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Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
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Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
File MIME type: text/plain
File size: 105380 byte(s)
Tag kernel26-2.6.12-alx-r9
1 | /* |
2 | |
3 | |
4 | Copyright (C) 1996 Digi International. |
5 | |
6 | For technical support please email digiLinux@dgii.com or |
7 | call Digi tech support at (612) 912-3456 |
8 | |
9 | Much of this design and code came from epca.c which was |
10 | copyright (C) 1994, 1995 Troy De Jongh, and subsquently |
11 | modified by David Nugent, Christoph Lameter, Mike McLagan. |
12 | |
13 | This program is free software; you can redistribute it and/or modify |
14 | it under the terms of the GNU General Public License as published by |
15 | the Free Software Foundation; either version 2 of the License, or |
16 | (at your option) any later version. |
17 | |
18 | This program is distributed in the hope that it will be useful, |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
21 | GNU General Public License for more details. |
22 | |
23 | You should have received a copy of the GNU General Public License |
24 | along with this program; if not, write to the Free Software |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
26 | |
27 | --------------------------------------------------------------------------- */ |
28 | /* See README.epca for change history --DAT*/ |
29 | |
30 | |
31 | #include <linux/config.h> |
32 | #include <linux/module.h> |
33 | #include <linux/kernel.h> |
34 | #include <linux/types.h> |
35 | #include <linux/init.h> |
36 | #include <linux/serial.h> |
37 | #include <linux/delay.h> |
38 | #include <linux/ctype.h> |
39 | #include <linux/tty.h> |
40 | #include <linux/tty_flip.h> |
41 | #include <linux/slab.h> |
42 | #include <linux/ioport.h> |
43 | #include <linux/interrupt.h> |
44 | #include <asm/uaccess.h> |
45 | #include <asm/io.h> |
46 | |
47 | #ifdef CONFIG_PCI |
48 | #define ENABLE_PCI |
49 | #endif /* CONFIG_PCI */ |
50 | |
51 | #define putUser(arg1, arg2) put_user(arg1, (unsigned long __user *)arg2) |
52 | #define getUser(arg1, arg2) get_user(arg1, (unsigned __user *)arg2) |
53 | |
54 | #ifdef ENABLE_PCI |
55 | #include <linux/pci.h> |
56 | #include "digiPCI.h" |
57 | #endif /* ENABLE_PCI */ |
58 | |
59 | #include "digi1.h" |
60 | #include "digiFep1.h" |
61 | #include "epca.h" |
62 | #include "epcaconfig.h" |
63 | |
64 | #if BITS_PER_LONG != 32 |
65 | # error FIXME: this driver only works on 32-bit platforms |
66 | #endif |
67 | |
68 | /* ---------------------- Begin defines ------------------------ */ |
69 | |
70 | #define VERSION "1.3.0.1-LK" |
71 | |
72 | /* This major needs to be submitted to Linux to join the majors list */ |
73 | |
74 | #define DIGIINFOMAJOR 35 /* For Digi specific ioctl */ |
75 | |
76 | |
77 | #define MAXCARDS 7 |
78 | #define epcaassert(x, msg) if (!(x)) epca_error(__LINE__, msg) |
79 | |
80 | #define PFX "epca: " |
81 | |
82 | /* ----------------- Begin global definitions ------------------- */ |
83 | |
84 | static char mesg[100]; |
85 | static int nbdevs, num_cards, liloconfig; |
86 | static int digi_poller_inhibited = 1 ; |
87 | |
88 | static int setup_error_code; |
89 | static int invalid_lilo_config; |
90 | |
91 | /* ----------------------------------------------------------------------- |
92 | MAXBOARDS is typically 12, but ISA and EISA cards are restricted to |
93 | 7 below. |
94 | --------------------------------------------------------------------------*/ |
95 | static struct board_info boards[MAXBOARDS]; |
96 | |
97 | |
98 | /* ------------- Begin structures used for driver registeration ---------- */ |
99 | |
100 | static struct tty_driver *pc_driver; |
101 | static struct tty_driver *pc_info; |
102 | |
103 | /* ------------------ Begin Digi specific structures -------------------- */ |
104 | |
105 | /* ------------------------------------------------------------------------ |
106 | digi_channels represents an array of structures that keep track of |
107 | each channel of the Digi product. Information such as transmit and |
108 | receive pointers, termio data, and signal definitions (DTR, CTS, etc ...) |
109 | are stored here. This structure is NOT used to overlay the cards |
110 | physical channel structure. |
111 | -------------------------------------------------------------------------- */ |
112 | |
113 | static struct channel digi_channels[MAX_ALLOC]; |
114 | |
115 | /* ------------------------------------------------------------------------ |
116 | card_ptr is an array used to hold the address of the |
117 | first channel structure of each card. This array will hold |
118 | the addresses of various channels located in digi_channels. |
119 | -------------------------------------------------------------------------- */ |
120 | static struct channel *card_ptr[MAXCARDS]; |
121 | |
122 | static struct timer_list epca_timer; |
123 | |
124 | /* ---------------------- Begin function prototypes --------------------- */ |
125 | |
126 | /* ---------------------------------------------------------------------- |
127 | Begin generic memory functions. These functions will be alias |
128 | (point at) more specific functions dependent on the board being |
129 | configured. |
130 | ----------------------------------------------------------------------- */ |
131 | |
132 | static inline void memwinon(struct board_info *b, unsigned int win); |
133 | static inline void memwinoff(struct board_info *b, unsigned int win); |
134 | static inline void globalwinon(struct channel *ch); |
135 | static inline void rxwinon(struct channel *ch); |
136 | static inline void txwinon(struct channel *ch); |
137 | static inline void memoff(struct channel *ch); |
138 | static inline void assertgwinon(struct channel *ch); |
139 | static inline void assertmemoff(struct channel *ch); |
140 | |
141 | /* ---- Begin more 'specific' memory functions for cx_like products --- */ |
142 | |
143 | static inline void pcxem_memwinon(struct board_info *b, unsigned int win); |
144 | static inline void pcxem_memwinoff(struct board_info *b, unsigned int win); |
145 | static inline void pcxem_globalwinon(struct channel *ch); |
146 | static inline void pcxem_rxwinon(struct channel *ch); |
147 | static inline void pcxem_txwinon(struct channel *ch); |
148 | static inline void pcxem_memoff(struct channel *ch); |
149 | |
150 | /* ------ Begin more 'specific' memory functions for the pcxe ------- */ |
151 | |
152 | static inline void pcxe_memwinon(struct board_info *b, unsigned int win); |
153 | static inline void pcxe_memwinoff(struct board_info *b, unsigned int win); |
154 | static inline void pcxe_globalwinon(struct channel *ch); |
155 | static inline void pcxe_rxwinon(struct channel *ch); |
156 | static inline void pcxe_txwinon(struct channel *ch); |
157 | static inline void pcxe_memoff(struct channel *ch); |
158 | |
159 | /* ---- Begin more 'specific' memory functions for the pc64xe and pcxi ---- */ |
160 | /* Note : pc64xe and pcxi share the same windowing routines */ |
161 | |
162 | static inline void pcxi_memwinon(struct board_info *b, unsigned int win); |
163 | static inline void pcxi_memwinoff(struct board_info *b, unsigned int win); |
164 | static inline void pcxi_globalwinon(struct channel *ch); |
165 | static inline void pcxi_rxwinon(struct channel *ch); |
166 | static inline void pcxi_txwinon(struct channel *ch); |
167 | static inline void pcxi_memoff(struct channel *ch); |
168 | |
169 | /* - Begin 'specific' do nothing memory functions needed for some cards - */ |
170 | |
171 | static inline void dummy_memwinon(struct board_info *b, unsigned int win); |
172 | static inline void dummy_memwinoff(struct board_info *b, unsigned int win); |
173 | static inline void dummy_globalwinon(struct channel *ch); |
174 | static inline void dummy_rxwinon(struct channel *ch); |
175 | static inline void dummy_txwinon(struct channel *ch); |
176 | static inline void dummy_memoff(struct channel *ch); |
177 | static inline void dummy_assertgwinon(struct channel *ch); |
178 | static inline void dummy_assertmemoff(struct channel *ch); |
179 | |
180 | /* ------------------- Begin declare functions ----------------------- */ |
181 | |
182 | static inline struct channel *verifyChannel(register struct tty_struct *); |
183 | static inline void pc_sched_event(struct channel *, int); |
184 | static void epca_error(int, char *); |
185 | static void pc_close(struct tty_struct *, struct file *); |
186 | static void shutdown(struct channel *); |
187 | static void pc_hangup(struct tty_struct *); |
188 | static void pc_put_char(struct tty_struct *, unsigned char); |
189 | static int pc_write_room(struct tty_struct *); |
190 | static int pc_chars_in_buffer(struct tty_struct *); |
191 | static void pc_flush_buffer(struct tty_struct *); |
192 | static void pc_flush_chars(struct tty_struct *); |
193 | static int block_til_ready(struct tty_struct *, struct file *, |
194 | struct channel *); |
195 | static int pc_open(struct tty_struct *, struct file *); |
196 | static void post_fep_init(unsigned int crd); |
197 | static void epcapoll(unsigned long); |
198 | static void doevent(int); |
199 | static void fepcmd(struct channel *, int, int, int, int, int); |
200 | static unsigned termios2digi_h(struct channel *ch, unsigned); |
201 | static unsigned termios2digi_i(struct channel *ch, unsigned); |
202 | static unsigned termios2digi_c(struct channel *ch, unsigned); |
203 | static void epcaparam(struct tty_struct *, struct channel *); |
204 | static void receive_data(struct channel *); |
205 | static int pc_ioctl(struct tty_struct *, struct file *, |
206 | unsigned int, unsigned long); |
207 | static int info_ioctl(struct tty_struct *, struct file *, |
208 | unsigned int, unsigned long); |
209 | static void pc_set_termios(struct tty_struct *, struct termios *); |
210 | static void do_softint(void *); |
211 | static void pc_stop(struct tty_struct *); |
212 | static void pc_start(struct tty_struct *); |
213 | static void pc_throttle(struct tty_struct * tty); |
214 | static void pc_unthrottle(struct tty_struct *tty); |
215 | static void digi_send_break(struct channel *ch, int msec); |
216 | static void setup_empty_event(struct tty_struct *tty, struct channel *ch); |
217 | void epca_setup(char *, int *); |
218 | void console_print(const char *); |
219 | |
220 | static int get_termio(struct tty_struct *, struct termio __user *); |
221 | static int pc_write(struct tty_struct *, const unsigned char *, int); |
222 | int pc_init(void); |
223 | |
224 | #ifdef ENABLE_PCI |
225 | static int init_PCI(void); |
226 | #endif /* ENABLE_PCI */ |
227 | |
228 | |
229 | /* ------------------------------------------------------------------ |
230 | Table of functions for each board to handle memory. Mantaining |
231 | parallelism is a *very* good idea here. The idea is for the |
232 | runtime code to blindly call these functions, not knowing/caring |
233 | about the underlying hardware. This stuff should contain no |
234 | conditionals; if more functionality is needed a different entry |
235 | should be established. These calls are the interface calls and |
236 | are the only functions that should be accessed. Anyone caught |
237 | making direct calls deserves what they get. |
238 | -------------------------------------------------------------------- */ |
239 | |
240 | static inline void memwinon(struct board_info *b, unsigned int win) |
241 | { |
242 | (b->memwinon)(b, win); |
243 | } |
244 | |
245 | static inline void memwinoff(struct board_info *b, unsigned int win) |
246 | { |
247 | (b->memwinoff)(b, win); |
248 | } |
249 | |
250 | static inline void globalwinon(struct channel *ch) |
251 | { |
252 | (ch->board->globalwinon)(ch); |
253 | } |
254 | |
255 | static inline void rxwinon(struct channel *ch) |
256 | { |
257 | (ch->board->rxwinon)(ch); |
258 | } |
259 | |
260 | static inline void txwinon(struct channel *ch) |
261 | { |
262 | (ch->board->txwinon)(ch); |
263 | } |
264 | |
265 | static inline void memoff(struct channel *ch) |
266 | { |
267 | (ch->board->memoff)(ch); |
268 | } |
269 | static inline void assertgwinon(struct channel *ch) |
270 | { |
271 | (ch->board->assertgwinon)(ch); |
272 | } |
273 | |
274 | static inline void assertmemoff(struct channel *ch) |
275 | { |
276 | (ch->board->assertmemoff)(ch); |
277 | } |
278 | |
279 | /* --------------------------------------------------------- |
280 | PCXEM windowing is the same as that used in the PCXR |
281 | and CX series cards. |
282 | ------------------------------------------------------------ */ |
283 | |
284 | static inline void pcxem_memwinon(struct board_info *b, unsigned int win) |
285 | { |
286 | outb_p(FEPWIN|win, (int)b->port + 1); |
287 | } |
288 | |
289 | static inline void pcxem_memwinoff(struct board_info *b, unsigned int win) |
290 | { |
291 | outb_p(0, (int)b->port + 1); |
292 | } |
293 | |
294 | static inline void pcxem_globalwinon(struct channel *ch) |
295 | { |
296 | outb_p( FEPWIN, (int)ch->board->port + 1); |
297 | } |
298 | |
299 | static inline void pcxem_rxwinon(struct channel *ch) |
300 | { |
301 | outb_p(ch->rxwin, (int)ch->board->port + 1); |
302 | } |
303 | |
304 | static inline void pcxem_txwinon(struct channel *ch) |
305 | { |
306 | outb_p(ch->txwin, (int)ch->board->port + 1); |
307 | } |
308 | |
309 | static inline void pcxem_memoff(struct channel *ch) |
310 | { |
311 | outb_p(0, (int)ch->board->port + 1); |
312 | } |
313 | |
314 | /* ----------------- Begin pcxe memory window stuff ------------------ */ |
315 | |
316 | static inline void pcxe_memwinon(struct board_info *b, unsigned int win) |
317 | { |
318 | outb_p(FEPWIN | win, (int)b->port + 1); |
319 | } |
320 | |
321 | static inline void pcxe_memwinoff(struct board_info *b, unsigned int win) |
322 | { |
323 | outb_p(inb((int)b->port) & ~FEPMEM, |
324 | (int)b->port + 1); |
325 | outb_p(0, (int)b->port + 1); |
326 | } |
327 | |
328 | static inline void pcxe_globalwinon(struct channel *ch) |
329 | { |
330 | outb_p( FEPWIN, (int)ch->board->port + 1); |
331 | } |
332 | |
333 | static inline void pcxe_rxwinon(struct channel *ch) |
334 | { |
335 | outb_p(ch->rxwin, (int)ch->board->port + 1); |
336 | } |
337 | |
338 | static inline void pcxe_txwinon(struct channel *ch) |
339 | { |
340 | outb_p(ch->txwin, (int)ch->board->port + 1); |
341 | } |
342 | |
343 | static inline void pcxe_memoff(struct channel *ch) |
344 | { |
345 | outb_p(0, (int)ch->board->port); |
346 | outb_p(0, (int)ch->board->port + 1); |
347 | } |
348 | |
349 | /* ------------- Begin pc64xe and pcxi memory window stuff -------------- */ |
350 | |
351 | static inline void pcxi_memwinon(struct board_info *b, unsigned int win) |
352 | { |
353 | outb_p(inb((int)b->port) | FEPMEM, (int)b->port); |
354 | } |
355 | |
356 | static inline void pcxi_memwinoff(struct board_info *b, unsigned int win) |
357 | { |
358 | outb_p(inb((int)b->port) & ~FEPMEM, (int)b->port); |
359 | } |
360 | |
361 | static inline void pcxi_globalwinon(struct channel *ch) |
362 | { |
363 | outb_p(FEPMEM, (int)ch->board->port); |
364 | } |
365 | |
366 | static inline void pcxi_rxwinon(struct channel *ch) |
367 | { |
368 | outb_p(FEPMEM, (int)ch->board->port); |
369 | } |
370 | |
371 | static inline void pcxi_txwinon(struct channel *ch) |
372 | { |
373 | outb_p(FEPMEM, (int)ch->board->port); |
374 | } |
375 | |
376 | static inline void pcxi_memoff(struct channel *ch) |
377 | { |
378 | outb_p(0, (int)ch->board->port); |
379 | } |
380 | |
381 | static inline void pcxi_assertgwinon(struct channel *ch) |
382 | { |
383 | epcaassert(inb((int)ch->board->port) & FEPMEM, "Global memory off"); |
384 | } |
385 | |
386 | static inline void pcxi_assertmemoff(struct channel *ch) |
387 | { |
388 | epcaassert(!(inb((int)ch->board->port) & FEPMEM), "Memory on"); |
389 | } |
390 | |
391 | |
392 | /* ---------------------------------------------------------------------- |
393 | Not all of the cards need specific memory windowing routines. Some |
394 | cards (Such as PCI) needs no windowing routines at all. We provide |
395 | these do nothing routines so that the same code base can be used. |
396 | The driver will ALWAYS call a windowing routine if it thinks it needs |
397 | to; regardless of the card. However, dependent on the card the routine |
398 | may or may not do anything. |
399 | ---------------------------------------------------------------------------*/ |
400 | |
401 | static inline void dummy_memwinon(struct board_info *b, unsigned int win) |
402 | { |
403 | } |
404 | |
405 | static inline void dummy_memwinoff(struct board_info *b, unsigned int win) |
406 | { |
407 | } |
408 | |
409 | static inline void dummy_globalwinon(struct channel *ch) |
410 | { |
411 | } |
412 | |
413 | static inline void dummy_rxwinon(struct channel *ch) |
414 | { |
415 | } |
416 | |
417 | static inline void dummy_txwinon(struct channel *ch) |
418 | { |
419 | } |
420 | |
421 | static inline void dummy_memoff(struct channel *ch) |
422 | { |
423 | } |
424 | |
425 | static inline void dummy_assertgwinon(struct channel *ch) |
426 | { |
427 | } |
428 | |
429 | static inline void dummy_assertmemoff(struct channel *ch) |
430 | { |
431 | } |
432 | |
433 | /* ----------------- Begin verifyChannel function ----------------------- */ |
434 | static inline struct channel *verifyChannel(register struct tty_struct *tty) |
435 | { /* Begin verifyChannel */ |
436 | |
437 | /* -------------------------------------------------------------------- |
438 | This routine basically provides a sanity check. It insures that |
439 | the channel returned is within the proper range of addresses as |
440 | well as properly initialized. If some bogus info gets passed in |
441 | through tty->driver_data this should catch it. |
442 | --------------------------------------------------------------------- */ |
443 | |
444 | if (tty) |
445 | { /* Begin if tty */ |
446 | |
447 | register struct channel *ch = (struct channel *)tty->driver_data; |
448 | |
449 | if ((ch >= &digi_channels[0]) && (ch < &digi_channels[nbdevs])) |
450 | { |
451 | if (ch->magic == EPCA_MAGIC) |
452 | return ch; |
453 | } |
454 | |
455 | } /* End if tty */ |
456 | |
457 | /* Else return a NULL for invalid */ |
458 | return NULL; |
459 | |
460 | } /* End verifyChannel */ |
461 | |
462 | /* ------------------ Begin pc_sched_event ------------------------- */ |
463 | |
464 | static inline void pc_sched_event(struct channel *ch, int event) |
465 | { /* Begin pc_sched_event */ |
466 | |
467 | |
468 | /* ---------------------------------------------------------------------- |
469 | We call this to schedule interrupt processing on some event. The |
470 | kernel sees our request and calls the related routine in OUR driver. |
471 | -------------------------------------------------------------------------*/ |
472 | |
473 | ch->event |= 1 << event; |
474 | schedule_work(&ch->tqueue); |
475 | |
476 | |
477 | } /* End pc_sched_event */ |
478 | |
479 | /* ------------------ Begin epca_error ------------------------- */ |
480 | |
481 | static void epca_error(int line, char *msg) |
482 | { /* Begin epca_error */ |
483 | |
484 | printk(KERN_ERR "epca_error (Digi): line = %d %s\n",line,msg); |
485 | return; |
486 | |
487 | } /* End epca_error */ |
488 | |
489 | /* ------------------ Begin pc_close ------------------------- */ |
490 | static void pc_close(struct tty_struct * tty, struct file * filp) |
491 | { /* Begin pc_close */ |
492 | |
493 | struct channel *ch; |
494 | unsigned long flags; |
495 | |
496 | /* --------------------------------------------------------- |
497 | verifyChannel returns the channel from the tty struct |
498 | if it is valid. This serves as a sanity check. |
499 | ------------------------------------------------------------- */ |
500 | |
501 | if ((ch = verifyChannel(tty)) != NULL) |
502 | { /* Begin if ch != NULL */ |
503 | |
504 | save_flags(flags); |
505 | cli(); |
506 | |
507 | if (tty_hung_up_p(filp)) |
508 | { |
509 | restore_flags(flags); |
510 | return; |
511 | } |
512 | |
513 | /* Check to see if the channel is open more than once */ |
514 | if (ch->count-- > 1) |
515 | { /* Begin channel is open more than once */ |
516 | |
517 | /* ------------------------------------------------------------- |
518 | Return without doing anything. Someone might still be using |
519 | the channel. |
520 | ---------------------------------------------------------------- */ |
521 | |
522 | restore_flags(flags); |
523 | return; |
524 | } /* End channel is open more than once */ |
525 | |
526 | /* Port open only once go ahead with shutdown & reset */ |
527 | |
528 | if (ch->count < 0) |
529 | { |
530 | ch->count = 0; |
531 | } |
532 | |
533 | /* --------------------------------------------------------------- |
534 | Let the rest of the driver know the channel is being closed. |
535 | This becomes important if an open is attempted before close |
536 | is finished. |
537 | ------------------------------------------------------------------ */ |
538 | |
539 | ch->asyncflags |= ASYNC_CLOSING; |
540 | |
541 | tty->closing = 1; |
542 | |
543 | if (ch->asyncflags & ASYNC_INITIALIZED) |
544 | { |
545 | /* Setup an event to indicate when the transmit buffer empties */ |
546 | setup_empty_event(tty, ch); |
547 | tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ |
548 | } |
549 | |
550 | if (tty->driver->flush_buffer) |
551 | tty->driver->flush_buffer(tty); |
552 | |
553 | tty_ldisc_flush(tty); |
554 | shutdown(ch); |
555 | tty->closing = 0; |
556 | ch->event = 0; |
557 | ch->tty = NULL; |
558 | |
559 | if (ch->blocked_open) |
560 | { /* Begin if blocked_open */ |
561 | |
562 | if (ch->close_delay) |
563 | { |
564 | msleep_interruptible(jiffies_to_msecs(ch->close_delay)); |
565 | } |
566 | |
567 | wake_up_interruptible(&ch->open_wait); |
568 | |
569 | } /* End if blocked_open */ |
570 | |
571 | ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED | |
572 | ASYNC_CLOSING); |
573 | wake_up_interruptible(&ch->close_wait); |
574 | |
575 | |
576 | restore_flags(flags); |
577 | |
578 | } /* End if ch != NULL */ |
579 | |
580 | } /* End pc_close */ |
581 | |
582 | /* ------------------ Begin shutdown ------------------------- */ |
583 | |
584 | static void shutdown(struct channel *ch) |
585 | { /* Begin shutdown */ |
586 | |
587 | unsigned long flags; |
588 | struct tty_struct *tty; |
589 | volatile struct board_chan *bc; |
590 | |
591 | if (!(ch->asyncflags & ASYNC_INITIALIZED)) |
592 | return; |
593 | |
594 | save_flags(flags); |
595 | cli(); |
596 | globalwinon(ch); |
597 | |
598 | bc = ch->brdchan; |
599 | |
600 | /* ------------------------------------------------------------------ |
601 | In order for an event to be generated on the receipt of data the |
602 | idata flag must be set. Since we are shutting down, this is not |
603 | necessary clear this flag. |
604 | --------------------------------------------------------------------- */ |
605 | |
606 | if (bc) |
607 | bc->idata = 0; |
608 | |
609 | tty = ch->tty; |
610 | |
611 | /* ---------------------------------------------------------------- |
612 | If we're a modem control device and HUPCL is on, drop RTS & DTR. |
613 | ------------------------------------------------------------------ */ |
614 | |
615 | if (tty->termios->c_cflag & HUPCL) |
616 | { |
617 | ch->omodem &= ~(ch->m_rts | ch->m_dtr); |
618 | fepcmd(ch, SETMODEM, 0, ch->m_dtr | ch->m_rts, 10, 1); |
619 | } |
620 | |
621 | memoff(ch); |
622 | |
623 | /* ------------------------------------------------------------------ |
624 | The channel has officialy been closed. The next time it is opened |
625 | it will have to reinitialized. Set a flag to indicate this. |
626 | ---------------------------------------------------------------------- */ |
627 | |
628 | /* Prevent future Digi programmed interrupts from coming active */ |
629 | |
630 | ch->asyncflags &= ~ASYNC_INITIALIZED; |
631 | restore_flags(flags); |
632 | |
633 | } /* End shutdown */ |
634 | |
635 | /* ------------------ Begin pc_hangup ------------------------- */ |
636 | |
637 | static void pc_hangup(struct tty_struct *tty) |
638 | { /* Begin pc_hangup */ |
639 | |
640 | struct channel *ch; |
641 | |
642 | /* --------------------------------------------------------- |
643 | verifyChannel returns the channel from the tty struct |
644 | if it is valid. This serves as a sanity check. |
645 | ------------------------------------------------------------- */ |
646 | |
647 | if ((ch = verifyChannel(tty)) != NULL) |
648 | { /* Begin if ch != NULL */ |
649 | |
650 | unsigned long flags; |
651 | |
652 | save_flags(flags); |
653 | cli(); |
654 | if (tty->driver->flush_buffer) |
655 | tty->driver->flush_buffer(tty); |
656 | tty_ldisc_flush(tty); |
657 | shutdown(ch); |
658 | |
659 | ch->tty = NULL; |
660 | ch->event = 0; |
661 | ch->count = 0; |
662 | restore_flags(flags); |
663 | ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED); |
664 | wake_up_interruptible(&ch->open_wait); |
665 | |
666 | } /* End if ch != NULL */ |
667 | |
668 | } /* End pc_hangup */ |
669 | |
670 | /* ------------------ Begin pc_write ------------------------- */ |
671 | |
672 | static int pc_write(struct tty_struct * tty, |
673 | const unsigned char *buf, int bytesAvailable) |
674 | { /* Begin pc_write */ |
675 | |
676 | register unsigned int head, tail; |
677 | register int dataLen; |
678 | register int size; |
679 | register int amountCopied; |
680 | |
681 | |
682 | struct channel *ch; |
683 | unsigned long flags; |
684 | int remain; |
685 | volatile struct board_chan *bc; |
686 | |
687 | |
688 | /* ---------------------------------------------------------------- |
689 | pc_write is primarily called directly by the kernel routine |
690 | tty_write (Though it can also be called by put_char) found in |
691 | tty_io.c. pc_write is passed a line discipline buffer where |
692 | the data to be written out is stored. The line discipline |
693 | implementation itself is done at the kernel level and is not |
694 | brought into the driver. |
695 | ------------------------------------------------------------------- */ |
696 | |
697 | /* --------------------------------------------------------- |
698 | verifyChannel returns the channel from the tty struct |
699 | if it is valid. This serves as a sanity check. |
700 | ------------------------------------------------------------- */ |
701 | |
702 | if ((ch = verifyChannel(tty)) == NULL) |
703 | return 0; |
704 | |
705 | /* Make a pointer to the channel data structure found on the board. */ |
706 | |
707 | bc = ch->brdchan; |
708 | size = ch->txbufsize; |
709 | |
710 | amountCopied = 0; |
711 | save_flags(flags); |
712 | cli(); |
713 | |
714 | globalwinon(ch); |
715 | |
716 | head = bc->tin & (size - 1); |
717 | tail = bc->tout; |
718 | |
719 | if (tail != bc->tout) |
720 | tail = bc->tout; |
721 | tail &= (size - 1); |
722 | |
723 | /* If head >= tail, head has not wrapped around. */ |
724 | if (head >= tail) |
725 | { /* Begin head has not wrapped */ |
726 | |
727 | /* --------------------------------------------------------------- |
728 | remain (much like dataLen above) represents the total amount of |
729 | space available on the card for data. Here dataLen represents |
730 | the space existing between the head pointer and the end of |
731 | buffer. This is important because a memcpy cannot be told to |
732 | automatically wrap around when it hits the buffer end. |
733 | ------------------------------------------------------------------ */ |
734 | |
735 | dataLen = size - head; |
736 | remain = size - (head - tail) - 1; |
737 | |
738 | } /* End head has not wrapped */ |
739 | else |
740 | { /* Begin head has wrapped around */ |
741 | |
742 | remain = tail - head - 1; |
743 | dataLen = remain; |
744 | |
745 | } /* End head has wrapped around */ |
746 | |
747 | /* ------------------------------------------------------------------- |
748 | Check the space on the card. If we have more data than |
749 | space; reduce the amount of data to fit the space. |
750 | ---------------------------------------------------------------------- */ |
751 | |
752 | bytesAvailable = min(remain, bytesAvailable); |
753 | |
754 | txwinon(ch); |
755 | while (bytesAvailable > 0) |
756 | { /* Begin while there is data to copy onto card */ |
757 | |
758 | /* ----------------------------------------------------------------- |
759 | If head is not wrapped, the below will make sure the first |
760 | data copy fills to the end of card buffer. |
761 | ------------------------------------------------------------------- */ |
762 | |
763 | dataLen = min(bytesAvailable, dataLen); |
764 | memcpy(ch->txptr + head, buf, dataLen); |
765 | buf += dataLen; |
766 | head += dataLen; |
767 | amountCopied += dataLen; |
768 | bytesAvailable -= dataLen; |
769 | |
770 | if (head >= size) |
771 | { |
772 | head = 0; |
773 | dataLen = tail; |
774 | } |
775 | |
776 | } /* End while there is data to copy onto card */ |
777 | |
778 | ch->statusflags |= TXBUSY; |
779 | globalwinon(ch); |
780 | bc->tin = head; |
781 | |
782 | if ((ch->statusflags & LOWWAIT) == 0) |
783 | { |
784 | ch->statusflags |= LOWWAIT; |
785 | bc->ilow = 1; |
786 | } |
787 | memoff(ch); |
788 | restore_flags(flags); |
789 | |
790 | return(amountCopied); |
791 | |
792 | } /* End pc_write */ |
793 | |
794 | /* ------------------ Begin pc_put_char ------------------------- */ |
795 | |
796 | static void pc_put_char(struct tty_struct *tty, unsigned char c) |
797 | { /* Begin pc_put_char */ |
798 | |
799 | |
800 | pc_write(tty, &c, 1); |
801 | return; |
802 | |
803 | } /* End pc_put_char */ |
804 | |
805 | /* ------------------ Begin pc_write_room ------------------------- */ |
806 | |
807 | static int pc_write_room(struct tty_struct *tty) |
808 | { /* Begin pc_write_room */ |
809 | |
810 | int remain; |
811 | struct channel *ch; |
812 | unsigned long flags; |
813 | unsigned int head, tail; |
814 | volatile struct board_chan *bc; |
815 | |
816 | remain = 0; |
817 | |
818 | /* --------------------------------------------------------- |
819 | verifyChannel returns the channel from the tty struct |
820 | if it is valid. This serves as a sanity check. |
821 | ------------------------------------------------------------- */ |
822 | |
823 | if ((ch = verifyChannel(tty)) != NULL) |
824 | { |
825 | save_flags(flags); |
826 | cli(); |
827 | globalwinon(ch); |
828 | |
829 | bc = ch->brdchan; |
830 | head = bc->tin & (ch->txbufsize - 1); |
831 | tail = bc->tout; |
832 | |
833 | if (tail != bc->tout) |
834 | tail = bc->tout; |
835 | /* Wrap tail if necessary */ |
836 | tail &= (ch->txbufsize - 1); |
837 | |
838 | if ((remain = tail - head - 1) < 0 ) |
839 | remain += ch->txbufsize; |
840 | |
841 | if (remain && (ch->statusflags & LOWWAIT) == 0) |
842 | { |
843 | ch->statusflags |= LOWWAIT; |
844 | bc->ilow = 1; |
845 | } |
846 | memoff(ch); |
847 | restore_flags(flags); |
848 | } |
849 | |
850 | /* Return how much room is left on card */ |
851 | return remain; |
852 | |
853 | } /* End pc_write_room */ |
854 | |
855 | /* ------------------ Begin pc_chars_in_buffer ---------------------- */ |
856 | |
857 | static int pc_chars_in_buffer(struct tty_struct *tty) |
858 | { /* Begin pc_chars_in_buffer */ |
859 | |
860 | int chars; |
861 | unsigned int ctail, head, tail; |
862 | int remain; |
863 | unsigned long flags; |
864 | struct channel *ch; |
865 | volatile struct board_chan *bc; |
866 | |
867 | |
868 | /* --------------------------------------------------------- |
869 | verifyChannel returns the channel from the tty struct |
870 | if it is valid. This serves as a sanity check. |
871 | ------------------------------------------------------------- */ |
872 | |
873 | if ((ch = verifyChannel(tty)) == NULL) |
874 | return(0); |
875 | |
876 | save_flags(flags); |
877 | cli(); |
878 | globalwinon(ch); |
879 | |
880 | bc = ch->brdchan; |
881 | tail = bc->tout; |
882 | head = bc->tin; |
883 | ctail = ch->mailbox->cout; |
884 | |
885 | if (tail == head && ch->mailbox->cin == ctail && bc->tbusy == 0) |
886 | chars = 0; |
887 | else |
888 | { /* Begin if some space on the card has been used */ |
889 | |
890 | head = bc->tin & (ch->txbufsize - 1); |
891 | tail &= (ch->txbufsize - 1); |
892 | |
893 | /* -------------------------------------------------------------- |
894 | The logic here is basically opposite of the above pc_write_room |
895 | here we are finding the amount of bytes in the buffer filled. |
896 | Not the amount of bytes empty. |
897 | ------------------------------------------------------------------- */ |
898 | |
899 | if ((remain = tail - head - 1) < 0 ) |
900 | remain += ch->txbufsize; |
901 | |
902 | chars = (int)(ch->txbufsize - remain); |
903 | |
904 | /* ------------------------------------------------------------- |
905 | Make it possible to wakeup anything waiting for output |
906 | in tty_ioctl.c, etc. |
907 | |
908 | If not already set. Setup an event to indicate when the |
909 | transmit buffer empties |
910 | ----------------------------------------------------------------- */ |
911 | |
912 | if (!(ch->statusflags & EMPTYWAIT)) |
913 | setup_empty_event(tty,ch); |
914 | |
915 | } /* End if some space on the card has been used */ |
916 | |
917 | memoff(ch); |
918 | restore_flags(flags); |
919 | |
920 | /* Return number of characters residing on card. */ |
921 | return(chars); |
922 | |
923 | } /* End pc_chars_in_buffer */ |
924 | |
925 | /* ------------------ Begin pc_flush_buffer ---------------------- */ |
926 | |
927 | static void pc_flush_buffer(struct tty_struct *tty) |
928 | { /* Begin pc_flush_buffer */ |
929 | |
930 | unsigned int tail; |
931 | unsigned long flags; |
932 | struct channel *ch; |
933 | volatile struct board_chan *bc; |
934 | |
935 | |
936 | /* --------------------------------------------------------- |
937 | verifyChannel returns the channel from the tty struct |
938 | if it is valid. This serves as a sanity check. |
939 | ------------------------------------------------------------- */ |
940 | |
941 | if ((ch = verifyChannel(tty)) == NULL) |
942 | return; |
943 | |
944 | save_flags(flags); |
945 | cli(); |
946 | |
947 | globalwinon(ch); |
948 | |
949 | bc = ch->brdchan; |
950 | tail = bc->tout; |
951 | |
952 | /* Have FEP move tout pointer; effectively flushing transmit buffer */ |
953 | |
954 | fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0); |
955 | |
956 | memoff(ch); |
957 | restore_flags(flags); |
958 | |
959 | wake_up_interruptible(&tty->write_wait); |
960 | tty_wakeup(tty); |
961 | |
962 | } /* End pc_flush_buffer */ |
963 | |
964 | /* ------------------ Begin pc_flush_chars ---------------------- */ |
965 | |
966 | static void pc_flush_chars(struct tty_struct *tty) |
967 | { /* Begin pc_flush_chars */ |
968 | |
969 | struct channel * ch; |
970 | |
971 | /* --------------------------------------------------------- |
972 | verifyChannel returns the channel from the tty struct |
973 | if it is valid. This serves as a sanity check. |
974 | ------------------------------------------------------------- */ |
975 | |
976 | if ((ch = verifyChannel(tty)) != NULL) |
977 | { |
978 | unsigned long flags; |
979 | |
980 | save_flags(flags); |
981 | cli(); |
982 | |
983 | /* ---------------------------------------------------------------- |
984 | If not already set and the transmitter is busy setup an event |
985 | to indicate when the transmit empties. |
986 | ------------------------------------------------------------------- */ |
987 | |
988 | if ((ch->statusflags & TXBUSY) && !(ch->statusflags & EMPTYWAIT)) |
989 | setup_empty_event(tty,ch); |
990 | |
991 | restore_flags(flags); |
992 | } |
993 | |
994 | } /* End pc_flush_chars */ |
995 | |
996 | /* ------------------ Begin block_til_ready ---------------------- */ |
997 | |
998 | static int block_til_ready(struct tty_struct *tty, |
999 | struct file *filp, struct channel *ch) |
1000 | { /* Begin block_til_ready */ |
1001 | |
1002 | DECLARE_WAITQUEUE(wait,current); |
1003 | int retval, do_clocal = 0; |
1004 | unsigned long flags; |
1005 | |
1006 | |
1007 | if (tty_hung_up_p(filp)) |
1008 | { |
1009 | if (ch->asyncflags & ASYNC_HUP_NOTIFY) |
1010 | retval = -EAGAIN; |
1011 | else |
1012 | retval = -ERESTARTSYS; |
1013 | return(retval); |
1014 | } |
1015 | |
1016 | /* ----------------------------------------------------------------- |
1017 | If the device is in the middle of being closed, then block |
1018 | until it's done, and then try again. |
1019 | -------------------------------------------------------------------- */ |
1020 | if (ch->asyncflags & ASYNC_CLOSING) |
1021 | { |
1022 | interruptible_sleep_on(&ch->close_wait); |
1023 | |
1024 | if (ch->asyncflags & ASYNC_HUP_NOTIFY) |
1025 | return -EAGAIN; |
1026 | else |
1027 | return -ERESTARTSYS; |
1028 | } |
1029 | |
1030 | if (filp->f_flags & O_NONBLOCK) |
1031 | { |
1032 | /* ----------------------------------------------------------------- |
1033 | If non-blocking mode is set, then make the check up front |
1034 | and then exit. |
1035 | -------------------------------------------------------------------- */ |
1036 | |
1037 | ch->asyncflags |= ASYNC_NORMAL_ACTIVE; |
1038 | |
1039 | return 0; |
1040 | } |
1041 | |
1042 | |
1043 | if (tty->termios->c_cflag & CLOCAL) |
1044 | do_clocal = 1; |
1045 | |
1046 | /* Block waiting for the carrier detect and the line to become free */ |
1047 | |
1048 | retval = 0; |
1049 | add_wait_queue(&ch->open_wait, &wait); |
1050 | save_flags(flags); |
1051 | cli(); |
1052 | |
1053 | |
1054 | /* We dec count so that pc_close will know when to free things */ |
1055 | if (!tty_hung_up_p(filp)) |
1056 | ch->count--; |
1057 | |
1058 | restore_flags(flags); |
1059 | |
1060 | ch->blocked_open++; |
1061 | |
1062 | while(1) |
1063 | { /* Begin forever while */ |
1064 | |
1065 | set_current_state(TASK_INTERRUPTIBLE); |
1066 | |
1067 | if (tty_hung_up_p(filp) || |
1068 | !(ch->asyncflags & ASYNC_INITIALIZED)) |
1069 | { |
1070 | if (ch->asyncflags & ASYNC_HUP_NOTIFY) |
1071 | retval = -EAGAIN; |
1072 | else |
1073 | retval = -ERESTARTSYS; |
1074 | break; |
1075 | } |
1076 | |
1077 | if (!(ch->asyncflags & ASYNC_CLOSING) && |
1078 | (do_clocal || (ch->imodem & ch->dcd))) |
1079 | break; |
1080 | |
1081 | if (signal_pending(current)) |
1082 | { |
1083 | retval = -ERESTARTSYS; |
1084 | break; |
1085 | } |
1086 | |
1087 | /* --------------------------------------------------------------- |
1088 | Allow someone else to be scheduled. We will occasionally go |
1089 | through this loop until one of the above conditions change. |
1090 | The below schedule call will allow other processes to enter and |
1091 | prevent this loop from hogging the cpu. |
1092 | ------------------------------------------------------------------ */ |
1093 | schedule(); |
1094 | |
1095 | } /* End forever while */ |
1096 | |
1097 | current->state = TASK_RUNNING; |
1098 | remove_wait_queue(&ch->open_wait, &wait); |
1099 | cli(); |
1100 | if (!tty_hung_up_p(filp)) |
1101 | ch->count++; |
1102 | restore_flags(flags); |
1103 | |
1104 | ch->blocked_open--; |
1105 | |
1106 | if (retval) |
1107 | return retval; |
1108 | |
1109 | ch->asyncflags |= ASYNC_NORMAL_ACTIVE; |
1110 | |
1111 | return 0; |
1112 | |
1113 | } /* End block_til_ready */ |
1114 | |
1115 | /* ------------------ Begin pc_open ---------------------- */ |
1116 | |
1117 | static int pc_open(struct tty_struct *tty, struct file * filp) |
1118 | { /* Begin pc_open */ |
1119 | |
1120 | struct channel *ch; |
1121 | unsigned long flags; |
1122 | int line, retval, boardnum; |
1123 | volatile struct board_chan *bc; |
1124 | volatile unsigned int head; |
1125 | |
1126 | line = tty->index; |
1127 | if (line < 0 || line >= nbdevs) |
1128 | { |
1129 | printk(KERN_ERR "<Error> - pc_open : line out of range in pc_open\n"); |
1130 | tty->driver_data = NULL; |
1131 | return(-ENODEV); |
1132 | } |
1133 | |
1134 | |
1135 | ch = &digi_channels[line]; |
1136 | boardnum = ch->boardnum; |
1137 | |
1138 | /* Check status of board configured in system. */ |
1139 | |
1140 | /* ----------------------------------------------------------------- |
1141 | I check to see if the epca_setup routine detected an user error. |
1142 | It might be better to put this in pc_init, but for the moment it |
1143 | goes here. |
1144 | ---------------------------------------------------------------------- */ |
1145 | |
1146 | if (invalid_lilo_config) |
1147 | { |
1148 | if (setup_error_code & INVALID_BOARD_TYPE) |
1149 | printk(KERN_ERR "<Error> - pc_open: Invalid board type specified in LILO command\n"); |
1150 | |
1151 | if (setup_error_code & INVALID_NUM_PORTS) |
1152 | printk(KERN_ERR "<Error> - pc_open: Invalid number of ports specified in LILO command\n"); |
1153 | |
1154 | if (setup_error_code & INVALID_MEM_BASE) |
1155 | printk(KERN_ERR "<Error> - pc_open: Invalid board memory address specified in LILO command\n"); |
1156 | |
1157 | if (setup_error_code & INVALID_PORT_BASE) |
1158 | printk(KERN_ERR "<Error> - pc_open: Invalid board port address specified in LILO command\n"); |
1159 | |
1160 | if (setup_error_code & INVALID_BOARD_STATUS) |
1161 | printk(KERN_ERR "<Error> - pc_open: Invalid board status specified in LILO command\n"); |
1162 | |
1163 | if (setup_error_code & INVALID_ALTPIN) |
1164 | printk(KERN_ERR "<Error> - pc_open: Invalid board altpin specified in LILO command\n"); |
1165 | |
1166 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
1167 | return(-ENODEV); |
1168 | } |
1169 | |
1170 | if ((boardnum >= num_cards) || (boards[boardnum].status == DISABLED)) |
1171 | { |
1172 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
1173 | return(-ENODEV); |
1174 | } |
1175 | |
1176 | if (( bc = ch->brdchan) == 0) |
1177 | { |
1178 | tty->driver_data = NULL; |
1179 | return(-ENODEV); |
1180 | } |
1181 | |
1182 | /* ------------------------------------------------------------------ |
1183 | Every time a channel is opened, increment a counter. This is |
1184 | necessary because we do not wish to flush and shutdown the channel |
1185 | until the last app holding the channel open, closes it. |
1186 | --------------------------------------------------------------------- */ |
1187 | |
1188 | ch->count++; |
1189 | |
1190 | /* ---------------------------------------------------------------- |
1191 | Set a kernel structures pointer to our local channel |
1192 | structure. This way we can get to it when passed only |
1193 | a tty struct. |
1194 | ------------------------------------------------------------------ */ |
1195 | |
1196 | tty->driver_data = ch; |
1197 | |
1198 | /* ---------------------------------------------------------------- |
1199 | If this is the first time the channel has been opened, initialize |
1200 | the tty->termios struct otherwise let pc_close handle it. |
1201 | -------------------------------------------------------------------- */ |
1202 | |
1203 | save_flags(flags); |
1204 | cli(); |
1205 | |
1206 | globalwinon(ch); |
1207 | ch->statusflags = 0; |
1208 | |
1209 | /* Save boards current modem status */ |
1210 | ch->imodem = bc->mstat; |
1211 | |
1212 | /* ---------------------------------------------------------------- |
1213 | Set receive head and tail ptrs to each other. This indicates |
1214 | no data available to read. |
1215 | ----------------------------------------------------------------- */ |
1216 | head = bc->rin; |
1217 | bc->rout = head; |
1218 | |
1219 | /* Set the channels associated tty structure */ |
1220 | ch->tty = tty; |
1221 | |
1222 | /* ----------------------------------------------------------------- |
1223 | The below routine generally sets up parity, baud, flow control |
1224 | issues, etc.... It effect both control flags and input flags. |
1225 | -------------------------------------------------------------------- */ |
1226 | epcaparam(tty,ch); |
1227 | |
1228 | ch->asyncflags |= ASYNC_INITIALIZED; |
1229 | memoff(ch); |
1230 | |
1231 | restore_flags(flags); |
1232 | |
1233 | retval = block_til_ready(tty, filp, ch); |
1234 | if (retval) |
1235 | { |
1236 | return retval; |
1237 | } |
1238 | |
1239 | /* ------------------------------------------------------------- |
1240 | Set this again in case a hangup set it to zero while this |
1241 | open() was waiting for the line... |
1242 | --------------------------------------------------------------- */ |
1243 | ch->tty = tty; |
1244 | |
1245 | save_flags(flags); |
1246 | cli(); |
1247 | globalwinon(ch); |
1248 | |
1249 | /* Enable Digi Data events */ |
1250 | bc->idata = 1; |
1251 | |
1252 | memoff(ch); |
1253 | restore_flags(flags); |
1254 | |
1255 | return 0; |
1256 | |
1257 | } /* End pc_open */ |
1258 | |
1259 | #ifdef MODULE |
1260 | static int __init epca_module_init(void) |
1261 | { /* Begin init_module */ |
1262 | |
1263 | unsigned long flags; |
1264 | |
1265 | save_flags(flags); |
1266 | cli(); |
1267 | |
1268 | pc_init(); |
1269 | |
1270 | restore_flags(flags); |
1271 | |
1272 | return(0); |
1273 | } |
1274 | |
1275 | module_init(epca_module_init); |
1276 | #endif |
1277 | |
1278 | #ifdef ENABLE_PCI |
1279 | static struct pci_driver epca_driver; |
1280 | #endif |
1281 | |
1282 | #ifdef MODULE |
1283 | /* -------------------- Begin cleanup_module ---------------------- */ |
1284 | |
1285 | static void __exit epca_module_exit(void) |
1286 | { |
1287 | |
1288 | int count, crd; |
1289 | struct board_info *bd; |
1290 | struct channel *ch; |
1291 | unsigned long flags; |
1292 | |
1293 | del_timer_sync(&epca_timer); |
1294 | |
1295 | save_flags(flags); |
1296 | cli(); |
1297 | |
1298 | if ((tty_unregister_driver(pc_driver)) || |
1299 | (tty_unregister_driver(pc_info))) |
1300 | { |
1301 | printk(KERN_WARNING "<Error> - DIGI : cleanup_module failed to un-register tty driver\n"); |
1302 | restore_flags(flags); |
1303 | return; |
1304 | } |
1305 | put_tty_driver(pc_driver); |
1306 | put_tty_driver(pc_info); |
1307 | |
1308 | for (crd = 0; crd < num_cards; crd++) |
1309 | { /* Begin for each card */ |
1310 | |
1311 | bd = &boards[crd]; |
1312 | |
1313 | if (!bd) |
1314 | { /* Begin sanity check */ |
1315 | printk(KERN_ERR "<Error> - Digi : cleanup_module failed\n"); |
1316 | return; |
1317 | } /* End sanity check */ |
1318 | |
1319 | ch = card_ptr[crd]; |
1320 | |
1321 | for (count = 0; count < bd->numports; count++, ch++) |
1322 | { /* Begin for each port */ |
1323 | |
1324 | if (ch) |
1325 | { |
1326 | if (ch->tty) |
1327 | tty_hangup(ch->tty); |
1328 | kfree(ch->tmp_buf); |
1329 | } |
1330 | |
1331 | } /* End for each port */ |
1332 | } /* End for each card */ |
1333 | |
1334 | #ifdef ENABLE_PCI |
1335 | pci_unregister_driver (&epca_driver); |
1336 | #endif |
1337 | |
1338 | restore_flags(flags); |
1339 | |
1340 | } |
1341 | module_exit(epca_module_exit); |
1342 | #endif /* MODULE */ |
1343 | |
1344 | static struct tty_operations pc_ops = { |
1345 | .open = pc_open, |
1346 | .close = pc_close, |
1347 | .write = pc_write, |
1348 | .write_room = pc_write_room, |
1349 | .flush_buffer = pc_flush_buffer, |
1350 | .chars_in_buffer = pc_chars_in_buffer, |
1351 | .flush_chars = pc_flush_chars, |
1352 | .put_char = pc_put_char, |
1353 | .ioctl = pc_ioctl, |
1354 | .set_termios = pc_set_termios, |
1355 | .stop = pc_stop, |
1356 | .start = pc_start, |
1357 | .throttle = pc_throttle, |
1358 | .unthrottle = pc_unthrottle, |
1359 | .hangup = pc_hangup, |
1360 | }; |
1361 | |
1362 | static int info_open(struct tty_struct *tty, struct file * filp) |
1363 | { |
1364 | return 0; |
1365 | } |
1366 | |
1367 | static struct tty_operations info_ops = { |
1368 | .open = info_open, |
1369 | .ioctl = info_ioctl, |
1370 | }; |
1371 | |
1372 | /* ------------------ Begin pc_init ---------------------- */ |
1373 | |
1374 | int __init pc_init(void) |
1375 | { /* Begin pc_init */ |
1376 | |
1377 | /* ---------------------------------------------------------------- |
1378 | pc_init is called by the operating system during boot up prior to |
1379 | any open calls being made. In the older versions of Linux (Prior |
1380 | to 2.0.0) an entry is made into tty_io.c. A pointer to the last |
1381 | memory location (from kernel space) used (kmem_start) is passed |
1382 | to pc_init. It is pc_inits responsibility to modify this value |
1383 | for any memory that the Digi driver might need and then return |
1384 | this value to the operating system. For example if the driver |
1385 | wishes to allocate 1K of kernel memory, pc_init would return |
1386 | (kmem_start + 1024). This memory (Between kmem_start and kmem_start |
1387 | + 1024) would then be available for use exclusively by the driver. |
1388 | In this case our driver does not allocate any of this kernel |
1389 | memory. |
1390 | ------------------------------------------------------------------*/ |
1391 | |
1392 | ulong flags; |
1393 | int crd; |
1394 | struct board_info *bd; |
1395 | unsigned char board_id = 0; |
1396 | |
1397 | #ifdef ENABLE_PCI |
1398 | int pci_boards_found, pci_count; |
1399 | |
1400 | pci_count = 0; |
1401 | #endif /* ENABLE_PCI */ |
1402 | |
1403 | pc_driver = alloc_tty_driver(MAX_ALLOC); |
1404 | if (!pc_driver) |
1405 | return -ENOMEM; |
1406 | |
1407 | pc_info = alloc_tty_driver(MAX_ALLOC); |
1408 | if (!pc_info) { |
1409 | put_tty_driver(pc_driver); |
1410 | return -ENOMEM; |
1411 | } |
1412 | |
1413 | /* ----------------------------------------------------------------------- |
1414 | If epca_setup has not been ran by LILO set num_cards to defaults; copy |
1415 | board structure defined by digiConfig into drivers board structure. |
1416 | Note : If LILO has ran epca_setup then epca_setup will handle defining |
1417 | num_cards as well as copying the data into the board structure. |
1418 | -------------------------------------------------------------------------- */ |
1419 | if (!liloconfig) |
1420 | { /* Begin driver has been configured via. epcaconfig */ |
1421 | |
1422 | nbdevs = NBDEVS; |
1423 | num_cards = NUMCARDS; |
1424 | memcpy((void *)&boards, (void *)&static_boards, |
1425 | (sizeof(struct board_info) * NUMCARDS)); |
1426 | } /* End driver has been configured via. epcaconfig */ |
1427 | |
1428 | /* ----------------------------------------------------------------- |
1429 | Note : If lilo was used to configure the driver and the |
1430 | ignore epcaconfig option was choosen (digiepca=2) then |
1431 | nbdevs and num_cards will equal 0 at this point. This is |
1432 | okay; PCI cards will still be picked up if detected. |
1433 | --------------------------------------------------------------------- */ |
1434 | |
1435 | /* ----------------------------------------------------------- |
1436 | Set up interrupt, we will worry about memory allocation in |
1437 | post_fep_init. |
1438 | --------------------------------------------------------------- */ |
1439 | |
1440 | |
1441 | printk(KERN_INFO "DIGI epca driver version %s loaded.\n",VERSION); |
1442 | |
1443 | #ifdef ENABLE_PCI |
1444 | |
1445 | /* ------------------------------------------------------------------ |
1446 | NOTE : This code assumes that the number of ports found in |
1447 | the boards array is correct. This could be wrong if |
1448 | the card in question is PCI (And therefore has no ports |
1449 | entry in the boards structure.) The rest of the |
1450 | information will be valid for PCI because the beginning |
1451 | of pc_init scans for PCI and determines i/o and base |
1452 | memory addresses. I am not sure if it is possible to |
1453 | read the number of ports supported by the card prior to |
1454 | it being booted (Since that is the state it is in when |
1455 | pc_init is run). Because it is not possible to query the |
1456 | number of supported ports until after the card has booted; |
1457 | we are required to calculate the card_ptrs as the card is |
1458 | is initialized (Inside post_fep_init). The negative thing |
1459 | about this approach is that digiDload's call to GET_INFO |
1460 | will have a bad port value. (Since this is called prior |
1461 | to post_fep_init.) |
1462 | |
1463 | --------------------------------------------------------------------- */ |
1464 | |
1465 | pci_boards_found = 0; |
1466 | if(num_cards < MAXBOARDS) |
1467 | pci_boards_found += init_PCI(); |
1468 | num_cards += pci_boards_found; |
1469 | |
1470 | #endif /* ENABLE_PCI */ |
1471 | |
1472 | pc_driver->owner = THIS_MODULE; |
1473 | pc_driver->name = "ttyD"; |
1474 | pc_driver->devfs_name = "tts/D"; |
1475 | pc_driver->major = DIGI_MAJOR; |
1476 | pc_driver->minor_start = 0; |
1477 | pc_driver->type = TTY_DRIVER_TYPE_SERIAL; |
1478 | pc_driver->subtype = SERIAL_TYPE_NORMAL; |
1479 | pc_driver->init_termios = tty_std_termios; |
1480 | pc_driver->init_termios.c_iflag = 0; |
1481 | pc_driver->init_termios.c_oflag = 0; |
1482 | pc_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
1483 | pc_driver->init_termios.c_lflag = 0; |
1484 | pc_driver->flags = TTY_DRIVER_REAL_RAW; |
1485 | tty_set_operations(pc_driver, &pc_ops); |
1486 | |
1487 | pc_info->owner = THIS_MODULE; |
1488 | pc_info->name = "digi_ctl"; |
1489 | pc_info->major = DIGIINFOMAJOR; |
1490 | pc_info->minor_start = 0; |
1491 | pc_info->type = TTY_DRIVER_TYPE_SERIAL; |
1492 | pc_info->subtype = SERIAL_TYPE_INFO; |
1493 | pc_info->init_termios = tty_std_termios; |
1494 | pc_info->init_termios.c_iflag = 0; |
1495 | pc_info->init_termios.c_oflag = 0; |
1496 | pc_info->init_termios.c_lflag = 0; |
1497 | pc_info->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; |
1498 | pc_info->flags = TTY_DRIVER_REAL_RAW; |
1499 | tty_set_operations(pc_info, &info_ops); |
1500 | |
1501 | |
1502 | save_flags(flags); |
1503 | cli(); |
1504 | |
1505 | for (crd = 0; crd < num_cards; crd++) |
1506 | { /* Begin for each card */ |
1507 | |
1508 | /* ------------------------------------------------------------------ |
1509 | This is where the appropriate memory handlers for the hardware is |
1510 | set. Everything at runtime blindly jumps through these vectors. |
1511 | ---------------------------------------------------------------------- */ |
1512 | |
1513 | /* defined in epcaconfig.h */ |
1514 | bd = &boards[crd]; |
1515 | |
1516 | switch (bd->type) |
1517 | { /* Begin switch on bd->type {board type} */ |
1518 | case PCXEM: |
1519 | case EISAXEM: |
1520 | bd->memwinon = pcxem_memwinon ; |
1521 | bd->memwinoff = pcxem_memwinoff ; |
1522 | bd->globalwinon = pcxem_globalwinon ; |
1523 | bd->txwinon = pcxem_txwinon ; |
1524 | bd->rxwinon = pcxem_rxwinon ; |
1525 | bd->memoff = pcxem_memoff ; |
1526 | bd->assertgwinon = dummy_assertgwinon; |
1527 | bd->assertmemoff = dummy_assertmemoff; |
1528 | break; |
1529 | |
1530 | case PCIXEM: |
1531 | case PCIXRJ: |
1532 | case PCIXR: |
1533 | bd->memwinon = dummy_memwinon; |
1534 | bd->memwinoff = dummy_memwinoff; |
1535 | bd->globalwinon = dummy_globalwinon; |
1536 | bd->txwinon = dummy_txwinon; |
1537 | bd->rxwinon = dummy_rxwinon; |
1538 | bd->memoff = dummy_memoff; |
1539 | bd->assertgwinon = dummy_assertgwinon; |
1540 | bd->assertmemoff = dummy_assertmemoff; |
1541 | break; |
1542 | |
1543 | case PCXE: |
1544 | case PCXEVE: |
1545 | |
1546 | bd->memwinon = pcxe_memwinon; |
1547 | bd->memwinoff = pcxe_memwinoff; |
1548 | bd->globalwinon = pcxe_globalwinon; |
1549 | bd->txwinon = pcxe_txwinon; |
1550 | bd->rxwinon = pcxe_rxwinon; |
1551 | bd->memoff = pcxe_memoff; |
1552 | bd->assertgwinon = dummy_assertgwinon; |
1553 | bd->assertmemoff = dummy_assertmemoff; |
1554 | break; |
1555 | |
1556 | case PCXI: |
1557 | case PC64XE: |
1558 | |
1559 | bd->memwinon = pcxi_memwinon; |
1560 | bd->memwinoff = pcxi_memwinoff; |
1561 | bd->globalwinon = pcxi_globalwinon; |
1562 | bd->txwinon = pcxi_txwinon; |
1563 | bd->rxwinon = pcxi_rxwinon; |
1564 | bd->memoff = pcxi_memoff; |
1565 | bd->assertgwinon = pcxi_assertgwinon; |
1566 | bd->assertmemoff = pcxi_assertmemoff; |
1567 | break; |
1568 | |
1569 | default: |
1570 | break; |
1571 | |
1572 | } /* End switch on bd->type */ |
1573 | |
1574 | /* --------------------------------------------------------------- |
1575 | Some cards need a memory segment to be defined for use in |
1576 | transmit and receive windowing operations. These boards |
1577 | are listed in the below switch. In the case of the XI the |
1578 | amount of memory on the board is variable so the memory_seg |
1579 | is also variable. This code determines what they segment |
1580 | should be. |
1581 | ----------------------------------------------------------------- */ |
1582 | |
1583 | switch (bd->type) |
1584 | { /* Begin switch on bd->type {board type} */ |
1585 | |
1586 | case PCXE: |
1587 | case PCXEVE: |
1588 | case PC64XE: |
1589 | bd->memory_seg = 0xf000; |
1590 | break; |
1591 | |
1592 | case PCXI: |
1593 | board_id = inb((int)bd->port); |
1594 | if ((board_id & 0x1) == 0x1) |
1595 | { /* Begin it's an XI card */ |
1596 | |
1597 | /* Is it a 64K board */ |
1598 | if ((board_id & 0x30) == 0) |
1599 | bd->memory_seg = 0xf000; |
1600 | |
1601 | /* Is it a 128K board */ |
1602 | if ((board_id & 0x30) == 0x10) |
1603 | bd->memory_seg = 0xe000; |
1604 | |
1605 | /* Is is a 256K board */ |
1606 | if ((board_id & 0x30) == 0x20) |
1607 | bd->memory_seg = 0xc000; |
1608 | |
1609 | /* Is it a 512K board */ |
1610 | if ((board_id & 0x30) == 0x30) |
1611 | bd->memory_seg = 0x8000; |
1612 | |
1613 | } /* End it is an XI card */ |
1614 | else |
1615 | { |
1616 | printk(KERN_ERR "<Error> - Board at 0x%x doesn't appear to be an XI\n",(int)bd->port); |
1617 | } |
1618 | break; |
1619 | |
1620 | } /* End switch on bd->type */ |
1621 | |
1622 | } /* End for each card */ |
1623 | |
1624 | if (tty_register_driver(pc_driver)) |
1625 | panic("Couldn't register Digi PC/ driver"); |
1626 | |
1627 | if (tty_register_driver(pc_info)) |
1628 | panic("Couldn't register Digi PC/ info "); |
1629 | |
1630 | /* ------------------------------------------------------------------- |
1631 | Start up the poller to check for events on all enabled boards |
1632 | ---------------------------------------------------------------------- */ |
1633 | |
1634 | init_timer(&epca_timer); |
1635 | epca_timer.function = epcapoll; |
1636 | mod_timer(&epca_timer, jiffies + HZ/25); |
1637 | |
1638 | restore_flags(flags); |
1639 | |
1640 | return 0; |
1641 | |
1642 | } /* End pc_init */ |
1643 | |
1644 | /* ------------------ Begin post_fep_init ---------------------- */ |
1645 | |
1646 | static void post_fep_init(unsigned int crd) |
1647 | { /* Begin post_fep_init */ |
1648 | |
1649 | int i; |
1650 | unchar *memaddr; |
1651 | volatile struct global_data *gd; |
1652 | struct board_info *bd; |
1653 | volatile struct board_chan *bc; |
1654 | struct channel *ch; |
1655 | int shrinkmem = 0, lowwater ; |
1656 | |
1657 | /* ------------------------------------------------------------- |
1658 | This call is made by the user via. the ioctl call DIGI_INIT. |
1659 | It is responsible for setting up all the card specific stuff. |
1660 | ---------------------------------------------------------------- */ |
1661 | bd = &boards[crd]; |
1662 | |
1663 | /* ----------------------------------------------------------------- |
1664 | If this is a PCI board, get the port info. Remember PCI cards |
1665 | do not have entries into the epcaconfig.h file, so we can't get |
1666 | the number of ports from it. Unfortunetly, this means that anyone |
1667 | doing a DIGI_GETINFO before the board has booted will get an invalid |
1668 | number of ports returned (It should return 0). Calls to DIGI_GETINFO |
1669 | after DIGI_INIT has been called will return the proper values. |
1670 | ------------------------------------------------------------------- */ |
1671 | |
1672 | if (bd->type >= PCIXEM) /* If the board in question is PCI */ |
1673 | { /* Begin get PCI number of ports */ |
1674 | |
1675 | /* -------------------------------------------------------------------- |
1676 | Below we use XEMPORTS as a memory offset regardless of which PCI |
1677 | card it is. This is because all of the supported PCI cards have |
1678 | the same memory offset for the channel data. This will have to be |
1679 | changed if we ever develop a PCI/XE card. NOTE : The FEP manual |
1680 | states that the port offset is 0xC22 as opposed to 0xC02. This is |
1681 | only true for PC/XE, and PC/XI cards; not for the XEM, or CX series. |
1682 | On the PCI cards the number of ports is determined by reading a |
1683 | ID PROM located in the box attached to the card. The card can then |
1684 | determine the index the id to determine the number of ports available. |
1685 | (FYI - The id should be located at 0x1ac (And may use up to 4 bytes |
1686 | if the box in question is a XEM or CX)). |
1687 | ------------------------------------------------------------------------ */ |
1688 | |
1689 | bd->numports = (unsigned short)*(unsigned char *)bus_to_virt((unsigned long) |
1690 | (bd->re_map_membase + XEMPORTS)); |
1691 | |
1692 | |
1693 | epcaassert(bd->numports <= 64,"PCI returned a invalid number of ports"); |
1694 | nbdevs += (bd->numports); |
1695 | |
1696 | } /* End get PCI number of ports */ |
1697 | |
1698 | if (crd != 0) |
1699 | card_ptr[crd] = card_ptr[crd-1] + boards[crd-1].numports; |
1700 | else |
1701 | card_ptr[crd] = &digi_channels[crd]; /* <- For card 0 only */ |
1702 | |
1703 | ch = card_ptr[crd]; |
1704 | |
1705 | |
1706 | epcaassert(ch <= &digi_channels[nbdevs - 1], "ch out of range"); |
1707 | |
1708 | memaddr = (unchar *)bd->re_map_membase; |
1709 | |
1710 | /* |
1711 | The below command is necessary because newer kernels (2.1.x and |
1712 | up) do not have a 1:1 virtual to physical mapping. The below |
1713 | call adjust for that. |
1714 | */ |
1715 | |
1716 | memaddr = (unsigned char *)bus_to_virt((unsigned long)memaddr); |
1717 | |
1718 | /* ----------------------------------------------------------------- |
1719 | The below assignment will set bc to point at the BEGINING of |
1720 | the cards channel structures. For 1 card there will be between |
1721 | 8 and 64 of these structures. |
1722 | -------------------------------------------------------------------- */ |
1723 | |
1724 | bc = (volatile struct board_chan *)((ulong)memaddr + CHANSTRUCT); |
1725 | |
1726 | /* ------------------------------------------------------------------- |
1727 | The below assignment will set gd to point at the BEGINING of |
1728 | global memory address 0xc00. The first data in that global |
1729 | memory actually starts at address 0xc1a. The command in |
1730 | pointer begins at 0xd10. |
1731 | ---------------------------------------------------------------------- */ |
1732 | |
1733 | gd = (volatile struct global_data *)((ulong)memaddr + GLOBAL); |
1734 | |
1735 | /* -------------------------------------------------------------------- |
1736 | XEPORTS (address 0xc22) points at the number of channels the |
1737 | card supports. (For 64XE, XI, XEM, and XR use 0xc02) |
1738 | ----------------------------------------------------------------------- */ |
1739 | |
1740 | if (((bd->type == PCXEVE) | (bd->type == PCXE)) && |
1741 | (*(ushort *)((ulong)memaddr + XEPORTS) < 3)) |
1742 | shrinkmem = 1; |
1743 | if (bd->type < PCIXEM) |
1744 | if (!request_region((int)bd->port, 4, board_desc[bd->type])) |
1745 | return; |
1746 | |
1747 | memwinon(bd, 0); |
1748 | |
1749 | /* -------------------------------------------------------------------- |
1750 | Remember ch is the main drivers channels structure, while bc is |
1751 | the cards channel structure. |
1752 | ------------------------------------------------------------------------ */ |
1753 | |
1754 | /* For every port on the card do ..... */ |
1755 | |
1756 | for (i = 0; i < bd->numports; i++, ch++, bc++) |
1757 | { /* Begin for each port */ |
1758 | |
1759 | ch->brdchan = bc; |
1760 | ch->mailbox = gd; |
1761 | INIT_WORK(&ch->tqueue, do_softint, ch); |
1762 | ch->board = &boards[crd]; |
1763 | |
1764 | switch (bd->type) |
1765 | { /* Begin switch bd->type */ |
1766 | |
1767 | /* ---------------------------------------------------------------- |
1768 | Since some of the boards use different bitmaps for their |
1769 | control signals we cannot hard code these values and retain |
1770 | portability. We virtualize this data here. |
1771 | ------------------------------------------------------------------- */ |
1772 | case EISAXEM: |
1773 | case PCXEM: |
1774 | case PCIXEM: |
1775 | case PCIXRJ: |
1776 | case PCIXR: |
1777 | ch->m_rts = 0x02 ; |
1778 | ch->m_dcd = 0x80 ; |
1779 | ch->m_dsr = 0x20 ; |
1780 | ch->m_cts = 0x10 ; |
1781 | ch->m_ri = 0x40 ; |
1782 | ch->m_dtr = 0x01 ; |
1783 | break; |
1784 | |
1785 | case PCXE: |
1786 | case PCXEVE: |
1787 | case PCXI: |
1788 | case PC64XE: |
1789 | ch->m_rts = 0x02 ; |
1790 | ch->m_dcd = 0x08 ; |
1791 | ch->m_dsr = 0x10 ; |
1792 | ch->m_cts = 0x20 ; |
1793 | ch->m_ri = 0x40 ; |
1794 | ch->m_dtr = 0x80 ; |
1795 | break; |
1796 | |
1797 | } /* End switch bd->type */ |
1798 | |
1799 | if (boards[crd].altpin) |
1800 | { |
1801 | ch->dsr = ch->m_dcd; |
1802 | ch->dcd = ch->m_dsr; |
1803 | ch->digiext.digi_flags |= DIGI_ALTPIN; |
1804 | } |
1805 | else |
1806 | { |
1807 | ch->dcd = ch->m_dcd; |
1808 | ch->dsr = ch->m_dsr; |
1809 | } |
1810 | |
1811 | ch->boardnum = crd; |
1812 | ch->channelnum = i; |
1813 | ch->magic = EPCA_MAGIC; |
1814 | ch->tty = NULL; |
1815 | |
1816 | if (shrinkmem) |
1817 | { |
1818 | fepcmd(ch, SETBUFFER, 32, 0, 0, 0); |
1819 | shrinkmem = 0; |
1820 | } |
1821 | |
1822 | switch (bd->type) |
1823 | { /* Begin switch bd->type */ |
1824 | |
1825 | case PCIXEM: |
1826 | case PCIXRJ: |
1827 | case PCIXR: |
1828 | /* Cover all the 2MEG cards */ |
1829 | ch->txptr = memaddr + (((bc->tseg) << 4) & 0x1fffff); |
1830 | ch->rxptr = memaddr + (((bc->rseg) << 4) & 0x1fffff); |
1831 | ch->txwin = FEPWIN | ((bc->tseg) >> 11); |
1832 | ch->rxwin = FEPWIN | ((bc->rseg) >> 11); |
1833 | break; |
1834 | |
1835 | case PCXEM: |
1836 | case EISAXEM: |
1837 | /* Cover all the 32K windowed cards */ |
1838 | /* Mask equal to window size - 1 */ |
1839 | ch->txptr = memaddr + (((bc->tseg) << 4) & 0x7fff); |
1840 | ch->rxptr = memaddr + (((bc->rseg) << 4) & 0x7fff); |
1841 | ch->txwin = FEPWIN | ((bc->tseg) >> 11); |
1842 | ch->rxwin = FEPWIN | ((bc->rseg) >> 11); |
1843 | break; |
1844 | |
1845 | case PCXEVE: |
1846 | case PCXE: |
1847 | ch->txptr = memaddr + (((bc->tseg - bd->memory_seg) << 4) & 0x1fff); |
1848 | ch->txwin = FEPWIN | ((bc->tseg - bd->memory_seg) >> 9); |
1849 | ch->rxptr = memaddr + (((bc->rseg - bd->memory_seg) << 4) & 0x1fff); |
1850 | ch->rxwin = FEPWIN | ((bc->rseg - bd->memory_seg) >>9 ); |
1851 | break; |
1852 | |
1853 | case PCXI: |
1854 | case PC64XE: |
1855 | ch->txptr = memaddr + ((bc->tseg - bd->memory_seg) << 4); |
1856 | ch->rxptr = memaddr + ((bc->rseg - bd->memory_seg) << 4); |
1857 | ch->txwin = ch->rxwin = 0; |
1858 | break; |
1859 | |
1860 | } /* End switch bd->type */ |
1861 | |
1862 | ch->txbufhead = 0; |
1863 | ch->txbufsize = bc->tmax + 1; |
1864 | |
1865 | ch->rxbufhead = 0; |
1866 | ch->rxbufsize = bc->rmax + 1; |
1867 | |
1868 | lowwater = ch->txbufsize >= 2000 ? 1024 : (ch->txbufsize / 2); |
1869 | |
1870 | /* Set transmitter low water mark */ |
1871 | fepcmd(ch, STXLWATER, lowwater, 0, 10, 0); |
1872 | |
1873 | /* Set receiver low water mark */ |
1874 | |
1875 | fepcmd(ch, SRXLWATER, (ch->rxbufsize / 4), 0, 10, 0); |
1876 | |
1877 | /* Set receiver high water mark */ |
1878 | |
1879 | fepcmd(ch, SRXHWATER, (3 * ch->rxbufsize / 4), 0, 10, 0); |
1880 | |
1881 | bc->edelay = 100; |
1882 | bc->idata = 1; |
1883 | |
1884 | ch->startc = bc->startc; |
1885 | ch->stopc = bc->stopc; |
1886 | ch->startca = bc->startca; |
1887 | ch->stopca = bc->stopca; |
1888 | |
1889 | ch->fepcflag = 0; |
1890 | ch->fepiflag = 0; |
1891 | ch->fepoflag = 0; |
1892 | ch->fepstartc = 0; |
1893 | ch->fepstopc = 0; |
1894 | ch->fepstartca = 0; |
1895 | ch->fepstopca = 0; |
1896 | |
1897 | ch->close_delay = 50; |
1898 | ch->count = 0; |
1899 | ch->blocked_open = 0; |
1900 | init_waitqueue_head(&ch->open_wait); |
1901 | init_waitqueue_head(&ch->close_wait); |
1902 | ch->tmp_buf = kmalloc(ch->txbufsize,GFP_KERNEL); |
1903 | if (!(ch->tmp_buf)) |
1904 | { |
1905 | printk(KERN_ERR "POST FEP INIT : kmalloc failed for port 0x%x\n",i); |
1906 | release_region((int)bd->port, 4); |
1907 | while(i-- > 0) |
1908 | kfree((ch--)->tmp_buf); |
1909 | return; |
1910 | } |
1911 | else |
1912 | memset((void *)ch->tmp_buf,0,ch->txbufsize); |
1913 | } /* End for each port */ |
1914 | |
1915 | printk(KERN_INFO |
1916 | "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", |
1917 | VERSION, board_desc[bd->type], (long)bd->port, (long)bd->membase, bd->numports); |
1918 | sprintf(mesg, |
1919 | "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", |
1920 | VERSION, board_desc[bd->type], (long)bd->port, (long)bd->membase, bd->numports); |
1921 | console_print(mesg); |
1922 | |
1923 | memwinoff(bd, 0); |
1924 | |
1925 | } /* End post_fep_init */ |
1926 | |
1927 | /* --------------------- Begin epcapoll ------------------------ */ |
1928 | |
1929 | static void epcapoll(unsigned long ignored) |
1930 | { /* Begin epcapoll */ |
1931 | |
1932 | unsigned long flags; |
1933 | int crd; |
1934 | volatile unsigned int head, tail; |
1935 | struct channel *ch; |
1936 | struct board_info *bd; |
1937 | |
1938 | /* ------------------------------------------------------------------- |
1939 | This routine is called upon every timer interrupt. Even though |
1940 | the Digi series cards are capable of generating interrupts this |
1941 | method of non-looping polling is more efficient. This routine |
1942 | checks for card generated events (Such as receive data, are transmit |
1943 | buffer empty) and acts on those events. |
1944 | ----------------------------------------------------------------------- */ |
1945 | |
1946 | save_flags(flags); |
1947 | cli(); |
1948 | |
1949 | for (crd = 0; crd < num_cards; crd++) |
1950 | { /* Begin for each card */ |
1951 | |
1952 | bd = &boards[crd]; |
1953 | ch = card_ptr[crd]; |
1954 | |
1955 | if ((bd->status == DISABLED) || digi_poller_inhibited) |
1956 | continue; /* Begin loop next interation */ |
1957 | |
1958 | /* ----------------------------------------------------------- |
1959 | assertmemoff is not needed here; indeed it is an empty subroutine. |
1960 | It is being kept because future boards may need this as well as |
1961 | some legacy boards. |
1962 | ---------------------------------------------------------------- */ |
1963 | |
1964 | assertmemoff(ch); |
1965 | |
1966 | globalwinon(ch); |
1967 | |
1968 | /* --------------------------------------------------------------- |
1969 | In this case head and tail actually refer to the event queue not |
1970 | the transmit or receive queue. |
1971 | ------------------------------------------------------------------- */ |
1972 | |
1973 | head = ch->mailbox->ein; |
1974 | tail = ch->mailbox->eout; |
1975 | |
1976 | /* If head isn't equal to tail we have an event */ |
1977 | |
1978 | if (head != tail) |
1979 | doevent(crd); |
1980 | |
1981 | memoff(ch); |
1982 | |
1983 | } /* End for each card */ |
1984 | |
1985 | mod_timer(&epca_timer, jiffies + (HZ / 25)); |
1986 | |
1987 | restore_flags(flags); |
1988 | } /* End epcapoll */ |
1989 | |
1990 | /* --------------------- Begin doevent ------------------------ */ |
1991 | |
1992 | static void doevent(int crd) |
1993 | { /* Begin doevent */ |
1994 | |
1995 | volatile unchar *eventbuf; |
1996 | struct channel *ch, *chan0; |
1997 | static struct tty_struct *tty; |
1998 | volatile struct board_info *bd; |
1999 | volatile struct board_chan *bc; |
2000 | register volatile unsigned int tail, head; |
2001 | register int event, channel; |
2002 | register int mstat, lstat; |
2003 | |
2004 | /* ------------------------------------------------------------------- |
2005 | This subroutine is called by epcapoll when an event is detected |
2006 | in the event queue. This routine responds to those events. |
2007 | --------------------------------------------------------------------- */ |
2008 | |
2009 | bd = &boards[crd]; |
2010 | |
2011 | chan0 = card_ptr[crd]; |
2012 | epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range"); |
2013 | |
2014 | assertgwinon(chan0); |
2015 | |
2016 | while ((tail = chan0->mailbox->eout) != (head = chan0->mailbox->ein)) |
2017 | { /* Begin while something in event queue */ |
2018 | |
2019 | assertgwinon(chan0); |
2020 | |
2021 | eventbuf = (volatile unchar *)bus_to_virt((ulong)(bd->re_map_membase + tail + ISTART)); |
2022 | |
2023 | /* Get the channel the event occurred on */ |
2024 | channel = eventbuf[0]; |
2025 | |
2026 | /* Get the actual event code that occurred */ |
2027 | event = eventbuf[1]; |
2028 | |
2029 | /* ---------------------------------------------------------------- |
2030 | The two assignments below get the current modem status (mstat) |
2031 | and the previous modem status (lstat). These are useful becuase |
2032 | an event could signal a change in modem signals itself. |
2033 | ------------------------------------------------------------------- */ |
2034 | |
2035 | mstat = eventbuf[2]; |
2036 | lstat = eventbuf[3]; |
2037 | |
2038 | ch = chan0 + channel; |
2039 | |
2040 | if ((unsigned)channel >= bd->numports || !ch) |
2041 | { |
2042 | if (channel >= bd->numports) |
2043 | ch = chan0; |
2044 | bc = ch->brdchan; |
2045 | goto next; |
2046 | } |
2047 | |
2048 | if ((bc = ch->brdchan) == NULL) |
2049 | goto next; |
2050 | |
2051 | if (event & DATA_IND) |
2052 | { /* Begin DATA_IND */ |
2053 | |
2054 | receive_data(ch); |
2055 | assertgwinon(ch); |
2056 | |
2057 | } /* End DATA_IND */ |
2058 | /* else *//* Fix for DCD transition missed bug */ |
2059 | if (event & MODEMCHG_IND) |
2060 | { /* Begin MODEMCHG_IND */ |
2061 | |
2062 | /* A modem signal change has been indicated */ |
2063 | |
2064 | ch->imodem = mstat; |
2065 | |
2066 | if (ch->asyncflags & ASYNC_CHECK_CD) |
2067 | { |
2068 | if (mstat & ch->dcd) /* We are now receiving dcd */ |
2069 | wake_up_interruptible(&ch->open_wait); |
2070 | else |
2071 | pc_sched_event(ch, EPCA_EVENT_HANGUP); /* No dcd; hangup */ |
2072 | } |
2073 | |
2074 | } /* End MODEMCHG_IND */ |
2075 | |
2076 | tty = ch->tty; |
2077 | if (tty) |
2078 | { /* Begin if valid tty */ |
2079 | |
2080 | if (event & BREAK_IND) |
2081 | { /* Begin if BREAK_IND */ |
2082 | |
2083 | /* A break has been indicated */ |
2084 | |
2085 | tty->flip.count++; |
2086 | *tty->flip.flag_buf_ptr++ = TTY_BREAK; |
2087 | |
2088 | *tty->flip.char_buf_ptr++ = 0; |
2089 | |
2090 | tty_schedule_flip(tty); |
2091 | |
2092 | } /* End if BREAK_IND */ |
2093 | else |
2094 | if (event & LOWTX_IND) |
2095 | { /* Begin LOWTX_IND */ |
2096 | |
2097 | if (ch->statusflags & LOWWAIT) |
2098 | { /* Begin if LOWWAIT */ |
2099 | |
2100 | ch->statusflags &= ~LOWWAIT; |
2101 | tty_wakeup(tty); |
2102 | wake_up_interruptible(&tty->write_wait); |
2103 | |
2104 | } /* End if LOWWAIT */ |
2105 | |
2106 | } /* End LOWTX_IND */ |
2107 | else |
2108 | if (event & EMPTYTX_IND) |
2109 | { /* Begin EMPTYTX_IND */ |
2110 | |
2111 | /* This event is generated by setup_empty_event */ |
2112 | |
2113 | ch->statusflags &= ~TXBUSY; |
2114 | if (ch->statusflags & EMPTYWAIT) |
2115 | { /* Begin if EMPTYWAIT */ |
2116 | |
2117 | ch->statusflags &= ~EMPTYWAIT; |
2118 | tty_wakeup(tty); |
2119 | |
2120 | wake_up_interruptible(&tty->write_wait); |
2121 | |
2122 | } /* End if EMPTYWAIT */ |
2123 | |
2124 | } /* End EMPTYTX_IND */ |
2125 | |
2126 | } /* End if valid tty */ |
2127 | |
2128 | |
2129 | next: |
2130 | globalwinon(ch); |
2131 | |
2132 | if (!bc) |
2133 | printk(KERN_ERR "<Error> - bc == NULL in doevent!\n"); |
2134 | else |
2135 | bc->idata = 1; |
2136 | |
2137 | chan0->mailbox->eout = (tail + 4) & (IMAX - ISTART - 4); |
2138 | globalwinon(chan0); |
2139 | |
2140 | } /* End while something in event queue */ |
2141 | |
2142 | } /* End doevent */ |
2143 | |
2144 | /* --------------------- Begin fepcmd ------------------------ */ |
2145 | |
2146 | static void fepcmd(struct channel *ch, int cmd, int word_or_byte, |
2147 | int byte2, int ncmds, int bytecmd) |
2148 | { /* Begin fepcmd */ |
2149 | |
2150 | unchar *memaddr; |
2151 | unsigned int head, cmdTail, cmdStart, cmdMax; |
2152 | long count; |
2153 | int n; |
2154 | |
2155 | /* This is the routine in which commands may be passed to the card. */ |
2156 | |
2157 | if (ch->board->status == DISABLED) |
2158 | { |
2159 | return; |
2160 | } |
2161 | |
2162 | assertgwinon(ch); |
2163 | |
2164 | /* Remember head (As well as max) is just an offset not a base addr */ |
2165 | head = ch->mailbox->cin; |
2166 | |
2167 | /* cmdStart is a base address */ |
2168 | cmdStart = ch->mailbox->cstart; |
2169 | |
2170 | /* ------------------------------------------------------------------ |
2171 | We do the addition below because we do not want a max pointer |
2172 | relative to cmdStart. We want a max pointer that points at the |
2173 | physical end of the command queue. |
2174 | -------------------------------------------------------------------- */ |
2175 | |
2176 | cmdMax = (cmdStart + 4 + (ch->mailbox->cmax)); |
2177 | |
2178 | memaddr = ch->board->re_map_membase; |
2179 | |
2180 | /* |
2181 | The below command is necessary because newer kernels (2.1.x and |
2182 | up) do not have a 1:1 virtual to physical mapping. The below |
2183 | call adjust for that. |
2184 | */ |
2185 | |
2186 | memaddr = (unsigned char *)bus_to_virt((unsigned long)memaddr); |
2187 | |
2188 | if (head >= (cmdMax - cmdStart) || (head & 03)) |
2189 | { |
2190 | printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", __LINE__, |
2191 | cmd, head); |
2192 | printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", __LINE__, |
2193 | cmdMax, cmdStart); |
2194 | return; |
2195 | } |
2196 | |
2197 | if (bytecmd) |
2198 | { |
2199 | *(volatile unchar *)(memaddr + head + cmdStart + 0) = (unchar)cmd; |
2200 | |
2201 | *(volatile unchar *)(memaddr + head + cmdStart + 1) = (unchar)ch->channelnum; |
2202 | /* Below word_or_byte is bits to set */ |
2203 | *(volatile unchar *)(memaddr + head + cmdStart + 2) = (unchar)word_or_byte; |
2204 | /* Below byte2 is bits to reset */ |
2205 | *(volatile unchar *)(memaddr + head + cmdStart + 3) = (unchar)byte2; |
2206 | |
2207 | } |
2208 | else |
2209 | { |
2210 | *(volatile unchar *)(memaddr + head + cmdStart + 0) = (unchar)cmd; |
2211 | *(volatile unchar *)(memaddr + head + cmdStart + 1) = (unchar)ch->channelnum; |
2212 | *(volatile ushort*)(memaddr + head + cmdStart + 2) = (ushort)word_or_byte; |
2213 | } |
2214 | |
2215 | head = (head + 4) & (cmdMax - cmdStart - 4); |
2216 | ch->mailbox->cin = head; |
2217 | |
2218 | count = FEPTIMEOUT; |
2219 | |
2220 | for (;;) |
2221 | { /* Begin forever loop */ |
2222 | |
2223 | count--; |
2224 | if (count == 0) |
2225 | { |
2226 | printk(KERN_ERR "<Error> - Fep not responding in fepcmd()\n"); |
2227 | return; |
2228 | } |
2229 | |
2230 | head = ch->mailbox->cin; |
2231 | cmdTail = ch->mailbox->cout; |
2232 | |
2233 | n = (head - cmdTail) & (cmdMax - cmdStart - 4); |
2234 | |
2235 | /* ---------------------------------------------------------- |
2236 | Basically this will break when the FEP acknowledges the |
2237 | command by incrementing cmdTail (Making it equal to head). |
2238 | ------------------------------------------------------------- */ |
2239 | |
2240 | if (n <= ncmds * (sizeof(short) * 4)) |
2241 | break; /* Well nearly forever :-) */ |
2242 | |
2243 | } /* End forever loop */ |
2244 | |
2245 | } /* End fepcmd */ |
2246 | |
2247 | /* --------------------------------------------------------------------- |
2248 | Digi products use fields in their channels structures that are very |
2249 | similar to the c_cflag and c_iflag fields typically found in UNIX |
2250 | termios structures. The below three routines allow mappings |
2251 | between these hardware "flags" and their respective Linux flags. |
2252 | ------------------------------------------------------------------------- */ |
2253 | |
2254 | /* --------------------- Begin termios2digi_h -------------------- */ |
2255 | |
2256 | static unsigned termios2digi_h(struct channel *ch, unsigned cflag) |
2257 | { /* Begin termios2digi_h */ |
2258 | |
2259 | unsigned res = 0; |
2260 | |
2261 | if (cflag & CRTSCTS) |
2262 | { |
2263 | ch->digiext.digi_flags |= (RTSPACE | CTSPACE); |
2264 | res |= ((ch->m_cts) | (ch->m_rts)); |
2265 | } |
2266 | |
2267 | if (ch->digiext.digi_flags & RTSPACE) |
2268 | res |= ch->m_rts; |
2269 | |
2270 | if (ch->digiext.digi_flags & DTRPACE) |
2271 | res |= ch->m_dtr; |
2272 | |
2273 | if (ch->digiext.digi_flags & CTSPACE) |
2274 | res |= ch->m_cts; |
2275 | |
2276 | if (ch->digiext.digi_flags & DSRPACE) |
2277 | res |= ch->dsr; |
2278 | |
2279 | if (ch->digiext.digi_flags & DCDPACE) |
2280 | res |= ch->dcd; |
2281 | |
2282 | if (res & (ch->m_rts)) |
2283 | ch->digiext.digi_flags |= RTSPACE; |
2284 | |
2285 | if (res & (ch->m_cts)) |
2286 | ch->digiext.digi_flags |= CTSPACE; |
2287 | |
2288 | return res; |
2289 | |
2290 | } /* End termios2digi_h */ |
2291 | |
2292 | /* --------------------- Begin termios2digi_i -------------------- */ |
2293 | static unsigned termios2digi_i(struct channel *ch, unsigned iflag) |
2294 | { /* Begin termios2digi_i */ |
2295 | |
2296 | unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | |
2297 | INPCK | ISTRIP|IXON|IXANY|IXOFF); |
2298 | |
2299 | if (ch->digiext.digi_flags & DIGI_AIXON) |
2300 | res |= IAIXON; |
2301 | return res; |
2302 | |
2303 | } /* End termios2digi_i */ |
2304 | |
2305 | /* --------------------- Begin termios2digi_c -------------------- */ |
2306 | |
2307 | static unsigned termios2digi_c(struct channel *ch, unsigned cflag) |
2308 | { /* Begin termios2digi_c */ |
2309 | |
2310 | unsigned res = 0; |
2311 | |
2312 | #ifdef SPEED_HACK |
2313 | /* CL: HACK to force 115200 at 38400 and 57600 at 19200 Baud */ |
2314 | if ((cflag & CBAUD)== B38400) cflag=cflag - B38400 + B115200; |
2315 | if ((cflag & CBAUD)== B19200) cflag=cflag - B19200 + B57600; |
2316 | #endif /* SPEED_HACK */ |
2317 | |
2318 | if (cflag & CBAUDEX) |
2319 | { /* Begin detected CBAUDEX */ |
2320 | |
2321 | ch->digiext.digi_flags |= DIGI_FAST; |
2322 | |
2323 | /* ------------------------------------------------------------- |
2324 | HUPCL bit is used by FEP to indicate fast baud |
2325 | table is to be used. |
2326 | ----------------------------------------------------------------- */ |
2327 | |
2328 | res |= FEP_HUPCL; |
2329 | |
2330 | } /* End detected CBAUDEX */ |
2331 | else ch->digiext.digi_flags &= ~DIGI_FAST; |
2332 | |
2333 | /* ------------------------------------------------------------------- |
2334 | CBAUD has bit position 0x1000 set these days to indicate Linux |
2335 | baud rate remap. Digi hardware can't handle the bit assignment. |
2336 | (We use a different bit assignment for high speed.). Clear this |
2337 | bit out. |
2338 | ---------------------------------------------------------------------- */ |
2339 | res |= cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE); |
2340 | |
2341 | /* ------------------------------------------------------------- |
2342 | This gets a little confusing. The Digi cards have their own |
2343 | representation of c_cflags controling baud rate. For the most |
2344 | part this is identical to the Linux implementation. However; |
2345 | Digi supports one rate (76800) that Linux doesn't. This means |
2346 | that the c_cflag entry that would normally mean 76800 for Digi |
2347 | actually means 115200 under Linux. Without the below mapping, |
2348 | a stty 115200 would only drive the board at 76800. Since |
2349 | the rate 230400 is also found after 76800, the same problem afflicts |
2350 | us when we choose a rate of 230400. Without the below modificiation |
2351 | stty 230400 would actually give us 115200. |
2352 | |
2353 | There are two additional differences. The Linux value for CLOCAL |
2354 | (0x800; 0004000) has no meaning to the Digi hardware. Also in |
2355 | later releases of Linux; the CBAUD define has CBAUDEX (0x1000; |
2356 | 0010000) ored into it (CBAUD = 0x100f as opposed to 0xf). CBAUDEX |
2357 | should be checked for a screened out prior to termios2digi_c |
2358 | returning. Since CLOCAL isn't used by the board this can be |
2359 | ignored as long as the returned value is used only by Digi hardware. |
2360 | ----------------------------------------------------------------- */ |
2361 | |
2362 | if (cflag & CBAUDEX) |
2363 | { |
2364 | /* ------------------------------------------------------------- |
2365 | The below code is trying to guarantee that only baud rates |
2366 | 115200 and 230400 are remapped. We use exclusive or because |
2367 | the various baud rates share common bit positions and therefore |
2368 | can't be tested for easily. |
2369 | ----------------------------------------------------------------- */ |
2370 | |
2371 | |
2372 | if ((!((cflag & 0x7) ^ (B115200 & ~CBAUDEX))) || |
2373 | (!((cflag & 0x7) ^ (B230400 & ~CBAUDEX)))) |
2374 | { |
2375 | res += 1; |
2376 | } |
2377 | } |
2378 | |
2379 | return res; |
2380 | |
2381 | } /* End termios2digi_c */ |
2382 | |
2383 | /* --------------------- Begin epcaparam ----------------------- */ |
2384 | |
2385 | static void epcaparam(struct tty_struct *tty, struct channel *ch) |
2386 | { /* Begin epcaparam */ |
2387 | |
2388 | unsigned int cmdHead; |
2389 | struct termios *ts; |
2390 | volatile struct board_chan *bc; |
2391 | unsigned mval, hflow, cflag, iflag; |
2392 | |
2393 | bc = ch->brdchan; |
2394 | epcaassert(bc !=0, "bc out of range"); |
2395 | |
2396 | assertgwinon(ch); |
2397 | |
2398 | ts = tty->termios; |
2399 | |
2400 | if ((ts->c_cflag & CBAUD) == 0) |
2401 | { /* Begin CBAUD detected */ |
2402 | |
2403 | cmdHead = bc->rin; |
2404 | bc->rout = cmdHead; |
2405 | cmdHead = bc->tin; |
2406 | |
2407 | /* Changing baud in mid-stream transmission can be wonderful */ |
2408 | /* --------------------------------------------------------------- |
2409 | Flush current transmit buffer by setting cmdTail pointer (tout) |
2410 | to cmdHead pointer (tin). Hopefully the transmit buffer is empty. |
2411 | ----------------------------------------------------------------- */ |
2412 | |
2413 | fepcmd(ch, STOUT, (unsigned) cmdHead, 0, 0, 0); |
2414 | mval = 0; |
2415 | |
2416 | } /* End CBAUD detected */ |
2417 | else |
2418 | { /* Begin CBAUD not detected */ |
2419 | |
2420 | /* ------------------------------------------------------------------- |
2421 | c_cflags have changed but that change had nothing to do with BAUD. |
2422 | Propagate the change to the card. |
2423 | ---------------------------------------------------------------------- */ |
2424 | |
2425 | cflag = termios2digi_c(ch, ts->c_cflag); |
2426 | |
2427 | if (cflag != ch->fepcflag) |
2428 | { |
2429 | ch->fepcflag = cflag; |
2430 | /* Set baud rate, char size, stop bits, parity */ |
2431 | fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0); |
2432 | } |
2433 | |
2434 | |
2435 | /* ---------------------------------------------------------------- |
2436 | If the user has not forced CLOCAL and if the device is not a |
2437 | CALLOUT device (Which is always CLOCAL) we set flags such that |
2438 | the driver will wait on carrier detect. |
2439 | ------------------------------------------------------------------- */ |
2440 | |
2441 | if (ts->c_cflag & CLOCAL) |
2442 | { /* Begin it is a cud device or a ttyD device with CLOCAL on */ |
2443 | ch->asyncflags &= ~ASYNC_CHECK_CD; |
2444 | } /* End it is a cud device or a ttyD device with CLOCAL on */ |
2445 | else |
2446 | { /* Begin it is a ttyD device */ |
2447 | ch->asyncflags |= ASYNC_CHECK_CD; |
2448 | } /* End it is a ttyD device */ |
2449 | |
2450 | mval = ch->m_dtr | ch->m_rts; |
2451 | |
2452 | } /* End CBAUD not detected */ |
2453 | |
2454 | iflag = termios2digi_i(ch, ts->c_iflag); |
2455 | |
2456 | /* Check input mode flags */ |
2457 | |
2458 | if (iflag != ch->fepiflag) |
2459 | { |
2460 | ch->fepiflag = iflag; |
2461 | |
2462 | /* --------------------------------------------------------------- |
2463 | Command sets channels iflag structure on the board. Such things |
2464 | as input soft flow control, handling of parity errors, and |
2465 | break handling are all set here. |
2466 | ------------------------------------------------------------------- */ |
2467 | |
2468 | /* break handling, parity handling, input stripping, flow control chars */ |
2469 | fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); |
2470 | } |
2471 | |
2472 | /* --------------------------------------------------------------- |
2473 | Set the board mint value for this channel. This will cause hardware |
2474 | events to be generated each time the DCD signal (Described in mint) |
2475 | changes. |
2476 | ------------------------------------------------------------------- */ |
2477 | bc->mint = ch->dcd; |
2478 | |
2479 | if ((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD)) |
2480 | if (ch->digiext.digi_flags & DIGI_FORCEDCD) |
2481 | bc->mint = 0; |
2482 | |
2483 | ch->imodem = bc->mstat; |
2484 | |
2485 | hflow = termios2digi_h(ch, ts->c_cflag); |
2486 | |
2487 | if (hflow != ch->hflow) |
2488 | { |
2489 | ch->hflow = hflow; |
2490 | |
2491 | /* -------------------------------------------------------------- |
2492 | Hard flow control has been selected but the board is not |
2493 | using it. Activate hard flow control now. |
2494 | ----------------------------------------------------------------- */ |
2495 | |
2496 | fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1); |
2497 | } |
2498 | |
2499 | |
2500 | mval ^= ch->modemfake & (mval ^ ch->modem); |
2501 | |
2502 | if (ch->omodem ^ mval) |
2503 | { |
2504 | ch->omodem = mval; |
2505 | |
2506 | /* -------------------------------------------------------------- |
2507 | The below command sets the DTR and RTS mstat structure. If |
2508 | hard flow control is NOT active these changes will drive the |
2509 | output of the actual DTR and RTS lines. If hard flow control |
2510 | is active, the changes will be saved in the mstat structure and |
2511 | only asserted when hard flow control is turned off. |
2512 | ----------------------------------------------------------------- */ |
2513 | |
2514 | /* First reset DTR & RTS; then set them */ |
2515 | fepcmd(ch, SETMODEM, 0, ((ch->m_dtr)|(ch->m_rts)), 0, 1); |
2516 | fepcmd(ch, SETMODEM, mval, 0, 0, 1); |
2517 | |
2518 | } |
2519 | |
2520 | if (ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) |
2521 | { |
2522 | ch->fepstartc = ch->startc; |
2523 | ch->fepstopc = ch->stopc; |
2524 | |
2525 | /* ------------------------------------------------------------ |
2526 | The XON / XOFF characters have changed; propagate these |
2527 | changes to the card. |
2528 | --------------------------------------------------------------- */ |
2529 | |
2530 | fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); |
2531 | } |
2532 | |
2533 | if (ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) |
2534 | { |
2535 | ch->fepstartca = ch->startca; |
2536 | ch->fepstopca = ch->stopca; |
2537 | |
2538 | /* --------------------------------------------------------------- |
2539 | Similar to the above, this time the auxilarly XON / XOFF |
2540 | characters have changed; propagate these changes to the card. |
2541 | ------------------------------------------------------------------ */ |
2542 | |
2543 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); |
2544 | } |
2545 | |
2546 | } /* End epcaparam */ |
2547 | |
2548 | /* --------------------- Begin receive_data ----------------------- */ |
2549 | |
2550 | static void receive_data(struct channel *ch) |
2551 | { /* Begin receive_data */ |
2552 | |
2553 | unchar *rptr; |
2554 | struct termios *ts = NULL; |
2555 | struct tty_struct *tty; |
2556 | volatile struct board_chan *bc; |
2557 | register int dataToRead, wrapgap, bytesAvailable; |
2558 | register unsigned int tail, head; |
2559 | unsigned int wrapmask; |
2560 | int rc; |
2561 | |
2562 | |
2563 | /* --------------------------------------------------------------- |
2564 | This routine is called by doint when a receive data event |
2565 | has taken place. |
2566 | ------------------------------------------------------------------- */ |
2567 | |
2568 | globalwinon(ch); |
2569 | |
2570 | if (ch->statusflags & RXSTOPPED) |
2571 | return; |
2572 | |
2573 | tty = ch->tty; |
2574 | if (tty) |
2575 | ts = tty->termios; |
2576 | |
2577 | bc = ch->brdchan; |
2578 | |
2579 | if (!bc) |
2580 | { |
2581 | printk(KERN_ERR "<Error> - bc is NULL in receive_data!\n"); |
2582 | return; |
2583 | } |
2584 | |
2585 | wrapmask = ch->rxbufsize - 1; |
2586 | |
2587 | /* --------------------------------------------------------------------- |
2588 | Get the head and tail pointers to the receiver queue. Wrap the |
2589 | head pointer if it has reached the end of the buffer. |
2590 | ------------------------------------------------------------------------ */ |
2591 | |
2592 | head = bc->rin; |
2593 | head &= wrapmask; |
2594 | tail = bc->rout & wrapmask; |
2595 | |
2596 | bytesAvailable = (head - tail) & wrapmask; |
2597 | |
2598 | if (bytesAvailable == 0) |
2599 | return; |
2600 | |
2601 | /* ------------------------------------------------------------------ |
2602 | If CREAD bit is off or device not open, set TX tail to head |
2603 | --------------------------------------------------------------------- */ |
2604 | |
2605 | if (!tty || !ts || !(ts->c_cflag & CREAD)) |
2606 | { |
2607 | bc->rout = head; |
2608 | return; |
2609 | } |
2610 | |
2611 | if (tty->flip.count == TTY_FLIPBUF_SIZE) |
2612 | return; |
2613 | |
2614 | if (bc->orun) |
2615 | { |
2616 | bc->orun = 0; |
2617 | printk(KERN_WARNING "overrun! DigiBoard device %s\n",tty->name); |
2618 | } |
2619 | |
2620 | rxwinon(ch); |
2621 | rptr = tty->flip.char_buf_ptr; |
2622 | rc = tty->flip.count; |
2623 | |
2624 | while (bytesAvailable > 0) |
2625 | { /* Begin while there is data on the card */ |
2626 | |
2627 | wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; |
2628 | |
2629 | /* --------------------------------------------------------------- |
2630 | Even if head has wrapped around only report the amount of |
2631 | data to be equal to the size - tail. Remember memcpy can't |
2632 | automaticly wrap around the receive buffer. |
2633 | ----------------------------------------------------------------- */ |
2634 | |
2635 | dataToRead = (wrapgap < bytesAvailable) ? wrapgap : bytesAvailable; |
2636 | |
2637 | /* -------------------------------------------------------------- |
2638 | Make sure we don't overflow the buffer |
2639 | ----------------------------------------------------------------- */ |
2640 | |
2641 | if ((rc + dataToRead) > TTY_FLIPBUF_SIZE) |
2642 | dataToRead = TTY_FLIPBUF_SIZE - rc; |
2643 | |
2644 | if (dataToRead == 0) |
2645 | break; |
2646 | |
2647 | /* --------------------------------------------------------------- |
2648 | Move data read from our card into the line disciplines buffer |
2649 | for translation if necessary. |
2650 | ------------------------------------------------------------------ */ |
2651 | |
2652 | if ((memcpy(rptr, ch->rxptr + tail, dataToRead)) != rptr) |
2653 | printk(KERN_ERR "<Error> - receive_data : memcpy failed\n"); |
2654 | |
2655 | rc += dataToRead; |
2656 | rptr += dataToRead; |
2657 | tail = (tail + dataToRead) & wrapmask; |
2658 | bytesAvailable -= dataToRead; |
2659 | |
2660 | } /* End while there is data on the card */ |
2661 | |
2662 | |
2663 | tty->flip.count = rc; |
2664 | tty->flip.char_buf_ptr = rptr; |
2665 | globalwinon(ch); |
2666 | bc->rout = tail; |
2667 | |
2668 | /* Must be called with global data */ |
2669 | tty_schedule_flip(ch->tty); |
2670 | return; |
2671 | |
2672 | } /* End receive_data */ |
2673 | |
2674 | static int info_ioctl(struct tty_struct *tty, struct file * file, |
2675 | unsigned int cmd, unsigned long arg) |
2676 | { |
2677 | switch (cmd) |
2678 | { /* Begin switch cmd */ |
2679 | |
2680 | case DIGI_GETINFO: |
2681 | { /* Begin case DIGI_GETINFO */ |
2682 | |
2683 | struct digi_info di ; |
2684 | int brd; |
2685 | |
2686 | getUser(brd, (unsigned int __user *)arg); |
2687 | |
2688 | if ((brd < 0) || (brd >= num_cards) || (num_cards == 0)) |
2689 | return (-ENODEV); |
2690 | |
2691 | memset(&di, 0, sizeof(di)); |
2692 | |
2693 | di.board = brd ; |
2694 | di.status = boards[brd].status; |
2695 | di.type = boards[brd].type ; |
2696 | di.numports = boards[brd].numports ; |
2697 | di.port = boards[brd].port ; |
2698 | di.membase = boards[brd].membase ; |
2699 | |
2700 | if (copy_to_user((void __user *)arg, &di, sizeof (di))) |
2701 | return -EFAULT; |
2702 | break; |
2703 | |
2704 | } /* End case DIGI_GETINFO */ |
2705 | |
2706 | case DIGI_POLLER: |
2707 | { /* Begin case DIGI_POLLER */ |
2708 | |
2709 | int brd = arg & 0xff000000 >> 16 ; |
2710 | unsigned char state = arg & 0xff ; |
2711 | |
2712 | if ((brd < 0) || (brd >= num_cards)) |
2713 | { |
2714 | printk(KERN_ERR "<Error> - DIGI POLLER : brd not valid!\n"); |
2715 | return (-ENODEV); |
2716 | } |
2717 | |
2718 | digi_poller_inhibited = state ; |
2719 | break ; |
2720 | |
2721 | } /* End case DIGI_POLLER */ |
2722 | |
2723 | case DIGI_INIT: |
2724 | { /* Begin case DIGI_INIT */ |
2725 | |
2726 | /* ------------------------------------------------------------ |
2727 | This call is made by the apps to complete the initilization |
2728 | of the board(s). This routine is responsible for setting |
2729 | the card to its initial state and setting the drivers control |
2730 | fields to the sutianle settings for the card in question. |
2731 | ---------------------------------------------------------------- */ |
2732 | |
2733 | int crd ; |
2734 | for (crd = 0; crd < num_cards; crd++) |
2735 | post_fep_init (crd); |
2736 | |
2737 | break ; |
2738 | |
2739 | } /* End case DIGI_INIT */ |
2740 | |
2741 | |
2742 | default: |
2743 | return -ENOIOCTLCMD; |
2744 | |
2745 | } /* End switch cmd */ |
2746 | return (0) ; |
2747 | } |
2748 | /* --------------------- Begin pc_ioctl ----------------------- */ |
2749 | |
2750 | static int pc_tiocmget(struct tty_struct *tty, struct file *file) |
2751 | { |
2752 | struct channel *ch = (struct channel *) tty->driver_data; |
2753 | volatile struct board_chan *bc; |
2754 | unsigned int mstat, mflag = 0; |
2755 | unsigned long flags; |
2756 | |
2757 | if (ch) |
2758 | bc = ch->brdchan; |
2759 | else |
2760 | { |
2761 | printk(KERN_ERR "<Error> - ch is NULL in pc_tiocmget!\n"); |
2762 | return(-EINVAL); |
2763 | } |
2764 | |
2765 | save_flags(flags); |
2766 | cli(); |
2767 | globalwinon(ch); |
2768 | mstat = bc->mstat; |
2769 | memoff(ch); |
2770 | restore_flags(flags); |
2771 | |
2772 | if (mstat & ch->m_dtr) |
2773 | mflag |= TIOCM_DTR; |
2774 | |
2775 | if (mstat & ch->m_rts) |
2776 | mflag |= TIOCM_RTS; |
2777 | |
2778 | if (mstat & ch->m_cts) |
2779 | mflag |= TIOCM_CTS; |
2780 | |
2781 | if (mstat & ch->dsr) |
2782 | mflag |= TIOCM_DSR; |
2783 | |
2784 | if (mstat & ch->m_ri) |
2785 | mflag |= TIOCM_RI; |
2786 | |
2787 | if (mstat & ch->dcd) |
2788 | mflag |= TIOCM_CD; |
2789 | |
2790 | return mflag; |
2791 | } |
2792 | |
2793 | static int pc_tiocmset(struct tty_struct *tty, struct file *file, |
2794 | unsigned int set, unsigned int clear) |
2795 | { |
2796 | struct channel *ch = (struct channel *) tty->driver_data; |
2797 | unsigned long flags; |
2798 | |
2799 | if (!ch) { |
2800 | printk(KERN_ERR "<Error> - ch is NULL in pc_tiocmset!\n"); |
2801 | return(-EINVAL); |
2802 | } |
2803 | |
2804 | save_flags(flags); |
2805 | cli(); |
2806 | /* |
2807 | * I think this modemfake stuff is broken. It doesn't |
2808 | * correctly reflect the behaviour desired by the TIOCM* |
2809 | * ioctls. Therefore this is probably broken. |
2810 | */ |
2811 | if (set & TIOCM_RTS) { |
2812 | ch->modemfake |= ch->m_rts; |
2813 | ch->modem |= ch->m_rts; |
2814 | } |
2815 | if (set & TIOCM_DTR) { |
2816 | ch->modemfake |= ch->m_dtr; |
2817 | ch->modem |= ch->m_dtr; |
2818 | } |
2819 | if (clear & TIOCM_RTS) { |
2820 | ch->modemfake |= ch->m_rts; |
2821 | ch->modem &= ~ch->m_rts; |
2822 | } |
2823 | if (clear & TIOCM_DTR) { |
2824 | ch->modemfake |= ch->m_dtr; |
2825 | ch->modem &= ~ch->m_dtr; |
2826 | } |
2827 | |
2828 | globalwinon(ch); |
2829 | |
2830 | /* -------------------------------------------------------------- |
2831 | The below routine generally sets up parity, baud, flow control |
2832 | issues, etc.... It effect both control flags and input flags. |
2833 | ------------------------------------------------------------------ */ |
2834 | |
2835 | epcaparam(tty,ch); |
2836 | memoff(ch); |
2837 | restore_flags(flags); |
2838 | return 0; |
2839 | } |
2840 | |
2841 | static int pc_ioctl(struct tty_struct *tty, struct file * file, |
2842 | unsigned int cmd, unsigned long arg) |
2843 | { /* Begin pc_ioctl */ |
2844 | |
2845 | digiflow_t dflow; |
2846 | int retval; |
2847 | unsigned long flags; |
2848 | unsigned int mflag, mstat; |
2849 | unsigned char startc, stopc; |
2850 | volatile struct board_chan *bc; |
2851 | struct channel *ch = (struct channel *) tty->driver_data; |
2852 | void __user *argp = (void __user *)arg; |
2853 | |
2854 | if (ch) |
2855 | bc = ch->brdchan; |
2856 | else |
2857 | { |
2858 | printk(KERN_ERR "<Error> - ch is NULL in pc_ioctl!\n"); |
2859 | return(-EINVAL); |
2860 | } |
2861 | |
2862 | save_flags(flags); |
2863 | |
2864 | /* ------------------------------------------------------------------- |
2865 | For POSIX compliance we need to add more ioctls. See tty_ioctl.c |
2866 | in /usr/src/linux/drivers/char for a good example. In particular |
2867 | think about adding TCSETAF, TCSETAW, TCSETA, TCSETSF, TCSETSW, TCSETS. |
2868 | ---------------------------------------------------------------------- */ |
2869 | |
2870 | switch (cmd) |
2871 | { /* Begin switch cmd */ |
2872 | |
2873 | case TCGETS: |
2874 | if (copy_to_user(argp, |
2875 | tty->termios, sizeof(struct termios))) |
2876 | return -EFAULT; |
2877 | return(0); |
2878 | |
2879 | case TCGETA: |
2880 | return get_termio(tty, argp); |
2881 | |
2882 | case TCSBRK: /* SVID version: non-zero arg --> no break */ |
2883 | |
2884 | retval = tty_check_change(tty); |
2885 | if (retval) |
2886 | return retval; |
2887 | |
2888 | /* Setup an event to indicate when the transmit buffer empties */ |
2889 | |
2890 | setup_empty_event(tty,ch); |
2891 | tty_wait_until_sent(tty, 0); |
2892 | if (!arg) |
2893 | digi_send_break(ch, HZ/4); /* 1/4 second */ |
2894 | return 0; |
2895 | |
2896 | case TCSBRKP: /* support for POSIX tcsendbreak() */ |
2897 | |
2898 | retval = tty_check_change(tty); |
2899 | if (retval) |
2900 | return retval; |
2901 | |
2902 | /* Setup an event to indicate when the transmit buffer empties */ |
2903 | |
2904 | setup_empty_event(tty,ch); |
2905 | tty_wait_until_sent(tty, 0); |
2906 | digi_send_break(ch, arg ? arg*(HZ/10) : HZ/4); |
2907 | return 0; |
2908 | |
2909 | case TIOCGSOFTCAR: |
2910 | if (put_user(C_CLOCAL(tty)?1:0, (unsigned long __user *)arg)) |
2911 | return -EFAULT; |
2912 | return 0; |
2913 | |
2914 | case TIOCSSOFTCAR: |
2915 | { |
2916 | unsigned int value; |
2917 | |
2918 | if (get_user(value, (unsigned __user *)argp)) |
2919 | return -EFAULT; |
2920 | tty->termios->c_cflag = |
2921 | ((tty->termios->c_cflag & ~CLOCAL) | |
2922 | (value ? CLOCAL : 0)); |
2923 | return 0; |
2924 | } |
2925 | |
2926 | case TIOCMODG: |
2927 | mflag = pc_tiocmget(tty, file); |
2928 | if (put_user(mflag, (unsigned long __user *)argp)) |
2929 | return -EFAULT; |
2930 | break; |
2931 | |
2932 | case TIOCMODS: |
2933 | if (get_user(mstat, (unsigned __user *)argp)) |
2934 | return -EFAULT; |
2935 | return pc_tiocmset(tty, file, mstat, ~mstat); |
2936 | |
2937 | case TIOCSDTR: |
2938 | ch->omodem |= ch->m_dtr; |
2939 | cli(); |
2940 | globalwinon(ch); |
2941 | fepcmd(ch, SETMODEM, ch->m_dtr, 0, 10, 1); |
2942 | memoff(ch); |
2943 | restore_flags(flags); |
2944 | break; |
2945 | |
2946 | case TIOCCDTR: |
2947 | ch->omodem &= ~ch->m_dtr; |
2948 | cli(); |
2949 | globalwinon(ch); |
2950 | fepcmd(ch, SETMODEM, 0, ch->m_dtr, 10, 1); |
2951 | memoff(ch); |
2952 | restore_flags(flags); |
2953 | break; |
2954 | |
2955 | case DIGI_GETA: |
2956 | if (copy_to_user(argp, &ch->digiext, sizeof(digi_t))) |
2957 | return -EFAULT; |
2958 | break; |
2959 | |
2960 | case DIGI_SETAW: |
2961 | case DIGI_SETAF: |
2962 | if ((cmd) == (DIGI_SETAW)) |
2963 | { |
2964 | /* Setup an event to indicate when the transmit buffer empties */ |
2965 | |
2966 | setup_empty_event(tty,ch); |
2967 | tty_wait_until_sent(tty, 0); |
2968 | } |
2969 | else |
2970 | { |
2971 | /* ldisc lock already held in ioctl */ |
2972 | if (tty->ldisc.flush_buffer) |
2973 | tty->ldisc.flush_buffer(tty); |
2974 | } |
2975 | |
2976 | /* Fall Thru */ |
2977 | |
2978 | case DIGI_SETA: |
2979 | if (copy_from_user(&ch->digiext, argp, sizeof(digi_t))) |
2980 | return -EFAULT; |
2981 | |
2982 | if (ch->digiext.digi_flags & DIGI_ALTPIN) |
2983 | { |
2984 | ch->dcd = ch->m_dsr; |
2985 | ch->dsr = ch->m_dcd; |
2986 | } |
2987 | else |
2988 | { |
2989 | ch->dcd = ch->m_dcd; |
2990 | ch->dsr = ch->m_dsr; |
2991 | } |
2992 | |
2993 | cli(); |
2994 | globalwinon(ch); |
2995 | |
2996 | /* ----------------------------------------------------------------- |
2997 | The below routine generally sets up parity, baud, flow control |
2998 | issues, etc.... It effect both control flags and input flags. |
2999 | ------------------------------------------------------------------- */ |
3000 | |
3001 | epcaparam(tty,ch); |
3002 | memoff(ch); |
3003 | restore_flags(flags); |
3004 | break; |
3005 | |
3006 | case DIGI_GETFLOW: |
3007 | case DIGI_GETAFLOW: |
3008 | cli(); |
3009 | globalwinon(ch); |
3010 | if ((cmd) == (DIGI_GETFLOW)) |
3011 | { |
3012 | dflow.startc = bc->startc; |
3013 | dflow.stopc = bc->stopc; |
3014 | } |
3015 | else |
3016 | { |
3017 | dflow.startc = bc->startca; |
3018 | dflow.stopc = bc->stopca; |
3019 | } |
3020 | memoff(ch); |
3021 | restore_flags(flags); |
3022 | |
3023 | if (copy_to_user(argp, &dflow, sizeof(dflow))) |
3024 | return -EFAULT; |
3025 | break; |
3026 | |
3027 | case DIGI_SETAFLOW: |
3028 | case DIGI_SETFLOW: |
3029 | if ((cmd) == (DIGI_SETFLOW)) |
3030 | { |
3031 | startc = ch->startc; |
3032 | stopc = ch->stopc; |
3033 | } |
3034 | else |
3035 | { |
3036 | startc = ch->startca; |
3037 | stopc = ch->stopca; |
3038 | } |
3039 | |
3040 | if (copy_from_user(&dflow, argp, sizeof(dflow))) |
3041 | return -EFAULT; |
3042 | |
3043 | if (dflow.startc != startc || dflow.stopc != stopc) |
3044 | { /* Begin if setflow toggled */ |
3045 | cli(); |
3046 | globalwinon(ch); |
3047 | |
3048 | if ((cmd) == (DIGI_SETFLOW)) |
3049 | { |
3050 | ch->fepstartc = ch->startc = dflow.startc; |
3051 | ch->fepstopc = ch->stopc = dflow.stopc; |
3052 | fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); |
3053 | } |
3054 | else |
3055 | { |
3056 | ch->fepstartca = ch->startca = dflow.startc; |
3057 | ch->fepstopca = ch->stopca = dflow.stopc; |
3058 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); |
3059 | } |
3060 | |
3061 | if (ch->statusflags & TXSTOPPED) |
3062 | pc_start(tty); |
3063 | |
3064 | memoff(ch); |
3065 | restore_flags(flags); |
3066 | |
3067 | } /* End if setflow toggled */ |
3068 | break; |
3069 | |
3070 | default: |
3071 | return -ENOIOCTLCMD; |
3072 | |
3073 | } /* End switch cmd */ |
3074 | |
3075 | return 0; |
3076 | |
3077 | } /* End pc_ioctl */ |
3078 | |
3079 | /* --------------------- Begin pc_set_termios ----------------------- */ |
3080 | |
3081 | static void pc_set_termios(struct tty_struct *tty, struct termios *old_termios) |
3082 | { /* Begin pc_set_termios */ |
3083 | |
3084 | struct channel *ch; |
3085 | unsigned long flags; |
3086 | |
3087 | /* --------------------------------------------------------- |
3088 | verifyChannel returns the channel from the tty struct |
3089 | if it is valid. This serves as a sanity check. |
3090 | ------------------------------------------------------------- */ |
3091 | |
3092 | if ((ch = verifyChannel(tty)) != NULL) |
3093 | { /* Begin if channel valid */ |
3094 | |
3095 | save_flags(flags); |
3096 | cli(); |
3097 | globalwinon(ch); |
3098 | epcaparam(tty, ch); |
3099 | memoff(ch); |
3100 | |
3101 | if ((old_termios->c_cflag & CRTSCTS) && |
3102 | ((tty->termios->c_cflag & CRTSCTS) == 0)) |
3103 | tty->hw_stopped = 0; |
3104 | |
3105 | if (!(old_termios->c_cflag & CLOCAL) && |
3106 | (tty->termios->c_cflag & CLOCAL)) |
3107 | wake_up_interruptible(&ch->open_wait); |
3108 | |
3109 | restore_flags(flags); |
3110 | |
3111 | } /* End if channel valid */ |
3112 | |
3113 | } /* End pc_set_termios */ |
3114 | |
3115 | /* --------------------- Begin do_softint ----------------------- */ |
3116 | |
3117 | static void do_softint(void *private_) |
3118 | { /* Begin do_softint */ |
3119 | |
3120 | struct channel *ch = (struct channel *) private_; |
3121 | |
3122 | |
3123 | /* Called in response to a modem change event */ |
3124 | |
3125 | if (ch && ch->magic == EPCA_MAGIC) |
3126 | { /* Begin EPCA_MAGIC */ |
3127 | |
3128 | struct tty_struct *tty = ch->tty; |
3129 | |
3130 | if (tty && tty->driver_data) |
3131 | { |
3132 | if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) |
3133 | { /* Begin if clear_bit */ |
3134 | |
3135 | tty_hangup(tty); /* FIXME: module removal race here - AKPM */ |
3136 | wake_up_interruptible(&ch->open_wait); |
3137 | ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; |
3138 | |
3139 | } /* End if clear_bit */ |
3140 | } |
3141 | |
3142 | } /* End EPCA_MAGIC */ |
3143 | } /* End do_softint */ |
3144 | |
3145 | /* ------------------------------------------------------------ |
3146 | pc_stop and pc_start provide software flow control to the |
3147 | routine and the pc_ioctl routine. |
3148 | ---------------------------------------------------------------- */ |
3149 | |
3150 | /* --------------------- Begin pc_stop ----------------------- */ |
3151 | |
3152 | static void pc_stop(struct tty_struct *tty) |
3153 | { /* Begin pc_stop */ |
3154 | |
3155 | struct channel *ch; |
3156 | unsigned long flags; |
3157 | |
3158 | /* --------------------------------------------------------- |
3159 | verifyChannel returns the channel from the tty struct |
3160 | if it is valid. This serves as a sanity check. |
3161 | ------------------------------------------------------------- */ |
3162 | |
3163 | if ((ch = verifyChannel(tty)) != NULL) |
3164 | { /* Begin if valid channel */ |
3165 | |
3166 | save_flags(flags); |
3167 | cli(); |
3168 | |
3169 | if ((ch->statusflags & TXSTOPPED) == 0) |
3170 | { /* Begin if transmit stop requested */ |
3171 | |
3172 | globalwinon(ch); |
3173 | |
3174 | /* STOP transmitting now !! */ |
3175 | |
3176 | fepcmd(ch, PAUSETX, 0, 0, 0, 0); |
3177 | |
3178 | ch->statusflags |= TXSTOPPED; |
3179 | memoff(ch); |
3180 | |
3181 | } /* End if transmit stop requested */ |
3182 | |
3183 | restore_flags(flags); |
3184 | |
3185 | } /* End if valid channel */ |
3186 | |
3187 | } /* End pc_stop */ |
3188 | |
3189 | /* --------------------- Begin pc_start ----------------------- */ |
3190 | |
3191 | static void pc_start(struct tty_struct *tty) |
3192 | { /* Begin pc_start */ |
3193 | |
3194 | struct channel *ch; |
3195 | |
3196 | /* --------------------------------------------------------- |
3197 | verifyChannel returns the channel from the tty struct |
3198 | if it is valid. This serves as a sanity check. |
3199 | ------------------------------------------------------------- */ |
3200 | |
3201 | if ((ch = verifyChannel(tty)) != NULL) |
3202 | { /* Begin if channel valid */ |
3203 | |
3204 | unsigned long flags; |
3205 | |
3206 | save_flags(flags); |
3207 | cli(); |
3208 | |
3209 | /* Just in case output was resumed because of a change in Digi-flow */ |
3210 | if (ch->statusflags & TXSTOPPED) |
3211 | { /* Begin transmit resume requested */ |
3212 | |
3213 | volatile struct board_chan *bc; |
3214 | |
3215 | globalwinon(ch); |
3216 | bc = ch->brdchan; |
3217 | if (ch->statusflags & LOWWAIT) |
3218 | bc->ilow = 1; |
3219 | |
3220 | /* Okay, you can start transmitting again... */ |
3221 | |
3222 | fepcmd(ch, RESUMETX, 0, 0, 0, 0); |
3223 | |
3224 | ch->statusflags &= ~TXSTOPPED; |
3225 | memoff(ch); |
3226 | |
3227 | } /* End transmit resume requested */ |
3228 | |
3229 | restore_flags(flags); |
3230 | |
3231 | } /* End if channel valid */ |
3232 | |
3233 | } /* End pc_start */ |
3234 | |
3235 | /* ------------------------------------------------------------------ |
3236 | The below routines pc_throttle and pc_unthrottle are used |
3237 | to slow (And resume) the receipt of data into the kernels |
3238 | receive buffers. The exact occurrence of this depends on the |
3239 | size of the kernels receive buffer and what the 'watermarks' |
3240 | are set to for that buffer. See the n_ttys.c file for more |
3241 | details. |
3242 | ______________________________________________________________________ */ |
3243 | /* --------------------- Begin throttle ----------------------- */ |
3244 | |
3245 | static void pc_throttle(struct tty_struct * tty) |
3246 | { /* Begin pc_throttle */ |
3247 | |
3248 | struct channel *ch; |
3249 | unsigned long flags; |
3250 | |
3251 | /* --------------------------------------------------------- |
3252 | verifyChannel returns the channel from the tty struct |
3253 | if it is valid. This serves as a sanity check. |
3254 | ------------------------------------------------------------- */ |
3255 | |
3256 | if ((ch = verifyChannel(tty)) != NULL) |
3257 | { /* Begin if channel valid */ |
3258 | |
3259 | |
3260 | save_flags(flags); |
3261 | cli(); |
3262 | |
3263 | if ((ch->statusflags & RXSTOPPED) == 0) |
3264 | { |
3265 | globalwinon(ch); |
3266 | fepcmd(ch, PAUSERX, 0, 0, 0, 0); |
3267 | |
3268 | ch->statusflags |= RXSTOPPED; |
3269 | memoff(ch); |
3270 | } |
3271 | restore_flags(flags); |
3272 | |
3273 | } /* End if channel valid */ |
3274 | |
3275 | } /* End pc_throttle */ |
3276 | |
3277 | /* --------------------- Begin unthrottle ----------------------- */ |
3278 | |
3279 | static void pc_unthrottle(struct tty_struct *tty) |
3280 | { /* Begin pc_unthrottle */ |
3281 | |
3282 | struct channel *ch; |
3283 | unsigned long flags; |
3284 | volatile struct board_chan *bc; |
3285 | |
3286 | |
3287 | /* --------------------------------------------------------- |
3288 | verifyChannel returns the channel from the tty struct |
3289 | if it is valid. This serves as a sanity check. |
3290 | ------------------------------------------------------------- */ |
3291 | |
3292 | if ((ch = verifyChannel(tty)) != NULL) |
3293 | { /* Begin if channel valid */ |
3294 | |
3295 | |
3296 | /* Just in case output was resumed because of a change in Digi-flow */ |
3297 | save_flags(flags); |
3298 | cli(); |
3299 | |
3300 | if (ch->statusflags & RXSTOPPED) |
3301 | { |
3302 | |
3303 | globalwinon(ch); |
3304 | bc = ch->brdchan; |
3305 | fepcmd(ch, RESUMERX, 0, 0, 0, 0); |
3306 | |
3307 | ch->statusflags &= ~RXSTOPPED; |
3308 | memoff(ch); |
3309 | } |
3310 | restore_flags(flags); |
3311 | |
3312 | } /* End if channel valid */ |
3313 | |
3314 | } /* End pc_unthrottle */ |
3315 | |
3316 | /* --------------------- Begin digi_send_break ----------------------- */ |
3317 | |
3318 | void digi_send_break(struct channel *ch, int msec) |
3319 | { /* Begin digi_send_break */ |
3320 | |
3321 | unsigned long flags; |
3322 | |
3323 | save_flags(flags); |
3324 | cli(); |
3325 | globalwinon(ch); |
3326 | |
3327 | /* -------------------------------------------------------------------- |
3328 | Maybe I should send an infinite break here, schedule() for |
3329 | msec amount of time, and then stop the break. This way, |
3330 | the user can't screw up the FEP by causing digi_send_break() |
3331 | to be called (i.e. via an ioctl()) more than once in msec amount |
3332 | of time. Try this for now... |
3333 | ------------------------------------------------------------------------ */ |
3334 | |
3335 | fepcmd(ch, SENDBREAK, msec, 0, 10, 0); |
3336 | memoff(ch); |
3337 | |
3338 | restore_flags(flags); |
3339 | |
3340 | } /* End digi_send_break */ |
3341 | |
3342 | /* --------------------- Begin setup_empty_event ----------------------- */ |
3343 | |
3344 | static void setup_empty_event(struct tty_struct *tty, struct channel *ch) |
3345 | { /* Begin setup_empty_event */ |
3346 | |
3347 | volatile struct board_chan *bc = ch->brdchan; |
3348 | unsigned long int flags; |
3349 | |
3350 | save_flags(flags); |
3351 | cli(); |
3352 | globalwinon(ch); |
3353 | ch->statusflags |= EMPTYWAIT; |
3354 | |
3355 | /* ------------------------------------------------------------------ |
3356 | When set the iempty flag request a event to be generated when the |
3357 | transmit buffer is empty (If there is no BREAK in progress). |
3358 | --------------------------------------------------------------------- */ |
3359 | |
3360 | bc->iempty = 1; |
3361 | memoff(ch); |
3362 | restore_flags(flags); |
3363 | |
3364 | } /* End setup_empty_event */ |
3365 | |
3366 | /* --------------------- Begin get_termio ----------------------- */ |
3367 | |
3368 | static int get_termio(struct tty_struct * tty, struct termio __user * termio) |
3369 | { /* Begin get_termio */ |
3370 | return kernel_termios_to_user_termio(termio, tty->termios); |
3371 | } /* End get_termio */ |
3372 | /* ---------------------- Begin epca_setup -------------------------- */ |
3373 | void epca_setup(char *str, int *ints) |
3374 | { /* Begin epca_setup */ |
3375 | |
3376 | struct board_info board; |
3377 | int index, loop, last; |
3378 | char *temp, *t2; |
3379 | unsigned len; |
3380 | |
3381 | /* ---------------------------------------------------------------------- |
3382 | If this routine looks a little strange it is because it is only called |
3383 | if a LILO append command is given to boot the kernel with parameters. |
3384 | In this way, we can provide the user a method of changing his board |
3385 | configuration without rebuilding the kernel. |
3386 | ----------------------------------------------------------------------- */ |
3387 | if (!liloconfig) |
3388 | liloconfig = 1; |
3389 | |
3390 | memset(&board, 0, sizeof(board)); |
3391 | |
3392 | /* Assume the data is int first, later we can change it */ |
3393 | /* I think that array position 0 of ints holds the number of args */ |
3394 | for (last = 0, index = 1; index <= ints[0]; index++) |
3395 | switch(index) |
3396 | { /* Begin parse switch */ |
3397 | |
3398 | case 1: |
3399 | board.status = ints[index]; |
3400 | |
3401 | /* --------------------------------------------------------- |
3402 | We check for 2 (As opposed to 1; because 2 is a flag |
3403 | instructing the driver to ignore epcaconfig.) For this |
3404 | reason we check for 2. |
3405 | ------------------------------------------------------------ */ |
3406 | if (board.status == 2) |
3407 | { /* Begin ignore epcaconfig as well as lilo cmd line */ |
3408 | nbdevs = 0; |
3409 | num_cards = 0; |
3410 | return; |
3411 | } /* End ignore epcaconfig as well as lilo cmd line */ |
3412 | |
3413 | if (board.status > 2) |
3414 | { |
3415 | printk(KERN_ERR "<Error> - epca_setup: Invalid board status 0x%x\n", board.status); |
3416 | invalid_lilo_config = 1; |
3417 | setup_error_code |= INVALID_BOARD_STATUS; |
3418 | return; |
3419 | } |
3420 | last = index; |
3421 | break; |
3422 | |
3423 | case 2: |
3424 | board.type = ints[index]; |
3425 | if (board.type >= PCIXEM) |
3426 | { |
3427 | printk(KERN_ERR "<Error> - epca_setup: Invalid board type 0x%x\n", board.type); |
3428 | invalid_lilo_config = 1; |
3429 | setup_error_code |= INVALID_BOARD_TYPE; |
3430 | return; |
3431 | } |
3432 | last = index; |
3433 | break; |
3434 | |
3435 | case 3: |
3436 | board.altpin = ints[index]; |
3437 | if (board.altpin > 1) |
3438 | { |
3439 | printk(KERN_ERR "<Error> - epca_setup: Invalid board altpin 0x%x\n", board.altpin); |
3440 | invalid_lilo_config = 1; |
3441 | setup_error_code |= INVALID_ALTPIN; |
3442 | return; |
3443 | } |
3444 | last = index; |
3445 | break; |
3446 | |
3447 | case 4: |
3448 | board.numports = ints[index]; |
3449 | if ((board.numports < 2) || (board.numports > 256)) |
3450 | { |
3451 | printk(KERN_ERR "<Error> - epca_setup: Invalid board numports 0x%x\n", board.numports); |
3452 | invalid_lilo_config = 1; |
3453 | setup_error_code |= INVALID_NUM_PORTS; |
3454 | return; |
3455 | } |
3456 | nbdevs += board.numports; |
3457 | last = index; |
3458 | break; |
3459 | |
3460 | case 5: |
3461 | board.port = (unsigned char *)ints[index]; |
3462 | if (ints[index] <= 0) |
3463 | { |
3464 | printk(KERN_ERR "<Error> - epca_setup: Invalid io port 0x%x\n", (unsigned int)board.port); |
3465 | invalid_lilo_config = 1; |
3466 | setup_error_code |= INVALID_PORT_BASE; |
3467 | return; |
3468 | } |
3469 | last = index; |
3470 | break; |
3471 | |
3472 | case 6: |
3473 | board.membase = (unsigned char *)ints[index]; |
3474 | if (ints[index] <= 0) |
3475 | { |
3476 | printk(KERN_ERR "<Error> - epca_setup: Invalid memory base 0x%x\n",(unsigned int)board.membase); |
3477 | invalid_lilo_config = 1; |
3478 | setup_error_code |= INVALID_MEM_BASE; |
3479 | return; |
3480 | } |
3481 | last = index; |
3482 | break; |
3483 | |
3484 | default: |
3485 | printk(KERN_ERR "<Error> - epca_setup: Too many integer parms\n"); |
3486 | return; |
3487 | |
3488 | } /* End parse switch */ |
3489 | |
3490 | while (str && *str) |
3491 | { /* Begin while there is a string arg */ |
3492 | |
3493 | /* find the next comma or terminator */ |
3494 | temp = str; |
3495 | |
3496 | /* While string is not null, and a comma hasn't been found */ |
3497 | while (*temp && (*temp != ',')) |
3498 | temp++; |
3499 | |
3500 | if (!*temp) |
3501 | temp = NULL; |
3502 | else |
3503 | *temp++ = 0; |
3504 | |
3505 | /* Set index to the number of args + 1 */ |
3506 | index = last + 1; |
3507 | |
3508 | switch(index) |
3509 | { |
3510 | case 1: |
3511 | len = strlen(str); |
3512 | if (strncmp("Disable", str, len) == 0) |
3513 | board.status = 0; |
3514 | else |
3515 | if (strncmp("Enable", str, len) == 0) |
3516 | board.status = 1; |
3517 | else |
3518 | { |
3519 | printk(KERN_ERR "<Error> - epca_setup: Invalid status %s\n", str); |
3520 | invalid_lilo_config = 1; |
3521 | setup_error_code |= INVALID_BOARD_STATUS; |
3522 | return; |
3523 | } |
3524 | last = index; |
3525 | break; |
3526 | |
3527 | case 2: |
3528 | |
3529 | for(loop = 0; loop < EPCA_NUM_TYPES; loop++) |
3530 | if (strcmp(board_desc[loop], str) == 0) |
3531 | break; |
3532 | |
3533 | |
3534 | /* --------------------------------------------------------------- |
3535 | If the index incremented above refers to a legitamate board |
3536 | type set it here. |
3537 | ------------------------------------------------------------------*/ |
3538 | |
3539 | if (index < EPCA_NUM_TYPES) |
3540 | board.type = loop; |
3541 | else |
3542 | { |
3543 | printk(KERN_ERR "<Error> - epca_setup: Invalid board type: %s\n", str); |
3544 | invalid_lilo_config = 1; |
3545 | setup_error_code |= INVALID_BOARD_TYPE; |
3546 | return; |
3547 | } |
3548 | last = index; |
3549 | break; |
3550 | |
3551 | case 3: |
3552 | len = strlen(str); |
3553 | if (strncmp("Disable", str, len) == 0) |
3554 | board.altpin = 0; |
3555 | else |
3556 | if (strncmp("Enable", str, len) == 0) |
3557 | board.altpin = 1; |
3558 | else |
3559 | { |
3560 | printk(KERN_ERR "<Error> - epca_setup: Invalid altpin %s\n", str); |
3561 | invalid_lilo_config = 1; |
3562 | setup_error_code |= INVALID_ALTPIN; |
3563 | return; |
3564 | } |
3565 | last = index; |
3566 | break; |
3567 | |
3568 | case 4: |
3569 | t2 = str; |
3570 | while (isdigit(*t2)) |
3571 | t2++; |
3572 | |
3573 | if (*t2) |
3574 | { |
3575 | printk(KERN_ERR "<Error> - epca_setup: Invalid port count %s\n", str); |
3576 | invalid_lilo_config = 1; |
3577 | setup_error_code |= INVALID_NUM_PORTS; |
3578 | return; |
3579 | } |
3580 | |
3581 | /* ------------------------------------------------------------ |
3582 | There is not a man page for simple_strtoul but the code can be |
3583 | found in vsprintf.c. The first argument is the string to |
3584 | translate (To an unsigned long obviously), the second argument |
3585 | can be the address of any character variable or a NULL. If a |
3586 | variable is given, the end pointer of the string will be stored |
3587 | in that variable; if a NULL is given the end pointer will |
3588 | not be returned. The last argument is the base to use. If |
3589 | a 0 is indicated, the routine will attempt to determine the |
3590 | proper base by looking at the values prefix (A '0' for octal, |
3591 | a 'x' for hex, etc ... If a value is given it will use that |
3592 | value as the base. |
3593 | ---------------------------------------------------------------- */ |
3594 | board.numports = simple_strtoul(str, NULL, 0); |
3595 | nbdevs += board.numports; |
3596 | last = index; |
3597 | break; |
3598 | |
3599 | case 5: |
3600 | t2 = str; |
3601 | while (isxdigit(*t2)) |
3602 | t2++; |
3603 | |
3604 | if (*t2) |
3605 | { |
3606 | printk(KERN_ERR "<Error> - epca_setup: Invalid i/o address %s\n", str); |
3607 | invalid_lilo_config = 1; |
3608 | setup_error_code |= INVALID_PORT_BASE; |
3609 | return; |
3610 | } |
3611 | |
3612 | board.port = (unsigned char *)simple_strtoul(str, NULL, 16); |
3613 | last = index; |
3614 | break; |
3615 | |
3616 | case 6: |
3617 | t2 = str; |
3618 | while (isxdigit(*t2)) |
3619 | t2++; |
3620 | |
3621 | if (*t2) |
3622 | { |
3623 | printk(KERN_ERR "<Error> - epca_setup: Invalid memory base %s\n",str); |
3624 | invalid_lilo_config = 1; |
3625 | setup_error_code |= INVALID_MEM_BASE; |
3626 | return; |
3627 | } |
3628 | |
3629 | board.membase = (unsigned char *)simple_strtoul(str, NULL, 16); |
3630 | last = index; |
3631 | break; |
3632 | |
3633 | default: |
3634 | printk(KERN_ERR "PC/Xx: Too many string parms\n"); |
3635 | return; |
3636 | } |
3637 | str = temp; |
3638 | |
3639 | } /* End while there is a string arg */ |
3640 | |
3641 | |
3642 | if (last < 6) |
3643 | { |
3644 | printk(KERN_ERR "PC/Xx: Insufficient parms specified\n"); |
3645 | return; |
3646 | } |
3647 | |
3648 | /* I should REALLY validate the stuff here */ |
3649 | |
3650 | /* Copies our local copy of board into boards */ |
3651 | memcpy((void *)&boards[num_cards],(void *)&board, sizeof(board)); |
3652 | |
3653 | |
3654 | /* Does this get called once per lilo arg are what ? */ |
3655 | |
3656 | printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n", |
3657 | num_cards, board_desc[board.type], |
3658 | board.numports, (int)board.port, (unsigned int) board.membase); |
3659 | |
3660 | num_cards++; |
3661 | |
3662 | } /* End epca_setup */ |
3663 | |
3664 | |
3665 | |
3666 | #ifdef ENABLE_PCI |
3667 | /* ------------------------ Begin init_PCI --------------------------- */ |
3668 | |
3669 | enum epic_board_types { |
3670 | brd_xr = 0, |
3671 | brd_xem, |
3672 | brd_cx, |
3673 | brd_xrj, |
3674 | }; |
3675 | |
3676 | |
3677 | /* indexed directly by epic_board_types enum */ |
3678 | static struct { |
3679 | unsigned char board_type; |
3680 | unsigned bar_idx; /* PCI base address region */ |
3681 | } epca_info_tbl[] = { |
3682 | { PCIXR, 0, }, |
3683 | { PCIXEM, 0, }, |
3684 | { PCICX, 0, }, |
3685 | { PCIXRJ, 2, }, |
3686 | }; |
3687 | |
3688 | |
3689 | static int __devinit epca_init_one (struct pci_dev *pdev, |
3690 | const struct pci_device_id *ent) |
3691 | { |
3692 | static int board_num = -1; |
3693 | int board_idx, info_idx = ent->driver_data; |
3694 | unsigned long addr; |
3695 | |
3696 | if (pci_enable_device(pdev)) |
3697 | return -EIO; |
3698 | |
3699 | board_num++; |
3700 | board_idx = board_num + num_cards; |
3701 | if (board_idx >= MAXBOARDS) |
3702 | goto err_out; |
3703 | |
3704 | addr = pci_resource_start (pdev, epca_info_tbl[info_idx].bar_idx); |
3705 | if (!addr) { |
3706 | printk (KERN_ERR PFX "PCI region #%d not available (size 0)\n", |
3707 | epca_info_tbl[info_idx].bar_idx); |
3708 | goto err_out; |
3709 | } |
3710 | |
3711 | boards[board_idx].status = ENABLED; |
3712 | boards[board_idx].type = epca_info_tbl[info_idx].board_type; |
3713 | boards[board_idx].numports = 0x0; |
3714 | boards[board_idx].port = |
3715 | (unsigned char *)((char *) addr + PCI_IO_OFFSET); |
3716 | boards[board_idx].membase = |
3717 | (unsigned char *)((char *) addr); |
3718 | |
3719 | if (!request_mem_region (addr + PCI_IO_OFFSET, 0x200000, "epca")) { |
3720 | printk (KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", |
3721 | 0x200000, addr + PCI_IO_OFFSET); |
3722 | goto err_out; |
3723 | } |
3724 | |
3725 | boards[board_idx].re_map_port = ioremap(addr + PCI_IO_OFFSET, 0x200000); |
3726 | if (!boards[board_idx].re_map_port) { |
3727 | printk (KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
3728 | 0x200000, addr + PCI_IO_OFFSET); |
3729 | goto err_out_free_pciio; |
3730 | } |
3731 | |
3732 | if (!request_mem_region (addr, 0x200000, "epca")) { |
3733 | printk (KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", |
3734 | 0x200000, addr); |
3735 | goto err_out_free_iounmap; |
3736 | } |
3737 | |
3738 | boards[board_idx].re_map_membase = ioremap(addr, 0x200000); |
3739 | if (!boards[board_idx].re_map_membase) { |
3740 | printk (KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
3741 | 0x200000, addr + PCI_IO_OFFSET); |
3742 | goto err_out_free_memregion; |
3743 | } |
3744 | |
3745 | /* -------------------------------------------------------------- |
3746 | I don't know what the below does, but the hardware guys say |
3747 | its required on everything except PLX (In this case XRJ). |
3748 | ---------------------------------------------------------------- */ |
3749 | if (info_idx != brd_xrj) { |
3750 | pci_write_config_byte(pdev, 0x40, 0); |
3751 | pci_write_config_byte(pdev, 0x46, 0); |
3752 | } |
3753 | |
3754 | return 0; |
3755 | |
3756 | err_out_free_memregion: |
3757 | release_mem_region (addr, 0x200000); |
3758 | err_out_free_iounmap: |
3759 | iounmap (boards[board_idx].re_map_port); |
3760 | err_out_free_pciio: |
3761 | release_mem_region (addr + PCI_IO_OFFSET, 0x200000); |
3762 | err_out: |
3763 | return -ENODEV; |
3764 | } |
3765 | |
3766 | |
3767 | static struct pci_device_id epca_pci_tbl[] = { |
3768 | { PCI_VENDOR_DIGI, PCI_DEVICE_XR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xr }, |
3769 | { PCI_VENDOR_DIGI, PCI_DEVICE_XEM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xem }, |
3770 | { PCI_VENDOR_DIGI, PCI_DEVICE_CX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_cx }, |
3771 | { PCI_VENDOR_DIGI, PCI_DEVICE_XRJ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xrj }, |
3772 | { 0, } |
3773 | }; |
3774 | |
3775 | MODULE_DEVICE_TABLE(pci, epca_pci_tbl); |
3776 | |
3777 | int __init init_PCI (void) |
3778 | { /* Begin init_PCI */ |
3779 | memset (&epca_driver, 0, sizeof (epca_driver)); |
3780 | epca_driver.name = "epca"; |
3781 | epca_driver.id_table = epca_pci_tbl; |
3782 | epca_driver.probe = epca_init_one; |
3783 | |
3784 | return pci_register_driver(&epca_driver); |
3785 | } /* End init_PCI */ |
3786 | |
3787 | #endif /* ENABLE_PCI */ |
3788 | |
3789 | MODULE_LICENSE("GPL"); |