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1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
4 | |
5 | /* | |
6 | * linux/drivers/char/cyclades.c | |
7 | * | |
8 | * This file contains the driver for the Cyclades async multiport | |
9 | * serial boards. | |
10 | * | |
11 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
12 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
13 | * Currently maintained by Cyclades team <async@cyclades.com>. | |
14 | * | |
15 | * For Technical support and installation problems, please send e-mail | |
16 | * to support@cyclades.com. | |
17 | * | |
18 | * Much of the design and some of the code came from serial.c | |
19 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
20 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
21 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
22 | * | |
23 | * This version supports shared IRQ's (only for PCI boards). | |
24 | * | |
25 | * $Log: cyclades.c,v $ | |
26 | * Prevent users from opening non-existing Z ports. | |
27 | * | |
28 | * Revision 2.3.2.8 2000/07/06 18:14:16 ivan | |
29 | * Fixed the PCI detection function to work properly on Alpha systems. | |
30 | * Implemented support for TIOCSERGETLSR ioctl. | |
31 | * Implemented full support for non-standard baud rates. | |
32 | * | |
33 | * Revision 2.3.2.7 2000/06/01 18:26:34 ivan | |
34 | * Request PLX I/O region, although driver doesn't use it, to avoid | |
35 | * problems with other drivers accessing it. | |
36 | * Removed count for on-board buffer characters in cy_chars_in_buffer | |
37 | * (Cyclades-Z only). | |
38 | * | |
39 | * Revision 2.3.2.6 2000/05/05 13:56:05 ivan | |
40 | * Driver now reports physical instead of virtual memory addresses. | |
41 | * Masks were added to some Cyclades-Z read accesses. | |
42 | * Implemented workaround for PLX9050 bug that would cause a system lockup | |
43 | * in certain systems, depending on the MMIO addresses allocated to the | |
44 | * board. | |
45 | * Changed the Tx interrupt programming in the CD1400 chips to boost up | |
46 | * performance (Cyclom-Y only). | |
47 | * Code is now compliant with the new module interface (module_[init|exit]). | |
48 | * Make use of the PCI helper functions to access PCI resources. | |
49 | * Did some code "housekeeping". | |
50 | * | |
51 | * Revision 2.3.2.5 2000/01/19 14:35:33 ivan | |
52 | * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. | |
53 | * | |
54 | * Revision 2.3.2.4 2000/01/17 09:19:40 ivan | |
55 | * Fixed SMP locking in Cyclom-Y interrupt handler. | |
56 | * | |
57 | * Revision 2.3.2.3 1999/12/28 12:11:39 ivan | |
58 | * Added a new cyclades_card field called nports to allow the driver to | |
59 | * know the exact number of ports found by the Z firmware after its load; | |
60 | * RX buffer contention prevention logic on interrupt op mode revisited | |
61 | * (Cyclades-Z only); | |
62 | * Revisited printk's for Z debug; | |
63 | * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; | |
64 | * | |
65 | * Revision 2.3.2.2 1999/10/01 11:27:43 ivan | |
66 | * Fixed bug in cyz_poll that would make all ports but port 0 | |
67 | * unable to transmit/receive data (Cyclades-Z only); | |
68 | * Implemented logic to prevent the RX buffer from being stuck with data | |
69 | * due to a driver / firmware race condition in interrupt op mode | |
70 | * (Cyclades-Z only); | |
71 | * Fixed bug in block_til_ready logic that would lead to a system crash; | |
72 | * Revisited cy_close spinlock usage; | |
73 | * | |
74 | * Revision 2.3.2.1 1999/09/28 11:01:22 ivan | |
75 | * Revisited CONFIG_PCI conditional compilation for PCI board support; | |
76 | * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; | |
77 | * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; | |
78 | * Removed CTS handling from the driver -- this is now completely handled | |
79 | * by the firmware (Cyclades-Z only); | |
80 | * Flush RX on-board buffers on a port open (Cyclades-Z only); | |
81 | * Fixed handling of ASYNC_SPD_* TTY flags; | |
82 | * Module unload now unmaps all memory area allocated by ioremap; | |
83 | * | |
84 | * Revision 2.3.1.1 1999/07/15 16:45:53 ivan | |
85 | * Removed CY_PROC conditional compilation; | |
86 | * Implemented SMP-awareness for the driver; | |
87 | * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] | |
88 | * functions; | |
89 | * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs | |
90 | * (irq=NN) as parameters (only for ISA boards); | |
91 | * Fixed bug in set_line_char that would prevent the Cyclades-Z | |
92 | * ports from being configured at speeds above 115.2Kbps; | |
93 | * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control | |
94 | * switching from working properly; | |
95 | * The driver now only prints IRQ info for the Cyclades-Z if it's | |
96 | * configured to work in interrupt mode; | |
97 | * | |
98 | * Revision 2.2.2.3 1999/06/28 11:13:29 ivan | |
99 | * Added support for interrupt mode operation for the Z cards; | |
100 | * Removed the driver inactivity control for the Z; | |
101 | * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when | |
102 | * the Z firmware is not loaded yet; | |
103 | * Replaced the "manual" Z Tx flush buffer by a call to a FW command of | |
104 | * same functionality; | |
105 | * Implemented workaround for IRQ setting loss on the PCI configuration | |
106 | * registers after a PCI bridge EEPROM reload (affects PLX9060 only); | |
107 | * | |
108 | * Revision 2.2.2.2 1999/05/14 17:18:15 ivan | |
109 | * /proc entry location changed to /proc/tty/driver/cyclades; | |
110 | * Added support to shared IRQ's (only for PCI boards); | |
111 | * Added support for Cobalt Qube2 systems; | |
112 | * IRQ [de]allocation scheme revisited; | |
113 | * BREAK implementation changed in order to make use of the 'break_ctl' | |
114 | * TTY facility; | |
115 | * Fixed typo in TTY structure field 'driver_name'; | |
116 | * Included a PCI bridge reset and EEPROM reload in the board | |
117 | * initialization code (for both Y and Z series). | |
118 | * | |
119 | * Revision 2.2.2.1 1999/04/08 16:17:43 ivan | |
120 | * Fixed a bug in cy_wait_until_sent that was preventing the port to be | |
121 | * closed properly after a SIGINT; | |
122 | * Module usage counter scheme revisited; | |
123 | * Added support to the upcoming Y PCI boards (i.e., support to additional | |
124 | * PCI Device ID's). | |
125 | * | |
126 | * Revision 2.2.1.10 1999/01/20 16:14:29 ivan | |
127 | * Removed all unnecessary page-alignement operations in ioremap calls | |
128 | * (ioremap is currently safe for these operations). | |
129 | * | |
130 | * Revision 2.2.1.9 1998/12/30 18:18:30 ivan | |
131 | * Changed access to PLX PCI bridge registers from I/O to MMIO, in | |
132 | * order to make PLX9050-based boards work with certain motherboards. | |
133 | * | |
134 | * Revision 2.2.1.8 1998/11/13 12:46:20 ivan | |
135 | * cy_close function now resets (correctly) the tty->closing flag; | |
136 | * JIFFIES_DIFF macro fixed. | |
137 | * | |
138 | * Revision 2.2.1.7 1998/09/03 12:07:28 ivan | |
139 | * Fixed bug in cy_close function, which was not informing HW of | |
140 | * which port should have the reception disabled before doing so; | |
141 | * fixed Cyclom-8YoP hardware detection bug. | |
142 | * | |
143 | * Revision 2.2.1.6 1998/08/20 17:15:39 ivan | |
144 | * Fixed bug in cy_close function, which causes malfunction | |
145 | * of one of the first 4 ports when a higher port is closed | |
146 | * (Cyclom-Y only). | |
147 | * | |
148 | * Revision 2.2.1.5 1998/08/10 18:10:28 ivan | |
149 | * Fixed Cyclom-4Yo hardware detection bug. | |
150 | * | |
151 | * Revision 2.2.1.4 1998/08/04 11:02:50 ivan | |
152 | * /proc/cyclades implementation with great collaboration of | |
153 | * Marc Lewis <marc@blarg.net>; | |
154 | * cyy_interrupt was changed to avoid occurrence of kernel oopses | |
155 | * during PPP operation. | |
156 | * | |
157 | * Revision 2.2.1.3 1998/06/01 12:09:10 ivan | |
158 | * General code review in order to comply with 2.1 kernel standards; | |
159 | * data loss prevention for slow devices revisited (cy_wait_until_sent | |
160 | * was created); | |
161 | * removed conditional compilation for new/old PCI structure support | |
162 | * (now the driver only supports the new PCI structure). | |
163 | * | |
164 | * Revision 2.2.1.1 1998/03/19 16:43:12 ivan | |
165 | * added conditional compilation for new/old PCI structure support; | |
166 | * removed kernel series (2.0.x / 2.1.x) conditional compilation. | |
167 | * | |
168 | * Revision 2.1.1.3 1998/03/16 18:01:12 ivan | |
169 | * cleaned up the data loss fix; | |
170 | * fixed XON/XOFF handling once more (Cyclades-Z); | |
171 | * general review of the driver routines; | |
172 | * introduction of a mechanism to prevent data loss with slow | |
173 | * printers, by forcing a delay before closing the port. | |
174 | * | |
175 | * Revision 2.1.1.2 1998/02/17 16:50:00 ivan | |
176 | * fixed detection/handling of new CD1400 in Ye boards; | |
177 | * fixed XON/XOFF handling (Cyclades-Z); | |
178 | * fixed data loss caused by a premature port close; | |
179 | * introduction of a flag that holds the CD1400 version ID per port | |
180 | * (used by the CYGETCD1400VER new ioctl). | |
181 | * | |
182 | * Revision 2.1.1.1 1997/12/03 17:31:19 ivan | |
183 | * Code review for the module cleanup routine; | |
184 | * fixed RTS and DTR status report for new CD1400's in get_modem_info; | |
185 | * includes anonymous changes regarding signal_pending. | |
186 | * | |
187 | * Revision 2.1 1997/11/01 17:42:41 ivan | |
188 | * Changes in the driver to support Alpha systems (except 8Zo V_1); | |
189 | * BREAK fix for the Cyclades-Z boards; | |
190 | * driver inactivity control by FW implemented; | |
191 | * introduction of flag that allows driver to take advantage of | |
192 | * a special CD1400 feature related to HW flow control; | |
193 | * added support for the CD1400 rev. J (Cyclom-Y boards); | |
194 | * introduction of ioctls to: | |
195 | * - control the rtsdtr_inv flag (Cyclom-Y); | |
196 | * - control the rflow flag (Cyclom-Y); | |
197 | * - adjust the polling interval (Cyclades-Z); | |
198 | * | |
199 | * Revision 1.36.4.33 1997/06/27 19:00:00 ivan | |
200 | * Fixes related to kernel version conditional | |
201 | * compilation. | |
202 | * | |
203 | * Revision 1.36.4.32 1997/06/14 19:30:00 ivan | |
204 | * Compatibility issues between kernels 2.0.x and | |
205 | * 2.1.x (mainly related to clear_bit function). | |
206 | * | |
207 | * Revision 1.36.4.31 1997/06/03 15:30:00 ivan | |
208 | * Changes to define the memory window according to the | |
209 | * board type. | |
210 | * | |
211 | * Revision 1.36.4.30 1997/05/16 15:30:00 daniel | |
212 | * Changes to support new cycladesZ boards. | |
213 | * | |
214 | * Revision 1.36.4.29 1997/05/12 11:30:00 daniel | |
215 | * Merge of Bentson's and Daniel's version 1.36.4.28. | |
216 | * Corrects bug in cy_detect_pci: check if there are more | |
217 | * ports than the number of static structs allocated. | |
218 | * Warning message during initialization if this driver is | |
219 | * used with the new generation of cycladesZ boards. Those | |
220 | * will be supported only in next release of the driver. | |
221 | * Corrects bug in cy_detect_pci and cy_detect_isa that | |
222 | * returned wrong number of VALID boards, when a cyclomY | |
223 | * was found with no serial modules connected. | |
224 | * Changes to use current (2.1.x) kernel subroutine names | |
225 | * and created macros for compilation with 2.0.x kernel, | |
226 | * instead of the other way around. | |
227 | * | |
228 | * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson | |
229 | * Change queue_task_irq_off to queue_task_irq. | |
230 | * The inline function queue_task_irq_off (tqueue.h) | |
231 | * was removed from latest releases of 2.1.x kernel. | |
232 | * Use of macro __init to mark the initialization | |
233 | * routines, so memory can be reused. | |
234 | * Also incorporate implementation of critical region | |
235 | * in function cleanup_module() created by anonymous | |
236 | * linuxer. | |
237 | * | |
238 | * Revision 1.36.4.28 1997/04/25 16:00:00 daniel | |
239 | * Change to support new firmware that solves DCD problem: | |
240 | * application could fail to receive SIGHUP signal when DCD | |
241 | * varying too fast. | |
242 | * | |
243 | * Revision 1.36.4.27 1997/03/26 10:30:00 daniel | |
244 | * Changed for support linux versions 2.1.X. | |
245 | * Backward compatible with linux versions 2.0.X. | |
246 | * Corrected illegal use of filler field in | |
247 | * CH_CTRL struct. | |
248 | * Deleted some debug messages. | |
249 | * | |
250 | * Revision 1.36.4.26 1997/02/27 12:00:00 daniel | |
251 | * Included check for NULL tty pointer in cyz_poll. | |
252 | * | |
253 | * Revision 1.36.4.25 1997/02/26 16:28:30 bentson | |
254 | * Bill Foster at Blarg! Online services noticed that | |
255 | * some of the switch elements of -Z modem control | |
256 | * lacked a closing "break;" | |
257 | * | |
258 | * Revision 1.36.4.24 1997/02/24 11:00:00 daniel | |
259 | * Changed low water threshold for buffer xmit_buf | |
260 | * | |
261 | * Revision 1.36.4.23 1996/12/02 21:50:16 bentson | |
262 | * Marcio provided fix to modem status fetch for -Z | |
263 | * | |
264 | * Revision 1.36.4.22 1996/10/28 22:41:17 bentson | |
265 | * improve mapping of -Z control page (thanks to Steve | |
266 | * Price <stevep@fa.tdktca.com> for help on this) | |
267 | * | |
268 | * Revision 1.36.4.21 1996/09/10 17:00:10 bentson | |
269 | * shift from CPU-bound to memcopy in cyz_polling operation | |
270 | * | |
271 | * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson | |
272 | * Added support to set and report higher speeds. | |
273 | * | |
274 | * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito | |
275 | * Some fixes in the HW flow control for the BETA release. | |
276 | * Don't try to register the IRQ. | |
277 | * | |
278 | * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson | |
279 | * make sure "cyc" appears in all kernel messages; all soft interrupts | |
280 | * handled by same routine; recognize out-of-band reception; comment | |
281 | * out some diagnostic messages; leave RTS/CTS flow control to hardware; | |
33430dc5 | 282 | * fix race condition in -Z buffer management; only -Y needs to explicitly |
1da177e4 LT |
283 | * flush chars; tidy up some startup messages; |
284 | * | |
285 | * Revision 1.36.4.18 1996/07/25 18:57:31 bentson | |
286 | * shift MOD_INC_USE_COUNT location to match | |
287 | * serial.c; purge some diagnostic messages; | |
288 | * | |
289 | * Revision 1.36.4.17 1996/07/25 18:01:08 bentson | |
290 | * enable modem status messages and fetch & process them; note | |
291 | * time of last activity type for each port; set_line_char now | |
292 | * supports more than line 0 and treats 0 baud correctly; | |
293 | * get_modem_info senses rs_status; | |
294 | * | |
295 | * Revision 1.36.4.16 1996/07/20 08:43:15 bentson | |
296 | * barely works--now's time to turn on | |
297 | * more features 'til it breaks | |
298 | * | |
299 | * Revision 1.36.4.15 1996/07/19 22:30:06 bentson | |
300 | * check more -Z board status; shorten boot message | |
301 | * | |
302 | * Revision 1.36.4.14 1996/07/19 22:20:37 bentson | |
303 | * fix reference to ch_ctrl in startup; verify return | |
304 | * values from cyz_issue_cmd and cyz_update_channel; | |
305 | * more stuff to get modem control correct; | |
306 | * | |
307 | * Revision 1.36.4.13 1996/07/11 19:53:33 bentson | |
308 | * more -Z stuff folded in; re-order changes to put -Z stuff | |
309 | * after -Y stuff (to make changes clearer) | |
310 | * | |
311 | * Revision 1.36.4.12 1996/07/11 15:40:55 bentson | |
312 | * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. | |
313 | * Add code to send break. Clear firmware ID word at startup (so | |
314 | * that other code won't talk to inactive board). | |
315 | * | |
316 | * Revision 1.36.4.11 1996/07/09 05:28:29 bentson | |
317 | * add code for -Z in set_line_char | |
318 | * | |
319 | * Revision 1.36.4.10 1996/07/08 19:28:37 bentson | |
320 | * fold more -Z stuff (or in some cases, error messages) | |
321 | * into driver; add text to "don't know what to do" messages. | |
322 | * | |
323 | * Revision 1.36.4.9 1996/07/08 18:38:38 bentson | |
324 | * moved compile-time flags near top of file; cosmetic changes | |
325 | * to narrow text (to allow 2-up printing); changed many declarations | |
326 | * to "static" to limit external symbols; shuffled code order to | |
327 | * coalesce -Y and -Z specific code, also to put internal functions | |
328 | * in order of tty_driver structure; added code to recognize -Z | |
329 | * ports (and for moment, do nothing or report error); add cy_startup | |
330 | * to parse boot command line for extra base addresses for ISA probes; | |
331 | * | |
332 | * Revision 1.36.4.8 1996/06/25 17:40:19 bentson | |
333 | * reorder some code, fix types of some vars (int vs. long), | |
334 | * add cy_setup to support user declared ISA addresses | |
335 | * | |
336 | * Revision 1.36.4.7 1996/06/21 23:06:18 bentson | |
337 | * dump ioctl based firmware load (it's now a user level | |
338 | * program); ensure uninitialzed ports cannot be used | |
339 | * | |
340 | * Revision 1.36.4.6 1996/06/20 23:17:19 bentson | |
341 | * rename vars and restructure some code | |
342 | * | |
343 | * Revision 1.36.4.5 1996/06/14 15:09:44 bentson | |
344 | * get right status back after boot load | |
345 | * | |
346 | * Revision 1.36.4.4 1996/06/13 19:51:44 bentson | |
347 | * successfully loads firmware | |
348 | * | |
349 | * Revision 1.36.4.3 1996/06/13 06:08:33 bentson | |
350 | * add more of the code for the boot/load ioctls | |
351 | * | |
352 | * Revision 1.36.4.2 1996/06/11 21:00:51 bentson | |
353 | * start to add Z functionality--starting with ioctl | |
354 | * for loading firmware | |
355 | * | |
356 | * Revision 1.36.4.1 1996/06/10 18:03:02 bentson | |
357 | * added code to recognize Z/PCI card at initialization; report | |
358 | * presence, but card is not initialized (because firmware needs | |
359 | * to be loaded) | |
360 | * | |
361 | * Revision 1.36.3.8 1996/06/07 16:29:00 bentson | |
362 | * starting minor number at zero; added missing verify_area | |
363 | * as noted by Heiko Eissfeldt <heiko@colossus.escape.de> | |
364 | * | |
365 | * Revision 1.36.3.7 1996/04/19 21:06:18 bentson | |
366 | * remove unneeded boot message & fix CLOCAL hardware flow | |
367 | * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); | |
368 | * remove unused diagnostic statements; minor 0 is first; | |
369 | * | |
370 | * Revision 1.36.3.6 1996/03/13 13:21:17 marcio | |
371 | * The kernel function vremap (available only in later 1.3.xx kernels) | |
372 | * allows the access to memory addresses above the RAM. This revision | |
373 | * of the driver supports PCI boards below 1Mb (device id 0x100) and | |
374 | * above 1Mb (device id 0x101). | |
375 | * | |
376 | * Revision 1.36.3.5 1996/03/07 15:20:17 bentson | |
377 | * Some global changes to interrupt handling spilled into | |
378 | * this driver--mostly unused arguments in system function | |
379 | * calls. Also added change by Marcio Saito which should | |
380 | * reduce lost interrupts at startup by fast processors. | |
381 | * | |
382 | * Revision 1.36.3.4 1995/11/13 20:45:10 bentson | |
383 | * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed | |
384 | * in 1.3.41 kernel to remove a possible race condition, extend | |
385 | * some error messages, and let the driver run as a loadable module | |
386 | * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a | |
387 | * possible race condition. | |
388 | * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. | |
389 | * | |
390 | * Revision 1.36.3.3 1995/11/13 19:44:48 bentson | |
391 | * Changes by Linus Torvalds in 1.3.33 kernel distribution | |
392 | * required due to reordering of driver initialization. | |
393 | * Drivers are now initialized *after* memory management. | |
394 | * | |
395 | * Revision 1.36.3.2 1995/09/08 22:07:14 bentson | |
396 | * remove printk from ISR; fix typo | |
397 | * | |
398 | * Revision 1.36.3.1 1995/09/01 12:00:42 marcio | |
399 | * Minor fixes in the PCI board support. PCI function calls in | |
400 | * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan | |
401 | * <duncan@okay.com>. "bad serial count" message removed. | |
402 | * | |
403 | * Revision 1.36.3 1995/08/22 09:19:42 marcio | |
404 | * Cyclom-Y/PCI support added. Changes in the cy_init routine and | |
405 | * board initialization. Changes in the boot messages. The driver | |
406 | * supports up to 4 boards and 64 ports by default. | |
407 | * | |
408 | * Revision 1.36.1.4 1995/03/29 06:14:14 bentson | |
409 | * disambiguate between Cyclom-16Y and Cyclom-32Ye; | |
410 | * | |
411 | * Revision 1.36.1.3 1995/03/23 22:15:35 bentson | |
412 | * add missing break in modem control block in ioctl switch statement | |
413 | * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); | |
414 | * | |
415 | * Revision 1.36.1.2 1995/03/22 19:16:22 bentson | |
416 | * make sure CTS flow control is set as soon as possible (thanks | |
417 | * to note from David Lambert <lambert@chesapeake.rps.slb.com>); | |
418 | * | |
419 | * Revision 1.36.1.1 1995/03/13 15:44:43 bentson | |
420 | * initialize defaults for receive threshold and stale data timeout; | |
421 | * cosmetic changes; | |
422 | * | |
423 | * Revision 1.36 1995/03/10 23:33:53 bentson | |
424 | * added support of chips 4-7 in 32 port Cyclom-Ye; | |
425 | * fix cy_interrupt pointer dereference problem | |
426 | * (Joe Portman <baron@aa.net>); | |
427 | * give better error response if open is attempted on non-existent port | |
428 | * (Zachariah Vaum <jchryslr@netcom.com>); | |
429 | * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); | |
430 | * conditional compilation for -16Y on systems with fast, noisy bus; | |
431 | * comment out diagnostic print function; | |
432 | * cleaned up table of base addresses; | |
433 | * set receiver time-out period register to correct value, | |
434 | * set receive threshold to better default values, | |
435 | * set chip timer to more accurate 200 Hz ticking, | |
436 | * add code to monitor and modify receive parameters | |
437 | * (Rik Faith <faith@cs.unc.edu> Nick Simicich | |
438 | * <njs@scifi.emi.net>); | |
439 | * | |
440 | * Revision 1.35 1994/12/16 13:54:18 steffen | |
441 | * additional patch by Marcio Saito for board detection | |
442 | * Accidently left out in 1.34 | |
443 | * | |
444 | * Revision 1.34 1994/12/10 12:37:12 steffen | |
445 | * This is the corrected version as suggested by Marcio Saito | |
446 | * | |
447 | * Revision 1.33 1994/12/01 22:41:18 bentson | |
448 | * add hooks to support more high speeds directly; add tytso | |
449 | * patch regarding CLOCAL wakeups | |
450 | * | |
451 | * Revision 1.32 1994/11/23 19:50:04 bentson | |
452 | * allow direct kernel control of higher signalling rates; | |
453 | * look for cards at additional locations | |
454 | * | |
455 | * Revision 1.31 1994/11/16 04:33:28 bentson | |
456 | * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- | |
457 | * a problem in chars_in_buffer has been resolved by some | |
458 | * small changes; this should yield smoother output | |
459 | * | |
460 | * Revision 1.30 1994/11/16 04:28:05 bentson | |
461 | * Fix from Corey Minyard, Internet: minyard@metronet.com, | |
462 | * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to | |
463 | * cy_hangup that appears to clear up much (all?) of the | |
464 | * DTR glitches; also he's added/cleaned-up diagnostic messages | |
465 | * | |
466 | * Revision 1.29 1994/11/16 04:16:07 bentson | |
467 | * add change proposed by Ralph Sims, ralphs@halcyon.com, to | |
468 | * operate higher speeds in same way as other serial ports; | |
469 | * add more serial ports (for up to two 16-port muxes). | |
470 | * | |
471 | * Revision 1.28 1994/11/04 00:13:16 root | |
472 | * turn off diagnostic messages | |
473 | * | |
474 | * Revision 1.27 1994/11/03 23:46:37 root | |
475 | * bunch of changes to bring driver into greater conformance | |
476 | * with the serial.c driver (looking for missed fixes) | |
477 | * | |
478 | * Revision 1.26 1994/11/03 22:40:36 root | |
479 | * automatic interrupt probing fixed. | |
480 | * | |
481 | * Revision 1.25 1994/11/03 20:17:02 root | |
482 | * start to implement auto-irq | |
483 | * | |
484 | * Revision 1.24 1994/11/03 18:01:55 root | |
485 | * still working on modem signals--trying not to drop DTR | |
486 | * during the getty/login processes | |
487 | * | |
488 | * Revision 1.23 1994/11/03 17:51:36 root | |
489 | * extend baud rate support; set receive threshold as function | |
490 | * of baud rate; fix some problems with RTS/CTS; | |
491 | * | |
492 | * Revision 1.22 1994/11/02 18:05:35 root | |
493 | * changed arguments to udelay to type long to get | |
494 | * delays to be of correct duration | |
495 | * | |
496 | * Revision 1.21 1994/11/02 17:37:30 root | |
497 | * employ udelay (after calibrating loops_per_second earlier | |
498 | * in init/main.c) instead of using home-grown delay routines | |
499 | * | |
500 | * Revision 1.20 1994/11/02 03:11:38 root | |
501 | * cy_chars_in_buffer forces a return value of 0 to let | |
502 | * login work (don't know why it does); some functions | |
503 | * that were returning EFAULT, now executes the code; | |
504 | * more work on deciding when to disable xmit interrupts; | |
505 | * | |
506 | * Revision 1.19 1994/11/01 20:10:14 root | |
507 | * define routine to start transmission interrupts (by enabling | |
508 | * transmit interrupts); directly enable/disable modem interrupts; | |
509 | * | |
510 | * Revision 1.18 1994/11/01 18:40:45 bentson | |
511 | * Don't always enable transmit interrupts in startup; interrupt on | |
512 | * TxMpty instead of TxRdy to help characters get out before shutdown; | |
513 | * restructure xmit interrupt to check for chars first and quit if | |
514 | * none are ready to go; modem status (MXVRx) is upright, _not_ inverted | |
515 | * (to my view); | |
516 | * | |
517 | * Revision 1.17 1994/10/30 04:39:45 bentson | |
518 | * rename serial_driver and callout_driver to cy_serial_driver and | |
519 | * cy_callout_driver to avoid linkage interference; initialize | |
520 | * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port | |
521 | * from cyclades_port structure; add paranoia check to cy_close; | |
522 | * | |
523 | * Revision 1.16 1994/10/30 01:14:33 bentson | |
524 | * change major numbers; add some _early_ return statements; | |
525 | * | |
526 | * Revision 1.15 1994/10/29 06:43:15 bentson | |
527 | * final tidying up for clean compile; enable some error reporting | |
528 | * | |
529 | * Revision 1.14 1994/10/28 20:30:22 Bentson | |
530 | * lots of changes to drag the driver towards the new tty_io | |
531 | * structures and operation. not expected to work, but may | |
532 | * compile cleanly. | |
533 | * | |
534 | * Revision 1.13 1994/07/21 23:08:57 Bentson | |
535 | * add some diagnostic cruft; support 24 lines (for testing | |
536 | * both -8Y and -16Y cards; be more thorough in servicing all | |
537 | * chips during interrupt; add "volatile" a few places to | |
538 | * circumvent compiler optimizations; fix base & offset | |
539 | * computations in block_til_ready (was causing chip 0 to | |
540 | * stop operation) | |
541 | * | |
542 | * Revision 1.12 1994/07/19 16:42:11 Bentson | |
543 | * add some hackery for kernel version 1.1.8; expand | |
544 | * error messages; refine timing for delay loops and | |
545 | * declare loop params volatile | |
546 | * | |
547 | * Revision 1.11 1994/06/11 21:53:10 bentson | |
548 | * get use of save_car right in transmit interrupt service | |
549 | * | |
550 | * Revision 1.10.1.1 1994/06/11 21:31:18 bentson | |
551 | * add some diagnostic printing; try to fix save_car stuff | |
552 | * | |
553 | * Revision 1.10 1994/06/11 20:36:08 bentson | |
554 | * clean up compiler warnings | |
555 | * | |
556 | * Revision 1.9 1994/06/11 19:42:46 bentson | |
557 | * added a bunch of code to support modem signalling | |
558 | * | |
559 | * Revision 1.8 1994/06/11 17:57:07 bentson | |
560 | * recognize break & parity error | |
561 | * | |
562 | * Revision 1.7 1994/06/05 05:51:34 bentson | |
563 | * Reorder baud table to be monotonic; add cli to CP; discard | |
564 | * incoming characters and status if the line isn't open; start to | |
565 | * fold code into cy_throttle; start to port get_serial_info, | |
566 | * set_serial_info, get_modem_info, set_modem_info, and send_break | |
567 | * from serial.c; expand cy_ioctl; relocate and expand config_setup; | |
568 | * get flow control characters from tty struct; invalidate ports w/o | |
569 | * hardware; | |
570 | * | |
571 | * Revision 1.6 1994/05/31 18:42:21 bentson | |
572 | * add a loop-breaker in the interrupt service routine; | |
573 | * note when port is initialized so that it can be shut | |
574 | * down under the right conditions; receive works without | |
575 | * any obvious errors | |
576 | * | |
577 | * Revision 1.5 1994/05/30 00:55:02 bentson | |
578 | * transmit works without obvious errors | |
579 | * | |
580 | * Revision 1.4 1994/05/27 18:46:27 bentson | |
581 | * incorporated more code from lib_y.c; can now print short | |
582 | * strings under interrupt control to port zero; seems to | |
583 | * select ports/channels/lines correctly | |
584 | * | |
585 | * Revision 1.3 1994/05/25 22:12:44 bentson | |
586 | * shifting from multi-port on a card to proper multiplexor | |
587 | * data structures; added skeletons of most routines | |
588 | * | |
589 | * Revision 1.2 1994/05/19 13:21:43 bentson | |
590 | * start to crib from other sources | |
591 | * | |
592 | */ | |
593 | ||
096dcfce JS |
594 | #define CY_VERSION "2.4" |
595 | ||
1da177e4 LT |
596 | /* If you need to install more boards than NR_CARDS, change the constant |
597 | in the definition below. No other change is necessary to support up to | |
598 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
599 | ||
02f1175c | 600 | #define NR_CARDS 4 |
1da177e4 LT |
601 | |
602 | /* | |
603 | If the total number of ports is larger than NR_PORTS, change this | |
604 | constant in the definition below. No other change is necessary to | |
605 | support more boards/ports. */ | |
606 | ||
02f1175c | 607 | #define NR_PORTS 256 |
1da177e4 LT |
608 | |
609 | #define ZE_V1_NPORTS 64 | |
610 | #define ZO_V1 0 | |
611 | #define ZO_V2 1 | |
612 | #define ZE_V1 2 | |
613 | ||
614 | #define SERIAL_PARANOIA_CHECK | |
615 | #undef CY_DEBUG_OPEN | |
616 | #undef CY_DEBUG_THROTTLE | |
617 | #undef CY_DEBUG_OTHER | |
618 | #undef CY_DEBUG_IO | |
619 | #undef CY_DEBUG_COUNT | |
620 | #undef CY_DEBUG_DTR | |
621 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
622 | #undef CY_DEBUG_INTERRUPTS | |
623 | #undef CY_16Y_HACK | |
624 | #undef CY_ENABLE_MONITORING | |
625 | #undef CY_PCI_DEBUG | |
626 | ||
1da177e4 LT |
627 | /* |
628 | * Include section | |
629 | */ | |
1da177e4 LT |
630 | #include <linux/module.h> |
631 | #include <linux/errno.h> | |
632 | #include <linux/signal.h> | |
633 | #include <linux/sched.h> | |
634 | #include <linux/timer.h> | |
635 | #include <linux/interrupt.h> | |
636 | #include <linux/tty.h> | |
33f0f88f | 637 | #include <linux/tty_flip.h> |
1da177e4 LT |
638 | #include <linux/serial.h> |
639 | #include <linux/major.h> | |
640 | #include <linux/string.h> | |
641 | #include <linux/fcntl.h> | |
642 | #include <linux/ptrace.h> | |
643 | #include <linux/cyclades.h> | |
644 | #include <linux/mm.h> | |
645 | #include <linux/ioport.h> | |
646 | #include <linux/init.h> | |
647 | #include <linux/delay.h> | |
648 | #include <linux/spinlock.h> | |
649 | #include <linux/bitops.h> | |
650 | ||
651 | #include <asm/system.h> | |
652 | #include <asm/io.h> | |
653 | #include <asm/irq.h> | |
654 | #include <asm/uaccess.h> | |
655 | ||
656 | #define CY_LOCK(info,flags) \ | |
657 | do { \ | |
875b206b | 658 | spin_lock_irqsave(&info->card->card_lock, flags); \ |
1da177e4 | 659 | } while (0) |
02f1175c | 660 | |
1da177e4 LT |
661 | #define CY_UNLOCK(info,flags) \ |
662 | do { \ | |
875b206b | 663 | spin_unlock_irqrestore(&info->card->card_lock, flags); \ |
1da177e4 LT |
664 | } while (0) |
665 | ||
1da177e4 LT |
666 | #include <linux/kernel.h> |
667 | #include <linux/pci.h> | |
668 | ||
669 | #include <linux/stat.h> | |
670 | #include <linux/proc_fs.h> | |
671 | ||
02f1175c JS |
672 | static void cy_throttle(struct tty_struct *tty); |
673 | static void cy_send_xchar(struct tty_struct *tty, char ch); | |
1da177e4 LT |
674 | |
675 | #define IS_CYC_Z(card) ((card).num_chips == -1) | |
676 | ||
677 | #define Z_FPGA_CHECK(card) \ | |
db05c3b1 | 678 | ((readl(&((struct RUNTIME_9060 __iomem *) \ |
02f1175c | 679 | ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) |
1da177e4 | 680 | |
db05c3b1 | 681 | #define ISZLOADED(card) (((ZO_V1==readl(&((struct RUNTIME_9060 __iomem *) \ |
1da177e4 LT |
682 | ((card).ctl_addr))->mail_box_0)) || \ |
683 | Z_FPGA_CHECK(card)) && \ | |
db05c3b1 | 684 | (ZFIRM_ID==readl(&((struct FIRM_ID __iomem *) \ |
1da177e4 LT |
685 | ((card).base_addr+ID_ADDRESS))->signature))) |
686 | ||
687 | #ifndef SERIAL_XMIT_SIZE | |
688 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
689 | #endif | |
690 | #define WAKEUP_CHARS 256 | |
691 | ||
692 | #define STD_COM_FLAGS (0) | |
693 | ||
1da177e4 LT |
694 | static struct tty_driver *cy_serial_driver; |
695 | ||
696 | #ifdef CONFIG_ISA | |
697 | /* This is the address lookup table. The driver will probe for | |
698 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
699 | driver to probe addresses at a different address, add it to | |
700 | this table. If the driver is probing some other board and | |
701 | causing problems, remove the offending address from this table. | |
702 | The cy_setup function extracts additional addresses from the | |
703 | boot options line. The form is "cyclades=address,address..." | |
704 | */ | |
705 | ||
706 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
707 | 0xD0000, |
708 | 0xD2000, | |
709 | 0xD4000, | |
710 | 0xD6000, | |
711 | 0xD8000, | |
712 | 0xDA000, | |
713 | 0xDC000, | |
714 | 0xDE000, | |
715 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 716 | }; |
02f1175c | 717 | |
fe971071 | 718 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 LT |
719 | |
720 | #ifdef MODULE | |
3046d50e JS |
721 | static long maddr[NR_CARDS]; |
722 | static int irq[NR_CARDS]; | |
1da177e4 LT |
723 | |
724 | module_param_array(maddr, long, NULL, 0); | |
725 | module_param_array(irq, int, NULL, 0); | |
726 | #endif | |
727 | ||
02f1175c | 728 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
729 | |
730 | /* This is the per-card data structure containing address, irq, number of | |
731 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
732 | */ | |
733 | static struct cyclades_card cy_card[NR_CARDS]; | |
734 | ||
735 | /* This is the per-channel data structure containing pointers, flags | |
736 | and variables for the port. This driver supports a maximum of NR_PORTS. | |
737 | */ | |
738 | static struct cyclades_port cy_port[NR_PORTS]; | |
739 | ||
02f1175c | 740 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 741 | |
1da177e4 LT |
742 | /* |
743 | * This is used to look up the divisor speeds and the timeouts | |
744 | * We're normally limited to 15 distinct baud rates. The extra | |
745 | * are accessed via settings in info->flags. | |
746 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, | |
747 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
748 | * HI VHI | |
749 | * 20 | |
750 | */ | |
751 | static int baud_table[] = { | |
02f1175c JS |
752 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
753 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
754 | 230400, 0 | |
755 | }; | |
756 | ||
757 | static char baud_co_25[] = { /* 25 MHz clock option table */ | |
758 | /* value => 00 01 02 03 04 */ | |
759 | /* divide by 8 32 128 512 2048 */ | |
760 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
761 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
762 | }; | |
763 | ||
764 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ | |
765 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, | |
766 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
767 | }; | |
768 | ||
769 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ | |
770 | /* value => 00 01 02 03 04 */ | |
771 | /* divide by 8 32 128 512 2048 */ | |
772 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
773 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
774 | 0x00 | |
775 | }; | |
776 | ||
777 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ | |
778 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, | |
779 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
780 | 0x21 | |
781 | }; | |
782 | ||
783 | static char baud_cor3[] = { /* receive threshold */ | |
784 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
785 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
786 | 0x07 | |
787 | }; | |
1da177e4 LT |
788 | |
789 | /* | |
790 | * The Cyclades driver implements HW flow control as any serial driver. | |
791 | * The cyclades_port structure member rflow and the vector rflow_thr | |
792 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
793 | * data loss even when the system interrupt latency is too high. These flags | |
794 | * are to be used only with very special applications. Setting these flags | |
795 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
796 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
797 | * cables. | |
798 | */ | |
799 | ||
02f1175c JS |
800 | static char rflow_thr[] = { /* rflow threshold */ |
801 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
802 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
803 | 0x0a | |
804 | }; | |
1da177e4 LT |
805 | |
806 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
807 | * address order. This look-up table overcomes that problem. | |
808 | */ | |
02f1175c JS |
809 | static int cy_chip_offset[] = { 0x0000, |
810 | 0x0400, | |
811 | 0x0800, | |
812 | 0x0C00, | |
813 | 0x0200, | |
814 | 0x0600, | |
815 | 0x0A00, | |
816 | 0x0E00 | |
817 | }; | |
1da177e4 LT |
818 | |
819 | /* PCI related definitions */ | |
820 | ||
1da177e4 | 821 | #ifdef CONFIG_PCI |
893de2df JS |
822 | static struct pci_device_id cy_pci_dev_id[] __devinitdata = { |
823 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, /* PCI < 1Mb */ | |
824 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, /* PCI > 1Mb */ | |
825 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, /* 4Y PCI < 1Mb */ | |
826 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, /* 4Y PCI > 1Mb */ | |
827 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, /* 8Y PCI < 1Mb */ | |
828 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, /* 8Y PCI > 1Mb */ | |
829 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, /* Z PCI < 1Mb */ | |
830 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, /* Z PCI > 1Mb */ | |
831 | { } /* end of table */ | |
02f1175c | 832 | }; |
893de2df | 833 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
834 | #endif |
835 | ||
836 | static void cy_start(struct tty_struct *); | |
837 | static void set_line_char(struct cyclades_port *); | |
1a86b5e3 | 838 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
839 | #ifdef CONFIG_ISA |
840 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 841 | #endif /* CONFIG_ISA */ |
1da177e4 | 842 | |
02f1175c | 843 | static int cyclades_get_proc_info(char *, char **, off_t, int, int *, void *); |
1da177e4 LT |
844 | |
845 | #ifndef CONFIG_CYZ_INTR | |
846 | static void cyz_poll(unsigned long); | |
847 | ||
848 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
849 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
850 | ||
8d06afab | 851 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 852 | |
02f1175c | 853 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
854 | static void cyz_rx_restart(unsigned long); |
855 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 856 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 857 | |
02f1175c JS |
858 | static inline int serial_paranoia_check(struct cyclades_port *info, |
859 | char *name, const char *routine) | |
1da177e4 LT |
860 | { |
861 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 862 | if (!info) { |
21719191 JS |
863 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
864 | "in %s\n", name, routine); | |
02f1175c JS |
865 | return 1; |
866 | } | |
867 | ||
868 | if ((long)info < (long)(&cy_port[0]) || | |
869 | (long)(&cy_port[NR_PORTS]) < (long)info) { | |
21719191 JS |
870 | printk(KERN_WARNING "cyc Warning: cyclades_port out of range " |
871 | "for (%s) in %s\n", name, routine); | |
02f1175c JS |
872 | return 1; |
873 | } | |
874 | ||
875 | if (info->magic != CYCLADES_MAGIC) { | |
21719191 JS |
876 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
877 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
878 | return 1; |
879 | } | |
1da177e4 | 880 | #endif |
02f1175c JS |
881 | return 0; |
882 | } /* serial_paranoia_check */ | |
1da177e4 LT |
883 | |
884 | /* | |
885 | * This routine is used by the interrupt handler to schedule | |
886 | * processing in the software interrupt portion of the driver | |
887 | * (also known as the "bottom half"). This can be called any | |
888 | * number of times for any channel without harm. | |
889 | */ | |
02f1175c | 890 | static inline void cy_sched_event(struct cyclades_port *info, int event) |
1da177e4 | 891 | { |
02f1175c JS |
892 | info->event |= 1 << event; /* remember what kind of event and who */ |
893 | schedule_work(&info->tqueue); | |
894 | } /* cy_sched_event */ | |
1da177e4 LT |
895 | |
896 | /* | |
897 | * This routine is used to handle the "bottom half" processing for the | |
898 | * serial driver, known also the "software interrupt" processing. | |
899 | * This processing is done at the kernel interrupt level, after the | |
900 | * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This | |
901 | * is where time-consuming activities which can not be done in the | |
902 | * interrupt driver proper are done; the interrupt driver schedules | |
903 | * them using cy_sched_event(), and they get done here. | |
904 | * | |
905 | * This is done through one level of indirection--the task queue. | |
906 | * When a hardware interrupt service routine wants service by the | |
907 | * driver's bottom half, it enqueues the appropriate tq_struct (one | |
908 | * per port) to the keventd work queue and sets a request flag | |
909 | * that the work queue be processed. | |
910 | * | |
911 | * Although this may seem unwieldy, it gives the system a way to | |
912 | * pass an argument (in this case the pointer to the cyclades_port | |
913 | * structure) to the bottom half of the driver. Previous kernels | |
914 | * had to poll every port to see if that port needed servicing. | |
915 | */ | |
916 | static void | |
c4028958 | 917 | do_softint(struct work_struct *work) |
1da177e4 | 918 | { |
c4028958 DH |
919 | struct cyclades_port *info = |
920 | container_of(work, struct cyclades_port, tqueue); | |
02f1175c JS |
921 | struct tty_struct *tty; |
922 | ||
923 | tty = info->tty; | |
924 | if (!tty) | |
925 | return; | |
926 | ||
927 | if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) { | |
928 | tty_hangup(info->tty); | |
929 | wake_up_interruptible(&info->open_wait); | |
930 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
931 | } | |
932 | if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) | |
933 | wake_up_interruptible(&info->open_wait); | |
1da177e4 | 934 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
935 | if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event) && |
936 | !timer_pending(&cyz_rx_full_timer[info->line])) | |
937 | mod_timer(&cyz_rx_full_timer[info->line], jiffies + 1); | |
1da177e4 | 938 | #endif |
02f1175c JS |
939 | if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) |
940 | wake_up_interruptible(&info->delta_msr_wait); | |
941 | tty_wakeup(tty); | |
1da177e4 | 942 | #ifdef Z_WAKE |
02f1175c | 943 | if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) |
2c7fea99 | 944 | complete(&info->shutdown_wait); |
1da177e4 LT |
945 | #endif |
946 | } /* do_softint */ | |
947 | ||
948 | ||
949 | /***********************************************************/ | |
950 | /********* Start of block of Cyclom-Y specific code ********/ | |
951 | ||
952 | /* This routine waits up to 1000 micro-seconds for the previous | |
953 | command to the Cirrus chip to complete and then issues the | |
954 | new command. An error is returned if the previous command | |
955 | didn't finish within the time limit. | |
956 | ||
957 | This function is only called from inside spinlock-protected code. | |
958 | */ | |
02f1175c | 959 | static int cyy_issue_cmd(void __iomem * base_addr, u_char cmd, int index) |
1da177e4 | 960 | { |
ad39c300 | 961 | unsigned int i; |
1da177e4 | 962 | |
02f1175c JS |
963 | /* Check to see that the previous command has completed */ |
964 | for (i = 0; i < 100; i++) { | |
db05c3b1 | 965 | if (readb(base_addr + (CyCCR << index)) == 0) { |
02f1175c JS |
966 | break; |
967 | } | |
968 | udelay(10L); | |
1da177e4 | 969 | } |
02f1175c JS |
970 | /* if the CCR never cleared, the previous command |
971 | didn't finish within the "reasonable time" */ | |
972 | if (i == 100) | |
096dcfce | 973 | return -1; |
1da177e4 | 974 | |
02f1175c JS |
975 | /* Issue the new command */ |
976 | cy_writeb(base_addr + (CyCCR << index), cmd); | |
1da177e4 | 977 | |
096dcfce | 978 | return 0; |
02f1175c | 979 | } /* cyy_issue_cmd */ |
1da177e4 LT |
980 | |
981 | #ifdef CONFIG_ISA | |
982 | /* ISA interrupt detection code */ | |
02f1175c | 983 | static unsigned detect_isa_irq(void __iomem * address) |
1da177e4 | 984 | { |
02f1175c JS |
985 | int irq; |
986 | unsigned long irqs, flags; | |
987 | int save_xir, save_car; | |
988 | int index = 0; /* IRQ probing is only for ISA */ | |
989 | ||
990 | /* forget possible initially masked and pending IRQ */ | |
991 | irq = probe_irq_off(probe_irq_on()); | |
992 | ||
993 | /* Clear interrupts on the board first */ | |
994 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
995 | /* Cy_ClrIntr is 0x1800 */ | |
996 | ||
997 | irqs = probe_irq_on(); | |
998 | /* Wait ... */ | |
999 | udelay(5000L); | |
1000 | ||
1001 | /* Enable the Tx interrupts on the CD1400 */ | |
1002 | local_irq_save(flags); | |
1003 | cy_writeb(address + (CyCAR << index), 0); | |
1004 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); | |
1005 | ||
1006 | cy_writeb(address + (CyCAR << index), 0); | |
1007 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 1008 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
1009 | local_irq_restore(flags); |
1010 | ||
1011 | /* Wait ... */ | |
1012 | udelay(5000L); | |
1013 | ||
1014 | /* Check which interrupt is in use */ | |
1015 | irq = probe_irq_off(irqs); | |
1016 | ||
1017 | /* Clean up */ | |
db05c3b1 JS |
1018 | save_xir = (u_char) readb(address + (CyTIR << index)); |
1019 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
1020 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
1021 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 1022 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
1023 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
1024 | cy_writeb(address + (CyCAR << index), (save_car)); | |
1025 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
1026 | /* Cy_ClrIntr is 0x1800 */ | |
1027 | ||
1028 | return (irq > 0) ? irq : 0; | |
1da177e4 | 1029 | } |
02f1175c | 1030 | #endif /* CONFIG_ISA */ |
1da177e4 | 1031 | |
e941027f | 1032 | static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, |
02f1175c | 1033 | void __iomem * base_addr, int status, int index) |
e941027f JS |
1034 | { |
1035 | struct cyclades_port *info; | |
1036 | struct tty_struct *tty; | |
ad39c300 | 1037 | int char_count; |
e941027f JS |
1038 | int i, j, len, mdm_change, mdm_status, outch; |
1039 | int save_xir, channel, save_car; | |
1040 | char data; | |
1041 | ||
02f1175c | 1042 | if (status & CySRReceive) { /* reception interrupt */ |
e941027f | 1043 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1044 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 1045 | #endif |
02f1175c JS |
1046 | /* determine the channel & change to that context */ |
1047 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1048 | save_xir = (u_char) readb(base_addr + (CyRIR << index)); |
02f1175c JS |
1049 | channel = (u_short) (save_xir & CyIRChannel); |
1050 | i = channel + chip * 4 + cinfo->first_line; | |
1051 | info = &cy_port[i]; | |
db05c3b1 | 1052 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1053 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1054 | ||
1055 | /* if there is nowhere to put the data, discard it */ | |
1056 | if (info->tty == 0) { | |
db05c3b1 | 1057 | j = (readb(base_addr + (CyRIVR << index)) & |
02f1175c JS |
1058 | CyIVRMask); |
1059 | if (j == CyIVRRxEx) { /* exception */ | |
db05c3b1 | 1060 | data = readb(base_addr + (CyRDSR << index)); |
02f1175c | 1061 | } else { /* normal character reception */ |
db05c3b1 | 1062 | char_count = readb(base_addr + |
02f1175c JS |
1063 | (CyRDCR << index)); |
1064 | while (char_count--) { | |
db05c3b1 | 1065 | data = readb(base_addr + |
02f1175c | 1066 | (CyRDSR << index)); |
e941027f | 1067 | } |
e941027f | 1068 | } |
02f1175c JS |
1069 | } else { /* there is an open port for this data */ |
1070 | tty = info->tty; | |
db05c3b1 | 1071 | j = (readb(base_addr + (CyRIVR << index)) & |
02f1175c JS |
1072 | CyIVRMask); |
1073 | if (j == CyIVRRxEx) { /* exception */ | |
db05c3b1 | 1074 | data = readb(base_addr + (CyRDSR << index)); |
02f1175c JS |
1075 | |
1076 | /* For statistics only */ | |
1077 | if (data & CyBREAK) | |
1078 | info->icount.brk++; | |
1079 | else if (data & CyFRAME) | |
1080 | info->icount.frame++; | |
1081 | else if (data & CyPARITY) | |
1082 | info->icount.parity++; | |
1083 | else if (data & CyOVERRUN) | |
1084 | info->icount.overrun++; | |
1085 | ||
1086 | if (data & info->ignore_status_mask) { | |
1087 | info->icount.rx++; | |
1088 | return; | |
1089 | } | |
1090 | if (tty_buffer_request_room(tty, 1)) { | |
1091 | if (data & info->read_status_mask) { | |
1092 | if (data & CyBREAK) { | |
1093 | tty_insert_flip_char( | |
1094 | tty, | |
db05c3b1 | 1095 | readb( |
02f1175c JS |
1096 | base_addr + |
1097 | (CyRDSR << | |
1098 | index)), | |
1099 | TTY_BREAK); | |
1100 | info->icount.rx++; | |
1101 | if (info->flags & | |
1102 | ASYNC_SAK) { | |
1103 | do_SAK(tty); | |
1104 | } | |
1105 | } else if (data & CyFRAME) { | |
1106 | tty_insert_flip_char( | |
1107 | tty, | |
db05c3b1 | 1108 | readb( |
02f1175c JS |
1109 | base_addr + |
1110 | (CyRDSR << | |
1111 | index)), | |
1112 | TTY_FRAME); | |
1113 | info->icount.rx++; | |
1114 | info->idle_stats. | |
1115 | frame_errs++; | |
1116 | } else if (data & CyPARITY) { | |
1117 | /* Pieces of seven... */ | |
1118 | tty_insert_flip_char( | |
1119 | tty, | |
db05c3b1 | 1120 | readb( |
02f1175c JS |
1121 | base_addr + |
1122 | (CyRDSR << | |
1123 | index)), | |
1124 | TTY_PARITY); | |
1125 | info->icount.rx++; | |
1126 | info->idle_stats. | |
1127 | parity_errs++; | |
1128 | } else if (data & CyOVERRUN) { | |
1129 | tty_insert_flip_char( | |
1130 | tty, 0, | |
1131 | TTY_OVERRUN); | |
1132 | info->icount.rx++; | |
1133 | /* If the flip buffer itself is | |
1134 | overflowing, we still lose | |
1135 | the next incoming character. | |
1136 | */ | |
1137 | tty_insert_flip_char( | |
1138 | tty, | |
db05c3b1 | 1139 | readb( |
02f1175c JS |
1140 | base_addr + |
1141 | (CyRDSR << | |
1142 | index)), | |
1143 | TTY_FRAME); | |
1144 | info->icount.rx++; | |
1145 | info->idle_stats. | |
1146 | overruns++; | |
1147 | /* These two conditions may imply */ | |
1148 | /* a normal read should be done. */ | |
1149 | /* }else if(data & CyTIMEOUT){ */ | |
1150 | /* }else if(data & CySPECHAR){ */ | |
1151 | } else { | |
1152 | tty_insert_flip_char( | |
1153 | tty, 0, | |
1154 | TTY_NORMAL); | |
1155 | info->icount.rx++; | |
1156 | } | |
1157 | } else { | |
1158 | tty_insert_flip_char(tty, 0, | |
1159 | TTY_NORMAL); | |
1160 | info->icount.rx++; | |
1161 | } | |
1162 | } else { | |
1163 | /* there was a software buffer | |
1164 | overrun and nothing could be | |
1165 | done about it!!! */ | |
1166 | info->icount.buf_overrun++; | |
1167 | info->idle_stats.overruns++; | |
1168 | } | |
1169 | } else { /* normal character reception */ | |
1170 | /* load # chars available from the chip */ | |
db05c3b1 | 1171 | char_count = readb(base_addr + |
02f1175c | 1172 | (CyRDCR << index)); |
e941027f JS |
1173 | |
1174 | #ifdef CY_ENABLE_MONITORING | |
02f1175c JS |
1175 | ++info->mon.int_count; |
1176 | info->mon.char_count += char_count; | |
1177 | if (char_count > info->mon.char_max) | |
1178 | info->mon.char_max = char_count; | |
1179 | info->mon.char_last = char_count; | |
e941027f | 1180 | #endif |
02f1175c JS |
1181 | len = tty_buffer_request_room(tty, char_count); |
1182 | while (len--) { | |
db05c3b1 | 1183 | data = readb(base_addr + |
02f1175c JS |
1184 | (CyRDSR << index)); |
1185 | tty_insert_flip_char(tty, data, | |
1186 | TTY_NORMAL); | |
1187 | info->idle_stats.recv_bytes++; | |
1188 | info->icount.rx++; | |
e941027f | 1189 | #ifdef CY_16Y_HACK |
02f1175c | 1190 | udelay(10L); |
e941027f | 1191 | #endif |
02f1175c JS |
1192 | } |
1193 | info->idle_stats.recv_idle = jiffies; | |
1194 | } | |
1195 | tty_schedule_flip(tty); | |
e941027f | 1196 | } |
02f1175c JS |
1197 | /* end of service */ |
1198 | cy_writeb(base_addr + (CyRIR << index), (save_xir & 0x3f)); | |
1199 | cy_writeb(base_addr + (CyCAR << index), (save_car)); | |
1200 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1201 | } |
1202 | ||
02f1175c JS |
1203 | if (status & CySRTransmit) { /* transmission interrupt */ |
1204 | /* Since we only get here when the transmit buffer | |
1205 | is empty, we know we can always stuff a dozen | |
1206 | characters. */ | |
e941027f | 1207 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1208 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
1209 | #endif |
1210 | ||
02f1175c JS |
1211 | /* determine the channel & change to that context */ |
1212 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1213 | save_xir = (u_char) readb(base_addr + (CyTIR << index)); |
02f1175c JS |
1214 | channel = (u_short) (save_xir & CyIRChannel); |
1215 | i = channel + chip * 4 + cinfo->first_line; | |
db05c3b1 | 1216 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1217 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1218 | ||
1219 | /* validate the port# (as configured and open) */ | |
1220 | if ((i < 0) || (NR_PORTS <= i)) { | |
1221 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1222 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1223 | ~CyTxRdy); |
1224 | goto txend; | |
e941027f | 1225 | } |
02f1175c | 1226 | info = &cy_port[i]; |
02f1175c JS |
1227 | if (info->tty == 0) { |
1228 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1229 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1230 | ~CyTxRdy); |
1231 | goto txdone; | |
e941027f | 1232 | } |
02f1175c JS |
1233 | |
1234 | /* load the on-chip space for outbound data */ | |
1235 | char_count = info->xmit_fifo_size; | |
1236 | ||
1237 | if (info->x_char) { /* send special char */ | |
1238 | outch = info->x_char; | |
1239 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1240 | char_count--; | |
1241 | info->icount.tx++; | |
1242 | info->x_char = 0; | |
e941027f | 1243 | } |
02f1175c JS |
1244 | |
1245 | if (info->breakon || info->breakoff) { | |
1246 | if (info->breakon) { | |
1247 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1248 | cy_writeb(base_addr + (CyTDR << index), 0x81); | |
1249 | info->breakon = 0; | |
1250 | char_count -= 2; | |
1251 | } | |
1252 | if (info->breakoff) { | |
1253 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1254 | cy_writeb(base_addr + (CyTDR << index), 0x83); | |
1255 | info->breakoff = 0; | |
1256 | char_count -= 2; | |
1257 | } | |
e941027f | 1258 | } |
02f1175c JS |
1259 | |
1260 | while (char_count-- > 0) { | |
1261 | if (!info->xmit_cnt) { | |
db05c3b1 | 1262 | if (readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1263 | CyTxMpty) { |
1264 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1265 | readb(base_addr + |
02f1175c JS |
1266 | (CySRER << index)) & |
1267 | ~CyTxMpty); | |
1268 | } else { | |
1269 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1270 | (readb(base_addr + |
02f1175c JS |
1271 | (CySRER << index)) & |
1272 | ~CyTxRdy) | CyTxMpty); | |
1273 | } | |
1274 | goto txdone; | |
1275 | } | |
1276 | if (info->xmit_buf == 0) { | |
1277 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1278 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1279 | ~CyTxRdy); |
1280 | goto txdone; | |
1281 | } | |
1282 | if (info->tty->stopped || info->tty->hw_stopped) { | |
1283 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1284 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1285 | ~CyTxRdy); |
1286 | goto txdone; | |
1287 | } | |
1288 | /* Because the Embedded Transmit Commands have | |
1289 | been enabled, we must check to see if the | |
1290 | escape character, NULL, is being sent. If it | |
1291 | is, we must ensure that there is room for it | |
1292 | to be doubled in the output stream. Therefore | |
1293 | we no longer advance the pointer when the | |
1294 | character is fetched, but rather wait until | |
1295 | after the check for a NULL output character. | |
1296 | This is necessary because there may not be | |
1297 | room for the two chars needed to send a NULL.) | |
1298 | */ | |
1299 | outch = info->xmit_buf[info->xmit_tail]; | |
1300 | if (outch) { | |
1301 | info->xmit_cnt--; | |
1302 | info->xmit_tail = (info->xmit_tail + 1) & | |
1303 | (SERIAL_XMIT_SIZE - 1); | |
1304 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1305 | info->icount.tx++; | |
1306 | } else { | |
1307 | if (char_count > 1) { | |
1308 | info->xmit_cnt--; | |
1309 | info->xmit_tail = (info->xmit_tail + 1)& | |
1310 | (SERIAL_XMIT_SIZE - 1); | |
1311 | cy_writeb(base_addr + (CyTDR << index), | |
1312 | outch); | |
1313 | cy_writeb(base_addr + (CyTDR << index), | |
1314 | 0); | |
1315 | info->icount.tx++; | |
1316 | char_count--; | |
1317 | } else { | |
1318 | } | |
1319 | } | |
e941027f | 1320 | } |
e941027f JS |
1321 | |
1322 | txdone: | |
02f1175c JS |
1323 | if (info->xmit_cnt < WAKEUP_CHARS) { |
1324 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1325 | } | |
e941027f | 1326 | txend: |
02f1175c JS |
1327 | /* end of service */ |
1328 | cy_writeb(base_addr + (CyTIR << index), (save_xir & 0x3f)); | |
1329 | cy_writeb(base_addr + (CyCAR << index), (save_car)); | |
1330 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1331 | } |
1332 | ||
02f1175c | 1333 | if (status & CySRModem) { /* modem interrupt */ |
e941027f | 1334 | |
02f1175c JS |
1335 | /* determine the channel & change to that context */ |
1336 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1337 | save_xir = (u_char) readb(base_addr + (CyMIR << index)); |
02f1175c JS |
1338 | channel = (u_short) (save_xir & CyIRChannel); |
1339 | info = &cy_port[channel + chip * 4 + cinfo->first_line]; | |
db05c3b1 | 1340 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1341 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1342 | ||
db05c3b1 JS |
1343 | mdm_change = readb(base_addr + (CyMISR << index)); |
1344 | mdm_status = readb(base_addr + (CyMSVR1 << index)); | |
02f1175c JS |
1345 | |
1346 | if (info->tty == 0) { /* no place for data, ignore it */ | |
1347 | ; | |
1348 | } else { | |
1349 | if (mdm_change & CyANY_DELTA) { | |
1350 | /* For statistics only */ | |
1351 | if (mdm_change & CyDCD) | |
1352 | info->icount.dcd++; | |
1353 | if (mdm_change & CyCTS) | |
1354 | info->icount.cts++; | |
1355 | if (mdm_change & CyDSR) | |
1356 | info->icount.dsr++; | |
1357 | if (mdm_change & CyRI) | |
1358 | info->icount.rng++; | |
1359 | ||
1360 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
e941027f | 1361 | } |
02f1175c JS |
1362 | |
1363 | if ((mdm_change & CyDCD) && | |
1364 | (info->flags & ASYNC_CHECK_CD)) { | |
1365 | if (mdm_status & CyDCD) { | |
1366 | cy_sched_event(info, | |
1367 | Cy_EVENT_OPEN_WAKEUP); | |
1368 | } else { | |
1369 | cy_sched_event(info, Cy_EVENT_HANGUP); | |
1370 | } | |
1371 | } | |
1372 | if ((mdm_change & CyCTS) && | |
1373 | (info->flags & ASYNC_CTS_FLOW)) { | |
1374 | if (info->tty->hw_stopped) { | |
1375 | if (mdm_status & CyCTS) { | |
1376 | /* cy_start isn't used | |
1377 | because... !!! */ | |
1378 | info->tty->hw_stopped = 0; | |
1379 | cy_writeb(base_addr + | |
1380 | (CySRER << index), | |
db05c3b1 | 1381 | readb(base_addr + |
02f1175c JS |
1382 | (CySRER << |
1383 | index))| | |
1384 | CyTxRdy); | |
1385 | cy_sched_event(info, | |
1386 | Cy_EVENT_WRITE_WAKEUP); | |
1387 | } | |
1388 | } else { | |
1389 | if (!(mdm_status & CyCTS)) { | |
1390 | /* cy_stop isn't used | |
1391 | because ... !!! */ | |
1392 | info->tty->hw_stopped = 1; | |
1393 | cy_writeb(base_addr + | |
1394 | (CySRER << index), | |
db05c3b1 | 1395 | readb(base_addr + |
02f1175c JS |
1396 | (CySRER << |
1397 | index)) & | |
1398 | ~CyTxRdy); | |
1399 | } | |
1400 | } | |
1401 | } | |
1402 | if (mdm_change & CyDSR) { | |
1403 | } | |
1404 | if (mdm_change & CyRI) { | |
e941027f | 1405 | } |
e941027f | 1406 | } |
02f1175c JS |
1407 | /* end of service */ |
1408 | cy_writeb(base_addr + (CyMIR << index), (save_xir & 0x3f)); | |
1409 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
1410 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1411 | } |
1412 | } | |
1413 | ||
1da177e4 LT |
1414 | /* The real interrupt service routine is called |
1415 | whenever the card wants its hand held--chars | |
1416 | received, out buffer empty, modem change, etc. | |
1417 | */ | |
02f1175c | 1418 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 1419 | { |
02f1175c JS |
1420 | int status; |
1421 | struct cyclades_card *cinfo; | |
1422 | void __iomem *base_addr, *card_base_addr; | |
1423 | int chip; | |
1424 | int index; | |
1425 | int too_many; | |
1426 | int had_work; | |
1427 | ||
1428 | if ((cinfo = (struct cyclades_card *)dev_id) == 0) { | |
1da177e4 | 1429 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1430 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",irq); |
1da177e4 | 1431 | #endif |
02f1175c JS |
1432 | return IRQ_NONE; /* spurious interrupt */ |
1433 | } | |
1434 | ||
1435 | card_base_addr = cinfo->base_addr; | |
1436 | index = cinfo->bus_index; | |
1437 | ||
f1e83c6c JS |
1438 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
1439 | if (unlikely(card_base_addr == NULL)) | |
1440 | return IRQ_HANDLED; | |
1441 | ||
02f1175c JS |
1442 | /* This loop checks all chips in the card. Make a note whenever |
1443 | _any_ chip had some work to do, as this is considered an | |
1444 | indication that there will be more to do. Only when no chip | |
1445 | has any work does this outermost loop exit. | |
1446 | */ | |
1447 | do { | |
1448 | had_work = 0; | |
1449 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
1450 | base_addr = cinfo->base_addr + | |
1451 | (cy_chip_offset[chip] << index); | |
1452 | too_many = 0; | |
db05c3b1 | 1453 | while ((status = readb(base_addr + |
02f1175c JS |
1454 | (CySVRR << index))) != 0x00) { |
1455 | had_work++; | |
1456 | /* The purpose of the following test is to ensure that | |
1457 | no chip can monopolize the driver. This forces the | |
1458 | chips to be checked in a round-robin fashion (after | |
1459 | draining each of a bunch (1000) of characters). | |
1460 | */ | |
1461 | if (1000 < too_many++) { | |
1462 | break; | |
1463 | } | |
1464 | cyy_intr_chip(cinfo, chip, base_addr, status, | |
1465 | index); | |
1466 | } | |
1467 | } | |
1468 | } while (had_work); | |
1469 | ||
1470 | /* clear interrupts */ | |
1471 | spin_lock(&cinfo->card_lock); | |
1472 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
1473 | /* Cy_ClrIntr is 0x1800 */ | |
1474 | spin_unlock(&cinfo->card_lock); | |
1475 | return IRQ_HANDLED; | |
1476 | } /* cyy_interrupt */ | |
1da177e4 LT |
1477 | |
1478 | /***********************************************************/ | |
1479 | /********* End of block of Cyclom-Y specific code **********/ | |
1480 | /******** Start of block of Cyclades-Z specific code *********/ | |
1481 | /***********************************************************/ | |
1482 | ||
1483 | static int | |
02f1175c | 1484 | cyz_fetch_msg(struct cyclades_card *cinfo, |
1a86b5e3 | 1485 | __u32 * channel, __u8 * cmd, __u32 * param) |
1da177e4 | 1486 | { |
02f1175c JS |
1487 | struct FIRM_ID __iomem *firm_id; |
1488 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1489 | struct BOARD_CTRL __iomem *board_ctrl; | |
1490 | unsigned long loc_doorbell; | |
1491 | ||
1492 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1493 | if (!ISZLOADED(*cinfo)) { | |
096dcfce | 1494 | return -1; |
02f1175c | 1495 | } |
db05c3b1 | 1496 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1497 | board_ctrl = &zfw_ctrl->board_ctrl; |
1498 | ||
db05c3b1 | 1499 | loc_doorbell = readl(&((struct RUNTIME_9060 __iomem *) |
02f1175c JS |
1500 | (cinfo->ctl_addr))->loc_doorbell); |
1501 | if (loc_doorbell) { | |
1502 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
1503 | *channel = readl(&board_ctrl->fwcmd_channel); |
1504 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
02f1175c JS |
1505 | cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> |
1506 | loc_doorbell, 0xffffffff); | |
1507 | return 1; | |
1508 | } | |
1509 | return 0; | |
1510 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
1511 | |
1512 | static int | |
02f1175c | 1513 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 1514 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 1515 | { |
02f1175c JS |
1516 | struct FIRM_ID __iomem *firm_id; |
1517 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1518 | struct BOARD_CTRL __iomem *board_ctrl; | |
1a86b5e3 | 1519 | __u32 __iomem *pci_doorbell; |
02f1175c JS |
1520 | int index; |
1521 | ||
1522 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1523 | if (!ISZLOADED(*cinfo)) { | |
096dcfce | 1524 | return -1; |
02f1175c | 1525 | } |
db05c3b1 | 1526 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1527 | board_ctrl = &zfw_ctrl->board_ctrl; |
1528 | ||
1529 | index = 0; | |
1530 | pci_doorbell = | |
1531 | &((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->pci_doorbell; | |
db05c3b1 | 1532 | while ((readl(pci_doorbell) & 0xff) != 0) { |
02f1175c | 1533 | if (index++ == 1000) { |
db05c3b1 | 1534 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
1535 | } |
1536 | udelay(50L); | |
1537 | } | |
1538 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
1539 | cy_writel(&board_ctrl->hcmd_param, param); | |
1540 | cy_writel(pci_doorbell, (long)cmd); | |
1541 | ||
096dcfce | 1542 | return 0; |
02f1175c | 1543 | } /* cyz_issue_cmd */ |
1da177e4 LT |
1544 | |
1545 | static void | |
ad39c300 JS |
1546 | cyz_handle_rx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
1547 | struct BUF_CTRL __iomem *buf_ctrl) | |
1da177e4 | 1548 | { |
875b206b | 1549 | struct cyclades_card *cinfo = info->card; |
02f1175c | 1550 | struct tty_struct *tty = info->tty; |
ad39c300 | 1551 | int char_count; |
02f1175c | 1552 | int len; |
1da177e4 | 1553 | #ifdef BLOCKMOVE |
ce71b0ff | 1554 | unsigned char *buf; |
1da177e4 | 1555 | #else |
02f1175c | 1556 | char data; |
1da177e4 | 1557 | #endif |
ad39c300 | 1558 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 1559 | |
db05c3b1 JS |
1560 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
1561 | rx_put = readl(&buf_ctrl->rx_put); | |
1562 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
1563 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
1564 | if (rx_put >= rx_get) |
1565 | char_count = rx_put - rx_get; | |
1566 | else | |
1567 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 1568 | |
02f1175c | 1569 | if (char_count) { |
1da177e4 | 1570 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
1571 | info->mon.int_count++; |
1572 | info->mon.char_count += char_count; | |
1573 | if (char_count > info->mon.char_max) | |
1574 | info->mon.char_max = char_count; | |
1575 | info->mon.char_last = char_count; | |
1da177e4 | 1576 | #endif |
02f1175c JS |
1577 | if (tty == 0) { |
1578 | /* flush received characters */ | |
1579 | new_rx_get = (new_rx_get + char_count) & | |
1580 | (rx_bufsize - 1); | |
1581 | info->rflush_count++; | |
1582 | } else { | |
1da177e4 | 1583 | #ifdef BLOCKMOVE |
02f1175c JS |
1584 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
1585 | for performance, but because of buffer boundaries, there | |
1586 | may be several steps to the operation */ | |
ce71b0ff JS |
1587 | while (1) { |
1588 | len = tty_prepare_flip_string(tty, &buf, | |
1589 | char_count); | |
1590 | if (!len) | |
1591 | break; | |
1592 | ||
1593 | len = min_t(unsigned int, min(len, char_count), | |
1594 | rx_bufsize - new_rx_get); | |
1595 | ||
1596 | memcpy_fromio(buf, cinfo->base_addr + | |
1597 | rx_bufaddr + new_rx_get, len); | |
1598 | ||
1599 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 1600 | (rx_bufsize - 1); |
ce71b0ff JS |
1601 | char_count -= len; |
1602 | info->icount.rx += len; | |
1603 | info->idle_stats.recv_bytes += len; | |
02f1175c | 1604 | } |
1da177e4 | 1605 | #else |
02f1175c JS |
1606 | len = tty_buffer_request_room(tty, char_count); |
1607 | while (len--) { | |
db05c3b1 | 1608 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c JS |
1609 | new_rx_get); |
1610 | new_rx_get = (new_rx_get + 1)& (rx_bufsize - 1); | |
1611 | tty_insert_flip_char(tty, data, TTY_NORMAL); | |
1612 | info->idle_stats.recv_bytes++; | |
1613 | info->icount.rx++; | |
1614 | } | |
1da177e4 LT |
1615 | #endif |
1616 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1617 | /* Recalculate the number of chars in the RX buffer and issue |
1618 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1619 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1620 | if (rx_put >= rx_get) |
1621 | char_count = rx_put - rx_get; | |
1622 | else | |
1623 | char_count = rx_put - rx_get + rx_bufsize; | |
db05c3b1 | 1624 | if (char_count >= (int)readl(&buf_ctrl->rx_threshold)) { |
02f1175c JS |
1625 | cy_sched_event(info, Cy_EVENT_Z_RX_FULL); |
1626 | } | |
1da177e4 | 1627 | #endif |
02f1175c JS |
1628 | info->idle_stats.recv_idle = jiffies; |
1629 | tty_schedule_flip(tty); | |
1630 | } | |
1631 | /* Update rx_get */ | |
1632 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1633 | } |
1da177e4 LT |
1634 | } |
1635 | ||
1636 | static void | |
ad39c300 JS |
1637 | cyz_handle_tx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
1638 | struct BUF_CTRL __iomem *buf_ctrl) | |
1da177e4 | 1639 | { |
875b206b | 1640 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1641 | struct tty_struct *tty = info->tty; |
1642 | char data; | |
ad39c300 | 1643 | int char_count; |
1da177e4 | 1644 | #ifdef BLOCKMOVE |
02f1175c | 1645 | int small_count; |
1da177e4 | 1646 | #endif |
ad39c300 | 1647 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1648 | |
02f1175c JS |
1649 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1650 | return; | |
1da177e4 | 1651 | |
db05c3b1 JS |
1652 | tx_get = readl(&buf_ctrl->tx_get); |
1653 | tx_put = readl(&buf_ctrl->tx_put); | |
1654 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1655 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1656 | if (tx_put >= tx_get) |
1657 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1658 | else | |
1659 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1660 | |
02f1175c | 1661 | if (char_count) { |
1da177e4 | 1662 | |
02f1175c JS |
1663 | if (tty == 0) { |
1664 | goto ztxdone; | |
1665 | } | |
1da177e4 | 1666 | |
02f1175c JS |
1667 | if (info->x_char) { /* send special char */ |
1668 | data = info->x_char; | |
1da177e4 | 1669 | |
02f1175c JS |
1670 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1671 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1672 | info->x_char = 0; | |
1673 | char_count--; | |
1674 | info->icount.tx++; | |
02f1175c | 1675 | } |
1da177e4 | 1676 | #ifdef BLOCKMOVE |
02f1175c JS |
1677 | while (0 < (small_count = min_t(unsigned int, |
1678 | tx_bufsize - tx_put, min_t(unsigned int, | |
1679 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1680 | min_t(unsigned int, info->xmit_cnt, | |
1681 | char_count))))) { | |
1682 | ||
1683 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1684 | tx_put), | |
1685 | &info->xmit_buf[info->xmit_tail], | |
1686 | small_count); | |
1687 | ||
1688 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1689 | char_count -= small_count; | |
1690 | info->icount.tx += small_count; | |
1691 | info->xmit_cnt -= small_count; | |
1692 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1693 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1694 | } |
1da177e4 | 1695 | #else |
02f1175c JS |
1696 | while (info->xmit_cnt && char_count) { |
1697 | data = info->xmit_buf[info->xmit_tail]; | |
1698 | info->xmit_cnt--; | |
1699 | info->xmit_tail = (info->xmit_tail + 1) & | |
1700 | (SERIAL_XMIT_SIZE - 1); | |
1701 | ||
1702 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1703 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1704 | char_count--; | |
1705 | info->icount.tx++; | |
02f1175c | 1706 | } |
1da177e4 | 1707 | #endif |
02f1175c JS |
1708 | ztxdone: |
1709 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
1710 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1711 | } | |
1712 | /* Update tx_put */ | |
1713 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1714 | } |
1da177e4 LT |
1715 | } |
1716 | ||
02f1175c | 1717 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1718 | { |
02f1175c JS |
1719 | struct tty_struct *tty; |
1720 | struct cyclades_port *info; | |
ad39c300 JS |
1721 | static struct FIRM_ID __iomem *firm_id; |
1722 | static struct ZFW_CTRL __iomem *zfw_ctrl; | |
1723 | static struct BOARD_CTRL __iomem *board_ctrl; | |
1724 | static struct CH_CTRL __iomem *ch_ctrl; | |
1725 | static struct BUF_CTRL __iomem *buf_ctrl; | |
1a86b5e3 KK |
1726 | __u32 channel; |
1727 | __u8 cmd; | |
1728 | __u32 param; | |
1729 | __u32 hw_ver, fw_ver; | |
02f1175c JS |
1730 | int special_count; |
1731 | int delta_count; | |
1732 | ||
1733 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
db05c3b1 | 1734 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 1735 | board_ctrl = &zfw_ctrl->board_ctrl; |
db05c3b1 JS |
1736 | fw_ver = readl(&board_ctrl->fw_version); |
1737 | hw_ver = readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> | |
02f1175c JS |
1738 | mail_box_0); |
1739 | ||
1740 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1741 | special_count = 0; | |
1742 | delta_count = 0; | |
1743 | info = &cy_port[channel + cinfo->first_line]; | |
1744 | if ((tty = info->tty) == 0) { | |
1745 | continue; | |
1da177e4 | 1746 | } |
02f1175c JS |
1747 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
1748 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
1749 | ||
1750 | switch (cmd) { | |
1751 | case C_CM_PR_ERROR: | |
1752 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1753 | info->icount.rx++; | |
1754 | special_count++; | |
1755 | break; | |
1756 | case C_CM_FR_ERROR: | |
1757 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1758 | info->icount.rx++; | |
1759 | special_count++; | |
1760 | break; | |
1761 | case C_CM_RXBRK: | |
1762 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1763 | info->icount.rx++; | |
1764 | special_count++; | |
1765 | break; | |
1766 | case C_CM_MDCD: | |
1767 | info->icount.dcd++; | |
1768 | delta_count++; | |
1769 | if (info->flags & ASYNC_CHECK_CD) { | |
1770 | if ((fw_ver > 241 ? ((u_long) param) : | |
db05c3b1 | 1771 | readl(&ch_ctrl->rs_status)) & |
02f1175c JS |
1772 | C_RS_DCD) { |
1773 | cy_sched_event(info, | |
1774 | Cy_EVENT_OPEN_WAKEUP); | |
1775 | } else { | |
1776 | cy_sched_event(info, Cy_EVENT_HANGUP); | |
1777 | } | |
1778 | } | |
1779 | break; | |
1780 | case C_CM_MCTS: | |
1781 | info->icount.cts++; | |
1782 | delta_count++; | |
1783 | break; | |
1784 | case C_CM_MRI: | |
1785 | info->icount.rng++; | |
1786 | delta_count++; | |
1787 | break; | |
1788 | case C_CM_MDSR: | |
1789 | info->icount.dsr++; | |
1790 | delta_count++; | |
1791 | break; | |
1da177e4 | 1792 | #ifdef Z_WAKE |
02f1175c JS |
1793 | case C_CM_IOCTLW: |
1794 | cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP); | |
1795 | break; | |
1da177e4 LT |
1796 | #endif |
1797 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1798 | case C_CM_RXHIWM: |
1799 | case C_CM_RXNNDT: | |
1800 | case C_CM_INTBACK2: | |
1801 | /* Reception Interrupt */ | |
1da177e4 | 1802 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1803 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1804 | "port %ld\n", info->card, channel); | |
1da177e4 | 1805 | #endif |
02f1175c JS |
1806 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); |
1807 | break; | |
1808 | case C_CM_TXBEMPTY: | |
1809 | case C_CM_TXLOWWM: | |
1810 | case C_CM_INTBACK: | |
1811 | /* Transmission Interrupt */ | |
1da177e4 | 1812 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1813 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1814 | "port %ld\n", info->card, channel); | |
1da177e4 | 1815 | #endif |
02f1175c JS |
1816 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); |
1817 | break; | |
1818 | #endif /* CONFIG_CYZ_INTR */ | |
1819 | case C_CM_FATAL: | |
1820 | /* should do something with this !!! */ | |
1821 | break; | |
1822 | default: | |
1823 | break; | |
1824 | } | |
1825 | if (delta_count) | |
1826 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
1827 | if (special_count) | |
1828 | tty_schedule_flip(tty); | |
1da177e4 | 1829 | } |
1da177e4 LT |
1830 | } |
1831 | ||
1832 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1833 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1834 | { |
02f1175c | 1835 | struct cyclades_card *cinfo; |
1da177e4 | 1836 | |
02f1175c | 1837 | if ((cinfo = (struct cyclades_card *)dev_id) == 0) { |
1da177e4 | 1838 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1839 | printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n",irq); |
1da177e4 | 1840 | #endif |
02f1175c JS |
1841 | return IRQ_NONE; /* spurious interrupt */ |
1842 | } | |
1da177e4 | 1843 | |
02f1175c | 1844 | if (!ISZLOADED(*cinfo)) { |
1da177e4 | 1845 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1846 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1847 | "(IRQ%d).\n", irq); | |
1da177e4 | 1848 | #endif |
02f1175c JS |
1849 | return IRQ_NONE; |
1850 | } | |
1da177e4 | 1851 | |
02f1175c JS |
1852 | /* Handle the interrupts */ |
1853 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1854 | |
02f1175c JS |
1855 | return IRQ_HANDLED; |
1856 | } /* cyz_interrupt */ | |
1da177e4 | 1857 | |
02f1175c | 1858 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1859 | { |
02f1175c | 1860 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1861 | struct cyclades_card *card = info->card; |
02f1175c | 1862 | int retval; |
875b206b | 1863 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1864 | unsigned long flags; |
1865 | ||
1866 | CY_LOCK(info, flags); | |
875b206b | 1867 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1868 | if (retval != 0) { |
21719191 | 1869 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1870 | info->line, retval); |
1871 | } | |
02f1175c | 1872 | CY_UNLOCK(info, flags); |
1da177e4 LT |
1873 | } |
1874 | ||
02f1175c | 1875 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1876 | |
02f1175c | 1877 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1878 | { |
02f1175c JS |
1879 | struct cyclades_card *cinfo; |
1880 | struct cyclades_port *info; | |
1881 | struct tty_struct *tty; | |
ad39c300 JS |
1882 | static struct FIRM_ID *firm_id; |
1883 | static struct ZFW_CTRL *zfw_ctrl; | |
1884 | static struct BOARD_CTRL *board_ctrl; | |
1885 | static struct CH_CTRL *ch_ctrl; | |
1886 | static struct BUF_CTRL *buf_ctrl; | |
b7050906 | 1887 | unsigned long expires = jiffies + HZ; |
02f1175c | 1888 | int card, port; |
1da177e4 | 1889 | |
02f1175c JS |
1890 | for (card = 0; card < NR_CARDS; card++) { |
1891 | cinfo = &cy_card[card]; | |
1892 | ||
1893 | if (!IS_CYC_Z(*cinfo)) | |
1894 | continue; | |
1895 | if (!ISZLOADED(*cinfo)) | |
1896 | continue; | |
1897 | ||
1898 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1899 | zfw_ctrl = cinfo->base_addr + | |
db05c3b1 | 1900 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 1901 | board_ctrl = &(zfw_ctrl->board_ctrl); |
1da177e4 LT |
1902 | |
1903 | /* Skip first polling cycle to avoid racing conditions with the FW */ | |
02f1175c | 1904 | if (!cinfo->intr_enabled) { |
db05c3b1 | 1905 | cinfo->nports = (int)readl(&board_ctrl->n_channel); |
02f1175c JS |
1906 | cinfo->intr_enabled = 1; |
1907 | continue; | |
1908 | } | |
1da177e4 | 1909 | |
02f1175c | 1910 | cyz_handle_cmd(cinfo); |
1da177e4 | 1911 | |
02f1175c JS |
1912 | for (port = 0; port < cinfo->nports; port++) { |
1913 | info = &cy_port[port + cinfo->first_line]; | |
1914 | tty = info->tty; | |
1915 | ch_ctrl = &(zfw_ctrl->ch_ctrl[port]); | |
1916 | buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); | |
1da177e4 | 1917 | |
02f1175c JS |
1918 | if (!info->throttle) |
1919 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); | |
1920 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); | |
1921 | } | |
1922 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1923 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1924 | } |
b7050906 | 1925 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1926 | } /* cyz_poll */ |
1da177e4 | 1927 | |
02f1175c | 1928 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1929 | |
1930 | /********** End of block of Cyclades-Z specific code *********/ | |
1931 | /***********************************************************/ | |
1932 | ||
1da177e4 LT |
1933 | /* This is called whenever a port becomes active; |
1934 | interrupts are enabled and DTR & RTS are turned on. | |
1935 | */ | |
02f1175c | 1936 | static int startup(struct cyclades_port *info) |
1da177e4 | 1937 | { |
875b206b | 1938 | struct cyclades_card *card; |
02f1175c JS |
1939 | unsigned long flags; |
1940 | int retval = 0; | |
1941 | void __iomem *base_addr; | |
875b206b | 1942 | int chip, channel, index; |
02f1175c | 1943 | unsigned long page; |
1da177e4 | 1944 | |
02f1175c | 1945 | card = info->card; |
875b206b | 1946 | channel = info->line - card->first_line; |
1da177e4 | 1947 | |
02f1175c JS |
1948 | page = get_zeroed_page(GFP_KERNEL); |
1949 | if (!page) | |
1950 | return -ENOMEM; | |
1da177e4 | 1951 | |
02f1175c | 1952 | CY_LOCK(info, flags); |
1da177e4 | 1953 | |
02f1175c JS |
1954 | if (info->flags & ASYNC_INITIALIZED) { |
1955 | free_page(page); | |
1956 | goto errout; | |
1957 | } | |
1da177e4 | 1958 | |
02f1175c JS |
1959 | if (!info->type) { |
1960 | if (info->tty) { | |
1961 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
1962 | } | |
1963 | free_page(page); | |
1964 | goto errout; | |
1965 | } | |
1da177e4 | 1966 | |
02f1175c JS |
1967 | if (info->xmit_buf) |
1968 | free_page(page); | |
1969 | else | |
1970 | info->xmit_buf = (unsigned char *)page; | |
1da177e4 | 1971 | |
02f1175c | 1972 | CY_UNLOCK(info, flags); |
1da177e4 | 1973 | |
02f1175c | 1974 | set_line_char(info); |
1da177e4 | 1975 | |
875b206b | 1976 | if (!IS_CYC_Z(*card)) { |
02f1175c JS |
1977 | chip = channel >> 2; |
1978 | channel &= 0x03; | |
875b206b JS |
1979 | index = card->bus_index; |
1980 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
1981 | |
1982 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
1983 | printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " |
1984 | "base_addr %p\n", | |
1985 | card, chip, channel, base_addr); | |
1da177e4 | 1986 | #endif |
02f1175c | 1987 | CY_LOCK(info, flags); |
1da177e4 | 1988 | |
02f1175c | 1989 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1da177e4 | 1990 | |
02f1175c JS |
1991 | cy_writeb(base_addr + (CyRTPR << index), |
1992 | (info->default_timeout ? info->default_timeout : 0x02)); | |
1993 | /* 10ms rx timeout */ | |
1da177e4 | 1994 | |
02f1175c JS |
1995 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
1996 | index); | |
1da177e4 | 1997 | |
02f1175c JS |
1998 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1999 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); | |
2000 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); | |
1da177e4 LT |
2001 | |
2002 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
2003 | printk(KERN_DEBUG "cyc:startup raising DTR\n"); |
2004 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2005 | readb(base_addr + (CyMSVR1 << index)), |
2006 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 LT |
2007 | #endif |
2008 | ||
02f1175c | 2009 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 2010 | readb(base_addr + (CySRER << index)) | CyRxData); |
02f1175c | 2011 | info->flags |= ASYNC_INITIALIZED; |
1da177e4 | 2012 | |
02f1175c JS |
2013 | if (info->tty) { |
2014 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2015 | } | |
2016 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2017 | info->breakon = info->breakoff = 0; | |
2018 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2019 | info->idle_stats.in_use = | |
2020 | info->idle_stats.recv_idle = | |
2021 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 2022 | |
02f1175c | 2023 | CY_UNLOCK(info, flags); |
1da177e4 | 2024 | |
02f1175c JS |
2025 | } else { |
2026 | struct FIRM_ID __iomem *firm_id; | |
2027 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2028 | struct BOARD_CTRL __iomem *board_ctrl; | |
2029 | struct CH_CTRL __iomem *ch_ctrl; | |
2030 | int retval; | |
1da177e4 | 2031 | |
875b206b | 2032 | base_addr = card->base_addr; |
1da177e4 | 2033 | |
02f1175c | 2034 | firm_id = base_addr + ID_ADDRESS; |
875b206b | 2035 | if (!ISZLOADED(*card)) { |
02f1175c JS |
2036 | return -ENODEV; |
2037 | } | |
1da177e4 | 2038 | |
875b206b | 2039 | zfw_ctrl = card->base_addr + |
db05c3b1 | 2040 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2041 | board_ctrl = &zfw_ctrl->board_ctrl; |
2042 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 LT |
2043 | |
2044 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
2045 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
2046 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 | 2047 | #endif |
02f1175c | 2048 | CY_LOCK(info, flags); |
1da177e4 | 2049 | |
02f1175c | 2050 | cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); |
1da177e4 LT |
2051 | #ifdef Z_WAKE |
2052 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
2053 | cy_writel(&ch_ctrl[channel].intr_enable, |
2054 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
2055 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 2056 | #else |
02f1175c JS |
2057 | cy_writel(&ch_ctrl[channel].intr_enable, |
2058 | C_IN_IOCTLW | C_IN_MDCD); | |
2059 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
2060 | #else |
2061 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
2062 | cy_writel(&ch_ctrl[channel].intr_enable, |
2063 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
2064 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 2065 | #else |
02f1175c JS |
2066 | cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD); |
2067 | #endif /* CONFIG_CYZ_INTR */ | |
2068 | #endif /* Z_WAKE */ | |
2069 | ||
875b206b | 2070 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2071 | if (retval != 0) { |
21719191 JS |
2072 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
2073 | "%x\n", info->line, retval); | |
02f1175c | 2074 | } |
1da177e4 | 2075 | |
02f1175c | 2076 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 2077 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 2078 | if (retval != 0) { |
21719191 JS |
2079 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
2080 | "%x\n", info->line, retval); | |
02f1175c | 2081 | } |
1da177e4 | 2082 | |
02f1175c JS |
2083 | /* set timeout !!! */ |
2084 | /* set RTS and DTR !!! */ | |
2085 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 | 2086 | readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | |
02f1175c | 2087 | C_RS_DTR); |
875b206b | 2088 | retval = cyz_issue_cmd(info->card, channel, |
02f1175c JS |
2089 | C_CM_IOCTLM, 0L); |
2090 | if (retval != 0) { | |
21719191 JS |
2091 | printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was " |
2092 | "%x\n", info->line, retval); | |
02f1175c | 2093 | } |
1da177e4 | 2094 | #ifdef CY_DEBUG_DTR |
21719191 | 2095 | printk(KERN_DEBUG "cyc:startup raising Z DTR\n"); |
1da177e4 LT |
2096 | #endif |
2097 | ||
02f1175c JS |
2098 | /* enable send, recv, modem !!! */ |
2099 | ||
2100 | info->flags |= ASYNC_INITIALIZED; | |
2101 | if (info->tty) { | |
2102 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2103 | } | |
2104 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2105 | info->breakon = info->breakoff = 0; | |
2106 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2107 | info->idle_stats.in_use = | |
2108 | info->idle_stats.recv_idle = | |
2109 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 2110 | |
02f1175c | 2111 | CY_UNLOCK(info, flags); |
1da177e4 | 2112 | } |
1da177e4 LT |
2113 | |
2114 | #ifdef CY_DEBUG_OPEN | |
21719191 | 2115 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
2116 | #endif |
2117 | return 0; | |
2118 | ||
2119 | errout: | |
2120 | CY_UNLOCK(info, flags); | |
2121 | return retval; | |
02f1175c | 2122 | } /* startup */ |
1da177e4 | 2123 | |
02f1175c | 2124 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 2125 | { |
875b206b | 2126 | struct cyclades_card *card; |
02f1175c JS |
2127 | unsigned long flags; |
2128 | void __iomem *base_addr; | |
875b206b | 2129 | int chip, channel, index; |
1da177e4 | 2130 | |
02f1175c | 2131 | card = info->card; |
875b206b JS |
2132 | channel = info->line - card->first_line; |
2133 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2134 | chip = channel >> 2; |
2135 | channel &= 0x03; | |
875b206b JS |
2136 | index = card->bus_index; |
2137 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c JS |
2138 | |
2139 | CY_LOCK(info, flags); | |
2140 | cy_writeb(base_addr + (CyCAR << index), channel); | |
2141 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2142 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
2143 | CY_UNLOCK(info, flags); |
2144 | } else { | |
1da177e4 | 2145 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 2146 | int retval; |
1da177e4 | 2147 | |
02f1175c | 2148 | CY_LOCK(info, flags); |
875b206b | 2149 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 2150 | if (retval != 0) { |
21719191 JS |
2151 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
2152 | "%x\n", info->line, retval); | |
02f1175c JS |
2153 | } |
2154 | CY_UNLOCK(info, flags); | |
2155 | #else /* CONFIG_CYZ_INTR */ | |
2156 | /* Don't have to do anything at this time */ | |
2157 | #endif /* CONFIG_CYZ_INTR */ | |
2158 | } | |
2159 | } /* start_xmit */ | |
1da177e4 LT |
2160 | |
2161 | /* | |
2162 | * This routine shuts down a serial port; interrupts are disabled, | |
2163 | * and DTR is dropped if the hangup on close termio flag is on. | |
2164 | */ | |
02f1175c | 2165 | static void shutdown(struct cyclades_port *info) |
1da177e4 | 2166 | { |
875b206b | 2167 | struct cyclades_card *card; |
02f1175c JS |
2168 | unsigned long flags; |
2169 | void __iomem *base_addr; | |
875b206b | 2170 | int chip, channel, index; |
02f1175c JS |
2171 | |
2172 | if (!(info->flags & ASYNC_INITIALIZED)) { | |
2173 | return; | |
2174 | } | |
2175 | ||
2176 | card = info->card; | |
875b206b JS |
2177 | channel = info->line - card->first_line; |
2178 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2179 | chip = channel >> 2; |
2180 | channel &= 0x03; | |
875b206b JS |
2181 | index = card->bus_index; |
2182 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
2183 | |
2184 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
2185 | printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " |
2186 | "channel %d, base_addr %p\n", | |
2187 | card, chip, channel, base_addr); | |
1da177e4 LT |
2188 | #endif |
2189 | ||
02f1175c JS |
2190 | CY_LOCK(info, flags); |
2191 | ||
2192 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
2193 | wake_up_interruptible(&info->delta_msr_wait); | |
1da177e4 | 2194 | |
02f1175c JS |
2195 | if (info->xmit_buf) { |
2196 | unsigned char *temp; | |
2197 | temp = info->xmit_buf; | |
2198 | info->xmit_buf = NULL; | |
2199 | free_page((unsigned long)temp); | |
2200 | } | |
2201 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
2202 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2203 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); | |
2204 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); | |
1da177e4 | 2205 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2206 | printk(KERN_DEBUG "cyc shutdown dropping DTR\n"); |
2207 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2208 | readb(base_addr + (CyMSVR1 << index)), |
2209 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2210 | #endif |
02f1175c JS |
2211 | } |
2212 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); | |
2213 | /* it may be appropriate to clear _XMIT at | |
2214 | some later date (after testing)!!! */ | |
2215 | ||
2216 | if (info->tty) { | |
2217 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2218 | } | |
2219 | info->flags &= ~ASYNC_INITIALIZED; | |
2220 | CY_UNLOCK(info, flags); | |
2221 | } else { | |
2222 | struct FIRM_ID __iomem *firm_id; | |
2223 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2224 | struct BOARD_CTRL __iomem *board_ctrl; | |
2225 | struct CH_CTRL __iomem *ch_ctrl; | |
2226 | int retval; | |
2227 | ||
875b206b | 2228 | base_addr = card->base_addr; |
1da177e4 | 2229 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2230 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
2231 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 LT |
2232 | #endif |
2233 | ||
02f1175c | 2234 | firm_id = base_addr + ID_ADDRESS; |
875b206b | 2235 | if (!ISZLOADED(*card)) { |
02f1175c JS |
2236 | return; |
2237 | } | |
1da177e4 | 2238 | |
875b206b | 2239 | zfw_ctrl = card->base_addr + |
db05c3b1 | 2240 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2241 | board_ctrl = &zfw_ctrl->board_ctrl; |
2242 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 | 2243 | |
02f1175c | 2244 | CY_LOCK(info, flags); |
1da177e4 | 2245 | |
02f1175c JS |
2246 | if (info->xmit_buf) { |
2247 | unsigned char *temp; | |
2248 | temp = info->xmit_buf; | |
2249 | info->xmit_buf = NULL; | |
2250 | free_page((unsigned long)temp); | |
1da177e4 | 2251 | } |
02f1175c JS |
2252 | |
2253 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2254 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 | 2255 | (__u32)(readl(&ch_ctrl[channel].rs_control) & |
02f1175c | 2256 | ~(C_RS_RTS | C_RS_DTR))); |
875b206b | 2257 | retval = cyz_issue_cmd(info->card, channel, |
02f1175c JS |
2258 | C_CM_IOCTLM, 0L); |
2259 | if (retval != 0) { | |
21719191 JS |
2260 | printk(KERN_ERR"cyc:shutdown retval on ttyC%d " |
2261 | "was %x\n", info->line, retval); | |
02f1175c | 2262 | } |
1da177e4 | 2263 | #ifdef CY_DEBUG_DTR |
21719191 | 2264 | printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n"); |
1da177e4 | 2265 | #endif |
02f1175c | 2266 | } |
1da177e4 | 2267 | |
02f1175c JS |
2268 | if (info->tty) { |
2269 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2270 | } | |
2271 | info->flags &= ~ASYNC_INITIALIZED; | |
2272 | ||
2273 | CY_UNLOCK(info, flags); | |
2274 | } | |
1da177e4 LT |
2275 | |
2276 | #ifdef CY_DEBUG_OPEN | |
21719191 | 2277 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 2278 | #endif |
02f1175c | 2279 | } /* shutdown */ |
1da177e4 LT |
2280 | |
2281 | /* | |
2282 | * ------------------------------------------------------------ | |
2283 | * cy_open() and friends | |
2284 | * ------------------------------------------------------------ | |
2285 | */ | |
2286 | ||
2287 | static int | |
02f1175c JS |
2288 | block_til_ready(struct tty_struct *tty, struct file *filp, |
2289 | struct cyclades_port *info) | |
1da177e4 | 2290 | { |
02f1175c JS |
2291 | DECLARE_WAITQUEUE(wait, current); |
2292 | struct cyclades_card *cinfo; | |
2293 | unsigned long flags; | |
2294 | int chip, channel, index; | |
2295 | int retval; | |
2296 | void __iomem *base_addr; | |
2297 | ||
875b206b | 2298 | cinfo = info->card; |
02f1175c JS |
2299 | channel = info->line - cinfo->first_line; |
2300 | ||
2301 | /* | |
2302 | * If the device is in the middle of being closed, then block | |
2303 | * until it's done, and then try again. | |
2304 | */ | |
2305 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2c7fea99 JS |
2306 | wait_event_interruptible(info->close_wait, |
2307 | !(info->flags & ASYNC_CLOSING)); | |
096dcfce | 2308 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
1da177e4 | 2309 | } |
02f1175c JS |
2310 | |
2311 | /* | |
2312 | * If non-blocking mode is set, then make the check up front | |
2313 | * and then exit. | |
2314 | */ | |
2315 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { | |
2316 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2317 | return 0; | |
2318 | } | |
2319 | ||
2320 | /* | |
2321 | * Block waiting for the carrier detect and the line to become | |
2322 | * free (i.e., not in use by the callout). While we are in | |
2323 | * this loop, info->count is dropped by one, so that | |
2324 | * cy_close() knows when to free things. We restore it upon | |
2325 | * exit, either normal or abnormal. | |
2326 | */ | |
2327 | retval = 0; | |
2328 | add_wait_queue(&info->open_wait, &wait); | |
1da177e4 | 2329 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2330 | printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, " |
2331 | "count = %d\n", info->line, info->count); | |
1da177e4 | 2332 | #endif |
02f1175c JS |
2333 | CY_LOCK(info, flags); |
2334 | if (!tty_hung_up_p(filp)) | |
2335 | info->count--; | |
2336 | CY_UNLOCK(info, flags); | |
1da177e4 | 2337 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
2338 | printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to " |
2339 | "%d\n", current->pid, info->count); | |
1da177e4 | 2340 | #endif |
02f1175c JS |
2341 | info->blocked_open++; |
2342 | ||
2343 | if (!IS_CYC_Z(*cinfo)) { | |
2344 | chip = channel >> 2; | |
2345 | channel &= 0x03; | |
2346 | index = cinfo->bus_index; | |
2347 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); | |
2348 | ||
2349 | while (1) { | |
2350 | CY_LOCK(info, flags); | |
2351 | if ((tty->termios->c_cflag & CBAUD)) { | |
2352 | cy_writeb(base_addr + (CyCAR << index), | |
2353 | (u_char) channel); | |
2354 | cy_writeb(base_addr + (CyMSVR1 << index), | |
2355 | CyRTS); | |
2356 | cy_writeb(base_addr + (CyMSVR2 << index), | |
2357 | CyDTR); | |
1da177e4 | 2358 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2359 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2360 | "DTR\n"); | |
2361 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2362 | readb(base_addr + (CyMSVR1 << index)), |
2363 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2364 | #endif |
02f1175c JS |
2365 | } |
2366 | CY_UNLOCK(info, flags); | |
1da177e4 | 2367 | |
02f1175c JS |
2368 | set_current_state(TASK_INTERRUPTIBLE); |
2369 | if (tty_hung_up_p(filp) || | |
2370 | !(info->flags & ASYNC_INITIALIZED)) { | |
2371 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2372 | -EAGAIN : -ERESTARTSYS); | |
2373 | break; | |
2374 | } | |
1da177e4 | 2375 | |
02f1175c JS |
2376 | CY_LOCK(info, flags); |
2377 | cy_writeb(base_addr + (CyCAR << index), | |
2378 | (u_char) channel); | |
2379 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || | |
db05c3b1 | 2380 | (readb(base_addr + |
02f1175c JS |
2381 | (CyMSVR1 << index)) & CyDCD))) { |
2382 | CY_UNLOCK(info, flags); | |
2383 | break; | |
2384 | } | |
1da177e4 | 2385 | CY_UNLOCK(info, flags); |
1da177e4 | 2386 | |
02f1175c JS |
2387 | if (signal_pending(current)) { |
2388 | retval = -ERESTARTSYS; | |
2389 | break; | |
2390 | } | |
1da177e4 | 2391 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2392 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2393 | "ttyC%d, count = %d\n", | |
2394 | info->line, info->count); | |
1da177e4 | 2395 | #endif |
02f1175c | 2396 | schedule(); |
1da177e4 | 2397 | } |
02f1175c JS |
2398 | } else { |
2399 | struct FIRM_ID __iomem *firm_id; | |
2400 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2401 | struct BOARD_CTRL __iomem *board_ctrl; | |
2402 | struct CH_CTRL __iomem *ch_ctrl; | |
2403 | int retval; | |
2404 | ||
2405 | base_addr = cinfo->base_addr; | |
2406 | firm_id = base_addr + ID_ADDRESS; | |
2407 | if (!ISZLOADED(*cinfo)) { | |
cc0a8fbb | 2408 | __set_current_state(TASK_RUNNING); |
02f1175c JS |
2409 | remove_wait_queue(&info->open_wait, &wait); |
2410 | return -EINVAL; | |
2411 | } | |
2412 | ||
db05c3b1 | 2413 | zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr)& 0xfffff); |
02f1175c JS |
2414 | board_ctrl = &zfw_ctrl->board_ctrl; |
2415 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
2416 | ||
2417 | while (1) { | |
2418 | if ((tty->termios->c_cflag & CBAUD)) { | |
2419 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 JS |
2420 | readl(&ch_ctrl[channel].rs_control) | |
2421 | C_RS_RTS | C_RS_DTR); | |
875b206b | 2422 | retval = cyz_issue_cmd(info->card, |
db05c3b1 | 2423 | channel, C_CM_IOCTLM, 0L); |
02f1175c | 2424 | if (retval != 0) { |
21719191 JS |
2425 | printk(KERN_ERR "cyc:block_til_ready " |
2426 | "retval on ttyC%d was %x\n", | |
02f1175c JS |
2427 | info->line, retval); |
2428 | } | |
1da177e4 | 2429 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2430 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2431 | "Z DTR\n"); | |
1da177e4 | 2432 | #endif |
02f1175c | 2433 | } |
1da177e4 | 2434 | |
02f1175c JS |
2435 | set_current_state(TASK_INTERRUPTIBLE); |
2436 | if (tty_hung_up_p(filp) || | |
2437 | !(info->flags & ASYNC_INITIALIZED)) { | |
2438 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2439 | -EAGAIN : -ERESTARTSYS); | |
2440 | break; | |
2441 | } | |
2442 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || | |
db05c3b1 | 2443 | (readl(&ch_ctrl[channel].rs_status) & |
02f1175c JS |
2444 | C_RS_DCD))) { |
2445 | break; | |
2446 | } | |
2447 | if (signal_pending(current)) { | |
2448 | retval = -ERESTARTSYS; | |
2449 | break; | |
2450 | } | |
1da177e4 | 2451 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2452 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2453 | "ttyC%d, count = %d\n", | |
2454 | info->line, info->count); | |
1da177e4 | 2455 | #endif |
02f1175c JS |
2456 | schedule(); |
2457 | } | |
1da177e4 | 2458 | } |
cc0a8fbb | 2459 | __set_current_state(TASK_RUNNING); |
02f1175c JS |
2460 | remove_wait_queue(&info->open_wait, &wait); |
2461 | if (!tty_hung_up_p(filp)) { | |
2462 | info->count++; | |
1da177e4 | 2463 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
2464 | printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing " |
2465 | "count to %d\n", current->pid, info->count); | |
1da177e4 | 2466 | #endif |
02f1175c JS |
2467 | } |
2468 | info->blocked_open--; | |
1da177e4 | 2469 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2470 | printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, " |
2471 | "count = %d\n", info->line, info->count); | |
1da177e4 | 2472 | #endif |
02f1175c JS |
2473 | if (retval) |
2474 | return retval; | |
2475 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2476 | return 0; | |
2477 | } /* block_til_ready */ | |
1da177e4 LT |
2478 | |
2479 | /* | |
2480 | * This routine is called whenever a serial port is opened. It | |
2481 | * performs the serial-specific initialization for the tty structure. | |
2482 | */ | |
02f1175c | 2483 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2484 | { |
02f1175c JS |
2485 | struct cyclades_port *info; |
2486 | int retval, line; | |
1da177e4 | 2487 | |
02f1175c JS |
2488 | line = tty->index; |
2489 | if ((line < 0) || (NR_PORTS <= line)) { | |
2490 | return -ENODEV; | |
2491 | } | |
2492 | info = &cy_port[line]; | |
2493 | if (info->line < 0) { | |
2494 | return -ENODEV; | |
2495 | } | |
1da177e4 | 2496 | |
02f1175c JS |
2497 | /* If the card's firmware hasn't been loaded, |
2498 | treat it as absent from the system. This | |
2499 | will make the user pay attention. | |
2500 | */ | |
875b206b JS |
2501 | if (IS_CYC_Z(*info->card)) { |
2502 | struct cyclades_card *cinfo = info->card; | |
02f1175c JS |
2503 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
2504 | ||
2505 | if (!ISZLOADED(*cinfo)) { | |
db05c3b1 | 2506 | if (((ZE_V1 == readl(&((struct RUNTIME_9060 __iomem *) |
02f1175c JS |
2507 | (cinfo->ctl_addr))->mail_box_0)) && |
2508 | Z_FPGA_CHECK(*cinfo)) && | |
db05c3b1 | 2509 | (ZFIRM_HLT == readl( |
02f1175c | 2510 | &firm_id->signature))) { |
21719191 JS |
2511 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
2512 | "need an external power supply for " | |
2513 | "this number of ports.\nFirmware " | |
2514 | "halted.\n"); | |
02f1175c | 2515 | } else { |
21719191 JS |
2516 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
2517 | "yet loaded\n"); | |
02f1175c JS |
2518 | } |
2519 | return -ENODEV; | |
2520 | } | |
2521 | #ifdef CONFIG_CYZ_INTR | |
2522 | else { | |
2523 | /* In case this Z board is operating in interrupt mode, its | |
2524 | interrupts should be enabled as soon as the first open | |
2525 | happens to one of its ports. */ | |
2526 | if (!cinfo->intr_enabled) { | |
2527 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2528 | struct BOARD_CTRL __iomem *board_ctrl; | |
2529 | ||
2530 | zfw_ctrl = cinfo->base_addr + | |
db05c3b1 JS |
2531 | (readl(&firm_id->zfwctrl_addr) & |
2532 | 0xfffff); | |
02f1175c JS |
2533 | |
2534 | board_ctrl = &zfw_ctrl->board_ctrl; | |
2535 | ||
2536 | /* Enable interrupts on the PLX chip */ | |
2537 | cy_writew(cinfo->ctl_addr + 0x68, | |
db05c3b1 | 2538 | readw(cinfo->ctl_addr + 0x68) | 0x0900); |
02f1175c JS |
2539 | /* Enable interrupts on the FW */ |
2540 | retval = cyz_issue_cmd(cinfo, 0, | |
2541 | C_CM_IRQ_ENBL, 0L); | |
2542 | if (retval != 0) { | |
21719191 JS |
2543 | printk(KERN_ERR "cyc:IRQ enable retval " |
2544 | "was %x\n", retval); | |
02f1175c JS |
2545 | } |
2546 | cinfo->nports = | |
db05c3b1 | 2547 | (int)readl(&board_ctrl->n_channel); |
02f1175c JS |
2548 | cinfo->intr_enabled = 1; |
2549 | } | |
1da177e4 | 2550 | } |
02f1175c JS |
2551 | #endif /* CONFIG_CYZ_INTR */ |
2552 | /* Make sure this Z port really exists in hardware */ | |
2553 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
2554 | return -ENODEV; | |
1da177e4 | 2555 | } |
1da177e4 | 2556 | #ifdef CY_DEBUG_OTHER |
21719191 | 2557 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 2558 | #endif |
02f1175c JS |
2559 | tty->driver_data = info; |
2560 | info->tty = tty; | |
2561 | if (serial_paranoia_check(info, tty->name, "cy_open")) { | |
2562 | return -ENODEV; | |
2563 | } | |
1da177e4 | 2564 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2565 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
2566 | info->count); | |
1da177e4 | 2567 | #endif |
02f1175c | 2568 | info->count++; |
1da177e4 | 2569 | #ifdef CY_DEBUG_COUNT |
21719191 | 2570 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
02f1175c | 2571 | current->pid, info->count); |
1da177e4 | 2572 | #endif |
1da177e4 | 2573 | |
02f1175c JS |
2574 | /* |
2575 | * If the port is the middle of closing, bail out now | |
2576 | */ | |
2577 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2c7fea99 JS |
2578 | wait_event_interruptible(info->close_wait, |
2579 | !(info->flags & ASYNC_CLOSING)); | |
096dcfce | 2580 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
02f1175c | 2581 | } |
1da177e4 | 2582 | |
02f1175c JS |
2583 | /* |
2584 | * Start up serial port | |
2585 | */ | |
2586 | retval = startup(info); | |
2587 | if (retval) { | |
2588 | return retval; | |
2589 | } | |
1da177e4 | 2590 | |
02f1175c JS |
2591 | retval = block_til_ready(tty, filp, info); |
2592 | if (retval) { | |
1da177e4 | 2593 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2594 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
2595 | "with %d\n", retval); | |
1da177e4 | 2596 | #endif |
02f1175c JS |
2597 | return retval; |
2598 | } | |
1da177e4 | 2599 | |
02f1175c | 2600 | info->throttle = 0; |
1da177e4 | 2601 | |
02f1175c | 2602 | #ifdef CY_DEBUG_OPEN |
21719191 | 2603 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
2604 | #endif |
2605 | return 0; | |
2606 | } /* cy_open */ | |
1da177e4 LT |
2607 | |
2608 | /* | |
2609 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
2610 | */ | |
02f1175c | 2611 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 2612 | { |
875b206b | 2613 | struct cyclades_card *card; |
cab9bdd1 | 2614 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2615 | void __iomem *base_addr; |
875b206b | 2616 | int chip, channel, index; |
02f1175c JS |
2617 | unsigned long orig_jiffies; |
2618 | int char_time; | |
2619 | ||
2620 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
2621 | return; | |
2622 | ||
2623 | if (info->xmit_fifo_size == 0) | |
2624 | return; /* Just in case.... */ | |
1da177e4 | 2625 | |
02f1175c JS |
2626 | orig_jiffies = jiffies; |
2627 | /* | |
2628 | * Set the check interval to be 1/5 of the estimated time to | |
2629 | * send a single character, and make it at least 1. The check | |
2630 | * interval should also be less than the timeout. | |
2631 | * | |
2632 | * Note: we have to use pretty tight timings here to satisfy | |
2633 | * the NIST-PCTS. | |
2634 | */ | |
2635 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
2636 | char_time = char_time / 5; | |
2637 | if (char_time <= 0) | |
2638 | char_time = 1; | |
2639 | if (timeout < 0) | |
2640 | timeout = 0; | |
2641 | if (timeout) | |
2642 | char_time = min(char_time, timeout); | |
2643 | /* | |
2644 | * If the transmitter hasn't cleared in twice the approximate | |
2645 | * amount of time to send the entire FIFO, it probably won't | |
2646 | * ever clear. This assumes the UART isn't doing flow | |
2647 | * control, which is currently the case. Hence, if it ever | |
2648 | * takes longer than info->timeout, this is probably due to a | |
2649 | * UART bug of some kind. So, we clamp the timeout parameter at | |
2650 | * 2*info->timeout. | |
2651 | */ | |
2652 | if (!timeout || timeout > 2 * info->timeout) | |
2653 | timeout = 2 * info->timeout; | |
1da177e4 | 2654 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
2655 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
2656 | timeout, char_time, jiffies); | |
1da177e4 | 2657 | #endif |
02f1175c | 2658 | card = info->card; |
875b206b JS |
2659 | channel = (info->line) - (card->first_line); |
2660 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2661 | chip = channel >> 2; |
2662 | channel &= 0x03; | |
875b206b JS |
2663 | index = card->bus_index; |
2664 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
db05c3b1 | 2665 | while (readb(base_addr + (CySRER << index)) & CyTxRdy) { |
1da177e4 | 2666 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2667 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 2668 | #endif |
02f1175c JS |
2669 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
2670 | break; | |
2671 | if (timeout && time_after(jiffies, orig_jiffies + | |
2672 | timeout)) | |
2673 | break; | |
2674 | } | |
2675 | } else { | |
096dcfce | 2676 | /* Nothing to do! */ |
1da177e4 | 2677 | } |
02f1175c JS |
2678 | /* Run one more char cycle */ |
2679 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 | 2680 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2681 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
2682 | #endif |
2683 | } | |
2684 | ||
2685 | /* | |
2686 | * This routine is called when a particular tty device is closed. | |
2687 | */ | |
02f1175c | 2688 | static void cy_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2689 | { |
cab9bdd1 | 2690 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2691 | unsigned long flags; |
1da177e4 LT |
2692 | |
2693 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2694 | printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); |
1da177e4 LT |
2695 | #endif |
2696 | ||
02f1175c JS |
2697 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { |
2698 | return; | |
2699 | } | |
1da177e4 | 2700 | |
02f1175c JS |
2701 | CY_LOCK(info, flags); |
2702 | /* If the TTY is being hung up, nothing to do */ | |
2703 | if (tty_hung_up_p(filp)) { | |
2704 | CY_UNLOCK(info, flags); | |
2705 | return; | |
2706 | } | |
1da177e4 | 2707 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2708 | printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line, |
2709 | info->count); | |
1da177e4 | 2710 | #endif |
02f1175c JS |
2711 | if ((tty->count == 1) && (info->count != 1)) { |
2712 | /* | |
2713 | * Uh, oh. tty->count is 1, which means that the tty | |
2714 | * structure will be freed. Info->count should always | |
2715 | * be one in these conditions. If it's greater than | |
2716 | * one, we've got real problems, since it means the | |
2717 | * serial port won't be shutdown. | |
2718 | */ | |
21719191 JS |
2719 | printk(KERN_ERR "cyc:cy_close: bad serial port count; " |
2720 | "tty->count is 1, info->count is %d\n", info->count); | |
02f1175c JS |
2721 | info->count = 1; |
2722 | } | |
1da177e4 | 2723 | #ifdef CY_DEBUG_COUNT |
21719191 | 2724 | printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n", |
02f1175c | 2725 | current->pid, info->count - 1); |
1da177e4 | 2726 | #endif |
02f1175c | 2727 | if (--info->count < 0) { |
1da177e4 | 2728 | #ifdef CY_DEBUG_COUNT |
21719191 | 2729 | printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n"); |
1da177e4 | 2730 | #endif |
02f1175c | 2731 | info->count = 0; |
1da177e4 | 2732 | } |
02f1175c JS |
2733 | if (info->count) { |
2734 | CY_UNLOCK(info, flags); | |
2735 | return; | |
2736 | } | |
2737 | info->flags |= ASYNC_CLOSING; | |
1da177e4 | 2738 | |
02f1175c JS |
2739 | /* |
2740 | * Now we wait for the transmit buffer to clear; and we notify | |
2741 | * the line discipline to only process XON/XOFF characters. | |
2742 | */ | |
2743 | tty->closing = 1; | |
2744 | CY_UNLOCK(info, flags); | |
2745 | if (info->closing_wait != CY_CLOSING_WAIT_NONE) { | |
2746 | tty_wait_until_sent(tty, info->closing_wait); | |
1da177e4 | 2747 | } |
02f1175c JS |
2748 | CY_LOCK(info, flags); |
2749 | ||
875b206b JS |
2750 | if (!IS_CYC_Z(*info->card)) { |
2751 | int channel = info->line - info->card->first_line; | |
2752 | int index = info->card->bus_index; | |
2753 | void __iomem *base_addr = info->card->base_addr + | |
02f1175c JS |
2754 | (cy_chip_offset[channel >> 2] << index); |
2755 | /* Stop accepting input */ | |
2756 | channel &= 0x03; | |
2757 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
2758 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2759 | readb(base_addr + (CySRER << index)) & ~CyRxData); |
02f1175c JS |
2760 | if (info->flags & ASYNC_INITIALIZED) { |
2761 | /* Waiting for on-board buffers to be empty before closing | |
2762 | the port */ | |
2763 | CY_UNLOCK(info, flags); | |
2764 | cy_wait_until_sent(tty, info->timeout); | |
2765 | CY_LOCK(info, flags); | |
2766 | } | |
2767 | } else { | |
2768 | #ifdef Z_WAKE | |
2769 | /* Waiting for on-board buffers to be empty before closing the port */ | |
875b206b | 2770 | void __iomem *base_addr = info->card->base_addr; |
02f1175c JS |
2771 | struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; |
2772 | struct ZFW_CTRL __iomem *zfw_ctrl = | |
db05c3b1 | 2773 | base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 2774 | struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; |
875b206b | 2775 | int channel = info->line - info->card->first_line; |
02f1175c JS |
2776 | int retval; |
2777 | ||
db05c3b1 | 2778 | if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { |
875b206b | 2779 | retval = cyz_issue_cmd(info->card, channel, |
02f1175c JS |
2780 | C_CM_IOCTLW, 0L); |
2781 | if (retval != 0) { | |
21719191 JS |
2782 | printk(KERN_DEBUG "cyc:cy_close retval on " |
2783 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2784 | } |
2785 | CY_UNLOCK(info, flags); | |
2c7fea99 | 2786 | wait_for_completion_interruptible(&info->shutdown_wait); |
02f1175c JS |
2787 | CY_LOCK(info, flags); |
2788 | } | |
1da177e4 | 2789 | #endif |
02f1175c JS |
2790 | } |
2791 | ||
1da177e4 | 2792 | CY_UNLOCK(info, flags); |
02f1175c JS |
2793 | shutdown(info); |
2794 | if (tty->driver->flush_buffer) | |
2795 | tty->driver->flush_buffer(tty); | |
2796 | tty_ldisc_flush(tty); | |
1da177e4 | 2797 | CY_LOCK(info, flags); |
02f1175c JS |
2798 | |
2799 | tty->closing = 0; | |
2800 | info->event = 0; | |
2801 | info->tty = NULL; | |
2802 | if (info->blocked_open) { | |
2803 | CY_UNLOCK(info, flags); | |
2804 | if (info->close_delay) { | |
2805 | msleep_interruptible(jiffies_to_msecs | |
2806 | (info->close_delay)); | |
2807 | } | |
2808 | wake_up_interruptible(&info->open_wait); | |
2809 | CY_LOCK(info, flags); | |
2810 | } | |
2811 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | |
2812 | wake_up_interruptible(&info->close_wait); | |
1da177e4 LT |
2813 | |
2814 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2815 | printk(KERN_DEBUG "cyc:cy_close done\n"); |
1da177e4 LT |
2816 | #endif |
2817 | ||
02f1175c | 2818 | CY_UNLOCK(info, flags); |
02f1175c | 2819 | } /* cy_close */ |
1da177e4 LT |
2820 | |
2821 | /* This routine gets called when tty_write has put something into | |
2822 | * the write_queue. The characters may come from user space or | |
2823 | * kernel space. | |
2824 | * | |
2825 | * This routine will return the number of characters actually | |
2826 | * accepted for writing. | |
2827 | * | |
2828 | * If the port is not already transmitting stuff, start it off by | |
2829 | * enabling interrupts. The interrupt service routine will then | |
2830 | * ensure that the characters are sent. | |
2831 | * If the port is already active, there is no need to kick it. | |
2832 | * | |
2833 | */ | |
02f1175c | 2834 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 2835 | { |
cab9bdd1 | 2836 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2837 | unsigned long flags; |
2838 | int c, ret = 0; | |
1da177e4 LT |
2839 | |
2840 | #ifdef CY_DEBUG_IO | |
21719191 | 2841 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
2842 | #endif |
2843 | ||
02f1175c JS |
2844 | if (serial_paranoia_check(info, tty->name, "cy_write")) { |
2845 | return 0; | |
2846 | } | |
1da177e4 | 2847 | |
02f1175c JS |
2848 | if (!info->xmit_buf) |
2849 | return 0; | |
1da177e4 | 2850 | |
02f1175c JS |
2851 | CY_LOCK(info, flags); |
2852 | while (1) { | |
2853 | c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), | |
2854 | (int)(SERIAL_XMIT_SIZE - info->xmit_head))); | |
2855 | ||
2856 | if (c <= 0) | |
2857 | break; | |
2858 | ||
2859 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | |
2860 | info->xmit_head = (info->xmit_head + c) & | |
2861 | (SERIAL_XMIT_SIZE - 1); | |
2862 | info->xmit_cnt += c; | |
2863 | buf += c; | |
2864 | count -= c; | |
2865 | ret += c; | |
2866 | } | |
2867 | CY_UNLOCK(info, flags); | |
2868 | ||
2869 | info->idle_stats.xmit_bytes += ret; | |
2870 | info->idle_stats.xmit_idle = jiffies; | |
2871 | ||
2872 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { | |
2873 | start_xmit(info); | |
2874 | } | |
2875 | return ret; | |
2876 | } /* cy_write */ | |
1da177e4 LT |
2877 | |
2878 | /* | |
2879 | * This routine is called by the kernel to write a single | |
2880 | * character to the tty device. If the kernel uses this routine, | |
2881 | * it must call the flush_chars() routine (if defined) when it is | |
2882 | * done stuffing characters into the driver. If there is no room | |
2883 | * in the queue, the character is ignored. | |
2884 | */ | |
02f1175c | 2885 | static void cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 2886 | { |
cab9bdd1 | 2887 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2888 | unsigned long flags; |
1da177e4 LT |
2889 | |
2890 | #ifdef CY_DEBUG_IO | |
21719191 | 2891 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
2892 | #endif |
2893 | ||
02f1175c JS |
2894 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
2895 | return; | |
1da177e4 | 2896 | |
02f1175c JS |
2897 | if (!info->xmit_buf) |
2898 | return; | |
1da177e4 | 2899 | |
02f1175c | 2900 | CY_LOCK(info, flags); |
90cc3018 | 2901 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
02f1175c JS |
2902 | CY_UNLOCK(info, flags); |
2903 | return; | |
2904 | } | |
1da177e4 | 2905 | |
02f1175c JS |
2906 | info->xmit_buf[info->xmit_head++] = ch; |
2907 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
2908 | info->xmit_cnt++; | |
1da177e4 LT |
2909 | info->idle_stats.xmit_bytes++; |
2910 | info->idle_stats.xmit_idle = jiffies; | |
02f1175c JS |
2911 | CY_UNLOCK(info, flags); |
2912 | } /* cy_put_char */ | |
1da177e4 LT |
2913 | |
2914 | /* | |
2915 | * This routine is called by the kernel after it has written a | |
2916 | * series of characters to the tty device using put_char(). | |
2917 | */ | |
02f1175c | 2918 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 2919 | { |
cab9bdd1 | 2920 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2921 | |
1da177e4 | 2922 | #ifdef CY_DEBUG_IO |
21719191 | 2923 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
2924 | #endif |
2925 | ||
02f1175c JS |
2926 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
2927 | return; | |
1da177e4 | 2928 | |
02f1175c JS |
2929 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
2930 | !info->xmit_buf) | |
2931 | return; | |
1da177e4 | 2932 | |
02f1175c JS |
2933 | start_xmit(info); |
2934 | } /* cy_flush_chars */ | |
1da177e4 LT |
2935 | |
2936 | /* | |
2937 | * This routine returns the numbers of characters the tty driver | |
2938 | * will accept for queuing to be written. This number is subject | |
2939 | * to change as output buffers get emptied, or if the output flow | |
2940 | * control is activated. | |
2941 | */ | |
02f1175c | 2942 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 2943 | { |
cab9bdd1 | 2944 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2945 | int ret; |
2946 | ||
1da177e4 | 2947 | #ifdef CY_DEBUG_IO |
21719191 | 2948 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
2949 | #endif |
2950 | ||
02f1175c JS |
2951 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
2952 | return 0; | |
2953 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
2954 | if (ret < 0) | |
2955 | ret = 0; | |
2956 | return ret; | |
2957 | } /* cy_write_room */ | |
1da177e4 | 2958 | |
02f1175c | 2959 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 2960 | { |
875b206b | 2961 | struct cyclades_card *card; |
cab9bdd1 | 2962 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2963 | int channel; |
1da177e4 | 2964 | |
02f1175c JS |
2965 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
2966 | return 0; | |
2967 | ||
2968 | card = info->card; | |
875b206b | 2969 | channel = (info->line) - (card->first_line); |
1da177e4 LT |
2970 | |
2971 | #ifdef Z_EXT_CHARS_IN_BUFFER | |
02f1175c JS |
2972 | if (!IS_CYC_Z(cy_card[card])) { |
2973 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1da177e4 | 2974 | #ifdef CY_DEBUG_IO |
21719191 JS |
2975 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2976 | info->line, info->xmit_cnt); | |
1da177e4 | 2977 | #endif |
02f1175c | 2978 | return info->xmit_cnt; |
1da177e4 | 2979 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 2980 | } else { |
ad39c300 JS |
2981 | static struct FIRM_ID *firm_id; |
2982 | static struct ZFW_CTRL *zfw_ctrl; | |
2983 | static struct CH_CTRL *ch_ctrl; | |
2984 | static struct BUF_CTRL *buf_ctrl; | |
02f1175c | 2985 | int char_count; |
ad39c300 | 2986 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 2987 | |
875b206b JS |
2988 | firm_id = card->base_addr + ID_ADDRESS; |
2989 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 2990 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2991 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
2992 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
2993 | ||
db05c3b1 JS |
2994 | tx_get = readl(&buf_ctrl->tx_get); |
2995 | tx_put = readl(&buf_ctrl->tx_put); | |
2996 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
2997 | if (tx_put >= tx_get) |
2998 | char_count = tx_put - tx_get; | |
2999 | else | |
3000 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 3001 | #ifdef CY_DEBUG_IO |
21719191 JS |
3002 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
3003 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 3004 | #endif |
096dcfce | 3005 | return info->xmit_cnt + char_count; |
02f1175c JS |
3006 | } |
3007 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
3008 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
3009 | |
3010 | /* | |
3011 | * ------------------------------------------------------------ | |
3012 | * cy_ioctl() and friends | |
3013 | * ------------------------------------------------------------ | |
3014 | */ | |
3015 | ||
1a86b5e3 | 3016 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 3017 | { |
02f1175c | 3018 | int co, co_val, bpr; |
1a86b5e3 | 3019 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 3020 | 25000000); |
1da177e4 | 3021 | |
02f1175c JS |
3022 | if (baud == 0) { |
3023 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
3024 | return; | |
3025 | } | |
1da177e4 | 3026 | |
02f1175c JS |
3027 | /* determine which prescaler to use */ |
3028 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
3029 | if (cy_clock / co_val / baud > 63) | |
3030 | break; | |
3031 | } | |
1da177e4 | 3032 | |
02f1175c JS |
3033 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
3034 | if (bpr > 255) | |
3035 | bpr = 255; | |
1da177e4 | 3036 | |
02f1175c JS |
3037 | info->tbpr = info->rbpr = bpr; |
3038 | info->tco = info->rco = co; | |
1da177e4 LT |
3039 | } |
3040 | ||
3041 | /* | |
3042 | * This routine finds or computes the various line characteristics. | |
3043 | * It used to be called config_setup | |
3044 | */ | |
02f1175c | 3045 | static void set_line_char(struct cyclades_port *info) |
1da177e4 | 3046 | { |
875b206b | 3047 | struct cyclades_card *card; |
02f1175c JS |
3048 | unsigned long flags; |
3049 | void __iomem *base_addr; | |
875b206b | 3050 | int chip, channel, index; |
02f1175c JS |
3051 | unsigned cflag, iflag; |
3052 | unsigned short chip_number; | |
3053 | int baud, baud_rate = 0; | |
3054 | int i; | |
3055 | ||
3056 | if (!info->tty || !info->tty->termios) { | |
3057 | return; | |
1da177e4 | 3058 | } |
02f1175c JS |
3059 | if (info->line == -1) { |
3060 | return; | |
1da177e4 | 3061 | } |
02f1175c JS |
3062 | cflag = info->tty->termios->c_cflag; |
3063 | iflag = info->tty->termios->c_iflag; | |
1da177e4 | 3064 | |
02f1175c JS |
3065 | /* |
3066 | * Set up the tty->alt_speed kludge | |
3067 | */ | |
3068 | if (info->tty) { | |
3069 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
3070 | info->tty->alt_speed = 57600; | |
3071 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
3072 | info->tty->alt_speed = 115200; | |
3073 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
3074 | info->tty->alt_speed = 230400; | |
3075 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
3076 | info->tty->alt_speed = 460800; | |
1da177e4 | 3077 | } |
02f1175c JS |
3078 | |
3079 | card = info->card; | |
875b206b | 3080 | channel = info->line - card->first_line; |
02f1175c JS |
3081 | chip_number = channel / 4; |
3082 | ||
875b206b | 3083 | if (!IS_CYC_Z(*card)) { |
02f1175c | 3084 | |
875b206b | 3085 | index = card->bus_index; |
02f1175c JS |
3086 | |
3087 | /* baud rate */ | |
3088 | baud = tty_get_baud_rate(info->tty); | |
3089 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3090 | ASYNC_SPD_CUST) { | |
3091 | if (info->custom_divisor) | |
3092 | baud_rate = info->baud / info->custom_divisor; | |
3093 | else | |
3094 | baud_rate = info->baud; | |
3095 | } else if (baud > CD1400_MAX_SPEED) { | |
3096 | baud = CD1400_MAX_SPEED; | |
3097 | } | |
3098 | /* find the baud index */ | |
3099 | for (i = 0; i < 20; i++) { | |
3100 | if (baud == baud_table[i]) { | |
3101 | break; | |
3102 | } | |
3103 | } | |
3104 | if (i == 20) { | |
3105 | i = 19; /* CD1400_MAX_SPEED */ | |
3106 | } | |
3107 | ||
3108 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3109 | ASYNC_SPD_CUST) { | |
3110 | cyy_baud_calc(info, baud_rate); | |
3111 | } else { | |
3112 | if (info->chip_rev >= CD1400_REV_J) { | |
3113 | /* It is a CD1400 rev. J or later */ | |
3114 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
3115 | info->tco = baud_co_60[i]; /* Tx CO */ | |
3116 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
3117 | info->rco = baud_co_60[i]; /* Rx CO */ | |
3118 | } else { | |
3119 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
3120 | info->tco = baud_co_25[i]; /* Tx CO */ | |
3121 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
3122 | info->rco = baud_co_25[i]; /* Rx CO */ | |
3123 | } | |
3124 | } | |
3125 | if (baud_table[i] == 134) { | |
3126 | /* get it right for 134.5 baud */ | |
3127 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3128 | 2; | |
3129 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3130 | ASYNC_SPD_CUST) { | |
3131 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3132 | baud_rate) + 2; | |
3133 | } else if (baud_table[i]) { | |
3134 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3135 | baud_table[i]) + 2; | |
3136 | /* this needs to be propagated into the card info */ | |
3137 | } else { | |
3138 | info->timeout = 0; | |
3139 | } | |
3140 | /* By tradition (is it a standard?) a baud rate of zero | |
3141 | implies the line should be/has been closed. A bit | |
3142 | later in this routine such a test is performed. */ | |
3143 | ||
3144 | /* byte size and parity */ | |
3145 | info->cor5 = 0; | |
3146 | info->cor4 = 0; | |
3147 | /* receive threshold */ | |
3148 | info->cor3 = (info->default_threshold ? | |
3149 | info->default_threshold : baud_cor3[i]); | |
3150 | info->cor2 = CyETC; | |
3151 | switch (cflag & CSIZE) { | |
3152 | case CS5: | |
3153 | info->cor1 = Cy_5_BITS; | |
3154 | break; | |
3155 | case CS6: | |
3156 | info->cor1 = Cy_6_BITS; | |
3157 | break; | |
3158 | case CS7: | |
3159 | info->cor1 = Cy_7_BITS; | |
3160 | break; | |
3161 | case CS8: | |
3162 | info->cor1 = Cy_8_BITS; | |
3163 | break; | |
3164 | } | |
3165 | if (cflag & CSTOPB) { | |
3166 | info->cor1 |= Cy_2_STOP; | |
3167 | } | |
3168 | if (cflag & PARENB) { | |
3169 | if (cflag & PARODD) { | |
3170 | info->cor1 |= CyPARITY_O; | |
3171 | } else { | |
3172 | info->cor1 |= CyPARITY_E; | |
3173 | } | |
3174 | } else { | |
3175 | info->cor1 |= CyPARITY_NONE; | |
3176 | } | |
3177 | ||
3178 | /* CTS flow control flag */ | |
3179 | if (cflag & CRTSCTS) { | |
3180 | info->flags |= ASYNC_CTS_FLOW; | |
3181 | info->cor2 |= CyCtsAE; | |
3182 | } else { | |
3183 | info->flags &= ~ASYNC_CTS_FLOW; | |
3184 | info->cor2 &= ~CyCtsAE; | |
3185 | } | |
3186 | if (cflag & CLOCAL) | |
3187 | info->flags &= ~ASYNC_CHECK_CD; | |
3188 | else | |
3189 | info->flags |= ASYNC_CHECK_CD; | |
1da177e4 LT |
3190 | |
3191 | /*********************************************** | |
3192 | The hardware option, CyRtsAO, presents RTS when | |
3193 | the chip has characters to send. Since most modems | |
3194 | use RTS as reverse (inbound) flow control, this | |
3195 | option is not used. If inbound flow control is | |
3196 | necessary, DTR can be programmed to provide the | |
3197 | appropriate signals for use with a non-standard | |
3198 | cable. Contact Marcio Saito for details. | |
3199 | ***********************************************/ | |
3200 | ||
02f1175c JS |
3201 | chip = channel >> 2; |
3202 | channel &= 0x03; | |
875b206b | 3203 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 3204 | |
02f1175c JS |
3205 | CY_LOCK(info, flags); |
3206 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
3207 | ||
3208 | /* tx and rx baud rate */ | |
3209 | ||
3210 | cy_writeb(base_addr + (CyTCOR << index), info->tco); | |
3211 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); | |
3212 | cy_writeb(base_addr + (CyRCOR << index), info->rco); | |
3213 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); | |
3214 | ||
3215 | /* set line characteristics according configuration */ | |
3216 | ||
3217 | cy_writeb(base_addr + (CySCHR1 << index), | |
3218 | START_CHAR(info->tty)); | |
3219 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->tty)); | |
3220 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); | |
3221 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); | |
3222 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); | |
3223 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); | |
3224 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); | |
3225 | ||
3226 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | | |
3227 | CyCOR3ch, index); | |
3228 | ||
3229 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); /* !!! Is this needed? */ | |
3230 | cy_writeb(base_addr + (CyRTPR << index), | |
3231 | (info->default_timeout ? info->default_timeout : 0x02)); | |
3232 | /* 10ms rx timeout */ | |
3233 | ||
3234 | if (C_CLOCAL(info->tty)) { | |
3235 | /* without modem intr */ | |
3236 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3237 | readb(base_addr + (CySRER << index)) | CyMdmCh); |
02f1175c JS |
3238 | /* act on 1->0 modem transitions */ |
3239 | if ((cflag & CRTSCTS) && info->rflow) { | |
3240 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3241 | (CyCTS | rflow_thr[i])); | |
3242 | } else { | |
3243 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3244 | CyCTS); | |
3245 | } | |
3246 | /* act on 0->1 modem transitions */ | |
3247 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); | |
1da177e4 | 3248 | } else { |
02f1175c JS |
3249 | /* without modem intr */ |
3250 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3251 | readb(base_addr + |
02f1175c JS |
3252 | (CySRER << index)) | CyMdmCh); |
3253 | /* act on 1->0 modem transitions */ | |
3254 | if ((cflag & CRTSCTS) && info->rflow) { | |
3255 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3256 | (CyDSR | CyCTS | CyRI | CyDCD | | |
3257 | rflow_thr[i])); | |
3258 | } else { | |
3259 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3260 | CyDSR | CyCTS | CyRI | CyDCD); | |
3261 | } | |
3262 | /* act on 0->1 modem transitions */ | |
3263 | cy_writeb(base_addr + (CyMCOR2 << index), | |
3264 | CyDSR | CyCTS | CyRI | CyDCD); | |
1da177e4 | 3265 | } |
02f1175c JS |
3266 | |
3267 | if (i == 0) { /* baud rate is zero, turn off line */ | |
3268 | if (info->rtsdtr_inv) { | |
3269 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3270 | ~CyRTS); | |
3271 | } else { | |
3272 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3273 | ~CyDTR); | |
3274 | } | |
1da177e4 | 3275 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3276 | printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n"); |
3277 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3278 | readb(base_addr + (CyMSVR1 << index)), |
3279 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3280 | #endif |
02f1175c JS |
3281 | } else { |
3282 | if (info->rtsdtr_inv) { | |
3283 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3284 | CyRTS); | |
3285 | } else { | |
3286 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3287 | CyDTR); | |
3288 | } | |
1da177e4 | 3289 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3290 | printk(KERN_DEBUG "cyc:set_line_char raising DTR\n"); |
3291 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3292 | readb(base_addr + (CyMSVR1 << index)), |
3293 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3294 | #endif |
02f1175c | 3295 | } |
1da177e4 | 3296 | |
02f1175c JS |
3297 | if (info->tty) { |
3298 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3299 | } | |
3300 | CY_UNLOCK(info, flags); | |
1da177e4 | 3301 | |
1da177e4 | 3302 | } else { |
02f1175c JS |
3303 | struct FIRM_ID __iomem *firm_id; |
3304 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3305 | struct BOARD_CTRL __iomem *board_ctrl; | |
3306 | struct CH_CTRL __iomem *ch_ctrl; | |
3307 | struct BUF_CTRL __iomem *buf_ctrl; | |
1a86b5e3 | 3308 | __u32 sw_flow; |
02f1175c | 3309 | int retval; |
1da177e4 | 3310 | |
875b206b JS |
3311 | firm_id = card->base_addr + ID_ADDRESS; |
3312 | if (!ISZLOADED(*card)) { | |
02f1175c JS |
3313 | return; |
3314 | } | |
1da177e4 | 3315 | |
875b206b | 3316 | zfw_ctrl = card->base_addr + |
db05c3b1 | 3317 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3318 | board_ctrl = &zfw_ctrl->board_ctrl; |
3319 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); | |
3320 | buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3321 | ||
3322 | /* baud rate */ | |
3323 | baud = tty_get_baud_rate(info->tty); | |
3324 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3325 | ASYNC_SPD_CUST) { | |
3326 | if (info->custom_divisor) | |
3327 | baud_rate = info->baud / info->custom_divisor; | |
3328 | else | |
3329 | baud_rate = info->baud; | |
3330 | } else if (baud > CYZ_MAX_SPEED) { | |
3331 | baud = CYZ_MAX_SPEED; | |
3332 | } | |
3333 | cy_writel(&ch_ctrl->comm_baud, baud); | |
3334 | ||
3335 | if (baud == 134) { | |
3336 | /* get it right for 134.5 baud */ | |
3337 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3338 | 2; | |
3339 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3340 | ASYNC_SPD_CUST) { | |
3341 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3342 | baud_rate) + 2; | |
3343 | } else if (baud) { | |
3344 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3345 | baud) + 2; | |
3346 | /* this needs to be propagated into the card info */ | |
3347 | } else { | |
3348 | info->timeout = 0; | |
3349 | } | |
1da177e4 | 3350 | |
02f1175c JS |
3351 | /* byte size and parity */ |
3352 | switch (cflag & CSIZE) { | |
3353 | case CS5: | |
3354 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
3355 | break; | |
3356 | case CS6: | |
3357 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
3358 | break; | |
3359 | case CS7: | |
3360 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
3361 | break; | |
3362 | case CS8: | |
3363 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
3364 | break; | |
3365 | } | |
3366 | if (cflag & CSTOPB) { | |
3367 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3368 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
3369 | } else { |
3370 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3371 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
3372 | } |
3373 | if (cflag & PARENB) { | |
3374 | if (cflag & PARODD) { | |
3375 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); | |
3376 | } else { | |
3377 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); | |
3378 | } | |
3379 | } else { | |
3380 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); | |
3381 | } | |
1da177e4 | 3382 | |
02f1175c JS |
3383 | /* CTS flow control flag */ |
3384 | if (cflag & CRTSCTS) { | |
3385 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 3386 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 3387 | } else { |
db05c3b1 JS |
3388 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
3389 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
3390 | } |
3391 | /* As the HW flow control is done in firmware, the driver | |
3392 | doesn't need to care about it */ | |
3393 | info->flags &= ~ASYNC_CTS_FLOW; | |
3394 | ||
3395 | /* XON/XOFF/XANY flow control flags */ | |
3396 | sw_flow = 0; | |
3397 | if (iflag & IXON) { | |
3398 | sw_flow |= C_FL_OXX; | |
3399 | if (iflag & IXANY) | |
3400 | sw_flow |= C_FL_OIXANY; | |
3401 | } | |
3402 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
3403 | ||
875b206b | 3404 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 3405 | if (retval != 0) { |
21719191 JS |
3406 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
3407 | "was %x\n", info->line, retval); | |
02f1175c JS |
3408 | } |
3409 | ||
3410 | /* CD sensitivity */ | |
3411 | if (cflag & CLOCAL) { | |
3412 | info->flags &= ~ASYNC_CHECK_CD; | |
3413 | } else { | |
3414 | info->flags |= ASYNC_CHECK_CD; | |
3415 | } | |
1da177e4 | 3416 | |
02f1175c JS |
3417 | if (baud == 0) { /* baud rate is zero, turn off line */ |
3418 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3419 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 3420 | #ifdef CY_DEBUG_DTR |
21719191 | 3421 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 3422 | #endif |
02f1175c JS |
3423 | } else { |
3424 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3425 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 3426 | #ifdef CY_DEBUG_DTR |
21719191 | 3427 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 3428 | #endif |
02f1175c | 3429 | } |
1da177e4 | 3430 | |
875b206b | 3431 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM,0L); |
02f1175c | 3432 | if (retval != 0) { |
21719191 JS |
3433 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
3434 | "was %x\n", info->line, retval); | |
02f1175c | 3435 | } |
1da177e4 | 3436 | |
02f1175c JS |
3437 | if (info->tty) { |
3438 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3439 | } | |
1da177e4 | 3440 | } |
02f1175c | 3441 | } /* set_line_char */ |
1da177e4 LT |
3442 | |
3443 | static int | |
02f1175c JS |
3444 | get_serial_info(struct cyclades_port *info, |
3445 | struct serial_struct __user * retinfo) | |
1da177e4 | 3446 | { |
02f1175c | 3447 | struct serial_struct tmp; |
875b206b | 3448 | struct cyclades_card *cinfo = info->card; |
1da177e4 | 3449 | |
02f1175c JS |
3450 | if (!retinfo) |
3451 | return -EFAULT; | |
3452 | memset(&tmp, 0, sizeof(tmp)); | |
3453 | tmp.type = info->type; | |
3454 | tmp.line = info->line; | |
875b206b JS |
3455 | tmp.port = (info->card - cy_card) * 0x100 + info->line - |
3456 | cinfo->first_line; | |
02f1175c JS |
3457 | tmp.irq = cinfo->irq; |
3458 | tmp.flags = info->flags; | |
3459 | tmp.close_delay = info->close_delay; | |
d5dedf99 | 3460 | tmp.closing_wait = info->closing_wait; |
02f1175c JS |
3461 | tmp.baud_base = info->baud; |
3462 | tmp.custom_divisor = info->custom_divisor; | |
3463 | tmp.hub6 = 0; /*!!! */ | |
3464 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
3465 | } /* get_serial_info */ | |
1da177e4 LT |
3466 | |
3467 | static int | |
02f1175c JS |
3468 | set_serial_info(struct cyclades_port *info, |
3469 | struct serial_struct __user * new_info) | |
1da177e4 | 3470 | { |
02f1175c JS |
3471 | struct serial_struct new_serial; |
3472 | struct cyclades_port old_info; | |
3473 | ||
3474 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
3475 | return -EFAULT; | |
3476 | old_info = *info; | |
3477 | ||
3478 | if (!capable(CAP_SYS_ADMIN)) { | |
3479 | if (new_serial.close_delay != info->close_delay || | |
3480 | new_serial.baud_base != info->baud || | |
3481 | (new_serial.flags & ASYNC_FLAGS & | |
3482 | ~ASYNC_USR_MASK) != | |
3483 | (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) | |
3484 | return -EPERM; | |
3485 | info->flags = (info->flags & ~ASYNC_USR_MASK) | | |
3486 | (new_serial.flags & ASYNC_USR_MASK); | |
3487 | info->baud = new_serial.baud_base; | |
3488 | info->custom_divisor = new_serial.custom_divisor; | |
3489 | goto check_and_exit; | |
3490 | } | |
3491 | ||
3492 | /* | |
3493 | * OK, past this point, all the error checking has been done. | |
3494 | * At this point, we start making changes..... | |
3495 | */ | |
3496 | ||
3497 | info->baud = new_serial.baud_base; | |
3498 | info->custom_divisor = new_serial.custom_divisor; | |
3499 | info->flags = (info->flags & ~ASYNC_FLAGS) | | |
3500 | (new_serial.flags & ASYNC_FLAGS); | |
3501 | info->close_delay = new_serial.close_delay * HZ / 100; | |
3502 | info->closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
3503 | |
3504 | check_and_exit: | |
02f1175c JS |
3505 | if (info->flags & ASYNC_INITIALIZED) { |
3506 | set_line_char(info); | |
3507 | return 0; | |
3508 | } else { | |
3509 | return startup(info); | |
3510 | } | |
3511 | } /* set_serial_info */ | |
1da177e4 LT |
3512 | |
3513 | /* | |
3514 | * get_lsr_info - get line status register info | |
3515 | * | |
3516 | * Purpose: Let user call ioctl() to get info when the UART physically | |
3517 | * is emptied. On bus types like RS485, the transmitter must | |
3518 | * release the bus after transmitting. This must be done when | |
3519 | * the transmit shift register is empty, not be done when the | |
3520 | * transmit holding register is empty. This functionality | |
3521 | * allows an RS485 driver to be written in user space. | |
3522 | */ | |
02f1175c | 3523 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user * value) |
1da177e4 | 3524 | { |
875b206b JS |
3525 | struct cyclades_card *card; |
3526 | int chip, channel, index; | |
02f1175c JS |
3527 | unsigned char status; |
3528 | unsigned int result; | |
3529 | unsigned long flags; | |
3530 | void __iomem *base_addr; | |
1da177e4 | 3531 | |
02f1175c | 3532 | card = info->card; |
875b206b JS |
3533 | channel = (info->line) - (card->first_line); |
3534 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3535 | chip = channel >> 2; |
3536 | channel &= 0x03; | |
875b206b JS |
3537 | index = card->bus_index; |
3538 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c JS |
3539 | |
3540 | CY_LOCK(info, flags); | |
db05c3b1 | 3541 | status = readb(base_addr + (CySRER << index)) & |
02f1175c JS |
3542 | (CyTxRdy | CyTxMpty); |
3543 | CY_UNLOCK(info, flags); | |
3544 | result = (status ? 0 : TIOCSER_TEMT); | |
3545 | } else { | |
3546 | /* Not supported yet */ | |
3547 | return -EINVAL; | |
3548 | } | |
3549 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
3550 | } |
3551 | ||
02f1175c | 3552 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 3553 | { |
cab9bdd1 | 3554 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3555 | struct cyclades_card *card; |
3556 | int chip, channel, index; | |
02f1175c JS |
3557 | void __iomem *base_addr; |
3558 | unsigned long flags; | |
3559 | unsigned char status; | |
3560 | unsigned long lstatus; | |
3561 | unsigned int result; | |
3562 | struct FIRM_ID __iomem *firm_id; | |
3563 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3564 | struct BOARD_CTRL __iomem *board_ctrl; | |
3565 | struct CH_CTRL __iomem *ch_ctrl; | |
3566 | ||
3567 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3568 | return -ENODEV; | |
1da177e4 | 3569 | |
02f1175c | 3570 | card = info->card; |
875b206b JS |
3571 | channel = info->line - card->first_line; |
3572 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3573 | chip = channel >> 2; |
3574 | channel &= 0x03; | |
875b206b JS |
3575 | index = card->bus_index; |
3576 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3577 | |
02f1175c JS |
3578 | CY_LOCK(info, flags); |
3579 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
db05c3b1 JS |
3580 | status = readb(base_addr + (CyMSVR1 << index)); |
3581 | status |= readb(base_addr + (CyMSVR2 << index)); | |
02f1175c JS |
3582 | CY_UNLOCK(info, flags); |
3583 | ||
3584 | if (info->rtsdtr_inv) { | |
3585 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
3586 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
3587 | } else { | |
3588 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
3589 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
3590 | } | |
3591 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
3592 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
3593 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
3594 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 3595 | } else { |
875b206b JS |
3596 | base_addr = card->base_addr; |
3597 | firm_id = card->base_addr + ID_ADDRESS; | |
3598 | if (ISZLOADED(*card)) { | |
3599 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 3600 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3601 | board_ctrl = &zfw_ctrl->board_ctrl; |
3602 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
db05c3b1 | 3603 | lstatus = readl(&ch_ctrl[channel].rs_status); |
02f1175c JS |
3604 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
3605 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
3606 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
3607 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
3608 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
3609 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
3610 | } else { | |
3611 | result = 0; | |
3612 | return -ENODEV; | |
3613 | } | |
1da177e4 | 3614 | |
02f1175c JS |
3615 | } |
3616 | return result; | |
3617 | } /* cy_tiomget */ | |
1da177e4 LT |
3618 | |
3619 | static int | |
3620 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
02f1175c | 3621 | unsigned int set, unsigned int clear) |
1da177e4 | 3622 | { |
cab9bdd1 | 3623 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3624 | struct cyclades_card *card; |
3625 | int chip, channel, index; | |
02f1175c JS |
3626 | void __iomem *base_addr; |
3627 | unsigned long flags; | |
3628 | struct FIRM_ID __iomem *firm_id; | |
3629 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3630 | struct BOARD_CTRL __iomem *board_ctrl; | |
3631 | struct CH_CTRL __iomem *ch_ctrl; | |
3632 | int retval; | |
3633 | ||
3634 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3635 | return -ENODEV; | |
3636 | ||
3637 | card = info->card; | |
875b206b JS |
3638 | channel = (info->line) - (card->first_line); |
3639 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3640 | chip = channel >> 2; |
3641 | channel &= 0x03; | |
875b206b JS |
3642 | index = card->bus_index; |
3643 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c JS |
3644 | |
3645 | if (set & TIOCM_RTS) { | |
3646 | CY_LOCK(info, flags); | |
3647 | cy_writeb(base_addr + (CyCAR << index), | |
3648 | (u_char) channel); | |
3649 | if (info->rtsdtr_inv) { | |
3650 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3651 | CyDTR); | |
3652 | } else { | |
3653 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3654 | CyRTS); | |
3655 | } | |
3656 | CY_UNLOCK(info, flags); | |
3657 | } | |
3658 | if (clear & TIOCM_RTS) { | |
3659 | CY_LOCK(info, flags); | |
3660 | cy_writeb(base_addr + (CyCAR << index), | |
3661 | (u_char) channel); | |
3662 | if (info->rtsdtr_inv) { | |
3663 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3664 | ~CyDTR); | |
3665 | } else { | |
3666 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3667 | ~CyRTS); | |
3668 | } | |
3669 | CY_UNLOCK(info, flags); | |
3670 | } | |
3671 | if (set & TIOCM_DTR) { | |
3672 | CY_LOCK(info, flags); | |
3673 | cy_writeb(base_addr + (CyCAR << index), | |
3674 | (u_char) channel); | |
3675 | if (info->rtsdtr_inv) { | |
3676 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3677 | CyRTS); | |
3678 | } else { | |
3679 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3680 | CyDTR); | |
3681 | } | |
1da177e4 | 3682 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3683 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); |
3684 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3685 | readb(base_addr + (CyMSVR1 << index)), |
3686 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3687 | #endif |
02f1175c JS |
3688 | CY_UNLOCK(info, flags); |
3689 | } | |
3690 | if (clear & TIOCM_DTR) { | |
3691 | CY_LOCK(info, flags); | |
3692 | cy_writeb(base_addr + (CyCAR << index), | |
3693 | (u_char) channel); | |
3694 | if (info->rtsdtr_inv) { | |
3695 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3696 | ~CyRTS); | |
3697 | } else { | |
3698 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3699 | ~CyDTR); | |
3700 | } | |
1da177e4 LT |
3701 | |
3702 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
3703 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); |
3704 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3705 | readb(base_addr + (CyMSVR1 << index)), |
3706 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3707 | #endif |
02f1175c JS |
3708 | CY_UNLOCK(info, flags); |
3709 | } | |
3710 | } else { | |
875b206b | 3711 | base_addr = card->base_addr; |
02f1175c | 3712 | |
875b206b JS |
3713 | firm_id = card->base_addr + ID_ADDRESS; |
3714 | if (ISZLOADED(*card)) { | |
3715 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 3716 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
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, | |
db05c3b1 JS |
3723 | readl(&ch_ctrl[channel].rs_control) | |
3724 | C_RS_RTS); | |
02f1175c JS |
3725 | CY_UNLOCK(info, flags); |
3726 | } | |
3727 | if (clear & TIOCM_RTS) { | |
3728 | CY_LOCK(info, flags); | |
3729 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 JS |
3730 | readl(&ch_ctrl[channel].rs_control) & |
3731 | ~C_RS_RTS); | |
02f1175c JS |
3732 | CY_UNLOCK(info, flags); |
3733 | } | |
3734 | if (set & TIOCM_DTR) { | |
3735 | CY_LOCK(info, flags); | |
3736 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 JS |
3737 | readl(&ch_ctrl[channel].rs_control) | |
3738 | C_RS_DTR); | |
1da177e4 | 3739 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3740 | printk(KERN_DEBUG "cyc:set_modem_info raising " |
3741 | "Z DTR\n"); | |
1da177e4 | 3742 | #endif |
02f1175c JS |
3743 | CY_UNLOCK(info, flags); |
3744 | } | |
3745 | if (clear & TIOCM_DTR) { | |
3746 | CY_LOCK(info, flags); | |
3747 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 JS |
3748 | readl(&ch_ctrl[channel].rs_control) & |
3749 | ~C_RS_DTR); | |
1da177e4 | 3750 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3751 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
3752 | "Z DTR\n"); | |
1da177e4 | 3753 | #endif |
02f1175c JS |
3754 | CY_UNLOCK(info, flags); |
3755 | } | |
3756 | } else { | |
3757 | return -ENODEV; | |
3758 | } | |
3759 | CY_LOCK(info, flags); | |
875b206b | 3760 | retval = cyz_issue_cmd(info->card, |
02f1175c JS |
3761 | channel, C_CM_IOCTLM, 0L); |
3762 | if (retval != 0) { | |
21719191 JS |
3763 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
3764 | "was %x\n", info->line, retval); | |
02f1175c JS |
3765 | } |
3766 | CY_UNLOCK(info, flags); | |
1da177e4 | 3767 | } |
02f1175c JS |
3768 | return 0; |
3769 | } /* cy_tiocmset */ | |
1da177e4 LT |
3770 | |
3771 | /* | |
3772 | * cy_break() --- routine which turns the break handling on or off | |
3773 | */ | |
02f1175c | 3774 | static void cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 3775 | { |
cab9bdd1 | 3776 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 3777 | unsigned long flags; |
1da177e4 | 3778 | |
02f1175c JS |
3779 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
3780 | return; | |
1da177e4 | 3781 | |
02f1175c | 3782 | CY_LOCK(info, flags); |
875b206b | 3783 | if (!IS_CYC_Z(*info->card)) { |
02f1175c JS |
3784 | /* Let the transmit ISR take care of this (since it |
3785 | requires stuffing characters into the output stream). | |
3786 | */ | |
3787 | if (break_state == -1) { | |
3788 | if (!info->breakon) { | |
3789 | info->breakon = 1; | |
3790 | if (!info->xmit_cnt) { | |
3791 | CY_UNLOCK(info, flags); | |
3792 | start_xmit(info); | |
3793 | CY_LOCK(info, flags); | |
3794 | } | |
3795 | } | |
3796 | } else { | |
3797 | if (!info->breakoff) { | |
3798 | info->breakoff = 1; | |
3799 | if (!info->xmit_cnt) { | |
3800 | CY_UNLOCK(info, flags); | |
3801 | start_xmit(info); | |
3802 | CY_LOCK(info, flags); | |
3803 | } | |
3804 | } | |
1da177e4 | 3805 | } |
1da177e4 | 3806 | } else { |
02f1175c JS |
3807 | int retval; |
3808 | ||
3809 | if (break_state == -1) { | |
875b206b JS |
3810 | retval = cyz_issue_cmd(info->card, |
3811 | info->line - info->card->first_line, | |
02f1175c JS |
3812 | C_CM_SET_BREAK, 0L); |
3813 | if (retval != 0) { | |
21719191 JS |
3814 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
3815 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
3816 | } |
3817 | } else { | |
875b206b JS |
3818 | retval = cyz_issue_cmd(info->card, |
3819 | info->line - info->card->first_line, | |
02f1175c JS |
3820 | C_CM_CLR_BREAK, 0L); |
3821 | if (retval != 0) { | |
21719191 JS |
3822 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
3823 | "on ttyC%d was %x\n", info->line, | |
3824 | retval); | |
02f1175c | 3825 | } |
1da177e4 | 3826 | } |
1da177e4 | 3827 | } |
02f1175c JS |
3828 | CY_UNLOCK(info, flags); |
3829 | } /* cy_break */ | |
1da177e4 LT |
3830 | |
3831 | static int | |
02f1175c | 3832 | get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) |
1da177e4 LT |
3833 | { |
3834 | ||
02f1175c JS |
3835 | if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) |
3836 | return -EFAULT; | |
3837 | info->mon.int_count = 0; | |
3838 | info->mon.char_count = 0; | |
3839 | info->mon.char_max = 0; | |
3840 | info->mon.char_last = 0; | |
3841 | return 0; | |
3842 | } /* get_mon_info */ | |
1da177e4 | 3843 | |
02f1175c | 3844 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3845 | { |
875b206b | 3846 | struct cyclades_card *card; |
02f1175c | 3847 | void __iomem *base_addr; |
875b206b | 3848 | int channel, chip, index; |
02f1175c | 3849 | unsigned long flags; |
1da177e4 | 3850 | |
02f1175c | 3851 | card = info->card; |
875b206b JS |
3852 | channel = info->line - card->first_line; |
3853 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3854 | chip = channel >> 2; |
3855 | channel &= 0x03; | |
875b206b | 3856 | index = card->bus_index; |
02f1175c | 3857 | base_addr = |
875b206b | 3858 | card->base_addr + (cy_chip_offset[chip] << index); |
02f1175c JS |
3859 | |
3860 | info->cor3 &= ~CyREC_FIFO; | |
3861 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 3862 | |
02f1175c JS |
3863 | CY_LOCK(info, flags); |
3864 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); | |
3865 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); | |
3866 | CY_UNLOCK(info, flags); | |
3867 | } else { | |
096dcfce | 3868 | /* Nothing to do! */ |
02f1175c JS |
3869 | } |
3870 | return 0; | |
3871 | } /* set_threshold */ | |
1da177e4 LT |
3872 | |
3873 | static int | |
02f1175c | 3874 | get_threshold(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3875 | { |
875b206b | 3876 | struct cyclades_card *card; |
02f1175c | 3877 | void __iomem *base_addr; |
875b206b | 3878 | int channel, chip, index; |
02f1175c | 3879 | unsigned long tmp; |
1da177e4 | 3880 | |
02f1175c | 3881 | card = info->card; |
875b206b JS |
3882 | channel = info->line - card->first_line; |
3883 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3884 | chip = channel >> 2; |
3885 | channel &= 0x03; | |
875b206b JS |
3886 | index = card->bus_index; |
3887 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3888 | |
db05c3b1 | 3889 | tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
02f1175c JS |
3890 | return put_user(tmp, value); |
3891 | } else { | |
096dcfce | 3892 | /* Nothing to do! */ |
02f1175c JS |
3893 | return 0; |
3894 | } | |
3895 | } /* get_threshold */ | |
1da177e4 LT |
3896 | |
3897 | static int | |
02f1175c | 3898 | set_default_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3899 | { |
02f1175c JS |
3900 | info->default_threshold = value & 0x0f; |
3901 | return 0; | |
3902 | } /* set_default_threshold */ | |
1da177e4 LT |
3903 | |
3904 | static int | |
02f1175c | 3905 | get_default_threshold(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3906 | { |
02f1175c JS |
3907 | return put_user(info->default_threshold, value); |
3908 | } /* get_default_threshold */ | |
1da177e4 | 3909 | |
02f1175c | 3910 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3911 | { |
875b206b | 3912 | struct cyclades_card *card; |
02f1175c | 3913 | void __iomem *base_addr; |
875b206b | 3914 | int channel, chip, index; |
02f1175c | 3915 | unsigned long flags; |
1da177e4 | 3916 | |
02f1175c | 3917 | card = info->card; |
875b206b JS |
3918 | channel = info->line - card->first_line; |
3919 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3920 | chip = channel >> 2; |
3921 | channel &= 0x03; | |
875b206b JS |
3922 | index = card->bus_index; |
3923 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3924 | |
02f1175c JS |
3925 | CY_LOCK(info, flags); |
3926 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); | |
3927 | CY_UNLOCK(info, flags); | |
3928 | } else { | |
096dcfce | 3929 | /* Nothing to do! */ |
02f1175c JS |
3930 | } |
3931 | return 0; | |
3932 | } /* set_timeout */ | |
1da177e4 | 3933 | |
02f1175c | 3934 | static int get_timeout(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3935 | { |
875b206b | 3936 | struct cyclades_card *card; |
02f1175c | 3937 | void __iomem *base_addr; |
875b206b | 3938 | int channel, chip, index; |
02f1175c | 3939 | unsigned long tmp; |
1da177e4 | 3940 | |
02f1175c | 3941 | card = info->card; |
875b206b JS |
3942 | channel = info->line - card->first_line; |
3943 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3944 | chip = channel >> 2; |
3945 | channel &= 0x03; | |
875b206b JS |
3946 | index = card->bus_index; |
3947 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3948 | |
db05c3b1 | 3949 | tmp = readb(base_addr + (CyRTPR << index)); |
02f1175c JS |
3950 | return put_user(tmp, value); |
3951 | } else { | |
096dcfce | 3952 | /* Nothing to do! */ |
02f1175c JS |
3953 | return 0; |
3954 | } | |
3955 | } /* get_timeout */ | |
1da177e4 | 3956 | |
02f1175c | 3957 | static int set_default_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3958 | { |
02f1175c JS |
3959 | info->default_timeout = value & 0xff; |
3960 | return 0; | |
3961 | } /* set_default_timeout */ | |
1da177e4 LT |
3962 | |
3963 | static int | |
02f1175c | 3964 | get_default_timeout(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3965 | { |
02f1175c JS |
3966 | return put_user(info->default_timeout, value); |
3967 | } /* get_default_timeout */ | |
1da177e4 LT |
3968 | |
3969 | /* | |
3970 | * This routine allows the tty driver to implement device- | |
3971 | * specific ioctl's. If the ioctl number passed in cmd is | |
3972 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
3973 | */ | |
3974 | static int | |
02f1175c JS |
3975 | cy_ioctl(struct tty_struct *tty, struct file *file, |
3976 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 3977 | { |
cab9bdd1 | 3978 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
3979 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ |
3980 | struct serial_icounter_struct __user *p_cuser; /* user space */ | |
3981 | int ret_val = 0; | |
3982 | unsigned long flags; | |
3983 | void __user *argp = (void __user *)arg; | |
3984 | ||
3985 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
3986 | return -ENODEV; | |
1da177e4 LT |
3987 | |
3988 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
3989 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
3990 | info->line, cmd, arg); | |
1da177e4 LT |
3991 | #endif |
3992 | ||
02f1175c JS |
3993 | switch (cmd) { |
3994 | case CYGETMON: | |
3995 | ret_val = get_mon_info(info, argp); | |
3996 | break; | |
3997 | case CYGETTHRESH: | |
3998 | ret_val = get_threshold(info, argp); | |
3999 | break; | |
4000 | case CYSETTHRESH: | |
4001 | ret_val = set_threshold(info, arg); | |
4002 | break; | |
4003 | case CYGETDEFTHRESH: | |
4004 | ret_val = get_default_threshold(info, argp); | |
4005 | break; | |
4006 | case CYSETDEFTHRESH: | |
4007 | ret_val = set_default_threshold(info, arg); | |
4008 | break; | |
4009 | case CYGETTIMEOUT: | |
4010 | ret_val = get_timeout(info, argp); | |
4011 | break; | |
4012 | case CYSETTIMEOUT: | |
4013 | ret_val = set_timeout(info, arg); | |
4014 | break; | |
4015 | case CYGETDEFTIMEOUT: | |
4016 | ret_val = get_default_timeout(info, argp); | |
4017 | break; | |
4018 | case CYSETDEFTIMEOUT: | |
4019 | ret_val = set_default_timeout(info, arg); | |
4020 | break; | |
1da177e4 | 4021 | case CYSETRFLOW: |
02f1175c JS |
4022 | info->rflow = (int)arg; |
4023 | ret_val = 0; | |
4024 | break; | |
1da177e4 | 4025 | case CYGETRFLOW: |
02f1175c JS |
4026 | ret_val = info->rflow; |
4027 | break; | |
1da177e4 | 4028 | case CYSETRTSDTR_INV: |
02f1175c JS |
4029 | info->rtsdtr_inv = (int)arg; |
4030 | ret_val = 0; | |
4031 | break; | |
1da177e4 | 4032 | case CYGETRTSDTR_INV: |
02f1175c JS |
4033 | ret_val = info->rtsdtr_inv; |
4034 | break; | |
1da177e4 | 4035 | case CYGETCD1400VER: |
02f1175c JS |
4036 | ret_val = info->chip_rev; |
4037 | break; | |
1da177e4 LT |
4038 | #ifndef CONFIG_CYZ_INTR |
4039 | case CYZSETPOLLCYCLE: | |
02f1175c JS |
4040 | cyz_polling_cycle = (arg * HZ) / 1000; |
4041 | ret_val = 0; | |
4042 | break; | |
1da177e4 | 4043 | case CYZGETPOLLCYCLE: |
02f1175c JS |
4044 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
4045 | break; | |
4046 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 4047 | case CYSETWAIT: |
02f1175c JS |
4048 | info->closing_wait = (unsigned short)arg *HZ / 100; |
4049 | ret_val = 0; | |
4050 | break; | |
1da177e4 | 4051 | case CYGETWAIT: |
02f1175c JS |
4052 | ret_val = info->closing_wait / (HZ / 100); |
4053 | break; | |
4054 | case TIOCGSERIAL: | |
4055 | ret_val = get_serial_info(info, argp); | |
4056 | break; | |
4057 | case TIOCSSERIAL: | |
4058 | ret_val = set_serial_info(info, argp); | |
4059 | break; | |
4060 | case TIOCSERGETLSR: /* Get line status register */ | |
4061 | ret_val = get_lsr_info(info, argp); | |
4062 | break; | |
4063 | /* | |
4064 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
4065 | * - mask passed in arg for lines of interest | |
4066 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
4067 | * Caller should use TIOCGICOUNT to see which one it was | |
4068 | */ | |
1da177e4 | 4069 | case TIOCMIWAIT: |
1da177e4 | 4070 | CY_LOCK(info, flags); |
02f1175c | 4071 | /* note the counters on entry */ |
2c7fea99 | 4072 | cnow = info->icount; |
1da177e4 | 4073 | CY_UNLOCK(info, flags); |
2c7fea99 JS |
4074 | ret_val = wait_event_interruptible(info->delta_msr_wait, ({ |
4075 | cprev = cnow; | |
02f1175c JS |
4076 | CY_LOCK(info, flags); |
4077 | cnow = info->icount; /* atomic copy */ | |
4078 | CY_UNLOCK(info, flags); | |
4079 | ||
2c7fea99 JS |
4080 | ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
4081 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
4082 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4083 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)); | |
4084 | })); | |
4085 | break; | |
1da177e4 | 4086 | |
02f1175c JS |
4087 | /* |
4088 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
4089 | * Return: write counters to the user passed counter struct | |
4090 | * NB: both 1->0 and 0->1 transitions are counted except for | |
4091 | * RI where only 0->1 is counted. | |
4092 | */ | |
1da177e4 | 4093 | case TIOCGICOUNT: |
02f1175c JS |
4094 | CY_LOCK(info, flags); |
4095 | cnow = info->icount; | |
4096 | CY_UNLOCK(info, flags); | |
4097 | p_cuser = argp; | |
4098 | ret_val = put_user(cnow.cts, &p_cuser->cts); | |
4099 | if (ret_val) | |
4100 | return ret_val; | |
4101 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); | |
4102 | if (ret_val) | |
4103 | return ret_val; | |
4104 | ret_val = put_user(cnow.rng, &p_cuser->rng); | |
4105 | if (ret_val) | |
4106 | return ret_val; | |
4107 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); | |
4108 | if (ret_val) | |
4109 | return ret_val; | |
4110 | ret_val = put_user(cnow.rx, &p_cuser->rx); | |
4111 | if (ret_val) | |
4112 | return ret_val; | |
4113 | ret_val = put_user(cnow.tx, &p_cuser->tx); | |
4114 | if (ret_val) | |
4115 | return ret_val; | |
4116 | ret_val = put_user(cnow.frame, &p_cuser->frame); | |
4117 | if (ret_val) | |
4118 | return ret_val; | |
4119 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); | |
4120 | if (ret_val) | |
4121 | return ret_val; | |
4122 | ret_val = put_user(cnow.parity, &p_cuser->parity); | |
4123 | if (ret_val) | |
4124 | return ret_val; | |
4125 | ret_val = put_user(cnow.brk, &p_cuser->brk); | |
4126 | if (ret_val) | |
4127 | return ret_val; | |
4128 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); | |
4129 | if (ret_val) | |
4130 | return ret_val; | |
4131 | ret_val = 0; | |
4132 | break; | |
4133 | default: | |
4134 | ret_val = -ENOIOCTLCMD; | |
4135 | } | |
1da177e4 LT |
4136 | |
4137 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4138 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 LT |
4139 | #endif |
4140 | ||
02f1175c JS |
4141 | return ret_val; |
4142 | } /* cy_ioctl */ | |
1da177e4 LT |
4143 | |
4144 | /* | |
4145 | * This routine allows the tty driver to be notified when | |
4146 | * device's termios settings have changed. Note that a | |
4147 | * well-designed tty driver should be prepared to accept the case | |
4148 | * where old == NULL, and try to do something rational. | |
4149 | */ | |
02f1175c | 4150 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 4151 | { |
cab9bdd1 | 4152 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
4153 | |
4154 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4155 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
4156 | #endif |
4157 | ||
02f1175c JS |
4158 | if (tty->termios->c_cflag == old_termios->c_cflag && |
4159 | (tty->termios->c_iflag & (IXON | IXANY)) == | |
4160 | (old_termios->c_iflag & (IXON | IXANY))) | |
4161 | return; | |
4162 | set_line_char(info); | |
4163 | ||
4164 | if ((old_termios->c_cflag & CRTSCTS) && | |
4165 | !(tty->termios->c_cflag & CRTSCTS)) { | |
4166 | tty->hw_stopped = 0; | |
4167 | cy_start(tty); | |
4168 | } | |
1da177e4 | 4169 | #if 0 |
02f1175c JS |
4170 | /* |
4171 | * No need to wake up processes in open wait, since they | |
4172 | * sample the CLOCAL flag once, and don't recheck it. | |
4173 | * XXX It's not clear whether the current behavior is correct | |
4174 | * or not. Hence, this may change..... | |
4175 | */ | |
4176 | if (!(old_termios->c_cflag & CLOCAL) && | |
4177 | (tty->termios->c_cflag & CLOCAL)) | |
4178 | wake_up_interruptible(&info->open_wait); | |
1da177e4 | 4179 | #endif |
02f1175c | 4180 | } /* cy_set_termios */ |
1da177e4 LT |
4181 | |
4182 | /* This function is used to send a high-priority XON/XOFF character to | |
4183 | the device. | |
4184 | */ | |
02f1175c | 4185 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 4186 | { |
cab9bdd1 | 4187 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
4188 | struct cyclades_card *card; |
4189 | int channel; | |
1da177e4 | 4190 | |
02f1175c | 4191 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
4192 | return; |
4193 | ||
02f1175c | 4194 | info->x_char = ch; |
1da177e4 LT |
4195 | |
4196 | if (ch) | |
02f1175c | 4197 | cy_start(tty); |
1da177e4 LT |
4198 | |
4199 | card = info->card; | |
875b206b | 4200 | channel = info->line - card->first_line; |
1da177e4 | 4201 | |
875b206b | 4202 | if (IS_CYC_Z(*card)) { |
02f1175c | 4203 | if (ch == STOP_CHAR(tty)) |
875b206b | 4204 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 4205 | else if (ch == START_CHAR(tty)) |
875b206b | 4206 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
4207 | } |
4208 | } | |
4209 | ||
4210 | /* This routine is called by the upper-layer tty layer to signal | |
4211 | that incoming characters should be throttled because the input | |
4212 | buffers are close to full. | |
4213 | */ | |
02f1175c | 4214 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 4215 | { |
cab9bdd1 | 4216 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4217 | struct cyclades_card *card; |
02f1175c JS |
4218 | unsigned long flags; |
4219 | void __iomem *base_addr; | |
875b206b | 4220 | int chip, channel, index; |
1da177e4 LT |
4221 | |
4222 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 4223 | char buf[64]; |
1da177e4 | 4224 | |
21719191 | 4225 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 4226 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
4227 | #endif |
4228 | ||
02f1175c JS |
4229 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) { |
4230 | return; | |
4231 | } | |
4232 | ||
4233 | card = info->card; | |
4234 | ||
4235 | if (I_IXOFF(tty)) { | |
875b206b | 4236 | if (!IS_CYC_Z(*card)) |
02f1175c JS |
4237 | cy_send_xchar(tty, STOP_CHAR(tty)); |
4238 | else | |
4239 | info->throttle = 1; | |
4240 | } | |
1da177e4 | 4241 | |
02f1175c | 4242 | if (tty->termios->c_cflag & CRTSCTS) { |
875b206b JS |
4243 | channel = info->line - card->first_line; |
4244 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
4245 | chip = channel >> 2; |
4246 | channel &= 0x03; | |
875b206b JS |
4247 | index = card->bus_index; |
4248 | base_addr = card->base_addr + | |
02f1175c JS |
4249 | (cy_chip_offset[chip] << index); |
4250 | ||
4251 | CY_LOCK(info, flags); | |
4252 | cy_writeb(base_addr + (CyCAR << index), | |
4253 | (u_char) channel); | |
4254 | if (info->rtsdtr_inv) { | |
4255 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4256 | ~CyDTR); | |
4257 | } else { | |
4258 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4259 | ~CyRTS); | |
4260 | } | |
4261 | CY_UNLOCK(info, flags); | |
4262 | } else { | |
4263 | info->throttle = 1; | |
4264 | } | |
4265 | } | |
02f1175c | 4266 | } /* cy_throttle */ |
1da177e4 LT |
4267 | |
4268 | /* | |
4269 | * This routine notifies the tty driver that it should signal | |
4270 | * that characters can now be sent to the tty without fear of | |
4271 | * overrunning the input buffers of the line disciplines. | |
4272 | */ | |
02f1175c | 4273 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 4274 | { |
cab9bdd1 | 4275 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4276 | struct cyclades_card *card; |
02f1175c JS |
4277 | unsigned long flags; |
4278 | void __iomem *base_addr; | |
875b206b | 4279 | int chip, channel, index; |
1da177e4 LT |
4280 | |
4281 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
4282 | char buf[64]; |
4283 | ||
21719191 JS |
4284 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
4285 | tty_name(tty, buf), tty->ldisc.chars_in_buffer(tty),info->line); | |
1da177e4 LT |
4286 | #endif |
4287 | ||
02f1175c JS |
4288 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) { |
4289 | return; | |
4290 | } | |
1da177e4 | 4291 | |
02f1175c JS |
4292 | if (I_IXOFF(tty)) { |
4293 | if (info->x_char) | |
4294 | info->x_char = 0; | |
4295 | else | |
4296 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 4297 | } |
1da177e4 | 4298 | |
02f1175c JS |
4299 | if (tty->termios->c_cflag & CRTSCTS) { |
4300 | card = info->card; | |
875b206b JS |
4301 | channel = info->line - card->first_line; |
4302 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
4303 | chip = channel >> 2; |
4304 | channel &= 0x03; | |
875b206b JS |
4305 | index = card->bus_index; |
4306 | base_addr = card->base_addr + | |
02f1175c JS |
4307 | (cy_chip_offset[chip] << index); |
4308 | ||
4309 | CY_LOCK(info, flags); | |
4310 | cy_writeb(base_addr + (CyCAR << index), | |
4311 | (u_char) channel); | |
4312 | if (info->rtsdtr_inv) { | |
4313 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4314 | CyDTR); | |
4315 | } else { | |
4316 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4317 | CyRTS); | |
4318 | } | |
4319 | CY_UNLOCK(info, flags); | |
4320 | } else { | |
4321 | info->throttle = 0; | |
4322 | } | |
4323 | } | |
02f1175c | 4324 | } /* cy_unthrottle */ |
1da177e4 LT |
4325 | |
4326 | /* cy_start and cy_stop provide software output flow control as a | |
4327 | function of XON/XOFF, software CTS, and other such stuff. | |
4328 | */ | |
02f1175c | 4329 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 4330 | { |
02f1175c | 4331 | struct cyclades_card *cinfo; |
cab9bdd1 | 4332 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4333 | void __iomem *base_addr; |
4334 | int chip, channel, index; | |
4335 | unsigned long flags; | |
1da177e4 LT |
4336 | |
4337 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4338 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
4339 | #endif |
4340 | ||
02f1175c JS |
4341 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
4342 | return; | |
1da177e4 | 4343 | |
875b206b | 4344 | cinfo = info->card; |
02f1175c JS |
4345 | channel = info->line - cinfo->first_line; |
4346 | if (!IS_CYC_Z(*cinfo)) { | |
4347 | index = cinfo->bus_index; | |
4348 | chip = channel >> 2; | |
4349 | channel &= 0x03; | |
875b206b | 4350 | base_addr = info->card->base_addr + |
02f1175c | 4351 | (cy_chip_offset[chip] << index); |
1da177e4 | 4352 | |
02f1175c JS |
4353 | CY_LOCK(info, flags); |
4354 | cy_writeb(base_addr + (CyCAR << index), | |
4355 | (u_char)(channel & 0x0003)); /* index channel */ | |
4356 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 4357 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
4358 | CY_UNLOCK(info, flags); |
4359 | } else { | |
096dcfce | 4360 | /* Nothing to do! */ |
02f1175c | 4361 | } |
02f1175c | 4362 | } /* cy_stop */ |
1da177e4 | 4363 | |
02f1175c | 4364 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 4365 | { |
02f1175c | 4366 | struct cyclades_card *cinfo; |
cab9bdd1 | 4367 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4368 | void __iomem *base_addr; |
4369 | int chip, channel, index; | |
4370 | unsigned long flags; | |
1da177e4 LT |
4371 | |
4372 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4373 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
4374 | #endif |
4375 | ||
02f1175c JS |
4376 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
4377 | return; | |
1da177e4 | 4378 | |
875b206b | 4379 | cinfo = info->card; |
02f1175c JS |
4380 | channel = info->line - cinfo->first_line; |
4381 | index = cinfo->bus_index; | |
4382 | if (!IS_CYC_Z(*cinfo)) { | |
4383 | chip = channel >> 2; | |
4384 | channel &= 0x03; | |
875b206b | 4385 | base_addr = info->card->base_addr + |
02f1175c | 4386 | (cy_chip_offset[chip] << index); |
1da177e4 | 4387 | |
02f1175c JS |
4388 | CY_LOCK(info, flags); |
4389 | cy_writeb(base_addr + (CyCAR << index), (u_char) (channel & 0x0003)); /* index channel */ | |
4390 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 4391 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
4392 | CY_UNLOCK(info, flags); |
4393 | } else { | |
096dcfce | 4394 | /* Nothing to do! */ |
02f1175c | 4395 | } |
02f1175c | 4396 | } /* cy_start */ |
1da177e4 | 4397 | |
02f1175c | 4398 | static void cy_flush_buffer(struct tty_struct *tty) |
1da177e4 | 4399 | { |
cab9bdd1 | 4400 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
4401 | struct cyclades_card *card; |
4402 | int channel, retval; | |
02f1175c JS |
4403 | unsigned long flags; |
4404 | ||
1da177e4 | 4405 | #ifdef CY_DEBUG_IO |
21719191 | 4406 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); |
1da177e4 LT |
4407 | #endif |
4408 | ||
02f1175c JS |
4409 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) |
4410 | return; | |
1da177e4 | 4411 | |
02f1175c | 4412 | card = info->card; |
875b206b | 4413 | channel = info->line - card->first_line; |
1da177e4 | 4414 | |
1da177e4 | 4415 | CY_LOCK(info, flags); |
02f1175c | 4416 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
1da177e4 | 4417 | CY_UNLOCK(info, flags); |
1da177e4 | 4418 | |
875b206b | 4419 | if (IS_CYC_Z(*card)) { /* If it is a Z card, flush the on-board |
02f1175c JS |
4420 | buffers as well */ |
4421 | CY_LOCK(info, flags); | |
875b206b | 4422 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); |
02f1175c | 4423 | if (retval != 0) { |
21719191 JS |
4424 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " |
4425 | "was %x\n", info->line, retval); | |
02f1175c JS |
4426 | } |
4427 | CY_UNLOCK(info, flags); | |
4428 | } | |
4429 | tty_wakeup(tty); | |
02f1175c | 4430 | } /* cy_flush_buffer */ |
1da177e4 LT |
4431 | |
4432 | /* | |
4433 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
4434 | */ | |
02f1175c | 4435 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 4436 | { |
cab9bdd1 | 4437 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 4438 | |
1da177e4 | 4439 | #ifdef CY_DEBUG_OTHER |
21719191 | 4440 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
4441 | #endif |
4442 | ||
02f1175c JS |
4443 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
4444 | return; | |
1da177e4 | 4445 | |
02f1175c JS |
4446 | cy_flush_buffer(tty); |
4447 | shutdown(info); | |
4448 | info->event = 0; | |
4449 | info->count = 0; | |
1da177e4 | 4450 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
4451 | printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n", |
4452 | current->pid); | |
1da177e4 | 4453 | #endif |
02f1175c JS |
4454 | info->tty = NULL; |
4455 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
4456 | wake_up_interruptible(&info->open_wait); | |
4457 | } /* cy_hangup */ | |
1da177e4 LT |
4458 | |
4459 | /* | |
4460 | * --------------------------------------------------------------------- | |
4461 | * cy_init() and friends | |
4462 | * | |
4463 | * cy_init() is called at boot-time to initialize the serial driver. | |
4464 | * --------------------------------------------------------------------- | |
4465 | */ | |
4466 | ||
875b206b | 4467 | static void __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
4468 | { |
4469 | struct cyclades_port *info; | |
4470 | u32 mailbox; | |
4471 | unsigned int nports; | |
4472 | unsigned short chip_number; | |
4473 | int index, port; | |
4474 | ||
3046d50e JS |
4475 | spin_lock_init(&cinfo->card_lock); |
4476 | ||
c2ad4c75 | 4477 | if (IS_CYC_Z(*cinfo)) { /* Cyclades-Z */ |
0809e267 JS |
4478 | mailbox = readl(&((struct RUNTIME_9060 __iomem *) |
4479 | cinfo->ctl_addr)->mail_box_0); | |
4480 | nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8; | |
4481 | cinfo->intr_enabled = 0; | |
4482 | cinfo->nports = 0; /* Will be correctly set later, after | |
4483 | Z FW is loaded */ | |
3046d50e JS |
4484 | } else { |
4485 | index = cinfo->bus_index; | |
4486 | nports = cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips; | |
4487 | } | |
4488 | ||
4489 | for (port = cinfo->first_line; port < cinfo->first_line + nports; | |
4490 | port++) { | |
4491 | info = &cy_port[port]; | |
4492 | memset(info, 0, sizeof(*info)); | |
4493 | info->magic = CYCLADES_MAGIC; | |
875b206b | 4494 | info->card = cinfo; |
3046d50e JS |
4495 | info->line = port; |
4496 | info->flags = STD_COM_FLAGS; | |
4497 | info->closing_wait = CLOSING_WAIT_DELAY; | |
4498 | info->close_delay = 5 * HZ / 10; | |
4499 | ||
4500 | INIT_WORK(&info->tqueue, do_softint); | |
4501 | init_waitqueue_head(&info->open_wait); | |
4502 | init_waitqueue_head(&info->close_wait); | |
2c7fea99 | 4503 | init_completion(&info->shutdown_wait); |
3046d50e JS |
4504 | init_waitqueue_head(&info->delta_msr_wait); |
4505 | ||
4506 | if (IS_CYC_Z(*cinfo)) { | |
0809e267 | 4507 | info->type = PORT_STARTECH; |
0809e267 JS |
4508 | if (mailbox == ZO_V1) |
4509 | info->xmit_fifo_size = CYZ_FIFO_SIZE; | |
4510 | else | |
3046d50e | 4511 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 4512 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
4513 | setup_timer(&cyz_rx_full_timer[port], |
4514 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 4515 | #endif |
3046d50e | 4516 | } else { |
0809e267 | 4517 | info->type = PORT_CIRRUS; |
0809e267 | 4518 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 4519 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
4520 | info->cor2 = CyETC; |
4521 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 4522 | |
0809e267 | 4523 | chip_number = (port - cinfo->first_line) / 4; |
3046d50e | 4524 | if ((info->chip_rev = readb(cinfo->base_addr + |
0809e267 JS |
4525 | (cy_chip_offset[chip_number] << |
4526 | index) + (CyGFRCR << index))) >= | |
4527 | CD1400_REV_J) { | |
4528 | /* It is a CD1400 rev. J or later */ | |
4529 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
4530 | info->tco = baud_co_60[13]; /* Tx CO */ | |
4531 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
4532 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
4533 | info->rtsdtr_inv = 1; |
4534 | } else { | |
4535 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
4536 | info->tco = baud_co_25[13]; /* Tx CO */ | |
4537 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
4538 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
4539 | info->rtsdtr_inv = 0; |
4540 | } | |
3046d50e JS |
4541 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
4542 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 4543 | } |
3046d50e | 4544 | |
0809e267 | 4545 | } |
3046d50e JS |
4546 | |
4547 | #ifndef CONFIG_CYZ_INTR | |
4548 | if (IS_CYC_Z(*cinfo) && !timer_pending(&cyz_timerlist)) { | |
4549 | mod_timer(&cyz_timerlist, jiffies + 1); | |
4550 | #ifdef CY_PCI_DEBUG | |
4551 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
4552 | #endif | |
4553 | } | |
4554 | #endif | |
0809e267 JS |
4555 | } |
4556 | ||
1da177e4 LT |
4557 | /* initialize chips on Cyclom-Y card -- return number of valid |
4558 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
4559 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
4560 | int index) | |
1da177e4 | 4561 | { |
02f1175c JS |
4562 | unsigned int chip_number; |
4563 | void __iomem *base_addr; | |
4564 | ||
4565 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
4566 | /* Cy_HwReset is 0x1400 */ | |
4567 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
4568 | /* Cy_ClrIntr is 0x1800 */ | |
4569 | udelay(500L); | |
4570 | ||
4571 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; chip_number++) { | |
4572 | base_addr = | |
4573 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
4574 | mdelay(1); | |
db05c3b1 | 4575 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
4576 | /************* |
4577 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
4578 | chip_number, (unsigned long)base_addr); | |
4579 | *************/ | |
4580 | return chip_number; | |
4581 | } | |
4582 | ||
4583 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
4584 | udelay(10L); | |
4585 | ||
4586 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
4587 | cannot distinguish between references to chip 0 and a non- | |
4588 | existent chip 4. If the preceding clearing of the supposed | |
4589 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
4590 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
4591 | */ | |
db05c3b1 | 4592 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
4593 | (cy_chip_offset[0] << index) + |
4594 | (CyGFRCR << index)) == 0) { | |
4595 | return chip_number; | |
4596 | } | |
4597 | ||
4598 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
4599 | mdelay(1); | |
4600 | ||
db05c3b1 | 4601 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
4602 | /* |
4603 | printk(" chip #%d at %#6lx is not responding ", | |
4604 | chip_number, (unsigned long)base_addr); | |
4605 | printk("(GFRCR stayed 0)\n", | |
4606 | */ | |
4607 | return chip_number; | |
4608 | } | |
db05c3b1 | 4609 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
4610 | 0x40) { |
4611 | /* | |
4612 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
4613 | "%#2x)\n", | |
4614 | chip_number, (unsigned long)base_addr, | |
4615 | base_addr[CyGFRCR<<index]); | |
4616 | */ | |
4617 | return chip_number; | |
4618 | } | |
4619 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 4620 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
4621 | /* It is a CD1400 rev. J or later */ |
4622 | /* Impossible to reach 5ms with this chip. | |
4623 | Changed to 2ms instead (f = 500 Hz). */ | |
4624 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
4625 | } else { | |
4626 | /* f = 200 Hz */ | |
4627 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
4628 | } | |
1da177e4 | 4629 | |
02f1175c JS |
4630 | /* |
4631 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
4632 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 4633 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
4634 | */ |
4635 | } | |
4636 | return chip_number; | |
4637 | } /* cyy_init_card */ | |
1da177e4 LT |
4638 | |
4639 | /* | |
4640 | * --------------------------------------------------------------------- | |
4641 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
4642 | * sets global variables and return the number of ISA boards found. | |
4643 | * --------------------------------------------------------------------- | |
4644 | */ | |
02f1175c | 4645 | static int __init cy_detect_isa(void) |
1da177e4 LT |
4646 | { |
4647 | #ifdef CONFIG_ISA | |
02f1175c JS |
4648 | unsigned short cy_isa_irq, nboard; |
4649 | void __iomem *cy_isa_address; | |
4650 | unsigned short i, j, cy_isa_nchan; | |
1da177e4 | 4651 | #ifdef MODULE |
02f1175c | 4652 | int isparam = 0; |
1da177e4 LT |
4653 | #endif |
4654 | ||
02f1175c | 4655 | nboard = 0; |
1da177e4 LT |
4656 | |
4657 | #ifdef MODULE | |
4658 | /* Check for module parameters */ | |
02f1175c JS |
4659 | for (i = 0; i < NR_CARDS; i++) { |
4660 | if (maddr[i] || i) { | |
4661 | isparam = 1; | |
4662 | cy_isa_addresses[i] = maddr[i]; | |
4663 | } | |
4664 | if (!maddr[i]) | |
4665 | break; | |
1da177e4 LT |
4666 | } |
4667 | #endif | |
4668 | ||
02f1175c JS |
4669 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
4670 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
4671 | unsigned int isa_address = cy_isa_addresses[i]; | |
4672 | if (isa_address == 0x0000) { | |
096dcfce | 4673 | return nboard; |
02f1175c | 4674 | } |
1da177e4 | 4675 | |
02f1175c | 4676 | /* probe for CD1400... */ |
1da177e4 | 4677 | cy_isa_address = ioremap(isa_address, CyISA_Ywin); |
02f1175c JS |
4678 | cy_isa_nchan = CyPORTS_PER_CHIP * |
4679 | cyy_init_card(cy_isa_address, 0); | |
4680 | if (cy_isa_nchan == 0) { | |
4681 | continue; | |
4682 | } | |
1da177e4 LT |
4683 | #ifdef MODULE |
4684 | if (isparam && irq[i]) | |
02f1175c | 4685 | cy_isa_irq = irq[i]; |
1da177e4 LT |
4686 | else |
4687 | #endif | |
02f1175c JS |
4688 | /* find out the board's irq by probing */ |
4689 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
4690 | if (cy_isa_irq == 0) { | |
21719191 JS |
4691 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
4692 | "IRQ could not be detected.\n", | |
02f1175c | 4693 | (unsigned long)cy_isa_address); |
02f1175c JS |
4694 | continue; |
4695 | } | |
4696 | ||
4697 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
4698 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4699 | "more channels are available. Change NR_PORTS " | |
4700 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 4701 | (unsigned long)cy_isa_address); |
096dcfce | 4702 | return nboard; |
02f1175c JS |
4703 | } |
4704 | /* fill the next cy_card structure available */ | |
4705 | for (j = 0; j < NR_CARDS; j++) { | |
4706 | if (cy_card[j].base_addr == 0) | |
4707 | break; | |
4708 | } | |
4709 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
4710 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4711 | "more cards can be used. Change NR_CARDS in " | |
4712 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 4713 | (unsigned long)cy_isa_address); |
096dcfce | 4714 | return nboard; |
02f1175c JS |
4715 | } |
4716 | ||
4717 | /* allocate IRQ */ | |
4718 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
4719 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
4720 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
4721 | "could not allocate IRQ#%d.\n", | |
4722 | (unsigned long)cy_isa_address, cy_isa_irq); | |
096dcfce | 4723 | return nboard; |
02f1175c JS |
4724 | } |
4725 | ||
4726 | /* set cy_card */ | |
4727 | cy_card[j].base_addr = cy_isa_address; | |
4728 | cy_card[j].ctl_addr = NULL; | |
4729 | cy_card[j].irq = (int)cy_isa_irq; | |
4730 | cy_card[j].bus_index = 0; | |
4731 | cy_card[j].first_line = cy_next_channel; | |
4732 | cy_card[j].num_chips = cy_isa_nchan / 4; | |
875b206b | 4733 | cy_init_card(&cy_card[j]); |
02f1175c JS |
4734 | nboard++; |
4735 | ||
21719191 JS |
4736 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
4737 | "%d channels starting from port %d\n", | |
02f1175c JS |
4738 | j + 1, (unsigned long)cy_isa_address, |
4739 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
4740 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
4741 | ||
6ad1ccc1 JS |
4742 | for (j = cy_next_channel; |
4743 | j < cy_next_channel + cy_isa_nchan; j++) | |
4744 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
4745 | cy_next_channel += cy_isa_nchan; |
4746 | } | |
096dcfce | 4747 | return nboard; |
1da177e4 | 4748 | #else |
096dcfce | 4749 | return 0; |
02f1175c JS |
4750 | #endif /* CONFIG_ISA */ |
4751 | } /* cy_detect_isa */ | |
1da177e4 | 4752 | |
58936d8d JS |
4753 | #ifdef CONFIG_PCI |
4754 | static void __devinit plx_init(void __iomem * addr, __u32 initctl) | |
1da177e4 | 4755 | { |
02f1175c | 4756 | /* Reset PLX */ |
db05c3b1 | 4757 | cy_writel(addr + initctl, readl(addr + initctl) | 0x40000000); |
02f1175c | 4758 | udelay(100L); |
db05c3b1 | 4759 | cy_writel(addr + initctl, readl(addr + initctl) & ~0x40000000); |
02f1175c JS |
4760 | |
4761 | /* Reload Config. Registers from EEPROM */ | |
db05c3b1 | 4762 | cy_writel(addr + initctl, readl(addr + initctl) | 0x20000000); |
02f1175c | 4763 | udelay(100L); |
db05c3b1 | 4764 | cy_writel(addr + initctl, readl(addr + initctl) & ~0x20000000); |
1da177e4 LT |
4765 | } |
4766 | ||
6d8248e8 | 4767 | static int __devinit cy_init_Ze(struct RUNTIME_9060 __iomem *cy_pci_addr0, |
2b1da41f | 4768 | int cy_pci_irq, struct pci_dev *pdev) |
d407c781 | 4769 | { |
2b1da41f | 4770 | void __iomem *cy_pci_addr2; |
d407c781 JS |
4771 | unsigned int j; |
4772 | unsigned short cy_pci_nchan; | |
4773 | ||
2b1da41f JS |
4774 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ze_win); |
4775 | ||
d407c781 | 4776 | readl(&cy_pci_addr0->mail_box_0); |
21719191 JS |
4777 | dev_dbg(&pdev->dev, "new Cyclades-Z board. FPGA not loaded\n"); |
4778 | ||
d407c781 JS |
4779 | /* This must be the new Cyclades-Ze/PCI. */ |
4780 | cy_pci_nchan = ZE_V1_NPORTS; | |
4781 | ||
4782 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { | |
21719191 | 4783 | dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no channels " |
d407c781 | 4784 | "are available.\nChange NR_PORTS in cyclades.c " |
21719191 | 4785 | "and recompile kernel.\n"); |
d407c781 JS |
4786 | return -EIO; |
4787 | } | |
4788 | ||
4789 | /* fill the next cy_card structure available */ | |
4790 | for (j = 0; j < NR_CARDS; j++) { | |
4791 | if (cy_card[j].base_addr == 0) | |
4792 | break; | |
4793 | } | |
4794 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 | 4795 | dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no more " |
d407c781 | 4796 | "cards can be used.\nChange NR_CARDS in " |
21719191 | 4797 | "cyclades.c and recompile kernel.\n"); |
d407c781 JS |
4798 | return -EIO; |
4799 | } | |
4800 | #ifdef CONFIG_CYZ_INTR | |
4801 | /* allocate IRQ only if board has an IRQ */ | |
4802 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { | |
4803 | if (request_irq(cy_pci_irq, cyz_interrupt, | |
4804 | IRQF_SHARED, "Cyclades-Z", | |
4805 | &cy_card[j])) { | |
21719191 | 4806 | dev_err(&pdev->dev, "could not allocate IRQ.\n"); |
d407c781 JS |
4807 | return -EIO; |
4808 | } | |
4809 | } | |
4810 | #endif /* CONFIG_CYZ_INTR */ | |
4811 | ||
4812 | /* set cy_card */ | |
d407c781 JS |
4813 | cy_card[j].base_addr = cy_pci_addr2; |
4814 | cy_card[j].ctl_addr = cy_pci_addr0; | |
80fada50 | 4815 | cy_card[j].irq = cy_pci_irq; |
d407c781 JS |
4816 | cy_card[j].bus_index = 1; |
4817 | cy_card[j].first_line = cy_next_channel; | |
4818 | cy_card[j].num_chips = -1; | |
875b206b | 4819 | cy_init_card(&cy_card[j]); |
38d09093 | 4820 | pci_set_drvdata(pdev, &cy_card[j]); |
d407c781 | 4821 | |
21719191 JS |
4822 | dev_info(&pdev->dev, "Cyclades-Ze/PCI #%d found: %d channels starting " |
4823 | "from port %d.\n", j + 1, cy_pci_nchan, cy_next_channel); | |
d407c781 | 4824 | |
6ad1ccc1 JS |
4825 | for (j = cy_next_channel; j < cy_next_channel + cy_pci_nchan; j++) |
4826 | tty_register_device(cy_serial_driver, j, &pdev->dev); | |
d407c781 JS |
4827 | cy_next_channel += cy_pci_nchan; |
4828 | ||
4829 | return 0; | |
4830 | } | |
4831 | ||
58936d8d JS |
4832 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
4833 | const struct pci_device_id *ent) | |
1da177e4 | 4834 | { |
02f1175c | 4835 | unsigned char cyy_rev_id; |
80fada50 | 4836 | int cy_pci_irq; |
6d8248e8 | 4837 | __u32 mailbox; |
02f1175c | 4838 | void __iomem *cy_pci_addr0, *cy_pci_addr2; |
58936d8d JS |
4839 | unsigned int device_id; |
4840 | unsigned short j, cy_pci_nchan, plx_ver; | |
d407c781 | 4841 | int retval; |
02f1175c | 4842 | |
58936d8d JS |
4843 | retval = pci_enable_device(pdev); |
4844 | if (retval) { | |
4845 | dev_err(&pdev->dev, "cannot enable device\n"); | |
4846 | return retval; | |
4847 | } | |
1da177e4 | 4848 | |
58936d8d JS |
4849 | /* read PCI configuration area */ |
4850 | cy_pci_irq = pdev->irq; | |
58936d8d | 4851 | pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id); |
1da177e4 | 4852 | |
58936d8d | 4853 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 4854 | |
58936d8d JS |
4855 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
4856 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
21719191 | 4857 | dev_dbg(&pdev->dev, "Cyclom-Y/PCI found\n"); |
1da177e4 | 4858 | |
58936d8d | 4859 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
21719191 | 4860 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly " |
58936d8d JS |
4861 | "set. Ignoring it...\n"); |
4862 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
4863 | } | |
1da177e4 | 4864 | |
58936d8d JS |
4865 | /* Although we don't use this I/O region, we should |
4866 | request it from the kernel anyway, to avoid problems | |
4867 | with other drivers accessing it. */ | |
4868 | retval = pci_request_regions(pdev, "Cyclom-Y"); | |
4869 | if (retval) { | |
21719191 | 4870 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
58936d8d JS |
4871 | return retval; |
4872 | } | |
4873 | #if defined(__alpha__) | |
4874 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
21719191 JS |
4875 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for " |
4876 | "low addresses on Alpha systems.\n"); | |
58936d8d JS |
4877 | return -EIO; |
4878 | } | |
1da177e4 | 4879 | #endif |
58936d8d JS |
4880 | cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Yctl); |
4881 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ywin); | |
1da177e4 | 4882 | |
21719191 JS |
4883 | dev_dbg(&pdev->dev, "Cyclom-Y/PCI: relocate winaddr=0x%p " |
4884 | "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0); | |
4885 | ||
58936d8d JS |
4886 | cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP * |
4887 | cyy_init_card(cy_pci_addr2, 1)); | |
4888 | if (cy_pci_nchan == 0) { | |
21719191 JS |
4889 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
4890 | "Serial-Modules\n"); | |
58936d8d JS |
4891 | return -EIO; |
4892 | } | |
4893 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { | |
21719191 JS |
4894 | dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no " |
4895 | "channels are available. Change NR_PORTS in " | |
4896 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
4897 | return -EIO; |
4898 | } | |
4899 | /* fill the next cy_card structure available */ | |
4900 | for (j = 0; j < NR_CARDS; j++) { | |
4901 | if (cy_card[j].base_addr == 0) | |
02f1175c | 4902 | break; |
58936d8d JS |
4903 | } |
4904 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
4905 | dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no more " |
4906 | "cards can be used. Change NR_CARDS in " | |
4907 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
4908 | return -EIO; |
4909 | } | |
02f1175c | 4910 | |
58936d8d JS |
4911 | /* allocate IRQ */ |
4912 | retval = request_irq(cy_pci_irq, cyy_interrupt, | |
4913 | IRQF_SHARED, "Cyclom-Y", &cy_card[j]); | |
4914 | if (retval) { | |
21719191 | 4915 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
58936d8d JS |
4916 | return retval; |
4917 | } | |
02f1175c | 4918 | |
58936d8d | 4919 | /* set cy_card */ |
58936d8d JS |
4920 | cy_card[j].base_addr = cy_pci_addr2; |
4921 | cy_card[j].ctl_addr = cy_pci_addr0; | |
80fada50 | 4922 | cy_card[j].irq = cy_pci_irq; |
58936d8d JS |
4923 | cy_card[j].bus_index = 1; |
4924 | cy_card[j].first_line = cy_next_channel; | |
4925 | cy_card[j].num_chips = cy_pci_nchan / 4; | |
875b206b | 4926 | cy_init_card(&cy_card[j]); |
58936d8d | 4927 | pci_set_drvdata(pdev, &cy_card[j]); |
02f1175c | 4928 | |
58936d8d JS |
4929 | /* enable interrupts in the PCI interface */ |
4930 | plx_ver = readb(cy_pci_addr2 + CyPLX_VER) & 0x0f; | |
4931 | switch (plx_ver) { | |
4932 | case PLX_9050: | |
4933 | ||
4934 | cy_writeb(cy_pci_addr0 + 0x4c, 0x43); | |
02f1175c | 4935 | break; |
02f1175c | 4936 | |
58936d8d JS |
4937 | case PLX_9060: |
4938 | case PLX_9080: | |
4939 | default: /* Old boards, use PLX_9060 */ | |
02f1175c JS |
4940 | |
4941 | plx_init(cy_pci_addr0, 0x6c); | |
58936d8d JS |
4942 | /* For some yet unknown reason, once the PLX9060 reloads |
4943 | the EEPROM, the IRQ is lost and, thus, we have to | |
4944 | re-write it to the PCI config. registers. | |
4945 | This will remain here until we find a permanent | |
4946 | fix. */ | |
02f1175c | 4947 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, |
58936d8d | 4948 | cy_pci_irq); |
02f1175c | 4949 | |
58936d8d JS |
4950 | cy_writew(cy_pci_addr0 + 0x68, |
4951 | readw(cy_pci_addr0 + 0x68) | 0x0900); | |
4952 | break; | |
4953 | } | |
02f1175c | 4954 | |
21719191 JS |
4955 | dev_info(&pdev->dev, "Cyclom-Y/PCI #%d found: %d channels " |
4956 | "starting from port %d.\n", j + 1, cy_pci_nchan, | |
4957 | cy_next_channel); | |
4958 | ||
6ad1ccc1 JS |
4959 | for (j = cy_next_channel; |
4960 | j < cy_next_channel + cy_pci_nchan; j++) | |
4961 | tty_register_device(cy_serial_driver, j, &pdev->dev); | |
1da177e4 | 4962 | |
58936d8d JS |
4963 | cy_next_channel += cy_pci_nchan; |
4964 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
21719191 JS |
4965 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for " |
4966 | "low addresses\n"); | |
58936d8d JS |
4967 | return -EIO; |
4968 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { | |
21719191 JS |
4969 | dev_dbg(&pdev->dev, "Cyclades-Z/PCI found\n"); |
4970 | ||
58936d8d JS |
4971 | cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Zctl); |
4972 | ||
4973 | /* Disable interrupts on the PLX before resetting it */ | |
4974 | cy_writew(cy_pci_addr0 + 0x68, | |
4975 | readw(cy_pci_addr0 + 0x68) & ~0x0900); | |
4976 | ||
4977 | plx_init(cy_pci_addr0, 0x6c); | |
4978 | /* For some yet unknown reason, once the PLX9060 reloads | |
4979 | the EEPROM, the IRQ is lost and, thus, we have to | |
4980 | re-write it to the PCI config. registers. | |
4981 | This will remain here until we find a permanent | |
4982 | fix. */ | |
80fada50 | 4983 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); |
02f1175c | 4984 | |
58936d8d JS |
4985 | mailbox = (__u32)readl(&((struct RUNTIME_9060 __iomem *) |
4986 | cy_pci_addr0)->mail_box_0); | |
4987 | ||
4988 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
21719191 | 4989 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly " |
58936d8d JS |
4990 | "set. Ignoring it...\n"); |
4991 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
4992 | } | |
4993 | ||
4994 | /* Although we don't use this I/O region, we should | |
4995 | request it from the kernel anyway, to avoid problems | |
4996 | with other drivers accessing it. */ | |
4997 | retval = pci_request_regions(pdev, "Cyclades-Z"); | |
4998 | if (retval) { | |
21719191 | 4999 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
58936d8d JS |
5000 | return retval; |
5001 | } | |
5002 | ||
5003 | if (mailbox == ZE_V1) { | |
6d8248e8 | 5004 | retval = cy_init_Ze(cy_pci_addr0, cy_pci_irq, pdev); |
58936d8d JS |
5005 | return retval; |
5006 | } else { | |
5007 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Zwin); | |
5008 | } | |
1da177e4 | 5009 | |
21719191 JS |
5010 | dev_dbg(&pdev->dev, "Cyclades-Z/PCI: relocate winaddr=0x%p " |
5011 | "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0); | |
1da177e4 | 5012 | #ifdef CY_PCI_DEBUG |
58936d8d JS |
5013 | if (mailbox == ZO_V1) { |
5014 | cy_writel(&((struct RUNTIME_9060 *) | |
5015 | (cy_pci_addr0))->loc_addr_base, | |
5016 | WIN_CREG); | |
21719191 JS |
5017 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA id %lx, " |
5018 | "ver %lx\n", (ulong)(0xff & | |
58936d8d | 5019 | readl(&((struct CUSTOM_REG *) |
21719191 JS |
5020 | cy_pci_addr2)->fpga_id)), |
5021 | (ulong)(0xff & readl(&((struct CUSTOM_REG *) | |
5022 | cy_pci_addr2)->fpga_version))); | |
58936d8d | 5023 | cy_writel(&((struct RUNTIME_9060 *) |
21719191 | 5024 | cy_pci_addr0)->loc_addr_base, WIN_RAM); |
58936d8d | 5025 | } else { |
21719191 JS |
5026 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New Cyclades-Z " |
5027 | "board. FPGA not loaded\n"); | |
58936d8d | 5028 | } |
1da177e4 | 5029 | #endif |
58936d8d JS |
5030 | /* The following clears the firmware id word. This |
5031 | ensures that the driver will not attempt to talk to | |
5032 | the board until it has been properly initialized. | |
5033 | */ | |
5034 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
5035 | cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L); | |
5036 | ||
5037 | /* This must be a Cyclades-8Zo/PCI. The extendable | |
5038 | version will have a different device_id and will | |
5039 | be allocated its maximum number of ports. */ | |
5040 | cy_pci_nchan = 8; | |
5041 | ||
5042 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { | |
21719191 JS |
5043 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
5044 | "channels are available. Change NR_PORTS in " | |
5045 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
5046 | return -EIO; |
5047 | } | |
1da177e4 | 5048 | |
58936d8d JS |
5049 | /* fill the next cy_card structure available */ |
5050 | for (j = 0; j < NR_CARDS; j++) { | |
5051 | if (cy_card[j].base_addr == 0) | |
5052 | break; | |
5053 | } | |
5054 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
5055 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
5056 | "more cards can be used. Change NR_CARDS in " | |
5057 | "cyclades.c and recompile kernel.\n"); | |
58936d8d JS |
5058 | return -EIO; |
5059 | } | |
02f1175c | 5060 | #ifdef CONFIG_CYZ_INTR |
58936d8d JS |
5061 | /* allocate IRQ only if board has an IRQ */ |
5062 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { | |
5063 | retval = request_irq(cy_pci_irq, cyz_interrupt, | |
5064 | IRQF_SHARED, "Cyclades-Z", | |
5065 | &cy_card[j]); | |
5066 | if (retval) { | |
21719191 | 5067 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
58936d8d | 5068 | return retval; |
02f1175c | 5069 | } |
58936d8d | 5070 | } |
02f1175c JS |
5071 | #endif /* CONFIG_CYZ_INTR */ |
5072 | ||
58936d8d | 5073 | /* set cy_card */ |
58936d8d JS |
5074 | cy_card[j].base_addr = cy_pci_addr2; |
5075 | cy_card[j].ctl_addr = cy_pci_addr0; | |
80fada50 | 5076 | cy_card[j].irq = cy_pci_irq; |
58936d8d JS |
5077 | cy_card[j].bus_index = 1; |
5078 | cy_card[j].first_line = cy_next_channel; | |
5079 | cy_card[j].num_chips = -1; | |
875b206b | 5080 | cy_init_card(&cy_card[j]); |
58936d8d JS |
5081 | pci_set_drvdata(pdev, &cy_card[j]); |
5082 | ||
21719191 JS |
5083 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI #%d found: %d channels " |
5084 | "starting from port %d.\n", j + 1, cy_pci_nchan, | |
5085 | cy_next_channel); | |
58936d8d | 5086 | |
6ad1ccc1 JS |
5087 | for (j = cy_next_channel; |
5088 | j < cy_next_channel + cy_pci_nchan; j++) | |
5089 | tty_register_device(cy_serial_driver, j, &pdev->dev); | |
58936d8d JS |
5090 | cy_next_channel += cy_pci_nchan; |
5091 | } | |
5092 | ||
5093 | return 0; | |
5094 | } | |
58936d8d | 5095 | |
6747cd93 | 5096 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 5097 | { |
38d09093 | 5098 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 5099 | unsigned int i; |
38d09093 | 5100 | |
85c93fa9 | 5101 | /* non-Z with old PLX */ |
c2ad4c75 JS |
5102 | if (!IS_CYC_Z(*cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
5103 | PLX_9050) | |
85c93fa9 JS |
5104 | cy_writeb(cinfo->ctl_addr + 0x4c, 0); |
5105 | else | |
5106 | #ifndef CONFIG_CYZ_INTR | |
c2ad4c75 | 5107 | if (!IS_CYC_Z(*cinfo)) |
85c93fa9 JS |
5108 | #endif |
5109 | cy_writew(cinfo->ctl_addr + 0x68, | |
5110 | readw(cinfo->ctl_addr + 0x68) & ~0x0900); | |
5111 | ||
38d09093 JS |
5112 | pci_iounmap(pdev, cinfo->base_addr); |
5113 | if (cinfo->ctl_addr) | |
5114 | pci_iounmap(pdev, cinfo->ctl_addr); | |
5115 | if (cinfo->irq | |
5116 | #ifndef CONFIG_CYZ_INTR | |
c2ad4c75 | 5117 | && !IS_CYC_Z(*cinfo) |
38d09093 JS |
5118 | #endif /* CONFIG_CYZ_INTR */ |
5119 | ) | |
5120 | free_irq(cinfo->irq, cinfo); | |
5121 | pci_release_regions(pdev); | |
5122 | ||
5123 | cinfo->base_addr = NULL; | |
f3851e73 JS |
5124 | for (i = cinfo->first_line; i < cinfo->first_line + cinfo->nports; i++){ |
5125 | cy_port[i].line = -1; | |
5126 | cy_port[i].magic = -1; | |
5127 | } | |
6ad1ccc1 JS |
5128 | for (i = cinfo->first_line; i < cinfo->first_line + |
5129 | cinfo->nports; i++) | |
5130 | tty_unregister_device(cy_serial_driver, i); | |
38d09093 JS |
5131 | } |
5132 | ||
6747cd93 JS |
5133 | static struct pci_driver cy_pci_driver = { |
5134 | .name = "cyclades", | |
5135 | .id_table = cy_pci_dev_id, | |
5136 | .probe = cy_pci_probe, | |
5137 | .remove = __devexit_p(cy_pci_remove) | |
5138 | }; | |
5139 | #endif | |
5140 | ||
02f1175c | 5141 | static int |
1da177e4 | 5142 | cyclades_get_proc_info(char *buf, char **start, off_t offset, int length, |
02f1175c | 5143 | int *eof, void *data) |
1da177e4 | 5144 | { |
02f1175c JS |
5145 | struct cyclades_port *info; |
5146 | int i; | |
5147 | int len = 0; | |
5148 | off_t begin = 0; | |
5149 | off_t pos = 0; | |
5150 | int size; | |
5151 | __u32 cur_jifs = jiffies; | |
5152 | ||
5153 | size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn " | |
5154 | "IdleIn Overruns Ldisc\n"); | |
5155 | ||
5156 | pos += size; | |
1da177e4 | 5157 | len += size; |
1da177e4 | 5158 | |
02f1175c JS |
5159 | /* Output one line for each known port */ |
5160 | for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) { | |
5161 | info = &cy_port[i]; | |
5162 | ||
5163 | if (info->count) | |
5164 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " | |
5165 | "%8lu %9lu %6ld\n", info->line, | |
096dcfce | 5166 | (cur_jifs - info->idle_stats.in_use) / HZ, |
02f1175c | 5167 | info->idle_stats.xmit_bytes, |
096dcfce | 5168 | (cur_jifs - info->idle_stats.xmit_idle) / HZ, |
02f1175c | 5169 | info->idle_stats.recv_bytes, |
096dcfce | 5170 | (cur_jifs - info->idle_stats.recv_idle) / HZ, |
02f1175c JS |
5171 | info->idle_stats.overruns, |
5172 | (long)info->tty->ldisc.num); | |
5173 | else | |
5174 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " | |
5175 | "%8lu %9lu %6ld\n", | |
5176 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
5177 | len += size; | |
5178 | pos = begin + len; | |
5179 | ||
5180 | if (pos < offset) { | |
5181 | len = 0; | |
5182 | begin = pos; | |
5183 | } | |
5184 | if (pos > offset + length) | |
5185 | goto done; | |
1da177e4 | 5186 | } |
02f1175c | 5187 | *eof = 1; |
1da177e4 | 5188 | done: |
02f1175c JS |
5189 | *start = buf + (offset - begin); /* Start of wanted data */ |
5190 | len -= (offset - begin); /* Start slop */ | |
5191 | if (len > length) | |
5192 | len = length; /* Ending slop */ | |
5193 | if (len < 0) | |
5194 | len = 0; | |
5195 | return len; | |
1da177e4 LT |
5196 | } |
5197 | ||
5198 | /* The serial driver boot-time initialization code! | |
5199 | Hardware I/O ports are mapped to character special devices on a | |
5200 | first found, first allocated manner. That is, this code searches | |
5201 | for Cyclom cards in the system. As each is found, it is probed | |
5202 | to discover how many chips (and thus how many ports) are present. | |
5203 | These ports are mapped to the tty ports 32 and upward in monotonic | |
5204 | fashion. If an 8-port card is replaced with a 16-port card, the | |
5205 | port mapping on a following card will shift. | |
5206 | ||
5207 | This approach is different from what is used in the other serial | |
5208 | device driver because the Cyclom is more properly a multiplexer, | |
5209 | not just an aggregation of serial ports on one card. | |
5210 | ||
5211 | If there are more cards with more ports than have been | |
5212 | statically allocated above, a warning is printed and the | |
5213 | extra ports are ignored. | |
5214 | */ | |
5215 | ||
b68e31d0 | 5216 | static const struct tty_operations cy_ops = { |
02f1175c JS |
5217 | .open = cy_open, |
5218 | .close = cy_close, | |
5219 | .write = cy_write, | |
5220 | .put_char = cy_put_char, | |
5221 | .flush_chars = cy_flush_chars, | |
5222 | .write_room = cy_write_room, | |
5223 | .chars_in_buffer = cy_chars_in_buffer, | |
5224 | .flush_buffer = cy_flush_buffer, | |
5225 | .ioctl = cy_ioctl, | |
5226 | .throttle = cy_throttle, | |
5227 | .unthrottle = cy_unthrottle, | |
5228 | .set_termios = cy_set_termios, | |
5229 | .stop = cy_stop, | |
5230 | .start = cy_start, | |
5231 | .hangup = cy_hangup, | |
5232 | .break_ctl = cy_break, | |
5233 | .wait_until_sent = cy_wait_until_sent, | |
5234 | .read_proc = cyclades_get_proc_info, | |
5235 | .tiocmget = cy_tiocmget, | |
5236 | .tiocmset = cy_tiocmset, | |
1da177e4 LT |
5237 | }; |
5238 | ||
02f1175c | 5239 | static int __init cy_init(void) |
1da177e4 | 5240 | { |
14a55a67 | 5241 | unsigned int i, nboards; |
9dacf3b2 | 5242 | int retval = -ENOMEM; |
02f1175c JS |
5243 | |
5244 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
5245 | if (!cy_serial_driver) | |
9dacf3b2 | 5246 | goto err; |
21719191 JS |
5247 | |
5248 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", | |
5249 | __DATE__, __TIME__); | |
02f1175c JS |
5250 | |
5251 | /* Initialize the tty_driver structure */ | |
5252 | ||
5253 | cy_serial_driver->owner = THIS_MODULE; | |
5254 | cy_serial_driver->driver_name = "cyclades"; | |
5255 | cy_serial_driver->name = "ttyC"; | |
5256 | cy_serial_driver->major = CYCLADES_MAJOR; | |
5257 | cy_serial_driver->minor_start = 0; | |
5258 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
5259 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
5260 | cy_serial_driver->init_termios = tty_std_termios; | |
5261 | cy_serial_driver->init_termios.c_cflag = | |
5262 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 5263 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
5264 | tty_set_operations(cy_serial_driver, &cy_ops); |
5265 | ||
9dacf3b2 JS |
5266 | retval = tty_register_driver(cy_serial_driver); |
5267 | if (retval) { | |
5268 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
5269 | goto err_frtty; | |
5270 | } | |
02f1175c | 5271 | |
f3851e73 JS |
5272 | for (i = 0; i < NR_PORTS; i++) { |
5273 | cy_port[i].line = -1; | |
5274 | cy_port[i].magic = -1; | |
5275 | } | |
5276 | ||
02f1175c JS |
5277 | /* the code below is responsible to find the boards. Each different |
5278 | type of board has its own detection routine. If a board is found, | |
5279 | the next cy_card structure available is set by the detection | |
5280 | routine. These functions are responsible for checking the | |
5281 | availability of cy_card and cy_port data structures and updating | |
5282 | the cy_next_channel. */ | |
5283 | ||
5284 | /* look for isa boards */ | |
14a55a67 | 5285 | nboards = cy_detect_isa(); |
02f1175c | 5286 | |
6747cd93 | 5287 | #ifdef CONFIG_PCI |
02f1175c | 5288 | /* look for pci boards */ |
6747cd93 JS |
5289 | retval = pci_register_driver(&cy_pci_driver); |
5290 | if (retval && !nboards) | |
9dacf3b2 | 5291 | goto err_unr; |
6747cd93 | 5292 | #endif |
9dacf3b2 JS |
5293 | |
5294 | return 0; | |
5295 | err_unr: | |
5296 | tty_unregister_driver(cy_serial_driver); | |
5297 | err_frtty: | |
5298 | put_tty_driver(cy_serial_driver); | |
5299 | err: | |
5300 | return retval; | |
02f1175c | 5301 | } /* cy_init */ |
1da177e4 | 5302 | |
02f1175c | 5303 | static void __exit cy_cleanup_module(void) |
1da177e4 | 5304 | { |
02f1175c | 5305 | int i, e1; |
1da177e4 LT |
5306 | |
5307 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 5308 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
5309 | #endif /* CONFIG_CYZ_INTR */ |
5310 | ||
02f1175c | 5311 | if ((e1 = tty_unregister_driver(cy_serial_driver))) |
21719191 JS |
5312 | printk(KERN_ERR "failed to unregister Cyclades serial " |
5313 | "driver(%d)\n", e1); | |
1da177e4 | 5314 | |
02f1175c | 5315 | put_tty_driver(cy_serial_driver); |
1da177e4 | 5316 | |
6747cd93 JS |
5317 | #ifdef CONFIG_PCI |
5318 | pci_unregister_driver(&cy_pci_driver); | |
5319 | #endif | |
5320 | ||
02f1175c JS |
5321 | for (i = 0; i < NR_CARDS; i++) { |
5322 | if (cy_card[i].base_addr) { | |
85c93fa9 JS |
5323 | /* clear interrupt */ |
5324 | cy_writeb(cy_card[i].base_addr + Cy_ClrIntr, 0); | |
02f1175c JS |
5325 | iounmap(cy_card[i].base_addr); |
5326 | if (cy_card[i].ctl_addr) | |
5327 | iounmap(cy_card[i].ctl_addr); | |
5328 | if (cy_card[i].irq | |
1da177e4 | 5329 | #ifndef CONFIG_CYZ_INTR |
c2ad4c75 | 5330 | && !IS_CYC_Z(cy_card[i]) |
1da177e4 | 5331 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c JS |
5332 | ) |
5333 | free_irq(cy_card[i].irq, &cy_card[i]); | |
6ad1ccc1 JS |
5334 | for (e1 = cy_card[i].first_line; |
5335 | e1 < cy_card[i].first_line + | |
5336 | cy_card[i].nports; e1++) | |
5337 | tty_unregister_device(cy_serial_driver, e1); | |
02f1175c JS |
5338 | } |
5339 | } | |
1da177e4 LT |
5340 | } /* cy_cleanup_module */ |
5341 | ||
5342 | module_init(cy_init); | |
5343 | module_exit(cy_cleanup_module); | |
5344 | ||
5345 | MODULE_LICENSE("GPL"); |