/* * USB FTDI SIO driver * * Copyright (C) 1999 - 2001 * Greg Kroah-Hartman (greg@kroah.com) * Bill Ryder (bryder@sgi.com) * Copyright (C) 2002 * Kuba Ober (kuba@mareimbrium.org) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * See Documentation/usb/usb-serial.txt for more information on using this driver * * See http://ftdi-usb-sio.sourceforge.net for upto date testing info * and extra documentation * * (10/Mar/2004) ST * Added support for the FT2232C chip * * (21/Oct/2003) Ian Abbott * Renamed some VID/PID macros for Matrix Orbital and Perle Systems * devices. Removed Matrix Orbital and Perle Systems devices from the * 8U232AM device table, but left them in the FT232BM table, as they are * known to use only FT232BM. * * (17/Oct/2003) Scott Allen * Added vid/pid for Perle Systems UltraPort USB serial converters * * (21/Sep/2003) Ian Abbott * Added VID/PID for Omnidirectional Control Technology US101 USB to * RS-232 adapter (also rebadged as Dick Smith Electronics XH6381). * VID/PID supplied by Donald Gordon. * * (19/Aug/2003) Ian Abbott * Omitted some paranoid checks in write bulk callback that don't matter. * * (05/Aug/2003) Ian Abbott * Added VID/PID for ID TECH IDT1221U USB to RS-232 adapter. * VID/PID provided by Steve Briggs. * * (23/Jul/2003) Ian Abbott * Added PIDs for CrystalFontz 547, 633, 631, 635, 640 and 640 from * Wayne Wylupski. * * (10/Jul/2003) David Glance * Added PID for DSS-20 SyncStation cradle for Sony-Ericsson P800. * * (23/Jun/2003) Ian Abbott * Reduced flip buffer pushes and corrected a data length test in * ftdi_read_bulk_callback. * Defererence pointers after any paranoid checks, not before. * * (21/Jun/2003) Erik Nygren * Added support for Home Electronics Tira-1 IR tranceiver using FT232BM chip. * See . Only operates properly * at 100000 and RTS-CTS, so set custom divisor mode on startup. * Also force the Tira-1 and USB-UIRT to only use their custom baud rates. * * (18/Jun/2003) Ian Abbott * Added Device ID of the USB relais from Rudolf Gugler (backported from * Philipp Gühring's patch for 2.5.x kernel). * Moved read transfer buffer reallocation into startup function. * Free existing write urb and transfer buffer in startup function. * Only use urbs in write urb pool that were successfully allocated. * Moved some constant macros out of functions. * Minor whitespace and comment changes. * * (12/Jun/2003) David Norwood * Added support for USB-UIRT IR tranceiver using 8U232AM chip. * See . Only * operates properly at 312500, so set custom divisor mode on startup. * * (12/Jun/2003) Ian Abbott * Added Sealevel SeaLINK+ 210x, 220x, 240x, 280x vid/pids from Tuan Hoang * - I've eliminated some that don't seem to exist! * Added Home Electronics Tira-1 IR transceiver pid from Chris Horn * Some whitespace/coding-style cleanups * * (11/Jun/2003) Ian Abbott * Fixed unsafe spinlock usage in ftdi_write * * (24/Feb/2003) Richard Shooter * Increase read buffer size to improve read speeds at higher baud rates * (specifically tested with up to 1Mb/sec at 1.5M baud) * * (23/Feb/2003) John Wilkins * Added Xon/xoff flow control (activating support in the ftdi device) * Added vid/pid for Videonetworks/Homechoice (UK ISP) * * (23/Feb/2003) Bill Ryder * Added matrix orb device vid/pids from Wayne Wylupski * * (19/Feb/2003) Ian Abbott * For TIOCSSERIAL, set alt_speed to 0 when ASYNC_SPD_MASK value has * changed to something other than ASYNC_SPD_HI, ASYNC_SPD_VHI, * ASYNC_SPD_SHI or ASYNC_SPD_WARP. Also, unless ASYNC_SPD_CUST is in * force, don't bother changing baud rate when custom_divisor has changed. * * (18/Feb/2003) Ian Abbott * Fixed TIOCMGET handling to include state of DTR and RTS, the state * of which are now saved by set_dtr() and set_rts(). * Fixed improper storage class for buf in set_dtr() and set_rts(). * Added FT232BM chip type and support for its extra baud rates (compared * to FT8U232AM). * Took account of special case divisor values for highest baud rates of * FT8U232AM and FT232BM. * For TIOCSSERIAL, forced alt_speed to 0 when ASYNC_SPD_CUST kludge used, * as previous alt_speed setting is now stale. * Moved startup code common between the startup routines for the * different chip types into a common subroutine. * * (17/Feb/2003) Bill Ryder * Added write urb buffer pool on a per device basis * Added more checking for open file on callbacks (fixed OOPS) * Added CrystalFontz 632 and 634 PIDs * (thanx to CrystalFontz for the sample devices - they flushed out * some driver bugs) * Minor debugging message changes * Added throttle, unthrottle and chars_in_buffer functions * Fixed FTDI_SIO (the original device) bug * Fixed some shutdown handling * * * * * (07/Jun/2002) Kuba Ober * Changed FTDI_SIO_BASE_BAUD_TO_DIVISOR macro into ftdi_baud_to_divisor * function. It was getting too complex. * Fix the divisor calculation logic which was setting divisor of 0.125 * instead of 0.5 for fractional parts of divisor equal to 5/8, 6/8, 7/8. * Also make it bump up the divisor to next integer in case of 7/8 - it's * a better approximation. * * (25/Jul/2002) Bill Ryder inserted Dmitri's TIOCMIWAIT patch * Not tested by me but it doesn't break anything I use. * * (04/Jan/2002) Kuba Ober * Implemented 38400 baudrate kludge, where it can be substituted with other * values. That's the only way to set custom baudrates. * Implemented TIOCSSERIAL, TIOCGSERIAL ioctl's so that setserial is happy. * FIXME: both baudrate things should eventually go to usbserial.c as other * devices may need that functionality too. Actually, it can probably be * merged in serial.c somehow - too many drivers repeat this code over * and over. * Fixed baudrate forgetfulness - open() used to reset baudrate to 9600 every time. * Divisors for baudrates are calculated by a macro. * Small code cleanups. Ugly whitespace changes for Plato's sake only ;-]. * * (04/Nov/2001) Bill Ryder * Fixed bug in read_bulk_callback where incorrect urb buffer was used. * Cleaned up write offset calculation * Added write_room since default values can be incorrect for sio * Changed write_bulk_callback to use same queue_task as other drivers * (the previous version caused panics) * Removed port iteration code since the device only has one I/O port and it * was wrong anyway. * * (31/May/2001) gkh * Switched from using spinlock to a semaphore, which fixes lots of problems. * * (23/May/2001) Bill Ryder * Added runtime debug patch (thanx Tyson D Sawyer). * Cleaned up comments for 8U232 * Added parity, framing and overrun error handling * Added receive break handling. * * (04/08/2001) gb * Identify version on module load. * * (18/March/2001) Bill Ryder * (Not released) * Added send break handling. (requires kernel patch too) * Fixed 8U232AM hardware RTS/CTS etc status reporting. * Added flipbuf fix copied from generic device * * (12/3/2000) Bill Ryder * Added support for 8U232AM device. * Moved PID and VIDs into header file only. * Turned on low-latency for the tty (device will do high baudrates) * Added shutdown routine to close files when device removed. * More debug and error message cleanups. * * (11/13/2000) Bill Ryder * Added spinlock protected open code and close code. * Multiple opens work (sort of - see webpage mentioned above). * Cleaned up comments. Removed multiple PID/VID definitions. * Factorised cts/dtr code * Made use of __FUNCTION__ in dbg's * * (11/01/2000) Adam J. Richter * usb_device_id table support * * (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 * * (07/19/2000) gkh * Added module_init and module_exit functions to handle the fact that this * driver is a loadable module now. * * (04/04/2000) Bill Ryder * Fixed bugs in TCGET/TCSET ioctls (by removing them - they are * handled elsewhere in the tty io driver chain). * * (03/30/2000) Bill Ryder * Implemented lots of ioctls * Fixed a race condition in write * Changed some dbg's to errs * * (03/26/2000) gkh * Split driver up into device specific pieces. * */ /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */ /* Thanx to FTDI for so kindly providing details of the protocol required */ /* to talk to the device */ /* Thanx to gkh and the rest of the usb dev group for all code I have assimilated :-) */ #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 "ftdi_sio.h" /* * Version Information */ #define DRIVER_VERSION "v1.3.5" #define DRIVER_AUTHOR "Greg Kroah-Hartman , Bill Ryder , Kuba Ober " #define DRIVER_DESC "USB FTDI Serial Converters Driver" static struct usb_device_id id_table_sio [] = { { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) }, { } /* Terminating entry */ }; /* * The 8U232AM has the same API as the sio except for: * - it can support MUCH higher baudrates; up to: * o 921600 for RS232 and 2000000 for RS422/485 at 48MHz * o 230400 at 12MHz * so .. 8U232AM's baudrate setting codes are different * - it has a two byte status code. * - it returns characters every 16ms (the FTDI does it every 40ms) * * the bcdDevice value is used to differentiate FT232BM and FT245BM from * the earlier FT8U232AM and FT8U232BM. For now, include all known VID/PID * combinations in both tables. * FIXME: perhaps bcdDevice can also identify 12MHz devices, but I don't know * if those ever went into mass production. [Ian Abbott] */ static struct usb_device_id id_table_8U232AM [] = { { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_RELAIS_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_632_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_634_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_547_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_633_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_631_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_635_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_640_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_642_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_VNHCPCUSB_D_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_DSS20_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2101_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2102_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2103_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2104_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2201_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2201_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2202_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2202_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2203_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2203_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_3_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_4_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_3_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_4_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_3_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_4_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_3_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_4_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_5_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_6_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_7_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_8_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_3_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_4_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_5_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_6_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_7_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_8_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_1_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_2_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_3_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_4_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_5_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_6_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_7_PID, 0, 0x3ff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_8_PID, 0, 0x3ff) }, { USB_DEVICE_VER(IDTECH_VID, IDTECH_IDT1221U_PID, 0, 0x3ff) }, { USB_DEVICE_VER(OCT_VID, OCT_US101_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_1, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_R2X0, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_3, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_4, 0, 0x3ff) }, { } /* Terminating entry */ }; static struct usb_device_id id_table_FT232BM [] = { { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_RELAIS_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_632_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_634_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_547_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_633_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_631_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_635_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_640_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_642_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_VNHCPCUSB_D_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_DSS20_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_0_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_5_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_6_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2101_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2102_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2103_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2104_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2201_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2201_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2202_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2202_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2203_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2203_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2401_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2402_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2403_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_5_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_6_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_7_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2801_8_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_5_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_6_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_7_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2802_8_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_5_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_6_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_7_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(SEALEVEL_VID, SEALEVEL_2803_8_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(IDTECH_VID, IDTECH_IDT1221U_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(OCT_VID, OCT_US101_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_1, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_R2X0, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_3, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_4, 0x400, 0xffff) }, { } /* Terminating entry */ }; static struct usb_device_id id_table_FT2232C[] = { { USB_DEVICE_VER(FTDI_VID, FTDI_8U2232C_PID, 0x400, 0xffff) }, { } /* Terminating entry */ }; static struct usb_device_id id_table_USB_UIRT [] = { { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID) }, { } /* Terminating entry */ }; static struct usb_device_id id_table_HE_TIRA1 [] = { { USB_DEVICE_VER(FTDI_VID, FTDI_HE_TIRA1_PID, 0x400, 0xffff) }, { } /* Terminating entry */ }; static __devinitdata struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) }, { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) }, { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_633_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_631_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_635_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) }, { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) }, { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) }, { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_0_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_1_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_2_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_3_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_4_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_5_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_MTXORB_6_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID, 0x400, 0xffff) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2104_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2201_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2202_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2203_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_3_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2401_4_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_3_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2402_4_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_3_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2403_4_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_3_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_4_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_5_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_6_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_7_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2801_8_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_3_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_4_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_5_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_6_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_7_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2802_8_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_1_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_2_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_3_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_4_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_5_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_6_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_7_PID) }, { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2803_8_PID) }, { USB_DEVICE(IDTECH_VID, IDTECH_IDT1221U_PID) }, { USB_DEVICE(OCT_VID, OCT_US101_PID) }, { USB_DEVICE_VER(FTDI_VID, FTDI_HE_TIRA1_PID, 0x400, 0xffff) }, { USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID) }, { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_1) }, { USB_DEVICE(FTDI_VID, PROTEGO_R2X0) }, { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) }, { USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, id_table_combined); /* constants which set the number of write urb buffers */ #define NUM_URBS 32 /* Don't be tempted to increase this buffer to > 64 ! I tried it and it doesn't work */ #define URB_TRANSFER_BUFFER_SIZE 64 /* the device's max packet size */ /* Constants for read urb */ #define BUFSZ 512 #define PKTSZ 64 struct ftdi_private { ftdi_chip_type_t chip_type; /* type of the device, either SIO or FT8U232AM */ int baud_base; /* baud base clock for divisor setting */ int custom_divisor; /* custom_divisor kludge, this is for baud_base (different from what goes to the chip!) */ __u16 last_set_data_urb_value ; /* the last data state set - needed for doing a break */ int write_offset; /* This is the offset in the usb data block to write the serial data - * it is different between devices */ int flags; /* some ASYNC_xxxx flags are supported */ unsigned long last_dtr_rts; /* saved modem control outputs */ wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ char prev_status, diff_status; /* Used for TIOCMIWAIT */ __u16 interface; /* FT2232C */ struct urb *write_urb_pool[NUM_URBS]; spinlock_t write_urb_pool_lock; int force_baud; /* if non-zero, force the baud rate to this value */ int force_rtscts; /* if non-zero, force RTS-CTS to always be enabled */ }; /* Used for TIOCMIWAIT */ #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD) #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) /* End TIOCMIWAIT */ #define FTDI_IMPL_ASYNC_FLAGS = ( ASYNC_SPD_HI | ASYNC_SPD_VHI \ ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP ) /* function prototypes for a FTDI serial converter */ static int ftdi_SIO_startup (struct usb_serial *serial); static int ftdi_8U232AM_startup (struct usb_serial *serial); static int ftdi_FT232BM_startup (struct usb_serial *serial); static int ftdi_FT2232C_startup (struct usb_serial *serial); static int ftdi_USB_UIRT_startup (struct usb_serial *serial); static int ftdi_HE_TIRA1_startup (struct usb_serial *serial); static void ftdi_shutdown (struct usb_serial *serial); static int ftdi_open (struct usb_serial_port *port, struct file *filp); static void ftdi_close (struct usb_serial_port *port, struct file *filp); static int ftdi_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count); static int ftdi_write_room (struct usb_serial_port *port); static int ftdi_chars_in_buffer (struct usb_serial_port *port); static void ftdi_write_bulk_callback (struct urb *urb); static void ftdi_read_bulk_callback (struct urb *urb); static void ftdi_set_termios (struct usb_serial_port *port, struct termios * old); static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); static void ftdi_break_ctl (struct usb_serial_port *port, int break_state ); static void ftdi_throttle (struct usb_serial_port *port); static void ftdi_unthrottle (struct usb_serial_port *port); static unsigned short int ftdi_232am_baud_base_to_divisor (int baud, int base); static unsigned short int ftdi_232am_baud_to_divisor (int baud); static __u32 ftdi_232bm_baud_base_to_divisor (int baud, int base); static __u32 ftdi_232bm_baud_to_divisor (int baud); static struct usb_serial_device_type ftdi_SIO_device = { .owner = THIS_MODULE, .name = "FTDI SIO", .id_table = id_table_sio, .num_interrupt_in = 0, .num_bulk_in = 1, .num_bulk_out = 1, .num_ports = 1, .open = ftdi_open, .close = ftdi_close, .throttle = ftdi_throttle, .unthrottle = ftdi_unthrottle, .write = ftdi_write, .write_room = ftdi_write_room, .chars_in_buffer = ftdi_chars_in_buffer, .read_bulk_callback = ftdi_read_bulk_callback, .write_bulk_callback = ftdi_write_bulk_callback, .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, .startup = ftdi_SIO_startup, .shutdown = ftdi_shutdown, }; static struct usb_serial_device_type ftdi_8U232AM_device = { .owner = THIS_MODULE, .name = "FTDI 8U232AM Compatible", .id_table = id_table_8U232AM, .num_interrupt_in = 0, .num_bulk_in = 1, .num_bulk_out = 1, .num_ports = 1, .open = ftdi_open, .close = ftdi_close, .throttle = ftdi_throttle, .unthrottle = ftdi_unthrottle, .write = ftdi_write, .write_room = ftdi_write_room, .chars_in_buffer = ftdi_chars_in_buffer, .read_bulk_callback = ftdi_read_bulk_callback, .write_bulk_callback = ftdi_write_bulk_callback, .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, .startup = ftdi_8U232AM_startup, .shutdown = ftdi_shutdown, }; static struct usb_serial_device_type ftdi_FT232BM_device = { .owner = THIS_MODULE, .name = "FTDI FT232BM Compatible", .id_table = id_table_FT232BM, .num_interrupt_in = 0, .num_bulk_in = 1, .num_bulk_out = 1, .num_ports = 1, .open = ftdi_open, .close = ftdi_close, .throttle = ftdi_throttle, .unthrottle = ftdi_unthrottle, .write = ftdi_write, .write_room = ftdi_write_room, .chars_in_buffer = ftdi_chars_in_buffer, .read_bulk_callback = ftdi_read_bulk_callback, .write_bulk_callback = ftdi_write_bulk_callback, .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, .startup = ftdi_FT232BM_startup, .shutdown = ftdi_shutdown, }; static struct usb_serial_device_type ftdi_FT2232C_device = { .owner = THIS_MODULE, .name = "FTDI FT2232C Compatible", .id_table = id_table_FT2232C, .num_interrupt_in = 0, .num_bulk_in = 1, .num_bulk_out = 1, .num_ports = 1, .open = ftdi_open, .close = ftdi_close, .throttle = ftdi_throttle, .unthrottle = ftdi_unthrottle, .write = ftdi_write, .write_room = ftdi_write_room, .chars_in_buffer = ftdi_chars_in_buffer, .read_bulk_callback = ftdi_read_bulk_callback, .write_bulk_callback = ftdi_write_bulk_callback, .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, .startup = ftdi_FT2232C_startup, .shutdown = ftdi_shutdown, }; static struct usb_serial_device_type ftdi_USB_UIRT_device = { .owner = THIS_MODULE, .name = "USB-UIRT Infrared Receiver/Transmitter", .id_table = id_table_USB_UIRT, .num_interrupt_in = 0, .num_bulk_in = 1, .num_bulk_out = 1, .num_ports = 1, .open = ftdi_open, .close = ftdi_close, .throttle = ftdi_throttle, .unthrottle = ftdi_unthrottle, .write = ftdi_write, .write_room = ftdi_write_room, .chars_in_buffer = ftdi_chars_in_buffer, .read_bulk_callback = ftdi_read_bulk_callback, .write_bulk_callback = ftdi_write_bulk_callback, .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, .startup = ftdi_USB_UIRT_startup, .shutdown = ftdi_shutdown, }; /* The TIRA1 is based on a FT232BM which requires a fixed baud rate of 100000 * and which requires RTS-CTS to be enabled. */ static struct usb_serial_device_type ftdi_HE_TIRA1_device = { .owner = THIS_MODULE, .name = "Home-Electronics TIRA-1 IR Transceiver", .id_table = id_table_HE_TIRA1, .num_interrupt_in = 0, .num_bulk_in = 1, .num_bulk_out = 1, .num_ports = 1, .open = ftdi_open, .close = ftdi_close, .throttle = ftdi_throttle, .unthrottle = ftdi_unthrottle, .write = ftdi_write, .write_room = ftdi_write_room, .chars_in_buffer = ftdi_chars_in_buffer, .read_bulk_callback = ftdi_read_bulk_callback, .write_bulk_callback = ftdi_write_bulk_callback, .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, .startup = ftdi_HE_TIRA1_startup, .shutdown = ftdi_shutdown, }; #define WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */ /* High and low are for DTR, RTS etc etc */ #define HIGH 1 #define LOW 0 /* * *************************************************************************** * Utlity functions * *************************************************************************** */ static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base) { unsigned short int divisor; int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left if ((divisor3 & 0x7) == 7) divisor3 ++; // round x.7/8 up to x+1 divisor = divisor3 >> 3; divisor3 &= 0x7; if (divisor3 == 1) divisor |= 0xc000; else // 0.125 if (divisor3 >= 4) divisor |= 0x4000; else // 0.5 if (divisor3 != 0) divisor |= 0x8000; // 0.25 if (divisor == 1) divisor = 0; /* special case for maximum baud rate */ return divisor; } static unsigned short int ftdi_232am_baud_to_divisor(int baud) { return(ftdi_232am_baud_base_to_divisor(baud, 48000000)); } static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base) { static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 }; __u32 divisor; int divisor3 = base / 2 / baud; // divisor shifted 3 bits to the left divisor = divisor3 >> 3; divisor |= (__u32)divfrac[divisor3 & 0x7] << 14; /* Deal with special cases for highest baud rates. */ if (divisor == 1) divisor = 0; else // 1.0 if (divisor == 0x4001) divisor = 1; // 1.5 return divisor; } static __u32 ftdi_232bm_baud_to_divisor(int baud) { return(ftdi_232bm_baud_base_to_divisor(baud, 48000000)); } static int set_rts(struct usb_serial_port *port, int high_or_low) { struct ftdi_private * priv = (struct ftdi_private *)port->private; char buf[1]; unsigned ftdi_high_or_low; if (high_or_low) { ftdi_high_or_low = FTDI_SIO_SET_RTS_HIGH; priv->last_dtr_rts |= TIOCM_RTS; } else { ftdi_high_or_low = FTDI_SIO_SET_RTS_LOW; priv->last_dtr_rts &= ~TIOCM_RTS; } return(usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_MODEM_CTRL_REQUEST, FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, ftdi_high_or_low, priv->interface, buf, 0, WDR_TIMEOUT)); } static int set_dtr(struct usb_serial_port *port, int high_or_low) { struct ftdi_private * priv = (struct ftdi_private *)port->private; char buf[1]; unsigned ftdi_high_or_low; if (high_or_low) { ftdi_high_or_low = FTDI_SIO_SET_DTR_HIGH; priv->last_dtr_rts |= TIOCM_DTR; } else { ftdi_high_or_low = FTDI_SIO_SET_DTR_LOW; priv->last_dtr_rts &= ~TIOCM_DTR; } return(usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_MODEM_CTRL_REQUEST, FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, ftdi_high_or_low, priv->interface, buf, 0, WDR_TIMEOUT)); } static __u32 get_ftdi_divisor(struct usb_serial_port * port); static int change_speed(struct usb_serial_port *port) { char buf[1]; struct ftdi_private * priv = (struct ftdi_private *)port->private; __u16 urb_value; __u16 urb_index; __u32 urb_index_value; urb_index_value = get_ftdi_divisor(port); urb_value = (__u16)urb_index_value; urb_index = (__u16)(urb_index_value >> 16); urb_index |= priv->interface; return (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_BAUDRATE_REQUEST, FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE, urb_value, urb_index, buf, 0, 100) < 0); } static __u32 get_ftdi_divisor(struct usb_serial_port * port) { /* get_ftdi_divisor */ struct ftdi_private * priv = (struct ftdi_private *)port->private; __u32 div_value = 0; int div_okay = 1; char *chip_name = ""; int baud; /* * The logic involved in setting the baudrate can be cleanly split in 3 steps. * Obtaining the actual baud rate is a little tricky since unix traditionally * somehow ignored the possibility to set non-standard baud rates. * 1. Standard baud rates are set in tty->termios->c_cflag * 2. If these are not enough, you can set any speed using alt_speed as follows: * - set tty->termios->c_cflag speed to B38400 * - set your real speed in tty->alt_speed; it gets ignored when * alt_speed==0, (or) * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: * flags & ASYNC_SPD_MASK == ASYNC_SPD_[HI, VHI, SHI, WARP], this just * sets alt_speed to (HI: 57600, VHI: 115200, SHI: 230400, WARP: 460800) * ** Steps 1, 2 are done courtesy of tty_get_baud_rate * 3. You can also set baud rate by setting custom divisor as follows * - set tty->termios->c_cflag speed to B38400 * - call TIOCSSERIAL ioctl with (struct serial_struct) set as follows: * o flags & ASYNC_SPD_MASK == ASYNC_SPD_CUST * o custom_divisor set to baud_base / your_new_baudrate * ** Step 3 is done courtesy of code borrowed from serial.c - I should really * spend some time and separate+move this common code to serial.c, it is * replicated in nearly every serial driver you see. */ /* 1. Get the baud rate from the tty settings, this observes alt_speed hack */ baud = tty_get_baud_rate(port->tty); dbg("%s - tty_get_baud_rate reports speed %d", __FUNCTION__, baud); /* 2. Observe async-compatible custom_divisor hack, update baudrate if needed */ if (baud == 38400 && ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && (priv->custom_divisor)) { baud = priv->baud_base / priv->custom_divisor; dbg("%s - custom divisor %d sets baud rate to %d", __FUNCTION__, priv->custom_divisor, baud); } /* 3. Convert baudrate to device-specific divisor */ if (!baud) baud = 9600; switch(priv->chip_type) { case SIO: /* SIO chip */ chip_name = "SIO"; switch(baud) { case 300: div_value = ftdi_sio_b300; break; case 600: div_value = ftdi_sio_b600; break; case 1200: div_value = ftdi_sio_b1200; break; case 2400: div_value = ftdi_sio_b2400; break; case 4800: div_value = ftdi_sio_b4800; break; case 9600: div_value = ftdi_sio_b9600; break; case 19200: div_value = ftdi_sio_b19200; break; case 38400: div_value = ftdi_sio_b38400; break; case 57600: div_value = ftdi_sio_b57600; break; case 115200: div_value = ftdi_sio_b115200; break; } /* baud */ if (div_value == 0) { dbg("%s - Baudrate (%d) requested is not supported", __FUNCTION__, baud); div_value = ftdi_sio_b9600; div_okay = 0; } break; case FT8U232AM: /* 8U232AM chip */ chip_name = "FT8U232AM"; if (baud <= 3000000) { div_value = ftdi_232am_baud_to_divisor(baud); } else { dbg("%s - Baud rate too high!", __FUNCTION__); div_value = ftdi_232am_baud_to_divisor(9600); div_okay = 0; } break; case FT232BM: /* FT232BM chip */ case FT2232C: /* FT2232C chip */ chip_name = "FT232BM"; if (baud <= 3000000) { div_value = ftdi_232bm_baud_to_divisor(baud); } else { dbg("%s - Baud rate too high!", __FUNCTION__); div_value = ftdi_232bm_baud_to_divisor(9600); div_okay = 0; } break; } /* priv->chip_type */ if (div_okay) { dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s", __FUNCTION__, baud, (unsigned long)div_value, chip_name); } return(div_value); } static int get_serial_info(struct usb_serial_port * port, struct serial_struct * retinfo) { struct ftdi_private * priv = (struct ftdi_private*) port->private; struct serial_struct tmp; if (!retinfo) return -EFAULT; memset(&tmp, 0, sizeof(tmp)); tmp.flags = priv->flags; tmp.baud_base = priv->baud_base; tmp.custom_divisor = priv->custom_divisor; if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) return -EFAULT; return 0; } /* get_serial_info */ static int set_serial_info(struct usb_serial_port * port, struct serial_struct * newinfo) { /* set_serial_info */ struct ftdi_private * priv = (struct ftdi_private *) port->private; struct serial_struct new_serial; struct ftdi_private old_priv; if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) return -EFAULT; old_priv = * priv; /* Do error checking and permission checking */ if (!capable(CAP_SYS_ADMIN)) { if (((new_serial.flags & ~ASYNC_USR_MASK) != (priv->flags & ~ASYNC_USR_MASK))) return -EPERM; priv->flags = ((priv->flags & ~ASYNC_USR_MASK) | (new_serial.flags & ASYNC_USR_MASK)); priv->custom_divisor = new_serial.custom_divisor; goto check_and_exit; } if ((new_serial.baud_base != priv->baud_base) || (new_serial.baud_base < 9600)) return -EINVAL; /* Make the changes - these are privileged changes! */ priv->flags = ((priv->flags & ~ASYNC_FLAGS) | (new_serial.flags & ASYNC_FLAGS)); priv->custom_divisor = new_serial.custom_divisor; port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; check_and_exit: if ((old_priv.flags & ASYNC_SPD_MASK) != (priv->flags & ASYNC_SPD_MASK)) { if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) port->tty->alt_speed = 57600; else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) port->tty->alt_speed = 115200; else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) port->tty->alt_speed = 230400; else if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) port->tty->alt_speed = 460800; else port->tty->alt_speed = 0; } if (((old_priv.flags & ASYNC_SPD_MASK) != (priv->flags & ASYNC_SPD_MASK)) || (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && (old_priv.custom_divisor != priv->custom_divisor))) { change_speed(port); } return (0); } /* set_serial_info */ /* * *************************************************************************** * FTDI driver specific functions * *************************************************************************** */ /* Common startup subroutine */ /* Called from ftdi_SIO_startup, etc. */ static int ftdi_common_startup (struct usb_serial *serial) { struct usb_serial_port *port = &serial->port[0]; struct ftdi_private *priv; int i ; struct urb *urb; dbg("%s",__FUNCTION__); priv = kmalloc(sizeof(struct ftdi_private), GFP_KERNEL); if (!priv){ err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct ftdi_private)); return -ENOMEM; } memset(priv, 0, sizeof(*priv)); init_waitqueue_head(&priv->delta_msr_wait); /* This will push the characters through immediately rather than queue a task to deliver them */ priv->flags = ASYNC_LOW_LATENCY; /* Increase the size of read buffers */ if (port->bulk_in_buffer) { kfree (port->bulk_in_buffer); } port->bulk_in_buffer = kmalloc (BUFSZ, GFP_KERNEL); if (!port->bulk_in_buffer) { kfree (priv); return -ENOMEM; } if (port->read_urb) { port->read_urb->transfer_buffer = port->bulk_in_buffer; port->read_urb->transfer_buffer_length = BUFSZ; } /* Free port's existing write urb and transfer buffer. */ if (port->write_urb) { usb_free_urb (port->write_urb); port->write_urb = NULL; } if (port->bulk_out_buffer) { kfree (port->bulk_out_buffer); port->bulk_out_buffer = NULL; } /* create our write urb pool and transfer buffers */ spin_lock_init (&priv->write_urb_pool_lock); for (i = 0; i < NUM_URBS; ++i) { urb = usb_alloc_urb(0); priv->write_urb_pool[i] = urb; if (urb == NULL) { err("Unable to create new urb in urb pool"); break; } urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); if (!urb->transfer_buffer) { err("%s - out of memory for urb buffers.", __FUNCTION__); continue; } } /* Need at least one write urb in the pool */ if (i == 0) { kfree (priv); return -ENOMEM; } port->private = priv; return (0); } /* Startup for the SIO chip */ /* Called from usbserial:serial_probe */ static int ftdi_SIO_startup (struct usb_serial *serial) { struct ftdi_private *priv; int err; dbg("%s",__FUNCTION__); err = ftdi_common_startup(serial); if (err){ return (err); } priv = serial->port->private; priv->chip_type = SIO; priv->baud_base = 12000000 / 16; priv->write_offset = 1; return (0); } /* Startup for the 8U232AM chip */ /* Called from usbserial:serial_probe */ static int ftdi_8U232AM_startup (struct usb_serial *serial) { /* ftdi_8U232AM_startup */ struct ftdi_private *priv; int err; dbg("%s",__FUNCTION__); err = ftdi_common_startup(serial); if (err){ return (err); } priv = serial->port->private; priv->chip_type = FT8U232AM; priv->baud_base = 48000000 / 2; /* Would be / 16, but FTDI supports 0.125, 0.25 and 0.5 divisor fractions! */ return (0); } /* ftdi_8U232AM_startup */ /* Startup for the FT232BM chip */ /* Called from usbserial:serial_probe */ static int ftdi_FT232BM_startup (struct usb_serial *serial) { /* ftdi_FT232BM_startup */ struct ftdi_private *priv; int err; dbg("%s",__FUNCTION__); err = ftdi_common_startup(serial); if (err){ return (err); } priv = serial->port->private; priv->chip_type = FT232BM; priv->baud_base = 48000000 / 2; /* Would be / 16, but FT232BM supports multiple of 0.125 divisor fractions! */ return (0); } /* ftdi_FT232BM_startup */ /* Startup for the FT2232C chip */ /* Called from usbserial:serial_probe */ static int ftdi_FT2232C_startup (struct usb_serial *serial) { /* ftdi_FT2232C_startup */ struct ftdi_private *priv; int err; int inter; dbg("%s",__FUNCTION__); err = ftdi_common_startup(serial); if (err){ return (err); } priv = serial->port->private; priv->chip_type = FT2232C; inter = serial->interface->altsetting->bInterfaceNumber; if(inter) { priv->interface = INTERFACE_B; } else { priv->interface = INTERFACE_A; } priv->baud_base = 48000000 / 2; /* Would be / 16, but FT232BM supports multiple of 0.125 divisor fractions! */ return (0); } /* ftdi_FT2232C_startup */ /* Startup for the USB-UIRT device, which requires hardwired baudrate (38400 gets mapped to 312500) */ /* Called from usbserial:serial_probe */ static int ftdi_USB_UIRT_startup (struct usb_serial *serial) { /* ftdi_USB_UIRT_startup */ struct ftdi_private *priv; int err; dbg("%s",__FUNCTION__); err = ftdi_8U232AM_startup(serial); if (err){ return (err); } priv = serial->port->private; priv->flags |= ASYNC_SPD_CUST; priv->custom_divisor = 77; priv->force_baud = B38400; return (0); } /* ftdi_USB_UIRT_startup */ /* Startup for the HE-TIRA1 device, which requires hardwired * baudrate (38400 gets mapped to 100000) */ static int ftdi_HE_TIRA1_startup (struct usb_serial *serial) { /* ftdi_HE_TIRA1_startup */ struct ftdi_private *priv; int err; dbg("%s",__FUNCTION__); err = ftdi_FT232BM_startup(serial); if (err){ return (err); } priv = serial->port->private; priv->flags |= ASYNC_SPD_CUST; priv->custom_divisor = 240; priv->force_baud = B38400; priv->force_rtscts = 1; return (0); } /* ftdi_HE_TIRA1_startup */ /* ftdi_shutdown is called from usbserial:usb_serial_disconnect * it is called when the usb device is disconnected * * usbserial:usb_serial_disconnect * calls __serial_close for each open of the port * shutdown is called then (ie ftdi_shutdown) */ static void ftdi_shutdown (struct usb_serial *serial) { /* ftdi_shutdown */ struct usb_serial_port *port = &serial->port[0]; struct ftdi_private *priv = serial->port->private; int i; unsigned long flags; dbg("%s", __FUNCTION__); /* all open ports are closed at this point * (by usbserial.c:__serial_close, which calls ftdi_close) */ /* Only execute this if this is the final open port for this device */ if (port->open_count == 0){ spin_lock_irqsave (&priv->write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS && priv->write_urb_pool[i]; ++i) { /* FIXME - uncomment the following usb_unlink_urb call when * the host controllers get fixed to set urb->dev = NULL after * the urb is finished. Otherwise this call oopses. */ /* usb_unlink_urb(priv->write_urb_pool[i]); */ if (priv->write_urb_pool[i]->transfer_buffer) { kfree(priv->write_urb_pool[i]->transfer_buffer); priv->write_urb_pool[i]->transfer_buffer = NULL; } usb_free_urb (priv->write_urb_pool[i]); priv->write_urb_pool[i] = NULL; } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); /* usb_disconnect shuts down the port->read_urb so don't do it here */ /* as was done previously */ } if (serial->port->private){ kfree(serial->port->private); serial->port->private = NULL; } } /* ftdi_shutdown */ static int ftdi_open (struct usb_serial_port *port, struct file *filp) { /* ftdi_open */ struct termios tmp_termios; struct usb_serial *serial = port->serial; struct ftdi_private *priv = port->private; int result = 0; char buf[1]; /* Needed for the usb_control_msg I think */ dbg("%s", __FUNCTION__); port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; /* No error checking for this (will get errors later anyway) */ /* See ftdi_sio.h for description of what is reset */ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, FTDI_SIO_RESET_SIO, priv->interface, buf, 0, WDR_TIMEOUT); /* Termios defaults are set by usb_serial_init. We don't change port->tty->termios - this would loose speed settings, etc. This is same behaviour as serial.c/rs_open() - Kuba */ /* ftdi_set_termios will send usb control messages */ ftdi_set_termios(port, &tmp_termios); /* FIXME: Flow control might be enabled, so it should be checked - we have no control of defaults! */ /* Turn on RTS and DTR since we are not flow controlling by default */ if (set_dtr(port, HIGH) < 0) { err("%s Error from DTR HIGH urb", __FUNCTION__); } if (set_rts(port, HIGH) < 0){ err("%s Error from RTS HIGH urb", __FUNCTION__); } /* Start reading from the device */ 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, ftdi_read_bulk_callback, port); result = usb_submit_urb(port->read_urb); if (result) err("%s - failed submitting read urb, error %d", __FUNCTION__, result); return result; } /* ftdi_open */ /* * usbserial:__serial_close only calls ftdi_close if the point is open * * This only gets called when it is the last close * * */ static void ftdi_close (struct usb_serial_port *port, struct file *filp) { /* ftdi_close */ struct usb_serial *serial; unsigned int c_cflag = port->tty->termios->c_cflag; struct ftdi_private *priv = (struct ftdi_private *)port->private; char buf[1]; dbg("%s", __FUNCTION__); serial = get_usb_serial ( port, __FUNCTION__); if (!serial) return; if (serial->dev) { if (c_cflag & HUPCL){ /* Disable flow control */ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, 0, priv->interface, buf, 0, WDR_TIMEOUT) < 0) { err("error from flowcontrol urb"); } /* drop DTR */ if (set_dtr(port, LOW) < 0){ err("Error from DTR LOW urb"); } /* drop RTS */ if (set_rts(port, LOW) < 0) { err("Error from RTS LOW urb"); } /* shutdown our bulk read */ if (port->read_urb) { usb_unlink_urb (port->read_urb); } /* unlink the running write urbs */ } /* Note change no line is hupcl is off */ } /* if (serial->dev) */ } /* ftdi_close */ /* The SIO requires the first byte to have: * B0 1 * B1 0 * B2..7 length of message excluding byte 0 * * The new devices do not require this byte */ static int ftdi_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count) { /* ftdi_write */ struct usb_serial *serial = get_usb_serial ( port, __FUNCTION__); struct ftdi_private *priv = (struct ftdi_private *)port->private; unsigned char *first_byte; int data_offset ; /* will be 1 for the SIO and 0 otherwise */ int result; int user_bytes_sent = 0 ; /* amount of user data sent */ /* Variables for urb pool management */ unsigned char *current_position = (unsigned char *)buf; int i; struct urb *urb; /* pointer to urb from urb pool */ unsigned long flags; /* end of urb pool management */ dbg("%s port %d, %d bytes", __FUNCTION__, port->number, count); if (count == 0) { err("write request of 0 bytes"); goto exit; } data_offset = priv->write_offset; dbg("data_offset set to %d",data_offset); while (count > 0) { /* urb_byte_count = user_byte_count + data_offset */ int urb_byte_count; /* Number of bytes of URB data */ int user_byte_count; /* Number of bytes of user data */ /* Find a free urb in the list */ urb = NULL; spin_lock_irqsave (&(priv->write_urb_pool_lock), flags) ; for (i = 0 ; i < NUM_URBS && priv->write_urb_pool[i]; i++) { if (priv->write_urb_pool[i] -> status != -EINPROGRESS) { urb = priv->write_urb_pool[i]; /* Must make sure another write doesn't grab this */ urb->status = -EINPROGRESS; break; } } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); if (urb == NULL) { dbg("%s - no more free urbs", __FUNCTION__); goto exit; } /* Allocate memory for the urb if necessary */ if (urb->transfer_buffer == NULL) { urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); if (urb->transfer_buffer == NULL) { err("%s ran out of kernel memory for urb ...", __FUNCTION__); goto exit; } } /* The original sio needs the first byte to contain the bytecount * so the urb may be one byte bigger than the user data */ urb_byte_count = min (count + data_offset, URB_TRANSFER_BUFFER_SIZE); user_byte_count = urb_byte_count - data_offset; /* Copy in the data to send */ if (from_user) { if (copy_from_user(urb->transfer_buffer + data_offset, current_position, user_byte_count )){ return -EFAULT; } } else { memcpy(urb->transfer_buffer + data_offset, current_position, user_byte_count ); } first_byte = urb->transfer_buffer; if (data_offset > 0){ /* Write the control byte at the front of the packet*/ *first_byte = 1 | ((user_byte_count) << 2) ; dbg("%s Bytes: %d, First Byte: 0x%02x", __FUNCTION__,count, first_byte[0]); } usb_serial_debug_data (__FILE__, __FUNCTION__, urb_byte_count, first_byte); /* fill the buffer and send it */ FILL_BULK_URB(urb, serial->dev, usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), urb->transfer_buffer, urb_byte_count, ftdi_write_bulk_callback, port); urb->transfer_flags |= USB_QUEUE_BULK; /* uhci stack errors if it status set to -EINPROGRESS on */ /* urb submission, so clear status before submission. */ spin_lock_irqsave (&(priv->write_urb_pool_lock), flags) ; urb->status = 0; result = usb_submit_urb(urb); if (result) { spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); err("%s - failed submitting write urb, error %d", __FUNCTION__, result); user_bytes_sent = result; goto exit; } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); /* house keeping */ current_position += user_byte_count; user_bytes_sent += user_byte_count; count -= user_byte_count; } /* while count > 0 */ exit: dbg("%s write returning: %d", __FUNCTION__, user_bytes_sent); return user_bytes_sent; } /* ftdi_write */ /* This function may get called when the device is closed */ static void ftdi_write_bulk_callback (struct urb *urb) { struct usb_serial_port *port = (struct usb_serial_port *)urb->context; if (port_paranoia_check (port, __FUNCTION__)) return; dbg("%s - port %d", __FUNCTION__, port->number); if (urb->status) { dbg("nonzero write bulk status received: %d", urb->status); return; } if (port->open_count > 0){ queue_task(&port->tqueue, &tq_immediate); mark_bh(IMMEDIATE_BH); } } /* ftdi_write_bulk_callback */ static int ftdi_write_room( struct usb_serial_port *port ) { struct ftdi_private *priv = (struct ftdi_private *)port->private; int room = 0; int i; unsigned long flags; spin_lock_irqsave (&priv->write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS && priv->write_urb_pool[i]; i++) { if (priv->write_urb_pool[i]->status != -EINPROGRESS) { room += URB_TRANSFER_BUFFER_SIZE - priv->write_offset; } } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); dbg("%s - returns %d", __FUNCTION__, room); return(room); } /* ftdi_write_room */ static int ftdi_chars_in_buffer (struct usb_serial_port *port) { /* ftdi_chars_in_buffer */ unsigned long flags; int i; int chars = 0; struct ftdi_private *priv = (struct ftdi_private *)port->private; int data_offset = priv->write_offset; dbg("%s - port %d", __FUNCTION__, port->number); spin_lock_irqsave (&priv->write_urb_pool_lock, flags); /* tally up the number of bytes waiting */ for (i = 0; i < NUM_URBS && priv->write_urb_pool[i]; i++) { if (priv->write_urb_pool[i]->status == -EINPROGRESS) { chars += URB_TRANSFER_BUFFER_SIZE - data_offset; } } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); dbg("%s - returns %d", __FUNCTION__, chars); return (chars); } /* ftdi_chars_in_buffer */ static void ftdi_read_bulk_callback (struct urb *urb) { /* ftdi_read_bulk_callback */ struct usb_serial_port *port = (struct usb_serial_port *)urb->context; struct usb_serial *serial; struct tty_struct *tty; struct ftdi_private *priv; char error_flag; unsigned char *data = urb->transfer_buffer; int i; int result; int need_flip; int packet_offset; if (urb->number_of_packets > 0) { err("%s transfer_buffer_length %d actual_length %d number of packets %d",__FUNCTION__, urb->transfer_buffer_length, urb->actual_length, urb->number_of_packets ); err("%s transfer_flags %x USB_QUEUE_BULK %x ", __FUNCTION__,urb->transfer_flags, USB_QUEUE_BULK ); } dbg("%s", __FUNCTION__); if (port_paranoia_check (port, __FUNCTION__)) { return; } if (port->open_count <= 0) return; serial = get_usb_serial(port,__FUNCTION__); if (!serial){ dbg("%s - bad serial pointer - exiting",__FUNCTION__); return; } tty = port->tty; if (!tty) { dbg("%s - bad tty pointer - exiting",__FUNCTION__); return; } priv = (struct ftdi_private *) port->private; if (urb->status) { /* This will happen at close every time so it is a dbg not an err */ dbg("(this is ok on close) nonzero read bulk status received: %d", urb->status); return; } /* The first two bytes of every read packet are status */ if (urb->actual_length > 2) { usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data); } else { dbg("Status only: %03oo %03oo",data[0],data[1]); } /* TO DO -- check for hung up line and handle appropriately: */ /* send hangup */ /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */ /* if CD is dropped and the line is not CLOCAL then we should hangup */ need_flip = 0; for (packet_offset=0; packet_offset < urb->actual_length; packet_offset += PKTSZ) { /* Compare new line status to the old one, signal if different */ if (priv != NULL) { char new_status = data[packet_offset+0] & FTDI_STATUS_B0_MASK; if (new_status != priv->prev_status) { priv->diff_status |= new_status ^ priv->prev_status; wake_up_interruptible(&priv->delta_msr_wait); priv->prev_status = new_status; } } /* Handle errors and break */ error_flag = TTY_NORMAL; /* Although the device uses a bitmask and hence can have multiple */ /* errors on a packet - the order here sets the priority the */ /* error is returned to the tty layer */ if ( data[packet_offset+1] & FTDI_RS_OE ) { error_flag = TTY_OVERRUN; dbg("OVERRRUN error"); } if ( data[packet_offset+1] & FTDI_RS_BI ) { error_flag = TTY_BREAK; dbg("BREAK received"); } if ( data[packet_offset+1] & FTDI_RS_PE ) { error_flag = TTY_PARITY; dbg("PARITY error"); } if ( data[packet_offset+1] & FTDI_RS_FE ) { error_flag = TTY_FRAME; dbg("FRAMING error"); } if (urb->actual_length > packet_offset + 2) { for (i = 2; (i < PKTSZ) && ((i+packet_offset) < urb->actual_length); ++i) { /* have to make sure we don't overflow the buffer with tty_insert_flip_char's */ if(tty->flip.count >= TTY_FLIPBUF_SIZE) { tty_flip_buffer_push(tty); } /* Note that the error flag is duplicated for every character received since we don't know which character it applied to */ tty_insert_flip_char(tty, data[packet_offset+i], error_flag); } need_flip = 1; } #ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW /* if a parity error is detected you get status packets forever until a character is sent without a parity error. This doesn't work well since the application receives a never ending stream of bad data - even though new data hasn't been sent. Therefore I (bill) have taken this out. However - this might make sense for framing errors and so on so I am leaving the code in for now. */ else { if (error_flag != TTY_NORMAL){ dbg("error_flag is not normal"); /* In this case it is just status - if that is an error send a bad character */ if(tty->flip.count >= TTY_FLIPBUF_SIZE) { tty_flip_buffer_push(tty); } tty_insert_flip_char(tty, 0xff, error_flag); need_flip = 1; } } #endif } /* "for(packet_offset=0..." */ /* Low latency */ if (need_flip) { tty_flip_buffer_push(tty); } /* if the port is closed stop trying to read */ if (port->open_count > 0){ /* Continue trying to always read */ 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, ftdi_read_bulk_callback, port); result = usb_submit_urb(port->read_urb); if (result) err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); } return; } /* ftdi_read_bulk_callback */ static void ftdi_break_ctl( struct usb_serial_port *port, int break_state ) { struct usb_serial *serial = port->serial; struct ftdi_private *priv = (struct ftdi_private *)port->private; __u16 urb_value = 0; char buf[1]; /* break_state = -1 to turn on break, and 0 to turn off break */ /* see drivers/char/tty_io.c to see it used */ /* last_set_data_urb_value NEVER has the break bit set in it */ if (break_state) { urb_value = priv->last_set_data_urb_value | FTDI_SIO_SET_BREAK; } else { urb_value = priv->last_set_data_urb_value; } if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_SET_DATA_REQUEST, FTDI_SIO_SET_DATA_REQUEST_TYPE, urb_value , 0, buf, priv->interface, WDR_TIMEOUT) < 0) { err("%s FAILED to enable/disable break state (state was %d)", __FUNCTION__,break_state); } dbg("%s break state is %d - urb is %d", __FUNCTION__,break_state, urb_value); } /* old_termios contains the original termios settings and tty->termios contains * the new setting to be used * WARNING: set_termios calls this with old_termios in kernel space */ static void ftdi_set_termios (struct usb_serial_port *port, struct termios *old_termios) { /* ftdi_termios */ struct usb_serial *serial = port->serial; unsigned int cflag; struct ftdi_private *priv = (struct ftdi_private *)port->private; __u16 urb_value; /* will hold the new flags */ char buf[1]; /* Perhaps I should dynamically alloc this? */ // Added for xon/xoff support unsigned int iflag = port->tty->termios->c_iflag; unsigned char vstop; unsigned char vstart; dbg("%s", __FUNCTION__); /* Force baud rate if this device requires it, unless it is set to B0. */ if (priv->force_baud && ((port->tty->termios->c_cflag & CBAUD) != B0)) { dbg("%s: forcing baud rate for this device", __FUNCTION__); port->tty->termios->c_cflag &= ~CBAUD; port->tty->termios->c_cflag |= priv->force_baud; } /* Force RTS-CTS if this device requires it. */ if (priv->force_rtscts) { dbg("%s: forcing rtscts for this device", __FUNCTION__); port->tty->termios->c_cflag |= CRTSCTS; } cflag = port->tty->termios->c_cflag; /* FIXME -For this cut I don't care if the line is really changing or not - so just do the change regardless - should be able to compare old_termios and tty->termios */ /* NOTE These routines can get interrupted by ftdi_sio_read_bulk_callback - need to examine what this means - don't see any problems yet */ /* Set number of data bits, parity, stop bits */ urb_value = 0; urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 : FTDI_SIO_SET_DATA_STOP_BITS_1); urb_value |= (cflag & PARENB ? (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD : FTDI_SIO_SET_DATA_PARITY_EVEN) : FTDI_SIO_SET_DATA_PARITY_NONE); if (cflag & CSIZE) { switch (cflag & CSIZE) { case CS5: urb_value |= 5; dbg("Setting CS5"); break; case CS6: urb_value |= 6; dbg("Setting CS6"); break; case CS7: urb_value |= 7; dbg("Setting CS7"); break; case CS8: urb_value |= 8; dbg("Setting CS8"); break; default: err("CSIZE was set but not CS5-CS8"); } } /* This is needed by the break command since it uses the same command - but is * or'ed with this value */ priv->last_set_data_urb_value = urb_value; if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_SET_DATA_REQUEST, FTDI_SIO_SET_DATA_REQUEST_TYPE, urb_value , priv->interface, buf, 0, 100) < 0) { err("%s FAILED to set databits/stopbits/parity", __FUNCTION__); } /* Now do the baudrate */ if ((cflag & CBAUD) == B0 ) { /* Disable flow control */ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, 0, priv->interface, buf, 0, WDR_TIMEOUT) < 0) { err("%s error from disable flowcontrol urb", __FUNCTION__); } /* Drop RTS and DTR */ if (set_dtr(port, LOW) < 0){ err("%s Error from DTR LOW urb", __FUNCTION__); } /*If this is included HW flow control fails!*/ /* if (set_rts(port, LOW) < 0){ err("%s Error from RTS LOW urb", __FUNCTION__); }*/ } else { /* set the baudrate determined before */ if (change_speed(port)) { err("%s urb failed to set baurdrate", __FUNCTION__); } } /* Set flow control */ /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */ if (cflag & CRTSCTS) { dbg("%s Setting to CRTSCTS flow control", __FUNCTION__); if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface), buf, 0, WDR_TIMEOUT) < 0) { err("urb failed to set to rts/cts flow control"); } } else { /* * Xon/Xoff code * * Check the IXOFF status in the iflag component of the termios structure * if IXOFF is not set, the pre-xon/xoff code is executed. */ if (iflag & IXOFF) { dbg("%s request to enable xonxoff iflag=%04x",__FUNCTION__,iflag); // Try to enable the XON/XOFF on the ftdi_sio // Set the vstart and vstop -- could have been done up above where // a lot of other dereferencing is done but that would be very // inefficient as vstart and vstop are not always needed vstart=port->tty->termios->c_cc[VSTART]; vstop=port->tty->termios->c_cc[VSTOP]; urb_value=(vstop << 8) | (vstart); if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, urb_value , (FTDI_SIO_XON_XOFF_HS | priv->interface), buf, 0, WDR_TIMEOUT) < 0) { err("urb failed to set to xon/xoff flow control"); } } else { /* else clause to only run if cfag ! CRTSCTS and iflag ! XOFF */ /* CHECKME Assuming XON/XOFF handled by tty stack - not by device */ dbg("%s Turning off hardware flow control", __FUNCTION__); if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, 0, priv->interface, buf, 0, WDR_TIMEOUT) < 0) { err("urb failed to clear flow control"); } } } return; } /* ftdi_termios */ static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) { struct usb_serial *serial = port->serial; struct ftdi_private *priv = (struct ftdi_private *)port->private; __u16 urb_value=0; /* Will hold the new flags */ char buf[2]; int ret, mask; dbg("%s cmd 0x%04x", __FUNCTION__, cmd); /* Based on code from acm.c and others */ switch (cmd) { case TIOCMGET: dbg("%s TIOCMGET", __FUNCTION__); switch (priv->chip_type) { case SIO: /* Request the status from the device */ if ((ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), FTDI_SIO_GET_MODEM_STATUS_REQUEST, FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, 0, priv->interface, buf, 1, WDR_TIMEOUT)) < 0 ) { err("%s Could not get modem status of device - err: %d", __FUNCTION__, ret); return(ret); } break; case FT8U232AM: case FT232BM: case FT2232C: /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same format as the data returned from the in point */ if ((ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), FTDI_SIO_GET_MODEM_STATUS_REQUEST, FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, 0, priv->interface, buf, 2, WDR_TIMEOUT)) < 0 ) { err("%s Could not get modem status of device - err: %d", __FUNCTION__, ret); return(ret); } break; default: return -EFAULT; break; } return put_user((buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) | (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) | (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) | (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0) | priv->last_dtr_rts, (unsigned long *) arg); break; case TIOCMSET: /* Turns on and off the lines as specified by the mask */ dbg("%s TIOCMSET", __FUNCTION__); if (get_user(mask, (unsigned long *) arg)) return -EFAULT; urb_value = ((mask & TIOCM_DTR) ? HIGH : LOW); if ((ret = set_dtr(port, urb_value)) < 0){ err("Error from DTR set urb (TIOCMSET)"); return(ret); } urb_value = ((mask & TIOCM_RTS) ? HIGH : LOW); if ((ret = set_rts(port, urb_value)) < 0){ err("Error from RTS set urb (TIOCMSET)"); return(ret); } return(0); break; case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */ dbg("%s TIOCMBIS", __FUNCTION__); if (get_user(mask, (unsigned long *) arg)) return -EFAULT; if (mask & TIOCM_DTR){ if ((ret = set_dtr(port, HIGH)) < 0) { err("Urb to set DTR failed"); return(ret); } } if (mask & TIOCM_RTS) { if ((ret = set_rts(port, HIGH)) < 0){ err("Urb to set RTS failed"); return(ret); } } return(0); break; case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */ dbg("%s TIOCMBIC", __FUNCTION__); if (get_user(mask, (unsigned long *) arg)) return -EFAULT; if (mask & TIOCM_DTR){ if ((ret = set_dtr(port, LOW)) < 0){ err("Urb to unset DTR failed"); return(ret); } } if (mask & TIOCM_RTS) { if ((ret = set_rts(port, LOW)) < 0){ err("Urb to unset RTS failed"); return(ret); } } return(0); break; /* * I had originally implemented TCSET{A,S}{,F,W} and * TCGET{A,S} here separately, however when testing I * found that the higher layers actually do the termios * conversions themselves and pass the call onto * ftdi_sio_set_termios. * */ case TIOCGSERIAL: /* gets serial port data */ return get_serial_info(port, (struct serial_struct *) arg); case TIOCSSERIAL: /* sets serial port data */ return set_serial_info(port, (struct serial_struct *) arg); /* * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change * - mask passed in arg for lines of interest * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) * Caller should use TIOCGICOUNT to see which one it was. * * This code is borrowed from linux/drivers/char/serial.c */ case TIOCMIWAIT: while (priv != NULL) { interruptible_sleep_on(&priv->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; else { char diff = priv->diff_status; if (diff == 0) { return -EIO; /* no change => error */ } /* Consume all events */ priv->diff_status = 0; /* Return 0 if caller wanted to know about these bits */ if ( ((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) || ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) || ((arg & TIOCM_CD) && (diff & FTDI_RS0_RLSD)) || ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS)) ) { return 0; } /* * Otherwise caller can't care less about what happened, * and so we continue to wait for more events. */ } } return(0); break; default: break; } /* This is not necessarily an error - turns out the higher layers will do * some ioctls itself (see comment above) */ dbg("%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h", __FUNCTION__, cmd); return(-ENOIOCTLCMD); } /* ftdi_ioctl */ static void ftdi_throttle (struct usb_serial_port *port) { dbg("%s - port %d", __FUNCTION__, port->number); usb_unlink_urb (port->read_urb); } static void ftdi_unthrottle (struct usb_serial_port *port) { int result; struct usb_serial *serial = port->serial; dbg("%s - port %d", __FUNCTION__, port->number); port->read_urb->dev = serial->dev; 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, ftdi_read_bulk_callback, port); result = usb_submit_urb(port->read_urb); if (result) err("%s - failed submitting read urb, error %d", __FUNCTION__, result); } static int __init ftdi_init (void) { dbg("%s", __FUNCTION__); usb_serial_register (&ftdi_SIO_device); usb_serial_register (&ftdi_8U232AM_device); usb_serial_register (&ftdi_FT232BM_device); usb_serial_register (&ftdi_FT2232C_device); usb_serial_register (&ftdi_USB_UIRT_device); usb_serial_register (&ftdi_HE_TIRA1_device); info(DRIVER_VERSION ":" DRIVER_DESC); return 0; } static void __exit ftdi_exit (void) { dbg("%s", __FUNCTION__); usb_serial_deregister (&ftdi_HE_TIRA1_device); usb_serial_deregister (&ftdi_USB_UIRT_device); usb_serial_deregister (&ftdi_FT2232C_device); usb_serial_deregister (&ftdi_FT232BM_device); usb_serial_deregister (&ftdi_8U232AM_device); usb_serial_deregister (&ftdi_SIO_device); } module_init(ftdi_init); module_exit(ftdi_exit); MODULE_AUTHOR( DRIVER_AUTHOR ); MODULE_DESCRIPTION( DRIVER_DESC ); MODULE_LICENSE("GPL"); MODULE_PARM(debug, "i"); MODULE_PARM_DESC(debug, "Debug enabled or not");