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-rw-r--r--drivers/char/cyclades.c2311
-rw-r--r--drivers/char/esp.c7
-rw-r--r--drivers/char/hw_random/core.c2
-rw-r--r--drivers/char/isicom.c57
-rw-r--r--drivers/char/mbcs.c5
-rw-r--r--drivers/char/mem.c29
-rw-r--r--drivers/char/misc.c10
-rw-r--r--drivers/char/mxser.c62
-rw-r--r--drivers/char/n_tty.c79
-rw-r--r--drivers/char/pty.c6
-rw-r--r--drivers/char/raw.c4
-rw-r--r--drivers/char/riscom8.c164
-rw-r--r--drivers/char/tty_io.c33
-rw-r--r--drivers/char/tty_ioctl.c4
-rw-r--r--drivers/char/tty_ldisc.c82
-rw-r--r--drivers/char/tty_port.c31
-rw-r--r--drivers/char/vt.c14
-rw-r--r--drivers/char/vt_ioctl.c482
18 files changed, 1339 insertions, 2043 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 2dafc2da064..df5038bbcbc 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -11,7 +11,7 @@
* Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
* Modified and maintained by Marcio Saito <marcio@cyclades.com>.
*
- * Copyright (C) 2007 Jiri Slaby <jirislaby@gmail.com>
+ * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com>
*
* Much of the design and some of the code came from serial.c
* which was copyright (C) 1991, 1992 Linus Torvalds. It was
@@ -19,577 +19,9 @@
* and then fixed as suggested by Michael K. Johnson 12/12/92.
* Converted to pci probing and cleaned up by Jiri Slaby.
*
- * This version supports shared IRQ's (only for PCI boards).
- *
- * Prevent users from opening non-existing Z ports.
- *
- * Revision 2.3.2.8 2000/07/06 18:14:16 ivan
- * Fixed the PCI detection function to work properly on Alpha systems.
- * Implemented support for TIOCSERGETLSR ioctl.
- * Implemented full support for non-standard baud rates.
- *
- * Revision 2.3.2.7 2000/06/01 18:26:34 ivan
- * Request PLX I/O region, although driver doesn't use it, to avoid
- * problems with other drivers accessing it.
- * Removed count for on-board buffer characters in cy_chars_in_buffer
- * (Cyclades-Z only).
- *
- * Revision 2.3.2.6 2000/05/05 13:56:05 ivan
- * Driver now reports physical instead of virtual memory addresses.
- * Masks were added to some Cyclades-Z read accesses.
- * Implemented workaround for PLX9050 bug that would cause a system lockup
- * in certain systems, depending on the MMIO addresses allocated to the
- * board.
- * Changed the Tx interrupt programming in the CD1400 chips to boost up
- * performance (Cyclom-Y only).
- * Code is now compliant with the new module interface (module_[init|exit]).
- * Make use of the PCI helper functions to access PCI resources.
- * Did some code "housekeeping".
- *
- * Revision 2.3.2.5 2000/01/19 14:35:33 ivan
- * Fixed bug in cy_set_termios on CRTSCTS flag turnoff.
- *
- * Revision 2.3.2.4 2000/01/17 09:19:40 ivan
- * Fixed SMP locking in Cyclom-Y interrupt handler.
- *
- * Revision 2.3.2.3 1999/12/28 12:11:39 ivan
- * Added a new cyclades_card field called nports to allow the driver to
- * know the exact number of ports found by the Z firmware after its load;
- * RX buffer contention prevention logic on interrupt op mode revisited
- * (Cyclades-Z only);
- * Revisited printk's for Z debug;
- * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined;
- *
- * Revision 2.3.2.2 1999/10/01 11:27:43 ivan
- * Fixed bug in cyz_poll that would make all ports but port 0
- * unable to transmit/receive data (Cyclades-Z only);
- * Implemented logic to prevent the RX buffer from being stuck with data
- * due to a driver / firmware race condition in interrupt op mode
- * (Cyclades-Z only);
- * Fixed bug in block_til_ready logic that would lead to a system crash;
- * Revisited cy_close spinlock usage;
- *
- * Revision 2.3.2.1 1999/09/28 11:01:22 ivan
- * Revisited CONFIG_PCI conditional compilation for PCI board support;
- * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support;
- * _Major_ cleanup on the Cyclades-Z interrupt support code / logic;
- * Removed CTS handling from the driver -- this is now completely handled
- * by the firmware (Cyclades-Z only);
- * Flush RX on-board buffers on a port open (Cyclades-Z only);
- * Fixed handling of ASYNC_SPD_* TTY flags;
- * Module unload now unmaps all memory area allocated by ioremap;
- *
- * Revision 2.3.1.1 1999/07/15 16:45:53 ivan
- * Removed CY_PROC conditional compilation;
- * Implemented SMP-awareness for the driver;
- * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off]
- * functions;
- * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs
- * (irq=NN) as parameters (only for ISA boards);
- * Fixed bug in set_line_char that would prevent the Cyclades-Z
- * ports from being configured at speeds above 115.2Kbps;
- * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control
- * switching from working properly;
- * The driver now only prints IRQ info for the Cyclades-Z if it's
- * configured to work in interrupt mode;
- *
- * Revision 2.2.2.3 1999/06/28 11:13:29 ivan
- * Added support for interrupt mode operation for the Z cards;
- * Removed the driver inactivity control for the Z;
- * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when
- * the Z firmware is not loaded yet;
- * Replaced the "manual" Z Tx flush buffer by a call to a FW command of
- * same functionality;
- * Implemented workaround for IRQ setting loss on the PCI configuration
- * registers after a PCI bridge EEPROM reload (affects PLX9060 only);
- *
- * Revision 2.2.2.2 1999/05/14 17:18:15 ivan
- * /proc entry location changed to /proc/tty/driver/cyclades;
- * Added support to shared IRQ's (only for PCI boards);
- * Added support for Cobalt Qube2 systems;
- * IRQ [de]allocation scheme revisited;
- * BREAK implementation changed in order to make use of the 'break_ctl'
- * TTY facility;
- * Fixed typo in TTY structure field 'driver_name';
- * Included a PCI bridge reset and EEPROM reload in the board
- * initialization code (for both Y and Z series).
- *
- * Revision 2.2.2.1 1999/04/08 16:17:43 ivan
- * Fixed a bug in cy_wait_until_sent that was preventing the port to be
- * closed properly after a SIGINT;
- * Module usage counter scheme revisited;
- * Added support to the upcoming Y PCI boards (i.e., support to additional
- * PCI Device ID's).
- *
- * Revision 2.2.1.10 1999/01/20 16:14:29 ivan
- * Removed all unnecessary page-alignement operations in ioremap calls
- * (ioremap is currently safe for these operations).
- *
- * Revision 2.2.1.9 1998/12/30 18:18:30 ivan
- * Changed access to PLX PCI bridge registers from I/O to MMIO, in
- * order to make PLX9050-based boards work with certain motherboards.
- *
- * Revision 2.2.1.8 1998/11/13 12:46:20 ivan
- * cy_close function now resets (correctly) the tty->closing flag;
- * JIFFIES_DIFF macro fixed.
- *
- * Revision 2.2.1.7 1998/09/03 12:07:28 ivan
- * Fixed bug in cy_close function, which was not informing HW of
- * which port should have the reception disabled before doing so;
- * fixed Cyclom-8YoP hardware detection bug.
- *
- * Revision 2.2.1.6 1998/08/20 17:15:39 ivan
- * Fixed bug in cy_close function, which causes malfunction
- * of one of the first 4 ports when a higher port is closed
- * (Cyclom-Y only).
- *
- * Revision 2.2.1.5 1998/08/10 18:10:28 ivan
- * Fixed Cyclom-4Yo hardware detection bug.
- *
- * Revision 2.2.1.4 1998/08/04 11:02:50 ivan
- * /proc/cyclades implementation with great collaboration of
- * Marc Lewis <marc@blarg.net>;
- * cyy_interrupt was changed to avoid occurrence of kernel oopses
- * during PPP operation.
- *
- * Revision 2.2.1.3 1998/06/01 12:09:10 ivan
- * General code review in order to comply with 2.1 kernel standards;
- * data loss prevention for slow devices revisited (cy_wait_until_sent
- * was created);
- * removed conditional compilation for new/old PCI structure support
- * (now the driver only supports the new PCI structure).
- *
- * Revision 2.2.1.1 1998/03/19 16:43:12 ivan
- * added conditional compilation for new/old PCI structure support;
- * removed kernel series (2.0.x / 2.1.x) conditional compilation.
- *
- * Revision 2.1.1.3 1998/03/16 18:01:12 ivan
- * cleaned up the data loss fix;
- * fixed XON/XOFF handling once more (Cyclades-Z);
- * general review of the driver routines;
- * introduction of a mechanism to prevent data loss with slow
- * printers, by forcing a delay before closing the port.
- *
- * Revision 2.1.1.2 1998/02/17 16:50:00 ivan
- * fixed detection/handling of new CD1400 in Ye boards;
- * fixed XON/XOFF handling (Cyclades-Z);
- * fixed data loss caused by a premature port close;
- * introduction of a flag that holds the CD1400 version ID per port
- * (used by the CYGETCD1400VER new ioctl).
- *
- * Revision 2.1.1.1 1997/12/03 17:31:19 ivan
- * Code review for the module cleanup routine;
- * fixed RTS and DTR status report for new CD1400's in get_modem_info;
- * includes anonymous changes regarding signal_pending.
- *
- * Revision 2.1 1997/11/01 17:42:41 ivan
- * Changes in the driver to support Alpha systems (except 8Zo V_1);
- * BREAK fix for the Cyclades-Z boards;
- * driver inactivity control by FW implemented;
- * introduction of flag that allows driver to take advantage of
- * a special CD1400 feature related to HW flow control;
- * added support for the CD1400 rev. J (Cyclom-Y boards);
- * introduction of ioctls to:
- * - control the rtsdtr_inv flag (Cyclom-Y);
- * - control the rflow flag (Cyclom-Y);
- * - adjust the polling interval (Cyclades-Z);
- *
- * Revision 1.36.4.33 1997/06/27 19:00:00 ivan
- * Fixes related to kernel version conditional
- * compilation.
- *
- * Revision 1.36.4.32 1997/06/14 19:30:00 ivan
- * Compatibility issues between kernels 2.0.x and
- * 2.1.x (mainly related to clear_bit function).
- *
- * Revision 1.36.4.31 1997/06/03 15:30:00 ivan
- * Changes to define the memory window according to the
- * board type.
- *
- * Revision 1.36.4.30 1997/05/16 15:30:00 daniel
- * Changes to support new cycladesZ boards.
- *
- * Revision 1.36.4.29 1997/05/12 11:30:00 daniel
- * Merge of Bentson's and Daniel's version 1.36.4.28.
- * Corrects bug in cy_detect_pci: check if there are more
- * ports than the number of static structs allocated.
- * Warning message during initialization if this driver is
- * used with the new generation of cycladesZ boards. Those
- * will be supported only in next release of the driver.
- * Corrects bug in cy_detect_pci and cy_detect_isa that
- * returned wrong number of VALID boards, when a cyclomY
- * was found with no serial modules connected.
- * Changes to use current (2.1.x) kernel subroutine names
- * and created macros for compilation with 2.0.x kernel,
- * instead of the other way around.
- *
- * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson
- * Change queue_task_irq_off to queue_task_irq.
- * The inline function queue_task_irq_off (tqueue.h)
- * was removed from latest releases of 2.1.x kernel.
- * Use of macro __init to mark the initialization
- * routines, so memory can be reused.
- * Also incorporate implementation of critical region
- * in function cleanup_module() created by anonymous
- * linuxer.
- *
- * Revision 1.36.4.28 1997/04/25 16:00:00 daniel
- * Change to support new firmware that solves DCD problem:
- * application could fail to receive SIGHUP signal when DCD
- * varying too fast.
- *
- * Revision 1.36.4.27 1997/03/26 10:30:00 daniel
- * Changed for support linux versions 2.1.X.
- * Backward compatible with linux versions 2.0.X.
- * Corrected illegal use of filler field in
- * CH_CTRL struct.
- * Deleted some debug messages.
- *
- * Revision 1.36.4.26 1997/02/27 12:00:00 daniel
- * Included check for NULL tty pointer in cyz_poll.
- *
- * Revision 1.36.4.25 1997/02/26 16:28:30 bentson
- * Bill Foster at Blarg! Online services noticed that
- * some of the switch elements of -Z modem control
- * lacked a closing "break;"
- *
- * Revision 1.36.4.24 1997/02/24 11:00:00 daniel
- * Changed low water threshold for buffer xmit_buf
- *
- * Revision 1.36.4.23 1996/12/02 21:50:16 bentson
- * Marcio provided fix to modem status fetch for -Z
- *
- * Revision 1.36.4.22 1996/10/28 22:41:17 bentson
- * improve mapping of -Z control page (thanks to Steve
- * Price <stevep@fa.tdktca.com> for help on this)
- *
- * Revision 1.36.4.21 1996/09/10 17:00:10 bentson
- * shift from CPU-bound to memcopy in cyz_polling operation
- *
- * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson
- * Added support to set and report higher speeds.
- *
- * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito
- * Some fixes in the HW flow control for the BETA release.
- * Don't try to register the IRQ.
- *
- * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson
- * make sure "cyc" appears in all kernel messages; all soft interrupts
- * handled by same routine; recognize out-of-band reception; comment
- * out some diagnostic messages; leave RTS/CTS flow control to hardware;
- * fix race condition in -Z buffer management; only -Y needs to explicitly
- * flush chars; tidy up some startup messages;
- *
- * Revision 1.36.4.18 1996/07/25 18:57:31 bentson
- * shift MOD_INC_USE_COUNT location to match
- * serial.c; purge some diagnostic messages;
- *
- * Revision 1.36.4.17 1996/07/25 18:01:08 bentson
- * enable modem status messages and fetch & process them; note
- * time of last activity type for each port; set_line_char now
- * supports more than line 0 and treats 0 baud correctly;
- * get_modem_info senses rs_status;
- *
- * Revision 1.36.4.16 1996/07/20 08:43:15 bentson
- * barely works--now's time to turn on
- * more features 'til it breaks
- *
- * Revision 1.36.4.15 1996/07/19 22:30:06 bentson
- * check more -Z board status; shorten boot message
- *
- * Revision 1.36.4.14 1996/07/19 22:20:37 bentson
- * fix reference to ch_ctrl in startup; verify return
- * values from cyz_issue_cmd and cyz_update_channel;
- * more stuff to get modem control correct;
- *
- * Revision 1.36.4.13 1996/07/11 19:53:33 bentson
- * more -Z stuff folded in; re-order changes to put -Z stuff
- * after -Y stuff (to make changes clearer)
- *
- * Revision 1.36.4.12 1996/07/11 15:40:55 bentson
- * Add code to poll Cyclades-Z. Add code to get & set RS-232 control.
- * Add code to send break. Clear firmware ID word at startup (so
- * that other code won't talk to inactive board).
- *
- * Revision 1.36.4.11 1996/07/09 05:28:29 bentson
- * add code for -Z in set_line_char
- *
- * Revision 1.36.4.10 1996/07/08 19:28:37 bentson
- * fold more -Z stuff (or in some cases, error messages)
- * into driver; add text to "don't know what to do" messages.
- *
- * Revision 1.36.4.9 1996/07/08 18:38:38 bentson
- * moved compile-time flags near top of file; cosmetic changes
- * to narrow text (to allow 2-up printing); changed many declarations
- * to "static" to limit external symbols; shuffled code order to
- * coalesce -Y and -Z specific code, also to put internal functions
- * in order of tty_driver structure; added code to recognize -Z
- * ports (and for moment, do nothing or report error); add cy_startup
- * to parse boot command line for extra base addresses for ISA probes;
- *
- * Revision 1.36.4.8 1996/06/25 17:40:19 bentson
- * reorder some code, fix types of some vars (int vs. long),
- * add cy_setup to support user declared ISA addresses
- *
- * Revision 1.36.4.7 1996/06/21 23:06:18 bentson
- * dump ioctl based firmware load (it's now a user level
- * program); ensure uninitialzed ports cannot be used
- *
- * Revision 1.36.4.6 1996/06/20 23:17:19 bentson
- * rename vars and restructure some code
- *
- * Revision 1.36.4.5 1996/06/14 15:09:44 bentson
- * get right status back after boot load
- *
- * Revision 1.36.4.4 1996/06/13 19:51:44 bentson
- * successfully loads firmware
- *
- * Revision 1.36.4.3 1996/06/13 06:08:33 bentson
- * add more of the code for the boot/load ioctls
- *
- * Revision 1.36.4.2 1996/06/11 21:00:51 bentson
- * start to add Z functionality--starting with ioctl
- * for loading firmware
- *
- * Revision 1.36.4.1 1996/06/10 18:03:02 bentson
- * added code to recognize Z/PCI card at initialization; report
- * presence, but card is not initialized (because firmware needs
- * to be loaded)
- *
- * Revision 1.36.3.8 1996/06/07 16:29:00 bentson
- * starting minor number at zero; added missing verify_area
- * as noted by Heiko Eißfeldt <heiko@colossus.escape.de>
- *
- * Revision 1.36.3.7 1996/04/19 21:06:18 bentson
- * remove unneeded boot message & fix CLOCAL hardware flow
- * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>);
- * remove unused diagnostic statements; minor 0 is first;
- *
- * Revision 1.36.3.6 1996/03/13 13:21:17 marcio
- * The kernel function vremap (available only in later 1.3.xx kernels)
- * allows the access to memory addresses above the RAM. This revision
- * of the driver supports PCI boards below 1Mb (device id 0x100) and
- * above 1Mb (device id 0x101).
- *
- * Revision 1.36.3.5 1996/03/07 15:20:17 bentson
- * Some global changes to interrupt handling spilled into
- * this driver--mostly unused arguments in system function
- * calls. Also added change by Marcio Saito which should
- * reduce lost interrupts at startup by fast processors.
- *
- * Revision 1.36.3.4 1995/11/13 20:45:10 bentson
- * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed
- * in 1.3.41 kernel to remove a possible race condition, extend
- * some error messages, and let the driver run as a loadable module
- * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a
- * possible race condition.
- * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing.
- *
- * Revision 1.36.3.3 1995/11/13 19:44:48 bentson
- * Changes by Linus Torvalds in 1.3.33 kernel distribution
- * required due to reordering of driver initialization.
- * Drivers are now initialized *after* memory management.
- *
- * Revision 1.36.3.2 1995/09/08 22:07:14 bentson
- * remove printk from ISR; fix typo
- *
- * Revision 1.36.3.1 1995/09/01 12:00:42 marcio
- * Minor fixes in the PCI board support. PCI function calls in
- * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan
- * <duncan@okay.com>. "bad serial count" message removed.
- *
- * Revision 1.36.3 1995/08/22 09:19:42 marcio
- * Cyclom-Y/PCI support added. Changes in the cy_init routine and
- * board initialization. Changes in the boot messages. The driver
- * supports up to 4 boards and 64 ports by default.
- *
- * Revision 1.36.1.4 1995/03/29 06:14:14 bentson
- * disambiguate between Cyclom-16Y and Cyclom-32Ye;
- *
- * Revision 1.36.1.3 1995/03/23 22:15:35 bentson
- * add missing break in modem control block in ioctl switch statement
- * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>);
- *
- * Revision 1.36.1.2 1995/03/22 19:16:22 bentson
- * make sure CTS flow control is set as soon as possible (thanks
- * to note from David Lambert <lambert@chesapeake.rps.slb.com>);
- *
- * Revision 1.36.1.1 1995/03/13 15:44:43 bentson
- * initialize defaults for receive threshold and stale data timeout;
- * cosmetic changes;
- *
- * Revision 1.36 1995/03/10 23:33:53 bentson
- * added support of chips 4-7 in 32 port Cyclom-Ye;
- * fix cy_interrupt pointer dereference problem
- * (Joe Portman <baron@aa.net>);
- * give better error response if open is attempted on non-existent port
- * (Zachariah Vaum <jchryslr@netcom.com>);
- * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>);
- * conditional compilation for -16Y on systems with fast, noisy bus;
- * comment out diagnostic print function;
- * cleaned up table of base addresses;
- * set receiver time-out period register to correct value,
- * set receive threshold to better default values,
- * set chip timer to more accurate 200 Hz ticking,
- * add code to monitor and modify receive parameters
- * (Rik Faith <faith@cs.unc.edu> Nick Simicich
- * <njs@scifi.emi.net>);
- *
- * Revision 1.35 1994/12/16 13:54:18 steffen
- * additional patch by Marcio Saito for board detection
- * Accidently left out in 1.34
- *
- * Revision 1.34 1994/12/10 12:37:12 steffen
- * This is the corrected version as suggested by Marcio Saito
- *
- * Revision 1.33 1994/12/01 22:41:18 bentson
- * add hooks to support more high speeds directly; add tytso
- * patch regarding CLOCAL wakeups
- *
- * Revision 1.32 1994/11/23 19:50:04 bentson
- * allow direct kernel control of higher signalling rates;
- * look for cards at additional locations
- *
- * Revision 1.31 1994/11/16 04:33:28 bentson
- * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com--
- * a problem in chars_in_buffer has been resolved by some
- * small changes; this should yield smoother output
- *
- * Revision 1.30 1994/11/16 04:28:05 bentson
- * Fix from Corey Minyard, Internet: minyard@metronet.com,
- * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to
- * cy_hangup that appears to clear up much (all?) of the
- * DTR glitches; also he's added/cleaned-up diagnostic messages
- *
- * Revision 1.29 1994/11/16 04:16:07 bentson
- * add change proposed by Ralph Sims, ralphs@halcyon.com, to
- * operate higher speeds in same way as other serial ports;
- * add more serial ports (for up to two 16-port muxes).
- *
- * Revision 1.28 1994/11/04 00:13:16 root
- * turn off diagnostic messages
- *
- * Revision 1.27 1994/11/03 23:46:37 root
- * bunch of changes to bring driver into greater conformance
- * with the serial.c driver (looking for missed fixes)
- *
- * Revision 1.26 1994/11/03 22:40:36 root
- * automatic interrupt probing fixed.
- *
- * Revision 1.25 1994/11/03 20:17:02 root
- * start to implement auto-irq
- *
- * Revision 1.24 1994/11/03 18:01:55 root
- * still working on modem signals--trying not to drop DTR
- * during the getty/login processes
- *
- * Revision 1.23 1994/11/03 17:51:36 root
- * extend baud rate support; set receive threshold as function
- * of baud rate; fix some problems with RTS/CTS;
- *
- * Revision 1.22 1994/11/02 18:05:35 root
- * changed arguments to udelay to type long to get
- * delays to be of correct duration
- *
- * Revision 1.21 1994/11/02 17:37:30 root
- * employ udelay (after calibrating loops_per_second earlier
- * in init/main.c) instead of using home-grown delay routines
- *
- * Revision 1.20 1994/11/02 03:11:38 root
- * cy_chars_in_buffer forces a return value of 0 to let
- * login work (don't know why it does); some functions
- * that were returning EFAULT, now executes the code;
- * more work on deciding when to disable xmit interrupts;
- *
- * Revision 1.19 1994/11/01 20:10:14 root
- * define routine to start transmission interrupts (by enabling
- * transmit interrupts); directly enable/disable modem interrupts;
- *
- * Revision 1.18 1994/11/01 18:40:45 bentson
- * Don't always enable transmit interrupts in startup; interrupt on
- * TxMpty instead of TxRdy to help characters get out before shutdown;
- * restructure xmit interrupt to check for chars first and quit if
- * none are ready to go; modem status (MXVRx) is upright, _not_ inverted
- * (to my view);
- *
- * Revision 1.17 1994/10/30 04:39:45 bentson
- * rename serial_driver and callout_driver to cy_serial_driver and
- * cy_callout_driver to avoid linkage interference; initialize
- * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port
- * from cyclades_port structure; add paranoia check to cy_close;
- *
- * Revision 1.16 1994/10/30 01:14:33 bentson
- * change major numbers; add some _early_ return statements;
- *
- * Revision 1.15 1994/10/29 06:43:15 bentson
- * final tidying up for clean compile; enable some error reporting
- *
- * Revision 1.14 1994/10/28 20:30:22 Bentson
- * lots of changes to drag the driver towards the new tty_io
- * structures and operation. not expected to work, but may
- * compile cleanly.
- *
- * Revision 1.13 1994/07/21 23:08:57 Bentson
- * add some diagnostic cruft; support 24 lines (for testing
- * both -8Y and -16Y cards; be more thorough in servicing all
- * chips during interrupt; add "volatile" a few places to
- * circumvent compiler optimizations; fix base & offset
- * computations in block_til_ready (was causing chip 0 to
- * stop operation)
- *
- * Revision 1.12 1994/07/19 16:42:11 Bentson
- * add some hackery for kernel version 1.1.8; expand
- * error messages; refine timing for delay loops and
- * declare loop params volatile
- *
- * Revision 1.11 1994/06/11 21:53:10 bentson
- * get use of save_car right in transmit interrupt service
- *
- * Revision 1.10.1.1 1994/06/11 21:31:18 bentson
- * add some diagnostic printing; try to fix save_car stuff
- *
- * Revision 1.10 1994/06/11 20:36:08 bentson
- * clean up compiler warnings
- *
- * Revision 1.9 1994/06/11 19:42:46 bentson
- * added a bunch of code to support modem signalling
- *
- * Revision 1.8 1994/06/11 17:57:07 bentson
- * recognize break & parity error
- *
- * Revision 1.7 1994/06/05 05:51:34 bentson
- * Reorder baud table to be monotonic; add cli to CP; discard
- * incoming characters and status if the line isn't open; start to
- * fold code into cy_throttle; start to port get_serial_info,
- * set_serial_info, get_modem_info, set_modem_info, and send_break
- * from serial.c; expand cy_ioctl; relocate and expand config_setup;
- * get flow control characters from tty struct; invalidate ports w/o
- * hardware;
- *
- * Revision 1.6 1994/05/31 18:42:21 bentson
- * add a loop-breaker in the interrupt service routine;
- * note when port is initialized so that it can be shut
- * down under the right conditions; receive works without
- * any obvious errors
- *
- * Revision 1.5 1994/05/30 00:55:02 bentson
- * transmit works without obvious errors
- *
- * Revision 1.4 1994/05/27 18:46:27 bentson
- * incorporated more code from lib_y.c; can now print short
- * strings under interrupt control to port zero; seems to
- * select ports/channels/lines correctly
- *
- * Revision 1.3 1994/05/25 22:12:44 bentson
- * shifting from multi-port on a card to proper multiplexor
- * data structures; added skeletons of most routines
- *
- * Revision 1.2 1994/05/19 13:21:43 bentson
- * start to crib from other sources
- *
*/
-#define CY_VERSION "2.5"
+#define CY_VERSION "2.6"
/* If you need to install more boards than NR_CARDS, change the constant
in the definition below. No other change is necessary to support up to
@@ -648,9 +80,7 @@
#include <linux/firmware.h>
#include <linux/device.h>
-#include <asm/system.h>
#include <linux/io.h>
-#include <asm/irq.h>
#include <linux/uaccess.h>
#include <linux/kernel.h>
@@ -660,13 +90,11 @@
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
-static void cy_throttle(struct tty_struct *tty);
static void cy_send_xchar(struct tty_struct *tty, char ch);
#ifndef SERIAL_XMIT_SIZE
#define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096))
#endif
-#define WAKEUP_CHARS 256
#define STD_COM_FLAGS (0)
@@ -756,25 +184,25 @@ static int cy_next_channel; /* next minor available */
* HI VHI
* 20
*/
-static int baud_table[] = {
+static const int baud_table[] = {
0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
230400, 0
};
-static char baud_co_25[] = { /* 25 MHz clock option table */
+static const char baud_co_25[] = { /* 25 MHz clock option table */
/* value => 00 01 02 03 04 */
/* divide by 8 32 128 512 2048 */
0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
-static char baud_bpr_25[] = { /* 25 MHz baud rate period table */
+static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */
0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15
};
-static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
+static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
/* value => 00 01 02 03 04 */
/* divide by 8 32 128 512 2048 */
0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
@@ -782,13 +210,13 @@ static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
0x00
};
-static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */
+static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */
0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
0x21
};
-static char baud_cor3[] = { /* receive threshold */
+static const char baud_cor3[] = { /* receive threshold */
0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
0x07
@@ -805,7 +233,7 @@ static char baud_cor3[] = { /* receive threshold */
* cables.
*/
-static char rflow_thr[] = { /* rflow threshold */
+static const char rflow_thr[] = { /* rflow threshold */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
0x0a
@@ -814,7 +242,7 @@ static char rflow_thr[] = { /* rflow threshold */
/* The Cyclom-Ye has placed the sequential chips in non-sequential
* address order. This look-up table overcomes that problem.
*/
-static int cy_chip_offset[] = { 0x0000,
+static const unsigned int cy_chip_offset[] = { 0x0000,
0x0400,
0x0800,
0x0C00,
@@ -827,7 +255,7 @@ static int cy_chip_offset[] = { 0x0000,
/* PCI related definitions */
#ifdef CONFIG_PCI
-static struct pci_device_id cy_pci_dev_id[] __devinitdata = {
+static const struct pci_device_id cy_pci_dev_id[] = {
/* PCI < 1Mb */
{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) },
/* PCI > 1Mb */
@@ -850,7 +278,7 @@ MODULE_DEVICE_TABLE(pci, cy_pci_dev_id);
#endif
static void cy_start(struct tty_struct *);
-static void set_line_char(struct cyclades_port *);
+static void cy_set_line_char(struct cyclades_port *, struct tty_struct *);
static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32);
#ifdef CONFIG_ISA
static unsigned detect_isa_irq(void __iomem *);
@@ -869,6 +297,20 @@ static void cyz_rx_restart(unsigned long);
static struct timer_list cyz_rx_full_timer[NR_PORTS];
#endif /* CONFIG_CYZ_INTR */
+static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
+{
+ struct cyclades_card *card = port->card;
+
+ cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
+}
+
+static inline u8 cyy_readb(struct cyclades_port *port, u32 reg)
+{
+ struct cyclades_card *card = port->card;
+
+ return readb(port->u.cyy.base_addr + (reg << card->bus_index));
+}
+
static inline bool cy_is_Z(struct cyclades_card *card)
{
return card->num_chips == (unsigned int)-1;
@@ -893,7 +335,7 @@ static inline bool cyz_is_loaded(struct cyclades_card *card)
}
static inline int serial_paranoia_check(struct cyclades_port *info,
- char *name, const char *routine)
+ const char *name, const char *routine)
{
#ifdef SERIAL_PARANOIA_CHECK
if (!info) {
@@ -909,7 +351,7 @@ static inline int serial_paranoia_check(struct cyclades_port *info,
}
#endif
return 0;
-} /* serial_paranoia_check */
+}
/***********************************************************/
/********* Start of block of Cyclom-Y specific code ********/
@@ -921,13 +363,14 @@ static inline int serial_paranoia_check(struct cyclades_port *info,
This function is only called from inside spinlock-protected code.
*/
-static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index)
+static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index)
{
+ void __iomem *ccr = base_addr + (CyCCR << index);
unsigned int i;
/* Check to see that the previous command has completed */
for (i = 0; i < 100; i++) {
- if (readb(base_addr + (CyCCR << index)) == 0)
+ if (readb(ccr) == 0)
break;
udelay(10L);
}
@@ -937,10 +380,16 @@ static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index)
return -1;
/* Issue the new command */
- cy_writeb(base_addr + (CyCCR << index), cmd);
+ cy_writeb(ccr, cmd);
return 0;
-} /* cyy_issue_cmd */
+}
+
+static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd)
+{
+ return __cyy_issue_cmd(port->u.cyy.base_addr, cmd,
+ port->card->bus_index);
+}
#ifdef CONFIG_ISA
/* ISA interrupt detection code */
@@ -960,12 +409,12 @@ static unsigned detect_isa_irq(void __iomem *address)
irqs = probe_irq_on();
/* Wait ... */
- udelay(5000L);
+ msleep(5);
/* Enable the Tx interrupts on the CD1400 */
local_irq_save(flags);
cy_writeb(address + (CyCAR << index), 0);
- cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index);
+ __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index);
cy_writeb(address + (CyCAR << index), 0);
cy_writeb(address + (CySRER << index),
@@ -973,7 +422,7 @@ static unsigned detect_isa_irq(void __iomem *address)
local_irq_restore(flags);
/* Wait ... */
- udelay(5000L);
+ msleep(5);
/* Check which interrupt is in use */
irq = probe_irq_off(irqs);
@@ -999,7 +448,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
struct cyclades_port *info;
struct tty_struct *tty;
int len, index = cinfo->bus_index;
- u8 save_xir, channel, save_car, data, char_count;
+ u8 ivr, save_xir, channel, save_car, data, char_count;
#ifdef CY_DEBUG_INTERRUPTS
printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip);
@@ -1008,26 +457,25 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
save_xir = readb(base_addr + (CyRIR << index));
channel = save_xir & CyIRChannel;
info = &cinfo->ports[channel + chip * 4];
- save_car = readb(base_addr + (CyCAR << index));
- cy_writeb(base_addr + (CyCAR << index), save_xir);
+ save_car = cyy_readb(info, CyCAR);
+ cyy_writeb(info, CyCAR, save_xir);
+ ivr = cyy_readb(info, CyRIVR) & CyIVRMask;
+ tty = tty_port_tty_get(&info->port);
/* if there is nowhere to put the data, discard it */
- if (info->port.tty == NULL) {
- if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) ==
- CyIVRRxEx) { /* exception */
- data = readb(base_addr + (CyRDSR << index));
+ if (tty == NULL) {
+ if (ivr == CyIVRRxEx) { /* exception */
+ data = cyy_readb(info, CyRDSR);
} else { /* normal character reception */
- char_count = readb(base_addr + (CyRDCR << index));
+ char_count = cyy_readb(info, CyRDCR);
while (char_count--)
- data = readb(base_addr + (CyRDSR << index));
+ data = cyy_readb(info, CyRDSR);
}
goto end;
}
/* there is an open port for this data */
- tty = info->port.tty;
- if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) ==
- CyIVRRxEx) { /* exception */
- data = readb(base_addr + (CyRDSR << index));
+ if (ivr == CyIVRRxEx) { /* exception */
+ data = cyy_readb(info, CyRDSR);
/* For statistics only */
if (data & CyBREAK)
@@ -1041,28 +489,29 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
if (data & info->ignore_status_mask) {
info->icount.rx++;
+ tty_kref_put(tty);
return;
}
if (tty_buffer_request_room(tty, 1)) {
if (data & info->read_status_mask) {
if (data & CyBREAK) {
tty_insert_flip_char(tty,
- readb(base_addr + (CyRDSR <<
- index)), TTY_BREAK);
+ cyy_readb(info, CyRDSR),
+ TTY_BREAK);
info->icount.rx++;
if (info->port.flags & ASYNC_SAK)
do_SAK(tty);
} else if (data & CyFRAME) {
tty_insert_flip_char(tty,
- readb(base_addr + (CyRDSR <<
- index)), TTY_FRAME);
+ cyy_readb(info, CyRDSR),
+ TTY_FRAME);
info->icount.rx++;
info->idle_stats.frame_errs++;
} else if (data & CyPARITY) {
/* Pieces of seven... */
tty_insert_flip_char(tty,
- readb(base_addr + (CyRDSR <<
- index)), TTY_PARITY);
+ cyy_readb(info, CyRDSR),
+ TTY_PARITY);
info->icount.rx++;
info->idle_stats.parity_errs++;
} else if (data & CyOVERRUN) {
@@ -1074,8 +523,8 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
the next incoming character.
*/
tty_insert_flip_char(tty,
- readb(base_addr + (CyRDSR <<
- index)), TTY_FRAME);
+ cyy_readb(info, CyRDSR),
+ TTY_FRAME);
info->icount.rx++;
info->idle_stats.overruns++;
/* These two conditions may imply */
@@ -1099,7 +548,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
}
} else { /* normal character reception */
/* load # chars available from the chip */
- char_count = readb(base_addr + (CyRDCR << index));
+ char_count = cyy_readb(info, CyRDCR);
#ifdef CY_ENABLE_MONITORING
++info->mon.int_count;
@@ -1110,7 +559,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
#endif
len = tty_buffer_request_room(tty, char_count);
while (len--) {
- data = readb(base_addr + (CyRDSR << index));
+ data = cyy_readb(info, CyRDSR);
tty_insert_flip_char(tty, data, TTY_NORMAL);
info->idle_stats.recv_bytes++;
info->icount.rx++;
@@ -1121,16 +570,18 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
info->idle_stats.recv_idle = jiffies;
}
tty_schedule_flip(tty);
+ tty_kref_put(tty);
end:
/* end of service */
- cy_writeb(base_addr + (CyRIR << index), save_xir & 0x3f);
- cy_writeb(base_addr + (CyCAR << index), save_car);
+ cyy_writeb(info, CyRIR, save_xir & 0x3f);
+ cyy_writeb(info, CyCAR, save_car);
}
static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
void __iomem *base_addr)
{
struct cyclades_port *info;
+ struct tty_struct *tty;
int char_count, index = cinfo->bus_index;
u8 save_xir, channel, save_car, outch;
@@ -1154,9 +605,9 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
goto end;
}
info = &cinfo->ports[channel + chip * 4];
- if (info->port.tty == NULL) {
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) & ~CyTxRdy);
+ tty = tty_port_tty_get(&info->port);
+ if (tty == NULL) {
+ cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
goto end;
}
@@ -1165,7 +616,7 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
if (info->x_char) { /* send special char */
outch = info->x_char;
- cy_writeb(base_addr + (CyTDR << index), outch);
+ cyy_writeb(info, CyTDR, outch);
char_count--;
info->icount.tx++;
info->x_char = 0;
@@ -1173,14 +624,14 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
if (info->breakon || info->breakoff) {
if (info->breakon) {
- cy_writeb(base_addr + (CyTDR << index), 0);
- cy_writeb(base_addr + (CyTDR << index), 0x81);
+ cyy_writeb(info, CyTDR, 0);
+ cyy_writeb(info, CyTDR, 0x81);
info->breakon = 0;
char_count -= 2;
}
if (info->breakoff) {
- cy_writeb(base_addr + (CyTDR << index), 0);
- cy_writeb(base_addr + (CyTDR << index), 0x83);
+ cyy_writeb(info, CyTDR, 0);
+ cyy_writeb(info, CyTDR, 0x83);
info->breakoff = 0;
char_count -= 2;
}
@@ -1188,27 +639,23 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
while (char_count-- > 0) {
if (!info->xmit_cnt) {
- if (readb(base_addr + (CySRER << index)) & CyTxMpty) {
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) &
- ~CyTxMpty);
+ if (cyy_readb(info, CySRER) & CyTxMpty) {
+ cyy_writeb(info, CySRER,
+ cyy_readb(info, CySRER) & ~CyTxMpty);
} else {
- cy_writeb(base_addr + (CySRER << index),
- (readb(base_addr + (CySRER << index)) &
- ~CyTxRdy) | CyTxMpty);
+ cyy_writeb(info, CySRER, CyTxMpty |
+ (cyy_readb(info, CySRER) & ~CyTxRdy));
}
goto done;
}
if (info->port.xmit_buf == NULL) {
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) &
- ~CyTxRdy);
+ cyy_writeb(info, CySRER,
+ cyy_readb(info, CySRER) & ~CyTxRdy);
goto done;
}
- if (info->port.tty->stopped || info->port.tty->hw_stopped) {
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) &
- ~CyTxRdy);
+ if (tty->stopped || tty->hw_stopped) {
+ cyy_writeb(info, CySRER,
+ cyy_readb(info, CySRER) & ~CyTxRdy);
goto done;
}
/* Because the Embedded Transmit Commands have been enabled,
@@ -1225,15 +672,15 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
info->xmit_cnt--;
info->xmit_tail = (info->xmit_tail + 1) &
(SERIAL_XMIT_SIZE - 1);
- cy_writeb(base_addr + (CyTDR << index), outch);
+ cyy_writeb(info, CyTDR, outch);
info->icount.tx++;
} else {
if (char_count > 1) {
info->xmit_cnt--;
info->xmit_tail = (info->xmit_tail + 1) &
(SERIAL_XMIT_SIZE - 1);
- cy_writeb(base_addr + (CyTDR << index), outch);
- cy_writeb(base_addr + (CyTDR << index), 0);
+ cyy_writeb(info, CyTDR, outch);
+ cyy_writeb(info, CyTDR, 0);
info->icount.tx++;
char_count--;
}
@@ -1241,17 +688,19 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
}
done:
- tty_wakeup(info->port.tty);
+ tty_wakeup(tty);
+ tty_kref_put(tty);
end:
/* end of service */
- cy_writeb(base_addr + (CyTIR << index), save_xir & 0x3f);
- cy_writeb(base_addr + (CyCAR << index), save_car);
+ cyy_writeb(info, CyTIR, save_xir & 0x3f);
+ cyy_writeb(info, CyCAR, save_car);
}
static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
void __iomem *base_addr)
{
struct cyclades_port *info;
+ struct tty_struct *tty;
int index = cinfo->bus_index;
u8 save_xir, channel, save_car, mdm_change, mdm_status;
@@ -1259,13 +708,14 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
save_xir = readb(base_addr + (CyMIR << index));
channel = save_xir & CyIRChannel;
info = &cinfo->ports[channel + chip * 4];
- save_car = readb(base_addr + (CyCAR << index));
- cy_writeb(base_addr + (CyCAR << index), save_xir);
+ save_car = cyy_readb(info, CyCAR);
+ cyy_writeb(info, CyCAR, save_xir);
- mdm_change = readb(base_addr + (CyMISR << index));
- mdm_status = readb(base_addr + (CyMSVR1 << index));
+ mdm_change = cyy_readb(info, CyMISR);
+ mdm_status = cyy_readb(info, CyMSVR1);
- if (!info->port.tty)
+ tty = tty_port_tty_get(&info->port);
+ if (!tty)
goto end;
if (mdm_change & CyANY_DELTA) {
@@ -1279,35 +729,32 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
if (mdm_change & CyRI)
info->icount.rng++;
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&info->port.delta_msr_wait);
}
if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) {
- if (!(mdm_status & CyDCD)) {
- tty_hangup(info->port.tty);
- info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- }
- wake_up_interruptible(&info->port.open_wait);
+ if (mdm_status & CyDCD)
+ wake_up_interruptible(&info->port.open_wait);
+ else
+ tty_hangup(tty);
}
if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) {
- if (info->port.tty->hw_stopped) {
+ if (tty->hw_stopped) {
if (mdm_status & CyCTS) {
/* cy_start isn't used
because... !!! */
- info->port.tty->hw_stopped = 0;
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) |
- CyTxRdy);
- tty_wakeup(info->port.tty);
+ tty->hw_stopped = 0;
+ cyy_writeb(info, CySRER,
+ cyy_readb(info, CySRER) | CyTxRdy);
+ tty_wakeup(tty);
}
} else {
if (!(mdm_status & CyCTS)) {
/* cy_stop isn't used
because ... !!! */
- info->port.tty->hw_stopped = 1;
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) &
- ~CyTxRdy);
+ tty->hw_stopped = 1;
+ cyy_writeb(info, CySRER,
+ cyy_readb(info, CySRER) & ~CyTxRdy);
}
}
}
@@ -1315,10 +762,11 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
}
if (mdm_change & CyRI) {
}*/
+ tty_kref_put(tty);
end:
/* end of service */
- cy_writeb(base_addr + (CyMIR << index), save_xir & 0x3f);
- cy_writeb(base_addr + (CyCAR << index), save_car);
+ cyy_writeb(info, CyMIR, save_xir & 0x3f);
+ cyy_writeb(info, CyCAR, save_car);
}
/* The real interrupt service routine is called
@@ -1389,6 +837,56 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
} /* cyy_interrupt */
+static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set,
+ unsigned int clear)
+{
+ struct cyclades_card *card = info->card;
+ int channel = info->line - card->first_line;
+ u32 rts, dtr, msvrr, msvrd;
+
+ channel &= 0x03;
+
+ if (info->rtsdtr_inv) {
+ msvrr = CyMSVR2;
+ msvrd = CyMSVR1;
+ rts = CyDTR;
+ dtr = CyRTS;
+ } else {
+ msvrr = CyMSVR1;
+ msvrd = CyMSVR2;
+ rts = CyRTS;
+ dtr = CyDTR;
+ }
+ if (set & TIOCM_RTS) {
+ cyy_writeb(info, CyCAR, channel);
+ cyy_writeb(info, msvrr, rts);
+ }
+ if (clear & TIOCM_RTS) {
+ cyy_writeb(info, CyCAR, channel);
+ cyy_writeb(info, msvrr, ~rts);
+ }
+ if (set & TIOCM_DTR) {
+ cyy_writeb(info, CyCAR, channel);
+ cyy_writeb(info, msvrd, dtr);
+#ifdef CY_DEBUG_DTR
+ printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
+ printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
+ cyy_readb(info, CyMSVR1),
+ cyy_readb(info, CyMSVR2));
+#endif
+ }
+ if (clear & TIOCM_DTR) {
+ cyy_writeb(info, CyCAR, channel);
+ cyy_writeb(info, msvrd, ~dtr);
+#ifdef CY_DEBUG_DTR
+ printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
+ printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
+ cyy_readb(info, CyMSVR1),
+ cyy_readb(info, CyMSVR2));
+#endif
+ }
+}
+
/***********************************************************/
/********* End of block of Cyclom-Y specific code **********/
/******** Start of block of Cyclades-Z specific code *******/
@@ -1398,15 +896,9 @@ static int
cyz_fetch_msg(struct cyclades_card *cinfo,
__u32 *channel, __u8 *cmd, __u32 *param)
{
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BOARD_CTRL __iomem *board_ctrl;
+ struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
unsigned long loc_doorbell;
- firm_id = cinfo->base_addr + ID_ADDRESS;
- zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
-
loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell);
if (loc_doorbell) {
*cmd = (char)(0xff & loc_doorbell);
@@ -1422,19 +914,13 @@ static int
cyz_issue_cmd(struct cyclades_card *cinfo,
__u32 channel, __u8 cmd, __u32 param)
{
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BOARD_CTRL __iomem *board_ctrl;
+ struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
__u32 __iomem *pci_doorbell;
unsigned int index;
- firm_id = cinfo->base_addr + ID_ADDRESS;
if (!cyz_is_loaded(cinfo))
return -1;
- zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
-
index = 0;
pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell;
while ((readl(pci_doorbell) & 0xff) != 0) {
@@ -1449,11 +935,10 @@ cyz_issue_cmd(struct cyclades_card *cinfo,
return 0;
} /* cyz_issue_cmd */
-static void cyz_handle_rx(struct cyclades_port *info,
- struct BUF_CTRL __iomem *buf_ctrl)
+static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
{
+ struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
struct cyclades_card *cinfo = info->card;
- struct tty_struct *tty = info->port.tty;
unsigned int char_count;
int len;
#ifdef BLOCKMOVE
@@ -1542,11 +1027,10 @@ static void cyz_handle_rx(struct cyclades_port *info,
}
}
-static void cyz_handle_tx(struct cyclades_port *info,
- struct BUF_CTRL __iomem *buf_ctrl)
+static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty)
{
+ struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
struct cyclades_card *cinfo = info->card;
- struct tty_struct *tty = info->port.tty;
u8 data;
unsigned int char_count;
#ifdef BLOCKMOVE
@@ -1621,34 +1105,24 @@ ztxdone:
static void cyz_handle_cmd(struct cyclades_card *cinfo)
{
+ struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
struct tty_struct *tty;
struct cyclades_port *info;
- static struct FIRM_ID __iomem *firm_id;
- static struct ZFW_CTRL __iomem *zfw_ctrl;
- static struct BOARD_CTRL __iomem *board_ctrl;
- static struct CH_CTRL __iomem *ch_ctrl;
- static struct BUF_CTRL __iomem *buf_ctrl;
__u32 channel, param, fw_ver;
__u8 cmd;
int special_count;
int delta_count;
- firm_id = cinfo->base_addr + ID_ADDRESS;
- zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
fw_ver = readl(&board_ctrl->fw_version);
while (cyz_fetch_msg(cinfo, &channel, &cmd, &param) == 1) {
special_count = 0;
delta_count = 0;
info = &cinfo->ports[channel];
- tty = info->port.tty;
+ tty = tty_port_tty_get(&info->port);
if (tty == NULL)
continue;
- ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
- buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
-
switch (cmd) {
case C_CM_PR_ERROR:
tty_insert_flip_char(tty, 0, TTY_PARITY);
@@ -1669,15 +1143,12 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
info->icount.dcd++;
delta_count++;
if (info->port.flags & ASYNC_CHECK_CD) {
- if ((fw_ver > 241 ? ((u_long) param) :
- readl(&ch_ctrl->rs_status)) &
- C_RS_DCD) {
+ u32 dcd = fw_ver > 241 ? param :
+ readl(&info->u.cyz.ch_ctrl->rs_status);
+ if (dcd & C_RS_DCD)
wake_up_interruptible(&info->port.open_wait);
- } else {
- tty_hangup(info->port.tty);
- wake_up_interruptible(&info->port.open_wait);
- info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- }
+ else
+ tty_hangup(tty);
}
break;
case C_CM_MCTS:
@@ -1706,7 +1177,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, "
"port %ld\n", info->card, channel);
#endif
- cyz_handle_rx(info, buf_ctrl);
+ cyz_handle_rx(info, tty);
break;
case C_CM_TXBEMPTY:
case C_CM_TXLOWWM:
@@ -1716,7 +1187,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, "
"port %ld\n", info->card, channel);
#endif
- cyz_handle_tx(info, buf_ctrl);
+ cyz_handle_tx(info, tty);
break;
#endif /* CONFIG_CYZ_INTR */
case C_CM_FATAL:
@@ -1726,9 +1197,10 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
break;
}
if (delta_count)
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&info->port.delta_msr_wait);
if (special_count)
tty_schedule_flip(tty);
+ tty_kref_put(tty);
}
}
@@ -1774,10 +1246,6 @@ static void cyz_poll(unsigned long arg)
{
struct cyclades_card *cinfo;
struct cyclades_port *info;
- struct tty_struct *tty;
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BUF_CTRL __iomem *buf_ctrl;
unsigned long expires = jiffies + HZ;
unsigned int port, card;
@@ -1789,10 +1257,6 @@ static void cyz_poll(unsigned long arg)
if (!cyz_is_loaded(cinfo))
continue;
- firm_id = cinfo->base_addr + ID_ADDRESS;
- zfw_ctrl = cinfo->base_addr +
- (readl(&firm_id->zfwctrl_addr) & 0xfffff);
-
/* Skip first polling cycle to avoid racing conditions with the FW */
if (!cinfo->intr_enabled) {
cinfo->intr_enabled = 1;
@@ -1802,13 +1266,17 @@ static void cyz_poll(unsigned long arg)
cyz_handle_cmd(cinfo);
for (port = 0; port < cinfo->nports; port++) {
+ struct tty_struct *tty;
+
info = &cinfo->ports[port];
- tty = info->port.tty;
- buf_ctrl = &(zfw_ctrl->buf_ctrl[port]);
+ tty = tty_port_tty_get(&info->port);
+ /* OK to pass NULL to the handle functions below.
+ They need to drop the data in that case. */
if (!info->throttle)
- cyz_handle_rx(info, buf_ctrl);
- cyz_handle_tx(info, buf_ctrl);
+ cyz_handle_rx(info, tty);
+ cyz_handle_tx(info, tty);
+ tty_kref_put(tty);
}
/* poll every 'cyz_polling_cycle' period */
expires = jiffies + cyz_polling_cycle;
@@ -1824,13 +1292,12 @@ static void cyz_poll(unsigned long arg)
/* This is called whenever a port becomes active;
interrupts are enabled and DTR & RTS are turned on.
*/
-static int startup(struct cyclades_port *info)
+static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
{
struct cyclades_card *card;
unsigned long flags;
int retval = 0;
- void __iomem *base_addr;
- int chip, channel, index;
+ int channel;
unsigned long page;
card = info->card;
@@ -1842,15 +1309,11 @@ static int startup(struct cyclades_port *info)
spin_lock_irqsave(&card->card_lock, flags);
- if (info->port.flags & ASYNC_INITIALIZED) {
- free_page(page);
+ if (info->port.flags & ASYNC_INITIALIZED)
goto errout;
- }
if (!info->type) {
- if (info->port.tty)
- set_bit(TTY_IO_ERROR, &info->port.tty->flags);
- free_page(page);
+ set_bit(TTY_IO_ERROR, &tty->flags);
goto errout;
}
@@ -1861,96 +1324,53 @@ static int startup(struct cyclades_port *info)
spin_unlock_irqrestore(&card->card_lock, flags);
- set_line_char(info);
+ cy_set_line_char(info, tty);
if (!cy_is_Z(card)) {
- chip = channel >> 2;
channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-#ifdef CY_DEBUG_OPEN
- printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, "
- "base_addr %p\n",
- card, chip, channel, base_addr);
-#endif
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
+ cyy_writeb(info, CyCAR, channel);
- cy_writeb(base_addr + (CyRTPR << index),
+ cyy_writeb(info, CyRTPR,
(info->default_timeout ? info->default_timeout : 0x02));
/* 10ms rx timeout */
- cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR,
- index);
-
- cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
- cy_writeb(base_addr + (CyMSVR1 << index), CyRTS);
- cy_writeb(base_addr + (CyMSVR2 << index), CyDTR);
-
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:startup raising DTR\n");
- printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
- readb(base_addr + (CyMSVR1 << index)),
- readb(base_addr + (CyMSVR2 << index)));
-#endif
-
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) | CyRxData);
- info->port.flags |= ASYNC_INITIALIZED;
-
- if (info->port.tty)
- clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
- info->breakon = info->breakoff = 0;
- memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
- info->idle_stats.in_use =
- info->idle_stats.recv_idle =
- info->idle_stats.xmit_idle = jiffies;
+ cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR);
- spin_unlock_irqrestore(&card->card_lock, flags);
+ cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0);
+ cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData);
} else {
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BOARD_CTRL __iomem *board_ctrl;
- struct CH_CTRL __iomem *ch_ctrl;
+ struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
- base_addr = card->base_addr;
-
- firm_id = base_addr + ID_ADDRESS;
if (!cyz_is_loaded(card))
return -ENODEV;
- zfw_ctrl = card->base_addr +
- (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
- ch_ctrl = zfw_ctrl->ch_ctrl;
-
#ifdef CY_DEBUG_OPEN
printk(KERN_DEBUG "cyc startup Z card %d, channel %d, "
- "base_addr %p\n", card, channel, base_addr);
+ "base_addr %p\n", card, channel, card->base_addr);
#endif
spin_lock_irqsave(&card->card_lock, flags);
- cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE);
+ cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE);
#ifdef Z_WAKE
#ifdef CONFIG_CYZ_INTR
- cy_writel(&ch_ctrl[channel].intr_enable,
+ cy_writel(&ch_ctrl->intr_enable,
C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD);
#else
- cy_writel(&ch_ctrl[channel].intr_enable,
+ cy_writel(&ch_ctrl->intr_enable,
C_IN_IOCTLW | C_IN_MDCD);
#endif /* CONFIG_CYZ_INTR */
#else
#ifdef CONFIG_CYZ_INTR
- cy_writel(&ch_ctrl[channel].intr_enable,
+ cy_writel(&ch_ctrl->intr_enable,
C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
C_IN_RXNNDT | C_IN_MDCD);
#else
- cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD);
+ cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD);
#endif /* CONFIG_CYZ_INTR */
#endif /* Z_WAKE */
@@ -1969,32 +1389,22 @@ static int startup(struct cyclades_port *info)
/* set timeout !!! */
/* set RTS and DTR !!! */
- cy_writel(&ch_ctrl[channel].rs_control,
- readl(&ch_ctrl[channel].rs_control) | C_RS_RTS |
- C_RS_DTR);
- retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
- if (retval != 0) {
- printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was "
- "%x\n", info->line, retval);
- }
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:startup raising Z DTR\n");
-#endif
+ tty_port_raise_dtr_rts(&info->port);
/* enable send, recv, modem !!! */
+ }
- info->port.flags |= ASYNC_INITIALIZED;
- if (info->port.tty)
- clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
- info->breakon = info->breakoff = 0;
- memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
- info->idle_stats.in_use =
- info->idle_stats.recv_idle =
- info->idle_stats.xmit_idle = jiffies;
+ info->port.flags |= ASYNC_INITIALIZED;
- spin_unlock_irqrestore(&card->card_lock, flags);
- }
+ clear_bit(TTY_IO_ERROR, &tty->flags);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+ info->breakon = info->breakoff = 0;
+ memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
+ info->idle_stats.in_use =
+ info->idle_stats.recv_idle =
+ info->idle_stats.xmit_idle = jiffies;
+
+ spin_unlock_irqrestore(&card->card_lock, flags);
#ifdef CY_DEBUG_OPEN
printk(KERN_DEBUG "cyc startup done\n");
@@ -2003,28 +1413,20 @@ static int startup(struct cyclades_port *info)
errout:
spin_unlock_irqrestore(&card->card_lock, flags);
+ free_page(page);
return retval;
} /* startup */
static void start_xmit(struct cyclades_port *info)
{
- struct cyclades_card *card;
+ struct cyclades_card *card = info->card;
unsigned long flags;
- void __iomem *base_addr;
- int chip, channel, index;
+ int channel = info->line - card->first_line;
- card = info->card;
- channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index), channel);
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) | CyTxRdy);
+ cyy_writeb(info, CyCAR, channel & 0x03);
+ cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
spin_unlock_irqrestore(&card->card_lock, flags);
} else {
#ifdef CONFIG_CYZ_INTR
@@ -2047,12 +1449,11 @@ static void start_xmit(struct cyclades_port *info)
* This routine shuts down a serial port; interrupts are disabled,
* and DTR is dropped if the hangup on close termio flag is on.
*/
-static void shutdown(struct cyclades_port *info)
+static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
{
struct cyclades_card *card;
unsigned long flags;
- void __iomem *base_addr;
- int chip, channel, index;
+ int channel;
if (!(info->port.flags & ASYNC_INITIALIZED))
return;
@@ -2060,21 +1461,10 @@ static void shutdown(struct cyclades_port *info)
card = info->card;
channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
-#ifdef CY_DEBUG_OPEN
- printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, "
- "channel %d, base_addr %p\n",
- card, chip, channel, base_addr);
-#endif
-
spin_lock_irqsave(&card->card_lock, flags);
/* Clear delta_msr_wait queue to avoid mem leaks. */
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&info->port.delta_msr_wait);
if (info->port.xmit_buf) {
unsigned char *temp;
@@ -2082,47 +1472,25 @@ static void shutdown(struct cyclades_port *info)
info->port.xmit_buf = NULL;
free_page((unsigned long)temp);
}
- cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
- if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) {
- cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS);
- cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR);
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc shutdown dropping DTR\n");
- printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
- readb(base_addr + (CyMSVR1 << index)),
- readb(base_addr + (CyMSVR2 << index)));
-#endif
- }
- cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index);
+ if (tty->termios->c_cflag & HUPCL)
+ cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR);
+
+ cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR);
/* it may be appropriate to clear _XMIT at
some later date (after testing)!!! */
- if (info->port.tty)
- set_bit(TTY_IO_ERROR, &info->port.tty->flags);
+ set_bit(TTY_IO_ERROR, &tty->flags);
info->port.flags &= ~ASYNC_INITIALIZED;
spin_unlock_irqrestore(&card->card_lock, flags);
} else {
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BOARD_CTRL __iomem *board_ctrl;
- struct CH_CTRL __iomem *ch_ctrl;
- int retval;
-
- base_addr = card->base_addr;
#ifdef CY_DEBUG_OPEN
printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, "
- "base_addr %p\n", card, channel, base_addr);
+ "base_addr %p\n", card, channel, card->base_addr);
#endif
- firm_id = base_addr + ID_ADDRESS;
if (!cyz_is_loaded(card))
return;
- zfw_ctrl = card->base_addr +
- (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
- ch_ctrl = zfw_ctrl->ch_ctrl;
-
spin_lock_irqsave(&card->card_lock, flags);
if (info->port.xmit_buf) {
@@ -2132,23 +1500,10 @@ static void shutdown(struct cyclades_port *info)
free_page((unsigned long)temp);
}
- if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) {
- cy_writel(&ch_ctrl[channel].rs_control,
- (__u32)(readl(&ch_ctrl[channel].rs_control) &
- ~(C_RS_RTS | C_RS_DTR)));
- retval = cyz_issue_cmd(info->card, channel,
- C_CM_IOCTLM, 0L);
- if (retval != 0) {
- printk(KERN_ERR"cyc:shutdown retval on ttyC%d "
- "was %x\n", info->line, retval);
- }
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n");
-#endif
- }
+ if (tty->termios->c_cflag & HUPCL)
+ tty_port_lower_dtr_rts(&info->port);
- if (info->port.tty)
- set_bit(TTY_IO_ERROR, &info->port.tty->flags);
+ set_bit(TTY_IO_ERROR, &tty->flags);
info->port.flags &= ~ASYNC_INITIALIZED;
spin_unlock_irqrestore(&card->card_lock, flags);
@@ -2165,199 +1520,6 @@ static void shutdown(struct cyclades_port *info)
* ------------------------------------------------------------
*/
-static int
-block_til_ready(struct tty_struct *tty, struct file *filp,
- struct cyclades_port *info)
-{
- DECLARE_WAITQUEUE(wait, current);
- struct cyclades_card *cinfo;
- unsigned long flags;
- int chip, channel, index;
- int retval;
- void __iomem *base_addr;
-
- cinfo = info->card;
- channel = info->line - cinfo->first_line;
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) {
- wait_event_interruptible(info->port.close_wait,
- !(info->port.flags & ASYNC_CLOSING));
- return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS;
- }
-
- /*
- * If non-blocking mode is set, then make the check up front
- * and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
- * cy_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
-#ifdef CY_DEBUG_OPEN
- printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, "
- "count = %d\n", info->line, info->port.count);
-#endif
- spin_lock_irqsave(&cinfo->card_lock, flags);
- if (!tty_hung_up_p(filp))
- info->port.count--;
- spin_unlock_irqrestore(&cinfo->card_lock, flags);
-#ifdef CY_DEBUG_COUNT
- printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to "
- "%d\n", current->pid, info->port.count);
-#endif
- info->port.blocked_open++;
-
- if (!cy_is_Z(cinfo)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = cinfo->bus_index;
- base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);
-
- while (1) {
- spin_lock_irqsave(&cinfo->card_lock, flags);
- if ((tty->termios->c_cflag & CBAUD)) {
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- cy_writeb(base_addr + (CyMSVR1 << index),
- CyRTS);
- cy_writeb(base_addr + (CyMSVR2 << index),
- CyDTR);
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:block_til_ready raising "
- "DTR\n");
- printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
- readb(base_addr + (CyMSVR1 << index)),
- readb(base_addr + (CyMSVR2 << index)));
-#endif
- }
- spin_unlock_irqrestore(&cinfo->card_lock, flags);
-
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(info->port.flags & ASYNC_INITIALIZED)) {
- retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS);
- break;
- }
-
- spin_lock_irqsave(&cinfo->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) ||
- (readb(base_addr +
- (CyMSVR1 << index)) & CyDCD))) {
- spin_unlock_irqrestore(&cinfo->card_lock, flags);
- break;
- }
- spin_unlock_irqrestore(&cinfo->card_lock, flags);
-
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-#ifdef CY_DEBUG_OPEN
- printk(KERN_DEBUG "cyc block_til_ready blocking: "
- "ttyC%d, count = %d\n",
- info->line, info->port.count);
-#endif
- schedule();
- }
- } else {
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BOARD_CTRL __iomem *board_ctrl;
- struct CH_CTRL __iomem *ch_ctrl;
-
- base_addr = cinfo->base_addr;
- firm_id = base_addr + ID_ADDRESS;
- if (!cyz_is_loaded(cinfo)) {
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
- return -EINVAL;
- }
-
- zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr)
- & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
- ch_ctrl = zfw_ctrl->ch_ctrl;
-
- while (1) {
- if ((tty->termios->c_cflag & CBAUD)) {
- cy_writel(&ch_ctrl[channel].rs_control,
- readl(&ch_ctrl[channel].rs_control) |
- C_RS_RTS | C_RS_DTR);
- retval = cyz_issue_cmd(cinfo,
- channel, C_CM_IOCTLM, 0L);
- if (retval != 0) {
- printk(KERN_ERR "cyc:block_til_ready "
- "retval on ttyC%d was %x\n",
- info->line, retval);
- }
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:block_til_ready raising "
- "Z DTR\n");
-#endif
- }
-
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(info->port.flags & ASYNC_INITIALIZED)) {
- retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS);
- break;
- }
- if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) ||
- (readl(&ch_ctrl[channel].rs_status) &
- C_RS_DCD))) {
- break;
- }
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-#ifdef CY_DEBUG_OPEN
- printk(KERN_DEBUG "cyc block_til_ready blocking: "
- "ttyC%d, count = %d\n",
- info->line, info->port.count);
-#endif
- schedule();
- }
- }
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
- if (!tty_hung_up_p(filp)) {
- info->port.count++;
-#ifdef CY_DEBUG_COUNT
- printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing "
- "count to %d\n", current->pid, info->port.count);
-#endif
- }
- info->port.blocked_open--;
-#ifdef CY_DEBUG_OPEN
- printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, "
- "count = %d\n", info->line, info->port.count);
-#endif
- if (retval)
- return retval;
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
-} /* block_til_ready */
-
/*
* This routine is called whenever a serial port is opened. It
* performs the serial-specific initialization for the tty structure.
@@ -2436,7 +1598,6 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line);
#endif
tty->driver_data = info;
- info->port.tty = tty;
if (serial_paranoia_check(info, tty->name, "cy_open"))
return -ENODEV;
@@ -2462,11 +1623,11 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
/*
* Start up serial port
*/
- retval = startup(info);
+ retval = cy_startup(info, tty);
if (retval)
return retval;
- retval = block_til_ready(tty, filp, info);
+ retval = tty_port_block_til_ready(&info->port, tty, filp);
if (retval) {
#ifdef CY_DEBUG_OPEN
printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready "
@@ -2476,6 +1637,7 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
}
info->throttle = 0;
+ tty_port_tty_set(&info->port, tty);
#ifdef CY_DEBUG_OPEN
printk(KERN_DEBUG "cyc:cy_open done\n");
@@ -2490,8 +1652,6 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
{
struct cyclades_card *card;
struct cyclades_port *info = tty->driver_data;
- void __iomem *base_addr;
- int chip, channel, index;
unsigned long orig_jiffies;
int char_time;
@@ -2535,13 +1695,8 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
timeout, char_time, jiffies);
#endif
card = info->card;
- channel = (info->line) - (card->first_line);
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
- while (readb(base_addr + (CySRER << index)) & CyTxRdy) {
+ while (cyy_readb(info, CySRER) & CyTxRdy) {
#ifdef CY_DEBUG_WAIT_UNTIL_SENT
printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies);
#endif
@@ -2595,103 +1750,37 @@ static void cy_flush_buffer(struct tty_struct *tty)
} /* cy_flush_buffer */
-/*
- * This routine is called when a particular tty device is closed.
- */
-static void cy_close(struct tty_struct *tty, struct file *filp)
+static void cy_do_close(struct tty_port *port)
{
- struct cyclades_port *info = tty->driver_data;
+ struct cyclades_port *info = container_of(port, struct cyclades_port,
+ port);
struct cyclades_card *card;
unsigned long flags;
-
-#ifdef CY_DEBUG_OTHER
- printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line);
-#endif
-
- if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
- return;
+ int channel;
card = info->card;
-
- spin_lock_irqsave(&card->card_lock, flags);
- /* If the TTY is being hung up, nothing to do */
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- return;
- }
-#ifdef CY_DEBUG_OPEN
- printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line,
- info->port.count);
-#endif
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. Info->count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk(KERN_ERR "cyc:cy_close: bad serial port count; "
- "tty->count is 1, info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
-#ifdef CY_DEBUG_COUNT
- printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n",
- current->pid, info->port.count - 1);
-#endif
- if (--info->port.count < 0) {
-#ifdef CY_DEBUG_COUNT
- printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n");
-#endif
- info->port.count = 0;
- }
- if (info->port.count) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- return;
- }
- info->port.flags |= ASYNC_CLOSING;
-
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (info->port.closing_wait != CY_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->port.closing_wait);
-
+ channel = info->line - card->first_line;
spin_lock_irqsave(&card->card_lock, flags);
if (!cy_is_Z(card)) {
- int channel = info->line - card->first_line;
- int index = card->bus_index;
- void __iomem *base_addr = card->base_addr +
- (cy_chip_offset[channel >> 2] << index);
/* Stop accepting input */
- channel &= 0x03;
- cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) & ~CyRxData);
+ cyy_writeb(info, CyCAR, channel & 0x03);
+ cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData);
if (info->port.flags & ASYNC_INITIALIZED) {
/* Waiting for on-board buffers to be empty before
closing the port */
spin_unlock_irqrestore(&card->card_lock, flags);
- cy_wait_until_sent(tty, info->timeout);
+ cy_wait_until_sent(port->tty, info->timeout);
spin_lock_irqsave(&card->card_lock, flags);
}
} else {
#ifdef Z_WAKE
/* Waiting for on-board buffers to be empty before closing
the port */
- void __iomem *base_addr = card->base_addr;
- struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS;
- struct ZFW_CTRL __iomem *zfw_ctrl =
- base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl;
- int channel = info->line - card->first_line;
+ struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
int retval;
- if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) {
+ if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) {
retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L);
if (retval != 0) {
printk(KERN_DEBUG "cyc:cy_close retval on "
@@ -2703,32 +1792,19 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
}
#endif
}
-
spin_unlock_irqrestore(&card->card_lock, flags);
- shutdown(info);
- cy_flush_buffer(tty);
- tty_ldisc_flush(tty);
- spin_lock_irqsave(&card->card_lock, flags);
-
- tty->closing = 0;
- info->port.tty = NULL;
- if (info->port.blocked_open) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs
- (info->port.close_delay));
- }
- wake_up_interruptible(&info->port.open_wait);
- spin_lock_irqsave(&card->card_lock, flags);
- }
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
- wake_up_interruptible(&info->port.close_wait);
-
-#ifdef CY_DEBUG_OTHER
- printk(KERN_DEBUG "cyc:cy_close done\n");
-#endif
+ cy_shutdown(info, port->tty);
+}
- spin_unlock_irqrestore(&card->card_lock, flags);
+/*
+ * This routine is called when a particular tty device is closed.
+ */
+static void cy_close(struct tty_struct *tty, struct file *filp)
+{
+ struct cyclades_port *info = tty->driver_data;
+ if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
+ return;
+ tty_port_close(&info->port, tty, filp);
} /* cy_close */
/* This routine gets called when tty_write has put something into
@@ -2871,18 +1947,13 @@ static int cy_write_room(struct tty_struct *tty)
static int cy_chars_in_buffer(struct tty_struct *tty)
{
- struct cyclades_card *card;
struct cyclades_port *info = tty->driver_data;
- int channel;
if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
return 0;
- card = info->card;
- channel = (info->line) - (card->first_line);
-
#ifdef Z_EXT_CHARS_IN_BUFFER
- if (!cy_is_Z(card)) {
+ if (!cy_is_Z(info->card)) {
#endif /* Z_EXT_CHARS_IN_BUFFER */
#ifdef CY_DEBUG_IO
printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
@@ -2891,20 +1962,11 @@ static int cy_chars_in_buffer(struct tty_struct *tty)
return info->xmit_cnt;
#ifdef Z_EXT_CHARS_IN_BUFFER
} else {
- static struct FIRM_ID *firm_id;
- static struct ZFW_CTRL *zfw_ctrl;
- static struct CH_CTRL *ch_ctrl;
- static struct BUF_CTRL *buf_ctrl;
+ struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
int char_count;
__u32 tx_put, tx_get, tx_bufsize;
lock_kernel();
- firm_id = card->base_addr + ID_ADDRESS;
- zfw_ctrl = card->base_addr +
- (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
- buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
-
tx_get = readl(&buf_ctrl->tx_get);
tx_put = readl(&buf_ctrl->tx_put);
tx_bufsize = readl(&buf_ctrl->tx_bufsize);
@@ -2957,48 +2019,44 @@ static void cyy_baud_calc(struct cyclades_port *info, __u32 baud)
* This routine finds or computes the various line characteristics.
* It used to be called config_setup
*/
-static void set_line_char(struct cyclades_port *info)
+static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty)
{
struct cyclades_card *card;
unsigned long flags;
- void __iomem *base_addr;
- int chip, channel, index;
+ int channel;
unsigned cflag, iflag;
int baud, baud_rate = 0;
int i;
- if (!info->port.tty || !info->port.tty->termios)
+ if (!tty->termios) /* XXX can this happen at all? */
return;
if (info->line == -1)
return;
- cflag = info->port.tty->termios->c_cflag;
- iflag = info->port.tty->termios->c_iflag;
+ cflag = tty->termios->c_cflag;
+ iflag = tty->termios->c_iflag;
/*
* Set up the tty->alt_speed kludge
*/
- if (info->port.tty) {
- if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- info->port.tty->alt_speed = 57600;
- if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- info->port.tty->alt_speed = 115200;
- if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
- info->port.tty->alt_speed = 230400;
- if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
- info->port.tty->alt_speed = 460800;
- }
+ if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
+ tty->alt_speed = 57600;
+ if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
+ tty->alt_speed = 115200;
+ if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
+ tty->alt_speed = 230400;
+ if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
+ tty->alt_speed = 460800;
card = info->card;
channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
-
- index = card->bus_index;
+ u32 cflags;
/* baud rate */
- baud = tty_get_baud_rate(info->port.tty);
+ baud = tty_get_baud_rate(tty);
if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
ASYNC_SPD_CUST) {
if (info->custom_divisor)
@@ -3107,124 +2165,68 @@ static void set_line_char(struct cyclades_port *info)
cable. Contact Marcio Saito for details.
***********************************************/
- chip = channel >> 2;
channel &= 0x03;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
+ cyy_writeb(info, CyCAR, channel);
/* tx and rx baud rate */
- cy_writeb(base_addr + (CyTCOR << index), info->tco);
- cy_writeb(base_addr + (CyTBPR << index), info->tbpr);
- cy_writeb(base_addr + (CyRCOR << index), info->rco);
- cy_writeb(base_addr + (CyRBPR << index), info->rbpr);
+ cyy_writeb(info, CyTCOR, info->tco);
+ cyy_writeb(info, CyTBPR, info->tbpr);
+ cyy_writeb(info, CyRCOR, info->rco);
+ cyy_writeb(info, CyRBPR, info->rbpr);
/* set line characteristics according configuration */
- cy_writeb(base_addr + (CySCHR1 << index),
- START_CHAR(info->port.tty));
- cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->port.tty));
- cy_writeb(base_addr + (CyCOR1 << index), info->cor1);
- cy_writeb(base_addr + (CyCOR2 << index), info->cor2);
- cy_writeb(base_addr + (CyCOR3 << index), info->cor3);
- cy_writeb(base_addr + (CyCOR4 << index), info->cor4);
- cy_writeb(base_addr + (CyCOR5 << index), info->cor5);
+ cyy_writeb(info, CySCHR1, START_CHAR(tty));
+ cyy_writeb(info, CySCHR2, STOP_CHAR(tty));
+ cyy_writeb(info, CyCOR1, info->cor1);
+ cyy_writeb(info, CyCOR2, info->cor2);
+ cyy_writeb(info, CyCOR3, info->cor3);
+ cyy_writeb(info, CyCOR4, info->cor4);
+ cyy_writeb(info, CyCOR5, info->cor5);
- cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
- CyCOR3ch, index);
+ cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
+ CyCOR3ch);
/* !!! Is this needed? */
- cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
- cy_writeb(base_addr + (CyRTPR << index),
+ cyy_writeb(info, CyCAR, channel);
+ cyy_writeb(info, CyRTPR,
(info->default_timeout ? info->default_timeout : 0x02));
/* 10ms rx timeout */
- if (C_CLOCAL(info->port.tty)) {
- /* without modem intr */
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) | CyMdmCh);
- /* act on 1->0 modem transitions */
- if ((cflag & CRTSCTS) && info->rflow) {
- cy_writeb(base_addr + (CyMCOR1 << index),
- (CyCTS | rflow_thr[i]));
- } else {
- cy_writeb(base_addr + (CyMCOR1 << index),
- CyCTS);
- }
- /* act on 0->1 modem transitions */
- cy_writeb(base_addr + (CyMCOR2 << index), CyCTS);
- } else {
- /* without modem intr */
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr +
- (CySRER << index)) | CyMdmCh);
- /* act on 1->0 modem transitions */
- if ((cflag & CRTSCTS) && info->rflow) {
- cy_writeb(base_addr + (CyMCOR1 << index),
- (CyDSR | CyCTS | CyRI | CyDCD |
- rflow_thr[i]));
- } else {
- cy_writeb(base_addr + (CyMCOR1 << index),
- CyDSR | CyCTS | CyRI | CyDCD);
- }
- /* act on 0->1 modem transitions */
- cy_writeb(base_addr + (CyMCOR2 << index),
- CyDSR | CyCTS | CyRI | CyDCD);
- }
+ cflags = CyCTS;
+ if (!C_CLOCAL(tty))
+ cflags |= CyDSR | CyRI | CyDCD;
+ /* without modem intr */
+ cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh);
+ /* act on 1->0 modem transitions */
+ if ((cflag & CRTSCTS) && info->rflow)
+ cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]);
+ else
+ cyy_writeb(info, CyMCOR1, cflags);
+ /* act on 0->1 modem transitions */
+ cyy_writeb(info, CyMCOR2, cflags);
- if (i == 0) { /* baud rate is zero, turn off line */
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR1 << index),
- ~CyRTS);
- } else {
- cy_writeb(base_addr + (CyMSVR2 << index),
- ~CyDTR);
- }
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n");
- printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
- readb(base_addr + (CyMSVR1 << index)),
- readb(base_addr + (CyMSVR2 << index)));
-#endif
- } else {
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR1 << index),
- CyRTS);
- } else {
- cy_writeb(base_addr + (CyMSVR2 << index),
- CyDTR);
- }
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:set_line_char raising DTR\n");
- printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
- readb(base_addr + (CyMSVR1 << index)),
- readb(base_addr + (CyMSVR2 << index)));
-#endif
- }
+ if (i == 0) /* baud rate is zero, turn off line */
+ cyy_change_rts_dtr(info, 0, TIOCM_DTR);
+ else
+ cyy_change_rts_dtr(info, TIOCM_DTR, 0);
- if (info->port.tty)
- clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
+ clear_bit(TTY_IO_ERROR, &tty->flags);
spin_unlock_irqrestore(&card->card_lock, flags);
} else {
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct CH_CTRL __iomem *ch_ctrl;
+ struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
__u32 sw_flow;
int retval;
- firm_id = card->base_addr + ID_ADDRESS;
if (!cyz_is_loaded(card))
return;
- zfw_ctrl = card->base_addr +
- (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
-
/* baud rate */
- baud = tty_get_baud_rate(info->port.tty);
+ baud = tty_get_baud_rate(tty);
if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
ASYNC_SPD_CUST) {
if (info->custom_divisor)
@@ -3335,45 +2337,38 @@ static void set_line_char(struct cyclades_port *info)
"was %x\n", info->line, retval);
}
- if (info->port.tty)
- clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
+ clear_bit(TTY_IO_ERROR, &tty->flags);
}
} /* set_line_char */
-static int
-get_serial_info(struct cyclades_port *info,
+static int cy_get_serial_info(struct cyclades_port *info,
struct serial_struct __user *retinfo)
{
- struct serial_struct tmp;
struct cyclades_card *cinfo = info->card;
-
- if (!retinfo)
- return -EFAULT;
- memset(&tmp, 0, sizeof(tmp));
- tmp.type = info->type;
- tmp.line = info->line;
- tmp.port = (info->card - cy_card) * 0x100 + info->line -
- cinfo->first_line;
- tmp.irq = cinfo->irq;
- tmp.flags = info->port.flags;
- tmp.close_delay = info->port.close_delay;
- tmp.closing_wait = info->port.closing_wait;
- tmp.baud_base = info->baud;
- tmp.custom_divisor = info->custom_divisor;
- tmp.hub6 = 0; /*!!! */
+ struct serial_struct tmp = {
+ .type = info->type,
+ .line = info->line,
+ .port = (info->card - cy_card) * 0x100 + info->line -
+ cinfo->first_line,
+ .irq = cinfo->irq,
+ .flags = info->port.flags,
+ .close_delay = info->port.close_delay,
+ .closing_wait = info->port.closing_wait,
+ .baud_base = info->baud,
+ .custom_divisor = info->custom_divisor,
+ .hub6 = 0, /*!!! */
+ };
return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
-} /* get_serial_info */
+}
static int
-set_serial_info(struct cyclades_port *info,
+cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty,
struct serial_struct __user *new_info)
{
struct serial_struct new_serial;
- struct cyclades_port old_info;
if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
return -EFAULT;
- old_info = *info;
if (!capable(CAP_SYS_ADMIN)) {
if (new_serial.close_delay != info->port.close_delay ||
@@ -3403,10 +2398,10 @@ set_serial_info(struct cyclades_port *info,
check_and_exit:
if (info->port.flags & ASYNC_INITIALIZED) {
- set_line_char(info);
+ cy_set_line_char(info, tty);
return 0;
} else {
- return startup(info);
+ return cy_startup(info, tty);
}
} /* set_serial_info */
@@ -3422,24 +2417,14 @@ check_and_exit:
*/
static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value)
{
- struct cyclades_card *card;
- int chip, channel, index;
- unsigned char status;
+ struct cyclades_card *card = info->card;
unsigned int result;
unsigned long flags;
- void __iomem *base_addr;
+ u8 status;
- card = info->card;
- channel = (info->line) - (card->first_line);
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
spin_lock_irqsave(&card->card_lock, flags);
- status = readb(base_addr + (CySRER << index)) &
- (CyTxRdy | CyTxMpty);
+ status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty);
spin_unlock_irqrestore(&card->card_lock, flags);
result = (status ? 0 : TIOCSER_TEMT);
} else {
@@ -3453,34 +2438,23 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file)
{
struct cyclades_port *info = tty->driver_data;
struct cyclades_card *card;
- int chip, channel, index;
- void __iomem *base_addr;
- unsigned long flags;
- unsigned char status;
- unsigned long lstatus;
- unsigned int result;
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BOARD_CTRL __iomem *board_ctrl;
- struct CH_CTRL __iomem *ch_ctrl;
+ int result;
if (serial_paranoia_check(info, tty->name, __func__))
return -ENODEV;
- lock_kernel();
-
card = info->card;
- channel = info->line - card->first_line;
+
+ lock_kernel();
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
+ unsigned long flags;
+ int channel = info->line - card->first_line;
+ u8 status;
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
- status = readb(base_addr + (CyMSVR1 << index));
- status |= readb(base_addr + (CyMSVR2 << index));
+ cyy_writeb(info, CyCAR, channel & 0x03);
+ status = cyy_readb(info, CyMSVR1);
+ status |= cyy_readb(info, CyMSVR2);
spin_unlock_irqrestore(&card->card_lock, flags);
if (info->rtsdtr_inv) {
@@ -3495,27 +2469,22 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file)
((status & CyDSR) ? TIOCM_DSR : 0) |
((status & CyCTS) ? TIOCM_CTS : 0);
} else {
- base_addr = card->base_addr;
- firm_id = card->base_addr + ID_ADDRESS;
- if (cyz_is_loaded(card)) {
- zfw_ctrl = card->base_addr +
- (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
- ch_ctrl = zfw_ctrl->ch_ctrl;
- lstatus = readl(&ch_ctrl[channel].rs_status);
- result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
- ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
- ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
- ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
- ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
- ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
- } else {
- result = 0;
- unlock_kernel();
- return -ENODEV;
+ u32 lstatus;
+
+ if (!cyz_is_loaded(card)) {
+ result = -ENODEV;
+ goto end;
}
+ lstatus = readl(&info->u.cyz.ch_ctrl->rs_status);
+ result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
+ ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
+ ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
+ ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
+ ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
+ ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
}
+end:
unlock_kernel();
return result;
} /* cy_tiomget */
@@ -3526,150 +2495,53 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
{
struct cyclades_port *info = tty->driver_data;
struct cyclades_card *card;
- int chip, channel, index;
- void __iomem *base_addr;
unsigned long flags;
- struct FIRM_ID __iomem *firm_id;
- struct ZFW_CTRL __iomem *zfw_ctrl;
- struct BOARD_CTRL __iomem *board_ctrl;
- struct CH_CTRL __iomem *ch_ctrl;
- int retval;
if (serial_paranoia_check(info, tty->name, __func__))
return -ENODEV;
card = info->card;
- channel = (info->line) - (card->first_line);
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
+ spin_lock_irqsave(&card->card_lock, flags);
+ cyy_change_rts_dtr(info, set, clear);
+ spin_unlock_irqrestore(&card->card_lock, flags);
+ } else {
+ struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
+ int retval, channel = info->line - card->first_line;
+ u32 rs;
- if (set & TIOCM_RTS) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR2 << index),
- CyDTR);
- } else {
- cy_writeb(base_addr + (CyMSVR1 << index),
- CyRTS);
- }
- spin_unlock_irqrestore(&card->card_lock, flags);
- }
- if (clear & TIOCM_RTS) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR2 << index),
- ~CyDTR);
- } else {
- cy_writeb(base_addr + (CyMSVR1 << index),
- ~CyRTS);
- }
- spin_unlock_irqrestore(&card->card_lock, flags);
- }
+ if (!cyz_is_loaded(card))
+ return -ENODEV;
+
+ spin_lock_irqsave(&card->card_lock, flags);
+ rs = readl(&ch_ctrl->rs_control);
+ if (set & TIOCM_RTS)
+ rs |= C_RS_RTS;
+ if (clear & TIOCM_RTS)
+ rs &= ~C_RS_RTS;
if (set & TIOCM_DTR) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR1 << index),
- CyRTS);
- } else {
- cy_writeb(base_addr + (CyMSVR2 << index),
- CyDTR);
- }
+ rs |= C_RS_DTR;
#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
- printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
- readb(base_addr + (CyMSVR1 << index)),
- readb(base_addr + (CyMSVR2 << index)));
+ printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n");
#endif
- spin_unlock_irqrestore(&card->card_lock, flags);
}
if (clear & TIOCM_DTR) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR1 << index),
- ~CyRTS);
- } else {
- cy_writeb(base_addr + (CyMSVR2 << index),
- ~CyDTR);
- }
-
+ rs &= ~C_RS_DTR;
#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
- printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
- readb(base_addr + (CyMSVR1 << index)),
- readb(base_addr + (CyMSVR2 << index)));
+ printk(KERN_DEBUG "cyc:set_modem_info clearing "
+ "Z DTR\n");
#endif
- spin_unlock_irqrestore(&card->card_lock, flags);
}
- } else {
- base_addr = card->base_addr;
-
- firm_id = card->base_addr + ID_ADDRESS;
- if (cyz_is_loaded(card)) {
- zfw_ctrl = card->base_addr +
- (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- board_ctrl = &zfw_ctrl->board_ctrl;
- ch_ctrl = zfw_ctrl->ch_ctrl;
-
- if (set & TIOCM_RTS) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writel(&ch_ctrl[channel].rs_control,
- readl(&ch_ctrl[channel].rs_control) |
- C_RS_RTS);
- spin_unlock_irqrestore(&card->card_lock, flags);
- }
- if (clear & TIOCM_RTS) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writel(&ch_ctrl[channel].rs_control,
- readl(&ch_ctrl[channel].rs_control) &
- ~C_RS_RTS);
- spin_unlock_irqrestore(&card->card_lock, flags);
- }
- if (set & TIOCM_DTR) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writel(&ch_ctrl[channel].rs_control,
- readl(&ch_ctrl[channel].rs_control) |
- C_RS_DTR);
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:set_modem_info raising "
- "Z DTR\n");
-#endif
- spin_unlock_irqrestore(&card->card_lock, flags);
- }
- if (clear & TIOCM_DTR) {
- spin_lock_irqsave(&card->card_lock, flags);
- cy_writel(&ch_ctrl[channel].rs_control,
- readl(&ch_ctrl[channel].rs_control) &
- ~C_RS_DTR);
-#ifdef CY_DEBUG_DTR
- printk(KERN_DEBUG "cyc:set_modem_info clearing "
- "Z DTR\n");
-#endif
- spin_unlock_irqrestore(&card->card_lock, flags);
- }
- } else {
- return -ENODEV;
- }
- spin_lock_irqsave(&card->card_lock, flags);
+ cy_writel(&ch_ctrl->rs_control, rs);
retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
+ spin_unlock_irqrestore(&card->card_lock, flags);
if (retval != 0) {
printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d "
"was %x\n", info->line, retval);
}
- spin_unlock_irqrestore(&card->card_lock, flags);
}
return 0;
-} /* cy_tiocmset */
+}
/*
* cy_break() --- routine which turns the break handling on or off
@@ -3734,41 +2606,18 @@ static int cy_break(struct tty_struct *tty, int break_state)
return retval;
} /* cy_break */
-static int get_mon_info(struct cyclades_port *info,
- struct cyclades_monitor __user *mon)
-{
-
- if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor)))
- return -EFAULT;
- info->mon.int_count = 0;
- info->mon.char_count = 0;
- info->mon.char_max = 0;
- info->mon.char_last = 0;
- return 0;
-} /* get_mon_info */
-
static int set_threshold(struct cyclades_port *info, unsigned long value)
{
- struct cyclades_card *card;
- void __iomem *base_addr;
- int channel, chip, index;
+ struct cyclades_card *card = info->card;
unsigned long flags;
- card = info->card;
- channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr =
- card->base_addr + (cy_chip_offset[chip] << index);
-
info->cor3 &= ~CyREC_FIFO;
info->cor3 |= value & CyREC_FIFO;
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCOR3 << index), info->cor3);
- cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index);
+ cyy_writeb(info, CyCOR3, info->cor3);
+ cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch);
spin_unlock_irqrestore(&card->card_lock, flags);
}
return 0;
@@ -3777,55 +2626,23 @@ static int set_threshold(struct cyclades_port *info, unsigned long value)
static int get_threshold(struct cyclades_port *info,
unsigned long __user *value)
{
- struct cyclades_card *card;
- void __iomem *base_addr;
- int channel, chip, index;
- unsigned long tmp;
+ struct cyclades_card *card = info->card;
- card = info->card;
- channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
- tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO;
+ u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO;
return put_user(tmp, value);
}
return 0;
} /* get_threshold */
-static int set_default_threshold(struct cyclades_port *info,
- unsigned long value)
-{
- info->default_threshold = value & 0x0f;
- return 0;
-} /* set_default_threshold */
-
-static int get_default_threshold(struct cyclades_port *info,
- unsigned long __user *value)
-{
- return put_user(info->default_threshold, value);
-} /* get_default_threshold */
-
static int set_timeout(struct cyclades_port *info, unsigned long value)
{
- struct cyclades_card *card;
- void __iomem *base_addr;
- int channel, chip, index;
+ struct cyclades_card *card = info->card;
unsigned long flags;
- card = info->card;
- channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyRTPR << index), value & 0xff);
+ cyy_writeb(info, CyRTPR, value & 0xff);
spin_unlock_irqrestore(&card->card_lock, flags);
}
return 0;
@@ -3834,36 +2651,35 @@ static int set_timeout(struct cyclades_port *info, unsigned long value)
static int get_timeout(struct cyclades_port *info,
unsigned long __user *value)
{
- struct cyclades_card *card;
- void __iomem *base_addr;
- int channel, chip, index;
- unsigned long tmp;
+ struct cyclades_card *card = info->card;
- card = info->card;
- channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr + (cy_chip_offset[chip] << index);
-
- tmp = readb(base_addr + (CyRTPR << index));
+ u8 tmp = cyy_readb(info, CyRTPR);
return put_user(tmp, value);
}
return 0;
} /* get_timeout */
-static int set_default_timeout(struct cyclades_port *info, unsigned long value)
+static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg,
+ struct cyclades_icount *cprev)
{
- info->default_timeout = value & 0xff;
- return 0;
-} /* set_default_timeout */
+ struct cyclades_icount cnow;
+ unsigned long flags;
+ int ret;
-static int get_default_timeout(struct cyclades_port *info,
- unsigned long __user *value)
-{
- return put_user(info->default_timeout, value);
-} /* get_default_timeout */
+ spin_lock_irqsave(&info->card->card_lock, flags);
+ cnow = info->icount; /* atomic copy */
+ spin_unlock_irqrestore(&info->card->card_lock, flags);
+
+ ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) ||
+ ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) ||
+ ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) ||
+ ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts));
+
+ *cprev = cnow;
+
+ return ret;
+}
/*
* This routine allows the tty driver to implement device-
@@ -3875,8 +2691,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct cyclades_port *info = tty->driver_data;
- struct cyclades_icount cprev, cnow; /* kernel counter temps */
- struct serial_icounter_struct __user *p_cuser; /* user space */
+ struct cyclades_icount cnow; /* kernel counter temps */
int ret_val = 0;
unsigned long flags;
void __user *argp = (void __user *)arg;
@@ -3892,7 +2707,11 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
switch (cmd) {
case CYGETMON:
- ret_val = get_mon_info(info, argp);
+ if (copy_to_user(argp, &info->mon, sizeof(info->mon))) {
+ ret_val = -EFAULT;
+ break;
+ }
+ memset(&info->mon, 0, sizeof(info->mon));
break;
case CYGETTHRESH:
ret_val = get_threshold(info, argp);
@@ -3901,10 +2720,11 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
ret_val = set_threshold(info, arg);
break;
case CYGETDEFTHRESH:
- ret_val = get_default_threshold(info, argp);
+ ret_val = put_user(info->default_threshold,
+ (unsigned long __user *)argp);
break;
case CYSETDEFTHRESH:
- ret_val = set_default_threshold(info, arg);
+ info->default_threshold = arg & 0x0f;
break;
case CYGETTIMEOUT:
ret_val = get_timeout(info, argp);
@@ -3913,21 +2733,20 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
ret_val = set_timeout(info, arg);
break;
case CYGETDEFTIMEOUT:
- ret_val = get_default_timeout(info, argp);
+ ret_val = put_user(info->default_timeout,
+ (unsigned long __user *)argp);
break;
case CYSETDEFTIMEOUT:
- ret_val = set_default_timeout(info, arg);
+ info->default_timeout = arg & 0xff;
break;
case CYSETRFLOW:
info->rflow = (int)arg;
- ret_val = 0;
break;
case CYGETRFLOW:
ret_val = info->rflow;
break;
case CYSETRTSDTR_INV:
info->rtsdtr_inv = (int)arg;
- ret_val = 0;
break;
case CYGETRTSDTR_INV:
ret_val = info->rtsdtr_inv;
@@ -3938,7 +2757,6 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
#ifndef CONFIG_CYZ_INTR
case CYZSETPOLLCYCLE:
cyz_polling_cycle = (arg * HZ) / 1000;
- ret_val = 0;
break;
case CYZGETPOLLCYCLE:
ret_val = (cyz_polling_cycle * 1000) / HZ;
@@ -3946,16 +2764,15 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
#endif /* CONFIG_CYZ_INTR */
case CYSETWAIT:
info->port.closing_wait = (unsigned short)arg * HZ / 100;
- ret_val = 0;
break;
case CYGETWAIT:
ret_val = info->port.closing_wait / (HZ / 100);
break;
case TIOCGSERIAL:
- ret_val = get_serial_info(info, argp);
+ ret_val = cy_get_serial_info(info, argp);
break;
case TIOCSSERIAL:
- ret_val = set_serial_info(info, argp);
+ ret_val = cy_set_serial_info(info, tty, argp);
break;
case TIOCSERGETLSR: /* Get line status register */
ret_val = get_lsr_info(info, argp);
@@ -3971,17 +2788,8 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
/* note the counters on entry */
cnow = info->icount;
spin_unlock_irqrestore(&info->card->card_lock, flags);
- ret_val = wait_event_interruptible(info->delta_msr_wait, ({
- cprev = cnow;
- spin_lock_irqsave(&info->card->card_lock, flags);
- cnow = info->icount; /* atomic copy */
- spin_unlock_irqrestore(&info->card->card_lock, flags);
-
- ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts));
- }));
+ ret_val = wait_event_interruptible(info->port.delta_msr_wait,
+ cy_cflags_changed(info, arg, &cnow));
break;
/*
@@ -3990,46 +2798,29 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
* NB: both 1->0 and 0->1 transitions are counted except for
* RI where only 0->1 is counted.
*/
- case TIOCGICOUNT:
+ case TIOCGICOUNT: {
+ struct serial_icounter_struct sic = { };
+
spin_lock_irqsave(&info->card->card_lock, flags);
cnow = info->icount;
spin_unlock_irqrestore(&info->card->card_lock, flags);
- p_cuser = argp;
- ret_val = put_user(cnow.cts, &p_cuser->cts);
- if (ret_val)
- break;
- ret_val = put_user(cnow.dsr, &p_cuser->dsr);
- if (ret_val)
- break;
- ret_val = put_user(cnow.rng, &p_cuser->rng);
- if (ret_val)
- break;
- ret_val = put_user(cnow.dcd, &p_cuser->dcd);
- if (ret_val)
- break;
- ret_val = put_user(cnow.rx, &p_cuser->rx);
- if (ret_val)
- break;
- ret_val = put_user(cnow.tx, &p_cuser->tx);
- if (ret_val)
- break;
- ret_val = put_user(cnow.frame, &p_cuser->frame);
- if (ret_val)
- break;
- ret_val = put_user(cnow.overrun, &p_cuser->overrun);
- if (ret_val)
- break;
- ret_val = put_user(cnow.parity, &p_cuser->parity);
- if (ret_val)
- break;
- ret_val = put_user(cnow.brk, &p_cuser->brk);
- if (ret_val)
- break;
- ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
- if (ret_val)
- break;
- ret_val = 0;
+
+ sic.cts = cnow.cts;
+ sic.dsr = cnow.dsr;
+ sic.rng = cnow.rng;
+ sic.dcd = cnow.dcd;
+ sic.rx = cnow.rx;
+ sic.tx = cnow.tx;
+ sic.frame = cnow.frame;
+ sic.overrun = cnow.overrun;
+ sic.parity = cnow.parity;
+ sic.brk = cnow.brk;
+ sic.buf_overrun = cnow.buf_overrun;
+
+ if (copy_to_user(argp, &sic, sizeof(sic)))
+ ret_val = -EFAULT;
break;
+ }
default:
ret_val = -ENOIOCTLCMD;
}
@@ -4055,7 +2846,7 @@ static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line);
#endif
- set_line_char(info);
+ cy_set_line_char(info, tty);
if ((old_termios->c_cflag & CRTSCTS) &&
!(tty->termios->c_cflag & CRTSCTS)) {
@@ -4112,8 +2903,6 @@ static void cy_throttle(struct tty_struct *tty)
struct cyclades_port *info = tty->driver_data;
struct cyclades_card *card;
unsigned long flags;
- void __iomem *base_addr;
- int chip, channel, index;
#ifdef CY_DEBUG_THROTTLE
char buf[64];
@@ -4135,24 +2924,9 @@ static void cy_throttle(struct tty_struct *tty)
}
if (tty->termios->c_cflag & CRTSCTS) {
- channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr +
- (cy_chip_offset[chip] << index);
-
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR2 << index),
- ~CyDTR);
- } else {
- cy_writeb(base_addr + (CyMSVR1 << index),
- ~CyRTS);
- }
+ cyy_change_rts_dtr(info, 0, TIOCM_RTS);
spin_unlock_irqrestore(&card->card_lock, flags);
} else {
info->throttle = 1;
@@ -4170,8 +2944,6 @@ static void cy_unthrottle(struct tty_struct *tty)
struct cyclades_port *info = tty->driver_data;
struct cyclades_card *card;
unsigned long flags;
- void __iomem *base_addr;
- int chip, channel, index;
#ifdef CY_DEBUG_THROTTLE
char buf[64];
@@ -4192,24 +2964,9 @@ static void cy_unthrottle(struct tty_struct *tty)
if (tty->termios->c_cflag & CRTSCTS) {
card = info->card;
- channel = info->line - card->first_line;
if (!cy_is_Z(card)) {
- chip = channel >> 2;
- channel &= 0x03;
- index = card->bus_index;
- base_addr = card->base_addr +
- (cy_chip_offset[chip] << index);
-
spin_lock_irqsave(&card->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) channel);
- if (info->rtsdtr_inv) {
- cy_writeb(base_addr + (CyMSVR2 << index),
- CyDTR);
- } else {
- cy_writeb(base_addr + (CyMSVR1 << index),
- CyRTS);
- }
+ cyy_change_rts_dtr(info, TIOCM_RTS, 0);
spin_unlock_irqrestore(&card->card_lock, flags);
} else {
info->throttle = 0;
@@ -4224,8 +2981,7 @@ static void cy_stop(struct tty_struct *tty)
{
struct cyclades_card *cinfo;
struct cyclades_port *info = tty->driver_data;
- void __iomem *base_addr;
- int chip, channel, index;
+ int channel;
unsigned long flags;
#ifdef CY_DEBUG_OTHER
@@ -4238,16 +2994,9 @@ static void cy_stop(struct tty_struct *tty)
cinfo = info->card;
channel = info->line - cinfo->first_line;
if (!cy_is_Z(cinfo)) {
- index = cinfo->bus_index;
- chip = channel >> 2;
- channel &= 0x03;
- base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);
-
spin_lock_irqsave(&cinfo->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char)(channel & 0x0003)); /* index channel */
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) & ~CyTxRdy);
+ cyy_writeb(info, CyCAR, channel & 0x03);
+ cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
spin_unlock_irqrestore(&cinfo->card_lock, flags);
}
} /* cy_stop */
@@ -4256,8 +3005,7 @@ static void cy_start(struct tty_struct *tty)
{
struct cyclades_card *cinfo;
struct cyclades_port *info = tty->driver_data;
- void __iomem *base_addr;
- int chip, channel, index;
+ int channel;
unsigned long flags;
#ifdef CY_DEBUG_OTHER
@@ -4269,17 +3017,10 @@ static void cy_start(struct tty_struct *tty)
cinfo = info->card;
channel = info->line - cinfo->first_line;
- index = cinfo->bus_index;
if (!cy_is_Z(cinfo)) {
- chip = channel >> 2;
- channel &= 0x03;
- base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);
-
spin_lock_irqsave(&cinfo->card_lock, flags);
- cy_writeb(base_addr + (CyCAR << index),
- (u_char) (channel & 0x0003)); /* index channel */
- cy_writeb(base_addr + (CySRER << index),
- readb(base_addr + (CySRER << index)) | CyTxRdy);
+ cyy_writeb(info, CyCAR, channel & 0x03);
+ cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
spin_unlock_irqrestore(&cinfo->card_lock, flags);
}
} /* cy_start */
@@ -4299,17 +3040,84 @@ static void cy_hangup(struct tty_struct *tty)
return;
cy_flush_buffer(tty);
- shutdown(info);
- info->port.count = 0;
-#ifdef CY_DEBUG_COUNT
- printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n",
- current->pid);
-#endif
- info->port.tty = NULL;
- info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- wake_up_interruptible(&info->port.open_wait);
+ cy_shutdown(info, tty);
+ tty_port_hangup(&info->port);
} /* cy_hangup */
+static int cyy_carrier_raised(struct tty_port *port)
+{
+ struct cyclades_port *info = container_of(port, struct cyclades_port,
+ port);
+ struct cyclades_card *cinfo = info->card;
+ unsigned long flags;
+ int channel = info->line - cinfo->first_line;
+ u32 cd;
+
+ spin_lock_irqsave(&cinfo->card_lock, flags);
+ cyy_writeb(info, CyCAR, channel & 0x03);
+ cd = cyy_readb(info, CyMSVR1) & CyDCD;
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);
+
+ return cd;
+}
+
+static void cyy_dtr_rts(struct tty_port *port, int raise)
+{
+ struct cyclades_port *info = container_of(port, struct cyclades_port,
+ port);
+ struct cyclades_card *cinfo = info->card;
+ unsigned long flags;
+
+ spin_lock_irqsave(&cinfo->card_lock, flags);
+ cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0,
+ raise ? 0 : TIOCM_RTS | TIOCM_DTR);
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);
+}
+
+static int cyz_carrier_raised(struct tty_port *port)
+{
+ struct cyclades_port *info = container_of(port, struct cyclades_port,
+ port);
+
+ return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD;
+}
+
+static void cyz_dtr_rts(struct tty_port *port, int raise)
+{
+ struct cyclades_port *info = container_of(port, struct cyclades_port,
+ port);
+ struct cyclades_card *cinfo = info->card;
+ struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
+ int ret, channel = info->line - cinfo->first_line;
+ u32 rs;
+
+ rs = readl(&ch_ctrl->rs_control);
+ if (raise)
+ rs |= C_RS_RTS | C_RS_DTR;
+ else
+ rs &= ~(C_RS_RTS | C_RS_DTR);
+ cy_writel(&ch_ctrl->rs_control, rs);
+ ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L);
+ if (ret != 0)
+ printk(KERN_ERR "%s: retval on ttyC%d was %x\n",
+ __func__, info->line, ret);
+#ifdef CY_DEBUG_DTR
+ printk(KERN_DEBUG "%s: raising Z DTR\n", __func__);
+#endif
+}
+
+static const struct tty_port_operations cyy_port_ops = {
+ .carrier_raised = cyy_carrier_raised,
+ .dtr_rts = cyy_dtr_rts,
+ .shutdown = cy_do_close,
+};
+
+static const struct tty_port_operations cyz_port_ops = {
+ .carrier_raised = cyz_carrier_raised,
+ .dtr_rts = cyz_dtr_rts,
+ .shutdown = cy_do_close,
+};
+
/*
* ---------------------------------------------------------------------
* cy_init() and friends
@@ -4321,8 +3129,7 @@ static void cy_hangup(struct tty_struct *tty)
static int __devinit cy_init_card(struct cyclades_card *cinfo)
{
struct cyclades_port *info;
- unsigned int port;
- unsigned short chip_number;
+ unsigned int channel, port;
spin_lock_init(&cinfo->card_lock);
cinfo->intr_enabled = 0;
@@ -4334,9 +3141,9 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
return -ENOMEM;
}
- for (port = cinfo->first_line; port < cinfo->first_line + cinfo->nports;
- port++) {
- info = &cinfo->ports[port - cinfo->first_line];
+ for (channel = 0, port = cinfo->first_line; channel < cinfo->nports;
+ channel++, port++) {
+ info = &cinfo->ports[channel];
tty_port_init(&info->port);
info->magic = CYCLADES_MAGIC;
info->card = cinfo;
@@ -4346,10 +3153,19 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
info->port.close_delay = 5 * HZ / 10;
info->port.flags = STD_COM_FLAGS;
init_completion(&info->shutdown_wait);
- init_waitqueue_head(&info->delta_msr_wait);
if (cy_is_Z(cinfo)) {
+ struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS;
+ struct ZFW_CTRL *zfw_ctrl;
+
+ info->port.ops = &cyz_port_ops;
info->type = PORT_STARTECH;
+
+ zfw_ctrl = cinfo->base_addr +
+ (readl(&firm_id->zfwctrl_addr) & 0xfffff);
+ info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel];
+ info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
+
if (cinfo->hw_ver == ZO_V1)
info->xmit_fifo_size = CYZ_FIFO_SIZE;
else
@@ -4359,17 +3175,20 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
cyz_rx_restart, (unsigned long)info);
#endif
} else {
+ unsigned short chip_number;
int index = cinfo->bus_index;
+
+ info->port.ops = &cyy_port_ops;
info->type = PORT_CIRRUS;
info->xmit_fifo_size = CyMAX_CHAR_FIFO;
info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
info->cor2 = CyETC;
info->cor3 = 0x08; /* _very_ small rcv threshold */
- chip_number = (port - cinfo->first_line) / 4;
- info->chip_rev = readb(cinfo->base_addr +
- (cy_chip_offset[chip_number] << index) +
- (CyGFRCR << index));
+ chip_number = channel / CyPORTS_PER_CHIP;
+ info->u.cyy.base_addr = cinfo->base_addr +
+ (cy_chip_offset[chip_number] << index);
+ info->chip_rev = cyy_readb(info, CyGFRCR);
if (info->chip_rev >= CD1400_REV_J) {
/* It is a CD1400 rev. J or later */
@@ -5060,8 +3879,14 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
}
cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP;
} else {
+ struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS;
+ struct ZFW_CTRL __iomem *zfw_ctrl;
+
+ zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
+
cy_card[card_no].hw_ver = mailbox;
cy_card[card_no].num_chips = (unsigned int)-1;
+ cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl;
#ifdef CONFIG_CYZ_INTR
/* allocate IRQ only if board has an IRQ */
if (irq != 0 && irq != 255) {
@@ -5191,18 +4016,30 @@ static int cyclades_proc_show(struct seq_file *m, void *v)
for (j = 0; j < cy_card[i].nports; j++) {
info = &cy_card[i].ports[j];
- if (info->port.count)
+ if (info->port.count) {
+ /* XXX is the ldisc num worth this? */
+ struct tty_struct *tty;
+ struct tty_ldisc *ld;
+ int num = 0;
+ tty = tty_port_tty_get(&info->port);
+ if (tty) {
+ ld = tty_ldisc_ref(tty);
+ if (ld) {
+ num = ld->ops->num;
+ tty_ldisc_deref(ld);
+ }
+ tty_kref_put(tty);
+ }
seq_printf(m, "%3d %8lu %10lu %8lu "
- "%10lu %8lu %9lu %6ld\n", info->line,
+ "%10lu %8lu %9lu %6d\n", info->line,
(cur_jifs - info->idle_stats.in_use) /
HZ, info->idle_stats.xmit_bytes,
(cur_jifs - info->idle_stats.xmit_idle)/
HZ, info->idle_stats.recv_bytes,
(cur_jifs - info->idle_stats.recv_idle)/
HZ, info->idle_stats.overruns,
- /* FIXME: double check locking */
- (long)info->port.tty->ldisc->ops->num);
- else
+ num);
+ } else
seq_printf(m, "%3d %8lu %10lu %8lu "
"%10lu %8lu %9lu %6ld\n",
info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index a5c59fc2b0f..b19d43cd954 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -572,7 +572,7 @@ static void check_modem_status(struct esp_struct *info)
info->icount.dcd++;
if (status & UART_MSR_DCTS)
info->icount.cts++;
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&info->port.delta_msr_wait);
}
if ((info->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
@@ -927,7 +927,7 @@ static void shutdown(struct esp_struct *info)
* clear delta_msr_wait queue to avoid mem leaks: we may free the irq
* here so the queue might never be waken up
*/
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&info->port.delta_msr_wait);
wake_up_interruptible(&info->break_wait);
/* stop a DMA transfer on the port being closed */
@@ -1800,7 +1800,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file *file,
spin_unlock_irqrestore(&info->lock, flags);
while (1) {
/* FIXME: convert to new style wakeup */
- interruptible_sleep_on(&info->delta_msr_wait);
+ interruptible_sleep_on(&info->port.delta_msr_wait);
/* see if a signal did it */
if (signal_pending(current))
return -ERESTARTSYS;
@@ -2452,7 +2452,6 @@ static int __init espserial_init(void)
info->config.flow_off = flow_off;
info->config.pio_threshold = pio_threshold;
info->next_port = ports;
- init_waitqueue_head(&info->delta_msr_wait);
init_waitqueue_head(&info->break_wait);
ports = info;
printk(KERN_INFO "ttyP%d at 0x%04x (irq = %d) is an ESP ",
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index fc93e2fc7c7..1573aebd54b 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -153,7 +153,7 @@ static const struct file_operations rng_chrdev_ops = {
static struct miscdevice rng_miscdev = {
.minor = RNG_MISCDEV_MINOR,
.name = RNG_MODULE_NAME,
- .devnode = "hwrng",
+ .nodename = "hwrng",
.fops = &rng_chrdev_ops,
};
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 4f1f4cd670d..426bfdd7f3e 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -846,37 +846,53 @@ static int isicom_carrier_raised(struct tty_port *port)
return (ip->status & ISI_DCD)?1 : 0;
}
-static int isicom_open(struct tty_struct *tty, struct file *filp)
+static struct tty_port *isicom_find_port(struct tty_struct *tty)
{
struct isi_port *port;
struct isi_board *card;
unsigned int board;
- int error, line;
+ int line = tty->index;
- line = tty->index;
if (line < 0 || line > PORT_COUNT-1)
- return -ENODEV;
+ return NULL;
board = BOARD(line);
card = &isi_card[board];
if (!(card->status & FIRMWARE_LOADED))
- return -ENODEV;
+ return NULL;
/* open on a port greater than the port count for the card !!! */
if (line > ((board * 16) + card->port_count - 1))
- return -ENODEV;
+ return NULL;
port = &isi_ports[line];
if (isicom_paranoia_check(port, tty->name, "isicom_open"))
- return -ENODEV;
+ return NULL;
+ return &port->port;
+}
+
+static int isicom_open(struct tty_struct *tty, struct file *filp)
+{
+ struct isi_port *port;
+ struct isi_board *card;
+ struct tty_port *tport;
+ int error = 0;
+
+ tport = isicom_find_port(tty);
+ if (tport == NULL)
+ return -ENODEV;
+ port = container_of(tport, struct isi_port, port);
+ card = &isi_card[BOARD(tty->index)];
isicom_setup_board(card);
/* FIXME: locking on port.count etc */
port->port.count++;
tty->driver_data = port;
tty_port_tty_set(&port->port, tty);
- error = isicom_setup_port(tty);
+ /* FIXME: Locking on Initialized flag */
+ if (!test_bit(ASYNCB_INITIALIZED, &tport->flags))
+ error = isicom_setup_port(tty);
if (error == 0)
error = tty_port_block_til_ready(&port->port, tty, filp);
return error;
@@ -952,19 +968,12 @@ static void isicom_flush_buffer(struct tty_struct *tty)
tty_wakeup(tty);
}
-static void isicom_close(struct tty_struct *tty, struct file *filp)
+static void isicom_close_port(struct tty_port *port)
{
- struct isi_port *ip = tty->driver_data;
- struct tty_port *port = &ip->port;
- struct isi_board *card;
+ struct isi_port *ip = container_of(port, struct isi_port, port);
+ struct isi_board *card = ip->card;
unsigned long flags;
- BUG_ON(!ip);
-
- card = ip->card;
- if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
- return;
-
/* indicate to the card that no more data can be received
on this port */
spin_lock_irqsave(&card->card_lock, flags);
@@ -974,9 +983,19 @@ static void isicom_close(struct tty_struct *tty, struct file *filp)
}
isicom_shutdown_port(ip);
spin_unlock_irqrestore(&card->card_lock, flags);
+}
+
+static void isicom_close(struct tty_struct *tty, struct file *filp)
+{
+ struct isi_port *ip = tty->driver_data;
+ struct tty_port *port = &ip->port;
+ if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
+ return;
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
+ isicom_close_port(port);
isicom_flush_buffer(tty);
-
tty_port_close_end(port, tty);
}
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index acd8e9ed474..87c67b42bc0 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -15,6 +15,7 @@
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/ioport.h>
+#include <linux/kernel.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
@@ -715,8 +716,8 @@ static ssize_t show_algo(struct device *dev, struct device_attribute *attr, char
*/
debug0 = *(uint64_t *) soft->debug_addr;
- return sprintf(buf, "0x%lx 0x%lx\n",
- (debug0 >> 32), (debug0 & 0xffffffff));
+ return sprintf(buf, "0x%x 0x%x\n",
+ upper_32_bits(debug0), lower_32_bits(debug0));
}
static ssize_t store_algo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 0491cdf63f2..0aede1d6a9e 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -866,24 +866,25 @@ static const struct file_operations kmsg_fops = {
static const struct memdev {
const char *name;
+ mode_t mode;
const struct file_operations *fops;
struct backing_dev_info *dev_info;
} devlist[] = {
- [ 1] = { "mem", &mem_fops, &directly_mappable_cdev_bdi },
+ [1] = { "mem", 0, &mem_fops, &directly_mappable_cdev_bdi },
#ifdef CONFIG_DEVKMEM
- [ 2] = { "kmem", &kmem_fops, &directly_mappable_cdev_bdi },
+ [2] = { "kmem", 0, &kmem_fops, &directly_mappable_cdev_bdi },
#endif
- [ 3] = {"null", &null_fops, NULL },
+ [3] = { "null", 0666, &null_fops, NULL },
#ifdef CONFIG_DEVPORT
- [ 4] = { "port", &port_fops, NULL },
+ [4] = { "port", 0, &port_fops, NULL },
#endif
- [ 5] = { "zero", &zero_fops, &zero_bdi },
- [ 7] = { "full", &full_fops, NULL },
- [ 8] = { "random", &random_fops, NULL },
- [ 9] = { "urandom", &urandom_fops, NULL },
- [11] = { "kmsg", &kmsg_fops, NULL },
+ [5] = { "zero", 0666, &zero_fops, &zero_bdi },
+ [7] = { "full", 0666, &full_fops, NULL },
+ [8] = { "random", 0666, &random_fops, NULL },
+ [9] = { "urandom", 0666, &urandom_fops, NULL },
+ [11] = { "kmsg", 0, &kmsg_fops, NULL },
#ifdef CONFIG_CRASH_DUMP
- [12] = { "oldmem", &oldmem_fops, NULL },
+ [12] = { "oldmem", 0, &oldmem_fops, NULL },
#endif
};
@@ -920,6 +921,13 @@ static const struct file_operations memory_fops = {
.open = memory_open,
};
+static char *mem_devnode(struct device *dev, mode_t *mode)
+{
+ if (mode && devlist[MINOR(dev->devt)].mode)
+ *mode = devlist[MINOR(dev->devt)].mode;
+ return NULL;
+}
+
static struct class *mem_class;
static int __init chr_dev_init(void)
@@ -935,6 +943,7 @@ static int __init chr_dev_init(void)
printk("unable to get major %d for memory devs\n", MEM_MAJOR);
mem_class = class_create(THIS_MODULE, "mem");
+ mem_class->devnode = mem_devnode;
for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) {
if (!devlist[minor].name)
continue;
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 62c99fa59e2..1ee27cc2342 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -263,12 +263,14 @@ int misc_deregister(struct miscdevice *misc)
EXPORT_SYMBOL(misc_register);
EXPORT_SYMBOL(misc_deregister);
-static char *misc_nodename(struct device *dev)
+static char *misc_devnode(struct device *dev, mode_t *mode)
{
struct miscdevice *c = dev_get_drvdata(dev);
- if (c->devnode)
- return kstrdup(c->devnode, GFP_KERNEL);
+ if (mode && c->mode)
+ *mode = c->mode;
+ if (c->nodename)
+ return kstrdup(c->nodename, GFP_KERNEL);
return NULL;
}
@@ -287,7 +289,7 @@ static int __init misc_init(void)
err = -EIO;
if (register_chrdev(MISC_MAJOR,"misc",&misc_fops))
goto fail_printk;
- misc_class->nodename = misc_nodename;
+ misc_class->devnode = misc_devnode;
return 0;
fail_printk:
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index dbf8d52f31d..5e28d39b9e8 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -48,7 +48,7 @@
#include "mxser.h"
-#define MXSER_VERSION "2.0.4" /* 1.12 */
+#define MXSER_VERSION "2.0.5" /* 1.14 */
#define MXSERMAJOR 174
#define MXSER_BOARDS 4 /* Max. boards */
@@ -69,6 +69,7 @@
#define PCI_DEVICE_ID_POS104UL 0x1044
#define PCI_DEVICE_ID_CB108 0x1080
#define PCI_DEVICE_ID_CP102UF 0x1023
+#define PCI_DEVICE_ID_CP112UL 0x1120
#define PCI_DEVICE_ID_CB114 0x1142
#define PCI_DEVICE_ID_CP114UL 0x1143
#define PCI_DEVICE_ID_CB134I 0x1341
@@ -139,7 +140,8 @@ static const struct mxser_cardinfo mxser_cards[] = {
{ "CP-138U series", 8, },
{ "POS-104UL series", 4, },
{ "CP-114UL series", 4, },
-/*30*/ { "CP-102UF series", 2, }
+/*30*/ { "CP-102UF series", 2, },
+ { "CP-112UL series", 2, },
};
/* driver_data correspond to the lines in the structure above
@@ -170,6 +172,7 @@ static struct pci_device_id mxser_pcibrds[] = {
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP114UL), .driver_data = 29 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP102UF), .driver_data = 30 },
+ { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP112UL), .driver_data = 31 },
{ }
};
MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
@@ -258,7 +261,6 @@ struct mxser_port {
struct mxser_mon mon_data;
spinlock_t slock;
- wait_queue_head_t delta_msr_wait;
};
struct mxser_board {
@@ -818,7 +820,7 @@ static void mxser_check_modem_status(struct tty_struct *tty,
if (status & UART_MSR_DCTS)
port->icount.cts++;
port->mon_data.modem_status = status;
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
if (status & UART_MSR_DCD)
@@ -973,7 +975,7 @@ static void mxser_shutdown(struct tty_struct *tty)
* clear delta_msr_wait queue to avoid mem leaks: we may free the irq
* here so the queue might never be waken up
*/
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&info->port.delta_msr_wait);
/*
* Free the IRQ, if necessary
@@ -1073,34 +1075,17 @@ static void mxser_flush_buffer(struct tty_struct *tty)
}
-/*
- * This routine is called when the serial port gets closed. First, we
- * wait for the last remaining data to be sent. Then, we unlink its
- * async structure from the interrupt chain if necessary, and we free
- * that IRQ if nothing is left in the chain.
- */
-static void mxser_close(struct tty_struct *tty, struct file *filp)
+static void mxser_close_port(struct tty_struct *tty, struct tty_port *port)
{
- struct mxser_port *info = tty->driver_data;
- struct tty_port *port = &info->port;
-
+ struct mxser_port *info = container_of(port, struct mxser_port, port);
unsigned long timeout;
-
- if (tty->index == MXSER_PORTS)
- return;
- if (!info)
- return;
-
- if (tty_port_close_start(port, tty, filp) == 0)
- return;
-
/*
* Save the termios structure, since this port may have
* separate termios for callout and dialin.
*
* FIXME: Can this go ?
*/
- if (info->port.flags & ASYNC_NORMAL_ACTIVE)
+ if (port->flags & ASYNC_NORMAL_ACTIVE)
info->normal_termios = *tty->termios;
/*
* At this point we stop accepting input. To do this, we
@@ -1112,7 +1097,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
if (info->board->chip_flag)
info->IER &= ~MOXA_MUST_RECV_ISR;
- if (info->port.flags & ASYNC_INITIALIZED) {
+ if (port->flags & ASYNC_INITIALIZED) {
outb(info->IER, info->ioaddr + UART_IER);
/*
* Before we drop DTR, make sure the UART transmitter
@@ -1127,8 +1112,26 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
}
}
mxser_shutdown(tty);
- mxser_flush_buffer(tty);
+}
+
+/*
+ * This routine is called when the serial port gets closed. First, we
+ * wait for the last remaining data to be sent. Then, we unlink its
+ * async structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ */
+static void mxser_close(struct tty_struct *tty, struct file *filp)
+{
+ struct mxser_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
+
+ if (tty->index == MXSER_PORTS)
+ return;
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
+ mxser_close_port(tty, port);
+ mxser_flush_buffer(tty);
/* Right now the tty_port set is done outside of the close_end helper
as we don't yet have everyone using refcounts */
tty_port_close_end(port, tty);
@@ -1761,7 +1764,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
cnow = info->icount; /* note the counters on entry */
spin_unlock_irqrestore(&info->slock, flags);
- return wait_event_interruptible(info->delta_msr_wait,
+ return wait_event_interruptible(info->port.delta_msr_wait,
mxser_cflags_changed(info, arg, &cnow));
/*
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
@@ -1803,7 +1806,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
lock_kernel();
len = mxser_chars_in_buffer(tty);
- lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
+ lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE;
len += (lsr ? 0 : 1);
unlock_kernel();
@@ -2413,7 +2416,6 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
info->port.close_delay = 5 * HZ / 10;
info->port.closing_wait = 30 * HZ;
info->normal_termios = mxvar_sdriver->init_termios;
- init_waitqueue_head(&info->delta_msr_wait);
memset(&info->mon_data, 0, sizeof(struct mxser_mon));
info->err_shadow = 0;
spin_lock_init(&info->slock);
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index 4e28b35024e..2e50f4dfc79 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -272,7 +272,8 @@ static inline int is_continuation(unsigned char c, struct tty_struct *tty)
*
* This is a helper function that handles one output character
* (including special characters like TAB, CR, LF, etc.),
- * putting the results in the tty driver's write buffer.
+ * doing OPOST processing and putting the results in the
+ * tty driver's write buffer.
*
* Note that Linux currently ignores TABDLY, CRDLY, VTDLY, FFDLY
* and NLDLY. They simply aren't relevant in the world today.
@@ -350,8 +351,9 @@ static int do_output_char(unsigned char c, struct tty_struct *tty, int space)
* @c: character (or partial unicode symbol)
* @tty: terminal device
*
- * Perform OPOST processing. Returns -1 when the output device is
- * full and the character must be retried.
+ * Output one character with OPOST processing.
+ * Returns -1 when the output device is full and the character
+ * must be retried.
*
* Locking: output_lock to protect column state and space left
* (also, this is called from n_tty_write under the
@@ -377,8 +379,11 @@ static int process_output(unsigned char c, struct tty_struct *tty)
/**
* process_output_block - block post processor
* @tty: terminal device
- * @inbuf: user buffer
- * @nr: number of bytes
+ * @buf: character buffer
+ * @nr: number of bytes to output
+ *
+ * Output a block of characters with OPOST processing.
+ * Returns the number of characters output.
*
* This path is used to speed up block console writes, among other
* things when processing blocks of output data. It handles only
@@ -571,33 +576,23 @@ static void process_echoes(struct tty_struct *tty)
break;
default:
- if (iscntrl(op)) {
- if (L_ECHOCTL(tty)) {
- /*
- * Ensure there is enough space
- * for the whole ctrl pair.
- */
- if (space < 2) {
- no_space_left = 1;
- break;
- }
- tty_put_char(tty, '^');
- tty_put_char(tty, op ^ 0100);
- tty->column += 2;
- space -= 2;
- } else {
- if (!space) {
- no_space_left = 1;
- break;
- }
- tty_put_char(tty, op);
- space--;
- }
- }
/*
- * If above falls through, this was an
- * undefined op.
+ * If the op is not a special byte code,
+ * it is a ctrl char tagged to be echoed
+ * as "^X" (where X is the letter
+ * representing the control char).
+ * Note that we must ensure there is
+ * enough space for the whole ctrl pair.
+ *
*/
+ if (space < 2) {
+ no_space_left = 1;
+ break;
+ }
+ tty_put_char(tty, '^');
+ tty_put_char(tty, op ^ 0100);
+ tty->column += 2;
+ space -= 2;
cp += 2;
nr -= 2;
}
@@ -605,12 +600,18 @@ static void process_echoes(struct tty_struct *tty)
if (no_space_left)
break;
} else {
- int retval;
-
- retval = do_output_char(c, tty, space);
- if (retval < 0)
- break;
- space -= retval;
+ if (O_OPOST(tty) &&
+ !(test_bit(TTY_HW_COOK_OUT, &tty->flags))) {
+ int retval = do_output_char(c, tty, space);
+ if (retval < 0)
+ break;
+ space -= retval;
+ } else {
+ if (!space)
+ break;
+ tty_put_char(tty, c);
+ space -= 1;
+ }
cp += 1;
nr -= 1;
}
@@ -798,8 +799,8 @@ static void echo_char_raw(unsigned char c, struct tty_struct *tty)
* Echo user input back onto the screen. This must be called only when
* L_ECHO(tty) is true. Called from the driver receive_buf path.
*
- * This variant tags control characters to be possibly echoed as
- * as "^X" (where X is the letter representing the control char).
+ * This variant tags control characters to be echoed as "^X"
+ * (where X is the letter representing the control char).
*
* Locking: echo_lock to protect the echo buffer
*/
@@ -812,7 +813,7 @@ static void echo_char(unsigned char c, struct tty_struct *tty)
add_echo_byte(ECHO_OP_START, tty);
add_echo_byte(ECHO_OP_START, tty);
} else {
- if (iscntrl(c) && c != '\t')
+ if (L_ECHOCTL(tty) && iscntrl(c) && c != '\t')
add_echo_byte(ECHO_OP_START, tty);
add_echo_byte(c, tty);
}
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index b33d6688e91..53761cefa91 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -120,8 +120,10 @@ static int pty_write(struct tty_struct *tty, const unsigned char *buf, int c)
/* Stuff the data into the input queue of the other end */
c = tty_insert_flip_string(to, buf, c);
/* And shovel */
- tty_flip_buffer_push(to);
- tty_wakeup(tty);
+ if (c) {
+ tty_flip_buffer_push(to);
+ tty_wakeup(tty);
+ }
}
return c;
}
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 40268db02e2..64acd05f71c 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -261,7 +261,7 @@ static const struct file_operations raw_ctl_fops = {
static struct cdev raw_cdev;
-static char *raw_nodename(struct device *dev)
+static char *raw_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "raw/%s", dev_name(dev));
}
@@ -289,7 +289,7 @@ static int __init raw_init(void)
ret = PTR_ERR(raw_class);
goto error_region;
}
- raw_class->nodename = raw_nodename;
+ raw_class->devnode = raw_devnode;
device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
return 0;
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 171711acf5c..3cfa22d469e 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -343,7 +343,7 @@ static void rc_receive_exc(struct riscom_board const *bp)
if (port == NULL)
return;
- tty = port->port.tty;
+ tty = tty_port_tty_get(&port->port);
#ifdef RC_REPORT_OVERRUN
status = rc_in(bp, CD180_RCSR);
@@ -355,18 +355,18 @@ static void rc_receive_exc(struct riscom_board const *bp)
#endif
ch = rc_in(bp, CD180_RDR);
if (!status)
- return;
+ goto out;
if (status & RCSR_TOUT) {
printk(KERN_WARNING "rc%d: port %d: Receiver timeout. "
"Hardware problems ?\n",
board_No(bp), port_No(port));
- return;
+ goto out;
} else if (status & RCSR_BREAK) {
printk(KERN_INFO "rc%d: port %d: Handling break...\n",
board_No(bp), port_No(port));
flag = TTY_BREAK;
- if (port->port.flags & ASYNC_SAK)
+ if (tty && (port->port.flags & ASYNC_SAK))
do_SAK(tty);
} else if (status & RCSR_PE)
@@ -380,8 +380,12 @@ static void rc_receive_exc(struct riscom_board const *bp)
else
flag = TTY_NORMAL;
- tty_insert_flip_char(tty, ch, flag);
- tty_flip_buffer_push(tty);
+ if (tty) {
+ tty_insert_flip_char(tty, ch, flag);
+ tty_flip_buffer_push(tty);
+ }
+out:
+ tty_kref_put(tty);
}
static void rc_receive(struct riscom_board const *bp)
@@ -394,7 +398,7 @@ static void rc_receive(struct riscom_board const *bp)
if (port == NULL)
return;
- tty = port->port.tty;
+ tty = tty_port_tty_get(&port->port);
count = rc_in(bp, CD180_RDCR);
@@ -403,15 +407,14 @@ static void rc_receive(struct riscom_board const *bp)
#endif
while (count--) {
- if (tty_buffer_request_room(tty, 1) == 0) {
- printk(KERN_WARNING "rc%d: port %d: Working around "
- "flip buffer overflow.\n",
- board_No(bp), port_No(port));
- break;
- }
- tty_insert_flip_char(tty, rc_in(bp, CD180_RDR), TTY_NORMAL);
+ u8 ch = rc_in(bp, CD180_RDR);
+ if (tty)
+ tty_insert_flip_char(tty, ch, TTY_NORMAL);
+ }
+ if (tty) {
+ tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
}
- tty_flip_buffer_push(tty);
}
static void rc_transmit(struct riscom_board const *bp)
@@ -424,22 +427,22 @@ static void rc_transmit(struct riscom_board const *bp)
if (port == NULL)
return;
- tty = port->port.tty;
+ tty = tty_port_tty_get(&port->port);
if (port->IER & IER_TXEMPTY) {
/* FIFO drained */
rc_out(bp, CD180_CAR, port_No(port));
port->IER &= ~IER_TXEMPTY;
rc_out(bp, CD180_IER, port->IER);
- return;
+ goto out;
}
if ((port->xmit_cnt <= 0 && !port->break_length)
- || tty->stopped || tty->hw_stopped) {
+ || (tty && (tty->stopped || tty->hw_stopped))) {
rc_out(bp, CD180_CAR, port_No(port));
port->IER &= ~IER_TXRDY;
rc_out(bp, CD180_IER, port->IER);
- return;
+ goto out;
}
if (port->break_length) {
@@ -464,7 +467,7 @@ static void rc_transmit(struct riscom_board const *bp)
rc_out(bp, CD180_CCR, CCR_CORCHG2);
port->break_length = 0;
}
- return;
+ goto out;
}
count = CD180_NFIFO;
@@ -480,8 +483,10 @@ static void rc_transmit(struct riscom_board const *bp)
port->IER &= ~IER_TXRDY;
rc_out(bp, CD180_IER, port->IER);
}
- if (port->xmit_cnt <= port->wakeup_chars)
+ if (tty && port->xmit_cnt <= port->wakeup_chars)
tty_wakeup(tty);
+out:
+ tty_kref_put(tty);
}
static void rc_check_modem(struct riscom_board const *bp)
@@ -494,37 +499,43 @@ static void rc_check_modem(struct riscom_board const *bp)
if (port == NULL)
return;
- tty = port->port.tty;
+ tty = tty_port_tty_get(&port->port);
mcr = rc_in(bp, CD180_MCR);
if (mcr & MCR_CDCHG) {
if (rc_in(bp, CD180_MSVR) & MSVR_CD)
wake_up_interruptible(&port->port.open_wait);
- else
+ else if (tty)
tty_hangup(tty);
}
#ifdef RISCOM_BRAIN_DAMAGED_CTS
if (mcr & MCR_CTSCHG) {
if (rc_in(bp, CD180_MSVR) & MSVR_CTS) {
- tty->hw_stopped = 0;
port->IER |= IER_TXRDY;
- if (port->xmit_cnt <= port->wakeup_chars)
- tty_wakeup(tty);
+ if (tty) {
+ tty->hw_stopped = 0;
+ if (port->xmit_cnt <= port->wakeup_chars)
+ tty_wakeup(tty);
+ }
} else {
- tty->hw_stopped = 1;
+ if (tty)
+ tty->hw_stopped = 1;
port->IER &= ~IER_TXRDY;
}
rc_out(bp, CD180_IER, port->IER);
}
if (mcr & MCR_DSRCHG) {
if (rc_in(bp, CD180_MSVR) & MSVR_DSR) {
- tty->hw_stopped = 0;
port->IER |= IER_TXRDY;
- if (port->xmit_cnt <= port->wakeup_chars)
- tty_wakeup(tty);
+ if (tty) {
+ tty->hw_stopped = 0;
+ if (port->xmit_cnt <= port->wakeup_chars)
+ tty_wakeup(tty);
+ }
} else {
- tty->hw_stopped = 1;
+ if (tty)
+ tty->hw_stopped = 1;
port->IER &= ~IER_TXRDY;
}
rc_out(bp, CD180_IER, port->IER);
@@ -533,6 +544,7 @@ static void rc_check_modem(struct riscom_board const *bp)
/* Clear change bits */
rc_out(bp, CD180_MCR, 0);
+ tty_kref_put(tty);
}
/* The main interrupt processing routine */
@@ -632,9 +644,9 @@ static void rc_shutdown_board(struct riscom_board *bp)
* Setting up port characteristics.
* Must be called with disabled interrupts
*/
-static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
+static void rc_change_speed(struct tty_struct *tty, struct riscom_board *bp,
+ struct riscom_port *port)
{
- struct tty_struct *tty = port->port.tty;
unsigned long baud;
long tmp;
unsigned char cor1 = 0, cor3 = 0;
@@ -781,7 +793,8 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
}
/* Must be called with interrupts enabled */
-static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port)
+static int rc_setup_port(struct tty_struct *tty, struct riscom_board *bp,
+ struct riscom_port *port)
{
unsigned long flags;
@@ -793,11 +806,11 @@ static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port)
spin_lock_irqsave(&riscom_lock, flags);
- clear_bit(TTY_IO_ERROR, &port->port.tty->flags);
+ clear_bit(TTY_IO_ERROR, &tty->flags);
if (port->port.count == 1)
bp->count++;
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
- rc_change_speed(bp, port);
+ rc_change_speed(tty, bp, port);
port->port.flags |= ASYNC_INITIALIZED;
spin_unlock_irqrestore(&riscom_lock, flags);
@@ -898,9 +911,9 @@ static int rc_open(struct tty_struct *tty, struct file *filp)
port->port.count++;
tty->driver_data = port;
- port->port.tty = tty;
+ tty_port_tty_set(&port->port, tty);
- error = rc_setup_port(bp, port);
+ error = rc_setup_port(tty, bp, port);
if (error == 0)
error = tty_port_block_til_ready(&port->port, tty, filp);
return error;
@@ -921,20 +934,12 @@ static void rc_flush_buffer(struct tty_struct *tty)
tty_wakeup(tty);
}
-static void rc_close(struct tty_struct *tty, struct file *filp)
+static void rc_close_port(struct tty_port *port)
{
- struct riscom_port *port = tty->driver_data;
- struct riscom_board *bp;
unsigned long flags;
+ struct riscom_port *rp = container_of(port, struct riscom_port, port);
+ struct riscom_board *bp = port_Board(rp);
unsigned long timeout;
-
- if (!port || rc_paranoia_check(port, tty->name, "close"))
- return;
-
- bp = port_Board(port);
-
- if (tty_port_close_start(&port->port, tty, filp) == 0)
- return;
/*
* At this point we stop accepting input. To do this, we
@@ -944,31 +949,37 @@ static void rc_close(struct tty_struct *tty, struct file *filp)
*/
spin_lock_irqsave(&riscom_lock, flags);
- port->IER &= ~IER_RXD;
- if (port->port.flags & ASYNC_INITIALIZED) {
- port->IER &= ~IER_TXRDY;
- port->IER |= IER_TXEMPTY;
- rc_out(bp, CD180_CAR, port_No(port));
- rc_out(bp, CD180_IER, port->IER);
+ rp->IER &= ~IER_RXD;
+ if (port->flags & ASYNC_INITIALIZED) {
+ rp->IER &= ~IER_TXRDY;
+ rp->IER |= IER_TXEMPTY;
+ rc_out(bp, CD180_CAR, port_No(rp));
+ rc_out(bp, CD180_IER, rp->IER);
/*
* Before we drop DTR, make sure the UART transmitter
* has completely drained; this is especially
* important if there is a transmit FIFO!
*/
timeout = jiffies + HZ;
- while (port->IER & IER_TXEMPTY) {
+ while (rp->IER & IER_TXEMPTY) {
spin_unlock_irqrestore(&riscom_lock, flags);
- msleep_interruptible(jiffies_to_msecs(port->timeout));
+ msleep_interruptible(jiffies_to_msecs(rp->timeout));
spin_lock_irqsave(&riscom_lock, flags);
if (time_after(jiffies, timeout))
break;
}
}
- rc_shutdown_port(tty, bp, port);
- rc_flush_buffer(tty);
+ rc_shutdown_port(port->tty, bp, rp);
spin_unlock_irqrestore(&riscom_lock, flags);
+}
+
+static void rc_close(struct tty_struct *tty, struct file *filp)
+{
+ struct riscom_port *port = tty->driver_data;
- tty_port_close_end(&port->port, tty);
+ if (!port || rc_paranoia_check(port, tty->name, "close"))
+ return;
+ tty_port_close(&port->port, tty, filp);
}
static int rc_write(struct tty_struct *tty,
@@ -1170,7 +1181,7 @@ static int rc_send_break(struct tty_struct *tty, int length)
return 0;
}
-static int rc_set_serial_info(struct riscom_port *port,
+static int rc_set_serial_info(struct tty_struct *tty, struct riscom_port *port,
struct serial_struct __user *newinfo)
{
struct serial_struct tmp;
@@ -1180,17 +1191,6 @@ static int rc_set_serial_info(struct riscom_port *port,
if (copy_from_user(&tmp, newinfo, sizeof(tmp)))
return -EFAULT;
-#if 0
- if ((tmp.irq != bp->irq) ||
- (tmp.port != bp->base) ||
- (tmp.type != PORT_CIRRUS) ||
- (tmp.baud_base != (RC_OSCFREQ + CD180_TPC/2) / CD180_TPC) ||
- (tmp.custom_divisor != 0) ||
- (tmp.xmit_fifo_size != CD180_NFIFO) ||
- (tmp.flags & ~RISCOM_LEGAL_FLAGS))
- return -EINVAL;
-#endif
-
change_speed = ((port->port.flags & ASYNC_SPD_MASK) !=
(tmp.flags & ASYNC_SPD_MASK));
@@ -1212,7 +1212,7 @@ static int rc_set_serial_info(struct riscom_port *port,
unsigned long flags;
spin_lock_irqsave(&riscom_lock, flags);
- rc_change_speed(bp, port);
+ rc_change_speed(tty, bp, port);
spin_unlock_irqrestore(&riscom_lock, flags);
}
return 0;
@@ -1255,7 +1255,7 @@ static int rc_ioctl(struct tty_struct *tty, struct file *filp,
break;
case TIOCSSERIAL:
lock_kernel();
- retval = rc_set_serial_info(port, argp);
+ retval = rc_set_serial_info(tty, port, argp);
unlock_kernel();
break;
default:
@@ -1350,21 +1350,12 @@ static void rc_start(struct tty_struct *tty)
static void rc_hangup(struct tty_struct *tty)
{
struct riscom_port *port = tty->driver_data;
- struct riscom_board *bp;
- unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_hangup"))
return;
- bp = port_Board(port);
-
- rc_shutdown_port(tty, bp, port);
- spin_lock_irqsave(&port->port.lock, flags);
- port->port.count = 0;
- port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- port->port.tty = NULL;
- wake_up_interruptible(&port->port.open_wait);
- spin_unlock_irqrestore(&port->port.lock, flags);
+ rc_shutdown_port(tty, port_Board(port), port);
+ tty_port_hangup(&port->port);
}
static void rc_set_termios(struct tty_struct *tty,
@@ -1377,7 +1368,7 @@ static void rc_set_termios(struct tty_struct *tty,
return;
spin_lock_irqsave(&riscom_lock, flags);
- rc_change_speed(port_Board(port), port);
+ rc_change_speed(tty, port_Board(port), port);
spin_unlock_irqrestore(&riscom_lock, flags);
if ((old_termios->c_cflag & CRTSCTS) &&
@@ -1410,6 +1401,7 @@ static const struct tty_operations riscom_ops = {
static const struct tty_port_operations riscom_port_ops = {
.carrier_raised = carrier_raised,
+ .shutdown = rc_close_port,
};
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a3afa0c387c..ea18a129b0b 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1184,6 +1184,7 @@ int tty_init_termios(struct tty_struct *tty)
tty->termios->c_ospeed = tty_termios_baud_rate(tty->termios);
return 0;
}
+EXPORT_SYMBOL_GPL(tty_init_termios);
/**
* tty_driver_install_tty() - install a tty entry in the driver
@@ -1386,10 +1387,14 @@ EXPORT_SYMBOL(tty_shutdown);
* tty_mutex - sometimes only
* takes the file list lock internally when working on the list
* of ttys that the driver keeps.
+ *
+ * This method gets called from a work queue so that the driver private
+ * shutdown ops can sleep (needed for USB at least)
*/
-static void release_one_tty(struct kref *kref)
+static void release_one_tty(struct work_struct *work)
{
- struct tty_struct *tty = container_of(kref, struct tty_struct, kref);
+ struct tty_struct *tty =
+ container_of(work, struct tty_struct, hangup_work);
struct tty_driver *driver = tty->driver;
if (tty->ops->shutdown)
@@ -1407,6 +1412,15 @@ static void release_one_tty(struct kref *kref)
free_tty_struct(tty);
}
+static void queue_release_one_tty(struct kref *kref)
+{
+ struct tty_struct *tty = container_of(kref, struct tty_struct, kref);
+ /* The hangup queue is now free so we can reuse it rather than
+ waste a chunk of memory for each port */
+ INIT_WORK(&tty->hangup_work, release_one_tty);
+ schedule_work(&tty->hangup_work);
+}
+
/**
* tty_kref_put - release a tty kref
* @tty: tty device
@@ -1418,7 +1432,7 @@ static void release_one_tty(struct kref *kref)
void tty_kref_put(struct tty_struct *tty)
{
if (tty)
- kref_put(&tty->kref, release_one_tty);
+ kref_put(&tty->kref, queue_release_one_tty);
}
EXPORT_SYMBOL(tty_kref_put);
@@ -2085,7 +2099,7 @@ static int tioccons(struct file *file)
* the generic functionality existed. This piece of history is preserved
* in the expected tty API of posix OS's.
*
- * Locking: none, the open fle handle ensures it won't go away.
+ * Locking: none, the open file handle ensures it won't go away.
*/
static int fionbio(struct file *file, int __user *p)
@@ -3056,11 +3070,22 @@ void __init console_init(void)
}
}
+static char *tty_devnode(struct device *dev, mode_t *mode)
+{
+ if (!mode)
+ return NULL;
+ if (dev->devt == MKDEV(TTYAUX_MAJOR, 0) ||
+ dev->devt == MKDEV(TTYAUX_MAJOR, 2))
+ *mode = 0666;
+ return NULL;
+}
+
static int __init tty_class_init(void)
{
tty_class = class_create(THIS_MODULE, "tty");
if (IS_ERR(tty_class))
return PTR_ERR(tty_class);
+ tty_class->devnode = tty_devnode;
return 0;
}
diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c
index ad6ba4ed280..8e67d5c642a 100644
--- a/drivers/char/tty_ioctl.c
+++ b/drivers/char/tty_ioctl.c
@@ -393,9 +393,7 @@ void tty_termios_encode_baud_rate(struct ktermios *termios,
termios->c_cflag |= (BOTHER << IBSHIFT);
#else
if (ifound == -1 || ofound == -1) {
- static int warned;
- if (!warned++)
- printk(KERN_WARNING "tty: Unable to return correct "
+ printk_once(KERN_WARNING "tty: Unable to return correct "
"speed data as your architecture needs updating.\n");
}
#endif
diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c
index e48af9f7921..aafdbaebc16 100644
--- a/drivers/char/tty_ldisc.c
+++ b/drivers/char/tty_ldisc.c
@@ -145,48 +145,33 @@ int tty_unregister_ldisc(int disc)
}
EXPORT_SYMBOL(tty_unregister_ldisc);
-
-/**
- * tty_ldisc_try_get - try and reference an ldisc
- * @disc: ldisc number
- *
- * Attempt to open and lock a line discipline into place. Return
- * the line discipline refcounted or an error.
- */
-
-static struct tty_ldisc *tty_ldisc_try_get(int disc)
+static struct tty_ldisc_ops *get_ldops(int disc)
{
unsigned long flags;
- struct tty_ldisc *ld;
- struct tty_ldisc_ops *ldops;
- int err = -EINVAL;
-
- ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL);
- if (ld == NULL)
- return ERR_PTR(-ENOMEM);
+ struct tty_ldisc_ops *ldops, *ret;
spin_lock_irqsave(&tty_ldisc_lock, flags);
- ld->ops = NULL;
+ ret = ERR_PTR(-EINVAL);
ldops = tty_ldiscs[disc];
- /* Check the entry is defined */
if (ldops) {
- /* If the module is being unloaded we can't use it */
- if (!try_module_get(ldops->owner))
- err = -EAGAIN;
- else {
- /* lock it */
+ ret = ERR_PTR(-EAGAIN);
+ if (try_module_get(ldops->owner)) {
ldops->refcount++;
- ld->ops = ldops;
- atomic_set(&ld->users, 1);
- err = 0;
+ ret = ldops;
}
}
spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- if (err) {
- kfree(ld);
- return ERR_PTR(err);
- }
- return ld;
+ return ret;
+}
+
+static void put_ldops(struct tty_ldisc_ops *ldops)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&tty_ldisc_lock, flags);
+ ldops->refcount--;
+ module_put(ldops->owner);
+ spin_unlock_irqrestore(&tty_ldisc_lock, flags);
}
/**
@@ -205,14 +190,31 @@ static struct tty_ldisc *tty_ldisc_try_get(int disc)
static struct tty_ldisc *tty_ldisc_get(int disc)
{
struct tty_ldisc *ld;
+ struct tty_ldisc_ops *ldops;
if (disc < N_TTY || disc >= NR_LDISCS)
return ERR_PTR(-EINVAL);
- ld = tty_ldisc_try_get(disc);
- if (IS_ERR(ld)) {
+
+ /*
+ * Get the ldisc ops - we may need to request them to be loaded
+ * dynamically and try again.
+ */
+ ldops = get_ldops(disc);
+ if (IS_ERR(ldops)) {
request_module("tty-ldisc-%d", disc);
- ld = tty_ldisc_try_get(disc);
+ ldops = get_ldops(disc);
+ if (IS_ERR(ldops))
+ return ERR_CAST(ldops);
}
+
+ ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL);
+ if (ld == NULL) {
+ put_ldops(ldops);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ ld->ops = ldops;
+ atomic_set(&ld->users, 1);
return ld;
}
@@ -234,13 +236,13 @@ static void tty_ldiscs_seq_stop(struct seq_file *m, void *v)
static int tty_ldiscs_seq_show(struct seq_file *m, void *v)
{
int i = *(loff_t *)v;
- struct tty_ldisc *ld;
+ struct tty_ldisc_ops *ldops;
- ld = tty_ldisc_try_get(i);
- if (IS_ERR(ld))
+ ldops = get_ldops(i);
+ if (IS_ERR(ldops))
return 0;
- seq_printf(m, "%-10s %2d\n", ld->ops->name ? ld->ops->name : "???", i);
- put_ldisc(ld);
+ seq_printf(m, "%-10s %2d\n", ldops->name ? ldops->name : "???", i);
+ put_ldops(ldops);
return 0;
}
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index 9769b1149f7..a4bbb28f10b 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -23,6 +23,7 @@ void tty_port_init(struct tty_port *port)
memset(port, 0, sizeof(*port));
init_waitqueue_head(&port->open_wait);
init_waitqueue_head(&port->close_wait);
+ init_waitqueue_head(&port->delta_msr_wait);
mutex_init(&port->mutex);
spin_lock_init(&port->lock);
port->close_delay = (50 * HZ) / 100;
@@ -96,6 +97,14 @@ void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty)
}
EXPORT_SYMBOL(tty_port_tty_set);
+static void tty_port_shutdown(struct tty_port *port)
+{
+ if (port->ops->shutdown &&
+ test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags))
+ port->ops->shutdown(port);
+
+}
+
/**
* tty_port_hangup - hangup helper
* @port: tty port
@@ -116,6 +125,8 @@ void tty_port_hangup(struct tty_port *port)
port->tty = NULL;
spin_unlock_irqrestore(&port->lock, flags);
wake_up_interruptible(&port->open_wait);
+ wake_up_interruptible(&port->delta_msr_wait);
+ tty_port_shutdown(port);
}
EXPORT_SYMBOL(tty_port_hangup);
@@ -296,15 +307,17 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f
if (port->count) {
spin_unlock_irqrestore(&port->lock, flags);
+ if (port->ops->drop)
+ port->ops->drop(port);
return 0;
}
- port->flags |= ASYNC_CLOSING;
+ set_bit(ASYNCB_CLOSING, &port->flags);
tty->closing = 1;
spin_unlock_irqrestore(&port->lock, flags);
/* Don't block on a stalled port, just pull the chain */
if (tty->flow_stopped)
tty_driver_flush_buffer(tty);
- if (port->flags & ASYNC_INITIALIZED &&
+ if (test_bit(ASYNCB_INITIALIZED, &port->flags) &&
port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, port->closing_wait);
if (port->drain_delay) {
@@ -318,6 +331,9 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f
timeout = 2 * HZ;
schedule_timeout_interruptible(timeout);
}
+ /* Don't call port->drop for the last reference. Callers will want
+ to drop the last active reference in ->shutdown() or the tty
+ shutdown path */
return 1;
}
EXPORT_SYMBOL(tty_port_close_start);
@@ -348,3 +364,14 @@ void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)
spin_unlock_irqrestore(&port->lock, flags);
}
EXPORT_SYMBOL(tty_port_close_end);
+
+void tty_port_close(struct tty_port *port, struct tty_struct *tty,
+ struct file *filp)
+{
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
+ tty_port_shutdown(port);
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
+}
+EXPORT_SYMBOL(tty_port_close);
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 6aa88f50b03..0c80c68cd04 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -252,7 +252,6 @@ static void notify_update(struct vc_data *vc)
struct vt_notifier_param param = { .vc = vc };
atomic_notifier_call_chain(&vt_notifier_list, VT_UPDATE, &param);
}
-
/*
* Low-Level Functions
*/
@@ -935,6 +934,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
if (CON_IS_VISIBLE(vc))
update_screen(vc);
+ vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
return err;
}
@@ -2129,11 +2129,7 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
currcons = vc->vc_num;
if (!vc_cons_allocated(currcons)) {
/* could this happen? */
- static int error = 0;
- if (!error) {
- error = 1;
- printk("con_write: tty %d not allocated\n", currcons+1);
- }
+ printk_once("con_write: tty %d not allocated\n", currcons+1);
release_console_sem();
return 0;
}
@@ -2910,6 +2906,9 @@ static const struct tty_operations con_ops = {
.flush_chars = con_flush_chars,
.chars_in_buffer = con_chars_in_buffer,
.ioctl = vt_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = vt_compat_ioctl,
+#endif
.stop = con_stop,
.start = con_start,
.throttle = con_throttle,
@@ -2955,7 +2954,6 @@ int __init vty_init(const struct file_operations *console_fops)
}
#ifndef VT_SINGLE_DRIVER
-#include <linux/device.h>
static struct class *vtconsole_class;
@@ -3638,6 +3636,7 @@ void do_blank_screen(int entering_gfx)
blank_state = blank_vesa_wait;
mod_timer(&console_timer, jiffies + vesa_off_interval);
}
+ vt_event_post(VT_EVENT_BLANK, vc->vc_num, vc->vc_num);
}
EXPORT_SYMBOL(do_blank_screen);
@@ -3682,6 +3681,7 @@ void do_unblank_screen(int leaving_gfx)
console_blank_hook(0);
set_palette(vc);
set_cursor(vc);
+ vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num);
}
EXPORT_SYMBOL(do_unblank_screen);
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 95189f288f8..29c651ab0d7 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -16,6 +16,8 @@
#include <linux/tty.h>
#include <linux/timer.h>
#include <linux/kernel.h>
+#include <linux/compat.h>
+#include <linux/module.h>
#include <linux/kd.h>
#include <linux/vt.h>
#include <linux/string.h>
@@ -62,6 +64,133 @@ extern struct tty_driver *console_driver;
static void complete_change_console(struct vc_data *vc);
/*
+ * User space VT_EVENT handlers
+ */
+
+struct vt_event_wait {
+ struct list_head list;
+ struct vt_event event;
+ int done;
+};
+
+static LIST_HEAD(vt_events);
+static DEFINE_SPINLOCK(vt_event_lock);
+static DECLARE_WAIT_QUEUE_HEAD(vt_event_waitqueue);
+
+/**
+ * vt_event_post
+ * @event: the event that occurred
+ * @old: old console
+ * @new: new console
+ *
+ * Post an VT event to interested VT handlers
+ */
+
+void vt_event_post(unsigned int event, unsigned int old, unsigned int new)
+{
+ struct list_head *pos, *head;
+ unsigned long flags;
+ int wake = 0;
+
+ spin_lock_irqsave(&vt_event_lock, flags);
+ head = &vt_events;
+
+ list_for_each(pos, head) {
+ struct vt_event_wait *ve = list_entry(pos,
+ struct vt_event_wait, list);
+ if (!(ve->event.event & event))
+ continue;
+ ve->event.event = event;
+ /* kernel view is consoles 0..n-1, user space view is
+ console 1..n with 0 meaning current, so we must bias */
+ ve->event.old = old + 1;
+ ve->event.new = new + 1;
+ wake = 1;
+ ve->done = 1;
+ }
+ spin_unlock_irqrestore(&vt_event_lock, flags);
+ if (wake)
+ wake_up_interruptible(&vt_event_waitqueue);
+}
+
+/**
+ * vt_event_wait - wait for an event
+ * @vw: our event
+ *
+ * Waits for an event to occur which completes our vt_event_wait
+ * structure. On return the structure has wv->done set to 1 for success
+ * or 0 if some event such as a signal ended the wait.
+ */
+
+static void vt_event_wait(struct vt_event_wait *vw)
+{
+ unsigned long flags;
+ /* Prepare the event */
+ INIT_LIST_HEAD(&vw->list);
+ vw->done = 0;
+ /* Queue our event */
+ spin_lock_irqsave(&vt_event_lock, flags);
+ list_add(&vw->list, &vt_events);
+ spin_unlock_irqrestore(&vt_event_lock, flags);
+ /* Wait for it to pass */
+ wait_event_interruptible(vt_event_waitqueue, vw->done);
+ /* Dequeue it */
+ spin_lock_irqsave(&vt_event_lock, flags);
+ list_del(&vw->list);
+ spin_unlock_irqrestore(&vt_event_lock, flags);
+}
+
+/**
+ * vt_event_wait_ioctl - event ioctl handler
+ * @arg: argument to ioctl
+ *
+ * Implement the VT_WAITEVENT ioctl using the VT event interface
+ */
+
+static int vt_event_wait_ioctl(struct vt_event __user *event)
+{
+ struct vt_event_wait vw;
+
+ if (copy_from_user(&vw.event, event, sizeof(struct vt_event)))
+ return -EFAULT;
+ /* Highest supported event for now */
+ if (vw.event.event & ~VT_MAX_EVENT)
+ return -EINVAL;
+
+ vt_event_wait(&vw);
+ /* If it occurred report it */
+ if (vw.done) {
+ if (copy_to_user(event, &vw.event, sizeof(struct vt_event)))
+ return -EFAULT;
+ return 0;
+ }
+ return -EINTR;
+}
+
+/**
+ * vt_waitactive - active console wait
+ * @event: event code
+ * @n: new console
+ *
+ * Helper for event waits. Used to implement the legacy
+ * event waiting ioctls in terms of events
+ */
+
+int vt_waitactive(int n)
+{
+ struct vt_event_wait vw;
+ do {
+ if (n == fg_console + 1)
+ break;
+ vw.event.event = VT_EVENT_SWITCH;
+ vt_event_wait(&vw);
+ if (vw.done == 0)
+ return -EINTR;
+ } while (vw.event.new != n);
+ return 0;
+}
+
+/*
* these are the valid i/o ports we're allowed to change. they map all the
* video ports
*/
@@ -360,6 +489,8 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_
return 0;
}
+
+
/*
* We handle the console-specific ioctl's here. We allow the
* capability to modify any console, not just the fg_console.
@@ -842,6 +973,41 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
}
break;
+ case VT_SETACTIVATE:
+ {
+ struct vt_setactivate vsa;
+
+ if (!perm)
+ goto eperm;
+
+ if (copy_from_user(&vsa, (struct vt_setactivate __user *)arg,
+ sizeof(struct vt_setactivate)))
+ return -EFAULT;
+ if (vsa.console == 0 || vsa.console > MAX_NR_CONSOLES)
+ ret = -ENXIO;
+ else {
+ vsa.console--;
+ acquire_console_sem();
+ ret = vc_allocate(vsa.console);
+ if (ret == 0) {
+ struct vc_data *nvc;
+ /* This is safe providing we don't drop the
+ console sem between vc_allocate and
+ finishing referencing nvc */
+ nvc = vc_cons[vsa.console].d;
+ nvc->vt_mode = vsa.mode;
+ nvc->vt_mode.frsig = 0;
+ put_pid(nvc->vt_pid);
+ nvc->vt_pid = get_pid(task_pid(current));
+ }
+ release_console_sem();
+ if (ret)
+ break;
+ /* Commence switch and lock */
+ set_console(arg);
+ }
+ }
+
/*
* wait until the specified VT has been activated
*/
@@ -851,7 +1017,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
if (arg == 0 || arg > MAX_NR_CONSOLES)
ret = -ENXIO;
else
- ret = vt_waitactive(arg - 1);
+ ret = vt_waitactive(arg);
break;
/*
@@ -1159,6 +1325,9 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
ret = put_user(vc->vc_hi_font_mask,
(unsigned short __user *)arg);
break;
+ case VT_WAITEVENT:
+ ret = vt_event_wait_ioctl((struct vt_event __user *)arg);
+ break;
default:
ret = -ENOIOCTLCMD;
}
@@ -1170,54 +1339,6 @@ eperm:
goto out;
}
-/*
- * Sometimes we want to wait until a particular VT has been activated. We
- * do it in a very simple manner. Everybody waits on a single queue and
- * get woken up at once. Those that are satisfied go on with their business,
- * while those not ready go back to sleep. Seems overkill to add a wait
- * to each vt just for this - usually this does nothing!
- */
-static DECLARE_WAIT_QUEUE_HEAD(vt_activate_queue);
-
-/*
- * Sleeps until a vt is activated, or the task is interrupted. Returns
- * 0 if activation, -EINTR if interrupted by a signal handler.
- */
-int vt_waitactive(int vt)
-{
- int retval;
- DECLARE_WAITQUEUE(wait, current);
-
- add_wait_queue(&vt_activate_queue, &wait);
- for (;;) {
- retval = 0;
-
- /*
- * Synchronize with redraw_screen(). By acquiring the console
- * semaphore we make sure that the console switch is completed
- * before we return. If we didn't wait for the semaphore, we
- * could return at a point where fg_console has already been
- * updated, but the console switch hasn't been completed.
- */
- acquire_console_sem();
- set_current_state(TASK_INTERRUPTIBLE);
- if (vt == fg_console) {
- release_console_sem();
- break;
- }
- release_console_sem();
- retval = -ERESTARTNOHAND;
- if (signal_pending(current))
- break;
- schedule();
- }
- remove_wait_queue(&vt_activate_queue, &wait);
- __set_current_state(TASK_RUNNING);
- return retval;
-}
-
-#define vt_wake_waitactive() wake_up(&vt_activate_queue)
-
void reset_vc(struct vc_data *vc)
{
vc->vc_mode = KD_TEXT;
@@ -1256,12 +1377,216 @@ void vc_SAK(struct work_struct *work)
release_console_sem();
}
+#ifdef CONFIG_COMPAT
+
+struct compat_consolefontdesc {
+ unsigned short charcount; /* characters in font (256 or 512) */
+ unsigned short charheight; /* scan lines per character (1-32) */
+ compat_caddr_t chardata; /* font data in expanded form */
+};
+
+static inline int
+compat_fontx_ioctl(int cmd, struct compat_consolefontdesc __user *user_cfd,
+ int perm, struct console_font_op *op)
+{
+ struct compat_consolefontdesc cfdarg;
+ int i;
+
+ if (copy_from_user(&cfdarg, user_cfd, sizeof(struct compat_consolefontdesc)))
+ return -EFAULT;
+
+ switch (cmd) {
+ case PIO_FONTX:
+ if (!perm)
+ return -EPERM;
+ op->op = KD_FONT_OP_SET;
+ op->flags = KD_FONT_FLAG_OLD;
+ op->width = 8;
+ op->height = cfdarg.charheight;
+ op->charcount = cfdarg.charcount;
+ op->data = compat_ptr(cfdarg.chardata);
+ return con_font_op(vc_cons[fg_console].d, op);
+ case GIO_FONTX:
+ op->op = KD_FONT_OP_GET;
+ op->flags = KD_FONT_FLAG_OLD;
+ op->width = 8;
+ op->height = cfdarg.charheight;
+ op->charcount = cfdarg.charcount;
+ op->data = compat_ptr(cfdarg.chardata);
+ i = con_font_op(vc_cons[fg_console].d, op);
+ if (i)
+ return i;
+ cfdarg.charheight = op->height;
+ cfdarg.charcount = op->charcount;
+ if (copy_to_user(user_cfd, &cfdarg, sizeof(struct compat_consolefontdesc)))
+ return -EFAULT;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+struct compat_console_font_op {
+ compat_uint_t op; /* operation code KD_FONT_OP_* */
+ compat_uint_t flags; /* KD_FONT_FLAG_* */
+ compat_uint_t width, height; /* font size */
+ compat_uint_t charcount;
+ compat_caddr_t data; /* font data with height fixed to 32 */
+};
+
+static inline int
+compat_kdfontop_ioctl(struct compat_console_font_op __user *fontop,
+ int perm, struct console_font_op *op, struct vc_data *vc)
+{
+ int i;
+
+ if (copy_from_user(op, fontop, sizeof(struct compat_console_font_op)))
+ return -EFAULT;
+ if (!perm && op->op != KD_FONT_OP_GET)
+ return -EPERM;
+ op->data = compat_ptr(((struct compat_console_font_op *)op)->data);
+ op->flags |= KD_FONT_FLAG_OLD;
+ i = con_font_op(vc, op);
+ if (i)
+ return i;
+ ((struct compat_console_font_op *)op)->data = (unsigned long)op->data;
+ if (copy_to_user(fontop, op, sizeof(struct compat_console_font_op)))
+ return -EFAULT;
+ return 0;
+}
+
+struct compat_unimapdesc {
+ unsigned short entry_ct;
+ compat_caddr_t entries;
+};
+
+static inline int
+compat_unimap_ioctl(unsigned int cmd, struct compat_unimapdesc __user *user_ud,
+ int perm, struct vc_data *vc)
+{
+ struct compat_unimapdesc tmp;
+ struct unipair __user *tmp_entries;
+
+ if (copy_from_user(&tmp, user_ud, sizeof tmp))
+ return -EFAULT;
+ tmp_entries = compat_ptr(tmp.entries);
+ if (tmp_entries)
+ if (!access_ok(VERIFY_WRITE, tmp_entries,
+ tmp.entry_ct*sizeof(struct unipair)))
+ return -EFAULT;
+ switch (cmd) {
+ case PIO_UNIMAP:
+ if (!perm)
+ return -EPERM;
+ return con_set_unimap(vc, tmp.entry_ct, tmp_entries);
+ case GIO_UNIMAP:
+ if (!perm && fg_console != vc->vc_num)
+ return -EPERM;
+ return con_get_unimap(vc, tmp.entry_ct, &(user_ud->entry_ct), tmp_entries);
+ }
+ return 0;
+}
+
+long vt_compat_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct vc_data *vc = tty->driver_data;
+ struct console_font_op op; /* used in multiple places here */
+ struct kbd_struct *kbd;
+ unsigned int console;
+ void __user *up = (void __user *)arg;
+ int perm;
+ int ret = 0;
+
+ console = vc->vc_num;
+
+ lock_kernel();
+
+ if (!vc_cons_allocated(console)) { /* impossible? */
+ ret = -ENOIOCTLCMD;
+ goto out;
+ }
+
+ /*
+ * To have permissions to do most of the vt ioctls, we either have
+ * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG.
+ */
+ perm = 0;
+ if (current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG))
+ perm = 1;
+
+ kbd = kbd_table + console;
+ switch (cmd) {
+ /*
+ * these need special handlers for incompatible data structures
+ */
+ case PIO_FONTX:
+ case GIO_FONTX:
+ ret = compat_fontx_ioctl(cmd, up, perm, &op);
+ break;
+
+ case KDFONTOP:
+ ret = compat_kdfontop_ioctl(up, perm, &op, vc);
+ break;
+
+ case PIO_UNIMAP:
+ case GIO_UNIMAP:
+ ret = do_unimap_ioctl(cmd, up, perm, vc);
+ break;
+
+ /*
+ * all these treat 'arg' as an integer
+ */
+ case KIOCSOUND:
+ case KDMKTONE:
+#ifdef CONFIG_X86
+ case KDADDIO:
+ case KDDELIO:
+#endif
+ case KDSETMODE:
+ case KDMAPDISP:
+ case KDUNMAPDISP:
+ case KDSKBMODE:
+ case KDSKBMETA:
+ case KDSKBLED:
+ case KDSETLED:
+ case KDSIGACCEPT:
+ case VT_ACTIVATE:
+ case VT_WAITACTIVE:
+ case VT_RELDISP:
+ case VT_DISALLOCATE:
+ case VT_RESIZE:
+ case VT_RESIZEX:
+ goto fallback;
+
+ /*
+ * the rest has a compatible data structure behind arg,
+ * but we have to convert it to a proper 64 bit pointer.
+ */
+ default:
+ arg = (unsigned long)compat_ptr(arg);
+ goto fallback;
+ }
+out:
+ unlock_kernel();
+ return ret;
+
+fallback:
+ unlock_kernel();
+ return vt_ioctl(tty, file, cmd, arg);
+}
+
+
+#endif /* CONFIG_COMPAT */
+
+
/*
- * Performs the back end of a vt switch
+ * Performs the back end of a vt switch. Called under the console
+ * semaphore.
*/
static void complete_change_console(struct vc_data *vc)
{
unsigned char old_vc_mode;
+ int old = fg_console;
last_console = fg_console;
@@ -1325,7 +1650,7 @@ static void complete_change_console(struct vc_data *vc)
/*
* Wake anyone waiting for their VT to activate
*/
- vt_wake_waitactive();
+ vt_event_post(VT_EVENT_SWITCH, old, vc->vc_num);
return;
}
@@ -1398,3 +1723,58 @@ void change_console(struct vc_data *new_vc)
complete_change_console(new_vc);
}
+
+/* Perform a kernel triggered VT switch for suspend/resume */
+
+static int disable_vt_switch;
+
+int vt_move_to_console(unsigned int vt, int alloc)
+{
+ int prev;
+
+ acquire_console_sem();
+ /* Graphics mode - up to X */
+ if (disable_vt_switch) {
+ release_console_sem();
+ return 0;
+ }
+ prev = fg_console;
+
+ if (alloc && vc_allocate(vt)) {
+ /* we can't have a free VC for now. Too bad,
+ * we don't want to mess the screen for now. */
+ release_console_sem();
+ return -ENOSPC;
+ }
+
+ if (set_console(vt)) {
+ /*
+ * We're unable to switch to the SUSPEND_CONSOLE.
+ * Let the calling function know so it can decide
+ * what to do.
+ */
+ release_console_sem();
+ return -EIO;
+ }
+ release_console_sem();
+ if (vt_waitactive(vt + 1)) {
+ pr_debug("Suspend: Can't switch VCs.");
+ return -EINTR;
+ }
+ return prev;
+}
+
+/*
+ * Normally during a suspend, we allocate a new console and switch to it.
+ * When we resume, we switch back to the original console. This switch
+ * can be slow, so on systems where the framebuffer can handle restoration
+ * of video registers anyways, there's little point in doing the console
+ * switch. This function allows you to disable it by passing it '0'.
+ */
+void pm_set_vt_switch(int do_switch)
+{
+ acquire_console_sem();
+ disable_vt_switch = !do_switch;
+ release_console_sem();
+}
+EXPORT_SYMBOL(pm_set_vt_switch);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 13:18:03 +0000