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 explicitly
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/module.h>
637 #include <linux/errno.h>
638 #include <linux/signal.h>
639 #include <linux/sched.h>
640 #include <linux/timer.h>
641 #include <linux/interrupt.h>
642 #include <linux/tty.h>
643 #include <linux/tty_flip.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>
655 #include <linux/bitops.h>
657 #include <asm/system.h>
660 #include <asm/uaccess.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 static void cy_throttle (struct tty_struct *tty);
680 static void cy_send_xchar (struct tty_struct *tty, char ch);
682 #define IS_CYC_Z(card) ((card).num_chips == -1)
684 #define Z_FPGA_CHECK(card) \
685 ((cy_readl(&((struct RUNTIME_9060 __iomem *) \
686 ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0)
688 #define ISZLOADED(card) (((ZO_V1==cy_readl(&((struct RUNTIME_9060 __iomem *) \
689 ((card).ctl_addr))->mail_box_0)) || \
690 Z_FPGA_CHECK(card)) && \
691 (ZFIRM_ID==cy_readl(&((struct FIRM_ID __iomem *) \
692 ((card).base_addr+ID_ADDRESS))->signature)))
694 #ifndef SERIAL_XMIT_SIZE
695 #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096))
697 #define WAKEUP_CHARS 256
699 #define STD_COM_FLAGS (0)
701 #define JIFFIES_DIFF(n, j) ((j) - (n))
703 static struct tty_driver *cy_serial_driver;
706 /* This is the address lookup table. The driver will probe for
707 Cyclom-Y/ISA boards at all addresses in here. If you want the
708 driver to probe addresses at a different address, add it to
709 this table. If the driver is probing some other board and
710 causing problems, remove the offending address from this table.
711 The cy_setup function extracts additional addresses from the
712 boot options line. The form is "cyclades=address,address..."
715 static unsigned int cy_isa_addresses[] = {
726 #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)
729 static long maddr[NR_CARDS] = { 0, };
730 static int irq[NR_CARDS] = { 0, };
732 module_param_array(maddr, long, NULL, 0);
733 module_param_array(irq, int, NULL, 0);
736 #endif /* CONFIG_ISA */
738 /* This is the per-card data structure containing address, irq, number of
739 channels, etc. This driver supports a maximum of NR_CARDS cards.
741 static struct cyclades_card cy_card[NR_CARDS];
743 /* This is the per-channel data structure containing pointers, flags
744 and variables for the port. This driver supports a maximum of NR_PORTS.
746 static struct cyclades_port cy_port[NR_PORTS];
748 static int cy_next_channel; /* next minor available */
751 * This is used to look up the divisor speeds and the timeouts
752 * We're normally limited to 15 distinct baud rates. The extra
753 * are accessed via settings in info->flags.
754 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
755 * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
759 static int baud_table[] = {
760 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
761 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800,115200,150000,
764 static char baud_co_25[] = { /* 25 MHz clock option table */
765 /* value => 00 01 02 03 04 */
766 /* divide by 8 32 128 512 2048 */
767 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
768 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
770 static char baud_bpr_25[] = { /* 25 MHz baud rate period table */
771 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
772 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15};
774 static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
775 /* value => 00 01 02 03 04 */
776 /* divide by 8 32 128 512 2048 */
777 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
778 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
781 static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */
782 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
783 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
786 static char baud_cor3[] = { /* receive threshold */
787 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
788 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
792 * The Cyclades driver implements HW flow control as any serial driver.
793 * The cyclades_port structure member rflow and the vector rflow_thr
794 * allows us to take advantage of a special feature in the CD1400 to avoid
795 * data loss even when the system interrupt latency is too high. These flags
796 * are to be used only with very special applications. Setting these flags
797 * requires the use of a special cable (DTR and RTS reversed). In the new
798 * CD1400-based boards (rev. 6.00 or later), there is no need for special
802 static char rflow_thr[] = { /* rflow threshold */
803 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
804 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
807 /* The Cyclom-Ye has placed the sequential chips in non-sequential
808 * address order. This look-up table overcomes that problem.
810 static int cy_chip_offset [] =
821 /* PCI related definitions */
823 static unsigned short cy_pci_nboard;
824 static unsigned short cy_isa_nboard;
825 static unsigned short cy_nboard;
827 static unsigned short cy_pci_dev_id[] = {
828 PCI_DEVICE_ID_CYCLOM_Y_Lo, /* PCI < 1Mb */
829 PCI_DEVICE_ID_CYCLOM_Y_Hi, /* PCI > 1Mb */
830 PCI_DEVICE_ID_CYCLOM_4Y_Lo, /* 4Y PCI < 1Mb */
831 PCI_DEVICE_ID_CYCLOM_4Y_Hi, /* 4Y PCI > 1Mb */
832 PCI_DEVICE_ID_CYCLOM_8Y_Lo, /* 8Y PCI < 1Mb */
833 PCI_DEVICE_ID_CYCLOM_8Y_Hi, /* 8Y PCI > 1Mb */
834 PCI_DEVICE_ID_CYCLOM_Z_Lo, /* Z PCI < 1Mb */
835 PCI_DEVICE_ID_CYCLOM_Z_Hi, /* Z PCI > 1Mb */
840 static void cy_start(struct tty_struct *);
841 static void set_line_char(struct cyclades_port *);
842 static int cyz_issue_cmd(struct cyclades_card *, uclong, ucchar, uclong);
844 static unsigned detect_isa_irq(void __iomem *);
845 #endif /* CONFIG_ISA */
847 static int cyclades_get_proc_info(char *, char **, off_t , int , int *, void *);
849 #ifndef CONFIG_CYZ_INTR
850 static void cyz_poll(unsigned long);
852 /* The Cyclades-Z polling cycle is defined by this variable */
853 static long cyz_polling_cycle = CZ_DEF_POLL;
855 static int cyz_timeron = 0;
856 static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0);
858 #else /* CONFIG_CYZ_INTR */
859 static void cyz_rx_restart(unsigned long);
860 static struct timer_list cyz_rx_full_timer[NR_PORTS];
861 #endif /* CONFIG_CYZ_INTR */
864 serial_paranoia_check(struct cyclades_port *info,
865 char *name, const char *routine)
867 #ifdef SERIAL_PARANOIA_CHECK
868 static const char *badmagic =
869 "cyc Warning: bad magic number for serial struct (%s) in %s\n";
870 static const char *badinfo =
871 "cyc Warning: null cyclades_port for (%s) in %s\n";
872 static const char *badrange =
873 "cyc Warning: cyclades_port out of range for (%s) in %s\n";
876 printk(badinfo, name, routine);
880 if( (long)info < (long)(&cy_port[0])
881 || (long)(&cy_port[NR_PORTS]) < (long)info ){
882 printk(badrange, name, routine);
886 if (info->magic != CYCLADES_MAGIC) {
887 printk(badmagic, name, routine);
892 } /* serial_paranoia_check */
895 * This routine is used by the interrupt handler to schedule
896 * processing in the software interrupt portion of the driver
897 * (also known as the "bottom half"). This can be called any
898 * number of times for any channel without harm.
901 cy_sched_event(struct cyclades_port *info, int event)
903 info->event |= 1 << event; /* remember what kind of event and who */
904 schedule_work(&info->tqueue);
905 } /* cy_sched_event */
909 * This routine is used to handle the "bottom half" processing for the
910 * serial driver, known also the "software interrupt" processing.
911 * This processing is done at the kernel interrupt level, after the
912 * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
913 * is where time-consuming activities which can not be done in the
914 * interrupt driver proper are done; the interrupt driver schedules
915 * them using cy_sched_event(), and they get done here.
917 * This is done through one level of indirection--the task queue.
918 * When a hardware interrupt service routine wants service by the
919 * driver's bottom half, it enqueues the appropriate tq_struct (one
920 * per port) to the keventd work queue and sets a request flag
921 * that the work queue be processed.
923 * Although this may seem unwieldy, it gives the system a way to
924 * pass an argument (in this case the pointer to the cyclades_port
925 * structure) to the bottom half of the driver. Previous kernels
926 * had to poll every port to see if that port needed servicing.
929 do_softint(void *private_)
931 struct cyclades_port *info = (struct cyclades_port *) private_;
932 struct tty_struct *tty;
938 if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) {
939 tty_hangup(info->tty);
940 wake_up_interruptible(&info->open_wait);
941 info->flags &= ~ASYNC_NORMAL_ACTIVE;
943 if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) {
944 wake_up_interruptible(&info->open_wait);
946 #ifdef CONFIG_CYZ_INTR
947 if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event)) {
948 if (cyz_rx_full_timer[info->line].function == NULL) {
949 cyz_rx_full_timer[info->line].expires = jiffies + 1;
950 cyz_rx_full_timer[info->line].function = cyz_rx_restart;
951 cyz_rx_full_timer[info->line].data = (unsigned long)info;
952 add_timer(&cyz_rx_full_timer[info->line]);
956 if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) {
957 wake_up_interruptible(&info->delta_msr_wait);
959 if (test_and_clear_bit(Cy_EVENT_WRITE_WAKEUP, &info->event)) {
961 wake_up_interruptible(&tty->write_wait);
964 if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) {
965 wake_up_interruptible(&info->shutdown_wait);
971 /***********************************************************/
972 /********* Start of block of Cyclom-Y specific code ********/
974 /* This routine waits up to 1000 micro-seconds for the previous
975 command to the Cirrus chip to complete and then issues the
976 new command. An error is returned if the previous command
977 didn't finish within the time limit.
979 This function is only called from inside spinlock-protected code.
982 cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index)
986 /* Check to see that the previous command has completed */
987 for(i = 0 ; i < 100 ; i++){
988 if (cy_readb(base_addr+(CyCCR<<index)) == 0){
993 /* if the CCR never cleared, the previous command
994 didn't finish within the "reasonable time" */
995 if (i == 100) return (-1);
997 /* Issue the new command */
998 cy_writeb(base_addr+(CyCCR<<index), cmd);
1001 } /* cyy_issue_cmd */
1004 /* ISA interrupt detection code */
1006 detect_isa_irq(void __iomem *address)
1009 unsigned long irqs, flags;
1010 int save_xir, save_car;
1011 int index = 0; /* IRQ probing is only for ISA */
1013 /* forget possible initially masked and pending IRQ */
1014 irq = probe_irq_off(probe_irq_on());
1016 /* Clear interrupts on the board first */
1017 cy_writeb(address + (Cy_ClrIntr<<index), 0);
1018 /* Cy_ClrIntr is 0x1800 */
1020 irqs = probe_irq_on();
1024 /* Enable the Tx interrupts on the CD1400 */
1025 local_irq_save(flags);
1026 cy_writeb(address + (CyCAR<<index), 0);
1027 cyy_issue_cmd(address, CyCHAN_CTL|CyENB_XMTR, index);
1029 cy_writeb(address + (CyCAR<<index), 0);
1030 cy_writeb(address + (CySRER<<index),
1031 cy_readb(address + (CySRER<<index)) | CyTxRdy);
1032 local_irq_restore(flags);
1037 /* Check which interrupt is in use */
1038 irq = probe_irq_off(irqs);
1041 save_xir = (u_char) cy_readb(address + (CyTIR<<index));
1042 save_car = cy_readb(address + (CyCAR<<index));
1043 cy_writeb(address + (CyCAR<<index), (save_xir & 0x3));
1044 cy_writeb(address + (CySRER<<index),
1045 cy_readb(address + (CySRER<<index)) & ~CyTxRdy);
1046 cy_writeb(address + (CyTIR<<index), (save_xir & 0x3f));
1047 cy_writeb(address + (CyCAR<<index), (save_car));
1048 cy_writeb(address + (Cy_ClrIntr<<index), 0);
1049 /* Cy_ClrIntr is 0x1800 */
1051 return (irq > 0)? irq : 0;
1053 #endif /* CONFIG_ISA */
1055 /* The real interrupt service routine is called
1056 whenever the card wants its hand held--chars
1057 received, out buffer empty, modem change, etc.
1060 cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1062 struct tty_struct *tty;
1064 struct cyclades_card *cinfo;
1065 struct cyclades_port *info;
1066 void __iomem *base_addr, *card_base_addr;
1068 int save_xir, channel, save_car;
1070 volatile int char_count;
1078 if((cinfo = (struct cyclades_card *)dev_id) == 0){
1079 #ifdef CY_DEBUG_INTERRUPTS
1080 printk("cyy_interrupt: spurious interrupt %d\n\r", irq);
1082 return IRQ_NONE; /* spurious interrupt */
1085 card_base_addr = cinfo->base_addr;
1086 index = cinfo->bus_index;
1089 /* This loop checks all chips in the card. Make a note whenever
1090 _any_ chip had some work to do, as this is considered an
1091 indication that there will be more to do. Only when no chip
1092 has any work does this outermost loop exit.
1096 for ( chip = 0 ; chip < cinfo->num_chips ; chip ++) {
1097 base_addr = cinfo->base_addr + (cy_chip_offset[chip]<<index);
1099 while ( (status = cy_readb(base_addr+(CySVRR<<index))) != 0x00) {
1101 /* The purpose of the following test is to ensure that
1102 no chip can monopolize the driver. This forces the
1103 chips to be checked in a round-robin fashion (after
1104 draining each of a bunch (1000) of characters).
1106 if(1000<too_many++){
1109 if (status & CySRReceive) { /* reception interrupt */
1110 #ifdef CY_DEBUG_INTERRUPTS
1111 printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip);
1113 /* determine the channel & change to that context */
1114 spin_lock(&cinfo->card_lock);
1115 save_xir = (u_char) cy_readb(base_addr+(CyRIR<<index));
1116 channel = (u_short ) (save_xir & CyIRChannel);
1117 i = channel + chip * 4 + cinfo->first_line;
1119 info->last_active = jiffies;
1120 save_car = cy_readb(base_addr+(CyCAR<<index));
1121 cy_writeb(base_addr+(CyCAR<<index), save_xir);
1123 /* if there is nowhere to put the data, discard it */
1125 j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
1126 if ( j == CyIVRRxEx ) { /* exception */
1127 data = cy_readb(base_addr+(CyRDSR<<index));
1128 } else { /* normal character reception */
1129 char_count = cy_readb(base_addr+(CyRDCR<<index));
1130 while(char_count--){
1131 data = cy_readb(base_addr+(CyRDSR<<index));
1134 }else{ /* there is an open port for this data */
1136 j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask);
1137 if ( j == CyIVRRxEx ) { /* exception */
1138 data = cy_readb(base_addr+(CyRDSR<<index));
1140 /* For statistics only */
1143 else if(data & CyFRAME)
1144 info->icount.frame++;
1145 else if(data & CyPARITY)
1146 info->icount.parity++;
1147 else if(data & CyOVERRUN)
1148 info->icount.overrun++;
1150 if(data & info->ignore_status_mask){
1154 if (tty_buffer_request_room(tty, 1)) {
1155 if (data & info->read_status_mask){
1157 tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_BREAK);
1159 if (info->flags & ASYNC_SAK){
1162 }else if(data & CyFRAME){
1163 tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
1165 info->idle_stats.frame_errs++;
1166 }else if(data & CyPARITY){
1167 /* Pieces of seven... */
1168 tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_PARITY);
1170 info->idle_stats.parity_errs++;
1171 }else if(data & CyOVERRUN){
1172 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
1174 /* If the flip buffer itself is
1175 overflowing, we still lose
1176 the next incoming character.
1178 tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
1180 info->idle_stats.overruns++;
1181 /* These two conditions may imply */
1182 /* a normal read should be done. */
1183 /* }else if(data & CyTIMEOUT){ */
1184 /* }else if(data & CySPECHAR){ */
1186 tty_insert_flip_char(tty, 0, TTY_NORMAL);
1190 tty_insert_flip_char(tty, 0, TTY_NORMAL);
1194 /* there was a software buffer
1195 overrun and nothing could be
1197 info->icount.buf_overrun++;
1198 info->idle_stats.overruns++;
1200 } else { /* normal character reception */
1201 /* load # chars available from the chip */
1202 char_count = cy_readb(base_addr+(CyRDCR<<index));
1204 #ifdef CY_ENABLE_MONITORING
1205 ++info->mon.int_count;
1206 info->mon.char_count += char_count;
1207 if (char_count > info->mon.char_max)
1208 info->mon.char_max = char_count;
1209 info->mon.char_last = char_count;
1211 len = tty_buffer_request_room(tty, char_count);
1213 data = cy_readb(base_addr+(CyRDSR<<index));
1214 tty_insert_flip_char(tty, data, TTY_NORMAL);
1215 info->idle_stats.recv_bytes++;
1221 info->idle_stats.recv_idle = jiffies;
1223 tty_schedule_flip(tty);
1225 /* end of service */
1226 cy_writeb(base_addr+(CyRIR<<index), (save_xir & 0x3f));
1227 cy_writeb(base_addr+(CyCAR<<index), (save_car));
1228 spin_unlock(&cinfo->card_lock);
1232 if (status & CySRTransmit) { /* transmission interrupt */
1233 /* Since we only get here when the transmit buffer
1234 is empty, we know we can always stuff a dozen
1236 #ifdef CY_DEBUG_INTERRUPTS
1237 printk("cyy_interrupt: xmit intr, chip %d\n\r", chip);
1240 /* determine the channel & change to that context */
1241 spin_lock(&cinfo->card_lock);
1242 save_xir = (u_char) cy_readb(base_addr+(CyTIR<<index));
1243 channel = (u_short ) (save_xir & CyIRChannel);
1244 i = channel + chip * 4 + cinfo->first_line;
1245 save_car = cy_readb(base_addr+(CyCAR<<index));
1246 cy_writeb(base_addr+(CyCAR<<index), save_xir);
1248 /* validate the port# (as configured and open) */
1249 if( (i < 0) || (NR_PORTS <= i) ){
1250 cy_writeb(base_addr+(CySRER<<index),
1251 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
1255 info->last_active = jiffies;
1257 cy_writeb(base_addr+(CySRER<<index),
1258 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
1262 /* load the on-chip space for outbound data */
1263 char_count = info->xmit_fifo_size;
1265 if(info->x_char) { /* send special char */
1266 outch = info->x_char;
1267 cy_writeb(base_addr+(CyTDR<<index), outch);
1273 if (info->breakon || info->breakoff) {
1274 if (info->breakon) {
1275 cy_writeb(base_addr + (CyTDR<<index), 0);
1276 cy_writeb(base_addr + (CyTDR<<index), 0x81);
1280 if (info->breakoff) {
1281 cy_writeb(base_addr + (CyTDR<<index), 0);
1282 cy_writeb(base_addr + (CyTDR<<index), 0x83);
1288 while (char_count-- > 0){
1289 if (!info->xmit_cnt){
1290 if (cy_readb(base_addr+(CySRER<<index))&CyTxMpty) {
1291 cy_writeb(base_addr+(CySRER<<index),
1292 cy_readb(base_addr+(CySRER<<index)) &
1295 cy_writeb(base_addr+(CySRER<<index),
1296 ((cy_readb(base_addr+(CySRER<<index))
1302 if (info->xmit_buf == 0){
1303 cy_writeb(base_addr+(CySRER<<index),
1304 cy_readb(base_addr+(CySRER<<index)) &
1308 if (info->tty->stopped || info->tty->hw_stopped){
1309 cy_writeb(base_addr+(CySRER<<index),
1310 cy_readb(base_addr+(CySRER<<index)) &
1314 /* Because the Embedded Transmit Commands have
1315 been enabled, we must check to see if the
1316 escape character, NULL, is being sent. If it
1317 is, we must ensure that there is room for it
1318 to be doubled in the output stream. Therefore
1319 we no longer advance the pointer when the
1320 character is fetched, but rather wait until
1321 after the check for a NULL output character.
1322 This is necessary because there may not be
1323 room for the two chars needed to send a NULL.)
1325 outch = info->xmit_buf[info->xmit_tail];
1328 info->xmit_tail = (info->xmit_tail + 1)
1329 & (SERIAL_XMIT_SIZE - 1);
1330 cy_writeb(base_addr+(CyTDR<<index), outch);
1335 info->xmit_tail = (info->xmit_tail + 1)
1336 & (SERIAL_XMIT_SIZE - 1);
1337 cy_writeb(base_addr+(CyTDR<<index),
1339 cy_writeb(base_addr+(CyTDR<<index), 0);
1348 if (info->xmit_cnt < WAKEUP_CHARS) {
1349 cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
1352 /* end of service */
1353 cy_writeb(base_addr+(CyTIR<<index),
1355 cy_writeb(base_addr+(CyCAR<<index), (save_car));
1356 spin_unlock(&cinfo->card_lock);
1359 if (status & CySRModem) { /* modem interrupt */
1361 /* determine the channel & change to that context */
1362 spin_lock(&cinfo->card_lock);
1363 save_xir = (u_char) cy_readb(base_addr+(CyMIR<<index));
1364 channel = (u_short ) (save_xir & CyIRChannel);
1365 info = &cy_port[channel + chip * 4
1366 + cinfo->first_line];
1367 info->last_active = jiffies;
1368 save_car = cy_readb(base_addr+(CyCAR<<index));
1369 cy_writeb(base_addr+(CyCAR<<index), save_xir);
1371 mdm_change = cy_readb(base_addr+(CyMISR<<index));
1372 mdm_status = cy_readb(base_addr+(CyMSVR1<<index));
1374 if(info->tty == 0){/* no place for data, ignore it*/
1377 if (mdm_change & CyANY_DELTA) {
1378 /* For statistics only */
1379 if (mdm_change & CyDCD) info->icount.dcd++;
1380 if (mdm_change & CyCTS) info->icount.cts++;
1381 if (mdm_change & CyDSR) info->icount.dsr++;
1382 if (mdm_change & CyRI) info->icount.rng++;
1384 cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
1387 if((mdm_change & CyDCD)
1388 && (info->flags & ASYNC_CHECK_CD)){
1389 if(mdm_status & CyDCD){
1390 cy_sched_event(info,
1391 Cy_EVENT_OPEN_WAKEUP);
1393 cy_sched_event(info,
1397 if((mdm_change & CyCTS)
1398 && (info->flags & ASYNC_CTS_FLOW)){
1399 if(info->tty->hw_stopped){
1400 if(mdm_status & CyCTS){
1401 /* cy_start isn't used
1403 info->tty->hw_stopped = 0;
1404 cy_writeb(base_addr+(CySRER<<index),
1405 cy_readb(base_addr+(CySRER<<index)) |
1407 cy_sched_event(info,
1408 Cy_EVENT_WRITE_WAKEUP);
1411 if(!(mdm_status & CyCTS)){
1412 /* cy_stop isn't used
1414 info->tty->hw_stopped = 1;
1415 cy_writeb(base_addr+(CySRER<<index),
1416 cy_readb(base_addr+(CySRER<<index)) &
1421 if(mdm_change & CyDSR){
1423 if(mdm_change & CyRI){
1426 /* end of service */
1427 cy_writeb(base_addr+(CyMIR<<index),
1429 cy_writeb(base_addr+(CyCAR<<index), save_car);
1430 spin_unlock(&cinfo->card_lock);
1432 } /* end while status != 0 */
1433 } /* end loop for chips... */
1436 /* clear interrupts */
1437 spin_lock(&cinfo->card_lock);
1438 cy_writeb(card_base_addr + (Cy_ClrIntr<<index), 0);
1439 /* Cy_ClrIntr is 0x1800 */
1440 spin_unlock(&cinfo->card_lock);
1442 } /* cyy_interrupt */
1444 /***********************************************************/
1445 /********* End of block of Cyclom-Y specific code **********/
1446 /******** Start of block of Cyclades-Z specific code *********/
1447 /***********************************************************/
1450 cyz_fetch_msg( struct cyclades_card *cinfo,
1451 uclong *channel, ucchar *cmd, uclong *param)
1453 struct FIRM_ID __iomem *firm_id;
1454 struct ZFW_CTRL __iomem *zfw_ctrl;
1455 struct BOARD_CTRL __iomem *board_ctrl;
1456 unsigned long loc_doorbell;
1458 firm_id = cinfo->base_addr + ID_ADDRESS;
1459 if (!ISZLOADED(*cinfo)){
1462 zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
1463 board_ctrl = &zfw_ctrl->board_ctrl;
1465 loc_doorbell = cy_readl(&((struct RUNTIME_9060 __iomem *)
1466 (cinfo->ctl_addr))->loc_doorbell);
1468 *cmd = (char)(0xff & loc_doorbell);
1469 *channel = cy_readl(&board_ctrl->fwcmd_channel);
1470 *param = (uclong)cy_readl(&board_ctrl->fwcmd_param);
1471 cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->loc_doorbell,
1476 } /* cyz_fetch_msg */
1479 cyz_issue_cmd( struct cyclades_card *cinfo,
1480 uclong channel, ucchar cmd, uclong param)
1482 struct FIRM_ID __iomem *firm_id;
1483 struct ZFW_CTRL __iomem *zfw_ctrl;
1484 struct BOARD_CTRL __iomem *board_ctrl;
1485 unsigned long __iomem *pci_doorbell;
1488 firm_id = cinfo->base_addr + ID_ADDRESS;
1489 if (!ISZLOADED(*cinfo)){
1492 zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
1493 board_ctrl = &zfw_ctrl->board_ctrl;
1496 pci_doorbell = &((struct RUNTIME_9060 __iomem *) (cinfo->ctl_addr))->pci_doorbell;
1497 while( (cy_readl(pci_doorbell) & 0xff) != 0){
1498 if (index++ == 1000){
1499 return((int)(cy_readl(pci_doorbell) & 0xff));
1503 cy_writel(&board_ctrl->hcmd_channel, channel);
1504 cy_writel(&board_ctrl->hcmd_param , param);
1505 cy_writel(pci_doorbell, (long)cmd);
1508 } /* cyz_issue_cmd */
1511 cyz_handle_rx(struct cyclades_port *info,
1512 volatile struct CH_CTRL __iomem *ch_ctrl,
1513 volatile struct BUF_CTRL __iomem *buf_ctrl)
1515 struct cyclades_card *cinfo = &cy_card[info->card];
1516 struct tty_struct *tty = info->tty;
1517 volatile int char_count;
1524 volatile uclong rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr;
1526 rx_get = new_rx_get = cy_readl(&buf_ctrl->rx_get);
1527 rx_put = cy_readl(&buf_ctrl->rx_put);
1528 rx_bufsize = cy_readl(&buf_ctrl->rx_bufsize);
1529 rx_bufaddr = cy_readl(&buf_ctrl->rx_bufaddr);
1530 if (rx_put >= rx_get)
1531 char_count = rx_put - rx_get;
1533 char_count = rx_put - rx_get + rx_bufsize;
1536 info->last_active = jiffies;
1537 info->jiffies[1] = jiffies;
1539 #ifdef CY_ENABLE_MONITORING
1540 info->mon.int_count++;
1541 info->mon.char_count += char_count;
1542 if (char_count > info->mon.char_max)
1543 info->mon.char_max = char_count;
1544 info->mon.char_last = char_count;
1547 /* flush received characters */
1548 new_rx_get = (new_rx_get + char_count) & (rx_bufsize - 1);
1549 info->rflush_count++;
1552 /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
1553 for performance, but because of buffer boundaries, there
1554 may be several steps to the operation */
1555 while(0 < (small_count =
1556 min_t(unsigned int, (rx_bufsize - new_rx_get),
1557 min_t(unsigned int, (TTY_FLIPBUF_SIZE - tty->flip.count), char_count))
1559 memcpy_fromio(tty->flip.char_buf_ptr,
1560 (char *)(cinfo->base_addr
1561 + rx_bufaddr + new_rx_get),
1564 tty->flip.char_buf_ptr += small_count;
1565 memset(tty->flip.flag_buf_ptr, TTY_NORMAL, small_count);
1566 tty->flip.flag_buf_ptr += small_count;
1567 new_rx_get = (new_rx_get + small_count) & (rx_bufsize - 1);
1568 char_count -= small_count;
1569 info->icount.rx += small_count;
1570 info->idle_stats.recv_bytes += small_count;
1571 tty->flip.count += small_count;
1574 len = tty_buffer_request_room(tty, char_count);
1576 data = cy_readb(cinfo->base_addr + rx_bufaddr + new_rx_get);
1577 new_rx_get = (new_rx_get + 1) & (rx_bufsize - 1);
1578 tty_insert_flip_char(tty, data, TTY_NORMAL);
1579 info->idle_stats.recv_bytes++;
1583 #ifdef CONFIG_CYZ_INTR
1584 /* Recalculate the number of chars in the RX buffer and issue
1585 a cmd in case it's higher than the RX high water mark */
1586 rx_put = cy_readl(&buf_ctrl->rx_put);
1587 if (rx_put >= rx_get)
1588 char_count = rx_put - rx_get;
1590 char_count = rx_put - rx_get + rx_bufsize;
1591 if(char_count >= cy_readl(&buf_ctrl->rx_threshold)) {
1592 cy_sched_event(info, Cy_EVENT_Z_RX_FULL);
1595 info->idle_stats.recv_idle = jiffies;
1596 tty_schedule_flip(tty);
1599 cy_writel(&buf_ctrl->rx_get, new_rx_get);
1604 cyz_handle_tx(struct cyclades_port *info,
1605 volatile struct CH_CTRL __iomem *ch_ctrl,
1606 volatile struct BUF_CTRL __iomem *buf_ctrl)
1608 struct cyclades_card *cinfo = &cy_card[info->card];
1609 struct tty_struct *tty = info->tty;
1611 volatile int char_count;
1615 volatile uclong tx_put, tx_get, tx_bufsize, tx_bufaddr;
1617 if (info->xmit_cnt <= 0) /* Nothing to transmit */
1620 tx_get = cy_readl(&buf_ctrl->tx_get);
1621 tx_put = cy_readl(&buf_ctrl->tx_put);
1622 tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize);
1623 tx_bufaddr = cy_readl(&buf_ctrl->tx_bufaddr);
1624 if (tx_put >= tx_get)
1625 char_count = tx_get - tx_put - 1 + tx_bufsize;
1627 char_count = tx_get - tx_put - 1;
1635 if(info->x_char) { /* send special char */
1636 data = info->x_char;
1638 cy_writeb((cinfo->base_addr + tx_bufaddr + tx_put), data);
1639 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1643 info->last_active = jiffies;
1644 info->jiffies[2] = jiffies;
1647 while(0 < (small_count =
1648 min_t(unsigned int, (tx_bufsize - tx_put),
1649 min_t(unsigned int, (SERIAL_XMIT_SIZE - info->xmit_tail),
1650 min_t(unsigned int, info->xmit_cnt, char_count))))) {
1652 memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put),
1653 &info->xmit_buf[info->xmit_tail],
1656 tx_put = (tx_put + small_count) & (tx_bufsize - 1);
1657 char_count -= small_count;
1658 info->icount.tx += small_count;
1659 info->xmit_cnt -= small_count;
1661 (info->xmit_tail + small_count) & (SERIAL_XMIT_SIZE - 1);
1662 info->last_active = jiffies;
1663 info->jiffies[2] = jiffies;
1666 while (info->xmit_cnt && char_count){
1667 data = info->xmit_buf[info->xmit_tail];
1669 info->xmit_tail = (info->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
1671 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1672 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1675 info->last_active = jiffies;
1676 info->jiffies[2] = jiffies;
1680 if (info->xmit_cnt < WAKEUP_CHARS) {
1681 cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP);
1684 cy_writel(&buf_ctrl->tx_put, tx_put);
1689 cyz_handle_cmd(struct cyclades_card *cinfo)
1691 struct tty_struct *tty;
1692 struct cyclades_port *info;
1693 static volatile struct FIRM_ID __iomem *firm_id;
1694 static volatile struct ZFW_CTRL __iomem *zfw_ctrl;
1695 static volatile struct BOARD_CTRL __iomem *board_ctrl;
1696 static volatile struct CH_CTRL __iomem *ch_ctrl;
1697 static volatile struct BUF_CTRL __iomem *buf_ctrl;
1701 uclong hw_ver, fw_ver;
1705 firm_id = cinfo->base_addr + ID_ADDRESS;
1706 zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
1707 board_ctrl = &zfw_ctrl->board_ctrl;
1708 fw_ver = cy_readl(&board_ctrl->fw_version);
1709 hw_ver = cy_readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->mail_box_0);
1712 while(cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) {
1715 info = &cy_port[channel + cinfo->first_line];
1716 if((tty = info->tty) == 0) {
1719 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
1720 buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
1724 tty_insert_flip_char(tty, 0, TTY_PARITY);
1729 tty_insert_flip_char(tty, 0, TTY_FRAME);
1734 tty_insert_flip_char(tty, 0, TTY_BREAK);
1741 if (info->flags & ASYNC_CHECK_CD){
1744 cy_readl(&ch_ctrl->rs_status)) & C_RS_DCD) {
1745 cy_sched_event(info, Cy_EVENT_OPEN_WAKEUP);
1747 cy_sched_event(info, Cy_EVENT_HANGUP);
1765 cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP);
1768 #ifdef CONFIG_CYZ_INTR
1772 /* Reception Interrupt */
1773 #ifdef CY_DEBUG_INTERRUPTS
1774 printk("cyz_interrupt: rcvd intr, card %d, port %ld\n\r",
1775 info->card, channel);
1777 cyz_handle_rx(info, ch_ctrl, buf_ctrl);
1782 /* Transmission Interrupt */
1783 #ifdef CY_DEBUG_INTERRUPTS
1784 printk("cyz_interrupt: xmit intr, card %d, port %ld\n\r",
1785 info->card, channel);
1787 cyz_handle_tx(info, ch_ctrl, buf_ctrl);
1789 #endif /* CONFIG_CYZ_INTR */
1791 /* should do something with this !!! */
1797 cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
1799 tty_schedule_flip(tty);
1803 #ifdef CONFIG_CYZ_INTR
1805 cyz_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1807 struct cyclades_card *cinfo;
1809 if((cinfo = (struct cyclades_card *)dev_id) == 0){
1810 #ifdef CY_DEBUG_INTERRUPTS
1811 printk("cyz_interrupt: spurious interrupt %d\n\r", irq);
1813 return IRQ_NONE; /* spurious interrupt */
1816 if (!ISZLOADED(*cinfo)) {
1817 #ifdef CY_DEBUG_INTERRUPTS
1818 printk("cyz_interrupt: board not yet loaded (IRQ%d).\n\r", irq);
1823 /* Handle the interrupts */
1824 cyz_handle_cmd(cinfo);
1827 } /* cyz_interrupt */
1830 cyz_rx_restart(unsigned long arg)
1832 struct cyclades_port *info = (struct cyclades_port *)arg;
1834 int card = info->card;
1835 uclong channel = (info->line) - (cy_card[card].first_line);
1836 unsigned long flags;
1838 CY_LOCK(info, flags);
1839 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK2, 0L);
1841 printk("cyc:cyz_rx_restart retval on ttyC%d was %x\n",
1842 info->line, retval);
1844 cyz_rx_full_timer[info->line].function = NULL;
1845 CY_UNLOCK(info, flags);
1848 #else /* CONFIG_CYZ_INTR */
1851 cyz_poll(unsigned long arg)
1853 struct cyclades_card *cinfo;
1854 struct cyclades_port *info;
1855 struct tty_struct *tty;
1856 static volatile struct FIRM_ID *firm_id;
1857 static volatile struct ZFW_CTRL *zfw_ctrl;
1858 static volatile struct BOARD_CTRL *board_ctrl;
1859 static volatile struct CH_CTRL *ch_ctrl;
1860 static volatile struct BUF_CTRL *buf_ctrl;
1863 cyz_timerlist.expires = jiffies + (HZ);
1864 for (card = 0 ; card < NR_CARDS ; card++){
1865 cinfo = &cy_card[card];
1867 if (!IS_CYC_Z(*cinfo)) continue;
1868 if (!ISZLOADED(*cinfo)) continue;
1870 firm_id = cinfo->base_addr + ID_ADDRESS;
1871 zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
1872 board_ctrl = &(zfw_ctrl->board_ctrl);
1874 /* Skip first polling cycle to avoid racing conditions with the FW */
1875 if (!cinfo->intr_enabled) {
1876 cinfo->nports = (int) cy_readl(&board_ctrl->n_channel);
1877 cinfo->intr_enabled = 1;
1881 cyz_handle_cmd(cinfo);
1883 for (port = 0 ; port < cinfo->nports ; port++) {
1884 info = &cy_port[ port + cinfo->first_line ];
1886 ch_ctrl = &(zfw_ctrl->ch_ctrl[port]);
1887 buf_ctrl = &(zfw_ctrl->buf_ctrl[port]);
1889 if (!info->throttle)
1890 cyz_handle_rx(info, ch_ctrl, buf_ctrl);
1891 cyz_handle_tx(info, ch_ctrl, buf_ctrl);
1893 /* poll every 'cyz_polling_cycle' period */
1894 cyz_timerlist.expires = jiffies + cyz_polling_cycle;
1896 add_timer(&cyz_timerlist);
1901 #endif /* CONFIG_CYZ_INTR */
1903 /********** End of block of Cyclades-Z specific code *********/
1904 /***********************************************************/
1907 /* This is called whenever a port becomes active;
1908 interrupts are enabled and DTR & RTS are turned on.
1911 startup(struct cyclades_port * info)
1913 unsigned long flags;
1915 void __iomem *base_addr;
1916 int card,chip,channel,index;
1920 channel = (info->line) - (cy_card[card].first_line);
1922 page = get_zeroed_page(GFP_KERNEL);
1926 CY_LOCK(info, flags);
1928 if (info->flags & ASYNC_INITIALIZED){
1935 set_bit(TTY_IO_ERROR, &info->tty->flags);
1944 info->xmit_buf = (unsigned char *) page;
1946 CY_UNLOCK(info, flags);
1948 set_line_char(info);
1950 if (!IS_CYC_Z(cy_card[card])) {
1953 index = cy_card[card].bus_index;
1954 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
1956 #ifdef CY_DEBUG_OPEN
1957 printk("cyc startup card %d, chip %d, channel %d, base_addr %lx\n",
1958 card, chip, channel, (long)base_addr);/**/
1961 CY_LOCK(info, flags);
1963 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
1965 cy_writeb(base_addr+(CyRTPR<<index), (info->default_timeout
1966 ? info->default_timeout : 0x02)); /* 10ms rx timeout */
1968 cyy_issue_cmd(base_addr,CyCHAN_CTL|CyENB_RCVR|CyENB_XMTR,index);
1970 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
1971 cy_writeb(base_addr+(CyMSVR1<<index), CyRTS);
1972 cy_writeb(base_addr+(CyMSVR2<<index), CyDTR);
1975 printk("cyc:startup raising DTR\n");
1976 printk(" status: 0x%x, 0x%x\n",
1977 cy_readb(base_addr+(CyMSVR1<<index)),
1978 cy_readb(base_addr+(CyMSVR2<<index)));
1981 cy_writeb(base_addr+(CySRER<<index),
1982 cy_readb(base_addr+(CySRER<<index)) | CyRxData);
1983 info->flags |= ASYNC_INITIALIZED;
1986 clear_bit(TTY_IO_ERROR, &info->tty->flags);
1988 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1989 info->breakon = info->breakoff = 0;
1990 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
1991 info->idle_stats.in_use =
1992 info->idle_stats.recv_idle =
1993 info->idle_stats.xmit_idle = jiffies;
1995 CY_UNLOCK(info, flags);
1998 struct FIRM_ID __iomem *firm_id;
1999 struct ZFW_CTRL __iomem *zfw_ctrl;
2000 struct BOARD_CTRL __iomem *board_ctrl;
2001 struct CH_CTRL __iomem *ch_ctrl;
2004 base_addr = cy_card[card].base_addr;
2006 firm_id = base_addr + ID_ADDRESS;
2007 if (!ISZLOADED(cy_card[card])){
2011 zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
2012 board_ctrl = &zfw_ctrl->board_ctrl;
2013 ch_ctrl = zfw_ctrl->ch_ctrl;
2015 #ifdef CY_DEBUG_OPEN
2016 printk("cyc startup Z card %d, channel %d, base_addr %lx\n",
2017 card, channel, (long)base_addr);/**/
2020 CY_LOCK(info, flags);
2022 cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE);
2024 #ifdef CONFIG_CYZ_INTR
2025 cy_writel(&ch_ctrl[channel].intr_enable,
2026 C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT|
2030 cy_writel(&ch_ctrl[channel].intr_enable,
2033 #endif /* CONFIG_CYZ_INTR */
2035 #ifdef CONFIG_CYZ_INTR
2036 cy_writel(&ch_ctrl[channel].intr_enable,
2037 C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT|
2040 cy_writel(&ch_ctrl[channel].intr_enable,
2042 #endif /* CONFIG_CYZ_INTR */
2045 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L);
2047 printk("cyc:startup(1) retval on ttyC%d was %x\n",
2048 info->line, retval);
2051 /* Flush RX buffers before raising DTR and RTS */
2052 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_RX, 0L);
2054 printk("cyc:startup(2) retval on ttyC%d was %x\n",
2055 info->line, retval);
2058 /* set timeout !!! */
2059 /* set RTS and DTR !!! */
2060 cy_writel(&ch_ctrl[channel].rs_control,
2061 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | C_RS_DTR) ;
2062 retval = cyz_issue_cmd(&cy_card[info->card],
2063 channel, C_CM_IOCTLM, 0L);
2065 printk("cyc:startup(3) retval on ttyC%d was %x\n",
2066 info->line, retval);
2069 printk("cyc:startup raising Z DTR\n");
2072 /* enable send, recv, modem !!! */
2074 info->flags |= ASYNC_INITIALIZED;
2076 clear_bit(TTY_IO_ERROR, &info->tty->flags);
2078 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
2079 info->breakon = info->breakoff = 0;
2080 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
2081 info->idle_stats.in_use =
2082 info->idle_stats.recv_idle =
2083 info->idle_stats.xmit_idle = jiffies;
2085 CY_UNLOCK(info, flags);
2088 #ifdef CY_DEBUG_OPEN
2089 printk(" cyc startup done\n");
2094 CY_UNLOCK(info, flags);
2100 start_xmit( struct cyclades_port *info )
2102 unsigned long flags;
2103 void __iomem *base_addr;
2104 int card,chip,channel,index;
2107 channel = (info->line) - (cy_card[card].first_line);
2108 if (!IS_CYC_Z(cy_card[card])) {
2111 index = cy_card[card].bus_index;
2112 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
2114 CY_LOCK(info, flags);
2115 cy_writeb(base_addr+(CyCAR<<index), channel);
2116 cy_writeb(base_addr+(CySRER<<index),
2117 cy_readb(base_addr+(CySRER<<index)) | CyTxRdy);
2118 CY_UNLOCK(info, flags);
2120 #ifdef CONFIG_CYZ_INTR
2123 CY_LOCK(info, flags);
2124 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK, 0L);
2126 printk("cyc:start_xmit retval on ttyC%d was %x\n",
2127 info->line, retval);
2129 CY_UNLOCK(info, flags);
2130 #else /* CONFIG_CYZ_INTR */
2131 /* Don't have to do anything at this time */
2132 #endif /* CONFIG_CYZ_INTR */
2137 * This routine shuts down a serial port; interrupts are disabled,
2138 * and DTR is dropped if the hangup on close termio flag is on.
2141 shutdown(struct cyclades_port * info)
2143 unsigned long flags;
2144 void __iomem *base_addr;
2145 int card,chip,channel,index;
2147 if (!(info->flags & ASYNC_INITIALIZED)){
2152 channel = info->line - cy_card[card].first_line;
2153 if (!IS_CYC_Z(cy_card[card])) {
2156 index = cy_card[card].bus_index;
2157 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
2159 #ifdef CY_DEBUG_OPEN
2160 printk("cyc shutdown Y card %d, chip %d, channel %d, base_addr %lx\n",
2161 card, chip, channel, (long)base_addr);
2164 CY_LOCK(info, flags);
2166 /* Clear delta_msr_wait queue to avoid mem leaks. */
2167 wake_up_interruptible(&info->delta_msr_wait);
2169 if (info->xmit_buf){
2170 unsigned char * temp;
2171 temp = info->xmit_buf;
2172 info->xmit_buf = NULL;
2173 free_page((unsigned long) temp);
2175 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
2176 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
2177 cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS);
2178 cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR);
2180 printk("cyc shutdown dropping DTR\n");
2181 printk(" status: 0x%x, 0x%x\n",
2182 cy_readb(base_addr+(CyMSVR1<<index)),
2183 cy_readb(base_addr+(CyMSVR2<<index)));
2186 cyy_issue_cmd(base_addr,CyCHAN_CTL|CyDIS_RCVR,index);
2187 /* it may be appropriate to clear _XMIT at
2188 some later date (after testing)!!! */
2191 set_bit(TTY_IO_ERROR, &info->tty->flags);
2193 info->flags &= ~ASYNC_INITIALIZED;
2194 CY_UNLOCK(info, flags);
2196 struct FIRM_ID __iomem *firm_id;
2197 struct ZFW_CTRL __iomem *zfw_ctrl;
2198 struct BOARD_CTRL __iomem *board_ctrl;
2199 struct CH_CTRL __iomem *ch_ctrl;
2202 base_addr = cy_card[card].base_addr;
2203 #ifdef CY_DEBUG_OPEN
2204 printk("cyc shutdown Z card %d, channel %d, base_addr %lx\n",
2205 card, channel, (long)base_addr);
2208 firm_id = base_addr + ID_ADDRESS;
2209 if (!ISZLOADED(cy_card[card])) {
2213 zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
2214 board_ctrl = &zfw_ctrl->board_ctrl;
2215 ch_ctrl = zfw_ctrl->ch_ctrl;
2217 CY_LOCK(info, flags);
2219 if (info->xmit_buf){
2220 unsigned char * temp;
2221 temp = info->xmit_buf;
2222 info->xmit_buf = NULL;
2223 free_page((unsigned long) temp);
2226 if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
2227 cy_writel(&ch_ctrl[channel].rs_control,
2228 (uclong)(cy_readl(&ch_ctrl[channel].rs_control) &
2229 ~(C_RS_RTS | C_RS_DTR)));
2230 retval = cyz_issue_cmd(&cy_card[info->card],
2231 channel, C_CM_IOCTLM, 0L);
2233 printk("cyc:shutdown retval on ttyC%d was %x\n",
2234 info->line, retval);
2237 printk("cyc:shutdown dropping Z DTR\n");
2242 set_bit(TTY_IO_ERROR, &info->tty->flags);
2244 info->flags &= ~ASYNC_INITIALIZED;
2246 CY_UNLOCK(info, flags);
2249 #ifdef CY_DEBUG_OPEN
2250 printk(" cyc shutdown done\n");
2257 * ------------------------------------------------------------
2258 * cy_open() and friends
2259 * ------------------------------------------------------------
2263 block_til_ready(struct tty_struct *tty, struct file * filp,
2264 struct cyclades_port *info)
2266 DECLARE_WAITQUEUE(wait, current);
2267 struct cyclades_card *cinfo;
2268 unsigned long flags;
2269 int chip, channel,index;
2271 void __iomem *base_addr;
2273 cinfo = &cy_card[info->card];
2274 channel = info->line - cinfo->first_line;
2277 * If the device is in the middle of being closed, then block
2278 * until it's done, and then try again.
2280 if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
2281 if (info->flags & ASYNC_CLOSING) {
2282 interruptible_sleep_on(&info->close_wait);
2284 return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
2288 * If non-blocking mode is set, then make the check up front
2291 if ((filp->f_flags & O_NONBLOCK) ||
2292 (tty->flags & (1 << TTY_IO_ERROR))) {
2293 info->flags |= ASYNC_NORMAL_ACTIVE;
2298 * Block waiting for the carrier detect and the line to become
2299 * free (i.e., not in use by the callout). While we are in
2300 * this loop, info->count is dropped by one, so that
2301 * cy_close() knows when to free things. We restore it upon
2302 * exit, either normal or abnormal.
2305 add_wait_queue(&info->open_wait, &wait);
2306 #ifdef CY_DEBUG_OPEN
2307 printk("cyc block_til_ready before block: ttyC%d, count = %d\n",
2308 info->line, info->count);/**/
2310 CY_LOCK(info, flags);
2311 if (!tty_hung_up_p(filp))
2313 CY_UNLOCK(info, flags);
2314 #ifdef CY_DEBUG_COUNT
2315 printk("cyc block_til_ready: (%d): decrementing count to %d\n",
2316 current->pid, info->count);
2318 info->blocked_open++;
2320 if (!IS_CYC_Z(*cinfo)) {
2323 index = cinfo->bus_index;
2324 base_addr = cinfo->base_addr + (cy_chip_offset[chip]<<index);
2327 CY_LOCK(info, flags);
2328 if ((tty->termios->c_cflag & CBAUD)){
2329 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
2330 cy_writeb(base_addr+(CyMSVR1<<index), CyRTS);
2331 cy_writeb(base_addr+(CyMSVR2<<index), CyDTR);
2333 printk("cyc:block_til_ready raising DTR\n");
2334 printk(" status: 0x%x, 0x%x\n",
2335 cy_readb(base_addr+(CyMSVR1<<index)),
2336 cy_readb(base_addr+(CyMSVR2<<index)));
2339 CY_UNLOCK(info, flags);
2341 set_current_state(TASK_INTERRUPTIBLE);
2342 if (tty_hung_up_p(filp)
2343 || !(info->flags & ASYNC_INITIALIZED) ){
2344 retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
2345 -EAGAIN : -ERESTARTSYS);
2349 CY_LOCK(info, flags);
2350 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
2351 if (!(info->flags & ASYNC_CLOSING)
2353 || (cy_readb(base_addr+(CyMSVR1<<index)) & CyDCD))) {
2354 CY_UNLOCK(info, flags);
2357 CY_UNLOCK(info, flags);
2359 if (signal_pending(current)) {
2360 retval = -ERESTARTSYS;
2363 #ifdef CY_DEBUG_OPEN
2364 printk("cyc block_til_ready blocking: ttyC%d, count = %d\n",
2365 info->line, info->count);/**/
2370 struct FIRM_ID __iomem *firm_id;
2371 struct ZFW_CTRL __iomem *zfw_ctrl;
2372 struct BOARD_CTRL __iomem *board_ctrl;
2373 struct CH_CTRL __iomem *ch_ctrl;
2376 base_addr = cinfo->base_addr;
2377 firm_id = base_addr + ID_ADDRESS;
2378 if (!ISZLOADED(*cinfo)){
2379 current->state = TASK_RUNNING;
2380 remove_wait_queue(&info->open_wait, &wait);
2384 zfw_ctrl = base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
2385 board_ctrl = &zfw_ctrl->board_ctrl;
2386 ch_ctrl = zfw_ctrl->ch_ctrl;
2389 if ((tty->termios->c_cflag & CBAUD)){
2390 cy_writel(&ch_ctrl[channel].rs_control,
2391 cy_readl(&ch_ctrl[channel].rs_control) |
2392 (C_RS_RTS | C_RS_DTR));
2393 retval = cyz_issue_cmd(&cy_card[info->card],
2394 channel, C_CM_IOCTLM, 0L);
2396 printk("cyc:block_til_ready retval on ttyC%d was %x\n",
2397 info->line, retval);
2400 printk("cyc:block_til_ready raising Z DTR\n");
2404 set_current_state(TASK_INTERRUPTIBLE);
2405 if (tty_hung_up_p(filp)
2406 || !(info->flags & ASYNC_INITIALIZED) ){
2407 retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
2408 -EAGAIN : -ERESTARTSYS);
2411 if (!(info->flags & ASYNC_CLOSING)
2413 || (cy_readl(&ch_ctrl[channel].rs_status) & C_RS_DCD))) {
2416 if (signal_pending(current)) {
2417 retval = -ERESTARTSYS;
2420 #ifdef CY_DEBUG_OPEN
2421 printk("cyc block_til_ready blocking: ttyC%d, count = %d\n",
2422 info->line, info->count);/**/
2427 current->state = TASK_RUNNING;
2428 remove_wait_queue(&info->open_wait, &wait);
2429 if (!tty_hung_up_p(filp)){
2431 #ifdef CY_DEBUG_COUNT
2432 printk("cyc:block_til_ready (%d): incrementing count to %d\n",
2433 current->pid, info->count);
2436 info->blocked_open--;
2437 #ifdef CY_DEBUG_OPEN
2438 printk("cyc:block_til_ready after blocking: ttyC%d, count = %d\n",
2439 info->line, info->count);/**/
2443 info->flags |= ASYNC_NORMAL_ACTIVE;
2445 } /* block_til_ready */
2449 * This routine is called whenever a serial port is opened. It
2450 * performs the serial-specific initialization for the tty structure.
2453 cy_open(struct tty_struct *tty, struct file * filp)
2455 struct cyclades_port *info;
2459 if ((line < 0) || (NR_PORTS <= line)){
2462 info = &cy_port[line];
2463 if (info->line < 0){
2467 /* If the card's firmware hasn't been loaded,
2468 treat it as absent from the system. This
2469 will make the user pay attention.
2471 if (IS_CYC_Z(cy_card[info->card])) {
2472 struct cyclades_card *cinfo = &cy_card[info->card];
2473 struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS;
2475 if (!ISZLOADED(*cinfo)) {
2476 if (((ZE_V1 ==cy_readl(&((struct RUNTIME_9060 __iomem *)
2477 (cinfo->ctl_addr))->mail_box_0)) &&
2478 Z_FPGA_CHECK (*cinfo)) &&
2479 (ZFIRM_HLT == cy_readl (&firm_id->signature)))
2481 printk ("cyc:Cyclades-Z Error: you need an external power supply for this number of ports.\n\rFirmware halted.\r\n");
2483 printk("cyc:Cyclades-Z firmware not yet loaded\n");
2487 #ifdef CONFIG_CYZ_INTR
2489 /* In case this Z board is operating in interrupt mode, its
2490 interrupts should be enabled as soon as the first open happens
2491 to one of its ports. */
2492 if (!cinfo->intr_enabled) {
2493 struct ZFW_CTRL __iomem *zfw_ctrl;
2494 struct BOARD_CTRL __iomem *board_ctrl;
2496 zfw_ctrl = cinfo->base_addr + (cy_readl (&firm_id->zfwctrl_addr) & 0xfffff);
2498 board_ctrl = &zfw_ctrl->board_ctrl;
2500 /* Enable interrupts on the PLX chip */
2501 cy_writew(cinfo->ctl_addr+0x68,
2502 cy_readw(cinfo->ctl_addr+0x68)|0x0900);
2503 /* Enable interrupts on the FW */
2504 retval = cyz_issue_cmd(cinfo,
2505 0, C_CM_IRQ_ENBL, 0L);
2507 printk("cyc:IRQ enable retval was %x\n", retval);
2509 cinfo->nports = (int) cy_readl (&board_ctrl->n_channel);
2510 cinfo->intr_enabled = 1;
2513 #endif /* CONFIG_CYZ_INTR */
2514 /* Make sure this Z port really exists in hardware */
2515 if (info->line > (cinfo->first_line + cinfo->nports - 1))
2518 #ifdef CY_DEBUG_OTHER
2519 printk("cyc:cy_open ttyC%d\n", info->line); /* */
2521 tty->driver_data = info;
2523 if (serial_paranoia_check(info, tty->name, "cy_open")){
2526 #ifdef CY_DEBUG_OPEN
2527 printk("cyc:cy_open ttyC%d, count = %d\n",
2528 info->line, info->count);/**/
2531 #ifdef CY_DEBUG_COUNT
2532 printk("cyc:cy_open (%d): incrementing count to %d\n",
2533 current->pid, info->count);
2537 * If the port is the middle of closing, bail out now
2539 if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
2540 if (info->flags & ASYNC_CLOSING)
2541 interruptible_sleep_on(&info->close_wait);
2542 return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
2546 * Start up serial port
2548 retval = startup(info);
2553 retval = block_til_ready(tty, filp, info);
2555 #ifdef CY_DEBUG_OPEN
2556 printk("cyc:cy_open returning after block_til_ready with %d\n",
2564 #ifdef CY_DEBUG_OPEN
2565 printk(" cyc:cy_open done\n");/**/
2573 * cy_wait_until_sent() --- wait until the transmitter is empty
2576 cy_wait_until_sent(struct tty_struct *tty, int timeout)
2578 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
2579 void __iomem *base_addr;
2580 int card,chip,channel,index;
2581 unsigned long orig_jiffies;
2584 if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent"))
2587 if (info->xmit_fifo_size == 0)
2588 return; /* Just in case.... */
2591 orig_jiffies = jiffies;
2593 * Set the check interval to be 1/5 of the estimated time to
2594 * send a single character, and make it at least 1. The check
2595 * interval should also be less than the timeout.
2597 * Note: we have to use pretty tight timings here to satisfy
2600 char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
2601 char_time = char_time / 5;
2607 char_time = min(char_time, timeout);
2609 * If the transmitter hasn't cleared in twice the approximate
2610 * amount of time to send the entire FIFO, it probably won't
2611 * ever clear. This assumes the UART isn't doing flow
2612 * control, which is currently the case. Hence, if it ever
2613 * takes longer than info->timeout, this is probably due to a
2614 * UART bug of some kind. So, we clamp the timeout parameter at
2617 if (!timeout || timeout > 2*info->timeout)
2618 timeout = 2*info->timeout;
2619 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2620 printk("In cy_wait_until_sent(%d) check=%lu...", timeout, char_time);
2621 printk("jiff=%lu...", jiffies);
2624 channel = (info->line) - (cy_card[card].first_line);
2625 if (!IS_CYC_Z(cy_card[card])) {
2628 index = cy_card[card].bus_index;
2629 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
2630 while (cy_readb(base_addr+(CySRER<<index)) & CyTxRdy) {
2631 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2632 printk("Not clean (jiff=%lu)...", jiffies);
2634 if (msleep_interruptible(jiffies_to_msecs(char_time)))
2636 if (timeout && time_after(jiffies, orig_jiffies + timeout))
2642 /* Run one more char cycle */
2643 msleep_interruptible(jiffies_to_msecs(char_time * 5));
2644 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2645 printk("Clean (jiff=%lu)...done\n", jiffies);
2650 * This routine is called when a particular tty device is closed.
2653 cy_close(struct tty_struct *tty, struct file *filp)
2655 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2656 unsigned long flags;
2658 #ifdef CY_DEBUG_OTHER
2659 printk("cyc:cy_close ttyC%d\n", info->line);
2662 if (!info || serial_paranoia_check(info, tty->name, "cy_close")){
2666 CY_LOCK(info, flags);
2667 /* If the TTY is being hung up, nothing to do */
2668 if (tty_hung_up_p(filp)) {
2669 CY_UNLOCK(info, flags);
2673 #ifdef CY_DEBUG_OPEN
2674 printk("cyc:cy_close ttyC%d, count = %d\n", info->line, info->count);
2676 if ((tty->count == 1) && (info->count != 1)) {
2678 * Uh, oh. tty->count is 1, which means that the tty
2679 * structure will be freed. Info->count should always
2680 * be one in these conditions. If it's greater than
2681 * one, we've got real problems, since it means the
2682 * serial port won't be shutdown.
2684 printk("cyc:cy_close: bad serial port count; tty->count is 1, "
2685 "info->count is %d\n", info->count);
2688 #ifdef CY_DEBUG_COUNT
2689 printk("cyc:cy_close at (%d): decrementing count to %d\n",
2690 current->pid, info->count - 1);
2692 if (--info->count < 0) {
2693 #ifdef CY_DEBUG_COUNT
2694 printk("cyc:cyc_close setting count to 0\n");
2699 CY_UNLOCK(info, flags);
2702 info->flags |= ASYNC_CLOSING;
2705 * Now we wait for the transmit buffer to clear; and we notify
2706 * the line discipline to only process XON/XOFF characters.
2709 CY_UNLOCK(info, flags);
2710 if (info->closing_wait != CY_CLOSING_WAIT_NONE) {
2711 tty_wait_until_sent(tty, info->closing_wait);
2713 CY_LOCK(info, flags);
2715 if (!IS_CYC_Z(cy_card[info->card])) {
2716 int channel = info->line - cy_card[info->card].first_line;
2717 int index = cy_card[info->card].bus_index;
2718 void __iomem *base_addr = cy_card[info->card].base_addr + (cy_chip_offset[channel>>2] << index);
2719 /* Stop accepting input */
2721 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
2722 cy_writeb(base_addr+(CySRER<<index),
2723 cy_readb(base_addr+(CySRER<<index)) & ~CyRxData);
2724 if (info->flags & ASYNC_INITIALIZED) {
2725 /* Waiting for on-board buffers to be empty before closing
2727 CY_UNLOCK(info, flags);
2728 cy_wait_until_sent(tty, info->timeout);
2729 CY_LOCK(info, flags);
2733 /* Waiting for on-board buffers to be empty before closing the port */
2734 void __iomem *base_addr = cy_card[info->card].base_addr;
2735 struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS;
2736 struct ZFW_CTRL __iomem *zfw_ctrl = base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
2737 struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl;
2738 int channel = info->line - cy_card[info->card].first_line;
2741 if (cy_readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) {
2742 retval = cyz_issue_cmd(&cy_card[info->card], channel,
2745 printk("cyc:cy_close retval on ttyC%d was %x\n",
2746 info->line, retval);
2748 CY_UNLOCK(info, flags);
2749 interruptible_sleep_on(&info->shutdown_wait);
2750 CY_LOCK(info, flags);
2755 CY_UNLOCK(info, flags);
2757 if (tty->driver->flush_buffer)
2758 tty->driver->flush_buffer(tty);
2759 tty_ldisc_flush(tty);
2760 CY_LOCK(info, flags);
2765 if (info->blocked_open) {
2766 CY_UNLOCK(info, flags);
2767 if (info->close_delay) {
2768 msleep_interruptible(jiffies_to_msecs(info->close_delay));
2770 wake_up_interruptible(&info->open_wait);
2771 CY_LOCK(info, flags);
2773 info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
2774 wake_up_interruptible(&info->close_wait);
2776 #ifdef CY_DEBUG_OTHER
2777 printk(" cyc:cy_close done\n");
2780 CY_UNLOCK(info, flags);
2785 /* This routine gets called when tty_write has put something into
2786 * the write_queue. The characters may come from user space or
2789 * This routine will return the number of characters actually
2790 * accepted for writing.
2792 * If the port is not already transmitting stuff, start it off by
2793 * enabling interrupts. The interrupt service routine will then
2794 * ensure that the characters are sent.
2795 * If the port is already active, there is no need to kick it.
2799 cy_write(struct tty_struct * tty, const unsigned char *buf, int count)
2801 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2802 unsigned long flags;
2806 printk("cyc:cy_write ttyC%d\n", info->line); /* */
2809 if (serial_paranoia_check(info, tty->name, "cy_write")){
2813 if (!info->xmit_buf)
2816 CY_LOCK(info, flags);
2818 c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1),
2819 (int)(SERIAL_XMIT_SIZE - info->xmit_head)));
2824 memcpy(info->xmit_buf + info->xmit_head, buf, c);
2825 info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
2826 info->xmit_cnt += c;
2831 CY_UNLOCK(info, flags);
2833 info->idle_stats.xmit_bytes += ret;
2834 info->idle_stats.xmit_idle = jiffies;
2836 if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) {
2844 * This routine is called by the kernel to write a single
2845 * character to the tty device. If the kernel uses this routine,
2846 * it must call the flush_chars() routine (if defined) when it is
2847 * done stuffing characters into the driver. If there is no room
2848 * in the queue, the character is ignored.
2851 cy_put_char(struct tty_struct *tty, unsigned char ch)
2853 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2854 unsigned long flags;
2857 printk("cyc:cy_put_char ttyC%d\n", info->line);
2860 if (serial_paranoia_check(info, tty->name, "cy_put_char"))
2863 if (!info->xmit_buf)
2866 CY_LOCK(info, flags);
2867 if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
2868 CY_UNLOCK(info, flags);
2872 info->xmit_buf[info->xmit_head++] = ch;
2873 info->xmit_head &= SERIAL_XMIT_SIZE - 1;
2875 info->idle_stats.xmit_bytes++;
2876 info->idle_stats.xmit_idle = jiffies;
2877 CY_UNLOCK(info, flags);
2882 * This routine is called by the kernel after it has written a
2883 * series of characters to the tty device using put_char().
2886 cy_flush_chars(struct tty_struct *tty)
2888 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2891 printk("cyc:cy_flush_chars ttyC%d\n", info->line); /* */
2894 if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
2897 if (info->xmit_cnt <= 0 || tty->stopped
2898 || tty->hw_stopped || !info->xmit_buf)
2902 } /* cy_flush_chars */
2906 * This routine returns the numbers of characters the tty driver
2907 * will accept for queuing to be written. This number is subject
2908 * to change as output buffers get emptied, or if the output flow
2909 * control is activated.
2912 cy_write_room(struct tty_struct *tty)
2914 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2918 printk("cyc:cy_write_room ttyC%d\n", info->line); /* */
2921 if (serial_paranoia_check(info, tty->name, "cy_write_room"))
2923 ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
2927 } /* cy_write_room */
2931 cy_chars_in_buffer(struct tty_struct *tty)
2933 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
2936 if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
2940 channel = (info->line) - (cy_card[card].first_line);
2942 #ifdef Z_EXT_CHARS_IN_BUFFER
2943 if (!IS_CYC_Z(cy_card[card])) {
2944 #endif /* Z_EXT_CHARS_IN_BUFFER */
2946 printk("cyc:cy_chars_in_buffer ttyC%d %d\n",
2947 info->line, info->xmit_cnt); /* */
2949 return info->xmit_cnt;
2950 #ifdef Z_EXT_CHARS_IN_BUFFER
2952 static volatile struct FIRM_ID *firm_id;
2953 static volatile struct ZFW_CTRL *zfw_ctrl;
2954 static volatile struct CH_CTRL *ch_ctrl;
2955 static volatile struct BUF_CTRL *buf_ctrl;
2957 volatile uclong tx_put, tx_get, tx_bufsize;
2959 firm_id = cy_card[card].base_addr + ID_ADDRESS;
2960 zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
2961 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
2962 buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]);
2964 tx_get = cy_readl(&buf_ctrl->tx_get);
2965 tx_put = cy_readl(&buf_ctrl->tx_put);
2966 tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize);
2967 if (tx_put >= tx_get)
2968 char_count = tx_put - tx_get;
2970 char_count = tx_put - tx_get + tx_bufsize;
2972 printk("cyc:cy_chars_in_buffer ttyC%d %d\n",
2973 info->line, info->xmit_cnt + char_count); /* */
2975 return (info->xmit_cnt + char_count);
2977 #endif /* Z_EXT_CHARS_IN_BUFFER */
2978 } /* cy_chars_in_buffer */
2982 * ------------------------------------------------------------
2983 * cy_ioctl() and friends
2984 * ------------------------------------------------------------
2988 cyy_baud_calc(struct cyclades_port *info, uclong baud)
2990 int co, co_val, bpr;
2991 uclong cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : 25000000);
2994 info->tbpr = info->tco = info->rbpr = info->rco = 0;
2998 /* determine which prescaler to use */
2999 for (co = 4, co_val = 2048; co; co--, co_val >>= 2) {
3000 if (cy_clock / co_val / baud > 63)
3004 bpr = (cy_clock / co_val * 2 / baud + 1) / 2;
3008 info->tbpr = info->rbpr = bpr;
3009 info->tco = info->rco = co;
3013 * This routine finds or computes the various line characteristics.
3014 * It used to be called config_setup
3017 set_line_char(struct cyclades_port * info)
3019 unsigned long flags;
3020 void __iomem *base_addr;
3021 int card,chip,channel,index;
3022 unsigned cflag, iflag;
3023 unsigned short chip_number;
3024 int baud, baud_rate = 0;
3028 if (!info->tty || !info->tty->termios){
3031 if (info->line == -1){
3034 cflag = info->tty->termios->c_cflag;
3035 iflag = info->tty->termios->c_iflag;
3038 * Set up the tty->alt_speed kludge
3041 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
3042 info->tty->alt_speed = 57600;
3043 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
3044 info->tty->alt_speed = 115200;
3045 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
3046 info->tty->alt_speed = 230400;
3047 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
3048 info->tty->alt_speed = 460800;
3052 channel = (info->line) - (cy_card[card].first_line);
3053 chip_number = channel / 4;
3055 if (!IS_CYC_Z(cy_card[card])) {
3057 index = cy_card[card].bus_index;
3060 baud = tty_get_baud_rate(info->tty);
3061 if ((baud == 38400) &&
3062 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3063 if (info->custom_divisor)
3064 baud_rate = info->baud / info->custom_divisor;
3066 baud_rate = info->baud;
3067 } else if (baud > CD1400_MAX_SPEED) {
3068 baud = CD1400_MAX_SPEED;
3070 /* find the baud index */
3071 for (i = 0; i < 20; i++) {
3072 if (baud == baud_table[i]) {
3077 i = 19; /* CD1400_MAX_SPEED */
3080 if ((baud == 38400) &&
3081 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3082 cyy_baud_calc(info, baud_rate);
3084 if(info->chip_rev >= CD1400_REV_J) {
3085 /* It is a CD1400 rev. J or later */
3086 info->tbpr = baud_bpr_60[i]; /* Tx BPR */
3087 info->tco = baud_co_60[i]; /* Tx CO */
3088 info->rbpr = baud_bpr_60[i]; /* Rx BPR */
3089 info->rco = baud_co_60[i]; /* Rx CO */
3091 info->tbpr = baud_bpr_25[i]; /* Tx BPR */
3092 info->tco = baud_co_25[i]; /* Tx CO */
3093 info->rbpr = baud_bpr_25[i]; /* Rx BPR */
3094 info->rco = baud_co_25[i]; /* Rx CO */
3097 if (baud_table[i] == 134) {
3098 /* get it right for 134.5 baud */
3099 info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2;
3100 } else if ((baud == 38400) &&
3101 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3102 info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2;
3103 } else if (baud_table[i]) {
3104 info->timeout = (info->xmit_fifo_size*HZ*15/baud_table[i]) + 2;
3105 /* this needs to be propagated into the card info */
3109 /* By tradition (is it a standard?) a baud rate of zero
3110 implies the line should be/has been closed. A bit
3111 later in this routine such a test is performed. */
3113 /* byte size and parity */
3116 info->cor3 = (info->default_threshold
3117 ? info->default_threshold
3118 : baud_cor3[i]); /* receive threshold */
3120 switch(cflag & CSIZE){
3122 info->cor1 = Cy_5_BITS;
3125 info->cor1 = Cy_6_BITS;
3128 info->cor1 = Cy_7_BITS;
3131 info->cor1 = Cy_8_BITS;
3135 info->cor1 |= Cy_2_STOP;
3137 if (cflag & PARENB){
3138 if (cflag & PARODD){
3139 info->cor1 |= CyPARITY_O;
3141 info->cor1 |= CyPARITY_E;
3144 info->cor1 |= CyPARITY_NONE;
3147 /* CTS flow control flag */
3148 if (cflag & CRTSCTS){
3149 info->flags |= ASYNC_CTS_FLOW;
3150 info->cor2 |= CyCtsAE;
3152 info->flags &= ~ASYNC_CTS_FLOW;
3153 info->cor2 &= ~CyCtsAE;
3156 info->flags &= ~ASYNC_CHECK_CD;
3158 info->flags |= ASYNC_CHECK_CD;
3160 /***********************************************
3161 The hardware option, CyRtsAO, presents RTS when
3162 the chip has characters to send. Since most modems
3163 use RTS as reverse (inbound) flow control, this
3164 option is not used. If inbound flow control is
3165 necessary, DTR can be programmed to provide the
3166 appropriate signals for use with a non-standard
3167 cable. Contact Marcio Saito for details.
3168 ***********************************************/
3172 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3174 CY_LOCK(info, flags);
3175 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
3177 /* tx and rx baud rate */
3179 cy_writeb(base_addr+(CyTCOR<<index), info->tco);
3180 cy_writeb(base_addr+(CyTBPR<<index), info->tbpr);
3181 cy_writeb(base_addr+(CyRCOR<<index), info->rco);
3182 cy_writeb(base_addr+(CyRBPR<<index), info->rbpr);
3184 /* set line characteristics according configuration */
3186 cy_writeb(base_addr+(CySCHR1<<index),
3187 START_CHAR(info->tty));
3188 cy_writeb(base_addr+(CySCHR2<<index),
3189 STOP_CHAR(info->tty));
3190 cy_writeb(base_addr+(CyCOR1<<index), info->cor1);
3191 cy_writeb(base_addr+(CyCOR2<<index), info->cor2);
3192 cy_writeb(base_addr+(CyCOR3<<index), info->cor3);
3193 cy_writeb(base_addr+(CyCOR4<<index), info->cor4);
3194 cy_writeb(base_addr+(CyCOR5<<index), info->cor5);
3196 cyy_issue_cmd(base_addr,
3197 CyCOR_CHANGE|CyCOR1ch|CyCOR2ch|CyCOR3ch,index);
3199 cy_writeb(base_addr+(CyCAR<<index),
3200 (u_char)channel); /* !!! Is this needed? */
3201 cy_writeb(base_addr+(CyRTPR<<index), (info->default_timeout
3202 ? info->default_timeout
3203 : 0x02)); /* 10ms rx timeout */
3205 if (C_CLOCAL(info->tty)) {
3206 /* without modem intr */
3207 cy_writeb(base_addr+(CySRER<<index),
3208 cy_readb(base_addr+(CySRER<<index)) | CyMdmCh);
3209 /* act on 1->0 modem transitions */
3210 if ((cflag & CRTSCTS) && info->rflow) {
3211 cy_writeb(base_addr+(CyMCOR1<<index),
3212 (CyCTS|rflow_thr[i]));
3214 cy_writeb(base_addr+(CyMCOR1<<index), CyCTS);
3216 /* act on 0->1 modem transitions */
3217 cy_writeb(base_addr+(CyMCOR2<<index), CyCTS);
3219 /* without modem intr */
3220 cy_writeb(base_addr+(CySRER<<index),
3221 cy_readb(base_addr+(CySRER<<index)) | CyMdmCh);
3222 /* act on 1->0 modem transitions */
3223 if ((cflag & CRTSCTS) && info->rflow) {
3224 cy_writeb(base_addr+(CyMCOR1<<index),
3225 (CyDSR|CyCTS|CyRI|CyDCD|rflow_thr[i]));
3227 cy_writeb(base_addr+(CyMCOR1<<index),
3228 CyDSR|CyCTS|CyRI|CyDCD);
3230 /* act on 0->1 modem transitions */
3231 cy_writeb(base_addr+(CyMCOR2<<index),
3232 CyDSR|CyCTS|CyRI|CyDCD);
3235 if(i == 0){ /* baud rate is zero, turn off line */
3236 if (info->rtsdtr_inv) {
3237 cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS);
3239 cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR);
3242 printk("cyc:set_line_char dropping DTR\n");
3243 printk(" status: 0x%x, 0x%x\n",
3244 cy_readb(base_addr+(CyMSVR1<<index)),
3245 cy_readb(base_addr+(CyMSVR2<<index)));
3248 if (info->rtsdtr_inv) {
3249 cy_writeb(base_addr+(CyMSVR1<<index), CyRTS);
3251 cy_writeb(base_addr+(CyMSVR2<<index), CyDTR);
3254 printk("cyc:set_line_char raising DTR\n");
3255 printk(" status: 0x%x, 0x%x\n",
3256 cy_readb(base_addr+(CyMSVR1<<index)),
3257 cy_readb(base_addr+(CyMSVR2<<index)));
3262 clear_bit(TTY_IO_ERROR, &info->tty->flags);
3264 CY_UNLOCK(info, flags);
3267 struct FIRM_ID __iomem *firm_id;
3268 struct ZFW_CTRL __iomem *zfw_ctrl;
3269 struct BOARD_CTRL __iomem *board_ctrl;
3270 struct CH_CTRL __iomem *ch_ctrl;
3271 struct BUF_CTRL __iomem *buf_ctrl;
3275 firm_id = cy_card[card].base_addr + ID_ADDRESS;
3276 if (!ISZLOADED(cy_card[card])) {
3280 zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
3281 board_ctrl = &zfw_ctrl->board_ctrl;
3282 ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]);
3283 buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
3286 baud = tty_get_baud_rate(info->tty);
3287 if ((baud == 38400) &&
3288 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3289 if (info->custom_divisor)
3290 baud_rate = info->baud / info->custom_divisor;
3292 baud_rate = info->baud;
3293 } else if (baud > CYZ_MAX_SPEED) {
3294 baud = CYZ_MAX_SPEED;
3296 cy_writel(&ch_ctrl->comm_baud , baud);
3299 /* get it right for 134.5 baud */
3300 info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2;
3301 } else if ((baud == 38400) &&
3302 ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) {
3303 info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2;
3305 info->timeout = (info->xmit_fifo_size*HZ*15/baud) + 2;
3306 /* this needs to be propagated into the card info */
3311 /* byte size and parity */
3312 switch(cflag & CSIZE){
3313 case CS5: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS5); break;
3314 case CS6: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS6); break;
3315 case CS7: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS7); break;
3316 case CS8: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS8); break;
3319 cy_writel(&ch_ctrl->comm_data_l,
3320 cy_readl(&ch_ctrl->comm_data_l) | C_DL_2STOP);
3322 cy_writel(&ch_ctrl->comm_data_l,
3323 cy_readl(&ch_ctrl->comm_data_l) | C_DL_1STOP);
3325 if (cflag & PARENB){
3326 if (cflag & PARODD){
3327 cy_writel(&ch_ctrl->comm_parity , C_PR_ODD);
3329 cy_writel(&ch_ctrl->comm_parity , C_PR_EVEN);
3332 cy_writel(&ch_ctrl->comm_parity , C_PR_NONE);
3335 /* CTS flow control flag */
3336 if (cflag & CRTSCTS){
3337 cy_writel(&ch_ctrl->hw_flow,
3338 cy_readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS);
3340 cy_writel(&ch_ctrl->hw_flow,
3341 cy_readl(&ch_ctrl->hw_flow) & ~(C_RS_CTS | C_RS_RTS));
3343 /* As the HW flow control is done in firmware, the driver doesn't
3344 need to care about it */
3345 info->flags &= ~ASYNC_CTS_FLOW;
3347 /* XON/XOFF/XANY flow control flags */
3350 sw_flow |= C_FL_OXX;
3352 sw_flow |= C_FL_OIXANY;
3354 cy_writel(&ch_ctrl->sw_flow, sw_flow);
3356 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L);
3358 printk("cyc:set_line_char retval on ttyC%d was %x\n",
3359 info->line, retval);
3362 /* CD sensitivity */
3363 if (cflag & CLOCAL){
3364 info->flags &= ~ASYNC_CHECK_CD;
3366 info->flags |= ASYNC_CHECK_CD;
3369 if(baud == 0){ /* baud rate is zero, turn off line */
3370 cy_writel(&ch_ctrl->rs_control,
3371 cy_readl(&ch_ctrl->rs_control) & ~C_RS_DTR);
3373 printk("cyc:set_line_char dropping Z DTR\n");
3376 cy_writel(&ch_ctrl->rs_control,
3377 cy_readl(&ch_ctrl->rs_control) | C_RS_DTR);
3379 printk("cyc:set_line_char raising Z DTR\n");
3383 retval = cyz_issue_cmd( &cy_card[card], channel, C_CM_IOCTLM, 0L);
3385 printk("cyc:set_line_char(2) retval on ttyC%d was %x\n",
3386 info->line, retval);
3390 clear_bit(TTY_IO_ERROR, &info->tty->flags);
3393 } /* set_line_char */
3397 get_serial_info(struct cyclades_port * info,
3398 struct serial_struct __user * retinfo)
3400 struct serial_struct tmp;
3401 struct cyclades_card *cinfo = &cy_card[info->card];
3405 memset(&tmp, 0, sizeof(tmp));
3406 tmp.type = info->type;
3407 tmp.line = info->line;
3408 tmp.port = info->card * 0x100 + info->line - cinfo->first_line;
3409 tmp.irq = cinfo->irq;
3410 tmp.flags = info->flags;
3411 tmp.close_delay = info->close_delay;
3412 tmp.baud_base = info->baud;
3413 tmp.custom_divisor = info->custom_divisor;
3414 tmp.hub6 = 0; /*!!!*/
3415 return copy_to_user(retinfo,&tmp,sizeof(*retinfo))?-EFAULT:0;
3416 } /* get_serial_info */
3420 set_serial_info(struct cyclades_port * info,
3421 struct serial_struct __user * new_info)
3423 struct serial_struct new_serial;
3424 struct cyclades_port old_info;
3426 if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
3430 if (!capable(CAP_SYS_ADMIN)) {
3431 if ((new_serial.close_delay != info->close_delay) ||
3432 (new_serial.baud_base != info->baud) ||
3433 ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) !=
3434 (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)))
3436 info->flags = ((info->flags & ~ASYNC_USR_MASK) |
3437 (new_serial.flags & ASYNC_USR_MASK));
3438 info->baud = new_serial.baud_base;
3439 info->custom_divisor = new_serial.custom_divisor;
3440 goto check_and_exit;
3445 * OK, past this point, all the error checking has been done.
3446 * At this point, we start making changes.....
3449 info->baud = new_serial.baud_base;
3450 info->custom_divisor = new_serial.custom_divisor;
3451 info->flags = ((info->flags & ~ASYNC_FLAGS) |
3452 (new_serial.flags & ASYNC_FLAGS));
3453 info->close_delay = new_serial.close_delay * HZ/100;
3454 info->closing_wait = new_serial.closing_wait * HZ/100;
3457 if (info->flags & ASYNC_INITIALIZED){
3458 set_line_char(info);
3461 return startup(info);
3463 } /* set_serial_info */
3466 * get_lsr_info - get line status register info
3468 * Purpose: Let user call ioctl() to get info when the UART physically
3469 * is emptied. On bus types like RS485, the transmitter must
3470 * release the bus after transmitting. This must be done when
3471 * the transmit shift register is empty, not be done when the
3472 * transmit holding register is empty. This functionality
3473 * allows an RS485 driver to be written in user space.
3475 static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value)
3477 int card, chip, channel, index;
3478 unsigned char status;
3479 unsigned int result;
3480 unsigned long flags;
3481 void __iomem *base_addr;
3484 channel = (info->line) - (cy_card[card].first_line);
3485 if (!IS_CYC_Z(cy_card[card])) {
3488 index = cy_card[card].bus_index;
3489 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3491 CY_LOCK(info, flags);
3492 status = cy_readb(base_addr+(CySRER<<index)) & (CyTxRdy|CyTxMpty);
3493 CY_UNLOCK(info, flags);
3494 result = (status ? 0 : TIOCSER_TEMT);
3496 /* Not supported yet */
3499 return put_user(result, (unsigned long __user *) value);
3503 cy_tiocmget(struct tty_struct *tty, struct file *file)
3505 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3506 int card,chip,channel,index;
3507 void __iomem *base_addr;
3508 unsigned long flags;
3509 unsigned char status;
3510 unsigned long lstatus;
3511 unsigned int result;
3512 struct FIRM_ID __iomem *firm_id;
3513 struct ZFW_CTRL __iomem *zfw_ctrl;
3514 struct BOARD_CTRL __iomem *board_ctrl;
3515 struct CH_CTRL __iomem *ch_ctrl;
3517 if (serial_paranoia_check(info, tty->name, __FUNCTION__))
3521 channel = (info->line) - (cy_card[card].first_line);
3522 if (!IS_CYC_Z(cy_card[card])) {
3525 index = cy_card[card].bus_index;
3526 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3528 CY_LOCK(info, flags);
3529 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
3530 status = cy_readb(base_addr+(CyMSVR1<<index));
3531 status |= cy_readb(base_addr+(CyMSVR2<<index));
3532 CY_UNLOCK(info, flags);
3534 if (info->rtsdtr_inv) {
3535 result = ((status & CyRTS) ? TIOCM_DTR : 0)
3536 | ((status & CyDTR) ? TIOCM_RTS : 0);
3538 result = ((status & CyRTS) ? TIOCM_RTS : 0)
3539 | ((status & CyDTR) ? TIOCM_DTR : 0);
3541 result |= ((status & CyDCD) ? TIOCM_CAR : 0)
3542 | ((status & CyRI) ? TIOCM_RNG : 0)
3543 | ((status & CyDSR) ? TIOCM_DSR : 0)
3544 | ((status & CyCTS) ? TIOCM_CTS : 0);
3546 base_addr = cy_card[card].base_addr;
3548 if (cy_card[card].num_chips != -1){
3552 firm_id = cy_card[card].base_addr + ID_ADDRESS;
3553 if (ISZLOADED(cy_card[card])) {
3554 zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
3555 board_ctrl = &zfw_ctrl->board_ctrl;
3556 ch_ctrl = zfw_ctrl->ch_ctrl;
3557 lstatus = cy_readl(&ch_ctrl[channel].rs_status);
3558 result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0)
3559 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0)
3560 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0)
3561 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0)
3562 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0)
3563 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
3575 cy_tiocmset(struct tty_struct *tty, struct file *file,
3576 unsigned int set, unsigned int clear)
3578 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3579 int card,chip,channel,index;
3580 void __iomem *base_addr;
3581 unsigned long flags;
3582 struct FIRM_ID __iomem *firm_id;
3583 struct ZFW_CTRL __iomem *zfw_ctrl;
3584 struct BOARD_CTRL __iomem *board_ctrl;
3585 struct CH_CTRL __iomem *ch_ctrl;
3588 if (serial_paranoia_check(info, tty->name, __FUNCTION__))
3592 channel = (info->line) - (cy_card[card].first_line);
3593 if (!IS_CYC_Z(cy_card[card])) {
3596 index = cy_card[card].bus_index;
3597 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3599 if (set & TIOCM_RTS){
3600 CY_LOCK(info, flags);
3601 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
3602 if (info->rtsdtr_inv) {
3603 cy_writeb(base_addr+(CyMSVR2<<index), CyDTR);
3605 cy_writeb(base_addr+(CyMSVR1<<index), CyRTS);
3607 CY_UNLOCK(info, flags);
3609 if (clear & TIOCM_RTS) {
3610 CY_LOCK(info, flags);
3611 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
3612 if (info->rtsdtr_inv) {
3613 cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR);
3615 cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS);
3617 CY_UNLOCK(info, flags);
3619 if (set & TIOCM_DTR){
3620 CY_LOCK(info, flags);
3621 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
3622 if (info->rtsdtr_inv) {
3623 cy_writeb(base_addr+(CyMSVR1<<index), CyRTS);
3625 cy_writeb(base_addr+(CyMSVR2<<index), CyDTR);
3628 printk("cyc:set_modem_info raising DTR\n");
3629 printk(" status: 0x%x, 0x%x\n",
3630 cy_readb(base_addr+(CyMSVR1<<index)),
3631 cy_readb(base_addr+(CyMSVR2<<index)));
3633 CY_UNLOCK(info, flags);
3635 if (clear & TIOCM_DTR) {
3636 CY_LOCK(info, flags);
3637 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
3638 if (info->rtsdtr_inv) {
3639 cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS);
3641 cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR);
3645 printk("cyc:set_modem_info dropping DTR\n");
3646 printk(" status: 0x%x, 0x%x\n",
3647 cy_readb(base_addr+(CyMSVR1<<index)),
3648 cy_readb(base_addr+(CyMSVR2<<index)));
3650 CY_UNLOCK(info, flags);
3653 base_addr = cy_card[card].base_addr;
3655 firm_id = cy_card[card].base_addr + ID_ADDRESS;
3656 if (ISZLOADED(cy_card[card])) {
3657 zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff);
3658 board_ctrl = &zfw_ctrl->board_ctrl;
3659 ch_ctrl = zfw_ctrl->ch_ctrl;
3661 if (set & TIOCM_RTS){
3662 CY_LOCK(info, flags);
3663 cy_writel(&ch_ctrl[channel].rs_control,
3664 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS);
3665 CY_UNLOCK(info, flags);
3667 if (clear & TIOCM_RTS) {
3668 CY_LOCK(info, flags);
3669 cy_writel(&ch_ctrl[channel].rs_control,
3670 cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_RTS);
3671 CY_UNLOCK(info, flags);
3673 if (set & TIOCM_DTR){
3674 CY_LOCK(info, flags);
3675 cy_writel(&ch_ctrl[channel].rs_control,
3676 cy_readl(&ch_ctrl[channel].rs_control) | C_RS_DTR);
3678 printk("cyc:set_modem_info raising Z DTR\n");
3680 CY_UNLOCK(info, flags);
3682 if (clear & TIOCM_DTR) {
3683 CY_LOCK(info, flags);
3684 cy_writel(&ch_ctrl[channel].rs_control,
3685 cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_DTR);
3687 printk("cyc:set_modem_info clearing Z DTR\n");
3689 CY_UNLOCK(info, flags);
3694 CY_LOCK(info, flags);
3695 retval = cyz_issue_cmd(&cy_card[info->card],
3696 channel, C_CM_IOCTLM,0L);
3698 printk("cyc:set_modem_info retval on ttyC%d was %x\n",
3699 info->line, retval);
3701 CY_UNLOCK(info, flags);
3707 * cy_break() --- routine which turns the break handling on or off
3710 cy_break(struct tty_struct *tty, int break_state)
3712 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3713 unsigned long flags;
3715 if (serial_paranoia_check(info, tty->name, "cy_break"))
3718 CY_LOCK(info, flags);
3719 if (!IS_CYC_Z(cy_card[info->card])) {
3720 /* Let the transmit ISR take care of this (since it
3721 requires stuffing characters into the output stream).
3723 if (break_state == -1) {
3724 if (!info->breakon) {
3726 if (!info->xmit_cnt) {
3727 CY_UNLOCK(info, flags);
3729 CY_LOCK(info, flags);
3733 if (!info->breakoff) {
3735 if (!info->xmit_cnt) {
3736 CY_UNLOCK(info, flags);
3738 CY_LOCK(info, flags);
3745 if (break_state == -1) {
3746 retval = cyz_issue_cmd(&cy_card[info->card],
3747 (info->line) - (cy_card[info->card].first_line),
3748 C_CM_SET_BREAK, 0L);
3750 printk("cyc:cy_break (set) retval on ttyC%d was %x\n",
3751 info->line, retval);
3754 retval = cyz_issue_cmd(&cy_card[info->card],
3755 (info->line) - (cy_card[info->card].first_line),
3756 C_CM_CLR_BREAK, 0L);
3758 printk("cyc:cy_break (clr) retval on ttyC%d was %x\n",
3759 info->line, retval);
3763 CY_UNLOCK(info, flags);
3767 get_mon_info(struct cyclades_port * info, struct cyclades_monitor __user * mon)
3770 if(copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor)))
3772 info->mon.int_count = 0;
3773 info->mon.char_count = 0;
3774 info->mon.char_max = 0;
3775 info->mon.char_last = 0;
3781 set_threshold(struct cyclades_port * info, unsigned long value)
3783 void __iomem *base_addr;
3784 int card,channel,chip,index;
3785 unsigned long flags;
3788 channel = info->line - cy_card[card].first_line;
3789 if (!IS_CYC_Z(cy_card[card])) {
3792 index = cy_card[card].bus_index;
3793 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3795 info->cor3 &= ~CyREC_FIFO;
3796 info->cor3 |= value & CyREC_FIFO;
3798 CY_LOCK(info, flags);
3799 cy_writeb(base_addr+(CyCOR3<<index), info->cor3);
3800 cyy_issue_cmd(base_addr,CyCOR_CHANGE|CyCOR3ch,index);
3801 CY_UNLOCK(info, flags);
3806 }/* set_threshold */
3810 get_threshold(struct cyclades_port * info, unsigned long __user *value)
3812 void __iomem *base_addr;
3813 int card,channel,chip,index;
3817 channel = info->line - cy_card[card].first_line;
3818 if (!IS_CYC_Z(cy_card[card])) {
3821 index = cy_card[card].bus_index;
3822 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3824 tmp = cy_readb(base_addr+(CyCOR3<<index)) & CyREC_FIFO;
3825 return put_user(tmp,value);
3830 }/* get_threshold */
3834 set_default_threshold(struct cyclades_port * info, unsigned long value)
3836 info->default_threshold = value & 0x0f;
3838 }/* set_default_threshold */
3842 get_default_threshold(struct cyclades_port * info, unsigned long __user *value)
3844 return put_user(info->default_threshold,value);
3845 }/* get_default_threshold */
3849 set_timeout(struct cyclades_port * info, unsigned long value)
3851 void __iomem *base_addr;
3852 int card,channel,chip,index;
3853 unsigned long flags;
3856 channel = info->line - cy_card[card].first_line;
3857 if (!IS_CYC_Z(cy_card[card])) {
3860 index = cy_card[card].bus_index;
3861 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3863 CY_LOCK(info, flags);
3864 cy_writeb(base_addr+(CyRTPR<<index), value & 0xff);
3865 CY_UNLOCK(info, flags);
3874 get_timeout(struct cyclades_port * info, unsigned long __user *value)
3876 void __iomem *base_addr;
3877 int card,channel,chip,index;
3881 channel = info->line - cy_card[card].first_line;
3882 if (!IS_CYC_Z(cy_card[card])) {
3885 index = cy_card[card].bus_index;
3886 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
3888 tmp = cy_readb(base_addr+(CyRTPR<<index));
3889 return put_user(tmp,value);
3898 set_default_timeout(struct cyclades_port * info, unsigned long value)
3900 info->default_timeout = value & 0xff;
3902 }/* set_default_timeout */
3906 get_default_timeout(struct cyclades_port * info, unsigned long __user *value)
3908 return put_user(info->default_timeout,value);
3909 }/* get_default_timeout */
3912 * This routine allows the tty driver to implement device-
3913 * specific ioctl's. If the ioctl number passed in cmd is
3914 * not recognized by the driver, it should return ENOIOCTLCMD.
3917 cy_ioctl(struct tty_struct *tty, struct file * file,
3918 unsigned int cmd, unsigned long arg)
3920 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
3921 struct cyclades_icount cprev, cnow; /* kernel counter temps */
3922 struct serial_icounter_struct __user *p_cuser; /* user space */
3924 unsigned long flags;
3925 void __user *argp = (void __user *)arg;
3927 if (serial_paranoia_check(info, tty->name, "cy_ioctl"))
3930 #ifdef CY_DEBUG_OTHER
3931 printk("cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
3932 info->line, cmd, arg); /* */
3937 ret_val = get_mon_info(info, argp);
3940 ret_val = get_threshold(info, argp);
3943 ret_val = set_threshold(info, arg);
3945 case CYGETDEFTHRESH:
3946 ret_val = get_default_threshold(info, argp);
3948 case CYSETDEFTHRESH:
3949 ret_val = set_default_threshold(info, arg);
3952 ret_val = get_timeout(info, argp);
3955 ret_val = set_timeout(info, arg);
3957 case CYGETDEFTIMEOUT:
3958 ret_val = get_default_timeout(info, argp);
3960 case CYSETDEFTIMEOUT:
3961 ret_val = set_default_timeout(info, arg);
3964 info->rflow = (int)arg;
3968 ret_val = info->rflow;
3970 case CYSETRTSDTR_INV:
3971 info->rtsdtr_inv = (int)arg;
3974 case CYGETRTSDTR_INV:
3975 ret_val = info->rtsdtr_inv;
3978 if (copy_to_user(argp, &cy_card[info->card],
3979 sizeof (struct cyclades_card))) {
3985 case CYGETCD1400VER:
3986 ret_val = info->chip_rev;
3988 #ifndef CONFIG_CYZ_INTR
3989 case CYZSETPOLLCYCLE:
3990 cyz_polling_cycle = (arg * HZ) / 1000;
3993 case CYZGETPOLLCYCLE:
3994 ret_val = (cyz_polling_cycle * 1000) / HZ;
3996 #endif /* CONFIG_CYZ_INTR */
3998 info->closing_wait = (unsigned short)arg * HZ/100;
4002 ret_val = info->closing_wait / (HZ/100);
4005 ret_val = get_serial_info(info, argp);
4008 ret_val = set_serial_info(info, argp);
4010 case TIOCSERGETLSR: /* Get line status register */
4011 ret_val = get_lsr_info(info, argp);
4014 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
4015 * - mask passed in arg for lines of interest
4016 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
4017 * Caller should use TIOCGICOUNT to see which one it was
4020 CY_LOCK(info, flags);
4021 /* note the counters on entry */
4022 cprev = info->icount;
4023 CY_UNLOCK(info, flags);
4025 interruptible_sleep_on(&info->delta_msr_wait);
4026 /* see if a signal did it */
4027 if (signal_pending(current)) {
4028 return -ERESTARTSYS;
4031 CY_LOCK(info, flags);
4032 cnow = info->icount; /* atomic copy */
4033 CY_UNLOCK(info, flags);
4035 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
4036 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
4037 return -EIO; /* no change => error */
4039 if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
4040 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
4041 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
4042 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
4050 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
4051 * Return: write counters to the user passed counter struct
4052 * NB: both 1->0 and 0->1 transitions are counted except for
4053 * RI where only 0->1 is counted.
4056 CY_LOCK(info, flags);
4057 cnow = info->icount;
4058 CY_UNLOCK(info, flags);
4060 ret_val = put_user(cnow.cts, &p_cuser->cts);
4061 if (ret_val) return ret_val;
4062 ret_val = put_user(cnow.dsr, &p_cuser->dsr);
4063 if (ret_val) return ret_val;
4064 ret_val = put_user(cnow.rng, &p_cuser->rng);
4065 if (ret_val) return ret_val;
4066 ret_val = put_user(cnow.dcd, &p_cuser->dcd);
4067 if (ret_val) return ret_val;
4068 ret_val = put_user(cnow.rx, &p_cuser->rx);
4069 if (ret_val) return ret_val;
4070 ret_val = put_user(cnow.tx, &p_cuser->tx);
4071 if (ret_val) return ret_val;
4072 ret_val = put_user(cnow.frame, &p_cuser->frame);
4073 if (ret_val) return ret_val;
4074 ret_val = put_user(cnow.overrun, &p_cuser->overrun);
4075 if (ret_val) return ret_val;
4076 ret_val = put_user(cnow.parity, &p_cuser->parity);
4077 if (ret_val) return ret_val;
4078 ret_val = put_user(cnow.brk, &p_cuser->brk);
4079 if (ret_val) return ret_val;
4080 ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
4081 if (ret_val) return ret_val;
4085 ret_val = -ENOIOCTLCMD;
4088 #ifdef CY_DEBUG_OTHER
4089 printk(" cyc:cy_ioctl done\n");
4097 * This routine allows the tty driver to be notified when
4098 * device's termios settings have changed. Note that a
4099 * well-designed tty driver should be prepared to accept the case
4100 * where old == NULL, and try to do something rational.
4103 cy_set_termios(struct tty_struct *tty, struct termios * old_termios)
4105 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4107 #ifdef CY_DEBUG_OTHER
4108 printk("cyc:cy_set_termios ttyC%d\n", info->line);
4111 if ((tty->termios->c_cflag == old_termios->c_cflag) &&
4112 ((tty->termios->c_iflag & (IXON|IXANY)) ==
4113 (old_termios->c_iflag & (IXON|IXANY))))
4115 set_line_char(info);
4117 if ((old_termios->c_cflag & CRTSCTS) &&
4118 !(tty->termios->c_cflag & CRTSCTS)) {
4119 tty->hw_stopped = 0;
4124 * No need to wake up processes in open wait, since they
4125 * sample the CLOCAL flag once, and don't recheck it.
4126 * XXX It's not clear whether the current behavior is correct
4127 * or not. Hence, this may change.....
4129 if (!(old_termios->c_cflag & CLOCAL) &&
4130 (tty->termios->c_cflag & CLOCAL))
4131 wake_up_interruptible(&info->open_wait);
4135 } /* cy_set_termios */
4137 /* This function is used to send a high-priority XON/XOFF character to
4141 cy_send_xchar (struct tty_struct *tty, char ch)
4143 struct cyclades_port *info = (struct cyclades_port *) tty->driver_data;
4146 if (serial_paranoia_check (info, tty->name, "cy_send_xchar"))
4155 channel = info->line - cy_card[card].first_line;
4157 if (IS_CYC_Z (cy_card[card])) {
4158 if (ch == STOP_CHAR (tty))
4159 cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXOFF, 0L);
4160 else if (ch == START_CHAR (tty))
4161 cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXON, 0L);
4165 /* This routine is called by the upper-layer tty layer to signal
4166 that incoming characters should be throttled because the input
4167 buffers are close to full.
4170 cy_throttle(struct tty_struct * tty)
4172 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4173 unsigned long flags;
4174 void __iomem *base_addr;
4175 int card,chip,channel,index;
4177 #ifdef CY_DEBUG_THROTTLE
4180 printk("cyc:throttle %s: %d....ttyC%d\n",
4182 tty->ldisc.chars_in_buffer(tty), info->line);
4185 if (serial_paranoia_check(info, tty->name, "cy_throttle")){
4192 if (!IS_CYC_Z (cy_card[card]))
4193 cy_send_xchar (tty, STOP_CHAR (tty));
4198 if (tty->termios->c_cflag & CRTSCTS) {
4199 channel = info->line - cy_card[card].first_line;
4200 if (!IS_CYC_Z(cy_card[card])) {
4203 index = cy_card[card].bus_index;
4204 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
4206 CY_LOCK(info, flags);
4207 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
4208 if (info->rtsdtr_inv) {
4209 cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR);
4211 cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS);
4213 CY_UNLOCK(info, flags);
4224 * This routine notifies the tty driver that it should signal
4225 * that characters can now be sent to the tty without fear of
4226 * overrunning the input buffers of the line disciplines.
4229 cy_unthrottle(struct tty_struct * tty)
4231 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4232 unsigned long flags;
4233 void __iomem *base_addr;
4234 int card,chip,channel,index;
4236 #ifdef CY_DEBUG_THROTTLE
4239 printk("cyc:unthrottle %s: %d....ttyC%d\n",
4241 tty->ldisc.chars_in_buffer(tty), info->line);
4244 if (serial_paranoia_check(info, tty->name, "cy_unthrottle")){
4252 cy_send_xchar (tty, START_CHAR (tty));
4255 if (tty->termios->c_cflag & CRTSCTS) {
4257 channel = info->line - cy_card[card].first_line;
4258 if (!IS_CYC_Z(cy_card[card])) {
4261 index = cy_card[card].bus_index;
4262 base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index);
4264 CY_LOCK(info, flags);
4265 cy_writeb(base_addr+(CyCAR<<index), (u_char)channel);
4266 if (info->rtsdtr_inv) {
4267 cy_writeb(base_addr+(CyMSVR2<<index), CyDTR);
4269 cy_writeb(base_addr+(CyMSVR1<<index), CyRTS);
4271 CY_UNLOCK(info, flags);
4278 } /* cy_unthrottle */
4281 /* cy_start and cy_stop provide software output flow control as a
4282 function of XON/XOFF, software CTS, and other such stuff.
4285 cy_stop(struct tty_struct *tty)
4287 struct cyclades_card *cinfo;
4288 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4289 void __iomem *base_addr;
4290 int chip,channel,index;
4291 unsigned long flags;
4293 #ifdef CY_DEBUG_OTHER
4294 printk("cyc:cy_stop ttyC%d\n", info->line); /* */
4297 if (serial_paranoia_check(info, tty->name, "cy_stop"))
4300 cinfo = &cy_card[info->card];
4301 channel = info->line - cinfo->first_line;
4302 if (!IS_CYC_Z(*cinfo)) {
4303 index = cinfo->bus_index;
4306 base_addr = cy_card[info->card].base_addr + (cy_chip_offset[chip]<<index);
4308 CY_LOCK(info, flags);
4309 cy_writeb(base_addr+(CyCAR<<index),
4310 (u_char)(channel & 0x0003)); /* index channel */
4311 cy_writeb(base_addr+(CySRER<<index),
4312 cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy);
4313 CY_UNLOCK(info, flags);
4323 cy_start(struct tty_struct *tty)
4325 struct cyclades_card *cinfo;
4326 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4327 void __iomem *base_addr;
4328 int chip,channel,index;
4329 unsigned long flags;
4331 #ifdef CY_DEBUG_OTHER
4332 printk("cyc:cy_start ttyC%d\n", info->line); /* */
4335 if (serial_paranoia_check(info, tty->name, "cy_start"))
4338 cinfo = &cy_card[info->card];
4339 channel = info->line - cinfo->first_line;
4340 index = cinfo->bus_index;
4341 if (!IS_CYC_Z(*cinfo)) {
4344 base_addr = cy_card[info->card].base_addr + (cy_chip_offset[chip]<<index);
4346 CY_LOCK(info, flags);
4347 cy_writeb(base_addr+(CyCAR<<index),
4348 (u_char)(channel & 0x0003)); /* index channel */
4349 cy_writeb(base_addr+(CySRER<<index),
4350 cy_readb(base_addr+(CySRER<<index)) | CyTxRdy);
4351 CY_UNLOCK(info, flags);
4361 cy_flush_buffer(struct tty_struct *tty)
4363 struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
4364 int card, channel, retval;
4365 unsigned long flags;
4368 printk("cyc:cy_flush_buffer ttyC%d\n", info->line); /* */
4371 if (serial_paranoia_check(info, tty->name, "cy_flush_buffer"))
4375 channel = (info->line) - (cy_card[card].first_line);
4377 CY_LOCK(info, flags);
4378 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
4379 CY_UNLOCK(info, flags);
4381 if (IS_CYC_Z(cy_card[card])) { /* If it is a Z card, flush the on-board
4383 CY_LOCK(info, flags);
4384 retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_TX, 0L);
4386 printk("cyc: flush_buffer retval on ttyC%d was %x\n",
4387 info->line, retval);
4389 CY_UNLOCK(info, flags);
4392 wake_up_interruptible(&tty->write_wait);
4393 } /* cy_flush_buffer */
4397 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
4400 cy_hangup(struct tty_struct *tty)
4402 struct cyclades_port * info = (struct cyclades_port *)tty->driver_data;
4404 #ifdef CY_DEBUG_OTHER
4405 printk("cyc:cy_hangup ttyC%d\n", info->line); /* */
4408 if (serial_paranoia_check(info, tty->name, "cy_hangup"))
4411 cy_flush_buffer(tty);
4415 #ifdef CY_DEBUG_COUNT
4416 printk("cyc:cy_hangup (%d): setting count to 0\n", current->pid);
4419 info->flags &= ~ASYNC_NORMAL_ACTIVE;
4420 wake_up_interruptible(&info->open_wait);
4425 * ---------------------------------------------------------------------
4426 * cy_init() and friends
4428 * cy_init() is called at boot-time to initialize the serial driver.
4429 * ---------------------------------------------------------------------
4432 /* initialize chips on Cyclom-Y card -- return number of valid
4433 chips (which is number of ports/4) */
4434 static unsigned short __init
4435 cyy_init_card(void __iomem *true_base_addr,int index)
4437 unsigned int chip_number;
4438 void __iomem *base_addr;
4440 cy_writeb(true_base_addr+(Cy_HwReset<<index), 0);
4441 /* Cy_HwReset is 0x1400 */
4442 cy_writeb(true_base_addr+(Cy_ClrIntr<<index), 0);
4443 /* Cy_ClrIntr is 0x1800 */
4446 for(chip_number=0; chip_number<CyMAX_CHIPS_PER_CARD; chip_number++){
4447 base_addr = true_base_addr + (cy_chip_offset[chip_number]<<index);
4449 if(cy_readb(base_addr+(CyCCR<<index)) != 0x00){
4451 printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
4452 chip_number, (unsigned long)base_addr);
4457 cy_writeb(base_addr+(CyGFRCR<<index), 0);
4460 /* The Cyclom-16Y does not decode address bit 9 and therefore
4461 cannot distinguish between references to chip 0 and a non-
4462 existent chip 4. If the preceding clearing of the supposed
4463 chip 4 GFRCR register appears at chip 0, there is no chip 4
4464 and this must be a Cyclom-16Y, not a Cyclom-32Ye.
4466 if (chip_number == 4
4467 && cy_readb(true_base_addr
4468 + (cy_chip_offset[0]<<index)
4469 + (CyGFRCR<<index)) == 0){
4473 cy_writeb(base_addr+(CyCCR<<index), CyCHIP_RESET);
4476 if(cy_readb(base_addr+(CyGFRCR<<index)) == 0x00){
4478 printk(" chip #%d at %#6lx is not responding ",
4479 chip_number, (unsigned long)base_addr);
4480 printk("(GFRCR stayed 0)\n",
4484 if((0xf0 & (cy_readb(base_addr+(CyGFRCR<<index)))) != 0x40){
4486 printk(" chip #%d at %#6lx is not valid (GFRCR == %#2x)\n",
4487 chip_number, (unsigned long)base_addr,
4488 base_addr[CyGFRCR<<index]);
4492 cy_writeb(base_addr+(CyGCR<<index), CyCH0_SERIAL);
4493 if (cy_readb(base_addr+(CyGFRCR<<index)) >= CD1400_REV_J){
4494 /* It is a CD1400 rev. J or later */
4495 /* Impossible to reach 5ms with this chip.
4496 Changed to 2ms instead (f = 500 Hz). */
4497 cy_writeb(base_addr+(CyPPR<<index), CyCLOCK_60_2MS);
4500 cy_writeb(base_addr+(CyPPR<<index), CyCLOCK_25_5MS);
4504 printk(" chip #%d at %#6lx is rev 0x%2x\n",
4505 chip_number, (unsigned long)base_addr,
4506 cy_readb(base_addr+(CyGFRCR<<index)));
4510 } /* cyy_init_card */
4513 * ---------------------------------------------------------------------
4514 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
4515 * sets global variables and return the number of ISA boards found.
4516 * ---------------------------------------------------------------------
4522 unsigned short cy_isa_irq,nboard;
4523 void __iomem *cy_isa_address;
4524 unsigned short i,j,cy_isa_nchan;
4532 /* Check for module parameters */
4533 for(i = 0 ; i < NR_CARDS; i++) {
4534 if (maddr[i] || i) {
4536 cy_isa_addresses[i] = maddr[i];
4543 /* scan the address table probing for Cyclom-Y/ISA boards */
4544 for (i = 0 ; i < NR_ISA_ADDRS ; i++) {
4545 unsigned int isa_address = cy_isa_addresses[i];
4546 if (isa_address == 0x0000) {
4550 /* probe for CD1400... */
4551 cy_isa_address = ioremap(isa_address, CyISA_Ywin);
4552 cy_isa_nchan = CyPORTS_PER_CHIP *
4553 cyy_init_card(cy_isa_address,0);
4554 if (cy_isa_nchan == 0) {
4559 if (isparam && irq[i])
4560 cy_isa_irq = irq[i];
4563 /* find out the board's irq by probing */
4564 cy_isa_irq = detect_isa_irq(cy_isa_address);
4565 if (cy_isa_irq == 0) {
4566 printk("Cyclom-Y/ISA found at 0x%lx ",
4567 (unsigned long) cy_isa_address);
4568 printk("but the IRQ could not be detected.\n");
4572 if((cy_next_channel+cy_isa_nchan) > NR_PORTS) {
4573 printk("Cyclom-Y/ISA found at 0x%lx ",
4574 (unsigned long) cy_isa_address);
4575 printk("but no more channels are available.\n");
4576 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
4579 /* fill the next cy_card structure available */
4580 for (j = 0 ; j < NR_CARDS ; j++) {
4581 if (cy_card[j].base_addr == 0) break;
4583 if (j == NR_CARDS) { /* no more cy_cards available */
4584 printk("Cyclom-Y/ISA found at 0x%lx ",
4585 (unsigned long) cy_isa_address);
4586 printk("but no more cards can be used .\n");
4587 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4592 if(request_irq(cy_isa_irq, cyy_interrupt,
4593 IRQF_DISABLED, "Cyclom-Y", &cy_card[j]))
4595 printk("Cyclom-Y/ISA found at 0x%lx ",
4596 (unsigned long) cy_isa_address);
4597 printk("but could not allocate IRQ#%d.\n",
4603 cy_card[j].base_addr = cy_isa_address;
4604 cy_card[j].ctl_addr = NULL;
4605 cy_card[j].irq = (int) cy_isa_irq;
4606 cy_card[j].bus_index = 0;
4607 cy_card[j].first_line = cy_next_channel;
4608 cy_card[j].num_chips = cy_isa_nchan/4;
4612 printk("Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d, ",
4613 j+1, (unsigned long) cy_isa_address,
4614 (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)),
4616 printk("%d channels starting from port %d.\n",
4617 cy_isa_nchan, cy_next_channel);
4618 cy_next_channel += cy_isa_nchan;
4623 #endif /* CONFIG_ISA */
4624 } /* cy_detect_isa */
4627 plx_init(void __iomem *addr, uclong initctl)
4630 cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x40000000);
4632 cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x40000000);
4634 /* Reload Config. Registers from EEPROM */
4635 cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x20000000);
4637 cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x20000000);
4641 * ---------------------------------------------------------------------
4642 * cy_detect_pci() - Test PCI bus presence and Cyclom-Ye/PCI.
4643 * sets global variables and return the number of PCI boards found.
4644 * ---------------------------------------------------------------------
4651 struct pci_dev *pdev = NULL;
4652 unsigned char cyy_rev_id;
4653 unsigned char cy_pci_irq = 0;
4654 uclong cy_pci_phys0, cy_pci_phys2;
4655 void __iomem *cy_pci_addr0, *cy_pci_addr2;
4656 unsigned short i,j,cy_pci_nchan, plx_ver;
4657 unsigned short device_id,dev_index = 0;
4660 void __iomem *Ze_addr0[NR_CARDS], *Ze_addr2[NR_CARDS];
4661 uclong Ze_phys0[NR_CARDS], Ze_phys2[NR_CARDS];
4662 unsigned char Ze_irq[NR_CARDS];
4663 struct pci_dev *Ze_pdev[NR_CARDS];
4665 for (i = 0; i < NR_CARDS; i++) {
4666 /* look for a Cyclades card by vendor and device id */
4667 while((device_id = cy_pci_dev_id[dev_index]) != 0) {
4668 if((pdev = pci_get_device(PCI_VENDOR_ID_CYCLADES,
4669 device_id, pdev)) == NULL) {
4670 dev_index++; /* try next device id */
4672 break; /* found a board */
4679 if (pci_enable_device(pdev))
4682 /* read PCI configuration area */
4683 cy_pci_irq = pdev->irq;
4684 cy_pci_phys0 = pci_resource_start(pdev, 0);
4685 cy_pci_phys2 = pci_resource_start(pdev, 2);
4686 pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id);
4688 device_id &= ~PCI_DEVICE_ID_MASK;
4690 if ((device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo)
4691 || (device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi)){
4693 printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ",
4694 pdev->bus->number, pdev->devfn);
4695 printk("rev_id=%d) IRQ%d\n",
4696 cyy_rev_id, (int)cy_pci_irq);
4697 printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n",
4698 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4701 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
4702 printk(" Warning: PCI I/O bit incorrectly set. "
4703 "Ignoring it...\n");
4704 pdev->resource[2].flags &= ~IORESOURCE_IO;
4707 /* Although we don't use this I/O region, we should
4708 request it from the kernel anyway, to avoid problems
4709 with other drivers accessing it. */
4710 if (pci_request_regions(pdev, "Cyclom-Y") != 0) {
4711 printk(KERN_ERR "cyclades: failed to reserve PCI resources\n");
4715 #if defined(__alpha__)
4716 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
4717 printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ",
4718 pdev->bus->number, pdev->devfn);
4719 printk("rev_id=%d) IRQ%d\n",
4720 cyy_rev_id, (int)cy_pci_irq);
4721 printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n",
4722 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4723 printk("Cyclom-Y/PCI not supported for low addresses in "
4724 "Alpha systems.\n");
4729 cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Yctl);
4730 cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Ywin);
4733 printk("Cyclom-Y/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
4734 (u_long)cy_pci_addr2, (u_long)cy_pci_addr0);
4736 cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP *
4737 cyy_init_card(cy_pci_addr2, 1));
4738 if(cy_pci_nchan == 0) {
4739 printk("Cyclom-Y PCI host card with ");
4740 printk("no Serial-Modules at 0x%lx.\n",
4741 (ulong) cy_pci_phys2);
4745 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
4746 printk("Cyclom-Y/PCI found at 0x%lx ",
4747 (ulong) cy_pci_phys2);
4748 printk("but no channels are available.\n");
4749 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
4752 /* fill the next cy_card structure available */
4753 for (j = 0 ; j < NR_CARDS ; j++) {
4754 if (cy_card[j].base_addr == 0) break;
4756 if (j == NR_CARDS) { /* no more cy_cards available */
4757 printk("Cyclom-Y/PCI found at 0x%lx ",
4758 (ulong) cy_pci_phys2);
4759 printk("but no more cards can be used.\n");
4760 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4765 if(request_irq(cy_pci_irq, cyy_interrupt,
4766 IRQF_SHARED, "Cyclom-Y", &cy_card[j]))
4768 printk("Cyclom-Y/PCI found at 0x%lx ",
4769 (ulong) cy_pci_phys2);
4770 printk("but could not allocate IRQ%d.\n",
4776 cy_card[j].base_phys = (ulong)cy_pci_phys2;
4777 cy_card[j].ctl_phys = (ulong)cy_pci_phys0;
4778 cy_card[j].base_addr = cy_pci_addr2;
4779 cy_card[j].ctl_addr = cy_pci_addr0;
4780 cy_card[j].irq = (int) cy_pci_irq;
4781 cy_card[j].bus_index = 1;
4782 cy_card[j].first_line = cy_next_channel;
4783 cy_card[j].num_chips = cy_pci_nchan/4;
4784 cy_card[j].pdev = pdev;
4786 /* enable interrupts in the PCI interface */
4787 plx_ver = cy_readb(cy_pci_addr2 + CyPLX_VER) & 0x0f;
4791 cy_writeb(cy_pci_addr0+0x4c, 0x43);
4796 default: /* Old boards, use PLX_9060 */
4798 plx_init(cy_pci_addr0, 0x6c);
4799 /* For some yet unknown reason, once the PLX9060 reloads
4800 the EEPROM, the IRQ is lost and, thus, we have to
4801 re-write it to the PCI config. registers.
4802 This will remain here until we find a permanent fix. */
4803 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq);
4805 cy_writew(cy_pci_addr0+0x68,
4806 cy_readw(cy_pci_addr0+0x68)|0x0900);
4811 printk("Cyclom-Y/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
4813 (ulong)cy_pci_phys2,
4814 (ulong)(cy_pci_phys2 + CyPCI_Ywin - 1),
4816 printk("%d channels starting from port %d.\n",
4817 cy_pci_nchan, cy_next_channel);
4819 cy_next_channel += cy_pci_nchan;
4820 }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo){
4822 printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ",
4823 pdev->bus->number, pdev->devfn);
4824 printk("rev_id=%d) IRQ%d\n",
4825 cyy_rev_id, (int)cy_pci_irq);
4826 printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n",
4827 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4828 printk("Cyclades-Z/PCI not supported for low addresses\n");
4830 }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi){
4832 printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ",
4833 pdev->bus->number, pdev->devfn);
4834 printk("rev_id=%d) IRQ%d\n",
4835 cyy_rev_id, (int)cy_pci_irq);
4836 printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n",
4837 (ulong)cy_pci_phys2, (ulong)cy_pci_phys0);
4839 cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Zctl);
4841 /* Disable interrupts on the PLX before resetting it */
4842 cy_writew(cy_pci_addr0+0x68,
4843 cy_readw(cy_pci_addr0+0x68) & ~0x0900);
4845 plx_init(cy_pci_addr0, 0x6c);
4846 /* For some yet unknown reason, once the PLX9060 reloads
4847 the EEPROM, the IRQ is lost and, thus, we have to
4848 re-write it to the PCI config. registers.
4849 This will remain here until we find a permanent fix. */
4850 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq);
4852 mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *)
4853 cy_pci_addr0)->mail_box_0);
4855 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
4856 printk(" Warning: PCI I/O bit incorrectly set. "
4857 "Ignoring it...\n");
4858 pdev->resource[2].flags &= ~IORESOURCE_IO;
4861 /* Although we don't use this I/O region, we should
4862 request it from the kernel anyway, to avoid problems
4863 with other drivers accessing it. */
4864 if (pci_request_regions(pdev, "Cyclades-Z") != 0) {
4865 printk(KERN_ERR "cyclades: failed to reserve PCI resources\n");
4869 if (mailbox == ZE_V1) {
4870 cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Ze_win);
4871 if (ZeIndex == NR_CARDS) {
4872 printk("Cyclades-Ze/PCI found at 0x%lx ",
4873 (ulong)cy_pci_phys2);
4874 printk("but no more cards can be used.\n");
4875 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4877 Ze_phys0[ZeIndex] = cy_pci_phys0;
4878 Ze_phys2[ZeIndex] = cy_pci_phys2;
4879 Ze_addr0[ZeIndex] = cy_pci_addr0;
4880 Ze_addr2[ZeIndex] = cy_pci_addr2;
4881 Ze_irq[ZeIndex] = cy_pci_irq;
4882 Ze_pdev[ZeIndex] = pdev;
4888 cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Zwin);
4892 printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
4893 (ulong)cy_pci_addr2, (ulong)cy_pci_addr0);
4894 if (mailbox == ZO_V1) {
4895 cy_writel(&((struct RUNTIME_9060 *)
4896 (cy_pci_addr0))->loc_addr_base, WIN_CREG);
4898 printk("Cyclades-8Zo/PCI: FPGA id %lx, ver %lx\n",
4899 (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *)
4900 (cy_pci_addr2))->fpga_id)),
4901 (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *)
4902 (cy_pci_addr2))->fpga_version)));
4903 cy_writel(&((struct RUNTIME_9060 *)
4904 (cy_pci_addr0))->loc_addr_base, WIN_RAM);
4906 printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n");
4909 /* The following clears the firmware id word. This ensures
4910 that the driver will not attempt to talk to the board
4911 until it has been properly initialized.
4914 if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
4915 cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L);
4917 /* This must be a Cyclades-8Zo/PCI. The extendable
4918 version will have a different device_id and will
4919 be allocated its maximum number of ports. */
4922 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
4923 printk("Cyclades-8Zo/PCI found at 0x%lx ",
4924 (ulong)cy_pci_phys2);
4925 printk("but no channels are available.\n");
4926 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
4930 /* fill the next cy_card structure available */
4931 for (j = 0 ; j < NR_CARDS ; j++) {
4932 if (cy_card[j].base_addr == 0) break;
4934 if (j == NR_CARDS) { /* no more cy_cards available */
4935 printk("Cyclades-8Zo/PCI found at 0x%lx ",
4936 (ulong)cy_pci_phys2);
4937 printk("but no more cards can be used.\n");
4938 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
4942 #ifdef CONFIG_CYZ_INTR
4943 /* allocate IRQ only if board has an IRQ */
4944 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
4945 if(request_irq(cy_pci_irq, cyz_interrupt,
4946 IRQF_SHARED, "Cyclades-Z", &cy_card[j]))
4948 printk("Cyclom-8Zo/PCI found at 0x%lx ",
4949 (ulong) cy_pci_phys2);
4950 printk("but could not allocate IRQ%d.\n",
4955 #endif /* CONFIG_CYZ_INTR */
4959 cy_card[j].base_phys = cy_pci_phys2;
4960 cy_card[j].ctl_phys = cy_pci_phys0;
4961 cy_card[j].base_addr = cy_pci_addr2;
4962 cy_card[j].ctl_addr = cy_pci_addr0;
4963 cy_card[j].irq = (int) cy_pci_irq;
4964 cy_card[j].bus_index = 1;
4965 cy_card[j].first_line = cy_next_channel;
4966 cy_card[j].num_chips = -1;
4967 cy_card[j].pdev = pdev;
4970 #ifdef CONFIG_CYZ_INTR
4971 /* don't report IRQ if board is no IRQ */
4972 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) )
4973 printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
4974 j+1,(ulong)cy_pci_phys2,
4975 (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1),
4978 #endif /* CONFIG_CYZ_INTR */
4979 printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, ",
4980 j+1,(ulong)cy_pci_phys2,
4981 (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1));
4983 printk("%d channels starting from port %d.\n",
4984 cy_pci_nchan,cy_next_channel);
4985 cy_next_channel += cy_pci_nchan;
4989 for (; ZeIndex != 0 && i < NR_CARDS; i++) {
4990 cy_pci_phys0 = Ze_phys0[0];
4991 cy_pci_phys2 = Ze_phys2[0];
4992 cy_pci_addr0 = Ze_addr0[0];
4993 cy_pci_addr2 = Ze_addr2[0];
4994 cy_pci_irq = Ze_irq[0];
4996 for (j = 0 ; j < ZeIndex-1 ; j++) {
4997 Ze_phys0[j] = Ze_phys0[j+1];
4998 Ze_phys2[j] = Ze_phys2[j+1];
4999 Ze_addr0[j] = Ze_addr0[j+1];
5000 Ze_addr2[j] = Ze_addr2[j+1];
5001 Ze_irq[j] = Ze_irq[j+1];
5002 Ze_pdev[j] = Ze_pdev[j+1];
5005 mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *)
5006 cy_pci_addr0)->mail_box_0);
5008 printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n",
5009 (ulong)cy_pci_addr2, (ulong)cy_pci_addr0);
5010 printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n");
5013 /* This must be the new Cyclades-Ze/PCI. */
5014 cy_pci_nchan = ZE_V1_NPORTS;
5016 if((cy_next_channel+cy_pci_nchan) > NR_PORTS) {
5017 printk("Cyclades-Ze/PCI found at 0x%lx ",
5018 (ulong)cy_pci_phys2);
5019 printk("but no channels are available.\n");
5020 printk("Change NR_PORTS in cyclades.c and recompile kernel.\n");
5024 /* fill the next cy_card structure available */
5025 for (j = 0 ; j < NR_CARDS ; j++) {
5026 if (cy_card[j].base_addr == 0) break;
5028 if (j == NR_CARDS) { /* no more cy_cards available */
5029 printk("Cyclades-Ze/PCI found at 0x%lx ",
5030 (ulong)cy_pci_phys2);
5031 printk("but no more cards can be used.\n");
5032 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5036 #ifdef CONFIG_CYZ_INTR
5037 /* allocate IRQ only if board has an IRQ */
5038 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
5039 if(request_irq(cy_pci_irq, cyz_interrupt,
5040 IRQF_SHARED, "Cyclades-Z", &cy_card[j]))
5042 printk("Cyclom-Ze/PCI found at 0x%lx ",
5043 (ulong) cy_pci_phys2);
5044 printk("but could not allocate IRQ%d.\n",
5049 #endif /* CONFIG_CYZ_INTR */
5052 cy_card[j].base_phys = cy_pci_phys2;
5053 cy_card[j].ctl_phys = cy_pci_phys0;
5054 cy_card[j].base_addr = cy_pci_addr2;
5055 cy_card[j].ctl_addr = cy_pci_addr0;
5056 cy_card[j].irq = (int) cy_pci_irq;
5057 cy_card[j].bus_index = 1;
5058 cy_card[j].first_line = cy_next_channel;
5059 cy_card[j].num_chips = -1;
5060 cy_card[j].pdev = pdev;
5063 #ifdef CONFIG_CYZ_INTR
5064 /* don't report IRQ if board is no IRQ */
5065 if( (cy_pci_irq != 0) && (cy_pci_irq != 255) )
5066 printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, IRQ%d, ",
5067 j+1,(ulong)cy_pci_phys2,
5068 (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1),
5071 #endif /* CONFIG_CYZ_INTR */
5072 printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, ",
5073 j+1,(ulong)cy_pci_phys2,
5074 (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1));
5076 printk("%d channels starting from port %d.\n",
5077 cy_pci_nchan,cy_next_channel);
5078 cy_next_channel += cy_pci_nchan;
5081 printk("Cyclades-Ze/PCI found at 0x%x ",
5082 (unsigned int) Ze_phys2[0]);
5083 printk("but no more cards can be used.\n");
5084 printk("Change NR_CARDS in cyclades.c and recompile kernel.\n");
5089 #endif /* ifdef CONFIG_PCI */
5090 } /* cy_detect_pci */
5094 * This routine prints out the appropriate serial driver version number
5095 * and identifies which options were configured into this driver.
5100 char *rcsvers, *rcsdate, *tmp;
5101 rcsvers = strchr(rcsid, ' '); rcsvers++;
5102 tmp = strchr(rcsvers, ' '); *tmp++ = '\0';
5103 rcsdate = strchr(tmp, ' '); rcsdate++;
5104 tmp = strrchr(rcsdate, ' '); *tmp = '\0';
5105 printk("Cyclades driver %s %s\n",
5107 printk(" built %s %s\n",
5108 __DATE__, __TIME__);
5109 } /* show_version */
5112 cyclades_get_proc_info(char *buf, char **start, off_t offset, int length,
5113 int *eof, void *data)
5115 struct cyclades_port *info;
5121 __u32 cur_jifs = jiffies;
5123 size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn IdleIn Overruns Ldisc\n");
5128 /* Output one line for each known port */
5129 for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) {
5133 size = sprintf(buf+len,
5134 "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n",
5136 JIFFIES_DIFF(info->idle_stats.in_use, cur_jifs) / HZ,
5137 info->idle_stats.xmit_bytes,
5138 JIFFIES_DIFF(info->idle_stats.xmit_idle, cur_jifs) / HZ,
5139 info->idle_stats.recv_bytes,
5140 JIFFIES_DIFF(info->idle_stats.recv_idle, cur_jifs) / HZ,
5141 info->idle_stats.overruns,
5142 (long) info->tty->ldisc.num);
5144 size = sprintf(buf+len,
5145 "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n",
5146 info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
5154 if (pos > offset + length)
5159 *start = buf + (offset - begin); /* Start of wanted data */
5160 len -= (offset - begin); /* Start slop */
5162 len = length; /* Ending slop */
5168 /* The serial driver boot-time initialization code!
5169 Hardware I/O ports are mapped to character special devices on a
5170 first found, first allocated manner. That is, this code searches
5171 for Cyclom cards in the system. As each is found, it is probed
5172 to discover how many chips (and thus how many ports) are present.
5173 These ports are mapped to the tty ports 32 and upward in monotonic
5174 fashion. If an 8-port card is replaced with a 16-port card, the
5175 port mapping on a following card will shift.
5177 This approach is different from what is used in the other serial
5178 device driver because the Cyclom is more properly a multiplexer,
5179 not just an aggregation of serial ports on one card.
5181 If there are more cards with more ports than have been
5182 statically allocated above, a warning is printed and the
5183 extra ports are ignored.
5186 static const struct tty_operations cy_ops = {
5190 .put_char = cy_put_char,
5191 .flush_chars = cy_flush_chars,
5192 .write_room = cy_write_room,
5193 .chars_in_buffer = cy_chars_in_buffer,
5194 .flush_buffer = cy_flush_buffer,
5196 .throttle = cy_throttle,
5197 .unthrottle = cy_unthrottle,
5198 .set_termios = cy_set_termios,
5201 .hangup = cy_hangup,
5202 .break_ctl = cy_break,
5203 .wait_until_sent = cy_wait_until_sent,
5204 .read_proc = cyclades_get_proc_info,
5205 .tiocmget = cy_tiocmget,
5206 .tiocmset = cy_tiocmset,
5212 struct cyclades_port *info;
5213 struct cyclades_card *cinfo;
5214 int number_z_boards = 0;
5215 int board,port,i,index;
5216 unsigned long mailbox;
5217 unsigned short chip_number;
5220 cy_serial_driver = alloc_tty_driver(NR_PORTS);
5221 if (!cy_serial_driver)
5225 /* Initialize the tty_driver structure */
5227 cy_serial_driver->owner = THIS_MODULE;
5228 cy_serial_driver->driver_name = "cyclades";
5229 cy_serial_driver->name = "ttyC";
5230 cy_serial_driver->major = CYCLADES_MAJOR;
5231 cy_serial_driver->minor_start = 0;
5232 cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
5233 cy_serial_driver->subtype = SERIAL_TYPE_NORMAL;
5234 cy_serial_driver->init_termios = tty_std_termios;
5235 cy_serial_driver->init_termios.c_cflag =
5236 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
5237 cy_serial_driver->flags = TTY_DRIVER_REAL_RAW;
5238 tty_set_operations(cy_serial_driver, &cy_ops);
5240 if (tty_register_driver(cy_serial_driver))
5241 panic("Couldn't register Cyclades serial driver\n");
5243 for (i = 0; i < NR_CARDS; i++) {
5244 /* base_addr=0 indicates board not found */
5245 cy_card[i].base_addr = NULL;
5248 /* the code below is responsible to find the boards. Each different
5249 type of board has its own detection routine. If a board is found,
5250 the next cy_card structure available is set by the detection
5251 routine. These functions are responsible for checking the
5252 availability of cy_card and cy_port data structures and updating
5253 the cy_next_channel. */
5255 /* look for isa boards */
5256 cy_isa_nboard = cy_detect_isa();
5258 /* look for pci boards */
5259 cy_pci_nboard = cy_detect_pci();
5261 cy_nboard = cy_isa_nboard + cy_pci_nboard;
5263 /* invalidate remaining cy_card structures */
5264 for (i = 0 ; i < NR_CARDS ; i++) {
5265 if (cy_card[i].base_addr == 0) {
5266 cy_card[i].first_line = -1;
5267 cy_card[i].ctl_addr = NULL;
5269 cy_card[i].bus_index = 0;
5270 cy_card[i].first_line = 0;
5271 cy_card[i].num_chips = 0;
5274 /* invalidate remaining cy_port structures */
5275 for (i = cy_next_channel ; i < NR_PORTS ; i++) {
5276 cy_port[i].line = -1;
5277 cy_port[i].magic = -1;
5280 /* initialize per-port data structures for each valid board found */
5281 for (board = 0 ; board < cy_nboard ; board++) {
5282 cinfo = &cy_card[board];
5283 if (cinfo->num_chips == -1) { /* Cyclades-Z */
5285 mailbox = cy_readl(&((struct RUNTIME_9060 __iomem *)
5286 cy_card[board].ctl_addr)->mail_box_0);
5287 nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8;
5288 cinfo->intr_enabled = 0;
5289 cinfo->nports = 0; /* Will be correctly set later, after
5291 spin_lock_init(&cinfo->card_lock);
5292 for (port = cinfo->first_line ;
5293 port < cinfo->first_line + nports;
5296 info = &cy_port[port];
5297 info->magic = CYCLADES_MAGIC;
5298 info->type = PORT_STARTECH;
5302 info->flags = STD_COM_FLAGS;
5304 if (mailbox == ZO_V1)
5305 info->xmit_fifo_size = CYZ_FIFO_SIZE;
5307 info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
5317 info->custom_divisor = 0;
5318 info->close_delay = 5*HZ/10;
5319 info->closing_wait = CLOSING_WAIT_DELAY;
5320 info->icount.cts = info->icount.dsr =
5321 info->icount.rng = info->icount.dcd = 0;
5322 info->icount.rx = info->icount.tx = 0;
5323 info->icount.frame = info->icount.parity = 0;
5324 info->icount.overrun = info->icount.brk = 0;
5328 info->blocked_open = 0;
5329 info->default_threshold = 0;
5330 info->default_timeout = 0;
5331 INIT_WORK(&info->tqueue, do_softint, info);
5332 init_waitqueue_head(&info->open_wait);
5333 init_waitqueue_head(&info->close_wait);
5334 init_waitqueue_head(&info->shutdown_wait);
5335 init_waitqueue_head(&info->delta_msr_wait);
5338 info->read_status_mask = 0;
5340 /* Bentson's vars */
5341 info->jiffies[0] = 0;
5342 info->jiffies[1] = 0;
5343 info->jiffies[2] = 0;
5344 info->rflush_count = 0;
5345 #ifdef CONFIG_CYZ_INTR
5346 init_timer(&cyz_rx_full_timer[port]);
5347 cyz_rx_full_timer[port].function = NULL;
5351 }else{ /* Cyclom-Y of some kind*/
5352 index = cinfo->bus_index;
5353 spin_lock_init(&cinfo->card_lock);
5354 cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips;
5355 for (port = cinfo->first_line ;
5356 port < cinfo->first_line + cinfo->nports ;
5359 info = &cy_port[port];
5360 info->magic = CYCLADES_MAGIC;
5361 info->type = PORT_CIRRUS;
5364 info->flags = STD_COM_FLAGS;
5366 info->xmit_fifo_size = CyMAX_CHAR_FIFO;
5367 info->cor1 = CyPARITY_NONE|Cy_1_STOP|Cy_8_BITS;
5369 info->cor3 = 0x08; /* _very_ small rcv threshold */
5372 info->custom_divisor = 0;
5373 info->close_delay = 5*HZ/10;
5374 info->closing_wait = CLOSING_WAIT_DELAY;
5375 info->icount.cts = info->icount.dsr =
5376 info->icount.rng = info->icount.dcd = 0;
5377 info->icount.rx = info->icount.tx = 0;
5378 info->icount.frame = info->icount.parity = 0;
5379 info->icount.overrun = info->icount.brk = 0;
5380 chip_number = (port - cinfo->first_line) / 4;
5381 if ((info->chip_rev =
5382 cy_readb(cinfo->base_addr +
5383 (cy_chip_offset[chip_number]<<index) +
5384 (CyGFRCR<<index))) >= CD1400_REV_J) {
5385 /* It is a CD1400 rev. J or later */
5386 info->tbpr = baud_bpr_60[13]; /* Tx BPR */
5387 info->tco = baud_co_60[13]; /* Tx CO */
5388 info->rbpr = baud_bpr_60[13]; /* Rx BPR */
5389 info->rco = baud_co_60[13]; /* Rx CO */
5391 info->rtsdtr_inv = 1;
5393 info->tbpr = baud_bpr_25[13]; /* Tx BPR */
5394 info->tco = baud_co_25[13]; /* Tx CO */
5395 info->rbpr = baud_bpr_25[13]; /* Rx BPR */
5396 info->rco = baud_co_25[13]; /* Rx CO */
5398 info->rtsdtr_inv = 0;
5403 info->blocked_open = 0;
5404 info->default_threshold = 0;
5405 info->default_timeout = 0;
5406 INIT_WORK(&info->tqueue, do_softint, info);
5407 init_waitqueue_head(&info->open_wait);
5408 init_waitqueue_head(&info->close_wait);
5409 init_waitqueue_head(&info->shutdown_wait);
5410 init_waitqueue_head(&info->delta_msr_wait);
5413 info->read_status_mask =
5414 CyTIMEOUT| CySPECHAR| CyBREAK
5415 | CyPARITY| CyFRAME| CyOVERRUN;
5421 #ifndef CONFIG_CYZ_INTR
5422 if (number_z_boards && !cyz_timeron){
5424 cyz_timerlist.expires = jiffies + 1;
5425 add_timer(&cyz_timerlist);
5427 printk("Cyclades-Z polling initialized\n");
5430 #endif /* CONFIG_CYZ_INTR */
5437 cy_cleanup_module(void)
5441 #ifndef CONFIG_CYZ_INTR
5444 del_timer(&cyz_timerlist);
5446 #endif /* CONFIG_CYZ_INTR */
5448 if ((e1 = tty_unregister_driver(cy_serial_driver)))
5449 printk("cyc: failed to unregister Cyclades serial driver(%d)\n",
5452 put_tty_driver(cy_serial_driver);
5454 for (i = 0; i < NR_CARDS; i++) {
5455 if (cy_card[i].base_addr) {
5456 iounmap(cy_card[i].base_addr);
5457 if (cy_card[i].ctl_addr)
5458 iounmap(cy_card[i].ctl_addr);
5460 #ifndef CONFIG_CYZ_INTR
5461 && cy_card[i].num_chips != -1 /* not a Z card */
5462 #endif /* CONFIG_CYZ_INTR */
5464 free_irq(cy_card[i].irq, &cy_card[i]);
5466 if (cy_card[i].pdev)
5467 pci_release_regions(cy_card[i].pdev);
5471 } /* cy_cleanup_module */
5473 module_init(cy_init);
5474 module_exit(cy_cleanup_module);
5476 MODULE_LICENSE("GPL");