3 #undef Z_EXT_CHARS_IN_BUFFER
5 "$Revision: 2.3.2.20 $$Date: 2004/02/25 18:14:16 $";
8 * linux/drivers/char/cyclades.c
10 * This file contains the driver for the Cyclades async multiport
13 * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
14 * Modified and maintained by Marcio Saito <marcio@cyclades.com>.
15 * Currently maintained by Cyclades team <async@cyclades.com>.
17 * For Technical support and installation problems, please send e-mail
18 * to support@cyclades.com.
20 * Much of the design and some of the code came from serial.c
21 * which was copyright (C) 1991, 1992 Linus Torvalds. It was
22 * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92,
23 * and then fixed as suggested by Michael K. Johnson 12/12/92.
25 * This version supports shared IRQ's (only for PCI boards).
27 * $Log: cyclades.c,v $
28 * Prevent users from opening non-existing Z ports.
30 * Revision 2.3.2.8 2000/07/06 18:14:16 ivan
31 * Fixed the PCI detection function to work properly on Alpha systems.
32 * Implemented support for TIOCSERGETLSR ioctl.
33 * Implemented full support for non-standard baud rates.
35 * Revision 2.3.2.7 2000/06/01 18:26:34 ivan
36 * Request PLX I/O region, although driver doesn't use it, to avoid
37 * problems with other drivers accessing it.
38 * Removed count for on-board buffer characters in cy_chars_in_buffer
41 * Revision 2.3.2.6 2000/05/05 13:56:05 ivan
42 * Driver now reports physical instead of virtual memory addresses.
43 * Masks were added to some Cyclades-Z read accesses.
44 * Implemented workaround for PLX9050 bug that would cause a system lockup
45 * in certain systems, depending on the MMIO addresses allocated to the
47 * Changed the Tx interrupt programming in the CD1400 chips to boost up
48 * performance (Cyclom-Y only).
49 * Code is now compliant with the new module interface (module_[init|exit]).
50 * Make use of the PCI helper functions to access PCI resources.
51 * Did some code "housekeeping".
53 * Revision 2.3.2.5 2000/01/19 14:35:33 ivan
54 * Fixed bug in cy_set_termios on CRTSCTS flag turnoff.
56 * Revision 2.3.2.4 2000/01/17 09:19:40 ivan
57 * Fixed SMP locking in Cyclom-Y interrupt handler.
59 * Revision 2.3.2.3 1999/12/28 12:11:39 ivan
60 * Added a new cyclades_card field called nports to allow the driver to
61 * know the exact number of ports found by the Z firmware after its load;
62 * RX buffer contention prevention logic on interrupt op mode revisited
64 * Revisited printk's for Z debug;
65 * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined;
67 * Revision 2.3.2.2 1999/10/01 11:27:43 ivan
68 * Fixed bug in cyz_poll that would make all ports but port 0
69 * unable to transmit/receive data (Cyclades-Z only);
70 * Implemented logic to prevent the RX buffer from being stuck with data
71 * due to a driver / firmware race condition in interrupt op mode
73 * Fixed bug in block_til_ready logic that would lead to a system crash;
74 * Revisited cy_close spinlock usage;
76 * Revision 2.3.2.1 1999/09/28 11:01:22 ivan
77 * Revisited CONFIG_PCI conditional compilation for PCI board support;
78 * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support;
79 * _Major_ cleanup on the Cyclades-Z interrupt support code / logic;
80 * Removed CTS handling from the driver -- this is now completely handled
81 * by the firmware (Cyclades-Z only);
82 * Flush RX on-board buffers on a port open (Cyclades-Z only);
83 * Fixed handling of ASYNC_SPD_* TTY flags;
84 * Module unload now unmaps all memory area allocated by ioremap;
86 * Revision 2.3.1.1 1999/07/15 16:45:53 ivan
87 * Removed CY_PROC conditional compilation;
88 * Implemented SMP-awareness for the driver;
89 * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off]
91 * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs
92 * (irq=NN) as parameters (only for ISA boards);
93 * Fixed bug in set_line_char that would prevent the Cyclades-Z
94 * ports from being configured at speeds above 115.2Kbps;
95 * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control
96 * switching from working properly;
97 * The driver now only prints IRQ info for the Cyclades-Z if it's
98 * configured to work in interrupt mode;
100 * Revision 2.2.2.3 1999/06/28 11:13:29 ivan
101 * Added support for interrupt mode operation for the Z cards;
102 * Removed the driver inactivity control for the Z;
103 * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when
104 * the Z firmware is not loaded yet;
105 * Replaced the "manual" Z Tx flush buffer by a call to a FW command of
106 * same functionality;
107 * Implemented workaround for IRQ setting loss on the PCI configuration
108 * registers after a PCI bridge EEPROM reload (affects PLX9060 only);
110 * Revision 2.2.2.2 1999/05/14 17:18:15 ivan
111 * /proc entry location changed to /proc/tty/driver/cyclades;
112 * Added support to shared IRQ's (only for PCI boards);
113 * Added support for Cobalt Qube2 systems;
114 * IRQ [de]allocation scheme revisited;
115 * BREAK implementation changed in order to make use of the 'break_ctl'
117 * Fixed typo in TTY structure field 'driver_name';
118 * Included a PCI bridge reset and EEPROM reload in the board
119 * initialization code (for both Y and Z series).
121 * Revision 2.2.2.1 1999/04/08 16:17:43 ivan
122 * Fixed a bug in cy_wait_until_sent that was preventing the port to be
123 * closed properly after a SIGINT;
124 * Module usage counter scheme revisited;
125 * Added support to the upcoming Y PCI boards (i.e., support to additional
128 * Revision 2.2.1.10 1999/01/20 16:14:29 ivan
129 * Removed all unnecessary page-alignement operations in ioremap calls
130 * (ioremap is currently safe for these operations).
132 * Revision 2.2.1.9 1998/12/30 18:18:30 ivan
133 * Changed access to PLX PCI bridge registers from I/O to MMIO, in
134 * order to make PLX9050-based boards work with certain motherboards.
136 * Revision 2.2.1.8 1998/11/13 12:46:20 ivan
137 * cy_close function now resets (correctly) the tty->closing flag;
138 * JIFFIES_DIFF macro fixed.
140 * Revision 2.2.1.7 1998/09/03 12:07:28 ivan
141 * Fixed bug in cy_close function, which was not informing HW of
142 * which port should have the reception disabled before doing so;
143 * fixed Cyclom-8YoP hardware detection bug.
145 * Revision 2.2.1.6 1998/08/20 17:15:39 ivan
146 * Fixed bug in cy_close function, which causes malfunction
147 * of one of the first 4 ports when a higher port is closed
150 * Revision 2.2.1.5 1998/08/10 18:10:28 ivan
151 * Fixed Cyclom-4Yo hardware detection bug.
153 * Revision 2.2.1.4 1998/08/04 11:02:50 ivan
154 * /proc/cyclades implementation with great collaboration of
155 * Marc Lewis <marc@blarg.net>;
156 * cyy_interrupt was changed to avoid occurrence of kernel oopses
157 * during PPP operation.
159 * Revision 2.2.1.3 1998/06/01 12:09:10 ivan
160 * General code review in order to comply with 2.1 kernel standards;
161 * data loss prevention for slow devices revisited (cy_wait_until_sent
163 * removed conditional compilation for new/old PCI structure support
164 * (now the driver only supports the new PCI structure).
166 * Revision 2.2.1.1 1998/03/19 16:43:12 ivan
167 * added conditional compilation for new/old PCI structure support;
168 * removed kernel series (2.0.x / 2.1.x) conditional compilation.
170 * Revision 2.1.1.3 1998/03/16 18:01:12 ivan
171 * cleaned up the data loss fix;
172 * fixed XON/XOFF handling once more (Cyclades-Z);
173 * general review of the driver routines;
174 * introduction of a mechanism to prevent data loss with slow
175 * printers, by forcing a delay before closing the port.
177 * Revision 2.1.1.2 1998/02/17 16:50:00 ivan
178 * fixed detection/handling of new CD1400 in Ye boards;
179 * fixed XON/XOFF handling (Cyclades-Z);
180 * fixed data loss caused by a premature port close;
181 * introduction of a flag that holds the CD1400 version ID per port
182 * (used by the CYGETCD1400VER new ioctl).
184 * Revision 2.1.1.1 1997/12/03 17:31:19 ivan
185 * Code review for the module cleanup routine;
186 * fixed RTS and DTR status report for new CD1400's in get_modem_info;
187 * includes anonymous changes regarding signal_pending.
189 * Revision 2.1 1997/11/01 17:42:41 ivan
190 * Changes in the driver to support Alpha systems (except 8Zo V_1);
191 * BREAK fix for the Cyclades-Z boards;
192 * driver inactivity control by FW implemented;
193 * introduction of flag that allows driver to take advantage of
194 * a special CD1400 feature related to HW flow control;
195 * added support for the CD1400 rev. J (Cyclom-Y boards);
196 * introduction of ioctls to:
197 * - control the rtsdtr_inv flag (Cyclom-Y);
198 * - control the rflow flag (Cyclom-Y);
199 * - adjust the polling interval (Cyclades-Z);
201 * Revision 1.36.4.33 1997/06/27 19:00:00 ivan
202 * Fixes related to kernel version conditional
205 * Revision 1.36.4.32 1997/06/14 19:30:00 ivan
206 * Compatibility issues between kernels 2.0.x and
207 * 2.1.x (mainly related to clear_bit function).
209 * Revision 1.36.4.31 1997/06/03 15:30:00 ivan
210 * Changes to define the memory window according to the
213 * Revision 1.36.4.30 1997/05/16 15:30:00 daniel
214 * Changes to support new cycladesZ boards.
216 * Revision 1.36.4.29 1997/05/12 11:30:00 daniel
217 * Merge of Bentson's and Daniel's version 1.36.4.28.
218 * Corrects bug in cy_detect_pci: check if there are more
219 * ports than the number of static structs allocated.
220 * Warning message during initialization if this driver is
221 * used with the new generation of cycladesZ boards. Those
222 * will be supported only in next release of the driver.
223 * Corrects bug in cy_detect_pci and cy_detect_isa that
224 * returned wrong number of VALID boards, when a cyclomY
225 * was found with no serial modules connected.
226 * Changes to use current (2.1.x) kernel subroutine names
227 * and created macros for compilation with 2.0.x kernel,
228 * instead of the other way around.
230 * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson
231 * Change queue_task_irq_off to queue_task_irq.
232 * The inline function queue_task_irq_off (tqueue.h)
233 * was removed from latest releases of 2.1.x kernel.
234 * Use of macro __init to mark the initialization
235 * routines, so memory can be reused.
236 * Also incorporate implementation of critical region
237 * in function cleanup_module() created by anonymous
240 * Revision 1.36.4.28 1997/04/25 16:00:00 daniel
241 * Change to support new firmware that solves DCD problem:
242 * application could fail to receive SIGHUP signal when DCD
245 * Revision 1.36.4.27 1997/03/26 10:30:00 daniel
246 * Changed for support linux versions 2.1.X.
247 * Backward compatible with linux versions 2.0.X.
248 * Corrected illegal use of filler field in
250 * Deleted some debug messages.
252 * Revision 1.36.4.26 1997/02/27 12:00:00 daniel
253 * Included check for NULL tty pointer in cyz_poll.
255 * Revision 1.36.4.25 1997/02/26 16:28:30 bentson
256 * Bill Foster at Blarg! Online services noticed that
257 * some of the switch elements of -Z modem control
258 * lacked a closing "break;"
260 * Revision 1.36.4.24 1997/02/24 11:00:00 daniel
261 * Changed low water threshold for buffer xmit_buf
263 * Revision 1.36.4.23 1996/12/02 21:50:16 bentson
264 * Marcio provided fix to modem status fetch for -Z
266 * Revision 1.36.4.22 1996/10/28 22:41:17 bentson
267 * improve mapping of -Z control page (thanks to Steve
268 * Price <stevep@fa.tdktca.com> for help on this)
270 * Revision 1.36.4.21 1996/09/10 17:00:10 bentson
271 * shift from CPU-bound to memcopy in cyz_polling operation
273 * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson
274 * Added support to set and report higher speeds.
276 * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito
277 * Some fixes in the HW flow control for the BETA release.
278 * Don't try to register the IRQ.
280 * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson
281 * make sure "cyc" appears in all kernel messages; all soft interrupts
282 * handled by same routine; recognize out-of-band reception; comment
283 * out some diagnostic messages; leave RTS/CTS flow control to hardware;
284 * fix race condition in -Z buffer management; only -Y needs to explictly
285 * flush chars; tidy up some startup messages;
287 * Revision 1.36.4.18 1996/07/25 18:57:31 bentson
288 * shift MOD_INC_USE_COUNT location to match
289 * serial.c; purge some diagnostic messages;
291 * Revision 1.36.4.17 1996/07/25 18:01:08 bentson
292 * enable modem status messages and fetch & process them; note
293 * time of last activity type for each port; set_line_char now
294 * supports more than line 0 and treats 0 baud correctly;
295 * get_modem_info senses rs_status;
297 * Revision 1.36.4.16 1996/07/20 08:43:15 bentson
298 * barely works--now's time to turn on
299 * more features 'til it breaks
301 * Revision 1.36.4.15 1996/07/19 22:30:06 bentson
302 * check more -Z board status; shorten boot message
304 * Revision 1.36.4.14 1996/07/19 22:20:37 bentson
305 * fix reference to ch_ctrl in startup; verify return
306 * values from cyz_issue_cmd and cyz_update_channel;
307 * more stuff to get modem control correct;
309 * Revision 1.36.4.13 1996/07/11 19:53:33 bentson
310 * more -Z stuff folded in; re-order changes to put -Z stuff
311 * after -Y stuff (to make changes clearer)
313 * Revision 1.36.4.12 1996/07/11 15:40:55 bentson
314 * Add code to poll Cyclades-Z. Add code to get & set RS-232 control.
315 * Add code to send break. Clear firmware ID word at startup (so
316 * that other code won't talk to inactive board).
318 * Revision 1.36.4.11 1996/07/09 05:28:29 bentson
319 * add code for -Z in set_line_char
321 * Revision 1.36.4.10 1996/07/08 19:28:37 bentson
322 * fold more -Z stuff (or in some cases, error messages)
323 * into driver; add text to "don't know what to do" messages.
325 * Revision 1.36.4.9 1996/07/08 18:38:38 bentson
326 * moved compile-time flags near top of file; cosmetic changes
327 * to narrow text (to allow 2-up printing); changed many declarations
328 * to "static" to limit external symbols; shuffled code order to
329 * coalesce -Y and -Z specific code, also to put internal functions
330 * in order of tty_driver structure; added code to recognize -Z
331 * ports (and for moment, do nothing or report error); add cy_startup
332 * to parse boot command line for extra base addresses for ISA probes;
334 * Revision 1.36.4.8 1996/06/25 17:40:19 bentson
335 * reorder some code, fix types of some vars (int vs. long),
336 * add cy_setup to support user declared ISA addresses
338 * Revision 1.36.4.7 1996/06/21 23:06:18 bentson
339 * dump ioctl based firmware load (it's now a user level
340 * program); ensure uninitialzed ports cannot be used
342 * Revision 1.36.4.6 1996/06/20 23:17:19 bentson
343 * rename vars and restructure some code
345 * Revision 1.36.4.5 1996/06/14 15:09:44 bentson
346 * get right status back after boot load
348 * Revision 1.36.4.4 1996/06/13 19:51:44 bentson
349 * successfully loads firmware
351 * Revision 1.36.4.3 1996/06/13 06:08:33 bentson
352 * add more of the code for the boot/load ioctls
354 * Revision 1.36.4.2 1996/06/11 21:00:51 bentson
355 * start to add Z functionality--starting with ioctl
356 * for loading firmware
358 * Revision 1.36.4.1 1996/06/10 18:03:02 bentson
359 * added code to recognize Z/PCI card at initialization; report
360 * presence, but card is not initialized (because firmware needs
363 * Revision 1.36.3.8 1996/06/07 16:29:00 bentson
364 * starting minor number at zero; added missing verify_area
365 * as noted by Heiko Eissfeldt <heiko@colossus.escape.de>
367 * Revision 1.36.3.7 1996/04/19 21:06:18 bentson
368 * remove unneeded boot message & fix CLOCAL hardware flow
369 * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>);
370 * remove unused diagnostic statements; minor 0 is first;
372 * Revision 1.36.3.6 1996/03/13 13:21:17 marcio
373 * The kernel function vremap (available only in later 1.3.xx kernels)
374 * allows the access to memory addresses above the RAM. This revision
375 * of the driver supports PCI boards below 1Mb (device id 0x100) and
376 * above 1Mb (device id 0x101).
378 * Revision 1.36.3.5 1996/03/07 15:20:17 bentson
379 * Some global changes to interrupt handling spilled into
380 * this driver--mostly unused arguments in system function
381 * calls. Also added change by Marcio Saito which should
382 * reduce lost interrupts at startup by fast processors.
384 * Revision 1.36.3.4 1995/11/13 20:45:10 bentson
385 * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed
386 * in 1.3.41 kernel to remove a possible race condition, extend
387 * some error messages, and let the driver run as a loadable module
388 * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a
389 * possible race condition.
390 * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing.
392 * Revision 1.36.3.3 1995/11/13 19:44:48 bentson
393 * Changes by Linus Torvalds in 1.3.33 kernel distribution
394 * required due to reordering of driver initialization.
395 * Drivers are now initialized *after* memory management.
397 * Revision 1.36.3.2 1995/09/08 22:07:14 bentson
398 * remove printk from ISR; fix typo
400 * Revision 1.36.3.1 1995/09/01 12:00:42 marcio
401 * Minor fixes in the PCI board support. PCI function calls in
402 * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan
403 * <duncan@okay.com>. "bad serial count" message removed.
405 * Revision 1.36.3 1995/08/22 09:19:42 marcio
406 * Cyclom-Y/PCI support added. Changes in the cy_init routine and
407 * board initialization. Changes in the boot messages. The driver
408 * supports up to 4 boards and 64 ports by default.
410 * Revision 1.36.1.4 1995/03/29 06:14:14 bentson
411 * disambiguate between Cyclom-16Y and Cyclom-32Ye;
413 * Revision 1.36.1.3 1995/03/23 22:15:35 bentson
414 * add missing break in modem control block in ioctl switch statement
415 * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>);
417 * Revision 1.36.1.2 1995/03/22 19:16:22 bentson
418 * make sure CTS flow control is set as soon as possible (thanks
419 * to note from David Lambert <lambert@chesapeake.rps.slb.com>);
421 * Revision 1.36.1.1 1995/03/13 15:44:43 bentson
422 * initialize defaults for receive threshold and stale data timeout;
425 * Revision 1.36 1995/03/10 23:33:53 bentson
426 * added support of chips 4-7 in 32 port Cyclom-Ye;
427 * fix cy_interrupt pointer dereference problem
428 * (Joe Portman <baron@aa.net>);
429 * give better error response if open is attempted on non-existent port
430 * (Zachariah Vaum <jchryslr@netcom.com>);
431 * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>);
432 * conditional compilation for -16Y on systems with fast, noisy bus;
433 * comment out diagnostic print function;
434 * cleaned up table of base addresses;
435 * set receiver time-out period register to correct value,
436 * set receive threshold to better default values,
437 * set chip timer to more accurate 200 Hz ticking,
438 * add code to monitor and modify receive parameters
439 * (Rik Faith <faith@cs.unc.edu> Nick Simicich
440 * <njs@scifi.emi.net>);
442 * Revision 1.35 1994/12/16 13:54:18 steffen
443 * additional patch by Marcio Saito for board detection
444 * Accidently left out in 1.34
446 * Revision 1.34 1994/12/10 12:37:12 steffen
447 * This is the corrected version as suggested by Marcio Saito
449 * Revision 1.33 1994/12/01 22:41:18 bentson
450 * add hooks to support more high speeds directly; add tytso
451 * patch regarding CLOCAL wakeups
453 * Revision 1.32 1994/11/23 19:50:04 bentson
454 * allow direct kernel control of higher signalling rates;
455 * look for cards at additional locations
457 * Revision 1.31 1994/11/16 04:33:28 bentson
458 * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com--
459 * a problem in chars_in_buffer has been resolved by some
460 * small changes; this should yield smoother output
462 * Revision 1.30 1994/11/16 04:28:05 bentson
463 * Fix from Corey Minyard, Internet: minyard@metronet.com,
464 * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to
465 * cy_hangup that appears to clear up much (all?) of the
466 * DTR glitches; also he's added/cleaned-up diagnostic messages
468 * Revision 1.29 1994/11/16 04:16:07 bentson
469 * add change proposed by Ralph Sims, ralphs@halcyon.com, to
470 * operate higher speeds in same way as other serial ports;
471 * add more serial ports (for up to two 16-port muxes).
473 * Revision 1.28 1994/11/04 00:13:16 root
474 * turn off diagnostic messages
476 * Revision 1.27 1994/11/03 23:46:37 root
477 * bunch of changes to bring driver into greater conformance
478 * with the serial.c driver (looking for missed fixes)
480 * Revision 1.26 1994/11/03 22:40:36 root
481 * automatic interrupt probing fixed.
483 * Revision 1.25 1994/11/03 20:17:02 root
484 * start to implement auto-irq
486 * Revision 1.24 1994/11/03 18:01:55 root
487 * still working on modem signals--trying not to drop DTR
488 * during the getty/login processes
490 * Revision 1.23 1994/11/03 17:51:36 root
491 * extend baud rate support; set receive threshold as function
492 * of baud rate; fix some problems with RTS/CTS;
494 * Revision 1.22 1994/11/02 18:05:35 root
495 * changed arguments to udelay to type long to get
496 * delays to be of correct duration
498 * Revision 1.21 1994/11/02 17:37:30 root
499 * employ udelay (after calibrating loops_per_second earlier
500 * in init/main.c) instead of using home-grown delay routines
502 * Revision 1.20 1994/11/02 03:11:38 root
503 * cy_chars_in_buffer forces a return value of 0 to let
504 * login work (don't know why it does); some functions
505 * that were returning EFAULT, now executes the code;
506 * more work on deciding when to disable xmit interrupts;
508 * Revision 1.19 1994/11/01 20:10:14 root
509 * define routine to start transmission interrupts (by enabling
510 * transmit interrupts); directly enable/disable modem interrupts;
512 * Revision 1.18 1994/11/01 18:40:45 bentson
513 * Don't always enable transmit interrupts in startup; interrupt on
514 * TxMpty instead of TxRdy to help characters get out before shutdown;
515 * restructure xmit interrupt to check for chars first and quit if
516 * none are ready to go; modem status (MXVRx) is upright, _not_ inverted
519 * Revision 1.17 1994/10/30 04:39:45 bentson
520 * rename serial_driver and callout_driver to cy_serial_driver and
521 * cy_callout_driver to avoid linkage interference; initialize
522 * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port
523 * from cyclades_port structure; add paranoia check to cy_close;
525 * Revision 1.16 1994/10/30 01:14:33 bentson
526 * change major numbers; add some _early_ return statements;
528 * Revision 1.15 1994/10/29 06:43:15 bentson
529 * final tidying up for clean compile; enable some error reporting
531 * Revision 1.14 1994/10/28 20:30:22 Bentson
532 * lots of changes to drag the driver towards the new tty_io
533 * structures and operation. not expected to work, but may
536 * Revision 1.13 1994/07/21 23:08:57 Bentson
537 * add some diagnostic cruft; support 24 lines (for testing
538 * both -8Y and -16Y cards; be more thorough in servicing all
539 * chips during interrupt; add "volatile" a few places to
540 * circumvent compiler optimizations; fix base & offset
541 * computations in block_til_ready (was causing chip 0 to
544 * Revision 1.12 1994/07/19 16:42:11 Bentson
545 * add some hackery for kernel version 1.1.8; expand
546 * error messages; refine timing for delay loops and
547 * declare loop params volatile
549 * Revision 1.11 1994/06/11 21:53:10 bentson
550 * get use of save_car right in transmit interrupt service
552 * Revision 1.10.1.1 1994/06/11 21:31:18 bentson
553 * add some diagnostic printing; try to fix save_car stuff
555 * Revision 1.10 1994/06/11 20:36:08 bentson
556 * clean up compiler warnings
558 * Revision 1.9 1994/06/11 19:42:46 bentson
559 * added a bunch of code to support modem signalling
561 * Revision 1.8 1994/06/11 17:57:07 bentson
562 * recognize break & parity error
564 * Revision 1.7 1994/06/05 05:51:34 bentson
565 * Reorder baud table to be monotonic; add cli to CP; discard
566 * incoming characters and status if the line isn't open; start to
567 * fold code into cy_throttle; start to port get_serial_info,
568 * set_serial_info, get_modem_info, set_modem_info, and send_break
569 * from serial.c; expand cy_ioctl; relocate and expand config_setup;
570 * get flow control characters from tty struct; invalidate ports w/o
573 * Revision 1.6 1994/05/31 18:42:21 bentson
574 * add a loop-breaker in the interrupt service routine;
575 * note when port is initialized so that it can be shut
576 * down under the right conditions; receive works without
579 * Revision 1.5 1994/05/30 00:55:02 bentson
580 * transmit works without obvious errors
582 * Revision 1.4 1994/05/27 18:46:27 bentson
583 * incorporated more code from lib_y.c; can now print short
584 * strings under interrupt control to port zero; seems to
585 * select ports/channels/lines correctly
587 * Revision 1.3 1994/05/25 22:12:44 bentson
588 * shifting from multi-port on a card to proper multiplexor
589 * data structures; added skeletons of most routines
591 * Revision 1.2 1994/05/19 13:21:43 bentson
592 * start to crib from other sources
596 /* If you need to install more boards than NR_CARDS, change the constant
597 in the definition below. No other change is necessary to support up to
598 eight boards. Beyond that you'll have to extend cy_isa_addresses. */
603 If the total number of ports is larger than NR_PORTS, change this
604 constant in the definition below. No other change is necessary to
605 support more boards/ports. */
609 #define ZE_V1_NPORTS 64
614 #define SERIAL_PARANOIA_CHECK
616 #undef CY_DEBUG_THROTTLE
617 #undef CY_DEBUG_OTHER
619 #undef CY_DEBUG_COUNT
621 #undef CY_DEBUG_WAIT_UNTIL_SENT
622 #undef CY_DEBUG_INTERRUPTS
624 #undef CY_ENABLE_MONITORING
628 #define PAUSE __asm__("nop");
636 #include <linux/config.h>
637 #include <linux/module.h>
638 #include <linux/errno.h>
639 #include <linux/signal.h>
640 #include <linux/sched.h>
641 #include <linux/timer.h>
642 #include <linux/interrupt.h>
643 #include <linux/tty.h>
644 #include <linux/serial.h>
645 #include <linux/major.h>
646 #include <linux/string.h>
647 #include <linux/fcntl.h>
648 #include <linux/ptrace.h>
649 #include <linux/cyclades.h>
650 #include <linux/mm.h>
651 #include <linux/ioport.h>
652 #include <linux/init.h>
653 #include <linux/delay.h>
654 #include <linux/spinlock.h>
656 #include <asm/system.h>
659 #include <asm/uaccess.h>
660 #include <asm/bitops.h>
662 #define CY_LOCK(info,flags) \
664 spin_lock_irqsave(&cy_card[info->card].card_lock, flags); \
667 #define CY_UNLOCK(info,flags) \
669 spin_unlock_irqrestore(&cy_card[info->card].card_lock, flags); \
672 #include <linux/types.h>
673 #include <linux/kernel.h>
674 #include <linux/pci.h>
676 #include <linux/stat.h>
677 #include <linux/proc_fs.h>
679 #define cy_put_user put_user
681 static void cy_throttle (struct tty_struct *tty);
682 static void cy_send_xchar (struct tty_struct *tty, char ch);
685 cy_get_user(unsigned long *addr)
687 unsigned long result = 0;
688 int error = get_user (result, addr);
690 printk ("cyclades: cy_get_user: error == %d\n", error);
695 #define MIN(a,b) ((a) < (b) ? (a) : (b))
698 #define IS_CYC_Z(card) ((card).num_chips == -1)
700 #define Z_FPGA_CHECK(card) \
701 ((cy_readl(&((struct RUNTIME_9060 *) \
702 ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0)
704 #define ISZLOADED(card) (((ZO_V1==cy_readl(&((struct RUNTIME_9060 *) \
705 ((card).ctl_addr))->mail_box_0)) || \
706 Z_FPGA_CHECK(card)) && \
707 (ZFIRM_ID==cy_readl(&((struct FIRM_ID *) \
708 ((card).base_addr+ID_ADDRESS))->signature)))
710 #ifndef SERIAL_XMIT_SIZE
711 #define SERIAL_XMIT_SIZE (MIN(PAGE_SIZE, 4096))
713 #define WAKEUP_CHARS 256
715 #define STD_COM_FLAGS (0)
717 #define JIFFIES_DIFF(n, j) ((j) - (n))
719 static struct tty_driver *cy_serial_driver;
722 /* This is the address lookup table. The driver will probe for
723 Cyclom-Y/ISA boards at all addresses in here. If you want the
724 driver to probe addresses at a different address, add it to
725 this table. If the driver is probing some other board and
726 causing problems, remove the offending address from this table.
727 The cy_setup function extracts additional addresses from the
728 boot options line. The form is "cyclades=address,address..."
731 static unsigned char *cy_isa_addresses[] = {
732 (unsigned char *) 0xD0000,
733 (unsigned char *) 0xD2000,
734 (unsigned char *) 0xD4000,
735 (unsigned char *) 0xD6000,
736 (unsigned char *) 0xD8000,
737 (unsigned char *) 0xDA000,
738 (unsigned char *) 0xDC000,
739 (unsigned char *) 0xDE000,
742 #define NR_ISA_ADDRS (sizeof(cy_isa_addresses)/sizeof(unsigned char*))
745 static long maddr[NR_CARDS] = { 0, };
746 static int irq[NR_CARDS] = { 0, };
748 MODULE_PARM(maddr, "1-" __MODULE_STRING(NR_CARDS) "l");
749 MODULE_PARM(irq, "1-" __MODULE_STRING(NR_CARDS) "i");
752 #endif /* CONFIG_ISA */
754 /* This is the per-card data structure containing address, irq, number of
755 channels, etc. This driver supports a maximum of NR_CARDS cards.
757 static struct cyclades_card cy_card[NR_CARDS];
759 /* This is the per-channel data structure containing pointers, flags
760 and variables for the port. This driver supports a maximum of NR_PORTS.
762 static struct cyclades_port cy_port[NR_PORTS];
764 static int cy_next_channel; /* next minor available */
767 * tmp_buf is used as a temporary buffer by serial_write. We need to
768 * lock it in case the copy_from_user blocks while swapping in a page,
769 * and some other program tries to do a serial write at the same time.
770 * Since the lock will only come under contention when the system is
771 * swapping and available memory is low, it makes sense to share one
772 * buffer across all the serial ports, since it significantly saves
773 * memory if large numbers of serial ports are open. This buffer is
774 * allocated when the first cy_open occurs.
776 static unsigned char *tmp_buf;
777 DECLARE_MUTEX(tmp_buf_sem);
780 * This is used to look up the divisor speeds and the timeouts
781 * We're normally limited to 15 distinct baud rates. The extra
782 * are accessed via settings in info->flags.
783 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
784 * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
788 static int baud_table[] = {
789 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
790 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800,115200,150000,
793 static char baud_co_25[] = { /* 25 MHz clock option table */
794 /* value => 00 01 02 03 04 */
795 /* divide by 8 32 128 512 2048 */
796 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
797 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
799 static char baud_bpr_25[] = { /* 25 MHz baud rate period table */
800 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
801 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15};
803 static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
804 /* value => 00 01 02 03 04 */
805 /* divide by 8 32 128 512 2048 */
806 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
807 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
810 static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */
811 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
812 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
815 static char baud_cor3[] = { /* receive threshold */
816 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
817 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
821 * The Cyclades driver implements HW flow control as any serial driver.
822 * The cyclades_port structure member rflow and the vector rflow_thr
823 * allows us to take advantage of a special feature in the CD1400 to avoid
824 * data loss even when the system interrupt latency is too high. These flags
825 * are to be used only with very special applications. Setting these flags
826 * requires the use of a special cable (DTR and RTS reversed). In the new
827 * CD1400-based boards (rev. 6.00 or later), there is no need for special
831 static char rflow_thr[] = { /* rflow threshold */
832 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
833 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
836 /* The Cyclom-Ye has placed the sequential chips in non-sequential
837 * address order. This look-up table overcomes that problem.
839 static int cy_chip_offset [] =
850 /* PCI related definitions */
852 static unsigned short cy_pci_nboard;
853 static unsigned short cy_isa_nboard;
854 static unsigned short cy_nboard;
856 static unsigned short cy_pci_dev_id[] = {
857 PCI_DEVICE_ID_CYCLOM_Y_Lo, /* PCI < 1Mb */
858 PCI_DEVICE_ID_CYCLOM_Y_Hi, /* PCI > 1Mb */
859 PCI_DEVICE_ID_CYCLOM_4Y_Lo, /* 4Y PCI < 1Mb */
860 PCI_DEVICE_ID_CYCLOM_4Y_Hi, /* 4Y PCI > 1Mb */
861 PCI_DEVICE_ID_CYCLOM_8Y_Lo, /* 8Y PCI < 1Mb */
862 PCI_DEVICE_ID_CYCLOM_8Y_Hi, /* 8Y PCI > 1Mb */
863 PCI_DEVICE_ID_CYCLOM_Z_Lo, /* Z PCI < 1Mb */
864 PCI_DEVICE_ID_CYCLOM_Z_Hi, /* Z PCI > 1Mb */
869 static void cy_start(struct tty_struct *);
870 static void set_line_char(struct cyclades_port *);
871 static int cyz_issue_cmd(struct cyclades_card *, uclong, ucchar, uclong);
873 static unsigned detect_isa_irq (volatile ucchar *);
874 #endif /* CONFIG_ISA */
876 static int cyclades_get_proc_info(char *, char **, off_t , int , int *, void *);
878 #ifndef CONFIG_CYZ_INTR
879 static void cyz_poll(unsigned long);
881 /* The Cyclades-Z polling cycle is defined by this variable */
882 static long cyz_polling_cycle = CZ_DEF_POLL;
884 static int cyz_timeron = 0;
885 static struct timer_list cyz_timerlist = TIMER_INITIALIZER(cyz_poll, 0, 0);
887 #else /* CONFIG_CYZ_INTR */
888 static void cyz_rx_restart(unsigned long);
889 static struct timer_list cyz_rx_full_timer[NR_PORTS];
890 #endif /* CONFIG_CYZ_INTR */
893 serial_paranoia_check(struct cyclades_port *info,
894 char *name, const char *routine)
896 #ifdef SERIAL_PARANOIA_CHECK
897 static const char *badmagic =
898 "cyc Warning: bad magic number for serial struct (%s) in %s\n";
899 static const char *badinfo =
900 "cyc Warning: null cyclades_port for (%s) in %s\n";
901 static const char *badrange =
902 "cyc Warning: cyclades_port out of range for (%s) in %s\n";
905 printk(badinfo, name, routine);
909 if( (long)info < (long)(&cy_port[0])
910 || (long)(&cy_port[NR_PORTS]) < (long)info ){
911 printk(badrange, name, routine);
915 if (info->magic != CYCLADES_MAGIC) {
916 printk(badmagic, name, routine);
921 } /* serial_paranoia_check */
924 * This routine is used by the interrupt handler to schedule
925 * processing in the software interrupt portion of the driver
926 * (also known as the "bottom half"). This can be called any
927 * number of times for any channel without harm.
930 cy_sched_event(struct cyclades_port *info, int event)
932 info->event |= 1 << event; /* remember what kind of event and who */
933 schedule_work(&info->tqueue);
934 } /* cy_sched_event */
938 * This routine is used to handle the "bottom half" processing for the
939 * serial driver, known also the "software interrupt" processing.
940 * This processing is done at the kernel interrupt level, after the
941 * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
942 * is where time-consuming activities which can not be done in the
943 * interrupt driver proper are done; the interrupt driver schedules
944 * them using cy_sched_event(), and they get done here.
946 * This is done through one level of indirection--the task queue.
947 * When a hardware interrupt service routine wants service by the
948 * driver's bottom half, it enqueues the appropriate tq_struct (one
949 * per port) to the keventd work queue and sets a request flag
950 * that the work queue be processed.
952 * Although this may seem unwieldy, it gives the system a way to
953 * pass an argument (in this case the pointer to the cyclades_port
954 * structure) to the bottom half of the driver. Previous kernels
955 * had to poll every port to see if that port needed servicing.
958 do_softint(void *private_)
960 struct cyclades_port *info = (struct cyclades_port *) private_;
961 struct tty_struct *tty;
967 if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) {
968 tty_hangup(info->tty);
969 wake_up_interruptible(&info->open_wait);
970 info->flags &= ~ASYNC_NORMAL_ACTIVE;
972 if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) {
973 wake_up_interruptible(&info->open_wait);
975 #ifdef CONFIG_CYZ_INTR
976 if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event)) {
977 if (cyz_rx_full_timer[info->line].function == NULL) {
978 cyz_rx_full_timer[info->line].expires = jiffies + 1;
979 cyz_rx_full_timer[info->line].function = cyz_rx_restart;
980 cyz_rx_full_timer[info->line].data = (unsigned long)info;
981 add_timer(&cyz_rx_full_timer[info->line]);
985 if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) {
986 wake_up_interruptible(&info->delta_msr_wait);
988 if (test_and_clear_bit(Cy_EVENT_WRITE_WAKEUP, &info->event)) {
989 if((tty->flags & (1<< TTY_DO_WRITE_WAKEUP))
990 && tty->ldisc.write_wakeup){
991 (tty->ldisc.write_wakeup)(tty);
993 wake_up_interruptible(&tty->write_wait);
996 if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) {
997 wake_up_interruptible(&info->shutdown_wait);
1003 /***********************************************************/
1004 /********* Start of block of Cyclom-Y specific code ********/
1006 /* This routine waits up to 1000 micro-seconds for the previous
1007 command to the Cirrus chip to complete and then issues the
1008 new command. An error is returned if the previous command
1009 didn't finish within the time limit.
1011 This function is only called from inside spinlock-protected code.
1014 cyy_issue_cmd(volatile ucchar *base_addr, u_char cmd, int index)
1018 /* Check to see that the previous command has completed */
1019 for(i = 0 ; i < 100 ; i++){
1020 if (cy_readb(base_addr+(CyCCR<<index)) == 0){
1025 /* if the CCR never cleared, the previous command
1026 didn't finish within the "reasonable time" */
1027 if (i == 100) return (-1);
1029 /* Issue the new command */
1030 cy_writeb((u_long)base_addr+(CyCCR<<index), cmd);
1033 } /* cyy_issue_cmd */
1036 /* ISA interrupt detection code */
1038 detect_isa_irq (volatile ucchar *address)
1041 unsigned long irqs, flags;
1042 int save_xir, save_car;
1043 int index = 0; /* IRQ probing is only for ISA */
1045 /* forget possible initially masked and pending IRQ */
1046 irq = probe_irq_off(probe_irq_on());
1048 /* Clear interrupts on the board first */
1049 cy_writeb((u_long)address + (Cy_ClrIntr<<index), 0);
1050 /* Cy_ClrIntr is 0x1800 */
1052 irqs = probe_irq_on();
1056 /* Enable the Tx interrupts on the CD1400 */
1057 local_irq_save(flags);
1058 cy_writeb((u_long)address + (CyCAR<<index), 0);
1059 cyy_issue_cmd(address, CyCHAN_CTL|CyENB_XMTR, index);
1061 cy_writeb((u_long)address + (CyCAR<<index), 0);
1062 cy_writeb((u_long)address + (CySRER<<index),
1063 cy_readb(address + (CySRER<<index)) | CyTxRdy);
1064 local_irq_restore(flags);
1069 /* Check which interrupt is in use */
1070 irq = probe_irq_off(irqs);
1073 save_xir = (u_char) cy_readb(address + (CyTIR<<index));
1074 save_car = cy_readb(address + (CyCAR<<index));
1075 cy_writeb((u_long)address + (CyCAR<<index), (save_xir & 0x3));
1076 cy_writeb((u_long)address + (CySRER<<index),
1077 cy_readb(address + (CySRER<<index)) & ~CyTxRdy);
1078 cy_writeb((u_long)address + (CyTIR<<index), (save_xir & 0x3f));
1079 cy_writeb((u_long)address + (CyCAR<<index), (save_car));
1080 cy_writeb((u_long)address + (Cy_ClrIntr<<index), 0);
1081 /* Cy_ClrIntr is 0x1800 */
1083 return (irq > 0)? irq : 0;
1085 #endif /* CONFIG_ISA */
1087 /* The real interrupt service routine is called
1088 whenever the card wants its hand held--chars
1089 received, out buffer empty, modem change, etc.
1092 cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1094 struct tty_struct *tty;
1096 struct cyclades_card *cinfo;
1097 struct cyclades_port *info;
1098 volatile unsigned char *base_addr, *card_base_addr;
1100 int save_xir, channel, save_car;
1102 volatile int char_count;
1110 if((cinfo = (struct cyclades_card *)dev_id) == 0){
1111 #ifdef CY_DEBUG_INTERRUPTS
1112 printk("cyy_interrupt: spurious interrupt %d\n\r", irq);
1114 return IRQ_NONE; /* spurious interrupt */
1117 card_base_addr = (unsigned char *)cinfo->base_addr;
1118 index = cinfo->bus_index;
1121 /* This loop checks all chips in the card. Make a note whenever
1122 _any_ chip had some work to do, as this is considered an
1123 indication that there will be more to do. Only when no chip
1124 has any work does this outermost loop exit.
1128 for ( chip = 0 ; chip < cinfo->num_chips ; chip ++) {
1129 base_addr = (unsigned char *)
1130 (cinfo->base_addr + (cy_chip_offset[chip]<<index));
1132 while ( (status = cy_readb(base_addr+(CySVRR<<index))) != 0x00) {
1134 /* The purpose of the following test is to ensure that
1135 no chip can monopolize the driver. This forces the
1136 chips to be checked in a round-robin fashion (after
1137 draining each of a bunch (1000) of characters).
1139 if(1000<too_many++){
1142 if (status & CySRReceive) { /* reception interrupt */
1143 #ifdef CY_DEBUG_INTERRUPTS
1144 printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip);
1146 /* determine the channel & change to that context */
1147 spin_lock(&cinfo->card_lock);
1148 save_xir = (u_char) cy_readb(base_addr+(CyRIR<<index));
1149 channel = (u_short ) (save_xir & CyIRChannel);
1150 i = channel + chip * 4 + cinfo->first_line;
1152 info->last_active = jiffies;
1153 save_car = cy_readb(base_addr+(CyCAR<<index));
1154 cy_writeb((u_long)base_addr+(CyCAR<<index), save_xir);
1156 /* if there is nowhere to put the data, discard it */
1158 j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
1159 if ( j == CyIVRRxEx ) { /* exception */
1160 data = cy_readb(base_addr+(CyRDSR<<index));
1161 } else { /* normal character reception */
1162 char_count = cy_readb(base_addr+(CyRDCR<<index));
1163 while(char_count--){
1164 data = cy_readb(base_addr+(CyRDSR<<index));
1167 }else{ /* there is an open port for this data */
1169 j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
1170 if ( j == CyIVRRxEx ) { /* exception */
1171 data = cy_readb(base_addr+(CyRDSR<<index));
1173 /* For statistics only */
1176 else if(data & CyFRAME)
1177 info->icount.frame++;
1178 else if(data & CyPARITY)
1179 info->icount.parity++;
1180 else if(data & CyOVERRUN)
1181 info->icount.overrun++;
1183 if(data & info->ignore_status_mask){
1187 if (tty->flip.count < TTY_FLIPBUF_SIZE){
1189 if (data & info->read_status_mask){
1191 *tty->flip.flag_buf_ptr++ =
1193 *tty->flip.char_buf_ptr++ =
1194 cy_readb(base_addr+(CyRDSR<<index));
1196 if (info->flags & ASYNC_SAK){
1199 }else if(data & CyFRAME){
1200 *tty->flip.flag_buf_ptr++ =
1202 *tty->flip.char_buf_ptr++ =
1203 cy_readb(base_addr+(CyRDSR<<index));
1205 info->idle_stats.frame_errs++;
1206 }else if(data & CyPARITY){
1207 *tty->flip.flag_buf_ptr++ =
1209 *tty->flip.char_buf_ptr++ =
1210 cy_readb(base_addr+(CyRDSR<<index));
1212 info->idle_stats.parity_errs++;
1213 }else if(data & CyOVERRUN){
1214 *tty->flip.flag_buf_ptr++ =
1216 *tty->flip.char_buf_ptr++ = 0;
1218 /* If the flip buffer itself is
1219 overflowing, we still lose
1220 the next incoming character.
1223 < TTY_FLIPBUF_SIZE){
1225 *tty->flip.flag_buf_ptr++ =
1227 *tty->flip.char_buf_ptr++ =
1228 cy_readb(base_addr+(CyRDSR<<index));
1231 info->idle_stats.overruns++;
1232 /* These two conditions may imply */
1233 /* a normal read should be done. */
1234 /* }else if(data & CyTIMEOUT){ */
1235 /* }else if(data & CySPECHAR){ */
1237 *tty->flip.flag_buf_ptr++ = 0;
1238 *tty->flip.char_buf_ptr++ = 0;
1242 *tty->flip.flag_buf_ptr++ = 0;
1243 *tty->flip.char_buf_ptr++ = 0;
1247 /* there was a software buffer
1248 overrun and nothing could be
1250 info->icount.buf_overrun++;
1251 info->idle_stats.overruns++;
1253 } else { /* normal character reception */
1254 /* load # chars available from the chip */
1255 char_count = cy_readb(base_addr+(CyRDCR<<index));
1257 #ifdef CY_ENABLE_MONITORING
1258 ++info->mon.int_count;
1259 info->mon.char_count += char_count;
1260 if (char_count > info->mon.char_max)
1261 info->mon.char_max = char_count;
1262 info->mon.char_last = char_count;
1264 while(char_count--){
1265 if (tty->flip.count >= TTY_FLIPBUF_SIZE){
1269 data = cy_readb(base_addr+(CyRDSR<<index));
1270 *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
1271 *tty->flip.char_buf_ptr++ = data;
1272 info->idle_stats.recv_bytes++;
1278 info->idle_stats.recv_idle = jiffies;
1280 schedule_delayed_work(&tty->flip.work, 1);
1282 /* end of service */
1283 cy_writeb((u_long)base_addr+(CyRIR<<index), (save_xir & 0x3f));
1284 cy_writeb((u_long)base_addr+(CyCAR<<index), (save_car));
1285 spin_unlock(&cinfo->card_lock);
1289 if (status & CySRTransmit) { /* transmission interrupt */
1290 /* Since we only get here when the transmit buffer
1291 is empty, we know we can always stuff a dozen
1293 #ifdef CY_DEBUG_INTERRUPTS
1294 printk("cyy_interrupt: xmit intr, chip %d\n\r", chip);
1297 /* determine the channel & change to that context */
1298 spin_lock(&cinfo->card_lock);
1299 save_xir = (u_char) cy_readb(base_addr+(CyTIR<<index));
1300 channel = (u_short ) (save_xir & CyIRChannel);
1301 i = channel + chip * 4 + cinfo->first_line;
1302 save_car = cy_readb(base_addr+(CyCAR<<index));
1303 cy_writeb((u_long)base_addr+(CyCAR<<index), save_xir);
1305 /* validate the port# (as configured and open) */
1306 if( (i < 0) || (NR_PORTS <= i) ){
1307 cy_writeb((u_long)base_addr+(CySRER<<index),
1308 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
1312 info->last_active = jiffies;
1314 cy_writeb((u_long)base_addr+(CySRER<<index),
1315 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
1319 /* load the on-chip space for outbound data */
1320 char_count = info->xmit_fifo_size;
1322 if(info->x_char) { /* send special char */
1323 outch = info->x_char;
1324 cy_writeb((u_long)base_addr+(CyTDR<<index), outch);
1330 if (info->breakon || info->breakoff) {
1331 if (info->breakon) {
1332 cy_writeb((u_long)base_addr + (CyTDR<<index), 0);
1333 cy_writeb((u_long)base_addr + (CyTDR<<index), 0x81);
1337 if (info->breakoff) {
1338 cy_writeb((u_long)base_addr + (CyTDR<<index), 0);
1339 cy_writeb((u_long)base_addr + (CyTDR<<index), 0x83);
1345 while (char_count-- > 0){
1346 if (!info->xmit_cnt){
1347 if (cy_readb(base_addr+(CySRER<<index))&CyTxMpty) {
1348 cy_writeb((u_long)base_addr+(CySRER<<index),
1349 cy_readb(base_addr+(CySRER<<index)) &
1352 cy_writeb((u_long)base_addr+(CySRER<<index),
1353 ((cy_readb(base_addr+(CySRER<<index))
1359 if (info->xmit_buf == 0){
1360 cy_writeb((u_long)base_addr+(CySRER<<index),
1361 cy_readb(base_addr+(CySRER<<index)) &
1365 if (info->tty->stopped || info->tty->hw_stopped){
1366 cy_writeb((u_long)base_addr+(CySRER<<index),
1367 cy_readb(base_addr+(CySRER<<index)) &
1371 /* Because the Embedded Transmit Commands have
1372 been enabled, we must check to see if the
1373 escape character, NULL, is being sent. If it
1374 is, we must ensure that there is room for it
1375 to be doubled in the output stream. Therefore
1376 we no longer advance the pointer when the
1377 character is fetched, but rather wait until
1378 after the check for a NULL output character.
1379 This is necessary because there may not be
1380 room for the two chars needed to send a NULL.)
1382 outch = info->xmit_buf[info->xmit_tail];
1385 info->xmit_tail = (info->xmit_tail + 1)
1386 & (SERIAL_XMIT_SIZE - 1);
1387 cy_writeb((u_long)base_addr+(CyTDR<<index), outch);
1392 info->xmit_tail = (info->xmit_tail + 1)
1393 & (SERIAL_XMIT_SIZE - 1);
1394 cy_writeb((u_long)base_addr+(CyTDR<<index),
1396 cy_writeb((u_long)base_addr+(CyTDR<<index), 0);
1405 if (info->xmit_cnt < WAKEUP_CHARS) {
1406 cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
1409 /* end of service */
1410 cy_writeb((u_long)base_addr+(CyTIR<<index),
1412 cy_writeb((u_long)base_addr+(CyCAR<<index), (save_car));
1413 spin_unlock(&cinfo->card_lock);
1416 if (status & CySRModem) { /* modem interrupt */
1418 /* determine the channel & change to that context */
1419 spin_lock(&cinfo->card_lock);
1420 save_xir = (u_char) cy_readb(base_addr+(CyMIR<<index));
1421 channel = (u_short ) (save_xir & CyIRChannel);
1422 info = &cy_port[channel + chip * 4
1423 + cinfo->first_line];
1424 info->last_active = jiffies;
1425 save_car = cy_readb(base_addr+(CyCAR<<index));
1426 cy_writeb((u_long)base_addr+(CyCAR<<index), save_xir);
1428 mdm_change = cy_readb(base_addr+(CyMISR<<index));
1429 mdm_status = cy_readb(base_addr+(CyMSVR1<<index));
1431 if(info->tty == 0){/* no place for data, ignore it*/
1434 if (mdm_change & CyANY_DELTA) {
1435 /* For statistics only */
1436 if (mdm_change & CyDCD) info->icount.dcd++;
1437 if (mdm_change & CyCTS) info->icount.cts++;
1438 if (mdm_change & CyDSR) info->icount.dsr++;
1439 if (mdm_change & CyRI) info->icount.rng++;
1441 cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
1444 if((mdm_change & CyDCD)
1445 && (info->flags & ASYNC_CHECK_CD)){
1446 if(mdm_status & CyDCD){
1447 cy_sched_event(info,
1448 Cy_EVENT_OPEN_WAKEUP);
1450 cy_sched_event(info,
1454 if((mdm_change & CyCTS)
1455 && (info->flags & ASYNC_CTS_FLOW)){
1456 if(info->tty->hw_stopped){
1457 if(mdm_status & CyCTS){
1458 /* cy_start isn't used
1460 info->tty->hw_stopped = 0;
1461 cy_writeb((u_long)base_addr+(CySRER<<index),
1462 cy_readb(base_addr+(CySRER<<index)) |
1464 cy_sched_event(info,
1465 Cy_EVENT_WRITE_WAKEUP);
1468 if(!(mdm_status & CyCTS)){
1469 /* cy_stop isn't used
1471 info->tty->hw_stopped = 1;
1472 cy_writeb((u_long)base_addr+(CySRER<<index),
1473 cy_readb(base_addr+(CySRER<<index)) &
1478 if(mdm_change & CyDSR){
1480 if(mdm_change & CyRI){
1483 /* end of service */
1484 cy_writeb((u_long)base_addr+(CyMIR<<index),
1486 cy_writeb((u_long)base_addr+(CyCAR<<index), save_car);
1487 spin_unlock(&cinfo->card_lock);
1489 } /* end while status != 0 */
1490 } /* end loop for chips... */
1493 /* clear interrupts */
1494 spin_lock(&cinfo->card_lock);
1495 cy_writeb((u_long)card_base_addr + (Cy_ClrIntr<<index), 0);
1496 /* Cy_ClrIntr is 0x1800 */
1497 spin_unlock(&cinfo->card_lock);
1499 } /* cyy_interrupt */
1501 /***********************************************************/
1502 /********* End of block of Cyclom-Y specific code **********/
1503 /******** Start of block of Cyclades-Z specific code *********/
1504 /***********************************************************/
1507 cyz_fetch_msg( struct cyclades_card *cinfo,
1508 uclong *channel, ucchar *cmd, uclong *param)
1510 struct FIRM_ID *firm_id;
1511 struct ZFW_CTRL *zfw_ctrl;
1512 struct BOARD_CTRL *board_ctrl;
1513 unsigned long loc_doorbell;
1515 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1516 if (!ISZLOADED(*cinfo)){
1519 zfw_ctrl = (struct ZFW_CTRL *)
1521 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1522 board_ctrl = &zfw_ctrl->board_ctrl;
1524 loc_doorbell = cy_readl(&((struct RUNTIME_9060 *)
1525 (cinfo->ctl_addr))->loc_doorbell);
1527 *cmd = (char)(0xff & loc_doorbell);
1528 *channel = cy_readl(&board_ctrl->fwcmd_channel);
1529 *param = (uclong)cy_readl(&board_ctrl->fwcmd_param);
1530 cy_writel(&((struct RUNTIME_9060 *)(cinfo->ctl_addr))->loc_doorbell,
1535 } /* cyz_fetch_msg */
1538 cyz_issue_cmd( struct cyclades_card *cinfo,
1539 uclong channel, ucchar cmd, uclong param)
1541 struct FIRM_ID *firm_id;
1542 struct ZFW_CTRL *zfw_ctrl;
1543 struct BOARD_CTRL *board_ctrl;
1544 volatile uclong *pci_doorbell;
1547 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1548 if (!ISZLOADED(*cinfo)){
1551 zfw_ctrl = (struct ZFW_CTRL *)
1553 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1554 board_ctrl = &zfw_ctrl->board_ctrl;
1557 pci_doorbell = (uclong *)(&((struct RUNTIME_9060 *)
1558 (cinfo->ctl_addr))->pci_doorbell);
1559 while( (cy_readl(pci_doorbell) & 0xff) != 0){
1560 if (index++ == 1000){
1561 return((int)(cy_readl(pci_doorbell) & 0xff));
1565 cy_writel((u_long)&board_ctrl->hcmd_channel, channel);
1566 cy_writel((u_long)&board_ctrl->hcmd_param , param);
1567 cy_writel((u_long)pci_doorbell, (long)cmd);
1570 } /* cyz_issue_cmd */
1573 cyz_handle_rx(struct cyclades_port *info, volatile struct CH_CTRL *ch_ctrl,
1574 volatile struct BUF_CTRL *buf_ctrl)
1576 struct cyclades_card *cinfo = &cy_card[info->card];
1577 struct tty_struct *tty = info->tty;
1578 volatile int char_count;
1584 volatile uclong rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr;
1586 rx_get = new_rx_get = cy_readl(&buf_ctrl->rx_get);
1587 rx_put = cy_readl(&buf_ctrl->rx_put);
1588 rx_bufsize = cy_readl(&buf_ctrl->rx_bufsize);
1589 rx_bufaddr = cy_readl(&buf_ctrl->rx_bufaddr);
1590 if (rx_put >= rx_get)
1591 char_count = rx_put - rx_get;
1593 char_count = rx_put - rx_get + rx_bufsize;
1596 info->last_active = jiffies;
1597 info->jiffies[1] = jiffies;
1599 #ifdef CY_ENABLE_MONITORING
1600 info->mon.int_count++;
1601 info->mon.char_count += char_count;
1602 if (char_count > info->mon.char_max)
1603 info->mon.char_max = char_count;
1604 info->mon.char_last = char_count;
1607 /* flush received characters */
1608 new_rx_get = (new_rx_get + char_count) & (rx_bufsize - 1);
1609 info->rflush_count++;
1612 /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
1613 for performance, but because of buffer boundaries, there
1614 may be several steps to the operation */
1615 while(0 < (small_count =
1616 min_t(unsigned int, (rx_bufsize - new_rx_get),
1617 min_t(unsigned int, (TTY_FLIPBUF_SIZE - tty->flip.count), char_count))
1619 memcpy_fromio(tty->flip.char_buf_ptr,
1620 (char *)(cinfo->base_addr
1621 + rx_bufaddr + new_rx_get),
1624 tty->flip.char_buf_ptr += small_count;
1625 memset(tty->flip.flag_buf_ptr, TTY_NORMAL, small_count);
1626 tty->flip.flag_buf_ptr += small_count;
1627 new_rx_get = (new_rx_get + small_count) & (rx_bufsize - 1);
1628 char_count -= small_count;
1629 info->icount.rx += small_count;
1630 info->idle_stats.recv_bytes += small_count;
1631 tty->flip.count += small_count;
1634 while(char_count--){
1635 if (tty->flip.count >= N_TTY_BUF_SIZE - tty->read_cnt)
1638 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
1641 data = cy_readb(cinfo->base_addr + rx_bufaddr + new_rx_get);
1642 new_rx_get = (new_rx_get + 1) & (rx_bufsize - 1);
1644 *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
1645 *tty->flip.char_buf_ptr++ = data;
1646 info->idle_stats.recv_bytes++;
1650 #ifdef CONFIG_CYZ_INTR
1651 /* Recalculate the number of chars in the RX buffer and issue
1652 a cmd in case it's higher than the RX high water mark */
1653 rx_put = cy_readl(&buf_ctrl->rx_put);
1654 if (rx_put >= rx_get)
1655 char_count = rx_put - rx_get;
1657 char_count = rx_put - rx_get + rx_bufsize;
1658 if(char_count >= cy_readl(&buf_ctrl->rx_threshold)) {
1659 cy_sched_event(info, Cy_EVENT_Z_RX_FULL);
1662 info->idle_stats.recv_idle = jiffies;
1663 schedule_delayed_work(&tty->flip.work, 1);
1666 cy_writel(&buf_ctrl->rx_get, new_rx_get);
1671 cyz_handle_tx(struct cyclades_port *info, volatile struct CH_CTRL *ch_ctrl,
1672 volatile struct BUF_CTRL *buf_ctrl)
1674 struct cyclades_card *cinfo = &cy_card[info->card];
1675 struct tty_struct *tty = info->tty;
1677 volatile int char_count;
1681 volatile uclong tx_put, tx_get, tx_bufsize, tx_bufaddr;
1683 if (info->xmit_cnt <= 0) /* Nothing to transmit */
1686 tx_get = cy_readl(&buf_ctrl->tx_get);
1687 tx_put = cy_readl(&buf_ctrl->tx_put);
1688 tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize);
1689 tx_bufaddr = cy_readl(&buf_ctrl->tx_bufaddr);
1690 if (tx_put >= tx_get)
1691 char_count = tx_get - tx_put - 1 + tx_bufsize;
1693 char_count = tx_get - tx_put - 1;
1701 if(info->x_char) { /* send special char */
1702 data = info->x_char;
1704 cy_writeb((cinfo->base_addr + tx_bufaddr + tx_put), data);
1705 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1709 info->last_active = jiffies;
1710 info->jiffies[2] = jiffies;
1713 while(0 < (small_count =
1714 min_t(unsigned int, (tx_bufsize - tx_put),
1715 min_t(unsigned int, (SERIAL_XMIT_SIZE - info->xmit_tail),
1716 min_t(unsigned int, info->xmit_cnt, char_count))))) {
1718 memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put),
1719 &info->xmit_buf[info->xmit_tail],
1722 tx_put = (tx_put + small_count) & (tx_bufsize - 1);
1723 char_count -= small_count;
1724 info->icount.tx += small_count;
1725 info->xmit_cnt -= small_count;
1727 (info->xmit_tail + small_count) & (SERIAL_XMIT_SIZE - 1);
1728 info->last_active = jiffies;
1729 info->jiffies[2] = jiffies;
1732 while (info->xmit_cnt && char_count){
1733 data = info->xmit_buf[info->xmit_tail];
1735 info->xmit_tail = (info->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
1737 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1738 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1741 info->last_active = jiffies;
1742 info->jiffies[2] = jiffies;
1746 if (info->xmit_cnt < WAKEUP_CHARS) {
1747 cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
1750 cy_writel(&buf_ctrl->tx_put, tx_put);
1755 cyz_handle_cmd(struct cyclades_card *cinfo)
1757 struct tty_struct *tty;
1758 struct cyclades_port *info;
1759 static volatile struct FIRM_ID *firm_id;
1760 static volatile struct ZFW_CTRL *zfw_ctrl;
1761 static volatile struct BOARD_CTRL *board_ctrl;
1762 static volatile struct CH_CTRL *ch_ctrl;
1763 static volatile struct BUF_CTRL *buf_ctrl;
1767 uclong hw_ver, fw_ver;
1771 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1772 zfw_ctrl = (struct ZFW_CTRL *)
1774 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1775 board_ctrl = &(zfw_ctrl->board_ctrl);
1776 fw_ver = cy_readl(&board_ctrl->fw_version);
1777 hw_ver = cy_readl(&((struct RUNTIME_9060 *)(cinfo->ctl_addr))->mail_box_0);
1780 while(cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) {
1783 info = &cy_port[channel + cinfo->first_line];
1784 if((tty = info->tty) == 0) {
1787 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
1788 buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
1793 *tty->flip.flag_buf_ptr++ = TTY_PARITY;
1794 *tty->flip.char_buf_ptr++ = 0;
1800 *tty->flip.flag_buf_ptr++ = TTY_FRAME;
1801 *tty->flip.char_buf_ptr++ = 0;
1807 *tty->flip.flag_buf_ptr++ = TTY_BREAK;
1808 *tty->flip.char_buf_ptr++ = 0;
1815 if (info->flags & ASYNC_CHECK_CD){
1818 cy_readl(&ch_ctrl->rs_status)) & C_RS_DCD) {
1819 cy_sched_event(info, Cy_EVENT_OPEN_WAKEUP);
1821 cy_sched_event(info, Cy_EVENT_HANGUP);
1839 cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP);
1842 #ifdef CONFIG_CYZ_INTR
1846 /* Reception Interrupt */
1847 #ifdef CY_DEBUG_INTERRUPTS
1848 printk("cyz_interrupt: rcvd intr, card %d, port %ld\n\r",
1849 info->card, channel);
1851 cyz_handle_rx(info, ch_ctrl, buf_ctrl);
1856 /* Transmission Interrupt */
1857 #ifdef CY_DEBUG_INTERRUPTS
1858 printk("cyz_interrupt: xmit intr, card %d, port %ld\n\r",
1859 info->card, channel);
1861 cyz_handle_tx(info, ch_ctrl, buf_ctrl);
1863 #endif /* CONFIG_CYZ_INTR */
1865 /* should do something with this !!! */
1871 cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
1873 schedule_delayed_work(&tty->flip.work, 1);
1877 #ifdef CONFIG_CYZ_INTR
1879 cyz_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1881 struct cyclades_card *cinfo;
1883 if((cinfo = (struct cyclades_card *)dev_id) == 0){
1884 #ifdef CY_DEBUG_INTERRUPTS
1885 printk("cyz_interrupt: spurious interrupt %d\n\r", irq);
1887 return IRQ_NONE; /* spurious interrupt */
1890 if (!ISZLOADED(*cinfo)) {
1891 #ifdef CY_DEBUG_INTERRUPTS
1892 printk("cyz_interrupt: board not yet loaded (IRQ%d).\n\r", irq);
1897 /* Handle the interrupts */
1898 cyz_handle_cmd(cinfo);
1901 } /* cyz_interrupt */
1904 cyz_rx_restart(unsigned long arg)
1906 struct cyclades_port *info = (struct cyclades_port *)arg;
1908 int card = info->card;
1909 uclong channel = (info->line) - (cy_card[card].first_line);
1910 unsigned long flags;
1912 CY_LOCK(info, flags);
1913 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK2, 0L);
1915 printk("cyc:cyz_rx_restart retval on ttyC%d was %x\n",
1916 info->line, retval);
1918 cyz_rx_full_timer[info->line].function = NULL;
1919 CY_UNLOCK(info, flags);
1922 #else /* CONFIG_CYZ_INTR */
1925 cyz_poll(unsigned long arg)
1927 struct cyclades_card *cinfo;
1928 struct cyclades_port *info;
1929 struct tty_struct *tty;
1930 static volatile struct FIRM_ID *firm_id;
1931 static volatile struct ZFW_CTRL *zfw_ctrl;
1932 static volatile struct BOARD_CTRL *board_ctrl;
1933 static volatile struct CH_CTRL *ch_ctrl;
1934 static volatile struct BUF_CTRL *buf_ctrl;
1937 cyz_timerlist.expires = jiffies + (HZ);
1938 for (card = 0 ; card < NR_CARDS ; card++){
1939 cinfo = &cy_card[card];
1941 if (!IS_CYC_Z(*cinfo)) continue;
1942 if (!ISZLOADED(*cinfo)) continue;
1944 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1945 zfw_ctrl = (struct ZFW_CTRL *)
1947 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1948 board_ctrl = &(zfw_ctrl->board_ctrl);
1950 /* Skip first polling cycle to avoid racing conditions with the FW */
1951 if (!cinfo->intr_enabled) {
1952 cinfo->nports = (int) cy_readl(&board_ctrl->n_channel);
1953 cinfo->intr_enabled = 1;
1957 cyz_handle_cmd(cinfo);
1959 for (port = 0 ; port < cinfo->nports ; port++) {
1960 info = &cy_port[ port + cinfo->first_line ];
1962 ch_ctrl = &(zfw_ctrl->ch_ctrl[port]);
1963 buf_ctrl = &(zfw_ctrl->buf_ctrl[port]);
1965 if (!info->throttle)
1966 cyz_handle_rx(info, ch_ctrl, buf_ctrl);
1967 cyz_handle_tx(info, ch_ctrl, buf_ctrl);
1969 /* poll every 'cyz_polling_cycle' period */
1970 cyz_timerlist.expires = jiffies + cyz_polling_cycle;
1972 add_timer(&cyz_timerlist);
1977 #endif /* CONFIG_CYZ_INTR */
1979 /********** End of block of Cyclades-Z specific code *********/
1980 /***********************************************************/
1983 /* This is called whenever a port becomes active;
1984 interrupts are enabled and DTR & RTS are turned on.
1987 startup(struct cyclades_port * info)
1989 unsigned long flags;
1991 unsigned char *base_addr;
1992 int card,chip,channel,index;
1996 channel = (info->line) - (cy_card[card].first_line);
1998 page = get_zeroed_page(GFP_KERNEL);
2002 CY_LOCK(info, flags);
2004 if (info->flags & ASYNC_INITIALIZED){
2011 set_bit(TTY_IO_ERROR, &info->tty->flags);
2020 info->xmit_buf = (unsigned char *) page;
2022 CY_UNLOCK(info, flags);
2024 set_line_char(info);
2026 if (!IS_CYC_Z(cy_card[card])) {
2029 index = cy_card[card].bus_index;
2030 base_addr = (unsigned char*)
2031 (cy_card[card].base_addr + (cy_chip_offset[chip]<<index));
2033 #ifdef CY_DEBUG_OPEN
2034 printk("cyc startup card %d, chip %d, channel %d, base_addr %lx\n",
2035 card, chip, channel, (long)base_addr);/**/
2038 CY_LOCK(info, flags);
2040 cy_writeb((ulong)base_addr+(CyCAR<<index), (u_char)channel);
2042 cy_writeb((ulong)base_addr+(CyRTPR<<index), (info->default_timeout
2043 ? info->default_timeout : 0x02)); /* 10ms rx timeout */
2045 cyy_issue_cmd(base_addr,CyCHAN_CTL|CyENB_RCVR|CyENB_XMTR,index);
2047 cy_writeb((ulong)base_addr+(CyCAR<<index), (u_char)channel);
2048 cy_writeb((ulong)base_addr+(CyMSVR1<<index), CyRTS);
2049 cy_writeb((ulong)base_addr+(CyMSVR2<<index), CyDTR);
2052 printk("cyc:startup raising DTR\n");
2053 printk(" status: 0x%x, 0x%x\n",
2054 cy_readb(base_addr+(CyMSVR1<<index)),
2055 cy_readb(base_addr+(CyMSVR2<<index)));
2058 cy_writeb((u_long)base_addr+(CySRER<<index),
2059 cy_readb(base_addr+(CySRER<<index)) | CyRxData);
2060 info->flags |= ASYNC_INITIALIZED;
2063 clear_bit(TTY_IO_ERROR, &info->tty->flags);
2065 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
2066 info->breakon = info->breakoff = 0;
2067 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
2068 info->idle_stats.in_use =
2069 info->idle_stats.recv_idle =
2070 info->idle_stats.xmit_idle = jiffies;
2072 CY_UNLOCK(info, flags);
2075 struct FIRM_ID *firm_id;
2076 struct ZFW_CTRL *zfw_ctrl;
2077 struct BOARD_CTRL *board_ctrl;
2078 struct CH_CTRL *ch_ctrl;
2081 base_addr = (unsigned char*) (cy_card[card].base_addr);
2083 firm_id = (struct FIRM_ID *) (base_addr + ID_ADDRESS);
2084 if (!ISZLOADED(cy_card[card])){
2088 zfw_ctrl = (struct ZFW_CTRL *)
2089 (cy_card[card].base_addr +
2090 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2091 board_ctrl = &zfw_ctrl->board_ctrl;
2092 ch_ctrl = zfw_ctrl->ch_ctrl;
2094 #ifdef CY_DEBUG_OPEN
2095 printk("cyc startup Z card %d, channel %d, base_addr %lx\n",
2096 card, channel, (long)base_addr);/**/
2099 CY_LOCK(info, flags);
2101 cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE);
2103 #ifdef CONFIG_CYZ_INTR
2104 cy_writel(&ch_ctrl[channel].intr_enable,
2105 C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT|
2109 cy_writel(&ch_ctrl[channel].intr_enable,
2112 #endif /* CONFIG_CYZ_INTR */
2114 #ifdef CONFIG_CYZ_INTR
2115 cy_writel(&ch_ctrl[channel].intr_enable,
2116 C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT|
2119 cy_writel(&ch_ctrl[channel].intr_enable,
2121 #endif /* CONFIG_CYZ_INTR */
2124 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L);
2126 printk("cyc:startup(1) retval on ttyC%d was %x\n",
2127 info->line, retval);
2130 /* Flush RX buffers before raising DTR and RTS */
2131 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_RX, 0L);
2133 printk("cyc:startup(2) retval on ttyC%d was %x\n",
2134 info->line, retval);
2137 /* set timeout !!! */
2138 /* set RTS and DTR !!! */
2139 cy_writel(&ch_ctrl[channel].rs_control,
2140 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | C_RS_DTR) ;
2141 retval = cyz_issue_cmd(&cy_card[info->card],
2142 channel, C_CM_IOCTLM, 0L);
2144 printk("cyc:startup(3) retval on ttyC%d was %x\n",
2145 info->line, retval);
2148 printk("cyc:startup raising Z DTR\n");
2151 /* enable send, recv, modem !!! */
2153 info->flags |= ASYNC_INITIALIZED;
2155 clear_bit(TTY_IO_ERROR, &info->tty->flags);
2157 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
2158 info->breakon = info->breakoff = 0;
2159 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
2160 info->idle_stats.in_use =
2161 info->idle_stats.recv_idle =
2162 info->idle_stats.xmit_idle = jiffies;
2164 CY_UNLOCK(info, flags);
2167 #ifdef CY_DEBUG_OPEN
2168 printk(" cyc startup done\n");
2173 CY_UNLOCK(info, flags);
2179 start_xmit( struct cyclades_port *info )
2181 unsigned long flags;
2182 unsigned char *base_addr;
2183 int card,chip,channel,index;
2186 channel = (info->line) - (cy_card[card].first_line);
2187 if (!IS_CYC_Z(cy_card[card])) {
2190 index = cy_card[card].bus_index;
2191 base_addr = (unsigned char*)
2192 (cy_card[card].base_addr
2193 + (cy_chip_offset[chip]<<index));
2195 CY_LOCK(info, flags);
2196 cy_writeb((u_long)base_addr+(CyCAR<<index), channel);
2197 cy_writeb((u_long)base_addr+(CySRER<<index),
2198 cy_readb(base_addr+(CySRER<<index)) | CyTxRdy);
2199 CY_UNLOCK(info, flags);
2201 #ifdef CONFIG_CYZ_INTR
2204 CY_LOCK(info, flags);
2205 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK, 0L);
2207 printk("cyc:start_xmit retval on ttyC%d was %x\n",
2208 info->line, retval);
2210 CY_UNLOCK(info, flags);
2211 #else /* CONFIG_CYZ_INTR */
2212 /* Don't have to do anything at this time */
2213 #endif /* CONFIG_CYZ_INTR */
2218 * This routine shuts down a serial port; interrupts are disabled,
2219 * and DTR is dropped if the hangup on close termio flag is on.
2222 shutdown(struct cyclades_port * info)
2224 unsigned long flags;
2225 unsigned char *base_addr;
2226 int card,chip,channel,index;
2228 if (!(info->flags & ASYNC_INITIALIZED)){
2233 channel = info->line - cy_card[card].first_line;
2234 if (!IS_CYC_Z(cy_card[card])) {
2237 index = cy_card[card].bus_index;
2238 base_addr = (unsigned char*)
2239 (cy_card[card].base_addr
2240 + (cy_chip_offset[chip]<<index));
2242 #ifdef CY_DEBUG_OPEN
2243 printk("cyc shutdown Y card %d, chip %d, channel %d, base_addr %lx\n",
2244 card, chip, channel, (long)base_addr);
2247 CY_LOCK(info, flags);
2249 /* Clear delta_msr_wait queue to avoid mem leaks. */
2250 wake_up_interruptible(&info->delta_msr_wait);
2252 if (info->xmit_buf){
2253 unsigned char * temp;
2254 temp = info->xmit_buf;
2256 free_page((unsigned long) temp);
2258 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
2259 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
2260 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
2261 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
2263 printk("cyc shutdown dropping DTR\n");
2264 printk(" status: 0x%x, 0x%x\n",
2265 cy_readb(base_addr+(CyMSVR1<<index)),
2266 cy_readb(base_addr+(CyMSVR2<<index)));
2269 cyy_issue_cmd(base_addr,CyCHAN_CTL|CyDIS_RCVR,index);
2270 /* it may be appropriate to clear _XMIT at
2271 some later date (after testing)!!! */
2274 set_bit(TTY_IO_ERROR, &info->tty->flags);
2276 info->flags &= ~ASYNC_INITIALIZED;
2277 CY_UNLOCK(info, flags);
2279 struct FIRM_ID *firm_id;
2280 struct ZFW_CTRL *zfw_ctrl;
2281 struct BOARD_CTRL *board_ctrl;
2282 struct CH_CTRL *ch_ctrl;
2285 base_addr = (unsigned char*) (cy_card[card].base_addr);
2286 #ifdef CY_DEBUG_OPEN
2287 printk("cyc shutdown Z card %d, channel %d, base_addr %lx\n",
2288 card, channel, (long)base_addr);
2291 firm_id = (struct FIRM_ID *) (base_addr + ID_ADDRESS);
2292 if (!ISZLOADED(cy_card[card])) {
2296 zfw_ctrl = (struct ZFW_CTRL *)
2297 (cy_card[card].base_addr +
2298 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2299 board_ctrl = &(zfw_ctrl->board_ctrl);
2300 ch_ctrl = zfw_ctrl->ch_ctrl;
2302 CY_LOCK(info, flags);
2304 if (info->xmit_buf){
2305 unsigned char * temp;
2306 temp = info->xmit_buf;
2308 free_page((unsigned long) temp);
2311 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
2312 cy_writel((u_long)&ch_ctrl[channel].rs_control,
2313 (uclong)(cy_readl(&ch_ctrl[channel].rs_control) &
2314 ~(C_RS_RTS | C_RS_DTR)));
2315 retval = cyz_issue_cmd(&cy_card[info->card],
2316 channel, C_CM_IOCTLM, 0L);
2318 printk("cyc:shutdown retval on ttyC%d was %x\n",
2319 info->line, retval);
2322 printk("cyc:shutdown dropping Z DTR\n");
2327 set_bit(TTY_IO_ERROR, &info->tty->flags);
2329 info->flags &= ~ASYNC_INITIALIZED;
2331 CY_UNLOCK(info, flags);
2334 #ifdef CY_DEBUG_OPEN
2335 printk(" cyc shutdown done\n");
2342 * ------------------------------------------------------------
2343 * cy_open() and friends
2344 * ------------------------------------------------------------
2348 block_til_ready(struct tty_struct *tty, struct file * filp,
2349 struct cyclades_port *info)
2351 DECLARE_WAITQUEUE(wait, current);
2352 struct cyclades_card *cinfo;
2353 unsigned long flags;
2354 int chip, channel,index;
2358 cinfo = &cy_card[info->card];
2359 channel = info->line - cinfo->first_line;
2362 * If the device is in the middle of being closed, then block
2363 * until it's done, and then try again.
2365 if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
2366 if (info->flags & ASYNC_CLOSING) {
2367 interruptible_sleep_on(&info->close_wait);
2369 return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
2373 * If non-blocking mode is set, then make the check up front
2376 if ((filp->f_flags & O_NONBLOCK) ||
2377 (tty->flags & (1 << TTY_IO_ERROR))) {
2378 info->flags |= ASYNC_NORMAL_ACTIVE;
2383 * Block waiting for the carrier detect and the line to become
2384 * free (i.e., not in use by the callout). While we are in
2385 * this loop, info->count is dropped by one, so that
2386 * cy_close() knows when to free things. We restore it upon
2387 * exit, either normal or abnormal.
2390 add_wait_queue(&info->open_wait, &wait);
2391 #ifdef CY_DEBUG_OPEN
2392 printk("cyc block_til_ready before block: ttyC%d, count = %d\n",
2393 info->line, info->count);/**/
2395 CY_LOCK(info, flags);
2396 if (!tty_hung_up_p(filp))
2398 CY_UNLOCK(info, flags);
2399 #ifdef CY_DEBUG_COUNT
2400 printk("cyc block_til_ready: (%d): decrementing count to %d\n",
2401 current->pid, info->count);
2403 info->blocked_open++;
2405 if (!IS_CYC_Z(*cinfo)) {
2408 index = cinfo->bus_index;
2409 base_addr = (char *)(cinfo->base_addr
2410 + (cy_chip_offset[chip]<<index));
2413 CY_LOCK(info, flags);
2414 if ((tty->termios->c_cflag & CBAUD)){
2415 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
2416 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
2417 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
2419 printk("cyc:block_til_ready raising DTR\n");
2420 printk(" status: 0x%x, 0x%x\n",
2421 cy_readb(base_addr+(CyMSVR1<<index)),
2422 cy_readb(base_addr+(CyMSVR2<<index)));
2425 CY_UNLOCK(info, flags);
2427 set_current_state(TASK_INTERRUPTIBLE);
2428 if (tty_hung_up_p(filp)
2429 || !(info->flags & ASYNC_INITIALIZED) ){
2430 retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
2431 -EAGAIN : -ERESTARTSYS);
2435 CY_LOCK(info, flags);
2436 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
2437 if (!(info->flags & ASYNC_CLOSING)
2439 || (cy_readb(base_addr+(CyMSVR1<<index)) & CyDCD))) {
2440 CY_UNLOCK(info, flags);
2443 CY_UNLOCK(info, flags);
2445 if (signal_pending(current)) {
2446 retval = -ERESTARTSYS;
2449 #ifdef CY_DEBUG_OPEN
2450 printk("cyc block_til_ready blocking: ttyC%d, count = %d\n",
2451 info->line, info->count);/**/
2456 struct FIRM_ID *firm_id;
2457 struct ZFW_CTRL *zfw_ctrl;
2458 struct BOARD_CTRL *board_ctrl;
2459 struct CH_CTRL *ch_ctrl;
2462 base_addr = (char *)(cinfo->base_addr);
2463 firm_id = (struct FIRM_ID *)
2464 (base_addr + ID_ADDRESS);
2465 if (!ISZLOADED(*cinfo)){
2466 current->state = TASK_RUNNING;
2467 remove_wait_queue(&info->open_wait, &wait);
2471 zfw_ctrl = (struct ZFW_CTRL *)
2472 (base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2473 board_ctrl = &zfw_ctrl->board_ctrl;
2474 ch_ctrl = zfw_ctrl->ch_ctrl;
2477 if ((tty->termios->c_cflag & CBAUD)){
2478 cy_writel(&ch_ctrl[channel].rs_control,
2479 cy_readl(&ch_ctrl[channel].rs_control) |
2480 (C_RS_RTS | C_RS_DTR));
2481 retval = cyz_issue_cmd(&cy_card[info->card],
2482 channel, C_CM_IOCTLM, 0L);
2484 printk("cyc:block_til_ready retval on ttyC%d was %x\n",
2485 info->line, retval);
2488 printk("cyc:block_til_ready raising Z DTR\n");
2492 set_current_state(TASK_INTERRUPTIBLE);
2493 if (tty_hung_up_p(filp)
2494 || !(info->flags & ASYNC_INITIALIZED) ){
2495 retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
2496 -EAGAIN : -ERESTARTSYS);
2499 if (!(info->flags & ASYNC_CLOSING)
2501 || (cy_readl(&ch_ctrl[channel].rs_status) & C_RS_DCD))) {
2504 if (signal_pending(current)) {
2505 retval = -ERESTARTSYS;
2508 #ifdef CY_DEBUG_OPEN
2509 printk("cyc block_til_ready blocking: ttyC%d, count = %d\n",
2510 info->line, info->count);/**/
2515 current->state = TASK_RUNNING;
2516 remove_wait_queue(&info->open_wait, &wait);
2517 if (!tty_hung_up_p(filp)){
2519 #ifdef CY_DEBUG_COUNT
2520 printk("cyc:block_til_ready (%d): incrementing count to %d\n",
2521 current->pid, info->count);
2524 info->blocked_open--;
2525 #ifdef CY_DEBUG_OPEN
2526 printk("cyc:block_til_ready after blocking: ttyC%d, count = %d\n",
2527 info->line, info->count);/**/
2531 info->flags |= ASYNC_NORMAL_ACTIVE;
2533 } /* block_til_ready */
2537 * This routine is called whenever a serial port is opened. It
2538 * performs the serial-specific initialization for the tty structure.
2541 cy_open(struct tty_struct *tty, struct file * filp)
2543 struct cyclades_port *info;
2548 if ((line < 0) || (NR_PORTS <= line)){
2551 info = &cy_port[line];
2552 if (info->line < 0){
2556 /* If the card's firmware hasn't been loaded,
2557 treat it as absent from the system. This
2558 will make the user pay attention.
2560 if (IS_CYC_Z(cy_card[info->card])) {
2561 struct cyclades_card *cinfo = &cy_card[info->card];
2562 struct FIRM_ID *firm_id = (struct FIRM_ID *)
2563 (cinfo->base_addr + ID_ADDRESS);
2565 if (!ISZLOADED(*cinfo)) {
2566 if (((ZE_V1 ==cy_readl(&((struct RUNTIME_9060 *)
2567 (cinfo->ctl_addr))->mail_box_0)) &&
2568 Z_FPGA_CHECK (*cinfo)) &&
2569 (ZFIRM_HLT == cy_readl (&firm_id->signature)))
2571 printk ("cyc:Cyclades-Z Error: you need an external power supply for this number of ports.\n\rFirmware halted.\r\n");
2573 printk("cyc:Cyclades-Z firmware not yet loaded\n");
2577 #ifdef CONFIG_CYZ_INTR
2579 /* In case this Z board is operating in interrupt mode, its
2580 interrupts should be enabled as soon as the first open happens
2581 to one of its ports. */
2582 if (!cinfo->intr_enabled) {
2583 struct ZFW_CTRL *zfw_ctrl;
2584 struct BOARD_CTRL *board_ctrl;
2586 zfw_ctrl = (struct ZFW_CTRL *)
2588 (cy_readl (&firm_id->zfwctrl_addr) & 0xfffff));
2590 board_ctrl = &zfw_ctrl->board_ctrl;
2592 /* Enable interrupts on the PLX chip */
2593 cy_writew(cinfo->ctl_addr+0x68,
2594 cy_readw(cinfo->ctl_addr+0x68)|0x0900);
2595 /* Enable interrupts on the FW */
2596 retval = cyz_issue_cmd(cinfo,
2597 0, C_CM_IRQ_ENBL, 0L);
2599 printk("cyc:IRQ enable retval was %x\n", retval);
2601 cinfo->nports = (int) cy_readl (&board_ctrl->n_channel);
2602 cinfo->intr_enabled = 1;
2605 #endif /* CONFIG_CYZ_INTR */
2606 /* Make sure this Z port really exists in hardware */
2607 if (info->line > (cinfo->first_line + cinfo->nports - 1))
2610 #ifdef CY_DEBUG_OTHER
2611 printk("cyc:cy_open ttyC%d\n", info->line); /* */
2613 tty->driver_data = info;
2615 if (serial_paranoia_check(info, tty->name, "cy_open")){
2618 #ifdef CY_DEBUG_OPEN
2619 printk("cyc:cy_open ttyC%d, count = %d\n",
2620 info->line, info->count);/**/
2623 #ifdef CY_DEBUG_COUNT
2624 printk("cyc:cy_open (%d): incrementing count to %d\n",
2625 current->pid, info->count);
2628 page = get_zeroed_page(GFP_KERNEL);
2634 tmp_buf = (unsigned char *) page;
2638 * If the port is the middle of closing, bail out now
2640 if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
2641 if (info->flags & ASYNC_CLOSING)
2642 interruptible_sleep_on(&info->close_wait);
2643 return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
2647 * Start up serial port
2649 retval = startup(info);
2654 retval = block_til_ready(tty, filp, info);
2656 #ifdef CY_DEBUG_OPEN
2657 printk("cyc:cy_open returning after block_til_ready with %d\n",
2665 #ifdef CY_DEBUG_OPEN
2666 printk(" cyc:cy_open done\n");/**/
2674 * cy_wait_until_sent() --- wait until the transmitter is empty
2677 cy_wait_until_sent(struct tty_struct *tty, int timeout)
2679 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
2680 unsigned char *base_addr;
2681 int card,chip,channel,index;
2682 unsigned long orig_jiffies;
2683 signed long char_time;
2685 if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent"))
2688 if (info->xmit_fifo_size == 0)
2689 return; /* Just in case.... */
2692 orig_jiffies = jiffies;
2694 * Set the check interval to be 1/5 of the estimated time to
2695 * send a single character, and make it at least 1. The check
2696 * interval should also be less than the timeout.
2698 * Note: we have to use pretty tight timings here to satisfy
2701 char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
2702 char_time = char_time / 5;
2708 char_time = MIN(char_time, timeout);
2710 * If the transmitter hasn't cleared in twice the approximate
2711 * amount of time to send the entire FIFO, it probably won't
2712 * ever clear. This assumes the UART isn't doing flow
2713 * control, which is currently the case. Hence, if it ever
2714 * takes longer than info->timeout, this is probably due to a
2715 * UART bug of some kind. So, we clamp the timeout parameter at
2718 if (!timeout || timeout > 2*info->timeout)
2719 timeout = 2*info->timeout;
2720 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2721 printk("In cy_wait_until_sent(%d) check=%lu...", timeout, char_time);
2722 printk("jiff=%lu...", jiffies);
2725 channel = (info->line) - (cy_card[card].first_line);
2726 if (!IS_CYC_Z(cy_card[card])) {
2729 index = cy_card[card].bus_index;
2730 base_addr = (unsigned char *)
2731 (cy_card[card].base_addr + (cy_chip_offset[chip]<<index));
2732 while (cy_readb(base_addr+(CySRER<<index)) & CyTxRdy) {
2733 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2734 printk("Not clean (jiff=%lu)...", jiffies);
2736 current->state = TASK_INTERRUPTIBLE;
2737 schedule_timeout(char_time);
2738 if (signal_pending(current))
2740 if (timeout && time_after(jiffies, orig_jiffies + timeout))
2743 current->state = TASK_RUNNING;
2747 /* Run one more char cycle */
2748 current->state = TASK_INTERRUPTIBLE;
2749 schedule_timeout(char_time * 5);
2750 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2751 printk("Clean (jiff=%lu)...done\n", jiffies);
2756 * This routine is called when a particular tty device is closed.
2759 cy_close(struct tty_struct *tty, struct file *filp)
2761 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2762 unsigned long flags;
2764 #ifdef CY_DEBUG_OTHER
2765 printk("cyc:cy_close ttyC%d\n", info->line);
2768 if (!info || serial_paranoia_check(info, tty->name, "cy_close")){
2772 CY_LOCK(info, flags);
2773 /* If the TTY is being hung up, nothing to do */
2774 if (tty_hung_up_p(filp)) {
2775 CY_UNLOCK(info, flags);
2779 #ifdef CY_DEBUG_OPEN
2780 printk("cyc:cy_close ttyC%d, count = %d\n", info->line, info->count);
2782 if ((tty->count == 1) && (info->count != 1)) {
2784 * Uh, oh. tty->count is 1, which means that the tty
2785 * structure will be freed. Info->count should always
2786 * be one in these conditions. If it's greater than
2787 * one, we've got real problems, since it means the
2788 * serial port won't be shutdown.
2790 printk("cyc:cy_close: bad serial port count; tty->count is 1, "
2791 "info->count is %d\n", info->count);
2794 #ifdef CY_DEBUG_COUNT
2795 printk("cyc:cy_close at (%d): decrementing count to %d\n",
2796 current->pid, info->count - 1);
2798 if (--info->count < 0) {
2799 #ifdef CY_DEBUG_COUNT
2800 printk("cyc:cyc_close setting count to 0\n");
2805 CY_UNLOCK(info, flags);
2808 info->flags |= ASYNC_CLOSING;
2811 * Now we wait for the transmit buffer to clear; and we notify
2812 * the line discipline to only process XON/XOFF characters.
2815 CY_UNLOCK(info, flags);
2816 if (info->closing_wait != CY_CLOSING_WAIT_NONE) {
2817 tty_wait_until_sent(tty, info->closing_wait);
2819 CY_LOCK(info, flags);
2821 if (!IS_CYC_Z(cy_card[info->card])) {
2822 int channel = info->line - cy_card[info->card].first_line;
2823 int index = cy_card[info->card].bus_index;
2824 unsigned char *base_addr = (unsigned char *)
2825 (cy_card[info->card].base_addr +
2826 (cy_chip_offset[channel>>2] <<index));
2827 /* Stop accepting input */
2829 cy_writeb((ulong)base_addr+(CyCAR<<index), (u_char)channel);
2830 cy_writeb((u_long)base_addr+(CySRER<<index),
2831 cy_readb(base_addr+(CySRER<<index)) & ~CyRxData);
2832 if (info->flags & ASYNC_INITIALIZED) {
2833 /* Waiting for on-board buffers to be empty before closing
2835 CY_UNLOCK(info, flags);
2836 cy_wait_until_sent(tty, info->timeout);
2837 CY_LOCK(info, flags);
2841 /* Waiting for on-board buffers to be empty before closing the port */
2842 unsigned char *base_addr = (unsigned char *)
2843 cy_card[info->card].base_addr;
2844 struct FIRM_ID *firm_id = (struct FIRM_ID *) (base_addr + ID_ADDRESS);
2845 struct ZFW_CTRL *zfw_ctrl = (struct ZFW_CTRL *)
2846 (base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2847 struct CH_CTRL *ch_ctrl = zfw_ctrl->ch_ctrl;
2848 int channel = info->line - cy_card[info->card].first_line;
2851 if (cy_readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) {
2852 retval = cyz_issue_cmd(&cy_card[info->card], channel,
2855 printk("cyc:cy_close retval on ttyC%d was %x\n",
2856 info->line, retval);
2858 CY_UNLOCK(info, flags);
2859 interruptible_sleep_on(&info->shutdown_wait);
2860 CY_LOCK(info, flags);
2865 CY_UNLOCK(info, flags);
2867 if (tty->driver->flush_buffer)
2868 tty->driver->flush_buffer(tty);
2869 if (tty->ldisc.flush_buffer)
2870 tty->ldisc.flush_buffer(tty);
2871 CY_LOCK(info, flags);
2876 if (info->blocked_open) {
2877 CY_UNLOCK(info, flags);
2878 if (info->close_delay) {
2879 current->state = TASK_INTERRUPTIBLE;
2880 schedule_timeout(info->close_delay);
2882 wake_up_interruptible(&info->open_wait);
2883 CY_LOCK(info, flags);
2885 info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
2886 wake_up_interruptible(&info->close_wait);
2888 #ifdef CY_DEBUG_OTHER
2889 printk(" cyc:cy_close done\n");
2892 CY_UNLOCK(info, flags);
2897 /* This routine gets called when tty_write has put something into
2898 * the write_queue. The characters may come from user space or
2901 * This routine will return the number of characters actually
2902 * accepted for writing.
2904 * If the port is not already transmitting stuff, start it off by
2905 * enabling interrupts. The interrupt service routine will then
2906 * ensure that the characters are sent.
2907 * If the port is already active, there is no need to kick it.
2911 cy_write(struct tty_struct * tty, int from_user,
2912 const unsigned char *buf, int count)
2914 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2915 unsigned long flags;
2919 printk("cyc:cy_write ttyC%d\n", info->line); /* */
2922 if (serial_paranoia_check(info, tty->name, "cy_write")){
2926 if (!tty || !info->xmit_buf || !tmp_buf){
2935 c = MIN(count, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
2936 SERIAL_XMIT_SIZE - info->xmit_head));
2940 c -= copy_from_user(tmp_buf, buf, c);
2947 CY_LOCK(info, flags);
2948 c1 = MIN(c, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
2949 SERIAL_XMIT_SIZE - info->xmit_head));
2953 memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
2954 info->xmit_head = ((info->xmit_head + c) & (SERIAL_XMIT_SIZE-1));
2955 info->xmit_cnt += c;
2956 CY_UNLOCK(info, flags);
2963 CY_LOCK(info, flags);
2965 c = MIN(count, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
2966 SERIAL_XMIT_SIZE - info->xmit_head));
2971 memcpy(info->xmit_buf + info->xmit_head, buf, c);
2972 info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
2973 info->xmit_cnt += c;
2978 CY_UNLOCK(info, flags);
2981 info->idle_stats.xmit_bytes += ret;
2982 info->idle_stats.xmit_idle = jiffies;
2984 if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) {
2992 * This routine is called by the kernel to write a single
2993 * character to the tty device. If the kernel uses this routine,
2994 * it must call the flush_chars() routine (if defined) when it is
2995 * done stuffing characters into the driver. If there is no room
2996 * in the queue, the character is ignored.
2999 cy_put_char(struct tty_struct *tty, unsigned char ch)
3001 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
3002 unsigned long flags;
3005 printk("cyc:cy_put_char ttyC%d\n", info->line);
3008 if (serial_paranoia_check(info, tty->name, "cy_put_char"))
3011 if (!tty || !info->xmit_buf)
3014 CY_LOCK(info, flags);
3015 if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
3016 CY_UNLOCK(info, flags);
3020 info->xmit_buf[info->xmit_head++] = ch;
3021 info->xmit_head &= SERIAL_XMIT_SIZE - 1;
3023 info->idle_stats.xmit_bytes++;
3024 info->idle_stats.xmit_idle = jiffies;
3025 CY_UNLOCK(info, flags);
3030 * This routine is called by the kernel after it has written a
3031 * series of characters to the tty device using put_char().
3034 cy_flush_chars(struct tty_struct *tty)
3036 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
3039 printk("cyc:cy_flush_chars ttyC%d\n", info->line); /* */
3042 if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
3045 if (info->xmit_cnt <= 0 || tty->stopped
3046 || tty->hw_stopped || !info->xmit_buf)
3050 } /* cy_flush_chars */
3054 * This routine returns the numbers of characters the tty driver
3055 * will accept for queuing to be written. This number is subject
3056 * to change as output buffers get emptied, or if the output flow
3057 * control is activated.
3060 cy_write_room(struct tty_struct *tty)
3062 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
3066 printk("cyc:cy_write_room ttyC%d\n", info->line); /* */
3069 if (serial_paranoia_check(info, tty->name, "cy_write_room"))
3071 ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
3075 } /* cy_write_room */
3079 cy_chars_in_buffer(struct tty_struct *tty)
3081 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
3084 if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
3088 channel = (info->line) - (cy_card[card].first_line);
3090 #ifdef Z_EXT_CHARS_IN_BUFFER
3091 if (!IS_CYC_Z(cy_card[card])) {
3092 #endif /* Z_EXT_CHARS_IN_BUFFER */
3094 printk("cyc:cy_chars_in_buffer ttyC%d %d\n",
3095 info->line, info->xmit_cnt); /* */
3097 return info->xmit_cnt;
3098 #ifdef Z_EXT_CHARS_IN_BUFFER
3100 static volatile struct FIRM_ID *firm_id;
3101 static volatile struct ZFW_CTRL *zfw_ctrl;
3102 static volatile struct CH_CTRL *ch_ctrl;
3103 static volatile struct BUF_CTRL *buf_ctrl;
3105 volatile uclong tx_put, tx_get, tx_bufsize;
3107 firm_id = (struct FIRM_ID *)(cy_card[card].base_addr + ID_ADDRESS);
3108 zfw_ctrl = (struct ZFW_CTRL *)
3109 (cy_card[card].base_addr +
3110 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3111 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
3112 buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
3114 tx_get = cy_readl(&buf_ctrl->tx_get);
3115 tx_put = cy_readl(&buf_ctrl->tx_put);
3116 tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize);
3117 if (tx_put >= tx_get)
3118 char_count = tx_put - tx_get;
3120 char_count = tx_put - tx_get + tx_bufsize;
3122 printk("cyc:cy_chars_in_buffer ttyC%d %d\n",
3123 info->line, info->xmit_cnt + char_count); /* */
3125 return (info->xmit_cnt + char_count);
3127 #endif /* Z_EXT_CHARS_IN_BUFFER */
3128 } /* cy_chars_in_buffer */
3132 * ------------------------------------------------------------
3133 * cy_ioctl() and friends
3134 * ------------------------------------------------------------
3138 cyy_baud_calc(struct cyclades_port *info, uclong baud)
3140 int co, co_val, bpr;
3141 uclong cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : 25000000);
3144 info->tbpr = info->tco = info->rbpr = info->rco = 0;
3148 /* determine which prescaler to use */
3149 for (co = 4, co_val = 2048; co; co--, co_val >>= 2) {
3150 if (cy_clock / co_val / baud > 63)
3154 bpr = (cy_clock / co_val * 2 / baud + 1) / 2;
3158 info->tbpr = info->rbpr = bpr;
3159 info->tco = info->rco = co;
3163 * This routine finds or computes the various line characteristics.
3164 * It used to be called config_setup
3167 set_line_char(struct cyclades_port * info)
3169 unsigned long flags;
3170 unsigned char *base_addr;
3171 int card,chip,channel,index;
3172 unsigned cflag, iflag;
3173 unsigned short chip_number;
3174 int baud, baud_rate = 0;
3178 if (!info->tty || !info->tty->termios){
3181 if (info->line == -1){
3184 cflag = info->tty->termios->c_cflag;
3185 iflag = info->tty->termios->c_iflag;
3188 * Set up the tty->alt_speed kludge
3191 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
3192 info->tty->alt_speed = 57600;
3193 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
3194 info->tty->alt_speed = 115200;
3195 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
3196 info->tty->alt_speed = 230400;
3197 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
3198 info->tty->alt_speed = 460800;
3202 channel = (info->line) - (cy_card[card].first_line);
3203 chip_number = channel / 4;
3205 if (!IS_CYC_Z(cy_card[card])) {
3207 index = cy_card[card].bus_index;
3210 baud = tty_get_baud_rate(info->tty);
3211 if ((baud == 38400) &&
3212 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3213 if (info->custom_divisor)
3214 baud_rate = info->baud / info->custom_divisor;
3216 baud_rate = info->baud;
3217 } else if (baud > CD1400_MAX_SPEED) {
3218 baud = CD1400_MAX_SPEED;
3220 /* find the baud index */
3221 for (i = 0; i < 20; i++) {
3222 if (baud == baud_table[i]) {
3227 i = 19; /* CD1400_MAX_SPEED */
3230 if ((baud == 38400) &&
3231 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3232 cyy_baud_calc(info, baud_rate);
3234 if(info->chip_rev >= CD1400_REV_J) {
3235 /* It is a CD1400 rev. J or later */
3236 info->tbpr = baud_bpr_60[i]; /* Tx BPR */
3237 info->tco = baud_co_60[i]; /* Tx CO */
3238 info->rbpr = baud_bpr_60[i]; /* Rx BPR */
3239 info->rco = baud_co_60[i]; /* Rx CO */
3241 info->tbpr = baud_bpr_25[i]; /* Tx BPR */
3242 info->tco = baud_co_25[i]; /* Tx CO */
3243 info->rbpr = baud_bpr_25[i]; /* Rx BPR */
3244 info->rco = baud_co_25[i]; /* Rx CO */
3247 if (baud_table[i] == 134) {
3248 /* get it right for 134.5 baud */
3249 info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2;
3250 } else if ((baud == 38400) &&
3251 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3252 info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2;
3253 } else if (baud_table[i]) {
3254 info->timeout = (info->xmit_fifo_size*HZ*15/baud_table[i]) + 2;
3255 /* this needs to be propagated into the card info */
3259 /* By tradition (is it a standard?) a baud rate of zero
3260 implies the line should be/has been closed. A bit
3261 later in this routine such a test is performed. */
3263 /* byte size and parity */
3266 info->cor3 = (info->default_threshold
3267 ? info->default_threshold
3268 : baud_cor3[i]); /* receive threshold */
3270 switch(cflag & CSIZE){
3272 info->cor1 = Cy_5_BITS;
3275 info->cor1 = Cy_6_BITS;
3278 info->cor1 = Cy_7_BITS;
3281 info->cor1 = Cy_8_BITS;
3285 info->cor1 |= Cy_2_STOP;
3287 if (cflag & PARENB){
3288 if (cflag & PARODD){
3289 info->cor1 |= CyPARITY_O;
3291 info->cor1 |= CyPARITY_E;
3294 info->cor1 |= CyPARITY_NONE;
3297 /* CTS flow control flag */
3298 if (cflag & CRTSCTS){
3299 info->flags |= ASYNC_CTS_FLOW;
3300 info->cor2 |= CyCtsAE;
3302 info->flags &= ~ASYNC_CTS_FLOW;
3303 info->cor2 &= ~CyCtsAE;
3306 info->flags &= ~ASYNC_CHECK_CD;
3308 info->flags |= ASYNC_CHECK_CD;
3310 /***********************************************
3311 The hardware option, CyRtsAO, presents RTS when
3312 the chip has characters to send. Since most modems
3313 use RTS as reverse (inbound) flow control, this
3314 option is not used. If inbound flow control is
3315 necessary, DTR can be programmed to provide the
3316 appropriate signals for use with a non-standard
3317 cable. Contact Marcio Saito for details.
3318 ***********************************************/
3322 base_addr = (unsigned char*)
3323 (cy_card[card].base_addr
3324 + (cy_chip_offset[chip]<<index));
3326 CY_LOCK(info, flags);
3327 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3329 /* tx and rx baud rate */
3331 cy_writeb((u_long)base_addr+(CyTCOR<<index), info->tco);
3332 cy_writeb((u_long)base_addr+(CyTBPR<<index), info->tbpr);
3333 cy_writeb((u_long)base_addr+(CyRCOR<<index), info->rco);
3334 cy_writeb((u_long)base_addr+(CyRBPR<<index), info->rbpr);
3336 /* set line characteristics according configuration */
3338 cy_writeb((u_long)base_addr+(CySCHR1<<index),
3339 START_CHAR(info->tty));
3340 cy_writeb((u_long)base_addr+(CySCHR2<<index),
3341 STOP_CHAR(info->tty));
3342 cy_writeb((u_long)base_addr+(CyCOR1<<index), info->cor1);
3343 cy_writeb((u_long)base_addr+(CyCOR2<<index), info->cor2);
3344 cy_writeb((u_long)base_addr+(CyCOR3<<index), info->cor3);
3345 cy_writeb((u_long)base_addr+(CyCOR4<<index), info->cor4);
3346 cy_writeb((u_long)base_addr+(CyCOR5<<index), info->cor5);
3348 cyy_issue_cmd(base_addr,
3349 CyCOR_CHANGE|CyCOR1ch|CyCOR2ch|CyCOR3ch,index);
3351 cy_writeb((u_long)base_addr+(CyCAR<<index),
3352 (u_char)channel); /* !!! Is this needed? */
3353 cy_writeb((u_long)base_addr+(CyRTPR<<index), (info->default_timeout
3354 ? info->default_timeout
3355 : 0x02)); /* 10ms rx timeout */
3357 if (C_CLOCAL(info->tty)) {
3358 /* without modem intr */
3359 cy_writeb((u_long)base_addr+(CySRER<<index),
3360 cy_readb(base_addr+(CySRER<<index)) | CyMdmCh);
3361 /* act on 1->0 modem transitions */
3362 if ((cflag & CRTSCTS) && info->rflow) {
3363 cy_writeb((u_long)base_addr+(CyMCOR1<<index),
3364 (CyCTS|rflow_thr[i]));
3366 cy_writeb((u_long)base_addr+(CyMCOR1<<index), CyCTS);
3368 /* act on 0->1 modem transitions */
3369 cy_writeb((u_long)base_addr+(CyMCOR2<<index), CyCTS);
3371 /* without modem intr */
3372 cy_writeb((u_long)base_addr+(CySRER<<index),
3373 cy_readb(base_addr+(CySRER<<index)) | CyMdmCh);
3374 /* act on 1->0 modem transitions */
3375 if ((cflag & CRTSCTS) && info->rflow) {
3376 cy_writeb((u_long)base_addr+(CyMCOR1<<index),
3377 (CyDSR|CyCTS|CyRI|CyDCD|rflow_thr[i]));
3379 cy_writeb((u_long)base_addr+(CyMCOR1<<index),
3380 CyDSR|CyCTS|CyRI|CyDCD);
3382 /* act on 0->1 modem transitions */
3383 cy_writeb((u_long)base_addr+(CyMCOR2<<index),
3384 CyDSR|CyCTS|CyRI|CyDCD);
3387 if(i == 0){ /* baud rate is zero, turn off line */
3388 if (info->rtsdtr_inv) {
3389 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
3391 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
3394 printk("cyc:set_line_char dropping DTR\n");
3395 printk(" status: 0x%x, 0x%x\n",
3396 cy_readb(base_addr+(CyMSVR1<<index)),
3397 cy_readb(base_addr+(CyMSVR2<<index)));
3400 if (info->rtsdtr_inv) {
3401 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
3403 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
3406 printk("cyc:set_line_char raising DTR\n");
3407 printk(" status: 0x%x, 0x%x\n",
3408 cy_readb(base_addr+(CyMSVR1<<index)),
3409 cy_readb(base_addr+(CyMSVR2<<index)));
3414 clear_bit(TTY_IO_ERROR, &info->tty->flags);
3416 CY_UNLOCK(info, flags);
3419 struct FIRM_ID *firm_id;
3420 struct ZFW_CTRL *zfw_ctrl;
3421 struct BOARD_CTRL *board_ctrl;
3422 struct CH_CTRL *ch_ctrl;
3423 struct BUF_CTRL *buf_ctrl;
3427 firm_id = (struct FIRM_ID *)
3428 (cy_card[card].base_addr + ID_ADDRESS);
3429 if (!ISZLOADED(cy_card[card])) {
3433 zfw_ctrl = (struct ZFW_CTRL *)
3434 (cy_card[card].base_addr +
3435 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3436 board_ctrl = &zfw_ctrl->board_ctrl;
3437 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
3438 buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
3441 baud = tty_get_baud_rate(info->tty);
3442 if ((baud == 38400) &&
3443 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3444 if (info->custom_divisor)
3445 baud_rate = info->baud / info->custom_divisor;
3447 baud_rate = info->baud;
3448 } else if (baud > CYZ_MAX_SPEED) {
3449 baud = CYZ_MAX_SPEED;
3451 cy_writel(&ch_ctrl->comm_baud , baud);
3454 /* get it right for 134.5 baud */
3455 info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2;
3456 } else if ((baud == 38400) &&
3457 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3458 info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2;
3460 info->timeout = (info->xmit_fifo_size*HZ*15/baud) + 2;
3461 /* this needs to be propagated into the card info */
3466 /* byte size and parity */
3467 switch(cflag & CSIZE){
3468 case CS5: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS5); break;
3469 case CS6: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS6); break;
3470 case CS7: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS7); break;
3471 case CS8: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS8); break;
3474 cy_writel(&ch_ctrl->comm_data_l,
3475 cy_readl(&ch_ctrl->comm_data_l) | C_DL_2STOP);
3477 cy_writel(&ch_ctrl->comm_data_l,
3478 cy_readl(&ch_ctrl->comm_data_l) | C_DL_1STOP);
3480 if (cflag & PARENB){
3481 if (cflag & PARODD){
3482 cy_writel(&ch_ctrl->comm_parity , C_PR_ODD);
3484 cy_writel(&ch_ctrl->comm_parity , C_PR_EVEN);
3487 cy_writel(&ch_ctrl->comm_parity , C_PR_NONE);
3490 /* CTS flow control flag */
3491 if (cflag & CRTSCTS){
3492 cy_writel(&ch_ctrl->hw_flow,
3493 cy_readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS);
3495 cy_writel(&ch_ctrl->hw_flow,
3496 cy_readl(&ch_ctrl->hw_flow) & ~(C_RS_CTS | C_RS_RTS));
3498 /* As the HW flow control is done in firmware, the driver doesn't
3499 need to care about it */
3500 info->flags &= ~ASYNC_CTS_FLOW;
3502 /* XON/XOFF/XANY flow control flags */
3505 sw_flow |= C_FL_OXX;
3507 sw_flow |= C_FL_OIXANY;
3509 cy_writel(&ch_ctrl->sw_flow, sw_flow);
3511 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L);
3513 printk("cyc:set_line_char retval on ttyC%d was %x\n",
3514 info->line, retval);
3517 /* CD sensitivity */
3518 if (cflag & CLOCAL){
3519 info->flags &= ~ASYNC_CHECK_CD;
3521 info->flags |= ASYNC_CHECK_CD;
3524 if(baud == 0){ /* baud rate is zero, turn off line */
3525 cy_writel(&ch_ctrl->rs_control,
3526 cy_readl(&ch_ctrl->rs_control) & ~C_RS_DTR);
3528 printk("cyc:set_line_char dropping Z DTR\n");
3531 cy_writel(&ch_ctrl->rs_control,
3532 cy_readl(&ch_ctrl->rs_control) | C_RS_DTR);
3534 printk("cyc:set_line_char raising Z DTR\n");
3538 retval = cyz_issue_cmd( &cy_card[card], channel, C_CM_IOCTLM, 0L);
3540 printk("cyc:set_line_char(2) retval on ttyC%d was %x\n",
3541 info->line, retval);
3545 clear_bit(TTY_IO_ERROR, &info->tty->flags);
3548 } /* set_line_char */
3552 get_serial_info(struct cyclades_port * info,
3553 struct serial_struct * retinfo)
3555 struct serial_struct tmp;
3556 struct cyclades_card *cinfo = &cy_card[info->card];
3560 memset(&tmp, 0, sizeof(tmp));
3561 tmp.type = info->type;
3562 tmp.line = info->line;
3563 tmp.port = info->card * 0x100 + info->line - cinfo->first_line;
3564 tmp.irq = cinfo->irq;
3565 tmp.flags = info->flags;
3566 tmp.close_delay = info->close_delay;
3567 tmp.baud_base = info->baud;
3568 tmp.custom_divisor = info->custom_divisor;
3569 tmp.hub6 = 0; /*!!!*/
3570 return copy_to_user(retinfo,&tmp,sizeof(*retinfo))?-EFAULT:0;
3571 } /* get_serial_info */
3575 set_serial_info(struct cyclades_port * info,
3576 struct serial_struct * new_info)
3578 struct serial_struct new_serial;
3579 struct cyclades_port old_info;
3581 if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
3585 if (!capable(CAP_SYS_ADMIN)) {
3586 if ((new_serial.close_delay != info->close_delay) ||
3587 (new_serial.baud_base != info->baud) ||
3588 ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) !=
3589 (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)))
3591 info->flags = ((info->flags & ~ASYNC_USR_MASK) |
3592 (new_serial.flags & ASYNC_USR_MASK));
3593 info->baud = new_serial.baud_base;
3594 info->custom_divisor = new_serial.custom_divisor;
3595 goto check_and_exit;
3600 * OK, past this point, all the error checking has been done.
3601 * At this point, we start making changes.....
3604 info->baud = new_serial.baud_base;
3605 info->custom_divisor = new_serial.custom_divisor;
3606 info->flags = ((info->flags & ~ASYNC_FLAGS) |
3607 (new_serial.flags & ASYNC_FLAGS));
3608 info->close_delay = new_serial.close_delay * HZ/100;
3609 info->closing_wait = new_serial.closing_wait * HZ/100;
3612 if (info->flags & ASYNC_INITIALIZED){
3613 set_line_char(info);
3616 return startup(info);
3618 } /* set_serial_info */
3621 * get_lsr_info - get line status register info
3623 * Purpose: Let user call ioctl() to get info when the UART physically
3624 * is emptied. On bus types like RS485, the transmitter must
3625 * release the bus after transmitting. This must be done when
3626 * the transmit shift register is empty, not be done when the
3627 * transmit holding register is empty. This functionality
3628 * allows an RS485 driver to be written in user space.
3630 static int get_lsr_info(struct cyclades_port *info, unsigned int *value)
3632 int card, chip, channel, index;
3633 unsigned char status;
3634 unsigned int result;
3635 unsigned long flags;
3636 unsigned char *base_addr;
3639 channel = (info->line) - (cy_card[card].first_line);
3640 if (!IS_CYC_Z(cy_card[card])) {
3643 index = cy_card[card].bus_index;
3644 base_addr = (unsigned char *)
3645 (cy_card[card].base_addr + (cy_chip_offset[chip]<<index));
3647 CY_LOCK(info, flags);
3648 status = cy_readb(base_addr+(CySRER<<index)) & (CyTxRdy|CyTxMpty);
3649 CY_UNLOCK(info, flags);
3650 result = (status ? 0 : TIOCSER_TEMT);
3652 /* Not supported yet */
3655 return cy_put_user(result, (unsigned long *) value);
3659 cy_tiocmget(struct tty_struct *tty, struct file *file)
3661 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3662 int card,chip,channel,index;
3663 unsigned char *base_addr;
3664 unsigned long flags;
3665 unsigned char status;
3666 unsigned long lstatus;
3667 unsigned int result;
3668 struct FIRM_ID *firm_id;
3669 struct ZFW_CTRL *zfw_ctrl;
3670 struct BOARD_CTRL *board_ctrl;
3671 struct CH_CTRL *ch_ctrl;
3673 if (serial_paranoia_check(info, tty->name, __FUNCTION__))
3677 channel = (info->line) - (cy_card[card].first_line);
3678 if (!IS_CYC_Z(cy_card[card])) {
3681 index = cy_card[card].bus_index;
3682 base_addr = (unsigned char*)
3683 (cy_card[card].base_addr
3684 + (cy_chip_offset[chip]<<index));
3686 CY_LOCK(info, flags);
3687 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3688 status = cy_readb(base_addr+(CyMSVR1<<index));
3689 status |= cy_readb(base_addr+(CyMSVR2<<index));
3690 CY_UNLOCK(info, flags);
3692 if (info->rtsdtr_inv) {
3693 result = ((status & CyRTS) ? TIOCM_DTR : 0)
3694 | ((status & CyDTR) ? TIOCM_RTS : 0);
3696 result = ((status & CyRTS) ? TIOCM_RTS : 0)
3697 | ((status & CyDTR) ? TIOCM_DTR : 0);
3699 result |= ((status & CyDCD) ? TIOCM_CAR : 0)
3700 | ((status & CyRI) ? TIOCM_RNG : 0)
3701 | ((status & CyDSR) ? TIOCM_DSR : 0)
3702 | ((status & CyCTS) ? TIOCM_CTS : 0);
3704 base_addr = (unsigned char*) (cy_card[card].base_addr);
3706 if (cy_card[card].num_chips != -1){
3710 firm_id = (struct FIRM_ID *)
3711 (cy_card[card].base_addr + ID_ADDRESS);
3712 if (ISZLOADED(cy_card[card])) {
3713 zfw_ctrl = (struct ZFW_CTRL *)
3714 (cy_card[card].base_addr +
3715 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3716 board_ctrl = &zfw_ctrl->board_ctrl;
3717 ch_ctrl = zfw_ctrl->ch_ctrl;
3718 lstatus = cy_readl(&ch_ctrl[channel].rs_status);
3719 result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0)
3720 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0)
3721 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0)
3722 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0)
3723 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0)
3724 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
3736 cy_tiocmset(struct tty_struct *tty, struct file *file,
3737 unsigned int set, unsigned int clear)
3739 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3740 int card,chip,channel,index;
3741 unsigned char *base_addr;
3742 unsigned long flags;
3743 struct FIRM_ID *firm_id;
3744 struct ZFW_CTRL *zfw_ctrl;
3745 struct BOARD_CTRL *board_ctrl;
3746 struct CH_CTRL *ch_ctrl;
3749 if (serial_paranoia_check(info, tty->name, __FUNCTION__))
3753 channel = (info->line) - (cy_card[card].first_line);
3754 if (!IS_CYC_Z(cy_card[card])) {
3757 index = cy_card[card].bus_index;
3758 base_addr = (unsigned char*)
3759 (cy_card[card].base_addr
3760 + (cy_chip_offset[chip]<<index));
3762 if (set & TIOCM_RTS){
3763 CY_LOCK(info, flags);
3764 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3765 if (info->rtsdtr_inv) {
3766 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
3768 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
3770 CY_UNLOCK(info, flags);
3772 if (clear & TIOCM_RTS) {
3773 CY_LOCK(info, flags);
3774 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3775 if (info->rtsdtr_inv) {
3776 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
3778 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
3780 CY_UNLOCK(info, flags);
3782 if (set & TIOCM_DTR){
3783 CY_LOCK(info, flags);
3784 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3785 if (info->rtsdtr_inv) {
3786 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
3788 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
3791 printk("cyc:set_modem_info raising DTR\n");
3792 printk(" status: 0x%x, 0x%x\n",
3793 cy_readb(base_addr+(CyMSVR1<<index)),
3794 cy_readb(base_addr+(CyMSVR2<<index)));
3796 CY_UNLOCK(info, flags);
3798 if (clear & TIOCM_DTR) {
3799 CY_LOCK(info, flags);
3800 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3801 if (info->rtsdtr_inv) {
3802 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
3804 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
3808 printk("cyc:set_modem_info dropping DTR\n");
3809 printk(" status: 0x%x, 0x%x\n",
3810 cy_readb(base_addr+(CyMSVR1<<index)),
3811 cy_readb(base_addr+(CyMSVR2<<index)));
3813 CY_UNLOCK(info, flags);
3816 base_addr = (unsigned char*) (cy_card[card].base_addr);
3818 firm_id = (struct FIRM_ID *)
3819 (cy_card[card].base_addr + ID_ADDRESS);
3820 if (ISZLOADED(cy_card[card])) {
3821 zfw_ctrl = (struct ZFW_CTRL *)
3822 (cy_card[card].base_addr +
3823 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3824 board_ctrl = &zfw_ctrl->board_ctrl;
3825 ch_ctrl = zfw_ctrl->ch_ctrl;
3827 if (set & TIOCM_RTS){
3828 CY_LOCK(info, flags);
3829 cy_writel(&ch_ctrl[channel].rs_control,
3830 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS);
3831 CY_UNLOCK(info, flags);
3833 if (clear & TIOCM_RTS) {
3834 CY_LOCK(info, flags);
3835 cy_writel(&ch_ctrl[channel].rs_control,
3836 cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_RTS);
3837 CY_UNLOCK(info, flags);
3839 if (set & TIOCM_DTR){
3840 CY_LOCK(info, flags);
3841 cy_writel(&ch_ctrl[channel].rs_control,
3842 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_DTR);
3844 printk("cyc:set_modem_info raising Z DTR\n");
3846 CY_UNLOCK(info, flags);
3848 if (clear & TIOCM_DTR) {
3849 CY_LOCK(info, flags);
3850 cy_writel(&ch_ctrl[channel].rs_control,
3851 cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_DTR);
3853 printk("cyc:set_modem_info clearing Z DTR\n");
3855 CY_UNLOCK(info, flags);
3860 CY_LOCK(info, flags);
3861 retval = cyz_issue_cmd(&cy_card[info->card],
3862 channel, C_CM_IOCTLM,0L);
3864 printk("cyc:set_modem_info retval on ttyC%d was %x\n",
3865 info->line, retval);
3867 CY_UNLOCK(info, flags);
3873 * cy_break() --- routine which turns the break handling on or off
3876 cy_break(struct tty_struct *tty, int break_state)
3878 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3879 unsigned long flags;
3881 if (serial_paranoia_check(info, tty->name, "cy_break"))
3884 CY_LOCK(info, flags);
3885 if (!IS_CYC_Z(cy_card[info->card])) {
3886 /* Let the transmit ISR take care of this (since it
3887 requires stuffing characters into the output stream).
3889 if (break_state == -1) {
3890 if (!info->breakon) {
3892 if (!info->xmit_cnt) {
3893 CY_UNLOCK(info, flags);
3895 CY_LOCK(info, flags);
3899 if (!info->breakoff) {
3901 if (!info->xmit_cnt) {
3902 CY_UNLOCK(info, flags);
3904 CY_LOCK(info, flags);
3911 if (break_state == -1) {
3912 retval = cyz_issue_cmd(&cy_card[info->card],
3913 (info->line) - (cy_card[info->card].first_line),
3914 C_CM_SET_BREAK, 0L);
3916 printk("cyc:cy_break (set) retval on ttyC%d was %x\n",
3917 info->line, retval);
3920 retval = cyz_issue_cmd(&cy_card[info->card],
3921 (info->line) - (cy_card[info->card].first_line),
3922 C_CM_CLR_BREAK, 0L);
3924 printk("cyc:cy_break (clr) retval on ttyC%d was %x\n",
3925 info->line, retval);
3929 CY_UNLOCK(info, flags);
3933 get_mon_info(struct cyclades_port * info, struct cyclades_monitor * mon)
3936 if(copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor)))
3938 info->mon.int_count = 0;
3939 info->mon.char_count = 0;
3940 info->mon.char_max = 0;
3941 info->mon.char_last = 0;
3947 set_threshold(struct cyclades_port * info, unsigned long value)
3949 unsigned char *base_addr;
3950 int card,channel,chip,index;
3951 unsigned long flags;
3954 channel = info->line - cy_card[card].first_line;
3955 if (!IS_CYC_Z(cy_card[card])) {
3958 index = cy_card[card].bus_index;
3959 base_addr = (unsigned char*)
3960 (cy_card[card].base_addr
3961 + (cy_chip_offset[chip]<<index));
3963 info->cor3 &= ~CyREC_FIFO;
3964 info->cor3 |= value & CyREC_FIFO;
3966 CY_LOCK(info, flags);
3967 cy_writeb((u_long)base_addr+(CyCOR3<<index), info->cor3);
3968 cyy_issue_cmd(base_addr,CyCOR_CHANGE|CyCOR3ch,index);
3969 CY_UNLOCK(info, flags);
3974 }/* set_threshold */
3978 get_threshold(struct cyclades_port * info, unsigned long *value)
3980 unsigned char *base_addr;
3981 int card,channel,chip,index;
3985 channel = info->line - cy_card[card].first_line;
3986 if (!IS_CYC_Z(cy_card[card])) {
3989 index = cy_card[card].bus_index;
3990 base_addr = (unsigned char*)
3991 (cy_card[card].base_addr
3992 + (cy_chip_offset[chip]<<index));
3994 tmp = cy_readb(base_addr+(CyCOR3<<index)) & CyREC_FIFO;
3995 return cy_put_user(tmp,value);
4000 }/* get_threshold */
4004 set_default_threshold(struct cyclades_port * info, unsigned long value)
4006 info->default_threshold = value & 0x0f;
4008 }/* set_default_threshold */
4012 get_default_threshold(struct cyclades_port * info, unsigned long *value)
4014 return cy_put_user(info->default_threshold,value);
4015 }/* get_default_threshold */
4019 set_timeout(struct cyclades_port * info, unsigned long value)
4021 unsigned char *base_addr;
4022 int card,channel,chip,index;
4023 unsigned long flags;
4026 channel = info->line - cy_card[card].first_line;
4027 if (!IS_CYC_Z(cy_card[card])) {
4030 index = cy_card[card].bus_index;
4031 base_addr = (unsigned char*)
4032 (cy_card[card].base_addr
4033 + (cy_chip_offset[chip]<<index));
4035 CY_LOCK(info, flags);
4036 cy_writeb((u_long)base_addr+(CyRTPR<<index), value & 0xff);
4037 CY_UNLOCK(info, flags);
4046 get_timeout(struct cyclades_port * info, unsigned long *value)
4048 unsigned char *base_addr;
4049 int card,channel,chip,index;
4053 channel = info->line - cy_card[card].first_line;
4054 if (!IS_CYC_Z(cy_card[card])) {
4057 index = cy_card[card].bus_index;
4058 base_addr = (unsigned char*)
4059 (cy_card[card].base_addr
4060 + (cy_chip_offset[chip]<<index));
4062 tmp = cy_readb(base_addr+(CyRTPR<<index));
4063 return cy_put_user(tmp,value);
4072 set_default_timeout(struct cyclades_port * info, unsigned long value)
4074 info->default_timeout = value & 0xff;
4076 }/* set_default_timeout */
4080 get_default_timeout(struct cyclades_port * info, unsigned long *value)
4082 return cy_put_user(info->default_timeout,value);
4083 }/* get_default_timeout */
4086 * This routine allows the tty driver to implement device-
4087 * specific ioctl's. If the ioctl number passed in cmd is
4088 * not recognized by the driver, it should return ENOIOCTLCMD.
4091 cy_ioctl(struct tty_struct *tty, struct file * file,
4092 unsigned int cmd, unsigned long arg)
4094 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
4095 struct cyclades_icount cprev, cnow; /* kernel counter temps */
4096 struct serial_icounter_struct *p_cuser; /* user space */
4098 unsigned long flags;
4100 if (serial_paranoia_check(info, tty->name, "cy_ioctl"))
4103 #ifdef CY_DEBUG_OTHER
4104 printk("cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
4105 info->line, cmd, arg); /* */
4110 ret_val = get_mon_info(info, (struct cyclades_monitor *)arg);
4113 ret_val = get_threshold(info, (unsigned long *)arg);
4116 ret_val = set_threshold(info, (unsigned long)arg);
4118 case CYGETDEFTHRESH:
4119 ret_val = get_default_threshold(info, (unsigned long *)arg);
4121 case CYSETDEFTHRESH:
4122 ret_val = set_default_threshold(info, (unsigned long)arg);
4125 ret_val = get_timeout(info, (unsigned long *)arg);
4128 ret_val = set_timeout(info, (unsigned long)arg);
4130 case CYGETDEFTIMEOUT:
4131 ret_val = get_default_timeout(info, (unsigned long *)arg);
4133 case CYSETDEFTIMEOUT:
4134 ret_val = set_default_timeout(info, (unsigned long)arg);
4137 info->rflow = (int)arg;
4141 ret_val = info->rflow;
4143 case CYSETRTSDTR_INV:
4144 info->rtsdtr_inv = (int)arg;
4147 case CYGETRTSDTR_INV:
4148 ret_val = info->rtsdtr_inv;
4151 if (copy_to_user((void *)arg, (void *)&cy_card[info->card],
4152 sizeof (struct cyclades_card))) {
4158 case CYGETCD1400VER:
4159 ret_val = info->chip_rev;
4161 #ifndef CONFIG_CYZ_INTR
4162 case CYZSETPOLLCYCLE:
4163 cyz_polling_cycle = (arg * HZ) / 1000;
4166 case CYZGETPOLLCYCLE:
4167 ret_val = (cyz_polling_cycle * 1000) / HZ;
4169 #endif /* CONFIG_CYZ_INTR */
4171 info->closing_wait = (unsigned short)arg * HZ/100;
4175 ret_val = info->closing_wait / (HZ/100);
4178 ret_val = get_serial_info(info, (struct serial_struct *) arg);
4181 ret_val = set_serial_info(info, (struct serial_struct *) arg);
4183 case TIOCSERGETLSR: /* Get line status register */
4184 ret_val = get_lsr_info(info, (unsigned int *) arg);
4187 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
4188 * - mask passed in arg for lines of interest
4189 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
4190 * Caller should use TIOCGICOUNT to see which one it was
4193 CY_LOCK(info, flags);
4194 /* note the counters on entry */
4195 cprev = info->icount;
4196 CY_UNLOCK(info, flags);
4198 interruptible_sleep_on(&info->delta_msr_wait);
4199 /* see if a signal did it */
4200 if (signal_pending(current)) {
4201 return -ERESTARTSYS;
4204 CY_LOCK(info, flags);
4205 cnow = info->icount; /* atomic copy */
4206 CY_UNLOCK(info, flags);
4208 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
4209 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
4210 return -EIO; /* no change => error */
4212 if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
4213 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
4214 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
4215 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
4223 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
4224 * Return: write counters to the user passed counter struct
4225 * NB: both 1->0 and 0->1 transitions are counted except for
4226 * RI where only 0->1 is counted.
4229 CY_LOCK(info, flags);
4230 cnow = info->icount;
4231 CY_UNLOCK(info, flags);
4232 p_cuser = (struct serial_icounter_struct *) arg;
4233 ret_val = put_user(cnow.cts, &p_cuser->cts);
4234 if (ret_val) return ret_val;
4235 ret_val = put_user(cnow.dsr, &p_cuser->dsr);
4236 if (ret_val) return ret_val;
4237 ret_val = put_user(cnow.rng, &p_cuser->rng);
4238 if (ret_val) return ret_val;
4239 ret_val = put_user(cnow.dcd, &p_cuser->dcd);
4240 if (ret_val) return ret_val;
4241 ret_val = put_user(cnow.rx, &p_cuser->rx);
4242 if (ret_val) return ret_val;
4243 ret_val = put_user(cnow.tx, &p_cuser->tx);
4244 if (ret_val) return ret_val;
4245 ret_val = put_user(cnow.frame, &p_cuser->frame);
4246 if (ret_val) return ret_val;
4247 ret_val = put_user(cnow.overrun, &p_cuser->overrun);
4248 if (ret_val) return ret_val;
4249 ret_val = put_user(cnow.parity, &p_cuser->parity);
4250 if (ret_val) return ret_val;
4251 ret_val = put_user(cnow.brk, &p_cuser->brk);
4252 if (ret_val) return ret_val;
4253 ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
4254 if (ret_val) return ret_val;
4258 ret_val = -ENOIOCTLCMD;
4261 #ifdef CY_DEBUG_OTHER
4262 printk(" cyc:cy_ioctl done\n");
4270 * This routine allows the tty driver to be notified when
4271 * device's termios settings have changed. Note that a
4272 * well-designed tty driver should be prepared to accept the case
4273 * where old == NULL, and try to do something rational.
4276 cy_set_termios(struct tty_struct *tty, struct termios * old_termios)
4278 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4280 #ifdef CY_DEBUG_OTHER
4281 printk("cyc:cy_set_termios ttyC%d\n", info->line);
4284 if ((tty->termios->c_cflag == old_termios->c_cflag) &&
4285 ((tty->termios->c_iflag & (IXON|IXANY)) ==
4286 (old_termios->c_iflag & (IXON|IXANY))))
4288 set_line_char(info);
4290 if ((old_termios->c_cflag & CRTSCTS) &&
4291 !(tty->termios->c_cflag & CRTSCTS)) {
4292 tty->hw_stopped = 0;
4297 * No need to wake up processes in open wait, since they
4298 * sample the CLOCAL flag once, and don't recheck it.
4299 * XXX It's not clear whether the current behavior is correct
4300 * or not. Hence, this may change.....
4302 if (!(old_termios->c_cflag & CLOCAL) &&
4303 (tty->termios->c_cflag & CLOCAL))
4304 wake_up_interruptible(&info->open_wait);
4308 } /* cy_set_termios */
4310 /* This function is used to send a high-priority XON/XOFF character to
4314 cy_send_xchar (struct tty_struct *tty, char ch)
4316 struct cyclades_port *info = (struct cyclades_port *) tty->driver_data;
4319 if (serial_paranoia_check (info, tty->name, "cy_send_xchar"))
4328 channel = info->line - cy_card[card].first_line;
4330 if (IS_CYC_Z (cy_card[card])) {
4331 if (ch == STOP_CHAR (tty))
4332 cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXOFF, 0L);
4333 else if (ch == START_CHAR (tty))
4334 cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXON, 0L);
4338 /* This routine is called by the upper-layer tty layer to signal
4339 that incoming characters should be throttled because the input
4340 buffers are close to full.
4343 cy_throttle(struct tty_struct * tty)
4345 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4346 unsigned long flags;
4347 unsigned char *base_addr;
4348 int card,chip,channel,index;
4350 #ifdef CY_DEBUG_THROTTLE
4353 printk("cyc:throttle %s: %d....ttyC%d\n",
4355 tty->ldisc.chars_in_buffer(tty), info->line);
4358 if (serial_paranoia_check(info, tty->name, "cy_throttle")){
4365 if (!IS_CYC_Z (cy_card[card]))
4366 cy_send_xchar (tty, STOP_CHAR (tty));
4371 if (tty->termios->c_cflag & CRTSCTS) {
4372 channel = info->line - cy_card[card].first_line;
4373 if (!IS_CYC_Z(cy_card[card])) {
4376 index = cy_card[card].bus_index;
4377 base_addr = (unsigned char*)
4378 (cy_card[card].base_addr
4379 + (cy_chip_offset[chip]<<index));
4381 CY_LOCK(info, flags);
4382 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
4383 if (info->rtsdtr_inv) {
4384 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
4386 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
4388 CY_UNLOCK(info, flags);
4399 * This routine notifies the tty driver that it should signal
4400 * that characters can now be sent to the tty without fear of
4401 * overrunning the input buffers of the line disciplines.
4404 cy_unthrottle(struct tty_struct * tty)
4406 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4407 unsigned long flags;
4408 unsigned char *base_addr;
4409 int card,chip,channel,index;
4411 #ifdef CY_DEBUG_THROTTLE
4414 printk("cyc:unthrottle %s: %d....ttyC%d\n",
4416 tty->ldisc.chars_in_buffer(tty), info->line);
4419 if (serial_paranoia_check(info, tty->name, "cy_unthrottle")){
4427 cy_send_xchar (tty, START_CHAR (tty));
4430 if (tty->termios->c_cflag & CRTSCTS) {
4432 channel = info->line - cy_card[card].first_line;
4433 if (!IS_CYC_Z(cy_card[card])) {
4436 index = cy_card[card].bus_index;
4437 base_addr = (unsigned char*)
4438 (cy_card[card].base_addr
4439 + (cy_chip_offset[chip]<<index));
4441 CY_LOCK(info, flags);
4442 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
4443 if (info->rtsdtr_inv) {
4444 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
4446 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
4448 CY_UNLOCK(info, flags);
4455 } /* cy_unthrottle */
4458 /* cy_start and cy_stop provide software output flow control as a
4459 function of XON/XOFF, software CTS, and other such stuff.
4462 cy_stop(struct tty_struct *tty)
4464 struct cyclades_card *cinfo;
4465 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4466 unsigned char *base_addr;
4467 int chip,channel,index;
4468 unsigned long flags;
4470 #ifdef CY_DEBUG_OTHER
4471 printk("cyc:cy_stop ttyC%d\n", info->line); /* */
4474 if (serial_paranoia_check(info, tty->name, "cy_stop"))
4477 cinfo = &cy_card[info->card];
4478 channel = info->line - cinfo->first_line;
4479 if (!IS_CYC_Z(*cinfo)) {
4480 index = cinfo->bus_index;
4483 base_addr = (unsigned char*)
4484 (cy_card[info->card].base_addr
4485 + (cy_chip_offset[chip]<<index));
4487 CY_LOCK(info, flags);
4488 cy_writeb((u_long)base_addr+(CyCAR<<index),
4489 (u_char)(channel & 0x0003)); /* index channel */
4490 cy_writeb((u_long)base_addr+(CySRER<<index),
4491 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
4492 CY_UNLOCK(info, flags);
4502 cy_start(struct tty_struct *tty)
4504 struct cyclades_card *cinfo;
4505 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4506 unsigned char *base_addr;
4507 int chip,channel,index;
4508 unsigned long flags;
4510 #ifdef CY_DEBUG_OTHER
4511 printk("cyc:cy_start ttyC%d\n", info->line); /* */
4514 if (serial_paranoia_check(info, tty->name, "cy_start"))
4517 cinfo = &cy_card[info->card];
4518 channel = info->line - cinfo->first_line;
4519 index = cinfo->bus_index;
4520 if (!IS_CYC_Z(*cinfo)) {
4523 base_addr = (unsigned char*)
4524 (cy_card[info->card].base_addr
4525 + (cy_chip_offset[chip]<<index));
4527 CY_LOCK(info, flags);
4528 cy_writeb((u_long)base_addr+(CyCAR<<index),
4529 (u_char)(channel & 0x0003)); /* index channel */
4530 cy_writeb((u_long)base_addr+(CySRER<<index),
4531 cy_readb(base_addr+(CySRER<<index)) | CyTxRdy);
4532 CY_UNLOCK(info, flags);
4542 cy_flush_buffer(struct tty_struct *tty)
4544 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4545 int card, channel, retval;
4546 unsigned long flags;
4549 printk("cyc:cy_flush_buffer ttyC%d\n", info->line); /* */
4552 if (serial_paranoia_check(info, tty->name, "cy_flush_buffer"))
4556 channel = (info->line) - (cy_card[card].first_line);
4558 CY_LOCK(info, flags);
4559 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
4560 CY_UNLOCK(info, flags);
4562 if (IS_CYC_Z(cy_card[card])) { /* If it is a Z card, flush the on-board
4564 CY_LOCK(info, flags);
4565 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_TX, 0L);
4567 printk("cyc: flush_buffer retval on ttyC%d was %x\n",
4568 info->line, retval);
4570 CY_UNLOCK(info, flags);
4572 wake_up_interruptible(&tty->write_wait);
4573 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
4574 && tty->ldisc.write_wakeup)
4575 (tty->ldisc.write_wakeup)(tty);
4576 } /* cy_flush_buffer */
4580 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
4583 cy_hangup(struct tty_struct *tty)
4585 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
4587 #ifdef CY_DEBUG_OTHER
4588 printk("cyc:cy_hangup ttyC%d\n", info->line); /* */
4591 if (serial_paranoia_check(info, tty->name, "cy_hangup"))
4594 cy_flush_buffer(tty);
4598 #ifdef CY_DEBUG_COUNT
4599 printk("cyc:cy_hangup (%d): setting count to 0\n", current->pid);
4602 info->flags &= ~ASYNC_NORMAL_ACTIVE;
4603 wake_up_interruptible(&info->open_wait);
4608 * ---------------------------------------------------------------------
4609 * cy_init() and friends
4611 * cy_init() is called at boot-time to initialize the serial driver.
4612 * ---------------------------------------------------------------------
4615 /* initialize chips on Cyclom-Y card -- return number of valid
4616 chips (which is number of ports/4) */
4617 static unsigned short __init
4618 cyy_init_card(volatile ucchar *true_base_addr,int index)
4620 unsigned int chip_number;
4621 volatile ucchar* base_addr;
4623 cy_writeb((u_long)true_base_addr+(Cy_HwReset<<index), 0);
4624 /* Cy_HwReset is 0x1400 */
4625 cy_writeb((u_long)true_base_addr+(Cy_ClrIntr<<index), 0);
4626 /* Cy_ClrIntr is 0x1800 */
4629 for(chip_number=0; chip_number<CyMAX_CHIPS_PER_CARD; chip_number++){
4630 base_addr = true_base_addr
4631 + (cy_chip_offset[chip_number]<<index);
4633 if(cy_readb(base_addr+(CyCCR<<index)) != 0x00){
4635 printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
4636 chip_number, (unsigned long)base_addr);
4641 cy_writeb((u_long)base_addr+(CyGFRCR<<index), 0);
4644 /* The Cyclom-16Y does not decode address bit 9 and therefore
4645 cannot distinguish between references to chip 0 and a non-
4646 existent chip 4. If the preceding clearing of the supposed
4647 chip 4 GFRCR register appears at chip 0, there is no chip 4
4648 and this must be a Cyclom-16Y, not a Cyclom-32Ye.
4650 if (chip_number == 4
4651 && cy_readb(true_base_addr
4652 + (cy_chip_offset[0]<<index)
4653 + (CyGFRCR<<index)) == 0){
4657 cy_writeb((u_long)base_addr+(CyCCR<<index), CyCHIP_RESET);
4660 if(cy_readb(base_addr+(CyGFRCR<<index)) == 0x00){
4662 printk(" chip #%d at %#6lx is not responding ",
4663 chip_number, (unsigned long)base_addr);
4664 printk("(GFRCR stayed 0)\n",
4668 if((0xf0 & (cy_readb(base_addr+(CyGFRCR<<index)))) != 0x40){
4670 printk(" chip #%d at %#6lx is not valid (GFRCR == %#2x)\n",
4671 chip_number, (unsigned long)base_addr,
4672 base_addr[CyGFRCR<<index]);
4676 cy_writeb((u_long)base_addr+(CyGCR<<index), CyCH0_SERIAL);
4677 if (cy_readb(base_addr+(CyGFRCR<<index)) >= CD1400_REV_J){
4678 /* It is a CD1400 rev. J or later */
4679 /* Impossible to reach 5ms with this chip.
4680 Changed to 2ms instead (f = 500 Hz). */
4681 cy_writeb((u_long)base_addr+(CyPPR<<index), CyCLOCK_60_2MS);
4684 cy_writeb((u_long)base_addr+(CyPPR<<index), CyCLOCK_25_5MS);
4688 printk(" chip #%d at %#6lx is rev 0x%2x\n",
4689 chip_number, (unsigned long)base_addr,
4690 cy_readb(base_addr+(CyGFRCR<<index)));
4694 } /* cyy_init_card */
4697 * ---------------------------------------------------------------------
4698 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
4699 * sets global variables and return the number of ISA boards found.
4700 * ---------------------------------------------------------------------
4706 unsigned short cy_isa_irq,nboard;
4707 volatile ucchar *cy_isa_address;
4708 unsigned short i,j,cy_isa_nchan;
4716 /* Check for module parameters */
4717 for(i = 0 ; i < NR_CARDS; i++) {
4718 if (maddr[i] || i) {
4720 cy_isa_addresses[i] = (ucchar *)maddr[i];
4727 /* scan the address table probing for Cyclom-Y/ISA boards */
4728 for (i = 0 ; i < NR_ISA_ADDRS ; i++) {
4729 cy_isa_address = cy_isa_addresses[i];
4730 if (cy_isa_address == 0x0000) {
4734 /* probe for CD1400... */
4735 #if !defined(__alpha__)
4736 cy_isa_address = ioremap((ulong)cy_isa_address, CyISA_Ywin);
4738 cy_isa_nchan = CyPORTS_PER_CHIP *
4739 cyy_init_card(cy_isa_address,0);
4740 if (cy_isa_nchan == 0) {
4745 if (isparam && irq[i])
4746 cy_isa_irq = irq[i];
4749 /* find out the board's irq by probing */
4750 cy_isa_irq = detect_isa_irq(cy_isa_address);
4751 if (cy_isa_irq == 0) {
4752 printk("Cyclom-Y/ISA found at 0x%lx ",
4753 (unsigned long) cy_isa_address);
4754 printk("but the IRQ could not be detected.\n");
4758 if((cy_next_channel+cy_isa_nchan) > NR_PORTS) {
4759 printk("Cyclom-Y/ISA found at 0x%lx ",
4760 (unsigned long) cy_isa_address);
4761 printk("but no more channels are available.\n");
4762 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
4765 /* fill the next cy_card structure available */
4766 for (j = 0 ; j < NR_CARDS ; j++) {
4767 if (cy_card[j].base_addr == 0) break;
4769 if (j == NR_CARDS) { /* no more cy_cards available */
4770 printk("Cyclom-Y/ISA found at 0x%lx ",
4771 (unsigned long) cy_isa_address);
4772 printk("but no more cards can be used .\n");
4773 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4778 if(request_irq(cy_isa_irq, cyy_interrupt,
4779 SA_INTERRUPT, "Cyclom-Y", &cy_card[j]))
4781 printk("Cyclom-Y/ISA found at 0x%lx ",
4782 (unsigned long) cy_isa_address);
4783 printk("but could not allocate IRQ#%d.\n",
4789 cy_card[j].base_addr = (u_long) cy_isa_address;
4790 cy_card[j].ctl_addr = 0;
4791 cy_card[j].irq = (int) cy_isa_irq;
4792 cy_card[j].bus_index = 0;
4793 cy_card[j].first_line = cy_next_channel;
4794 cy_card[j].num_chips = cy_isa_nchan/4;
4798 printk("Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d, ",
4799 j+1, (unsigned long) cy_isa_address,
4800 (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)),
4802 printk("%d channels starting from port %d.\n",
4803 cy_isa_nchan, cy_next_channel);
4804 cy_next_channel += cy_isa_nchan;
4809 #endif /* CONFIG_ISA */
4810 } /* cy_detect_isa */
4813 plx_init(uclong addr, uclong initctl)
4816 cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x40000000);
4818 cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x40000000);
4820 /* Reload Config. Registers from EEPROM */
4821 cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x20000000);
4823 cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x20000000);
4827 * ---------------------------------------------------------------------
4828 * cy_detect_pci() - Test PCI bus presence and Cyclom-Ye/PCI.
4829 * sets global variables and return the number of PCI boards found.
4830 * ---------------------------------------------------------------------
4837 struct pci_dev *pdev = NULL;
4838 unsigned char cyy_rev_id;
4839 unsigned char cy_pci_irq = 0;
4840 uclong cy_pci_phys0, cy_pci_phys2;
4841 uclong cy_pci_addr0, cy_pci_addr2;
4842 unsigned short i,j,cy_pci_nchan, plx_ver;
4843 unsigned short device_id,dev_index = 0;
4845 uclong Ze_addr0[NR_CARDS], Ze_addr2[NR_CARDS], ZeIndex = 0;
4846 uclong Ze_phys0[NR_CARDS], Ze_phys2[NR_CARDS];
4847 unsigned char Ze_irq[NR_CARDS];
4848 struct pci_dev *Ze_pdev[NR_CARDS];
4850 for (i = 0; i < NR_CARDS; i++) {
4851 /* look for a Cyclades card by vendor and device id */
4852 while((device_id = cy_pci_dev_id[dev_index]) != 0) {
4853 if((pdev = pci_find_device(PCI_VENDOR_ID_CYCLADES,
4854 device_id, pdev)) == NULL) {
4855 dev_index++; /* try next device id */
4857 break; /* found a board */
4864 if (pci_enable_device(pdev))
4867 /* read PCI configuration area */
4868 cy_pci_irq = pdev->irq;
4869 cy_pci_phys0 = pci_resource_start(pdev, 0);
4870 cy_pci_phys2 = pci_resource_start(pdev, 2);
4871 pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id);
4873 device_id &= ~PCI_DEVICE_ID_MASK;
4875 if ((device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo)
4876 || (device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi)){
4878 printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ",
4879 pdev->bus->number, pdev->devfn);
4880 printk("rev_id=%d) IRQ%d\n",
4881 cyy_rev_id, (int)cy_pci_irq);
4882 printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n",
4883 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4886 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
4887 printk(" Warning: PCI I/O bit incorrectly set. "
4888 "Ignoring it...\n");
4889 pdev->resource[2].flags &= ~IORESOURCE_IO;
4892 /* Although we don't use this I/O region, we should
4893 request it from the kernel anyway, to avoid problems
4894 with other drivers accessing it. */
4895 if (pci_request_regions(pdev, "Cyclom-Y") != 0) {
4896 printk(KERN_ERR "cyclades: failed to reserve PCI resources\n");
4900 #if defined(__alpha__)
4901 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
4902 printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ",
4903 pdev->bus->number, pdev->devfn);
4904 printk("rev_id=%d) IRQ%d\n",
4905 cyy_rev_id, (int)cy_pci_irq);
4906 printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n",
4907 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4908 printk("Cyclom-Y/PCI not supported for low addresses in "
4909 "Alpha systems.\n");
4914 cy_pci_addr0 = (ulong)ioremap(cy_pci_phys0, CyPCI_Yctl);
4915 cy_pci_addr2 = (ulong)ioremap(cy_pci_phys2, CyPCI_Ywin);
4918 printk("Cyclom-Y/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
4919 (u_long)cy_pci_addr2, (u_long)cy_pci_addr0);
4921 cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP *
4922 cyy_init_card((volatile ucchar *)cy_pci_addr2, 1));
4923 if(cy_pci_nchan == 0) {
4924 printk("Cyclom-Y PCI host card with ");
4925 printk("no Serial-Modules at 0x%lx.\n",
4926 (ulong) cy_pci_phys2);
4930 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
4931 printk("Cyclom-Y/PCI found at 0x%lx ",
4932 (ulong) cy_pci_phys2);
4933 printk("but no channels are available.\n");
4934 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
4937 /* fill the next cy_card structure available */
4938 for (j = 0 ; j < NR_CARDS ; j++) {
4939 if (cy_card[j].base_addr == 0) break;
4941 if (j == NR_CARDS) { /* no more cy_cards available */
4942 printk("Cyclom-Y/PCI found at 0x%lx ",
4943 (ulong) cy_pci_phys2);
4944 printk("but no more cards can be used.\n");
4945 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4950 if(request_irq(cy_pci_irq, cyy_interrupt,
4951 SA_SHIRQ, "Cyclom-Y", &cy_card[j]))
4953 printk("Cyclom-Y/PCI found at 0x%lx ",
4954 (ulong) cy_pci_phys2);
4955 printk("but could not allocate IRQ%d.\n",
4961 cy_card[j].base_phys = (ulong)cy_pci_phys2;
4962 cy_card[j].ctl_phys = (ulong)cy_pci_phys0;
4963 cy_card[j].base_addr = (ulong)cy_pci_addr2;
4964 cy_card[j].ctl_addr = (ulong)cy_pci_addr0;
4965 cy_card[j].irq = (int) cy_pci_irq;
4966 cy_card[j].bus_index = 1;
4967 cy_card[j].first_line = cy_next_channel;
4968 cy_card[j].num_chips = cy_pci_nchan/4;
4969 cy_card[j].pdev = pdev;
4971 /* enable interrupts in the PCI interface */
4972 plx_ver = cy_readb(cy_pci_addr2 + CyPLX_VER) & 0x0f;
4976 cy_writeb(cy_pci_addr0+0x4c, 0x43);
4981 default: /* Old boards, use PLX_9060 */
4983 plx_init(cy_pci_addr0, 0x6c);
4984 /* For some yet unknown reason, once the PLX9060 reloads
4985 the EEPROM, the IRQ is lost and, thus, we have to
4986 re-write it to the PCI config. registers.
4987 This will remain here until we find a permanent fix. */
4988 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq);
4990 cy_writew(cy_pci_addr0+0x68,
4991 cy_readw(cy_pci_addr0+0x68)|0x0900);
4996 printk("Cyclom-Y/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
4998 (ulong)cy_pci_phys2,
4999 (ulong)(cy_pci_phys2 + CyPCI_Ywin - 1),
5001 printk("%d channels starting from port %d.\n",
5002 cy_pci_nchan, cy_next_channel);
5004 cy_next_channel += cy_pci_nchan;
5005 }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo){
5007 printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ",
5008 pdev->bus->number, pdev->devfn);
5009 printk("rev_id=%d) IRQ%d\n",
5010 cyy_rev_id, (int)cy_pci_irq);
5011 printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n",
5012 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
5013 printk("Cyclades-Z/PCI not supported for low addresses\n");
5015 }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi){
5017 printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ",
5018 pdev->bus->number, pdev->devfn);
5019 printk("rev_id=%d) IRQ%d\n",
5020 cyy_rev_id, (int)cy_pci_irq);
5021 printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n",
5022 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
5024 cy_pci_addr0 = (ulong)ioremap(cy_pci_phys0, CyPCI_Zctl);
5026 /* Disable interrupts on the PLX before resetting it */
5027 cy_writew(cy_pci_addr0+0x68,
5028 cy_readw(cy_pci_addr0+0x68) & ~0x0900);
5030 plx_init(cy_pci_addr0, 0x6c);
5031 /* For some yet unknown reason, once the PLX9060 reloads
5032 the EEPROM, the IRQ is lost and, thus, we have to
5033 re-write it to the PCI config. registers.
5034 This will remain here until we find a permanent fix. */
5035 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq);
5037 mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 *)
5038 cy_pci_addr0)->mail_box_0);
5040 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
5041 printk(" Warning: PCI I/O bit incorrectly set. "
5042 "Ignoring it...\n");
5043 pdev->resource[2].flags &= ~IORESOURCE_IO;
5046 /* Although we don't use this I/O region, we should
5047 request it from the kernel anyway, to avoid problems
5048 with other drivers accessing it. */
5049 if (pci_request_regions(pdev, "Cyclades-Z") != 0) {
5050 printk(KERN_ERR "cyclades: failed to reserve PCI resources\n");
5054 if (mailbox == ZE_V1) {
5055 cy_pci_addr2 = (ulong)ioremap(cy_pci_phys2, CyPCI_Ze_win);
5056 if (ZeIndex == NR_CARDS) {
5057 printk("Cyclades-Ze/PCI found at 0x%lx ",
5058 (ulong)cy_pci_phys2);
5059 printk("but no more cards can be used.\n");
5060 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5062 Ze_phys0[ZeIndex] = cy_pci_phys0;
5063 Ze_phys2[ZeIndex] = cy_pci_phys2;
5064 Ze_addr0[ZeIndex] = cy_pci_addr0;
5065 Ze_addr2[ZeIndex] = cy_pci_addr2;
5066 Ze_irq[ZeIndex] = cy_pci_irq;
5067 Ze_pdev[ZeIndex] = pdev;
5073 cy_pci_addr2 = (ulong)ioremap(cy_pci_phys2, CyPCI_Zwin);
5077 printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
5078 (ulong)cy_pci_addr2, (ulong)cy_pci_addr0);
5079 if (mailbox == ZO_V1) {
5080 cy_writel(&((struct RUNTIME_9060 *)
5081 (cy_pci_addr0))->loc_addr_base, WIN_CREG);
5083 printk("Cyclades-8Zo/PCI: FPGA id %lx, ver %lx\n",
5084 (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *)
5085 (cy_pci_addr2))->fpga_id)),
5086 (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *)
5087 (cy_pci_addr2))->fpga_version)));
5088 cy_writel(&((struct RUNTIME_9060 *)
5089 (cy_pci_addr0))->loc_addr_base, WIN_RAM);
5091 printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n");
5094 /* The following clears the firmware id word. This ensures
5095 that the driver will not attempt to talk to the board
5096 until it has been properly initialized.
5099 if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
5100 cy_writel((ulong)(cy_pci_addr2+ID_ADDRESS), 0L);
5102 /* This must be a Cyclades-8Zo/PCI. The extendable
5103 version will have a different device_id and will
5104 be allocated its maximum number of ports. */
5107 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
5108 printk("Cyclades-8Zo/PCI found at 0x%lx ",
5109 (ulong)cy_pci_phys2);
5110 printk("but no channels are available.\n");
5111 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
5115 /* fill the next cy_card structure available */
5116 for (j = 0 ; j < NR_CARDS ; j++) {
5117 if (cy_card[j].base_addr == 0) break;
5119 if (j == NR_CARDS) { /* no more cy_cards available */
5120 printk("Cyclades-8Zo/PCI found at 0x%lx ",
5121 (ulong)cy_pci_phys2);
5122 printk("but no more cards can be used.\n");
5123 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5127 #ifdef CONFIG_CYZ_INTR
5128 /* allocate IRQ only if board has an IRQ */
5129 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
5130 if(request_irq(cy_pci_irq, cyz_interrupt,
5131 SA_SHIRQ, "Cyclades-Z", &cy_card[j]))
5133 printk("Cyclom-8Zo/PCI found at 0x%lx ",
5134 (ulong) cy_pci_phys2);
5135 printk("but could not allocate IRQ%d.\n",
5140 #endif /* CONFIG_CYZ_INTR */
5144 cy_card[j].base_phys = cy_pci_phys2;
5145 cy_card[j].ctl_phys = cy_pci_phys0;
5146 cy_card[j].base_addr = cy_pci_addr2;
5147 cy_card[j].ctl_addr = cy_pci_addr0;
5148 cy_card[j].irq = (int) cy_pci_irq;
5149 cy_card[j].bus_index = 1;
5150 cy_card[j].first_line = cy_next_channel;
5151 cy_card[j].num_chips = -1;
5152 cy_card[j].pdev = pdev;
5155 #ifdef CONFIG_CYZ_INTR
5156 /* don't report IRQ if board is no IRQ */
5157 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) )
5158 printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
5159 j+1,(ulong)cy_pci_phys2,
5160 (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1),
5163 #endif /* CONFIG_CYZ_INTR */
5164 printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, ",
5165 j+1,(ulong)cy_pci_phys2,
5166 (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1));
5168 printk("%d channels starting from port %d.\n",
5169 cy_pci_nchan,cy_next_channel);
5170 cy_next_channel += cy_pci_nchan;
5174 for (; ZeIndex != 0 && i < NR_CARDS; i++) {
5175 cy_pci_phys0 = Ze_phys0[0];
5176 cy_pci_phys2 = Ze_phys2[0];
5177 cy_pci_addr0 = Ze_addr0[0];
5178 cy_pci_addr2 = Ze_addr2[0];
5179 cy_pci_irq = Ze_irq[0];
5181 for (j = 0 ; j < ZeIndex-1 ; j++) {
5182 Ze_phys0[j] = Ze_phys0[j+1];
5183 Ze_phys2[j] = Ze_phys2[j+1];
5184 Ze_addr0[j] = Ze_addr0[j+1];
5185 Ze_addr2[j] = Ze_addr2[j+1];
5186 Ze_irq[j] = Ze_irq[j+1];
5187 Ze_pdev[j] = Ze_pdev[j+1];
5190 mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 *)
5191 cy_pci_addr0)->mail_box_0);
5193 printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
5194 (ulong)cy_pci_addr2, (ulong)cy_pci_addr0);
5195 printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n");
5198 /* This must be the new Cyclades-Ze/PCI. */
5199 cy_pci_nchan = ZE_V1_NPORTS;
5201 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
5202 printk("Cyclades-Ze/PCI found at 0x%lx ",
5203 (ulong)cy_pci_phys2);
5204 printk("but no channels are available.\n");
5205 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
5209 /* fill the next cy_card structure available */
5210 for (j = 0 ; j < NR_CARDS ; j++) {
5211 if (cy_card[j].base_addr == 0) break;
5213 if (j == NR_CARDS) { /* no more cy_cards available */
5214 printk("Cyclades-Ze/PCI found at 0x%lx ",
5215 (ulong)cy_pci_phys2);
5216 printk("but no more cards can be used.\n");
5217 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5221 #ifdef CONFIG_CYZ_INTR
5222 /* allocate IRQ only if board has an IRQ */
5223 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
5224 if(request_irq(cy_pci_irq, cyz_interrupt,
5225 SA_SHIRQ, "Cyclades-Z", &cy_card[j]))
5227 printk("Cyclom-Ze/PCI found at 0x%lx ",
5228 (ulong) cy_pci_phys2);
5229 printk("but could not allocate IRQ%d.\n",
5234 #endif /* CONFIG_CYZ_INTR */
5237 cy_card[j].base_phys = cy_pci_phys2;
5238 cy_card[j].ctl_phys = cy_pci_phys0;
5239 cy_card[j].base_addr = cy_pci_addr2;
5240 cy_card[j].ctl_addr = cy_pci_addr0;
5241 cy_card[j].irq = (int) cy_pci_irq;
5242 cy_card[j].bus_index = 1;
5243 cy_card[j].first_line = cy_next_channel;
5244 cy_card[j].num_chips = -1;
5245 cy_card[j].pdev = pdev;
5248 #ifdef CONFIG_CYZ_INTR
5249 /* don't report IRQ if board is no IRQ */
5250 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) )
5251 printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
5252 j+1,(ulong)cy_pci_phys2,
5253 (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1),
5256 #endif /* CONFIG_CYZ_INTR */
5257 printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, ",
5258 j+1,(ulong)cy_pci_phys2,
5259 (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1));
5261 printk("%d channels starting from port %d.\n",
5262 cy_pci_nchan,cy_next_channel);
5263 cy_next_channel += cy_pci_nchan;
5266 printk("Cyclades-Ze/PCI found at 0x%x ",
5267 (unsigned int) Ze_phys2[0]);
5268 printk("but no more cards can be used.\n");
5269 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5274 #endif /* ifdef CONFIG_PCI */
5275 } /* cy_detect_pci */
5279 * This routine prints out the appropriate serial driver version number
5280 * and identifies which options were configured into this driver.
5285 char *rcsvers, *rcsdate, *tmp;
5286 rcsvers = strchr(rcsid, ' '); rcsvers++;
5287 tmp = strchr(rcsvers, ' '); *tmp++ = '\0';
5288 rcsdate = strchr(tmp, ' '); rcsdate++;
5289 tmp = strrchr(rcsdate, ' '); *tmp = '\0';
5290 printk("Cyclades driver %s %s\n",
5292 printk(" built %s %s\n",
5293 __DATE__, __TIME__);
5294 } /* show_version */
5297 cyclades_get_proc_info(char *buf, char **start, off_t offset, int length,
5298 int *eof, void *data)
5300 struct cyclades_port *info;
5306 __u32 cur_jifs = jiffies;
5308 size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn IdleIn Overruns Ldisc\n");
5313 /* Output one line for each known port */
5314 for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) {
5318 size = sprintf(buf+len,
5319 "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n",
5321 JIFFIES_DIFF(info->idle_stats.in_use, cur_jifs) / HZ,
5322 info->idle_stats.xmit_bytes,
5323 JIFFIES_DIFF(info->idle_stats.xmit_idle, cur_jifs) / HZ,
5324 info->idle_stats.recv_bytes,
5325 JIFFIES_DIFF(info->idle_stats.recv_idle, cur_jifs) / HZ,
5326 info->idle_stats.overruns,
5327 (long) info->tty->ldisc.num);
5329 size = sprintf(buf+len,
5330 "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n",
5331 info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
5339 if (pos > offset + length)
5344 *start = buf + (offset - begin); /* Start of wanted data */
5345 len -= (offset - begin); /* Start slop */
5347 len = length; /* Ending slop */
5353 /* The serial driver boot-time initialization code!
5354 Hardware I/O ports are mapped to character special devices on a
5355 first found, first allocated manner. That is, this code searches
5356 for Cyclom cards in the system. As each is found, it is probed
5357 to discover how many chips (and thus how many ports) are present.
5358 These ports are mapped to the tty ports 32 and upward in monotonic
5359 fashion. If an 8-port card is replaced with a 16-port card, the
5360 port mapping on a following card will shift.
5362 This approach is different from what is used in the other serial
5363 device driver because the Cyclom is more properly a multiplexer,
5364 not just an aggregation of serial ports on one card.
5366 If there are more cards with more ports than have been
5367 statically allocated above, a warning is printed and the
5368 extra ports are ignored.
5371 static struct tty_operations cy_ops = {
5375 .put_char = cy_put_char,
5376 .flush_chars = cy_flush_chars,
5377 .write_room = cy_write_room,
5378 .chars_in_buffer = cy_chars_in_buffer,
5379 .flush_buffer = cy_flush_buffer,
5381 .throttle = cy_throttle,
5382 .unthrottle = cy_unthrottle,
5383 .set_termios = cy_set_termios,
5386 .hangup = cy_hangup,
5387 .break_ctl = cy_break,
5388 .wait_until_sent = cy_wait_until_sent,
5389 .read_proc = cyclades_get_proc_info,
5390 .tiocmget = cy_tiocmget,
5391 .tiocmset = cy_tiocmset,
5397 struct cyclades_port *info;
5398 struct cyclades_card *cinfo;
5399 int number_z_boards = 0;
5400 int board,port,i,index;
5401 unsigned long mailbox;
5402 unsigned short chip_number;
5405 cy_serial_driver = alloc_tty_driver(NR_PORTS);
5406 if (!cy_serial_driver)
5410 /* Initialize the tty_driver structure */
5412 cy_serial_driver->owner = THIS_MODULE;
5413 cy_serial_driver->driver_name = "cyclades";
5414 cy_serial_driver->name = "ttyC";
5415 cy_serial_driver->devfs_name = "tts/C";
5416 cy_serial_driver->major = CYCLADES_MAJOR;
5417 cy_serial_driver->minor_start = 0;
5418 cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
5419 cy_serial_driver->subtype = SERIAL_TYPE_NORMAL;
5420 cy_serial_driver->init_termios = tty_std_termios;
5421 cy_serial_driver->init_termios.c_cflag =
5422 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
5423 cy_serial_driver->flags = TTY_DRIVER_REAL_RAW;
5424 tty_set_operations(cy_serial_driver, &cy_ops);
5426 if (tty_register_driver(cy_serial_driver))
5427 panic("Couldn't register Cyclades serial driver\n");
5429 for (i = 0; i < NR_CARDS; i++) {
5430 /* base_addr=0 indicates board not found */
5431 cy_card[i].base_addr = 0;
5434 /* the code below is responsible to find the boards. Each different
5435 type of board has its own detection routine. If a board is found,
5436 the next cy_card structure available is set by the detection
5437 routine. These functions are responsible for checking the
5438 availability of cy_card and cy_port data structures and updating
5439 the cy_next_channel. */
5441 /* look for isa boards */
5442 cy_isa_nboard = cy_detect_isa();
5444 /* look for pci boards */
5445 cy_pci_nboard = cy_detect_pci();
5447 cy_nboard = cy_isa_nboard + cy_pci_nboard;
5449 /* invalidate remaining cy_card structures */
5450 for (i = 0 ; i < NR_CARDS ; i++) {
5451 if (cy_card[i].base_addr == 0) {
5452 cy_card[i].first_line = -1;
5453 cy_card[i].ctl_addr = 0;
5455 cy_card[i].bus_index = 0;
5456 cy_card[i].first_line = 0;
5457 cy_card[i].num_chips = 0;
5460 /* invalidate remaining cy_port structures */
5461 for (i = cy_next_channel ; i < NR_PORTS ; i++) {
5462 cy_port[i].line = -1;
5463 cy_port[i].magic = -1;
5466 /* initialize per-port data structures for each valid board found */
5467 for (board = 0 ; board < cy_nboard ; board++) {
5468 cinfo = &cy_card[board];
5469 if (cinfo->num_chips == -1) { /* Cyclades-Z */
5471 mailbox = cy_readl(&((struct RUNTIME_9060 *)
5472 cy_card[board].ctl_addr)->mail_box_0);
5473 nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8;
5474 cinfo->intr_enabled = 0;
5475 cinfo->nports = 0; /* Will be correctly set later, after
5477 spin_lock_init(&cinfo->card_lock);
5478 for (port = cinfo->first_line ;
5479 port < cinfo->first_line + nports;
5482 info = &cy_port[port];
5483 info->magic = CYCLADES_MAGIC;
5484 info->type = PORT_STARTECH;
5488 info->flags = STD_COM_FLAGS;
5490 if (mailbox == ZO_V1)
5491 info->xmit_fifo_size = CYZ_FIFO_SIZE;
5493 info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
5503 info->custom_divisor = 0;
5504 info->close_delay = 5*HZ/10;
5505 info->closing_wait = CLOSING_WAIT_DELAY;
5506 info->icount.cts = info->icount.dsr =
5507 info->icount.rng = info->icount.dcd = 0;
5508 info->icount.rx = info->icount.tx = 0;
5509 info->icount.frame = info->icount.parity = 0;
5510 info->icount.overrun = info->icount.brk = 0;
5514 info->blocked_open = 0;
5515 info->default_threshold = 0;
5516 info->default_timeout = 0;
5517 INIT_WORK(&info->tqueue, do_softint, info);
5518 init_waitqueue_head(&info->open_wait);
5519 init_waitqueue_head(&info->close_wait);
5520 init_waitqueue_head(&info->shutdown_wait);
5521 init_waitqueue_head(&info->delta_msr_wait);
5524 info->read_status_mask = 0;
5526 /* Bentson's vars */
5527 info->jiffies[0] = 0;
5528 info->jiffies[1] = 0;
5529 info->jiffies[2] = 0;
5530 info->rflush_count = 0;
5531 #ifdef CONFIG_CYZ_INTR
5532 init_timer(&cyz_rx_full_timer[port]);
5533 cyz_rx_full_timer[port].function = NULL;
5537 }else{ /* Cyclom-Y of some kind*/
5538 index = cinfo->bus_index;
5539 spin_lock_init(&cinfo->card_lock);
5540 cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips;
5541 for (port = cinfo->first_line ;
5542 port < cinfo->first_line + cinfo->nports ;
5545 info = &cy_port[port];
5546 info->magic = CYCLADES_MAGIC;
5547 info->type = PORT_CIRRUS;
5550 info->flags = STD_COM_FLAGS;
5552 info->xmit_fifo_size = CyMAX_CHAR_FIFO;
5553 info->cor1 = CyPARITY_NONE|Cy_1_STOP|Cy_8_BITS;
5555 info->cor3 = 0x08; /* _very_ small rcv threshold */
5558 info->custom_divisor = 0;
5559 info->close_delay = 5*HZ/10;
5560 info->closing_wait = CLOSING_WAIT_DELAY;
5561 info->icount.cts = info->icount.dsr =
5562 info->icount.rng = info->icount.dcd = 0;
5563 info->icount.rx = info->icount.tx = 0;
5564 info->icount.frame = info->icount.parity = 0;
5565 info->icount.overrun = info->icount.brk = 0;
5566 chip_number = (port - cinfo->first_line) / 4;
5567 if ((info->chip_rev =
5568 cy_readb(cinfo->base_addr +
5569 (cy_chip_offset[chip_number]<<index) +
5570 (CyGFRCR<<index))) >= CD1400_REV_J) {
5571 /* It is a CD1400 rev. J or later */
5572 info->tbpr = baud_bpr_60[13]; /* Tx BPR */
5573 info->tco = baud_co_60[13]; /* Tx CO */
5574 info->rbpr = baud_bpr_60[13]; /* Rx BPR */
5575 info->rco = baud_co_60[13]; /* Rx CO */
5577 info->rtsdtr_inv = 1;
5579 info->tbpr = baud_bpr_25[13]; /* Tx BPR */
5580 info->tco = baud_co_25[13]; /* Tx CO */
5581 info->rbpr = baud_bpr_25[13]; /* Rx BPR */
5582 info->rco = baud_co_25[13]; /* Rx CO */
5584 info->rtsdtr_inv = 0;
5589 info->blocked_open = 0;
5590 info->default_threshold = 0;
5591 info->default_timeout = 0;
5592 INIT_WORK(&info->tqueue, do_softint, info);
5593 init_waitqueue_head(&info->open_wait);
5594 init_waitqueue_head(&info->close_wait);
5595 init_waitqueue_head(&info->shutdown_wait);
5596 init_waitqueue_head(&info->delta_msr_wait);
5599 info->read_status_mask =
5600 CyTIMEOUT| CySPECHAR| CyBREAK
5601 | CyPARITY| CyFRAME| CyOVERRUN;
5607 #ifndef CONFIG_CYZ_INTR
5608 if (number_z_boards && !cyz_timeron){
5610 cyz_timerlist.expires = jiffies + 1;
5611 add_timer(&cyz_timerlist);
5613 printk("Cyclades-Z polling initialized\n");
5616 #endif /* CONFIG_CYZ_INTR */
5623 cy_cleanup_module(void)
5627 #ifndef CONFIG_CYZ_INTR
5630 del_timer(&cyz_timerlist);
5632 #endif /* CONFIG_CYZ_INTR */
5634 if ((e1 = tty_unregister_driver(cy_serial_driver)))
5635 printk("cyc: failed to unregister Cyclades serial driver(%d)\n",
5638 put_tty_driver(cy_serial_driver);
5640 for (i = 0; i < NR_CARDS; i++) {
5641 if (cy_card[i].base_addr != 0) {
5642 iounmap((void *)cy_card[i].base_addr);
5643 if (cy_card[i].ctl_addr != 0)
5644 iounmap((void *)cy_card[i].ctl_addr);
5646 #ifndef CONFIG_CYZ_INTR
5647 && cy_card[i].num_chips != -1 /* not a Z card */
5648 #endif /* CONFIG_CYZ_INTR */
5650 free_irq(cy_card[i].irq, &cy_card[i]);
5651 if (cy_card[i].pdev)
5652 pci_release_regions(cy_card[i].pdev);
5656 free_page((unsigned long) tmp_buf);
5659 } /* cy_cleanup_module */
5661 module_init(cy_init);
5662 module_exit(cy_cleanup_module);
5665 /* called by linux/init/main.c to parse command line options */
5667 cy_setup(char *str, int *ints)
5672 for (i = 0 ; i < NR_ISA_ADDRS ; i++) {
5673 if (cy_isa_addresses[i] == 0) break;
5675 for (j = 1; j <= ints[0]; j++){
5676 if ( i < NR_ISA_ADDRS ){
5677 cy_isa_addresses[i++] = (unsigned char *)(ints[j]);
5680 #endif /* CONFIG_ISA */
5684 MODULE_LICENSE("GPL");