Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 | 2 | Copyright (C) 1996 Digi International. |
ae0b78d0 | 3 | |
1da177e4 LT |
4 | For technical support please email digiLinux@dgii.com or |
5 | call Digi tech support at (612) 912-3456 | |
6 | ||
f2cf8e25 AC |
7 | ** This driver is no longer supported by Digi ** |
8 | ||
ae0b78d0 AD |
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. | |
1da177e4 | 17 | |
ae0b78d0 AD |
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 | /* See README.epca for change history --DAT*/ | |
1da177e4 | 28 | |
1da177e4 LT |
29 | #include <linux/module.h> |
30 | #include <linux/kernel.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/ctype.h> | |
36 | #include <linux/tty.h> | |
37 | #include <linux/tty_flip.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/ioport.h> | |
40 | #include <linux/interrupt.h> | |
191260a0 AC |
41 | #include <linux/uaccess.h> |
42 | #include <linux/io.h> | |
f2cf8e25 | 43 | #include <linux/spinlock.h> |
1da177e4 LT |
44 | #include <linux/pci.h> |
45 | #include "digiPCI.h" | |
f2cf8e25 | 46 | |
1da177e4 LT |
47 | |
48 | #include "digi1.h" | |
49 | #include "digiFep1.h" | |
50 | #include "epca.h" | |
51 | #include "epcaconfig.h" | |
52 | ||
f2cf8e25 | 53 | #define VERSION "1.3.0.1-LK2.6" |
1da177e4 LT |
54 | |
55 | /* This major needs to be submitted to Linux to join the majors list */ | |
ae0b78d0 | 56 | #define DIGIINFOMAJOR 35 /* For Digi specific ioctl */ |
1da177e4 LT |
57 | |
58 | ||
59 | #define MAXCARDS 7 | |
60 | #define epcaassert(x, msg) if (!(x)) epca_error(__LINE__, msg) | |
61 | ||
62 | #define PFX "epca: " | |
63 | ||
1da177e4 LT |
64 | static int nbdevs, num_cards, liloconfig; |
65 | static int digi_poller_inhibited = 1 ; | |
66 | ||
67 | static int setup_error_code; | |
68 | static int invalid_lilo_config; | |
69 | ||
ae0b78d0 AD |
70 | /* |
71 | * The ISA boards do window flipping into the same spaces so its only sane with | |
d1c815e5 AC |
72 | * a single lock. It's still pretty efficient. This lock guards the hardware |
73 | * and the tty_port lock guards the kernel side stuff like use counts. Take | |
74 | * this lock inside the port lock if you must take both. | |
ae0b78d0 | 75 | */ |
34af946a | 76 | static DEFINE_SPINLOCK(epca_lock); |
f2cf8e25 | 77 | |
191260a0 AC |
78 | /* MAXBOARDS is typically 12, but ISA and EISA cards are restricted |
79 | to 7 below. */ | |
1da177e4 LT |
80 | static struct board_info boards[MAXBOARDS]; |
81 | ||
1da177e4 LT |
82 | static struct tty_driver *pc_driver; |
83 | static struct tty_driver *pc_info; | |
84 | ||
85 | /* ------------------ Begin Digi specific structures -------------------- */ | |
86 | ||
ae0b78d0 AD |
87 | /* |
88 | * digi_channels represents an array of structures that keep track of each | |
89 | * channel of the Digi product. Information such as transmit and receive | |
90 | * pointers, termio data, and signal definitions (DTR, CTS, etc ...) are stored | |
91 | * here. This structure is NOT used to overlay the cards physical channel | |
92 | * structure. | |
93 | */ | |
1da177e4 LT |
94 | static struct channel digi_channels[MAX_ALLOC]; |
95 | ||
ae0b78d0 AD |
96 | /* |
97 | * card_ptr is an array used to hold the address of the first channel structure | |
98 | * of each card. This array will hold the addresses of various channels located | |
99 | * in digi_channels. | |
100 | */ | |
1da177e4 LT |
101 | static struct channel *card_ptr[MAXCARDS]; |
102 | ||
103 | static struct timer_list epca_timer; | |
104 | ||
ae0b78d0 AD |
105 | /* |
106 | * Begin generic memory functions. These functions will be alias (point at) | |
107 | * more specific functions dependent on the board being configured. | |
108 | */ | |
f2cf8e25 AC |
109 | static void memwinon(struct board_info *b, unsigned int win); |
110 | static void memwinoff(struct board_info *b, unsigned int win); | |
111 | static void globalwinon(struct channel *ch); | |
112 | static void rxwinon(struct channel *ch); | |
113 | static void txwinon(struct channel *ch); | |
114 | static void memoff(struct channel *ch); | |
115 | static void assertgwinon(struct channel *ch); | |
116 | static void assertmemoff(struct channel *ch); | |
1da177e4 LT |
117 | |
118 | /* ---- Begin more 'specific' memory functions for cx_like products --- */ | |
119 | ||
f2cf8e25 AC |
120 | static void pcxem_memwinon(struct board_info *b, unsigned int win); |
121 | static void pcxem_memwinoff(struct board_info *b, unsigned int win); | |
122 | static void pcxem_globalwinon(struct channel *ch); | |
123 | static void pcxem_rxwinon(struct channel *ch); | |
124 | static void pcxem_txwinon(struct channel *ch); | |
125 | static void pcxem_memoff(struct channel *ch); | |
1da177e4 LT |
126 | |
127 | /* ------ Begin more 'specific' memory functions for the pcxe ------- */ | |
128 | ||
f2cf8e25 AC |
129 | static void pcxe_memwinon(struct board_info *b, unsigned int win); |
130 | static void pcxe_memwinoff(struct board_info *b, unsigned int win); | |
131 | static void pcxe_globalwinon(struct channel *ch); | |
132 | static void pcxe_rxwinon(struct channel *ch); | |
133 | static void pcxe_txwinon(struct channel *ch); | |
134 | static void pcxe_memoff(struct channel *ch); | |
1da177e4 LT |
135 | |
136 | /* ---- Begin more 'specific' memory functions for the pc64xe and pcxi ---- */ | |
137 | /* Note : pc64xe and pcxi share the same windowing routines */ | |
138 | ||
f2cf8e25 AC |
139 | static void pcxi_memwinon(struct board_info *b, unsigned int win); |
140 | static void pcxi_memwinoff(struct board_info *b, unsigned int win); | |
141 | static void pcxi_globalwinon(struct channel *ch); | |
142 | static void pcxi_rxwinon(struct channel *ch); | |
143 | static void pcxi_txwinon(struct channel *ch); | |
144 | static void pcxi_memoff(struct channel *ch); | |
1da177e4 LT |
145 | |
146 | /* - Begin 'specific' do nothing memory functions needed for some cards - */ | |
147 | ||
f2cf8e25 AC |
148 | static void dummy_memwinon(struct board_info *b, unsigned int win); |
149 | static void dummy_memwinoff(struct board_info *b, unsigned int win); | |
150 | static void dummy_globalwinon(struct channel *ch); | |
151 | static void dummy_rxwinon(struct channel *ch); | |
152 | static void dummy_txwinon(struct channel *ch); | |
153 | static void dummy_memoff(struct channel *ch); | |
154 | static void dummy_assertgwinon(struct channel *ch); | |
155 | static void dummy_assertmemoff(struct channel *ch); | |
1da177e4 | 156 | |
f2cf8e25 AC |
157 | static struct channel *verifyChannel(struct tty_struct *); |
158 | static void pc_sched_event(struct channel *, int); | |
1da177e4 LT |
159 | static void epca_error(int, char *); |
160 | static void pc_close(struct tty_struct *, struct file *); | |
d1c815e5 | 161 | static void shutdown(struct channel *, struct tty_struct *tty); |
1da177e4 | 162 | static void pc_hangup(struct tty_struct *); |
1da177e4 LT |
163 | static int pc_write_room(struct tty_struct *); |
164 | static int pc_chars_in_buffer(struct tty_struct *); | |
165 | static void pc_flush_buffer(struct tty_struct *); | |
166 | static void pc_flush_chars(struct tty_struct *); | |
167 | static int block_til_ready(struct tty_struct *, struct file *, | |
191260a0 | 168 | struct channel *); |
1da177e4 LT |
169 | static int pc_open(struct tty_struct *, struct file *); |
170 | static void post_fep_init(unsigned int crd); | |
171 | static void epcapoll(unsigned long); | |
172 | static void doevent(int); | |
173 | static void fepcmd(struct channel *, int, int, int, int, int); | |
174 | static unsigned termios2digi_h(struct channel *ch, unsigned); | |
175 | static unsigned termios2digi_i(struct channel *ch, unsigned); | |
176 | static unsigned termios2digi_c(struct channel *ch, unsigned); | |
177 | static void epcaparam(struct tty_struct *, struct channel *); | |
3969ffba | 178 | static void receive_data(struct channel *, struct tty_struct *tty); |
1da177e4 | 179 | static int pc_ioctl(struct tty_struct *, struct file *, |
191260a0 | 180 | unsigned int, unsigned long); |
1da177e4 | 181 | static int info_ioctl(struct tty_struct *, struct file *, |
191260a0 | 182 | unsigned int, unsigned long); |
606d099c | 183 | static void pc_set_termios(struct tty_struct *, struct ktermios *); |
c4028958 | 184 | static void do_softint(struct work_struct *work); |
1da177e4 LT |
185 | static void pc_stop(struct tty_struct *); |
186 | static void pc_start(struct tty_struct *); | |
191260a0 | 187 | static void pc_throttle(struct tty_struct *tty); |
1da177e4 | 188 | static void pc_unthrottle(struct tty_struct *tty); |
dcbf1280 | 189 | static int pc_send_break(struct tty_struct *tty, int msec); |
1da177e4 | 190 | static void setup_empty_event(struct tty_struct *tty, struct channel *ch); |
1da177e4 | 191 | |
1da177e4 | 192 | static int pc_write(struct tty_struct *, const unsigned char *, int); |
f2cf8e25 | 193 | static int pc_init(void); |
1da177e4 | 194 | static int init_PCI(void); |
1da177e4 | 195 | |
ae0b78d0 AD |
196 | /* |
197 | * Table of functions for each board to handle memory. Mantaining parallelism | |
198 | * is a *very* good idea here. The idea is for the runtime code to blindly call | |
199 | * these functions, not knowing/caring about the underlying hardware. This | |
200 | * stuff should contain no conditionals; if more functionality is needed a | |
201 | * different entry should be established. These calls are the interface calls | |
202 | * and are the only functions that should be accessed. Anyone caught making | |
203 | * direct calls deserves what they get. | |
204 | */ | |
f2cf8e25 | 205 | static void memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 206 | { |
ae0b78d0 | 207 | b->memwinon(b, win); |
1da177e4 LT |
208 | } |
209 | ||
f2cf8e25 | 210 | static void memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 211 | { |
ae0b78d0 | 212 | b->memwinoff(b, win); |
1da177e4 LT |
213 | } |
214 | ||
f2cf8e25 | 215 | static void globalwinon(struct channel *ch) |
1da177e4 | 216 | { |
ae0b78d0 | 217 | ch->board->globalwinon(ch); |
1da177e4 LT |
218 | } |
219 | ||
f2cf8e25 | 220 | static void rxwinon(struct channel *ch) |
1da177e4 | 221 | { |
ae0b78d0 | 222 | ch->board->rxwinon(ch); |
1da177e4 LT |
223 | } |
224 | ||
f2cf8e25 | 225 | static void txwinon(struct channel *ch) |
1da177e4 | 226 | { |
ae0b78d0 | 227 | ch->board->txwinon(ch); |
1da177e4 LT |
228 | } |
229 | ||
f2cf8e25 | 230 | static void memoff(struct channel *ch) |
1da177e4 | 231 | { |
ae0b78d0 | 232 | ch->board->memoff(ch); |
1da177e4 | 233 | } |
f2cf8e25 | 234 | static void assertgwinon(struct channel *ch) |
1da177e4 | 235 | { |
ae0b78d0 | 236 | ch->board->assertgwinon(ch); |
1da177e4 LT |
237 | } |
238 | ||
f2cf8e25 | 239 | static void assertmemoff(struct channel *ch) |
1da177e4 | 240 | { |
ae0b78d0 | 241 | ch->board->assertmemoff(ch); |
1da177e4 LT |
242 | } |
243 | ||
ae0b78d0 | 244 | /* PCXEM windowing is the same as that used in the PCXR and CX series cards. */ |
f2cf8e25 | 245 | static void pcxem_memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 246 | { |
191260a0 | 247 | outb_p(FEPWIN | win, b->port + 1); |
1da177e4 LT |
248 | } |
249 | ||
f2cf8e25 | 250 | static void pcxem_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 251 | { |
f2cf8e25 | 252 | outb_p(0, b->port + 1); |
1da177e4 LT |
253 | } |
254 | ||
f2cf8e25 | 255 | static void pcxem_globalwinon(struct channel *ch) |
1da177e4 | 256 | { |
191260a0 | 257 | outb_p(FEPWIN, (int)ch->board->port + 1); |
1da177e4 LT |
258 | } |
259 | ||
f2cf8e25 | 260 | static void pcxem_rxwinon(struct channel *ch) |
1da177e4 LT |
261 | { |
262 | outb_p(ch->rxwin, (int)ch->board->port + 1); | |
263 | } | |
264 | ||
f2cf8e25 | 265 | static void pcxem_txwinon(struct channel *ch) |
1da177e4 LT |
266 | { |
267 | outb_p(ch->txwin, (int)ch->board->port + 1); | |
268 | } | |
269 | ||
f2cf8e25 | 270 | static void pcxem_memoff(struct channel *ch) |
1da177e4 LT |
271 | { |
272 | outb_p(0, (int)ch->board->port + 1); | |
273 | } | |
274 | ||
275 | /* ----------------- Begin pcxe memory window stuff ------------------ */ | |
f2cf8e25 | 276 | static void pcxe_memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 277 | { |
ae0b78d0 | 278 | outb_p(FEPWIN | win, b->port + 1); |
1da177e4 LT |
279 | } |
280 | ||
f2cf8e25 | 281 | static void pcxe_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 282 | { |
ae0b78d0 | 283 | outb_p(inb(b->port) & ~FEPMEM, b->port + 1); |
f2cf8e25 | 284 | outb_p(0, b->port + 1); |
1da177e4 LT |
285 | } |
286 | ||
f2cf8e25 | 287 | static void pcxe_globalwinon(struct channel *ch) |
1da177e4 | 288 | { |
ae0b78d0 | 289 | outb_p(FEPWIN, (int)ch->board->port + 1); |
1da177e4 LT |
290 | } |
291 | ||
f2cf8e25 | 292 | static void pcxe_rxwinon(struct channel *ch) |
1da177e4 | 293 | { |
ae0b78d0 | 294 | outb_p(ch->rxwin, (int)ch->board->port + 1); |
1da177e4 LT |
295 | } |
296 | ||
f2cf8e25 | 297 | static void pcxe_txwinon(struct channel *ch) |
1da177e4 | 298 | { |
ae0b78d0 | 299 | outb_p(ch->txwin, (int)ch->board->port + 1); |
1da177e4 LT |
300 | } |
301 | ||
f2cf8e25 | 302 | static void pcxe_memoff(struct channel *ch) |
1da177e4 LT |
303 | { |
304 | outb_p(0, (int)ch->board->port); | |
305 | outb_p(0, (int)ch->board->port + 1); | |
306 | } | |
307 | ||
308 | /* ------------- Begin pc64xe and pcxi memory window stuff -------------- */ | |
f2cf8e25 | 309 | static void pcxi_memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 310 | { |
ae0b78d0 | 311 | outb_p(inb(b->port) | FEPMEM, b->port); |
1da177e4 LT |
312 | } |
313 | ||
f2cf8e25 | 314 | static void pcxi_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 315 | { |
f2cf8e25 | 316 | outb_p(inb(b->port) & ~FEPMEM, b->port); |
1da177e4 LT |
317 | } |
318 | ||
f2cf8e25 | 319 | static void pcxi_globalwinon(struct channel *ch) |
1da177e4 | 320 | { |
f2cf8e25 | 321 | outb_p(FEPMEM, ch->board->port); |
1da177e4 LT |
322 | } |
323 | ||
f2cf8e25 | 324 | static void pcxi_rxwinon(struct channel *ch) |
1da177e4 | 325 | { |
ae0b78d0 | 326 | outb_p(FEPMEM, ch->board->port); |
1da177e4 LT |
327 | } |
328 | ||
f2cf8e25 | 329 | static void pcxi_txwinon(struct channel *ch) |
1da177e4 | 330 | { |
ae0b78d0 | 331 | outb_p(FEPMEM, ch->board->port); |
1da177e4 LT |
332 | } |
333 | ||
f2cf8e25 | 334 | static void pcxi_memoff(struct channel *ch) |
1da177e4 | 335 | { |
f2cf8e25 | 336 | outb_p(0, ch->board->port); |
1da177e4 LT |
337 | } |
338 | ||
f2cf8e25 | 339 | static void pcxi_assertgwinon(struct channel *ch) |
1da177e4 | 340 | { |
f2cf8e25 | 341 | epcaassert(inb(ch->board->port) & FEPMEM, "Global memory off"); |
1da177e4 LT |
342 | } |
343 | ||
f2cf8e25 | 344 | static void pcxi_assertmemoff(struct channel *ch) |
1da177e4 | 345 | { |
f2cf8e25 | 346 | epcaassert(!(inb(ch->board->port) & FEPMEM), "Memory on"); |
1da177e4 LT |
347 | } |
348 | ||
ae0b78d0 AD |
349 | /* |
350 | * Not all of the cards need specific memory windowing routines. Some cards | |
351 | * (Such as PCI) needs no windowing routines at all. We provide these do | |
352 | * nothing routines so that the same code base can be used. The driver will | |
353 | * ALWAYS call a windowing routine if it thinks it needs to; regardless of the | |
354 | * card. However, dependent on the card the routine may or may not do anything. | |
355 | */ | |
f2cf8e25 | 356 | static void dummy_memwinon(struct board_info *b, unsigned int win) |
1da177e4 LT |
357 | { |
358 | } | |
359 | ||
f2cf8e25 | 360 | static void dummy_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 LT |
361 | { |
362 | } | |
363 | ||
f2cf8e25 | 364 | static void dummy_globalwinon(struct channel *ch) |
1da177e4 LT |
365 | { |
366 | } | |
367 | ||
f2cf8e25 | 368 | static void dummy_rxwinon(struct channel *ch) |
1da177e4 LT |
369 | { |
370 | } | |
371 | ||
f2cf8e25 | 372 | static void dummy_txwinon(struct channel *ch) |
1da177e4 LT |
373 | { |
374 | } | |
375 | ||
f2cf8e25 | 376 | static void dummy_memoff(struct channel *ch) |
1da177e4 LT |
377 | { |
378 | } | |
379 | ||
f2cf8e25 | 380 | static void dummy_assertgwinon(struct channel *ch) |
1da177e4 LT |
381 | { |
382 | } | |
383 | ||
f2cf8e25 | 384 | static void dummy_assertmemoff(struct channel *ch) |
1da177e4 LT |
385 | { |
386 | } | |
387 | ||
f2cf8e25 | 388 | static struct channel *verifyChannel(struct tty_struct *tty) |
ae0b78d0 AD |
389 | { |
390 | /* | |
391 | * This routine basically provides a sanity check. It insures that the | |
392 | * channel returned is within the proper range of addresses as well as | |
393 | * properly initialized. If some bogus info gets passed in | |
394 | * through tty->driver_data this should catch it. | |
395 | */ | |
f2cf8e25 | 396 | if (tty) { |
c9f19e96 | 397 | struct channel *ch = tty->driver_data; |
191260a0 | 398 | if (ch >= &digi_channels[0] && ch < &digi_channels[nbdevs]) { |
1da177e4 LT |
399 | if (ch->magic == EPCA_MAGIC) |
400 | return ch; | |
401 | } | |
f2cf8e25 | 402 | } |
1da177e4 | 403 | return NULL; |
ae0b78d0 | 404 | } |
1da177e4 | 405 | |
f2cf8e25 AC |
406 | static void pc_sched_event(struct channel *ch, int event) |
407 | { | |
ae0b78d0 AD |
408 | /* |
409 | * We call this to schedule interrupt processing on some event. The | |
410 | * kernel sees our request and calls the related routine in OUR driver. | |
411 | */ | |
1da177e4 LT |
412 | ch->event |= 1 << event; |
413 | schedule_work(&ch->tqueue); | |
ae0b78d0 | 414 | } |
1da177e4 LT |
415 | |
416 | static void epca_error(int line, char *msg) | |
f2cf8e25 | 417 | { |
191260a0 | 418 | printk(KERN_ERR "epca_error (Digi): line = %d %s\n", line, msg); |
f2cf8e25 | 419 | } |
1da177e4 | 420 | |
ae0b78d0 | 421 | static void pc_close(struct tty_struct *tty, struct file *filp) |
f2cf8e25 | 422 | { |
1da177e4 | 423 | struct channel *ch; |
d1c815e5 | 424 | struct tty_port *port; |
1da177e4 | 425 | unsigned long flags; |
ae0b78d0 AD |
426 | /* |
427 | * verifyChannel returns the channel from the tty struct if it is | |
428 | * valid. This serves as a sanity check. | |
429 | */ | |
191260a0 | 430 | ch = verifyChannel(tty); |
d1c815e5 AC |
431 | if (ch == NULL) |
432 | return; | |
433 | port = &ch->port; | |
1da177e4 | 434 | |
6ed1dbae | 435 | if (tty_port_close_start(port, tty, filp) == 0) |
d1c815e5 | 436 | return; |
1da177e4 | 437 | |
d1c815e5 | 438 | pc_flush_buffer(tty); |
d1c815e5 AC |
439 | shutdown(ch, tty); |
440 | ||
6ed1dbae AC |
441 | tty_port_close_end(port, tty); |
442 | ch->event = 0; /* FIXME: review ch->event locking */ | |
3969ffba | 443 | tty_port_tty_set(port, NULL); |
ae0b78d0 | 444 | } |
1da177e4 | 445 | |
d1c815e5 | 446 | static void shutdown(struct channel *ch, struct tty_struct *tty) |
ae0b78d0 | 447 | { |
1da177e4 | 448 | unsigned long flags; |
bc9a5154 | 449 | struct board_chan __iomem *bc; |
d1c815e5 | 450 | struct tty_port *port = &ch->port; |
1da177e4 | 451 | |
d1c815e5 | 452 | if (!(port->flags & ASYNC_INITIALIZED)) |
1da177e4 LT |
453 | return; |
454 | ||
f2cf8e25 | 455 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 456 | |
f2cf8e25 | 457 | globalwinon(ch); |
1da177e4 LT |
458 | bc = ch->brdchan; |
459 | ||
ae0b78d0 AD |
460 | /* |
461 | * In order for an event to be generated on the receipt of data the | |
462 | * idata flag must be set. Since we are shutting down, this is not | |
463 | * necessary clear this flag. | |
464 | */ | |
1da177e4 | 465 | if (bc) |
f2cf8e25 | 466 | writeb(0, &bc->idata); |
1da177e4 | 467 | |
ae0b78d0 | 468 | /* If we're a modem control device and HUPCL is on, drop RTS & DTR. */ |
f2cf8e25 | 469 | if (tty->termios->c_cflag & HUPCL) { |
1da177e4 LT |
470 | ch->omodem &= ~(ch->m_rts | ch->m_dtr); |
471 | fepcmd(ch, SETMODEM, 0, ch->m_dtr | ch->m_rts, 10, 1); | |
472 | } | |
1da177e4 LT |
473 | memoff(ch); |
474 | ||
ae0b78d0 AD |
475 | /* |
476 | * The channel has officialy been closed. The next time it is opened it | |
477 | * will have to reinitialized. Set a flag to indicate this. | |
478 | */ | |
1da177e4 | 479 | /* Prevent future Digi programmed interrupts from coming active */ |
d1c815e5 | 480 | port->flags &= ~ASYNC_INITIALIZED; |
f2cf8e25 | 481 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 | 482 | } |
1da177e4 LT |
483 | |
484 | static void pc_hangup(struct tty_struct *tty) | |
ae0b78d0 | 485 | { |
1da177e4 | 486 | struct channel *ch; |
d1c815e5 | 487 | |
ae0b78d0 AD |
488 | /* |
489 | * verifyChannel returns the channel from the tty struct if it is | |
490 | * valid. This serves as a sanity check. | |
491 | */ | |
191260a0 AC |
492 | ch = verifyChannel(tty); |
493 | if (ch != NULL) { | |
1da177e4 LT |
494 | unsigned long flags; |
495 | ||
978e595f | 496 | pc_flush_buffer(tty); |
1da177e4 | 497 | tty_ldisc_flush(tty); |
d1c815e5 AC |
498 | shutdown(ch, tty); |
499 | ||
d1c815e5 | 500 | ch->event = 0; /* FIXME: review locking of ch->event */ |
6ed1dbae | 501 | tty_port_hangup(&ch->port); |
ae0b78d0 AD |
502 | } |
503 | } | |
1da177e4 | 504 | |
ae0b78d0 | 505 | static int pc_write(struct tty_struct *tty, |
191260a0 | 506 | const unsigned char *buf, int bytesAvailable) |
ae0b78d0 | 507 | { |
f2cf8e25 AC |
508 | unsigned int head, tail; |
509 | int dataLen; | |
510 | int size; | |
511 | int amountCopied; | |
1da177e4 LT |
512 | struct channel *ch; |
513 | unsigned long flags; | |
514 | int remain; | |
bc9a5154 | 515 | struct board_chan __iomem *bc; |
1da177e4 | 516 | |
ae0b78d0 AD |
517 | /* |
518 | * pc_write is primarily called directly by the kernel routine | |
519 | * tty_write (Though it can also be called by put_char) found in | |
520 | * tty_io.c. pc_write is passed a line discipline buffer where the data | |
521 | * to be written out is stored. The line discipline implementation | |
522 | * itself is done at the kernel level and is not brought into the | |
523 | * driver. | |
524 | */ | |
1da177e4 | 525 | |
ae0b78d0 AD |
526 | /* |
527 | * verifyChannel returns the channel from the tty struct if it is | |
528 | * valid. This serves as a sanity check. | |
529 | */ | |
191260a0 AC |
530 | ch = verifyChannel(tty); |
531 | if (ch == NULL) | |
1da177e4 LT |
532 | return 0; |
533 | ||
534 | /* Make a pointer to the channel data structure found on the board. */ | |
1da177e4 LT |
535 | bc = ch->brdchan; |
536 | size = ch->txbufsize; | |
1da177e4 | 537 | amountCopied = 0; |
1da177e4 | 538 | |
f2cf8e25 | 539 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
540 | globalwinon(ch); |
541 | ||
f2cf8e25 AC |
542 | head = readw(&bc->tin) & (size - 1); |
543 | tail = readw(&bc->tout); | |
1da177e4 | 544 | |
f2cf8e25 AC |
545 | if (tail != readw(&bc->tout)) |
546 | tail = readw(&bc->tout); | |
1da177e4 LT |
547 | tail &= (size - 1); |
548 | ||
ae0b78d0 AD |
549 | if (head >= tail) { |
550 | /* head has not wrapped */ | |
551 | /* | |
552 | * remain (much like dataLen above) represents the total amount | |
553 | * of space available on the card for data. Here dataLen | |
554 | * represents the space existing between the head pointer and | |
555 | * the end of buffer. This is important because a memcpy cannot | |
556 | * be told to automatically wrap around when it hits the buffer | |
557 | * end. | |
558 | */ | |
1da177e4 LT |
559 | dataLen = size - head; |
560 | remain = size - (head - tail) - 1; | |
ae0b78d0 AD |
561 | } else { |
562 | /* head has wrapped around */ | |
1da177e4 LT |
563 | remain = tail - head - 1; |
564 | dataLen = remain; | |
ae0b78d0 AD |
565 | } |
566 | /* | |
567 | * Check the space on the card. If we have more data than space; reduce | |
568 | * the amount of data to fit the space. | |
569 | */ | |
1da177e4 | 570 | bytesAvailable = min(remain, bytesAvailable); |
1da177e4 | 571 | txwinon(ch); |
ae0b78d0 AD |
572 | while (bytesAvailable > 0) { |
573 | /* there is data to copy onto card */ | |
1da177e4 | 574 | |
ae0b78d0 AD |
575 | /* |
576 | * If head is not wrapped, the below will make sure the first | |
577 | * data copy fills to the end of card buffer. | |
578 | */ | |
1da177e4 | 579 | dataLen = min(bytesAvailable, dataLen); |
bc9a5154 | 580 | memcpy_toio(ch->txptr + head, buf, dataLen); |
1da177e4 LT |
581 | buf += dataLen; |
582 | head += dataLen; | |
583 | amountCopied += dataLen; | |
584 | bytesAvailable -= dataLen; | |
585 | ||
f2cf8e25 | 586 | if (head >= size) { |
1da177e4 LT |
587 | head = 0; |
588 | dataLen = tail; | |
589 | } | |
ae0b78d0 | 590 | } |
1da177e4 LT |
591 | ch->statusflags |= TXBUSY; |
592 | globalwinon(ch); | |
f2cf8e25 | 593 | writew(head, &bc->tin); |
1da177e4 | 594 | |
f2cf8e25 | 595 | if ((ch->statusflags & LOWWAIT) == 0) { |
1da177e4 | 596 | ch->statusflags |= LOWWAIT; |
f2cf8e25 | 597 | writeb(1, &bc->ilow); |
1da177e4 LT |
598 | } |
599 | memoff(ch); | |
f2cf8e25 | 600 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
601 | return amountCopied; |
602 | } | |
1da177e4 | 603 | |
1da177e4 | 604 | static int pc_write_room(struct tty_struct *tty) |
ae0b78d0 | 605 | { |
191260a0 | 606 | int remain = 0; |
1da177e4 LT |
607 | struct channel *ch; |
608 | unsigned long flags; | |
609 | unsigned int head, tail; | |
bc9a5154 | 610 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
611 | /* |
612 | * verifyChannel returns the channel from the tty struct if it is | |
613 | * valid. This serves as a sanity check. | |
614 | */ | |
191260a0 AC |
615 | ch = verifyChannel(tty); |
616 | if (ch != NULL) { | |
f2cf8e25 | 617 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
618 | globalwinon(ch); |
619 | ||
620 | bc = ch->brdchan; | |
f2cf8e25 AC |
621 | head = readw(&bc->tin) & (ch->txbufsize - 1); |
622 | tail = readw(&bc->tout); | |
1da177e4 | 623 | |
f2cf8e25 AC |
624 | if (tail != readw(&bc->tout)) |
625 | tail = readw(&bc->tout); | |
1da177e4 LT |
626 | /* Wrap tail if necessary */ |
627 | tail &= (ch->txbufsize - 1); | |
191260a0 AC |
628 | remain = tail - head - 1; |
629 | if (remain < 0) | |
1da177e4 LT |
630 | remain += ch->txbufsize; |
631 | ||
f2cf8e25 | 632 | if (remain && (ch->statusflags & LOWWAIT) == 0) { |
1da177e4 | 633 | ch->statusflags |= LOWWAIT; |
f2cf8e25 | 634 | writeb(1, &bc->ilow); |
1da177e4 LT |
635 | } |
636 | memoff(ch); | |
f2cf8e25 | 637 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 638 | } |
1da177e4 LT |
639 | /* Return how much room is left on card */ |
640 | return remain; | |
ae0b78d0 | 641 | } |
1da177e4 LT |
642 | |
643 | static int pc_chars_in_buffer(struct tty_struct *tty) | |
ae0b78d0 | 644 | { |
1da177e4 LT |
645 | int chars; |
646 | unsigned int ctail, head, tail; | |
647 | int remain; | |
648 | unsigned long flags; | |
649 | struct channel *ch; | |
bc9a5154 | 650 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
651 | /* |
652 | * verifyChannel returns the channel from the tty struct if it is | |
653 | * valid. This serves as a sanity check. | |
654 | */ | |
191260a0 AC |
655 | ch = verifyChannel(tty); |
656 | if (ch == NULL) | |
ae0b78d0 | 657 | return 0; |
1da177e4 | 658 | |
f2cf8e25 | 659 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
660 | globalwinon(ch); |
661 | ||
662 | bc = ch->brdchan; | |
f2cf8e25 AC |
663 | tail = readw(&bc->tout); |
664 | head = readw(&bc->tin); | |
665 | ctail = readw(&ch->mailbox->cout); | |
1da177e4 | 666 | |
191260a0 AC |
667 | if (tail == head && readw(&ch->mailbox->cin) == ctail && |
668 | readb(&bc->tbusy) == 0) | |
1da177e4 | 669 | chars = 0; |
f2cf8e25 AC |
670 | else { /* Begin if some space on the card has been used */ |
671 | head = readw(&bc->tin) & (ch->txbufsize - 1); | |
1da177e4 | 672 | tail &= (ch->txbufsize - 1); |
ae0b78d0 AD |
673 | /* |
674 | * The logic here is basically opposite of the above | |
675 | * pc_write_room here we are finding the amount of bytes in the | |
676 | * buffer filled. Not the amount of bytes empty. | |
677 | */ | |
191260a0 AC |
678 | remain = tail - head - 1; |
679 | if (remain < 0) | |
1da177e4 | 680 | remain += ch->txbufsize; |
1da177e4 | 681 | chars = (int)(ch->txbufsize - remain); |
ae0b78d0 AD |
682 | /* |
683 | * Make it possible to wakeup anything waiting for output in | |
684 | * tty_ioctl.c, etc. | |
685 | * | |
686 | * If not already set. Setup an event to indicate when the | |
687 | * transmit buffer empties. | |
688 | */ | |
1da177e4 | 689 | if (!(ch->statusflags & EMPTYWAIT)) |
191260a0 | 690 | setup_empty_event(tty, ch); |
1da177e4 | 691 | } /* End if some space on the card has been used */ |
1da177e4 | 692 | memoff(ch); |
f2cf8e25 | 693 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 694 | /* Return number of characters residing on card. */ |
ae0b78d0 AD |
695 | return chars; |
696 | } | |
1da177e4 LT |
697 | |
698 | static void pc_flush_buffer(struct tty_struct *tty) | |
ae0b78d0 | 699 | { |
1da177e4 LT |
700 | unsigned int tail; |
701 | unsigned long flags; | |
702 | struct channel *ch; | |
bc9a5154 | 703 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
704 | /* |
705 | * verifyChannel returns the channel from the tty struct if it is | |
706 | * valid. This serves as a sanity check. | |
707 | */ | |
191260a0 AC |
708 | ch = verifyChannel(tty); |
709 | if (ch == NULL) | |
1da177e4 LT |
710 | return; |
711 | ||
f2cf8e25 | 712 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 713 | globalwinon(ch); |
1da177e4 | 714 | bc = ch->brdchan; |
f2cf8e25 | 715 | tail = readw(&bc->tout); |
1da177e4 | 716 | /* Have FEP move tout pointer; effectively flushing transmit buffer */ |
1da177e4 | 717 | fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0); |
1da177e4 | 718 | memoff(ch); |
f2cf8e25 | 719 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 720 | tty_wakeup(tty); |
ae0b78d0 | 721 | } |
1da177e4 LT |
722 | |
723 | static void pc_flush_chars(struct tty_struct *tty) | |
ae0b78d0 AD |
724 | { |
725 | struct channel *ch; | |
726 | /* | |
727 | * verifyChannel returns the channel from the tty struct if it is | |
728 | * valid. This serves as a sanity check. | |
729 | */ | |
191260a0 AC |
730 | ch = verifyChannel(tty); |
731 | if (ch != NULL) { | |
1da177e4 | 732 | unsigned long flags; |
f2cf8e25 | 733 | spin_lock_irqsave(&epca_lock, flags); |
ae0b78d0 AD |
734 | /* |
735 | * If not already set and the transmitter is busy setup an | |
736 | * event to indicate when the transmit empties. | |
737 | */ | |
191260a0 AC |
738 | if ((ch->statusflags & TXBUSY) && |
739 | !(ch->statusflags & EMPTYWAIT)) | |
740 | setup_empty_event(tty, ch); | |
f2cf8e25 | 741 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 742 | } |
ae0b78d0 | 743 | } |
1da177e4 | 744 | |
6ed1dbae | 745 | static int epca_carrier_raised(struct tty_port *port) |
ae0b78d0 | 746 | { |
6ed1dbae AC |
747 | struct channel *ch = container_of(port, struct channel, port); |
748 | if (ch->imodem & ch->dcd) | |
749 | return 1; | |
1da177e4 | 750 | return 0; |
ae0b78d0 | 751 | } |
1da177e4 | 752 | |
6ed1dbae AC |
753 | static void epca_raise_dtr_rts(struct tty_port *port0 |
754 | { | |
755 | } | |
756 | ||
191260a0 | 757 | static int pc_open(struct tty_struct *tty, struct file *filp) |
ae0b78d0 | 758 | { |
1da177e4 | 759 | struct channel *ch; |
d1c815e5 | 760 | struct tty_port *port; |
1da177e4 LT |
761 | unsigned long flags; |
762 | int line, retval, boardnum; | |
bc9a5154 | 763 | struct board_chan __iomem *bc; |
f2cf8e25 | 764 | unsigned int head; |
1da177e4 LT |
765 | |
766 | line = tty->index; | |
f2cf8e25 AC |
767 | if (line < 0 || line >= nbdevs) |
768 | return -ENODEV; | |
1da177e4 LT |
769 | |
770 | ch = &digi_channels[line]; | |
d1c815e5 | 771 | port = &ch->port; |
1da177e4 LT |
772 | boardnum = ch->boardnum; |
773 | ||
774 | /* Check status of board configured in system. */ | |
775 | ||
ae0b78d0 AD |
776 | /* |
777 | * I check to see if the epca_setup routine detected an user error. It | |
778 | * might be better to put this in pc_init, but for the moment it goes | |
779 | * here. | |
780 | */ | |
f2cf8e25 | 781 | if (invalid_lilo_config) { |
1da177e4 | 782 | if (setup_error_code & INVALID_BOARD_TYPE) |
f2cf8e25 | 783 | printk(KERN_ERR "epca: pc_open: Invalid board type specified in kernel options.\n"); |
1da177e4 | 784 | if (setup_error_code & INVALID_NUM_PORTS) |
f2cf8e25 | 785 | printk(KERN_ERR "epca: pc_open: Invalid number of ports specified in kernel options.\n"); |
1da177e4 | 786 | if (setup_error_code & INVALID_MEM_BASE) |
f2cf8e25 | 787 | printk(KERN_ERR "epca: pc_open: Invalid board memory address specified in kernel options.\n"); |
1da177e4 | 788 | if (setup_error_code & INVALID_PORT_BASE) |
f2cf8e25 | 789 | printk(KERN_ERR "epca; pc_open: Invalid board port address specified in kernel options.\n"); |
1da177e4 | 790 | if (setup_error_code & INVALID_BOARD_STATUS) |
f2cf8e25 | 791 | printk(KERN_ERR "epca: pc_open: Invalid board status specified in kernel options.\n"); |
1da177e4 | 792 | if (setup_error_code & INVALID_ALTPIN) |
f2cf8e25 | 793 | printk(KERN_ERR "epca: pc_open: Invalid board altpin specified in kernel options;\n"); |
1da177e4 | 794 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
f2cf8e25 | 795 | return -ENODEV; |
1da177e4 | 796 | } |
f2cf8e25 | 797 | if (boardnum >= num_cards || boards[boardnum].status == DISABLED) { |
1da177e4 LT |
798 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
799 | return(-ENODEV); | |
800 | } | |
ae0b78d0 | 801 | |
11fb09bf HH |
802 | bc = ch->brdchan; |
803 | if (bc == NULL) { | |
1da177e4 | 804 | tty->driver_data = NULL; |
f2cf8e25 | 805 | return -ENODEV; |
1da177e4 LT |
806 | } |
807 | ||
d1c815e5 | 808 | spin_lock_irqsave(&port->lock, flags); |
ae0b78d0 AD |
809 | /* |
810 | * Every time a channel is opened, increment a counter. This is | |
811 | * necessary because we do not wish to flush and shutdown the channel | |
812 | * until the last app holding the channel open, closes it. | |
813 | */ | |
d1c815e5 | 814 | port->count++; |
ae0b78d0 AD |
815 | /* |
816 | * Set a kernel structures pointer to our local channel structure. This | |
817 | * way we can get to it when passed only a tty struct. | |
818 | */ | |
1da177e4 | 819 | tty->driver_data = ch; |
d1c815e5 | 820 | port->tty = tty; |
ae0b78d0 AD |
821 | /* |
822 | * If this is the first time the channel has been opened, initialize | |
823 | * the tty->termios struct otherwise let pc_close handle it. | |
824 | */ | |
d1c815e5 | 825 | spin_lock(&epca_lock); |
1da177e4 LT |
826 | globalwinon(ch); |
827 | ch->statusflags = 0; | |
828 | ||
829 | /* Save boards current modem status */ | |
bc9a5154 | 830 | ch->imodem = readb(&bc->mstat); |
1da177e4 | 831 | |
ae0b78d0 AD |
832 | /* |
833 | * Set receive head and tail ptrs to each other. This indicates no data | |
834 | * available to read. | |
835 | */ | |
f2cf8e25 AC |
836 | head = readw(&bc->rin); |
837 | writew(head, &bc->rout); | |
1da177e4 LT |
838 | |
839 | /* Set the channels associated tty structure */ | |
1da177e4 | 840 | |
ae0b78d0 AD |
841 | /* |
842 | * The below routine generally sets up parity, baud, flow control | |
843 | * issues, etc.... It effect both control flags and input flags. | |
844 | */ | |
191260a0 | 845 | epcaparam(tty, ch); |
1da177e4 | 846 | memoff(ch); |
d1c815e5 AC |
847 | spin_unlock(&epca_lock); |
848 | port->flags |= ASYNC_INITIALIZED; | |
849 | spin_unlock_irqrestore(&port->lock, flags); | |
1da177e4 | 850 | |
6ed1dbae | 851 | retval = tty_port_block_til_ready(port, tty, filp); |
1da177e4 | 852 | if (retval) |
1da177e4 | 853 | return retval; |
ae0b78d0 AD |
854 | /* |
855 | * Set this again in case a hangup set it to zero while this open() was | |
856 | * waiting for the line... | |
857 | */ | |
d1c815e5 AC |
858 | spin_lock_irqsave(&port->lock, flags); |
859 | port->tty = tty; | |
860 | spin_lock(&epca_lock); | |
1da177e4 | 861 | globalwinon(ch); |
1da177e4 | 862 | /* Enable Digi Data events */ |
f2cf8e25 | 863 | writeb(1, &bc->idata); |
1da177e4 | 864 | memoff(ch); |
d1c815e5 AC |
865 | spin_unlock(&epca_lock); |
866 | spin_unlock_irqrestore(&port->lock, flags); | |
1da177e4 | 867 | return 0; |
ae0b78d0 | 868 | } |
1da177e4 | 869 | |
1da177e4 | 870 | static int __init epca_module_init(void) |
ae0b78d0 | 871 | { |
f2cf8e25 | 872 | return pc_init(); |
1da177e4 | 873 | } |
1da177e4 | 874 | module_init(epca_module_init); |
1da177e4 | 875 | |
1da177e4 | 876 | static struct pci_driver epca_driver; |
1da177e4 LT |
877 | |
878 | static void __exit epca_module_exit(void) | |
879 | { | |
1da177e4 LT |
880 | int count, crd; |
881 | struct board_info *bd; | |
882 | struct channel *ch; | |
1da177e4 LT |
883 | |
884 | del_timer_sync(&epca_timer); | |
885 | ||
191260a0 AC |
886 | if (tty_unregister_driver(pc_driver) || |
887 | tty_unregister_driver(pc_info)) { | |
f2cf8e25 | 888 | printk(KERN_WARNING "epca: cleanup_module failed to un-register tty driver\n"); |
1da177e4 LT |
889 | return; |
890 | } | |
891 | put_tty_driver(pc_driver); | |
892 | put_tty_driver(pc_info); | |
893 | ||
ae0b78d0 | 894 | for (crd = 0; crd < num_cards; crd++) { |
1da177e4 | 895 | bd = &boards[crd]; |
ae0b78d0 | 896 | if (!bd) { /* sanity check */ |
1da177e4 LT |
897 | printk(KERN_ERR "<Error> - Digi : cleanup_module failed\n"); |
898 | return; | |
ae0b78d0 | 899 | } |
f2cf8e25 | 900 | ch = card_ptr[crd]; |
ae0b78d0 | 901 | for (count = 0; count < bd->numports; count++, ch++) { |
3969ffba AC |
902 | struct tty_struct *tty = tty_port_tty_get(&ch->port); |
903 | if (tty) { | |
904 | tty_hangup(tty); | |
905 | tty_kref_put(tty); | |
906 | } | |
ae0b78d0 AD |
907 | } |
908 | } | |
909 | pci_unregister_driver(&epca_driver); | |
1da177e4 LT |
910 | } |
911 | module_exit(epca_module_exit); | |
1da177e4 | 912 | |
b68e31d0 | 913 | static const struct tty_operations pc_ops = { |
1da177e4 LT |
914 | .open = pc_open, |
915 | .close = pc_close, | |
916 | .write = pc_write, | |
917 | .write_room = pc_write_room, | |
918 | .flush_buffer = pc_flush_buffer, | |
919 | .chars_in_buffer = pc_chars_in_buffer, | |
920 | .flush_chars = pc_flush_chars, | |
1da177e4 LT |
921 | .ioctl = pc_ioctl, |
922 | .set_termios = pc_set_termios, | |
923 | .stop = pc_stop, | |
924 | .start = pc_start, | |
925 | .throttle = pc_throttle, | |
926 | .unthrottle = pc_unthrottle, | |
927 | .hangup = pc_hangup, | |
dcbf1280 | 928 | .break_ctl = pc_send_break |
1da177e4 LT |
929 | }; |
930 | ||
6ed1dbae AC |
931 | static const struct tty_port_operations epca_port_ops = { |
932 | .carrier_raised = epca_carrier_raised, | |
933 | .raise_dtr_rts = epca_raise_dtr_rts, | |
934 | }; | |
935 | ||
191260a0 | 936 | static int info_open(struct tty_struct *tty, struct file *filp) |
1da177e4 LT |
937 | { |
938 | return 0; | |
939 | } | |
940 | ||
941 | static struct tty_operations info_ops = { | |
942 | .open = info_open, | |
943 | .ioctl = info_ioctl, | |
944 | }; | |
945 | ||
f2cf8e25 | 946 | static int __init pc_init(void) |
ae0b78d0 | 947 | { |
1da177e4 LT |
948 | int crd; |
949 | struct board_info *bd; | |
950 | unsigned char board_id = 0; | |
dabad056 | 951 | int err = -ENOMEM; |
1da177e4 | 952 | |
1da177e4 LT |
953 | int pci_boards_found, pci_count; |
954 | ||
955 | pci_count = 0; | |
1da177e4 LT |
956 | |
957 | pc_driver = alloc_tty_driver(MAX_ALLOC); | |
958 | if (!pc_driver) | |
dabad056 | 959 | goto out1; |
1da177e4 LT |
960 | |
961 | pc_info = alloc_tty_driver(MAX_ALLOC); | |
dabad056 AM |
962 | if (!pc_info) |
963 | goto out2; | |
1da177e4 | 964 | |
ae0b78d0 AD |
965 | /* |
966 | * If epca_setup has not been ran by LILO set num_cards to defaults; | |
967 | * copy board structure defined by digiConfig into drivers board | |
968 | * structure. Note : If LILO has ran epca_setup then epca_setup will | |
969 | * handle defining num_cards as well as copying the data into the board | |
970 | * structure. | |
971 | */ | |
972 | if (!liloconfig) { | |
973 | /* driver has been configured via. epcaconfig */ | |
1da177e4 LT |
974 | nbdevs = NBDEVS; |
975 | num_cards = NUMCARDS; | |
ae0b78d0 AD |
976 | memcpy(&boards, &static_boards, |
977 | sizeof(struct board_info) * NUMCARDS); | |
978 | } | |
1da177e4 | 979 | |
ae0b78d0 AD |
980 | /* |
981 | * Note : If lilo was used to configure the driver and the ignore | |
982 | * epcaconfig option was choosen (digiepca=2) then nbdevs and num_cards | |
983 | * will equal 0 at this point. This is okay; PCI cards will still be | |
984 | * picked up if detected. | |
985 | */ | |
1da177e4 | 986 | |
ae0b78d0 AD |
987 | /* |
988 | * Set up interrupt, we will worry about memory allocation in | |
989 | * post_fep_init. | |
990 | */ | |
191260a0 | 991 | printk(KERN_INFO "DIGI epca driver version %s loaded.\n", VERSION); |
1da177e4 | 992 | |
ae0b78d0 AD |
993 | /* |
994 | * NOTE : This code assumes that the number of ports found in the | |
995 | * boards array is correct. This could be wrong if the card in question | |
996 | * is PCI (And therefore has no ports entry in the boards structure.) | |
997 | * The rest of the information will be valid for PCI because the | |
998 | * beginning of pc_init scans for PCI and determines i/o and base | |
999 | * memory addresses. I am not sure if it is possible to read the number | |
1000 | * of ports supported by the card prior to it being booted (Since that | |
1001 | * is the state it is in when pc_init is run). Because it is not | |
1002 | * possible to query the number of supported ports until after the card | |
1003 | * has booted; we are required to calculate the card_ptrs as the card | |
1004 | * is initialized (Inside post_fep_init). The negative thing about this | |
1005 | * approach is that digiDload's call to GET_INFO will have a bad port | |
1006 | * value. (Since this is called prior to post_fep_init.) | |
1007 | */ | |
1da177e4 | 1008 | pci_boards_found = 0; |
ae0b78d0 | 1009 | if (num_cards < MAXBOARDS) |
1da177e4 LT |
1010 | pci_boards_found += init_PCI(); |
1011 | num_cards += pci_boards_found; | |
1012 | ||
1da177e4 | 1013 | pc_driver->owner = THIS_MODULE; |
ae0b78d0 AD |
1014 | pc_driver->name = "ttyD"; |
1015 | pc_driver->major = DIGI_MAJOR; | |
1da177e4 LT |
1016 | pc_driver->minor_start = 0; |
1017 | pc_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
1018 | pc_driver->subtype = SERIAL_TYPE_NORMAL; | |
1019 | pc_driver->init_termios = tty_std_termios; | |
1020 | pc_driver->init_termios.c_iflag = 0; | |
1021 | pc_driver->init_termios.c_oflag = 0; | |
1022 | pc_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; | |
1023 | pc_driver->init_termios.c_lflag = 0; | |
606d099c AC |
1024 | pc_driver->init_termios.c_ispeed = 9600; |
1025 | pc_driver->init_termios.c_ospeed = 9600; | |
dcbf1280 | 1026 | pc_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; |
1da177e4 LT |
1027 | tty_set_operations(pc_driver, &pc_ops); |
1028 | ||
1029 | pc_info->owner = THIS_MODULE; | |
1030 | pc_info->name = "digi_ctl"; | |
1031 | pc_info->major = DIGIINFOMAJOR; | |
1032 | pc_info->minor_start = 0; | |
1033 | pc_info->type = TTY_DRIVER_TYPE_SERIAL; | |
1034 | pc_info->subtype = SERIAL_TYPE_INFO; | |
1035 | pc_info->init_termios = tty_std_termios; | |
1036 | pc_info->init_termios.c_iflag = 0; | |
1037 | pc_info->init_termios.c_oflag = 0; | |
1038 | pc_info->init_termios.c_lflag = 0; | |
1039 | pc_info->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; | |
606d099c AC |
1040 | pc_info->init_termios.c_ispeed = 9600; |
1041 | pc_info->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
1042 | pc_info->flags = TTY_DRIVER_REAL_RAW; |
1043 | tty_set_operations(pc_info, &info_ops); | |
1044 | ||
1045 | ||
ae0b78d0 AD |
1046 | for (crd = 0; crd < num_cards; crd++) { |
1047 | /* | |
1048 | * This is where the appropriate memory handlers for the | |
1049 | * hardware is set. Everything at runtime blindly jumps through | |
1050 | * these vectors. | |
1051 | */ | |
1da177e4 LT |
1052 | |
1053 | /* defined in epcaconfig.h */ | |
1054 | bd = &boards[crd]; | |
1055 | ||
ae0b78d0 AD |
1056 | switch (bd->type) { |
1057 | case PCXEM: | |
1058 | case EISAXEM: | |
1059 | bd->memwinon = pcxem_memwinon; | |
1060 | bd->memwinoff = pcxem_memwinoff; | |
1061 | bd->globalwinon = pcxem_globalwinon; | |
1062 | bd->txwinon = pcxem_txwinon; | |
1063 | bd->rxwinon = pcxem_rxwinon; | |
1064 | bd->memoff = pcxem_memoff; | |
1065 | bd->assertgwinon = dummy_assertgwinon; | |
1066 | bd->assertmemoff = dummy_assertmemoff; | |
1da177e4 LT |
1067 | break; |
1068 | ||
ae0b78d0 AD |
1069 | case PCIXEM: |
1070 | case PCIXRJ: | |
1071 | case PCIXR: | |
1072 | bd->memwinon = dummy_memwinon; | |
1073 | bd->memwinoff = dummy_memwinoff; | |
1074 | bd->globalwinon = dummy_globalwinon; | |
1075 | bd->txwinon = dummy_txwinon; | |
1076 | bd->rxwinon = dummy_rxwinon; | |
1077 | bd->memoff = dummy_memoff; | |
1078 | bd->assertgwinon = dummy_assertgwinon; | |
1079 | bd->assertmemoff = dummy_assertmemoff; | |
1080 | break; | |
1da177e4 | 1081 | |
ae0b78d0 AD |
1082 | case PCXE: |
1083 | case PCXEVE: | |
1084 | bd->memwinon = pcxe_memwinon; | |
1085 | bd->memwinoff = pcxe_memwinoff; | |
1086 | bd->globalwinon = pcxe_globalwinon; | |
1087 | bd->txwinon = pcxe_txwinon; | |
1088 | bd->rxwinon = pcxe_rxwinon; | |
1089 | bd->memoff = pcxe_memoff; | |
1090 | bd->assertgwinon = dummy_assertgwinon; | |
1091 | bd->assertmemoff = dummy_assertmemoff; | |
1092 | break; | |
1da177e4 | 1093 | |
ae0b78d0 AD |
1094 | case PCXI: |
1095 | case PC64XE: | |
1096 | bd->memwinon = pcxi_memwinon; | |
1097 | bd->memwinoff = pcxi_memwinoff; | |
1098 | bd->globalwinon = pcxi_globalwinon; | |
1099 | bd->txwinon = pcxi_txwinon; | |
1100 | bd->rxwinon = pcxi_rxwinon; | |
1101 | bd->memoff = pcxi_memoff; | |
1102 | bd->assertgwinon = pcxi_assertgwinon; | |
1103 | bd->assertmemoff = pcxi_assertmemoff; | |
1104 | break; | |
1da177e4 | 1105 | |
ae0b78d0 | 1106 | default: |
1da177e4 | 1107 | break; |
ae0b78d0 | 1108 | } |
1da177e4 | 1109 | |
ae0b78d0 AD |
1110 | /* |
1111 | * Some cards need a memory segment to be defined for use in | |
1112 | * transmit and receive windowing operations. These boards are | |
1113 | * listed in the below switch. In the case of the XI the amount | |
1114 | * of memory on the board is variable so the memory_seg is also | |
1115 | * variable. This code determines what they segment should be. | |
1116 | */ | |
1117 | switch (bd->type) { | |
1118 | case PCXE: | |
1119 | case PCXEVE: | |
1120 | case PC64XE: | |
1121 | bd->memory_seg = 0xf000; | |
1122 | break; | |
1da177e4 | 1123 | |
ae0b78d0 AD |
1124 | case PCXI: |
1125 | board_id = inb((int)bd->port); | |
1126 | if ((board_id & 0x1) == 0x1) { | |
1127 | /* it's an XI card */ | |
1128 | /* Is it a 64K board */ | |
1129 | if ((board_id & 0x30) == 0) | |
1130 | bd->memory_seg = 0xf000; | |
1131 | ||
1132 | /* Is it a 128K board */ | |
1133 | if ((board_id & 0x30) == 0x10) | |
1134 | bd->memory_seg = 0xe000; | |
1135 | ||
1136 | /* Is is a 256K board */ | |
1137 | if ((board_id & 0x30) == 0x20) | |
1138 | bd->memory_seg = 0xc000; | |
1139 | ||
1140 | /* Is it a 512K board */ | |
1141 | if ((board_id & 0x30) == 0x30) | |
1142 | bd->memory_seg = 0x8000; | |
1143 | } else | |
191260a0 | 1144 | printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n", (int)bd->port); |
ae0b78d0 AD |
1145 | break; |
1146 | } | |
1147 | } | |
1da177e4 | 1148 | |
dabad056 AM |
1149 | err = tty_register_driver(pc_driver); |
1150 | if (err) { | |
1151 | printk(KERN_ERR "Couldn't register Digi PC/ driver"); | |
1152 | goto out3; | |
1153 | } | |
1da177e4 | 1154 | |
dabad056 AM |
1155 | err = tty_register_driver(pc_info); |
1156 | if (err) { | |
1157 | printk(KERN_ERR "Couldn't register Digi PC/ info "); | |
1158 | goto out4; | |
1159 | } | |
1da177e4 | 1160 | |
ae0b78d0 | 1161 | /* Start up the poller to check for events on all enabled boards */ |
1da177e4 LT |
1162 | init_timer(&epca_timer); |
1163 | epca_timer.function = epcapoll; | |
1164 | mod_timer(&epca_timer, jiffies + HZ/25); | |
1da177e4 LT |
1165 | return 0; |
1166 | ||
dabad056 AM |
1167 | out4: |
1168 | tty_unregister_driver(pc_driver); | |
1169 | out3: | |
1170 | put_tty_driver(pc_info); | |
1171 | out2: | |
1172 | put_tty_driver(pc_driver); | |
1173 | out1: | |
1174 | return err; | |
ae0b78d0 | 1175 | } |
1da177e4 LT |
1176 | |
1177 | static void post_fep_init(unsigned int crd) | |
ae0b78d0 | 1178 | { |
1da177e4 | 1179 | int i; |
bc9a5154 AV |
1180 | void __iomem *memaddr; |
1181 | struct global_data __iomem *gd; | |
1da177e4 | 1182 | struct board_info *bd; |
bc9a5154 | 1183 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
1184 | struct channel *ch; |
1185 | int shrinkmem = 0, lowwater; | |
1da177e4 | 1186 | |
ae0b78d0 AD |
1187 | /* |
1188 | * This call is made by the user via. the ioctl call DIGI_INIT. It is | |
1189 | * responsible for setting up all the card specific stuff. | |
1190 | */ | |
1191 | bd = &boards[crd]; | |
1da177e4 | 1192 | |
ae0b78d0 AD |
1193 | /* |
1194 | * If this is a PCI board, get the port info. Remember PCI cards do not | |
1195 | * have entries into the epcaconfig.h file, so we can't get the number | |
1196 | * of ports from it. Unfortunetly, this means that anyone doing a | |
1197 | * DIGI_GETINFO before the board has booted will get an invalid number | |
1198 | * of ports returned (It should return 0). Calls to DIGI_GETINFO after | |
1199 | * DIGI_INIT has been called will return the proper values. | |
1200 | */ | |
f2cf8e25 | 1201 | if (bd->type >= PCIXEM) { /* Begin get PCI number of ports */ |
ae0b78d0 AD |
1202 | /* |
1203 | * Below we use XEMPORTS as a memory offset regardless of which | |
1204 | * PCI card it is. This is because all of the supported PCI | |
1205 | * cards have the same memory offset for the channel data. This | |
1206 | * will have to be changed if we ever develop a PCI/XE card. | |
1207 | * NOTE : The FEP manual states that the port offset is 0xC22 | |
1208 | * as opposed to 0xC02. This is only true for PC/XE, and PC/XI | |
1209 | * cards; not for the XEM, or CX series. On the PCI cards the | |
1210 | * number of ports is determined by reading a ID PROM located | |
1211 | * in the box attached to the card. The card can then determine | |
1212 | * the index the id to determine the number of ports available. | |
1213 | * (FYI - The id should be located at 0x1ac (And may use up to | |
1214 | * 4 bytes if the box in question is a XEM or CX)). | |
1215 | */ | |
f2cf8e25 AC |
1216 | /* PCI cards are already remapped at this point ISA are not */ |
1217 | bd->numports = readw(bd->re_map_membase + XEMPORTS); | |
191260a0 | 1218 | epcaassert(bd->numports <= 64, "PCI returned a invalid number of ports"); |
1da177e4 | 1219 | nbdevs += (bd->numports); |
f2cf8e25 AC |
1220 | } else { |
1221 | /* Fix up the mappings for ISA/EISA etc */ | |
1222 | /* FIXME: 64K - can we be smarter ? */ | |
191260a0 | 1223 | bd->re_map_membase = ioremap_nocache(bd->membase, 0x10000); |
f2cf8e25 | 1224 | } |
1da177e4 LT |
1225 | |
1226 | if (crd != 0) | |
1227 | card_ptr[crd] = card_ptr[crd-1] + boards[crd-1].numports; | |
1228 | else | |
1229 | card_ptr[crd] = &digi_channels[crd]; /* <- For card 0 only */ | |
1230 | ||
1231 | ch = card_ptr[crd]; | |
1da177e4 LT |
1232 | epcaassert(ch <= &digi_channels[nbdevs - 1], "ch out of range"); |
1233 | ||
f2cf8e25 | 1234 | memaddr = bd->re_map_membase; |
1da177e4 | 1235 | |
ae0b78d0 AD |
1236 | /* |
1237 | * The below assignment will set bc to point at the BEGINING of the | |
1238 | * cards channel structures. For 1 card there will be between 8 and 64 | |
1239 | * of these structures. | |
1240 | */ | |
bc9a5154 | 1241 | bc = memaddr + CHANSTRUCT; |
1da177e4 | 1242 | |
ae0b78d0 AD |
1243 | /* |
1244 | * The below assignment will set gd to point at the BEGINING of global | |
1245 | * memory address 0xc00. The first data in that global memory actually | |
1246 | * starts at address 0xc1a. The command in pointer begins at 0xd10. | |
1247 | */ | |
bc9a5154 | 1248 | gd = memaddr + GLOBAL; |
1da177e4 | 1249 | |
ae0b78d0 AD |
1250 | /* |
1251 | * XEPORTS (address 0xc22) points at the number of channels the card | |
1252 | * supports. (For 64XE, XI, XEM, and XR use 0xc02) | |
1253 | */ | |
191260a0 AC |
1254 | if ((bd->type == PCXEVE || bd->type == PCXE) && |
1255 | (readw(memaddr + XEPORTS) < 3)) | |
1da177e4 LT |
1256 | shrinkmem = 1; |
1257 | if (bd->type < PCIXEM) | |
1258 | if (!request_region((int)bd->port, 4, board_desc[bd->type])) | |
ae0b78d0 | 1259 | return; |
1da177e4 LT |
1260 | memwinon(bd, 0); |
1261 | ||
ae0b78d0 AD |
1262 | /* |
1263 | * Remember ch is the main drivers channels structure, while bc is the | |
1264 | * cards channel structure. | |
1265 | */ | |
1266 | for (i = 0; i < bd->numports; i++, ch++, bc++) { | |
f2cf8e25 | 1267 | unsigned long flags; |
bc9a5154 | 1268 | u16 tseg, rseg; |
1da177e4 | 1269 | |
9ae7b08a | 1270 | tty_port_init(&ch->port); |
6ed1dbae | 1271 | ch->port.ops - &epca_port_ops; |
ae0b78d0 AD |
1272 | ch->brdchan = bc; |
1273 | ch->mailbox = gd; | |
c4028958 | 1274 | INIT_WORK(&ch->tqueue, do_softint); |
ae0b78d0 | 1275 | ch->board = &boards[crd]; |
1da177e4 | 1276 | |
f2cf8e25 AC |
1277 | spin_lock_irqsave(&epca_lock, flags); |
1278 | switch (bd->type) { | |
ae0b78d0 AD |
1279 | /* |
1280 | * Since some of the boards use different bitmaps for | |
1281 | * their control signals we cannot hard code these | |
1282 | * values and retain portability. We virtualize this | |
1283 | * data here. | |
1284 | */ | |
1285 | case EISAXEM: | |
1286 | case PCXEM: | |
1287 | case PCIXEM: | |
1288 | case PCIXRJ: | |
1289 | case PCIXR: | |
1290 | ch->m_rts = 0x02; | |
1291 | ch->m_dcd = 0x80; | |
1292 | ch->m_dsr = 0x20; | |
1293 | ch->m_cts = 0x10; | |
1294 | ch->m_ri = 0x40; | |
1295 | ch->m_dtr = 0x01; | |
1296 | break; | |
1297 | ||
1298 | case PCXE: | |
1299 | case PCXEVE: | |
1300 | case PCXI: | |
1301 | case PC64XE: | |
1302 | ch->m_rts = 0x02; | |
1303 | ch->m_dcd = 0x08; | |
1304 | ch->m_dsr = 0x10; | |
1305 | ch->m_cts = 0x20; | |
1306 | ch->m_ri = 0x40; | |
1307 | ch->m_dtr = 0x80; | |
1308 | break; | |
1309 | } | |
1da177e4 | 1310 | |
f2cf8e25 | 1311 | if (boards[crd].altpin) { |
1da177e4 LT |
1312 | ch->dsr = ch->m_dcd; |
1313 | ch->dcd = ch->m_dsr; | |
1314 | ch->digiext.digi_flags |= DIGI_ALTPIN; | |
ae0b78d0 | 1315 | } else { |
1da177e4 LT |
1316 | ch->dcd = ch->m_dcd; |
1317 | ch->dsr = ch->m_dsr; | |
1318 | } | |
ae0b78d0 | 1319 | |
1da177e4 LT |
1320 | ch->boardnum = crd; |
1321 | ch->channelnum = i; | |
1322 | ch->magic = EPCA_MAGIC; | |
3969ffba | 1323 | tty_port_tty_set(&ch->port, NULL); |
1da177e4 | 1324 | |
f2cf8e25 | 1325 | if (shrinkmem) { |
1da177e4 LT |
1326 | fepcmd(ch, SETBUFFER, 32, 0, 0, 0); |
1327 | shrinkmem = 0; | |
1328 | } | |
1329 | ||
bc9a5154 AV |
1330 | tseg = readw(&bc->tseg); |
1331 | rseg = readw(&bc->rseg); | |
1332 | ||
f2cf8e25 | 1333 | switch (bd->type) { |
ae0b78d0 AD |
1334 | case PCIXEM: |
1335 | case PCIXRJ: | |
1336 | case PCIXR: | |
1337 | /* Cover all the 2MEG cards */ | |
1338 | ch->txptr = memaddr + ((tseg << 4) & 0x1fffff); | |
1339 | ch->rxptr = memaddr + ((rseg << 4) & 0x1fffff); | |
1340 | ch->txwin = FEPWIN | (tseg >> 11); | |
1341 | ch->rxwin = FEPWIN | (rseg >> 11); | |
1342 | break; | |
1343 | ||
1344 | case PCXEM: | |
1345 | case EISAXEM: | |
1346 | /* Cover all the 32K windowed cards */ | |
1347 | /* Mask equal to window size - 1 */ | |
1348 | ch->txptr = memaddr + ((tseg << 4) & 0x7fff); | |
1349 | ch->rxptr = memaddr + ((rseg << 4) & 0x7fff); | |
1350 | ch->txwin = FEPWIN | (tseg >> 11); | |
1351 | ch->rxwin = FEPWIN | (rseg >> 11); | |
1352 | break; | |
1da177e4 | 1353 | |
ae0b78d0 AD |
1354 | case PCXEVE: |
1355 | case PCXE: | |
191260a0 AC |
1356 | ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) |
1357 | & 0x1fff); | |
ae0b78d0 | 1358 | ch->txwin = FEPWIN | ((tseg - bd->memory_seg) >> 9); |
191260a0 AC |
1359 | ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) |
1360 | & 0x1fff); | |
1361 | ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >> 9); | |
ae0b78d0 AD |
1362 | break; |
1363 | ||
1364 | case PCXI: | |
1365 | case PC64XE: | |
1366 | ch->txptr = memaddr + ((tseg - bd->memory_seg) << 4); | |
1367 | ch->rxptr = memaddr + ((rseg - bd->memory_seg) << 4); | |
1368 | ch->txwin = ch->rxwin = 0; | |
1369 | break; | |
1370 | } | |
1da177e4 LT |
1371 | |
1372 | ch->txbufhead = 0; | |
bc9a5154 | 1373 | ch->txbufsize = readw(&bc->tmax) + 1; |
ae0b78d0 | 1374 | |
1da177e4 | 1375 | ch->rxbufhead = 0; |
bc9a5154 | 1376 | ch->rxbufsize = readw(&bc->rmax) + 1; |
ae0b78d0 | 1377 | |
1da177e4 LT |
1378 | lowwater = ch->txbufsize >= 2000 ? 1024 : (ch->txbufsize / 2); |
1379 | ||
1380 | /* Set transmitter low water mark */ | |
1381 | fepcmd(ch, STXLWATER, lowwater, 0, 10, 0); | |
1382 | ||
1383 | /* Set receiver low water mark */ | |
1da177e4 LT |
1384 | fepcmd(ch, SRXLWATER, (ch->rxbufsize / 4), 0, 10, 0); |
1385 | ||
1386 | /* Set receiver high water mark */ | |
1da177e4 LT |
1387 | fepcmd(ch, SRXHWATER, (3 * ch->rxbufsize / 4), 0, 10, 0); |
1388 | ||
f2cf8e25 AC |
1389 | writew(100, &bc->edelay); |
1390 | writeb(1, &bc->idata); | |
ae0b78d0 | 1391 | |
f2cf8e25 AC |
1392 | ch->startc = readb(&bc->startc); |
1393 | ch->stopc = readb(&bc->stopc); | |
1394 | ch->startca = readb(&bc->startca); | |
1395 | ch->stopca = readb(&bc->stopca); | |
ae0b78d0 | 1396 | |
1da177e4 LT |
1397 | ch->fepcflag = 0; |
1398 | ch->fepiflag = 0; | |
1399 | ch->fepoflag = 0; | |
1400 | ch->fepstartc = 0; | |
1401 | ch->fepstopc = 0; | |
1402 | ch->fepstartca = 0; | |
1403 | ch->fepstopca = 0; | |
ae0b78d0 | 1404 | |
6ed1dbae | 1405 | ch->port.close_delay = 50; |
f2cf8e25 AC |
1406 | |
1407 | spin_unlock_irqrestore(&epca_lock, flags); | |
ae0b78d0 | 1408 | } |
1da177e4 | 1409 | |
ae0b78d0 | 1410 | printk(KERN_INFO |
191260a0 AC |
1411 | "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", |
1412 | VERSION, board_desc[bd->type], (long)bd->port, | |
1413 | (long)bd->membase, bd->numports); | |
1da177e4 | 1414 | memwinoff(bd, 0); |
ae0b78d0 | 1415 | } |
1da177e4 LT |
1416 | |
1417 | static void epcapoll(unsigned long ignored) | |
ae0b78d0 | 1418 | { |
1da177e4 LT |
1419 | unsigned long flags; |
1420 | int crd; | |
191260a0 | 1421 | unsigned int head, tail; |
1da177e4 LT |
1422 | struct channel *ch; |
1423 | struct board_info *bd; | |
1424 | ||
ae0b78d0 AD |
1425 | /* |
1426 | * This routine is called upon every timer interrupt. Even though the | |
1427 | * Digi series cards are capable of generating interrupts this method | |
1428 | * of non-looping polling is more efficient. This routine checks for | |
1429 | * card generated events (Such as receive data, are transmit buffer | |
1430 | * empty) and acts on those events. | |
1431 | */ | |
1432 | for (crd = 0; crd < num_cards; crd++) { | |
1da177e4 LT |
1433 | bd = &boards[crd]; |
1434 | ch = card_ptr[crd]; | |
1435 | ||
1436 | if ((bd->status == DISABLED) || digi_poller_inhibited) | |
ae0b78d0 | 1437 | continue; |
1da177e4 | 1438 | |
ae0b78d0 AD |
1439 | /* |
1440 | * assertmemoff is not needed here; indeed it is an empty | |
1441 | * subroutine. It is being kept because future boards may need | |
1442 | * this as well as some legacy boards. | |
1443 | */ | |
f2cf8e25 AC |
1444 | spin_lock_irqsave(&epca_lock, flags); |
1445 | ||
1da177e4 LT |
1446 | assertmemoff(ch); |
1447 | ||
1448 | globalwinon(ch); | |
1449 | ||
ae0b78d0 AD |
1450 | /* |
1451 | * In this case head and tail actually refer to the event queue | |
1452 | * not the transmit or receive queue. | |
1453 | */ | |
f2cf8e25 AC |
1454 | head = readw(&ch->mailbox->ein); |
1455 | tail = readw(&ch->mailbox->eout); | |
1da177e4 | 1456 | |
ae0b78d0 | 1457 | /* If head isn't equal to tail we have an event */ |
1da177e4 LT |
1458 | if (head != tail) |
1459 | doevent(crd); | |
1da177e4 LT |
1460 | memoff(ch); |
1461 | ||
f2cf8e25 | 1462 | spin_unlock_irqrestore(&epca_lock, flags); |
f2cf8e25 | 1463 | } /* End for each card */ |
1da177e4 | 1464 | mod_timer(&epca_timer, jiffies + (HZ / 25)); |
ae0b78d0 | 1465 | } |
1da177e4 LT |
1466 | |
1467 | static void doevent(int crd) | |
ae0b78d0 | 1468 | { |
bc9a5154 | 1469 | void __iomem *eventbuf; |
1da177e4 LT |
1470 | struct channel *ch, *chan0; |
1471 | static struct tty_struct *tty; | |
f2cf8e25 | 1472 | struct board_info *bd; |
bc9a5154 | 1473 | struct board_chan __iomem *bc; |
f2cf8e25 AC |
1474 | unsigned int tail, head; |
1475 | int event, channel; | |
1476 | int mstat, lstat; | |
1da177e4 | 1477 | |
ae0b78d0 AD |
1478 | /* |
1479 | * This subroutine is called by epcapoll when an event is detected | |
1480 | * in the event queue. This routine responds to those events. | |
1481 | */ | |
1da177e4 LT |
1482 | bd = &boards[crd]; |
1483 | ||
1484 | chan0 = card_ptr[crd]; | |
1485 | epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range"); | |
1da177e4 | 1486 | assertgwinon(chan0); |
191260a0 AC |
1487 | while ((tail = readw(&chan0->mailbox->eout)) != |
1488 | (head = readw(&chan0->mailbox->ein))) { | |
1489 | /* Begin while something in event queue */ | |
1da177e4 | 1490 | assertgwinon(chan0); |
f2cf8e25 | 1491 | eventbuf = bd->re_map_membase + tail + ISTART; |
1da177e4 | 1492 | /* Get the channel the event occurred on */ |
f2cf8e25 | 1493 | channel = readb(eventbuf); |
1da177e4 | 1494 | /* Get the actual event code that occurred */ |
f2cf8e25 | 1495 | event = readb(eventbuf + 1); |
ae0b78d0 AD |
1496 | /* |
1497 | * The two assignments below get the current modem status | |
1498 | * (mstat) and the previous modem status (lstat). These are | |
1499 | * useful becuase an event could signal a change in modem | |
1500 | * signals itself. | |
1501 | */ | |
f2cf8e25 AC |
1502 | mstat = readb(eventbuf + 2); |
1503 | lstat = readb(eventbuf + 3); | |
1da177e4 LT |
1504 | |
1505 | ch = chan0 + channel; | |
f2cf8e25 | 1506 | if ((unsigned)channel >= bd->numports || !ch) { |
1da177e4 LT |
1507 | if (channel >= bd->numports) |
1508 | ch = chan0; | |
1509 | bc = ch->brdchan; | |
1510 | goto next; | |
1511 | } | |
1512 | ||
191260a0 AC |
1513 | bc = ch->brdchan; |
1514 | if (bc == NULL) | |
1da177e4 LT |
1515 | goto next; |
1516 | ||
3969ffba | 1517 | tty = tty_port_tty_get(&ch->port); |
f2cf8e25 | 1518 | if (event & DATA_IND) { /* Begin DATA_IND */ |
3969ffba | 1519 | receive_data(ch, tty); |
1da177e4 | 1520 | assertgwinon(ch); |
1da177e4 LT |
1521 | } /* End DATA_IND */ |
1522 | /* else *//* Fix for DCD transition missed bug */ | |
ae0b78d0 | 1523 | if (event & MODEMCHG_IND) { |
1da177e4 | 1524 | /* A modem signal change has been indicated */ |
1da177e4 | 1525 | ch->imodem = mstat; |
6ed1dbae | 1526 | if (test_bit(ASYNC_CHECK_CD, &ch->port.flags)) { |
191260a0 AC |
1527 | /* We are now receiving dcd */ |
1528 | if (mstat & ch->dcd) | |
52d41738 | 1529 | wake_up_interruptible(&ch->port.open_wait); |
191260a0 AC |
1530 | else /* No dcd; hangup */ |
1531 | pc_sched_event(ch, EPCA_EVENT_HANGUP); | |
1da177e4 | 1532 | } |
ae0b78d0 | 1533 | } |
ae0b78d0 AD |
1534 | if (tty) { |
1535 | if (event & BREAK_IND) { | |
1da177e4 | 1536 | /* A break has been indicated */ |
33f0f88f | 1537 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
ae0b78d0 AD |
1538 | tty_schedule_flip(tty); |
1539 | } else if (event & LOWTX_IND) { | |
1540 | if (ch->statusflags & LOWWAIT) { | |
1da177e4 LT |
1541 | ch->statusflags &= ~LOWWAIT; |
1542 | tty_wakeup(tty); | |
ae0b78d0 AD |
1543 | } |
1544 | } else if (event & EMPTYTX_IND) { | |
191260a0 AC |
1545 | /* This event is generated by |
1546 | setup_empty_event */ | |
1da177e4 | 1547 | ch->statusflags &= ~TXBUSY; |
ae0b78d0 | 1548 | if (ch->statusflags & EMPTYWAIT) { |
1da177e4 LT |
1549 | ch->statusflags &= ~EMPTYWAIT; |
1550 | tty_wakeup(tty); | |
ae0b78d0 AD |
1551 | } |
1552 | } | |
3969ffba | 1553 | tty_kref_put(tty); |
ae0b78d0 | 1554 | } |
191260a0 | 1555 | next: |
1da177e4 | 1556 | globalwinon(ch); |
f2cf8e25 AC |
1557 | BUG_ON(!bc); |
1558 | writew(1, &bc->idata); | |
1559 | writew((tail + 4) & (IMAX - ISTART - 4), &chan0->mailbox->eout); | |
1da177e4 | 1560 | globalwinon(chan0); |
1da177e4 | 1561 | } /* End while something in event queue */ |
ae0b78d0 | 1562 | } |
1da177e4 LT |
1563 | |
1564 | static void fepcmd(struct channel *ch, int cmd, int word_or_byte, | |
191260a0 | 1565 | int byte2, int ncmds, int bytecmd) |
ae0b78d0 | 1566 | { |
bc9a5154 | 1567 | unchar __iomem *memaddr; |
1da177e4 LT |
1568 | unsigned int head, cmdTail, cmdStart, cmdMax; |
1569 | long count; | |
1570 | int n; | |
1571 | ||
1572 | /* This is the routine in which commands may be passed to the card. */ | |
1573 | ||
1574 | if (ch->board->status == DISABLED) | |
1da177e4 | 1575 | return; |
1da177e4 | 1576 | assertgwinon(ch); |
1da177e4 | 1577 | /* Remember head (As well as max) is just an offset not a base addr */ |
f2cf8e25 | 1578 | head = readw(&ch->mailbox->cin); |
1da177e4 | 1579 | /* cmdStart is a base address */ |
f2cf8e25 | 1580 | cmdStart = readw(&ch->mailbox->cstart); |
ae0b78d0 AD |
1581 | /* |
1582 | * We do the addition below because we do not want a max pointer | |
1583 | * relative to cmdStart. We want a max pointer that points at the | |
1584 | * physical end of the command queue. | |
1585 | */ | |
f2cf8e25 | 1586 | cmdMax = (cmdStart + 4 + readw(&ch->mailbox->cmax)); |
1da177e4 LT |
1587 | memaddr = ch->board->re_map_membase; |
1588 | ||
f2cf8e25 | 1589 | if (head >= (cmdMax - cmdStart) || (head & 03)) { |
191260a0 AC |
1590 | printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", |
1591 | __LINE__, cmd, head); | |
1592 | printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", | |
1593 | __LINE__, cmdMax, cmdStart); | |
1da177e4 LT |
1594 | return; |
1595 | } | |
f2cf8e25 AC |
1596 | if (bytecmd) { |
1597 | writeb(cmd, memaddr + head + cmdStart + 0); | |
1598 | writeb(ch->channelnum, memaddr + head + cmdStart + 1); | |
1da177e4 | 1599 | /* Below word_or_byte is bits to set */ |
f2cf8e25 | 1600 | writeb(word_or_byte, memaddr + head + cmdStart + 2); |
1da177e4 | 1601 | /* Below byte2 is bits to reset */ |
f2cf8e25 AC |
1602 | writeb(byte2, memaddr + head + cmdStart + 3); |
1603 | } else { | |
1604 | writeb(cmd, memaddr + head + cmdStart + 0); | |
1605 | writeb(ch->channelnum, memaddr + head + cmdStart + 1); | |
1606 | writeb(word_or_byte, memaddr + head + cmdStart + 2); | |
1da177e4 | 1607 | } |
1da177e4 | 1608 | head = (head + 4) & (cmdMax - cmdStart - 4); |
f2cf8e25 | 1609 | writew(head, &ch->mailbox->cin); |
1da177e4 LT |
1610 | count = FEPTIMEOUT; |
1611 | ||
ae0b78d0 | 1612 | for (;;) { |
1da177e4 | 1613 | count--; |
f2cf8e25 | 1614 | if (count == 0) { |
1da177e4 LT |
1615 | printk(KERN_ERR "<Error> - Fep not responding in fepcmd()\n"); |
1616 | return; | |
1617 | } | |
f2cf8e25 AC |
1618 | head = readw(&ch->mailbox->cin); |
1619 | cmdTail = readw(&ch->mailbox->cout); | |
1da177e4 | 1620 | n = (head - cmdTail) & (cmdMax - cmdStart - 4); |
ae0b78d0 AD |
1621 | /* |
1622 | * Basically this will break when the FEP acknowledges the | |
1623 | * command by incrementing cmdTail (Making it equal to head). | |
1624 | */ | |
1da177e4 | 1625 | if (n <= ncmds * (sizeof(short) * 4)) |
ae0b78d0 AD |
1626 | break; |
1627 | } | |
1628 | } | |
1da177e4 | 1629 | |
ae0b78d0 AD |
1630 | /* |
1631 | * Digi products use fields in their channels structures that are very similar | |
1632 | * to the c_cflag and c_iflag fields typically found in UNIX termios | |
1633 | * structures. The below three routines allow mappings between these hardware | |
1634 | * "flags" and their respective Linux flags. | |
1635 | */ | |
1da177e4 | 1636 | static unsigned termios2digi_h(struct channel *ch, unsigned cflag) |
ae0b78d0 | 1637 | { |
1da177e4 LT |
1638 | unsigned res = 0; |
1639 | ||
f2cf8e25 | 1640 | if (cflag & CRTSCTS) { |
1da177e4 LT |
1641 | ch->digiext.digi_flags |= (RTSPACE | CTSPACE); |
1642 | res |= ((ch->m_cts) | (ch->m_rts)); | |
1643 | } | |
1644 | ||
1645 | if (ch->digiext.digi_flags & RTSPACE) | |
1646 | res |= ch->m_rts; | |
1647 | ||
1648 | if (ch->digiext.digi_flags & DTRPACE) | |
1649 | res |= ch->m_dtr; | |
1650 | ||
1651 | if (ch->digiext.digi_flags & CTSPACE) | |
1652 | res |= ch->m_cts; | |
1653 | ||
1654 | if (ch->digiext.digi_flags & DSRPACE) | |
1655 | res |= ch->dsr; | |
1656 | ||
1657 | if (ch->digiext.digi_flags & DCDPACE) | |
1658 | res |= ch->dcd; | |
1659 | ||
1660 | if (res & (ch->m_rts)) | |
1661 | ch->digiext.digi_flags |= RTSPACE; | |
1662 | ||
1663 | if (res & (ch->m_cts)) | |
1664 | ch->digiext.digi_flags |= CTSPACE; | |
1665 | ||
1666 | return res; | |
ae0b78d0 | 1667 | } |
1da177e4 | 1668 | |
1da177e4 | 1669 | static unsigned termios2digi_i(struct channel *ch, unsigned iflag) |
ae0b78d0 AD |
1670 | { |
1671 | unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | | |
191260a0 | 1672 | INPCK | ISTRIP | IXON | IXANY | IXOFF); |
1da177e4 LT |
1673 | if (ch->digiext.digi_flags & DIGI_AIXON) |
1674 | res |= IAIXON; | |
1675 | return res; | |
ae0b78d0 | 1676 | } |
1da177e4 LT |
1677 | |
1678 | static unsigned termios2digi_c(struct channel *ch, unsigned cflag) | |
ae0b78d0 | 1679 | { |
1da177e4 | 1680 | unsigned res = 0; |
ae0b78d0 | 1681 | if (cflag & CBAUDEX) { |
1da177e4 | 1682 | ch->digiext.digi_flags |= DIGI_FAST; |
ae0b78d0 AD |
1683 | /* |
1684 | * HUPCL bit is used by FEP to indicate fast baud table is to | |
1685 | * be used. | |
1686 | */ | |
1da177e4 | 1687 | res |= FEP_HUPCL; |
ae0b78d0 AD |
1688 | } else |
1689 | ch->digiext.digi_flags &= ~DIGI_FAST; | |
1690 | /* | |
1691 | * CBAUD has bit position 0x1000 set these days to indicate Linux | |
1692 | * baud rate remap. Digi hardware can't handle the bit assignment. | |
1693 | * (We use a different bit assignment for high speed.). Clear this | |
1694 | * bit out. | |
1695 | */ | |
1da177e4 | 1696 | res |= cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE); |
ae0b78d0 AD |
1697 | /* |
1698 | * This gets a little confusing. The Digi cards have their own | |
8dfba4d7 | 1699 | * representation of c_cflags controlling baud rate. For the most part |
ae0b78d0 AD |
1700 | * this is identical to the Linux implementation. However; Digi |
1701 | * supports one rate (76800) that Linux doesn't. This means that the | |
1702 | * c_cflag entry that would normally mean 76800 for Digi actually means | |
1703 | * 115200 under Linux. Without the below mapping, a stty 115200 would | |
1704 | * only drive the board at 76800. Since the rate 230400 is also found | |
1705 | * after 76800, the same problem afflicts us when we choose a rate of | |
1706 | * 230400. Without the below modificiation stty 230400 would actually | |
1707 | * give us 115200. | |
1708 | * | |
1709 | * There are two additional differences. The Linux value for CLOCAL | |
1710 | * (0x800; 0004000) has no meaning to the Digi hardware. Also in later | |
1711 | * releases of Linux; the CBAUD define has CBAUDEX (0x1000; 0010000) | |
1712 | * ored into it (CBAUD = 0x100f as opposed to 0xf). CBAUDEX should be | |
1713 | * checked for a screened out prior to termios2digi_c returning. Since | |
1714 | * CLOCAL isn't used by the board this can be ignored as long as the | |
1715 | * returned value is used only by Digi hardware. | |
1716 | */ | |
f2cf8e25 | 1717 | if (cflag & CBAUDEX) { |
ae0b78d0 AD |
1718 | /* |
1719 | * The below code is trying to guarantee that only baud rates | |
1720 | * 115200 and 230400 are remapped. We use exclusive or because | |
1721 | * the various baud rates share common bit positions and | |
1722 | * therefore can't be tested for easily. | |
1723 | */ | |
1724 | if ((!((cflag & 0x7) ^ (B115200 & ~CBAUDEX))) || | |
1da177e4 | 1725 | (!((cflag & 0x7) ^ (B230400 & ~CBAUDEX)))) |
1da177e4 | 1726 | res += 1; |
1da177e4 | 1727 | } |
1da177e4 | 1728 | return res; |
ae0b78d0 | 1729 | } |
1da177e4 | 1730 | |
f2cf8e25 | 1731 | /* Caller must hold the locks */ |
1da177e4 | 1732 | static void epcaparam(struct tty_struct *tty, struct channel *ch) |
ae0b78d0 | 1733 | { |
1da177e4 | 1734 | unsigned int cmdHead; |
606d099c | 1735 | struct ktermios *ts; |
bc9a5154 | 1736 | struct board_chan __iomem *bc; |
1da177e4 LT |
1737 | unsigned mval, hflow, cflag, iflag; |
1738 | ||
1739 | bc = ch->brdchan; | |
11fb09bf | 1740 | epcaassert(bc != NULL, "bc out of range"); |
1da177e4 LT |
1741 | |
1742 | assertgwinon(ch); | |
1da177e4 | 1743 | ts = tty->termios; |
f2cf8e25 AC |
1744 | if ((ts->c_cflag & CBAUD) == 0) { /* Begin CBAUD detected */ |
1745 | cmdHead = readw(&bc->rin); | |
bc9a5154 | 1746 | writew(cmdHead, &bc->rout); |
f2cf8e25 | 1747 | cmdHead = readw(&bc->tin); |
1da177e4 | 1748 | /* Changing baud in mid-stream transmission can be wonderful */ |
ae0b78d0 AD |
1749 | /* |
1750 | * Flush current transmit buffer by setting cmdTail pointer | |
1751 | * (tout) to cmdHead pointer (tin). Hopefully the transmit | |
1752 | * buffer is empty. | |
1753 | */ | |
1da177e4 LT |
1754 | fepcmd(ch, STOUT, (unsigned) cmdHead, 0, 0, 0); |
1755 | mval = 0; | |
ae0b78d0 AD |
1756 | } else { /* Begin CBAUD not detected */ |
1757 | /* | |
1758 | * c_cflags have changed but that change had nothing to do with | |
1759 | * BAUD. Propagate the change to the card. | |
1760 | */ | |
1da177e4 | 1761 | cflag = termios2digi_c(ch, ts->c_cflag); |
f2cf8e25 | 1762 | if (cflag != ch->fepcflag) { |
1da177e4 LT |
1763 | ch->fepcflag = cflag; |
1764 | /* Set baud rate, char size, stop bits, parity */ | |
1765 | fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0); | |
1766 | } | |
ae0b78d0 AD |
1767 | /* |
1768 | * If the user has not forced CLOCAL and if the device is not a | |
1769 | * CALLOUT device (Which is always CLOCAL) we set flags such | |
1770 | * that the driver will wait on carrier detect. | |
1771 | */ | |
1da177e4 | 1772 | if (ts->c_cflag & CLOCAL) |
6ed1dbae | 1773 | clear_bit(ASYNC_CHECK_CD, &ch->port.flags); |
1da177e4 | 1774 | else |
6ed1dbae | 1775 | set_bit(ASYNC_CHECK_CD, &ch->port.flags); |
1da177e4 | 1776 | mval = ch->m_dtr | ch->m_rts; |
1da177e4 | 1777 | } /* End CBAUD not detected */ |
1da177e4 | 1778 | iflag = termios2digi_i(ch, ts->c_iflag); |
1da177e4 | 1779 | /* Check input mode flags */ |
f2cf8e25 | 1780 | if (iflag != ch->fepiflag) { |
1da177e4 | 1781 | ch->fepiflag = iflag; |
ae0b78d0 AD |
1782 | /* |
1783 | * Command sets channels iflag structure on the board. Such | |
1784 | * things as input soft flow control, handling of parity | |
1785 | * errors, and break handling are all set here. | |
191260a0 AC |
1786 | * |
1787 | * break handling, parity handling, input stripping, | |
1788 | * flow control chars | |
ae0b78d0 | 1789 | */ |
1da177e4 LT |
1790 | fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); |
1791 | } | |
ae0b78d0 AD |
1792 | /* |
1793 | * Set the board mint value for this channel. This will cause hardware | |
1794 | * events to be generated each time the DCD signal (Described in mint) | |
1795 | * changes. | |
1796 | */ | |
f2cf8e25 | 1797 | writeb(ch->dcd, &bc->mint); |
1da177e4 LT |
1798 | if ((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD)) |
1799 | if (ch->digiext.digi_flags & DIGI_FORCEDCD) | |
f2cf8e25 AC |
1800 | writeb(0, &bc->mint); |
1801 | ch->imodem = readb(&bc->mstat); | |
1da177e4 | 1802 | hflow = termios2digi_h(ch, ts->c_cflag); |
f2cf8e25 | 1803 | if (hflow != ch->hflow) { |
1da177e4 | 1804 | ch->hflow = hflow; |
ae0b78d0 AD |
1805 | /* |
1806 | * Hard flow control has been selected but the board is not | |
1807 | * using it. Activate hard flow control now. | |
1808 | */ | |
1da177e4 LT |
1809 | fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1); |
1810 | } | |
1da177e4 LT |
1811 | mval ^= ch->modemfake & (mval ^ ch->modem); |
1812 | ||
f2cf8e25 | 1813 | if (ch->omodem ^ mval) { |
1da177e4 | 1814 | ch->omodem = mval; |
ae0b78d0 AD |
1815 | /* |
1816 | * The below command sets the DTR and RTS mstat structure. If | |
1817 | * hard flow control is NOT active these changes will drive the | |
1818 | * output of the actual DTR and RTS lines. If hard flow control | |
1819 | * is active, the changes will be saved in the mstat structure | |
1820 | * and only asserted when hard flow control is turned off. | |
1821 | */ | |
1da177e4 LT |
1822 | |
1823 | /* First reset DTR & RTS; then set them */ | |
1824 | fepcmd(ch, SETMODEM, 0, ((ch->m_dtr)|(ch->m_rts)), 0, 1); | |
1825 | fepcmd(ch, SETMODEM, mval, 0, 0, 1); | |
1da177e4 | 1826 | } |
f2cf8e25 | 1827 | if (ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) { |
1da177e4 LT |
1828 | ch->fepstartc = ch->startc; |
1829 | ch->fepstopc = ch->stopc; | |
ae0b78d0 AD |
1830 | /* |
1831 | * The XON / XOFF characters have changed; propagate these | |
1832 | * changes to the card. | |
1833 | */ | |
1da177e4 LT |
1834 | fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); |
1835 | } | |
f2cf8e25 | 1836 | if (ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) { |
1da177e4 LT |
1837 | ch->fepstartca = ch->startca; |
1838 | ch->fepstopca = ch->stopca; | |
ae0b78d0 AD |
1839 | /* |
1840 | * Similar to the above, this time the auxilarly XON / XOFF | |
1841 | * characters have changed; propagate these changes to the card. | |
1842 | */ | |
1da177e4 LT |
1843 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); |
1844 | } | |
ae0b78d0 | 1845 | } |
1da177e4 | 1846 | |
f2cf8e25 | 1847 | /* Caller holds lock */ |
3969ffba | 1848 | static void receive_data(struct channel *ch, struct tty_struct *tty) |
ae0b78d0 | 1849 | { |
1da177e4 | 1850 | unchar *rptr; |
606d099c | 1851 | struct ktermios *ts = NULL; |
bc9a5154 | 1852 | struct board_chan __iomem *bc; |
f2cf8e25 AC |
1853 | int dataToRead, wrapgap, bytesAvailable; |
1854 | unsigned int tail, head; | |
1da177e4 | 1855 | unsigned int wrapmask; |
1da177e4 | 1856 | |
ae0b78d0 AD |
1857 | /* |
1858 | * This routine is called by doint when a receive data event has taken | |
1859 | * place. | |
1860 | */ | |
1da177e4 | 1861 | globalwinon(ch); |
1da177e4 LT |
1862 | if (ch->statusflags & RXSTOPPED) |
1863 | return; | |
1da177e4 LT |
1864 | if (tty) |
1865 | ts = tty->termios; | |
1da177e4 | 1866 | bc = ch->brdchan; |
f2cf8e25 | 1867 | BUG_ON(!bc); |
1da177e4 LT |
1868 | wrapmask = ch->rxbufsize - 1; |
1869 | ||
ae0b78d0 AD |
1870 | /* |
1871 | * Get the head and tail pointers to the receiver queue. Wrap the head | |
1872 | * pointer if it has reached the end of the buffer. | |
1873 | */ | |
f2cf8e25 | 1874 | head = readw(&bc->rin); |
1da177e4 | 1875 | head &= wrapmask; |
f2cf8e25 | 1876 | tail = readw(&bc->rout) & wrapmask; |
1da177e4 LT |
1877 | |
1878 | bytesAvailable = (head - tail) & wrapmask; | |
1da177e4 LT |
1879 | if (bytesAvailable == 0) |
1880 | return; | |
1881 | ||
ae0b78d0 | 1882 | /* If CREAD bit is off or device not open, set TX tail to head */ |
191260a0 | 1883 | if (!tty || !ts || !(ts->c_cflag & CREAD)) { |
bc9a5154 | 1884 | writew(head, &bc->rout); |
1da177e4 LT |
1885 | return; |
1886 | } | |
1887 | ||
33f0f88f | 1888 | if (tty_buffer_request_room(tty, bytesAvailable + 1) == 0) |
1da177e4 LT |
1889 | return; |
1890 | ||
f2cf8e25 AC |
1891 | if (readb(&bc->orun)) { |
1892 | writeb(0, &bc->orun); | |
191260a0 AC |
1893 | printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n", |
1894 | tty->name); | |
33f0f88f | 1895 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); |
1da177e4 | 1896 | } |
1da177e4 | 1897 | rxwinon(ch); |
191260a0 AC |
1898 | while (bytesAvailable > 0) { |
1899 | /* Begin while there is data on the card */ | |
1da177e4 | 1900 | wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; |
ae0b78d0 AD |
1901 | /* |
1902 | * Even if head has wrapped around only report the amount of | |
1903 | * data to be equal to the size - tail. Remember memcpy can't | |
1904 | * automaticly wrap around the receive buffer. | |
1905 | */ | |
191260a0 AC |
1906 | dataToRead = (wrapgap < bytesAvailable) ? wrapgap |
1907 | : bytesAvailable; | |
ae0b78d0 | 1908 | /* Make sure we don't overflow the buffer */ |
33f0f88f | 1909 | dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead); |
1da177e4 LT |
1910 | if (dataToRead == 0) |
1911 | break; | |
ae0b78d0 AD |
1912 | /* |
1913 | * Move data read from our card into the line disciplines | |
1914 | * buffer for translation if necessary. | |
1915 | */ | |
f2cf8e25 | 1916 | memcpy_fromio(rptr, ch->rxptr + tail, dataToRead); |
1da177e4 LT |
1917 | tail = (tail + dataToRead) & wrapmask; |
1918 | bytesAvailable -= dataToRead; | |
1da177e4 | 1919 | } /* End while there is data on the card */ |
1da177e4 | 1920 | globalwinon(ch); |
f2cf8e25 | 1921 | writew(tail, &bc->rout); |
1da177e4 | 1922 | /* Must be called with global data */ |
3969ffba | 1923 | tty_schedule_flip(tty); |
ae0b78d0 | 1924 | } |
1da177e4 | 1925 | |
ae0b78d0 | 1926 | static int info_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
1927 | unsigned int cmd, unsigned long arg) |
1928 | { | |
ae0b78d0 AD |
1929 | switch (cmd) { |
1930 | case DIGI_GETINFO: | |
1931 | { | |
1932 | struct digi_info di; | |
1da177e4 LT |
1933 | int brd; |
1934 | ||
ae0b78d0 | 1935 | if (get_user(brd, (unsigned int __user *)arg)) |
f2cf8e25 AC |
1936 | return -EFAULT; |
1937 | if (brd < 0 || brd >= num_cards || num_cards == 0) | |
1938 | return -ENODEV; | |
1da177e4 LT |
1939 | |
1940 | memset(&di, 0, sizeof(di)); | |
1941 | ||
ae0b78d0 | 1942 | di.board = brd; |
1da177e4 LT |
1943 | di.status = boards[brd].status; |
1944 | di.type = boards[brd].type ; | |
1945 | di.numports = boards[brd].numports ; | |
f2cf8e25 AC |
1946 | /* Legacy fixups - just move along nothing to see */ |
1947 | di.port = (unsigned char *)boards[brd].port ; | |
1948 | di.membase = (unsigned char *)boards[brd].membase ; | |
1da177e4 | 1949 | |
ae0b78d0 | 1950 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
1da177e4 LT |
1951 | return -EFAULT; |
1952 | break; | |
1953 | ||
ae0b78d0 | 1954 | } |
1da177e4 | 1955 | |
ae0b78d0 AD |
1956 | case DIGI_POLLER: |
1957 | { | |
1958 | int brd = arg & 0xff000000 >> 16; | |
1959 | unsigned char state = arg & 0xff; | |
1da177e4 | 1960 | |
f2cf8e25 AC |
1961 | if (brd < 0 || brd >= num_cards) { |
1962 | printk(KERN_ERR "epca: DIGI POLLER : brd not valid!\n"); | |
ae0b78d0 | 1963 | return -ENODEV; |
1da177e4 | 1964 | } |
ae0b78d0 AD |
1965 | digi_poller_inhibited = state; |
1966 | break; | |
1967 | } | |
1968 | ||
1969 | case DIGI_INIT: | |
1970 | { | |
1971 | /* | |
1972 | * This call is made by the apps to complete the | |
8dfba4d7 | 1973 | * initialization of the board(s). This routine is |
ae0b78d0 AD |
1974 | * responsible for setting the card to its initial |
1975 | * state and setting the drivers control fields to the | |
1976 | * sutianle settings for the card in question. | |
1977 | */ | |
1978 | int crd; | |
1979 | for (crd = 0; crd < num_cards; crd++) | |
1980 | post_fep_init(crd); | |
1981 | break; | |
1982 | } | |
1983 | default: | |
1984 | return -ENOTTY; | |
1985 | } | |
1986 | return 0; | |
1da177e4 | 1987 | } |
1da177e4 LT |
1988 | |
1989 | static int pc_tiocmget(struct tty_struct *tty, struct file *file) | |
1990 | { | |
c9f19e96 | 1991 | struct channel *ch = tty->driver_data; |
bc9a5154 | 1992 | struct board_chan __iomem *bc; |
1da177e4 LT |
1993 | unsigned int mstat, mflag = 0; |
1994 | unsigned long flags; | |
1995 | ||
1996 | if (ch) | |
1997 | bc = ch->brdchan; | |
1998 | else | |
f2cf8e25 | 1999 | return -EINVAL; |
1da177e4 | 2000 | |
f2cf8e25 | 2001 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2002 | globalwinon(ch); |
f2cf8e25 | 2003 | mstat = readb(&bc->mstat); |
1da177e4 | 2004 | memoff(ch); |
f2cf8e25 | 2005 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2006 | |
2007 | if (mstat & ch->m_dtr) | |
2008 | mflag |= TIOCM_DTR; | |
1da177e4 LT |
2009 | if (mstat & ch->m_rts) |
2010 | mflag |= TIOCM_RTS; | |
1da177e4 LT |
2011 | if (mstat & ch->m_cts) |
2012 | mflag |= TIOCM_CTS; | |
1da177e4 LT |
2013 | if (mstat & ch->dsr) |
2014 | mflag |= TIOCM_DSR; | |
1da177e4 LT |
2015 | if (mstat & ch->m_ri) |
2016 | mflag |= TIOCM_RI; | |
1da177e4 LT |
2017 | if (mstat & ch->dcd) |
2018 | mflag |= TIOCM_CD; | |
1da177e4 LT |
2019 | return mflag; |
2020 | } | |
2021 | ||
2022 | static int pc_tiocmset(struct tty_struct *tty, struct file *file, | |
2023 | unsigned int set, unsigned int clear) | |
2024 | { | |
c9f19e96 | 2025 | struct channel *ch = tty->driver_data; |
1da177e4 LT |
2026 | unsigned long flags; |
2027 | ||
f2cf8e25 AC |
2028 | if (!ch) |
2029 | return -EINVAL; | |
1da177e4 | 2030 | |
f2cf8e25 | 2031 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2032 | /* |
ae0b78d0 AD |
2033 | * I think this modemfake stuff is broken. It doesn't correctly reflect |
2034 | * the behaviour desired by the TIOCM* ioctls. Therefore this is | |
2035 | * probably broken. | |
1da177e4 LT |
2036 | */ |
2037 | if (set & TIOCM_RTS) { | |
2038 | ch->modemfake |= ch->m_rts; | |
2039 | ch->modem |= ch->m_rts; | |
2040 | } | |
2041 | if (set & TIOCM_DTR) { | |
2042 | ch->modemfake |= ch->m_dtr; | |
2043 | ch->modem |= ch->m_dtr; | |
2044 | } | |
2045 | if (clear & TIOCM_RTS) { | |
2046 | ch->modemfake |= ch->m_rts; | |
2047 | ch->modem &= ~ch->m_rts; | |
2048 | } | |
2049 | if (clear & TIOCM_DTR) { | |
2050 | ch->modemfake |= ch->m_dtr; | |
2051 | ch->modem &= ~ch->m_dtr; | |
2052 | } | |
1da177e4 | 2053 | globalwinon(ch); |
ae0b78d0 AD |
2054 | /* |
2055 | * The below routine generally sets up parity, baud, flow control | |
2056 | * issues, etc.... It effect both control flags and input flags. | |
2057 | */ | |
191260a0 | 2058 | epcaparam(tty, ch); |
1da177e4 | 2059 | memoff(ch); |
f2cf8e25 | 2060 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2061 | return 0; |
2062 | } | |
2063 | ||
191260a0 AC |
2064 | static int pc_ioctl(struct tty_struct *tty, struct file *file, |
2065 | unsigned int cmd, unsigned long arg) | |
ae0b78d0 | 2066 | { |
1da177e4 | 2067 | digiflow_t dflow; |
1da177e4 LT |
2068 | unsigned long flags; |
2069 | unsigned int mflag, mstat; | |
2070 | unsigned char startc, stopc; | |
bc9a5154 | 2071 | struct board_chan __iomem *bc; |
c9f19e96 | 2072 | struct channel *ch = tty->driver_data; |
1da177e4 | 2073 | void __user *argp = (void __user *)arg; |
ae0b78d0 | 2074 | |
1da177e4 LT |
2075 | if (ch) |
2076 | bc = ch->brdchan; | |
ae0b78d0 | 2077 | else |
f2cf8e25 | 2078 | return -EINVAL; |
ae0b78d0 | 2079 | switch (cmd) { |
ae0b78d0 AD |
2080 | case TIOCMODG: |
2081 | mflag = pc_tiocmget(tty, file); | |
2082 | if (put_user(mflag, (unsigned long __user *)argp)) | |
2083 | return -EFAULT; | |
2084 | break; | |
2085 | case TIOCMODS: | |
2086 | if (get_user(mstat, (unsigned __user *)argp)) | |
2087 | return -EFAULT; | |
2088 | return pc_tiocmset(tty, file, mstat, ~mstat); | |
2089 | case TIOCSDTR: | |
2090 | spin_lock_irqsave(&epca_lock, flags); | |
2091 | ch->omodem |= ch->m_dtr; | |
2092 | globalwinon(ch); | |
2093 | fepcmd(ch, SETMODEM, ch->m_dtr, 0, 10, 1); | |
2094 | memoff(ch); | |
2095 | spin_unlock_irqrestore(&epca_lock, flags); | |
2096 | break; | |
1da177e4 | 2097 | |
ae0b78d0 AD |
2098 | case TIOCCDTR: |
2099 | spin_lock_irqsave(&epca_lock, flags); | |
2100 | ch->omodem &= ~ch->m_dtr; | |
2101 | globalwinon(ch); | |
2102 | fepcmd(ch, SETMODEM, 0, ch->m_dtr, 10, 1); | |
2103 | memoff(ch); | |
2104 | spin_unlock_irqrestore(&epca_lock, flags); | |
2105 | break; | |
2106 | case DIGI_GETA: | |
2107 | if (copy_to_user(argp, &ch->digiext, sizeof(digi_t))) | |
2108 | return -EFAULT; | |
2109 | break; | |
2110 | case DIGI_SETAW: | |
2111 | case DIGI_SETAF: | |
37925e05 | 2112 | lock_kernel(); |
ae0b78d0 | 2113 | if (cmd == DIGI_SETAW) { |
191260a0 AC |
2114 | /* Setup an event to indicate when the transmit |
2115 | buffer empties */ | |
f2cf8e25 | 2116 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 | 2117 | setup_empty_event(tty, ch); |
f2cf8e25 | 2118 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2119 | tty_wait_until_sent(tty, 0); |
2120 | } else { | |
2121 | /* ldisc lock already held in ioctl */ | |
a352def2 AC |
2122 | if (tty->ldisc.ops->flush_buffer) |
2123 | tty->ldisc.ops->flush_buffer(tty); | |
ae0b78d0 | 2124 | } |
37925e05 | 2125 | unlock_kernel(); |
ae0b78d0 AD |
2126 | /* Fall Thru */ |
2127 | case DIGI_SETA: | |
2128 | if (copy_from_user(&ch->digiext, argp, sizeof(digi_t))) | |
2129 | return -EFAULT; | |
2130 | ||
2131 | if (ch->digiext.digi_flags & DIGI_ALTPIN) { | |
2132 | ch->dcd = ch->m_dsr; | |
2133 | ch->dsr = ch->m_dcd; | |
2134 | } else { | |
2135 | ch->dcd = ch->m_dcd; | |
2136 | ch->dsr = ch->m_dsr; | |
1da177e4 | 2137 | } |
1da177e4 | 2138 | |
ae0b78d0 AD |
2139 | spin_lock_irqsave(&epca_lock, flags); |
2140 | globalwinon(ch); | |
1da177e4 | 2141 | |
ae0b78d0 AD |
2142 | /* |
2143 | * The below routine generally sets up parity, baud, flow | |
2144 | * control issues, etc.... It effect both control flags and | |
2145 | * input flags. | |
2146 | */ | |
191260a0 | 2147 | epcaparam(tty, ch); |
ae0b78d0 AD |
2148 | memoff(ch); |
2149 | spin_unlock_irqrestore(&epca_lock, flags); | |
2150 | break; | |
2151 | ||
2152 | case DIGI_GETFLOW: | |
2153 | case DIGI_GETAFLOW: | |
2154 | spin_lock_irqsave(&epca_lock, flags); | |
2155 | globalwinon(ch); | |
2156 | if (cmd == DIGI_GETFLOW) { | |
2157 | dflow.startc = readb(&bc->startc); | |
2158 | dflow.stopc = readb(&bc->stopc); | |
2159 | } else { | |
2160 | dflow.startc = readb(&bc->startca); | |
2161 | dflow.stopc = readb(&bc->stopca); | |
2162 | } | |
2163 | memoff(ch); | |
2164 | spin_unlock_irqrestore(&epca_lock, flags); | |
2165 | ||
2166 | if (copy_to_user(argp, &dflow, sizeof(dflow))) | |
2167 | return -EFAULT; | |
2168 | break; | |
2169 | ||
2170 | case DIGI_SETAFLOW: | |
2171 | case DIGI_SETFLOW: | |
2172 | if (cmd == DIGI_SETFLOW) { | |
2173 | startc = ch->startc; | |
2174 | stopc = ch->stopc; | |
2175 | } else { | |
2176 | startc = ch->startca; | |
2177 | stopc = ch->stopca; | |
2178 | } | |
1da177e4 | 2179 | |
ae0b78d0 AD |
2180 | if (copy_from_user(&dflow, argp, sizeof(dflow))) |
2181 | return -EFAULT; | |
2182 | ||
191260a0 AC |
2183 | if (dflow.startc != startc || dflow.stopc != stopc) { |
2184 | /* Begin if setflow toggled */ | |
f2cf8e25 | 2185 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2186 | globalwinon(ch); |
1da177e4 | 2187 | |
f2cf8e25 | 2188 | if (cmd == DIGI_SETFLOW) { |
ae0b78d0 AD |
2189 | ch->fepstartc = ch->startc = dflow.startc; |
2190 | ch->fepstopc = ch->stopc = dflow.stopc; | |
191260a0 AC |
2191 | fepcmd(ch, SONOFFC, ch->fepstartc, |
2192 | ch->fepstopc, 0, 1); | |
f2cf8e25 | 2193 | } else { |
ae0b78d0 AD |
2194 | ch->fepstartca = ch->startca = dflow.startc; |
2195 | ch->fepstopca = ch->stopca = dflow.stopc; | |
191260a0 AC |
2196 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, |
2197 | ch->fepstopca, 0, 1); | |
1da177e4 LT |
2198 | } |
2199 | ||
ae0b78d0 AD |
2200 | if (ch->statusflags & TXSTOPPED) |
2201 | pc_start(tty); | |
1da177e4 | 2202 | |
ae0b78d0 AD |
2203 | memoff(ch); |
2204 | spin_unlock_irqrestore(&epca_lock, flags); | |
2205 | } /* End if setflow toggled */ | |
2206 | break; | |
2207 | default: | |
2208 | return -ENOIOCTLCMD; | |
2209 | } | |
1da177e4 | 2210 | return 0; |
ae0b78d0 | 2211 | } |
1da177e4 | 2212 | |
606d099c | 2213 | static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
ae0b78d0 | 2214 | { |
1da177e4 LT |
2215 | struct channel *ch; |
2216 | unsigned long flags; | |
ae0b78d0 AD |
2217 | /* |
2218 | * verifyChannel returns the channel from the tty struct if it is | |
2219 | * valid. This serves as a sanity check. | |
2220 | */ | |
191260a0 AC |
2221 | ch = verifyChannel(tty); |
2222 | ||
2223 | if (ch != NULL) { /* Begin if channel valid */ | |
f2cf8e25 | 2224 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
2225 | globalwinon(ch); |
2226 | epcaparam(tty, ch); | |
2227 | memoff(ch); | |
f2cf8e25 | 2228 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2229 | |
2230 | if ((old_termios->c_cflag & CRTSCTS) && | |
2231 | ((tty->termios->c_cflag & CRTSCTS) == 0)) | |
2232 | tty->hw_stopped = 0; | |
2233 | ||
2234 | if (!(old_termios->c_cflag & CLOCAL) && | |
2235 | (tty->termios->c_cflag & CLOCAL)) | |
52d41738 | 2236 | wake_up_interruptible(&ch->port.open_wait); |
1da177e4 | 2237 | |
1da177e4 | 2238 | } /* End if channel valid */ |
ae0b78d0 | 2239 | } |
1da177e4 | 2240 | |
c4028958 | 2241 | static void do_softint(struct work_struct *work) |
ae0b78d0 | 2242 | { |
c4028958 | 2243 | struct channel *ch = container_of(work, struct channel, tqueue); |
1da177e4 | 2244 | /* Called in response to a modem change event */ |
ae0b78d0 | 2245 | if (ch && ch->magic == EPCA_MAGIC) { |
3969ffba | 2246 | struct tty_struct *tty = tty_port_tty_get(&ch->port);; |
1da177e4 | 2247 | |
f2cf8e25 | 2248 | if (tty && tty->driver_data) { |
ae0b78d0 | 2249 | if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) { |
191260a0 | 2250 | tty_hangup(tty); |
52d41738 | 2251 | wake_up_interruptible(&ch->port.open_wait); |
6ed1dbae | 2252 | clear_bit(ASYNC_NORMAL_ACTIVE, &ch->port.flags); |
ae0b78d0 | 2253 | } |
1da177e4 | 2254 | } |
3969ffba | 2255 | tty_kref_put(tty); |
ae0b78d0 AD |
2256 | } |
2257 | } | |
1da177e4 | 2258 | |
ae0b78d0 AD |
2259 | /* |
2260 | * pc_stop and pc_start provide software flow control to the routine and the | |
2261 | * pc_ioctl routine. | |
2262 | */ | |
1da177e4 | 2263 | static void pc_stop(struct tty_struct *tty) |
ae0b78d0 | 2264 | { |
1da177e4 LT |
2265 | struct channel *ch; |
2266 | unsigned long flags; | |
ae0b78d0 AD |
2267 | /* |
2268 | * verifyChannel returns the channel from the tty struct if it is | |
2269 | * valid. This serves as a sanity check. | |
2270 | */ | |
191260a0 AC |
2271 | ch = verifyChannel(tty); |
2272 | if (ch != NULL) { | |
f2cf8e25 | 2273 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 AC |
2274 | if ((ch->statusflags & TXSTOPPED) == 0) { |
2275 | /* Begin if transmit stop requested */ | |
1da177e4 | 2276 | globalwinon(ch); |
1da177e4 | 2277 | /* STOP transmitting now !! */ |
1da177e4 | 2278 | fepcmd(ch, PAUSETX, 0, 0, 0, 0); |
1da177e4 LT |
2279 | ch->statusflags |= TXSTOPPED; |
2280 | memoff(ch); | |
1da177e4 | 2281 | } /* End if transmit stop requested */ |
f2cf8e25 | 2282 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2283 | } |
2284 | } | |
1da177e4 LT |
2285 | |
2286 | static void pc_start(struct tty_struct *tty) | |
ae0b78d0 | 2287 | { |
1da177e4 | 2288 | struct channel *ch; |
ae0b78d0 AD |
2289 | /* |
2290 | * verifyChannel returns the channel from the tty struct if it is | |
2291 | * valid. This serves as a sanity check. | |
2292 | */ | |
191260a0 AC |
2293 | ch = verifyChannel(tty); |
2294 | if (ch != NULL) { | |
1da177e4 | 2295 | unsigned long flags; |
f2cf8e25 | 2296 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 AC |
2297 | /* Just in case output was resumed because of a change |
2298 | in Digi-flow */ | |
2299 | if (ch->statusflags & TXSTOPPED) { | |
2300 | /* Begin transmit resume requested */ | |
bc9a5154 | 2301 | struct board_chan __iomem *bc; |
1da177e4 LT |
2302 | globalwinon(ch); |
2303 | bc = ch->brdchan; | |
2304 | if (ch->statusflags & LOWWAIT) | |
f2cf8e25 | 2305 | writeb(1, &bc->ilow); |
1da177e4 | 2306 | /* Okay, you can start transmitting again... */ |
1da177e4 | 2307 | fepcmd(ch, RESUMETX, 0, 0, 0, 0); |
1da177e4 LT |
2308 | ch->statusflags &= ~TXSTOPPED; |
2309 | memoff(ch); | |
1da177e4 | 2310 | } /* End transmit resume requested */ |
f2cf8e25 | 2311 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2312 | } |
2313 | } | |
2314 | ||
2315 | /* | |
2316 | * The below routines pc_throttle and pc_unthrottle are used to slow (And | |
2317 | * resume) the receipt of data into the kernels receive buffers. The exact | |
2318 | * occurrence of this depends on the size of the kernels receive buffer and | |
2319 | * what the 'watermarks' are set to for that buffer. See the n_ttys.c file for | |
2320 | * more details. | |
2321 | */ | |
2322 | static void pc_throttle(struct tty_struct *tty) | |
2323 | { | |
1da177e4 LT |
2324 | struct channel *ch; |
2325 | unsigned long flags; | |
ae0b78d0 AD |
2326 | /* |
2327 | * verifyChannel returns the channel from the tty struct if it is | |
2328 | * valid. This serves as a sanity check. | |
2329 | */ | |
191260a0 AC |
2330 | ch = verifyChannel(tty); |
2331 | if (ch != NULL) { | |
f2cf8e25 AC |
2332 | spin_lock_irqsave(&epca_lock, flags); |
2333 | if ((ch->statusflags & RXSTOPPED) == 0) { | |
1da177e4 LT |
2334 | globalwinon(ch); |
2335 | fepcmd(ch, PAUSERX, 0, 0, 0, 0); | |
1da177e4 LT |
2336 | ch->statusflags |= RXSTOPPED; |
2337 | memoff(ch); | |
2338 | } | |
f2cf8e25 | 2339 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2340 | } |
2341 | } | |
1da177e4 LT |
2342 | |
2343 | static void pc_unthrottle(struct tty_struct *tty) | |
ae0b78d0 | 2344 | { |
1da177e4 LT |
2345 | struct channel *ch; |
2346 | unsigned long flags; | |
ae0b78d0 AD |
2347 | /* |
2348 | * verifyChannel returns the channel from the tty struct if it is | |
2349 | * valid. This serves as a sanity check. | |
2350 | */ | |
191260a0 AC |
2351 | ch = verifyChannel(tty); |
2352 | if (ch != NULL) { | |
2353 | /* Just in case output was resumed because of a change | |
2354 | in Digi-flow */ | |
f2cf8e25 AC |
2355 | spin_lock_irqsave(&epca_lock, flags); |
2356 | if (ch->statusflags & RXSTOPPED) { | |
1da177e4 | 2357 | globalwinon(ch); |
1da177e4 | 2358 | fepcmd(ch, RESUMERX, 0, 0, 0, 0); |
1da177e4 LT |
2359 | ch->statusflags &= ~RXSTOPPED; |
2360 | memoff(ch); | |
2361 | } | |
f2cf8e25 | 2362 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2363 | } |
2364 | } | |
1da177e4 | 2365 | |
dcbf1280 | 2366 | static int pc_send_break(struct tty_struct *tty, int msec) |
ae0b78d0 | 2367 | { |
c9f19e96 | 2368 | struct channel *ch = tty->driver_data; |
1da177e4 LT |
2369 | unsigned long flags; |
2370 | ||
dcbf1280 | 2371 | if (msec == -1) |
252883e5 AC |
2372 | msec = 0xFFFF; |
2373 | else if (msec > 0xFFFE) | |
2374 | msec = 0xFFFE; | |
2375 | else if (msec < 1) | |
2376 | msec = 1; | |
dcbf1280 | 2377 | |
f2cf8e25 | 2378 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2379 | globalwinon(ch); |
ae0b78d0 AD |
2380 | /* |
2381 | * Maybe I should send an infinite break here, schedule() for msec | |
2382 | * amount of time, and then stop the break. This way, the user can't | |
2383 | * screw up the FEP by causing digi_send_break() to be called (i.e. via | |
2384 | * an ioctl()) more than once in msec amount of time. | |
2385 | * Try this for now... | |
2386 | */ | |
1da177e4 LT |
2387 | fepcmd(ch, SENDBREAK, msec, 0, 10, 0); |
2388 | memoff(ch); | |
f2cf8e25 | 2389 | spin_unlock_irqrestore(&epca_lock, flags); |
dcbf1280 | 2390 | return 0; |
ae0b78d0 | 2391 | } |
1da177e4 | 2392 | |
f2cf8e25 | 2393 | /* Caller MUST hold the lock */ |
1da177e4 | 2394 | static void setup_empty_event(struct tty_struct *tty, struct channel *ch) |
ae0b78d0 | 2395 | { |
bc9a5154 | 2396 | struct board_chan __iomem *bc = ch->brdchan; |
1da177e4 | 2397 | |
1da177e4 LT |
2398 | globalwinon(ch); |
2399 | ch->statusflags |= EMPTYWAIT; | |
ae0b78d0 AD |
2400 | /* |
2401 | * When set the iempty flag request a event to be generated when the | |
2402 | * transmit buffer is empty (If there is no BREAK in progress). | |
2403 | */ | |
f2cf8e25 | 2404 | writeb(1, &bc->iempty); |
1da177e4 | 2405 | memoff(ch); |
ae0b78d0 | 2406 | } |
1da177e4 | 2407 | |
88e88249 DH |
2408 | #ifndef MODULE |
2409 | static void __init epca_setup(char *str, int *ints) | |
ae0b78d0 | 2410 | { |
1da177e4 LT |
2411 | struct board_info board; |
2412 | int index, loop, last; | |
2413 | char *temp, *t2; | |
2414 | unsigned len; | |
2415 | ||
ae0b78d0 AD |
2416 | /* |
2417 | * If this routine looks a little strange it is because it is only | |
2418 | * called if a LILO append command is given to boot the kernel with | |
2419 | * parameters. In this way, we can provide the user a method of | |
2420 | * changing his board configuration without rebuilding the kernel. | |
2421 | */ | |
2422 | if (!liloconfig) | |
2423 | liloconfig = 1; | |
1da177e4 LT |
2424 | |
2425 | memset(&board, 0, sizeof(board)); | |
2426 | ||
2427 | /* Assume the data is int first, later we can change it */ | |
2428 | /* I think that array position 0 of ints holds the number of args */ | |
2429 | for (last = 0, index = 1; index <= ints[0]; index++) | |
ae0b78d0 AD |
2430 | switch (index) { /* Begin parse switch */ |
2431 | case 1: | |
2432 | board.status = ints[index]; | |
2433 | /* | |
2434 | * We check for 2 (As opposed to 1; because 2 is a flag | |
2435 | * instructing the driver to ignore epcaconfig.) For | |
2436 | * this reason we check for 2. | |
2437 | */ | |
191260a0 AC |
2438 | if (board.status == 2) { |
2439 | /* Begin ignore epcaconfig as well as lilo cmd line */ | |
ae0b78d0 AD |
2440 | nbdevs = 0; |
2441 | num_cards = 0; | |
2442 | return; | |
2443 | } /* End ignore epcaconfig as well as lilo cmd line */ | |
2444 | ||
2445 | if (board.status > 2) { | |
191260a0 AC |
2446 | printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", |
2447 | board.status); | |
ae0b78d0 AD |
2448 | invalid_lilo_config = 1; |
2449 | setup_error_code |= INVALID_BOARD_STATUS; | |
2450 | return; | |
2451 | } | |
2452 | last = index; | |
2453 | break; | |
2454 | case 2: | |
2455 | board.type = ints[index]; | |
2456 | if (board.type >= PCIXEM) { | |
2457 | printk(KERN_ERR "epca_setup: Invalid board type 0x%x\n", board.type); | |
2458 | invalid_lilo_config = 1; | |
2459 | setup_error_code |= INVALID_BOARD_TYPE; | |
2460 | return; | |
2461 | } | |
2462 | last = index; | |
2463 | break; | |
2464 | case 3: | |
2465 | board.altpin = ints[index]; | |
2466 | if (board.altpin > 1) { | |
2467 | printk(KERN_ERR "epca_setup: Invalid board altpin 0x%x\n", board.altpin); | |
2468 | invalid_lilo_config = 1; | |
2469 | setup_error_code |= INVALID_ALTPIN; | |
2470 | return; | |
2471 | } | |
2472 | last = index; | |
2473 | break; | |
2474 | ||
2475 | case 4: | |
2476 | board.numports = ints[index]; | |
2477 | if (board.numports < 2 || board.numports > 256) { | |
2478 | printk(KERN_ERR "epca_setup: Invalid board numports 0x%x\n", board.numports); | |
2479 | invalid_lilo_config = 1; | |
2480 | setup_error_code |= INVALID_NUM_PORTS; | |
2481 | return; | |
2482 | } | |
2483 | nbdevs += board.numports; | |
2484 | last = index; | |
2485 | break; | |
1da177e4 | 2486 | |
ae0b78d0 AD |
2487 | case 5: |
2488 | board.port = ints[index]; | |
2489 | if (ints[index] <= 0) { | |
2490 | printk(KERN_ERR "epca_setup: Invalid io port 0x%x\n", (unsigned int)board.port); | |
2491 | invalid_lilo_config = 1; | |
2492 | setup_error_code |= INVALID_PORT_BASE; | |
1da177e4 | 2493 | return; |
ae0b78d0 AD |
2494 | } |
2495 | last = index; | |
2496 | break; | |
2497 | ||
2498 | case 6: | |
2499 | board.membase = ints[index]; | |
2500 | if (ints[index] <= 0) { | |
191260a0 AC |
2501 | printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n", |
2502 | (unsigned int)board.membase); | |
ae0b78d0 AD |
2503 | invalid_lilo_config = 1; |
2504 | setup_error_code |= INVALID_MEM_BASE; | |
2505 | return; | |
2506 | } | |
2507 | last = index; | |
2508 | break; | |
2509 | ||
2510 | default: | |
2511 | printk(KERN_ERR "<Error> - epca_setup: Too many integer parms\n"); | |
2512 | return; | |
1da177e4 LT |
2513 | |
2514 | } /* End parse switch */ | |
2515 | ||
f2cf8e25 | 2516 | while (str && *str) { /* Begin while there is a string arg */ |
1da177e4 LT |
2517 | /* find the next comma or terminator */ |
2518 | temp = str; | |
1da177e4 LT |
2519 | /* While string is not null, and a comma hasn't been found */ |
2520 | while (*temp && (*temp != ',')) | |
2521 | temp++; | |
1da177e4 LT |
2522 | if (!*temp) |
2523 | temp = NULL; | |
2524 | else | |
2525 | *temp++ = 0; | |
1da177e4 LT |
2526 | /* Set index to the number of args + 1 */ |
2527 | index = last + 1; | |
2528 | ||
ae0b78d0 AD |
2529 | switch (index) { |
2530 | case 1: | |
2531 | len = strlen(str); | |
2532 | if (strncmp("Disable", str, len) == 0) | |
2533 | board.status = 0; | |
2534 | else if (strncmp("Enable", str, len) == 0) | |
2535 | board.status = 1; | |
2536 | else { | |
2537 | printk(KERN_ERR "epca_setup: Invalid status %s\n", str); | |
2538 | invalid_lilo_config = 1; | |
2539 | setup_error_code |= INVALID_BOARD_STATUS; | |
2540 | return; | |
2541 | } | |
2542 | last = index; | |
2543 | break; | |
1da177e4 | 2544 | |
ae0b78d0 AD |
2545 | case 2: |
2546 | for (loop = 0; loop < EPCA_NUM_TYPES; loop++) | |
2547 | if (strcmp(board_desc[loop], str) == 0) | |
2548 | break; | |
2549 | /* | |
2550 | * If the index incremented above refers to a | |
2551 | * legitamate board type set it here. | |
2552 | */ | |
2553 | if (index < EPCA_NUM_TYPES) | |
2554 | board.type = loop; | |
2555 | else { | |
2556 | printk(KERN_ERR "epca_setup: Invalid board type: %s\n", str); | |
2557 | invalid_lilo_config = 1; | |
2558 | setup_error_code |= INVALID_BOARD_TYPE; | |
2559 | return; | |
2560 | } | |
2561 | last = index; | |
2562 | break; | |
2563 | ||
2564 | case 3: | |
2565 | len = strlen(str); | |
2566 | if (strncmp("Disable", str, len) == 0) | |
2567 | board.altpin = 0; | |
2568 | else if (strncmp("Enable", str, len) == 0) | |
2569 | board.altpin = 1; | |
2570 | else { | |
2571 | printk(KERN_ERR "epca_setup: Invalid altpin %s\n", str); | |
2572 | invalid_lilo_config = 1; | |
2573 | setup_error_code |= INVALID_ALTPIN; | |
2574 | return; | |
2575 | } | |
2576 | last = index; | |
2577 | break; | |
1da177e4 | 2578 | |
ae0b78d0 AD |
2579 | case 4: |
2580 | t2 = str; | |
2581 | while (isdigit(*t2)) | |
2582 | t2++; | |
1da177e4 | 2583 | |
ae0b78d0 AD |
2584 | if (*t2) { |
2585 | printk(KERN_ERR "epca_setup: Invalid port count %s\n", str); | |
2586 | invalid_lilo_config = 1; | |
2587 | setup_error_code |= INVALID_NUM_PORTS; | |
2588 | return; | |
2589 | } | |
1da177e4 | 2590 | |
ae0b78d0 AD |
2591 | /* |
2592 | * There is not a man page for simple_strtoul but the | |
2593 | * code can be found in vsprintf.c. The first argument | |
2594 | * is the string to translate (To an unsigned long | |
2595 | * obviously), the second argument can be the address | |
2596 | * of any character variable or a NULL. If a variable | |
2597 | * is given, the end pointer of the string will be | |
2598 | * stored in that variable; if a NULL is given the end | |
2599 | * pointer will not be returned. The last argument is | |
2600 | * the base to use. If a 0 is indicated, the routine | |
2601 | * will attempt to determine the proper base by looking | |
2602 | * at the values prefix (A '0' for octal, a 'x' for | |
2603 | * hex, etc ... If a value is given it will use that | |
2604 | * value as the base. | |
2605 | */ | |
2606 | board.numports = simple_strtoul(str, NULL, 0); | |
2607 | nbdevs += board.numports; | |
2608 | last = index; | |
2609 | break; | |
2610 | ||
2611 | case 5: | |
2612 | t2 = str; | |
2613 | while (isxdigit(*t2)) | |
2614 | t2++; | |
2615 | ||
2616 | if (*t2) { | |
2617 | printk(KERN_ERR "epca_setup: Invalid i/o address %s\n", str); | |
2618 | invalid_lilo_config = 1; | |
2619 | setup_error_code |= INVALID_PORT_BASE; | |
2620 | return; | |
2621 | } | |
2622 | ||
2623 | board.port = simple_strtoul(str, NULL, 16); | |
2624 | last = index; | |
2625 | break; | |
2626 | ||
2627 | case 6: | |
2628 | t2 = str; | |
2629 | while (isxdigit(*t2)) | |
2630 | t2++; | |
2631 | ||
2632 | if (*t2) { | |
191260a0 | 2633 | printk(KERN_ERR "epca_setup: Invalid memory base %s\n", str); |
ae0b78d0 AD |
2634 | invalid_lilo_config = 1; |
2635 | setup_error_code |= INVALID_MEM_BASE; | |
1da177e4 | 2636 | return; |
ae0b78d0 AD |
2637 | } |
2638 | board.membase = simple_strtoul(str, NULL, 16); | |
2639 | last = index; | |
2640 | break; | |
2641 | default: | |
2642 | printk(KERN_ERR "epca: Too many string parms\n"); | |
2643 | return; | |
1da177e4 LT |
2644 | } |
2645 | str = temp; | |
1da177e4 LT |
2646 | } /* End while there is a string arg */ |
2647 | ||
f2cf8e25 AC |
2648 | if (last < 6) { |
2649 | printk(KERN_ERR "epca: Insufficient parms specified\n"); | |
1da177e4 LT |
2650 | return; |
2651 | } | |
ae0b78d0 | 2652 | |
1da177e4 | 2653 | /* I should REALLY validate the stuff here */ |
1da177e4 | 2654 | /* Copies our local copy of board into boards */ |
191260a0 | 2655 | memcpy((void *)&boards[num_cards], (void *)&board, sizeof(board)); |
1da177e4 | 2656 | /* Does this get called once per lilo arg are what ? */ |
ae0b78d0 AD |
2657 | printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n", |
2658 | num_cards, board_desc[board.type], | |
1da177e4 | 2659 | board.numports, (int)board.port, (unsigned int) board.membase); |
1da177e4 | 2660 | num_cards++; |
ae0b78d0 | 2661 | } |
1da177e4 | 2662 | |
88e88249 DH |
2663 | static int __init epca_real_setup(char *str) |
2664 | { | |
2665 | int ints[11]; | |
2666 | ||
2667 | epca_setup(get_options(str, 11, ints), ints); | |
2668 | return 1; | |
2669 | } | |
2670 | ||
2671 | __setup("digiepca", epca_real_setup); | |
2672 | #endif | |
2673 | ||
1da177e4 LT |
2674 | enum epic_board_types { |
2675 | brd_xr = 0, | |
2676 | brd_xem, | |
2677 | brd_cx, | |
2678 | brd_xrj, | |
2679 | }; | |
2680 | ||
1da177e4 LT |
2681 | /* indexed directly by epic_board_types enum */ |
2682 | static struct { | |
2683 | unsigned char board_type; | |
2684 | unsigned bar_idx; /* PCI base address region */ | |
2685 | } epca_info_tbl[] = { | |
2686 | { PCIXR, 0, }, | |
2687 | { PCIXEM, 0, }, | |
2688 | { PCICX, 0, }, | |
2689 | { PCIXRJ, 2, }, | |
2690 | }; | |
2691 | ||
ae0b78d0 | 2692 | static int __devinit epca_init_one(struct pci_dev *pdev, |
1da177e4 LT |
2693 | const struct pci_device_id *ent) |
2694 | { | |
2695 | static int board_num = -1; | |
2696 | int board_idx, info_idx = ent->driver_data; | |
2697 | unsigned long addr; | |
2698 | ||
2699 | if (pci_enable_device(pdev)) | |
2700 | return -EIO; | |
2701 | ||
2702 | board_num++; | |
2703 | board_idx = board_num + num_cards; | |
2704 | if (board_idx >= MAXBOARDS) | |
2705 | goto err_out; | |
ae0b78d0 | 2706 | |
191260a0 | 2707 | addr = pci_resource_start(pdev, epca_info_tbl[info_idx].bar_idx); |
1da177e4 | 2708 | if (!addr) { |
191260a0 | 2709 | printk(KERN_ERR PFX "PCI region #%d not available (size 0)\n", |
1da177e4 LT |
2710 | epca_info_tbl[info_idx].bar_idx); |
2711 | goto err_out; | |
2712 | } | |
2713 | ||
2714 | boards[board_idx].status = ENABLED; | |
2715 | boards[board_idx].type = epca_info_tbl[info_idx].board_type; | |
2716 | boards[board_idx].numports = 0x0; | |
f2cf8e25 AC |
2717 | boards[board_idx].port = addr + PCI_IO_OFFSET; |
2718 | boards[board_idx].membase = addr; | |
1da177e4 | 2719 | |
191260a0 AC |
2720 | if (!request_mem_region(addr + PCI_IO_OFFSET, 0x200000, "epca")) { |
2721 | printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", | |
1da177e4 LT |
2722 | 0x200000, addr + PCI_IO_OFFSET); |
2723 | goto err_out; | |
2724 | } | |
2725 | ||
191260a0 AC |
2726 | boards[board_idx].re_map_port = ioremap_nocache(addr + PCI_IO_OFFSET, |
2727 | 0x200000); | |
1da177e4 | 2728 | if (!boards[board_idx].re_map_port) { |
191260a0 | 2729 | printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
1da177e4 LT |
2730 | 0x200000, addr + PCI_IO_OFFSET); |
2731 | goto err_out_free_pciio; | |
2732 | } | |
2733 | ||
191260a0 AC |
2734 | if (!request_mem_region(addr, 0x200000, "epca")) { |
2735 | printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", | |
1da177e4 LT |
2736 | 0x200000, addr); |
2737 | goto err_out_free_iounmap; | |
2738 | } | |
2739 | ||
191260a0 | 2740 | boards[board_idx].re_map_membase = ioremap_nocache(addr, 0x200000); |
1da177e4 | 2741 | if (!boards[board_idx].re_map_membase) { |
191260a0 | 2742 | printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
1da177e4 LT |
2743 | 0x200000, addr + PCI_IO_OFFSET); |
2744 | goto err_out_free_memregion; | |
2745 | } | |
2746 | ||
ae0b78d0 AD |
2747 | /* |
2748 | * I don't know what the below does, but the hardware guys say its | |
2749 | * required on everything except PLX (In this case XRJ). | |
2750 | */ | |
1da177e4 | 2751 | if (info_idx != brd_xrj) { |
ae0b78d0 | 2752 | pci_write_config_byte(pdev, 0x40, 0); |
1da177e4 LT |
2753 | pci_write_config_byte(pdev, 0x46, 0); |
2754 | } | |
ae0b78d0 | 2755 | |
1da177e4 LT |
2756 | return 0; |
2757 | ||
2758 | err_out_free_memregion: | |
191260a0 | 2759 | release_mem_region(addr, 0x200000); |
1da177e4 | 2760 | err_out_free_iounmap: |
191260a0 | 2761 | iounmap(boards[board_idx].re_map_port); |
1da177e4 | 2762 | err_out_free_pciio: |
191260a0 | 2763 | release_mem_region(addr + PCI_IO_OFFSET, 0x200000); |
1da177e4 LT |
2764 | err_out: |
2765 | return -ENODEV; | |
2766 | } | |
2767 | ||
2768 | ||
2769 | static struct pci_device_id epca_pci_tbl[] = { | |
2770 | { PCI_VENDOR_DIGI, PCI_DEVICE_XR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xr }, | |
2771 | { PCI_VENDOR_DIGI, PCI_DEVICE_XEM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xem }, | |
2772 | { PCI_VENDOR_DIGI, PCI_DEVICE_CX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_cx }, | |
2773 | { PCI_VENDOR_DIGI, PCI_DEVICE_XRJ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xrj }, | |
2774 | { 0, } | |
2775 | }; | |
2776 | ||
2777 | MODULE_DEVICE_TABLE(pci, epca_pci_tbl); | |
2778 | ||
11fb09bf | 2779 | static int __init init_PCI(void) |
ae0b78d0 | 2780 | { |
191260a0 | 2781 | memset(&epca_driver, 0, sizeof(epca_driver)); |
1da177e4 LT |
2782 | epca_driver.name = "epca"; |
2783 | epca_driver.id_table = epca_pci_tbl; | |
2784 | epca_driver.probe = epca_init_one; | |
2785 | ||
2786 | return pci_register_driver(&epca_driver); | |
f2cf8e25 | 2787 | } |
1da177e4 LT |
2788 | |
2789 | MODULE_LICENSE("GPL"); |