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Commit | Line | Data |
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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>. | |
1da177e4 | 13 | * |
c8e1693a | 14 | * Copyright (C) 2007 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
15 | * |
16 | * Much of the design and some of the code came from serial.c | |
17 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
18 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
19 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 20 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 LT |
21 | * |
22 | * This version supports shared IRQ's (only for PCI boards). | |
23 | * | |
24 | * $Log: cyclades.c,v $ | |
25 | * Prevent users from opening non-existing Z ports. | |
26 | * | |
27 | * Revision 2.3.2.8 2000/07/06 18:14:16 ivan | |
28 | * Fixed the PCI detection function to work properly on Alpha systems. | |
29 | * Implemented support for TIOCSERGETLSR ioctl. | |
30 | * Implemented full support for non-standard baud rates. | |
31 | * | |
32 | * Revision 2.3.2.7 2000/06/01 18:26:34 ivan | |
33 | * Request PLX I/O region, although driver doesn't use it, to avoid | |
34 | * problems with other drivers accessing it. | |
35 | * Removed count for on-board buffer characters in cy_chars_in_buffer | |
36 | * (Cyclades-Z only). | |
37 | * | |
38 | * Revision 2.3.2.6 2000/05/05 13:56:05 ivan | |
39 | * Driver now reports physical instead of virtual memory addresses. | |
40 | * Masks were added to some Cyclades-Z read accesses. | |
41 | * Implemented workaround for PLX9050 bug that would cause a system lockup | |
42 | * in certain systems, depending on the MMIO addresses allocated to the | |
43 | * board. | |
44 | * Changed the Tx interrupt programming in the CD1400 chips to boost up | |
45 | * performance (Cyclom-Y only). | |
46 | * Code is now compliant with the new module interface (module_[init|exit]). | |
47 | * Make use of the PCI helper functions to access PCI resources. | |
48 | * Did some code "housekeeping". | |
49 | * | |
50 | * Revision 2.3.2.5 2000/01/19 14:35:33 ivan | |
51 | * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. | |
52 | * | |
53 | * Revision 2.3.2.4 2000/01/17 09:19:40 ivan | |
54 | * Fixed SMP locking in Cyclom-Y interrupt handler. | |
55 | * | |
56 | * Revision 2.3.2.3 1999/12/28 12:11:39 ivan | |
57 | * Added a new cyclades_card field called nports to allow the driver to | |
58 | * know the exact number of ports found by the Z firmware after its load; | |
59 | * RX buffer contention prevention logic on interrupt op mode revisited | |
60 | * (Cyclades-Z only); | |
61 | * Revisited printk's for Z debug; | |
62 | * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; | |
63 | * | |
64 | * Revision 2.3.2.2 1999/10/01 11:27:43 ivan | |
65 | * Fixed bug in cyz_poll that would make all ports but port 0 | |
66 | * unable to transmit/receive data (Cyclades-Z only); | |
67 | * Implemented logic to prevent the RX buffer from being stuck with data | |
68 | * due to a driver / firmware race condition in interrupt op mode | |
69 | * (Cyclades-Z only); | |
70 | * Fixed bug in block_til_ready logic that would lead to a system crash; | |
71 | * Revisited cy_close spinlock usage; | |
72 | * | |
73 | * Revision 2.3.2.1 1999/09/28 11:01:22 ivan | |
74 | * Revisited CONFIG_PCI conditional compilation for PCI board support; | |
75 | * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; | |
76 | * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; | |
77 | * Removed CTS handling from the driver -- this is now completely handled | |
78 | * by the firmware (Cyclades-Z only); | |
79 | * Flush RX on-board buffers on a port open (Cyclades-Z only); | |
80 | * Fixed handling of ASYNC_SPD_* TTY flags; | |
81 | * Module unload now unmaps all memory area allocated by ioremap; | |
82 | * | |
83 | * Revision 2.3.1.1 1999/07/15 16:45:53 ivan | |
84 | * Removed CY_PROC conditional compilation; | |
85 | * Implemented SMP-awareness for the driver; | |
86 | * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] | |
87 | * functions; | |
88 | * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs | |
89 | * (irq=NN) as parameters (only for ISA boards); | |
90 | * Fixed bug in set_line_char that would prevent the Cyclades-Z | |
91 | * ports from being configured at speeds above 115.2Kbps; | |
92 | * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control | |
93 | * switching from working properly; | |
94 | * The driver now only prints IRQ info for the Cyclades-Z if it's | |
95 | * configured to work in interrupt mode; | |
96 | * | |
97 | * Revision 2.2.2.3 1999/06/28 11:13:29 ivan | |
98 | * Added support for interrupt mode operation for the Z cards; | |
99 | * Removed the driver inactivity control for the Z; | |
100 | * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when | |
101 | * the Z firmware is not loaded yet; | |
102 | * Replaced the "manual" Z Tx flush buffer by a call to a FW command of | |
103 | * same functionality; | |
104 | * Implemented workaround for IRQ setting loss on the PCI configuration | |
105 | * registers after a PCI bridge EEPROM reload (affects PLX9060 only); | |
106 | * | |
107 | * Revision 2.2.2.2 1999/05/14 17:18:15 ivan | |
108 | * /proc entry location changed to /proc/tty/driver/cyclades; | |
109 | * Added support to shared IRQ's (only for PCI boards); | |
110 | * Added support for Cobalt Qube2 systems; | |
111 | * IRQ [de]allocation scheme revisited; | |
112 | * BREAK implementation changed in order to make use of the 'break_ctl' | |
113 | * TTY facility; | |
114 | * Fixed typo in TTY structure field 'driver_name'; | |
115 | * Included a PCI bridge reset and EEPROM reload in the board | |
116 | * initialization code (for both Y and Z series). | |
117 | * | |
118 | * Revision 2.2.2.1 1999/04/08 16:17:43 ivan | |
119 | * Fixed a bug in cy_wait_until_sent that was preventing the port to be | |
120 | * closed properly after a SIGINT; | |
121 | * Module usage counter scheme revisited; | |
122 | * Added support to the upcoming Y PCI boards (i.e., support to additional | |
123 | * PCI Device ID's). | |
124 | * | |
125 | * Revision 2.2.1.10 1999/01/20 16:14:29 ivan | |
126 | * Removed all unnecessary page-alignement operations in ioremap calls | |
127 | * (ioremap is currently safe for these operations). | |
128 | * | |
129 | * Revision 2.2.1.9 1998/12/30 18:18:30 ivan | |
130 | * Changed access to PLX PCI bridge registers from I/O to MMIO, in | |
131 | * order to make PLX9050-based boards work with certain motherboards. | |
132 | * | |
133 | * Revision 2.2.1.8 1998/11/13 12:46:20 ivan | |
134 | * cy_close function now resets (correctly) the tty->closing flag; | |
135 | * JIFFIES_DIFF macro fixed. | |
136 | * | |
137 | * Revision 2.2.1.7 1998/09/03 12:07:28 ivan | |
138 | * Fixed bug in cy_close function, which was not informing HW of | |
139 | * which port should have the reception disabled before doing so; | |
140 | * fixed Cyclom-8YoP hardware detection bug. | |
141 | * | |
142 | * Revision 2.2.1.6 1998/08/20 17:15:39 ivan | |
143 | * Fixed bug in cy_close function, which causes malfunction | |
144 | * of one of the first 4 ports when a higher port is closed | |
145 | * (Cyclom-Y only). | |
146 | * | |
147 | * Revision 2.2.1.5 1998/08/10 18:10:28 ivan | |
148 | * Fixed Cyclom-4Yo hardware detection bug. | |
149 | * | |
150 | * Revision 2.2.1.4 1998/08/04 11:02:50 ivan | |
151 | * /proc/cyclades implementation with great collaboration of | |
152 | * Marc Lewis <marc@blarg.net>; | |
153 | * cyy_interrupt was changed to avoid occurrence of kernel oopses | |
154 | * during PPP operation. | |
155 | * | |
156 | * Revision 2.2.1.3 1998/06/01 12:09:10 ivan | |
157 | * General code review in order to comply with 2.1 kernel standards; | |
158 | * data loss prevention for slow devices revisited (cy_wait_until_sent | |
159 | * was created); | |
160 | * removed conditional compilation for new/old PCI structure support | |
161 | * (now the driver only supports the new PCI structure). | |
162 | * | |
163 | * Revision 2.2.1.1 1998/03/19 16:43:12 ivan | |
164 | * added conditional compilation for new/old PCI structure support; | |
165 | * removed kernel series (2.0.x / 2.1.x) conditional compilation. | |
166 | * | |
167 | * Revision 2.1.1.3 1998/03/16 18:01:12 ivan | |
168 | * cleaned up the data loss fix; | |
169 | * fixed XON/XOFF handling once more (Cyclades-Z); | |
170 | * general review of the driver routines; | |
171 | * introduction of a mechanism to prevent data loss with slow | |
172 | * printers, by forcing a delay before closing the port. | |
173 | * | |
174 | * Revision 2.1.1.2 1998/02/17 16:50:00 ivan | |
175 | * fixed detection/handling of new CD1400 in Ye boards; | |
176 | * fixed XON/XOFF handling (Cyclades-Z); | |
177 | * fixed data loss caused by a premature port close; | |
178 | * introduction of a flag that holds the CD1400 version ID per port | |
179 | * (used by the CYGETCD1400VER new ioctl). | |
180 | * | |
181 | * Revision 2.1.1.1 1997/12/03 17:31:19 ivan | |
182 | * Code review for the module cleanup routine; | |
183 | * fixed RTS and DTR status report for new CD1400's in get_modem_info; | |
184 | * includes anonymous changes regarding signal_pending. | |
185 | * | |
186 | * Revision 2.1 1997/11/01 17:42:41 ivan | |
187 | * Changes in the driver to support Alpha systems (except 8Zo V_1); | |
188 | * BREAK fix for the Cyclades-Z boards; | |
189 | * driver inactivity control by FW implemented; | |
190 | * introduction of flag that allows driver to take advantage of | |
191 | * a special CD1400 feature related to HW flow control; | |
192 | * added support for the CD1400 rev. J (Cyclom-Y boards); | |
193 | * introduction of ioctls to: | |
194 | * - control the rtsdtr_inv flag (Cyclom-Y); | |
195 | * - control the rflow flag (Cyclom-Y); | |
196 | * - adjust the polling interval (Cyclades-Z); | |
197 | * | |
198 | * Revision 1.36.4.33 1997/06/27 19:00:00 ivan | |
199 | * Fixes related to kernel version conditional | |
200 | * compilation. | |
201 | * | |
202 | * Revision 1.36.4.32 1997/06/14 19:30:00 ivan | |
203 | * Compatibility issues between kernels 2.0.x and | |
204 | * 2.1.x (mainly related to clear_bit function). | |
205 | * | |
206 | * Revision 1.36.4.31 1997/06/03 15:30:00 ivan | |
207 | * Changes to define the memory window according to the | |
208 | * board type. | |
209 | * | |
210 | * Revision 1.36.4.30 1997/05/16 15:30:00 daniel | |
211 | * Changes to support new cycladesZ boards. | |
212 | * | |
213 | * Revision 1.36.4.29 1997/05/12 11:30:00 daniel | |
214 | * Merge of Bentson's and Daniel's version 1.36.4.28. | |
215 | * Corrects bug in cy_detect_pci: check if there are more | |
216 | * ports than the number of static structs allocated. | |
217 | * Warning message during initialization if this driver is | |
218 | * used with the new generation of cycladesZ boards. Those | |
219 | * will be supported only in next release of the driver. | |
220 | * Corrects bug in cy_detect_pci and cy_detect_isa that | |
221 | * returned wrong number of VALID boards, when a cyclomY | |
222 | * was found with no serial modules connected. | |
223 | * Changes to use current (2.1.x) kernel subroutine names | |
224 | * and created macros for compilation with 2.0.x kernel, | |
225 | * instead of the other way around. | |
226 | * | |
227 | * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson | |
228 | * Change queue_task_irq_off to queue_task_irq. | |
229 | * The inline function queue_task_irq_off (tqueue.h) | |
230 | * was removed from latest releases of 2.1.x kernel. | |
231 | * Use of macro __init to mark the initialization | |
232 | * routines, so memory can be reused. | |
233 | * Also incorporate implementation of critical region | |
234 | * in function cleanup_module() created by anonymous | |
235 | * linuxer. | |
236 | * | |
237 | * Revision 1.36.4.28 1997/04/25 16:00:00 daniel | |
238 | * Change to support new firmware that solves DCD problem: | |
239 | * application could fail to receive SIGHUP signal when DCD | |
240 | * varying too fast. | |
241 | * | |
242 | * Revision 1.36.4.27 1997/03/26 10:30:00 daniel | |
243 | * Changed for support linux versions 2.1.X. | |
244 | * Backward compatible with linux versions 2.0.X. | |
245 | * Corrected illegal use of filler field in | |
246 | * CH_CTRL struct. | |
247 | * Deleted some debug messages. | |
248 | * | |
249 | * Revision 1.36.4.26 1997/02/27 12:00:00 daniel | |
250 | * Included check for NULL tty pointer in cyz_poll. | |
251 | * | |
252 | * Revision 1.36.4.25 1997/02/26 16:28:30 bentson | |
253 | * Bill Foster at Blarg! Online services noticed that | |
254 | * some of the switch elements of -Z modem control | |
255 | * lacked a closing "break;" | |
256 | * | |
257 | * Revision 1.36.4.24 1997/02/24 11:00:00 daniel | |
258 | * Changed low water threshold for buffer xmit_buf | |
259 | * | |
260 | * Revision 1.36.4.23 1996/12/02 21:50:16 bentson | |
261 | * Marcio provided fix to modem status fetch for -Z | |
262 | * | |
263 | * Revision 1.36.4.22 1996/10/28 22:41:17 bentson | |
264 | * improve mapping of -Z control page (thanks to Steve | |
265 | * Price <stevep@fa.tdktca.com> for help on this) | |
266 | * | |
267 | * Revision 1.36.4.21 1996/09/10 17:00:10 bentson | |
268 | * shift from CPU-bound to memcopy in cyz_polling operation | |
269 | * | |
270 | * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson | |
271 | * Added support to set and report higher speeds. | |
272 | * | |
273 | * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito | |
274 | * Some fixes in the HW flow control for the BETA release. | |
275 | * Don't try to register the IRQ. | |
276 | * | |
277 | * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson | |
278 | * make sure "cyc" appears in all kernel messages; all soft interrupts | |
279 | * handled by same routine; recognize out-of-band reception; comment | |
280 | * out some diagnostic messages; leave RTS/CTS flow control to hardware; | |
33430dc5 | 281 | * fix race condition in -Z buffer management; only -Y needs to explicitly |
1da177e4 LT |
282 | * flush chars; tidy up some startup messages; |
283 | * | |
284 | * Revision 1.36.4.18 1996/07/25 18:57:31 bentson | |
285 | * shift MOD_INC_USE_COUNT location to match | |
286 | * serial.c; purge some diagnostic messages; | |
287 | * | |
288 | * Revision 1.36.4.17 1996/07/25 18:01:08 bentson | |
289 | * enable modem status messages and fetch & process them; note | |
290 | * time of last activity type for each port; set_line_char now | |
291 | * supports more than line 0 and treats 0 baud correctly; | |
292 | * get_modem_info senses rs_status; | |
293 | * | |
294 | * Revision 1.36.4.16 1996/07/20 08:43:15 bentson | |
295 | * barely works--now's time to turn on | |
296 | * more features 'til it breaks | |
297 | * | |
298 | * Revision 1.36.4.15 1996/07/19 22:30:06 bentson | |
299 | * check more -Z board status; shorten boot message | |
300 | * | |
301 | * Revision 1.36.4.14 1996/07/19 22:20:37 bentson | |
302 | * fix reference to ch_ctrl in startup; verify return | |
303 | * values from cyz_issue_cmd and cyz_update_channel; | |
304 | * more stuff to get modem control correct; | |
305 | * | |
306 | * Revision 1.36.4.13 1996/07/11 19:53:33 bentson | |
307 | * more -Z stuff folded in; re-order changes to put -Z stuff | |
308 | * after -Y stuff (to make changes clearer) | |
309 | * | |
310 | * Revision 1.36.4.12 1996/07/11 15:40:55 bentson | |
311 | * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. | |
312 | * Add code to send break. Clear firmware ID word at startup (so | |
313 | * that other code won't talk to inactive board). | |
314 | * | |
315 | * Revision 1.36.4.11 1996/07/09 05:28:29 bentson | |
316 | * add code for -Z in set_line_char | |
317 | * | |
318 | * Revision 1.36.4.10 1996/07/08 19:28:37 bentson | |
319 | * fold more -Z stuff (or in some cases, error messages) | |
320 | * into driver; add text to "don't know what to do" messages. | |
321 | * | |
322 | * Revision 1.36.4.9 1996/07/08 18:38:38 bentson | |
323 | * moved compile-time flags near top of file; cosmetic changes | |
324 | * to narrow text (to allow 2-up printing); changed many declarations | |
325 | * to "static" to limit external symbols; shuffled code order to | |
326 | * coalesce -Y and -Z specific code, also to put internal functions | |
327 | * in order of tty_driver structure; added code to recognize -Z | |
328 | * ports (and for moment, do nothing or report error); add cy_startup | |
329 | * to parse boot command line for extra base addresses for ISA probes; | |
330 | * | |
331 | * Revision 1.36.4.8 1996/06/25 17:40:19 bentson | |
332 | * reorder some code, fix types of some vars (int vs. long), | |
333 | * add cy_setup to support user declared ISA addresses | |
334 | * | |
335 | * Revision 1.36.4.7 1996/06/21 23:06:18 bentson | |
336 | * dump ioctl based firmware load (it's now a user level | |
337 | * program); ensure uninitialzed ports cannot be used | |
338 | * | |
339 | * Revision 1.36.4.6 1996/06/20 23:17:19 bentson | |
340 | * rename vars and restructure some code | |
341 | * | |
342 | * Revision 1.36.4.5 1996/06/14 15:09:44 bentson | |
343 | * get right status back after boot load | |
344 | * | |
345 | * Revision 1.36.4.4 1996/06/13 19:51:44 bentson | |
346 | * successfully loads firmware | |
347 | * | |
348 | * Revision 1.36.4.3 1996/06/13 06:08:33 bentson | |
349 | * add more of the code for the boot/load ioctls | |
350 | * | |
351 | * Revision 1.36.4.2 1996/06/11 21:00:51 bentson | |
352 | * start to add Z functionality--starting with ioctl | |
353 | * for loading firmware | |
354 | * | |
355 | * Revision 1.36.4.1 1996/06/10 18:03:02 bentson | |
356 | * added code to recognize Z/PCI card at initialization; report | |
357 | * presence, but card is not initialized (because firmware needs | |
358 | * to be loaded) | |
359 | * | |
360 | * Revision 1.36.3.8 1996/06/07 16:29:00 bentson | |
361 | * starting minor number at zero; added missing verify_area | |
362 | * as noted by Heiko Eissfeldt <heiko@colossus.escape.de> | |
363 | * | |
364 | * Revision 1.36.3.7 1996/04/19 21:06:18 bentson | |
365 | * remove unneeded boot message & fix CLOCAL hardware flow | |
366 | * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); | |
367 | * remove unused diagnostic statements; minor 0 is first; | |
368 | * | |
369 | * Revision 1.36.3.6 1996/03/13 13:21:17 marcio | |
370 | * The kernel function vremap (available only in later 1.3.xx kernels) | |
371 | * allows the access to memory addresses above the RAM. This revision | |
372 | * of the driver supports PCI boards below 1Mb (device id 0x100) and | |
373 | * above 1Mb (device id 0x101). | |
374 | * | |
375 | * Revision 1.36.3.5 1996/03/07 15:20:17 bentson | |
376 | * Some global changes to interrupt handling spilled into | |
377 | * this driver--mostly unused arguments in system function | |
378 | * calls. Also added change by Marcio Saito which should | |
379 | * reduce lost interrupts at startup by fast processors. | |
380 | * | |
381 | * Revision 1.36.3.4 1995/11/13 20:45:10 bentson | |
382 | * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed | |
383 | * in 1.3.41 kernel to remove a possible race condition, extend | |
384 | * some error messages, and let the driver run as a loadable module | |
385 | * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a | |
386 | * possible race condition. | |
387 | * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. | |
388 | * | |
389 | * Revision 1.36.3.3 1995/11/13 19:44:48 bentson | |
390 | * Changes by Linus Torvalds in 1.3.33 kernel distribution | |
391 | * required due to reordering of driver initialization. | |
392 | * Drivers are now initialized *after* memory management. | |
393 | * | |
394 | * Revision 1.36.3.2 1995/09/08 22:07:14 bentson | |
395 | * remove printk from ISR; fix typo | |
396 | * | |
397 | * Revision 1.36.3.1 1995/09/01 12:00:42 marcio | |
398 | * Minor fixes in the PCI board support. PCI function calls in | |
399 | * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan | |
400 | * <duncan@okay.com>. "bad serial count" message removed. | |
401 | * | |
402 | * Revision 1.36.3 1995/08/22 09:19:42 marcio | |
403 | * Cyclom-Y/PCI support added. Changes in the cy_init routine and | |
404 | * board initialization. Changes in the boot messages. The driver | |
405 | * supports up to 4 boards and 64 ports by default. | |
406 | * | |
407 | * Revision 1.36.1.4 1995/03/29 06:14:14 bentson | |
408 | * disambiguate between Cyclom-16Y and Cyclom-32Ye; | |
409 | * | |
410 | * Revision 1.36.1.3 1995/03/23 22:15:35 bentson | |
411 | * add missing break in modem control block in ioctl switch statement | |
412 | * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); | |
413 | * | |
414 | * Revision 1.36.1.2 1995/03/22 19:16:22 bentson | |
415 | * make sure CTS flow control is set as soon as possible (thanks | |
416 | * to note from David Lambert <lambert@chesapeake.rps.slb.com>); | |
417 | * | |
418 | * Revision 1.36.1.1 1995/03/13 15:44:43 bentson | |
419 | * initialize defaults for receive threshold and stale data timeout; | |
420 | * cosmetic changes; | |
421 | * | |
422 | * Revision 1.36 1995/03/10 23:33:53 bentson | |
423 | * added support of chips 4-7 in 32 port Cyclom-Ye; | |
424 | * fix cy_interrupt pointer dereference problem | |
425 | * (Joe Portman <baron@aa.net>); | |
426 | * give better error response if open is attempted on non-existent port | |
427 | * (Zachariah Vaum <jchryslr@netcom.com>); | |
428 | * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); | |
429 | * conditional compilation for -16Y on systems with fast, noisy bus; | |
430 | * comment out diagnostic print function; | |
431 | * cleaned up table of base addresses; | |
432 | * set receiver time-out period register to correct value, | |
433 | * set receive threshold to better default values, | |
434 | * set chip timer to more accurate 200 Hz ticking, | |
435 | * add code to monitor and modify receive parameters | |
436 | * (Rik Faith <faith@cs.unc.edu> Nick Simicich | |
437 | * <njs@scifi.emi.net>); | |
438 | * | |
439 | * Revision 1.35 1994/12/16 13:54:18 steffen | |
440 | * additional patch by Marcio Saito for board detection | |
441 | * Accidently left out in 1.34 | |
442 | * | |
443 | * Revision 1.34 1994/12/10 12:37:12 steffen | |
444 | * This is the corrected version as suggested by Marcio Saito | |
445 | * | |
446 | * Revision 1.33 1994/12/01 22:41:18 bentson | |
447 | * add hooks to support more high speeds directly; add tytso | |
448 | * patch regarding CLOCAL wakeups | |
449 | * | |
450 | * Revision 1.32 1994/11/23 19:50:04 bentson | |
451 | * allow direct kernel control of higher signalling rates; | |
452 | * look for cards at additional locations | |
453 | * | |
454 | * Revision 1.31 1994/11/16 04:33:28 bentson | |
455 | * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- | |
456 | * a problem in chars_in_buffer has been resolved by some | |
457 | * small changes; this should yield smoother output | |
458 | * | |
459 | * Revision 1.30 1994/11/16 04:28:05 bentson | |
460 | * Fix from Corey Minyard, Internet: minyard@metronet.com, | |
461 | * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to | |
462 | * cy_hangup that appears to clear up much (all?) of the | |
463 | * DTR glitches; also he's added/cleaned-up diagnostic messages | |
464 | * | |
465 | * Revision 1.29 1994/11/16 04:16:07 bentson | |
466 | * add change proposed by Ralph Sims, ralphs@halcyon.com, to | |
467 | * operate higher speeds in same way as other serial ports; | |
468 | * add more serial ports (for up to two 16-port muxes). | |
469 | * | |
470 | * Revision 1.28 1994/11/04 00:13:16 root | |
471 | * turn off diagnostic messages | |
472 | * | |
473 | * Revision 1.27 1994/11/03 23:46:37 root | |
474 | * bunch of changes to bring driver into greater conformance | |
475 | * with the serial.c driver (looking for missed fixes) | |
476 | * | |
477 | * Revision 1.26 1994/11/03 22:40:36 root | |
478 | * automatic interrupt probing fixed. | |
479 | * | |
480 | * Revision 1.25 1994/11/03 20:17:02 root | |
481 | * start to implement auto-irq | |
482 | * | |
483 | * Revision 1.24 1994/11/03 18:01:55 root | |
484 | * still working on modem signals--trying not to drop DTR | |
485 | * during the getty/login processes | |
486 | * | |
487 | * Revision 1.23 1994/11/03 17:51:36 root | |
488 | * extend baud rate support; set receive threshold as function | |
489 | * of baud rate; fix some problems with RTS/CTS; | |
490 | * | |
491 | * Revision 1.22 1994/11/02 18:05:35 root | |
492 | * changed arguments to udelay to type long to get | |
493 | * delays to be of correct duration | |
494 | * | |
495 | * Revision 1.21 1994/11/02 17:37:30 root | |
496 | * employ udelay (after calibrating loops_per_second earlier | |
497 | * in init/main.c) instead of using home-grown delay routines | |
498 | * | |
499 | * Revision 1.20 1994/11/02 03:11:38 root | |
500 | * cy_chars_in_buffer forces a return value of 0 to let | |
501 | * login work (don't know why it does); some functions | |
502 | * that were returning EFAULT, now executes the code; | |
503 | * more work on deciding when to disable xmit interrupts; | |
504 | * | |
505 | * Revision 1.19 1994/11/01 20:10:14 root | |
506 | * define routine to start transmission interrupts (by enabling | |
507 | * transmit interrupts); directly enable/disable modem interrupts; | |
508 | * | |
509 | * Revision 1.18 1994/11/01 18:40:45 bentson | |
510 | * Don't always enable transmit interrupts in startup; interrupt on | |
511 | * TxMpty instead of TxRdy to help characters get out before shutdown; | |
512 | * restructure xmit interrupt to check for chars first and quit if | |
513 | * none are ready to go; modem status (MXVRx) is upright, _not_ inverted | |
514 | * (to my view); | |
515 | * | |
516 | * Revision 1.17 1994/10/30 04:39:45 bentson | |
517 | * rename serial_driver and callout_driver to cy_serial_driver and | |
518 | * cy_callout_driver to avoid linkage interference; initialize | |
519 | * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port | |
520 | * from cyclades_port structure; add paranoia check to cy_close; | |
521 | * | |
522 | * Revision 1.16 1994/10/30 01:14:33 bentson | |
523 | * change major numbers; add some _early_ return statements; | |
524 | * | |
525 | * Revision 1.15 1994/10/29 06:43:15 bentson | |
526 | * final tidying up for clean compile; enable some error reporting | |
527 | * | |
528 | * Revision 1.14 1994/10/28 20:30:22 Bentson | |
529 | * lots of changes to drag the driver towards the new tty_io | |
530 | * structures and operation. not expected to work, but may | |
531 | * compile cleanly. | |
532 | * | |
533 | * Revision 1.13 1994/07/21 23:08:57 Bentson | |
534 | * add some diagnostic cruft; support 24 lines (for testing | |
535 | * both -8Y and -16Y cards; be more thorough in servicing all | |
536 | * chips during interrupt; add "volatile" a few places to | |
537 | * circumvent compiler optimizations; fix base & offset | |
538 | * computations in block_til_ready (was causing chip 0 to | |
539 | * stop operation) | |
540 | * | |
541 | * Revision 1.12 1994/07/19 16:42:11 Bentson | |
542 | * add some hackery for kernel version 1.1.8; expand | |
543 | * error messages; refine timing for delay loops and | |
544 | * declare loop params volatile | |
545 | * | |
546 | * Revision 1.11 1994/06/11 21:53:10 bentson | |
547 | * get use of save_car right in transmit interrupt service | |
548 | * | |
549 | * Revision 1.10.1.1 1994/06/11 21:31:18 bentson | |
550 | * add some diagnostic printing; try to fix save_car stuff | |
551 | * | |
552 | * Revision 1.10 1994/06/11 20:36:08 bentson | |
553 | * clean up compiler warnings | |
554 | * | |
555 | * Revision 1.9 1994/06/11 19:42:46 bentson | |
556 | * added a bunch of code to support modem signalling | |
557 | * | |
558 | * Revision 1.8 1994/06/11 17:57:07 bentson | |
559 | * recognize break & parity error | |
560 | * | |
561 | * Revision 1.7 1994/06/05 05:51:34 bentson | |
562 | * Reorder baud table to be monotonic; add cli to CP; discard | |
563 | * incoming characters and status if the line isn't open; start to | |
564 | * fold code into cy_throttle; start to port get_serial_info, | |
565 | * set_serial_info, get_modem_info, set_modem_info, and send_break | |
566 | * from serial.c; expand cy_ioctl; relocate and expand config_setup; | |
567 | * get flow control characters from tty struct; invalidate ports w/o | |
568 | * hardware; | |
569 | * | |
570 | * Revision 1.6 1994/05/31 18:42:21 bentson | |
571 | * add a loop-breaker in the interrupt service routine; | |
572 | * note when port is initialized so that it can be shut | |
573 | * down under the right conditions; receive works without | |
574 | * any obvious errors | |
575 | * | |
576 | * Revision 1.5 1994/05/30 00:55:02 bentson | |
577 | * transmit works without obvious errors | |
578 | * | |
579 | * Revision 1.4 1994/05/27 18:46:27 bentson | |
580 | * incorporated more code from lib_y.c; can now print short | |
581 | * strings under interrupt control to port zero; seems to | |
582 | * select ports/channels/lines correctly | |
583 | * | |
584 | * Revision 1.3 1994/05/25 22:12:44 bentson | |
585 | * shifting from multi-port on a card to proper multiplexor | |
586 | * data structures; added skeletons of most routines | |
587 | * | |
588 | * Revision 1.2 1994/05/19 13:21:43 bentson | |
589 | * start to crib from other sources | |
590 | * | |
591 | */ | |
592 | ||
c8e1693a | 593 | #define CY_VERSION "2.5" |
096dcfce | 594 | |
1da177e4 LT |
595 | /* If you need to install more boards than NR_CARDS, change the constant |
596 | in the definition below. No other change is necessary to support up to | |
597 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
598 | ||
02f1175c | 599 | #define NR_CARDS 4 |
1da177e4 LT |
600 | |
601 | /* | |
602 | If the total number of ports is larger than NR_PORTS, change this | |
603 | constant in the definition below. No other change is necessary to | |
604 | support more boards/ports. */ | |
605 | ||
02f1175c | 606 | #define NR_PORTS 256 |
1da177e4 LT |
607 | |
608 | #define ZE_V1_NPORTS 64 | |
609 | #define ZO_V1 0 | |
610 | #define ZO_V2 1 | |
611 | #define ZE_V1 2 | |
612 | ||
613 | #define SERIAL_PARANOIA_CHECK | |
614 | #undef CY_DEBUG_OPEN | |
615 | #undef CY_DEBUG_THROTTLE | |
616 | #undef CY_DEBUG_OTHER | |
617 | #undef CY_DEBUG_IO | |
618 | #undef CY_DEBUG_COUNT | |
619 | #undef CY_DEBUG_DTR | |
620 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
621 | #undef CY_DEBUG_INTERRUPTS | |
622 | #undef CY_16Y_HACK | |
623 | #undef CY_ENABLE_MONITORING | |
624 | #undef CY_PCI_DEBUG | |
625 | ||
1da177e4 LT |
626 | /* |
627 | * Include section | |
628 | */ | |
1da177e4 LT |
629 | #include <linux/module.h> |
630 | #include <linux/errno.h> | |
631 | #include <linux/signal.h> | |
632 | #include <linux/sched.h> | |
633 | #include <linux/timer.h> | |
634 | #include <linux/interrupt.h> | |
635 | #include <linux/tty.h> | |
33f0f88f | 636 | #include <linux/tty_flip.h> |
1da177e4 LT |
637 | #include <linux/serial.h> |
638 | #include <linux/major.h> | |
639 | #include <linux/string.h> | |
640 | #include <linux/fcntl.h> | |
641 | #include <linux/ptrace.h> | |
642 | #include <linux/cyclades.h> | |
643 | #include <linux/mm.h> | |
644 | #include <linux/ioport.h> | |
645 | #include <linux/init.h> | |
646 | #include <linux/delay.h> | |
647 | #include <linux/spinlock.h> | |
648 | #include <linux/bitops.h> | |
054f5b0a | 649 | #include <linux/firmware.h> |
1da177e4 LT |
650 | |
651 | #include <asm/system.h> | |
652 | #include <asm/io.h> | |
653 | #include <asm/irq.h> | |
654 | #include <asm/uaccess.h> | |
655 | ||
1da177e4 LT |
656 | #include <linux/kernel.h> |
657 | #include <linux/pci.h> | |
658 | ||
659 | #include <linux/stat.h> | |
660 | #include <linux/proc_fs.h> | |
661 | ||
02f1175c JS |
662 | static void cy_throttle(struct tty_struct *tty); |
663 | static void cy_send_xchar(struct tty_struct *tty, char ch); | |
1da177e4 LT |
664 | |
665 | #define IS_CYC_Z(card) ((card).num_chips == -1) | |
666 | ||
667 | #define Z_FPGA_CHECK(card) \ | |
db05c3b1 | 668 | ((readl(&((struct RUNTIME_9060 __iomem *) \ |
02f1175c | 669 | ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) |
1da177e4 | 670 | |
db05c3b1 | 671 | #define ISZLOADED(card) (((ZO_V1==readl(&((struct RUNTIME_9060 __iomem *) \ |
1da177e4 LT |
672 | ((card).ctl_addr))->mail_box_0)) || \ |
673 | Z_FPGA_CHECK(card)) && \ | |
db05c3b1 | 674 | (ZFIRM_ID==readl(&((struct FIRM_ID __iomem *) \ |
1da177e4 LT |
675 | ((card).base_addr+ID_ADDRESS))->signature))) |
676 | ||
677 | #ifndef SERIAL_XMIT_SIZE | |
678 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
679 | #endif | |
680 | #define WAKEUP_CHARS 256 | |
681 | ||
682 | #define STD_COM_FLAGS (0) | |
683 | ||
054f5b0a JS |
684 | /* firmware stuff */ |
685 | #define ZL_MAX_BLOCKS 16 | |
686 | #define DRIVER_VERSION 0x02010203 | |
687 | #define RAM_SIZE 0x80000 | |
688 | ||
689 | #define Z_FPGA_LOADED(X) ((readl(&(X)->init_ctrl) & (1<<17)) != 0) | |
690 | ||
691 | enum zblock_type { | |
692 | ZBLOCK_PRG = 0, | |
693 | ZBLOCK_FPGA = 1 | |
694 | }; | |
695 | ||
696 | struct zfile_header { | |
697 | char name[64]; | |
698 | char date[32]; | |
699 | char aux[32]; | |
700 | u32 n_config; | |
701 | u32 config_offset; | |
702 | u32 n_blocks; | |
703 | u32 block_offset; | |
704 | u32 reserved[9]; | |
705 | } __attribute__ ((packed)); | |
706 | ||
707 | struct zfile_config { | |
708 | char name[64]; | |
709 | u32 mailbox; | |
710 | u32 function; | |
711 | u32 n_blocks; | |
712 | u32 block_list[ZL_MAX_BLOCKS]; | |
713 | } __attribute__ ((packed)); | |
714 | ||
715 | struct zfile_block { | |
716 | u32 type; | |
717 | u32 file_offset; | |
718 | u32 ram_offset; | |
719 | u32 size; | |
720 | } __attribute__ ((packed)); | |
721 | ||
1da177e4 LT |
722 | static struct tty_driver *cy_serial_driver; |
723 | ||
724 | #ifdef CONFIG_ISA | |
725 | /* This is the address lookup table. The driver will probe for | |
726 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
727 | driver to probe addresses at a different address, add it to | |
728 | this table. If the driver is probing some other board and | |
729 | causing problems, remove the offending address from this table. | |
730 | The cy_setup function extracts additional addresses from the | |
731 | boot options line. The form is "cyclades=address,address..." | |
732 | */ | |
733 | ||
734 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
735 | 0xD0000, |
736 | 0xD2000, | |
737 | 0xD4000, | |
738 | 0xD6000, | |
739 | 0xD8000, | |
740 | 0xDA000, | |
741 | 0xDC000, | |
742 | 0xDE000, | |
743 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 744 | }; |
02f1175c | 745 | |
fe971071 | 746 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 LT |
747 | |
748 | #ifdef MODULE | |
3046d50e JS |
749 | static long maddr[NR_CARDS]; |
750 | static int irq[NR_CARDS]; | |
1da177e4 LT |
751 | |
752 | module_param_array(maddr, long, NULL, 0); | |
753 | module_param_array(irq, int, NULL, 0); | |
754 | #endif | |
755 | ||
02f1175c | 756 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
757 | |
758 | /* This is the per-card data structure containing address, irq, number of | |
759 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
760 | */ | |
761 | static struct cyclades_card cy_card[NR_CARDS]; | |
762 | ||
02f1175c | 763 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 764 | |
1da177e4 LT |
765 | /* |
766 | * This is used to look up the divisor speeds and the timeouts | |
767 | * We're normally limited to 15 distinct baud rates. The extra | |
768 | * are accessed via settings in info->flags. | |
769 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, | |
770 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
771 | * HI VHI | |
772 | * 20 | |
773 | */ | |
774 | static int baud_table[] = { | |
02f1175c JS |
775 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
776 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
777 | 230400, 0 | |
778 | }; | |
779 | ||
780 | static char baud_co_25[] = { /* 25 MHz clock option table */ | |
781 | /* value => 00 01 02 03 04 */ | |
782 | /* divide by 8 32 128 512 2048 */ | |
783 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
784 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
785 | }; | |
786 | ||
787 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ | |
788 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, | |
789 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
790 | }; | |
791 | ||
792 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ | |
793 | /* value => 00 01 02 03 04 */ | |
794 | /* divide by 8 32 128 512 2048 */ | |
795 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
796 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
797 | 0x00 | |
798 | }; | |
799 | ||
800 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ | |
801 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, | |
802 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
803 | 0x21 | |
804 | }; | |
805 | ||
806 | static char baud_cor3[] = { /* receive threshold */ | |
807 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
808 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
809 | 0x07 | |
810 | }; | |
1da177e4 LT |
811 | |
812 | /* | |
813 | * The Cyclades driver implements HW flow control as any serial driver. | |
814 | * The cyclades_port structure member rflow and the vector rflow_thr | |
815 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
816 | * data loss even when the system interrupt latency is too high. These flags | |
817 | * are to be used only with very special applications. Setting these flags | |
818 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
819 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
820 | * cables. | |
821 | */ | |
822 | ||
02f1175c JS |
823 | static char rflow_thr[] = { /* rflow threshold */ |
824 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
825 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
826 | 0x0a | |
827 | }; | |
1da177e4 LT |
828 | |
829 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
830 | * address order. This look-up table overcomes that problem. | |
831 | */ | |
02f1175c JS |
832 | static int cy_chip_offset[] = { 0x0000, |
833 | 0x0400, | |
834 | 0x0800, | |
835 | 0x0C00, | |
836 | 0x0200, | |
837 | 0x0600, | |
838 | 0x0A00, | |
839 | 0x0E00 | |
840 | }; | |
1da177e4 LT |
841 | |
842 | /* PCI related definitions */ | |
843 | ||
1da177e4 | 844 | #ifdef CONFIG_PCI |
893de2df JS |
845 | static struct pci_device_id cy_pci_dev_id[] __devinitdata = { |
846 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, /* PCI < 1Mb */ | |
847 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, /* PCI > 1Mb */ | |
848 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, /* 4Y PCI < 1Mb */ | |
849 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, /* 4Y PCI > 1Mb */ | |
850 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, /* 8Y PCI < 1Mb */ | |
851 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, /* 8Y PCI > 1Mb */ | |
852 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, /* Z PCI < 1Mb */ | |
853 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, /* Z PCI > 1Mb */ | |
854 | { } /* end of table */ | |
02f1175c | 855 | }; |
893de2df | 856 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
857 | #endif |
858 | ||
859 | static void cy_start(struct tty_struct *); | |
860 | static void set_line_char(struct cyclades_port *); | |
1a86b5e3 | 861 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
862 | #ifdef CONFIG_ISA |
863 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 864 | #endif /* CONFIG_ISA */ |
1da177e4 | 865 | |
02f1175c | 866 | static int cyclades_get_proc_info(char *, char **, off_t, int, int *, void *); |
1da177e4 LT |
867 | |
868 | #ifndef CONFIG_CYZ_INTR | |
869 | static void cyz_poll(unsigned long); | |
870 | ||
871 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
872 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
873 | ||
8d06afab | 874 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 875 | |
02f1175c | 876 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
877 | static void cyz_rx_restart(unsigned long); |
878 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 879 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 880 | |
02f1175c JS |
881 | static inline int serial_paranoia_check(struct cyclades_port *info, |
882 | char *name, const char *routine) | |
1da177e4 LT |
883 | { |
884 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 885 | if (!info) { |
21719191 JS |
886 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
887 | "in %s\n", name, routine); | |
02f1175c JS |
888 | return 1; |
889 | } | |
890 | ||
02f1175c | 891 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
892 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
893 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
894 | return 1; |
895 | } | |
1da177e4 | 896 | #endif |
02f1175c JS |
897 | return 0; |
898 | } /* serial_paranoia_check */ | |
1da177e4 LT |
899 | |
900 | /* | |
901 | * This routine is used by the interrupt handler to schedule | |
902 | * processing in the software interrupt portion of the driver | |
903 | * (also known as the "bottom half"). This can be called any | |
904 | * number of times for any channel without harm. | |
905 | */ | |
02f1175c | 906 | static inline void cy_sched_event(struct cyclades_port *info, int event) |
1da177e4 | 907 | { |
02f1175c JS |
908 | info->event |= 1 << event; /* remember what kind of event and who */ |
909 | schedule_work(&info->tqueue); | |
910 | } /* cy_sched_event */ | |
1da177e4 LT |
911 | |
912 | /* | |
913 | * This routine is used to handle the "bottom half" processing for the | |
914 | * serial driver, known also the "software interrupt" processing. | |
915 | * This processing is done at the kernel interrupt level, after the | |
916 | * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This | |
917 | * is where time-consuming activities which can not be done in the | |
918 | * interrupt driver proper are done; the interrupt driver schedules | |
919 | * them using cy_sched_event(), and they get done here. | |
920 | * | |
921 | * This is done through one level of indirection--the task queue. | |
922 | * When a hardware interrupt service routine wants service by the | |
923 | * driver's bottom half, it enqueues the appropriate tq_struct (one | |
924 | * per port) to the keventd work queue and sets a request flag | |
925 | * that the work queue be processed. | |
926 | * | |
927 | * Although this may seem unwieldy, it gives the system a way to | |
928 | * pass an argument (in this case the pointer to the cyclades_port | |
929 | * structure) to the bottom half of the driver. Previous kernels | |
930 | * had to poll every port to see if that port needed servicing. | |
931 | */ | |
932 | static void | |
c4028958 | 933 | do_softint(struct work_struct *work) |
1da177e4 | 934 | { |
c4028958 DH |
935 | struct cyclades_port *info = |
936 | container_of(work, struct cyclades_port, tqueue); | |
02f1175c JS |
937 | struct tty_struct *tty; |
938 | ||
939 | tty = info->tty; | |
940 | if (!tty) | |
941 | return; | |
942 | ||
943 | if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) { | |
944 | tty_hangup(info->tty); | |
945 | wake_up_interruptible(&info->open_wait); | |
946 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
947 | } | |
948 | if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) | |
949 | wake_up_interruptible(&info->open_wait); | |
1da177e4 | 950 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
951 | if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event) && |
952 | !timer_pending(&cyz_rx_full_timer[info->line])) | |
953 | mod_timer(&cyz_rx_full_timer[info->line], jiffies + 1); | |
1da177e4 | 954 | #endif |
02f1175c JS |
955 | if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) |
956 | wake_up_interruptible(&info->delta_msr_wait); | |
957 | tty_wakeup(tty); | |
1da177e4 | 958 | #ifdef Z_WAKE |
02f1175c | 959 | if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) |
2c7fea99 | 960 | complete(&info->shutdown_wait); |
1da177e4 LT |
961 | #endif |
962 | } /* do_softint */ | |
963 | ||
964 | ||
965 | /***********************************************************/ | |
966 | /********* Start of block of Cyclom-Y specific code ********/ | |
967 | ||
968 | /* This routine waits up to 1000 micro-seconds for the previous | |
969 | command to the Cirrus chip to complete and then issues the | |
970 | new command. An error is returned if the previous command | |
971 | didn't finish within the time limit. | |
972 | ||
973 | This function is only called from inside spinlock-protected code. | |
974 | */ | |
02f1175c | 975 | static int cyy_issue_cmd(void __iomem * base_addr, u_char cmd, int index) |
1da177e4 | 976 | { |
ad39c300 | 977 | unsigned int i; |
1da177e4 | 978 | |
02f1175c JS |
979 | /* Check to see that the previous command has completed */ |
980 | for (i = 0; i < 100; i++) { | |
db05c3b1 | 981 | if (readb(base_addr + (CyCCR << index)) == 0) { |
02f1175c JS |
982 | break; |
983 | } | |
984 | udelay(10L); | |
1da177e4 | 985 | } |
02f1175c JS |
986 | /* if the CCR never cleared, the previous command |
987 | didn't finish within the "reasonable time" */ | |
988 | if (i == 100) | |
096dcfce | 989 | return -1; |
1da177e4 | 990 | |
02f1175c JS |
991 | /* Issue the new command */ |
992 | cy_writeb(base_addr + (CyCCR << index), cmd); | |
1da177e4 | 993 | |
096dcfce | 994 | return 0; |
02f1175c | 995 | } /* cyy_issue_cmd */ |
1da177e4 LT |
996 | |
997 | #ifdef CONFIG_ISA | |
998 | /* ISA interrupt detection code */ | |
02f1175c | 999 | static unsigned detect_isa_irq(void __iomem * address) |
1da177e4 | 1000 | { |
02f1175c JS |
1001 | int irq; |
1002 | unsigned long irqs, flags; | |
1003 | int save_xir, save_car; | |
1004 | int index = 0; /* IRQ probing is only for ISA */ | |
1005 | ||
1006 | /* forget possible initially masked and pending IRQ */ | |
1007 | irq = probe_irq_off(probe_irq_on()); | |
1008 | ||
1009 | /* Clear interrupts on the board first */ | |
1010 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
1011 | /* Cy_ClrIntr is 0x1800 */ | |
1012 | ||
1013 | irqs = probe_irq_on(); | |
1014 | /* Wait ... */ | |
1015 | udelay(5000L); | |
1016 | ||
1017 | /* Enable the Tx interrupts on the CD1400 */ | |
1018 | local_irq_save(flags); | |
1019 | cy_writeb(address + (CyCAR << index), 0); | |
1020 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); | |
1021 | ||
1022 | cy_writeb(address + (CyCAR << index), 0); | |
1023 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 1024 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
1025 | local_irq_restore(flags); |
1026 | ||
1027 | /* Wait ... */ | |
1028 | udelay(5000L); | |
1029 | ||
1030 | /* Check which interrupt is in use */ | |
1031 | irq = probe_irq_off(irqs); | |
1032 | ||
1033 | /* Clean up */ | |
db05c3b1 JS |
1034 | save_xir = (u_char) readb(address + (CyTIR << index)); |
1035 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
1036 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
1037 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 1038 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
1039 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
1040 | cy_writeb(address + (CyCAR << index), (save_car)); | |
1041 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
1042 | /* Cy_ClrIntr is 0x1800 */ | |
1043 | ||
1044 | return (irq > 0) ? irq : 0; | |
1da177e4 | 1045 | } |
02f1175c | 1046 | #endif /* CONFIG_ISA */ |
1da177e4 | 1047 | |
e941027f | 1048 | static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, |
02f1175c | 1049 | void __iomem * base_addr, int status, int index) |
e941027f JS |
1050 | { |
1051 | struct cyclades_port *info; | |
1052 | struct tty_struct *tty; | |
ad39c300 | 1053 | int char_count; |
dd025c0c | 1054 | int j, len, mdm_change, mdm_status, outch; |
e941027f JS |
1055 | int save_xir, channel, save_car; |
1056 | char data; | |
1057 | ||
02f1175c | 1058 | if (status & CySRReceive) { /* reception interrupt */ |
e941027f | 1059 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1060 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 1061 | #endif |
02f1175c JS |
1062 | /* determine the channel & change to that context */ |
1063 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1064 | save_xir = (u_char) readb(base_addr + (CyRIR << index)); |
02f1175c | 1065 | channel = (u_short) (save_xir & CyIRChannel); |
dd025c0c | 1066 | info = &cinfo->ports[channel + chip * 4]; |
db05c3b1 | 1067 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1068 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1069 | ||
1070 | /* if there is nowhere to put the data, discard it */ | |
f7429034 | 1071 | if (info->tty == NULL) { |
db05c3b1 | 1072 | j = (readb(base_addr + (CyRIVR << index)) & |
02f1175c JS |
1073 | CyIVRMask); |
1074 | if (j == CyIVRRxEx) { /* exception */ | |
db05c3b1 | 1075 | data = readb(base_addr + (CyRDSR << index)); |
02f1175c | 1076 | } else { /* normal character reception */ |
db05c3b1 | 1077 | char_count = readb(base_addr + |
02f1175c JS |
1078 | (CyRDCR << index)); |
1079 | while (char_count--) { | |
db05c3b1 | 1080 | data = readb(base_addr + |
02f1175c | 1081 | (CyRDSR << index)); |
e941027f | 1082 | } |
e941027f | 1083 | } |
02f1175c JS |
1084 | } else { /* there is an open port for this data */ |
1085 | tty = info->tty; | |
db05c3b1 | 1086 | j = (readb(base_addr + (CyRIVR << index)) & |
02f1175c JS |
1087 | CyIVRMask); |
1088 | if (j == CyIVRRxEx) { /* exception */ | |
db05c3b1 | 1089 | data = readb(base_addr + (CyRDSR << index)); |
02f1175c JS |
1090 | |
1091 | /* For statistics only */ | |
1092 | if (data & CyBREAK) | |
1093 | info->icount.brk++; | |
1094 | else if (data & CyFRAME) | |
1095 | info->icount.frame++; | |
1096 | else if (data & CyPARITY) | |
1097 | info->icount.parity++; | |
1098 | else if (data & CyOVERRUN) | |
1099 | info->icount.overrun++; | |
1100 | ||
1101 | if (data & info->ignore_status_mask) { | |
1102 | info->icount.rx++; | |
3fcbc729 | 1103 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
1104 | return; |
1105 | } | |
1106 | if (tty_buffer_request_room(tty, 1)) { | |
1107 | if (data & info->read_status_mask) { | |
1108 | if (data & CyBREAK) { | |
1109 | tty_insert_flip_char( | |
1110 | tty, | |
db05c3b1 | 1111 | readb( |
02f1175c JS |
1112 | base_addr + |
1113 | (CyRDSR << | |
1114 | index)), | |
1115 | TTY_BREAK); | |
1116 | info->icount.rx++; | |
1117 | if (info->flags & | |
1118 | ASYNC_SAK) { | |
1119 | do_SAK(tty); | |
1120 | } | |
1121 | } else if (data & CyFRAME) { | |
1122 | tty_insert_flip_char( | |
1123 | tty, | |
db05c3b1 | 1124 | readb( |
02f1175c JS |
1125 | base_addr + |
1126 | (CyRDSR << | |
1127 | index)), | |
1128 | TTY_FRAME); | |
1129 | info->icount.rx++; | |
1130 | info->idle_stats. | |
1131 | frame_errs++; | |
1132 | } else if (data & CyPARITY) { | |
1133 | /* Pieces of seven... */ | |
1134 | tty_insert_flip_char( | |
1135 | tty, | |
db05c3b1 | 1136 | readb( |
02f1175c JS |
1137 | base_addr + |
1138 | (CyRDSR << | |
1139 | index)), | |
1140 | TTY_PARITY); | |
1141 | info->icount.rx++; | |
1142 | info->idle_stats. | |
1143 | parity_errs++; | |
1144 | } else if (data & CyOVERRUN) { | |
1145 | tty_insert_flip_char( | |
1146 | tty, 0, | |
1147 | TTY_OVERRUN); | |
1148 | info->icount.rx++; | |
1149 | /* If the flip buffer itself is | |
1150 | overflowing, we still lose | |
1151 | the next incoming character. | |
1152 | */ | |
1153 | tty_insert_flip_char( | |
1154 | tty, | |
db05c3b1 | 1155 | readb( |
02f1175c JS |
1156 | base_addr + |
1157 | (CyRDSR << | |
1158 | index)), | |
1159 | TTY_FRAME); | |
1160 | info->icount.rx++; | |
1161 | info->idle_stats. | |
1162 | overruns++; | |
1163 | /* These two conditions may imply */ | |
1164 | /* a normal read should be done. */ | |
1165 | /* }else if(data & CyTIMEOUT){ */ | |
1166 | /* }else if(data & CySPECHAR){ */ | |
1167 | } else { | |
1168 | tty_insert_flip_char( | |
1169 | tty, 0, | |
1170 | TTY_NORMAL); | |
1171 | info->icount.rx++; | |
1172 | } | |
1173 | } else { | |
1174 | tty_insert_flip_char(tty, 0, | |
1175 | TTY_NORMAL); | |
1176 | info->icount.rx++; | |
1177 | } | |
1178 | } else { | |
1179 | /* there was a software buffer | |
1180 | overrun and nothing could be | |
1181 | done about it!!! */ | |
1182 | info->icount.buf_overrun++; | |
1183 | info->idle_stats.overruns++; | |
1184 | } | |
1185 | } else { /* normal character reception */ | |
1186 | /* load # chars available from the chip */ | |
db05c3b1 | 1187 | char_count = readb(base_addr + |
02f1175c | 1188 | (CyRDCR << index)); |
e941027f JS |
1189 | |
1190 | #ifdef CY_ENABLE_MONITORING | |
02f1175c JS |
1191 | ++info->mon.int_count; |
1192 | info->mon.char_count += char_count; | |
1193 | if (char_count > info->mon.char_max) | |
1194 | info->mon.char_max = char_count; | |
1195 | info->mon.char_last = char_count; | |
e941027f | 1196 | #endif |
02f1175c JS |
1197 | len = tty_buffer_request_room(tty, char_count); |
1198 | while (len--) { | |
db05c3b1 | 1199 | data = readb(base_addr + |
02f1175c JS |
1200 | (CyRDSR << index)); |
1201 | tty_insert_flip_char(tty, data, | |
1202 | TTY_NORMAL); | |
1203 | info->idle_stats.recv_bytes++; | |
1204 | info->icount.rx++; | |
e941027f | 1205 | #ifdef CY_16Y_HACK |
02f1175c | 1206 | udelay(10L); |
e941027f | 1207 | #endif |
02f1175c JS |
1208 | } |
1209 | info->idle_stats.recv_idle = jiffies; | |
1210 | } | |
1211 | tty_schedule_flip(tty); | |
e941027f | 1212 | } |
02f1175c JS |
1213 | /* end of service */ |
1214 | cy_writeb(base_addr + (CyRIR << index), (save_xir & 0x3f)); | |
1215 | cy_writeb(base_addr + (CyCAR << index), (save_car)); | |
1216 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1217 | } |
1218 | ||
02f1175c JS |
1219 | if (status & CySRTransmit) { /* transmission interrupt */ |
1220 | /* Since we only get here when the transmit buffer | |
1221 | is empty, we know we can always stuff a dozen | |
1222 | characters. */ | |
e941027f | 1223 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1224 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
1225 | #endif |
1226 | ||
02f1175c JS |
1227 | /* determine the channel & change to that context */ |
1228 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1229 | save_xir = (u_char) readb(base_addr + (CyTIR << index)); |
02f1175c | 1230 | channel = (u_short) (save_xir & CyIRChannel); |
db05c3b1 | 1231 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1232 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1233 | ||
1234 | /* validate the port# (as configured and open) */ | |
dd025c0c | 1235 | if (channel + chip * 4 >= cinfo->nports) { |
02f1175c | 1236 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1237 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1238 | ~CyTxRdy); |
1239 | goto txend; | |
e941027f | 1240 | } |
dd025c0c | 1241 | info = &cinfo->ports[channel + chip * 4]; |
f7429034 | 1242 | if (info->tty == NULL) { |
02f1175c | 1243 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1244 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1245 | ~CyTxRdy); |
1246 | goto txdone; | |
e941027f | 1247 | } |
02f1175c JS |
1248 | |
1249 | /* load the on-chip space for outbound data */ | |
1250 | char_count = info->xmit_fifo_size; | |
1251 | ||
1252 | if (info->x_char) { /* send special char */ | |
1253 | outch = info->x_char; | |
1254 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1255 | char_count--; | |
1256 | info->icount.tx++; | |
1257 | info->x_char = 0; | |
e941027f | 1258 | } |
02f1175c JS |
1259 | |
1260 | if (info->breakon || info->breakoff) { | |
1261 | if (info->breakon) { | |
1262 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1263 | cy_writeb(base_addr + (CyTDR << index), 0x81); | |
1264 | info->breakon = 0; | |
1265 | char_count -= 2; | |
1266 | } | |
1267 | if (info->breakoff) { | |
1268 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1269 | cy_writeb(base_addr + (CyTDR << index), 0x83); | |
1270 | info->breakoff = 0; | |
1271 | char_count -= 2; | |
1272 | } | |
e941027f | 1273 | } |
02f1175c JS |
1274 | |
1275 | while (char_count-- > 0) { | |
1276 | if (!info->xmit_cnt) { | |
db05c3b1 | 1277 | if (readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1278 | CyTxMpty) { |
1279 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1280 | readb(base_addr + |
02f1175c JS |
1281 | (CySRER << index)) & |
1282 | ~CyTxMpty); | |
1283 | } else { | |
1284 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1285 | (readb(base_addr + |
02f1175c JS |
1286 | (CySRER << index)) & |
1287 | ~CyTxRdy) | CyTxMpty); | |
1288 | } | |
1289 | goto txdone; | |
1290 | } | |
f7429034 | 1291 | if (info->xmit_buf == NULL) { |
02f1175c | 1292 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1293 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1294 | ~CyTxRdy); |
1295 | goto txdone; | |
1296 | } | |
1297 | if (info->tty->stopped || info->tty->hw_stopped) { | |
1298 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1299 | readb(base_addr + (CySRER << index)) & |
02f1175c JS |
1300 | ~CyTxRdy); |
1301 | goto txdone; | |
1302 | } | |
1303 | /* Because the Embedded Transmit Commands have | |
1304 | been enabled, we must check to see if the | |
1305 | escape character, NULL, is being sent. If it | |
1306 | is, we must ensure that there is room for it | |
1307 | to be doubled in the output stream. Therefore | |
1308 | we no longer advance the pointer when the | |
1309 | character is fetched, but rather wait until | |
1310 | after the check for a NULL output character. | |
1311 | This is necessary because there may not be | |
1312 | room for the two chars needed to send a NULL.) | |
1313 | */ | |
1314 | outch = info->xmit_buf[info->xmit_tail]; | |
1315 | if (outch) { | |
1316 | info->xmit_cnt--; | |
1317 | info->xmit_tail = (info->xmit_tail + 1) & | |
1318 | (SERIAL_XMIT_SIZE - 1); | |
1319 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1320 | info->icount.tx++; | |
1321 | } else { | |
1322 | if (char_count > 1) { | |
1323 | info->xmit_cnt--; | |
1324 | info->xmit_tail = (info->xmit_tail + 1)& | |
1325 | (SERIAL_XMIT_SIZE - 1); | |
1326 | cy_writeb(base_addr + (CyTDR << index), | |
1327 | outch); | |
1328 | cy_writeb(base_addr + (CyTDR << index), | |
1329 | 0); | |
1330 | info->icount.tx++; | |
1331 | char_count--; | |
02f1175c JS |
1332 | } |
1333 | } | |
e941027f | 1334 | } |
e941027f JS |
1335 | |
1336 | txdone: | |
02f1175c JS |
1337 | if (info->xmit_cnt < WAKEUP_CHARS) { |
1338 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1339 | } | |
e941027f | 1340 | txend: |
02f1175c JS |
1341 | /* end of service */ |
1342 | cy_writeb(base_addr + (CyTIR << index), (save_xir & 0x3f)); | |
1343 | cy_writeb(base_addr + (CyCAR << index), (save_car)); | |
1344 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1345 | } |
1346 | ||
02f1175c | 1347 | if (status & CySRModem) { /* modem interrupt */ |
e941027f | 1348 | |
02f1175c JS |
1349 | /* determine the channel & change to that context */ |
1350 | spin_lock(&cinfo->card_lock); | |
db05c3b1 | 1351 | save_xir = (u_char) readb(base_addr + (CyMIR << index)); |
02f1175c | 1352 | channel = (u_short) (save_xir & CyIRChannel); |
dd025c0c | 1353 | info = &cinfo->ports[channel + chip * 4]; |
db05c3b1 | 1354 | save_car = readb(base_addr + (CyCAR << index)); |
02f1175c JS |
1355 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
1356 | ||
db05c3b1 JS |
1357 | mdm_change = readb(base_addr + (CyMISR << index)); |
1358 | mdm_status = readb(base_addr + (CyMSVR1 << index)); | |
02f1175c | 1359 | |
f7429034 | 1360 | if (info->tty) { |
02f1175c JS |
1361 | if (mdm_change & CyANY_DELTA) { |
1362 | /* For statistics only */ | |
1363 | if (mdm_change & CyDCD) | |
1364 | info->icount.dcd++; | |
1365 | if (mdm_change & CyCTS) | |
1366 | info->icount.cts++; | |
1367 | if (mdm_change & CyDSR) | |
1368 | info->icount.dsr++; | |
1369 | if (mdm_change & CyRI) | |
1370 | info->icount.rng++; | |
1371 | ||
1372 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
e941027f | 1373 | } |
02f1175c JS |
1374 | |
1375 | if ((mdm_change & CyDCD) && | |
1376 | (info->flags & ASYNC_CHECK_CD)) { | |
1377 | if (mdm_status & CyDCD) { | |
1378 | cy_sched_event(info, | |
1379 | Cy_EVENT_OPEN_WAKEUP); | |
1380 | } else { | |
1381 | cy_sched_event(info, Cy_EVENT_HANGUP); | |
1382 | } | |
1383 | } | |
1384 | if ((mdm_change & CyCTS) && | |
1385 | (info->flags & ASYNC_CTS_FLOW)) { | |
1386 | if (info->tty->hw_stopped) { | |
1387 | if (mdm_status & CyCTS) { | |
1388 | /* cy_start isn't used | |
1389 | because... !!! */ | |
1390 | info->tty->hw_stopped = 0; | |
1391 | cy_writeb(base_addr + | |
1392 | (CySRER << index), | |
db05c3b1 | 1393 | readb(base_addr + |
02f1175c JS |
1394 | (CySRER << |
1395 | index))| | |
1396 | CyTxRdy); | |
1397 | cy_sched_event(info, | |
1398 | Cy_EVENT_WRITE_WAKEUP); | |
1399 | } | |
1400 | } else { | |
1401 | if (!(mdm_status & CyCTS)) { | |
1402 | /* cy_stop isn't used | |
1403 | because ... !!! */ | |
1404 | info->tty->hw_stopped = 1; | |
1405 | cy_writeb(base_addr + | |
1406 | (CySRER << index), | |
db05c3b1 | 1407 | readb(base_addr + |
02f1175c JS |
1408 | (CySRER << |
1409 | index)) & | |
1410 | ~CyTxRdy); | |
1411 | } | |
1412 | } | |
1413 | } | |
f7429034 | 1414 | /* if (mdm_change & CyDSR) { |
02f1175c JS |
1415 | } |
1416 | if (mdm_change & CyRI) { | |
f7429034 | 1417 | }*/ |
e941027f | 1418 | } |
02f1175c JS |
1419 | /* end of service */ |
1420 | cy_writeb(base_addr + (CyMIR << index), (save_xir & 0x3f)); | |
1421 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
1422 | spin_unlock(&cinfo->card_lock); | |
e941027f JS |
1423 | } |
1424 | } | |
1425 | ||
1da177e4 LT |
1426 | /* The real interrupt service routine is called |
1427 | whenever the card wants its hand held--chars | |
1428 | received, out buffer empty, modem change, etc. | |
1429 | */ | |
02f1175c | 1430 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 1431 | { |
02f1175c | 1432 | int status; |
f7429034 | 1433 | struct cyclades_card *cinfo = dev_id; |
02f1175c JS |
1434 | void __iomem *base_addr, *card_base_addr; |
1435 | int chip; | |
1436 | int index; | |
1437 | int too_many; | |
1438 | int had_work; | |
1439 | ||
f7429034 | 1440 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 1441 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1442 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",irq); |
1da177e4 | 1443 | #endif |
02f1175c JS |
1444 | return IRQ_NONE; /* spurious interrupt */ |
1445 | } | |
1446 | ||
1447 | card_base_addr = cinfo->base_addr; | |
1448 | index = cinfo->bus_index; | |
1449 | ||
f1e83c6c JS |
1450 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
1451 | if (unlikely(card_base_addr == NULL)) | |
1452 | return IRQ_HANDLED; | |
1453 | ||
02f1175c JS |
1454 | /* This loop checks all chips in the card. Make a note whenever |
1455 | _any_ chip had some work to do, as this is considered an | |
1456 | indication that there will be more to do. Only when no chip | |
1457 | has any work does this outermost loop exit. | |
1458 | */ | |
1459 | do { | |
1460 | had_work = 0; | |
1461 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
1462 | base_addr = cinfo->base_addr + | |
1463 | (cy_chip_offset[chip] << index); | |
1464 | too_many = 0; | |
db05c3b1 | 1465 | while ((status = readb(base_addr + |
02f1175c JS |
1466 | (CySVRR << index))) != 0x00) { |
1467 | had_work++; | |
1468 | /* The purpose of the following test is to ensure that | |
1469 | no chip can monopolize the driver. This forces the | |
1470 | chips to be checked in a round-robin fashion (after | |
1471 | draining each of a bunch (1000) of characters). | |
1472 | */ | |
1473 | if (1000 < too_many++) { | |
1474 | break; | |
1475 | } | |
1476 | cyy_intr_chip(cinfo, chip, base_addr, status, | |
1477 | index); | |
1478 | } | |
1479 | } | |
1480 | } while (had_work); | |
1481 | ||
1482 | /* clear interrupts */ | |
1483 | spin_lock(&cinfo->card_lock); | |
1484 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
1485 | /* Cy_ClrIntr is 0x1800 */ | |
1486 | spin_unlock(&cinfo->card_lock); | |
1487 | return IRQ_HANDLED; | |
1488 | } /* cyy_interrupt */ | |
1da177e4 LT |
1489 | |
1490 | /***********************************************************/ | |
1491 | /********* End of block of Cyclom-Y specific code **********/ | |
1492 | /******** Start of block of Cyclades-Z specific code *********/ | |
1493 | /***********************************************************/ | |
1494 | ||
1495 | static int | |
02f1175c | 1496 | cyz_fetch_msg(struct cyclades_card *cinfo, |
1a86b5e3 | 1497 | __u32 * channel, __u8 * cmd, __u32 * param) |
1da177e4 | 1498 | { |
02f1175c JS |
1499 | struct FIRM_ID __iomem *firm_id; |
1500 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1501 | struct BOARD_CTRL __iomem *board_ctrl; | |
1502 | unsigned long loc_doorbell; | |
1503 | ||
1504 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1505 | if (!ISZLOADED(*cinfo)) { | |
096dcfce | 1506 | return -1; |
02f1175c | 1507 | } |
db05c3b1 | 1508 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1509 | board_ctrl = &zfw_ctrl->board_ctrl; |
1510 | ||
db05c3b1 | 1511 | loc_doorbell = readl(&((struct RUNTIME_9060 __iomem *) |
02f1175c JS |
1512 | (cinfo->ctl_addr))->loc_doorbell); |
1513 | if (loc_doorbell) { | |
1514 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
1515 | *channel = readl(&board_ctrl->fwcmd_channel); |
1516 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
02f1175c JS |
1517 | cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> |
1518 | loc_doorbell, 0xffffffff); | |
1519 | return 1; | |
1520 | } | |
1521 | return 0; | |
1522 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
1523 | |
1524 | static int | |
02f1175c | 1525 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 1526 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 1527 | { |
02f1175c JS |
1528 | struct FIRM_ID __iomem *firm_id; |
1529 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1530 | struct BOARD_CTRL __iomem *board_ctrl; | |
1a86b5e3 | 1531 | __u32 __iomem *pci_doorbell; |
02f1175c JS |
1532 | int index; |
1533 | ||
1534 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1535 | if (!ISZLOADED(*cinfo)) { | |
096dcfce | 1536 | return -1; |
02f1175c | 1537 | } |
db05c3b1 | 1538 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1539 | board_ctrl = &zfw_ctrl->board_ctrl; |
1540 | ||
1541 | index = 0; | |
1542 | pci_doorbell = | |
1543 | &((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->pci_doorbell; | |
db05c3b1 | 1544 | while ((readl(pci_doorbell) & 0xff) != 0) { |
02f1175c | 1545 | if (index++ == 1000) { |
db05c3b1 | 1546 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
1547 | } |
1548 | udelay(50L); | |
1549 | } | |
1550 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
1551 | cy_writel(&board_ctrl->hcmd_param, param); | |
1552 | cy_writel(pci_doorbell, (long)cmd); | |
1553 | ||
096dcfce | 1554 | return 0; |
02f1175c | 1555 | } /* cyz_issue_cmd */ |
1da177e4 LT |
1556 | |
1557 | static void | |
ad39c300 JS |
1558 | cyz_handle_rx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
1559 | struct BUF_CTRL __iomem *buf_ctrl) | |
1da177e4 | 1560 | { |
875b206b | 1561 | struct cyclades_card *cinfo = info->card; |
02f1175c | 1562 | struct tty_struct *tty = info->tty; |
ad39c300 | 1563 | int char_count; |
02f1175c | 1564 | int len; |
1da177e4 | 1565 | #ifdef BLOCKMOVE |
ce71b0ff | 1566 | unsigned char *buf; |
1da177e4 | 1567 | #else |
02f1175c | 1568 | char data; |
1da177e4 | 1569 | #endif |
ad39c300 | 1570 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 1571 | |
db05c3b1 JS |
1572 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
1573 | rx_put = readl(&buf_ctrl->rx_put); | |
1574 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
1575 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
1576 | if (rx_put >= rx_get) |
1577 | char_count = rx_put - rx_get; | |
1578 | else | |
1579 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 1580 | |
02f1175c | 1581 | if (char_count) { |
1da177e4 | 1582 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
1583 | info->mon.int_count++; |
1584 | info->mon.char_count += char_count; | |
1585 | if (char_count > info->mon.char_max) | |
1586 | info->mon.char_max = char_count; | |
1587 | info->mon.char_last = char_count; | |
1da177e4 | 1588 | #endif |
f7429034 | 1589 | if (tty == NULL) { |
02f1175c JS |
1590 | /* flush received characters */ |
1591 | new_rx_get = (new_rx_get + char_count) & | |
1592 | (rx_bufsize - 1); | |
1593 | info->rflush_count++; | |
1594 | } else { | |
1da177e4 | 1595 | #ifdef BLOCKMOVE |
02f1175c JS |
1596 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
1597 | for performance, but because of buffer boundaries, there | |
1598 | may be several steps to the operation */ | |
ce71b0ff JS |
1599 | while (1) { |
1600 | len = tty_prepare_flip_string(tty, &buf, | |
1601 | char_count); | |
1602 | if (!len) | |
1603 | break; | |
1604 | ||
1605 | len = min_t(unsigned int, min(len, char_count), | |
1606 | rx_bufsize - new_rx_get); | |
1607 | ||
1608 | memcpy_fromio(buf, cinfo->base_addr + | |
1609 | rx_bufaddr + new_rx_get, len); | |
1610 | ||
1611 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 1612 | (rx_bufsize - 1); |
ce71b0ff JS |
1613 | char_count -= len; |
1614 | info->icount.rx += len; | |
1615 | info->idle_stats.recv_bytes += len; | |
02f1175c | 1616 | } |
1da177e4 | 1617 | #else |
02f1175c JS |
1618 | len = tty_buffer_request_room(tty, char_count); |
1619 | while (len--) { | |
db05c3b1 | 1620 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c JS |
1621 | new_rx_get); |
1622 | new_rx_get = (new_rx_get + 1)& (rx_bufsize - 1); | |
1623 | tty_insert_flip_char(tty, data, TTY_NORMAL); | |
1624 | info->idle_stats.recv_bytes++; | |
1625 | info->icount.rx++; | |
1626 | } | |
1da177e4 LT |
1627 | #endif |
1628 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1629 | /* Recalculate the number of chars in the RX buffer and issue |
1630 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1631 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1632 | if (rx_put >= rx_get) |
1633 | char_count = rx_put - rx_get; | |
1634 | else | |
1635 | char_count = rx_put - rx_get + rx_bufsize; | |
db05c3b1 | 1636 | if (char_count >= (int)readl(&buf_ctrl->rx_threshold)) { |
02f1175c JS |
1637 | cy_sched_event(info, Cy_EVENT_Z_RX_FULL); |
1638 | } | |
1da177e4 | 1639 | #endif |
02f1175c JS |
1640 | info->idle_stats.recv_idle = jiffies; |
1641 | tty_schedule_flip(tty); | |
1642 | } | |
1643 | /* Update rx_get */ | |
1644 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1645 | } |
1da177e4 LT |
1646 | } |
1647 | ||
1648 | static void | |
ad39c300 JS |
1649 | cyz_handle_tx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
1650 | struct BUF_CTRL __iomem *buf_ctrl) | |
1da177e4 | 1651 | { |
875b206b | 1652 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1653 | struct tty_struct *tty = info->tty; |
1654 | char data; | |
ad39c300 | 1655 | int char_count; |
1da177e4 | 1656 | #ifdef BLOCKMOVE |
02f1175c | 1657 | int small_count; |
1da177e4 | 1658 | #endif |
ad39c300 | 1659 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1660 | |
02f1175c JS |
1661 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1662 | return; | |
1da177e4 | 1663 | |
db05c3b1 JS |
1664 | tx_get = readl(&buf_ctrl->tx_get); |
1665 | tx_put = readl(&buf_ctrl->tx_put); | |
1666 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1667 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1668 | if (tx_put >= tx_get) |
1669 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1670 | else | |
1671 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1672 | |
02f1175c | 1673 | if (char_count) { |
1da177e4 | 1674 | |
f7429034 | 1675 | if (tty == NULL) |
02f1175c | 1676 | goto ztxdone; |
1da177e4 | 1677 | |
02f1175c JS |
1678 | if (info->x_char) { /* send special char */ |
1679 | data = info->x_char; | |
1da177e4 | 1680 | |
02f1175c JS |
1681 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1682 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1683 | info->x_char = 0; | |
1684 | char_count--; | |
1685 | info->icount.tx++; | |
02f1175c | 1686 | } |
1da177e4 | 1687 | #ifdef BLOCKMOVE |
02f1175c JS |
1688 | while (0 < (small_count = min_t(unsigned int, |
1689 | tx_bufsize - tx_put, min_t(unsigned int, | |
1690 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1691 | min_t(unsigned int, info->xmit_cnt, | |
1692 | char_count))))) { | |
1693 | ||
1694 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1695 | tx_put), | |
1696 | &info->xmit_buf[info->xmit_tail], | |
1697 | small_count); | |
1698 | ||
1699 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1700 | char_count -= small_count; | |
1701 | info->icount.tx += small_count; | |
1702 | info->xmit_cnt -= small_count; | |
1703 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1704 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1705 | } |
1da177e4 | 1706 | #else |
02f1175c JS |
1707 | while (info->xmit_cnt && char_count) { |
1708 | data = info->xmit_buf[info->xmit_tail]; | |
1709 | info->xmit_cnt--; | |
1710 | info->xmit_tail = (info->xmit_tail + 1) & | |
1711 | (SERIAL_XMIT_SIZE - 1); | |
1712 | ||
1713 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1714 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1715 | char_count--; | |
1716 | info->icount.tx++; | |
02f1175c | 1717 | } |
1da177e4 | 1718 | #endif |
02f1175c JS |
1719 | ztxdone: |
1720 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
1721 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); | |
1722 | } | |
1723 | /* Update tx_put */ | |
1724 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1725 | } |
1da177e4 LT |
1726 | } |
1727 | ||
02f1175c | 1728 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1729 | { |
02f1175c JS |
1730 | struct tty_struct *tty; |
1731 | struct cyclades_port *info; | |
ad39c300 JS |
1732 | static struct FIRM_ID __iomem *firm_id; |
1733 | static struct ZFW_CTRL __iomem *zfw_ctrl; | |
1734 | static struct BOARD_CTRL __iomem *board_ctrl; | |
1735 | static struct CH_CTRL __iomem *ch_ctrl; | |
1736 | static struct BUF_CTRL __iomem *buf_ctrl; | |
1a86b5e3 KK |
1737 | __u32 channel; |
1738 | __u8 cmd; | |
1739 | __u32 param; | |
1740 | __u32 hw_ver, fw_ver; | |
02f1175c JS |
1741 | int special_count; |
1742 | int delta_count; | |
1743 | ||
1744 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
db05c3b1 | 1745 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 1746 | board_ctrl = &zfw_ctrl->board_ctrl; |
db05c3b1 JS |
1747 | fw_ver = readl(&board_ctrl->fw_version); |
1748 | hw_ver = readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> | |
02f1175c JS |
1749 | mail_box_0); |
1750 | ||
1751 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1752 | special_count = 0; | |
1753 | delta_count = 0; | |
dd025c0c | 1754 | info = &cinfo->ports[channel]; |
f7429034 | 1755 | if ((tty = info->tty) == NULL) |
02f1175c | 1756 | continue; |
f7429034 | 1757 | |
02f1175c JS |
1758 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
1759 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
1760 | ||
1761 | switch (cmd) { | |
1762 | case C_CM_PR_ERROR: | |
1763 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1764 | info->icount.rx++; | |
1765 | special_count++; | |
1766 | break; | |
1767 | case C_CM_FR_ERROR: | |
1768 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1769 | info->icount.rx++; | |
1770 | special_count++; | |
1771 | break; | |
1772 | case C_CM_RXBRK: | |
1773 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1774 | info->icount.rx++; | |
1775 | special_count++; | |
1776 | break; | |
1777 | case C_CM_MDCD: | |
1778 | info->icount.dcd++; | |
1779 | delta_count++; | |
1780 | if (info->flags & ASYNC_CHECK_CD) { | |
1781 | if ((fw_ver > 241 ? ((u_long) param) : | |
db05c3b1 | 1782 | readl(&ch_ctrl->rs_status)) & |
02f1175c JS |
1783 | C_RS_DCD) { |
1784 | cy_sched_event(info, | |
1785 | Cy_EVENT_OPEN_WAKEUP); | |
1786 | } else { | |
1787 | cy_sched_event(info, Cy_EVENT_HANGUP); | |
1788 | } | |
1789 | } | |
1790 | break; | |
1791 | case C_CM_MCTS: | |
1792 | info->icount.cts++; | |
1793 | delta_count++; | |
1794 | break; | |
1795 | case C_CM_MRI: | |
1796 | info->icount.rng++; | |
1797 | delta_count++; | |
1798 | break; | |
1799 | case C_CM_MDSR: | |
1800 | info->icount.dsr++; | |
1801 | delta_count++; | |
1802 | break; | |
1da177e4 | 1803 | #ifdef Z_WAKE |
02f1175c JS |
1804 | case C_CM_IOCTLW: |
1805 | cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP); | |
1806 | break; | |
1da177e4 LT |
1807 | #endif |
1808 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1809 | case C_CM_RXHIWM: |
1810 | case C_CM_RXNNDT: | |
1811 | case C_CM_INTBACK2: | |
1812 | /* Reception Interrupt */ | |
1da177e4 | 1813 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1814 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1815 | "port %ld\n", info->card, channel); | |
1da177e4 | 1816 | #endif |
02f1175c JS |
1817 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); |
1818 | break; | |
1819 | case C_CM_TXBEMPTY: | |
1820 | case C_CM_TXLOWWM: | |
1821 | case C_CM_INTBACK: | |
1822 | /* Transmission Interrupt */ | |
1da177e4 | 1823 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1824 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1825 | "port %ld\n", info->card, channel); | |
1da177e4 | 1826 | #endif |
02f1175c JS |
1827 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); |
1828 | break; | |
1829 | #endif /* CONFIG_CYZ_INTR */ | |
1830 | case C_CM_FATAL: | |
1831 | /* should do something with this !!! */ | |
1832 | break; | |
1833 | default: | |
1834 | break; | |
1835 | } | |
1836 | if (delta_count) | |
1837 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); | |
1838 | if (special_count) | |
1839 | tty_schedule_flip(tty); | |
1da177e4 | 1840 | } |
1da177e4 LT |
1841 | } |
1842 | ||
1843 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1844 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1845 | { |
f7429034 | 1846 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1847 | |
f7429034 | 1848 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 1849 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 | 1850 | printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n",irq); |
1da177e4 | 1851 | #endif |
02f1175c JS |
1852 | return IRQ_NONE; /* spurious interrupt */ |
1853 | } | |
1da177e4 | 1854 | |
f7429034 | 1855 | if (unlikely(!ISZLOADED(*cinfo))) { |
1da177e4 | 1856 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1857 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1858 | "(IRQ%d).\n", irq); | |
1da177e4 | 1859 | #endif |
02f1175c JS |
1860 | return IRQ_NONE; |
1861 | } | |
1da177e4 | 1862 | |
02f1175c JS |
1863 | /* Handle the interrupts */ |
1864 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1865 | |
02f1175c JS |
1866 | return IRQ_HANDLED; |
1867 | } /* cyz_interrupt */ | |
1da177e4 | 1868 | |
02f1175c | 1869 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1870 | { |
02f1175c | 1871 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1872 | struct cyclades_card *card = info->card; |
02f1175c | 1873 | int retval; |
875b206b | 1874 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1875 | unsigned long flags; |
1876 | ||
9fa1b3b1 | 1877 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1878 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1879 | if (retval != 0) { |
21719191 | 1880 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1881 | info->line, retval); |
1882 | } | |
9fa1b3b1 | 1883 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1884 | } |
1885 | ||
02f1175c | 1886 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1887 | |
02f1175c | 1888 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1889 | { |
02f1175c JS |
1890 | struct cyclades_card *cinfo; |
1891 | struct cyclades_port *info; | |
1892 | struct tty_struct *tty; | |
c4923b4f JS |
1893 | struct FIRM_ID __iomem *firm_id; |
1894 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1895 | struct BOARD_CTRL __iomem *board_ctrl; | |
1896 | struct CH_CTRL __iomem *ch_ctrl; | |
1897 | struct BUF_CTRL __iomem *buf_ctrl; | |
b7050906 | 1898 | unsigned long expires = jiffies + HZ; |
02f1175c | 1899 | int card, port; |
1da177e4 | 1900 | |
02f1175c JS |
1901 | for (card = 0; card < NR_CARDS; card++) { |
1902 | cinfo = &cy_card[card]; | |
1903 | ||
1904 | if (!IS_CYC_Z(*cinfo)) | |
1905 | continue; | |
1906 | if (!ISZLOADED(*cinfo)) | |
1907 | continue; | |
1908 | ||
1909 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1910 | zfw_ctrl = cinfo->base_addr + | |
db05c3b1 | 1911 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 1912 | board_ctrl = &(zfw_ctrl->board_ctrl); |
1da177e4 LT |
1913 | |
1914 | /* Skip first polling cycle to avoid racing conditions with the FW */ | |
02f1175c | 1915 | if (!cinfo->intr_enabled) { |
db05c3b1 | 1916 | cinfo->nports = (int)readl(&board_ctrl->n_channel); |
02f1175c JS |
1917 | cinfo->intr_enabled = 1; |
1918 | continue; | |
1919 | } | |
1da177e4 | 1920 | |
02f1175c | 1921 | cyz_handle_cmd(cinfo); |
1da177e4 | 1922 | |
02f1175c | 1923 | for (port = 0; port < cinfo->nports; port++) { |
dd025c0c | 1924 | info = &cinfo->ports[port]; |
02f1175c JS |
1925 | tty = info->tty; |
1926 | ch_ctrl = &(zfw_ctrl->ch_ctrl[port]); | |
1927 | buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); | |
1da177e4 | 1928 | |
02f1175c JS |
1929 | if (!info->throttle) |
1930 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); | |
1931 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); | |
1932 | } | |
1933 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1934 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1935 | } |
b7050906 | 1936 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1937 | } /* cyz_poll */ |
1da177e4 | 1938 | |
02f1175c | 1939 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1940 | |
1941 | /********** End of block of Cyclades-Z specific code *********/ | |
1942 | /***********************************************************/ | |
1943 | ||
1da177e4 LT |
1944 | /* This is called whenever a port becomes active; |
1945 | interrupts are enabled and DTR & RTS are turned on. | |
1946 | */ | |
02f1175c | 1947 | static int startup(struct cyclades_port *info) |
1da177e4 | 1948 | { |
875b206b | 1949 | struct cyclades_card *card; |
02f1175c JS |
1950 | unsigned long flags; |
1951 | int retval = 0; | |
1952 | void __iomem *base_addr; | |
875b206b | 1953 | int chip, channel, index; |
02f1175c | 1954 | unsigned long page; |
1da177e4 | 1955 | |
02f1175c | 1956 | card = info->card; |
875b206b | 1957 | channel = info->line - card->first_line; |
1da177e4 | 1958 | |
02f1175c JS |
1959 | page = get_zeroed_page(GFP_KERNEL); |
1960 | if (!page) | |
1961 | return -ENOMEM; | |
1da177e4 | 1962 | |
9fa1b3b1 | 1963 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1964 | |
02f1175c JS |
1965 | if (info->flags & ASYNC_INITIALIZED) { |
1966 | free_page(page); | |
1967 | goto errout; | |
1968 | } | |
1da177e4 | 1969 | |
02f1175c JS |
1970 | if (!info->type) { |
1971 | if (info->tty) { | |
1972 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
1973 | } | |
1974 | free_page(page); | |
1975 | goto errout; | |
1976 | } | |
1da177e4 | 1977 | |
02f1175c JS |
1978 | if (info->xmit_buf) |
1979 | free_page(page); | |
1980 | else | |
1981 | info->xmit_buf = (unsigned char *)page; | |
1da177e4 | 1982 | |
9fa1b3b1 | 1983 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1984 | |
02f1175c | 1985 | set_line_char(info); |
1da177e4 | 1986 | |
875b206b | 1987 | if (!IS_CYC_Z(*card)) { |
02f1175c JS |
1988 | chip = channel >> 2; |
1989 | channel &= 0x03; | |
875b206b JS |
1990 | index = card->bus_index; |
1991 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
1992 | |
1993 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
1994 | printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " |
1995 | "base_addr %p\n", | |
1996 | card, chip, channel, base_addr); | |
1da177e4 | 1997 | #endif |
9fa1b3b1 | 1998 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1999 | |
02f1175c | 2000 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1da177e4 | 2001 | |
02f1175c JS |
2002 | cy_writeb(base_addr + (CyRTPR << index), |
2003 | (info->default_timeout ? info->default_timeout : 0x02)); | |
2004 | /* 10ms rx timeout */ | |
1da177e4 | 2005 | |
02f1175c JS |
2006 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
2007 | index); | |
1da177e4 | 2008 | |
02f1175c JS |
2009 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
2010 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); | |
2011 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); | |
1da177e4 LT |
2012 | |
2013 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
2014 | printk(KERN_DEBUG "cyc:startup raising DTR\n"); |
2015 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2016 | readb(base_addr + (CyMSVR1 << index)), |
2017 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 LT |
2018 | #endif |
2019 | ||
02f1175c | 2020 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 2021 | readb(base_addr + (CySRER << index)) | CyRxData); |
02f1175c | 2022 | info->flags |= ASYNC_INITIALIZED; |
1da177e4 | 2023 | |
02f1175c JS |
2024 | if (info->tty) { |
2025 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2026 | } | |
2027 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2028 | info->breakon = info->breakoff = 0; | |
2029 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2030 | info->idle_stats.in_use = | |
2031 | info->idle_stats.recv_idle = | |
2032 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 2033 | |
9fa1b3b1 | 2034 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2035 | |
02f1175c JS |
2036 | } else { |
2037 | struct FIRM_ID __iomem *firm_id; | |
2038 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2039 | struct BOARD_CTRL __iomem *board_ctrl; | |
2040 | struct CH_CTRL __iomem *ch_ctrl; | |
1da177e4 | 2041 | |
875b206b | 2042 | base_addr = card->base_addr; |
1da177e4 | 2043 | |
02f1175c | 2044 | firm_id = base_addr + ID_ADDRESS; |
875b206b | 2045 | if (!ISZLOADED(*card)) { |
02f1175c JS |
2046 | return -ENODEV; |
2047 | } | |
1da177e4 | 2048 | |
875b206b | 2049 | zfw_ctrl = card->base_addr + |
db05c3b1 | 2050 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2051 | board_ctrl = &zfw_ctrl->board_ctrl; |
2052 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 LT |
2053 | |
2054 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
2055 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
2056 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 | 2057 | #endif |
9fa1b3b1 | 2058 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 2059 | |
02f1175c | 2060 | cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); |
1da177e4 LT |
2061 | #ifdef Z_WAKE |
2062 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
2063 | cy_writel(&ch_ctrl[channel].intr_enable, |
2064 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
2065 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 2066 | #else |
02f1175c JS |
2067 | cy_writel(&ch_ctrl[channel].intr_enable, |
2068 | C_IN_IOCTLW | C_IN_MDCD); | |
2069 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
2070 | #else |
2071 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
2072 | cy_writel(&ch_ctrl[channel].intr_enable, |
2073 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
2074 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 2075 | #else |
02f1175c JS |
2076 | cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD); |
2077 | #endif /* CONFIG_CYZ_INTR */ | |
2078 | #endif /* Z_WAKE */ | |
2079 | ||
875b206b | 2080 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2081 | if (retval != 0) { |
21719191 JS |
2082 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
2083 | "%x\n", info->line, retval); | |
02f1175c | 2084 | } |
1da177e4 | 2085 | |
02f1175c | 2086 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 2087 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 2088 | if (retval != 0) { |
21719191 JS |
2089 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
2090 | "%x\n", info->line, retval); | |
02f1175c | 2091 | } |
1da177e4 | 2092 | |
02f1175c JS |
2093 | /* set timeout !!! */ |
2094 | /* set RTS and DTR !!! */ | |
2095 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 | 2096 | readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | |
02f1175c | 2097 | C_RS_DTR); |
9fa1b3b1 | 2098 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2099 | if (retval != 0) { |
21719191 JS |
2100 | printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was " |
2101 | "%x\n", info->line, retval); | |
02f1175c | 2102 | } |
1da177e4 | 2103 | #ifdef CY_DEBUG_DTR |
21719191 | 2104 | printk(KERN_DEBUG "cyc:startup raising Z DTR\n"); |
1da177e4 LT |
2105 | #endif |
2106 | ||
02f1175c JS |
2107 | /* enable send, recv, modem !!! */ |
2108 | ||
2109 | info->flags |= ASYNC_INITIALIZED; | |
2110 | if (info->tty) { | |
2111 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2112 | } | |
2113 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2114 | info->breakon = info->breakoff = 0; | |
2115 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
2116 | info->idle_stats.in_use = | |
2117 | info->idle_stats.recv_idle = | |
2118 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 2119 | |
9fa1b3b1 | 2120 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2121 | } |
1da177e4 LT |
2122 | |
2123 | #ifdef CY_DEBUG_OPEN | |
21719191 | 2124 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
2125 | #endif |
2126 | return 0; | |
2127 | ||
2128 | errout: | |
9fa1b3b1 | 2129 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2130 | return retval; |
02f1175c | 2131 | } /* startup */ |
1da177e4 | 2132 | |
02f1175c | 2133 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 2134 | { |
875b206b | 2135 | struct cyclades_card *card; |
02f1175c JS |
2136 | unsigned long flags; |
2137 | void __iomem *base_addr; | |
875b206b | 2138 | int chip, channel, index; |
1da177e4 | 2139 | |
02f1175c | 2140 | card = info->card; |
875b206b JS |
2141 | channel = info->line - card->first_line; |
2142 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2143 | chip = channel >> 2; |
2144 | channel &= 0x03; | |
875b206b JS |
2145 | index = card->bus_index; |
2146 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 2147 | |
9fa1b3b1 | 2148 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2149 | cy_writeb(base_addr + (CyCAR << index), channel); |
2150 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2151 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 2152 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2153 | } else { |
1da177e4 | 2154 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 2155 | int retval; |
1da177e4 | 2156 | |
9fa1b3b1 | 2157 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 2158 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 2159 | if (retval != 0) { |
21719191 JS |
2160 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
2161 | "%x\n", info->line, retval); | |
02f1175c | 2162 | } |
9fa1b3b1 | 2163 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2164 | #else /* CONFIG_CYZ_INTR */ |
2165 | /* Don't have to do anything at this time */ | |
2166 | #endif /* CONFIG_CYZ_INTR */ | |
2167 | } | |
2168 | } /* start_xmit */ | |
1da177e4 LT |
2169 | |
2170 | /* | |
2171 | * This routine shuts down a serial port; interrupts are disabled, | |
2172 | * and DTR is dropped if the hangup on close termio flag is on. | |
2173 | */ | |
02f1175c | 2174 | static void shutdown(struct cyclades_port *info) |
1da177e4 | 2175 | { |
875b206b | 2176 | struct cyclades_card *card; |
02f1175c JS |
2177 | unsigned long flags; |
2178 | void __iomem *base_addr; | |
875b206b | 2179 | int chip, channel, index; |
02f1175c JS |
2180 | |
2181 | if (!(info->flags & ASYNC_INITIALIZED)) { | |
2182 | return; | |
2183 | } | |
2184 | ||
2185 | card = info->card; | |
875b206b JS |
2186 | channel = info->line - card->first_line; |
2187 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2188 | chip = channel >> 2; |
2189 | channel &= 0x03; | |
875b206b JS |
2190 | index = card->bus_index; |
2191 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
2192 | |
2193 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
2194 | printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " |
2195 | "channel %d, base_addr %p\n", | |
2196 | card, chip, channel, base_addr); | |
1da177e4 LT |
2197 | #endif |
2198 | ||
9fa1b3b1 | 2199 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2200 | |
2201 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
2202 | wake_up_interruptible(&info->delta_msr_wait); | |
1da177e4 | 2203 | |
02f1175c JS |
2204 | if (info->xmit_buf) { |
2205 | unsigned char *temp; | |
2206 | temp = info->xmit_buf; | |
2207 | info->xmit_buf = NULL; | |
2208 | free_page((unsigned long)temp); | |
2209 | } | |
2210 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
2211 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2212 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); | |
2213 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); | |
1da177e4 | 2214 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2215 | printk(KERN_DEBUG "cyc shutdown dropping DTR\n"); |
2216 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2217 | readb(base_addr + (CyMSVR1 << index)), |
2218 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2219 | #endif |
02f1175c JS |
2220 | } |
2221 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); | |
2222 | /* it may be appropriate to clear _XMIT at | |
2223 | some later date (after testing)!!! */ | |
2224 | ||
2225 | if (info->tty) { | |
2226 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2227 | } | |
2228 | info->flags &= ~ASYNC_INITIALIZED; | |
9fa1b3b1 | 2229 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2230 | } else { |
2231 | struct FIRM_ID __iomem *firm_id; | |
2232 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2233 | struct BOARD_CTRL __iomem *board_ctrl; | |
2234 | struct CH_CTRL __iomem *ch_ctrl; | |
2235 | int retval; | |
2236 | ||
875b206b | 2237 | base_addr = card->base_addr; |
1da177e4 | 2238 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2239 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
2240 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 LT |
2241 | #endif |
2242 | ||
02f1175c | 2243 | firm_id = base_addr + ID_ADDRESS; |
875b206b | 2244 | if (!ISZLOADED(*card)) { |
02f1175c JS |
2245 | return; |
2246 | } | |
1da177e4 | 2247 | |
875b206b | 2248 | zfw_ctrl = card->base_addr + |
db05c3b1 | 2249 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2250 | board_ctrl = &zfw_ctrl->board_ctrl; |
2251 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 | 2252 | |
9fa1b3b1 | 2253 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 2254 | |
02f1175c JS |
2255 | if (info->xmit_buf) { |
2256 | unsigned char *temp; | |
2257 | temp = info->xmit_buf; | |
2258 | info->xmit_buf = NULL; | |
2259 | free_page((unsigned long)temp); | |
1da177e4 | 2260 | } |
02f1175c JS |
2261 | |
2262 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { | |
2263 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 | 2264 | (__u32)(readl(&ch_ctrl[channel].rs_control) & |
02f1175c | 2265 | ~(C_RS_RTS | C_RS_DTR))); |
875b206b | 2266 | retval = cyz_issue_cmd(info->card, channel, |
02f1175c JS |
2267 | C_CM_IOCTLM, 0L); |
2268 | if (retval != 0) { | |
21719191 JS |
2269 | printk(KERN_ERR"cyc:shutdown retval on ttyC%d " |
2270 | "was %x\n", info->line, retval); | |
02f1175c | 2271 | } |
1da177e4 | 2272 | #ifdef CY_DEBUG_DTR |
21719191 | 2273 | printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n"); |
1da177e4 | 2274 | #endif |
02f1175c | 2275 | } |
1da177e4 | 2276 | |
02f1175c JS |
2277 | if (info->tty) { |
2278 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2279 | } | |
2280 | info->flags &= ~ASYNC_INITIALIZED; | |
2281 | ||
9fa1b3b1 | 2282 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2283 | } |
1da177e4 LT |
2284 | |
2285 | #ifdef CY_DEBUG_OPEN | |
21719191 | 2286 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 2287 | #endif |
02f1175c | 2288 | } /* shutdown */ |
1da177e4 LT |
2289 | |
2290 | /* | |
2291 | * ------------------------------------------------------------ | |
2292 | * cy_open() and friends | |
2293 | * ------------------------------------------------------------ | |
2294 | */ | |
2295 | ||
2296 | static int | |
02f1175c JS |
2297 | block_til_ready(struct tty_struct *tty, struct file *filp, |
2298 | struct cyclades_port *info) | |
1da177e4 | 2299 | { |
02f1175c JS |
2300 | DECLARE_WAITQUEUE(wait, current); |
2301 | struct cyclades_card *cinfo; | |
2302 | unsigned long flags; | |
2303 | int chip, channel, index; | |
2304 | int retval; | |
2305 | void __iomem *base_addr; | |
2306 | ||
875b206b | 2307 | cinfo = info->card; |
02f1175c JS |
2308 | channel = info->line - cinfo->first_line; |
2309 | ||
2310 | /* | |
2311 | * If the device is in the middle of being closed, then block | |
2312 | * until it's done, and then try again. | |
2313 | */ | |
2314 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2c7fea99 JS |
2315 | wait_event_interruptible(info->close_wait, |
2316 | !(info->flags & ASYNC_CLOSING)); | |
096dcfce | 2317 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
1da177e4 | 2318 | } |
02f1175c JS |
2319 | |
2320 | /* | |
2321 | * If non-blocking mode is set, then make the check up front | |
2322 | * and then exit. | |
2323 | */ | |
2324 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { | |
2325 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2326 | return 0; | |
2327 | } | |
2328 | ||
2329 | /* | |
2330 | * Block waiting for the carrier detect and the line to become | |
2331 | * free (i.e., not in use by the callout). While we are in | |
2332 | * this loop, info->count is dropped by one, so that | |
2333 | * cy_close() knows when to free things. We restore it upon | |
2334 | * exit, either normal or abnormal. | |
2335 | */ | |
2336 | retval = 0; | |
2337 | add_wait_queue(&info->open_wait, &wait); | |
1da177e4 | 2338 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2339 | printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, " |
2340 | "count = %d\n", info->line, info->count); | |
1da177e4 | 2341 | #endif |
9fa1b3b1 | 2342 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2343 | if (!tty_hung_up_p(filp)) |
2344 | info->count--; | |
9fa1b3b1 | 2345 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2346 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
2347 | printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to " |
2348 | "%d\n", current->pid, info->count); | |
1da177e4 | 2349 | #endif |
02f1175c JS |
2350 | info->blocked_open++; |
2351 | ||
2352 | if (!IS_CYC_Z(*cinfo)) { | |
2353 | chip = channel >> 2; | |
2354 | channel &= 0x03; | |
2355 | index = cinfo->bus_index; | |
2356 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); | |
2357 | ||
2358 | while (1) { | |
9fa1b3b1 | 2359 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2360 | if ((tty->termios->c_cflag & CBAUD)) { |
2361 | cy_writeb(base_addr + (CyCAR << index), | |
2362 | (u_char) channel); | |
2363 | cy_writeb(base_addr + (CyMSVR1 << index), | |
2364 | CyRTS); | |
2365 | cy_writeb(base_addr + (CyMSVR2 << index), | |
2366 | CyDTR); | |
1da177e4 | 2367 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2368 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2369 | "DTR\n"); | |
2370 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2371 | readb(base_addr + (CyMSVR1 << index)), |
2372 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2373 | #endif |
02f1175c | 2374 | } |
9fa1b3b1 | 2375 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2376 | |
02f1175c JS |
2377 | set_current_state(TASK_INTERRUPTIBLE); |
2378 | if (tty_hung_up_p(filp) || | |
2379 | !(info->flags & ASYNC_INITIALIZED)) { | |
2380 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2381 | -EAGAIN : -ERESTARTSYS); | |
2382 | break; | |
2383 | } | |
1da177e4 | 2384 | |
9fa1b3b1 | 2385 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2386 | cy_writeb(base_addr + (CyCAR << index), |
2387 | (u_char) channel); | |
2388 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || | |
db05c3b1 | 2389 | (readb(base_addr + |
02f1175c | 2390 | (CyMSVR1 << index)) & CyDCD))) { |
9fa1b3b1 | 2391 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c JS |
2392 | break; |
2393 | } | |
9fa1b3b1 | 2394 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2395 | |
02f1175c JS |
2396 | if (signal_pending(current)) { |
2397 | retval = -ERESTARTSYS; | |
2398 | break; | |
2399 | } | |
1da177e4 | 2400 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2401 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2402 | "ttyC%d, count = %d\n", | |
2403 | info->line, info->count); | |
1da177e4 | 2404 | #endif |
02f1175c | 2405 | schedule(); |
1da177e4 | 2406 | } |
02f1175c JS |
2407 | } else { |
2408 | struct FIRM_ID __iomem *firm_id; | |
2409 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2410 | struct BOARD_CTRL __iomem *board_ctrl; | |
2411 | struct CH_CTRL __iomem *ch_ctrl; | |
02f1175c JS |
2412 | |
2413 | base_addr = cinfo->base_addr; | |
2414 | firm_id = base_addr + ID_ADDRESS; | |
2415 | if (!ISZLOADED(*cinfo)) { | |
cc0a8fbb | 2416 | __set_current_state(TASK_RUNNING); |
02f1175c JS |
2417 | remove_wait_queue(&info->open_wait, &wait); |
2418 | return -EINVAL; | |
2419 | } | |
2420 | ||
db05c3b1 | 2421 | zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr)& 0xfffff); |
02f1175c JS |
2422 | board_ctrl = &zfw_ctrl->board_ctrl; |
2423 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
2424 | ||
2425 | while (1) { | |
2426 | if ((tty->termios->c_cflag & CBAUD)) { | |
2427 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 JS |
2428 | readl(&ch_ctrl[channel].rs_control) | |
2429 | C_RS_RTS | C_RS_DTR); | |
9fa1b3b1 | 2430 | retval = cyz_issue_cmd(cinfo, |
db05c3b1 | 2431 | channel, C_CM_IOCTLM, 0L); |
02f1175c | 2432 | if (retval != 0) { |
21719191 JS |
2433 | printk(KERN_ERR "cyc:block_til_ready " |
2434 | "retval on ttyC%d was %x\n", | |
02f1175c JS |
2435 | info->line, retval); |
2436 | } | |
1da177e4 | 2437 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2438 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2439 | "Z DTR\n"); | |
1da177e4 | 2440 | #endif |
02f1175c | 2441 | } |
1da177e4 | 2442 | |
02f1175c JS |
2443 | set_current_state(TASK_INTERRUPTIBLE); |
2444 | if (tty_hung_up_p(filp) || | |
2445 | !(info->flags & ASYNC_INITIALIZED)) { | |
2446 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? | |
2447 | -EAGAIN : -ERESTARTSYS); | |
2448 | break; | |
2449 | } | |
2450 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || | |
db05c3b1 | 2451 | (readl(&ch_ctrl[channel].rs_status) & |
02f1175c JS |
2452 | C_RS_DCD))) { |
2453 | break; | |
2454 | } | |
2455 | if (signal_pending(current)) { | |
2456 | retval = -ERESTARTSYS; | |
2457 | break; | |
2458 | } | |
1da177e4 | 2459 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2460 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2461 | "ttyC%d, count = %d\n", | |
2462 | info->line, info->count); | |
1da177e4 | 2463 | #endif |
02f1175c JS |
2464 | schedule(); |
2465 | } | |
1da177e4 | 2466 | } |
cc0a8fbb | 2467 | __set_current_state(TASK_RUNNING); |
02f1175c JS |
2468 | remove_wait_queue(&info->open_wait, &wait); |
2469 | if (!tty_hung_up_p(filp)) { | |
2470 | info->count++; | |
1da177e4 | 2471 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
2472 | printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing " |
2473 | "count to %d\n", current->pid, info->count); | |
1da177e4 | 2474 | #endif |
02f1175c JS |
2475 | } |
2476 | info->blocked_open--; | |
1da177e4 | 2477 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2478 | printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, " |
2479 | "count = %d\n", info->line, info->count); | |
1da177e4 | 2480 | #endif |
02f1175c JS |
2481 | if (retval) |
2482 | return retval; | |
2483 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2484 | return 0; | |
2485 | } /* block_til_ready */ | |
1da177e4 LT |
2486 | |
2487 | /* | |
2488 | * This routine is called whenever a serial port is opened. It | |
2489 | * performs the serial-specific initialization for the tty structure. | |
2490 | */ | |
02f1175c | 2491 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2492 | { |
02f1175c | 2493 | struct cyclades_port *info; |
dd025c0c | 2494 | unsigned int i; |
02f1175c | 2495 | int retval, line; |
1da177e4 | 2496 | |
02f1175c JS |
2497 | line = tty->index; |
2498 | if ((line < 0) || (NR_PORTS <= line)) { | |
2499 | return -ENODEV; | |
2500 | } | |
dd025c0c JS |
2501 | for (i = 0; i < NR_CARDS; i++) |
2502 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
2503 | line >= cy_card[i].first_line) | |
2504 | break; | |
2505 | if (i >= NR_CARDS) | |
2506 | return -ENODEV; | |
2507 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
02f1175c JS |
2508 | if (info->line < 0) { |
2509 | return -ENODEV; | |
2510 | } | |
1da177e4 | 2511 | |
02f1175c JS |
2512 | /* If the card's firmware hasn't been loaded, |
2513 | treat it as absent from the system. This | |
2514 | will make the user pay attention. | |
2515 | */ | |
875b206b JS |
2516 | if (IS_CYC_Z(*info->card)) { |
2517 | struct cyclades_card *cinfo = info->card; | |
02f1175c JS |
2518 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
2519 | ||
2520 | if (!ISZLOADED(*cinfo)) { | |
db05c3b1 | 2521 | if (((ZE_V1 == readl(&((struct RUNTIME_9060 __iomem *) |
02f1175c JS |
2522 | (cinfo->ctl_addr))->mail_box_0)) && |
2523 | Z_FPGA_CHECK(*cinfo)) && | |
db05c3b1 | 2524 | (ZFIRM_HLT == readl( |
02f1175c | 2525 | &firm_id->signature))) { |
21719191 JS |
2526 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
2527 | "need an external power supply for " | |
2528 | "this number of ports.\nFirmware " | |
2529 | "halted.\n"); | |
02f1175c | 2530 | } else { |
21719191 JS |
2531 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
2532 | "yet loaded\n"); | |
02f1175c JS |
2533 | } |
2534 | return -ENODEV; | |
2535 | } | |
2536 | #ifdef CONFIG_CYZ_INTR | |
2537 | else { | |
2538 | /* In case this Z board is operating in interrupt mode, its | |
2539 | interrupts should be enabled as soon as the first open | |
2540 | happens to one of its ports. */ | |
2541 | if (!cinfo->intr_enabled) { | |
2542 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2543 | struct BOARD_CTRL __iomem *board_ctrl; | |
2544 | ||
2545 | zfw_ctrl = cinfo->base_addr + | |
db05c3b1 JS |
2546 | (readl(&firm_id->zfwctrl_addr) & |
2547 | 0xfffff); | |
02f1175c JS |
2548 | |
2549 | board_ctrl = &zfw_ctrl->board_ctrl; | |
2550 | ||
2551 | /* Enable interrupts on the PLX chip */ | |
2552 | cy_writew(cinfo->ctl_addr + 0x68, | |
db05c3b1 | 2553 | readw(cinfo->ctl_addr + 0x68) | 0x0900); |
02f1175c JS |
2554 | /* Enable interrupts on the FW */ |
2555 | retval = cyz_issue_cmd(cinfo, 0, | |
2556 | C_CM_IRQ_ENBL, 0L); | |
2557 | if (retval != 0) { | |
21719191 JS |
2558 | printk(KERN_ERR "cyc:IRQ enable retval " |
2559 | "was %x\n", retval); | |
02f1175c JS |
2560 | } |
2561 | cinfo->nports = | |
db05c3b1 | 2562 | (int)readl(&board_ctrl->n_channel); |
02f1175c JS |
2563 | cinfo->intr_enabled = 1; |
2564 | } | |
1da177e4 | 2565 | } |
02f1175c JS |
2566 | #endif /* CONFIG_CYZ_INTR */ |
2567 | /* Make sure this Z port really exists in hardware */ | |
2568 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
2569 | return -ENODEV; | |
1da177e4 | 2570 | } |
1da177e4 | 2571 | #ifdef CY_DEBUG_OTHER |
21719191 | 2572 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 2573 | #endif |
02f1175c JS |
2574 | tty->driver_data = info; |
2575 | info->tty = tty; | |
2576 | if (serial_paranoia_check(info, tty->name, "cy_open")) { | |
2577 | return -ENODEV; | |
2578 | } | |
1da177e4 | 2579 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2580 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
2581 | info->count); | |
1da177e4 | 2582 | #endif |
02f1175c | 2583 | info->count++; |
1da177e4 | 2584 | #ifdef CY_DEBUG_COUNT |
21719191 | 2585 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
02f1175c | 2586 | current->pid, info->count); |
1da177e4 | 2587 | #endif |
1da177e4 | 2588 | |
02f1175c JS |
2589 | /* |
2590 | * If the port is the middle of closing, bail out now | |
2591 | */ | |
2592 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { | |
2c7fea99 JS |
2593 | wait_event_interruptible(info->close_wait, |
2594 | !(info->flags & ASYNC_CLOSING)); | |
096dcfce | 2595 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
02f1175c | 2596 | } |
1da177e4 | 2597 | |
02f1175c JS |
2598 | /* |
2599 | * Start up serial port | |
2600 | */ | |
2601 | retval = startup(info); | |
2602 | if (retval) { | |
2603 | return retval; | |
2604 | } | |
1da177e4 | 2605 | |
02f1175c JS |
2606 | retval = block_til_ready(tty, filp, info); |
2607 | if (retval) { | |
1da177e4 | 2608 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2609 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
2610 | "with %d\n", retval); | |
1da177e4 | 2611 | #endif |
02f1175c JS |
2612 | return retval; |
2613 | } | |
1da177e4 | 2614 | |
02f1175c | 2615 | info->throttle = 0; |
1da177e4 | 2616 | |
02f1175c | 2617 | #ifdef CY_DEBUG_OPEN |
21719191 | 2618 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
2619 | #endif |
2620 | return 0; | |
2621 | } /* cy_open */ | |
1da177e4 LT |
2622 | |
2623 | /* | |
2624 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
2625 | */ | |
02f1175c | 2626 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 2627 | { |
875b206b | 2628 | struct cyclades_card *card; |
cab9bdd1 | 2629 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2630 | void __iomem *base_addr; |
875b206b | 2631 | int chip, channel, index; |
02f1175c JS |
2632 | unsigned long orig_jiffies; |
2633 | int char_time; | |
2634 | ||
2635 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
2636 | return; | |
2637 | ||
2638 | if (info->xmit_fifo_size == 0) | |
2639 | return; /* Just in case.... */ | |
1da177e4 | 2640 | |
02f1175c JS |
2641 | orig_jiffies = jiffies; |
2642 | /* | |
2643 | * Set the check interval to be 1/5 of the estimated time to | |
2644 | * send a single character, and make it at least 1. The check | |
2645 | * interval should also be less than the timeout. | |
2646 | * | |
2647 | * Note: we have to use pretty tight timings here to satisfy | |
2648 | * the NIST-PCTS. | |
2649 | */ | |
2650 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
2651 | char_time = char_time / 5; | |
2652 | if (char_time <= 0) | |
2653 | char_time = 1; | |
2654 | if (timeout < 0) | |
2655 | timeout = 0; | |
2656 | if (timeout) | |
2657 | char_time = min(char_time, timeout); | |
2658 | /* | |
2659 | * If the transmitter hasn't cleared in twice the approximate | |
2660 | * amount of time to send the entire FIFO, it probably won't | |
2661 | * ever clear. This assumes the UART isn't doing flow | |
2662 | * control, which is currently the case. Hence, if it ever | |
2663 | * takes longer than info->timeout, this is probably due to a | |
2664 | * UART bug of some kind. So, we clamp the timeout parameter at | |
2665 | * 2*info->timeout. | |
2666 | */ | |
2667 | if (!timeout || timeout > 2 * info->timeout) | |
2668 | timeout = 2 * info->timeout; | |
1da177e4 | 2669 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
2670 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
2671 | timeout, char_time, jiffies); | |
1da177e4 | 2672 | #endif |
02f1175c | 2673 | card = info->card; |
875b206b JS |
2674 | channel = (info->line) - (card->first_line); |
2675 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
2676 | chip = channel >> 2; |
2677 | channel &= 0x03; | |
875b206b JS |
2678 | index = card->bus_index; |
2679 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
db05c3b1 | 2680 | while (readb(base_addr + (CySRER << index)) & CyTxRdy) { |
1da177e4 | 2681 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2682 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 2683 | #endif |
02f1175c JS |
2684 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
2685 | break; | |
2686 | if (timeout && time_after(jiffies, orig_jiffies + | |
2687 | timeout)) | |
2688 | break; | |
2689 | } | |
1da177e4 | 2690 | } |
02f1175c JS |
2691 | /* Run one more char cycle */ |
2692 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 | 2693 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2694 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
2695 | #endif |
2696 | } | |
2697 | ||
2698 | /* | |
2699 | * This routine is called when a particular tty device is closed. | |
2700 | */ | |
02f1175c | 2701 | static void cy_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2702 | { |
cab9bdd1 | 2703 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2704 | struct cyclades_card *card; |
02f1175c | 2705 | unsigned long flags; |
1da177e4 LT |
2706 | |
2707 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2708 | printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); |
1da177e4 LT |
2709 | #endif |
2710 | ||
02f1175c JS |
2711 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { |
2712 | return; | |
2713 | } | |
1da177e4 | 2714 | |
9fa1b3b1 JS |
2715 | card = info->card; |
2716 | ||
2717 | spin_lock_irqsave(&card->card_lock, flags); | |
02f1175c JS |
2718 | /* If the TTY is being hung up, nothing to do */ |
2719 | if (tty_hung_up_p(filp)) { | |
9fa1b3b1 | 2720 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2721 | return; |
2722 | } | |
1da177e4 | 2723 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2724 | printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line, |
2725 | info->count); | |
1da177e4 | 2726 | #endif |
02f1175c JS |
2727 | if ((tty->count == 1) && (info->count != 1)) { |
2728 | /* | |
2729 | * Uh, oh. tty->count is 1, which means that the tty | |
2730 | * structure will be freed. Info->count should always | |
2731 | * be one in these conditions. If it's greater than | |
2732 | * one, we've got real problems, since it means the | |
2733 | * serial port won't be shutdown. | |
2734 | */ | |
21719191 JS |
2735 | printk(KERN_ERR "cyc:cy_close: bad serial port count; " |
2736 | "tty->count is 1, info->count is %d\n", info->count); | |
02f1175c JS |
2737 | info->count = 1; |
2738 | } | |
1da177e4 | 2739 | #ifdef CY_DEBUG_COUNT |
21719191 | 2740 | printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n", |
02f1175c | 2741 | current->pid, info->count - 1); |
1da177e4 | 2742 | #endif |
02f1175c | 2743 | if (--info->count < 0) { |
1da177e4 | 2744 | #ifdef CY_DEBUG_COUNT |
21719191 | 2745 | printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n"); |
1da177e4 | 2746 | #endif |
02f1175c | 2747 | info->count = 0; |
1da177e4 | 2748 | } |
02f1175c | 2749 | if (info->count) { |
9fa1b3b1 | 2750 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2751 | return; |
2752 | } | |
2753 | info->flags |= ASYNC_CLOSING; | |
1da177e4 | 2754 | |
02f1175c JS |
2755 | /* |
2756 | * Now we wait for the transmit buffer to clear; and we notify | |
2757 | * the line discipline to only process XON/XOFF characters. | |
2758 | */ | |
2759 | tty->closing = 1; | |
9fa1b3b1 | 2760 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2761 | if (info->closing_wait != CY_CLOSING_WAIT_NONE) { |
2762 | tty_wait_until_sent(tty, info->closing_wait); | |
1da177e4 | 2763 | } |
9fa1b3b1 | 2764 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2765 | |
9fa1b3b1 JS |
2766 | if (!IS_CYC_Z(*card)) { |
2767 | int channel = info->line - card->first_line; | |
2768 | int index = card->bus_index; | |
2769 | void __iomem *base_addr = card->base_addr + | |
02f1175c JS |
2770 | (cy_chip_offset[channel >> 2] << index); |
2771 | /* Stop accepting input */ | |
2772 | channel &= 0x03; | |
2773 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
2774 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2775 | readb(base_addr + (CySRER << index)) & ~CyRxData); |
02f1175c JS |
2776 | if (info->flags & ASYNC_INITIALIZED) { |
2777 | /* Waiting for on-board buffers to be empty before closing | |
2778 | the port */ | |
9fa1b3b1 | 2779 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2780 | cy_wait_until_sent(tty, info->timeout); |
9fa1b3b1 | 2781 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2782 | } |
2783 | } else { | |
2784 | #ifdef Z_WAKE | |
2785 | /* Waiting for on-board buffers to be empty before closing the port */ | |
9fa1b3b1 | 2786 | void __iomem *base_addr = card->base_addr; |
02f1175c JS |
2787 | struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; |
2788 | struct ZFW_CTRL __iomem *zfw_ctrl = | |
db05c3b1 | 2789 | base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 2790 | struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; |
9fa1b3b1 | 2791 | int channel = info->line - card->first_line; |
02f1175c JS |
2792 | int retval; |
2793 | ||
db05c3b1 | 2794 | if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 2795 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 2796 | if (retval != 0) { |
21719191 JS |
2797 | printk(KERN_DEBUG "cyc:cy_close retval on " |
2798 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 2799 | } |
9fa1b3b1 | 2800 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 2801 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 2802 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2803 | } |
1da177e4 | 2804 | #endif |
02f1175c JS |
2805 | } |
2806 | ||
9fa1b3b1 | 2807 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2808 | shutdown(info); |
2809 | if (tty->driver->flush_buffer) | |
2810 | tty->driver->flush_buffer(tty); | |
2811 | tty_ldisc_flush(tty); | |
9fa1b3b1 | 2812 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2813 | |
2814 | tty->closing = 0; | |
2815 | info->event = 0; | |
2816 | info->tty = NULL; | |
2817 | if (info->blocked_open) { | |
9fa1b3b1 | 2818 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2819 | if (info->close_delay) { |
2820 | msleep_interruptible(jiffies_to_msecs | |
2821 | (info->close_delay)); | |
2822 | } | |
2823 | wake_up_interruptible(&info->open_wait); | |
9fa1b3b1 | 2824 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2825 | } |
2826 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | |
2827 | wake_up_interruptible(&info->close_wait); | |
1da177e4 LT |
2828 | |
2829 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2830 | printk(KERN_DEBUG "cyc:cy_close done\n"); |
1da177e4 LT |
2831 | #endif |
2832 | ||
9fa1b3b1 | 2833 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2834 | } /* cy_close */ |
1da177e4 LT |
2835 | |
2836 | /* This routine gets called when tty_write has put something into | |
2837 | * the write_queue. The characters may come from user space or | |
2838 | * kernel space. | |
2839 | * | |
2840 | * This routine will return the number of characters actually | |
2841 | * accepted for writing. | |
2842 | * | |
2843 | * If the port is not already transmitting stuff, start it off by | |
2844 | * enabling interrupts. The interrupt service routine will then | |
2845 | * ensure that the characters are sent. | |
2846 | * If the port is already active, there is no need to kick it. | |
2847 | * | |
2848 | */ | |
02f1175c | 2849 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 2850 | { |
cab9bdd1 | 2851 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2852 | unsigned long flags; |
2853 | int c, ret = 0; | |
1da177e4 LT |
2854 | |
2855 | #ifdef CY_DEBUG_IO | |
21719191 | 2856 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
2857 | #endif |
2858 | ||
02f1175c JS |
2859 | if (serial_paranoia_check(info, tty->name, "cy_write")) { |
2860 | return 0; | |
2861 | } | |
1da177e4 | 2862 | |
02f1175c JS |
2863 | if (!info->xmit_buf) |
2864 | return 0; | |
1da177e4 | 2865 | |
9fa1b3b1 | 2866 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c JS |
2867 | while (1) { |
2868 | c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), | |
2869 | (int)(SERIAL_XMIT_SIZE - info->xmit_head))); | |
2870 | ||
2871 | if (c <= 0) | |
2872 | break; | |
2873 | ||
2874 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | |
2875 | info->xmit_head = (info->xmit_head + c) & | |
2876 | (SERIAL_XMIT_SIZE - 1); | |
2877 | info->xmit_cnt += c; | |
2878 | buf += c; | |
2879 | count -= c; | |
2880 | ret += c; | |
2881 | } | |
9fa1b3b1 | 2882 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
2883 | |
2884 | info->idle_stats.xmit_bytes += ret; | |
2885 | info->idle_stats.xmit_idle = jiffies; | |
2886 | ||
2887 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { | |
2888 | start_xmit(info); | |
2889 | } | |
2890 | return ret; | |
2891 | } /* cy_write */ | |
1da177e4 LT |
2892 | |
2893 | /* | |
2894 | * This routine is called by the kernel to write a single | |
2895 | * character to the tty device. If the kernel uses this routine, | |
2896 | * it must call the flush_chars() routine (if defined) when it is | |
2897 | * done stuffing characters into the driver. If there is no room | |
2898 | * in the queue, the character is ignored. | |
2899 | */ | |
02f1175c | 2900 | static void cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 2901 | { |
cab9bdd1 | 2902 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2903 | unsigned long flags; |
1da177e4 LT |
2904 | |
2905 | #ifdef CY_DEBUG_IO | |
21719191 | 2906 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
2907 | #endif |
2908 | ||
02f1175c JS |
2909 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
2910 | return; | |
1da177e4 | 2911 | |
02f1175c JS |
2912 | if (!info->xmit_buf) |
2913 | return; | |
1da177e4 | 2914 | |
9fa1b3b1 | 2915 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 2916 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 2917 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
2918 | return; |
2919 | } | |
1da177e4 | 2920 | |
02f1175c JS |
2921 | info->xmit_buf[info->xmit_head++] = ch; |
2922 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
2923 | info->xmit_cnt++; | |
1da177e4 LT |
2924 | info->idle_stats.xmit_bytes++; |
2925 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 2926 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c | 2927 | } /* cy_put_char */ |
1da177e4 LT |
2928 | |
2929 | /* | |
2930 | * This routine is called by the kernel after it has written a | |
2931 | * series of characters to the tty device using put_char(). | |
2932 | */ | |
02f1175c | 2933 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 2934 | { |
cab9bdd1 | 2935 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2936 | |
1da177e4 | 2937 | #ifdef CY_DEBUG_IO |
21719191 | 2938 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
2939 | #endif |
2940 | ||
02f1175c JS |
2941 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
2942 | return; | |
1da177e4 | 2943 | |
02f1175c JS |
2944 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
2945 | !info->xmit_buf) | |
2946 | return; | |
1da177e4 | 2947 | |
02f1175c JS |
2948 | start_xmit(info); |
2949 | } /* cy_flush_chars */ | |
1da177e4 LT |
2950 | |
2951 | /* | |
2952 | * This routine returns the numbers of characters the tty driver | |
2953 | * will accept for queuing to be written. This number is subject | |
2954 | * to change as output buffers get emptied, or if the output flow | |
2955 | * control is activated. | |
2956 | */ | |
02f1175c | 2957 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 2958 | { |
cab9bdd1 | 2959 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2960 | int ret; |
2961 | ||
1da177e4 | 2962 | #ifdef CY_DEBUG_IO |
21719191 | 2963 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
2964 | #endif |
2965 | ||
02f1175c JS |
2966 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
2967 | return 0; | |
2968 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
2969 | if (ret < 0) | |
2970 | ret = 0; | |
2971 | return ret; | |
2972 | } /* cy_write_room */ | |
1da177e4 | 2973 | |
02f1175c | 2974 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 2975 | { |
875b206b | 2976 | struct cyclades_card *card; |
cab9bdd1 | 2977 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2978 | int channel; |
1da177e4 | 2979 | |
02f1175c JS |
2980 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
2981 | return 0; | |
2982 | ||
2983 | card = info->card; | |
875b206b | 2984 | channel = (info->line) - (card->first_line); |
1da177e4 LT |
2985 | |
2986 | #ifdef Z_EXT_CHARS_IN_BUFFER | |
02f1175c JS |
2987 | if (!IS_CYC_Z(cy_card[card])) { |
2988 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1da177e4 | 2989 | #ifdef CY_DEBUG_IO |
21719191 JS |
2990 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2991 | info->line, info->xmit_cnt); | |
1da177e4 | 2992 | #endif |
02f1175c | 2993 | return info->xmit_cnt; |
1da177e4 | 2994 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 2995 | } else { |
ad39c300 JS |
2996 | static struct FIRM_ID *firm_id; |
2997 | static struct ZFW_CTRL *zfw_ctrl; | |
2998 | static struct CH_CTRL *ch_ctrl; | |
2999 | static struct BUF_CTRL *buf_ctrl; | |
02f1175c | 3000 | int char_count; |
ad39c300 | 3001 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 3002 | |
875b206b JS |
3003 | firm_id = card->base_addr + ID_ADDRESS; |
3004 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 3005 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3006 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
3007 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
3008 | ||
db05c3b1 JS |
3009 | tx_get = readl(&buf_ctrl->tx_get); |
3010 | tx_put = readl(&buf_ctrl->tx_put); | |
3011 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
3012 | if (tx_put >= tx_get) |
3013 | char_count = tx_put - tx_get; | |
3014 | else | |
3015 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 3016 | #ifdef CY_DEBUG_IO |
21719191 JS |
3017 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
3018 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 3019 | #endif |
096dcfce | 3020 | return info->xmit_cnt + char_count; |
02f1175c JS |
3021 | } |
3022 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
3023 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
3024 | |
3025 | /* | |
3026 | * ------------------------------------------------------------ | |
3027 | * cy_ioctl() and friends | |
3028 | * ------------------------------------------------------------ | |
3029 | */ | |
3030 | ||
1a86b5e3 | 3031 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 3032 | { |
02f1175c | 3033 | int co, co_val, bpr; |
1a86b5e3 | 3034 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 3035 | 25000000); |
1da177e4 | 3036 | |
02f1175c JS |
3037 | if (baud == 0) { |
3038 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
3039 | return; | |
3040 | } | |
1da177e4 | 3041 | |
02f1175c JS |
3042 | /* determine which prescaler to use */ |
3043 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
3044 | if (cy_clock / co_val / baud > 63) | |
3045 | break; | |
3046 | } | |
1da177e4 | 3047 | |
02f1175c JS |
3048 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
3049 | if (bpr > 255) | |
3050 | bpr = 255; | |
1da177e4 | 3051 | |
02f1175c JS |
3052 | info->tbpr = info->rbpr = bpr; |
3053 | info->tco = info->rco = co; | |
1da177e4 LT |
3054 | } |
3055 | ||
3056 | /* | |
3057 | * This routine finds or computes the various line characteristics. | |
3058 | * It used to be called config_setup | |
3059 | */ | |
02f1175c | 3060 | static void set_line_char(struct cyclades_port *info) |
1da177e4 | 3061 | { |
875b206b | 3062 | struct cyclades_card *card; |
02f1175c JS |
3063 | unsigned long flags; |
3064 | void __iomem *base_addr; | |
875b206b | 3065 | int chip, channel, index; |
02f1175c JS |
3066 | unsigned cflag, iflag; |
3067 | unsigned short chip_number; | |
3068 | int baud, baud_rate = 0; | |
3069 | int i; | |
3070 | ||
3071 | if (!info->tty || !info->tty->termios) { | |
3072 | return; | |
1da177e4 | 3073 | } |
02f1175c JS |
3074 | if (info->line == -1) { |
3075 | return; | |
1da177e4 | 3076 | } |
02f1175c JS |
3077 | cflag = info->tty->termios->c_cflag; |
3078 | iflag = info->tty->termios->c_iflag; | |
1da177e4 | 3079 | |
02f1175c JS |
3080 | /* |
3081 | * Set up the tty->alt_speed kludge | |
3082 | */ | |
3083 | if (info->tty) { | |
3084 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
3085 | info->tty->alt_speed = 57600; | |
3086 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
3087 | info->tty->alt_speed = 115200; | |
3088 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
3089 | info->tty->alt_speed = 230400; | |
3090 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
3091 | info->tty->alt_speed = 460800; | |
1da177e4 | 3092 | } |
02f1175c JS |
3093 | |
3094 | card = info->card; | |
875b206b | 3095 | channel = info->line - card->first_line; |
02f1175c JS |
3096 | chip_number = channel / 4; |
3097 | ||
875b206b | 3098 | if (!IS_CYC_Z(*card)) { |
02f1175c | 3099 | |
875b206b | 3100 | index = card->bus_index; |
02f1175c JS |
3101 | |
3102 | /* baud rate */ | |
3103 | baud = tty_get_baud_rate(info->tty); | |
3104 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3105 | ASYNC_SPD_CUST) { | |
3106 | if (info->custom_divisor) | |
3107 | baud_rate = info->baud / info->custom_divisor; | |
3108 | else | |
3109 | baud_rate = info->baud; | |
3110 | } else if (baud > CD1400_MAX_SPEED) { | |
3111 | baud = CD1400_MAX_SPEED; | |
3112 | } | |
3113 | /* find the baud index */ | |
3114 | for (i = 0; i < 20; i++) { | |
3115 | if (baud == baud_table[i]) { | |
3116 | break; | |
3117 | } | |
3118 | } | |
3119 | if (i == 20) { | |
3120 | i = 19; /* CD1400_MAX_SPEED */ | |
3121 | } | |
3122 | ||
3123 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3124 | ASYNC_SPD_CUST) { | |
3125 | cyy_baud_calc(info, baud_rate); | |
3126 | } else { | |
3127 | if (info->chip_rev >= CD1400_REV_J) { | |
3128 | /* It is a CD1400 rev. J or later */ | |
3129 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
3130 | info->tco = baud_co_60[i]; /* Tx CO */ | |
3131 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
3132 | info->rco = baud_co_60[i]; /* Rx CO */ | |
3133 | } else { | |
3134 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
3135 | info->tco = baud_co_25[i]; /* Tx CO */ | |
3136 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
3137 | info->rco = baud_co_25[i]; /* Rx CO */ | |
3138 | } | |
3139 | } | |
3140 | if (baud_table[i] == 134) { | |
3141 | /* get it right for 134.5 baud */ | |
3142 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3143 | 2; | |
3144 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3145 | ASYNC_SPD_CUST) { | |
3146 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3147 | baud_rate) + 2; | |
3148 | } else if (baud_table[i]) { | |
3149 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3150 | baud_table[i]) + 2; | |
3151 | /* this needs to be propagated into the card info */ | |
3152 | } else { | |
3153 | info->timeout = 0; | |
3154 | } | |
3155 | /* By tradition (is it a standard?) a baud rate of zero | |
3156 | implies the line should be/has been closed. A bit | |
3157 | later in this routine such a test is performed. */ | |
3158 | ||
3159 | /* byte size and parity */ | |
3160 | info->cor5 = 0; | |
3161 | info->cor4 = 0; | |
3162 | /* receive threshold */ | |
3163 | info->cor3 = (info->default_threshold ? | |
3164 | info->default_threshold : baud_cor3[i]); | |
3165 | info->cor2 = CyETC; | |
3166 | switch (cflag & CSIZE) { | |
3167 | case CS5: | |
3168 | info->cor1 = Cy_5_BITS; | |
3169 | break; | |
3170 | case CS6: | |
3171 | info->cor1 = Cy_6_BITS; | |
3172 | break; | |
3173 | case CS7: | |
3174 | info->cor1 = Cy_7_BITS; | |
3175 | break; | |
3176 | case CS8: | |
3177 | info->cor1 = Cy_8_BITS; | |
3178 | break; | |
3179 | } | |
3180 | if (cflag & CSTOPB) { | |
3181 | info->cor1 |= Cy_2_STOP; | |
3182 | } | |
3183 | if (cflag & PARENB) { | |
3184 | if (cflag & PARODD) { | |
3185 | info->cor1 |= CyPARITY_O; | |
3186 | } else { | |
3187 | info->cor1 |= CyPARITY_E; | |
3188 | } | |
3189 | } else { | |
3190 | info->cor1 |= CyPARITY_NONE; | |
3191 | } | |
3192 | ||
3193 | /* CTS flow control flag */ | |
3194 | if (cflag & CRTSCTS) { | |
3195 | info->flags |= ASYNC_CTS_FLOW; | |
3196 | info->cor2 |= CyCtsAE; | |
3197 | } else { | |
3198 | info->flags &= ~ASYNC_CTS_FLOW; | |
3199 | info->cor2 &= ~CyCtsAE; | |
3200 | } | |
3201 | if (cflag & CLOCAL) | |
3202 | info->flags &= ~ASYNC_CHECK_CD; | |
3203 | else | |
3204 | info->flags |= ASYNC_CHECK_CD; | |
1da177e4 LT |
3205 | |
3206 | /*********************************************** | |
3207 | The hardware option, CyRtsAO, presents RTS when | |
3208 | the chip has characters to send. Since most modems | |
3209 | use RTS as reverse (inbound) flow control, this | |
3210 | option is not used. If inbound flow control is | |
3211 | necessary, DTR can be programmed to provide the | |
3212 | appropriate signals for use with a non-standard | |
3213 | cable. Contact Marcio Saito for details. | |
3214 | ***********************************************/ | |
3215 | ||
02f1175c JS |
3216 | chip = channel >> 2; |
3217 | channel &= 0x03; | |
875b206b | 3218 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 3219 | |
9fa1b3b1 | 3220 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3221 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
3222 | ||
3223 | /* tx and rx baud rate */ | |
3224 | ||
3225 | cy_writeb(base_addr + (CyTCOR << index), info->tco); | |
3226 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); | |
3227 | cy_writeb(base_addr + (CyRCOR << index), info->rco); | |
3228 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); | |
3229 | ||
3230 | /* set line characteristics according configuration */ | |
3231 | ||
3232 | cy_writeb(base_addr + (CySCHR1 << index), | |
3233 | START_CHAR(info->tty)); | |
3234 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->tty)); | |
3235 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); | |
3236 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); | |
3237 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); | |
3238 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); | |
3239 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); | |
3240 | ||
3241 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | | |
3242 | CyCOR3ch, index); | |
3243 | ||
3244 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); /* !!! Is this needed? */ | |
3245 | cy_writeb(base_addr + (CyRTPR << index), | |
3246 | (info->default_timeout ? info->default_timeout : 0x02)); | |
3247 | /* 10ms rx timeout */ | |
3248 | ||
3249 | if (C_CLOCAL(info->tty)) { | |
3250 | /* without modem intr */ | |
3251 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3252 | readb(base_addr + (CySRER << index)) | CyMdmCh); |
02f1175c JS |
3253 | /* act on 1->0 modem transitions */ |
3254 | if ((cflag & CRTSCTS) && info->rflow) { | |
3255 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3256 | (CyCTS | rflow_thr[i])); | |
3257 | } else { | |
3258 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3259 | CyCTS); | |
3260 | } | |
3261 | /* act on 0->1 modem transitions */ | |
3262 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); | |
1da177e4 | 3263 | } else { |
02f1175c JS |
3264 | /* without modem intr */ |
3265 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3266 | readb(base_addr + |
02f1175c JS |
3267 | (CySRER << index)) | CyMdmCh); |
3268 | /* act on 1->0 modem transitions */ | |
3269 | if ((cflag & CRTSCTS) && info->rflow) { | |
3270 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3271 | (CyDSR | CyCTS | CyRI | CyDCD | | |
3272 | rflow_thr[i])); | |
3273 | } else { | |
3274 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3275 | CyDSR | CyCTS | CyRI | CyDCD); | |
3276 | } | |
3277 | /* act on 0->1 modem transitions */ | |
3278 | cy_writeb(base_addr + (CyMCOR2 << index), | |
3279 | CyDSR | CyCTS | CyRI | CyDCD); | |
1da177e4 | 3280 | } |
02f1175c JS |
3281 | |
3282 | if (i == 0) { /* baud rate is zero, turn off line */ | |
3283 | if (info->rtsdtr_inv) { | |
3284 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3285 | ~CyRTS); | |
3286 | } else { | |
3287 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3288 | ~CyDTR); | |
3289 | } | |
1da177e4 | 3290 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3291 | printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n"); |
3292 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3293 | readb(base_addr + (CyMSVR1 << index)), |
3294 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3295 | #endif |
02f1175c JS |
3296 | } else { |
3297 | if (info->rtsdtr_inv) { | |
3298 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3299 | CyRTS); | |
3300 | } else { | |
3301 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3302 | CyDTR); | |
3303 | } | |
1da177e4 | 3304 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3305 | printk(KERN_DEBUG "cyc:set_line_char raising DTR\n"); |
3306 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3307 | readb(base_addr + (CyMSVR1 << index)), |
3308 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3309 | #endif |
02f1175c | 3310 | } |
1da177e4 | 3311 | |
02f1175c JS |
3312 | if (info->tty) { |
3313 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3314 | } | |
9fa1b3b1 | 3315 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 3316 | |
1da177e4 | 3317 | } else { |
02f1175c JS |
3318 | struct FIRM_ID __iomem *firm_id; |
3319 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3320 | struct BOARD_CTRL __iomem *board_ctrl; | |
3321 | struct CH_CTRL __iomem *ch_ctrl; | |
3322 | struct BUF_CTRL __iomem *buf_ctrl; | |
1a86b5e3 | 3323 | __u32 sw_flow; |
02f1175c | 3324 | int retval; |
1da177e4 | 3325 | |
875b206b JS |
3326 | firm_id = card->base_addr + ID_ADDRESS; |
3327 | if (!ISZLOADED(*card)) { | |
02f1175c JS |
3328 | return; |
3329 | } | |
1da177e4 | 3330 | |
875b206b | 3331 | zfw_ctrl = card->base_addr + |
db05c3b1 | 3332 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3333 | board_ctrl = &zfw_ctrl->board_ctrl; |
3334 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); | |
3335 | buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3336 | ||
3337 | /* baud rate */ | |
3338 | baud = tty_get_baud_rate(info->tty); | |
3339 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3340 | ASYNC_SPD_CUST) { | |
3341 | if (info->custom_divisor) | |
3342 | baud_rate = info->baud / info->custom_divisor; | |
3343 | else | |
3344 | baud_rate = info->baud; | |
3345 | } else if (baud > CYZ_MAX_SPEED) { | |
3346 | baud = CYZ_MAX_SPEED; | |
3347 | } | |
3348 | cy_writel(&ch_ctrl->comm_baud, baud); | |
3349 | ||
3350 | if (baud == 134) { | |
3351 | /* get it right for 134.5 baud */ | |
3352 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3353 | 2; | |
3354 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == | |
3355 | ASYNC_SPD_CUST) { | |
3356 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3357 | baud_rate) + 2; | |
3358 | } else if (baud) { | |
3359 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3360 | baud) + 2; | |
3361 | /* this needs to be propagated into the card info */ | |
3362 | } else { | |
3363 | info->timeout = 0; | |
3364 | } | |
1da177e4 | 3365 | |
02f1175c JS |
3366 | /* byte size and parity */ |
3367 | switch (cflag & CSIZE) { | |
3368 | case CS5: | |
3369 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
3370 | break; | |
3371 | case CS6: | |
3372 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
3373 | break; | |
3374 | case CS7: | |
3375 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
3376 | break; | |
3377 | case CS8: | |
3378 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
3379 | break; | |
3380 | } | |
3381 | if (cflag & CSTOPB) { | |
3382 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3383 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
3384 | } else { |
3385 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3386 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
3387 | } |
3388 | if (cflag & PARENB) { | |
3389 | if (cflag & PARODD) { | |
3390 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); | |
3391 | } else { | |
3392 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); | |
3393 | } | |
3394 | } else { | |
3395 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); | |
3396 | } | |
1da177e4 | 3397 | |
02f1175c JS |
3398 | /* CTS flow control flag */ |
3399 | if (cflag & CRTSCTS) { | |
3400 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 3401 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 3402 | } else { |
db05c3b1 JS |
3403 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
3404 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
3405 | } |
3406 | /* As the HW flow control is done in firmware, the driver | |
3407 | doesn't need to care about it */ | |
3408 | info->flags &= ~ASYNC_CTS_FLOW; | |
3409 | ||
3410 | /* XON/XOFF/XANY flow control flags */ | |
3411 | sw_flow = 0; | |
3412 | if (iflag & IXON) { | |
3413 | sw_flow |= C_FL_OXX; | |
3414 | if (iflag & IXANY) | |
3415 | sw_flow |= C_FL_OIXANY; | |
3416 | } | |
3417 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
3418 | ||
875b206b | 3419 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 3420 | if (retval != 0) { |
21719191 JS |
3421 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
3422 | "was %x\n", info->line, retval); | |
02f1175c JS |
3423 | } |
3424 | ||
3425 | /* CD sensitivity */ | |
3426 | if (cflag & CLOCAL) { | |
3427 | info->flags &= ~ASYNC_CHECK_CD; | |
3428 | } else { | |
3429 | info->flags |= ASYNC_CHECK_CD; | |
3430 | } | |
1da177e4 | 3431 | |
02f1175c JS |
3432 | if (baud == 0) { /* baud rate is zero, turn off line */ |
3433 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3434 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 3435 | #ifdef CY_DEBUG_DTR |
21719191 | 3436 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 3437 | #endif |
02f1175c JS |
3438 | } else { |
3439 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3440 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 3441 | #ifdef CY_DEBUG_DTR |
21719191 | 3442 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 3443 | #endif |
02f1175c | 3444 | } |
1da177e4 | 3445 | |
875b206b | 3446 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM,0L); |
02f1175c | 3447 | if (retval != 0) { |
21719191 JS |
3448 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
3449 | "was %x\n", info->line, retval); | |
02f1175c | 3450 | } |
1da177e4 | 3451 | |
02f1175c JS |
3452 | if (info->tty) { |
3453 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
3454 | } | |
1da177e4 | 3455 | } |
02f1175c | 3456 | } /* set_line_char */ |
1da177e4 LT |
3457 | |
3458 | static int | |
02f1175c JS |
3459 | get_serial_info(struct cyclades_port *info, |
3460 | struct serial_struct __user * retinfo) | |
1da177e4 | 3461 | { |
02f1175c | 3462 | struct serial_struct tmp; |
875b206b | 3463 | struct cyclades_card *cinfo = info->card; |
1da177e4 | 3464 | |
02f1175c JS |
3465 | if (!retinfo) |
3466 | return -EFAULT; | |
3467 | memset(&tmp, 0, sizeof(tmp)); | |
3468 | tmp.type = info->type; | |
3469 | tmp.line = info->line; | |
875b206b JS |
3470 | tmp.port = (info->card - cy_card) * 0x100 + info->line - |
3471 | cinfo->first_line; | |
02f1175c JS |
3472 | tmp.irq = cinfo->irq; |
3473 | tmp.flags = info->flags; | |
3474 | tmp.close_delay = info->close_delay; | |
d5dedf99 | 3475 | tmp.closing_wait = info->closing_wait; |
02f1175c JS |
3476 | tmp.baud_base = info->baud; |
3477 | tmp.custom_divisor = info->custom_divisor; | |
3478 | tmp.hub6 = 0; /*!!! */ | |
3479 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
3480 | } /* get_serial_info */ | |
1da177e4 LT |
3481 | |
3482 | static int | |
02f1175c JS |
3483 | set_serial_info(struct cyclades_port *info, |
3484 | struct serial_struct __user * new_info) | |
1da177e4 | 3485 | { |
02f1175c JS |
3486 | struct serial_struct new_serial; |
3487 | struct cyclades_port old_info; | |
3488 | ||
3489 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
3490 | return -EFAULT; | |
3491 | old_info = *info; | |
3492 | ||
3493 | if (!capable(CAP_SYS_ADMIN)) { | |
3494 | if (new_serial.close_delay != info->close_delay || | |
3495 | new_serial.baud_base != info->baud || | |
3496 | (new_serial.flags & ASYNC_FLAGS & | |
3497 | ~ASYNC_USR_MASK) != | |
3498 | (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) | |
3499 | return -EPERM; | |
3500 | info->flags = (info->flags & ~ASYNC_USR_MASK) | | |
3501 | (new_serial.flags & ASYNC_USR_MASK); | |
3502 | info->baud = new_serial.baud_base; | |
3503 | info->custom_divisor = new_serial.custom_divisor; | |
3504 | goto check_and_exit; | |
3505 | } | |
3506 | ||
3507 | /* | |
3508 | * OK, past this point, all the error checking has been done. | |
3509 | * At this point, we start making changes..... | |
3510 | */ | |
3511 | ||
3512 | info->baud = new_serial.baud_base; | |
3513 | info->custom_divisor = new_serial.custom_divisor; | |
3514 | info->flags = (info->flags & ~ASYNC_FLAGS) | | |
3515 | (new_serial.flags & ASYNC_FLAGS); | |
3516 | info->close_delay = new_serial.close_delay * HZ / 100; | |
3517 | info->closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
3518 | |
3519 | check_and_exit: | |
02f1175c JS |
3520 | if (info->flags & ASYNC_INITIALIZED) { |
3521 | set_line_char(info); | |
3522 | return 0; | |
3523 | } else { | |
3524 | return startup(info); | |
3525 | } | |
3526 | } /* set_serial_info */ | |
1da177e4 LT |
3527 | |
3528 | /* | |
3529 | * get_lsr_info - get line status register info | |
3530 | * | |
3531 | * Purpose: Let user call ioctl() to get info when the UART physically | |
3532 | * is emptied. On bus types like RS485, the transmitter must | |
3533 | * release the bus after transmitting. This must be done when | |
3534 | * the transmit shift register is empty, not be done when the | |
3535 | * transmit holding register is empty. This functionality | |
3536 | * allows an RS485 driver to be written in user space. | |
3537 | */ | |
02f1175c | 3538 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user * value) |
1da177e4 | 3539 | { |
875b206b JS |
3540 | struct cyclades_card *card; |
3541 | int chip, channel, index; | |
02f1175c JS |
3542 | unsigned char status; |
3543 | unsigned int result; | |
3544 | unsigned long flags; | |
3545 | void __iomem *base_addr; | |
1da177e4 | 3546 | |
02f1175c | 3547 | card = info->card; |
875b206b JS |
3548 | channel = (info->line) - (card->first_line); |
3549 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3550 | chip = channel >> 2; |
3551 | channel &= 0x03; | |
875b206b JS |
3552 | index = card->bus_index; |
3553 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3554 | |
9fa1b3b1 | 3555 | spin_lock_irqsave(&card->card_lock, flags); |
db05c3b1 | 3556 | status = readb(base_addr + (CySRER << index)) & |
02f1175c | 3557 | (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 3558 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3559 | result = (status ? 0 : TIOCSER_TEMT); |
3560 | } else { | |
3561 | /* Not supported yet */ | |
3562 | return -EINVAL; | |
3563 | } | |
3564 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
3565 | } |
3566 | ||
02f1175c | 3567 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 3568 | { |
cab9bdd1 | 3569 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3570 | struct cyclades_card *card; |
3571 | int chip, channel, index; | |
02f1175c JS |
3572 | void __iomem *base_addr; |
3573 | unsigned long flags; | |
3574 | unsigned char status; | |
3575 | unsigned long lstatus; | |
3576 | unsigned int result; | |
3577 | struct FIRM_ID __iomem *firm_id; | |
3578 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3579 | struct BOARD_CTRL __iomem *board_ctrl; | |
3580 | struct CH_CTRL __iomem *ch_ctrl; | |
3581 | ||
3582 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3583 | return -ENODEV; | |
1da177e4 | 3584 | |
02f1175c | 3585 | card = info->card; |
875b206b JS |
3586 | channel = info->line - card->first_line; |
3587 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3588 | chip = channel >> 2; |
3589 | channel &= 0x03; | |
875b206b JS |
3590 | index = card->bus_index; |
3591 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3592 | |
9fa1b3b1 | 3593 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3594 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
db05c3b1 JS |
3595 | status = readb(base_addr + (CyMSVR1 << index)); |
3596 | status |= readb(base_addr + (CyMSVR2 << index)); | |
9fa1b3b1 | 3597 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3598 | |
3599 | if (info->rtsdtr_inv) { | |
3600 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
3601 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
3602 | } else { | |
3603 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
3604 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
3605 | } | |
3606 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
3607 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
3608 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
3609 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 3610 | } else { |
875b206b JS |
3611 | base_addr = card->base_addr; |
3612 | firm_id = card->base_addr + ID_ADDRESS; | |
3613 | if (ISZLOADED(*card)) { | |
3614 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 3615 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3616 | board_ctrl = &zfw_ctrl->board_ctrl; |
3617 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
db05c3b1 | 3618 | lstatus = readl(&ch_ctrl[channel].rs_status); |
02f1175c JS |
3619 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
3620 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
3621 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
3622 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
3623 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
3624 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
3625 | } else { | |
3626 | result = 0; | |
3627 | return -ENODEV; | |
3628 | } | |
1da177e4 | 3629 | |
02f1175c JS |
3630 | } |
3631 | return result; | |
3632 | } /* cy_tiomget */ | |
1da177e4 LT |
3633 | |
3634 | static int | |
3635 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
02f1175c | 3636 | unsigned int set, unsigned int clear) |
1da177e4 | 3637 | { |
cab9bdd1 | 3638 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3639 | struct cyclades_card *card; |
3640 | int chip, channel, index; | |
02f1175c JS |
3641 | void __iomem *base_addr; |
3642 | unsigned long flags; | |
3643 | struct FIRM_ID __iomem *firm_id; | |
3644 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3645 | struct BOARD_CTRL __iomem *board_ctrl; | |
3646 | struct CH_CTRL __iomem *ch_ctrl; | |
3647 | int retval; | |
3648 | ||
3649 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) | |
3650 | return -ENODEV; | |
3651 | ||
3652 | card = info->card; | |
875b206b JS |
3653 | channel = (info->line) - (card->first_line); |
3654 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3655 | chip = channel >> 2; |
3656 | channel &= 0x03; | |
875b206b JS |
3657 | index = card->bus_index; |
3658 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c JS |
3659 | |
3660 | if (set & TIOCM_RTS) { | |
9fa1b3b1 | 3661 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3662 | cy_writeb(base_addr + (CyCAR << index), |
3663 | (u_char) channel); | |
3664 | if (info->rtsdtr_inv) { | |
3665 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3666 | CyDTR); | |
3667 | } else { | |
3668 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3669 | CyRTS); | |
3670 | } | |
9fa1b3b1 | 3671 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3672 | } |
3673 | if (clear & TIOCM_RTS) { | |
9fa1b3b1 | 3674 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3675 | cy_writeb(base_addr + (CyCAR << index), |
3676 | (u_char) channel); | |
3677 | if (info->rtsdtr_inv) { | |
3678 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3679 | ~CyDTR); | |
3680 | } else { | |
3681 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3682 | ~CyRTS); | |
3683 | } | |
9fa1b3b1 | 3684 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3685 | } |
3686 | if (set & TIOCM_DTR) { | |
9fa1b3b1 | 3687 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3688 | cy_writeb(base_addr + (CyCAR << index), |
3689 | (u_char) channel); | |
3690 | if (info->rtsdtr_inv) { | |
3691 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3692 | CyRTS); | |
3693 | } else { | |
3694 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3695 | CyDTR); | |
3696 | } | |
1da177e4 | 3697 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3698 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); |
3699 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3700 | readb(base_addr + (CyMSVR1 << index)), |
3701 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3702 | #endif |
9fa1b3b1 | 3703 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3704 | } |
3705 | if (clear & TIOCM_DTR) { | |
9fa1b3b1 | 3706 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3707 | cy_writeb(base_addr + (CyCAR << index), |
3708 | (u_char) channel); | |
3709 | if (info->rtsdtr_inv) { | |
3710 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3711 | ~CyRTS); | |
3712 | } else { | |
3713 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3714 | ~CyDTR); | |
3715 | } | |
1da177e4 LT |
3716 | |
3717 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
3718 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); |
3719 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3720 | readb(base_addr + (CyMSVR1 << index)), |
3721 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3722 | #endif |
9fa1b3b1 | 3723 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3724 | } |
3725 | } else { | |
875b206b | 3726 | base_addr = card->base_addr; |
02f1175c | 3727 | |
875b206b JS |
3728 | firm_id = card->base_addr + ID_ADDRESS; |
3729 | if (ISZLOADED(*card)) { | |
3730 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 3731 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3732 | board_ctrl = &zfw_ctrl->board_ctrl; |
3733 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
3734 | ||
3735 | if (set & TIOCM_RTS) { | |
9fa1b3b1 | 3736 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3737 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3738 | readl(&ch_ctrl[channel].rs_control) | |
3739 | C_RS_RTS); | |
9fa1b3b1 | 3740 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3741 | } |
3742 | if (clear & TIOCM_RTS) { | |
9fa1b3b1 | 3743 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3744 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3745 | readl(&ch_ctrl[channel].rs_control) & |
3746 | ~C_RS_RTS); | |
9fa1b3b1 | 3747 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3748 | } |
3749 | if (set & TIOCM_DTR) { | |
9fa1b3b1 | 3750 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3751 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3752 | readl(&ch_ctrl[channel].rs_control) | |
3753 | C_RS_DTR); | |
1da177e4 | 3754 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3755 | printk(KERN_DEBUG "cyc:set_modem_info raising " |
3756 | "Z DTR\n"); | |
1da177e4 | 3757 | #endif |
9fa1b3b1 | 3758 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3759 | } |
3760 | if (clear & TIOCM_DTR) { | |
9fa1b3b1 | 3761 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3762 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3763 | readl(&ch_ctrl[channel].rs_control) & |
3764 | ~C_RS_DTR); | |
1da177e4 | 3765 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3766 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
3767 | "Z DTR\n"); | |
1da177e4 | 3768 | #endif |
9fa1b3b1 | 3769 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3770 | } |
3771 | } else { | |
3772 | return -ENODEV; | |
3773 | } | |
9fa1b3b1 JS |
3774 | spin_lock_irqsave(&card->card_lock, flags); |
3775 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); | |
02f1175c | 3776 | if (retval != 0) { |
21719191 JS |
3777 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
3778 | "was %x\n", info->line, retval); | |
02f1175c | 3779 | } |
9fa1b3b1 | 3780 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 3781 | } |
02f1175c JS |
3782 | return 0; |
3783 | } /* cy_tiocmset */ | |
1da177e4 LT |
3784 | |
3785 | /* | |
3786 | * cy_break() --- routine which turns the break handling on or off | |
3787 | */ | |
02f1175c | 3788 | static void cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 3789 | { |
cab9bdd1 | 3790 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 3791 | struct cyclades_card *card; |
02f1175c | 3792 | unsigned long flags; |
1da177e4 | 3793 | |
02f1175c JS |
3794 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
3795 | return; | |
1da177e4 | 3796 | |
9fa1b3b1 JS |
3797 | card = info->card; |
3798 | ||
3799 | spin_lock_irqsave(&card->card_lock, flags); | |
3800 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3801 | /* Let the transmit ISR take care of this (since it |
3802 | requires stuffing characters into the output stream). | |
3803 | */ | |
3804 | if (break_state == -1) { | |
3805 | if (!info->breakon) { | |
3806 | info->breakon = 1; | |
3807 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 3808 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3809 | start_xmit(info); |
9fa1b3b1 | 3810 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3811 | } |
3812 | } | |
3813 | } else { | |
3814 | if (!info->breakoff) { | |
3815 | info->breakoff = 1; | |
3816 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 3817 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3818 | start_xmit(info); |
9fa1b3b1 | 3819 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3820 | } |
3821 | } | |
1da177e4 | 3822 | } |
1da177e4 | 3823 | } else { |
02f1175c JS |
3824 | int retval; |
3825 | ||
3826 | if (break_state == -1) { | |
9fa1b3b1 JS |
3827 | retval = cyz_issue_cmd(card, |
3828 | info->line - card->first_line, | |
02f1175c JS |
3829 | C_CM_SET_BREAK, 0L); |
3830 | if (retval != 0) { | |
21719191 JS |
3831 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
3832 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
3833 | } |
3834 | } else { | |
9fa1b3b1 JS |
3835 | retval = cyz_issue_cmd(card, |
3836 | info->line - card->first_line, | |
02f1175c JS |
3837 | C_CM_CLR_BREAK, 0L); |
3838 | if (retval != 0) { | |
21719191 JS |
3839 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
3840 | "on ttyC%d was %x\n", info->line, | |
3841 | retval); | |
02f1175c | 3842 | } |
1da177e4 | 3843 | } |
1da177e4 | 3844 | } |
9fa1b3b1 | 3845 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3846 | } /* cy_break */ |
1da177e4 LT |
3847 | |
3848 | static int | |
02f1175c | 3849 | get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) |
1da177e4 LT |
3850 | { |
3851 | ||
02f1175c JS |
3852 | if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) |
3853 | return -EFAULT; | |
3854 | info->mon.int_count = 0; | |
3855 | info->mon.char_count = 0; | |
3856 | info->mon.char_max = 0; | |
3857 | info->mon.char_last = 0; | |
3858 | return 0; | |
3859 | } /* get_mon_info */ | |
1da177e4 | 3860 | |
02f1175c | 3861 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3862 | { |
875b206b | 3863 | struct cyclades_card *card; |
02f1175c | 3864 | void __iomem *base_addr; |
875b206b | 3865 | int channel, chip, index; |
02f1175c | 3866 | unsigned long flags; |
1da177e4 | 3867 | |
02f1175c | 3868 | card = info->card; |
875b206b JS |
3869 | channel = info->line - card->first_line; |
3870 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3871 | chip = channel >> 2; |
3872 | channel &= 0x03; | |
875b206b | 3873 | index = card->bus_index; |
02f1175c | 3874 | base_addr = |
875b206b | 3875 | card->base_addr + (cy_chip_offset[chip] << index); |
02f1175c JS |
3876 | |
3877 | info->cor3 &= ~CyREC_FIFO; | |
3878 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 3879 | |
9fa1b3b1 | 3880 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3881 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
3882 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); | |
9fa1b3b1 | 3883 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3884 | } |
3885 | return 0; | |
3886 | } /* set_threshold */ | |
1da177e4 LT |
3887 | |
3888 | static int | |
02f1175c | 3889 | get_threshold(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3890 | { |
875b206b | 3891 | struct cyclades_card *card; |
02f1175c | 3892 | void __iomem *base_addr; |
875b206b | 3893 | int channel, chip, index; |
02f1175c | 3894 | unsigned long tmp; |
1da177e4 | 3895 | |
02f1175c | 3896 | card = info->card; |
875b206b JS |
3897 | channel = info->line - card->first_line; |
3898 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3899 | chip = channel >> 2; |
3900 | channel &= 0x03; | |
875b206b JS |
3901 | index = card->bus_index; |
3902 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3903 | |
db05c3b1 | 3904 | tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
02f1175c | 3905 | return put_user(tmp, value); |
02f1175c | 3906 | } |
f7429034 | 3907 | return 0; |
02f1175c | 3908 | } /* get_threshold */ |
1da177e4 LT |
3909 | |
3910 | static int | |
02f1175c | 3911 | set_default_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3912 | { |
02f1175c JS |
3913 | info->default_threshold = value & 0x0f; |
3914 | return 0; | |
3915 | } /* set_default_threshold */ | |
1da177e4 LT |
3916 | |
3917 | static int | |
02f1175c | 3918 | get_default_threshold(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3919 | { |
02f1175c JS |
3920 | return put_user(info->default_threshold, value); |
3921 | } /* get_default_threshold */ | |
1da177e4 | 3922 | |
02f1175c | 3923 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3924 | { |
875b206b | 3925 | struct cyclades_card *card; |
02f1175c | 3926 | void __iomem *base_addr; |
875b206b | 3927 | int channel, chip, index; |
02f1175c | 3928 | unsigned long flags; |
1da177e4 | 3929 | |
02f1175c | 3930 | card = info->card; |
875b206b JS |
3931 | channel = info->line - card->first_line; |
3932 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3933 | chip = channel >> 2; |
3934 | channel &= 0x03; | |
875b206b JS |
3935 | index = card->bus_index; |
3936 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3937 | |
9fa1b3b1 | 3938 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3939 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); |
9fa1b3b1 | 3940 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3941 | } |
3942 | return 0; | |
3943 | } /* set_timeout */ | |
1da177e4 | 3944 | |
02f1175c | 3945 | static int get_timeout(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3946 | { |
875b206b | 3947 | struct cyclades_card *card; |
02f1175c | 3948 | void __iomem *base_addr; |
875b206b | 3949 | int channel, chip, index; |
02f1175c | 3950 | unsigned long tmp; |
1da177e4 | 3951 | |
02f1175c | 3952 | card = info->card; |
875b206b JS |
3953 | channel = info->line - card->first_line; |
3954 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
3955 | chip = channel >> 2; |
3956 | channel &= 0x03; | |
875b206b JS |
3957 | index = card->bus_index; |
3958 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3959 | |
db05c3b1 | 3960 | tmp = readb(base_addr + (CyRTPR << index)); |
02f1175c | 3961 | return put_user(tmp, value); |
02f1175c | 3962 | } |
f7429034 | 3963 | return 0; |
02f1175c | 3964 | } /* get_timeout */ |
1da177e4 | 3965 | |
02f1175c | 3966 | static int set_default_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3967 | { |
02f1175c JS |
3968 | info->default_timeout = value & 0xff; |
3969 | return 0; | |
3970 | } /* set_default_timeout */ | |
1da177e4 LT |
3971 | |
3972 | static int | |
02f1175c | 3973 | get_default_timeout(struct cyclades_port *info, unsigned long __user * value) |
1da177e4 | 3974 | { |
02f1175c JS |
3975 | return put_user(info->default_timeout, value); |
3976 | } /* get_default_timeout */ | |
1da177e4 LT |
3977 | |
3978 | /* | |
3979 | * This routine allows the tty driver to implement device- | |
3980 | * specific ioctl's. If the ioctl number passed in cmd is | |
3981 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
3982 | */ | |
3983 | static int | |
02f1175c JS |
3984 | cy_ioctl(struct tty_struct *tty, struct file *file, |
3985 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 3986 | { |
cab9bdd1 | 3987 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
3988 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ |
3989 | struct serial_icounter_struct __user *p_cuser; /* user space */ | |
3990 | int ret_val = 0; | |
3991 | unsigned long flags; | |
3992 | void __user *argp = (void __user *)arg; | |
3993 | ||
3994 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
3995 | return -ENODEV; | |
1da177e4 LT |
3996 | |
3997 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
3998 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
3999 | info->line, cmd, arg); | |
1da177e4 LT |
4000 | #endif |
4001 | ||
02f1175c JS |
4002 | switch (cmd) { |
4003 | case CYGETMON: | |
4004 | ret_val = get_mon_info(info, argp); | |
4005 | break; | |
4006 | case CYGETTHRESH: | |
4007 | ret_val = get_threshold(info, argp); | |
4008 | break; | |
4009 | case CYSETTHRESH: | |
4010 | ret_val = set_threshold(info, arg); | |
4011 | break; | |
4012 | case CYGETDEFTHRESH: | |
4013 | ret_val = get_default_threshold(info, argp); | |
4014 | break; | |
4015 | case CYSETDEFTHRESH: | |
4016 | ret_val = set_default_threshold(info, arg); | |
4017 | break; | |
4018 | case CYGETTIMEOUT: | |
4019 | ret_val = get_timeout(info, argp); | |
4020 | break; | |
4021 | case CYSETTIMEOUT: | |
4022 | ret_val = set_timeout(info, arg); | |
4023 | break; | |
4024 | case CYGETDEFTIMEOUT: | |
4025 | ret_val = get_default_timeout(info, argp); | |
4026 | break; | |
4027 | case CYSETDEFTIMEOUT: | |
4028 | ret_val = set_default_timeout(info, arg); | |
4029 | break; | |
1da177e4 | 4030 | case CYSETRFLOW: |
02f1175c JS |
4031 | info->rflow = (int)arg; |
4032 | ret_val = 0; | |
4033 | break; | |
1da177e4 | 4034 | case CYGETRFLOW: |
02f1175c JS |
4035 | ret_val = info->rflow; |
4036 | break; | |
1da177e4 | 4037 | case CYSETRTSDTR_INV: |
02f1175c JS |
4038 | info->rtsdtr_inv = (int)arg; |
4039 | ret_val = 0; | |
4040 | break; | |
1da177e4 | 4041 | case CYGETRTSDTR_INV: |
02f1175c JS |
4042 | ret_val = info->rtsdtr_inv; |
4043 | break; | |
1da177e4 | 4044 | case CYGETCD1400VER: |
02f1175c JS |
4045 | ret_val = info->chip_rev; |
4046 | break; | |
1da177e4 LT |
4047 | #ifndef CONFIG_CYZ_INTR |
4048 | case CYZSETPOLLCYCLE: | |
02f1175c JS |
4049 | cyz_polling_cycle = (arg * HZ) / 1000; |
4050 | ret_val = 0; | |
4051 | break; | |
1da177e4 | 4052 | case CYZGETPOLLCYCLE: |
02f1175c JS |
4053 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
4054 | break; | |
4055 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 4056 | case CYSETWAIT: |
02f1175c JS |
4057 | info->closing_wait = (unsigned short)arg *HZ / 100; |
4058 | ret_val = 0; | |
4059 | break; | |
1da177e4 | 4060 | case CYGETWAIT: |
02f1175c JS |
4061 | ret_val = info->closing_wait / (HZ / 100); |
4062 | break; | |
4063 | case TIOCGSERIAL: | |
4064 | ret_val = get_serial_info(info, argp); | |
4065 | break; | |
4066 | case TIOCSSERIAL: | |
4067 | ret_val = set_serial_info(info, argp); | |
4068 | break; | |
4069 | case TIOCSERGETLSR: /* Get line status register */ | |
4070 | ret_val = get_lsr_info(info, argp); | |
4071 | break; | |
4072 | /* | |
4073 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
4074 | * - mask passed in arg for lines of interest | |
4075 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
4076 | * Caller should use TIOCGICOUNT to see which one it was | |
4077 | */ | |
1da177e4 | 4078 | case TIOCMIWAIT: |
9fa1b3b1 | 4079 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 4080 | /* note the counters on entry */ |
2c7fea99 | 4081 | cnow = info->icount; |
9fa1b3b1 | 4082 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
2c7fea99 JS |
4083 | ret_val = wait_event_interruptible(info->delta_msr_wait, ({ |
4084 | cprev = cnow; | |
9fa1b3b1 | 4085 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 4086 | cnow = info->icount; /* atomic copy */ |
9fa1b3b1 | 4087 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c | 4088 | |
2c7fea99 JS |
4089 | ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
4090 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
4091 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4092 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)); | |
4093 | })); | |
4094 | break; | |
1da177e4 | 4095 | |
02f1175c JS |
4096 | /* |
4097 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
4098 | * Return: write counters to the user passed counter struct | |
4099 | * NB: both 1->0 and 0->1 transitions are counted except for | |
4100 | * RI where only 0->1 is counted. | |
4101 | */ | |
1da177e4 | 4102 | case TIOCGICOUNT: |
9fa1b3b1 | 4103 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 4104 | cnow = info->icount; |
9fa1b3b1 | 4105 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
4106 | p_cuser = argp; |
4107 | ret_val = put_user(cnow.cts, &p_cuser->cts); | |
4108 | if (ret_val) | |
4109 | return ret_val; | |
4110 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); | |
4111 | if (ret_val) | |
4112 | return ret_val; | |
4113 | ret_val = put_user(cnow.rng, &p_cuser->rng); | |
4114 | if (ret_val) | |
4115 | return ret_val; | |
4116 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); | |
4117 | if (ret_val) | |
4118 | return ret_val; | |
4119 | ret_val = put_user(cnow.rx, &p_cuser->rx); | |
4120 | if (ret_val) | |
4121 | return ret_val; | |
4122 | ret_val = put_user(cnow.tx, &p_cuser->tx); | |
4123 | if (ret_val) | |
4124 | return ret_val; | |
4125 | ret_val = put_user(cnow.frame, &p_cuser->frame); | |
4126 | if (ret_val) | |
4127 | return ret_val; | |
4128 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); | |
4129 | if (ret_val) | |
4130 | return ret_val; | |
4131 | ret_val = put_user(cnow.parity, &p_cuser->parity); | |
4132 | if (ret_val) | |
4133 | return ret_val; | |
4134 | ret_val = put_user(cnow.brk, &p_cuser->brk); | |
4135 | if (ret_val) | |
4136 | return ret_val; | |
4137 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); | |
4138 | if (ret_val) | |
4139 | return ret_val; | |
4140 | ret_val = 0; | |
4141 | break; | |
4142 | default: | |
4143 | ret_val = -ENOIOCTLCMD; | |
4144 | } | |
1da177e4 LT |
4145 | |
4146 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4147 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 LT |
4148 | #endif |
4149 | ||
02f1175c JS |
4150 | return ret_val; |
4151 | } /* cy_ioctl */ | |
1da177e4 LT |
4152 | |
4153 | /* | |
4154 | * This routine allows the tty driver to be notified when | |
4155 | * device's termios settings have changed. Note that a | |
4156 | * well-designed tty driver should be prepared to accept the case | |
4157 | * where old == NULL, and try to do something rational. | |
4158 | */ | |
02f1175c | 4159 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 4160 | { |
cab9bdd1 | 4161 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
4162 | |
4163 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4164 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
4165 | #endif |
4166 | ||
02f1175c JS |
4167 | set_line_char(info); |
4168 | ||
4169 | if ((old_termios->c_cflag & CRTSCTS) && | |
4170 | !(tty->termios->c_cflag & CRTSCTS)) { | |
4171 | tty->hw_stopped = 0; | |
4172 | cy_start(tty); | |
4173 | } | |
1da177e4 | 4174 | #if 0 |
02f1175c JS |
4175 | /* |
4176 | * No need to wake up processes in open wait, since they | |
4177 | * sample the CLOCAL flag once, and don't recheck it. | |
4178 | * XXX It's not clear whether the current behavior is correct | |
4179 | * or not. Hence, this may change..... | |
4180 | */ | |
4181 | if (!(old_termios->c_cflag & CLOCAL) && | |
4182 | (tty->termios->c_cflag & CLOCAL)) | |
4183 | wake_up_interruptible(&info->open_wait); | |
1da177e4 | 4184 | #endif |
02f1175c | 4185 | } /* cy_set_termios */ |
1da177e4 LT |
4186 | |
4187 | /* This function is used to send a high-priority XON/XOFF character to | |
4188 | the device. | |
4189 | */ | |
02f1175c | 4190 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 4191 | { |
cab9bdd1 | 4192 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
4193 | struct cyclades_card *card; |
4194 | int channel; | |
1da177e4 | 4195 | |
02f1175c | 4196 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
4197 | return; |
4198 | ||
02f1175c | 4199 | info->x_char = ch; |
1da177e4 LT |
4200 | |
4201 | if (ch) | |
02f1175c | 4202 | cy_start(tty); |
1da177e4 LT |
4203 | |
4204 | card = info->card; | |
875b206b | 4205 | channel = info->line - card->first_line; |
1da177e4 | 4206 | |
875b206b | 4207 | if (IS_CYC_Z(*card)) { |
02f1175c | 4208 | if (ch == STOP_CHAR(tty)) |
875b206b | 4209 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 4210 | else if (ch == START_CHAR(tty)) |
875b206b | 4211 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
4212 | } |
4213 | } | |
4214 | ||
4215 | /* This routine is called by the upper-layer tty layer to signal | |
4216 | that incoming characters should be throttled because the input | |
4217 | buffers are close to full. | |
4218 | */ | |
02f1175c | 4219 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 4220 | { |
cab9bdd1 | 4221 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4222 | struct cyclades_card *card; |
02f1175c JS |
4223 | unsigned long flags; |
4224 | void __iomem *base_addr; | |
875b206b | 4225 | int chip, channel, index; |
1da177e4 LT |
4226 | |
4227 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 4228 | char buf[64]; |
1da177e4 | 4229 | |
21719191 | 4230 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 4231 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
4232 | #endif |
4233 | ||
02f1175c JS |
4234 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) { |
4235 | return; | |
4236 | } | |
4237 | ||
4238 | card = info->card; | |
4239 | ||
4240 | if (I_IXOFF(tty)) { | |
875b206b | 4241 | if (!IS_CYC_Z(*card)) |
02f1175c JS |
4242 | cy_send_xchar(tty, STOP_CHAR(tty)); |
4243 | else | |
4244 | info->throttle = 1; | |
4245 | } | |
1da177e4 | 4246 | |
02f1175c | 4247 | if (tty->termios->c_cflag & CRTSCTS) { |
875b206b JS |
4248 | channel = info->line - card->first_line; |
4249 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
4250 | chip = channel >> 2; |
4251 | channel &= 0x03; | |
875b206b JS |
4252 | index = card->bus_index; |
4253 | base_addr = card->base_addr + | |
02f1175c JS |
4254 | (cy_chip_offset[chip] << index); |
4255 | ||
9fa1b3b1 | 4256 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
4257 | cy_writeb(base_addr + (CyCAR << index), |
4258 | (u_char) channel); | |
4259 | if (info->rtsdtr_inv) { | |
4260 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4261 | ~CyDTR); | |
4262 | } else { | |
4263 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4264 | ~CyRTS); | |
4265 | } | |
9fa1b3b1 | 4266 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4267 | } else { |
4268 | info->throttle = 1; | |
4269 | } | |
4270 | } | |
02f1175c | 4271 | } /* cy_throttle */ |
1da177e4 LT |
4272 | |
4273 | /* | |
4274 | * This routine notifies the tty driver that it should signal | |
4275 | * that characters can now be sent to the tty without fear of | |
4276 | * overrunning the input buffers of the line disciplines. | |
4277 | */ | |
02f1175c | 4278 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 4279 | { |
cab9bdd1 | 4280 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4281 | struct cyclades_card *card; |
02f1175c JS |
4282 | unsigned long flags; |
4283 | void __iomem *base_addr; | |
875b206b | 4284 | int chip, channel, index; |
1da177e4 LT |
4285 | |
4286 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
4287 | char buf[64]; |
4288 | ||
21719191 JS |
4289 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
4290 | tty_name(tty, buf), tty->ldisc.chars_in_buffer(tty),info->line); | |
1da177e4 LT |
4291 | #endif |
4292 | ||
02f1175c JS |
4293 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) { |
4294 | return; | |
4295 | } | |
1da177e4 | 4296 | |
02f1175c JS |
4297 | if (I_IXOFF(tty)) { |
4298 | if (info->x_char) | |
4299 | info->x_char = 0; | |
4300 | else | |
4301 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 4302 | } |
1da177e4 | 4303 | |
02f1175c JS |
4304 | if (tty->termios->c_cflag & CRTSCTS) { |
4305 | card = info->card; | |
875b206b JS |
4306 | channel = info->line - card->first_line; |
4307 | if (!IS_CYC_Z(*card)) { | |
02f1175c JS |
4308 | chip = channel >> 2; |
4309 | channel &= 0x03; | |
875b206b JS |
4310 | index = card->bus_index; |
4311 | base_addr = card->base_addr + | |
02f1175c JS |
4312 | (cy_chip_offset[chip] << index); |
4313 | ||
9fa1b3b1 | 4314 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
4315 | cy_writeb(base_addr + (CyCAR << index), |
4316 | (u_char) channel); | |
4317 | if (info->rtsdtr_inv) { | |
4318 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4319 | CyDTR); | |
4320 | } else { | |
4321 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4322 | CyRTS); | |
4323 | } | |
9fa1b3b1 | 4324 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4325 | } else { |
4326 | info->throttle = 0; | |
4327 | } | |
4328 | } | |
02f1175c | 4329 | } /* cy_unthrottle */ |
1da177e4 LT |
4330 | |
4331 | /* cy_start and cy_stop provide software output flow control as a | |
4332 | function of XON/XOFF, software CTS, and other such stuff. | |
4333 | */ | |
02f1175c | 4334 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 4335 | { |
02f1175c | 4336 | struct cyclades_card *cinfo; |
cab9bdd1 | 4337 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4338 | void __iomem *base_addr; |
4339 | int chip, channel, index; | |
4340 | unsigned long flags; | |
1da177e4 LT |
4341 | |
4342 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4343 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
4344 | #endif |
4345 | ||
02f1175c JS |
4346 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
4347 | return; | |
1da177e4 | 4348 | |
875b206b | 4349 | cinfo = info->card; |
02f1175c JS |
4350 | channel = info->line - cinfo->first_line; |
4351 | if (!IS_CYC_Z(*cinfo)) { | |
4352 | index = cinfo->bus_index; | |
4353 | chip = channel >> 2; | |
4354 | channel &= 0x03; | |
9fa1b3b1 | 4355 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 4356 | |
9fa1b3b1 | 4357 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
4358 | cy_writeb(base_addr + (CyCAR << index), |
4359 | (u_char)(channel & 0x0003)); /* index channel */ | |
4360 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 4361 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
9fa1b3b1 | 4362 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 4363 | } |
02f1175c | 4364 | } /* cy_stop */ |
1da177e4 | 4365 | |
02f1175c | 4366 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 4367 | { |
02f1175c | 4368 | struct cyclades_card *cinfo; |
cab9bdd1 | 4369 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4370 | void __iomem *base_addr; |
4371 | int chip, channel, index; | |
4372 | unsigned long flags; | |
1da177e4 LT |
4373 | |
4374 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4375 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
4376 | #endif |
4377 | ||
02f1175c JS |
4378 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
4379 | return; | |
1da177e4 | 4380 | |
875b206b | 4381 | cinfo = info->card; |
02f1175c JS |
4382 | channel = info->line - cinfo->first_line; |
4383 | index = cinfo->bus_index; | |
4384 | if (!IS_CYC_Z(*cinfo)) { | |
4385 | chip = channel >> 2; | |
4386 | channel &= 0x03; | |
9fa1b3b1 | 4387 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 4388 | |
9fa1b3b1 | 4389 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
4390 | cy_writeb(base_addr + (CyCAR << index), (u_char) (channel & 0x0003)); /* index channel */ |
4391 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 4392 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 4393 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 4394 | } |
02f1175c | 4395 | } /* cy_start */ |
1da177e4 | 4396 | |
02f1175c | 4397 | static void cy_flush_buffer(struct tty_struct *tty) |
1da177e4 | 4398 | { |
cab9bdd1 | 4399 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
4400 | struct cyclades_card *card; |
4401 | int channel, retval; | |
02f1175c JS |
4402 | unsigned long flags; |
4403 | ||
1da177e4 | 4404 | #ifdef CY_DEBUG_IO |
21719191 | 4405 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); |
1da177e4 LT |
4406 | #endif |
4407 | ||
02f1175c JS |
4408 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) |
4409 | return; | |
1da177e4 | 4410 | |
02f1175c | 4411 | card = info->card; |
875b206b | 4412 | channel = info->line - card->first_line; |
1da177e4 | 4413 | |
9fa1b3b1 | 4414 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 4415 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
9fa1b3b1 | 4416 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 4417 | |
875b206b | 4418 | if (IS_CYC_Z(*card)) { /* If it is a Z card, flush the on-board |
02f1175c | 4419 | buffers as well */ |
9fa1b3b1 | 4420 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 4421 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); |
02f1175c | 4422 | if (retval != 0) { |
21719191 JS |
4423 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " |
4424 | "was %x\n", info->line, retval); | |
02f1175c | 4425 | } |
9fa1b3b1 | 4426 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4427 | } |
4428 | tty_wakeup(tty); | |
02f1175c | 4429 | } /* cy_flush_buffer */ |
1da177e4 LT |
4430 | |
4431 | /* | |
4432 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
4433 | */ | |
02f1175c | 4434 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 4435 | { |
cab9bdd1 | 4436 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 4437 | |
1da177e4 | 4438 | #ifdef CY_DEBUG_OTHER |
21719191 | 4439 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
4440 | #endif |
4441 | ||
02f1175c JS |
4442 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
4443 | return; | |
1da177e4 | 4444 | |
02f1175c JS |
4445 | cy_flush_buffer(tty); |
4446 | shutdown(info); | |
4447 | info->event = 0; | |
4448 | info->count = 0; | |
1da177e4 | 4449 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
4450 | printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n", |
4451 | current->pid); | |
1da177e4 | 4452 | #endif |
02f1175c JS |
4453 | info->tty = NULL; |
4454 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
4455 | wake_up_interruptible(&info->open_wait); | |
4456 | } /* cy_hangup */ | |
1da177e4 LT |
4457 | |
4458 | /* | |
4459 | * --------------------------------------------------------------------- | |
4460 | * cy_init() and friends | |
4461 | * | |
4462 | * cy_init() is called at boot-time to initialize the serial driver. | |
4463 | * --------------------------------------------------------------------- | |
4464 | */ | |
4465 | ||
dd025c0c | 4466 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
4467 | { |
4468 | struct cyclades_port *info; | |
a6343afb | 4469 | u32 uninitialized_var(mailbox); |
0809e267 JS |
4470 | unsigned int nports; |
4471 | unsigned short chip_number; | |
a6343afb | 4472 | int uninitialized_var(index), port; |
0809e267 | 4473 | |
3046d50e JS |
4474 | spin_lock_init(&cinfo->card_lock); |
4475 | ||
c2ad4c75 | 4476 | if (IS_CYC_Z(*cinfo)) { /* Cyclades-Z */ |
0809e267 JS |
4477 | mailbox = readl(&((struct RUNTIME_9060 __iomem *) |
4478 | cinfo->ctl_addr)->mail_box_0); | |
4479 | nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8; | |
4480 | cinfo->intr_enabled = 0; | |
4481 | cinfo->nports = 0; /* Will be correctly set later, after | |
4482 | Z FW is loaded */ | |
3046d50e JS |
4483 | } else { |
4484 | index = cinfo->bus_index; | |
4485 | nports = cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips; | |
4486 | } | |
4487 | ||
dd025c0c JS |
4488 | cinfo->ports = kzalloc(sizeof(*cinfo->ports) * nports, GFP_KERNEL); |
4489 | if (cinfo->ports == NULL) { | |
4490 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3137553d | 4491 | cinfo->nports = 0; |
dd025c0c JS |
4492 | return -ENOMEM; |
4493 | } | |
4494 | ||
3046d50e JS |
4495 | for (port = cinfo->first_line; port < cinfo->first_line + nports; |
4496 | port++) { | |
dd025c0c | 4497 | info = &cinfo->ports[port - cinfo->first_line]; |
3046d50e | 4498 | info->magic = CYCLADES_MAGIC; |
875b206b | 4499 | info->card = cinfo; |
3046d50e JS |
4500 | info->line = port; |
4501 | info->flags = STD_COM_FLAGS; | |
4502 | info->closing_wait = CLOSING_WAIT_DELAY; | |
4503 | info->close_delay = 5 * HZ / 10; | |
4504 | ||
4505 | INIT_WORK(&info->tqueue, do_softint); | |
4506 | init_waitqueue_head(&info->open_wait); | |
4507 | init_waitqueue_head(&info->close_wait); | |
2c7fea99 | 4508 | init_completion(&info->shutdown_wait); |
3046d50e JS |
4509 | init_waitqueue_head(&info->delta_msr_wait); |
4510 | ||
4511 | if (IS_CYC_Z(*cinfo)) { | |
0809e267 | 4512 | info->type = PORT_STARTECH; |
0809e267 JS |
4513 | if (mailbox == ZO_V1) |
4514 | info->xmit_fifo_size = CYZ_FIFO_SIZE; | |
4515 | else | |
3046d50e | 4516 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 4517 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
4518 | setup_timer(&cyz_rx_full_timer[port], |
4519 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 4520 | #endif |
3046d50e | 4521 | } else { |
0809e267 | 4522 | info->type = PORT_CIRRUS; |
0809e267 | 4523 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 4524 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
4525 | info->cor2 = CyETC; |
4526 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 4527 | |
0809e267 | 4528 | chip_number = (port - cinfo->first_line) / 4; |
3046d50e | 4529 | if ((info->chip_rev = readb(cinfo->base_addr + |
0809e267 JS |
4530 | (cy_chip_offset[chip_number] << |
4531 | index) + (CyGFRCR << index))) >= | |
4532 | CD1400_REV_J) { | |
4533 | /* It is a CD1400 rev. J or later */ | |
4534 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
4535 | info->tco = baud_co_60[13]; /* Tx CO */ | |
4536 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
4537 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
4538 | info->rtsdtr_inv = 1; |
4539 | } else { | |
4540 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
4541 | info->tco = baud_co_25[13]; /* Tx CO */ | |
4542 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
4543 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
4544 | info->rtsdtr_inv = 0; |
4545 | } | |
3046d50e JS |
4546 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
4547 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 4548 | } |
3046d50e | 4549 | |
0809e267 | 4550 | } |
3046d50e JS |
4551 | |
4552 | #ifndef CONFIG_CYZ_INTR | |
4553 | if (IS_CYC_Z(*cinfo) && !timer_pending(&cyz_timerlist)) { | |
4554 | mod_timer(&cyz_timerlist, jiffies + 1); | |
4555 | #ifdef CY_PCI_DEBUG | |
4556 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
4557 | #endif | |
4558 | } | |
4559 | #endif | |
dd025c0c | 4560 | return 0; |
0809e267 JS |
4561 | } |
4562 | ||
1da177e4 LT |
4563 | /* initialize chips on Cyclom-Y card -- return number of valid |
4564 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
4565 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
4566 | int index) | |
1da177e4 | 4567 | { |
02f1175c JS |
4568 | unsigned int chip_number; |
4569 | void __iomem *base_addr; | |
4570 | ||
4571 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
4572 | /* Cy_HwReset is 0x1400 */ | |
4573 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
4574 | /* Cy_ClrIntr is 0x1800 */ | |
4575 | udelay(500L); | |
4576 | ||
4577 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; chip_number++) { | |
4578 | base_addr = | |
4579 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
4580 | mdelay(1); | |
db05c3b1 | 4581 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
4582 | /************* |
4583 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
4584 | chip_number, (unsigned long)base_addr); | |
4585 | *************/ | |
4586 | return chip_number; | |
4587 | } | |
4588 | ||
4589 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
4590 | udelay(10L); | |
4591 | ||
4592 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
4593 | cannot distinguish between references to chip 0 and a non- | |
4594 | existent chip 4. If the preceding clearing of the supposed | |
4595 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
4596 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
4597 | */ | |
db05c3b1 | 4598 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
4599 | (cy_chip_offset[0] << index) + |
4600 | (CyGFRCR << index)) == 0) { | |
4601 | return chip_number; | |
4602 | } | |
4603 | ||
4604 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
4605 | mdelay(1); | |
4606 | ||
db05c3b1 | 4607 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
4608 | /* |
4609 | printk(" chip #%d at %#6lx is not responding ", | |
4610 | chip_number, (unsigned long)base_addr); | |
4611 | printk("(GFRCR stayed 0)\n", | |
4612 | */ | |
4613 | return chip_number; | |
4614 | } | |
db05c3b1 | 4615 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
4616 | 0x40) { |
4617 | /* | |
4618 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
4619 | "%#2x)\n", | |
4620 | chip_number, (unsigned long)base_addr, | |
4621 | base_addr[CyGFRCR<<index]); | |
4622 | */ | |
4623 | return chip_number; | |
4624 | } | |
4625 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 4626 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
4627 | /* It is a CD1400 rev. J or later */ |
4628 | /* Impossible to reach 5ms with this chip. | |
4629 | Changed to 2ms instead (f = 500 Hz). */ | |
4630 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
4631 | } else { | |
4632 | /* f = 200 Hz */ | |
4633 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
4634 | } | |
1da177e4 | 4635 | |
02f1175c JS |
4636 | /* |
4637 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
4638 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 4639 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
4640 | */ |
4641 | } | |
4642 | return chip_number; | |
4643 | } /* cyy_init_card */ | |
1da177e4 LT |
4644 | |
4645 | /* | |
4646 | * --------------------------------------------------------------------- | |
4647 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
4648 | * sets global variables and return the number of ISA boards found. | |
4649 | * --------------------------------------------------------------------- | |
4650 | */ | |
02f1175c | 4651 | static int __init cy_detect_isa(void) |
1da177e4 LT |
4652 | { |
4653 | #ifdef CONFIG_ISA | |
02f1175c JS |
4654 | unsigned short cy_isa_irq, nboard; |
4655 | void __iomem *cy_isa_address; | |
4656 | unsigned short i, j, cy_isa_nchan; | |
1da177e4 | 4657 | #ifdef MODULE |
02f1175c | 4658 | int isparam = 0; |
1da177e4 LT |
4659 | #endif |
4660 | ||
02f1175c | 4661 | nboard = 0; |
1da177e4 LT |
4662 | |
4663 | #ifdef MODULE | |
4664 | /* Check for module parameters */ | |
02f1175c JS |
4665 | for (i = 0; i < NR_CARDS; i++) { |
4666 | if (maddr[i] || i) { | |
4667 | isparam = 1; | |
4668 | cy_isa_addresses[i] = maddr[i]; | |
4669 | } | |
4670 | if (!maddr[i]) | |
4671 | break; | |
1da177e4 LT |
4672 | } |
4673 | #endif | |
4674 | ||
02f1175c JS |
4675 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
4676 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
4677 | unsigned int isa_address = cy_isa_addresses[i]; | |
4678 | if (isa_address == 0x0000) { | |
096dcfce | 4679 | return nboard; |
02f1175c | 4680 | } |
1da177e4 | 4681 | |
02f1175c | 4682 | /* probe for CD1400... */ |
1da177e4 | 4683 | cy_isa_address = ioremap(isa_address, CyISA_Ywin); |
3137553d JS |
4684 | if (cy_isa_address == NULL) { |
4685 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
4686 | "address\n"); | |
4687 | continue; | |
4688 | } | |
02f1175c JS |
4689 | cy_isa_nchan = CyPORTS_PER_CHIP * |
4690 | cyy_init_card(cy_isa_address, 0); | |
4691 | if (cy_isa_nchan == 0) { | |
3137553d | 4692 | iounmap(cy_isa_address); |
02f1175c JS |
4693 | continue; |
4694 | } | |
1da177e4 LT |
4695 | #ifdef MODULE |
4696 | if (isparam && irq[i]) | |
02f1175c | 4697 | cy_isa_irq = irq[i]; |
1da177e4 LT |
4698 | else |
4699 | #endif | |
02f1175c JS |
4700 | /* find out the board's irq by probing */ |
4701 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
4702 | if (cy_isa_irq == 0) { | |
21719191 JS |
4703 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
4704 | "IRQ could not be detected.\n", | |
02f1175c | 4705 | (unsigned long)cy_isa_address); |
3137553d | 4706 | iounmap(cy_isa_address); |
02f1175c JS |
4707 | continue; |
4708 | } | |
4709 | ||
4710 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
4711 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4712 | "more channels are available. Change NR_PORTS " | |
4713 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 4714 | (unsigned long)cy_isa_address); |
3137553d | 4715 | iounmap(cy_isa_address); |
096dcfce | 4716 | return nboard; |
02f1175c JS |
4717 | } |
4718 | /* fill the next cy_card structure available */ | |
4719 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 4720 | if (cy_card[j].base_addr == NULL) |
02f1175c JS |
4721 | break; |
4722 | } | |
4723 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
4724 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4725 | "more cards can be used. Change NR_CARDS in " | |
4726 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 4727 | (unsigned long)cy_isa_address); |
3137553d | 4728 | iounmap(cy_isa_address); |
096dcfce | 4729 | return nboard; |
02f1175c JS |
4730 | } |
4731 | ||
4732 | /* allocate IRQ */ | |
4733 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
4734 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
4735 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
4736 | "could not allocate IRQ#%d.\n", | |
4737 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 4738 | iounmap(cy_isa_address); |
096dcfce | 4739 | return nboard; |
02f1175c JS |
4740 | } |
4741 | ||
4742 | /* set cy_card */ | |
4743 | cy_card[j].base_addr = cy_isa_address; | |
4744 | cy_card[j].ctl_addr = NULL; | |
4745 | cy_card[j].irq = (int)cy_isa_irq; | |
4746 | cy_card[j].bus_index = 0; | |
4747 | cy_card[j].first_line = cy_next_channel; | |
4748 | cy_card[j].num_chips = cy_isa_nchan / 4; | |
3137553d JS |
4749 | if (cy_init_card(&cy_card[j])) { |
4750 | cy_card[j].base_addr = NULL; | |
4751 | free_irq(cy_isa_irq, &cy_card[j]); | |
4752 | iounmap(cy_isa_address); | |
4753 | continue; | |
4754 | } | |
02f1175c JS |
4755 | nboard++; |
4756 | ||
21719191 JS |
4757 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
4758 | "%d channels starting from port %d\n", | |
02f1175c JS |
4759 | j + 1, (unsigned long)cy_isa_address, |
4760 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
4761 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
4762 | ||
6ad1ccc1 JS |
4763 | for (j = cy_next_channel; |
4764 | j < cy_next_channel + cy_isa_nchan; j++) | |
4765 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
4766 | cy_next_channel += cy_isa_nchan; |
4767 | } | |
096dcfce | 4768 | return nboard; |
1da177e4 | 4769 | #else |
096dcfce | 4770 | return 0; |
02f1175c JS |
4771 | #endif /* CONFIG_ISA */ |
4772 | } /* cy_detect_isa */ | |
1da177e4 | 4773 | |
58936d8d | 4774 | #ifdef CONFIG_PCI |
054f5b0a JS |
4775 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
4776 | { | |
4777 | unsigned int a; | |
4778 | ||
4779 | for (a = 0; a < size && *str; a++, str++) | |
4780 | if (*str & 0x80) | |
4781 | return -EINVAL; | |
4782 | ||
4783 | for (; a < size; a++, str++) | |
4784 | if (*str) | |
4785 | return -EINVAL; | |
4786 | ||
4787 | return 0; | |
4788 | } | |
4789 | ||
4790 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, u8 *data, | |
4791 | unsigned int size) | |
4792 | { | |
4793 | for (; size > 0; size--) { | |
4794 | cy_writel(fpga, *data++); | |
4795 | udelay(10); | |
4796 | } | |
4797 | } | |
4798 | ||
4799 | static void __devinit plx_init(struct pci_dev *pdev, int irq, | |
4800 | struct RUNTIME_9060 __iomem *addr) | |
1da177e4 | 4801 | { |
02f1175c | 4802 | /* Reset PLX */ |
054f5b0a | 4803 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 4804 | udelay(100L); |
054f5b0a | 4805 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
4806 | |
4807 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 4808 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 4809 | udelay(100L); |
054f5b0a JS |
4810 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
4811 | ||
4812 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
4813 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
4814 | * registers. This will remain here until we find a permanent fix. | |
4815 | */ | |
4816 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
4817 | } | |
4818 | ||
4819 | static int __devinit __cyz_load_fw(const struct firmware *fw, | |
4820 | const char *name, const u32 mailbox, void __iomem *base, | |
4821 | void __iomem *fpga) | |
4822 | { | |
4823 | void *ptr = fw->data; | |
4824 | struct zfile_header *h = ptr; | |
4825 | struct zfile_config *c, *cs; | |
4826 | struct zfile_block *b, *bs; | |
4827 | unsigned int a, tmp, len = fw->size; | |
4828 | #define BAD_FW KERN_ERR "Bad firmware: " | |
4829 | if (len < sizeof(*h)) { | |
4830 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
4831 | return -EINVAL; | |
4832 | } | |
4833 | ||
4834 | cs = ptr + h->config_offset; | |
4835 | bs = ptr + h->block_offset; | |
4836 | ||
4837 | if ((void *)(cs + h->n_config) > ptr + len || | |
4838 | (void *)(bs + h->n_blocks) > ptr + len) { | |
4839 | printk(BAD_FW "too short"); | |
4840 | return -EINVAL; | |
4841 | } | |
4842 | ||
4843 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
4844 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
4845 | printk(BAD_FW "bad formatted header string\n"); | |
4846 | return -EINVAL; | |
4847 | } | |
4848 | ||
4849 | if (strncmp(name, h->name, sizeof(h->name))) { | |
4850 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
4851 | return -EINVAL; | |
4852 | } | |
4853 | ||
4854 | tmp = 0; | |
4855 | for (c = cs; c < cs + h->n_config; c++) { | |
4856 | for (a = 0; a < c->n_blocks; a++) | |
4857 | if (c->block_list[a] > h->n_blocks) { | |
4858 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
4859 | return -EINVAL; | |
4860 | } | |
4861 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
4862 | tmp++; | |
4863 | } | |
4864 | if (!tmp) { | |
4865 | printk(BAD_FW "nothing appropriate\n"); | |
4866 | return -EINVAL; | |
4867 | } | |
4868 | ||
4869 | for (b = bs; b < bs + h->n_blocks; b++) | |
4870 | if (b->file_offset + b->size > len) { | |
4871 | printk(BAD_FW "bad block data offset\n"); | |
4872 | return -EINVAL; | |
4873 | } | |
4874 | ||
4875 | /* everything is OK, let's seek'n'load it */ | |
4876 | for (c = cs; c < cs + h->n_config; c++) | |
4877 | if (c->mailbox == mailbox && c->function == 0) | |
4878 | break; | |
4879 | ||
4880 | for (a = 0; a < c->n_blocks; a++) { | |
4881 | b = &bs[c->block_list[a]]; | |
4882 | if (b->type == ZBLOCK_FPGA) { | |
4883 | if (fpga != NULL) | |
4884 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
4885 | b->size); | |
4886 | } else { | |
4887 | if (base != NULL) | |
4888 | memcpy_toio(base + b->ram_offset, | |
4889 | ptr + b->file_offset, b->size); | |
4890 | } | |
4891 | } | |
4892 | #undef BAD_FW | |
4893 | return 0; | |
4894 | } | |
4895 | ||
4896 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, | |
4897 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) | |
4898 | { | |
4899 | const struct firmware *fw; | |
4900 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
4901 | struct CUSTOM_REG __iomem *cust = base_addr; | |
4902 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 4903 | void __iomem *tmp; |
054f5b0a JS |
4904 | u32 mailbox, status; |
4905 | unsigned int i; | |
4906 | int retval; | |
4907 | ||
4908 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
4909 | if (retval) { | |
4910 | dev_err(&pdev->dev, "can't get firmware\n"); | |
4911 | goto err; | |
4912 | } | |
4913 | ||
4914 | /* Check whether the firmware is already loaded and running. If | |
4915 | positive, skip this board */ | |
4916 | if (Z_FPGA_LOADED(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { | |
4917 | u32 cntval = readl(base_addr + 0x190); | |
4918 | ||
4919 | udelay(100); | |
4920 | if (cntval != readl(base_addr + 0x190)) { | |
4921 | /* FW counter is working, FW is running */ | |
4922 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
4923 | "Skipping board.\n"); | |
4924 | retval = 0; | |
4925 | goto err_rel; | |
4926 | } | |
4927 | } | |
4928 | ||
4929 | /* start boot */ | |
4930 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
4931 | ~0x00030800UL); | |
4932 | ||
4933 | mailbox = readl(&ctl_addr->mail_box_0); | |
4934 | ||
4935 | if (mailbox == 0 || Z_FPGA_LOADED(ctl_addr)) { | |
4936 | /* stops CPU and set window to beginning of RAM */ | |
4937 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
4938 | cy_writel(&cust->cpu_stop, 0); | |
4939 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
4940 | udelay(100); | |
4941 | } | |
4942 | ||
4943 | plx_init(pdev, irq, ctl_addr); | |
4944 | ||
4945 | if (mailbox != 0) { | |
4946 | /* load FPGA */ | |
4947 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
4948 | base_addr); | |
4949 | if (retval) | |
4950 | goto err_rel; | |
4951 | if (!Z_FPGA_LOADED(ctl_addr)) { | |
4952 | dev_err(&pdev->dev, "fw upload successful, but fw is " | |
4953 | "not loaded\n"); | |
4954 | goto err_rel; | |
4955 | } | |
4956 | } | |
4957 | ||
4958 | /* stops CPU and set window to beginning of RAM */ | |
4959 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
4960 | cy_writel(&cust->cpu_stop, 0); | |
4961 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
4962 | udelay(100); | |
4963 | ||
4964 | /* clear memory */ | |
c4923b4f | 4965 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
4966 | cy_writeb(tmp, 255); |
4967 | if (mailbox != 0) { | |
4968 | /* set window to last 512K of RAM */ | |
4969 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
4970 | //sleep(1); | |
c4923b4f | 4971 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
4972 | cy_writeb(tmp, 255); |
4973 | /* set window to beginning of RAM */ | |
4974 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
4975 | //sleep(1); | |
4976 | } | |
4977 | ||
4978 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
4979 | release_firmware(fw); | |
4980 | if (retval) | |
4981 | goto err; | |
4982 | ||
4983 | /* finish boot and start boards */ | |
4984 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
4985 | cy_writel(&cust->cpu_start, 0); | |
4986 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
4987 | i = 0; | |
4988 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
4989 | msleep(100); | |
4990 | if (status != ZFIRM_ID) { | |
4991 | if (status == ZFIRM_HLT) { | |
4992 | dev_err(&pdev->dev, "you need an external power supply " | |
4993 | "for this number of ports. Firmware halted and " | |
4994 | "board reset.\n"); | |
4995 | retval = -EIO; | |
4996 | goto err; | |
4997 | } | |
4998 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
4999 | "some more time\n", status); | |
5000 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
5001 | i++ < 200) | |
5002 | msleep(100); | |
5003 | if (status != ZFIRM_ID) { | |
5004 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
5005 | "Giving up. (fid->signature = 0x%x)\n", | |
5006 | status); | |
5007 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
5008 | "upgrading the FW, please power cycle the " | |
5009 | "system before loading the new FW to the " | |
5010 | "Cyclades-Z.\n"); | |
5011 | ||
5012 | if (Z_FPGA_LOADED(ctl_addr)) | |
5013 | plx_init(pdev, irq, ctl_addr); | |
5014 | ||
5015 | retval = -EIO; | |
5016 | goto err; | |
5017 | } | |
5018 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
5019 | i / 10); | |
5020 | } | |
5021 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
5022 | ||
5023 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
5024 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
5025 | base_addr + readl(&fid->zfwctrl_addr)); | |
5026 | ||
5027 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", | |
5028 | readl(&pt_zfwctrl->board_ctrl.fw_version), | |
5029 | readl(&pt_zfwctrl->board_ctrl.n_channel)); | |
5030 | ||
5031 | if (readl(&pt_zfwctrl->board_ctrl.n_channel) == 0) { | |
5032 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " | |
5033 | "check the connection between the Z host card and the " | |
5034 | "serial expanders.\n"); | |
5035 | ||
5036 | if (Z_FPGA_LOADED(ctl_addr)) | |
5037 | plx_init(pdev, irq, ctl_addr); | |
5038 | ||
5039 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
5040 | "reset.\n"); | |
5041 | retval = 0; | |
5042 | goto err; | |
5043 | } | |
5044 | ||
5045 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
5046 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
5047 | ||
5048 | /* | |
5049 | Early firmware failed to start looking for commands. | |
5050 | This enables firmware interrupts for those commands. | |
5051 | */ | |
5052 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
5053 | (1 << 17)); | |
5054 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
5055 | 0x00030800UL); | |
5056 | ||
5057 | plx_init(pdev, irq, ctl_addr); | |
5058 | ||
5059 | return 0; | |
5060 | err_rel: | |
5061 | release_firmware(fw); | |
5062 | err: | |
5063 | return retval; | |
1da177e4 LT |
5064 | } |
5065 | ||
58936d8d JS |
5066 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
5067 | const struct pci_device_id *ent) | |
1da177e4 | 5068 | { |
3137553d JS |
5069 | void __iomem *addr0 = NULL, *addr2 = NULL; |
5070 | char *card_name = NULL; | |
5071 | u32 mailbox; | |
5072 | unsigned int device_id, nchan = 0, card_no, i; | |
5073 | unsigned char plx_ver; | |
5074 | int retval, irq; | |
02f1175c | 5075 | |
58936d8d JS |
5076 | retval = pci_enable_device(pdev); |
5077 | if (retval) { | |
5078 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 5079 | goto err; |
58936d8d | 5080 | } |
1da177e4 | 5081 | |
58936d8d | 5082 | /* read PCI configuration area */ |
3137553d | 5083 | irq = pdev->irq; |
58936d8d | 5084 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 5085 | |
3137553d JS |
5086 | #if defined(__alpha__) |
5087 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
5088 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
5089 | "addresses on Alpha systems.\n"); | |
5090 | retval = -EIO; | |
5091 | goto err_dis; | |
5092 | } | |
5093 | #endif | |
5094 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
5095 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
5096 | "addresses\n"); | |
5097 | retval = -EIO; | |
5098 | goto err_dis; | |
5099 | } | |
5100 | ||
5101 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
5102 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
5103 | "it...\n"); | |
5104 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
5105 | } | |
5106 | ||
5107 | retval = pci_request_regions(pdev, "cyclades"); | |
5108 | if (retval) { | |
5109 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
5110 | goto err_dis; | |
5111 | } | |
5112 | ||
5113 | retval = -EIO; | |
58936d8d JS |
5114 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
5115 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 5116 | card_name = "Cyclom-Y"; |
1da177e4 | 5117 | |
3137553d JS |
5118 | addr0 = pci_iomap(pdev, 0, CyPCI_Yctl); |
5119 | if (addr0 == NULL) { | |
5120 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
5121 | goto err_reg; | |
58936d8d | 5122 | } |
3137553d JS |
5123 | addr2 = pci_iomap(pdev, 2, CyPCI_Ywin); |
5124 | if (addr2 == NULL) { | |
5125 | dev_err(&pdev->dev, "can't remap base region\n"); | |
5126 | goto err_unmap; | |
58936d8d | 5127 | } |
1da177e4 | 5128 | |
3137553d JS |
5129 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
5130 | if (nchan == 0) { | |
21719191 JS |
5131 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
5132 | "Serial-Modules\n"); | |
58936d8d JS |
5133 | return -EIO; |
5134 | } | |
58936d8d | 5135 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 5136 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 5137 | |
3137553d JS |
5138 | ctl_addr = addr0 = pci_iomap(pdev, 0, CyPCI_Zctl); |
5139 | if (addr0 == NULL) { | |
5140 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
5141 | goto err_reg; | |
5142 | } | |
58936d8d JS |
5143 | |
5144 | /* Disable interrupts on the PLX before resetting it */ | |
054f5b0a | 5145 | cy_writew(addr0 + 0x68, readw(addr0 + 0x68) & ~0x0900); |
58936d8d | 5146 | |
054f5b0a | 5147 | plx_init(pdev, irq, addr0); |
02f1175c | 5148 | |
3137553d | 5149 | mailbox = (u32)readl(&ctl_addr->mail_box_0); |
58936d8d | 5150 | |
3137553d JS |
5151 | addr2 = pci_iomap(pdev, 2, mailbox == ZE_V1 ? |
5152 | CyPCI_Ze_win : CyPCI_Zwin); | |
5153 | if (addr2 == NULL) { | |
5154 | dev_err(&pdev->dev, "can't remap base region\n"); | |
5155 | goto err_unmap; | |
58936d8d JS |
5156 | } |
5157 | ||
5158 | if (mailbox == ZE_V1) { | |
3137553d JS |
5159 | card_name = "Cyclades-Ze"; |
5160 | ||
5161 | readl(&ctl_addr->mail_box_0); | |
5162 | nchan = ZE_V1_NPORTS; | |
58936d8d | 5163 | } else { |
3137553d | 5164 | card_name = "Cyclades-8Zo"; |
1da177e4 LT |
5165 | |
5166 | #ifdef CY_PCI_DEBUG | |
3137553d JS |
5167 | if (mailbox == ZO_V1) { |
5168 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
5169 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
5170 | "id %lx, ver %lx\n", (ulong)(0xff & | |
5171 | readl(&((struct CUSTOM_REG *)addr2)-> | |
5172 | fpga_id)), (ulong)(0xff & | |
5173 | readl(&((struct CUSTOM_REG *)addr2)-> | |
5174 | fpga_version))); | |
5175 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
5176 | } else { | |
5177 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
5178 | "Cyclades-Z board. FPGA not loaded\n"); | |
5179 | } | |
1da177e4 | 5180 | #endif |
3137553d JS |
5181 | /* The following clears the firmware id word. This |
5182 | ensures that the driver will not attempt to talk to | |
5183 | the board until it has been properly initialized. | |
5184 | */ | |
5185 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
5186 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
1da177e4 | 5187 | |
054f5b0a JS |
5188 | retval = cyz_load_fw(pdev, addr2, addr0, irq); |
5189 | if (retval) | |
5190 | goto err_unmap; | |
3137553d JS |
5191 | /* This must be a Cyclades-8Zo/PCI. The extendable |
5192 | version will have a different device_id and will | |
5193 | be allocated its maximum number of ports. */ | |
5194 | nchan = 8; | |
58936d8d | 5195 | } |
3137553d JS |
5196 | } |
5197 | ||
5198 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
5199 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
5200 | "channels are available. Change NR_PORTS in " | |
5201 | "cyclades.c and recompile kernel.\n"); | |
5202 | goto err_unmap; | |
5203 | } | |
5204 | /* fill the next cy_card structure available */ | |
5205 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
5206 | if (cy_card[card_no].base_addr == NULL) | |
5207 | break; | |
5208 | } | |
5209 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
5210 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
5211 | "more cards can be used. Change NR_CARDS in " | |
5212 | "cyclades.c and recompile kernel.\n"); | |
5213 | goto err_unmap; | |
5214 | } | |
5215 | ||
5216 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
5217 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
5218 | /* allocate IRQ */ | |
5219 | retval = request_irq(irq, cyy_interrupt, | |
5220 | IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); | |
5221 | if (retval) { | |
5222 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
5223 | goto err_unmap; | |
58936d8d | 5224 | } |
3137553d JS |
5225 | cy_card[card_no].num_chips = nchan / 4; |
5226 | } else { | |
02f1175c | 5227 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 5228 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
5229 | if (irq != 0 && irq != 255) { |
5230 | retval = request_irq(irq, cyz_interrupt, | |
58936d8d | 5231 | IRQF_SHARED, "Cyclades-Z", |
3137553d | 5232 | &cy_card[card_no]); |
58936d8d | 5233 | if (retval) { |
21719191 | 5234 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 5235 | goto err_unmap; |
02f1175c | 5236 | } |
58936d8d | 5237 | } |
02f1175c | 5238 | #endif /* CONFIG_CYZ_INTR */ |
3137553d JS |
5239 | cy_card[card_no].num_chips = -1; |
5240 | } | |
02f1175c | 5241 | |
3137553d JS |
5242 | /* set cy_card */ |
5243 | cy_card[card_no].base_addr = addr2; | |
5244 | cy_card[card_no].ctl_addr = addr0; | |
5245 | cy_card[card_no].irq = irq; | |
5246 | cy_card[card_no].bus_index = 1; | |
5247 | cy_card[card_no].first_line = cy_next_channel; | |
5248 | retval = cy_init_card(&cy_card[card_no]); | |
5249 | if (retval) | |
5250 | goto err_null; | |
58936d8d | 5251 | |
3137553d | 5252 | pci_set_drvdata(pdev, &cy_card[card_no]); |
58936d8d | 5253 | |
3137553d JS |
5254 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
5255 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
5256 | /* enable interrupts in the PCI interface */ | |
5257 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
5258 | switch (plx_ver) { | |
5259 | case PLX_9050: | |
5260 | ||
5261 | cy_writeb(addr0 + 0x4c, 0x43); | |
5262 | break; | |
5263 | ||
5264 | case PLX_9060: | |
5265 | case PLX_9080: | |
5266 | default: /* Old boards, use PLX_9060 */ | |
054f5b0a | 5267 | plx_init(pdev, irq, addr0); |
3137553d JS |
5268 | cy_writew(addr0 + 0x68, readw(addr0 + 0x68) | 0x0900); |
5269 | break; | |
5270 | } | |
58936d8d JS |
5271 | } |
5272 | ||
3137553d JS |
5273 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
5274 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
5275 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) | |
5276 | tty_register_device(cy_serial_driver, i, &pdev->dev); | |
5277 | cy_next_channel += nchan; | |
5278 | ||
58936d8d | 5279 | return 0; |
3137553d JS |
5280 | err_null: |
5281 | cy_card[card_no].base_addr = NULL; | |
5282 | free_irq(irq, &cy_card[card_no]); | |
5283 | err_unmap: | |
5284 | pci_iounmap(pdev, addr0); | |
5285 | if (addr2) | |
5286 | pci_iounmap(pdev, addr2); | |
5287 | err_reg: | |
5288 | pci_release_regions(pdev); | |
5289 | err_dis: | |
5290 | pci_disable_device(pdev); | |
5291 | err: | |
5292 | return retval; | |
58936d8d | 5293 | } |
58936d8d | 5294 | |
6747cd93 | 5295 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 5296 | { |
38d09093 | 5297 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 5298 | unsigned int i; |
38d09093 | 5299 | |
85c93fa9 | 5300 | /* non-Z with old PLX */ |
c2ad4c75 JS |
5301 | if (!IS_CYC_Z(*cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
5302 | PLX_9050) | |
85c93fa9 JS |
5303 | cy_writeb(cinfo->ctl_addr + 0x4c, 0); |
5304 | else | |
5305 | #ifndef CONFIG_CYZ_INTR | |
c2ad4c75 | 5306 | if (!IS_CYC_Z(*cinfo)) |
85c93fa9 JS |
5307 | #endif |
5308 | cy_writew(cinfo->ctl_addr + 0x68, | |
5309 | readw(cinfo->ctl_addr + 0x68) & ~0x0900); | |
5310 | ||
38d09093 JS |
5311 | pci_iounmap(pdev, cinfo->base_addr); |
5312 | if (cinfo->ctl_addr) | |
5313 | pci_iounmap(pdev, cinfo->ctl_addr); | |
5314 | if (cinfo->irq | |
5315 | #ifndef CONFIG_CYZ_INTR | |
c2ad4c75 | 5316 | && !IS_CYC_Z(*cinfo) |
38d09093 JS |
5317 | #endif /* CONFIG_CYZ_INTR */ |
5318 | ) | |
5319 | free_irq(cinfo->irq, cinfo); | |
5320 | pci_release_regions(pdev); | |
5321 | ||
5322 | cinfo->base_addr = NULL; | |
6ad1ccc1 JS |
5323 | for (i = cinfo->first_line; i < cinfo->first_line + |
5324 | cinfo->nports; i++) | |
5325 | tty_unregister_device(cy_serial_driver, i); | |
dd025c0c JS |
5326 | cinfo->nports = 0; |
5327 | kfree(cinfo->ports); | |
38d09093 JS |
5328 | } |
5329 | ||
6747cd93 JS |
5330 | static struct pci_driver cy_pci_driver = { |
5331 | .name = "cyclades", | |
5332 | .id_table = cy_pci_dev_id, | |
5333 | .probe = cy_pci_probe, | |
5334 | .remove = __devexit_p(cy_pci_remove) | |
5335 | }; | |
5336 | #endif | |
5337 | ||
02f1175c | 5338 | static int |
1da177e4 | 5339 | cyclades_get_proc_info(char *buf, char **start, off_t offset, int length, |
02f1175c | 5340 | int *eof, void *data) |
1da177e4 | 5341 | { |
02f1175c | 5342 | struct cyclades_port *info; |
dd025c0c | 5343 | unsigned int i, j; |
02f1175c JS |
5344 | int len = 0; |
5345 | off_t begin = 0; | |
5346 | off_t pos = 0; | |
5347 | int size; | |
5348 | __u32 cur_jifs = jiffies; | |
5349 | ||
5350 | size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn " | |
5351 | "IdleIn Overruns Ldisc\n"); | |
5352 | ||
5353 | pos += size; | |
1da177e4 | 5354 | len += size; |
1da177e4 | 5355 | |
02f1175c | 5356 | /* Output one line for each known port */ |
dd025c0c JS |
5357 | for (i = 0; i < NR_CARDS; i++) |
5358 | for (j = 0; j < cy_card[i].nports; j++) { | |
5359 | info = &cy_card[i].ports[j]; | |
5360 | ||
5361 | if (info->count) | |
5362 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu " | |
5363 | "%10lu %8lu %9lu %6ld\n", info->line, | |
5364 | (cur_jifs - info->idle_stats.in_use) / | |
5365 | HZ, info->idle_stats.xmit_bytes, | |
5366 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
5367 | HZ, info->idle_stats.recv_bytes, | |
5368 | (cur_jifs - info->idle_stats.recv_idle)/ | |
5369 | HZ, info->idle_stats.overruns, | |
5370 | (long)info->tty->ldisc.num); | |
5371 | else | |
5372 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu " | |
5373 | "%10lu %8lu %9lu %6ld\n", | |
5374 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
5375 | len += size; | |
5376 | pos = begin + len; | |
5377 | ||
5378 | if (pos < offset) { | |
5379 | len = 0; | |
5380 | begin = pos; | |
5381 | } | |
5382 | if (pos > offset + length) | |
5383 | goto done; | |
02f1175c | 5384 | } |
02f1175c | 5385 | *eof = 1; |
1da177e4 | 5386 | done: |
02f1175c JS |
5387 | *start = buf + (offset - begin); /* Start of wanted data */ |
5388 | len -= (offset - begin); /* Start slop */ | |
5389 | if (len > length) | |
5390 | len = length; /* Ending slop */ | |
5391 | if (len < 0) | |
5392 | len = 0; | |
5393 | return len; | |
1da177e4 LT |
5394 | } |
5395 | ||
5396 | /* The serial driver boot-time initialization code! | |
5397 | Hardware I/O ports are mapped to character special devices on a | |
5398 | first found, first allocated manner. That is, this code searches | |
5399 | for Cyclom cards in the system. As each is found, it is probed | |
5400 | to discover how many chips (and thus how many ports) are present. | |
5401 | These ports are mapped to the tty ports 32 and upward in monotonic | |
5402 | fashion. If an 8-port card is replaced with a 16-port card, the | |
5403 | port mapping on a following card will shift. | |
5404 | ||
5405 | This approach is different from what is used in the other serial | |
5406 | device driver because the Cyclom is more properly a multiplexer, | |
5407 | not just an aggregation of serial ports on one card. | |
5408 | ||
5409 | If there are more cards with more ports than have been | |
5410 | statically allocated above, a warning is printed and the | |
5411 | extra ports are ignored. | |
5412 | */ | |
5413 | ||
b68e31d0 | 5414 | static const struct tty_operations cy_ops = { |
02f1175c JS |
5415 | .open = cy_open, |
5416 | .close = cy_close, | |
5417 | .write = cy_write, | |
5418 | .put_char = cy_put_char, | |
5419 | .flush_chars = cy_flush_chars, | |
5420 | .write_room = cy_write_room, | |
5421 | .chars_in_buffer = cy_chars_in_buffer, | |
5422 | .flush_buffer = cy_flush_buffer, | |
5423 | .ioctl = cy_ioctl, | |
5424 | .throttle = cy_throttle, | |
5425 | .unthrottle = cy_unthrottle, | |
5426 | .set_termios = cy_set_termios, | |
5427 | .stop = cy_stop, | |
5428 | .start = cy_start, | |
5429 | .hangup = cy_hangup, | |
5430 | .break_ctl = cy_break, | |
5431 | .wait_until_sent = cy_wait_until_sent, | |
5432 | .read_proc = cyclades_get_proc_info, | |
5433 | .tiocmget = cy_tiocmget, | |
5434 | .tiocmset = cy_tiocmset, | |
1da177e4 LT |
5435 | }; |
5436 | ||
02f1175c | 5437 | static int __init cy_init(void) |
1da177e4 | 5438 | { |
dd025c0c | 5439 | unsigned int nboards; |
9dacf3b2 | 5440 | int retval = -ENOMEM; |
02f1175c JS |
5441 | |
5442 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
5443 | if (!cy_serial_driver) | |
9dacf3b2 | 5444 | goto err; |
21719191 JS |
5445 | |
5446 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", | |
5447 | __DATE__, __TIME__); | |
02f1175c JS |
5448 | |
5449 | /* Initialize the tty_driver structure */ | |
5450 | ||
5451 | cy_serial_driver->owner = THIS_MODULE; | |
5452 | cy_serial_driver->driver_name = "cyclades"; | |
5453 | cy_serial_driver->name = "ttyC"; | |
5454 | cy_serial_driver->major = CYCLADES_MAJOR; | |
5455 | cy_serial_driver->minor_start = 0; | |
5456 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
5457 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
5458 | cy_serial_driver->init_termios = tty_std_termios; | |
5459 | cy_serial_driver->init_termios.c_cflag = | |
5460 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 5461 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
5462 | tty_set_operations(cy_serial_driver, &cy_ops); |
5463 | ||
9dacf3b2 JS |
5464 | retval = tty_register_driver(cy_serial_driver); |
5465 | if (retval) { | |
5466 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
5467 | goto err_frtty; | |
5468 | } | |
02f1175c | 5469 | |
02f1175c JS |
5470 | /* the code below is responsible to find the boards. Each different |
5471 | type of board has its own detection routine. If a board is found, | |
5472 | the next cy_card structure available is set by the detection | |
5473 | routine. These functions are responsible for checking the | |
5474 | availability of cy_card and cy_port data structures and updating | |
5475 | the cy_next_channel. */ | |
5476 | ||
5477 | /* look for isa boards */ | |
14a55a67 | 5478 | nboards = cy_detect_isa(); |
02f1175c | 5479 | |
6747cd93 | 5480 | #ifdef CONFIG_PCI |
02f1175c | 5481 | /* look for pci boards */ |
6747cd93 JS |
5482 | retval = pci_register_driver(&cy_pci_driver); |
5483 | if (retval && !nboards) | |
9dacf3b2 | 5484 | goto err_unr; |
6747cd93 | 5485 | #endif |
9dacf3b2 JS |
5486 | |
5487 | return 0; | |
5488 | err_unr: | |
5489 | tty_unregister_driver(cy_serial_driver); | |
5490 | err_frtty: | |
5491 | put_tty_driver(cy_serial_driver); | |
5492 | err: | |
5493 | return retval; | |
02f1175c | 5494 | } /* cy_init */ |
1da177e4 | 5495 | |
02f1175c | 5496 | static void __exit cy_cleanup_module(void) |
1da177e4 | 5497 | { |
dd025c0c | 5498 | struct cyclades_card *card; |
02f1175c | 5499 | int i, e1; |
1da177e4 LT |
5500 | |
5501 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 5502 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
5503 | #endif /* CONFIG_CYZ_INTR */ |
5504 | ||
02f1175c | 5505 | if ((e1 = tty_unregister_driver(cy_serial_driver))) |
21719191 JS |
5506 | printk(KERN_ERR "failed to unregister Cyclades serial " |
5507 | "driver(%d)\n", e1); | |
1da177e4 | 5508 | |
6747cd93 JS |
5509 | #ifdef CONFIG_PCI |
5510 | pci_unregister_driver(&cy_pci_driver); | |
5511 | #endif | |
5512 | ||
02f1175c | 5513 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
5514 | card = &cy_card[i]; |
5515 | if (card->base_addr) { | |
85c93fa9 | 5516 | /* clear interrupt */ |
dd025c0c JS |
5517 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
5518 | iounmap(card->base_addr); | |
5519 | if (card->ctl_addr) | |
5520 | iounmap(card->ctl_addr); | |
5521 | if (card->irq | |
1da177e4 | 5522 | #ifndef CONFIG_CYZ_INTR |
dd025c0c | 5523 | && !IS_CYC_Z(*card) |
1da177e4 | 5524 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 5525 | ) |
dd025c0c JS |
5526 | free_irq(card->irq, card); |
5527 | for (e1 = card->first_line; | |
5528 | e1 < card->first_line + | |
5529 | card->nports; e1++) | |
6ad1ccc1 | 5530 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 5531 | kfree(card->ports); |
02f1175c JS |
5532 | } |
5533 | } | |
f2462bfe JS |
5534 | |
5535 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
5536 | } /* cy_cleanup_module */ |
5537 | ||
5538 | module_init(cy_init); | |
5539 | module_exit(cy_cleanup_module); | |
5540 | ||
5541 | MODULE_LICENSE("GPL"); | |
c8e1693a | 5542 | MODULE_VERSION(CY_VERSION); |