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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 | * | |
1da177e4 LT |
24 | * Prevent users from opening non-existing Z ports. |
25 | * | |
26 | * Revision 2.3.2.8 2000/07/06 18:14:16 ivan | |
27 | * Fixed the PCI detection function to work properly on Alpha systems. | |
28 | * Implemented support for TIOCSERGETLSR ioctl. | |
29 | * Implemented full support for non-standard baud rates. | |
30 | * | |
31 | * Revision 2.3.2.7 2000/06/01 18:26:34 ivan | |
32 | * Request PLX I/O region, although driver doesn't use it, to avoid | |
33 | * problems with other drivers accessing it. | |
34 | * Removed count for on-board buffer characters in cy_chars_in_buffer | |
35 | * (Cyclades-Z only). | |
36 | * | |
37 | * Revision 2.3.2.6 2000/05/05 13:56:05 ivan | |
38 | * Driver now reports physical instead of virtual memory addresses. | |
39 | * Masks were added to some Cyclades-Z read accesses. | |
40 | * Implemented workaround for PLX9050 bug that would cause a system lockup | |
41 | * in certain systems, depending on the MMIO addresses allocated to the | |
42 | * board. | |
43 | * Changed the Tx interrupt programming in the CD1400 chips to boost up | |
44 | * performance (Cyclom-Y only). | |
45 | * Code is now compliant with the new module interface (module_[init|exit]). | |
46 | * Make use of the PCI helper functions to access PCI resources. | |
47 | * Did some code "housekeeping". | |
48 | * | |
49 | * Revision 2.3.2.5 2000/01/19 14:35:33 ivan | |
50 | * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. | |
51 | * | |
52 | * Revision 2.3.2.4 2000/01/17 09:19:40 ivan | |
53 | * Fixed SMP locking in Cyclom-Y interrupt handler. | |
54 | * | |
55 | * Revision 2.3.2.3 1999/12/28 12:11:39 ivan | |
56 | * Added a new cyclades_card field called nports to allow the driver to | |
57 | * know the exact number of ports found by the Z firmware after its load; | |
58 | * RX buffer contention prevention logic on interrupt op mode revisited | |
59 | * (Cyclades-Z only); | |
60 | * Revisited printk's for Z debug; | |
61 | * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; | |
62 | * | |
63 | * Revision 2.3.2.2 1999/10/01 11:27:43 ivan | |
15ed6cc0 | 64 | * Fixed bug in cyz_poll that would make all ports but port 0 |
1da177e4 LT |
65 | * unable to transmit/receive data (Cyclades-Z only); |
66 | * Implemented logic to prevent the RX buffer from being stuck with data | |
67 | * due to a driver / firmware race condition in interrupt op mode | |
68 | * (Cyclades-Z only); | |
69 | * Fixed bug in block_til_ready logic that would lead to a system crash; | |
70 | * Revisited cy_close spinlock usage; | |
71 | * | |
72 | * Revision 2.3.2.1 1999/09/28 11:01:22 ivan | |
73 | * Revisited CONFIG_PCI conditional compilation for PCI board support; | |
74 | * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; | |
75 | * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; | |
76 | * Removed CTS handling from the driver -- this is now completely handled | |
77 | * by the firmware (Cyclades-Z only); | |
78 | * Flush RX on-board buffers on a port open (Cyclades-Z only); | |
79 | * Fixed handling of ASYNC_SPD_* TTY flags; | |
80 | * Module unload now unmaps all memory area allocated by ioremap; | |
81 | * | |
82 | * Revision 2.3.1.1 1999/07/15 16:45:53 ivan | |
83 | * Removed CY_PROC conditional compilation; | |
84 | * Implemented SMP-awareness for the driver; | |
15ed6cc0 | 85 | * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] |
1da177e4 LT |
86 | * functions; |
87 | * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs | |
88 | * (irq=NN) as parameters (only for ISA boards); | |
15ed6cc0 | 89 | * Fixed bug in set_line_char that would prevent the Cyclades-Z |
1da177e4 LT |
90 | * ports from being configured at speeds above 115.2Kbps; |
91 | * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control | |
92 | * switching from working properly; | |
15ed6cc0 | 93 | * The driver now only prints IRQ info for the Cyclades-Z if it's |
1da177e4 LT |
94 | * configured to work in interrupt mode; |
95 | * | |
96 | * Revision 2.2.2.3 1999/06/28 11:13:29 ivan | |
97 | * Added support for interrupt mode operation for the Z cards; | |
98 | * Removed the driver inactivity control for the Z; | |
15ed6cc0 | 99 | * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when |
1da177e4 | 100 | * the Z firmware is not loaded yet; |
15ed6cc0 | 101 | * Replaced the "manual" Z Tx flush buffer by a call to a FW command of |
1da177e4 | 102 | * same functionality; |
15ed6cc0 | 103 | * Implemented workaround for IRQ setting loss on the PCI configuration |
1da177e4 LT |
104 | * registers after a PCI bridge EEPROM reload (affects PLX9060 only); |
105 | * | |
106 | * Revision 2.2.2.2 1999/05/14 17:18:15 ivan | |
107 | * /proc entry location changed to /proc/tty/driver/cyclades; | |
108 | * Added support to shared IRQ's (only for PCI boards); | |
109 | * Added support for Cobalt Qube2 systems; | |
110 | * IRQ [de]allocation scheme revisited; | |
111 | * BREAK implementation changed in order to make use of the 'break_ctl' | |
112 | * TTY facility; | |
113 | * Fixed typo in TTY structure field 'driver_name'; | |
15ed6cc0 | 114 | * Included a PCI bridge reset and EEPROM reload in the board |
1da177e4 LT |
115 | * initialization code (for both Y and Z series). |
116 | * | |
117 | * Revision 2.2.2.1 1999/04/08 16:17:43 ivan | |
15ed6cc0 | 118 | * Fixed a bug in cy_wait_until_sent that was preventing the port to be |
1da177e4 LT |
119 | * closed properly after a SIGINT; |
120 | * Module usage counter scheme revisited; | |
121 | * Added support to the upcoming Y PCI boards (i.e., support to additional | |
122 | * PCI Device ID's). | |
15ed6cc0 | 123 | * |
1da177e4 LT |
124 | * Revision 2.2.1.10 1999/01/20 16:14:29 ivan |
125 | * Removed all unnecessary page-alignement operations in ioremap calls | |
126 | * (ioremap is currently safe for these operations). | |
127 | * | |
128 | * Revision 2.2.1.9 1998/12/30 18:18:30 ivan | |
15ed6cc0 | 129 | * Changed access to PLX PCI bridge registers from I/O to MMIO, in |
1da177e4 LT |
130 | * order to make PLX9050-based boards work with certain motherboards. |
131 | * | |
132 | * Revision 2.2.1.8 1998/11/13 12:46:20 ivan | |
133 | * cy_close function now resets (correctly) the tty->closing flag; | |
134 | * JIFFIES_DIFF macro fixed. | |
135 | * | |
136 | * Revision 2.2.1.7 1998/09/03 12:07:28 ivan | |
137 | * Fixed bug in cy_close function, which was not informing HW of | |
138 | * which port should have the reception disabled before doing so; | |
139 | * fixed Cyclom-8YoP hardware detection bug. | |
140 | * | |
141 | * Revision 2.2.1.6 1998/08/20 17:15:39 ivan | |
142 | * Fixed bug in cy_close function, which causes malfunction | |
143 | * of one of the first 4 ports when a higher port is closed | |
144 | * (Cyclom-Y only). | |
145 | * | |
146 | * Revision 2.2.1.5 1998/08/10 18:10:28 ivan | |
147 | * Fixed Cyclom-4Yo hardware detection bug. | |
148 | * | |
149 | * Revision 2.2.1.4 1998/08/04 11:02:50 ivan | |
15ed6cc0 | 150 | * /proc/cyclades implementation with great collaboration of |
1da177e4 LT |
151 | * Marc Lewis <marc@blarg.net>; |
152 | * cyy_interrupt was changed to avoid occurrence of kernel oopses | |
153 | * during PPP operation. | |
154 | * | |
155 | * Revision 2.2.1.3 1998/06/01 12:09:10 ivan | |
156 | * General code review in order to comply with 2.1 kernel standards; | |
157 | * data loss prevention for slow devices revisited (cy_wait_until_sent | |
158 | * was created); | |
15ed6cc0 | 159 | * removed conditional compilation for new/old PCI structure support |
1da177e4 LT |
160 | * (now the driver only supports the new PCI structure). |
161 | * | |
162 | * Revision 2.2.1.1 1998/03/19 16:43:12 ivan | |
163 | * added conditional compilation for new/old PCI structure support; | |
164 | * removed kernel series (2.0.x / 2.1.x) conditional compilation. | |
165 | * | |
166 | * Revision 2.1.1.3 1998/03/16 18:01:12 ivan | |
167 | * cleaned up the data loss fix; | |
168 | * fixed XON/XOFF handling once more (Cyclades-Z); | |
169 | * general review of the driver routines; | |
15ed6cc0 | 170 | * introduction of a mechanism to prevent data loss with slow |
1da177e4 LT |
171 | * printers, by forcing a delay before closing the port. |
172 | * | |
173 | * Revision 2.1.1.2 1998/02/17 16:50:00 ivan | |
174 | * fixed detection/handling of new CD1400 in Ye boards; | |
175 | * fixed XON/XOFF handling (Cyclades-Z); | |
176 | * fixed data loss caused by a premature port close; | |
177 | * introduction of a flag that holds the CD1400 version ID per port | |
178 | * (used by the CYGETCD1400VER new ioctl). | |
179 | * | |
180 | * Revision 2.1.1.1 1997/12/03 17:31:19 ivan | |
181 | * Code review for the module cleanup routine; | |
182 | * fixed RTS and DTR status report for new CD1400's in get_modem_info; | |
183 | * includes anonymous changes regarding signal_pending. | |
15ed6cc0 | 184 | * |
1da177e4 LT |
185 | * Revision 2.1 1997/11/01 17:42:41 ivan |
186 | * Changes in the driver to support Alpha systems (except 8Zo V_1); | |
187 | * BREAK fix for the Cyclades-Z boards; | |
188 | * driver inactivity control by FW implemented; | |
15ed6cc0 | 189 | * introduction of flag that allows driver to take advantage of |
1da177e4 LT |
190 | * a special CD1400 feature related to HW flow control; |
191 | * added support for the CD1400 rev. J (Cyclom-Y boards); | |
192 | * introduction of ioctls to: | |
193 | * - control the rtsdtr_inv flag (Cyclom-Y); | |
194 | * - control the rflow flag (Cyclom-Y); | |
195 | * - adjust the polling interval (Cyclades-Z); | |
196 | * | |
197 | * Revision 1.36.4.33 1997/06/27 19:00:00 ivan | |
15ed6cc0 | 198 | * Fixes related to kernel version conditional |
1da177e4 | 199 | * compilation. |
15ed6cc0 | 200 | * |
1da177e4 | 201 | * Revision 1.36.4.32 1997/06/14 19:30:00 ivan |
15ed6cc0 | 202 | * Compatibility issues between kernels 2.0.x and |
1da177e4 | 203 | * 2.1.x (mainly related to clear_bit function). |
15ed6cc0 | 204 | * |
1da177e4 | 205 | * Revision 1.36.4.31 1997/06/03 15:30:00 ivan |
15ed6cc0 | 206 | * Changes to define the memory window according to the |
1da177e4 | 207 | * board type. |
15ed6cc0 | 208 | * |
1da177e4 LT |
209 | * Revision 1.36.4.30 1997/05/16 15:30:00 daniel |
210 | * Changes to support new cycladesZ boards. | |
211 | * | |
212 | * Revision 1.36.4.29 1997/05/12 11:30:00 daniel | |
213 | * Merge of Bentson's and Daniel's version 1.36.4.28. | |
214 | * Corrects bug in cy_detect_pci: check if there are more | |
215 | * ports than the number of static structs allocated. | |
216 | * Warning message during initialization if this driver is | |
217 | * used with the new generation of cycladesZ boards. Those | |
218 | * will be supported only in next release of the driver. | |
219 | * Corrects bug in cy_detect_pci and cy_detect_isa that | |
220 | * returned wrong number of VALID boards, when a cyclomY | |
221 | * was found with no serial modules connected. | |
222 | * Changes to use current (2.1.x) kernel subroutine names | |
223 | * and created macros for compilation with 2.0.x kernel, | |
224 | * instead of the other way around. | |
225 | * | |
226 | * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson | |
227 | * Change queue_task_irq_off to queue_task_irq. | |
228 | * The inline function queue_task_irq_off (tqueue.h) | |
229 | * was removed from latest releases of 2.1.x kernel. | |
230 | * Use of macro __init to mark the initialization | |
231 | * routines, so memory can be reused. | |
232 | * Also incorporate implementation of critical region | |
233 | * in function cleanup_module() created by anonymous | |
234 | * linuxer. | |
235 | * | |
236 | * Revision 1.36.4.28 1997/04/25 16:00:00 daniel | |
237 | * Change to support new firmware that solves DCD problem: | |
238 | * application could fail to receive SIGHUP signal when DCD | |
239 | * varying too fast. | |
240 | * | |
241 | * Revision 1.36.4.27 1997/03/26 10:30:00 daniel | |
242 | * Changed for support linux versions 2.1.X. | |
243 | * Backward compatible with linux versions 2.0.X. | |
244 | * Corrected illegal use of filler field in | |
245 | * CH_CTRL struct. | |
246 | * Deleted some debug messages. | |
247 | * | |
248 | * Revision 1.36.4.26 1997/02/27 12:00:00 daniel | |
249 | * Included check for NULL tty pointer in cyz_poll. | |
250 | * | |
251 | * Revision 1.36.4.25 1997/02/26 16:28:30 bentson | |
252 | * Bill Foster at Blarg! Online services noticed that | |
253 | * some of the switch elements of -Z modem control | |
254 | * lacked a closing "break;" | |
255 | * | |
256 | * Revision 1.36.4.24 1997/02/24 11:00:00 daniel | |
257 | * Changed low water threshold for buffer xmit_buf | |
258 | * | |
259 | * Revision 1.36.4.23 1996/12/02 21:50:16 bentson | |
260 | * Marcio provided fix to modem status fetch for -Z | |
261 | * | |
262 | * Revision 1.36.4.22 1996/10/28 22:41:17 bentson | |
263 | * improve mapping of -Z control page (thanks to Steve | |
264 | * Price <stevep@fa.tdktca.com> for help on this) | |
265 | * | |
266 | * Revision 1.36.4.21 1996/09/10 17:00:10 bentson | |
267 | * shift from CPU-bound to memcopy in cyz_polling operation | |
268 | * | |
269 | * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson | |
270 | * Added support to set and report higher speeds. | |
271 | * | |
272 | * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito | |
273 | * Some fixes in the HW flow control for the BETA release. | |
274 | * Don't try to register the IRQ. | |
275 | * | |
276 | * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson | |
277 | * make sure "cyc" appears in all kernel messages; all soft interrupts | |
278 | * handled by same routine; recognize out-of-band reception; comment | |
279 | * out some diagnostic messages; leave RTS/CTS flow control to hardware; | |
33430dc5 | 280 | * fix race condition in -Z buffer management; only -Y needs to explicitly |
1da177e4 LT |
281 | * flush chars; tidy up some startup messages; |
282 | * | |
283 | * Revision 1.36.4.18 1996/07/25 18:57:31 bentson | |
284 | * shift MOD_INC_USE_COUNT location to match | |
285 | * serial.c; purge some diagnostic messages; | |
286 | * | |
287 | * Revision 1.36.4.17 1996/07/25 18:01:08 bentson | |
288 | * enable modem status messages and fetch & process them; note | |
289 | * time of last activity type for each port; set_line_char now | |
290 | * supports more than line 0 and treats 0 baud correctly; | |
291 | * get_modem_info senses rs_status; | |
292 | * | |
293 | * Revision 1.36.4.16 1996/07/20 08:43:15 bentson | |
294 | * barely works--now's time to turn on | |
295 | * more features 'til it breaks | |
296 | * | |
297 | * Revision 1.36.4.15 1996/07/19 22:30:06 bentson | |
298 | * check more -Z board status; shorten boot message | |
299 | * | |
300 | * Revision 1.36.4.14 1996/07/19 22:20:37 bentson | |
301 | * fix reference to ch_ctrl in startup; verify return | |
302 | * values from cyz_issue_cmd and cyz_update_channel; | |
303 | * more stuff to get modem control correct; | |
304 | * | |
305 | * Revision 1.36.4.13 1996/07/11 19:53:33 bentson | |
306 | * more -Z stuff folded in; re-order changes to put -Z stuff | |
307 | * after -Y stuff (to make changes clearer) | |
308 | * | |
309 | * Revision 1.36.4.12 1996/07/11 15:40:55 bentson | |
310 | * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. | |
311 | * Add code to send break. Clear firmware ID word at startup (so | |
312 | * that other code won't talk to inactive board). | |
313 | * | |
314 | * Revision 1.36.4.11 1996/07/09 05:28:29 bentson | |
315 | * add code for -Z in set_line_char | |
316 | * | |
317 | * Revision 1.36.4.10 1996/07/08 19:28:37 bentson | |
318 | * fold more -Z stuff (or in some cases, error messages) | |
319 | * into driver; add text to "don't know what to do" messages. | |
320 | * | |
321 | * Revision 1.36.4.9 1996/07/08 18:38:38 bentson | |
322 | * moved compile-time flags near top of file; cosmetic changes | |
323 | * to narrow text (to allow 2-up printing); changed many declarations | |
324 | * to "static" to limit external symbols; shuffled code order to | |
325 | * coalesce -Y and -Z specific code, also to put internal functions | |
326 | * in order of tty_driver structure; added code to recognize -Z | |
327 | * ports (and for moment, do nothing or report error); add cy_startup | |
328 | * to parse boot command line for extra base addresses for ISA probes; | |
329 | * | |
330 | * Revision 1.36.4.8 1996/06/25 17:40:19 bentson | |
331 | * reorder some code, fix types of some vars (int vs. long), | |
332 | * add cy_setup to support user declared ISA addresses | |
333 | * | |
334 | * Revision 1.36.4.7 1996/06/21 23:06:18 bentson | |
335 | * dump ioctl based firmware load (it's now a user level | |
336 | * program); ensure uninitialzed ports cannot be used | |
337 | * | |
338 | * Revision 1.36.4.6 1996/06/20 23:17:19 bentson | |
339 | * rename vars and restructure some code | |
340 | * | |
341 | * Revision 1.36.4.5 1996/06/14 15:09:44 bentson | |
342 | * get right status back after boot load | |
343 | * | |
344 | * Revision 1.36.4.4 1996/06/13 19:51:44 bentson | |
345 | * successfully loads firmware | |
346 | * | |
347 | * Revision 1.36.4.3 1996/06/13 06:08:33 bentson | |
348 | * add more of the code for the boot/load ioctls | |
349 | * | |
350 | * Revision 1.36.4.2 1996/06/11 21:00:51 bentson | |
351 | * start to add Z functionality--starting with ioctl | |
352 | * for loading firmware | |
353 | * | |
354 | * Revision 1.36.4.1 1996/06/10 18:03:02 bentson | |
355 | * added code to recognize Z/PCI card at initialization; report | |
356 | * presence, but card is not initialized (because firmware needs | |
357 | * to be loaded) | |
358 | * | |
359 | * Revision 1.36.3.8 1996/06/07 16:29:00 bentson | |
360 | * starting minor number at zero; added missing verify_area | |
96de0e25 | 361 | * as noted by Heiko Eißfeldt <heiko@colossus.escape.de> |
1da177e4 LT |
362 | * |
363 | * Revision 1.36.3.7 1996/04/19 21:06:18 bentson | |
364 | * remove unneeded boot message & fix CLOCAL hardware flow | |
365 | * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); | |
366 | * remove unused diagnostic statements; minor 0 is first; | |
367 | * | |
368 | * Revision 1.36.3.6 1996/03/13 13:21:17 marcio | |
369 | * The kernel function vremap (available only in later 1.3.xx kernels) | |
370 | * allows the access to memory addresses above the RAM. This revision | |
371 | * of the driver supports PCI boards below 1Mb (device id 0x100) and | |
372 | * above 1Mb (device id 0x101). | |
373 | * | |
374 | * Revision 1.36.3.5 1996/03/07 15:20:17 bentson | |
375 | * Some global changes to interrupt handling spilled into | |
376 | * this driver--mostly unused arguments in system function | |
377 | * calls. Also added change by Marcio Saito which should | |
378 | * reduce lost interrupts at startup by fast processors. | |
379 | * | |
380 | * Revision 1.36.3.4 1995/11/13 20:45:10 bentson | |
381 | * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed | |
382 | * in 1.3.41 kernel to remove a possible race condition, extend | |
383 | * some error messages, and let the driver run as a loadable module | |
384 | * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a | |
385 | * possible race condition. | |
386 | * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. | |
387 | * | |
388 | * Revision 1.36.3.3 1995/11/13 19:44:48 bentson | |
389 | * Changes by Linus Torvalds in 1.3.33 kernel distribution | |
390 | * required due to reordering of driver initialization. | |
391 | * Drivers are now initialized *after* memory management. | |
392 | * | |
393 | * Revision 1.36.3.2 1995/09/08 22:07:14 bentson | |
394 | * remove printk from ISR; fix typo | |
395 | * | |
396 | * Revision 1.36.3.1 1995/09/01 12:00:42 marcio | |
397 | * Minor fixes in the PCI board support. PCI function calls in | |
398 | * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan | |
399 | * <duncan@okay.com>. "bad serial count" message removed. | |
400 | * | |
401 | * Revision 1.36.3 1995/08/22 09:19:42 marcio | |
402 | * Cyclom-Y/PCI support added. Changes in the cy_init routine and | |
403 | * board initialization. Changes in the boot messages. The driver | |
404 | * supports up to 4 boards and 64 ports by default. | |
405 | * | |
406 | * Revision 1.36.1.4 1995/03/29 06:14:14 bentson | |
407 | * disambiguate between Cyclom-16Y and Cyclom-32Ye; | |
408 | * | |
409 | * Revision 1.36.1.3 1995/03/23 22:15:35 bentson | |
410 | * add missing break in modem control block in ioctl switch statement | |
411 | * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); | |
412 | * | |
413 | * Revision 1.36.1.2 1995/03/22 19:16:22 bentson | |
414 | * make sure CTS flow control is set as soon as possible (thanks | |
415 | * to note from David Lambert <lambert@chesapeake.rps.slb.com>); | |
416 | * | |
417 | * Revision 1.36.1.1 1995/03/13 15:44:43 bentson | |
418 | * initialize defaults for receive threshold and stale data timeout; | |
419 | * cosmetic changes; | |
420 | * | |
421 | * Revision 1.36 1995/03/10 23:33:53 bentson | |
422 | * added support of chips 4-7 in 32 port Cyclom-Ye; | |
423 | * fix cy_interrupt pointer dereference problem | |
424 | * (Joe Portman <baron@aa.net>); | |
425 | * give better error response if open is attempted on non-existent port | |
426 | * (Zachariah Vaum <jchryslr@netcom.com>); | |
427 | * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); | |
428 | * conditional compilation for -16Y on systems with fast, noisy bus; | |
429 | * comment out diagnostic print function; | |
430 | * cleaned up table of base addresses; | |
431 | * set receiver time-out period register to correct value, | |
432 | * set receive threshold to better default values, | |
433 | * set chip timer to more accurate 200 Hz ticking, | |
434 | * add code to monitor and modify receive parameters | |
435 | * (Rik Faith <faith@cs.unc.edu> Nick Simicich | |
436 | * <njs@scifi.emi.net>); | |
437 | * | |
438 | * Revision 1.35 1994/12/16 13:54:18 steffen | |
439 | * additional patch by Marcio Saito for board detection | |
440 | * Accidently left out in 1.34 | |
441 | * | |
442 | * Revision 1.34 1994/12/10 12:37:12 steffen | |
443 | * This is the corrected version as suggested by Marcio Saito | |
444 | * | |
445 | * Revision 1.33 1994/12/01 22:41:18 bentson | |
446 | * add hooks to support more high speeds directly; add tytso | |
447 | * patch regarding CLOCAL wakeups | |
448 | * | |
449 | * Revision 1.32 1994/11/23 19:50:04 bentson | |
450 | * allow direct kernel control of higher signalling rates; | |
451 | * look for cards at additional locations | |
452 | * | |
453 | * Revision 1.31 1994/11/16 04:33:28 bentson | |
454 | * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- | |
455 | * a problem in chars_in_buffer has been resolved by some | |
456 | * small changes; this should yield smoother output | |
457 | * | |
458 | * Revision 1.30 1994/11/16 04:28:05 bentson | |
459 | * Fix from Corey Minyard, Internet: minyard@metronet.com, | |
460 | * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to | |
461 | * cy_hangup that appears to clear up much (all?) of the | |
462 | * DTR glitches; also he's added/cleaned-up diagnostic messages | |
463 | * | |
464 | * Revision 1.29 1994/11/16 04:16:07 bentson | |
465 | * add change proposed by Ralph Sims, ralphs@halcyon.com, to | |
466 | * operate higher speeds in same way as other serial ports; | |
467 | * add more serial ports (for up to two 16-port muxes). | |
468 | * | |
469 | * Revision 1.28 1994/11/04 00:13:16 root | |
470 | * turn off diagnostic messages | |
471 | * | |
472 | * Revision 1.27 1994/11/03 23:46:37 root | |
473 | * bunch of changes to bring driver into greater conformance | |
474 | * with the serial.c driver (looking for missed fixes) | |
475 | * | |
476 | * Revision 1.26 1994/11/03 22:40:36 root | |
477 | * automatic interrupt probing fixed. | |
478 | * | |
479 | * Revision 1.25 1994/11/03 20:17:02 root | |
480 | * start to implement auto-irq | |
481 | * | |
482 | * Revision 1.24 1994/11/03 18:01:55 root | |
483 | * still working on modem signals--trying not to drop DTR | |
484 | * during the getty/login processes | |
485 | * | |
486 | * Revision 1.23 1994/11/03 17:51:36 root | |
487 | * extend baud rate support; set receive threshold as function | |
488 | * of baud rate; fix some problems with RTS/CTS; | |
489 | * | |
490 | * Revision 1.22 1994/11/02 18:05:35 root | |
491 | * changed arguments to udelay to type long to get | |
492 | * delays to be of correct duration | |
493 | * | |
494 | * Revision 1.21 1994/11/02 17:37:30 root | |
495 | * employ udelay (after calibrating loops_per_second earlier | |
496 | * in init/main.c) instead of using home-grown delay routines | |
497 | * | |
498 | * Revision 1.20 1994/11/02 03:11:38 root | |
499 | * cy_chars_in_buffer forces a return value of 0 to let | |
500 | * login work (don't know why it does); some functions | |
501 | * that were returning EFAULT, now executes the code; | |
502 | * more work on deciding when to disable xmit interrupts; | |
503 | * | |
504 | * Revision 1.19 1994/11/01 20:10:14 root | |
505 | * define routine to start transmission interrupts (by enabling | |
506 | * transmit interrupts); directly enable/disable modem interrupts; | |
507 | * | |
508 | * Revision 1.18 1994/11/01 18:40:45 bentson | |
509 | * Don't always enable transmit interrupts in startup; interrupt on | |
510 | * TxMpty instead of TxRdy to help characters get out before shutdown; | |
511 | * restructure xmit interrupt to check for chars first and quit if | |
512 | * none are ready to go; modem status (MXVRx) is upright, _not_ inverted | |
513 | * (to my view); | |
514 | * | |
515 | * Revision 1.17 1994/10/30 04:39:45 bentson | |
516 | * rename serial_driver and callout_driver to cy_serial_driver and | |
517 | * cy_callout_driver to avoid linkage interference; initialize | |
518 | * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port | |
519 | * from cyclades_port structure; add paranoia check to cy_close; | |
520 | * | |
521 | * Revision 1.16 1994/10/30 01:14:33 bentson | |
522 | * change major numbers; add some _early_ return statements; | |
523 | * | |
524 | * Revision 1.15 1994/10/29 06:43:15 bentson | |
525 | * final tidying up for clean compile; enable some error reporting | |
526 | * | |
527 | * Revision 1.14 1994/10/28 20:30:22 Bentson | |
528 | * lots of changes to drag the driver towards the new tty_io | |
529 | * structures and operation. not expected to work, but may | |
530 | * compile cleanly. | |
531 | * | |
532 | * Revision 1.13 1994/07/21 23:08:57 Bentson | |
533 | * add some diagnostic cruft; support 24 lines (for testing | |
534 | * both -8Y and -16Y cards; be more thorough in servicing all | |
535 | * chips during interrupt; add "volatile" a few places to | |
536 | * circumvent compiler optimizations; fix base & offset | |
537 | * computations in block_til_ready (was causing chip 0 to | |
538 | * stop operation) | |
539 | * | |
540 | * Revision 1.12 1994/07/19 16:42:11 Bentson | |
541 | * add some hackery for kernel version 1.1.8; expand | |
542 | * error messages; refine timing for delay loops and | |
543 | * declare loop params volatile | |
544 | * | |
545 | * Revision 1.11 1994/06/11 21:53:10 bentson | |
546 | * get use of save_car right in transmit interrupt service | |
547 | * | |
548 | * Revision 1.10.1.1 1994/06/11 21:31:18 bentson | |
549 | * add some diagnostic printing; try to fix save_car stuff | |
550 | * | |
551 | * Revision 1.10 1994/06/11 20:36:08 bentson | |
552 | * clean up compiler warnings | |
553 | * | |
554 | * Revision 1.9 1994/06/11 19:42:46 bentson | |
555 | * added a bunch of code to support modem signalling | |
556 | * | |
557 | * Revision 1.8 1994/06/11 17:57:07 bentson | |
558 | * recognize break & parity error | |
559 | * | |
560 | * Revision 1.7 1994/06/05 05:51:34 bentson | |
561 | * Reorder baud table to be monotonic; add cli to CP; discard | |
562 | * incoming characters and status if the line isn't open; start to | |
563 | * fold code into cy_throttle; start to port get_serial_info, | |
564 | * set_serial_info, get_modem_info, set_modem_info, and send_break | |
565 | * from serial.c; expand cy_ioctl; relocate and expand config_setup; | |
566 | * get flow control characters from tty struct; invalidate ports w/o | |
567 | * hardware; | |
568 | * | |
569 | * Revision 1.6 1994/05/31 18:42:21 bentson | |
570 | * add a loop-breaker in the interrupt service routine; | |
571 | * note when port is initialized so that it can be shut | |
572 | * down under the right conditions; receive works without | |
573 | * any obvious errors | |
574 | * | |
575 | * Revision 1.5 1994/05/30 00:55:02 bentson | |
576 | * transmit works without obvious errors | |
577 | * | |
578 | * Revision 1.4 1994/05/27 18:46:27 bentson | |
579 | * incorporated more code from lib_y.c; can now print short | |
580 | * strings under interrupt control to port zero; seems to | |
581 | * select ports/channels/lines correctly | |
582 | * | |
583 | * Revision 1.3 1994/05/25 22:12:44 bentson | |
584 | * shifting from multi-port on a card to proper multiplexor | |
585 | * data structures; added skeletons of most routines | |
586 | * | |
587 | * Revision 1.2 1994/05/19 13:21:43 bentson | |
588 | * start to crib from other sources | |
589 | * | |
590 | */ | |
591 | ||
c8e1693a | 592 | #define CY_VERSION "2.5" |
096dcfce | 593 | |
1da177e4 LT |
594 | /* If you need to install more boards than NR_CARDS, change the constant |
595 | in the definition below. No other change is necessary to support up to | |
596 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
597 | ||
02f1175c | 598 | #define NR_CARDS 4 |
1da177e4 LT |
599 | |
600 | /* | |
601 | If the total number of ports is larger than NR_PORTS, change this | |
602 | constant in the definition below. No other change is necessary to | |
603 | support more boards/ports. */ | |
604 | ||
02f1175c | 605 | #define NR_PORTS 256 |
1da177e4 | 606 | |
1da177e4 LT |
607 | #define ZO_V1 0 |
608 | #define ZO_V2 1 | |
609 | #define ZE_V1 2 | |
610 | ||
611 | #define SERIAL_PARANOIA_CHECK | |
612 | #undef CY_DEBUG_OPEN | |
613 | #undef CY_DEBUG_THROTTLE | |
614 | #undef CY_DEBUG_OTHER | |
615 | #undef CY_DEBUG_IO | |
616 | #undef CY_DEBUG_COUNT | |
617 | #undef CY_DEBUG_DTR | |
618 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
619 | #undef CY_DEBUG_INTERRUPTS | |
620 | #undef CY_16Y_HACK | |
621 | #undef CY_ENABLE_MONITORING | |
622 | #undef CY_PCI_DEBUG | |
623 | ||
1da177e4 | 624 | /* |
15ed6cc0 | 625 | * Include section |
1da177e4 | 626 | */ |
1da177e4 LT |
627 | #include <linux/module.h> |
628 | #include <linux/errno.h> | |
629 | #include <linux/signal.h> | |
630 | #include <linux/sched.h> | |
631 | #include <linux/timer.h> | |
632 | #include <linux/interrupt.h> | |
633 | #include <linux/tty.h> | |
33f0f88f | 634 | #include <linux/tty_flip.h> |
1da177e4 LT |
635 | #include <linux/serial.h> |
636 | #include <linux/major.h> | |
637 | #include <linux/string.h> | |
638 | #include <linux/fcntl.h> | |
639 | #include <linux/ptrace.h> | |
640 | #include <linux/cyclades.h> | |
641 | #include <linux/mm.h> | |
642 | #include <linux/ioport.h> | |
643 | #include <linux/init.h> | |
644 | #include <linux/delay.h> | |
645 | #include <linux/spinlock.h> | |
646 | #include <linux/bitops.h> | |
054f5b0a | 647 | #include <linux/firmware.h> |
9f56fad7 | 648 | #include <linux/device.h> |
1da177e4 LT |
649 | |
650 | #include <asm/system.h> | |
15ed6cc0 | 651 | #include <linux/io.h> |
1da177e4 | 652 | #include <asm/irq.h> |
15ed6cc0 | 653 | #include <linux/uaccess.h> |
1da177e4 | 654 | |
1da177e4 LT |
655 | #include <linux/kernel.h> |
656 | #include <linux/pci.h> | |
657 | ||
658 | #include <linux/stat.h> | |
659 | #include <linux/proc_fs.h> | |
444697d6 | 660 | #include <linux/seq_file.h> |
1da177e4 | 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 | 664 | |
1da177e4 LT |
665 | #ifndef SERIAL_XMIT_SIZE |
666 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
667 | #endif | |
668 | #define WAKEUP_CHARS 256 | |
669 | ||
670 | #define STD_COM_FLAGS (0) | |
671 | ||
054f5b0a JS |
672 | /* firmware stuff */ |
673 | #define ZL_MAX_BLOCKS 16 | |
674 | #define DRIVER_VERSION 0x02010203 | |
675 | #define RAM_SIZE 0x80000 | |
676 | ||
054f5b0a JS |
677 | enum zblock_type { |
678 | ZBLOCK_PRG = 0, | |
679 | ZBLOCK_FPGA = 1 | |
680 | }; | |
681 | ||
682 | struct zfile_header { | |
683 | char name[64]; | |
684 | char date[32]; | |
685 | char aux[32]; | |
686 | u32 n_config; | |
687 | u32 config_offset; | |
688 | u32 n_blocks; | |
689 | u32 block_offset; | |
690 | u32 reserved[9]; | |
691 | } __attribute__ ((packed)); | |
692 | ||
693 | struct zfile_config { | |
694 | char name[64]; | |
695 | u32 mailbox; | |
696 | u32 function; | |
697 | u32 n_blocks; | |
698 | u32 block_list[ZL_MAX_BLOCKS]; | |
699 | } __attribute__ ((packed)); | |
700 | ||
701 | struct zfile_block { | |
702 | u32 type; | |
703 | u32 file_offset; | |
704 | u32 ram_offset; | |
705 | u32 size; | |
706 | } __attribute__ ((packed)); | |
707 | ||
1da177e4 LT |
708 | static struct tty_driver *cy_serial_driver; |
709 | ||
710 | #ifdef CONFIG_ISA | |
711 | /* This is the address lookup table. The driver will probe for | |
712 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
713 | driver to probe addresses at a different address, add it to | |
714 | this table. If the driver is probing some other board and | |
715 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
716 | */ |
717 | ||
718 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
719 | 0xD0000, |
720 | 0xD2000, | |
721 | 0xD4000, | |
722 | 0xD6000, | |
723 | 0xD8000, | |
724 | 0xDA000, | |
725 | 0xDC000, | |
726 | 0xDE000, | |
727 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 728 | }; |
02f1175c | 729 | |
fe971071 | 730 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 LT |
731 | |
732 | #ifdef MODULE | |
3046d50e JS |
733 | static long maddr[NR_CARDS]; |
734 | static int irq[NR_CARDS]; | |
1da177e4 LT |
735 | |
736 | module_param_array(maddr, long, NULL, 0); | |
737 | module_param_array(irq, int, NULL, 0); | |
738 | #endif | |
739 | ||
02f1175c | 740 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
741 | |
742 | /* This is the per-card data structure containing address, irq, number of | |
743 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
744 | */ | |
745 | static struct cyclades_card cy_card[NR_CARDS]; | |
746 | ||
02f1175c | 747 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 748 | |
1da177e4 LT |
749 | /* |
750 | * This is used to look up the divisor speeds and the timeouts | |
751 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 752 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
753 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
754 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
755 | * HI VHI | |
756 | * 20 | |
757 | */ | |
758 | static int baud_table[] = { | |
02f1175c JS |
759 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
760 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
761 | 230400, 0 | |
762 | }; | |
763 | ||
764 | static char baud_co_25[] = { /* 25 MHz clock option table */ | |
765 | /* value => 00 01 02 03 04 */ | |
766 | /* divide by 8 32 128 512 2048 */ | |
767 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
768 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
769 | }; | |
770 | ||
771 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ | |
772 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, | |
773 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
774 | }; | |
775 | ||
776 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ | |
777 | /* value => 00 01 02 03 04 */ | |
778 | /* divide by 8 32 128 512 2048 */ | |
779 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
780 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
781 | 0x00 | |
782 | }; | |
783 | ||
784 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ | |
785 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, | |
786 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
787 | 0x21 | |
788 | }; | |
789 | ||
790 | static char baud_cor3[] = { /* receive threshold */ | |
791 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
792 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
793 | 0x07 | |
794 | }; | |
1da177e4 LT |
795 | |
796 | /* | |
797 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
798 | * The cyclades_port structure member rflow and the vector rflow_thr |
799 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
800 | * data loss even when the system interrupt latency is too high. These flags | |
801 | * are to be used only with very special applications. Setting these flags | |
802 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
803 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
804 | * cables. |
805 | */ | |
806 | ||
02f1175c JS |
807 | static char rflow_thr[] = { /* rflow threshold */ |
808 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
809 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
810 | 0x0a | |
811 | }; | |
1da177e4 LT |
812 | |
813 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
814 | * address order. This look-up table overcomes that problem. | |
815 | */ | |
02f1175c JS |
816 | static int cy_chip_offset[] = { 0x0000, |
817 | 0x0400, | |
818 | 0x0800, | |
819 | 0x0C00, | |
820 | 0x0200, | |
821 | 0x0600, | |
822 | 0x0A00, | |
823 | 0x0E00 | |
824 | }; | |
1da177e4 LT |
825 | |
826 | /* PCI related definitions */ | |
827 | ||
1da177e4 | 828 | #ifdef CONFIG_PCI |
893de2df | 829 | static struct pci_device_id cy_pci_dev_id[] __devinitdata = { |
15ed6cc0 AC |
830 | /* PCI < 1Mb */ |
831 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
832 | /* PCI > 1Mb */ | |
833 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
834 | /* 4Y PCI < 1Mb */ | |
835 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
836 | /* 4Y PCI > 1Mb */ | |
837 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
838 | /* 8Y PCI < 1Mb */ | |
839 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
840 | /* 8Y PCI > 1Mb */ | |
841 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
842 | /* Z PCI < 1Mb */ | |
843 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
844 | /* Z PCI > 1Mb */ | |
845 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 846 | { } /* end of table */ |
02f1175c | 847 | }; |
893de2df | 848 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
849 | #endif |
850 | ||
851 | static void cy_start(struct tty_struct *); | |
852 | static void set_line_char(struct cyclades_port *); | |
1a86b5e3 | 853 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
854 | #ifdef CONFIG_ISA |
855 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 856 | #endif /* CONFIG_ISA */ |
1da177e4 | 857 | |
1da177e4 LT |
858 | #ifndef CONFIG_CYZ_INTR |
859 | static void cyz_poll(unsigned long); | |
860 | ||
861 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
862 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
863 | ||
8d06afab | 864 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 865 | |
02f1175c | 866 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
867 | static void cyz_rx_restart(unsigned long); |
868 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 869 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 870 | |
2693f485 JS |
871 | static inline bool cy_is_Z(struct cyclades_card *card) |
872 | { | |
873 | return card->num_chips == (unsigned int)-1; | |
874 | } | |
875 | ||
876 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
877 | { | |
878 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
879 | } | |
880 | ||
881 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
882 | { | |
883 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
884 | } | |
885 | ||
886 | static inline bool cyz_is_loaded(struct cyclades_card *card) | |
887 | { | |
888 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
889 | ||
890 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
891 | readl(&fw_id->signature) == ZFIRM_ID; | |
892 | } | |
893 | ||
02f1175c JS |
894 | static inline int serial_paranoia_check(struct cyclades_port *info, |
895 | char *name, const char *routine) | |
1da177e4 LT |
896 | { |
897 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 898 | if (!info) { |
21719191 JS |
899 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
900 | "in %s\n", name, routine); | |
02f1175c JS |
901 | return 1; |
902 | } | |
903 | ||
02f1175c | 904 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
905 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
906 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
907 | return 1; |
908 | } | |
1da177e4 | 909 | #endif |
02f1175c JS |
910 | return 0; |
911 | } /* serial_paranoia_check */ | |
1da177e4 | 912 | |
1da177e4 LT |
913 | /***********************************************************/ |
914 | /********* Start of block of Cyclom-Y specific code ********/ | |
915 | ||
916 | /* This routine waits up to 1000 micro-seconds for the previous | |
917 | command to the Cirrus chip to complete and then issues the | |
918 | new command. An error is returned if the previous command | |
919 | didn't finish within the time limit. | |
920 | ||
921 | This function is only called from inside spinlock-protected code. | |
922 | */ | |
15ed6cc0 | 923 | static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index) |
1da177e4 | 924 | { |
ad39c300 | 925 | unsigned int i; |
1da177e4 | 926 | |
02f1175c JS |
927 | /* Check to see that the previous command has completed */ |
928 | for (i = 0; i < 100; i++) { | |
15ed6cc0 | 929 | if (readb(base_addr + (CyCCR << index)) == 0) |
02f1175c | 930 | break; |
02f1175c | 931 | udelay(10L); |
1da177e4 | 932 | } |
02f1175c JS |
933 | /* if the CCR never cleared, the previous command |
934 | didn't finish within the "reasonable time" */ | |
935 | if (i == 100) | |
096dcfce | 936 | return -1; |
1da177e4 | 937 | |
02f1175c JS |
938 | /* Issue the new command */ |
939 | cy_writeb(base_addr + (CyCCR << index), cmd); | |
1da177e4 | 940 | |
096dcfce | 941 | return 0; |
02f1175c | 942 | } /* cyy_issue_cmd */ |
1da177e4 LT |
943 | |
944 | #ifdef CONFIG_ISA | |
945 | /* ISA interrupt detection code */ | |
15ed6cc0 | 946 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 947 | { |
02f1175c JS |
948 | int irq; |
949 | unsigned long irqs, flags; | |
950 | int save_xir, save_car; | |
951 | int index = 0; /* IRQ probing is only for ISA */ | |
952 | ||
953 | /* forget possible initially masked and pending IRQ */ | |
954 | irq = probe_irq_off(probe_irq_on()); | |
955 | ||
956 | /* Clear interrupts on the board first */ | |
957 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
958 | /* Cy_ClrIntr is 0x1800 */ | |
959 | ||
960 | irqs = probe_irq_on(); | |
961 | /* Wait ... */ | |
962 | udelay(5000L); | |
963 | ||
964 | /* Enable the Tx interrupts on the CD1400 */ | |
965 | local_irq_save(flags); | |
966 | cy_writeb(address + (CyCAR << index), 0); | |
967 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); | |
968 | ||
969 | cy_writeb(address + (CyCAR << index), 0); | |
970 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 971 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
972 | local_irq_restore(flags); |
973 | ||
974 | /* Wait ... */ | |
975 | udelay(5000L); | |
976 | ||
977 | /* Check which interrupt is in use */ | |
978 | irq = probe_irq_off(irqs); | |
979 | ||
980 | /* Clean up */ | |
db05c3b1 JS |
981 | save_xir = (u_char) readb(address + (CyTIR << index)); |
982 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
983 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
984 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 985 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
986 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
987 | cy_writeb(address + (CyCAR << index), (save_car)); | |
988 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
989 | /* Cy_ClrIntr is 0x1800 */ | |
990 | ||
991 | return (irq > 0) ? irq : 0; | |
1da177e4 | 992 | } |
02f1175c | 993 | #endif /* CONFIG_ISA */ |
1da177e4 | 994 | |
ce97a097 JS |
995 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
996 | void __iomem *base_addr) | |
e941027f JS |
997 | { |
998 | struct cyclades_port *info; | |
999 | struct tty_struct *tty; | |
65f76a82 JS |
1000 | int len, index = cinfo->bus_index; |
1001 | u8 save_xir, channel, save_car, data, char_count; | |
e941027f | 1002 | |
e941027f | 1003 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 1004 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 1005 | #endif |
ce97a097 | 1006 | /* determine the channel & change to that context */ |
65f76a82 JS |
1007 | save_xir = readb(base_addr + (CyRIR << index)); |
1008 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
1009 | info = &cinfo->ports[channel + chip * 4]; |
1010 | save_car = readb(base_addr + (CyCAR << index)); | |
1011 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
1012 | ||
1013 | /* if there is nowhere to put the data, discard it */ | |
77451e53 | 1014 | if (info->port.tty == NULL) { |
65f76a82 JS |
1015 | if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == |
1016 | CyIVRRxEx) { /* exception */ | |
ce97a097 JS |
1017 | data = readb(base_addr + (CyRDSR << index)); |
1018 | } else { /* normal character reception */ | |
1019 | char_count = readb(base_addr + (CyRDCR << index)); | |
1020 | while (char_count--) | |
db05c3b1 | 1021 | data = readb(base_addr + (CyRDSR << index)); |
ce97a097 JS |
1022 | } |
1023 | goto end; | |
1024 | } | |
1025 | /* there is an open port for this data */ | |
77451e53 | 1026 | tty = info->port.tty; |
65f76a82 JS |
1027 | if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == |
1028 | CyIVRRxEx) { /* exception */ | |
ce97a097 JS |
1029 | data = readb(base_addr + (CyRDSR << index)); |
1030 | ||
1031 | /* For statistics only */ | |
1032 | if (data & CyBREAK) | |
1033 | info->icount.brk++; | |
1034 | else if (data & CyFRAME) | |
1035 | info->icount.frame++; | |
1036 | else if (data & CyPARITY) | |
1037 | info->icount.parity++; | |
1038 | else if (data & CyOVERRUN) | |
1039 | info->icount.overrun++; | |
1040 | ||
1041 | if (data & info->ignore_status_mask) { | |
1042 | info->icount.rx++; | |
ce97a097 JS |
1043 | return; |
1044 | } | |
1045 | if (tty_buffer_request_room(tty, 1)) { | |
1046 | if (data & info->read_status_mask) { | |
1047 | if (data & CyBREAK) { | |
1048 | tty_insert_flip_char(tty, | |
1049 | readb(base_addr + (CyRDSR << | |
1050 | index)), TTY_BREAK); | |
1051 | info->icount.rx++; | |
77451e53 | 1052 | if (info->port.flags & ASYNC_SAK) |
ce97a097 JS |
1053 | do_SAK(tty); |
1054 | } else if (data & CyFRAME) { | |
15ed6cc0 | 1055 | tty_insert_flip_char(tty, |
ce97a097 JS |
1056 | readb(base_addr + (CyRDSR << |
1057 | index)), TTY_FRAME); | |
1058 | info->icount.rx++; | |
1059 | info->idle_stats.frame_errs++; | |
1060 | } else if (data & CyPARITY) { | |
1061 | /* Pieces of seven... */ | |
1062 | tty_insert_flip_char(tty, | |
1063 | readb(base_addr + (CyRDSR << | |
1064 | index)), TTY_PARITY); | |
1065 | info->icount.rx++; | |
1066 | info->idle_stats.parity_errs++; | |
1067 | } else if (data & CyOVERRUN) { | |
1068 | tty_insert_flip_char(tty, 0, | |
1069 | TTY_OVERRUN); | |
1070 | info->icount.rx++; | |
1071 | /* If the flip buffer itself is | |
1072 | overflowing, we still lose | |
1073 | the next incoming character. | |
1074 | */ | |
1075 | tty_insert_flip_char(tty, | |
1076 | readb(base_addr + (CyRDSR << | |
1077 | index)), TTY_FRAME); | |
02f1175c | 1078 | info->icount.rx++; |
02f1175c | 1079 | info->idle_stats.overruns++; |
ce97a097 JS |
1080 | /* These two conditions may imply */ |
1081 | /* a normal read should be done. */ | |
1082 | /* } else if(data & CyTIMEOUT) { */ | |
1083 | /* } else if(data & CySPECHAR) { */ | |
1084 | } else { | |
1085 | tty_insert_flip_char(tty, 0, | |
1086 | TTY_NORMAL); | |
1087 | info->icount.rx++; | |
02f1175c | 1088 | } |
ce97a097 JS |
1089 | } else { |
1090 | tty_insert_flip_char(tty, 0, TTY_NORMAL); | |
1091 | info->icount.rx++; | |
1092 | } | |
1093 | } else { | |
1094 | /* there was a software buffer overrun and nothing | |
1095 | * could be done about it!!! */ | |
1096 | info->icount.buf_overrun++; | |
1097 | info->idle_stats.overruns++; | |
1098 | } | |
1099 | } else { /* normal character reception */ | |
1100 | /* load # chars available from the chip */ | |
1101 | char_count = readb(base_addr + (CyRDCR << index)); | |
e941027f JS |
1102 | |
1103 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
1104 | ++info->mon.int_count; |
1105 | info->mon.char_count += char_count; | |
1106 | if (char_count > info->mon.char_max) | |
1107 | info->mon.char_max = char_count; | |
1108 | info->mon.char_last = char_count; | |
e941027f | 1109 | #endif |
ce97a097 JS |
1110 | len = tty_buffer_request_room(tty, char_count); |
1111 | while (len--) { | |
1112 | data = readb(base_addr + (CyRDSR << index)); | |
1113 | tty_insert_flip_char(tty, data, TTY_NORMAL); | |
1114 | info->idle_stats.recv_bytes++; | |
1115 | info->icount.rx++; | |
e941027f | 1116 | #ifdef CY_16Y_HACK |
ce97a097 | 1117 | udelay(10L); |
e941027f | 1118 | #endif |
e941027f | 1119 | } |
ce97a097 | 1120 | info->idle_stats.recv_idle = jiffies; |
e941027f | 1121 | } |
ce97a097 JS |
1122 | tty_schedule_flip(tty); |
1123 | end: | |
1124 | /* end of service */ | |
1125 | cy_writeb(base_addr + (CyRIR << index), save_xir & 0x3f); | |
1126 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
ce97a097 | 1127 | } |
e941027f | 1128 | |
65f76a82 | 1129 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
1130 | void __iomem *base_addr) |
1131 | { | |
1132 | struct cyclades_port *info; | |
65f76a82 JS |
1133 | int char_count, index = cinfo->bus_index; |
1134 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
1135 | |
1136 | /* Since we only get here when the transmit buffer | |
1137 | is empty, we know we can always stuff a dozen | |
1138 | characters. */ | |
e941027f | 1139 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 1140 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
1141 | #endif |
1142 | ||
ce97a097 | 1143 | /* determine the channel & change to that context */ |
65f76a82 JS |
1144 | save_xir = readb(base_addr + (CyTIR << index)); |
1145 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
1146 | save_car = readb(base_addr + (CyCAR << index)); |
1147 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
1148 | ||
1149 | /* validate the port# (as configured and open) */ | |
1150 | if (channel + chip * 4 >= cinfo->nports) { | |
1151 | cy_writeb(base_addr + (CySRER << index), | |
1152 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); | |
1153 | goto end; | |
1154 | } | |
1155 | info = &cinfo->ports[channel + chip * 4]; | |
77451e53 | 1156 | if (info->port.tty == NULL) { |
ce97a097 JS |
1157 | cy_writeb(base_addr + (CySRER << index), |
1158 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); | |
1159 | goto end; | |
1160 | } | |
02f1175c | 1161 | |
ce97a097 JS |
1162 | /* load the on-chip space for outbound data */ |
1163 | char_count = info->xmit_fifo_size; | |
02f1175c | 1164 | |
ce97a097 JS |
1165 | if (info->x_char) { /* send special char */ |
1166 | outch = info->x_char; | |
1167 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1168 | char_count--; | |
1169 | info->icount.tx++; | |
1170 | info->x_char = 0; | |
1171 | } | |
02f1175c | 1172 | |
ce97a097 JS |
1173 | if (info->breakon || info->breakoff) { |
1174 | if (info->breakon) { | |
1175 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1176 | cy_writeb(base_addr + (CyTDR << index), 0x81); | |
1177 | info->breakon = 0; | |
1178 | char_count -= 2; | |
e941027f | 1179 | } |
ce97a097 JS |
1180 | if (info->breakoff) { |
1181 | cy_writeb(base_addr + (CyTDR << index), 0); | |
1182 | cy_writeb(base_addr + (CyTDR << index), 0x83); | |
1183 | info->breakoff = 0; | |
1184 | char_count -= 2; | |
e941027f | 1185 | } |
ce97a097 | 1186 | } |
02f1175c | 1187 | |
ce97a097 JS |
1188 | while (char_count-- > 0) { |
1189 | if (!info->xmit_cnt) { | |
1190 | if (readb(base_addr + (CySRER << index)) & CyTxMpty) { | |
1191 | cy_writeb(base_addr + (CySRER << index), | |
1192 | readb(base_addr + (CySRER << index)) & | |
02f1175c | 1193 | ~CyTxMpty); |
ce97a097 JS |
1194 | } else { |
1195 | cy_writeb(base_addr + (CySRER << index), | |
1196 | (readb(base_addr + (CySRER << index)) & | |
02f1175c | 1197 | ~CyTxRdy) | CyTxMpty); |
02f1175c | 1198 | } |
ce97a097 JS |
1199 | goto done; |
1200 | } | |
77451e53 | 1201 | if (info->port.xmit_buf == NULL) { |
ce97a097 JS |
1202 | cy_writeb(base_addr + (CySRER << index), |
1203 | readb(base_addr + (CySRER << index)) & | |
02f1175c | 1204 | ~CyTxRdy); |
ce97a097 JS |
1205 | goto done; |
1206 | } | |
77451e53 | 1207 | if (info->port.tty->stopped || info->port.tty->hw_stopped) { |
ce97a097 JS |
1208 | cy_writeb(base_addr + (CySRER << index), |
1209 | readb(base_addr + (CySRER << index)) & | |
02f1175c | 1210 | ~CyTxRdy); |
ce97a097 JS |
1211 | goto done; |
1212 | } | |
1213 | /* Because the Embedded Transmit Commands have been enabled, | |
1214 | * we must check to see if the escape character, NULL, is being | |
1215 | * sent. If it is, we must ensure that there is room for it to | |
1216 | * be doubled in the output stream. Therefore we no longer | |
1217 | * advance the pointer when the character is fetched, but | |
1218 | * rather wait until after the check for a NULL output | |
1219 | * character. This is necessary because there may not be room | |
1220 | * for the two chars needed to send a NULL.) | |
1221 | */ | |
77451e53 | 1222 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
1223 | if (outch) { |
1224 | info->xmit_cnt--; | |
1225 | info->xmit_tail = (info->xmit_tail + 1) & | |
1226 | (SERIAL_XMIT_SIZE - 1); | |
1227 | cy_writeb(base_addr + (CyTDR << index), outch); | |
1228 | info->icount.tx++; | |
1229 | } else { | |
1230 | if (char_count > 1) { | |
02f1175c JS |
1231 | info->xmit_cnt--; |
1232 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 1233 | (SERIAL_XMIT_SIZE - 1); |
02f1175c | 1234 | cy_writeb(base_addr + (CyTDR << index), outch); |
ce97a097 | 1235 | cy_writeb(base_addr + (CyTDR << index), 0); |
02f1175c | 1236 | info->icount.tx++; |
ce97a097 | 1237 | char_count--; |
02f1175c | 1238 | } |
e941027f | 1239 | } |
e941027f JS |
1240 | } |
1241 | ||
ce97a097 | 1242 | done: |
77451e53 | 1243 | tty_wakeup(info->port.tty); |
ce97a097 JS |
1244 | end: |
1245 | /* end of service */ | |
1246 | cy_writeb(base_addr + (CyTIR << index), save_xir & 0x3f); | |
1247 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
ce97a097 | 1248 | } |
02f1175c | 1249 | |
ce97a097 JS |
1250 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
1251 | void __iomem *base_addr) | |
1252 | { | |
1253 | struct cyclades_port *info; | |
65f76a82 JS |
1254 | int index = cinfo->bus_index; |
1255 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
1256 | |
1257 | /* determine the channel & change to that context */ | |
65f76a82 JS |
1258 | save_xir = readb(base_addr + (CyMIR << index)); |
1259 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
1260 | info = &cinfo->ports[channel + chip * 4]; |
1261 | save_car = readb(base_addr + (CyCAR << index)); | |
1262 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
1263 | ||
1264 | mdm_change = readb(base_addr + (CyMISR << index)); | |
1265 | mdm_status = readb(base_addr + (CyMSVR1 << index)); | |
1266 | ||
77451e53 | 1267 | if (!info->port.tty) |
ce97a097 JS |
1268 | goto end; |
1269 | ||
1270 | if (mdm_change & CyANY_DELTA) { | |
1271 | /* For statistics only */ | |
1272 | if (mdm_change & CyDCD) | |
1273 | info->icount.dcd++; | |
1274 | if (mdm_change & CyCTS) | |
1275 | info->icount.cts++; | |
1276 | if (mdm_change & CyDSR) | |
1277 | info->icount.dsr++; | |
1278 | if (mdm_change & CyRI) | |
1279 | info->icount.rng++; | |
1280 | ||
1281 | wake_up_interruptible(&info->delta_msr_wait); | |
1282 | } | |
1283 | ||
77451e53 | 1284 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
ce97a097 | 1285 | if (!(mdm_status & CyDCD)) { |
77451e53 AC |
1286 | tty_hangup(info->port.tty); |
1287 | info->port.flags &= ~ASYNC_NORMAL_ACTIVE; | |
ce97a097 | 1288 | } |
77451e53 | 1289 | wake_up_interruptible(&info->port.open_wait); |
ce97a097 | 1290 | } |
77451e53 AC |
1291 | if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { |
1292 | if (info->port.tty->hw_stopped) { | |
ce97a097 JS |
1293 | if (mdm_status & CyCTS) { |
1294 | /* cy_start isn't used | |
1295 | because... !!! */ | |
77451e53 | 1296 | info->port.tty->hw_stopped = 0; |
ce97a097 JS |
1297 | cy_writeb(base_addr + (CySRER << index), |
1298 | readb(base_addr + (CySRER << index)) | | |
1299 | CyTxRdy); | |
77451e53 | 1300 | tty_wakeup(info->port.tty); |
02f1175c | 1301 | } |
ce97a097 JS |
1302 | } else { |
1303 | if (!(mdm_status & CyCTS)) { | |
1304 | /* cy_stop isn't used | |
1305 | because ... !!! */ | |
77451e53 | 1306 | info->port.tty->hw_stopped = 1; |
ce97a097 JS |
1307 | cy_writeb(base_addr + (CySRER << index), |
1308 | readb(base_addr + (CySRER << index)) & | |
1309 | ~CyTxRdy); | |
02f1175c | 1310 | } |
e941027f | 1311 | } |
e941027f | 1312 | } |
ce97a097 JS |
1313 | /* if (mdm_change & CyDSR) { |
1314 | } | |
1315 | if (mdm_change & CyRI) { | |
1316 | }*/ | |
1317 | end: | |
1318 | /* end of service */ | |
1319 | cy_writeb(base_addr + (CyMIR << index), save_xir & 0x3f); | |
1320 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
e941027f JS |
1321 | } |
1322 | ||
1da177e4 LT |
1323 | /* The real interrupt service routine is called |
1324 | whenever the card wants its hand held--chars | |
1325 | received, out buffer empty, modem change, etc. | |
1326 | */ | |
02f1175c | 1327 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 1328 | { |
02f1175c | 1329 | int status; |
f7429034 | 1330 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 1331 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 1332 | unsigned int chip, too_many, had_work; |
02f1175c | 1333 | int index; |
02f1175c | 1334 | |
f7429034 | 1335 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 1336 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
1337 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
1338 | irq); | |
1da177e4 | 1339 | #endif |
02f1175c JS |
1340 | return IRQ_NONE; /* spurious interrupt */ |
1341 | } | |
1342 | ||
1343 | card_base_addr = cinfo->base_addr; | |
1344 | index = cinfo->bus_index; | |
1345 | ||
f1e83c6c JS |
1346 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
1347 | if (unlikely(card_base_addr == NULL)) | |
1348 | return IRQ_HANDLED; | |
1349 | ||
02f1175c JS |
1350 | /* This loop checks all chips in the card. Make a note whenever |
1351 | _any_ chip had some work to do, as this is considered an | |
1352 | indication that there will be more to do. Only when no chip | |
1353 | has any work does this outermost loop exit. | |
1354 | */ | |
1355 | do { | |
1356 | had_work = 0; | |
1357 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
1358 | base_addr = cinfo->base_addr + | |
1359 | (cy_chip_offset[chip] << index); | |
1360 | too_many = 0; | |
db05c3b1 | 1361 | while ((status = readb(base_addr + |
02f1175c JS |
1362 | (CySVRR << index))) != 0x00) { |
1363 | had_work++; | |
1364 | /* The purpose of the following test is to ensure that | |
1365 | no chip can monopolize the driver. This forces the | |
1366 | chips to be checked in a round-robin fashion (after | |
1367 | draining each of a bunch (1000) of characters). | |
1368 | */ | |
ce97a097 | 1369 | if (1000 < too_many++) |
02f1175c | 1370 | break; |
1c0a387c | 1371 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
1372 | if (status & CySRReceive) /* rx intr */ |
1373 | cyy_chip_rx(cinfo, chip, base_addr); | |
1374 | if (status & CySRTransmit) /* tx intr */ | |
1375 | cyy_chip_tx(cinfo, chip, base_addr); | |
1376 | if (status & CySRModem) /* modem intr */ | |
1377 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 1378 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
1379 | } |
1380 | } | |
1381 | } while (had_work); | |
1382 | ||
1383 | /* clear interrupts */ | |
1384 | spin_lock(&cinfo->card_lock); | |
1385 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
1386 | /* Cy_ClrIntr is 0x1800 */ | |
1387 | spin_unlock(&cinfo->card_lock); | |
1388 | return IRQ_HANDLED; | |
1389 | } /* cyy_interrupt */ | |
1da177e4 LT |
1390 | |
1391 | /***********************************************************/ | |
1392 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 1393 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
1394 | /***********************************************************/ |
1395 | ||
1396 | static int | |
02f1175c | 1397 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 1398 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 1399 | { |
02f1175c JS |
1400 | struct FIRM_ID __iomem *firm_id; |
1401 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1402 | struct BOARD_CTRL __iomem *board_ctrl; | |
1403 | unsigned long loc_doorbell; | |
1404 | ||
1405 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
db05c3b1 | 1406 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1407 | board_ctrl = &zfw_ctrl->board_ctrl; |
1408 | ||
97e87f8e | 1409 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
1410 | if (loc_doorbell) { |
1411 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
1412 | *channel = readl(&board_ctrl->fwcmd_channel); |
1413 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 1414 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
1415 | return 1; |
1416 | } | |
1417 | return 0; | |
1418 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
1419 | |
1420 | static int | |
02f1175c | 1421 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 1422 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 1423 | { |
02f1175c JS |
1424 | struct FIRM_ID __iomem *firm_id; |
1425 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1426 | struct BOARD_CTRL __iomem *board_ctrl; | |
1a86b5e3 | 1427 | __u32 __iomem *pci_doorbell; |
65f76a82 | 1428 | unsigned int index; |
02f1175c JS |
1429 | |
1430 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
2693f485 | 1431 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 1432 | return -1; |
15ed6cc0 | 1433 | |
db05c3b1 | 1434 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1435 | board_ctrl = &zfw_ctrl->board_ctrl; |
1436 | ||
1437 | index = 0; | |
97e87f8e | 1438 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 1439 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 1440 | if (index++ == 1000) |
db05c3b1 | 1441 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
1442 | udelay(50L); |
1443 | } | |
1444 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
1445 | cy_writel(&board_ctrl->hcmd_param, param); | |
1446 | cy_writel(pci_doorbell, (long)cmd); | |
1447 | ||
096dcfce | 1448 | return 0; |
02f1175c | 1449 | } /* cyz_issue_cmd */ |
1da177e4 | 1450 | |
65f76a82 | 1451 | static void cyz_handle_rx(struct cyclades_port *info, |
ad39c300 | 1452 | struct BUF_CTRL __iomem *buf_ctrl) |
1da177e4 | 1453 | { |
875b206b | 1454 | struct cyclades_card *cinfo = info->card; |
77451e53 | 1455 | struct tty_struct *tty = info->port.tty; |
65f76a82 | 1456 | unsigned int char_count; |
02f1175c | 1457 | int len; |
1da177e4 | 1458 | #ifdef BLOCKMOVE |
ce71b0ff | 1459 | unsigned char *buf; |
1da177e4 | 1460 | #else |
02f1175c | 1461 | char data; |
1da177e4 | 1462 | #endif |
ad39c300 | 1463 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 1464 | |
db05c3b1 JS |
1465 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
1466 | rx_put = readl(&buf_ctrl->rx_put); | |
1467 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
1468 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
1469 | if (rx_put >= rx_get) |
1470 | char_count = rx_put - rx_get; | |
1471 | else | |
1472 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 1473 | |
02f1175c | 1474 | if (char_count) { |
1da177e4 | 1475 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
1476 | info->mon.int_count++; |
1477 | info->mon.char_count += char_count; | |
1478 | if (char_count > info->mon.char_max) | |
1479 | info->mon.char_max = char_count; | |
1480 | info->mon.char_last = char_count; | |
1da177e4 | 1481 | #endif |
f7429034 | 1482 | if (tty == NULL) { |
02f1175c JS |
1483 | /* flush received characters */ |
1484 | new_rx_get = (new_rx_get + char_count) & | |
1485 | (rx_bufsize - 1); | |
1486 | info->rflush_count++; | |
1487 | } else { | |
1da177e4 | 1488 | #ifdef BLOCKMOVE |
02f1175c JS |
1489 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
1490 | for performance, but because of buffer boundaries, there | |
1491 | may be several steps to the operation */ | |
ce71b0ff JS |
1492 | while (1) { |
1493 | len = tty_prepare_flip_string(tty, &buf, | |
1494 | char_count); | |
1495 | if (!len) | |
1496 | break; | |
1497 | ||
1498 | len = min_t(unsigned int, min(len, char_count), | |
1499 | rx_bufsize - new_rx_get); | |
1500 | ||
1501 | memcpy_fromio(buf, cinfo->base_addr + | |
1502 | rx_bufaddr + new_rx_get, len); | |
1503 | ||
1504 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 1505 | (rx_bufsize - 1); |
ce71b0ff JS |
1506 | char_count -= len; |
1507 | info->icount.rx += len; | |
1508 | info->idle_stats.recv_bytes += len; | |
02f1175c | 1509 | } |
1da177e4 | 1510 | #else |
02f1175c JS |
1511 | len = tty_buffer_request_room(tty, char_count); |
1512 | while (len--) { | |
db05c3b1 | 1513 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c | 1514 | new_rx_get); |
15ed6cc0 AC |
1515 | new_rx_get = (new_rx_get + 1) & |
1516 | (rx_bufsize - 1); | |
02f1175c JS |
1517 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
1518 | info->idle_stats.recv_bytes++; | |
1519 | info->icount.rx++; | |
1520 | } | |
1da177e4 LT |
1521 | #endif |
1522 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1523 | /* Recalculate the number of chars in the RX buffer and issue |
1524 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1525 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1526 | if (rx_put >= rx_get) |
1527 | char_count = rx_put - rx_get; | |
1528 | else | |
1529 | char_count = rx_put - rx_get + rx_bufsize; | |
65f76a82 | 1530 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
ebafeeff JS |
1531 | !timer_pending(&cyz_rx_full_timer[ |
1532 | info->line])) | |
1533 | mod_timer(&cyz_rx_full_timer[info->line], | |
1534 | jiffies + 1); | |
1da177e4 | 1535 | #endif |
02f1175c JS |
1536 | info->idle_stats.recv_idle = jiffies; |
1537 | tty_schedule_flip(tty); | |
1538 | } | |
1539 | /* Update rx_get */ | |
1540 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1541 | } |
1da177e4 LT |
1542 | } |
1543 | ||
65f76a82 | 1544 | static void cyz_handle_tx(struct cyclades_port *info, |
ad39c300 | 1545 | struct BUF_CTRL __iomem *buf_ctrl) |
1da177e4 | 1546 | { |
875b206b | 1547 | struct cyclades_card *cinfo = info->card; |
77451e53 | 1548 | struct tty_struct *tty = info->port.tty; |
65f76a82 JS |
1549 | u8 data; |
1550 | unsigned int char_count; | |
1da177e4 | 1551 | #ifdef BLOCKMOVE |
02f1175c | 1552 | int small_count; |
1da177e4 | 1553 | #endif |
ad39c300 | 1554 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1555 | |
02f1175c JS |
1556 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1557 | return; | |
1da177e4 | 1558 | |
db05c3b1 JS |
1559 | tx_get = readl(&buf_ctrl->tx_get); |
1560 | tx_put = readl(&buf_ctrl->tx_put); | |
1561 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1562 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1563 | if (tx_put >= tx_get) |
1564 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1565 | else | |
1566 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1567 | |
02f1175c | 1568 | if (char_count) { |
1da177e4 | 1569 | |
f7429034 | 1570 | if (tty == NULL) |
02f1175c | 1571 | goto ztxdone; |
1da177e4 | 1572 | |
02f1175c JS |
1573 | if (info->x_char) { /* send special char */ |
1574 | data = info->x_char; | |
1da177e4 | 1575 | |
02f1175c JS |
1576 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1577 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1578 | info->x_char = 0; | |
1579 | char_count--; | |
1580 | info->icount.tx++; | |
02f1175c | 1581 | } |
1da177e4 | 1582 | #ifdef BLOCKMOVE |
02f1175c JS |
1583 | while (0 < (small_count = min_t(unsigned int, |
1584 | tx_bufsize - tx_put, min_t(unsigned int, | |
1585 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1586 | min_t(unsigned int, info->xmit_cnt, | |
1587 | char_count))))) { | |
1588 | ||
1589 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1590 | tx_put), | |
77451e53 | 1591 | &info->port.xmit_buf[info->xmit_tail], |
02f1175c JS |
1592 | small_count); |
1593 | ||
1594 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1595 | char_count -= small_count; | |
1596 | info->icount.tx += small_count; | |
1597 | info->xmit_cnt -= small_count; | |
1598 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1599 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1600 | } |
1da177e4 | 1601 | #else |
02f1175c | 1602 | while (info->xmit_cnt && char_count) { |
77451e53 | 1603 | data = info->port.xmit_buf[info->xmit_tail]; |
02f1175c JS |
1604 | info->xmit_cnt--; |
1605 | info->xmit_tail = (info->xmit_tail + 1) & | |
1606 | (SERIAL_XMIT_SIZE - 1); | |
1607 | ||
1608 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1609 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1610 | char_count--; | |
1611 | info->icount.tx++; | |
02f1175c | 1612 | } |
1da177e4 | 1613 | #endif |
ebafeeff | 1614 | tty_wakeup(tty); |
7fa57a0c | 1615 | ztxdone: |
02f1175c JS |
1616 | /* Update tx_put */ |
1617 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1618 | } |
1da177e4 LT |
1619 | } |
1620 | ||
02f1175c | 1621 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1622 | { |
02f1175c JS |
1623 | struct tty_struct *tty; |
1624 | struct cyclades_port *info; | |
ad39c300 JS |
1625 | static struct FIRM_ID __iomem *firm_id; |
1626 | static struct ZFW_CTRL __iomem *zfw_ctrl; | |
1627 | static struct BOARD_CTRL __iomem *board_ctrl; | |
1628 | static struct CH_CTRL __iomem *ch_ctrl; | |
1629 | static struct BUF_CTRL __iomem *buf_ctrl; | |
101b8159 | 1630 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1631 | __u8 cmd; |
02f1175c JS |
1632 | int special_count; |
1633 | int delta_count; | |
1634 | ||
1635 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
db05c3b1 | 1636 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 1637 | board_ctrl = &zfw_ctrl->board_ctrl; |
db05c3b1 | 1638 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1639 | |
1640 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1641 | special_count = 0; | |
1642 | delta_count = 0; | |
dd025c0c | 1643 | info = &cinfo->ports[channel]; |
77451e53 | 1644 | tty = info->port.tty; |
15ed6cc0 | 1645 | if (tty == NULL) |
02f1175c | 1646 | continue; |
f7429034 | 1647 | |
02f1175c JS |
1648 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
1649 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
1650 | ||
1651 | switch (cmd) { | |
1652 | case C_CM_PR_ERROR: | |
1653 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1654 | info->icount.rx++; | |
1655 | special_count++; | |
1656 | break; | |
1657 | case C_CM_FR_ERROR: | |
1658 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1659 | info->icount.rx++; | |
1660 | special_count++; | |
1661 | break; | |
1662 | case C_CM_RXBRK: | |
1663 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1664 | info->icount.rx++; | |
1665 | special_count++; | |
1666 | break; | |
1667 | case C_CM_MDCD: | |
1668 | info->icount.dcd++; | |
1669 | delta_count++; | |
77451e53 | 1670 | if (info->port.flags & ASYNC_CHECK_CD) { |
02f1175c | 1671 | if ((fw_ver > 241 ? ((u_long) param) : |
db05c3b1 | 1672 | readl(&ch_ctrl->rs_status)) & |
02f1175c | 1673 | C_RS_DCD) { |
77451e53 | 1674 | wake_up_interruptible(&info->port.open_wait); |
02f1175c | 1675 | } else { |
77451e53 AC |
1676 | tty_hangup(info->port.tty); |
1677 | wake_up_interruptible(&info->port.open_wait); | |
1678 | info->port.flags &= ~ASYNC_NORMAL_ACTIVE; | |
02f1175c JS |
1679 | } |
1680 | } | |
1681 | break; | |
1682 | case C_CM_MCTS: | |
1683 | info->icount.cts++; | |
1684 | delta_count++; | |
1685 | break; | |
1686 | case C_CM_MRI: | |
1687 | info->icount.rng++; | |
1688 | delta_count++; | |
1689 | break; | |
1690 | case C_CM_MDSR: | |
1691 | info->icount.dsr++; | |
1692 | delta_count++; | |
1693 | break; | |
1da177e4 | 1694 | #ifdef Z_WAKE |
02f1175c | 1695 | case C_CM_IOCTLW: |
ebafeeff | 1696 | complete(&info->shutdown_wait); |
02f1175c | 1697 | break; |
1da177e4 LT |
1698 | #endif |
1699 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1700 | case C_CM_RXHIWM: |
1701 | case C_CM_RXNNDT: | |
1702 | case C_CM_INTBACK2: | |
1703 | /* Reception Interrupt */ | |
1da177e4 | 1704 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1705 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1706 | "port %ld\n", info->card, channel); | |
1da177e4 | 1707 | #endif |
65f76a82 | 1708 | cyz_handle_rx(info, buf_ctrl); |
02f1175c JS |
1709 | break; |
1710 | case C_CM_TXBEMPTY: | |
1711 | case C_CM_TXLOWWM: | |
1712 | case C_CM_INTBACK: | |
1713 | /* Transmission Interrupt */ | |
1da177e4 | 1714 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1715 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1716 | "port %ld\n", info->card, channel); | |
1da177e4 | 1717 | #endif |
65f76a82 | 1718 | cyz_handle_tx(info, buf_ctrl); |
02f1175c JS |
1719 | break; |
1720 | #endif /* CONFIG_CYZ_INTR */ | |
1721 | case C_CM_FATAL: | |
1722 | /* should do something with this !!! */ | |
1723 | break; | |
1724 | default: | |
1725 | break; | |
1726 | } | |
1727 | if (delta_count) | |
ebafeeff | 1728 | wake_up_interruptible(&info->delta_msr_wait); |
02f1175c JS |
1729 | if (special_count) |
1730 | tty_schedule_flip(tty); | |
1da177e4 | 1731 | } |
1da177e4 LT |
1732 | } |
1733 | ||
1734 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1735 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1736 | { |
f7429034 | 1737 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1738 | |
2693f485 | 1739 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1740 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1741 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1742 | "(IRQ%d).\n", irq); | |
1da177e4 | 1743 | #endif |
02f1175c JS |
1744 | return IRQ_NONE; |
1745 | } | |
1da177e4 | 1746 | |
02f1175c JS |
1747 | /* Handle the interrupts */ |
1748 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1749 | |
02f1175c JS |
1750 | return IRQ_HANDLED; |
1751 | } /* cyz_interrupt */ | |
1da177e4 | 1752 | |
02f1175c | 1753 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1754 | { |
02f1175c | 1755 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1756 | struct cyclades_card *card = info->card; |
02f1175c | 1757 | int retval; |
875b206b | 1758 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1759 | unsigned long flags; |
1760 | ||
9fa1b3b1 | 1761 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1762 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1763 | if (retval != 0) { |
21719191 | 1764 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1765 | info->line, retval); |
1766 | } | |
9fa1b3b1 | 1767 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1768 | } |
1769 | ||
02f1175c | 1770 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1771 | |
02f1175c | 1772 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1773 | { |
02f1175c JS |
1774 | struct cyclades_card *cinfo; |
1775 | struct cyclades_port *info; | |
1776 | struct tty_struct *tty; | |
c4923b4f JS |
1777 | struct FIRM_ID __iomem *firm_id; |
1778 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
c4923b4f | 1779 | struct BUF_CTRL __iomem *buf_ctrl; |
b7050906 | 1780 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1781 | unsigned int port, card; |
1da177e4 | 1782 | |
02f1175c JS |
1783 | for (card = 0; card < NR_CARDS; card++) { |
1784 | cinfo = &cy_card[card]; | |
1785 | ||
2693f485 | 1786 | if (!cy_is_Z(cinfo)) |
02f1175c | 1787 | continue; |
2693f485 | 1788 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1789 | continue; |
1790 | ||
1791 | firm_id = cinfo->base_addr + ID_ADDRESS; | |
1792 | zfw_ctrl = cinfo->base_addr + | |
db05c3b1 | 1793 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
1da177e4 LT |
1794 | |
1795 | /* Skip first polling cycle to avoid racing conditions with the FW */ | |
02f1175c | 1796 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1797 | cinfo->intr_enabled = 1; |
1798 | continue; | |
1799 | } | |
1da177e4 | 1800 | |
02f1175c | 1801 | cyz_handle_cmd(cinfo); |
1da177e4 | 1802 | |
02f1175c | 1803 | for (port = 0; port < cinfo->nports; port++) { |
dd025c0c | 1804 | info = &cinfo->ports[port]; |
77451e53 | 1805 | tty = info->port.tty; |
02f1175c | 1806 | buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); |
1da177e4 | 1807 | |
02f1175c | 1808 | if (!info->throttle) |
65f76a82 JS |
1809 | cyz_handle_rx(info, buf_ctrl); |
1810 | cyz_handle_tx(info, buf_ctrl); | |
02f1175c JS |
1811 | } |
1812 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1813 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1814 | } |
b7050906 | 1815 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1816 | } /* cyz_poll */ |
1da177e4 | 1817 | |
02f1175c | 1818 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1819 | |
1820 | /********** End of block of Cyclades-Z specific code *********/ | |
1821 | /***********************************************************/ | |
1822 | ||
1da177e4 LT |
1823 | /* This is called whenever a port becomes active; |
1824 | interrupts are enabled and DTR & RTS are turned on. | |
1825 | */ | |
02f1175c | 1826 | static int startup(struct cyclades_port *info) |
1da177e4 | 1827 | { |
875b206b | 1828 | struct cyclades_card *card; |
02f1175c JS |
1829 | unsigned long flags; |
1830 | int retval = 0; | |
1831 | void __iomem *base_addr; | |
875b206b | 1832 | int chip, channel, index; |
02f1175c | 1833 | unsigned long page; |
1da177e4 | 1834 | |
02f1175c | 1835 | card = info->card; |
875b206b | 1836 | channel = info->line - card->first_line; |
1da177e4 | 1837 | |
02f1175c JS |
1838 | page = get_zeroed_page(GFP_KERNEL); |
1839 | if (!page) | |
1840 | return -ENOMEM; | |
1da177e4 | 1841 | |
9fa1b3b1 | 1842 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1843 | |
77451e53 | 1844 | if (info->port.flags & ASYNC_INITIALIZED) { |
02f1175c JS |
1845 | free_page(page); |
1846 | goto errout; | |
1847 | } | |
1da177e4 | 1848 | |
02f1175c | 1849 | if (!info->type) { |
77451e53 AC |
1850 | if (info->port.tty) |
1851 | set_bit(TTY_IO_ERROR, &info->port.tty->flags); | |
02f1175c JS |
1852 | free_page(page); |
1853 | goto errout; | |
1854 | } | |
1da177e4 | 1855 | |
77451e53 | 1856 | if (info->port.xmit_buf) |
02f1175c JS |
1857 | free_page(page); |
1858 | else | |
77451e53 | 1859 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1860 | |
9fa1b3b1 | 1861 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1862 | |
02f1175c | 1863 | set_line_char(info); |
1da177e4 | 1864 | |
2693f485 | 1865 | if (!cy_is_Z(card)) { |
02f1175c JS |
1866 | chip = channel >> 2; |
1867 | channel &= 0x03; | |
875b206b JS |
1868 | index = card->bus_index; |
1869 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
1870 | |
1871 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
1872 | printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " |
1873 | "base_addr %p\n", | |
1874 | card, chip, channel, base_addr); | |
1da177e4 | 1875 | #endif |
9fa1b3b1 | 1876 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1877 | |
02f1175c | 1878 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1da177e4 | 1879 | |
02f1175c JS |
1880 | cy_writeb(base_addr + (CyRTPR << index), |
1881 | (info->default_timeout ? info->default_timeout : 0x02)); | |
1882 | /* 10ms rx timeout */ | |
1da177e4 | 1883 | |
02f1175c JS |
1884 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
1885 | index); | |
1da177e4 | 1886 | |
02f1175c JS |
1887 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1888 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); | |
1889 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); | |
1da177e4 LT |
1890 | |
1891 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
1892 | printk(KERN_DEBUG "cyc:startup raising DTR\n"); |
1893 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
1894 | readb(base_addr + (CyMSVR1 << index)), |
1895 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 LT |
1896 | #endif |
1897 | ||
02f1175c | 1898 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1899 | readb(base_addr + (CySRER << index)) | CyRxData); |
77451e53 | 1900 | info->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1901 | |
77451e53 AC |
1902 | if (info->port.tty) |
1903 | clear_bit(TTY_IO_ERROR, &info->port.tty->flags); | |
02f1175c JS |
1904 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
1905 | info->breakon = info->breakoff = 0; | |
1906 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1907 | info->idle_stats.in_use = | |
1908 | info->idle_stats.recv_idle = | |
1909 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 1910 | |
9fa1b3b1 | 1911 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1912 | |
02f1175c JS |
1913 | } else { |
1914 | struct FIRM_ID __iomem *firm_id; | |
1915 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
1916 | struct BOARD_CTRL __iomem *board_ctrl; | |
1917 | struct CH_CTRL __iomem *ch_ctrl; | |
1da177e4 | 1918 | |
875b206b | 1919 | base_addr = card->base_addr; |
1da177e4 | 1920 | |
02f1175c | 1921 | firm_id = base_addr + ID_ADDRESS; |
2693f485 | 1922 | if (!cyz_is_loaded(card)) |
02f1175c | 1923 | return -ENODEV; |
1da177e4 | 1924 | |
875b206b | 1925 | zfw_ctrl = card->base_addr + |
db05c3b1 | 1926 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
1927 | board_ctrl = &zfw_ctrl->board_ctrl; |
1928 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 LT |
1929 | |
1930 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
1931 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
1932 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 | 1933 | #endif |
9fa1b3b1 | 1934 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1935 | |
02f1175c | 1936 | cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); |
1da177e4 LT |
1937 | #ifdef Z_WAKE |
1938 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1939 | cy_writel(&ch_ctrl[channel].intr_enable, |
1940 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
1941 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1942 | #else |
02f1175c JS |
1943 | cy_writel(&ch_ctrl[channel].intr_enable, |
1944 | C_IN_IOCTLW | C_IN_MDCD); | |
1945 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1946 | #else |
1947 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1948 | cy_writel(&ch_ctrl[channel].intr_enable, |
1949 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | | |
1950 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1951 | #else |
02f1175c JS |
1952 | cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD); |
1953 | #endif /* CONFIG_CYZ_INTR */ | |
1954 | #endif /* Z_WAKE */ | |
1955 | ||
875b206b | 1956 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1957 | if (retval != 0) { |
21719191 JS |
1958 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1959 | "%x\n", info->line, retval); | |
02f1175c | 1960 | } |
1da177e4 | 1961 | |
02f1175c | 1962 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1963 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1964 | if (retval != 0) { |
21719191 JS |
1965 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1966 | "%x\n", info->line, retval); | |
02f1175c | 1967 | } |
1da177e4 | 1968 | |
02f1175c JS |
1969 | /* set timeout !!! */ |
1970 | /* set RTS and DTR !!! */ | |
1971 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 | 1972 | readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | |
02f1175c | 1973 | C_RS_DTR); |
9fa1b3b1 | 1974 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 1975 | if (retval != 0) { |
21719191 JS |
1976 | printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was " |
1977 | "%x\n", info->line, retval); | |
02f1175c | 1978 | } |
1da177e4 | 1979 | #ifdef CY_DEBUG_DTR |
21719191 | 1980 | printk(KERN_DEBUG "cyc:startup raising Z DTR\n"); |
1da177e4 LT |
1981 | #endif |
1982 | ||
02f1175c JS |
1983 | /* enable send, recv, modem !!! */ |
1984 | ||
77451e53 AC |
1985 | info->port.flags |= ASYNC_INITIALIZED; |
1986 | if (info->port.tty) | |
1987 | clear_bit(TTY_IO_ERROR, &info->port.tty->flags); | |
02f1175c JS |
1988 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
1989 | info->breakon = info->breakoff = 0; | |
1990 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1991 | info->idle_stats.in_use = | |
1992 | info->idle_stats.recv_idle = | |
1993 | info->idle_stats.xmit_idle = jiffies; | |
1da177e4 | 1994 | |
9fa1b3b1 | 1995 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1996 | } |
1da177e4 LT |
1997 | |
1998 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1999 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
2000 | #endif |
2001 | return 0; | |
2002 | ||
2003 | errout: | |
9fa1b3b1 | 2004 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2005 | return retval; |
02f1175c | 2006 | } /* startup */ |
1da177e4 | 2007 | |
02f1175c | 2008 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 2009 | { |
875b206b | 2010 | struct cyclades_card *card; |
02f1175c JS |
2011 | unsigned long flags; |
2012 | void __iomem *base_addr; | |
875b206b | 2013 | int chip, channel, index; |
1da177e4 | 2014 | |
02f1175c | 2015 | card = info->card; |
875b206b | 2016 | channel = info->line - card->first_line; |
2693f485 | 2017 | if (!cy_is_Z(card)) { |
02f1175c JS |
2018 | chip = channel >> 2; |
2019 | channel &= 0x03; | |
875b206b JS |
2020 | index = card->bus_index; |
2021 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 2022 | |
9fa1b3b1 | 2023 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2024 | cy_writeb(base_addr + (CyCAR << index), channel); |
2025 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2026 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 2027 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2028 | } else { |
1da177e4 | 2029 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 2030 | int retval; |
1da177e4 | 2031 | |
9fa1b3b1 | 2032 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 2033 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 2034 | if (retval != 0) { |
21719191 JS |
2035 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
2036 | "%x\n", info->line, retval); | |
02f1175c | 2037 | } |
9fa1b3b1 | 2038 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2039 | #else /* CONFIG_CYZ_INTR */ |
2040 | /* Don't have to do anything at this time */ | |
2041 | #endif /* CONFIG_CYZ_INTR */ | |
2042 | } | |
2043 | } /* start_xmit */ | |
1da177e4 LT |
2044 | |
2045 | /* | |
2046 | * This routine shuts down a serial port; interrupts are disabled, | |
2047 | * and DTR is dropped if the hangup on close termio flag is on. | |
2048 | */ | |
02f1175c | 2049 | static void shutdown(struct cyclades_port *info) |
1da177e4 | 2050 | { |
875b206b | 2051 | struct cyclades_card *card; |
02f1175c JS |
2052 | unsigned long flags; |
2053 | void __iomem *base_addr; | |
875b206b | 2054 | int chip, channel, index; |
02f1175c | 2055 | |
77451e53 | 2056 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
02f1175c | 2057 | return; |
02f1175c JS |
2058 | |
2059 | card = info->card; | |
875b206b | 2060 | channel = info->line - card->first_line; |
2693f485 | 2061 | if (!cy_is_Z(card)) { |
02f1175c JS |
2062 | chip = channel >> 2; |
2063 | channel &= 0x03; | |
875b206b JS |
2064 | index = card->bus_index; |
2065 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
2066 | |
2067 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
2068 | printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " |
2069 | "channel %d, base_addr %p\n", | |
2070 | card, chip, channel, base_addr); | |
1da177e4 LT |
2071 | #endif |
2072 | ||
9fa1b3b1 | 2073 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2074 | |
2075 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
2076 | wake_up_interruptible(&info->delta_msr_wait); | |
1da177e4 | 2077 | |
77451e53 | 2078 | if (info->port.xmit_buf) { |
02f1175c | 2079 | unsigned char *temp; |
77451e53 AC |
2080 | temp = info->port.xmit_buf; |
2081 | info->port.xmit_buf = NULL; | |
02f1175c JS |
2082 | free_page((unsigned long)temp); |
2083 | } | |
2084 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
77451e53 | 2085 | if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) { |
02f1175c JS |
2086 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); |
2087 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); | |
1da177e4 | 2088 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2089 | printk(KERN_DEBUG "cyc shutdown dropping DTR\n"); |
2090 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2091 | readb(base_addr + (CyMSVR1 << index)), |
2092 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2093 | #endif |
02f1175c JS |
2094 | } |
2095 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); | |
2096 | /* it may be appropriate to clear _XMIT at | |
2097 | some later date (after testing)!!! */ | |
2098 | ||
77451e53 AC |
2099 | if (info->port.tty) |
2100 | set_bit(TTY_IO_ERROR, &info->port.tty->flags); | |
2101 | info->port.flags &= ~ASYNC_INITIALIZED; | |
9fa1b3b1 | 2102 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2103 | } else { |
2104 | struct FIRM_ID __iomem *firm_id; | |
2105 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2106 | struct BOARD_CTRL __iomem *board_ctrl; | |
2107 | struct CH_CTRL __iomem *ch_ctrl; | |
2108 | int retval; | |
2109 | ||
875b206b | 2110 | base_addr = card->base_addr; |
1da177e4 | 2111 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2112 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
2113 | "base_addr %p\n", card, channel, base_addr); | |
1da177e4 LT |
2114 | #endif |
2115 | ||
02f1175c | 2116 | firm_id = base_addr + ID_ADDRESS; |
2693f485 | 2117 | if (!cyz_is_loaded(card)) |
02f1175c | 2118 | return; |
1da177e4 | 2119 | |
875b206b | 2120 | zfw_ctrl = card->base_addr + |
db05c3b1 | 2121 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2122 | board_ctrl = &zfw_ctrl->board_ctrl; |
2123 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
1da177e4 | 2124 | |
9fa1b3b1 | 2125 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 2126 | |
77451e53 | 2127 | if (info->port.xmit_buf) { |
02f1175c | 2128 | unsigned char *temp; |
77451e53 AC |
2129 | temp = info->port.xmit_buf; |
2130 | info->port.xmit_buf = NULL; | |
02f1175c | 2131 | free_page((unsigned long)temp); |
1da177e4 | 2132 | } |
02f1175c | 2133 | |
77451e53 | 2134 | if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) { |
02f1175c | 2135 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 | 2136 | (__u32)(readl(&ch_ctrl[channel].rs_control) & |
02f1175c | 2137 | ~(C_RS_RTS | C_RS_DTR))); |
875b206b | 2138 | retval = cyz_issue_cmd(info->card, channel, |
02f1175c JS |
2139 | C_CM_IOCTLM, 0L); |
2140 | if (retval != 0) { | |
21719191 JS |
2141 | printk(KERN_ERR"cyc:shutdown retval on ttyC%d " |
2142 | "was %x\n", info->line, retval); | |
02f1175c | 2143 | } |
1da177e4 | 2144 | #ifdef CY_DEBUG_DTR |
21719191 | 2145 | printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n"); |
1da177e4 | 2146 | #endif |
02f1175c | 2147 | } |
1da177e4 | 2148 | |
77451e53 AC |
2149 | if (info->port.tty) |
2150 | set_bit(TTY_IO_ERROR, &info->port.tty->flags); | |
2151 | info->port.flags &= ~ASYNC_INITIALIZED; | |
02f1175c | 2152 | |
9fa1b3b1 | 2153 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2154 | } |
1da177e4 LT |
2155 | |
2156 | #ifdef CY_DEBUG_OPEN | |
21719191 | 2157 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 2158 | #endif |
02f1175c | 2159 | } /* shutdown */ |
1da177e4 LT |
2160 | |
2161 | /* | |
2162 | * ------------------------------------------------------------ | |
2163 | * cy_open() and friends | |
2164 | * ------------------------------------------------------------ | |
2165 | */ | |
2166 | ||
2167 | static int | |
02f1175c JS |
2168 | block_til_ready(struct tty_struct *tty, struct file *filp, |
2169 | struct cyclades_port *info) | |
1da177e4 | 2170 | { |
02f1175c JS |
2171 | DECLARE_WAITQUEUE(wait, current); |
2172 | struct cyclades_card *cinfo; | |
2173 | unsigned long flags; | |
2174 | int chip, channel, index; | |
2175 | int retval; | |
2176 | void __iomem *base_addr; | |
2177 | ||
875b206b | 2178 | cinfo = info->card; |
02f1175c JS |
2179 | channel = info->line - cinfo->first_line; |
2180 | ||
2181 | /* | |
2182 | * If the device is in the middle of being closed, then block | |
2183 | * until it's done, and then try again. | |
2184 | */ | |
77451e53 AC |
2185 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
2186 | wait_event_interruptible(info->port.close_wait, | |
2187 | !(info->port.flags & ASYNC_CLOSING)); | |
2188 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; | |
1da177e4 | 2189 | } |
02f1175c JS |
2190 | |
2191 | /* | |
2192 | * If non-blocking mode is set, then make the check up front | |
2193 | * and then exit. | |
2194 | */ | |
15ed6cc0 AC |
2195 | if ((filp->f_flags & O_NONBLOCK) || |
2196 | (tty->flags & (1 << TTY_IO_ERROR))) { | |
77451e53 | 2197 | info->port.flags |= ASYNC_NORMAL_ACTIVE; |
02f1175c JS |
2198 | return 0; |
2199 | } | |
2200 | ||
2201 | /* | |
2202 | * Block waiting for the carrier detect and the line to become | |
2203 | * free (i.e., not in use by the callout). While we are in | |
77451e53 | 2204 | * this loop, info->port.count is dropped by one, so that |
02f1175c JS |
2205 | * cy_close() knows when to free things. We restore it upon |
2206 | * exit, either normal or abnormal. | |
2207 | */ | |
2208 | retval = 0; | |
77451e53 | 2209 | add_wait_queue(&info->port.open_wait, &wait); |
1da177e4 | 2210 | #ifdef CY_DEBUG_OPEN |
21719191 | 2211 | printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, " |
77451e53 | 2212 | "count = %d\n", info->line, info->port.count); |
1da177e4 | 2213 | #endif |
9fa1b3b1 | 2214 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c | 2215 | if (!tty_hung_up_p(filp)) |
77451e53 | 2216 | info->port.count--; |
9fa1b3b1 | 2217 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2218 | #ifdef CY_DEBUG_COUNT |
21719191 | 2219 | printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to " |
77451e53 | 2220 | "%d\n", current->pid, info->port.count); |
1da177e4 | 2221 | #endif |
77451e53 | 2222 | info->port.blocked_open++; |
02f1175c | 2223 | |
2693f485 | 2224 | if (!cy_is_Z(cinfo)) { |
02f1175c JS |
2225 | chip = channel >> 2; |
2226 | channel &= 0x03; | |
2227 | index = cinfo->bus_index; | |
2228 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); | |
2229 | ||
2230 | while (1) { | |
9fa1b3b1 | 2231 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2232 | if ((tty->termios->c_cflag & CBAUD)) { |
2233 | cy_writeb(base_addr + (CyCAR << index), | |
2234 | (u_char) channel); | |
2235 | cy_writeb(base_addr + (CyMSVR1 << index), | |
2236 | CyRTS); | |
2237 | cy_writeb(base_addr + (CyMSVR2 << index), | |
2238 | CyDTR); | |
1da177e4 | 2239 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2240 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2241 | "DTR\n"); | |
2242 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
2243 | readb(base_addr + (CyMSVR1 << index)), |
2244 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 2245 | #endif |
02f1175c | 2246 | } |
9fa1b3b1 | 2247 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2248 | |
02f1175c JS |
2249 | set_current_state(TASK_INTERRUPTIBLE); |
2250 | if (tty_hung_up_p(filp) || | |
77451e53 AC |
2251 | !(info->port.flags & ASYNC_INITIALIZED)) { |
2252 | retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? | |
02f1175c JS |
2253 | -EAGAIN : -ERESTARTSYS); |
2254 | break; | |
2255 | } | |
1da177e4 | 2256 | |
9fa1b3b1 | 2257 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
2258 | cy_writeb(base_addr + (CyCAR << index), |
2259 | (u_char) channel); | |
77451e53 | 2260 | if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || |
db05c3b1 | 2261 | (readb(base_addr + |
02f1175c | 2262 | (CyMSVR1 << index)) & CyDCD))) { |
9fa1b3b1 | 2263 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c JS |
2264 | break; |
2265 | } | |
9fa1b3b1 | 2266 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
1da177e4 | 2267 | |
02f1175c JS |
2268 | if (signal_pending(current)) { |
2269 | retval = -ERESTARTSYS; | |
2270 | break; | |
2271 | } | |
1da177e4 | 2272 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2273 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2274 | "ttyC%d, count = %d\n", | |
77451e53 | 2275 | info->line, info->port.count); |
1da177e4 | 2276 | #endif |
02f1175c | 2277 | schedule(); |
1da177e4 | 2278 | } |
02f1175c JS |
2279 | } else { |
2280 | struct FIRM_ID __iomem *firm_id; | |
2281 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
2282 | struct BOARD_CTRL __iomem *board_ctrl; | |
2283 | struct CH_CTRL __iomem *ch_ctrl; | |
02f1175c JS |
2284 | |
2285 | base_addr = cinfo->base_addr; | |
2286 | firm_id = base_addr + ID_ADDRESS; | |
2693f485 | 2287 | if (!cyz_is_loaded(cinfo)) { |
cc0a8fbb | 2288 | __set_current_state(TASK_RUNNING); |
77451e53 | 2289 | remove_wait_queue(&info->port.open_wait, &wait); |
02f1175c JS |
2290 | return -EINVAL; |
2291 | } | |
2292 | ||
15ed6cc0 AC |
2293 | zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr) |
2294 | & 0xfffff); | |
02f1175c JS |
2295 | board_ctrl = &zfw_ctrl->board_ctrl; |
2296 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
2297 | ||
2298 | while (1) { | |
2299 | if ((tty->termios->c_cflag & CBAUD)) { | |
2300 | cy_writel(&ch_ctrl[channel].rs_control, | |
db05c3b1 JS |
2301 | readl(&ch_ctrl[channel].rs_control) | |
2302 | C_RS_RTS | C_RS_DTR); | |
9fa1b3b1 | 2303 | retval = cyz_issue_cmd(cinfo, |
db05c3b1 | 2304 | channel, C_CM_IOCTLM, 0L); |
02f1175c | 2305 | if (retval != 0) { |
21719191 JS |
2306 | printk(KERN_ERR "cyc:block_til_ready " |
2307 | "retval on ttyC%d was %x\n", | |
02f1175c JS |
2308 | info->line, retval); |
2309 | } | |
1da177e4 | 2310 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2311 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
2312 | "Z DTR\n"); | |
1da177e4 | 2313 | #endif |
02f1175c | 2314 | } |
1da177e4 | 2315 | |
02f1175c JS |
2316 | set_current_state(TASK_INTERRUPTIBLE); |
2317 | if (tty_hung_up_p(filp) || | |
77451e53 AC |
2318 | !(info->port.flags & ASYNC_INITIALIZED)) { |
2319 | retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? | |
02f1175c JS |
2320 | -EAGAIN : -ERESTARTSYS); |
2321 | break; | |
2322 | } | |
77451e53 | 2323 | if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || |
db05c3b1 | 2324 | (readl(&ch_ctrl[channel].rs_status) & |
02f1175c JS |
2325 | C_RS_DCD))) { |
2326 | break; | |
2327 | } | |
2328 | if (signal_pending(current)) { | |
2329 | retval = -ERESTARTSYS; | |
2330 | break; | |
2331 | } | |
1da177e4 | 2332 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2333 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
2334 | "ttyC%d, count = %d\n", | |
77451e53 | 2335 | info->line, info->port.count); |
1da177e4 | 2336 | #endif |
02f1175c JS |
2337 | schedule(); |
2338 | } | |
1da177e4 | 2339 | } |
cc0a8fbb | 2340 | __set_current_state(TASK_RUNNING); |
77451e53 | 2341 | remove_wait_queue(&info->port.open_wait, &wait); |
02f1175c | 2342 | if (!tty_hung_up_p(filp)) { |
77451e53 | 2343 | info->port.count++; |
1da177e4 | 2344 | #ifdef CY_DEBUG_COUNT |
21719191 | 2345 | printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing " |
77451e53 | 2346 | "count to %d\n", current->pid, info->port.count); |
1da177e4 | 2347 | #endif |
02f1175c | 2348 | } |
77451e53 | 2349 | info->port.blocked_open--; |
1da177e4 | 2350 | #ifdef CY_DEBUG_OPEN |
21719191 | 2351 | printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, " |
77451e53 | 2352 | "count = %d\n", info->line, info->port.count); |
1da177e4 | 2353 | #endif |
02f1175c JS |
2354 | if (retval) |
2355 | return retval; | |
77451e53 | 2356 | info->port.flags |= ASYNC_NORMAL_ACTIVE; |
02f1175c JS |
2357 | return 0; |
2358 | } /* block_til_ready */ | |
1da177e4 LT |
2359 | |
2360 | /* | |
2361 | * This routine is called whenever a serial port is opened. It | |
2362 | * performs the serial-specific initialization for the tty structure. | |
2363 | */ | |
02f1175c | 2364 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2365 | { |
02f1175c | 2366 | struct cyclades_port *info; |
65f76a82 JS |
2367 | unsigned int i, line; |
2368 | int retval; | |
1da177e4 | 2369 | |
02f1175c | 2370 | line = tty->index; |
15ed6cc0 | 2371 | if (tty->index < 0 || NR_PORTS <= line) |
02f1175c | 2372 | return -ENODEV; |
15ed6cc0 | 2373 | |
dd025c0c JS |
2374 | for (i = 0; i < NR_CARDS; i++) |
2375 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
2376 | line >= cy_card[i].first_line) | |
2377 | break; | |
2378 | if (i >= NR_CARDS) | |
2379 | return -ENODEV; | |
2380 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 2381 | if (info->line < 0) |
02f1175c | 2382 | return -ENODEV; |
1da177e4 | 2383 | |
02f1175c JS |
2384 | /* If the card's firmware hasn't been loaded, |
2385 | treat it as absent from the system. This | |
2386 | will make the user pay attention. | |
2387 | */ | |
2693f485 | 2388 | if (cy_is_Z(info->card)) { |
875b206b | 2389 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
2390 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
2391 | ||
2693f485 JS |
2392 | if (!cyz_is_loaded(cinfo)) { |
2393 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
2394 | readl(&firm_id->signature) == |
2395 | ZFIRM_HLT) { | |
21719191 JS |
2396 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
2397 | "need an external power supply for " | |
2398 | "this number of ports.\nFirmware " | |
2399 | "halted.\n"); | |
02f1175c | 2400 | } else { |
21719191 JS |
2401 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
2402 | "yet loaded\n"); | |
02f1175c JS |
2403 | } |
2404 | return -ENODEV; | |
2405 | } | |
2406 | #ifdef CONFIG_CYZ_INTR | |
2407 | else { | |
2408 | /* In case this Z board is operating in interrupt mode, its | |
2409 | interrupts should be enabled as soon as the first open | |
2410 | happens to one of its ports. */ | |
2411 | if (!cinfo->intr_enabled) { | |
97e87f8e | 2412 | u16 intr; |
02f1175c | 2413 | |
02f1175c | 2414 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
2415 | intr = readw(&cinfo->ctl_addr.p9060-> |
2416 | intr_ctrl_stat) | 0x0900; | |
2417 | cy_writew(&cinfo->ctl_addr.p9060-> | |
2418 | intr_ctrl_stat, intr); | |
02f1175c JS |
2419 | /* Enable interrupts on the FW */ |
2420 | retval = cyz_issue_cmd(cinfo, 0, | |
2421 | C_CM_IRQ_ENBL, 0L); | |
2422 | if (retval != 0) { | |
21719191 JS |
2423 | printk(KERN_ERR "cyc:IRQ enable retval " |
2424 | "was %x\n", retval); | |
02f1175c | 2425 | } |
02f1175c JS |
2426 | cinfo->intr_enabled = 1; |
2427 | } | |
1da177e4 | 2428 | } |
02f1175c JS |
2429 | #endif /* CONFIG_CYZ_INTR */ |
2430 | /* Make sure this Z port really exists in hardware */ | |
2431 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
2432 | return -ENODEV; | |
1da177e4 | 2433 | } |
1da177e4 | 2434 | #ifdef CY_DEBUG_OTHER |
21719191 | 2435 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 2436 | #endif |
02f1175c | 2437 | tty->driver_data = info; |
77451e53 | 2438 | info->port.tty = tty; |
15ed6cc0 | 2439 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 2440 | return -ENODEV; |
15ed6cc0 | 2441 | |
1da177e4 | 2442 | #ifdef CY_DEBUG_OPEN |
21719191 | 2443 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 2444 | info->port.count); |
1da177e4 | 2445 | #endif |
77451e53 | 2446 | info->port.count++; |
1da177e4 | 2447 | #ifdef CY_DEBUG_COUNT |
21719191 | 2448 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 2449 | current->pid, info->port.count); |
1da177e4 | 2450 | #endif |
1da177e4 | 2451 | |
02f1175c JS |
2452 | /* |
2453 | * If the port is the middle of closing, bail out now | |
2454 | */ | |
77451e53 AC |
2455 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
2456 | wait_event_interruptible(info->port.close_wait, | |
2457 | !(info->port.flags & ASYNC_CLOSING)); | |
2458 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; | |
02f1175c | 2459 | } |
1da177e4 | 2460 | |
02f1175c JS |
2461 | /* |
2462 | * Start up serial port | |
2463 | */ | |
2464 | retval = startup(info); | |
15ed6cc0 | 2465 | if (retval) |
02f1175c | 2466 | return retval; |
1da177e4 | 2467 | |
02f1175c JS |
2468 | retval = block_til_ready(tty, filp, info); |
2469 | if (retval) { | |
1da177e4 | 2470 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
2471 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
2472 | "with %d\n", retval); | |
1da177e4 | 2473 | #endif |
02f1175c JS |
2474 | return retval; |
2475 | } | |
1da177e4 | 2476 | |
02f1175c | 2477 | info->throttle = 0; |
1da177e4 | 2478 | |
02f1175c | 2479 | #ifdef CY_DEBUG_OPEN |
21719191 | 2480 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
2481 | #endif |
2482 | return 0; | |
2483 | } /* cy_open */ | |
1da177e4 LT |
2484 | |
2485 | /* | |
2486 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
2487 | */ | |
02f1175c | 2488 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 2489 | { |
875b206b | 2490 | struct cyclades_card *card; |
cab9bdd1 | 2491 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2492 | void __iomem *base_addr; |
875b206b | 2493 | int chip, channel, index; |
02f1175c JS |
2494 | unsigned long orig_jiffies; |
2495 | int char_time; | |
2496 | ||
2497 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
2498 | return; | |
2499 | ||
2500 | if (info->xmit_fifo_size == 0) | |
2501 | return; /* Just in case.... */ | |
1da177e4 | 2502 | |
02f1175c | 2503 | orig_jiffies = jiffies; |
978e595f | 2504 | lock_kernel(); |
02f1175c JS |
2505 | /* |
2506 | * Set the check interval to be 1/5 of the estimated time to | |
2507 | * send a single character, and make it at least 1. The check | |
2508 | * interval should also be less than the timeout. | |
2509 | * | |
2510 | * Note: we have to use pretty tight timings here to satisfy | |
2511 | * the NIST-PCTS. | |
2512 | */ | |
2513 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
2514 | char_time = char_time / 5; | |
2515 | if (char_time <= 0) | |
2516 | char_time = 1; | |
2517 | if (timeout < 0) | |
2518 | timeout = 0; | |
2519 | if (timeout) | |
2520 | char_time = min(char_time, timeout); | |
2521 | /* | |
2522 | * If the transmitter hasn't cleared in twice the approximate | |
2523 | * amount of time to send the entire FIFO, it probably won't | |
2524 | * ever clear. This assumes the UART isn't doing flow | |
2525 | * control, which is currently the case. Hence, if it ever | |
2526 | * takes longer than info->timeout, this is probably due to a | |
2527 | * UART bug of some kind. So, we clamp the timeout parameter at | |
2528 | * 2*info->timeout. | |
2529 | */ | |
2530 | if (!timeout || timeout > 2 * info->timeout) | |
2531 | timeout = 2 * info->timeout; | |
1da177e4 | 2532 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
2533 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
2534 | timeout, char_time, jiffies); | |
1da177e4 | 2535 | #endif |
02f1175c | 2536 | card = info->card; |
875b206b | 2537 | channel = (info->line) - (card->first_line); |
2693f485 | 2538 | if (!cy_is_Z(card)) { |
02f1175c JS |
2539 | chip = channel >> 2; |
2540 | channel &= 0x03; | |
875b206b JS |
2541 | index = card->bus_index; |
2542 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
db05c3b1 | 2543 | while (readb(base_addr + (CySRER << index)) & CyTxRdy) { |
1da177e4 | 2544 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2545 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 2546 | #endif |
02f1175c JS |
2547 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
2548 | break; | |
2549 | if (timeout && time_after(jiffies, orig_jiffies + | |
2550 | timeout)) | |
2551 | break; | |
2552 | } | |
1da177e4 | 2553 | } |
02f1175c JS |
2554 | /* Run one more char cycle */ |
2555 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
978e595f | 2556 | unlock_kernel(); |
1da177e4 | 2557 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 2558 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
2559 | #endif |
2560 | } | |
2561 | ||
978e595f AC |
2562 | static void cy_flush_buffer(struct tty_struct *tty) |
2563 | { | |
2564 | struct cyclades_port *info = tty->driver_data; | |
2565 | struct cyclades_card *card; | |
2566 | int channel, retval; | |
2567 | unsigned long flags; | |
2568 | ||
2569 | #ifdef CY_DEBUG_IO | |
2570 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
2571 | #endif | |
2572 | ||
2573 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
2574 | return; | |
2575 | ||
2576 | card = info->card; | |
2577 | channel = info->line - card->first_line; | |
2578 | ||
2579 | spin_lock_irqsave(&card->card_lock, flags); | |
2580 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2581 | spin_unlock_irqrestore(&card->card_lock, flags); | |
2582 | ||
2693f485 | 2583 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
2584 | buffers as well */ |
2585 | spin_lock_irqsave(&card->card_lock, flags); | |
2586 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
2587 | if (retval != 0) { | |
2588 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
2589 | "was %x\n", info->line, retval); | |
2590 | } | |
2591 | spin_unlock_irqrestore(&card->card_lock, flags); | |
2592 | } | |
2593 | tty_wakeup(tty); | |
2594 | } /* cy_flush_buffer */ | |
2595 | ||
2596 | ||
1da177e4 LT |
2597 | /* |
2598 | * This routine is called when a particular tty device is closed. | |
2599 | */ | |
02f1175c | 2600 | static void cy_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 2601 | { |
cab9bdd1 | 2602 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2603 | struct cyclades_card *card; |
02f1175c | 2604 | unsigned long flags; |
1da177e4 LT |
2605 | |
2606 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2607 | printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); |
1da177e4 LT |
2608 | #endif |
2609 | ||
15ed6cc0 | 2610 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) |
02f1175c | 2611 | return; |
1da177e4 | 2612 | |
9fa1b3b1 JS |
2613 | card = info->card; |
2614 | ||
2615 | spin_lock_irqsave(&card->card_lock, flags); | |
02f1175c JS |
2616 | /* If the TTY is being hung up, nothing to do */ |
2617 | if (tty_hung_up_p(filp)) { | |
9fa1b3b1 | 2618 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2619 | return; |
2620 | } | |
1da177e4 | 2621 | #ifdef CY_DEBUG_OPEN |
21719191 | 2622 | printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line, |
77451e53 | 2623 | info->port.count); |
1da177e4 | 2624 | #endif |
77451e53 | 2625 | if ((tty->count == 1) && (info->port.count != 1)) { |
02f1175c JS |
2626 | /* |
2627 | * Uh, oh. tty->count is 1, which means that the tty | |
2628 | * structure will be freed. Info->count should always | |
2629 | * be one in these conditions. If it's greater than | |
2630 | * one, we've got real problems, since it means the | |
2631 | * serial port won't be shutdown. | |
2632 | */ | |
21719191 | 2633 | printk(KERN_ERR "cyc:cy_close: bad serial port count; " |
77451e53 AC |
2634 | "tty->count is 1, info->port.count is %d\n", info->port.count); |
2635 | info->port.count = 1; | |
02f1175c | 2636 | } |
1da177e4 | 2637 | #ifdef CY_DEBUG_COUNT |
21719191 | 2638 | printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n", |
77451e53 | 2639 | current->pid, info->port.count - 1); |
1da177e4 | 2640 | #endif |
77451e53 | 2641 | if (--info->port.count < 0) { |
1da177e4 | 2642 | #ifdef CY_DEBUG_COUNT |
21719191 | 2643 | printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n"); |
1da177e4 | 2644 | #endif |
77451e53 | 2645 | info->port.count = 0; |
1da177e4 | 2646 | } |
77451e53 | 2647 | if (info->port.count) { |
9fa1b3b1 | 2648 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2649 | return; |
2650 | } | |
77451e53 | 2651 | info->port.flags |= ASYNC_CLOSING; |
1da177e4 | 2652 | |
02f1175c JS |
2653 | /* |
2654 | * Now we wait for the transmit buffer to clear; and we notify | |
2655 | * the line discipline to only process XON/XOFF characters. | |
2656 | */ | |
2657 | tty->closing = 1; | |
9fa1b3b1 | 2658 | spin_unlock_irqrestore(&card->card_lock, flags); |
44b7d1b3 AC |
2659 | if (info->port.closing_wait != CY_CLOSING_WAIT_NONE) |
2660 | tty_wait_until_sent(tty, info->port.closing_wait); | |
15ed6cc0 | 2661 | |
9fa1b3b1 | 2662 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2663 | |
2693f485 | 2664 | if (!cy_is_Z(card)) { |
9fa1b3b1 JS |
2665 | int channel = info->line - card->first_line; |
2666 | int index = card->bus_index; | |
2667 | void __iomem *base_addr = card->base_addr + | |
02f1175c JS |
2668 | (cy_chip_offset[channel >> 2] << index); |
2669 | /* Stop accepting input */ | |
2670 | channel &= 0x03; | |
2671 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
2672 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2673 | readb(base_addr + (CySRER << index)) & ~CyRxData); |
77451e53 | 2674 | if (info->port.flags & ASYNC_INITIALIZED) { |
15ed6cc0 AC |
2675 | /* Waiting for on-board buffers to be empty before |
2676 | closing the port */ | |
9fa1b3b1 | 2677 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2678 | cy_wait_until_sent(tty, info->timeout); |
9fa1b3b1 | 2679 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2680 | } |
2681 | } else { | |
2682 | #ifdef Z_WAKE | |
15ed6cc0 AC |
2683 | /* Waiting for on-board buffers to be empty before closing |
2684 | the port */ | |
9fa1b3b1 | 2685 | void __iomem *base_addr = card->base_addr; |
02f1175c JS |
2686 | struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; |
2687 | struct ZFW_CTRL __iomem *zfw_ctrl = | |
db05c3b1 | 2688 | base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 2689 | struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; |
9fa1b3b1 | 2690 | int channel = info->line - card->first_line; |
02f1175c JS |
2691 | int retval; |
2692 | ||
db05c3b1 | 2693 | if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 2694 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 2695 | if (retval != 0) { |
21719191 JS |
2696 | printk(KERN_DEBUG "cyc:cy_close retval on " |
2697 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 2698 | } |
9fa1b3b1 | 2699 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 2700 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 2701 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2702 | } |
1da177e4 | 2703 | #endif |
02f1175c JS |
2704 | } |
2705 | ||
9fa1b3b1 | 2706 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2707 | shutdown(info); |
978e595f | 2708 | cy_flush_buffer(tty); |
02f1175c | 2709 | tty_ldisc_flush(tty); |
9fa1b3b1 | 2710 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2711 | |
2712 | tty->closing = 0; | |
77451e53 AC |
2713 | info->port.tty = NULL; |
2714 | if (info->port.blocked_open) { | |
9fa1b3b1 | 2715 | spin_unlock_irqrestore(&card->card_lock, flags); |
44b7d1b3 | 2716 | if (info->port.close_delay) { |
02f1175c | 2717 | msleep_interruptible(jiffies_to_msecs |
44b7d1b3 | 2718 | (info->port.close_delay)); |
02f1175c | 2719 | } |
77451e53 | 2720 | wake_up_interruptible(&info->port.open_wait); |
9fa1b3b1 | 2721 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2722 | } |
77451e53 AC |
2723 | info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
2724 | wake_up_interruptible(&info->port.close_wait); | |
1da177e4 LT |
2725 | |
2726 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2727 | printk(KERN_DEBUG "cyc:cy_close done\n"); |
1da177e4 LT |
2728 | #endif |
2729 | ||
9fa1b3b1 | 2730 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2731 | } /* cy_close */ |
1da177e4 LT |
2732 | |
2733 | /* This routine gets called when tty_write has put something into | |
2734 | * the write_queue. The characters may come from user space or | |
2735 | * kernel space. | |
2736 | * | |
2737 | * This routine will return the number of characters actually | |
2738 | * accepted for writing. | |
2739 | * | |
2740 | * If the port is not already transmitting stuff, start it off by | |
2741 | * enabling interrupts. The interrupt service routine will then | |
2742 | * ensure that the characters are sent. | |
2743 | * If the port is already active, there is no need to kick it. | |
2744 | * | |
2745 | */ | |
02f1175c | 2746 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 2747 | { |
cab9bdd1 | 2748 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2749 | unsigned long flags; |
2750 | int c, ret = 0; | |
1da177e4 LT |
2751 | |
2752 | #ifdef CY_DEBUG_IO | |
21719191 | 2753 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
2754 | #endif |
2755 | ||
15ed6cc0 | 2756 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 2757 | return 0; |
1da177e4 | 2758 | |
77451e53 | 2759 | if (!info->port.xmit_buf) |
02f1175c | 2760 | return 0; |
1da177e4 | 2761 | |
9fa1b3b1 | 2762 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2763 | while (1) { |
1a4e2351 HH |
2764 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
2765 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
2766 | |
2767 | if (c <= 0) | |
2768 | break; | |
2769 | ||
77451e53 | 2770 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
2771 | info->xmit_head = (info->xmit_head + c) & |
2772 | (SERIAL_XMIT_SIZE - 1); | |
2773 | info->xmit_cnt += c; | |
2774 | buf += c; | |
2775 | count -= c; | |
2776 | ret += c; | |
2777 | } | |
9fa1b3b1 | 2778 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
2779 | |
2780 | info->idle_stats.xmit_bytes += ret; | |
2781 | info->idle_stats.xmit_idle = jiffies; | |
2782 | ||
15ed6cc0 | 2783 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 2784 | start_xmit(info); |
15ed6cc0 | 2785 | |
02f1175c JS |
2786 | return ret; |
2787 | } /* cy_write */ | |
1da177e4 LT |
2788 | |
2789 | /* | |
2790 | * This routine is called by the kernel to write a single | |
2791 | * character to the tty device. If the kernel uses this routine, | |
2792 | * it must call the flush_chars() routine (if defined) when it is | |
2793 | * done stuffing characters into the driver. If there is no room | |
2794 | * in the queue, the character is ignored. | |
2795 | */ | |
76b25a55 | 2796 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 2797 | { |
cab9bdd1 | 2798 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2799 | unsigned long flags; |
1da177e4 LT |
2800 | |
2801 | #ifdef CY_DEBUG_IO | |
21719191 | 2802 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
2803 | #endif |
2804 | ||
02f1175c | 2805 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 2806 | return 0; |
1da177e4 | 2807 | |
77451e53 | 2808 | if (!info->port.xmit_buf) |
76b25a55 | 2809 | return 0; |
1da177e4 | 2810 | |
9fa1b3b1 | 2811 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 2812 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 2813 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 2814 | return 0; |
02f1175c | 2815 | } |
1da177e4 | 2816 | |
77451e53 | 2817 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
2818 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
2819 | info->xmit_cnt++; | |
1da177e4 LT |
2820 | info->idle_stats.xmit_bytes++; |
2821 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 2822 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 2823 | return 1; |
02f1175c | 2824 | } /* cy_put_char */ |
1da177e4 LT |
2825 | |
2826 | /* | |
2827 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 2828 | * series of characters to the tty device using put_char(). |
1da177e4 | 2829 | */ |
02f1175c | 2830 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 2831 | { |
cab9bdd1 | 2832 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2833 | |
1da177e4 | 2834 | #ifdef CY_DEBUG_IO |
21719191 | 2835 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
2836 | #endif |
2837 | ||
02f1175c JS |
2838 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
2839 | return; | |
1da177e4 | 2840 | |
02f1175c | 2841 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 2842 | !info->port.xmit_buf) |
02f1175c | 2843 | return; |
1da177e4 | 2844 | |
02f1175c JS |
2845 | start_xmit(info); |
2846 | } /* cy_flush_chars */ | |
1da177e4 LT |
2847 | |
2848 | /* | |
2849 | * This routine returns the numbers of characters the tty driver | |
2850 | * will accept for queuing to be written. This number is subject | |
2851 | * to change as output buffers get emptied, or if the output flow | |
2852 | * control is activated. | |
2853 | */ | |
02f1175c | 2854 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 2855 | { |
cab9bdd1 | 2856 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
2857 | int ret; |
2858 | ||
1da177e4 | 2859 | #ifdef CY_DEBUG_IO |
21719191 | 2860 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
2861 | #endif |
2862 | ||
02f1175c JS |
2863 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
2864 | return 0; | |
2865 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
2866 | if (ret < 0) | |
2867 | ret = 0; | |
2868 | return ret; | |
2869 | } /* cy_write_room */ | |
1da177e4 | 2870 | |
02f1175c | 2871 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 2872 | { |
875b206b | 2873 | struct cyclades_card *card; |
cab9bdd1 | 2874 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2875 | int channel; |
1da177e4 | 2876 | |
02f1175c JS |
2877 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
2878 | return 0; | |
2879 | ||
2880 | card = info->card; | |
875b206b | 2881 | channel = (info->line) - (card->first_line); |
1da177e4 LT |
2882 | |
2883 | #ifdef Z_EXT_CHARS_IN_BUFFER | |
2693f485 | 2884 | if (!cy_is_Z(card)) { |
02f1175c | 2885 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 2886 | #ifdef CY_DEBUG_IO |
21719191 JS |
2887 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2888 | info->line, info->xmit_cnt); | |
1da177e4 | 2889 | #endif |
02f1175c | 2890 | return info->xmit_cnt; |
1da177e4 | 2891 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 2892 | } else { |
ad39c300 JS |
2893 | static struct FIRM_ID *firm_id; |
2894 | static struct ZFW_CTRL *zfw_ctrl; | |
2895 | static struct CH_CTRL *ch_ctrl; | |
2896 | static struct BUF_CTRL *buf_ctrl; | |
02f1175c | 2897 | int char_count; |
ad39c300 | 2898 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 2899 | |
978e595f | 2900 | lock_kernel(); |
875b206b JS |
2901 | firm_id = card->base_addr + ID_ADDRESS; |
2902 | zfw_ctrl = card->base_addr + | |
db05c3b1 | 2903 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
2904 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
2905 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); | |
2906 | ||
db05c3b1 JS |
2907 | tx_get = readl(&buf_ctrl->tx_get); |
2908 | tx_put = readl(&buf_ctrl->tx_put); | |
2909 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
2910 | if (tx_put >= tx_get) |
2911 | char_count = tx_put - tx_get; | |
2912 | else | |
2913 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 2914 | #ifdef CY_DEBUG_IO |
21719191 JS |
2915 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2916 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 2917 | #endif |
978e595f | 2918 | unlock_kernel(); |
096dcfce | 2919 | return info->xmit_cnt + char_count; |
02f1175c JS |
2920 | } |
2921 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
2922 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
2923 | |
2924 | /* | |
2925 | * ------------------------------------------------------------ | |
2926 | * cy_ioctl() and friends | |
2927 | * ------------------------------------------------------------ | |
2928 | */ | |
2929 | ||
1a86b5e3 | 2930 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 2931 | { |
02f1175c | 2932 | int co, co_val, bpr; |
1a86b5e3 | 2933 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 2934 | 25000000); |
1da177e4 | 2935 | |
02f1175c JS |
2936 | if (baud == 0) { |
2937 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
2938 | return; | |
2939 | } | |
1da177e4 | 2940 | |
02f1175c JS |
2941 | /* determine which prescaler to use */ |
2942 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
2943 | if (cy_clock / co_val / baud > 63) | |
2944 | break; | |
2945 | } | |
1da177e4 | 2946 | |
02f1175c JS |
2947 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
2948 | if (bpr > 255) | |
2949 | bpr = 255; | |
1da177e4 | 2950 | |
02f1175c JS |
2951 | info->tbpr = info->rbpr = bpr; |
2952 | info->tco = info->rco = co; | |
1da177e4 LT |
2953 | } |
2954 | ||
2955 | /* | |
2956 | * This routine finds or computes the various line characteristics. | |
2957 | * It used to be called config_setup | |
2958 | */ | |
02f1175c | 2959 | static void set_line_char(struct cyclades_port *info) |
1da177e4 | 2960 | { |
875b206b | 2961 | struct cyclades_card *card; |
02f1175c JS |
2962 | unsigned long flags; |
2963 | void __iomem *base_addr; | |
875b206b | 2964 | int chip, channel, index; |
02f1175c | 2965 | unsigned cflag, iflag; |
02f1175c JS |
2966 | int baud, baud_rate = 0; |
2967 | int i; | |
2968 | ||
77451e53 | 2969 | if (!info->port.tty || !info->port.tty->termios) |
02f1175c | 2970 | return; |
15ed6cc0 AC |
2971 | |
2972 | if (info->line == -1) | |
02f1175c | 2973 | return; |
15ed6cc0 | 2974 | |
77451e53 AC |
2975 | cflag = info->port.tty->termios->c_cflag; |
2976 | iflag = info->port.tty->termios->c_iflag; | |
1da177e4 | 2977 | |
02f1175c JS |
2978 | /* |
2979 | * Set up the tty->alt_speed kludge | |
2980 | */ | |
77451e53 AC |
2981 | if (info->port.tty) { |
2982 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
2983 | info->port.tty->alt_speed = 57600; | |
2984 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2985 | info->port.tty->alt_speed = 115200; | |
2986 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2987 | info->port.tty->alt_speed = 230400; | |
2988 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2989 | info->port.tty->alt_speed = 460800; | |
1da177e4 | 2990 | } |
02f1175c JS |
2991 | |
2992 | card = info->card; | |
875b206b | 2993 | channel = info->line - card->first_line; |
02f1175c | 2994 | |
2693f485 | 2995 | if (!cy_is_Z(card)) { |
02f1175c | 2996 | |
875b206b | 2997 | index = card->bus_index; |
02f1175c JS |
2998 | |
2999 | /* baud rate */ | |
77451e53 AC |
3000 | baud = tty_get_baud_rate(info->port.tty); |
3001 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == | |
02f1175c JS |
3002 | ASYNC_SPD_CUST) { |
3003 | if (info->custom_divisor) | |
3004 | baud_rate = info->baud / info->custom_divisor; | |
3005 | else | |
3006 | baud_rate = info->baud; | |
3007 | } else if (baud > CD1400_MAX_SPEED) { | |
3008 | baud = CD1400_MAX_SPEED; | |
3009 | } | |
3010 | /* find the baud index */ | |
3011 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 3012 | if (baud == baud_table[i]) |
02f1175c | 3013 | break; |
02f1175c | 3014 | } |
15ed6cc0 | 3015 | if (i == 20) |
02f1175c | 3016 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 3017 | |
77451e53 | 3018 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
3019 | ASYNC_SPD_CUST) { |
3020 | cyy_baud_calc(info, baud_rate); | |
3021 | } else { | |
3022 | if (info->chip_rev >= CD1400_REV_J) { | |
3023 | /* It is a CD1400 rev. J or later */ | |
3024 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
3025 | info->tco = baud_co_60[i]; /* Tx CO */ | |
3026 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
3027 | info->rco = baud_co_60[i]; /* Rx CO */ | |
3028 | } else { | |
3029 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
3030 | info->tco = baud_co_25[i]; /* Tx CO */ | |
3031 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
3032 | info->rco = baud_co_25[i]; /* Rx CO */ | |
3033 | } | |
3034 | } | |
3035 | if (baud_table[i] == 134) { | |
3036 | /* get it right for 134.5 baud */ | |
3037 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3038 | 2; | |
77451e53 | 3039 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
3040 | ASYNC_SPD_CUST) { |
3041 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3042 | baud_rate) + 2; | |
3043 | } else if (baud_table[i]) { | |
3044 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3045 | baud_table[i]) + 2; | |
3046 | /* this needs to be propagated into the card info */ | |
3047 | } else { | |
3048 | info->timeout = 0; | |
3049 | } | |
3050 | /* By tradition (is it a standard?) a baud rate of zero | |
3051 | implies the line should be/has been closed. A bit | |
3052 | later in this routine such a test is performed. */ | |
3053 | ||
3054 | /* byte size and parity */ | |
3055 | info->cor5 = 0; | |
3056 | info->cor4 = 0; | |
3057 | /* receive threshold */ | |
3058 | info->cor3 = (info->default_threshold ? | |
3059 | info->default_threshold : baud_cor3[i]); | |
3060 | info->cor2 = CyETC; | |
3061 | switch (cflag & CSIZE) { | |
3062 | case CS5: | |
3063 | info->cor1 = Cy_5_BITS; | |
3064 | break; | |
3065 | case CS6: | |
3066 | info->cor1 = Cy_6_BITS; | |
3067 | break; | |
3068 | case CS7: | |
3069 | info->cor1 = Cy_7_BITS; | |
3070 | break; | |
3071 | case CS8: | |
3072 | info->cor1 = Cy_8_BITS; | |
3073 | break; | |
3074 | } | |
15ed6cc0 | 3075 | if (cflag & CSTOPB) |
02f1175c | 3076 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 3077 | |
02f1175c | 3078 | if (cflag & PARENB) { |
15ed6cc0 | 3079 | if (cflag & PARODD) |
02f1175c | 3080 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 3081 | else |
02f1175c | 3082 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 3083 | } else |
02f1175c | 3084 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
3085 | |
3086 | /* CTS flow control flag */ | |
3087 | if (cflag & CRTSCTS) { | |
77451e53 | 3088 | info->port.flags |= ASYNC_CTS_FLOW; |
02f1175c JS |
3089 | info->cor2 |= CyCtsAE; |
3090 | } else { | |
77451e53 | 3091 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
3092 | info->cor2 &= ~CyCtsAE; |
3093 | } | |
3094 | if (cflag & CLOCAL) | |
77451e53 | 3095 | info->port.flags &= ~ASYNC_CHECK_CD; |
02f1175c | 3096 | else |
77451e53 | 3097 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
3098 | |
3099 | /*********************************************** | |
3100 | The hardware option, CyRtsAO, presents RTS when | |
3101 | the chip has characters to send. Since most modems | |
3102 | use RTS as reverse (inbound) flow control, this | |
3103 | option is not used. If inbound flow control is | |
3104 | necessary, DTR can be programmed to provide the | |
3105 | appropriate signals for use with a non-standard | |
3106 | cable. Contact Marcio Saito for details. | |
3107 | ***********************************************/ | |
3108 | ||
02f1175c JS |
3109 | chip = channel >> 2; |
3110 | channel &= 0x03; | |
875b206b | 3111 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 3112 | |
9fa1b3b1 | 3113 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3114 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
3115 | ||
3116 | /* tx and rx baud rate */ | |
3117 | ||
3118 | cy_writeb(base_addr + (CyTCOR << index), info->tco); | |
3119 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); | |
3120 | cy_writeb(base_addr + (CyRCOR << index), info->rco); | |
3121 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); | |
3122 | ||
3123 | /* set line characteristics according configuration */ | |
3124 | ||
3125 | cy_writeb(base_addr + (CySCHR1 << index), | |
77451e53 AC |
3126 | START_CHAR(info->port.tty)); |
3127 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->port.tty)); | |
02f1175c JS |
3128 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); |
3129 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); | |
3130 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); | |
3131 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); | |
3132 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); | |
3133 | ||
3134 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | | |
3135 | CyCOR3ch, index); | |
3136 | ||
15ed6cc0 AC |
3137 | /* !!! Is this needed? */ |
3138 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
02f1175c JS |
3139 | cy_writeb(base_addr + (CyRTPR << index), |
3140 | (info->default_timeout ? info->default_timeout : 0x02)); | |
3141 | /* 10ms rx timeout */ | |
3142 | ||
77451e53 | 3143 | if (C_CLOCAL(info->port.tty)) { |
02f1175c JS |
3144 | /* without modem intr */ |
3145 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3146 | readb(base_addr + (CySRER << index)) | CyMdmCh); |
02f1175c JS |
3147 | /* act on 1->0 modem transitions */ |
3148 | if ((cflag & CRTSCTS) && info->rflow) { | |
3149 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3150 | (CyCTS | rflow_thr[i])); | |
3151 | } else { | |
3152 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3153 | CyCTS); | |
3154 | } | |
3155 | /* act on 0->1 modem transitions */ | |
3156 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); | |
1da177e4 | 3157 | } else { |
02f1175c JS |
3158 | /* without modem intr */ |
3159 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3160 | readb(base_addr + |
02f1175c JS |
3161 | (CySRER << index)) | CyMdmCh); |
3162 | /* act on 1->0 modem transitions */ | |
3163 | if ((cflag & CRTSCTS) && info->rflow) { | |
3164 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3165 | (CyDSR | CyCTS | CyRI | CyDCD | | |
3166 | rflow_thr[i])); | |
3167 | } else { | |
3168 | cy_writeb(base_addr + (CyMCOR1 << index), | |
3169 | CyDSR | CyCTS | CyRI | CyDCD); | |
3170 | } | |
3171 | /* act on 0->1 modem transitions */ | |
3172 | cy_writeb(base_addr + (CyMCOR2 << index), | |
3173 | CyDSR | CyCTS | CyRI | CyDCD); | |
1da177e4 | 3174 | } |
02f1175c JS |
3175 | |
3176 | if (i == 0) { /* baud rate is zero, turn off line */ | |
3177 | if (info->rtsdtr_inv) { | |
3178 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3179 | ~CyRTS); | |
3180 | } else { | |
3181 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3182 | ~CyDTR); | |
3183 | } | |
1da177e4 | 3184 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3185 | printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n"); |
3186 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3187 | readb(base_addr + (CyMSVR1 << index)), |
3188 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3189 | #endif |
02f1175c JS |
3190 | } else { |
3191 | if (info->rtsdtr_inv) { | |
3192 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3193 | CyRTS); | |
3194 | } else { | |
3195 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3196 | CyDTR); | |
3197 | } | |
1da177e4 | 3198 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3199 | printk(KERN_DEBUG "cyc:set_line_char raising DTR\n"); |
3200 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3201 | readb(base_addr + (CyMSVR1 << index)), |
3202 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3203 | #endif |
02f1175c | 3204 | } |
1da177e4 | 3205 | |
77451e53 AC |
3206 | if (info->port.tty) |
3207 | clear_bit(TTY_IO_ERROR, &info->port.tty->flags); | |
9fa1b3b1 | 3208 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 3209 | |
1da177e4 | 3210 | } else { |
02f1175c JS |
3211 | struct FIRM_ID __iomem *firm_id; |
3212 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
02f1175c | 3213 | struct CH_CTRL __iomem *ch_ctrl; |
1a86b5e3 | 3214 | __u32 sw_flow; |
02f1175c | 3215 | int retval; |
1da177e4 | 3216 | |
875b206b | 3217 | firm_id = card->base_addr + ID_ADDRESS; |
2693f485 | 3218 | if (!cyz_is_loaded(card)) |
02f1175c | 3219 | return; |
1da177e4 | 3220 | |
875b206b | 3221 | zfw_ctrl = card->base_addr + |
db05c3b1 | 3222 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c | 3223 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
02f1175c JS |
3224 | |
3225 | /* baud rate */ | |
77451e53 AC |
3226 | baud = tty_get_baud_rate(info->port.tty); |
3227 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == | |
02f1175c JS |
3228 | ASYNC_SPD_CUST) { |
3229 | if (info->custom_divisor) | |
3230 | baud_rate = info->baud / info->custom_divisor; | |
3231 | else | |
3232 | baud_rate = info->baud; | |
3233 | } else if (baud > CYZ_MAX_SPEED) { | |
3234 | baud = CYZ_MAX_SPEED; | |
3235 | } | |
3236 | cy_writel(&ch_ctrl->comm_baud, baud); | |
3237 | ||
3238 | if (baud == 134) { | |
3239 | /* get it right for 134.5 baud */ | |
3240 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
3241 | 2; | |
77451e53 | 3242 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
3243 | ASYNC_SPD_CUST) { |
3244 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3245 | baud_rate) + 2; | |
3246 | } else if (baud) { | |
3247 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
3248 | baud) + 2; | |
3249 | /* this needs to be propagated into the card info */ | |
3250 | } else { | |
3251 | info->timeout = 0; | |
3252 | } | |
1da177e4 | 3253 | |
02f1175c JS |
3254 | /* byte size and parity */ |
3255 | switch (cflag & CSIZE) { | |
3256 | case CS5: | |
3257 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
3258 | break; | |
3259 | case CS6: | |
3260 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
3261 | break; | |
3262 | case CS7: | |
3263 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
3264 | break; | |
3265 | case CS8: | |
3266 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
3267 | break; | |
3268 | } | |
3269 | if (cflag & CSTOPB) { | |
3270 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3271 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
3272 | } else { |
3273 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 3274 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
3275 | } |
3276 | if (cflag & PARENB) { | |
15ed6cc0 | 3277 | if (cflag & PARODD) |
02f1175c | 3278 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 3279 | else |
02f1175c | 3280 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 3281 | } else |
02f1175c | 3282 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 3283 | |
02f1175c JS |
3284 | /* CTS flow control flag */ |
3285 | if (cflag & CRTSCTS) { | |
3286 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 3287 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 3288 | } else { |
db05c3b1 JS |
3289 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
3290 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
3291 | } |
3292 | /* As the HW flow control is done in firmware, the driver | |
3293 | doesn't need to care about it */ | |
77451e53 | 3294 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
3295 | |
3296 | /* XON/XOFF/XANY flow control flags */ | |
3297 | sw_flow = 0; | |
3298 | if (iflag & IXON) { | |
3299 | sw_flow |= C_FL_OXX; | |
3300 | if (iflag & IXANY) | |
3301 | sw_flow |= C_FL_OIXANY; | |
3302 | } | |
3303 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
3304 | ||
875b206b | 3305 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 3306 | if (retval != 0) { |
21719191 JS |
3307 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
3308 | "was %x\n", info->line, retval); | |
02f1175c JS |
3309 | } |
3310 | ||
3311 | /* CD sensitivity */ | |
15ed6cc0 | 3312 | if (cflag & CLOCAL) |
77451e53 | 3313 | info->port.flags &= ~ASYNC_CHECK_CD; |
15ed6cc0 | 3314 | else |
77451e53 | 3315 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 3316 | |
02f1175c JS |
3317 | if (baud == 0) { /* baud rate is zero, turn off line */ |
3318 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3319 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 3320 | #ifdef CY_DEBUG_DTR |
21719191 | 3321 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 3322 | #endif |
02f1175c JS |
3323 | } else { |
3324 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 3325 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 3326 | #ifdef CY_DEBUG_DTR |
21719191 | 3327 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 3328 | #endif |
02f1175c | 3329 | } |
1da177e4 | 3330 | |
15ed6cc0 | 3331 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 3332 | if (retval != 0) { |
21719191 JS |
3333 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
3334 | "was %x\n", info->line, retval); | |
02f1175c | 3335 | } |
1da177e4 | 3336 | |
77451e53 AC |
3337 | if (info->port.tty) |
3338 | clear_bit(TTY_IO_ERROR, &info->port.tty->flags); | |
1da177e4 | 3339 | } |
02f1175c | 3340 | } /* set_line_char */ |
1da177e4 LT |
3341 | |
3342 | static int | |
02f1175c | 3343 | get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 3344 | struct serial_struct __user *retinfo) |
1da177e4 | 3345 | { |
02f1175c | 3346 | struct serial_struct tmp; |
875b206b | 3347 | struct cyclades_card *cinfo = info->card; |
1da177e4 | 3348 | |
02f1175c JS |
3349 | if (!retinfo) |
3350 | return -EFAULT; | |
3351 | memset(&tmp, 0, sizeof(tmp)); | |
3352 | tmp.type = info->type; | |
3353 | tmp.line = info->line; | |
875b206b JS |
3354 | tmp.port = (info->card - cy_card) * 0x100 + info->line - |
3355 | cinfo->first_line; | |
02f1175c | 3356 | tmp.irq = cinfo->irq; |
77451e53 | 3357 | tmp.flags = info->port.flags; |
44b7d1b3 AC |
3358 | tmp.close_delay = info->port.close_delay; |
3359 | tmp.closing_wait = info->port.closing_wait; | |
02f1175c JS |
3360 | tmp.baud_base = info->baud; |
3361 | tmp.custom_divisor = info->custom_divisor; | |
3362 | tmp.hub6 = 0; /*!!! */ | |
3363 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
3364 | } /* get_serial_info */ | |
1da177e4 LT |
3365 | |
3366 | static int | |
02f1175c | 3367 | set_serial_info(struct cyclades_port *info, |
15ed6cc0 | 3368 | struct serial_struct __user *new_info) |
1da177e4 | 3369 | { |
02f1175c JS |
3370 | struct serial_struct new_serial; |
3371 | struct cyclades_port old_info; | |
3372 | ||
3373 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
3374 | return -EFAULT; | |
3375 | old_info = *info; | |
3376 | ||
3377 | if (!capable(CAP_SYS_ADMIN)) { | |
44b7d1b3 | 3378 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
3379 | new_serial.baud_base != info->baud || |
3380 | (new_serial.flags & ASYNC_FLAGS & | |
3381 | ~ASYNC_USR_MASK) != | |
77451e53 | 3382 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
02f1175c | 3383 | return -EPERM; |
77451e53 | 3384 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
3385 | (new_serial.flags & ASYNC_USR_MASK); |
3386 | info->baud = new_serial.baud_base; | |
3387 | info->custom_divisor = new_serial.custom_divisor; | |
3388 | goto check_and_exit; | |
3389 | } | |
3390 | ||
3391 | /* | |
3392 | * OK, past this point, all the error checking has been done. | |
3393 | * At this point, we start making changes..... | |
3394 | */ | |
3395 | ||
3396 | info->baud = new_serial.baud_base; | |
3397 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 3398 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 3399 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
3400 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
3401 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
3402 | |
3403 | check_and_exit: | |
77451e53 | 3404 | if (info->port.flags & ASYNC_INITIALIZED) { |
02f1175c JS |
3405 | set_line_char(info); |
3406 | return 0; | |
3407 | } else { | |
3408 | return startup(info); | |
3409 | } | |
3410 | } /* set_serial_info */ | |
1da177e4 LT |
3411 | |
3412 | /* | |
3413 | * get_lsr_info - get line status register info | |
3414 | * | |
3415 | * Purpose: Let user call ioctl() to get info when the UART physically | |
3416 | * is emptied. On bus types like RS485, the transmitter must | |
3417 | * release the bus after transmitting. This must be done when | |
3418 | * the transmit shift register is empty, not be done when the | |
3419 | * transmit holding register is empty. This functionality | |
3420 | * allows an RS485 driver to be written in user space. | |
3421 | */ | |
15ed6cc0 | 3422 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 3423 | { |
875b206b JS |
3424 | struct cyclades_card *card; |
3425 | int chip, channel, index; | |
02f1175c JS |
3426 | unsigned char status; |
3427 | unsigned int result; | |
3428 | unsigned long flags; | |
3429 | void __iomem *base_addr; | |
1da177e4 | 3430 | |
02f1175c | 3431 | card = info->card; |
875b206b | 3432 | channel = (info->line) - (card->first_line); |
2693f485 | 3433 | if (!cy_is_Z(card)) { |
02f1175c JS |
3434 | chip = channel >> 2; |
3435 | channel &= 0x03; | |
875b206b JS |
3436 | index = card->bus_index; |
3437 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3438 | |
9fa1b3b1 | 3439 | spin_lock_irqsave(&card->card_lock, flags); |
db05c3b1 | 3440 | status = readb(base_addr + (CySRER << index)) & |
02f1175c | 3441 | (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 3442 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3443 | result = (status ? 0 : TIOCSER_TEMT); |
3444 | } else { | |
3445 | /* Not supported yet */ | |
3446 | return -EINVAL; | |
3447 | } | |
3448 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
3449 | } |
3450 | ||
02f1175c | 3451 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 3452 | { |
cab9bdd1 | 3453 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3454 | struct cyclades_card *card; |
3455 | int chip, channel, index; | |
02f1175c JS |
3456 | void __iomem *base_addr; |
3457 | unsigned long flags; | |
3458 | unsigned char status; | |
3459 | unsigned long lstatus; | |
3460 | unsigned int result; | |
3461 | struct FIRM_ID __iomem *firm_id; | |
3462 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3463 | struct BOARD_CTRL __iomem *board_ctrl; | |
3464 | struct CH_CTRL __iomem *ch_ctrl; | |
3465 | ||
bf9d8929 | 3466 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 3467 | return -ENODEV; |
1da177e4 | 3468 | |
7b130c0e AC |
3469 | lock_kernel(); |
3470 | ||
02f1175c | 3471 | card = info->card; |
875b206b | 3472 | channel = info->line - card->first_line; |
2693f485 | 3473 | if (!cy_is_Z(card)) { |
02f1175c JS |
3474 | chip = channel >> 2; |
3475 | channel &= 0x03; | |
875b206b JS |
3476 | index = card->bus_index; |
3477 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3478 | |
9fa1b3b1 | 3479 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3480 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
db05c3b1 JS |
3481 | status = readb(base_addr + (CyMSVR1 << index)); |
3482 | status |= readb(base_addr + (CyMSVR2 << index)); | |
9fa1b3b1 | 3483 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3484 | |
3485 | if (info->rtsdtr_inv) { | |
3486 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
3487 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
3488 | } else { | |
3489 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
3490 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
3491 | } | |
3492 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
3493 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
3494 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
3495 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 3496 | } else { |
875b206b JS |
3497 | base_addr = card->base_addr; |
3498 | firm_id = card->base_addr + ID_ADDRESS; | |
2693f485 | 3499 | if (cyz_is_loaded(card)) { |
875b206b | 3500 | zfw_ctrl = card->base_addr + |
db05c3b1 | 3501 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3502 | board_ctrl = &zfw_ctrl->board_ctrl; |
3503 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
db05c3b1 | 3504 | lstatus = readl(&ch_ctrl[channel].rs_status); |
02f1175c JS |
3505 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
3506 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
3507 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
3508 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
3509 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
3510 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
3511 | } else { | |
3512 | result = 0; | |
7b130c0e | 3513 | unlock_kernel(); |
02f1175c JS |
3514 | return -ENODEV; |
3515 | } | |
1da177e4 | 3516 | |
02f1175c | 3517 | } |
7b130c0e | 3518 | unlock_kernel(); |
02f1175c JS |
3519 | return result; |
3520 | } /* cy_tiomget */ | |
1da177e4 LT |
3521 | |
3522 | static int | |
3523 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
02f1175c | 3524 | unsigned int set, unsigned int clear) |
1da177e4 | 3525 | { |
cab9bdd1 | 3526 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3527 | struct cyclades_card *card; |
3528 | int chip, channel, index; | |
02f1175c JS |
3529 | void __iomem *base_addr; |
3530 | unsigned long flags; | |
3531 | struct FIRM_ID __iomem *firm_id; | |
3532 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3533 | struct BOARD_CTRL __iomem *board_ctrl; | |
3534 | struct CH_CTRL __iomem *ch_ctrl; | |
3535 | int retval; | |
3536 | ||
bf9d8929 | 3537 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
3538 | return -ENODEV; |
3539 | ||
3540 | card = info->card; | |
875b206b | 3541 | channel = (info->line) - (card->first_line); |
2693f485 | 3542 | if (!cy_is_Z(card)) { |
02f1175c JS |
3543 | chip = channel >> 2; |
3544 | channel &= 0x03; | |
875b206b JS |
3545 | index = card->bus_index; |
3546 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c JS |
3547 | |
3548 | if (set & TIOCM_RTS) { | |
9fa1b3b1 | 3549 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3550 | cy_writeb(base_addr + (CyCAR << index), |
3551 | (u_char) channel); | |
3552 | if (info->rtsdtr_inv) { | |
3553 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3554 | CyDTR); | |
3555 | } else { | |
3556 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3557 | CyRTS); | |
3558 | } | |
9fa1b3b1 | 3559 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3560 | } |
3561 | if (clear & TIOCM_RTS) { | |
9fa1b3b1 | 3562 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3563 | cy_writeb(base_addr + (CyCAR << index), |
3564 | (u_char) channel); | |
3565 | if (info->rtsdtr_inv) { | |
3566 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3567 | ~CyDTR); | |
3568 | } else { | |
3569 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3570 | ~CyRTS); | |
3571 | } | |
9fa1b3b1 | 3572 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3573 | } |
3574 | if (set & TIOCM_DTR) { | |
9fa1b3b1 | 3575 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3576 | cy_writeb(base_addr + (CyCAR << index), |
3577 | (u_char) channel); | |
3578 | if (info->rtsdtr_inv) { | |
3579 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3580 | CyRTS); | |
3581 | } else { | |
3582 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3583 | CyDTR); | |
3584 | } | |
1da177e4 | 3585 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3586 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); |
3587 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3588 | readb(base_addr + (CyMSVR1 << index)), |
3589 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3590 | #endif |
9fa1b3b1 | 3591 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3592 | } |
3593 | if (clear & TIOCM_DTR) { | |
9fa1b3b1 | 3594 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3595 | cy_writeb(base_addr + (CyCAR << index), |
3596 | (u_char) channel); | |
3597 | if (info->rtsdtr_inv) { | |
3598 | cy_writeb(base_addr + (CyMSVR1 << index), | |
3599 | ~CyRTS); | |
3600 | } else { | |
3601 | cy_writeb(base_addr + (CyMSVR2 << index), | |
3602 | ~CyDTR); | |
3603 | } | |
1da177e4 LT |
3604 | |
3605 | #ifdef CY_DEBUG_DTR | |
21719191 JS |
3606 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); |
3607 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
db05c3b1 JS |
3608 | readb(base_addr + (CyMSVR1 << index)), |
3609 | readb(base_addr + (CyMSVR2 << index))); | |
1da177e4 | 3610 | #endif |
9fa1b3b1 | 3611 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3612 | } |
3613 | } else { | |
875b206b | 3614 | base_addr = card->base_addr; |
02f1175c | 3615 | |
875b206b | 3616 | firm_id = card->base_addr + ID_ADDRESS; |
2693f485 | 3617 | if (cyz_is_loaded(card)) { |
875b206b | 3618 | zfw_ctrl = card->base_addr + |
db05c3b1 | 3619 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
02f1175c JS |
3620 | board_ctrl = &zfw_ctrl->board_ctrl; |
3621 | ch_ctrl = zfw_ctrl->ch_ctrl; | |
3622 | ||
3623 | if (set & TIOCM_RTS) { | |
9fa1b3b1 | 3624 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3625 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3626 | readl(&ch_ctrl[channel].rs_control) | |
3627 | C_RS_RTS); | |
9fa1b3b1 | 3628 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3629 | } |
3630 | if (clear & TIOCM_RTS) { | |
9fa1b3b1 | 3631 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3632 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3633 | readl(&ch_ctrl[channel].rs_control) & |
3634 | ~C_RS_RTS); | |
9fa1b3b1 | 3635 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3636 | } |
3637 | if (set & TIOCM_DTR) { | |
9fa1b3b1 | 3638 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3639 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3640 | readl(&ch_ctrl[channel].rs_control) | |
3641 | C_RS_DTR); | |
1da177e4 | 3642 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3643 | printk(KERN_DEBUG "cyc:set_modem_info raising " |
3644 | "Z DTR\n"); | |
1da177e4 | 3645 | #endif |
9fa1b3b1 | 3646 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3647 | } |
3648 | if (clear & TIOCM_DTR) { | |
9fa1b3b1 | 3649 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3650 | cy_writel(&ch_ctrl[channel].rs_control, |
db05c3b1 JS |
3651 | readl(&ch_ctrl[channel].rs_control) & |
3652 | ~C_RS_DTR); | |
1da177e4 | 3653 | #ifdef CY_DEBUG_DTR |
21719191 JS |
3654 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
3655 | "Z DTR\n"); | |
1da177e4 | 3656 | #endif |
9fa1b3b1 | 3657 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3658 | } |
3659 | } else { | |
3660 | return -ENODEV; | |
3661 | } | |
9fa1b3b1 JS |
3662 | spin_lock_irqsave(&card->card_lock, flags); |
3663 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); | |
02f1175c | 3664 | if (retval != 0) { |
21719191 JS |
3665 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
3666 | "was %x\n", info->line, retval); | |
02f1175c | 3667 | } |
9fa1b3b1 | 3668 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 3669 | } |
02f1175c JS |
3670 | return 0; |
3671 | } /* cy_tiocmset */ | |
1da177e4 LT |
3672 | |
3673 | /* | |
3674 | * cy_break() --- routine which turns the break handling on or off | |
3675 | */ | |
9e98966c | 3676 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 3677 | { |
cab9bdd1 | 3678 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 3679 | struct cyclades_card *card; |
02f1175c | 3680 | unsigned long flags; |
9e98966c | 3681 | int retval = 0; |
1da177e4 | 3682 | |
02f1175c | 3683 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 3684 | return -EINVAL; |
1da177e4 | 3685 | |
9fa1b3b1 JS |
3686 | card = info->card; |
3687 | ||
3688 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 3689 | if (!cy_is_Z(card)) { |
02f1175c JS |
3690 | /* Let the transmit ISR take care of this (since it |
3691 | requires stuffing characters into the output stream). | |
3692 | */ | |
3693 | if (break_state == -1) { | |
3694 | if (!info->breakon) { | |
3695 | info->breakon = 1; | |
3696 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 3697 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3698 | start_xmit(info); |
9fa1b3b1 | 3699 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3700 | } |
3701 | } | |
3702 | } else { | |
3703 | if (!info->breakoff) { | |
3704 | info->breakoff = 1; | |
3705 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 3706 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 3707 | start_xmit(info); |
9fa1b3b1 | 3708 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3709 | } |
3710 | } | |
1da177e4 | 3711 | } |
1da177e4 | 3712 | } else { |
02f1175c | 3713 | if (break_state == -1) { |
9fa1b3b1 JS |
3714 | retval = cyz_issue_cmd(card, |
3715 | info->line - card->first_line, | |
02f1175c JS |
3716 | C_CM_SET_BREAK, 0L); |
3717 | if (retval != 0) { | |
21719191 JS |
3718 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
3719 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
3720 | } |
3721 | } else { | |
9fa1b3b1 JS |
3722 | retval = cyz_issue_cmd(card, |
3723 | info->line - card->first_line, | |
02f1175c JS |
3724 | C_CM_CLR_BREAK, 0L); |
3725 | if (retval != 0) { | |
21719191 JS |
3726 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
3727 | "on ttyC%d was %x\n", info->line, | |
3728 | retval); | |
02f1175c | 3729 | } |
1da177e4 | 3730 | } |
1da177e4 | 3731 | } |
9fa1b3b1 | 3732 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 3733 | return retval; |
02f1175c | 3734 | } /* cy_break */ |
1da177e4 | 3735 | |
15ed6cc0 AC |
3736 | static int get_mon_info(struct cyclades_port *info, |
3737 | struct cyclades_monitor __user *mon) | |
1da177e4 LT |
3738 | { |
3739 | ||
02f1175c JS |
3740 | if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) |
3741 | return -EFAULT; | |
3742 | info->mon.int_count = 0; | |
3743 | info->mon.char_count = 0; | |
3744 | info->mon.char_max = 0; | |
3745 | info->mon.char_last = 0; | |
3746 | return 0; | |
3747 | } /* get_mon_info */ | |
1da177e4 | 3748 | |
02f1175c | 3749 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3750 | { |
875b206b | 3751 | struct cyclades_card *card; |
02f1175c | 3752 | void __iomem *base_addr; |
875b206b | 3753 | int channel, chip, index; |
02f1175c | 3754 | unsigned long flags; |
1da177e4 | 3755 | |
02f1175c | 3756 | card = info->card; |
875b206b | 3757 | channel = info->line - card->first_line; |
2693f485 | 3758 | if (!cy_is_Z(card)) { |
02f1175c JS |
3759 | chip = channel >> 2; |
3760 | channel &= 0x03; | |
875b206b | 3761 | index = card->bus_index; |
02f1175c | 3762 | base_addr = |
875b206b | 3763 | card->base_addr + (cy_chip_offset[chip] << index); |
02f1175c JS |
3764 | |
3765 | info->cor3 &= ~CyREC_FIFO; | |
3766 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 3767 | |
9fa1b3b1 | 3768 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
3769 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
3770 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); | |
9fa1b3b1 | 3771 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3772 | } |
3773 | return 0; | |
3774 | } /* set_threshold */ | |
1da177e4 | 3775 | |
15ed6cc0 AC |
3776 | static int get_threshold(struct cyclades_port *info, |
3777 | unsigned long __user *value) | |
1da177e4 | 3778 | { |
875b206b | 3779 | struct cyclades_card *card; |
02f1175c | 3780 | void __iomem *base_addr; |
875b206b | 3781 | int channel, chip, index; |
02f1175c | 3782 | unsigned long tmp; |
1da177e4 | 3783 | |
02f1175c | 3784 | card = info->card; |
875b206b | 3785 | channel = info->line - card->first_line; |
2693f485 | 3786 | if (!cy_is_Z(card)) { |
02f1175c JS |
3787 | chip = channel >> 2; |
3788 | channel &= 0x03; | |
875b206b JS |
3789 | index = card->bus_index; |
3790 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3791 | |
db05c3b1 | 3792 | tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
02f1175c | 3793 | return put_user(tmp, value); |
02f1175c | 3794 | } |
f7429034 | 3795 | return 0; |
02f1175c | 3796 | } /* get_threshold */ |
1da177e4 | 3797 | |
15ed6cc0 AC |
3798 | static int set_default_threshold(struct cyclades_port *info, |
3799 | unsigned long value) | |
1da177e4 | 3800 | { |
02f1175c JS |
3801 | info->default_threshold = value & 0x0f; |
3802 | return 0; | |
3803 | } /* set_default_threshold */ | |
1da177e4 | 3804 | |
15ed6cc0 AC |
3805 | static int get_default_threshold(struct cyclades_port *info, |
3806 | unsigned long __user *value) | |
1da177e4 | 3807 | { |
02f1175c JS |
3808 | return put_user(info->default_threshold, value); |
3809 | } /* get_default_threshold */ | |
1da177e4 | 3810 | |
02f1175c | 3811 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3812 | { |
875b206b | 3813 | struct cyclades_card *card; |
02f1175c | 3814 | void __iomem *base_addr; |
875b206b | 3815 | int channel, chip, index; |
02f1175c | 3816 | unsigned long flags; |
1da177e4 | 3817 | |
02f1175c | 3818 | card = info->card; |
875b206b | 3819 | channel = info->line - card->first_line; |
2693f485 | 3820 | if (!cy_is_Z(card)) { |
02f1175c JS |
3821 | chip = channel >> 2; |
3822 | channel &= 0x03; | |
875b206b JS |
3823 | index = card->bus_index; |
3824 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 3825 | |
9fa1b3b1 | 3826 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 3827 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); |
9fa1b3b1 | 3828 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3829 | } |
3830 | return 0; | |
3831 | } /* set_timeout */ | |
1da177e4 | 3832 | |
15ed6cc0 AC |
3833 | static int get_timeout(struct cyclades_port *info, |
3834 | unsigned long __user *value) | |
1da177e4 | 3835 | { |
875b206b | 3836 | struct cyclades_card *card; |
02f1175c | 3837 | void __iomem *base_addr; |
875b206b | 3838 | int channel, chip, index; |
02f1175c | 3839 | unsigned long tmp; |
1da177e4 | 3840 | |
02f1175c | 3841 | card = info->card; |
875b206b | 3842 | channel = info->line - card->first_line; |
2693f485 | 3843 | if (!cy_is_Z(card)) { |
02f1175c JS |
3844 | chip = channel >> 2; |
3845 | channel &= 0x03; | |
875b206b JS |
3846 | index = card->bus_index; |
3847 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 3848 | |
db05c3b1 | 3849 | tmp = readb(base_addr + (CyRTPR << index)); |
02f1175c | 3850 | return put_user(tmp, value); |
02f1175c | 3851 | } |
f7429034 | 3852 | return 0; |
02f1175c | 3853 | } /* get_timeout */ |
1da177e4 | 3854 | |
02f1175c | 3855 | static int set_default_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 3856 | { |
02f1175c JS |
3857 | info->default_timeout = value & 0xff; |
3858 | return 0; | |
3859 | } /* set_default_timeout */ | |
1da177e4 | 3860 | |
15ed6cc0 AC |
3861 | static int get_default_timeout(struct cyclades_port *info, |
3862 | unsigned long __user *value) | |
1da177e4 | 3863 | { |
02f1175c JS |
3864 | return put_user(info->default_timeout, value); |
3865 | } /* get_default_timeout */ | |
1da177e4 LT |
3866 | |
3867 | /* | |
3868 | * This routine allows the tty driver to implement device- | |
3869 | * specific ioctl's. If the ioctl number passed in cmd is | |
3870 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
3871 | */ | |
3872 | static int | |
02f1175c JS |
3873 | cy_ioctl(struct tty_struct *tty, struct file *file, |
3874 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 3875 | { |
cab9bdd1 | 3876 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
3877 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ |
3878 | struct serial_icounter_struct __user *p_cuser; /* user space */ | |
3879 | int ret_val = 0; | |
3880 | unsigned long flags; | |
3881 | void __user *argp = (void __user *)arg; | |
3882 | ||
3883 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
3884 | return -ENODEV; | |
1da177e4 LT |
3885 | |
3886 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
3887 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
3888 | info->line, cmd, arg); | |
1da177e4 | 3889 | #endif |
7b130c0e | 3890 | lock_kernel(); |
1da177e4 | 3891 | |
02f1175c JS |
3892 | switch (cmd) { |
3893 | case CYGETMON: | |
3894 | ret_val = get_mon_info(info, argp); | |
3895 | break; | |
3896 | case CYGETTHRESH: | |
3897 | ret_val = get_threshold(info, argp); | |
3898 | break; | |
3899 | case CYSETTHRESH: | |
3900 | ret_val = set_threshold(info, arg); | |
3901 | break; | |
3902 | case CYGETDEFTHRESH: | |
3903 | ret_val = get_default_threshold(info, argp); | |
3904 | break; | |
3905 | case CYSETDEFTHRESH: | |
3906 | ret_val = set_default_threshold(info, arg); | |
3907 | break; | |
3908 | case CYGETTIMEOUT: | |
3909 | ret_val = get_timeout(info, argp); | |
3910 | break; | |
3911 | case CYSETTIMEOUT: | |
3912 | ret_val = set_timeout(info, arg); | |
3913 | break; | |
3914 | case CYGETDEFTIMEOUT: | |
3915 | ret_val = get_default_timeout(info, argp); | |
3916 | break; | |
3917 | case CYSETDEFTIMEOUT: | |
3918 | ret_val = set_default_timeout(info, arg); | |
3919 | break; | |
1da177e4 | 3920 | case CYSETRFLOW: |
02f1175c JS |
3921 | info->rflow = (int)arg; |
3922 | ret_val = 0; | |
3923 | break; | |
1da177e4 | 3924 | case CYGETRFLOW: |
02f1175c JS |
3925 | ret_val = info->rflow; |
3926 | break; | |
1da177e4 | 3927 | case CYSETRTSDTR_INV: |
02f1175c JS |
3928 | info->rtsdtr_inv = (int)arg; |
3929 | ret_val = 0; | |
3930 | break; | |
1da177e4 | 3931 | case CYGETRTSDTR_INV: |
02f1175c JS |
3932 | ret_val = info->rtsdtr_inv; |
3933 | break; | |
1da177e4 | 3934 | case CYGETCD1400VER: |
02f1175c JS |
3935 | ret_val = info->chip_rev; |
3936 | break; | |
1da177e4 LT |
3937 | #ifndef CONFIG_CYZ_INTR |
3938 | case CYZSETPOLLCYCLE: | |
02f1175c JS |
3939 | cyz_polling_cycle = (arg * HZ) / 1000; |
3940 | ret_val = 0; | |
3941 | break; | |
1da177e4 | 3942 | case CYZGETPOLLCYCLE: |
02f1175c JS |
3943 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
3944 | break; | |
3945 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 3946 | case CYSETWAIT: |
44b7d1b3 | 3947 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c JS |
3948 | ret_val = 0; |
3949 | break; | |
1da177e4 | 3950 | case CYGETWAIT: |
44b7d1b3 | 3951 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
3952 | break; |
3953 | case TIOCGSERIAL: | |
3954 | ret_val = get_serial_info(info, argp); | |
3955 | break; | |
3956 | case TIOCSSERIAL: | |
3957 | ret_val = set_serial_info(info, argp); | |
3958 | break; | |
3959 | case TIOCSERGETLSR: /* Get line status register */ | |
3960 | ret_val = get_lsr_info(info, argp); | |
3961 | break; | |
3962 | /* | |
3963 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
3964 | * - mask passed in arg for lines of interest | |
3965 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
3966 | * Caller should use TIOCGICOUNT to see which one it was | |
3967 | */ | |
1da177e4 | 3968 | case TIOCMIWAIT: |
9fa1b3b1 | 3969 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 3970 | /* note the counters on entry */ |
2c7fea99 | 3971 | cnow = info->icount; |
9fa1b3b1 | 3972 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
2c7fea99 JS |
3973 | ret_val = wait_event_interruptible(info->delta_msr_wait, ({ |
3974 | cprev = cnow; | |
9fa1b3b1 | 3975 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 3976 | cnow = info->icount; /* atomic copy */ |
9fa1b3b1 | 3977 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c | 3978 | |
2c7fea99 JS |
3979 | ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
3980 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
3981 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
3982 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)); | |
3983 | })); | |
3984 | break; | |
1da177e4 | 3985 | |
02f1175c JS |
3986 | /* |
3987 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
3988 | * Return: write counters to the user passed counter struct | |
3989 | * NB: both 1->0 and 0->1 transitions are counted except for | |
3990 | * RI where only 0->1 is counted. | |
3991 | */ | |
1da177e4 | 3992 | case TIOCGICOUNT: |
9fa1b3b1 | 3993 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 3994 | cnow = info->icount; |
9fa1b3b1 | 3995 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
3996 | p_cuser = argp; |
3997 | ret_val = put_user(cnow.cts, &p_cuser->cts); | |
3998 | if (ret_val) | |
7b130c0e | 3999 | break; |
02f1175c JS |
4000 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); |
4001 | if (ret_val) | |
7b130c0e | 4002 | break; |
02f1175c JS |
4003 | ret_val = put_user(cnow.rng, &p_cuser->rng); |
4004 | if (ret_val) | |
7b130c0e | 4005 | break; |
02f1175c JS |
4006 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); |
4007 | if (ret_val) | |
7b130c0e | 4008 | break; |
02f1175c JS |
4009 | ret_val = put_user(cnow.rx, &p_cuser->rx); |
4010 | if (ret_val) | |
7b130c0e | 4011 | break; |
02f1175c JS |
4012 | ret_val = put_user(cnow.tx, &p_cuser->tx); |
4013 | if (ret_val) | |
7b130c0e | 4014 | break; |
02f1175c JS |
4015 | ret_val = put_user(cnow.frame, &p_cuser->frame); |
4016 | if (ret_val) | |
7b130c0e | 4017 | break; |
02f1175c JS |
4018 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); |
4019 | if (ret_val) | |
7b130c0e | 4020 | break; |
02f1175c JS |
4021 | ret_val = put_user(cnow.parity, &p_cuser->parity); |
4022 | if (ret_val) | |
7b130c0e | 4023 | break; |
02f1175c JS |
4024 | ret_val = put_user(cnow.brk, &p_cuser->brk); |
4025 | if (ret_val) | |
7b130c0e | 4026 | break; |
02f1175c JS |
4027 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); |
4028 | if (ret_val) | |
7b130c0e | 4029 | break; |
02f1175c JS |
4030 | ret_val = 0; |
4031 | break; | |
4032 | default: | |
4033 | ret_val = -ENOIOCTLCMD; | |
4034 | } | |
7b130c0e | 4035 | unlock_kernel(); |
1da177e4 LT |
4036 | |
4037 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4038 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 4039 | #endif |
02f1175c JS |
4040 | return ret_val; |
4041 | } /* cy_ioctl */ | |
1da177e4 LT |
4042 | |
4043 | /* | |
4044 | * This routine allows the tty driver to be notified when | |
4045 | * device's termios settings have changed. Note that a | |
4046 | * well-designed tty driver should be prepared to accept the case | |
4047 | * where old == NULL, and try to do something rational. | |
4048 | */ | |
02f1175c | 4049 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 4050 | { |
cab9bdd1 | 4051 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
4052 | |
4053 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4054 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
4055 | #endif |
4056 | ||
02f1175c JS |
4057 | set_line_char(info); |
4058 | ||
4059 | if ((old_termios->c_cflag & CRTSCTS) && | |
4060 | !(tty->termios->c_cflag & CRTSCTS)) { | |
4061 | tty->hw_stopped = 0; | |
4062 | cy_start(tty); | |
4063 | } | |
1da177e4 | 4064 | #if 0 |
02f1175c JS |
4065 | /* |
4066 | * No need to wake up processes in open wait, since they | |
4067 | * sample the CLOCAL flag once, and don't recheck it. | |
4068 | * XXX It's not clear whether the current behavior is correct | |
4069 | * or not. Hence, this may change..... | |
4070 | */ | |
4071 | if (!(old_termios->c_cflag & CLOCAL) && | |
4072 | (tty->termios->c_cflag & CLOCAL)) | |
77451e53 | 4073 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 4074 | #endif |
02f1175c | 4075 | } /* cy_set_termios */ |
1da177e4 LT |
4076 | |
4077 | /* This function is used to send a high-priority XON/XOFF character to | |
4078 | the device. | |
4079 | */ | |
02f1175c | 4080 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 4081 | { |
cab9bdd1 | 4082 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
4083 | struct cyclades_card *card; |
4084 | int channel; | |
1da177e4 | 4085 | |
02f1175c | 4086 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
4087 | return; |
4088 | ||
02f1175c | 4089 | info->x_char = ch; |
1da177e4 LT |
4090 | |
4091 | if (ch) | |
02f1175c | 4092 | cy_start(tty); |
1da177e4 LT |
4093 | |
4094 | card = info->card; | |
875b206b | 4095 | channel = info->line - card->first_line; |
1da177e4 | 4096 | |
2693f485 | 4097 | if (cy_is_Z(card)) { |
02f1175c | 4098 | if (ch == STOP_CHAR(tty)) |
875b206b | 4099 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 4100 | else if (ch == START_CHAR(tty)) |
875b206b | 4101 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
4102 | } |
4103 | } | |
4104 | ||
4105 | /* This routine is called by the upper-layer tty layer to signal | |
4106 | that incoming characters should be throttled because the input | |
4107 | buffers are close to full. | |
4108 | */ | |
02f1175c | 4109 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 4110 | { |
cab9bdd1 | 4111 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4112 | struct cyclades_card *card; |
02f1175c JS |
4113 | unsigned long flags; |
4114 | void __iomem *base_addr; | |
875b206b | 4115 | int chip, channel, index; |
1da177e4 LT |
4116 | |
4117 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 4118 | char buf[64]; |
1da177e4 | 4119 | |
21719191 | 4120 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 4121 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
4122 | #endif |
4123 | ||
15ed6cc0 | 4124 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 4125 | return; |
02f1175c JS |
4126 | |
4127 | card = info->card; | |
4128 | ||
4129 | if (I_IXOFF(tty)) { | |
2693f485 | 4130 | if (!cy_is_Z(card)) |
02f1175c JS |
4131 | cy_send_xchar(tty, STOP_CHAR(tty)); |
4132 | else | |
4133 | info->throttle = 1; | |
4134 | } | |
1da177e4 | 4135 | |
02f1175c | 4136 | if (tty->termios->c_cflag & CRTSCTS) { |
875b206b | 4137 | channel = info->line - card->first_line; |
2693f485 | 4138 | if (!cy_is_Z(card)) { |
02f1175c JS |
4139 | chip = channel >> 2; |
4140 | channel &= 0x03; | |
875b206b JS |
4141 | index = card->bus_index; |
4142 | base_addr = card->base_addr + | |
02f1175c JS |
4143 | (cy_chip_offset[chip] << index); |
4144 | ||
9fa1b3b1 | 4145 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
4146 | cy_writeb(base_addr + (CyCAR << index), |
4147 | (u_char) channel); | |
4148 | if (info->rtsdtr_inv) { | |
4149 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4150 | ~CyDTR); | |
4151 | } else { | |
4152 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4153 | ~CyRTS); | |
4154 | } | |
9fa1b3b1 | 4155 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4156 | } else { |
4157 | info->throttle = 1; | |
4158 | } | |
4159 | } | |
02f1175c | 4160 | } /* cy_throttle */ |
1da177e4 LT |
4161 | |
4162 | /* | |
4163 | * This routine notifies the tty driver that it should signal | |
4164 | * that characters can now be sent to the tty without fear of | |
4165 | * overrunning the input buffers of the line disciplines. | |
4166 | */ | |
02f1175c | 4167 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 4168 | { |
cab9bdd1 | 4169 | struct cyclades_port *info = tty->driver_data; |
875b206b | 4170 | struct cyclades_card *card; |
02f1175c JS |
4171 | unsigned long flags; |
4172 | void __iomem *base_addr; | |
875b206b | 4173 | int chip, channel, index; |
1da177e4 LT |
4174 | |
4175 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
4176 | char buf[64]; |
4177 | ||
21719191 | 4178 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
15ed6cc0 | 4179 | tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); |
1da177e4 LT |
4180 | #endif |
4181 | ||
15ed6cc0 | 4182 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 4183 | return; |
1da177e4 | 4184 | |
02f1175c JS |
4185 | if (I_IXOFF(tty)) { |
4186 | if (info->x_char) | |
4187 | info->x_char = 0; | |
4188 | else | |
4189 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 4190 | } |
1da177e4 | 4191 | |
02f1175c JS |
4192 | if (tty->termios->c_cflag & CRTSCTS) { |
4193 | card = info->card; | |
875b206b | 4194 | channel = info->line - card->first_line; |
2693f485 | 4195 | if (!cy_is_Z(card)) { |
02f1175c JS |
4196 | chip = channel >> 2; |
4197 | channel &= 0x03; | |
875b206b JS |
4198 | index = card->bus_index; |
4199 | base_addr = card->base_addr + | |
02f1175c JS |
4200 | (cy_chip_offset[chip] << index); |
4201 | ||
9fa1b3b1 | 4202 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
4203 | cy_writeb(base_addr + (CyCAR << index), |
4204 | (u_char) channel); | |
4205 | if (info->rtsdtr_inv) { | |
4206 | cy_writeb(base_addr + (CyMSVR2 << index), | |
4207 | CyDTR); | |
4208 | } else { | |
4209 | cy_writeb(base_addr + (CyMSVR1 << index), | |
4210 | CyRTS); | |
4211 | } | |
9fa1b3b1 | 4212 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
4213 | } else { |
4214 | info->throttle = 0; | |
4215 | } | |
4216 | } | |
02f1175c | 4217 | } /* cy_unthrottle */ |
1da177e4 LT |
4218 | |
4219 | /* cy_start and cy_stop provide software output flow control as a | |
4220 | function of XON/XOFF, software CTS, and other such stuff. | |
4221 | */ | |
02f1175c | 4222 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 4223 | { |
02f1175c | 4224 | struct cyclades_card *cinfo; |
cab9bdd1 | 4225 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4226 | void __iomem *base_addr; |
4227 | int chip, channel, index; | |
4228 | unsigned long flags; | |
1da177e4 LT |
4229 | |
4230 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4231 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
4232 | #endif |
4233 | ||
02f1175c JS |
4234 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
4235 | return; | |
1da177e4 | 4236 | |
875b206b | 4237 | cinfo = info->card; |
02f1175c | 4238 | channel = info->line - cinfo->first_line; |
2693f485 | 4239 | if (!cy_is_Z(cinfo)) { |
02f1175c JS |
4240 | index = cinfo->bus_index; |
4241 | chip = channel >> 2; | |
4242 | channel &= 0x03; | |
9fa1b3b1 | 4243 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 4244 | |
9fa1b3b1 | 4245 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
4246 | cy_writeb(base_addr + (CyCAR << index), |
4247 | (u_char)(channel & 0x0003)); /* index channel */ | |
4248 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 4249 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
9fa1b3b1 | 4250 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 4251 | } |
02f1175c | 4252 | } /* cy_stop */ |
1da177e4 | 4253 | |
02f1175c | 4254 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 4255 | { |
02f1175c | 4256 | struct cyclades_card *cinfo; |
cab9bdd1 | 4257 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
4258 | void __iomem *base_addr; |
4259 | int chip, channel, index; | |
4260 | unsigned long flags; | |
1da177e4 LT |
4261 | |
4262 | #ifdef CY_DEBUG_OTHER | |
21719191 | 4263 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
4264 | #endif |
4265 | ||
02f1175c JS |
4266 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
4267 | return; | |
1da177e4 | 4268 | |
875b206b | 4269 | cinfo = info->card; |
02f1175c JS |
4270 | channel = info->line - cinfo->first_line; |
4271 | index = cinfo->bus_index; | |
2693f485 | 4272 | if (!cy_is_Z(cinfo)) { |
02f1175c JS |
4273 | chip = channel >> 2; |
4274 | channel &= 0x03; | |
9fa1b3b1 | 4275 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 4276 | |
9fa1b3b1 | 4277 | spin_lock_irqsave(&cinfo->card_lock, flags); |
15ed6cc0 AC |
4278 | cy_writeb(base_addr + (CyCAR << index), |
4279 | (u_char) (channel & 0x0003)); /* index channel */ | |
02f1175c | 4280 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 4281 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 4282 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 4283 | } |
02f1175c | 4284 | } /* cy_start */ |
1da177e4 | 4285 | |
1da177e4 LT |
4286 | /* |
4287 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
4288 | */ | |
02f1175c | 4289 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 4290 | { |
cab9bdd1 | 4291 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 4292 | |
1da177e4 | 4293 | #ifdef CY_DEBUG_OTHER |
21719191 | 4294 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
4295 | #endif |
4296 | ||
02f1175c JS |
4297 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
4298 | return; | |
1da177e4 | 4299 | |
02f1175c JS |
4300 | cy_flush_buffer(tty); |
4301 | shutdown(info); | |
77451e53 | 4302 | info->port.count = 0; |
1da177e4 | 4303 | #ifdef CY_DEBUG_COUNT |
21719191 JS |
4304 | printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n", |
4305 | current->pid); | |
1da177e4 | 4306 | #endif |
77451e53 AC |
4307 | info->port.tty = NULL; |
4308 | info->port.flags &= ~ASYNC_NORMAL_ACTIVE; | |
4309 | wake_up_interruptible(&info->port.open_wait); | |
02f1175c | 4310 | } /* cy_hangup */ |
1da177e4 LT |
4311 | |
4312 | /* | |
4313 | * --------------------------------------------------------------------- | |
4314 | * cy_init() and friends | |
4315 | * | |
4316 | * cy_init() is called at boot-time to initialize the serial driver. | |
4317 | * --------------------------------------------------------------------- | |
4318 | */ | |
4319 | ||
dd025c0c | 4320 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
4321 | { |
4322 | struct cyclades_port *info; | |
963118ee | 4323 | unsigned int port; |
0809e267 | 4324 | unsigned short chip_number; |
0809e267 | 4325 | |
3046d50e | 4326 | spin_lock_init(&cinfo->card_lock); |
963118ee | 4327 | cinfo->intr_enabled = 0; |
3046d50e | 4328 | |
963118ee JS |
4329 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
4330 | GFP_KERNEL); | |
dd025c0c JS |
4331 | if (cinfo->ports == NULL) { |
4332 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
4333 | return -ENOMEM; | |
4334 | } | |
4335 | ||
963118ee | 4336 | for (port = cinfo->first_line; port < cinfo->first_line + cinfo->nports; |
3046d50e | 4337 | port++) { |
dd025c0c | 4338 | info = &cinfo->ports[port - cinfo->first_line]; |
44b7d1b3 | 4339 | tty_port_init(&info->port); |
3046d50e | 4340 | info->magic = CYCLADES_MAGIC; |
875b206b | 4341 | info->card = cinfo; |
3046d50e | 4342 | info->line = port; |
3046d50e | 4343 | |
44b7d1b3 AC |
4344 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
4345 | info->port.close_delay = 5 * HZ / 10; | |
77451e53 | 4346 | info->port.flags = STD_COM_FLAGS; |
2c7fea99 | 4347 | init_completion(&info->shutdown_wait); |
3046d50e JS |
4348 | init_waitqueue_head(&info->delta_msr_wait); |
4349 | ||
2693f485 | 4350 | if (cy_is_Z(cinfo)) { |
0809e267 | 4351 | info->type = PORT_STARTECH; |
101b8159 | 4352 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
4353 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
4354 | else | |
3046d50e | 4355 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 4356 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
4357 | setup_timer(&cyz_rx_full_timer[port], |
4358 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 4359 | #endif |
3046d50e | 4360 | } else { |
963118ee | 4361 | int index = cinfo->bus_index; |
0809e267 | 4362 | info->type = PORT_CIRRUS; |
0809e267 | 4363 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 4364 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
4365 | info->cor2 = CyETC; |
4366 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 4367 | |
0809e267 | 4368 | chip_number = (port - cinfo->first_line) / 4; |
15ed6cc0 AC |
4369 | info->chip_rev = readb(cinfo->base_addr + |
4370 | (cy_chip_offset[chip_number] << index) + | |
4371 | (CyGFRCR << index)); | |
4372 | ||
4373 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
4374 | /* It is a CD1400 rev. J or later */ |
4375 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
4376 | info->tco = baud_co_60[13]; /* Tx CO */ | |
4377 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
4378 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
4379 | info->rtsdtr_inv = 1; |
4380 | } else { | |
4381 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
4382 | info->tco = baud_co_25[13]; /* Tx CO */ | |
4383 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
4384 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
4385 | info->rtsdtr_inv = 0; |
4386 | } | |
3046d50e JS |
4387 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
4388 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 4389 | } |
3046d50e | 4390 | |
0809e267 | 4391 | } |
3046d50e JS |
4392 | |
4393 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 4394 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
4395 | mod_timer(&cyz_timerlist, jiffies + 1); |
4396 | #ifdef CY_PCI_DEBUG | |
4397 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
4398 | #endif | |
4399 | } | |
4400 | #endif | |
dd025c0c | 4401 | return 0; |
0809e267 JS |
4402 | } |
4403 | ||
1da177e4 LT |
4404 | /* initialize chips on Cyclom-Y card -- return number of valid |
4405 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
4406 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
4407 | int index) | |
1da177e4 | 4408 | { |
02f1175c JS |
4409 | unsigned int chip_number; |
4410 | void __iomem *base_addr; | |
4411 | ||
4412 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
4413 | /* Cy_HwReset is 0x1400 */ | |
4414 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
4415 | /* Cy_ClrIntr is 0x1800 */ | |
4416 | udelay(500L); | |
4417 | ||
15ed6cc0 AC |
4418 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
4419 | chip_number++) { | |
02f1175c JS |
4420 | base_addr = |
4421 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
4422 | mdelay(1); | |
db05c3b1 | 4423 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
4424 | /************* |
4425 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
4426 | chip_number, (unsigned long)base_addr); | |
4427 | *************/ | |
4428 | return chip_number; | |
4429 | } | |
4430 | ||
4431 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
4432 | udelay(10L); | |
4433 | ||
4434 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
4435 | cannot distinguish between references to chip 0 and a non- | |
4436 | existent chip 4. If the preceding clearing of the supposed | |
4437 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
4438 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
4439 | */ | |
db05c3b1 | 4440 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
4441 | (cy_chip_offset[0] << index) + |
4442 | (CyGFRCR << index)) == 0) { | |
4443 | return chip_number; | |
4444 | } | |
4445 | ||
4446 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
4447 | mdelay(1); | |
4448 | ||
db05c3b1 | 4449 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
4450 | /* |
4451 | printk(" chip #%d at %#6lx is not responding ", | |
4452 | chip_number, (unsigned long)base_addr); | |
4453 | printk("(GFRCR stayed 0)\n", | |
4454 | */ | |
4455 | return chip_number; | |
4456 | } | |
db05c3b1 | 4457 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
4458 | 0x40) { |
4459 | /* | |
4460 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
4461 | "%#2x)\n", | |
4462 | chip_number, (unsigned long)base_addr, | |
4463 | base_addr[CyGFRCR<<index]); | |
4464 | */ | |
4465 | return chip_number; | |
4466 | } | |
4467 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 4468 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
4469 | /* It is a CD1400 rev. J or later */ |
4470 | /* Impossible to reach 5ms with this chip. | |
4471 | Changed to 2ms instead (f = 500 Hz). */ | |
4472 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
4473 | } else { | |
4474 | /* f = 200 Hz */ | |
4475 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
4476 | } | |
1da177e4 | 4477 | |
02f1175c JS |
4478 | /* |
4479 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
4480 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 4481 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
4482 | */ |
4483 | } | |
4484 | return chip_number; | |
4485 | } /* cyy_init_card */ | |
1da177e4 LT |
4486 | |
4487 | /* | |
4488 | * --------------------------------------------------------------------- | |
4489 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
4490 | * sets global variables and return the number of ISA boards found. | |
4491 | * --------------------------------------------------------------------- | |
4492 | */ | |
02f1175c | 4493 | static int __init cy_detect_isa(void) |
1da177e4 LT |
4494 | { |
4495 | #ifdef CONFIG_ISA | |
02f1175c JS |
4496 | unsigned short cy_isa_irq, nboard; |
4497 | void __iomem *cy_isa_address; | |
4498 | unsigned short i, j, cy_isa_nchan; | |
1da177e4 | 4499 | #ifdef MODULE |
02f1175c | 4500 | int isparam = 0; |
1da177e4 LT |
4501 | #endif |
4502 | ||
02f1175c | 4503 | nboard = 0; |
1da177e4 LT |
4504 | |
4505 | #ifdef MODULE | |
4506 | /* Check for module parameters */ | |
02f1175c JS |
4507 | for (i = 0; i < NR_CARDS; i++) { |
4508 | if (maddr[i] || i) { | |
4509 | isparam = 1; | |
4510 | cy_isa_addresses[i] = maddr[i]; | |
4511 | } | |
4512 | if (!maddr[i]) | |
4513 | break; | |
1da177e4 LT |
4514 | } |
4515 | #endif | |
4516 | ||
02f1175c JS |
4517 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
4518 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
4519 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 4520 | if (isa_address == 0x0000) |
096dcfce | 4521 | return nboard; |
1da177e4 | 4522 | |
02f1175c | 4523 | /* probe for CD1400... */ |
cd989b3a | 4524 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
4525 | if (cy_isa_address == NULL) { |
4526 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
4527 | "address\n"); | |
4528 | continue; | |
4529 | } | |
02f1175c JS |
4530 | cy_isa_nchan = CyPORTS_PER_CHIP * |
4531 | cyy_init_card(cy_isa_address, 0); | |
4532 | if (cy_isa_nchan == 0) { | |
3137553d | 4533 | iounmap(cy_isa_address); |
02f1175c JS |
4534 | continue; |
4535 | } | |
1da177e4 LT |
4536 | #ifdef MODULE |
4537 | if (isparam && irq[i]) | |
02f1175c | 4538 | cy_isa_irq = irq[i]; |
1da177e4 LT |
4539 | else |
4540 | #endif | |
02f1175c JS |
4541 | /* find out the board's irq by probing */ |
4542 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
4543 | if (cy_isa_irq == 0) { | |
21719191 JS |
4544 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
4545 | "IRQ could not be detected.\n", | |
02f1175c | 4546 | (unsigned long)cy_isa_address); |
3137553d | 4547 | iounmap(cy_isa_address); |
02f1175c JS |
4548 | continue; |
4549 | } | |
4550 | ||
4551 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
4552 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4553 | "more channels are available. Change NR_PORTS " | |
4554 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 4555 | (unsigned long)cy_isa_address); |
3137553d | 4556 | iounmap(cy_isa_address); |
096dcfce | 4557 | return nboard; |
02f1175c JS |
4558 | } |
4559 | /* fill the next cy_card structure available */ | |
4560 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 4561 | if (cy_card[j].base_addr == NULL) |
02f1175c JS |
4562 | break; |
4563 | } | |
4564 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
4565 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
4566 | "more cards can be used. Change NR_CARDS in " | |
4567 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 4568 | (unsigned long)cy_isa_address); |
3137553d | 4569 | iounmap(cy_isa_address); |
096dcfce | 4570 | return nboard; |
02f1175c JS |
4571 | } |
4572 | ||
4573 | /* allocate IRQ */ | |
4574 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
4575 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
4576 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
4577 | "could not allocate IRQ#%d.\n", | |
4578 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 4579 | iounmap(cy_isa_address); |
096dcfce | 4580 | return nboard; |
02f1175c JS |
4581 | } |
4582 | ||
4583 | /* set cy_card */ | |
4584 | cy_card[j].base_addr = cy_isa_address; | |
97e87f8e | 4585 | cy_card[j].ctl_addr.p9050 = NULL; |
02f1175c JS |
4586 | cy_card[j].irq = (int)cy_isa_irq; |
4587 | cy_card[j].bus_index = 0; | |
4588 | cy_card[j].first_line = cy_next_channel; | |
963118ee JS |
4589 | cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; |
4590 | cy_card[j].nports = cy_isa_nchan; | |
3137553d JS |
4591 | if (cy_init_card(&cy_card[j])) { |
4592 | cy_card[j].base_addr = NULL; | |
4593 | free_irq(cy_isa_irq, &cy_card[j]); | |
4594 | iounmap(cy_isa_address); | |
4595 | continue; | |
4596 | } | |
02f1175c JS |
4597 | nboard++; |
4598 | ||
21719191 JS |
4599 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
4600 | "%d channels starting from port %d\n", | |
02f1175c JS |
4601 | j + 1, (unsigned long)cy_isa_address, |
4602 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
4603 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
4604 | ||
6ad1ccc1 JS |
4605 | for (j = cy_next_channel; |
4606 | j < cy_next_channel + cy_isa_nchan; j++) | |
4607 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
4608 | cy_next_channel += cy_isa_nchan; |
4609 | } | |
096dcfce | 4610 | return nboard; |
1da177e4 | 4611 | #else |
096dcfce | 4612 | return 0; |
02f1175c JS |
4613 | #endif /* CONFIG_ISA */ |
4614 | } /* cy_detect_isa */ | |
1da177e4 | 4615 | |
58936d8d | 4616 | #ifdef CONFIG_PCI |
054f5b0a JS |
4617 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
4618 | { | |
4619 | unsigned int a; | |
4620 | ||
4621 | for (a = 0; a < size && *str; a++, str++) | |
4622 | if (*str & 0x80) | |
4623 | return -EINVAL; | |
4624 | ||
4625 | for (; a < size; a++, str++) | |
4626 | if (*str) | |
4627 | return -EINVAL; | |
4628 | ||
4629 | return 0; | |
4630 | } | |
4631 | ||
f61e761e | 4632 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
4633 | unsigned int size) |
4634 | { | |
4635 | for (; size > 0; size--) { | |
4636 | cy_writel(fpga, *data++); | |
4637 | udelay(10); | |
4638 | } | |
4639 | } | |
4640 | ||
4641 | static void __devinit plx_init(struct pci_dev *pdev, int irq, | |
4642 | struct RUNTIME_9060 __iomem *addr) | |
1da177e4 | 4643 | { |
02f1175c | 4644 | /* Reset PLX */ |
054f5b0a | 4645 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 4646 | udelay(100L); |
054f5b0a | 4647 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
4648 | |
4649 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 4650 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 4651 | udelay(100L); |
054f5b0a JS |
4652 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
4653 | ||
4654 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
4655 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
4656 | * registers. This will remain here until we find a permanent fix. | |
4657 | */ | |
4658 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
4659 | } | |
4660 | ||
4661 | static int __devinit __cyz_load_fw(const struct firmware *fw, | |
4662 | const char *name, const u32 mailbox, void __iomem *base, | |
4663 | void __iomem *fpga) | |
4664 | { | |
f61e761e DW |
4665 | const void *ptr = fw->data; |
4666 | const struct zfile_header *h = ptr; | |
4667 | const struct zfile_config *c, *cs; | |
4668 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
4669 | unsigned int a, tmp, len = fw->size; |
4670 | #define BAD_FW KERN_ERR "Bad firmware: " | |
4671 | if (len < sizeof(*h)) { | |
4672 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
4673 | return -EINVAL; | |
4674 | } | |
4675 | ||
4676 | cs = ptr + h->config_offset; | |
4677 | bs = ptr + h->block_offset; | |
4678 | ||
4679 | if ((void *)(cs + h->n_config) > ptr + len || | |
4680 | (void *)(bs + h->n_blocks) > ptr + len) { | |
4681 | printk(BAD_FW "too short"); | |
4682 | return -EINVAL; | |
4683 | } | |
4684 | ||
4685 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
4686 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
4687 | printk(BAD_FW "bad formatted header string\n"); | |
4688 | return -EINVAL; | |
4689 | } | |
4690 | ||
4691 | if (strncmp(name, h->name, sizeof(h->name))) { | |
4692 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
4693 | return -EINVAL; | |
4694 | } | |
4695 | ||
4696 | tmp = 0; | |
4697 | for (c = cs; c < cs + h->n_config; c++) { | |
4698 | for (a = 0; a < c->n_blocks; a++) | |
4699 | if (c->block_list[a] > h->n_blocks) { | |
4700 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
4701 | return -EINVAL; | |
4702 | } | |
4703 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
4704 | tmp++; | |
4705 | } | |
4706 | if (!tmp) { | |
4707 | printk(BAD_FW "nothing appropriate\n"); | |
4708 | return -EINVAL; | |
4709 | } | |
4710 | ||
4711 | for (b = bs; b < bs + h->n_blocks; b++) | |
4712 | if (b->file_offset + b->size > len) { | |
4713 | printk(BAD_FW "bad block data offset\n"); | |
4714 | return -EINVAL; | |
4715 | } | |
4716 | ||
4717 | /* everything is OK, let's seek'n'load it */ | |
4718 | for (c = cs; c < cs + h->n_config; c++) | |
4719 | if (c->mailbox == mailbox && c->function == 0) | |
4720 | break; | |
4721 | ||
4722 | for (a = 0; a < c->n_blocks; a++) { | |
4723 | b = &bs[c->block_list[a]]; | |
4724 | if (b->type == ZBLOCK_FPGA) { | |
4725 | if (fpga != NULL) | |
4726 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
4727 | b->size); | |
4728 | } else { | |
4729 | if (base != NULL) | |
4730 | memcpy_toio(base + b->ram_offset, | |
4731 | ptr + b->file_offset, b->size); | |
4732 | } | |
4733 | } | |
4734 | #undef BAD_FW | |
4735 | return 0; | |
4736 | } | |
4737 | ||
4738 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, | |
4739 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) | |
4740 | { | |
4741 | const struct firmware *fw; | |
4742 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
4743 | struct CUSTOM_REG __iomem *cust = base_addr; | |
4744 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 4745 | void __iomem *tmp; |
963118ee | 4746 | u32 mailbox, status, nchan; |
054f5b0a JS |
4747 | unsigned int i; |
4748 | int retval; | |
4749 | ||
4750 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
4751 | if (retval) { | |
4752 | dev_err(&pdev->dev, "can't get firmware\n"); | |
4753 | goto err; | |
4754 | } | |
4755 | ||
4756 | /* Check whether the firmware is already loaded and running. If | |
4757 | positive, skip this board */ | |
2693f485 | 4758 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
4759 | u32 cntval = readl(base_addr + 0x190); |
4760 | ||
4761 | udelay(100); | |
4762 | if (cntval != readl(base_addr + 0x190)) { | |
4763 | /* FW counter is working, FW is running */ | |
4764 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
4765 | "Skipping board.\n"); | |
4766 | retval = 0; | |
4767 | goto err_rel; | |
4768 | } | |
4769 | } | |
4770 | ||
4771 | /* start boot */ | |
4772 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
4773 | ~0x00030800UL); | |
4774 | ||
4775 | mailbox = readl(&ctl_addr->mail_box_0); | |
4776 | ||
2693f485 | 4777 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
4778 | /* stops CPU and set window to beginning of RAM */ |
4779 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
4780 | cy_writel(&cust->cpu_stop, 0); | |
4781 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
4782 | udelay(100); | |
4783 | } | |
4784 | ||
4785 | plx_init(pdev, irq, ctl_addr); | |
4786 | ||
4787 | if (mailbox != 0) { | |
4788 | /* load FPGA */ | |
4789 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
4790 | base_addr); | |
4791 | if (retval) | |
4792 | goto err_rel; | |
2693f485 | 4793 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
4794 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
4795 | "not loaded\n"); | |
4796 | goto err_rel; | |
4797 | } | |
4798 | } | |
4799 | ||
4800 | /* stops CPU and set window to beginning of RAM */ | |
4801 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
4802 | cy_writel(&cust->cpu_stop, 0); | |
4803 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
4804 | udelay(100); | |
4805 | ||
4806 | /* clear memory */ | |
c4923b4f | 4807 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
4808 | cy_writeb(tmp, 255); |
4809 | if (mailbox != 0) { | |
4810 | /* set window to last 512K of RAM */ | |
4811 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 4812 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
4813 | cy_writeb(tmp, 255); |
4814 | /* set window to beginning of RAM */ | |
4815 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
4816 | } |
4817 | ||
4818 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
4819 | release_firmware(fw); | |
4820 | if (retval) | |
4821 | goto err; | |
4822 | ||
4823 | /* finish boot and start boards */ | |
4824 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
4825 | cy_writel(&cust->cpu_start, 0); | |
4826 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
4827 | i = 0; | |
4828 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
4829 | msleep(100); | |
4830 | if (status != ZFIRM_ID) { | |
4831 | if (status == ZFIRM_HLT) { | |
4832 | dev_err(&pdev->dev, "you need an external power supply " | |
4833 | "for this number of ports. Firmware halted and " | |
4834 | "board reset.\n"); | |
4835 | retval = -EIO; | |
4836 | goto err; | |
4837 | } | |
4838 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
4839 | "some more time\n", status); | |
4840 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
4841 | i++ < 200) | |
4842 | msleep(100); | |
4843 | if (status != ZFIRM_ID) { | |
4844 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
4845 | "Giving up. (fid->signature = 0x%x)\n", | |
4846 | status); | |
4847 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
4848 | "upgrading the FW, please power cycle the " | |
4849 | "system before loading the new FW to the " | |
4850 | "Cyclades-Z.\n"); | |
4851 | ||
2693f485 | 4852 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
4853 | plx_init(pdev, irq, ctl_addr); |
4854 | ||
4855 | retval = -EIO; | |
4856 | goto err; | |
4857 | } | |
4858 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
4859 | i / 10); | |
4860 | } | |
4861 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
4862 | ||
4863 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
4864 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
4865 | base_addr + readl(&fid->zfwctrl_addr)); | |
4866 | ||
963118ee | 4867 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 4868 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 4869 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 4870 | |
963118ee | 4871 | if (nchan == 0) { |
054f5b0a JS |
4872 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
4873 | "check the connection between the Z host card and the " | |
4874 | "serial expanders.\n"); | |
4875 | ||
2693f485 | 4876 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
4877 | plx_init(pdev, irq, ctl_addr); |
4878 | ||
4879 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
4880 | "reset.\n"); | |
4881 | retval = 0; | |
4882 | goto err; | |
4883 | } | |
4884 | ||
4885 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
4886 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
4887 | ||
4888 | /* | |
4889 | Early firmware failed to start looking for commands. | |
4890 | This enables firmware interrupts for those commands. | |
4891 | */ | |
4892 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
4893 | (1 << 17)); | |
4894 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
4895 | 0x00030800UL); | |
4896 | ||
963118ee | 4897 | return nchan; |
054f5b0a JS |
4898 | err_rel: |
4899 | release_firmware(fw); | |
4900 | err: | |
4901 | return retval; | |
1da177e4 LT |
4902 | } |
4903 | ||
58936d8d JS |
4904 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
4905 | const struct pci_device_id *ent) | |
1da177e4 | 4906 | { |
3137553d JS |
4907 | void __iomem *addr0 = NULL, *addr2 = NULL; |
4908 | char *card_name = NULL; | |
101b8159 | 4909 | u32 uninitialized_var(mailbox); |
3137553d JS |
4910 | unsigned int device_id, nchan = 0, card_no, i; |
4911 | unsigned char plx_ver; | |
4912 | int retval, irq; | |
02f1175c | 4913 | |
58936d8d JS |
4914 | retval = pci_enable_device(pdev); |
4915 | if (retval) { | |
4916 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 4917 | goto err; |
58936d8d | 4918 | } |
1da177e4 | 4919 | |
58936d8d | 4920 | /* read PCI configuration area */ |
3137553d | 4921 | irq = pdev->irq; |
58936d8d | 4922 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 4923 | |
3137553d JS |
4924 | #if defined(__alpha__) |
4925 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
4926 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
4927 | "addresses on Alpha systems.\n"); | |
4928 | retval = -EIO; | |
4929 | goto err_dis; | |
4930 | } | |
4931 | #endif | |
4932 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
4933 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
4934 | "addresses\n"); | |
4935 | retval = -EIO; | |
4936 | goto err_dis; | |
4937 | } | |
4938 | ||
4939 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
4940 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
4941 | "it...\n"); | |
4942 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
4943 | } | |
4944 | ||
4945 | retval = pci_request_regions(pdev, "cyclades"); | |
4946 | if (retval) { | |
4947 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
4948 | goto err_dis; | |
4949 | } | |
4950 | ||
4951 | retval = -EIO; | |
58936d8d JS |
4952 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
4953 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 4954 | card_name = "Cyclom-Y"; |
1da177e4 | 4955 | |
24e6fd4c JS |
4956 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
4957 | CyPCI_Yctl); | |
3137553d JS |
4958 | if (addr0 == NULL) { |
4959 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
4960 | goto err_reg; | |
58936d8d | 4961 | } |
24e6fd4c JS |
4962 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
4963 | CyPCI_Ywin); | |
3137553d JS |
4964 | if (addr2 == NULL) { |
4965 | dev_err(&pdev->dev, "can't remap base region\n"); | |
4966 | goto err_unmap; | |
58936d8d | 4967 | } |
1da177e4 | 4968 | |
3137553d JS |
4969 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
4970 | if (nchan == 0) { | |
21719191 JS |
4971 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
4972 | "Serial-Modules\n"); | |
c847d47c | 4973 | goto err_unmap; |
58936d8d | 4974 | } |
58936d8d | 4975 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 4976 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 4977 | |
24e6fd4c JS |
4978 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
4979 | CyPCI_Zctl); | |
3137553d JS |
4980 | if (addr0 == NULL) { |
4981 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
4982 | goto err_reg; | |
4983 | } | |
58936d8d JS |
4984 | |
4985 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
4986 | cy_writew(&ctl_addr->intr_ctrl_stat, |
4987 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 4988 | |
054f5b0a | 4989 | plx_init(pdev, irq, addr0); |
02f1175c | 4990 | |
101b8159 | 4991 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 4992 | |
24e6fd4c JS |
4993 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
4994 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
4995 | if (addr2 == NULL) { |
4996 | dev_err(&pdev->dev, "can't remap base region\n"); | |
4997 | goto err_unmap; | |
58936d8d JS |
4998 | } |
4999 | ||
5000 | if (mailbox == ZE_V1) { | |
3137553d | 5001 | card_name = "Cyclades-Ze"; |
58936d8d | 5002 | } else { |
3137553d | 5003 | card_name = "Cyclades-8Zo"; |
1da177e4 | 5004 | #ifdef CY_PCI_DEBUG |
3137553d JS |
5005 | if (mailbox == ZO_V1) { |
5006 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
5007 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
5008 | "id %lx, ver %lx\n", (ulong)(0xff & | |
5009 | readl(&((struct CUSTOM_REG *)addr2)-> | |
5010 | fpga_id)), (ulong)(0xff & | |
5011 | readl(&((struct CUSTOM_REG *)addr2)-> | |
5012 | fpga_version))); | |
5013 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
5014 | } else { | |
5015 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
5016 | "Cyclades-Z board. FPGA not loaded\n"); | |
5017 | } | |
1da177e4 | 5018 | #endif |
3137553d JS |
5019 | /* The following clears the firmware id word. This |
5020 | ensures that the driver will not attempt to talk to | |
5021 | the board until it has been properly initialized. | |
5022 | */ | |
5023 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
5024 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 5025 | } |
ace08c3c JS |
5026 | |
5027 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 5028 | if (retval <= 0) |
ace08c3c | 5029 | goto err_unmap; |
963118ee | 5030 | nchan = retval; |
3137553d JS |
5031 | } |
5032 | ||
5033 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
5034 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
5035 | "channels are available. Change NR_PORTS in " | |
5036 | "cyclades.c and recompile kernel.\n"); | |
5037 | goto err_unmap; | |
5038 | } | |
5039 | /* fill the next cy_card structure available */ | |
5040 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
5041 | if (cy_card[card_no].base_addr == NULL) | |
5042 | break; | |
5043 | } | |
5044 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
5045 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
5046 | "more cards can be used. Change NR_CARDS in " | |
5047 | "cyclades.c and recompile kernel.\n"); | |
5048 | goto err_unmap; | |
5049 | } | |
5050 | ||
5051 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
5052 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
5053 | /* allocate IRQ */ | |
5054 | retval = request_irq(irq, cyy_interrupt, | |
5055 | IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); | |
5056 | if (retval) { | |
5057 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
5058 | goto err_unmap; | |
58936d8d | 5059 | } |
963118ee | 5060 | cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 5061 | } else { |
101b8159 JS |
5062 | cy_card[card_no].hw_ver = mailbox; |
5063 | cy_card[card_no].num_chips = (unsigned int)-1; | |
02f1175c | 5064 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 5065 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
5066 | if (irq != 0 && irq != 255) { |
5067 | retval = request_irq(irq, cyz_interrupt, | |
58936d8d | 5068 | IRQF_SHARED, "Cyclades-Z", |
3137553d | 5069 | &cy_card[card_no]); |
58936d8d | 5070 | if (retval) { |
21719191 | 5071 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 5072 | goto err_unmap; |
02f1175c | 5073 | } |
58936d8d | 5074 | } |
02f1175c | 5075 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 5076 | } |
02f1175c | 5077 | |
3137553d JS |
5078 | /* set cy_card */ |
5079 | cy_card[card_no].base_addr = addr2; | |
97e87f8e | 5080 | cy_card[card_no].ctl_addr.p9050 = addr0; |
3137553d JS |
5081 | cy_card[card_no].irq = irq; |
5082 | cy_card[card_no].bus_index = 1; | |
5083 | cy_card[card_no].first_line = cy_next_channel; | |
963118ee | 5084 | cy_card[card_no].nports = nchan; |
3137553d JS |
5085 | retval = cy_init_card(&cy_card[card_no]); |
5086 | if (retval) | |
5087 | goto err_null; | |
58936d8d | 5088 | |
3137553d | 5089 | pci_set_drvdata(pdev, &cy_card[card_no]); |
58936d8d | 5090 | |
3137553d JS |
5091 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
5092 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
5093 | /* enable interrupts in the PCI interface */ | |
5094 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
5095 | switch (plx_ver) { | |
5096 | case PLX_9050: | |
3137553d JS |
5097 | cy_writeb(addr0 + 0x4c, 0x43); |
5098 | break; | |
5099 | ||
5100 | case PLX_9060: | |
5101 | case PLX_9080: | |
5102 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
5103 | { |
5104 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
5105 | plx_init(pdev, irq, ctl_addr); | |
5106 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
5107 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
5108 | break; |
5109 | } | |
97e87f8e | 5110 | } |
58936d8d JS |
5111 | } |
5112 | ||
3137553d JS |
5113 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
5114 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
5115 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) | |
5116 | tty_register_device(cy_serial_driver, i, &pdev->dev); | |
5117 | cy_next_channel += nchan; | |
5118 | ||
58936d8d | 5119 | return 0; |
3137553d JS |
5120 | err_null: |
5121 | cy_card[card_no].base_addr = NULL; | |
5122 | free_irq(irq, &cy_card[card_no]); | |
5123 | err_unmap: | |
24e6fd4c | 5124 | iounmap(addr0); |
3137553d | 5125 | if (addr2) |
24e6fd4c | 5126 | iounmap(addr2); |
3137553d JS |
5127 | err_reg: |
5128 | pci_release_regions(pdev); | |
5129 | err_dis: | |
5130 | pci_disable_device(pdev); | |
5131 | err: | |
5132 | return retval; | |
58936d8d | 5133 | } |
58936d8d | 5134 | |
6747cd93 | 5135 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 5136 | { |
38d09093 | 5137 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 5138 | unsigned int i; |
38d09093 | 5139 | |
85c93fa9 | 5140 | /* non-Z with old PLX */ |
2693f485 | 5141 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 5142 | PLX_9050) |
97e87f8e | 5143 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
5144 | else |
5145 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 5146 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 5147 | #endif |
97e87f8e JS |
5148 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
5149 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
5150 | ~0x0900); | |
85c93fa9 | 5151 | |
24e6fd4c | 5152 | iounmap(cinfo->base_addr); |
97e87f8e JS |
5153 | if (cinfo->ctl_addr.p9050) |
5154 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
5155 | if (cinfo->irq |
5156 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 5157 | && !cy_is_Z(cinfo) |
38d09093 JS |
5158 | #endif /* CONFIG_CYZ_INTR */ |
5159 | ) | |
5160 | free_irq(cinfo->irq, cinfo); | |
5161 | pci_release_regions(pdev); | |
5162 | ||
5163 | cinfo->base_addr = NULL; | |
6ad1ccc1 JS |
5164 | for (i = cinfo->first_line; i < cinfo->first_line + |
5165 | cinfo->nports; i++) | |
5166 | tty_unregister_device(cy_serial_driver, i); | |
dd025c0c JS |
5167 | cinfo->nports = 0; |
5168 | kfree(cinfo->ports); | |
38d09093 JS |
5169 | } |
5170 | ||
6747cd93 JS |
5171 | static struct pci_driver cy_pci_driver = { |
5172 | .name = "cyclades", | |
5173 | .id_table = cy_pci_dev_id, | |
5174 | .probe = cy_pci_probe, | |
5175 | .remove = __devexit_p(cy_pci_remove) | |
5176 | }; | |
5177 | #endif | |
5178 | ||
444697d6 | 5179 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 5180 | { |
02f1175c | 5181 | struct cyclades_port *info; |
dd025c0c | 5182 | unsigned int i, j; |
02f1175c JS |
5183 | __u32 cur_jifs = jiffies; |
5184 | ||
444697d6 | 5185 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
5186 | "IdleIn Overruns Ldisc\n"); |
5187 | ||
02f1175c | 5188 | /* Output one line for each known port */ |
dd025c0c JS |
5189 | for (i = 0; i < NR_CARDS; i++) |
5190 | for (j = 0; j < cy_card[i].nports; j++) { | |
5191 | info = &cy_card[i].ports[j]; | |
5192 | ||
77451e53 | 5193 | if (info->port.count) |
444697d6 | 5194 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
5195 | "%10lu %8lu %9lu %6ld\n", info->line, |
5196 | (cur_jifs - info->idle_stats.in_use) / | |
5197 | HZ, info->idle_stats.xmit_bytes, | |
5198 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
5199 | HZ, info->idle_stats.recv_bytes, | |
5200 | (cur_jifs - info->idle_stats.recv_idle)/ | |
5201 | HZ, info->idle_stats.overruns, | |
a352def2 | 5202 | /* FIXME: double check locking */ |
c65c9bc3 | 5203 | (long)info->port.tty->ldisc->ops->num); |
dd025c0c | 5204 | else |
444697d6 | 5205 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
5206 | "%10lu %8lu %9lu %6ld\n", |
5207 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 5208 | } |
444697d6 AD |
5209 | return 0; |
5210 | } | |
5211 | ||
5212 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
5213 | { | |
5214 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
5215 | } |
5216 | ||
444697d6 AD |
5217 | static const struct file_operations cyclades_proc_fops = { |
5218 | .owner = THIS_MODULE, | |
5219 | .open = cyclades_proc_open, | |
5220 | .read = seq_read, | |
5221 | .llseek = seq_lseek, | |
5222 | .release = single_release, | |
5223 | }; | |
5224 | ||
1da177e4 LT |
5225 | /* The serial driver boot-time initialization code! |
5226 | Hardware I/O ports are mapped to character special devices on a | |
5227 | first found, first allocated manner. That is, this code searches | |
5228 | for Cyclom cards in the system. As each is found, it is probed | |
5229 | to discover how many chips (and thus how many ports) are present. | |
5230 | These ports are mapped to the tty ports 32 and upward in monotonic | |
5231 | fashion. If an 8-port card is replaced with a 16-port card, the | |
5232 | port mapping on a following card will shift. | |
5233 | ||
5234 | This approach is different from what is used in the other serial | |
5235 | device driver because the Cyclom is more properly a multiplexer, | |
5236 | not just an aggregation of serial ports on one card. | |
5237 | ||
5238 | If there are more cards with more ports than have been | |
5239 | statically allocated above, a warning is printed and the | |
5240 | extra ports are ignored. | |
5241 | */ | |
5242 | ||
b68e31d0 | 5243 | static const struct tty_operations cy_ops = { |
02f1175c JS |
5244 | .open = cy_open, |
5245 | .close = cy_close, | |
5246 | .write = cy_write, | |
5247 | .put_char = cy_put_char, | |
5248 | .flush_chars = cy_flush_chars, | |
5249 | .write_room = cy_write_room, | |
5250 | .chars_in_buffer = cy_chars_in_buffer, | |
5251 | .flush_buffer = cy_flush_buffer, | |
5252 | .ioctl = cy_ioctl, | |
5253 | .throttle = cy_throttle, | |
5254 | .unthrottle = cy_unthrottle, | |
5255 | .set_termios = cy_set_termios, | |
5256 | .stop = cy_stop, | |
5257 | .start = cy_start, | |
5258 | .hangup = cy_hangup, | |
5259 | .break_ctl = cy_break, | |
5260 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
5261 | .tiocmget = cy_tiocmget, |
5262 | .tiocmset = cy_tiocmset, | |
444697d6 | 5263 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
5264 | }; |
5265 | ||
02f1175c | 5266 | static int __init cy_init(void) |
1da177e4 | 5267 | { |
dd025c0c | 5268 | unsigned int nboards; |
9dacf3b2 | 5269 | int retval = -ENOMEM; |
02f1175c JS |
5270 | |
5271 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
5272 | if (!cy_serial_driver) | |
9dacf3b2 | 5273 | goto err; |
21719191 JS |
5274 | |
5275 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", | |
5276 | __DATE__, __TIME__); | |
02f1175c JS |
5277 | |
5278 | /* Initialize the tty_driver structure */ | |
5279 | ||
5280 | cy_serial_driver->owner = THIS_MODULE; | |
5281 | cy_serial_driver->driver_name = "cyclades"; | |
5282 | cy_serial_driver->name = "ttyC"; | |
5283 | cy_serial_driver->major = CYCLADES_MAJOR; | |
5284 | cy_serial_driver->minor_start = 0; | |
5285 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
5286 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
5287 | cy_serial_driver->init_termios = tty_std_termios; | |
5288 | cy_serial_driver->init_termios.c_cflag = | |
5289 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 5290 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
5291 | tty_set_operations(cy_serial_driver, &cy_ops); |
5292 | ||
9dacf3b2 JS |
5293 | retval = tty_register_driver(cy_serial_driver); |
5294 | if (retval) { | |
5295 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
5296 | goto err_frtty; | |
5297 | } | |
02f1175c | 5298 | |
02f1175c JS |
5299 | /* the code below is responsible to find the boards. Each different |
5300 | type of board has its own detection routine. If a board is found, | |
5301 | the next cy_card structure available is set by the detection | |
5302 | routine. These functions are responsible for checking the | |
5303 | availability of cy_card and cy_port data structures and updating | |
5304 | the cy_next_channel. */ | |
5305 | ||
5306 | /* look for isa boards */ | |
14a55a67 | 5307 | nboards = cy_detect_isa(); |
02f1175c | 5308 | |
6747cd93 | 5309 | #ifdef CONFIG_PCI |
02f1175c | 5310 | /* look for pci boards */ |
6747cd93 | 5311 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
5312 | if (retval && !nboards) { |
5313 | tty_unregister_driver(cy_serial_driver); | |
5314 | goto err_frtty; | |
5315 | } | |
6747cd93 | 5316 | #endif |
9dacf3b2 JS |
5317 | |
5318 | return 0; | |
9dacf3b2 JS |
5319 | err_frtty: |
5320 | put_tty_driver(cy_serial_driver); | |
5321 | err: | |
5322 | return retval; | |
02f1175c | 5323 | } /* cy_init */ |
1da177e4 | 5324 | |
02f1175c | 5325 | static void __exit cy_cleanup_module(void) |
1da177e4 | 5326 | { |
dd025c0c | 5327 | struct cyclades_card *card; |
65f76a82 | 5328 | unsigned int i, e1; |
1da177e4 LT |
5329 | |
5330 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 5331 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
5332 | #endif /* CONFIG_CYZ_INTR */ |
5333 | ||
15ed6cc0 AC |
5334 | e1 = tty_unregister_driver(cy_serial_driver); |
5335 | if (e1) | |
21719191 JS |
5336 | printk(KERN_ERR "failed to unregister Cyclades serial " |
5337 | "driver(%d)\n", e1); | |
1da177e4 | 5338 | |
6747cd93 JS |
5339 | #ifdef CONFIG_PCI |
5340 | pci_unregister_driver(&cy_pci_driver); | |
5341 | #endif | |
5342 | ||
02f1175c | 5343 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
5344 | card = &cy_card[i]; |
5345 | if (card->base_addr) { | |
85c93fa9 | 5346 | /* clear interrupt */ |
dd025c0c JS |
5347 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
5348 | iounmap(card->base_addr); | |
97e87f8e JS |
5349 | if (card->ctl_addr.p9050) |
5350 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 5351 | if (card->irq |
1da177e4 | 5352 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 5353 | && !cy_is_Z(card) |
1da177e4 | 5354 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 5355 | ) |
dd025c0c | 5356 | free_irq(card->irq, card); |
65f76a82 | 5357 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 5358 | card->nports; e1++) |
6ad1ccc1 | 5359 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 5360 | kfree(card->ports); |
02f1175c JS |
5361 | } |
5362 | } | |
f2462bfe JS |
5363 | |
5364 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
5365 | } /* cy_cleanup_module */ |
5366 | ||
5367 | module_init(cy_init); | |
5368 | module_exit(cy_cleanup_module); | |
5369 | ||
5370 | MODULE_LICENSE("GPL"); | |
c8e1693a | 5371 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 5372 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |