Commit | Line | Data |
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1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
4 | static char rcsid[] = | |
5 | "$Revision: 2.3.2.20 $$Date: 2004/02/25 18:14:16 $"; | |
6 | ||
7 | /* | |
8 | * linux/drivers/char/cyclades.c | |
9 | * | |
10 | * This file contains the driver for the Cyclades async multiport | |
11 | * serial boards. | |
12 | * | |
13 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
14 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
15 | * Currently maintained by Cyclades team <async@cyclades.com>. | |
16 | * | |
17 | * For Technical support and installation problems, please send e-mail | |
18 | * to support@cyclades.com. | |
19 | * | |
20 | * Much of the design and some of the code came from serial.c | |
21 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
22 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
23 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
24 | * | |
25 | * This version supports shared IRQ's (only for PCI boards). | |
26 | * | |
27 | * $Log: cyclades.c,v $ | |
28 | * Prevent users from opening non-existing Z ports. | |
29 | * | |
30 | * Revision 2.3.2.8 2000/07/06 18:14:16 ivan | |
31 | * Fixed the PCI detection function to work properly on Alpha systems. | |
32 | * Implemented support for TIOCSERGETLSR ioctl. | |
33 | * Implemented full support for non-standard baud rates. | |
34 | * | |
35 | * Revision 2.3.2.7 2000/06/01 18:26:34 ivan | |
36 | * Request PLX I/O region, although driver doesn't use it, to avoid | |
37 | * problems with other drivers accessing it. | |
38 | * Removed count for on-board buffer characters in cy_chars_in_buffer | |
39 | * (Cyclades-Z only). | |
40 | * | |
41 | * Revision 2.3.2.6 2000/05/05 13:56:05 ivan | |
42 | * Driver now reports physical instead of virtual memory addresses. | |
43 | * Masks were added to some Cyclades-Z read accesses. | |
44 | * Implemented workaround for PLX9050 bug that would cause a system lockup | |
45 | * in certain systems, depending on the MMIO addresses allocated to the | |
46 | * board. | |
47 | * Changed the Tx interrupt programming in the CD1400 chips to boost up | |
48 | * performance (Cyclom-Y only). | |
49 | * Code is now compliant with the new module interface (module_[init|exit]). | |
50 | * Make use of the PCI helper functions to access PCI resources. | |
51 | * Did some code "housekeeping". | |
52 | * | |
53 | * Revision 2.3.2.5 2000/01/19 14:35:33 ivan | |
54 | * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. | |
55 | * | |
56 | * Revision 2.3.2.4 2000/01/17 09:19:40 ivan | |
57 | * Fixed SMP locking in Cyclom-Y interrupt handler. | |
58 | * | |
59 | * Revision 2.3.2.3 1999/12/28 12:11:39 ivan | |
60 | * Added a new cyclades_card field called nports to allow the driver to | |
61 | * know the exact number of ports found by the Z firmware after its load; | |
62 | * RX buffer contention prevention logic on interrupt op mode revisited | |
63 | * (Cyclades-Z only); | |
64 | * Revisited printk's for Z debug; | |
65 | * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; | |
66 | * | |
67 | * Revision 2.3.2.2 1999/10/01 11:27:43 ivan | |
68 | * Fixed bug in cyz_poll that would make all ports but port 0 | |
69 | * unable to transmit/receive data (Cyclades-Z only); | |
70 | * Implemented logic to prevent the RX buffer from being stuck with data | |
71 | * due to a driver / firmware race condition in interrupt op mode | |
72 | * (Cyclades-Z only); | |
73 | * Fixed bug in block_til_ready logic that would lead to a system crash; | |
74 | * Revisited cy_close spinlock usage; | |
75 | * | |
76 | * Revision 2.3.2.1 1999/09/28 11:01:22 ivan | |
77 | * Revisited CONFIG_PCI conditional compilation for PCI board support; | |
78 | * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; | |
79 | * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; | |
80 | * Removed CTS handling from the driver -- this is now completely handled | |
81 | * by the firmware (Cyclades-Z only); | |
82 | * Flush RX on-board buffers on a port open (Cyclades-Z only); | |
83 | * Fixed handling of ASYNC_SPD_* TTY flags; | |
84 | * Module unload now unmaps all memory area allocated by ioremap; | |
85 | * | |
86 | * Revision 2.3.1.1 1999/07/15 16:45:53 ivan | |
87 | * Removed CY_PROC conditional compilation; | |
88 | * Implemented SMP-awareness for the driver; | |
89 | * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] | |
90 | * functions; | |
91 | * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs | |
92 | * (irq=NN) as parameters (only for ISA boards); | |
93 | * Fixed bug in set_line_char that would prevent the Cyclades-Z | |
94 | * ports from being configured at speeds above 115.2Kbps; | |
95 | * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control | |
96 | * switching from working properly; | |
97 | * The driver now only prints IRQ info for the Cyclades-Z if it's | |
98 | * configured to work in interrupt mode; | |
99 | * | |
100 | * Revision 2.2.2.3 1999/06/28 11:13:29 ivan | |
101 | * Added support for interrupt mode operation for the Z cards; | |
102 | * Removed the driver inactivity control for the Z; | |
103 | * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when | |
104 | * the Z firmware is not loaded yet; | |
105 | * Replaced the "manual" Z Tx flush buffer by a call to a FW command of | |
106 | * same functionality; | |
107 | * Implemented workaround for IRQ setting loss on the PCI configuration | |
108 | * registers after a PCI bridge EEPROM reload (affects PLX9060 only); | |
109 | * | |
110 | * Revision 2.2.2.2 1999/05/14 17:18:15 ivan | |
111 | * /proc entry location changed to /proc/tty/driver/cyclades; | |
112 | * Added support to shared IRQ's (only for PCI boards); | |
113 | * Added support for Cobalt Qube2 systems; | |
114 | * IRQ [de]allocation scheme revisited; | |
115 | * BREAK implementation changed in order to make use of the 'break_ctl' | |
116 | * TTY facility; | |
117 | * Fixed typo in TTY structure field 'driver_name'; | |
118 | * Included a PCI bridge reset and EEPROM reload in the board | |
119 | * initialization code (for both Y and Z series). | |
120 | * | |
121 | * Revision 2.2.2.1 1999/04/08 16:17:43 ivan | |
122 | * Fixed a bug in cy_wait_until_sent that was preventing the port to be | |
123 | * closed properly after a SIGINT; | |
124 | * Module usage counter scheme revisited; | |
125 | * Added support to the upcoming Y PCI boards (i.e., support to additional | |
126 | * PCI Device ID's). | |
127 | * | |
128 | * Revision 2.2.1.10 1999/01/20 16:14:29 ivan | |
129 | * Removed all unnecessary page-alignement operations in ioremap calls | |
130 | * (ioremap is currently safe for these operations). | |
131 | * | |
132 | * Revision 2.2.1.9 1998/12/30 18:18:30 ivan | |
133 | * Changed access to PLX PCI bridge registers from I/O to MMIO, in | |
134 | * order to make PLX9050-based boards work with certain motherboards. | |
135 | * | |
136 | * Revision 2.2.1.8 1998/11/13 12:46:20 ivan | |
137 | * cy_close function now resets (correctly) the tty->closing flag; | |
138 | * JIFFIES_DIFF macro fixed. | |
139 | * | |
140 | * Revision 2.2.1.7 1998/09/03 12:07:28 ivan | |
141 | * Fixed bug in cy_close function, which was not informing HW of | |
142 | * which port should have the reception disabled before doing so; | |
143 | * fixed Cyclom-8YoP hardware detection bug. | |
144 | * | |
145 | * Revision 2.2.1.6 1998/08/20 17:15:39 ivan | |
146 | * Fixed bug in cy_close function, which causes malfunction | |
147 | * of one of the first 4 ports when a higher port is closed | |
148 | * (Cyclom-Y only). | |
149 | * | |
150 | * Revision 2.2.1.5 1998/08/10 18:10:28 ivan | |
151 | * Fixed Cyclom-4Yo hardware detection bug. | |
152 | * | |
153 | * Revision 2.2.1.4 1998/08/04 11:02:50 ivan | |
154 | * /proc/cyclades implementation with great collaboration of | |
155 | * Marc Lewis <marc@blarg.net>; | |
156 | * cyy_interrupt was changed to avoid occurrence of kernel oopses | |
157 | * during PPP operation. | |
158 | * | |
159 | * Revision 2.2.1.3 1998/06/01 12:09:10 ivan | |
160 | * General code review in order to comply with 2.1 kernel standards; | |
161 | * data loss prevention for slow devices revisited (cy_wait_until_sent | |
162 | * was created); | |
163 | * removed conditional compilation for new/old PCI structure support | |
164 | * (now the driver only supports the new PCI structure). | |
165 | * | |
166 | * Revision 2.2.1.1 1998/03/19 16:43:12 ivan | |
167 | * added conditional compilation for new/old PCI structure support; | |
168 | * removed kernel series (2.0.x / 2.1.x) conditional compilation. | |
169 | * | |
170 | * Revision 2.1.1.3 1998/03/16 18:01:12 ivan | |
171 | * cleaned up the data loss fix; | |
172 | * fixed XON/XOFF handling once more (Cyclades-Z); | |
173 | * general review of the driver routines; | |
174 | * introduction of a mechanism to prevent data loss with slow | |
175 | * printers, by forcing a delay before closing the port. | |
176 | * | |
177 | * Revision 2.1.1.2 1998/02/17 16:50:00 ivan | |
178 | * fixed detection/handling of new CD1400 in Ye boards; | |
179 | * fixed XON/XOFF handling (Cyclades-Z); | |
180 | * fixed data loss caused by a premature port close; | |
181 | * introduction of a flag that holds the CD1400 version ID per port | |
182 | * (used by the CYGETCD1400VER new ioctl). | |
183 | * | |
184 | * Revision 2.1.1.1 1997/12/03 17:31:19 ivan | |
185 | * Code review for the module cleanup routine; | |
186 | * fixed RTS and DTR status report for new CD1400's in get_modem_info; | |
187 | * includes anonymous changes regarding signal_pending. | |
188 | * | |
189 | * Revision 2.1 1997/11/01 17:42:41 ivan | |
190 | * Changes in the driver to support Alpha systems (except 8Zo V_1); | |
191 | * BREAK fix for the Cyclades-Z boards; | |
192 | * driver inactivity control by FW implemented; | |
193 | * introduction of flag that allows driver to take advantage of | |
194 | * a special CD1400 feature related to HW flow control; | |
195 | * added support for the CD1400 rev. J (Cyclom-Y boards); | |
196 | * introduction of ioctls to: | |
197 | * - control the rtsdtr_inv flag (Cyclom-Y); | |
198 | * - control the rflow flag (Cyclom-Y); | |
199 | * - adjust the polling interval (Cyclades-Z); | |
200 | * | |
201 | * Revision 1.36.4.33 1997/06/27 19:00:00 ivan | |
202 | * Fixes related to kernel version conditional | |
203 | * compilation. | |
204 | * | |
205 | * Revision 1.36.4.32 1997/06/14 19:30:00 ivan | |
206 | * Compatibility issues between kernels 2.0.x and | |
207 | * 2.1.x (mainly related to clear_bit function). | |
208 | * | |
209 | * Revision 1.36.4.31 1997/06/03 15:30:00 ivan | |
210 | * Changes to define the memory window according to the | |
211 | * board type. | |
212 | * | |
213 | * Revision 1.36.4.30 1997/05/16 15:30:00 daniel | |
214 | * Changes to support new cycladesZ boards. | |
215 | * | |
216 | * Revision 1.36.4.29 1997/05/12 11:30:00 daniel | |
217 | * Merge of Bentson's and Daniel's version 1.36.4.28. | |
218 | * Corrects bug in cy_detect_pci: check if there are more | |
219 | * ports than the number of static structs allocated. | |
220 | * Warning message during initialization if this driver is | |
221 | * used with the new generation of cycladesZ boards. Those | |
222 | * will be supported only in next release of the driver. | |
223 | * Corrects bug in cy_detect_pci and cy_detect_isa that | |
224 | * returned wrong number of VALID boards, when a cyclomY | |
225 | * was found with no serial modules connected. | |
226 | * Changes to use current (2.1.x) kernel subroutine names | |
227 | * and created macros for compilation with 2.0.x kernel, | |
228 | * instead of the other way around. | |
229 | * | |
230 | * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson | |
231 | * Change queue_task_irq_off to queue_task_irq. | |
232 | * The inline function queue_task_irq_off (tqueue.h) | |
233 | * was removed from latest releases of 2.1.x kernel. | |
234 | * Use of macro __init to mark the initialization | |
235 | * routines, so memory can be reused. | |
236 | * Also incorporate implementation of critical region | |
237 | * in function cleanup_module() created by anonymous | |
238 | * linuxer. | |
239 | * | |
240 | * Revision 1.36.4.28 1997/04/25 16:00:00 daniel | |
241 | * Change to support new firmware that solves DCD problem: | |
242 | * application could fail to receive SIGHUP signal when DCD | |
243 | * varying too fast. | |
244 | * | |
245 | * Revision 1.36.4.27 1997/03/26 10:30:00 daniel | |
246 | * Changed for support linux versions 2.1.X. | |
247 | * Backward compatible with linux versions 2.0.X. | |
248 | * Corrected illegal use of filler field in | |
249 | * CH_CTRL struct. | |
250 | * Deleted some debug messages. | |
251 | * | |
252 | * Revision 1.36.4.26 1997/02/27 12:00:00 daniel | |
253 | * Included check for NULL tty pointer in cyz_poll. | |
254 | * | |
255 | * Revision 1.36.4.25 1997/02/26 16:28:30 bentson | |
256 | * Bill Foster at Blarg! Online services noticed that | |
257 | * some of the switch elements of -Z modem control | |
258 | * lacked a closing "break;" | |
259 | * | |
260 | * Revision 1.36.4.24 1997/02/24 11:00:00 daniel | |
261 | * Changed low water threshold for buffer xmit_buf | |
262 | * | |
263 | * Revision 1.36.4.23 1996/12/02 21:50:16 bentson | |
264 | * Marcio provided fix to modem status fetch for -Z | |
265 | * | |
266 | * Revision 1.36.4.22 1996/10/28 22:41:17 bentson | |
267 | * improve mapping of -Z control page (thanks to Steve | |
268 | * Price <stevep@fa.tdktca.com> for help on this) | |
269 | * | |
270 | * Revision 1.36.4.21 1996/09/10 17:00:10 bentson | |
271 | * shift from CPU-bound to memcopy in cyz_polling operation | |
272 | * | |
273 | * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson | |
274 | * Added support to set and report higher speeds. | |
275 | * | |
276 | * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito | |
277 | * Some fixes in the HW flow control for the BETA release. | |
278 | * Don't try to register the IRQ. | |
279 | * | |
280 | * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson | |
281 | * make sure "cyc" appears in all kernel messages; all soft interrupts | |
282 | * handled by same routine; recognize out-of-band reception; comment | |
283 | * out some diagnostic messages; leave RTS/CTS flow control to hardware; | |
284 | * fix race condition in -Z buffer management; only -Y needs to explictly | |
285 | * flush chars; tidy up some startup messages; | |
286 | * | |
287 | * Revision 1.36.4.18 1996/07/25 18:57:31 bentson | |
288 | * shift MOD_INC_USE_COUNT location to match | |
289 | * serial.c; purge some diagnostic messages; | |
290 | * | |
291 | * Revision 1.36.4.17 1996/07/25 18:01:08 bentson | |
292 | * enable modem status messages and fetch & process them; note | |
293 | * time of last activity type for each port; set_line_char now | |
294 | * supports more than line 0 and treats 0 baud correctly; | |
295 | * get_modem_info senses rs_status; | |
296 | * | |
297 | * Revision 1.36.4.16 1996/07/20 08:43:15 bentson | |
298 | * barely works--now's time to turn on | |
299 | * more features 'til it breaks | |
300 | * | |
301 | * Revision 1.36.4.15 1996/07/19 22:30:06 bentson | |
302 | * check more -Z board status; shorten boot message | |
303 | * | |
304 | * Revision 1.36.4.14 1996/07/19 22:20:37 bentson | |
305 | * fix reference to ch_ctrl in startup; verify return | |
306 | * values from cyz_issue_cmd and cyz_update_channel; | |
307 | * more stuff to get modem control correct; | |
308 | * | |
309 | * Revision 1.36.4.13 1996/07/11 19:53:33 bentson | |
310 | * more -Z stuff folded in; re-order changes to put -Z stuff | |
311 | * after -Y stuff (to make changes clearer) | |
312 | * | |
313 | * Revision 1.36.4.12 1996/07/11 15:40:55 bentson | |
314 | * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. | |
315 | * Add code to send break. Clear firmware ID word at startup (so | |
316 | * that other code won't talk to inactive board). | |
317 | * | |
318 | * Revision 1.36.4.11 1996/07/09 05:28:29 bentson | |
319 | * add code for -Z in set_line_char | |
320 | * | |
321 | * Revision 1.36.4.10 1996/07/08 19:28:37 bentson | |
322 | * fold more -Z stuff (or in some cases, error messages) | |
323 | * into driver; add text to "don't know what to do" messages. | |
324 | * | |
325 | * Revision 1.36.4.9 1996/07/08 18:38:38 bentson | |
326 | * moved compile-time flags near top of file; cosmetic changes | |
327 | * to narrow text (to allow 2-up printing); changed many declarations | |
328 | * to "static" to limit external symbols; shuffled code order to | |
329 | * coalesce -Y and -Z specific code, also to put internal functions | |
330 | * in order of tty_driver structure; added code to recognize -Z | |
331 | * ports (and for moment, do nothing or report error); add cy_startup | |
332 | * to parse boot command line for extra base addresses for ISA probes; | |
333 | * | |
334 | * Revision 1.36.4.8 1996/06/25 17:40:19 bentson | |
335 | * reorder some code, fix types of some vars (int vs. long), | |
336 | * add cy_setup to support user declared ISA addresses | |
337 | * | |
338 | * Revision 1.36.4.7 1996/06/21 23:06:18 bentson | |
339 | * dump ioctl based firmware load (it's now a user level | |
340 | * program); ensure uninitialzed ports cannot be used | |
341 | * | |
342 | * Revision 1.36.4.6 1996/06/20 23:17:19 bentson | |
343 | * rename vars and restructure some code | |
344 | * | |
345 | * Revision 1.36.4.5 1996/06/14 15:09:44 bentson | |
346 | * get right status back after boot load | |
347 | * | |
348 | * Revision 1.36.4.4 1996/06/13 19:51:44 bentson | |
349 | * successfully loads firmware | |
350 | * | |
351 | * Revision 1.36.4.3 1996/06/13 06:08:33 bentson | |
352 | * add more of the code for the boot/load ioctls | |
353 | * | |
354 | * Revision 1.36.4.2 1996/06/11 21:00:51 bentson | |
355 | * start to add Z functionality--starting with ioctl | |
356 | * for loading firmware | |
357 | * | |
358 | * Revision 1.36.4.1 1996/06/10 18:03:02 bentson | |
359 | * added code to recognize Z/PCI card at initialization; report | |
360 | * presence, but card is not initialized (because firmware needs | |
361 | * to be loaded) | |
362 | * | |
363 | * Revision 1.36.3.8 1996/06/07 16:29:00 bentson | |
364 | * starting minor number at zero; added missing verify_area | |
365 | * as noted by Heiko Eissfeldt <heiko@colossus.escape.de> | |
366 | * | |
367 | * Revision 1.36.3.7 1996/04/19 21:06:18 bentson | |
368 | * remove unneeded boot message & fix CLOCAL hardware flow | |
369 | * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); | |
370 | * remove unused diagnostic statements; minor 0 is first; | |
371 | * | |
372 | * Revision 1.36.3.6 1996/03/13 13:21:17 marcio | |
373 | * The kernel function vremap (available only in later 1.3.xx kernels) | |
374 | * allows the access to memory addresses above the RAM. This revision | |
375 | * of the driver supports PCI boards below 1Mb (device id 0x100) and | |
376 | * above 1Mb (device id 0x101). | |
377 | * | |
378 | * Revision 1.36.3.5 1996/03/07 15:20:17 bentson | |
379 | * Some global changes to interrupt handling spilled into | |
380 | * this driver--mostly unused arguments in system function | |
381 | * calls. Also added change by Marcio Saito which should | |
382 | * reduce lost interrupts at startup by fast processors. | |
383 | * | |
384 | * Revision 1.36.3.4 1995/11/13 20:45:10 bentson | |
385 | * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed | |
386 | * in 1.3.41 kernel to remove a possible race condition, extend | |
387 | * some error messages, and let the driver run as a loadable module | |
388 | * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a | |
389 | * possible race condition. | |
390 | * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. | |
391 | * | |
392 | * Revision 1.36.3.3 1995/11/13 19:44:48 bentson | |
393 | * Changes by Linus Torvalds in 1.3.33 kernel distribution | |
394 | * required due to reordering of driver initialization. | |
395 | * Drivers are now initialized *after* memory management. | |
396 | * | |
397 | * Revision 1.36.3.2 1995/09/08 22:07:14 bentson | |
398 | * remove printk from ISR; fix typo | |
399 | * | |
400 | * Revision 1.36.3.1 1995/09/01 12:00:42 marcio | |
401 | * Minor fixes in the PCI board support. PCI function calls in | |
402 | * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan | |
403 | * <duncan@okay.com>. "bad serial count" message removed. | |
404 | * | |
405 | * Revision 1.36.3 1995/08/22 09:19:42 marcio | |
406 | * Cyclom-Y/PCI support added. Changes in the cy_init routine and | |
407 | * board initialization. Changes in the boot messages. The driver | |
408 | * supports up to 4 boards and 64 ports by default. | |
409 | * | |
410 | * Revision 1.36.1.4 1995/03/29 06:14:14 bentson | |
411 | * disambiguate between Cyclom-16Y and Cyclom-32Ye; | |
412 | * | |
413 | * Revision 1.36.1.3 1995/03/23 22:15:35 bentson | |
414 | * add missing break in modem control block in ioctl switch statement | |
415 | * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); | |
416 | * | |
417 | * Revision 1.36.1.2 1995/03/22 19:16:22 bentson | |
418 | * make sure CTS flow control is set as soon as possible (thanks | |
419 | * to note from David Lambert <lambert@chesapeake.rps.slb.com>); | |
420 | * | |
421 | * Revision 1.36.1.1 1995/03/13 15:44:43 bentson | |
422 | * initialize defaults for receive threshold and stale data timeout; | |
423 | * cosmetic changes; | |
424 | * | |
425 | * Revision 1.36 1995/03/10 23:33:53 bentson | |
426 | * added support of chips 4-7 in 32 port Cyclom-Ye; | |
427 | * fix cy_interrupt pointer dereference problem | |
428 | * (Joe Portman <baron@aa.net>); | |
429 | * give better error response if open is attempted on non-existent port | |
430 | * (Zachariah Vaum <jchryslr@netcom.com>); | |
431 | * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); | |
432 | * conditional compilation for -16Y on systems with fast, noisy bus; | |
433 | * comment out diagnostic print function; | |
434 | * cleaned up table of base addresses; | |
435 | * set receiver time-out period register to correct value, | |
436 | * set receive threshold to better default values, | |
437 | * set chip timer to more accurate 200 Hz ticking, | |
438 | * add code to monitor and modify receive parameters | |
439 | * (Rik Faith <faith@cs.unc.edu> Nick Simicich | |
440 | * <njs@scifi.emi.net>); | |
441 | * | |
442 | * Revision 1.35 1994/12/16 13:54:18 steffen | |
443 | * additional patch by Marcio Saito for board detection | |
444 | * Accidently left out in 1.34 | |
445 | * | |
446 | * Revision 1.34 1994/12/10 12:37:12 steffen | |
447 | * This is the corrected version as suggested by Marcio Saito | |
448 | * | |
449 | * Revision 1.33 1994/12/01 22:41:18 bentson | |
450 | * add hooks to support more high speeds directly; add tytso | |
451 | * patch regarding CLOCAL wakeups | |
452 | * | |
453 | * Revision 1.32 1994/11/23 19:50:04 bentson | |
454 | * allow direct kernel control of higher signalling rates; | |
455 | * look for cards at additional locations | |
456 | * | |
457 | * Revision 1.31 1994/11/16 04:33:28 bentson | |
458 | * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- | |
459 | * a problem in chars_in_buffer has been resolved by some | |
460 | * small changes; this should yield smoother output | |
461 | * | |
462 | * Revision 1.30 1994/11/16 04:28:05 bentson | |
463 | * Fix from Corey Minyard, Internet: minyard@metronet.com, | |
464 | * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to | |
465 | * cy_hangup that appears to clear up much (all?) of the | |
466 | * DTR glitches; also he's added/cleaned-up diagnostic messages | |
467 | * | |
468 | * Revision 1.29 1994/11/16 04:16:07 bentson | |
469 | * add change proposed by Ralph Sims, ralphs@halcyon.com, to | |
470 | * operate higher speeds in same way as other serial ports; | |
471 | * add more serial ports (for up to two 16-port muxes). | |
472 | * | |
473 | * Revision 1.28 1994/11/04 00:13:16 root | |
474 | * turn off diagnostic messages | |
475 | * | |
476 | * Revision 1.27 1994/11/03 23:46:37 root | |
477 | * bunch of changes to bring driver into greater conformance | |
478 | * with the serial.c driver (looking for missed fixes) | |
479 | * | |
480 | * Revision 1.26 1994/11/03 22:40:36 root | |
481 | * automatic interrupt probing fixed. | |
482 | * | |
483 | * Revision 1.25 1994/11/03 20:17:02 root | |
484 | * start to implement auto-irq | |
485 | * | |
486 | * Revision 1.24 1994/11/03 18:01:55 root | |
487 | * still working on modem signals--trying not to drop DTR | |
488 | * during the getty/login processes | |
489 | * | |
490 | * Revision 1.23 1994/11/03 17:51:36 root | |
491 | * extend baud rate support; set receive threshold as function | |
492 | * of baud rate; fix some problems with RTS/CTS; | |
493 | * | |
494 | * Revision 1.22 1994/11/02 18:05:35 root | |
495 | * changed arguments to udelay to type long to get | |
496 | * delays to be of correct duration | |
497 | * | |
498 | * Revision 1.21 1994/11/02 17:37:30 root | |
499 | * employ udelay (after calibrating loops_per_second earlier | |
500 | * in init/main.c) instead of using home-grown delay routines | |
501 | * | |
502 | * Revision 1.20 1994/11/02 03:11:38 root | |
503 | * cy_chars_in_buffer forces a return value of 0 to let | |
504 | * login work (don't know why it does); some functions | |
505 | * that were returning EFAULT, now executes the code; | |
506 | * more work on deciding when to disable xmit interrupts; | |
507 | * | |
508 | * Revision 1.19 1994/11/01 20:10:14 root | |
509 | * define routine to start transmission interrupts (by enabling | |
510 | * transmit interrupts); directly enable/disable modem interrupts; | |
511 | * | |
512 | * Revision 1.18 1994/11/01 18:40:45 bentson | |
513 | * Don't always enable transmit interrupts in startup; interrupt on | |
514 | * TxMpty instead of TxRdy to help characters get out before shutdown; | |
515 | * restructure xmit interrupt to check for chars first and quit if | |
516 | * none are ready to go; modem status (MXVRx) is upright, _not_ inverted | |
517 | * (to my view); | |
518 | * | |
519 | * Revision 1.17 1994/10/30 04:39:45 bentson | |
520 | * rename serial_driver and callout_driver to cy_serial_driver and | |
521 | * cy_callout_driver to avoid linkage interference; initialize | |
522 | * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port | |
523 | * from cyclades_port structure; add paranoia check to cy_close; | |
524 | * | |
525 | * Revision 1.16 1994/10/30 01:14:33 bentson | |
526 | * change major numbers; add some _early_ return statements; | |
527 | * | |
528 | * Revision 1.15 1994/10/29 06:43:15 bentson | |
529 | * final tidying up for clean compile; enable some error reporting | |
530 | * | |
531 | * Revision 1.14 1994/10/28 20:30:22 Bentson | |
532 | * lots of changes to drag the driver towards the new tty_io | |
533 | * structures and operation. not expected to work, but may | |
534 | * compile cleanly. | |
535 | * | |
536 | * Revision 1.13 1994/07/21 23:08:57 Bentson | |
537 | * add some diagnostic cruft; support 24 lines (for testing | |
538 | * both -8Y and -16Y cards; be more thorough in servicing all | |
539 | * chips during interrupt; add "volatile" a few places to | |
540 | * circumvent compiler optimizations; fix base & offset | |
541 | * computations in block_til_ready (was causing chip 0 to | |
542 | * stop operation) | |
543 | * | |
544 | * Revision 1.12 1994/07/19 16:42:11 Bentson | |
545 | * add some hackery for kernel version 1.1.8; expand | |
546 | * error messages; refine timing for delay loops and | |
547 | * declare loop params volatile | |
548 | * | |
549 | * Revision 1.11 1994/06/11 21:53:10 bentson | |
550 | * get use of save_car right in transmit interrupt service | |
551 | * | |
552 | * Revision 1.10.1.1 1994/06/11 21:31:18 bentson | |
553 | * add some diagnostic printing; try to fix save_car stuff | |
554 | * | |
555 | * Revision 1.10 1994/06/11 20:36:08 bentson | |
556 | * clean up compiler warnings | |
557 | * | |
558 | * Revision 1.9 1994/06/11 19:42:46 bentson | |
559 | * added a bunch of code to support modem signalling | |
560 | * | |
561 | * Revision 1.8 1994/06/11 17:57:07 bentson | |
562 | * recognize break & parity error | |
563 | * | |
564 | * Revision 1.7 1994/06/05 05:51:34 bentson | |
565 | * Reorder baud table to be monotonic; add cli to CP; discard | |
566 | * incoming characters and status if the line isn't open; start to | |
567 | * fold code into cy_throttle; start to port get_serial_info, | |
568 | * set_serial_info, get_modem_info, set_modem_info, and send_break | |
569 | * from serial.c; expand cy_ioctl; relocate and expand config_setup; | |
570 | * get flow control characters from tty struct; invalidate ports w/o | |
571 | * hardware; | |
572 | * | |
573 | * Revision 1.6 1994/05/31 18:42:21 bentson | |
574 | * add a loop-breaker in the interrupt service routine; | |
575 | * note when port is initialized so that it can be shut | |
576 | * down under the right conditions; receive works without | |
577 | * any obvious errors | |
578 | * | |
579 | * Revision 1.5 1994/05/30 00:55:02 bentson | |
580 | * transmit works without obvious errors | |
581 | * | |
582 | * Revision 1.4 1994/05/27 18:46:27 bentson | |
583 | * incorporated more code from lib_y.c; can now print short | |
584 | * strings under interrupt control to port zero; seems to | |
585 | * select ports/channels/lines correctly | |
586 | * | |
587 | * Revision 1.3 1994/05/25 22:12:44 bentson | |
588 | * shifting from multi-port on a card to proper multiplexor | |
589 | * data structures; added skeletons of most routines | |
590 | * | |
591 | * Revision 1.2 1994/05/19 13:21:43 bentson | |
592 | * start to crib from other sources | |
593 | * | |
594 | */ | |
595 | ||
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 | ||
600 | #define NR_CARDS 4 | |
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 | ||
607 | #define NR_PORTS 256 | |
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 | ||
627 | #if 0 | |
628 | #define PAUSE __asm__("nop"); | |
629 | #else | |
630 | #define PAUSE ; | |
631 | #endif | |
632 | ||
633 | /* | |
634 | * Include section | |
635 | */ | |
636 | #include <linux/config.h> | |
637 | #include <linux/module.h> | |
638 | #include <linux/errno.h> | |
639 | #include <linux/signal.h> | |
640 | #include <linux/sched.h> | |
641 | #include <linux/timer.h> | |
642 | #include <linux/interrupt.h> | |
643 | #include <linux/tty.h> | |
644 | #include <linux/serial.h> | |
645 | #include <linux/major.h> | |
646 | #include <linux/string.h> | |
647 | #include <linux/fcntl.h> | |
648 | #include <linux/ptrace.h> | |
649 | #include <linux/cyclades.h> | |
650 | #include <linux/mm.h> | |
651 | #include <linux/ioport.h> | |
652 | #include <linux/init.h> | |
653 | #include <linux/delay.h> | |
654 | #include <linux/spinlock.h> | |
655 | #include <linux/bitops.h> | |
656 | ||
657 | #include <asm/system.h> | |
658 | #include <asm/io.h> | |
659 | #include <asm/irq.h> | |
660 | #include <asm/uaccess.h> | |
661 | ||
662 | #define CY_LOCK(info,flags) \ | |
663 | do { \ | |
664 | spin_lock_irqsave(&cy_card[info->card].card_lock, flags); \ | |
665 | } while (0) | |
666 | ||
667 | #define CY_UNLOCK(info,flags) \ | |
668 | do { \ | |
669 | spin_unlock_irqrestore(&cy_card[info->card].card_lock, flags); \ | |
670 | } while (0) | |
671 | ||
672 | #include <linux/types.h> | |
673 | #include <linux/kernel.h> | |
674 | #include <linux/pci.h> | |
675 | ||
676 | #include <linux/stat.h> | |
677 | #include <linux/proc_fs.h> | |
678 | ||
679 | static void cy_throttle (struct tty_struct *tty); | |
680 | static void cy_send_xchar (struct tty_struct *tty, char ch); | |
681 | ||
682 | #define IS_CYC_Z(card) ((card).num_chips == -1) | |
683 | ||
684 | #define Z_FPGA_CHECK(card) \ | |
685 | ((cy_readl(&((struct RUNTIME_9060 __iomem *) \ | |
686 | ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) | |
687 | ||
688 | #define ISZLOADED(card) (((ZO_V1==cy_readl(&((struct RUNTIME_9060 __iomem *) \ | |
689 | ((card).ctl_addr))->mail_box_0)) || \ | |
690 | Z_FPGA_CHECK(card)) && \ | |
691 | (ZFIRM_ID==cy_readl(&((struct FIRM_ID __iomem *) \ | |
692 | ((card).base_addr+ID_ADDRESS))->signature))) | |
693 | ||
694 | #ifndef SERIAL_XMIT_SIZE | |
695 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
696 | #endif | |
697 | #define WAKEUP_CHARS 256 | |
698 | ||
699 | #define STD_COM_FLAGS (0) | |
700 | ||
701 | #define JIFFIES_DIFF(n, j) ((j) - (n)) | |
702 | ||
703 | static struct tty_driver *cy_serial_driver; | |
704 | ||
705 | #ifdef CONFIG_ISA | |
706 | /* This is the address lookup table. The driver will probe for | |
707 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
708 | driver to probe addresses at a different address, add it to | |
709 | this table. If the driver is probing some other board and | |
710 | causing problems, remove the offending address from this table. | |
711 | The cy_setup function extracts additional addresses from the | |
712 | boot options line. The form is "cyclades=address,address..." | |
713 | */ | |
714 | ||
715 | static unsigned int cy_isa_addresses[] = { | |
716 | 0xD0000, | |
717 | 0xD2000, | |
718 | 0xD4000, | |
719 | 0xD6000, | |
720 | 0xD8000, | |
721 | 0xDA000, | |
722 | 0xDC000, | |
723 | 0xDE000, | |
724 | 0,0,0,0,0,0,0,0 | |
725 | }; | |
726 | #define NR_ISA_ADDRS (sizeof(cy_isa_addresses)/sizeof(unsigned char*)) | |
727 | ||
728 | #ifdef MODULE | |
729 | static long maddr[NR_CARDS] = { 0, }; | |
730 | static int irq[NR_CARDS] = { 0, }; | |
731 | ||
732 | module_param_array(maddr, long, NULL, 0); | |
733 | module_param_array(irq, int, NULL, 0); | |
734 | #endif | |
735 | ||
736 | #endif /* CONFIG_ISA */ | |
737 | ||
738 | /* This is the per-card data structure containing address, irq, number of | |
739 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
740 | */ | |
741 | static struct cyclades_card cy_card[NR_CARDS]; | |
742 | ||
743 | /* This is the per-channel data structure containing pointers, flags | |
744 | and variables for the port. This driver supports a maximum of NR_PORTS. | |
745 | */ | |
746 | static struct cyclades_port cy_port[NR_PORTS]; | |
747 | ||
748 | static int cy_next_channel; /* next minor available */ | |
749 | ||
750 | /* | |
751 | * tmp_buf is used as a temporary buffer by serial_write. We need to | |
752 | * lock it in case the copy_from_user blocks while swapping in a page, | |
753 | * and some other program tries to do a serial write at the same time. | |
754 | * Since the lock will only come under contention when the system is | |
755 | * swapping and available memory is low, it makes sense to share one | |
756 | * buffer across all the serial ports, since it significantly saves | |
757 | * memory if large numbers of serial ports are open. This buffer is | |
758 | * allocated when the first cy_open occurs. | |
759 | */ | |
760 | static unsigned char *tmp_buf; | |
761 | ||
762 | /* | |
763 | * This is used to look up the divisor speeds and the timeouts | |
764 | * We're normally limited to 15 distinct baud rates. The extra | |
765 | * are accessed via settings in info->flags. | |
766 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, | |
767 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
768 | * HI VHI | |
769 | * 20 | |
770 | */ | |
771 | static int baud_table[] = { | |
772 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, | |
773 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800,115200,150000, | |
774 | 230400, 0}; | |
775 | ||
776 | static char baud_co_25[] = { /* 25 MHz clock option table */ | |
777 | /* value => 00 01 02 03 04 */ | |
778 | /* divide by 8 32 128 512 2048 */ | |
779 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
780 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
781 | ||
782 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ | |
783 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, | |
784 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15}; | |
785 | ||
786 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ | |
787 | /* value => 00 01 02 03 04 */ | |
788 | /* divide by 8 32 128 512 2048 */ | |
789 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
790 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
791 | 0x00}; | |
792 | ||
793 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ | |
794 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, | |
795 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
796 | 0x21}; | |
797 | ||
798 | static char baud_cor3[] = { /* receive threshold */ | |
799 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
800 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
801 | 0x07}; | |
802 | ||
803 | /* | |
804 | * The Cyclades driver implements HW flow control as any serial driver. | |
805 | * The cyclades_port structure member rflow and the vector rflow_thr | |
806 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
807 | * data loss even when the system interrupt latency is too high. These flags | |
808 | * are to be used only with very special applications. Setting these flags | |
809 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
810 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
811 | * cables. | |
812 | */ | |
813 | ||
814 | static char rflow_thr[] = { /* rflow threshold */ | |
815 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
816 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
817 | 0x0a}; | |
818 | ||
819 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
820 | * address order. This look-up table overcomes that problem. | |
821 | */ | |
822 | static int cy_chip_offset [] = | |
823 | { 0x0000, | |
824 | 0x0400, | |
825 | 0x0800, | |
826 | 0x0C00, | |
827 | 0x0200, | |
828 | 0x0600, | |
829 | 0x0A00, | |
830 | 0x0E00 | |
831 | }; | |
832 | ||
833 | /* PCI related definitions */ | |
834 | ||
835 | static unsigned short cy_pci_nboard; | |
836 | static unsigned short cy_isa_nboard; | |
837 | static unsigned short cy_nboard; | |
838 | #ifdef CONFIG_PCI | |
839 | static unsigned short cy_pci_dev_id[] = { | |
840 | PCI_DEVICE_ID_CYCLOM_Y_Lo, /* PCI < 1Mb */ | |
841 | PCI_DEVICE_ID_CYCLOM_Y_Hi, /* PCI > 1Mb */ | |
842 | PCI_DEVICE_ID_CYCLOM_4Y_Lo, /* 4Y PCI < 1Mb */ | |
843 | PCI_DEVICE_ID_CYCLOM_4Y_Hi, /* 4Y PCI > 1Mb */ | |
844 | PCI_DEVICE_ID_CYCLOM_8Y_Lo, /* 8Y PCI < 1Mb */ | |
845 | PCI_DEVICE_ID_CYCLOM_8Y_Hi, /* 8Y PCI > 1Mb */ | |
846 | PCI_DEVICE_ID_CYCLOM_Z_Lo, /* Z PCI < 1Mb */ | |
847 | PCI_DEVICE_ID_CYCLOM_Z_Hi, /* Z PCI > 1Mb */ | |
848 | 0 /* end of table */ | |
849 | }; | |
850 | #endif | |
851 | ||
852 | static void cy_start(struct tty_struct *); | |
853 | static void set_line_char(struct cyclades_port *); | |
854 | static int cyz_issue_cmd(struct cyclades_card *, uclong, ucchar, uclong); | |
855 | #ifdef CONFIG_ISA | |
856 | static unsigned detect_isa_irq(void __iomem *); | |
857 | #endif /* CONFIG_ISA */ | |
858 | ||
859 | static int cyclades_get_proc_info(char *, char **, off_t , int , int *, void *); | |
860 | ||
861 | #ifndef CONFIG_CYZ_INTR | |
862 | static void cyz_poll(unsigned long); | |
863 | ||
864 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
865 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
866 | ||
867 | static int cyz_timeron = 0; | |
868 | static struct timer_list cyz_timerlist = TIMER_INITIALIZER(cyz_poll, 0, 0); | |
869 | ||
870 | #else /* CONFIG_CYZ_INTR */ | |
871 | static void cyz_rx_restart(unsigned long); | |
872 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
873 | #endif /* CONFIG_CYZ_INTR */ | |
874 | ||
875 | static inline int | |
876 | serial_paranoia_check(struct cyclades_port *info, | |
877 | char *name, const char *routine) | |
878 | { | |
879 | #ifdef SERIAL_PARANOIA_CHECK | |
880 | static const char *badmagic = | |
881 | "cyc Warning: bad magic number for serial struct (%s) in %s\n"; | |
882 | static const char *badinfo = | |
883 | "cyc Warning: null cyclades_port for (%s) in %s\n"; | |
884 | static const char *badrange = | |
885 | "cyc Warning: cyclades_port out of range for (%s) in %s\n"; | |
886 | ||
887 | if (!info) { | |
888 | printk(badinfo, name, routine); | |
889 | return 1; | |
890 | } | |
891 | ||
892 | if( (long)info < (long)(&cy_port[0]) | |
893 | || (long)(&cy_port[NR_PORTS]) < (long)info ){ | |
894 | printk(badrange, name, routine); | |
895 | return 1; | |
896 | } | |
897 | ||
898 | if (info->magic != CYCLADES_MAGIC) { | |
899 | printk(badmagic, name, routine); | |
900 | return 1; | |
901 | } | |
902 | #endif | |
903 | return 0; | |
904 | } /* serial_paranoia_check */ | |
905 | ||
906 | /* | |
907 | * This routine is used by the interrupt handler to schedule | |
908 | * processing in the software interrupt portion of the driver | |
909 | * (also known as the "bottom half"). This can be called any | |
910 | * number of times for any channel without harm. | |
911 | */ | |
912 | static inline void | |
913 | cy_sched_event(struct cyclades_port *info, int event) | |
914 | { | |
915 | info->event |= 1 << event; /* remember what kind of event and who */ | |
916 | schedule_work(&info->tqueue); | |
917 | } /* cy_sched_event */ | |
918 | ||
919 | ||
920 | /* | |
921 | * This routine is used to handle the "bottom half" processing for the | |
922 | * serial driver, known also the "software interrupt" processing. | |
923 | * This processing is done at the kernel interrupt level, after the | |
924 | * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This | |
925 | * is where time-consuming activities which can not be done in the | |
926 | * interrupt driver proper are done; the interrupt driver schedules | |
927 | * them using cy_sched_event(), and they get done here. | |
928 | * | |
929 | * This is done through one level of indirection--the task queue. | |
930 | * When a hardware interrupt service routine wants service by the | |
931 | * driver's bottom half, it enqueues the appropriate tq_struct (one | |
932 | * per port) to the keventd work queue and sets a request flag | |
933 | * that the work queue be processed. | |
934 | * | |
935 | * Although this may seem unwieldy, it gives the system a way to | |
936 | * pass an argument (in this case the pointer to the cyclades_port | |
937 | * structure) to the bottom half of the driver. Previous kernels | |
938 | * had to poll every port to see if that port needed servicing. | |
939 | */ | |
940 | static void | |
941 | do_softint(void *private_) | |
942 | { | |
943 | struct cyclades_port *info = (struct cyclades_port *) private_; | |
944 | struct tty_struct *tty; | |
945 | ||
946 | tty = info->tty; | |
947 | if (!tty) | |
948 | return; | |
949 | ||
950 | if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) { | |
951 | tty_hangup(info->tty); | |
952 | wake_up_interruptible(&info->open_wait); | |
953 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
954 | } | |
955 | if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) { | |
956 | wake_up_interruptible(&info->open_wait); | |
957 | } | |
958 | #ifdef CONFIG_CYZ_INTR | |
959 | if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event)) { | |
960 | if (cyz_rx_full_timer[info->line].function == NULL) { | |
961 | cyz_rx_full_timer[info->line].expires = jiffies + 1; | |
962 | cyz_rx_full_timer[info->line].function = cyz_rx_restart; | |
963 | cyz_rx_full_timer[info->line].data = (unsigned long)info; | |
964 | add_timer(&cyz_rx_full_timer[info->line]); | |
965 | } | |
966 | } | |
967 | #endif | |
968 | if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) { | |
969 | wake_up_interruptible(&info->delta_msr_wait); | |
970 | } | |
971 | if (test_and_clear_bit(Cy_EVENT_WRITE_WAKEUP, &info->event)) { | |
972 | tty_wakeup(tty); | |
973 | wake_up_interruptible(&tty->write_wait); | |
974 | } | |
975 | #ifdef Z_WAKE | |
976 | if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) { | |
977 | wake_up_interruptible(&info->shutdown_wait); | |
978 | } | |
979 | #endif | |
980 | } /* do_softint */ | |
981 | ||
982 | ||
983 | /***********************************************************/ | |
984 | /********* Start of block of Cyclom-Y specific code ********/ | |
985 | ||
986 | /* This routine waits up to 1000 micro-seconds for the previous | |
987 | command to the Cirrus chip to complete and then issues the | |
988 | new command. An error is returned if the previous command | |
989 | didn't finish within the time limit. | |
990 | ||
991 | This function is only called from inside spinlock-protected code. | |
992 | */ | |
993 | static int | |
994 | cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index) | |
995 | { | |
996 | volatile int i; | |
997 | ||
998 | /* Check to see that the previous command has completed */ | |
999 | for(i = 0 ; i < 100 ; i++){ | |
1000 | if (cy_readb(base_addr+(CyCCR<<index)) == 0){ | |
1001 | break; | |
1002 | } | |
1003 | udelay(10L); | |
1004 | } | |
1005 | /* if the CCR never cleared, the previous command | |
1006 | didn't finish within the "reasonable time" */ | |
1007 | if (i == 100) return (-1); | |
1008 | ||
1009 | /* Issue the new command */ | |
1010 | cy_writeb(base_addr+(CyCCR<<index), cmd); | |
1011 | ||
1012 | return(0); | |
1013 | } /* cyy_issue_cmd */ | |
1014 | ||
1015 | #ifdef CONFIG_ISA | |
1016 | /* ISA interrupt detection code */ | |
1017 | static unsigned | |
1018 | detect_isa_irq(void __iomem *address) | |
1019 | { | |
1020 | int irq; | |
1021 | unsigned long irqs, flags; | |
1022 | int save_xir, save_car; | |
1023 | int index = 0; /* IRQ probing is only for ISA */ | |
1024 | ||
1025 | /* forget possible initially masked and pending IRQ */ | |
1026 | irq = probe_irq_off(probe_irq_on()); | |
1027 | ||
1028 | /* Clear interrupts on the board first */ | |
1029 | cy_writeb(address + (Cy_ClrIntr<<index), 0); | |
1030 | /* Cy_ClrIntr is 0x1800 */ | |
1031 | ||
1032 | irqs = probe_irq_on(); | |
1033 | /* Wait ... */ | |
1034 | udelay(5000L); | |
1035 | ||
1036 | /* Enable the Tx interrupts on the CD1400 */ | |
1037 | local_irq_save(flags); | |
1038 | cy_writeb(address + (CyCAR<<index), 0); | |
1039 | cyy_issue_cmd(address, CyCHAN_CTL|CyENB_XMTR, index); | |
1040 | ||
1041 | cy_writeb(address + (CyCAR<<index), 0); | |
1042 | cy_writeb(address + (CySRER<<index), | |
1043 | cy_readb(address + (CySRER<<index)) | CyTxRdy); | |
1044 | local_irq_restore(flags); | |
1045 | ||
1046 | /* Wait ... */ | |
1047 | udelay(5000L); | |
1048 | ||
1049 | /* Check which interrupt is in use */ | |
1050 | irq = probe_irq_off(irqs); | |
1051 | ||
1052 | /* Clean up */ | |
1053 | save_xir = (u_char) cy_readb(address + (CyTIR<<index)); | |
1054 | save_car = cy_readb(address + (CyCAR<<index)); | |
1055 | cy_writeb(address + (CyCAR<<index), (save_xir & 0x3)); | |
1056 | cy_writeb(address + (CySRER<<index), | |
1057 | cy_readb(address + (CySRER<<index)) & ~CyTxRdy); | |
1058 | cy_writeb(address + (CyTIR<<index), (save_xir & 0x3f)); | |
1059 | cy_writeb(address + (CyCAR<<index), (save_car)); | |
1060 | cy_writeb(address + (Cy_ClrIntr<<index), 0); | |
1061 | /* Cy_ClrIntr is 0x1800 */ | |
1062 | ||
1063 | return (irq > 0)? irq : 0; | |
1064 | } | |
1065 | #endif /* CONFIG_ISA */ | |
1066 | ||
1067 | /* The real interrupt service routine is called | |
1068 | whenever the card wants its hand held--chars | |
1069 | received, out buffer empty, modem change, etc. | |
1070 | */ | |
1071 | static irqreturn_t | |
1072 | cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
1073 | { | |
1074 | struct tty_struct *tty; | |
1075 | int status; | |
1076 | struct cyclades_card *cinfo; | |
1077 | struct cyclades_port *info; | |
1078 | void __iomem *base_addr, *card_base_addr; | |
1079 | int chip; | |
1080 | int save_xir, channel, save_car; | |
1081 | char data; | |
1082 | volatile int char_count; | |
1083 | int outch; | |
1084 | int i,j,index; | |
1085 | int too_many; | |
1086 | int had_work; | |
1087 | int mdm_change; | |
1088 | int mdm_status; | |
1089 | ||
1090 | if((cinfo = (struct cyclades_card *)dev_id) == 0){ | |
1091 | #ifdef CY_DEBUG_INTERRUPTS | |
1092 | printk("cyy_interrupt: spurious interrupt %d\n\r", irq); | |
1093 | #endif | |
1094 | return IRQ_NONE; /* spurious interrupt */ | |
1095 | } | |
1096 | ||
1097 | card_base_addr = cinfo->base_addr; | |
1098 | index = cinfo->bus_index; | |
1099 | ||
1100 | ||
1101 | /* This loop checks all chips in the card. Make a note whenever | |
1102 | _any_ chip had some work to do, as this is considered an | |
1103 | indication that there will be more to do. Only when no chip | |
1104 | has any work does this outermost loop exit. | |
1105 | */ | |
1106 | do{ | |
1107 | had_work = 0; | |
1108 | for ( chip = 0 ; chip < cinfo->num_chips ; chip ++) { | |
1109 | base_addr = cinfo->base_addr + (cy_chip_offset[chip]<<index); | |
1110 | too_many = 0; | |
1111 | while ( (status = cy_readb(base_addr+(CySVRR<<index))) != 0x00) { | |
1112 | had_work++; | |
1113 | /* The purpose of the following test is to ensure that | |
1114 | no chip can monopolize the driver. This forces the | |
1115 | chips to be checked in a round-robin fashion (after | |
1116 | draining each of a bunch (1000) of characters). | |
1117 | */ | |
1118 | if(1000<too_many++){ | |
1119 | break; | |
1120 | } | |
1121 | if (status & CySRReceive) { /* reception interrupt */ | |
1122 | #ifdef CY_DEBUG_INTERRUPTS | |
1123 | printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip); | |
1124 | #endif | |
1125 | /* determine the channel & change to that context */ | |
1126 | spin_lock(&cinfo->card_lock); | |
1127 | save_xir = (u_char) cy_readb(base_addr+(CyRIR<<index)); | |
1128 | channel = (u_short ) (save_xir & CyIRChannel); | |
1129 | i = channel + chip * 4 + cinfo->first_line; | |
1130 | info = &cy_port[i]; | |
1131 | info->last_active = jiffies; | |
1132 | save_car = cy_readb(base_addr+(CyCAR<<index)); | |
1133 | cy_writeb(base_addr+(CyCAR<<index), save_xir); | |
1134 | ||
1135 | /* if there is nowhere to put the data, discard it */ | |
1136 | if(info->tty == 0){ | |
1137 | j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask); | |
1138 | if ( j == CyIVRRxEx ) { /* exception */ | |
1139 | data = cy_readb(base_addr+(CyRDSR<<index)); | |
1140 | } else { /* normal character reception */ | |
1141 | char_count = cy_readb(base_addr+(CyRDCR<<index)); | |
1142 | while(char_count--){ | |
1143 | data = cy_readb(base_addr+(CyRDSR<<index)); | |
1144 | } | |
1145 | } | |
1146 | }else{ /* there is an open port for this data */ | |
1147 | tty = info->tty; | |
1148 | j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask); | |
1149 | if ( j == CyIVRRxEx ) { /* exception */ | |
1150 | data = cy_readb(base_addr+(CyRDSR<<index)); | |
1151 | ||
1152 | /* For statistics only */ | |
1153 | if (data & CyBREAK) | |
1154 | info->icount.brk++; | |
1155 | else if(data & CyFRAME) | |
1156 | info->icount.frame++; | |
1157 | else if(data & CyPARITY) | |
1158 | info->icount.parity++; | |
1159 | else if(data & CyOVERRUN) | |
1160 | info->icount.overrun++; | |
1161 | ||
1162 | if(data & info->ignore_status_mask){ | |
1163 | info->icount.rx++; | |
1164 | continue; | |
1165 | } | |
1166 | if (tty->flip.count < TTY_FLIPBUF_SIZE){ | |
1167 | tty->flip.count++; | |
1168 | if (data & info->read_status_mask){ | |
1169 | if(data & CyBREAK){ | |
1170 | *tty->flip.flag_buf_ptr++ = | |
1171 | TTY_BREAK; | |
1172 | *tty->flip.char_buf_ptr++ = | |
1173 | cy_readb(base_addr+(CyRDSR<<index)); | |
1174 | info->icount.rx++; | |
1175 | if (info->flags & ASYNC_SAK){ | |
1176 | do_SAK(tty); | |
1177 | } | |
1178 | }else if(data & CyFRAME){ | |
1179 | *tty->flip.flag_buf_ptr++ = | |
1180 | TTY_FRAME; | |
1181 | *tty->flip.char_buf_ptr++ = | |
1182 | cy_readb(base_addr+(CyRDSR<<index)); | |
1183 | info->icount.rx++; | |
1184 | info->idle_stats.frame_errs++; | |
1185 | }else if(data & CyPARITY){ | |
1186 | *tty->flip.flag_buf_ptr++ = | |
1187 | TTY_PARITY; | |
1188 | *tty->flip.char_buf_ptr++ = | |
1189 | cy_readb(base_addr+(CyRDSR<<index)); | |
1190 | info->icount.rx++; | |
1191 | info->idle_stats.parity_errs++; | |
1192 | }else if(data & CyOVERRUN){ | |
1193 | *tty->flip.flag_buf_ptr++ = | |
1194 | TTY_OVERRUN; | |
1195 | *tty->flip.char_buf_ptr++ = 0; | |
1196 | info->icount.rx++; | |
1197 | /* If the flip buffer itself is | |
1198 | overflowing, we still lose | |
1199 | the next incoming character. | |
1200 | */ | |
1201 | if(tty->flip.count | |
1202 | < TTY_FLIPBUF_SIZE){ | |
1203 | tty->flip.count++; | |
1204 | *tty->flip.flag_buf_ptr++ = | |
1205 | TTY_NORMAL; | |
1206 | *tty->flip.char_buf_ptr++ = | |
1207 | cy_readb(base_addr+(CyRDSR<<index)); | |
1208 | info->icount.rx++; | |
1209 | } | |
1210 | info->idle_stats.overruns++; | |
1211 | /* These two conditions may imply */ | |
1212 | /* a normal read should be done. */ | |
1213 | /* }else if(data & CyTIMEOUT){ */ | |
1214 | /* }else if(data & CySPECHAR){ */ | |
1215 | }else{ | |
1216 | *tty->flip.flag_buf_ptr++ = 0; | |
1217 | *tty->flip.char_buf_ptr++ = 0; | |
1218 | info->icount.rx++; | |
1219 | } | |
1220 | }else{ | |
1221 | *tty->flip.flag_buf_ptr++ = 0; | |
1222 | *tty->flip.char_buf_ptr++ = 0; | |
1223 | info->icount.rx++; | |
1224 | } | |
1225 | }else{ | |
1226 | /* there was a software buffer | |
1227 | overrun and nothing could be | |
1228 | done about it!!! */ | |
1229 | info->icount.buf_overrun++; | |
1230 | info->idle_stats.overruns++; | |
1231 | } | |
1232 | } else { /* normal character reception */ | |
1233 | /* load # chars available from the chip */ | |
1234 | char_count = cy_readb(base_addr+(CyRDCR<<index)); | |
1235 | ||
1236 | #ifdef CY_ENABLE_MONITORING | |
1237 | ++info->mon.int_count; | |
1238 | info->mon.char_count += char_count; | |
1239 | if (char_count > info->mon.char_max) | |
1240 | info->mon.char_max = char_count; | |
1241 | info->mon.char_last = char_count; | |
1242 | #endif | |
1243 | while(char_count--){ | |
1244 | if (tty->flip.count >= TTY_FLIPBUF_SIZE){ | |
1245 | break; | |
1246 | } | |
1247 | tty->flip.count++; | |
1248 | data = cy_readb(base_addr+(CyRDSR<<index)); | |
1249 | *tty->flip.flag_buf_ptr++ = TTY_NORMAL; | |
1250 | *tty->flip.char_buf_ptr++ = data; | |
1251 | info->idle_stats.recv_bytes++; | |
1252 | info->icount.rx++; | |
1253 | #ifdef CY_16Y_HACK | |
1254 | udelay(10L); | |
1255 | #endif | |
1256 | } | |
1257 | info->idle_stats.recv_idle = jiffies; | |
1258 | } | |
1259 | schedule_delayed_work(&tty->flip.work, 1); | |
1260 | } | |
1261 | /* end of service */ | |
1262 | cy_writeb(base_addr+(CyRIR<<index), (save_xir & 0x3f)); | |
1263 | cy_writeb(base_addr+(CyCAR<<index), (save_car)); | |
1264 | spin_unlock(&cinfo->card_lock); | |
1265 | } | |
1266 | ||
1267 | ||
1268 | if (status & CySRTransmit) { /* transmission interrupt */ | |
1269 | /* Since we only get here when the transmit buffer | |
1270 | is empty, we know we can always stuff a dozen | |
1271 | characters. */ | |
1272 | #ifdef CY_DEBUG_INTERRUPTS | |
1273 | printk("cyy_interrupt: xmit intr, chip %d\n\r", chip); | |
1274 | #endif | |
1275 | ||
1276 | /* determine the channel & change to that context */ | |
1277 | spin_lock(&cinfo->card_lock); | |
1278 | save_xir = (u_char) cy_readb(base_addr+(CyTIR<<index)); | |
1279 | channel = (u_short ) (save_xir & CyIRChannel); | |
1280 | i = channel + chip * 4 + cinfo->first_line; | |
1281 | save_car = cy_readb(base_addr+(CyCAR<<index)); | |
1282 | cy_writeb(base_addr+(CyCAR<<index), save_xir); | |
1283 | ||
1284 | /* validate the port# (as configured and open) */ | |
1285 | if( (i < 0) || (NR_PORTS <= i) ){ | |
1286 | cy_writeb(base_addr+(CySRER<<index), | |
1287 | cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy); | |
1288 | goto txend; | |
1289 | } | |
1290 | info = &cy_port[i]; | |
1291 | info->last_active = jiffies; | |
1292 | if(info->tty == 0){ | |
1293 | cy_writeb(base_addr+(CySRER<<index), | |
1294 | cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy); | |
1295 | goto txdone; | |
1296 | } | |
1297 | ||
1298 | /* load the on-chip space for outbound data */ | |
1299 | char_count = info->xmit_fifo_size; | |
1300 | ||
1301 | if(info->x_char) { /* send special char */ | |
1302 | outch = info->x_char; | |
1303 | cy_writeb(base_addr+(CyTDR<<index), outch); | |
1304 | char_count--; | |
1305 | info->icount.tx++; | |
1306 | info->x_char = 0; | |
1307 | } | |
1308 | ||
1309 | if (info->breakon || info->breakoff) { | |
1310 | if (info->breakon) { | |
1311 | cy_writeb(base_addr + (CyTDR<<index), 0); | |
1312 | cy_writeb(base_addr + (CyTDR<<index), 0x81); | |
1313 | info->breakon = 0; | |
1314 | char_count -= 2; | |
1315 | } | |
1316 | if (info->breakoff) { | |
1317 | cy_writeb(base_addr + (CyTDR<<index), 0); | |
1318 | cy_writeb(base_addr + (CyTDR<<index), 0x83); | |
1319 | info->breakoff = 0; | |
1320 | char_count -= 2; | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | while (char_count-- > 0){ | |
1325 | if (!info->xmit_cnt){ | |
1326 | if (cy_readb(base_addr+(CySRER<<index))&CyTxMpty) { | |
1327 | cy_writeb(base_addr+(CySRER<<index), | |
1328 | cy_readb(base_addr+(CySRER<<index)) & | |
1329 | ~CyTxMpty); | |
1330 | } else { | |
1331 | cy_writeb(base_addr+(CySRER<<index), | |
1332 | ((cy_readb(base_addr+(CySRER<<index)) | |
1333 | & ~CyTxRdy) | |
1334 | | CyTxMpty)); | |
1335 | } | |
1336 | goto txdone; | |
1337 | } | |
1338 | if (info->xmit_buf == 0){ | |
1339 | cy_writeb(base_addr+(CySRER<<index), | |
1340 | cy_readb(base_addr+(CySRER<<index)) & | |
1341 | ~CyTxRdy); | |
1342 | goto txdone; | |
1343 | } | |
1344 | if (info->tty->stopped || info->tty->hw_stopped){ | |
1345 | cy_writeb(base_addr+(CySRER<<index), | |
1346 | cy_readb(base_addr+(CySRER<<index)) & | |
1347 | ~CyTxRdy); | |
1348 | goto txdone; | |
1349 | } | |
1350 | /* Because the Embedded Transmit Commands have | |
1351 | been enabled, we must check to see if the | |
1352 | escape character, NULL, is being sent. If it | |
1353 | is, we must ensure that there is room for it | |
1354 | to be doubled in the output stream. Therefore | |
1355 | we no longer advance the pointer when the | |
1356 | character is fetched, but rather wait until | |
1357 | after the check for a NULL output character. | |
1358 | This is necessary because there may not be | |
1359 | room for the two chars needed to send a NULL.) | |
1360 | */ | |
1361 | outch = info->xmit_buf[info->xmit_tail]; | |
1362 | if( outch ){ | |
1363 | info->xmit_cnt--; | |
1364 | info->xmit_tail = (info->xmit_tail + 1) | |
1365 | & (SERIAL_XMIT_SIZE - 1); | |
1366 | cy_writeb(base_addr+(CyTDR<<index), outch); | |
1367 | info->icount.tx++; | |
1368 | }else{ | |
1369 | if(char_count > 1){ | |
1370 | info->xmit_cnt--; | |
1371 | info->xmit_tail = (info->xmit_tail + 1) | |
1372 | & (SERIAL_XMIT_SIZE - 1); | |
1373 | cy_writeb(base_addr+(CyTDR<<index), | |
1374 | outch); | |
1375 | cy_writeb(base_addr+(CyTDR<<index), 0); | |
1376 | info->icount.tx++; | |
1377 | char_count--; | |
1378 | }else{ | |
1379 | } | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | txdone: | |
1384 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
1385 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1386 | } | |
1387 | txend: | |
1388 | /* end of service */ | |
1389 | cy_writeb(base_addr+(CyTIR<<index), | |
1390 | (save_xir & 0x3f)); | |
1391 | cy_writeb(base_addr+(CyCAR<<index), (save_car)); | |
1392 | spin_unlock(&cinfo->card_lock); | |
1393 | } | |
1394 | ||
1395 | if (status & CySRModem) { /* modem interrupt */ | |
1396 | ||
1397 | /* determine the channel & change to that context */ | |
1398 | spin_lock(&cinfo->card_lock); | |
1399 | save_xir = (u_char) cy_readb(base_addr+(CyMIR<<index)); | |
1400 | channel = (u_short ) (save_xir & CyIRChannel); | |
1401 | info = &cy_port[channel + chip * 4 | |
1402 | + cinfo->first_line]; | |
1403 | info->last_active = jiffies; | |
1404 | save_car = cy_readb(base_addr+(CyCAR<<index)); | |
1405 | cy_writeb(base_addr+(CyCAR<<index), save_xir); | |
1406 | ||
1407 | mdm_change = cy_readb(base_addr+(CyMISR<<index)); | |
1408 | mdm_status = cy_readb(base_addr+(CyMSVR1<<index)); | |
1409 | ||
1410 | if(info->tty == 0){/* no place for data, ignore it*/ | |
1411 | ; | |
1412 | }else{ | |
1413 | if (mdm_change & CyANY_DELTA) { | |
1414 | /* For statistics only */ | |
1415 | if (mdm_change & CyDCD) info->icount.dcd++; | |
1416 | if (mdm_change & CyCTS) info->icount.cts++; | |
1417 | if (mdm_change & CyDSR) info->icount.dsr++; | |
1418 | if (mdm_change & CyRI) info->icount.rng++; | |
1419 | ||
1420 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
1421 | } | |
1422 | ||
1423 | if((mdm_change & CyDCD) | |
1424 | && (info->flags & ASYNC_CHECK_CD)){ | |
1425 | if(mdm_status & CyDCD){ | |
1426 | cy_sched_event(info, | |
1427 | Cy_EVENT_OPEN_WAKEUP); | |
1428 | }else{ | |
1429 | cy_sched_event(info, | |
1430 | Cy_EVENT_HANGUP); | |
1431 | } | |
1432 | } | |
1433 | if((mdm_change & CyCTS) | |
1434 | && (info->flags & ASYNC_CTS_FLOW)){ | |
1435 | if(info->tty->hw_stopped){ | |
1436 | if(mdm_status & CyCTS){ | |
1437 | /* cy_start isn't used | |
1438 | because... !!! */ | |
1439 | info->tty->hw_stopped = 0; | |
1440 | cy_writeb(base_addr+(CySRER<<index), | |
1441 | cy_readb(base_addr+(CySRER<<index)) | | |
1442 | CyTxRdy); | |
1443 | cy_sched_event(info, | |
1444 | Cy_EVENT_WRITE_WAKEUP); | |
1445 | } | |
1446 | }else{ | |
1447 | if(!(mdm_status & CyCTS)){ | |
1448 | /* cy_stop isn't used | |
1449 | because ... !!! */ | |
1450 | info->tty->hw_stopped = 1; | |
1451 | cy_writeb(base_addr+(CySRER<<index), | |
1452 | cy_readb(base_addr+(CySRER<<index)) & | |
1453 | ~CyTxRdy); | |
1454 | } | |
1455 | } | |
1456 | } | |
1457 | if(mdm_change & CyDSR){ | |
1458 | } | |
1459 | if(mdm_change & CyRI){ | |
1460 | } | |
1461 | } | |
1462 | /* end of service */ | |
1463 | cy_writeb(base_addr+(CyMIR<<index), | |
1464 | (save_xir & 0x3f)); | |
1465 | cy_writeb(base_addr+(CyCAR<<index), save_car); | |
1466 | spin_unlock(&cinfo->card_lock); | |
1467 | } | |
1468 | } /* end while status != 0 */ | |
1469 | } /* end loop for chips... */ | |
1470 | } while(had_work); | |
1471 | ||
1472 | /* clear interrupts */ | |
1473 | spin_lock(&cinfo->card_lock); | |
1474 | cy_writeb(card_base_addr + (Cy_ClrIntr<<index), 0); | |
1475 | /* Cy_ClrIntr is 0x1800 */ | |
1476 | spin_unlock(&cinfo->card_lock); | |
1477 | return IRQ_HANDLED; | |
1478 | } /* cyy_interrupt */ | |
1479 | ||
1480 | /***********************************************************/ | |
1481 | /********* End of block of Cyclom-Y specific code **********/ | |
1482 | /******** Start of block of Cyclades-Z specific code *********/ | |
1483 | /***********************************************************/ | |
1484 | ||
1485 | static int | |
1486 | cyz_fetch_msg( struct cyclades_card *cinfo, | |
1487 | uclong *channel, ucchar *cmd, uclong *param) | |
1488 | { | |
1489 | struct FIRM_ID __iomem *firm_id; | |
1490 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1491 | struct BOARD_CTRL __iomem *board_ctrl; | |
1492 | unsigned long loc_doorbell; | |
1493 | ||
1494 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1495 | if (!ISZLOADED(*cinfo)){ | |
1496 | return (-1); | |
1497 | } | |
1498 | zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
1499 | board_ctrl = &zfw_ctrl->board_ctrl; | |
1500 | ||
1501 | loc_doorbell = cy_readl(&((struct RUNTIME_9060 __iomem *) | |
1502 | (cinfo->ctl_addr))->loc_doorbell); | |
1503 | if (loc_doorbell){ | |
1504 | *cmd = (char)(0xff & loc_doorbell); | |
1505 | *channel = cy_readl(&board_ctrl->fwcmd_channel); | |
1506 | *param = (uclong)cy_readl(&board_ctrl->fwcmd_param); | |
1507 | cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->loc_doorbell, | |
1508 | 0xffffffff); | |
1509 | return 1; | |
1510 | } | |
1511 | return 0; | |
1512 | } /* cyz_fetch_msg */ | |
1513 | ||
1514 | static int | |
1515 | cyz_issue_cmd( struct cyclades_card *cinfo, | |
1516 | uclong channel, ucchar cmd, uclong param) | |
1517 | { | |
1518 | struct FIRM_ID __iomem *firm_id; | |
1519 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1520 | struct BOARD_CTRL __iomem *board_ctrl; | |
1521 | unsigned long __iomem *pci_doorbell; | |
1522 | int index; | |
1523 | ||
1524 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1525 | if (!ISZLOADED(*cinfo)){ | |
1526 | return (-1); | |
1527 | } | |
1528 | zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
1529 | board_ctrl = &zfw_ctrl->board_ctrl; | |
1530 | ||
1531 | index = 0; | |
1532 | pci_doorbell = &((struct RUNTIME_9060 __iomem *) (cinfo->ctl_addr))->pci_doorbell; | |
1533 | while( (cy_readl(pci_doorbell) & 0xff) != 0){ | |
1534 | if (index++ == 1000){ | |
1535 | return((int)(cy_readl(pci_doorbell) & 0xff)); | |
1536 | } | |
1537 | udelay(50L); | |
1538 | } | |
1539 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
1540 | cy_writel(&board_ctrl->hcmd_param , param); | |
1541 | cy_writel(pci_doorbell, (long)cmd); | |
1542 | ||
1543 | return(0); | |
1544 | } /* cyz_issue_cmd */ | |
1545 | ||
1546 | static void | |
1547 | cyz_handle_rx(struct cyclades_port *info, | |
1548 | volatile struct CH_CTRL __iomem *ch_ctrl, | |
1549 | volatile struct BUF_CTRL __iomem *buf_ctrl) | |
1550 | { | |
1551 | struct cyclades_card *cinfo = &cy_card[info->card]; | |
1552 | struct tty_struct *tty = info->tty; | |
1553 | volatile int char_count; | |
1554 | #ifdef BLOCKMOVE | |
1555 | int small_count; | |
1556 | #else | |
1557 | char data; | |
1558 | #endif | |
1559 | volatile uclong rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; | |
1560 | ||
1561 | rx_get = new_rx_get = cy_readl(&buf_ctrl->rx_get); | |
1562 | rx_put = cy_readl(&buf_ctrl->rx_put); | |
1563 | rx_bufsize = cy_readl(&buf_ctrl->rx_bufsize); | |
1564 | rx_bufaddr = cy_readl(&buf_ctrl->rx_bufaddr); | |
1565 | if (rx_put >= rx_get) | |
1566 | char_count = rx_put - rx_get; | |
1567 | else | |
1568 | char_count = rx_put - rx_get + rx_bufsize; | |
1569 | ||
1570 | if ( char_count ) { | |
1571 | info->last_active = jiffies; | |
1572 | info->jiffies[1] = jiffies; | |
1573 | ||
1574 | #ifdef CY_ENABLE_MONITORING | |
1575 | info->mon.int_count++; | |
1576 | info->mon.char_count += char_count; | |
1577 | if (char_count > info->mon.char_max) | |
1578 | info->mon.char_max = char_count; | |
1579 | info->mon.char_last = char_count; | |
1580 | #endif | |
1581 | if(tty == 0){ | |
1582 | /* flush received characters */ | |
1583 | new_rx_get = (new_rx_get + char_count) & (rx_bufsize - 1); | |
1584 | info->rflush_count++; | |
1585 | }else{ | |
1586 | #ifdef BLOCKMOVE | |
1587 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) | |
1588 | for performance, but because of buffer boundaries, there | |
1589 | may be several steps to the operation */ | |
1590 | while(0 < (small_count = | |
1591 | min_t(unsigned int, (rx_bufsize - new_rx_get), | |
1592 | min_t(unsigned int, (TTY_FLIPBUF_SIZE - tty->flip.count), char_count)) | |
1593 | )) { | |
1594 | memcpy_fromio(tty->flip.char_buf_ptr, | |
1595 | (char *)(cinfo->base_addr | |
1596 | + rx_bufaddr + new_rx_get), | |
1597 | small_count); | |
1598 | ||
1599 | tty->flip.char_buf_ptr += small_count; | |
1600 | memset(tty->flip.flag_buf_ptr, TTY_NORMAL, small_count); | |
1601 | tty->flip.flag_buf_ptr += small_count; | |
1602 | new_rx_get = (new_rx_get + small_count) & (rx_bufsize - 1); | |
1603 | char_count -= small_count; | |
1604 | info->icount.rx += small_count; | |
1605 | info->idle_stats.recv_bytes += small_count; | |
1606 | tty->flip.count += small_count; | |
1607 | } | |
1608 | #else | |
1609 | while(char_count--){ | |
1610 | if (tty->flip.count >= N_TTY_BUF_SIZE - tty->read_cnt) | |
1611 | break; | |
1612 | ||
1613 | if (tty->flip.count >= TTY_FLIPBUF_SIZE) | |
1614 | break; | |
1615 | ||
1616 | data = cy_readb(cinfo->base_addr + rx_bufaddr + new_rx_get); | |
1617 | new_rx_get = (new_rx_get + 1) & (rx_bufsize - 1); | |
1618 | tty->flip.count++; | |
1619 | *tty->flip.flag_buf_ptr++ = TTY_NORMAL; | |
1620 | *tty->flip.char_buf_ptr++ = data; | |
1621 | info->idle_stats.recv_bytes++; | |
1622 | info->icount.rx++; | |
1623 | } | |
1624 | #endif | |
1625 | #ifdef CONFIG_CYZ_INTR | |
1626 | /* Recalculate the number of chars in the RX buffer and issue | |
1627 | a cmd in case it's higher than the RX high water mark */ | |
1628 | rx_put = cy_readl(&buf_ctrl->rx_put); | |
1629 | if (rx_put >= rx_get) | |
1630 | char_count = rx_put - rx_get; | |
1631 | else | |
1632 | char_count = rx_put - rx_get + rx_bufsize; | |
1633 | if(char_count >= cy_readl(&buf_ctrl->rx_threshold)) { | |
1634 | cy_sched_event(info, Cy_EVENT_Z_RX_FULL); | |
1635 | } | |
1636 | #endif | |
1637 | info->idle_stats.recv_idle = jiffies; | |
1638 | schedule_delayed_work(&tty->flip.work, 1); | |
1639 | } | |
1640 | /* Update rx_get */ | |
1641 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | static void | |
1646 | cyz_handle_tx(struct cyclades_port *info, | |
1647 | volatile struct CH_CTRL __iomem *ch_ctrl, | |
1648 | volatile struct BUF_CTRL __iomem *buf_ctrl) | |
1649 | { | |
1650 | struct cyclades_card *cinfo = &cy_card[info->card]; | |
1651 | struct tty_struct *tty = info->tty; | |
1652 | char data; | |
1653 | volatile int char_count; | |
1654 | #ifdef BLOCKMOVE | |
1655 | int small_count; | |
1656 | #endif | |
1657 | volatile uclong tx_put, tx_get, tx_bufsize, tx_bufaddr; | |
1658 | ||
1659 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ | |
1660 | return; | |
1661 | ||
1662 | tx_get = cy_readl(&buf_ctrl->tx_get); | |
1663 | tx_put = cy_readl(&buf_ctrl->tx_put); | |
1664 | tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize); | |
1665 | tx_bufaddr = cy_readl(&buf_ctrl->tx_bufaddr); | |
1666 | if (tx_put >= tx_get) | |
1667 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1668 | else | |
1669 | char_count = tx_get - tx_put - 1; | |
1670 | ||
1671 | if ( char_count ) { | |
1672 | ||
1673 | if( tty == 0 ){ | |
1674 | goto ztxdone; | |
1675 | } | |
1676 | ||
1677 | if(info->x_char) { /* send special char */ | |
1678 | data = info->x_char; | |
1679 | ||
1680 | cy_writeb((cinfo->base_addr + tx_bufaddr + tx_put), data); | |
1681 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1682 | info->x_char = 0; | |
1683 | char_count--; | |
1684 | info->icount.tx++; | |
1685 | info->last_active = jiffies; | |
1686 | info->jiffies[2] = jiffies; | |
1687 | } | |
1688 | #ifdef BLOCKMOVE | |
1689 | while(0 < (small_count = | |
1690 | min_t(unsigned int, (tx_bufsize - tx_put), | |
1691 | min_t(unsigned int, (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1692 | min_t(unsigned int, info->xmit_cnt, char_count))))) { | |
1693 | ||
1694 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put), | |
1695 | &info->xmit_buf[info->xmit_tail], | |
1696 | small_count); | |
1697 | ||
1698 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1699 | char_count -= small_count; | |
1700 | info->icount.tx += small_count; | |
1701 | info->xmit_cnt -= small_count; | |
1702 | info->xmit_tail = | |
1703 | (info->xmit_tail + small_count) & (SERIAL_XMIT_SIZE - 1); | |
1704 | info->last_active = jiffies; | |
1705 | info->jiffies[2] = jiffies; | |
1706 | } | |
1707 | #else | |
1708 | while (info->xmit_cnt && char_count){ | |
1709 | data = info->xmit_buf[info->xmit_tail]; | |
1710 | info->xmit_cnt--; | |
1711 | info->xmit_tail = (info->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); | |
1712 | ||
1713 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1714 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1715 | char_count--; | |
1716 | info->icount.tx++; | |
1717 | info->last_active = jiffies; | |
1718 | info->jiffies[2] = jiffies; | |
1719 | } | |
1720 | #endif | |
1721 | ztxdone: | |
1722 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
1723 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1724 | } | |
1725 | /* Update tx_put */ | |
1726 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1727 | } | |
1728 | } | |
1729 | ||
1730 | static void | |
1731 | cyz_handle_cmd(struct cyclades_card *cinfo) | |
1732 | { | |
1733 | struct tty_struct *tty; | |
1734 | struct cyclades_port *info; | |
1735 | static volatile struct FIRM_ID __iomem *firm_id; | |
1736 | static volatile struct ZFW_CTRL __iomem *zfw_ctrl; | |
1737 | static volatile struct BOARD_CTRL __iomem *board_ctrl; | |
1738 | static volatile struct CH_CTRL __iomem *ch_ctrl; | |
1739 | static volatile struct BUF_CTRL __iomem *buf_ctrl; | |
1740 | uclong channel; | |
1741 | ucchar cmd; | |
1742 | uclong param; | |
1743 | uclong hw_ver, fw_ver; | |
1744 | int special_count; | |
1745 | int delta_count; | |
1746 | ||
1747 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1748 | zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
1749 | board_ctrl = &zfw_ctrl->board_ctrl; | |
1750 | fw_ver = cy_readl(&board_ctrl->fw_version); | |
1751 | hw_ver = cy_readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->mail_box_0); | |
1752 | ||
1753 | ||
1754 | while(cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1755 | special_count = 0; | |
1756 | delta_count = 0; | |
1757 | info = &cy_port[channel + cinfo->first_line]; | |
1758 | if((tty = info->tty) == 0) { | |
1759 | continue; | |
1760 | } | |
1761 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); | |
1762 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
1763 | ||
1764 | switch(cmd) { | |
1765 | case C_CM_PR_ERROR: | |
1766 | tty->flip.count++; | |
1767 | *tty->flip.flag_buf_ptr++ = TTY_PARITY; | |
1768 | *tty->flip.char_buf_ptr++ = 0; | |
1769 | info->icount.rx++; | |
1770 | special_count++; | |
1771 | break; | |
1772 | case C_CM_FR_ERROR: | |
1773 | tty->flip.count++; | |
1774 | *tty->flip.flag_buf_ptr++ = TTY_FRAME; | |
1775 | *tty->flip.char_buf_ptr++ = 0; | |
1776 | info->icount.rx++; | |
1777 | special_count++; | |
1778 | break; | |
1779 | case C_CM_RXBRK: | |
1780 | tty->flip.count++; | |
1781 | *tty->flip.flag_buf_ptr++ = TTY_BREAK; | |
1782 | *tty->flip.char_buf_ptr++ = 0; | |
1783 | info->icount.rx++; | |
1784 | special_count++; | |
1785 | break; | |
1786 | case C_CM_MDCD: | |
1787 | info->icount.dcd++; | |
1788 | delta_count++; | |
1789 | if (info->flags & ASYNC_CHECK_CD){ | |
1790 | if ((fw_ver > 241 ? | |
1791 | ((u_long)param) : | |
1792 | cy_readl(&ch_ctrl->rs_status)) & C_RS_DCD) { | |
1793 | cy_sched_event(info, Cy_EVENT_OPEN_WAKEUP); | |
1794 | }else{ | |
1795 | cy_sched_event(info, Cy_EVENT_HANGUP); | |
1796 | } | |
1797 | } | |
1798 | break; | |
1799 | case C_CM_MCTS: | |
1800 | info->icount.cts++; | |
1801 | delta_count++; | |
1802 | break; | |
1803 | case C_CM_MRI: | |
1804 | info->icount.rng++; | |
1805 | delta_count++; | |
1806 | break; | |
1807 | case C_CM_MDSR: | |
1808 | info->icount.dsr++; | |
1809 | delta_count++; | |
1810 | break; | |
1811 | #ifdef Z_WAKE | |
1812 | case C_CM_IOCTLW: | |
1813 | cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP); | |
1814 | break; | |
1815 | #endif | |
1816 | #ifdef CONFIG_CYZ_INTR | |
1817 | case C_CM_RXHIWM: | |
1818 | case C_CM_RXNNDT: | |
1819 | case C_CM_INTBACK2: | |
1820 | /* Reception Interrupt */ | |
1821 | #ifdef CY_DEBUG_INTERRUPTS | |
1822 | printk("cyz_interrupt: rcvd intr, card %d, port %ld\n\r", | |
1823 | info->card, channel); | |
1824 | #endif | |
1825 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); | |
1826 | break; | |
1827 | case C_CM_TXBEMPTY: | |
1828 | case C_CM_TXLOWWM: | |
1829 | case C_CM_INTBACK: | |
1830 | /* Transmission Interrupt */ | |
1831 | #ifdef CY_DEBUG_INTERRUPTS | |
1832 | printk("cyz_interrupt: xmit intr, card %d, port %ld\n\r", | |
1833 | info->card, channel); | |
1834 | #endif | |
1835 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); | |
1836 | break; | |
1837 | #endif /* CONFIG_CYZ_INTR */ | |
1838 | case C_CM_FATAL: | |
1839 | /* should do something with this !!! */ | |
1840 | break; | |
1841 | default: | |
1842 | break; | |
1843 | } | |
1844 | if(delta_count) | |
1845 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
1846 | if(special_count) | |
1847 | schedule_delayed_work(&tty->flip.work, 1); | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | #ifdef CONFIG_CYZ_INTR | |
1852 | static irqreturn_t | |
1853 | cyz_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
1854 | { | |
1855 | struct cyclades_card *cinfo; | |
1856 | ||
1857 | if((cinfo = (struct cyclades_card *)dev_id) == 0){ | |
1858 | #ifdef CY_DEBUG_INTERRUPTS | |
1859 | printk("cyz_interrupt: spurious interrupt %d\n\r", irq); | |
1860 | #endif | |
1861 | return IRQ_NONE; /* spurious interrupt */ | |
1862 | } | |
1863 | ||
1864 | if (!ISZLOADED(*cinfo)) { | |
1865 | #ifdef CY_DEBUG_INTERRUPTS | |
1866 | printk("cyz_interrupt: board not yet loaded (IRQ%d).\n\r", irq); | |
1867 | #endif | |
1868 | return IRQ_NONE; | |
1869 | } | |
1870 | ||
1871 | /* Handle the interrupts */ | |
1872 | cyz_handle_cmd(cinfo); | |
1873 | ||
1874 | return IRQ_HANDLED; | |
1875 | } /* cyz_interrupt */ | |
1876 | ||
1877 | static void | |
1878 | cyz_rx_restart(unsigned long arg) | |
1879 | { | |
1880 | struct cyclades_port *info = (struct cyclades_port *)arg; | |
1881 | int retval; | |
1882 | int card = info->card; | |
1883 | uclong channel = (info->line) - (cy_card[card].first_line); | |
1884 | unsigned long flags; | |
1885 | ||
1886 | CY_LOCK(info, flags); | |
1887 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK2, 0L); | |
1888 | if (retval != 0){ | |
1889 | printk("cyc:cyz_rx_restart retval on ttyC%d was %x\n", | |
1890 | info->line, retval); | |
1891 | } | |
1892 | cyz_rx_full_timer[info->line].function = NULL; | |
1893 | CY_UNLOCK(info, flags); | |
1894 | } | |
1895 | ||
1896 | #else /* CONFIG_CYZ_INTR */ | |
1897 | ||
1898 | static void | |
1899 | cyz_poll(unsigned long arg) | |
1900 | { | |
1901 | struct cyclades_card *cinfo; | |
1902 | struct cyclades_port *info; | |
1903 | struct tty_struct *tty; | |
1904 | static volatile struct FIRM_ID *firm_id; | |
1905 | static volatile struct ZFW_CTRL *zfw_ctrl; | |
1906 | static volatile struct BOARD_CTRL *board_ctrl; | |
1907 | static volatile struct CH_CTRL *ch_ctrl; | |
1908 | static volatile struct BUF_CTRL *buf_ctrl; | |
1909 | int card, port; | |
1910 | ||
1911 | cyz_timerlist.expires = jiffies + (HZ); | |
1912 | for (card = 0 ; card < NR_CARDS ; card++){ | |
1913 | cinfo = &cy_card[card]; | |
1914 | ||
1915 | if (!IS_CYC_Z(*cinfo)) continue; | |
1916 | if (!ISZLOADED(*cinfo)) continue; | |
1917 | ||
1918 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1919 | zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
1920 | board_ctrl = &(zfw_ctrl->board_ctrl); | |
1921 | ||
1922 | /* Skip first polling cycle to avoid racing conditions with the FW */ | |
1923 | if (!cinfo->intr_enabled) { | |
1924 | cinfo->nports = (int) cy_readl(&board_ctrl->n_channel); | |
1925 | cinfo->intr_enabled = 1; | |
1926 | continue; | |
1927 | } | |
1928 | ||
1929 | cyz_handle_cmd(cinfo); | |
1930 | ||
1931 | for (port = 0 ; port < cinfo->nports ; port++) { | |
1932 | info = &cy_port[ port + cinfo->first_line ]; | |
1933 | tty = info->tty; | |
1934 | ch_ctrl = &(zfw_ctrl->ch_ctrl[port]); | |
1935 | buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); | |
1936 | ||
1937 | if (!info->throttle) | |
1938 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); | |
1939 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); | |
1940 | } | |
1941 | /* poll every 'cyz_polling_cycle' period */ | |
1942 | cyz_timerlist.expires = jiffies + cyz_polling_cycle; | |
1943 | } | |
1944 | add_timer(&cyz_timerlist); | |
1945 | ||
1946 | return; | |
1947 | } /* cyz_poll */ | |
1948 | ||
1949 | #endif /* CONFIG_CYZ_INTR */ | |
1950 | ||
1951 | /********** End of block of Cyclades-Z specific code *********/ | |
1952 | /***********************************************************/ | |
1953 | ||
1954 | ||
1955 | /* This is called whenever a port becomes active; | |
1956 | interrupts are enabled and DTR & RTS are turned on. | |
1957 | */ | |
1958 | static int | |
1959 | startup(struct cyclades_port * info) | |
1960 | { | |
1961 | unsigned long flags; | |
1962 | int retval = 0; | |
1963 | void __iomem *base_addr; | |
1964 | int card,chip,channel,index; | |
1965 | unsigned long page; | |
1966 | ||
1967 | card = info->card; | |
1968 | channel = (info->line) - (cy_card[card].first_line); | |
1969 | ||
1970 | page = get_zeroed_page(GFP_KERNEL); | |
1971 | if (!page) | |
1972 | return -ENOMEM; | |
1973 | ||
1974 | CY_LOCK(info, flags); | |
1975 | ||
1976 | if (info->flags & ASYNC_INITIALIZED){ | |
1977 | free_page(page); | |
1978 | goto errout; | |
1979 | } | |
1980 | ||
1981 | if (!info->type){ | |
1982 | if (info->tty){ | |
1983 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
1984 | } | |
1985 | free_page(page); | |
1986 | goto errout; | |
1987 | } | |
1988 | ||
1989 | if (info->xmit_buf) | |
1990 | free_page(page); | |
1991 | else | |
1992 | info->xmit_buf = (unsigned char *) page; | |
1993 | ||
1994 | CY_UNLOCK(info, flags); | |
1995 | ||
1996 | set_line_char(info); | |
1997 | ||
1998 | if (!IS_CYC_Z(cy_card[card])) { | |
1999 | chip = channel>>2; | |
2000 | channel &= 0x03; | |
2001 | index = cy_card[card].bus_index; | |
2002 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
2003 | ||
2004 | #ifdef CY_DEBUG_OPEN | |
2005 | printk("cyc startup card %d, chip %d, channel %d, base_addr %lx\n", | |
2006 | card, chip, channel, (long)base_addr);/**/ | |
2007 | #endif | |
2008 | ||
2009 | CY_LOCK(info, flags); | |
2010 | ||
2011 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
2012 | ||
2013 | cy_writeb(base_addr+(CyRTPR<<index), (info->default_timeout | |
2014 | ? info->default_timeout : 0x02)); /* 10ms rx timeout */ | |
2015 | ||
2016 | cyy_issue_cmd(base_addr,CyCHAN_CTL|CyENB_RCVR|CyENB_XMTR,index); | |
2017 | ||
2018 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
2019 | cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); | |
2020 | cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); | |
2021 | ||
2022 | #ifdef CY_DEBUG_DTR | |
2023 | printk("cyc:startup raising DTR\n"); | |
2024 | printk(" status: 0x%x, 0x%x\n", | |
2025 | cy_readb(base_addr+(CyMSVR1<<index)), | |
2026 | cy_readb(base_addr+(CyMSVR2<<index))); | |
2027 | #endif | |
2028 | ||
2029 | cy_writeb(base_addr+(CySRER<<index), | |
2030 | cy_readb(base_addr+(CySRER<<index)) | CyRxData); | |
2031 | info->flags |= ASYNC_INITIALIZED; | |
2032 | ||
2033 | if (info->tty){ | |
2034 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2035 | } | |
2036 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2037 | info->breakon = info->breakoff = 0; | |
2038 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2039 | info->idle_stats.in_use = | |
2040 | info->idle_stats.recv_idle = | |
2041 | info->idle_stats.xmit_idle = jiffies; | |
2042 | ||
2043 | CY_UNLOCK(info, flags); | |
2044 | ||
2045 | } else { | |
2046 | struct FIRM_ID __iomem *firm_id; | |
2047 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2048 | struct BOARD_CTRL __iomem *board_ctrl; | |
2049 | struct CH_CTRL __iomem *ch_ctrl; | |
2050 | int retval; | |
2051 | ||
2052 | base_addr = cy_card[card].base_addr; | |
2053 | ||
2054 | firm_id = base_addr + ID_ADDRESS; | |
2055 | if (!ISZLOADED(cy_card[card])){ | |
2056 | return -ENODEV; | |
2057 | } | |
2058 | ||
2059 | zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
2060 | board_ctrl = &zfw_ctrl->board_ctrl; | |
2061 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
2062 | ||
2063 | #ifdef CY_DEBUG_OPEN | |
2064 | printk("cyc startup Z card %d, channel %d, base_addr %lx\n", | |
2065 | card, channel, (long)base_addr);/**/ | |
2066 | #endif | |
2067 | ||
2068 | CY_LOCK(info, flags); | |
2069 | ||
2070 | cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); | |
2071 | #ifdef Z_WAKE | |
2072 | #ifdef CONFIG_CYZ_INTR | |
2073 | cy_writel(&ch_ctrl[channel].intr_enable, | |
2074 | C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT| | |
2075 | C_IN_IOCTLW| | |
2076 | C_IN_MDCD); | |
2077 | #else | |
2078 | cy_writel(&ch_ctrl[channel].intr_enable, | |
2079 | C_IN_IOCTLW| | |
2080 | C_IN_MDCD); | |
2081 | #endif /* CONFIG_CYZ_INTR */ | |
2082 | #else | |
2083 | #ifdef CONFIG_CYZ_INTR | |
2084 | cy_writel(&ch_ctrl[channel].intr_enable, | |
2085 | C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT| | |
2086 | C_IN_MDCD); | |
2087 | #else | |
2088 | cy_writel(&ch_ctrl[channel].intr_enable, | |
2089 | C_IN_MDCD); | |
2090 | #endif /* CONFIG_CYZ_INTR */ | |
2091 | #endif /* Z_WAKE */ | |
2092 | ||
2093 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L); | |
2094 | if (retval != 0){ | |
2095 | printk("cyc:startup(1) retval on ttyC%d was %x\n", | |
2096 | info->line, retval); | |
2097 | } | |
2098 | ||
2099 | /* Flush RX buffers before raising DTR and RTS */ | |
2100 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_RX, 0L); | |
2101 | if (retval != 0){ | |
2102 | printk("cyc:startup(2) retval on ttyC%d was %x\n", | |
2103 | info->line, retval); | |
2104 | } | |
2105 | ||
2106 | /* set timeout !!! */ | |
2107 | /* set RTS and DTR !!! */ | |
2108 | cy_writel(&ch_ctrl[channel].rs_control, | |
2109 | cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | C_RS_DTR) ; | |
2110 | retval = cyz_issue_cmd(&cy_card[info->card], | |
2111 | channel, C_CM_IOCTLM, 0L); | |
2112 | if (retval != 0){ | |
2113 | printk("cyc:startup(3) retval on ttyC%d was %x\n", | |
2114 | info->line, retval); | |
2115 | } | |
2116 | #ifdef CY_DEBUG_DTR | |
2117 | printk("cyc:startup raising Z DTR\n"); | |
2118 | #endif | |
2119 | ||
2120 | /* enable send, recv, modem !!! */ | |
2121 | ||
2122 | info->flags |= ASYNC_INITIALIZED; | |
2123 | if (info->tty){ | |
2124 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2125 | } | |
2126 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2127 | info->breakon = info->breakoff = 0; | |
2128 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2129 | info->idle_stats.in_use = | |
2130 | info->idle_stats.recv_idle = | |
2131 | info->idle_stats.xmit_idle = jiffies; | |
2132 | ||
2133 | CY_UNLOCK(info, flags); | |
2134 | } | |
2135 | ||
2136 | #ifdef CY_DEBUG_OPEN | |
2137 | printk(" cyc startup done\n"); | |
2138 | #endif | |
2139 | return 0; | |
2140 | ||
2141 | errout: | |
2142 | CY_UNLOCK(info, flags); | |
2143 | return retval; | |
2144 | } /* startup */ | |
2145 | ||
2146 | ||
2147 | static void | |
2148 | start_xmit( struct cyclades_port *info ) | |
2149 | { | |
2150 | unsigned long flags; | |
2151 | void __iomem *base_addr; | |
2152 | int card,chip,channel,index; | |
2153 | ||
2154 | card = info->card; | |
2155 | channel = (info->line) - (cy_card[card].first_line); | |
2156 | if (!IS_CYC_Z(cy_card[card])) { | |
2157 | chip = channel>>2; | |
2158 | channel &= 0x03; | |
2159 | index = cy_card[card].bus_index; | |
2160 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
2161 | ||
2162 | CY_LOCK(info, flags); | |
2163 | cy_writeb(base_addr+(CyCAR<<index), channel); | |
2164 | cy_writeb(base_addr+(CySRER<<index), | |
2165 | cy_readb(base_addr+(CySRER<<index)) | CyTxRdy); | |
2166 | CY_UNLOCK(info, flags); | |
2167 | } else { | |
2168 | #ifdef CONFIG_CYZ_INTR | |
2169 | int retval; | |
2170 | ||
2171 | CY_LOCK(info, flags); | |
2172 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK, 0L); | |
2173 | if (retval != 0){ | |
2174 | printk("cyc:start_xmit retval on ttyC%d was %x\n", | |
2175 | info->line, retval); | |
2176 | } | |
2177 | CY_UNLOCK(info, flags); | |
2178 | #else /* CONFIG_CYZ_INTR */ | |
2179 | /* Don't have to do anything at this time */ | |
2180 | #endif /* CONFIG_CYZ_INTR */ | |
2181 | } | |
2182 | } /* start_xmit */ | |
2183 | ||
2184 | /* | |
2185 | * This routine shuts down a serial port; interrupts are disabled, | |
2186 | * and DTR is dropped if the hangup on close termio flag is on. | |
2187 | */ | |
2188 | static void | |
2189 | shutdown(struct cyclades_port * info) | |
2190 | { | |
2191 | unsigned long flags; | |
2192 | void __iomem *base_addr; | |
2193 | int card,chip,channel,index; | |
2194 | ||
2195 | if (!(info->flags & ASYNC_INITIALIZED)){ | |
2196 | return; | |
2197 | } | |
2198 | ||
2199 | card = info->card; | |
2200 | channel = info->line - cy_card[card].first_line; | |
2201 | if (!IS_CYC_Z(cy_card[card])) { | |
2202 | chip = channel>>2; | |
2203 | channel &= 0x03; | |
2204 | index = cy_card[card].bus_index; | |
2205 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
2206 | ||
2207 | #ifdef CY_DEBUG_OPEN | |
2208 | printk("cyc shutdown Y card %d, chip %d, channel %d, base_addr %lx\n", | |
2209 | card, chip, channel, (long)base_addr); | |
2210 | #endif | |
2211 | ||
2212 | CY_LOCK(info, flags); | |
2213 | ||
2214 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
2215 | wake_up_interruptible(&info->delta_msr_wait); | |
2216 | ||
2217 | if (info->xmit_buf){ | |
2218 | unsigned char * temp; | |
2219 | temp = info->xmit_buf; | |
2220 | info->xmit_buf = NULL; | |
2221 | free_page((unsigned long) temp); | |
2222 | } | |
2223 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
2224 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2225 | cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); | |
2226 | cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); | |
2227 | #ifdef CY_DEBUG_DTR | |
2228 | printk("cyc shutdown dropping DTR\n"); | |
2229 | printk(" status: 0x%x, 0x%x\n", | |
2230 | cy_readb(base_addr+(CyMSVR1<<index)), | |
2231 | cy_readb(base_addr+(CyMSVR2<<index))); | |
2232 | #endif | |
2233 | } | |
2234 | cyy_issue_cmd(base_addr,CyCHAN_CTL|CyDIS_RCVR,index); | |
2235 | /* it may be appropriate to clear _XMIT at | |
2236 | some later date (after testing)!!! */ | |
2237 | ||
2238 | if (info->tty){ | |
2239 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2240 | } | |
2241 | info->flags &= ~ASYNC_INITIALIZED; | |
2242 | CY_UNLOCK(info, flags); | |
2243 | } else { | |
2244 | struct FIRM_ID __iomem *firm_id; | |
2245 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2246 | struct BOARD_CTRL __iomem *board_ctrl; | |
2247 | struct CH_CTRL __iomem *ch_ctrl; | |
2248 | int retval; | |
2249 | ||
2250 | base_addr = cy_card[card].base_addr; | |
2251 | #ifdef CY_DEBUG_OPEN | |
2252 | printk("cyc shutdown Z card %d, channel %d, base_addr %lx\n", | |
2253 | card, channel, (long)base_addr); | |
2254 | #endif | |
2255 | ||
2256 | firm_id = base_addr + ID_ADDRESS; | |
2257 | if (!ISZLOADED(cy_card[card])) { | |
2258 | return; | |
2259 | } | |
2260 | ||
2261 | zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
2262 | board_ctrl = &zfw_ctrl->board_ctrl; | |
2263 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
2264 | ||
2265 | CY_LOCK(info, flags); | |
2266 | ||
2267 | if (info->xmit_buf){ | |
2268 | unsigned char * temp; | |
2269 | temp = info->xmit_buf; | |
2270 | info->xmit_buf = NULL; | |
2271 | free_page((unsigned long) temp); | |
2272 | } | |
2273 | ||
2274 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2275 | cy_writel(&ch_ctrl[channel].rs_control, | |
2276 | (uclong)(cy_readl(&ch_ctrl[channel].rs_control) & | |
2277 | ~(C_RS_RTS | C_RS_DTR))); | |
2278 | retval = cyz_issue_cmd(&cy_card[info->card], | |
2279 | channel, C_CM_IOCTLM, 0L); | |
2280 | if (retval != 0){ | |
2281 | printk("cyc:shutdown retval on ttyC%d was %x\n", | |
2282 | info->line, retval); | |
2283 | } | |
2284 | #ifdef CY_DEBUG_DTR | |
2285 | printk("cyc:shutdown dropping Z DTR\n"); | |
2286 | #endif | |
2287 | } | |
2288 | ||
2289 | if (info->tty){ | |
2290 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2291 | } | |
2292 | info->flags &= ~ASYNC_INITIALIZED; | |
2293 | ||
2294 | CY_UNLOCK(info, flags); | |
2295 | } | |
2296 | ||
2297 | #ifdef CY_DEBUG_OPEN | |
2298 | printk(" cyc shutdown done\n"); | |
2299 | #endif | |
2300 | return; | |
2301 | } /* shutdown */ | |
2302 | ||
2303 | ||
2304 | /* | |
2305 | * ------------------------------------------------------------ | |
2306 | * cy_open() and friends | |
2307 | * ------------------------------------------------------------ | |
2308 | */ | |
2309 | ||
2310 | static int | |
2311 | block_til_ready(struct tty_struct *tty, struct file * filp, | |
2312 | struct cyclades_port *info) | |
2313 | { | |
2314 | DECLARE_WAITQUEUE(wait, current); | |
2315 | struct cyclades_card *cinfo; | |
2316 | unsigned long flags; | |
2317 | int chip, channel,index; | |
2318 | int retval; | |
2319 | void __iomem *base_addr; | |
2320 | ||
2321 | cinfo = &cy_card[info->card]; | |
2322 | channel = info->line - cinfo->first_line; | |
2323 | ||
2324 | /* | |
2325 | * If the device is in the middle of being closed, then block | |
2326 | * until it's done, and then try again. | |
2327 | */ | |
2328 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2329 | if (info->flags & ASYNC_CLOSING) { | |
2330 | interruptible_sleep_on(&info->close_wait); | |
2331 | } | |
2332 | return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); | |
2333 | } | |
2334 | ||
2335 | /* | |
2336 | * If non-blocking mode is set, then make the check up front | |
2337 | * and then exit. | |
2338 | */ | |
2339 | if ((filp->f_flags & O_NONBLOCK) || | |
2340 | (tty->flags & (1 << TTY_IO_ERROR))) { | |
2341 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2342 | return 0; | |
2343 | } | |
2344 | ||
2345 | /* | |
2346 | * Block waiting for the carrier detect and the line to become | |
2347 | * free (i.e., not in use by the callout). While we are in | |
2348 | * this loop, info->count is dropped by one, so that | |
2349 | * cy_close() knows when to free things. We restore it upon | |
2350 | * exit, either normal or abnormal. | |
2351 | */ | |
2352 | retval = 0; | |
2353 | add_wait_queue(&info->open_wait, &wait); | |
2354 | #ifdef CY_DEBUG_OPEN | |
2355 | printk("cyc block_til_ready before block: ttyC%d, count = %d\n", | |
2356 | info->line, info->count);/**/ | |
2357 | #endif | |
2358 | CY_LOCK(info, flags); | |
2359 | if (!tty_hung_up_p(filp)) | |
2360 | info->count--; | |
2361 | CY_UNLOCK(info, flags); | |
2362 | #ifdef CY_DEBUG_COUNT | |
2363 | printk("cyc block_til_ready: (%d): decrementing count to %d\n", | |
2364 | current->pid, info->count); | |
2365 | #endif | |
2366 | info->blocked_open++; | |
2367 | ||
2368 | if (!IS_CYC_Z(*cinfo)) { | |
2369 | chip = channel>>2; | |
2370 | channel &= 0x03; | |
2371 | index = cinfo->bus_index; | |
2372 | base_addr = cinfo->base_addr + (cy_chip_offset[chip]<<index); | |
2373 | ||
2374 | while (1) { | |
2375 | CY_LOCK(info, flags); | |
2376 | if ((tty->termios->c_cflag & CBAUD)){ | |
2377 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
2378 | cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); | |
2379 | cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); | |
2380 | #ifdef CY_DEBUG_DTR | |
2381 | printk("cyc:block_til_ready raising DTR\n"); | |
2382 | printk(" status: 0x%x, 0x%x\n", | |
2383 | cy_readb(base_addr+(CyMSVR1<<index)), | |
2384 | cy_readb(base_addr+(CyMSVR2<<index))); | |
2385 | #endif | |
2386 | } | |
2387 | CY_UNLOCK(info, flags); | |
2388 | ||
2389 | set_current_state(TASK_INTERRUPTIBLE); | |
2390 | if (tty_hung_up_p(filp) | |
2391 | || !(info->flags & ASYNC_INITIALIZED) ){ | |
2392 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2393 | -EAGAIN : -ERESTARTSYS); | |
2394 | break; | |
2395 | } | |
2396 | ||
2397 | CY_LOCK(info, flags); | |
2398 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
2399 | if (!(info->flags & ASYNC_CLOSING) | |
2400 | && (C_CLOCAL(tty) | |
2401 | || (cy_readb(base_addr+(CyMSVR1<<index)) & CyDCD))) { | |
2402 | CY_UNLOCK(info, flags); | |
2403 | break; | |
2404 | } | |
2405 | CY_UNLOCK(info, flags); | |
2406 | ||
2407 | if (signal_pending(current)) { | |
2408 | retval = -ERESTARTSYS; | |
2409 | break; | |
2410 | } | |
2411 | #ifdef CY_DEBUG_OPEN | |
2412 | printk("cyc block_til_ready blocking: ttyC%d, count = %d\n", | |
2413 | info->line, info->count);/**/ | |
2414 | #endif | |
2415 | schedule(); | |
2416 | } | |
2417 | } else { | |
2418 | struct FIRM_ID __iomem *firm_id; | |
2419 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2420 | struct BOARD_CTRL __iomem *board_ctrl; | |
2421 | struct CH_CTRL __iomem *ch_ctrl; | |
2422 | int retval; | |
2423 | ||
2424 | base_addr = cinfo->base_addr; | |
2425 | firm_id = base_addr + ID_ADDRESS; | |
2426 | if (!ISZLOADED(*cinfo)){ | |
2427 | current->state = TASK_RUNNING; | |
2428 | remove_wait_queue(&info->open_wait, &wait); | |
2429 | return -EINVAL; | |
2430 | } | |
2431 | ||
2432 | zfw_ctrl = base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
2433 | board_ctrl = &zfw_ctrl->board_ctrl; | |
2434 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
2435 | ||
2436 | while (1) { | |
2437 | if ((tty->termios->c_cflag & CBAUD)){ | |
2438 | cy_writel(&ch_ctrl[channel].rs_control, | |
2439 | cy_readl(&ch_ctrl[channel].rs_control) | | |
2440 | (C_RS_RTS | C_RS_DTR)); | |
2441 | retval = cyz_issue_cmd(&cy_card[info->card], | |
2442 | channel, C_CM_IOCTLM, 0L); | |
2443 | if (retval != 0){ | |
2444 | printk("cyc:block_til_ready retval on ttyC%d was %x\n", | |
2445 | info->line, retval); | |
2446 | } | |
2447 | #ifdef CY_DEBUG_DTR | |
2448 | printk("cyc:block_til_ready raising Z DTR\n"); | |
2449 | #endif | |
2450 | } | |
2451 | ||
2452 | set_current_state(TASK_INTERRUPTIBLE); | |
2453 | if (tty_hung_up_p(filp) | |
2454 | || !(info->flags & ASYNC_INITIALIZED) ){ | |
2455 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2456 | -EAGAIN : -ERESTARTSYS); | |
2457 | break; | |
2458 | } | |
2459 | if (!(info->flags & ASYNC_CLOSING) | |
2460 | && (C_CLOCAL(tty) | |
2461 | || (cy_readl(&ch_ctrl[channel].rs_status) & C_RS_DCD))) { | |
2462 | break; | |
2463 | } | |
2464 | if (signal_pending(current)) { | |
2465 | retval = -ERESTARTSYS; | |
2466 | break; | |
2467 | } | |
2468 | #ifdef CY_DEBUG_OPEN | |
2469 | printk("cyc block_til_ready blocking: ttyC%d, count = %d\n", | |
2470 | info->line, info->count);/**/ | |
2471 | #endif | |
2472 | schedule(); | |
2473 | } | |
2474 | } | |
2475 | current->state = TASK_RUNNING; | |
2476 | remove_wait_queue(&info->open_wait, &wait); | |
2477 | if (!tty_hung_up_p(filp)){ | |
2478 | info->count++; | |
2479 | #ifdef CY_DEBUG_COUNT | |
2480 | printk("cyc:block_til_ready (%d): incrementing count to %d\n", | |
2481 | current->pid, info->count); | |
2482 | #endif | |
2483 | } | |
2484 | info->blocked_open--; | |
2485 | #ifdef CY_DEBUG_OPEN | |
2486 | printk("cyc:block_til_ready after blocking: ttyC%d, count = %d\n", | |
2487 | info->line, info->count);/**/ | |
2488 | #endif | |
2489 | if (retval) | |
2490 | return retval; | |
2491 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2492 | return 0; | |
2493 | } /* block_til_ready */ | |
2494 | ||
2495 | ||
2496 | /* | |
2497 | * This routine is called whenever a serial port is opened. It | |
2498 | * performs the serial-specific initialization for the tty structure. | |
2499 | */ | |
2500 | static int | |
2501 | cy_open(struct tty_struct *tty, struct file * filp) | |
2502 | { | |
2503 | struct cyclades_port *info; | |
2504 | int retval, line; | |
2505 | unsigned long page; | |
2506 | ||
2507 | line = tty->index; | |
2508 | if ((line < 0) || (NR_PORTS <= line)){ | |
2509 | return -ENODEV; | |
2510 | } | |
2511 | info = &cy_port[line]; | |
2512 | if (info->line < 0){ | |
2513 | return -ENODEV; | |
2514 | } | |
2515 | ||
2516 | /* If the card's firmware hasn't been loaded, | |
2517 | treat it as absent from the system. This | |
2518 | will make the user pay attention. | |
2519 | */ | |
2520 | if (IS_CYC_Z(cy_card[info->card])) { | |
2521 | struct cyclades_card *cinfo = &cy_card[info->card]; | |
2522 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; | |
2523 | ||
2524 | if (!ISZLOADED(*cinfo)) { | |
2525 | if (((ZE_V1 ==cy_readl(&((struct RUNTIME_9060 __iomem *) | |
2526 | (cinfo->ctl_addr))->mail_box_0)) && | |
2527 | Z_FPGA_CHECK (*cinfo)) && | |
2528 | (ZFIRM_HLT == cy_readl (&firm_id->signature))) | |
2529 | { | |
2530 | printk ("cyc:Cyclades-Z Error: you need an external power supply for this number of ports.\n\rFirmware halted.\r\n"); | |
2531 | } else { | |
2532 | printk("cyc:Cyclades-Z firmware not yet loaded\n"); | |
2533 | } | |
2534 | return -ENODEV; | |
2535 | } | |
2536 | #ifdef CONFIG_CYZ_INTR | |
2537 | else { | |
2538 | /* In case this Z board is operating in interrupt mode, its | |
2539 | interrupts should be enabled as soon as the first open happens | |
2540 | to one of its ports. */ | |
2541 | if (!cinfo->intr_enabled) { | |
2542 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2543 | struct BOARD_CTRL __iomem *board_ctrl; | |
2544 | ||
2545 | zfw_ctrl = cinfo->base_addr + (cy_readl (&firm_id->zfwctrl_addr) & 0xfffff); | |
2546 | ||
2547 | board_ctrl = &zfw_ctrl->board_ctrl; | |
2548 | ||
2549 | /* Enable interrupts on the PLX chip */ | |
2550 | cy_writew(cinfo->ctl_addr+0x68, | |
2551 | cy_readw(cinfo->ctl_addr+0x68)|0x0900); | |
2552 | /* Enable interrupts on the FW */ | |
2553 | retval = cyz_issue_cmd(cinfo, | |
2554 | 0, C_CM_IRQ_ENBL, 0L); | |
2555 | if (retval != 0){ | |
2556 | printk("cyc:IRQ enable retval was %x\n", retval); | |
2557 | } | |
2558 | cinfo->nports = (int) cy_readl (&board_ctrl->n_channel); | |
2559 | cinfo->intr_enabled = 1; | |
2560 | } | |
2561 | } | |
2562 | #endif /* CONFIG_CYZ_INTR */ | |
2563 | /* Make sure this Z port really exists in hardware */ | |
2564 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
2565 | return -ENODEV; | |
2566 | } | |
2567 | #ifdef CY_DEBUG_OTHER | |
2568 | printk("cyc:cy_open ttyC%d\n", info->line); /* */ | |
2569 | #endif | |
2570 | tty->driver_data = info; | |
2571 | info->tty = tty; | |
2572 | if (serial_paranoia_check(info, tty->name, "cy_open")){ | |
2573 | return -ENODEV; | |
2574 | } | |
2575 | #ifdef CY_DEBUG_OPEN | |
2576 | printk("cyc:cy_open ttyC%d, count = %d\n", | |
2577 | info->line, info->count);/**/ | |
2578 | #endif | |
2579 | info->count++; | |
2580 | #ifdef CY_DEBUG_COUNT | |
2581 | printk("cyc:cy_open (%d): incrementing count to %d\n", | |
2582 | current->pid, info->count); | |
2583 | #endif | |
2584 | if (!tmp_buf) { | |
2585 | page = get_zeroed_page(GFP_KERNEL); | |
2586 | if (!page) | |
2587 | return -ENOMEM; | |
2588 | if (tmp_buf) | |
2589 | free_page(page); | |
2590 | else | |
2591 | tmp_buf = (unsigned char *) page; | |
2592 | } | |
2593 | ||
2594 | /* | |
2595 | * If the port is the middle of closing, bail out now | |
2596 | */ | |
2597 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2598 | if (info->flags & ASYNC_CLOSING) | |
2599 | interruptible_sleep_on(&info->close_wait); | |
2600 | return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); | |
2601 | } | |
2602 | ||
2603 | /* | |
2604 | * Start up serial port | |
2605 | */ | |
2606 | retval = startup(info); | |
2607 | if (retval){ | |
2608 | return retval; | |
2609 | } | |
2610 | ||
2611 | retval = block_til_ready(tty, filp, info); | |
2612 | if (retval) { | |
2613 | #ifdef CY_DEBUG_OPEN | |
2614 | printk("cyc:cy_open returning after block_til_ready with %d\n", | |
2615 | retval); | |
2616 | #endif | |
2617 | return retval; | |
2618 | } | |
2619 | ||
2620 | info->throttle = 0; | |
2621 | ||
2622 | #ifdef CY_DEBUG_OPEN | |
2623 | printk(" cyc:cy_open done\n");/**/ | |
2624 | #endif | |
2625 | ||
2626 | return 0; | |
2627 | } /* cy_open */ | |
2628 | ||
2629 | ||
2630 | /* | |
2631 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
2632 | */ | |
2633 | static void | |
2634 | cy_wait_until_sent(struct tty_struct *tty, int timeout) | |
2635 | { | |
2636 | struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; | |
2637 | void __iomem *base_addr; | |
2638 | int card,chip,channel,index; | |
2639 | unsigned long orig_jiffies; | |
2640 | int char_time; | |
2641 | ||
2642 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
2643 | return; | |
2644 | ||
2645 | if (info->xmit_fifo_size == 0) | |
2646 | return; /* Just in case.... */ | |
2647 | ||
2648 | ||
2649 | orig_jiffies = jiffies; | |
2650 | /* | |
2651 | * Set the check interval to be 1/5 of the estimated time to | |
2652 | * send a single character, and make it at least 1. The check | |
2653 | * interval should also be less than the timeout. | |
2654 | * | |
2655 | * Note: we have to use pretty tight timings here to satisfy | |
2656 | * the NIST-PCTS. | |
2657 | */ | |
2658 | char_time = (info->timeout - HZ/50) / info->xmit_fifo_size; | |
2659 | char_time = char_time / 5; | |
2660 | if (char_time <= 0) | |
2661 | char_time = 1; | |
2662 | if (timeout < 0) | |
2663 | timeout = 0; | |
2664 | if (timeout) | |
2665 | char_time = min(char_time, timeout); | |
2666 | /* | |
2667 | * If the transmitter hasn't cleared in twice the approximate | |
2668 | * amount of time to send the entire FIFO, it probably won't | |
2669 | * ever clear. This assumes the UART isn't doing flow | |
2670 | * control, which is currently the case. Hence, if it ever | |
2671 | * takes longer than info->timeout, this is probably due to a | |
2672 | * UART bug of some kind. So, we clamp the timeout parameter at | |
2673 | * 2*info->timeout. | |
2674 | */ | |
2675 | if (!timeout || timeout > 2*info->timeout) | |
2676 | timeout = 2*info->timeout; | |
2677 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT | |
2678 | printk("In cy_wait_until_sent(%d) check=%lu...", timeout, char_time); | |
2679 | printk("jiff=%lu...", jiffies); | |
2680 | #endif | |
2681 | card = info->card; | |
2682 | channel = (info->line) - (cy_card[card].first_line); | |
2683 | if (!IS_CYC_Z(cy_card[card])) { | |
2684 | chip = channel>>2; | |
2685 | channel &= 0x03; | |
2686 | index = cy_card[card].bus_index; | |
2687 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
2688 | while (cy_readb(base_addr+(CySRER<<index)) & CyTxRdy) { | |
2689 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT | |
2690 | printk("Not clean (jiff=%lu)...", jiffies); | |
2691 | #endif | |
2692 | if (msleep_interruptible(jiffies_to_msecs(char_time))) | |
2693 | break; | |
2694 | if (timeout && time_after(jiffies, orig_jiffies + timeout)) | |
2695 | break; | |
2696 | } | |
2697 | } else { | |
2698 | // Nothing to do! | |
2699 | } | |
2700 | /* Run one more char cycle */ | |
2701 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
2702 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT | |
2703 | printk("Clean (jiff=%lu)...done\n", jiffies); | |
2704 | #endif | |
2705 | } | |
2706 | ||
2707 | /* | |
2708 | * This routine is called when a particular tty device is closed. | |
2709 | */ | |
2710 | static void | |
2711 | cy_close(struct tty_struct *tty, struct file *filp) | |
2712 | { | |
2713 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
2714 | unsigned long flags; | |
2715 | ||
2716 | #ifdef CY_DEBUG_OTHER | |
2717 | printk("cyc:cy_close ttyC%d\n", info->line); | |
2718 | #endif | |
2719 | ||
2720 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")){ | |
2721 | return; | |
2722 | } | |
2723 | ||
2724 | CY_LOCK(info, flags); | |
2725 | /* If the TTY is being hung up, nothing to do */ | |
2726 | if (tty_hung_up_p(filp)) { | |
2727 | CY_UNLOCK(info, flags); | |
2728 | return; | |
2729 | } | |
2730 | ||
2731 | #ifdef CY_DEBUG_OPEN | |
2732 | printk("cyc:cy_close ttyC%d, count = %d\n", info->line, info->count); | |
2733 | #endif | |
2734 | if ((tty->count == 1) && (info->count != 1)) { | |
2735 | /* | |
2736 | * Uh, oh. tty->count is 1, which means that the tty | |
2737 | * structure will be freed. Info->count should always | |
2738 | * be one in these conditions. If it's greater than | |
2739 | * one, we've got real problems, since it means the | |
2740 | * serial port won't be shutdown. | |
2741 | */ | |
2742 | printk("cyc:cy_close: bad serial port count; tty->count is 1, " | |
2743 | "info->count is %d\n", info->count); | |
2744 | info->count = 1; | |
2745 | } | |
2746 | #ifdef CY_DEBUG_COUNT | |
2747 | printk("cyc:cy_close at (%d): decrementing count to %d\n", | |
2748 | current->pid, info->count - 1); | |
2749 | #endif | |
2750 | if (--info->count < 0) { | |
2751 | #ifdef CY_DEBUG_COUNT | |
2752 | printk("cyc:cyc_close setting count to 0\n"); | |
2753 | #endif | |
2754 | info->count = 0; | |
2755 | } | |
2756 | if (info->count) { | |
2757 | CY_UNLOCK(info, flags); | |
2758 | return; | |
2759 | } | |
2760 | info->flags |= ASYNC_CLOSING; | |
2761 | ||
2762 | /* | |
2763 | * Now we wait for the transmit buffer to clear; and we notify | |
2764 | * the line discipline to only process XON/XOFF characters. | |
2765 | */ | |
2766 | tty->closing = 1; | |
2767 | CY_UNLOCK(info, flags); | |
2768 | if (info->closing_wait != CY_CLOSING_WAIT_NONE) { | |
2769 | tty_wait_until_sent(tty, info->closing_wait); | |
2770 | } | |
2771 | CY_LOCK(info, flags); | |
2772 | ||
2773 | if (!IS_CYC_Z(cy_card[info->card])) { | |
2774 | int channel = info->line - cy_card[info->card].first_line; | |
2775 | int index = cy_card[info->card].bus_index; | |
2776 | void __iomem *base_addr = cy_card[info->card].base_addr + (cy_chip_offset[channel>>2] << index); | |
2777 | /* Stop accepting input */ | |
2778 | channel &= 0x03; | |
2779 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
2780 | cy_writeb(base_addr+(CySRER<<index), | |
2781 | cy_readb(base_addr+(CySRER<<index)) & ~CyRxData); | |
2782 | if (info->flags & ASYNC_INITIALIZED) { | |
2783 | /* Waiting for on-board buffers to be empty before closing | |
2784 | the port */ | |
2785 | CY_UNLOCK(info, flags); | |
2786 | cy_wait_until_sent(tty, info->timeout); | |
2787 | CY_LOCK(info, flags); | |
2788 | } | |
2789 | } else { | |
2790 | #ifdef Z_WAKE | |
2791 | /* Waiting for on-board buffers to be empty before closing the port */ | |
2792 | void __iomem *base_addr = cy_card[info->card].base_addr; | |
2793 | struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; | |
2794 | struct ZFW_CTRL __iomem *zfw_ctrl = base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
2795 | struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; | |
2796 | int channel = info->line - cy_card[info->card].first_line; | |
2797 | int retval; | |
2798 | ||
2799 | if (cy_readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { | |
2800 | retval = cyz_issue_cmd(&cy_card[info->card], channel, | |
2801 | C_CM_IOCTLW, 0L); | |
2802 | if (retval != 0){ | |
2803 | printk("cyc:cy_close retval on ttyC%d was %x\n", | |
2804 | info->line, retval); | |
2805 | } | |
2806 | CY_UNLOCK(info, flags); | |
2807 | interruptible_sleep_on(&info->shutdown_wait); | |
2808 | CY_LOCK(info, flags); | |
2809 | } | |
2810 | #endif | |
2811 | } | |
2812 | ||
2813 | CY_UNLOCK(info, flags); | |
2814 | shutdown(info); | |
2815 | if (tty->driver->flush_buffer) | |
2816 | tty->driver->flush_buffer(tty); | |
2817 | tty_ldisc_flush(tty); | |
2818 | CY_LOCK(info, flags); | |
2819 | ||
2820 | tty->closing = 0; | |
2821 | info->event = 0; | |
2822 | info->tty = NULL; | |
2823 | if (info->blocked_open) { | |
2824 | CY_UNLOCK(info, flags); | |
2825 | if (info->close_delay) { | |
2826 | msleep_interruptible(jiffies_to_msecs(info->close_delay)); | |
2827 | } | |
2828 | wake_up_interruptible(&info->open_wait); | |
2829 | CY_LOCK(info, flags); | |
2830 | } | |
2831 | info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
2832 | wake_up_interruptible(&info->close_wait); | |
2833 | ||
2834 | #ifdef CY_DEBUG_OTHER | |
2835 | printk(" cyc:cy_close done\n"); | |
2836 | #endif | |
2837 | ||
2838 | CY_UNLOCK(info, flags); | |
2839 | return; | |
2840 | } /* cy_close */ | |
2841 | ||
2842 | ||
2843 | /* This routine gets called when tty_write has put something into | |
2844 | * the write_queue. The characters may come from user space or | |
2845 | * kernel space. | |
2846 | * | |
2847 | * This routine will return the number of characters actually | |
2848 | * accepted for writing. | |
2849 | * | |
2850 | * If the port is not already transmitting stuff, start it off by | |
2851 | * enabling interrupts. The interrupt service routine will then | |
2852 | * ensure that the characters are sent. | |
2853 | * If the port is already active, there is no need to kick it. | |
2854 | * | |
2855 | */ | |
2856 | static int | |
2857 | cy_write(struct tty_struct * tty, const unsigned char *buf, int count) | |
2858 | { | |
2859 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
2860 | unsigned long flags; | |
2861 | int c, ret = 0; | |
2862 | ||
2863 | #ifdef CY_DEBUG_IO | |
2864 | printk("cyc:cy_write ttyC%d\n", info->line); /* */ | |
2865 | #endif | |
2866 | ||
2867 | if (serial_paranoia_check(info, tty->name, "cy_write")){ | |
2868 | return 0; | |
2869 | } | |
2870 | ||
2871 | if (!tty || !info->xmit_buf || !tmp_buf){ | |
2872 | return 0; | |
2873 | } | |
2874 | ||
2875 | CY_LOCK(info, flags); | |
2876 | while (1) { | |
2877 | c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), | |
2878 | (int)(SERIAL_XMIT_SIZE - info->xmit_head))); | |
2879 | ||
2880 | if (c <= 0) | |
2881 | break; | |
2882 | ||
2883 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | |
2884 | info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1); | |
2885 | info->xmit_cnt += c; | |
2886 | buf += c; | |
2887 | count -= c; | |
2888 | ret += c; | |
2889 | } | |
2890 | CY_UNLOCK(info, flags); | |
2891 | ||
2892 | info->idle_stats.xmit_bytes += ret; | |
2893 | info->idle_stats.xmit_idle = jiffies; | |
2894 | ||
2895 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { | |
2896 | start_xmit(info); | |
2897 | } | |
2898 | return ret; | |
2899 | } /* cy_write */ | |
2900 | ||
2901 | ||
2902 | /* | |
2903 | * This routine is called by the kernel to write a single | |
2904 | * character to the tty device. If the kernel uses this routine, | |
2905 | * it must call the flush_chars() routine (if defined) when it is | |
2906 | * done stuffing characters into the driver. If there is no room | |
2907 | * in the queue, the character is ignored. | |
2908 | */ | |
2909 | static void | |
2910 | cy_put_char(struct tty_struct *tty, unsigned char ch) | |
2911 | { | |
2912 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
2913 | unsigned long flags; | |
2914 | ||
2915 | #ifdef CY_DEBUG_IO | |
2916 | printk("cyc:cy_put_char ttyC%d\n", info->line); | |
2917 | #endif | |
2918 | ||
2919 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) | |
2920 | return; | |
2921 | ||
2922 | if (!tty || !info->xmit_buf) | |
2923 | return; | |
2924 | ||
2925 | CY_LOCK(info, flags); | |
2926 | if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { | |
2927 | CY_UNLOCK(info, flags); | |
2928 | return; | |
2929 | } | |
2930 | ||
2931 | info->xmit_buf[info->xmit_head++] = ch; | |
2932 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
2933 | info->xmit_cnt++; | |
2934 | info->idle_stats.xmit_bytes++; | |
2935 | info->idle_stats.xmit_idle = jiffies; | |
2936 | CY_UNLOCK(info, flags); | |
2937 | } /* cy_put_char */ | |
2938 | ||
2939 | ||
2940 | /* | |
2941 | * This routine is called by the kernel after it has written a | |
2942 | * series of characters to the tty device using put_char(). | |
2943 | */ | |
2944 | static void | |
2945 | cy_flush_chars(struct tty_struct *tty) | |
2946 | { | |
2947 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
2948 | ||
2949 | #ifdef CY_DEBUG_IO | |
2950 | printk("cyc:cy_flush_chars ttyC%d\n", info->line); /* */ | |
2951 | #endif | |
2952 | ||
2953 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) | |
2954 | return; | |
2955 | ||
2956 | if (info->xmit_cnt <= 0 || tty->stopped | |
2957 | || tty->hw_stopped || !info->xmit_buf) | |
2958 | return; | |
2959 | ||
2960 | start_xmit(info); | |
2961 | } /* cy_flush_chars */ | |
2962 | ||
2963 | ||
2964 | /* | |
2965 | * This routine returns the numbers of characters the tty driver | |
2966 | * will accept for queuing to be written. This number is subject | |
2967 | * to change as output buffers get emptied, or if the output flow | |
2968 | * control is activated. | |
2969 | */ | |
2970 | static int | |
2971 | cy_write_room(struct tty_struct *tty) | |
2972 | { | |
2973 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
2974 | int ret; | |
2975 | ||
2976 | #ifdef CY_DEBUG_IO | |
2977 | printk("cyc:cy_write_room ttyC%d\n", info->line); /* */ | |
2978 | #endif | |
2979 | ||
2980 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) | |
2981 | return 0; | |
2982 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
2983 | if (ret < 0) | |
2984 | ret = 0; | |
2985 | return ret; | |
2986 | } /* cy_write_room */ | |
2987 | ||
2988 | ||
2989 | static int | |
2990 | cy_chars_in_buffer(struct tty_struct *tty) | |
2991 | { | |
2992 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
2993 | int card, channel; | |
2994 | ||
2995 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) | |
2996 | return 0; | |
2997 | ||
2998 | card = info->card; | |
2999 | channel = (info->line) - (cy_card[card].first_line); | |
3000 | ||
3001 | #ifdef Z_EXT_CHARS_IN_BUFFER | |
3002 | if (!IS_CYC_Z(cy_card[card])) { | |
3003 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
3004 | #ifdef CY_DEBUG_IO | |
3005 | printk("cyc:cy_chars_in_buffer ttyC%d %d\n", | |
3006 | info->line, info->xmit_cnt); /* */ | |
3007 | #endif | |
3008 | return info->xmit_cnt; | |
3009 | #ifdef Z_EXT_CHARS_IN_BUFFER | |
3010 | } else { | |
3011 | static volatile struct FIRM_ID *firm_id; | |
3012 | static volatile struct ZFW_CTRL *zfw_ctrl; | |
3013 | static volatile struct CH_CTRL *ch_ctrl; | |
3014 | static volatile struct BUF_CTRL *buf_ctrl; | |
3015 | int char_count; | |
3016 | volatile uclong tx_put, tx_get, tx_bufsize; | |
3017 | ||
3018 | firm_id = cy_card[card].base_addr + ID_ADDRESS; | |
3019 | zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3020 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); | |
3021 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
3022 | ||
3023 | tx_get = cy_readl(&buf_ctrl->tx_get); | |
3024 | tx_put = cy_readl(&buf_ctrl->tx_put); | |
3025 | tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize); | |
3026 | if (tx_put >= tx_get) | |
3027 | char_count = tx_put - tx_get; | |
3028 | else | |
3029 | char_count = tx_put - tx_get + tx_bufsize; | |
3030 | #ifdef CY_DEBUG_IO | |
3031 | printk("cyc:cy_chars_in_buffer ttyC%d %d\n", | |
3032 | info->line, info->xmit_cnt + char_count); /* */ | |
3033 | #endif | |
3034 | return (info->xmit_cnt + char_count); | |
3035 | } | |
3036 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
3037 | } /* cy_chars_in_buffer */ | |
3038 | ||
3039 | ||
3040 | /* | |
3041 | * ------------------------------------------------------------ | |
3042 | * cy_ioctl() and friends | |
3043 | * ------------------------------------------------------------ | |
3044 | */ | |
3045 | ||
3046 | static void | |
3047 | cyy_baud_calc(struct cyclades_port *info, uclong baud) | |
3048 | { | |
3049 | int co, co_val, bpr; | |
3050 | uclong cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : 25000000); | |
3051 | ||
3052 | if (baud == 0) { | |
3053 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
3054 | return; | |
3055 | } | |
3056 | ||
3057 | /* determine which prescaler to use */ | |
3058 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
3059 | if (cy_clock / co_val / baud > 63) | |
3060 | break; | |
3061 | } | |
3062 | ||
3063 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; | |
3064 | if (bpr > 255) | |
3065 | bpr = 255; | |
3066 | ||
3067 | info->tbpr = info->rbpr = bpr; | |
3068 | info->tco = info->rco = co; | |
3069 | } | |
3070 | ||
3071 | /* | |
3072 | * This routine finds or computes the various line characteristics. | |
3073 | * It used to be called config_setup | |
3074 | */ | |
3075 | static void | |
3076 | set_line_char(struct cyclades_port * info) | |
3077 | { | |
3078 | unsigned long flags; | |
3079 | void __iomem *base_addr; | |
3080 | int card,chip,channel,index; | |
3081 | unsigned cflag, iflag; | |
3082 | unsigned short chip_number; | |
3083 | int baud, baud_rate = 0; | |
3084 | int i; | |
3085 | ||
3086 | ||
3087 | if (!info->tty || !info->tty->termios){ | |
3088 | return; | |
3089 | } | |
3090 | if (info->line == -1){ | |
3091 | return; | |
3092 | } | |
3093 | cflag = info->tty->termios->c_cflag; | |
3094 | iflag = info->tty->termios->c_iflag; | |
3095 | ||
3096 | /* | |
3097 | * Set up the tty->alt_speed kludge | |
3098 | */ | |
3099 | if (info->tty) { | |
3100 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
3101 | info->tty->alt_speed = 57600; | |
3102 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
3103 | info->tty->alt_speed = 115200; | |
3104 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
3105 | info->tty->alt_speed = 230400; | |
3106 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
3107 | info->tty->alt_speed = 460800; | |
3108 | } | |
3109 | ||
3110 | card = info->card; | |
3111 | channel = (info->line) - (cy_card[card].first_line); | |
3112 | chip_number = channel / 4; | |
3113 | ||
3114 | if (!IS_CYC_Z(cy_card[card])) { | |
3115 | ||
3116 | index = cy_card[card].bus_index; | |
3117 | ||
3118 | /* baud rate */ | |
3119 | baud = tty_get_baud_rate(info->tty); | |
3120 | if ((baud == 38400) && | |
3121 | ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { | |
3122 | if (info->custom_divisor) | |
3123 | baud_rate = info->baud / info->custom_divisor; | |
3124 | else | |
3125 | baud_rate = info->baud; | |
3126 | } else if (baud > CD1400_MAX_SPEED) { | |
3127 | baud = CD1400_MAX_SPEED; | |
3128 | } | |
3129 | /* find the baud index */ | |
3130 | for (i = 0; i < 20; i++) { | |
3131 | if (baud == baud_table[i]) { | |
3132 | break; | |
3133 | } | |
3134 | } | |
3135 | if (i == 20) { | |
3136 | i = 19; /* CD1400_MAX_SPEED */ | |
3137 | } | |
3138 | ||
3139 | if ((baud == 38400) && | |
3140 | ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { | |
3141 | cyy_baud_calc(info, baud_rate); | |
3142 | } else { | |
3143 | if(info->chip_rev >= CD1400_REV_J) { | |
3144 | /* It is a CD1400 rev. J or later */ | |
3145 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
3146 | info->tco = baud_co_60[i]; /* Tx CO */ | |
3147 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
3148 | info->rco = baud_co_60[i]; /* Rx CO */ | |
3149 | } else { | |
3150 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
3151 | info->tco = baud_co_25[i]; /* Tx CO */ | |
3152 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
3153 | info->rco = baud_co_25[i]; /* Rx CO */ | |
3154 | } | |
3155 | } | |
3156 | if (baud_table[i] == 134) { | |
3157 | /* get it right for 134.5 baud */ | |
3158 | info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2; | |
3159 | } else if ((baud == 38400) && | |
3160 | ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { | |
3161 | info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2; | |
3162 | } else if (baud_table[i]) { | |
3163 | info->timeout = (info->xmit_fifo_size*HZ*15/baud_table[i]) + 2; | |
3164 | /* this needs to be propagated into the card info */ | |
3165 | } else { | |
3166 | info->timeout = 0; | |
3167 | } | |
3168 | /* By tradition (is it a standard?) a baud rate of zero | |
3169 | implies the line should be/has been closed. A bit | |
3170 | later in this routine such a test is performed. */ | |
3171 | ||
3172 | /* byte size and parity */ | |
3173 | info->cor5 = 0; | |
3174 | info->cor4 = 0; | |
3175 | info->cor3 = (info->default_threshold | |
3176 | ? info->default_threshold | |
3177 | : baud_cor3[i]); /* receive threshold */ | |
3178 | info->cor2 = CyETC; | |
3179 | switch(cflag & CSIZE){ | |
3180 | case CS5: | |
3181 | info->cor1 = Cy_5_BITS; | |
3182 | break; | |
3183 | case CS6: | |
3184 | info->cor1 = Cy_6_BITS; | |
3185 | break; | |
3186 | case CS7: | |
3187 | info->cor1 = Cy_7_BITS; | |
3188 | break; | |
3189 | case CS8: | |
3190 | info->cor1 = Cy_8_BITS; | |
3191 | break; | |
3192 | } | |
3193 | if(cflag & CSTOPB){ | |
3194 | info->cor1 |= Cy_2_STOP; | |
3195 | } | |
3196 | if (cflag & PARENB){ | |
3197 | if (cflag & PARODD){ | |
3198 | info->cor1 |= CyPARITY_O; | |
3199 | }else{ | |
3200 | info->cor1 |= CyPARITY_E; | |
3201 | } | |
3202 | }else{ | |
3203 | info->cor1 |= CyPARITY_NONE; | |
3204 | } | |
3205 | ||
3206 | /* CTS flow control flag */ | |
3207 | if (cflag & CRTSCTS){ | |
3208 | info->flags |= ASYNC_CTS_FLOW; | |
3209 | info->cor2 |= CyCtsAE; | |
3210 | }else{ | |
3211 | info->flags &= ~ASYNC_CTS_FLOW; | |
3212 | info->cor2 &= ~CyCtsAE; | |
3213 | } | |
3214 | if (cflag & CLOCAL) | |
3215 | info->flags &= ~ASYNC_CHECK_CD; | |
3216 | else | |
3217 | info->flags |= ASYNC_CHECK_CD; | |
3218 | ||
3219 | /*********************************************** | |
3220 | The hardware option, CyRtsAO, presents RTS when | |
3221 | the chip has characters to send. Since most modems | |
3222 | use RTS as reverse (inbound) flow control, this | |
3223 | option is not used. If inbound flow control is | |
3224 | necessary, DTR can be programmed to provide the | |
3225 | appropriate signals for use with a non-standard | |
3226 | cable. Contact Marcio Saito for details. | |
3227 | ***********************************************/ | |
3228 | ||
3229 | chip = channel>>2; | |
3230 | channel &= 0x03; | |
3231 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3232 | ||
3233 | CY_LOCK(info, flags); | |
3234 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
3235 | ||
3236 | /* tx and rx baud rate */ | |
3237 | ||
3238 | cy_writeb(base_addr+(CyTCOR<<index), info->tco); | |
3239 | cy_writeb(base_addr+(CyTBPR<<index), info->tbpr); | |
3240 | cy_writeb(base_addr+(CyRCOR<<index), info->rco); | |
3241 | cy_writeb(base_addr+(CyRBPR<<index), info->rbpr); | |
3242 | ||
3243 | /* set line characteristics according configuration */ | |
3244 | ||
3245 | cy_writeb(base_addr+(CySCHR1<<index), | |
3246 | START_CHAR(info->tty)); | |
3247 | cy_writeb(base_addr+(CySCHR2<<index), | |
3248 | STOP_CHAR(info->tty)); | |
3249 | cy_writeb(base_addr+(CyCOR1<<index), info->cor1); | |
3250 | cy_writeb(base_addr+(CyCOR2<<index), info->cor2); | |
3251 | cy_writeb(base_addr+(CyCOR3<<index), info->cor3); | |
3252 | cy_writeb(base_addr+(CyCOR4<<index), info->cor4); | |
3253 | cy_writeb(base_addr+(CyCOR5<<index), info->cor5); | |
3254 | ||
3255 | cyy_issue_cmd(base_addr, | |
3256 | CyCOR_CHANGE|CyCOR1ch|CyCOR2ch|CyCOR3ch,index); | |
3257 | ||
3258 | cy_writeb(base_addr+(CyCAR<<index), | |
3259 | (u_char)channel); /* !!! Is this needed? */ | |
3260 | cy_writeb(base_addr+(CyRTPR<<index), (info->default_timeout | |
3261 | ? info->default_timeout | |
3262 | : 0x02)); /* 10ms rx timeout */ | |
3263 | ||
3264 | if (C_CLOCAL(info->tty)) { | |
3265 | /* without modem intr */ | |
3266 | cy_writeb(base_addr+(CySRER<<index), | |
3267 | cy_readb(base_addr+(CySRER<<index)) | CyMdmCh); | |
3268 | /* act on 1->0 modem transitions */ | |
3269 | if ((cflag & CRTSCTS) && info->rflow) { | |
3270 | cy_writeb(base_addr+(CyMCOR1<<index), | |
3271 | (CyCTS|rflow_thr[i])); | |
3272 | } else { | |
3273 | cy_writeb(base_addr+(CyMCOR1<<index), CyCTS); | |
3274 | } | |
3275 | /* act on 0->1 modem transitions */ | |
3276 | cy_writeb(base_addr+(CyMCOR2<<index), CyCTS); | |
3277 | } else { | |
3278 | /* without modem intr */ | |
3279 | cy_writeb(base_addr+(CySRER<<index), | |
3280 | cy_readb(base_addr+(CySRER<<index)) | CyMdmCh); | |
3281 | /* act on 1->0 modem transitions */ | |
3282 | if ((cflag & CRTSCTS) && info->rflow) { | |
3283 | cy_writeb(base_addr+(CyMCOR1<<index), | |
3284 | (CyDSR|CyCTS|CyRI|CyDCD|rflow_thr[i])); | |
3285 | } else { | |
3286 | cy_writeb(base_addr+(CyMCOR1<<index), | |
3287 | CyDSR|CyCTS|CyRI|CyDCD); | |
3288 | } | |
3289 | /* act on 0->1 modem transitions */ | |
3290 | cy_writeb(base_addr+(CyMCOR2<<index), | |
3291 | CyDSR|CyCTS|CyRI|CyDCD); | |
3292 | } | |
3293 | ||
3294 | if(i == 0){ /* baud rate is zero, turn off line */ | |
3295 | if (info->rtsdtr_inv) { | |
3296 | cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); | |
3297 | } else { | |
3298 | cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); | |
3299 | } | |
3300 | #ifdef CY_DEBUG_DTR | |
3301 | printk("cyc:set_line_char dropping DTR\n"); | |
3302 | printk(" status: 0x%x, 0x%x\n", | |
3303 | cy_readb(base_addr+(CyMSVR1<<index)), | |
3304 | cy_readb(base_addr+(CyMSVR2<<index))); | |
3305 | #endif | |
3306 | }else{ | |
3307 | if (info->rtsdtr_inv) { | |
3308 | cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); | |
3309 | } else { | |
3310 | cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); | |
3311 | } | |
3312 | #ifdef CY_DEBUG_DTR | |
3313 | printk("cyc:set_line_char raising DTR\n"); | |
3314 | printk(" status: 0x%x, 0x%x\n", | |
3315 | cy_readb(base_addr+(CyMSVR1<<index)), | |
3316 | cy_readb(base_addr+(CyMSVR2<<index))); | |
3317 | #endif | |
3318 | } | |
3319 | ||
3320 | if (info->tty){ | |
3321 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3322 | } | |
3323 | CY_UNLOCK(info, flags); | |
3324 | ||
3325 | } else { | |
3326 | struct FIRM_ID __iomem *firm_id; | |
3327 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3328 | struct BOARD_CTRL __iomem *board_ctrl; | |
3329 | struct CH_CTRL __iomem *ch_ctrl; | |
3330 | struct BUF_CTRL __iomem *buf_ctrl; | |
3331 | uclong sw_flow; | |
3332 | int retval; | |
3333 | ||
3334 | firm_id = cy_card[card].base_addr + ID_ADDRESS; | |
3335 | if (!ISZLOADED(cy_card[card])) { | |
3336 | return; | |
3337 | } | |
3338 | ||
3339 | zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3340 | board_ctrl = &zfw_ctrl->board_ctrl; | |
3341 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); | |
3342 | buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3343 | ||
3344 | /* baud rate */ | |
3345 | baud = tty_get_baud_rate(info->tty); | |
3346 | if ((baud == 38400) && | |
3347 | ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { | |
3348 | if (info->custom_divisor) | |
3349 | baud_rate = info->baud / info->custom_divisor; | |
3350 | else | |
3351 | baud_rate = info->baud; | |
3352 | } else if (baud > CYZ_MAX_SPEED) { | |
3353 | baud = CYZ_MAX_SPEED; | |
3354 | } | |
3355 | cy_writel(&ch_ctrl->comm_baud , baud); | |
3356 | ||
3357 | if (baud == 134) { | |
3358 | /* get it right for 134.5 baud */ | |
3359 | info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2; | |
3360 | } else if ((baud == 38400) && | |
3361 | ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { | |
3362 | info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2; | |
3363 | } else if (baud) { | |
3364 | info->timeout = (info->xmit_fifo_size*HZ*15/baud) + 2; | |
3365 | /* this needs to be propagated into the card info */ | |
3366 | } else { | |
3367 | info->timeout = 0; | |
3368 | } | |
3369 | ||
3370 | /* byte size and parity */ | |
3371 | switch(cflag & CSIZE){ | |
3372 | case CS5: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS5); break; | |
3373 | case CS6: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS6); break; | |
3374 | case CS7: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS7); break; | |
3375 | case CS8: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS8); break; | |
3376 | } | |
3377 | if(cflag & CSTOPB){ | |
3378 | cy_writel(&ch_ctrl->comm_data_l, | |
3379 | cy_readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); | |
3380 | }else{ | |
3381 | cy_writel(&ch_ctrl->comm_data_l, | |
3382 | cy_readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); | |
3383 | } | |
3384 | if (cflag & PARENB){ | |
3385 | if (cflag & PARODD){ | |
3386 | cy_writel(&ch_ctrl->comm_parity , C_PR_ODD); | |
3387 | }else{ | |
3388 | cy_writel(&ch_ctrl->comm_parity , C_PR_EVEN); | |
3389 | } | |
3390 | }else{ | |
3391 | cy_writel(&ch_ctrl->comm_parity , C_PR_NONE); | |
3392 | } | |
3393 | ||
3394 | /* CTS flow control flag */ | |
3395 | if (cflag & CRTSCTS){ | |
3396 | cy_writel(&ch_ctrl->hw_flow, | |
3397 | cy_readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); | |
3398 | }else{ | |
3399 | cy_writel(&ch_ctrl->hw_flow, | |
3400 | cy_readl(&ch_ctrl->hw_flow) & ~(C_RS_CTS | C_RS_RTS)); | |
3401 | } | |
3402 | /* As the HW flow control is done in firmware, the driver doesn't | |
3403 | need to care about it */ | |
3404 | info->flags &= ~ASYNC_CTS_FLOW; | |
3405 | ||
3406 | /* XON/XOFF/XANY flow control flags */ | |
3407 | sw_flow = 0; | |
3408 | if (iflag & IXON){ | |
3409 | sw_flow |= C_FL_OXX; | |
3410 | if (iflag & IXANY) | |
3411 | sw_flow |= C_FL_OIXANY; | |
3412 | } | |
3413 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
3414 | ||
3415 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L); | |
3416 | if (retval != 0){ | |
3417 | printk("cyc:set_line_char retval on ttyC%d was %x\n", | |
3418 | info->line, retval); | |
3419 | } | |
3420 | ||
3421 | /* CD sensitivity */ | |
3422 | if (cflag & CLOCAL){ | |
3423 | info->flags &= ~ASYNC_CHECK_CD; | |
3424 | }else{ | |
3425 | info->flags |= ASYNC_CHECK_CD; | |
3426 | } | |
3427 | ||
3428 | if(baud == 0){ /* baud rate is zero, turn off line */ | |
3429 | cy_writel(&ch_ctrl->rs_control, | |
3430 | cy_readl(&ch_ctrl->rs_control) & ~C_RS_DTR); | |
3431 | #ifdef CY_DEBUG_DTR | |
3432 | printk("cyc:set_line_char dropping Z DTR\n"); | |
3433 | #endif | |
3434 | }else{ | |
3435 | cy_writel(&ch_ctrl->rs_control, | |
3436 | cy_readl(&ch_ctrl->rs_control) | C_RS_DTR); | |
3437 | #ifdef CY_DEBUG_DTR | |
3438 | printk("cyc:set_line_char raising Z DTR\n"); | |
3439 | #endif | |
3440 | } | |
3441 | ||
3442 | retval = cyz_issue_cmd( &cy_card[card], channel, C_CM_IOCTLM, 0L); | |
3443 | if (retval != 0){ | |
3444 | printk("cyc:set_line_char(2) retval on ttyC%d was %x\n", | |
3445 | info->line, retval); | |
3446 | } | |
3447 | ||
3448 | if (info->tty){ | |
3449 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3450 | } | |
3451 | } | |
3452 | } /* set_line_char */ | |
3453 | ||
3454 | ||
3455 | static int | |
3456 | get_serial_info(struct cyclades_port * info, | |
3457 | struct serial_struct __user * retinfo) | |
3458 | { | |
3459 | struct serial_struct tmp; | |
3460 | struct cyclades_card *cinfo = &cy_card[info->card]; | |
3461 | ||
3462 | if (!retinfo) | |
3463 | return -EFAULT; | |
3464 | memset(&tmp, 0, sizeof(tmp)); | |
3465 | tmp.type = info->type; | |
3466 | tmp.line = info->line; | |
3467 | tmp.port = info->card * 0x100 + info->line - cinfo->first_line; | |
3468 | tmp.irq = cinfo->irq; | |
3469 | tmp.flags = info->flags; | |
3470 | tmp.close_delay = info->close_delay; | |
3471 | tmp.baud_base = info->baud; | |
3472 | tmp.custom_divisor = info->custom_divisor; | |
3473 | tmp.hub6 = 0; /*!!!*/ | |
3474 | return copy_to_user(retinfo,&tmp,sizeof(*retinfo))?-EFAULT:0; | |
3475 | } /* get_serial_info */ | |
3476 | ||
3477 | ||
3478 | static int | |
3479 | set_serial_info(struct cyclades_port * info, | |
3480 | struct serial_struct __user * new_info) | |
3481 | { | |
3482 | struct serial_struct new_serial; | |
3483 | struct cyclades_port old_info; | |
3484 | ||
3485 | if (copy_from_user(&new_serial,new_info,sizeof(new_serial))) | |
3486 | return -EFAULT; | |
3487 | old_info = *info; | |
3488 | ||
3489 | if (!capable(CAP_SYS_ADMIN)) { | |
3490 | if ((new_serial.close_delay != info->close_delay) || | |
3491 | (new_serial.baud_base != info->baud) || | |
3492 | ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) != | |
3493 | (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))) | |
3494 | return -EPERM; | |
3495 | info->flags = ((info->flags & ~ASYNC_USR_MASK) | | |
3496 | (new_serial.flags & ASYNC_USR_MASK)); | |
3497 | info->baud = new_serial.baud_base; | |
3498 | info->custom_divisor = new_serial.custom_divisor; | |
3499 | goto check_and_exit; | |
3500 | } | |
3501 | ||
3502 | ||
3503 | /* | |
3504 | * OK, past this point, all the error checking has been done. | |
3505 | * At this point, we start making changes..... | |
3506 | */ | |
3507 | ||
3508 | info->baud = new_serial.baud_base; | |
3509 | info->custom_divisor = new_serial.custom_divisor; | |
3510 | info->flags = ((info->flags & ~ASYNC_FLAGS) | | |
3511 | (new_serial.flags & ASYNC_FLAGS)); | |
3512 | info->close_delay = new_serial.close_delay * HZ/100; | |
3513 | info->closing_wait = new_serial.closing_wait * HZ/100; | |
3514 | ||
3515 | check_and_exit: | |
3516 | if (info->flags & ASYNC_INITIALIZED){ | |
3517 | set_line_char(info); | |
3518 | return 0; | |
3519 | }else{ | |
3520 | return startup(info); | |
3521 | } | |
3522 | } /* set_serial_info */ | |
3523 | ||
3524 | /* | |
3525 | * get_lsr_info - get line status register info | |
3526 | * | |
3527 | * Purpose: Let user call ioctl() to get info when the UART physically | |
3528 | * is emptied. On bus types like RS485, the transmitter must | |
3529 | * release the bus after transmitting. This must be done when | |
3530 | * the transmit shift register is empty, not be done when the | |
3531 | * transmit holding register is empty. This functionality | |
3532 | * allows an RS485 driver to be written in user space. | |
3533 | */ | |
3534 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) | |
3535 | { | |
3536 | int card, chip, channel, index; | |
3537 | unsigned char status; | |
3538 | unsigned int result; | |
3539 | unsigned long flags; | |
3540 | void __iomem *base_addr; | |
3541 | ||
3542 | card = info->card; | |
3543 | channel = (info->line) - (cy_card[card].first_line); | |
3544 | if (!IS_CYC_Z(cy_card[card])) { | |
3545 | chip = channel>>2; | |
3546 | channel &= 0x03; | |
3547 | index = cy_card[card].bus_index; | |
3548 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3549 | ||
3550 | CY_LOCK(info, flags); | |
3551 | status = cy_readb(base_addr+(CySRER<<index)) & (CyTxRdy|CyTxMpty); | |
3552 | CY_UNLOCK(info, flags); | |
3553 | result = (status ? 0 : TIOCSER_TEMT); | |
3554 | } else { | |
3555 | /* Not supported yet */ | |
3556 | return -EINVAL; | |
3557 | } | |
3558 | return put_user(result, (unsigned long __user *) value); | |
3559 | } | |
3560 | ||
3561 | static int | |
3562 | cy_tiocmget(struct tty_struct *tty, struct file *file) | |
3563 | { | |
3564 | struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; | |
3565 | int card,chip,channel,index; | |
3566 | void __iomem *base_addr; | |
3567 | unsigned long flags; | |
3568 | unsigned char status; | |
3569 | unsigned long lstatus; | |
3570 | unsigned int result; | |
3571 | struct FIRM_ID __iomem *firm_id; | |
3572 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3573 | struct BOARD_CTRL __iomem *board_ctrl; | |
3574 | struct CH_CTRL __iomem *ch_ctrl; | |
3575 | ||
3576 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3577 | return -ENODEV; | |
3578 | ||
3579 | card = info->card; | |
3580 | channel = (info->line) - (cy_card[card].first_line); | |
3581 | if (!IS_CYC_Z(cy_card[card])) { | |
3582 | chip = channel>>2; | |
3583 | channel &= 0x03; | |
3584 | index = cy_card[card].bus_index; | |
3585 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3586 | ||
3587 | CY_LOCK(info, flags); | |
3588 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
3589 | status = cy_readb(base_addr+(CyMSVR1<<index)); | |
3590 | status |= cy_readb(base_addr+(CyMSVR2<<index)); | |
3591 | CY_UNLOCK(info, flags); | |
3592 | ||
3593 | if (info->rtsdtr_inv) { | |
3594 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | |
3595 | | ((status & CyDTR) ? TIOCM_RTS : 0); | |
3596 | } else { | |
3597 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | |
3598 | | ((status & CyDTR) ? TIOCM_DTR : 0); | |
3599 | } | |
3600 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | |
3601 | | ((status & CyRI) ? TIOCM_RNG : 0) | |
3602 | | ((status & CyDSR) ? TIOCM_DSR : 0) | |
3603 | | ((status & CyCTS) ? TIOCM_CTS : 0); | |
3604 | } else { | |
3605 | base_addr = cy_card[card].base_addr; | |
3606 | ||
3607 | if (cy_card[card].num_chips != -1){ | |
3608 | return -EINVAL; | |
3609 | } | |
3610 | ||
3611 | firm_id = cy_card[card].base_addr + ID_ADDRESS; | |
3612 | if (ISZLOADED(cy_card[card])) { | |
3613 | zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3614 | board_ctrl = &zfw_ctrl->board_ctrl; | |
3615 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
3616 | lstatus = cy_readl(&ch_ctrl[channel].rs_status); | |
3617 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
3618 | | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | |
3619 | | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | |
3620 | | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | |
3621 | | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | |
3622 | | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
3623 | }else{ | |
3624 | result = 0; | |
3625 | return -ENODEV; | |
3626 | } | |
3627 | ||
3628 | } | |
3629 | return result; | |
3630 | } /* cy_tiomget */ | |
3631 | ||
3632 | ||
3633 | static int | |
3634 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
3635 | unsigned int set, unsigned int clear) | |
3636 | { | |
3637 | struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; | |
3638 | int card,chip,channel,index; | |
3639 | void __iomem *base_addr; | |
3640 | unsigned long flags; | |
3641 | struct FIRM_ID __iomem *firm_id; | |
3642 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3643 | struct BOARD_CTRL __iomem *board_ctrl; | |
3644 | struct CH_CTRL __iomem *ch_ctrl; | |
3645 | int retval; | |
3646 | ||
3647 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3648 | return -ENODEV; | |
3649 | ||
3650 | card = info->card; | |
3651 | channel = (info->line) - (cy_card[card].first_line); | |
3652 | if (!IS_CYC_Z(cy_card[card])) { | |
3653 | chip = channel>>2; | |
3654 | channel &= 0x03; | |
3655 | index = cy_card[card].bus_index; | |
3656 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3657 | ||
3658 | if (set & TIOCM_RTS){ | |
3659 | CY_LOCK(info, flags); | |
3660 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
3661 | if (info->rtsdtr_inv) { | |
3662 | cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); | |
3663 | } else { | |
3664 | cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); | |
3665 | } | |
3666 | CY_UNLOCK(info, flags); | |
3667 | } | |
3668 | if (clear & TIOCM_RTS) { | |
3669 | CY_LOCK(info, flags); | |
3670 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
3671 | if (info->rtsdtr_inv) { | |
3672 | cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); | |
3673 | } else { | |
3674 | cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); | |
3675 | } | |
3676 | CY_UNLOCK(info, flags); | |
3677 | } | |
3678 | if (set & TIOCM_DTR){ | |
3679 | CY_LOCK(info, flags); | |
3680 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
3681 | if (info->rtsdtr_inv) { | |
3682 | cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); | |
3683 | } else { | |
3684 | cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); | |
3685 | } | |
3686 | #ifdef CY_DEBUG_DTR | |
3687 | printk("cyc:set_modem_info raising DTR\n"); | |
3688 | printk(" status: 0x%x, 0x%x\n", | |
3689 | cy_readb(base_addr+(CyMSVR1<<index)), | |
3690 | cy_readb(base_addr+(CyMSVR2<<index))); | |
3691 | #endif | |
3692 | CY_UNLOCK(info, flags); | |
3693 | } | |
3694 | if (clear & TIOCM_DTR) { | |
3695 | CY_LOCK(info, flags); | |
3696 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
3697 | if (info->rtsdtr_inv) { | |
3698 | cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); | |
3699 | } else { | |
3700 | cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); | |
3701 | } | |
3702 | ||
3703 | #ifdef CY_DEBUG_DTR | |
3704 | printk("cyc:set_modem_info dropping DTR\n"); | |
3705 | printk(" status: 0x%x, 0x%x\n", | |
3706 | cy_readb(base_addr+(CyMSVR1<<index)), | |
3707 | cy_readb(base_addr+(CyMSVR2<<index))); | |
3708 | #endif | |
3709 | CY_UNLOCK(info, flags); | |
3710 | } | |
3711 | } else { | |
3712 | base_addr = cy_card[card].base_addr; | |
3713 | ||
3714 | firm_id = cy_card[card].base_addr + ID_ADDRESS; | |
3715 | if (ISZLOADED(cy_card[card])) { | |
3716 | zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3717 | board_ctrl = &zfw_ctrl->board_ctrl; | |
3718 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
3719 | ||
3720 | if (set & TIOCM_RTS){ | |
3721 | CY_LOCK(info, flags); | |
3722 | cy_writel(&ch_ctrl[channel].rs_control, | |
3723 | cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS); | |
3724 | CY_UNLOCK(info, flags); | |
3725 | } | |
3726 | if (clear & TIOCM_RTS) { | |
3727 | CY_LOCK(info, flags); | |
3728 | cy_writel(&ch_ctrl[channel].rs_control, | |
3729 | cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_RTS); | |
3730 | CY_UNLOCK(info, flags); | |
3731 | } | |
3732 | if (set & TIOCM_DTR){ | |
3733 | CY_LOCK(info, flags); | |
3734 | cy_writel(&ch_ctrl[channel].rs_control, | |
3735 | cy_readl(&ch_ctrl[channel].rs_control) | C_RS_DTR); | |
3736 | #ifdef CY_DEBUG_DTR | |
3737 | printk("cyc:set_modem_info raising Z DTR\n"); | |
3738 | #endif | |
3739 | CY_UNLOCK(info, flags); | |
3740 | } | |
3741 | if (clear & TIOCM_DTR) { | |
3742 | CY_LOCK(info, flags); | |
3743 | cy_writel(&ch_ctrl[channel].rs_control, | |
3744 | cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_DTR); | |
3745 | #ifdef CY_DEBUG_DTR | |
3746 | printk("cyc:set_modem_info clearing Z DTR\n"); | |
3747 | #endif | |
3748 | CY_UNLOCK(info, flags); | |
3749 | } | |
3750 | }else{ | |
3751 | return -ENODEV; | |
3752 | } | |
3753 | CY_LOCK(info, flags); | |
3754 | retval = cyz_issue_cmd(&cy_card[info->card], | |
3755 | channel, C_CM_IOCTLM,0L); | |
3756 | if (retval != 0){ | |
3757 | printk("cyc:set_modem_info retval on ttyC%d was %x\n", | |
3758 | info->line, retval); | |
3759 | } | |
3760 | CY_UNLOCK(info, flags); | |
3761 | } | |
3762 | return 0; | |
3763 | } /* cy_tiocmset */ | |
3764 | ||
3765 | /* | |
3766 | * cy_break() --- routine which turns the break handling on or off | |
3767 | */ | |
3768 | static void | |
3769 | cy_break(struct tty_struct *tty, int break_state) | |
3770 | { | |
3771 | struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; | |
3772 | unsigned long flags; | |
3773 | ||
3774 | if (serial_paranoia_check(info, tty->name, "cy_break")) | |
3775 | return; | |
3776 | ||
3777 | CY_LOCK(info, flags); | |
3778 | if (!IS_CYC_Z(cy_card[info->card])) { | |
3779 | /* Let the transmit ISR take care of this (since it | |
3780 | requires stuffing characters into the output stream). | |
3781 | */ | |
3782 | if (break_state == -1) { | |
3783 | if (!info->breakon) { | |
3784 | info->breakon = 1; | |
3785 | if (!info->xmit_cnt) { | |
3786 | CY_UNLOCK(info, flags); | |
3787 | start_xmit(info); | |
3788 | CY_LOCK(info, flags); | |
3789 | } | |
3790 | } | |
3791 | } else { | |
3792 | if (!info->breakoff) { | |
3793 | info->breakoff = 1; | |
3794 | if (!info->xmit_cnt) { | |
3795 | CY_UNLOCK(info, flags); | |
3796 | start_xmit(info); | |
3797 | CY_LOCK(info, flags); | |
3798 | } | |
3799 | } | |
3800 | } | |
3801 | } else { | |
3802 | int retval; | |
3803 | ||
3804 | if (break_state == -1) { | |
3805 | retval = cyz_issue_cmd(&cy_card[info->card], | |
3806 | (info->line) - (cy_card[info->card].first_line), | |
3807 | C_CM_SET_BREAK, 0L); | |
3808 | if (retval != 0) { | |
3809 | printk("cyc:cy_break (set) retval on ttyC%d was %x\n", | |
3810 | info->line, retval); | |
3811 | } | |
3812 | } else { | |
3813 | retval = cyz_issue_cmd(&cy_card[info->card], | |
3814 | (info->line) - (cy_card[info->card].first_line), | |
3815 | C_CM_CLR_BREAK, 0L); | |
3816 | if (retval != 0) { | |
3817 | printk("cyc:cy_break (clr) retval on ttyC%d was %x\n", | |
3818 | info->line, retval); | |
3819 | } | |
3820 | } | |
3821 | } | |
3822 | CY_UNLOCK(info, flags); | |
3823 | } /* cy_break */ | |
3824 | ||
3825 | static int | |
3826 | get_mon_info(struct cyclades_port * info, struct cyclades_monitor __user * mon) | |
3827 | { | |
3828 | ||
3829 | if(copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) | |
3830 | return -EFAULT; | |
3831 | info->mon.int_count = 0; | |
3832 | info->mon.char_count = 0; | |
3833 | info->mon.char_max = 0; | |
3834 | info->mon.char_last = 0; | |
3835 | return 0; | |
3836 | }/* get_mon_info */ | |
3837 | ||
3838 | ||
3839 | static int | |
3840 | set_threshold(struct cyclades_port * info, unsigned long value) | |
3841 | { | |
3842 | void __iomem *base_addr; | |
3843 | int card,channel,chip,index; | |
3844 | unsigned long flags; | |
3845 | ||
3846 | card = info->card; | |
3847 | channel = info->line - cy_card[card].first_line; | |
3848 | if (!IS_CYC_Z(cy_card[card])) { | |
3849 | chip = channel>>2; | |
3850 | channel &= 0x03; | |
3851 | index = cy_card[card].bus_index; | |
3852 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3853 | ||
3854 | info->cor3 &= ~CyREC_FIFO; | |
3855 | info->cor3 |= value & CyREC_FIFO; | |
3856 | ||
3857 | CY_LOCK(info, flags); | |
3858 | cy_writeb(base_addr+(CyCOR3<<index), info->cor3); | |
3859 | cyy_issue_cmd(base_addr,CyCOR_CHANGE|CyCOR3ch,index); | |
3860 | CY_UNLOCK(info, flags); | |
3861 | } else { | |
3862 | // Nothing to do! | |
3863 | } | |
3864 | return 0; | |
3865 | }/* set_threshold */ | |
3866 | ||
3867 | ||
3868 | static int | |
3869 | get_threshold(struct cyclades_port * info, unsigned long __user *value) | |
3870 | { | |
3871 | void __iomem *base_addr; | |
3872 | int card,channel,chip,index; | |
3873 | unsigned long tmp; | |
3874 | ||
3875 | card = info->card; | |
3876 | channel = info->line - cy_card[card].first_line; | |
3877 | if (!IS_CYC_Z(cy_card[card])) { | |
3878 | chip = channel>>2; | |
3879 | channel &= 0x03; | |
3880 | index = cy_card[card].bus_index; | |
3881 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3882 | ||
3883 | tmp = cy_readb(base_addr+(CyCOR3<<index)) & CyREC_FIFO; | |
3884 | return put_user(tmp,value); | |
3885 | } else { | |
3886 | // Nothing to do! | |
3887 | return 0; | |
3888 | } | |
3889 | }/* get_threshold */ | |
3890 | ||
3891 | ||
3892 | static int | |
3893 | set_default_threshold(struct cyclades_port * info, unsigned long value) | |
3894 | { | |
3895 | info->default_threshold = value & 0x0f; | |
3896 | return 0; | |
3897 | }/* set_default_threshold */ | |
3898 | ||
3899 | ||
3900 | static int | |
3901 | get_default_threshold(struct cyclades_port * info, unsigned long __user *value) | |
3902 | { | |
3903 | return put_user(info->default_threshold,value); | |
3904 | }/* get_default_threshold */ | |
3905 | ||
3906 | ||
3907 | static int | |
3908 | set_timeout(struct cyclades_port * info, unsigned long value) | |
3909 | { | |
3910 | void __iomem *base_addr; | |
3911 | int card,channel,chip,index; | |
3912 | unsigned long flags; | |
3913 | ||
3914 | card = info->card; | |
3915 | channel = info->line - cy_card[card].first_line; | |
3916 | if (!IS_CYC_Z(cy_card[card])) { | |
3917 | chip = channel>>2; | |
3918 | channel &= 0x03; | |
3919 | index = cy_card[card].bus_index; | |
3920 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3921 | ||
3922 | CY_LOCK(info, flags); | |
3923 | cy_writeb(base_addr+(CyRTPR<<index), value & 0xff); | |
3924 | CY_UNLOCK(info, flags); | |
3925 | } else { | |
3926 | // Nothing to do! | |
3927 | } | |
3928 | return 0; | |
3929 | }/* set_timeout */ | |
3930 | ||
3931 | ||
3932 | static int | |
3933 | get_timeout(struct cyclades_port * info, unsigned long __user *value) | |
3934 | { | |
3935 | void __iomem *base_addr; | |
3936 | int card,channel,chip,index; | |
3937 | unsigned long tmp; | |
3938 | ||
3939 | card = info->card; | |
3940 | channel = info->line - cy_card[card].first_line; | |
3941 | if (!IS_CYC_Z(cy_card[card])) { | |
3942 | chip = channel>>2; | |
3943 | channel &= 0x03; | |
3944 | index = cy_card[card].bus_index; | |
3945 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
3946 | ||
3947 | tmp = cy_readb(base_addr+(CyRTPR<<index)); | |
3948 | return put_user(tmp,value); | |
3949 | } else { | |
3950 | // Nothing to do! | |
3951 | return 0; | |
3952 | } | |
3953 | }/* get_timeout */ | |
3954 | ||
3955 | ||
3956 | static int | |
3957 | set_default_timeout(struct cyclades_port * info, unsigned long value) | |
3958 | { | |
3959 | info->default_timeout = value & 0xff; | |
3960 | return 0; | |
3961 | }/* set_default_timeout */ | |
3962 | ||
3963 | ||
3964 | static int | |
3965 | get_default_timeout(struct cyclades_port * info, unsigned long __user *value) | |
3966 | { | |
3967 | return put_user(info->default_timeout,value); | |
3968 | }/* get_default_timeout */ | |
3969 | ||
3970 | /* | |
3971 | * This routine allows the tty driver to implement device- | |
3972 | * specific ioctl's. If the ioctl number passed in cmd is | |
3973 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
3974 | */ | |
3975 | static int | |
3976 | cy_ioctl(struct tty_struct *tty, struct file * file, | |
3977 | unsigned int cmd, unsigned long arg) | |
3978 | { | |
3979 | struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; | |
3980 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ | |
3981 | struct serial_icounter_struct __user *p_cuser; /* user space */ | |
3982 | int ret_val = 0; | |
3983 | unsigned long flags; | |
3984 | void __user *argp = (void __user *)arg; | |
3985 | ||
3986 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
3987 | return -ENODEV; | |
3988 | ||
3989 | #ifdef CY_DEBUG_OTHER | |
3990 | printk("cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", | |
3991 | info->line, cmd, arg); /* */ | |
3992 | #endif | |
3993 | ||
3994 | switch (cmd) { | |
3995 | case CYGETMON: | |
3996 | ret_val = get_mon_info(info, argp); | |
3997 | break; | |
3998 | case CYGETTHRESH: | |
3999 | ret_val = get_threshold(info, argp); | |
4000 | break; | |
4001 | case CYSETTHRESH: | |
4002 | ret_val = set_threshold(info, arg); | |
4003 | break; | |
4004 | case CYGETDEFTHRESH: | |
4005 | ret_val = get_default_threshold(info, argp); | |
4006 | break; | |
4007 | case CYSETDEFTHRESH: | |
4008 | ret_val = set_default_threshold(info, arg); | |
4009 | break; | |
4010 | case CYGETTIMEOUT: | |
4011 | ret_val = get_timeout(info, argp); | |
4012 | break; | |
4013 | case CYSETTIMEOUT: | |
4014 | ret_val = set_timeout(info, arg); | |
4015 | break; | |
4016 | case CYGETDEFTIMEOUT: | |
4017 | ret_val = get_default_timeout(info, argp); | |
4018 | break; | |
4019 | case CYSETDEFTIMEOUT: | |
4020 | ret_val = set_default_timeout(info, arg); | |
4021 | break; | |
4022 | case CYSETRFLOW: | |
4023 | info->rflow = (int)arg; | |
4024 | ret_val = 0; | |
4025 | break; | |
4026 | case CYGETRFLOW: | |
4027 | ret_val = info->rflow; | |
4028 | break; | |
4029 | case CYSETRTSDTR_INV: | |
4030 | info->rtsdtr_inv = (int)arg; | |
4031 | ret_val = 0; | |
4032 | break; | |
4033 | case CYGETRTSDTR_INV: | |
4034 | ret_val = info->rtsdtr_inv; | |
4035 | break; | |
4036 | case CYGETCARDINFO: | |
4037 | if (copy_to_user(argp, &cy_card[info->card], | |
4038 | sizeof (struct cyclades_card))) { | |
4039 | ret_val = -EFAULT; | |
4040 | break; | |
4041 | } | |
4042 | ret_val = 0; | |
4043 | break; | |
4044 | case CYGETCD1400VER: | |
4045 | ret_val = info->chip_rev; | |
4046 | break; | |
4047 | #ifndef CONFIG_CYZ_INTR | |
4048 | case CYZSETPOLLCYCLE: | |
4049 | cyz_polling_cycle = (arg * HZ) / 1000; | |
4050 | ret_val = 0; | |
4051 | break; | |
4052 | case CYZGETPOLLCYCLE: | |
4053 | ret_val = (cyz_polling_cycle * 1000) / HZ; | |
4054 | break; | |
4055 | #endif /* CONFIG_CYZ_INTR */ | |
4056 | case CYSETWAIT: | |
4057 | info->closing_wait = (unsigned short)arg * HZ/100; | |
4058 | ret_val = 0; | |
4059 | break; | |
4060 | case CYGETWAIT: | |
4061 | ret_val = info->closing_wait / (HZ/100); | |
4062 | break; | |
4063 | case TIOCGSERIAL: | |
4064 | ret_val = get_serial_info(info, argp); | |
4065 | break; | |
4066 | case TIOCSSERIAL: | |
4067 | ret_val = set_serial_info(info, argp); | |
4068 | break; | |
4069 | case TIOCSERGETLSR: /* Get line status register */ | |
4070 | ret_val = get_lsr_info(info, argp); | |
4071 | break; | |
4072 | /* | |
4073 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
4074 | * - mask passed in arg for lines of interest | |
4075 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
4076 | * Caller should use TIOCGICOUNT to see which one it was | |
4077 | */ | |
4078 | case TIOCMIWAIT: | |
4079 | CY_LOCK(info, flags); | |
4080 | /* note the counters on entry */ | |
4081 | cprev = info->icount; | |
4082 | CY_UNLOCK(info, flags); | |
4083 | while (1) { | |
4084 | interruptible_sleep_on(&info->delta_msr_wait); | |
4085 | /* see if a signal did it */ | |
4086 | if (signal_pending(current)) { | |
4087 | return -ERESTARTSYS; | |
4088 | } | |
4089 | ||
4090 | CY_LOCK(info, flags); | |
4091 | cnow = info->icount; /* atomic copy */ | |
4092 | CY_UNLOCK(info, flags); | |
4093 | ||
4094 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
4095 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { | |
4096 | return -EIO; /* no change => error */ | |
4097 | } | |
4098 | if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
4099 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
4100 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4101 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { | |
4102 | return 0; | |
4103 | } | |
4104 | cprev = cnow; | |
4105 | } | |
4106 | /* NOTREACHED */ | |
4107 | ||
4108 | /* | |
4109 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
4110 | * Return: write counters to the user passed counter struct | |
4111 | * NB: both 1->0 and 0->1 transitions are counted except for | |
4112 | * RI where only 0->1 is counted. | |
4113 | */ | |
4114 | case TIOCGICOUNT: | |
4115 | CY_LOCK(info, flags); | |
4116 | cnow = info->icount; | |
4117 | CY_UNLOCK(info, flags); | |
4118 | p_cuser = argp; | |
4119 | ret_val = put_user(cnow.cts, &p_cuser->cts); | |
4120 | if (ret_val) return ret_val; | |
4121 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); | |
4122 | if (ret_val) return ret_val; | |
4123 | ret_val = put_user(cnow.rng, &p_cuser->rng); | |
4124 | if (ret_val) return ret_val; | |
4125 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); | |
4126 | if (ret_val) return ret_val; | |
4127 | ret_val = put_user(cnow.rx, &p_cuser->rx); | |
4128 | if (ret_val) return ret_val; | |
4129 | ret_val = put_user(cnow.tx, &p_cuser->tx); | |
4130 | if (ret_val) return ret_val; | |
4131 | ret_val = put_user(cnow.frame, &p_cuser->frame); | |
4132 | if (ret_val) return ret_val; | |
4133 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); | |
4134 | if (ret_val) return ret_val; | |
4135 | ret_val = put_user(cnow.parity, &p_cuser->parity); | |
4136 | if (ret_val) return ret_val; | |
4137 | ret_val = put_user(cnow.brk, &p_cuser->brk); | |
4138 | if (ret_val) return ret_val; | |
4139 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); | |
4140 | if (ret_val) return ret_val; | |
4141 | ret_val = 0; | |
4142 | break; | |
4143 | default: | |
4144 | ret_val = -ENOIOCTLCMD; | |
4145 | } | |
4146 | ||
4147 | #ifdef CY_DEBUG_OTHER | |
4148 | printk(" cyc:cy_ioctl done\n"); | |
4149 | #endif | |
4150 | ||
4151 | return ret_val; | |
4152 | } /* cy_ioctl */ | |
4153 | ||
4154 | ||
4155 | /* | |
4156 | * This routine allows the tty driver to be notified when | |
4157 | * device's termios settings have changed. Note that a | |
4158 | * well-designed tty driver should be prepared to accept the case | |
4159 | * where old == NULL, and try to do something rational. | |
4160 | */ | |
4161 | static void | |
4162 | cy_set_termios(struct tty_struct *tty, struct termios * old_termios) | |
4163 | { | |
4164 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
4165 | ||
4166 | #ifdef CY_DEBUG_OTHER | |
4167 | printk("cyc:cy_set_termios ttyC%d\n", info->line); | |
4168 | #endif | |
4169 | ||
4170 | if ((tty->termios->c_cflag == old_termios->c_cflag) && | |
4171 | ((tty->termios->c_iflag & (IXON|IXANY)) == | |
4172 | (old_termios->c_iflag & (IXON|IXANY)))) | |
4173 | return; | |
4174 | set_line_char(info); | |
4175 | ||
4176 | if ((old_termios->c_cflag & CRTSCTS) && | |
4177 | !(tty->termios->c_cflag & CRTSCTS)) { | |
4178 | tty->hw_stopped = 0; | |
4179 | cy_start(tty); | |
4180 | } | |
4181 | #if 0 | |
4182 | /* | |
4183 | * No need to wake up processes in open wait, since they | |
4184 | * sample the CLOCAL flag once, and don't recheck it. | |
4185 | * XXX It's not clear whether the current behavior is correct | |
4186 | * or not. Hence, this may change..... | |
4187 | */ | |
4188 | if (!(old_termios->c_cflag & CLOCAL) && | |
4189 | (tty->termios->c_cflag & CLOCAL)) | |
4190 | wake_up_interruptible(&info->open_wait); | |
4191 | #endif | |
4192 | ||
4193 | return; | |
4194 | } /* cy_set_termios */ | |
4195 | ||
4196 | /* This function is used to send a high-priority XON/XOFF character to | |
4197 | the device. | |
4198 | */ | |
4199 | static void | |
4200 | cy_send_xchar (struct tty_struct *tty, char ch) | |
4201 | { | |
4202 | struct cyclades_port *info = (struct cyclades_port *) tty->driver_data; | |
4203 | int card, channel; | |
4204 | ||
4205 | if (serial_paranoia_check (info, tty->name, "cy_send_xchar")) | |
4206 | return; | |
4207 | ||
4208 | info->x_char = ch; | |
4209 | ||
4210 | if (ch) | |
4211 | cy_start (tty); | |
4212 | ||
4213 | card = info->card; | |
4214 | channel = info->line - cy_card[card].first_line; | |
4215 | ||
4216 | if (IS_CYC_Z (cy_card[card])) { | |
4217 | if (ch == STOP_CHAR (tty)) | |
4218 | cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXOFF, 0L); | |
4219 | else if (ch == START_CHAR (tty)) | |
4220 | cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXON, 0L); | |
4221 | } | |
4222 | } | |
4223 | ||
4224 | /* This routine is called by the upper-layer tty layer to signal | |
4225 | that incoming characters should be throttled because the input | |
4226 | buffers are close to full. | |
4227 | */ | |
4228 | static void | |
4229 | cy_throttle(struct tty_struct * tty) | |
4230 | { | |
4231 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
4232 | unsigned long flags; | |
4233 | void __iomem *base_addr; | |
4234 | int card,chip,channel,index; | |
4235 | ||
4236 | #ifdef CY_DEBUG_THROTTLE | |
4237 | char buf[64]; | |
4238 | ||
4239 | printk("cyc:throttle %s: %d....ttyC%d\n", | |
4240 | tty_name(tty, buf), | |
4241 | tty->ldisc.chars_in_buffer(tty), info->line); | |
4242 | #endif | |
4243 | ||
4244 | if (serial_paranoia_check(info, tty->name, "cy_throttle")){ | |
4245 | return; | |
4246 | } | |
4247 | ||
4248 | card = info->card; | |
4249 | ||
4250 | if (I_IXOFF(tty)) { | |
4251 | if (!IS_CYC_Z (cy_card[card])) | |
4252 | cy_send_xchar (tty, STOP_CHAR (tty)); | |
4253 | else | |
4254 | info->throttle = 1; | |
4255 | } | |
4256 | ||
4257 | if (tty->termios->c_cflag & CRTSCTS) { | |
4258 | channel = info->line - cy_card[card].first_line; | |
4259 | if (!IS_CYC_Z(cy_card[card])) { | |
4260 | chip = channel>>2; | |
4261 | channel &= 0x03; | |
4262 | index = cy_card[card].bus_index; | |
4263 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
4264 | ||
4265 | CY_LOCK(info, flags); | |
4266 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
4267 | if (info->rtsdtr_inv) { | |
4268 | cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); | |
4269 | } else { | |
4270 | cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); | |
4271 | } | |
4272 | CY_UNLOCK(info, flags); | |
4273 | } else { | |
4274 | info->throttle = 1; | |
4275 | } | |
4276 | } | |
4277 | ||
4278 | return; | |
4279 | } /* cy_throttle */ | |
4280 | ||
4281 | ||
4282 | /* | |
4283 | * This routine notifies the tty driver that it should signal | |
4284 | * that characters can now be sent to the tty without fear of | |
4285 | * overrunning the input buffers of the line disciplines. | |
4286 | */ | |
4287 | static void | |
4288 | cy_unthrottle(struct tty_struct * tty) | |
4289 | { | |
4290 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
4291 | unsigned long flags; | |
4292 | void __iomem *base_addr; | |
4293 | int card,chip,channel,index; | |
4294 | ||
4295 | #ifdef CY_DEBUG_THROTTLE | |
4296 | char buf[64]; | |
4297 | ||
4298 | printk("cyc:unthrottle %s: %d....ttyC%d\n", | |
4299 | tty_name(tty, buf), | |
4300 | tty->ldisc.chars_in_buffer(tty), info->line); | |
4301 | #endif | |
4302 | ||
4303 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")){ | |
4304 | return; | |
4305 | } | |
4306 | ||
4307 | if (I_IXOFF(tty)) { | |
4308 | if (info->x_char) | |
4309 | info->x_char = 0; | |
4310 | else | |
4311 | cy_send_xchar (tty, START_CHAR (tty)); | |
4312 | } | |
4313 | ||
4314 | if (tty->termios->c_cflag & CRTSCTS) { | |
4315 | card = info->card; | |
4316 | channel = info->line - cy_card[card].first_line; | |
4317 | if (!IS_CYC_Z(cy_card[card])) { | |
4318 | chip = channel>>2; | |
4319 | channel &= 0x03; | |
4320 | index = cy_card[card].bus_index; | |
4321 | base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); | |
4322 | ||
4323 | CY_LOCK(info, flags); | |
4324 | cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); | |
4325 | if (info->rtsdtr_inv) { | |
4326 | cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); | |
4327 | } else { | |
4328 | cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); | |
4329 | } | |
4330 | CY_UNLOCK(info, flags); | |
4331 | } else { | |
4332 | info->throttle = 0; | |
4333 | } | |
4334 | } | |
4335 | ||
4336 | return; | |
4337 | } /* cy_unthrottle */ | |
4338 | ||
4339 | ||
4340 | /* cy_start and cy_stop provide software output flow control as a | |
4341 | function of XON/XOFF, software CTS, and other such stuff. | |
4342 | */ | |
4343 | static void | |
4344 | cy_stop(struct tty_struct *tty) | |
4345 | { | |
4346 | struct cyclades_card *cinfo; | |
4347 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
4348 | void __iomem *base_addr; | |
4349 | int chip,channel,index; | |
4350 | unsigned long flags; | |
4351 | ||
4352 | #ifdef CY_DEBUG_OTHER | |
4353 | printk("cyc:cy_stop ttyC%d\n", info->line); /* */ | |
4354 | #endif | |
4355 | ||
4356 | if (serial_paranoia_check(info, tty->name, "cy_stop")) | |
4357 | return; | |
4358 | ||
4359 | cinfo = &cy_card[info->card]; | |
4360 | channel = info->line - cinfo->first_line; | |
4361 | if (!IS_CYC_Z(*cinfo)) { | |
4362 | index = cinfo->bus_index; | |
4363 | chip = channel>>2; | |
4364 | channel &= 0x03; | |
4365 | base_addr = cy_card[info->card].base_addr + (cy_chip_offset[chip]<<index); | |
4366 | ||
4367 | CY_LOCK(info, flags); | |
4368 | cy_writeb(base_addr+(CyCAR<<index), | |
4369 | (u_char)(channel & 0x0003)); /* index channel */ | |
4370 | cy_writeb(base_addr+(CySRER<<index), | |
4371 | cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy); | |
4372 | CY_UNLOCK(info, flags); | |
4373 | } else { | |
4374 | // Nothing to do! | |
4375 | } | |
4376 | ||
4377 | return; | |
4378 | } /* cy_stop */ | |
4379 | ||
4380 | ||
4381 | static void | |
4382 | cy_start(struct tty_struct *tty) | |
4383 | { | |
4384 | struct cyclades_card *cinfo; | |
4385 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
4386 | void __iomem *base_addr; | |
4387 | int chip,channel,index; | |
4388 | unsigned long flags; | |
4389 | ||
4390 | #ifdef CY_DEBUG_OTHER | |
4391 | printk("cyc:cy_start ttyC%d\n", info->line); /* */ | |
4392 | #endif | |
4393 | ||
4394 | if (serial_paranoia_check(info, tty->name, "cy_start")) | |
4395 | return; | |
4396 | ||
4397 | cinfo = &cy_card[info->card]; | |
4398 | channel = info->line - cinfo->first_line; | |
4399 | index = cinfo->bus_index; | |
4400 | if (!IS_CYC_Z(*cinfo)) { | |
4401 | chip = channel>>2; | |
4402 | channel &= 0x03; | |
4403 | base_addr = cy_card[info->card].base_addr + (cy_chip_offset[chip]<<index); | |
4404 | ||
4405 | CY_LOCK(info, flags); | |
4406 | cy_writeb(base_addr+(CyCAR<<index), | |
4407 | (u_char)(channel & 0x0003)); /* index channel */ | |
4408 | cy_writeb(base_addr+(CySRER<<index), | |
4409 | cy_readb(base_addr+(CySRER<<index)) | CyTxRdy); | |
4410 | CY_UNLOCK(info, flags); | |
4411 | } else { | |
4412 | // Nothing to do! | |
4413 | } | |
4414 | ||
4415 | return; | |
4416 | } /* cy_start */ | |
4417 | ||
4418 | ||
4419 | static void | |
4420 | cy_flush_buffer(struct tty_struct *tty) | |
4421 | { | |
4422 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; | |
4423 | int card, channel, retval; | |
4424 | unsigned long flags; | |
4425 | ||
4426 | #ifdef CY_DEBUG_IO | |
4427 | printk("cyc:cy_flush_buffer ttyC%d\n", info->line); /* */ | |
4428 | #endif | |
4429 | ||
4430 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
4431 | return; | |
4432 | ||
4433 | card = info->card; | |
4434 | channel = (info->line) - (cy_card[card].first_line); | |
4435 | ||
4436 | CY_LOCK(info, flags); | |
4437 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
4438 | CY_UNLOCK(info, flags); | |
4439 | ||
4440 | if (IS_CYC_Z(cy_card[card])) { /* If it is a Z card, flush the on-board | |
4441 | buffers as well */ | |
4442 | CY_LOCK(info, flags); | |
4443 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_TX, 0L); | |
4444 | if (retval != 0) { | |
4445 | printk("cyc: flush_buffer retval on ttyC%d was %x\n", | |
4446 | info->line, retval); | |
4447 | } | |
4448 | CY_UNLOCK(info, flags); | |
4449 | } | |
4450 | tty_wakeup(tty); | |
4451 | wake_up_interruptible(&tty->write_wait); | |
4452 | } /* cy_flush_buffer */ | |
4453 | ||
4454 | ||
4455 | /* | |
4456 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
4457 | */ | |
4458 | static void | |
4459 | cy_hangup(struct tty_struct *tty) | |
4460 | { | |
4461 | struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; | |
4462 | ||
4463 | #ifdef CY_DEBUG_OTHER | |
4464 | printk("cyc:cy_hangup ttyC%d\n", info->line); /* */ | |
4465 | #endif | |
4466 | ||
4467 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) | |
4468 | return; | |
4469 | ||
4470 | cy_flush_buffer(tty); | |
4471 | shutdown(info); | |
4472 | info->event = 0; | |
4473 | info->count = 0; | |
4474 | #ifdef CY_DEBUG_COUNT | |
4475 | printk("cyc:cy_hangup (%d): setting count to 0\n", current->pid); | |
4476 | #endif | |
4477 | info->tty = NULL; | |
4478 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
4479 | wake_up_interruptible(&info->open_wait); | |
4480 | } /* cy_hangup */ | |
4481 | ||
4482 | ||
4483 | /* | |
4484 | * --------------------------------------------------------------------- | |
4485 | * cy_init() and friends | |
4486 | * | |
4487 | * cy_init() is called at boot-time to initialize the serial driver. | |
4488 | * --------------------------------------------------------------------- | |
4489 | */ | |
4490 | ||
4491 | /* initialize chips on Cyclom-Y card -- return number of valid | |
4492 | chips (which is number of ports/4) */ | |
4493 | static unsigned short __init | |
4494 | cyy_init_card(void __iomem *true_base_addr,int index) | |
4495 | { | |
4496 | unsigned int chip_number; | |
4497 | void __iomem *base_addr; | |
4498 | ||
4499 | cy_writeb(true_base_addr+(Cy_HwReset<<index), 0); | |
4500 | /* Cy_HwReset is 0x1400 */ | |
4501 | cy_writeb(true_base_addr+(Cy_ClrIntr<<index), 0); | |
4502 | /* Cy_ClrIntr is 0x1800 */ | |
4503 | udelay(500L); | |
4504 | ||
4505 | for(chip_number=0; chip_number<CyMAX_CHIPS_PER_CARD; chip_number++){ | |
4506 | base_addr = true_base_addr + (cy_chip_offset[chip_number]<<index); | |
4507 | mdelay(1); | |
4508 | if(cy_readb(base_addr+(CyCCR<<index)) != 0x00){ | |
4509 | /************* | |
4510 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
4511 | chip_number, (unsigned long)base_addr); | |
4512 | *************/ | |
4513 | return chip_number; | |
4514 | } | |
4515 | ||
4516 | cy_writeb(base_addr+(CyGFRCR<<index), 0); | |
4517 | udelay(10L); | |
4518 | ||
4519 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
4520 | cannot distinguish between references to chip 0 and a non- | |
4521 | existent chip 4. If the preceding clearing of the supposed | |
4522 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
4523 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
4524 | */ | |
4525 | if (chip_number == 4 | |
4526 | && cy_readb(true_base_addr | |
4527 | + (cy_chip_offset[0]<<index) | |
4528 | + (CyGFRCR<<index)) == 0){ | |
4529 | return chip_number; | |
4530 | } | |
4531 | ||
4532 | cy_writeb(base_addr+(CyCCR<<index), CyCHIP_RESET); | |
4533 | mdelay(1); | |
4534 | ||
4535 | if(cy_readb(base_addr+(CyGFRCR<<index)) == 0x00){ | |
4536 | /* | |
4537 | printk(" chip #%d at %#6lx is not responding ", | |
4538 | chip_number, (unsigned long)base_addr); | |
4539 | printk("(GFRCR stayed 0)\n", | |
4540 | */ | |
4541 | return chip_number; | |
4542 | } | |
4543 | if((0xf0 & (cy_readb(base_addr+(CyGFRCR<<index)))) != 0x40){ | |
4544 | /* | |
4545 | printk(" chip #%d at %#6lx is not valid (GFRCR == %#2x)\n", | |
4546 | chip_number, (unsigned long)base_addr, | |
4547 | base_addr[CyGFRCR<<index]); | |
4548 | */ | |
4549 | return chip_number; | |
4550 | } | |
4551 | cy_writeb(base_addr+(CyGCR<<index), CyCH0_SERIAL); | |
4552 | if (cy_readb(base_addr+(CyGFRCR<<index)) >= CD1400_REV_J){ | |
4553 | /* It is a CD1400 rev. J or later */ | |
4554 | /* Impossible to reach 5ms with this chip. | |
4555 | Changed to 2ms instead (f = 500 Hz). */ | |
4556 | cy_writeb(base_addr+(CyPPR<<index), CyCLOCK_60_2MS); | |
4557 | } else { | |
4558 | /* f = 200 Hz */ | |
4559 | cy_writeb(base_addr+(CyPPR<<index), CyCLOCK_25_5MS); | |
4560 | } | |
4561 | ||
4562 | /* | |
4563 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
4564 | chip_number, (unsigned long)base_addr, | |
4565 | cy_readb(base_addr+(CyGFRCR<<index))); | |
4566 | */ | |
4567 | } | |
4568 | return chip_number; | |
4569 | } /* cyy_init_card */ | |
4570 | ||
4571 | /* | |
4572 | * --------------------------------------------------------------------- | |
4573 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
4574 | * sets global variables and return the number of ISA boards found. | |
4575 | * --------------------------------------------------------------------- | |
4576 | */ | |
4577 | static int __init | |
4578 | cy_detect_isa(void) | |
4579 | { | |
4580 | #ifdef CONFIG_ISA | |
4581 | unsigned short cy_isa_irq,nboard; | |
4582 | void __iomem *cy_isa_address; | |
4583 | unsigned short i,j,cy_isa_nchan; | |
4584 | #ifdef MODULE | |
4585 | int isparam = 0; | |
4586 | #endif | |
4587 | ||
4588 | nboard = 0; | |
4589 | ||
4590 | #ifdef MODULE | |
4591 | /* Check for module parameters */ | |
4592 | for(i = 0 ; i < NR_CARDS; i++) { | |
4593 | if (maddr[i] || i) { | |
4594 | isparam = 1; | |
4595 | cy_isa_addresses[i] = maddr[i]; | |
4596 | } | |
4597 | if (!maddr[i]) | |
4598 | break; | |
4599 | } | |
4600 | #endif | |
4601 | ||
4602 | /* scan the address table probing for Cyclom-Y/ISA boards */ | |
4603 | for (i = 0 ; i < NR_ISA_ADDRS ; i++) { | |
4604 | unsigned int isa_address = cy_isa_addresses[i]; | |
4605 | if (isa_address == 0x0000) { | |
4606 | return(nboard); | |
4607 | } | |
4608 | ||
4609 | /* probe for CD1400... */ | |
4610 | cy_isa_address = ioremap(isa_address, CyISA_Ywin); | |
4611 | cy_isa_nchan = CyPORTS_PER_CHIP * | |
4612 | cyy_init_card(cy_isa_address,0); | |
4613 | if (cy_isa_nchan == 0) { | |
4614 | continue; | |
4615 | } | |
4616 | ||
4617 | #ifdef MODULE | |
4618 | if (isparam && irq[i]) | |
4619 | cy_isa_irq = irq[i]; | |
4620 | else | |
4621 | #endif | |
4622 | /* find out the board's irq by probing */ | |
4623 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
4624 | if (cy_isa_irq == 0) { | |
4625 | printk("Cyclom-Y/ISA found at 0x%lx ", | |
4626 | (unsigned long) cy_isa_address); | |
4627 | printk("but the IRQ could not be detected.\n"); | |
4628 | continue; | |
4629 | } | |
4630 | ||
4631 | if((cy_next_channel+cy_isa_nchan) > NR_PORTS) { | |
4632 | printk("Cyclom-Y/ISA found at 0x%lx ", | |
4633 | (unsigned long) cy_isa_address); | |
4634 | printk("but no more channels are available.\n"); | |
4635 | printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); | |
4636 | return(nboard); | |
4637 | } | |
4638 | /* fill the next cy_card structure available */ | |
4639 | for (j = 0 ; j < NR_CARDS ; j++) { | |
4640 | if (cy_card[j].base_addr == 0) break; | |
4641 | } | |
4642 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
4643 | printk("Cyclom-Y/ISA found at 0x%lx ", | |
4644 | (unsigned long) cy_isa_address); | |
4645 | printk("but no more cards can be used .\n"); | |
4646 | printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); | |
4647 | return(nboard); | |
4648 | } | |
4649 | ||
4650 | /* allocate IRQ */ | |
4651 | if(request_irq(cy_isa_irq, cyy_interrupt, | |
4652 | SA_INTERRUPT, "Cyclom-Y", &cy_card[j])) | |
4653 | { | |
4654 | printk("Cyclom-Y/ISA found at 0x%lx ", | |
4655 | (unsigned long) cy_isa_address); | |
4656 | printk("but could not allocate IRQ#%d.\n", | |
4657 | cy_isa_irq); | |
4658 | return(nboard); | |
4659 | } | |
4660 | ||
4661 | /* set cy_card */ | |
4662 | cy_card[j].base_addr = cy_isa_address; | |
4663 | cy_card[j].ctl_addr = NULL; | |
4664 | cy_card[j].irq = (int) cy_isa_irq; | |
4665 | cy_card[j].bus_index = 0; | |
4666 | cy_card[j].first_line = cy_next_channel; | |
4667 | cy_card[j].num_chips = cy_isa_nchan/4; | |
4668 | nboard++; | |
4669 | ||
4670 | /* print message */ | |
4671 | printk("Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d, ", | |
4672 | j+1, (unsigned long) cy_isa_address, | |
4673 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
4674 | cy_isa_irq); | |
4675 | printk("%d channels starting from port %d.\n", | |
4676 | cy_isa_nchan, cy_next_channel); | |
4677 | cy_next_channel += cy_isa_nchan; | |
4678 | } | |
4679 | return(nboard); | |
4680 | #else | |
4681 | return(0); | |
4682 | #endif /* CONFIG_ISA */ | |
4683 | } /* cy_detect_isa */ | |
4684 | ||
4685 | static void | |
4686 | plx_init(void __iomem *addr, uclong initctl) | |
4687 | { | |
4688 | /* Reset PLX */ | |
4689 | cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x40000000); | |
4690 | udelay(100L); | |
4691 | cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x40000000); | |
4692 | ||
4693 | /* Reload Config. Registers from EEPROM */ | |
4694 | cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x20000000); | |
4695 | udelay(100L); | |
4696 | cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x20000000); | |
4697 | } | |
4698 | ||
4699 | /* | |
4700 | * --------------------------------------------------------------------- | |
4701 | * cy_detect_pci() - Test PCI bus presence and Cyclom-Ye/PCI. | |
4702 | * sets global variables and return the number of PCI boards found. | |
4703 | * --------------------------------------------------------------------- | |
4704 | */ | |
4705 | static int __init | |
4706 | cy_detect_pci(void) | |
4707 | { | |
4708 | #ifdef CONFIG_PCI | |
4709 | ||
4710 | struct pci_dev *pdev = NULL; | |
4711 | unsigned char cyy_rev_id; | |
4712 | unsigned char cy_pci_irq = 0; | |
4713 | uclong cy_pci_phys0, cy_pci_phys2; | |
4714 | void __iomem *cy_pci_addr0, *cy_pci_addr2; | |
4715 | unsigned short i,j,cy_pci_nchan, plx_ver; | |
4716 | unsigned short device_id,dev_index = 0; | |
4717 | uclong mailbox; | |
4718 | uclong ZeIndex = 0; | |
4719 | void __iomem *Ze_addr0[NR_CARDS], *Ze_addr2[NR_CARDS]; | |
4720 | uclong Ze_phys0[NR_CARDS], Ze_phys2[NR_CARDS]; | |
4721 | unsigned char Ze_irq[NR_CARDS]; | |
4722 | struct pci_dev *Ze_pdev[NR_CARDS]; | |
4723 | ||
4724 | for (i = 0; i < NR_CARDS; i++) { | |
4725 | /* look for a Cyclades card by vendor and device id */ | |
4726 | while((device_id = cy_pci_dev_id[dev_index]) != 0) { | |
4727 | if((pdev = pci_get_device(PCI_VENDOR_ID_CYCLADES, | |
4728 | device_id, pdev)) == NULL) { | |
4729 | dev_index++; /* try next device id */ | |
4730 | } else { | |
4731 | break; /* found a board */ | |
4732 | } | |
4733 | } | |
4734 | ||
4735 | if (device_id == 0) | |
4736 | break; | |
4737 | ||
4738 | if (pci_enable_device(pdev)) | |
4739 | continue; | |
4740 | ||
4741 | /* read PCI configuration area */ | |
4742 | cy_pci_irq = pdev->irq; | |
4743 | cy_pci_phys0 = pci_resource_start(pdev, 0); | |
4744 | cy_pci_phys2 = pci_resource_start(pdev, 2); | |
4745 | pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id); | |
4746 | ||
4747 | device_id &= ~PCI_DEVICE_ID_MASK; | |
4748 | ||
4749 | if ((device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) | |
4750 | || (device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi)){ | |
4751 | #ifdef CY_PCI_DEBUG | |
4752 | printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ", | |
4753 | pdev->bus->number, pdev->devfn); | |
4754 | printk("rev_id=%d) IRQ%d\n", | |
4755 | cyy_rev_id, (int)cy_pci_irq); | |
4756 | printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n", | |
4757 | (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); | |
4758 | #endif | |
4759 | ||
4760 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
4761 | printk(" Warning: PCI I/O bit incorrectly set. " | |
4762 | "Ignoring it...\n"); | |
4763 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
4764 | } | |
4765 | ||
4766 | /* Although we don't use this I/O region, we should | |
4767 | request it from the kernel anyway, to avoid problems | |
4768 | with other drivers accessing it. */ | |
4769 | if (pci_request_regions(pdev, "Cyclom-Y") != 0) { | |
4770 | printk(KERN_ERR "cyclades: failed to reserve PCI resources\n"); | |
4771 | continue; | |
4772 | } | |
4773 | ||
4774 | #if defined(__alpha__) | |
4775 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
4776 | printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ", | |
4777 | pdev->bus->number, pdev->devfn); | |
4778 | printk("rev_id=%d) IRQ%d\n", | |
4779 | cyy_rev_id, (int)cy_pci_irq); | |
4780 | printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n", | |
4781 | (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); | |
4782 | printk("Cyclom-Y/PCI not supported for low addresses in " | |
4783 | "Alpha systems.\n"); | |
4784 | i--; | |
4785 | continue; | |
4786 | } | |
4787 | #endif | |
4788 | cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Yctl); | |
4789 | cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Ywin); | |
4790 | ||
4791 | #ifdef CY_PCI_DEBUG | |
4792 | printk("Cyclom-Y/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n", | |
4793 | (u_long)cy_pci_addr2, (u_long)cy_pci_addr0); | |
4794 | #endif | |
4795 | cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP * | |
4796 | cyy_init_card(cy_pci_addr2, 1)); | |
4797 | if(cy_pci_nchan == 0) { | |
4798 | printk("Cyclom-Y PCI host card with "); | |
4799 | printk("no Serial-Modules at 0x%lx.\n", | |
4800 | (ulong) cy_pci_phys2); | |
4801 | i--; | |
4802 | continue; | |
4803 | } | |
4804 | if((cy_next_channel+cy_pci_nchan) > NR_PORTS) { | |
4805 | printk("Cyclom-Y/PCI found at 0x%lx ", | |
4806 | (ulong) cy_pci_phys2); | |
4807 | printk("but no channels are available.\n"); | |
4808 | printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); | |
4809 | return(i); | |
4810 | } | |
4811 | /* fill the next cy_card structure available */ | |
4812 | for (j = 0 ; j < NR_CARDS ; j++) { | |
4813 | if (cy_card[j].base_addr == 0) break; | |
4814 | } | |
4815 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
4816 | printk("Cyclom-Y/PCI found at 0x%lx ", | |
4817 | (ulong) cy_pci_phys2); | |
4818 | printk("but no more cards can be used.\n"); | |
4819 | printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); | |
4820 | return(i); | |
4821 | } | |
4822 | ||
4823 | /* allocate IRQ */ | |
4824 | if(request_irq(cy_pci_irq, cyy_interrupt, | |
4825 | SA_SHIRQ, "Cyclom-Y", &cy_card[j])) | |
4826 | { | |
4827 | printk("Cyclom-Y/PCI found at 0x%lx ", | |
4828 | (ulong) cy_pci_phys2); | |
4829 | printk("but could not allocate IRQ%d.\n", | |
4830 | cy_pci_irq); | |
4831 | return(i); | |
4832 | } | |
4833 | ||
4834 | /* set cy_card */ | |
4835 | cy_card[j].base_phys = (ulong)cy_pci_phys2; | |
4836 | cy_card[j].ctl_phys = (ulong)cy_pci_phys0; | |
4837 | cy_card[j].base_addr = cy_pci_addr2; | |
4838 | cy_card[j].ctl_addr = cy_pci_addr0; | |
4839 | cy_card[j].irq = (int) cy_pci_irq; | |
4840 | cy_card[j].bus_index = 1; | |
4841 | cy_card[j].first_line = cy_next_channel; | |
4842 | cy_card[j].num_chips = cy_pci_nchan/4; | |
4843 | cy_card[j].pdev = pdev; | |
4844 | ||
4845 | /* enable interrupts in the PCI interface */ | |
4846 | plx_ver = cy_readb(cy_pci_addr2 + CyPLX_VER) & 0x0f; | |
4847 | switch (plx_ver) { | |
4848 | case PLX_9050: | |
4849 | ||
4850 | cy_writeb(cy_pci_addr0+0x4c, 0x43); | |
4851 | break; | |
4852 | ||
4853 | case PLX_9060: | |
4854 | case PLX_9080: | |
4855 | default: /* Old boards, use PLX_9060 */ | |
4856 | ||
4857 | plx_init(cy_pci_addr0, 0x6c); | |
4858 | /* For some yet unknown reason, once the PLX9060 reloads | |
4859 | the EEPROM, the IRQ is lost and, thus, we have to | |
4860 | re-write it to the PCI config. registers. | |
4861 | This will remain here until we find a permanent fix. */ | |
4862 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); | |
4863 | ||
4864 | cy_writew(cy_pci_addr0+0x68, | |
4865 | cy_readw(cy_pci_addr0+0x68)|0x0900); | |
4866 | break; | |
4867 | } | |
4868 | ||
4869 | /* print message */ | |
4870 | printk("Cyclom-Y/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", | |
4871 | j+1, | |
4872 | (ulong)cy_pci_phys2, | |
4873 | (ulong)(cy_pci_phys2 + CyPCI_Ywin - 1), | |
4874 | (int)cy_pci_irq); | |
4875 | printk("%d channels starting from port %d.\n", | |
4876 | cy_pci_nchan, cy_next_channel); | |
4877 | ||
4878 | cy_next_channel += cy_pci_nchan; | |
4879 | }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo){ | |
4880 | /* print message */ | |
4881 | printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ", | |
4882 | pdev->bus->number, pdev->devfn); | |
4883 | printk("rev_id=%d) IRQ%d\n", | |
4884 | cyy_rev_id, (int)cy_pci_irq); | |
4885 | printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n", | |
4886 | (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); | |
4887 | printk("Cyclades-Z/PCI not supported for low addresses\n"); | |
4888 | break; | |
4889 | }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi){ | |
4890 | #ifdef CY_PCI_DEBUG | |
4891 | printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ", | |
4892 | pdev->bus->number, pdev->devfn); | |
4893 | printk("rev_id=%d) IRQ%d\n", | |
4894 | cyy_rev_id, (int)cy_pci_irq); | |
4895 | printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n", | |
4896 | (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); | |
4897 | #endif | |
4898 | cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Zctl); | |
4899 | ||
4900 | /* Disable interrupts on the PLX before resetting it */ | |
4901 | cy_writew(cy_pci_addr0+0x68, | |
4902 | cy_readw(cy_pci_addr0+0x68) & ~0x0900); | |
4903 | ||
4904 | plx_init(cy_pci_addr0, 0x6c); | |
4905 | /* For some yet unknown reason, once the PLX9060 reloads | |
4906 | the EEPROM, the IRQ is lost and, thus, we have to | |
4907 | re-write it to the PCI config. registers. | |
4908 | This will remain here until we find a permanent fix. */ | |
4909 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); | |
4910 | ||
4911 | mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *) | |
4912 | cy_pci_addr0)->mail_box_0); | |
4913 | ||
4914 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
4915 | printk(" Warning: PCI I/O bit incorrectly set. " | |
4916 | "Ignoring it...\n"); | |
4917 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
4918 | } | |
4919 | ||
4920 | /* Although we don't use this I/O region, we should | |
4921 | request it from the kernel anyway, to avoid problems | |
4922 | with other drivers accessing it. */ | |
4923 | if (pci_request_regions(pdev, "Cyclades-Z") != 0) { | |
4924 | printk(KERN_ERR "cyclades: failed to reserve PCI resources\n"); | |
4925 | continue; | |
4926 | } | |
4927 | ||
4928 | if (mailbox == ZE_V1) { | |
4929 | cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Ze_win); | |
4930 | if (ZeIndex == NR_CARDS) { | |
4931 | printk("Cyclades-Ze/PCI found at 0x%lx ", | |
4932 | (ulong)cy_pci_phys2); | |
4933 | printk("but no more cards can be used.\n"); | |
4934 | printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); | |
4935 | } else { | |
4936 | Ze_phys0[ZeIndex] = cy_pci_phys0; | |
4937 | Ze_phys2[ZeIndex] = cy_pci_phys2; | |
4938 | Ze_addr0[ZeIndex] = cy_pci_addr0; | |
4939 | Ze_addr2[ZeIndex] = cy_pci_addr2; | |
4940 | Ze_irq[ZeIndex] = cy_pci_irq; | |
4941 | Ze_pdev[ZeIndex] = pdev; | |
4942 | ZeIndex++; | |
4943 | } | |
4944 | i--; | |
4945 | continue; | |
4946 | } else { | |
4947 | cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Zwin); | |
4948 | } | |
4949 | ||
4950 | #ifdef CY_PCI_DEBUG | |
4951 | printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n", | |
4952 | (ulong)cy_pci_addr2, (ulong)cy_pci_addr0); | |
4953 | if (mailbox == ZO_V1) { | |
4954 | cy_writel(&((struct RUNTIME_9060 *) | |
4955 | (cy_pci_addr0))->loc_addr_base, WIN_CREG); | |
4956 | PAUSE | |
4957 | printk("Cyclades-8Zo/PCI: FPGA id %lx, ver %lx\n", | |
4958 | (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *) | |
4959 | (cy_pci_addr2))->fpga_id)), | |
4960 | (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *) | |
4961 | (cy_pci_addr2))->fpga_version))); | |
4962 | cy_writel(&((struct RUNTIME_9060 *) | |
4963 | (cy_pci_addr0))->loc_addr_base, WIN_RAM); | |
4964 | } else { | |
4965 | printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n"); | |
4966 | } | |
4967 | #endif | |
4968 | /* The following clears the firmware id word. This ensures | |
4969 | that the driver will not attempt to talk to the board | |
4970 | until it has been properly initialized. | |
4971 | */ | |
4972 | PAUSE | |
4973 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
4974 | cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L); | |
4975 | ||
4976 | /* This must be a Cyclades-8Zo/PCI. The extendable | |
4977 | version will have a different device_id and will | |
4978 | be allocated its maximum number of ports. */ | |
4979 | cy_pci_nchan = 8; | |
4980 | ||
4981 | if((cy_next_channel+cy_pci_nchan) > NR_PORTS) { | |
4982 | printk("Cyclades-8Zo/PCI found at 0x%lx ", | |
4983 | (ulong)cy_pci_phys2); | |
4984 | printk("but no channels are available.\n"); | |
4985 | printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); | |
4986 | return(i); | |
4987 | } | |
4988 | ||
4989 | /* fill the next cy_card structure available */ | |
4990 | for (j = 0 ; j < NR_CARDS ; j++) { | |
4991 | if (cy_card[j].base_addr == 0) break; | |
4992 | } | |
4993 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
4994 | printk("Cyclades-8Zo/PCI found at 0x%lx ", | |
4995 | (ulong)cy_pci_phys2); | |
4996 | printk("but no more cards can be used.\n"); | |
4997 | printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); | |
4998 | return(i); | |
4999 | } | |
5000 | ||
5001 | #ifdef CONFIG_CYZ_INTR | |
5002 | /* allocate IRQ only if board has an IRQ */ | |
5003 | if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) { | |
5004 | if(request_irq(cy_pci_irq, cyz_interrupt, | |
5005 | SA_SHIRQ, "Cyclades-Z", &cy_card[j])) | |
5006 | { | |
5007 | printk("Cyclom-8Zo/PCI found at 0x%lx ", | |
5008 | (ulong) cy_pci_phys2); | |
5009 | printk("but could not allocate IRQ%d.\n", | |
5010 | cy_pci_irq); | |
5011 | return(i); | |
5012 | } | |
5013 | } | |
5014 | #endif /* CONFIG_CYZ_INTR */ | |
5015 | ||
5016 | ||
5017 | /* set cy_card */ | |
5018 | cy_card[j].base_phys = cy_pci_phys2; | |
5019 | cy_card[j].ctl_phys = cy_pci_phys0; | |
5020 | cy_card[j].base_addr = cy_pci_addr2; | |
5021 | cy_card[j].ctl_addr = cy_pci_addr0; | |
5022 | cy_card[j].irq = (int) cy_pci_irq; | |
5023 | cy_card[j].bus_index = 1; | |
5024 | cy_card[j].first_line = cy_next_channel; | |
5025 | cy_card[j].num_chips = -1; | |
5026 | cy_card[j].pdev = pdev; | |
5027 | ||
5028 | /* print message */ | |
5029 | #ifdef CONFIG_CYZ_INTR | |
5030 | /* don't report IRQ if board is no IRQ */ | |
5031 | if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) | |
5032 | printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", | |
5033 | j+1,(ulong)cy_pci_phys2, | |
5034 | (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1), | |
5035 | (int)cy_pci_irq); | |
5036 | else | |
5037 | #endif /* CONFIG_CYZ_INTR */ | |
5038 | printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, ", | |
5039 | j+1,(ulong)cy_pci_phys2, | |
5040 | (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1)); | |
5041 | ||
5042 | printk("%d channels starting from port %d.\n", | |
5043 | cy_pci_nchan,cy_next_channel); | |
5044 | cy_next_channel += cy_pci_nchan; | |
5045 | } | |
5046 | } | |
5047 | ||
5048 | for (; ZeIndex != 0 && i < NR_CARDS; i++) { | |
5049 | cy_pci_phys0 = Ze_phys0[0]; | |
5050 | cy_pci_phys2 = Ze_phys2[0]; | |
5051 | cy_pci_addr0 = Ze_addr0[0]; | |
5052 | cy_pci_addr2 = Ze_addr2[0]; | |
5053 | cy_pci_irq = Ze_irq[0]; | |
5054 | pdev = Ze_pdev[0]; | |
5055 | for (j = 0 ; j < ZeIndex-1 ; j++) { | |
5056 | Ze_phys0[j] = Ze_phys0[j+1]; | |
5057 | Ze_phys2[j] = Ze_phys2[j+1]; | |
5058 | Ze_addr0[j] = Ze_addr0[j+1]; | |
5059 | Ze_addr2[j] = Ze_addr2[j+1]; | |
5060 | Ze_irq[j] = Ze_irq[j+1]; | |
5061 | Ze_pdev[j] = Ze_pdev[j+1]; | |
5062 | } | |
5063 | ZeIndex--; | |
5064 | mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *) | |
5065 | cy_pci_addr0)->mail_box_0); | |
5066 | #ifdef CY_PCI_DEBUG | |
5067 | printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n", | |
5068 | (ulong)cy_pci_addr2, (ulong)cy_pci_addr0); | |
5069 | printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n"); | |
5070 | #endif | |
5071 | PAUSE | |
5072 | /* This must be the new Cyclades-Ze/PCI. */ | |
5073 | cy_pci_nchan = ZE_V1_NPORTS; | |
5074 | ||
5075 | if((cy_next_channel+cy_pci_nchan) > NR_PORTS) { | |
5076 | printk("Cyclades-Ze/PCI found at 0x%lx ", | |
5077 | (ulong)cy_pci_phys2); | |
5078 | printk("but no channels are available.\n"); | |
5079 | printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); | |
5080 | return(i); | |
5081 | } | |
5082 | ||
5083 | /* fill the next cy_card structure available */ | |
5084 | for (j = 0 ; j < NR_CARDS ; j++) { | |
5085 | if (cy_card[j].base_addr == 0) break; | |
5086 | } | |
5087 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
5088 | printk("Cyclades-Ze/PCI found at 0x%lx ", | |
5089 | (ulong)cy_pci_phys2); | |
5090 | printk("but no more cards can be used.\n"); | |
5091 | printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); | |
5092 | return(i); | |
5093 | } | |
5094 | ||
5095 | #ifdef CONFIG_CYZ_INTR | |
5096 | /* allocate IRQ only if board has an IRQ */ | |
5097 | if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) { | |
5098 | if(request_irq(cy_pci_irq, cyz_interrupt, | |
5099 | SA_SHIRQ, "Cyclades-Z", &cy_card[j])) | |
5100 | { | |
5101 | printk("Cyclom-Ze/PCI found at 0x%lx ", | |
5102 | (ulong) cy_pci_phys2); | |
5103 | printk("but could not allocate IRQ%d.\n", | |
5104 | cy_pci_irq); | |
5105 | return(i); | |
5106 | } | |
5107 | } | |
5108 | #endif /* CONFIG_CYZ_INTR */ | |
5109 | ||
5110 | /* set cy_card */ | |
5111 | cy_card[j].base_phys = cy_pci_phys2; | |
5112 | cy_card[j].ctl_phys = cy_pci_phys0; | |
5113 | cy_card[j].base_addr = cy_pci_addr2; | |
5114 | cy_card[j].ctl_addr = cy_pci_addr0; | |
5115 | cy_card[j].irq = (int) cy_pci_irq; | |
5116 | cy_card[j].bus_index = 1; | |
5117 | cy_card[j].first_line = cy_next_channel; | |
5118 | cy_card[j].num_chips = -1; | |
5119 | cy_card[j].pdev = pdev; | |
5120 | ||
5121 | /* print message */ | |
5122 | #ifdef CONFIG_CYZ_INTR | |
5123 | /* don't report IRQ if board is no IRQ */ | |
5124 | if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) | |
5125 | printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", | |
5126 | j+1,(ulong)cy_pci_phys2, | |
5127 | (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1), | |
5128 | (int)cy_pci_irq); | |
5129 | else | |
5130 | #endif /* CONFIG_CYZ_INTR */ | |
5131 | printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, ", | |
5132 | j+1,(ulong)cy_pci_phys2, | |
5133 | (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1)); | |
5134 | ||
5135 | printk("%d channels starting from port %d.\n", | |
5136 | cy_pci_nchan,cy_next_channel); | |
5137 | cy_next_channel += cy_pci_nchan; | |
5138 | } | |
5139 | if (ZeIndex != 0) { | |
5140 | printk("Cyclades-Ze/PCI found at 0x%x ", | |
5141 | (unsigned int) Ze_phys2[0]); | |
5142 | printk("but no more cards can be used.\n"); | |
5143 | printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); | |
5144 | } | |
5145 | return(i); | |
5146 | #else | |
5147 | return(0); | |
5148 | #endif /* ifdef CONFIG_PCI */ | |
5149 | } /* cy_detect_pci */ | |
5150 | ||
5151 | ||
5152 | /* | |
5153 | * This routine prints out the appropriate serial driver version number | |
5154 | * and identifies which options were configured into this driver. | |
5155 | */ | |
5156 | static inline void | |
5157 | show_version(void) | |
5158 | { | |
5159 | char *rcsvers, *rcsdate, *tmp; | |
5160 | rcsvers = strchr(rcsid, ' '); rcsvers++; | |
5161 | tmp = strchr(rcsvers, ' '); *tmp++ = '\0'; | |
5162 | rcsdate = strchr(tmp, ' '); rcsdate++; | |
5163 | tmp = strrchr(rcsdate, ' '); *tmp = '\0'; | |
5164 | printk("Cyclades driver %s %s\n", | |
5165 | rcsvers, rcsdate); | |
5166 | printk(" built %s %s\n", | |
5167 | __DATE__, __TIME__); | |
5168 | } /* show_version */ | |
5169 | ||
5170 | static int | |
5171 | cyclades_get_proc_info(char *buf, char **start, off_t offset, int length, | |
5172 | int *eof, void *data) | |
5173 | { | |
5174 | struct cyclades_port *info; | |
5175 | int i; | |
5176 | int len=0; | |
5177 | off_t begin=0; | |
5178 | off_t pos=0; | |
5179 | int size; | |
5180 | __u32 cur_jifs = jiffies; | |
5181 | ||
5182 | size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn IdleIn Overruns Ldisc\n"); | |
5183 | ||
5184 | pos += size; | |
5185 | len += size; | |
5186 | ||
5187 | /* Output one line for each known port */ | |
5188 | for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) { | |
5189 | info = &cy_port[i]; | |
5190 | ||
5191 | if (info->count) | |
5192 | size = sprintf(buf+len, | |
5193 | "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n", | |
5194 | info->line, | |
5195 | JIFFIES_DIFF(info->idle_stats.in_use, cur_jifs) / HZ, | |
5196 | info->idle_stats.xmit_bytes, | |
5197 | JIFFIES_DIFF(info->idle_stats.xmit_idle, cur_jifs) / HZ, | |
5198 | info->idle_stats.recv_bytes, | |
5199 | JIFFIES_DIFF(info->idle_stats.recv_idle, cur_jifs) / HZ, | |
5200 | info->idle_stats.overruns, | |
5201 | (long) info->tty->ldisc.num); | |
5202 | else | |
5203 | size = sprintf(buf+len, | |
5204 | "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n", | |
5205 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
5206 | len += size; | |
5207 | pos = begin + len; | |
5208 | ||
5209 | if (pos < offset) { | |
5210 | len = 0; | |
5211 | begin = pos; | |
5212 | } | |
5213 | if (pos > offset + length) | |
5214 | goto done; | |
5215 | } | |
5216 | *eof = 1; | |
5217 | done: | |
5218 | *start = buf + (offset - begin); /* Start of wanted data */ | |
5219 | len -= (offset - begin); /* Start slop */ | |
5220 | if (len > length) | |
5221 | len = length; /* Ending slop */ | |
5222 | if (len < 0) | |
5223 | len = 0; | |
5224 | return len; | |
5225 | } | |
5226 | ||
5227 | /* The serial driver boot-time initialization code! | |
5228 | Hardware I/O ports are mapped to character special devices on a | |
5229 | first found, first allocated manner. That is, this code searches | |
5230 | for Cyclom cards in the system. As each is found, it is probed | |
5231 | to discover how many chips (and thus how many ports) are present. | |
5232 | These ports are mapped to the tty ports 32 and upward in monotonic | |
5233 | fashion. If an 8-port card is replaced with a 16-port card, the | |
5234 | port mapping on a following card will shift. | |
5235 | ||
5236 | This approach is different from what is used in the other serial | |
5237 | device driver because the Cyclom is more properly a multiplexer, | |
5238 | not just an aggregation of serial ports on one card. | |
5239 | ||
5240 | If there are more cards with more ports than have been | |
5241 | statically allocated above, a warning is printed and the | |
5242 | extra ports are ignored. | |
5243 | */ | |
5244 | ||
5245 | static struct tty_operations cy_ops = { | |
5246 | .open = cy_open, | |
5247 | .close = cy_close, | |
5248 | .write = cy_write, | |
5249 | .put_char = cy_put_char, | |
5250 | .flush_chars = cy_flush_chars, | |
5251 | .write_room = cy_write_room, | |
5252 | .chars_in_buffer = cy_chars_in_buffer, | |
5253 | .flush_buffer = cy_flush_buffer, | |
5254 | .ioctl = cy_ioctl, | |
5255 | .throttle = cy_throttle, | |
5256 | .unthrottle = cy_unthrottle, | |
5257 | .set_termios = cy_set_termios, | |
5258 | .stop = cy_stop, | |
5259 | .start = cy_start, | |
5260 | .hangup = cy_hangup, | |
5261 | .break_ctl = cy_break, | |
5262 | .wait_until_sent = cy_wait_until_sent, | |
5263 | .read_proc = cyclades_get_proc_info, | |
5264 | .tiocmget = cy_tiocmget, | |
5265 | .tiocmset = cy_tiocmset, | |
5266 | }; | |
5267 | ||
5268 | static int __init | |
5269 | cy_init(void) | |
5270 | { | |
5271 | struct cyclades_port *info; | |
5272 | struct cyclades_card *cinfo; | |
5273 | int number_z_boards = 0; | |
5274 | int board,port,i,index; | |
5275 | unsigned long mailbox; | |
5276 | unsigned short chip_number; | |
5277 | int nports; | |
5278 | ||
5279 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
5280 | if (!cy_serial_driver) | |
5281 | return -ENOMEM; | |
5282 | show_version(); | |
5283 | ||
5284 | /* Initialize the tty_driver structure */ | |
5285 | ||
5286 | cy_serial_driver->owner = THIS_MODULE; | |
5287 | cy_serial_driver->driver_name = "cyclades"; | |
5288 | cy_serial_driver->name = "ttyC"; | |
5289 | cy_serial_driver->devfs_name = "tts/C"; | |
5290 | cy_serial_driver->major = CYCLADES_MAJOR; | |
5291 | cy_serial_driver->minor_start = 0; | |
5292 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
5293 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
5294 | cy_serial_driver->init_termios = tty_std_termios; | |
5295 | cy_serial_driver->init_termios.c_cflag = | |
5296 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
5297 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW; | |
5298 | tty_set_operations(cy_serial_driver, &cy_ops); | |
5299 | ||
5300 | if (tty_register_driver(cy_serial_driver)) | |
5301 | panic("Couldn't register Cyclades serial driver\n"); | |
5302 | ||
5303 | for (i = 0; i < NR_CARDS; i++) { | |
5304 | /* base_addr=0 indicates board not found */ | |
5305 | cy_card[i].base_addr = NULL; | |
5306 | } | |
5307 | ||
5308 | /* the code below is responsible to find the boards. Each different | |
5309 | type of board has its own detection routine. If a board is found, | |
5310 | the next cy_card structure available is set by the detection | |
5311 | routine. These functions are responsible for checking the | |
5312 | availability of cy_card and cy_port data structures and updating | |
5313 | the cy_next_channel. */ | |
5314 | ||
5315 | /* look for isa boards */ | |
5316 | cy_isa_nboard = cy_detect_isa(); | |
5317 | ||
5318 | /* look for pci boards */ | |
5319 | cy_pci_nboard = cy_detect_pci(); | |
5320 | ||
5321 | cy_nboard = cy_isa_nboard + cy_pci_nboard; | |
5322 | ||
5323 | /* invalidate remaining cy_card structures */ | |
5324 | for (i = 0 ; i < NR_CARDS ; i++) { | |
5325 | if (cy_card[i].base_addr == 0) { | |
5326 | cy_card[i].first_line = -1; | |
5327 | cy_card[i].ctl_addr = NULL; | |
5328 | cy_card[i].irq = 0; | |
5329 | cy_card[i].bus_index = 0; | |
5330 | cy_card[i].first_line = 0; | |
5331 | cy_card[i].num_chips = 0; | |
5332 | } | |
5333 | } | |
5334 | /* invalidate remaining cy_port structures */ | |
5335 | for (i = cy_next_channel ; i < NR_PORTS ; i++) { | |
5336 | cy_port[i].line = -1; | |
5337 | cy_port[i].magic = -1; | |
5338 | } | |
5339 | ||
5340 | /* initialize per-port data structures for each valid board found */ | |
5341 | for (board = 0 ; board < cy_nboard ; board++) { | |
5342 | cinfo = &cy_card[board]; | |
5343 | if (cinfo->num_chips == -1) { /* Cyclades-Z */ | |
5344 | number_z_boards++; | |
5345 | mailbox = cy_readl(&((struct RUNTIME_9060 __iomem *) | |
5346 | cy_card[board].ctl_addr)->mail_box_0); | |
5347 | nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8; | |
5348 | cinfo->intr_enabled = 0; | |
5349 | cinfo->nports = 0; /* Will be correctly set later, after | |
5350 | Z FW is loaded */ | |
5351 | spin_lock_init(&cinfo->card_lock); | |
5352 | for (port = cinfo->first_line ; | |
5353 | port < cinfo->first_line + nports; | |
5354 | port++) | |
5355 | { | |
5356 | info = &cy_port[port]; | |
5357 | info->magic = CYCLADES_MAGIC; | |
5358 | info->type = PORT_STARTECH; | |
5359 | info->card = board; | |
5360 | info->line = port; | |
5361 | info->chip_rev = 0; | |
5362 | info->flags = STD_COM_FLAGS; | |
5363 | info->tty = NULL; | |
5364 | if (mailbox == ZO_V1) | |
5365 | info->xmit_fifo_size = CYZ_FIFO_SIZE; | |
5366 | else | |
5367 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; | |
5368 | info->cor1 = 0; | |
5369 | info->cor2 = 0; | |
5370 | info->cor3 = 0; | |
5371 | info->cor4 = 0; | |
5372 | info->cor5 = 0; | |
5373 | info->tbpr = 0; | |
5374 | info->tco = 0; | |
5375 | info->rbpr = 0; | |
5376 | info->rco = 0; | |
5377 | info->custom_divisor = 0; | |
5378 | info->close_delay = 5*HZ/10; | |
5379 | info->closing_wait = CLOSING_WAIT_DELAY; | |
5380 | info->icount.cts = info->icount.dsr = | |
5381 | info->icount.rng = info->icount.dcd = 0; | |
5382 | info->icount.rx = info->icount.tx = 0; | |
5383 | info->icount.frame = info->icount.parity = 0; | |
5384 | info->icount.overrun = info->icount.brk = 0; | |
5385 | info->x_char = 0; | |
5386 | info->event = 0; | |
5387 | info->count = 0; | |
5388 | info->blocked_open = 0; | |
5389 | info->default_threshold = 0; | |
5390 | info->default_timeout = 0; | |
5391 | INIT_WORK(&info->tqueue, do_softint, info); | |
5392 | init_waitqueue_head(&info->open_wait); | |
5393 | init_waitqueue_head(&info->close_wait); | |
5394 | init_waitqueue_head(&info->shutdown_wait); | |
5395 | init_waitqueue_head(&info->delta_msr_wait); | |
5396 | /* info->session */ | |
5397 | /* info->pgrp */ | |
5398 | info->read_status_mask = 0; | |
5399 | /* info->timeout */ | |
5400 | /* Bentson's vars */ | |
5401 | info->jiffies[0] = 0; | |
5402 | info->jiffies[1] = 0; | |
5403 | info->jiffies[2] = 0; | |
5404 | info->rflush_count = 0; | |
5405 | #ifdef CONFIG_CYZ_INTR | |
5406 | init_timer(&cyz_rx_full_timer[port]); | |
5407 | cyz_rx_full_timer[port].function = NULL; | |
5408 | #endif | |
5409 | } | |
5410 | continue; | |
5411 | }else{ /* Cyclom-Y of some kind*/ | |
5412 | index = cinfo->bus_index; | |
5413 | spin_lock_init(&cinfo->card_lock); | |
5414 | cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips; | |
5415 | for (port = cinfo->first_line ; | |
5416 | port < cinfo->first_line + cinfo->nports ; | |
5417 | port++) | |
5418 | { | |
5419 | info = &cy_port[port]; | |
5420 | info->magic = CYCLADES_MAGIC; | |
5421 | info->type = PORT_CIRRUS; | |
5422 | info->card = board; | |
5423 | info->line = port; | |
5424 | info->flags = STD_COM_FLAGS; | |
5425 | info->tty = NULL; | |
5426 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; | |
5427 | info->cor1 = CyPARITY_NONE|Cy_1_STOP|Cy_8_BITS; | |
5428 | info->cor2 = CyETC; | |
5429 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
5430 | info->cor4 = 0; | |
5431 | info->cor5 = 0; | |
5432 | info->custom_divisor = 0; | |
5433 | info->close_delay = 5*HZ/10; | |
5434 | info->closing_wait = CLOSING_WAIT_DELAY; | |
5435 | info->icount.cts = info->icount.dsr = | |
5436 | info->icount.rng = info->icount.dcd = 0; | |
5437 | info->icount.rx = info->icount.tx = 0; | |
5438 | info->icount.frame = info->icount.parity = 0; | |
5439 | info->icount.overrun = info->icount.brk = 0; | |
5440 | chip_number = (port - cinfo->first_line) / 4; | |
5441 | if ((info->chip_rev = | |
5442 | cy_readb(cinfo->base_addr + | |
5443 | (cy_chip_offset[chip_number]<<index) + | |
5444 | (CyGFRCR<<index))) >= CD1400_REV_J) { | |
5445 | /* It is a CD1400 rev. J or later */ | |
5446 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
5447 | info->tco = baud_co_60[13]; /* Tx CO */ | |
5448 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
5449 | info->rco = baud_co_60[13]; /* Rx CO */ | |
5450 | info->rflow = 0; | |
5451 | info->rtsdtr_inv = 1; | |
5452 | } else { | |
5453 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
5454 | info->tco = baud_co_25[13]; /* Tx CO */ | |
5455 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
5456 | info->rco = baud_co_25[13]; /* Rx CO */ | |
5457 | info->rflow = 0; | |
5458 | info->rtsdtr_inv = 0; | |
5459 | } | |
5460 | info->x_char = 0; | |
5461 | info->event = 0; | |
5462 | info->count = 0; | |
5463 | info->blocked_open = 0; | |
5464 | info->default_threshold = 0; | |
5465 | info->default_timeout = 0; | |
5466 | INIT_WORK(&info->tqueue, do_softint, info); | |
5467 | init_waitqueue_head(&info->open_wait); | |
5468 | init_waitqueue_head(&info->close_wait); | |
5469 | init_waitqueue_head(&info->shutdown_wait); | |
5470 | init_waitqueue_head(&info->delta_msr_wait); | |
5471 | /* info->session */ | |
5472 | /* info->pgrp */ | |
5473 | info->read_status_mask = | |
5474 | CyTIMEOUT| CySPECHAR| CyBREAK | |
5475 | | CyPARITY| CyFRAME| CyOVERRUN; | |
5476 | /* info->timeout */ | |
5477 | } | |
5478 | } | |
5479 | } | |
5480 | ||
5481 | #ifndef CONFIG_CYZ_INTR | |
5482 | if (number_z_boards && !cyz_timeron){ | |
5483 | cyz_timeron++; | |
5484 | cyz_timerlist.expires = jiffies + 1; | |
5485 | add_timer(&cyz_timerlist); | |
5486 | #ifdef CY_PCI_DEBUG | |
5487 | printk("Cyclades-Z polling initialized\n"); | |
5488 | #endif | |
5489 | } | |
5490 | #endif /* CONFIG_CYZ_INTR */ | |
5491 | ||
5492 | return 0; | |
5493 | ||
5494 | } /* cy_init */ | |
5495 | ||
5496 | static void __exit | |
5497 | cy_cleanup_module(void) | |
5498 | { | |
5499 | int i, e1; | |
5500 | ||
5501 | #ifndef CONFIG_CYZ_INTR | |
5502 | if (cyz_timeron){ | |
5503 | cyz_timeron = 0; | |
5504 | del_timer(&cyz_timerlist); | |
5505 | } | |
5506 | #endif /* CONFIG_CYZ_INTR */ | |
5507 | ||
5508 | if ((e1 = tty_unregister_driver(cy_serial_driver))) | |
5509 | printk("cyc: failed to unregister Cyclades serial driver(%d)\n", | |
5510 | e1); | |
5511 | ||
5512 | put_tty_driver(cy_serial_driver); | |
5513 | ||
5514 | for (i = 0; i < NR_CARDS; i++) { | |
5515 | if (cy_card[i].base_addr) { | |
5516 | iounmap(cy_card[i].base_addr); | |
5517 | if (cy_card[i].ctl_addr) | |
5518 | iounmap(cy_card[i].ctl_addr); | |
5519 | if (cy_card[i].irq | |
5520 | #ifndef CONFIG_CYZ_INTR | |
5521 | && cy_card[i].num_chips != -1 /* not a Z card */ | |
5522 | #endif /* CONFIG_CYZ_INTR */ | |
5523 | ) | |
5524 | free_irq(cy_card[i].irq, &cy_card[i]); | |
5525 | #ifdef CONFIG_PCI | |
5526 | if (cy_card[i].pdev) | |
5527 | pci_release_regions(cy_card[i].pdev); | |
5528 | #endif | |
5529 | } | |
5530 | } | |
5531 | if (tmp_buf) { | |
5532 | free_page((unsigned long) tmp_buf); | |
5533 | tmp_buf = NULL; | |
5534 | } | |
5535 | } /* cy_cleanup_module */ | |
5536 | ||
5537 | module_init(cy_init); | |
5538 | module_exit(cy_cleanup_module); | |
5539 | ||
5540 | MODULE_LICENSE("GPL"); |