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1da177e4 LT |
1 | |
2 | /* sx.c -- driver for the Specialix SX series cards. | |
3 | * | |
4 | * This driver will also support the older SI, and XIO cards. | |
5 | * | |
6 | * | |
7 | * (C) 1998 - 2004 R.E.Wolff@BitWizard.nl | |
8 | * | |
9 | * Simon Allen (simonallen@cix.compulink.co.uk) wrote a previous | |
10 | * version of this driver. Some fragments may have been copied. (none | |
11 | * yet :-) | |
12 | * | |
13 | * Specialix pays for the development and support of this driver. | |
14 | * Please DO contact support@specialix.co.uk if you require | |
15 | * support. But please read the documentation (sx.txt) first. | |
16 | * | |
17 | * | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or | |
20 | * modify it under the terms of the GNU General Public License as | |
21 | * published by the Free Software Foundation; either version 2 of | |
22 | * the License, or (at your option) any later version. | |
23 | * | |
24 | * This program is distributed in the hope that it will be | |
25 | * useful, but WITHOUT ANY WARRANTY; without even the implied | |
26 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
27 | * PURPOSE. See the GNU General Public License for more details. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public | |
30 | * License along with this program; if not, write to the Free | |
31 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, | |
32 | * USA. | |
33 | * | |
34 | * Revision history: | |
35 | * $Log: sx.c,v $ | |
36 | * Revision 1.33 2000/03/09 10:00:00 pvdl,wolff | |
37 | * - Fixed module and port counting | |
38 | * - Fixed signal handling | |
39 | * - Fixed an Ooops | |
40 | * | |
41 | * Revision 1.32 2000/03/07 09:00:00 wolff,pvdl | |
42 | * - Fixed some sx_dprintk typos | |
43 | * - added detection for an invalid board/module configuration | |
44 | * | |
45 | * Revision 1.31 2000/03/06 12:00:00 wolff,pvdl | |
46 | * - Added support for EISA | |
47 | * | |
48 | * Revision 1.30 2000/01/21 17:43:06 wolff | |
49 | * - Added support for SX+ | |
50 | * | |
51 | * Revision 1.26 1999/08/05 15:22:14 wolff | |
52 | * - Port to 2.3.x | |
53 | * - Reformatted to Linus' liking. | |
54 | * | |
55 | * Revision 1.25 1999/07/30 14:24:08 wolff | |
56 | * Had accidentally left "gs_debug" set to "-1" instead of "off" (=0). | |
57 | * | |
58 | * Revision 1.24 1999/07/28 09:41:52 wolff | |
59 | * - I noticed the remark about use-count straying in sx.txt. I checked | |
60 | * sx_open, and found a few places where that could happen. I hope it's | |
61 | * fixed now. | |
62 | * | |
63 | * Revision 1.23 1999/07/28 08:56:06 wolff | |
64 | * - Fixed crash when sx_firmware run twice. | |
65 | * - Added sx_slowpoll as a module parameter (I guess nobody really wanted | |
66 | * to change it from the default... ) | |
67 | * - Fixed a stupid editing problem I introduced in 1.22. | |
68 | * - Fixed dropping characters on a termios change. | |
69 | * | |
70 | * Revision 1.22 1999/07/26 21:01:43 wolff | |
71 | * Russell Brown noticed that I had overlooked 4 out of six modem control | |
72 | * signals in sx_getsignals. Ooops. | |
73 | * | |
74 | * Revision 1.21 1999/07/23 09:11:33 wolff | |
75 | * I forgot to free dynamically allocated memory when the driver is unloaded. | |
76 | * | |
77 | * Revision 1.20 1999/07/20 06:25:26 wolff | |
78 | * The "closing wait" wasn't honoured. Thanks to James Griffiths for | |
79 | * reporting this. | |
80 | * | |
81 | * Revision 1.19 1999/07/11 08:59:59 wolff | |
82 | * Fixed an oops in close, when an open was pending. Changed the memtest | |
83 | * a bit. Should also test the board in word-mode, however my card fails the | |
84 | * memtest then. I still have to figure out what is wrong... | |
85 | * | |
86 | * Revision 1.18 1999/06/10 09:38:42 wolff | |
87 | * Changed the format of the firmware revision from %04x to %x.%02x . | |
88 | * | |
89 | * Revision 1.17 1999/06/04 09:44:35 wolff | |
90 | * fixed problem: reference to pci stuff when config_pci was off... | |
91 | * Thanks to Jorge Novo for noticing this. | |
92 | * | |
93 | * Revision 1.16 1999/06/02 08:30:15 wolff | |
94 | * added/removed the workaround for the DCD bug in the Firmware. | |
95 | * A bit more debugging code to locate that... | |
96 | * | |
97 | * Revision 1.15 1999/06/01 11:35:30 wolff | |
98 | * when DCD is left low (floating?), on TA's the firmware first tells us | |
99 | * that DCD is high, but after a short while suddenly comes to the | |
100 | * conclusion that it is low. All this would be fine, if it weren't that | |
101 | * Unix requires us to send a "hangup" signal in that case. This usually | |
102 | * all happens BEFORE the program has had a chance to ioctl the device | |
103 | * into clocal mode.. | |
104 | * | |
105 | * Revision 1.14 1999/05/25 11:18:59 wolff | |
106 | * Added PCI-fix. | |
107 | * Added checks for return code of sx_sendcommand. | |
108 | * Don't issue "reconfig" if port isn't open yet. (bit us on TA modules...) | |
109 | * | |
110 | * Revision 1.13 1999/04/29 15:18:01 wolff | |
111 | * Fixed an "oops" that showed on SuSE 6.0 systems. | |
112 | * Activate DTR again after stty 0. | |
113 | * | |
114 | * Revision 1.12 1999/04/29 07:49:52 wolff | |
115 | * Improved "stty 0" handling a bit. (used to change baud to 9600 assuming | |
116 | * the connection would be dropped anyway. That is not always the case, | |
117 | * and confuses people). | |
118 | * Told the card to always monitor the modem signals. | |
119 | * Added support for dynamic gs_debug adjustments. | |
120 | * Now tells the rest of the system the number of ports. | |
121 | * | |
122 | * Revision 1.11 1999/04/24 11:11:30 wolff | |
123 | * Fixed two stupid typos in the memory test. | |
124 | * | |
125 | * Revision 1.10 1999/04/24 10:53:39 wolff | |
126 | * Added some of Christian's suggestions. | |
127 | * Fixed an HW_COOK_IN bug (ISIG was not in I_OTHER. We used to trust the | |
128 | * card to send the signal to the process.....) | |
129 | * | |
130 | * Revision 1.9 1999/04/23 07:26:38 wolff | |
131 | * Included Christian Lademann's 2.0 compile-warning fixes and interrupt | |
132 | * assignment redesign. | |
133 | * Cleanup of some other stuff. | |
134 | * | |
135 | * Revision 1.8 1999/04/16 13:05:30 wolff | |
136 | * fixed a DCD change unnoticed bug. | |
137 | * | |
138 | * Revision 1.7 1999/04/14 22:19:51 wolff | |
139 | * Fixed typo that showed up in 2.0.x builds (get_user instead of Get_user!) | |
140 | * | |
141 | * Revision 1.6 1999/04/13 18:40:20 wolff | |
142 | * changed misc-minor to 161, as assigned by HPA. | |
143 | * | |
144 | * Revision 1.5 1999/04/13 15:12:25 wolff | |
145 | * Fixed use-count leak when "hangup" occurred. | |
146 | * Added workaround for a stupid-PCIBIOS bug. | |
147 | * | |
148 | * | |
149 | * Revision 1.4 1999/04/01 22:47:40 wolff | |
150 | * Fixed < 1M linux-2.0 problem. | |
151 | * (vremap isn't compatible with ioremap in that case) | |
152 | * | |
153 | * Revision 1.3 1999/03/31 13:45:45 wolff | |
154 | * Firmware loading is now done through a separate IOCTL. | |
155 | * | |
156 | * Revision 1.2 1999/03/28 12:22:29 wolff | |
157 | * rcs cleanup | |
158 | * | |
159 | * Revision 1.1 1999/03/28 12:10:34 wolff | |
160 | * Readying for release on 2.0.x (sorry David, 1.01 becomes 1.1 for RCS). | |
161 | * | |
162 | * Revision 0.12 1999/03/28 09:20:10 wolff | |
163 | * Fixed problem in 0.11, continueing cleanup. | |
164 | * | |
165 | * Revision 0.11 1999/03/28 08:46:44 wolff | |
166 | * cleanup. Not good. | |
167 | * | |
168 | * Revision 0.10 1999/03/28 08:09:43 wolff | |
169 | * Fixed loosing characters on close. | |
170 | * | |
171 | * Revision 0.9 1999/03/21 22:52:01 wolff | |
172 | * Ported back to 2.2.... (minor things) | |
173 | * | |
174 | * Revision 0.8 1999/03/21 22:40:33 wolff | |
175 | * Port to 2.0 | |
176 | * | |
177 | * Revision 0.7 1999/03/21 19:06:34 wolff | |
178 | * Fixed hangup processing. | |
179 | * | |
180 | * Revision 0.6 1999/02/05 08:45:14 wolff | |
181 | * fixed real_raw problems. Inclusion into kernel imminent. | |
182 | * | |
183 | * Revision 0.5 1998/12/21 23:51:06 wolff | |
184 | * Snatched a nasty bug: sx_transmit_chars was getting re-entered, and it | |
185 | * shouldn't have. THATs why I want to have transmit interrupts even when | |
186 | * the buffer is empty. | |
187 | * | |
188 | * Revision 0.4 1998/12/17 09:34:46 wolff | |
189 | * PPP works. ioctl works. Basically works! | |
190 | * | |
191 | * Revision 0.3 1998/12/15 13:05:18 wolff | |
192 | * It works! Wow! Gotta start implementing IOCTL and stuff.... | |
193 | * | |
194 | * Revision 0.2 1998/12/01 08:33:53 wolff | |
195 | * moved over to 2.1.130 | |
196 | * | |
197 | * Revision 0.1 1998/11/03 21:23:51 wolff | |
198 | * Initial revision. Detects SX card. | |
199 | * | |
200 | * */ | |
201 | ||
202 | ||
203 | #define RCS_ID "$Id: sx.c,v 1.33 2000/03/08 10:01:02 wolff, pvdl Exp $" | |
204 | #define RCS_REV "$Revision: 1.33 $" | |
205 | ||
206 | ||
207 | #include <linux/module.h> | |
208 | #include <linux/config.h> | |
209 | #include <linux/kdev_t.h> | |
210 | #include <linux/kernel.h> | |
211 | #include <linux/sched.h> | |
212 | #include <linux/ioport.h> | |
213 | #include <linux/interrupt.h> | |
214 | #include <linux/errno.h> | |
215 | #include <linux/tty.h> | |
216 | #include <linux/tty_flip.h> | |
217 | #include <linux/mm.h> | |
218 | #include <linux/serial.h> | |
219 | #include <linux/fcntl.h> | |
220 | #include <linux/major.h> | |
221 | #include <linux/delay.h> | |
222 | #include <linux/pci.h> | |
223 | #include <linux/slab.h> | |
224 | #include <linux/init.h> | |
225 | #include <linux/miscdevice.h> | |
226 | #include <linux/bitops.h> | |
227 | ||
228 | #include <asm/io.h> | |
229 | #include <asm/uaccess.h> | |
230 | ||
231 | /* The 3.0.0 version of sxboards/sxwindow.h uses BYTE and WORD.... */ | |
232 | #define BYTE u8 | |
233 | #define WORD u16 | |
234 | ||
235 | /* .... but the 3.0.4 version uses _u8 and _u16. */ | |
236 | #define _u8 u8 | |
237 | #define _u16 u16 | |
238 | ||
239 | #include "sxboards.h" | |
240 | #include "sxwindow.h" | |
241 | ||
242 | #include <linux/generic_serial.h> | |
243 | #include "sx.h" | |
244 | ||
245 | ||
246 | /* I don't think that this driver can handle more than 256 ports on | |
247 | one machine. You'll have to increase the number of boards in sx.h | |
248 | if you want more than 4 boards. */ | |
249 | ||
250 | #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 | |
251 | #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 | |
252 | #endif | |
253 | ||
254 | #ifdef CONFIG_PCI | |
255 | static struct pci_device_id sx_pci_tbl[] = { | |
256 | { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, PCI_ANY_ID, PCI_ANY_ID }, | |
257 | { 0 } | |
258 | }; | |
259 | MODULE_DEVICE_TABLE(pci, sx_pci_tbl); | |
260 | #endif /* CONFIG_PCI */ | |
261 | ||
262 | /* Configurable options: | |
263 | (Don't be too sure that it'll work if you toggle them) */ | |
264 | ||
265 | /* Am I paranoid or not ? ;-) */ | |
266 | #undef SX_PARANOIA_CHECK | |
267 | ||
268 | ||
269 | /* 20 -> 2000 per second. The card should rate-limit interrupts at 100 | |
270 | Hz, but it is user configurable. I don't recommend going above 1000 | |
271 | Hz. The interrupt ratelimit might trigger if the interrupt is | |
272 | shared with a very active other device. */ | |
273 | #define IRQ_RATE_LIMIT 20 | |
274 | ||
275 | /* Sharing interrupts is possible now. If the other device wants more | |
276 | than 2000 interrupts per second, we'd gracefully decline further | |
277 | interrupts. That's not what we want. On the other hand, if the | |
278 | other device interrupts 2000 times a second, don't use the SX | |
279 | interrupt. Use polling. */ | |
280 | #undef IRQ_RATE_LIMIT | |
281 | ||
282 | ||
283 | #if 0 | |
284 | /* Not implemented */ | |
285 | /* | |
286 | * The following defines are mostly for testing purposes. But if you need | |
287 | * some nice reporting in your syslog, you can define them also. | |
288 | */ | |
289 | #define SX_REPORT_FIFO | |
290 | #define SX_REPORT_OVERRUN | |
291 | #endif | |
292 | ||
293 | ||
294 | /* Function prototypes */ | |
295 | static void sx_disable_tx_interrupts (void * ptr); | |
296 | static void sx_enable_tx_interrupts (void * ptr); | |
297 | static void sx_disable_rx_interrupts (void * ptr); | |
298 | static void sx_enable_rx_interrupts (void * ptr); | |
299 | static int sx_get_CD (void * ptr); | |
300 | static void sx_shutdown_port (void * ptr); | |
301 | static int sx_set_real_termios (void *ptr); | |
302 | static void sx_close (void *ptr); | |
303 | static int sx_chars_in_buffer (void * ptr); | |
304 | static int sx_init_board (struct sx_board *board); | |
305 | static int sx_init_portstructs (int nboards, int nports); | |
306 | static int sx_fw_ioctl (struct inode *inode, struct file *filp, | |
307 | unsigned int cmd, unsigned long arg); | |
308 | static int sx_init_drivers(void); | |
309 | ||
310 | ||
311 | static struct tty_driver *sx_driver; | |
312 | ||
313 | static struct sx_board boards[SX_NBOARDS]; | |
314 | static struct sx_port *sx_ports; | |
315 | static int sx_initialized; | |
316 | static int sx_nports; | |
317 | static int sx_debug; | |
318 | ||
319 | ||
320 | /* You can have the driver poll your card. | |
321 | - Set sx_poll to 1 to poll every timer tick (10ms on Intel). | |
322 | This is used when the card cannot use an interrupt for some reason. | |
323 | ||
324 | - set sx_slowpoll to 100 to do an extra poll once a second (on Intel). If | |
325 | the driver misses an interrupt (report this if it DOES happen to you!) | |
326 | everything will continue to work.... | |
327 | */ | |
328 | static int sx_poll = 1; | |
329 | static int sx_slowpoll; | |
330 | ||
331 | /* The card limits the number of interrupts per second. | |
332 | At 115k2 "100" should be sufficient. | |
333 | If you're using higher baudrates, you can increase this... | |
334 | */ | |
335 | ||
336 | static int sx_maxints = 100; | |
337 | ||
338 | /* These are the only open spaces in my computer. Yours may have more | |
339 | or less.... -- REW | |
340 | duh: Card at 0xa0000 is possible on HP Netserver?? -- pvdl | |
341 | */ | |
342 | static int sx_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000, | |
343 | 0xc8000, 0xd8000, 0xe8000}; | |
344 | static int si_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000, | |
345 | 0xc8000, 0xd8000, 0xe8000, 0xa0000}; | |
346 | static int si1_probe_addrs[]= { 0xd0000}; | |
347 | ||
fe971071 TK |
348 | #define NR_SX_ADDRS ARRAY_SIZE(sx_probe_addrs) |
349 | #define NR_SI_ADDRS ARRAY_SIZE(si_probe_addrs) | |
350 | #define NR_SI1_ADDRS ARRAY_SIZE(si1_probe_addrs) | |
1da177e4 LT |
351 | |
352 | ||
353 | /* Set the mask to all-ones. This alas, only supports 32 interrupts. | |
354 | Some architectures may need more. */ | |
355 | static int sx_irqmask = -1; | |
356 | ||
357 | module_param_array(sx_probe_addrs, int, NULL, 0); | |
358 | module_param_array(si_probe_addrs, int, NULL, 0); | |
359 | module_param(sx_poll, int, 0); | |
360 | module_param(sx_slowpoll, int, 0); | |
361 | module_param(sx_maxints, int, 0); | |
362 | module_param(sx_debug, int, 0); | |
363 | module_param(sx_irqmask, int, 0); | |
364 | ||
365 | MODULE_LICENSE("GPL"); | |
366 | ||
367 | static struct real_driver sx_real_driver = { | |
368 | sx_disable_tx_interrupts, | |
369 | sx_enable_tx_interrupts, | |
370 | sx_disable_rx_interrupts, | |
371 | sx_enable_rx_interrupts, | |
372 | sx_get_CD, | |
373 | sx_shutdown_port, | |
374 | sx_set_real_termios, | |
375 | sx_chars_in_buffer, | |
376 | sx_close, | |
377 | }; | |
378 | ||
379 | ||
380 | /* | |
381 | This driver can spew a whole lot of debugging output at you. If you | |
382 | need maximum performance, you should disable the DEBUG define. To | |
383 | aid in debugging in the field, I'm leaving the compile-time debug | |
384 | features enabled, and disable them "runtime". That allows me to | |
385 | instruct people with problems to enable debugging without requiring | |
386 | them to recompile... | |
387 | */ | |
388 | #define DEBUG | |
389 | ||
390 | ||
391 | #ifdef DEBUG | |
392 | #define sx_dprintk(f, str...) if (sx_debug & f) printk (str) | |
393 | #else | |
394 | #define sx_dprintk(f, str...) /* nothing */ | |
395 | #endif | |
396 | ||
397 | ||
398 | ||
399 | #define func_enter() sx_dprintk (SX_DEBUG_FLOW, "sx: enter %s\n",__FUNCTION__) | |
400 | #define func_exit() sx_dprintk (SX_DEBUG_FLOW, "sx: exit %s\n", __FUNCTION__) | |
401 | ||
402 | #define func_enter2() sx_dprintk (SX_DEBUG_FLOW, "sx: enter %s (port %d)\n", \ | |
403 | __FUNCTION__, port->line) | |
404 | ||
405 | ||
406 | ||
407 | ||
408 | /* | |
409 | * Firmware loader driver specific routines | |
410 | * | |
411 | */ | |
412 | ||
413 | static struct file_operations sx_fw_fops = { | |
414 | .owner = THIS_MODULE, | |
415 | .ioctl = sx_fw_ioctl, | |
416 | }; | |
417 | ||
418 | static struct miscdevice sx_fw_device = { | |
419 | SXCTL_MISC_MINOR, "sxctl", &sx_fw_fops | |
420 | }; | |
421 | ||
422 | ||
423 | ||
424 | ||
425 | ||
426 | #ifdef SX_PARANOIA_CHECK | |
427 | ||
428 | /* This doesn't work. Who's paranoid around here? Not me! */ | |
429 | ||
430 | static inline int sx_paranoia_check(struct sx_port const * port, | |
431 | char *name, const char *routine) | |
432 | { | |
433 | ||
434 | static const char *badmagic = | |
435 | KERN_ERR "sx: Warning: bad sx port magic number for device %s in %s\n"; | |
436 | static const char *badinfo = | |
437 | KERN_ERR "sx: Warning: null sx port for device %s in %s\n"; | |
438 | ||
439 | if (!port) { | |
440 | printk(badinfo, name, routine); | |
441 | return 1; | |
442 | } | |
443 | if (port->magic != SX_MAGIC) { | |
444 | printk(badmagic, name, routine); | |
445 | return 1; | |
446 | } | |
447 | ||
448 | return 0; | |
449 | } | |
450 | #else | |
451 | #define sx_paranoia_check(a,b,c) 0 | |
452 | #endif | |
453 | ||
454 | /* The timeouts. First try 30 times as fast as possible. Then give | |
455 | the card some time to breathe between accesses. (Otherwise the | |
456 | processor on the card might not be able to access its OWN bus... */ | |
457 | ||
458 | #define TIMEOUT_1 30 | |
459 | #define TIMEOUT_2 1000000 | |
460 | ||
461 | ||
462 | #ifdef DEBUG | |
463 | static void my_hd_io(void __iomem *p, int len) | |
464 | { | |
465 | int i, j, ch; | |
466 | unsigned char __iomem *addr = p; | |
467 | ||
468 | for (i=0;i<len;i+=16) { | |
469 | printk ("%p ", addr+i); | |
470 | for (j=0;j<16;j++) { | |
471 | printk ("%02x %s", readb(addr+j+i), (j==7)?" ":""); | |
472 | } | |
473 | for (j=0;j<16;j++) { | |
474 | ch = readb(addr+j+i); | |
475 | printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch)); | |
476 | } | |
477 | printk ("\n"); | |
478 | } | |
479 | } | |
480 | static void my_hd(void *p, int len) | |
481 | { | |
482 | int i, j, ch; | |
483 | unsigned char *addr = p; | |
484 | ||
485 | for (i=0;i<len;i+=16) { | |
486 | printk ("%p ", addr+i); | |
487 | for (j=0;j<16;j++) { | |
488 | printk ("%02x %s", addr[j+i], (j==7)?" ":""); | |
489 | } | |
490 | for (j=0;j<16;j++) { | |
491 | ch = addr[j+i]; | |
492 | printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch)); | |
493 | } | |
494 | printk ("\n"); | |
495 | } | |
496 | } | |
497 | #endif | |
498 | ||
499 | ||
500 | ||
501 | /* This needs redoing for Alpha -- REW -- Done. */ | |
502 | ||
503 | static inline void write_sx_byte (struct sx_board *board, int offset, u8 byte) | |
504 | { | |
505 | writeb (byte, board->base+offset); | |
506 | } | |
507 | ||
508 | static inline u8 read_sx_byte (struct sx_board *board, int offset) | |
509 | { | |
510 | return readb (board->base+offset); | |
511 | } | |
512 | ||
513 | ||
514 | static inline void write_sx_word (struct sx_board *board, int offset, u16 word) | |
515 | { | |
516 | writew (word, board->base+offset); | |
517 | } | |
518 | ||
519 | static inline u16 read_sx_word (struct sx_board *board, int offset) | |
520 | { | |
521 | return readw (board->base + offset); | |
522 | } | |
523 | ||
524 | ||
525 | static int sx_busy_wait_eq (struct sx_board *board, | |
526 | int offset, int mask, int correctval) | |
527 | { | |
528 | int i; | |
529 | ||
530 | func_enter (); | |
531 | ||
532 | for (i=0; i < TIMEOUT_1 ;i++) | |
533 | if ((read_sx_byte (board, offset) & mask) == correctval) { | |
534 | func_exit (); | |
535 | return 1; | |
536 | } | |
537 | ||
538 | for (i=0; i < TIMEOUT_2 ;i++) { | |
539 | if ((read_sx_byte (board, offset) & mask) == correctval) { | |
540 | func_exit (); | |
541 | return 1; | |
542 | } | |
543 | udelay (1); | |
544 | } | |
545 | ||
546 | func_exit (); | |
547 | return 0; | |
548 | } | |
549 | ||
550 | ||
551 | static int sx_busy_wait_neq (struct sx_board *board, | |
552 | int offset, int mask, int badval) | |
553 | { | |
554 | int i; | |
555 | ||
556 | func_enter (); | |
557 | ||
558 | for (i=0; i < TIMEOUT_1 ;i++) | |
559 | if ((read_sx_byte (board, offset) & mask) != badval) { | |
560 | func_exit (); | |
561 | return 1; | |
562 | } | |
563 | ||
564 | for (i=0; i < TIMEOUT_2 ;i++) { | |
565 | if ((read_sx_byte (board, offset) & mask) != badval) { | |
566 | func_exit (); | |
567 | return 1; | |
568 | } | |
569 | udelay (1); | |
570 | } | |
571 | ||
572 | func_exit (); | |
573 | return 0; | |
574 | } | |
575 | ||
576 | ||
577 | ||
578 | /* 5.6.4 of 6210028 r2.3 */ | |
579 | static int sx_reset (struct sx_board *board) | |
580 | { | |
581 | func_enter (); | |
582 | ||
583 | if (IS_SX_BOARD (board)) { | |
584 | ||
585 | write_sx_byte (board, SX_CONFIG, 0); | |
586 | write_sx_byte (board, SX_RESET, 1); /* Value doesn't matter */ | |
587 | ||
588 | if (!sx_busy_wait_eq (board, SX_RESET_STATUS, 1, 0)) { | |
589 | printk (KERN_INFO "sx: Card doesn't respond to reset....\n"); | |
590 | return 0; | |
591 | } | |
592 | } else if (IS_EISA_BOARD(board)) { | |
593 | outb(board->irq<<4, board->eisa_base+0xc02); | |
594 | } else if (IS_SI1_BOARD(board)) { | |
595 | write_sx_byte (board, SI1_ISA_RESET, 0); // value does not matter | |
596 | } else { | |
597 | /* Gory details of the SI/ISA board */ | |
598 | write_sx_byte (board, SI2_ISA_RESET, SI2_ISA_RESET_SET); | |
599 | write_sx_byte (board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_CLEAR); | |
600 | write_sx_byte (board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_CLEAR); | |
601 | write_sx_byte (board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_CLEAR); | |
602 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); | |
603 | write_sx_byte (board, SI2_ISA_IRQSET, SI2_ISA_IRQSET_CLEAR); | |
604 | } | |
605 | ||
606 | func_exit (); | |
607 | return 1; | |
608 | } | |
609 | ||
610 | ||
611 | /* This doesn't work on machines where "NULL" isn't 0 */ | |
612 | /* If you have one of those, someone will need to write | |
613 | the equivalent of this, which will amount to about 3 lines. I don't | |
614 | want to complicate this right now. -- REW | |
615 | (See, I do write comments every now and then :-) */ | |
616 | #define OFFSETOF(strct, elem) ((long)&(((struct strct *)NULL)->elem)) | |
617 | ||
618 | ||
619 | #define CHAN_OFFSET(port,elem) (port->ch_base + OFFSETOF (_SXCHANNEL, elem)) | |
620 | #define MODU_OFFSET(board,addr,elem) (addr + OFFSETOF (_SXMODULE, elem)) | |
621 | #define BRD_OFFSET(board,elem) (OFFSETOF (_SXCARD, elem)) | |
622 | ||
623 | ||
624 | #define sx_write_channel_byte(port, elem, val) \ | |
625 | write_sx_byte (port->board, CHAN_OFFSET (port, elem), val) | |
626 | ||
627 | #define sx_read_channel_byte(port, elem) \ | |
628 | read_sx_byte (port->board, CHAN_OFFSET (port, elem)) | |
629 | ||
630 | #define sx_write_channel_word(port, elem, val) \ | |
631 | write_sx_word (port->board, CHAN_OFFSET (port, elem), val) | |
632 | ||
633 | #define sx_read_channel_word(port, elem) \ | |
634 | read_sx_word (port->board, CHAN_OFFSET (port, elem)) | |
635 | ||
636 | ||
637 | #define sx_write_module_byte(board, addr, elem, val) \ | |
638 | write_sx_byte (board, MODU_OFFSET (board, addr, elem), val) | |
639 | ||
640 | #define sx_read_module_byte(board, addr, elem) \ | |
641 | read_sx_byte (board, MODU_OFFSET (board, addr, elem)) | |
642 | ||
643 | #define sx_write_module_word(board, addr, elem, val) \ | |
644 | write_sx_word (board, MODU_OFFSET (board, addr, elem), val) | |
645 | ||
646 | #define sx_read_module_word(board, addr, elem) \ | |
647 | read_sx_word (board, MODU_OFFSET (board, addr, elem)) | |
648 | ||
649 | ||
650 | #define sx_write_board_byte(board, elem, val) \ | |
651 | write_sx_byte (board, BRD_OFFSET (board, elem), val) | |
652 | ||
653 | #define sx_read_board_byte(board, elem) \ | |
654 | read_sx_byte (board, BRD_OFFSET (board, elem)) | |
655 | ||
656 | #define sx_write_board_word(board, elem, val) \ | |
657 | write_sx_word (board, BRD_OFFSET (board, elem), val) | |
658 | ||
659 | #define sx_read_board_word(board, elem) \ | |
660 | read_sx_word (board, BRD_OFFSET (board, elem)) | |
661 | ||
662 | ||
663 | static int sx_start_board (struct sx_board *board) | |
664 | { | |
665 | if (IS_SX_BOARD (board)) { | |
666 | write_sx_byte (board, SX_CONFIG, SX_CONF_BUSEN); | |
667 | } else if (IS_EISA_BOARD(board)) { | |
668 | write_sx_byte(board, SI2_EISA_OFF, SI2_EISA_VAL); | |
669 | outb((board->irq<<4)|4, board->eisa_base+0xc02); | |
670 | } else if (IS_SI1_BOARD(board)) { | |
671 | write_sx_byte (board, SI1_ISA_RESET_CLEAR, 0); | |
672 | write_sx_byte (board, SI1_ISA_INTCL, 0); | |
673 | } else { | |
674 | /* Don't bug me about the clear_set. | |
675 | I haven't the foggiest idea what it's about -- REW */ | |
676 | write_sx_byte (board, SI2_ISA_RESET, SI2_ISA_RESET_CLEAR); | |
677 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); | |
678 | } | |
679 | return 1; | |
680 | } | |
681 | ||
682 | #define SX_IRQ_REG_VAL(board) \ | |
683 | ((board->flags & SX_ISA_BOARD)?(board->irq << 4):0) | |
684 | ||
685 | /* Note. The SX register is write-only. Therefore, we have to enable the | |
686 | bus too. This is a no-op, if you don't mess with this driver... */ | |
687 | static int sx_start_interrupts (struct sx_board *board) | |
688 | { | |
689 | ||
690 | /* Don't call this with board->irq == 0 */ | |
691 | ||
692 | if (IS_SX_BOARD(board)) { | |
693 | write_sx_byte (board, SX_CONFIG, SX_IRQ_REG_VAL (board) | | |
694 | SX_CONF_BUSEN | | |
695 | SX_CONF_HOSTIRQ); | |
696 | } else if (IS_EISA_BOARD(board)) { | |
697 | inb(board->eisa_base+0xc03); | |
698 | } else if (IS_SI1_BOARD(board)) { | |
699 | write_sx_byte (board, SI1_ISA_INTCL,0); | |
700 | write_sx_byte (board, SI1_ISA_INTCL_CLEAR,0); | |
701 | } else { | |
702 | switch (board->irq) { | |
703 | case 11:write_sx_byte (board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_SET);break; | |
704 | case 12:write_sx_byte (board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_SET);break; | |
705 | case 15:write_sx_byte (board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_SET);break; | |
706 | default:printk (KERN_INFO "sx: SI/XIO card doesn't support interrupt %d.\n", | |
707 | board->irq); | |
708 | return 0; | |
709 | } | |
710 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); | |
711 | } | |
712 | ||
713 | return 1; | |
714 | } | |
715 | ||
716 | ||
717 | static int sx_send_command (struct sx_port *port, | |
718 | int command, int mask, int newstat) | |
719 | { | |
720 | func_enter2 (); | |
721 | write_sx_byte (port->board, CHAN_OFFSET (port, hi_hstat), command); | |
722 | func_exit (); | |
723 | return sx_busy_wait_eq (port->board, CHAN_OFFSET (port, hi_hstat), mask, newstat); | |
724 | } | |
725 | ||
726 | ||
727 | static char *mod_type_s (int module_type) | |
728 | { | |
729 | switch (module_type) { | |
730 | case TA4: return "TA4"; | |
731 | case TA8: return "TA8"; | |
732 | case TA4_ASIC: return "TA4_ASIC"; | |
733 | case TA8_ASIC: return "TA8_ASIC"; | |
734 | case MTA_CD1400:return "MTA_CD1400"; | |
735 | case SXDC: return "SXDC"; | |
736 | default:return "Unknown/invalid"; | |
737 | } | |
738 | } | |
739 | ||
740 | ||
741 | static char *pan_type_s (int pan_type) | |
742 | { | |
743 | switch (pan_type) { | |
744 | case MOD_RS232DB25: return "MOD_RS232DB25"; | |
745 | case MOD_RS232RJ45: return "MOD_RS232RJ45"; | |
746 | case MOD_RS422DB25: return "MOD_RS422DB25"; | |
747 | case MOD_PARALLEL: return "MOD_PARALLEL"; | |
748 | case MOD_2_RS232DB25: return "MOD_2_RS232DB25"; | |
749 | case MOD_2_RS232RJ45: return "MOD_2_RS232RJ45"; | |
750 | case MOD_2_RS422DB25: return "MOD_2_RS422DB25"; | |
751 | case MOD_RS232DB25MALE: return "MOD_RS232DB25MALE"; | |
752 | case MOD_2_PARALLEL: return "MOD_2_PARALLEL"; | |
753 | case MOD_BLANK: return "empty"; | |
754 | default:return "invalid"; | |
755 | } | |
756 | } | |
757 | ||
758 | ||
759 | static int mod_compat_type (int module_type) | |
760 | { | |
761 | return module_type >> 4; | |
762 | } | |
763 | ||
764 | static void sx_reconfigure_port(struct sx_port *port) | |
765 | { | |
766 | if (sx_read_channel_byte (port, hi_hstat) == HS_IDLE_OPEN) { | |
767 | if (sx_send_command (port, HS_CONFIG, -1, HS_IDLE_OPEN) != 1) { | |
768 | printk (KERN_WARNING "sx: Sent reconfigure command, but card didn't react.\n"); | |
769 | } | |
770 | } else { | |
771 | sx_dprintk (SX_DEBUG_TERMIOS, | |
772 | "sx: Not sending reconfigure: port isn't open (%02x).\n", | |
773 | sx_read_channel_byte (port, hi_hstat)); | |
774 | } | |
775 | } | |
776 | ||
777 | static void sx_setsignals (struct sx_port *port, int dtr, int rts) | |
778 | { | |
779 | int t; | |
780 | func_enter2 (); | |
781 | ||
782 | t = sx_read_channel_byte (port, hi_op); | |
783 | if (dtr >= 0) t = dtr? (t | OP_DTR): (t & ~OP_DTR); | |
784 | if (rts >= 0) t = rts? (t | OP_RTS): (t & ~OP_RTS); | |
785 | sx_write_channel_byte (port, hi_op, t); | |
786 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "setsignals: %d/%d\n", dtr, rts); | |
787 | ||
788 | func_exit (); | |
789 | } | |
790 | ||
791 | ||
792 | ||
793 | static int sx_getsignals (struct sx_port *port) | |
794 | { | |
795 | int i_stat,o_stat; | |
796 | ||
797 | o_stat = sx_read_channel_byte (port, hi_op); | |
798 | i_stat = sx_read_channel_byte (port, hi_ip); | |
799 | ||
800 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) %02x/%02x\n", | |
801 | (o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0, | |
802 | port->c_dcd, sx_get_CD (port), | |
803 | sx_read_channel_byte (port, hi_ip), | |
804 | sx_read_channel_byte (port, hi_state)); | |
805 | ||
806 | return (((o_stat & OP_DTR)?TIOCM_DTR:0) | | |
807 | ((o_stat & OP_RTS)?TIOCM_RTS:0) | | |
808 | ((i_stat & IP_CTS)?TIOCM_CTS:0) | | |
809 | ((i_stat & IP_DCD)?TIOCM_CAR:0) | | |
810 | ((i_stat & IP_DSR)?TIOCM_DSR:0) | | |
811 | ((i_stat & IP_RI)?TIOCM_RNG:0) | |
812 | ); | |
813 | } | |
814 | ||
815 | ||
816 | static void sx_set_baud (struct sx_port *port) | |
817 | { | |
818 | int t; | |
819 | ||
820 | if (port->board->ta_type == MOD_SXDC) { | |
821 | switch (port->gs.baud) { | |
822 | /* Save some typing work... */ | |
823 | #define e(x) case x:t= BAUD_ ## x ; break | |
824 | e(50);e(75);e(110);e(150);e(200);e(300);e(600); | |
825 | e(1200);e(1800);e(2000);e(2400);e(4800);e(7200); | |
826 | e(9600);e(14400);e(19200);e(28800);e(38400); | |
827 | e(56000);e(57600);e(64000);e(76800);e(115200); | |
828 | e(128000);e(150000);e(230400);e(256000);e(460800); | |
829 | e(921600); | |
830 | case 134 :t = BAUD_134_5; break; | |
831 | case 0 :t = -1; | |
832 | break; | |
833 | default: | |
834 | /* Can I return "invalid"? */ | |
835 | t = BAUD_9600; | |
836 | printk (KERN_INFO "sx: unsupported baud rate: %d.\n", port->gs.baud); | |
837 | break; | |
838 | } | |
839 | #undef e | |
840 | if (t > 0) { | |
841 | /* The baud rate is not set to 0, so we're enabeling DTR... -- REW */ | |
842 | sx_setsignals (port, 1, -1); | |
843 | /* XXX This is not TA & MTA compatible */ | |
844 | sx_write_channel_byte (port, hi_csr, 0xff); | |
845 | ||
846 | sx_write_channel_byte (port, hi_txbaud, t); | |
847 | sx_write_channel_byte (port, hi_rxbaud, t); | |
848 | } else { | |
849 | sx_setsignals (port, 0, -1); | |
850 | } | |
851 | } else { | |
852 | switch (port->gs.baud) { | |
853 | #define e(x) case x:t= CSR_ ## x ; break | |
854 | e(75);e(150);e(300);e(600);e(1200);e(2400);e(4800); | |
855 | e(1800);e(9600); | |
856 | e(19200);e(57600);e(38400); | |
857 | /* TA supports 110, but not 115200, MTA supports 115200, but not 110 */ | |
858 | case 110: | |
859 | if (port->board->ta_type == MOD_TA) { | |
860 | t = CSR_110; | |
861 | break; | |
862 | } else { | |
863 | t = CSR_9600; | |
864 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); | |
865 | break; | |
866 | } | |
867 | case 115200: | |
868 | if (port->board->ta_type == MOD_TA) { | |
869 | t = CSR_9600; | |
870 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); | |
871 | break; | |
872 | } else { | |
873 | t = CSR_110; | |
874 | break; | |
875 | } | |
876 | case 0 :t = -1; | |
877 | break; | |
878 | default: | |
879 | t = CSR_9600; | |
880 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); | |
881 | break; | |
882 | } | |
883 | #undef e | |
884 | if (t >= 0) { | |
885 | sx_setsignals (port, 1, -1); | |
886 | sx_write_channel_byte (port, hi_csr, t * 0x11); | |
887 | } else { | |
888 | sx_setsignals (port, 0, -1); | |
889 | } | |
890 | } | |
891 | } | |
892 | ||
893 | ||
894 | /* Simon Allen's version of this routine was 225 lines long. 85 is a lot | |
895 | better. -- REW */ | |
896 | ||
897 | static int sx_set_real_termios (void *ptr) | |
898 | { | |
899 | struct sx_port *port = ptr; | |
900 | ||
901 | func_enter2(); | |
902 | ||
903 | if (!port->gs.tty) | |
904 | return 0; | |
905 | ||
906 | /* What is this doing here? -- REW | |
907 | Ha! figured it out. It is to allow you to get DTR active again | |
908 | if you've dropped it with stty 0. Moved to set_baud, where it | |
909 | belongs (next to the drop dtr if baud == 0) -- REW */ | |
910 | /* sx_setsignals (port, 1, -1); */ | |
911 | ||
912 | sx_set_baud (port); | |
913 | ||
914 | #define CFLAG port->gs.tty->termios->c_cflag | |
915 | sx_write_channel_byte (port, hi_mr1, | |
916 | (C_PARENB (port->gs.tty)? MR1_WITH:MR1_NONE) | | |
917 | (C_PARODD (port->gs.tty)? MR1_ODD:MR1_EVEN) | | |
918 | (C_CRTSCTS(port->gs.tty)? MR1_RTS_RXFLOW:0) | | |
919 | (((CFLAG & CSIZE)==CS8) ? MR1_8_BITS:0) | | |
920 | (((CFLAG & CSIZE)==CS7) ? MR1_7_BITS:0) | | |
921 | (((CFLAG & CSIZE)==CS6) ? MR1_6_BITS:0) | | |
922 | (((CFLAG & CSIZE)==CS5) ? MR1_5_BITS:0) ); | |
923 | ||
924 | sx_write_channel_byte (port, hi_mr2, | |
925 | (C_CRTSCTS(port->gs.tty)?MR2_CTS_TXFLOW:0) | | |
926 | (C_CSTOPB (port->gs.tty)?MR2_2_STOP:MR2_1_STOP)); | |
927 | ||
928 | switch (CFLAG & CSIZE) { | |
929 | case CS8:sx_write_channel_byte (port, hi_mask, 0xff);break; | |
930 | case CS7:sx_write_channel_byte (port, hi_mask, 0x7f);break; | |
931 | case CS6:sx_write_channel_byte (port, hi_mask, 0x3f);break; | |
932 | case CS5:sx_write_channel_byte (port, hi_mask, 0x1f);break; | |
933 | default: | |
934 | printk (KERN_INFO "sx: Invalid wordsize: %d\n", CFLAG & CSIZE); | |
935 | break; | |
936 | } | |
937 | ||
938 | sx_write_channel_byte (port, hi_prtcl, | |
939 | (I_IXON (port->gs.tty)?SP_TXEN:0) | | |
940 | (I_IXOFF (port->gs.tty)?SP_RXEN:0) | | |
941 | (I_IXANY (port->gs.tty)?SP_TANY:0) | | |
942 | SP_DCEN); | |
943 | ||
944 | sx_write_channel_byte (port, hi_break, | |
945 | (I_IGNBRK(port->gs.tty)?BR_IGN:0 | | |
946 | I_BRKINT(port->gs.tty)?BR_INT:0)); | |
947 | ||
948 | sx_write_channel_byte (port, hi_txon, START_CHAR (port->gs.tty)); | |
949 | sx_write_channel_byte (port, hi_rxon, START_CHAR (port->gs.tty)); | |
950 | sx_write_channel_byte (port, hi_txoff, STOP_CHAR (port->gs.tty)); | |
951 | sx_write_channel_byte (port, hi_rxoff, STOP_CHAR (port->gs.tty)); | |
952 | ||
953 | sx_reconfigure_port(port); | |
954 | ||
955 | /* Tell line discipline whether we will do input cooking */ | |
956 | if(I_OTHER(port->gs.tty)) { | |
957 | clear_bit(TTY_HW_COOK_IN, &port->gs.tty->flags); | |
958 | } else { | |
959 | set_bit(TTY_HW_COOK_IN, &port->gs.tty->flags); | |
960 | } | |
961 | sx_dprintk (SX_DEBUG_TERMIOS, "iflags: %x(%d) ", | |
962 | port->gs.tty->termios->c_iflag, | |
963 | I_OTHER(port->gs.tty)); | |
964 | ||
965 | ||
966 | /* Tell line discipline whether we will do output cooking. | |
967 | * If OPOST is set and no other output flags are set then we can do output | |
968 | * processing. Even if only *one* other flag in the O_OTHER group is set | |
969 | * we do cooking in software. | |
970 | */ | |
971 | if(O_OPOST(port->gs.tty) && !O_OTHER(port->gs.tty)) { | |
972 | set_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags); | |
973 | } else { | |
974 | clear_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags); | |
975 | } | |
976 | sx_dprintk (SX_DEBUG_TERMIOS, "oflags: %x(%d)\n", | |
977 | port->gs.tty->termios->c_oflag, | |
978 | O_OTHER(port->gs.tty)); | |
979 | /* port->c_dcd = sx_get_CD (port); */ | |
980 | func_exit (); | |
981 | return 0; | |
982 | } | |
983 | ||
984 | ||
985 | ||
986 | /* ********************************************************************** * | |
987 | * the interrupt related routines * | |
988 | * ********************************************************************** */ | |
989 | ||
990 | /* Note: | |
991 | Other drivers use the macro "MIN" to calculate how much to copy. | |
992 | This has the disadvantage that it will evaluate parts twice. That's | |
993 | expensive when it's IO (and the compiler cannot optimize those away!). | |
994 | Moreover, I'm not sure that you're race-free. | |
995 | ||
996 | I assign a value, and then only allow the value to decrease. This | |
997 | is always safe. This makes the code a few lines longer, and you | |
998 | know I'm dead against that, but I think it is required in this | |
999 | case. */ | |
1000 | ||
1001 | ||
1002 | static void sx_transmit_chars (struct sx_port *port) | |
1003 | { | |
1004 | int c; | |
1005 | int tx_ip; | |
1006 | int txroom; | |
1007 | ||
1008 | func_enter2 (); | |
1009 | sx_dprintk (SX_DEBUG_TRANSMIT, "Port %p: transmit %d chars\n", | |
1010 | port, port->gs.xmit_cnt); | |
1011 | ||
1012 | if (test_and_set_bit (SX_PORT_TRANSMIT_LOCK, &port->locks)) { | |
1013 | return; | |
1014 | } | |
1015 | ||
1016 | while (1) { | |
1017 | c = port->gs.xmit_cnt; | |
1018 | ||
1019 | sx_dprintk (SX_DEBUG_TRANSMIT, "Copying %d ", c); | |
1020 | tx_ip = sx_read_channel_byte (port, hi_txipos); | |
1021 | ||
1022 | /* Took me 5 minutes to deduce this formula. | |
1023 | Luckily it is literally in the manual in section 6.5.4.3.5 */ | |
1024 | txroom = (sx_read_channel_byte (port, hi_txopos) - tx_ip - 1) & 0xff; | |
1025 | ||
1026 | /* Don't copy more bytes than there is room for in the buffer */ | |
1027 | if (c > txroom) | |
1028 | c = txroom; | |
1029 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%d) ", c, txroom ); | |
1030 | ||
1031 | /* Don't copy past the end of the hardware transmit buffer */ | |
1032 | if (c > 0x100 - tx_ip) | |
1033 | c = 0x100 - tx_ip; | |
1034 | ||
1035 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%d) ", c, 0x100-tx_ip ); | |
1036 | ||
1037 | /* Don't copy pas the end of the source buffer */ | |
1038 | if (c > SERIAL_XMIT_SIZE - port->gs.xmit_tail) | |
1039 | c = SERIAL_XMIT_SIZE - port->gs.xmit_tail; | |
1040 | ||
1041 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%ld) \n", | |
1042 | c, SERIAL_XMIT_SIZE- port->gs.xmit_tail); | |
1043 | ||
1044 | /* If for one reason or another, we can't copy more data, we're done! */ | |
1045 | if (c == 0) break; | |
1046 | ||
1047 | ||
1048 | memcpy_toio (port->board->base + CHAN_OFFSET(port,hi_txbuf) + tx_ip, | |
1049 | port->gs.xmit_buf + port->gs.xmit_tail, c); | |
1050 | ||
1051 | /* Update the pointer in the card */ | |
1052 | sx_write_channel_byte (port, hi_txipos, (tx_ip+c) & 0xff); | |
1053 | ||
1054 | /* Update the kernel buffer end */ | |
1055 | port->gs.xmit_tail = (port->gs.xmit_tail + c) & (SERIAL_XMIT_SIZE-1); | |
1056 | ||
1057 | /* This one last. (this is essential) | |
1058 | It would allow others to start putting more data into the buffer! */ | |
1059 | port->gs.xmit_cnt -= c; | |
1060 | } | |
1061 | ||
1062 | if (port->gs.xmit_cnt == 0) { | |
1063 | sx_disable_tx_interrupts (port); | |
1064 | } | |
1065 | ||
1066 | if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.tty) { | |
1067 | tty_wakeup(port->gs.tty); | |
1068 | sx_dprintk (SX_DEBUG_TRANSMIT, "Waking up.... ldisc (%d)....\n", | |
1069 | port->gs.wakeup_chars); | |
1070 | } | |
1071 | ||
1072 | clear_bit (SX_PORT_TRANSMIT_LOCK, &port->locks); | |
1073 | func_exit (); | |
1074 | } | |
1075 | ||
1076 | ||
1077 | /* Note the symmetry between receiving chars and transmitting them! | |
1078 | Note: The kernel should have implemented both a receive buffer and | |
1079 | a transmit buffer. */ | |
1080 | ||
1081 | /* Inlined: Called only once. Remove the inline when you add another call */ | |
1082 | static inline void sx_receive_chars (struct sx_port *port) | |
1083 | { | |
1084 | int c; | |
1085 | int rx_op; | |
1086 | struct tty_struct *tty; | |
1087 | int copied=0; | |
1088 | ||
1089 | func_enter2 (); | |
1090 | tty = port->gs.tty; | |
1091 | while (1) { | |
1092 | rx_op = sx_read_channel_byte (port, hi_rxopos); | |
1093 | c = (sx_read_channel_byte (port, hi_rxipos) - rx_op) & 0xff; | |
1094 | ||
1095 | sx_dprintk (SX_DEBUG_RECEIVE, "rxop=%d, c = %d.\n", rx_op, c); | |
1096 | ||
1097 | /* Don't copy more bytes than there is room for in the buffer */ | |
1098 | if (tty->flip.count + c > TTY_FLIPBUF_SIZE) | |
1099 | c = TTY_FLIPBUF_SIZE - tty->flip.count; | |
1100 | ||
1101 | sx_dprintk (SX_DEBUG_RECEIVE, "c = %d.\n", c); | |
1102 | ||
1103 | /* Don't copy past the end of the hardware receive buffer */ | |
1104 | if (rx_op + c > 0x100) c = 0x100 - rx_op; | |
1105 | ||
1106 | sx_dprintk (SX_DEBUG_RECEIVE, "c = %d.\n", c); | |
1107 | ||
1108 | /* If for one reason or another, we can't copy more data, we're done! */ | |
1109 | if (c == 0) break; | |
1110 | ||
1111 | sx_dprintk (SX_DEBUG_RECEIVE , "Copying over %d chars. First is %d at %lx\n", c, | |
1112 | read_sx_byte (port->board, CHAN_OFFSET(port,hi_rxbuf) + rx_op), | |
1113 | CHAN_OFFSET(port, hi_rxbuf)); | |
1114 | memcpy_fromio (tty->flip.char_buf_ptr, | |
1115 | port->board->base + CHAN_OFFSET(port,hi_rxbuf) + rx_op, c); | |
1116 | memset(tty->flip.flag_buf_ptr, TTY_NORMAL, c); | |
1117 | ||
1118 | /* Update the kernel buffer end */ | |
1119 | tty->flip.count += c; | |
1120 | tty->flip.char_buf_ptr += c; | |
1121 | tty->flip.flag_buf_ptr += c; | |
1122 | ||
1123 | /* This one last. ( Not essential.) | |
1124 | It allows the card to start putting more data into the buffer! | |
1125 | Update the pointer in the card */ | |
1126 | sx_write_channel_byte (port, hi_rxopos, (rx_op + c) & 0xff); | |
1127 | ||
1128 | copied += c; | |
1129 | } | |
1130 | if (copied) { | |
1131 | struct timeval tv; | |
1132 | ||
1133 | do_gettimeofday (&tv); | |
1134 | sx_dprintk (SX_DEBUG_RECEIVE, | |
1135 | "pushing flipq port %d (%3d chars): %d.%06d (%d/%d)\n", | |
1136 | port->line, copied, | |
1137 | (int) (tv.tv_sec % 60), (int)tv.tv_usec, tty->raw, tty->real_raw); | |
1138 | ||
1139 | /* Tell the rest of the system the news. Great news. New characters! */ | |
1140 | tty_flip_buffer_push (tty); | |
1141 | /* tty_schedule_flip (tty); */ | |
1142 | } | |
1143 | ||
1144 | func_exit (); | |
1145 | } | |
1146 | ||
1147 | /* Inlined: it is called only once. Remove the inline if you add another | |
1148 | call */ | |
1149 | static inline void sx_check_modem_signals (struct sx_port *port) | |
1150 | { | |
1151 | int hi_state; | |
1152 | int c_dcd; | |
1153 | ||
1154 | hi_state = sx_read_channel_byte (port, hi_state); | |
1155 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n", | |
1156 | port->c_dcd, sx_get_CD (port)); | |
1157 | ||
1158 | if (hi_state & ST_BREAK) { | |
1159 | hi_state &= ~ST_BREAK; | |
1160 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "got a break.\n"); | |
1161 | sx_write_channel_byte (port, hi_state, hi_state); | |
1162 | gs_got_break (&port->gs); | |
1163 | } | |
1164 | if (hi_state & ST_DCD) { | |
1165 | hi_state &= ~ST_DCD; | |
1166 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n"); | |
1167 | sx_write_channel_byte (port, hi_state, hi_state); | |
1168 | c_dcd = sx_get_CD (port); | |
1169 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd); | |
1170 | if (c_dcd != port->c_dcd) { | |
1171 | port->c_dcd = c_dcd; | |
1172 | if (sx_get_CD (port)) { | |
1173 | /* DCD went UP */ | |
1174 | if ((sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED) && | |
1175 | !(port->gs.tty->termios->c_cflag & CLOCAL) ) { | |
1176 | /* Are we blocking in open?*/ | |
1177 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD active, unblocking open\n"); | |
1178 | wake_up_interruptible(&port->gs.open_wait); | |
1179 | } else { | |
1180 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD raised. Ignoring.\n"); | |
1181 | } | |
1182 | } else { | |
1183 | /* DCD went down! */ | |
1184 | if (!(port->gs.tty->termios->c_cflag & CLOCAL) ) { | |
1185 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD dropped. hanging up....\n"); | |
1186 | tty_hangup (port->gs.tty); | |
1187 | } else { | |
1188 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD dropped. ignoring.\n"); | |
1189 | } | |
1190 | } | |
1191 | } else { | |
1192 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "Hmmm. card told us DCD changed, but it didn't.\n"); | |
1193 | } | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | ||
1198 | /* This is what an interrupt routine should look like. | |
1199 | * Small, elegant, clear. | |
1200 | */ | |
1201 | ||
1202 | static irqreturn_t sx_interrupt (int irq, void *ptr, struct pt_regs *regs) | |
1203 | { | |
1204 | struct sx_board *board = ptr; | |
1205 | struct sx_port *port; | |
1206 | int i; | |
1207 | ||
1208 | func_enter (); | |
1209 | sx_dprintk (SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n", irq, board->irq); | |
1210 | ||
1211 | /* AAargh! The order in which to do these things is essential and | |
1212 | not trivial. | |
1213 | ||
1214 | - Rate limit goes before "recursive". Otherwise a series of | |
1215 | recursive calls will hang the machine in the interrupt routine. | |
1216 | ||
1217 | - hardware twiddling goes before "recursive". Otherwise when we | |
1218 | poll the card, and a recursive interrupt happens, we won't | |
1219 | ack the card, so it might keep on interrupting us. (especially | |
1220 | level sensitive interrupt systems like PCI). | |
1221 | ||
1222 | - Rate limit goes before hardware twiddling. Otherwise we won't | |
1223 | catch a card that has gone bonkers. | |
1224 | ||
1225 | - The "initialized" test goes after the hardware twiddling. Otherwise | |
1226 | the card will stick us in the interrupt routine again. | |
1227 | ||
1228 | - The initialized test goes before recursive. | |
1229 | */ | |
1230 | ||
1231 | ||
1232 | ||
1233 | #ifdef IRQ_RATE_LIMIT | |
1234 | /* Aaargh! I'm ashamed. This costs more lines-of-code than the | |
1235 | actual interrupt routine!. (Well, used to when I wrote that comment) */ | |
1236 | { | |
1237 | static int lastjif; | |
1238 | static int nintr=0; | |
1239 | ||
1240 | if (lastjif == jiffies) { | |
1241 | if (++nintr > IRQ_RATE_LIMIT) { | |
1242 | free_irq (board->irq, board); | |
1243 | printk (KERN_ERR "sx: Too many interrupts. Turning off interrupt %d.\n", | |
1244 | board->irq); | |
1245 | } | |
1246 | } else { | |
1247 | lastjif = jiffies; | |
1248 | nintr = 0; | |
1249 | } | |
1250 | } | |
1251 | #endif | |
1252 | ||
1253 | ||
1254 | if (board->irq == irq) { | |
1255 | /* Tell the card we've noticed the interrupt. */ | |
1256 | ||
1257 | sx_write_board_word (board, cc_int_pending, 0); | |
1258 | if (IS_SX_BOARD (board)) { | |
1259 | write_sx_byte (board, SX_RESET_IRQ, 1); | |
1260 | } else if (IS_EISA_BOARD(board)) { | |
1261 | inb(board->eisa_base+0xc03); | |
1262 | write_sx_word(board, 8, 0); | |
1263 | } else { | |
1264 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); | |
1265 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | if (!sx_initialized) | |
1270 | return IRQ_HANDLED; | |
1271 | if (!(board->flags & SX_BOARD_INITIALIZED)) | |
1272 | return IRQ_HANDLED; | |
1273 | ||
1274 | if (test_and_set_bit (SX_BOARD_INTR_LOCK, &board->locks)) { | |
1275 | printk (KERN_ERR "Recursive interrupt! (%d)\n", board->irq); | |
1276 | return IRQ_HANDLED; | |
1277 | } | |
1278 | ||
1279 | for (i=0;i<board->nports;i++) { | |
1280 | port = &board->ports[i]; | |
1281 | if (port->gs.flags & GS_ACTIVE) { | |
1282 | if (sx_read_channel_byte (port, hi_state)) { | |
1283 | sx_dprintk (SX_DEBUG_INTERRUPTS, | |
1284 | "Port %d: modem signal change?... \n", i); | |
1285 | sx_check_modem_signals (port); | |
1286 | } | |
1287 | if (port->gs.xmit_cnt) { | |
1288 | sx_transmit_chars (port); | |
1289 | } | |
1290 | if (!(port->gs.flags & SX_RX_THROTTLE)) { | |
1291 | sx_receive_chars (port); | |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | clear_bit (SX_BOARD_INTR_LOCK, &board->locks); | |
1297 | ||
1298 | sx_dprintk (SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n", irq, board->irq); | |
1299 | func_exit (); | |
1300 | return IRQ_HANDLED; | |
1301 | } | |
1302 | ||
1303 | ||
1304 | static void sx_pollfunc (unsigned long data) | |
1305 | { | |
1306 | struct sx_board *board = (struct sx_board *) data; | |
1307 | ||
1308 | func_enter (); | |
1309 | ||
1310 | sx_interrupt (0, board, NULL); | |
1311 | ||
1312 | init_timer(&board->timer); | |
1313 | ||
1314 | board->timer.expires = jiffies + sx_poll; | |
1315 | add_timer (&board->timer); | |
1316 | func_exit (); | |
1317 | } | |
1318 | ||
1319 | ||
1320 | ||
1321 | /* ********************************************************************** * | |
1322 | * Here are the routines that actually * | |
1323 | * interface with the generic_serial driver * | |
1324 | * ********************************************************************** */ | |
1325 | ||
1326 | /* Ehhm. I don't know how to fiddle with interrupts on the SX card. --REW */ | |
1327 | /* Hmm. Ok I figured it out. You don't. */ | |
1328 | ||
1329 | static void sx_disable_tx_interrupts (void * ptr) | |
1330 | { | |
1331 | struct sx_port *port = ptr; | |
1332 | func_enter2(); | |
1333 | ||
1334 | port->gs.flags &= ~GS_TX_INTEN; | |
1335 | ||
1336 | func_exit(); | |
1337 | } | |
1338 | ||
1339 | ||
1340 | static void sx_enable_tx_interrupts (void * ptr) | |
1341 | { | |
1342 | struct sx_port *port = ptr; | |
1343 | int data_in_buffer; | |
1344 | func_enter2(); | |
1345 | ||
1346 | /* First transmit the characters that we're supposed to */ | |
1347 | sx_transmit_chars (port); | |
1348 | ||
1349 | /* The sx card will never interrupt us if we don't fill the buffer | |
1350 | past 25%. So we keep considering interrupts off if that's the case. */ | |
1351 | data_in_buffer = (sx_read_channel_byte (port, hi_txipos) - | |
1352 | sx_read_channel_byte (port, hi_txopos)) & 0xff; | |
1353 | ||
1354 | /* XXX Must be "HIGH_WATER" for SI card according to doc. */ | |
1355 | if (data_in_buffer < LOW_WATER) | |
1356 | port->gs.flags &= ~GS_TX_INTEN; | |
1357 | ||
1358 | func_exit(); | |
1359 | } | |
1360 | ||
1361 | ||
1362 | static void sx_disable_rx_interrupts (void * ptr) | |
1363 | { | |
1364 | /* struct sx_port *port = ptr; */ | |
1365 | func_enter(); | |
1366 | ||
1367 | func_exit(); | |
1368 | } | |
1369 | ||
1370 | static void sx_enable_rx_interrupts (void * ptr) | |
1371 | { | |
1372 | /* struct sx_port *port = ptr; */ | |
1373 | func_enter(); | |
1374 | ||
1375 | func_exit(); | |
1376 | } | |
1377 | ||
1378 | ||
1379 | /* Jeez. Isn't this simple? */ | |
1380 | static int sx_get_CD (void * ptr) | |
1381 | { | |
1382 | struct sx_port *port = ptr; | |
1383 | func_enter2(); | |
1384 | ||
1385 | func_exit(); | |
1386 | return ((sx_read_channel_byte (port, hi_ip) & IP_DCD) != 0); | |
1387 | } | |
1388 | ||
1389 | ||
1390 | /* Jeez. Isn't this simple? */ | |
1391 | static int sx_chars_in_buffer (void * ptr) | |
1392 | { | |
1393 | struct sx_port *port = ptr; | |
1394 | func_enter2(); | |
1395 | ||
1396 | func_exit(); | |
1397 | return ((sx_read_channel_byte (port, hi_txipos) - | |
1398 | sx_read_channel_byte (port, hi_txopos)) & 0xff); | |
1399 | } | |
1400 | ||
1401 | ||
1402 | static void sx_shutdown_port (void * ptr) | |
1403 | { | |
1404 | struct sx_port *port = ptr; | |
1405 | ||
1406 | func_enter(); | |
1407 | ||
1408 | port->gs.flags &= ~ GS_ACTIVE; | |
1409 | if (port->gs.tty && (port->gs.tty->termios->c_cflag & HUPCL)) { | |
1410 | sx_setsignals (port, 0, 0); | |
1411 | sx_reconfigure_port(port); | |
1412 | } | |
1413 | ||
1414 | func_exit(); | |
1415 | } | |
1416 | ||
1417 | ||
1418 | ||
1419 | ||
1420 | ||
1421 | /* ********************************************************************** * | |
1422 | * Here are the routines that actually * | |
1423 | * interface with the rest of the system * | |
1424 | * ********************************************************************** */ | |
1425 | ||
1426 | static int sx_open (struct tty_struct * tty, struct file * filp) | |
1427 | { | |
1428 | struct sx_port *port; | |
1429 | int retval, line; | |
1430 | unsigned long flags; | |
1431 | ||
1432 | func_enter(); | |
1433 | ||
1434 | if (!sx_initialized) { | |
1435 | return -EIO; | |
1436 | } | |
1437 | ||
1438 | line = tty->index; | |
1439 | sx_dprintk (SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, np=%d)\n", | |
1440 | current->pid, line, tty, current->signal->tty, sx_nports); | |
1441 | ||
1442 | if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports)) | |
1443 | return -ENODEV; | |
1444 | ||
1445 | port = & sx_ports[line]; | |
1446 | port->c_dcd = 0; /* Make sure that the first interrupt doesn't detect a | |
1447 | 1 -> 0 transition. */ | |
1448 | ||
1449 | ||
1450 | sx_dprintk (SX_DEBUG_OPEN, "port = %p c_dcd = %d\n", port, port->c_dcd); | |
1451 | ||
1452 | spin_lock_irqsave(&port->gs.driver_lock, flags); | |
1453 | ||
1454 | tty->driver_data = port; | |
1455 | port->gs.tty = tty; | |
1456 | port->gs.count++; | |
1457 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); | |
1458 | ||
1459 | sx_dprintk (SX_DEBUG_OPEN, "starting port\n"); | |
1460 | ||
1461 | /* | |
1462 | * Start up serial port | |
1463 | */ | |
1464 | retval = gs_init_port(&port->gs); | |
1465 | sx_dprintk (SX_DEBUG_OPEN, "done gs_init\n"); | |
1466 | if (retval) { | |
1467 | port->gs.count--; | |
1468 | return retval; | |
1469 | } | |
1470 | ||
1471 | port->gs.flags |= GS_ACTIVE; | |
1472 | if (port->gs.count <= 1) | |
1473 | sx_setsignals (port, 1,1); | |
1474 | ||
1475 | #if 0 | |
1476 | if (sx_debug & SX_DEBUG_OPEN) | |
1477 | my_hd (port, sizeof (*port)); | |
1478 | #else | |
1479 | if (sx_debug & SX_DEBUG_OPEN) | |
1480 | my_hd_io (port->board->base + port->ch_base, sizeof (*port)); | |
1481 | #endif | |
1482 | ||
1483 | if (port->gs.count <= 1) { | |
1484 | if (sx_send_command (port, HS_LOPEN, -1, HS_IDLE_OPEN) != 1) { | |
1485 | printk (KERN_ERR "sx: Card didn't respond to LOPEN command.\n"); | |
1486 | spin_lock_irqsave(&port->gs.driver_lock, flags); | |
1487 | port->gs.count--; | |
1488 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); | |
1489 | return -EIO; | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | retval = gs_block_til_ready(port, filp); | |
1494 | sx_dprintk (SX_DEBUG_OPEN, "Block til ready returned %d. Count=%d\n", | |
1495 | retval, port->gs.count); | |
1496 | ||
1497 | if (retval) { | |
1498 | /* | |
1499 | * Don't lower gs.count here because sx_close() will be called later | |
1500 | */ | |
1501 | ||
1502 | return retval; | |
1503 | } | |
1504 | /* tty->low_latency = 1; */ | |
1505 | ||
1506 | port->c_dcd = sx_get_CD (port); | |
1507 | sx_dprintk (SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd); | |
1508 | ||
1509 | func_exit(); | |
1510 | return 0; | |
1511 | ||
1512 | } | |
1513 | ||
1514 | ||
1515 | static void sx_close (void *ptr) | |
1516 | { | |
1517 | struct sx_port *port = ptr; | |
1518 | /* Give the port 5 seconds to close down. */ | |
1519 | int to = 5 * HZ; | |
1520 | ||
1521 | func_enter (); | |
1522 | ||
1523 | sx_setsignals (port, 0, 0); | |
1524 | sx_reconfigure_port(port); | |
1525 | sx_send_command (port, HS_CLOSE, 0, 0); | |
1526 | ||
1527 | while (to-- && (sx_read_channel_byte (port, hi_hstat) != HS_IDLE_CLOSED)) | |
1528 | if (msleep_interruptible(10)) | |
1529 | break; | |
1530 | if (sx_read_channel_byte (port, hi_hstat) != HS_IDLE_CLOSED) { | |
1531 | if (sx_send_command (port, HS_FORCE_CLOSED, -1, HS_IDLE_CLOSED) != 1) { | |
1532 | printk (KERN_ERR | |
1533 | "sx: sent the force_close command, but card didn't react\n"); | |
1534 | } else | |
1535 | sx_dprintk (SX_DEBUG_CLOSE, "sent the force_close command.\n"); | |
1536 | } | |
1537 | ||
1538 | sx_dprintk (SX_DEBUG_CLOSE, "waited %d jiffies for close. count=%d\n", | |
1539 | 5 * HZ - to - 1, port->gs.count); | |
1540 | ||
1541 | if(port->gs.count) { | |
1542 | sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n", port->gs.count); | |
1543 | //printk ("%s SETTING port count to zero: %p count: %d\n", __FUNCTION__, port, port->gs.count); | |
1544 | //port->gs.count = 0; | |
1545 | } | |
1546 | ||
1547 | func_exit (); | |
1548 | } | |
1549 | ||
1550 | ||
1551 | ||
1552 | /* This is relatively thorough. But then again it is only 20 lines. */ | |
1553 | #define MARCHUP for (i=min;i<max;i++) | |
1554 | #define MARCHDOWN for (i=max-1;i>=min;i--) | |
1555 | #define W0 write_sx_byte (board, i, 0x55) | |
1556 | #define W1 write_sx_byte (board, i, 0xaa) | |
1557 | #define R0 if (read_sx_byte (board, i) != 0x55) return 1 | |
1558 | #define R1 if (read_sx_byte (board, i) != 0xaa) return 1 | |
1559 | ||
1560 | /* This memtest takes a human-noticable time. You normally only do it | |
1561 | once a boot, so I guess that it is worth it. */ | |
1562 | static int do_memtest (struct sx_board *board, int min, int max) | |
1563 | { | |
1564 | int i; | |
1565 | ||
1566 | /* This is a marchb. Theoretically, marchb catches much more than | |
1567 | simpler tests. In practise, the longer test just catches more | |
1568 | intermittent errors. -- REW | |
1569 | (For the theory behind memory testing see: | |
1570 | Testing Semiconductor Memories by A.J. van de Goor.) */ | |
1571 | MARCHUP {W0;} | |
1572 | MARCHUP {R0;W1;R1;W0;R0;W1;} | |
1573 | MARCHUP {R1;W0;W1;} | |
1574 | MARCHDOWN {R1;W0;W1;W0;} | |
1575 | MARCHDOWN {R0;W1;W0;} | |
1576 | ||
1577 | return 0; | |
1578 | } | |
1579 | ||
1580 | ||
1581 | #undef MARCHUP | |
1582 | #undef MARCHDOWN | |
1583 | #undef W0 | |
1584 | #undef W1 | |
1585 | #undef R0 | |
1586 | #undef R1 | |
1587 | ||
1588 | #define MARCHUP for (i=min;i<max;i+=2) | |
1589 | #define MARCHDOWN for (i=max-1;i>=min;i-=2) | |
1590 | #define W0 write_sx_word (board, i, 0x55aa) | |
1591 | #define W1 write_sx_word (board, i, 0xaa55) | |
1592 | #define R0 if (read_sx_word (board, i) != 0x55aa) return 1 | |
1593 | #define R1 if (read_sx_word (board, i) != 0xaa55) return 1 | |
1594 | ||
1595 | #if 0 | |
1596 | /* This memtest takes a human-noticable time. You normally only do it | |
1597 | once a boot, so I guess that it is worth it. */ | |
1598 | static int do_memtest_w (struct sx_board *board, int min, int max) | |
1599 | { | |
1600 | int i; | |
1601 | ||
1602 | MARCHUP {W0;} | |
1603 | MARCHUP {R0;W1;R1;W0;R0;W1;} | |
1604 | MARCHUP {R1;W0;W1;} | |
1605 | MARCHDOWN {R1;W0;W1;W0;} | |
1606 | MARCHDOWN {R0;W1;W0;} | |
1607 | ||
1608 | return 0; | |
1609 | } | |
1610 | #endif | |
1611 | ||
1612 | ||
1613 | static int sx_fw_ioctl (struct inode *inode, struct file *filp, | |
1614 | unsigned int cmd, unsigned long arg) | |
1615 | { | |
1616 | int rc = 0; | |
1617 | int __user *descr = (int __user *)arg; | |
1618 | int i; | |
1619 | static struct sx_board *board = NULL; | |
1620 | int nbytes, offset; | |
1621 | unsigned long data; | |
1622 | char *tmp; | |
1623 | ||
1624 | func_enter(); | |
1625 | ||
1626 | #if 0 | |
1627 | /* Removed superuser check: Sysops can use the permissions on the device | |
1628 | file to restrict access. Recommendation: Root only. (root.root 600) */ | |
1629 | if (!capable(CAP_SYS_ADMIN)) { | |
1630 | return -EPERM; | |
1631 | } | |
1632 | #endif | |
1633 | ||
1634 | sx_dprintk (SX_DEBUG_FIRMWARE, "IOCTL %x: %lx\n", cmd, arg); | |
1635 | ||
1636 | if (!board) board = &boards[0]; | |
1637 | if (board->flags & SX_BOARD_PRESENT) { | |
1638 | sx_dprintk (SX_DEBUG_FIRMWARE, "Board present! (%x)\n", | |
1639 | board->flags); | |
1640 | } else { | |
1641 | sx_dprintk (SX_DEBUG_FIRMWARE, "Board not present! (%x) all:", | |
1642 | board->flags); | |
1643 | for (i=0;i< SX_NBOARDS;i++) | |
1644 | sx_dprintk (SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags); | |
1645 | sx_dprintk (SX_DEBUG_FIRMWARE, "\n"); | |
1646 | return -EIO; | |
1647 | } | |
1648 | ||
1649 | switch (cmd) { | |
1650 | case SXIO_SET_BOARD: | |
1651 | sx_dprintk (SX_DEBUG_FIRMWARE, "set board to %ld\n", arg); | |
1652 | if (arg >= SX_NBOARDS) return -EIO; | |
1653 | sx_dprintk (SX_DEBUG_FIRMWARE, "not out of range\n"); | |
1654 | if (!(boards[arg].flags & SX_BOARD_PRESENT)) return -EIO; | |
1655 | sx_dprintk (SX_DEBUG_FIRMWARE, ".. and present!\n"); | |
1656 | board = &boards[arg]; | |
1657 | break; | |
1658 | case SXIO_GET_TYPE: | |
1659 | rc = -ENOENT; /* If we manage to miss one, return error. */ | |
1660 | if (IS_SX_BOARD (board)) rc = SX_TYPE_SX; | |
1661 | if (IS_CF_BOARD (board)) rc = SX_TYPE_CF; | |
1662 | if (IS_SI_BOARD (board)) rc = SX_TYPE_SI; | |
1663 | if (IS_SI1_BOARD (board)) rc = SX_TYPE_SI; | |
1664 | if (IS_EISA_BOARD (board)) rc = SX_TYPE_SI; | |
1665 | sx_dprintk (SX_DEBUG_FIRMWARE, "returning type= %d\n", rc); | |
1666 | break; | |
1667 | case SXIO_DO_RAMTEST: | |
1668 | if (sx_initialized) /* Already initialized: better not ramtest the board. */ | |
1669 | return -EPERM; | |
1670 | if (IS_SX_BOARD (board)) { | |
1671 | rc = do_memtest (board, 0, 0x7000); | |
1672 | if (!rc) rc = do_memtest (board, 0, 0x7000); | |
1673 | /*if (!rc) rc = do_memtest_w (board, 0, 0x7000);*/ | |
1674 | } else { | |
1675 | rc = do_memtest (board, 0, 0x7ff8); | |
1676 | /* if (!rc) rc = do_memtest_w (board, 0, 0x7ff8); */ | |
1677 | } | |
1678 | sx_dprintk (SX_DEBUG_FIRMWARE, "returning memtest result= %d\n", rc); | |
1679 | break; | |
1680 | case SXIO_DOWNLOAD: | |
1681 | if (sx_initialized) /* Already initialized */ | |
1682 | return -EEXIST; | |
1683 | if (!sx_reset (board)) | |
1684 | return -EIO; | |
1685 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); | |
1686 | ||
1687 | tmp = kmalloc (SX_CHUNK_SIZE, GFP_USER); | |
1688 | if (!tmp) return -ENOMEM; | |
1689 | get_user (nbytes, descr++); | |
1690 | get_user (offset, descr++); | |
1691 | get_user (data, descr++); | |
1692 | while (nbytes && data) { | |
1693 | for (i=0;i<nbytes;i += SX_CHUNK_SIZE) { | |
1694 | if (copy_from_user(tmp, (char __user *)data+i, | |
1695 | (i + SX_CHUNK_SIZE > | |
1696 | nbytes) ? nbytes - i : | |
1697 | SX_CHUNK_SIZE)) { | |
1698 | kfree (tmp); | |
1699 | return -EFAULT; | |
1700 | } | |
1701 | memcpy_toio(board->base2 + offset + i, tmp, | |
1702 | (i+SX_CHUNK_SIZE>nbytes)?nbytes-i:SX_CHUNK_SIZE); | |
1703 | } | |
1704 | ||
1705 | get_user (nbytes, descr++); | |
1706 | get_user (offset, descr++); | |
1707 | get_user (data, descr++); | |
1708 | } | |
1709 | kfree (tmp); | |
1710 | sx_nports += sx_init_board (board); | |
1711 | rc = sx_nports; | |
1712 | break; | |
1713 | case SXIO_INIT: | |
1714 | if (sx_initialized) /* Already initialized */ | |
1715 | return -EEXIST; | |
1716 | /* This is not allowed until all boards are initialized... */ | |
1717 | for (i=0;i<SX_NBOARDS;i++) { | |
1718 | if ( (boards[i].flags & SX_BOARD_PRESENT) && | |
1719 | !(boards[i].flags & SX_BOARD_INITIALIZED)) | |
1720 | return -EIO; | |
1721 | } | |
1722 | for (i=0;i<SX_NBOARDS;i++) | |
1723 | if (!(boards[i].flags & SX_BOARD_PRESENT)) break; | |
1724 | ||
1725 | sx_dprintk (SX_DEBUG_FIRMWARE, "initing portstructs, %d boards, " | |
1726 | "%d channels, first board: %d ports\n", | |
1727 | i, sx_nports, boards[0].nports); | |
1728 | rc = sx_init_portstructs (i, sx_nports); | |
1729 | sx_init_drivers (); | |
1730 | if (rc >= 0) | |
1731 | sx_initialized++; | |
1732 | break; | |
1733 | case SXIO_SETDEBUG: | |
1734 | sx_debug = arg; | |
1735 | break; | |
1736 | case SXIO_GETDEBUG: | |
1737 | rc = sx_debug; | |
1738 | break; | |
1739 | case SXIO_GETGSDEBUG: | |
1740 | case SXIO_SETGSDEBUG: | |
1741 | rc = -EINVAL; | |
1742 | break; | |
1743 | case SXIO_GETNPORTS: | |
1744 | rc = sx_nports; | |
1745 | break; | |
1746 | default: | |
1747 | printk (KERN_WARNING "Unknown ioctl on firmware device (%x).\n", cmd); | |
1748 | break; | |
1749 | } | |
1750 | func_exit (); | |
1751 | return rc; | |
1752 | } | |
1753 | ||
1754 | ||
1755 | static void sx_break (struct tty_struct * tty, int flag) | |
1756 | { | |
1757 | struct sx_port *port = tty->driver_data; | |
1758 | int rv; | |
1759 | ||
1760 | func_enter (); | |
1761 | ||
1762 | if (flag) | |
1763 | rv = sx_send_command (port, HS_START, -1, HS_IDLE_BREAK); | |
1764 | else | |
1765 | rv = sx_send_command (port, HS_STOP, -1, HS_IDLE_OPEN); | |
1766 | if (rv != 1) printk (KERN_ERR "sx: couldn't send break (%x).\n", | |
1767 | read_sx_byte (port->board, CHAN_OFFSET (port, hi_hstat))); | |
1768 | ||
1769 | func_exit (); | |
1770 | } | |
1771 | ||
1772 | ||
1773 | static int sx_tiocmget(struct tty_struct *tty, struct file *file) | |
1774 | { | |
1775 | struct sx_port *port = tty->driver_data; | |
1776 | return sx_getsignals(port); | |
1777 | } | |
1778 | ||
1779 | static int sx_tiocmset(struct tty_struct *tty, struct file *file, | |
1780 | unsigned int set, unsigned int clear) | |
1781 | { | |
1782 | struct sx_port *port = tty->driver_data; | |
1783 | int rts = -1, dtr = -1; | |
1784 | ||
1785 | if (set & TIOCM_RTS) | |
1786 | rts = 1; | |
1787 | if (set & TIOCM_DTR) | |
1788 | dtr = 1; | |
1789 | if (clear & TIOCM_RTS) | |
1790 | rts = 0; | |
1791 | if (clear & TIOCM_DTR) | |
1792 | dtr = 0; | |
1793 | ||
1794 | sx_setsignals(port, dtr, rts); | |
1795 | sx_reconfigure_port(port); | |
1796 | return 0; | |
1797 | } | |
1798 | ||
1799 | static int sx_ioctl (struct tty_struct * tty, struct file * filp, | |
1800 | unsigned int cmd, unsigned long arg) | |
1801 | { | |
1802 | int rc; | |
1803 | struct sx_port *port = tty->driver_data; | |
1804 | void __user *argp = (void __user *)arg; | |
1805 | int ival; | |
1806 | ||
1807 | /* func_enter2(); */ | |
1808 | ||
1809 | rc = 0; | |
1810 | switch (cmd) { | |
1811 | case TIOCGSOFTCAR: | |
1812 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), | |
1813 | (unsigned __user *) argp); | |
1814 | break; | |
1815 | case TIOCSSOFTCAR: | |
1816 | if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) { | |
1817 | tty->termios->c_cflag = | |
1818 | (tty->termios->c_cflag & ~CLOCAL) | | |
1819 | (ival ? CLOCAL : 0); | |
1820 | } | |
1821 | break; | |
1822 | case TIOCGSERIAL: | |
1823 | rc = gs_getserial(&port->gs, argp); | |
1824 | break; | |
1825 | case TIOCSSERIAL: | |
1826 | rc = gs_setserial(&port->gs, argp); | |
1827 | break; | |
1828 | default: | |
1829 | rc = -ENOIOCTLCMD; | |
1830 | break; | |
1831 | } | |
1832 | ||
1833 | /* func_exit(); */ | |
1834 | return rc; | |
1835 | } | |
1836 | ||
1837 | ||
1838 | /* The throttle/unthrottle scheme for the Specialix card is different | |
1839 | * from other drivers and deserves some explanation. | |
1840 | * The Specialix hardware takes care of XON/XOFF | |
1841 | * and CTS/RTS flow control itself. This means that all we have to | |
1842 | * do when signalled by the upper tty layer to throttle/unthrottle is | |
1843 | * to make a note of it here. When we come to read characters from the | |
1844 | * rx buffers on the card (sx_receive_chars()) we look to see if the | |
1845 | * upper layer can accept more (as noted here in sx_rx_throt[]). | |
1846 | * If it can't we simply don't remove chars from the cards buffer. | |
1847 | * When the tty layer can accept chars, we again note that here and when | |
1848 | * sx_receive_chars() is called it will remove them from the cards buffer. | |
1849 | * The card will notice that a ports buffer has drained below some low | |
1850 | * water mark and will unflow control the line itself, using whatever | |
1851 | * flow control scheme is in use for that port. -- Simon Allen | |
1852 | */ | |
1853 | ||
1854 | static void sx_throttle (struct tty_struct * tty) | |
1855 | { | |
1856 | struct sx_port *port = (struct sx_port *)tty->driver_data; | |
1857 | ||
1858 | func_enter2(); | |
1859 | /* If the port is using any type of input flow | |
1860 | * control then throttle the port. | |
1861 | */ | |
1862 | if((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty)) ) { | |
1863 | port->gs.flags |= SX_RX_THROTTLE; | |
1864 | } | |
1865 | func_exit(); | |
1866 | } | |
1867 | ||
1868 | ||
1869 | static void sx_unthrottle (struct tty_struct * tty) | |
1870 | { | |
1871 | struct sx_port *port = (struct sx_port *)tty->driver_data; | |
1872 | ||
1873 | func_enter2(); | |
1874 | /* Always unthrottle even if flow control is not enabled on | |
1875 | * this port in case we disabled flow control while the port | |
1876 | * was throttled | |
1877 | */ | |
1878 | port->gs.flags &= ~SX_RX_THROTTLE; | |
1879 | func_exit(); | |
1880 | return; | |
1881 | } | |
1882 | ||
1883 | ||
1884 | /* ********************************************************************** * | |
1885 | * Here are the initialization routines. * | |
1886 | * ********************************************************************** */ | |
1887 | ||
1888 | ||
1889 | ||
1890 | ||
1891 | static int sx_init_board (struct sx_board *board) | |
1892 | { | |
1893 | int addr; | |
1894 | int chans; | |
1895 | int type; | |
1896 | ||
1897 | func_enter(); | |
1898 | ||
1899 | /* This is preceded by downloading the download code. */ | |
1900 | ||
1901 | board->flags |= SX_BOARD_INITIALIZED; | |
1902 | ||
1903 | if (read_sx_byte (board, 0)) | |
1904 | /* CF boards may need this. */ | |
1905 | write_sx_byte(board,0, 0); | |
1906 | ||
1907 | /* This resets the processor again, to make sure it didn't do any | |
1908 | foolish things while we were downloading the image */ | |
1909 | if (!sx_reset (board)) | |
1910 | return 0; | |
1911 | ||
1912 | sx_start_board (board); | |
1913 | udelay (10); | |
1914 | if (!sx_busy_wait_neq (board, 0, 0xff, 0)) { | |
1915 | printk (KERN_ERR "sx: Ooops. Board won't initialize.\n"); | |
1916 | return 0; | |
1917 | } | |
1918 | ||
1919 | /* Ok. So now the processor on the card is running. It gathered | |
1920 | some info for us... */ | |
1921 | sx_dprintk (SX_DEBUG_INIT, "The sxcard structure:\n"); | |
1922 | if (sx_debug & SX_DEBUG_INIT) my_hd_io (board->base, 0x10); | |
1923 | sx_dprintk (SX_DEBUG_INIT, "the first sx_module structure:\n"); | |
1924 | if (sx_debug & SX_DEBUG_INIT) my_hd_io (board->base + 0x80, 0x30); | |
1925 | ||
1926 | sx_dprintk (SX_DEBUG_INIT, | |
1927 | "init_status: %x, %dk memory, firmware V%x.%02x,\n", | |
1928 | read_sx_byte (board, 0), read_sx_byte(board, 1), | |
1929 | read_sx_byte (board, 5), read_sx_byte(board, 4)); | |
1930 | ||
1931 | if (read_sx_byte (board, 0) == 0xff) { | |
1932 | printk (KERN_INFO "sx: No modules found. Sorry.\n"); | |
1933 | board->nports = 0; | |
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | chans = 0; | |
1938 | ||
1939 | if (IS_SX_BOARD(board)) { | |
1940 | sx_write_board_word (board, cc_int_count, sx_maxints); | |
1941 | } else { | |
1942 | if (sx_maxints) | |
1943 | sx_write_board_word (board, cc_int_count, SI_PROCESSOR_CLOCK/8/sx_maxints); | |
1944 | } | |
1945 | ||
1946 | /* grab the first module type... */ | |
1947 | /* board->ta_type = mod_compat_type (read_sx_byte (board, 0x80 + 0x08)); */ | |
1948 | board->ta_type = mod_compat_type (sx_read_module_byte (board, 0x80, mc_chip)); | |
1949 | ||
1950 | /* XXX byteorder */ | |
1951 | for (addr = 0x80;addr != 0;addr = read_sx_word (board, addr) & 0x7fff) { | |
1952 | type = sx_read_module_byte (board, addr, mc_chip); | |
1953 | sx_dprintk (SX_DEBUG_INIT, "Module at %x: %d channels\n", | |
1954 | addr, read_sx_byte (board, addr + 2)); | |
1955 | ||
1956 | chans += sx_read_module_byte (board, addr, mc_type); | |
1957 | ||
1958 | sx_dprintk (SX_DEBUG_INIT, "module is an %s, which has %s/%s panels\n", | |
1959 | mod_type_s (type), | |
1960 | pan_type_s (sx_read_module_byte (board, addr, mc_mods) & 0xf), | |
1961 | pan_type_s (sx_read_module_byte (board, addr, mc_mods) >> 4)); | |
1962 | ||
1963 | sx_dprintk (SX_DEBUG_INIT, "CD1400 versions: %x/%x, ASIC version: %x\n", | |
1964 | sx_read_module_byte (board, addr, mc_rev1), | |
1965 | sx_read_module_byte (board, addr, mc_rev2), | |
1966 | sx_read_module_byte (board, addr, mc_mtaasic_rev)); | |
1967 | ||
1968 | /* The following combinations are illegal: It should theoretically | |
1969 | work, but timing problems make the bus HANG. */ | |
1970 | ||
1971 | if (mod_compat_type (type) != board->ta_type) { | |
1972 | printk (KERN_ERR "sx: This is an invalid configuration.\n" | |
1973 | "Don't mix TA/MTA/SXDC on the same hostadapter.\n"); | |
1974 | chans=0; | |
1975 | break; | |
1976 | } | |
1977 | if ((IS_EISA_BOARD(board) || | |
1978 | IS_SI_BOARD(board)) && (mod_compat_type(type) == 4)) { | |
1979 | printk (KERN_ERR "sx: This is an invalid configuration.\n" | |
1980 | "Don't use SXDCs on an SI/XIO adapter.\n"); | |
1981 | chans=0; | |
1982 | break; | |
1983 | } | |
1984 | #if 0 /* Problem fixed: firmware 3.05 */ | |
1985 | if (IS_SX_BOARD(board) && (type == TA8)) { | |
1986 | /* There are some issues with the firmware and the DCD/RTS | |
1987 | lines. It might work if you tie them together or something. | |
1988 | It might also work if you get a newer sx_firmware. Therefore | |
1989 | this is just a warning. */ | |
1990 | printk (KERN_WARNING "sx: The SX host doesn't work too well " | |
1991 | "with the TA8 adapters.\nSpecialix is working on it.\n"); | |
1992 | } | |
1993 | #endif | |
1994 | } | |
1995 | ||
1996 | if (chans) { | |
1997 | /* board->flags |= SX_BOARD_PRESENT; */ | |
1998 | if(board->irq > 0) { | |
1999 | /* fixed irq, probably PCI */ | |
2000 | if(sx_irqmask & (1 << board->irq)) { /* may we use this irq? */ | |
2001 | if(request_irq(board->irq, sx_interrupt, SA_SHIRQ | SA_INTERRUPT, "sx", board)) { | |
2002 | printk(KERN_ERR "sx: Cannot allocate irq %d.\n", board->irq); | |
2003 | board->irq = 0; | |
2004 | } | |
2005 | } else | |
2006 | board->irq = 0; | |
2007 | } else if(board->irq < 0 && sx_irqmask) { | |
2008 | /* auto-allocate irq */ | |
2009 | int irqnr; | |
2010 | int irqmask = sx_irqmask & (IS_SX_BOARD(board) ? SX_ISA_IRQ_MASK : SI2_ISA_IRQ_MASK); | |
2011 | for(irqnr = 15; irqnr > 0; irqnr--) | |
2012 | if(irqmask & (1 << irqnr)) | |
2013 | if(! request_irq(irqnr, sx_interrupt, SA_SHIRQ | SA_INTERRUPT, "sx", board)) | |
2014 | break; | |
2015 | if(! irqnr) | |
2016 | printk(KERN_ERR "sx: Cannot allocate IRQ.\n"); | |
2017 | board->irq = irqnr; | |
2018 | } else | |
2019 | board->irq = 0; | |
2020 | ||
2021 | if (board->irq) { | |
2022 | /* Found a valid interrupt, start up interrupts! */ | |
2023 | sx_dprintk (SX_DEBUG_INIT, "Using irq %d.\n", board->irq); | |
2024 | sx_start_interrupts (board); | |
2025 | board->poll = sx_slowpoll; | |
2026 | board->flags |= SX_IRQ_ALLOCATED; | |
2027 | } else { | |
2028 | /* no irq: setup board for polled operation */ | |
2029 | board->poll = sx_poll; | |
2030 | sx_dprintk (SX_DEBUG_INIT, "Using poll-interval %d.\n", board->poll); | |
2031 | } | |
2032 | ||
2033 | /* The timer should be initialized anyway: That way we can safely | |
2034 | del_timer it when the module is unloaded. */ | |
2035 | init_timer (&board->timer); | |
2036 | ||
2037 | if (board->poll) { | |
2038 | board->timer.data = (unsigned long) board; | |
2039 | board->timer.function = sx_pollfunc; | |
2040 | board->timer.expires = jiffies + board->poll; | |
2041 | add_timer (&board->timer); | |
2042 | } | |
2043 | } else { | |
2044 | board->irq = 0; | |
2045 | } | |
2046 | ||
2047 | board->nports = chans; | |
2048 | sx_dprintk (SX_DEBUG_INIT, "returning %d ports.", board->nports); | |
2049 | ||
2050 | func_exit(); | |
2051 | return chans; | |
2052 | } | |
2053 | ||
2054 | ||
2055 | static void printheader(void) | |
2056 | { | |
2057 | static int header_printed; | |
2058 | ||
2059 | if (!header_printed) { | |
2060 | printk (KERN_INFO "Specialix SX driver " | |
2061 | "(C) 1998/1999 R.E.Wolff@BitWizard.nl \n"); | |
2062 | printk (KERN_INFO "sx: version %s\n", RCS_ID); | |
2063 | header_printed = 1; | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | ||
2068 | static int probe_sx (struct sx_board *board) | |
2069 | { | |
2070 | struct vpd_prom vpdp; | |
2071 | char *p; | |
2072 | int i; | |
2073 | ||
2074 | func_enter(); | |
2075 | ||
2076 | if (!IS_CF_BOARD (board)) { | |
2077 | sx_dprintk (SX_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", | |
2078 | board->base + SX_VPD_ROM); | |
2079 | ||
2080 | if (sx_debug & SX_DEBUG_PROBE) | |
2081 | my_hd_io(board->base + SX_VPD_ROM, 0x40); | |
2082 | ||
2083 | p = (char *) &vpdp; | |
2084 | for (i=0;i< sizeof (struct vpd_prom);i++) | |
2085 | *p++ = read_sx_byte (board, SX_VPD_ROM + i*2); | |
2086 | ||
2087 | if (sx_debug & SX_DEBUG_PROBE) | |
2088 | my_hd (&vpdp, 0x20); | |
2089 | ||
2090 | sx_dprintk (SX_DEBUG_PROBE, "checking identifier...\n"); | |
2091 | ||
2092 | if (strncmp (vpdp.identifier, SX_VPD_IDENT_STRING, 16) != 0) { | |
2093 | sx_dprintk (SX_DEBUG_PROBE, "Got non-SX identifier: '%s'\n", | |
2094 | vpdp.identifier); | |
2095 | return 0; | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | printheader (); | |
2100 | ||
2101 | if (!IS_CF_BOARD (board)) { | |
2102 | printk (KERN_DEBUG "sx: Found an SX board at %lx\n", board->hw_base); | |
2103 | printk (KERN_DEBUG "sx: hw_rev: %d, assembly level: %d, uniq ID:%08x, ", | |
2104 | vpdp.hwrev, vpdp.hwass, vpdp.uniqid); | |
2105 | printk ( "Manufactured: %d/%d\n", | |
2106 | 1970 + vpdp.myear, vpdp.mweek); | |
2107 | ||
2108 | ||
2109 | if ((((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != SX_PCI_UNIQUEID1) && | |
2110 | (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != SX_ISA_UNIQUEID1)) { | |
2111 | /* This might be a bit harsh. This was the primary reason the | |
2112 | SX/ISA card didn't work at first... */ | |
2113 | printk (KERN_ERR "sx: Hmm. Not an SX/PCI or SX/ISA card. Sorry: giving up.\n"); | |
2114 | return (0); | |
2115 | } | |
2116 | ||
2117 | if (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) == SX_ISA_UNIQUEID1) { | |
2118 | if (((unsigned long)board->hw_base) & 0x8000) { | |
2119 | printk (KERN_WARNING "sx: Warning: There may be hardware problems with the card at %lx.\n", board->hw_base); | |
2120 | printk (KERN_WARNING "sx: Read sx.txt for more info.\n"); | |
2121 | } | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | board->nports = -1; | |
2126 | ||
2127 | /* This resets the processor, and keeps it off the bus. */ | |
2128 | if (!sx_reset (board)) | |
2129 | return 0; | |
2130 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); | |
2131 | ||
2132 | board->flags |= SX_BOARD_PRESENT; | |
2133 | ||
2134 | func_exit(); | |
2135 | return 1; | |
2136 | } | |
2137 | ||
2138 | ||
2139 | ||
2140 | /* Specialix probes for this card at 32k increments from 640k to 16M. | |
2141 | I consider machines with less than 16M unlikely nowadays, so I'm | |
2142 | not probing above 1Mb. Also, 0xa0000, 0xb0000, are taken by the VGA | |
2143 | card. 0xe0000 and 0xf0000 are taken by the BIOS. That only leaves | |
2144 | 0xc0000, 0xc8000, 0xd0000 and 0xd8000 . */ | |
2145 | ||
2146 | static int probe_si (struct sx_board *board) | |
2147 | { | |
2148 | int i; | |
2149 | ||
2150 | func_enter(); | |
2151 | sx_dprintk (SX_DEBUG_PROBE, "Going to verify SI signature hw %lx at %p.\n", board->hw_base, | |
2152 | board->base + SI2_ISA_ID_BASE); | |
2153 | ||
2154 | if (sx_debug & SX_DEBUG_PROBE) | |
2155 | my_hd_io(board->base + SI2_ISA_ID_BASE, 0x8); | |
2156 | ||
2157 | if (!IS_EISA_BOARD(board)) { | |
2158 | if( IS_SI1_BOARD(board) ) | |
2159 | { | |
2160 | for (i=0;i<8;i++) { | |
2161 | write_sx_byte (board, SI2_ISA_ID_BASE+7-i,i); | |
2162 | ||
2163 | } | |
2164 | } | |
2165 | for (i=0;i<8;i++) { | |
2166 | if ((read_sx_byte (board, SI2_ISA_ID_BASE+7-i) & 7) != i) { | |
2167 | func_exit (); | |
2168 | return 0; | |
2169 | } | |
2170 | } | |
2171 | } | |
2172 | ||
2173 | /* Now we're pretty much convinced that there is an SI board here, | |
2174 | but to prevent trouble, we'd better double check that we don't | |
2175 | have an SI1 board when we're probing for an SI2 board.... */ | |
2176 | ||
2177 | write_sx_byte (board, SI2_ISA_ID_BASE,0x10); | |
2178 | if ( IS_SI1_BOARD(board)) { | |
2179 | /* This should be an SI1 board, which has this | |
2180 | location writable... */ | |
2181 | if (read_sx_byte (board, SI2_ISA_ID_BASE) != 0x10) | |
2182 | func_exit (); | |
2183 | return 0; | |
2184 | } else { | |
2185 | /* This should be an SI2 board, which has the bottom | |
2186 | 3 bits non-writable... */ | |
2187 | if (read_sx_byte (board, SI2_ISA_ID_BASE) == 0x10) | |
2188 | func_exit (); | |
2189 | return 0; | |
2190 | } | |
2191 | ||
2192 | /* Now we're pretty much convinced that there is an SI board here, | |
2193 | but to prevent trouble, we'd better double check that we don't | |
2194 | have an SI1 board when we're probing for an SI2 board.... */ | |
2195 | ||
2196 | write_sx_byte (board, SI2_ISA_ID_BASE,0x10); | |
2197 | if ( IS_SI1_BOARD(board)) { | |
2198 | /* This should be an SI1 board, which has this | |
2199 | location writable... */ | |
2200 | if (read_sx_byte (board, SI2_ISA_ID_BASE) != 0x10) | |
2201 | func_exit(); | |
2202 | return 0; | |
2203 | } else { | |
2204 | /* This should be an SI2 board, which has the bottom | |
2205 | 3 bits non-writable... */ | |
2206 | if (read_sx_byte (board, SI2_ISA_ID_BASE) == 0x10) | |
2207 | func_exit (); | |
2208 | return 0; | |
2209 | } | |
2210 | ||
2211 | printheader (); | |
2212 | ||
2213 | printk (KERN_DEBUG "sx: Found an SI board at %lx\n", board->hw_base); | |
2214 | /* Compared to the SX boards, it is a complete guess as to what | |
2215 | this card is up to... */ | |
2216 | ||
2217 | board->nports = -1; | |
2218 | ||
2219 | /* This resets the processor, and keeps it off the bus. */ | |
2220 | if (!sx_reset (board)) | |
2221 | return 0; | |
2222 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); | |
2223 | ||
2224 | board->flags |= SX_BOARD_PRESENT; | |
2225 | ||
2226 | func_exit(); | |
2227 | return 1; | |
2228 | } | |
2229 | ||
2230 | static struct tty_operations sx_ops = { | |
2231 | .break_ctl = sx_break, | |
2232 | .open = sx_open, | |
2233 | .close = gs_close, | |
2234 | .write = gs_write, | |
2235 | .put_char = gs_put_char, | |
2236 | .flush_chars = gs_flush_chars, | |
2237 | .write_room = gs_write_room, | |
2238 | .chars_in_buffer = gs_chars_in_buffer, | |
2239 | .flush_buffer = gs_flush_buffer, | |
2240 | .ioctl = sx_ioctl, | |
2241 | .throttle = sx_throttle, | |
2242 | .unthrottle = sx_unthrottle, | |
2243 | .set_termios = gs_set_termios, | |
2244 | .stop = gs_stop, | |
2245 | .start = gs_start, | |
2246 | .hangup = gs_hangup, | |
2247 | .tiocmget = sx_tiocmget, | |
2248 | .tiocmset = sx_tiocmset, | |
2249 | }; | |
2250 | ||
2251 | static int sx_init_drivers(void) | |
2252 | { | |
2253 | int error; | |
2254 | ||
2255 | func_enter(); | |
2256 | ||
2257 | sx_driver = alloc_tty_driver(sx_nports); | |
2258 | if (!sx_driver) | |
2259 | return 1; | |
2260 | sx_driver->owner = THIS_MODULE; | |
2261 | sx_driver->driver_name = "specialix_sx"; | |
2262 | sx_driver->name = "ttyX"; | |
2263 | sx_driver->major = SX_NORMAL_MAJOR; | |
2264 | sx_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
2265 | sx_driver->subtype = SERIAL_TYPE_NORMAL; | |
2266 | sx_driver->init_termios = tty_std_termios; | |
2267 | sx_driver->init_termios.c_cflag = | |
2268 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
2269 | sx_driver->flags = TTY_DRIVER_REAL_RAW; | |
2270 | tty_set_operations(sx_driver, &sx_ops); | |
2271 | ||
2272 | if ((error = tty_register_driver(sx_driver))) { | |
2273 | put_tty_driver(sx_driver); | |
2274 | printk(KERN_ERR "sx: Couldn't register sx driver, error = %d\n", | |
2275 | error); | |
2276 | return 1; | |
2277 | } | |
2278 | func_exit(); | |
2279 | return 0; | |
2280 | } | |
2281 | ||
2282 | ||
2283 | static void * ckmalloc (int size) | |
2284 | { | |
2285 | void *p; | |
2286 | ||
2287 | p = kmalloc(size, GFP_KERNEL); | |
2288 | if (p) | |
2289 | memset(p, 0, size); | |
2290 | return p; | |
2291 | } | |
2292 | ||
2293 | ||
2294 | static int sx_init_portstructs (int nboards, int nports) | |
2295 | { | |
2296 | struct sx_board *board; | |
2297 | struct sx_port *port; | |
2298 | int i, j; | |
2299 | int addr, chans; | |
2300 | int portno; | |
2301 | ||
2302 | func_enter(); | |
2303 | ||
2304 | /* Many drivers statically allocate the maximum number of ports | |
2305 | There is no reason not to allocate them dynamically. Is there? -- REW */ | |
2306 | sx_ports = ckmalloc(nports * sizeof (struct sx_port)); | |
2307 | if (!sx_ports) | |
2308 | return -ENOMEM; | |
2309 | ||
2310 | port = sx_ports; | |
2311 | for (i = 0; i < nboards; i++) { | |
2312 | board = &boards[i]; | |
2313 | board->ports = port; | |
2314 | for (j=0; j < boards[i].nports;j++) { | |
2315 | sx_dprintk (SX_DEBUG_INIT, "initing port %d\n", j); | |
2316 | port->gs.magic = SX_MAGIC; | |
2317 | port->gs.close_delay = HZ/2; | |
2318 | port->gs.closing_wait = 30 * HZ; | |
2319 | port->board = board; | |
2320 | port->gs.rd = &sx_real_driver; | |
2321 | #ifdef NEW_WRITE_LOCKING | |
2322 | port->gs.port_write_sem = MUTEX; | |
2323 | #endif | |
2324 | port->gs.driver_lock = SPIN_LOCK_UNLOCKED; | |
2325 | /* | |
2326 | * Initializing wait queue | |
2327 | */ | |
2328 | init_waitqueue_head(&port->gs.open_wait); | |
2329 | init_waitqueue_head(&port->gs.close_wait); | |
2330 | ||
2331 | port++; | |
2332 | } | |
2333 | } | |
2334 | ||
2335 | port = sx_ports; | |
2336 | portno = 0; | |
2337 | for (i = 0; i < nboards; i++) { | |
2338 | board = &boards[i]; | |
2339 | board->port_base = portno; | |
2340 | /* Possibly the configuration was rejected. */ | |
2341 | sx_dprintk (SX_DEBUG_PROBE, "Board has %d channels\n", board->nports); | |
2342 | if (board->nports <= 0) continue; | |
2343 | /* XXX byteorder ?? */ | |
2344 | for (addr = 0x80;addr != 0;addr = read_sx_word (board, addr) & 0x7fff) { | |
2345 | chans = sx_read_module_byte (board, addr, mc_type); | |
2346 | sx_dprintk (SX_DEBUG_PROBE, "Module at %x: %d channels\n", addr, chans); | |
2347 | sx_dprintk (SX_DEBUG_PROBE, "Port at"); | |
2348 | for (j=0;j<chans;j++) { | |
2349 | /* The "sx-way" is the way it SHOULD be done. That way in the | |
2350 | future, the firmware may for example pack the structures a bit | |
2351 | more efficient. Neil tells me it isn't going to happen anytime | |
2352 | soon though. */ | |
2353 | if (IS_SX_BOARD(board)) | |
2354 | port->ch_base = sx_read_module_word (board, addr+j*2, mc_chan_pointer); | |
2355 | else | |
2356 | port->ch_base = addr + 0x100 + 0x300*j; | |
2357 | ||
2358 | sx_dprintk (SX_DEBUG_PROBE, " %x", port->ch_base); | |
2359 | port->line = portno++; | |
2360 | port++; | |
2361 | } | |
2362 | sx_dprintk (SX_DEBUG_PROBE, "\n"); | |
2363 | } | |
2364 | /* This has to be done earlier. */ | |
2365 | /* board->flags |= SX_BOARD_INITIALIZED; */ | |
2366 | } | |
2367 | ||
2368 | func_exit(); | |
2369 | return 0; | |
2370 | } | |
2371 | ||
2372 | static void __exit sx_release_drivers(void) | |
2373 | { | |
2374 | func_enter(); | |
2375 | tty_unregister_driver(sx_driver); | |
2376 | put_tty_driver(sx_driver); | |
2377 | func_exit(); | |
2378 | } | |
2379 | ||
2380 | #ifdef CONFIG_PCI | |
2381 | /******************************************************** | |
2382 | * Setting bit 17 in the CNTRL register of the PLX 9050 * | |
2383 | * chip forces a retry on writes while a read is pending.* | |
2384 | * This is to prevent the card locking up on Intel Xeon * | |
2385 | * multiprocessor systems with the NX chipset. -- NV * | |
2386 | ********************************************************/ | |
2387 | ||
2388 | /* Newer cards are produced with this bit set from the configuration | |
2389 | EEprom. As the bit is read/write for the CPU, we can fix it here, | |
2390 | if we detect that it isn't set correctly. -- REW */ | |
2391 | ||
2392 | static void fix_sx_pci (struct pci_dev *pdev, struct sx_board *board) | |
2393 | { | |
2394 | unsigned int hwbase; | |
2395 | void __iomem *rebase; | |
2396 | unsigned int t; | |
2397 | ||
2398 | #define CNTRL_REG_OFFSET 0x50 | |
2399 | #define CNTRL_REG_GOODVALUE 0x18260000 | |
2400 | ||
2401 | pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); | |
2402 | hwbase &= PCI_BASE_ADDRESS_MEM_MASK; | |
2403 | rebase = ioremap(hwbase, 0x80); | |
2404 | t = readl (rebase + CNTRL_REG_OFFSET); | |
2405 | if (t != CNTRL_REG_GOODVALUE) { | |
2406 | printk (KERN_DEBUG "sx: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE); | |
2407 | writel (CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); | |
2408 | } | |
2409 | iounmap(rebase); | |
2410 | } | |
2411 | #endif | |
2412 | ||
2413 | ||
2414 | static int __init sx_init(void) | |
2415 | { | |
2416 | int i; | |
2417 | int found = 0; | |
2418 | int eisa_slot; | |
2419 | struct sx_board *board; | |
2420 | ||
2421 | #ifdef CONFIG_PCI | |
2422 | struct pci_dev *pdev = NULL; | |
2423 | unsigned int tint; | |
2424 | unsigned short tshort; | |
2425 | #endif | |
2426 | ||
2427 | func_enter(); | |
2428 | sx_dprintk (SX_DEBUG_INIT, "Initing sx module... (sx_debug=%d)\n", sx_debug); | |
2429 | if (abs ((long) (&sx_debug) - sx_debug) < 0x10000) { | |
2430 | printk (KERN_WARNING "sx: sx_debug is an address, instead of a value. " | |
2431 | "Assuming -1.\n"); | |
2432 | printk ("(%p)\n", &sx_debug); | |
2433 | sx_debug=-1; | |
2434 | } | |
2435 | ||
2436 | if (misc_register(&sx_fw_device) < 0) { | |
2437 | printk(KERN_ERR "SX: Unable to register firmware loader driver.\n"); | |
2438 | return -EIO; | |
2439 | } | |
2440 | ||
2441 | #ifdef CONFIG_PCI | |
2442 | while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, | |
2443 | PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, | |
2444 | pdev))) { | |
2445 | if (pci_enable_device(pdev)) | |
2446 | continue; | |
2447 | ||
2448 | /* Specialix has a whole bunch of cards with | |
2449 | 0x2000 as the device ID. They say its because | |
2450 | the standard requires it. Stupid standard. */ | |
2451 | /* It seems that reading a word doesn't work reliably on 2.0. | |
2452 | Also, reading a non-aligned dword doesn't work. So we read the | |
2453 | whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID) | |
2454 | ourselves */ | |
2455 | /* I don't know why the define doesn't work, constant 0x2c does --REW */ | |
2456 | pci_read_config_dword (pdev, 0x2c, &tint); | |
2457 | tshort = (tint >> 16) & 0xffff; | |
2458 | sx_dprintk (SX_DEBUG_PROBE, "Got a specialix card: %x.\n", tint); | |
2459 | /* sx_dprintk (SX_DEBUG_PROBE, "pdev = %d/%d (%x)\n", pdev, tint); */ | |
2460 | if ((tshort != 0x0200) && (tshort != 0x0300)) { | |
2461 | sx_dprintk (SX_DEBUG_PROBE, "But it's not an SX card (%d)...\n", | |
2462 | tshort); | |
2463 | continue; | |
2464 | } | |
2465 | board = &boards[found]; | |
2466 | ||
2467 | board->flags &= ~SX_BOARD_TYPE; | |
2468 | board->flags |= (tshort == 0x200)?SX_PCI_BOARD: | |
2469 | SX_CFPCI_BOARD; | |
2470 | ||
2471 | /* CF boards use base address 3.... */ | |
2472 | if (IS_CF_BOARD (board)) | |
2473 | board->hw_base = pci_resource_start (pdev, 3); | |
2474 | else | |
2475 | board->hw_base = pci_resource_start (pdev, 2); | |
2476 | board->base2 = | |
2477 | board->base = ioremap(board->hw_base, WINDOW_LEN (board)); | |
2478 | if (!board->base) { | |
2479 | printk(KERN_ERR "ioremap failed\n"); | |
2480 | /* XXX handle error */ | |
2481 | } | |
2482 | ||
2483 | /* Most of the stuff on the CF board is offset by | |
2484 | 0x18000 .... */ | |
2485 | if (IS_CF_BOARD (board)) board->base += 0x18000; | |
2486 | ||
2487 | board->irq = pdev->irq; | |
2488 | ||
2489 | sx_dprintk (SX_DEBUG_PROBE, "Got a specialix card: %x/%p(%d) %x.\n", | |
2490 | tint, boards[found].base, board->irq, board->flags); | |
2491 | ||
2492 | if (probe_sx (board)) { | |
2493 | found++; | |
2494 | fix_sx_pci (pdev, board); | |
2495 | } else | |
2496 | iounmap(board->base2); | |
2497 | } | |
2498 | #endif | |
2499 | ||
2500 | for (i=0;i<NR_SX_ADDRS;i++) { | |
2501 | board = &boards[found]; | |
2502 | board->hw_base = sx_probe_addrs[i]; | |
2503 | board->base2 = | |
2504 | board->base = ioremap(board->hw_base, SX_WINDOW_LEN); | |
2505 | board->flags &= ~SX_BOARD_TYPE; | |
2506 | board->flags |= SX_ISA_BOARD; | |
2507 | board->irq = sx_irqmask?-1:0; | |
2508 | ||
2509 | if (probe_sx (board)) { | |
2510 | found++; | |
2511 | } else { | |
2512 | iounmap(board->base); | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | for (i=0;i<NR_SI_ADDRS;i++) { | |
2517 | board = &boards[found]; | |
2518 | board->hw_base = si_probe_addrs[i]; | |
2519 | board->base2 = | |
2520 | board->base = ioremap(board->hw_base, SI2_ISA_WINDOW_LEN); | |
2521 | board->flags &= ~SX_BOARD_TYPE; | |
2522 | board->flags |= SI_ISA_BOARD; | |
2523 | board->irq = sx_irqmask ?-1:0; | |
2524 | ||
2525 | if (probe_si (board)) { | |
2526 | found++; | |
2527 | } else { | |
2528 | iounmap (board->base); | |
2529 | } | |
2530 | } | |
2531 | for (i=0;i<NR_SI1_ADDRS;i++) { | |
2532 | board = &boards[found]; | |
2533 | board->hw_base = si1_probe_addrs[i]; | |
2534 | board->base2 = | |
2535 | board->base = ioremap(board->hw_base, SI1_ISA_WINDOW_LEN); | |
2536 | board->flags &= ~SX_BOARD_TYPE; | |
2537 | board->flags |= SI1_ISA_BOARD; | |
2538 | board->irq = sx_irqmask ?-1:0; | |
2539 | ||
2540 | if (probe_si (board)) { | |
2541 | found++; | |
2542 | } else { | |
2543 | iounmap (board->base); | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | sx_dprintk(SX_DEBUG_PROBE, "Probing for EISA cards\n"); | |
2548 | for(eisa_slot=0x1000; eisa_slot<0x10000; eisa_slot+=0x1000) | |
2549 | { | |
2550 | if((inb(eisa_slot+0xc80)==0x4d) && | |
2551 | (inb(eisa_slot+0xc81)==0x98)) | |
2552 | { | |
2553 | sx_dprintk(SX_DEBUG_PROBE, "%s : Signature found in EISA slot %d, Product %d Rev %d\n", | |
2554 | "XIO", (eisa_slot>>12), inb(eisa_slot+0xc82), inb(eisa_slot+0xc83)); | |
2555 | ||
2556 | board = &boards[found]; | |
2557 | board->eisa_base = eisa_slot; | |
2558 | board->flags &= ~SX_BOARD_TYPE; | |
2559 | board->flags |= SI_EISA_BOARD; | |
2560 | ||
2561 | board->hw_base = (((inb(0xc01+eisa_slot) << 8) + inb(0xc00+eisa_slot)) << 16); | |
2562 | board->base2 = | |
2563 | board->base = ioremap(board->hw_base, SI2_EISA_WINDOW_LEN); | |
2564 | ||
2565 | sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base); | |
2566 | sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base); | |
2567 | board->irq = inb(board->eisa_base+0xc02)>>4; | |
2568 | sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq); | |
2569 | ||
2570 | probe_si(board); | |
2571 | ||
2572 | found++; | |
2573 | } | |
2574 | } | |
2575 | if (found) { | |
2576 | printk (KERN_INFO "sx: total of %d boards detected.\n", found); | |
2577 | } else { | |
2578 | misc_deregister(&sx_fw_device); | |
2579 | } | |
2580 | ||
2581 | func_exit(); | |
2582 | return found?0:-EIO; | |
2583 | } | |
2584 | ||
2585 | ||
2586 | static void __exit sx_exit (void) | |
2587 | { | |
2588 | int i; | |
2589 | struct sx_board *board; | |
2590 | ||
2591 | func_enter(); | |
2592 | for (i = 0; i < SX_NBOARDS; i++) { | |
2593 | board = &boards[i]; | |
2594 | if (board->flags & SX_BOARD_INITIALIZED) { | |
2595 | sx_dprintk (SX_DEBUG_CLEANUP, "Cleaning up board at %p\n", board->base); | |
2596 | /* The board should stop messing with us. | |
2597 | (actually I mean the interrupt) */ | |
2598 | sx_reset (board); | |
2599 | if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED)) | |
2600 | free_irq (board->irq, board); | |
2601 | ||
2602 | /* It is safe/allowed to del_timer a non-active timer */ | |
2603 | del_timer (& board->timer); | |
2604 | iounmap(board->base); | |
2605 | } | |
2606 | } | |
2607 | if (misc_deregister(&sx_fw_device) < 0) { | |
2608 | printk (KERN_INFO "sx: couldn't deregister firmware loader devic\n"); | |
2609 | } | |
2610 | sx_dprintk (SX_DEBUG_CLEANUP, "Cleaning up drivers (%d)\n", sx_initialized); | |
2611 | if (sx_initialized) | |
2612 | sx_release_drivers (); | |
2613 | ||
2614 | kfree (sx_ports); | |
2615 | func_exit(); | |
2616 | } | |
2617 | ||
2618 | module_init(sx_init); | |
2619 | module_exit(sx_exit); | |
2620 | ||
2621 |