Commit | Line | Data |
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1da177e4 LT |
1 | /* sx.c -- driver for the Specialix SX series cards. |
2 | * | |
3 | * This driver will also support the older SI, and XIO cards. | |
4 | * | |
5 | * | |
6 | * (C) 1998 - 2004 R.E.Wolff@BitWizard.nl | |
7 | * | |
8 | * Simon Allen (simonallen@cix.compulink.co.uk) wrote a previous | |
9 | * version of this driver. Some fragments may have been copied. (none | |
10 | * yet :-) | |
11 | * | |
12 | * Specialix pays for the development and support of this driver. | |
13 | * Please DO contact support@specialix.co.uk if you require | |
14 | * support. But please read the documentation (sx.txt) first. | |
15 | * | |
16 | * | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or | |
19 | * modify it under the terms of the GNU General Public License as | |
20 | * published by the Free Software Foundation; either version 2 of | |
21 | * the License, or (at your option) any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be | |
24 | * useful, but WITHOUT ANY WARRANTY; without even the implied | |
25 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
26 | * PURPOSE. See the GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public | |
29 | * License along with this program; if not, write to the Free | |
30 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, | |
31 | * USA. | |
32 | * | |
33 | * Revision history: | |
1da177e4 LT |
34 | * Revision 1.33 2000/03/09 10:00:00 pvdl,wolff |
35 | * - Fixed module and port counting | |
36 | * - Fixed signal handling | |
37 | * - Fixed an Ooops | |
38 | * | |
39 | * Revision 1.32 2000/03/07 09:00:00 wolff,pvdl | |
40 | * - Fixed some sx_dprintk typos | |
41 | * - added detection for an invalid board/module configuration | |
42 | * | |
43 | * Revision 1.31 2000/03/06 12:00:00 wolff,pvdl | |
44 | * - Added support for EISA | |
45 | * | |
46 | * Revision 1.30 2000/01/21 17:43:06 wolff | |
47 | * - Added support for SX+ | |
48 | * | |
49 | * Revision 1.26 1999/08/05 15:22:14 wolff | |
50 | * - Port to 2.3.x | |
51 | * - Reformatted to Linus' liking. | |
52 | * | |
53 | * Revision 1.25 1999/07/30 14:24:08 wolff | |
54 | * Had accidentally left "gs_debug" set to "-1" instead of "off" (=0). | |
55 | * | |
56 | * Revision 1.24 1999/07/28 09:41:52 wolff | |
57 | * - I noticed the remark about use-count straying in sx.txt. I checked | |
58 | * sx_open, and found a few places where that could happen. I hope it's | |
59 | * fixed now. | |
60 | * | |
61 | * Revision 1.23 1999/07/28 08:56:06 wolff | |
62 | * - Fixed crash when sx_firmware run twice. | |
63 | * - Added sx_slowpoll as a module parameter (I guess nobody really wanted | |
64 | * to change it from the default... ) | |
65 | * - Fixed a stupid editing problem I introduced in 1.22. | |
66 | * - Fixed dropping characters on a termios change. | |
67 | * | |
68 | * Revision 1.22 1999/07/26 21:01:43 wolff | |
69 | * Russell Brown noticed that I had overlooked 4 out of six modem control | |
70 | * signals in sx_getsignals. Ooops. | |
71 | * | |
72 | * Revision 1.21 1999/07/23 09:11:33 wolff | |
73 | * I forgot to free dynamically allocated memory when the driver is unloaded. | |
74 | * | |
75 | * Revision 1.20 1999/07/20 06:25:26 wolff | |
76 | * The "closing wait" wasn't honoured. Thanks to James Griffiths for | |
77 | * reporting this. | |
78 | * | |
79 | * Revision 1.19 1999/07/11 08:59:59 wolff | |
80 | * Fixed an oops in close, when an open was pending. Changed the memtest | |
81 | * a bit. Should also test the board in word-mode, however my card fails the | |
82 | * memtest then. I still have to figure out what is wrong... | |
83 | * | |
84 | * Revision 1.18 1999/06/10 09:38:42 wolff | |
85 | * Changed the format of the firmware revision from %04x to %x.%02x . | |
86 | * | |
87 | * Revision 1.17 1999/06/04 09:44:35 wolff | |
88 | * fixed problem: reference to pci stuff when config_pci was off... | |
89 | * Thanks to Jorge Novo for noticing this. | |
90 | * | |
91 | * Revision 1.16 1999/06/02 08:30:15 wolff | |
92 | * added/removed the workaround for the DCD bug in the Firmware. | |
93 | * A bit more debugging code to locate that... | |
94 | * | |
95 | * Revision 1.15 1999/06/01 11:35:30 wolff | |
96 | * when DCD is left low (floating?), on TA's the firmware first tells us | |
97 | * that DCD is high, but after a short while suddenly comes to the | |
98 | * conclusion that it is low. All this would be fine, if it weren't that | |
99 | * Unix requires us to send a "hangup" signal in that case. This usually | |
100 | * all happens BEFORE the program has had a chance to ioctl the device | |
101 | * into clocal mode.. | |
102 | * | |
103 | * Revision 1.14 1999/05/25 11:18:59 wolff | |
104 | * Added PCI-fix. | |
105 | * Added checks for return code of sx_sendcommand. | |
106 | * Don't issue "reconfig" if port isn't open yet. (bit us on TA modules...) | |
107 | * | |
108 | * Revision 1.13 1999/04/29 15:18:01 wolff | |
109 | * Fixed an "oops" that showed on SuSE 6.0 systems. | |
110 | * Activate DTR again after stty 0. | |
111 | * | |
112 | * Revision 1.12 1999/04/29 07:49:52 wolff | |
113 | * Improved "stty 0" handling a bit. (used to change baud to 9600 assuming | |
114 | * the connection would be dropped anyway. That is not always the case, | |
115 | * and confuses people). | |
116 | * Told the card to always monitor the modem signals. | |
117 | * Added support for dynamic gs_debug adjustments. | |
118 | * Now tells the rest of the system the number of ports. | |
119 | * | |
120 | * Revision 1.11 1999/04/24 11:11:30 wolff | |
121 | * Fixed two stupid typos in the memory test. | |
122 | * | |
123 | * Revision 1.10 1999/04/24 10:53:39 wolff | |
124 | * Added some of Christian's suggestions. | |
125 | * Fixed an HW_COOK_IN bug (ISIG was not in I_OTHER. We used to trust the | |
126 | * card to send the signal to the process.....) | |
127 | * | |
128 | * Revision 1.9 1999/04/23 07:26:38 wolff | |
129 | * Included Christian Lademann's 2.0 compile-warning fixes and interrupt | |
130 | * assignment redesign. | |
131 | * Cleanup of some other stuff. | |
132 | * | |
133 | * Revision 1.8 1999/04/16 13:05:30 wolff | |
134 | * fixed a DCD change unnoticed bug. | |
135 | * | |
136 | * Revision 1.7 1999/04/14 22:19:51 wolff | |
137 | * Fixed typo that showed up in 2.0.x builds (get_user instead of Get_user!) | |
138 | * | |
139 | * Revision 1.6 1999/04/13 18:40:20 wolff | |
140 | * changed misc-minor to 161, as assigned by HPA. | |
141 | * | |
142 | * Revision 1.5 1999/04/13 15:12:25 wolff | |
143 | * Fixed use-count leak when "hangup" occurred. | |
144 | * Added workaround for a stupid-PCIBIOS bug. | |
145 | * | |
146 | * | |
147 | * Revision 1.4 1999/04/01 22:47:40 wolff | |
148 | * Fixed < 1M linux-2.0 problem. | |
149 | * (vremap isn't compatible with ioremap in that case) | |
150 | * | |
151 | * Revision 1.3 1999/03/31 13:45:45 wolff | |
152 | * Firmware loading is now done through a separate IOCTL. | |
153 | * | |
154 | * Revision 1.2 1999/03/28 12:22:29 wolff | |
155 | * rcs cleanup | |
156 | * | |
157 | * Revision 1.1 1999/03/28 12:10:34 wolff | |
158 | * Readying for release on 2.0.x (sorry David, 1.01 becomes 1.1 for RCS). | |
159 | * | |
160 | * Revision 0.12 1999/03/28 09:20:10 wolff | |
161 | * Fixed problem in 0.11, continueing cleanup. | |
162 | * | |
163 | * Revision 0.11 1999/03/28 08:46:44 wolff | |
164 | * cleanup. Not good. | |
165 | * | |
166 | * Revision 0.10 1999/03/28 08:09:43 wolff | |
167 | * Fixed loosing characters on close. | |
168 | * | |
169 | * Revision 0.9 1999/03/21 22:52:01 wolff | |
170 | * Ported back to 2.2.... (minor things) | |
171 | * | |
172 | * Revision 0.8 1999/03/21 22:40:33 wolff | |
173 | * Port to 2.0 | |
174 | * | |
175 | * Revision 0.7 1999/03/21 19:06:34 wolff | |
176 | * Fixed hangup processing. | |
177 | * | |
178 | * Revision 0.6 1999/02/05 08:45:14 wolff | |
179 | * fixed real_raw problems. Inclusion into kernel imminent. | |
180 | * | |
181 | * Revision 0.5 1998/12/21 23:51:06 wolff | |
182 | * Snatched a nasty bug: sx_transmit_chars was getting re-entered, and it | |
183 | * shouldn't have. THATs why I want to have transmit interrupts even when | |
184 | * the buffer is empty. | |
185 | * | |
186 | * Revision 0.4 1998/12/17 09:34:46 wolff | |
187 | * PPP works. ioctl works. Basically works! | |
188 | * | |
189 | * Revision 0.3 1998/12/15 13:05:18 wolff | |
190 | * It works! Wow! Gotta start implementing IOCTL and stuff.... | |
191 | * | |
192 | * Revision 0.2 1998/12/01 08:33:53 wolff | |
193 | * moved over to 2.1.130 | |
194 | * | |
195 | * Revision 0.1 1998/11/03 21:23:51 wolff | |
196 | * Initial revision. Detects SX card. | |
197 | * | |
198 | * */ | |
199 | ||
11c83877 | 200 | #define SX_VERSION 1.33 |
1da177e4 | 201 | |
1da177e4 | 202 | #include <linux/module.h> |
1da177e4 LT |
203 | #include <linux/kdev_t.h> |
204 | #include <linux/kernel.h> | |
205 | #include <linux/sched.h> | |
206 | #include <linux/ioport.h> | |
207 | #include <linux/interrupt.h> | |
208 | #include <linux/errno.h> | |
209 | #include <linux/tty.h> | |
210 | #include <linux/tty_flip.h> | |
211 | #include <linux/mm.h> | |
212 | #include <linux/serial.h> | |
213 | #include <linux/fcntl.h> | |
214 | #include <linux/major.h> | |
215 | #include <linux/delay.h> | |
18f813ee | 216 | #include <linux/eisa.h> |
1da177e4 LT |
217 | #include <linux/pci.h> |
218 | #include <linux/slab.h> | |
219 | #include <linux/init.h> | |
220 | #include <linux/miscdevice.h> | |
221 | #include <linux/bitops.h> | |
222 | ||
223 | #include <asm/io.h> | |
224 | #include <asm/uaccess.h> | |
225 | ||
226 | /* The 3.0.0 version of sxboards/sxwindow.h uses BYTE and WORD.... */ | |
227 | #define BYTE u8 | |
228 | #define WORD u16 | |
229 | ||
230 | /* .... but the 3.0.4 version uses _u8 and _u16. */ | |
231 | #define _u8 u8 | |
232 | #define _u16 u16 | |
233 | ||
234 | #include "sxboards.h" | |
235 | #include "sxwindow.h" | |
236 | ||
237 | #include <linux/generic_serial.h> | |
238 | #include "sx.h" | |
239 | ||
1da177e4 LT |
240 | /* I don't think that this driver can handle more than 256 ports on |
241 | one machine. You'll have to increase the number of boards in sx.h | |
242 | if you want more than 4 boards. */ | |
243 | ||
244 | #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 | |
245 | #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 | |
246 | #endif | |
247 | ||
1da177e4 LT |
248 | /* Configurable options: |
249 | (Don't be too sure that it'll work if you toggle them) */ | |
250 | ||
251 | /* Am I paranoid or not ? ;-) */ | |
252 | #undef SX_PARANOIA_CHECK | |
253 | ||
1da177e4 LT |
254 | /* 20 -> 2000 per second. The card should rate-limit interrupts at 100 |
255 | Hz, but it is user configurable. I don't recommend going above 1000 | |
256 | Hz. The interrupt ratelimit might trigger if the interrupt is | |
257 | shared with a very active other device. */ | |
258 | #define IRQ_RATE_LIMIT 20 | |
259 | ||
260 | /* Sharing interrupts is possible now. If the other device wants more | |
261 | than 2000 interrupts per second, we'd gracefully decline further | |
262 | interrupts. That's not what we want. On the other hand, if the | |
263 | other device interrupts 2000 times a second, don't use the SX | |
264 | interrupt. Use polling. */ | |
265 | #undef IRQ_RATE_LIMIT | |
266 | ||
1da177e4 LT |
267 | #if 0 |
268 | /* Not implemented */ | |
269 | /* | |
270 | * The following defines are mostly for testing purposes. But if you need | |
271 | * some nice reporting in your syslog, you can define them also. | |
272 | */ | |
273 | #define SX_REPORT_FIFO | |
274 | #define SX_REPORT_OVERRUN | |
15b611f6 | 275 | #endif |
1da177e4 LT |
276 | |
277 | /* Function prototypes */ | |
15b611f6 JS |
278 | static void sx_disable_tx_interrupts(void *ptr); |
279 | static void sx_enable_tx_interrupts(void *ptr); | |
280 | static void sx_disable_rx_interrupts(void *ptr); | |
281 | static void sx_enable_rx_interrupts(void *ptr); | |
31f35939 | 282 | static int sx_carrier_raised(struct tty_port *port); |
15b611f6 JS |
283 | static void sx_shutdown_port(void *ptr); |
284 | static int sx_set_real_termios(void *ptr); | |
285 | static void sx_close(void *ptr); | |
286 | static int sx_chars_in_buffer(void *ptr); | |
287 | static int sx_init_board(struct sx_board *board); | |
288 | static int sx_init_portstructs(int nboards, int nports); | |
11af7478 AC |
289 | static long sx_fw_ioctl(struct file *filp, unsigned int cmd, |
290 | unsigned long arg); | |
1da177e4 LT |
291 | static int sx_init_drivers(void); |
292 | ||
1da177e4 LT |
293 | static struct tty_driver *sx_driver; |
294 | ||
42f6384f | 295 | static DEFINE_MUTEX(sx_boards_lock); |
1da177e4 LT |
296 | static struct sx_board boards[SX_NBOARDS]; |
297 | static struct sx_port *sx_ports; | |
298 | static int sx_initialized; | |
299 | static int sx_nports; | |
300 | static int sx_debug; | |
301 | ||
1da177e4 LT |
302 | /* You can have the driver poll your card. |
303 | - Set sx_poll to 1 to poll every timer tick (10ms on Intel). | |
304 | This is used when the card cannot use an interrupt for some reason. | |
305 | ||
306 | - set sx_slowpoll to 100 to do an extra poll once a second (on Intel). If | |
307 | the driver misses an interrupt (report this if it DOES happen to you!) | |
308 | everything will continue to work.... | |
309 | */ | |
310 | static int sx_poll = 1; | |
311 | static int sx_slowpoll; | |
312 | ||
313 | /* The card limits the number of interrupts per second. | |
314 | At 115k2 "100" should be sufficient. | |
315 | If you're using higher baudrates, you can increase this... | |
316 | */ | |
317 | ||
318 | static int sx_maxints = 100; | |
319 | ||
927a6f9d JS |
320 | #ifdef CONFIG_ISA |
321 | ||
1da177e4 LT |
322 | /* These are the only open spaces in my computer. Yours may have more |
323 | or less.... -- REW | |
324 | duh: Card at 0xa0000 is possible on HP Netserver?? -- pvdl | |
325 | */ | |
15b611f6 JS |
326 | static int sx_probe_addrs[] = { |
327 | 0xc0000, 0xd0000, 0xe0000, | |
328 | 0xc8000, 0xd8000, 0xe8000 | |
329 | }; | |
330 | static int si_probe_addrs[] = { | |
331 | 0xc0000, 0xd0000, 0xe0000, | |
332 | 0xc8000, 0xd8000, 0xe8000, 0xa0000 | |
333 | }; | |
334 | static int si1_probe_addrs[] = { | |
335 | 0xd0000 | |
336 | }; | |
1da177e4 | 337 | |
fe971071 TK |
338 | #define NR_SX_ADDRS ARRAY_SIZE(sx_probe_addrs) |
339 | #define NR_SI_ADDRS ARRAY_SIZE(si_probe_addrs) | |
340 | #define NR_SI1_ADDRS ARRAY_SIZE(si1_probe_addrs) | |
1da177e4 | 341 | |
927a6f9d JS |
342 | module_param_array(sx_probe_addrs, int, NULL, 0); |
343 | module_param_array(si_probe_addrs, int, NULL, 0); | |
344 | #endif | |
1da177e4 LT |
345 | |
346 | /* Set the mask to all-ones. This alas, only supports 32 interrupts. | |
347 | Some architectures may need more. */ | |
348 | static int sx_irqmask = -1; | |
349 | ||
1da177e4 LT |
350 | module_param(sx_poll, int, 0); |
351 | module_param(sx_slowpoll, int, 0); | |
352 | module_param(sx_maxints, int, 0); | |
353 | module_param(sx_debug, int, 0); | |
354 | module_param(sx_irqmask, int, 0); | |
355 | ||
356 | MODULE_LICENSE("GPL"); | |
357 | ||
358 | static struct real_driver sx_real_driver = { | |
359 | sx_disable_tx_interrupts, | |
360 | sx_enable_tx_interrupts, | |
361 | sx_disable_rx_interrupts, | |
362 | sx_enable_rx_interrupts, | |
15b611f6 JS |
363 | sx_shutdown_port, |
364 | sx_set_real_termios, | |
1da177e4 LT |
365 | sx_chars_in_buffer, |
366 | sx_close, | |
367 | }; | |
368 | ||
1da177e4 LT |
369 | /* |
370 | This driver can spew a whole lot of debugging output at you. If you | |
371 | need maximum performance, you should disable the DEBUG define. To | |
372 | aid in debugging in the field, I'm leaving the compile-time debug | |
373 | features enabled, and disable them "runtime". That allows me to | |
374 | instruct people with problems to enable debugging without requiring | |
375 | them to recompile... | |
376 | */ | |
377 | #define DEBUG | |
378 | ||
1da177e4 | 379 | #ifdef DEBUG |
15b611f6 | 380 | #define sx_dprintk(f, str...) if (sx_debug & f) printk (str) |
1da177e4 | 381 | #else |
15b611f6 | 382 | #define sx_dprintk(f, str...) /* nothing */ |
1da177e4 LT |
383 | #endif |
384 | ||
bf9d8929 HH |
385 | #define func_enter() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s\n",__func__) |
386 | #define func_exit() sx_dprintk(SX_DEBUG_FLOW, "sx: exit %s\n",__func__) | |
1da177e4 | 387 | |
15b611f6 | 388 | #define func_enter2() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s (port %d)\n", \ |
bf9d8929 | 389 | __func__, port->line) |
1da177e4 LT |
390 | |
391 | /* | |
392 | * Firmware loader driver specific routines | |
393 | * | |
394 | */ | |
395 | ||
62322d25 | 396 | static const struct file_operations sx_fw_fops = { |
15b611f6 | 397 | .owner = THIS_MODULE, |
11af7478 | 398 | .unlocked_ioctl = sx_fw_ioctl, |
1da177e4 LT |
399 | }; |
400 | ||
401 | static struct miscdevice sx_fw_device = { | |
402 | SXCTL_MISC_MINOR, "sxctl", &sx_fw_fops | |
403 | }; | |
404 | ||
1da177e4 LT |
405 | #ifdef SX_PARANOIA_CHECK |
406 | ||
407 | /* This doesn't work. Who's paranoid around here? Not me! */ | |
408 | ||
15b611f6 | 409 | static inline int sx_paranoia_check(struct sx_port const *port, |
1da177e4 LT |
410 | char *name, const char *routine) |
411 | { | |
15b611f6 JS |
412 | static const char *badmagic = KERN_ERR "sx: Warning: bad sx port magic " |
413 | "number for device %s in %s\n"; | |
414 | static const char *badinfo = KERN_ERR "sx: Warning: null sx port for " | |
415 | "device %s in %s\n"; | |
1da177e4 | 416 | |
1da177e4 LT |
417 | if (!port) { |
418 | printk(badinfo, name, routine); | |
419 | return 1; | |
420 | } | |
421 | if (port->magic != SX_MAGIC) { | |
422 | printk(badmagic, name, routine); | |
423 | return 1; | |
424 | } | |
425 | ||
426 | return 0; | |
427 | } | |
428 | #else | |
429 | #define sx_paranoia_check(a,b,c) 0 | |
430 | #endif | |
431 | ||
432 | /* The timeouts. First try 30 times as fast as possible. Then give | |
433 | the card some time to breathe between accesses. (Otherwise the | |
434 | processor on the card might not be able to access its OWN bus... */ | |
435 | ||
436 | #define TIMEOUT_1 30 | |
437 | #define TIMEOUT_2 1000000 | |
438 | ||
1da177e4 LT |
439 | #ifdef DEBUG |
440 | static void my_hd_io(void __iomem *p, int len) | |
441 | { | |
442 | int i, j, ch; | |
443 | unsigned char __iomem *addr = p; | |
444 | ||
15b611f6 JS |
445 | for (i = 0; i < len; i += 16) { |
446 | printk("%p ", addr + i); | |
447 | for (j = 0; j < 16; j++) { | |
448 | printk("%02x %s", readb(addr + j + i), | |
449 | (j == 7) ? " " : ""); | |
1da177e4 | 450 | } |
15b611f6 JS |
451 | for (j = 0; j < 16; j++) { |
452 | ch = readb(addr + j + i); | |
453 | printk("%c", (ch < 0x20) ? '.' : | |
454 | ((ch > 0x7f) ? '.' : ch)); | |
1da177e4 | 455 | } |
15b611f6 | 456 | printk("\n"); |
1da177e4 LT |
457 | } |
458 | } | |
459 | static void my_hd(void *p, int len) | |
460 | { | |
461 | int i, j, ch; | |
462 | unsigned char *addr = p; | |
463 | ||
15b611f6 JS |
464 | for (i = 0; i < len; i += 16) { |
465 | printk("%p ", addr + i); | |
466 | for (j = 0; j < 16; j++) { | |
467 | printk("%02x %s", addr[j + i], (j == 7) ? " " : ""); | |
1da177e4 | 468 | } |
15b611f6 JS |
469 | for (j = 0; j < 16; j++) { |
470 | ch = addr[j + i]; | |
471 | printk("%c", (ch < 0x20) ? '.' : | |
472 | ((ch > 0x7f) ? '.' : ch)); | |
1da177e4 | 473 | } |
15b611f6 | 474 | printk("\n"); |
1da177e4 LT |
475 | } |
476 | } | |
477 | #endif | |
478 | ||
1da177e4 LT |
479 | /* This needs redoing for Alpha -- REW -- Done. */ |
480 | ||
15b611f6 | 481 | static inline void write_sx_byte(struct sx_board *board, int offset, u8 byte) |
1da177e4 | 482 | { |
15b611f6 | 483 | writeb(byte, board->base + offset); |
1da177e4 LT |
484 | } |
485 | ||
15b611f6 | 486 | static inline u8 read_sx_byte(struct sx_board *board, int offset) |
1da177e4 | 487 | { |
15b611f6 | 488 | return readb(board->base + offset); |
1da177e4 LT |
489 | } |
490 | ||
15b611f6 | 491 | static inline void write_sx_word(struct sx_board *board, int offset, u16 word) |
1da177e4 | 492 | { |
15b611f6 | 493 | writew(word, board->base + offset); |
1da177e4 LT |
494 | } |
495 | ||
15b611f6 | 496 | static inline u16 read_sx_word(struct sx_board *board, int offset) |
1da177e4 | 497 | { |
15b611f6 | 498 | return readw(board->base + offset); |
1da177e4 LT |
499 | } |
500 | ||
15b611f6 JS |
501 | static int sx_busy_wait_eq(struct sx_board *board, |
502 | int offset, int mask, int correctval) | |
1da177e4 LT |
503 | { |
504 | int i; | |
505 | ||
15b611f6 | 506 | func_enter(); |
1da177e4 | 507 | |
15b611f6 JS |
508 | for (i = 0; i < TIMEOUT_1; i++) |
509 | if ((read_sx_byte(board, offset) & mask) == correctval) { | |
510 | func_exit(); | |
1da177e4 LT |
511 | return 1; |
512 | } | |
513 | ||
15b611f6 JS |
514 | for (i = 0; i < TIMEOUT_2; i++) { |
515 | if ((read_sx_byte(board, offset) & mask) == correctval) { | |
516 | func_exit(); | |
1da177e4 LT |
517 | return 1; |
518 | } | |
15b611f6 | 519 | udelay(1); |
1da177e4 LT |
520 | } |
521 | ||
15b611f6 | 522 | func_exit(); |
1da177e4 LT |
523 | return 0; |
524 | } | |
525 | ||
15b611f6 JS |
526 | static int sx_busy_wait_neq(struct sx_board *board, |
527 | int offset, int mask, int badval) | |
1da177e4 LT |
528 | { |
529 | int i; | |
530 | ||
15b611f6 | 531 | func_enter(); |
1da177e4 | 532 | |
15b611f6 JS |
533 | for (i = 0; i < TIMEOUT_1; i++) |
534 | if ((read_sx_byte(board, offset) & mask) != badval) { | |
535 | func_exit(); | |
1da177e4 LT |
536 | return 1; |
537 | } | |
538 | ||
15b611f6 JS |
539 | for (i = 0; i < TIMEOUT_2; i++) { |
540 | if ((read_sx_byte(board, offset) & mask) != badval) { | |
541 | func_exit(); | |
1da177e4 LT |
542 | return 1; |
543 | } | |
15b611f6 | 544 | udelay(1); |
1da177e4 LT |
545 | } |
546 | ||
15b611f6 | 547 | func_exit(); |
1da177e4 LT |
548 | return 0; |
549 | } | |
550 | ||
1da177e4 | 551 | /* 5.6.4 of 6210028 r2.3 */ |
15b611f6 | 552 | static int sx_reset(struct sx_board *board) |
1da177e4 | 553 | { |
15b611f6 | 554 | func_enter(); |
1da177e4 | 555 | |
15b611f6 | 556 | if (IS_SX_BOARD(board)) { |
1da177e4 | 557 | |
15b611f6 JS |
558 | write_sx_byte(board, SX_CONFIG, 0); |
559 | write_sx_byte(board, SX_RESET, 1); /* Value doesn't matter */ | |
1da177e4 | 560 | |
15b611f6 JS |
561 | if (!sx_busy_wait_eq(board, SX_RESET_STATUS, 1, 0)) { |
562 | printk(KERN_INFO "sx: Card doesn't respond to " | |
563 | "reset...\n"); | |
1da177e4 LT |
564 | return 0; |
565 | } | |
566 | } else if (IS_EISA_BOARD(board)) { | |
15b611f6 | 567 | outb(board->irq << 4, board->eisa_base + 0xc02); |
1da177e4 | 568 | } else if (IS_SI1_BOARD(board)) { |
15b611f6 | 569 | write_sx_byte(board, SI1_ISA_RESET, 0); /*value doesn't matter*/ |
1da177e4 LT |
570 | } else { |
571 | /* Gory details of the SI/ISA board */ | |
15b611f6 JS |
572 | write_sx_byte(board, SI2_ISA_RESET, SI2_ISA_RESET_SET); |
573 | write_sx_byte(board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_CLEAR); | |
574 | write_sx_byte(board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_CLEAR); | |
575 | write_sx_byte(board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_CLEAR); | |
576 | write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); | |
577 | write_sx_byte(board, SI2_ISA_IRQSET, SI2_ISA_IRQSET_CLEAR); | |
1da177e4 LT |
578 | } |
579 | ||
15b611f6 | 580 | func_exit(); |
1da177e4 LT |
581 | return 1; |
582 | } | |
583 | ||
1da177e4 LT |
584 | /* This doesn't work on machines where "NULL" isn't 0 */ |
585 | /* If you have one of those, someone will need to write | |
586 | the equivalent of this, which will amount to about 3 lines. I don't | |
587 | want to complicate this right now. -- REW | |
588 | (See, I do write comments every now and then :-) */ | |
15b611f6 | 589 | #define OFFSETOF(strct, elem) ((long)&(((struct strct *)NULL)->elem)) |
1da177e4 | 590 | |
15b611f6 JS |
591 | #define CHAN_OFFSET(port,elem) (port->ch_base + OFFSETOF (_SXCHANNEL, elem)) |
592 | #define MODU_OFFSET(board,addr,elem) (addr + OFFSETOF (_SXMODULE, elem)) | |
593 | #define BRD_OFFSET(board,elem) (OFFSETOF (_SXCARD, elem)) | |
1da177e4 LT |
594 | |
595 | #define sx_write_channel_byte(port, elem, val) \ | |
15b611f6 | 596 | write_sx_byte (port->board, CHAN_OFFSET (port, elem), val) |
1da177e4 LT |
597 | |
598 | #define sx_read_channel_byte(port, elem) \ | |
15b611f6 | 599 | read_sx_byte (port->board, CHAN_OFFSET (port, elem)) |
1da177e4 LT |
600 | |
601 | #define sx_write_channel_word(port, elem, val) \ | |
15b611f6 | 602 | write_sx_word (port->board, CHAN_OFFSET (port, elem), val) |
1da177e4 LT |
603 | |
604 | #define sx_read_channel_word(port, elem) \ | |
15b611f6 | 605 | read_sx_word (port->board, CHAN_OFFSET (port, elem)) |
1da177e4 LT |
606 | |
607 | #define sx_write_module_byte(board, addr, elem, val) \ | |
15b611f6 | 608 | write_sx_byte (board, MODU_OFFSET (board, addr, elem), val) |
1da177e4 LT |
609 | |
610 | #define sx_read_module_byte(board, addr, elem) \ | |
15b611f6 | 611 | read_sx_byte (board, MODU_OFFSET (board, addr, elem)) |
1da177e4 LT |
612 | |
613 | #define sx_write_module_word(board, addr, elem, val) \ | |
15b611f6 | 614 | write_sx_word (board, MODU_OFFSET (board, addr, elem), val) |
1da177e4 LT |
615 | |
616 | #define sx_read_module_word(board, addr, elem) \ | |
15b611f6 | 617 | read_sx_word (board, MODU_OFFSET (board, addr, elem)) |
1da177e4 LT |
618 | |
619 | #define sx_write_board_byte(board, elem, val) \ | |
15b611f6 | 620 | write_sx_byte (board, BRD_OFFSET (board, elem), val) |
1da177e4 LT |
621 | |
622 | #define sx_read_board_byte(board, elem) \ | |
15b611f6 | 623 | read_sx_byte (board, BRD_OFFSET (board, elem)) |
1da177e4 LT |
624 | |
625 | #define sx_write_board_word(board, elem, val) \ | |
15b611f6 | 626 | write_sx_word (board, BRD_OFFSET (board, elem), val) |
1da177e4 LT |
627 | |
628 | #define sx_read_board_word(board, elem) \ | |
15b611f6 | 629 | read_sx_word (board, BRD_OFFSET (board, elem)) |
1da177e4 | 630 | |
15b611f6 | 631 | static int sx_start_board(struct sx_board *board) |
1da177e4 | 632 | { |
15b611f6 JS |
633 | if (IS_SX_BOARD(board)) { |
634 | write_sx_byte(board, SX_CONFIG, SX_CONF_BUSEN); | |
1da177e4 LT |
635 | } else if (IS_EISA_BOARD(board)) { |
636 | write_sx_byte(board, SI2_EISA_OFF, SI2_EISA_VAL); | |
15b611f6 | 637 | outb((board->irq << 4) | 4, board->eisa_base + 0xc02); |
1da177e4 | 638 | } else if (IS_SI1_BOARD(board)) { |
15b611f6 JS |
639 | write_sx_byte(board, SI1_ISA_RESET_CLEAR, 0); |
640 | write_sx_byte(board, SI1_ISA_INTCL, 0); | |
1da177e4 LT |
641 | } else { |
642 | /* Don't bug me about the clear_set. | |
643 | I haven't the foggiest idea what it's about -- REW */ | |
15b611f6 JS |
644 | write_sx_byte(board, SI2_ISA_RESET, SI2_ISA_RESET_CLEAR); |
645 | write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); | |
1da177e4 LT |
646 | } |
647 | return 1; | |
648 | } | |
649 | ||
650 | #define SX_IRQ_REG_VAL(board) \ | |
15b611f6 | 651 | ((board->flags & SX_ISA_BOARD) ? (board->irq << 4) : 0) |
1da177e4 LT |
652 | |
653 | /* Note. The SX register is write-only. Therefore, we have to enable the | |
654 | bus too. This is a no-op, if you don't mess with this driver... */ | |
15b611f6 | 655 | static int sx_start_interrupts(struct sx_board *board) |
1da177e4 LT |
656 | { |
657 | ||
658 | /* Don't call this with board->irq == 0 */ | |
659 | ||
660 | if (IS_SX_BOARD(board)) { | |
15b611f6 JS |
661 | write_sx_byte(board, SX_CONFIG, SX_IRQ_REG_VAL(board) | |
662 | SX_CONF_BUSEN | SX_CONF_HOSTIRQ); | |
1da177e4 | 663 | } else if (IS_EISA_BOARD(board)) { |
15b611f6 | 664 | inb(board->eisa_base + 0xc03); |
1da177e4 | 665 | } else if (IS_SI1_BOARD(board)) { |
15b611f6 JS |
666 | write_sx_byte(board, SI1_ISA_INTCL, 0); |
667 | write_sx_byte(board, SI1_ISA_INTCL_CLEAR, 0); | |
1da177e4 LT |
668 | } else { |
669 | switch (board->irq) { | |
15b611f6 JS |
670 | case 11: |
671 | write_sx_byte(board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_SET); | |
672 | break; | |
673 | case 12: | |
674 | write_sx_byte(board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_SET); | |
675 | break; | |
676 | case 15: | |
677 | write_sx_byte(board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_SET); | |
678 | break; | |
679 | default: | |
680 | printk(KERN_INFO "sx: SI/XIO card doesn't support " | |
681 | "interrupt %d.\n", board->irq); | |
682 | return 0; | |
1da177e4 | 683 | } |
15b611f6 | 684 | write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); |
1da177e4 LT |
685 | } |
686 | ||
687 | return 1; | |
688 | } | |
689 | ||
15b611f6 JS |
690 | static int sx_send_command(struct sx_port *port, |
691 | int command, int mask, int newstat) | |
1da177e4 | 692 | { |
15b611f6 JS |
693 | func_enter2(); |
694 | write_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat), command); | |
695 | func_exit(); | |
696 | return sx_busy_wait_eq(port->board, CHAN_OFFSET(port, hi_hstat), mask, | |
697 | newstat); | |
1da177e4 LT |
698 | } |
699 | ||
15b611f6 | 700 | static char *mod_type_s(int module_type) |
1da177e4 LT |
701 | { |
702 | switch (module_type) { | |
15b611f6 JS |
703 | case TA4: |
704 | return "TA4"; | |
705 | case TA8: | |
706 | return "TA8"; | |
707 | case TA4_ASIC: | |
708 | return "TA4_ASIC"; | |
709 | case TA8_ASIC: | |
710 | return "TA8_ASIC"; | |
711 | case MTA_CD1400: | |
712 | return "MTA_CD1400"; | |
713 | case SXDC: | |
714 | return "SXDC"; | |
715 | default: | |
716 | return "Unknown/invalid"; | |
1da177e4 LT |
717 | } |
718 | } | |
719 | ||
15b611f6 | 720 | static char *pan_type_s(int pan_type) |
1da177e4 LT |
721 | { |
722 | switch (pan_type) { | |
15b611f6 JS |
723 | case MOD_RS232DB25: |
724 | return "MOD_RS232DB25"; | |
725 | case MOD_RS232RJ45: | |
726 | return "MOD_RS232RJ45"; | |
727 | case MOD_RS422DB25: | |
728 | return "MOD_RS422DB25"; | |
729 | case MOD_PARALLEL: | |
730 | return "MOD_PARALLEL"; | |
731 | case MOD_2_RS232DB25: | |
732 | return "MOD_2_RS232DB25"; | |
733 | case MOD_2_RS232RJ45: | |
734 | return "MOD_2_RS232RJ45"; | |
735 | case MOD_2_RS422DB25: | |
736 | return "MOD_2_RS422DB25"; | |
737 | case MOD_RS232DB25MALE: | |
738 | return "MOD_RS232DB25MALE"; | |
739 | case MOD_2_PARALLEL: | |
740 | return "MOD_2_PARALLEL"; | |
741 | case MOD_BLANK: | |
742 | return "empty"; | |
743 | default: | |
744 | return "invalid"; | |
1da177e4 LT |
745 | } |
746 | } | |
747 | ||
15b611f6 | 748 | static int mod_compat_type(int module_type) |
1da177e4 LT |
749 | { |
750 | return module_type >> 4; | |
751 | } | |
752 | ||
753 | static void sx_reconfigure_port(struct sx_port *port) | |
754 | { | |
15b611f6 JS |
755 | if (sx_read_channel_byte(port, hi_hstat) == HS_IDLE_OPEN) { |
756 | if (sx_send_command(port, HS_CONFIG, -1, HS_IDLE_OPEN) != 1) { | |
757 | printk(KERN_WARNING "sx: Sent reconfigure command, but " | |
758 | "card didn't react.\n"); | |
1da177e4 LT |
759 | } |
760 | } else { | |
15b611f6 JS |
761 | sx_dprintk(SX_DEBUG_TERMIOS, "sx: Not sending reconfigure: " |
762 | "port isn't open (%02x).\n", | |
763 | sx_read_channel_byte(port, hi_hstat)); | |
764 | } | |
1da177e4 LT |
765 | } |
766 | ||
15b611f6 | 767 | static void sx_setsignals(struct sx_port *port, int dtr, int rts) |
1da177e4 LT |
768 | { |
769 | int t; | |
15b611f6 | 770 | func_enter2(); |
1da177e4 | 771 | |
15b611f6 JS |
772 | t = sx_read_channel_byte(port, hi_op); |
773 | if (dtr >= 0) | |
774 | t = dtr ? (t | OP_DTR) : (t & ~OP_DTR); | |
775 | if (rts >= 0) | |
776 | t = rts ? (t | OP_RTS) : (t & ~OP_RTS); | |
777 | sx_write_channel_byte(port, hi_op, t); | |
778 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "setsignals: %d/%d\n", dtr, rts); | |
1da177e4 | 779 | |
15b611f6 | 780 | func_exit(); |
1da177e4 LT |
781 | } |
782 | ||
15b611f6 | 783 | static int sx_getsignals(struct sx_port *port) |
1da177e4 | 784 | { |
15b611f6 JS |
785 | int i_stat, o_stat; |
786 | ||
787 | o_stat = sx_read_channel_byte(port, hi_op); | |
788 | i_stat = sx_read_channel_byte(port, hi_ip); | |
789 | ||
790 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) " | |
791 | "%02x/%02x\n", | |
792 | (o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0, | |
31f35939 | 793 | port->c_dcd, tty_port_carrier_raised(&port->gs.port), |
15b611f6 JS |
794 | sx_read_channel_byte(port, hi_ip), |
795 | sx_read_channel_byte(port, hi_state)); | |
796 | ||
797 | return (((o_stat & OP_DTR) ? TIOCM_DTR : 0) | | |
798 | ((o_stat & OP_RTS) ? TIOCM_RTS : 0) | | |
799 | ((i_stat & IP_CTS) ? TIOCM_CTS : 0) | | |
800 | ((i_stat & IP_DCD) ? TIOCM_CAR : 0) | | |
801 | ((i_stat & IP_DSR) ? TIOCM_DSR : 0) | | |
802 | ((i_stat & IP_RI) ? TIOCM_RNG : 0)); | |
1da177e4 LT |
803 | } |
804 | ||
15b611f6 | 805 | static void sx_set_baud(struct sx_port *port) |
1da177e4 LT |
806 | { |
807 | int t; | |
808 | ||
809 | if (port->board->ta_type == MOD_SXDC) { | |
810 | switch (port->gs.baud) { | |
15b611f6 JS |
811 | /* Save some typing work... */ |
812 | #define e(x) case x: t = BAUD_ ## x; break | |
813 | e(50); | |
814 | e(75); | |
815 | e(110); | |
816 | e(150); | |
817 | e(200); | |
818 | e(300); | |
819 | e(600); | |
820 | e(1200); | |
821 | e(1800); | |
822 | e(2000); | |
823 | e(2400); | |
824 | e(4800); | |
825 | e(7200); | |
826 | e(9600); | |
827 | e(14400); | |
828 | e(19200); | |
829 | e(28800); | |
830 | e(38400); | |
831 | e(56000); | |
832 | e(57600); | |
833 | e(64000); | |
834 | e(76800); | |
835 | e(115200); | |
836 | e(128000); | |
837 | e(150000); | |
838 | e(230400); | |
839 | e(256000); | |
840 | e(460800); | |
841 | e(921600); | |
842 | case 134: | |
843 | t = BAUD_134_5; | |
844 | break; | |
845 | case 0: | |
846 | t = -1; | |
847 | break; | |
1da177e4 LT |
848 | default: |
849 | /* Can I return "invalid"? */ | |
850 | t = BAUD_9600; | |
15b611f6 JS |
851 | printk(KERN_INFO "sx: unsupported baud rate: %d.\n", |
852 | port->gs.baud); | |
1da177e4 LT |
853 | break; |
854 | } | |
855 | #undef e | |
856 | if (t > 0) { | |
15b611f6 JS |
857 | /* The baud rate is not set to 0, so we're enabeling DTR... -- REW */ |
858 | sx_setsignals(port, 1, -1); | |
1da177e4 | 859 | /* XXX This is not TA & MTA compatible */ |
15b611f6 | 860 | sx_write_channel_byte(port, hi_csr, 0xff); |
1da177e4 | 861 | |
15b611f6 JS |
862 | sx_write_channel_byte(port, hi_txbaud, t); |
863 | sx_write_channel_byte(port, hi_rxbaud, t); | |
1da177e4 | 864 | } else { |
15b611f6 | 865 | sx_setsignals(port, 0, -1); |
1da177e4 LT |
866 | } |
867 | } else { | |
868 | switch (port->gs.baud) { | |
15b611f6 JS |
869 | #define e(x) case x: t = CSR_ ## x; break |
870 | e(75); | |
871 | e(150); | |
872 | e(300); | |
873 | e(600); | |
874 | e(1200); | |
875 | e(2400); | |
876 | e(4800); | |
877 | e(1800); | |
878 | e(9600); | |
879 | e(19200); | |
880 | e(57600); | |
881 | e(38400); | |
882 | /* TA supports 110, but not 115200, MTA supports 115200, but not 110 */ | |
883 | case 110: | |
1da177e4 LT |
884 | if (port->board->ta_type == MOD_TA) { |
885 | t = CSR_110; | |
886 | break; | |
887 | } else { | |
888 | t = CSR_9600; | |
15b611f6 JS |
889 | printk(KERN_INFO "sx: Unsupported baud rate: " |
890 | "%d.\n", port->gs.baud); | |
1da177e4 LT |
891 | break; |
892 | } | |
15b611f6 | 893 | case 115200: |
1da177e4 LT |
894 | if (port->board->ta_type == MOD_TA) { |
895 | t = CSR_9600; | |
15b611f6 JS |
896 | printk(KERN_INFO "sx: Unsupported baud rate: " |
897 | "%d.\n", port->gs.baud); | |
1da177e4 LT |
898 | break; |
899 | } else { | |
900 | t = CSR_110; | |
901 | break; | |
902 | } | |
15b611f6 JS |
903 | case 0: |
904 | t = -1; | |
905 | break; | |
1da177e4 LT |
906 | default: |
907 | t = CSR_9600; | |
15b611f6 JS |
908 | printk(KERN_INFO "sx: Unsupported baud rate: %d.\n", |
909 | port->gs.baud); | |
1da177e4 LT |
910 | break; |
911 | } | |
912 | #undef e | |
913 | if (t >= 0) { | |
15b611f6 JS |
914 | sx_setsignals(port, 1, -1); |
915 | sx_write_channel_byte(port, hi_csr, t * 0x11); | |
1da177e4 | 916 | } else { |
15b611f6 | 917 | sx_setsignals(port, 0, -1); |
1da177e4 LT |
918 | } |
919 | } | |
920 | } | |
921 | ||
1da177e4 LT |
922 | /* Simon Allen's version of this routine was 225 lines long. 85 is a lot |
923 | better. -- REW */ | |
924 | ||
15b611f6 | 925 | static int sx_set_real_termios(void *ptr) |
1da177e4 LT |
926 | { |
927 | struct sx_port *port = ptr; | |
928 | ||
929 | func_enter2(); | |
930 | ||
b5391e29 | 931 | if (!port->gs.port.tty) |
1da177e4 LT |
932 | return 0; |
933 | ||
934 | /* What is this doing here? -- REW | |
935 | Ha! figured it out. It is to allow you to get DTR active again | |
936 | if you've dropped it with stty 0. Moved to set_baud, where it | |
937 | belongs (next to the drop dtr if baud == 0) -- REW */ | |
938 | /* sx_setsignals (port, 1, -1); */ | |
939 | ||
15b611f6 | 940 | sx_set_baud(port); |
1da177e4 | 941 | |
b5391e29 | 942 | #define CFLAG port->gs.port.tty->termios->c_cflag |
15b611f6 | 943 | sx_write_channel_byte(port, hi_mr1, |
b5391e29 AC |
944 | (C_PARENB(port->gs.port.tty) ? MR1_WITH : MR1_NONE) | |
945 | (C_PARODD(port->gs.port.tty) ? MR1_ODD : MR1_EVEN) | | |
946 | (C_CRTSCTS(port->gs.port.tty) ? MR1_RTS_RXFLOW : 0) | | |
15b611f6 JS |
947 | (((CFLAG & CSIZE) == CS8) ? MR1_8_BITS : 0) | |
948 | (((CFLAG & CSIZE) == CS7) ? MR1_7_BITS : 0) | | |
949 | (((CFLAG & CSIZE) == CS6) ? MR1_6_BITS : 0) | | |
950 | (((CFLAG & CSIZE) == CS5) ? MR1_5_BITS : 0)); | |
951 | ||
952 | sx_write_channel_byte(port, hi_mr2, | |
b5391e29 AC |
953 | (C_CRTSCTS(port->gs.port.tty) ? MR2_CTS_TXFLOW : 0) | |
954 | (C_CSTOPB(port->gs.port.tty) ? MR2_2_STOP : | |
15b611f6 | 955 | MR2_1_STOP)); |
1da177e4 LT |
956 | |
957 | switch (CFLAG & CSIZE) { | |
15b611f6 JS |
958 | case CS8: |
959 | sx_write_channel_byte(port, hi_mask, 0xff); | |
960 | break; | |
961 | case CS7: | |
962 | sx_write_channel_byte(port, hi_mask, 0x7f); | |
963 | break; | |
964 | case CS6: | |
965 | sx_write_channel_byte(port, hi_mask, 0x3f); | |
966 | break; | |
967 | case CS5: | |
968 | sx_write_channel_byte(port, hi_mask, 0x1f); | |
969 | break; | |
1da177e4 | 970 | default: |
32fb3ca8 AM |
971 | printk(KERN_INFO "sx: Invalid wordsize: %u\n", |
972 | (unsigned int)CFLAG & CSIZE); | |
1da177e4 LT |
973 | break; |
974 | } | |
975 | ||
15b611f6 | 976 | sx_write_channel_byte(port, hi_prtcl, |
b5391e29 AC |
977 | (I_IXON(port->gs.port.tty) ? SP_TXEN : 0) | |
978 | (I_IXOFF(port->gs.port.tty) ? SP_RXEN : 0) | | |
979 | (I_IXANY(port->gs.port.tty) ? SP_TANY : 0) | SP_DCEN); | |
1da177e4 | 980 | |
15b611f6 | 981 | sx_write_channel_byte(port, hi_break, |
b5391e29 AC |
982 | (I_IGNBRK(port->gs.port.tty) ? BR_IGN : 0 | |
983 | I_BRKINT(port->gs.port.tty) ? BR_INT : 0)); | |
1da177e4 | 984 | |
b5391e29 AC |
985 | sx_write_channel_byte(port, hi_txon, START_CHAR(port->gs.port.tty)); |
986 | sx_write_channel_byte(port, hi_rxon, START_CHAR(port->gs.port.tty)); | |
987 | sx_write_channel_byte(port, hi_txoff, STOP_CHAR(port->gs.port.tty)); | |
988 | sx_write_channel_byte(port, hi_rxoff, STOP_CHAR(port->gs.port.tty)); | |
1da177e4 LT |
989 | |
990 | sx_reconfigure_port(port); | |
991 | ||
992 | /* Tell line discipline whether we will do input cooking */ | |
b5391e29 AC |
993 | if (I_OTHER(port->gs.port.tty)) { |
994 | clear_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags); | |
1da177e4 | 995 | } else { |
b5391e29 | 996 | set_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags); |
1da177e4 | 997 | } |
15b611f6 | 998 | sx_dprintk(SX_DEBUG_TERMIOS, "iflags: %x(%d) ", |
b5391e29 AC |
999 | (unsigned int)port->gs.port.tty->termios->c_iflag, |
1000 | I_OTHER(port->gs.port.tty)); | |
1da177e4 LT |
1001 | |
1002 | /* Tell line discipline whether we will do output cooking. | |
1003 | * If OPOST is set and no other output flags are set then we can do output | |
1004 | * processing. Even if only *one* other flag in the O_OTHER group is set | |
1005 | * we do cooking in software. | |
1006 | */ | |
b5391e29 AC |
1007 | if (O_OPOST(port->gs.port.tty) && !O_OTHER(port->gs.port.tty)) { |
1008 | set_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags); | |
1da177e4 | 1009 | } else { |
b5391e29 | 1010 | clear_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags); |
1da177e4 | 1011 | } |
15b611f6 | 1012 | sx_dprintk(SX_DEBUG_TERMIOS, "oflags: %x(%d)\n", |
b5391e29 AC |
1013 | (unsigned int)port->gs.port.tty->termios->c_oflag, |
1014 | O_OTHER(port->gs.port.tty)); | |
1da177e4 | 1015 | /* port->c_dcd = sx_get_CD (port); */ |
15b611f6 | 1016 | func_exit(); |
1da177e4 LT |
1017 | return 0; |
1018 | } | |
1019 | ||
1da177e4 LT |
1020 | /* ********************************************************************** * |
1021 | * the interrupt related routines * | |
1022 | * ********************************************************************** */ | |
1023 | ||
1024 | /* Note: | |
1025 | Other drivers use the macro "MIN" to calculate how much to copy. | |
1026 | This has the disadvantage that it will evaluate parts twice. That's | |
1027 | expensive when it's IO (and the compiler cannot optimize those away!). | |
1028 | Moreover, I'm not sure that you're race-free. | |
1029 | ||
1030 | I assign a value, and then only allow the value to decrease. This | |
1031 | is always safe. This makes the code a few lines longer, and you | |
1032 | know I'm dead against that, but I think it is required in this | |
1033 | case. */ | |
1034 | ||
15b611f6 | 1035 | static void sx_transmit_chars(struct sx_port *port) |
1da177e4 LT |
1036 | { |
1037 | int c; | |
1038 | int tx_ip; | |
1039 | int txroom; | |
1040 | ||
15b611f6 JS |
1041 | func_enter2(); |
1042 | sx_dprintk(SX_DEBUG_TRANSMIT, "Port %p: transmit %d chars\n", | |
1043 | port, port->gs.xmit_cnt); | |
1da177e4 | 1044 | |
15b611f6 | 1045 | if (test_and_set_bit(SX_PORT_TRANSMIT_LOCK, &port->locks)) { |
1da177e4 LT |
1046 | return; |
1047 | } | |
1048 | ||
1049 | while (1) { | |
1050 | c = port->gs.xmit_cnt; | |
1051 | ||
15b611f6 JS |
1052 | sx_dprintk(SX_DEBUG_TRANSMIT, "Copying %d ", c); |
1053 | tx_ip = sx_read_channel_byte(port, hi_txipos); | |
1da177e4 LT |
1054 | |
1055 | /* Took me 5 minutes to deduce this formula. | |
1056 | Luckily it is literally in the manual in section 6.5.4.3.5 */ | |
15b611f6 JS |
1057 | txroom = (sx_read_channel_byte(port, hi_txopos) - tx_ip - 1) & |
1058 | 0xff; | |
1da177e4 LT |
1059 | |
1060 | /* Don't copy more bytes than there is room for in the buffer */ | |
1061 | if (c > txroom) | |
1062 | c = txroom; | |
15b611f6 | 1063 | sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%d) ", c, txroom); |
1da177e4 LT |
1064 | |
1065 | /* Don't copy past the end of the hardware transmit buffer */ | |
15b611f6 | 1066 | if (c > 0x100 - tx_ip) |
1da177e4 LT |
1067 | c = 0x100 - tx_ip; |
1068 | ||
15b611f6 | 1069 | sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%d) ", c, 0x100 - tx_ip); |
1da177e4 LT |
1070 | |
1071 | /* Don't copy pas the end of the source buffer */ | |
15b611f6 | 1072 | if (c > SERIAL_XMIT_SIZE - port->gs.xmit_tail) |
1da177e4 LT |
1073 | c = SERIAL_XMIT_SIZE - port->gs.xmit_tail; |
1074 | ||
15b611f6 JS |
1075 | sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%ld) \n", |
1076 | c, SERIAL_XMIT_SIZE - port->gs.xmit_tail); | |
1da177e4 | 1077 | |
15b611f6 JS |
1078 | /* If for one reason or another, we can't copy more data, we're |
1079 | done! */ | |
1080 | if (c == 0) | |
1081 | break; | |
1da177e4 | 1082 | |
15b611f6 JS |
1083 | memcpy_toio(port->board->base + CHAN_OFFSET(port, hi_txbuf) + |
1084 | tx_ip, port->gs.xmit_buf + port->gs.xmit_tail, c); | |
1da177e4 LT |
1085 | |
1086 | /* Update the pointer in the card */ | |
15b611f6 | 1087 | sx_write_channel_byte(port, hi_txipos, (tx_ip + c) & 0xff); |
1da177e4 LT |
1088 | |
1089 | /* Update the kernel buffer end */ | |
15b611f6 JS |
1090 | port->gs.xmit_tail = (port->gs.xmit_tail + c) & |
1091 | (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
1092 | |
1093 | /* This one last. (this is essential) | |
15b611f6 JS |
1094 | It would allow others to start putting more data into the |
1095 | buffer! */ | |
1da177e4 LT |
1096 | port->gs.xmit_cnt -= c; |
1097 | } | |
1098 | ||
1099 | if (port->gs.xmit_cnt == 0) { | |
15b611f6 | 1100 | sx_disable_tx_interrupts(port); |
1da177e4 LT |
1101 | } |
1102 | ||
b5391e29 AC |
1103 | if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) { |
1104 | tty_wakeup(port->gs.port.tty); | |
15b611f6 JS |
1105 | sx_dprintk(SX_DEBUG_TRANSMIT, "Waking up.... ldisc (%d)....\n", |
1106 | port->gs.wakeup_chars); | |
1da177e4 LT |
1107 | } |
1108 | ||
15b611f6 JS |
1109 | clear_bit(SX_PORT_TRANSMIT_LOCK, &port->locks); |
1110 | func_exit(); | |
1da177e4 LT |
1111 | } |
1112 | ||
1da177e4 LT |
1113 | /* Note the symmetry between receiving chars and transmitting them! |
1114 | Note: The kernel should have implemented both a receive buffer and | |
1115 | a transmit buffer. */ | |
1116 | ||
1117 | /* Inlined: Called only once. Remove the inline when you add another call */ | |
15b611f6 | 1118 | static inline void sx_receive_chars(struct sx_port *port) |
1da177e4 LT |
1119 | { |
1120 | int c; | |
1121 | int rx_op; | |
1122 | struct tty_struct *tty; | |
15b611f6 | 1123 | int copied = 0; |
33f0f88f | 1124 | unsigned char *rp; |
1da177e4 | 1125 | |
15b611f6 | 1126 | func_enter2(); |
b5391e29 | 1127 | tty = port->gs.port.tty; |
1da177e4 | 1128 | while (1) { |
15b611f6 JS |
1129 | rx_op = sx_read_channel_byte(port, hi_rxopos); |
1130 | c = (sx_read_channel_byte(port, hi_rxipos) - rx_op) & 0xff; | |
1da177e4 | 1131 | |
15b611f6 | 1132 | sx_dprintk(SX_DEBUG_RECEIVE, "rxop=%d, c = %d.\n", rx_op, c); |
1da177e4 | 1133 | |
d904ffd6 | 1134 | /* Don't copy past the end of the hardware receive buffer */ |
15b611f6 JS |
1135 | if (rx_op + c > 0x100) |
1136 | c = 0x100 - rx_op; | |
d904ffd6 | 1137 | |
15b611f6 | 1138 | sx_dprintk(SX_DEBUG_RECEIVE, "c = %d.\n", c); |
d904ffd6 | 1139 | |
1da177e4 | 1140 | /* Don't copy more bytes than there is room for in the buffer */ |
33f0f88f AC |
1141 | |
1142 | c = tty_prepare_flip_string(tty, &rp, c); | |
1da177e4 | 1143 | |
15b611f6 | 1144 | sx_dprintk(SX_DEBUG_RECEIVE, "c = %d.\n", c); |
1da177e4 | 1145 | |
1da177e4 | 1146 | /* If for one reason or another, we can't copy more data, we're done! */ |
15b611f6 JS |
1147 | if (c == 0) |
1148 | break; | |
1da177e4 | 1149 | |
15b611f6 JS |
1150 | sx_dprintk(SX_DEBUG_RECEIVE, "Copying over %d chars. First is " |
1151 | "%d at %lx\n", c, read_sx_byte(port->board, | |
1152 | CHAN_OFFSET(port, hi_rxbuf) + rx_op), | |
1153 | CHAN_OFFSET(port, hi_rxbuf)); | |
1154 | memcpy_fromio(rp, port->board->base + | |
1155 | CHAN_OFFSET(port, hi_rxbuf) + rx_op, c); | |
1da177e4 LT |
1156 | |
1157 | /* This one last. ( Not essential.) | |
15b611f6 JS |
1158 | It allows the card to start putting more data into the |
1159 | buffer! | |
1da177e4 | 1160 | Update the pointer in the card */ |
15b611f6 | 1161 | sx_write_channel_byte(port, hi_rxopos, (rx_op + c) & 0xff); |
1da177e4 LT |
1162 | |
1163 | copied += c; | |
1164 | } | |
1165 | if (copied) { | |
1166 | struct timeval tv; | |
1167 | ||
15b611f6 JS |
1168 | do_gettimeofday(&tv); |
1169 | sx_dprintk(SX_DEBUG_RECEIVE, "pushing flipq port %d (%3d " | |
1170 | "chars): %d.%06d (%d/%d)\n", port->line, | |
1171 | copied, (int)(tv.tv_sec % 60), (int)tv.tv_usec, | |
1172 | tty->raw, tty->real_raw); | |
1da177e4 | 1173 | |
15b611f6 JS |
1174 | /* Tell the rest of the system the news. Great news. New |
1175 | characters! */ | |
1176 | tty_flip_buffer_push(tty); | |
1da177e4 LT |
1177 | /* tty_schedule_flip (tty); */ |
1178 | } | |
1179 | ||
15b611f6 | 1180 | func_exit(); |
1da177e4 LT |
1181 | } |
1182 | ||
1183 | /* Inlined: it is called only once. Remove the inline if you add another | |
1184 | call */ | |
15b611f6 | 1185 | static inline void sx_check_modem_signals(struct sx_port *port) |
1da177e4 LT |
1186 | { |
1187 | int hi_state; | |
1188 | int c_dcd; | |
1189 | ||
15b611f6 JS |
1190 | hi_state = sx_read_channel_byte(port, hi_state); |
1191 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n", | |
31f35939 | 1192 | port->c_dcd, tty_port_carrier_raised(&port->gs.port)); |
1da177e4 LT |
1193 | |
1194 | if (hi_state & ST_BREAK) { | |
1195 | hi_state &= ~ST_BREAK; | |
15b611f6 JS |
1196 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a break.\n"); |
1197 | sx_write_channel_byte(port, hi_state, hi_state); | |
1198 | gs_got_break(&port->gs); | |
1da177e4 LT |
1199 | } |
1200 | if (hi_state & ST_DCD) { | |
1201 | hi_state &= ~ST_DCD; | |
15b611f6 JS |
1202 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n"); |
1203 | sx_write_channel_byte(port, hi_state, hi_state); | |
31f35939 | 1204 | c_dcd = tty_port_carrier_raised(&port->gs.port); |
15b611f6 | 1205 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd); |
1da177e4 LT |
1206 | if (c_dcd != port->c_dcd) { |
1207 | port->c_dcd = c_dcd; | |
31f35939 | 1208 | if (tty_port_carrier_raised(&port->gs.port)) { |
1da177e4 | 1209 | /* DCD went UP */ |
15b611f6 JS |
1210 | if ((sx_read_channel_byte(port, hi_hstat) != |
1211 | HS_IDLE_CLOSED) && | |
b5391e29 | 1212 | !(port->gs.port.tty->termios-> |
15b611f6 JS |
1213 | c_cflag & CLOCAL)) { |
1214 | /* Are we blocking in open? */ | |
1215 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " | |
1216 | "active, unblocking open\n"); | |
b5391e29 | 1217 | wake_up_interruptible(&port->gs.port. |
15b611f6 | 1218 | open_wait); |
1da177e4 | 1219 | } else { |
15b611f6 JS |
1220 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " |
1221 | "raised. Ignoring.\n"); | |
1da177e4 LT |
1222 | } |
1223 | } else { | |
1224 | /* DCD went down! */ | |
b5391e29 | 1225 | if (!(port->gs.port.tty->termios->c_cflag & CLOCAL)){ |
15b611f6 JS |
1226 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " |
1227 | "dropped. hanging up....\n"); | |
b5391e29 | 1228 | tty_hangup(port->gs.port.tty); |
1da177e4 | 1229 | } else { |
15b611f6 JS |
1230 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " |
1231 | "dropped. ignoring.\n"); | |
1da177e4 LT |
1232 | } |
1233 | } | |
1234 | } else { | |
15b611f6 JS |
1235 | sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Hmmm. card told us " |
1236 | "DCD changed, but it didn't.\n"); | |
1da177e4 LT |
1237 | } |
1238 | } | |
1239 | } | |
1240 | ||
1da177e4 LT |
1241 | /* This is what an interrupt routine should look like. |
1242 | * Small, elegant, clear. | |
1243 | */ | |
1244 | ||
15b611f6 | 1245 | static irqreturn_t sx_interrupt(int irq, void *ptr) |
1da177e4 LT |
1246 | { |
1247 | struct sx_board *board = ptr; | |
1248 | struct sx_port *port; | |
1249 | int i; | |
1250 | ||
15b611f6 JS |
1251 | func_enter(); |
1252 | sx_dprintk(SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n", irq, | |
1253 | board->irq); | |
1da177e4 LT |
1254 | |
1255 | /* AAargh! The order in which to do these things is essential and | |
1256 | not trivial. | |
1257 | ||
1258 | - Rate limit goes before "recursive". Otherwise a series of | |
15b611f6 | 1259 | recursive calls will hang the machine in the interrupt routine. |
1da177e4 LT |
1260 | |
1261 | - hardware twiddling goes before "recursive". Otherwise when we | |
15b611f6 JS |
1262 | poll the card, and a recursive interrupt happens, we won't |
1263 | ack the card, so it might keep on interrupting us. (especially | |
1264 | level sensitive interrupt systems like PCI). | |
1da177e4 LT |
1265 | |
1266 | - Rate limit goes before hardware twiddling. Otherwise we won't | |
15b611f6 | 1267 | catch a card that has gone bonkers. |
1da177e4 LT |
1268 | |
1269 | - The "initialized" test goes after the hardware twiddling. Otherwise | |
15b611f6 | 1270 | the card will stick us in the interrupt routine again. |
1da177e4 LT |
1271 | |
1272 | - The initialized test goes before recursive. | |
15b611f6 | 1273 | */ |
1da177e4 LT |
1274 | |
1275 | #ifdef IRQ_RATE_LIMIT | |
1276 | /* Aaargh! I'm ashamed. This costs more lines-of-code than the | |
15b611f6 JS |
1277 | actual interrupt routine!. (Well, used to when I wrote that |
1278 | comment) */ | |
1da177e4 LT |
1279 | { |
1280 | static int lastjif; | |
15b611f6 | 1281 | static int nintr = 0; |
1da177e4 LT |
1282 | |
1283 | if (lastjif == jiffies) { | |
1284 | if (++nintr > IRQ_RATE_LIMIT) { | |
15b611f6 JS |
1285 | free_irq(board->irq, board); |
1286 | printk(KERN_ERR "sx: Too many interrupts. " | |
1287 | "Turning off interrupt %d.\n", | |
1288 | board->irq); | |
1da177e4 LT |
1289 | } |
1290 | } else { | |
1291 | lastjif = jiffies; | |
1292 | nintr = 0; | |
1293 | } | |
1294 | } | |
1295 | #endif | |
1296 | ||
1da177e4 LT |
1297 | if (board->irq == irq) { |
1298 | /* Tell the card we've noticed the interrupt. */ | |
1299 | ||
15b611f6 JS |
1300 | sx_write_board_word(board, cc_int_pending, 0); |
1301 | if (IS_SX_BOARD(board)) { | |
1302 | write_sx_byte(board, SX_RESET_IRQ, 1); | |
1da177e4 | 1303 | } else if (IS_EISA_BOARD(board)) { |
15b611f6 JS |
1304 | inb(board->eisa_base + 0xc03); |
1305 | write_sx_word(board, 8, 0); | |
1da177e4 | 1306 | } else { |
15b611f6 JS |
1307 | write_sx_byte(board, SI2_ISA_INTCLEAR, |
1308 | SI2_ISA_INTCLEAR_CLEAR); | |
1309 | write_sx_byte(board, SI2_ISA_INTCLEAR, | |
1310 | SI2_ISA_INTCLEAR_SET); | |
1da177e4 LT |
1311 | } |
1312 | } | |
1313 | ||
1314 | if (!sx_initialized) | |
1315 | return IRQ_HANDLED; | |
1316 | if (!(board->flags & SX_BOARD_INITIALIZED)) | |
1317 | return IRQ_HANDLED; | |
1318 | ||
15b611f6 JS |
1319 | if (test_and_set_bit(SX_BOARD_INTR_LOCK, &board->locks)) { |
1320 | printk(KERN_ERR "Recursive interrupt! (%d)\n", board->irq); | |
1da177e4 LT |
1321 | return IRQ_HANDLED; |
1322 | } | |
1323 | ||
15b611f6 | 1324 | for (i = 0; i < board->nports; i++) { |
1da177e4 | 1325 | port = &board->ports[i]; |
b5391e29 | 1326 | if (port->gs.port.flags & GS_ACTIVE) { |
15b611f6 JS |
1327 | if (sx_read_channel_byte(port, hi_state)) { |
1328 | sx_dprintk(SX_DEBUG_INTERRUPTS, "Port %d: " | |
1329 | "modem signal change?... \n",i); | |
1330 | sx_check_modem_signals(port); | |
1da177e4 LT |
1331 | } |
1332 | if (port->gs.xmit_cnt) { | |
15b611f6 | 1333 | sx_transmit_chars(port); |
1da177e4 | 1334 | } |
b5391e29 | 1335 | if (!(port->gs.port.flags & SX_RX_THROTTLE)) { |
15b611f6 | 1336 | sx_receive_chars(port); |
1da177e4 LT |
1337 | } |
1338 | } | |
1339 | } | |
1340 | ||
15b611f6 | 1341 | clear_bit(SX_BOARD_INTR_LOCK, &board->locks); |
1da177e4 | 1342 | |
15b611f6 JS |
1343 | sx_dprintk(SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n", irq, |
1344 | board->irq); | |
1345 | func_exit(); | |
1da177e4 LT |
1346 | return IRQ_HANDLED; |
1347 | } | |
1348 | ||
15b611f6 | 1349 | static void sx_pollfunc(unsigned long data) |
1da177e4 | 1350 | { |
15b611f6 | 1351 | struct sx_board *board = (struct sx_board *)data; |
1da177e4 | 1352 | |
15b611f6 | 1353 | func_enter(); |
1da177e4 | 1354 | |
15b611f6 | 1355 | sx_interrupt(0, board); |
1da177e4 | 1356 | |
c9594643 | 1357 | mod_timer(&board->timer, jiffies + sx_poll); |
15b611f6 | 1358 | func_exit(); |
1da177e4 LT |
1359 | } |
1360 | ||
1da177e4 LT |
1361 | /* ********************************************************************** * |
1362 | * Here are the routines that actually * | |
1363 | * interface with the generic_serial driver * | |
1364 | * ********************************************************************** */ | |
1365 | ||
1366 | /* Ehhm. I don't know how to fiddle with interrupts on the SX card. --REW */ | |
1367 | /* Hmm. Ok I figured it out. You don't. */ | |
1368 | ||
15b611f6 | 1369 | static void sx_disable_tx_interrupts(void *ptr) |
1da177e4 | 1370 | { |
15b611f6 | 1371 | struct sx_port *port = ptr; |
1da177e4 LT |
1372 | func_enter2(); |
1373 | ||
b5391e29 | 1374 | port->gs.port.flags &= ~GS_TX_INTEN; |
1da177e4 LT |
1375 | |
1376 | func_exit(); | |
1377 | } | |
1378 | ||
15b611f6 | 1379 | static void sx_enable_tx_interrupts(void *ptr) |
1da177e4 | 1380 | { |
15b611f6 | 1381 | struct sx_port *port = ptr; |
1da177e4 LT |
1382 | int data_in_buffer; |
1383 | func_enter2(); | |
1384 | ||
1385 | /* First transmit the characters that we're supposed to */ | |
15b611f6 | 1386 | sx_transmit_chars(port); |
1da177e4 LT |
1387 | |
1388 | /* The sx card will never interrupt us if we don't fill the buffer | |
1389 | past 25%. So we keep considering interrupts off if that's the case. */ | |
15b611f6 JS |
1390 | data_in_buffer = (sx_read_channel_byte(port, hi_txipos) - |
1391 | sx_read_channel_byte(port, hi_txopos)) & 0xff; | |
1da177e4 LT |
1392 | |
1393 | /* XXX Must be "HIGH_WATER" for SI card according to doc. */ | |
15b611f6 | 1394 | if (data_in_buffer < LOW_WATER) |
b5391e29 | 1395 | port->gs.port.flags &= ~GS_TX_INTEN; |
1da177e4 LT |
1396 | |
1397 | func_exit(); | |
1398 | } | |
1399 | ||
15b611f6 | 1400 | static void sx_disable_rx_interrupts(void *ptr) |
1da177e4 LT |
1401 | { |
1402 | /* struct sx_port *port = ptr; */ | |
1403 | func_enter(); | |
1404 | ||
1405 | func_exit(); | |
1406 | } | |
1407 | ||
15b611f6 | 1408 | static void sx_enable_rx_interrupts(void *ptr) |
1da177e4 LT |
1409 | { |
1410 | /* struct sx_port *port = ptr; */ | |
1411 | func_enter(); | |
1412 | ||
1413 | func_exit(); | |
1414 | } | |
1415 | ||
1da177e4 | 1416 | /* Jeez. Isn't this simple? */ |
31f35939 | 1417 | static int sx_carrier_raised(struct tty_port *port) |
1da177e4 | 1418 | { |
31f35939 AC |
1419 | struct sx_port *sp = container_of(port, struct sx_port, gs.port); |
1420 | return ((sx_read_channel_byte(sp, hi_ip) & IP_DCD) != 0); | |
1da177e4 LT |
1421 | } |
1422 | ||
1da177e4 | 1423 | /* Jeez. Isn't this simple? */ |
15b611f6 | 1424 | static int sx_chars_in_buffer(void *ptr) |
1da177e4 LT |
1425 | { |
1426 | struct sx_port *port = ptr; | |
1427 | func_enter2(); | |
1428 | ||
1429 | func_exit(); | |
15b611f6 JS |
1430 | return ((sx_read_channel_byte(port, hi_txipos) - |
1431 | sx_read_channel_byte(port, hi_txopos)) & 0xff); | |
1da177e4 LT |
1432 | } |
1433 | ||
15b611f6 | 1434 | static void sx_shutdown_port(void *ptr) |
1da177e4 | 1435 | { |
15b611f6 | 1436 | struct sx_port *port = ptr; |
1da177e4 LT |
1437 | |
1438 | func_enter(); | |
1439 | ||
b5391e29 AC |
1440 | port->gs.port.flags &= ~GS_ACTIVE; |
1441 | if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) { | |
15b611f6 | 1442 | sx_setsignals(port, 0, 0); |
1da177e4 LT |
1443 | sx_reconfigure_port(port); |
1444 | } | |
1445 | ||
1446 | func_exit(); | |
1447 | } | |
1448 | ||
1da177e4 LT |
1449 | /* ********************************************************************** * |
1450 | * Here are the routines that actually * | |
1451 | * interface with the rest of the system * | |
1452 | * ********************************************************************** */ | |
1453 | ||
15b611f6 | 1454 | static int sx_open(struct tty_struct *tty, struct file *filp) |
1da177e4 LT |
1455 | { |
1456 | struct sx_port *port; | |
1457 | int retval, line; | |
1458 | unsigned long flags; | |
1459 | ||
1460 | func_enter(); | |
1461 | ||
1462 | if (!sx_initialized) { | |
1463 | return -EIO; | |
1464 | } | |
1465 | ||
1466 | line = tty->index; | |
15b611f6 | 1467 | sx_dprintk(SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, " |
ba25f9dc | 1468 | "np=%d)\n", task_pid_nr(current), line, tty, |
15b611f6 | 1469 | current->signal->tty, sx_nports); |
1da177e4 LT |
1470 | |
1471 | if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports)) | |
1472 | return -ENODEV; | |
1473 | ||
15b611f6 | 1474 | port = &sx_ports[line]; |
1da177e4 | 1475 | port->c_dcd = 0; /* Make sure that the first interrupt doesn't detect a |
15b611f6 | 1476 | 1 -> 0 transition. */ |
1da177e4 | 1477 | |
15b611f6 | 1478 | sx_dprintk(SX_DEBUG_OPEN, "port = %p c_dcd = %d\n", port, port->c_dcd); |
1da177e4 LT |
1479 | |
1480 | spin_lock_irqsave(&port->gs.driver_lock, flags); | |
1481 | ||
1482 | tty->driver_data = port; | |
b5391e29 AC |
1483 | port->gs.port.tty = tty; |
1484 | port->gs.port.count++; | |
1da177e4 LT |
1485 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); |
1486 | ||
15b611f6 | 1487 | sx_dprintk(SX_DEBUG_OPEN, "starting port\n"); |
1da177e4 LT |
1488 | |
1489 | /* | |
1490 | * Start up serial port | |
1491 | */ | |
1492 | retval = gs_init_port(&port->gs); | |
15b611f6 | 1493 | sx_dprintk(SX_DEBUG_OPEN, "done gs_init\n"); |
1da177e4 | 1494 | if (retval) { |
b5391e29 | 1495 | port->gs.port.count--; |
1da177e4 LT |
1496 | return retval; |
1497 | } | |
1498 | ||
b5391e29 AC |
1499 | port->gs.port.flags |= GS_ACTIVE; |
1500 | if (port->gs.port.count <= 1) | |
15b611f6 | 1501 | sx_setsignals(port, 1, 1); |
1da177e4 LT |
1502 | |
1503 | #if 0 | |
1504 | if (sx_debug & SX_DEBUG_OPEN) | |
15b611f6 | 1505 | my_hd(port, sizeof(*port)); |
1da177e4 LT |
1506 | #else |
1507 | if (sx_debug & SX_DEBUG_OPEN) | |
15b611f6 | 1508 | my_hd_io(port->board->base + port->ch_base, sizeof(*port)); |
1da177e4 LT |
1509 | #endif |
1510 | ||
b5391e29 | 1511 | if (port->gs.port.count <= 1) { |
15b611f6 JS |
1512 | if (sx_send_command(port, HS_LOPEN, -1, HS_IDLE_OPEN) != 1) { |
1513 | printk(KERN_ERR "sx: Card didn't respond to LOPEN " | |
1514 | "command.\n"); | |
1da177e4 | 1515 | spin_lock_irqsave(&port->gs.driver_lock, flags); |
b5391e29 | 1516 | port->gs.port.count--; |
1da177e4 LT |
1517 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); |
1518 | return -EIO; | |
1519 | } | |
1520 | } | |
1521 | ||
1522 | retval = gs_block_til_ready(port, filp); | |
15b611f6 | 1523 | sx_dprintk(SX_DEBUG_OPEN, "Block til ready returned %d. Count=%d\n", |
b5391e29 | 1524 | retval, port->gs.port.count); |
1da177e4 LT |
1525 | |
1526 | if (retval) { | |
15b611f6 | 1527 | /* |
b5391e29 | 1528 | * Don't lower gs.port.count here because sx_close() will be called later |
15b611f6 | 1529 | */ |
1da177e4 LT |
1530 | |
1531 | return retval; | |
1532 | } | |
1533 | /* tty->low_latency = 1; */ | |
1534 | ||
31f35939 | 1535 | port->c_dcd = sx_carrier_raised(&port->gs.port); |
15b611f6 | 1536 | sx_dprintk(SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd); |
1da177e4 LT |
1537 | |
1538 | func_exit(); | |
1539 | return 0; | |
1540 | ||
1541 | } | |
1542 | ||
15b611f6 | 1543 | static void sx_close(void *ptr) |
1da177e4 | 1544 | { |
15b611f6 | 1545 | struct sx_port *port = ptr; |
1da177e4 | 1546 | /* Give the port 5 seconds to close down. */ |
15b611f6 | 1547 | int to = 5 * HZ; |
1da177e4 | 1548 | |
15b611f6 | 1549 | func_enter(); |
1da177e4 | 1550 | |
15b611f6 JS |
1551 | sx_setsignals(port, 0, 0); |
1552 | sx_reconfigure_port(port); | |
1553 | sx_send_command(port, HS_CLOSE, 0, 0); | |
1da177e4 | 1554 | |
15b611f6 | 1555 | while (to-- && (sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED)) |
1da177e4 LT |
1556 | if (msleep_interruptible(10)) |
1557 | break; | |
15b611f6 JS |
1558 | if (sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED) { |
1559 | if (sx_send_command(port, HS_FORCE_CLOSED, -1, HS_IDLE_CLOSED) | |
1560 | != 1) { | |
1561 | printk(KERN_ERR "sx: sent the force_close command, but " | |
1562 | "card didn't react\n"); | |
1da177e4 | 1563 | } else |
15b611f6 JS |
1564 | sx_dprintk(SX_DEBUG_CLOSE, "sent the force_close " |
1565 | "command.\n"); | |
1da177e4 LT |
1566 | } |
1567 | ||
15b611f6 | 1568 | sx_dprintk(SX_DEBUG_CLOSE, "waited %d jiffies for close. count=%d\n", |
b5391e29 | 1569 | 5 * HZ - to - 1, port->gs.port.count); |
1da177e4 | 1570 | |
b5391e29 | 1571 | if (port->gs.port.count) { |
15b611f6 | 1572 | sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n", |
b5391e29 | 1573 | port->gs.port.count); |
15b611f6 | 1574 | /*printk("%s SETTING port count to zero: %p count: %d\n", |
b5391e29 AC |
1575 | __func__, port, port->gs.port.count); |
1576 | port->gs.port.count = 0;*/ | |
1da177e4 LT |
1577 | } |
1578 | ||
15b611f6 | 1579 | func_exit(); |
1da177e4 LT |
1580 | } |
1581 | ||
1da177e4 | 1582 | /* This is relatively thorough. But then again it is only 20 lines. */ |
15b611f6 JS |
1583 | #define MARCHUP for (i = min; i < max; i++) |
1584 | #define MARCHDOWN for (i = max - 1; i >= min; i--) | |
1585 | #define W0 write_sx_byte(board, i, 0x55) | |
1586 | #define W1 write_sx_byte(board, i, 0xaa) | |
1587 | #define R0 if (read_sx_byte(board, i) != 0x55) return 1 | |
1588 | #define R1 if (read_sx_byte(board, i) != 0xaa) return 1 | |
1da177e4 LT |
1589 | |
1590 | /* This memtest takes a human-noticable time. You normally only do it | |
1591 | once a boot, so I guess that it is worth it. */ | |
15b611f6 | 1592 | static int do_memtest(struct sx_board *board, int min, int max) |
1da177e4 LT |
1593 | { |
1594 | int i; | |
1595 | ||
1596 | /* This is a marchb. Theoretically, marchb catches much more than | |
1597 | simpler tests. In practise, the longer test just catches more | |
1598 | intermittent errors. -- REW | |
1599 | (For the theory behind memory testing see: | |
1600 | Testing Semiconductor Memories by A.J. van de Goor.) */ | |
15b611f6 JS |
1601 | MARCHUP { |
1602 | W0; | |
1603 | } | |
1604 | MARCHUP { | |
1605 | R0; | |
1606 | W1; | |
1607 | R1; | |
1608 | W0; | |
1609 | R0; | |
1610 | W1; | |
1611 | } | |
1612 | MARCHUP { | |
1613 | R1; | |
1614 | W0; | |
1615 | W1; | |
1616 | } | |
1617 | MARCHDOWN { | |
1618 | R1; | |
1619 | W0; | |
1620 | W1; | |
1621 | W0; | |
1622 | } | |
1623 | MARCHDOWN { | |
1624 | R0; | |
1625 | W1; | |
1626 | W0; | |
1627 | } | |
1da177e4 LT |
1628 | |
1629 | return 0; | |
1630 | } | |
1631 | ||
1da177e4 LT |
1632 | #undef MARCHUP |
1633 | #undef MARCHDOWN | |
1634 | #undef W0 | |
1635 | #undef W1 | |
1636 | #undef R0 | |
1637 | #undef R1 | |
1638 | ||
15b611f6 JS |
1639 | #define MARCHUP for (i = min; i < max; i += 2) |
1640 | #define MARCHDOWN for (i = max - 1; i >= min; i -= 2) | |
1641 | #define W0 write_sx_word(board, i, 0x55aa) | |
1642 | #define W1 write_sx_word(board, i, 0xaa55) | |
1643 | #define R0 if (read_sx_word(board, i) != 0x55aa) return 1 | |
1644 | #define R1 if (read_sx_word(board, i) != 0xaa55) return 1 | |
1da177e4 LT |
1645 | |
1646 | #if 0 | |
1647 | /* This memtest takes a human-noticable time. You normally only do it | |
1648 | once a boot, so I guess that it is worth it. */ | |
15b611f6 | 1649 | static int do_memtest_w(struct sx_board *board, int min, int max) |
1da177e4 LT |
1650 | { |
1651 | int i; | |
1652 | ||
15b611f6 JS |
1653 | MARCHUP { |
1654 | W0; | |
1655 | } | |
1656 | MARCHUP { | |
1657 | R0; | |
1658 | W1; | |
1659 | R1; | |
1660 | W0; | |
1661 | R0; | |
1662 | W1; | |
1663 | } | |
1664 | MARCHUP { | |
1665 | R1; | |
1666 | W0; | |
1667 | W1; | |
1668 | } | |
1669 | MARCHDOWN { | |
1670 | R1; | |
1671 | W0; | |
1672 | W1; | |
1673 | W0; | |
1674 | } | |
1675 | MARCHDOWN { | |
1676 | R0; | |
1677 | W1; | |
1678 | W0; | |
1679 | } | |
1da177e4 LT |
1680 | |
1681 | return 0; | |
1682 | } | |
1683 | #endif | |
1684 | ||
11af7478 AC |
1685 | static long sx_fw_ioctl(struct file *filp, unsigned int cmd, |
1686 | unsigned long arg) | |
1da177e4 | 1687 | { |
11af7478 | 1688 | long rc = 0; |
1da177e4 LT |
1689 | int __user *descr = (int __user *)arg; |
1690 | int i; | |
1691 | static struct sx_board *board = NULL; | |
1692 | int nbytes, offset; | |
1693 | unsigned long data; | |
1694 | char *tmp; | |
1695 | ||
1696 | func_enter(); | |
1697 | ||
11af7478 | 1698 | if (!capable(CAP_SYS_RAWIO)) |
1da177e4 | 1699 | return -EPERM; |
11af7478 AC |
1700 | |
1701 | lock_kernel(); | |
1da177e4 | 1702 | |
15b611f6 | 1703 | sx_dprintk(SX_DEBUG_FIRMWARE, "IOCTL %x: %lx\n", cmd, arg); |
1da177e4 | 1704 | |
15b611f6 JS |
1705 | if (!board) |
1706 | board = &boards[0]; | |
1da177e4 | 1707 | if (board->flags & SX_BOARD_PRESENT) { |
15b611f6 JS |
1708 | sx_dprintk(SX_DEBUG_FIRMWARE, "Board present! (%x)\n", |
1709 | board->flags); | |
1da177e4 | 1710 | } else { |
15b611f6 JS |
1711 | sx_dprintk(SX_DEBUG_FIRMWARE, "Board not present! (%x) all:", |
1712 | board->flags); | |
1713 | for (i = 0; i < SX_NBOARDS; i++) | |
1714 | sx_dprintk(SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags); | |
1715 | sx_dprintk(SX_DEBUG_FIRMWARE, "\n"); | |
736d5453 DC |
1716 | rc = -EIO; |
1717 | goto out; | |
1da177e4 LT |
1718 | } |
1719 | ||
1720 | switch (cmd) { | |
1721 | case SXIO_SET_BOARD: | |
15b611f6 | 1722 | sx_dprintk(SX_DEBUG_FIRMWARE, "set board to %ld\n", arg); |
11af7478 | 1723 | rc = -EIO; |
15b611f6 | 1724 | if (arg >= SX_NBOARDS) |
11af7478 | 1725 | break; |
15b611f6 JS |
1726 | sx_dprintk(SX_DEBUG_FIRMWARE, "not out of range\n"); |
1727 | if (!(boards[arg].flags & SX_BOARD_PRESENT)) | |
11af7478 | 1728 | break; |
15b611f6 | 1729 | sx_dprintk(SX_DEBUG_FIRMWARE, ".. and present!\n"); |
1da177e4 | 1730 | board = &boards[arg]; |
11af7478 AC |
1731 | rc = 0; |
1732 | /* FIXME: And this does ... nothing?? */ | |
1da177e4 LT |
1733 | break; |
1734 | case SXIO_GET_TYPE: | |
15b611f6 JS |
1735 | rc = -ENOENT; /* If we manage to miss one, return error. */ |
1736 | if (IS_SX_BOARD(board)) | |
1737 | rc = SX_TYPE_SX; | |
1738 | if (IS_CF_BOARD(board)) | |
1739 | rc = SX_TYPE_CF; | |
1740 | if (IS_SI_BOARD(board)) | |
1741 | rc = SX_TYPE_SI; | |
1742 | if (IS_SI1_BOARD(board)) | |
1743 | rc = SX_TYPE_SI; | |
1744 | if (IS_EISA_BOARD(board)) | |
1745 | rc = SX_TYPE_SI; | |
11af7478 | 1746 | sx_dprintk(SX_DEBUG_FIRMWARE, "returning type= %ld\n", rc); |
1da177e4 LT |
1747 | break; |
1748 | case SXIO_DO_RAMTEST: | |
9b6d2510 | 1749 | if (sx_initialized) { /* Already initialized: better not ramtest the board. */ |
736d5453 DC |
1750 | rc = -EPERM; |
1751 | break; | |
9b6d2510 | 1752 | } |
15b611f6 JS |
1753 | if (IS_SX_BOARD(board)) { |
1754 | rc = do_memtest(board, 0, 0x7000); | |
1755 | if (!rc) | |
1756 | rc = do_memtest(board, 0, 0x7000); | |
1757 | /*if (!rc) rc = do_memtest_w (board, 0, 0x7000); */ | |
1da177e4 | 1758 | } else { |
15b611f6 | 1759 | rc = do_memtest(board, 0, 0x7ff8); |
1da177e4 LT |
1760 | /* if (!rc) rc = do_memtest_w (board, 0, 0x7ff8); */ |
1761 | } | |
11af7478 AC |
1762 | sx_dprintk(SX_DEBUG_FIRMWARE, |
1763 | "returning memtest result= %ld\n", rc); | |
1da177e4 LT |
1764 | break; |
1765 | case SXIO_DOWNLOAD: | |
11af7478 AC |
1766 | if (sx_initialized) {/* Already initialized */ |
1767 | rc = -EEXIST; | |
1768 | break; | |
1769 | } | |
1770 | if (!sx_reset(board)) { | |
1771 | rc = -EIO; | |
1772 | break; | |
1773 | } | |
15b611f6 JS |
1774 | sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); |
1775 | ||
1776 | tmp = kmalloc(SX_CHUNK_SIZE, GFP_USER); | |
11af7478 AC |
1777 | if (!tmp) { |
1778 | rc = -ENOMEM; | |
1779 | break; | |
1780 | } | |
1781 | /* FIXME: check returns */ | |
15b611f6 JS |
1782 | get_user(nbytes, descr++); |
1783 | get_user(offset, descr++); | |
1784 | get_user(data, descr++); | |
1da177e4 | 1785 | while (nbytes && data) { |
15b611f6 JS |
1786 | for (i = 0; i < nbytes; i += SX_CHUNK_SIZE) { |
1787 | if (copy_from_user(tmp, (char __user *)data + i, | |
1788 | (i + SX_CHUNK_SIZE > nbytes) ? | |
1789 | nbytes - i : SX_CHUNK_SIZE)) { | |
1790 | kfree(tmp); | |
11af7478 | 1791 | rc = -EFAULT; |
b28fe28f | 1792 | goto out; |
1da177e4 | 1793 | } |
15b611f6 JS |
1794 | memcpy_toio(board->base2 + offset + i, tmp, |
1795 | (i + SX_CHUNK_SIZE > nbytes) ? | |
1796 | nbytes - i : SX_CHUNK_SIZE); | |
1da177e4 LT |
1797 | } |
1798 | ||
15b611f6 JS |
1799 | get_user(nbytes, descr++); |
1800 | get_user(offset, descr++); | |
1801 | get_user(data, descr++); | |
1da177e4 | 1802 | } |
15b611f6 JS |
1803 | kfree(tmp); |
1804 | sx_nports += sx_init_board(board); | |
1da177e4 LT |
1805 | rc = sx_nports; |
1806 | break; | |
1807 | case SXIO_INIT: | |
11af7478 AC |
1808 | if (sx_initialized) { /* Already initialized */ |
1809 | rc = -EEXIST; | |
1810 | break; | |
1811 | } | |
1da177e4 | 1812 | /* This is not allowed until all boards are initialized... */ |
15b611f6 JS |
1813 | for (i = 0; i < SX_NBOARDS; i++) { |
1814 | if ((boards[i].flags & SX_BOARD_PRESENT) && | |
11af7478 AC |
1815 | !(boards[i].flags & SX_BOARD_INITIALIZED)) { |
1816 | rc = -EIO; | |
1817 | break; | |
1818 | } | |
1da177e4 | 1819 | } |
15b611f6 JS |
1820 | for (i = 0; i < SX_NBOARDS; i++) |
1821 | if (!(boards[i].flags & SX_BOARD_PRESENT)) | |
1822 | break; | |
1823 | ||
1824 | sx_dprintk(SX_DEBUG_FIRMWARE, "initing portstructs, %d boards, " | |
1825 | "%d channels, first board: %d ports\n", | |
1826 | i, sx_nports, boards[0].nports); | |
1827 | rc = sx_init_portstructs(i, sx_nports); | |
1828 | sx_init_drivers(); | |
1829 | if (rc >= 0) | |
1da177e4 LT |
1830 | sx_initialized++; |
1831 | break; | |
1832 | case SXIO_SETDEBUG: | |
1833 | sx_debug = arg; | |
1834 | break; | |
1835 | case SXIO_GETDEBUG: | |
1836 | rc = sx_debug; | |
1837 | break; | |
1838 | case SXIO_GETGSDEBUG: | |
1839 | case SXIO_SETGSDEBUG: | |
1840 | rc = -EINVAL; | |
1841 | break; | |
1842 | case SXIO_GETNPORTS: | |
1843 | rc = sx_nports; | |
1844 | break; | |
1845 | default: | |
11af7478 | 1846 | rc = -ENOTTY; |
1da177e4 LT |
1847 | break; |
1848 | } | |
736d5453 | 1849 | out: |
11af7478 | 1850 | unlock_kernel(); |
15b611f6 | 1851 | func_exit(); |
1da177e4 LT |
1852 | return rc; |
1853 | } | |
1854 | ||
9e98966c | 1855 | static int sx_break(struct tty_struct *tty, int flag) |
1da177e4 LT |
1856 | { |
1857 | struct sx_port *port = tty->driver_data; | |
1858 | int rv; | |
1859 | ||
15b611f6 | 1860 | func_enter(); |
341339e7 | 1861 | lock_kernel(); |
1da177e4 | 1862 | |
15b611f6 JS |
1863 | if (flag) |
1864 | rv = sx_send_command(port, HS_START, -1, HS_IDLE_BREAK); | |
1865 | else | |
1866 | rv = sx_send_command(port, HS_STOP, -1, HS_IDLE_OPEN); | |
1867 | if (rv != 1) | |
1868 | printk(KERN_ERR "sx: couldn't send break (%x).\n", | |
1869 | read_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat))); | |
341339e7 | 1870 | unlock_kernel(); |
15b611f6 | 1871 | func_exit(); |
9e98966c | 1872 | return 0; |
1da177e4 LT |
1873 | } |
1874 | ||
1da177e4 LT |
1875 | static int sx_tiocmget(struct tty_struct *tty, struct file *file) |
1876 | { | |
1877 | struct sx_port *port = tty->driver_data; | |
1878 | return sx_getsignals(port); | |
1879 | } | |
1880 | ||
1881 | static int sx_tiocmset(struct tty_struct *tty, struct file *file, | |
15b611f6 | 1882 | unsigned int set, unsigned int clear) |
1da177e4 LT |
1883 | { |
1884 | struct sx_port *port = tty->driver_data; | |
1885 | int rts = -1, dtr = -1; | |
1886 | ||
1887 | if (set & TIOCM_RTS) | |
1888 | rts = 1; | |
1889 | if (set & TIOCM_DTR) | |
1890 | dtr = 1; | |
1891 | if (clear & TIOCM_RTS) | |
1892 | rts = 0; | |
1893 | if (clear & TIOCM_DTR) | |
1894 | dtr = 0; | |
1895 | ||
1896 | sx_setsignals(port, dtr, rts); | |
1897 | sx_reconfigure_port(port); | |
1898 | return 0; | |
1899 | } | |
1900 | ||
15b611f6 JS |
1901 | static int sx_ioctl(struct tty_struct *tty, struct file *filp, |
1902 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
1903 | { |
1904 | int rc; | |
1905 | struct sx_port *port = tty->driver_data; | |
1906 | void __user *argp = (void __user *)arg; | |
1da177e4 LT |
1907 | |
1908 | /* func_enter2(); */ | |
1909 | ||
1910 | rc = 0; | |
341339e7 | 1911 | lock_kernel(); |
1da177e4 | 1912 | switch (cmd) { |
1da177e4 LT |
1913 | case TIOCGSERIAL: |
1914 | rc = gs_getserial(&port->gs, argp); | |
1915 | break; | |
1916 | case TIOCSSERIAL: | |
1917 | rc = gs_setserial(&port->gs, argp); | |
1918 | break; | |
1919 | default: | |
1920 | rc = -ENOIOCTLCMD; | |
1921 | break; | |
1922 | } | |
341339e7 | 1923 | unlock_kernel(); |
1da177e4 LT |
1924 | |
1925 | /* func_exit(); */ | |
1926 | return rc; | |
1927 | } | |
1928 | ||
1da177e4 LT |
1929 | /* The throttle/unthrottle scheme for the Specialix card is different |
1930 | * from other drivers and deserves some explanation. | |
1931 | * The Specialix hardware takes care of XON/XOFF | |
1932 | * and CTS/RTS flow control itself. This means that all we have to | |
1933 | * do when signalled by the upper tty layer to throttle/unthrottle is | |
1934 | * to make a note of it here. When we come to read characters from the | |
1935 | * rx buffers on the card (sx_receive_chars()) we look to see if the | |
1936 | * upper layer can accept more (as noted here in sx_rx_throt[]). | |
1937 | * If it can't we simply don't remove chars from the cards buffer. | |
1938 | * When the tty layer can accept chars, we again note that here and when | |
1939 | * sx_receive_chars() is called it will remove them from the cards buffer. | |
1940 | * The card will notice that a ports buffer has drained below some low | |
1941 | * water mark and will unflow control the line itself, using whatever | |
1942 | * flow control scheme is in use for that port. -- Simon Allen | |
1943 | */ | |
1944 | ||
15b611f6 | 1945 | static void sx_throttle(struct tty_struct *tty) |
1da177e4 | 1946 | { |
c9f19e96 | 1947 | struct sx_port *port = tty->driver_data; |
1da177e4 LT |
1948 | |
1949 | func_enter2(); | |
1950 | /* If the port is using any type of input flow | |
1951 | * control then throttle the port. | |
1952 | */ | |
15b611f6 | 1953 | if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) { |
b5391e29 | 1954 | port->gs.port.flags |= SX_RX_THROTTLE; |
1da177e4 LT |
1955 | } |
1956 | func_exit(); | |
1957 | } | |
1958 | ||
15b611f6 | 1959 | static void sx_unthrottle(struct tty_struct *tty) |
1da177e4 | 1960 | { |
c9f19e96 | 1961 | struct sx_port *port = tty->driver_data; |
1da177e4 LT |
1962 | |
1963 | func_enter2(); | |
1964 | /* Always unthrottle even if flow control is not enabled on | |
1965 | * this port in case we disabled flow control while the port | |
1966 | * was throttled | |
1967 | */ | |
b5391e29 | 1968 | port->gs.port.flags &= ~SX_RX_THROTTLE; |
1da177e4 LT |
1969 | func_exit(); |
1970 | return; | |
1971 | } | |
1972 | ||
1da177e4 LT |
1973 | /* ********************************************************************** * |
1974 | * Here are the initialization routines. * | |
1975 | * ********************************************************************** */ | |
1976 | ||
15b611f6 | 1977 | static int sx_init_board(struct sx_board *board) |
1da177e4 LT |
1978 | { |
1979 | int addr; | |
1980 | int chans; | |
1981 | int type; | |
1982 | ||
1983 | func_enter(); | |
1984 | ||
1985 | /* This is preceded by downloading the download code. */ | |
1986 | ||
1987 | board->flags |= SX_BOARD_INITIALIZED; | |
1988 | ||
15b611f6 | 1989 | if (read_sx_byte(board, 0)) |
1da177e4 | 1990 | /* CF boards may need this. */ |
15b611f6 | 1991 | write_sx_byte(board, 0, 0); |
1da177e4 LT |
1992 | |
1993 | /* This resets the processor again, to make sure it didn't do any | |
1994 | foolish things while we were downloading the image */ | |
15b611f6 | 1995 | if (!sx_reset(board)) |
1da177e4 LT |
1996 | return 0; |
1997 | ||
15b611f6 JS |
1998 | sx_start_board(board); |
1999 | udelay(10); | |
2000 | if (!sx_busy_wait_neq(board, 0, 0xff, 0)) { | |
2001 | printk(KERN_ERR "sx: Ooops. Board won't initialize.\n"); | |
1da177e4 LT |
2002 | return 0; |
2003 | } | |
2004 | ||
2005 | /* Ok. So now the processor on the card is running. It gathered | |
2006 | some info for us... */ | |
15b611f6 JS |
2007 | sx_dprintk(SX_DEBUG_INIT, "The sxcard structure:\n"); |
2008 | if (sx_debug & SX_DEBUG_INIT) | |
2009 | my_hd_io(board->base, 0x10); | |
2010 | sx_dprintk(SX_DEBUG_INIT, "the first sx_module structure:\n"); | |
2011 | if (sx_debug & SX_DEBUG_INIT) | |
2012 | my_hd_io(board->base + 0x80, 0x30); | |
2013 | ||
2014 | sx_dprintk(SX_DEBUG_INIT, "init_status: %x, %dk memory, firmware " | |
2015 | "V%x.%02x,\n", | |
2016 | read_sx_byte(board, 0), read_sx_byte(board, 1), | |
2017 | read_sx_byte(board, 5), read_sx_byte(board, 4)); | |
2018 | ||
2019 | if (read_sx_byte(board, 0) == 0xff) { | |
2020 | printk(KERN_INFO "sx: No modules found. Sorry.\n"); | |
1da177e4 LT |
2021 | board->nports = 0; |
2022 | return 0; | |
2023 | } | |
2024 | ||
2025 | chans = 0; | |
2026 | ||
2027 | if (IS_SX_BOARD(board)) { | |
15b611f6 | 2028 | sx_write_board_word(board, cc_int_count, sx_maxints); |
1da177e4 LT |
2029 | } else { |
2030 | if (sx_maxints) | |
15b611f6 JS |
2031 | sx_write_board_word(board, cc_int_count, |
2032 | SI_PROCESSOR_CLOCK / 8 / sx_maxints); | |
1da177e4 LT |
2033 | } |
2034 | ||
2035 | /* grab the first module type... */ | |
15b611f6 JS |
2036 | /* board->ta_type = mod_compat_type (read_sx_byte (board, 0x80 + 0x08)); */ |
2037 | board->ta_type = mod_compat_type(sx_read_module_byte(board, 0x80, | |
2038 | mc_chip)); | |
1da177e4 LT |
2039 | |
2040 | /* XXX byteorder */ | |
15b611f6 JS |
2041 | for (addr = 0x80; addr != 0; addr = read_sx_word(board, addr) & 0x7fff){ |
2042 | type = sx_read_module_byte(board, addr, mc_chip); | |
2043 | sx_dprintk(SX_DEBUG_INIT, "Module at %x: %d channels\n", | |
2044 | addr, read_sx_byte(board, addr + 2)); | |
2045 | ||
2046 | chans += sx_read_module_byte(board, addr, mc_type); | |
2047 | ||
2048 | sx_dprintk(SX_DEBUG_INIT, "module is an %s, which has %s/%s " | |
2049 | "panels\n", | |
2050 | mod_type_s(type), | |
2051 | pan_type_s(sx_read_module_byte(board, addr, | |
2052 | mc_mods) & 0xf), | |
2053 | pan_type_s(sx_read_module_byte(board, addr, | |
2054 | mc_mods) >> 4)); | |
2055 | ||
2056 | sx_dprintk(SX_DEBUG_INIT, "CD1400 versions: %x/%x, ASIC " | |
2057 | "version: %x\n", | |
2058 | sx_read_module_byte(board, addr, mc_rev1), | |
2059 | sx_read_module_byte(board, addr, mc_rev2), | |
2060 | sx_read_module_byte(board, addr, mc_mtaasic_rev)); | |
1da177e4 LT |
2061 | |
2062 | /* The following combinations are illegal: It should theoretically | |
2063 | work, but timing problems make the bus HANG. */ | |
2064 | ||
15b611f6 JS |
2065 | if (mod_compat_type(type) != board->ta_type) { |
2066 | printk(KERN_ERR "sx: This is an invalid " | |
2067 | "configuration.\nDon't mix TA/MTA/SXDC on the " | |
2068 | "same hostadapter.\n"); | |
2069 | chans = 0; | |
1da177e4 LT |
2070 | break; |
2071 | } | |
15b611f6 JS |
2072 | if ((IS_EISA_BOARD(board) || |
2073 | IS_SI_BOARD(board)) && | |
2074 | (mod_compat_type(type) == 4)) { | |
2075 | printk(KERN_ERR "sx: This is an invalid " | |
2076 | "configuration.\nDon't use SXDCs on an SI/XIO " | |
2077 | "adapter.\n"); | |
2078 | chans = 0; | |
1da177e4 LT |
2079 | break; |
2080 | } | |
15b611f6 | 2081 | #if 0 /* Problem fixed: firmware 3.05 */ |
1da177e4 LT |
2082 | if (IS_SX_BOARD(board) && (type == TA8)) { |
2083 | /* There are some issues with the firmware and the DCD/RTS | |
2084 | lines. It might work if you tie them together or something. | |
15b611f6 | 2085 | It might also work if you get a newer sx_firmware. Therefore |
1da177e4 | 2086 | this is just a warning. */ |
15b611f6 JS |
2087 | printk(KERN_WARNING |
2088 | "sx: The SX host doesn't work too well " | |
2089 | "with the TA8 adapters.\nSpecialix is working on it.\n"); | |
1da177e4 LT |
2090 | } |
2091 | #endif | |
2092 | } | |
2093 | ||
2094 | if (chans) { | |
15b611f6 | 2095 | if (board->irq > 0) { |
1da177e4 | 2096 | /* fixed irq, probably PCI */ |
15b611f6 JS |
2097 | if (sx_irqmask & (1 << board->irq)) { /* may we use this irq? */ |
2098 | if (request_irq(board->irq, sx_interrupt, | |
2099 | IRQF_SHARED | IRQF_DISABLED, | |
2100 | "sx", board)) { | |
2101 | printk(KERN_ERR "sx: Cannot allocate " | |
2102 | "irq %d.\n", board->irq); | |
1da177e4 LT |
2103 | board->irq = 0; |
2104 | } | |
2105 | } else | |
2106 | board->irq = 0; | |
15b611f6 | 2107 | } else if (board->irq < 0 && sx_irqmask) { |
1da177e4 LT |
2108 | /* auto-allocate irq */ |
2109 | int irqnr; | |
15b611f6 JS |
2110 | int irqmask = sx_irqmask & (IS_SX_BOARD(board) ? |
2111 | SX_ISA_IRQ_MASK : SI2_ISA_IRQ_MASK); | |
2112 | for (irqnr = 15; irqnr > 0; irqnr--) | |
2113 | if (irqmask & (1 << irqnr)) | |
2114 | if (!request_irq(irqnr, sx_interrupt, | |
2115 | IRQF_SHARED | IRQF_DISABLED, | |
2116 | "sx", board)) | |
1da177e4 | 2117 | break; |
15b611f6 | 2118 | if (!irqnr) |
1da177e4 LT |
2119 | printk(KERN_ERR "sx: Cannot allocate IRQ.\n"); |
2120 | board->irq = irqnr; | |
2121 | } else | |
2122 | board->irq = 0; | |
2123 | ||
2124 | if (board->irq) { | |
2125 | /* Found a valid interrupt, start up interrupts! */ | |
15b611f6 JS |
2126 | sx_dprintk(SX_DEBUG_INIT, "Using irq %d.\n", |
2127 | board->irq); | |
2128 | sx_start_interrupts(board); | |
1da177e4 LT |
2129 | board->poll = sx_slowpoll; |
2130 | board->flags |= SX_IRQ_ALLOCATED; | |
2131 | } else { | |
2132 | /* no irq: setup board for polled operation */ | |
2133 | board->poll = sx_poll; | |
15b611f6 JS |
2134 | sx_dprintk(SX_DEBUG_INIT, "Using poll-interval %d.\n", |
2135 | board->poll); | |
1da177e4 LT |
2136 | } |
2137 | ||
15b611f6 JS |
2138 | /* The timer should be initialized anyway: That way we can |
2139 | safely del_timer it when the module is unloaded. */ | |
c9594643 | 2140 | setup_timer(&board->timer, sx_pollfunc, (unsigned long)board); |
1da177e4 | 2141 | |
c9594643 JS |
2142 | if (board->poll) |
2143 | mod_timer(&board->timer, jiffies + board->poll); | |
1da177e4 LT |
2144 | } else { |
2145 | board->irq = 0; | |
2146 | } | |
2147 | ||
2148 | board->nports = chans; | |
15b611f6 | 2149 | sx_dprintk(SX_DEBUG_INIT, "returning %d ports.", board->nports); |
1da177e4 LT |
2150 | |
2151 | func_exit(); | |
2152 | return chans; | |
2153 | } | |
2154 | ||
cda5265e | 2155 | static void __devinit printheader(void) |
1da177e4 LT |
2156 | { |
2157 | static int header_printed; | |
2158 | ||
2159 | if (!header_printed) { | |
15b611f6 JS |
2160 | printk(KERN_INFO "Specialix SX driver " |
2161 | "(C) 1998/1999 R.E.Wolff@BitWizard.nl\n"); | |
2162 | printk(KERN_INFO "sx: version " __stringify(SX_VERSION) "\n"); | |
1da177e4 LT |
2163 | header_printed = 1; |
2164 | } | |
2165 | } | |
2166 | ||
15b611f6 | 2167 | static int __devinit probe_sx(struct sx_board *board) |
1da177e4 LT |
2168 | { |
2169 | struct vpd_prom vpdp; | |
2170 | char *p; | |
2171 | int i; | |
2172 | ||
2173 | func_enter(); | |
2174 | ||
15b611f6 JS |
2175 | if (!IS_CF_BOARD(board)) { |
2176 | sx_dprintk(SX_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", | |
2177 | board->base + SX_VPD_ROM); | |
1da177e4 LT |
2178 | |
2179 | if (sx_debug & SX_DEBUG_PROBE) | |
2180 | my_hd_io(board->base + SX_VPD_ROM, 0x40); | |
2181 | ||
15b611f6 JS |
2182 | p = (char *)&vpdp; |
2183 | for (i = 0; i < sizeof(struct vpd_prom); i++) | |
2184 | *p++ = read_sx_byte(board, SX_VPD_ROM + i * 2); | |
1da177e4 LT |
2185 | |
2186 | if (sx_debug & SX_DEBUG_PROBE) | |
15b611f6 | 2187 | my_hd(&vpdp, 0x20); |
1da177e4 | 2188 | |
15b611f6 | 2189 | sx_dprintk(SX_DEBUG_PROBE, "checking identifier...\n"); |
1da177e4 | 2190 | |
15b611f6 JS |
2191 | if (strncmp(vpdp.identifier, SX_VPD_IDENT_STRING, 16) != 0) { |
2192 | sx_dprintk(SX_DEBUG_PROBE, "Got non-SX identifier: " | |
2193 | "'%s'\n", vpdp.identifier); | |
1da177e4 LT |
2194 | return 0; |
2195 | } | |
2196 | } | |
2197 | ||
15b611f6 | 2198 | printheader(); |
1da177e4 | 2199 | |
15b611f6 JS |
2200 | if (!IS_CF_BOARD(board)) { |
2201 | printk(KERN_DEBUG "sx: Found an SX board at %lx\n", | |
2202 | board->hw_base); | |
2203 | printk(KERN_DEBUG "sx: hw_rev: %d, assembly level: %d, " | |
2204 | "uniq ID:%08x, ", | |
2205 | vpdp.hwrev, vpdp.hwass, vpdp.uniqid); | |
2206 | printk("Manufactured: %d/%d\n", 1970 + vpdp.myear, vpdp.mweek); | |
1da177e4 | 2207 | |
15b611f6 JS |
2208 | if ((((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != |
2209 | SX_PCI_UNIQUEID1) && (((vpdp.uniqid >> 24) & | |
2210 | SX_UNIQUEID_MASK) != SX_ISA_UNIQUEID1)) { | |
2211 | /* This might be a bit harsh. This was the primary | |
2212 | reason the SX/ISA card didn't work at first... */ | |
2213 | printk(KERN_ERR "sx: Hmm. Not an SX/PCI or SX/ISA " | |
2214 | "card. Sorry: giving up.\n"); | |
1da177e4 LT |
2215 | return (0); |
2216 | } | |
2217 | ||
15b611f6 JS |
2218 | if (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) == |
2219 | SX_ISA_UNIQUEID1) { | |
1da177e4 | 2220 | if (((unsigned long)board->hw_base) & 0x8000) { |
15b611f6 JS |
2221 | printk(KERN_WARNING "sx: Warning: There may be " |
2222 | "hardware problems with the card at " | |
2223 | "%lx.\n", board->hw_base); | |
2224 | printk(KERN_WARNING "sx: Read sx.txt for more " | |
2225 | "info.\n"); | |
1da177e4 LT |
2226 | } |
2227 | } | |
2228 | } | |
2229 | ||
2230 | board->nports = -1; | |
2231 | ||
2232 | /* This resets the processor, and keeps it off the bus. */ | |
15b611f6 | 2233 | if (!sx_reset(board)) |
1da177e4 | 2234 | return 0; |
15b611f6 | 2235 | sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); |
1da177e4 | 2236 | |
1da177e4 LT |
2237 | func_exit(); |
2238 | return 1; | |
2239 | } | |
2240 | ||
927a6f9d | 2241 | #if defined(CONFIG_ISA) || defined(CONFIG_EISA) |
1da177e4 LT |
2242 | |
2243 | /* Specialix probes for this card at 32k increments from 640k to 16M. | |
2244 | I consider machines with less than 16M unlikely nowadays, so I'm | |
2245 | not probing above 1Mb. Also, 0xa0000, 0xb0000, are taken by the VGA | |
2246 | card. 0xe0000 and 0xf0000 are taken by the BIOS. That only leaves | |
2247 | 0xc0000, 0xc8000, 0xd0000 and 0xd8000 . */ | |
2248 | ||
15b611f6 | 2249 | static int __devinit probe_si(struct sx_board *board) |
1da177e4 LT |
2250 | { |
2251 | int i; | |
2252 | ||
2253 | func_enter(); | |
15b611f6 JS |
2254 | sx_dprintk(SX_DEBUG_PROBE, "Going to verify SI signature hw %lx at " |
2255 | "%p.\n", board->hw_base, board->base + SI2_ISA_ID_BASE); | |
1da177e4 LT |
2256 | |
2257 | if (sx_debug & SX_DEBUG_PROBE) | |
2258 | my_hd_io(board->base + SI2_ISA_ID_BASE, 0x8); | |
2259 | ||
2260 | if (!IS_EISA_BOARD(board)) { | |
15b611f6 JS |
2261 | if (IS_SI1_BOARD(board)) { |
2262 | for (i = 0; i < 8; i++) { | |
2263 | write_sx_byte(board, SI2_ISA_ID_BASE + 7 - i,i); | |
2264 | } | |
1da177e4 | 2265 | } |
15b611f6 JS |
2266 | for (i = 0; i < 8; i++) { |
2267 | if ((read_sx_byte(board, SI2_ISA_ID_BASE + 7 - i) & 7) | |
2268 | != i) { | |
2269 | func_exit(); | |
1da177e4 LT |
2270 | return 0; |
2271 | } | |
2272 | } | |
2273 | } | |
2274 | ||
2275 | /* Now we're pretty much convinced that there is an SI board here, | |
2276 | but to prevent trouble, we'd better double check that we don't | |
2277 | have an SI1 board when we're probing for an SI2 board.... */ | |
2278 | ||
15b611f6 JS |
2279 | write_sx_byte(board, SI2_ISA_ID_BASE, 0x10); |
2280 | if (IS_SI1_BOARD(board)) { | |
1da177e4 LT |
2281 | /* This should be an SI1 board, which has this |
2282 | location writable... */ | |
15b611f6 JS |
2283 | if (read_sx_byte(board, SI2_ISA_ID_BASE) != 0x10) { |
2284 | func_exit(); | |
2285 | return 0; | |
04a3d311 | 2286 | } |
1da177e4 LT |
2287 | } else { |
2288 | /* This should be an SI2 board, which has the bottom | |
2289 | 3 bits non-writable... */ | |
15b611f6 JS |
2290 | if (read_sx_byte(board, SI2_ISA_ID_BASE) == 0x10) { |
2291 | func_exit(); | |
2292 | return 0; | |
04a3d311 | 2293 | } |
1da177e4 LT |
2294 | } |
2295 | ||
2296 | /* Now we're pretty much convinced that there is an SI board here, | |
2297 | but to prevent trouble, we'd better double check that we don't | |
2298 | have an SI1 board when we're probing for an SI2 board.... */ | |
2299 | ||
15b611f6 JS |
2300 | write_sx_byte(board, SI2_ISA_ID_BASE, 0x10); |
2301 | if (IS_SI1_BOARD(board)) { | |
1da177e4 LT |
2302 | /* This should be an SI1 board, which has this |
2303 | location writable... */ | |
15b611f6 | 2304 | if (read_sx_byte(board, SI2_ISA_ID_BASE) != 0x10) { |
1da177e4 | 2305 | func_exit(); |
15b611f6 | 2306 | return 0; |
04a3d311 | 2307 | } |
1da177e4 LT |
2308 | } else { |
2309 | /* This should be an SI2 board, which has the bottom | |
2310 | 3 bits non-writable... */ | |
15b611f6 JS |
2311 | if (read_sx_byte(board, SI2_ISA_ID_BASE) == 0x10) { |
2312 | func_exit(); | |
2313 | return 0; | |
04a3d311 | 2314 | } |
1da177e4 LT |
2315 | } |
2316 | ||
15b611f6 | 2317 | printheader(); |
1da177e4 | 2318 | |
15b611f6 | 2319 | printk(KERN_DEBUG "sx: Found an SI board at %lx\n", board->hw_base); |
1da177e4 | 2320 | /* Compared to the SX boards, it is a complete guess as to what |
15b611f6 | 2321 | this card is up to... */ |
1da177e4 LT |
2322 | |
2323 | board->nports = -1; | |
2324 | ||
2325 | /* This resets the processor, and keeps it off the bus. */ | |
15b611f6 | 2326 | if (!sx_reset(board)) |
1da177e4 | 2327 | return 0; |
15b611f6 | 2328 | sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); |
1da177e4 | 2329 | |
1da177e4 LT |
2330 | func_exit(); |
2331 | return 1; | |
2332 | } | |
927a6f9d | 2333 | #endif |
1da177e4 | 2334 | |
b68e31d0 | 2335 | static const struct tty_operations sx_ops = { |
1da177e4 | 2336 | .break_ctl = sx_break, |
15b611f6 | 2337 | .open = sx_open, |
1da177e4 LT |
2338 | .close = gs_close, |
2339 | .write = gs_write, | |
2340 | .put_char = gs_put_char, | |
2341 | .flush_chars = gs_flush_chars, | |
2342 | .write_room = gs_write_room, | |
2343 | .chars_in_buffer = gs_chars_in_buffer, | |
2344 | .flush_buffer = gs_flush_buffer, | |
2345 | .ioctl = sx_ioctl, | |
2346 | .throttle = sx_throttle, | |
2347 | .unthrottle = sx_unthrottle, | |
2348 | .set_termios = gs_set_termios, | |
2349 | .stop = gs_stop, | |
2350 | .start = gs_start, | |
2351 | .hangup = gs_hangup, | |
2352 | .tiocmget = sx_tiocmget, | |
2353 | .tiocmset = sx_tiocmset, | |
2354 | }; | |
2355 | ||
31f35939 AC |
2356 | static const struct tty_port_operations sx_port_ops = { |
2357 | .carrier_raised = sx_carrier_raised, | |
2358 | }; | |
2359 | ||
1da177e4 LT |
2360 | static int sx_init_drivers(void) |
2361 | { | |
2362 | int error; | |
2363 | ||
2364 | func_enter(); | |
2365 | ||
2366 | sx_driver = alloc_tty_driver(sx_nports); | |
2367 | if (!sx_driver) | |
2368 | return 1; | |
2369 | sx_driver->owner = THIS_MODULE; | |
2370 | sx_driver->driver_name = "specialix_sx"; | |
2371 | sx_driver->name = "ttyX"; | |
2372 | sx_driver->major = SX_NORMAL_MAJOR; | |
2373 | sx_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
2374 | sx_driver->subtype = SERIAL_TYPE_NORMAL; | |
2375 | sx_driver->init_termios = tty_std_termios; | |
15b611f6 | 2376 | sx_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
606d099c AC |
2377 | sx_driver->init_termios.c_ispeed = 9600; |
2378 | sx_driver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
2379 | sx_driver->flags = TTY_DRIVER_REAL_RAW; |
2380 | tty_set_operations(sx_driver, &sx_ops); | |
2381 | ||
2382 | if ((error = tty_register_driver(sx_driver))) { | |
2383 | put_tty_driver(sx_driver); | |
2384 | printk(KERN_ERR "sx: Couldn't register sx driver, error = %d\n", | |
15b611f6 | 2385 | error); |
1da177e4 LT |
2386 | return 1; |
2387 | } | |
2388 | func_exit(); | |
2389 | return 0; | |
2390 | } | |
2391 | ||
15b611f6 | 2392 | static int sx_init_portstructs(int nboards, int nports) |
1da177e4 LT |
2393 | { |
2394 | struct sx_board *board; | |
2395 | struct sx_port *port; | |
2396 | int i, j; | |
2397 | int addr, chans; | |
2398 | int portno; | |
2399 | ||
2400 | func_enter(); | |
2401 | ||
2402 | /* Many drivers statically allocate the maximum number of ports | |
15b611f6 JS |
2403 | There is no reason not to allocate them dynamically. |
2404 | Is there? -- REW */ | |
4a7cb69b | 2405 | sx_ports = kcalloc(nports, sizeof(struct sx_port), GFP_KERNEL); |
1da177e4 LT |
2406 | if (!sx_ports) |
2407 | return -ENOMEM; | |
2408 | ||
2409 | port = sx_ports; | |
2410 | for (i = 0; i < nboards; i++) { | |
2411 | board = &boards[i]; | |
2412 | board->ports = port; | |
15b611f6 JS |
2413 | for (j = 0; j < boards[i].nports; j++) { |
2414 | sx_dprintk(SX_DEBUG_INIT, "initing port %d\n", j); | |
44b7d1b3 | 2415 | tty_port_init(&port->gs.port); |
31f35939 | 2416 | port->gs.port.ops = &sx_port_ops; |
1da177e4 | 2417 | port->gs.magic = SX_MAGIC; |
15b611f6 | 2418 | port->gs.close_delay = HZ / 2; |
1da177e4 LT |
2419 | port->gs.closing_wait = 30 * HZ; |
2420 | port->board = board; | |
2421 | port->gs.rd = &sx_real_driver; | |
2422 | #ifdef NEW_WRITE_LOCKING | |
81861d78 | 2423 | port->gs.port_write_mutex = MUTEX; |
1da177e4 | 2424 | #endif |
34af946a | 2425 | spin_lock_init(&port->gs.driver_lock); |
1da177e4 LT |
2426 | /* |
2427 | * Initializing wait queue | |
2428 | */ | |
1da177e4 LT |
2429 | port++; |
2430 | } | |
2431 | } | |
2432 | ||
2433 | port = sx_ports; | |
2434 | portno = 0; | |
2435 | for (i = 0; i < nboards; i++) { | |
2436 | board = &boards[i]; | |
2437 | board->port_base = portno; | |
2438 | /* Possibly the configuration was rejected. */ | |
15b611f6 JS |
2439 | sx_dprintk(SX_DEBUG_PROBE, "Board has %d channels\n", |
2440 | board->nports); | |
2441 | if (board->nports <= 0) | |
2442 | continue; | |
1da177e4 | 2443 | /* XXX byteorder ?? */ |
15b611f6 JS |
2444 | for (addr = 0x80; addr != 0; |
2445 | addr = read_sx_word(board, addr) & 0x7fff) { | |
2446 | chans = sx_read_module_byte(board, addr, mc_type); | |
2447 | sx_dprintk(SX_DEBUG_PROBE, "Module at %x: %d " | |
2448 | "channels\n", addr, chans); | |
2449 | sx_dprintk(SX_DEBUG_PROBE, "Port at"); | |
2450 | for (j = 0; j < chans; j++) { | |
2451 | /* The "sx-way" is the way it SHOULD be done. | |
2452 | That way in the future, the firmware may for | |
2453 | example pack the structures a bit more | |
2454 | efficient. Neil tells me it isn't going to | |
2455 | happen anytime soon though. */ | |
1da177e4 | 2456 | if (IS_SX_BOARD(board)) |
15b611f6 JS |
2457 | port->ch_base = sx_read_module_word( |
2458 | board, addr + j * 2, | |
2459 | mc_chan_pointer); | |
1da177e4 | 2460 | else |
15b611f6 | 2461 | port->ch_base = addr + 0x100 + 0x300 *j; |
1da177e4 | 2462 | |
15b611f6 JS |
2463 | sx_dprintk(SX_DEBUG_PROBE, " %x", |
2464 | port->ch_base); | |
1da177e4 LT |
2465 | port->line = portno++; |
2466 | port++; | |
2467 | } | |
15b611f6 | 2468 | sx_dprintk(SX_DEBUG_PROBE, "\n"); |
1da177e4 LT |
2469 | } |
2470 | /* This has to be done earlier. */ | |
2471 | /* board->flags |= SX_BOARD_INITIALIZED; */ | |
2472 | } | |
2473 | ||
2474 | func_exit(); | |
2475 | return 0; | |
2476 | } | |
2477 | ||
18f813ee JS |
2478 | static unsigned int sx_find_free_board(void) |
2479 | { | |
2480 | unsigned int i; | |
2481 | ||
15b611f6 | 2482 | for (i = 0; i < SX_NBOARDS; i++) |
18f813ee JS |
2483 | if (!(boards[i].flags & SX_BOARD_PRESENT)) |
2484 | break; | |
2485 | ||
2486 | return i; | |
2487 | } | |
2488 | ||
1da177e4 LT |
2489 | static void __exit sx_release_drivers(void) |
2490 | { | |
2491 | func_enter(); | |
2492 | tty_unregister_driver(sx_driver); | |
2493 | put_tty_driver(sx_driver); | |
2494 | func_exit(); | |
2495 | } | |
2496 | ||
39103494 JS |
2497 | static void __devexit sx_remove_card(struct sx_board *board, |
2498 | struct pci_dev *pdev) | |
18f813ee JS |
2499 | { |
2500 | if (board->flags & SX_BOARD_INITIALIZED) { | |
2501 | /* The board should stop messing with us. (actually I mean the | |
2502 | interrupt) */ | |
2503 | sx_reset(board); | |
2504 | if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED)) | |
2505 | free_irq(board->irq, board); | |
2506 | ||
2507 | /* It is safe/allowed to del_timer a non-active timer */ | |
2508 | del_timer(&board->timer); | |
30f4218f | 2509 | if (pdev) { |
3468a33e | 2510 | #ifdef CONFIG_PCI |
da1cfe1a | 2511 | iounmap(board->base2); |
30f4218f | 2512 | pci_release_region(pdev, IS_CF_BOARD(board) ? 3 : 2); |
3468a33e | 2513 | #endif |
30f4218f | 2514 | } else { |
39103494 | 2515 | iounmap(board->base); |
30f4218f JS |
2516 | release_region(board->hw_base, board->hw_len); |
2517 | } | |
18f813ee | 2518 | |
15b611f6 | 2519 | board->flags &= ~(SX_BOARD_INITIALIZED | SX_BOARD_PRESENT); |
18f813ee JS |
2520 | } |
2521 | } | |
2522 | ||
2523 | #ifdef CONFIG_EISA | |
2524 | ||
2525 | static int __devinit sx_eisa_probe(struct device *dev) | |
2526 | { | |
2527 | struct eisa_device *edev = to_eisa_device(dev); | |
2528 | struct sx_board *board; | |
2529 | unsigned long eisa_slot = edev->base_addr; | |
2530 | unsigned int i; | |
2531 | int retval = -EIO; | |
2532 | ||
42f6384f | 2533 | mutex_lock(&sx_boards_lock); |
18f813ee | 2534 | i = sx_find_free_board(); |
42f6384f JS |
2535 | if (i == SX_NBOARDS) { |
2536 | mutex_unlock(&sx_boards_lock); | |
18f813ee | 2537 | goto err; |
42f6384f JS |
2538 | } |
2539 | board = &boards[i]; | |
2540 | board->flags |= SX_BOARD_PRESENT; | |
2541 | mutex_unlock(&sx_boards_lock); | |
18f813ee JS |
2542 | |
2543 | dev_info(dev, "XIO : Signature found in EISA slot %lu, " | |
15b611f6 JS |
2544 | "Product %d Rev %d (REPORT THIS TO LKLM)\n", |
2545 | eisa_slot >> 12, | |
2546 | inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 2), | |
2547 | inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 3)); | |
18f813ee | 2548 | |
18f813ee JS |
2549 | board->eisa_base = eisa_slot; |
2550 | board->flags &= ~SX_BOARD_TYPE; | |
2551 | board->flags |= SI_EISA_BOARD; | |
2552 | ||
2553 | board->hw_base = ((inb(eisa_slot + 0xc01) << 8) + | |
15b611f6 | 2554 | inb(eisa_slot + 0xc00)) << 16; |
30f4218f JS |
2555 | board->hw_len = SI2_EISA_WINDOW_LEN; |
2556 | if (!request_region(board->hw_base, board->hw_len, "sx")) { | |
2557 | dev_err(dev, "can't request region\n"); | |
2558 | goto err_flag; | |
2559 | } | |
18f813ee | 2560 | board->base2 = |
24cb2335 | 2561 | board->base = ioremap_nocache(board->hw_base, SI2_EISA_WINDOW_LEN); |
30f4218f JS |
2562 | if (!board->base) { |
2563 | dev_err(dev, "can't remap memory\n"); | |
2564 | goto err_reg; | |
2565 | } | |
18f813ee JS |
2566 | |
2567 | sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base); | |
2568 | sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base); | |
2569 | board->irq = inb(eisa_slot + 0xc02) >> 4; | |
2570 | sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq); | |
2571 | ||
2572 | if (!probe_si(board)) | |
2573 | goto err_unmap; | |
2574 | ||
2575 | dev_set_drvdata(dev, board); | |
2576 | ||
2577 | return 0; | |
2578 | err_unmap: | |
2579 | iounmap(board->base); | |
30f4218f JS |
2580 | err_reg: |
2581 | release_region(board->hw_base, board->hw_len); | |
2582 | err_flag: | |
42f6384f | 2583 | board->flags &= ~SX_BOARD_PRESENT; |
18f813ee JS |
2584 | err: |
2585 | return retval; | |
2586 | } | |
2587 | ||
2588 | static int __devexit sx_eisa_remove(struct device *dev) | |
2589 | { | |
2590 | struct sx_board *board = dev_get_drvdata(dev); | |
2591 | ||
39103494 | 2592 | sx_remove_card(board, NULL); |
18f813ee JS |
2593 | |
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | static struct eisa_device_id sx_eisa_tbl[] = { | |
2598 | { "SLX" }, | |
2599 | { "" } | |
2600 | }; | |
15b611f6 | 2601 | |
18f813ee JS |
2602 | MODULE_DEVICE_TABLE(eisa, sx_eisa_tbl); |
2603 | ||
2604 | static struct eisa_driver sx_eisadriver = { | |
2605 | .id_table = sx_eisa_tbl, | |
2606 | .driver = { | |
2607 | .name = "sx", | |
2608 | .probe = sx_eisa_probe, | |
2609 | .remove = __devexit_p(sx_eisa_remove), | |
2610 | } | |
2611 | }; | |
2612 | ||
2613 | #endif | |
2614 | ||
3468a33e | 2615 | #ifdef CONFIG_PCI |
1da177e4 LT |
2616 | /******************************************************** |
2617 | * Setting bit 17 in the CNTRL register of the PLX 9050 * | |
2618 | * chip forces a retry on writes while a read is pending.* | |
2619 | * This is to prevent the card locking up on Intel Xeon * | |
2620 | * multiprocessor systems with the NX chipset. -- NV * | |
2621 | ********************************************************/ | |
2622 | ||
2623 | /* Newer cards are produced with this bit set from the configuration | |
2624 | EEprom. As the bit is read/write for the CPU, we can fix it here, | |
2625 | if we detect that it isn't set correctly. -- REW */ | |
2626 | ||
cda5265e | 2627 | static void __devinit fix_sx_pci(struct pci_dev *pdev, struct sx_board *board) |
1da177e4 LT |
2628 | { |
2629 | unsigned int hwbase; | |
2630 | void __iomem *rebase; | |
2631 | unsigned int t; | |
2632 | ||
15b611f6 JS |
2633 | #define CNTRL_REG_OFFSET 0x50 |
2634 | #define CNTRL_REG_GOODVALUE 0x18260000 | |
1da177e4 LT |
2635 | |
2636 | pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); | |
2637 | hwbase &= PCI_BASE_ADDRESS_MEM_MASK; | |
24cb2335 | 2638 | rebase = ioremap_nocache(hwbase, 0x80); |
15b611f6 | 2639 | t = readl(rebase + CNTRL_REG_OFFSET); |
1da177e4 | 2640 | if (t != CNTRL_REG_GOODVALUE) { |
15b611f6 JS |
2641 | printk(KERN_DEBUG "sx: performing cntrl reg fix: %08x -> " |
2642 | "%08x\n", t, CNTRL_REG_GOODVALUE); | |
2643 | writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); | |
1da177e4 LT |
2644 | } |
2645 | iounmap(rebase); | |
2646 | } | |
3468a33e | 2647 | #endif |
1da177e4 | 2648 | |
5572e103 | 2649 | static int __devinit sx_pci_probe(struct pci_dev *pdev, |
15b611f6 | 2650 | const struct pci_device_id *ent) |
5572e103 | 2651 | { |
3468a33e | 2652 | #ifdef CONFIG_PCI |
5572e103 | 2653 | struct sx_board *board; |
39103494 | 2654 | unsigned int i, reg; |
5572e103 JS |
2655 | int retval = -EIO; |
2656 | ||
42f6384f | 2657 | mutex_lock(&sx_boards_lock); |
18f813ee | 2658 | i = sx_find_free_board(); |
42f6384f JS |
2659 | if (i == SX_NBOARDS) { |
2660 | mutex_unlock(&sx_boards_lock); | |
5572e103 | 2661 | goto err; |
42f6384f JS |
2662 | } |
2663 | board = &boards[i]; | |
2664 | board->flags |= SX_BOARD_PRESENT; | |
2665 | mutex_unlock(&sx_boards_lock); | |
5572e103 JS |
2666 | |
2667 | retval = pci_enable_device(pdev); | |
2668 | if (retval) | |
42f6384f | 2669 | goto err_flag; |
5572e103 JS |
2670 | |
2671 | board->flags &= ~SX_BOARD_TYPE; | |
2672 | board->flags |= (pdev->subsystem_vendor == 0x200) ? SX_PCI_BOARD : | |
15b611f6 | 2673 | SX_CFPCI_BOARD; |
5572e103 JS |
2674 | |
2675 | /* CF boards use base address 3.... */ | |
39103494 | 2676 | reg = IS_CF_BOARD(board) ? 3 : 2; |
30f4218f JS |
2677 | retval = pci_request_region(pdev, reg, "sx"); |
2678 | if (retval) { | |
2679 | dev_err(&pdev->dev, "can't request region\n"); | |
2680 | goto err_flag; | |
2681 | } | |
39103494 | 2682 | board->hw_base = pci_resource_start(pdev, reg); |
5572e103 | 2683 | board->base2 = |
da1cfe1a | 2684 | board->base = ioremap_nocache(board->hw_base, WINDOW_LEN(board)); |
5572e103 JS |
2685 | if (!board->base) { |
2686 | dev_err(&pdev->dev, "ioremap failed\n"); | |
30f4218f | 2687 | goto err_reg; |
5572e103 JS |
2688 | } |
2689 | ||
2690 | /* Most of the stuff on the CF board is offset by 0x18000 .... */ | |
15b611f6 | 2691 | if (IS_CF_BOARD(board)) |
5572e103 JS |
2692 | board->base += 0x18000; |
2693 | ||
2694 | board->irq = pdev->irq; | |
2695 | ||
2696 | dev_info(&pdev->dev, "Got a specialix card: %p(%d) %x.\n", board->base, | |
15b611f6 | 2697 | board->irq, board->flags); |
5572e103 JS |
2698 | |
2699 | if (!probe_sx(board)) { | |
2700 | retval = -EIO; | |
2701 | goto err_unmap; | |
2702 | } | |
2703 | ||
2704 | fix_sx_pci(pdev, board); | |
2705 | ||
2706 | pci_set_drvdata(pdev, board); | |
2707 | ||
2708 | return 0; | |
2709 | err_unmap: | |
da1cfe1a | 2710 | iounmap(board->base2); |
30f4218f JS |
2711 | err_reg: |
2712 | pci_release_region(pdev, reg); | |
42f6384f JS |
2713 | err_flag: |
2714 | board->flags &= ~SX_BOARD_PRESENT; | |
5572e103 JS |
2715 | err: |
2716 | return retval; | |
3468a33e JS |
2717 | #else |
2718 | return -ENODEV; | |
2719 | #endif | |
5572e103 JS |
2720 | } |
2721 | ||
2722 | static void __devexit sx_pci_remove(struct pci_dev *pdev) | |
2723 | { | |
2724 | struct sx_board *board = pci_get_drvdata(pdev); | |
2725 | ||
39103494 | 2726 | sx_remove_card(board, pdev); |
5572e103 JS |
2727 | } |
2728 | ||
2729 | /* Specialix has a whole bunch of cards with 0x2000 as the device ID. They say | |
2730 | its because the standard requires it. So check for SUBVENDOR_ID. */ | |
2731 | static struct pci_device_id sx_pci_tbl[] = { | |
2732 | { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, | |
c14d444b | 2733 | .subvendor = PCI_ANY_ID, .subdevice = 0x0200 }, |
5572e103 | 2734 | { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, |
c14d444b | 2735 | .subvendor = PCI_ANY_ID, .subdevice = 0x0300 }, |
5572e103 JS |
2736 | { 0 } |
2737 | }; | |
15b611f6 | 2738 | |
5572e103 JS |
2739 | MODULE_DEVICE_TABLE(pci, sx_pci_tbl); |
2740 | ||
2741 | static struct pci_driver sx_pcidriver = { | |
2742 | .name = "sx", | |
2743 | .id_table = sx_pci_tbl, | |
2744 | .probe = sx_pci_probe, | |
2745 | .remove = __devexit_p(sx_pci_remove) | |
2746 | }; | |
1da177e4 | 2747 | |
15b611f6 | 2748 | static int __init sx_init(void) |
1da177e4 | 2749 | { |
18f813ee JS |
2750 | #ifdef CONFIG_EISA |
2751 | int retval1; | |
2752 | #endif | |
927a6f9d | 2753 | #ifdef CONFIG_ISA |
1da177e4 | 2754 | struct sx_board *board; |
927a6f9d JS |
2755 | unsigned int i; |
2756 | #endif | |
2757 | unsigned int found = 0; | |
2758 | int retval; | |
1da177e4 | 2759 | |
1da177e4 | 2760 | func_enter(); |
15b611f6 JS |
2761 | sx_dprintk(SX_DEBUG_INIT, "Initing sx module... (sx_debug=%d)\n", |
2762 | sx_debug); | |
2763 | if (abs((long)(&sx_debug) - sx_debug) < 0x10000) { | |
2764 | printk(KERN_WARNING "sx: sx_debug is an address, instead of a " | |
2765 | "value. Assuming -1.\n(%p)\n", &sx_debug); | |
2766 | sx_debug = -1; | |
1da177e4 LT |
2767 | } |
2768 | ||
2769 | if (misc_register(&sx_fw_device) < 0) { | |
15b611f6 JS |
2770 | printk(KERN_ERR "SX: Unable to register firmware loader " |
2771 | "driver.\n"); | |
1da177e4 LT |
2772 | return -EIO; |
2773 | } | |
927a6f9d | 2774 | #ifdef CONFIG_ISA |
15b611f6 | 2775 | for (i = 0; i < NR_SX_ADDRS; i++) { |
1da177e4 LT |
2776 | board = &boards[found]; |
2777 | board->hw_base = sx_probe_addrs[i]; | |
30f4218f JS |
2778 | board->hw_len = SX_WINDOW_LEN; |
2779 | if (!request_region(board->hw_base, board->hw_len, "sx")) | |
2780 | continue; | |
1da177e4 | 2781 | board->base2 = |
24cb2335 | 2782 | board->base = ioremap_nocache(board->hw_base, board->hw_len); |
30f4218f JS |
2783 | if (!board->base) |
2784 | goto err_sx_reg; | |
1da177e4 | 2785 | board->flags &= ~SX_BOARD_TYPE; |
15b611f6 JS |
2786 | board->flags |= SX_ISA_BOARD; |
2787 | board->irq = sx_irqmask ? -1 : 0; | |
1da177e4 | 2788 | |
15b611f6 | 2789 | if (probe_sx(board)) { |
42f6384f | 2790 | board->flags |= SX_BOARD_PRESENT; |
1da177e4 LT |
2791 | found++; |
2792 | } else { | |
2793 | iounmap(board->base); | |
30f4218f JS |
2794 | err_sx_reg: |
2795 | release_region(board->hw_base, board->hw_len); | |
1da177e4 LT |
2796 | } |
2797 | } | |
2798 | ||
15b611f6 | 2799 | for (i = 0; i < NR_SI_ADDRS; i++) { |
1da177e4 LT |
2800 | board = &boards[found]; |
2801 | board->hw_base = si_probe_addrs[i]; | |
30f4218f JS |
2802 | board->hw_len = SI2_ISA_WINDOW_LEN; |
2803 | if (!request_region(board->hw_base, board->hw_len, "sx")) | |
2804 | continue; | |
1da177e4 | 2805 | board->base2 = |
24cb2335 | 2806 | board->base = ioremap_nocache(board->hw_base, board->hw_len); |
30f4218f JS |
2807 | if (!board->base) |
2808 | goto err_si_reg; | |
1da177e4 | 2809 | board->flags &= ~SX_BOARD_TYPE; |
15b611f6 JS |
2810 | board->flags |= SI_ISA_BOARD; |
2811 | board->irq = sx_irqmask ? -1 : 0; | |
1da177e4 | 2812 | |
15b611f6 | 2813 | if (probe_si(board)) { |
42f6384f | 2814 | board->flags |= SX_BOARD_PRESENT; |
1da177e4 LT |
2815 | found++; |
2816 | } else { | |
15b611f6 | 2817 | iounmap(board->base); |
30f4218f JS |
2818 | err_si_reg: |
2819 | release_region(board->hw_base, board->hw_len); | |
1da177e4 LT |
2820 | } |
2821 | } | |
15b611f6 | 2822 | for (i = 0; i < NR_SI1_ADDRS; i++) { |
1da177e4 LT |
2823 | board = &boards[found]; |
2824 | board->hw_base = si1_probe_addrs[i]; | |
30f4218f JS |
2825 | board->hw_len = SI1_ISA_WINDOW_LEN; |
2826 | if (!request_region(board->hw_base, board->hw_len, "sx")) | |
2827 | continue; | |
1da177e4 | 2828 | board->base2 = |
24cb2335 | 2829 | board->base = ioremap_nocache(board->hw_base, board->hw_len); |
30f4218f JS |
2830 | if (!board->base) |
2831 | goto err_si1_reg; | |
1da177e4 | 2832 | board->flags &= ~SX_BOARD_TYPE; |
15b611f6 JS |
2833 | board->flags |= SI1_ISA_BOARD; |
2834 | board->irq = sx_irqmask ? -1 : 0; | |
1da177e4 | 2835 | |
15b611f6 | 2836 | if (probe_si(board)) { |
42f6384f | 2837 | board->flags |= SX_BOARD_PRESENT; |
1da177e4 LT |
2838 | found++; |
2839 | } else { | |
15b611f6 | 2840 | iounmap(board->base); |
30f4218f JS |
2841 | err_si1_reg: |
2842 | release_region(board->hw_base, board->hw_len); | |
1da177e4 LT |
2843 | } |
2844 | } | |
927a6f9d | 2845 | #endif |
18f813ee JS |
2846 | #ifdef CONFIG_EISA |
2847 | retval1 = eisa_driver_register(&sx_eisadriver); | |
2848 | #endif | |
5572e103 JS |
2849 | retval = pci_register_driver(&sx_pcidriver); |
2850 | ||
1da177e4 | 2851 | if (found) { |
15b611f6 | 2852 | printk(KERN_INFO "sx: total of %d boards detected.\n", found); |
5572e103 JS |
2853 | retval = 0; |
2854 | } else if (retval) { | |
18f813ee | 2855 | #ifdef CONFIG_EISA |
7eb9976f | 2856 | retval = retval1; |
18f813ee JS |
2857 | if (retval1) |
2858 | #endif | |
15b611f6 | 2859 | misc_deregister(&sx_fw_device); |
1da177e4 LT |
2860 | } |
2861 | ||
2862 | func_exit(); | |
5572e103 | 2863 | return retval; |
1da177e4 LT |
2864 | } |
2865 | ||
15b611f6 | 2866 | static void __exit sx_exit(void) |
1da177e4 | 2867 | { |
15b611f6 | 2868 | int i; |
1da177e4 LT |
2869 | |
2870 | func_enter(); | |
18f813ee JS |
2871 | #ifdef CONFIG_EISA |
2872 | eisa_driver_unregister(&sx_eisadriver); | |
2873 | #endif | |
5572e103 | 2874 | pci_unregister_driver(&sx_pcidriver); |
1da177e4 | 2875 | |
55e7071a | 2876 | for (i = 0; i < SX_NBOARDS; i++) |
39103494 | 2877 | sx_remove_card(&boards[i], NULL); |
55e7071a | 2878 | |
1da177e4 | 2879 | if (misc_deregister(&sx_fw_device) < 0) { |
15b611f6 JS |
2880 | printk(KERN_INFO "sx: couldn't deregister firmware loader " |
2881 | "device\n"); | |
1da177e4 | 2882 | } |
15b611f6 JS |
2883 | sx_dprintk(SX_DEBUG_CLEANUP, "Cleaning up drivers (%d)\n", |
2884 | sx_initialized); | |
1da177e4 | 2885 | if (sx_initialized) |
15b611f6 | 2886 | sx_release_drivers(); |
1da177e4 | 2887 | |
15b611f6 | 2888 | kfree(sx_ports); |
1da177e4 LT |
2889 | func_exit(); |
2890 | } | |
2891 | ||
2892 | module_init(sx_init); | |
2893 | module_exit(sx_exit); |