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 *); | |
1da177e4 LT |
167 | static int pc_open(struct tty_struct *, struct file *); |
168 | static void post_fep_init(unsigned int crd); | |
169 | static void epcapoll(unsigned long); | |
170 | static void doevent(int); | |
171 | static void fepcmd(struct channel *, int, int, int, int, int); | |
172 | static unsigned termios2digi_h(struct channel *ch, unsigned); | |
173 | static unsigned termios2digi_i(struct channel *ch, unsigned); | |
174 | static unsigned termios2digi_c(struct channel *ch, unsigned); | |
175 | static void epcaparam(struct tty_struct *, struct channel *); | |
3969ffba | 176 | static void receive_data(struct channel *, struct tty_struct *tty); |
1da177e4 | 177 | static int pc_ioctl(struct tty_struct *, struct file *, |
191260a0 | 178 | unsigned int, unsigned long); |
1da177e4 | 179 | static int info_ioctl(struct tty_struct *, struct file *, |
191260a0 | 180 | unsigned int, unsigned long); |
606d099c | 181 | static void pc_set_termios(struct tty_struct *, struct ktermios *); |
c4028958 | 182 | static void do_softint(struct work_struct *work); |
1da177e4 LT |
183 | static void pc_stop(struct tty_struct *); |
184 | static void pc_start(struct tty_struct *); | |
191260a0 | 185 | static void pc_throttle(struct tty_struct *tty); |
1da177e4 | 186 | static void pc_unthrottle(struct tty_struct *tty); |
dcbf1280 | 187 | static int pc_send_break(struct tty_struct *tty, int msec); |
1da177e4 | 188 | static void setup_empty_event(struct tty_struct *tty, struct channel *ch); |
1da177e4 | 189 | |
1da177e4 | 190 | static int pc_write(struct tty_struct *, const unsigned char *, int); |
f2cf8e25 | 191 | static int pc_init(void); |
1da177e4 | 192 | static int init_PCI(void); |
1da177e4 | 193 | |
ae0b78d0 AD |
194 | /* |
195 | * Table of functions for each board to handle memory. Mantaining parallelism | |
196 | * is a *very* good idea here. The idea is for the runtime code to blindly call | |
197 | * these functions, not knowing/caring about the underlying hardware. This | |
198 | * stuff should contain no conditionals; if more functionality is needed a | |
199 | * different entry should be established. These calls are the interface calls | |
200 | * and are the only functions that should be accessed. Anyone caught making | |
201 | * direct calls deserves what they get. | |
202 | */ | |
f2cf8e25 | 203 | static void memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 204 | { |
ae0b78d0 | 205 | b->memwinon(b, win); |
1da177e4 LT |
206 | } |
207 | ||
f2cf8e25 | 208 | static void memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 209 | { |
ae0b78d0 | 210 | b->memwinoff(b, win); |
1da177e4 LT |
211 | } |
212 | ||
f2cf8e25 | 213 | static void globalwinon(struct channel *ch) |
1da177e4 | 214 | { |
ae0b78d0 | 215 | ch->board->globalwinon(ch); |
1da177e4 LT |
216 | } |
217 | ||
f2cf8e25 | 218 | static void rxwinon(struct channel *ch) |
1da177e4 | 219 | { |
ae0b78d0 | 220 | ch->board->rxwinon(ch); |
1da177e4 LT |
221 | } |
222 | ||
f2cf8e25 | 223 | static void txwinon(struct channel *ch) |
1da177e4 | 224 | { |
ae0b78d0 | 225 | ch->board->txwinon(ch); |
1da177e4 LT |
226 | } |
227 | ||
f2cf8e25 | 228 | static void memoff(struct channel *ch) |
1da177e4 | 229 | { |
ae0b78d0 | 230 | ch->board->memoff(ch); |
1da177e4 | 231 | } |
f2cf8e25 | 232 | static void assertgwinon(struct channel *ch) |
1da177e4 | 233 | { |
ae0b78d0 | 234 | ch->board->assertgwinon(ch); |
1da177e4 LT |
235 | } |
236 | ||
f2cf8e25 | 237 | static void assertmemoff(struct channel *ch) |
1da177e4 | 238 | { |
ae0b78d0 | 239 | ch->board->assertmemoff(ch); |
1da177e4 LT |
240 | } |
241 | ||
ae0b78d0 | 242 | /* PCXEM windowing is the same as that used in the PCXR and CX series cards. */ |
f2cf8e25 | 243 | static void pcxem_memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 244 | { |
191260a0 | 245 | outb_p(FEPWIN | win, b->port + 1); |
1da177e4 LT |
246 | } |
247 | ||
f2cf8e25 | 248 | static void pcxem_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 249 | { |
f2cf8e25 | 250 | outb_p(0, b->port + 1); |
1da177e4 LT |
251 | } |
252 | ||
f2cf8e25 | 253 | static void pcxem_globalwinon(struct channel *ch) |
1da177e4 | 254 | { |
191260a0 | 255 | outb_p(FEPWIN, (int)ch->board->port + 1); |
1da177e4 LT |
256 | } |
257 | ||
f2cf8e25 | 258 | static void pcxem_rxwinon(struct channel *ch) |
1da177e4 LT |
259 | { |
260 | outb_p(ch->rxwin, (int)ch->board->port + 1); | |
261 | } | |
262 | ||
f2cf8e25 | 263 | static void pcxem_txwinon(struct channel *ch) |
1da177e4 LT |
264 | { |
265 | outb_p(ch->txwin, (int)ch->board->port + 1); | |
266 | } | |
267 | ||
f2cf8e25 | 268 | static void pcxem_memoff(struct channel *ch) |
1da177e4 LT |
269 | { |
270 | outb_p(0, (int)ch->board->port + 1); | |
271 | } | |
272 | ||
273 | /* ----------------- Begin pcxe memory window stuff ------------------ */ | |
f2cf8e25 | 274 | static void pcxe_memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 275 | { |
ae0b78d0 | 276 | outb_p(FEPWIN | win, b->port + 1); |
1da177e4 LT |
277 | } |
278 | ||
f2cf8e25 | 279 | static void pcxe_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 280 | { |
ae0b78d0 | 281 | outb_p(inb(b->port) & ~FEPMEM, b->port + 1); |
f2cf8e25 | 282 | outb_p(0, b->port + 1); |
1da177e4 LT |
283 | } |
284 | ||
f2cf8e25 | 285 | static void pcxe_globalwinon(struct channel *ch) |
1da177e4 | 286 | { |
ae0b78d0 | 287 | outb_p(FEPWIN, (int)ch->board->port + 1); |
1da177e4 LT |
288 | } |
289 | ||
f2cf8e25 | 290 | static void pcxe_rxwinon(struct channel *ch) |
1da177e4 | 291 | { |
ae0b78d0 | 292 | outb_p(ch->rxwin, (int)ch->board->port + 1); |
1da177e4 LT |
293 | } |
294 | ||
f2cf8e25 | 295 | static void pcxe_txwinon(struct channel *ch) |
1da177e4 | 296 | { |
ae0b78d0 | 297 | outb_p(ch->txwin, (int)ch->board->port + 1); |
1da177e4 LT |
298 | } |
299 | ||
f2cf8e25 | 300 | static void pcxe_memoff(struct channel *ch) |
1da177e4 LT |
301 | { |
302 | outb_p(0, (int)ch->board->port); | |
303 | outb_p(0, (int)ch->board->port + 1); | |
304 | } | |
305 | ||
306 | /* ------------- Begin pc64xe and pcxi memory window stuff -------------- */ | |
f2cf8e25 | 307 | static void pcxi_memwinon(struct board_info *b, unsigned int win) |
1da177e4 | 308 | { |
ae0b78d0 | 309 | outb_p(inb(b->port) | FEPMEM, b->port); |
1da177e4 LT |
310 | } |
311 | ||
f2cf8e25 | 312 | static void pcxi_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 | 313 | { |
f2cf8e25 | 314 | outb_p(inb(b->port) & ~FEPMEM, b->port); |
1da177e4 LT |
315 | } |
316 | ||
f2cf8e25 | 317 | static void pcxi_globalwinon(struct channel *ch) |
1da177e4 | 318 | { |
f2cf8e25 | 319 | outb_p(FEPMEM, ch->board->port); |
1da177e4 LT |
320 | } |
321 | ||
f2cf8e25 | 322 | static void pcxi_rxwinon(struct channel *ch) |
1da177e4 | 323 | { |
ae0b78d0 | 324 | outb_p(FEPMEM, ch->board->port); |
1da177e4 LT |
325 | } |
326 | ||
f2cf8e25 | 327 | static void pcxi_txwinon(struct channel *ch) |
1da177e4 | 328 | { |
ae0b78d0 | 329 | outb_p(FEPMEM, ch->board->port); |
1da177e4 LT |
330 | } |
331 | ||
f2cf8e25 | 332 | static void pcxi_memoff(struct channel *ch) |
1da177e4 | 333 | { |
f2cf8e25 | 334 | outb_p(0, ch->board->port); |
1da177e4 LT |
335 | } |
336 | ||
f2cf8e25 | 337 | static void pcxi_assertgwinon(struct channel *ch) |
1da177e4 | 338 | { |
f2cf8e25 | 339 | epcaassert(inb(ch->board->port) & FEPMEM, "Global memory off"); |
1da177e4 LT |
340 | } |
341 | ||
f2cf8e25 | 342 | static void pcxi_assertmemoff(struct channel *ch) |
1da177e4 | 343 | { |
f2cf8e25 | 344 | epcaassert(!(inb(ch->board->port) & FEPMEM), "Memory on"); |
1da177e4 LT |
345 | } |
346 | ||
ae0b78d0 AD |
347 | /* |
348 | * Not all of the cards need specific memory windowing routines. Some cards | |
349 | * (Such as PCI) needs no windowing routines at all. We provide these do | |
350 | * nothing routines so that the same code base can be used. The driver will | |
351 | * ALWAYS call a windowing routine if it thinks it needs to; regardless of the | |
352 | * card. However, dependent on the card the routine may or may not do anything. | |
353 | */ | |
f2cf8e25 | 354 | static void dummy_memwinon(struct board_info *b, unsigned int win) |
1da177e4 LT |
355 | { |
356 | } | |
357 | ||
f2cf8e25 | 358 | static void dummy_memwinoff(struct board_info *b, unsigned int win) |
1da177e4 LT |
359 | { |
360 | } | |
361 | ||
f2cf8e25 | 362 | static void dummy_globalwinon(struct channel *ch) |
1da177e4 LT |
363 | { |
364 | } | |
365 | ||
f2cf8e25 | 366 | static void dummy_rxwinon(struct channel *ch) |
1da177e4 LT |
367 | { |
368 | } | |
369 | ||
f2cf8e25 | 370 | static void dummy_txwinon(struct channel *ch) |
1da177e4 LT |
371 | { |
372 | } | |
373 | ||
f2cf8e25 | 374 | static void dummy_memoff(struct channel *ch) |
1da177e4 LT |
375 | { |
376 | } | |
377 | ||
f2cf8e25 | 378 | static void dummy_assertgwinon(struct channel *ch) |
1da177e4 LT |
379 | { |
380 | } | |
381 | ||
f2cf8e25 | 382 | static void dummy_assertmemoff(struct channel *ch) |
1da177e4 LT |
383 | { |
384 | } | |
385 | ||
f2cf8e25 | 386 | static struct channel *verifyChannel(struct tty_struct *tty) |
ae0b78d0 AD |
387 | { |
388 | /* | |
389 | * This routine basically provides a sanity check. It insures that the | |
390 | * channel returned is within the proper range of addresses as well as | |
391 | * properly initialized. If some bogus info gets passed in | |
392 | * through tty->driver_data this should catch it. | |
393 | */ | |
f2cf8e25 | 394 | if (tty) { |
c9f19e96 | 395 | struct channel *ch = tty->driver_data; |
191260a0 | 396 | if (ch >= &digi_channels[0] && ch < &digi_channels[nbdevs]) { |
1da177e4 LT |
397 | if (ch->magic == EPCA_MAGIC) |
398 | return ch; | |
399 | } | |
f2cf8e25 | 400 | } |
1da177e4 | 401 | return NULL; |
ae0b78d0 | 402 | } |
1da177e4 | 403 | |
f2cf8e25 AC |
404 | static void pc_sched_event(struct channel *ch, int event) |
405 | { | |
ae0b78d0 AD |
406 | /* |
407 | * We call this to schedule interrupt processing on some event. The | |
408 | * kernel sees our request and calls the related routine in OUR driver. | |
409 | */ | |
1da177e4 LT |
410 | ch->event |= 1 << event; |
411 | schedule_work(&ch->tqueue); | |
ae0b78d0 | 412 | } |
1da177e4 LT |
413 | |
414 | static void epca_error(int line, char *msg) | |
f2cf8e25 | 415 | { |
191260a0 | 416 | printk(KERN_ERR "epca_error (Digi): line = %d %s\n", line, msg); |
f2cf8e25 | 417 | } |
1da177e4 | 418 | |
ae0b78d0 | 419 | static void pc_close(struct tty_struct *tty, struct file *filp) |
f2cf8e25 | 420 | { |
1da177e4 | 421 | struct channel *ch; |
d1c815e5 | 422 | struct tty_port *port; |
ae0b78d0 AD |
423 | /* |
424 | * verifyChannel returns the channel from the tty struct if it is | |
425 | * valid. This serves as a sanity check. | |
426 | */ | |
191260a0 | 427 | ch = verifyChannel(tty); |
d1c815e5 AC |
428 | if (ch == NULL) |
429 | return; | |
430 | port = &ch->port; | |
1da177e4 | 431 | |
6ed1dbae | 432 | if (tty_port_close_start(port, tty, filp) == 0) |
d1c815e5 | 433 | return; |
1da177e4 | 434 | |
d1c815e5 | 435 | pc_flush_buffer(tty); |
d1c815e5 AC |
436 | shutdown(ch, tty); |
437 | ||
6ed1dbae AC |
438 | tty_port_close_end(port, tty); |
439 | ch->event = 0; /* FIXME: review ch->event locking */ | |
3969ffba | 440 | tty_port_tty_set(port, NULL); |
ae0b78d0 | 441 | } |
1da177e4 | 442 | |
d1c815e5 | 443 | static void shutdown(struct channel *ch, struct tty_struct *tty) |
ae0b78d0 | 444 | { |
1da177e4 | 445 | unsigned long flags; |
bc9a5154 | 446 | struct board_chan __iomem *bc; |
d1c815e5 | 447 | struct tty_port *port = &ch->port; |
1da177e4 | 448 | |
d1c815e5 | 449 | if (!(port->flags & ASYNC_INITIALIZED)) |
1da177e4 LT |
450 | return; |
451 | ||
f2cf8e25 | 452 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 453 | |
f2cf8e25 | 454 | globalwinon(ch); |
1da177e4 LT |
455 | bc = ch->brdchan; |
456 | ||
ae0b78d0 AD |
457 | /* |
458 | * In order for an event to be generated on the receipt of data the | |
459 | * idata flag must be set. Since we are shutting down, this is not | |
460 | * necessary clear this flag. | |
461 | */ | |
1da177e4 | 462 | if (bc) |
f2cf8e25 | 463 | writeb(0, &bc->idata); |
1da177e4 | 464 | |
ae0b78d0 | 465 | /* If we're a modem control device and HUPCL is on, drop RTS & DTR. */ |
f2cf8e25 | 466 | if (tty->termios->c_cflag & HUPCL) { |
1da177e4 LT |
467 | ch->omodem &= ~(ch->m_rts | ch->m_dtr); |
468 | fepcmd(ch, SETMODEM, 0, ch->m_dtr | ch->m_rts, 10, 1); | |
469 | } | |
1da177e4 LT |
470 | memoff(ch); |
471 | ||
ae0b78d0 AD |
472 | /* |
473 | * The channel has officialy been closed. The next time it is opened it | |
474 | * will have to reinitialized. Set a flag to indicate this. | |
475 | */ | |
1da177e4 | 476 | /* Prevent future Digi programmed interrupts from coming active */ |
d1c815e5 | 477 | port->flags &= ~ASYNC_INITIALIZED; |
f2cf8e25 | 478 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 | 479 | } |
1da177e4 LT |
480 | |
481 | static void pc_hangup(struct tty_struct *tty) | |
ae0b78d0 | 482 | { |
1da177e4 | 483 | struct channel *ch; |
d1c815e5 | 484 | |
ae0b78d0 AD |
485 | /* |
486 | * verifyChannel returns the channel from the tty struct if it is | |
487 | * valid. This serves as a sanity check. | |
488 | */ | |
191260a0 AC |
489 | ch = verifyChannel(tty); |
490 | if (ch != NULL) { | |
978e595f | 491 | pc_flush_buffer(tty); |
1da177e4 | 492 | tty_ldisc_flush(tty); |
d1c815e5 AC |
493 | shutdown(ch, tty); |
494 | ||
d1c815e5 | 495 | ch->event = 0; /* FIXME: review locking of ch->event */ |
6ed1dbae | 496 | tty_port_hangup(&ch->port); |
ae0b78d0 AD |
497 | } |
498 | } | |
1da177e4 | 499 | |
ae0b78d0 | 500 | static int pc_write(struct tty_struct *tty, |
191260a0 | 501 | const unsigned char *buf, int bytesAvailable) |
ae0b78d0 | 502 | { |
f2cf8e25 AC |
503 | unsigned int head, tail; |
504 | int dataLen; | |
505 | int size; | |
506 | int amountCopied; | |
1da177e4 LT |
507 | struct channel *ch; |
508 | unsigned long flags; | |
509 | int remain; | |
bc9a5154 | 510 | struct board_chan __iomem *bc; |
1da177e4 | 511 | |
ae0b78d0 AD |
512 | /* |
513 | * pc_write is primarily called directly by the kernel routine | |
514 | * tty_write (Though it can also be called by put_char) found in | |
515 | * tty_io.c. pc_write is passed a line discipline buffer where the data | |
516 | * to be written out is stored. The line discipline implementation | |
517 | * itself is done at the kernel level and is not brought into the | |
518 | * driver. | |
519 | */ | |
1da177e4 | 520 | |
ae0b78d0 AD |
521 | /* |
522 | * verifyChannel returns the channel from the tty struct if it is | |
523 | * valid. This serves as a sanity check. | |
524 | */ | |
191260a0 AC |
525 | ch = verifyChannel(tty); |
526 | if (ch == NULL) | |
1da177e4 LT |
527 | return 0; |
528 | ||
529 | /* Make a pointer to the channel data structure found on the board. */ | |
1da177e4 LT |
530 | bc = ch->brdchan; |
531 | size = ch->txbufsize; | |
1da177e4 | 532 | amountCopied = 0; |
1da177e4 | 533 | |
f2cf8e25 | 534 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
535 | globalwinon(ch); |
536 | ||
f2cf8e25 AC |
537 | head = readw(&bc->tin) & (size - 1); |
538 | tail = readw(&bc->tout); | |
1da177e4 | 539 | |
f2cf8e25 AC |
540 | if (tail != readw(&bc->tout)) |
541 | tail = readw(&bc->tout); | |
1da177e4 LT |
542 | tail &= (size - 1); |
543 | ||
ae0b78d0 AD |
544 | if (head >= tail) { |
545 | /* head has not wrapped */ | |
546 | /* | |
547 | * remain (much like dataLen above) represents the total amount | |
548 | * of space available on the card for data. Here dataLen | |
549 | * represents the space existing between the head pointer and | |
550 | * the end of buffer. This is important because a memcpy cannot | |
551 | * be told to automatically wrap around when it hits the buffer | |
552 | * end. | |
553 | */ | |
1da177e4 LT |
554 | dataLen = size - head; |
555 | remain = size - (head - tail) - 1; | |
ae0b78d0 AD |
556 | } else { |
557 | /* head has wrapped around */ | |
1da177e4 LT |
558 | remain = tail - head - 1; |
559 | dataLen = remain; | |
ae0b78d0 AD |
560 | } |
561 | /* | |
562 | * Check the space on the card. If we have more data than space; reduce | |
563 | * the amount of data to fit the space. | |
564 | */ | |
1da177e4 | 565 | bytesAvailable = min(remain, bytesAvailable); |
1da177e4 | 566 | txwinon(ch); |
ae0b78d0 AD |
567 | while (bytesAvailable > 0) { |
568 | /* there is data to copy onto card */ | |
1da177e4 | 569 | |
ae0b78d0 AD |
570 | /* |
571 | * If head is not wrapped, the below will make sure the first | |
572 | * data copy fills to the end of card buffer. | |
573 | */ | |
1da177e4 | 574 | dataLen = min(bytesAvailable, dataLen); |
bc9a5154 | 575 | memcpy_toio(ch->txptr + head, buf, dataLen); |
1da177e4 LT |
576 | buf += dataLen; |
577 | head += dataLen; | |
578 | amountCopied += dataLen; | |
579 | bytesAvailable -= dataLen; | |
580 | ||
f2cf8e25 | 581 | if (head >= size) { |
1da177e4 LT |
582 | head = 0; |
583 | dataLen = tail; | |
584 | } | |
ae0b78d0 | 585 | } |
1da177e4 LT |
586 | ch->statusflags |= TXBUSY; |
587 | globalwinon(ch); | |
f2cf8e25 | 588 | writew(head, &bc->tin); |
1da177e4 | 589 | |
f2cf8e25 | 590 | if ((ch->statusflags & LOWWAIT) == 0) { |
1da177e4 | 591 | ch->statusflags |= LOWWAIT; |
f2cf8e25 | 592 | writeb(1, &bc->ilow); |
1da177e4 LT |
593 | } |
594 | memoff(ch); | |
f2cf8e25 | 595 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
596 | return amountCopied; |
597 | } | |
1da177e4 | 598 | |
1da177e4 | 599 | static int pc_write_room(struct tty_struct *tty) |
ae0b78d0 | 600 | { |
191260a0 | 601 | int remain = 0; |
1da177e4 LT |
602 | struct channel *ch; |
603 | unsigned long flags; | |
604 | unsigned int head, tail; | |
bc9a5154 | 605 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
606 | /* |
607 | * verifyChannel returns the channel from the tty struct if it is | |
608 | * valid. This serves as a sanity check. | |
609 | */ | |
191260a0 AC |
610 | ch = verifyChannel(tty); |
611 | if (ch != NULL) { | |
f2cf8e25 | 612 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
613 | globalwinon(ch); |
614 | ||
615 | bc = ch->brdchan; | |
f2cf8e25 AC |
616 | head = readw(&bc->tin) & (ch->txbufsize - 1); |
617 | tail = readw(&bc->tout); | |
1da177e4 | 618 | |
f2cf8e25 AC |
619 | if (tail != readw(&bc->tout)) |
620 | tail = readw(&bc->tout); | |
1da177e4 LT |
621 | /* Wrap tail if necessary */ |
622 | tail &= (ch->txbufsize - 1); | |
191260a0 AC |
623 | remain = tail - head - 1; |
624 | if (remain < 0) | |
1da177e4 LT |
625 | remain += ch->txbufsize; |
626 | ||
f2cf8e25 | 627 | if (remain && (ch->statusflags & LOWWAIT) == 0) { |
1da177e4 | 628 | ch->statusflags |= LOWWAIT; |
f2cf8e25 | 629 | writeb(1, &bc->ilow); |
1da177e4 LT |
630 | } |
631 | memoff(ch); | |
f2cf8e25 | 632 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 633 | } |
1da177e4 LT |
634 | /* Return how much room is left on card */ |
635 | return remain; | |
ae0b78d0 | 636 | } |
1da177e4 LT |
637 | |
638 | static int pc_chars_in_buffer(struct tty_struct *tty) | |
ae0b78d0 | 639 | { |
1da177e4 LT |
640 | int chars; |
641 | unsigned int ctail, head, tail; | |
642 | int remain; | |
643 | unsigned long flags; | |
644 | struct channel *ch; | |
bc9a5154 | 645 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
646 | /* |
647 | * verifyChannel returns the channel from the tty struct if it is | |
648 | * valid. This serves as a sanity check. | |
649 | */ | |
191260a0 AC |
650 | ch = verifyChannel(tty); |
651 | if (ch == NULL) | |
ae0b78d0 | 652 | return 0; |
1da177e4 | 653 | |
f2cf8e25 | 654 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
655 | globalwinon(ch); |
656 | ||
657 | bc = ch->brdchan; | |
f2cf8e25 AC |
658 | tail = readw(&bc->tout); |
659 | head = readw(&bc->tin); | |
660 | ctail = readw(&ch->mailbox->cout); | |
1da177e4 | 661 | |
191260a0 AC |
662 | if (tail == head && readw(&ch->mailbox->cin) == ctail && |
663 | readb(&bc->tbusy) == 0) | |
1da177e4 | 664 | chars = 0; |
f2cf8e25 AC |
665 | else { /* Begin if some space on the card has been used */ |
666 | head = readw(&bc->tin) & (ch->txbufsize - 1); | |
1da177e4 | 667 | tail &= (ch->txbufsize - 1); |
ae0b78d0 AD |
668 | /* |
669 | * The logic here is basically opposite of the above | |
670 | * pc_write_room here we are finding the amount of bytes in the | |
671 | * buffer filled. Not the amount of bytes empty. | |
672 | */ | |
191260a0 AC |
673 | remain = tail - head - 1; |
674 | if (remain < 0) | |
1da177e4 | 675 | remain += ch->txbufsize; |
1da177e4 | 676 | chars = (int)(ch->txbufsize - remain); |
ae0b78d0 AD |
677 | /* |
678 | * Make it possible to wakeup anything waiting for output in | |
679 | * tty_ioctl.c, etc. | |
680 | * | |
681 | * If not already set. Setup an event to indicate when the | |
682 | * transmit buffer empties. | |
683 | */ | |
1da177e4 | 684 | if (!(ch->statusflags & EMPTYWAIT)) |
191260a0 | 685 | setup_empty_event(tty, ch); |
1da177e4 | 686 | } /* End if some space on the card has been used */ |
1da177e4 | 687 | memoff(ch); |
f2cf8e25 | 688 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 689 | /* Return number of characters residing on card. */ |
ae0b78d0 AD |
690 | return chars; |
691 | } | |
1da177e4 LT |
692 | |
693 | static void pc_flush_buffer(struct tty_struct *tty) | |
ae0b78d0 | 694 | { |
1da177e4 LT |
695 | unsigned int tail; |
696 | unsigned long flags; | |
697 | struct channel *ch; | |
bc9a5154 | 698 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
699 | /* |
700 | * verifyChannel returns the channel from the tty struct if it is | |
701 | * valid. This serves as a sanity check. | |
702 | */ | |
191260a0 AC |
703 | ch = verifyChannel(tty); |
704 | if (ch == NULL) | |
1da177e4 LT |
705 | return; |
706 | ||
f2cf8e25 | 707 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 708 | globalwinon(ch); |
1da177e4 | 709 | bc = ch->brdchan; |
f2cf8e25 | 710 | tail = readw(&bc->tout); |
1da177e4 | 711 | /* Have FEP move tout pointer; effectively flushing transmit buffer */ |
1da177e4 | 712 | fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0); |
1da177e4 | 713 | memoff(ch); |
f2cf8e25 | 714 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 715 | tty_wakeup(tty); |
ae0b78d0 | 716 | } |
1da177e4 LT |
717 | |
718 | static void pc_flush_chars(struct tty_struct *tty) | |
ae0b78d0 AD |
719 | { |
720 | struct channel *ch; | |
721 | /* | |
722 | * verifyChannel returns the channel from the tty struct if it is | |
723 | * valid. This serves as a sanity check. | |
724 | */ | |
191260a0 AC |
725 | ch = verifyChannel(tty); |
726 | if (ch != NULL) { | |
1da177e4 | 727 | unsigned long flags; |
f2cf8e25 | 728 | spin_lock_irqsave(&epca_lock, flags); |
ae0b78d0 AD |
729 | /* |
730 | * If not already set and the transmitter is busy setup an | |
731 | * event to indicate when the transmit empties. | |
732 | */ | |
191260a0 AC |
733 | if ((ch->statusflags & TXBUSY) && |
734 | !(ch->statusflags & EMPTYWAIT)) | |
735 | setup_empty_event(tty, ch); | |
f2cf8e25 | 736 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 737 | } |
ae0b78d0 | 738 | } |
1da177e4 | 739 | |
6ed1dbae | 740 | static int epca_carrier_raised(struct tty_port *port) |
ae0b78d0 | 741 | { |
6ed1dbae AC |
742 | struct channel *ch = container_of(port, struct channel, port); |
743 | if (ch->imodem & ch->dcd) | |
744 | return 1; | |
1da177e4 | 745 | return 0; |
ae0b78d0 | 746 | } |
1da177e4 | 747 | |
c1314a49 | 748 | static void epca_raise_dtr_rts(struct tty_port *port) |
6ed1dbae AC |
749 | { |
750 | } | |
751 | ||
191260a0 | 752 | static int pc_open(struct tty_struct *tty, struct file *filp) |
ae0b78d0 | 753 | { |
1da177e4 | 754 | struct channel *ch; |
d1c815e5 | 755 | struct tty_port *port; |
1da177e4 LT |
756 | unsigned long flags; |
757 | int line, retval, boardnum; | |
bc9a5154 | 758 | struct board_chan __iomem *bc; |
f2cf8e25 | 759 | unsigned int head; |
1da177e4 LT |
760 | |
761 | line = tty->index; | |
f2cf8e25 AC |
762 | if (line < 0 || line >= nbdevs) |
763 | return -ENODEV; | |
1da177e4 LT |
764 | |
765 | ch = &digi_channels[line]; | |
d1c815e5 | 766 | port = &ch->port; |
1da177e4 LT |
767 | boardnum = ch->boardnum; |
768 | ||
769 | /* Check status of board configured in system. */ | |
770 | ||
ae0b78d0 | 771 | /* |
0211a9c8 | 772 | * I check to see if the epca_setup routine detected a user error. It |
ae0b78d0 AD |
773 | * might be better to put this in pc_init, but for the moment it goes |
774 | * here. | |
775 | */ | |
f2cf8e25 | 776 | if (invalid_lilo_config) { |
1da177e4 | 777 | if (setup_error_code & INVALID_BOARD_TYPE) |
f2cf8e25 | 778 | printk(KERN_ERR "epca: pc_open: Invalid board type specified in kernel options.\n"); |
1da177e4 | 779 | if (setup_error_code & INVALID_NUM_PORTS) |
f2cf8e25 | 780 | printk(KERN_ERR "epca: pc_open: Invalid number of ports specified in kernel options.\n"); |
1da177e4 | 781 | if (setup_error_code & INVALID_MEM_BASE) |
f2cf8e25 | 782 | printk(KERN_ERR "epca: pc_open: Invalid board memory address specified in kernel options.\n"); |
1da177e4 | 783 | if (setup_error_code & INVALID_PORT_BASE) |
f2cf8e25 | 784 | printk(KERN_ERR "epca; pc_open: Invalid board port address specified in kernel options.\n"); |
1da177e4 | 785 | if (setup_error_code & INVALID_BOARD_STATUS) |
f2cf8e25 | 786 | printk(KERN_ERR "epca: pc_open: Invalid board status specified in kernel options.\n"); |
1da177e4 | 787 | if (setup_error_code & INVALID_ALTPIN) |
f2cf8e25 | 788 | printk(KERN_ERR "epca: pc_open: Invalid board altpin specified in kernel options;\n"); |
1da177e4 | 789 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
f2cf8e25 | 790 | return -ENODEV; |
1da177e4 | 791 | } |
f2cf8e25 | 792 | if (boardnum >= num_cards || boards[boardnum].status == DISABLED) { |
1da177e4 LT |
793 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
794 | return(-ENODEV); | |
795 | } | |
ae0b78d0 | 796 | |
11fb09bf HH |
797 | bc = ch->brdchan; |
798 | if (bc == NULL) { | |
1da177e4 | 799 | tty->driver_data = NULL; |
f2cf8e25 | 800 | return -ENODEV; |
1da177e4 LT |
801 | } |
802 | ||
d1c815e5 | 803 | spin_lock_irqsave(&port->lock, flags); |
ae0b78d0 AD |
804 | /* |
805 | * Every time a channel is opened, increment a counter. This is | |
806 | * necessary because we do not wish to flush and shutdown the channel | |
807 | * until the last app holding the channel open, closes it. | |
808 | */ | |
d1c815e5 | 809 | port->count++; |
ae0b78d0 AD |
810 | /* |
811 | * Set a kernel structures pointer to our local channel structure. This | |
812 | * way we can get to it when passed only a tty struct. | |
813 | */ | |
1da177e4 | 814 | tty->driver_data = ch; |
d1c815e5 | 815 | port->tty = tty; |
ae0b78d0 AD |
816 | /* |
817 | * If this is the first time the channel has been opened, initialize | |
818 | * the tty->termios struct otherwise let pc_close handle it. | |
819 | */ | |
d1c815e5 | 820 | spin_lock(&epca_lock); |
1da177e4 LT |
821 | globalwinon(ch); |
822 | ch->statusflags = 0; | |
823 | ||
824 | /* Save boards current modem status */ | |
bc9a5154 | 825 | ch->imodem = readb(&bc->mstat); |
1da177e4 | 826 | |
ae0b78d0 AD |
827 | /* |
828 | * Set receive head and tail ptrs to each other. This indicates no data | |
829 | * available to read. | |
830 | */ | |
f2cf8e25 AC |
831 | head = readw(&bc->rin); |
832 | writew(head, &bc->rout); | |
1da177e4 LT |
833 | |
834 | /* Set the channels associated tty structure */ | |
1da177e4 | 835 | |
ae0b78d0 AD |
836 | /* |
837 | * The below routine generally sets up parity, baud, flow control | |
838 | * issues, etc.... It effect both control flags and input flags. | |
839 | */ | |
191260a0 | 840 | epcaparam(tty, ch); |
1da177e4 | 841 | memoff(ch); |
d1c815e5 AC |
842 | spin_unlock(&epca_lock); |
843 | port->flags |= ASYNC_INITIALIZED; | |
844 | spin_unlock_irqrestore(&port->lock, flags); | |
1da177e4 | 845 | |
6ed1dbae | 846 | retval = tty_port_block_til_ready(port, tty, filp); |
1da177e4 | 847 | if (retval) |
1da177e4 | 848 | return retval; |
ae0b78d0 AD |
849 | /* |
850 | * Set this again in case a hangup set it to zero while this open() was | |
851 | * waiting for the line... | |
852 | */ | |
d1c815e5 AC |
853 | spin_lock_irqsave(&port->lock, flags); |
854 | port->tty = tty; | |
855 | spin_lock(&epca_lock); | |
1da177e4 | 856 | globalwinon(ch); |
1da177e4 | 857 | /* Enable Digi Data events */ |
f2cf8e25 | 858 | writeb(1, &bc->idata); |
1da177e4 | 859 | memoff(ch); |
d1c815e5 AC |
860 | spin_unlock(&epca_lock); |
861 | spin_unlock_irqrestore(&port->lock, flags); | |
1da177e4 | 862 | return 0; |
ae0b78d0 | 863 | } |
1da177e4 | 864 | |
1da177e4 | 865 | static int __init epca_module_init(void) |
ae0b78d0 | 866 | { |
f2cf8e25 | 867 | return pc_init(); |
1da177e4 | 868 | } |
1da177e4 | 869 | module_init(epca_module_init); |
1da177e4 | 870 | |
1da177e4 | 871 | static struct pci_driver epca_driver; |
1da177e4 LT |
872 | |
873 | static void __exit epca_module_exit(void) | |
874 | { | |
1da177e4 LT |
875 | int count, crd; |
876 | struct board_info *bd; | |
877 | struct channel *ch; | |
1da177e4 LT |
878 | |
879 | del_timer_sync(&epca_timer); | |
880 | ||
191260a0 AC |
881 | if (tty_unregister_driver(pc_driver) || |
882 | tty_unregister_driver(pc_info)) { | |
f2cf8e25 | 883 | printk(KERN_WARNING "epca: cleanup_module failed to un-register tty driver\n"); |
1da177e4 LT |
884 | return; |
885 | } | |
886 | put_tty_driver(pc_driver); | |
887 | put_tty_driver(pc_info); | |
888 | ||
ae0b78d0 | 889 | for (crd = 0; crd < num_cards; crd++) { |
1da177e4 | 890 | bd = &boards[crd]; |
ae0b78d0 | 891 | if (!bd) { /* sanity check */ |
1da177e4 LT |
892 | printk(KERN_ERR "<Error> - Digi : cleanup_module failed\n"); |
893 | return; | |
ae0b78d0 | 894 | } |
f2cf8e25 | 895 | ch = card_ptr[crd]; |
ae0b78d0 | 896 | for (count = 0; count < bd->numports; count++, ch++) { |
3969ffba AC |
897 | struct tty_struct *tty = tty_port_tty_get(&ch->port); |
898 | if (tty) { | |
899 | tty_hangup(tty); | |
900 | tty_kref_put(tty); | |
901 | } | |
ae0b78d0 AD |
902 | } |
903 | } | |
904 | pci_unregister_driver(&epca_driver); | |
1da177e4 LT |
905 | } |
906 | module_exit(epca_module_exit); | |
1da177e4 | 907 | |
b68e31d0 | 908 | static const struct tty_operations pc_ops = { |
1da177e4 LT |
909 | .open = pc_open, |
910 | .close = pc_close, | |
911 | .write = pc_write, | |
912 | .write_room = pc_write_room, | |
913 | .flush_buffer = pc_flush_buffer, | |
914 | .chars_in_buffer = pc_chars_in_buffer, | |
915 | .flush_chars = pc_flush_chars, | |
1da177e4 LT |
916 | .ioctl = pc_ioctl, |
917 | .set_termios = pc_set_termios, | |
918 | .stop = pc_stop, | |
919 | .start = pc_start, | |
920 | .throttle = pc_throttle, | |
921 | .unthrottle = pc_unthrottle, | |
922 | .hangup = pc_hangup, | |
dcbf1280 | 923 | .break_ctl = pc_send_break |
1da177e4 LT |
924 | }; |
925 | ||
6ed1dbae AC |
926 | static const struct tty_port_operations epca_port_ops = { |
927 | .carrier_raised = epca_carrier_raised, | |
928 | .raise_dtr_rts = epca_raise_dtr_rts, | |
929 | }; | |
930 | ||
191260a0 | 931 | static int info_open(struct tty_struct *tty, struct file *filp) |
1da177e4 LT |
932 | { |
933 | return 0; | |
934 | } | |
935 | ||
936 | static struct tty_operations info_ops = { | |
937 | .open = info_open, | |
938 | .ioctl = info_ioctl, | |
939 | }; | |
940 | ||
f2cf8e25 | 941 | static int __init pc_init(void) |
ae0b78d0 | 942 | { |
1da177e4 LT |
943 | int crd; |
944 | struct board_info *bd; | |
945 | unsigned char board_id = 0; | |
dabad056 | 946 | int err = -ENOMEM; |
1da177e4 | 947 | |
1da177e4 LT |
948 | int pci_boards_found, pci_count; |
949 | ||
950 | pci_count = 0; | |
1da177e4 LT |
951 | |
952 | pc_driver = alloc_tty_driver(MAX_ALLOC); | |
953 | if (!pc_driver) | |
dabad056 | 954 | goto out1; |
1da177e4 LT |
955 | |
956 | pc_info = alloc_tty_driver(MAX_ALLOC); | |
dabad056 AM |
957 | if (!pc_info) |
958 | goto out2; | |
1da177e4 | 959 | |
ae0b78d0 AD |
960 | /* |
961 | * If epca_setup has not been ran by LILO set num_cards to defaults; | |
962 | * copy board structure defined by digiConfig into drivers board | |
963 | * structure. Note : If LILO has ran epca_setup then epca_setup will | |
964 | * handle defining num_cards as well as copying the data into the board | |
965 | * structure. | |
966 | */ | |
967 | if (!liloconfig) { | |
968 | /* driver has been configured via. epcaconfig */ | |
1da177e4 LT |
969 | nbdevs = NBDEVS; |
970 | num_cards = NUMCARDS; | |
ae0b78d0 AD |
971 | memcpy(&boards, &static_boards, |
972 | sizeof(struct board_info) * NUMCARDS); | |
973 | } | |
1da177e4 | 974 | |
ae0b78d0 AD |
975 | /* |
976 | * Note : If lilo was used to configure the driver and the ignore | |
977 | * epcaconfig option was choosen (digiepca=2) then nbdevs and num_cards | |
978 | * will equal 0 at this point. This is okay; PCI cards will still be | |
979 | * picked up if detected. | |
980 | */ | |
1da177e4 | 981 | |
ae0b78d0 AD |
982 | /* |
983 | * Set up interrupt, we will worry about memory allocation in | |
984 | * post_fep_init. | |
985 | */ | |
191260a0 | 986 | printk(KERN_INFO "DIGI epca driver version %s loaded.\n", VERSION); |
1da177e4 | 987 | |
ae0b78d0 AD |
988 | /* |
989 | * NOTE : This code assumes that the number of ports found in the | |
990 | * boards array is correct. This could be wrong if the card in question | |
991 | * is PCI (And therefore has no ports entry in the boards structure.) | |
992 | * The rest of the information will be valid for PCI because the | |
993 | * beginning of pc_init scans for PCI and determines i/o and base | |
994 | * memory addresses. I am not sure if it is possible to read the number | |
995 | * of ports supported by the card prior to it being booted (Since that | |
996 | * is the state it is in when pc_init is run). Because it is not | |
997 | * possible to query the number of supported ports until after the card | |
998 | * has booted; we are required to calculate the card_ptrs as the card | |
999 | * is initialized (Inside post_fep_init). The negative thing about this | |
1000 | * approach is that digiDload's call to GET_INFO will have a bad port | |
1001 | * value. (Since this is called prior to post_fep_init.) | |
1002 | */ | |
1da177e4 | 1003 | pci_boards_found = 0; |
ae0b78d0 | 1004 | if (num_cards < MAXBOARDS) |
1da177e4 LT |
1005 | pci_boards_found += init_PCI(); |
1006 | num_cards += pci_boards_found; | |
1007 | ||
1da177e4 | 1008 | pc_driver->owner = THIS_MODULE; |
ae0b78d0 AD |
1009 | pc_driver->name = "ttyD"; |
1010 | pc_driver->major = DIGI_MAJOR; | |
1da177e4 LT |
1011 | pc_driver->minor_start = 0; |
1012 | pc_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
1013 | pc_driver->subtype = SERIAL_TYPE_NORMAL; | |
1014 | pc_driver->init_termios = tty_std_termios; | |
1015 | pc_driver->init_termios.c_iflag = 0; | |
1016 | pc_driver->init_termios.c_oflag = 0; | |
1017 | pc_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; | |
1018 | pc_driver->init_termios.c_lflag = 0; | |
606d099c AC |
1019 | pc_driver->init_termios.c_ispeed = 9600; |
1020 | pc_driver->init_termios.c_ospeed = 9600; | |
dcbf1280 | 1021 | pc_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; |
1da177e4 LT |
1022 | tty_set_operations(pc_driver, &pc_ops); |
1023 | ||
1024 | pc_info->owner = THIS_MODULE; | |
1025 | pc_info->name = "digi_ctl"; | |
1026 | pc_info->major = DIGIINFOMAJOR; | |
1027 | pc_info->minor_start = 0; | |
1028 | pc_info->type = TTY_DRIVER_TYPE_SERIAL; | |
1029 | pc_info->subtype = SERIAL_TYPE_INFO; | |
1030 | pc_info->init_termios = tty_std_termios; | |
1031 | pc_info->init_termios.c_iflag = 0; | |
1032 | pc_info->init_termios.c_oflag = 0; | |
1033 | pc_info->init_termios.c_lflag = 0; | |
1034 | pc_info->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; | |
606d099c AC |
1035 | pc_info->init_termios.c_ispeed = 9600; |
1036 | pc_info->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
1037 | pc_info->flags = TTY_DRIVER_REAL_RAW; |
1038 | tty_set_operations(pc_info, &info_ops); | |
1039 | ||
1040 | ||
ae0b78d0 AD |
1041 | for (crd = 0; crd < num_cards; crd++) { |
1042 | /* | |
1043 | * This is where the appropriate memory handlers for the | |
1044 | * hardware is set. Everything at runtime blindly jumps through | |
1045 | * these vectors. | |
1046 | */ | |
1da177e4 LT |
1047 | |
1048 | /* defined in epcaconfig.h */ | |
1049 | bd = &boards[crd]; | |
1050 | ||
ae0b78d0 AD |
1051 | switch (bd->type) { |
1052 | case PCXEM: | |
1053 | case EISAXEM: | |
1054 | bd->memwinon = pcxem_memwinon; | |
1055 | bd->memwinoff = pcxem_memwinoff; | |
1056 | bd->globalwinon = pcxem_globalwinon; | |
1057 | bd->txwinon = pcxem_txwinon; | |
1058 | bd->rxwinon = pcxem_rxwinon; | |
1059 | bd->memoff = pcxem_memoff; | |
1060 | bd->assertgwinon = dummy_assertgwinon; | |
1061 | bd->assertmemoff = dummy_assertmemoff; | |
1da177e4 LT |
1062 | break; |
1063 | ||
ae0b78d0 AD |
1064 | case PCIXEM: |
1065 | case PCIXRJ: | |
1066 | case PCIXR: | |
1067 | bd->memwinon = dummy_memwinon; | |
1068 | bd->memwinoff = dummy_memwinoff; | |
1069 | bd->globalwinon = dummy_globalwinon; | |
1070 | bd->txwinon = dummy_txwinon; | |
1071 | bd->rxwinon = dummy_rxwinon; | |
1072 | bd->memoff = dummy_memoff; | |
1073 | bd->assertgwinon = dummy_assertgwinon; | |
1074 | bd->assertmemoff = dummy_assertmemoff; | |
1075 | break; | |
1da177e4 | 1076 | |
ae0b78d0 AD |
1077 | case PCXE: |
1078 | case PCXEVE: | |
1079 | bd->memwinon = pcxe_memwinon; | |
1080 | bd->memwinoff = pcxe_memwinoff; | |
1081 | bd->globalwinon = pcxe_globalwinon; | |
1082 | bd->txwinon = pcxe_txwinon; | |
1083 | bd->rxwinon = pcxe_rxwinon; | |
1084 | bd->memoff = pcxe_memoff; | |
1085 | bd->assertgwinon = dummy_assertgwinon; | |
1086 | bd->assertmemoff = dummy_assertmemoff; | |
1087 | break; | |
1da177e4 | 1088 | |
ae0b78d0 AD |
1089 | case PCXI: |
1090 | case PC64XE: | |
1091 | bd->memwinon = pcxi_memwinon; | |
1092 | bd->memwinoff = pcxi_memwinoff; | |
1093 | bd->globalwinon = pcxi_globalwinon; | |
1094 | bd->txwinon = pcxi_txwinon; | |
1095 | bd->rxwinon = pcxi_rxwinon; | |
1096 | bd->memoff = pcxi_memoff; | |
1097 | bd->assertgwinon = pcxi_assertgwinon; | |
1098 | bd->assertmemoff = pcxi_assertmemoff; | |
1099 | break; | |
1da177e4 | 1100 | |
ae0b78d0 | 1101 | default: |
1da177e4 | 1102 | break; |
ae0b78d0 | 1103 | } |
1da177e4 | 1104 | |
ae0b78d0 AD |
1105 | /* |
1106 | * Some cards need a memory segment to be defined for use in | |
1107 | * transmit and receive windowing operations. These boards are | |
1108 | * listed in the below switch. In the case of the XI the amount | |
1109 | * of memory on the board is variable so the memory_seg is also | |
1110 | * variable. This code determines what they segment should be. | |
1111 | */ | |
1112 | switch (bd->type) { | |
1113 | case PCXE: | |
1114 | case PCXEVE: | |
1115 | case PC64XE: | |
1116 | bd->memory_seg = 0xf000; | |
1117 | break; | |
1da177e4 | 1118 | |
ae0b78d0 AD |
1119 | case PCXI: |
1120 | board_id = inb((int)bd->port); | |
1121 | if ((board_id & 0x1) == 0x1) { | |
1122 | /* it's an XI card */ | |
1123 | /* Is it a 64K board */ | |
1124 | if ((board_id & 0x30) == 0) | |
1125 | bd->memory_seg = 0xf000; | |
1126 | ||
1127 | /* Is it a 128K board */ | |
1128 | if ((board_id & 0x30) == 0x10) | |
1129 | bd->memory_seg = 0xe000; | |
1130 | ||
1131 | /* Is is a 256K board */ | |
1132 | if ((board_id & 0x30) == 0x20) | |
1133 | bd->memory_seg = 0xc000; | |
1134 | ||
1135 | /* Is it a 512K board */ | |
1136 | if ((board_id & 0x30) == 0x30) | |
1137 | bd->memory_seg = 0x8000; | |
1138 | } else | |
191260a0 | 1139 | printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n", (int)bd->port); |
ae0b78d0 AD |
1140 | break; |
1141 | } | |
1142 | } | |
1da177e4 | 1143 | |
dabad056 AM |
1144 | err = tty_register_driver(pc_driver); |
1145 | if (err) { | |
1146 | printk(KERN_ERR "Couldn't register Digi PC/ driver"); | |
1147 | goto out3; | |
1148 | } | |
1da177e4 | 1149 | |
dabad056 AM |
1150 | err = tty_register_driver(pc_info); |
1151 | if (err) { | |
1152 | printk(KERN_ERR "Couldn't register Digi PC/ info "); | |
1153 | goto out4; | |
1154 | } | |
1da177e4 | 1155 | |
ae0b78d0 | 1156 | /* Start up the poller to check for events on all enabled boards */ |
1da177e4 LT |
1157 | init_timer(&epca_timer); |
1158 | epca_timer.function = epcapoll; | |
1159 | mod_timer(&epca_timer, jiffies + HZ/25); | |
1da177e4 LT |
1160 | return 0; |
1161 | ||
dabad056 AM |
1162 | out4: |
1163 | tty_unregister_driver(pc_driver); | |
1164 | out3: | |
1165 | put_tty_driver(pc_info); | |
1166 | out2: | |
1167 | put_tty_driver(pc_driver); | |
1168 | out1: | |
1169 | return err; | |
ae0b78d0 | 1170 | } |
1da177e4 LT |
1171 | |
1172 | static void post_fep_init(unsigned int crd) | |
ae0b78d0 | 1173 | { |
1da177e4 | 1174 | int i; |
bc9a5154 AV |
1175 | void __iomem *memaddr; |
1176 | struct global_data __iomem *gd; | |
1da177e4 | 1177 | struct board_info *bd; |
bc9a5154 | 1178 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
1179 | struct channel *ch; |
1180 | int shrinkmem = 0, lowwater; | |
1da177e4 | 1181 | |
ae0b78d0 AD |
1182 | /* |
1183 | * This call is made by the user via. the ioctl call DIGI_INIT. It is | |
1184 | * responsible for setting up all the card specific stuff. | |
1185 | */ | |
1186 | bd = &boards[crd]; | |
1da177e4 | 1187 | |
ae0b78d0 AD |
1188 | /* |
1189 | * If this is a PCI board, get the port info. Remember PCI cards do not | |
1190 | * have entries into the epcaconfig.h file, so we can't get the number | |
1191 | * of ports from it. Unfortunetly, this means that anyone doing a | |
1192 | * DIGI_GETINFO before the board has booted will get an invalid number | |
1193 | * of ports returned (It should return 0). Calls to DIGI_GETINFO after | |
1194 | * DIGI_INIT has been called will return the proper values. | |
1195 | */ | |
f2cf8e25 | 1196 | if (bd->type >= PCIXEM) { /* Begin get PCI number of ports */ |
ae0b78d0 AD |
1197 | /* |
1198 | * Below we use XEMPORTS as a memory offset regardless of which | |
1199 | * PCI card it is. This is because all of the supported PCI | |
1200 | * cards have the same memory offset for the channel data. This | |
1201 | * will have to be changed if we ever develop a PCI/XE card. | |
1202 | * NOTE : The FEP manual states that the port offset is 0xC22 | |
1203 | * as opposed to 0xC02. This is only true for PC/XE, and PC/XI | |
1204 | * cards; not for the XEM, or CX series. On the PCI cards the | |
1205 | * number of ports is determined by reading a ID PROM located | |
1206 | * in the box attached to the card. The card can then determine | |
1207 | * the index the id to determine the number of ports available. | |
1208 | * (FYI - The id should be located at 0x1ac (And may use up to | |
1209 | * 4 bytes if the box in question is a XEM or CX)). | |
1210 | */ | |
f2cf8e25 AC |
1211 | /* PCI cards are already remapped at this point ISA are not */ |
1212 | bd->numports = readw(bd->re_map_membase + XEMPORTS); | |
191260a0 | 1213 | epcaassert(bd->numports <= 64, "PCI returned a invalid number of ports"); |
1da177e4 | 1214 | nbdevs += (bd->numports); |
f2cf8e25 AC |
1215 | } else { |
1216 | /* Fix up the mappings for ISA/EISA etc */ | |
1217 | /* FIXME: 64K - can we be smarter ? */ | |
191260a0 | 1218 | bd->re_map_membase = ioremap_nocache(bd->membase, 0x10000); |
f2cf8e25 | 1219 | } |
1da177e4 LT |
1220 | |
1221 | if (crd != 0) | |
1222 | card_ptr[crd] = card_ptr[crd-1] + boards[crd-1].numports; | |
1223 | else | |
1224 | card_ptr[crd] = &digi_channels[crd]; /* <- For card 0 only */ | |
1225 | ||
1226 | ch = card_ptr[crd]; | |
1da177e4 LT |
1227 | epcaassert(ch <= &digi_channels[nbdevs - 1], "ch out of range"); |
1228 | ||
f2cf8e25 | 1229 | memaddr = bd->re_map_membase; |
1da177e4 | 1230 | |
ae0b78d0 AD |
1231 | /* |
1232 | * The below assignment will set bc to point at the BEGINING of the | |
1233 | * cards channel structures. For 1 card there will be between 8 and 64 | |
1234 | * of these structures. | |
1235 | */ | |
bc9a5154 | 1236 | bc = memaddr + CHANSTRUCT; |
1da177e4 | 1237 | |
ae0b78d0 AD |
1238 | /* |
1239 | * The below assignment will set gd to point at the BEGINING of global | |
1240 | * memory address 0xc00. The first data in that global memory actually | |
1241 | * starts at address 0xc1a. The command in pointer begins at 0xd10. | |
1242 | */ | |
bc9a5154 | 1243 | gd = memaddr + GLOBAL; |
1da177e4 | 1244 | |
ae0b78d0 AD |
1245 | /* |
1246 | * XEPORTS (address 0xc22) points at the number of channels the card | |
1247 | * supports. (For 64XE, XI, XEM, and XR use 0xc02) | |
1248 | */ | |
191260a0 AC |
1249 | if ((bd->type == PCXEVE || bd->type == PCXE) && |
1250 | (readw(memaddr + XEPORTS) < 3)) | |
1da177e4 LT |
1251 | shrinkmem = 1; |
1252 | if (bd->type < PCIXEM) | |
1253 | if (!request_region((int)bd->port, 4, board_desc[bd->type])) | |
ae0b78d0 | 1254 | return; |
1da177e4 LT |
1255 | memwinon(bd, 0); |
1256 | ||
ae0b78d0 AD |
1257 | /* |
1258 | * Remember ch is the main drivers channels structure, while bc is the | |
1259 | * cards channel structure. | |
1260 | */ | |
1261 | for (i = 0; i < bd->numports; i++, ch++, bc++) { | |
f2cf8e25 | 1262 | unsigned long flags; |
bc9a5154 | 1263 | u16 tseg, rseg; |
1da177e4 | 1264 | |
9ae7b08a | 1265 | tty_port_init(&ch->port); |
c1314a49 | 1266 | ch->port.ops = &epca_port_ops; |
ae0b78d0 AD |
1267 | ch->brdchan = bc; |
1268 | ch->mailbox = gd; | |
c4028958 | 1269 | INIT_WORK(&ch->tqueue, do_softint); |
ae0b78d0 | 1270 | ch->board = &boards[crd]; |
1da177e4 | 1271 | |
f2cf8e25 AC |
1272 | spin_lock_irqsave(&epca_lock, flags); |
1273 | switch (bd->type) { | |
ae0b78d0 AD |
1274 | /* |
1275 | * Since some of the boards use different bitmaps for | |
1276 | * their control signals we cannot hard code these | |
1277 | * values and retain portability. We virtualize this | |
1278 | * data here. | |
1279 | */ | |
1280 | case EISAXEM: | |
1281 | case PCXEM: | |
1282 | case PCIXEM: | |
1283 | case PCIXRJ: | |
1284 | case PCIXR: | |
1285 | ch->m_rts = 0x02; | |
1286 | ch->m_dcd = 0x80; | |
1287 | ch->m_dsr = 0x20; | |
1288 | ch->m_cts = 0x10; | |
1289 | ch->m_ri = 0x40; | |
1290 | ch->m_dtr = 0x01; | |
1291 | break; | |
1292 | ||
1293 | case PCXE: | |
1294 | case PCXEVE: | |
1295 | case PCXI: | |
1296 | case PC64XE: | |
1297 | ch->m_rts = 0x02; | |
1298 | ch->m_dcd = 0x08; | |
1299 | ch->m_dsr = 0x10; | |
1300 | ch->m_cts = 0x20; | |
1301 | ch->m_ri = 0x40; | |
1302 | ch->m_dtr = 0x80; | |
1303 | break; | |
1304 | } | |
1da177e4 | 1305 | |
f2cf8e25 | 1306 | if (boards[crd].altpin) { |
1da177e4 LT |
1307 | ch->dsr = ch->m_dcd; |
1308 | ch->dcd = ch->m_dsr; | |
1309 | ch->digiext.digi_flags |= DIGI_ALTPIN; | |
ae0b78d0 | 1310 | } else { |
1da177e4 LT |
1311 | ch->dcd = ch->m_dcd; |
1312 | ch->dsr = ch->m_dsr; | |
1313 | } | |
ae0b78d0 | 1314 | |
1da177e4 LT |
1315 | ch->boardnum = crd; |
1316 | ch->channelnum = i; | |
1317 | ch->magic = EPCA_MAGIC; | |
3969ffba | 1318 | tty_port_tty_set(&ch->port, NULL); |
1da177e4 | 1319 | |
f2cf8e25 | 1320 | if (shrinkmem) { |
1da177e4 LT |
1321 | fepcmd(ch, SETBUFFER, 32, 0, 0, 0); |
1322 | shrinkmem = 0; | |
1323 | } | |
1324 | ||
bc9a5154 AV |
1325 | tseg = readw(&bc->tseg); |
1326 | rseg = readw(&bc->rseg); | |
1327 | ||
f2cf8e25 | 1328 | switch (bd->type) { |
ae0b78d0 AD |
1329 | case PCIXEM: |
1330 | case PCIXRJ: | |
1331 | case PCIXR: | |
1332 | /* Cover all the 2MEG cards */ | |
1333 | ch->txptr = memaddr + ((tseg << 4) & 0x1fffff); | |
1334 | ch->rxptr = memaddr + ((rseg << 4) & 0x1fffff); | |
1335 | ch->txwin = FEPWIN | (tseg >> 11); | |
1336 | ch->rxwin = FEPWIN | (rseg >> 11); | |
1337 | break; | |
1338 | ||
1339 | case PCXEM: | |
1340 | case EISAXEM: | |
1341 | /* Cover all the 32K windowed cards */ | |
1342 | /* Mask equal to window size - 1 */ | |
1343 | ch->txptr = memaddr + ((tseg << 4) & 0x7fff); | |
1344 | ch->rxptr = memaddr + ((rseg << 4) & 0x7fff); | |
1345 | ch->txwin = FEPWIN | (tseg >> 11); | |
1346 | ch->rxwin = FEPWIN | (rseg >> 11); | |
1347 | break; | |
1da177e4 | 1348 | |
ae0b78d0 AD |
1349 | case PCXEVE: |
1350 | case PCXE: | |
191260a0 AC |
1351 | ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) |
1352 | & 0x1fff); | |
ae0b78d0 | 1353 | ch->txwin = FEPWIN | ((tseg - bd->memory_seg) >> 9); |
191260a0 AC |
1354 | ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) |
1355 | & 0x1fff); | |
1356 | ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >> 9); | |
ae0b78d0 AD |
1357 | break; |
1358 | ||
1359 | case PCXI: | |
1360 | case PC64XE: | |
1361 | ch->txptr = memaddr + ((tseg - bd->memory_seg) << 4); | |
1362 | ch->rxptr = memaddr + ((rseg - bd->memory_seg) << 4); | |
1363 | ch->txwin = ch->rxwin = 0; | |
1364 | break; | |
1365 | } | |
1da177e4 LT |
1366 | |
1367 | ch->txbufhead = 0; | |
bc9a5154 | 1368 | ch->txbufsize = readw(&bc->tmax) + 1; |
ae0b78d0 | 1369 | |
1da177e4 | 1370 | ch->rxbufhead = 0; |
bc9a5154 | 1371 | ch->rxbufsize = readw(&bc->rmax) + 1; |
ae0b78d0 | 1372 | |
1da177e4 LT |
1373 | lowwater = ch->txbufsize >= 2000 ? 1024 : (ch->txbufsize / 2); |
1374 | ||
1375 | /* Set transmitter low water mark */ | |
1376 | fepcmd(ch, STXLWATER, lowwater, 0, 10, 0); | |
1377 | ||
1378 | /* Set receiver low water mark */ | |
1da177e4 LT |
1379 | fepcmd(ch, SRXLWATER, (ch->rxbufsize / 4), 0, 10, 0); |
1380 | ||
1381 | /* Set receiver high water mark */ | |
1da177e4 LT |
1382 | fepcmd(ch, SRXHWATER, (3 * ch->rxbufsize / 4), 0, 10, 0); |
1383 | ||
f2cf8e25 AC |
1384 | writew(100, &bc->edelay); |
1385 | writeb(1, &bc->idata); | |
ae0b78d0 | 1386 | |
f2cf8e25 AC |
1387 | ch->startc = readb(&bc->startc); |
1388 | ch->stopc = readb(&bc->stopc); | |
1389 | ch->startca = readb(&bc->startca); | |
1390 | ch->stopca = readb(&bc->stopca); | |
ae0b78d0 | 1391 | |
1da177e4 LT |
1392 | ch->fepcflag = 0; |
1393 | ch->fepiflag = 0; | |
1394 | ch->fepoflag = 0; | |
1395 | ch->fepstartc = 0; | |
1396 | ch->fepstopc = 0; | |
1397 | ch->fepstartca = 0; | |
1398 | ch->fepstopca = 0; | |
ae0b78d0 | 1399 | |
6ed1dbae | 1400 | ch->port.close_delay = 50; |
f2cf8e25 AC |
1401 | |
1402 | spin_unlock_irqrestore(&epca_lock, flags); | |
ae0b78d0 | 1403 | } |
1da177e4 | 1404 | |
ae0b78d0 | 1405 | printk(KERN_INFO |
191260a0 AC |
1406 | "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", |
1407 | VERSION, board_desc[bd->type], (long)bd->port, | |
1408 | (long)bd->membase, bd->numports); | |
1da177e4 | 1409 | memwinoff(bd, 0); |
ae0b78d0 | 1410 | } |
1da177e4 LT |
1411 | |
1412 | static void epcapoll(unsigned long ignored) | |
ae0b78d0 | 1413 | { |
1da177e4 LT |
1414 | unsigned long flags; |
1415 | int crd; | |
191260a0 | 1416 | unsigned int head, tail; |
1da177e4 LT |
1417 | struct channel *ch; |
1418 | struct board_info *bd; | |
1419 | ||
ae0b78d0 AD |
1420 | /* |
1421 | * This routine is called upon every timer interrupt. Even though the | |
1422 | * Digi series cards are capable of generating interrupts this method | |
1423 | * of non-looping polling is more efficient. This routine checks for | |
1424 | * card generated events (Such as receive data, are transmit buffer | |
1425 | * empty) and acts on those events. | |
1426 | */ | |
1427 | for (crd = 0; crd < num_cards; crd++) { | |
1da177e4 LT |
1428 | bd = &boards[crd]; |
1429 | ch = card_ptr[crd]; | |
1430 | ||
1431 | if ((bd->status == DISABLED) || digi_poller_inhibited) | |
ae0b78d0 | 1432 | continue; |
1da177e4 | 1433 | |
ae0b78d0 AD |
1434 | /* |
1435 | * assertmemoff is not needed here; indeed it is an empty | |
1436 | * subroutine. It is being kept because future boards may need | |
1437 | * this as well as some legacy boards. | |
1438 | */ | |
f2cf8e25 AC |
1439 | spin_lock_irqsave(&epca_lock, flags); |
1440 | ||
1da177e4 LT |
1441 | assertmemoff(ch); |
1442 | ||
1443 | globalwinon(ch); | |
1444 | ||
ae0b78d0 AD |
1445 | /* |
1446 | * In this case head and tail actually refer to the event queue | |
1447 | * not the transmit or receive queue. | |
1448 | */ | |
f2cf8e25 AC |
1449 | head = readw(&ch->mailbox->ein); |
1450 | tail = readw(&ch->mailbox->eout); | |
1da177e4 | 1451 | |
ae0b78d0 | 1452 | /* If head isn't equal to tail we have an event */ |
1da177e4 LT |
1453 | if (head != tail) |
1454 | doevent(crd); | |
1da177e4 LT |
1455 | memoff(ch); |
1456 | ||
f2cf8e25 | 1457 | spin_unlock_irqrestore(&epca_lock, flags); |
f2cf8e25 | 1458 | } /* End for each card */ |
1da177e4 | 1459 | mod_timer(&epca_timer, jiffies + (HZ / 25)); |
ae0b78d0 | 1460 | } |
1da177e4 LT |
1461 | |
1462 | static void doevent(int crd) | |
ae0b78d0 | 1463 | { |
bc9a5154 | 1464 | void __iomem *eventbuf; |
1da177e4 LT |
1465 | struct channel *ch, *chan0; |
1466 | static struct tty_struct *tty; | |
f2cf8e25 | 1467 | struct board_info *bd; |
bc9a5154 | 1468 | struct board_chan __iomem *bc; |
f2cf8e25 AC |
1469 | unsigned int tail, head; |
1470 | int event, channel; | |
1471 | int mstat, lstat; | |
1da177e4 | 1472 | |
ae0b78d0 AD |
1473 | /* |
1474 | * This subroutine is called by epcapoll when an event is detected | |
1475 | * in the event queue. This routine responds to those events. | |
1476 | */ | |
1da177e4 LT |
1477 | bd = &boards[crd]; |
1478 | ||
1479 | chan0 = card_ptr[crd]; | |
1480 | epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range"); | |
1da177e4 | 1481 | assertgwinon(chan0); |
191260a0 AC |
1482 | while ((tail = readw(&chan0->mailbox->eout)) != |
1483 | (head = readw(&chan0->mailbox->ein))) { | |
1484 | /* Begin while something in event queue */ | |
1da177e4 | 1485 | assertgwinon(chan0); |
f2cf8e25 | 1486 | eventbuf = bd->re_map_membase + tail + ISTART; |
1da177e4 | 1487 | /* Get the channel the event occurred on */ |
f2cf8e25 | 1488 | channel = readb(eventbuf); |
1da177e4 | 1489 | /* Get the actual event code that occurred */ |
f2cf8e25 | 1490 | event = readb(eventbuf + 1); |
ae0b78d0 AD |
1491 | /* |
1492 | * The two assignments below get the current modem status | |
1493 | * (mstat) and the previous modem status (lstat). These are | |
1494 | * useful becuase an event could signal a change in modem | |
1495 | * signals itself. | |
1496 | */ | |
f2cf8e25 AC |
1497 | mstat = readb(eventbuf + 2); |
1498 | lstat = readb(eventbuf + 3); | |
1da177e4 LT |
1499 | |
1500 | ch = chan0 + channel; | |
f2cf8e25 | 1501 | if ((unsigned)channel >= bd->numports || !ch) { |
1da177e4 LT |
1502 | if (channel >= bd->numports) |
1503 | ch = chan0; | |
1504 | bc = ch->brdchan; | |
1505 | goto next; | |
1506 | } | |
1507 | ||
191260a0 AC |
1508 | bc = ch->brdchan; |
1509 | if (bc == NULL) | |
1da177e4 LT |
1510 | goto next; |
1511 | ||
3969ffba | 1512 | tty = tty_port_tty_get(&ch->port); |
f2cf8e25 | 1513 | if (event & DATA_IND) { /* Begin DATA_IND */ |
3969ffba | 1514 | receive_data(ch, tty); |
1da177e4 | 1515 | assertgwinon(ch); |
1da177e4 LT |
1516 | } /* End DATA_IND */ |
1517 | /* else *//* Fix for DCD transition missed bug */ | |
ae0b78d0 | 1518 | if (event & MODEMCHG_IND) { |
1da177e4 | 1519 | /* A modem signal change has been indicated */ |
1da177e4 | 1520 | ch->imodem = mstat; |
6ed1dbae | 1521 | if (test_bit(ASYNC_CHECK_CD, &ch->port.flags)) { |
191260a0 AC |
1522 | /* We are now receiving dcd */ |
1523 | if (mstat & ch->dcd) | |
52d41738 | 1524 | wake_up_interruptible(&ch->port.open_wait); |
191260a0 AC |
1525 | else /* No dcd; hangup */ |
1526 | pc_sched_event(ch, EPCA_EVENT_HANGUP); | |
1da177e4 | 1527 | } |
ae0b78d0 | 1528 | } |
ae0b78d0 AD |
1529 | if (tty) { |
1530 | if (event & BREAK_IND) { | |
1da177e4 | 1531 | /* A break has been indicated */ |
33f0f88f | 1532 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
ae0b78d0 AD |
1533 | tty_schedule_flip(tty); |
1534 | } else if (event & LOWTX_IND) { | |
1535 | if (ch->statusflags & LOWWAIT) { | |
1da177e4 LT |
1536 | ch->statusflags &= ~LOWWAIT; |
1537 | tty_wakeup(tty); | |
ae0b78d0 AD |
1538 | } |
1539 | } else if (event & EMPTYTX_IND) { | |
191260a0 AC |
1540 | /* This event is generated by |
1541 | setup_empty_event */ | |
1da177e4 | 1542 | ch->statusflags &= ~TXBUSY; |
ae0b78d0 | 1543 | if (ch->statusflags & EMPTYWAIT) { |
1da177e4 LT |
1544 | ch->statusflags &= ~EMPTYWAIT; |
1545 | tty_wakeup(tty); | |
ae0b78d0 AD |
1546 | } |
1547 | } | |
3969ffba | 1548 | tty_kref_put(tty); |
ae0b78d0 | 1549 | } |
191260a0 | 1550 | next: |
1da177e4 | 1551 | globalwinon(ch); |
f2cf8e25 AC |
1552 | BUG_ON(!bc); |
1553 | writew(1, &bc->idata); | |
1554 | writew((tail + 4) & (IMAX - ISTART - 4), &chan0->mailbox->eout); | |
1da177e4 | 1555 | globalwinon(chan0); |
1da177e4 | 1556 | } /* End while something in event queue */ |
ae0b78d0 | 1557 | } |
1da177e4 LT |
1558 | |
1559 | static void fepcmd(struct channel *ch, int cmd, int word_or_byte, | |
191260a0 | 1560 | int byte2, int ncmds, int bytecmd) |
ae0b78d0 | 1561 | { |
bc9a5154 | 1562 | unchar __iomem *memaddr; |
1da177e4 LT |
1563 | unsigned int head, cmdTail, cmdStart, cmdMax; |
1564 | long count; | |
1565 | int n; | |
1566 | ||
1567 | /* This is the routine in which commands may be passed to the card. */ | |
1568 | ||
1569 | if (ch->board->status == DISABLED) | |
1da177e4 | 1570 | return; |
1da177e4 | 1571 | assertgwinon(ch); |
1da177e4 | 1572 | /* Remember head (As well as max) is just an offset not a base addr */ |
f2cf8e25 | 1573 | head = readw(&ch->mailbox->cin); |
1da177e4 | 1574 | /* cmdStart is a base address */ |
f2cf8e25 | 1575 | cmdStart = readw(&ch->mailbox->cstart); |
ae0b78d0 AD |
1576 | /* |
1577 | * We do the addition below because we do not want a max pointer | |
1578 | * relative to cmdStart. We want a max pointer that points at the | |
1579 | * physical end of the command queue. | |
1580 | */ | |
f2cf8e25 | 1581 | cmdMax = (cmdStart + 4 + readw(&ch->mailbox->cmax)); |
1da177e4 LT |
1582 | memaddr = ch->board->re_map_membase; |
1583 | ||
f2cf8e25 | 1584 | if (head >= (cmdMax - cmdStart) || (head & 03)) { |
191260a0 AC |
1585 | printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", |
1586 | __LINE__, cmd, head); | |
1587 | printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", | |
1588 | __LINE__, cmdMax, cmdStart); | |
1da177e4 LT |
1589 | return; |
1590 | } | |
f2cf8e25 AC |
1591 | if (bytecmd) { |
1592 | writeb(cmd, memaddr + head + cmdStart + 0); | |
1593 | writeb(ch->channelnum, memaddr + head + cmdStart + 1); | |
1da177e4 | 1594 | /* Below word_or_byte is bits to set */ |
f2cf8e25 | 1595 | writeb(word_or_byte, memaddr + head + cmdStart + 2); |
1da177e4 | 1596 | /* Below byte2 is bits to reset */ |
f2cf8e25 AC |
1597 | writeb(byte2, memaddr + head + cmdStart + 3); |
1598 | } else { | |
1599 | writeb(cmd, memaddr + head + cmdStart + 0); | |
1600 | writeb(ch->channelnum, memaddr + head + cmdStart + 1); | |
1601 | writeb(word_or_byte, memaddr + head + cmdStart + 2); | |
1da177e4 | 1602 | } |
1da177e4 | 1603 | head = (head + 4) & (cmdMax - cmdStart - 4); |
f2cf8e25 | 1604 | writew(head, &ch->mailbox->cin); |
1da177e4 LT |
1605 | count = FEPTIMEOUT; |
1606 | ||
ae0b78d0 | 1607 | for (;;) { |
1da177e4 | 1608 | count--; |
f2cf8e25 | 1609 | if (count == 0) { |
1da177e4 LT |
1610 | printk(KERN_ERR "<Error> - Fep not responding in fepcmd()\n"); |
1611 | return; | |
1612 | } | |
f2cf8e25 AC |
1613 | head = readw(&ch->mailbox->cin); |
1614 | cmdTail = readw(&ch->mailbox->cout); | |
1da177e4 | 1615 | n = (head - cmdTail) & (cmdMax - cmdStart - 4); |
ae0b78d0 AD |
1616 | /* |
1617 | * Basically this will break when the FEP acknowledges the | |
1618 | * command by incrementing cmdTail (Making it equal to head). | |
1619 | */ | |
1da177e4 | 1620 | if (n <= ncmds * (sizeof(short) * 4)) |
ae0b78d0 AD |
1621 | break; |
1622 | } | |
1623 | } | |
1da177e4 | 1624 | |
ae0b78d0 AD |
1625 | /* |
1626 | * Digi products use fields in their channels structures that are very similar | |
1627 | * to the c_cflag and c_iflag fields typically found in UNIX termios | |
1628 | * structures. The below three routines allow mappings between these hardware | |
1629 | * "flags" and their respective Linux flags. | |
1630 | */ | |
1da177e4 | 1631 | static unsigned termios2digi_h(struct channel *ch, unsigned cflag) |
ae0b78d0 | 1632 | { |
1da177e4 LT |
1633 | unsigned res = 0; |
1634 | ||
f2cf8e25 | 1635 | if (cflag & CRTSCTS) { |
1da177e4 LT |
1636 | ch->digiext.digi_flags |= (RTSPACE | CTSPACE); |
1637 | res |= ((ch->m_cts) | (ch->m_rts)); | |
1638 | } | |
1639 | ||
1640 | if (ch->digiext.digi_flags & RTSPACE) | |
1641 | res |= ch->m_rts; | |
1642 | ||
1643 | if (ch->digiext.digi_flags & DTRPACE) | |
1644 | res |= ch->m_dtr; | |
1645 | ||
1646 | if (ch->digiext.digi_flags & CTSPACE) | |
1647 | res |= ch->m_cts; | |
1648 | ||
1649 | if (ch->digiext.digi_flags & DSRPACE) | |
1650 | res |= ch->dsr; | |
1651 | ||
1652 | if (ch->digiext.digi_flags & DCDPACE) | |
1653 | res |= ch->dcd; | |
1654 | ||
1655 | if (res & (ch->m_rts)) | |
1656 | ch->digiext.digi_flags |= RTSPACE; | |
1657 | ||
1658 | if (res & (ch->m_cts)) | |
1659 | ch->digiext.digi_flags |= CTSPACE; | |
1660 | ||
1661 | return res; | |
ae0b78d0 | 1662 | } |
1da177e4 | 1663 | |
1da177e4 | 1664 | static unsigned termios2digi_i(struct channel *ch, unsigned iflag) |
ae0b78d0 AD |
1665 | { |
1666 | unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | | |
191260a0 | 1667 | INPCK | ISTRIP | IXON | IXANY | IXOFF); |
1da177e4 LT |
1668 | if (ch->digiext.digi_flags & DIGI_AIXON) |
1669 | res |= IAIXON; | |
1670 | return res; | |
ae0b78d0 | 1671 | } |
1da177e4 LT |
1672 | |
1673 | static unsigned termios2digi_c(struct channel *ch, unsigned cflag) | |
ae0b78d0 | 1674 | { |
1da177e4 | 1675 | unsigned res = 0; |
ae0b78d0 | 1676 | if (cflag & CBAUDEX) { |
1da177e4 | 1677 | ch->digiext.digi_flags |= DIGI_FAST; |
ae0b78d0 AD |
1678 | /* |
1679 | * HUPCL bit is used by FEP to indicate fast baud table is to | |
1680 | * be used. | |
1681 | */ | |
1da177e4 | 1682 | res |= FEP_HUPCL; |
ae0b78d0 AD |
1683 | } else |
1684 | ch->digiext.digi_flags &= ~DIGI_FAST; | |
1685 | /* | |
1686 | * CBAUD has bit position 0x1000 set these days to indicate Linux | |
1687 | * baud rate remap. Digi hardware can't handle the bit assignment. | |
1688 | * (We use a different bit assignment for high speed.). Clear this | |
1689 | * bit out. | |
1690 | */ | |
1da177e4 | 1691 | res |= cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE); |
ae0b78d0 AD |
1692 | /* |
1693 | * This gets a little confusing. The Digi cards have their own | |
8dfba4d7 | 1694 | * representation of c_cflags controlling baud rate. For the most part |
ae0b78d0 AD |
1695 | * this is identical to the Linux implementation. However; Digi |
1696 | * supports one rate (76800) that Linux doesn't. This means that the | |
1697 | * c_cflag entry that would normally mean 76800 for Digi actually means | |
1698 | * 115200 under Linux. Without the below mapping, a stty 115200 would | |
1699 | * only drive the board at 76800. Since the rate 230400 is also found | |
1700 | * after 76800, the same problem afflicts us when we choose a rate of | |
1701 | * 230400. Without the below modificiation stty 230400 would actually | |
1702 | * give us 115200. | |
1703 | * | |
1704 | * There are two additional differences. The Linux value for CLOCAL | |
1705 | * (0x800; 0004000) has no meaning to the Digi hardware. Also in later | |
1706 | * releases of Linux; the CBAUD define has CBAUDEX (0x1000; 0010000) | |
1707 | * ored into it (CBAUD = 0x100f as opposed to 0xf). CBAUDEX should be | |
1708 | * checked for a screened out prior to termios2digi_c returning. Since | |
1709 | * CLOCAL isn't used by the board this can be ignored as long as the | |
1710 | * returned value is used only by Digi hardware. | |
1711 | */ | |
f2cf8e25 | 1712 | if (cflag & CBAUDEX) { |
ae0b78d0 AD |
1713 | /* |
1714 | * The below code is trying to guarantee that only baud rates | |
1715 | * 115200 and 230400 are remapped. We use exclusive or because | |
1716 | * the various baud rates share common bit positions and | |
1717 | * therefore can't be tested for easily. | |
1718 | */ | |
1719 | if ((!((cflag & 0x7) ^ (B115200 & ~CBAUDEX))) || | |
1da177e4 | 1720 | (!((cflag & 0x7) ^ (B230400 & ~CBAUDEX)))) |
1da177e4 | 1721 | res += 1; |
1da177e4 | 1722 | } |
1da177e4 | 1723 | return res; |
ae0b78d0 | 1724 | } |
1da177e4 | 1725 | |
f2cf8e25 | 1726 | /* Caller must hold the locks */ |
1da177e4 | 1727 | static void epcaparam(struct tty_struct *tty, struct channel *ch) |
ae0b78d0 | 1728 | { |
1da177e4 | 1729 | unsigned int cmdHead; |
606d099c | 1730 | struct ktermios *ts; |
bc9a5154 | 1731 | struct board_chan __iomem *bc; |
1da177e4 LT |
1732 | unsigned mval, hflow, cflag, iflag; |
1733 | ||
1734 | bc = ch->brdchan; | |
11fb09bf | 1735 | epcaassert(bc != NULL, "bc out of range"); |
1da177e4 LT |
1736 | |
1737 | assertgwinon(ch); | |
1da177e4 | 1738 | ts = tty->termios; |
f2cf8e25 AC |
1739 | if ((ts->c_cflag & CBAUD) == 0) { /* Begin CBAUD detected */ |
1740 | cmdHead = readw(&bc->rin); | |
bc9a5154 | 1741 | writew(cmdHead, &bc->rout); |
f2cf8e25 | 1742 | cmdHead = readw(&bc->tin); |
1da177e4 | 1743 | /* Changing baud in mid-stream transmission can be wonderful */ |
ae0b78d0 AD |
1744 | /* |
1745 | * Flush current transmit buffer by setting cmdTail pointer | |
1746 | * (tout) to cmdHead pointer (tin). Hopefully the transmit | |
1747 | * buffer is empty. | |
1748 | */ | |
1da177e4 LT |
1749 | fepcmd(ch, STOUT, (unsigned) cmdHead, 0, 0, 0); |
1750 | mval = 0; | |
ae0b78d0 AD |
1751 | } else { /* Begin CBAUD not detected */ |
1752 | /* | |
1753 | * c_cflags have changed but that change had nothing to do with | |
1754 | * BAUD. Propagate the change to the card. | |
1755 | */ | |
1da177e4 | 1756 | cflag = termios2digi_c(ch, ts->c_cflag); |
f2cf8e25 | 1757 | if (cflag != ch->fepcflag) { |
1da177e4 LT |
1758 | ch->fepcflag = cflag; |
1759 | /* Set baud rate, char size, stop bits, parity */ | |
1760 | fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0); | |
1761 | } | |
ae0b78d0 AD |
1762 | /* |
1763 | * If the user has not forced CLOCAL and if the device is not a | |
1764 | * CALLOUT device (Which is always CLOCAL) we set flags such | |
1765 | * that the driver will wait on carrier detect. | |
1766 | */ | |
1da177e4 | 1767 | if (ts->c_cflag & CLOCAL) |
6ed1dbae | 1768 | clear_bit(ASYNC_CHECK_CD, &ch->port.flags); |
1da177e4 | 1769 | else |
6ed1dbae | 1770 | set_bit(ASYNC_CHECK_CD, &ch->port.flags); |
1da177e4 | 1771 | mval = ch->m_dtr | ch->m_rts; |
1da177e4 | 1772 | } /* End CBAUD not detected */ |
1da177e4 | 1773 | iflag = termios2digi_i(ch, ts->c_iflag); |
1da177e4 | 1774 | /* Check input mode flags */ |
f2cf8e25 | 1775 | if (iflag != ch->fepiflag) { |
1da177e4 | 1776 | ch->fepiflag = iflag; |
ae0b78d0 AD |
1777 | /* |
1778 | * Command sets channels iflag structure on the board. Such | |
1779 | * things as input soft flow control, handling of parity | |
1780 | * errors, and break handling are all set here. | |
191260a0 AC |
1781 | * |
1782 | * break handling, parity handling, input stripping, | |
1783 | * flow control chars | |
ae0b78d0 | 1784 | */ |
1da177e4 LT |
1785 | fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); |
1786 | } | |
ae0b78d0 AD |
1787 | /* |
1788 | * Set the board mint value for this channel. This will cause hardware | |
1789 | * events to be generated each time the DCD signal (Described in mint) | |
1790 | * changes. | |
1791 | */ | |
f2cf8e25 | 1792 | writeb(ch->dcd, &bc->mint); |
1da177e4 LT |
1793 | if ((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD)) |
1794 | if (ch->digiext.digi_flags & DIGI_FORCEDCD) | |
f2cf8e25 AC |
1795 | writeb(0, &bc->mint); |
1796 | ch->imodem = readb(&bc->mstat); | |
1da177e4 | 1797 | hflow = termios2digi_h(ch, ts->c_cflag); |
f2cf8e25 | 1798 | if (hflow != ch->hflow) { |
1da177e4 | 1799 | ch->hflow = hflow; |
ae0b78d0 AD |
1800 | /* |
1801 | * Hard flow control has been selected but the board is not | |
1802 | * using it. Activate hard flow control now. | |
1803 | */ | |
1da177e4 LT |
1804 | fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1); |
1805 | } | |
1da177e4 LT |
1806 | mval ^= ch->modemfake & (mval ^ ch->modem); |
1807 | ||
f2cf8e25 | 1808 | if (ch->omodem ^ mval) { |
1da177e4 | 1809 | ch->omodem = mval; |
ae0b78d0 AD |
1810 | /* |
1811 | * The below command sets the DTR and RTS mstat structure. If | |
1812 | * hard flow control is NOT active these changes will drive the | |
1813 | * output of the actual DTR and RTS lines. If hard flow control | |
1814 | * is active, the changes will be saved in the mstat structure | |
1815 | * and only asserted when hard flow control is turned off. | |
1816 | */ | |
1da177e4 LT |
1817 | |
1818 | /* First reset DTR & RTS; then set them */ | |
1819 | fepcmd(ch, SETMODEM, 0, ((ch->m_dtr)|(ch->m_rts)), 0, 1); | |
1820 | fepcmd(ch, SETMODEM, mval, 0, 0, 1); | |
1da177e4 | 1821 | } |
f2cf8e25 | 1822 | if (ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) { |
1da177e4 LT |
1823 | ch->fepstartc = ch->startc; |
1824 | ch->fepstopc = ch->stopc; | |
ae0b78d0 AD |
1825 | /* |
1826 | * The XON / XOFF characters have changed; propagate these | |
1827 | * changes to the card. | |
1828 | */ | |
1da177e4 LT |
1829 | fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); |
1830 | } | |
f2cf8e25 | 1831 | if (ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) { |
1da177e4 LT |
1832 | ch->fepstartca = ch->startca; |
1833 | ch->fepstopca = ch->stopca; | |
ae0b78d0 AD |
1834 | /* |
1835 | * Similar to the above, this time the auxilarly XON / XOFF | |
1836 | * characters have changed; propagate these changes to the card. | |
1837 | */ | |
1da177e4 LT |
1838 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); |
1839 | } | |
ae0b78d0 | 1840 | } |
1da177e4 | 1841 | |
f2cf8e25 | 1842 | /* Caller holds lock */ |
3969ffba | 1843 | static void receive_data(struct channel *ch, struct tty_struct *tty) |
ae0b78d0 | 1844 | { |
1da177e4 | 1845 | unchar *rptr; |
606d099c | 1846 | struct ktermios *ts = NULL; |
bc9a5154 | 1847 | struct board_chan __iomem *bc; |
f2cf8e25 AC |
1848 | int dataToRead, wrapgap, bytesAvailable; |
1849 | unsigned int tail, head; | |
1da177e4 | 1850 | unsigned int wrapmask; |
1da177e4 | 1851 | |
ae0b78d0 AD |
1852 | /* |
1853 | * This routine is called by doint when a receive data event has taken | |
1854 | * place. | |
1855 | */ | |
1da177e4 | 1856 | globalwinon(ch); |
1da177e4 LT |
1857 | if (ch->statusflags & RXSTOPPED) |
1858 | return; | |
1da177e4 LT |
1859 | if (tty) |
1860 | ts = tty->termios; | |
1da177e4 | 1861 | bc = ch->brdchan; |
f2cf8e25 | 1862 | BUG_ON(!bc); |
1da177e4 LT |
1863 | wrapmask = ch->rxbufsize - 1; |
1864 | ||
ae0b78d0 AD |
1865 | /* |
1866 | * Get the head and tail pointers to the receiver queue. Wrap the head | |
1867 | * pointer if it has reached the end of the buffer. | |
1868 | */ | |
f2cf8e25 | 1869 | head = readw(&bc->rin); |
1da177e4 | 1870 | head &= wrapmask; |
f2cf8e25 | 1871 | tail = readw(&bc->rout) & wrapmask; |
1da177e4 LT |
1872 | |
1873 | bytesAvailable = (head - tail) & wrapmask; | |
1da177e4 LT |
1874 | if (bytesAvailable == 0) |
1875 | return; | |
1876 | ||
ae0b78d0 | 1877 | /* If CREAD bit is off or device not open, set TX tail to head */ |
191260a0 | 1878 | if (!tty || !ts || !(ts->c_cflag & CREAD)) { |
bc9a5154 | 1879 | writew(head, &bc->rout); |
1da177e4 LT |
1880 | return; |
1881 | } | |
1882 | ||
33f0f88f | 1883 | if (tty_buffer_request_room(tty, bytesAvailable + 1) == 0) |
1da177e4 LT |
1884 | return; |
1885 | ||
f2cf8e25 AC |
1886 | if (readb(&bc->orun)) { |
1887 | writeb(0, &bc->orun); | |
191260a0 AC |
1888 | printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n", |
1889 | tty->name); | |
33f0f88f | 1890 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); |
1da177e4 | 1891 | } |
1da177e4 | 1892 | rxwinon(ch); |
191260a0 AC |
1893 | while (bytesAvailable > 0) { |
1894 | /* Begin while there is data on the card */ | |
1da177e4 | 1895 | wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; |
ae0b78d0 AD |
1896 | /* |
1897 | * Even if head has wrapped around only report the amount of | |
1898 | * data to be equal to the size - tail. Remember memcpy can't | |
1899 | * automaticly wrap around the receive buffer. | |
1900 | */ | |
191260a0 AC |
1901 | dataToRead = (wrapgap < bytesAvailable) ? wrapgap |
1902 | : bytesAvailable; | |
ae0b78d0 | 1903 | /* Make sure we don't overflow the buffer */ |
33f0f88f | 1904 | dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead); |
1da177e4 LT |
1905 | if (dataToRead == 0) |
1906 | break; | |
ae0b78d0 AD |
1907 | /* |
1908 | * Move data read from our card into the line disciplines | |
1909 | * buffer for translation if necessary. | |
1910 | */ | |
f2cf8e25 | 1911 | memcpy_fromio(rptr, ch->rxptr + tail, dataToRead); |
1da177e4 LT |
1912 | tail = (tail + dataToRead) & wrapmask; |
1913 | bytesAvailable -= dataToRead; | |
1da177e4 | 1914 | } /* End while there is data on the card */ |
1da177e4 | 1915 | globalwinon(ch); |
f2cf8e25 | 1916 | writew(tail, &bc->rout); |
1da177e4 | 1917 | /* Must be called with global data */ |
3969ffba | 1918 | tty_schedule_flip(tty); |
ae0b78d0 | 1919 | } |
1da177e4 | 1920 | |
ae0b78d0 | 1921 | static int info_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
1922 | unsigned int cmd, unsigned long arg) |
1923 | { | |
ae0b78d0 AD |
1924 | switch (cmd) { |
1925 | case DIGI_GETINFO: | |
1926 | { | |
1927 | struct digi_info di; | |
1da177e4 LT |
1928 | int brd; |
1929 | ||
ae0b78d0 | 1930 | if (get_user(brd, (unsigned int __user *)arg)) |
f2cf8e25 AC |
1931 | return -EFAULT; |
1932 | if (brd < 0 || brd >= num_cards || num_cards == 0) | |
1933 | return -ENODEV; | |
1da177e4 LT |
1934 | |
1935 | memset(&di, 0, sizeof(di)); | |
1936 | ||
ae0b78d0 | 1937 | di.board = brd; |
1da177e4 LT |
1938 | di.status = boards[brd].status; |
1939 | di.type = boards[brd].type ; | |
1940 | di.numports = boards[brd].numports ; | |
f2cf8e25 AC |
1941 | /* Legacy fixups - just move along nothing to see */ |
1942 | di.port = (unsigned char *)boards[brd].port ; | |
1943 | di.membase = (unsigned char *)boards[brd].membase ; | |
1da177e4 | 1944 | |
ae0b78d0 | 1945 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
1da177e4 LT |
1946 | return -EFAULT; |
1947 | break; | |
1948 | ||
ae0b78d0 | 1949 | } |
1da177e4 | 1950 | |
ae0b78d0 AD |
1951 | case DIGI_POLLER: |
1952 | { | |
1953 | int brd = arg & 0xff000000 >> 16; | |
1954 | unsigned char state = arg & 0xff; | |
1da177e4 | 1955 | |
f2cf8e25 AC |
1956 | if (brd < 0 || brd >= num_cards) { |
1957 | printk(KERN_ERR "epca: DIGI POLLER : brd not valid!\n"); | |
ae0b78d0 | 1958 | return -ENODEV; |
1da177e4 | 1959 | } |
ae0b78d0 AD |
1960 | digi_poller_inhibited = state; |
1961 | break; | |
1962 | } | |
1963 | ||
1964 | case DIGI_INIT: | |
1965 | { | |
1966 | /* | |
1967 | * This call is made by the apps to complete the | |
8dfba4d7 | 1968 | * initialization of the board(s). This routine is |
ae0b78d0 AD |
1969 | * responsible for setting the card to its initial |
1970 | * state and setting the drivers control fields to the | |
1971 | * sutianle settings for the card in question. | |
1972 | */ | |
1973 | int crd; | |
1974 | for (crd = 0; crd < num_cards; crd++) | |
1975 | post_fep_init(crd); | |
1976 | break; | |
1977 | } | |
1978 | default: | |
1979 | return -ENOTTY; | |
1980 | } | |
1981 | return 0; | |
1da177e4 | 1982 | } |
1da177e4 LT |
1983 | |
1984 | static int pc_tiocmget(struct tty_struct *tty, struct file *file) | |
1985 | { | |
c9f19e96 | 1986 | struct channel *ch = tty->driver_data; |
bc9a5154 | 1987 | struct board_chan __iomem *bc; |
1da177e4 LT |
1988 | unsigned int mstat, mflag = 0; |
1989 | unsigned long flags; | |
1990 | ||
1991 | if (ch) | |
1992 | bc = ch->brdchan; | |
1993 | else | |
f2cf8e25 | 1994 | return -EINVAL; |
1da177e4 | 1995 | |
f2cf8e25 | 1996 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 1997 | globalwinon(ch); |
f2cf8e25 | 1998 | mstat = readb(&bc->mstat); |
1da177e4 | 1999 | memoff(ch); |
f2cf8e25 | 2000 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2001 | |
2002 | if (mstat & ch->m_dtr) | |
2003 | mflag |= TIOCM_DTR; | |
1da177e4 LT |
2004 | if (mstat & ch->m_rts) |
2005 | mflag |= TIOCM_RTS; | |
1da177e4 LT |
2006 | if (mstat & ch->m_cts) |
2007 | mflag |= TIOCM_CTS; | |
1da177e4 LT |
2008 | if (mstat & ch->dsr) |
2009 | mflag |= TIOCM_DSR; | |
1da177e4 LT |
2010 | if (mstat & ch->m_ri) |
2011 | mflag |= TIOCM_RI; | |
1da177e4 LT |
2012 | if (mstat & ch->dcd) |
2013 | mflag |= TIOCM_CD; | |
1da177e4 LT |
2014 | return mflag; |
2015 | } | |
2016 | ||
2017 | static int pc_tiocmset(struct tty_struct *tty, struct file *file, | |
2018 | unsigned int set, unsigned int clear) | |
2019 | { | |
c9f19e96 | 2020 | struct channel *ch = tty->driver_data; |
1da177e4 LT |
2021 | unsigned long flags; |
2022 | ||
f2cf8e25 AC |
2023 | if (!ch) |
2024 | return -EINVAL; | |
1da177e4 | 2025 | |
f2cf8e25 | 2026 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2027 | /* |
ae0b78d0 AD |
2028 | * I think this modemfake stuff is broken. It doesn't correctly reflect |
2029 | * the behaviour desired by the TIOCM* ioctls. Therefore this is | |
2030 | * probably broken. | |
1da177e4 LT |
2031 | */ |
2032 | if (set & TIOCM_RTS) { | |
2033 | ch->modemfake |= ch->m_rts; | |
2034 | ch->modem |= ch->m_rts; | |
2035 | } | |
2036 | if (set & TIOCM_DTR) { | |
2037 | ch->modemfake |= ch->m_dtr; | |
2038 | ch->modem |= ch->m_dtr; | |
2039 | } | |
2040 | if (clear & TIOCM_RTS) { | |
2041 | ch->modemfake |= ch->m_rts; | |
2042 | ch->modem &= ~ch->m_rts; | |
2043 | } | |
2044 | if (clear & TIOCM_DTR) { | |
2045 | ch->modemfake |= ch->m_dtr; | |
2046 | ch->modem &= ~ch->m_dtr; | |
2047 | } | |
1da177e4 | 2048 | globalwinon(ch); |
ae0b78d0 AD |
2049 | /* |
2050 | * The below routine generally sets up parity, baud, flow control | |
2051 | * issues, etc.... It effect both control flags and input flags. | |
2052 | */ | |
191260a0 | 2053 | epcaparam(tty, ch); |
1da177e4 | 2054 | memoff(ch); |
f2cf8e25 | 2055 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2056 | return 0; |
2057 | } | |
2058 | ||
191260a0 AC |
2059 | static int pc_ioctl(struct tty_struct *tty, struct file *file, |
2060 | unsigned int cmd, unsigned long arg) | |
ae0b78d0 | 2061 | { |
1da177e4 | 2062 | digiflow_t dflow; |
1da177e4 LT |
2063 | unsigned long flags; |
2064 | unsigned int mflag, mstat; | |
2065 | unsigned char startc, stopc; | |
bc9a5154 | 2066 | struct board_chan __iomem *bc; |
c9f19e96 | 2067 | struct channel *ch = tty->driver_data; |
1da177e4 | 2068 | void __user *argp = (void __user *)arg; |
ae0b78d0 | 2069 | |
1da177e4 LT |
2070 | if (ch) |
2071 | bc = ch->brdchan; | |
ae0b78d0 | 2072 | else |
f2cf8e25 | 2073 | return -EINVAL; |
ae0b78d0 | 2074 | switch (cmd) { |
ae0b78d0 AD |
2075 | case TIOCMODG: |
2076 | mflag = pc_tiocmget(tty, file); | |
2077 | if (put_user(mflag, (unsigned long __user *)argp)) | |
2078 | return -EFAULT; | |
2079 | break; | |
2080 | case TIOCMODS: | |
2081 | if (get_user(mstat, (unsigned __user *)argp)) | |
2082 | return -EFAULT; | |
2083 | return pc_tiocmset(tty, file, mstat, ~mstat); | |
2084 | case TIOCSDTR: | |
2085 | spin_lock_irqsave(&epca_lock, flags); | |
2086 | ch->omodem |= ch->m_dtr; | |
2087 | globalwinon(ch); | |
2088 | fepcmd(ch, SETMODEM, ch->m_dtr, 0, 10, 1); | |
2089 | memoff(ch); | |
2090 | spin_unlock_irqrestore(&epca_lock, flags); | |
2091 | break; | |
1da177e4 | 2092 | |
ae0b78d0 AD |
2093 | case TIOCCDTR: |
2094 | spin_lock_irqsave(&epca_lock, flags); | |
2095 | ch->omodem &= ~ch->m_dtr; | |
2096 | globalwinon(ch); | |
2097 | fepcmd(ch, SETMODEM, 0, ch->m_dtr, 10, 1); | |
2098 | memoff(ch); | |
2099 | spin_unlock_irqrestore(&epca_lock, flags); | |
2100 | break; | |
2101 | case DIGI_GETA: | |
2102 | if (copy_to_user(argp, &ch->digiext, sizeof(digi_t))) | |
2103 | return -EFAULT; | |
2104 | break; | |
2105 | case DIGI_SETAW: | |
2106 | case DIGI_SETAF: | |
37925e05 | 2107 | lock_kernel(); |
ae0b78d0 | 2108 | if (cmd == DIGI_SETAW) { |
191260a0 AC |
2109 | /* Setup an event to indicate when the transmit |
2110 | buffer empties */ | |
f2cf8e25 | 2111 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 | 2112 | setup_empty_event(tty, ch); |
f2cf8e25 | 2113 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2114 | tty_wait_until_sent(tty, 0); |
2115 | } else { | |
2116 | /* ldisc lock already held in ioctl */ | |
a352def2 AC |
2117 | if (tty->ldisc.ops->flush_buffer) |
2118 | tty->ldisc.ops->flush_buffer(tty); | |
ae0b78d0 | 2119 | } |
37925e05 | 2120 | unlock_kernel(); |
ae0b78d0 AD |
2121 | /* Fall Thru */ |
2122 | case DIGI_SETA: | |
2123 | if (copy_from_user(&ch->digiext, argp, sizeof(digi_t))) | |
2124 | return -EFAULT; | |
2125 | ||
2126 | if (ch->digiext.digi_flags & DIGI_ALTPIN) { | |
2127 | ch->dcd = ch->m_dsr; | |
2128 | ch->dsr = ch->m_dcd; | |
2129 | } else { | |
2130 | ch->dcd = ch->m_dcd; | |
2131 | ch->dsr = ch->m_dsr; | |
1da177e4 | 2132 | } |
1da177e4 | 2133 | |
ae0b78d0 AD |
2134 | spin_lock_irqsave(&epca_lock, flags); |
2135 | globalwinon(ch); | |
1da177e4 | 2136 | |
ae0b78d0 AD |
2137 | /* |
2138 | * The below routine generally sets up parity, baud, flow | |
2139 | * control issues, etc.... It effect both control flags and | |
2140 | * input flags. | |
2141 | */ | |
191260a0 | 2142 | epcaparam(tty, ch); |
ae0b78d0 AD |
2143 | memoff(ch); |
2144 | spin_unlock_irqrestore(&epca_lock, flags); | |
2145 | break; | |
2146 | ||
2147 | case DIGI_GETFLOW: | |
2148 | case DIGI_GETAFLOW: | |
2149 | spin_lock_irqsave(&epca_lock, flags); | |
2150 | globalwinon(ch); | |
2151 | if (cmd == DIGI_GETFLOW) { | |
2152 | dflow.startc = readb(&bc->startc); | |
2153 | dflow.stopc = readb(&bc->stopc); | |
2154 | } else { | |
2155 | dflow.startc = readb(&bc->startca); | |
2156 | dflow.stopc = readb(&bc->stopca); | |
2157 | } | |
2158 | memoff(ch); | |
2159 | spin_unlock_irqrestore(&epca_lock, flags); | |
2160 | ||
2161 | if (copy_to_user(argp, &dflow, sizeof(dflow))) | |
2162 | return -EFAULT; | |
2163 | break; | |
2164 | ||
2165 | case DIGI_SETAFLOW: | |
2166 | case DIGI_SETFLOW: | |
2167 | if (cmd == DIGI_SETFLOW) { | |
2168 | startc = ch->startc; | |
2169 | stopc = ch->stopc; | |
2170 | } else { | |
2171 | startc = ch->startca; | |
2172 | stopc = ch->stopca; | |
2173 | } | |
1da177e4 | 2174 | |
ae0b78d0 AD |
2175 | if (copy_from_user(&dflow, argp, sizeof(dflow))) |
2176 | return -EFAULT; | |
2177 | ||
191260a0 AC |
2178 | if (dflow.startc != startc || dflow.stopc != stopc) { |
2179 | /* Begin if setflow toggled */ | |
f2cf8e25 | 2180 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2181 | globalwinon(ch); |
1da177e4 | 2182 | |
f2cf8e25 | 2183 | if (cmd == DIGI_SETFLOW) { |
ae0b78d0 AD |
2184 | ch->fepstartc = ch->startc = dflow.startc; |
2185 | ch->fepstopc = ch->stopc = dflow.stopc; | |
191260a0 AC |
2186 | fepcmd(ch, SONOFFC, ch->fepstartc, |
2187 | ch->fepstopc, 0, 1); | |
f2cf8e25 | 2188 | } else { |
ae0b78d0 AD |
2189 | ch->fepstartca = ch->startca = dflow.startc; |
2190 | ch->fepstopca = ch->stopca = dflow.stopc; | |
191260a0 AC |
2191 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, |
2192 | ch->fepstopca, 0, 1); | |
1da177e4 LT |
2193 | } |
2194 | ||
ae0b78d0 AD |
2195 | if (ch->statusflags & TXSTOPPED) |
2196 | pc_start(tty); | |
1da177e4 | 2197 | |
ae0b78d0 AD |
2198 | memoff(ch); |
2199 | spin_unlock_irqrestore(&epca_lock, flags); | |
2200 | } /* End if setflow toggled */ | |
2201 | break; | |
2202 | default: | |
2203 | return -ENOIOCTLCMD; | |
2204 | } | |
1da177e4 | 2205 | return 0; |
ae0b78d0 | 2206 | } |
1da177e4 | 2207 | |
606d099c | 2208 | static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
ae0b78d0 | 2209 | { |
1da177e4 LT |
2210 | struct channel *ch; |
2211 | unsigned long flags; | |
ae0b78d0 AD |
2212 | /* |
2213 | * verifyChannel returns the channel from the tty struct if it is | |
2214 | * valid. This serves as a sanity check. | |
2215 | */ | |
191260a0 AC |
2216 | ch = verifyChannel(tty); |
2217 | ||
2218 | if (ch != NULL) { /* Begin if channel valid */ | |
f2cf8e25 | 2219 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
2220 | globalwinon(ch); |
2221 | epcaparam(tty, ch); | |
2222 | memoff(ch); | |
f2cf8e25 | 2223 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2224 | |
2225 | if ((old_termios->c_cflag & CRTSCTS) && | |
2226 | ((tty->termios->c_cflag & CRTSCTS) == 0)) | |
2227 | tty->hw_stopped = 0; | |
2228 | ||
2229 | if (!(old_termios->c_cflag & CLOCAL) && | |
2230 | (tty->termios->c_cflag & CLOCAL)) | |
52d41738 | 2231 | wake_up_interruptible(&ch->port.open_wait); |
1da177e4 | 2232 | |
1da177e4 | 2233 | } /* End if channel valid */ |
ae0b78d0 | 2234 | } |
1da177e4 | 2235 | |
c4028958 | 2236 | static void do_softint(struct work_struct *work) |
ae0b78d0 | 2237 | { |
c4028958 | 2238 | struct channel *ch = container_of(work, struct channel, tqueue); |
1da177e4 | 2239 | /* Called in response to a modem change event */ |
ae0b78d0 | 2240 | if (ch && ch->magic == EPCA_MAGIC) { |
3969ffba | 2241 | struct tty_struct *tty = tty_port_tty_get(&ch->port);; |
1da177e4 | 2242 | |
f2cf8e25 | 2243 | if (tty && tty->driver_data) { |
ae0b78d0 | 2244 | if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) { |
191260a0 | 2245 | tty_hangup(tty); |
52d41738 | 2246 | wake_up_interruptible(&ch->port.open_wait); |
6ed1dbae | 2247 | clear_bit(ASYNC_NORMAL_ACTIVE, &ch->port.flags); |
ae0b78d0 | 2248 | } |
1da177e4 | 2249 | } |
3969ffba | 2250 | tty_kref_put(tty); |
ae0b78d0 AD |
2251 | } |
2252 | } | |
1da177e4 | 2253 | |
ae0b78d0 AD |
2254 | /* |
2255 | * pc_stop and pc_start provide software flow control to the routine and the | |
2256 | * pc_ioctl routine. | |
2257 | */ | |
1da177e4 | 2258 | static void pc_stop(struct tty_struct *tty) |
ae0b78d0 | 2259 | { |
1da177e4 LT |
2260 | struct channel *ch; |
2261 | unsigned long flags; | |
ae0b78d0 AD |
2262 | /* |
2263 | * verifyChannel returns the channel from the tty struct if it is | |
2264 | * valid. This serves as a sanity check. | |
2265 | */ | |
191260a0 AC |
2266 | ch = verifyChannel(tty); |
2267 | if (ch != NULL) { | |
f2cf8e25 | 2268 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 AC |
2269 | if ((ch->statusflags & TXSTOPPED) == 0) { |
2270 | /* Begin if transmit stop requested */ | |
1da177e4 | 2271 | globalwinon(ch); |
1da177e4 | 2272 | /* STOP transmitting now !! */ |
1da177e4 | 2273 | fepcmd(ch, PAUSETX, 0, 0, 0, 0); |
1da177e4 LT |
2274 | ch->statusflags |= TXSTOPPED; |
2275 | memoff(ch); | |
1da177e4 | 2276 | } /* End if transmit stop requested */ |
f2cf8e25 | 2277 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2278 | } |
2279 | } | |
1da177e4 LT |
2280 | |
2281 | static void pc_start(struct tty_struct *tty) | |
ae0b78d0 | 2282 | { |
1da177e4 | 2283 | struct channel *ch; |
ae0b78d0 AD |
2284 | /* |
2285 | * verifyChannel returns the channel from the tty struct if it is | |
2286 | * valid. This serves as a sanity check. | |
2287 | */ | |
191260a0 AC |
2288 | ch = verifyChannel(tty); |
2289 | if (ch != NULL) { | |
1da177e4 | 2290 | unsigned long flags; |
f2cf8e25 | 2291 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 AC |
2292 | /* Just in case output was resumed because of a change |
2293 | in Digi-flow */ | |
2294 | if (ch->statusflags & TXSTOPPED) { | |
2295 | /* Begin transmit resume requested */ | |
bc9a5154 | 2296 | struct board_chan __iomem *bc; |
1da177e4 LT |
2297 | globalwinon(ch); |
2298 | bc = ch->brdchan; | |
2299 | if (ch->statusflags & LOWWAIT) | |
f2cf8e25 | 2300 | writeb(1, &bc->ilow); |
1da177e4 | 2301 | /* Okay, you can start transmitting again... */ |
1da177e4 | 2302 | fepcmd(ch, RESUMETX, 0, 0, 0, 0); |
1da177e4 LT |
2303 | ch->statusflags &= ~TXSTOPPED; |
2304 | memoff(ch); | |
1da177e4 | 2305 | } /* End transmit resume requested */ |
f2cf8e25 | 2306 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2307 | } |
2308 | } | |
2309 | ||
2310 | /* | |
2311 | * The below routines pc_throttle and pc_unthrottle are used to slow (And | |
2312 | * resume) the receipt of data into the kernels receive buffers. The exact | |
2313 | * occurrence of this depends on the size of the kernels receive buffer and | |
2314 | * what the 'watermarks' are set to for that buffer. See the n_ttys.c file for | |
2315 | * more details. | |
2316 | */ | |
2317 | static void pc_throttle(struct tty_struct *tty) | |
2318 | { | |
1da177e4 LT |
2319 | struct channel *ch; |
2320 | unsigned long flags; | |
ae0b78d0 AD |
2321 | /* |
2322 | * verifyChannel returns the channel from the tty struct if it is | |
2323 | * valid. This serves as a sanity check. | |
2324 | */ | |
191260a0 AC |
2325 | ch = verifyChannel(tty); |
2326 | if (ch != NULL) { | |
f2cf8e25 AC |
2327 | spin_lock_irqsave(&epca_lock, flags); |
2328 | if ((ch->statusflags & RXSTOPPED) == 0) { | |
1da177e4 LT |
2329 | globalwinon(ch); |
2330 | fepcmd(ch, PAUSERX, 0, 0, 0, 0); | |
1da177e4 LT |
2331 | ch->statusflags |= RXSTOPPED; |
2332 | memoff(ch); | |
2333 | } | |
f2cf8e25 | 2334 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2335 | } |
2336 | } | |
1da177e4 LT |
2337 | |
2338 | static void pc_unthrottle(struct tty_struct *tty) | |
ae0b78d0 | 2339 | { |
1da177e4 LT |
2340 | struct channel *ch; |
2341 | unsigned long flags; | |
ae0b78d0 AD |
2342 | /* |
2343 | * verifyChannel returns the channel from the tty struct if it is | |
2344 | * valid. This serves as a sanity check. | |
2345 | */ | |
191260a0 AC |
2346 | ch = verifyChannel(tty); |
2347 | if (ch != NULL) { | |
2348 | /* Just in case output was resumed because of a change | |
2349 | in Digi-flow */ | |
f2cf8e25 AC |
2350 | spin_lock_irqsave(&epca_lock, flags); |
2351 | if (ch->statusflags & RXSTOPPED) { | |
1da177e4 | 2352 | globalwinon(ch); |
1da177e4 | 2353 | fepcmd(ch, RESUMERX, 0, 0, 0, 0); |
1da177e4 LT |
2354 | ch->statusflags &= ~RXSTOPPED; |
2355 | memoff(ch); | |
2356 | } | |
f2cf8e25 | 2357 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2358 | } |
2359 | } | |
1da177e4 | 2360 | |
dcbf1280 | 2361 | static int pc_send_break(struct tty_struct *tty, int msec) |
ae0b78d0 | 2362 | { |
c9f19e96 | 2363 | struct channel *ch = tty->driver_data; |
1da177e4 LT |
2364 | unsigned long flags; |
2365 | ||
dcbf1280 | 2366 | if (msec == -1) |
252883e5 AC |
2367 | msec = 0xFFFF; |
2368 | else if (msec > 0xFFFE) | |
2369 | msec = 0xFFFE; | |
2370 | else if (msec < 1) | |
2371 | msec = 1; | |
dcbf1280 | 2372 | |
f2cf8e25 | 2373 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2374 | globalwinon(ch); |
ae0b78d0 AD |
2375 | /* |
2376 | * Maybe I should send an infinite break here, schedule() for msec | |
2377 | * amount of time, and then stop the break. This way, the user can't | |
2378 | * screw up the FEP by causing digi_send_break() to be called (i.e. via | |
2379 | * an ioctl()) more than once in msec amount of time. | |
2380 | * Try this for now... | |
2381 | */ | |
1da177e4 LT |
2382 | fepcmd(ch, SENDBREAK, msec, 0, 10, 0); |
2383 | memoff(ch); | |
f2cf8e25 | 2384 | spin_unlock_irqrestore(&epca_lock, flags); |
dcbf1280 | 2385 | return 0; |
ae0b78d0 | 2386 | } |
1da177e4 | 2387 | |
f2cf8e25 | 2388 | /* Caller MUST hold the lock */ |
1da177e4 | 2389 | static void setup_empty_event(struct tty_struct *tty, struct channel *ch) |
ae0b78d0 | 2390 | { |
bc9a5154 | 2391 | struct board_chan __iomem *bc = ch->brdchan; |
1da177e4 | 2392 | |
1da177e4 LT |
2393 | globalwinon(ch); |
2394 | ch->statusflags |= EMPTYWAIT; | |
ae0b78d0 AD |
2395 | /* |
2396 | * When set the iempty flag request a event to be generated when the | |
2397 | * transmit buffer is empty (If there is no BREAK in progress). | |
2398 | */ | |
f2cf8e25 | 2399 | writeb(1, &bc->iempty); |
1da177e4 | 2400 | memoff(ch); |
ae0b78d0 | 2401 | } |
1da177e4 | 2402 | |
88e88249 DH |
2403 | #ifndef MODULE |
2404 | static void __init epca_setup(char *str, int *ints) | |
ae0b78d0 | 2405 | { |
1da177e4 LT |
2406 | struct board_info board; |
2407 | int index, loop, last; | |
2408 | char *temp, *t2; | |
2409 | unsigned len; | |
2410 | ||
ae0b78d0 AD |
2411 | /* |
2412 | * If this routine looks a little strange it is because it is only | |
2413 | * called if a LILO append command is given to boot the kernel with | |
2414 | * parameters. In this way, we can provide the user a method of | |
2415 | * changing his board configuration without rebuilding the kernel. | |
2416 | */ | |
2417 | if (!liloconfig) | |
2418 | liloconfig = 1; | |
1da177e4 LT |
2419 | |
2420 | memset(&board, 0, sizeof(board)); | |
2421 | ||
2422 | /* Assume the data is int first, later we can change it */ | |
2423 | /* I think that array position 0 of ints holds the number of args */ | |
2424 | for (last = 0, index = 1; index <= ints[0]; index++) | |
ae0b78d0 AD |
2425 | switch (index) { /* Begin parse switch */ |
2426 | case 1: | |
2427 | board.status = ints[index]; | |
2428 | /* | |
2429 | * We check for 2 (As opposed to 1; because 2 is a flag | |
2430 | * instructing the driver to ignore epcaconfig.) For | |
2431 | * this reason we check for 2. | |
2432 | */ | |
191260a0 AC |
2433 | if (board.status == 2) { |
2434 | /* Begin ignore epcaconfig as well as lilo cmd line */ | |
ae0b78d0 AD |
2435 | nbdevs = 0; |
2436 | num_cards = 0; | |
2437 | return; | |
2438 | } /* End ignore epcaconfig as well as lilo cmd line */ | |
2439 | ||
2440 | if (board.status > 2) { | |
191260a0 AC |
2441 | printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", |
2442 | board.status); | |
ae0b78d0 AD |
2443 | invalid_lilo_config = 1; |
2444 | setup_error_code |= INVALID_BOARD_STATUS; | |
2445 | return; | |
2446 | } | |
2447 | last = index; | |
2448 | break; | |
2449 | case 2: | |
2450 | board.type = ints[index]; | |
2451 | if (board.type >= PCIXEM) { | |
2452 | printk(KERN_ERR "epca_setup: Invalid board type 0x%x\n", board.type); | |
2453 | invalid_lilo_config = 1; | |
2454 | setup_error_code |= INVALID_BOARD_TYPE; | |
2455 | return; | |
2456 | } | |
2457 | last = index; | |
2458 | break; | |
2459 | case 3: | |
2460 | board.altpin = ints[index]; | |
2461 | if (board.altpin > 1) { | |
2462 | printk(KERN_ERR "epca_setup: Invalid board altpin 0x%x\n", board.altpin); | |
2463 | invalid_lilo_config = 1; | |
2464 | setup_error_code |= INVALID_ALTPIN; | |
2465 | return; | |
2466 | } | |
2467 | last = index; | |
2468 | break; | |
2469 | ||
2470 | case 4: | |
2471 | board.numports = ints[index]; | |
2472 | if (board.numports < 2 || board.numports > 256) { | |
2473 | printk(KERN_ERR "epca_setup: Invalid board numports 0x%x\n", board.numports); | |
2474 | invalid_lilo_config = 1; | |
2475 | setup_error_code |= INVALID_NUM_PORTS; | |
2476 | return; | |
2477 | } | |
2478 | nbdevs += board.numports; | |
2479 | last = index; | |
2480 | break; | |
1da177e4 | 2481 | |
ae0b78d0 AD |
2482 | case 5: |
2483 | board.port = ints[index]; | |
2484 | if (ints[index] <= 0) { | |
2485 | printk(KERN_ERR "epca_setup: Invalid io port 0x%x\n", (unsigned int)board.port); | |
2486 | invalid_lilo_config = 1; | |
2487 | setup_error_code |= INVALID_PORT_BASE; | |
1da177e4 | 2488 | return; |
ae0b78d0 AD |
2489 | } |
2490 | last = index; | |
2491 | break; | |
2492 | ||
2493 | case 6: | |
2494 | board.membase = ints[index]; | |
2495 | if (ints[index] <= 0) { | |
191260a0 AC |
2496 | printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n", |
2497 | (unsigned int)board.membase); | |
ae0b78d0 AD |
2498 | invalid_lilo_config = 1; |
2499 | setup_error_code |= INVALID_MEM_BASE; | |
2500 | return; | |
2501 | } | |
2502 | last = index; | |
2503 | break; | |
2504 | ||
2505 | default: | |
2506 | printk(KERN_ERR "<Error> - epca_setup: Too many integer parms\n"); | |
2507 | return; | |
1da177e4 LT |
2508 | |
2509 | } /* End parse switch */ | |
2510 | ||
f2cf8e25 | 2511 | while (str && *str) { /* Begin while there is a string arg */ |
1da177e4 LT |
2512 | /* find the next comma or terminator */ |
2513 | temp = str; | |
1da177e4 LT |
2514 | /* While string is not null, and a comma hasn't been found */ |
2515 | while (*temp && (*temp != ',')) | |
2516 | temp++; | |
1da177e4 LT |
2517 | if (!*temp) |
2518 | temp = NULL; | |
2519 | else | |
2520 | *temp++ = 0; | |
1da177e4 LT |
2521 | /* Set index to the number of args + 1 */ |
2522 | index = last + 1; | |
2523 | ||
ae0b78d0 AD |
2524 | switch (index) { |
2525 | case 1: | |
2526 | len = strlen(str); | |
2527 | if (strncmp("Disable", str, len) == 0) | |
2528 | board.status = 0; | |
2529 | else if (strncmp("Enable", str, len) == 0) | |
2530 | board.status = 1; | |
2531 | else { | |
2532 | printk(KERN_ERR "epca_setup: Invalid status %s\n", str); | |
2533 | invalid_lilo_config = 1; | |
2534 | setup_error_code |= INVALID_BOARD_STATUS; | |
2535 | return; | |
2536 | } | |
2537 | last = index; | |
2538 | break; | |
1da177e4 | 2539 | |
ae0b78d0 AD |
2540 | case 2: |
2541 | for (loop = 0; loop < EPCA_NUM_TYPES; loop++) | |
2542 | if (strcmp(board_desc[loop], str) == 0) | |
2543 | break; | |
2544 | /* | |
2545 | * If the index incremented above refers to a | |
2546 | * legitamate board type set it here. | |
2547 | */ | |
2548 | if (index < EPCA_NUM_TYPES) | |
2549 | board.type = loop; | |
2550 | else { | |
2551 | printk(KERN_ERR "epca_setup: Invalid board type: %s\n", str); | |
2552 | invalid_lilo_config = 1; | |
2553 | setup_error_code |= INVALID_BOARD_TYPE; | |
2554 | return; | |
2555 | } | |
2556 | last = index; | |
2557 | break; | |
2558 | ||
2559 | case 3: | |
2560 | len = strlen(str); | |
2561 | if (strncmp("Disable", str, len) == 0) | |
2562 | board.altpin = 0; | |
2563 | else if (strncmp("Enable", str, len) == 0) | |
2564 | board.altpin = 1; | |
2565 | else { | |
2566 | printk(KERN_ERR "epca_setup: Invalid altpin %s\n", str); | |
2567 | invalid_lilo_config = 1; | |
2568 | setup_error_code |= INVALID_ALTPIN; | |
2569 | return; | |
2570 | } | |
2571 | last = index; | |
2572 | break; | |
1da177e4 | 2573 | |
ae0b78d0 AD |
2574 | case 4: |
2575 | t2 = str; | |
2576 | while (isdigit(*t2)) | |
2577 | t2++; | |
1da177e4 | 2578 | |
ae0b78d0 AD |
2579 | if (*t2) { |
2580 | printk(KERN_ERR "epca_setup: Invalid port count %s\n", str); | |
2581 | invalid_lilo_config = 1; | |
2582 | setup_error_code |= INVALID_NUM_PORTS; | |
2583 | return; | |
2584 | } | |
1da177e4 | 2585 | |
ae0b78d0 AD |
2586 | /* |
2587 | * There is not a man page for simple_strtoul but the | |
2588 | * code can be found in vsprintf.c. The first argument | |
2589 | * is the string to translate (To an unsigned long | |
2590 | * obviously), the second argument can be the address | |
2591 | * of any character variable or a NULL. If a variable | |
2592 | * is given, the end pointer of the string will be | |
2593 | * stored in that variable; if a NULL is given the end | |
2594 | * pointer will not be returned. The last argument is | |
2595 | * the base to use. If a 0 is indicated, the routine | |
2596 | * will attempt to determine the proper base by looking | |
2597 | * at the values prefix (A '0' for octal, a 'x' for | |
2598 | * hex, etc ... If a value is given it will use that | |
2599 | * value as the base. | |
2600 | */ | |
2601 | board.numports = simple_strtoul(str, NULL, 0); | |
2602 | nbdevs += board.numports; | |
2603 | last = index; | |
2604 | break; | |
2605 | ||
2606 | case 5: | |
2607 | t2 = str; | |
2608 | while (isxdigit(*t2)) | |
2609 | t2++; | |
2610 | ||
2611 | if (*t2) { | |
2612 | printk(KERN_ERR "epca_setup: Invalid i/o address %s\n", str); | |
2613 | invalid_lilo_config = 1; | |
2614 | setup_error_code |= INVALID_PORT_BASE; | |
2615 | return; | |
2616 | } | |
2617 | ||
2618 | board.port = simple_strtoul(str, NULL, 16); | |
2619 | last = index; | |
2620 | break; | |
2621 | ||
2622 | case 6: | |
2623 | t2 = str; | |
2624 | while (isxdigit(*t2)) | |
2625 | t2++; | |
2626 | ||
2627 | if (*t2) { | |
191260a0 | 2628 | printk(KERN_ERR "epca_setup: Invalid memory base %s\n", str); |
ae0b78d0 AD |
2629 | invalid_lilo_config = 1; |
2630 | setup_error_code |= INVALID_MEM_BASE; | |
1da177e4 | 2631 | return; |
ae0b78d0 AD |
2632 | } |
2633 | board.membase = simple_strtoul(str, NULL, 16); | |
2634 | last = index; | |
2635 | break; | |
2636 | default: | |
2637 | printk(KERN_ERR "epca: Too many string parms\n"); | |
2638 | return; | |
1da177e4 LT |
2639 | } |
2640 | str = temp; | |
1da177e4 LT |
2641 | } /* End while there is a string arg */ |
2642 | ||
f2cf8e25 AC |
2643 | if (last < 6) { |
2644 | printk(KERN_ERR "epca: Insufficient parms specified\n"); | |
1da177e4 LT |
2645 | return; |
2646 | } | |
ae0b78d0 | 2647 | |
1da177e4 | 2648 | /* I should REALLY validate the stuff here */ |
1da177e4 | 2649 | /* Copies our local copy of board into boards */ |
191260a0 | 2650 | memcpy((void *)&boards[num_cards], (void *)&board, sizeof(board)); |
1da177e4 | 2651 | /* Does this get called once per lilo arg are what ? */ |
ae0b78d0 AD |
2652 | printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n", |
2653 | num_cards, board_desc[board.type], | |
1da177e4 | 2654 | board.numports, (int)board.port, (unsigned int) board.membase); |
1da177e4 | 2655 | num_cards++; |
ae0b78d0 | 2656 | } |
1da177e4 | 2657 | |
88e88249 DH |
2658 | static int __init epca_real_setup(char *str) |
2659 | { | |
2660 | int ints[11]; | |
2661 | ||
2662 | epca_setup(get_options(str, 11, ints), ints); | |
2663 | return 1; | |
2664 | } | |
2665 | ||
2666 | __setup("digiepca", epca_real_setup); | |
2667 | #endif | |
2668 | ||
1da177e4 LT |
2669 | enum epic_board_types { |
2670 | brd_xr = 0, | |
2671 | brd_xem, | |
2672 | brd_cx, | |
2673 | brd_xrj, | |
2674 | }; | |
2675 | ||
1da177e4 LT |
2676 | /* indexed directly by epic_board_types enum */ |
2677 | static struct { | |
2678 | unsigned char board_type; | |
2679 | unsigned bar_idx; /* PCI base address region */ | |
2680 | } epca_info_tbl[] = { | |
2681 | { PCIXR, 0, }, | |
2682 | { PCIXEM, 0, }, | |
2683 | { PCICX, 0, }, | |
2684 | { PCIXRJ, 2, }, | |
2685 | }; | |
2686 | ||
ae0b78d0 | 2687 | static int __devinit epca_init_one(struct pci_dev *pdev, |
1da177e4 LT |
2688 | const struct pci_device_id *ent) |
2689 | { | |
2690 | static int board_num = -1; | |
2691 | int board_idx, info_idx = ent->driver_data; | |
2692 | unsigned long addr; | |
2693 | ||
2694 | if (pci_enable_device(pdev)) | |
2695 | return -EIO; | |
2696 | ||
2697 | board_num++; | |
2698 | board_idx = board_num + num_cards; | |
2699 | if (board_idx >= MAXBOARDS) | |
2700 | goto err_out; | |
ae0b78d0 | 2701 | |
191260a0 | 2702 | addr = pci_resource_start(pdev, epca_info_tbl[info_idx].bar_idx); |
1da177e4 | 2703 | if (!addr) { |
191260a0 | 2704 | printk(KERN_ERR PFX "PCI region #%d not available (size 0)\n", |
1da177e4 LT |
2705 | epca_info_tbl[info_idx].bar_idx); |
2706 | goto err_out; | |
2707 | } | |
2708 | ||
2709 | boards[board_idx].status = ENABLED; | |
2710 | boards[board_idx].type = epca_info_tbl[info_idx].board_type; | |
2711 | boards[board_idx].numports = 0x0; | |
f2cf8e25 AC |
2712 | boards[board_idx].port = addr + PCI_IO_OFFSET; |
2713 | boards[board_idx].membase = addr; | |
1da177e4 | 2714 | |
191260a0 AC |
2715 | if (!request_mem_region(addr + PCI_IO_OFFSET, 0x200000, "epca")) { |
2716 | printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", | |
1da177e4 LT |
2717 | 0x200000, addr + PCI_IO_OFFSET); |
2718 | goto err_out; | |
2719 | } | |
2720 | ||
191260a0 AC |
2721 | boards[board_idx].re_map_port = ioremap_nocache(addr + PCI_IO_OFFSET, |
2722 | 0x200000); | |
1da177e4 | 2723 | if (!boards[board_idx].re_map_port) { |
191260a0 | 2724 | printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
1da177e4 LT |
2725 | 0x200000, addr + PCI_IO_OFFSET); |
2726 | goto err_out_free_pciio; | |
2727 | } | |
2728 | ||
191260a0 AC |
2729 | if (!request_mem_region(addr, 0x200000, "epca")) { |
2730 | printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", | |
1da177e4 LT |
2731 | 0x200000, addr); |
2732 | goto err_out_free_iounmap; | |
2733 | } | |
2734 | ||
191260a0 | 2735 | boards[board_idx].re_map_membase = ioremap_nocache(addr, 0x200000); |
1da177e4 | 2736 | if (!boards[board_idx].re_map_membase) { |
191260a0 | 2737 | printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
1da177e4 LT |
2738 | 0x200000, addr + PCI_IO_OFFSET); |
2739 | goto err_out_free_memregion; | |
2740 | } | |
2741 | ||
ae0b78d0 AD |
2742 | /* |
2743 | * I don't know what the below does, but the hardware guys say its | |
2744 | * required on everything except PLX (In this case XRJ). | |
2745 | */ | |
1da177e4 | 2746 | if (info_idx != brd_xrj) { |
ae0b78d0 | 2747 | pci_write_config_byte(pdev, 0x40, 0); |
1da177e4 LT |
2748 | pci_write_config_byte(pdev, 0x46, 0); |
2749 | } | |
ae0b78d0 | 2750 | |
1da177e4 LT |
2751 | return 0; |
2752 | ||
2753 | err_out_free_memregion: | |
191260a0 | 2754 | release_mem_region(addr, 0x200000); |
1da177e4 | 2755 | err_out_free_iounmap: |
191260a0 | 2756 | iounmap(boards[board_idx].re_map_port); |
1da177e4 | 2757 | err_out_free_pciio: |
191260a0 | 2758 | release_mem_region(addr + PCI_IO_OFFSET, 0x200000); |
1da177e4 LT |
2759 | err_out: |
2760 | return -ENODEV; | |
2761 | } | |
2762 | ||
2763 | ||
2764 | static struct pci_device_id epca_pci_tbl[] = { | |
2765 | { PCI_VENDOR_DIGI, PCI_DEVICE_XR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xr }, | |
2766 | { PCI_VENDOR_DIGI, PCI_DEVICE_XEM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xem }, | |
2767 | { PCI_VENDOR_DIGI, PCI_DEVICE_CX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_cx }, | |
2768 | { PCI_VENDOR_DIGI, PCI_DEVICE_XRJ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xrj }, | |
2769 | { 0, } | |
2770 | }; | |
2771 | ||
2772 | MODULE_DEVICE_TABLE(pci, epca_pci_tbl); | |
2773 | ||
11fb09bf | 2774 | static int __init init_PCI(void) |
ae0b78d0 | 2775 | { |
191260a0 | 2776 | memset(&epca_driver, 0, sizeof(epca_driver)); |
1da177e4 LT |
2777 | epca_driver.name = "epca"; |
2778 | epca_driver.id_table = epca_pci_tbl; | |
2779 | epca_driver.probe = epca_init_one; | |
2780 | ||
2781 | return pci_register_driver(&epca_driver); | |
f2cf8e25 | 2782 | } |
1da177e4 LT |
2783 | |
2784 | MODULE_LICENSE("GPL"); |