("%s - bad serial pointer, exiting", __FUNCTION__); + return; + } + + if (urb->status) { + dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); + return; + } + + usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data); + + tty = port->tty; + if (tty && urb->actual_length) { + for (i = 0; i < urb->actual_length ; ++i) { + /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */ + if(tty->flip.count >= TTY_FLIPBUF_SIZE) { + tty_flip_buffer_push(tty); + } + /* this doesn't actually push the data through unless tty->low_latency is set */ + tty_insert_flip_char(tty, data[i], 0); + } + tty_flip_buffer_push(tty); + } + + /* Continue trying to always read */ + usb_fill_bulk_urb (port->read_urb, serial->dev, + usb_rcvbulkpipe (serial->dev, + port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + ((serial->type->read_bulk_callback) ? + serial->type->read_bulk_callback : + generic_read_bulk_callback), port); + result = usb_submit_urb(port->read_urb, GFP_ATOMIC); + if (result) + err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); +} + +static void generic_write_bulk_callback (struct urb *urb) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (!serial) { + dbg("%s - bad serial pointer, exiting", __FUNCTION__); + return; + } + + if (urb->status) { + dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); + return; + } + + usb_serial_port_softint((void *)port); + + schedule_work(&port->work); +} + +static void generic_shutdown (struct usb_serial *serial) +{ + int i; + + dbg("%s", __FUNCTION__); + + /* stop reads and writes on all ports */ + for (i=0; i < serial->num_ports; ++i) { + generic_cleanup (&serial->port[i]); + } +} + +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 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) { + err ("%s - out of memory", __FUNCTION__); + return NULL; + } + memset (serial, 0, sizeof(*serial)); + serial->dev = dev; + serial->type = type; + serial->interface = interface; + serial->vendor = dev->descriptor.idVendor; + serial->product = dev->descriptor.idProduct; + + 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_interface_descriptor *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) { + err ("%s - out of memory", __FUNCTION__); + return -ENODEV; + } + + /* if this device type has a probe function, call it */ + if (type->probe) { + if (type->owner) + __MOD_INC_USE_COUNT(type->owner); + retval = type->probe (serial); + if (type->owner) + __MOD_DEC_USE_COUNT(type->owner); + + if (retval < 0) { + dbg ("sub driver rejected device"); + kfree (serial); + return -ENODEV; + } + } + + /* descriptor matches, let's find the endpoints needed */ + /* check out the endpoints */ + iface_desc = &interface->altsetting[0]; + for (i = 0; i < iface_desc->bNumEndpoints; ++i) { + endpoint = &iface_desc->endpoint[i]; + + 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) +#if 0 + /* BEGIN HORRIBLE HACK FOR PL2303 */ + /* this is needed due to the looney way its endpoints are set up */ + if (ifnum == 1) { + 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))) { + /* check out the endpoints of the other interface*/ + interface = &dev->actconfig->interface[ifnum ^ 1]; + iface_desc = &interface->altsetting[0]; + for (i = 0; i < iface_desc->bNumEndpoints; ++i) { + endpoint = &iface_desc->endpoint[i]; + 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; + } + } + } + } + /* END HORRIBLE HACK FOR PL2303 */ +#endif +#endif + + /* found all that we need */ + info("%s converter detected", type->name); + +#ifdef CONFIG_USB_SERIAL_GENERIC + if (type == &generic_device) { + num_ports = num_bulk_out; + if (num_ports == 0) { + err("Generic device with no bulk out, not allowed."); + 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 (type->owner) + __MOD_INC_USE_COUNT(type->owner); + num_ports = type->calc_num_ports (serial); + if (type->owner) + __MOD_DEC_USE_COUNT(type->owner); + } + if (!num_ports) + num_ports = type->num_ports; + } + + if (get_free_serial (serial, num_ports, &minor) == NULL) { + err("No more free serial devices"); + 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; + + /* 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) { + err("No free urbs available"); + 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) { + err("Couldn't allocate bulk_in_buffer"); + 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) ? + serial->type->read_bulk_callback : + generic_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) { + err("No free urbs available"); + 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) { + err("Couldn't allocate bulk_out_buffer"); + 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) ? + serial->type->write_bulk_callback : + generic_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) { + err("No free urbs available"); + 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) { + err("Couldn't allocate interrupt_in_buffer"); + 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); + } + + /* initialize some parts of the port structures */ + /* 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); + dbg("%s - setting up %d port structures for this device", __FUNCTION__, max_endpoints); + for (i = 0; i < max_endpoints; ++i) { + port = &serial->port[i]; + port->number = i + serial->minor; + port->serial = serial; + port->magic = USB_SERIAL_PORT_MAGIC; + INIT_WORK(&port->work, usb_serial_port_softint, port); + init_MUTEX (&port->sem); + } + + /* if this device type has an attach function, call it */ + if (type->attach) { + if (type->owner) + __MOD_INC_USE_COUNT(type->owner); + retval = type->attach (serial); + if (type->owner) + __MOD_DEC_USE_COUNT(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 */ + dev_set_drvdata (&interface->dev, serial); + return 0; + } + } + + /* initialize the devfs nodes for this device and let the user know what ports we are bound to */ + for (i = 0; i < serial->num_ports; ++i) { + tty_register_devfs (&serial_tty_driver, 0, serial->port[i].number); + info("%s converter now attached to ttyUSB%d (or usb/tts/%d for devfs)", + type->name, serial->port[i].number, serial->port[i].number); + } + + usb_serial_console_init (debug, minor); + + /* success */ + dev_set_drvdata (&interface->dev, serial); + return 0; + + +probe_error: + for (i = 0; i < num_bulk_in; ++i) { + port = &serial->port[i]; + if (port->read_urb) + usb_free_urb (port->read_urb); + if (port->bulk_in_buffer) + kfree (port->bulk_in_buffer); + } + for (i = 0; i < num_bulk_out; ++i) { + port = &serial->port[i]; + if (port->write_urb) + usb_free_urb (port->write_urb); + if (port->bulk_out_buffer) + kfree (port->bulk_out_buffer); + } + for (i = 0; i < num_interrupt_in; ++i) { + port = &serial->port[i]; + if (port->interrupt_in_urb) + usb_free_urb (port->interrupt_in_urb); + if (port->interrupt_in_buffer) + kfree (port->interrupt_in_buffer); + } + + /* return the minor range that this device had */ + return_serial (serial); + + /* free up any memory that we allocated */ + kfree (serial); + return -EIO; +} + +void usb_serial_disconnect(struct usb_interface *interface) +{ + struct usb_serial *serial = dev_get_drvdata (&interface->dev); + struct usb_serial_port *port; + int i; + + dbg ("%s", __FUNCTION__); + + dev_set_drvdata (&interface->dev, NULL); + if (serial) { + /* fail all future close/read/write/ioctl/etc calls */ + for (i = 0; i < serial->num_ports; ++i) { + port = &serial->port[i]; + down (&port->sem); + if (port->tty != NULL) { + while (port->open_count > 0) { + __serial_close(port, NULL); + } + port->tty->driver_data = NULL; + } + up (&port->sem); + } + + serial->dev = NULL; + serial_shutdown (serial); + + for (i = 0; i < serial->num_ports; ++i) + serial->port[i].open_count = 0; + + for (i = 0; i < serial->num_bulk_in; ++i) { + port = &serial->port[i]; + if (port->read_urb) { + usb_unlink_urb (port->read_urb); + usb_free_urb (port->read_urb); + } + if (port->bulk_in_buffer) + kfree (port->bulk_in_buffer); + } + for (i = 0; i < serial->num_bulk_out; ++i) { + port = &serial->port[i]; + if (port->write_urb) { + usb_unlink_urb (port->write_urb); + usb_free_urb (port->write_urb); + } + if (port->bulk_out_buffer) + kfree (port->bulk_out_buffer); + } + for (i = 0; i < serial->num_interrupt_in; ++i) { + port = &serial->port[i]; + if (port->interrupt_in_urb) { + usb_unlink_urb (port->interrupt_in_urb); + usb_free_urb (port->interrupt_in_urb); + } + if (port->interrupt_in_buffer) + kfree (port->interrupt_in_buffer); + } + + for (i = 0; i < serial->num_ports; ++i) { + tty_unregister_devfs (&serial_tty_driver, serial->port[i].number); + info("%s converter now disconnected from ttyUSB%d", serial->type->name, serial->port[i].number); + } + + /* return the minor range that this device had */ + return_serial (serial); + + /* free up any memory that we allocated */ + kfree (serial); + } + info("device disconnected"); + +} + + +static struct tty_driver serial_tty_driver = { + .magic = TTY_DRIVER_MAGIC, + .driver_name = "usb-serial", +#ifndef CONFIG_DEVFS_FS + .name = "ttyUSB", +#else + .name = "usb/tts/%d", +#endif + .major = SERIAL_TTY_MAJOR, + .minor_start = 0, + .num = SERIAL_TTY_MINORS, + .type = TTY_DRIVER_TYPE_SERIAL, + .subtype = SERIAL_TYPE_NORMAL, + .flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, + + .refcount = &serial_refcount, + .table = serial_tty, + .termios = serial_termios, + .termios_locked = serial_termios_locked, + + .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, +}; + + +static int __init usb_serial_init(void) +{ + int i; + int result; + + /* Initalize our global data */ + for (i = 0; i < SERIAL_TTY_MINORS; ++i) { + serial_table[i] = NULL; + } + + /* register the tty driver */ + serial_tty_driver.init_termios = tty_std_termios; + serial_tty_driver.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; + if (tty_register_driver (&serial_tty_driver)) { + err("%s - failed to register tty driver", __FUNCTION__); + return -1; + } + + /* register the USB driver */ + result = usb_register(&usb_serial_driver); + if (result < 0) { + tty_unregister_driver(&serial_tty_driver); + err("usb_register failed for the usb-serial driver. Error number %d", result); + return -1; + } + +#ifdef CONFIG_USB_SERIAL_GENERIC + generic_device_ids[0].idVendor = vendor; + generic_device_ids[0].idProduct = product; + generic_device_ids[0].match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT; + /* register our generic driver with ourselves */ + usb_serial_register (&generic_device); +#endif + + info(DRIVER_DESC " " DRIVER_VERSION); + + return 0; +} + + +static void __exit usb_serial_exit(void) +{ + usb_serial_console_exit(); + +#ifdef CONFIG_USB_SERIAL_GENERIC + /* remove our generic driver */ + usb_serial_deregister (&generic_device); +#endif + + usb_deregister(&usb_serial_driver); + tty_unregister_driver(&serial_tty_driver); +} + + +module_init(usb_serial_init); +module_exit(usb_serial_exit); + + +int usb_serial_register(struct usb_serial_device_type *new_device) +{ + /* Add this device to our list of devices */ + list_add(&new_device->driver_list, &usb_serial_driver_list); + + info ("USB Serial support registered for %s", new_device->name); + + return 0; +} + + +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); +} + + + +/* 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); +#ifdef USES_EZUSB_FUNCTIONS + EXPORT_SYMBOL(ezusb_writememory); + EXPORT_SYMBOL(ezusb_set_reset); +#endif + + + + +/* 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"); + +#ifdef CONFIG_USB_SERIAL_GENERIC +MODULE_PARM(vendor, "h"); +MODULE_PARM_DESC(vendor, "User specified USB idVendor"); + +MODULE_PARM(product, "h"); +MODULE_PARM_DESC(product, "User specified USB idProduct"); +#endif diff -Nru a/drivers/usb/serial/usb-serial.h b/drivers/usb/serial/usb-serial.h --- a/drivers/usb/serial/usb-serial.h Wed Oct 2 22:39:59 2002 +++ b/drivers/usb/serial/usb-serial.h Wed Oct 2 22:39:59 2002 @@ -117,7 +117,7 @@ __u8 bulk_out_endpointAddress; wait_queue_head_t write_wait; - struct work_struct work; + struct work_struct work; int open_count; struct semaphore sem; void * private; @@ -256,6 +256,19 @@ extern int ezusb_set_reset (struct usb_serial *serial, unsigned char reset_bit); #endif +/* USB Serial console functions */ +#ifdef CONFIG_USB_SERIAL_CONSOLE +extern void usb_serial_console_init (int debug, int minor); +extern void usb_serial_console_exit (void); +#else +static inline void usb_serial_console_init (int debug, int minor) { } +static inline void usb_serial_console_exit (void) { } +#endif + +/* Functions needed by the usb serial console code */ +extern struct usb_serial *usb_serial_get_by_minor (unsigned int minor); +extern int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp); +extern int usb_serial_generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count); /* Inline functions to check the sanity of a pointer that is passed to us */ static inline int serial_paranoia_check (struct usb_serial *serial, const char *function) diff -Nru a/drivers/usb/serial/usbserial.c b/drivers/usb/serial/usbserial.c --- a/drivers/usb/serial/usbserial.c Wed Oct 2 22:39:59 2002 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,1950 +0,0 @@ -/* - * USB Serial Converter driver - * - * Copyright (C) 1999 - 2002 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 - * - * (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 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 - * 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 seperate - * 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 continous 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifdef MODULE -#undef CONFIG_USB_SERIAL_CONSOLE -#endif -#ifdef CONFIG_USB_SERIAL_CONSOLE -#include -#include -#endif - -#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 "v1.6" -#define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com, http://www.kroah.com/linux-usb/" -#define DRIVER_DESC "USB Serial Driver core" - -/* function prototypes for a "generic" type serial converter (no flow control, not all endpoints needed) */ -/* need to always compile these in, as some of the other devices use these functions as their own. */ -/* if a driver does not provide a function pointer, the generic function will be called. */ -static int generic_open (struct usb_serial_port *port, struct file *filp); -static void generic_close (struct usb_serial_port *port, struct file *filp); -static int generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count); -static int generic_write_room (struct usb_serial_port *port); -static int generic_chars_in_buffer (struct usb_serial_port *port); -static void generic_read_bulk_callback (struct urb *urb); -static void generic_write_bulk_callback (struct urb *urb); -static void generic_shutdown (struct usb_serial *serial); - - -#ifdef CONFIG_USB_SERIAL_GENERIC -static __u16 vendor = 0x05f9; -static __u16 product = 0xffff; - -static struct usb_device_id generic_device_ids[2]; /* Initially all zeroes. */ - -/* All of the device info needed for the Generic Serial Converter */ -static struct usb_serial_device_type generic_device = { - .owner = THIS_MODULE, - .name = "Generic", - .id_table = generic_device_ids, - .num_interrupt_in = NUM_DONT_CARE, - .num_bulk_in = NUM_DONT_CARE, - .num_bulk_out = NUM_DONT_CARE, - .num_ports = 1, - .shutdown = generic_shutdown, -}; - -/* 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 - -/* Driver structure we register with the USB core */ -static struct usb_driver usb_serial_driver = { - .name = "serial", - .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 int serial_refcount; -static struct tty_driver serial_tty_driver; -static struct tty_struct * serial_tty[SERIAL_TTY_MINORS]; -static struct termios * serial_termios[SERIAL_TTY_MINORS]; -static struct termios * serial_termios_locked[SERIAL_TTY_MINORS]; -static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */ -static LIST_HEAD(usb_serial_driver_list); - -#ifdef CONFIG_USB_SERIAL_CONSOLE -struct usbcons_info { - int magic; - int break_flag; - struct usb_serial_port *port; -}; - -static struct usbcons_info usbcons_info; -static struct console usbcons; -#endif /* CONFIG_USB_SERIAL_CONSOLE */ - -static struct usb_serial *get_serial_by_minor (unsigned int minor) -{ - return serial_table[minor]; -} - -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; -} - -#ifdef USES_EZUSB_FUNCTIONS -/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */ -#define CPUCS_REG 0x7F92 - -int ezusb_writememory (struct usb_serial *serial, int address, unsigned char *data, int length, __u8 bRequest) -{ - int result; - unsigned char *transfer_buffer; - - /* dbg("ezusb_writememory %x, %d", address, length); */ - if (!serial->dev) { - dbg("%s - no physical device present, failing.", __FUNCTION__); - return -ENODEV; - } - - transfer_buffer = kmalloc (length, GFP_KERNEL); - if (!transfer_buffer) { - err("%s - kmalloc(%d) failed.", __FUNCTION__, length); - return -ENOMEM; - } - memcpy (transfer_buffer, data, length); - result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), bRequest, 0x40, address, 0, transfer_buffer, length, 3*HZ); - kfree (transfer_buffer); - return result; -} - -int ezusb_set_reset (struct usb_serial *serial, unsigned char reset_bit) -{ - int response; - dbg("%s - %d", __FUNCTION__, reset_bit); - response = ezusb_writememory (serial, CPUCS_REG, &reset_bit, 1, 0xa0); - if (response < 0) { - err("%s- %d failed", __FUNCTION__, reset_bit); - } - return response; -} - -#endif /* USES_EZUSB_FUNCTIONS */ - -/***************************************************************************** - * 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 = get_serial_by_minor (minor(tty->device)); - - 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 = minor(tty->device) - serial->minor; - port = &serial->port[portNumber]; - tty->driver_data = port; - - down (&port->sem); - port->tty = tty; - - /* lock this module before we call it */ - if (serial->type->owner) - __MOD_INC_USE_COUNT(serial->type->owner); - - ++port->open_count; - if (port->open_count == 1) { - /* only call the device specific open if this - * is the first time the port is opened */ - if (serial->type->open) - retval = serial->type->open(port, filp); - else - retval = generic_open(port, filp); - if (retval) { - port->open_count = 0; - if (serial->type->owner) - __MOD_DEC_USE_COUNT(serial->type->owner); - } - } - - up (&port->sem); - return retval; -} - -static void __serial_close(struct usb_serial_port *port, struct file *filp) -{ - if (!port->open_count) { - dbg ("%s - port not opened", __FUNCTION__); - return; - } - - --port->open_count; - if (port->open_count <= 0) { - /* only call the device specific close if this - * port is being closed by the last owner */ - if (port->serial->type->close) - port->serial->type->close(port, filp); - else - generic_close(port, filp); - port->open_count = 0; - } - - if (port->serial->type->owner) - __MOD_DEC_USE_COUNT(port->serial->type->owner); -} - -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; - - down (&port->sem); - - dbg("%s - port %d", __FUNCTION__, port->number); - - /* if disconnect beat us to the punch here, there's nothing to do */ - if (tty->driver_data) { - __serial_close(port, filp); - } - - up (&port->sem); -} - -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; - - down (&port->sem); - - 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 if it is available */ - if (serial->type->write) - retval = serial->type->write(port, from_user, buf, count); - else - retval = generic_write(port, from_user, buf, count); - -exit: - up (&port->sem); - 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; - - down (&port->sem); - - 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->write_room) - retval = serial->type->write_room(port); - else - retval = generic_write_room(port); - -exit: - up (&port->sem); - 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; - - down (&port->sem); - - 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->chars_in_buffer) - retval = serial->type->chars_in_buffer(port); - else - retval = generic_chars_in_buffer(port); - -exit: - up (&port->sem); - 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; - - down (&port->sem); - - 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: - up (&port->sem); -} - -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; - - down (&port->sem); - - 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: - up (&port->sem); -} - -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; - - down (&port->sem); - - 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: - up (&port->sem); - 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; - - down (&port->sem); - - 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: - up (&port->sem); -} - -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; - - down (&port->sem); - - 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: - up (&port->sem); -} - -static void serial_shutdown (struct usb_serial *serial) -{ - dbg ("%s", __FUNCTION__); - - if (serial->type->shutdown) - serial->type->shutdown(serial); - else - generic_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 += sprintf (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION); - for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) { - serial = get_serial_by_minor(i); - if (serial == NULL) - continue; - - length += sprintf (page+length, "%d:", i); - if (serial->type->owner) - length += sprintf (page+length, " module:%s", serial->type->owner->name); - length += sprintf (page+length, " name:\"%s\"", serial->type->name); - length += sprintf (page+length, " vendor:%04x product:%04x", serial->vendor, serial->product); - length += sprintf (page+length, " num_ports:%d", serial->num_ports); - length += sprintf (page+length, " port:%d", i - serial->minor + 1); - - usb_make_path(serial->dev, tmp, sizeof(tmp)); - length += sprintf (page+length, " path:%s", tmp); - - length += sprintf (page+length, "\n"); - if ((length + begin) > (off + count)) - goto done; - if ((length + begin) < off) { - begin += length; - length = 0; - } - } - *eof = 1; -done: - if (off >= (length + begin)) - return 0; - *start = page + (off-begin); - return ((count < begin+length-off) ? count : begin+length-off); -} - -/***************************************************************************** - * generic devices specific driver functions - *****************************************************************************/ -static int generic_open (struct usb_serial_port *port, struct file *filp) -{ - struct usb_serial *serial = port->serial; - int result = 0; - - if (port_paranoia_check (port, __FUNCTION__)) - return -ENODEV; - - dbg("%s - port %d", __FUNCTION__, port->number); - - /* force low_latency on so that our tty_push actually forces the data through, - otherwise it is scheduled, and with high data rates (like with OHCI) data - can get lost. */ - if (port->tty) - port->tty->low_latency = 1; - - /* if we have a bulk interrupt, start reading from it */ - if (serial->num_bulk_in) { - /* Start reading from the device */ - usb_fill_bulk_urb (port->read_urb, serial->dev, - usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ((serial->type->read_bulk_callback) ? - serial->type->read_bulk_callback : - generic_read_bulk_callback), - port); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) - err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); - } - - return result; -} - -static void generic_cleanup (struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - - dbg("%s - port %d", __FUNCTION__, port->number); - - if (serial->dev) { - /* shutdown any bulk reads that might be going on */ - if (serial->num_bulk_out) - usb_unlink_urb (port->write_urb); - if (serial->num_bulk_in) - usb_unlink_urb (port->read_urb); - } -} - -static void generic_close (struct usb_serial_port *port, struct file * filp) -{ - dbg("%s - port %d", __FUNCTION__, port->number); - generic_cleanup (port); -} - -static int generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count) -{ - struct usb_serial *serial = port->serial; - int result; - - dbg("%s - port %d", __FUNCTION__, port->number); - - if (count == 0) { - dbg("%s - write request of 0 bytes", __FUNCTION__); - return (0); - } - - /* only do something if we have a bulk out endpoint */ - if (serial->num_bulk_out) { - if (port->write_urb->status == -EINPROGRESS) { - dbg("%s - already writing", __FUNCTION__); - return (0); - } - - count = (count > port->bulk_out_size) ? port->bulk_out_size : count; - - if (from_user) { - if (copy_from_user(port->write_urb->transfer_buffer, buf, count)) - return -EFAULT; - } - else { - memcpy (port->write_urb->transfer_buffer, buf, count); - } - - usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer); - - /* set up our urb */ - usb_fill_bulk_urb (port->write_urb, serial->dev, - usb_sndbulkpipe (serial->dev, - port->bulk_out_endpointAddress), - port->write_urb->transfer_buffer, count, - ((serial->type->write_bulk_callback) ? - serial->type->write_bulk_callback : - generic_write_bulk_callback), port); - - /* send the data out the bulk port */ - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) - err("%s - failed submitting write urb, error %d", __FUNCTION__, result); - else - result = count; - - return result; - } - - /* no bulk out, so return 0 bytes written */ - return (0); -} - -static int generic_write_room (struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - int room = 0; - - dbg("%s - port %d", __FUNCTION__, port->number); - - if (serial->num_bulk_out) { - if (port->write_urb->status != -EINPROGRESS) - room = port->bulk_out_size; - } - - dbg("%s - returns %d", __FUNCTION__, room); - return (room); -} - -static int generic_chars_in_buffer (struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - int chars = 0; - - dbg("%s - port %d", __FUNCTION__, port->number); - - if (serial->num_bulk_out) { - if (port->write_urb->status == -EINPROGRESS) - chars = port->write_urb->transfer_buffer_length; - } - - dbg("%s - returns %d", __FUNCTION__, chars); - return (chars); -} - -static void generic_read_bulk_callback (struct urb *urb) -{ - struct usb_serial_port *port = (struct usb_serial_port *)urb->context; - struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); - struct tty_struct *tty; - unsigned char *data = urb->transfer_buffer; - int i; - int result; - - dbg("%s - port %d", __FUNCTION__, port->number); - - if (!serial) { - dbg("%s - bad serial pointer, exiting", __FUNCTION__); - return; - } - - if (urb->status) { - dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); - return; - } - - usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data); - - tty = port->tty; - if (tty && urb->actual_length) { - for (i = 0; i < urb->actual_length ; ++i) { - /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */ - if(tty->flip.count >= TTY_FLIPBUF_SIZE) { - tty_flip_buffer_push(tty); - } - /* this doesn't actually push the data through unless tty->low_latency is set */ - tty_insert_flip_char(tty, data[i], 0); - } - tty_flip_buffer_push(tty); - } - - /* Continue trying to always read */ - usb_fill_bulk_urb (port->read_urb, serial->dev, - usb_rcvbulkpipe (serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ((serial->type->read_bulk_callback) ? - serial->type->read_bulk_callback : - generic_read_bulk_callback), port); - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (result) - err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); -} - -static void generic_write_bulk_callback (struct urb *urb) -{ - struct usb_serial_port *port = (struct usb_serial_port *)urb->context; - struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); - - dbg("%s - port %d", __FUNCTION__, port->number); - - if (!serial) { - dbg("%s - bad serial pointer, exiting", __FUNCTION__); - return; - } - - if (urb->status) { - dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); - return; - } - - usb_serial_port_softint((void *)port); - - schedule_work(&port->work); -} - -static void generic_shutdown (struct usb_serial *serial) -{ - int i; - - dbg("%s", __FUNCTION__); - - /* stop reads and writes on all ports */ - for (i=0; i < serial->num_ports; ++i) { - generic_cleanup (&serial->port[i]); - } -} - -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 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) { - err ("%s - out of memory", __FUNCTION__); - return NULL; - } - memset (serial, 0, sizeof(*serial)); - serial->dev = dev; - serial->type = type; - serial->interface = interface; - serial->vendor = dev->descriptor.idVendor; - serial->product = dev->descriptor.idProduct; - - 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_interface_descriptor *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) { - err ("%s - out of memory", __FUNCTION__); - return -ENODEV; - } - - /* if this device type has a probe function, call it */ - if (type->probe) { - if (type->owner) - __MOD_INC_USE_COUNT(type->owner); - retval = type->probe (serial); - if (type->owner) - __MOD_DEC_USE_COUNT(type->owner); - - if (retval < 0) { - dbg ("sub driver rejected device"); - kfree (serial); - return -ENODEV; - } - } - - /* descriptor matches, let's find the endpoints needed */ - /* check out the endpoints */ - iface_desc = &interface->altsetting[0]; - for (i = 0; i < iface_desc->bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i]; - - 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) -#if 0 - /* BEGIN HORRIBLE HACK FOR PL2303 */ - /* this is needed due to the looney way its endpoints are set up */ - if (ifnum == 1) { - 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))) { - /* check out the endpoints of the other interface*/ - interface = &dev->actconfig->interface[ifnum ^ 1]; - iface_desc = &interface->altsetting[0]; - for (i = 0; i < iface_desc->bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i]; - 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; - } - } - } - } - /* END HORRIBLE HACK FOR PL2303 */ -#endif -#endif - - /* found all that we need */ - info("%s converter detected", type->name); - -#ifdef CONFIG_USB_SERIAL_GENERIC - if (type == &generic_device) { - num_ports = num_bulk_out; - if (num_ports == 0) { - err("Generic device with no bulk out, not allowed."); - 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 (type->owner) - __MOD_INC_USE_COUNT(type->owner); - num_ports = type->calc_num_ports (serial); - if (type->owner) - __MOD_DEC_USE_COUNT(type->owner); - } - if (!num_ports) - num_ports = type->num_ports; - } - - if (get_free_serial (serial, num_ports, &minor) == NULL) { - err("No more free serial devices"); - 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; - - /* 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) { - err("No free urbs available"); - 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) { - err("Couldn't allocate bulk_in_buffer"); - 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) ? - serial->type->read_bulk_callback : - generic_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) { - err("No free urbs available"); - 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) { - err("Couldn't allocate bulk_out_buffer"); - 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) ? - serial->type->write_bulk_callback : - generic_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) { - err("No free urbs available"); - 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) { - err("Couldn't allocate interrupt_in_buffer"); - 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); - } - - /* initialize some parts of the port structures */ - /* 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); - dbg("%s - setting up %d port structures for this device", __FUNCTION__, max_endpoints); - for (i = 0; i < max_endpoints; ++i) { - port = &serial->port[i]; - port->number = i + serial->minor; - port->serial = serial; - port->magic = USB_SERIAL_PORT_MAGIC; - INIT_WORK(&port->work, usb_serial_port_softint, port); - init_MUTEX (&port->sem); - } - - /* if this device type has an attach function, call it */ - if (type->attach) { - if (type->owner) - __MOD_INC_USE_COUNT(type->owner); - retval = type->attach (serial); - if (type->owner) - __MOD_DEC_USE_COUNT(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 */ - dev_set_drvdata (&interface->dev, serial); - return 0; - } - } - - /* initialize the devfs nodes for this device and let the user know what ports we are bound to */ - for (i = 0; i < serial->num_ports; ++i) { - tty_register_devfs (&serial_tty_driver, 0, serial->port[i].number); - info("%s converter now attached to ttyUSB%d (or usb/tts/%d for devfs)", - type->name, serial->port[i].number, serial->port[i].number); - } - -#ifdef CONFIG_USB_SERIAL_CONSOLE - if (minor == 0) { - /* - * Call register_console() if this is the first device plugged - * in. If we call it earlier, then the callback to - * console_setup() will fail, as there is not a device seen by - * the USB subsystem yet. - */ - /* - * Register console. - * NOTES: - * console_setup() is called (back) immediately (from register_console). - * console_write() is called immediately from register_console iff - * CON_PRINTBUFFER is set in flags. - */ - dbg ("registering the USB serial console."); - register_console(&usbcons); - } -#endif - - /* success */ - dev_set_drvdata (&interface->dev, serial); - return 0; - - -probe_error: - for (i = 0; i < num_bulk_in; ++i) { - port = &serial->port[i]; - if (port->read_urb) - usb_free_urb (port->read_urb); - if (port->bulk_in_buffer) - kfree (port->bulk_in_buffer); - } - for (i = 0; i < num_bulk_out; ++i) { - port = &serial->port[i]; - if (port->write_urb) - usb_free_urb (port->write_urb); - if (port->bulk_out_buffer) - kfree (port->bulk_out_buffer); - } - for (i = 0; i < num_interrupt_in; ++i) { - port = &serial->port[i]; - if (port->interrupt_in_urb) - usb_free_urb (port->interrupt_in_urb); - if (port->interrupt_in_buffer) - kfree (port->interrupt_in_buffer); - } - - /* return the minor range that this device had */ - return_serial (serial); - - /* free up any memory that we allocated */ - kfree (serial); - return -EIO; -} - -void usb_serial_disconnect(struct usb_interface *interface) -{ - struct usb_serial *serial = dev_get_drvdata (&interface->dev); - struct usb_serial_port *port; - int i; - - dbg ("%s", __FUNCTION__); - - dev_set_drvdata (&interface->dev, NULL); - if (serial) { - /* fail all future close/read/write/ioctl/etc calls */ - for (i = 0; i < serial->num_ports; ++i) { - port = &serial->port[i]; - down (&port->sem); - if (port->tty != NULL) { - while (port->open_count > 0) { - __serial_close(port, NULL); - } - port->tty->driver_data = NULL; - } - up (&port->sem); - } - - serial->dev = NULL; - serial_shutdown (serial); - - for (i = 0; i < serial->num_ports; ++i) - serial->port[i].open_count = 0; - - for (i = 0; i < serial->num_bulk_in; ++i) { - port = &serial->port[i]; - if (port->read_urb) { - usb_unlink_urb (port->read_urb); - usb_free_urb (port->read_urb); - } - if (port->bulk_in_buffer) - kfree (port->bulk_in_buffer); - } - for (i = 0; i < serial->num_bulk_out; ++i) { - port = &serial->port[i]; - if (port->write_urb) { - usb_unlink_urb (port->write_urb); - usb_free_urb (port->write_urb); - } - if (port->bulk_out_buffer) - kfree (port->bulk_out_buffer); - } - for (i = 0; i < serial->num_interrupt_in; ++i) { - port = &serial->port[i]; - if (port->interrupt_in_urb) { - usb_unlink_urb (port->interrupt_in_urb); - usb_free_urb (port->interrupt_in_urb); - } - if (port->interrupt_in_buffer) - kfree (port->interrupt_in_buffer); - } - - for (i = 0; i < serial->num_ports; ++i) { - tty_unregister_devfs (&serial_tty_driver, serial->port[i].number); - info("%s converter now disconnected from ttyUSB%d", serial->type->name, serial->port[i].number); - } - - /* return the minor range that this device had */ - return_serial (serial); - - /* free up any memory that we allocated */ - kfree (serial); - } - info("device disconnected"); - -} - - -static struct tty_driver serial_tty_driver = { - .magic = TTY_DRIVER_MAGIC, - .driver_name = "usb-serial", -#ifndef CONFIG_DEVFS_FS - .name = "ttyUSB", -#else - .name = "usb/tts/%d", -#endif - .major = SERIAL_TTY_MAJOR, - .minor_start = 0, - .num = SERIAL_TTY_MINORS, - .type = TTY_DRIVER_TYPE_SERIAL, - .subtype = SERIAL_TYPE_NORMAL, - .flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, - - .refcount = &serial_refcount, - .table = serial_tty, - .termios = serial_termios, - .termios_locked = serial_termios_locked, - - .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, -}; - - -static int __init usb_serial_init(void) -{ - int i; - int result; - - /* Initalize our global data */ - for (i = 0; i < SERIAL_TTY_MINORS; ++i) { - serial_table[i] = NULL; - } - - /* register the tty driver */ - serial_tty_driver.init_termios = tty_std_termios; - serial_tty_driver.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - if (tty_register_driver (&serial_tty_driver)) { - err("%s - failed to register tty driver", __FUNCTION__); - return -1; - } - - /* register the USB driver */ - result = usb_register(&usb_serial_driver); - if (result < 0) { - tty_unregister_driver(&serial_tty_driver); - err("usb_register failed for the usb-serial driver. Error number %d", result); - return -1; - } - -#ifdef CONFIG_USB_SERIAL_GENERIC - generic_device_ids[0].idVendor = vendor; - generic_device_ids[0].idProduct = product; - generic_device_ids[0].match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT; - /* register our generic driver with ourselves */ - usb_serial_register (&generic_device); -#endif - - info(DRIVER_DESC " " DRIVER_VERSION); - - return 0; -} - - -static void __exit usb_serial_exit(void) -{ -#ifdef CONFIG_USB_SERIAL_CONSOLE - unregister_console(&usbcons); -#endif - -#ifdef CONFIG_USB_SERIAL_GENERIC - /* remove our generic driver */ - usb_serial_deregister (&generic_device); -#endif - - usb_deregister(&usb_serial_driver); - tty_unregister_driver(&serial_tty_driver); -} - - -module_init(usb_serial_init); -module_exit(usb_serial_exit); - - -int usb_serial_register(struct usb_serial_device_type *new_device) -{ - /* Add this device to our list of devices */ - list_add(&new_device->driver_list, &usb_serial_driver_list); - - info ("USB Serial support registered for %s", new_device->name); - - return 0; -} - - -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); -} - - - -/* 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); -#ifdef USES_EZUSB_FUNCTIONS - EXPORT_SYMBOL(ezusb_writememory); - EXPORT_SYMBOL(ezusb_set_reset); -#endif - - -#ifdef CONFIG_USB_SERIAL_CONSOLE -/* - * ------------------------------------------------------------ - * USB Serial console driver - * - * Much of the code here is copied from drivers/char/serial.c - * and implements a phony serial console in the same way that - * serial.c does so that in case some software queries it, - * it will get the same results. - * - * Things that are different from the way the serial port code - * does things, is that we call the lower level usb-serial - * driver code to initialize the device, and we set the initial - * console speeds based on the command line arguments. - * ------------------------------------------------------------ - */ - -#if 0 -static kdev_t usb_console_device(struct console *co) -{ - return mk_kdev(SERIAL_TTY_MAJOR, co->index); /* TBD */ -} -#endif - -/* - * The parsing of the command line works exactly like the - * serial.c code, except that the specifier is "ttyUSB" instead - * of "ttyS". - */ -static int __init usb_console_setup(struct console *co, char *options) -{ - struct usbcons_info *info = &usbcons_info; - int baud = 9600; - int bits = 8; - int parity = 'n'; - int doflow = 0; - int cflag = CREAD | HUPCL | CLOCAL; - char *s; - struct usb_serial *serial; - struct usb_serial_port *port; - int retval = 0; - struct tty_struct *tty; - struct termios *termios; - - dbg ("%s", __FUNCTION__); - - if (options) { - baud = simple_strtoul(options, NULL, 10); - s = options; - while (*s >= '0' && *s <= '9') - s++; - if (*s) parity = *s++; - if (*s) bits = *s++ - '0'; - if (*s) doflow = (*s++ == 'r'); - } - - /* build a cflag setting */ - switch (baud) { - case 1200: - cflag |= B1200; - break; - case 2400: - cflag |= B2400; - break; - case 4800: - cflag |= B4800; - break; - case 19200: - cflag |= B19200; - break; - case 38400: - cflag |= B38400; - break; - case 57600: - cflag |= B57600; - break; - case 115200: - cflag |= B115200; - break; - case 9600: - default: - cflag |= B9600; - /* - * Set this to a sane value to prevent a divide error - */ - baud = 9600; - break; - } - switch (bits) { - case 7: - cflag |= CS7; - break; - default: - case 8: - cflag |= CS8; - break; - } - switch (parity) { - case 'o': case 'O': - cflag |= PARODD; - break; - case 'e': case 'E': - cflag |= PARENB; - break; - } - co->cflag = cflag; - - /* grab the first serial port that happens to be connected */ - serial = get_serial_by_minor (0); - if (serial_paranoia_check (serial, __FUNCTION__)) { - /* no device is connected yet, sorry :( */ - err ("No USB device connected to ttyUSB0"); - return -ENODEV; - } - - port = &serial->port[0]; - down (&port->sem); - port->tty = NULL; - - info->port = port; - - ++port->open_count; - if (port->open_count == 1) { - /* only call the device specific open if this - * is the first time the port is opened */ - if (serial->type->open) - retval = serial->type->open(port, NULL); - else - retval = generic_open(port, NULL); - if (retval) - port->open_count = 0; - } - - up (&port->sem); - - if (retval) { - err ("could not open USB console port"); - return retval; - } - - if (serial->type->set_termios) { - /* build up a fake tty structure so that the open call has something - * to look at to get the cflag value */ - tty = kmalloc (sizeof (*tty), GFP_KERNEL); - if (!tty) { - err ("no more memory"); - return -ENOMEM; - } - termios = kmalloc (sizeof (*termios), GFP_KERNEL); - if (!termios) { - err ("no more memory"); - kfree (tty); - return -ENOMEM; - } - memset (tty, 0x00, sizeof(*tty)); - memset (termios, 0x00, sizeof(*termios)); - termios->c_cflag = cflag; - tty->termios = termios; - port->tty = tty; - - /* set up the initial termios settings */ - serial->type->set_termios(port, NULL); - port->tty = NULL; - kfree (termios); - kfree (tty); - } - - return retval; -} - -static void usb_console_write(struct console *co, const char *buf, unsigned count) -{ - static struct usbcons_info *info = &usbcons_info; - struct usb_serial_port *port = info->port; - struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); - int retval = -ENODEV; - - if (!serial || !port) - return; - - if (count == 0) - return; - - down (&port->sem); - - 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 if it is available */ - if (serial->type->write) - retval = serial->type->write(port, 0, buf, count); - else - retval = generic_write(port, 0, buf, count); - -exit: - up (&port->sem); - dbg("%s - return value (if we had one): %d", __FUNCTION__, retval); -} - -#if 0 -/* - * Receive character from the serial port - */ -static int usb_console_wait_key(struct console *co) -{ - static struct usbcons_info *info = &usbcons_info; - int c = 0; - - dbg("%s", __FUNCTION__); - - /* maybe use generic_read_bulk_callback ??? */ - - return c; -} -#endif - -static struct console usbcons = { - .name = "ttyUSB", /* only [8] */ - .write = usb_console_write, -#if 0 - .device = usb_console_device, /* TBD */ - .wait_key = usb_console_wait_key, /* TBD */ -#endif - .setup = usb_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, -}; - -#endif /* CONFIG_USB_SERIAL_CONSOLE */ - - -/* 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"); - -#ifdef CONFIG_USB_SERIAL_GENERIC -MODULE_PARM(vendor, "h"); -MODULE_PARM_DESC(vendor, "User specified USB idVendor"); - -MODULE_PARM(product, "h"); -MODULE_PARM_DESC(product, "User specified USB idProduct"); -#endif