digi_acceleport.c revision 441b62c1edb986827154768d89bbac0ba779984f
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi AccelePort USB-4 and USB-2 Serial Converters 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Copyright 2000 by Digi International 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* This program is free software; you can redistribute it and/or modify 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* it under the terms of the GNU General Public License as published by 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the Free Software Foundation; either version 2 of the License, or 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (at your option) any later version. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Shamelessly based on Brian Warner's keyspan_pda.c and Greg Kroah-Hartman's 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* usb-serial driver. 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Peter Berger (pberger@brimson.com) 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Al Borchers (borchers@steinerpoint.com) 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (12/03/2001) gkh 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* switched to using port->open_count instead of private version. 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Removed port->active 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (04/08/2001) gb 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Identify version on module load. 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (11/01/2000) Adam J. Richter 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* usb_device_id table support 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (11/01/2000) pberger and borchers 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Turned off the USB_DISABLE_SPD flag for write bulk urbs--it caused 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* USB 4 ports to hang on startup. 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Serialized access to write urbs by adding the dp_write_urb_in_use 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* flag; otherwise, the driver caused SMP system hangs. Watching the 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* urb status is not sufficient. 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (10/05/2000) gkh 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed bug with urb->dev not being set properly, now that the usb 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* core needs it. 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (8/8/2000) pberger and borchers 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed close so that 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - it can timeout while waiting for transmit idle, if needed; 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - it ignores interrupts when flushing the port, turning 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* of modem signalling, and so on; 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - it waits for the flush to really complete before returning. 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Read_bulk_callback and write_bulk_callback check for a closed 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* port before using the tty struct or writing to the port. 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- The two changes above fix the oops caused by interrupted closes. 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added interruptible args to write_oob_command and set_modem_signals 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* and added a timeout arg to transmit_idle; needed for fixes to 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* close. 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added code for rx_throttle and rx_unthrottle so that input flow 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* control works. 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added code to set overrun, parity, framing, and break errors 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (untested). 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Set USB_DISABLE_SPD flag for write bulk urbs, so no 0 length 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* bulk writes are done. These hung the Digi USB device. The 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 0 length bulk writes were a new feature of usb-uhci added in 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the 2.4.0-test6 kernels. 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed mod inc race in open; do mod inc before sleeping to wait 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* for a close to finish. 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (7/31/2000) pberger 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed bugs with hardware handshaking: 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - Added code to set/clear tty->hw_stopped in digi_read_oob_callback() 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* and digi_set_termios() 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added code in digi_set_termios() to 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - add conditional in code handling transition from B0 to only 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* set RTS if RTS/CTS flow control is either not in use or if 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the port is not currently throttled. 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - handle turning off CRTSCTS. 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (7/30/2000) borchers 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added support for more than one Digi USB device by moving 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* globals to a private structure in the pointed to from the 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* usb_serial structure. 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Moved the modem change and transmit idle wait queues into 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the port private structure, so each port has its own queue 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* rather than sharing global queues. 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added support for break signals. 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (7/25/2000) pberger 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added USB-2 support. Note: the USB-2 supports 3 devices: two 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* serial and a parallel port. The parallel port is implemented 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* as a serial-to-parallel converter. That is, the driver actually 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* presents all three USB-2 interfaces as serial ports, but the third 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* one physically connects to a parallel device. Thus, for example, 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* one could plug a parallel printer into the USB-2's third port, 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* but from the kernel's (and userland's) point of view what's 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* actually out there is a serial device. 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (7/15/2000) borchers 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed race in open when a close is in progress. 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Keep count of opens and dec the module use count for each 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* outstanding open when shutdown is called (on disconnect). 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed sanity checks in read_bulk_callback and write_bulk_callback 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* so pointers are checked before use. 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Split read bulk callback into in band and out of band 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* callbacks, and no longer restart read chains if there is 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* a status error or a sanity error. This fixed the seg 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* faults and other errors we used to get on disconnect. 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Port->active is once again a flag as usb-serial intended it 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* to be, not a count. Since it was only a char it would 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* have been limited to 256 simultaneous opens. Now the open 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* count is kept in the port private structure in dp_open_count. 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added code for modularization of the digi_acceleport driver. 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (6/27/2000) pberger and borchers 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Zeroed out sync field in the wakeup_task before first use; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* otherwise the uninitialized value might prevent the task from 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* being scheduled. 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Initialized ret value to 0 in write_bulk_callback, otherwise 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the uninitialized value could cause a spurious debugging message. 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (6/22/2000) pberger and borchers 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Made cond_wait_... inline--apparently on SPARC the flags arg 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* to spin_lock_irqsave cannot be passed to another function 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* to call spin_unlock_irqrestore. Thanks to Pauline Middelink. 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- In digi_set_modem_signals the inner nested spin locks use just 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* spin_lock() rather than spin_lock_irqsave(). The old code 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* mistakenly left interrupts off. Thanks to Pauline Middelink. 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- copy_from_user (which can sleep) is no longer called while a 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* spinlock is held. We copy to a local buffer before getting 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the spinlock--don't like the extra copy but the code is simpler. 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Printk and dbg are no longer called while a spin lock is held. 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (6/4/2000) pberger and borchers 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Replaced separate calls to spin_unlock_irqrestore and 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* interruptible_sleep_on_timeout with a new function 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* cond_wait_interruptible_timeout_irqrestore. This eliminates 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the race condition where the wake up could happen after 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the unlock and before the sleep. 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Close now waits for output to drain. 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Open waits until any close in progress is finished. 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- All out of band responses are now processed, not just the 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* first in a USB packet. 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed a bug that prevented the driver from working when the 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* first Digi port was not the first USB serial port--the driver 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* was mistakenly using the external USB serial port number to 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* try to index into its internal ports. 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed an SMP bug -- write_bulk_callback is called directly from 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* an interrupt, so spin_lock_irqsave/spin_unlock_irqrestore are 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* needed for locks outside write_bulk_callback that are also 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* acquired by write_bulk_callback to prevent deadlocks. 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed support for select() by making digi_chars_in_buffer() 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* return 256 when -EINPROGRESS is set, as the line discipline 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* code in n_tty.c expects. 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed an include file ordering problem that prevented debugging 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* messages from working. 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed an intermittent timeout problem that caused writes to 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* sometimes get stuck on some machines on some kernels. It turns 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* out in these circumstances write_chan() (in n_tty.c) was 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* asleep waiting for our wakeup call. Even though we call 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* wake_up_interruptible() in digi_write_bulk_callback(), there is 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* a race condition that could cause the wakeup to fail: if our 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* wake_up_interruptible() call occurs between the time that our 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* driver write routine finishes and write_chan() sets current->state 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* to TASK_INTERRUPTIBLE, the effect of our wakeup setting the state 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* to TASK_RUNNING will be lost and write_chan's subsequent call to 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* schedule() will never return (unless it catches a signal). 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* This race condition occurs because write_bulk_callback() (and thus 1600779bf2d2ecc4d9b1e9437ae659f50e6776a7666Matt LaPlante* the wakeup) are called asynchronously from an interrupt, rather than 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* from the scheduler. We can avoid the race by calling the wakeup 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* from the scheduler queue and that's our fix: Now, at the end of 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* write_bulk_callback() we queue up a wakeup call on the scheduler 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* task queue. We still also invoke the wakeup directly since that 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* squeezes a bit more performance out of the driver, and any lost 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* race conditions will get cleaned up at the next scheduler run. 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* NOTE: The problem also goes away if you comment out 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the two code lines in write_chan() where current->state 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* is set to TASK_RUNNING just before calling driver.write() and to 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* TASK_INTERRUPTIBLE immediately afterwards. This is why the 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* problem did not show up with the 2.2 kernels -- they do not 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* include that code. 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (5/16/2000) pberger and borchers 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added timeouts to sleeps, to defend against lost wake ups. 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Handle transition to/from B0 baud rate in digi_set_termios. 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (5/13/2000) pberger and borchers 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- All commands now sent on out of band port, using 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* digi_write_oob_command. 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Get modem control signals whenever they change, support TIOCMGET/ 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* SET/BIS/BIC ioctls. 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- digi_set_termios now supports parity, word size, stop bits, and 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* receive enable. 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Cleaned up open and close, use digi_set_termios and 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* digi_write_oob_command to set port parameters. 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added digi_startup_device to start read chains on all ports. 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Write buffer is only used when count==1, to be sure put_char can 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* write a char (unless the buffer is full). 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (5/10/2000) pberger and borchers 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added MOD_INC_USE_COUNT/MOD_DEC_USE_COUNT calls on open/close. 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed problem where the first incoming character is lost on 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* port opens after the first close on that port. Now we keep 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the read_urb chain open until shutdown. 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Added more port conditioning calls in digi_open and digi_close. 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Convert port->active to a use count so that we can deal with multiple 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* opens and closes properly. 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- Fixed some problems with the locking code. 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (5/3/2000) pberger and borchers 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -- First alpha version of the driver--many known limitations and bugs. 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Locking and SMP 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - Each port, including the out-of-band port, has a lock used to 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* serialize all access to the port's private structure. 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - The port lock is also used to serialize all writes and access to 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the port's URB. 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - The port lock is also used for the port write_wait condition 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* variable. Holding the port lock will prevent a wake up on the 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* port's write_wait; this can be used with cond_wait_... to be sure 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the wake up is not lost in a race when dropping the lock and 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* sleeping waiting for the wakeup. 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - digi_write() does not sleep, since it is sometimes called on 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* interrupt time. 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - digi_write_bulk_callback() and digi_read_bulk_callback() are 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* called directly from interrupts. Hence spin_lock_irqsave() 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* and spin_unlock_irqrestore() are used in the rest of the code 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* for any locks they acquire. 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - digi_write_bulk_callback() gets the port lock before waking up 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* processes sleeping on the port write_wait. It also schedules 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* wake ups so they happen from the scheduler, because the tty 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* system can miss wake ups from interrupts. 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - All sleeps use a timeout of DIGI_RETRY_TIMEOUT before looping to 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* recheck the condition they are sleeping on. This is defensive, 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* in case a wake up is lost. 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* - Following Documentation/DocBook/kernel-locking.pdf no spin locks 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* are held when calling copy_to/from_user or printk. 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* $Id: digi_acceleport.c,v 1.80.1.2 2000/11/02 05:45:08 root Exp $ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_driver.h> 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_flip.h> 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/spinlock.h> 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/workqueue.h> 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/wait.h> 249a969888ce91673c7f4b86520d851a6f0d5a5fa7dGreg Kroah-Hartman#include <linux/usb/serial.h> 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Defines */ 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version Information 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_VERSION "v1.80.1.2" 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_AUTHOR "Peter Berger <pberger@brimson.com>, Al Borchers <borchers@steinerpoint.com>" 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "Digi AccelePort USB-2/USB-4 Serial Converter driver" 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* port output buffer length -- must be <= transfer buffer length - 2 */ 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* so we can be sure to send the full buffer in one urb */ 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUT_BUF_SIZE 8 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* port input buffer length -- must be >= transfer buffer length - 3 */ 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* so we can be sure to hold at least one full buffer from one urb */ 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_IN_BUF_SIZE 64 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* retry timeout while sleeping */ 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RETRY_TIMEOUT (HZ/10) 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* timeout while waiting for tty output to drain in close */ 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* this delay is used twice in close, so the total delay could */ 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* be twice this value */ 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CLOSE_TIMEOUT (5*HZ) 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* AccelePort USB Defines */ 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ids */ 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_VENDOR_ID 0x05c5 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_2_ID 0x0002 /* USB-2 */ 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_4_ID 0x0004 /* USB-4 */ 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* commands 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "INB": can be used on the in-band endpoint 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "OOB": can be used on the out-of-band endpoint 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_BAUD_RATE 0 /* INB, OOB */ 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_WORD_SIZE 1 /* INB, OOB */ 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_PARITY 2 /* INB, OOB */ 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_STOP_BITS 3 /* INB, OOB */ 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_INPUT_FLOW_CONTROL 4 /* INB, OOB */ 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_OUTPUT_FLOW_CONTROL 5 /* INB, OOB */ 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_DTR_SIGNAL 6 /* INB, OOB */ 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_RTS_SIGNAL 7 /* INB, OOB */ 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_READ_INPUT_SIGNALS 8 /* OOB */ 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_IFLUSH_FIFO 9 /* OOB */ 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_RECEIVE_ENABLE 10 /* INB, OOB */ 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_BREAK_CONTROL 11 /* INB, OOB */ 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_LOCAL_LOOPBACK 12 /* INB, OOB */ 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_TRANSMIT_IDLE 13 /* INB, OOB */ 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_READ_UART_REGISTER 14 /* OOB */ 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_WRITE_UART_REGISTER 15 /* INB, OOB */ 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_AND_UART_REGISTER 16 /* INB, OOB */ 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_OR_UART_REGISTER 17 /* INB, OOB */ 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SEND_DATA 18 /* INB */ 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_RECEIVE_DATA 19 /* INB */ 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_RECEIVE_DISABLE 20 /* INB */ 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_GET_PORT_TYPE 21 /* OOB */ 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* baud rates */ 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_50 0 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_75 1 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_110 2 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_150 3 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_200 4 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_300 5 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_600 6 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_1200 7 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_1800 8 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_2400 9 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_4800 10 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_7200 11 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_9600 12 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_14400 13 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_19200 14 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_28800 15 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_38400 16 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_57600 17 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_76800 18 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_115200 19 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_153600 20 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_230400 21 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_460800 22 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* arguments */ 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_5 0 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_6 1 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_7 2 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_8 3 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_NONE 0 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_ODD 1 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_EVEN 2 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_MARK 3 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_SPACE 4 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_STOP_BITS_1 0 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_STOP_BITS_2 1 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INPUT_FLOW_CONTROL_XON_XOFF 1 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INPUT_FLOW_CONTROL_RTS 2 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INPUT_FLOW_CONTROL_DTR 4 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF 1 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUTPUT_FLOW_CONTROL_CTS 2 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUTPUT_FLOW_CONTROL_DSR 4 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DTR_INACTIVE 0 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DTR_ACTIVE 1 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DTR_INPUT_FLOW_CONTROL 2 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_INACTIVE 0 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_ACTIVE 1 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_INPUT_FLOW_CONTROL 2 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_TOGGLE 3 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_FLUSH_TX 1 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_FLUSH_RX 2 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RESUME_TX 4 /* clears xoff condition */ 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_TRANSMIT_NOT_IDLE 0 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_TRANSMIT_IDLE 1 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DISABLE 0 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_ENABLE 1 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DEASSERT 0 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_ASSERT 1 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* in band status codes */ 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OVERRUN_ERROR 4 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_ERROR 8 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_FRAMING_ERROR 16 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BREAK_ERROR 32 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* out of band status */ 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_NO_ERROR 0 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAD_FIRST_PARAMETER 1 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAD_SECOND_PARAMETER 2 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INVALID_LINE 3 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INVALID_OPCODE 4 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* input signals */ 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_SLOT 1 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_ERR 2 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_BUSY 4 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_PE 8 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_CTS 16 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_DSR 32 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_RI 64 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_DCD 128 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Structures */ 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct digi_serial { 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t ds_serial_lock; 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *ds_oob_port; /* out-of-band port */ 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ds_oob_port_num; /* index of out-of-band port */ 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ds_device_started; 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct digi_port { 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t dp_port_lock; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_port_num; 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_out_buf_len; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char dp_out_buf[DIGI_OUT_BUF_SIZE]; 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_write_urb_in_use; 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int dp_modem_signals; 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_modem_change_wait; 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_transmit_idle; 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_transmit_idle_wait; 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_throttled; 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_throttle_restart; 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_flush_wait; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_in_close; /* close in progress */ 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_close_wait; /* wait queue for close */ 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct work_struct dp_wakeup_work; 430c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct usb_serial_port *dp_port; 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Local Function Declarations */ 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 436c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_wakeup_write(struct usb_serial_port *port); 437c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void digi_wakeup_write_lock(struct work_struct *work); 438c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_oob_command(struct usb_serial_port *port, 439c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, int interruptible); 440c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_inb_command(struct usb_serial_port *port, 441c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, unsigned long timeout); 442c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_set_modem_signals(struct usb_serial_port *port, 443c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int modem_signals, int interruptible); 444c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_transmit_idle(struct usb_serial_port *port, 445c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned long timeout); 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void digi_rx_throttle (struct usb_serial_port *port); 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void digi_rx_unthrottle (struct usb_serial_port *port); 448c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_set_termios(struct usb_serial_port *port, 449c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox struct ktermios *old_termios); 450c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_break_ctl(struct usb_serial_port *port, int break_state); 451c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_ioctl(struct usb_serial_port *port, struct file *file, 452c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int cmd, unsigned long arg); 453c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_tiocmget(struct usb_serial_port *port, struct file *file); 454c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_tiocmset(struct usb_serial_port *port, struct file *file, 455c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int set, unsigned int clear); 456c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write(struct usb_serial_port *port, const unsigned char *buf, int count); 457c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_write_bulk_callback(struct urb *urb); 458c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_room(struct usb_serial_port *port); 459c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_chars_in_buffer(struct usb_serial_port *port); 460c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_open(struct usb_serial_port *port, struct file *filp); 461c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_close(struct usb_serial_port *port, struct file *filp); 462c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup_device(struct usb_serial *serial); 463c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup(struct usb_serial *serial); 464c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_shutdown(struct usb_serial *serial); 465c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_read_bulk_callback(struct urb *urb); 466c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_inb_callback(struct urb *urb); 467c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_oob_callback(struct urb *urb); 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Statics */ 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug; 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_device_id id_table_combined [] = { 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_2_ID) }, 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_4_ID) }, 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_device_id id_table_2 [] = { 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_2_ID) }, 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_device_id id_table_4 [] = { 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_4_ID) }, 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DEVICE_TABLE (usb, id_table_combined); 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_driver digi_driver = { 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "digi_acceleport", 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .probe = usb_serial_probe, 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disconnect = usb_serial_disconnect, 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table_combined, 497ba9dc657af86d05d2971633e57d1f6f94ed60472Greg Kroah-Hartman .no_dynamic_id = 1, 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* device info needed for the Digi serial converter */ 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 503ea65370d025f5005649e5cb37c4d025e92c6fc38Greg Kroah-Hartmanstatic struct usb_serial_driver digi_acceleport_2_device = { 50418fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman .driver = { 505269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .owner = THIS_MODULE, 506269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .name = "digi_2", 50718fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman }, 508269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .description = "Digi 2 port USB adapter", 509d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .usb_driver = &digi_driver, 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table_2, 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .num_ports = 3, 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = digi_open, 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = digi_close, 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = digi_write, 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = digi_write_room, 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_bulk_callback = digi_write_bulk_callback, 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_bulk_callback = digi_read_bulk_callback, 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = digi_chars_in_buffer, 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = digi_rx_throttle, 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = digi_rx_unthrottle, 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = digi_ioctl, 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = digi_set_termios, 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = digi_break_ctl, 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = digi_tiocmget, 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = digi_tiocmset, 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .attach = digi_startup, 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .shutdown = digi_shutdown, 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 530ea65370d025f5005649e5cb37c4d025e92c6fc38Greg Kroah-Hartmanstatic struct usb_serial_driver digi_acceleport_4_device = { 53118fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman .driver = { 532269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .owner = THIS_MODULE, 533269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .name = "digi_4", 53418fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman }, 535269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .description = "Digi 4 port USB adapter", 536d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .usb_driver = &digi_driver, 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table_4, 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .num_ports = 4, 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = digi_open, 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = digi_close, 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = digi_write, 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = digi_write_room, 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_bulk_callback = digi_write_bulk_callback, 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_bulk_callback = digi_read_bulk_callback, 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = digi_chars_in_buffer, 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = digi_rx_throttle, 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = digi_rx_unthrottle, 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = digi_ioctl, 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = digi_set_termios, 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = digi_break_ctl, 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = digi_tiocmget, 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = digi_tiocmset, 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .attach = digi_startup, 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .shutdown = digi_shutdown, 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Functions */ 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Cond Wait Interruptible Timeout Irqrestore 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Do spin_unlock_irqrestore and interruptible_sleep_on_timeout 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* so that wake ups are not lost if they occur between the unlock 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* and the sleep. In other words, spin_unlock_irqrestore and 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* interruptible_sleep_on_timeout are "atomic" with respect to 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* wake ups. This is used to implement condition variables. 56845f23f189ca66d98b1f8b7f3d30a194d3188039dNishanth Aravamudan* 56945f23f189ca66d98b1f8b7f3d30a194d3188039dNishanth Aravamudan* interruptible_sleep_on_timeout is deprecated and has been replaced 57045f23f189ca66d98b1f8b7f3d30a194d3188039dNishanth Aravamudan* with the equivalent code. 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 573c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic long cond_wait_interruptible_timeout_irqrestore( 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t *q, long timeout, 575c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spinlock_t *lock, unsigned long flags) 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEFINE_WAIT(wait); 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57945f23f189ca66d98b1f8b7f3d30a194d3188039dNishanth Aravamudan prepare_to_wait(q, &wait, TASK_INTERRUPTIBLE); 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(lock, flags); 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = schedule_timeout(timeout); 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finish_wait(q, &wait); 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return timeout; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Wakeup Write 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Wake up port, line discipline, and tty processes sleeping 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* on writes. 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 595c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void digi_wakeup_write_lock(struct work_struct *work) 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 597c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox struct digi_port *priv = container_of(work, struct digi_port, dp_wakeup_work); 598c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct usb_serial_port *port = priv->dp_port; 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 601c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 602c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_wakeup_write(port); 603c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 606c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_wakeup_write(struct usb_serial_port *port) 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 608b963a8441cb95999c97bea379607071a869c65f0Jiri Slaby tty_wakeup(port->tty); 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Write OOB Command 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Write commands on the out of band port. Commands are 4 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* bytes each, multiple commands can be sent at once, and 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* no command will be split across USB packets. Returns 0 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* if successful, -EINTR if interrupted while sleeping and 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the interruptible flag is true, or a negative error 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* returned by usb_submit_urb. 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 623c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_oob_command(struct usb_serial_port *port, 624c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, int interruptible) 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *oob_port = (struct usb_serial_port *)((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port; 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *oob_priv = usb_get_serial_port_data(oob_port); 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 633c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_oob_command: TOP: port=%d, count=%d", oob_priv->dp_port_num, count); 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 635c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 636c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while(count > 0) { 637c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while(oob_port->write_urb->status == -EINPROGRESS 638c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox || oob_priv->dp_write_urb_in_use) { 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &oob_port->write_wait, DIGI_RETRY_TIMEOUT, 641c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &oob_priv->dp_port_lock, flags); 642c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (interruptible && signal_pending(current)) 643c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 644c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* len must be a multiple of 4, so commands are not split */ 648c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox len = min(count, oob_port->bulk_out_size); 649c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (len > 4) 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len &= ~3; 651c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(oob_port->write_urb->transfer_buffer, buf, len); 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_port->write_urb->transfer_buffer_length = len; 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_port->write_urb->dev = port->serial->dev; 654c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC)) == 0) { 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_priv->dp_write_urb_in_use = 1; 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += len; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 660c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&oob_priv->dp_port_lock, flags); 661c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 662441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison err("%s: usb_submit_urb failed, ret=%d", __func__, ret); 663c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Write In Band Command 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Write commands on the given port. Commands are 4 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* bytes each, multiple commands can be sent at once, and 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* no command will be split across USB packets. If timeout 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* is non-zero, write in band command will return after 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* waiting unsuccessfully for the URB status to clear for 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* timeout ticks. Returns 0 if successful, or a negative 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* error returned by digi_write. 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 680c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_inb_command(struct usb_serial_port *port, 681c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, unsigned long timeout) 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = port->write_urb->transfer_buffer; 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 689c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_inb_command: TOP: port=%d, count=%d", 690c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, count); 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 692c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (timeout) 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout += jiffies; 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = ULONG_MAX; 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 697c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 698c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while(count > 0 && ret == 0) { 699c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while((port->write_urb->status == -EINPROGRESS 700c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox || priv->dp_write_urb_in_use) && time_before(jiffies, timeout)) { 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &port->write_wait, DIGI_RETRY_TIMEOUT, 703c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &priv->dp_port_lock, flags); 704c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (signal_pending(current)) 705c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 706c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* len must be a multiple of 4 and small enough to */ 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* guarantee the write will send buffered data first, */ 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* so commands are in order with data and not split */ 712c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox len = min(count, port->bulk_out_size-2-priv->dp_out_buf_len); 713c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (len > 4) 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len &= ~3; 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* write any buffered data first */ 717c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_out_buf_len > 0) { 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[0] = DIGI_CMD_SEND_DATA; 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[1] = priv->dp_out_buf_len; 720c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data + 2, priv->dp_out_buf, 721c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_out_buf_len); 722c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data + 2 + priv->dp_out_buf_len, buf, len); 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length 724c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox = priv->dp_out_buf_len + 2 + len; 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 726c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data, buf, len); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length = len; 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->dev = port->serial->dev; 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) { 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 1; 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += len; 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 739c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 741c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 742c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox err("%s: usb_submit_urb failed, ret=%d, port=%d", 743441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 744c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Set Modem Signals 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Sets or clears DTR and RTS on the port, according to the 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* modem_signals argument. Use TIOCM_DTR and TIOCM_RTS flags 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* for the modem_signals argument. Returns 0 if successful, 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -EINTR if interrupted while sleeping, or a non-zero error 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* returned by usb_submit_urb. 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 758c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_set_modem_signals(struct usb_serial_port *port, 759c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int modem_signals, int interruptible) 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *port_priv = usb_get_serial_port_data(port); 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *oob_port = (struct usb_serial_port *)((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port; 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *oob_priv = usb_get_serial_port_data(oob_port); 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = oob_port->write_urb->transfer_buffer; 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 770c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_modem_signals: TOP: port=%d, modem_signals=0x%x", 771c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox port_priv->dp_port_num, modem_signals); 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 773c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 774c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&port_priv->dp_port_lock); 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 776c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while(oob_port->write_urb->status == -EINPROGRESS || oob_priv->dp_write_urb_in_use) { 777c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&port_priv->dp_port_lock); 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &oob_port->write_wait, DIGI_RETRY_TIMEOUT, 780c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &oob_priv->dp_port_lock, flags); 781c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (interruptible && signal_pending(current)) 782c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 783c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 784c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&port_priv->dp_port_lock); 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[0] = DIGI_CMD_SET_DTR_SIGNAL; 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[1] = port_priv->dp_port_num; 788c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox data[2] = (modem_signals&TIOCM_DTR) ? DIGI_DTR_ACTIVE : DIGI_DTR_INACTIVE; 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[3] = 0; 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[4] = DIGI_CMD_SET_RTS_SIGNAL; 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[5] = port_priv->dp_port_num; 792c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox data[6] = (modem_signals&TIOCM_RTS) ? DIGI_RTS_ACTIVE : DIGI_RTS_INACTIVE; 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[7] = 0; 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_port->write_urb->transfer_buffer_length = 8; 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_port->write_urb->dev = port->serial->dev; 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 798c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC)) == 0) { 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_priv->dp_write_urb_in_use = 1; 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_priv->dp_modem_signals = 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (port_priv->dp_modem_signals&~(TIOCM_DTR|TIOCM_RTS)) 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | (modem_signals&(TIOCM_DTR|TIOCM_RTS)); 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 804c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&port_priv->dp_port_lock); 805c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&oob_priv->dp_port_lock, flags); 806c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 807441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison err("%s: usb_submit_urb failed, ret=%d", __func__, ret); 808c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Transmit Idle 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi transmit idle waits, up to timeout ticks, for the transmitter 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* to go idle. It returns 0 if successful or a negative error. 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* There are race conditions here if more than one process is calling 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* digi_transmit_idle on the same port at the same time. However, this 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* is only called from close, and only one process can be in close on a 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* port at a time, so its ok. 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 823c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_transmit_idle(struct usb_serial_port *port, 824c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned long timeout) 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[2]; 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 831c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 0; 833c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_TRANSMIT_IDLE; 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = 0; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout += jiffies; 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 840c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = digi_write_inb_command(port, buf, 2, timeout - jiffies)) != 0) 841c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 843c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 845c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while(time_before(jiffies, timeout) && !priv->dp_transmit_idle) { 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &priv->dp_transmit_idle_wait, DIGI_RETRY_TIMEOUT, 848c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &priv->dp_port_lock, flags); 849c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (signal_pending(current)) 850c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 851c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 0; 854c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 855c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 860c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_rx_throttle(struct usb_serial_port *port) 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 866c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_rx_throttle: TOP: port=%d", priv->dp_port_num); 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* stop receiving characters by not resubmitting the read urb */ 869c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttled = 1; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttle_restart = 0; 872c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 876c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_rx_unthrottle(struct usb_serial_port *port) 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 882c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num); 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 884c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 88639892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum /* turn throttle off */ 88739892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum priv->dp_throttled = 0; 88839892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum priv->dp_throttle_restart = 0; 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* restart read chain */ 891c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_throttle_restart) { 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->read_urb->dev = port->serial->dev; 893c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox ret = usb_submit_urb(port->read_urb, GFP_ATOMIC); 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 896c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 898c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 899c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox err("%s: usb_submit_urb failed, ret=%d, port=%d", 900441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 904c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_set_termios(struct usb_serial_port *port, 905c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox struct ktermios *old_termios) 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 909c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox struct tty_struct *tty = port->tty; 910c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int iflag = tty->termios->c_iflag; 911c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int cflag = tty->termios->c_cflag; 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int old_iflag = old_termios->c_iflag; 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int old_cflag = old_termios->c_cflag; 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[32]; 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int modem_signals; 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int arg,ret; 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = 0; 918c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox speed_t baud; 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 920c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_termios: TOP: port=%d, iflag=0x%x, old_iflag=0x%x, cflag=0x%x, old_cflag=0x%x", priv->dp_port_num, iflag, old_iflag, cflag, old_cflag); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set baud rate */ 923c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((baud = tty_get_baud_rate(tty)) != tty_termios_baud_rate(old_termios)) { 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = -1; 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reassert DTR and (maybe) RTS on transition from B0 */ 927c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((old_cflag&CBAUD) == B0) { 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* don't set RTS if using hardware flow control */ 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* and throttling input */ 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds modem_signals = TIOCM_DTR; 931c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (!(tty->termios->c_cflag & CRTSCTS) || 932c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox !test_bit(TTY_THROTTLED, &tty->flags)) 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds modem_signals |= TIOCM_RTS; 934c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_set_modem_signals(port, modem_signals, 1); 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 936c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox switch (baud) { 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* drop DTR and RTS on transition to B0 */ 938c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 0: digi_set_modem_signals(port, 0, 1); break; 939c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 50: arg = DIGI_BAUD_50; break; 940c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 75: arg = DIGI_BAUD_75; break; 941c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 110: arg = DIGI_BAUD_110; break; 942c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 150: arg = DIGI_BAUD_150; break; 943c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 200: arg = DIGI_BAUD_200; break; 944c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 300: arg = DIGI_BAUD_300; break; 945c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 600: arg = DIGI_BAUD_600; break; 946c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 1200: arg = DIGI_BAUD_1200; break; 947c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 1800: arg = DIGI_BAUD_1800; break; 948c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 2400: arg = DIGI_BAUD_2400; break; 949c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 4800: arg = DIGI_BAUD_4800; break; 950c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 9600: arg = DIGI_BAUD_9600; break; 951c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 19200: arg = DIGI_BAUD_19200; break; 952c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 38400: arg = DIGI_BAUD_38400; break; 953c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 57600: arg = DIGI_BAUD_57600; break; 954c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 115200: arg = DIGI_BAUD_115200; break; 955c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 230400: arg = DIGI_BAUD_230400; break; 956c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox case 460800: arg = DIGI_BAUD_460800; break; 957c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox default: 958c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox arg = DIGI_BAUD_9600; 959c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox baud = 9600; 960c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox break; 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 962c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (arg != -1) { 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_BAUD_RATE; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set parity */ 9707fa36a994cb4298f29994a248ced831be8dc7051Alan Cox tty->termios->c_cflag &= ~CMSPAR; 9717fa36a994cb4298f29994a248ced831be8dc7051Alan Cox 972c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&(PARENB|PARODD)) != (old_cflag&(PARENB|PARODD))) { 973c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (cflag&PARENB) { 974c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (cflag&PARODD) 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_PARITY_ODD; 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_PARITY_EVEN; 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_PARITY_NONE; 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_PARITY; 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set word size */ 987c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&CSIZE) != (old_cflag&CSIZE)) { 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = -1; 989c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox switch (cflag&CSIZE) { 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS5: arg = DIGI_WORD_SIZE_5; break; 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS6: arg = DIGI_WORD_SIZE_6; break; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS7: arg = DIGI_WORD_SIZE_7; break; 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS8: arg = DIGI_WORD_SIZE_8; break; 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 995c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_termios: can't handle word size %d", 996c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox (cflag&CSIZE)); 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1000c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (arg != -1) { 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_WORD_SIZE; 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set stop bits */ 1010c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&CSTOPB) != (old_cflag&CSTOPB)) { 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1012c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&CSTOPB)) 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_STOP_BITS_2; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_STOP_BITS_1; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_STOP_BITS; 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set input flow control */ 1025c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((iflag&IXOFF) != (old_iflag&IXOFF) 1026c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox || (cflag&CRTSCTS) != (old_cflag&CRTSCTS)) { 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = 0; 1028c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (iflag&IXOFF) 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_INPUT_FLOW_CONTROL_XON_XOFF; 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_INPUT_FLOW_CONTROL_XON_XOFF; 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1033c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (cflag&CRTSCTS) { 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_INPUT_FLOW_CONTROL_RTS; 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* On USB-4 it is necessary to assert RTS prior */ 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* to selecting RTS input flow control. */ 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_RTS_SIGNAL; 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_RTS_ACTIVE; 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_INPUT_FLOW_CONTROL_RTS; 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_INPUT_FLOW_CONTROL; 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set output flow control */ 10537fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if ((iflag & IXON) != (old_iflag & IXON) 10547fa36a994cb4298f29994a248ced831be8dc7051Alan Cox || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = 0; 10567fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if (iflag & IXON) 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF; 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF; 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10617fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if (cflag & CRTSCTS) { 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_OUTPUT_FLOW_CONTROL_CTS; 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_OUTPUT_FLOW_CONTROL_CTS; 1065c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty->hw_stopped = 0; 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL; 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set receive enable/disable */ 10757fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if ((cflag & CREAD) != (old_cflag & CREAD)) { 10767fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if (cflag & CREAD) 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_ENABLE; 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_DISABLE; 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_RECEIVE_ENABLE; 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1086c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = digi_write_oob_command(port, buf, i, 1)) != 0) 1087c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_termios: write oob failed, ret=%d", ret); 10887fa36a994cb4298f29994a248ced831be8dc7051Alan Cox tty_encode_baud_rate(tty, baud, baud); 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1092c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_break_ctl(struct usb_serial_port *port, int break_state) 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[4]; 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_BREAK_CONTROL; 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = 2; /* length */ 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = break_state ? 1 : 0; 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = 0; /* pad */ 1100c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_write_inb_command(port, buf, 4, 0); 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1104c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_tiocmget(struct usb_serial_port *port, struct file *file) 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int val; 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1110441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: TOP: port=%d", __func__, priv->dp_port_num); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1112c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = priv->dp_modem_signals; 1114c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return val; 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1119c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_tiocmset(struct usb_serial_port *port, struct file *file, 1120c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int set, unsigned int clear) 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int val; 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1126441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: TOP: port=%d", __func__, priv->dp_port_num); 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1128c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = (priv->dp_modem_signals & ~clear) | set; 1130c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 1131c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return digi_set_modem_signals(port, val, 1); 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1135c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_ioctl(struct usb_serial_port *port, struct file *file, 1136c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int cmd, unsigned long arg) 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 1139c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_ioctl: TOP: port=%d, cmd=0x%x", priv->dp_port_num, cmd); 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCMIWAIT: 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/ 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* TODO */ 1145c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCGICOUNT: 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return count of modemline transitions */ 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* TODO */ 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1151c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -ENOIOCTLCMD; 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1155c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write(struct usb_serial_port *port, const unsigned char *buf, int count) 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret,data_len,new_len; 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = port->write_urb->transfer_buffer; 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1163c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write: TOP: port=%d, count=%d, in_interrupt=%ld", 1164c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, count, in_interrupt()); 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy user data (which can sleep) before getting spin lock */ 1167c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox count = min(count, port->bulk_out_size-2); 1168c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox count = min(64, count); 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* be sure only one write proceeds at a time */ 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* there are races on the port private buffer */ 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* and races to check write_urb->status */ 1173c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for urb status clear to submit another urb */ 1176c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->write_urb->status == -EINPROGRESS || priv->dp_write_urb_in_use) { 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* buffer data if count is 1 (probably put_char) if possible */ 1178c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (count == 1 && priv->dp_out_buf_len < DIGI_OUT_BUF_SIZE) { 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf[priv->dp_out_buf_len++] = *buf; 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_len = 1; 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_len = 0; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1184c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 1185c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return new_len; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allow space for any buffered data and for new data, up to */ 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* transfer buffer size - 2 (for command and length bytes) */ 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_len = min(count, port->bulk_out_size-2-priv->dp_out_buf_len); 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_len = new_len + priv->dp_out_buf_len; 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1193c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (data_len == 0) { 1194c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 1195c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length = data_len+2; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->dev = port->serial->dev; 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *data++ = DIGI_CMD_SEND_DATA; 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *data++ = data_len; 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy in buffered data first */ 1205c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data, priv->dp_out_buf, priv->dp_out_buf_len); 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data += priv->dp_out_buf_len; 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy in new data */ 1209c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data, buf, new_len); 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) { 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 1; 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = new_len; 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return length of new data written, or error */ 1218c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 1219c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret < 0) 1220c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox err("%s: usb_submit_urb failed, ret=%d, port=%d", 1221441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 1222c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write: returning %d", ret); 1223c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1227c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_write_bulk_callback(struct urb *urb) 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *)urb->context; 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial; 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv; 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv; 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 123585d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int status = urb->status; 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1237c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_bulk_callback: TOP, urb->status=%d", status); 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port and serial sanity check */ 1240c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port == NULL || (priv=usb_get_serial_port_data(port)) == NULL) { 124185d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman err("%s: port or port->private is NULL, status=%d", 1242441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, status); 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial = port->serial; 1246c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (serial == NULL || (serial_priv=usb_get_serial_data(serial)) == NULL) { 124785d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman err("%s: serial or serial->private is NULL, status=%d", 1248441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, status); 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle oob callback */ 1253c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_port_num == serial_priv->ds_oob_port_num) { 1254c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_bulk_callback: oob callback"); 1255c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 1257c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&port->write_wait); 1258c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* try to send any buffered data on this port, if it is open */ 1263c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 1265c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->open_count && port->write_urb->status != -EINPROGRESS 1266c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox && priv->dp_out_buf_len > 0) { 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned char *)(port->write_urb->transfer_buffer)) 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (unsigned char)DIGI_CMD_SEND_DATA; 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned char *)(port->write_urb->transfer_buffer)+1) 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (unsigned char)priv->dp_out_buf_len; 1271c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox port->write_urb->transfer_buffer_length = priv->dp_out_buf_len+2; 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->dev = serial->dev; 1273c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(port->write_urb->transfer_buffer+2, priv->dp_out_buf, 1274c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_out_buf_len); 1275c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) { 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 1; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wake up processes sleeping on writes immediately */ 1281c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_wakeup_write(port); 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* also queue up a wakeup at scheduler time, in case we */ 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* lost the race in write_chan(). */ 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule_work(&priv->dp_wakeup_work); 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1286c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 1287c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 1288c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox err("%s: usb_submit_urb failed, ret=%d, port=%d", 1289441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1292c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_room(struct usb_serial_port *port) 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int room; 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1299c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1301c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->write_urb->status == -EINPROGRESS || priv->dp_write_urb_in_use) 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds room = 0; 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds room = port->bulk_out_size - 2 - priv->dp_out_buf_len; 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1306c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 1307c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_room: port=%d, room=%d", priv->dp_port_num, room); 1308c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return room; 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1312c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_chars_in_buffer(struct usb_serial_port *port) 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1318c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->write_urb->status == -EINPROGRESS 1319c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox || priv->dp_write_urb_in_use) { 1320c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_chars_in_buffer: port=%d, chars=%d", 1321c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, port->bulk_out_size - 2); 1322c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox /* return(port->bulk_out_size - 2); */ 1323c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 256; 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1325c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_chars_in_buffer: port=%d, chars=%d", 1326c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, priv->dp_out_buf_len); 1327c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return priv->dp_out_buf_len; 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1333c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_open(struct usb_serial_port *port, struct file *filp) 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[32]; 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 1338606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox struct ktermios not_termios; 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1341c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_open: TOP: port=%d, open_count=%d", 1342c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, port->open_count); 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* be sure the device is started up */ 1345c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (digi_startup_device(port->serial) != 0) 1346c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -ENXIO; 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1348c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* don't wait on a close in progress for non-blocking opens */ 1351c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_in_close && (filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) { 1352c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 1353c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EAGAIN; 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for a close in progress to finish */ 1357c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while(priv->dp_in_close) { 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &priv->dp_close_wait, DIGI_RETRY_TIMEOUT, 1360c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &priv->dp_port_lock, flags); 1361c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (signal_pending(current)) 1362c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 1363c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1366c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* read modem signals automatically whenever they change */ 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_READ_INPUT_SIGNALS; 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = priv->dp_port_num; 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = DIGI_ENABLE; 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = 0; 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* flush fifos */ 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = DIGI_CMD_IFLUSH_FIFO; 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = priv->dp_port_num; 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[6] = DIGI_FLUSH_TX | DIGI_FLUSH_RX; 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[7] = 0; 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1380c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = digi_write_oob_command(port, buf, 8, 1)) != 0) 1381c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_open: write oob failed, ret=%d", ret); 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set termios settings */ 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds not_termios.c_cflag = ~port->tty->termios->c_cflag; 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds not_termios.c_iflag = ~port->tty->termios->c_iflag; 1386c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_set_termios(port, ¬_termios); 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set DTR and RTS */ 1389c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_set_modem_signals(port, TIOCM_DTR|TIOCM_RTS, 1); 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1391c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1395c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_close(struct usb_serial_port *port, struct file *filp) 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEFINE_WAIT(wait); 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[32]; 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty = port->tty; 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1403c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_close: TOP: port=%d, open_count=%d", 1404c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, port->open_count); 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14060915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum mutex_lock(&port->serial->disc_mutex); 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if disconnected, just clear flags */ 14080915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum if (port->serial->disconnected) 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do cleanup only after final close on this port */ 14120915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum spin_lock_irq(&priv->dp_port_lock); 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_in_close = 1; 14140915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum spin_unlock_irq(&priv->dp_port_lock); 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* tell line discipline to process only XON/XOFF */ 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->closing = 1; 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for output to drain */ 1420c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) 1421c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty_wait_until_sent(tty, DIGI_CLOSE_TIMEOUT); 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* flush driver and line discipline buffers */ 1424c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (tty->driver->flush_buffer) 1425c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty->driver->flush_buffer(tty); 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_ldisc_flush(tty); 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port->serial->dev) { 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for transmit idle */ 1430c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) { 1431c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT); 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* drop DTR and RTS */ 1434c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_set_modem_signals(port, 0, 0); 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable input flow control */ 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_SET_INPUT_FLOW_CONTROL; 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = priv->dp_port_num; 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = DIGI_DISABLE; 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = 0; 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable output flow control */ 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL; 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = priv->dp_port_num; 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[6] = DIGI_DISABLE; 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[7] = 0; 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable reading modem signals automatically */ 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[8] = DIGI_CMD_READ_INPUT_SIGNALS; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[9] = priv->dp_port_num; 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[10] = DIGI_DISABLE; 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[11] = 0; 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable receive */ 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[12] = DIGI_CMD_RECEIVE_ENABLE; 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[13] = priv->dp_port_num; 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[14] = DIGI_DISABLE; 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[15] = 0; 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* flush fifos */ 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[16] = DIGI_CMD_IFLUSH_FIFO; 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[17] = priv->dp_port_num; 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[18] = DIGI_FLUSH_TX | DIGI_FLUSH_RX; 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[19] = 0; 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1466c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = digi_write_oob_command(port, buf, 20, 0)) != 0) 1467c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_close: write oob failed, ret=%d", ret); 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for final commands on oob port to complete */ 147045f23f189ca66d98b1f8b7f3d30a194d3188039dNishanth Aravamudan prepare_to_wait(&priv->dp_flush_wait, &wait, TASK_INTERRUPTIBLE); 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule_timeout(DIGI_CLOSE_TIMEOUT); 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finish_wait(&priv->dp_flush_wait, &wait); 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shutdown any outstanding bulk writes */ 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(port->write_urb); 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->closing = 0; 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 14790915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum spin_lock_irq(&priv->dp_port_lock); 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_in_close = 0; 1482c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_close_wait); 14830915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum spin_unlock_irq(&priv->dp_port_lock); 14840915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum mutex_unlock(&port->serial->disc_mutex); 1485c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_close: done"); 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Startup Device 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Starts reads on all ports. Must be called AFTER startup, with 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* urbs initialized. Returns 0 if successful, non-zero error otherwise. 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1496c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup_device(struct usb_serial *serial) 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i,ret = 0; 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv = usb_get_serial_data(serial); 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port; 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* be sure this happens exactly once */ 1503c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&serial_priv->ds_serial_lock); 1504c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (serial_priv->ds_device_started) { 1505c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&serial_priv->ds_serial_lock); 1506c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_device_started = 1; 1509c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&serial_priv->ds_serial_lock); 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* start reading from each bulk in endpoint for the device */ 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set USB_DISABLE_SPD flag for write bulk urbs */ 1513c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) { 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port = serial->port[i]; 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->dev = port->serial->dev; 1516c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = usb_submit_urb(port->read_urb, GFP_KERNEL)) != 0) { 1517c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox err("%s: usb_submit_urb failed, ret=%d, port=%d", 1518441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, i); 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1522c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1526c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup(struct usb_serial *serial) 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv; 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1533c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_startup: TOP"); 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate the private data structures for all ports */ 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* number of regular ports + 1 for the out-of-band port */ 1537c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for(i = 0; i < serial->type->num_ports + 1; i++) { 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate port private structure */ 1539c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv = kmalloc(sizeof(struct digi_port), GFP_KERNEL); 1540c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv == NULL) { 1541c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while (--i >= 0) 1542c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_port_data(serial->port[i])); 1543c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 1; /* error */ 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize port private structure */ 1547c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_init(&priv->dp_port_lock); 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_port_num = i; 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals = 0; 1552c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_modem_change_wait); 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 0; 1554c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_transmit_idle_wait); 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttled = 0; 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttle_restart = 0; 1557c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_flush_wait); 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_in_close = 0; 1559c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_close_wait); 1560c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells INIT_WORK(&priv->dp_wakeup_work, digi_wakeup_write_lock); 1561c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells priv->dp_port = serial->port[i]; 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize write wait queue for this port */ 1563c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&serial->port[i]->write_wait); 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], priv); 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate serial private structure */ 1569c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox serial_priv = kmalloc(sizeof(struct digi_serial), GFP_KERNEL); 1570c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (serial_priv == NULL) { 1571c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) 1572c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_port_data(serial->port[i])); 1573c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 1; /* error */ 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize serial private structure */ 1577c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_init(&serial_priv->ds_serial_lock); 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_oob_port_num = serial->type->num_ports; 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_oob_port = serial->port[serial_priv->ds_oob_port_num]; 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_device_started = 0; 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_data(serial, serial_priv); 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1583c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1587c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_shutdown(struct usb_serial *serial) 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1590c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_shutdown: TOP, in_interrupt()=%ld", in_interrupt()); 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* stop reads and writes on all ports */ 1593c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) { 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(serial->port[i]->read_urb); 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(serial->port[i]->write_urb); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* free the private data structures for all ports */ 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* number of regular ports + 1 for the out-of-band port */ 1600c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for(i = 0; i < serial->type->num_ports + 1; i++) 1601c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_port_data(serial->port[i])); 1602c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_data(serial)); 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1606c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_read_bulk_callback(struct urb *urb) 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *)urb->context; 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv; 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv; 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 161285d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int status = urb->status; 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1614c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_read_bulk_callback: TOP"); 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port sanity check, do not resubmit if port is not valid */ 1617c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port == NULL || (priv = usb_get_serial_port_data(port)) == NULL) { 161885d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman err("%s: port or port->private is NULL, status=%d", 1619441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, status); 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1622c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->serial == NULL || 1623c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox (serial_priv=usb_get_serial_data(port->serial)) == NULL) { 162485d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman err("%s: serial is bad or serial->private is NULL, status=%d", 1625441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, status); 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do not resubmit urb if it has any status error */ 163085d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman if (status) { 163185d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman err("%s: nonzero read bulk status: status=%d, port=%d", 1632441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, status, priv->dp_port_num); 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle oob or inb callback, do not resubmit if error */ 1637c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_port_num == serial_priv->ds_oob_port_num) { 1638c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (digi_read_oob_callback(urb) != 0) 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1641c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (digi_read_inb_callback(urb) != 0) 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* continue read */ 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->dev = port->serial->dev; 1647c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) != 0) { 1648c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox err("%s: failed resubmitting urb, ret=%d, port=%d", 1649441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Read INB Callback 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Read INB Callback handles reads on the in band ports, sending 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the data on to the tty subsystem. When called we know port and 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* port->private are not NULL and port->serial has been validated. 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* It returns 0 if successful, 1 if successful but the port is 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* throttled, and -1 if the sanity checks failed. 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1664c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_inb_callback(struct urb *urb) 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *)urb->context; 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty = port->tty; 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int opcode = ((unsigned char *)urb->transfer_buffer)[0]; 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len = ((unsigned char *)urb->transfer_buffer)[1]; 167285d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int port_status = ((unsigned char *)urb->transfer_buffer)[2]; 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = ((unsigned char *)urb->transfer_buffer)+3; 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flag,throttled; 167533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox int i; 167685d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int status = urb->status; 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do not process callbacks on closed ports */ 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* but do continue the read chain */ 1680c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->open_count == 0) 1681c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* short/multiple packet check */ 1684c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (urb->actual_length != len + 2) { 1685c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox err("%s: INCOMPLETE OR MULTIPLE PACKET, urb->status=%d, " 168685d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman "port=%d, opcode=%d, len=%d, actual_length=%d, " 1687441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison "status=%d", __func__, status, priv->dp_port_num, 168885d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman opcode, len, urb->actual_length, port_status); 1689c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -1; 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1692c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for throttle; if set, do not resubmit read urb */ 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* indicate the read chain needs to be restarted on unthrottle */ 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds throttled = priv->dp_throttled; 1697c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (throttled) 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttle_restart = 1; 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* receive data */ 1701c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (opcode == DIGI_CMD_RECEIVE_DATA) { 170285d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman /* get flag from port_status */ 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = 0; 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* overrun is special, not associated with a char */ 1706c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port_status & DIGI_OVERRUN_ERROR) 1707c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty_insert_flip_char(tty, 0, TTY_OVERRUN); 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* break takes precedence over parity, */ 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* which takes precedence over framing errors */ 1711c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port_status & DIGI_BREAK_ERROR) 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = TTY_BREAK; 1713c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox else if (port_status & DIGI_PARITY_ERROR) 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = TTY_PARITY; 1715c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox else if (port_status & DIGI_FRAMING_ERROR) 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = TTY_FRAME; 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 171885d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman /* data length is len-1 (one byte of len is port_status) */ 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds --len; 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 172139892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum len = tty_buffer_request_room(tty, len); 1722c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (len > 0) { 172339892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum /* Hot path */ 1724c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (flag == TTY_NORMAL) 172539892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum tty_insert_flip_string(tty, data, len); 172639892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum else { 172739892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum for(i = 0; i < len; i++) 172839892da44b21b5362eb848ca424d73a25ccc488fOliver Neukum tty_insert_flip_char(tty, data[i], flag); 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1730c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty_flip_buffer_push(tty); 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1733c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1735c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (opcode == DIGI_CMD_RECEIVE_DISABLE) 1736441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: got RECEIVE_DISABLE", __func__); 1737c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox else if (opcode != DIGI_CMD_RECEIVE_DATA) 1738441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: unknown opcode: %d", __func__, opcode); 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1740c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return(throttled ? 1 : 0); 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Read OOB Callback 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi Read OOB Callback handles reads on the out of band port. 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* When called we know port and port->private are not NULL and 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the port->serial is valid. It returns 0 if successful, and 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* -1 if the sanity checks failed. 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1754c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_oob_callback(struct urb *urb) 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *)urb->context; 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int opcode, line, status, val; 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1763c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_read_oob_callback: port=%d, len=%d", 1764c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, urb->actual_length); 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle each oob command */ 1767c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for(i = 0; i < urb->actual_length - 3;) { 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds opcode = ((unsigned char *)urb->transfer_buffer)[i++]; 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds line = ((unsigned char *)urb->transfer_buffer)[i++]; 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = ((unsigned char *)urb->transfer_buffer)[i++]; 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = ((unsigned char *)urb->transfer_buffer)[i++]; 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1773c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_read_oob_callback: opcode=%d, line=%d, status=%d, val=%d", 1774c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox opcode, line, status, val); 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1776c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (status != 0 || line >= serial->type->num_ports) 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port = serial->port[line]; 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1781c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((priv=usb_get_serial_port_data(port)) == NULL) 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1784c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (opcode == DIGI_CMD_READ_INPUT_SIGNALS) { 1785c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert from digi flags to termiox flags */ 1787c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_CTS) { 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_CTS; 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port must be open to use tty struct */ 1790c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->open_count 1791c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox && port->tty->termios->c_cflag & CRTSCTS) { 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->tty->hw_stopped = 0; 1793c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_wakeup_write(port); 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_CTS; 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port must be open to use tty struct */ 1798c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->open_count 1799c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox && port->tty->termios->c_cflag & CRTSCTS) { 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->tty->hw_stopped = 1; 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1803c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_DSR) 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_DSR; 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_DSR; 1807c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_RI) 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_RI; 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_RI; 1811c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_DCD) 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_CD; 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_CD; 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1816c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_modem_change_wait); 1817c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 1818c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox } else if (opcode == DIGI_CMD_TRANSMIT_IDLE) { 1819c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 1; 1821c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_transmit_idle_wait); 1822c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 1823c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox } else if (opcode == DIGI_CMD_IFLUSH_FIFO) { 1824c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_flush_wait); 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1827c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1831c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int __init digi_init(void) 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_serial_register(&digi_acceleport_2_device); 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto failed_acceleport_2_device; 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_serial_register(&digi_acceleport_4_device); 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto failed_acceleport_4_device; 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_register(&digi_driver); 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto failed_usb_register; 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info(DRIVER_VERSION ":" DRIVER_DESC); 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfailed_usb_register: 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_serial_deregister(&digi_acceleport_4_device); 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfailed_acceleport_4_device: 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_serial_deregister(&digi_acceleport_2_device); 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfailed_acceleport_2_device: 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit digi_exit (void) 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1855c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox usb_deregister(&digi_driver); 1856c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox usb_serial_deregister(&digi_acceleport_2_device); 1857c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox usb_serial_deregister(&digi_acceleport_4_device); 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(digi_init); 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(digi_exit); 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1865c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan CoxMODULE_AUTHOR(DRIVER_AUTHOR); 1866c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan CoxMODULE_DESCRIPTION(DRIVER_DESC); 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug, bool, S_IRUGO | S_IWUSR); 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC(debug, "Debug enabled or not"); 1871