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linux-pinenote/drivers/usb/serial/ftdi_sio.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/*
* 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
*
* (21/Jul/2004) Ian Abbott
* Incorporated Steven Turner's code to add support for the FT2232C chip.
* The prelimilary port to the 2.6 kernel was by Rus V. Brushkoff. I have
* fixed a couple of things.
*
* (27/May/2004) Ian Abbott
* Improved throttling code, mostly stolen from the WhiteHEAT driver.
*
* (26/Mar/2004) Jan Capek
* Added PID's for ICD-U20/ICD-U40 - incircuit PIC debuggers from CCS Inc.
*
* (09/Feb/2004) Ian Abbott
* Changed full name of USB-UIRT device to avoid "/" character.
* Added FTDI's alternate PID (0x6006) for FT232/245 devices.
* Added PID for "ELV USB Module UO100" from Stefan Frings.
*
* (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
* Freed urb's transfer buffer in write bulk callback.
* Omitted some paranoid checks in write bulk callback that don't matter.
* Scheduled work in write bulk callback regardless of port's open count.
*
* (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.
*
* (27/Jun/2003) Ian Abbott
* Reworked the urb handling logic. We have no more pool, but dynamically
* allocate the urb and the transfer buffer on the fly. In testing this
* does not incure any measurable overhead. This also relies on the fact
* that we have proper reference counting logic for urbs. I nicked this
* from Greg KH's Visor driver.
*
* (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
[PATCH] USB: Spelling fixes for drivers/usb. Here are some spelling corrections for drivers/usb. cancelation -> cancellation succesful -> successful cancelation -> cancellation decriptor -> descriptor Initalize -> Initialize wierd -> weird Protocoll -> Protocol occured -> occurred successfull -> successful Procesing -> Processing devide -> divide Isochronuous -> Isochronous noticable -> noticeable Basicly -> Basically transfering -> transferring intialize -> initialize Incomming -> Incoming additionnal -> additional asume -> assume Unfortunatly -> Unfortunately retreive -> retrieve tranceiver -> transceiver Compatiblity -> Compatibility Incorprated -> Incorporated existance -> existence Ununsual -> Unusual Signed-off-by: Steven Cole <elenstev@mesatop.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-03 19:07:24 -06:00
* Added support for Home Electronics Tira-1 IR transceiver using FT232BM chip.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
* See <http://www.home-electro.com/tira1.htm>. 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 G<EFBFBD>hring'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
[PATCH] USB: Spelling fixes for drivers/usb. Here are some spelling corrections for drivers/usb. cancelation -> cancellation succesful -> successful cancelation -> cancellation decriptor -> descriptor Initalize -> Initialize wierd -> weird Protocoll -> Protocol occured -> occurred successfull -> successful Procesing -> Processing devide -> divide Isochronuous -> Isochronous noticable -> noticeable Basicly -> Basically transfering -> transferring intialize -> initialize Incomming -> Incoming additionnal -> additional asume -> assume Unfortunatly -> Unfortunately retreive -> retrieve tranceiver -> transceiver Compatiblity -> Compatibility Incorprated -> Incorporated existance -> existence Ununsual -> Unusual Signed-off-by: Steven Cole <elenstev@mesatop.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-03 19:07:24 -06:00
* Added support for USB-UIRT IR transceiver using 8U232AM chip.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
* See <http://home.earthlink.net/~jrhees/USBUIRT/index.htm>. 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 <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
#include <linux/serial.h>
[PATCH] USB: move usb-serial.h to include/linux/usb/ USB serial outside of the kernel tree can not build properly due to usb-serial.h being buried down in the source tree. This patch moves the location of the file to include/linux/usb and fixes up all of the usb serial drivers to handle the move properly. Cc: Sergei Organov <osv@javad.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-11 21:22:58 -07:00
#include <linux/usb/serial.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
#include "ftdi_sio.h"
/*
* Version Information
*/
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
#define DRIVER_VERSION "v1.4.3"
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
#define DRIVER_DESC "USB FTDI Serial Converters Driver"
static int debug;
[PATCH] USB ftdi_sio: user specified VID/PID ftdi_sio: Support one user specified vendor and product ID via a couple of new module parameters. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-28 18:40:32 +01:00
static __u16 vendor = FTDI_VID;
static __u16 product;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
/* struct ftdi_sio_quirk is used by devices requiring special attention. */
struct ftdi_sio_quirk {
void (*setup)(struct usb_serial *); /* Special settings during startup. */
};
static void ftdi_USB_UIRT_setup (struct usb_serial *serial);
static void ftdi_HE_TIRA1_setup (struct usb_serial *serial);
static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
.setup = ftdi_USB_UIRT_setup,
};
static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
.setup = ftdi_HE_TIRA1_setup,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
};
/*
* 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.
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
* FIXME: perhaps bcdDevice can also identify 12MHz FT8U232AM devices,
* but I don't know if those ever went into mass production. [Ian Abbott]
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
*/
static struct usb_device_id id_table_combined [] = {
USB: ftdi_sio driver - new PIDs Signed-off-by: Jonathan Davies <jjd27@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-09 10:48:03 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
[PATCH] USB: ftdi_sio: add device id for ACT Solutions HomePro ZWave interface Signed-off-by: Razvan Gavril <razvan.g@plutohome.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-05-04 11:35:49 +03:00
{ USB_DEVICE(FTDI_VID, FTDI_ACTZWAVE_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) },
[PATCH] USB: ftdi_sio: Adds support for iPlus device. Adds support in ftdi_sio usbserial driver for USB modems sold by Plus GSM Company in Poland. Signed-off-by: Luiz Fernando Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-11 15:52:41 -03:00
{ USB_DEVICE(FTDI_VID, FTDI_IPLUS_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
[PATCH] USB: new device ids for ftdi_sio driver Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-23 17:36:21 +02:00
{ USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
{ USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
{ USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_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) },
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_1_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_2_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_3_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
USB: Additional PID for the ftdi_sio driver Here's a short patch which adds one PID to the set of devices supported by the ftdi_sio driver. The device in question is a DLP module used as part of a ham radio USB-to-packet adapter. From: Dave Platt <dplatt@radagast.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-18 21:26:54 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ 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: add SeaLevel 2106 SeaLINK support to ftdi_sio We have a couple of these USB-Serial converters around; they're slightly different from the 2104 models in that they can handle 500Kb/sec over RS422. The existing ftdi driver seems to work just fine if we add in the appropriate IDs. Patch is against 2.6.17.6, but should apply cleanly to pretty much anything recent. From: Justin Carlson <justinca@qatar.cmu.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-24 11:52:12 +03:00
{ USB_DEVICE(SEALEVEL_VID, SEALEVEL_2106_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ 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) },
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_HE_TIRA1_PID),
.driver_info = (kernel_ulong_t)&ftdi_HE_TIRA1_quirk },
{ USB_DEVICE(FTDI_VID, FTDI_USB_UIRT_PID),
.driver_info = (kernel_ulong_t)&ftdi_USB_UIRT_quirk },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ 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) },
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E808_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E809_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80A_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80B_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80C_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80D_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80E_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E80F_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E888_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E889_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88A_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88B_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88C_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88D_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88E_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_GUDEADS_E88F_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
[PATCH] USB: ftdi_sio: new PID for ELV UM100 ftdi_sio: Add PID for "ELV USB Module UM100". PID sent by Armin Laugher. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-17 15:12:13 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
[PATCH] USB ftdi_sio: New IDs for ELV, Xsens and Falcom products This patch for the ftdi_sio driver adds a bunch of new devices and fixes an incorrect PID: o Fix PID for ELV UO100 (the PID was in fact for ELV UR100). o Add PID ELV UR100 (see above) and ELV ALC 8500 Expert. o Add a whole bunch of other PIDs for ELV USB devices, commented out for now as they may be used by other drivers eventually. (Christian Abt of ELV.de submitted a full list of devices including an indication of which set of drivers are used by default in the MS Windows world. We decided to comment out the devices that use FTDI's D2XX Windows drivers by default.) o Add PIDs for eight devices from Xsens Technologies BV (submitted in a patch against 2.6.12.2 by Patrick Riphagen). o Add PID for Falcom Samba GPRS modem (submitted by Sebastian Schubert). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-02 14:01:27 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_ELV_UR100_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_ELV_ALC8500_PID) },
[PATCH] drivers/usb/serial/ftdi_sio: add PID/VID We would like to add a PID for the Pyramid Appliance Display, which works on USB via FTDI_SIO. Signed-off-by: Thomas Riewe <thomasr@pyramid.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio.h | 3 +++ 2 files changed, 4 insertions(+)
2005-09-29 14:57:29 +02:00
{ USB_DEVICE(FTDI_VID, FTDI_PYRAMID_PID) },
[PATCH] USB: add new device id to ftdi_sio module This is a patch to get the ELV FHZ1000 Home Automation control device to work with Linux. The patch adds a new device ID to the ftdi_sio driver. It is for kernel version 2.6.13.4. Signed-off-by: Martin Hagelin <martin.hagelin@home.se> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-26 21:10:41 +02:00
{ USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1000PC_PID) },
[PATCH] USB ftdi_sio: New IDs for ELV, Xsens and Falcom products This patch for the ftdi_sio driver adds a bunch of new devices and fixes an incorrect PID: o Fix PID for ELV UO100 (the PID was in fact for ELV UR100). o Add PID ELV UR100 (see above) and ELV ALC 8500 Expert. o Add a whole bunch of other PIDs for ELV USB devices, commented out for now as they may be used by other drivers eventually. (Christian Abt of ELV.de submitted a full list of devices including an indication of which set of drivers are used by default in the MS Windows world. We decided to comment out the devices that use FTDI's D2XX Windows drivers by default.) o Add PIDs for eight devices from Xsens Technologies BV (submitted in a patch against 2.6.12.2 by Patrick Riphagen). o Add PID for Falcom Samba GPRS modem (submitted by Sebastian Schubert). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-02 14:01:27 +01:00
/*
* These will probably use user-space drivers. Uncomment them if
* you need them or use the user-specified vendor/product module
* parameters (see ftdi_sio.h for the numbers). Make a fuss if
* you think the driver should recognize any of them by default.
*/
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_CLI7000_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_PPS7330_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_TFM100_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_UDF77_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_UIO88_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_UAD8_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_UDA7_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_USI2_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_T1100_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_PCD200_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_ULA200_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_CSI8_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1000DL_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_PCK100_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_RFP500_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) }, */
/* { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) }, */
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
{ USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
{ USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
{ USB_DEVICE(FTDI_VID, LINX_FUTURE_0_PID) },
{ USB_DEVICE(FTDI_VID, LINX_FUTURE_1_PID) },
{ USB_DEVICE(FTDI_VID, LINX_FUTURE_2_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
{ USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
{ USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
{ USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
{ USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
[PATCH] USB ftdi_sio: New IDs for ELV, Xsens and Falcom products This patch for the ftdi_sio driver adds a bunch of new devices and fixes an incorrect PID: o Fix PID for ELV UO100 (the PID was in fact for ELV UR100). o Add PID ELV UR100 (see above) and ELV ALC 8500 Expert. o Add a whole bunch of other PIDs for ELV USB devices, commented out for now as they may be used by other drivers eventually. (Christian Abt of ELV.de submitted a full list of devices including an indication of which set of drivers are used by default in the MS Windows world. We decided to comment out the devices that use FTDI's D2XX Windows drivers by default.) o Add PIDs for eight devices from Xsens Technologies BV (submitted in a patch against 2.6.12.2 by Patrick Riphagen). o Add PID for Falcom Samba GPRS modem (submitted by Sebastian Schubert). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-02 14:01:27 +01:00
{ USB_DEVICE(FALCOM_VID, FALCOM_SAMBA_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
[PATCH] USB: VID/PID updates for ftdi_sio driver Some VID/PID updates for the ftdi_sio driver: * The "Gude Analog- und Digitalsysteme GmbH" entries were missing from the "combined" table. * Replaced FTDI_8U232AM_ALT_ALT_PID with 3 PIDs for devices from 4n-galaxy.de. * Removed redundant FTDI_RM_VID and renamed FTDI_RMCANVIEW_PID to FTDI_RM_CANVIEW_PID. * Added VID/PID for serial converter in Mobility Electronics EasiDock USB 200 (mentioned by Gregory Schmitt). * Added PID for Active Robots USB comms board (mentioned by John Koch). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -ur a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
2005-04-29 16:06:14 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
{ USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
{ USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
{ USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
[PATCH] USB: VID/PID updates for ftdi_sio driver Some VID/PID updates for the ftdi_sio driver: * The "Gude Analog- und Digitalsysteme GmbH" entries were missing from the "combined" table. * Replaced FTDI_8U232AM_ALT_ALT_PID with 3 PIDs for devices from 4n-galaxy.de. * Removed redundant FTDI_RM_VID and renamed FTDI_RMCANVIEW_PID to FTDI_RM_CANVIEW_PID. * Added VID/PID for serial converter in Mobility Electronics EasiDock USB 200 (mentioned by Gregory Schmitt). * Added PID for Active Robots USB comms board (mentioned by John Koch). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -ur a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
2005-04-29 16:06:14 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_0_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
[PATCH] USB ftdi_sio: New IDs for ELV, Xsens and Falcom products This patch for the ftdi_sio driver adds a bunch of new devices and fixes an incorrect PID: o Fix PID for ELV UO100 (the PID was in fact for ELV UR100). o Add PID ELV UR100 (see above) and ELV ALC 8500 Expert. o Add a whole bunch of other PIDs for ELV USB devices, commented out for now as they may be used by other drivers eventually. (Christian Abt of ELV.de submitted a full list of devices including an indication of which set of drivers are used by default in the MS Windows world. We decided to comment out the devices that use FTDI's D2XX Windows drivers by default.) o Add PIDs for eight devices from Xsens Technologies BV (submitted in a patch against 2.6.12.2 by Patrick Riphagen). o Add PID for Falcom Samba GPRS modem (submitted by Sebastian Schubert). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-02 14:01:27 +01:00
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_0_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_1_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_2_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_3_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_4_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
[PATCH] USB: VID/PID updates for ftdi_sio driver Some VID/PID updates for the ftdi_sio driver: * The "Gude Analog- und Digitalsysteme GmbH" entries were missing from the "combined" table. * Replaced FTDI_8U232AM_ALT_ALT_PID with 3 PIDs for devices from 4n-galaxy.de. * Removed redundant FTDI_RM_VID and renamed FTDI_RMCANVIEW_PID to FTDI_RM_CANVIEW_PID. * Added VID/PID for serial converter in Mobility Electronics EasiDock USB 200 (mentioned by Gregory Schmitt). * Added PID for Active Robots USB comms board (mentioned by John Koch). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -ur a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
2005-04-29 16:06:14 +01:00
{ USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
[PATCH] USB: ftdi_sio: new microHAM device IDs This patch adds a bunch of new device IDs to the ftdi_sio driver for various devices from microHAM using FTDI chips. Micheal Studer supplied the PID for the USB-Y9 device. I examined the INF file in microHAM's Windows driver package for the USB-KW, USB-YS, USB-IC, USB-DB9 and USB-RS232 devices. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-27 14:05:32 +00:00
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_YS_PID) },
[PATCH] USB: ftdi_sio: new microHAM and Evolution Robotics devices The attached patch adds the following new devices to the ftdi_sio driver: * microHAM USB-Y6 and USB-Y8 devices submitted by Justin Burket (KL1RL). * Evolution Robotics ER1 Control Module submitted by Shawn M. Lavelle. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:31 -07:00
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_Y6_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_Y8_PID) },
[PATCH] USB: ftdi_sio: new microHAM device IDs This patch adds a bunch of new device IDs to the ftdi_sio driver for various devices from microHAM using FTDI chips. Micheal Studer supplied the PID for the USB-Y9 device. I examined the INF file in microHAM's Windows driver package for the USB-KW, USB-YS, USB-IC, USB-DB9 and USB-RS232 devices. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-27 14:05:32 +00:00
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_IC_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_DB9_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_RS232_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_MHAM_Y9_PID) },
[PATCH] USB: ftdi_sio: new IDs for Teratronik devices This patch adds vendor and product IDs to the ftdi_sio driver's device ID table for two devices from teratronik.de. The device IDs were submitted by O. Wlfelschneider of Teratronik Elektronische Systeme GmbH. The charset of the patch is latin-1, same as the original files. Please apply, thanks! (I've tried to avoid a clash with Andrew Morton's patch to add support for Posiflex PP-7700 printer to the same driver.) Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-12-13 16:18:47 +00:00
{ USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
[PATCH] USB: ftdi_sio: new microHAM and Evolution Robotics devices The attached patch adds the following new devices to the ftdi_sio driver: * microHAM USB-Y6 and USB-Y8 devices submitted by Justin Burket (KL1RL). * Evolution Robotics ER1 Control Module submitted by Shawn M. Lavelle. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:31 -07:00
{ USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
[PATCH] USB: ftdi: Artemis and ATIK based USB astronomical CCD cameras This patch enables direct kernel support for the Artemis and ATIK astronomical based USB CCD cameras. Since all communications with this camera are done via an FTDI 245BM chip, it was only needed to specify the ProductID and VendorID of all three devices. In what tests are concerned, data was transfered from and to the FTDI at the chips Top speed (360KB/s). Signed-off-by: Rui Santos <rsantos@grupopie.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/usb/serial/ftdi_sio.c | 3 +++ drivers/usb/serial/ftdi_sio.h | 13 +++++++++++++ 2 files changed, 16 insertions(+)
2005-09-23 20:06:50 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
[PATCH] USB: ftdi: Two new ATIK based USB astronomical CCD cameras Documentation: Specify grayscale specification on ATIK-ATK16 and ATIK-ATK16HR comments. New: Add ProductID and VendorID for devices ATIK-ATK16C and ATIK-ATK16HRC. These devices are also USB Astronomical CCD cameras that work through an FTDI 245BM chip, share the same base hardware but, it has a colour CCD chip instead of a grayscale one. Signed-off-by: Rui Santos <rsantos@grupopie.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-09 13:12:40 +00:00
{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
[PATCH] USB: ftdi: Artemis and ATIK based USB astronomical CCD cameras This patch enables direct kernel support for the Artemis and ATIK astronomical based USB CCD cameras. Since all communications with this camera are done via an FTDI 245BM chip, it was only needed to specify the ProductID and VendorID of all three devices. In what tests are concerned, data was transfered from and to the FTDI at the chips Top speed (360KB/s). Signed-off-by: Rui Santos <rsantos@grupopie.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/usb/serial/ftdi_sio.c | 3 +++ drivers/usb/serial/ftdi_sio.h | 13 +++++++++++++ 2 files changed, 16 insertions(+)
2005-09-23 20:06:50 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HR_PID) },
[PATCH] USB: ftdi: Two new ATIK based USB astronomical CCD cameras Documentation: Specify grayscale specification on ATIK-ATK16 and ATIK-ATK16HR comments. New: Add ProductID and VendorID for devices ATIK-ATK16C and ATIK-ATK16HRC. These devices are also USB Astronomical CCD cameras that work through an FTDI 245BM chip, share the same base hardware but, it has a colour CCD chip instead of a grayscale one. Signed-off-by: Rui Santos <rsantos@grupopie.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-09 13:12:40 +00:00
{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16HRC_PID) },
[PATCH] USB: ftdi_sio: new IDs for KOBIL devices This patch adds two new devices to the ftdi_sio driver's device ID table. The device IDs were supplied by Stefan Nies of KOBIL Systems for two of their devices using the FTDI chip. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-23 15:45:23 -08:00
{ USB_DEVICE(KOBIL_VID, KOBIL_CONV_B1_PID) },
{ USB_DEVICE(KOBIL_VID, KOBIL_CONV_KAAN_PID) },
[PATCH] USB: Support for Posiflex PP-7000 retail printer in Linux This little patch adds recognition of Posiflex PP-7000 retail printer to ftdo_sio module. The printer uses FT232BM bridge programmed with custom VID/PID. The patch posted to lkml and sf.net was for 2.6.11.1 kernel, here is one reworked for 2.6.12. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-12-09 09:30:59 +03:00
{ USB_DEVICE(POSIFLEX_VID, POSIFLEX_PP7000_PID) },
[PATCH] USB: new id for ftdi_sio.c and ftdi_sio.h this patch includes the Vendor Id for a optic fiber to USB device named TTUSB from thought Technology. It's just add the vendor Id to ftdi_sio.h and add the Vendor ID and model Id to table_combined. Signed-off-by: Louis Nyffenegger <louis.nyffenegger@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05 17:20:37 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_TTUSB_PID) },
[PATCH] USB: ftdi_sio: add support for Eclo COM to 1-Wire USB adapter This patch adds support for the Eclo COM to 1-Wire USB adapter <http://www.eclo.pt/products_ibutton_adapters_usb01_en.asp> to the ftdi_sio driver's device ID table. Details were provided by Martin Grill on the ftdi-sio-usb-devel mailing list and I (Ian Abbott) confirmed it matched the INF file in the Eclo's Windows driver package. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-21 14:55:20 +00:00
{ USB_DEVICE(FTDI_VID, FTDI_ECLO_COM_1WIRE_PID) },
[PATCH] USB: ftdi_sio: new IDs for Westrex devices This patch adds two new devices to the ftdi_sio driver's device ID table. The device IDs were supplied by Cory Lee to support two POS printers made by Westrex International (Model 777 and Model 8900F). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-09 17:11:40 +00:00
{ USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
[PATCH] USB: ftdi_sio: new PID for PCDJ DAC2 The attached patch adds a new PID for the ftdi_sio driver. It will enable support for PC-DJ's DAC-2 controller module (more information on http://www.pcdjhardware.com/DAC2.asp) Signed-off-by: Wouter Paesen <wouter@kangaroot.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-03 14:30:31 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
[PATCH] USB: ftdi_sio vendor code for RR-CirKits LocoBuffer USB This patch adds recognition of the RR-CirKits LocoBuffer USB to the existing FTDI driver. http://www.rr-cirkits.com Signed-off-by: Nathan Bronson <ngb@sns-usa.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-10 00:05:09 -04:00
{ USB_DEVICE(FTDI_VID, FTDI_RRCIRKITS_LOCOBUFFER_PID) },
[PATCH] USB: ftdi_sio: add support for ASK RDR 400 series card reader This patch adds support for an ASK RDR 400 series contactless card reader <http://www.ask.fr/uk/products_and_services/terminals.html> to the ftdi_sio driver's device ID table. The product ID was supplied by Adriano Couto on the ftdi-usb-sio-devel list. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-12 15:20:35 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_ASK_RDR400_PID) },
[PATCH] USB: ftdi_sio: add Icom ID1 USB product and vendor ids The Icom ID-1 1.2 GHz band digital transceiver is a new radio that has a USB interface. With this patch, the ftdi_sio driver will report "Detected FT8U232AM" and provide a serial device interface. Signed-off-by: "A. Maitland Bottoms" <bottoms@debian.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-14 18:44:23 -05:00
{ USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
[PATCH] USB: add support for Papouch TMU (USB thermometer) This patch adds support for new vendor (papouch) and one of their devices - TMU (a USB thermometer). More information: vendor homepage: http://www.papouch.com/en/ product homepage (Polish): http://www.papouch.com/shop/scripts/_detail.asp?katcislo=0188 This patch is based on the submission from Folkert van Heusden [1]. Then reviseted by Kalin KOZHUHAROV [2] and retested by Folkert. [1] http://article.gmane.org/gmane.linux.kernel/392970 [2] http://article.gmane.org/gmane.linux.kernel/393386 Signed-off-by: Folkert van Heusden <folkert@vanheusden.com> Signed-off-by: Kalin KOZHUHAROV <kalin@thinrope.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-28 20:41:26 +09:00
{ USB_DEVICE(PAPOUCH_VID, PAPOUCH_TMU_PID) },
[PATCH] USB: ftdi_sio: Add support for HCG HF Dual ISO RFID Reader This patch adds support for ACG Identification Technologies GmbH's HF Dual ISO Reader (an RFID tag reader) to the ftdi_sio driver's device ID table. The product ID was supplied by anotonios (anton at goto10 dot org) on the ftdi-usb-sio-devel list and subsequently verified by myself (Ian Abbott). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-05-04 11:34:25 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) },
[PATCH] USB: ftdi_sio: add support for Yost Engineering ServoCenter3.1 This patch adds support for Yost Engineering Inc's ServoCenter 3.1 USB product to the ftdi_sio driver's device ID table. The PID was supplied by Aaron Prose of Yost Engineering on the ftdi-usb-sio-devel list. The PID 0xE050 matches the Windows INF files for this device. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-05-30 12:36:30 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) },
[PATCH] USB: new device id for Thorlabs motor driver Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-17 18:09:15 -04:00
{ USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) },
[PATCH] USB: Add one VID/PID to ftdi_sio This patch adds the Testo USB interface to the list of devices recognized by the ftdi_sio module. This device is based on a FT232BL chip, and is used as an interface to get data from digital sensors (thermometer, etc). See http://www.testo.com/ Signed-off-by: Colin Leroy <colin@colino.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-11 11:36:43 +02:00
{ USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) },
USB: New device ID for ftdi_sio usb serial driver The patch adds a new device ID for the Gamma Scout Geiger counter device. Signed-off-by: Ralf Schlatterbeck <rsc@runtux.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-06 12:15:02 +02:00
{ USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) },
USB serial ftdi_sio: Add support for Tactrix OpenPort devices This patch adds support for three OpenPort ECU data cables from Tactrix Inc. to the ftdi_sio driver's device ID table. One of the PIDs was supplied by Donour Sizemore on the ftdi-usb-sio-devel mailing list. The other two were added by myself after examining the Windows driver software. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-25 14:19:19 +01:00
{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
[PATCH] USB ftdi_sio: user specified VID/PID ftdi_sio: Support one user specified vendor and product ID via a couple of new module parameters. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-28 18:40:32 +01:00
{ }, /* Optional parameter entry */
{ } /* Terminating entry */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
};
MODULE_DEVICE_TABLE (usb, id_table_combined);
static struct usb_driver ftdi_driver = {
.name = "ftdi_sio",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table_combined,
[PATCH] USB: allow usb drivers to disable dynamic ids This lets drivers, like the usb-serial ones, disable the ability to add ids from sysfs. The usb-serial drivers are "odd" in that they are really usb-serial bus drivers, not usb bus drivers, so the dynamic id logic will have to go into the usb-serial bus core for those drivers to get that ability. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-16 13:41:28 -08:00
.no_dynamic_id = 1,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
};
[PATCH] USB: mark various usb tables const patch below marks various USB tables and variables as const so that they end up in .rodata section and don't cacheline share with things that get written to. For the non-array variables it also allows gcc to optimize more. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-29 09:43:42 +01:00
static const char *ftdi_chip_name[] = {
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[SIO] = "SIO", /* the serial part of FT8U100AX */
[FT8U232AM] = "FT8U232AM",
[FT232BM] = "FT232BM",
[FT2232C] = "FT2232C",
};
/* Constants for read urb and write urb */
#define BUFSZ 512
#define PKTSZ 64
/* rx_flags */
#define THROTTLED 0x01
#define ACTUALLY_THROTTLED 0x02
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 */
__u8 rx_flags; /* receive state flags (throttling) */
spinlock_t rx_lock; /* spinlock for receive state */
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
struct work_struct rx_work;
int rx_processed;
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
unsigned long rx_bytes;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
__u16 interface; /* FT2232C port interface (0 for FT232/245) */
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 */
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
spinlock_t tx_lock; /* spinlock for transmit state */
unsigned long tx_bytes;
unsigned long tx_outstanding_bytes;
unsigned long tx_outstanding_urbs;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
};
/* 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 */
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id);
static int ftdi_sio_attach (struct usb_serial *serial);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
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, 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);
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 14:55:46 +01:00
static void ftdi_write_bulk_callback (struct urb *urb);
static void ftdi_read_bulk_callback (struct urb *urb);
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
static void ftdi_process_read (void *param);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
static void ftdi_set_termios (struct usb_serial_port *port, struct termios * old);
static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file);
static int ftdi_tiocmset (struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear);
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);
[PATCH] USB Serial: rename usb_serial_device_type to usb_serial_driver I'm tired of trying to explain why a "device_type" is really a driver. This better describes exactly what this structure is. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 21:15:16 -07:00
static struct usb_serial_driver ftdi_sio_device = {
[PATCH] USB Serial: get rid of the .owner field in usb_serial_driver Don't duplicate something that's already in struct driver. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 21:15:16 -07:00
.driver = {
.owner = THIS_MODULE,
[PATCH] USB Serial: move name to driver structure This fixes up a lot of problems in sysfs with some of the usb serial drivers, they had incorrect driver names. Also saves a tiny ammount of memory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 21:15:16 -07:00
.name = "ftdi_sio",
[PATCH] USB Serial: get rid of the .owner field in usb_serial_driver Don't duplicate something that's already in struct driver. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 21:15:16 -07:00
},
[PATCH] USB Serial: move name to driver structure This fixes up a lot of problems in sysfs with some of the usb serial drivers, they had incorrect driver names. Also saves a tiny ammount of memory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 21:15:16 -07:00
.description = "FTDI USB Serial Device",
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
.id_table = id_table_combined,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
.num_interrupt_in = 0,
.num_bulk_in = 1,
.num_bulk_out = 1,
.num_ports = 1,
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
.probe = ftdi_sio_probe,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
.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,
.tiocmget = ftdi_tiocmget,
.tiocmset = ftdi_tiocmset,
.ioctl = ftdi_ioctl,
.set_termios = ftdi_set_termios,
.break_ctl = ftdi_break_ctl,
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
.attach = ftdi_sio_attach,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
.shutdown = ftdi_shutdown,
};
#define WDR_TIMEOUT 5000 /* default urb timeout */
[PATCH] USB: ftdi_sio: fix a couple of timeouts ftdi_sio: Fix timeouts in a couple of usb_control_msg() calls due to change of units from jiffies to milliseconds in 2.6.12. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:52 -07:00
#define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* High and low are for DTR, RTS etc etc */
#define HIGH 1
#define LOW 0
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
/* number of outstanding urbs to prevent userspace DoS from happening */
#define URB_UPPER_LIMIT 42
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/*
* ***************************************************************************
* 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));
}
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
#define set_mctrl(port, set) update_mctrl((port), (set), 0)
#define clear_mctrl(port, clear) update_mctrl((port), 0, (clear))
static int update_mctrl(struct usb_serial_port *port, unsigned int set, unsigned int clear)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
char *buf;
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
unsigned urb_value;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
int rv;
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
dbg("%s - DTR|RTS not being set|cleared", __FUNCTION__);
return 0; /* no change */
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
buf = kmalloc(1, GFP_NOIO);
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
if (!buf) {
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
return -ENOMEM;
}
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
clear &= ~set; /* 'set' takes precedence over 'clear' */
urb_value = 0;
if (clear & TIOCM_DTR)
urb_value |= FTDI_SIO_SET_DTR_LOW;
if (clear & TIOCM_RTS)
urb_value |= FTDI_SIO_SET_RTS_LOW;
if (set & TIOCM_DTR)
urb_value |= FTDI_SIO_SET_DTR_HIGH;
if (set & TIOCM_RTS)
urb_value |= FTDI_SIO_SET_RTS_HIGH;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
rv = 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,
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
urb_value, priv->interface,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
buf, 0, WDR_TIMEOUT);
kfree(buf);
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
if (rv < 0) {
err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
__FUNCTION__,
(set & TIOCM_DTR) ? "HIGH" :
(clear & TIOCM_DTR) ? "LOW" : "unchanged",
(set & TIOCM_RTS) ? "HIGH" :
(clear & TIOCM_RTS) ? "LOW" : "unchanged");
} else {
dbg("%s - DTR %s, RTS %s", __FUNCTION__,
(set & TIOCM_DTR) ? "HIGH" :
(clear & TIOCM_DTR) ? "LOW" : "unchanged",
(set & TIOCM_RTS) ? "HIGH" :
(clear & TIOCM_RTS) ? "LOW" : "unchanged");
priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set;
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
return rv;
}
static __u32 get_ftdi_divisor(struct usb_serial_port * port);
static int change_speed(struct usb_serial_port *port)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
char *buf;
__u16 urb_value;
__u16 urb_index;
__u32 urb_index_value;
int rv;
buf = kmalloc(1, GFP_NOIO);
if (!buf)
return -ENOMEM;
urb_index_value = get_ftdi_divisor(port);
urb_value = (__u16)urb_index_value;
urb_index = (__u16)(urb_index_value >> 16);
if (priv->interface) { /* FT2232C */
urb_index = (__u16)((urb_index << 8) | priv->interface);
}
rv = 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,
[PATCH] USB: ftdi_sio: fix a couple of timeouts ftdi_sio: Fix timeouts in a couple of usb_control_msg() calls due to change of units from jiffies to milliseconds in 2.6.12. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:52 -07:00
buf, 0, WDR_SHORT_TIMEOUT);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
kfree(buf);
return rv;
}
static __u32 get_ftdi_divisor(struct usb_serial_port * port)
{ /* get_ftdi_divisor */
struct ftdi_private *priv = usb_get_serial_port_data(port);
__u32 div_value = 0;
int div_okay = 1;
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 */
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 */
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 */
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,
ftdi_chip_name[priv->chip_type]);
}
return(div_value);
}
static int get_serial_info(struct usb_serial_port * port, struct serial_struct __user * retinfo)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
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 __user * newinfo)
{ /* set_serial_info */
struct ftdi_private *priv = usb_get_serial_port_data(port);
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 */
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
/* Determine type of FTDI chip based on USB config and descriptor. */
static void ftdi_determine_type(struct usb_serial_port *port)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
struct usb_serial *serial = port->serial;
struct usb_device *udev = serial->dev;
unsigned version;
unsigned interfaces;
/* Assume it is not the original SIO device for now. */
[PATCH] USB: ftdi_sio: custom baud rate fix ftdi_sio: I messed up the baud_base for custom baud rate support in 2.6.13. The attached one-liner patch fixes it. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-12 12:23:25 +01:00
priv->baud_base = 48000000 / 2;
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
priv->write_offset = 0;
version = le16_to_cpu(udev->descriptor.bcdDevice);
interfaces = udev->actconfig->desc.bNumInterfaces;
dbg("%s: bcdDevice = 0x%x, bNumInterfaces = %u", __FUNCTION__,
version, interfaces);
if (interfaces > 1) {
int inter;
/* Multiple interfaces. Assume FT2232C. */
priv->chip_type = FT2232C;
/* Determine interface code. */
inter = serial->interface->altsetting->desc.bInterfaceNumber;
if (inter == 0) {
priv->interface = PIT_SIOA;
} else {
priv->interface = PIT_SIOB;
}
/* BM-type devices have a bug where bcdDevice gets set
* to 0x200 when iSerialNumber is 0. */
if (version < 0x500) {
dbg("%s: something fishy - bcdDevice too low for multi-interface device",
__FUNCTION__);
}
} else if (version < 0x200) {
/* Old device. Assume its the original SIO. */
priv->chip_type = SIO;
priv->baud_base = 12000000 / 16;
priv->write_offset = 1;
} else if (version < 0x400) {
/* Assume its an FT8U232AM (or FT8U245AM) */
/* (It might be a BM because of the iSerialNumber bug,
* but it will still work as an AM device.) */
priv->chip_type = FT8U232AM;
} else {
/* Assume its an FT232BM (or FT245BM) */
priv->chip_type = FT232BM;
}
info("Detected %s", ftdi_chip_name[priv->chip_type]);
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/*
* ***************************************************************************
* Sysfs Attribute
* ***************************************************************************
*/
[PATCH] Driver Core: drivers/usb/input/aiptek.c - drivers/zorro/zorro-sysfs.c: update device attribute callbacks Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-17 06:44:04 -04:00
static ssize_t show_latency_timer(struct device *dev, struct device_attribute *attr, char *buf)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{
struct usb_serial_port *port = to_usb_serial_port(dev);
struct ftdi_private *priv = usb_get_serial_port_data(port);
struct usb_device *udev;
unsigned short latency = 0;
int rv = 0;
udev = to_usb_device(dev);
dbg("%s",__FUNCTION__);
rv = usb_control_msg(udev,
usb_rcvctrlpipe(udev, 0),
FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
0, priv->interface,
(char*) &latency, 1, WDR_TIMEOUT);
if (rv < 0) {
dev_err(dev, "Unable to read latency timer: %i", rv);
return -EIO;
}
return sprintf(buf, "%i\n", latency);
}
/* Write a new value of the latency timer, in units of milliseconds. */
[PATCH] Driver Core: drivers/usb/input/aiptek.c - drivers/zorro/zorro-sysfs.c: update device attribute callbacks Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-17 06:44:04 -04:00
static ssize_t store_latency_timer(struct device *dev, struct device_attribute *attr, const char *valbuf,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
size_t count)
{
struct usb_serial_port *port = to_usb_serial_port(dev);
struct ftdi_private *priv = usb_get_serial_port_data(port);
struct usb_device *udev;
char buf[1];
int v = simple_strtoul(valbuf, NULL, 10);
int rv = 0;
udev = to_usb_device(dev);
dbg("%s: setting latency timer = %i", __FUNCTION__, v);
rv = usb_control_msg(udev,
usb_sndctrlpipe(udev, 0),
FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
v, priv->interface,
buf, 0, WDR_TIMEOUT);
if (rv < 0) {
dev_err(dev, "Unable to write latency timer: %i", rv);
return -EIO;
}
return count;
}
/* Write an event character directly to the FTDI register. The ASCII
value is in the low 8 bits, with the enable bit in the 9th bit. */
[PATCH] Driver Core: drivers/usb/input/aiptek.c - drivers/zorro/zorro-sysfs.c: update device attribute callbacks Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-17 06:44:04 -04:00
static ssize_t store_event_char(struct device *dev, struct device_attribute *attr, const char *valbuf,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
size_t count)
{
struct usb_serial_port *port = to_usb_serial_port(dev);
struct ftdi_private *priv = usb_get_serial_port_data(port);
struct usb_device *udev;
char buf[1];
int v = simple_strtoul(valbuf, NULL, 10);
int rv = 0;
udev = to_usb_device(dev);
dbg("%s: setting event char = %i", __FUNCTION__, v);
rv = usb_control_msg(udev,
usb_sndctrlpipe(udev, 0),
FTDI_SIO_SET_EVENT_CHAR_REQUEST,
FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
v, priv->interface,
buf, 0, WDR_TIMEOUT);
if (rv < 0) {
dbg("Unable to write event character: %i", rv);
return -EIO;
}
return count;
}
static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer);
static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
static int create_sysfs_attrs(struct usb_serial *serial)
{
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
struct ftdi_private *priv;
struct usb_device *udev;
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
int retval = 0;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
dbg("%s",__FUNCTION__);
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
priv = usb_get_serial_port_data(serial->port[0]);
udev = serial->dev;
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* XXX I've no idea if the original SIO supports the event_char
* sysfs parameter, so I'm playing it safe. */
if (priv->chip_type != SIO) {
dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
retval = device_create_file(&udev->dev, &dev_attr_event_char);
if ((!retval) &&
(priv->chip_type == FT232BM || priv->chip_type == FT2232C)) {
retval = device_create_file(&udev->dev,
&dev_attr_latency_timer);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
}
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
return retval;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
static void remove_sysfs_attrs(struct usb_serial *serial)
{
struct ftdi_private *priv;
struct usb_device *udev;
dbg("%s",__FUNCTION__);
priv = usb_get_serial_port_data(serial->port[0]);
udev = serial->dev;
/* XXX see create_sysfs_attrs */
if (priv->chip_type != SIO) {
device_remove_file(&udev->dev, &dev_attr_event_char);
if (priv->chip_type == FT232BM || priv->chip_type == FT2232C) {
device_remove_file(&udev->dev, &dev_attr_latency_timer);
}
}
}
/*
* ***************************************************************************
* FTDI driver specific functions
* ***************************************************************************
*/
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
/* Probe function to check for special devices */
static int ftdi_sio_probe (struct usb_serial *serial, const struct usb_device_id *id)
{
usb_set_serial_data(serial, (void *)id->driver_info);
return (0);
}
/* attach subroutine */
static int ftdi_sio_attach (struct usb_serial *serial)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{
struct usb_serial_port *port = serial->port[0];
struct ftdi_private *priv;
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
struct ftdi_sio_quirk *quirk;
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
int retval;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
dbg("%s",__FUNCTION__);
[PATCH] USB: kzalloc() conversion for rest of drivers/usb Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-27 21:29:43 +01:00
priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
if (!priv){
err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct ftdi_private));
return -ENOMEM;
}
spin_lock_init(&priv->rx_lock);
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
spin_lock_init(&priv->tx_lock);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
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 */
[PATCH] USB: kfree cleanup for drivers/usb/* - no need to check for NULL Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*, there's no need to check a pointer for NULL before calling kfree() on it. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Index: gregkh-2.6/drivers/usb/class/audio.c ===================================================================
2005-04-18 17:39:34 -07:00
kfree(port->bulk_in_buffer);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
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;
}
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
INIT_WORK(&priv->rx_work, ftdi_process_read, port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* Free port's existing write urb and transfer buffer. */
if (port->write_urb) {
usb_free_urb (port->write_urb);
port->write_urb = NULL;
}
[PATCH] USB: kfree cleanup for drivers/usb/* - no need to check for NULL Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*, there's no need to check a pointer for NULL before calling kfree() on it. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Index: gregkh-2.6/drivers/usb/class/audio.c ===================================================================
2005-04-18 17:39:34 -07:00
kfree(port->bulk_out_buffer);
port->bulk_out_buffer = NULL;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
usb_set_serial_port_data(serial->port[0], priv);
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
ftdi_determine_type (serial->port[0]);
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
retval = create_sysfs_attrs(serial);
if (retval)
dev_err(&serial->dev->dev, "Error creating sysfs files, "
"continuing\n");
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
/* Check for device requiring special set up. */
quirk = (struct ftdi_sio_quirk *)usb_get_serial_data(serial);
if (quirk && quirk->setup) {
quirk->setup(serial);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
USB: fix __must_check warnings in drivers/usb/serial/ Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-28 11:43:25 -07:00
return 0;
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
} /* ftdi_sio_attach */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
/* Setup for the USB-UIRT device, which requires hardwired
* baudrate (38400 gets mapped to 312500) */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* Called from usbserial:serial_probe */
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
static void ftdi_USB_UIRT_setup (struct usb_serial *serial)
{
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
struct ftdi_private *priv;
dbg("%s",__FUNCTION__);
priv = usb_get_serial_port_data(serial->port[0]);
priv->flags |= ASYNC_SPD_CUST;
priv->custom_divisor = 77;
priv->force_baud = B38400;
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
} /* ftdi_USB_UIRT_setup */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
/* Setup for the HE-TIRA1 device, which requires hardwired
* baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
static void ftdi_HE_TIRA1_setup (struct usb_serial *serial)
{
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
struct ftdi_private *priv;
dbg("%s",__FUNCTION__);
priv = usb_get_serial_port_data(serial->port[0]);
priv->flags |= ASYNC_SPD_CUST;
priv->custom_divisor = 240;
priv->force_baud = B38400;
priv->force_rtscts = 1;
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
} /* ftdi_HE_TIRA1_setup */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* 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 = usb_get_serial_port_data(port);
dbg("%s", __FUNCTION__);
remove_sysfs_attrs(serial);
/* all open ports are closed at this point
* (by usbserial.c:__serial_close, which calls ftdi_close)
*/
if (priv) {
usb_set_serial_port_data(port, NULL);
kfree(priv);
}
} /* ftdi_shutdown */
static int ftdi_open (struct usb_serial_port *port, struct file *filp)
{ /* ftdi_open */
struct usb_device *dev = port->serial->dev;
struct ftdi_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
int result = 0;
char buf[1]; /* Needed for the usb_control_msg I think */
dbg("%s", __FUNCTION__);
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
spin_lock_irqsave(&priv->tx_lock, flags);
priv->tx_bytes = 0;
spin_unlock_irqrestore(&priv->tx_lock, flags);
spin_lock_irqsave(&priv->rx_lock, flags);
priv->rx_bytes = 0;
spin_unlock_irqrestore(&priv->rx_lock, flags);
[PATCH] USB: console: fix oops Prevent NULL dereference when used as a USB-serial console. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-13 22:27:12 +02:00
if (port->tty)
port->tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* No error checking for this (will get errors later anyway) */
/* See ftdi_sio.h for description of what is reset */
usb_control_msg(dev, usb_sndctrlpipe(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 */
[PATCH] USB: console: fix oops Prevent NULL dereference when used as a USB-serial console. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-13 22:27:12 +02:00
if (port->tty)
ftdi_set_termios(port, NULL);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* 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 */
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* Not throttled */
spin_lock_irqsave(&priv->rx_lock, flags);
priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
spin_unlock_irqrestore(&priv->rx_lock, flags);
/* Start reading from the device */
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
priv->rx_processed = 0;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
usb_fill_bulk_urb(port->read_urb, dev,
usb_rcvbulkpipe(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, GFP_KERNEL);
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 */
unsigned int c_cflag = port->tty->termios->c_cflag;
struct ftdi_private *priv = usb_get_serial_port_data(port);
char buf[1];
dbg("%s", __FUNCTION__);
if (c_cflag & HUPCL){
/* Disable flow control */
if (usb_control_msg(port->serial->dev,
usb_sndctrlpipe(port->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");
}
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
/* drop RTS and DTR */
clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
} /* Note change no line if hupcl is off */
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
/* cancel any scheduled reading */
cancel_delayed_work(&priv->rx_work);
flush_scheduled_work();
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* shutdown our bulk read */
if (port->read_urb)
usb_kill_urb(port->read_urb);
} /* 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,
const unsigned char *buf, int count)
{ /* ftdi_write */
struct ftdi_private *priv = usb_get_serial_port_data(port);
struct urb *urb;
unsigned char *buffer;
int data_offset ; /* will be 1 for the SIO and 0 otherwise */
int status;
int transfer_size;
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
unsigned long flags;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
dbg("%s port %d, %d bytes", __FUNCTION__, port->number, count);
if (count == 0) {
dbg("write request of 0 bytes");
return 0;
}
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
spin_lock_irqsave(&priv->tx_lock, flags);
if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
spin_unlock_irqrestore(&priv->tx_lock, flags);
dbg("%s - write limit hit\n", __FUNCTION__);
return 0;
}
spin_unlock_irqrestore(&priv->tx_lock, flags);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
data_offset = priv->write_offset;
dbg("data_offset set to %d",data_offset);
/* Determine total transfer size */
transfer_size = count;
if (data_offset > 0) {
/* Original sio needs control bytes too... */
transfer_size += (data_offset *
((count + (PKTSZ - 1 - data_offset)) /
(PKTSZ - data_offset)));
}
buffer = kmalloc (transfer_size, GFP_ATOMIC);
if (!buffer) {
err("%s ran out of kernel memory for urb ...", __FUNCTION__);
return -ENOMEM;
}
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
err("%s - no more free urbs", __FUNCTION__);
kfree (buffer);
return -ENOMEM;
}
/* Copy data */
if (data_offset > 0) {
/* Original sio requires control byte at start of each packet. */
int user_pktsz = PKTSZ - data_offset;
int todo = count;
unsigned char *first_byte = buffer;
const unsigned char *current_position = buf;
while (todo > 0) {
if (user_pktsz > todo) {
user_pktsz = todo;
}
/* Write the control byte at the front of the packet*/
*first_byte = 1 | ((user_pktsz) << 2);
/* Copy data for packet */
memcpy (first_byte + data_offset,
current_position, user_pktsz);
first_byte += user_pktsz + data_offset;
current_position += user_pktsz;
todo -= user_pktsz;
}
} else {
/* No control byte required. */
/* Copy in the data to send */
memcpy (buffer, buf, count);
}
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, transfer_size, buffer);
/* fill the buffer and send it */
usb_fill_bulk_urb(urb, port->serial->dev,
usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress),
buffer, transfer_size,
ftdi_write_bulk_callback, port);
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status) {
err("%s - failed submitting write urb, error %d", __FUNCTION__, status);
count = status;
kfree (buffer);
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
} else {
spin_lock_irqsave(&priv->tx_lock, flags);
++priv->tx_outstanding_urbs;
priv->tx_outstanding_bytes += count;
priv->tx_bytes += count;
spin_unlock_irqrestore(&priv->tx_lock, flags);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
/* we are done with this urb, so let the host driver
* really free it when it is finished with it */
usb_free_urb (urb);
dbg("%s write returning: %d", __FUNCTION__, count);
return count;
} /* ftdi_write */
/* This function may get called when the device is closed */
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 14:55:46 +01:00
static void ftdi_write_bulk_callback (struct urb *urb)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
unsigned long flags;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
struct ftdi_private *priv;
int data_offset; /* will be 1 for the SIO and 0 otherwise */
unsigned long countback;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* free up the transfer buffer, as usb_free_urb() does not do this */
kfree (urb->transfer_buffer);
dbg("%s - port %d", __FUNCTION__, port->number);
if (urb->status) {
dbg("nonzero write bulk status received: %d", urb->status);
return;
}
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
priv = usb_get_serial_port_data(port);
if (!priv) {
dbg("%s - bad port private data pointer - exiting", __FUNCTION__);
return;
}
/* account for transferred data */
countback = urb->actual_length;
data_offset = priv->write_offset;
if (data_offset > 0) {
/* Subtract the control bytes */
countback -= (data_offset * ((countback + (PKTSZ - 1)) / PKTSZ));
}
spin_lock_irqsave(&priv->tx_lock, flags);
--priv->tx_outstanding_urbs;
priv->tx_outstanding_bytes -= countback;
spin_unlock_irqrestore(&priv->tx_lock, flags);
[PATCH] USB serial: encapsulate schedule_work, remove double-calling I'm going to throw schedule_work away, it's retarded. But for starters, let's have it encapsulated. Also, generic and whiteheat were both calling usb_serial_port_softint and scheduled work. Only one was necessary. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-05-22 21:58:49 -07:00
usb_serial_port_softint(port);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
} /* ftdi_write_bulk_callback */
static int ftdi_write_room( struct usb_serial_port *port )
{
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
struct ftdi_private *priv = usb_get_serial_port_data(port);
int room;
unsigned long flags;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
dbg("%s - port %d", __FUNCTION__, port->number);
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
spin_lock_irqsave(&priv->tx_lock, flags);
if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) {
/*
* We really can take anything the user throws at us
* but let's pick a nice big number to tell the tty
* layer that we have lots of free space
*/
room = 2048;
} else {
room = 0;
}
spin_unlock_irqrestore(&priv->tx_lock, flags);
return room;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
} /* ftdi_write_room */
static int ftdi_chars_in_buffer (struct usb_serial_port *port)
{ /* ftdi_chars_in_buffer */
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
struct ftdi_private *priv = usb_get_serial_port_data(port);
int buffered;
unsigned long flags;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
dbg("%s - port %d", __FUNCTION__, port->number);
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
spin_lock_irqsave(&priv->tx_lock, flags);
buffered = (int)priv->tx_outstanding_bytes;
spin_unlock_irqrestore(&priv->tx_lock, flags);
if (buffered < 0) {
err("%s outstanding tx bytes is negative!", __FUNCTION__);
buffered = 0;
}
return buffered;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
} /* ftdi_chars_in_buffer */
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 14:55:46 +01:00
static void ftdi_read_bulk_callback (struct urb *urb)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ /* ftdi_read_bulk_callback */
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
struct tty_struct *tty;
struct ftdi_private *priv;
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
unsigned long countread;
unsigned long flags;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
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 ", __FUNCTION__,urb->transfer_flags );
}
dbg("%s - port %d", __FUNCTION__, port->number);
if (port->open_count <= 0)
return;
tty = port->tty;
if (!tty) {
dbg("%s - bad tty pointer - exiting",__FUNCTION__);
return;
}
priv = usb_get_serial_port_data(port);
if (!priv) {
dbg("%s - bad port private data pointer - exiting", __FUNCTION__);
return;
}
if (urb != port->read_urb) {
err("%s - Not my urb!", __FUNCTION__);
}
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;
}
[PATCH] USB serial ftdi_sio: Prevent userspace DoS This patch limits the amount of outstanding 'write' data that can be queued up for the ftdi_sio driver, to prevent userspace DoS attacks (or simple accidents) that use up all the system memory by writing lots of data to the serial port. The original patch was by Guillaume Autran, who in turn based it on the same mechanism implemented in the 'visor' driver. I (Ian Abbott) re-targeted the patch to the latest sources, fixed a couple of errors, renamed his new structure members, and updated the implementations of the 'write_room' and 'chars_in_buffer' methods to take account of the number of outstanding 'write' bytes. It seems to work fine, though at low baud rates it is still possible to queue up an amount of data that takes an age to shift (a job for another day!). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:59:17 +01:00
/* count data bytes, but not status bytes */
countread = urb->actual_length;
countread -= 2 * ((countread + (PKTSZ - 1)) / PKTSZ);
spin_lock_irqsave(&priv->rx_lock, flags);
priv->rx_bytes += countread;
spin_unlock_irqrestore(&priv->rx_lock, flags);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
ftdi_process_read(port);
} /* ftdi_read_bulk_callback */
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
static void ftdi_process_read (void *param)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
{ /* ftdi_process_read */
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
struct usb_serial_port *port = (struct usb_serial_port*)param;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
struct urb *urb;
struct tty_struct *tty;
struct ftdi_private *priv;
char error_flag;
unsigned char *data;
int i;
int result;
int need_flip;
int packet_offset;
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
unsigned long flags;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
dbg("%s - port %d", __FUNCTION__, port->number);
if (port->open_count <= 0)
return;
tty = port->tty;
if (!tty) {
dbg("%s - bad tty pointer - exiting",__FUNCTION__);
return;
}
priv = usb_get_serial_port_data(port);
if (!priv) {
dbg("%s - bad port private data pointer - exiting", __FUNCTION__);
return;
}
urb = port->read_urb;
if (!urb) {
dbg("%s - bad read_urb pointer - exiting", __FUNCTION__);
return;
}
data = urb->transfer_buffer;
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
if (priv->rx_processed) {
dbg("%s - already processed: %d bytes, %d remain", __FUNCTION__,
priv->rx_processed,
urb->actual_length - priv->rx_processed);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
} else {
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
/* The first two bytes of every read packet are status */
if (urb->actual_length > 2) {
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
} else {
dbg("Status only: %03oo %03oo",data[0],data[1]);
}
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* 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;
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
for (packet_offset = priv->rx_processed; packet_offset < urb->actual_length; packet_offset += PKTSZ) {
int length;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* Compare new line status to the old one, signal if different */
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
/* N.B. packet may be processed more than once, but differences
* are only processed once. */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
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;
}
}
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
length = min(PKTSZ, urb->actual_length-packet_offset)-2;
if (length < 0) {
err("%s - bad packet length: %d", __FUNCTION__, length+2);
length = 0;
}
if (priv->rx_flags & THROTTLED) {
dbg("%s - throttled", __FUNCTION__);
break;
}
[PATCH] TTY layer buffering revamp The API and code have been through various bits of initial review by serial driver people but they definitely need to live somewhere for a while so the unconverted drivers can get knocked into shape, existing drivers that have been updated can be better tuned and bugs whacked out. This replaces the tty flip buffers with kmalloc objects in rings. In the normal situation for an IRQ driven serial port at typical speeds the behaviour is pretty much the same, two buffers end up allocated and the kernel cycles between them as before. When there are delays or at high speed we now behave far better as the buffer pool can grow a bit rather than lose characters. This also means that we can operate at higher speeds reliably. For drivers that receive characters in blocks (DMA based, USB and especially virtualisation) the layer allows a lot of driver specific code that works around the tty layer with private secondary queues to be removed. The IBM folks need this sort of layer, the smart serial port people do, the virtualisers do (because a virtualised tty typically operates at infinite speed rather than emulating 9600 baud). Finally many drivers had invalid and unsafe attempts to avoid buffer overflows by directly invoking tty methods extracted out of the innards of work queue structs. These are no longer needed and all go away. That fixes various random hangs with serial ports on overflow. The other change in here is to optimise the receive_room path that is used by some callers. It turns out that only one ldisc uses receive room except asa constant and it updates it far far less than the value is read. We thus make it a variable not a function call. I expect the code to contain bugs due to the size alone but I'll be watching and squashing them and feeding out new patches as it goes. Because the buffers now dynamically expand you should only run out of buffering when the kernel runs out of memory for real. That means a lot of the horrible hacks high performance drivers used to do just aren't needed any more. Description: tty_insert_flip_char is an old API and continues to work as before, as does tty_flip_buffer_push() [this is why many drivers dont need modification]. It does now also return the number of chars inserted There are also tty_buffer_request_room(tty, len) which asks for a buffer block of the length requested and returns the space found. This improves efficiency with hardware that knows how much to transfer. and tty_insert_flip_string_flags(tty, str, flags, len) to insert a string of characters and flags For a smart interface the usual code is len = tty_request_buffer_room(tty, amount_hardware_says); tty_insert_flip_string(tty, buffer_from_card, len); More description! At the moment tty buffers are attached directly to the tty. This is causing a lot of the problems related to tty layer locking, also problems at high speed and also with bursty data (such as occurs in virtualised environments) I'm working on ripping out the flip buffers and replacing them with a pool of dynamically allocated buffers. This allows both for old style "byte I/O" devices and also helps virtualisation and smart devices where large blocks of data suddenely materialise and need storing. So far so good. Lots of drivers reference tty->flip.*. Several of them also call directly and unsafely into function pointers it provides. This will all break. Most drivers can use tty_insert_flip_char which can be kept as an API but others need more. At the moment I've added the following interfaces, if people think more will be needed now is a good time to say int tty_buffer_request_room(tty, size) Try and ensure at least size bytes are available, returns actual room (may be zero). At the moment it just uses the flipbuf space but that will change. Repeated calls without characters being added are not cumulative. (ie if you call it with 1, 1, 1, and then 4 you'll have four characters of space. The other functions will also try and grow buffers in future but this will be a more efficient way when you know block sizes. int tty_insert_flip_char(tty, ch, flag) As before insert a character if there is room. Now returns 1 for success, 0 for failure. int tty_insert_flip_string(tty, str, len) Insert a block of non error characters. Returns the number inserted. int tty_prepare_flip_string(tty, strptr, len) Adjust the buffer to allow len characters to be added. Returns a buffer pointer in strptr and the length available. This allows for hardware that needs to use functions like insl or mencpy_fromio. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-09 20:54:13 -08:00
if (tty_buffer_request_room(tty, length) < length) {
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
/* break out & wait for throttling/unthrottling to happen */
dbg("%s - receive room low", __FUNCTION__);
break;
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* 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");
}
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
if (length > 0) {
for (i = 2; i < length+2; i++) {
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* 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);
}
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
if (packet_offset < urb->actual_length) {
/* not completely processed - record progress */
priv->rx_processed = packet_offset;
dbg("%s - incomplete, %d bytes processed, %d remain",
__FUNCTION__, packet_offset,
urb->actual_length - packet_offset);
/* check if we were throttled while processing */
spin_lock_irqsave(&priv->rx_lock, flags);
if (priv->rx_flags & THROTTLED) {
priv->rx_flags |= ACTUALLY_THROTTLED;
spin_unlock_irqrestore(&priv->rx_lock, flags);
dbg("%s - deferring remainder until unthrottled",
__FUNCTION__);
return;
}
spin_unlock_irqrestore(&priv->rx_lock, flags);
/* if the port is closed stop trying to read */
if (port->open_count > 0){
/* delay processing of remainder */
schedule_delayed_work(&priv->rx_work, 1);
} else {
dbg("%s - port is closed", __FUNCTION__);
}
return;
}
/* urb is completely processed */
priv->rx_processed = 0;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* if the port is closed stop trying to read */
if (port->open_count > 0){
/* Continue trying to always read */
usb_fill_bulk_urb(port->read_urb, port->serial->dev,
usb_rcvbulkpipe(port->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, GFP_ATOMIC);
if (result)
err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
}
return;
} /* ftdi_process_read */
static void ftdi_break_ctl( struct usb_serial_port *port, int break_state )
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
__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(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0),
FTDI_SIO_SET_DATA_REQUEST,
FTDI_SIO_SET_DATA_REQUEST_TYPE,
urb_value , priv->interface,
buf, 0, 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_device *dev = port->serial->dev;
unsigned int cflag = port->tty->termios->c_cflag;
struct ftdi_private *priv = usb_get_serial_port_data(port);
__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(dev, usb_sndctrlpipe(dev, 0),
FTDI_SIO_SET_DATA_REQUEST,
FTDI_SIO_SET_DATA_REQUEST_TYPE,
urb_value , priv->interface,
[PATCH] USB: ftdi_sio: fix a couple of timeouts ftdi_sio: Fix timeouts in a couple of usb_control_msg() calls due to change of units from jiffies to milliseconds in 2.6.12. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:52 -07:00
buf, 0, WDR_SHORT_TIMEOUT) < 0) {
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
err("%s FAILED to set databits/stopbits/parity", __FUNCTION__);
}
/* Now do the baudrate */
if ((cflag & CBAUD) == B0 ) {
/* Disable flow control */
if (usb_control_msg(dev, usb_sndctrlpipe(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 */
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
} else {
/* set the baudrate determined before */
if (change_speed(port)) {
[PATCH] USB: ftdi_sio: allow baud rate to be changed without raising RTS and DTR I'm using a 2 port USB RS232 dongle to connect to a serial-IR cradle for a bar code reader). Detecting the baudrate of the serial-IR involves keeping DTR low while changing baudrate. This works using normal 16550A serial ports as well as the FTDI driver version 1.4.0 (Linux 2.6.8) but stopped working with the change to "ensure RTS and DTR are raised when changing baudrate" introduced in version 1.4.1 (Linux 2.6.9). The attached patch fixes this, so RTS and DTR is only raised when changing baudrate iff the previous baudrate was B0. Signed-off-by: Peter Favrholdt <pfavr@how.dk> Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-22 00:48:49 -07:00
err("%s urb failed to set baudrate", __FUNCTION__);
}
/* Ensure RTS and DTR are raised when baudrate changed from 0 */
[PATCH] USB: console: fix oops Prevent NULL dereference when used as a USB-serial console. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-13 22:27:12 +02:00
if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) {
[PATCH] USB: ftdi_sio: allow baud rate to be changed without raising RTS and DTR I'm using a 2 port USB RS232 dongle to connect to a serial-IR cradle for a bar code reader). Detecting the baudrate of the serial-IR involves keeping DTR low while changing baudrate. This works using normal 16550A serial ports as well as the FTDI driver version 1.4.0 (Linux 2.6.8) but stopped working with the change to "ensure RTS and DTR are raised when changing baudrate" introduced in version 1.4.1 (Linux 2.6.9). The attached patch fixes this, so RTS and DTR is only raised when changing baudrate iff the previous baudrate was B0. Signed-off-by: Peter Favrholdt <pfavr@how.dk> Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-22 00:48:49 -07:00
set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
}
/* 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(dev,
usb_sndctrlpipe(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(dev,
usb_sndctrlpipe(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(dev,
usb_sndctrlpipe(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_tiocmget (struct usb_serial_port *port, struct file *file)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
unsigned char buf[2];
int ret;
dbg("%s TIOCMGET", __FUNCTION__);
switch (priv->chip_type) {
case SIO:
/* Request the status from the device */
if ((ret = usb_control_msg(port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0),
FTDI_SIO_GET_MODEM_STATUS_REQUEST,
FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
0, 0,
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(port->serial->dev,
usb_rcvctrlpipe(port->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 (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;
}
static int ftdi_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear)
{
dbg("%s TIOCMSET", __FUNCTION__);
[PATCH] USB: ftdi_sio: Update RTS and DTR simultaneously ftdi_sio: Update RTS and DTR simultaneously, using a single control URB instead of separate control URBs for RTS and DTR. Reinhard Bergmann observed time differences of up to 680 ms with his application on a 2.4.22 kernel when RTS and DTR were updated using separate control URBs, which is unacceptable. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-29 12:16:41 -07:00
return update_mctrl(port, set, clear);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
static int ftdi_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
dbg("%s cmd 0x%04x", __FUNCTION__, cmd);
/* Based on code from acm.c and others */
switch (cmd) {
case TIOCGSERIAL: /* gets serial port data */
return get_serial_info(port, (struct serial_struct __user *) arg);
case TIOCSSERIAL: /* sets serial port data */
return set_serial_info(port, (struct serial_struct __user *) 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)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
dbg("%s - port %d", __FUNCTION__, port->number);
spin_lock_irqsave(&priv->rx_lock, flags);
priv->rx_flags |= THROTTLED;
spin_unlock_irqrestore(&priv->rx_lock, flags);
}
static void ftdi_unthrottle (struct usb_serial_port *port)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
int actually_throttled;
unsigned long flags;
dbg("%s - port %d", __FUNCTION__, port->number);
spin_lock_irqsave(&priv->rx_lock, flags);
actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
spin_unlock_irqrestore(&priv->rx_lock, flags);
if (actually_throttled)
[PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc ftdi_sio: Avoid losing bytes at tty-ldisc. This patch was originally developed by Daniel Smertnig. I (Ian Abbott) made a few changes. It has been tested by both Daniel and I, at least for raw, non-canonical receive data processing. Here is Daniel's original description of the patch: === During a project in which I was using a FTDI 232BM to transmit data at relative high speeds (625kBit/s), I noticed a problem where data was lost even if flow control was enabled: The FTDI-Driver receives 512 Bytes of data over USB at a time, which consists of 8 64-Byte packets. Subtracting the 2 bytes of status information included in each packet this gives 496 "real" data bytes per read. This data is passed (indirectly, via the flip buffers) to the tty line discipline which takes care of throttling when there the free buffer space reaches TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver processes up to 496 bytes at a time, throttling won't happen in time and the line discipline will discard the remaining bytes. To avoid this the patch passes data in 62-byte blocks to the tty layer and checks the available space in the ldisc-buffers. If there isn't enough free space, processing the rest of the data is delayed using a workqueue. Note: The original problem should be easily reproducible with a userspace program which does slow & small reads. === Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-02 10:34:11 +01:00
schedule_work(&priv->rx_work);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
static int __init ftdi_init (void)
{
int retval;
dbg("%s", __FUNCTION__);
[PATCH] USB ftdi_sio: user specified VID/PID ftdi_sio: Support one user specified vendor and product ID via a couple of new module parameters. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-28 18:40:32 +01:00
if (vendor > 0 && product > 0) {
/* Add user specified VID/PID to reserved element of table. */
int i;
for (i = 0; id_table_combined[i].idVendor; i++)
;
id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
id_table_combined[i].idVendor = vendor;
id_table_combined[i].idProduct = product;
}
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
retval = usb_serial_register(&ftdi_sio_device);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
if (retval)
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
goto failed_sio_register;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
retval = usb_register(&ftdi_driver);
if (retval)
goto failed_usb_register;
info(DRIVER_VERSION ":" DRIVER_DESC);
return 0;
failed_usb_register:
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
usb_serial_deregister(&ftdi_sio_device);
failed_sio_register:
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
return retval;
}
static void __exit ftdi_exit (void)
{
dbg("%s", __FUNCTION__);
usb_deregister (&ftdi_driver);
[PATCH] USB ftdi_sio: reduce device id table clutter ftdi_sio: Use a single usb_device_id table and detect the type of chip programatically. The table also flags devices requiring special initialization. The patch makes the driver about 10K smaller and makes it easier to add new device IDs. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 16:45:42 +01:00
usb_serial_deregister (&ftdi_sio_device);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
}
module_init(ftdi_init);
module_exit(ftdi_exit);
MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
[PATCH] USB ftdi_sio: user specified VID/PID ftdi_sio: Support one user specified vendor and product ID via a couple of new module parameters. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-28 18:40:32 +01:00
module_param(vendor, ushort, 0);
MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
__MODULE_STRING(FTDI_VID)")");
module_param(product, ushort, 0);
MODULE_PARM_DESC(vendor, "User specified product ID");
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
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