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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 | ||
1da177e4 | 206 | #include <linux/module.h> |
1da177e4 LT |
207 | #include <linux/kdev_t.h> |
208 | #include <linux/kernel.h> | |
209 | #include <linux/sched.h> | |
210 | #include <linux/ioport.h> | |
211 | #include <linux/interrupt.h> | |
212 | #include <linux/errno.h> | |
213 | #include <linux/tty.h> | |
214 | #include <linux/tty_flip.h> | |
215 | #include <linux/mm.h> | |
216 | #include <linux/serial.h> | |
217 | #include <linux/fcntl.h> | |
218 | #include <linux/major.h> | |
219 | #include <linux/delay.h> | |
220 | #include <linux/pci.h> | |
221 | #include <linux/slab.h> | |
222 | #include <linux/init.h> | |
223 | #include <linux/miscdevice.h> | |
224 | #include <linux/bitops.h> | |
225 | ||
226 | #include <asm/io.h> | |
227 | #include <asm/uaccess.h> | |
228 | ||
229 | /* The 3.0.0 version of sxboards/sxwindow.h uses BYTE and WORD.... */ | |
230 | #define BYTE u8 | |
231 | #define WORD u16 | |
232 | ||
233 | /* .... but the 3.0.4 version uses _u8 and _u16. */ | |
234 | #define _u8 u8 | |
235 | #define _u16 u16 | |
236 | ||
237 | #include "sxboards.h" | |
238 | #include "sxwindow.h" | |
239 | ||
240 | #include <linux/generic_serial.h> | |
241 | #include "sx.h" | |
242 | ||
243 | ||
244 | /* I don't think that this driver can handle more than 256 ports on | |
245 | one machine. You'll have to increase the number of boards in sx.h | |
246 | if you want more than 4 boards. */ | |
247 | ||
248 | #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 | |
249 | #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 | |
250 | #endif | |
251 | ||
252 | #ifdef CONFIG_PCI | |
253 | static struct pci_device_id sx_pci_tbl[] = { | |
254 | { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, PCI_ANY_ID, PCI_ANY_ID }, | |
255 | { 0 } | |
256 | }; | |
257 | MODULE_DEVICE_TABLE(pci, sx_pci_tbl); | |
258 | #endif /* CONFIG_PCI */ | |
259 | ||
260 | /* Configurable options: | |
261 | (Don't be too sure that it'll work if you toggle them) */ | |
262 | ||
263 | /* Am I paranoid or not ? ;-) */ | |
264 | #undef SX_PARANOIA_CHECK | |
265 | ||
266 | ||
267 | /* 20 -> 2000 per second. The card should rate-limit interrupts at 100 | |
268 | Hz, but it is user configurable. I don't recommend going above 1000 | |
269 | Hz. The interrupt ratelimit might trigger if the interrupt is | |
270 | shared with a very active other device. */ | |
271 | #define IRQ_RATE_LIMIT 20 | |
272 | ||
273 | /* Sharing interrupts is possible now. If the other device wants more | |
274 | than 2000 interrupts per second, we'd gracefully decline further | |
275 | interrupts. That's not what we want. On the other hand, if the | |
276 | other device interrupts 2000 times a second, don't use the SX | |
277 | interrupt. Use polling. */ | |
278 | #undef IRQ_RATE_LIMIT | |
279 | ||
280 | ||
281 | #if 0 | |
282 | /* Not implemented */ | |
283 | /* | |
284 | * The following defines are mostly for testing purposes. But if you need | |
285 | * some nice reporting in your syslog, you can define them also. | |
286 | */ | |
287 | #define SX_REPORT_FIFO | |
288 | #define SX_REPORT_OVERRUN | |
289 | #endif | |
290 | ||
291 | ||
292 | /* Function prototypes */ | |
293 | static void sx_disable_tx_interrupts (void * ptr); | |
294 | static void sx_enable_tx_interrupts (void * ptr); | |
295 | static void sx_disable_rx_interrupts (void * ptr); | |
296 | static void sx_enable_rx_interrupts (void * ptr); | |
297 | static int sx_get_CD (void * ptr); | |
298 | static void sx_shutdown_port (void * ptr); | |
299 | static int sx_set_real_termios (void *ptr); | |
300 | static void sx_close (void *ptr); | |
301 | static int sx_chars_in_buffer (void * ptr); | |
302 | static int sx_init_board (struct sx_board *board); | |
303 | static int sx_init_portstructs (int nboards, int nports); | |
304 | static int sx_fw_ioctl (struct inode *inode, struct file *filp, | |
305 | unsigned int cmd, unsigned long arg); | |
306 | static int sx_init_drivers(void); | |
307 | ||
308 | ||
309 | static struct tty_driver *sx_driver; | |
310 | ||
311 | static struct sx_board boards[SX_NBOARDS]; | |
312 | static struct sx_port *sx_ports; | |
313 | static int sx_initialized; | |
314 | static int sx_nports; | |
315 | static int sx_debug; | |
316 | ||
317 | ||
318 | /* You can have the driver poll your card. | |
319 | - Set sx_poll to 1 to poll every timer tick (10ms on Intel). | |
320 | This is used when the card cannot use an interrupt for some reason. | |
321 | ||
322 | - set sx_slowpoll to 100 to do an extra poll once a second (on Intel). If | |
323 | the driver misses an interrupt (report this if it DOES happen to you!) | |
324 | everything will continue to work.... | |
325 | */ | |
326 | static int sx_poll = 1; | |
327 | static int sx_slowpoll; | |
328 | ||
329 | /* The card limits the number of interrupts per second. | |
330 | At 115k2 "100" should be sufficient. | |
331 | If you're using higher baudrates, you can increase this... | |
332 | */ | |
333 | ||
334 | static int sx_maxints = 100; | |
335 | ||
336 | /* These are the only open spaces in my computer. Yours may have more | |
337 | or less.... -- REW | |
338 | duh: Card at 0xa0000 is possible on HP Netserver?? -- pvdl | |
339 | */ | |
340 | static int sx_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000, | |
341 | 0xc8000, 0xd8000, 0xe8000}; | |
342 | static int si_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000, | |
343 | 0xc8000, 0xd8000, 0xe8000, 0xa0000}; | |
344 | static int si1_probe_addrs[]= { 0xd0000}; | |
345 | ||
fe971071 TK |
346 | #define NR_SX_ADDRS ARRAY_SIZE(sx_probe_addrs) |
347 | #define NR_SI_ADDRS ARRAY_SIZE(si_probe_addrs) | |
348 | #define NR_SI1_ADDRS ARRAY_SIZE(si1_probe_addrs) | |
1da177e4 LT |
349 | |
350 | ||
351 | /* Set the mask to all-ones. This alas, only supports 32 interrupts. | |
352 | Some architectures may need more. */ | |
353 | static int sx_irqmask = -1; | |
354 | ||
355 | module_param_array(sx_probe_addrs, int, NULL, 0); | |
356 | module_param_array(si_probe_addrs, int, NULL, 0); | |
357 | module_param(sx_poll, int, 0); | |
358 | module_param(sx_slowpoll, int, 0); | |
359 | module_param(sx_maxints, int, 0); | |
360 | module_param(sx_debug, int, 0); | |
361 | module_param(sx_irqmask, int, 0); | |
362 | ||
363 | MODULE_LICENSE("GPL"); | |
364 | ||
365 | static struct real_driver sx_real_driver = { | |
366 | sx_disable_tx_interrupts, | |
367 | sx_enable_tx_interrupts, | |
368 | sx_disable_rx_interrupts, | |
369 | sx_enable_rx_interrupts, | |
370 | sx_get_CD, | |
371 | sx_shutdown_port, | |
372 | sx_set_real_termios, | |
373 | sx_chars_in_buffer, | |
374 | sx_close, | |
375 | }; | |
376 | ||
377 | ||
378 | /* | |
379 | This driver can spew a whole lot of debugging output at you. If you | |
380 | need maximum performance, you should disable the DEBUG define. To | |
381 | aid in debugging in the field, I'm leaving the compile-time debug | |
382 | features enabled, and disable them "runtime". That allows me to | |
383 | instruct people with problems to enable debugging without requiring | |
384 | them to recompile... | |
385 | */ | |
386 | #define DEBUG | |
387 | ||
388 | ||
389 | #ifdef DEBUG | |
390 | #define sx_dprintk(f, str...) if (sx_debug & f) printk (str) | |
391 | #else | |
392 | #define sx_dprintk(f, str...) /* nothing */ | |
393 | #endif | |
394 | ||
395 | ||
396 | ||
397 | #define func_enter() sx_dprintk (SX_DEBUG_FLOW, "sx: enter %s\n",__FUNCTION__) | |
398 | #define func_exit() sx_dprintk (SX_DEBUG_FLOW, "sx: exit %s\n", __FUNCTION__) | |
399 | ||
400 | #define func_enter2() sx_dprintk (SX_DEBUG_FLOW, "sx: enter %s (port %d)\n", \ | |
401 | __FUNCTION__, port->line) | |
402 | ||
403 | ||
404 | ||
405 | ||
406 | /* | |
407 | * Firmware loader driver specific routines | |
408 | * | |
409 | */ | |
410 | ||
62322d25 | 411 | static const struct file_operations sx_fw_fops = { |
1da177e4 LT |
412 | .owner = THIS_MODULE, |
413 | .ioctl = sx_fw_ioctl, | |
414 | }; | |
415 | ||
416 | static struct miscdevice sx_fw_device = { | |
417 | SXCTL_MISC_MINOR, "sxctl", &sx_fw_fops | |
418 | }; | |
419 | ||
420 | ||
421 | ||
422 | ||
423 | ||
424 | #ifdef SX_PARANOIA_CHECK | |
425 | ||
426 | /* This doesn't work. Who's paranoid around here? Not me! */ | |
427 | ||
428 | static inline int sx_paranoia_check(struct sx_port const * port, | |
429 | char *name, const char *routine) | |
430 | { | |
431 | ||
432 | static const char *badmagic = | |
433 | KERN_ERR "sx: Warning: bad sx port magic number for device %s in %s\n"; | |
434 | static const char *badinfo = | |
435 | KERN_ERR "sx: Warning: null sx port for device %s in %s\n"; | |
436 | ||
437 | if (!port) { | |
438 | printk(badinfo, name, routine); | |
439 | return 1; | |
440 | } | |
441 | if (port->magic != SX_MAGIC) { | |
442 | printk(badmagic, name, routine); | |
443 | return 1; | |
444 | } | |
445 | ||
446 | return 0; | |
447 | } | |
448 | #else | |
449 | #define sx_paranoia_check(a,b,c) 0 | |
450 | #endif | |
451 | ||
452 | /* The timeouts. First try 30 times as fast as possible. Then give | |
453 | the card some time to breathe between accesses. (Otherwise the | |
454 | processor on the card might not be able to access its OWN bus... */ | |
455 | ||
456 | #define TIMEOUT_1 30 | |
457 | #define TIMEOUT_2 1000000 | |
458 | ||
459 | ||
460 | #ifdef DEBUG | |
461 | static void my_hd_io(void __iomem *p, int len) | |
462 | { | |
463 | int i, j, ch; | |
464 | unsigned char __iomem *addr = p; | |
465 | ||
466 | for (i=0;i<len;i+=16) { | |
467 | printk ("%p ", addr+i); | |
468 | for (j=0;j<16;j++) { | |
469 | printk ("%02x %s", readb(addr+j+i), (j==7)?" ":""); | |
470 | } | |
471 | for (j=0;j<16;j++) { | |
472 | ch = readb(addr+j+i); | |
473 | printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch)); | |
474 | } | |
475 | printk ("\n"); | |
476 | } | |
477 | } | |
478 | static void my_hd(void *p, int len) | |
479 | { | |
480 | int i, j, ch; | |
481 | unsigned char *addr = p; | |
482 | ||
483 | for (i=0;i<len;i+=16) { | |
484 | printk ("%p ", addr+i); | |
485 | for (j=0;j<16;j++) { | |
486 | printk ("%02x %s", addr[j+i], (j==7)?" ":""); | |
487 | } | |
488 | for (j=0;j<16;j++) { | |
489 | ch = addr[j+i]; | |
490 | printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch)); | |
491 | } | |
492 | printk ("\n"); | |
493 | } | |
494 | } | |
495 | #endif | |
496 | ||
497 | ||
498 | ||
499 | /* This needs redoing for Alpha -- REW -- Done. */ | |
500 | ||
501 | static inline void write_sx_byte (struct sx_board *board, int offset, u8 byte) | |
502 | { | |
503 | writeb (byte, board->base+offset); | |
504 | } | |
505 | ||
506 | static inline u8 read_sx_byte (struct sx_board *board, int offset) | |
507 | { | |
508 | return readb (board->base+offset); | |
509 | } | |
510 | ||
511 | ||
512 | static inline void write_sx_word (struct sx_board *board, int offset, u16 word) | |
513 | { | |
514 | writew (word, board->base+offset); | |
515 | } | |
516 | ||
517 | static inline u16 read_sx_word (struct sx_board *board, int offset) | |
518 | { | |
519 | return readw (board->base + offset); | |
520 | } | |
521 | ||
522 | ||
523 | static int sx_busy_wait_eq (struct sx_board *board, | |
524 | int offset, int mask, int correctval) | |
525 | { | |
526 | int i; | |
527 | ||
528 | func_enter (); | |
529 | ||
530 | for (i=0; i < TIMEOUT_1 ;i++) | |
531 | if ((read_sx_byte (board, offset) & mask) == correctval) { | |
532 | func_exit (); | |
533 | return 1; | |
534 | } | |
535 | ||
536 | for (i=0; i < TIMEOUT_2 ;i++) { | |
537 | if ((read_sx_byte (board, offset) & mask) == correctval) { | |
538 | func_exit (); | |
539 | return 1; | |
540 | } | |
541 | udelay (1); | |
542 | } | |
543 | ||
544 | func_exit (); | |
545 | return 0; | |
546 | } | |
547 | ||
548 | ||
549 | static int sx_busy_wait_neq (struct sx_board *board, | |
550 | int offset, int mask, int badval) | |
551 | { | |
552 | int i; | |
553 | ||
554 | func_enter (); | |
555 | ||
556 | for (i=0; i < TIMEOUT_1 ;i++) | |
557 | if ((read_sx_byte (board, offset) & mask) != badval) { | |
558 | func_exit (); | |
559 | return 1; | |
560 | } | |
561 | ||
562 | for (i=0; i < TIMEOUT_2 ;i++) { | |
563 | if ((read_sx_byte (board, offset) & mask) != badval) { | |
564 | func_exit (); | |
565 | return 1; | |
566 | } | |
567 | udelay (1); | |
568 | } | |
569 | ||
570 | func_exit (); | |
571 | return 0; | |
572 | } | |
573 | ||
574 | ||
575 | ||
576 | /* 5.6.4 of 6210028 r2.3 */ | |
577 | static int sx_reset (struct sx_board *board) | |
578 | { | |
579 | func_enter (); | |
580 | ||
581 | if (IS_SX_BOARD (board)) { | |
582 | ||
583 | write_sx_byte (board, SX_CONFIG, 0); | |
584 | write_sx_byte (board, SX_RESET, 1); /* Value doesn't matter */ | |
585 | ||
586 | if (!sx_busy_wait_eq (board, SX_RESET_STATUS, 1, 0)) { | |
587 | printk (KERN_INFO "sx: Card doesn't respond to reset....\n"); | |
588 | return 0; | |
589 | } | |
590 | } else if (IS_EISA_BOARD(board)) { | |
591 | outb(board->irq<<4, board->eisa_base+0xc02); | |
592 | } else if (IS_SI1_BOARD(board)) { | |
593 | write_sx_byte (board, SI1_ISA_RESET, 0); // value does not matter | |
594 | } else { | |
595 | /* Gory details of the SI/ISA board */ | |
596 | write_sx_byte (board, SI2_ISA_RESET, SI2_ISA_RESET_SET); | |
597 | write_sx_byte (board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_CLEAR); | |
598 | write_sx_byte (board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_CLEAR); | |
599 | write_sx_byte (board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_CLEAR); | |
600 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); | |
601 | write_sx_byte (board, SI2_ISA_IRQSET, SI2_ISA_IRQSET_CLEAR); | |
602 | } | |
603 | ||
604 | func_exit (); | |
605 | return 1; | |
606 | } | |
607 | ||
608 | ||
609 | /* This doesn't work on machines where "NULL" isn't 0 */ | |
610 | /* If you have one of those, someone will need to write | |
611 | the equivalent of this, which will amount to about 3 lines. I don't | |
612 | want to complicate this right now. -- REW | |
613 | (See, I do write comments every now and then :-) */ | |
614 | #define OFFSETOF(strct, elem) ((long)&(((struct strct *)NULL)->elem)) | |
615 | ||
616 | ||
617 | #define CHAN_OFFSET(port,elem) (port->ch_base + OFFSETOF (_SXCHANNEL, elem)) | |
618 | #define MODU_OFFSET(board,addr,elem) (addr + OFFSETOF (_SXMODULE, elem)) | |
619 | #define BRD_OFFSET(board,elem) (OFFSETOF (_SXCARD, elem)) | |
620 | ||
621 | ||
622 | #define sx_write_channel_byte(port, elem, val) \ | |
623 | write_sx_byte (port->board, CHAN_OFFSET (port, elem), val) | |
624 | ||
625 | #define sx_read_channel_byte(port, elem) \ | |
626 | read_sx_byte (port->board, CHAN_OFFSET (port, elem)) | |
627 | ||
628 | #define sx_write_channel_word(port, elem, val) \ | |
629 | write_sx_word (port->board, CHAN_OFFSET (port, elem), val) | |
630 | ||
631 | #define sx_read_channel_word(port, elem) \ | |
632 | read_sx_word (port->board, CHAN_OFFSET (port, elem)) | |
633 | ||
634 | ||
635 | #define sx_write_module_byte(board, addr, elem, val) \ | |
636 | write_sx_byte (board, MODU_OFFSET (board, addr, elem), val) | |
637 | ||
638 | #define sx_read_module_byte(board, addr, elem) \ | |
639 | read_sx_byte (board, MODU_OFFSET (board, addr, elem)) | |
640 | ||
641 | #define sx_write_module_word(board, addr, elem, val) \ | |
642 | write_sx_word (board, MODU_OFFSET (board, addr, elem), val) | |
643 | ||
644 | #define sx_read_module_word(board, addr, elem) \ | |
645 | read_sx_word (board, MODU_OFFSET (board, addr, elem)) | |
646 | ||
647 | ||
648 | #define sx_write_board_byte(board, elem, val) \ | |
649 | write_sx_byte (board, BRD_OFFSET (board, elem), val) | |
650 | ||
651 | #define sx_read_board_byte(board, elem) \ | |
652 | read_sx_byte (board, BRD_OFFSET (board, elem)) | |
653 | ||
654 | #define sx_write_board_word(board, elem, val) \ | |
655 | write_sx_word (board, BRD_OFFSET (board, elem), val) | |
656 | ||
657 | #define sx_read_board_word(board, elem) \ | |
658 | read_sx_word (board, BRD_OFFSET (board, elem)) | |
659 | ||
660 | ||
661 | static int sx_start_board (struct sx_board *board) | |
662 | { | |
663 | if (IS_SX_BOARD (board)) { | |
664 | write_sx_byte (board, SX_CONFIG, SX_CONF_BUSEN); | |
665 | } else if (IS_EISA_BOARD(board)) { | |
666 | write_sx_byte(board, SI2_EISA_OFF, SI2_EISA_VAL); | |
667 | outb((board->irq<<4)|4, board->eisa_base+0xc02); | |
668 | } else if (IS_SI1_BOARD(board)) { | |
669 | write_sx_byte (board, SI1_ISA_RESET_CLEAR, 0); | |
670 | write_sx_byte (board, SI1_ISA_INTCL, 0); | |
671 | } else { | |
672 | /* Don't bug me about the clear_set. | |
673 | I haven't the foggiest idea what it's about -- REW */ | |
674 | write_sx_byte (board, SI2_ISA_RESET, SI2_ISA_RESET_CLEAR); | |
675 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); | |
676 | } | |
677 | return 1; | |
678 | } | |
679 | ||
680 | #define SX_IRQ_REG_VAL(board) \ | |
681 | ((board->flags & SX_ISA_BOARD)?(board->irq << 4):0) | |
682 | ||
683 | /* Note. The SX register is write-only. Therefore, we have to enable the | |
684 | bus too. This is a no-op, if you don't mess with this driver... */ | |
685 | static int sx_start_interrupts (struct sx_board *board) | |
686 | { | |
687 | ||
688 | /* Don't call this with board->irq == 0 */ | |
689 | ||
690 | if (IS_SX_BOARD(board)) { | |
691 | write_sx_byte (board, SX_CONFIG, SX_IRQ_REG_VAL (board) | | |
692 | SX_CONF_BUSEN | | |
693 | SX_CONF_HOSTIRQ); | |
694 | } else if (IS_EISA_BOARD(board)) { | |
695 | inb(board->eisa_base+0xc03); | |
696 | } else if (IS_SI1_BOARD(board)) { | |
697 | write_sx_byte (board, SI1_ISA_INTCL,0); | |
698 | write_sx_byte (board, SI1_ISA_INTCL_CLEAR,0); | |
699 | } else { | |
700 | switch (board->irq) { | |
701 | case 11:write_sx_byte (board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_SET);break; | |
702 | case 12:write_sx_byte (board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_SET);break; | |
703 | case 15:write_sx_byte (board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_SET);break; | |
704 | default:printk (KERN_INFO "sx: SI/XIO card doesn't support interrupt %d.\n", | |
705 | board->irq); | |
706 | return 0; | |
707 | } | |
708 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); | |
709 | } | |
710 | ||
711 | return 1; | |
712 | } | |
713 | ||
714 | ||
715 | static int sx_send_command (struct sx_port *port, | |
716 | int command, int mask, int newstat) | |
717 | { | |
718 | func_enter2 (); | |
719 | write_sx_byte (port->board, CHAN_OFFSET (port, hi_hstat), command); | |
720 | func_exit (); | |
721 | return sx_busy_wait_eq (port->board, CHAN_OFFSET (port, hi_hstat), mask, newstat); | |
722 | } | |
723 | ||
724 | ||
725 | static char *mod_type_s (int module_type) | |
726 | { | |
727 | switch (module_type) { | |
728 | case TA4: return "TA4"; | |
729 | case TA8: return "TA8"; | |
730 | case TA4_ASIC: return "TA4_ASIC"; | |
731 | case TA8_ASIC: return "TA8_ASIC"; | |
732 | case MTA_CD1400:return "MTA_CD1400"; | |
733 | case SXDC: return "SXDC"; | |
734 | default:return "Unknown/invalid"; | |
735 | } | |
736 | } | |
737 | ||
738 | ||
739 | static char *pan_type_s (int pan_type) | |
740 | { | |
741 | switch (pan_type) { | |
742 | case MOD_RS232DB25: return "MOD_RS232DB25"; | |
743 | case MOD_RS232RJ45: return "MOD_RS232RJ45"; | |
744 | case MOD_RS422DB25: return "MOD_RS422DB25"; | |
745 | case MOD_PARALLEL: return "MOD_PARALLEL"; | |
746 | case MOD_2_RS232DB25: return "MOD_2_RS232DB25"; | |
747 | case MOD_2_RS232RJ45: return "MOD_2_RS232RJ45"; | |
748 | case MOD_2_RS422DB25: return "MOD_2_RS422DB25"; | |
749 | case MOD_RS232DB25MALE: return "MOD_RS232DB25MALE"; | |
750 | case MOD_2_PARALLEL: return "MOD_2_PARALLEL"; | |
751 | case MOD_BLANK: return "empty"; | |
752 | default:return "invalid"; | |
753 | } | |
754 | } | |
755 | ||
756 | ||
757 | static int mod_compat_type (int module_type) | |
758 | { | |
759 | return module_type >> 4; | |
760 | } | |
761 | ||
762 | static void sx_reconfigure_port(struct sx_port *port) | |
763 | { | |
764 | if (sx_read_channel_byte (port, hi_hstat) == HS_IDLE_OPEN) { | |
765 | if (sx_send_command (port, HS_CONFIG, -1, HS_IDLE_OPEN) != 1) { | |
766 | printk (KERN_WARNING "sx: Sent reconfigure command, but card didn't react.\n"); | |
767 | } | |
768 | } else { | |
769 | sx_dprintk (SX_DEBUG_TERMIOS, | |
770 | "sx: Not sending reconfigure: port isn't open (%02x).\n", | |
771 | sx_read_channel_byte (port, hi_hstat)); | |
772 | } | |
773 | } | |
774 | ||
775 | static void sx_setsignals (struct sx_port *port, int dtr, int rts) | |
776 | { | |
777 | int t; | |
778 | func_enter2 (); | |
779 | ||
780 | t = sx_read_channel_byte (port, hi_op); | |
781 | if (dtr >= 0) t = dtr? (t | OP_DTR): (t & ~OP_DTR); | |
782 | if (rts >= 0) t = rts? (t | OP_RTS): (t & ~OP_RTS); | |
783 | sx_write_channel_byte (port, hi_op, t); | |
784 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "setsignals: %d/%d\n", dtr, rts); | |
785 | ||
786 | func_exit (); | |
787 | } | |
788 | ||
789 | ||
790 | ||
791 | static int sx_getsignals (struct sx_port *port) | |
792 | { | |
793 | int i_stat,o_stat; | |
794 | ||
795 | o_stat = sx_read_channel_byte (port, hi_op); | |
796 | i_stat = sx_read_channel_byte (port, hi_ip); | |
797 | ||
798 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) %02x/%02x\n", | |
799 | (o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0, | |
800 | port->c_dcd, sx_get_CD (port), | |
801 | sx_read_channel_byte (port, hi_ip), | |
802 | sx_read_channel_byte (port, hi_state)); | |
803 | ||
804 | return (((o_stat & OP_DTR)?TIOCM_DTR:0) | | |
805 | ((o_stat & OP_RTS)?TIOCM_RTS:0) | | |
806 | ((i_stat & IP_CTS)?TIOCM_CTS:0) | | |
807 | ((i_stat & IP_DCD)?TIOCM_CAR:0) | | |
808 | ((i_stat & IP_DSR)?TIOCM_DSR:0) | | |
809 | ((i_stat & IP_RI)?TIOCM_RNG:0) | |
810 | ); | |
811 | } | |
812 | ||
813 | ||
814 | static void sx_set_baud (struct sx_port *port) | |
815 | { | |
816 | int t; | |
817 | ||
818 | if (port->board->ta_type == MOD_SXDC) { | |
819 | switch (port->gs.baud) { | |
820 | /* Save some typing work... */ | |
821 | #define e(x) case x:t= BAUD_ ## x ; break | |
822 | e(50);e(75);e(110);e(150);e(200);e(300);e(600); | |
823 | e(1200);e(1800);e(2000);e(2400);e(4800);e(7200); | |
824 | e(9600);e(14400);e(19200);e(28800);e(38400); | |
825 | e(56000);e(57600);e(64000);e(76800);e(115200); | |
826 | e(128000);e(150000);e(230400);e(256000);e(460800); | |
827 | e(921600); | |
828 | case 134 :t = BAUD_134_5; break; | |
829 | case 0 :t = -1; | |
830 | break; | |
831 | default: | |
832 | /* Can I return "invalid"? */ | |
833 | t = BAUD_9600; | |
834 | printk (KERN_INFO "sx: unsupported baud rate: %d.\n", port->gs.baud); | |
835 | break; | |
836 | } | |
837 | #undef e | |
838 | if (t > 0) { | |
839 | /* The baud rate is not set to 0, so we're enabeling DTR... -- REW */ | |
840 | sx_setsignals (port, 1, -1); | |
841 | /* XXX This is not TA & MTA compatible */ | |
842 | sx_write_channel_byte (port, hi_csr, 0xff); | |
843 | ||
844 | sx_write_channel_byte (port, hi_txbaud, t); | |
845 | sx_write_channel_byte (port, hi_rxbaud, t); | |
846 | } else { | |
847 | sx_setsignals (port, 0, -1); | |
848 | } | |
849 | } else { | |
850 | switch (port->gs.baud) { | |
851 | #define e(x) case x:t= CSR_ ## x ; break | |
852 | e(75);e(150);e(300);e(600);e(1200);e(2400);e(4800); | |
853 | e(1800);e(9600); | |
854 | e(19200);e(57600);e(38400); | |
855 | /* TA supports 110, but not 115200, MTA supports 115200, but not 110 */ | |
856 | case 110: | |
857 | if (port->board->ta_type == MOD_TA) { | |
858 | t = CSR_110; | |
859 | break; | |
860 | } else { | |
861 | t = CSR_9600; | |
862 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); | |
863 | break; | |
864 | } | |
865 | case 115200: | |
866 | if (port->board->ta_type == MOD_TA) { | |
867 | t = CSR_9600; | |
868 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); | |
869 | break; | |
870 | } else { | |
871 | t = CSR_110; | |
872 | break; | |
873 | } | |
874 | case 0 :t = -1; | |
875 | break; | |
876 | default: | |
877 | t = CSR_9600; | |
878 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); | |
879 | break; | |
880 | } | |
881 | #undef e | |
882 | if (t >= 0) { | |
883 | sx_setsignals (port, 1, -1); | |
884 | sx_write_channel_byte (port, hi_csr, t * 0x11); | |
885 | } else { | |
886 | sx_setsignals (port, 0, -1); | |
887 | } | |
888 | } | |
889 | } | |
890 | ||
891 | ||
892 | /* Simon Allen's version of this routine was 225 lines long. 85 is a lot | |
893 | better. -- REW */ | |
894 | ||
895 | static int sx_set_real_termios (void *ptr) | |
896 | { | |
897 | struct sx_port *port = ptr; | |
898 | ||
899 | func_enter2(); | |
900 | ||
901 | if (!port->gs.tty) | |
902 | return 0; | |
903 | ||
904 | /* What is this doing here? -- REW | |
905 | Ha! figured it out. It is to allow you to get DTR active again | |
906 | if you've dropped it with stty 0. Moved to set_baud, where it | |
907 | belongs (next to the drop dtr if baud == 0) -- REW */ | |
908 | /* sx_setsignals (port, 1, -1); */ | |
909 | ||
910 | sx_set_baud (port); | |
911 | ||
912 | #define CFLAG port->gs.tty->termios->c_cflag | |
913 | sx_write_channel_byte (port, hi_mr1, | |
914 | (C_PARENB (port->gs.tty)? MR1_WITH:MR1_NONE) | | |
915 | (C_PARODD (port->gs.tty)? MR1_ODD:MR1_EVEN) | | |
916 | (C_CRTSCTS(port->gs.tty)? MR1_RTS_RXFLOW:0) | | |
917 | (((CFLAG & CSIZE)==CS8) ? MR1_8_BITS:0) | | |
918 | (((CFLAG & CSIZE)==CS7) ? MR1_7_BITS:0) | | |
919 | (((CFLAG & CSIZE)==CS6) ? MR1_6_BITS:0) | | |
920 | (((CFLAG & CSIZE)==CS5) ? MR1_5_BITS:0) ); | |
921 | ||
922 | sx_write_channel_byte (port, hi_mr2, | |
923 | (C_CRTSCTS(port->gs.tty)?MR2_CTS_TXFLOW:0) | | |
924 | (C_CSTOPB (port->gs.tty)?MR2_2_STOP:MR2_1_STOP)); | |
925 | ||
926 | switch (CFLAG & CSIZE) { | |
927 | case CS8:sx_write_channel_byte (port, hi_mask, 0xff);break; | |
928 | case CS7:sx_write_channel_byte (port, hi_mask, 0x7f);break; | |
929 | case CS6:sx_write_channel_byte (port, hi_mask, 0x3f);break; | |
930 | case CS5:sx_write_channel_byte (port, hi_mask, 0x1f);break; | |
931 | default: | |
19dfe31c | 932 | printk (KERN_INFO "sx: Invalid wordsize: %u\n", CFLAG & CSIZE); |
1da177e4 LT |
933 | break; |
934 | } | |
935 | ||
936 | sx_write_channel_byte (port, hi_prtcl, | |
937 | (I_IXON (port->gs.tty)?SP_TXEN:0) | | |
938 | (I_IXOFF (port->gs.tty)?SP_RXEN:0) | | |
939 | (I_IXANY (port->gs.tty)?SP_TANY:0) | | |
940 | SP_DCEN); | |
941 | ||
942 | sx_write_channel_byte (port, hi_break, | |
943 | (I_IGNBRK(port->gs.tty)?BR_IGN:0 | | |
944 | I_BRKINT(port->gs.tty)?BR_INT:0)); | |
945 | ||
946 | sx_write_channel_byte (port, hi_txon, START_CHAR (port->gs.tty)); | |
947 | sx_write_channel_byte (port, hi_rxon, START_CHAR (port->gs.tty)); | |
948 | sx_write_channel_byte (port, hi_txoff, STOP_CHAR (port->gs.tty)); | |
949 | sx_write_channel_byte (port, hi_rxoff, STOP_CHAR (port->gs.tty)); | |
950 | ||
951 | sx_reconfigure_port(port); | |
952 | ||
953 | /* Tell line discipline whether we will do input cooking */ | |
954 | if(I_OTHER(port->gs.tty)) { | |
955 | clear_bit(TTY_HW_COOK_IN, &port->gs.tty->flags); | |
956 | } else { | |
957 | set_bit(TTY_HW_COOK_IN, &port->gs.tty->flags); | |
958 | } | |
19dfe31c | 959 | sx_dprintk (SX_DEBUG_TERMIOS, "iflags: %x(%d) ", |
1da177e4 LT |
960 | port->gs.tty->termios->c_iflag, |
961 | I_OTHER(port->gs.tty)); | |
962 | ||
963 | ||
964 | /* Tell line discipline whether we will do output cooking. | |
965 | * If OPOST is set and no other output flags are set then we can do output | |
966 | * processing. Even if only *one* other flag in the O_OTHER group is set | |
967 | * we do cooking in software. | |
968 | */ | |
969 | if(O_OPOST(port->gs.tty) && !O_OTHER(port->gs.tty)) { | |
970 | set_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags); | |
971 | } else { | |
972 | clear_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags); | |
973 | } | |
19dfe31c | 974 | sx_dprintk (SX_DEBUG_TERMIOS, "oflags: %x(%d)\n", |
1da177e4 LT |
975 | port->gs.tty->termios->c_oflag, |
976 | O_OTHER(port->gs.tty)); | |
977 | /* port->c_dcd = sx_get_CD (port); */ | |
978 | func_exit (); | |
979 | return 0; | |
980 | } | |
981 | ||
982 | ||
983 | ||
984 | /* ********************************************************************** * | |
985 | * the interrupt related routines * | |
986 | * ********************************************************************** */ | |
987 | ||
988 | /* Note: | |
989 | Other drivers use the macro "MIN" to calculate how much to copy. | |
990 | This has the disadvantage that it will evaluate parts twice. That's | |
991 | expensive when it's IO (and the compiler cannot optimize those away!). | |
992 | Moreover, I'm not sure that you're race-free. | |
993 | ||
994 | I assign a value, and then only allow the value to decrease. This | |
995 | is always safe. This makes the code a few lines longer, and you | |
996 | know I'm dead against that, but I think it is required in this | |
997 | case. */ | |
998 | ||
999 | ||
1000 | static void sx_transmit_chars (struct sx_port *port) | |
1001 | { | |
1002 | int c; | |
1003 | int tx_ip; | |
1004 | int txroom; | |
1005 | ||
1006 | func_enter2 (); | |
1007 | sx_dprintk (SX_DEBUG_TRANSMIT, "Port %p: transmit %d chars\n", | |
1008 | port, port->gs.xmit_cnt); | |
1009 | ||
1010 | if (test_and_set_bit (SX_PORT_TRANSMIT_LOCK, &port->locks)) { | |
1011 | return; | |
1012 | } | |
1013 | ||
1014 | while (1) { | |
1015 | c = port->gs.xmit_cnt; | |
1016 | ||
1017 | sx_dprintk (SX_DEBUG_TRANSMIT, "Copying %d ", c); | |
1018 | tx_ip = sx_read_channel_byte (port, hi_txipos); | |
1019 | ||
1020 | /* Took me 5 minutes to deduce this formula. | |
1021 | Luckily it is literally in the manual in section 6.5.4.3.5 */ | |
1022 | txroom = (sx_read_channel_byte (port, hi_txopos) - tx_ip - 1) & 0xff; | |
1023 | ||
1024 | /* Don't copy more bytes than there is room for in the buffer */ | |
1025 | if (c > txroom) | |
1026 | c = txroom; | |
1027 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%d) ", c, txroom ); | |
1028 | ||
1029 | /* Don't copy past the end of the hardware transmit buffer */ | |
1030 | if (c > 0x100 - tx_ip) | |
1031 | c = 0x100 - tx_ip; | |
1032 | ||
1033 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%d) ", c, 0x100-tx_ip ); | |
1034 | ||
1035 | /* Don't copy pas the end of the source buffer */ | |
1036 | if (c > SERIAL_XMIT_SIZE - port->gs.xmit_tail) | |
1037 | c = SERIAL_XMIT_SIZE - port->gs.xmit_tail; | |
1038 | ||
1039 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%ld) \n", | |
1040 | c, SERIAL_XMIT_SIZE- port->gs.xmit_tail); | |
1041 | ||
1042 | /* If for one reason or another, we can't copy more data, we're done! */ | |
1043 | if (c == 0) break; | |
1044 | ||
1045 | ||
1046 | memcpy_toio (port->board->base + CHAN_OFFSET(port,hi_txbuf) + tx_ip, | |
1047 | port->gs.xmit_buf + port->gs.xmit_tail, c); | |
1048 | ||
1049 | /* Update the pointer in the card */ | |
1050 | sx_write_channel_byte (port, hi_txipos, (tx_ip+c) & 0xff); | |
1051 | ||
1052 | /* Update the kernel buffer end */ | |
1053 | port->gs.xmit_tail = (port->gs.xmit_tail + c) & (SERIAL_XMIT_SIZE-1); | |
1054 | ||
1055 | /* This one last. (this is essential) | |
1056 | It would allow others to start putting more data into the buffer! */ | |
1057 | port->gs.xmit_cnt -= c; | |
1058 | } | |
1059 | ||
1060 | if (port->gs.xmit_cnt == 0) { | |
1061 | sx_disable_tx_interrupts (port); | |
1062 | } | |
1063 | ||
1064 | if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.tty) { | |
1065 | tty_wakeup(port->gs.tty); | |
1066 | sx_dprintk (SX_DEBUG_TRANSMIT, "Waking up.... ldisc (%d)....\n", | |
1067 | port->gs.wakeup_chars); | |
1068 | } | |
1069 | ||
1070 | clear_bit (SX_PORT_TRANSMIT_LOCK, &port->locks); | |
1071 | func_exit (); | |
1072 | } | |
1073 | ||
1074 | ||
1075 | /* Note the symmetry between receiving chars and transmitting them! | |
1076 | Note: The kernel should have implemented both a receive buffer and | |
1077 | a transmit buffer. */ | |
1078 | ||
1079 | /* Inlined: Called only once. Remove the inline when you add another call */ | |
1080 | static inline void sx_receive_chars (struct sx_port *port) | |
1081 | { | |
1082 | int c; | |
1083 | int rx_op; | |
1084 | struct tty_struct *tty; | |
1085 | int copied=0; | |
33f0f88f | 1086 | unsigned char *rp; |
1da177e4 LT |
1087 | |
1088 | func_enter2 (); | |
1089 | tty = port->gs.tty; | |
1090 | while (1) { | |
1091 | rx_op = sx_read_channel_byte (port, hi_rxopos); | |
1092 | c = (sx_read_channel_byte (port, hi_rxipos) - rx_op) & 0xff; | |
1093 | ||
1094 | sx_dprintk (SX_DEBUG_RECEIVE, "rxop=%d, c = %d.\n", rx_op, c); | |
1095 | ||
d904ffd6 MZ |
1096 | /* Don't copy past the end of the hardware receive buffer */ |
1097 | if (rx_op + c > 0x100) c = 0x100 - rx_op; | |
1098 | ||
1099 | sx_dprintk (SX_DEBUG_RECEIVE, "c = %d.\n", c); | |
1100 | ||
1da177e4 | 1101 | /* Don't copy more bytes than there is room for in the buffer */ |
33f0f88f AC |
1102 | |
1103 | c = tty_prepare_flip_string(tty, &rp, c); | |
1da177e4 LT |
1104 | |
1105 | sx_dprintk (SX_DEBUG_RECEIVE, "c = %d.\n", c); | |
1106 | ||
1da177e4 LT |
1107 | /* If for one reason or another, we can't copy more data, we're done! */ |
1108 | if (c == 0) break; | |
1109 | ||
1110 | sx_dprintk (SX_DEBUG_RECEIVE , "Copying over %d chars. First is %d at %lx\n", c, | |
1111 | read_sx_byte (port->board, CHAN_OFFSET(port,hi_rxbuf) + rx_op), | |
1112 | CHAN_OFFSET(port, hi_rxbuf)); | |
33f0f88f | 1113 | memcpy_fromio (rp, |
1da177e4 | 1114 | port->board->base + CHAN_OFFSET(port,hi_rxbuf) + rx_op, c); |
1da177e4 LT |
1115 | |
1116 | /* This one last. ( Not essential.) | |
1117 | It allows the card to start putting more data into the buffer! | |
1118 | Update the pointer in the card */ | |
1119 | sx_write_channel_byte (port, hi_rxopos, (rx_op + c) & 0xff); | |
1120 | ||
1121 | copied += c; | |
1122 | } | |
1123 | if (copied) { | |
1124 | struct timeval tv; | |
1125 | ||
1126 | do_gettimeofday (&tv); | |
1127 | sx_dprintk (SX_DEBUG_RECEIVE, | |
1128 | "pushing flipq port %d (%3d chars): %d.%06d (%d/%d)\n", | |
1129 | port->line, copied, | |
1130 | (int) (tv.tv_sec % 60), (int)tv.tv_usec, tty->raw, tty->real_raw); | |
1131 | ||
1132 | /* Tell the rest of the system the news. Great news. New characters! */ | |
1133 | tty_flip_buffer_push (tty); | |
1134 | /* tty_schedule_flip (tty); */ | |
1135 | } | |
1136 | ||
1137 | func_exit (); | |
1138 | } | |
1139 | ||
1140 | /* Inlined: it is called only once. Remove the inline if you add another | |
1141 | call */ | |
1142 | static inline void sx_check_modem_signals (struct sx_port *port) | |
1143 | { | |
1144 | int hi_state; | |
1145 | int c_dcd; | |
1146 | ||
1147 | hi_state = sx_read_channel_byte (port, hi_state); | |
1148 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n", | |
1149 | port->c_dcd, sx_get_CD (port)); | |
1150 | ||
1151 | if (hi_state & ST_BREAK) { | |
1152 | hi_state &= ~ST_BREAK; | |
1153 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "got a break.\n"); | |
1154 | sx_write_channel_byte (port, hi_state, hi_state); | |
1155 | gs_got_break (&port->gs); | |
1156 | } | |
1157 | if (hi_state & ST_DCD) { | |
1158 | hi_state &= ~ST_DCD; | |
1159 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n"); | |
1160 | sx_write_channel_byte (port, hi_state, hi_state); | |
1161 | c_dcd = sx_get_CD (port); | |
1162 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd); | |
1163 | if (c_dcd != port->c_dcd) { | |
1164 | port->c_dcd = c_dcd; | |
1165 | if (sx_get_CD (port)) { | |
1166 | /* DCD went UP */ | |
1167 | if ((sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED) && | |
1168 | !(port->gs.tty->termios->c_cflag & CLOCAL) ) { | |
1169 | /* Are we blocking in open?*/ | |
1170 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD active, unblocking open\n"); | |
1171 | wake_up_interruptible(&port->gs.open_wait); | |
1172 | } else { | |
1173 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD raised. Ignoring.\n"); | |
1174 | } | |
1175 | } else { | |
1176 | /* DCD went down! */ | |
1177 | if (!(port->gs.tty->termios->c_cflag & CLOCAL) ) { | |
1178 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD dropped. hanging up....\n"); | |
1179 | tty_hangup (port->gs.tty); | |
1180 | } else { | |
1181 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD dropped. ignoring.\n"); | |
1182 | } | |
1183 | } | |
1184 | } else { | |
1185 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "Hmmm. card told us DCD changed, but it didn't.\n"); | |
1186 | } | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | ||
1191 | /* This is what an interrupt routine should look like. | |
1192 | * Small, elegant, clear. | |
1193 | */ | |
1194 | ||
7d12e780 | 1195 | static irqreturn_t sx_interrupt (int irq, void *ptr) |
1da177e4 LT |
1196 | { |
1197 | struct sx_board *board = ptr; | |
1198 | struct sx_port *port; | |
1199 | int i; | |
1200 | ||
1201 | func_enter (); | |
1202 | sx_dprintk (SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n", irq, board->irq); | |
1203 | ||
1204 | /* AAargh! The order in which to do these things is essential and | |
1205 | not trivial. | |
1206 | ||
1207 | - Rate limit goes before "recursive". Otherwise a series of | |
1208 | recursive calls will hang the machine in the interrupt routine. | |
1209 | ||
1210 | - hardware twiddling goes before "recursive". Otherwise when we | |
1211 | poll the card, and a recursive interrupt happens, we won't | |
1212 | ack the card, so it might keep on interrupting us. (especially | |
1213 | level sensitive interrupt systems like PCI). | |
1214 | ||
1215 | - Rate limit goes before hardware twiddling. Otherwise we won't | |
1216 | catch a card that has gone bonkers. | |
1217 | ||
1218 | - The "initialized" test goes after the hardware twiddling. Otherwise | |
1219 | the card will stick us in the interrupt routine again. | |
1220 | ||
1221 | - The initialized test goes before recursive. | |
1222 | */ | |
1223 | ||
1224 | ||
1225 | ||
1226 | #ifdef IRQ_RATE_LIMIT | |
1227 | /* Aaargh! I'm ashamed. This costs more lines-of-code than the | |
1228 | actual interrupt routine!. (Well, used to when I wrote that comment) */ | |
1229 | { | |
1230 | static int lastjif; | |
1231 | static int nintr=0; | |
1232 | ||
1233 | if (lastjif == jiffies) { | |
1234 | if (++nintr > IRQ_RATE_LIMIT) { | |
1235 | free_irq (board->irq, board); | |
1236 | printk (KERN_ERR "sx: Too many interrupts. Turning off interrupt %d.\n", | |
1237 | board->irq); | |
1238 | } | |
1239 | } else { | |
1240 | lastjif = jiffies; | |
1241 | nintr = 0; | |
1242 | } | |
1243 | } | |
1244 | #endif | |
1245 | ||
1246 | ||
1247 | if (board->irq == irq) { | |
1248 | /* Tell the card we've noticed the interrupt. */ | |
1249 | ||
1250 | sx_write_board_word (board, cc_int_pending, 0); | |
1251 | if (IS_SX_BOARD (board)) { | |
1252 | write_sx_byte (board, SX_RESET_IRQ, 1); | |
1253 | } else if (IS_EISA_BOARD(board)) { | |
1254 | inb(board->eisa_base+0xc03); | |
1255 | write_sx_word(board, 8, 0); | |
1256 | } else { | |
1257 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); | |
1258 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); | |
1259 | } | |
1260 | } | |
1261 | ||
1262 | if (!sx_initialized) | |
1263 | return IRQ_HANDLED; | |
1264 | if (!(board->flags & SX_BOARD_INITIALIZED)) | |
1265 | return IRQ_HANDLED; | |
1266 | ||
1267 | if (test_and_set_bit (SX_BOARD_INTR_LOCK, &board->locks)) { | |
1268 | printk (KERN_ERR "Recursive interrupt! (%d)\n", board->irq); | |
1269 | return IRQ_HANDLED; | |
1270 | } | |
1271 | ||
1272 | for (i=0;i<board->nports;i++) { | |
1273 | port = &board->ports[i]; | |
1274 | if (port->gs.flags & GS_ACTIVE) { | |
1275 | if (sx_read_channel_byte (port, hi_state)) { | |
1276 | sx_dprintk (SX_DEBUG_INTERRUPTS, | |
1277 | "Port %d: modem signal change?... \n", i); | |
1278 | sx_check_modem_signals (port); | |
1279 | } | |
1280 | if (port->gs.xmit_cnt) { | |
1281 | sx_transmit_chars (port); | |
1282 | } | |
1283 | if (!(port->gs.flags & SX_RX_THROTTLE)) { | |
1284 | sx_receive_chars (port); | |
1285 | } | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | clear_bit (SX_BOARD_INTR_LOCK, &board->locks); | |
1290 | ||
1291 | sx_dprintk (SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n", irq, board->irq); | |
1292 | func_exit (); | |
1293 | return IRQ_HANDLED; | |
1294 | } | |
1295 | ||
1296 | ||
1297 | static void sx_pollfunc (unsigned long data) | |
1298 | { | |
1299 | struct sx_board *board = (struct sx_board *) data; | |
1300 | ||
1301 | func_enter (); | |
1302 | ||
7d12e780 | 1303 | sx_interrupt (0, board); |
1da177e4 LT |
1304 | |
1305 | init_timer(&board->timer); | |
1306 | ||
1307 | board->timer.expires = jiffies + sx_poll; | |
1308 | add_timer (&board->timer); | |
1309 | func_exit (); | |
1310 | } | |
1311 | ||
1312 | ||
1313 | ||
1314 | /* ********************************************************************** * | |
1315 | * Here are the routines that actually * | |
1316 | * interface with the generic_serial driver * | |
1317 | * ********************************************************************** */ | |
1318 | ||
1319 | /* Ehhm. I don't know how to fiddle with interrupts on the SX card. --REW */ | |
1320 | /* Hmm. Ok I figured it out. You don't. */ | |
1321 | ||
1322 | static void sx_disable_tx_interrupts (void * ptr) | |
1323 | { | |
1324 | struct sx_port *port = ptr; | |
1325 | func_enter2(); | |
1326 | ||
1327 | port->gs.flags &= ~GS_TX_INTEN; | |
1328 | ||
1329 | func_exit(); | |
1330 | } | |
1331 | ||
1332 | ||
1333 | static void sx_enable_tx_interrupts (void * ptr) | |
1334 | { | |
1335 | struct sx_port *port = ptr; | |
1336 | int data_in_buffer; | |
1337 | func_enter2(); | |
1338 | ||
1339 | /* First transmit the characters that we're supposed to */ | |
1340 | sx_transmit_chars (port); | |
1341 | ||
1342 | /* The sx card will never interrupt us if we don't fill the buffer | |
1343 | past 25%. So we keep considering interrupts off if that's the case. */ | |
1344 | data_in_buffer = (sx_read_channel_byte (port, hi_txipos) - | |
1345 | sx_read_channel_byte (port, hi_txopos)) & 0xff; | |
1346 | ||
1347 | /* XXX Must be "HIGH_WATER" for SI card according to doc. */ | |
1348 | if (data_in_buffer < LOW_WATER) | |
1349 | port->gs.flags &= ~GS_TX_INTEN; | |
1350 | ||
1351 | func_exit(); | |
1352 | } | |
1353 | ||
1354 | ||
1355 | static void sx_disable_rx_interrupts (void * ptr) | |
1356 | { | |
1357 | /* struct sx_port *port = ptr; */ | |
1358 | func_enter(); | |
1359 | ||
1360 | func_exit(); | |
1361 | } | |
1362 | ||
1363 | static void sx_enable_rx_interrupts (void * ptr) | |
1364 | { | |
1365 | /* struct sx_port *port = ptr; */ | |
1366 | func_enter(); | |
1367 | ||
1368 | func_exit(); | |
1369 | } | |
1370 | ||
1371 | ||
1372 | /* Jeez. Isn't this simple? */ | |
1373 | static int sx_get_CD (void * ptr) | |
1374 | { | |
1375 | struct sx_port *port = ptr; | |
1376 | func_enter2(); | |
1377 | ||
1378 | func_exit(); | |
1379 | return ((sx_read_channel_byte (port, hi_ip) & IP_DCD) != 0); | |
1380 | } | |
1381 | ||
1382 | ||
1383 | /* Jeez. Isn't this simple? */ | |
1384 | static int sx_chars_in_buffer (void * ptr) | |
1385 | { | |
1386 | struct sx_port *port = ptr; | |
1387 | func_enter2(); | |
1388 | ||
1389 | func_exit(); | |
1390 | return ((sx_read_channel_byte (port, hi_txipos) - | |
1391 | sx_read_channel_byte (port, hi_txopos)) & 0xff); | |
1392 | } | |
1393 | ||
1394 | ||
1395 | static void sx_shutdown_port (void * ptr) | |
1396 | { | |
1397 | struct sx_port *port = ptr; | |
1398 | ||
1399 | func_enter(); | |
1400 | ||
1401 | port->gs.flags &= ~ GS_ACTIVE; | |
1402 | if (port->gs.tty && (port->gs.tty->termios->c_cflag & HUPCL)) { | |
1403 | sx_setsignals (port, 0, 0); | |
1404 | sx_reconfigure_port(port); | |
1405 | } | |
1406 | ||
1407 | func_exit(); | |
1408 | } | |
1409 | ||
1410 | ||
1411 | ||
1412 | ||
1413 | ||
1414 | /* ********************************************************************** * | |
1415 | * Here are the routines that actually * | |
1416 | * interface with the rest of the system * | |
1417 | * ********************************************************************** */ | |
1418 | ||
1419 | static int sx_open (struct tty_struct * tty, struct file * filp) | |
1420 | { | |
1421 | struct sx_port *port; | |
1422 | int retval, line; | |
1423 | unsigned long flags; | |
1424 | ||
1425 | func_enter(); | |
1426 | ||
1427 | if (!sx_initialized) { | |
1428 | return -EIO; | |
1429 | } | |
1430 | ||
1431 | line = tty->index; | |
1432 | sx_dprintk (SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, np=%d)\n", | |
1433 | current->pid, line, tty, current->signal->tty, sx_nports); | |
1434 | ||
1435 | if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports)) | |
1436 | return -ENODEV; | |
1437 | ||
1438 | port = & sx_ports[line]; | |
1439 | port->c_dcd = 0; /* Make sure that the first interrupt doesn't detect a | |
1440 | 1 -> 0 transition. */ | |
1441 | ||
1442 | ||
1443 | sx_dprintk (SX_DEBUG_OPEN, "port = %p c_dcd = %d\n", port, port->c_dcd); | |
1444 | ||
1445 | spin_lock_irqsave(&port->gs.driver_lock, flags); | |
1446 | ||
1447 | tty->driver_data = port; | |
1448 | port->gs.tty = tty; | |
1449 | port->gs.count++; | |
1450 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); | |
1451 | ||
1452 | sx_dprintk (SX_DEBUG_OPEN, "starting port\n"); | |
1453 | ||
1454 | /* | |
1455 | * Start up serial port | |
1456 | */ | |
1457 | retval = gs_init_port(&port->gs); | |
1458 | sx_dprintk (SX_DEBUG_OPEN, "done gs_init\n"); | |
1459 | if (retval) { | |
1460 | port->gs.count--; | |
1461 | return retval; | |
1462 | } | |
1463 | ||
1464 | port->gs.flags |= GS_ACTIVE; | |
1465 | if (port->gs.count <= 1) | |
1466 | sx_setsignals (port, 1,1); | |
1467 | ||
1468 | #if 0 | |
1469 | if (sx_debug & SX_DEBUG_OPEN) | |
1470 | my_hd (port, sizeof (*port)); | |
1471 | #else | |
1472 | if (sx_debug & SX_DEBUG_OPEN) | |
1473 | my_hd_io (port->board->base + port->ch_base, sizeof (*port)); | |
1474 | #endif | |
1475 | ||
1476 | if (port->gs.count <= 1) { | |
1477 | if (sx_send_command (port, HS_LOPEN, -1, HS_IDLE_OPEN) != 1) { | |
1478 | printk (KERN_ERR "sx: Card didn't respond to LOPEN command.\n"); | |
1479 | spin_lock_irqsave(&port->gs.driver_lock, flags); | |
1480 | port->gs.count--; | |
1481 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); | |
1482 | return -EIO; | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | retval = gs_block_til_ready(port, filp); | |
1487 | sx_dprintk (SX_DEBUG_OPEN, "Block til ready returned %d. Count=%d\n", | |
1488 | retval, port->gs.count); | |
1489 | ||
1490 | if (retval) { | |
1491 | /* | |
1492 | * Don't lower gs.count here because sx_close() will be called later | |
1493 | */ | |
1494 | ||
1495 | return retval; | |
1496 | } | |
1497 | /* tty->low_latency = 1; */ | |
1498 | ||
1499 | port->c_dcd = sx_get_CD (port); | |
1500 | sx_dprintk (SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd); | |
1501 | ||
1502 | func_exit(); | |
1503 | return 0; | |
1504 | ||
1505 | } | |
1506 | ||
1507 | ||
1508 | static void sx_close (void *ptr) | |
1509 | { | |
1510 | struct sx_port *port = ptr; | |
1511 | /* Give the port 5 seconds to close down. */ | |
1512 | int to = 5 * HZ; | |
1513 | ||
1514 | func_enter (); | |
1515 | ||
1516 | sx_setsignals (port, 0, 0); | |
1517 | sx_reconfigure_port(port); | |
1518 | sx_send_command (port, HS_CLOSE, 0, 0); | |
1519 | ||
1520 | while (to-- && (sx_read_channel_byte (port, hi_hstat) != HS_IDLE_CLOSED)) | |
1521 | if (msleep_interruptible(10)) | |
1522 | break; | |
1523 | if (sx_read_channel_byte (port, hi_hstat) != HS_IDLE_CLOSED) { | |
1524 | if (sx_send_command (port, HS_FORCE_CLOSED, -1, HS_IDLE_CLOSED) != 1) { | |
1525 | printk (KERN_ERR | |
1526 | "sx: sent the force_close command, but card didn't react\n"); | |
1527 | } else | |
1528 | sx_dprintk (SX_DEBUG_CLOSE, "sent the force_close command.\n"); | |
1529 | } | |
1530 | ||
1531 | sx_dprintk (SX_DEBUG_CLOSE, "waited %d jiffies for close. count=%d\n", | |
1532 | 5 * HZ - to - 1, port->gs.count); | |
1533 | ||
1534 | if(port->gs.count) { | |
1535 | sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n", port->gs.count); | |
1536 | //printk ("%s SETTING port count to zero: %p count: %d\n", __FUNCTION__, port, port->gs.count); | |
1537 | //port->gs.count = 0; | |
1538 | } | |
1539 | ||
1540 | func_exit (); | |
1541 | } | |
1542 | ||
1543 | ||
1544 | ||
1545 | /* This is relatively thorough. But then again it is only 20 lines. */ | |
1546 | #define MARCHUP for (i=min;i<max;i++) | |
1547 | #define MARCHDOWN for (i=max-1;i>=min;i--) | |
1548 | #define W0 write_sx_byte (board, i, 0x55) | |
1549 | #define W1 write_sx_byte (board, i, 0xaa) | |
1550 | #define R0 if (read_sx_byte (board, i) != 0x55) return 1 | |
1551 | #define R1 if (read_sx_byte (board, i) != 0xaa) return 1 | |
1552 | ||
1553 | /* This memtest takes a human-noticable time. You normally only do it | |
1554 | once a boot, so I guess that it is worth it. */ | |
1555 | static int do_memtest (struct sx_board *board, int min, int max) | |
1556 | { | |
1557 | int i; | |
1558 | ||
1559 | /* This is a marchb. Theoretically, marchb catches much more than | |
1560 | simpler tests. In practise, the longer test just catches more | |
1561 | intermittent errors. -- REW | |
1562 | (For the theory behind memory testing see: | |
1563 | Testing Semiconductor Memories by A.J. van de Goor.) */ | |
1564 | MARCHUP {W0;} | |
1565 | MARCHUP {R0;W1;R1;W0;R0;W1;} | |
1566 | MARCHUP {R1;W0;W1;} | |
1567 | MARCHDOWN {R1;W0;W1;W0;} | |
1568 | MARCHDOWN {R0;W1;W0;} | |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | ||
1574 | #undef MARCHUP | |
1575 | #undef MARCHDOWN | |
1576 | #undef W0 | |
1577 | #undef W1 | |
1578 | #undef R0 | |
1579 | #undef R1 | |
1580 | ||
1581 | #define MARCHUP for (i=min;i<max;i+=2) | |
1582 | #define MARCHDOWN for (i=max-1;i>=min;i-=2) | |
1583 | #define W0 write_sx_word (board, i, 0x55aa) | |
1584 | #define W1 write_sx_word (board, i, 0xaa55) | |
1585 | #define R0 if (read_sx_word (board, i) != 0x55aa) return 1 | |
1586 | #define R1 if (read_sx_word (board, i) != 0xaa55) return 1 | |
1587 | ||
1588 | #if 0 | |
1589 | /* This memtest takes a human-noticable time. You normally only do it | |
1590 | once a boot, so I guess that it is worth it. */ | |
1591 | static int do_memtest_w (struct sx_board *board, int min, int max) | |
1592 | { | |
1593 | int i; | |
1594 | ||
1595 | MARCHUP {W0;} | |
1596 | MARCHUP {R0;W1;R1;W0;R0;W1;} | |
1597 | MARCHUP {R1;W0;W1;} | |
1598 | MARCHDOWN {R1;W0;W1;W0;} | |
1599 | MARCHDOWN {R0;W1;W0;} | |
1600 | ||
1601 | return 0; | |
1602 | } | |
1603 | #endif | |
1604 | ||
1605 | ||
1606 | static int sx_fw_ioctl (struct inode *inode, struct file *filp, | |
1607 | unsigned int cmd, unsigned long arg) | |
1608 | { | |
1609 | int rc = 0; | |
1610 | int __user *descr = (int __user *)arg; | |
1611 | int i; | |
1612 | static struct sx_board *board = NULL; | |
1613 | int nbytes, offset; | |
1614 | unsigned long data; | |
1615 | char *tmp; | |
1616 | ||
1617 | func_enter(); | |
1618 | ||
1619 | #if 0 | |
1620 | /* Removed superuser check: Sysops can use the permissions on the device | |
1621 | file to restrict access. Recommendation: Root only. (root.root 600) */ | |
1622 | if (!capable(CAP_SYS_ADMIN)) { | |
1623 | return -EPERM; | |
1624 | } | |
1625 | #endif | |
1626 | ||
1627 | sx_dprintk (SX_DEBUG_FIRMWARE, "IOCTL %x: %lx\n", cmd, arg); | |
1628 | ||
1629 | if (!board) board = &boards[0]; | |
1630 | if (board->flags & SX_BOARD_PRESENT) { | |
1631 | sx_dprintk (SX_DEBUG_FIRMWARE, "Board present! (%x)\n", | |
1632 | board->flags); | |
1633 | } else { | |
1634 | sx_dprintk (SX_DEBUG_FIRMWARE, "Board not present! (%x) all:", | |
1635 | board->flags); | |
1636 | for (i=0;i< SX_NBOARDS;i++) | |
1637 | sx_dprintk (SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags); | |
1638 | sx_dprintk (SX_DEBUG_FIRMWARE, "\n"); | |
1639 | return -EIO; | |
1640 | } | |
1641 | ||
1642 | switch (cmd) { | |
1643 | case SXIO_SET_BOARD: | |
1644 | sx_dprintk (SX_DEBUG_FIRMWARE, "set board to %ld\n", arg); | |
1645 | if (arg >= SX_NBOARDS) return -EIO; | |
1646 | sx_dprintk (SX_DEBUG_FIRMWARE, "not out of range\n"); | |
1647 | if (!(boards[arg].flags & SX_BOARD_PRESENT)) return -EIO; | |
1648 | sx_dprintk (SX_DEBUG_FIRMWARE, ".. and present!\n"); | |
1649 | board = &boards[arg]; | |
1650 | break; | |
1651 | case SXIO_GET_TYPE: | |
1652 | rc = -ENOENT; /* If we manage to miss one, return error. */ | |
1653 | if (IS_SX_BOARD (board)) rc = SX_TYPE_SX; | |
1654 | if (IS_CF_BOARD (board)) rc = SX_TYPE_CF; | |
1655 | if (IS_SI_BOARD (board)) rc = SX_TYPE_SI; | |
1656 | if (IS_SI1_BOARD (board)) rc = SX_TYPE_SI; | |
1657 | if (IS_EISA_BOARD (board)) rc = SX_TYPE_SI; | |
1658 | sx_dprintk (SX_DEBUG_FIRMWARE, "returning type= %d\n", rc); | |
1659 | break; | |
1660 | case SXIO_DO_RAMTEST: | |
1661 | if (sx_initialized) /* Already initialized: better not ramtest the board. */ | |
1662 | return -EPERM; | |
1663 | if (IS_SX_BOARD (board)) { | |
1664 | rc = do_memtest (board, 0, 0x7000); | |
1665 | if (!rc) rc = do_memtest (board, 0, 0x7000); | |
1666 | /*if (!rc) rc = do_memtest_w (board, 0, 0x7000);*/ | |
1667 | } else { | |
1668 | rc = do_memtest (board, 0, 0x7ff8); | |
1669 | /* if (!rc) rc = do_memtest_w (board, 0, 0x7ff8); */ | |
1670 | } | |
1671 | sx_dprintk (SX_DEBUG_FIRMWARE, "returning memtest result= %d\n", rc); | |
1672 | break; | |
1673 | case SXIO_DOWNLOAD: | |
1674 | if (sx_initialized) /* Already initialized */ | |
1675 | return -EEXIST; | |
1676 | if (!sx_reset (board)) | |
1677 | return -EIO; | |
1678 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); | |
1679 | ||
1680 | tmp = kmalloc (SX_CHUNK_SIZE, GFP_USER); | |
1681 | if (!tmp) return -ENOMEM; | |
1682 | get_user (nbytes, descr++); | |
1683 | get_user (offset, descr++); | |
1684 | get_user (data, descr++); | |
1685 | while (nbytes && data) { | |
1686 | for (i=0;i<nbytes;i += SX_CHUNK_SIZE) { | |
1687 | if (copy_from_user(tmp, (char __user *)data+i, | |
1688 | (i + SX_CHUNK_SIZE > | |
1689 | nbytes) ? nbytes - i : | |
1690 | SX_CHUNK_SIZE)) { | |
1691 | kfree (tmp); | |
1692 | return -EFAULT; | |
1693 | } | |
1694 | memcpy_toio(board->base2 + offset + i, tmp, | |
1695 | (i+SX_CHUNK_SIZE>nbytes)?nbytes-i:SX_CHUNK_SIZE); | |
1696 | } | |
1697 | ||
1698 | get_user (nbytes, descr++); | |
1699 | get_user (offset, descr++); | |
1700 | get_user (data, descr++); | |
1701 | } | |
1702 | kfree (tmp); | |
1703 | sx_nports += sx_init_board (board); | |
1704 | rc = sx_nports; | |
1705 | break; | |
1706 | case SXIO_INIT: | |
1707 | if (sx_initialized) /* Already initialized */ | |
1708 | return -EEXIST; | |
1709 | /* This is not allowed until all boards are initialized... */ | |
1710 | for (i=0;i<SX_NBOARDS;i++) { | |
1711 | if ( (boards[i].flags & SX_BOARD_PRESENT) && | |
1712 | !(boards[i].flags & SX_BOARD_INITIALIZED)) | |
1713 | return -EIO; | |
1714 | } | |
1715 | for (i=0;i<SX_NBOARDS;i++) | |
1716 | if (!(boards[i].flags & SX_BOARD_PRESENT)) break; | |
1717 | ||
1718 | sx_dprintk (SX_DEBUG_FIRMWARE, "initing portstructs, %d boards, " | |
1719 | "%d channels, first board: %d ports\n", | |
1720 | i, sx_nports, boards[0].nports); | |
1721 | rc = sx_init_portstructs (i, sx_nports); | |
1722 | sx_init_drivers (); | |
1723 | if (rc >= 0) | |
1724 | sx_initialized++; | |
1725 | break; | |
1726 | case SXIO_SETDEBUG: | |
1727 | sx_debug = arg; | |
1728 | break; | |
1729 | case SXIO_GETDEBUG: | |
1730 | rc = sx_debug; | |
1731 | break; | |
1732 | case SXIO_GETGSDEBUG: | |
1733 | case SXIO_SETGSDEBUG: | |
1734 | rc = -EINVAL; | |
1735 | break; | |
1736 | case SXIO_GETNPORTS: | |
1737 | rc = sx_nports; | |
1738 | break; | |
1739 | default: | |
1740 | printk (KERN_WARNING "Unknown ioctl on firmware device (%x).\n", cmd); | |
1741 | break; | |
1742 | } | |
1743 | func_exit (); | |
1744 | return rc; | |
1745 | } | |
1746 | ||
1747 | ||
1748 | static void sx_break (struct tty_struct * tty, int flag) | |
1749 | { | |
1750 | struct sx_port *port = tty->driver_data; | |
1751 | int rv; | |
1752 | ||
1753 | func_enter (); | |
1754 | ||
1755 | if (flag) | |
1756 | rv = sx_send_command (port, HS_START, -1, HS_IDLE_BREAK); | |
1757 | else | |
1758 | rv = sx_send_command (port, HS_STOP, -1, HS_IDLE_OPEN); | |
1759 | if (rv != 1) printk (KERN_ERR "sx: couldn't send break (%x).\n", | |
1760 | read_sx_byte (port->board, CHAN_OFFSET (port, hi_hstat))); | |
1761 | ||
1762 | func_exit (); | |
1763 | } | |
1764 | ||
1765 | ||
1766 | static int sx_tiocmget(struct tty_struct *tty, struct file *file) | |
1767 | { | |
1768 | struct sx_port *port = tty->driver_data; | |
1769 | return sx_getsignals(port); | |
1770 | } | |
1771 | ||
1772 | static int sx_tiocmset(struct tty_struct *tty, struct file *file, | |
1773 | unsigned int set, unsigned int clear) | |
1774 | { | |
1775 | struct sx_port *port = tty->driver_data; | |
1776 | int rts = -1, dtr = -1; | |
1777 | ||
1778 | if (set & TIOCM_RTS) | |
1779 | rts = 1; | |
1780 | if (set & TIOCM_DTR) | |
1781 | dtr = 1; | |
1782 | if (clear & TIOCM_RTS) | |
1783 | rts = 0; | |
1784 | if (clear & TIOCM_DTR) | |
1785 | dtr = 0; | |
1786 | ||
1787 | sx_setsignals(port, dtr, rts); | |
1788 | sx_reconfigure_port(port); | |
1789 | return 0; | |
1790 | } | |
1791 | ||
1792 | static int sx_ioctl (struct tty_struct * tty, struct file * filp, | |
1793 | unsigned int cmd, unsigned long arg) | |
1794 | { | |
1795 | int rc; | |
1796 | struct sx_port *port = tty->driver_data; | |
1797 | void __user *argp = (void __user *)arg; | |
1798 | int ival; | |
1799 | ||
1800 | /* func_enter2(); */ | |
1801 | ||
1802 | rc = 0; | |
1803 | switch (cmd) { | |
1804 | case TIOCGSOFTCAR: | |
1805 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), | |
1806 | (unsigned __user *) argp); | |
1807 | break; | |
1808 | case TIOCSSOFTCAR: | |
1809 | if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) { | |
1810 | tty->termios->c_cflag = | |
1811 | (tty->termios->c_cflag & ~CLOCAL) | | |
1812 | (ival ? CLOCAL : 0); | |
1813 | } | |
1814 | break; | |
1815 | case TIOCGSERIAL: | |
1816 | rc = gs_getserial(&port->gs, argp); | |
1817 | break; | |
1818 | case TIOCSSERIAL: | |
1819 | rc = gs_setserial(&port->gs, argp); | |
1820 | break; | |
1821 | default: | |
1822 | rc = -ENOIOCTLCMD; | |
1823 | break; | |
1824 | } | |
1825 | ||
1826 | /* func_exit(); */ | |
1827 | return rc; | |
1828 | } | |
1829 | ||
1830 | ||
1831 | /* The throttle/unthrottle scheme for the Specialix card is different | |
1832 | * from other drivers and deserves some explanation. | |
1833 | * The Specialix hardware takes care of XON/XOFF | |
1834 | * and CTS/RTS flow control itself. This means that all we have to | |
1835 | * do when signalled by the upper tty layer to throttle/unthrottle is | |
1836 | * to make a note of it here. When we come to read characters from the | |
1837 | * rx buffers on the card (sx_receive_chars()) we look to see if the | |
1838 | * upper layer can accept more (as noted here in sx_rx_throt[]). | |
1839 | * If it can't we simply don't remove chars from the cards buffer. | |
1840 | * When the tty layer can accept chars, we again note that here and when | |
1841 | * sx_receive_chars() is called it will remove them from the cards buffer. | |
1842 | * The card will notice that a ports buffer has drained below some low | |
1843 | * water mark and will unflow control the line itself, using whatever | |
1844 | * flow control scheme is in use for that port. -- Simon Allen | |
1845 | */ | |
1846 | ||
1847 | static void sx_throttle (struct tty_struct * tty) | |
1848 | { | |
1849 | struct sx_port *port = (struct sx_port *)tty->driver_data; | |
1850 | ||
1851 | func_enter2(); | |
1852 | /* If the port is using any type of input flow | |
1853 | * control then throttle the port. | |
1854 | */ | |
1855 | if((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty)) ) { | |
1856 | port->gs.flags |= SX_RX_THROTTLE; | |
1857 | } | |
1858 | func_exit(); | |
1859 | } | |
1860 | ||
1861 | ||
1862 | static void sx_unthrottle (struct tty_struct * tty) | |
1863 | { | |
1864 | struct sx_port *port = (struct sx_port *)tty->driver_data; | |
1865 | ||
1866 | func_enter2(); | |
1867 | /* Always unthrottle even if flow control is not enabled on | |
1868 | * this port in case we disabled flow control while the port | |
1869 | * was throttled | |
1870 | */ | |
1871 | port->gs.flags &= ~SX_RX_THROTTLE; | |
1872 | func_exit(); | |
1873 | return; | |
1874 | } | |
1875 | ||
1876 | ||
1877 | /* ********************************************************************** * | |
1878 | * Here are the initialization routines. * | |
1879 | * ********************************************************************** */ | |
1880 | ||
1881 | ||
1882 | ||
1883 | ||
1884 | static int sx_init_board (struct sx_board *board) | |
1885 | { | |
1886 | int addr; | |
1887 | int chans; | |
1888 | int type; | |
1889 | ||
1890 | func_enter(); | |
1891 | ||
1892 | /* This is preceded by downloading the download code. */ | |
1893 | ||
1894 | board->flags |= SX_BOARD_INITIALIZED; | |
1895 | ||
1896 | if (read_sx_byte (board, 0)) | |
1897 | /* CF boards may need this. */ | |
1898 | write_sx_byte(board,0, 0); | |
1899 | ||
1900 | /* This resets the processor again, to make sure it didn't do any | |
1901 | foolish things while we were downloading the image */ | |
1902 | if (!sx_reset (board)) | |
1903 | return 0; | |
1904 | ||
1905 | sx_start_board (board); | |
1906 | udelay (10); | |
1907 | if (!sx_busy_wait_neq (board, 0, 0xff, 0)) { | |
1908 | printk (KERN_ERR "sx: Ooops. Board won't initialize.\n"); | |
1909 | return 0; | |
1910 | } | |
1911 | ||
1912 | /* Ok. So now the processor on the card is running. It gathered | |
1913 | some info for us... */ | |
1914 | sx_dprintk (SX_DEBUG_INIT, "The sxcard structure:\n"); | |
1915 | if (sx_debug & SX_DEBUG_INIT) my_hd_io (board->base, 0x10); | |
1916 | sx_dprintk (SX_DEBUG_INIT, "the first sx_module structure:\n"); | |
1917 | if (sx_debug & SX_DEBUG_INIT) my_hd_io (board->base + 0x80, 0x30); | |
1918 | ||
1919 | sx_dprintk (SX_DEBUG_INIT, | |
1920 | "init_status: %x, %dk memory, firmware V%x.%02x,\n", | |
1921 | read_sx_byte (board, 0), read_sx_byte(board, 1), | |
1922 | read_sx_byte (board, 5), read_sx_byte(board, 4)); | |
1923 | ||
1924 | if (read_sx_byte (board, 0) == 0xff) { | |
1925 | printk (KERN_INFO "sx: No modules found. Sorry.\n"); | |
1926 | board->nports = 0; | |
1927 | return 0; | |
1928 | } | |
1929 | ||
1930 | chans = 0; | |
1931 | ||
1932 | if (IS_SX_BOARD(board)) { | |
1933 | sx_write_board_word (board, cc_int_count, sx_maxints); | |
1934 | } else { | |
1935 | if (sx_maxints) | |
1936 | sx_write_board_word (board, cc_int_count, SI_PROCESSOR_CLOCK/8/sx_maxints); | |
1937 | } | |
1938 | ||
1939 | /* grab the first module type... */ | |
1940 | /* board->ta_type = mod_compat_type (read_sx_byte (board, 0x80 + 0x08)); */ | |
1941 | board->ta_type = mod_compat_type (sx_read_module_byte (board, 0x80, mc_chip)); | |
1942 | ||
1943 | /* XXX byteorder */ | |
1944 | for (addr = 0x80;addr != 0;addr = read_sx_word (board, addr) & 0x7fff) { | |
1945 | type = sx_read_module_byte (board, addr, mc_chip); | |
1946 | sx_dprintk (SX_DEBUG_INIT, "Module at %x: %d channels\n", | |
1947 | addr, read_sx_byte (board, addr + 2)); | |
1948 | ||
1949 | chans += sx_read_module_byte (board, addr, mc_type); | |
1950 | ||
1951 | sx_dprintk (SX_DEBUG_INIT, "module is an %s, which has %s/%s panels\n", | |
1952 | mod_type_s (type), | |
1953 | pan_type_s (sx_read_module_byte (board, addr, mc_mods) & 0xf), | |
1954 | pan_type_s (sx_read_module_byte (board, addr, mc_mods) >> 4)); | |
1955 | ||
1956 | sx_dprintk (SX_DEBUG_INIT, "CD1400 versions: %x/%x, ASIC version: %x\n", | |
1957 | sx_read_module_byte (board, addr, mc_rev1), | |
1958 | sx_read_module_byte (board, addr, mc_rev2), | |
1959 | sx_read_module_byte (board, addr, mc_mtaasic_rev)); | |
1960 | ||
1961 | /* The following combinations are illegal: It should theoretically | |
1962 | work, but timing problems make the bus HANG. */ | |
1963 | ||
1964 | if (mod_compat_type (type) != board->ta_type) { | |
1965 | printk (KERN_ERR "sx: This is an invalid configuration.\n" | |
1966 | "Don't mix TA/MTA/SXDC on the same hostadapter.\n"); | |
1967 | chans=0; | |
1968 | break; | |
1969 | } | |
1970 | if ((IS_EISA_BOARD(board) || | |
1971 | IS_SI_BOARD(board)) && (mod_compat_type(type) == 4)) { | |
1972 | printk (KERN_ERR "sx: This is an invalid configuration.\n" | |
1973 | "Don't use SXDCs on an SI/XIO adapter.\n"); | |
1974 | chans=0; | |
1975 | break; | |
1976 | } | |
1977 | #if 0 /* Problem fixed: firmware 3.05 */ | |
1978 | if (IS_SX_BOARD(board) && (type == TA8)) { | |
1979 | /* There are some issues with the firmware and the DCD/RTS | |
1980 | lines. It might work if you tie them together or something. | |
1981 | It might also work if you get a newer sx_firmware. Therefore | |
1982 | this is just a warning. */ | |
1983 | printk (KERN_WARNING "sx: The SX host doesn't work too well " | |
1984 | "with the TA8 adapters.\nSpecialix is working on it.\n"); | |
1985 | } | |
1986 | #endif | |
1987 | } | |
1988 | ||
1989 | if (chans) { | |
1990 | /* board->flags |= SX_BOARD_PRESENT; */ | |
1991 | if(board->irq > 0) { | |
1992 | /* fixed irq, probably PCI */ | |
1993 | if(sx_irqmask & (1 << board->irq)) { /* may we use this irq? */ | |
0f2ed4c6 | 1994 | if(request_irq(board->irq, sx_interrupt, IRQF_SHARED | IRQF_DISABLED, "sx", board)) { |
1da177e4 LT |
1995 | printk(KERN_ERR "sx: Cannot allocate irq %d.\n", board->irq); |
1996 | board->irq = 0; | |
1997 | } | |
1998 | } else | |
1999 | board->irq = 0; | |
2000 | } else if(board->irq < 0 && sx_irqmask) { | |
2001 | /* auto-allocate irq */ | |
2002 | int irqnr; | |
2003 | int irqmask = sx_irqmask & (IS_SX_BOARD(board) ? SX_ISA_IRQ_MASK : SI2_ISA_IRQ_MASK); | |
2004 | for(irqnr = 15; irqnr > 0; irqnr--) | |
2005 | if(irqmask & (1 << irqnr)) | |
0f2ed4c6 | 2006 | if(! request_irq(irqnr, sx_interrupt, IRQF_SHARED | IRQF_DISABLED, "sx", board)) |
1da177e4 LT |
2007 | break; |
2008 | if(! irqnr) | |
2009 | printk(KERN_ERR "sx: Cannot allocate IRQ.\n"); | |
2010 | board->irq = irqnr; | |
2011 | } else | |
2012 | board->irq = 0; | |
2013 | ||
2014 | if (board->irq) { | |
2015 | /* Found a valid interrupt, start up interrupts! */ | |
2016 | sx_dprintk (SX_DEBUG_INIT, "Using irq %d.\n", board->irq); | |
2017 | sx_start_interrupts (board); | |
2018 | board->poll = sx_slowpoll; | |
2019 | board->flags |= SX_IRQ_ALLOCATED; | |
2020 | } else { | |
2021 | /* no irq: setup board for polled operation */ | |
2022 | board->poll = sx_poll; | |
2023 | sx_dprintk (SX_DEBUG_INIT, "Using poll-interval %d.\n", board->poll); | |
2024 | } | |
2025 | ||
2026 | /* The timer should be initialized anyway: That way we can safely | |
2027 | del_timer it when the module is unloaded. */ | |
2028 | init_timer (&board->timer); | |
2029 | ||
2030 | if (board->poll) { | |
2031 | board->timer.data = (unsigned long) board; | |
2032 | board->timer.function = sx_pollfunc; | |
2033 | board->timer.expires = jiffies + board->poll; | |
2034 | add_timer (&board->timer); | |
2035 | } | |
2036 | } else { | |
2037 | board->irq = 0; | |
2038 | } | |
2039 | ||
2040 | board->nports = chans; | |
2041 | sx_dprintk (SX_DEBUG_INIT, "returning %d ports.", board->nports); | |
2042 | ||
2043 | func_exit(); | |
2044 | return chans; | |
2045 | } | |
2046 | ||
2047 | ||
2048 | static void printheader(void) | |
2049 | { | |
2050 | static int header_printed; | |
2051 | ||
2052 | if (!header_printed) { | |
2053 | printk (KERN_INFO "Specialix SX driver " | |
2054 | "(C) 1998/1999 R.E.Wolff@BitWizard.nl \n"); | |
2055 | printk (KERN_INFO "sx: version %s\n", RCS_ID); | |
2056 | header_printed = 1; | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | ||
2061 | static int probe_sx (struct sx_board *board) | |
2062 | { | |
2063 | struct vpd_prom vpdp; | |
2064 | char *p; | |
2065 | int i; | |
2066 | ||
2067 | func_enter(); | |
2068 | ||
2069 | if (!IS_CF_BOARD (board)) { | |
2070 | sx_dprintk (SX_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", | |
2071 | board->base + SX_VPD_ROM); | |
2072 | ||
2073 | if (sx_debug & SX_DEBUG_PROBE) | |
2074 | my_hd_io(board->base + SX_VPD_ROM, 0x40); | |
2075 | ||
2076 | p = (char *) &vpdp; | |
2077 | for (i=0;i< sizeof (struct vpd_prom);i++) | |
2078 | *p++ = read_sx_byte (board, SX_VPD_ROM + i*2); | |
2079 | ||
2080 | if (sx_debug & SX_DEBUG_PROBE) | |
2081 | my_hd (&vpdp, 0x20); | |
2082 | ||
2083 | sx_dprintk (SX_DEBUG_PROBE, "checking identifier...\n"); | |
2084 | ||
2085 | if (strncmp (vpdp.identifier, SX_VPD_IDENT_STRING, 16) != 0) { | |
2086 | sx_dprintk (SX_DEBUG_PROBE, "Got non-SX identifier: '%s'\n", | |
2087 | vpdp.identifier); | |
2088 | return 0; | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | printheader (); | |
2093 | ||
2094 | if (!IS_CF_BOARD (board)) { | |
2095 | printk (KERN_DEBUG "sx: Found an SX board at %lx\n", board->hw_base); | |
2096 | printk (KERN_DEBUG "sx: hw_rev: %d, assembly level: %d, uniq ID:%08x, ", | |
2097 | vpdp.hwrev, vpdp.hwass, vpdp.uniqid); | |
2098 | printk ( "Manufactured: %d/%d\n", | |
2099 | 1970 + vpdp.myear, vpdp.mweek); | |
2100 | ||
2101 | ||
2102 | if ((((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != SX_PCI_UNIQUEID1) && | |
2103 | (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != SX_ISA_UNIQUEID1)) { | |
2104 | /* This might be a bit harsh. This was the primary reason the | |
2105 | SX/ISA card didn't work at first... */ | |
2106 | printk (KERN_ERR "sx: Hmm. Not an SX/PCI or SX/ISA card. Sorry: giving up.\n"); | |
2107 | return (0); | |
2108 | } | |
2109 | ||
2110 | if (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) == SX_ISA_UNIQUEID1) { | |
2111 | if (((unsigned long)board->hw_base) & 0x8000) { | |
2112 | printk (KERN_WARNING "sx: Warning: There may be hardware problems with the card at %lx.\n", board->hw_base); | |
2113 | printk (KERN_WARNING "sx: Read sx.txt for more info.\n"); | |
2114 | } | |
2115 | } | |
2116 | } | |
2117 | ||
2118 | board->nports = -1; | |
2119 | ||
2120 | /* This resets the processor, and keeps it off the bus. */ | |
2121 | if (!sx_reset (board)) | |
2122 | return 0; | |
2123 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); | |
2124 | ||
2125 | board->flags |= SX_BOARD_PRESENT; | |
2126 | ||
2127 | func_exit(); | |
2128 | return 1; | |
2129 | } | |
2130 | ||
2131 | ||
2132 | ||
2133 | /* Specialix probes for this card at 32k increments from 640k to 16M. | |
2134 | I consider machines with less than 16M unlikely nowadays, so I'm | |
2135 | not probing above 1Mb. Also, 0xa0000, 0xb0000, are taken by the VGA | |
2136 | card. 0xe0000 and 0xf0000 are taken by the BIOS. That only leaves | |
2137 | 0xc0000, 0xc8000, 0xd0000 and 0xd8000 . */ | |
2138 | ||
2139 | static int probe_si (struct sx_board *board) | |
2140 | { | |
2141 | int i; | |
2142 | ||
2143 | func_enter(); | |
2144 | sx_dprintk (SX_DEBUG_PROBE, "Going to verify SI signature hw %lx at %p.\n", board->hw_base, | |
2145 | board->base + SI2_ISA_ID_BASE); | |
2146 | ||
2147 | if (sx_debug & SX_DEBUG_PROBE) | |
2148 | my_hd_io(board->base + SI2_ISA_ID_BASE, 0x8); | |
2149 | ||
2150 | if (!IS_EISA_BOARD(board)) { | |
2151 | if( IS_SI1_BOARD(board) ) | |
2152 | { | |
2153 | for (i=0;i<8;i++) { | |
2154 | write_sx_byte (board, SI2_ISA_ID_BASE+7-i,i); | |
2155 | ||
2156 | } | |
2157 | } | |
2158 | for (i=0;i<8;i++) { | |
2159 | if ((read_sx_byte (board, SI2_ISA_ID_BASE+7-i) & 7) != i) { | |
2160 | func_exit (); | |
2161 | return 0; | |
2162 | } | |
2163 | } | |
2164 | } | |
2165 | ||
2166 | /* Now we're pretty much convinced that there is an SI board here, | |
2167 | but to prevent trouble, we'd better double check that we don't | |
2168 | have an SI1 board when we're probing for an SI2 board.... */ | |
2169 | ||
2170 | write_sx_byte (board, SI2_ISA_ID_BASE,0x10); | |
2171 | if ( IS_SI1_BOARD(board)) { | |
2172 | /* This should be an SI1 board, which has this | |
2173 | location writable... */ | |
04a3d311 | 2174 | if (read_sx_byte (board, SI2_ISA_ID_BASE) != 0x10) { |
1da177e4 LT |
2175 | func_exit (); |
2176 | return 0; | |
04a3d311 | 2177 | } |
1da177e4 LT |
2178 | } else { |
2179 | /* This should be an SI2 board, which has the bottom | |
2180 | 3 bits non-writable... */ | |
04a3d311 | 2181 | if (read_sx_byte (board, SI2_ISA_ID_BASE) == 0x10) { |
1da177e4 LT |
2182 | func_exit (); |
2183 | return 0; | |
04a3d311 | 2184 | } |
1da177e4 LT |
2185 | } |
2186 | ||
2187 | /* Now we're pretty much convinced that there is an SI board here, | |
2188 | but to prevent trouble, we'd better double check that we don't | |
2189 | have an SI1 board when we're probing for an SI2 board.... */ | |
2190 | ||
2191 | write_sx_byte (board, SI2_ISA_ID_BASE,0x10); | |
2192 | if ( IS_SI1_BOARD(board)) { | |
2193 | /* This should be an SI1 board, which has this | |
2194 | location writable... */ | |
04a3d311 | 2195 | if (read_sx_byte (board, SI2_ISA_ID_BASE) != 0x10) { |
1da177e4 LT |
2196 | func_exit(); |
2197 | return 0; | |
04a3d311 | 2198 | } |
1da177e4 LT |
2199 | } else { |
2200 | /* This should be an SI2 board, which has the bottom | |
2201 | 3 bits non-writable... */ | |
04a3d311 | 2202 | if (read_sx_byte (board, SI2_ISA_ID_BASE) == 0x10) { |
1da177e4 LT |
2203 | func_exit (); |
2204 | return 0; | |
04a3d311 | 2205 | } |
1da177e4 LT |
2206 | } |
2207 | ||
2208 | printheader (); | |
2209 | ||
2210 | printk (KERN_DEBUG "sx: Found an SI board at %lx\n", board->hw_base); | |
2211 | /* Compared to the SX boards, it is a complete guess as to what | |
2212 | this card is up to... */ | |
2213 | ||
2214 | board->nports = -1; | |
2215 | ||
2216 | /* This resets the processor, and keeps it off the bus. */ | |
2217 | if (!sx_reset (board)) | |
2218 | return 0; | |
2219 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); | |
2220 | ||
2221 | board->flags |= SX_BOARD_PRESENT; | |
2222 | ||
2223 | func_exit(); | |
2224 | return 1; | |
2225 | } | |
2226 | ||
b68e31d0 | 2227 | static const struct tty_operations sx_ops = { |
1da177e4 LT |
2228 | .break_ctl = sx_break, |
2229 | .open = sx_open, | |
2230 | .close = gs_close, | |
2231 | .write = gs_write, | |
2232 | .put_char = gs_put_char, | |
2233 | .flush_chars = gs_flush_chars, | |
2234 | .write_room = gs_write_room, | |
2235 | .chars_in_buffer = gs_chars_in_buffer, | |
2236 | .flush_buffer = gs_flush_buffer, | |
2237 | .ioctl = sx_ioctl, | |
2238 | .throttle = sx_throttle, | |
2239 | .unthrottle = sx_unthrottle, | |
2240 | .set_termios = gs_set_termios, | |
2241 | .stop = gs_stop, | |
2242 | .start = gs_start, | |
2243 | .hangup = gs_hangup, | |
2244 | .tiocmget = sx_tiocmget, | |
2245 | .tiocmset = sx_tiocmset, | |
2246 | }; | |
2247 | ||
2248 | static int sx_init_drivers(void) | |
2249 | { | |
2250 | int error; | |
2251 | ||
2252 | func_enter(); | |
2253 | ||
2254 | sx_driver = alloc_tty_driver(sx_nports); | |
2255 | if (!sx_driver) | |
2256 | return 1; | |
2257 | sx_driver->owner = THIS_MODULE; | |
2258 | sx_driver->driver_name = "specialix_sx"; | |
2259 | sx_driver->name = "ttyX"; | |
2260 | sx_driver->major = SX_NORMAL_MAJOR; | |
2261 | sx_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
2262 | sx_driver->subtype = SERIAL_TYPE_NORMAL; | |
2263 | sx_driver->init_termios = tty_std_termios; | |
2264 | sx_driver->init_termios.c_cflag = | |
2265 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
606d099c AC |
2266 | sx_driver->init_termios.c_ispeed = 9600; |
2267 | sx_driver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
2268 | sx_driver->flags = TTY_DRIVER_REAL_RAW; |
2269 | tty_set_operations(sx_driver, &sx_ops); | |
2270 | ||
2271 | if ((error = tty_register_driver(sx_driver))) { | |
2272 | put_tty_driver(sx_driver); | |
2273 | printk(KERN_ERR "sx: Couldn't register sx driver, error = %d\n", | |
2274 | error); | |
2275 | return 1; | |
2276 | } | |
2277 | func_exit(); | |
2278 | return 0; | |
2279 | } | |
2280 | ||
2281 | ||
2282 | static void * ckmalloc (int size) | |
2283 | { | |
2284 | void *p; | |
2285 | ||
2286 | p = kmalloc(size, GFP_KERNEL); | |
2287 | if (p) | |
2288 | memset(p, 0, size); | |
2289 | return p; | |
2290 | } | |
2291 | ||
2292 | ||
2293 | static int sx_init_portstructs (int nboards, int nports) | |
2294 | { | |
2295 | struct sx_board *board; | |
2296 | struct sx_port *port; | |
2297 | int i, j; | |
2298 | int addr, chans; | |
2299 | int portno; | |
2300 | ||
2301 | func_enter(); | |
2302 | ||
2303 | /* Many drivers statically allocate the maximum number of ports | |
2304 | There is no reason not to allocate them dynamically. Is there? -- REW */ | |
2305 | sx_ports = ckmalloc(nports * sizeof (struct sx_port)); | |
2306 | if (!sx_ports) | |
2307 | return -ENOMEM; | |
2308 | ||
2309 | port = sx_ports; | |
2310 | for (i = 0; i < nboards; i++) { | |
2311 | board = &boards[i]; | |
2312 | board->ports = port; | |
2313 | for (j=0; j < boards[i].nports;j++) { | |
2314 | sx_dprintk (SX_DEBUG_INIT, "initing port %d\n", j); | |
2315 | port->gs.magic = SX_MAGIC; | |
2316 | port->gs.close_delay = HZ/2; | |
2317 | port->gs.closing_wait = 30 * HZ; | |
2318 | port->board = board; | |
2319 | port->gs.rd = &sx_real_driver; | |
2320 | #ifdef NEW_WRITE_LOCKING | |
81861d78 | 2321 | port->gs.port_write_mutex = MUTEX; |
1da177e4 | 2322 | #endif |
34af946a | 2323 | spin_lock_init(&port->gs.driver_lock); |
1da177e4 LT |
2324 | /* |
2325 | * Initializing wait queue | |
2326 | */ | |
2327 | init_waitqueue_head(&port->gs.open_wait); | |
2328 | init_waitqueue_head(&port->gs.close_wait); | |
2329 | ||
2330 | port++; | |
2331 | } | |
2332 | } | |
2333 | ||
2334 | port = sx_ports; | |
2335 | portno = 0; | |
2336 | for (i = 0; i < nboards; i++) { | |
2337 | board = &boards[i]; | |
2338 | board->port_base = portno; | |
2339 | /* Possibly the configuration was rejected. */ | |
2340 | sx_dprintk (SX_DEBUG_PROBE, "Board has %d channels\n", board->nports); | |
2341 | if (board->nports <= 0) continue; | |
2342 | /* XXX byteorder ?? */ | |
2343 | for (addr = 0x80;addr != 0;addr = read_sx_word (board, addr) & 0x7fff) { | |
2344 | chans = sx_read_module_byte (board, addr, mc_type); | |
2345 | sx_dprintk (SX_DEBUG_PROBE, "Module at %x: %d channels\n", addr, chans); | |
2346 | sx_dprintk (SX_DEBUG_PROBE, "Port at"); | |
2347 | for (j=0;j<chans;j++) { | |
2348 | /* The "sx-way" is the way it SHOULD be done. That way in the | |
2349 | future, the firmware may for example pack the structures a bit | |
2350 | more efficient. Neil tells me it isn't going to happen anytime | |
2351 | soon though. */ | |
2352 | if (IS_SX_BOARD(board)) | |
2353 | port->ch_base = sx_read_module_word (board, addr+j*2, mc_chan_pointer); | |
2354 | else | |
2355 | port->ch_base = addr + 0x100 + 0x300*j; | |
2356 | ||
2357 | sx_dprintk (SX_DEBUG_PROBE, " %x", port->ch_base); | |
2358 | port->line = portno++; | |
2359 | port++; | |
2360 | } | |
2361 | sx_dprintk (SX_DEBUG_PROBE, "\n"); | |
2362 | } | |
2363 | /* This has to be done earlier. */ | |
2364 | /* board->flags |= SX_BOARD_INITIALIZED; */ | |
2365 | } | |
2366 | ||
2367 | func_exit(); | |
2368 | return 0; | |
2369 | } | |
2370 | ||
2371 | static void __exit sx_release_drivers(void) | |
2372 | { | |
2373 | func_enter(); | |
2374 | tty_unregister_driver(sx_driver); | |
2375 | put_tty_driver(sx_driver); | |
2376 | func_exit(); | |
2377 | } | |
2378 | ||
2379 | #ifdef CONFIG_PCI | |
2380 | /******************************************************** | |
2381 | * Setting bit 17 in the CNTRL register of the PLX 9050 * | |
2382 | * chip forces a retry on writes while a read is pending.* | |
2383 | * This is to prevent the card locking up on Intel Xeon * | |
2384 | * multiprocessor systems with the NX chipset. -- NV * | |
2385 | ********************************************************/ | |
2386 | ||
2387 | /* Newer cards are produced with this bit set from the configuration | |
2388 | EEprom. As the bit is read/write for the CPU, we can fix it here, | |
2389 | if we detect that it isn't set correctly. -- REW */ | |
2390 | ||
2391 | static void fix_sx_pci (struct pci_dev *pdev, struct sx_board *board) | |
2392 | { | |
2393 | unsigned int hwbase; | |
2394 | void __iomem *rebase; | |
2395 | unsigned int t; | |
2396 | ||
2397 | #define CNTRL_REG_OFFSET 0x50 | |
2398 | #define CNTRL_REG_GOODVALUE 0x18260000 | |
2399 | ||
2400 | pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); | |
2401 | hwbase &= PCI_BASE_ADDRESS_MEM_MASK; | |
2402 | rebase = ioremap(hwbase, 0x80); | |
2403 | t = readl (rebase + CNTRL_REG_OFFSET); | |
2404 | if (t != CNTRL_REG_GOODVALUE) { | |
2405 | printk (KERN_DEBUG "sx: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE); | |
2406 | writel (CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); | |
2407 | } | |
2408 | iounmap(rebase); | |
2409 | } | |
2410 | #endif | |
2411 | ||
2412 | ||
2413 | static int __init sx_init(void) | |
2414 | { | |
2415 | int i; | |
2416 | int found = 0; | |
2417 | int eisa_slot; | |
2418 | struct sx_board *board; | |
2419 | ||
2420 | #ifdef CONFIG_PCI | |
2421 | struct pci_dev *pdev = NULL; | |
2422 | unsigned int tint; | |
2423 | unsigned short tshort; | |
2424 | #endif | |
2425 | ||
2426 | func_enter(); | |
2427 | sx_dprintk (SX_DEBUG_INIT, "Initing sx module... (sx_debug=%d)\n", sx_debug); | |
2428 | if (abs ((long) (&sx_debug) - sx_debug) < 0x10000) { | |
2429 | printk (KERN_WARNING "sx: sx_debug is an address, instead of a value. " | |
2430 | "Assuming -1.\n"); | |
2431 | printk ("(%p)\n", &sx_debug); | |
2432 | sx_debug=-1; | |
2433 | } | |
2434 | ||
2435 | if (misc_register(&sx_fw_device) < 0) { | |
2436 | printk(KERN_ERR "SX: Unable to register firmware loader driver.\n"); | |
2437 | return -EIO; | |
2438 | } | |
2439 | ||
2440 | #ifdef CONFIG_PCI | |
2441 | while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, | |
2442 | PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, | |
2443 | pdev))) { | |
2444 | if (pci_enable_device(pdev)) | |
2445 | continue; | |
2446 | ||
2447 | /* Specialix has a whole bunch of cards with | |
2448 | 0x2000 as the device ID. They say its because | |
2449 | the standard requires it. Stupid standard. */ | |
2450 | /* It seems that reading a word doesn't work reliably on 2.0. | |
2451 | Also, reading a non-aligned dword doesn't work. So we read the | |
2452 | whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID) | |
2453 | ourselves */ | |
2454 | /* I don't know why the define doesn't work, constant 0x2c does --REW */ | |
2455 | pci_read_config_dword (pdev, 0x2c, &tint); | |
2456 | tshort = (tint >> 16) & 0xffff; | |
2457 | sx_dprintk (SX_DEBUG_PROBE, "Got a specialix card: %x.\n", tint); | |
2458 | /* sx_dprintk (SX_DEBUG_PROBE, "pdev = %d/%d (%x)\n", pdev, tint); */ | |
2459 | if ((tshort != 0x0200) && (tshort != 0x0300)) { | |
2460 | sx_dprintk (SX_DEBUG_PROBE, "But it's not an SX card (%d)...\n", | |
2461 | tshort); | |
2462 | continue; | |
2463 | } | |
2464 | board = &boards[found]; | |
2465 | ||
2466 | board->flags &= ~SX_BOARD_TYPE; | |
2467 | board->flags |= (tshort == 0x200)?SX_PCI_BOARD: | |
2468 | SX_CFPCI_BOARD; | |
2469 | ||
2470 | /* CF boards use base address 3.... */ | |
2471 | if (IS_CF_BOARD (board)) | |
2472 | board->hw_base = pci_resource_start (pdev, 3); | |
2473 | else | |
2474 | board->hw_base = pci_resource_start (pdev, 2); | |
2475 | board->base2 = | |
2476 | board->base = ioremap(board->hw_base, WINDOW_LEN (board)); | |
2477 | if (!board->base) { | |
2478 | printk(KERN_ERR "ioremap failed\n"); | |
2479 | /* XXX handle error */ | |
2480 | } | |
2481 | ||
2482 | /* Most of the stuff on the CF board is offset by | |
2483 | 0x18000 .... */ | |
2484 | if (IS_CF_BOARD (board)) board->base += 0x18000; | |
2485 | ||
2486 | board->irq = pdev->irq; | |
2487 | ||
2488 | sx_dprintk (SX_DEBUG_PROBE, "Got a specialix card: %x/%p(%d) %x.\n", | |
2489 | tint, boards[found].base, board->irq, board->flags); | |
2490 | ||
2491 | if (probe_sx (board)) { | |
2492 | found++; | |
2493 | fix_sx_pci (pdev, board); | |
2494 | } else | |
2495 | iounmap(board->base2); | |
2496 | } | |
2497 | #endif | |
2498 | ||
2499 | for (i=0;i<NR_SX_ADDRS;i++) { | |
2500 | board = &boards[found]; | |
2501 | board->hw_base = sx_probe_addrs[i]; | |
2502 | board->base2 = | |
2503 | board->base = ioremap(board->hw_base, SX_WINDOW_LEN); | |
2504 | board->flags &= ~SX_BOARD_TYPE; | |
2505 | board->flags |= SX_ISA_BOARD; | |
2506 | board->irq = sx_irqmask?-1:0; | |
2507 | ||
2508 | if (probe_sx (board)) { | |
2509 | found++; | |
2510 | } else { | |
2511 | iounmap(board->base); | |
2512 | } | |
2513 | } | |
2514 | ||
2515 | for (i=0;i<NR_SI_ADDRS;i++) { | |
2516 | board = &boards[found]; | |
2517 | board->hw_base = si_probe_addrs[i]; | |
2518 | board->base2 = | |
2519 | board->base = ioremap(board->hw_base, SI2_ISA_WINDOW_LEN); | |
2520 | board->flags &= ~SX_BOARD_TYPE; | |
2521 | board->flags |= SI_ISA_BOARD; | |
2522 | board->irq = sx_irqmask ?-1:0; | |
2523 | ||
2524 | if (probe_si (board)) { | |
2525 | found++; | |
2526 | } else { | |
2527 | iounmap (board->base); | |
2528 | } | |
2529 | } | |
2530 | for (i=0;i<NR_SI1_ADDRS;i++) { | |
2531 | board = &boards[found]; | |
2532 | board->hw_base = si1_probe_addrs[i]; | |
2533 | board->base2 = | |
2534 | board->base = ioremap(board->hw_base, SI1_ISA_WINDOW_LEN); | |
2535 | board->flags &= ~SX_BOARD_TYPE; | |
2536 | board->flags |= SI1_ISA_BOARD; | |
2537 | board->irq = sx_irqmask ?-1:0; | |
2538 | ||
2539 | if (probe_si (board)) { | |
2540 | found++; | |
2541 | } else { | |
2542 | iounmap (board->base); | |
2543 | } | |
2544 | } | |
2545 | ||
2546 | sx_dprintk(SX_DEBUG_PROBE, "Probing for EISA cards\n"); | |
2547 | for(eisa_slot=0x1000; eisa_slot<0x10000; eisa_slot+=0x1000) | |
2548 | { | |
2549 | if((inb(eisa_slot+0xc80)==0x4d) && | |
2550 | (inb(eisa_slot+0xc81)==0x98)) | |
2551 | { | |
2552 | sx_dprintk(SX_DEBUG_PROBE, "%s : Signature found in EISA slot %d, Product %d Rev %d\n", | |
2553 | "XIO", (eisa_slot>>12), inb(eisa_slot+0xc82), inb(eisa_slot+0xc83)); | |
2554 | ||
2555 | board = &boards[found]; | |
2556 | board->eisa_base = eisa_slot; | |
2557 | board->flags &= ~SX_BOARD_TYPE; | |
2558 | board->flags |= SI_EISA_BOARD; | |
2559 | ||
2560 | board->hw_base = (((inb(0xc01+eisa_slot) << 8) + inb(0xc00+eisa_slot)) << 16); | |
2561 | board->base2 = | |
2562 | board->base = ioremap(board->hw_base, SI2_EISA_WINDOW_LEN); | |
2563 | ||
2564 | sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base); | |
2565 | sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base); | |
2566 | board->irq = inb(board->eisa_base+0xc02)>>4; | |
2567 | sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq); | |
2568 | ||
2569 | probe_si(board); | |
2570 | ||
2571 | found++; | |
2572 | } | |
2573 | } | |
2574 | if (found) { | |
2575 | printk (KERN_INFO "sx: total of %d boards detected.\n", found); | |
2576 | } else { | |
2577 | misc_deregister(&sx_fw_device); | |
2578 | } | |
2579 | ||
2580 | func_exit(); | |
2581 | return found?0:-EIO; | |
2582 | } | |
2583 | ||
2584 | ||
2585 | static void __exit sx_exit (void) | |
2586 | { | |
2587 | int i; | |
2588 | struct sx_board *board; | |
2589 | ||
2590 | func_enter(); | |
2591 | for (i = 0; i < SX_NBOARDS; i++) { | |
2592 | board = &boards[i]; | |
2593 | if (board->flags & SX_BOARD_INITIALIZED) { | |
2594 | sx_dprintk (SX_DEBUG_CLEANUP, "Cleaning up board at %p\n", board->base); | |
2595 | /* The board should stop messing with us. | |
2596 | (actually I mean the interrupt) */ | |
2597 | sx_reset (board); | |
2598 | if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED)) | |
2599 | free_irq (board->irq, board); | |
2600 | ||
2601 | /* It is safe/allowed to del_timer a non-active timer */ | |
2602 | del_timer (& board->timer); | |
2603 | iounmap(board->base); | |
2604 | } | |
2605 | } | |
2606 | if (misc_deregister(&sx_fw_device) < 0) { | |
48d1a7ea | 2607 | printk (KERN_INFO "sx: couldn't deregister firmware loader device\n"); |
1da177e4 LT |
2608 | } |
2609 | sx_dprintk (SX_DEBUG_CLEANUP, "Cleaning up drivers (%d)\n", sx_initialized); | |
2610 | if (sx_initialized) | |
2611 | sx_release_drivers (); | |
2612 | ||
2613 | kfree (sx_ports); | |
2614 | func_exit(); | |
2615 | } | |
2616 | ||
2617 | module_init(sx_init); | |
2618 | module_exit(sx_exit); | |
2619 | ||
2620 |