Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
4 | |
5 | /* | |
6 | * linux/drivers/char/cyclades.c | |
7 | * | |
8 | * This file contains the driver for the Cyclades async multiport | |
9 | * serial boards. | |
10 | * | |
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>. | |
14 | * | |
15 | * For Technical support and installation problems, please send e-mail | |
16 | * to support@cyclades.com. | |
17 | * | |
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. | |
22 | * | |
23 | * This version supports shared IRQ's (only for PCI boards). | |
24 | * | |
25 | * $Log: cyclades.c,v $ | |
26 | * Prevent users from opening non-existing Z ports. | |
27 | * | |
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. | |
32 | * | |
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 | |
37 | * (Cyclades-Z only). | |
38 | * | |
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 | |
44 | * board. | |
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". | |
50 | * | |
51 | * Revision 2.3.2.5 2000/01/19 14:35:33 ivan | |
52 | * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. | |
53 | * | |
54 | * Revision 2.3.2.4 2000/01/17 09:19:40 ivan | |
55 | * Fixed SMP locking in Cyclom-Y interrupt handler. | |
56 | * | |
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 | |
61 | * (Cyclades-Z only); | |
62 | * Revisited printk's for Z debug; | |
63 | * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; | |
64 | * | |
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 | |
70 | * (Cyclades-Z only); | |
71 | * Fixed bug in block_til_ready logic that would lead to a system crash; | |
72 | * Revisited cy_close spinlock usage; | |
73 | * | |
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; | |
83 | * | |
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] | |
88 | * functions; | |
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; | |
97 | * | |
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); | |
107 | * | |
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' | |
114 | * TTY facility; | |
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). | |
118 | * | |
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 | |
124 | * PCI Device ID's). | |
125 | * | |
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). | |
129 | * | |
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. | |
133 | * | |
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. | |
137 | * | |
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. | |
142 | * | |
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 | |
146 | * (Cyclom-Y only). | |
147 | * | |
148 | * Revision 2.2.1.5 1998/08/10 18:10:28 ivan | |
149 | * Fixed Cyclom-4Yo hardware detection bug. | |
150 | * | |
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. | |
156 | * | |
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 | |
160 | * was created); | |
161 | * removed conditional compilation for new/old PCI structure support | |
162 | * (now the driver only supports the new PCI structure). | |
163 | * | |
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. | |
167 | * | |
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. | |
174 | * | |
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). | |
181 | * | |
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. | |
186 | * | |
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); | |
198 | * | |
199 | * Revision 1.36.4.33 1997/06/27 19:00:00 ivan | |
200 | * Fixes related to kernel version conditional | |
201 | * compilation. | |
202 | * | |
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). | |
206 | * | |
207 | * Revision 1.36.4.31 1997/06/03 15:30:00 ivan | |
208 | * Changes to define the memory window according to the | |
209 | * board type. | |
210 | * | |
211 | * Revision 1.36.4.30 1997/05/16 15:30:00 daniel | |
212 | * Changes to support new cycladesZ boards. | |
213 | * | |
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. | |
227 | * | |
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 | |
236 | * linuxer. | |
237 | * | |
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 | |
241 | * varying too fast. | |
242 | * | |
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 | |
247 | * CH_CTRL struct. | |
248 | * Deleted some debug messages. | |
249 | * | |
250 | * Revision 1.36.4.26 1997/02/27 12:00:00 daniel | |
251 | * Included check for NULL tty pointer in cyz_poll. | |
252 | * | |
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;" | |
257 | * | |
258 | * Revision 1.36.4.24 1997/02/24 11:00:00 daniel | |
259 | * Changed low water threshold for buffer xmit_buf | |
260 | * | |
261 | * Revision 1.36.4.23 1996/12/02 21:50:16 bentson | |
262 | * Marcio provided fix to modem status fetch for -Z | |
263 | * | |
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) | |
267 | * | |
268 | * Revision 1.36.4.21 1996/09/10 17:00:10 bentson | |
269 | * shift from CPU-bound to memcopy in cyz_polling operation | |
270 | * | |
271 | * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson | |
272 | * Added support to set and report higher speeds. | |
273 | * | |
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. | |
277 | * | |
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; | |
33430dc5 | 282 | * fix race condition in -Z buffer management; only -Y needs to explicitly |
1da177e4 LT |
283 | * flush chars; tidy up some startup messages; |
284 | * | |
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; | |
288 | * | |
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; | |
294 | * | |
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 | |
298 | * | |
299 | * Revision 1.36.4.15 1996/07/19 22:30:06 bentson | |
300 | * check more -Z board status; shorten boot message | |
301 | * | |
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; | |
306 | * | |
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) | |
310 | * | |
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). | |
315 | * | |
316 | * Revision 1.36.4.11 1996/07/09 05:28:29 bentson | |
317 | * add code for -Z in set_line_char | |
318 | * | |
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. | |
322 | * | |
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; | |
331 | * | |
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 | |
335 | * | |
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 | |
339 | * | |
340 | * Revision 1.36.4.6 1996/06/20 23:17:19 bentson | |
341 | * rename vars and restructure some code | |
342 | * | |
343 | * Revision 1.36.4.5 1996/06/14 15:09:44 bentson | |
344 | * get right status back after boot load | |
345 | * | |
346 | * Revision 1.36.4.4 1996/06/13 19:51:44 bentson | |
347 | * successfully loads firmware | |
348 | * | |
349 | * Revision 1.36.4.3 1996/06/13 06:08:33 bentson | |
350 | * add more of the code for the boot/load ioctls | |
351 | * | |
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 | |
355 | * | |
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 | |
359 | * to be loaded) | |
360 | * | |
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> | |
364 | * | |
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; | |
369 | * | |
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). | |
375 | * | |
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. | |
381 | * | |
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. | |
389 | * | |
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. | |
394 | * | |
395 | * Revision 1.36.3.2 1995/09/08 22:07:14 bentson | |
396 | * remove printk from ISR; fix typo | |
397 | * | |
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. | |
402 | * | |
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. | |
407 | * | |
408 | * Revision 1.36.1.4 1995/03/29 06:14:14 bentson | |
409 | * disambiguate between Cyclom-16Y and Cyclom-32Ye; | |
410 | * | |
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>); | |
414 | * | |
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>); | |
418 | * | |
419 | * Revision 1.36.1.1 1995/03/13 15:44:43 bentson | |
420 | * initialize defaults for receive threshold and stale data timeout; | |
421 | * cosmetic changes; | |
422 | * | |
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>); | |
439 | * | |
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 | |
443 | * | |
444 | * Revision 1.34 1994/12/10 12:37:12 steffen | |
445 | * This is the corrected version as suggested by Marcio Saito | |
446 | * | |
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 | |
450 | * | |
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 | |
454 | * | |
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 | |
459 | * | |
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 | |
465 | * | |
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). | |
470 | * | |
471 | * Revision 1.28 1994/11/04 00:13:16 root | |
472 | * turn off diagnostic messages | |
473 | * | |
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) | |
477 | * | |
478 | * Revision 1.26 1994/11/03 22:40:36 root | |
479 | * automatic interrupt probing fixed. | |
480 | * | |
481 | * Revision 1.25 1994/11/03 20:17:02 root | |
482 | * start to implement auto-irq | |
483 | * | |
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 | |
487 | * | |
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; | |
491 | * | |
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 | |
495 | * | |
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 | |
499 | * | |
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; | |
505 | * | |
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; | |
509 | * | |
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 | |
515 | * (to my view); | |
516 | * | |
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; | |
522 | * | |
523 | * Revision 1.16 1994/10/30 01:14:33 bentson | |
524 | * change major numbers; add some _early_ return statements; | |
525 | * | |
526 | * Revision 1.15 1994/10/29 06:43:15 bentson | |
527 | * final tidying up for clean compile; enable some error reporting | |
528 | * | |
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 | |
532 | * compile cleanly. | |
533 | * | |
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 | |
540 | * stop operation) | |
541 | * | |
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 | |
546 | * | |
547 | * Revision 1.11 1994/06/11 21:53:10 bentson | |
548 | * get use of save_car right in transmit interrupt service | |
549 | * | |
550 | * Revision 1.10.1.1 1994/06/11 21:31:18 bentson | |
551 | * add some diagnostic printing; try to fix save_car stuff | |
552 | * | |
553 | * Revision 1.10 1994/06/11 20:36:08 bentson | |
554 | * clean up compiler warnings | |
555 | * | |
556 | * Revision 1.9 1994/06/11 19:42:46 bentson | |
557 | * added a bunch of code to support modem signalling | |
558 | * | |
559 | * Revision 1.8 1994/06/11 17:57:07 bentson | |
560 | * recognize break & parity error | |
561 | * | |
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 | |
569 | * hardware; | |
570 | * | |
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 | |
575 | * any obvious errors | |
576 | * | |
577 | * Revision 1.5 1994/05/30 00:55:02 bentson | |
578 | * transmit works without obvious errors | |
579 | * | |
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 | |
584 | * | |
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 | |
588 | * | |
589 | * Revision 1.2 1994/05/19 13:21:43 bentson | |
590 | * start to crib from other sources | |
591 | * | |
592 | */ | |
593 | ||
096dcfce JS |
594 | #define CY_VERSION "2.4" |
595 | ||
1da177e4 LT |
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. */ | |
599 | ||
02f1175c | 600 | #define NR_CARDS 4 |
1da177e4 LT |
601 | |
602 | /* | |
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. */ | |
606 | ||
02f1175c | 607 | #define NR_PORTS 256 |
1da177e4 LT |
608 | |
609 | #define ZE_V1_NPORTS 64 | |
610 | #define ZO_V1 0 | |
611 | #define ZO_V2 1 | |
612 | #define ZE_V1 2 | |
613 | ||
614 | #define SERIAL_PARANOIA_CHECK | |
615 | #undef CY_DEBUG_OPEN | |
616 | #undef CY_DEBUG_THROTTLE | |
617 | #undef CY_DEBUG_OTHER | |
618 | #undef CY_DEBUG_IO | |
619 | #undef CY_DEBUG_COUNT | |
620 | #undef CY_DEBUG_DTR | |
621 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
622 | #undef CY_DEBUG_INTERRUPTS | |
623 | #undef CY_16Y_HACK | |
624 | #undef CY_ENABLE_MONITORING | |
625 | #undef CY_PCI_DEBUG | |
626 | ||
1da177e4 LT |
627 | /* |
628 | * Include section | |
629 | */ | |
1da177e4 LT |
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> | |
33f0f88f | 637 | #include <linux/tty_flip.h> |
1da177e4 LT |
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> | |
650 | ||
651 | #include <asm/system.h> | |
652 | #include <asm/io.h> | |
653 | #include <asm/irq.h> | |
654 | #include <asm/uaccess.h> | |
655 | ||
1da177e4 LT |
656 | #include <linux/kernel.h> |
657 | #include <linux/pci.h> | |
658 | ||
659 | #include <linux/stat.h> | |
660 | #include <linux/proc_fs.h> | |
661 | ||
02f1175c JS |
662 | static void cy_throttle(struct tty_struct *tty); |
663 | static void cy_send_xchar(struct tty_struct *tty, char ch); | |
1da177e4 LT |
664 | |
665 | #define IS_CYC_Z(card) ((card).num_chips == -1) | |
666 | ||
667 | #define Z_FPGA_CHECK(card) \ | |
db05c3b1 | 668 | ((readl(&((struct RUNTIME_9060 __iomem *) \ |
02f1175c | 669 | ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) |
1da177e4 | 670 | |
db05c3b1 | 671 | #define ISZLOADED(card) (((ZO_V1==readl(&((struct RUNTIME_9060 __iomem *) \ |
1da177e4 LT |
672 | ((card).ctl_addr))->mail_box_0)) || \ |
673 | Z_FPGA_CHECK(card)) && \ | |
db05c3b1 | 674 | (ZFIRM_ID==readl(&((struct FIRM_ID __iomem *) \ |
1da177e4 LT |
675 | ((card).base_addr+ID_ADDRESS))->signature))) |
676 | ||
677 | #ifndef SERIAL_XMIT_SIZE | |
678 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
679 | #endif | |
680 | #define WAKEUP_CHARS 256 | |
681 | ||
682 | #define STD_COM_FLAGS (0) | |
683 | ||
1da177e4 LT |
684 | static struct tty_driver *cy_serial_driver; |
685 | ||
686 | #ifdef CONFIG_ISA | |
687 | /* This is the address lookup table. The driver will probe for | |
688 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
689 | driver to probe addresses at a different address, add it to | |
690 | this table. If the driver is probing some other board and | |
691 | causing problems, remove the offending address from this table. | |
692 | The cy_setup function extracts additional addresses from the | |
693 | boot options line. The form is "cyclades=address,address..." | |
694 | */ | |
695 | ||
696 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
697 | 0xD0000, |
698 | 0xD2000, | |
699 | 0xD4000, | |
700 | 0xD6000, | |
701 | 0xD8000, | |
702 | 0xDA000, | |
703 | 0xDC000, | |
704 | 0xDE000, | |
705 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 706 | }; |
02f1175c | 707 | |
fe971071 | 708 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 LT |
709 | |
710 | #ifdef MODULE | |
3046d50e JS |
711 | static long maddr[NR_CARDS]; |
712 | static int irq[NR_CARDS]; | |
1da177e4 LT |
713 | |
714 | module_param_array(maddr, long, NULL, 0); | |
715 | module_param_array(irq, int, NULL, 0); | |
716 | #endif | |
717 | ||
02f1175c | 718 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
719 | |
720 | /* This is the per-card data structure containing address, irq, number of | |
721 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
722 | */ | |
723 | static struct cyclades_card cy_card[NR_CARDS]; | |
724 | ||
725 | /* This is the per-channel data structure containing pointers, flags | |
726 | and variables for the port. This driver supports a maximum of NR_PORTS. | |
727 | */ | |
728 | static struct cyclades_port cy_port[NR_PORTS]; | |
729 | ||
02f1175c | 730 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 731 | |
1da177e4 LT |
732 | /* |
733 | * This is used to look up the divisor speeds and the timeouts | |
734 | * We're normally limited to 15 distinct baud rates. The extra | |
735 | * are accessed via settings in info->flags. | |
736 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, | |
737 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
738 | * HI VHI | |
739 | * 20 | |
740 | */ | |
741 | static int baud_table[] = { | |
02f1175c JS |
742 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
743 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
744 | 230400, 0 | |
745 | }; | |
746 | ||
747 | static char baud_co_25[] = { /* 25 MHz clock option table */ | |
748 | /* value => 00 01 02 03 04 */ | |
749 | /* divide by 8 32 128 512 2048 */ | |
750 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
751 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
752 | }; | |
753 | ||
754 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ | |
755 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, | |
756 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
757 | }; | |
758 | ||
759 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ | |
760 | /* value => 00 01 02 03 04 */ | |
761 | /* divide by 8 32 128 512 2048 */ | |
762 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
763 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
764 | 0x00 | |
765 | }; | |
766 | ||
767 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ | |
768 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, | |
769 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
770 | 0x21 | |
771 | }; | |
772 | ||
773 | static char baud_cor3[] = { /* receive threshold */ | |
774 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
775 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
776 | 0x07 | |
777 | }; | |
1da177e4 LT |
778 | |
779 | /* | |
780 | * The Cyclades driver implements HW flow control as any serial driver. | |
781 | * The cyclades_port structure member rflow and the vector rflow_thr | |
782 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
783 | * data loss even when the system interrupt latency is too high. These flags | |
784 | * are to be used only with very special applications. Setting these flags | |
785 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
786 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
787 | * cables. | |
788 | */ | |
789 | ||
02f1175c JS |
790 | static char rflow_thr[] = { /* rflow threshold */ |
791 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
792 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
793 | 0x0a | |
794 | }; | |
1da177e4 LT |
795 | |
796 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
797 | * address order. This look-up table overcomes that problem. | |
798 | */ | |
02f1175c JS |
799 | static int cy_chip_offset[] = { 0x0000, |
800 | 0x0400, | |
801 | 0x0800, | |
802 | 0x0C00, | |
803 | 0x0200, | |
804 | 0x0600, | |
805 | 0x0A00, | |
806 | 0x0E00 | |
807 | }; | |
1da177e4 LT |
808 | |
809 | /* PCI related definitions */ | |
810 | ||
1da177e4 | 811 | #ifdef CONFIG_PCI |
893de2df JS |
812 | static struct pci_device_id cy_pci_dev_id[] __devinitdata = { |
813 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, /* PCI < 1Mb */ | |
814 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, /* PCI > 1Mb */ | |
815 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, /* 4Y PCI < 1Mb */ | |
816 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, /* 4Y PCI > 1Mb */ | |
817 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, /* 8Y PCI < 1Mb */ | |
818 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, /* 8Y PCI > 1Mb */ | |
819 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, /* Z PCI < 1Mb */ | |
820 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, /* Z PCI > 1Mb */ | |
821 | { } /* end of table */ | |
02f1175c | 822 | }; |
893de2df | 823 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
824 | #endif |
825 | ||
826 | static void cy_start(struct tty_struct *); | |
827 | static void set_line_char(struct cyclades_port *); | |
1a86b5e3 | 828 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
829 | #ifdef CONFIG_ISA |
830 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 831 | #endif /* CONFIG_ISA */ |
1da177e4 | 832 | |
02f1175c | 833 | static int cyclades_get_proc_info(char *, char **, off_t, int, int *, void *); |
1da177e4 LT |
834 | |
835 | #ifndef CONFIG_CYZ_INTR | |
836 | static void cyz_poll(unsigned long); | |
837 | ||
838 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
839 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
840 | ||
8d06afab | 841 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 842 | |
02f1175c | 843 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
844 | static void cyz_rx_restart(unsigned long); |
845 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 846 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 847 | |
02f1175c JS |
848 | static inline int serial_paranoia_check(struct cyclades_port *info, |
849 | char *name, const char *routine) | |
1da177e4 LT |
850 | { |
851 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 852 | if (!info) { |
21719191 JS |
853 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
854 | "in %s\n", name, routine); | |
02f1175c JS |
855 | return 1; |
856 | } | |
857 | ||
858 | if ((long)info < (long)(&cy_port[0]) || | |
859 | (long)(&cy_port[NR_PORTS]) < (long)info) { | |
21719191 JS |
860 | printk(KERN_WARNING "cyc Warning: cyclades_port out of range " |
861 | "for (%s) in %s\n", name, routine); | |
02f1175c JS |
862 | return 1; |
863 | } | |
864 | ||
865 | if (info->magic != CYCLADES_MAGIC) { | |
21719191 JS |
866 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
867 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
868 | return 1; |
869 | } | |
1da177e4 | 870 | #endif |
02f1175c JS |
871 | return 0; |
872 | } /* serial_paranoia_check */ | |
1da177e4 LT |
873 | |
874 | /* | |
875 | * This routine is used by the interrupt handler to schedule | |
876 | * processing in the software interrupt portion of the driver | |
877 | * (also known as the "bottom half"). This can be called any | |
878 | * number of times for any channel without harm. | |
879 | */ | |
02f1175c | 880 | static inline void cy_sched_event(struct cyclades_port *info, int event) |
1da177e4 | 881 | { |
02f1175c JS |
882 | info->event |= 1 << event; /* remember what kind of event and who */ |
883 | schedule_work(&info->tqueue); | |
884 | } /* cy_sched_event */ | |
1da177e4 LT |
885 | |
886 | /* | |
887 | * This routine is used to handle the "bottom half" processing for the | |
888 | * serial driver, known also the "software interrupt" processing. | |
889 | * This processing is done at the kernel interrupt level, after the | |
890 | * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This | |
891 | * is where time-consuming activities which can not be done in the | |
892 | * interrupt driver proper are done; the interrupt driver schedules | |
893 | * them using cy_sched_event(), and they get done here. | |
894 | * | |
895 | * This is done through one level of indirection--the task queue. | |
896 | * When a hardware interrupt service routine wants service by the | |
897 | * driver's bottom half, it enqueues the appropriate tq_struct (one | |
898 | * per port) to the keventd work queue and sets a request flag | |
899 | * that the work queue be processed. | |
900 | * | |
901 | * Although this may seem unwieldy, it gives the system a way to | |
902 | * pass an argument (in this case the pointer to the cyclades_port | |
903 | * structure) to the bottom half of the driver. Previous kernels | |
904 | * had to poll every port to see if that port needed servicing. | |
905 | */ | |
906 | static void | |
c4028958 | 907 | do_softint(struct work_struct *work) |
1da177e4 | 908 | { |
c4028958 DH |
909 | struct cyclades_port *info = |
910 | container_of(work, struct cyclades_port, tqueue); | |
02f1175c JS |
911 | struct tty_struct *tty; |
912 | ||
913 | tty = info->tty; | |
914 | if (!tty) | |
915 | return; | |
916 | ||
917 | if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) { | |
918 | tty_hangup(info->tty); | |
919 | wake_up_interruptible(&info->open_wait); | |
920 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
921 | } | |
922 | if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) | |
923 | wake_up_interruptible(&info->open_wait); | |
1da177e4 | 924 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
925 | if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event) && |
926 | !timer_pending(&cyz_rx_full_timer[info->line])) | |
927 | mod_timer(&cyz_rx_full_timer[info->line], jiffies + 1); | |
1da177e4 | 928 | #endif |
02f1175c JS |
929 | if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) |
930 | wake_up_interruptible(&info->delta_msr_wait); | |
931 | tty_wakeup(tty); | |
1da177e4 | 932 | #ifdef Z_WAKE |
02f1175c | 933 | if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) |
2c7fea99 | 934 | complete(&info->shutdown_wait); |
1da177e4 LT |
935 | #endif |
936 | } /* do_softint */ | |
937 | ||
938 | ||
939 | /***********************************************************/ | |
940 | /********* Start of block of Cyclom-Y specific code ********/ | |
941 | ||
942 | /* This routine waits up to 1000 micro-seconds for the previous | |
943 | command to the Cirrus chip to complete and then issues the | |
944 | new command. An error is returned if the previous command | |
945 | didn't finish within the time limit. | |
946 | ||
947 | This function is only called from inside spinlock-protected code. | |
948 | */ | |
02f1175c | 949 | static int cyy_issue_cmd(void __iomem * base_addr, u_char cmd, int index) |
1da177e4 | 950 | { |
ad39c300 | 951 | unsigned int i; |
1da177e4 | 952 | |
02f1175c JS |
953 | /* Check to see that the previous command has completed */ |
954 | for (i = 0; i < 100; i++) { | |
db05c3b1 | 955 | if (readb(base_addr + (CyCCR << index)) == 0) { |
02f1175c JS |
956 | break; |
957 | } | |
958 | udelay(10L); | |
1da177e4 | 959 | } |
02f1175c JS |
960 | /* if the CCR never cleared, the previous command |
961 | didn't finish within the "reasonable time" */ | |
962 | if (i == 100) | |
096dcfce | 963 | return -1; |
1da177e4 | 964 | |
02f1175c JS |
965 | /* Issue the new command */ |
966 | cy_writeb(base_addr + (CyCCR << index), cmd); | |
1da177e4 | 967 | |
096dcfce | 968 | return 0; |
02f1175c | 969 | } /* cyy_issue_cmd */ |
1da177e4 LT |
970 | |
971 | #ifdef CONFIG_ISA | |
972 | /* ISA interrupt detection code */ | |
02f1175c | 973 | static unsigned detect_isa_irq(void __iomem * address) |
1da177e4 | 974 | { |
02f1175c JS |
975 | int irq; |
976 | unsigned long irqs, flags; | |
977 | int save_xir, save_car; | |
978 | int index = 0; /* IRQ probing is only for ISA */ | |
979 | ||
980 | /* forget possible initially masked and pending IRQ */ | |
981 | irq = probe_irq_off(probe_irq_on()); | |
982 | ||
983 | /* Clear interrupts on the board first */ | |
984 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
985 | /* Cy_ClrIntr is 0x1800 */ | |
986 | ||
987 | irqs = probe_irq_on(); | |
988 | /* Wait ... */ | |
989 | udelay(5000L); | |
990 | ||
991 | /* Enable the Tx interrupts on the CD1400 */ | |
992 | local_irq_save(flags); | |
993 | cy_writeb(address + (CyCAR << index), 0); | |
994 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); | |
995 | ||
996 | cy_writeb(address + (CyCAR << index), 0); | |
997 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 998 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
999 | local_irq_restore(flags); |
1000 | ||
1001 | /* Wait ... */ | |
1002 | udelay(5000L); | |
1003 | ||
1004 | /* Check which interrupt is in use */ | |
1005 | irq = probe_irq_off(irqs); | |
1006 | ||
1007 | /* Clean up */ | |
db05c3b1 JS |
1008 | save_xir = (u_char) readb(address + (CyTIR << index)); |
1009 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
1010 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
1011 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 1012 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
1013 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
1014 | cy_writeb(address + (CyCAR << index), (save_car)); | |
1015 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
1016 | /* Cy_ClrIntr is 0x1800 */ | |
1017 | ||
1018 | return (irq > 0) ? irq : 0; | |
1da177e4 | 1019 | } |
02f1175c | 1020 | #endif /* CONFIG_ISA */ |
1da177e4 | 1021 | |
e941027f | 1022 | static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, |
02f1175c | 1023 | void __iomem * base_addr, int status, int index) |
e941027f JS |
1024 | { |
1025 | struct cyclades_port *info; | |
1026 | struct tty_struct *tty; | |
ad39c300 | 1027 | int char_count; |
e941027f JS |
1028 | int i, j, len, mdm_change, mdm_status, outch; |
1029 | int save_xir, channel, save_car; | |
1030 | char data; | |
1031 | ||
02f1175c | 1032 | if (status & CySRReceive) { /* reception interrupt */ |
e941027f | 1033 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1034 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 1035 | #endif |
02f1175c JS |
1036 | /* determine the channel & change to that context */ |
1037 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1038 | save_xir = (u_char) readb(base_addr + (CyRIR << index)); |
02f1175c JS |
1039 | channel = (u_short) (save_xir & CyIRChannel); |
1040 | i = channel + chip * 4 + cinfo->first_line; | |
1041 | info = &cy_port[i]; | |
db05c3b1 | 1042 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1043 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1044 | ||
1045 | /* if there is nowhere to put the data, discard it */ | |
f7429034 | 1046 | if (info->tty == NULL) { |
db05c3b1 | 1047 | j = (readb(base_addr + (CyRIVR << index)) & |
02f1175c JS |
1048 | CyIVRMask); |
1049 | if (j == CyIVRRxEx) { /* exception */ | |
db05c3b1 | 1050 | data = readb(base_addr + (CyRDSR << index)); |
02f1175c | 1051 | } else { /* normal character reception */ |
db05c3b1 | 1052 | char_count = readb(base_addr + |
02f1175c JS |
1053 | (CyRDCR << index)); |
1054 | while (char_count--) { | |
db05c3b1 | 1055 | data = readb(base_addr + |
02f1175c | 1056 | (CyRDSR << index)); |
e941027f | 1057 | } |
e941027f | 1058 | } |
02f1175c JS |
1059 | } else { /* there is an open port for this data */ |
1060 | tty = info->tty; | |
db05c3b1 | 1061 | j = (readb(base_addr + (CyRIVR << index)) & |
02f1175c JS |
1062 | CyIVRMask); |
1063 | if (j == CyIVRRxEx) { /* exception */ | |
db05c3b1 | 1064 | data = readb(base_addr + (CyRDSR << index)); |
02f1175c JS |
1065 | |
1066 | /* For statistics only */ | |
1067 | if (data & CyBREAK) | |
1068 | info->icount.brk++; | |
1069 | else if (data & CyFRAME) | |
1070 | info->icount.frame++; | |
1071 | else if (data & CyPARITY) | |
1072 | info->icount.parity++; | |
1073 | else if (data & CyOVERRUN) | |
1074 | info->icount.overrun++; | |
1075 | ||
1076 | if (data & info->ignore_status_mask) { | |
1077 | info->icount.rx++; | |
1078 | return; | |
1079 | } | |
1080 | if (tty_buffer_request_room(tty, 1)) { | |
1081 | if (data & info->read_status_mask) { | |
1082 | if (data & CyBREAK) { | |
1083 | tty_insert_flip_char( | |
1084 | tty, | |
db05c3b1 | 1085 | readb( |
02f1175c JS |
1086 | base_addr + |
1087 | (CyRDSR << | |
1088 | index)), | |
1089 | TTY_BREAK); | |
1090 | info->icount.rx++; | |
1091 | if (info->flags & | |
1092 | ASYNC_SAK) { | |
1093 | do_SAK(tty); | |
1094 | } | |
1095 | } else if (data & CyFRAME) { | |
1096 | tty_insert_flip_char( | |
1097 | tty, | |
db05c3b1 | 1098 | readb( |
02f1175c JS |
1099 | base_addr + |
1100 | (CyRDSR << | |
1101 | index)), | |
1102 | TTY_FRAME); | |
1103 | info->icount.rx++; | |
1104 | info->idle_stats. | |
1105 | frame_errs++; | |
1106 | } else if (data & CyPARITY) { | |
1107 | /* Pieces of seven... */ | |
1108 | tty_insert_flip_char( | |
1109 | tty, | |
db05c3b1 | 1110 | readb( |
02f1175c JS |
1111 | base_addr + |
1112 | (CyRDSR << | |
1113 | index)), | |
1114 | TTY_PARITY); | |
1115 | info->icount.rx++; | |
1116 | info->idle_stats. | |
1117 | parity_errs++; | |
1118 | } else if (data & CyOVERRUN) { | |
1119 | tty_insert_flip_char( | |
1120 | tty, 0, | |
1121 | TTY_OVERRUN); | |
1122 | info->icount.rx++; | |
1123 | /* If the flip buffer itself is | |
1124 | overflowing, we still lose | |
1125 | the next incoming character. | |
1126 | */ | |
1127 | tty_insert_flip_char( | |
1128 | tty, | |
db05c3b1 | 1129 | readb( |
02f1175c JS |
1130 | base_addr + |
1131 | (CyRDSR << | |
1132 | index)), | |
1133 | TTY_FRAME); | |
1134 | info->icount.rx++; | |
1135 | info->idle_stats. | |
1136 | overruns++; | |
1137 | /* These two conditions may imply */ | |
1138 | /* a normal read should be done. */ | |
1139 | /* }else if(data & CyTIMEOUT){ */ | |
1140 | /* }else if(data & CySPECHAR){ */ | |
1141 | } else { | |
1142 | tty_insert_flip_char( | |
1143 | tty, 0, | |
1144 | TTY_NORMAL); | |
1145 | info->icount.rx++; | |
1146 | } | |
1147 | } else { | |
1148 | tty_insert_flip_char(tty, 0, | |
1149 | TTY_NORMAL); | |
1150 | info->icount.rx++; | |
1151 | } | |
1152 | } else { | |
1153 | /* there was a software buffer | |
1154 | overrun and nothing could be | |
1155 | done about it!!! */ | |
1156 | info->icount.buf_overrun++; | |
1157 | info->idle_stats.overruns++; | |
1158 | } | |
1159 | } else { /* normal character reception */ | |
1160 | /* load # chars available from the chip */ | |
db05c3b1 | 1161 | char_count = readb(base_addr + |
02f1175c | 1162 | (CyRDCR << index)); |
e941027f JS |
1163 | |
1164 | #ifdef CY_ENABLE_MONITORING | |
02f1175c JS |
1165 | ++info->mon.int_count; |
1166 | info->mon.char_count += char_count; | |
1167 | if (char_count > info->mon.char_max) | |
1168 | info->mon.char_max = char_count; | |
1169 | info->mon.char_last = char_count; | |
e941027f | 1170 | #endif |
02f1175c JS |
1171 | len = tty_buffer_request_room(tty, char_count); |
1172 | while (len--) { | |
db05c3b1 | 1173 | data = readb(base_addr + |
02f1175c JS |
1174 | (CyRDSR << index)); |
1175 | tty_insert_flip_char(tty, data, | |
1176 | TTY_NORMAL); | |
1177 | info->idle_stats.recv_bytes++; | |
1178 | info->icount.rx++; | |
e941027f | 1179 | #ifdef CY_16Y_HACK |
02f1175c | 1180 | udelay(10L); |
e941027f | 1181 | #endif |
02f1175c JS |
1182 | } |
1183 | info->idle_stats.recv_idle = jiffies; | |
1184 | } | |
1185 | tty_schedule_flip(tty); | |
e941027f | 1186 | } |
02f1175c JS |
1187 | /* end of service */ |
1188 | cy_writeb(base_addr + (CyRIR << index), (save_xir & 0x3f)); | |
1189 | cy_writeb(base_addr + (CyCAR << index), (save_car)); | |
1190 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1191 | } |
1192 | ||
02f1175c JS |
1193 | if (status & CySRTransmit) { /* transmission interrupt */ |
1194 | /* Since we only get here when the transmit buffer | |
1195 | is empty, we know we can always stuff a dozen | |
1196 | characters. */ | |
e941027f | 1197 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1198 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
1199 | #endif |
1200 | ||
02f1175c JS |
1201 | /* determine the channel & change to that context */ |
1202 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1203 | save_xir = (u_char) readb(base_addr + (CyTIR << index)); |
02f1175c JS |
1204 | channel = (u_short) (save_xir & CyIRChannel); |
1205 | i = channel + chip * 4 + cinfo->first_line; | |
db05c3b1 | 1206 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1207 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1208 | ||
1209 | /* validate the port# (as configured and open) */ | |
1210 | if ((i < 0) || (NR_PORTS <= i)) { | |
1211 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1212 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1213 | ~CyTxRdy); |
1214 | goto txend; | |
e941027f | 1215 | } |
02f1175c | 1216 | info = &cy_port[i]; |
f7429034 | 1217 | if (info->tty == NULL) { |
02f1175c | 1218 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1219 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1220 | ~CyTxRdy); |
1221 | goto txdone; | |
e941027f | 1222 | } |
02f1175c JS |
1223 | |
1224 | /* load the on-chip space for outbound data */ | |
1225 | char_count = info->xmit_fifo_size; | |
1226 | ||
1227 | if (info->x_char) { /* send special char */ | |
1228 | outch = info->x_char; | |
1229 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1230 | char_count--; | |
1231 | info->icount.tx++; | |
1232 | info->x_char = 0; | |
e941027f | 1233 | } |
02f1175c JS |
1234 | |
1235 | if (info->breakon || info->breakoff) { | |
1236 | if (info->breakon) { | |
1237 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1238 | cy_writeb(base_addr + (CyTDR << index), 0x81); | |
1239 | info->breakon = 0; | |
1240 | char_count -= 2; | |
1241 | } | |
1242 | if (info->breakoff) { | |
1243 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1244 | cy_writeb(base_addr + (CyTDR << index), 0x83); | |
1245 | info->breakoff = 0; | |
1246 | char_count -= 2; | |
1247 | } | |
e941027f | 1248 | } |
02f1175c JS |
1249 | |
1250 | while (char_count-- > 0) { | |
1251 | if (!info->xmit_cnt) { | |
db05c3b1 | 1252 | if (readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1253 | CyTxMpty) { |
1254 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1255 | readb(base_addr + |
02f1175c JS |
1256 | (CySRER << index)) & |
1257 | ~CyTxMpty); | |
1258 | } else { | |
1259 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1260 | (readb(base_addr + |
02f1175c JS |
1261 | (CySRER << index)) & |
1262 | ~CyTxRdy) | CyTxMpty); | |
1263 | } | |
1264 | goto txdone; | |
1265 | } | |
f7429034 | 1266 | if (info->xmit_buf == NULL) { |
02f1175c | 1267 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1268 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1269 | ~CyTxRdy); |
1270 | goto txdone; | |
1271 | } | |
1272 | if (info->tty->stopped || info->tty->hw_stopped) { | |
1273 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1274 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1275 | ~CyTxRdy); |
1276 | goto txdone; | |
1277 | } | |
1278 | /* Because the Embedded Transmit Commands have | |
1279 | been enabled, we must check to see if the | |
1280 | escape character, NULL, is being sent. If it | |
1281 | is, we must ensure that there is room for it | |
1282 | to be doubled in the output stream. Therefore | |
1283 | we no longer advance the pointer when the | |
1284 | character is fetched, but rather wait until | |
1285 | after the check for a NULL output character. | |
1286 | This is necessary because there may not be | |
1287 | room for the two chars needed to send a NULL.) | |
1288 | */ | |
1289 | outch = info->xmit_buf[info->xmit_tail]; | |
1290 | if (outch) { | |
1291 | info->xmit_cnt--; | |
1292 | info->xmit_tail = (info->xmit_tail + 1) & | |
1293 | (SERIAL_XMIT_SIZE - 1); | |
1294 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1295 | info->icount.tx++; | |
1296 | } else { | |
1297 | if (char_count > 1) { | |
1298 | info->xmit_cnt--; | |
1299 | info->xmit_tail = (info->xmit_tail + 1)& | |
1300 | (SERIAL_XMIT_SIZE - 1); | |
1301 | cy_writeb(base_addr + (CyTDR << index), | |
1302 | outch); | |
1303 | cy_writeb(base_addr + (CyTDR << index), | |
1304 | 0); | |
1305 | info->icount.tx++; | |
1306 | char_count--; | |
02f1175c JS |
1307 | } |
1308 | } | |
e941027f | 1309 | } |
e941027f JS |
1310 | |
1311 | txdone: | |
02f1175c JS |
1312 | if (info->xmit_cnt < WAKEUP_CHARS) { |
1313 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1314 | } | |
e941027f | 1315 | txend: |
02f1175c JS |
1316 | /* end of service */ |
1317 | cy_writeb(base_addr + (CyTIR << index), (save_xir & 0x3f)); | |
1318 | cy_writeb(base_addr + (CyCAR << index), (save_car)); | |
1319 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1320 | } |
1321 | ||
02f1175c | 1322 | if (status & CySRModem) { /* modem interrupt */ |
e941027f | 1323 | |
02f1175c JS |
1324 | /* determine the channel & change to that context */ |
1325 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1326 | save_xir = (u_char) readb(base_addr + (CyMIR << index)); |
02f1175c JS |
1327 | channel = (u_short) (save_xir & CyIRChannel); |
1328 | info = &cy_port[channel + chip * 4 + cinfo->first_line]; | |
db05c3b1 | 1329 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1330 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1331 | ||
db05c3b1 JS |
1332 | mdm_change = readb(base_addr + (CyMISR << index)); |
1333 | mdm_status = readb(base_addr + (CyMSVR1 << index)); | |
02f1175c | 1334 | |
f7429034 | 1335 | if (info->tty) { |
02f1175c JS |
1336 | if (mdm_change & CyANY_DELTA) { |
1337 | /* For statistics only */ | |
1338 | if (mdm_change & CyDCD) | |
1339 | info->icount.dcd++; | |
1340 | if (mdm_change & CyCTS) | |
1341 | info->icount.cts++; | |
1342 | if (mdm_change & CyDSR) | |
1343 | info->icount.dsr++; | |
1344 | if (mdm_change & CyRI) | |
1345 | info->icount.rng++; | |
1346 | ||
1347 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
e941027f | 1348 | } |
02f1175c JS |
1349 | |
1350 | if ((mdm_change & CyDCD) && | |
1351 | (info->flags & ASYNC_CHECK_CD)) { | |
1352 | if (mdm_status & CyDCD) { | |
1353 | cy_sched_event(info, | |
1354 | Cy_EVENT_OPEN_WAKEUP); | |
1355 | } else { | |
1356 | cy_sched_event(info, Cy_EVENT_HANGUP); | |
1357 | } | |
1358 | } | |
1359 | if ((mdm_change & CyCTS) && | |
1360 | (info->flags & ASYNC_CTS_FLOW)) { | |
1361 | if (info->tty->hw_stopped) { | |
1362 | if (mdm_status & CyCTS) { | |
1363 | /* cy_start isn't used | |
1364 | because... !!! */ | |
1365 | info->tty->hw_stopped = 0; | |
1366 | cy_writeb(base_addr + | |
1367 | (CySRER << index), | |
db05c3b1 | 1368 | readb(base_addr + |
02f1175c JS |
1369 | (CySRER << |
1370 | index))| | |
1371 | CyTxRdy); | |
1372 | cy_sched_event(info, | |
1373 | Cy_EVENT_WRITE_WAKEUP); | |
1374 | } | |
1375 | } else { | |
1376 | if (!(mdm_status & CyCTS)) { | |
1377 | /* cy_stop isn't used | |
1378 | because ... !!! */ | |
1379 | info->tty->hw_stopped = 1; | |
1380 | cy_writeb(base_addr + | |
1381 | (CySRER << index), | |
db05c3b1 | 1382 | readb(base_addr + |
02f1175c JS |
1383 | (CySRER << |
1384 | index)) & | |
1385 | ~CyTxRdy); | |
1386 | } | |
1387 | } | |
1388 | } | |
f7429034 | 1389 | /* if (mdm_change & CyDSR) { |
02f1175c JS |
1390 | } |
1391 | if (mdm_change & CyRI) { | |
f7429034 | 1392 | }*/ |
e941027f | 1393 | } |
02f1175c JS |
1394 | /* end of service */ |
1395 | cy_writeb(base_addr + (CyMIR << index), (save_xir & 0x3f)); | |
1396 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
1397 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1398 | } |
1399 | } | |
1400 | ||
1da177e4 LT |
1401 | /* The real interrupt service routine is called |
1402 | whenever the card wants its hand held--chars | |
1403 | received, out buffer empty, modem change, etc. | |
1404 | */ | |
02f1175c | 1405 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 1406 | { |
02f1175c | 1407 | int status; |
f7429034 | 1408 | struct cyclades_card *cinfo = dev_id; |
02f1175c JS |
1409 | void __iomem *base_addr, *card_base_addr; |
1410 | int chip; | |
1411 | int index; | |
1412 | int too_many; | |
1413 | int had_work; | |
1414 | ||
f7429034 | 1415 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 1416 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1417 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",irq); |
1da177e4 | 1418 | #endif |
02f1175c JS |
1419 | return IRQ_NONE; /* spurious interrupt */ |
1420 | } | |
1421 | ||
1422 | card_base_addr = cinfo->base_addr; | |
1423 | index = cinfo->bus_index; | |
1424 | ||
f1e83c6c JS |
1425 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
1426 | if (unlikely(card_base_addr == NULL)) | |
1427 | return IRQ_HANDLED; | |
1428 | ||
02f1175c JS |
1429 | /* This loop checks all chips in the card. Make a note whenever |
1430 | _any_ chip had some work to do, as this is considered an | |
1431 | indication that there will be more to do. Only when no chip | |
1432 | has any work does this outermost loop exit. | |
1433 | */ | |
1434 | do { | |
1435 | had_work = 0; | |
1436 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
1437 | base_addr = cinfo->base_addr + | |
1438 | (cy_chip_offset[chip] << index); | |
1439 | too_many = 0; | |
db05c3b1 | 1440 | while ((status = readb(base_addr + |
02f1175c JS |
1441 | (CySVRR << index))) != 0x00) { |
1442 | had_work++; | |
1443 | /* The purpose of the following test is to ensure that | |
1444 | no chip can monopolize the driver. This forces the | |
1445 | chips to be checked in a round-robin fashion (after | |
1446 | draining each of a bunch (1000) of characters). | |
1447 | */ | |
1448 | if (1000 < too_many++) { | |
1449 | break; | |
1450 | } | |
1451 | cyy_intr_chip(cinfo, chip, base_addr, status, | |
1452 | index); | |
1453 | } | |
1454 | } | |
1455 | } while (had_work); | |
1456 | ||
1457 | /* clear interrupts */ | |
1458 | spin_lock(&cinfo->card_lock); | |
1459 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
1460 | /* Cy_ClrIntr is 0x1800 */ | |
1461 | spin_unlock(&cinfo->card_lock); | |
1462 | return IRQ_HANDLED; | |
1463 | } /* cyy_interrupt */ | |
1da177e4 LT |
1464 | |
1465 | /***********************************************************/ | |
1466 | /********* End of block of Cyclom-Y specific code **********/ | |
1467 | /******** Start of block of Cyclades-Z specific code *********/ | |
1468 | /***********************************************************/ | |
1469 | ||
1470 | static int | |
02f1175c | 1471 | cyz_fetch_msg(struct cyclades_card *cinfo, |
1a86b5e3 | 1472 | __u32 * channel, __u8 * cmd, __u32 * param) |
1da177e4 | 1473 | { |
02f1175c JS |
1474 | struct FIRM_ID __iomem *firm_id; |
1475 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1476 | struct BOARD_CTRL __iomem *board_ctrl; | |
1477 | unsigned long loc_doorbell; | |
1478 | ||
1479 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1480 | if (!ISZLOADED(*cinfo)) { | |
096dcfce | 1481 | return -1; |
02f1175c | 1482 | } |
db05c3b1 | 1483 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1484 | board_ctrl = &zfw_ctrl->board_ctrl; |
1485 | ||
db05c3b1 | 1486 | loc_doorbell = readl(&((struct RUNTIME_9060 __iomem *) |
02f1175c JS |
1487 | (cinfo->ctl_addr))->loc_doorbell); |
1488 | if (loc_doorbell) { | |
1489 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
1490 | *channel = readl(&board_ctrl->fwcmd_channel); |
1491 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
02f1175c JS |
1492 | cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> |
1493 | loc_doorbell, 0xffffffff); | |
1494 | return 1; | |
1495 | } | |
1496 | return 0; | |
1497 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
1498 | |
1499 | static int | |
02f1175c | 1500 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 1501 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 1502 | { |
02f1175c JS |
1503 | struct FIRM_ID __iomem *firm_id; |
1504 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1505 | struct BOARD_CTRL __iomem *board_ctrl; | |
1a86b5e3 | 1506 | __u32 __iomem *pci_doorbell; |
02f1175c JS |
1507 | int index; |
1508 | ||
1509 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1510 | if (!ISZLOADED(*cinfo)) { | |
096dcfce | 1511 | return -1; |
02f1175c | 1512 | } |
db05c3b1 | 1513 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1514 | board_ctrl = &zfw_ctrl->board_ctrl; |
1515 | ||
1516 | index = 0; | |
1517 | pci_doorbell = | |
1518 | &((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->pci_doorbell; | |
db05c3b1 | 1519 | while ((readl(pci_doorbell) & 0xff) != 0) { |
02f1175c | 1520 | if (index++ == 1000) { |
db05c3b1 | 1521 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
1522 | } |
1523 | udelay(50L); | |
1524 | } | |
1525 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
1526 | cy_writel(&board_ctrl->hcmd_param, param); | |
1527 | cy_writel(pci_doorbell, (long)cmd); | |
1528 | ||
096dcfce | 1529 | return 0; |
02f1175c | 1530 | } /* cyz_issue_cmd */ |
1da177e4 LT |
1531 | |
1532 | static void | |
ad39c300 JS |
1533 | cyz_handle_rx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
1534 | struct BUF_CTRL __iomem *buf_ctrl) | |
1da177e4 | 1535 | { |
875b206b | 1536 | struct cyclades_card *cinfo = info->card; |
02f1175c | 1537 | struct tty_struct *tty = info->tty; |
ad39c300 | 1538 | int char_count; |
02f1175c | 1539 | int len; |
1da177e4 | 1540 | #ifdef BLOCKMOVE |
ce71b0ff | 1541 | unsigned char *buf; |
1da177e4 | 1542 | #else |
02f1175c | 1543 | char data; |
1da177e4 | 1544 | #endif |
ad39c300 | 1545 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 1546 | |
db05c3b1 JS |
1547 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
1548 | rx_put = readl(&buf_ctrl->rx_put); | |
1549 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
1550 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
1551 | if (rx_put >= rx_get) |
1552 | char_count = rx_put - rx_get; | |
1553 | else | |
1554 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 1555 | |
02f1175c | 1556 | if (char_count) { |
1da177e4 | 1557 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
1558 | info->mon.int_count++; |
1559 | info->mon.char_count += char_count; | |
1560 | if (char_count > info->mon.char_max) | |
1561 | info->mon.char_max = char_count; | |
1562 | info->mon.char_last = char_count; | |
1da177e4 | 1563 | #endif |
f7429034 | 1564 | if (tty == NULL) { |
02f1175c JS |
1565 | /* flush received characters */ |
1566 | new_rx_get = (new_rx_get + char_count) & | |
1567 | (rx_bufsize - 1); | |
1568 | info->rflush_count++; | |
1569 | } else { | |
1da177e4 | 1570 | #ifdef BLOCKMOVE |
02f1175c JS |
1571 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
1572 | for performance, but because of buffer boundaries, there | |
1573 | may be several steps to the operation */ | |
ce71b0ff JS |
1574 | while (1) { |
1575 | len = tty_prepare_flip_string(tty, &buf, | |
1576 | char_count); | |
1577 | if (!len) | |
1578 | break; | |
1579 | ||
1580 | len = min_t(unsigned int, min(len, char_count), | |
1581 | rx_bufsize - new_rx_get); | |
1582 | ||
1583 | memcpy_fromio(buf, cinfo->base_addr + | |
1584 | rx_bufaddr + new_rx_get, len); | |
1585 | ||
1586 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 1587 | (rx_bufsize - 1); |
ce71b0ff JS |
1588 | char_count -= len; |
1589 | info->icount.rx += len; | |
1590 | info->idle_stats.recv_bytes += len; | |
02f1175c | 1591 | } |
1da177e4 | 1592 | #else |
02f1175c JS |
1593 | len = tty_buffer_request_room(tty, char_count); |
1594 | while (len--) { | |
db05c3b1 | 1595 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c JS |
1596 | new_rx_get); |
1597 | new_rx_get = (new_rx_get + 1)& (rx_bufsize - 1); | |
1598 | tty_insert_flip_char(tty, data, TTY_NORMAL); | |
1599 | info->idle_stats.recv_bytes++; | |
1600 | info->icount.rx++; | |
1601 | } | |
1da177e4 LT |
1602 | #endif |
1603 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1604 | /* Recalculate the number of chars in the RX buffer and issue |
1605 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1606 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1607 | if (rx_put >= rx_get) |
1608 | char_count = rx_put - rx_get; | |
1609 | else | |
1610 | char_count = rx_put - rx_get + rx_bufsize; | |
db05c3b1 | 1611 | if (char_count >= (int)readl(&buf_ctrl->rx_threshold)) { |
02f1175c JS |
1612 | cy_sched_event(info, Cy_EVENT_Z_RX_FULL); |
1613 | } | |
1da177e4 | 1614 | #endif |
02f1175c JS |
1615 | info->idle_stats.recv_idle = jiffies; |
1616 | tty_schedule_flip(tty); | |
1617 | } | |
1618 | /* Update rx_get */ | |
1619 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1620 | } |
1da177e4 LT |
1621 | } |
1622 | ||
1623 | static void | |
ad39c300 JS |
1624 | cyz_handle_tx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
1625 | struct BUF_CTRL __iomem *buf_ctrl) | |
1da177e4 | 1626 | { |
875b206b | 1627 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1628 | struct tty_struct *tty = info->tty; |
1629 | char data; | |
ad39c300 | 1630 | int char_count; |
1da177e4 | 1631 | #ifdef BLOCKMOVE |
02f1175c | 1632 | int small_count; |
1da177e4 | 1633 | #endif |
ad39c300 | 1634 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1635 | |
02f1175c JS |
1636 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1637 | return; | |
1da177e4 | 1638 | |
db05c3b1 JS |
1639 | tx_get = readl(&buf_ctrl->tx_get); |
1640 | tx_put = readl(&buf_ctrl->tx_put); | |
1641 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1642 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1643 | if (tx_put >= tx_get) |
1644 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1645 | else | |
1646 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1647 | |
02f1175c | 1648 | if (char_count) { |
1da177e4 | 1649 | |
f7429034 | 1650 | if (tty == NULL) |
02f1175c | 1651 | goto ztxdone; |
1da177e4 | 1652 | |
02f1175c JS |
1653 | if (info->x_char) { /* send special char */ |
1654 | data = info->x_char; | |
1da177e4 | 1655 | |
02f1175c JS |
1656 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1657 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1658 | info->x_char = 0; | |
1659 | char_count--; | |
1660 | info->icount.tx++; | |
02f1175c | 1661 | } |
1da177e4 | 1662 | #ifdef BLOCKMOVE |
02f1175c JS |
1663 | while (0 < (small_count = min_t(unsigned int, |
1664 | tx_bufsize - tx_put, min_t(unsigned int, | |
1665 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1666 | min_t(unsigned int, info->xmit_cnt, | |
1667 | char_count))))) { | |
1668 | ||
1669 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1670 | tx_put), | |
1671 | &info->xmit_buf[info->xmit_tail], | |
1672 | small_count); | |
1673 | ||
1674 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1675 | char_count -= small_count; | |
1676 | info->icount.tx += small_count; | |
1677 | info->xmit_cnt -= small_count; | |
1678 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1679 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1680 | } |
1da177e4 | 1681 | #else |
02f1175c JS |
1682 | while (info->xmit_cnt && char_count) { |
1683 | data = info->xmit_buf[info->xmit_tail]; | |
1684 | info->xmit_cnt--; | |
1685 | info->xmit_tail = (info->xmit_tail + 1) & | |
1686 | (SERIAL_XMIT_SIZE - 1); | |
1687 | ||
1688 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1689 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1690 | char_count--; | |
1691 | info->icount.tx++; | |
02f1175c | 1692 | } |
1da177e4 | 1693 | #endif |
02f1175c JS |
1694 | ztxdone: |
1695 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
1696 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1697 | } | |
1698 | /* Update tx_put */ | |
1699 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1700 | } |
1da177e4 LT |
1701 | } |
1702 | ||
02f1175c | 1703 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1704 | { |
02f1175c JS |
1705 | struct tty_struct *tty; |
1706 | struct cyclades_port *info; | |
ad39c300 JS |
1707 | static struct FIRM_ID __iomem *firm_id; |
1708 | static struct ZFW_CTRL __iomem *zfw_ctrl; | |
1709 | static struct BOARD_CTRL __iomem *board_ctrl; | |
1710 | static struct CH_CTRL __iomem *ch_ctrl; | |
1711 | static struct BUF_CTRL __iomem *buf_ctrl; | |
1a86b5e3 KK |
1712 | __u32 channel; |
1713 | __u8 cmd; | |
1714 | __u32 param; | |
1715 | __u32 hw_ver, fw_ver; | |
02f1175c JS |
1716 | int special_count; |
1717 | int delta_count; | |
1718 | ||
1719 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
db05c3b1 | 1720 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 1721 | board_ctrl = &zfw_ctrl->board_ctrl; |
db05c3b1 JS |
1722 | fw_ver = readl(&board_ctrl->fw_version); |
1723 | hw_ver = readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> | |
02f1175c JS |
1724 | mail_box_0); |
1725 | ||
1726 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1727 | special_count = 0; | |
1728 | delta_count = 0; | |
1729 | info = &cy_port[channel + cinfo->first_line]; | |
f7429034 | 1730 | if ((tty = info->tty) == NULL) |
02f1175c | 1731 | continue; |
f7429034 | 1732 | |
02f1175c JS |
1733 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
1734 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
1735 | ||
1736 | switch (cmd) { | |
1737 | case C_CM_PR_ERROR: | |
1738 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1739 | info->icount.rx++; | |
1740 | special_count++; | |
1741 | break; | |
1742 | case C_CM_FR_ERROR: | |
1743 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1744 | info->icount.rx++; | |
1745 | special_count++; | |
1746 | break; | |
1747 | case C_CM_RXBRK: | |
1748 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1749 | info->icount.rx++; | |
1750 | special_count++; | |
1751 | break; | |
1752 | case C_CM_MDCD: | |
1753 | info->icount.dcd++; | |
1754 | delta_count++; | |
1755 | if (info->flags & ASYNC_CHECK_CD) { | |
1756 | if ((fw_ver > 241 ? ((u_long) param) : | |
db05c3b1 | 1757 | readl(&ch_ctrl->rs_status)) & |
02f1175c JS |
1758 | C_RS_DCD) { |
1759 | cy_sched_event(info, | |
1760 | Cy_EVENT_OPEN_WAKEUP); | |
1761 | } else { | |
1762 | cy_sched_event(info, Cy_EVENT_HANGUP); | |
1763 | } | |
1764 | } | |
1765 | break; | |
1766 | case C_CM_MCTS: | |
1767 | info->icount.cts++; | |
1768 | delta_count++; | |
1769 | break; | |
1770 | case C_CM_MRI: | |
1771 | info->icount.rng++; | |
1772 | delta_count++; | |
1773 | break; | |
1774 | case C_CM_MDSR: | |
1775 | info->icount.dsr++; | |
1776 | delta_count++; | |
1777 | break; | |
1da177e4 | 1778 | #ifdef Z_WAKE |
02f1175c JS |
1779 | case C_CM_IOCTLW: |
1780 | cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP); | |
1781 | break; | |
1da177e4 LT |
1782 | #endif |
1783 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1784 | case C_CM_RXHIWM: |
1785 | case C_CM_RXNNDT: | |
1786 | case C_CM_INTBACK2: | |
1787 | /* Reception Interrupt */ | |
1da177e4 | 1788 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1789 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1790 | "port %ld\n", info->card, channel); | |
1da177e4 | 1791 | #endif |
02f1175c JS |
1792 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); |
1793 | break; | |
1794 | case C_CM_TXBEMPTY: | |
1795 | case C_CM_TXLOWWM: | |
1796 | case C_CM_INTBACK: | |
1797 | /* Transmission Interrupt */ | |
1da177e4 | 1798 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1799 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1800 | "port %ld\n", info->card, channel); | |
1da177e4 | 1801 | #endif |
02f1175c JS |
1802 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); |
1803 | break; | |
1804 | #endif /* CONFIG_CYZ_INTR */ | |
1805 | case C_CM_FATAL: | |
1806 | /* should do something with this !!! */ | |
1807 | break; | |
1808 | default: | |
1809 | break; | |
1810 | } | |
1811 | if (delta_count) | |
1812 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
1813 | if (special_count) | |
1814 | tty_schedule_flip(tty); | |
1da177e4 | 1815 | } |
1da177e4 LT |
1816 | } |
1817 | ||
1818 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1819 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1820 | { |
f7429034 | 1821 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1822 | |
f7429034 | 1823 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 1824 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1825 | printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n",irq); |
1da177e4 | 1826 | #endif |
02f1175c JS |
1827 | return IRQ_NONE; /* spurious interrupt */ |
1828 | } | |
1da177e4 | 1829 | |
f7429034 | 1830 | if (unlikely(!ISZLOADED(*cinfo))) { |
1da177e4 | 1831 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1832 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1833 | "(IRQ%d).\n", irq); | |
1da177e4 | 1834 | #endif |
02f1175c JS |
1835 | return IRQ_NONE; |
1836 | } | |
1da177e4 | 1837 | |
02f1175c JS |
1838 | /* Handle the interrupts */ |
1839 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1840 | |
02f1175c JS |
1841 | return IRQ_HANDLED; |
1842 | } /* cyz_interrupt */ | |
1da177e4 | 1843 | |
02f1175c | 1844 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1845 | { |
02f1175c | 1846 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1847 | struct cyclades_card *card = info->card; |
02f1175c | 1848 | int retval; |
875b206b | 1849 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1850 | unsigned long flags; |
1851 | ||
9fa1b3b1 | 1852 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1853 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1854 | if (retval != 0) { |
21719191 | 1855 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1856 | info->line, retval); |
1857 | } | |
9fa1b3b1 | 1858 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1859 | } |
1860 | ||
02f1175c | 1861 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1862 | |
02f1175c | 1863 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1864 | { |
02f1175c JS |
1865 | struct cyclades_card *cinfo; |
1866 | struct cyclades_port *info; | |
1867 | struct tty_struct *tty; | |
ad39c300 JS |
1868 | static struct FIRM_ID *firm_id; |
1869 | static struct ZFW_CTRL *zfw_ctrl; | |
1870 | static struct BOARD_CTRL *board_ctrl; | |
1871 | static struct CH_CTRL *ch_ctrl; | |
1872 | static struct BUF_CTRL *buf_ctrl; | |
b7050906 | 1873 | unsigned long expires = jiffies + HZ; |
02f1175c | 1874 | int card, port; |
1da177e4 | 1875 | |
02f1175c JS |
1876 | for (card = 0; card < NR_CARDS; card++) { |
1877 | cinfo = &cy_card[card]; | |
1878 | ||
1879 | if (!IS_CYC_Z(*cinfo)) | |
1880 | continue; | |
1881 | if (!ISZLOADED(*cinfo)) | |
1882 | continue; | |
1883 | ||
1884 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1885 | zfw_ctrl = cinfo->base_addr + | |
db05c3b1 | 1886 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 1887 | board_ctrl = &(zfw_ctrl->board_ctrl); |
1da177e4 LT |
1888 | |
1889 | /* Skip first polling cycle to avoid racing conditions with the FW */ | |
02f1175c | 1890 | if (!cinfo->intr_enabled) { |
db05c3b1 | 1891 | cinfo->nports = (int)readl(&board_ctrl->n_channel); |
02f1175c JS |
1892 | cinfo->intr_enabled = 1; |
1893 | continue; | |
1894 | } | |
1da177e4 | 1895 | |
02f1175c | 1896 | cyz_handle_cmd(cinfo); |
1da177e4 | 1897 | |
02f1175c JS |
1898 | for (port = 0; port < cinfo->nports; port++) { |
1899 | info = &cy_port[port + cinfo->first_line]; | |
1900 | tty = info->tty; | |
1901 | ch_ctrl = &(zfw_ctrl->ch_ctrl[port]); | |
1902 | buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); | |
1da177e4 | 1903 | |
02f1175c JS |
1904 | if (!info->throttle) |
1905 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); | |
1906 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); | |
1907 | } | |
1908 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1909 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1910 | } |
b7050906 | 1911 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1912 | } /* cyz_poll */ |
1da177e4 | 1913 | |
02f1175c | 1914 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1915 | |
1916 | /********** End of block of Cyclades-Z specific code *********/ | |
1917 | /***********************************************************/ | |
1918 | ||
1da177e4 LT |
1919 | /* This is called whenever a port becomes active; |
1920 | interrupts are enabled and DTR & RTS are turned on. | |
1921 | */ | |
02f1175c | 1922 | static int startup(struct cyclades_port *info) |
1da177e4 | 1923 | { |
875b206b | 1924 | struct cyclades_card *card; |
02f1175c JS |
1925 | unsigned long flags; |
1926 | int retval = 0; | |
1927 | void __iomem *base_addr; | |
875b206b | 1928 | int chip, channel, index; |
02f1175c | 1929 | unsigned long page; |
1da177e4 | 1930 | |
02f1175c | 1931 | card = info->card; |
875b206b | 1932 | channel = info->line - card->first_line; |
1da177e4 | 1933 | |
02f1175c JS |
1934 | page = get_zeroed_page(GFP_KERNEL); |
1935 | if (!page) | |
1936 | return -ENOMEM; | |
1da177e4 | 1937 | |
9fa1b3b1 | 1938 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1939 | |
02f1175c JS |
1940 | if (info->flags & ASYNC_INITIALIZED) { |
1941 | free_page(page); | |
1942 | goto errout; | |
1943 | } | |
1da177e4 | 1944 | |
02f1175c JS |
1945 | if (!info->type) { |
1946 | if (info->tty) { | |
1947 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
1948 | } | |
1949 | free_page(page); | |
1950 | goto errout; | |
1951 | } | |
1da177e4 | 1952 | |
02f1175c JS |
1953 | if (info->xmit_buf) |
1954 | free_page(page); | |
1955 | else | |
1956 | info->xmit_buf = (unsigned char *)page; | |
1da177e4 | 1957 | |
9fa1b3b1 | 1958 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1959 | |
02f1175c | 1960 | set_line_char(info); |
1da177e4 | 1961 | |
875b206b | 1962 | if (!IS_CYC_Z(*card)) { |
02f1175c JS |
1963 | chip = channel >> 2; |
1964 | channel &= 0x03; | |
875b206b JS |
1965 | index = card->bus_index; |
1966 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
1967 | |
1968 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
1969 | printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " |
1970 | "base_addr %p\n", | |
1971 | card, chip, channel, base_addr); | |
1da177e4 | 1972 | #endif |
9fa1b3b1 | 1973 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1974 | |
02f1175c | 1975 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1da177e4 | 1976 | |
02f1175c JS |
1977 | cy_writeb(base_addr + (CyRTPR << index), |
1978 | (info->default_timeout ? info->default_timeout : 0x02)); | |
1979 | /* 10ms rx timeout */ | |
1da177e4 | 1980 | |
02f1175c JS |
1981 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
1982 | index); | |
1da177e4 | 1983 | |
02f1175c JS |
1984 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1985 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); | |
1986 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); | |
1da177e4 LT |
1987 | |
1988 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
1989 | printk(KERN_DEBUG "cyc:startup raising DTR\n"); |
1990 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
1991 | readb(base_addr + (CyMSVR1 << index)), |
1992 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 LT |
1993 | #endif |
1994 | ||
02f1175c | 1995 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1996 | readb(base_addr + (CySRER << index)) | CyRxData); |
02f1175c | 1997 | info->flags |= ASYNC_INITIALIZED; |
1da177e4 | 1998 | |
02f1175c JS |
1999 | if (info->tty) { |
2000 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2001 | } | |
2002 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2003 | info->breakon = info->breakoff = 0; | |
2004 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2005 | info->idle_stats.in_use = | |
2006 | info->idle_stats.recv_idle = | |
2007 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 2008 | |
9fa1b3b1 | 2009 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2010 | |
02f1175c JS |
2011 | } else { |
2012 | struct FIRM_ID __iomem *firm_id; | |
2013 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2014 | struct BOARD_CTRL __iomem *board_ctrl; | |
2015 | struct CH_CTRL __iomem *ch_ctrl; | |
2016 | int retval; | |
1da177e4 | 2017 | |
875b206b | 2018 | base_addr = card->base_addr; |
1da177e4 | 2019 | |
02f1175c | 2020 | firm_id = base_addr + ID_ADDRESS; |
875b206b | 2021 | if (!ISZLOADED(*card)) { |
02f1175c JS |
2022 | return -ENODEV; |
2023 | } | |
1da177e4 | 2024 | |
875b206b | 2025 | zfw_ctrl = card->base_addr + |
db05c3b1 | 2026 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2027 | board_ctrl = &zfw_ctrl->board_ctrl; |
2028 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 LT |
2029 | |
2030 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
2031 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
2032 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 | 2033 | #endif |
9fa1b3b1 | 2034 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 2035 | |
02f1175c | 2036 | cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); |
1da177e4 LT |
2037 | #ifdef Z_WAKE |
2038 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
2039 | cy_writel(&ch_ctrl[channel].intr_enable, |
2040 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
2041 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 2042 | #else |
02f1175c JS |
2043 | cy_writel(&ch_ctrl[channel].intr_enable, |
2044 | C_IN_IOCTLW | C_IN_MDCD); | |
2045 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
2046 | #else |
2047 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
2048 | cy_writel(&ch_ctrl[channel].intr_enable, |
2049 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
2050 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 2051 | #else |
02f1175c JS |
2052 | cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD); |
2053 | #endif /* CONFIG_CYZ_INTR */ | |
2054 | #endif /* Z_WAKE */ | |
2055 | ||
875b206b | 2056 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2057 | if (retval != 0) { |
21719191 JS |
2058 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
2059 | "%x\n", info->line, retval); | |
02f1175c | 2060 | } |
1da177e4 | 2061 | |
02f1175c | 2062 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 2063 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 2064 | if (retval != 0) { |
21719191 JS |
2065 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
2066 | "%x\n", info->line, retval); | |
02f1175c | 2067 | } |
1da177e4 | 2068 | |
02f1175c JS |
2069 | /* set timeout !!! */ |
2070 | /* set RTS and DTR !!! */ | |
2071 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 | 2072 | readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | |
02f1175c | 2073 | C_RS_DTR); |
9fa1b3b1 | 2074 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2075 | if (retval != 0) { |
21719191 JS |
2076 | printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was " |
2077 | "%x\n", info->line, retval); | |
02f1175c | 2078 | } |
1da177e4 | 2079 | #ifdef CY_DEBUG_DTR |
21719191 | 2080 | printk(KERN_DEBUG "cyc:startup raising Z DTR\n"); |
1da177e4 LT |
2081 | #endif |
2082 | ||
02f1175c JS |
2083 | /* enable send, recv, modem !!! */ |
2084 | ||
2085 | info->flags |= ASYNC_INITIALIZED; | |
2086 | if (info->tty) { | |
2087 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2088 | } | |
2089 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2090 | info->breakon = info->breakoff = 0; | |
2091 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2092 | info->idle_stats.in_use = | |
2093 | info->idle_stats.recv_idle = | |
2094 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 2095 | |
9fa1b3b1 | 2096 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2097 | } |
1da177e4 LT |
2098 | |
2099 | #ifdef CY_DEBUG_OPEN | |
21719191 | 2100 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
2101 | #endif |
2102 | return 0; | |
2103 | ||
2104 | errout: | |
9fa1b3b1 | 2105 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2106 | return retval; |
02f1175c | 2107 | } /* startup */ |
1da177e4 | 2108 | |
02f1175c | 2109 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 2110 | { |
875b206b | 2111 | struct cyclades_card *card; |
02f1175c JS |
2112 | unsigned long flags; |
2113 | void __iomem *base_addr; | |
875b206b | 2114 | int chip, channel, index; |
1da177e4 | 2115 | |
02f1175c | 2116 | card = info->card; |
875b206b JS |
2117 | channel = info->line - card->first_line; |
2118 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2119 | chip = channel >> 2; |
2120 | channel &= 0x03; | |
875b206b JS |
2121 | index = card->bus_index; |
2122 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 2123 | |
9fa1b3b1 | 2124 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2125 | cy_writeb(base_addr + (CyCAR << index), channel); |
2126 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2127 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 2128 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2129 | } else { |
1da177e4 | 2130 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 2131 | int retval; |
1da177e4 | 2132 | |
9fa1b3b1 | 2133 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 2134 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 2135 | if (retval != 0) { |
21719191 JS |
2136 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
2137 | "%x\n", info->line, retval); | |
02f1175c | 2138 | } |
9fa1b3b1 | 2139 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2140 | #else /* CONFIG_CYZ_INTR */ |
2141 | /* Don't have to do anything at this time */ | |
2142 | #endif /* CONFIG_CYZ_INTR */ | |
2143 | } | |
2144 | } /* start_xmit */ | |
1da177e4 LT |
2145 | |
2146 | /* | |
2147 | * This routine shuts down a serial port; interrupts are disabled, | |
2148 | * and DTR is dropped if the hangup on close termio flag is on. | |
2149 | */ | |
02f1175c | 2150 | static void shutdown(struct cyclades_port *info) |
1da177e4 | 2151 | { |
875b206b | 2152 | struct cyclades_card *card; |
02f1175c JS |
2153 | unsigned long flags; |
2154 | void __iomem *base_addr; | |
875b206b | 2155 | int chip, channel, index; |
02f1175c JS |
2156 | |
2157 | if (!(info->flags & ASYNC_INITIALIZED)) { | |
2158 | return; | |
2159 | } | |
2160 | ||
2161 | card = info->card; | |
875b206b JS |
2162 | channel = info->line - card->first_line; |
2163 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2164 | chip = channel >> 2; |
2165 | channel &= 0x03; | |
875b206b JS |
2166 | index = card->bus_index; |
2167 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
2168 | |
2169 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
2170 | printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " |
2171 | "channel %d, base_addr %p\n", | |
2172 | card, chip, channel, base_addr); | |
1da177e4 LT |
2173 | #endif |
2174 | ||
9fa1b3b1 | 2175 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2176 | |
2177 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
2178 | wake_up_interruptible(&info->delta_msr_wait); | |
1da177e4 | 2179 | |
02f1175c JS |
2180 | if (info->xmit_buf) { |
2181 | unsigned char *temp; | |
2182 | temp = info->xmit_buf; | |
2183 | info->xmit_buf = NULL; | |
2184 | free_page((unsigned long)temp); | |
2185 | } | |
2186 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
2187 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2188 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); | |
2189 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); | |
1da177e4 | 2190 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2191 | printk(KERN_DEBUG "cyc shutdown dropping DTR\n"); |
2192 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2193 | readb(base_addr + (CyMSVR1 << index)), |
2194 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2195 | #endif |
02f1175c JS |
2196 | } |
2197 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); | |
2198 | /* it may be appropriate to clear _XMIT at | |
2199 | some later date (after testing)!!! */ | |
2200 | ||
2201 | if (info->tty) { | |
2202 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2203 | } | |
2204 | info->flags &= ~ASYNC_INITIALIZED; | |
9fa1b3b1 | 2205 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2206 | } else { |
2207 | struct FIRM_ID __iomem *firm_id; | |
2208 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2209 | struct BOARD_CTRL __iomem *board_ctrl; | |
2210 | struct CH_CTRL __iomem *ch_ctrl; | |
2211 | int retval; | |
2212 | ||
875b206b | 2213 | base_addr = card->base_addr; |
1da177e4 | 2214 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2215 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
2216 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 LT |
2217 | #endif |
2218 | ||
02f1175c | 2219 | firm_id = base_addr + ID_ADDRESS; |
875b206b | 2220 | if (!ISZLOADED(*card)) { |
02f1175c JS |
2221 | return; |
2222 | } | |
1da177e4 | 2223 | |
875b206b | 2224 | zfw_ctrl = card->base_addr + |
db05c3b1 | 2225 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2226 | board_ctrl = &zfw_ctrl->board_ctrl; |
2227 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 | 2228 | |
9fa1b3b1 | 2229 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 2230 | |
02f1175c JS |
2231 | if (info->xmit_buf) { |
2232 | unsigned char *temp; | |
2233 | temp = info->xmit_buf; | |
2234 | info->xmit_buf = NULL; | |
2235 | free_page((unsigned long)temp); | |
1da177e4 | 2236 | } |
02f1175c JS |
2237 | |
2238 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2239 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 | 2240 | (__u32)(readl(&ch_ctrl[channel].rs_control) & |
02f1175c | 2241 | ~(C_RS_RTS | C_RS_DTR))); |
875b206b | 2242 | retval = cyz_issue_cmd(info->card, channel, |
02f1175c JS |
2243 | C_CM_IOCTLM, 0L); |
2244 | if (retval != 0) { | |
21719191 JS |
2245 | printk(KERN_ERR"cyc:shutdown retval on ttyC%d " |
2246 | "was %x\n", info->line, retval); | |
02f1175c | 2247 | } |
1da177e4 | 2248 | #ifdef CY_DEBUG_DTR |
21719191 | 2249 | printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n"); |
1da177e4 | 2250 | #endif |
02f1175c | 2251 | } |
1da177e4 | 2252 | |
02f1175c JS |
2253 | if (info->tty) { |
2254 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2255 | } | |
2256 | info->flags &= ~ASYNC_INITIALIZED; | |
2257 | ||
9fa1b3b1 | 2258 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2259 | } |
1da177e4 LT |
2260 | |
2261 | #ifdef CY_DEBUG_OPEN | |
21719191 | 2262 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 2263 | #endif |
02f1175c | 2264 | } /* shutdown */ |
1da177e4 LT |
2265 | |
2266 | /* | |
2267 | * ------------------------------------------------------------ | |
2268 | * cy_open() and friends | |
2269 | * ------------------------------------------------------------ | |
2270 | */ | |
2271 | ||
2272 | static int | |
02f1175c JS |
2273 | block_til_ready(struct tty_struct *tty, struct file *filp, |
2274 | struct cyclades_port *info) | |
1da177e4 | 2275 | { |
02f1175c JS |
2276 | DECLARE_WAITQUEUE(wait, current); |
2277 | struct cyclades_card *cinfo; | |
2278 | unsigned long flags; | |
2279 | int chip, channel, index; | |
2280 | int retval; | |
2281 | void __iomem *base_addr; | |
2282 | ||
875b206b | 2283 | cinfo = info->card; |
02f1175c JS |
2284 | channel = info->line - cinfo->first_line; |
2285 | ||
2286 | /* | |
2287 | * If the device is in the middle of being closed, then block | |
2288 | * until it's done, and then try again. | |
2289 | */ | |
2290 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2c7fea99 JS |
2291 | wait_event_interruptible(info->close_wait, |
2292 | !(info->flags & ASYNC_CLOSING)); | |
096dcfce | 2293 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
1da177e4 | 2294 | } |
02f1175c JS |
2295 | |
2296 | /* | |
2297 | * If non-blocking mode is set, then make the check up front | |
2298 | * and then exit. | |
2299 | */ | |
2300 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { | |
2301 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2302 | return 0; | |
2303 | } | |
2304 | ||
2305 | /* | |
2306 | * Block waiting for the carrier detect and the line to become | |
2307 | * free (i.e., not in use by the callout). While we are in | |
2308 | * this loop, info->count is dropped by one, so that | |
2309 | * cy_close() knows when to free things. We restore it upon | |
2310 | * exit, either normal or abnormal. | |
2311 | */ | |
2312 | retval = 0; | |
2313 | add_wait_queue(&info->open_wait, &wait); | |
1da177e4 | 2314 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2315 | printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, " |
2316 | "count = %d\n", info->line, info->count); | |
1da177e4 | 2317 | #endif |
9fa1b3b1 | 2318 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2319 | if (!tty_hung_up_p(filp)) |
2320 | info->count--; | |
9fa1b3b1 | 2321 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2322 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
2323 | printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to " |
2324 | "%d\n", current->pid, info->count); | |
1da177e4 | 2325 | #endif |
02f1175c JS |
2326 | info->blocked_open++; |
2327 | ||
2328 | if (!IS_CYC_Z(*cinfo)) { | |
2329 | chip = channel >> 2; | |
2330 | channel &= 0x03; | |
2331 | index = cinfo->bus_index; | |
2332 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); | |
2333 | ||
2334 | while (1) { | |
9fa1b3b1 | 2335 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2336 | if ((tty->termios->c_cflag & CBAUD)) { |
2337 | cy_writeb(base_addr + (CyCAR << index), | |
2338 | (u_char) channel); | |
2339 | cy_writeb(base_addr + (CyMSVR1 << index), | |
2340 | CyRTS); | |
2341 | cy_writeb(base_addr + (CyMSVR2 << index), | |
2342 | CyDTR); | |
1da177e4 | 2343 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2344 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2345 | "DTR\n"); | |
2346 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2347 | readb(base_addr + (CyMSVR1 << index)), |
2348 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2349 | #endif |
02f1175c | 2350 | } |
9fa1b3b1 | 2351 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2352 | |
02f1175c JS |
2353 | set_current_state(TASK_INTERRUPTIBLE); |
2354 | if (tty_hung_up_p(filp) || | |
2355 | !(info->flags & ASYNC_INITIALIZED)) { | |
2356 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2357 | -EAGAIN : -ERESTARTSYS); | |
2358 | break; | |
2359 | } | |
1da177e4 | 2360 | |
9fa1b3b1 | 2361 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2362 | cy_writeb(base_addr + (CyCAR << index), |
2363 | (u_char) channel); | |
2364 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || | |
db05c3b1 | 2365 | (readb(base_addr + |
02f1175c | 2366 | (CyMSVR1 << index)) & CyDCD))) { |
9fa1b3b1 | 2367 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c JS |
2368 | break; |
2369 | } | |
9fa1b3b1 | 2370 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2371 | |
02f1175c JS |
2372 | if (signal_pending(current)) { |
2373 | retval = -ERESTARTSYS; | |
2374 | break; | |
2375 | } | |
1da177e4 | 2376 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2377 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2378 | "ttyC%d, count = %d\n", | |
2379 | info->line, info->count); | |
1da177e4 | 2380 | #endif |
02f1175c | 2381 | schedule(); |
1da177e4 | 2382 | } |
02f1175c JS |
2383 | } else { |
2384 | struct FIRM_ID __iomem *firm_id; | |
2385 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2386 | struct BOARD_CTRL __iomem *board_ctrl; | |
2387 | struct CH_CTRL __iomem *ch_ctrl; | |
2388 | int retval; | |
2389 | ||
2390 | base_addr = cinfo->base_addr; | |
2391 | firm_id = base_addr + ID_ADDRESS; | |
2392 | if (!ISZLOADED(*cinfo)) { | |
cc0a8fbb | 2393 | __set_current_state(TASK_RUNNING); |
02f1175c JS |
2394 | remove_wait_queue(&info->open_wait, &wait); |
2395 | return -EINVAL; | |
2396 | } | |
2397 | ||
db05c3b1 | 2398 | zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr)& 0xfffff); |
02f1175c JS |
2399 | board_ctrl = &zfw_ctrl->board_ctrl; |
2400 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
2401 | ||
2402 | while (1) { | |
2403 | if ((tty->termios->c_cflag & CBAUD)) { | |
2404 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 JS |
2405 | readl(&ch_ctrl[channel].rs_control) | |
2406 | C_RS_RTS | C_RS_DTR); | |
9fa1b3b1 | 2407 | retval = cyz_issue_cmd(cinfo, |
db05c3b1 | 2408 | channel, C_CM_IOCTLM, 0L); |
02f1175c | 2409 | if (retval != 0) { |
21719191 JS |
2410 | printk(KERN_ERR "cyc:block_til_ready " |
2411 | "retval on ttyC%d was %x\n", | |
02f1175c JS |
2412 | info->line, retval); |
2413 | } | |
1da177e4 | 2414 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2415 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2416 | "Z DTR\n"); | |
1da177e4 | 2417 | #endif |
02f1175c | 2418 | } |
1da177e4 | 2419 | |
02f1175c JS |
2420 | set_current_state(TASK_INTERRUPTIBLE); |
2421 | if (tty_hung_up_p(filp) || | |
2422 | !(info->flags & ASYNC_INITIALIZED)) { | |
2423 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2424 | -EAGAIN : -ERESTARTSYS); | |
2425 | break; | |
2426 | } | |
2427 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || | |
db05c3b1 | 2428 | (readl(&ch_ctrl[channel].rs_status) & |
02f1175c JS |
2429 | C_RS_DCD))) { |
2430 | break; | |
2431 | } | |
2432 | if (signal_pending(current)) { | |
2433 | retval = -ERESTARTSYS; | |
2434 | break; | |
2435 | } | |
1da177e4 | 2436 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2437 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2438 | "ttyC%d, count = %d\n", | |
2439 | info->line, info->count); | |
1da177e4 | 2440 | #endif |
02f1175c JS |
2441 | schedule(); |
2442 | } | |
1da177e4 | 2443 | } |
cc0a8fbb | 2444 | __set_current_state(TASK_RUNNING); |
02f1175c JS |
2445 | remove_wait_queue(&info->open_wait, &wait); |
2446 | if (!tty_hung_up_p(filp)) { | |
2447 | info->count++; | |
1da177e4 | 2448 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
2449 | printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing " |
2450 | "count to %d\n", current->pid, info->count); | |
1da177e4 | 2451 | #endif |
02f1175c JS |
2452 | } |
2453 | info->blocked_open--; | |
1da177e4 | 2454 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2455 | printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, " |
2456 | "count = %d\n", info->line, info->count); | |
1da177e4 | 2457 | #endif |
02f1175c JS |
2458 | if (retval) |
2459 | return retval; | |
2460 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2461 | return 0; | |
2462 | } /* block_til_ready */ | |
1da177e4 LT |
2463 | |
2464 | /* | |
2465 | * This routine is called whenever a serial port is opened. It | |
2466 | * performs the serial-specific initialization for the tty structure. | |
2467 | */ | |
02f1175c | 2468 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2469 | { |
02f1175c JS |
2470 | struct cyclades_port *info; |
2471 | int retval, line; | |
1da177e4 | 2472 | |
02f1175c JS |
2473 | line = tty->index; |
2474 | if ((line < 0) || (NR_PORTS <= line)) { | |
2475 | return -ENODEV; | |
2476 | } | |
2477 | info = &cy_port[line]; | |
2478 | if (info->line < 0) { | |
2479 | return -ENODEV; | |
2480 | } | |
1da177e4 | 2481 | |
02f1175c JS |
2482 | /* If the card's firmware hasn't been loaded, |
2483 | treat it as absent from the system. This | |
2484 | will make the user pay attention. | |
2485 | */ | |
875b206b JS |
2486 | if (IS_CYC_Z(*info->card)) { |
2487 | struct cyclades_card *cinfo = info->card; | |
02f1175c JS |
2488 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
2489 | ||
2490 | if (!ISZLOADED(*cinfo)) { | |
db05c3b1 | 2491 | if (((ZE_V1 == readl(&((struct RUNTIME_9060 __iomem *) |
02f1175c JS |
2492 | (cinfo->ctl_addr))->mail_box_0)) && |
2493 | Z_FPGA_CHECK(*cinfo)) && | |
db05c3b1 | 2494 | (ZFIRM_HLT == readl( |
02f1175c | 2495 | &firm_id->signature))) { |
21719191 JS |
2496 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
2497 | "need an external power supply for " | |
2498 | "this number of ports.\nFirmware " | |
2499 | "halted.\n"); | |
02f1175c | 2500 | } else { |
21719191 JS |
2501 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
2502 | "yet loaded\n"); | |
02f1175c JS |
2503 | } |
2504 | return -ENODEV; | |
2505 | } | |
2506 | #ifdef CONFIG_CYZ_INTR | |
2507 | else { | |
2508 | /* In case this Z board is operating in interrupt mode, its | |
2509 | interrupts should be enabled as soon as the first open | |
2510 | happens to one of its ports. */ | |
2511 | if (!cinfo->intr_enabled) { | |
2512 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2513 | struct BOARD_CTRL __iomem *board_ctrl; | |
2514 | ||
2515 | zfw_ctrl = cinfo->base_addr + | |
db05c3b1 JS |
2516 | (readl(&firm_id->zfwctrl_addr) & |
2517 | 0xfffff); | |
02f1175c JS |
2518 | |
2519 | board_ctrl = &zfw_ctrl->board_ctrl; | |
2520 | ||
2521 | /* Enable interrupts on the PLX chip */ | |
2522 | cy_writew(cinfo->ctl_addr + 0x68, | |
db05c3b1 | 2523 | readw(cinfo->ctl_addr + 0x68) | 0x0900); |
02f1175c JS |
2524 | /* Enable interrupts on the FW */ |
2525 | retval = cyz_issue_cmd(cinfo, 0, | |
2526 | C_CM_IRQ_ENBL, 0L); | |
2527 | if (retval != 0) { | |
21719191 JS |
2528 | printk(KERN_ERR "cyc:IRQ enable retval " |
2529 | "was %x\n", retval); | |
02f1175c JS |
2530 | } |
2531 | cinfo->nports = | |
db05c3b1 | 2532 | (int)readl(&board_ctrl->n_channel); |
02f1175c JS |
2533 | cinfo->intr_enabled = 1; |
2534 | } | |
1da177e4 | 2535 | } |
02f1175c JS |
2536 | #endif /* CONFIG_CYZ_INTR */ |
2537 | /* Make sure this Z port really exists in hardware */ | |
2538 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
2539 | return -ENODEV; | |
1da177e4 | 2540 | } |
1da177e4 | 2541 | #ifdef CY_DEBUG_OTHER |
21719191 | 2542 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 2543 | #endif |
02f1175c JS |
2544 | tty->driver_data = info; |
2545 | info->tty = tty; | |
2546 | if (serial_paranoia_check(info, tty->name, "cy_open")) { | |
2547 | return -ENODEV; | |
2548 | } | |
1da177e4 | 2549 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2550 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
2551 | info->count); | |
1da177e4 | 2552 | #endif |
02f1175c | 2553 | info->count++; |
1da177e4 | 2554 | #ifdef CY_DEBUG_COUNT |
21719191 | 2555 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
02f1175c | 2556 | current->pid, info->count); |
1da177e4 | 2557 | #endif |
1da177e4 | 2558 | |
02f1175c JS |
2559 | /* |
2560 | * If the port is the middle of closing, bail out now | |
2561 | */ | |
2562 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2c7fea99 JS |
2563 | wait_event_interruptible(info->close_wait, |
2564 | !(info->flags & ASYNC_CLOSING)); | |
096dcfce | 2565 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
02f1175c | 2566 | } |
1da177e4 | 2567 | |
02f1175c JS |
2568 | /* |
2569 | * Start up serial port | |
2570 | */ | |
2571 | retval = startup(info); | |
2572 | if (retval) { | |
2573 | return retval; | |
2574 | } | |
1da177e4 | 2575 | |
02f1175c JS |
2576 | retval = block_til_ready(tty, filp, info); |
2577 | if (retval) { | |
1da177e4 | 2578 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2579 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
2580 | "with %d\n", retval); | |
1da177e4 | 2581 | #endif |
02f1175c JS |
2582 | return retval; |
2583 | } | |
1da177e4 | 2584 | |
02f1175c | 2585 | info->throttle = 0; |
1da177e4 | 2586 | |
02f1175c | 2587 | #ifdef CY_DEBUG_OPEN |
21719191 | 2588 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
2589 | #endif |
2590 | return 0; | |
2591 | } /* cy_open */ | |
1da177e4 LT |
2592 | |
2593 | /* | |
2594 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
2595 | */ | |
02f1175c | 2596 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 2597 | { |
875b206b | 2598 | struct cyclades_card *card; |
cab9bdd1 | 2599 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2600 | void __iomem *base_addr; |
875b206b | 2601 | int chip, channel, index; |
02f1175c JS |
2602 | unsigned long orig_jiffies; |
2603 | int char_time; | |
2604 | ||
2605 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
2606 | return; | |
2607 | ||
2608 | if (info->xmit_fifo_size == 0) | |
2609 | return; /* Just in case.... */ | |
1da177e4 | 2610 | |
02f1175c JS |
2611 | orig_jiffies = jiffies; |
2612 | /* | |
2613 | * Set the check interval to be 1/5 of the estimated time to | |
2614 | * send a single character, and make it at least 1. The check | |
2615 | * interval should also be less than the timeout. | |
2616 | * | |
2617 | * Note: we have to use pretty tight timings here to satisfy | |
2618 | * the NIST-PCTS. | |
2619 | */ | |
2620 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
2621 | char_time = char_time / 5; | |
2622 | if (char_time <= 0) | |
2623 | char_time = 1; | |
2624 | if (timeout < 0) | |
2625 | timeout = 0; | |
2626 | if (timeout) | |
2627 | char_time = min(char_time, timeout); | |
2628 | /* | |
2629 | * If the transmitter hasn't cleared in twice the approximate | |
2630 | * amount of time to send the entire FIFO, it probably won't | |
2631 | * ever clear. This assumes the UART isn't doing flow | |
2632 | * control, which is currently the case. Hence, if it ever | |
2633 | * takes longer than info->timeout, this is probably due to a | |
2634 | * UART bug of some kind. So, we clamp the timeout parameter at | |
2635 | * 2*info->timeout. | |
2636 | */ | |
2637 | if (!timeout || timeout > 2 * info->timeout) | |
2638 | timeout = 2 * info->timeout; | |
1da177e4 | 2639 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
2640 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
2641 | timeout, char_time, jiffies); | |
1da177e4 | 2642 | #endif |
02f1175c | 2643 | card = info->card; |
875b206b JS |
2644 | channel = (info->line) - (card->first_line); |
2645 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2646 | chip = channel >> 2; |
2647 | channel &= 0x03; | |
875b206b JS |
2648 | index = card->bus_index; |
2649 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
db05c3b1 | 2650 | while (readb(base_addr + (CySRER << index)) & CyTxRdy) { |
1da177e4 | 2651 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2652 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 2653 | #endif |
02f1175c JS |
2654 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
2655 | break; | |
2656 | if (timeout && time_after(jiffies, orig_jiffies + | |
2657 | timeout)) | |
2658 | break; | |
2659 | } | |
1da177e4 | 2660 | } |
02f1175c JS |
2661 | /* Run one more char cycle */ |
2662 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 | 2663 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2664 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
2665 | #endif |
2666 | } | |
2667 | ||
2668 | /* | |
2669 | * This routine is called when a particular tty device is closed. | |
2670 | */ | |
02f1175c | 2671 | static void cy_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2672 | { |
cab9bdd1 | 2673 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2674 | struct cyclades_card *card; |
02f1175c | 2675 | unsigned long flags; |
1da177e4 LT |
2676 | |
2677 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2678 | printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); |
1da177e4 LT |
2679 | #endif |
2680 | ||
02f1175c JS |
2681 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { |
2682 | return; | |
2683 | } | |
1da177e4 | 2684 | |
9fa1b3b1 JS |
2685 | card = info->card; |
2686 | ||
2687 | spin_lock_irqsave(&card->card_lock, flags); | |
02f1175c JS |
2688 | /* If the TTY is being hung up, nothing to do */ |
2689 | if (tty_hung_up_p(filp)) { | |
9fa1b3b1 | 2690 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2691 | return; |
2692 | } | |
1da177e4 | 2693 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2694 | printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line, |
2695 | info->count); | |
1da177e4 | 2696 | #endif |
02f1175c JS |
2697 | if ((tty->count == 1) && (info->count != 1)) { |
2698 | /* | |
2699 | * Uh, oh. tty->count is 1, which means that the tty | |
2700 | * structure will be freed. Info->count should always | |
2701 | * be one in these conditions. If it's greater than | |
2702 | * one, we've got real problems, since it means the | |
2703 | * serial port won't be shutdown. | |
2704 | */ | |
21719191 JS |
2705 | printk(KERN_ERR "cyc:cy_close: bad serial port count; " |
2706 | "tty->count is 1, info->count is %d\n", info->count); | |
02f1175c JS |
2707 | info->count = 1; |
2708 | } | |
1da177e4 | 2709 | #ifdef CY_DEBUG_COUNT |
21719191 | 2710 | printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n", |
02f1175c | 2711 | current->pid, info->count - 1); |
1da177e4 | 2712 | #endif |
02f1175c | 2713 | if (--info->count < 0) { |
1da177e4 | 2714 | #ifdef CY_DEBUG_COUNT |
21719191 | 2715 | printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n"); |
1da177e4 | 2716 | #endif |
02f1175c | 2717 | info->count = 0; |
1da177e4 | 2718 | } |
02f1175c | 2719 | if (info->count) { |
9fa1b3b1 | 2720 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2721 | return; |
2722 | } | |
2723 | info->flags |= ASYNC_CLOSING; | |
1da177e4 | 2724 | |
02f1175c JS |
2725 | /* |
2726 | * Now we wait for the transmit buffer to clear; and we notify | |
2727 | * the line discipline to only process XON/XOFF characters. | |
2728 | */ | |
2729 | tty->closing = 1; | |
9fa1b3b1 | 2730 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2731 | if (info->closing_wait != CY_CLOSING_WAIT_NONE) { |
2732 | tty_wait_until_sent(tty, info->closing_wait); | |
1da177e4 | 2733 | } |
9fa1b3b1 | 2734 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2735 | |
9fa1b3b1 JS |
2736 | if (!IS_CYC_Z(*card)) { |
2737 | int channel = info->line - card->first_line; | |
2738 | int index = card->bus_index; | |
2739 | void __iomem *base_addr = card->base_addr + | |
02f1175c JS |
2740 | (cy_chip_offset[channel >> 2] << index); |
2741 | /* Stop accepting input */ | |
2742 | channel &= 0x03; | |
2743 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
2744 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2745 | readb(base_addr + (CySRER << index)) & ~CyRxData); |
02f1175c JS |
2746 | if (info->flags & ASYNC_INITIALIZED) { |
2747 | /* Waiting for on-board buffers to be empty before closing | |
2748 | the port */ | |
9fa1b3b1 | 2749 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2750 | cy_wait_until_sent(tty, info->timeout); |
9fa1b3b1 | 2751 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2752 | } |
2753 | } else { | |
2754 | #ifdef Z_WAKE | |
2755 | /* Waiting for on-board buffers to be empty before closing the port */ | |
9fa1b3b1 | 2756 | void __iomem *base_addr = card->base_addr; |
02f1175c JS |
2757 | struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; |
2758 | struct ZFW_CTRL __iomem *zfw_ctrl = | |
db05c3b1 | 2759 | base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 2760 | struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; |
9fa1b3b1 | 2761 | int channel = info->line - card->first_line; |
02f1175c JS |
2762 | int retval; |
2763 | ||
db05c3b1 | 2764 | if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 2765 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 2766 | if (retval != 0) { |
21719191 JS |
2767 | printk(KERN_DEBUG "cyc:cy_close retval on " |
2768 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 2769 | } |
9fa1b3b1 | 2770 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 2771 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 2772 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2773 | } |
1da177e4 | 2774 | #endif |
02f1175c JS |
2775 | } |
2776 | ||
9fa1b3b1 | 2777 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2778 | shutdown(info); |
2779 | if (tty->driver->flush_buffer) | |
2780 | tty->driver->flush_buffer(tty); | |
2781 | tty_ldisc_flush(tty); | |
9fa1b3b1 | 2782 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2783 | |
2784 | tty->closing = 0; | |
2785 | info->event = 0; | |
2786 | info->tty = NULL; | |
2787 | if (info->blocked_open) { | |
9fa1b3b1 | 2788 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2789 | if (info->close_delay) { |
2790 | msleep_interruptible(jiffies_to_msecs | |
2791 | (info->close_delay)); | |
2792 | } | |
2793 | wake_up_interruptible(&info->open_wait); | |
9fa1b3b1 | 2794 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2795 | } |
2796 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | |
2797 | wake_up_interruptible(&info->close_wait); | |
1da177e4 LT |
2798 | |
2799 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2800 | printk(KERN_DEBUG "cyc:cy_close done\n"); |
1da177e4 LT |
2801 | #endif |
2802 | ||
9fa1b3b1 | 2803 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2804 | } /* cy_close */ |
1da177e4 LT |
2805 | |
2806 | /* This routine gets called when tty_write has put something into | |
2807 | * the write_queue. The characters may come from user space or | |
2808 | * kernel space. | |
2809 | * | |
2810 | * This routine will return the number of characters actually | |
2811 | * accepted for writing. | |
2812 | * | |
2813 | * If the port is not already transmitting stuff, start it off by | |
2814 | * enabling interrupts. The interrupt service routine will then | |
2815 | * ensure that the characters are sent. | |
2816 | * If the port is already active, there is no need to kick it. | |
2817 | * | |
2818 | */ | |
02f1175c | 2819 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 2820 | { |
cab9bdd1 | 2821 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2822 | unsigned long flags; |
2823 | int c, ret = 0; | |
1da177e4 LT |
2824 | |
2825 | #ifdef CY_DEBUG_IO | |
21719191 | 2826 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
2827 | #endif |
2828 | ||
02f1175c JS |
2829 | if (serial_paranoia_check(info, tty->name, "cy_write")) { |
2830 | return 0; | |
2831 | } | |
1da177e4 | 2832 | |
02f1175c JS |
2833 | if (!info->xmit_buf) |
2834 | return 0; | |
1da177e4 | 2835 | |
9fa1b3b1 | 2836 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c JS |
2837 | while (1) { |
2838 | c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), | |
2839 | (int)(SERIAL_XMIT_SIZE - info->xmit_head))); | |
2840 | ||
2841 | if (c <= 0) | |
2842 | break; | |
2843 | ||
2844 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | |
2845 | info->xmit_head = (info->xmit_head + c) & | |
2846 | (SERIAL_XMIT_SIZE - 1); | |
2847 | info->xmit_cnt += c; | |
2848 | buf += c; | |
2849 | count -= c; | |
2850 | ret += c; | |
2851 | } | |
9fa1b3b1 | 2852 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
2853 | |
2854 | info->idle_stats.xmit_bytes += ret; | |
2855 | info->idle_stats.xmit_idle = jiffies; | |
2856 | ||
2857 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { | |
2858 | start_xmit(info); | |
2859 | } | |
2860 | return ret; | |
2861 | } /* cy_write */ | |
1da177e4 LT |
2862 | |
2863 | /* | |
2864 | * This routine is called by the kernel to write a single | |
2865 | * character to the tty device. If the kernel uses this routine, | |
2866 | * it must call the flush_chars() routine (if defined) when it is | |
2867 | * done stuffing characters into the driver. If there is no room | |
2868 | * in the queue, the character is ignored. | |
2869 | */ | |
02f1175c | 2870 | static void cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 2871 | { |
cab9bdd1 | 2872 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2873 | unsigned long flags; |
1da177e4 LT |
2874 | |
2875 | #ifdef CY_DEBUG_IO | |
21719191 | 2876 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
2877 | #endif |
2878 | ||
02f1175c JS |
2879 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
2880 | return; | |
1da177e4 | 2881 | |
02f1175c JS |
2882 | if (!info->xmit_buf) |
2883 | return; | |
1da177e4 | 2884 | |
9fa1b3b1 | 2885 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 2886 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 2887 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
2888 | return; |
2889 | } | |
1da177e4 | 2890 | |
02f1175c JS |
2891 | info->xmit_buf[info->xmit_head++] = ch; |
2892 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
2893 | info->xmit_cnt++; | |
1da177e4 LT |
2894 | info->idle_stats.xmit_bytes++; |
2895 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 2896 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c | 2897 | } /* cy_put_char */ |
1da177e4 LT |
2898 | |
2899 | /* | |
2900 | * This routine is called by the kernel after it has written a | |
2901 | * series of characters to the tty device using put_char(). | |
2902 | */ | |
02f1175c | 2903 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 2904 | { |
cab9bdd1 | 2905 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2906 | |
1da177e4 | 2907 | #ifdef CY_DEBUG_IO |
21719191 | 2908 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
2909 | #endif |
2910 | ||
02f1175c JS |
2911 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
2912 | return; | |
1da177e4 | 2913 | |
02f1175c JS |
2914 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
2915 | !info->xmit_buf) | |
2916 | return; | |
1da177e4 | 2917 | |
02f1175c JS |
2918 | start_xmit(info); |
2919 | } /* cy_flush_chars */ | |
1da177e4 LT |
2920 | |
2921 | /* | |
2922 | * This routine returns the numbers of characters the tty driver | |
2923 | * will accept for queuing to be written. This number is subject | |
2924 | * to change as output buffers get emptied, or if the output flow | |
2925 | * control is activated. | |
2926 | */ | |
02f1175c | 2927 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 2928 | { |
cab9bdd1 | 2929 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2930 | int ret; |
2931 | ||
1da177e4 | 2932 | #ifdef CY_DEBUG_IO |
21719191 | 2933 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
2934 | #endif |
2935 | ||
02f1175c JS |
2936 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
2937 | return 0; | |
2938 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
2939 | if (ret < 0) | |
2940 | ret = 0; | |
2941 | return ret; | |
2942 | } /* cy_write_room */ | |
1da177e4 | 2943 | |
02f1175c | 2944 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 2945 | { |
875b206b | 2946 | struct cyclades_card *card; |
cab9bdd1 | 2947 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2948 | int channel; |
1da177e4 | 2949 | |
02f1175c JS |
2950 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
2951 | return 0; | |
2952 | ||
2953 | card = info->card; | |
875b206b | 2954 | channel = (info->line) - (card->first_line); |
1da177e4 LT |
2955 | |
2956 | #ifdef Z_EXT_CHARS_IN_BUFFER | |
02f1175c JS |
2957 | if (!IS_CYC_Z(cy_card[card])) { |
2958 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1da177e4 | 2959 | #ifdef CY_DEBUG_IO |
21719191 JS |
2960 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2961 | info->line, info->xmit_cnt); | |
1da177e4 | 2962 | #endif |
02f1175c | 2963 | return info->xmit_cnt; |
1da177e4 | 2964 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 2965 | } else { |
ad39c300 JS |
2966 | static struct FIRM_ID *firm_id; |
2967 | static struct ZFW_CTRL *zfw_ctrl; | |
2968 | static struct CH_CTRL *ch_ctrl; | |
2969 | static struct BUF_CTRL *buf_ctrl; | |
02f1175c | 2970 | int char_count; |
ad39c300 | 2971 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 2972 | |
875b206b JS |
2973 | firm_id = card->base_addr + ID_ADDRESS; |
2974 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 2975 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2976 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
2977 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
2978 | ||
db05c3b1 JS |
2979 | tx_get = readl(&buf_ctrl->tx_get); |
2980 | tx_put = readl(&buf_ctrl->tx_put); | |
2981 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
2982 | if (tx_put >= tx_get) |
2983 | char_count = tx_put - tx_get; | |
2984 | else | |
2985 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 2986 | #ifdef CY_DEBUG_IO |
21719191 JS |
2987 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2988 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 2989 | #endif |
096dcfce | 2990 | return info->xmit_cnt + char_count; |
02f1175c JS |
2991 | } |
2992 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
2993 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
2994 | |
2995 | /* | |
2996 | * ------------------------------------------------------------ | |
2997 | * cy_ioctl() and friends | |
2998 | * ------------------------------------------------------------ | |
2999 | */ | |
3000 | ||
1a86b5e3 | 3001 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 3002 | { |
02f1175c | 3003 | int co, co_val, bpr; |
1a86b5e3 | 3004 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 3005 | 25000000); |
1da177e4 | 3006 | |
02f1175c JS |
3007 | if (baud == 0) { |
3008 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
3009 | return; | |
3010 | } | |
1da177e4 | 3011 | |
02f1175c JS |
3012 | /* determine which prescaler to use */ |
3013 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
3014 | if (cy_clock / co_val / baud > 63) | |
3015 | break; | |
3016 | } | |
1da177e4 | 3017 | |
02f1175c JS |
3018 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
3019 | if (bpr > 255) | |
3020 | bpr = 255; | |
1da177e4 | 3021 | |
02f1175c JS |
3022 | info->tbpr = info->rbpr = bpr; |
3023 | info->tco = info->rco = co; | |
1da177e4 LT |
3024 | } |
3025 | ||
3026 | /* | |
3027 | * This routine finds or computes the various line characteristics. | |
3028 | * It used to be called config_setup | |
3029 | */ | |
02f1175c | 3030 | static void set_line_char(struct cyclades_port *info) |
1da177e4 | 3031 | { |
875b206b | 3032 | struct cyclades_card *card; |
02f1175c JS |
3033 | unsigned long flags; |
3034 | void __iomem *base_addr; | |
875b206b | 3035 | int chip, channel, index; |
02f1175c JS |
3036 | unsigned cflag, iflag; |
3037 | unsigned short chip_number; | |
3038 | int baud, baud_rate = 0; | |
3039 | int i; | |
3040 | ||
3041 | if (!info->tty || !info->tty->termios) { | |
3042 | return; | |
1da177e4 | 3043 | } |
02f1175c JS |
3044 | if (info->line == -1) { |
3045 | return; | |
1da177e4 | 3046 | } |
02f1175c JS |
3047 | cflag = info->tty->termios->c_cflag; |
3048 | iflag = info->tty->termios->c_iflag; | |
1da177e4 | 3049 | |
02f1175c JS |
3050 | /* |
3051 | * Set up the tty->alt_speed kludge | |
3052 | */ | |
3053 | if (info->tty) { | |
3054 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
3055 | info->tty->alt_speed = 57600; | |
3056 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
3057 | info->tty->alt_speed = 115200; | |
3058 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
3059 | info->tty->alt_speed = 230400; | |
3060 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
3061 | info->tty->alt_speed = 460800; | |
1da177e4 | 3062 | } |
02f1175c JS |
3063 | |
3064 | card = info->card; | |
875b206b | 3065 | channel = info->line - card->first_line; |
02f1175c JS |
3066 | chip_number = channel / 4; |
3067 | ||
875b206b | 3068 | if (!IS_CYC_Z(*card)) { |
02f1175c | 3069 | |
875b206b | 3070 | index = card->bus_index; |
02f1175c JS |
3071 | |
3072 | /* baud rate */ | |
3073 | baud = tty_get_baud_rate(info->tty); | |
3074 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3075 | ASYNC_SPD_CUST) { | |
3076 | if (info->custom_divisor) | |
3077 | baud_rate = info->baud / info->custom_divisor; | |
3078 | else | |
3079 | baud_rate = info->baud; | |
3080 | } else if (baud > CD1400_MAX_SPEED) { | |
3081 | baud = CD1400_MAX_SPEED; | |
3082 | } | |
3083 | /* find the baud index */ | |
3084 | for (i = 0; i < 20; i++) { | |
3085 | if (baud == baud_table[i]) { | |
3086 | break; | |
3087 | } | |
3088 | } | |
3089 | if (i == 20) { | |
3090 | i = 19; /* CD1400_MAX_SPEED */ | |
3091 | } | |
3092 | ||
3093 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3094 | ASYNC_SPD_CUST) { | |
3095 | cyy_baud_calc(info, baud_rate); | |
3096 | } else { | |
3097 | if (info->chip_rev >= CD1400_REV_J) { | |
3098 | /* It is a CD1400 rev. J or later */ | |
3099 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
3100 | info->tco = baud_co_60[i]; /* Tx CO */ | |
3101 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
3102 | info->rco = baud_co_60[i]; /* Rx CO */ | |
3103 | } else { | |
3104 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
3105 | info->tco = baud_co_25[i]; /* Tx CO */ | |
3106 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
3107 | info->rco = baud_co_25[i]; /* Rx CO */ | |
3108 | } | |
3109 | } | |
3110 | if (baud_table[i] == 134) { | |
3111 | /* get it right for 134.5 baud */ | |
3112 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3113 | 2; | |
3114 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3115 | ASYNC_SPD_CUST) { | |
3116 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3117 | baud_rate) + 2; | |
3118 | } else if (baud_table[i]) { | |
3119 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3120 | baud_table[i]) + 2; | |
3121 | /* this needs to be propagated into the card info */ | |
3122 | } else { | |
3123 | info->timeout = 0; | |
3124 | } | |
3125 | /* By tradition (is it a standard?) a baud rate of zero | |
3126 | implies the line should be/has been closed. A bit | |
3127 | later in this routine such a test is performed. */ | |
3128 | ||
3129 | /* byte size and parity */ | |
3130 | info->cor5 = 0; | |
3131 | info->cor4 = 0; | |
3132 | /* receive threshold */ | |
3133 | info->cor3 = (info->default_threshold ? | |
3134 | info->default_threshold : baud_cor3[i]); | |
3135 | info->cor2 = CyETC; | |
3136 | switch (cflag & CSIZE) { | |
3137 | case CS5: | |
3138 | info->cor1 = Cy_5_BITS; | |
3139 | break; | |
3140 | case CS6: | |
3141 | info->cor1 = Cy_6_BITS; | |
3142 | break; | |
3143 | case CS7: | |
3144 | info->cor1 = Cy_7_BITS; | |
3145 | break; | |
3146 | case CS8: | |
3147 | info->cor1 = Cy_8_BITS; | |
3148 | break; | |
3149 | } | |
3150 | if (cflag & CSTOPB) { | |
3151 | info->cor1 |= Cy_2_STOP; | |
3152 | } | |
3153 | if (cflag & PARENB) { | |
3154 | if (cflag & PARODD) { | |
3155 | info->cor1 |= CyPARITY_O; | |
3156 | } else { | |
3157 | info->cor1 |= CyPARITY_E; | |
3158 | } | |
3159 | } else { | |
3160 | info->cor1 |= CyPARITY_NONE; | |
3161 | } | |
3162 | ||
3163 | /* CTS flow control flag */ | |
3164 | if (cflag & CRTSCTS) { | |
3165 | info->flags |= ASYNC_CTS_FLOW; | |
3166 | info->cor2 |= CyCtsAE; | |
3167 | } else { | |
3168 | info->flags &= ~ASYNC_CTS_FLOW; | |
3169 | info->cor2 &= ~CyCtsAE; | |
3170 | } | |
3171 | if (cflag & CLOCAL) | |
3172 | info->flags &= ~ASYNC_CHECK_CD; | |
3173 | else | |
3174 | info->flags |= ASYNC_CHECK_CD; | |
1da177e4 LT |
3175 | |
3176 | /*********************************************** | |
3177 | The hardware option, CyRtsAO, presents RTS when | |
3178 | the chip has characters to send. Since most modems | |
3179 | use RTS as reverse (inbound) flow control, this | |
3180 | option is not used. If inbound flow control is | |
3181 | necessary, DTR can be programmed to provide the | |
3182 | appropriate signals for use with a non-standard | |
3183 | cable. Contact Marcio Saito for details. | |
3184 | ***********************************************/ | |
3185 | ||
02f1175c JS |
3186 | chip = channel >> 2; |
3187 | channel &= 0x03; | |
875b206b | 3188 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 3189 | |
9fa1b3b1 | 3190 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3191 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
3192 | ||
3193 | /* tx and rx baud rate */ | |
3194 | ||
3195 | cy_writeb(base_addr + (CyTCOR << index), info->tco); | |
3196 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); | |
3197 | cy_writeb(base_addr + (CyRCOR << index), info->rco); | |
3198 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); | |
3199 | ||
3200 | /* set line characteristics according configuration */ | |
3201 | ||
3202 | cy_writeb(base_addr + (CySCHR1 << index), | |
3203 | START_CHAR(info->tty)); | |
3204 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->tty)); | |
3205 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); | |
3206 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); | |
3207 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); | |
3208 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); | |
3209 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); | |
3210 | ||
3211 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | | |
3212 | CyCOR3ch, index); | |
3213 | ||
3214 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); /* !!! Is this needed? */ | |
3215 | cy_writeb(base_addr + (CyRTPR << index), | |
3216 | (info->default_timeout ? info->default_timeout : 0x02)); | |
3217 | /* 10ms rx timeout */ | |
3218 | ||
3219 | if (C_CLOCAL(info->tty)) { | |
3220 | /* without modem intr */ | |
3221 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3222 | readb(base_addr + (CySRER << index)) | CyMdmCh); |
02f1175c JS |
3223 | /* act on 1->0 modem transitions */ |
3224 | if ((cflag & CRTSCTS) && info->rflow) { | |
3225 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3226 | (CyCTS | rflow_thr[i])); | |
3227 | } else { | |
3228 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3229 | CyCTS); | |
3230 | } | |
3231 | /* act on 0->1 modem transitions */ | |
3232 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); | |
1da177e4 | 3233 | } else { |
02f1175c JS |
3234 | /* without modem intr */ |
3235 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3236 | readb(base_addr + |
02f1175c JS |
3237 | (CySRER << index)) | CyMdmCh); |
3238 | /* act on 1->0 modem transitions */ | |
3239 | if ((cflag & CRTSCTS) && info->rflow) { | |
3240 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3241 | (CyDSR | CyCTS | CyRI | CyDCD | | |
3242 | rflow_thr[i])); | |
3243 | } else { | |
3244 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3245 | CyDSR | CyCTS | CyRI | CyDCD); | |
3246 | } | |
3247 | /* act on 0->1 modem transitions */ | |
3248 | cy_writeb(base_addr + (CyMCOR2 << index), | |
3249 | CyDSR | CyCTS | CyRI | CyDCD); | |
1da177e4 | 3250 | } |
02f1175c JS |
3251 | |
3252 | if (i == 0) { /* baud rate is zero, turn off line */ | |
3253 | if (info->rtsdtr_inv) { | |
3254 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3255 | ~CyRTS); | |
3256 | } else { | |
3257 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3258 | ~CyDTR); | |
3259 | } | |
1da177e4 | 3260 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3261 | printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n"); |
3262 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3263 | readb(base_addr + (CyMSVR1 << index)), |
3264 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3265 | #endif |
02f1175c JS |
3266 | } else { |
3267 | if (info->rtsdtr_inv) { | |
3268 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3269 | CyRTS); | |
3270 | } else { | |
3271 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3272 | CyDTR); | |
3273 | } | |
1da177e4 | 3274 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3275 | printk(KERN_DEBUG "cyc:set_line_char raising DTR\n"); |
3276 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3277 | readb(base_addr + (CyMSVR1 << index)), |
3278 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3279 | #endif |
02f1175c | 3280 | } |
1da177e4 | 3281 | |
02f1175c JS |
3282 | if (info->tty) { |
3283 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3284 | } | |
9fa1b3b1 | 3285 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 3286 | |
1da177e4 | 3287 | } else { |
02f1175c JS |
3288 | struct FIRM_ID __iomem *firm_id; |
3289 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3290 | struct BOARD_CTRL __iomem *board_ctrl; | |
3291 | struct CH_CTRL __iomem *ch_ctrl; | |
3292 | struct BUF_CTRL __iomem *buf_ctrl; | |
1a86b5e3 | 3293 | __u32 sw_flow; |
02f1175c | 3294 | int retval; |
1da177e4 | 3295 | |
875b206b JS |
3296 | firm_id = card->base_addr + ID_ADDRESS; |
3297 | if (!ISZLOADED(*card)) { | |
02f1175c JS |
3298 | return; |
3299 | } | |
1da177e4 | 3300 | |
875b206b | 3301 | zfw_ctrl = card->base_addr + |
db05c3b1 | 3302 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3303 | board_ctrl = &zfw_ctrl->board_ctrl; |
3304 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); | |
3305 | buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3306 | ||
3307 | /* baud rate */ | |
3308 | baud = tty_get_baud_rate(info->tty); | |
3309 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3310 | ASYNC_SPD_CUST) { | |
3311 | if (info->custom_divisor) | |
3312 | baud_rate = info->baud / info->custom_divisor; | |
3313 | else | |
3314 | baud_rate = info->baud; | |
3315 | } else if (baud > CYZ_MAX_SPEED) { | |
3316 | baud = CYZ_MAX_SPEED; | |
3317 | } | |
3318 | cy_writel(&ch_ctrl->comm_baud, baud); | |
3319 | ||
3320 | if (baud == 134) { | |
3321 | /* get it right for 134.5 baud */ | |
3322 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3323 | 2; | |
3324 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3325 | ASYNC_SPD_CUST) { | |
3326 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3327 | baud_rate) + 2; | |
3328 | } else if (baud) { | |
3329 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3330 | baud) + 2; | |
3331 | /* this needs to be propagated into the card info */ | |
3332 | } else { | |
3333 | info->timeout = 0; | |
3334 | } | |
1da177e4 | 3335 | |
02f1175c JS |
3336 | /* byte size and parity */ |
3337 | switch (cflag & CSIZE) { | |
3338 | case CS5: | |
3339 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
3340 | break; | |
3341 | case CS6: | |
3342 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
3343 | break; | |
3344 | case CS7: | |
3345 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
3346 | break; | |
3347 | case CS8: | |
3348 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
3349 | break; | |
3350 | } | |
3351 | if (cflag & CSTOPB) { | |
3352 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3353 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
3354 | } else { |
3355 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3356 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
3357 | } |
3358 | if (cflag & PARENB) { | |
3359 | if (cflag & PARODD) { | |
3360 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); | |
3361 | } else { | |
3362 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); | |
3363 | } | |
3364 | } else { | |
3365 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); | |
3366 | } | |
1da177e4 | 3367 | |
02f1175c JS |
3368 | /* CTS flow control flag */ |
3369 | if (cflag & CRTSCTS) { | |
3370 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 3371 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 3372 | } else { |
db05c3b1 JS |
3373 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
3374 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
3375 | } |
3376 | /* As the HW flow control is done in firmware, the driver | |
3377 | doesn't need to care about it */ | |
3378 | info->flags &= ~ASYNC_CTS_FLOW; | |
3379 | ||
3380 | /* XON/XOFF/XANY flow control flags */ | |
3381 | sw_flow = 0; | |
3382 | if (iflag & IXON) { | |
3383 | sw_flow |= C_FL_OXX; | |
3384 | if (iflag & IXANY) | |
3385 | sw_flow |= C_FL_OIXANY; | |
3386 | } | |
3387 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
3388 | ||
875b206b | 3389 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 3390 | if (retval != 0) { |
21719191 JS |
3391 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
3392 | "was %x\n", info->line, retval); | |
02f1175c JS |
3393 | } |
3394 | ||
3395 | /* CD sensitivity */ | |
3396 | if (cflag & CLOCAL) { | |
3397 | info->flags &= ~ASYNC_CHECK_CD; | |
3398 | } else { | |
3399 | info->flags |= ASYNC_CHECK_CD; | |
3400 | } | |
1da177e4 | 3401 | |
02f1175c JS |
3402 | if (baud == 0) { /* baud rate is zero, turn off line */ |
3403 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3404 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 3405 | #ifdef CY_DEBUG_DTR |
21719191 | 3406 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 3407 | #endif |
02f1175c JS |
3408 | } else { |
3409 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3410 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 3411 | #ifdef CY_DEBUG_DTR |
21719191 | 3412 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 3413 | #endif |
02f1175c | 3414 | } |
1da177e4 | 3415 | |
875b206b | 3416 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM,0L); |
02f1175c | 3417 | if (retval != 0) { |
21719191 JS |
3418 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
3419 | "was %x\n", info->line, retval); | |
02f1175c | 3420 | } |
1da177e4 | 3421 | |
02f1175c JS |
3422 | if (info->tty) { |
3423 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3424 | } | |
1da177e4 | 3425 | } |
02f1175c | 3426 | } /* set_line_char */ |
1da177e4 LT |
3427 | |
3428 | static int | |
02f1175c JS |
3429 | get_serial_info(struct cyclades_port *info, |
3430 | struct serial_struct __user * retinfo) | |
1da177e4 | 3431 | { |
02f1175c | 3432 | struct serial_struct tmp; |
875b206b | 3433 | struct cyclades_card *cinfo = info->card; |
1da177e4 | 3434 | |
02f1175c JS |
3435 | if (!retinfo) |
3436 | return -EFAULT; | |
3437 | memset(&tmp, 0, sizeof(tmp)); | |
3438 | tmp.type = info->type; | |
3439 | tmp.line = info->line; | |
875b206b JS |
3440 | tmp.port = (info->card - cy_card) * 0x100 + info->line - |
3441 | cinfo->first_line; | |
02f1175c JS |
3442 | tmp.irq = cinfo->irq; |
3443 | tmp.flags = info->flags; | |
3444 | tmp.close_delay = info->close_delay; | |
d5dedf99 | 3445 | tmp.closing_wait = info->closing_wait; |
02f1175c JS |
3446 | tmp.baud_base = info->baud; |
3447 | tmp.custom_divisor = info->custom_divisor; | |
3448 | tmp.hub6 = 0; /*!!! */ | |
3449 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
3450 | } /* get_serial_info */ | |
1da177e4 LT |
3451 | |
3452 | static int | |
02f1175c JS |
3453 | set_serial_info(struct cyclades_port *info, |
3454 | struct serial_struct __user * new_info) | |
1da177e4 | 3455 | { |
02f1175c JS |
3456 | struct serial_struct new_serial; |
3457 | struct cyclades_port old_info; | |
3458 | ||
3459 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
3460 | return -EFAULT; | |
3461 | old_info = *info; | |
3462 | ||
3463 | if (!capable(CAP_SYS_ADMIN)) { | |
3464 | if (new_serial.close_delay != info->close_delay || | |
3465 | new_serial.baud_base != info->baud || | |
3466 | (new_serial.flags & ASYNC_FLAGS & | |
3467 | ~ASYNC_USR_MASK) != | |
3468 | (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) | |
3469 | return -EPERM; | |
3470 | info->flags = (info->flags & ~ASYNC_USR_MASK) | | |
3471 | (new_serial.flags & ASYNC_USR_MASK); | |
3472 | info->baud = new_serial.baud_base; | |
3473 | info->custom_divisor = new_serial.custom_divisor; | |
3474 | goto check_and_exit; | |
3475 | } | |
3476 | ||
3477 | /* | |
3478 | * OK, past this point, all the error checking has been done. | |
3479 | * At this point, we start making changes..... | |
3480 | */ | |
3481 | ||
3482 | info->baud = new_serial.baud_base; | |
3483 | info->custom_divisor = new_serial.custom_divisor; | |
3484 | info->flags = (info->flags & ~ASYNC_FLAGS) | | |
3485 | (new_serial.flags & ASYNC_FLAGS); | |
3486 | info->close_delay = new_serial.close_delay * HZ / 100; | |
3487 | info->closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
3488 | |
3489 | check_and_exit: | |
02f1175c JS |
3490 | if (info->flags & ASYNC_INITIALIZED) { |
3491 | set_line_char(info); | |
3492 | return 0; | |
3493 | } else { | |
3494 | return startup(info); | |
3495 | } | |
3496 | } /* set_serial_info */ | |
1da177e4 LT |
3497 | |
3498 | /* | |
3499 | * get_lsr_info - get line status register info | |
3500 | * | |
3501 | * Purpose: Let user call ioctl() to get info when the UART physically | |
3502 | * is emptied. On bus types like RS485, the transmitter must | |
3503 | * release the bus after transmitting. This must be done when | |
3504 | * the transmit shift register is empty, not be done when the | |
3505 | * transmit holding register is empty. This functionality | |
3506 | * allows an RS485 driver to be written in user space. | |
3507 | */ | |
02f1175c | 3508 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user * value) |
1da177e4 | 3509 | { |
875b206b JS |
3510 | struct cyclades_card *card; |
3511 | int chip, channel, index; | |
02f1175c JS |
3512 | unsigned char status; |
3513 | unsigned int result; | |
3514 | unsigned long flags; | |
3515 | void __iomem *base_addr; | |
1da177e4 | 3516 | |
02f1175c | 3517 | card = info->card; |
875b206b JS |
3518 | channel = (info->line) - (card->first_line); |
3519 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3520 | chip = channel >> 2; |
3521 | channel &= 0x03; | |
875b206b JS |
3522 | index = card->bus_index; |
3523 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3524 | |
9fa1b3b1 | 3525 | spin_lock_irqsave(&card->card_lock, flags); |
db05c3b1 | 3526 | status = readb(base_addr + (CySRER << index)) & |
02f1175c | 3527 | (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 3528 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3529 | result = (status ? 0 : TIOCSER_TEMT); |
3530 | } else { | |
3531 | /* Not supported yet */ | |
3532 | return -EINVAL; | |
3533 | } | |
3534 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
3535 | } |
3536 | ||
02f1175c | 3537 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 3538 | { |
cab9bdd1 | 3539 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3540 | struct cyclades_card *card; |
3541 | int chip, channel, index; | |
02f1175c JS |
3542 | void __iomem *base_addr; |
3543 | unsigned long flags; | |
3544 | unsigned char status; | |
3545 | unsigned long lstatus; | |
3546 | unsigned int result; | |
3547 | struct FIRM_ID __iomem *firm_id; | |
3548 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3549 | struct BOARD_CTRL __iomem *board_ctrl; | |
3550 | struct CH_CTRL __iomem *ch_ctrl; | |
3551 | ||
3552 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3553 | return -ENODEV; | |
1da177e4 | 3554 | |
02f1175c | 3555 | card = info->card; |
875b206b JS |
3556 | channel = info->line - card->first_line; |
3557 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3558 | chip = channel >> 2; |
3559 | channel &= 0x03; | |
875b206b JS |
3560 | index = card->bus_index; |
3561 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3562 | |
9fa1b3b1 | 3563 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3564 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
db05c3b1 JS |
3565 | status = readb(base_addr + (CyMSVR1 << index)); |
3566 | status |= readb(base_addr + (CyMSVR2 << index)); | |
9fa1b3b1 | 3567 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3568 | |
3569 | if (info->rtsdtr_inv) { | |
3570 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
3571 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
3572 | } else { | |
3573 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
3574 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
3575 | } | |
3576 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
3577 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
3578 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
3579 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 3580 | } else { |
875b206b JS |
3581 | base_addr = card->base_addr; |
3582 | firm_id = card->base_addr + ID_ADDRESS; | |
3583 | if (ISZLOADED(*card)) { | |
3584 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 3585 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3586 | board_ctrl = &zfw_ctrl->board_ctrl; |
3587 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
db05c3b1 | 3588 | lstatus = readl(&ch_ctrl[channel].rs_status); |
02f1175c JS |
3589 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
3590 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
3591 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
3592 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
3593 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
3594 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
3595 | } else { | |
3596 | result = 0; | |
3597 | return -ENODEV; | |
3598 | } | |
1da177e4 | 3599 | |
02f1175c JS |
3600 | } |
3601 | return result; | |
3602 | } /* cy_tiomget */ | |
1da177e4 LT |
3603 | |
3604 | static int | |
3605 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
02f1175c | 3606 | unsigned int set, unsigned int clear) |
1da177e4 | 3607 | { |
cab9bdd1 | 3608 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3609 | struct cyclades_card *card; |
3610 | int chip, channel, index; | |
02f1175c JS |
3611 | void __iomem *base_addr; |
3612 | unsigned long flags; | |
3613 | struct FIRM_ID __iomem *firm_id; | |
3614 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3615 | struct BOARD_CTRL __iomem *board_ctrl; | |
3616 | struct CH_CTRL __iomem *ch_ctrl; | |
3617 | int retval; | |
3618 | ||
3619 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3620 | return -ENODEV; | |
3621 | ||
3622 | card = info->card; | |
875b206b JS |
3623 | channel = (info->line) - (card->first_line); |
3624 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3625 | chip = channel >> 2; |
3626 | channel &= 0x03; | |
875b206b JS |
3627 | index = card->bus_index; |
3628 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c JS |
3629 | |
3630 | if (set & TIOCM_RTS) { | |
9fa1b3b1 | 3631 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3632 | cy_writeb(base_addr + (CyCAR << index), |
3633 | (u_char) channel); | |
3634 | if (info->rtsdtr_inv) { | |
3635 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3636 | CyDTR); | |
3637 | } else { | |
3638 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3639 | CyRTS); | |
3640 | } | |
9fa1b3b1 | 3641 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3642 | } |
3643 | if (clear & TIOCM_RTS) { | |
9fa1b3b1 | 3644 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3645 | cy_writeb(base_addr + (CyCAR << index), |
3646 | (u_char) channel); | |
3647 | if (info->rtsdtr_inv) { | |
3648 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3649 | ~CyDTR); | |
3650 | } else { | |
3651 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3652 | ~CyRTS); | |
3653 | } | |
9fa1b3b1 | 3654 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3655 | } |
3656 | if (set & TIOCM_DTR) { | |
9fa1b3b1 | 3657 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3658 | cy_writeb(base_addr + (CyCAR << index), |
3659 | (u_char) channel); | |
3660 | if (info->rtsdtr_inv) { | |
3661 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3662 | CyRTS); | |
3663 | } else { | |
3664 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3665 | CyDTR); | |
3666 | } | |
1da177e4 | 3667 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3668 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); |
3669 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3670 | readb(base_addr + (CyMSVR1 << index)), |
3671 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3672 | #endif |
9fa1b3b1 | 3673 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3674 | } |
3675 | if (clear & TIOCM_DTR) { | |
9fa1b3b1 | 3676 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3677 | cy_writeb(base_addr + (CyCAR << index), |
3678 | (u_char) channel); | |
3679 | if (info->rtsdtr_inv) { | |
3680 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3681 | ~CyRTS); | |
3682 | } else { | |
3683 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3684 | ~CyDTR); | |
3685 | } | |
1da177e4 LT |
3686 | |
3687 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
3688 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); |
3689 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3690 | readb(base_addr + (CyMSVR1 << index)), |
3691 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3692 | #endif |
9fa1b3b1 | 3693 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3694 | } |
3695 | } else { | |
875b206b | 3696 | base_addr = card->base_addr; |
02f1175c | 3697 | |
875b206b JS |
3698 | firm_id = card->base_addr + ID_ADDRESS; |
3699 | if (ISZLOADED(*card)) { | |
3700 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 3701 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3702 | board_ctrl = &zfw_ctrl->board_ctrl; |
3703 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
3704 | ||
3705 | if (set & TIOCM_RTS) { | |
9fa1b3b1 | 3706 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3707 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3708 | readl(&ch_ctrl[channel].rs_control) | |
3709 | C_RS_RTS); | |
9fa1b3b1 | 3710 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3711 | } |
3712 | if (clear & TIOCM_RTS) { | |
9fa1b3b1 | 3713 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3714 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3715 | readl(&ch_ctrl[channel].rs_control) & |
3716 | ~C_RS_RTS); | |
9fa1b3b1 | 3717 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3718 | } |
3719 | if (set & TIOCM_DTR) { | |
9fa1b3b1 | 3720 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3721 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3722 | readl(&ch_ctrl[channel].rs_control) | |
3723 | C_RS_DTR); | |
1da177e4 | 3724 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3725 | printk(KERN_DEBUG "cyc:set_modem_info raising " |
3726 | "Z DTR\n"); | |
1da177e4 | 3727 | #endif |
9fa1b3b1 | 3728 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3729 | } |
3730 | if (clear & TIOCM_DTR) { | |
9fa1b3b1 | 3731 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3732 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3733 | readl(&ch_ctrl[channel].rs_control) & |
3734 | ~C_RS_DTR); | |
1da177e4 | 3735 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3736 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
3737 | "Z DTR\n"); | |
1da177e4 | 3738 | #endif |
9fa1b3b1 | 3739 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3740 | } |
3741 | } else { | |
3742 | return -ENODEV; | |
3743 | } | |
9fa1b3b1 JS |
3744 | spin_lock_irqsave(&card->card_lock, flags); |
3745 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); | |
02f1175c | 3746 | if (retval != 0) { |
21719191 JS |
3747 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
3748 | "was %x\n", info->line, retval); | |
02f1175c | 3749 | } |
9fa1b3b1 | 3750 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 3751 | } |
02f1175c JS |
3752 | return 0; |
3753 | } /* cy_tiocmset */ | |
1da177e4 LT |
3754 | |
3755 | /* | |
3756 | * cy_break() --- routine which turns the break handling on or off | |
3757 | */ | |
02f1175c | 3758 | static void cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 3759 | { |
cab9bdd1 | 3760 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 3761 | struct cyclades_card *card; |
02f1175c | 3762 | unsigned long flags; |
1da177e4 | 3763 | |
02f1175c JS |
3764 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
3765 | return; | |
1da177e4 | 3766 | |
9fa1b3b1 JS |
3767 | card = info->card; |
3768 | ||
3769 | spin_lock_irqsave(&card->card_lock, flags); | |
3770 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3771 | /* Let the transmit ISR take care of this (since it |
3772 | requires stuffing characters into the output stream). | |
3773 | */ | |
3774 | if (break_state == -1) { | |
3775 | if (!info->breakon) { | |
3776 | info->breakon = 1; | |
3777 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 3778 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3779 | start_xmit(info); |
9fa1b3b1 | 3780 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3781 | } |
3782 | } | |
3783 | } else { | |
3784 | if (!info->breakoff) { | |
3785 | info->breakoff = 1; | |
3786 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 3787 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3788 | start_xmit(info); |
9fa1b3b1 | 3789 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3790 | } |
3791 | } | |
1da177e4 | 3792 | } |
1da177e4 | 3793 | } else { |
02f1175c JS |
3794 | int retval; |
3795 | ||
3796 | if (break_state == -1) { | |
9fa1b3b1 JS |
3797 | retval = cyz_issue_cmd(card, |
3798 | info->line - card->first_line, | |
02f1175c JS |
3799 | C_CM_SET_BREAK, 0L); |
3800 | if (retval != 0) { | |
21719191 JS |
3801 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
3802 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
3803 | } |
3804 | } else { | |
9fa1b3b1 JS |
3805 | retval = cyz_issue_cmd(card, |
3806 | info->line - card->first_line, | |
02f1175c JS |
3807 | C_CM_CLR_BREAK, 0L); |
3808 | if (retval != 0) { | |
21719191 JS |
3809 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
3810 | "on ttyC%d was %x\n", info->line, | |
3811 | retval); | |
02f1175c | 3812 | } |
1da177e4 | 3813 | } |
1da177e4 | 3814 | } |
9fa1b3b1 | 3815 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3816 | } /* cy_break */ |
1da177e4 LT |
3817 | |
3818 | static int | |
02f1175c | 3819 | get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) |
1da177e4 LT |
3820 | { |
3821 | ||
02f1175c JS |
3822 | if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) |
3823 | return -EFAULT; | |
3824 | info->mon.int_count = 0; | |
3825 | info->mon.char_count = 0; | |
3826 | info->mon.char_max = 0; | |
3827 | info->mon.char_last = 0; | |
3828 | return 0; | |
3829 | } /* get_mon_info */ | |
1da177e4 | 3830 | |
02f1175c | 3831 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3832 | { |
875b206b | 3833 | struct cyclades_card *card; |
02f1175c | 3834 | void __iomem *base_addr; |
875b206b | 3835 | int channel, chip, index; |
02f1175c | 3836 | unsigned long flags; |
1da177e4 | 3837 | |
02f1175c | 3838 | card = info->card; |
875b206b JS |
3839 | channel = info->line - card->first_line; |
3840 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3841 | chip = channel >> 2; |
3842 | channel &= 0x03; | |
875b206b | 3843 | index = card->bus_index; |
02f1175c | 3844 | base_addr = |
875b206b | 3845 | card->base_addr + (cy_chip_offset[chip] << index); |
02f1175c JS |
3846 | |
3847 | info->cor3 &= ~CyREC_FIFO; | |
3848 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 3849 | |
9fa1b3b1 | 3850 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3851 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
3852 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); | |
9fa1b3b1 | 3853 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3854 | } |
3855 | return 0; | |
3856 | } /* set_threshold */ | |
1da177e4 LT |
3857 | |
3858 | static int | |
02f1175c | 3859 | get_threshold(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3860 | { |
875b206b | 3861 | struct cyclades_card *card; |
02f1175c | 3862 | void __iomem *base_addr; |
875b206b | 3863 | int channel, chip, index; |
02f1175c | 3864 | unsigned long tmp; |
1da177e4 | 3865 | |
02f1175c | 3866 | card = info->card; |
875b206b JS |
3867 | channel = info->line - card->first_line; |
3868 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3869 | chip = channel >> 2; |
3870 | channel &= 0x03; | |
875b206b JS |
3871 | index = card->bus_index; |
3872 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3873 | |
db05c3b1 | 3874 | tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
02f1175c | 3875 | return put_user(tmp, value); |
02f1175c | 3876 | } |
f7429034 | 3877 | return 0; |
02f1175c | 3878 | } /* get_threshold */ |
1da177e4 LT |
3879 | |
3880 | static int | |
02f1175c | 3881 | set_default_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3882 | { |
02f1175c JS |
3883 | info->default_threshold = value & 0x0f; |
3884 | return 0; | |
3885 | } /* set_default_threshold */ | |
1da177e4 LT |
3886 | |
3887 | static int | |
02f1175c | 3888 | get_default_threshold(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3889 | { |
02f1175c JS |
3890 | return put_user(info->default_threshold, value); |
3891 | } /* get_default_threshold */ | |
1da177e4 | 3892 | |
02f1175c | 3893 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3894 | { |
875b206b | 3895 | struct cyclades_card *card; |
02f1175c | 3896 | void __iomem *base_addr; |
875b206b | 3897 | int channel, chip, index; |
02f1175c | 3898 | unsigned long flags; |
1da177e4 | 3899 | |
02f1175c | 3900 | card = info->card; |
875b206b JS |
3901 | channel = info->line - card->first_line; |
3902 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3903 | chip = channel >> 2; |
3904 | channel &= 0x03; | |
875b206b JS |
3905 | index = card->bus_index; |
3906 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3907 | |
9fa1b3b1 | 3908 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3909 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); |
9fa1b3b1 | 3910 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3911 | } |
3912 | return 0; | |
3913 | } /* set_timeout */ | |
1da177e4 | 3914 | |
02f1175c | 3915 | static int get_timeout(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3916 | { |
875b206b | 3917 | struct cyclades_card *card; |
02f1175c | 3918 | void __iomem *base_addr; |
875b206b | 3919 | int channel, chip, index; |
02f1175c | 3920 | unsigned long tmp; |
1da177e4 | 3921 | |
02f1175c | 3922 | card = info->card; |
875b206b JS |
3923 | channel = info->line - card->first_line; |
3924 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3925 | chip = channel >> 2; |
3926 | channel &= 0x03; | |
875b206b JS |
3927 | index = card->bus_index; |
3928 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3929 | |
db05c3b1 | 3930 | tmp = readb(base_addr + (CyRTPR << index)); |
02f1175c | 3931 | return put_user(tmp, value); |
02f1175c | 3932 | } |
f7429034 | 3933 | return 0; |
02f1175c | 3934 | } /* get_timeout */ |
1da177e4 | 3935 | |
02f1175c | 3936 | static int set_default_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3937 | { |
02f1175c JS |
3938 | info->default_timeout = value & 0xff; |
3939 | return 0; | |
3940 | } /* set_default_timeout */ | |
1da177e4 LT |
3941 | |
3942 | static int | |
02f1175c | 3943 | get_default_timeout(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3944 | { |
02f1175c JS |
3945 | return put_user(info->default_timeout, value); |
3946 | } /* get_default_timeout */ | |
1da177e4 LT |
3947 | |
3948 | /* | |
3949 | * This routine allows the tty driver to implement device- | |
3950 | * specific ioctl's. If the ioctl number passed in cmd is | |
3951 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
3952 | */ | |
3953 | static int | |
02f1175c JS |
3954 | cy_ioctl(struct tty_struct *tty, struct file *file, |
3955 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 3956 | { |
cab9bdd1 | 3957 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
3958 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ |
3959 | struct serial_icounter_struct __user *p_cuser; /* user space */ | |
3960 | int ret_val = 0; | |
3961 | unsigned long flags; | |
3962 | void __user *argp = (void __user *)arg; | |
3963 | ||
3964 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
3965 | return -ENODEV; | |
1da177e4 LT |
3966 | |
3967 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
3968 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
3969 | info->line, cmd, arg); | |
1da177e4 LT |
3970 | #endif |
3971 | ||
02f1175c JS |
3972 | switch (cmd) { |
3973 | case CYGETMON: | |
3974 | ret_val = get_mon_info(info, argp); | |
3975 | break; | |
3976 | case CYGETTHRESH: | |
3977 | ret_val = get_threshold(info, argp); | |
3978 | break; | |
3979 | case CYSETTHRESH: | |
3980 | ret_val = set_threshold(info, arg); | |
3981 | break; | |
3982 | case CYGETDEFTHRESH: | |
3983 | ret_val = get_default_threshold(info, argp); | |
3984 | break; | |
3985 | case CYSETDEFTHRESH: | |
3986 | ret_val = set_default_threshold(info, arg); | |
3987 | break; | |
3988 | case CYGETTIMEOUT: | |
3989 | ret_val = get_timeout(info, argp); | |
3990 | break; | |
3991 | case CYSETTIMEOUT: | |
3992 | ret_val = set_timeout(info, arg); | |
3993 | break; | |
3994 | case CYGETDEFTIMEOUT: | |
3995 | ret_val = get_default_timeout(info, argp); | |
3996 | break; | |
3997 | case CYSETDEFTIMEOUT: | |
3998 | ret_val = set_default_timeout(info, arg); | |
3999 | break; | |
1da177e4 | 4000 | case CYSETRFLOW: |
02f1175c JS |
4001 | info->rflow = (int)arg; |
4002 | ret_val = 0; | |
4003 | break; | |
1da177e4 | 4004 | case CYGETRFLOW: |
02f1175c JS |
4005 | ret_val = info->rflow; |
4006 | break; | |
1da177e4 | 4007 | case CYSETRTSDTR_INV: |
02f1175c JS |
4008 | info->rtsdtr_inv = (int)arg; |
4009 | ret_val = 0; | |
4010 | break; | |
1da177e4 | 4011 | case CYGETRTSDTR_INV: |
02f1175c JS |
4012 | ret_val = info->rtsdtr_inv; |
4013 | break; | |
1da177e4 | 4014 | case CYGETCD1400VER: |
02f1175c JS |
4015 | ret_val = info->chip_rev; |
4016 | break; | |
1da177e4 LT |
4017 | #ifndef CONFIG_CYZ_INTR |
4018 | case CYZSETPOLLCYCLE: | |
02f1175c JS |
4019 | cyz_polling_cycle = (arg * HZ) / 1000; |
4020 | ret_val = 0; | |
4021 | break; | |
1da177e4 | 4022 | case CYZGETPOLLCYCLE: |
02f1175c JS |
4023 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
4024 | break; | |
4025 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 4026 | case CYSETWAIT: |
02f1175c JS |
4027 | info->closing_wait = (unsigned short)arg *HZ / 100; |
4028 | ret_val = 0; | |
4029 | break; | |
1da177e4 | 4030 | case CYGETWAIT: |
02f1175c JS |
4031 | ret_val = info->closing_wait / (HZ / 100); |
4032 | break; | |
4033 | case TIOCGSERIAL: | |
4034 | ret_val = get_serial_info(info, argp); | |
4035 | break; | |
4036 | case TIOCSSERIAL: | |
4037 | ret_val = set_serial_info(info, argp); | |
4038 | break; | |
4039 | case TIOCSERGETLSR: /* Get line status register */ | |
4040 | ret_val = get_lsr_info(info, argp); | |
4041 | break; | |
4042 | /* | |
4043 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
4044 | * - mask passed in arg for lines of interest | |
4045 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
4046 | * Caller should use TIOCGICOUNT to see which one it was | |
4047 | */ | |
1da177e4 | 4048 | case TIOCMIWAIT: |
9fa1b3b1 | 4049 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 4050 | /* note the counters on entry */ |
2c7fea99 | 4051 | cnow = info->icount; |
9fa1b3b1 | 4052 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
2c7fea99 JS |
4053 | ret_val = wait_event_interruptible(info->delta_msr_wait, ({ |
4054 | cprev = cnow; | |
9fa1b3b1 | 4055 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 4056 | cnow = info->icount; /* atomic copy */ |
9fa1b3b1 | 4057 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c | 4058 | |
2c7fea99 JS |
4059 | ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
4060 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
4061 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4062 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)); | |
4063 | })); | |
4064 | break; | |
1da177e4 | 4065 | |
02f1175c JS |
4066 | /* |
4067 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
4068 | * Return: write counters to the user passed counter struct | |
4069 | * NB: both 1->0 and 0->1 transitions are counted except for | |
4070 | * RI where only 0->1 is counted. | |
4071 | */ | |
1da177e4 | 4072 | case TIOCGICOUNT: |
9fa1b3b1 | 4073 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 4074 | cnow = info->icount; |
9fa1b3b1 | 4075 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
4076 | p_cuser = argp; |
4077 | ret_val = put_user(cnow.cts, &p_cuser->cts); | |
4078 | if (ret_val) | |
4079 | return ret_val; | |
4080 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); | |
4081 | if (ret_val) | |
4082 | return ret_val; | |
4083 | ret_val = put_user(cnow.rng, &p_cuser->rng); | |
4084 | if (ret_val) | |
4085 | return ret_val; | |
4086 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); | |
4087 | if (ret_val) | |
4088 | return ret_val; | |
4089 | ret_val = put_user(cnow.rx, &p_cuser->rx); | |
4090 | if (ret_val) | |
4091 | return ret_val; | |
4092 | ret_val = put_user(cnow.tx, &p_cuser->tx); | |
4093 | if (ret_val) | |
4094 | return ret_val; | |
4095 | ret_val = put_user(cnow.frame, &p_cuser->frame); | |
4096 | if (ret_val) | |
4097 | return ret_val; | |
4098 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); | |
4099 | if (ret_val) | |
4100 | return ret_val; | |
4101 | ret_val = put_user(cnow.parity, &p_cuser->parity); | |
4102 | if (ret_val) | |
4103 | return ret_val; | |
4104 | ret_val = put_user(cnow.brk, &p_cuser->brk); | |
4105 | if (ret_val) | |
4106 | return ret_val; | |
4107 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); | |
4108 | if (ret_val) | |
4109 | return ret_val; | |
4110 | ret_val = 0; | |
4111 | break; | |
4112 | default: | |
4113 | ret_val = -ENOIOCTLCMD; | |
4114 | } | |
1da177e4 LT |
4115 | |
4116 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4117 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 LT |
4118 | #endif |
4119 | ||
02f1175c JS |
4120 | return ret_val; |
4121 | } /* cy_ioctl */ | |
1da177e4 LT |
4122 | |
4123 | /* | |
4124 | * This routine allows the tty driver to be notified when | |
4125 | * device's termios settings have changed. Note that a | |
4126 | * well-designed tty driver should be prepared to accept the case | |
4127 | * where old == NULL, and try to do something rational. | |
4128 | */ | |
02f1175c | 4129 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 4130 | { |
cab9bdd1 | 4131 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
4132 | |
4133 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4134 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
4135 | #endif |
4136 | ||
02f1175c JS |
4137 | if (tty->termios->c_cflag == old_termios->c_cflag && |
4138 | (tty->termios->c_iflag & (IXON | IXANY)) == | |
4139 | (old_termios->c_iflag & (IXON | IXANY))) | |
4140 | return; | |
4141 | set_line_char(info); | |
4142 | ||
4143 | if ((old_termios->c_cflag & CRTSCTS) && | |
4144 | !(tty->termios->c_cflag & CRTSCTS)) { | |
4145 | tty->hw_stopped = 0; | |
4146 | cy_start(tty); | |
4147 | } | |
1da177e4 | 4148 | #if 0 |
02f1175c JS |
4149 | /* |
4150 | * No need to wake up processes in open wait, since they | |
4151 | * sample the CLOCAL flag once, and don't recheck it. | |
4152 | * XXX It's not clear whether the current behavior is correct | |
4153 | * or not. Hence, this may change..... | |
4154 | */ | |
4155 | if (!(old_termios->c_cflag & CLOCAL) && | |
4156 | (tty->termios->c_cflag & CLOCAL)) | |
4157 | wake_up_interruptible(&info->open_wait); | |
1da177e4 | 4158 | #endif |
02f1175c | 4159 | } /* cy_set_termios */ |
1da177e4 LT |
4160 | |
4161 | /* This function is used to send a high-priority XON/XOFF character to | |
4162 | the device. | |
4163 | */ | |
02f1175c | 4164 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 4165 | { |
cab9bdd1 | 4166 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
4167 | struct cyclades_card *card; |
4168 | int channel; | |
1da177e4 | 4169 | |
02f1175c | 4170 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
4171 | return; |
4172 | ||
02f1175c | 4173 | info->x_char = ch; |
1da177e4 LT |
4174 | |
4175 | if (ch) | |
02f1175c | 4176 | cy_start(tty); |
1da177e4 LT |
4177 | |
4178 | card = info->card; | |
875b206b | 4179 | channel = info->line - card->first_line; |
1da177e4 | 4180 | |
875b206b | 4181 | if (IS_CYC_Z(*card)) { |
02f1175c | 4182 | if (ch == STOP_CHAR(tty)) |
875b206b | 4183 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 4184 | else if (ch == START_CHAR(tty)) |
875b206b | 4185 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
4186 | } |
4187 | } | |
4188 | ||
4189 | /* This routine is called by the upper-layer tty layer to signal | |
4190 | that incoming characters should be throttled because the input | |
4191 | buffers are close to full. | |
4192 | */ | |
02f1175c | 4193 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 4194 | { |
cab9bdd1 | 4195 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4196 | struct cyclades_card *card; |
02f1175c JS |
4197 | unsigned long flags; |
4198 | void __iomem *base_addr; | |
875b206b | 4199 | int chip, channel, index; |
1da177e4 LT |
4200 | |
4201 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 4202 | char buf[64]; |
1da177e4 | 4203 | |
21719191 | 4204 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 4205 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
4206 | #endif |
4207 | ||
02f1175c JS |
4208 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) { |
4209 | return; | |
4210 | } | |
4211 | ||
4212 | card = info->card; | |
4213 | ||
4214 | if (I_IXOFF(tty)) { | |
875b206b | 4215 | if (!IS_CYC_Z(*card)) |
02f1175c JS |
4216 | cy_send_xchar(tty, STOP_CHAR(tty)); |
4217 | else | |
4218 | info->throttle = 1; | |
4219 | } | |
1da177e4 | 4220 | |
02f1175c | 4221 | if (tty->termios->c_cflag & CRTSCTS) { |
875b206b JS |
4222 | channel = info->line - card->first_line; |
4223 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
4224 | chip = channel >> 2; |
4225 | channel &= 0x03; | |
875b206b JS |
4226 | index = card->bus_index; |
4227 | base_addr = card->base_addr + | |
02f1175c JS |
4228 | (cy_chip_offset[chip] << index); |
4229 | ||
9fa1b3b1 | 4230 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
4231 | cy_writeb(base_addr + (CyCAR << index), |
4232 | (u_char) channel); | |
4233 | if (info->rtsdtr_inv) { | |
4234 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4235 | ~CyDTR); | |
4236 | } else { | |
4237 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4238 | ~CyRTS); | |
4239 | } | |
9fa1b3b1 | 4240 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4241 | } else { |
4242 | info->throttle = 1; | |
4243 | } | |
4244 | } | |
02f1175c | 4245 | } /* cy_throttle */ |
1da177e4 LT |
4246 | |
4247 | /* | |
4248 | * This routine notifies the tty driver that it should signal | |
4249 | * that characters can now be sent to the tty without fear of | |
4250 | * overrunning the input buffers of the line disciplines. | |
4251 | */ | |
02f1175c | 4252 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 4253 | { |
cab9bdd1 | 4254 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4255 | struct cyclades_card *card; |
02f1175c JS |
4256 | unsigned long flags; |
4257 | void __iomem *base_addr; | |
875b206b | 4258 | int chip, channel, index; |
1da177e4 LT |
4259 | |
4260 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
4261 | char buf[64]; |
4262 | ||
21719191 JS |
4263 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
4264 | tty_name(tty, buf), tty->ldisc.chars_in_buffer(tty),info->line); | |
1da177e4 LT |
4265 | #endif |
4266 | ||
02f1175c JS |
4267 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) { |
4268 | return; | |
4269 | } | |
1da177e4 | 4270 | |
02f1175c JS |
4271 | if (I_IXOFF(tty)) { |
4272 | if (info->x_char) | |
4273 | info->x_char = 0; | |
4274 | else | |
4275 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 4276 | } |
1da177e4 | 4277 | |
02f1175c JS |
4278 | if (tty->termios->c_cflag & CRTSCTS) { |
4279 | card = info->card; | |
875b206b JS |
4280 | channel = info->line - card->first_line; |
4281 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
4282 | chip = channel >> 2; |
4283 | channel &= 0x03; | |
875b206b JS |
4284 | index = card->bus_index; |
4285 | base_addr = card->base_addr + | |
02f1175c JS |
4286 | (cy_chip_offset[chip] << index); |
4287 | ||
9fa1b3b1 | 4288 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
4289 | cy_writeb(base_addr + (CyCAR << index), |
4290 | (u_char) channel); | |
4291 | if (info->rtsdtr_inv) { | |
4292 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4293 | CyDTR); | |
4294 | } else { | |
4295 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4296 | CyRTS); | |
4297 | } | |
9fa1b3b1 | 4298 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4299 | } else { |
4300 | info->throttle = 0; | |
4301 | } | |
4302 | } | |
02f1175c | 4303 | } /* cy_unthrottle */ |
1da177e4 LT |
4304 | |
4305 | /* cy_start and cy_stop provide software output flow control as a | |
4306 | function of XON/XOFF, software CTS, and other such stuff. | |
4307 | */ | |
02f1175c | 4308 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 4309 | { |
02f1175c | 4310 | struct cyclades_card *cinfo; |
cab9bdd1 | 4311 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4312 | void __iomem *base_addr; |
4313 | int chip, channel, index; | |
4314 | unsigned long flags; | |
1da177e4 LT |
4315 | |
4316 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4317 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
4318 | #endif |
4319 | ||
02f1175c JS |
4320 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
4321 | return; | |
1da177e4 | 4322 | |
875b206b | 4323 | cinfo = info->card; |
02f1175c JS |
4324 | channel = info->line - cinfo->first_line; |
4325 | if (!IS_CYC_Z(*cinfo)) { | |
4326 | index = cinfo->bus_index; | |
4327 | chip = channel >> 2; | |
4328 | channel &= 0x03; | |
9fa1b3b1 | 4329 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 4330 | |
9fa1b3b1 | 4331 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
4332 | cy_writeb(base_addr + (CyCAR << index), |
4333 | (u_char)(channel & 0x0003)); /* index channel */ | |
4334 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 4335 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
9fa1b3b1 | 4336 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 4337 | } |
02f1175c | 4338 | } /* cy_stop */ |
1da177e4 | 4339 | |
02f1175c | 4340 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 4341 | { |
02f1175c | 4342 | struct cyclades_card *cinfo; |
cab9bdd1 | 4343 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4344 | void __iomem *base_addr; |
4345 | int chip, channel, index; | |
4346 | unsigned long flags; | |
1da177e4 LT |
4347 | |
4348 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4349 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
4350 | #endif |
4351 | ||
02f1175c JS |
4352 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
4353 | return; | |
1da177e4 | 4354 | |
875b206b | 4355 | cinfo = info->card; |
02f1175c JS |
4356 | channel = info->line - cinfo->first_line; |
4357 | index = cinfo->bus_index; | |
4358 | if (!IS_CYC_Z(*cinfo)) { | |
4359 | chip = channel >> 2; | |
4360 | channel &= 0x03; | |
9fa1b3b1 | 4361 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 4362 | |
9fa1b3b1 | 4363 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
4364 | cy_writeb(base_addr + (CyCAR << index), (u_char) (channel & 0x0003)); /* index channel */ |
4365 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 4366 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 4367 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 4368 | } |
02f1175c | 4369 | } /* cy_start */ |
1da177e4 | 4370 | |
02f1175c | 4371 | static void cy_flush_buffer(struct tty_struct *tty) |
1da177e4 | 4372 | { |
cab9bdd1 | 4373 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
4374 | struct cyclades_card *card; |
4375 | int channel, retval; | |
02f1175c JS |
4376 | unsigned long flags; |
4377 | ||
1da177e4 | 4378 | #ifdef CY_DEBUG_IO |
21719191 | 4379 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); |
1da177e4 LT |
4380 | #endif |
4381 | ||
02f1175c JS |
4382 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) |
4383 | return; | |
1da177e4 | 4384 | |
02f1175c | 4385 | card = info->card; |
875b206b | 4386 | channel = info->line - card->first_line; |
1da177e4 | 4387 | |
9fa1b3b1 | 4388 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 4389 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
9fa1b3b1 | 4390 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 4391 | |
875b206b | 4392 | if (IS_CYC_Z(*card)) { /* If it is a Z card, flush the on-board |
02f1175c | 4393 | buffers as well */ |
9fa1b3b1 | 4394 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 4395 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); |
02f1175c | 4396 | if (retval != 0) { |
21719191 JS |
4397 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " |
4398 | "was %x\n", info->line, retval); | |
02f1175c | 4399 | } |
9fa1b3b1 | 4400 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4401 | } |
4402 | tty_wakeup(tty); | |
02f1175c | 4403 | } /* cy_flush_buffer */ |
1da177e4 LT |
4404 | |
4405 | /* | |
4406 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
4407 | */ | |
02f1175c | 4408 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 4409 | { |
cab9bdd1 | 4410 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 4411 | |
1da177e4 | 4412 | #ifdef CY_DEBUG_OTHER |
21719191 | 4413 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
4414 | #endif |
4415 | ||
02f1175c JS |
4416 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
4417 | return; | |
1da177e4 | 4418 | |
02f1175c JS |
4419 | cy_flush_buffer(tty); |
4420 | shutdown(info); | |
4421 | info->event = 0; | |
4422 | info->count = 0; | |
1da177e4 | 4423 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
4424 | printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n", |
4425 | current->pid); | |
1da177e4 | 4426 | #endif |
02f1175c JS |
4427 | info->tty = NULL; |
4428 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
4429 | wake_up_interruptible(&info->open_wait); | |
4430 | } /* cy_hangup */ | |
1da177e4 LT |
4431 | |
4432 | /* | |
4433 | * --------------------------------------------------------------------- | |
4434 | * cy_init() and friends | |
4435 | * | |
4436 | * cy_init() is called at boot-time to initialize the serial driver. | |
4437 | * --------------------------------------------------------------------- | |
4438 | */ | |
4439 | ||
875b206b | 4440 | static void __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
4441 | { |
4442 | struct cyclades_port *info; | |
4443 | u32 mailbox; | |
4444 | unsigned int nports; | |
4445 | unsigned short chip_number; | |
4446 | int index, port; | |
4447 | ||
3046d50e JS |
4448 | spin_lock_init(&cinfo->card_lock); |
4449 | ||
c2ad4c75 | 4450 | if (IS_CYC_Z(*cinfo)) { /* Cyclades-Z */ |
0809e267 JS |
4451 | mailbox = readl(&((struct RUNTIME_9060 __iomem *) |
4452 | cinfo->ctl_addr)->mail_box_0); | |
4453 | nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8; | |
4454 | cinfo->intr_enabled = 0; | |
4455 | cinfo->nports = 0; /* Will be correctly set later, after | |
4456 | Z FW is loaded */ | |
3046d50e JS |
4457 | } else { |
4458 | index = cinfo->bus_index; | |
4459 | nports = cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips; | |
4460 | } | |
4461 | ||
4462 | for (port = cinfo->first_line; port < cinfo->first_line + nports; | |
4463 | port++) { | |
4464 | info = &cy_port[port]; | |
4465 | memset(info, 0, sizeof(*info)); | |
4466 | info->magic = CYCLADES_MAGIC; | |
875b206b | 4467 | info->card = cinfo; |
3046d50e JS |
4468 | info->line = port; |
4469 | info->flags = STD_COM_FLAGS; | |
4470 | info->closing_wait = CLOSING_WAIT_DELAY; | |
4471 | info->close_delay = 5 * HZ / 10; | |
4472 | ||
4473 | INIT_WORK(&info->tqueue, do_softint); | |
4474 | init_waitqueue_head(&info->open_wait); | |
4475 | init_waitqueue_head(&info->close_wait); | |
2c7fea99 | 4476 | init_completion(&info->shutdown_wait); |
3046d50e JS |
4477 | init_waitqueue_head(&info->delta_msr_wait); |
4478 | ||
4479 | if (IS_CYC_Z(*cinfo)) { | |
0809e267 | 4480 | info->type = PORT_STARTECH; |
0809e267 JS |
4481 | if (mailbox == ZO_V1) |
4482 | info->xmit_fifo_size = CYZ_FIFO_SIZE; | |
4483 | else | |
3046d50e | 4484 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 4485 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
4486 | setup_timer(&cyz_rx_full_timer[port], |
4487 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 4488 | #endif |
3046d50e | 4489 | } else { |
0809e267 | 4490 | info->type = PORT_CIRRUS; |
0809e267 | 4491 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 4492 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
4493 | info->cor2 = CyETC; |
4494 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 4495 | |
0809e267 | 4496 | chip_number = (port - cinfo->first_line) / 4; |
3046d50e | 4497 | if ((info->chip_rev = readb(cinfo->base_addr + |
0809e267 JS |
4498 | (cy_chip_offset[chip_number] << |
4499 | index) + (CyGFRCR << index))) >= | |
4500 | CD1400_REV_J) { | |
4501 | /* It is a CD1400 rev. J or later */ | |
4502 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
4503 | info->tco = baud_co_60[13]; /* Tx CO */ | |
4504 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
4505 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
4506 | info->rtsdtr_inv = 1; |
4507 | } else { | |
4508 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
4509 | info->tco = baud_co_25[13]; /* Tx CO */ | |
4510 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
4511 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
4512 | info->rtsdtr_inv = 0; |
4513 | } | |
3046d50e JS |
4514 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
4515 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 4516 | } |
3046d50e | 4517 | |
0809e267 | 4518 | } |
3046d50e JS |
4519 | |
4520 | #ifndef CONFIG_CYZ_INTR | |
4521 | if (IS_CYC_Z(*cinfo) && !timer_pending(&cyz_timerlist)) { | |
4522 | mod_timer(&cyz_timerlist, jiffies + 1); | |
4523 | #ifdef CY_PCI_DEBUG | |
4524 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
4525 | #endif | |
4526 | } | |
4527 | #endif | |
0809e267 JS |
4528 | } |
4529 | ||
1da177e4 LT |
4530 | /* initialize chips on Cyclom-Y card -- return number of valid |
4531 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
4532 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
4533 | int index) | |
1da177e4 | 4534 | { |
02f1175c JS |
4535 | unsigned int chip_number; |
4536 | void __iomem *base_addr; | |
4537 | ||
4538 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
4539 | /* Cy_HwReset is 0x1400 */ | |
4540 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
4541 | /* Cy_ClrIntr is 0x1800 */ | |
4542 | udelay(500L); | |
4543 | ||
4544 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; chip_number++) { | |
4545 | base_addr = | |
4546 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
4547 | mdelay(1); | |
db05c3b1 | 4548 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
4549 | /************* |
4550 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
4551 | chip_number, (unsigned long)base_addr); | |
4552 | *************/ | |
4553 | return chip_number; | |
4554 | } | |
4555 | ||
4556 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
4557 | udelay(10L); | |
4558 | ||
4559 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
4560 | cannot distinguish between references to chip 0 and a non- | |
4561 | existent chip 4. If the preceding clearing of the supposed | |
4562 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
4563 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
4564 | */ | |
db05c3b1 | 4565 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
4566 | (cy_chip_offset[0] << index) + |
4567 | (CyGFRCR << index)) == 0) { | |
4568 | return chip_number; | |
4569 | } | |
4570 | ||
4571 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
4572 | mdelay(1); | |
4573 | ||
db05c3b1 | 4574 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
4575 | /* |
4576 | printk(" chip #%d at %#6lx is not responding ", | |
4577 | chip_number, (unsigned long)base_addr); | |
4578 | printk("(GFRCR stayed 0)\n", | |
4579 | */ | |
4580 | return chip_number; | |
4581 | } | |
db05c3b1 | 4582 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
4583 | 0x40) { |
4584 | /* | |
4585 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
4586 | "%#2x)\n", | |
4587 | chip_number, (unsigned long)base_addr, | |
4588 | base_addr[CyGFRCR<<index]); | |
4589 | */ | |
4590 | return chip_number; | |
4591 | } | |
4592 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 4593 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
4594 | /* It is a CD1400 rev. J or later */ |
4595 | /* Impossible to reach 5ms with this chip. | |
4596 | Changed to 2ms instead (f = 500 Hz). */ | |
4597 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
4598 | } else { | |
4599 | /* f = 200 Hz */ | |
4600 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
4601 | } | |
1da177e4 | 4602 | |
02f1175c JS |
4603 | /* |
4604 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
4605 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 4606 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
4607 | */ |
4608 | } | |
4609 | return chip_number; | |
4610 | } /* cyy_init_card */ | |
1da177e4 LT |
4611 | |
4612 | /* | |
4613 | * --------------------------------------------------------------------- | |
4614 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
4615 | * sets global variables and return the number of ISA boards found. | |
4616 | * --------------------------------------------------------------------- | |
4617 | */ | |
02f1175c | 4618 | static int __init cy_detect_isa(void) |
1da177e4 LT |
4619 | { |
4620 | #ifdef CONFIG_ISA | |
02f1175c JS |
4621 | unsigned short cy_isa_irq, nboard; |
4622 | void __iomem *cy_isa_address; | |
4623 | unsigned short i, j, cy_isa_nchan; | |
1da177e4 | 4624 | #ifdef MODULE |
02f1175c | 4625 | int isparam = 0; |
1da177e4 LT |
4626 | #endif |
4627 | ||
02f1175c | 4628 | nboard = 0; |
1da177e4 LT |
4629 | |
4630 | #ifdef MODULE | |
4631 | /* Check for module parameters */ | |
02f1175c JS |
4632 | for (i = 0; i < NR_CARDS; i++) { |
4633 | if (maddr[i] || i) { | |
4634 | isparam = 1; | |
4635 | cy_isa_addresses[i] = maddr[i]; | |
4636 | } | |
4637 | if (!maddr[i]) | |
4638 | break; | |
1da177e4 LT |
4639 | } |
4640 | #endif | |
4641 | ||
02f1175c JS |
4642 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
4643 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
4644 | unsigned int isa_address = cy_isa_addresses[i]; | |
4645 | if (isa_address == 0x0000) { | |
096dcfce | 4646 | return nboard; |
02f1175c | 4647 | } |
1da177e4 | 4648 | |
02f1175c | 4649 | /* probe for CD1400... */ |
1da177e4 | 4650 | cy_isa_address = ioremap(isa_address, CyISA_Ywin); |
02f1175c JS |
4651 | cy_isa_nchan = CyPORTS_PER_CHIP * |
4652 | cyy_init_card(cy_isa_address, 0); | |
4653 | if (cy_isa_nchan == 0) { | |
4654 | continue; | |
4655 | } | |
1da177e4 LT |
4656 | #ifdef MODULE |
4657 | if (isparam && irq[i]) | |
02f1175c | 4658 | cy_isa_irq = irq[i]; |
1da177e4 LT |
4659 | else |
4660 | #endif | |
02f1175c JS |
4661 | /* find out the board's irq by probing */ |
4662 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
4663 | if (cy_isa_irq == 0) { | |
21719191 JS |
4664 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
4665 | "IRQ could not be detected.\n", | |
02f1175c | 4666 | (unsigned long)cy_isa_address); |
02f1175c JS |
4667 | continue; |
4668 | } | |
4669 | ||
4670 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
4671 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4672 | "more channels are available. Change NR_PORTS " | |
4673 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 4674 | (unsigned long)cy_isa_address); |
096dcfce | 4675 | return nboard; |
02f1175c JS |
4676 | } |
4677 | /* fill the next cy_card structure available */ | |
4678 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 4679 | if (cy_card[j].base_addr == NULL) |
02f1175c JS |
4680 | break; |
4681 | } | |
4682 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
4683 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4684 | "more cards can be used. Change NR_CARDS in " | |
4685 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 4686 | (unsigned long)cy_isa_address); |
096dcfce | 4687 | return nboard; |
02f1175c JS |
4688 | } |
4689 | ||
4690 | /* allocate IRQ */ | |
4691 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
4692 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
4693 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
4694 | "could not allocate IRQ#%d.\n", | |
4695 | (unsigned long)cy_isa_address, cy_isa_irq); | |
096dcfce | 4696 | return nboard; |
02f1175c JS |
4697 | } |
4698 | ||
4699 | /* set cy_card */ | |
4700 | cy_card[j].base_addr = cy_isa_address; | |
4701 | cy_card[j].ctl_addr = NULL; | |
4702 | cy_card[j].irq = (int)cy_isa_irq; | |
4703 | cy_card[j].bus_index = 0; | |
4704 | cy_card[j].first_line = cy_next_channel; | |
4705 | cy_card[j].num_chips = cy_isa_nchan / 4; | |
875b206b | 4706 | cy_init_card(&cy_card[j]); |
02f1175c JS |
4707 | nboard++; |
4708 | ||
21719191 JS |
4709 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
4710 | "%d channels starting from port %d\n", | |
02f1175c JS |
4711 | j + 1, (unsigned long)cy_isa_address, |
4712 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
4713 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
4714 | ||
6ad1ccc1 JS |
4715 | for (j = cy_next_channel; |
4716 | j < cy_next_channel + cy_isa_nchan; j++) | |
4717 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
4718 | cy_next_channel += cy_isa_nchan; |
4719 | } | |
096dcfce | 4720 | return nboard; |
1da177e4 | 4721 | #else |
096dcfce | 4722 | return 0; |
02f1175c JS |
4723 | #endif /* CONFIG_ISA */ |
4724 | } /* cy_detect_isa */ | |
1da177e4 | 4725 | |
58936d8d JS |
4726 | #ifdef CONFIG_PCI |
4727 | static void __devinit plx_init(void __iomem * addr, __u32 initctl) | |
1da177e4 | 4728 | { |
02f1175c | 4729 | /* Reset PLX */ |
db05c3b1 | 4730 | cy_writel(addr + initctl, readl(addr + initctl) | 0x40000000); |
02f1175c | 4731 | udelay(100L); |
db05c3b1 | 4732 | cy_writel(addr + initctl, readl(addr + initctl) & ~0x40000000); |
02f1175c JS |
4733 | |
4734 | /* Reload Config. Registers from EEPROM */ | |
db05c3b1 | 4735 | cy_writel(addr + initctl, readl(addr + initctl) | 0x20000000); |
02f1175c | 4736 | udelay(100L); |
db05c3b1 | 4737 | cy_writel(addr + initctl, readl(addr + initctl) & ~0x20000000); |
1da177e4 LT |
4738 | } |
4739 | ||
6d8248e8 | 4740 | static int __devinit cy_init_Ze(struct RUNTIME_9060 __iomem *cy_pci_addr0, |
2b1da41f | 4741 | int cy_pci_irq, struct pci_dev *pdev) |
d407c781 | 4742 | { |
2b1da41f | 4743 | void __iomem *cy_pci_addr2; |
d407c781 JS |
4744 | unsigned int j; |
4745 | unsigned short cy_pci_nchan; | |
4746 | ||
2b1da41f JS |
4747 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ze_win); |
4748 | ||
d407c781 | 4749 | readl(&cy_pci_addr0->mail_box_0); |
21719191 JS |
4750 | dev_dbg(&pdev->dev, "new Cyclades-Z board. FPGA not loaded\n"); |
4751 | ||
d407c781 JS |
4752 | /* This must be the new Cyclades-Ze/PCI. */ |
4753 | cy_pci_nchan = ZE_V1_NPORTS; | |
4754 | ||
4755 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { | |
21719191 | 4756 | dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no channels " |
d407c781 | 4757 | "are available.\nChange NR_PORTS in cyclades.c " |
21719191 | 4758 | "and recompile kernel.\n"); |
d407c781 JS |
4759 | return -EIO; |
4760 | } | |
4761 | ||
4762 | /* fill the next cy_card structure available */ | |
4763 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 4764 | if (cy_card[j].base_addr == NULL) |
d407c781 JS |
4765 | break; |
4766 | } | |
4767 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 | 4768 | dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no more " |
d407c781 | 4769 | "cards can be used.\nChange NR_CARDS in " |
21719191 | 4770 | "cyclades.c and recompile kernel.\n"); |
d407c781 JS |
4771 | return -EIO; |
4772 | } | |
4773 | #ifdef CONFIG_CYZ_INTR | |
4774 | /* allocate IRQ only if board has an IRQ */ | |
4775 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { | |
4776 | if (request_irq(cy_pci_irq, cyz_interrupt, | |
4777 | IRQF_SHARED, "Cyclades-Z", | |
4778 | &cy_card[j])) { | |
21719191 | 4779 | dev_err(&pdev->dev, "could not allocate IRQ.\n"); |
d407c781 JS |
4780 | return -EIO; |
4781 | } | |
4782 | } | |
4783 | #endif /* CONFIG_CYZ_INTR */ | |
4784 | ||
4785 | /* set cy_card */ | |
d407c781 JS |
4786 | cy_card[j].base_addr = cy_pci_addr2; |
4787 | cy_card[j].ctl_addr = cy_pci_addr0; | |
80fada50 | 4788 | cy_card[j].irq = cy_pci_irq; |
d407c781 JS |
4789 | cy_card[j].bus_index = 1; |
4790 | cy_card[j].first_line = cy_next_channel; | |
4791 | cy_card[j].num_chips = -1; | |
875b206b | 4792 | cy_init_card(&cy_card[j]); |
38d09093 | 4793 | pci_set_drvdata(pdev, &cy_card[j]); |
d407c781 | 4794 | |
21719191 JS |
4795 | dev_info(&pdev->dev, "Cyclades-Ze/PCI #%d found: %d channels starting " |
4796 | "from port %d.\n", j + 1, cy_pci_nchan, cy_next_channel); | |
d407c781 | 4797 | |
6ad1ccc1 JS |
4798 | for (j = cy_next_channel; j < cy_next_channel + cy_pci_nchan; j++) |
4799 | tty_register_device(cy_serial_driver, j, &pdev->dev); | |
d407c781 JS |
4800 | cy_next_channel += cy_pci_nchan; |
4801 | ||
4802 | return 0; | |
4803 | } | |
4804 | ||
58936d8d JS |
4805 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
4806 | const struct pci_device_id *ent) | |
1da177e4 | 4807 | { |
02f1175c | 4808 | unsigned char cyy_rev_id; |
80fada50 | 4809 | int cy_pci_irq; |
6d8248e8 | 4810 | __u32 mailbox; |
02f1175c | 4811 | void __iomem *cy_pci_addr0, *cy_pci_addr2; |
58936d8d JS |
4812 | unsigned int device_id; |
4813 | unsigned short j, cy_pci_nchan, plx_ver; | |
d407c781 | 4814 | int retval; |
02f1175c | 4815 | |
58936d8d JS |
4816 | retval = pci_enable_device(pdev); |
4817 | if (retval) { | |
4818 | dev_err(&pdev->dev, "cannot enable device\n"); | |
4819 | return retval; | |
4820 | } | |
1da177e4 | 4821 | |
58936d8d JS |
4822 | /* read PCI configuration area */ |
4823 | cy_pci_irq = pdev->irq; | |
58936d8d | 4824 | pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id); |
1da177e4 | 4825 | |
58936d8d | 4826 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 4827 | |
58936d8d JS |
4828 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
4829 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
21719191 | 4830 | dev_dbg(&pdev->dev, "Cyclom-Y/PCI found\n"); |
1da177e4 | 4831 | |
58936d8d | 4832 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
21719191 | 4833 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly " |
58936d8d JS |
4834 | "set. Ignoring it...\n"); |
4835 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
4836 | } | |
1da177e4 | 4837 | |
58936d8d JS |
4838 | /* Although we don't use this I/O region, we should |
4839 | request it from the kernel anyway, to avoid problems | |
4840 | with other drivers accessing it. */ | |
4841 | retval = pci_request_regions(pdev, "Cyclom-Y"); | |
4842 | if (retval) { | |
21719191 | 4843 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
58936d8d JS |
4844 | return retval; |
4845 | } | |
4846 | #if defined(__alpha__) | |
4847 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
21719191 JS |
4848 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for " |
4849 | "low addresses on Alpha systems.\n"); | |
58936d8d JS |
4850 | return -EIO; |
4851 | } | |
1da177e4 | 4852 | #endif |
58936d8d JS |
4853 | cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Yctl); |
4854 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ywin); | |
1da177e4 | 4855 | |
21719191 JS |
4856 | dev_dbg(&pdev->dev, "Cyclom-Y/PCI: relocate winaddr=0x%p " |
4857 | "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0); | |
4858 | ||
58936d8d JS |
4859 | cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP * |
4860 | cyy_init_card(cy_pci_addr2, 1)); | |
4861 | if (cy_pci_nchan == 0) { | |
21719191 JS |
4862 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
4863 | "Serial-Modules\n"); | |
58936d8d JS |
4864 | return -EIO; |
4865 | } | |
4866 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { | |
21719191 JS |
4867 | dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no " |
4868 | "channels are available. Change NR_PORTS in " | |
4869 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
4870 | return -EIO; |
4871 | } | |
4872 | /* fill the next cy_card structure available */ | |
4873 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 4874 | if (cy_card[j].base_addr == NULL) |
02f1175c | 4875 | break; |
58936d8d JS |
4876 | } |
4877 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
4878 | dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no more " |
4879 | "cards can be used. Change NR_CARDS in " | |
4880 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
4881 | return -EIO; |
4882 | } | |
02f1175c | 4883 | |
58936d8d JS |
4884 | /* allocate IRQ */ |
4885 | retval = request_irq(cy_pci_irq, cyy_interrupt, | |
4886 | IRQF_SHARED, "Cyclom-Y", &cy_card[j]); | |
4887 | if (retval) { | |
21719191 | 4888 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
58936d8d JS |
4889 | return retval; |
4890 | } | |
02f1175c | 4891 | |
58936d8d | 4892 | /* set cy_card */ |
58936d8d JS |
4893 | cy_card[j].base_addr = cy_pci_addr2; |
4894 | cy_card[j].ctl_addr = cy_pci_addr0; | |
80fada50 | 4895 | cy_card[j].irq = cy_pci_irq; |
58936d8d JS |
4896 | cy_card[j].bus_index = 1; |
4897 | cy_card[j].first_line = cy_next_channel; | |
4898 | cy_card[j].num_chips = cy_pci_nchan / 4; | |
875b206b | 4899 | cy_init_card(&cy_card[j]); |
58936d8d | 4900 | pci_set_drvdata(pdev, &cy_card[j]); |
02f1175c | 4901 | |
58936d8d JS |
4902 | /* enable interrupts in the PCI interface */ |
4903 | plx_ver = readb(cy_pci_addr2 + CyPLX_VER) & 0x0f; | |
4904 | switch (plx_ver) { | |
4905 | case PLX_9050: | |
4906 | ||
4907 | cy_writeb(cy_pci_addr0 + 0x4c, 0x43); | |
02f1175c | 4908 | break; |
02f1175c | 4909 | |
58936d8d JS |
4910 | case PLX_9060: |
4911 | case PLX_9080: | |
4912 | default: /* Old boards, use PLX_9060 */ | |
02f1175c JS |
4913 | |
4914 | plx_init(cy_pci_addr0, 0x6c); | |
58936d8d JS |
4915 | /* For some yet unknown reason, once the PLX9060 reloads |
4916 | the EEPROM, the IRQ is lost and, thus, we have to | |
4917 | re-write it to the PCI config. registers. | |
4918 | This will remain here until we find a permanent | |
4919 | fix. */ | |
02f1175c | 4920 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, |
58936d8d | 4921 | cy_pci_irq); |
02f1175c | 4922 | |
58936d8d JS |
4923 | cy_writew(cy_pci_addr0 + 0x68, |
4924 | readw(cy_pci_addr0 + 0x68) | 0x0900); | |
4925 | break; | |
4926 | } | |
02f1175c | 4927 | |
21719191 JS |
4928 | dev_info(&pdev->dev, "Cyclom-Y/PCI #%d found: %d channels " |
4929 | "starting from port %d.\n", j + 1, cy_pci_nchan, | |
4930 | cy_next_channel); | |
4931 | ||
6ad1ccc1 JS |
4932 | for (j = cy_next_channel; |
4933 | j < cy_next_channel + cy_pci_nchan; j++) | |
4934 | tty_register_device(cy_serial_driver, j, &pdev->dev); | |
1da177e4 | 4935 | |
58936d8d JS |
4936 | cy_next_channel += cy_pci_nchan; |
4937 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
21719191 JS |
4938 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for " |
4939 | "low addresses\n"); | |
58936d8d JS |
4940 | return -EIO; |
4941 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { | |
21719191 JS |
4942 | dev_dbg(&pdev->dev, "Cyclades-Z/PCI found\n"); |
4943 | ||
58936d8d JS |
4944 | cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Zctl); |
4945 | ||
4946 | /* Disable interrupts on the PLX before resetting it */ | |
4947 | cy_writew(cy_pci_addr0 + 0x68, | |
4948 | readw(cy_pci_addr0 + 0x68) & ~0x0900); | |
4949 | ||
4950 | plx_init(cy_pci_addr0, 0x6c); | |
4951 | /* For some yet unknown reason, once the PLX9060 reloads | |
4952 | the EEPROM, the IRQ is lost and, thus, we have to | |
4953 | re-write it to the PCI config. registers. | |
4954 | This will remain here until we find a permanent | |
4955 | fix. */ | |
80fada50 | 4956 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); |
02f1175c | 4957 | |
58936d8d JS |
4958 | mailbox = (__u32)readl(&((struct RUNTIME_9060 __iomem *) |
4959 | cy_pci_addr0)->mail_box_0); | |
4960 | ||
4961 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
21719191 | 4962 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly " |
58936d8d JS |
4963 | "set. Ignoring it...\n"); |
4964 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
4965 | } | |
4966 | ||
4967 | /* Although we don't use this I/O region, we should | |
4968 | request it from the kernel anyway, to avoid problems | |
4969 | with other drivers accessing it. */ | |
4970 | retval = pci_request_regions(pdev, "Cyclades-Z"); | |
4971 | if (retval) { | |
21719191 | 4972 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
58936d8d JS |
4973 | return retval; |
4974 | } | |
4975 | ||
4976 | if (mailbox == ZE_V1) { | |
6d8248e8 | 4977 | retval = cy_init_Ze(cy_pci_addr0, cy_pci_irq, pdev); |
58936d8d JS |
4978 | return retval; |
4979 | } else { | |
4980 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Zwin); | |
4981 | } | |
1da177e4 | 4982 | |
21719191 JS |
4983 | dev_dbg(&pdev->dev, "Cyclades-Z/PCI: relocate winaddr=0x%p " |
4984 | "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0); | |
1da177e4 | 4985 | #ifdef CY_PCI_DEBUG |
58936d8d JS |
4986 | if (mailbox == ZO_V1) { |
4987 | cy_writel(&((struct RUNTIME_9060 *) | |
4988 | (cy_pci_addr0))->loc_addr_base, | |
4989 | WIN_CREG); | |
21719191 JS |
4990 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA id %lx, " |
4991 | "ver %lx\n", (ulong)(0xff & | |
58936d8d | 4992 | readl(&((struct CUSTOM_REG *) |
21719191 JS |
4993 | cy_pci_addr2)->fpga_id)), |
4994 | (ulong)(0xff & readl(&((struct CUSTOM_REG *) | |
4995 | cy_pci_addr2)->fpga_version))); | |
58936d8d | 4996 | cy_writel(&((struct RUNTIME_9060 *) |
21719191 | 4997 | cy_pci_addr0)->loc_addr_base, WIN_RAM); |
58936d8d | 4998 | } else { |
21719191 JS |
4999 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New Cyclades-Z " |
5000 | "board. FPGA not loaded\n"); | |
58936d8d | 5001 | } |
1da177e4 | 5002 | #endif |
58936d8d JS |
5003 | /* The following clears the firmware id word. This |
5004 | ensures that the driver will not attempt to talk to | |
5005 | the board until it has been properly initialized. | |
5006 | */ | |
5007 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
5008 | cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L); | |
5009 | ||
5010 | /* This must be a Cyclades-8Zo/PCI. The extendable | |
5011 | version will have a different device_id and will | |
5012 | be allocated its maximum number of ports. */ | |
5013 | cy_pci_nchan = 8; | |
5014 | ||
5015 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { | |
21719191 JS |
5016 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
5017 | "channels are available. Change NR_PORTS in " | |
5018 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
5019 | return -EIO; |
5020 | } | |
1da177e4 | 5021 | |
58936d8d JS |
5022 | /* fill the next cy_card structure available */ |
5023 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 5024 | if (cy_card[j].base_addr == NULL) |
58936d8d JS |
5025 | break; |
5026 | } | |
5027 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
5028 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
5029 | "more cards can be used. Change NR_CARDS in " | |
5030 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
5031 | return -EIO; |
5032 | } | |
02f1175c | 5033 | #ifdef CONFIG_CYZ_INTR |
58936d8d JS |
5034 | /* allocate IRQ only if board has an IRQ */ |
5035 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { | |
5036 | retval = request_irq(cy_pci_irq, cyz_interrupt, | |
5037 | IRQF_SHARED, "Cyclades-Z", | |
5038 | &cy_card[j]); | |
5039 | if (retval) { | |
21719191 | 5040 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
58936d8d | 5041 | return retval; |
02f1175c | 5042 | } |
58936d8d | 5043 | } |
02f1175c JS |
5044 | #endif /* CONFIG_CYZ_INTR */ |
5045 | ||
58936d8d | 5046 | /* set cy_card */ |
58936d8d JS |
5047 | cy_card[j].base_addr = cy_pci_addr2; |
5048 | cy_card[j].ctl_addr = cy_pci_addr0; | |
80fada50 | 5049 | cy_card[j].irq = cy_pci_irq; |
58936d8d JS |
5050 | cy_card[j].bus_index = 1; |
5051 | cy_card[j].first_line = cy_next_channel; | |
5052 | cy_card[j].num_chips = -1; | |
875b206b | 5053 | cy_init_card(&cy_card[j]); |
58936d8d JS |
5054 | pci_set_drvdata(pdev, &cy_card[j]); |
5055 | ||
21719191 JS |
5056 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI #%d found: %d channels " |
5057 | "starting from port %d.\n", j + 1, cy_pci_nchan, | |
5058 | cy_next_channel); | |
58936d8d | 5059 | |
6ad1ccc1 JS |
5060 | for (j = cy_next_channel; |
5061 | j < cy_next_channel + cy_pci_nchan; j++) | |
5062 | tty_register_device(cy_serial_driver, j, &pdev->dev); | |
58936d8d JS |
5063 | cy_next_channel += cy_pci_nchan; |
5064 | } | |
5065 | ||
5066 | return 0; | |
5067 | } | |
58936d8d | 5068 | |
6747cd93 | 5069 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 5070 | { |
38d09093 | 5071 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 5072 | unsigned int i; |
38d09093 | 5073 | |
85c93fa9 | 5074 | /* non-Z with old PLX */ |
c2ad4c75 JS |
5075 | if (!IS_CYC_Z(*cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
5076 | PLX_9050) | |
85c93fa9 JS |
5077 | cy_writeb(cinfo->ctl_addr + 0x4c, 0); |
5078 | else | |
5079 | #ifndef CONFIG_CYZ_INTR | |
c2ad4c75 | 5080 | if (!IS_CYC_Z(*cinfo)) |
85c93fa9 JS |
5081 | #endif |
5082 | cy_writew(cinfo->ctl_addr + 0x68, | |
5083 | readw(cinfo->ctl_addr + 0x68) & ~0x0900); | |
5084 | ||
38d09093 JS |
5085 | pci_iounmap(pdev, cinfo->base_addr); |
5086 | if (cinfo->ctl_addr) | |
5087 | pci_iounmap(pdev, cinfo->ctl_addr); | |
5088 | if (cinfo->irq | |
5089 | #ifndef CONFIG_CYZ_INTR | |
c2ad4c75 | 5090 | && !IS_CYC_Z(*cinfo) |
38d09093 JS |
5091 | #endif /* CONFIG_CYZ_INTR */ |
5092 | ) | |
5093 | free_irq(cinfo->irq, cinfo); | |
5094 | pci_release_regions(pdev); | |
5095 | ||
5096 | cinfo->base_addr = NULL; | |
f3851e73 JS |
5097 | for (i = cinfo->first_line; i < cinfo->first_line + cinfo->nports; i++){ |
5098 | cy_port[i].line = -1; | |
5099 | cy_port[i].magic = -1; | |
5100 | } | |
6ad1ccc1 JS |
5101 | for (i = cinfo->first_line; i < cinfo->first_line + |
5102 | cinfo->nports; i++) | |
5103 | tty_unregister_device(cy_serial_driver, i); | |
38d09093 JS |
5104 | } |
5105 | ||
6747cd93 JS |
5106 | static struct pci_driver cy_pci_driver = { |
5107 | .name = "cyclades", | |
5108 | .id_table = cy_pci_dev_id, | |
5109 | .probe = cy_pci_probe, | |
5110 | .remove = __devexit_p(cy_pci_remove) | |
5111 | }; | |
5112 | #endif | |
5113 | ||
02f1175c | 5114 | static int |
1da177e4 | 5115 | cyclades_get_proc_info(char *buf, char **start, off_t offset, int length, |
02f1175c | 5116 | int *eof, void *data) |
1da177e4 | 5117 | { |
02f1175c JS |
5118 | struct cyclades_port *info; |
5119 | int i; | |
5120 | int len = 0; | |
5121 | off_t begin = 0; | |
5122 | off_t pos = 0; | |
5123 | int size; | |
5124 | __u32 cur_jifs = jiffies; | |
5125 | ||
5126 | size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn " | |
5127 | "IdleIn Overruns Ldisc\n"); | |
5128 | ||
5129 | pos += size; | |
1da177e4 | 5130 | len += size; |
1da177e4 | 5131 | |
02f1175c JS |
5132 | /* Output one line for each known port */ |
5133 | for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) { | |
5134 | info = &cy_port[i]; | |
5135 | ||
5136 | if (info->count) | |
5137 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " | |
5138 | "%8lu %9lu %6ld\n", info->line, | |
096dcfce | 5139 | (cur_jifs - info->idle_stats.in_use) / HZ, |
02f1175c | 5140 | info->idle_stats.xmit_bytes, |
096dcfce | 5141 | (cur_jifs - info->idle_stats.xmit_idle) / HZ, |
02f1175c | 5142 | info->idle_stats.recv_bytes, |
096dcfce | 5143 | (cur_jifs - info->idle_stats.recv_idle) / HZ, |
02f1175c JS |
5144 | info->idle_stats.overruns, |
5145 | (long)info->tty->ldisc.num); | |
5146 | else | |
5147 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " | |
5148 | "%8lu %9lu %6ld\n", | |
5149 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
5150 | len += size; | |
5151 | pos = begin + len; | |
5152 | ||
5153 | if (pos < offset) { | |
5154 | len = 0; | |
5155 | begin = pos; | |
5156 | } | |
5157 | if (pos > offset + length) | |
5158 | goto done; | |
1da177e4 | 5159 | } |
02f1175c | 5160 | *eof = 1; |
1da177e4 | 5161 | done: |
02f1175c JS |
5162 | *start = buf + (offset - begin); /* Start of wanted data */ |
5163 | len -= (offset - begin); /* Start slop */ | |
5164 | if (len > length) | |
5165 | len = length; /* Ending slop */ | |
5166 | if (len < 0) | |
5167 | len = 0; | |
5168 | return len; | |
1da177e4 LT |
5169 | } |
5170 | ||
5171 | /* The serial driver boot-time initialization code! | |
5172 | Hardware I/O ports are mapped to character special devices on a | |
5173 | first found, first allocated manner. That is, this code searches | |
5174 | for Cyclom cards in the system. As each is found, it is probed | |
5175 | to discover how many chips (and thus how many ports) are present. | |
5176 | These ports are mapped to the tty ports 32 and upward in monotonic | |
5177 | fashion. If an 8-port card is replaced with a 16-port card, the | |
5178 | port mapping on a following card will shift. | |
5179 | ||
5180 | This approach is different from what is used in the other serial | |
5181 | device driver because the Cyclom is more properly a multiplexer, | |
5182 | not just an aggregation of serial ports on one card. | |
5183 | ||
5184 | If there are more cards with more ports than have been | |
5185 | statically allocated above, a warning is printed and the | |
5186 | extra ports are ignored. | |
5187 | */ | |
5188 | ||
b68e31d0 | 5189 | static const struct tty_operations cy_ops = { |
02f1175c JS |
5190 | .open = cy_open, |
5191 | .close = cy_close, | |
5192 | .write = cy_write, | |
5193 | .put_char = cy_put_char, | |
5194 | .flush_chars = cy_flush_chars, | |
5195 | .write_room = cy_write_room, | |
5196 | .chars_in_buffer = cy_chars_in_buffer, | |
5197 | .flush_buffer = cy_flush_buffer, | |
5198 | .ioctl = cy_ioctl, | |
5199 | .throttle = cy_throttle, | |
5200 | .unthrottle = cy_unthrottle, | |
5201 | .set_termios = cy_set_termios, | |
5202 | .stop = cy_stop, | |
5203 | .start = cy_start, | |
5204 | .hangup = cy_hangup, | |
5205 | .break_ctl = cy_break, | |
5206 | .wait_until_sent = cy_wait_until_sent, | |
5207 | .read_proc = cyclades_get_proc_info, | |
5208 | .tiocmget = cy_tiocmget, | |
5209 | .tiocmset = cy_tiocmset, | |
1da177e4 LT |
5210 | }; |
5211 | ||
02f1175c | 5212 | static int __init cy_init(void) |
1da177e4 | 5213 | { |
14a55a67 | 5214 | unsigned int i, nboards; |
9dacf3b2 | 5215 | int retval = -ENOMEM; |
02f1175c JS |
5216 | |
5217 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
5218 | if (!cy_serial_driver) | |
9dacf3b2 | 5219 | goto err; |
21719191 JS |
5220 | |
5221 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", | |
5222 | __DATE__, __TIME__); | |
02f1175c JS |
5223 | |
5224 | /* Initialize the tty_driver structure */ | |
5225 | ||
5226 | cy_serial_driver->owner = THIS_MODULE; | |
5227 | cy_serial_driver->driver_name = "cyclades"; | |
5228 | cy_serial_driver->name = "ttyC"; | |
5229 | cy_serial_driver->major = CYCLADES_MAJOR; | |
5230 | cy_serial_driver->minor_start = 0; | |
5231 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
5232 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
5233 | cy_serial_driver->init_termios = tty_std_termios; | |
5234 | cy_serial_driver->init_termios.c_cflag = | |
5235 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 5236 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
5237 | tty_set_operations(cy_serial_driver, &cy_ops); |
5238 | ||
9dacf3b2 JS |
5239 | retval = tty_register_driver(cy_serial_driver); |
5240 | if (retval) { | |
5241 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
5242 | goto err_frtty; | |
5243 | } | |
02f1175c | 5244 | |
f3851e73 JS |
5245 | for (i = 0; i < NR_PORTS; i++) { |
5246 | cy_port[i].line = -1; | |
5247 | cy_port[i].magic = -1; | |
5248 | } | |
5249 | ||
02f1175c JS |
5250 | /* the code below is responsible to find the boards. Each different |
5251 | type of board has its own detection routine. If a board is found, | |
5252 | the next cy_card structure available is set by the detection | |
5253 | routine. These functions are responsible for checking the | |
5254 | availability of cy_card and cy_port data structures and updating | |
5255 | the cy_next_channel. */ | |
5256 | ||
5257 | /* look for isa boards */ | |
14a55a67 | 5258 | nboards = cy_detect_isa(); |
02f1175c | 5259 | |
6747cd93 | 5260 | #ifdef CONFIG_PCI |
02f1175c | 5261 | /* look for pci boards */ |
6747cd93 JS |
5262 | retval = pci_register_driver(&cy_pci_driver); |
5263 | if (retval && !nboards) | |
9dacf3b2 | 5264 | goto err_unr; |
6747cd93 | 5265 | #endif |
9dacf3b2 JS |
5266 | |
5267 | return 0; | |
5268 | err_unr: | |
5269 | tty_unregister_driver(cy_serial_driver); | |
5270 | err_frtty: | |
5271 | put_tty_driver(cy_serial_driver); | |
5272 | err: | |
5273 | return retval; | |
02f1175c | 5274 | } /* cy_init */ |
1da177e4 | 5275 | |
02f1175c | 5276 | static void __exit cy_cleanup_module(void) |
1da177e4 | 5277 | { |
02f1175c | 5278 | int i, e1; |
1da177e4 LT |
5279 | |
5280 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 5281 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
5282 | #endif /* CONFIG_CYZ_INTR */ |
5283 | ||
02f1175c | 5284 | if ((e1 = tty_unregister_driver(cy_serial_driver))) |
21719191 JS |
5285 | printk(KERN_ERR "failed to unregister Cyclades serial " |
5286 | "driver(%d)\n", e1); | |
1da177e4 | 5287 | |
6747cd93 JS |
5288 | #ifdef CONFIG_PCI |
5289 | pci_unregister_driver(&cy_pci_driver); | |
5290 | #endif | |
5291 | ||
02f1175c JS |
5292 | for (i = 0; i < NR_CARDS; i++) { |
5293 | if (cy_card[i].base_addr) { | |
85c93fa9 JS |
5294 | /* clear interrupt */ |
5295 | cy_writeb(cy_card[i].base_addr + Cy_ClrIntr, 0); | |
02f1175c JS |
5296 | iounmap(cy_card[i].base_addr); |
5297 | if (cy_card[i].ctl_addr) | |
5298 | iounmap(cy_card[i].ctl_addr); | |
5299 | if (cy_card[i].irq | |
1da177e4 | 5300 | #ifndef CONFIG_CYZ_INTR |
c2ad4c75 | 5301 | && !IS_CYC_Z(cy_card[i]) |
1da177e4 | 5302 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c JS |
5303 | ) |
5304 | free_irq(cy_card[i].irq, &cy_card[i]); | |
6ad1ccc1 JS |
5305 | for (e1 = cy_card[i].first_line; |
5306 | e1 < cy_card[i].first_line + | |
5307 | cy_card[i].nports; e1++) | |
5308 | tty_unregister_device(cy_serial_driver, e1); | |
02f1175c JS |
5309 | } |
5310 | } | |
f2462bfe JS |
5311 | |
5312 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
5313 | } /* cy_cleanup_module */ |
5314 | ||
5315 | module_init(cy_init); | |
5316 | module_exit(cy_cleanup_module); | |
5317 | ||
5318 | MODULE_LICENSE("GPL"); |