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);
684 #define IS_CYC_Z(card) ((card).num_chips == -1)
686 #define Z_FPGA_CHECK(card) \
687 ((cy_readl(&((struct RUNTIME_9060 *) \
688 ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0)
690 #define ISZLOADED(card) (((ZO_V1==cy_readl(&((struct RUNTIME_9060 *) \
691 ((card).ctl_addr))->mail_box_0)) || \
692 Z_FPGA_CHECK(card)) && \
693 (ZFIRM_ID==cy_readl(&((struct FIRM_ID *) \
694 ((card).base_addr+ID_ADDRESS))->signature)))
696 #ifndef SERIAL_XMIT_SIZE
697 #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096))
699 #define WAKEUP_CHARS 256
701 #define STD_COM_FLAGS (0)
703 #define JIFFIES_DIFF(n, j) ((j) - (n))
705 static struct tty_driver *cy_serial_driver;
708 /* This is the address lookup table. The driver will probe for
709 Cyclom-Y/ISA boards at all addresses in here. If you want the
710 driver to probe addresses at a different address, add it to
711 this table. If the driver is probing some other board and
712 causing problems, remove the offending address from this table.
713 The cy_setup function extracts additional addresses from the
714 boot options line. The form is "cyclades=address,address..."
717 static unsigned char *cy_isa_addresses[] = {
718 (unsigned char *) 0xD0000,
719 (unsigned char *) 0xD2000,
720 (unsigned char *) 0xD4000,
721 (unsigned char *) 0xD6000,
722 (unsigned char *) 0xD8000,
723 (unsigned char *) 0xDA000,
724 (unsigned char *) 0xDC000,
725 (unsigned char *) 0xDE000,
728 #define NR_ISA_ADDRS (sizeof(cy_isa_addresses)/sizeof(unsigned char*))
731 static long maddr[NR_CARDS] = { 0, };
732 static int irq[NR_CARDS] = { 0, };
734 MODULE_PARM(maddr, "1-" __MODULE_STRING(NR_CARDS) "l");
735 MODULE_PARM(irq, "1-" __MODULE_STRING(NR_CARDS) "i");
738 #endif /* CONFIG_ISA */
740 /* This is the per-card data structure containing address, irq, number of
741 channels, etc. This driver supports a maximum of NR_CARDS cards.
743 static struct cyclades_card cy_card[NR_CARDS];
745 /* This is the per-channel data structure containing pointers, flags
746 and variables for the port. This driver supports a maximum of NR_PORTS.
748 static struct cyclades_port cy_port[NR_PORTS];
750 static int cy_next_channel; /* next minor available */
753 * tmp_buf is used as a temporary buffer by serial_write. We need to
754 * lock it in case the copy_from_user blocks while swapping in a page,
755 * and some other program tries to do a serial write at the same time.
756 * Since the lock will only come under contention when the system is
757 * swapping and available memory is low, it makes sense to share one
758 * buffer across all the serial ports, since it significantly saves
759 * memory if large numbers of serial ports are open. This buffer is
760 * allocated when the first cy_open occurs.
762 static unsigned char *tmp_buf;
763 DECLARE_MUTEX(tmp_buf_sem);
766 * This is used to look up the divisor speeds and the timeouts
767 * We're normally limited to 15 distinct baud rates. The extra
768 * are accessed via settings in info->flags.
769 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
770 * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
774 static int baud_table[] = {
775 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
776 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800,115200,150000,
779 static char baud_co_25[] = { /* 25 MHz clock option table */
780 /* value => 00 01 02 03 04 */
781 /* divide by 8 32 128 512 2048 */
782 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
783 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
785 static char baud_bpr_25[] = { /* 25 MHz baud rate period table */
786 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
787 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15};
789 static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
790 /* value => 00 01 02 03 04 */
791 /* divide by 8 32 128 512 2048 */
792 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
793 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
796 static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */
797 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
798 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
801 static char baud_cor3[] = { /* receive threshold */
802 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
803 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
807 * The Cyclades driver implements HW flow control as any serial driver.
808 * The cyclades_port structure member rflow and the vector rflow_thr
809 * allows us to take advantage of a special feature in the CD1400 to avoid
810 * data loss even when the system interrupt latency is too high. These flags
811 * are to be used only with very special applications. Setting these flags
812 * requires the use of a special cable (DTR and RTS reversed). In the new
813 * CD1400-based boards (rev. 6.00 or later), there is no need for special
817 static char rflow_thr[] = { /* rflow threshold */
818 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
819 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
822 /* The Cyclom-Ye has placed the sequential chips in non-sequential
823 * address order. This look-up table overcomes that problem.
825 static int cy_chip_offset [] =
836 /* PCI related definitions */
838 static unsigned short cy_pci_nboard;
839 static unsigned short cy_isa_nboard;
840 static unsigned short cy_nboard;
842 static unsigned short cy_pci_dev_id[] = {
843 PCI_DEVICE_ID_CYCLOM_Y_Lo, /* PCI < 1Mb */
844 PCI_DEVICE_ID_CYCLOM_Y_Hi, /* PCI > 1Mb */
845 PCI_DEVICE_ID_CYCLOM_4Y_Lo, /* 4Y PCI < 1Mb */
846 PCI_DEVICE_ID_CYCLOM_4Y_Hi, /* 4Y PCI > 1Mb */
847 PCI_DEVICE_ID_CYCLOM_8Y_Lo, /* 8Y PCI < 1Mb */
848 PCI_DEVICE_ID_CYCLOM_8Y_Hi, /* 8Y PCI > 1Mb */
849 PCI_DEVICE_ID_CYCLOM_Z_Lo, /* Z PCI < 1Mb */
850 PCI_DEVICE_ID_CYCLOM_Z_Hi, /* Z PCI > 1Mb */
855 static void cy_start(struct tty_struct *);
856 static void set_line_char(struct cyclades_port *);
857 static int cyz_issue_cmd(struct cyclades_card *, uclong, ucchar, uclong);
859 static unsigned detect_isa_irq (volatile ucchar *);
860 #endif /* CONFIG_ISA */
862 static int cyclades_get_proc_info(char *, char **, off_t , int , int *, void *);
864 #ifndef CONFIG_CYZ_INTR
865 static void cyz_poll(unsigned long);
867 /* The Cyclades-Z polling cycle is defined by this variable */
868 static long cyz_polling_cycle = CZ_DEF_POLL;
870 static int cyz_timeron = 0;
871 static struct timer_list cyz_timerlist = TIMER_INITIALIZER(cyz_poll, 0, 0);
873 #else /* CONFIG_CYZ_INTR */
874 static void cyz_rx_restart(unsigned long);
875 static struct timer_list cyz_rx_full_timer[NR_PORTS];
876 #endif /* CONFIG_CYZ_INTR */
879 serial_paranoia_check(struct cyclades_port *info,
880 char *name, const char *routine)
882 #ifdef SERIAL_PARANOIA_CHECK
883 static const char *badmagic =
884 "cyc Warning: bad magic number for serial struct (%s) in %s\n";
885 static const char *badinfo =
886 "cyc Warning: null cyclades_port for (%s) in %s\n";
887 static const char *badrange =
888 "cyc Warning: cyclades_port out of range for (%s) in %s\n";
891 printk(badinfo, name, routine);
895 if( (long)info < (long)(&cy_port[0])
896 || (long)(&cy_port[NR_PORTS]) < (long)info ){
897 printk(badrange, name, routine);
901 if (info->magic != CYCLADES_MAGIC) {
902 printk(badmagic, name, routine);
907 } /* serial_paranoia_check */
910 * This routine is used by the interrupt handler to schedule
911 * processing in the software interrupt portion of the driver
912 * (also known as the "bottom half"). This can be called any
913 * number of times for any channel without harm.
916 cy_sched_event(struct cyclades_port *info, int event)
918 info->event |= 1 << event; /* remember what kind of event and who */
919 schedule_work(&info->tqueue);
920 } /* cy_sched_event */
924 * This routine is used to handle the "bottom half" processing for the
925 * serial driver, known also the "software interrupt" processing.
926 * This processing is done at the kernel interrupt level, after the
927 * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
928 * is where time-consuming activities which can not be done in the
929 * interrupt driver proper are done; the interrupt driver schedules
930 * them using cy_sched_event(), and they get done here.
932 * This is done through one level of indirection--the task queue.
933 * When a hardware interrupt service routine wants service by the
934 * driver's bottom half, it enqueues the appropriate tq_struct (one
935 * per port) to the keventd work queue and sets a request flag
936 * that the work queue be processed.
938 * Although this may seem unwieldy, it gives the system a way to
939 * pass an argument (in this case the pointer to the cyclades_port
940 * structure) to the bottom half of the driver. Previous kernels
941 * had to poll every port to see if that port needed servicing.
944 do_softint(void *private_)
946 struct cyclades_port *info = (struct cyclades_port *) private_;
947 struct tty_struct *tty;
953 if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) {
954 tty_hangup(info->tty);
955 wake_up_interruptible(&info->open_wait);
956 info->flags &= ~ASYNC_NORMAL_ACTIVE;
958 if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) {
959 wake_up_interruptible(&info->open_wait);
961 #ifdef CONFIG_CYZ_INTR
962 if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event)) {
963 if (cyz_rx_full_timer[info->line].function == NULL) {
964 cyz_rx_full_timer[info->line].expires = jiffies + 1;
965 cyz_rx_full_timer[info->line].function = cyz_rx_restart;
966 cyz_rx_full_timer[info->line].data = (unsigned long)info;
967 add_timer(&cyz_rx_full_timer[info->line]);
971 if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) {
972 wake_up_interruptible(&info->delta_msr_wait);
974 if (test_and_clear_bit(Cy_EVENT_WRITE_WAKEUP, &info->event)) {
975 if((tty->flags & (1<< TTY_DO_WRITE_WAKEUP))
976 && tty->ldisc.write_wakeup){
977 (tty->ldisc.write_wakeup)(tty);
979 wake_up_interruptible(&tty->write_wait);
982 if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) {
983 wake_up_interruptible(&info->shutdown_wait);
989 /***********************************************************/
990 /********* Start of block of Cyclom-Y specific code ********/
992 /* This routine waits up to 1000 micro-seconds for the previous
993 command to the Cirrus chip to complete and then issues the
994 new command. An error is returned if the previous command
995 didn't finish within the time limit.
997 This function is only called from inside spinlock-protected code.
1000 cyy_issue_cmd(volatile ucchar *base_addr, u_char cmd, int index)
1004 /* Check to see that the previous command has completed */
1005 for(i = 0 ; i < 100 ; i++){
1006 if (cy_readb(base_addr+(CyCCR<<index)) == 0){
1011 /* if the CCR never cleared, the previous command
1012 didn't finish within the "reasonable time" */
1013 if (i == 100) return (-1);
1015 /* Issue the new command */
1016 cy_writeb((u_long)base_addr+(CyCCR<<index), cmd);
1019 } /* cyy_issue_cmd */
1022 /* ISA interrupt detection code */
1024 detect_isa_irq (volatile ucchar *address)
1027 unsigned long irqs, flags;
1028 int save_xir, save_car;
1029 int index = 0; /* IRQ probing is only for ISA */
1031 /* forget possible initially masked and pending IRQ */
1032 irq = probe_irq_off(probe_irq_on());
1034 /* Clear interrupts on the board first */
1035 cy_writeb((u_long)address + (Cy_ClrIntr<<index), 0);
1036 /* Cy_ClrIntr is 0x1800 */
1038 irqs = probe_irq_on();
1042 /* Enable the Tx interrupts on the CD1400 */
1043 local_irq_save(flags);
1044 cy_writeb((u_long)address + (CyCAR<<index), 0);
1045 cyy_issue_cmd(address, CyCHAN_CTL|CyENB_XMTR, index);
1047 cy_writeb((u_long)address + (CyCAR<<index), 0);
1048 cy_writeb((u_long)address + (CySRER<<index),
1049 cy_readb(address + (CySRER<<index)) | CyTxRdy);
1050 local_irq_restore(flags);
1055 /* Check which interrupt is in use */
1056 irq = probe_irq_off(irqs);
1059 save_xir = (u_char) cy_readb(address + (CyTIR<<index));
1060 save_car = cy_readb(address + (CyCAR<<index));
1061 cy_writeb((u_long)address + (CyCAR<<index), (save_xir & 0x3));
1062 cy_writeb((u_long)address + (CySRER<<index),
1063 cy_readb(address + (CySRER<<index)) & ~CyTxRdy);
1064 cy_writeb((u_long)address + (CyTIR<<index), (save_xir & 0x3f));
1065 cy_writeb((u_long)address + (CyCAR<<index), (save_car));
1066 cy_writeb((u_long)address + (Cy_ClrIntr<<index), 0);
1067 /* Cy_ClrIntr is 0x1800 */
1069 return (irq > 0)? irq : 0;
1071 #endif /* CONFIG_ISA */
1073 /* The real interrupt service routine is called
1074 whenever the card wants its hand held--chars
1075 received, out buffer empty, modem change, etc.
1078 cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1080 struct tty_struct *tty;
1082 struct cyclades_card *cinfo;
1083 struct cyclades_port *info;
1084 volatile unsigned char *base_addr, *card_base_addr;
1086 int save_xir, channel, save_car;
1088 volatile int char_count;
1096 if((cinfo = (struct cyclades_card *)dev_id) == 0){
1097 #ifdef CY_DEBUG_INTERRUPTS
1098 printk("cyy_interrupt: spurious interrupt %d\n\r", irq);
1100 return IRQ_NONE; /* spurious interrupt */
1103 card_base_addr = (unsigned char *)cinfo->base_addr;
1104 index = cinfo->bus_index;
1107 /* This loop checks all chips in the card. Make a note whenever
1108 _any_ chip had some work to do, as this is considered an
1109 indication that there will be more to do. Only when no chip
1110 has any work does this outermost loop exit.
1114 for ( chip = 0 ; chip < cinfo->num_chips ; chip ++) {
1115 base_addr = (unsigned char *)
1116 (cinfo->base_addr + (cy_chip_offset[chip]<<index));
1118 while ( (status = cy_readb(base_addr+(CySVRR<<index))) != 0x00) {
1120 /* The purpose of the following test is to ensure that
1121 no chip can monopolize the driver. This forces the
1122 chips to be checked in a round-robin fashion (after
1123 draining each of a bunch (1000) of characters).
1125 if(1000<too_many++){
1128 if (status & CySRReceive) { /* reception interrupt */
1129 #ifdef CY_DEBUG_INTERRUPTS
1130 printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip);
1132 /* determine the channel & change to that context */
1133 spin_lock(&cinfo->card_lock);
1134 save_xir = (u_char) cy_readb(base_addr+(CyRIR<<index));
1135 channel = (u_short ) (save_xir & CyIRChannel);
1136 i = channel + chip * 4 + cinfo->first_line;
1138 info->last_active = jiffies;
1139 save_car = cy_readb(base_addr+(CyCAR<<index));
1140 cy_writeb((u_long)base_addr+(CyCAR<<index), save_xir);
1142 /* if there is nowhere to put the data, discard it */
1144 j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
1145 if ( j == CyIVRRxEx ) { /* exception */
1146 data = cy_readb(base_addr+(CyRDSR<<index));
1147 } else { /* normal character reception */
1148 char_count = cy_readb(base_addr+(CyRDCR<<index));
1149 while(char_count--){
1150 data = cy_readb(base_addr+(CyRDSR<<index));
1153 }else{ /* there is an open port for this data */
1155 j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
1156 if ( j == CyIVRRxEx ) { /* exception */
1157 data = cy_readb(base_addr+(CyRDSR<<index));
1159 /* For statistics only */
1162 else if(data & CyFRAME)
1163 info->icount.frame++;
1164 else if(data & CyPARITY)
1165 info->icount.parity++;
1166 else if(data & CyOVERRUN)
1167 info->icount.overrun++;
1169 if(data & info->ignore_status_mask){
1173 if (tty->flip.count < TTY_FLIPBUF_SIZE){
1175 if (data & info->read_status_mask){
1177 *tty->flip.flag_buf_ptr++ =
1179 *tty->flip.char_buf_ptr++ =
1180 cy_readb(base_addr+(CyRDSR<<index));
1182 if (info->flags & ASYNC_SAK){
1185 }else if(data & CyFRAME){
1186 *tty->flip.flag_buf_ptr++ =
1188 *tty->flip.char_buf_ptr++ =
1189 cy_readb(base_addr+(CyRDSR<<index));
1191 info->idle_stats.frame_errs++;
1192 }else if(data & CyPARITY){
1193 *tty->flip.flag_buf_ptr++ =
1195 *tty->flip.char_buf_ptr++ =
1196 cy_readb(base_addr+(CyRDSR<<index));
1198 info->idle_stats.parity_errs++;
1199 }else if(data & CyOVERRUN){
1200 *tty->flip.flag_buf_ptr++ =
1202 *tty->flip.char_buf_ptr++ = 0;
1204 /* If the flip buffer itself is
1205 overflowing, we still lose
1206 the next incoming character.
1209 < TTY_FLIPBUF_SIZE){
1211 *tty->flip.flag_buf_ptr++ =
1213 *tty->flip.char_buf_ptr++ =
1214 cy_readb(base_addr+(CyRDSR<<index));
1217 info->idle_stats.overruns++;
1218 /* These two conditions may imply */
1219 /* a normal read should be done. */
1220 /* }else if(data & CyTIMEOUT){ */
1221 /* }else if(data & CySPECHAR){ */
1223 *tty->flip.flag_buf_ptr++ = 0;
1224 *tty->flip.char_buf_ptr++ = 0;
1228 *tty->flip.flag_buf_ptr++ = 0;
1229 *tty->flip.char_buf_ptr++ = 0;
1233 /* there was a software buffer
1234 overrun and nothing could be
1236 info->icount.buf_overrun++;
1237 info->idle_stats.overruns++;
1239 } else { /* normal character reception */
1240 /* load # chars available from the chip */
1241 char_count = cy_readb(base_addr+(CyRDCR<<index));
1243 #ifdef CY_ENABLE_MONITORING
1244 ++info->mon.int_count;
1245 info->mon.char_count += char_count;
1246 if (char_count > info->mon.char_max)
1247 info->mon.char_max = char_count;
1248 info->mon.char_last = char_count;
1250 while(char_count--){
1251 if (tty->flip.count >= TTY_FLIPBUF_SIZE){
1255 data = cy_readb(base_addr+(CyRDSR<<index));
1256 *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
1257 *tty->flip.char_buf_ptr++ = data;
1258 info->idle_stats.recv_bytes++;
1264 info->idle_stats.recv_idle = jiffies;
1266 schedule_delayed_work(&tty->flip.work, 1);
1268 /* end of service */
1269 cy_writeb((u_long)base_addr+(CyRIR<<index), (save_xir & 0x3f));
1270 cy_writeb((u_long)base_addr+(CyCAR<<index), (save_car));
1271 spin_unlock(&cinfo->card_lock);
1275 if (status & CySRTransmit) { /* transmission interrupt */
1276 /* Since we only get here when the transmit buffer
1277 is empty, we know we can always stuff a dozen
1279 #ifdef CY_DEBUG_INTERRUPTS
1280 printk("cyy_interrupt: xmit intr, chip %d\n\r", chip);
1283 /* determine the channel & change to that context */
1284 spin_lock(&cinfo->card_lock);
1285 save_xir = (u_char) cy_readb(base_addr+(CyTIR<<index));
1286 channel = (u_short ) (save_xir & CyIRChannel);
1287 i = channel + chip * 4 + cinfo->first_line;
1288 save_car = cy_readb(base_addr+(CyCAR<<index));
1289 cy_writeb((u_long)base_addr+(CyCAR<<index), save_xir);
1291 /* validate the port# (as configured and open) */
1292 if( (i < 0) || (NR_PORTS <= i) ){
1293 cy_writeb((u_long)base_addr+(CySRER<<index),
1294 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
1298 info->last_active = jiffies;
1300 cy_writeb((u_long)base_addr+(CySRER<<index),
1301 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
1305 /* load the on-chip space for outbound data */
1306 char_count = info->xmit_fifo_size;
1308 if(info->x_char) { /* send special char */
1309 outch = info->x_char;
1310 cy_writeb((u_long)base_addr+(CyTDR<<index), outch);
1316 if (info->breakon || info->breakoff) {
1317 if (info->breakon) {
1318 cy_writeb((u_long)base_addr + (CyTDR<<index), 0);
1319 cy_writeb((u_long)base_addr + (CyTDR<<index), 0x81);
1323 if (info->breakoff) {
1324 cy_writeb((u_long)base_addr + (CyTDR<<index), 0);
1325 cy_writeb((u_long)base_addr + (CyTDR<<index), 0x83);
1331 while (char_count-- > 0){
1332 if (!info->xmit_cnt){
1333 if (cy_readb(base_addr+(CySRER<<index))&CyTxMpty) {
1334 cy_writeb((u_long)base_addr+(CySRER<<index),
1335 cy_readb(base_addr+(CySRER<<index)) &
1338 cy_writeb((u_long)base_addr+(CySRER<<index),
1339 ((cy_readb(base_addr+(CySRER<<index))
1345 if (info->xmit_buf == 0){
1346 cy_writeb((u_long)base_addr+(CySRER<<index),
1347 cy_readb(base_addr+(CySRER<<index)) &
1351 if (info->tty->stopped || info->tty->hw_stopped){
1352 cy_writeb((u_long)base_addr+(CySRER<<index),
1353 cy_readb(base_addr+(CySRER<<index)) &
1357 /* Because the Embedded Transmit Commands have
1358 been enabled, we must check to see if the
1359 escape character, NULL, is being sent. If it
1360 is, we must ensure that there is room for it
1361 to be doubled in the output stream. Therefore
1362 we no longer advance the pointer when the
1363 character is fetched, but rather wait until
1364 after the check for a NULL output character.
1365 This is necessary because there may not be
1366 room for the two chars needed to send a NULL.)
1368 outch = info->xmit_buf[info->xmit_tail];
1371 info->xmit_tail = (info->xmit_tail + 1)
1372 & (SERIAL_XMIT_SIZE - 1);
1373 cy_writeb((u_long)base_addr+(CyTDR<<index), outch);
1378 info->xmit_tail = (info->xmit_tail + 1)
1379 & (SERIAL_XMIT_SIZE - 1);
1380 cy_writeb((u_long)base_addr+(CyTDR<<index),
1382 cy_writeb((u_long)base_addr+(CyTDR<<index), 0);
1391 if (info->xmit_cnt < WAKEUP_CHARS) {
1392 cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
1395 /* end of service */
1396 cy_writeb((u_long)base_addr+(CyTIR<<index),
1398 cy_writeb((u_long)base_addr+(CyCAR<<index), (save_car));
1399 spin_unlock(&cinfo->card_lock);
1402 if (status & CySRModem) { /* modem interrupt */
1404 /* determine the channel & change to that context */
1405 spin_lock(&cinfo->card_lock);
1406 save_xir = (u_char) cy_readb(base_addr+(CyMIR<<index));
1407 channel = (u_short ) (save_xir & CyIRChannel);
1408 info = &cy_port[channel + chip * 4
1409 + cinfo->first_line];
1410 info->last_active = jiffies;
1411 save_car = cy_readb(base_addr+(CyCAR<<index));
1412 cy_writeb((u_long)base_addr+(CyCAR<<index), save_xir);
1414 mdm_change = cy_readb(base_addr+(CyMISR<<index));
1415 mdm_status = cy_readb(base_addr+(CyMSVR1<<index));
1417 if(info->tty == 0){/* no place for data, ignore it*/
1420 if (mdm_change & CyANY_DELTA) {
1421 /* For statistics only */
1422 if (mdm_change & CyDCD) info->icount.dcd++;
1423 if (mdm_change & CyCTS) info->icount.cts++;
1424 if (mdm_change & CyDSR) info->icount.dsr++;
1425 if (mdm_change & CyRI) info->icount.rng++;
1427 cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
1430 if((mdm_change & CyDCD)
1431 && (info->flags & ASYNC_CHECK_CD)){
1432 if(mdm_status & CyDCD){
1433 cy_sched_event(info,
1434 Cy_EVENT_OPEN_WAKEUP);
1436 cy_sched_event(info,
1440 if((mdm_change & CyCTS)
1441 && (info->flags & ASYNC_CTS_FLOW)){
1442 if(info->tty->hw_stopped){
1443 if(mdm_status & CyCTS){
1444 /* cy_start isn't used
1446 info->tty->hw_stopped = 0;
1447 cy_writeb((u_long)base_addr+(CySRER<<index),
1448 cy_readb(base_addr+(CySRER<<index)) |
1450 cy_sched_event(info,
1451 Cy_EVENT_WRITE_WAKEUP);
1454 if(!(mdm_status & CyCTS)){
1455 /* cy_stop isn't used
1457 info->tty->hw_stopped = 1;
1458 cy_writeb((u_long)base_addr+(CySRER<<index),
1459 cy_readb(base_addr+(CySRER<<index)) &
1464 if(mdm_change & CyDSR){
1466 if(mdm_change & CyRI){
1469 /* end of service */
1470 cy_writeb((u_long)base_addr+(CyMIR<<index),
1472 cy_writeb((u_long)base_addr+(CyCAR<<index), save_car);
1473 spin_unlock(&cinfo->card_lock);
1475 } /* end while status != 0 */
1476 } /* end loop for chips... */
1479 /* clear interrupts */
1480 spin_lock(&cinfo->card_lock);
1481 cy_writeb((u_long)card_base_addr + (Cy_ClrIntr<<index), 0);
1482 /* Cy_ClrIntr is 0x1800 */
1483 spin_unlock(&cinfo->card_lock);
1485 } /* cyy_interrupt */
1487 /***********************************************************/
1488 /********* End of block of Cyclom-Y specific code **********/
1489 /******** Start of block of Cyclades-Z specific code *********/
1490 /***********************************************************/
1493 cyz_fetch_msg( struct cyclades_card *cinfo,
1494 uclong *channel, ucchar *cmd, uclong *param)
1496 struct FIRM_ID *firm_id;
1497 struct ZFW_CTRL *zfw_ctrl;
1498 struct BOARD_CTRL *board_ctrl;
1499 unsigned long loc_doorbell;
1501 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1502 if (!ISZLOADED(*cinfo)){
1505 zfw_ctrl = (struct ZFW_CTRL *)
1507 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1508 board_ctrl = &zfw_ctrl->board_ctrl;
1510 loc_doorbell = cy_readl(&((struct RUNTIME_9060 *)
1511 (cinfo->ctl_addr))->loc_doorbell);
1513 *cmd = (char)(0xff & loc_doorbell);
1514 *channel = cy_readl(&board_ctrl->fwcmd_channel);
1515 *param = (uclong)cy_readl(&board_ctrl->fwcmd_param);
1516 cy_writel(&((struct RUNTIME_9060 *)(cinfo->ctl_addr))->loc_doorbell,
1521 } /* cyz_fetch_msg */
1524 cyz_issue_cmd( struct cyclades_card *cinfo,
1525 uclong channel, ucchar cmd, uclong param)
1527 struct FIRM_ID *firm_id;
1528 struct ZFW_CTRL *zfw_ctrl;
1529 struct BOARD_CTRL *board_ctrl;
1530 volatile uclong *pci_doorbell;
1533 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1534 if (!ISZLOADED(*cinfo)){
1537 zfw_ctrl = (struct ZFW_CTRL *)
1539 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1540 board_ctrl = &zfw_ctrl->board_ctrl;
1543 pci_doorbell = (uclong *)(&((struct RUNTIME_9060 *)
1544 (cinfo->ctl_addr))->pci_doorbell);
1545 while( (cy_readl(pci_doorbell) & 0xff) != 0){
1546 if (index++ == 1000){
1547 return((int)(cy_readl(pci_doorbell) & 0xff));
1551 cy_writel((u_long)&board_ctrl->hcmd_channel, channel);
1552 cy_writel((u_long)&board_ctrl->hcmd_param , param);
1553 cy_writel((u_long)pci_doorbell, (long)cmd);
1556 } /* cyz_issue_cmd */
1559 cyz_handle_rx(struct cyclades_port *info, volatile struct CH_CTRL *ch_ctrl,
1560 volatile struct BUF_CTRL *buf_ctrl)
1562 struct cyclades_card *cinfo = &cy_card[info->card];
1563 struct tty_struct *tty = info->tty;
1564 volatile int char_count;
1570 volatile uclong rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr;
1572 rx_get = new_rx_get = cy_readl(&buf_ctrl->rx_get);
1573 rx_put = cy_readl(&buf_ctrl->rx_put);
1574 rx_bufsize = cy_readl(&buf_ctrl->rx_bufsize);
1575 rx_bufaddr = cy_readl(&buf_ctrl->rx_bufaddr);
1576 if (rx_put >= rx_get)
1577 char_count = rx_put - rx_get;
1579 char_count = rx_put - rx_get + rx_bufsize;
1582 info->last_active = jiffies;
1583 info->jiffies[1] = jiffies;
1585 #ifdef CY_ENABLE_MONITORING
1586 info->mon.int_count++;
1587 info->mon.char_count += char_count;
1588 if (char_count > info->mon.char_max)
1589 info->mon.char_max = char_count;
1590 info->mon.char_last = char_count;
1593 /* flush received characters */
1594 new_rx_get = (new_rx_get + char_count) & (rx_bufsize - 1);
1595 info->rflush_count++;
1598 /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
1599 for performance, but because of buffer boundaries, there
1600 may be several steps to the operation */
1601 while(0 < (small_count =
1602 min_t(unsigned int, (rx_bufsize - new_rx_get),
1603 min_t(unsigned int, (TTY_FLIPBUF_SIZE - tty->flip.count), char_count))
1605 memcpy_fromio(tty->flip.char_buf_ptr,
1606 (char *)(cinfo->base_addr
1607 + rx_bufaddr + new_rx_get),
1610 tty->flip.char_buf_ptr += small_count;
1611 memset(tty->flip.flag_buf_ptr, TTY_NORMAL, small_count);
1612 tty->flip.flag_buf_ptr += small_count;
1613 new_rx_get = (new_rx_get + small_count) & (rx_bufsize - 1);
1614 char_count -= small_count;
1615 info->icount.rx += small_count;
1616 info->idle_stats.recv_bytes += small_count;
1617 tty->flip.count += small_count;
1620 while(char_count--){
1621 if (tty->flip.count >= N_TTY_BUF_SIZE - tty->read_cnt)
1624 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
1627 data = cy_readb(cinfo->base_addr + rx_bufaddr + new_rx_get);
1628 new_rx_get = (new_rx_get + 1) & (rx_bufsize - 1);
1630 *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
1631 *tty->flip.char_buf_ptr++ = data;
1632 info->idle_stats.recv_bytes++;
1636 #ifdef CONFIG_CYZ_INTR
1637 /* Recalculate the number of chars in the RX buffer and issue
1638 a cmd in case it's higher than the RX high water mark */
1639 rx_put = cy_readl(&buf_ctrl->rx_put);
1640 if (rx_put >= rx_get)
1641 char_count = rx_put - rx_get;
1643 char_count = rx_put - rx_get + rx_bufsize;
1644 if(char_count >= cy_readl(&buf_ctrl->rx_threshold)) {
1645 cy_sched_event(info, Cy_EVENT_Z_RX_FULL);
1648 info->idle_stats.recv_idle = jiffies;
1649 schedule_delayed_work(&tty->flip.work, 1);
1652 cy_writel(&buf_ctrl->rx_get, new_rx_get);
1657 cyz_handle_tx(struct cyclades_port *info, volatile struct CH_CTRL *ch_ctrl,
1658 volatile struct BUF_CTRL *buf_ctrl)
1660 struct cyclades_card *cinfo = &cy_card[info->card];
1661 struct tty_struct *tty = info->tty;
1663 volatile int char_count;
1667 volatile uclong tx_put, tx_get, tx_bufsize, tx_bufaddr;
1669 if (info->xmit_cnt <= 0) /* Nothing to transmit */
1672 tx_get = cy_readl(&buf_ctrl->tx_get);
1673 tx_put = cy_readl(&buf_ctrl->tx_put);
1674 tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize);
1675 tx_bufaddr = cy_readl(&buf_ctrl->tx_bufaddr);
1676 if (tx_put >= tx_get)
1677 char_count = tx_get - tx_put - 1 + tx_bufsize;
1679 char_count = tx_get - tx_put - 1;
1687 if(info->x_char) { /* send special char */
1688 data = info->x_char;
1690 cy_writeb((cinfo->base_addr + tx_bufaddr + tx_put), data);
1691 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1695 info->last_active = jiffies;
1696 info->jiffies[2] = jiffies;
1699 while(0 < (small_count =
1700 min_t(unsigned int, (tx_bufsize - tx_put),
1701 min_t(unsigned int, (SERIAL_XMIT_SIZE - info->xmit_tail),
1702 min_t(unsigned int, info->xmit_cnt, char_count))))) {
1704 memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put),
1705 &info->xmit_buf[info->xmit_tail],
1708 tx_put = (tx_put + small_count) & (tx_bufsize - 1);
1709 char_count -= small_count;
1710 info->icount.tx += small_count;
1711 info->xmit_cnt -= small_count;
1713 (info->xmit_tail + small_count) & (SERIAL_XMIT_SIZE - 1);
1714 info->last_active = jiffies;
1715 info->jiffies[2] = jiffies;
1718 while (info->xmit_cnt && char_count){
1719 data = info->xmit_buf[info->xmit_tail];
1721 info->xmit_tail = (info->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
1723 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1724 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1727 info->last_active = jiffies;
1728 info->jiffies[2] = jiffies;
1732 if (info->xmit_cnt < WAKEUP_CHARS) {
1733 cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
1736 cy_writel(&buf_ctrl->tx_put, tx_put);
1741 cyz_handle_cmd(struct cyclades_card *cinfo)
1743 struct tty_struct *tty;
1744 struct cyclades_port *info;
1745 static volatile struct FIRM_ID *firm_id;
1746 static volatile struct ZFW_CTRL *zfw_ctrl;
1747 static volatile struct BOARD_CTRL *board_ctrl;
1748 static volatile struct CH_CTRL *ch_ctrl;
1749 static volatile struct BUF_CTRL *buf_ctrl;
1753 uclong hw_ver, fw_ver;
1757 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1758 zfw_ctrl = (struct ZFW_CTRL *)
1760 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1761 board_ctrl = &(zfw_ctrl->board_ctrl);
1762 fw_ver = cy_readl(&board_ctrl->fw_version);
1763 hw_ver = cy_readl(&((struct RUNTIME_9060 *)(cinfo->ctl_addr))->mail_box_0);
1766 while(cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) {
1769 info = &cy_port[channel + cinfo->first_line];
1770 if((tty = info->tty) == 0) {
1773 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
1774 buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
1779 *tty->flip.flag_buf_ptr++ = TTY_PARITY;
1780 *tty->flip.char_buf_ptr++ = 0;
1786 *tty->flip.flag_buf_ptr++ = TTY_FRAME;
1787 *tty->flip.char_buf_ptr++ = 0;
1793 *tty->flip.flag_buf_ptr++ = TTY_BREAK;
1794 *tty->flip.char_buf_ptr++ = 0;
1801 if (info->flags & ASYNC_CHECK_CD){
1804 cy_readl(&ch_ctrl->rs_status)) & C_RS_DCD) {
1805 cy_sched_event(info, Cy_EVENT_OPEN_WAKEUP);
1807 cy_sched_event(info, Cy_EVENT_HANGUP);
1825 cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP);
1828 #ifdef CONFIG_CYZ_INTR
1832 /* Reception Interrupt */
1833 #ifdef CY_DEBUG_INTERRUPTS
1834 printk("cyz_interrupt: rcvd intr, card %d, port %ld\n\r",
1835 info->card, channel);
1837 cyz_handle_rx(info, ch_ctrl, buf_ctrl);
1842 /* Transmission Interrupt */
1843 #ifdef CY_DEBUG_INTERRUPTS
1844 printk("cyz_interrupt: xmit intr, card %d, port %ld\n\r",
1845 info->card, channel);
1847 cyz_handle_tx(info, ch_ctrl, buf_ctrl);
1849 #endif /* CONFIG_CYZ_INTR */
1851 /* should do something with this !!! */
1857 cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
1859 schedule_delayed_work(&tty->flip.work, 1);
1863 #ifdef CONFIG_CYZ_INTR
1865 cyz_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1867 struct cyclades_card *cinfo;
1869 if((cinfo = (struct cyclades_card *)dev_id) == 0){
1870 #ifdef CY_DEBUG_INTERRUPTS
1871 printk("cyz_interrupt: spurious interrupt %d\n\r", irq);
1873 return IRQ_NONE; /* spurious interrupt */
1876 if (!ISZLOADED(*cinfo)) {
1877 #ifdef CY_DEBUG_INTERRUPTS
1878 printk("cyz_interrupt: board not yet loaded (IRQ%d).\n\r", irq);
1883 /* Handle the interrupts */
1884 cyz_handle_cmd(cinfo);
1887 } /* cyz_interrupt */
1890 cyz_rx_restart(unsigned long arg)
1892 struct cyclades_port *info = (struct cyclades_port *)arg;
1894 int card = info->card;
1895 uclong channel = (info->line) - (cy_card[card].first_line);
1896 unsigned long flags;
1898 CY_LOCK(info, flags);
1899 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK2, 0L);
1901 printk("cyc:cyz_rx_restart retval on ttyC%d was %x\n",
1902 info->line, retval);
1904 cyz_rx_full_timer[info->line].function = NULL;
1905 CY_UNLOCK(info, flags);
1908 #else /* CONFIG_CYZ_INTR */
1911 cyz_poll(unsigned long arg)
1913 struct cyclades_card *cinfo;
1914 struct cyclades_port *info;
1915 struct tty_struct *tty;
1916 static volatile struct FIRM_ID *firm_id;
1917 static volatile struct ZFW_CTRL *zfw_ctrl;
1918 static volatile struct BOARD_CTRL *board_ctrl;
1919 static volatile struct CH_CTRL *ch_ctrl;
1920 static volatile struct BUF_CTRL *buf_ctrl;
1923 cyz_timerlist.expires = jiffies + (HZ);
1924 for (card = 0 ; card < NR_CARDS ; card++){
1925 cinfo = &cy_card[card];
1927 if (!IS_CYC_Z(*cinfo)) continue;
1928 if (!ISZLOADED(*cinfo)) continue;
1930 firm_id = (struct FIRM_ID *)(cinfo->base_addr + ID_ADDRESS);
1931 zfw_ctrl = (struct ZFW_CTRL *)
1933 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
1934 board_ctrl = &(zfw_ctrl->board_ctrl);
1936 /* Skip first polling cycle to avoid racing conditions with the FW */
1937 if (!cinfo->intr_enabled) {
1938 cinfo->nports = (int) cy_readl(&board_ctrl->n_channel);
1939 cinfo->intr_enabled = 1;
1943 cyz_handle_cmd(cinfo);
1945 for (port = 0 ; port < cinfo->nports ; port++) {
1946 info = &cy_port[ port + cinfo->first_line ];
1948 ch_ctrl = &(zfw_ctrl->ch_ctrl[port]);
1949 buf_ctrl = &(zfw_ctrl->buf_ctrl[port]);
1951 if (!info->throttle)
1952 cyz_handle_rx(info, ch_ctrl, buf_ctrl);
1953 cyz_handle_tx(info, ch_ctrl, buf_ctrl);
1955 /* poll every 'cyz_polling_cycle' period */
1956 cyz_timerlist.expires = jiffies + cyz_polling_cycle;
1958 add_timer(&cyz_timerlist);
1963 #endif /* CONFIG_CYZ_INTR */
1965 /********** End of block of Cyclades-Z specific code *********/
1966 /***********************************************************/
1969 /* This is called whenever a port becomes active;
1970 interrupts are enabled and DTR & RTS are turned on.
1973 startup(struct cyclades_port * info)
1975 unsigned long flags;
1977 unsigned char *base_addr;
1978 int card,chip,channel,index;
1982 channel = (info->line) - (cy_card[card].first_line);
1984 page = get_zeroed_page(GFP_KERNEL);
1988 CY_LOCK(info, flags);
1990 if (info->flags & ASYNC_INITIALIZED){
1997 set_bit(TTY_IO_ERROR, &info->tty->flags);
2006 info->xmit_buf = (unsigned char *) page;
2008 CY_UNLOCK(info, flags);
2010 set_line_char(info);
2012 if (!IS_CYC_Z(cy_card[card])) {
2015 index = cy_card[card].bus_index;
2016 base_addr = (unsigned char*)
2017 (cy_card[card].base_addr + (cy_chip_offset[chip]<<index));
2019 #ifdef CY_DEBUG_OPEN
2020 printk("cyc startup card %d, chip %d, channel %d, base_addr %lx\n",
2021 card, chip, channel, (long)base_addr);/**/
2024 CY_LOCK(info, flags);
2026 cy_writeb((ulong)base_addr+(CyCAR<<index), (u_char)channel);
2028 cy_writeb((ulong)base_addr+(CyRTPR<<index), (info->default_timeout
2029 ? info->default_timeout : 0x02)); /* 10ms rx timeout */
2031 cyy_issue_cmd(base_addr,CyCHAN_CTL|CyENB_RCVR|CyENB_XMTR,index);
2033 cy_writeb((ulong)base_addr+(CyCAR<<index), (u_char)channel);
2034 cy_writeb((ulong)base_addr+(CyMSVR1<<index), CyRTS);
2035 cy_writeb((ulong)base_addr+(CyMSVR2<<index), CyDTR);
2038 printk("cyc:startup raising DTR\n");
2039 printk(" status: 0x%x, 0x%x\n",
2040 cy_readb(base_addr+(CyMSVR1<<index)),
2041 cy_readb(base_addr+(CyMSVR2<<index)));
2044 cy_writeb((u_long)base_addr+(CySRER<<index),
2045 cy_readb(base_addr+(CySRER<<index)) | CyRxData);
2046 info->flags |= ASYNC_INITIALIZED;
2049 clear_bit(TTY_IO_ERROR, &info->tty->flags);
2051 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
2052 info->breakon = info->breakoff = 0;
2053 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
2054 info->idle_stats.in_use =
2055 info->idle_stats.recv_idle =
2056 info->idle_stats.xmit_idle = jiffies;
2058 CY_UNLOCK(info, flags);
2061 struct FIRM_ID *firm_id;
2062 struct ZFW_CTRL *zfw_ctrl;
2063 struct BOARD_CTRL *board_ctrl;
2064 struct CH_CTRL *ch_ctrl;
2067 base_addr = (unsigned char*) (cy_card[card].base_addr);
2069 firm_id = (struct FIRM_ID *) (base_addr + ID_ADDRESS);
2070 if (!ISZLOADED(cy_card[card])){
2074 zfw_ctrl = (struct ZFW_CTRL *)
2075 (cy_card[card].base_addr +
2076 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2077 board_ctrl = &zfw_ctrl->board_ctrl;
2078 ch_ctrl = zfw_ctrl->ch_ctrl;
2080 #ifdef CY_DEBUG_OPEN
2081 printk("cyc startup Z card %d, channel %d, base_addr %lx\n",
2082 card, channel, (long)base_addr);/**/
2085 CY_LOCK(info, flags);
2087 cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE);
2089 #ifdef CONFIG_CYZ_INTR
2090 cy_writel(&ch_ctrl[channel].intr_enable,
2091 C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT|
2095 cy_writel(&ch_ctrl[channel].intr_enable,
2098 #endif /* CONFIG_CYZ_INTR */
2100 #ifdef CONFIG_CYZ_INTR
2101 cy_writel(&ch_ctrl[channel].intr_enable,
2102 C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT|
2105 cy_writel(&ch_ctrl[channel].intr_enable,
2107 #endif /* CONFIG_CYZ_INTR */
2110 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L);
2112 printk("cyc:startup(1) retval on ttyC%d was %x\n",
2113 info->line, retval);
2116 /* Flush RX buffers before raising DTR and RTS */
2117 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_RX, 0L);
2119 printk("cyc:startup(2) retval on ttyC%d was %x\n",
2120 info->line, retval);
2123 /* set timeout !!! */
2124 /* set RTS and DTR !!! */
2125 cy_writel(&ch_ctrl[channel].rs_control,
2126 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | C_RS_DTR) ;
2127 retval = cyz_issue_cmd(&cy_card[info->card],
2128 channel, C_CM_IOCTLM, 0L);
2130 printk("cyc:startup(3) retval on ttyC%d was %x\n",
2131 info->line, retval);
2134 printk("cyc:startup raising Z DTR\n");
2137 /* enable send, recv, modem !!! */
2139 info->flags |= ASYNC_INITIALIZED;
2141 clear_bit(TTY_IO_ERROR, &info->tty->flags);
2143 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
2144 info->breakon = info->breakoff = 0;
2145 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
2146 info->idle_stats.in_use =
2147 info->idle_stats.recv_idle =
2148 info->idle_stats.xmit_idle = jiffies;
2150 CY_UNLOCK(info, flags);
2153 #ifdef CY_DEBUG_OPEN
2154 printk(" cyc startup done\n");
2159 CY_UNLOCK(info, flags);
2165 start_xmit( struct cyclades_port *info )
2167 unsigned long flags;
2168 unsigned char *base_addr;
2169 int card,chip,channel,index;
2172 channel = (info->line) - (cy_card[card].first_line);
2173 if (!IS_CYC_Z(cy_card[card])) {
2176 index = cy_card[card].bus_index;
2177 base_addr = (unsigned char*)
2178 (cy_card[card].base_addr
2179 + (cy_chip_offset[chip]<<index));
2181 CY_LOCK(info, flags);
2182 cy_writeb((u_long)base_addr+(CyCAR<<index), channel);
2183 cy_writeb((u_long)base_addr+(CySRER<<index),
2184 cy_readb(base_addr+(CySRER<<index)) | CyTxRdy);
2185 CY_UNLOCK(info, flags);
2187 #ifdef CONFIG_CYZ_INTR
2190 CY_LOCK(info, flags);
2191 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK, 0L);
2193 printk("cyc:start_xmit retval on ttyC%d was %x\n",
2194 info->line, retval);
2196 CY_UNLOCK(info, flags);
2197 #else /* CONFIG_CYZ_INTR */
2198 /* Don't have to do anything at this time */
2199 #endif /* CONFIG_CYZ_INTR */
2204 * This routine shuts down a serial port; interrupts are disabled,
2205 * and DTR is dropped if the hangup on close termio flag is on.
2208 shutdown(struct cyclades_port * info)
2210 unsigned long flags;
2211 unsigned char *base_addr;
2212 int card,chip,channel,index;
2214 if (!(info->flags & ASYNC_INITIALIZED)){
2219 channel = info->line - cy_card[card].first_line;
2220 if (!IS_CYC_Z(cy_card[card])) {
2223 index = cy_card[card].bus_index;
2224 base_addr = (unsigned char*)
2225 (cy_card[card].base_addr
2226 + (cy_chip_offset[chip]<<index));
2228 #ifdef CY_DEBUG_OPEN
2229 printk("cyc shutdown Y card %d, chip %d, channel %d, base_addr %lx\n",
2230 card, chip, channel, (long)base_addr);
2233 CY_LOCK(info, flags);
2235 /* Clear delta_msr_wait queue to avoid mem leaks. */
2236 wake_up_interruptible(&info->delta_msr_wait);
2238 if (info->xmit_buf){
2239 unsigned char * temp;
2240 temp = info->xmit_buf;
2242 free_page((unsigned long) temp);
2244 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
2245 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
2246 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
2247 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
2249 printk("cyc shutdown dropping DTR\n");
2250 printk(" status: 0x%x, 0x%x\n",
2251 cy_readb(base_addr+(CyMSVR1<<index)),
2252 cy_readb(base_addr+(CyMSVR2<<index)));
2255 cyy_issue_cmd(base_addr,CyCHAN_CTL|CyDIS_RCVR,index);
2256 /* it may be appropriate to clear _XMIT at
2257 some later date (after testing)!!! */
2260 set_bit(TTY_IO_ERROR, &info->tty->flags);
2262 info->flags &= ~ASYNC_INITIALIZED;
2263 CY_UNLOCK(info, flags);
2265 struct FIRM_ID *firm_id;
2266 struct ZFW_CTRL *zfw_ctrl;
2267 struct BOARD_CTRL *board_ctrl;
2268 struct CH_CTRL *ch_ctrl;
2271 base_addr = (unsigned char*) (cy_card[card].base_addr);
2272 #ifdef CY_DEBUG_OPEN
2273 printk("cyc shutdown Z card %d, channel %d, base_addr %lx\n",
2274 card, channel, (long)base_addr);
2277 firm_id = (struct FIRM_ID *) (base_addr + ID_ADDRESS);
2278 if (!ISZLOADED(cy_card[card])) {
2282 zfw_ctrl = (struct ZFW_CTRL *)
2283 (cy_card[card].base_addr +
2284 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2285 board_ctrl = &(zfw_ctrl->board_ctrl);
2286 ch_ctrl = zfw_ctrl->ch_ctrl;
2288 CY_LOCK(info, flags);
2290 if (info->xmit_buf){
2291 unsigned char * temp;
2292 temp = info->xmit_buf;
2294 free_page((unsigned long) temp);
2297 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
2298 cy_writel((u_long)&ch_ctrl[channel].rs_control,
2299 (uclong)(cy_readl(&ch_ctrl[channel].rs_control) &
2300 ~(C_RS_RTS | C_RS_DTR)));
2301 retval = cyz_issue_cmd(&cy_card[info->card],
2302 channel, C_CM_IOCTLM, 0L);
2304 printk("cyc:shutdown retval on ttyC%d was %x\n",
2305 info->line, retval);
2308 printk("cyc:shutdown dropping Z DTR\n");
2313 set_bit(TTY_IO_ERROR, &info->tty->flags);
2315 info->flags &= ~ASYNC_INITIALIZED;
2317 CY_UNLOCK(info, flags);
2320 #ifdef CY_DEBUG_OPEN
2321 printk(" cyc shutdown done\n");
2328 * ------------------------------------------------------------
2329 * cy_open() and friends
2330 * ------------------------------------------------------------
2334 block_til_ready(struct tty_struct *tty, struct file * filp,
2335 struct cyclades_port *info)
2337 DECLARE_WAITQUEUE(wait, current);
2338 struct cyclades_card *cinfo;
2339 unsigned long flags;
2340 int chip, channel,index;
2344 cinfo = &cy_card[info->card];
2345 channel = info->line - cinfo->first_line;
2348 * If the device is in the middle of being closed, then block
2349 * until it's done, and then try again.
2351 if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
2352 if (info->flags & ASYNC_CLOSING) {
2353 interruptible_sleep_on(&info->close_wait);
2355 return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
2359 * If non-blocking mode is set, then make the check up front
2362 if ((filp->f_flags & O_NONBLOCK) ||
2363 (tty->flags & (1 << TTY_IO_ERROR))) {
2364 info->flags |= ASYNC_NORMAL_ACTIVE;
2369 * Block waiting for the carrier detect and the line to become
2370 * free (i.e., not in use by the callout). While we are in
2371 * this loop, info->count is dropped by one, so that
2372 * cy_close() knows when to free things. We restore it upon
2373 * exit, either normal or abnormal.
2376 add_wait_queue(&info->open_wait, &wait);
2377 #ifdef CY_DEBUG_OPEN
2378 printk("cyc block_til_ready before block: ttyC%d, count = %d\n",
2379 info->line, info->count);/**/
2381 CY_LOCK(info, flags);
2382 if (!tty_hung_up_p(filp))
2384 CY_UNLOCK(info, flags);
2385 #ifdef CY_DEBUG_COUNT
2386 printk("cyc block_til_ready: (%d): decrementing count to %d\n",
2387 current->pid, info->count);
2389 info->blocked_open++;
2391 if (!IS_CYC_Z(*cinfo)) {
2394 index = cinfo->bus_index;
2395 base_addr = (char *)(cinfo->base_addr
2396 + (cy_chip_offset[chip]<<index));
2399 CY_LOCK(info, flags);
2400 if ((tty->termios->c_cflag & CBAUD)){
2401 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
2402 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
2403 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
2405 printk("cyc:block_til_ready raising DTR\n");
2406 printk(" status: 0x%x, 0x%x\n",
2407 cy_readb(base_addr+(CyMSVR1<<index)),
2408 cy_readb(base_addr+(CyMSVR2<<index)));
2411 CY_UNLOCK(info, flags);
2413 set_current_state(TASK_INTERRUPTIBLE);
2414 if (tty_hung_up_p(filp)
2415 || !(info->flags & ASYNC_INITIALIZED) ){
2416 retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
2417 -EAGAIN : -ERESTARTSYS);
2421 CY_LOCK(info, flags);
2422 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
2423 if (!(info->flags & ASYNC_CLOSING)
2425 || (cy_readb(base_addr+(CyMSVR1<<index)) & CyDCD))) {
2426 CY_UNLOCK(info, flags);
2429 CY_UNLOCK(info, flags);
2431 if (signal_pending(current)) {
2432 retval = -ERESTARTSYS;
2435 #ifdef CY_DEBUG_OPEN
2436 printk("cyc block_til_ready blocking: ttyC%d, count = %d\n",
2437 info->line, info->count);/**/
2442 struct FIRM_ID *firm_id;
2443 struct ZFW_CTRL *zfw_ctrl;
2444 struct BOARD_CTRL *board_ctrl;
2445 struct CH_CTRL *ch_ctrl;
2448 base_addr = (char *)(cinfo->base_addr);
2449 firm_id = (struct FIRM_ID *)
2450 (base_addr + ID_ADDRESS);
2451 if (!ISZLOADED(*cinfo)){
2452 current->state = TASK_RUNNING;
2453 remove_wait_queue(&info->open_wait, &wait);
2457 zfw_ctrl = (struct ZFW_CTRL *)
2458 (base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2459 board_ctrl = &zfw_ctrl->board_ctrl;
2460 ch_ctrl = zfw_ctrl->ch_ctrl;
2463 if ((tty->termios->c_cflag & CBAUD)){
2464 cy_writel(&ch_ctrl[channel].rs_control,
2465 cy_readl(&ch_ctrl[channel].rs_control) |
2466 (C_RS_RTS | C_RS_DTR));
2467 retval = cyz_issue_cmd(&cy_card[info->card],
2468 channel, C_CM_IOCTLM, 0L);
2470 printk("cyc:block_til_ready retval on ttyC%d was %x\n",
2471 info->line, retval);
2474 printk("cyc:block_til_ready raising Z DTR\n");
2478 set_current_state(TASK_INTERRUPTIBLE);
2479 if (tty_hung_up_p(filp)
2480 || !(info->flags & ASYNC_INITIALIZED) ){
2481 retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
2482 -EAGAIN : -ERESTARTSYS);
2485 if (!(info->flags & ASYNC_CLOSING)
2487 || (cy_readl(&ch_ctrl[channel].rs_status) & C_RS_DCD))) {
2490 if (signal_pending(current)) {
2491 retval = -ERESTARTSYS;
2494 #ifdef CY_DEBUG_OPEN
2495 printk("cyc block_til_ready blocking: ttyC%d, count = %d\n",
2496 info->line, info->count);/**/
2501 current->state = TASK_RUNNING;
2502 remove_wait_queue(&info->open_wait, &wait);
2503 if (!tty_hung_up_p(filp)){
2505 #ifdef CY_DEBUG_COUNT
2506 printk("cyc:block_til_ready (%d): incrementing count to %d\n",
2507 current->pid, info->count);
2510 info->blocked_open--;
2511 #ifdef CY_DEBUG_OPEN
2512 printk("cyc:block_til_ready after blocking: ttyC%d, count = %d\n",
2513 info->line, info->count);/**/
2517 info->flags |= ASYNC_NORMAL_ACTIVE;
2519 } /* block_til_ready */
2523 * This routine is called whenever a serial port is opened. It
2524 * performs the serial-specific initialization for the tty structure.
2527 cy_open(struct tty_struct *tty, struct file * filp)
2529 struct cyclades_port *info;
2534 if ((line < 0) || (NR_PORTS <= line)){
2537 info = &cy_port[line];
2538 if (info->line < 0){
2542 /* If the card's firmware hasn't been loaded,
2543 treat it as absent from the system. This
2544 will make the user pay attention.
2546 if (IS_CYC_Z(cy_card[info->card])) {
2547 struct cyclades_card *cinfo = &cy_card[info->card];
2548 struct FIRM_ID *firm_id = (struct FIRM_ID *)
2549 (cinfo->base_addr + ID_ADDRESS);
2551 if (!ISZLOADED(*cinfo)) {
2552 if (((ZE_V1 ==cy_readl(&((struct RUNTIME_9060 *)
2553 (cinfo->ctl_addr))->mail_box_0)) &&
2554 Z_FPGA_CHECK (*cinfo)) &&
2555 (ZFIRM_HLT == cy_readl (&firm_id->signature)))
2557 printk ("cyc:Cyclades-Z Error: you need an external power supply for this number of ports.\n\rFirmware halted.\r\n");
2559 printk("cyc:Cyclades-Z firmware not yet loaded\n");
2563 #ifdef CONFIG_CYZ_INTR
2565 /* In case this Z board is operating in interrupt mode, its
2566 interrupts should be enabled as soon as the first open happens
2567 to one of its ports. */
2568 if (!cinfo->intr_enabled) {
2569 struct ZFW_CTRL *zfw_ctrl;
2570 struct BOARD_CTRL *board_ctrl;
2572 zfw_ctrl = (struct ZFW_CTRL *)
2574 (cy_readl (&firm_id->zfwctrl_addr) & 0xfffff));
2576 board_ctrl = &zfw_ctrl->board_ctrl;
2578 /* Enable interrupts on the PLX chip */
2579 cy_writew(cinfo->ctl_addr+0x68,
2580 cy_readw(cinfo->ctl_addr+0x68)|0x0900);
2581 /* Enable interrupts on the FW */
2582 retval = cyz_issue_cmd(cinfo,
2583 0, C_CM_IRQ_ENBL, 0L);
2585 printk("cyc:IRQ enable retval was %x\n", retval);
2587 cinfo->nports = (int) cy_readl (&board_ctrl->n_channel);
2588 cinfo->intr_enabled = 1;
2591 #endif /* CONFIG_CYZ_INTR */
2592 /* Make sure this Z port really exists in hardware */
2593 if (info->line > (cinfo->first_line + cinfo->nports - 1))
2596 #ifdef CY_DEBUG_OTHER
2597 printk("cyc:cy_open ttyC%d\n", info->line); /* */
2599 tty->driver_data = info;
2601 if (serial_paranoia_check(info, tty->name, "cy_open")){
2604 #ifdef CY_DEBUG_OPEN
2605 printk("cyc:cy_open ttyC%d, count = %d\n",
2606 info->line, info->count);/**/
2609 #ifdef CY_DEBUG_COUNT
2610 printk("cyc:cy_open (%d): incrementing count to %d\n",
2611 current->pid, info->count);
2614 page = get_zeroed_page(GFP_KERNEL);
2620 tmp_buf = (unsigned char *) page;
2624 * If the port is the middle of closing, bail out now
2626 if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
2627 if (info->flags & ASYNC_CLOSING)
2628 interruptible_sleep_on(&info->close_wait);
2629 return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
2633 * Start up serial port
2635 retval = startup(info);
2640 retval = block_til_ready(tty, filp, info);
2642 #ifdef CY_DEBUG_OPEN
2643 printk("cyc:cy_open returning after block_til_ready with %d\n",
2651 #ifdef CY_DEBUG_OPEN
2652 printk(" cyc:cy_open done\n");/**/
2660 * cy_wait_until_sent() --- wait until the transmitter is empty
2663 cy_wait_until_sent(struct tty_struct *tty, int timeout)
2665 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
2666 unsigned char *base_addr;
2667 int card,chip,channel,index;
2668 unsigned long orig_jiffies;
2671 if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent"))
2674 if (info->xmit_fifo_size == 0)
2675 return; /* Just in case.... */
2678 orig_jiffies = jiffies;
2680 * Set the check interval to be 1/5 of the estimated time to
2681 * send a single character, and make it at least 1. The check
2682 * interval should also be less than the timeout.
2684 * Note: we have to use pretty tight timings here to satisfy
2687 char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
2688 char_time = char_time / 5;
2694 char_time = min(char_time, timeout);
2696 * If the transmitter hasn't cleared in twice the approximate
2697 * amount of time to send the entire FIFO, it probably won't
2698 * ever clear. This assumes the UART isn't doing flow
2699 * control, which is currently the case. Hence, if it ever
2700 * takes longer than info->timeout, this is probably due to a
2701 * UART bug of some kind. So, we clamp the timeout parameter at
2704 if (!timeout || timeout > 2*info->timeout)
2705 timeout = 2*info->timeout;
2706 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2707 printk("In cy_wait_until_sent(%d) check=%lu...", timeout, char_time);
2708 printk("jiff=%lu...", jiffies);
2711 channel = (info->line) - (cy_card[card].first_line);
2712 if (!IS_CYC_Z(cy_card[card])) {
2715 index = cy_card[card].bus_index;
2716 base_addr = (unsigned char *)
2717 (cy_card[card].base_addr + (cy_chip_offset[chip]<<index));
2718 while (cy_readb(base_addr+(CySRER<<index)) & CyTxRdy) {
2719 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2720 printk("Not clean (jiff=%lu)...", jiffies);
2722 current->state = TASK_INTERRUPTIBLE;
2723 schedule_timeout(char_time);
2724 if (signal_pending(current))
2726 if (timeout && time_after(jiffies, orig_jiffies + timeout))
2729 current->state = TASK_RUNNING;
2733 /* Run one more char cycle */
2734 current->state = TASK_INTERRUPTIBLE;
2735 schedule_timeout(char_time * 5);
2736 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2737 printk("Clean (jiff=%lu)...done\n", jiffies);
2742 * This routine is called when a particular tty device is closed.
2745 cy_close(struct tty_struct *tty, struct file *filp)
2747 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2748 unsigned long flags;
2750 #ifdef CY_DEBUG_OTHER
2751 printk("cyc:cy_close ttyC%d\n", info->line);
2754 if (!info || serial_paranoia_check(info, tty->name, "cy_close")){
2758 CY_LOCK(info, flags);
2759 /* If the TTY is being hung up, nothing to do */
2760 if (tty_hung_up_p(filp)) {
2761 CY_UNLOCK(info, flags);
2765 #ifdef CY_DEBUG_OPEN
2766 printk("cyc:cy_close ttyC%d, count = %d\n", info->line, info->count);
2768 if ((tty->count == 1) && (info->count != 1)) {
2770 * Uh, oh. tty->count is 1, which means that the tty
2771 * structure will be freed. Info->count should always
2772 * be one in these conditions. If it's greater than
2773 * one, we've got real problems, since it means the
2774 * serial port won't be shutdown.
2776 printk("cyc:cy_close: bad serial port count; tty->count is 1, "
2777 "info->count is %d\n", info->count);
2780 #ifdef CY_DEBUG_COUNT
2781 printk("cyc:cy_close at (%d): decrementing count to %d\n",
2782 current->pid, info->count - 1);
2784 if (--info->count < 0) {
2785 #ifdef CY_DEBUG_COUNT
2786 printk("cyc:cyc_close setting count to 0\n");
2791 CY_UNLOCK(info, flags);
2794 info->flags |= ASYNC_CLOSING;
2797 * Now we wait for the transmit buffer to clear; and we notify
2798 * the line discipline to only process XON/XOFF characters.
2801 CY_UNLOCK(info, flags);
2802 if (info->closing_wait != CY_CLOSING_WAIT_NONE) {
2803 tty_wait_until_sent(tty, info->closing_wait);
2805 CY_LOCK(info, flags);
2807 if (!IS_CYC_Z(cy_card[info->card])) {
2808 int channel = info->line - cy_card[info->card].first_line;
2809 int index = cy_card[info->card].bus_index;
2810 unsigned char *base_addr = (unsigned char *)
2811 (cy_card[info->card].base_addr +
2812 (cy_chip_offset[channel>>2] <<index));
2813 /* Stop accepting input */
2815 cy_writeb((ulong)base_addr+(CyCAR<<index), (u_char)channel);
2816 cy_writeb((u_long)base_addr+(CySRER<<index),
2817 cy_readb(base_addr+(CySRER<<index)) & ~CyRxData);
2818 if (info->flags & ASYNC_INITIALIZED) {
2819 /* Waiting for on-board buffers to be empty before closing
2821 CY_UNLOCK(info, flags);
2822 cy_wait_until_sent(tty, info->timeout);
2823 CY_LOCK(info, flags);
2827 /* Waiting for on-board buffers to be empty before closing the port */
2828 unsigned char *base_addr = (unsigned char *)
2829 cy_card[info->card].base_addr;
2830 struct FIRM_ID *firm_id = (struct FIRM_ID *) (base_addr + ID_ADDRESS);
2831 struct ZFW_CTRL *zfw_ctrl = (struct ZFW_CTRL *)
2832 (base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
2833 struct CH_CTRL *ch_ctrl = zfw_ctrl->ch_ctrl;
2834 int channel = info->line - cy_card[info->card].first_line;
2837 if (cy_readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) {
2838 retval = cyz_issue_cmd(&cy_card[info->card], channel,
2841 printk("cyc:cy_close retval on ttyC%d was %x\n",
2842 info->line, retval);
2844 CY_UNLOCK(info, flags);
2845 interruptible_sleep_on(&info->shutdown_wait);
2846 CY_LOCK(info, flags);
2851 CY_UNLOCK(info, flags);
2853 if (tty->driver->flush_buffer)
2854 tty->driver->flush_buffer(tty);
2855 if (tty->ldisc.flush_buffer)
2856 tty->ldisc.flush_buffer(tty);
2857 CY_LOCK(info, flags);
2862 if (info->blocked_open) {
2863 CY_UNLOCK(info, flags);
2864 if (info->close_delay) {
2865 current->state = TASK_INTERRUPTIBLE;
2866 schedule_timeout(info->close_delay);
2868 wake_up_interruptible(&info->open_wait);
2869 CY_LOCK(info, flags);
2871 info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
2872 wake_up_interruptible(&info->close_wait);
2874 #ifdef CY_DEBUG_OTHER
2875 printk(" cyc:cy_close done\n");
2878 CY_UNLOCK(info, flags);
2883 /* This routine gets called when tty_write has put something into
2884 * the write_queue. The characters may come from user space or
2887 * This routine will return the number of characters actually
2888 * accepted for writing.
2890 * If the port is not already transmitting stuff, start it off by
2891 * enabling interrupts. The interrupt service routine will then
2892 * ensure that the characters are sent.
2893 * If the port is already active, there is no need to kick it.
2897 cy_write(struct tty_struct * tty, int from_user,
2898 const unsigned char *buf, int count)
2900 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2901 unsigned long flags;
2905 printk("cyc:cy_write ttyC%d\n", info->line); /* */
2908 if (serial_paranoia_check(info, tty->name, "cy_write")){
2912 if (!tty || !info->xmit_buf || !tmp_buf){
2921 c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1),
2922 (int)(SERIAL_XMIT_SIZE - info->xmit_head)));
2926 c -= copy_from_user(tmp_buf, buf, c);
2933 CY_LOCK(info, flags);
2934 c1 = min(c, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1),
2935 (int)(SERIAL_XMIT_SIZE - info->xmit_head)));
2939 memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
2940 info->xmit_head = ((info->xmit_head + c) & (SERIAL_XMIT_SIZE-1));
2941 info->xmit_cnt += c;
2942 CY_UNLOCK(info, flags);
2949 CY_LOCK(info, flags);
2951 c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1),
2952 (int)(SERIAL_XMIT_SIZE - info->xmit_head)));
2957 memcpy(info->xmit_buf + info->xmit_head, buf, c);
2958 info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
2959 info->xmit_cnt += c;
2964 CY_UNLOCK(info, flags);
2967 info->idle_stats.xmit_bytes += ret;
2968 info->idle_stats.xmit_idle = jiffies;
2970 if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) {
2978 * This routine is called by the kernel to write a single
2979 * character to the tty device. If the kernel uses this routine,
2980 * it must call the flush_chars() routine (if defined) when it is
2981 * done stuffing characters into the driver. If there is no room
2982 * in the queue, the character is ignored.
2985 cy_put_char(struct tty_struct *tty, unsigned char ch)
2987 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2988 unsigned long flags;
2991 printk("cyc:cy_put_char ttyC%d\n", info->line);
2994 if (serial_paranoia_check(info, tty->name, "cy_put_char"))
2997 if (!tty || !info->xmit_buf)
3000 CY_LOCK(info, flags);
3001 if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
3002 CY_UNLOCK(info, flags);
3006 info->xmit_buf[info->xmit_head++] = ch;
3007 info->xmit_head &= SERIAL_XMIT_SIZE - 1;
3009 info->idle_stats.xmit_bytes++;
3010 info->idle_stats.xmit_idle = jiffies;
3011 CY_UNLOCK(info, flags);
3016 * This routine is called by the kernel after it has written a
3017 * series of characters to the tty device using put_char().
3020 cy_flush_chars(struct tty_struct *tty)
3022 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
3025 printk("cyc:cy_flush_chars ttyC%d\n", info->line); /* */
3028 if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
3031 if (info->xmit_cnt <= 0 || tty->stopped
3032 || tty->hw_stopped || !info->xmit_buf)
3036 } /* cy_flush_chars */
3040 * This routine returns the numbers of characters the tty driver
3041 * will accept for queuing to be written. This number is subject
3042 * to change as output buffers get emptied, or if the output flow
3043 * control is activated.
3046 cy_write_room(struct tty_struct *tty)
3048 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
3052 printk("cyc:cy_write_room ttyC%d\n", info->line); /* */
3055 if (serial_paranoia_check(info, tty->name, "cy_write_room"))
3057 ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
3061 } /* cy_write_room */
3065 cy_chars_in_buffer(struct tty_struct *tty)
3067 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
3070 if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
3074 channel = (info->line) - (cy_card[card].first_line);
3076 #ifdef Z_EXT_CHARS_IN_BUFFER
3077 if (!IS_CYC_Z(cy_card[card])) {
3078 #endif /* Z_EXT_CHARS_IN_BUFFER */
3080 printk("cyc:cy_chars_in_buffer ttyC%d %d\n",
3081 info->line, info->xmit_cnt); /* */
3083 return info->xmit_cnt;
3084 #ifdef Z_EXT_CHARS_IN_BUFFER
3086 static volatile struct FIRM_ID *firm_id;
3087 static volatile struct ZFW_CTRL *zfw_ctrl;
3088 static volatile struct CH_CTRL *ch_ctrl;
3089 static volatile struct BUF_CTRL *buf_ctrl;
3091 volatile uclong tx_put, tx_get, tx_bufsize;
3093 firm_id = (struct FIRM_ID *)(cy_card[card].base_addr + ID_ADDRESS);
3094 zfw_ctrl = (struct ZFW_CTRL *)
3095 (cy_card[card].base_addr +
3096 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3097 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
3098 buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
3100 tx_get = cy_readl(&buf_ctrl->tx_get);
3101 tx_put = cy_readl(&buf_ctrl->tx_put);
3102 tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize);
3103 if (tx_put >= tx_get)
3104 char_count = tx_put - tx_get;
3106 char_count = tx_put - tx_get + tx_bufsize;
3108 printk("cyc:cy_chars_in_buffer ttyC%d %d\n",
3109 info->line, info->xmit_cnt + char_count); /* */
3111 return (info->xmit_cnt + char_count);
3113 #endif /* Z_EXT_CHARS_IN_BUFFER */
3114 } /* cy_chars_in_buffer */
3118 * ------------------------------------------------------------
3119 * cy_ioctl() and friends
3120 * ------------------------------------------------------------
3124 cyy_baud_calc(struct cyclades_port *info, uclong baud)
3126 int co, co_val, bpr;
3127 uclong cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : 25000000);
3130 info->tbpr = info->tco = info->rbpr = info->rco = 0;
3134 /* determine which prescaler to use */
3135 for (co = 4, co_val = 2048; co; co--, co_val >>= 2) {
3136 if (cy_clock / co_val / baud > 63)
3140 bpr = (cy_clock / co_val * 2 / baud + 1) / 2;
3144 info->tbpr = info->rbpr = bpr;
3145 info->tco = info->rco = co;
3149 * This routine finds or computes the various line characteristics.
3150 * It used to be called config_setup
3153 set_line_char(struct cyclades_port * info)
3155 unsigned long flags;
3156 unsigned char *base_addr;
3157 int card,chip,channel,index;
3158 unsigned cflag, iflag;
3159 unsigned short chip_number;
3160 int baud, baud_rate = 0;
3164 if (!info->tty || !info->tty->termios){
3167 if (info->line == -1){
3170 cflag = info->tty->termios->c_cflag;
3171 iflag = info->tty->termios->c_iflag;
3174 * Set up the tty->alt_speed kludge
3177 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
3178 info->tty->alt_speed = 57600;
3179 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
3180 info->tty->alt_speed = 115200;
3181 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
3182 info->tty->alt_speed = 230400;
3183 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
3184 info->tty->alt_speed = 460800;
3188 channel = (info->line) - (cy_card[card].first_line);
3189 chip_number = channel / 4;
3191 if (!IS_CYC_Z(cy_card[card])) {
3193 index = cy_card[card].bus_index;
3196 baud = tty_get_baud_rate(info->tty);
3197 if ((baud == 38400) &&
3198 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3199 if (info->custom_divisor)
3200 baud_rate = info->baud / info->custom_divisor;
3202 baud_rate = info->baud;
3203 } else if (baud > CD1400_MAX_SPEED) {
3204 baud = CD1400_MAX_SPEED;
3206 /* find the baud index */
3207 for (i = 0; i < 20; i++) {
3208 if (baud == baud_table[i]) {
3213 i = 19; /* CD1400_MAX_SPEED */
3216 if ((baud == 38400) &&
3217 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3218 cyy_baud_calc(info, baud_rate);
3220 if(info->chip_rev >= CD1400_REV_J) {
3221 /* It is a CD1400 rev. J or later */
3222 info->tbpr = baud_bpr_60[i]; /* Tx BPR */
3223 info->tco = baud_co_60[i]; /* Tx CO */
3224 info->rbpr = baud_bpr_60[i]; /* Rx BPR */
3225 info->rco = baud_co_60[i]; /* Rx CO */
3227 info->tbpr = baud_bpr_25[i]; /* Tx BPR */
3228 info->tco = baud_co_25[i]; /* Tx CO */
3229 info->rbpr = baud_bpr_25[i]; /* Rx BPR */
3230 info->rco = baud_co_25[i]; /* Rx CO */
3233 if (baud_table[i] == 134) {
3234 /* get it right for 134.5 baud */
3235 info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2;
3236 } else if ((baud == 38400) &&
3237 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3238 info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2;
3239 } else if (baud_table[i]) {
3240 info->timeout = (info->xmit_fifo_size*HZ*15/baud_table[i]) + 2;
3241 /* this needs to be propagated into the card info */
3245 /* By tradition (is it a standard?) a baud rate of zero
3246 implies the line should be/has been closed. A bit
3247 later in this routine such a test is performed. */
3249 /* byte size and parity */
3252 info->cor3 = (info->default_threshold
3253 ? info->default_threshold
3254 : baud_cor3[i]); /* receive threshold */
3256 switch(cflag & CSIZE){
3258 info->cor1 = Cy_5_BITS;
3261 info->cor1 = Cy_6_BITS;
3264 info->cor1 = Cy_7_BITS;
3267 info->cor1 = Cy_8_BITS;
3271 info->cor1 |= Cy_2_STOP;
3273 if (cflag & PARENB){
3274 if (cflag & PARODD){
3275 info->cor1 |= CyPARITY_O;
3277 info->cor1 |= CyPARITY_E;
3280 info->cor1 |= CyPARITY_NONE;
3283 /* CTS flow control flag */
3284 if (cflag & CRTSCTS){
3285 info->flags |= ASYNC_CTS_FLOW;
3286 info->cor2 |= CyCtsAE;
3288 info->flags &= ~ASYNC_CTS_FLOW;
3289 info->cor2 &= ~CyCtsAE;
3292 info->flags &= ~ASYNC_CHECK_CD;
3294 info->flags |= ASYNC_CHECK_CD;
3296 /***********************************************
3297 The hardware option, CyRtsAO, presents RTS when
3298 the chip has characters to send. Since most modems
3299 use RTS as reverse (inbound) flow control, this
3300 option is not used. If inbound flow control is
3301 necessary, DTR can be programmed to provide the
3302 appropriate signals for use with a non-standard
3303 cable. Contact Marcio Saito for details.
3304 ***********************************************/
3308 base_addr = (unsigned char*)
3309 (cy_card[card].base_addr
3310 + (cy_chip_offset[chip]<<index));
3312 CY_LOCK(info, flags);
3313 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3315 /* tx and rx baud rate */
3317 cy_writeb((u_long)base_addr+(CyTCOR<<index), info->tco);
3318 cy_writeb((u_long)base_addr+(CyTBPR<<index), info->tbpr);
3319 cy_writeb((u_long)base_addr+(CyRCOR<<index), info->rco);
3320 cy_writeb((u_long)base_addr+(CyRBPR<<index), info->rbpr);
3322 /* set line characteristics according configuration */
3324 cy_writeb((u_long)base_addr+(CySCHR1<<index),
3325 START_CHAR(info->tty));
3326 cy_writeb((u_long)base_addr+(CySCHR2<<index),
3327 STOP_CHAR(info->tty));
3328 cy_writeb((u_long)base_addr+(CyCOR1<<index), info->cor1);
3329 cy_writeb((u_long)base_addr+(CyCOR2<<index), info->cor2);
3330 cy_writeb((u_long)base_addr+(CyCOR3<<index), info->cor3);
3331 cy_writeb((u_long)base_addr+(CyCOR4<<index), info->cor4);
3332 cy_writeb((u_long)base_addr+(CyCOR5<<index), info->cor5);
3334 cyy_issue_cmd(base_addr,
3335 CyCOR_CHANGE|CyCOR1ch|CyCOR2ch|CyCOR3ch,index);
3337 cy_writeb((u_long)base_addr+(CyCAR<<index),
3338 (u_char)channel); /* !!! Is this needed? */
3339 cy_writeb((u_long)base_addr+(CyRTPR<<index), (info->default_timeout
3340 ? info->default_timeout
3341 : 0x02)); /* 10ms rx timeout */
3343 if (C_CLOCAL(info->tty)) {
3344 /* without modem intr */
3345 cy_writeb((u_long)base_addr+(CySRER<<index),
3346 cy_readb(base_addr+(CySRER<<index)) | CyMdmCh);
3347 /* act on 1->0 modem transitions */
3348 if ((cflag & CRTSCTS) && info->rflow) {
3349 cy_writeb((u_long)base_addr+(CyMCOR1<<index),
3350 (CyCTS|rflow_thr[i]));
3352 cy_writeb((u_long)base_addr+(CyMCOR1<<index), CyCTS);
3354 /* act on 0->1 modem transitions */
3355 cy_writeb((u_long)base_addr+(CyMCOR2<<index), CyCTS);
3357 /* without modem intr */
3358 cy_writeb((u_long)base_addr+(CySRER<<index),
3359 cy_readb(base_addr+(CySRER<<index)) | CyMdmCh);
3360 /* act on 1->0 modem transitions */
3361 if ((cflag & CRTSCTS) && info->rflow) {
3362 cy_writeb((u_long)base_addr+(CyMCOR1<<index),
3363 (CyDSR|CyCTS|CyRI|CyDCD|rflow_thr[i]));
3365 cy_writeb((u_long)base_addr+(CyMCOR1<<index),
3366 CyDSR|CyCTS|CyRI|CyDCD);
3368 /* act on 0->1 modem transitions */
3369 cy_writeb((u_long)base_addr+(CyMCOR2<<index),
3370 CyDSR|CyCTS|CyRI|CyDCD);
3373 if(i == 0){ /* baud rate is zero, turn off line */
3374 if (info->rtsdtr_inv) {
3375 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
3377 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
3380 printk("cyc:set_line_char dropping DTR\n");
3381 printk(" status: 0x%x, 0x%x\n",
3382 cy_readb(base_addr+(CyMSVR1<<index)),
3383 cy_readb(base_addr+(CyMSVR2<<index)));
3386 if (info->rtsdtr_inv) {
3387 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
3389 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
3392 printk("cyc:set_line_char raising DTR\n");
3393 printk(" status: 0x%x, 0x%x\n",
3394 cy_readb(base_addr+(CyMSVR1<<index)),
3395 cy_readb(base_addr+(CyMSVR2<<index)));
3400 clear_bit(TTY_IO_ERROR, &info->tty->flags);
3402 CY_UNLOCK(info, flags);
3405 struct FIRM_ID *firm_id;
3406 struct ZFW_CTRL *zfw_ctrl;
3407 struct BOARD_CTRL *board_ctrl;
3408 struct CH_CTRL *ch_ctrl;
3409 struct BUF_CTRL *buf_ctrl;
3413 firm_id = (struct FIRM_ID *)
3414 (cy_card[card].base_addr + ID_ADDRESS);
3415 if (!ISZLOADED(cy_card[card])) {
3419 zfw_ctrl = (struct ZFW_CTRL *)
3420 (cy_card[card].base_addr +
3421 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3422 board_ctrl = &zfw_ctrl->board_ctrl;
3423 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
3424 buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
3427 baud = tty_get_baud_rate(info->tty);
3428 if ((baud == 38400) &&
3429 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3430 if (info->custom_divisor)
3431 baud_rate = info->baud / info->custom_divisor;
3433 baud_rate = info->baud;
3434 } else if (baud > CYZ_MAX_SPEED) {
3435 baud = CYZ_MAX_SPEED;
3437 cy_writel(&ch_ctrl->comm_baud , baud);
3440 /* get it right for 134.5 baud */
3441 info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2;
3442 } else if ((baud == 38400) &&
3443 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3444 info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2;
3446 info->timeout = (info->xmit_fifo_size*HZ*15/baud) + 2;
3447 /* this needs to be propagated into the card info */
3452 /* byte size and parity */
3453 switch(cflag & CSIZE){
3454 case CS5: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS5); break;
3455 case CS6: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS6); break;
3456 case CS7: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS7); break;
3457 case CS8: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS8); break;
3460 cy_writel(&ch_ctrl->comm_data_l,
3461 cy_readl(&ch_ctrl->comm_data_l) | C_DL_2STOP);
3463 cy_writel(&ch_ctrl->comm_data_l,
3464 cy_readl(&ch_ctrl->comm_data_l) | C_DL_1STOP);
3466 if (cflag & PARENB){
3467 if (cflag & PARODD){
3468 cy_writel(&ch_ctrl->comm_parity , C_PR_ODD);
3470 cy_writel(&ch_ctrl->comm_parity , C_PR_EVEN);
3473 cy_writel(&ch_ctrl->comm_parity , C_PR_NONE);
3476 /* CTS flow control flag */
3477 if (cflag & CRTSCTS){
3478 cy_writel(&ch_ctrl->hw_flow,
3479 cy_readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS);
3481 cy_writel(&ch_ctrl->hw_flow,
3482 cy_readl(&ch_ctrl->hw_flow) & ~(C_RS_CTS | C_RS_RTS));
3484 /* As the HW flow control is done in firmware, the driver doesn't
3485 need to care about it */
3486 info->flags &= ~ASYNC_CTS_FLOW;
3488 /* XON/XOFF/XANY flow control flags */
3491 sw_flow |= C_FL_OXX;
3493 sw_flow |= C_FL_OIXANY;
3495 cy_writel(&ch_ctrl->sw_flow, sw_flow);
3497 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L);
3499 printk("cyc:set_line_char retval on ttyC%d was %x\n",
3500 info->line, retval);
3503 /* CD sensitivity */
3504 if (cflag & CLOCAL){
3505 info->flags &= ~ASYNC_CHECK_CD;
3507 info->flags |= ASYNC_CHECK_CD;
3510 if(baud == 0){ /* baud rate is zero, turn off line */
3511 cy_writel(&ch_ctrl->rs_control,
3512 cy_readl(&ch_ctrl->rs_control) & ~C_RS_DTR);
3514 printk("cyc:set_line_char dropping Z DTR\n");
3517 cy_writel(&ch_ctrl->rs_control,
3518 cy_readl(&ch_ctrl->rs_control) | C_RS_DTR);
3520 printk("cyc:set_line_char raising Z DTR\n");
3524 retval = cyz_issue_cmd( &cy_card[card], channel, C_CM_IOCTLM, 0L);
3526 printk("cyc:set_line_char(2) retval on ttyC%d was %x\n",
3527 info->line, retval);
3531 clear_bit(TTY_IO_ERROR, &info->tty->flags);
3534 } /* set_line_char */
3538 get_serial_info(struct cyclades_port * info,
3539 struct serial_struct * retinfo)
3541 struct serial_struct tmp;
3542 struct cyclades_card *cinfo = &cy_card[info->card];
3546 memset(&tmp, 0, sizeof(tmp));
3547 tmp.type = info->type;
3548 tmp.line = info->line;
3549 tmp.port = info->card * 0x100 + info->line - cinfo->first_line;
3550 tmp.irq = cinfo->irq;
3551 tmp.flags = info->flags;
3552 tmp.close_delay = info->close_delay;
3553 tmp.baud_base = info->baud;
3554 tmp.custom_divisor = info->custom_divisor;
3555 tmp.hub6 = 0; /*!!!*/
3556 return copy_to_user(retinfo,&tmp,sizeof(*retinfo))?-EFAULT:0;
3557 } /* get_serial_info */
3561 set_serial_info(struct cyclades_port * info,
3562 struct serial_struct * new_info)
3564 struct serial_struct new_serial;
3565 struct cyclades_port old_info;
3567 if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
3571 if (!capable(CAP_SYS_ADMIN)) {
3572 if ((new_serial.close_delay != info->close_delay) ||
3573 (new_serial.baud_base != info->baud) ||
3574 ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) !=
3575 (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)))
3577 info->flags = ((info->flags & ~ASYNC_USR_MASK) |
3578 (new_serial.flags & ASYNC_USR_MASK));
3579 info->baud = new_serial.baud_base;
3580 info->custom_divisor = new_serial.custom_divisor;
3581 goto check_and_exit;
3586 * OK, past this point, all the error checking has been done.
3587 * At this point, we start making changes.....
3590 info->baud = new_serial.baud_base;
3591 info->custom_divisor = new_serial.custom_divisor;
3592 info->flags = ((info->flags & ~ASYNC_FLAGS) |
3593 (new_serial.flags & ASYNC_FLAGS));
3594 info->close_delay = new_serial.close_delay * HZ/100;
3595 info->closing_wait = new_serial.closing_wait * HZ/100;
3598 if (info->flags & ASYNC_INITIALIZED){
3599 set_line_char(info);
3602 return startup(info);
3604 } /* set_serial_info */
3607 * get_lsr_info - get line status register info
3609 * Purpose: Let user call ioctl() to get info when the UART physically
3610 * is emptied. On bus types like RS485, the transmitter must
3611 * release the bus after transmitting. This must be done when
3612 * the transmit shift register is empty, not be done when the
3613 * transmit holding register is empty. This functionality
3614 * allows an RS485 driver to be written in user space.
3616 static int get_lsr_info(struct cyclades_port *info, unsigned int *value)
3618 int card, chip, channel, index;
3619 unsigned char status;
3620 unsigned int result;
3621 unsigned long flags;
3622 unsigned char *base_addr;
3625 channel = (info->line) - (cy_card[card].first_line);
3626 if (!IS_CYC_Z(cy_card[card])) {
3629 index = cy_card[card].bus_index;
3630 base_addr = (unsigned char *)
3631 (cy_card[card].base_addr + (cy_chip_offset[chip]<<index));
3633 CY_LOCK(info, flags);
3634 status = cy_readb(base_addr+(CySRER<<index)) & (CyTxRdy|CyTxMpty);
3635 CY_UNLOCK(info, flags);
3636 result = (status ? 0 : TIOCSER_TEMT);
3638 /* Not supported yet */
3641 return cy_put_user(result, (unsigned long *) value);
3645 cy_tiocmget(struct tty_struct *tty, struct file *file)
3647 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3648 int card,chip,channel,index;
3649 unsigned char *base_addr;
3650 unsigned long flags;
3651 unsigned char status;
3652 unsigned long lstatus;
3653 unsigned int result;
3654 struct FIRM_ID *firm_id;
3655 struct ZFW_CTRL *zfw_ctrl;
3656 struct BOARD_CTRL *board_ctrl;
3657 struct CH_CTRL *ch_ctrl;
3659 if (serial_paranoia_check(info, tty->name, __FUNCTION__))
3663 channel = (info->line) - (cy_card[card].first_line);
3664 if (!IS_CYC_Z(cy_card[card])) {
3667 index = cy_card[card].bus_index;
3668 base_addr = (unsigned char*)
3669 (cy_card[card].base_addr
3670 + (cy_chip_offset[chip]<<index));
3672 CY_LOCK(info, flags);
3673 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3674 status = cy_readb(base_addr+(CyMSVR1<<index));
3675 status |= cy_readb(base_addr+(CyMSVR2<<index));
3676 CY_UNLOCK(info, flags);
3678 if (info->rtsdtr_inv) {
3679 result = ((status & CyRTS) ? TIOCM_DTR : 0)
3680 | ((status & CyDTR) ? TIOCM_RTS : 0);
3682 result = ((status & CyRTS) ? TIOCM_RTS : 0)
3683 | ((status & CyDTR) ? TIOCM_DTR : 0);
3685 result |= ((status & CyDCD) ? TIOCM_CAR : 0)
3686 | ((status & CyRI) ? TIOCM_RNG : 0)
3687 | ((status & CyDSR) ? TIOCM_DSR : 0)
3688 | ((status & CyCTS) ? TIOCM_CTS : 0);
3690 base_addr = (unsigned char*) (cy_card[card].base_addr);
3692 if (cy_card[card].num_chips != -1){
3696 firm_id = (struct FIRM_ID *)
3697 (cy_card[card].base_addr + ID_ADDRESS);
3698 if (ISZLOADED(cy_card[card])) {
3699 zfw_ctrl = (struct ZFW_CTRL *)
3700 (cy_card[card].base_addr +
3701 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3702 board_ctrl = &zfw_ctrl->board_ctrl;
3703 ch_ctrl = zfw_ctrl->ch_ctrl;
3704 lstatus = cy_readl(&ch_ctrl[channel].rs_status);
3705 result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0)
3706 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0)
3707 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0)
3708 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0)
3709 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0)
3710 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
3722 cy_tiocmset(struct tty_struct *tty, struct file *file,
3723 unsigned int set, unsigned int clear)
3725 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3726 int card,chip,channel,index;
3727 unsigned char *base_addr;
3728 unsigned long flags;
3729 struct FIRM_ID *firm_id;
3730 struct ZFW_CTRL *zfw_ctrl;
3731 struct BOARD_CTRL *board_ctrl;
3732 struct CH_CTRL *ch_ctrl;
3735 if (serial_paranoia_check(info, tty->name, __FUNCTION__))
3739 channel = (info->line) - (cy_card[card].first_line);
3740 if (!IS_CYC_Z(cy_card[card])) {
3743 index = cy_card[card].bus_index;
3744 base_addr = (unsigned char*)
3745 (cy_card[card].base_addr
3746 + (cy_chip_offset[chip]<<index));
3748 if (set & TIOCM_RTS){
3749 CY_LOCK(info, flags);
3750 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3751 if (info->rtsdtr_inv) {
3752 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
3754 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
3756 CY_UNLOCK(info, flags);
3758 if (clear & TIOCM_RTS) {
3759 CY_LOCK(info, flags);
3760 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3761 if (info->rtsdtr_inv) {
3762 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
3764 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
3766 CY_UNLOCK(info, flags);
3768 if (set & TIOCM_DTR){
3769 CY_LOCK(info, flags);
3770 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3771 if (info->rtsdtr_inv) {
3772 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
3774 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
3777 printk("cyc:set_modem_info raising DTR\n");
3778 printk(" status: 0x%x, 0x%x\n",
3779 cy_readb(base_addr+(CyMSVR1<<index)),
3780 cy_readb(base_addr+(CyMSVR2<<index)));
3782 CY_UNLOCK(info, flags);
3784 if (clear & TIOCM_DTR) {
3785 CY_LOCK(info, flags);
3786 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
3787 if (info->rtsdtr_inv) {
3788 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
3790 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
3794 printk("cyc:set_modem_info dropping DTR\n");
3795 printk(" status: 0x%x, 0x%x\n",
3796 cy_readb(base_addr+(CyMSVR1<<index)),
3797 cy_readb(base_addr+(CyMSVR2<<index)));
3799 CY_UNLOCK(info, flags);
3802 base_addr = (unsigned char*) (cy_card[card].base_addr);
3804 firm_id = (struct FIRM_ID *)
3805 (cy_card[card].base_addr + ID_ADDRESS);
3806 if (ISZLOADED(cy_card[card])) {
3807 zfw_ctrl = (struct ZFW_CTRL *)
3808 (cy_card[card].base_addr +
3809 (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff));
3810 board_ctrl = &zfw_ctrl->board_ctrl;
3811 ch_ctrl = zfw_ctrl->ch_ctrl;
3813 if (set & TIOCM_RTS){
3814 CY_LOCK(info, flags);
3815 cy_writel(&ch_ctrl[channel].rs_control,
3816 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS);
3817 CY_UNLOCK(info, flags);
3819 if (clear & TIOCM_RTS) {
3820 CY_LOCK(info, flags);
3821 cy_writel(&ch_ctrl[channel].rs_control,
3822 cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_RTS);
3823 CY_UNLOCK(info, flags);
3825 if (set & TIOCM_DTR){
3826 CY_LOCK(info, flags);
3827 cy_writel(&ch_ctrl[channel].rs_control,
3828 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_DTR);
3830 printk("cyc:set_modem_info raising Z DTR\n");
3832 CY_UNLOCK(info, flags);
3834 if (clear & TIOCM_DTR) {
3835 CY_LOCK(info, flags);
3836 cy_writel(&ch_ctrl[channel].rs_control,
3837 cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_DTR);
3839 printk("cyc:set_modem_info clearing Z DTR\n");
3841 CY_UNLOCK(info, flags);
3846 CY_LOCK(info, flags);
3847 retval = cyz_issue_cmd(&cy_card[info->card],
3848 channel, C_CM_IOCTLM,0L);
3850 printk("cyc:set_modem_info retval on ttyC%d was %x\n",
3851 info->line, retval);
3853 CY_UNLOCK(info, flags);
3859 * cy_break() --- routine which turns the break handling on or off
3862 cy_break(struct tty_struct *tty, int break_state)
3864 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3865 unsigned long flags;
3867 if (serial_paranoia_check(info, tty->name, "cy_break"))
3870 CY_LOCK(info, flags);
3871 if (!IS_CYC_Z(cy_card[info->card])) {
3872 /* Let the transmit ISR take care of this (since it
3873 requires stuffing characters into the output stream).
3875 if (break_state == -1) {
3876 if (!info->breakon) {
3878 if (!info->xmit_cnt) {
3879 CY_UNLOCK(info, flags);
3881 CY_LOCK(info, flags);
3885 if (!info->breakoff) {
3887 if (!info->xmit_cnt) {
3888 CY_UNLOCK(info, flags);
3890 CY_LOCK(info, flags);
3897 if (break_state == -1) {
3898 retval = cyz_issue_cmd(&cy_card[info->card],
3899 (info->line) - (cy_card[info->card].first_line),
3900 C_CM_SET_BREAK, 0L);
3902 printk("cyc:cy_break (set) retval on ttyC%d was %x\n",
3903 info->line, retval);
3906 retval = cyz_issue_cmd(&cy_card[info->card],
3907 (info->line) - (cy_card[info->card].first_line),
3908 C_CM_CLR_BREAK, 0L);
3910 printk("cyc:cy_break (clr) retval on ttyC%d was %x\n",
3911 info->line, retval);
3915 CY_UNLOCK(info, flags);
3919 get_mon_info(struct cyclades_port * info, struct cyclades_monitor * mon)
3922 if(copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor)))
3924 info->mon.int_count = 0;
3925 info->mon.char_count = 0;
3926 info->mon.char_max = 0;
3927 info->mon.char_last = 0;
3933 set_threshold(struct cyclades_port * info, unsigned long value)
3935 unsigned char *base_addr;
3936 int card,channel,chip,index;
3937 unsigned long flags;
3940 channel = info->line - cy_card[card].first_line;
3941 if (!IS_CYC_Z(cy_card[card])) {
3944 index = cy_card[card].bus_index;
3945 base_addr = (unsigned char*)
3946 (cy_card[card].base_addr
3947 + (cy_chip_offset[chip]<<index));
3949 info->cor3 &= ~CyREC_FIFO;
3950 info->cor3 |= value & CyREC_FIFO;
3952 CY_LOCK(info, flags);
3953 cy_writeb((u_long)base_addr+(CyCOR3<<index), info->cor3);
3954 cyy_issue_cmd(base_addr,CyCOR_CHANGE|CyCOR3ch,index);
3955 CY_UNLOCK(info, flags);
3960 }/* set_threshold */
3964 get_threshold(struct cyclades_port * info, unsigned long *value)
3966 unsigned char *base_addr;
3967 int card,channel,chip,index;
3971 channel = info->line - cy_card[card].first_line;
3972 if (!IS_CYC_Z(cy_card[card])) {
3975 index = cy_card[card].bus_index;
3976 base_addr = (unsigned char*)
3977 (cy_card[card].base_addr
3978 + (cy_chip_offset[chip]<<index));
3980 tmp = cy_readb(base_addr+(CyCOR3<<index)) & CyREC_FIFO;
3981 return cy_put_user(tmp,value);
3986 }/* get_threshold */
3990 set_default_threshold(struct cyclades_port * info, unsigned long value)
3992 info->default_threshold = value & 0x0f;
3994 }/* set_default_threshold */
3998 get_default_threshold(struct cyclades_port * info, unsigned long *value)
4000 return cy_put_user(info->default_threshold,value);
4001 }/* get_default_threshold */
4005 set_timeout(struct cyclades_port * info, unsigned long value)
4007 unsigned char *base_addr;
4008 int card,channel,chip,index;
4009 unsigned long flags;
4012 channel = info->line - cy_card[card].first_line;
4013 if (!IS_CYC_Z(cy_card[card])) {
4016 index = cy_card[card].bus_index;
4017 base_addr = (unsigned char*)
4018 (cy_card[card].base_addr
4019 + (cy_chip_offset[chip]<<index));
4021 CY_LOCK(info, flags);
4022 cy_writeb((u_long)base_addr+(CyRTPR<<index), value & 0xff);
4023 CY_UNLOCK(info, flags);
4032 get_timeout(struct cyclades_port * info, unsigned long *value)
4034 unsigned char *base_addr;
4035 int card,channel,chip,index;
4039 channel = info->line - cy_card[card].first_line;
4040 if (!IS_CYC_Z(cy_card[card])) {
4043 index = cy_card[card].bus_index;
4044 base_addr = (unsigned char*)
4045 (cy_card[card].base_addr
4046 + (cy_chip_offset[chip]<<index));
4048 tmp = cy_readb(base_addr+(CyRTPR<<index));
4049 return cy_put_user(tmp,value);
4058 set_default_timeout(struct cyclades_port * info, unsigned long value)
4060 info->default_timeout = value & 0xff;
4062 }/* set_default_timeout */
4066 get_default_timeout(struct cyclades_port * info, unsigned long *value)
4068 return cy_put_user(info->default_timeout,value);
4069 }/* get_default_timeout */
4072 * This routine allows the tty driver to implement device-
4073 * specific ioctl's. If the ioctl number passed in cmd is
4074 * not recognized by the driver, it should return ENOIOCTLCMD.
4077 cy_ioctl(struct tty_struct *tty, struct file * file,
4078 unsigned int cmd, unsigned long arg)
4080 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
4081 struct cyclades_icount cprev, cnow; /* kernel counter temps */
4082 struct serial_icounter_struct *p_cuser; /* user space */
4084 unsigned long flags;
4086 if (serial_paranoia_check(info, tty->name, "cy_ioctl"))
4089 #ifdef CY_DEBUG_OTHER
4090 printk("cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
4091 info->line, cmd, arg); /* */
4096 ret_val = get_mon_info(info, (struct cyclades_monitor *)arg);
4099 ret_val = get_threshold(info, (unsigned long *)arg);
4102 ret_val = set_threshold(info, (unsigned long)arg);
4104 case CYGETDEFTHRESH:
4105 ret_val = get_default_threshold(info, (unsigned long *)arg);
4107 case CYSETDEFTHRESH:
4108 ret_val = set_default_threshold(info, (unsigned long)arg);
4111 ret_val = get_timeout(info, (unsigned long *)arg);
4114 ret_val = set_timeout(info, (unsigned long)arg);
4116 case CYGETDEFTIMEOUT:
4117 ret_val = get_default_timeout(info, (unsigned long *)arg);
4119 case CYSETDEFTIMEOUT:
4120 ret_val = set_default_timeout(info, (unsigned long)arg);
4123 info->rflow = (int)arg;
4127 ret_val = info->rflow;
4129 case CYSETRTSDTR_INV:
4130 info->rtsdtr_inv = (int)arg;
4133 case CYGETRTSDTR_INV:
4134 ret_val = info->rtsdtr_inv;
4137 if (copy_to_user((void *)arg, (void *)&cy_card[info->card],
4138 sizeof (struct cyclades_card))) {
4144 case CYGETCD1400VER:
4145 ret_val = info->chip_rev;
4147 #ifndef CONFIG_CYZ_INTR
4148 case CYZSETPOLLCYCLE:
4149 cyz_polling_cycle = (arg * HZ) / 1000;
4152 case CYZGETPOLLCYCLE:
4153 ret_val = (cyz_polling_cycle * 1000) / HZ;
4155 #endif /* CONFIG_CYZ_INTR */
4157 info->closing_wait = (unsigned short)arg * HZ/100;
4161 ret_val = info->closing_wait / (HZ/100);
4164 ret_val = get_serial_info(info, (struct serial_struct *) arg);
4167 ret_val = set_serial_info(info, (struct serial_struct *) arg);
4169 case TIOCSERGETLSR: /* Get line status register */
4170 ret_val = get_lsr_info(info, (unsigned int *) arg);
4173 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
4174 * - mask passed in arg for lines of interest
4175 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
4176 * Caller should use TIOCGICOUNT to see which one it was
4179 CY_LOCK(info, flags);
4180 /* note the counters on entry */
4181 cprev = info->icount;
4182 CY_UNLOCK(info, flags);
4184 interruptible_sleep_on(&info->delta_msr_wait);
4185 /* see if a signal did it */
4186 if (signal_pending(current)) {
4187 return -ERESTARTSYS;
4190 CY_LOCK(info, flags);
4191 cnow = info->icount; /* atomic copy */
4192 CY_UNLOCK(info, flags);
4194 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
4195 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
4196 return -EIO; /* no change => error */
4198 if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
4199 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
4200 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
4201 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
4209 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
4210 * Return: write counters to the user passed counter struct
4211 * NB: both 1->0 and 0->1 transitions are counted except for
4212 * RI where only 0->1 is counted.
4215 CY_LOCK(info, flags);
4216 cnow = info->icount;
4217 CY_UNLOCK(info, flags);
4218 p_cuser = (struct serial_icounter_struct *) arg;
4219 ret_val = put_user(cnow.cts, &p_cuser->cts);
4220 if (ret_val) return ret_val;
4221 ret_val = put_user(cnow.dsr, &p_cuser->dsr);
4222 if (ret_val) return ret_val;
4223 ret_val = put_user(cnow.rng, &p_cuser->rng);
4224 if (ret_val) return ret_val;
4225 ret_val = put_user(cnow.dcd, &p_cuser->dcd);
4226 if (ret_val) return ret_val;
4227 ret_val = put_user(cnow.rx, &p_cuser->rx);
4228 if (ret_val) return ret_val;
4229 ret_val = put_user(cnow.tx, &p_cuser->tx);
4230 if (ret_val) return ret_val;
4231 ret_val = put_user(cnow.frame, &p_cuser->frame);
4232 if (ret_val) return ret_val;
4233 ret_val = put_user(cnow.overrun, &p_cuser->overrun);
4234 if (ret_val) return ret_val;
4235 ret_val = put_user(cnow.parity, &p_cuser->parity);
4236 if (ret_val) return ret_val;
4237 ret_val = put_user(cnow.brk, &p_cuser->brk);
4238 if (ret_val) return ret_val;
4239 ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
4240 if (ret_val) return ret_val;
4244 ret_val = -ENOIOCTLCMD;
4247 #ifdef CY_DEBUG_OTHER
4248 printk(" cyc:cy_ioctl done\n");
4256 * This routine allows the tty driver to be notified when
4257 * device's termios settings have changed. Note that a
4258 * well-designed tty driver should be prepared to accept the case
4259 * where old == NULL, and try to do something rational.
4262 cy_set_termios(struct tty_struct *tty, struct termios * old_termios)
4264 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4266 #ifdef CY_DEBUG_OTHER
4267 printk("cyc:cy_set_termios ttyC%d\n", info->line);
4270 if ((tty->termios->c_cflag == old_termios->c_cflag) &&
4271 ((tty->termios->c_iflag & (IXON|IXANY)) ==
4272 (old_termios->c_iflag & (IXON|IXANY))))
4274 set_line_char(info);
4276 if ((old_termios->c_cflag & CRTSCTS) &&
4277 !(tty->termios->c_cflag & CRTSCTS)) {
4278 tty->hw_stopped = 0;
4283 * No need to wake up processes in open wait, since they
4284 * sample the CLOCAL flag once, and don't recheck it.
4285 * XXX It's not clear whether the current behavior is correct
4286 * or not. Hence, this may change.....
4288 if (!(old_termios->c_cflag & CLOCAL) &&
4289 (tty->termios->c_cflag & CLOCAL))
4290 wake_up_interruptible(&info->open_wait);
4294 } /* cy_set_termios */
4296 /* This function is used to send a high-priority XON/XOFF character to
4300 cy_send_xchar (struct tty_struct *tty, char ch)
4302 struct cyclades_port *info = (struct cyclades_port *) tty->driver_data;
4305 if (serial_paranoia_check (info, tty->name, "cy_send_xchar"))
4314 channel = info->line - cy_card[card].first_line;
4316 if (IS_CYC_Z (cy_card[card])) {
4317 if (ch == STOP_CHAR (tty))
4318 cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXOFF, 0L);
4319 else if (ch == START_CHAR (tty))
4320 cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXON, 0L);
4324 /* This routine is called by the upper-layer tty layer to signal
4325 that incoming characters should be throttled because the input
4326 buffers are close to full.
4329 cy_throttle(struct tty_struct * tty)
4331 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4332 unsigned long flags;
4333 unsigned char *base_addr;
4334 int card,chip,channel,index;
4336 #ifdef CY_DEBUG_THROTTLE
4339 printk("cyc:throttle %s: %d....ttyC%d\n",
4341 tty->ldisc.chars_in_buffer(tty), info->line);
4344 if (serial_paranoia_check(info, tty->name, "cy_throttle")){
4351 if (!IS_CYC_Z (cy_card[card]))
4352 cy_send_xchar (tty, STOP_CHAR (tty));
4357 if (tty->termios->c_cflag & CRTSCTS) {
4358 channel = info->line - cy_card[card].first_line;
4359 if (!IS_CYC_Z(cy_card[card])) {
4362 index = cy_card[card].bus_index;
4363 base_addr = (unsigned char*)
4364 (cy_card[card].base_addr
4365 + (cy_chip_offset[chip]<<index));
4367 CY_LOCK(info, flags);
4368 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
4369 if (info->rtsdtr_inv) {
4370 cy_writeb((u_long)base_addr+(CyMSVR2<<index), ~CyDTR);
4372 cy_writeb((u_long)base_addr+(CyMSVR1<<index), ~CyRTS);
4374 CY_UNLOCK(info, flags);
4385 * This routine notifies the tty driver that it should signal
4386 * that characters can now be sent to the tty without fear of
4387 * overrunning the input buffers of the line disciplines.
4390 cy_unthrottle(struct tty_struct * tty)
4392 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4393 unsigned long flags;
4394 unsigned char *base_addr;
4395 int card,chip,channel,index;
4397 #ifdef CY_DEBUG_THROTTLE
4400 printk("cyc:unthrottle %s: %d....ttyC%d\n",
4402 tty->ldisc.chars_in_buffer(tty), info->line);
4405 if (serial_paranoia_check(info, tty->name, "cy_unthrottle")){
4413 cy_send_xchar (tty, START_CHAR (tty));
4416 if (tty->termios->c_cflag & CRTSCTS) {
4418 channel = info->line - cy_card[card].first_line;
4419 if (!IS_CYC_Z(cy_card[card])) {
4422 index = cy_card[card].bus_index;
4423 base_addr = (unsigned char*)
4424 (cy_card[card].base_addr
4425 + (cy_chip_offset[chip]<<index));
4427 CY_LOCK(info, flags);
4428 cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
4429 if (info->rtsdtr_inv) {
4430 cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
4432 cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
4434 CY_UNLOCK(info, flags);
4441 } /* cy_unthrottle */
4444 /* cy_start and cy_stop provide software output flow control as a
4445 function of XON/XOFF, software CTS, and other such stuff.
4448 cy_stop(struct tty_struct *tty)
4450 struct cyclades_card *cinfo;
4451 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4452 unsigned char *base_addr;
4453 int chip,channel,index;
4454 unsigned long flags;
4456 #ifdef CY_DEBUG_OTHER
4457 printk("cyc:cy_stop ttyC%d\n", info->line); /* */
4460 if (serial_paranoia_check(info, tty->name, "cy_stop"))
4463 cinfo = &cy_card[info->card];
4464 channel = info->line - cinfo->first_line;
4465 if (!IS_CYC_Z(*cinfo)) {
4466 index = cinfo->bus_index;
4469 base_addr = (unsigned char*)
4470 (cy_card[info->card].base_addr
4471 + (cy_chip_offset[chip]<<index));
4473 CY_LOCK(info, flags);
4474 cy_writeb((u_long)base_addr+(CyCAR<<index),
4475 (u_char)(channel & 0x0003)); /* index channel */
4476 cy_writeb((u_long)base_addr+(CySRER<<index),
4477 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
4478 CY_UNLOCK(info, flags);
4488 cy_start(struct tty_struct *tty)
4490 struct cyclades_card *cinfo;
4491 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4492 unsigned char *base_addr;
4493 int chip,channel,index;
4494 unsigned long flags;
4496 #ifdef CY_DEBUG_OTHER
4497 printk("cyc:cy_start ttyC%d\n", info->line); /* */
4500 if (serial_paranoia_check(info, tty->name, "cy_start"))
4503 cinfo = &cy_card[info->card];
4504 channel = info->line - cinfo->first_line;
4505 index = cinfo->bus_index;
4506 if (!IS_CYC_Z(*cinfo)) {
4509 base_addr = (unsigned char*)
4510 (cy_card[info->card].base_addr
4511 + (cy_chip_offset[chip]<<index));
4513 CY_LOCK(info, flags);
4514 cy_writeb((u_long)base_addr+(CyCAR<<index),
4515 (u_char)(channel & 0x0003)); /* index channel */
4516 cy_writeb((u_long)base_addr+(CySRER<<index),
4517 cy_readb(base_addr+(CySRER<<index)) | CyTxRdy);
4518 CY_UNLOCK(info, flags);
4528 cy_flush_buffer(struct tty_struct *tty)
4530 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4531 int card, channel, retval;
4532 unsigned long flags;
4535 printk("cyc:cy_flush_buffer ttyC%d\n", info->line); /* */
4538 if (serial_paranoia_check(info, tty->name, "cy_flush_buffer"))
4542 channel = (info->line) - (cy_card[card].first_line);
4544 CY_LOCK(info, flags);
4545 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
4546 CY_UNLOCK(info, flags);
4548 if (IS_CYC_Z(cy_card[card])) { /* If it is a Z card, flush the on-board
4550 CY_LOCK(info, flags);
4551 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_TX, 0L);
4553 printk("cyc: flush_buffer retval on ttyC%d was %x\n",
4554 info->line, retval);
4556 CY_UNLOCK(info, flags);
4558 wake_up_interruptible(&tty->write_wait);
4559 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
4560 && tty->ldisc.write_wakeup)
4561 (tty->ldisc.write_wakeup)(tty);
4562 } /* cy_flush_buffer */
4566 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
4569 cy_hangup(struct tty_struct *tty)
4571 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
4573 #ifdef CY_DEBUG_OTHER
4574 printk("cyc:cy_hangup ttyC%d\n", info->line); /* */
4577 if (serial_paranoia_check(info, tty->name, "cy_hangup"))
4580 cy_flush_buffer(tty);
4584 #ifdef CY_DEBUG_COUNT
4585 printk("cyc:cy_hangup (%d): setting count to 0\n", current->pid);
4588 info->flags &= ~ASYNC_NORMAL_ACTIVE;
4589 wake_up_interruptible(&info->open_wait);
4594 * ---------------------------------------------------------------------
4595 * cy_init() and friends
4597 * cy_init() is called at boot-time to initialize the serial driver.
4598 * ---------------------------------------------------------------------
4601 /* initialize chips on Cyclom-Y card -- return number of valid
4602 chips (which is number of ports/4) */
4603 static unsigned short __init
4604 cyy_init_card(volatile ucchar *true_base_addr,int index)
4606 unsigned int chip_number;
4607 volatile ucchar* base_addr;
4609 cy_writeb((u_long)true_base_addr+(Cy_HwReset<<index), 0);
4610 /* Cy_HwReset is 0x1400 */
4611 cy_writeb((u_long)true_base_addr+(Cy_ClrIntr<<index), 0);
4612 /* Cy_ClrIntr is 0x1800 */
4615 for(chip_number=0; chip_number<CyMAX_CHIPS_PER_CARD; chip_number++){
4616 base_addr = true_base_addr
4617 + (cy_chip_offset[chip_number]<<index);
4619 if(cy_readb(base_addr+(CyCCR<<index)) != 0x00){
4621 printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
4622 chip_number, (unsigned long)base_addr);
4627 cy_writeb((u_long)base_addr+(CyGFRCR<<index), 0);
4630 /* The Cyclom-16Y does not decode address bit 9 and therefore
4631 cannot distinguish between references to chip 0 and a non-
4632 existent chip 4. If the preceding clearing of the supposed
4633 chip 4 GFRCR register appears at chip 0, there is no chip 4
4634 and this must be a Cyclom-16Y, not a Cyclom-32Ye.
4636 if (chip_number == 4
4637 && cy_readb(true_base_addr
4638 + (cy_chip_offset[0]<<index)
4639 + (CyGFRCR<<index)) == 0){
4643 cy_writeb((u_long)base_addr+(CyCCR<<index), CyCHIP_RESET);
4646 if(cy_readb(base_addr+(CyGFRCR<<index)) == 0x00){
4648 printk(" chip #%d at %#6lx is not responding ",
4649 chip_number, (unsigned long)base_addr);
4650 printk("(GFRCR stayed 0)\n",
4654 if((0xf0 & (cy_readb(base_addr+(CyGFRCR<<index)))) != 0x40){
4656 printk(" chip #%d at %#6lx is not valid (GFRCR == %#2x)\n",
4657 chip_number, (unsigned long)base_addr,
4658 base_addr[CyGFRCR<<index]);
4662 cy_writeb((u_long)base_addr+(CyGCR<<index), CyCH0_SERIAL);
4663 if (cy_readb(base_addr+(CyGFRCR<<index)) >= CD1400_REV_J){
4664 /* It is a CD1400 rev. J or later */
4665 /* Impossible to reach 5ms with this chip.
4666 Changed to 2ms instead (f = 500 Hz). */
4667 cy_writeb((u_long)base_addr+(CyPPR<<index), CyCLOCK_60_2MS);
4670 cy_writeb((u_long)base_addr+(CyPPR<<index), CyCLOCK_25_5MS);
4674 printk(" chip #%d at %#6lx is rev 0x%2x\n",
4675 chip_number, (unsigned long)base_addr,
4676 cy_readb(base_addr+(CyGFRCR<<index)));
4680 } /* cyy_init_card */
4683 * ---------------------------------------------------------------------
4684 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
4685 * sets global variables and return the number of ISA boards found.
4686 * ---------------------------------------------------------------------
4692 unsigned short cy_isa_irq,nboard;
4693 volatile ucchar *cy_isa_address;
4694 unsigned short i,j,cy_isa_nchan;
4702 /* Check for module parameters */
4703 for(i = 0 ; i < NR_CARDS; i++) {
4704 if (maddr[i] || i) {
4706 cy_isa_addresses[i] = (ucchar *)maddr[i];
4713 /* scan the address table probing for Cyclom-Y/ISA boards */
4714 for (i = 0 ; i < NR_ISA_ADDRS ; i++) {
4715 cy_isa_address = cy_isa_addresses[i];
4716 if (cy_isa_address == 0x0000) {
4720 /* probe for CD1400... */
4721 #if !defined(__alpha__)
4722 cy_isa_address = ioremap((ulong)cy_isa_address, CyISA_Ywin);
4724 cy_isa_nchan = CyPORTS_PER_CHIP *
4725 cyy_init_card(cy_isa_address,0);
4726 if (cy_isa_nchan == 0) {
4731 if (isparam && irq[i])
4732 cy_isa_irq = irq[i];
4735 /* find out the board's irq by probing */
4736 cy_isa_irq = detect_isa_irq(cy_isa_address);
4737 if (cy_isa_irq == 0) {
4738 printk("Cyclom-Y/ISA found at 0x%lx ",
4739 (unsigned long) cy_isa_address);
4740 printk("but the IRQ could not be detected.\n");
4744 if((cy_next_channel+cy_isa_nchan) > NR_PORTS) {
4745 printk("Cyclom-Y/ISA found at 0x%lx ",
4746 (unsigned long) cy_isa_address);
4747 printk("but no more channels are available.\n");
4748 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
4751 /* fill the next cy_card structure available */
4752 for (j = 0 ; j < NR_CARDS ; j++) {
4753 if (cy_card[j].base_addr == 0) break;
4755 if (j == NR_CARDS) { /* no more cy_cards available */
4756 printk("Cyclom-Y/ISA found at 0x%lx ",
4757 (unsigned long) cy_isa_address);
4758 printk("but no more cards can be used .\n");
4759 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4764 if(request_irq(cy_isa_irq, cyy_interrupt,
4765 SA_INTERRUPT, "Cyclom-Y", &cy_card[j]))
4767 printk("Cyclom-Y/ISA found at 0x%lx ",
4768 (unsigned long) cy_isa_address);
4769 printk("but could not allocate IRQ#%d.\n",
4775 cy_card[j].base_addr = (u_long) cy_isa_address;
4776 cy_card[j].ctl_addr = 0;
4777 cy_card[j].irq = (int) cy_isa_irq;
4778 cy_card[j].bus_index = 0;
4779 cy_card[j].first_line = cy_next_channel;
4780 cy_card[j].num_chips = cy_isa_nchan/4;
4784 printk("Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d, ",
4785 j+1, (unsigned long) cy_isa_address,
4786 (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)),
4788 printk("%d channels starting from port %d.\n",
4789 cy_isa_nchan, cy_next_channel);
4790 cy_next_channel += cy_isa_nchan;
4795 #endif /* CONFIG_ISA */
4796 } /* cy_detect_isa */
4799 plx_init(uclong addr, uclong initctl)
4802 cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x40000000);
4804 cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x40000000);
4806 /* Reload Config. Registers from EEPROM */
4807 cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x20000000);
4809 cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x20000000);
4813 * ---------------------------------------------------------------------
4814 * cy_detect_pci() - Test PCI bus presence and Cyclom-Ye/PCI.
4815 * sets global variables and return the number of PCI boards found.
4816 * ---------------------------------------------------------------------
4823 struct pci_dev *pdev = NULL;
4824 unsigned char cyy_rev_id;
4825 unsigned char cy_pci_irq = 0;
4826 uclong cy_pci_phys0, cy_pci_phys2;
4827 uclong cy_pci_addr0, cy_pci_addr2;
4828 unsigned short i,j,cy_pci_nchan, plx_ver;
4829 unsigned short device_id,dev_index = 0;
4831 uclong Ze_addr0[NR_CARDS], Ze_addr2[NR_CARDS], ZeIndex = 0;
4832 uclong Ze_phys0[NR_CARDS], Ze_phys2[NR_CARDS];
4833 unsigned char Ze_irq[NR_CARDS];
4834 struct pci_dev *Ze_pdev[NR_CARDS];
4836 for (i = 0; i < NR_CARDS; i++) {
4837 /* look for a Cyclades card by vendor and device id */
4838 while((device_id = cy_pci_dev_id[dev_index]) != 0) {
4839 if((pdev = pci_find_device(PCI_VENDOR_ID_CYCLADES,
4840 device_id, pdev)) == NULL) {
4841 dev_index++; /* try next device id */
4843 break; /* found a board */
4850 if (pci_enable_device(pdev))
4853 /* read PCI configuration area */
4854 cy_pci_irq = pdev->irq;
4855 cy_pci_phys0 = pci_resource_start(pdev, 0);
4856 cy_pci_phys2 = pci_resource_start(pdev, 2);
4857 pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id);
4859 device_id &= ~PCI_DEVICE_ID_MASK;
4861 if ((device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo)
4862 || (device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi)){
4864 printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ",
4865 pdev->bus->number, pdev->devfn);
4866 printk("rev_id=%d) IRQ%d\n",
4867 cyy_rev_id, (int)cy_pci_irq);
4868 printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n",
4869 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4872 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
4873 printk(" Warning: PCI I/O bit incorrectly set. "
4874 "Ignoring it...\n");
4875 pdev->resource[2].flags &= ~IORESOURCE_IO;
4878 /* Although we don't use this I/O region, we should
4879 request it from the kernel anyway, to avoid problems
4880 with other drivers accessing it. */
4881 if (pci_request_regions(pdev, "Cyclom-Y") != 0) {
4882 printk(KERN_ERR "cyclades: failed to reserve PCI resources\n");
4886 #if defined(__alpha__)
4887 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
4888 printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ",
4889 pdev->bus->number, pdev->devfn);
4890 printk("rev_id=%d) IRQ%d\n",
4891 cyy_rev_id, (int)cy_pci_irq);
4892 printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n",
4893 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4894 printk("Cyclom-Y/PCI not supported for low addresses in "
4895 "Alpha systems.\n");
4900 cy_pci_addr0 = (ulong)ioremap(cy_pci_phys0, CyPCI_Yctl);
4901 cy_pci_addr2 = (ulong)ioremap(cy_pci_phys2, CyPCI_Ywin);
4904 printk("Cyclom-Y/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
4905 (u_long)cy_pci_addr2, (u_long)cy_pci_addr0);
4907 cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP *
4908 cyy_init_card((volatile ucchar *)cy_pci_addr2, 1));
4909 if(cy_pci_nchan == 0) {
4910 printk("Cyclom-Y PCI host card with ");
4911 printk("no Serial-Modules at 0x%lx.\n",
4912 (ulong) cy_pci_phys2);
4916 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
4917 printk("Cyclom-Y/PCI found at 0x%lx ",
4918 (ulong) cy_pci_phys2);
4919 printk("but no channels are available.\n");
4920 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
4923 /* fill the next cy_card structure available */
4924 for (j = 0 ; j < NR_CARDS ; j++) {
4925 if (cy_card[j].base_addr == 0) break;
4927 if (j == NR_CARDS) { /* no more cy_cards available */
4928 printk("Cyclom-Y/PCI found at 0x%lx ",
4929 (ulong) cy_pci_phys2);
4930 printk("but no more cards can be used.\n");
4931 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4936 if(request_irq(cy_pci_irq, cyy_interrupt,
4937 SA_SHIRQ, "Cyclom-Y", &cy_card[j]))
4939 printk("Cyclom-Y/PCI found at 0x%lx ",
4940 (ulong) cy_pci_phys2);
4941 printk("but could not allocate IRQ%d.\n",
4947 cy_card[j].base_phys = (ulong)cy_pci_phys2;
4948 cy_card[j].ctl_phys = (ulong)cy_pci_phys0;
4949 cy_card[j].base_addr = (ulong)cy_pci_addr2;
4950 cy_card[j].ctl_addr = (ulong)cy_pci_addr0;
4951 cy_card[j].irq = (int) cy_pci_irq;
4952 cy_card[j].bus_index = 1;
4953 cy_card[j].first_line = cy_next_channel;
4954 cy_card[j].num_chips = cy_pci_nchan/4;
4955 cy_card[j].pdev = pdev;
4957 /* enable interrupts in the PCI interface */
4958 plx_ver = cy_readb(cy_pci_addr2 + CyPLX_VER) & 0x0f;
4962 cy_writeb(cy_pci_addr0+0x4c, 0x43);
4967 default: /* Old boards, use PLX_9060 */
4969 plx_init(cy_pci_addr0, 0x6c);
4970 /* For some yet unknown reason, once the PLX9060 reloads
4971 the EEPROM, the IRQ is lost and, thus, we have to
4972 re-write it to the PCI config. registers.
4973 This will remain here until we find a permanent fix. */
4974 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq);
4976 cy_writew(cy_pci_addr0+0x68,
4977 cy_readw(cy_pci_addr0+0x68)|0x0900);
4982 printk("Cyclom-Y/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
4984 (ulong)cy_pci_phys2,
4985 (ulong)(cy_pci_phys2 + CyPCI_Ywin - 1),
4987 printk("%d channels starting from port %d.\n",
4988 cy_pci_nchan, cy_next_channel);
4990 cy_next_channel += cy_pci_nchan;
4991 }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo){
4993 printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ",
4994 pdev->bus->number, pdev->devfn);
4995 printk("rev_id=%d) IRQ%d\n",
4996 cyy_rev_id, (int)cy_pci_irq);
4997 printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n",
4998 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4999 printk("Cyclades-Z/PCI not supported for low addresses\n");
5001 }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi){
5003 printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ",
5004 pdev->bus->number, pdev->devfn);
5005 printk("rev_id=%d) IRQ%d\n",
5006 cyy_rev_id, (int)cy_pci_irq);
5007 printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n",
5008 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
5010 cy_pci_addr0 = (ulong)ioremap(cy_pci_phys0, CyPCI_Zctl);
5012 /* Disable interrupts on the PLX before resetting it */
5013 cy_writew(cy_pci_addr0+0x68,
5014 cy_readw(cy_pci_addr0+0x68) & ~0x0900);
5016 plx_init(cy_pci_addr0, 0x6c);
5017 /* For some yet unknown reason, once the PLX9060 reloads
5018 the EEPROM, the IRQ is lost and, thus, we have to
5019 re-write it to the PCI config. registers.
5020 This will remain here until we find a permanent fix. */
5021 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq);
5023 mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 *)
5024 cy_pci_addr0)->mail_box_0);
5026 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
5027 printk(" Warning: PCI I/O bit incorrectly set. "
5028 "Ignoring it...\n");
5029 pdev->resource[2].flags &= ~IORESOURCE_IO;
5032 /* Although we don't use this I/O region, we should
5033 request it from the kernel anyway, to avoid problems
5034 with other drivers accessing it. */
5035 if (pci_request_regions(pdev, "Cyclades-Z") != 0) {
5036 printk(KERN_ERR "cyclades: failed to reserve PCI resources\n");
5040 if (mailbox == ZE_V1) {
5041 cy_pci_addr2 = (ulong)ioremap(cy_pci_phys2, CyPCI_Ze_win);
5042 if (ZeIndex == NR_CARDS) {
5043 printk("Cyclades-Ze/PCI found at 0x%lx ",
5044 (ulong)cy_pci_phys2);
5045 printk("but no more cards can be used.\n");
5046 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5048 Ze_phys0[ZeIndex] = cy_pci_phys0;
5049 Ze_phys2[ZeIndex] = cy_pci_phys2;
5050 Ze_addr0[ZeIndex] = cy_pci_addr0;
5051 Ze_addr2[ZeIndex] = cy_pci_addr2;
5052 Ze_irq[ZeIndex] = cy_pci_irq;
5053 Ze_pdev[ZeIndex] = pdev;
5059 cy_pci_addr2 = (ulong)ioremap(cy_pci_phys2, CyPCI_Zwin);
5063 printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
5064 (ulong)cy_pci_addr2, (ulong)cy_pci_addr0);
5065 if (mailbox == ZO_V1) {
5066 cy_writel(&((struct RUNTIME_9060 *)
5067 (cy_pci_addr0))->loc_addr_base, WIN_CREG);
5069 printk("Cyclades-8Zo/PCI: FPGA id %lx, ver %lx\n",
5070 (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *)
5071 (cy_pci_addr2))->fpga_id)),
5072 (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *)
5073 (cy_pci_addr2))->fpga_version)));
5074 cy_writel(&((struct RUNTIME_9060 *)
5075 (cy_pci_addr0))->loc_addr_base, WIN_RAM);
5077 printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n");
5080 /* The following clears the firmware id word. This ensures
5081 that the driver will not attempt to talk to the board
5082 until it has been properly initialized.
5085 if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
5086 cy_writel((ulong)(cy_pci_addr2+ID_ADDRESS), 0L);
5088 /* This must be a Cyclades-8Zo/PCI. The extendable
5089 version will have a different device_id and will
5090 be allocated its maximum number of ports. */
5093 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
5094 printk("Cyclades-8Zo/PCI found at 0x%lx ",
5095 (ulong)cy_pci_phys2);
5096 printk("but no channels are available.\n");
5097 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
5101 /* fill the next cy_card structure available */
5102 for (j = 0 ; j < NR_CARDS ; j++) {
5103 if (cy_card[j].base_addr == 0) break;
5105 if (j == NR_CARDS) { /* no more cy_cards available */
5106 printk("Cyclades-8Zo/PCI found at 0x%lx ",
5107 (ulong)cy_pci_phys2);
5108 printk("but no more cards can be used.\n");
5109 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5113 #ifdef CONFIG_CYZ_INTR
5114 /* allocate IRQ only if board has an IRQ */
5115 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
5116 if(request_irq(cy_pci_irq, cyz_interrupt,
5117 SA_SHIRQ, "Cyclades-Z", &cy_card[j]))
5119 printk("Cyclom-8Zo/PCI found at 0x%lx ",
5120 (ulong) cy_pci_phys2);
5121 printk("but could not allocate IRQ%d.\n",
5126 #endif /* CONFIG_CYZ_INTR */
5130 cy_card[j].base_phys = cy_pci_phys2;
5131 cy_card[j].ctl_phys = cy_pci_phys0;
5132 cy_card[j].base_addr = cy_pci_addr2;
5133 cy_card[j].ctl_addr = cy_pci_addr0;
5134 cy_card[j].irq = (int) cy_pci_irq;
5135 cy_card[j].bus_index = 1;
5136 cy_card[j].first_line = cy_next_channel;
5137 cy_card[j].num_chips = -1;
5138 cy_card[j].pdev = pdev;
5141 #ifdef CONFIG_CYZ_INTR
5142 /* don't report IRQ if board is no IRQ */
5143 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) )
5144 printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
5145 j+1,(ulong)cy_pci_phys2,
5146 (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1),
5149 #endif /* CONFIG_CYZ_INTR */
5150 printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, ",
5151 j+1,(ulong)cy_pci_phys2,
5152 (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1));
5154 printk("%d channels starting from port %d.\n",
5155 cy_pci_nchan,cy_next_channel);
5156 cy_next_channel += cy_pci_nchan;
5160 for (; ZeIndex != 0 && i < NR_CARDS; i++) {
5161 cy_pci_phys0 = Ze_phys0[0];
5162 cy_pci_phys2 = Ze_phys2[0];
5163 cy_pci_addr0 = Ze_addr0[0];
5164 cy_pci_addr2 = Ze_addr2[0];
5165 cy_pci_irq = Ze_irq[0];
5167 for (j = 0 ; j < ZeIndex-1 ; j++) {
5168 Ze_phys0[j] = Ze_phys0[j+1];
5169 Ze_phys2[j] = Ze_phys2[j+1];
5170 Ze_addr0[j] = Ze_addr0[j+1];
5171 Ze_addr2[j] = Ze_addr2[j+1];
5172 Ze_irq[j] = Ze_irq[j+1];
5173 Ze_pdev[j] = Ze_pdev[j+1];
5176 mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 *)
5177 cy_pci_addr0)->mail_box_0);
5179 printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
5180 (ulong)cy_pci_addr2, (ulong)cy_pci_addr0);
5181 printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n");
5184 /* This must be the new Cyclades-Ze/PCI. */
5185 cy_pci_nchan = ZE_V1_NPORTS;
5187 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
5188 printk("Cyclades-Ze/PCI found at 0x%lx ",
5189 (ulong)cy_pci_phys2);
5190 printk("but no channels are available.\n");
5191 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
5195 /* fill the next cy_card structure available */
5196 for (j = 0 ; j < NR_CARDS ; j++) {
5197 if (cy_card[j].base_addr == 0) break;
5199 if (j == NR_CARDS) { /* no more cy_cards available */
5200 printk("Cyclades-Ze/PCI found at 0x%lx ",
5201 (ulong)cy_pci_phys2);
5202 printk("but no more cards can be used.\n");
5203 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5207 #ifdef CONFIG_CYZ_INTR
5208 /* allocate IRQ only if board has an IRQ */
5209 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
5210 if(request_irq(cy_pci_irq, cyz_interrupt,
5211 SA_SHIRQ, "Cyclades-Z", &cy_card[j]))
5213 printk("Cyclom-Ze/PCI found at 0x%lx ",
5214 (ulong) cy_pci_phys2);
5215 printk("but could not allocate IRQ%d.\n",
5220 #endif /* CONFIG_CYZ_INTR */
5223 cy_card[j].base_phys = cy_pci_phys2;
5224 cy_card[j].ctl_phys = cy_pci_phys0;
5225 cy_card[j].base_addr = cy_pci_addr2;
5226 cy_card[j].ctl_addr = cy_pci_addr0;
5227 cy_card[j].irq = (int) cy_pci_irq;
5228 cy_card[j].bus_index = 1;
5229 cy_card[j].first_line = cy_next_channel;
5230 cy_card[j].num_chips = -1;
5231 cy_card[j].pdev = pdev;
5234 #ifdef CONFIG_CYZ_INTR
5235 /* don't report IRQ if board is no IRQ */
5236 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) )
5237 printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
5238 j+1,(ulong)cy_pci_phys2,
5239 (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1),
5242 #endif /* CONFIG_CYZ_INTR */
5243 printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, ",
5244 j+1,(ulong)cy_pci_phys2,
5245 (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1));
5247 printk("%d channels starting from port %d.\n",
5248 cy_pci_nchan,cy_next_channel);
5249 cy_next_channel += cy_pci_nchan;
5252 printk("Cyclades-Ze/PCI found at 0x%x ",
5253 (unsigned int) Ze_phys2[0]);
5254 printk("but no more cards can be used.\n");
5255 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5260 #endif /* ifdef CONFIG_PCI */
5261 } /* cy_detect_pci */
5265 * This routine prints out the appropriate serial driver version number
5266 * and identifies which options were configured into this driver.
5271 char *rcsvers, *rcsdate, *tmp;
5272 rcsvers = strchr(rcsid, ' '); rcsvers++;
5273 tmp = strchr(rcsvers, ' '); *tmp++ = '\0';
5274 rcsdate = strchr(tmp, ' '); rcsdate++;
5275 tmp = strrchr(rcsdate, ' '); *tmp = '\0';
5276 printk("Cyclades driver %s %s\n",
5278 printk(" built %s %s\n",
5279 __DATE__, __TIME__);
5280 } /* show_version */
5283 cyclades_get_proc_info(char *buf, char **start, off_t offset, int length,
5284 int *eof, void *data)
5286 struct cyclades_port *info;
5292 __u32 cur_jifs = jiffies;
5294 size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn IdleIn Overruns Ldisc\n");
5299 /* Output one line for each known port */
5300 for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) {
5304 size = sprintf(buf+len,
5305 "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n",
5307 JIFFIES_DIFF(info->idle_stats.in_use, cur_jifs) / HZ,
5308 info->idle_stats.xmit_bytes,
5309 JIFFIES_DIFF(info->idle_stats.xmit_idle, cur_jifs) / HZ,
5310 info->idle_stats.recv_bytes,
5311 JIFFIES_DIFF(info->idle_stats.recv_idle, cur_jifs) / HZ,
5312 info->idle_stats.overruns,
5313 (long) info->tty->ldisc.num);
5315 size = sprintf(buf+len,
5316 "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n",
5317 info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
5325 if (pos > offset + length)
5330 *start = buf + (offset - begin); /* Start of wanted data */
5331 len -= (offset - begin); /* Start slop */
5333 len = length; /* Ending slop */
5339 /* The serial driver boot-time initialization code!
5340 Hardware I/O ports are mapped to character special devices on a
5341 first found, first allocated manner. That is, this code searches
5342 for Cyclom cards in the system. As each is found, it is probed
5343 to discover how many chips (and thus how many ports) are present.
5344 These ports are mapped to the tty ports 32 and upward in monotonic
5345 fashion. If an 8-port card is replaced with a 16-port card, the
5346 port mapping on a following card will shift.
5348 This approach is different from what is used in the other serial
5349 device driver because the Cyclom is more properly a multiplexer,
5350 not just an aggregation of serial ports on one card.
5352 If there are more cards with more ports than have been
5353 statically allocated above, a warning is printed and the
5354 extra ports are ignored.
5357 static struct tty_operations cy_ops = {
5361 .put_char = cy_put_char,
5362 .flush_chars = cy_flush_chars,
5363 .write_room = cy_write_room,
5364 .chars_in_buffer = cy_chars_in_buffer,
5365 .flush_buffer = cy_flush_buffer,
5367 .throttle = cy_throttle,
5368 .unthrottle = cy_unthrottle,
5369 .set_termios = cy_set_termios,
5372 .hangup = cy_hangup,
5373 .break_ctl = cy_break,
5374 .wait_until_sent = cy_wait_until_sent,
5375 .read_proc = cyclades_get_proc_info,
5376 .tiocmget = cy_tiocmget,
5377 .tiocmset = cy_tiocmset,
5383 struct cyclades_port *info;
5384 struct cyclades_card *cinfo;
5385 int number_z_boards = 0;
5386 int board,port,i,index;
5387 unsigned long mailbox;
5388 unsigned short chip_number;
5391 cy_serial_driver = alloc_tty_driver(NR_PORTS);
5392 if (!cy_serial_driver)
5396 /* Initialize the tty_driver structure */
5398 cy_serial_driver->owner = THIS_MODULE;
5399 cy_serial_driver->driver_name = "cyclades";
5400 cy_serial_driver->name = "ttyC";
5401 cy_serial_driver->devfs_name = "tts/C";
5402 cy_serial_driver->major = CYCLADES_MAJOR;
5403 cy_serial_driver->minor_start = 0;
5404 cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
5405 cy_serial_driver->subtype = SERIAL_TYPE_NORMAL;
5406 cy_serial_driver->init_termios = tty_std_termios;
5407 cy_serial_driver->init_termios.c_cflag =
5408 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
5409 cy_serial_driver->flags = TTY_DRIVER_REAL_RAW;
5410 tty_set_operations(cy_serial_driver, &cy_ops);
5412 if (tty_register_driver(cy_serial_driver))
5413 panic("Couldn't register Cyclades serial driver\n");
5415 for (i = 0; i < NR_CARDS; i++) {
5416 /* base_addr=0 indicates board not found */
5417 cy_card[i].base_addr = 0;
5420 /* the code below is responsible to find the boards. Each different
5421 type of board has its own detection routine. If a board is found,
5422 the next cy_card structure available is set by the detection
5423 routine. These functions are responsible for checking the
5424 availability of cy_card and cy_port data structures and updating
5425 the cy_next_channel. */
5427 /* look for isa boards */
5428 cy_isa_nboard = cy_detect_isa();
5430 /* look for pci boards */
5431 cy_pci_nboard = cy_detect_pci();
5433 cy_nboard = cy_isa_nboard + cy_pci_nboard;
5435 /* invalidate remaining cy_card structures */
5436 for (i = 0 ; i < NR_CARDS ; i++) {
5437 if (cy_card[i].base_addr == 0) {
5438 cy_card[i].first_line = -1;
5439 cy_card[i].ctl_addr = 0;
5441 cy_card[i].bus_index = 0;
5442 cy_card[i].first_line = 0;
5443 cy_card[i].num_chips = 0;
5446 /* invalidate remaining cy_port structures */
5447 for (i = cy_next_channel ; i < NR_PORTS ; i++) {
5448 cy_port[i].line = -1;
5449 cy_port[i].magic = -1;
5452 /* initialize per-port data structures for each valid board found */
5453 for (board = 0 ; board < cy_nboard ; board++) {
5454 cinfo = &cy_card[board];
5455 if (cinfo->num_chips == -1) { /* Cyclades-Z */
5457 mailbox = cy_readl(&((struct RUNTIME_9060 *)
5458 cy_card[board].ctl_addr)->mail_box_0);
5459 nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8;
5460 cinfo->intr_enabled = 0;
5461 cinfo->nports = 0; /* Will be correctly set later, after
5463 spin_lock_init(&cinfo->card_lock);
5464 for (port = cinfo->first_line ;
5465 port < cinfo->first_line + nports;
5468 info = &cy_port[port];
5469 info->magic = CYCLADES_MAGIC;
5470 info->type = PORT_STARTECH;
5474 info->flags = STD_COM_FLAGS;
5476 if (mailbox == ZO_V1)
5477 info->xmit_fifo_size = CYZ_FIFO_SIZE;
5479 info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
5489 info->custom_divisor = 0;
5490 info->close_delay = 5*HZ/10;
5491 info->closing_wait = CLOSING_WAIT_DELAY;
5492 info->icount.cts = info->icount.dsr =
5493 info->icount.rng = info->icount.dcd = 0;
5494 info->icount.rx = info->icount.tx = 0;
5495 info->icount.frame = info->icount.parity = 0;
5496 info->icount.overrun = info->icount.brk = 0;
5500 info->blocked_open = 0;
5501 info->default_threshold = 0;
5502 info->default_timeout = 0;
5503 INIT_WORK(&info->tqueue, do_softint, info);
5504 init_waitqueue_head(&info->open_wait);
5505 init_waitqueue_head(&info->close_wait);
5506 init_waitqueue_head(&info->shutdown_wait);
5507 init_waitqueue_head(&info->delta_msr_wait);
5510 info->read_status_mask = 0;
5512 /* Bentson's vars */
5513 info->jiffies[0] = 0;
5514 info->jiffies[1] = 0;
5515 info->jiffies[2] = 0;
5516 info->rflush_count = 0;
5517 #ifdef CONFIG_CYZ_INTR
5518 init_timer(&cyz_rx_full_timer[port]);
5519 cyz_rx_full_timer[port].function = NULL;
5523 }else{ /* Cyclom-Y of some kind*/
5524 index = cinfo->bus_index;
5525 spin_lock_init(&cinfo->card_lock);
5526 cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips;
5527 for (port = cinfo->first_line ;
5528 port < cinfo->first_line + cinfo->nports ;
5531 info = &cy_port[port];
5532 info->magic = CYCLADES_MAGIC;
5533 info->type = PORT_CIRRUS;
5536 info->flags = STD_COM_FLAGS;
5538 info->xmit_fifo_size = CyMAX_CHAR_FIFO;
5539 info->cor1 = CyPARITY_NONE|Cy_1_STOP|Cy_8_BITS;
5541 info->cor3 = 0x08; /* _very_ small rcv threshold */
5544 info->custom_divisor = 0;
5545 info->close_delay = 5*HZ/10;
5546 info->closing_wait = CLOSING_WAIT_DELAY;
5547 info->icount.cts = info->icount.dsr =
5548 info->icount.rng = info->icount.dcd = 0;
5549 info->icount.rx = info->icount.tx = 0;
5550 info->icount.frame = info->icount.parity = 0;
5551 info->icount.overrun = info->icount.brk = 0;
5552 chip_number = (port - cinfo->first_line) / 4;
5553 if ((info->chip_rev =
5554 cy_readb(cinfo->base_addr +
5555 (cy_chip_offset[chip_number]<<index) +
5556 (CyGFRCR<<index))) >= CD1400_REV_J) {
5557 /* It is a CD1400 rev. J or later */
5558 info->tbpr = baud_bpr_60[13]; /* Tx BPR */
5559 info->tco = baud_co_60[13]; /* Tx CO */
5560 info->rbpr = baud_bpr_60[13]; /* Rx BPR */
5561 info->rco = baud_co_60[13]; /* Rx CO */
5563 info->rtsdtr_inv = 1;
5565 info->tbpr = baud_bpr_25[13]; /* Tx BPR */
5566 info->tco = baud_co_25[13]; /* Tx CO */
5567 info->rbpr = baud_bpr_25[13]; /* Rx BPR */
5568 info->rco = baud_co_25[13]; /* Rx CO */
5570 info->rtsdtr_inv = 0;
5575 info->blocked_open = 0;
5576 info->default_threshold = 0;
5577 info->default_timeout = 0;
5578 INIT_WORK(&info->tqueue, do_softint, info);
5579 init_waitqueue_head(&info->open_wait);
5580 init_waitqueue_head(&info->close_wait);
5581 init_waitqueue_head(&info->shutdown_wait);
5582 init_waitqueue_head(&info->delta_msr_wait);
5585 info->read_status_mask =
5586 CyTIMEOUT| CySPECHAR| CyBREAK
5587 | CyPARITY| CyFRAME| CyOVERRUN;
5593 #ifndef CONFIG_CYZ_INTR
5594 if (number_z_boards && !cyz_timeron){
5596 cyz_timerlist.expires = jiffies + 1;
5597 add_timer(&cyz_timerlist);
5599 printk("Cyclades-Z polling initialized\n");
5602 #endif /* CONFIG_CYZ_INTR */
5609 cy_cleanup_module(void)
5613 #ifndef CONFIG_CYZ_INTR
5616 del_timer(&cyz_timerlist);
5618 #endif /* CONFIG_CYZ_INTR */
5620 if ((e1 = tty_unregister_driver(cy_serial_driver)))
5621 printk("cyc: failed to unregister Cyclades serial driver(%d)\n",
5624 put_tty_driver(cy_serial_driver);
5626 for (i = 0; i < NR_CARDS; i++) {
5627 if (cy_card[i].base_addr != 0) {
5628 iounmap((void *)cy_card[i].base_addr);
5629 if (cy_card[i].ctl_addr != 0)
5630 iounmap((void *)cy_card[i].ctl_addr);
5632 #ifndef CONFIG_CYZ_INTR
5633 && cy_card[i].num_chips != -1 /* not a Z card */
5634 #endif /* CONFIG_CYZ_INTR */
5636 free_irq(cy_card[i].irq, &cy_card[i]);
5638 if (cy_card[i].pdev)
5639 pci_release_regions(cy_card[i].pdev);
5644 free_page((unsigned long) tmp_buf);
5647 } /* cy_cleanup_module */
5649 module_init(cy_init);
5650 module_exit(cy_cleanup_module);
5653 /* called by linux/init/main.c to parse command line options */
5655 cy_setup(char *str, int *ints)
5660 for (i = 0 ; i < NR_ISA_ADDRS ; i++) {
5661 if (cy_isa_addresses[i] == 0) break;
5663 for (j = 1; j <= ints[0]; j++){
5664 if ( i < NR_ISA_ADDRS ){
5665 cy_isa_addresses[i++] = (unsigned char *)(ints[j]);
5668 #endif /* CONFIG_ISA */
5672 MODULE_LICENSE("GPL");