3 #undef Z_EXT_CHARS_IN_BUFFER
6 * linux/drivers/char/cyclades.c
8 * This file contains the driver for the Cyclades async multiport
11 * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
12 * Modified and maintained by Marcio Saito <marcio@cyclades.com>.
13 * Currently maintained by Cyclades team <async@cyclades.com>.
15 * For Technical support and installation problems, please send e-mail
16 * to support@cyclades.com.
18 * Much of the design and some of the code came from serial.c
19 * which was copyright (C) 1991, 1992 Linus Torvalds. It was
20 * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92,
21 * and then fixed as suggested by Michael K. Johnson 12/12/92.
23 * This version supports shared IRQ's (only for PCI boards).
25 * $Log: cyclades.c,v $
26 * Prevent users from opening non-existing Z ports.
28 * Revision 2.3.2.8 2000/07/06 18:14:16 ivan
29 * Fixed the PCI detection function to work properly on Alpha systems.
30 * Implemented support for TIOCSERGETLSR ioctl.
31 * Implemented full support for non-standard baud rates.
33 * Revision 2.3.2.7 2000/06/01 18:26:34 ivan
34 * Request PLX I/O region, although driver doesn't use it, to avoid
35 * problems with other drivers accessing it.
36 * Removed count for on-board buffer characters in cy_chars_in_buffer
39 * Revision 2.3.2.6 2000/05/05 13:56:05 ivan
40 * Driver now reports physical instead of virtual memory addresses.
41 * Masks were added to some Cyclades-Z read accesses.
42 * Implemented workaround for PLX9050 bug that would cause a system lockup
43 * in certain systems, depending on the MMIO addresses allocated to the
45 * Changed the Tx interrupt programming in the CD1400 chips to boost up
46 * performance (Cyclom-Y only).
47 * Code is now compliant with the new module interface (module_[init|exit]).
48 * Make use of the PCI helper functions to access PCI resources.
49 * Did some code "housekeeping".
51 * Revision 2.3.2.5 2000/01/19 14:35:33 ivan
52 * Fixed bug in cy_set_termios on CRTSCTS flag turnoff.
54 * Revision 2.3.2.4 2000/01/17 09:19:40 ivan
55 * Fixed SMP locking in Cyclom-Y interrupt handler.
57 * Revision 2.3.2.3 1999/12/28 12:11:39 ivan
58 * Added a new cyclades_card field called nports to allow the driver to
59 * know the exact number of ports found by the Z firmware after its load;
60 * RX buffer contention prevention logic on interrupt op mode revisited
62 * Revisited printk's for Z debug;
63 * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined;
65 * Revision 2.3.2.2 1999/10/01 11:27:43 ivan
66 * Fixed bug in cyz_poll that would make all ports but port 0
67 * unable to transmit/receive data (Cyclades-Z only);
68 * Implemented logic to prevent the RX buffer from being stuck with data
69 * due to a driver / firmware race condition in interrupt op mode
71 * Fixed bug in block_til_ready logic that would lead to a system crash;
72 * Revisited cy_close spinlock usage;
74 * Revision 2.3.2.1 1999/09/28 11:01:22 ivan
75 * Revisited CONFIG_PCI conditional compilation for PCI board support;
76 * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support;
77 * _Major_ cleanup on the Cyclades-Z interrupt support code / logic;
78 * Removed CTS handling from the driver -- this is now completely handled
79 * by the firmware (Cyclades-Z only);
80 * Flush RX on-board buffers on a port open (Cyclades-Z only);
81 * Fixed handling of ASYNC_SPD_* TTY flags;
82 * Module unload now unmaps all memory area allocated by ioremap;
84 * Revision 2.3.1.1 1999/07/15 16:45:53 ivan
85 * Removed CY_PROC conditional compilation;
86 * Implemented SMP-awareness for the driver;
87 * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off]
89 * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs
90 * (irq=NN) as parameters (only for ISA boards);
91 * Fixed bug in set_line_char that would prevent the Cyclades-Z
92 * ports from being configured at speeds above 115.2Kbps;
93 * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control
94 * switching from working properly;
95 * The driver now only prints IRQ info for the Cyclades-Z if it's
96 * configured to work in interrupt mode;
98 * Revision 2.2.2.3 1999/06/28 11:13:29 ivan
99 * Added support for interrupt mode operation for the Z cards;
100 * Removed the driver inactivity control for the Z;
101 * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when
102 * the Z firmware is not loaded yet;
103 * Replaced the "manual" Z Tx flush buffer by a call to a FW command of
104 * same functionality;
105 * Implemented workaround for IRQ setting loss on the PCI configuration
106 * registers after a PCI bridge EEPROM reload (affects PLX9060 only);
108 * Revision 2.2.2.2 1999/05/14 17:18:15 ivan
109 * /proc entry location changed to /proc/tty/driver/cyclades;
110 * Added support to shared IRQ's (only for PCI boards);
111 * Added support for Cobalt Qube2 systems;
112 * IRQ [de]allocation scheme revisited;
113 * BREAK implementation changed in order to make use of the 'break_ctl'
115 * Fixed typo in TTY structure field 'driver_name';
116 * Included a PCI bridge reset and EEPROM reload in the board
117 * initialization code (for both Y and Z series).
119 * Revision 2.2.2.1 1999/04/08 16:17:43 ivan
120 * Fixed a bug in cy_wait_until_sent that was preventing the port to be
121 * closed properly after a SIGINT;
122 * Module usage counter scheme revisited;
123 * Added support to the upcoming Y PCI boards (i.e., support to additional
126 * Revision 2.2.1.10 1999/01/20 16:14:29 ivan
127 * Removed all unnecessary page-alignement operations in ioremap calls
128 * (ioremap is currently safe for these operations).
130 * Revision 2.2.1.9 1998/12/30 18:18:30 ivan
131 * Changed access to PLX PCI bridge registers from I/O to MMIO, in
132 * order to make PLX9050-based boards work with certain motherboards.
134 * Revision 2.2.1.8 1998/11/13 12:46:20 ivan
135 * cy_close function now resets (correctly) the tty->closing flag;
136 * JIFFIES_DIFF macro fixed.
138 * Revision 2.2.1.7 1998/09/03 12:07:28 ivan
139 * Fixed bug in cy_close function, which was not informing HW of
140 * which port should have the reception disabled before doing so;
141 * fixed Cyclom-8YoP hardware detection bug.
143 * Revision 2.2.1.6 1998/08/20 17:15:39 ivan
144 * Fixed bug in cy_close function, which causes malfunction
145 * of one of the first 4 ports when a higher port is closed
148 * Revision 2.2.1.5 1998/08/10 18:10:28 ivan
149 * Fixed Cyclom-4Yo hardware detection bug.
151 * Revision 2.2.1.4 1998/08/04 11:02:50 ivan
152 * /proc/cyclades implementation with great collaboration of
153 * Marc Lewis <marc@blarg.net>;
154 * cyy_interrupt was changed to avoid occurrence of kernel oopses
155 * during PPP operation.
157 * Revision 2.2.1.3 1998/06/01 12:09:10 ivan
158 * General code review in order to comply with 2.1 kernel standards;
159 * data loss prevention for slow devices revisited (cy_wait_until_sent
161 * removed conditional compilation for new/old PCI structure support
162 * (now the driver only supports the new PCI structure).
164 * Revision 2.2.1.1 1998/03/19 16:43:12 ivan
165 * added conditional compilation for new/old PCI structure support;
166 * removed kernel series (2.0.x / 2.1.x) conditional compilation.
168 * Revision 2.1.1.3 1998/03/16 18:01:12 ivan
169 * cleaned up the data loss fix;
170 * fixed XON/XOFF handling once more (Cyclades-Z);
171 * general review of the driver routines;
172 * introduction of a mechanism to prevent data loss with slow
173 * printers, by forcing a delay before closing the port.
175 * Revision 2.1.1.2 1998/02/17 16:50:00 ivan
176 * fixed detection/handling of new CD1400 in Ye boards;
177 * fixed XON/XOFF handling (Cyclades-Z);
178 * fixed data loss caused by a premature port close;
179 * introduction of a flag that holds the CD1400 version ID per port
180 * (used by the CYGETCD1400VER new ioctl).
182 * Revision 2.1.1.1 1997/12/03 17:31:19 ivan
183 * Code review for the module cleanup routine;
184 * fixed RTS and DTR status report for new CD1400's in get_modem_info;
185 * includes anonymous changes regarding signal_pending.
187 * Revision 2.1 1997/11/01 17:42:41 ivan
188 * Changes in the driver to support Alpha systems (except 8Zo V_1);
189 * BREAK fix for the Cyclades-Z boards;
190 * driver inactivity control by FW implemented;
191 * introduction of flag that allows driver to take advantage of
192 * a special CD1400 feature related to HW flow control;
193 * added support for the CD1400 rev. J (Cyclom-Y boards);
194 * introduction of ioctls to:
195 * - control the rtsdtr_inv flag (Cyclom-Y);
196 * - control the rflow flag (Cyclom-Y);
197 * - adjust the polling interval (Cyclades-Z);
199 * Revision 1.36.4.33 1997/06/27 19:00:00 ivan
200 * Fixes related to kernel version conditional
203 * Revision 1.36.4.32 1997/06/14 19:30:00 ivan
204 * Compatibility issues between kernels 2.0.x and
205 * 2.1.x (mainly related to clear_bit function).
207 * Revision 1.36.4.31 1997/06/03 15:30:00 ivan
208 * Changes to define the memory window according to the
211 * Revision 1.36.4.30 1997/05/16 15:30:00 daniel
212 * Changes to support new cycladesZ boards.
214 * Revision 1.36.4.29 1997/05/12 11:30:00 daniel
215 * Merge of Bentson's and Daniel's version 1.36.4.28.
216 * Corrects bug in cy_detect_pci: check if there are more
217 * ports than the number of static structs allocated.
218 * Warning message during initialization if this driver is
219 * used with the new generation of cycladesZ boards. Those
220 * will be supported only in next release of the driver.
221 * Corrects bug in cy_detect_pci and cy_detect_isa that
222 * returned wrong number of VALID boards, when a cyclomY
223 * was found with no serial modules connected.
224 * Changes to use current (2.1.x) kernel subroutine names
225 * and created macros for compilation with 2.0.x kernel,
226 * instead of the other way around.
228 * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson
229 * Change queue_task_irq_off to queue_task_irq.
230 * The inline function queue_task_irq_off (tqueue.h)
231 * was removed from latest releases of 2.1.x kernel.
232 * Use of macro __init to mark the initialization
233 * routines, so memory can be reused.
234 * Also incorporate implementation of critical region
235 * in function cleanup_module() created by anonymous
238 * Revision 1.36.4.28 1997/04/25 16:00:00 daniel
239 * Change to support new firmware that solves DCD problem:
240 * application could fail to receive SIGHUP signal when DCD
243 * Revision 1.36.4.27 1997/03/26 10:30:00 daniel
244 * Changed for support linux versions 2.1.X.
245 * Backward compatible with linux versions 2.0.X.
246 * Corrected illegal use of filler field in
248 * Deleted some debug messages.
250 * Revision 1.36.4.26 1997/02/27 12:00:00 daniel
251 * Included check for NULL tty pointer in cyz_poll.
253 * Revision 1.36.4.25 1997/02/26 16:28:30 bentson
254 * Bill Foster at Blarg! Online services noticed that
255 * some of the switch elements of -Z modem control
256 * lacked a closing "break;"
258 * Revision 1.36.4.24 1997/02/24 11:00:00 daniel
259 * Changed low water threshold for buffer xmit_buf
261 * Revision 1.36.4.23 1996/12/02 21:50:16 bentson
262 * Marcio provided fix to modem status fetch for -Z
264 * Revision 1.36.4.22 1996/10/28 22:41:17 bentson
265 * improve mapping of -Z control page (thanks to Steve
266 * Price <stevep@fa.tdktca.com> for help on this)
268 * Revision 1.36.4.21 1996/09/10 17:00:10 bentson
269 * shift from CPU-bound to memcopy in cyz_polling operation
271 * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson
272 * Added support to set and report higher speeds.
274 * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito
275 * Some fixes in the HW flow control for the BETA release.
276 * Don't try to register the IRQ.
278 * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson
279 * make sure "cyc" appears in all kernel messages; all soft interrupts
280 * handled by same routine; recognize out-of-band reception; comment
281 * out some diagnostic messages; leave RTS/CTS flow control to hardware;
282 * fix race condition in -Z buffer management; only -Y needs to explicitly
283 * flush chars; tidy up some startup messages;
285 * Revision 1.36.4.18 1996/07/25 18:57:31 bentson
286 * shift MOD_INC_USE_COUNT location to match
287 * serial.c; purge some diagnostic messages;
289 * Revision 1.36.4.17 1996/07/25 18:01:08 bentson
290 * enable modem status messages and fetch & process them; note
291 * time of last activity type for each port; set_line_char now
292 * supports more than line 0 and treats 0 baud correctly;
293 * get_modem_info senses rs_status;
295 * Revision 1.36.4.16 1996/07/20 08:43:15 bentson
296 * barely works--now's time to turn on
297 * more features 'til it breaks
299 * Revision 1.36.4.15 1996/07/19 22:30:06 bentson
300 * check more -Z board status; shorten boot message
302 * Revision 1.36.4.14 1996/07/19 22:20:37 bentson
303 * fix reference to ch_ctrl in startup; verify return
304 * values from cyz_issue_cmd and cyz_update_channel;
305 * more stuff to get modem control correct;
307 * Revision 1.36.4.13 1996/07/11 19:53:33 bentson
308 * more -Z stuff folded in; re-order changes to put -Z stuff
309 * after -Y stuff (to make changes clearer)
311 * Revision 1.36.4.12 1996/07/11 15:40:55 bentson
312 * Add code to poll Cyclades-Z. Add code to get & set RS-232 control.
313 * Add code to send break. Clear firmware ID word at startup (so
314 * that other code won't talk to inactive board).
316 * Revision 1.36.4.11 1996/07/09 05:28:29 bentson
317 * add code for -Z in set_line_char
319 * Revision 1.36.4.10 1996/07/08 19:28:37 bentson
320 * fold more -Z stuff (or in some cases, error messages)
321 * into driver; add text to "don't know what to do" messages.
323 * Revision 1.36.4.9 1996/07/08 18:38:38 bentson
324 * moved compile-time flags near top of file; cosmetic changes
325 * to narrow text (to allow 2-up printing); changed many declarations
326 * to "static" to limit external symbols; shuffled code order to
327 * coalesce -Y and -Z specific code, also to put internal functions
328 * in order of tty_driver structure; added code to recognize -Z
329 * ports (and for moment, do nothing or report error); add cy_startup
330 * to parse boot command line for extra base addresses for ISA probes;
332 * Revision 1.36.4.8 1996/06/25 17:40:19 bentson
333 * reorder some code, fix types of some vars (int vs. long),
334 * add cy_setup to support user declared ISA addresses
336 * Revision 1.36.4.7 1996/06/21 23:06:18 bentson
337 * dump ioctl based firmware load (it's now a user level
338 * program); ensure uninitialzed ports cannot be used
340 * Revision 1.36.4.6 1996/06/20 23:17:19 bentson
341 * rename vars and restructure some code
343 * Revision 1.36.4.5 1996/06/14 15:09:44 bentson
344 * get right status back after boot load
346 * Revision 1.36.4.4 1996/06/13 19:51:44 bentson
347 * successfully loads firmware
349 * Revision 1.36.4.3 1996/06/13 06:08:33 bentson
350 * add more of the code for the boot/load ioctls
352 * Revision 1.36.4.2 1996/06/11 21:00:51 bentson
353 * start to add Z functionality--starting with ioctl
354 * for loading firmware
356 * Revision 1.36.4.1 1996/06/10 18:03:02 bentson
357 * added code to recognize Z/PCI card at initialization; report
358 * presence, but card is not initialized (because firmware needs
361 * Revision 1.36.3.8 1996/06/07 16:29:00 bentson
362 * starting minor number at zero; added missing verify_area
363 * as noted by Heiko Eissfeldt <heiko@colossus.escape.de>
365 * Revision 1.36.3.7 1996/04/19 21:06:18 bentson
366 * remove unneeded boot message & fix CLOCAL hardware flow
367 * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>);
368 * remove unused diagnostic statements; minor 0 is first;
370 * Revision 1.36.3.6 1996/03/13 13:21:17 marcio
371 * The kernel function vremap (available only in later 1.3.xx kernels)
372 * allows the access to memory addresses above the RAM. This revision
373 * of the driver supports PCI boards below 1Mb (device id 0x100) and
374 * above 1Mb (device id 0x101).
376 * Revision 1.36.3.5 1996/03/07 15:20:17 bentson
377 * Some global changes to interrupt handling spilled into
378 * this driver--mostly unused arguments in system function
379 * calls. Also added change by Marcio Saito which should
380 * reduce lost interrupts at startup by fast processors.
382 * Revision 1.36.3.4 1995/11/13 20:45:10 bentson
383 * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed
384 * in 1.3.41 kernel to remove a possible race condition, extend
385 * some error messages, and let the driver run as a loadable module
386 * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a
387 * possible race condition.
388 * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing.
390 * Revision 1.36.3.3 1995/11/13 19:44:48 bentson
391 * Changes by Linus Torvalds in 1.3.33 kernel distribution
392 * required due to reordering of driver initialization.
393 * Drivers are now initialized *after* memory management.
395 * Revision 1.36.3.2 1995/09/08 22:07:14 bentson
396 * remove printk from ISR; fix typo
398 * Revision 1.36.3.1 1995/09/01 12:00:42 marcio
399 * Minor fixes in the PCI board support. PCI function calls in
400 * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan
401 * <duncan@okay.com>. "bad serial count" message removed.
403 * Revision 1.36.3 1995/08/22 09:19:42 marcio
404 * Cyclom-Y/PCI support added. Changes in the cy_init routine and
405 * board initialization. Changes in the boot messages. The driver
406 * supports up to 4 boards and 64 ports by default.
408 * Revision 1.36.1.4 1995/03/29 06:14:14 bentson
409 * disambiguate between Cyclom-16Y and Cyclom-32Ye;
411 * Revision 1.36.1.3 1995/03/23 22:15:35 bentson
412 * add missing break in modem control block in ioctl switch statement
413 * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>);
415 * Revision 1.36.1.2 1995/03/22 19:16:22 bentson
416 * make sure CTS flow control is set as soon as possible (thanks
417 * to note from David Lambert <lambert@chesapeake.rps.slb.com>);
419 * Revision 1.36.1.1 1995/03/13 15:44:43 bentson
420 * initialize defaults for receive threshold and stale data timeout;
423 * Revision 1.36 1995/03/10 23:33:53 bentson
424 * added support of chips 4-7 in 32 port Cyclom-Ye;
425 * fix cy_interrupt pointer dereference problem
426 * (Joe Portman <baron@aa.net>);
427 * give better error response if open is attempted on non-existent port
428 * (Zachariah Vaum <jchryslr@netcom.com>);
429 * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>);
430 * conditional compilation for -16Y on systems with fast, noisy bus;
431 * comment out diagnostic print function;
432 * cleaned up table of base addresses;
433 * set receiver time-out period register to correct value,
434 * set receive threshold to better default values,
435 * set chip timer to more accurate 200 Hz ticking,
436 * add code to monitor and modify receive parameters
437 * (Rik Faith <faith@cs.unc.edu> Nick Simicich
438 * <njs@scifi.emi.net>);
440 * Revision 1.35 1994/12/16 13:54:18 steffen
441 * additional patch by Marcio Saito for board detection
442 * Accidently left out in 1.34
444 * Revision 1.34 1994/12/10 12:37:12 steffen
445 * This is the corrected version as suggested by Marcio Saito
447 * Revision 1.33 1994/12/01 22:41:18 bentson
448 * add hooks to support more high speeds directly; add tytso
449 * patch regarding CLOCAL wakeups
451 * Revision 1.32 1994/11/23 19:50:04 bentson
452 * allow direct kernel control of higher signalling rates;
453 * look for cards at additional locations
455 * Revision 1.31 1994/11/16 04:33:28 bentson
456 * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com--
457 * a problem in chars_in_buffer has been resolved by some
458 * small changes; this should yield smoother output
460 * Revision 1.30 1994/11/16 04:28:05 bentson
461 * Fix from Corey Minyard, Internet: minyard@metronet.com,
462 * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to
463 * cy_hangup that appears to clear up much (all?) of the
464 * DTR glitches; also he's added/cleaned-up diagnostic messages
466 * Revision 1.29 1994/11/16 04:16:07 bentson
467 * add change proposed by Ralph Sims, ralphs@halcyon.com, to
468 * operate higher speeds in same way as other serial ports;
469 * add more serial ports (for up to two 16-port muxes).
471 * Revision 1.28 1994/11/04 00:13:16 root
472 * turn off diagnostic messages
474 * Revision 1.27 1994/11/03 23:46:37 root
475 * bunch of changes to bring driver into greater conformance
476 * with the serial.c driver (looking for missed fixes)
478 * Revision 1.26 1994/11/03 22:40:36 root
479 * automatic interrupt probing fixed.
481 * Revision 1.25 1994/11/03 20:17:02 root
482 * start to implement auto-irq
484 * Revision 1.24 1994/11/03 18:01:55 root
485 * still working on modem signals--trying not to drop DTR
486 * during the getty/login processes
488 * Revision 1.23 1994/11/03 17:51:36 root
489 * extend baud rate support; set receive threshold as function
490 * of baud rate; fix some problems with RTS/CTS;
492 * Revision 1.22 1994/11/02 18:05:35 root
493 * changed arguments to udelay to type long to get
494 * delays to be of correct duration
496 * Revision 1.21 1994/11/02 17:37:30 root
497 * employ udelay (after calibrating loops_per_second earlier
498 * in init/main.c) instead of using home-grown delay routines
500 * Revision 1.20 1994/11/02 03:11:38 root
501 * cy_chars_in_buffer forces a return value of 0 to let
502 * login work (don't know why it does); some functions
503 * that were returning EFAULT, now executes the code;
504 * more work on deciding when to disable xmit interrupts;
506 * Revision 1.19 1994/11/01 20:10:14 root
507 * define routine to start transmission interrupts (by enabling
508 * transmit interrupts); directly enable/disable modem interrupts;
510 * Revision 1.18 1994/11/01 18:40:45 bentson
511 * Don't always enable transmit interrupts in startup; interrupt on
512 * TxMpty instead of TxRdy to help characters get out before shutdown;
513 * restructure xmit interrupt to check for chars first and quit if
514 * none are ready to go; modem status (MXVRx) is upright, _not_ inverted
517 * Revision 1.17 1994/10/30 04:39:45 bentson
518 * rename serial_driver and callout_driver to cy_serial_driver and
519 * cy_callout_driver to avoid linkage interference; initialize
520 * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port
521 * from cyclades_port structure; add paranoia check to cy_close;
523 * Revision 1.16 1994/10/30 01:14:33 bentson
524 * change major numbers; add some _early_ return statements;
526 * Revision 1.15 1994/10/29 06:43:15 bentson
527 * final tidying up for clean compile; enable some error reporting
529 * Revision 1.14 1994/10/28 20:30:22 Bentson
530 * lots of changes to drag the driver towards the new tty_io
531 * structures and operation. not expected to work, but may
534 * Revision 1.13 1994/07/21 23:08:57 Bentson
535 * add some diagnostic cruft; support 24 lines (for testing
536 * both -8Y and -16Y cards; be more thorough in servicing all
537 * chips during interrupt; add "volatile" a few places to
538 * circumvent compiler optimizations; fix base & offset
539 * computations in block_til_ready (was causing chip 0 to
542 * Revision 1.12 1994/07/19 16:42:11 Bentson
543 * add some hackery for kernel version 1.1.8; expand
544 * error messages; refine timing for delay loops and
545 * declare loop params volatile
547 * Revision 1.11 1994/06/11 21:53:10 bentson
548 * get use of save_car right in transmit interrupt service
550 * Revision 1.10.1.1 1994/06/11 21:31:18 bentson
551 * add some diagnostic printing; try to fix save_car stuff
553 * Revision 1.10 1994/06/11 20:36:08 bentson
554 * clean up compiler warnings
556 * Revision 1.9 1994/06/11 19:42:46 bentson
557 * added a bunch of code to support modem signalling
559 * Revision 1.8 1994/06/11 17:57:07 bentson
560 * recognize break & parity error
562 * Revision 1.7 1994/06/05 05:51:34 bentson
563 * Reorder baud table to be monotonic; add cli to CP; discard
564 * incoming characters and status if the line isn't open; start to
565 * fold code into cy_throttle; start to port get_serial_info,
566 * set_serial_info, get_modem_info, set_modem_info, and send_break
567 * from serial.c; expand cy_ioctl; relocate and expand config_setup;
568 * get flow control characters from tty struct; invalidate ports w/o
571 * Revision 1.6 1994/05/31 18:42:21 bentson
572 * add a loop-breaker in the interrupt service routine;
573 * note when port is initialized so that it can be shut
574 * down under the right conditions; receive works without
577 * Revision 1.5 1994/05/30 00:55:02 bentson
578 * transmit works without obvious errors
580 * Revision 1.4 1994/05/27 18:46:27 bentson
581 * incorporated more code from lib_y.c; can now print short
582 * strings under interrupt control to port zero; seems to
583 * select ports/channels/lines correctly
585 * Revision 1.3 1994/05/25 22:12:44 bentson
586 * shifting from multi-port on a card to proper multiplexor
587 * data structures; added skeletons of most routines
589 * Revision 1.2 1994/05/19 13:21:43 bentson
590 * start to crib from other sources
594 #define CY_VERSION "2.4"
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
630 #include <linux/module.h>
631 #include <linux/errno.h>
632 #include <linux/signal.h>
633 #include <linux/sched.h>
634 #include <linux/timer.h>
635 #include <linux/interrupt.h>
636 #include <linux/tty.h>
637 #include <linux/tty_flip.h>
638 #include <linux/serial.h>
639 #include <linux/major.h>
640 #include <linux/string.h>
641 #include <linux/fcntl.h>
642 #include <linux/ptrace.h>
643 #include <linux/cyclades.h>
644 #include <linux/mm.h>
645 #include <linux/ioport.h>
646 #include <linux/init.h>
647 #include <linux/delay.h>
648 #include <linux/spinlock.h>
649 #include <linux/bitops.h>
651 #include <asm/system.h>
654 #include <asm/uaccess.h>
656 #define CY_LOCK(info,flags) \
658 spin_lock_irqsave(&info->card->card_lock, flags); \
661 #define CY_UNLOCK(info,flags) \
663 spin_unlock_irqrestore(&info->card->card_lock, flags); \
666 #include <linux/kernel.h>
667 #include <linux/pci.h>
669 #include <linux/stat.h>
670 #include <linux/proc_fs.h>
672 static void cy_throttle(struct tty_struct
*tty
);
673 static void cy_send_xchar(struct tty_struct
*tty
, char ch
);
675 #define IS_CYC_Z(card) ((card).num_chips == -1)
677 #define Z_FPGA_CHECK(card) \
678 ((readl(&((struct RUNTIME_9060 __iomem *) \
679 ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0)
681 #define ISZLOADED(card) (((ZO_V1==readl(&((struct RUNTIME_9060 __iomem *) \
682 ((card).ctl_addr))->mail_box_0)) || \
683 Z_FPGA_CHECK(card)) && \
684 (ZFIRM_ID==readl(&((struct FIRM_ID __iomem *) \
685 ((card).base_addr+ID_ADDRESS))->signature)))
687 #ifndef SERIAL_XMIT_SIZE
688 #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096))
690 #define WAKEUP_CHARS 256
692 #define STD_COM_FLAGS (0)
694 static struct tty_driver
*cy_serial_driver
;
697 /* This is the address lookup table. The driver will probe for
698 Cyclom-Y/ISA boards at all addresses in here. If you want the
699 driver to probe addresses at a different address, add it to
700 this table. If the driver is probing some other board and
701 causing problems, remove the offending address from this table.
702 The cy_setup function extracts additional addresses from the
703 boot options line. The form is "cyclades=address,address..."
706 static unsigned int cy_isa_addresses
[] = {
715 0, 0, 0, 0, 0, 0, 0, 0
718 #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)
721 static long maddr
[NR_CARDS
];
722 static int irq
[NR_CARDS
];
724 module_param_array(maddr
, long, NULL
, 0);
725 module_param_array(irq
, int, NULL
, 0);
728 #endif /* CONFIG_ISA */
730 /* This is the per-card data structure containing address, irq, number of
731 channels, etc. This driver supports a maximum of NR_CARDS cards.
733 static struct cyclades_card cy_card
[NR_CARDS
];
735 /* This is the per-channel data structure containing pointers, flags
736 and variables for the port. This driver supports a maximum of NR_PORTS.
738 static struct cyclades_port cy_port
[NR_PORTS
];
740 static int cy_next_channel
; /* next minor available */
743 * This is used to look up the divisor speeds and the timeouts
744 * We're normally limited to 15 distinct baud rates. The extra
745 * are accessed via settings in info->flags.
746 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
747 * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
751 static int baud_table
[] = {
752 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
753 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
757 static char baud_co_25
[] = { /* 25 MHz clock option table */
758 /* value => 00 01 02 03 04 */
759 /* divide by 8 32 128 512 2048 */
760 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
761 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
764 static char baud_bpr_25
[] = { /* 25 MHz baud rate period table */
765 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
766 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15
769 static char baud_co_60
[] = { /* 60 MHz clock option table (CD1400 J) */
770 /* value => 00 01 02 03 04 */
771 /* divide by 8 32 128 512 2048 */
772 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
773 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
777 static char baud_bpr_60
[] = { /* 60 MHz baud rate period table (CD1400 J) */
778 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
779 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
783 static char baud_cor3
[] = { /* receive threshold */
784 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
785 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
790 * The Cyclades driver implements HW flow control as any serial driver.
791 * The cyclades_port structure member rflow and the vector rflow_thr
792 * allows us to take advantage of a special feature in the CD1400 to avoid
793 * data loss even when the system interrupt latency is too high. These flags
794 * are to be used only with very special applications. Setting these flags
795 * requires the use of a special cable (DTR and RTS reversed). In the new
796 * CD1400-based boards (rev. 6.00 or later), there is no need for special
800 static char rflow_thr
[] = { /* rflow threshold */
801 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
802 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
806 /* The Cyclom-Ye has placed the sequential chips in non-sequential
807 * address order. This look-up table overcomes that problem.
809 static int cy_chip_offset
[] = { 0x0000,
819 /* PCI related definitions */
822 static struct pci_device_id cy_pci_dev_id
[] __devinitdata
= {
823 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_Y_Lo
) }, /* PCI < 1Mb */
824 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_Y_Hi
) }, /* PCI > 1Mb */
825 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_4Y_Lo
) }, /* 4Y PCI < 1Mb */
826 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_4Y_Hi
) }, /* 4Y PCI > 1Mb */
827 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_8Y_Lo
) }, /* 8Y PCI < 1Mb */
828 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_8Y_Hi
) }, /* 8Y PCI > 1Mb */
829 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_Z_Lo
) }, /* Z PCI < 1Mb */
830 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES
, PCI_DEVICE_ID_CYCLOM_Z_Hi
) }, /* Z PCI > 1Mb */
831 { } /* end of table */
833 MODULE_DEVICE_TABLE(pci
, cy_pci_dev_id
);
836 static void cy_start(struct tty_struct
*);
837 static void set_line_char(struct cyclades_port
*);
838 static int cyz_issue_cmd(struct cyclades_card
*, __u32
, __u8
, __u32
);
840 static unsigned detect_isa_irq(void __iomem
*);
841 #endif /* CONFIG_ISA */
843 static int cyclades_get_proc_info(char *, char **, off_t
, int, int *, void *);
845 #ifndef CONFIG_CYZ_INTR
846 static void cyz_poll(unsigned long);
848 /* The Cyclades-Z polling cycle is defined by this variable */
849 static long cyz_polling_cycle
= CZ_DEF_POLL
;
851 static DEFINE_TIMER(cyz_timerlist
, cyz_poll
, 0, 0);
853 #else /* CONFIG_CYZ_INTR */
854 static void cyz_rx_restart(unsigned long);
855 static struct timer_list cyz_rx_full_timer
[NR_PORTS
];
856 #endif /* CONFIG_CYZ_INTR */
858 static inline int serial_paranoia_check(struct cyclades_port
*info
,
859 char *name
, const char *routine
)
861 #ifdef SERIAL_PARANOIA_CHECK
863 printk(KERN_WARNING
"cyc Warning: null cyclades_port for (%s) "
864 "in %s\n", name
, routine
);
868 if ((long)info
< (long)(&cy_port
[0]) ||
869 (long)(&cy_port
[NR_PORTS
]) < (long)info
) {
870 printk(KERN_WARNING
"cyc Warning: cyclades_port out of range "
871 "for (%s) in %s\n", name
, routine
);
875 if (info
->magic
!= CYCLADES_MAGIC
) {
876 printk(KERN_WARNING
"cyc Warning: bad magic number for serial "
877 "struct (%s) in %s\n", name
, routine
);
882 } /* serial_paranoia_check */
885 * This routine is used by the interrupt handler to schedule
886 * processing in the software interrupt portion of the driver
887 * (also known as the "bottom half"). This can be called any
888 * number of times for any channel without harm.
890 static inline void cy_sched_event(struct cyclades_port
*info
, int event
)
892 info
->event
|= 1 << event
; /* remember what kind of event and who */
893 schedule_work(&info
->tqueue
);
894 } /* cy_sched_event */
897 * This routine is used to handle the "bottom half" processing for the
898 * serial driver, known also the "software interrupt" processing.
899 * This processing is done at the kernel interrupt level, after the
900 * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
901 * is where time-consuming activities which can not be done in the
902 * interrupt driver proper are done; the interrupt driver schedules
903 * them using cy_sched_event(), and they get done here.
905 * This is done through one level of indirection--the task queue.
906 * When a hardware interrupt service routine wants service by the
907 * driver's bottom half, it enqueues the appropriate tq_struct (one
908 * per port) to the keventd work queue and sets a request flag
909 * that the work queue be processed.
911 * Although this may seem unwieldy, it gives the system a way to
912 * pass an argument (in this case the pointer to the cyclades_port
913 * structure) to the bottom half of the driver. Previous kernels
914 * had to poll every port to see if that port needed servicing.
917 do_softint(struct work_struct
*work
)
919 struct cyclades_port
*info
=
920 container_of(work
, struct cyclades_port
, tqueue
);
921 struct tty_struct
*tty
;
927 if (test_and_clear_bit(Cy_EVENT_HANGUP
, &info
->event
)) {
928 tty_hangup(info
->tty
);
929 wake_up_interruptible(&info
->open_wait
);
930 info
->flags
&= ~ASYNC_NORMAL_ACTIVE
;
932 if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP
, &info
->event
))
933 wake_up_interruptible(&info
->open_wait
);
934 #ifdef CONFIG_CYZ_INTR
935 if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL
, &info
->event
)) {
936 if (cyz_rx_full_timer
[info
->line
].function
== NULL
) {
937 cyz_rx_full_timer
[info
->line
].expires
= jiffies
+ 1;
938 cyz_rx_full_timer
[info
->line
].function
= cyz_rx_restart
;
939 cyz_rx_full_timer
[info
->line
].data
=
941 add_timer(&cyz_rx_full_timer
[info
->line
]);
945 if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP
, &info
->event
))
946 wake_up_interruptible(&info
->delta_msr_wait
);
949 if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP
, &info
->event
))
950 complete(&info
->shutdown_wait
);
955 /***********************************************************/
956 /********* Start of block of Cyclom-Y specific code ********/
958 /* This routine waits up to 1000 micro-seconds for the previous
959 command to the Cirrus chip to complete and then issues the
960 new command. An error is returned if the previous command
961 didn't finish within the time limit.
963 This function is only called from inside spinlock-protected code.
965 static int cyy_issue_cmd(void __iomem
* base_addr
, u_char cmd
, int index
)
969 /* Check to see that the previous command has completed */
970 for (i
= 0; i
< 100; i
++) {
971 if (readb(base_addr
+ (CyCCR
<< index
)) == 0) {
976 /* if the CCR never cleared, the previous command
977 didn't finish within the "reasonable time" */
981 /* Issue the new command */
982 cy_writeb(base_addr
+ (CyCCR
<< index
), cmd
);
985 } /* cyy_issue_cmd */
988 /* ISA interrupt detection code */
989 static unsigned detect_isa_irq(void __iomem
* address
)
992 unsigned long irqs
, flags
;
993 int save_xir
, save_car
;
994 int index
= 0; /* IRQ probing is only for ISA */
996 /* forget possible initially masked and pending IRQ */
997 irq
= probe_irq_off(probe_irq_on());
999 /* Clear interrupts on the board first */
1000 cy_writeb(address
+ (Cy_ClrIntr
<< index
), 0);
1001 /* Cy_ClrIntr is 0x1800 */
1003 irqs
= probe_irq_on();
1007 /* Enable the Tx interrupts on the CD1400 */
1008 local_irq_save(flags
);
1009 cy_writeb(address
+ (CyCAR
<< index
), 0);
1010 cyy_issue_cmd(address
, CyCHAN_CTL
| CyENB_XMTR
, index
);
1012 cy_writeb(address
+ (CyCAR
<< index
), 0);
1013 cy_writeb(address
+ (CySRER
<< index
),
1014 readb(address
+ (CySRER
<< index
)) | CyTxRdy
);
1015 local_irq_restore(flags
);
1020 /* Check which interrupt is in use */
1021 irq
= probe_irq_off(irqs
);
1024 save_xir
= (u_char
) readb(address
+ (CyTIR
<< index
));
1025 save_car
= readb(address
+ (CyCAR
<< index
));
1026 cy_writeb(address
+ (CyCAR
<< index
), (save_xir
& 0x3));
1027 cy_writeb(address
+ (CySRER
<< index
),
1028 readb(address
+ (CySRER
<< index
)) & ~CyTxRdy
);
1029 cy_writeb(address
+ (CyTIR
<< index
), (save_xir
& 0x3f));
1030 cy_writeb(address
+ (CyCAR
<< index
), (save_car
));
1031 cy_writeb(address
+ (Cy_ClrIntr
<< index
), 0);
1032 /* Cy_ClrIntr is 0x1800 */
1034 return (irq
> 0) ? irq
: 0;
1036 #endif /* CONFIG_ISA */
1038 static void cyy_intr_chip(struct cyclades_card
*cinfo
, int chip
,
1039 void __iomem
* base_addr
, int status
, int index
)
1041 struct cyclades_port
*info
;
1042 struct tty_struct
*tty
;
1044 int i
, j
, len
, mdm_change
, mdm_status
, outch
;
1045 int save_xir
, channel
, save_car
;
1048 if (status
& CySRReceive
) { /* reception interrupt */
1049 #ifdef CY_DEBUG_INTERRUPTS
1050 printk(KERN_DEBUG
"cyy_interrupt: rcvd intr, chip %d\n", chip
);
1052 /* determine the channel & change to that context */
1053 spin_lock(&cinfo
->card_lock
);
1054 save_xir
= (u_char
) readb(base_addr
+ (CyRIR
<< index
));
1055 channel
= (u_short
) (save_xir
& CyIRChannel
);
1056 i
= channel
+ chip
* 4 + cinfo
->first_line
;
1058 info
->last_active
= jiffies
;
1059 save_car
= readb(base_addr
+ (CyCAR
<< index
));
1060 cy_writeb(base_addr
+ (CyCAR
<< index
), save_xir
);
1062 /* if there is nowhere to put the data, discard it */
1063 if (info
->tty
== 0) {
1064 j
= (readb(base_addr
+ (CyRIVR
<< index
)) &
1066 if (j
== CyIVRRxEx
) { /* exception */
1067 data
= readb(base_addr
+ (CyRDSR
<< index
));
1068 } else { /* normal character reception */
1069 char_count
= readb(base_addr
+
1071 while (char_count
--) {
1072 data
= readb(base_addr
+
1076 } else { /* there is an open port for this data */
1078 j
= (readb(base_addr
+ (CyRIVR
<< index
)) &
1080 if (j
== CyIVRRxEx
) { /* exception */
1081 data
= readb(base_addr
+ (CyRDSR
<< index
));
1083 /* For statistics only */
1086 else if (data
& CyFRAME
)
1087 info
->icount
.frame
++;
1088 else if (data
& CyPARITY
)
1089 info
->icount
.parity
++;
1090 else if (data
& CyOVERRUN
)
1091 info
->icount
.overrun
++;
1093 if (data
& info
->ignore_status_mask
) {
1097 if (tty_buffer_request_room(tty
, 1)) {
1098 if (data
& info
->read_status_mask
) {
1099 if (data
& CyBREAK
) {
1100 tty_insert_flip_char(
1112 } else if (data
& CyFRAME
) {
1113 tty_insert_flip_char(
1123 } else if (data
& CyPARITY
) {
1124 /* Pieces of seven... */
1125 tty_insert_flip_char(
1135 } else if (data
& CyOVERRUN
) {
1136 tty_insert_flip_char(
1140 /* If the flip buffer itself is
1141 overflowing, we still lose
1142 the next incoming character.
1144 tty_insert_flip_char(
1154 /* These two conditions may imply */
1155 /* a normal read should be done. */
1156 /* }else if(data & CyTIMEOUT){ */
1157 /* }else if(data & CySPECHAR){ */
1159 tty_insert_flip_char(
1165 tty_insert_flip_char(tty
, 0,
1170 /* there was a software buffer
1171 overrun and nothing could be
1173 info
->icount
.buf_overrun
++;
1174 info
->idle_stats
.overruns
++;
1176 } else { /* normal character reception */
1177 /* load # chars available from the chip */
1178 char_count
= readb(base_addr
+
1181 #ifdef CY_ENABLE_MONITORING
1182 ++info
->mon
.int_count
;
1183 info
->mon
.char_count
+= char_count
;
1184 if (char_count
> info
->mon
.char_max
)
1185 info
->mon
.char_max
= char_count
;
1186 info
->mon
.char_last
= char_count
;
1188 len
= tty_buffer_request_room(tty
, char_count
);
1190 data
= readb(base_addr
+
1192 tty_insert_flip_char(tty
, data
,
1194 info
->idle_stats
.recv_bytes
++;
1200 info
->idle_stats
.recv_idle
= jiffies
;
1202 tty_schedule_flip(tty
);
1204 /* end of service */
1205 cy_writeb(base_addr
+ (CyRIR
<< index
), (save_xir
& 0x3f));
1206 cy_writeb(base_addr
+ (CyCAR
<< index
), (save_car
));
1207 spin_unlock(&cinfo
->card_lock
);
1210 if (status
& CySRTransmit
) { /* transmission interrupt */
1211 /* Since we only get here when the transmit buffer
1212 is empty, we know we can always stuff a dozen
1214 #ifdef CY_DEBUG_INTERRUPTS
1215 printk(KERN_DEBUG
"cyy_interrupt: xmit intr, chip %d\n", chip
);
1218 /* determine the channel & change to that context */
1219 spin_lock(&cinfo
->card_lock
);
1220 save_xir
= (u_char
) readb(base_addr
+ (CyTIR
<< index
));
1221 channel
= (u_short
) (save_xir
& CyIRChannel
);
1222 i
= channel
+ chip
* 4 + cinfo
->first_line
;
1223 save_car
= readb(base_addr
+ (CyCAR
<< index
));
1224 cy_writeb(base_addr
+ (CyCAR
<< index
), save_xir
);
1226 /* validate the port# (as configured and open) */
1227 if ((i
< 0) || (NR_PORTS
<= i
)) {
1228 cy_writeb(base_addr
+ (CySRER
<< index
),
1229 readb(base_addr
+ (CySRER
<< index
)) &
1234 info
->last_active
= jiffies
;
1235 if (info
->tty
== 0) {
1236 cy_writeb(base_addr
+ (CySRER
<< index
),
1237 readb(base_addr
+ (CySRER
<< index
)) &
1242 /* load the on-chip space for outbound data */
1243 char_count
= info
->xmit_fifo_size
;
1245 if (info
->x_char
) { /* send special char */
1246 outch
= info
->x_char
;
1247 cy_writeb(base_addr
+ (CyTDR
<< index
), outch
);
1253 if (info
->breakon
|| info
->breakoff
) {
1254 if (info
->breakon
) {
1255 cy_writeb(base_addr
+ (CyTDR
<< index
), 0);
1256 cy_writeb(base_addr
+ (CyTDR
<< index
), 0x81);
1260 if (info
->breakoff
) {
1261 cy_writeb(base_addr
+ (CyTDR
<< index
), 0);
1262 cy_writeb(base_addr
+ (CyTDR
<< index
), 0x83);
1268 while (char_count
-- > 0) {
1269 if (!info
->xmit_cnt
) {
1270 if (readb(base_addr
+ (CySRER
<< index
)) &
1272 cy_writeb(base_addr
+ (CySRER
<< index
),
1274 (CySRER
<< index
)) &
1277 cy_writeb(base_addr
+ (CySRER
<< index
),
1279 (CySRER
<< index
)) &
1280 ~CyTxRdy
) | CyTxMpty
);
1284 if (info
->xmit_buf
== 0) {
1285 cy_writeb(base_addr
+ (CySRER
<< index
),
1286 readb(base_addr
+ (CySRER
<< index
)) &
1290 if (info
->tty
->stopped
|| info
->tty
->hw_stopped
) {
1291 cy_writeb(base_addr
+ (CySRER
<< index
),
1292 readb(base_addr
+ (CySRER
<< index
)) &
1296 /* Because the Embedded Transmit Commands have
1297 been enabled, we must check to see if the
1298 escape character, NULL, is being sent. If it
1299 is, we must ensure that there is room for it
1300 to be doubled in the output stream. Therefore
1301 we no longer advance the pointer when the
1302 character is fetched, but rather wait until
1303 after the check for a NULL output character.
1304 This is necessary because there may not be
1305 room for the two chars needed to send a NULL.)
1307 outch
= info
->xmit_buf
[info
->xmit_tail
];
1310 info
->xmit_tail
= (info
->xmit_tail
+ 1) &
1311 (SERIAL_XMIT_SIZE
- 1);
1312 cy_writeb(base_addr
+ (CyTDR
<< index
), outch
);
1315 if (char_count
> 1) {
1317 info
->xmit_tail
= (info
->xmit_tail
+ 1)&
1318 (SERIAL_XMIT_SIZE
- 1);
1319 cy_writeb(base_addr
+ (CyTDR
<< index
),
1321 cy_writeb(base_addr
+ (CyTDR
<< index
),
1331 if (info
->xmit_cnt
< WAKEUP_CHARS
) {
1332 cy_sched_event(info
, Cy_EVENT_WRITE_WAKEUP
);
1335 /* end of service */
1336 cy_writeb(base_addr
+ (CyTIR
<< index
), (save_xir
& 0x3f));
1337 cy_writeb(base_addr
+ (CyCAR
<< index
), (save_car
));
1338 spin_unlock(&cinfo
->card_lock
);
1341 if (status
& CySRModem
) { /* modem interrupt */
1343 /* determine the channel & change to that context */
1344 spin_lock(&cinfo
->card_lock
);
1345 save_xir
= (u_char
) readb(base_addr
+ (CyMIR
<< index
));
1346 channel
= (u_short
) (save_xir
& CyIRChannel
);
1347 info
= &cy_port
[channel
+ chip
* 4 + cinfo
->first_line
];
1348 info
->last_active
= jiffies
;
1349 save_car
= readb(base_addr
+ (CyCAR
<< index
));
1350 cy_writeb(base_addr
+ (CyCAR
<< index
), save_xir
);
1352 mdm_change
= readb(base_addr
+ (CyMISR
<< index
));
1353 mdm_status
= readb(base_addr
+ (CyMSVR1
<< index
));
1355 if (info
->tty
== 0) { /* no place for data, ignore it */
1358 if (mdm_change
& CyANY_DELTA
) {
1359 /* For statistics only */
1360 if (mdm_change
& CyDCD
)
1362 if (mdm_change
& CyCTS
)
1364 if (mdm_change
& CyDSR
)
1366 if (mdm_change
& CyRI
)
1369 cy_sched_event(info
, Cy_EVENT_DELTA_WAKEUP
);
1372 if ((mdm_change
& CyDCD
) &&
1373 (info
->flags
& ASYNC_CHECK_CD
)) {
1374 if (mdm_status
& CyDCD
) {
1375 cy_sched_event(info
,
1376 Cy_EVENT_OPEN_WAKEUP
);
1378 cy_sched_event(info
, Cy_EVENT_HANGUP
);
1381 if ((mdm_change
& CyCTS
) &&
1382 (info
->flags
& ASYNC_CTS_FLOW
)) {
1383 if (info
->tty
->hw_stopped
) {
1384 if (mdm_status
& CyCTS
) {
1385 /* cy_start isn't used
1387 info
->tty
->hw_stopped
= 0;
1388 cy_writeb(base_addr
+
1394 cy_sched_event(info
,
1395 Cy_EVENT_WRITE_WAKEUP
);
1398 if (!(mdm_status
& CyCTS
)) {
1399 /* cy_stop isn't used
1401 info
->tty
->hw_stopped
= 1;
1402 cy_writeb(base_addr
+
1411 if (mdm_change
& CyDSR
) {
1413 if (mdm_change
& CyRI
) {
1416 /* end of service */
1417 cy_writeb(base_addr
+ (CyMIR
<< index
), (save_xir
& 0x3f));
1418 cy_writeb(base_addr
+ (CyCAR
<< index
), save_car
);
1419 spin_unlock(&cinfo
->card_lock
);
1423 /* The real interrupt service routine is called
1424 whenever the card wants its hand held--chars
1425 received, out buffer empty, modem change, etc.
1427 static irqreturn_t
cyy_interrupt(int irq
, void *dev_id
)
1430 struct cyclades_card
*cinfo
;
1431 void __iomem
*base_addr
, *card_base_addr
;
1437 if ((cinfo
= (struct cyclades_card
*)dev_id
) == 0) {
1438 #ifdef CY_DEBUG_INTERRUPTS
1439 printk(KERN_DEBUG
"cyy_interrupt: spurious interrupt %d\n",irq
);
1441 return IRQ_NONE
; /* spurious interrupt */
1444 card_base_addr
= cinfo
->base_addr
;
1445 index
= cinfo
->bus_index
;
1447 /* card was not initialized yet (e.g. DEBUG_SHIRQ) */
1448 if (unlikely(card_base_addr
== NULL
))
1451 /* This loop checks all chips in the card. Make a note whenever
1452 _any_ chip had some work to do, as this is considered an
1453 indication that there will be more to do. Only when no chip
1454 has any work does this outermost loop exit.
1458 for (chip
= 0; chip
< cinfo
->num_chips
; chip
++) {
1459 base_addr
= cinfo
->base_addr
+
1460 (cy_chip_offset
[chip
] << index
);
1462 while ((status
= readb(base_addr
+
1463 (CySVRR
<< index
))) != 0x00) {
1465 /* The purpose of the following test is to ensure that
1466 no chip can monopolize the driver. This forces the
1467 chips to be checked in a round-robin fashion (after
1468 draining each of a bunch (1000) of characters).
1470 if (1000 < too_many
++) {
1473 cyy_intr_chip(cinfo
, chip
, base_addr
, status
,
1479 /* clear interrupts */
1480 spin_lock(&cinfo
->card_lock
);
1481 cy_writeb(card_base_addr
+ (Cy_ClrIntr
<< index
), 0);
1482 /* Cy_ClrIntr is 0x1800 */
1483 spin_unlock(&cinfo
->card_lock
);
1485 } /* cyy_interrupt */
1487 /***********************************************************/
1488 /********* End of block of Cyclom-Y specific code **********/
1489 /******** Start of block of Cyclades-Z specific code *********/
1490 /***********************************************************/
1493 cyz_fetch_msg(struct cyclades_card
*cinfo
,
1494 __u32
* channel
, __u8
* cmd
, __u32
* param
)
1496 struct FIRM_ID __iomem
*firm_id
;
1497 struct ZFW_CTRL __iomem
*zfw_ctrl
;
1498 struct BOARD_CTRL __iomem
*board_ctrl
;
1499 unsigned long loc_doorbell
;
1501 firm_id
= cinfo
->base_addr
+ ID_ADDRESS
;
1502 if (!ISZLOADED(*cinfo
)) {
1505 zfw_ctrl
= cinfo
->base_addr
+ (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
1506 board_ctrl
= &zfw_ctrl
->board_ctrl
;
1508 loc_doorbell
= readl(&((struct RUNTIME_9060 __iomem
*)
1509 (cinfo
->ctl_addr
))->loc_doorbell
);
1511 *cmd
= (char)(0xff & loc_doorbell
);
1512 *channel
= readl(&board_ctrl
->fwcmd_channel
);
1513 *param
= (__u32
) readl(&board_ctrl
->fwcmd_param
);
1514 cy_writel(&((struct RUNTIME_9060 __iomem
*)(cinfo
->ctl_addr
))->
1515 loc_doorbell
, 0xffffffff);
1519 } /* cyz_fetch_msg */
1522 cyz_issue_cmd(struct cyclades_card
*cinfo
,
1523 __u32 channel
, __u8 cmd
, __u32 param
)
1525 struct FIRM_ID __iomem
*firm_id
;
1526 struct ZFW_CTRL __iomem
*zfw_ctrl
;
1527 struct BOARD_CTRL __iomem
*board_ctrl
;
1528 __u32 __iomem
*pci_doorbell
;
1531 firm_id
= cinfo
->base_addr
+ ID_ADDRESS
;
1532 if (!ISZLOADED(*cinfo
)) {
1535 zfw_ctrl
= cinfo
->base_addr
+ (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
1536 board_ctrl
= &zfw_ctrl
->board_ctrl
;
1540 &((struct RUNTIME_9060 __iomem
*)(cinfo
->ctl_addr
))->pci_doorbell
;
1541 while ((readl(pci_doorbell
) & 0xff) != 0) {
1542 if (index
++ == 1000) {
1543 return (int)(readl(pci_doorbell
) & 0xff);
1547 cy_writel(&board_ctrl
->hcmd_channel
, channel
);
1548 cy_writel(&board_ctrl
->hcmd_param
, param
);
1549 cy_writel(pci_doorbell
, (long)cmd
);
1552 } /* cyz_issue_cmd */
1555 cyz_handle_rx(struct cyclades_port
*info
, struct CH_CTRL __iomem
*ch_ctrl
,
1556 struct BUF_CTRL __iomem
*buf_ctrl
)
1558 struct cyclades_card
*cinfo
= info
->card
;
1559 struct tty_struct
*tty
= info
->tty
;
1567 __u32 rx_put
, rx_get
, new_rx_get
, rx_bufsize
, rx_bufaddr
;
1569 rx_get
= new_rx_get
= readl(&buf_ctrl
->rx_get
);
1570 rx_put
= readl(&buf_ctrl
->rx_put
);
1571 rx_bufsize
= readl(&buf_ctrl
->rx_bufsize
);
1572 rx_bufaddr
= readl(&buf_ctrl
->rx_bufaddr
);
1573 if (rx_put
>= rx_get
)
1574 char_count
= rx_put
- rx_get
;
1576 char_count
= rx_put
- rx_get
+ rx_bufsize
;
1579 info
->last_active
= jiffies
;
1580 info
->jiffies
[1] = jiffies
;
1582 #ifdef CY_ENABLE_MONITORING
1583 info
->mon
.int_count
++;
1584 info
->mon
.char_count
+= char_count
;
1585 if (char_count
> info
->mon
.char_max
)
1586 info
->mon
.char_max
= char_count
;
1587 info
->mon
.char_last
= char_count
;
1590 /* flush received characters */
1591 new_rx_get
= (new_rx_get
+ char_count
) &
1593 info
->rflush_count
++;
1596 /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
1597 for performance, but because of buffer boundaries, there
1598 may be several steps to the operation */
1600 len
= tty_prepare_flip_string(tty
, &buf
,
1605 len
= min_t(unsigned int, min(len
, char_count
),
1606 rx_bufsize
- new_rx_get
);
1608 memcpy_fromio(buf
, cinfo
->base_addr
+
1609 rx_bufaddr
+ new_rx_get
, len
);
1611 new_rx_get
= (new_rx_get
+ len
) &
1614 info
->icount
.rx
+= len
;
1615 info
->idle_stats
.recv_bytes
+= len
;
1618 len
= tty_buffer_request_room(tty
, char_count
);
1620 data
= readb(cinfo
->base_addr
+ rx_bufaddr
+
1622 new_rx_get
= (new_rx_get
+ 1)& (rx_bufsize
- 1);
1623 tty_insert_flip_char(tty
, data
, TTY_NORMAL
);
1624 info
->idle_stats
.recv_bytes
++;
1628 #ifdef CONFIG_CYZ_INTR
1629 /* Recalculate the number of chars in the RX buffer and issue
1630 a cmd in case it's higher than the RX high water mark */
1631 rx_put
= readl(&buf_ctrl
->rx_put
);
1632 if (rx_put
>= rx_get
)
1633 char_count
= rx_put
- rx_get
;
1635 char_count
= rx_put
- rx_get
+ rx_bufsize
;
1636 if (char_count
>= (int)readl(&buf_ctrl
->rx_threshold
)) {
1637 cy_sched_event(info
, Cy_EVENT_Z_RX_FULL
);
1640 info
->idle_stats
.recv_idle
= jiffies
;
1641 tty_schedule_flip(tty
);
1644 cy_writel(&buf_ctrl
->rx_get
, new_rx_get
);
1649 cyz_handle_tx(struct cyclades_port
*info
, struct CH_CTRL __iomem
*ch_ctrl
,
1650 struct BUF_CTRL __iomem
*buf_ctrl
)
1652 struct cyclades_card
*cinfo
= info
->card
;
1653 struct tty_struct
*tty
= info
->tty
;
1659 __u32 tx_put
, tx_get
, tx_bufsize
, tx_bufaddr
;
1661 if (info
->xmit_cnt
<= 0) /* Nothing to transmit */
1664 tx_get
= readl(&buf_ctrl
->tx_get
);
1665 tx_put
= readl(&buf_ctrl
->tx_put
);
1666 tx_bufsize
= readl(&buf_ctrl
->tx_bufsize
);
1667 tx_bufaddr
= readl(&buf_ctrl
->tx_bufaddr
);
1668 if (tx_put
>= tx_get
)
1669 char_count
= tx_get
- tx_put
- 1 + tx_bufsize
;
1671 char_count
= tx_get
- tx_put
- 1;
1679 if (info
->x_char
) { /* send special char */
1680 data
= info
->x_char
;
1682 cy_writeb(cinfo
->base_addr
+ tx_bufaddr
+ tx_put
, data
);
1683 tx_put
= (tx_put
+ 1) & (tx_bufsize
- 1);
1687 info
->last_active
= jiffies
;
1688 info
->jiffies
[2] = jiffies
;
1691 while (0 < (small_count
= min_t(unsigned int,
1692 tx_bufsize
- tx_put
, min_t(unsigned int,
1693 (SERIAL_XMIT_SIZE
- info
->xmit_tail
),
1694 min_t(unsigned int, info
->xmit_cnt
,
1697 memcpy_toio((char *)(cinfo
->base_addr
+ tx_bufaddr
+
1699 &info
->xmit_buf
[info
->xmit_tail
],
1702 tx_put
= (tx_put
+ small_count
) & (tx_bufsize
- 1);
1703 char_count
-= small_count
;
1704 info
->icount
.tx
+= small_count
;
1705 info
->xmit_cnt
-= small_count
;
1706 info
->xmit_tail
= (info
->xmit_tail
+ small_count
) &
1707 (SERIAL_XMIT_SIZE
- 1);
1708 info
->last_active
= jiffies
;
1709 info
->jiffies
[2] = jiffies
;
1712 while (info
->xmit_cnt
&& char_count
) {
1713 data
= info
->xmit_buf
[info
->xmit_tail
];
1715 info
->xmit_tail
= (info
->xmit_tail
+ 1) &
1716 (SERIAL_XMIT_SIZE
- 1);
1718 cy_writeb(cinfo
->base_addr
+ tx_bufaddr
+ tx_put
, data
);
1719 tx_put
= (tx_put
+ 1) & (tx_bufsize
- 1);
1722 info
->last_active
= jiffies
;
1723 info
->jiffies
[2] = jiffies
;
1727 if (info
->xmit_cnt
< WAKEUP_CHARS
) {
1728 cy_sched_event(info
, Cy_EVENT_WRITE_WAKEUP
);
1731 cy_writel(&buf_ctrl
->tx_put
, tx_put
);
1735 static void cyz_handle_cmd(struct cyclades_card
*cinfo
)
1737 struct tty_struct
*tty
;
1738 struct cyclades_port
*info
;
1739 static struct FIRM_ID __iomem
*firm_id
;
1740 static struct ZFW_CTRL __iomem
*zfw_ctrl
;
1741 static struct BOARD_CTRL __iomem
*board_ctrl
;
1742 static struct CH_CTRL __iomem
*ch_ctrl
;
1743 static struct BUF_CTRL __iomem
*buf_ctrl
;
1747 __u32 hw_ver
, fw_ver
;
1751 firm_id
= cinfo
->base_addr
+ ID_ADDRESS
;
1752 zfw_ctrl
= cinfo
->base_addr
+ (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
1753 board_ctrl
= &zfw_ctrl
->board_ctrl
;
1754 fw_ver
= readl(&board_ctrl
->fw_version
);
1755 hw_ver
= readl(&((struct RUNTIME_9060 __iomem
*)(cinfo
->ctl_addr
))->
1758 while (cyz_fetch_msg(cinfo
, &channel
, &cmd
, ¶m
) == 1) {
1761 info
= &cy_port
[channel
+ cinfo
->first_line
];
1762 if ((tty
= info
->tty
) == 0) {
1765 ch_ctrl
= &(zfw_ctrl
->ch_ctrl
[channel
]);
1766 buf_ctrl
= &(zfw_ctrl
->buf_ctrl
[channel
]);
1770 tty_insert_flip_char(tty
, 0, TTY_PARITY
);
1775 tty_insert_flip_char(tty
, 0, TTY_FRAME
);
1780 tty_insert_flip_char(tty
, 0, TTY_BREAK
);
1787 if (info
->flags
& ASYNC_CHECK_CD
) {
1788 if ((fw_ver
> 241 ? ((u_long
) param
) :
1789 readl(&ch_ctrl
->rs_status
)) &
1791 cy_sched_event(info
,
1792 Cy_EVENT_OPEN_WAKEUP
);
1794 cy_sched_event(info
, Cy_EVENT_HANGUP
);
1812 cy_sched_event(info
, Cy_EVENT_SHUTDOWN_WAKEUP
);
1815 #ifdef CONFIG_CYZ_INTR
1819 /* Reception Interrupt */
1820 #ifdef CY_DEBUG_INTERRUPTS
1821 printk(KERN_DEBUG
"cyz_interrupt: rcvd intr, card %d, "
1822 "port %ld\n", info
->card
, channel
);
1824 cyz_handle_rx(info
, ch_ctrl
, buf_ctrl
);
1829 /* Transmission Interrupt */
1830 #ifdef CY_DEBUG_INTERRUPTS
1831 printk(KERN_DEBUG
"cyz_interrupt: xmit intr, card %d, "
1832 "port %ld\n", info
->card
, channel
);
1834 cyz_handle_tx(info
, ch_ctrl
, buf_ctrl
);
1836 #endif /* CONFIG_CYZ_INTR */
1838 /* should do something with this !!! */
1844 cy_sched_event(info
, Cy_EVENT_DELTA_WAKEUP
);
1846 tty_schedule_flip(tty
);
1850 #ifdef CONFIG_CYZ_INTR
1851 static irqreturn_t
cyz_interrupt(int irq
, void *dev_id
)
1853 struct cyclades_card
*cinfo
;
1855 if ((cinfo
= (struct cyclades_card
*)dev_id
) == 0) {
1856 #ifdef CY_DEBUG_INTERRUPTS
1857 printk(KERN_DEBUG
"cyz_interrupt: spurious interrupt %d\n",irq
);
1859 return IRQ_NONE
; /* spurious interrupt */
1862 if (!ISZLOADED(*cinfo
)) {
1863 #ifdef CY_DEBUG_INTERRUPTS
1864 printk(KERN_DEBUG
"cyz_interrupt: board not yet loaded "
1870 /* Handle the interrupts */
1871 cyz_handle_cmd(cinfo
);
1874 } /* cyz_interrupt */
1876 static void cyz_rx_restart(unsigned long arg
)
1878 struct cyclades_port
*info
= (struct cyclades_port
*)arg
;
1879 struct cyclades_card
*card
= info
->card
;
1881 __u32 channel
= info
->line
- card
->first_line
;
1882 unsigned long flags
;
1884 CY_LOCK(info
, flags
);
1885 retval
= cyz_issue_cmd(card
, channel
, C_CM_INTBACK2
, 0L);
1887 printk(KERN_ERR
"cyc:cyz_rx_restart retval on ttyC%d was %x\n",
1888 info
->line
, retval
);
1890 cyz_rx_full_timer
[info
->line
].function
= NULL
;
1891 CY_UNLOCK(info
, flags
);
1894 #else /* CONFIG_CYZ_INTR */
1896 static void cyz_poll(unsigned long arg
)
1898 struct cyclades_card
*cinfo
;
1899 struct cyclades_port
*info
;
1900 struct tty_struct
*tty
;
1901 static struct FIRM_ID
*firm_id
;
1902 static struct ZFW_CTRL
*zfw_ctrl
;
1903 static struct BOARD_CTRL
*board_ctrl
;
1904 static struct CH_CTRL
*ch_ctrl
;
1905 static struct BUF_CTRL
*buf_ctrl
;
1906 unsigned long expires
= jiffies
+ HZ
;
1909 for (card
= 0; card
< NR_CARDS
; card
++) {
1910 cinfo
= &cy_card
[card
];
1912 if (!IS_CYC_Z(*cinfo
))
1914 if (!ISZLOADED(*cinfo
))
1917 firm_id
= cinfo
->base_addr
+ ID_ADDRESS
;
1918 zfw_ctrl
= cinfo
->base_addr
+
1919 (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
1920 board_ctrl
= &(zfw_ctrl
->board_ctrl
);
1922 /* Skip first polling cycle to avoid racing conditions with the FW */
1923 if (!cinfo
->intr_enabled
) {
1924 cinfo
->nports
= (int)readl(&board_ctrl
->n_channel
);
1925 cinfo
->intr_enabled
= 1;
1929 cyz_handle_cmd(cinfo
);
1931 for (port
= 0; port
< cinfo
->nports
; port
++) {
1932 info
= &cy_port
[port
+ cinfo
->first_line
];
1934 ch_ctrl
= &(zfw_ctrl
->ch_ctrl
[port
]);
1935 buf_ctrl
= &(zfw_ctrl
->buf_ctrl
[port
]);
1937 if (!info
->throttle
)
1938 cyz_handle_rx(info
, ch_ctrl
, buf_ctrl
);
1939 cyz_handle_tx(info
, ch_ctrl
, buf_ctrl
);
1941 /* poll every 'cyz_polling_cycle' period */
1942 expires
= jiffies
+ cyz_polling_cycle
;
1944 mod_timer(&cyz_timerlist
, expires
);
1947 #endif /* CONFIG_CYZ_INTR */
1949 /********** End of block of Cyclades-Z specific code *********/
1950 /***********************************************************/
1952 /* This is called whenever a port becomes active;
1953 interrupts are enabled and DTR & RTS are turned on.
1955 static int startup(struct cyclades_port
*info
)
1957 struct cyclades_card
*card
;
1958 unsigned long flags
;
1960 void __iomem
*base_addr
;
1961 int chip
, channel
, index
;
1965 channel
= info
->line
- card
->first_line
;
1967 page
= get_zeroed_page(GFP_KERNEL
);
1971 CY_LOCK(info
, flags
);
1973 if (info
->flags
& ASYNC_INITIALIZED
) {
1980 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
1989 info
->xmit_buf
= (unsigned char *)page
;
1991 CY_UNLOCK(info
, flags
);
1993 set_line_char(info
);
1995 if (!IS_CYC_Z(*card
)) {
1996 chip
= channel
>> 2;
1998 index
= card
->bus_index
;
1999 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
2001 #ifdef CY_DEBUG_OPEN
2002 printk(KERN_DEBUG
"cyc startup card %d, chip %d, channel %d, "
2004 card
, chip
, channel
, base_addr
);
2006 CY_LOCK(info
, flags
);
2008 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) channel
);
2010 cy_writeb(base_addr
+ (CyRTPR
<< index
),
2011 (info
->default_timeout
? info
->default_timeout
: 0x02));
2012 /* 10ms rx timeout */
2014 cyy_issue_cmd(base_addr
, CyCHAN_CTL
| CyENB_RCVR
| CyENB_XMTR
,
2017 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) channel
);
2018 cy_writeb(base_addr
+ (CyMSVR1
<< index
), CyRTS
);
2019 cy_writeb(base_addr
+ (CyMSVR2
<< index
), CyDTR
);
2022 printk(KERN_DEBUG
"cyc:startup raising DTR\n");
2023 printk(KERN_DEBUG
" status: 0x%x, 0x%x\n",
2024 readb(base_addr
+ (CyMSVR1
<< index
)),
2025 readb(base_addr
+ (CyMSVR2
<< index
)));
2028 cy_writeb(base_addr
+ (CySRER
<< index
),
2029 readb(base_addr
+ (CySRER
<< index
)) | CyRxData
);
2030 info
->flags
|= ASYNC_INITIALIZED
;
2033 clear_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2035 info
->xmit_cnt
= info
->xmit_head
= info
->xmit_tail
= 0;
2036 info
->breakon
= info
->breakoff
= 0;
2037 memset((char *)&info
->idle_stats
, 0, sizeof(info
->idle_stats
));
2038 info
->idle_stats
.in_use
=
2039 info
->idle_stats
.recv_idle
=
2040 info
->idle_stats
.xmit_idle
= jiffies
;
2042 CY_UNLOCK(info
, flags
);
2045 struct FIRM_ID __iomem
*firm_id
;
2046 struct ZFW_CTRL __iomem
*zfw_ctrl
;
2047 struct BOARD_CTRL __iomem
*board_ctrl
;
2048 struct CH_CTRL __iomem
*ch_ctrl
;
2051 base_addr
= card
->base_addr
;
2053 firm_id
= base_addr
+ ID_ADDRESS
;
2054 if (!ISZLOADED(*card
)) {
2058 zfw_ctrl
= card
->base_addr
+
2059 (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
2060 board_ctrl
= &zfw_ctrl
->board_ctrl
;
2061 ch_ctrl
= zfw_ctrl
->ch_ctrl
;
2063 #ifdef CY_DEBUG_OPEN
2064 printk(KERN_DEBUG
"cyc startup Z card %d, channel %d, "
2065 "base_addr %p\n", card
, channel
, base_addr
);
2067 CY_LOCK(info
, flags
);
2069 cy_writel(&ch_ctrl
[channel
].op_mode
, C_CH_ENABLE
);
2071 #ifdef CONFIG_CYZ_INTR
2072 cy_writel(&ch_ctrl
[channel
].intr_enable
,
2073 C_IN_TXBEMPTY
| C_IN_TXLOWWM
| C_IN_RXHIWM
|
2074 C_IN_RXNNDT
| C_IN_IOCTLW
| C_IN_MDCD
);
2076 cy_writel(&ch_ctrl
[channel
].intr_enable
,
2077 C_IN_IOCTLW
| C_IN_MDCD
);
2078 #endif /* CONFIG_CYZ_INTR */
2080 #ifdef CONFIG_CYZ_INTR
2081 cy_writel(&ch_ctrl
[channel
].intr_enable
,
2082 C_IN_TXBEMPTY
| C_IN_TXLOWWM
| C_IN_RXHIWM
|
2083 C_IN_RXNNDT
| C_IN_MDCD
);
2085 cy_writel(&ch_ctrl
[channel
].intr_enable
, C_IN_MDCD
);
2086 #endif /* CONFIG_CYZ_INTR */
2089 retval
= cyz_issue_cmd(card
, channel
, C_CM_IOCTL
, 0L);
2091 printk(KERN_ERR
"cyc:startup(1) retval on ttyC%d was "
2092 "%x\n", info
->line
, retval
);
2095 /* Flush RX buffers before raising DTR and RTS */
2096 retval
= cyz_issue_cmd(card
, channel
, C_CM_FLUSH_RX
, 0L);
2098 printk(KERN_ERR
"cyc:startup(2) retval on ttyC%d was "
2099 "%x\n", info
->line
, retval
);
2102 /* set timeout !!! */
2103 /* set RTS and DTR !!! */
2104 cy_writel(&ch_ctrl
[channel
].rs_control
,
2105 readl(&ch_ctrl
[channel
].rs_control
) | C_RS_RTS
|
2107 retval
= cyz_issue_cmd(info
->card
, channel
,
2110 printk(KERN_ERR
"cyc:startup(3) retval on ttyC%d was "
2111 "%x\n", info
->line
, retval
);
2114 printk(KERN_DEBUG
"cyc:startup raising Z DTR\n");
2117 /* enable send, recv, modem !!! */
2119 info
->flags
|= ASYNC_INITIALIZED
;
2121 clear_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2123 info
->xmit_cnt
= info
->xmit_head
= info
->xmit_tail
= 0;
2124 info
->breakon
= info
->breakoff
= 0;
2125 memset((char *)&info
->idle_stats
, 0, sizeof(info
->idle_stats
));
2126 info
->idle_stats
.in_use
=
2127 info
->idle_stats
.recv_idle
=
2128 info
->idle_stats
.xmit_idle
= jiffies
;
2130 CY_UNLOCK(info
, flags
);
2133 #ifdef CY_DEBUG_OPEN
2134 printk(KERN_DEBUG
"cyc startup done\n");
2139 CY_UNLOCK(info
, flags
);
2143 static void start_xmit(struct cyclades_port
*info
)
2145 struct cyclades_card
*card
;
2146 unsigned long flags
;
2147 void __iomem
*base_addr
;
2148 int chip
, channel
, index
;
2151 channel
= info
->line
- card
->first_line
;
2152 if (!IS_CYC_Z(*card
)) {
2153 chip
= channel
>> 2;
2155 index
= card
->bus_index
;
2156 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
2158 CY_LOCK(info
, flags
);
2159 cy_writeb(base_addr
+ (CyCAR
<< index
), channel
);
2160 cy_writeb(base_addr
+ (CySRER
<< index
),
2161 readb(base_addr
+ (CySRER
<< index
)) | CyTxRdy
);
2162 CY_UNLOCK(info
, flags
);
2164 #ifdef CONFIG_CYZ_INTR
2167 CY_LOCK(info
, flags
);
2168 retval
= cyz_issue_cmd(card
, channel
, C_CM_INTBACK
, 0L);
2170 printk(KERN_ERR
"cyc:start_xmit retval on ttyC%d was "
2171 "%x\n", info
->line
, retval
);
2173 CY_UNLOCK(info
, flags
);
2174 #else /* CONFIG_CYZ_INTR */
2175 /* Don't have to do anything at this time */
2176 #endif /* CONFIG_CYZ_INTR */
2181 * This routine shuts down a serial port; interrupts are disabled,
2182 * and DTR is dropped if the hangup on close termio flag is on.
2184 static void shutdown(struct cyclades_port
*info
)
2186 struct cyclades_card
*card
;
2187 unsigned long flags
;
2188 void __iomem
*base_addr
;
2189 int chip
, channel
, index
;
2191 if (!(info
->flags
& ASYNC_INITIALIZED
)) {
2196 channel
= info
->line
- card
->first_line
;
2197 if (!IS_CYC_Z(*card
)) {
2198 chip
= channel
>> 2;
2200 index
= card
->bus_index
;
2201 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
2203 #ifdef CY_DEBUG_OPEN
2204 printk(KERN_DEBUG
"cyc shutdown Y card %d, chip %d, "
2205 "channel %d, base_addr %p\n",
2206 card
, chip
, channel
, base_addr
);
2209 CY_LOCK(info
, flags
);
2211 /* Clear delta_msr_wait queue to avoid mem leaks. */
2212 wake_up_interruptible(&info
->delta_msr_wait
);
2214 if (info
->xmit_buf
) {
2215 unsigned char *temp
;
2216 temp
= info
->xmit_buf
;
2217 info
->xmit_buf
= NULL
;
2218 free_page((unsigned long)temp
);
2220 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) channel
);
2221 if (!info
->tty
|| (info
->tty
->termios
->c_cflag
& HUPCL
)) {
2222 cy_writeb(base_addr
+ (CyMSVR1
<< index
), ~CyRTS
);
2223 cy_writeb(base_addr
+ (CyMSVR2
<< index
), ~CyDTR
);
2225 printk(KERN_DEBUG
"cyc shutdown dropping DTR\n");
2226 printk(KERN_DEBUG
" status: 0x%x, 0x%x\n",
2227 readb(base_addr
+ (CyMSVR1
<< index
)),
2228 readb(base_addr
+ (CyMSVR2
<< index
)));
2231 cyy_issue_cmd(base_addr
, CyCHAN_CTL
| CyDIS_RCVR
, index
);
2232 /* it may be appropriate to clear _XMIT at
2233 some later date (after testing)!!! */
2236 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2238 info
->flags
&= ~ASYNC_INITIALIZED
;
2239 CY_UNLOCK(info
, flags
);
2241 struct FIRM_ID __iomem
*firm_id
;
2242 struct ZFW_CTRL __iomem
*zfw_ctrl
;
2243 struct BOARD_CTRL __iomem
*board_ctrl
;
2244 struct CH_CTRL __iomem
*ch_ctrl
;
2247 base_addr
= card
->base_addr
;
2248 #ifdef CY_DEBUG_OPEN
2249 printk(KERN_DEBUG
"cyc shutdown Z card %d, channel %d, "
2250 "base_addr %p\n", card
, channel
, base_addr
);
2253 firm_id
= base_addr
+ ID_ADDRESS
;
2254 if (!ISZLOADED(*card
)) {
2258 zfw_ctrl
= card
->base_addr
+
2259 (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
2260 board_ctrl
= &zfw_ctrl
->board_ctrl
;
2261 ch_ctrl
= zfw_ctrl
->ch_ctrl
;
2263 CY_LOCK(info
, flags
);
2265 if (info
->xmit_buf
) {
2266 unsigned char *temp
;
2267 temp
= info
->xmit_buf
;
2268 info
->xmit_buf
= NULL
;
2269 free_page((unsigned long)temp
);
2272 if (!info
->tty
|| (info
->tty
->termios
->c_cflag
& HUPCL
)) {
2273 cy_writel(&ch_ctrl
[channel
].rs_control
,
2274 (__u32
)(readl(&ch_ctrl
[channel
].rs_control
) &
2275 ~(C_RS_RTS
| C_RS_DTR
)));
2276 retval
= cyz_issue_cmd(info
->card
, channel
,
2279 printk(KERN_ERR
"cyc:shutdown retval on ttyC%d "
2280 "was %x\n", info
->line
, retval
);
2283 printk(KERN_DEBUG
"cyc:shutdown dropping Z DTR\n");
2288 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2290 info
->flags
&= ~ASYNC_INITIALIZED
;
2292 CY_UNLOCK(info
, flags
);
2295 #ifdef CY_DEBUG_OPEN
2296 printk(KERN_DEBUG
"cyc shutdown done\n");
2301 * ------------------------------------------------------------
2302 * cy_open() and friends
2303 * ------------------------------------------------------------
2307 block_til_ready(struct tty_struct
*tty
, struct file
*filp
,
2308 struct cyclades_port
*info
)
2310 DECLARE_WAITQUEUE(wait
, current
);
2311 struct cyclades_card
*cinfo
;
2312 unsigned long flags
;
2313 int chip
, channel
, index
;
2315 void __iomem
*base_addr
;
2318 channel
= info
->line
- cinfo
->first_line
;
2321 * If the device is in the middle of being closed, then block
2322 * until it's done, and then try again.
2324 if (tty_hung_up_p(filp
) || (info
->flags
& ASYNC_CLOSING
)) {
2325 wait_event_interruptible(info
->close_wait
,
2326 !(info
->flags
& ASYNC_CLOSING
));
2327 return (info
->flags
& ASYNC_HUP_NOTIFY
) ? -EAGAIN
: -ERESTARTSYS
;
2331 * If non-blocking mode is set, then make the check up front
2334 if ((filp
->f_flags
& O_NONBLOCK
) || (tty
->flags
& (1 << TTY_IO_ERROR
))) {
2335 info
->flags
|= ASYNC_NORMAL_ACTIVE
;
2340 * Block waiting for the carrier detect and the line to become
2341 * free (i.e., not in use by the callout). While we are in
2342 * this loop, info->count is dropped by one, so that
2343 * cy_close() knows when to free things. We restore it upon
2344 * exit, either normal or abnormal.
2347 add_wait_queue(&info
->open_wait
, &wait
);
2348 #ifdef CY_DEBUG_OPEN
2349 printk(KERN_DEBUG
"cyc block_til_ready before block: ttyC%d, "
2350 "count = %d\n", info
->line
, info
->count
);
2352 CY_LOCK(info
, flags
);
2353 if (!tty_hung_up_p(filp
))
2355 CY_UNLOCK(info
, flags
);
2356 #ifdef CY_DEBUG_COUNT
2357 printk(KERN_DEBUG
"cyc block_til_ready: (%d): decrementing count to "
2358 "%d\n", current
->pid
, info
->count
);
2360 info
->blocked_open
++;
2362 if (!IS_CYC_Z(*cinfo
)) {
2363 chip
= channel
>> 2;
2365 index
= cinfo
->bus_index
;
2366 base_addr
= cinfo
->base_addr
+ (cy_chip_offset
[chip
] << index
);
2369 CY_LOCK(info
, flags
);
2370 if ((tty
->termios
->c_cflag
& CBAUD
)) {
2371 cy_writeb(base_addr
+ (CyCAR
<< index
),
2373 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
2375 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
2378 printk(KERN_DEBUG
"cyc:block_til_ready raising "
2380 printk(KERN_DEBUG
" status: 0x%x, 0x%x\n",
2381 readb(base_addr
+ (CyMSVR1
<< index
)),
2382 readb(base_addr
+ (CyMSVR2
<< index
)));
2385 CY_UNLOCK(info
, flags
);
2387 set_current_state(TASK_INTERRUPTIBLE
);
2388 if (tty_hung_up_p(filp
) ||
2389 !(info
->flags
& ASYNC_INITIALIZED
)) {
2390 retval
= ((info
->flags
& ASYNC_HUP_NOTIFY
) ?
2391 -EAGAIN
: -ERESTARTSYS
);
2395 CY_LOCK(info
, flags
);
2396 cy_writeb(base_addr
+ (CyCAR
<< index
),
2398 if (!(info
->flags
& ASYNC_CLOSING
) && (C_CLOCAL(tty
) ||
2400 (CyMSVR1
<< index
)) & CyDCD
))) {
2401 CY_UNLOCK(info
, flags
);
2404 CY_UNLOCK(info
, flags
);
2406 if (signal_pending(current
)) {
2407 retval
= -ERESTARTSYS
;
2410 #ifdef CY_DEBUG_OPEN
2411 printk(KERN_DEBUG
"cyc block_til_ready blocking: "
2412 "ttyC%d, count = %d\n",
2413 info
->line
, info
->count
);
2418 struct FIRM_ID __iomem
*firm_id
;
2419 struct ZFW_CTRL __iomem
*zfw_ctrl
;
2420 struct BOARD_CTRL __iomem
*board_ctrl
;
2421 struct CH_CTRL __iomem
*ch_ctrl
;
2424 base_addr
= cinfo
->base_addr
;
2425 firm_id
= base_addr
+ ID_ADDRESS
;
2426 if (!ISZLOADED(*cinfo
)) {
2427 __set_current_state(TASK_RUNNING
);
2428 remove_wait_queue(&info
->open_wait
, &wait
);
2432 zfw_ctrl
= base_addr
+ (readl(&firm_id
->zfwctrl_addr
)& 0xfffff);
2433 board_ctrl
= &zfw_ctrl
->board_ctrl
;
2434 ch_ctrl
= zfw_ctrl
->ch_ctrl
;
2437 if ((tty
->termios
->c_cflag
& CBAUD
)) {
2438 cy_writel(&ch_ctrl
[channel
].rs_control
,
2439 readl(&ch_ctrl
[channel
].rs_control
) |
2440 C_RS_RTS
| C_RS_DTR
);
2441 retval
= cyz_issue_cmd(info
->card
,
2442 channel
, C_CM_IOCTLM
, 0L);
2444 printk(KERN_ERR
"cyc:block_til_ready "
2445 "retval on ttyC%d was %x\n",
2446 info
->line
, retval
);
2449 printk(KERN_DEBUG
"cyc:block_til_ready raising "
2454 set_current_state(TASK_INTERRUPTIBLE
);
2455 if (tty_hung_up_p(filp
) ||
2456 !(info
->flags
& ASYNC_INITIALIZED
)) {
2457 retval
= ((info
->flags
& ASYNC_HUP_NOTIFY
) ?
2458 -EAGAIN
: -ERESTARTSYS
);
2461 if (!(info
->flags
& ASYNC_CLOSING
) && (C_CLOCAL(tty
) ||
2462 (readl(&ch_ctrl
[channel
].rs_status
) &
2466 if (signal_pending(current
)) {
2467 retval
= -ERESTARTSYS
;
2470 #ifdef CY_DEBUG_OPEN
2471 printk(KERN_DEBUG
"cyc block_til_ready blocking: "
2472 "ttyC%d, count = %d\n",
2473 info
->line
, info
->count
);
2478 __set_current_state(TASK_RUNNING
);
2479 remove_wait_queue(&info
->open_wait
, &wait
);
2480 if (!tty_hung_up_p(filp
)) {
2482 #ifdef CY_DEBUG_COUNT
2483 printk(KERN_DEBUG
"cyc:block_til_ready (%d): incrementing "
2484 "count to %d\n", current
->pid
, info
->count
);
2487 info
->blocked_open
--;
2488 #ifdef CY_DEBUG_OPEN
2489 printk(KERN_DEBUG
"cyc:block_til_ready after blocking: ttyC%d, "
2490 "count = %d\n", info
->line
, info
->count
);
2494 info
->flags
|= ASYNC_NORMAL_ACTIVE
;
2496 } /* block_til_ready */
2499 * This routine is called whenever a serial port is opened. It
2500 * performs the serial-specific initialization for the tty structure.
2502 static int cy_open(struct tty_struct
*tty
, struct file
*filp
)
2504 struct cyclades_port
*info
;
2508 if ((line
< 0) || (NR_PORTS
<= line
)) {
2511 info
= &cy_port
[line
];
2512 if (info
->line
< 0) {
2516 /* If the card's firmware hasn't been loaded,
2517 treat it as absent from the system. This
2518 will make the user pay attention.
2520 if (IS_CYC_Z(*info
->card
)) {
2521 struct cyclades_card
*cinfo
= info
->card
;
2522 struct FIRM_ID __iomem
*firm_id
= cinfo
->base_addr
+ ID_ADDRESS
;
2524 if (!ISZLOADED(*cinfo
)) {
2525 if (((ZE_V1
== readl(&((struct RUNTIME_9060 __iomem
*)
2526 (cinfo
->ctl_addr
))->mail_box_0
)) &&
2527 Z_FPGA_CHECK(*cinfo
)) &&
2528 (ZFIRM_HLT
== readl(
2529 &firm_id
->signature
))) {
2530 printk(KERN_ERR
"cyc:Cyclades-Z Error: you "
2531 "need an external power supply for "
2532 "this number of ports.\nFirmware "
2535 printk(KERN_ERR
"cyc:Cyclades-Z firmware not "
2540 #ifdef CONFIG_CYZ_INTR
2542 /* In case this Z board is operating in interrupt mode, its
2543 interrupts should be enabled as soon as the first open
2544 happens to one of its ports. */
2545 if (!cinfo
->intr_enabled
) {
2546 struct ZFW_CTRL __iomem
*zfw_ctrl
;
2547 struct BOARD_CTRL __iomem
*board_ctrl
;
2549 zfw_ctrl
= cinfo
->base_addr
+
2550 (readl(&firm_id
->zfwctrl_addr
) &
2553 board_ctrl
= &zfw_ctrl
->board_ctrl
;
2555 /* Enable interrupts on the PLX chip */
2556 cy_writew(cinfo
->ctl_addr
+ 0x68,
2557 readw(cinfo
->ctl_addr
+ 0x68) | 0x0900);
2558 /* Enable interrupts on the FW */
2559 retval
= cyz_issue_cmd(cinfo
, 0,
2562 printk(KERN_ERR
"cyc:IRQ enable retval "
2563 "was %x\n", retval
);
2566 (int)readl(&board_ctrl
->n_channel
);
2567 cinfo
->intr_enabled
= 1;
2570 #endif /* CONFIG_CYZ_INTR */
2571 /* Make sure this Z port really exists in hardware */
2572 if (info
->line
> (cinfo
->first_line
+ cinfo
->nports
- 1))
2575 #ifdef CY_DEBUG_OTHER
2576 printk(KERN_DEBUG
"cyc:cy_open ttyC%d\n", info
->line
);
2578 tty
->driver_data
= info
;
2580 if (serial_paranoia_check(info
, tty
->name
, "cy_open")) {
2583 #ifdef CY_DEBUG_OPEN
2584 printk(KERN_DEBUG
"cyc:cy_open ttyC%d, count = %d\n", info
->line
,
2588 #ifdef CY_DEBUG_COUNT
2589 printk(KERN_DEBUG
"cyc:cy_open (%d): incrementing count to %d\n",
2590 current
->pid
, info
->count
);
2594 * If the port is the middle of closing, bail out now
2596 if (tty_hung_up_p(filp
) || (info
->flags
& ASYNC_CLOSING
)) {
2597 wait_event_interruptible(info
->close_wait
,
2598 !(info
->flags
& ASYNC_CLOSING
));
2599 return (info
->flags
& ASYNC_HUP_NOTIFY
) ? -EAGAIN
: -ERESTARTSYS
;
2603 * Start up serial port
2605 retval
= startup(info
);
2610 retval
= block_til_ready(tty
, filp
, info
);
2612 #ifdef CY_DEBUG_OPEN
2613 printk(KERN_DEBUG
"cyc:cy_open returning after block_til_ready "
2614 "with %d\n", retval
);
2621 #ifdef CY_DEBUG_OPEN
2622 printk(KERN_DEBUG
"cyc:cy_open done\n");
2628 * cy_wait_until_sent() --- wait until the transmitter is empty
2630 static void cy_wait_until_sent(struct tty_struct
*tty
, int timeout
)
2632 struct cyclades_card
*card
;
2633 struct cyclades_port
*info
= tty
->driver_data
;
2634 void __iomem
*base_addr
;
2635 int chip
, channel
, index
;
2636 unsigned long orig_jiffies
;
2639 if (serial_paranoia_check(info
, tty
->name
, "cy_wait_until_sent"))
2642 if (info
->xmit_fifo_size
== 0)
2643 return; /* Just in case.... */
2645 orig_jiffies
= jiffies
;
2647 * Set the check interval to be 1/5 of the estimated time to
2648 * send a single character, and make it at least 1. The check
2649 * interval should also be less than the timeout.
2651 * Note: we have to use pretty tight timings here to satisfy
2654 char_time
= (info
->timeout
- HZ
/ 50) / info
->xmit_fifo_size
;
2655 char_time
= char_time
/ 5;
2661 char_time
= min(char_time
, timeout
);
2663 * If the transmitter hasn't cleared in twice the approximate
2664 * amount of time to send the entire FIFO, it probably won't
2665 * ever clear. This assumes the UART isn't doing flow
2666 * control, which is currently the case. Hence, if it ever
2667 * takes longer than info->timeout, this is probably due to a
2668 * UART bug of some kind. So, we clamp the timeout parameter at
2671 if (!timeout
|| timeout
> 2 * info
->timeout
)
2672 timeout
= 2 * info
->timeout
;
2673 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2674 printk(KERN_DEBUG
"In cy_wait_until_sent(%d) check=%d, jiff=%lu...",
2675 timeout
, char_time
, jiffies
);
2678 channel
= (info
->line
) - (card
->first_line
);
2679 if (!IS_CYC_Z(*card
)) {
2680 chip
= channel
>> 2;
2682 index
= card
->bus_index
;
2683 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
2684 while (readb(base_addr
+ (CySRER
<< index
)) & CyTxRdy
) {
2685 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2686 printk(KERN_DEBUG
"Not clean (jiff=%lu)...", jiffies
);
2688 if (msleep_interruptible(jiffies_to_msecs(char_time
)))
2690 if (timeout
&& time_after(jiffies
, orig_jiffies
+
2695 /* Nothing to do! */
2697 /* Run one more char cycle */
2698 msleep_interruptible(jiffies_to_msecs(char_time
* 5));
2699 #ifdef CY_DEBUG_WAIT_UNTIL_SENT
2700 printk(KERN_DEBUG
"Clean (jiff=%lu)...done\n", jiffies
);
2705 * This routine is called when a particular tty device is closed.
2707 static void cy_close(struct tty_struct
*tty
, struct file
*filp
)
2709 struct cyclades_port
*info
= tty
->driver_data
;
2710 unsigned long flags
;
2712 #ifdef CY_DEBUG_OTHER
2713 printk(KERN_DEBUG
"cyc:cy_close ttyC%d\n", info
->line
);
2716 if (!info
|| serial_paranoia_check(info
, tty
->name
, "cy_close")) {
2720 CY_LOCK(info
, flags
);
2721 /* If the TTY is being hung up, nothing to do */
2722 if (tty_hung_up_p(filp
)) {
2723 CY_UNLOCK(info
, flags
);
2726 #ifdef CY_DEBUG_OPEN
2727 printk(KERN_DEBUG
"cyc:cy_close ttyC%d, count = %d\n", info
->line
,
2730 if ((tty
->count
== 1) && (info
->count
!= 1)) {
2732 * Uh, oh. tty->count is 1, which means that the tty
2733 * structure will be freed. Info->count should always
2734 * be one in these conditions. If it's greater than
2735 * one, we've got real problems, since it means the
2736 * serial port won't be shutdown.
2738 printk(KERN_ERR
"cyc:cy_close: bad serial port count; "
2739 "tty->count is 1, info->count is %d\n", info
->count
);
2742 #ifdef CY_DEBUG_COUNT
2743 printk(KERN_DEBUG
"cyc:cy_close at (%d): decrementing count to %d\n",
2744 current
->pid
, info
->count
- 1);
2746 if (--info
->count
< 0) {
2747 #ifdef CY_DEBUG_COUNT
2748 printk(KERN_DEBUG
"cyc:cyc_close setting count to 0\n");
2753 CY_UNLOCK(info
, flags
);
2756 info
->flags
|= ASYNC_CLOSING
;
2759 * Now we wait for the transmit buffer to clear; and we notify
2760 * the line discipline to only process XON/XOFF characters.
2763 CY_UNLOCK(info
, flags
);
2764 if (info
->closing_wait
!= CY_CLOSING_WAIT_NONE
) {
2765 tty_wait_until_sent(tty
, info
->closing_wait
);
2767 CY_LOCK(info
, flags
);
2769 if (!IS_CYC_Z(*info
->card
)) {
2770 int channel
= info
->line
- info
->card
->first_line
;
2771 int index
= info
->card
->bus_index
;
2772 void __iomem
*base_addr
= info
->card
->base_addr
+
2773 (cy_chip_offset
[channel
>> 2] << index
);
2774 /* Stop accepting input */
2776 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) channel
);
2777 cy_writeb(base_addr
+ (CySRER
<< index
),
2778 readb(base_addr
+ (CySRER
<< index
)) & ~CyRxData
);
2779 if (info
->flags
& ASYNC_INITIALIZED
) {
2780 /* Waiting for on-board buffers to be empty before closing
2782 CY_UNLOCK(info
, flags
);
2783 cy_wait_until_sent(tty
, info
->timeout
);
2784 CY_LOCK(info
, flags
);
2788 /* Waiting for on-board buffers to be empty before closing the port */
2789 void __iomem
*base_addr
= info
->card
->base_addr
;
2790 struct FIRM_ID __iomem
*firm_id
= base_addr
+ ID_ADDRESS
;
2791 struct ZFW_CTRL __iomem
*zfw_ctrl
=
2792 base_addr
+ (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
2793 struct CH_CTRL __iomem
*ch_ctrl
= zfw_ctrl
->ch_ctrl
;
2794 int channel
= info
->line
- info
->card
->first_line
;
2797 if (readl(&ch_ctrl
[channel
].flow_status
) != C_FS_TXIDLE
) {
2798 retval
= cyz_issue_cmd(info
->card
, channel
,
2801 printk(KERN_DEBUG
"cyc:cy_close retval on "
2802 "ttyC%d was %x\n", info
->line
, retval
);
2804 CY_UNLOCK(info
, flags
);
2805 wait_for_completion_interruptible(&info
->shutdown_wait
);
2806 CY_LOCK(info
, flags
);
2811 CY_UNLOCK(info
, flags
);
2813 if (tty
->driver
->flush_buffer
)
2814 tty
->driver
->flush_buffer(tty
);
2815 tty_ldisc_flush(tty
);
2816 CY_LOCK(info
, flags
);
2821 if (info
->blocked_open
) {
2822 CY_UNLOCK(info
, flags
);
2823 if (info
->close_delay
) {
2824 msleep_interruptible(jiffies_to_msecs
2825 (info
->close_delay
));
2827 wake_up_interruptible(&info
->open_wait
);
2828 CY_LOCK(info
, flags
);
2830 info
->flags
&= ~(ASYNC_NORMAL_ACTIVE
| ASYNC_CLOSING
);
2831 wake_up_interruptible(&info
->close_wait
);
2833 #ifdef CY_DEBUG_OTHER
2834 printk(KERN_DEBUG
"cyc:cy_close done\n");
2837 CY_UNLOCK(info
, flags
);
2840 /* This routine gets called when tty_write has put something into
2841 * the write_queue. The characters may come from user space or
2844 * This routine will return the number of characters actually
2845 * accepted for writing.
2847 * If the port is not already transmitting stuff, start it off by
2848 * enabling interrupts. The interrupt service routine will then
2849 * ensure that the characters are sent.
2850 * If the port is already active, there is no need to kick it.
2853 static int cy_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
2855 struct cyclades_port
*info
= tty
->driver_data
;
2856 unsigned long flags
;
2860 printk(KERN_DEBUG
"cyc:cy_write ttyC%d\n", info
->line
);
2863 if (serial_paranoia_check(info
, tty
->name
, "cy_write")) {
2867 if (!info
->xmit_buf
)
2870 CY_LOCK(info
, flags
);
2872 c
= min(count
, min((int)(SERIAL_XMIT_SIZE
- info
->xmit_cnt
- 1),
2873 (int)(SERIAL_XMIT_SIZE
- info
->xmit_head
)));
2878 memcpy(info
->xmit_buf
+ info
->xmit_head
, buf
, c
);
2879 info
->xmit_head
= (info
->xmit_head
+ c
) &
2880 (SERIAL_XMIT_SIZE
- 1);
2881 info
->xmit_cnt
+= c
;
2886 CY_UNLOCK(info
, flags
);
2888 info
->idle_stats
.xmit_bytes
+= ret
;
2889 info
->idle_stats
.xmit_idle
= jiffies
;
2891 if (info
->xmit_cnt
&& !tty
->stopped
&& !tty
->hw_stopped
) {
2898 * This routine is called by the kernel to write a single
2899 * character to the tty device. If the kernel uses this routine,
2900 * it must call the flush_chars() routine (if defined) when it is
2901 * done stuffing characters into the driver. If there is no room
2902 * in the queue, the character is ignored.
2904 static void cy_put_char(struct tty_struct
*tty
, unsigned char ch
)
2906 struct cyclades_port
*info
= tty
->driver_data
;
2907 unsigned long flags
;
2910 printk(KERN_DEBUG
"cyc:cy_put_char ttyC%d\n", info
->line
);
2913 if (serial_paranoia_check(info
, tty
->name
, "cy_put_char"))
2916 if (!info
->xmit_buf
)
2919 CY_LOCK(info
, flags
);
2920 if (info
->xmit_cnt
>= (int)(SERIAL_XMIT_SIZE
- 1)) {
2921 CY_UNLOCK(info
, flags
);
2925 info
->xmit_buf
[info
->xmit_head
++] = ch
;
2926 info
->xmit_head
&= SERIAL_XMIT_SIZE
- 1;
2928 info
->idle_stats
.xmit_bytes
++;
2929 info
->idle_stats
.xmit_idle
= jiffies
;
2930 CY_UNLOCK(info
, flags
);
2934 * This routine is called by the kernel after it has written a
2935 * series of characters to the tty device using put_char().
2937 static void cy_flush_chars(struct tty_struct
*tty
)
2939 struct cyclades_port
*info
= tty
->driver_data
;
2942 printk(KERN_DEBUG
"cyc:cy_flush_chars ttyC%d\n", info
->line
);
2945 if (serial_paranoia_check(info
, tty
->name
, "cy_flush_chars"))
2948 if (info
->xmit_cnt
<= 0 || tty
->stopped
|| tty
->hw_stopped
||
2953 } /* cy_flush_chars */
2956 * This routine returns the numbers of characters the tty driver
2957 * will accept for queuing to be written. This number is subject
2958 * to change as output buffers get emptied, or if the output flow
2959 * control is activated.
2961 static int cy_write_room(struct tty_struct
*tty
)
2963 struct cyclades_port
*info
= tty
->driver_data
;
2967 printk(KERN_DEBUG
"cyc:cy_write_room ttyC%d\n", info
->line
);
2970 if (serial_paranoia_check(info
, tty
->name
, "cy_write_room"))
2972 ret
= SERIAL_XMIT_SIZE
- info
->xmit_cnt
- 1;
2976 } /* cy_write_room */
2978 static int cy_chars_in_buffer(struct tty_struct
*tty
)
2980 struct cyclades_card
*card
;
2981 struct cyclades_port
*info
= tty
->driver_data
;
2984 if (serial_paranoia_check(info
, tty
->name
, "cy_chars_in_buffer"))
2988 channel
= (info
->line
) - (card
->first_line
);
2990 #ifdef Z_EXT_CHARS_IN_BUFFER
2991 if (!IS_CYC_Z(cy_card
[card
])) {
2992 #endif /* Z_EXT_CHARS_IN_BUFFER */
2994 printk(KERN_DEBUG
"cyc:cy_chars_in_buffer ttyC%d %d\n",
2995 info
->line
, info
->xmit_cnt
);
2997 return info
->xmit_cnt
;
2998 #ifdef Z_EXT_CHARS_IN_BUFFER
3000 static struct FIRM_ID
*firm_id
;
3001 static struct ZFW_CTRL
*zfw_ctrl
;
3002 static struct CH_CTRL
*ch_ctrl
;
3003 static struct BUF_CTRL
*buf_ctrl
;
3005 __u32 tx_put
, tx_get
, tx_bufsize
;
3007 firm_id
= card
->base_addr
+ ID_ADDRESS
;
3008 zfw_ctrl
= card
->base_addr
+
3009 (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
3010 ch_ctrl
= &(zfw_ctrl
->ch_ctrl
[channel
]);
3011 buf_ctrl
= &(zfw_ctrl
->buf_ctrl
[channel
]);
3013 tx_get
= readl(&buf_ctrl
->tx_get
);
3014 tx_put
= readl(&buf_ctrl
->tx_put
);
3015 tx_bufsize
= readl(&buf_ctrl
->tx_bufsize
);
3016 if (tx_put
>= tx_get
)
3017 char_count
= tx_put
- tx_get
;
3019 char_count
= tx_put
- tx_get
+ tx_bufsize
;
3021 printk(KERN_DEBUG
"cyc:cy_chars_in_buffer ttyC%d %d\n",
3022 info
->line
, info
->xmit_cnt
+ char_count
);
3024 return info
->xmit_cnt
+ char_count
;
3026 #endif /* Z_EXT_CHARS_IN_BUFFER */
3027 } /* cy_chars_in_buffer */
3030 * ------------------------------------------------------------
3031 * cy_ioctl() and friends
3032 * ------------------------------------------------------------
3035 static void cyy_baud_calc(struct cyclades_port
*info
, __u32 baud
)
3037 int co
, co_val
, bpr
;
3038 __u32 cy_clock
= ((info
->chip_rev
>= CD1400_REV_J
) ? 60000000 :
3042 info
->tbpr
= info
->tco
= info
->rbpr
= info
->rco
= 0;
3046 /* determine which prescaler to use */
3047 for (co
= 4, co_val
= 2048; co
; co
--, co_val
>>= 2) {
3048 if (cy_clock
/ co_val
/ baud
> 63)
3052 bpr
= (cy_clock
/ co_val
* 2 / baud
+ 1) / 2;
3056 info
->tbpr
= info
->rbpr
= bpr
;
3057 info
->tco
= info
->rco
= co
;
3061 * This routine finds or computes the various line characteristics.
3062 * It used to be called config_setup
3064 static void set_line_char(struct cyclades_port
*info
)
3066 struct cyclades_card
*card
;
3067 unsigned long flags
;
3068 void __iomem
*base_addr
;
3069 int chip
, channel
, index
;
3070 unsigned cflag
, iflag
;
3071 unsigned short chip_number
;
3072 int baud
, baud_rate
= 0;
3075 if (!info
->tty
|| !info
->tty
->termios
) {
3078 if (info
->line
== -1) {
3081 cflag
= info
->tty
->termios
->c_cflag
;
3082 iflag
= info
->tty
->termios
->c_iflag
;
3085 * Set up the tty->alt_speed kludge
3088 if ((info
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
3089 info
->tty
->alt_speed
= 57600;
3090 if ((info
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
3091 info
->tty
->alt_speed
= 115200;
3092 if ((info
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
3093 info
->tty
->alt_speed
= 230400;
3094 if ((info
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
3095 info
->tty
->alt_speed
= 460800;
3099 channel
= info
->line
- card
->first_line
;
3100 chip_number
= channel
/ 4;
3102 if (!IS_CYC_Z(*card
)) {
3104 index
= card
->bus_index
;
3107 baud
= tty_get_baud_rate(info
->tty
);
3108 if (baud
== 38400 && (info
->flags
& ASYNC_SPD_MASK
) ==
3110 if (info
->custom_divisor
)
3111 baud_rate
= info
->baud
/ info
->custom_divisor
;
3113 baud_rate
= info
->baud
;
3114 } else if (baud
> CD1400_MAX_SPEED
) {
3115 baud
= CD1400_MAX_SPEED
;
3117 /* find the baud index */
3118 for (i
= 0; i
< 20; i
++) {
3119 if (baud
== baud_table
[i
]) {
3124 i
= 19; /* CD1400_MAX_SPEED */
3127 if (baud
== 38400 && (info
->flags
& ASYNC_SPD_MASK
) ==
3129 cyy_baud_calc(info
, baud_rate
);
3131 if (info
->chip_rev
>= CD1400_REV_J
) {
3132 /* It is a CD1400 rev. J or later */
3133 info
->tbpr
= baud_bpr_60
[i
]; /* Tx BPR */
3134 info
->tco
= baud_co_60
[i
]; /* Tx CO */
3135 info
->rbpr
= baud_bpr_60
[i
]; /* Rx BPR */
3136 info
->rco
= baud_co_60
[i
]; /* Rx CO */
3138 info
->tbpr
= baud_bpr_25
[i
]; /* Tx BPR */
3139 info
->tco
= baud_co_25
[i
]; /* Tx CO */
3140 info
->rbpr
= baud_bpr_25
[i
]; /* Rx BPR */
3141 info
->rco
= baud_co_25
[i
]; /* Rx CO */
3144 if (baud_table
[i
] == 134) {
3145 /* get it right for 134.5 baud */
3146 info
->timeout
= (info
->xmit_fifo_size
* HZ
* 30 / 269) +
3148 } else if (baud
== 38400 && (info
->flags
& ASYNC_SPD_MASK
) ==
3150 info
->timeout
= (info
->xmit_fifo_size
* HZ
* 15 /
3152 } else if (baud_table
[i
]) {
3153 info
->timeout
= (info
->xmit_fifo_size
* HZ
* 15 /
3155 /* this needs to be propagated into the card info */
3159 /* By tradition (is it a standard?) a baud rate of zero
3160 implies the line should be/has been closed. A bit
3161 later in this routine such a test is performed. */
3163 /* byte size and parity */
3166 /* receive threshold */
3167 info
->cor3
= (info
->default_threshold
?
3168 info
->default_threshold
: baud_cor3
[i
]);
3170 switch (cflag
& CSIZE
) {
3172 info
->cor1
= Cy_5_BITS
;
3175 info
->cor1
= Cy_6_BITS
;
3178 info
->cor1
= Cy_7_BITS
;
3181 info
->cor1
= Cy_8_BITS
;
3184 if (cflag
& CSTOPB
) {
3185 info
->cor1
|= Cy_2_STOP
;
3187 if (cflag
& PARENB
) {
3188 if (cflag
& PARODD
) {
3189 info
->cor1
|= CyPARITY_O
;
3191 info
->cor1
|= CyPARITY_E
;
3194 info
->cor1
|= CyPARITY_NONE
;
3197 /* CTS flow control flag */
3198 if (cflag
& CRTSCTS
) {
3199 info
->flags
|= ASYNC_CTS_FLOW
;
3200 info
->cor2
|= CyCtsAE
;
3202 info
->flags
&= ~ASYNC_CTS_FLOW
;
3203 info
->cor2
&= ~CyCtsAE
;
3206 info
->flags
&= ~ASYNC_CHECK_CD
;
3208 info
->flags
|= ASYNC_CHECK_CD
;
3210 /***********************************************
3211 The hardware option, CyRtsAO, presents RTS when
3212 the chip has characters to send. Since most modems
3213 use RTS as reverse (inbound) flow control, this
3214 option is not used. If inbound flow control is
3215 necessary, DTR can be programmed to provide the
3216 appropriate signals for use with a non-standard
3217 cable. Contact Marcio Saito for details.
3218 ***********************************************/
3220 chip
= channel
>> 2;
3222 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3224 CY_LOCK(info
, flags
);
3225 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) channel
);
3227 /* tx and rx baud rate */
3229 cy_writeb(base_addr
+ (CyTCOR
<< index
), info
->tco
);
3230 cy_writeb(base_addr
+ (CyTBPR
<< index
), info
->tbpr
);
3231 cy_writeb(base_addr
+ (CyRCOR
<< index
), info
->rco
);
3232 cy_writeb(base_addr
+ (CyRBPR
<< index
), info
->rbpr
);
3234 /* set line characteristics according configuration */
3236 cy_writeb(base_addr
+ (CySCHR1
<< index
),
3237 START_CHAR(info
->tty
));
3238 cy_writeb(base_addr
+ (CySCHR2
<< index
), STOP_CHAR(info
->tty
));
3239 cy_writeb(base_addr
+ (CyCOR1
<< index
), info
->cor1
);
3240 cy_writeb(base_addr
+ (CyCOR2
<< index
), info
->cor2
);
3241 cy_writeb(base_addr
+ (CyCOR3
<< index
), info
->cor3
);
3242 cy_writeb(base_addr
+ (CyCOR4
<< index
), info
->cor4
);
3243 cy_writeb(base_addr
+ (CyCOR5
<< index
), info
->cor5
);
3245 cyy_issue_cmd(base_addr
, CyCOR_CHANGE
| CyCOR1ch
| CyCOR2ch
|
3248 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) channel
); /* !!! Is this needed? */
3249 cy_writeb(base_addr
+ (CyRTPR
<< index
),
3250 (info
->default_timeout
? info
->default_timeout
: 0x02));
3251 /* 10ms rx timeout */
3253 if (C_CLOCAL(info
->tty
)) {
3254 /* without modem intr */
3255 cy_writeb(base_addr
+ (CySRER
<< index
),
3256 readb(base_addr
+ (CySRER
<< index
)) | CyMdmCh
);
3257 /* act on 1->0 modem transitions */
3258 if ((cflag
& CRTSCTS
) && info
->rflow
) {
3259 cy_writeb(base_addr
+ (CyMCOR1
<< index
),
3260 (CyCTS
| rflow_thr
[i
]));
3262 cy_writeb(base_addr
+ (CyMCOR1
<< index
),
3265 /* act on 0->1 modem transitions */
3266 cy_writeb(base_addr
+ (CyMCOR2
<< index
), CyCTS
);
3268 /* without modem intr */
3269 cy_writeb(base_addr
+ (CySRER
<< index
),
3271 (CySRER
<< index
)) | CyMdmCh
);
3272 /* act on 1->0 modem transitions */
3273 if ((cflag
& CRTSCTS
) && info
->rflow
) {
3274 cy_writeb(base_addr
+ (CyMCOR1
<< index
),
3275 (CyDSR
| CyCTS
| CyRI
| CyDCD
|
3278 cy_writeb(base_addr
+ (CyMCOR1
<< index
),
3279 CyDSR
| CyCTS
| CyRI
| CyDCD
);
3281 /* act on 0->1 modem transitions */
3282 cy_writeb(base_addr
+ (CyMCOR2
<< index
),
3283 CyDSR
| CyCTS
| CyRI
| CyDCD
);
3286 if (i
== 0) { /* baud rate is zero, turn off line */
3287 if (info
->rtsdtr_inv
) {
3288 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
3291 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
3295 printk(KERN_DEBUG
"cyc:set_line_char dropping DTR\n");
3296 printk(KERN_DEBUG
" status: 0x%x, 0x%x\n",
3297 readb(base_addr
+ (CyMSVR1
<< index
)),
3298 readb(base_addr
+ (CyMSVR2
<< index
)));
3301 if (info
->rtsdtr_inv
) {
3302 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
3305 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
3309 printk(KERN_DEBUG
"cyc:set_line_char raising DTR\n");
3310 printk(KERN_DEBUG
" status: 0x%x, 0x%x\n",
3311 readb(base_addr
+ (CyMSVR1
<< index
)),
3312 readb(base_addr
+ (CyMSVR2
<< index
)));
3317 clear_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
3319 CY_UNLOCK(info
, flags
);
3322 struct FIRM_ID __iomem
*firm_id
;
3323 struct ZFW_CTRL __iomem
*zfw_ctrl
;
3324 struct BOARD_CTRL __iomem
*board_ctrl
;
3325 struct CH_CTRL __iomem
*ch_ctrl
;
3326 struct BUF_CTRL __iomem
*buf_ctrl
;
3330 firm_id
= card
->base_addr
+ ID_ADDRESS
;
3331 if (!ISZLOADED(*card
)) {
3335 zfw_ctrl
= card
->base_addr
+
3336 (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
3337 board_ctrl
= &zfw_ctrl
->board_ctrl
;
3338 ch_ctrl
= &(zfw_ctrl
->ch_ctrl
[channel
]);
3339 buf_ctrl
= &zfw_ctrl
->buf_ctrl
[channel
];
3342 baud
= tty_get_baud_rate(info
->tty
);
3343 if (baud
== 38400 && (info
->flags
& ASYNC_SPD_MASK
) ==
3345 if (info
->custom_divisor
)
3346 baud_rate
= info
->baud
/ info
->custom_divisor
;
3348 baud_rate
= info
->baud
;
3349 } else if (baud
> CYZ_MAX_SPEED
) {
3350 baud
= CYZ_MAX_SPEED
;
3352 cy_writel(&ch_ctrl
->comm_baud
, baud
);
3355 /* get it right for 134.5 baud */
3356 info
->timeout
= (info
->xmit_fifo_size
* HZ
* 30 / 269) +
3358 } else if (baud
== 38400 && (info
->flags
& ASYNC_SPD_MASK
) ==
3360 info
->timeout
= (info
->xmit_fifo_size
* HZ
* 15 /
3363 info
->timeout
= (info
->xmit_fifo_size
* HZ
* 15 /
3365 /* this needs to be propagated into the card info */
3370 /* byte size and parity */
3371 switch (cflag
& CSIZE
) {
3373 cy_writel(&ch_ctrl
->comm_data_l
, C_DL_CS5
);
3376 cy_writel(&ch_ctrl
->comm_data_l
, C_DL_CS6
);
3379 cy_writel(&ch_ctrl
->comm_data_l
, C_DL_CS7
);
3382 cy_writel(&ch_ctrl
->comm_data_l
, C_DL_CS8
);
3385 if (cflag
& CSTOPB
) {
3386 cy_writel(&ch_ctrl
->comm_data_l
,
3387 readl(&ch_ctrl
->comm_data_l
) | C_DL_2STOP
);
3389 cy_writel(&ch_ctrl
->comm_data_l
,
3390 readl(&ch_ctrl
->comm_data_l
) | C_DL_1STOP
);
3392 if (cflag
& PARENB
) {
3393 if (cflag
& PARODD
) {
3394 cy_writel(&ch_ctrl
->comm_parity
, C_PR_ODD
);
3396 cy_writel(&ch_ctrl
->comm_parity
, C_PR_EVEN
);
3399 cy_writel(&ch_ctrl
->comm_parity
, C_PR_NONE
);
3402 /* CTS flow control flag */
3403 if (cflag
& CRTSCTS
) {
3404 cy_writel(&ch_ctrl
->hw_flow
,
3405 readl(&ch_ctrl
->hw_flow
) | C_RS_CTS
| C_RS_RTS
);
3407 cy_writel(&ch_ctrl
->hw_flow
, readl(&ch_ctrl
->hw_flow
) &
3408 ~(C_RS_CTS
| C_RS_RTS
));
3410 /* As the HW flow control is done in firmware, the driver
3411 doesn't need to care about it */
3412 info
->flags
&= ~ASYNC_CTS_FLOW
;
3414 /* XON/XOFF/XANY flow control flags */
3417 sw_flow
|= C_FL_OXX
;
3419 sw_flow
|= C_FL_OIXANY
;
3421 cy_writel(&ch_ctrl
->sw_flow
, sw_flow
);
3423 retval
= cyz_issue_cmd(card
, channel
, C_CM_IOCTL
, 0L);
3425 printk(KERN_ERR
"cyc:set_line_char retval on ttyC%d "
3426 "was %x\n", info
->line
, retval
);
3429 /* CD sensitivity */
3430 if (cflag
& CLOCAL
) {
3431 info
->flags
&= ~ASYNC_CHECK_CD
;
3433 info
->flags
|= ASYNC_CHECK_CD
;
3436 if (baud
== 0) { /* baud rate is zero, turn off line */
3437 cy_writel(&ch_ctrl
->rs_control
,
3438 readl(&ch_ctrl
->rs_control
) & ~C_RS_DTR
);
3440 printk(KERN_DEBUG
"cyc:set_line_char dropping Z DTR\n");
3443 cy_writel(&ch_ctrl
->rs_control
,
3444 readl(&ch_ctrl
->rs_control
) | C_RS_DTR
);
3446 printk(KERN_DEBUG
"cyc:set_line_char raising Z DTR\n");
3450 retval
= cyz_issue_cmd(card
, channel
, C_CM_IOCTLM
,0L);
3452 printk(KERN_ERR
"cyc:set_line_char(2) retval on ttyC%d "
3453 "was %x\n", info
->line
, retval
);
3457 clear_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
3460 } /* set_line_char */
3463 get_serial_info(struct cyclades_port
*info
,
3464 struct serial_struct __user
* retinfo
)
3466 struct serial_struct tmp
;
3467 struct cyclades_card
*cinfo
= info
->card
;
3471 memset(&tmp
, 0, sizeof(tmp
));
3472 tmp
.type
= info
->type
;
3473 tmp
.line
= info
->line
;
3474 tmp
.port
= (info
->card
- cy_card
) * 0x100 + info
->line
-
3476 tmp
.irq
= cinfo
->irq
;
3477 tmp
.flags
= info
->flags
;
3478 tmp
.close_delay
= info
->close_delay
;
3479 tmp
.closing_wait
= info
->closing_wait
;
3480 tmp
.baud_base
= info
->baud
;
3481 tmp
.custom_divisor
= info
->custom_divisor
;
3482 tmp
.hub6
= 0; /*!!! */
3483 return copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)) ? -EFAULT
: 0;
3484 } /* get_serial_info */
3487 set_serial_info(struct cyclades_port
*info
,
3488 struct serial_struct __user
* new_info
)
3490 struct serial_struct new_serial
;
3491 struct cyclades_port old_info
;
3493 if (copy_from_user(&new_serial
, new_info
, sizeof(new_serial
)))
3497 if (!capable(CAP_SYS_ADMIN
)) {
3498 if (new_serial
.close_delay
!= info
->close_delay
||
3499 new_serial
.baud_base
!= info
->baud
||
3500 (new_serial
.flags
& ASYNC_FLAGS
&
3502 (info
->flags
& ASYNC_FLAGS
& ~ASYNC_USR_MASK
))
3504 info
->flags
= (info
->flags
& ~ASYNC_USR_MASK
) |
3505 (new_serial
.flags
& ASYNC_USR_MASK
);
3506 info
->baud
= new_serial
.baud_base
;
3507 info
->custom_divisor
= new_serial
.custom_divisor
;
3508 goto check_and_exit
;
3512 * OK, past this point, all the error checking has been done.
3513 * At this point, we start making changes.....
3516 info
->baud
= new_serial
.baud_base
;
3517 info
->custom_divisor
= new_serial
.custom_divisor
;
3518 info
->flags
= (info
->flags
& ~ASYNC_FLAGS
) |
3519 (new_serial
.flags
& ASYNC_FLAGS
);
3520 info
->close_delay
= new_serial
.close_delay
* HZ
/ 100;
3521 info
->closing_wait
= new_serial
.closing_wait
* HZ
/ 100;
3524 if (info
->flags
& ASYNC_INITIALIZED
) {
3525 set_line_char(info
);
3528 return startup(info
);
3530 } /* set_serial_info */
3533 * get_lsr_info - get line status register info
3535 * Purpose: Let user call ioctl() to get info when the UART physically
3536 * is emptied. On bus types like RS485, the transmitter must
3537 * release the bus after transmitting. This must be done when
3538 * the transmit shift register is empty, not be done when the
3539 * transmit holding register is empty. This functionality
3540 * allows an RS485 driver to be written in user space.
3542 static int get_lsr_info(struct cyclades_port
*info
, unsigned int __user
* value
)
3544 struct cyclades_card
*card
;
3545 int chip
, channel
, index
;
3546 unsigned char status
;
3547 unsigned int result
;
3548 unsigned long flags
;
3549 void __iomem
*base_addr
;
3552 channel
= (info
->line
) - (card
->first_line
);
3553 if (!IS_CYC_Z(*card
)) {
3554 chip
= channel
>> 2;
3556 index
= card
->bus_index
;
3557 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3559 CY_LOCK(info
, flags
);
3560 status
= readb(base_addr
+ (CySRER
<< index
)) &
3561 (CyTxRdy
| CyTxMpty
);
3562 CY_UNLOCK(info
, flags
);
3563 result
= (status
? 0 : TIOCSER_TEMT
);
3565 /* Not supported yet */
3568 return put_user(result
, (unsigned long __user
*)value
);
3571 static int cy_tiocmget(struct tty_struct
*tty
, struct file
*file
)
3573 struct cyclades_port
*info
= tty
->driver_data
;
3574 struct cyclades_card
*card
;
3575 int chip
, channel
, index
;
3576 void __iomem
*base_addr
;
3577 unsigned long flags
;
3578 unsigned char status
;
3579 unsigned long lstatus
;
3580 unsigned int result
;
3581 struct FIRM_ID __iomem
*firm_id
;
3582 struct ZFW_CTRL __iomem
*zfw_ctrl
;
3583 struct BOARD_CTRL __iomem
*board_ctrl
;
3584 struct CH_CTRL __iomem
*ch_ctrl
;
3586 if (serial_paranoia_check(info
, tty
->name
, __FUNCTION__
))
3590 channel
= info
->line
- card
->first_line
;
3591 if (!IS_CYC_Z(*card
)) {
3592 chip
= channel
>> 2;
3594 index
= card
->bus_index
;
3595 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3597 CY_LOCK(info
, flags
);
3598 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) channel
);
3599 status
= readb(base_addr
+ (CyMSVR1
<< index
));
3600 status
|= readb(base_addr
+ (CyMSVR2
<< index
));
3601 CY_UNLOCK(info
, flags
);
3603 if (info
->rtsdtr_inv
) {
3604 result
= ((status
& CyRTS
) ? TIOCM_DTR
: 0) |
3605 ((status
& CyDTR
) ? TIOCM_RTS
: 0);
3607 result
= ((status
& CyRTS
) ? TIOCM_RTS
: 0) |
3608 ((status
& CyDTR
) ? TIOCM_DTR
: 0);
3610 result
|= ((status
& CyDCD
) ? TIOCM_CAR
: 0) |
3611 ((status
& CyRI
) ? TIOCM_RNG
: 0) |
3612 ((status
& CyDSR
) ? TIOCM_DSR
: 0) |
3613 ((status
& CyCTS
) ? TIOCM_CTS
: 0);
3615 base_addr
= card
->base_addr
;
3616 firm_id
= card
->base_addr
+ ID_ADDRESS
;
3617 if (ISZLOADED(*card
)) {
3618 zfw_ctrl
= card
->base_addr
+
3619 (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
3620 board_ctrl
= &zfw_ctrl
->board_ctrl
;
3621 ch_ctrl
= zfw_ctrl
->ch_ctrl
;
3622 lstatus
= readl(&ch_ctrl
[channel
].rs_status
);
3623 result
= ((lstatus
& C_RS_RTS
) ? TIOCM_RTS
: 0) |
3624 ((lstatus
& C_RS_DTR
) ? TIOCM_DTR
: 0) |
3625 ((lstatus
& C_RS_DCD
) ? TIOCM_CAR
: 0) |
3626 ((lstatus
& C_RS_RI
) ? TIOCM_RNG
: 0) |
3627 ((lstatus
& C_RS_DSR
) ? TIOCM_DSR
: 0) |
3628 ((lstatus
& C_RS_CTS
) ? TIOCM_CTS
: 0);
3639 cy_tiocmset(struct tty_struct
*tty
, struct file
*file
,
3640 unsigned int set
, unsigned int clear
)
3642 struct cyclades_port
*info
= tty
->driver_data
;
3643 struct cyclades_card
*card
;
3644 int chip
, channel
, index
;
3645 void __iomem
*base_addr
;
3646 unsigned long flags
;
3647 struct FIRM_ID __iomem
*firm_id
;
3648 struct ZFW_CTRL __iomem
*zfw_ctrl
;
3649 struct BOARD_CTRL __iomem
*board_ctrl
;
3650 struct CH_CTRL __iomem
*ch_ctrl
;
3653 if (serial_paranoia_check(info
, tty
->name
, __FUNCTION__
))
3657 channel
= (info
->line
) - (card
->first_line
);
3658 if (!IS_CYC_Z(*card
)) {
3659 chip
= channel
>> 2;
3661 index
= card
->bus_index
;
3662 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3664 if (set
& TIOCM_RTS
) {
3665 CY_LOCK(info
, flags
);
3666 cy_writeb(base_addr
+ (CyCAR
<< index
),
3668 if (info
->rtsdtr_inv
) {
3669 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
3672 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
3675 CY_UNLOCK(info
, flags
);
3677 if (clear
& TIOCM_RTS
) {
3678 CY_LOCK(info
, flags
);
3679 cy_writeb(base_addr
+ (CyCAR
<< index
),
3681 if (info
->rtsdtr_inv
) {
3682 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
3685 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
3688 CY_UNLOCK(info
, flags
);
3690 if (set
& TIOCM_DTR
) {
3691 CY_LOCK(info
, flags
);
3692 cy_writeb(base_addr
+ (CyCAR
<< index
),
3694 if (info
->rtsdtr_inv
) {
3695 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
3698 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
3702 printk(KERN_DEBUG
"cyc:set_modem_info raising DTR\n");
3703 printk(KERN_DEBUG
" status: 0x%x, 0x%x\n",
3704 readb(base_addr
+ (CyMSVR1
<< index
)),
3705 readb(base_addr
+ (CyMSVR2
<< index
)));
3707 CY_UNLOCK(info
, flags
);
3709 if (clear
& TIOCM_DTR
) {
3710 CY_LOCK(info
, flags
);
3711 cy_writeb(base_addr
+ (CyCAR
<< index
),
3713 if (info
->rtsdtr_inv
) {
3714 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
3717 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
3722 printk(KERN_DEBUG
"cyc:set_modem_info dropping DTR\n");
3723 printk(KERN_DEBUG
" status: 0x%x, 0x%x\n",
3724 readb(base_addr
+ (CyMSVR1
<< index
)),
3725 readb(base_addr
+ (CyMSVR2
<< index
)));
3727 CY_UNLOCK(info
, flags
);
3730 base_addr
= card
->base_addr
;
3732 firm_id
= card
->base_addr
+ ID_ADDRESS
;
3733 if (ISZLOADED(*card
)) {
3734 zfw_ctrl
= card
->base_addr
+
3735 (readl(&firm_id
->zfwctrl_addr
) & 0xfffff);
3736 board_ctrl
= &zfw_ctrl
->board_ctrl
;
3737 ch_ctrl
= zfw_ctrl
->ch_ctrl
;
3739 if (set
& TIOCM_RTS
) {
3740 CY_LOCK(info
, flags
);
3741 cy_writel(&ch_ctrl
[channel
].rs_control
,
3742 readl(&ch_ctrl
[channel
].rs_control
) |
3744 CY_UNLOCK(info
, flags
);
3746 if (clear
& TIOCM_RTS
) {
3747 CY_LOCK(info
, flags
);
3748 cy_writel(&ch_ctrl
[channel
].rs_control
,
3749 readl(&ch_ctrl
[channel
].rs_control
) &
3751 CY_UNLOCK(info
, flags
);
3753 if (set
& TIOCM_DTR
) {
3754 CY_LOCK(info
, flags
);
3755 cy_writel(&ch_ctrl
[channel
].rs_control
,
3756 readl(&ch_ctrl
[channel
].rs_control
) |
3759 printk(KERN_DEBUG
"cyc:set_modem_info raising "
3762 CY_UNLOCK(info
, flags
);
3764 if (clear
& TIOCM_DTR
) {
3765 CY_LOCK(info
, flags
);
3766 cy_writel(&ch_ctrl
[channel
].rs_control
,
3767 readl(&ch_ctrl
[channel
].rs_control
) &
3770 printk(KERN_DEBUG
"cyc:set_modem_info clearing "
3773 CY_UNLOCK(info
, flags
);
3778 CY_LOCK(info
, flags
);
3779 retval
= cyz_issue_cmd(info
->card
,
3780 channel
, C_CM_IOCTLM
, 0L);
3782 printk(KERN_ERR
"cyc:set_modem_info retval on ttyC%d "
3783 "was %x\n", info
->line
, retval
);
3785 CY_UNLOCK(info
, flags
);
3791 * cy_break() --- routine which turns the break handling on or off
3793 static void cy_break(struct tty_struct
*tty
, int break_state
)
3795 struct cyclades_port
*info
= tty
->driver_data
;
3796 unsigned long flags
;
3798 if (serial_paranoia_check(info
, tty
->name
, "cy_break"))
3801 CY_LOCK(info
, flags
);
3802 if (!IS_CYC_Z(*info
->card
)) {
3803 /* Let the transmit ISR take care of this (since it
3804 requires stuffing characters into the output stream).
3806 if (break_state
== -1) {
3807 if (!info
->breakon
) {
3809 if (!info
->xmit_cnt
) {
3810 CY_UNLOCK(info
, flags
);
3812 CY_LOCK(info
, flags
);
3816 if (!info
->breakoff
) {
3818 if (!info
->xmit_cnt
) {
3819 CY_UNLOCK(info
, flags
);
3821 CY_LOCK(info
, flags
);
3828 if (break_state
== -1) {
3829 retval
= cyz_issue_cmd(info
->card
,
3830 info
->line
- info
->card
->first_line
,
3831 C_CM_SET_BREAK
, 0L);
3833 printk(KERN_ERR
"cyc:cy_break (set) retval on "
3834 "ttyC%d was %x\n", info
->line
, retval
);
3837 retval
= cyz_issue_cmd(info
->card
,
3838 info
->line
- info
->card
->first_line
,
3839 C_CM_CLR_BREAK
, 0L);
3841 printk(KERN_DEBUG
"cyc:cy_break (clr) retval "
3842 "on ttyC%d was %x\n", info
->line
,
3847 CY_UNLOCK(info
, flags
);
3851 get_mon_info(struct cyclades_port
*info
, struct cyclades_monitor __user
* mon
)
3854 if (copy_to_user(mon
, &info
->mon
, sizeof(struct cyclades_monitor
)))
3856 info
->mon
.int_count
= 0;
3857 info
->mon
.char_count
= 0;
3858 info
->mon
.char_max
= 0;
3859 info
->mon
.char_last
= 0;
3861 } /* get_mon_info */
3863 static int set_threshold(struct cyclades_port
*info
, unsigned long value
)
3865 struct cyclades_card
*card
;
3866 void __iomem
*base_addr
;
3867 int channel
, chip
, index
;
3868 unsigned long flags
;
3871 channel
= info
->line
- card
->first_line
;
3872 if (!IS_CYC_Z(*card
)) {
3873 chip
= channel
>> 2;
3875 index
= card
->bus_index
;
3877 card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3879 info
->cor3
&= ~CyREC_FIFO
;
3880 info
->cor3
|= value
& CyREC_FIFO
;
3882 CY_LOCK(info
, flags
);
3883 cy_writeb(base_addr
+ (CyCOR3
<< index
), info
->cor3
);
3884 cyy_issue_cmd(base_addr
, CyCOR_CHANGE
| CyCOR3ch
, index
);
3885 CY_UNLOCK(info
, flags
);
3887 /* Nothing to do! */
3890 } /* set_threshold */
3893 get_threshold(struct cyclades_port
*info
, unsigned long __user
* value
)
3895 struct cyclades_card
*card
;
3896 void __iomem
*base_addr
;
3897 int channel
, chip
, index
;
3901 channel
= info
->line
- card
->first_line
;
3902 if (!IS_CYC_Z(*card
)) {
3903 chip
= channel
>> 2;
3905 index
= card
->bus_index
;
3906 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3908 tmp
= readb(base_addr
+ (CyCOR3
<< index
)) & CyREC_FIFO
;
3909 return put_user(tmp
, value
);
3911 /* Nothing to do! */
3914 } /* get_threshold */
3917 set_default_threshold(struct cyclades_port
*info
, unsigned long value
)
3919 info
->default_threshold
= value
& 0x0f;
3921 } /* set_default_threshold */
3924 get_default_threshold(struct cyclades_port
*info
, unsigned long __user
* value
)
3926 return put_user(info
->default_threshold
, value
);
3927 } /* get_default_threshold */
3929 static int set_timeout(struct cyclades_port
*info
, unsigned long value
)
3931 struct cyclades_card
*card
;
3932 void __iomem
*base_addr
;
3933 int channel
, chip
, index
;
3934 unsigned long flags
;
3937 channel
= info
->line
- card
->first_line
;
3938 if (!IS_CYC_Z(*card
)) {
3939 chip
= channel
>> 2;
3941 index
= card
->bus_index
;
3942 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3944 CY_LOCK(info
, flags
);
3945 cy_writeb(base_addr
+ (CyRTPR
<< index
), value
& 0xff);
3946 CY_UNLOCK(info
, flags
);
3948 /* Nothing to do! */
3953 static int get_timeout(struct cyclades_port
*info
, unsigned long __user
* value
)
3955 struct cyclades_card
*card
;
3956 void __iomem
*base_addr
;
3957 int channel
, chip
, index
;
3961 channel
= info
->line
- card
->first_line
;
3962 if (!IS_CYC_Z(*card
)) {
3963 chip
= channel
>> 2;
3965 index
= card
->bus_index
;
3966 base_addr
= card
->base_addr
+ (cy_chip_offset
[chip
] << index
);
3968 tmp
= readb(base_addr
+ (CyRTPR
<< index
));
3969 return put_user(tmp
, value
);
3971 /* Nothing to do! */
3976 static int set_default_timeout(struct cyclades_port
*info
, unsigned long value
)
3978 info
->default_timeout
= value
& 0xff;
3980 } /* set_default_timeout */
3983 get_default_timeout(struct cyclades_port
*info
, unsigned long __user
* value
)
3985 return put_user(info
->default_timeout
, value
);
3986 } /* get_default_timeout */
3989 * This routine allows the tty driver to implement device-
3990 * specific ioctl's. If the ioctl number passed in cmd is
3991 * not recognized by the driver, it should return ENOIOCTLCMD.
3994 cy_ioctl(struct tty_struct
*tty
, struct file
*file
,
3995 unsigned int cmd
, unsigned long arg
)
3997 struct cyclades_port
*info
= tty
->driver_data
;
3998 struct cyclades_icount cprev
, cnow
; /* kernel counter temps */
3999 struct serial_icounter_struct __user
*p_cuser
; /* user space */
4001 unsigned long flags
;
4002 void __user
*argp
= (void __user
*)arg
;
4004 if (serial_paranoia_check(info
, tty
->name
, "cy_ioctl"))
4007 #ifdef CY_DEBUG_OTHER
4008 printk(KERN_DEBUG
"cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
4009 info
->line
, cmd
, arg
);
4014 ret_val
= get_mon_info(info
, argp
);
4017 ret_val
= get_threshold(info
, argp
);
4020 ret_val
= set_threshold(info
, arg
);
4022 case CYGETDEFTHRESH
:
4023 ret_val
= get_default_threshold(info
, argp
);
4025 case CYSETDEFTHRESH
:
4026 ret_val
= set_default_threshold(info
, arg
);
4029 ret_val
= get_timeout(info
, argp
);
4032 ret_val
= set_timeout(info
, arg
);
4034 case CYGETDEFTIMEOUT
:
4035 ret_val
= get_default_timeout(info
, argp
);
4037 case CYSETDEFTIMEOUT
:
4038 ret_val
= set_default_timeout(info
, arg
);
4041 info
->rflow
= (int)arg
;
4045 ret_val
= info
->rflow
;
4047 case CYSETRTSDTR_INV
:
4048 info
->rtsdtr_inv
= (int)arg
;
4051 case CYGETRTSDTR_INV
:
4052 ret_val
= info
->rtsdtr_inv
;
4054 case CYGETCD1400VER
:
4055 ret_val
= info
->chip_rev
;
4057 #ifndef CONFIG_CYZ_INTR
4058 case CYZSETPOLLCYCLE
:
4059 cyz_polling_cycle
= (arg
* HZ
) / 1000;
4062 case CYZGETPOLLCYCLE
:
4063 ret_val
= (cyz_polling_cycle
* 1000) / HZ
;
4065 #endif /* CONFIG_CYZ_INTR */
4067 info
->closing_wait
= (unsigned short)arg
*HZ
/ 100;
4071 ret_val
= info
->closing_wait
/ (HZ
/ 100);
4074 ret_val
= get_serial_info(info
, argp
);
4077 ret_val
= set_serial_info(info
, argp
);
4079 case TIOCSERGETLSR
: /* Get line status register */
4080 ret_val
= get_lsr_info(info
, argp
);
4083 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
4084 * - mask passed in arg for lines of interest
4085 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
4086 * Caller should use TIOCGICOUNT to see which one it was
4089 CY_LOCK(info
, flags
);
4090 /* note the counters on entry */
4091 cnow
= info
->icount
;
4092 CY_UNLOCK(info
, flags
);
4093 ret_val
= wait_event_interruptible(info
->delta_msr_wait
, ({
4095 CY_LOCK(info
, flags
);
4096 cnow
= info
->icount
; /* atomic copy */
4097 CY_UNLOCK(info
, flags
);
4099 ((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
4100 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
4101 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
4102 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
));
4107 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
4108 * Return: write counters to the user passed counter struct
4109 * NB: both 1->0 and 0->1 transitions are counted except for
4110 * RI where only 0->1 is counted.
4113 CY_LOCK(info
, flags
);
4114 cnow
= info
->icount
;
4115 CY_UNLOCK(info
, flags
);
4117 ret_val
= put_user(cnow
.cts
, &p_cuser
->cts
);
4120 ret_val
= put_user(cnow
.dsr
, &p_cuser
->dsr
);
4123 ret_val
= put_user(cnow
.rng
, &p_cuser
->rng
);
4126 ret_val
= put_user(cnow
.dcd
, &p_cuser
->dcd
);
4129 ret_val
= put_user(cnow
.rx
, &p_cuser
->rx
);
4132 ret_val
= put_user(cnow
.tx
, &p_cuser
->tx
);
4135 ret_val
= put_user(cnow
.frame
, &p_cuser
->frame
);
4138 ret_val
= put_user(cnow
.overrun
, &p_cuser
->overrun
);
4141 ret_val
= put_user(cnow
.parity
, &p_cuser
->parity
);
4144 ret_val
= put_user(cnow
.brk
, &p_cuser
->brk
);
4147 ret_val
= put_user(cnow
.buf_overrun
, &p_cuser
->buf_overrun
);
4153 ret_val
= -ENOIOCTLCMD
;
4156 #ifdef CY_DEBUG_OTHER
4157 printk(KERN_DEBUG
"cyc:cy_ioctl done\n");
4164 * This routine allows the tty driver to be notified when
4165 * device's termios settings have changed. Note that a
4166 * well-designed tty driver should be prepared to accept the case
4167 * where old == NULL, and try to do something rational.
4169 static void cy_set_termios(struct tty_struct
*tty
, struct ktermios
*old_termios
)
4171 struct cyclades_port
*info
= tty
->driver_data
;
4173 #ifdef CY_DEBUG_OTHER
4174 printk(KERN_DEBUG
"cyc:cy_set_termios ttyC%d\n", info
->line
);
4177 if (tty
->termios
->c_cflag
== old_termios
->c_cflag
&&
4178 (tty
->termios
->c_iflag
& (IXON
| IXANY
)) ==
4179 (old_termios
->c_iflag
& (IXON
| IXANY
)))
4181 set_line_char(info
);
4183 if ((old_termios
->c_cflag
& CRTSCTS
) &&
4184 !(tty
->termios
->c_cflag
& CRTSCTS
)) {
4185 tty
->hw_stopped
= 0;
4190 * No need to wake up processes in open wait, since they
4191 * sample the CLOCAL flag once, and don't recheck it.
4192 * XXX It's not clear whether the current behavior is correct
4193 * or not. Hence, this may change.....
4195 if (!(old_termios
->c_cflag
& CLOCAL
) &&
4196 (tty
->termios
->c_cflag
& CLOCAL
))
4197 wake_up_interruptible(&info
->open_wait
);
4199 } /* cy_set_termios */
4201 /* This function is used to send a high-priority XON/XOFF character to
4204 static void cy_send_xchar(struct tty_struct
*tty
, char ch
)
4206 struct cyclades_port
*info
= tty
->driver_data
;
4207 struct cyclades_card
*card
;
4210 if (serial_paranoia_check(info
, tty
->name
, "cy_send_xchar"))
4219 channel
= info
->line
- card
->first_line
;
4221 if (IS_CYC_Z(*card
)) {
4222 if (ch
== STOP_CHAR(tty
))
4223 cyz_issue_cmd(card
, channel
, C_CM_SENDXOFF
, 0L);
4224 else if (ch
== START_CHAR(tty
))
4225 cyz_issue_cmd(card
, channel
, C_CM_SENDXON
, 0L);
4229 /* This routine is called by the upper-layer tty layer to signal
4230 that incoming characters should be throttled because the input
4231 buffers are close to full.
4233 static void cy_throttle(struct tty_struct
*tty
)
4235 struct cyclades_port
*info
= tty
->driver_data
;
4236 struct cyclades_card
*card
;
4237 unsigned long flags
;
4238 void __iomem
*base_addr
;
4239 int chip
, channel
, index
;
4241 #ifdef CY_DEBUG_THROTTLE
4244 printk(KERN_DEBUG
"cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty
, buf
),
4245 tty
->ldisc
.chars_in_buffer(tty
), info
->line
);
4248 if (serial_paranoia_check(info
, tty
->name
, "cy_throttle")) {
4255 if (!IS_CYC_Z(*card
))
4256 cy_send_xchar(tty
, STOP_CHAR(tty
));
4261 if (tty
->termios
->c_cflag
& CRTSCTS
) {
4262 channel
= info
->line
- card
->first_line
;
4263 if (!IS_CYC_Z(*card
)) {
4264 chip
= channel
>> 2;
4266 index
= card
->bus_index
;
4267 base_addr
= card
->base_addr
+
4268 (cy_chip_offset
[chip
] << index
);
4270 CY_LOCK(info
, flags
);
4271 cy_writeb(base_addr
+ (CyCAR
<< index
),
4273 if (info
->rtsdtr_inv
) {
4274 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
4277 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
4280 CY_UNLOCK(info
, flags
);
4288 * This routine notifies the tty driver that it should signal
4289 * that characters can now be sent to the tty without fear of
4290 * overrunning the input buffers of the line disciplines.
4292 static void cy_unthrottle(struct tty_struct
*tty
)
4294 struct cyclades_port
*info
= tty
->driver_data
;
4295 struct cyclades_card
*card
;
4296 unsigned long flags
;
4297 void __iomem
*base_addr
;
4298 int chip
, channel
, index
;
4300 #ifdef CY_DEBUG_THROTTLE
4303 printk(KERN_DEBUG
"cyc:unthrottle %s: %ld...ttyC%d\n",
4304 tty_name(tty
, buf
), tty
->ldisc
.chars_in_buffer(tty
),info
->line
);
4307 if (serial_paranoia_check(info
, tty
->name
, "cy_unthrottle")) {
4315 cy_send_xchar(tty
, START_CHAR(tty
));
4318 if (tty
->termios
->c_cflag
& CRTSCTS
) {
4320 channel
= info
->line
- card
->first_line
;
4321 if (!IS_CYC_Z(*card
)) {
4322 chip
= channel
>> 2;
4324 index
= card
->bus_index
;
4325 base_addr
= card
->base_addr
+
4326 (cy_chip_offset
[chip
] << index
);
4328 CY_LOCK(info
, flags
);
4329 cy_writeb(base_addr
+ (CyCAR
<< index
),
4331 if (info
->rtsdtr_inv
) {
4332 cy_writeb(base_addr
+ (CyMSVR2
<< index
),
4335 cy_writeb(base_addr
+ (CyMSVR1
<< index
),
4338 CY_UNLOCK(info
, flags
);
4343 } /* cy_unthrottle */
4345 /* cy_start and cy_stop provide software output flow control as a
4346 function of XON/XOFF, software CTS, and other such stuff.
4348 static void cy_stop(struct tty_struct
*tty
)
4350 struct cyclades_card
*cinfo
;
4351 struct cyclades_port
*info
= tty
->driver_data
;
4352 void __iomem
*base_addr
;
4353 int chip
, channel
, index
;
4354 unsigned long flags
;
4356 #ifdef CY_DEBUG_OTHER
4357 printk(KERN_DEBUG
"cyc:cy_stop ttyC%d\n", info
->line
);
4360 if (serial_paranoia_check(info
, tty
->name
, "cy_stop"))
4364 channel
= info
->line
- cinfo
->first_line
;
4365 if (!IS_CYC_Z(*cinfo
)) {
4366 index
= cinfo
->bus_index
;
4367 chip
= channel
>> 2;
4369 base_addr
= info
->card
->base_addr
+
4370 (cy_chip_offset
[chip
] << index
);
4372 CY_LOCK(info
, flags
);
4373 cy_writeb(base_addr
+ (CyCAR
<< index
),
4374 (u_char
)(channel
& 0x0003)); /* index channel */
4375 cy_writeb(base_addr
+ (CySRER
<< index
),
4376 readb(base_addr
+ (CySRER
<< index
)) & ~CyTxRdy
);
4377 CY_UNLOCK(info
, flags
);
4379 /* Nothing to do! */
4383 static void cy_start(struct tty_struct
*tty
)
4385 struct cyclades_card
*cinfo
;
4386 struct cyclades_port
*info
= tty
->driver_data
;
4387 void __iomem
*base_addr
;
4388 int chip
, channel
, index
;
4389 unsigned long flags
;
4391 #ifdef CY_DEBUG_OTHER
4392 printk(KERN_DEBUG
"cyc:cy_start ttyC%d\n", info
->line
);
4395 if (serial_paranoia_check(info
, tty
->name
, "cy_start"))
4399 channel
= info
->line
- cinfo
->first_line
;
4400 index
= cinfo
->bus_index
;
4401 if (!IS_CYC_Z(*cinfo
)) {
4402 chip
= channel
>> 2;
4404 base_addr
= info
->card
->base_addr
+
4405 (cy_chip_offset
[chip
] << index
);
4407 CY_LOCK(info
, flags
);
4408 cy_writeb(base_addr
+ (CyCAR
<< index
), (u_char
) (channel
& 0x0003)); /* index channel */
4409 cy_writeb(base_addr
+ (CySRER
<< index
),
4410 readb(base_addr
+ (CySRER
<< index
)) | CyTxRdy
);
4411 CY_UNLOCK(info
, flags
);
4413 /* Nothing to do! */
4417 static void cy_flush_buffer(struct tty_struct
*tty
)
4419 struct cyclades_port
*info
= tty
->driver_data
;
4420 struct cyclades_card
*card
;
4421 int channel
, retval
;
4422 unsigned long flags
;
4425 printk(KERN_DEBUG
"cyc:cy_flush_buffer ttyC%d\n", info
->line
);
4428 if (serial_paranoia_check(info
, tty
->name
, "cy_flush_buffer"))
4432 channel
= info
->line
- card
->first_line
;
4434 CY_LOCK(info
, flags
);
4435 info
->xmit_cnt
= info
->xmit_head
= info
->xmit_tail
= 0;
4436 CY_UNLOCK(info
, flags
);
4438 if (IS_CYC_Z(*card
)) { /* If it is a Z card, flush the on-board
4440 CY_LOCK(info
, flags
);
4441 retval
= cyz_issue_cmd(card
, channel
, C_CM_FLUSH_TX
, 0L);
4443 printk(KERN_ERR
"cyc: flush_buffer retval on ttyC%d "
4444 "was %x\n", info
->line
, retval
);
4446 CY_UNLOCK(info
, flags
);
4449 } /* cy_flush_buffer */
4452 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
4454 static void cy_hangup(struct tty_struct
*tty
)
4456 struct cyclades_port
*info
= tty
->driver_data
;
4458 #ifdef CY_DEBUG_OTHER
4459 printk(KERN_DEBUG
"cyc:cy_hangup ttyC%d\n", info
->line
);
4462 if (serial_paranoia_check(info
, tty
->name
, "cy_hangup"))
4465 cy_flush_buffer(tty
);
4469 #ifdef CY_DEBUG_COUNT
4470 printk(KERN_DEBUG
"cyc:cy_hangup (%d): setting count to 0\n",
4474 info
->flags
&= ~ASYNC_NORMAL_ACTIVE
;
4475 wake_up_interruptible(&info
->open_wait
);
4479 * ---------------------------------------------------------------------
4480 * cy_init() and friends
4482 * cy_init() is called at boot-time to initialize the serial driver.
4483 * ---------------------------------------------------------------------
4486 static void __devinit
cy_init_card(struct cyclades_card
*cinfo
)
4488 struct cyclades_port
*info
;
4490 unsigned int nports
;
4491 unsigned short chip_number
;
4494 spin_lock_init(&cinfo
->card_lock
);
4496 if (IS_CYC_Z(*cinfo
)) { /* Cyclades-Z */
4497 mailbox
= readl(&((struct RUNTIME_9060 __iomem
*)
4498 cinfo
->ctl_addr
)->mail_box_0
);
4499 nports
= (mailbox
== ZE_V1
) ? ZE_V1_NPORTS
: 8;
4500 cinfo
->intr_enabled
= 0;
4501 cinfo
->nports
= 0; /* Will be correctly set later, after
4504 index
= cinfo
->bus_index
;
4505 nports
= cinfo
->nports
= CyPORTS_PER_CHIP
* cinfo
->num_chips
;
4508 for (port
= cinfo
->first_line
; port
< cinfo
->first_line
+ nports
;
4510 info
= &cy_port
[port
];
4511 memset(info
, 0, sizeof(*info
));
4512 info
->magic
= CYCLADES_MAGIC
;
4515 info
->flags
= STD_COM_FLAGS
;
4516 info
->closing_wait
= CLOSING_WAIT_DELAY
;
4517 info
->close_delay
= 5 * HZ
/ 10;
4519 INIT_WORK(&info
->tqueue
, do_softint
);
4520 init_waitqueue_head(&info
->open_wait
);
4521 init_waitqueue_head(&info
->close_wait
);
4522 init_completion(&info
->shutdown_wait
);
4523 init_waitqueue_head(&info
->delta_msr_wait
);
4525 if (IS_CYC_Z(*cinfo
)) {
4526 info
->type
= PORT_STARTECH
;
4527 if (mailbox
== ZO_V1
)
4528 info
->xmit_fifo_size
= CYZ_FIFO_SIZE
;
4530 info
->xmit_fifo_size
= 4 * CYZ_FIFO_SIZE
;
4531 #ifdef CONFIG_CYZ_INTR
4532 init_timer(&cyz_rx_full_timer
[port
]);
4533 cyz_rx_full_timer
[port
].function
= NULL
;
4536 info
->type
= PORT_CIRRUS
;
4537 info
->xmit_fifo_size
= CyMAX_CHAR_FIFO
;
4538 info
->cor1
= CyPARITY_NONE
| Cy_1_STOP
| Cy_8_BITS
;
4540 info
->cor3
= 0x08; /* _very_ small rcv threshold */
4542 chip_number
= (port
- cinfo
->first_line
) / 4;
4543 if ((info
->chip_rev
= readb(cinfo
->base_addr
+
4544 (cy_chip_offset
[chip_number
] <<
4545 index
) + (CyGFRCR
<< index
))) >=
4547 /* It is a CD1400 rev. J or later */
4548 info
->tbpr
= baud_bpr_60
[13]; /* Tx BPR */
4549 info
->tco
= baud_co_60
[13]; /* Tx CO */
4550 info
->rbpr
= baud_bpr_60
[13]; /* Rx BPR */
4551 info
->rco
= baud_co_60
[13]; /* Rx CO */
4552 info
->rtsdtr_inv
= 1;
4554 info
->tbpr
= baud_bpr_25
[13]; /* Tx BPR */
4555 info
->tco
= baud_co_25
[13]; /* Tx CO */
4556 info
->rbpr
= baud_bpr_25
[13]; /* Rx BPR */
4557 info
->rco
= baud_co_25
[13]; /* Rx CO */
4558 info
->rtsdtr_inv
= 0;
4560 info
->read_status_mask
= CyTIMEOUT
| CySPECHAR
|
4561 CyBREAK
| CyPARITY
| CyFRAME
| CyOVERRUN
;
4566 #ifndef CONFIG_CYZ_INTR
4567 if (IS_CYC_Z(*cinfo
) && !timer_pending(&cyz_timerlist
)) {
4568 mod_timer(&cyz_timerlist
, jiffies
+ 1);
4570 printk(KERN_DEBUG
"Cyclades-Z polling initialized\n");
4576 /* initialize chips on Cyclom-Y card -- return number of valid
4577 chips (which is number of ports/4) */
4578 static unsigned short __devinit
cyy_init_card(void __iomem
*true_base_addr
,
4581 unsigned int chip_number
;
4582 void __iomem
*base_addr
;
4584 cy_writeb(true_base_addr
+ (Cy_HwReset
<< index
), 0);
4585 /* Cy_HwReset is 0x1400 */
4586 cy_writeb(true_base_addr
+ (Cy_ClrIntr
<< index
), 0);
4587 /* Cy_ClrIntr is 0x1800 */
4590 for (chip_number
= 0; chip_number
< CyMAX_CHIPS_PER_CARD
; chip_number
++) {
4592 true_base_addr
+ (cy_chip_offset
[chip_number
] << index
);
4594 if (readb(base_addr
+ (CyCCR
<< index
)) != 0x00) {
4596 printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
4597 chip_number, (unsigned long)base_addr);
4602 cy_writeb(base_addr
+ (CyGFRCR
<< index
), 0);
4605 /* The Cyclom-16Y does not decode address bit 9 and therefore
4606 cannot distinguish between references to chip 0 and a non-
4607 existent chip 4. If the preceding clearing of the supposed
4608 chip 4 GFRCR register appears at chip 0, there is no chip 4
4609 and this must be a Cyclom-16Y, not a Cyclom-32Ye.
4611 if (chip_number
== 4 && readb(true_base_addr
+
4612 (cy_chip_offset
[0] << index
) +
4613 (CyGFRCR
<< index
)) == 0) {
4617 cy_writeb(base_addr
+ (CyCCR
<< index
), CyCHIP_RESET
);
4620 if (readb(base_addr
+ (CyGFRCR
<< index
)) == 0x00) {
4622 printk(" chip #%d at %#6lx is not responding ",
4623 chip_number, (unsigned long)base_addr);
4624 printk("(GFRCR stayed 0)\n",
4628 if ((0xf0 & (readb(base_addr
+ (CyGFRCR
<< index
)))) !=
4631 printk(" chip #%d at %#6lx is not valid (GFRCR == "
4633 chip_number, (unsigned long)base_addr,
4634 base_addr[CyGFRCR<<index]);
4638 cy_writeb(base_addr
+ (CyGCR
<< index
), CyCH0_SERIAL
);
4639 if (readb(base_addr
+ (CyGFRCR
<< index
)) >= CD1400_REV_J
) {
4640 /* It is a CD1400 rev. J or later */
4641 /* Impossible to reach 5ms with this chip.
4642 Changed to 2ms instead (f = 500 Hz). */
4643 cy_writeb(base_addr
+ (CyPPR
<< index
), CyCLOCK_60_2MS
);
4646 cy_writeb(base_addr
+ (CyPPR
<< index
), CyCLOCK_25_5MS
);
4650 printk(" chip #%d at %#6lx is rev 0x%2x\n",
4651 chip_number, (unsigned long)base_addr,
4652 readb(base_addr+(CyGFRCR<<index)));
4656 } /* cyy_init_card */
4659 * ---------------------------------------------------------------------
4660 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
4661 * sets global variables and return the number of ISA boards found.
4662 * ---------------------------------------------------------------------
4664 static int __init
cy_detect_isa(void)
4667 unsigned short cy_isa_irq
, nboard
;
4668 void __iomem
*cy_isa_address
;
4669 unsigned short i
, j
, cy_isa_nchan
;
4677 /* Check for module parameters */
4678 for (i
= 0; i
< NR_CARDS
; i
++) {
4679 if (maddr
[i
] || i
) {
4681 cy_isa_addresses
[i
] = maddr
[i
];
4688 /* scan the address table probing for Cyclom-Y/ISA boards */
4689 for (i
= 0; i
< NR_ISA_ADDRS
; i
++) {
4690 unsigned int isa_address
= cy_isa_addresses
[i
];
4691 if (isa_address
== 0x0000) {
4695 /* probe for CD1400... */
4696 cy_isa_address
= ioremap(isa_address
, CyISA_Ywin
);
4697 cy_isa_nchan
= CyPORTS_PER_CHIP
*
4698 cyy_init_card(cy_isa_address
, 0);
4699 if (cy_isa_nchan
== 0) {
4703 if (isparam
&& irq
[i
])
4704 cy_isa_irq
= irq
[i
];
4707 /* find out the board's irq by probing */
4708 cy_isa_irq
= detect_isa_irq(cy_isa_address
);
4709 if (cy_isa_irq
== 0) {
4710 printk(KERN_ERR
"Cyclom-Y/ISA found at 0x%lx, but the "
4711 "IRQ could not be detected.\n",
4712 (unsigned long)cy_isa_address
);
4716 if ((cy_next_channel
+ cy_isa_nchan
) > NR_PORTS
) {
4717 printk(KERN_ERR
"Cyclom-Y/ISA found at 0x%lx, but no "
4718 "more channels are available. Change NR_PORTS "
4719 "in cyclades.c and recompile kernel.\n",
4720 (unsigned long)cy_isa_address
);
4723 /* fill the next cy_card structure available */
4724 for (j
= 0; j
< NR_CARDS
; j
++) {
4725 if (cy_card
[j
].base_addr
== 0)
4728 if (j
== NR_CARDS
) { /* no more cy_cards available */
4729 printk(KERN_ERR
"Cyclom-Y/ISA found at 0x%lx, but no "
4730 "more cards can be used. Change NR_CARDS in "
4731 "cyclades.c and recompile kernel.\n",
4732 (unsigned long)cy_isa_address
);
4737 if (request_irq(cy_isa_irq
, cyy_interrupt
,
4738 IRQF_DISABLED
, "Cyclom-Y", &cy_card
[j
])) {
4739 printk(KERN_ERR
"Cyclom-Y/ISA found at 0x%lx, but "
4740 "could not allocate IRQ#%d.\n",
4741 (unsigned long)cy_isa_address
, cy_isa_irq
);
4746 cy_card
[j
].base_addr
= cy_isa_address
;
4747 cy_card
[j
].ctl_addr
= NULL
;
4748 cy_card
[j
].irq
= (int)cy_isa_irq
;
4749 cy_card
[j
].bus_index
= 0;
4750 cy_card
[j
].first_line
= cy_next_channel
;
4751 cy_card
[j
].num_chips
= cy_isa_nchan
/ 4;
4752 cy_init_card(&cy_card
[j
]);
4755 printk(KERN_INFO
"Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: "
4756 "%d channels starting from port %d\n",
4757 j
+ 1, (unsigned long)cy_isa_address
,
4758 (unsigned long)(cy_isa_address
+ (CyISA_Ywin
- 1)),
4759 cy_isa_irq
, cy_isa_nchan
, cy_next_channel
);
4761 for (j
= cy_next_channel
;
4762 j
< cy_next_channel
+ cy_isa_nchan
; j
++)
4763 tty_register_device(cy_serial_driver
, j
, NULL
);
4764 cy_next_channel
+= cy_isa_nchan
;
4769 #endif /* CONFIG_ISA */
4770 } /* cy_detect_isa */
4773 static void __devinit
plx_init(void __iomem
* addr
, __u32 initctl
)
4776 cy_writel(addr
+ initctl
, readl(addr
+ initctl
) | 0x40000000);
4778 cy_writel(addr
+ initctl
, readl(addr
+ initctl
) & ~0x40000000);
4780 /* Reload Config. Registers from EEPROM */
4781 cy_writel(addr
+ initctl
, readl(addr
+ initctl
) | 0x20000000);
4783 cy_writel(addr
+ initctl
, readl(addr
+ initctl
) & ~0x20000000);
4786 static int __devinit
cy_init_Ze(struct RUNTIME_9060 __iomem
*cy_pci_addr0
,
4787 int cy_pci_irq
, struct pci_dev
*pdev
)
4789 void __iomem
*cy_pci_addr2
;
4791 unsigned short cy_pci_nchan
;
4793 cy_pci_addr2
= pci_iomap(pdev
, 2, CyPCI_Ze_win
);
4795 readl(&cy_pci_addr0
->mail_box_0
);
4796 dev_dbg(&pdev
->dev
, "new Cyclades-Z board. FPGA not loaded\n");
4798 /* This must be the new Cyclades-Ze/PCI. */
4799 cy_pci_nchan
= ZE_V1_NPORTS
;
4801 if ((cy_next_channel
+ cy_pci_nchan
) > NR_PORTS
) {
4802 dev_err(&pdev
->dev
, "Cyclades-Ze/PCI found, but no channels "
4803 "are available.\nChange NR_PORTS in cyclades.c "
4804 "and recompile kernel.\n");
4808 /* fill the next cy_card structure available */
4809 for (j
= 0; j
< NR_CARDS
; j
++) {
4810 if (cy_card
[j
].base_addr
== 0)
4813 if (j
== NR_CARDS
) { /* no more cy_cards available */
4814 dev_err(&pdev
->dev
, "Cyclades-Ze/PCI found, but no more "
4815 "cards can be used.\nChange NR_CARDS in "
4816 "cyclades.c and recompile kernel.\n");
4819 #ifdef CONFIG_CYZ_INTR
4820 /* allocate IRQ only if board has an IRQ */
4821 if ((cy_pci_irq
!= 0) && (cy_pci_irq
!= 255)) {
4822 if (request_irq(cy_pci_irq
, cyz_interrupt
,
4823 IRQF_SHARED
, "Cyclades-Z",
4825 dev_err(&pdev
->dev
, "could not allocate IRQ.\n");
4829 #endif /* CONFIG_CYZ_INTR */
4832 cy_card
[j
].base_addr
= cy_pci_addr2
;
4833 cy_card
[j
].ctl_addr
= cy_pci_addr0
;
4834 cy_card
[j
].irq
= cy_pci_irq
;
4835 cy_card
[j
].bus_index
= 1;
4836 cy_card
[j
].first_line
= cy_next_channel
;
4837 cy_card
[j
].num_chips
= -1;
4838 cy_init_card(&cy_card
[j
]);
4839 pci_set_drvdata(pdev
, &cy_card
[j
]);
4841 dev_info(&pdev
->dev
, "Cyclades-Ze/PCI #%d found: %d channels starting "
4842 "from port %d.\n", j
+ 1, cy_pci_nchan
, cy_next_channel
);
4844 for (j
= cy_next_channel
; j
< cy_next_channel
+ cy_pci_nchan
; j
++)
4845 tty_register_device(cy_serial_driver
, j
, &pdev
->dev
);
4846 cy_next_channel
+= cy_pci_nchan
;
4851 static int __devinit
cy_pci_probe(struct pci_dev
*pdev
,
4852 const struct pci_device_id
*ent
)
4854 unsigned char cyy_rev_id
;
4857 void __iomem
*cy_pci_addr0
, *cy_pci_addr2
;
4858 unsigned int device_id
;
4859 unsigned short j
, cy_pci_nchan
, plx_ver
;
4862 retval
= pci_enable_device(pdev
);
4864 dev_err(&pdev
->dev
, "cannot enable device\n");
4868 /* read PCI configuration area */
4869 cy_pci_irq
= pdev
->irq
;
4870 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &cyy_rev_id
);
4872 device_id
= pdev
->device
& ~PCI_DEVICE_ID_MASK
;
4874 if (device_id
== PCI_DEVICE_ID_CYCLOM_Y_Lo
||
4875 device_id
== PCI_DEVICE_ID_CYCLOM_Y_Hi
) {
4876 dev_dbg(&pdev
->dev
, "Cyclom-Y/PCI found\n");
4878 if (pci_resource_flags(pdev
, 2) & IORESOURCE_IO
) {
4879 dev_warn(&pdev
->dev
, "PCI I/O bit incorrectly "
4880 "set. Ignoring it...\n");
4881 pdev
->resource
[2].flags
&= ~IORESOURCE_IO
;
4884 /* Although we don't use this I/O region, we should
4885 request it from the kernel anyway, to avoid problems
4886 with other drivers accessing it. */
4887 retval
= pci_request_regions(pdev
, "Cyclom-Y");
4889 dev_err(&pdev
->dev
, "failed to reserve resources\n");
4892 #if defined(__alpha__)
4893 if (device_id
== PCI_DEVICE_ID_CYCLOM_Y_Lo
) { /* below 1M? */
4894 dev_err(&pdev
->dev
, "Cyclom-Y/PCI not supported for "
4895 "low addresses on Alpha systems.\n");
4899 cy_pci_addr0
= pci_iomap(pdev
, 0, CyPCI_Yctl
);
4900 cy_pci_addr2
= pci_iomap(pdev
, 2, CyPCI_Ywin
);
4902 dev_dbg(&pdev
->dev
, "Cyclom-Y/PCI: relocate winaddr=0x%p "
4903 "ctladdr=0x%p\n", cy_pci_addr2
, cy_pci_addr0
);
4905 cy_pci_nchan
= (unsigned short)(CyPORTS_PER_CHIP
*
4906 cyy_init_card(cy_pci_addr2
, 1));
4907 if (cy_pci_nchan
== 0) {
4908 dev_err(&pdev
->dev
, "Cyclom-Y PCI host card with no "
4909 "Serial-Modules\n");
4912 if ((cy_next_channel
+ cy_pci_nchan
) > NR_PORTS
) {
4913 dev_err(&pdev
->dev
, "Cyclom-Y/PCI found, but no "
4914 "channels are available. Change NR_PORTS in "
4915 "cyclades.c and recompile kernel.\n");
4918 /* fill the next cy_card structure available */
4919 for (j
= 0; j
< NR_CARDS
; j
++) {
4920 if (cy_card
[j
].base_addr
== 0)
4923 if (j
== NR_CARDS
) { /* no more cy_cards available */
4924 dev_err(&pdev
->dev
, "Cyclom-Y/PCI found, but no more "
4925 "cards can be used. Change NR_CARDS in "
4926 "cyclades.c and recompile kernel.\n");
4931 retval
= request_irq(cy_pci_irq
, cyy_interrupt
,
4932 IRQF_SHARED
, "Cyclom-Y", &cy_card
[j
]);
4934 dev_err(&pdev
->dev
, "could not allocate IRQ\n");
4939 cy_card
[j
].base_addr
= cy_pci_addr2
;
4940 cy_card
[j
].ctl_addr
= cy_pci_addr0
;
4941 cy_card
[j
].irq
= cy_pci_irq
;
4942 cy_card
[j
].bus_index
= 1;
4943 cy_card
[j
].first_line
= cy_next_channel
;
4944 cy_card
[j
].num_chips
= cy_pci_nchan
/ 4;
4945 cy_init_card(&cy_card
[j
]);
4946 pci_set_drvdata(pdev
, &cy_card
[j
]);
4948 /* enable interrupts in the PCI interface */
4949 plx_ver
= readb(cy_pci_addr2
+ CyPLX_VER
) & 0x0f;
4953 cy_writeb(cy_pci_addr0
+ 0x4c, 0x43);
4958 default: /* Old boards, use PLX_9060 */
4960 plx_init(cy_pci_addr0
, 0x6c);
4961 /* For some yet unknown reason, once the PLX9060 reloads
4962 the EEPROM, the IRQ is lost and, thus, we have to
4963 re-write it to the PCI config. registers.
4964 This will remain here until we find a permanent
4966 pci_write_config_byte(pdev
, PCI_INTERRUPT_LINE
,
4969 cy_writew(cy_pci_addr0
+ 0x68,
4970 readw(cy_pci_addr0
+ 0x68) | 0x0900);
4974 dev_info(&pdev
->dev
, "Cyclom-Y/PCI #%d found: %d channels "
4975 "starting from port %d.\n", j
+ 1, cy_pci_nchan
,
4978 for (j
= cy_next_channel
;
4979 j
< cy_next_channel
+ cy_pci_nchan
; j
++)
4980 tty_register_device(cy_serial_driver
, j
, &pdev
->dev
);
4982 cy_next_channel
+= cy_pci_nchan
;
4983 } else if (device_id
== PCI_DEVICE_ID_CYCLOM_Z_Lo
) {
4984 dev_err(&pdev
->dev
, "Cyclades-Z/PCI not supported for "
4987 } else if (device_id
== PCI_DEVICE_ID_CYCLOM_Z_Hi
) {
4988 dev_dbg(&pdev
->dev
, "Cyclades-Z/PCI found\n");
4990 cy_pci_addr0
= pci_iomap(pdev
, 0, CyPCI_Zctl
);
4992 /* Disable interrupts on the PLX before resetting it */
4993 cy_writew(cy_pci_addr0
+ 0x68,
4994 readw(cy_pci_addr0
+ 0x68) & ~0x0900);
4996 plx_init(cy_pci_addr0
, 0x6c);
4997 /* For some yet unknown reason, once the PLX9060 reloads
4998 the EEPROM, the IRQ is lost and, thus, we have to
4999 re-write it to the PCI config. registers.
5000 This will remain here until we find a permanent
5002 pci_write_config_byte(pdev
, PCI_INTERRUPT_LINE
, cy_pci_irq
);
5004 mailbox
= (__u32
)readl(&((struct RUNTIME_9060 __iomem
*)
5005 cy_pci_addr0
)->mail_box_0
);
5007 if (pci_resource_flags(pdev
, 2) & IORESOURCE_IO
) {
5008 dev_warn(&pdev
->dev
, "PCI I/O bit incorrectly "
5009 "set. Ignoring it...\n");
5010 pdev
->resource
[2].flags
&= ~IORESOURCE_IO
;
5013 /* Although we don't use this I/O region, we should
5014 request it from the kernel anyway, to avoid problems
5015 with other drivers accessing it. */
5016 retval
= pci_request_regions(pdev
, "Cyclades-Z");
5018 dev_err(&pdev
->dev
, "failed to reserve resources\n");
5022 if (mailbox
== ZE_V1
) {
5023 retval
= cy_init_Ze(cy_pci_addr0
, cy_pci_irq
, pdev
);
5026 cy_pci_addr2
= pci_iomap(pdev
, 2, CyPCI_Zwin
);
5029 dev_dbg(&pdev
->dev
, "Cyclades-Z/PCI: relocate winaddr=0x%p "
5030 "ctladdr=0x%p\n", cy_pci_addr2
, cy_pci_addr0
);
5032 if (mailbox
== ZO_V1
) {
5033 cy_writel(&((struct RUNTIME_9060
*)
5034 (cy_pci_addr0
))->loc_addr_base
,
5036 dev_info(&pdev
->dev
, "Cyclades-8Zo/PCI: FPGA id %lx, "
5037 "ver %lx\n", (ulong
)(0xff &
5038 readl(&((struct CUSTOM_REG
*)
5039 cy_pci_addr2
)->fpga_id
)),
5040 (ulong
)(0xff & readl(&((struct CUSTOM_REG
*)
5041 cy_pci_addr2
)->fpga_version
)));
5042 cy_writel(&((struct RUNTIME_9060
*)
5043 cy_pci_addr0
)->loc_addr_base
, WIN_RAM
);
5045 dev_info(&pdev
->dev
, "Cyclades-Z/PCI: New Cyclades-Z "
5046 "board. FPGA not loaded\n");
5049 /* The following clears the firmware id word. This
5050 ensures that the driver will not attempt to talk to
5051 the board until it has been properly initialized.
5053 if ((mailbox
== ZO_V1
) || (mailbox
== ZO_V2
))
5054 cy_writel(cy_pci_addr2
+ ID_ADDRESS
, 0L);
5056 /* This must be a Cyclades-8Zo/PCI. The extendable
5057 version will have a different device_id and will
5058 be allocated its maximum number of ports. */
5061 if ((cy_next_channel
+ cy_pci_nchan
) > NR_PORTS
) {
5062 dev_err(&pdev
->dev
, "Cyclades-8Zo/PCI found, but no "
5063 "channels are available. Change NR_PORTS in "
5064 "cyclades.c and recompile kernel.\n");
5068 /* fill the next cy_card structure available */
5069 for (j
= 0; j
< NR_CARDS
; j
++) {
5070 if (cy_card
[j
].base_addr
== 0)
5073 if (j
== NR_CARDS
) { /* no more cy_cards available */
5074 dev_err(&pdev
->dev
, "Cyclades-8Zo/PCI found, but no "
5075 "more cards can be used. Change NR_CARDS in "
5076 "cyclades.c and recompile kernel.\n");
5079 #ifdef CONFIG_CYZ_INTR
5080 /* allocate IRQ only if board has an IRQ */
5081 if ((cy_pci_irq
!= 0) && (cy_pci_irq
!= 255)) {
5082 retval
= request_irq(cy_pci_irq
, cyz_interrupt
,
5083 IRQF_SHARED
, "Cyclades-Z",
5086 dev_err(&pdev
->dev
, "could not allocate IRQ\n");
5090 #endif /* CONFIG_CYZ_INTR */
5093 cy_card
[j
].base_addr
= cy_pci_addr2
;
5094 cy_card
[j
].ctl_addr
= cy_pci_addr0
;
5095 cy_card
[j
].irq
= cy_pci_irq
;
5096 cy_card
[j
].bus_index
= 1;
5097 cy_card
[j
].first_line
= cy_next_channel
;
5098 cy_card
[j
].num_chips
= -1;
5099 cy_init_card(&cy_card
[j
]);
5100 pci_set_drvdata(pdev
, &cy_card
[j
]);
5102 dev_info(&pdev
->dev
, "Cyclades-8Zo/PCI #%d found: %d channels "
5103 "starting from port %d.\n", j
+ 1, cy_pci_nchan
,
5106 for (j
= cy_next_channel
;
5107 j
< cy_next_channel
+ cy_pci_nchan
; j
++)
5108 tty_register_device(cy_serial_driver
, j
, &pdev
->dev
);
5109 cy_next_channel
+= cy_pci_nchan
;
5115 static void __devexit
cy_pci_remove(struct pci_dev
*pdev
)
5117 struct cyclades_card
*cinfo
= pci_get_drvdata(pdev
);
5120 /* non-Z with old PLX */
5121 if (!IS_CYC_Z(*cinfo
) && (readb(cinfo
->base_addr
+ CyPLX_VER
) & 0x0f) ==
5123 cy_writeb(cinfo
->ctl_addr
+ 0x4c, 0);
5125 #ifndef CONFIG_CYZ_INTR
5126 if (!IS_CYC_Z(*cinfo
))
5128 cy_writew(cinfo
->ctl_addr
+ 0x68,
5129 readw(cinfo
->ctl_addr
+ 0x68) & ~0x0900);
5131 pci_iounmap(pdev
, cinfo
->base_addr
);
5132 if (cinfo
->ctl_addr
)
5133 pci_iounmap(pdev
, cinfo
->ctl_addr
);
5135 #ifndef CONFIG_CYZ_INTR
5136 && !IS_CYC_Z(*cinfo
)
5137 #endif /* CONFIG_CYZ_INTR */
5139 free_irq(cinfo
->irq
, cinfo
);
5140 pci_release_regions(pdev
);
5142 cinfo
->base_addr
= NULL
;
5143 for (i
= cinfo
->first_line
; i
< cinfo
->first_line
+ cinfo
->nports
; i
++){
5144 cy_port
[i
].line
= -1;
5145 cy_port
[i
].magic
= -1;
5147 for (i
= cinfo
->first_line
; i
< cinfo
->first_line
+
5149 tty_unregister_device(cy_serial_driver
, i
);
5152 static struct pci_driver cy_pci_driver
= {
5154 .id_table
= cy_pci_dev_id
,
5155 .probe
= cy_pci_probe
,
5156 .remove
= __devexit_p(cy_pci_remove
)
5161 cyclades_get_proc_info(char *buf
, char **start
, off_t offset
, int length
,
5162 int *eof
, void *data
)
5164 struct cyclades_port
*info
;
5170 __u32 cur_jifs
= jiffies
;
5172 size
= sprintf(buf
, "Dev TimeOpen BytesOut IdleOut BytesIn "
5173 "IdleIn Overruns Ldisc\n");
5178 /* Output one line for each known port */
5179 for (i
= 0; i
< NR_PORTS
&& cy_port
[i
].line
>= 0; i
++) {
5183 size
= sprintf(buf
+ len
, "%3d %8lu %10lu %8lu %10lu "
5184 "%8lu %9lu %6ld\n", info
->line
,
5185 (cur_jifs
- info
->idle_stats
.in_use
) / HZ
,
5186 info
->idle_stats
.xmit_bytes
,
5187 (cur_jifs
- info
->idle_stats
.xmit_idle
) / HZ
,
5188 info
->idle_stats
.recv_bytes
,
5189 (cur_jifs
- info
->idle_stats
.recv_idle
) / HZ
,
5190 info
->idle_stats
.overruns
,
5191 (long)info
->tty
->ldisc
.num
);
5193 size
= sprintf(buf
+ len
, "%3d %8lu %10lu %8lu %10lu "
5195 info
->line
, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
5203 if (pos
> offset
+ length
)
5208 *start
= buf
+ (offset
- begin
); /* Start of wanted data */
5209 len
-= (offset
- begin
); /* Start slop */
5211 len
= length
; /* Ending slop */
5217 /* The serial driver boot-time initialization code!
5218 Hardware I/O ports are mapped to character special devices on a
5219 first found, first allocated manner. That is, this code searches
5220 for Cyclom cards in the system. As each is found, it is probed
5221 to discover how many chips (and thus how many ports) are present.
5222 These ports are mapped to the tty ports 32 and upward in monotonic
5223 fashion. If an 8-port card is replaced with a 16-port card, the
5224 port mapping on a following card will shift.
5226 This approach is different from what is used in the other serial
5227 device driver because the Cyclom is more properly a multiplexer,
5228 not just an aggregation of serial ports on one card.
5230 If there are more cards with more ports than have been
5231 statically allocated above, a warning is printed and the
5232 extra ports are ignored.
5235 static const struct tty_operations cy_ops
= {
5239 .put_char
= cy_put_char
,
5240 .flush_chars
= cy_flush_chars
,
5241 .write_room
= cy_write_room
,
5242 .chars_in_buffer
= cy_chars_in_buffer
,
5243 .flush_buffer
= cy_flush_buffer
,
5245 .throttle
= cy_throttle
,
5246 .unthrottle
= cy_unthrottle
,
5247 .set_termios
= cy_set_termios
,
5250 .hangup
= cy_hangup
,
5251 .break_ctl
= cy_break
,
5252 .wait_until_sent
= cy_wait_until_sent
,
5253 .read_proc
= cyclades_get_proc_info
,
5254 .tiocmget
= cy_tiocmget
,
5255 .tiocmset
= cy_tiocmset
,
5258 static int __init
cy_init(void)
5260 unsigned int i
, nboards
;
5261 int retval
= -ENOMEM
;
5263 cy_serial_driver
= alloc_tty_driver(NR_PORTS
);
5264 if (!cy_serial_driver
)
5267 printk(KERN_INFO
"Cyclades driver " CY_VERSION
" (built %s %s)\n",
5268 __DATE__
, __TIME__
);
5270 /* Initialize the tty_driver structure */
5272 cy_serial_driver
->owner
= THIS_MODULE
;
5273 cy_serial_driver
->driver_name
= "cyclades";
5274 cy_serial_driver
->name
= "ttyC";
5275 cy_serial_driver
->major
= CYCLADES_MAJOR
;
5276 cy_serial_driver
->minor_start
= 0;
5277 cy_serial_driver
->type
= TTY_DRIVER_TYPE_SERIAL
;
5278 cy_serial_driver
->subtype
= SERIAL_TYPE_NORMAL
;
5279 cy_serial_driver
->init_termios
= tty_std_termios
;
5280 cy_serial_driver
->init_termios
.c_cflag
=
5281 B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
;
5282 cy_serial_driver
->flags
= TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
;
5283 tty_set_operations(cy_serial_driver
, &cy_ops
);
5285 retval
= tty_register_driver(cy_serial_driver
);
5287 printk(KERN_ERR
"Couldn't register Cyclades serial driver\n");
5291 for (i
= 0; i
< NR_PORTS
; i
++) {
5292 cy_port
[i
].line
= -1;
5293 cy_port
[i
].magic
= -1;
5296 /* the code below is responsible to find the boards. Each different
5297 type of board has its own detection routine. If a board is found,
5298 the next cy_card structure available is set by the detection
5299 routine. These functions are responsible for checking the
5300 availability of cy_card and cy_port data structures and updating
5301 the cy_next_channel. */
5303 /* look for isa boards */
5304 nboards
= cy_detect_isa();
5307 /* look for pci boards */
5308 retval
= pci_register_driver(&cy_pci_driver
);
5309 if (retval
&& !nboards
)
5315 tty_unregister_driver(cy_serial_driver
);
5317 put_tty_driver(cy_serial_driver
);
5322 static void __exit
cy_cleanup_module(void)
5326 #ifndef CONFIG_CYZ_INTR
5327 del_timer_sync(&cyz_timerlist
);
5328 #endif /* CONFIG_CYZ_INTR */
5330 if ((e1
= tty_unregister_driver(cy_serial_driver
)))
5331 printk(KERN_ERR
"failed to unregister Cyclades serial "
5332 "driver(%d)\n", e1
);
5334 put_tty_driver(cy_serial_driver
);
5337 pci_unregister_driver(&cy_pci_driver
);
5340 for (i
= 0; i
< NR_CARDS
; i
++) {
5341 if (cy_card
[i
].base_addr
) {
5342 /* clear interrupt */
5343 cy_writeb(cy_card
[i
].base_addr
+ Cy_ClrIntr
, 0);
5344 iounmap(cy_card
[i
].base_addr
);
5345 if (cy_card
[i
].ctl_addr
)
5346 iounmap(cy_card
[i
].ctl_addr
);
5348 #ifndef CONFIG_CYZ_INTR
5349 && !IS_CYC_Z(cy_card
[i
])
5350 #endif /* CONFIG_CYZ_INTR */
5352 free_irq(cy_card
[i
].irq
, &cy_card
[i
]);
5353 for (e1
= cy_card
[i
].first_line
;
5354 e1
< cy_card
[i
].first_line
+
5355 cy_card
[i
].nports
; e1
++)
5356 tty_unregister_device(cy_serial_driver
, e1
);
5359 } /* cy_cleanup_module */
5361 module_init(cy_init
);
5362 module_exit(cy_cleanup_module
);
5364 MODULE_LICENSE("GPL");