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Commit ebdb5135 authored by Jiri Slaby's avatar Jiri Slaby Committed by Live-CD User
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cyclades: overall cleanup 

- remove changelog from the file. we don't care about ancient
  history
- update copyright year
- update version
- constify some stuff
- empty lines removal
- unused variables and macros removal
- remove some asm/ includes, they are sucked by linux/ variants
Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 23342262
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drivers/char/cyclades.c
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...@@ -11,7 +11,7 @@ ...@@ -11,7 +11,7 @@
* Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
* Modified and maintained by Marcio Saito <marcio@cyclades.com>. * 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 * Much of the design and some of the code came from serial.c
* which was copyright (C) 1991, 1992 Linus Torvalds. It was * which was copyright (C) 1991, 1992 Linus Torvalds. It was
...@@ -19,577 +19,9 @@ ...@@ -19,577 +19,9 @@
* and then fixed as suggested by Michael K. Johnson 12/12/92. * and then fixed as suggested by Michael K. Johnson 12/12/92.
* Converted to pci probing and cleaned up by Jiri Slaby. * 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 /* 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 in the definition below. No other change is necessary to support up to
...@@ -648,9 +80,7 @@ ...@@ -648,9 +80,7 @@
#include <linux/firmware.h> #include <linux/firmware.h>
#include <linux/device.h> #include <linux/device.h>
#include <asm/system.h>
#include <linux/io.h> #include <linux/io.h>
#include <asm/irq.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
#include <linux/kernel.h> #include <linux/kernel.h>
...@@ -666,7 +96,6 @@ static void cy_send_xchar(struct tty_struct *tty, char ch); ...@@ -666,7 +96,6 @@ static void cy_send_xchar(struct tty_struct *tty, char ch);
#ifndef SERIAL_XMIT_SIZE #ifndef SERIAL_XMIT_SIZE
#define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096))
#endif #endif
#define WAKEUP_CHARS 256
#define STD_COM_FLAGS (0) #define STD_COM_FLAGS (0)
...@@ -756,25 +185,25 @@ static int cy_next_channel; /* next minor available */ ...@@ -756,25 +185,25 @@ static int cy_next_channel; /* next minor available */
* HI VHI * HI VHI
* 20 * 20
*/ */
static int baud_table[] = { static const int baud_table[] = {
0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
230400, 0 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 */ /* value => 00 01 02 03 04 */
/* divide by 8 32 128 512 2048 */ /* divide by 8 32 128 512 2048 */
0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 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, 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 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 */ /* value => 00 01 02 03 04 */
/* divide by 8 32 128 512 2048 */ /* divide by 8 32 128 512 2048 */
0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
...@@ -782,13 +211,13 @@ static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ ...@@ -782,13 +211,13 @@ static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
0x00 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, 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
0x21 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, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
0x07 0x07
...@@ -805,7 +234,7 @@ static char baud_cor3[] = { /* receive threshold */ ...@@ -805,7 +234,7 @@ static char baud_cor3[] = { /* receive threshold */
* cables. * 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, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
0x0a 0x0a
...@@ -827,7 +256,7 @@ static const unsigned int cy_chip_offset[] = { 0x0000, ...@@ -827,7 +256,7 @@ static const unsigned int cy_chip_offset[] = { 0x0000,
/* PCI related definitions */ /* PCI related definitions */
#ifdef CONFIG_PCI #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 < 1Mb */
{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) },
/* PCI > 1Mb */ /* PCI > 1Mb */
...@@ -893,7 +322,7 @@ static inline bool cyz_is_loaded(struct cyclades_card *card) ...@@ -893,7 +322,7 @@ static inline bool cyz_is_loaded(struct cyclades_card *card)
} }
static inline int serial_paranoia_check(struct cyclades_port *info, 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 #ifdef SERIAL_PARANOIA_CHECK
if (!info) { if (!info) {
...@@ -909,7 +338,7 @@ static inline int serial_paranoia_check(struct cyclades_port *info, ...@@ -909,7 +338,7 @@ static inline int serial_paranoia_check(struct cyclades_port *info,
} }
#endif #endif
return 0; return 0;
} /* serial_paranoia_check */ }
/***********************************************************/ /***********************************************************/
/********* Start of block of Cyclom-Y specific code ********/ /********* Start of block of Cyclom-Y specific code ********/
...@@ -3030,11 +2459,9 @@ cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, ...@@ -3030,11 +2459,9 @@ cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty,
struct serial_struct __user *new_info) struct serial_struct __user *new_info)
{ {
struct serial_struct new_serial; struct serial_struct new_serial;
struct cyclades_port old_info;
if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
return -EFAULT; return -EFAULT;
old_info = *info;
if (!capable(CAP_SYS_ADMIN)) { if (!capable(CAP_SYS_ADMIN)) {
if (new_serial.close_delay != info->port.close_delay || if (new_serial.close_delay != info->port.close_delay ||
...@@ -3376,7 +2803,6 @@ static int cy_break(struct tty_struct *tty, int break_state) ...@@ -3376,7 +2803,6 @@ static int cy_break(struct tty_struct *tty, int break_state)
static int get_mon_info(struct cyclades_port *info, static int get_mon_info(struct cyclades_port *info,
struct cyclades_monitor __user *mon) struct cyclades_monitor __user *mon)
{ {
if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor)))
return -EFAULT; return -EFAULT;
info->mon.int_count = 0; info->mon.int_count = 0;
......
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