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 | |
72 | * a single lock. It's still pretty efficient. | |
73 | */ | |
34af946a | 74 | static DEFINE_SPINLOCK(epca_lock); |
f2cf8e25 | 75 | |
191260a0 AC |
76 | /* MAXBOARDS is typically 12, but ISA and EISA cards are restricted |
77 | to 7 below. */ | |
1da177e4 LT |
78 | static struct board_info boards[MAXBOARDS]; |
79 | ||
1da177e4 LT |
80 | static struct tty_driver *pc_driver; |
81 | static struct tty_driver *pc_info; | |
82 | ||
83 | /* ------------------ Begin Digi specific structures -------------------- */ | |
84 | ||
ae0b78d0 AD |
85 | /* |
86 | * digi_channels represents an array of structures that keep track of each | |
87 | * channel of the Digi product. Information such as transmit and receive | |
88 | * pointers, termio data, and signal definitions (DTR, CTS, etc ...) are stored | |
89 | * here. This structure is NOT used to overlay the cards physical channel | |
90 | * structure. | |
91 | */ | |
1da177e4 LT |
92 | static struct channel digi_channels[MAX_ALLOC]; |
93 | ||
ae0b78d0 AD |
94 | /* |
95 | * card_ptr is an array used to hold the address of the first channel structure | |
96 | * of each card. This array will hold the addresses of various channels located | |
97 | * in digi_channels. | |
98 | */ | |
1da177e4 LT |
99 | static struct channel *card_ptr[MAXCARDS]; |
100 | ||
101 | static struct timer_list epca_timer; | |
102 | ||
ae0b78d0 AD |
103 | /* |
104 | * Begin generic memory functions. These functions will be alias (point at) | |
105 | * more specific functions dependent on the board being configured. | |
106 | */ | |
f2cf8e25 AC |
107 | static void memwinon(struct board_info *b, unsigned int win); |
108 | static void memwinoff(struct board_info *b, unsigned int win); | |
109 | static void globalwinon(struct channel *ch); | |
110 | static void rxwinon(struct channel *ch); | |
111 | static void txwinon(struct channel *ch); | |
112 | static void memoff(struct channel *ch); | |
113 | static void assertgwinon(struct channel *ch); | |
114 | static void assertmemoff(struct channel *ch); | |
1da177e4 LT |
115 | |
116 | /* ---- Begin more 'specific' memory functions for cx_like products --- */ | |
117 | ||
f2cf8e25 AC |
118 | static void pcxem_memwinon(struct board_info *b, unsigned int win); |
119 | static void pcxem_memwinoff(struct board_info *b, unsigned int win); | |
120 | static void pcxem_globalwinon(struct channel *ch); | |
121 | static void pcxem_rxwinon(struct channel *ch); | |
122 | static void pcxem_txwinon(struct channel *ch); | |
123 | static void pcxem_memoff(struct channel *ch); | |
1da177e4 LT |
124 | |
125 | /* ------ Begin more 'specific' memory functions for the pcxe ------- */ | |
126 | ||
f2cf8e25 AC |
127 | static void pcxe_memwinon(struct board_info *b, unsigned int win); |
128 | static void pcxe_memwinoff(struct board_info *b, unsigned int win); | |
129 | static void pcxe_globalwinon(struct channel *ch); | |
130 | static void pcxe_rxwinon(struct channel *ch); | |
131 | static void pcxe_txwinon(struct channel *ch); | |
132 | static void pcxe_memoff(struct channel *ch); | |
1da177e4 LT |
133 | |
134 | /* ---- Begin more 'specific' memory functions for the pc64xe and pcxi ---- */ | |
135 | /* Note : pc64xe and pcxi share the same windowing routines */ | |
136 | ||
f2cf8e25 AC |
137 | static void pcxi_memwinon(struct board_info *b, unsigned int win); |
138 | static void pcxi_memwinoff(struct board_info *b, unsigned int win); | |
139 | static void pcxi_globalwinon(struct channel *ch); | |
140 | static void pcxi_rxwinon(struct channel *ch); | |
141 | static void pcxi_txwinon(struct channel *ch); | |
142 | static void pcxi_memoff(struct channel *ch); | |
1da177e4 LT |
143 | |
144 | /* - Begin 'specific' do nothing memory functions needed for some cards - */ | |
145 | ||
f2cf8e25 AC |
146 | static void dummy_memwinon(struct board_info *b, unsigned int win); |
147 | static void dummy_memwinoff(struct board_info *b, unsigned int win); | |
148 | static void dummy_globalwinon(struct channel *ch); | |
149 | static void dummy_rxwinon(struct channel *ch); | |
150 | static void dummy_txwinon(struct channel *ch); | |
151 | static void dummy_memoff(struct channel *ch); | |
152 | static void dummy_assertgwinon(struct channel *ch); | |
153 | static void dummy_assertmemoff(struct channel *ch); | |
1da177e4 | 154 | |
f2cf8e25 AC |
155 | static struct channel *verifyChannel(struct tty_struct *); |
156 | static void pc_sched_event(struct channel *, int); | |
1da177e4 LT |
157 | static void epca_error(int, char *); |
158 | static void pc_close(struct tty_struct *, struct file *); | |
159 | static void shutdown(struct channel *); | |
160 | static void pc_hangup(struct tty_struct *); | |
1da177e4 LT |
161 | static int pc_write_room(struct tty_struct *); |
162 | static int pc_chars_in_buffer(struct tty_struct *); | |
163 | static void pc_flush_buffer(struct tty_struct *); | |
164 | static void pc_flush_chars(struct tty_struct *); | |
165 | static int block_til_ready(struct tty_struct *, struct file *, | |
191260a0 | 166 | struct channel *); |
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 *); | |
176 | static void receive_data(struct channel *); | |
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 AC |
394 | if (tty) { |
395 | struct channel *ch = (struct channel *)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 LT |
421 | struct channel *ch; |
422 | unsigned long flags; | |
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 AC |
427 | ch = verifyChannel(tty); |
428 | if (ch != NULL) { | |
f2cf8e25 AC |
429 | spin_lock_irqsave(&epca_lock, flags); |
430 | if (tty_hung_up_p(filp)) { | |
431 | spin_unlock_irqrestore(&epca_lock, flags); | |
1da177e4 LT |
432 | return; |
433 | } | |
52d41738 | 434 | if (ch->port.count-- > 1) { |
f2cf8e25 | 435 | /* Begin channel is open more than once */ |
ae0b78d0 AD |
436 | /* |
437 | * Return without doing anything. Someone might still | |
438 | * be using the channel. | |
439 | */ | |
f2cf8e25 | 440 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 441 | return; |
ae0b78d0 | 442 | } |
1da177e4 | 443 | /* Port open only once go ahead with shutdown & reset */ |
52d41738 | 444 | BUG_ON(ch->port.count < 0); |
1da177e4 | 445 | |
ae0b78d0 AD |
446 | /* |
447 | * Let the rest of the driver know the channel is being closed. | |
448 | * This becomes important if an open is attempted before close | |
449 | * is finished. | |
450 | */ | |
52d41738 | 451 | ch->port.flags |= ASYNC_CLOSING; |
1da177e4 LT |
452 | tty->closing = 1; |
453 | ||
f2cf8e25 AC |
454 | spin_unlock_irqrestore(&epca_lock, flags); |
455 | ||
52d41738 | 456 | if (ch->port.flags & ASYNC_INITIALIZED) { |
191260a0 AC |
457 | /* Setup an event to indicate when the |
458 | transmit buffer empties */ | |
ae0b78d0 | 459 | setup_empty_event(tty, ch); |
191260a0 AC |
460 | /* 30 seconds timeout */ |
461 | tty_wait_until_sent(tty, 3000); | |
1da177e4 | 462 | } |
978e595f | 463 | pc_flush_buffer(tty); |
1da177e4 LT |
464 | |
465 | tty_ldisc_flush(tty); | |
466 | shutdown(ch); | |
f2cf8e25 AC |
467 | |
468 | spin_lock_irqsave(&epca_lock, flags); | |
1da177e4 LT |
469 | tty->closing = 0; |
470 | ch->event = 0; | |
52d41738 | 471 | ch->port.tty = NULL; |
f2cf8e25 | 472 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 473 | |
52d41738 | 474 | if (ch->port.blocked_open) { |
ae0b78d0 | 475 | if (ch->close_delay) |
1da177e4 | 476 | msleep_interruptible(jiffies_to_msecs(ch->close_delay)); |
52d41738 | 477 | wake_up_interruptible(&ch->port.open_wait); |
ae0b78d0 | 478 | } |
52d41738 | 479 | ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED | |
191260a0 | 480 | ASYNC_CLOSING); |
52d41738 | 481 | wake_up_interruptible(&ch->port.close_wait); |
ae0b78d0 AD |
482 | } |
483 | } | |
1da177e4 LT |
484 | |
485 | static void shutdown(struct channel *ch) | |
ae0b78d0 | 486 | { |
1da177e4 LT |
487 | unsigned long flags; |
488 | struct tty_struct *tty; | |
bc9a5154 | 489 | struct board_chan __iomem *bc; |
1da177e4 | 490 | |
52d41738 | 491 | if (!(ch->port.flags & ASYNC_INITIALIZED)) |
1da177e4 LT |
492 | return; |
493 | ||
f2cf8e25 | 494 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 495 | |
f2cf8e25 | 496 | globalwinon(ch); |
1da177e4 LT |
497 | bc = ch->brdchan; |
498 | ||
ae0b78d0 AD |
499 | /* |
500 | * In order for an event to be generated on the receipt of data the | |
501 | * idata flag must be set. Since we are shutting down, this is not | |
502 | * necessary clear this flag. | |
503 | */ | |
1da177e4 | 504 | if (bc) |
f2cf8e25 | 505 | writeb(0, &bc->idata); |
52d41738 | 506 | tty = ch->port.tty; |
1da177e4 | 507 | |
ae0b78d0 | 508 | /* If we're a modem control device and HUPCL is on, drop RTS & DTR. */ |
f2cf8e25 | 509 | if (tty->termios->c_cflag & HUPCL) { |
1da177e4 LT |
510 | ch->omodem &= ~(ch->m_rts | ch->m_dtr); |
511 | fepcmd(ch, SETMODEM, 0, ch->m_dtr | ch->m_rts, 10, 1); | |
512 | } | |
1da177e4 LT |
513 | memoff(ch); |
514 | ||
ae0b78d0 AD |
515 | /* |
516 | * The channel has officialy been closed. The next time it is opened it | |
517 | * will have to reinitialized. Set a flag to indicate this. | |
518 | */ | |
1da177e4 | 519 | /* Prevent future Digi programmed interrupts from coming active */ |
52d41738 | 520 | ch->port.flags &= ~ASYNC_INITIALIZED; |
f2cf8e25 | 521 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 | 522 | } |
1da177e4 LT |
523 | |
524 | static void pc_hangup(struct tty_struct *tty) | |
ae0b78d0 | 525 | { |
1da177e4 | 526 | struct channel *ch; |
ae0b78d0 AD |
527 | /* |
528 | * verifyChannel returns the channel from the tty struct if it is | |
529 | * valid. This serves as a sanity check. | |
530 | */ | |
191260a0 AC |
531 | ch = verifyChannel(tty); |
532 | if (ch != NULL) { | |
1da177e4 LT |
533 | unsigned long flags; |
534 | ||
978e595f | 535 | pc_flush_buffer(tty); |
1da177e4 LT |
536 | tty_ldisc_flush(tty); |
537 | shutdown(ch); | |
538 | ||
f2cf8e25 | 539 | spin_lock_irqsave(&epca_lock, flags); |
52d41738 | 540 | ch->port.tty = NULL; |
1da177e4 | 541 | ch->event = 0; |
52d41738 AC |
542 | ch->port.count = 0; |
543 | ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED); | |
f2cf8e25 | 544 | spin_unlock_irqrestore(&epca_lock, flags); |
52d41738 | 545 | wake_up_interruptible(&ch->port.open_wait); |
ae0b78d0 AD |
546 | } |
547 | } | |
1da177e4 | 548 | |
ae0b78d0 | 549 | static int pc_write(struct tty_struct *tty, |
191260a0 | 550 | const unsigned char *buf, int bytesAvailable) |
ae0b78d0 | 551 | { |
f2cf8e25 AC |
552 | unsigned int head, tail; |
553 | int dataLen; | |
554 | int size; | |
555 | int amountCopied; | |
1da177e4 LT |
556 | struct channel *ch; |
557 | unsigned long flags; | |
558 | int remain; | |
bc9a5154 | 559 | struct board_chan __iomem *bc; |
1da177e4 | 560 | |
ae0b78d0 AD |
561 | /* |
562 | * pc_write is primarily called directly by the kernel routine | |
563 | * tty_write (Though it can also be called by put_char) found in | |
564 | * tty_io.c. pc_write is passed a line discipline buffer where the data | |
565 | * to be written out is stored. The line discipline implementation | |
566 | * itself is done at the kernel level and is not brought into the | |
567 | * driver. | |
568 | */ | |
1da177e4 | 569 | |
ae0b78d0 AD |
570 | /* |
571 | * verifyChannel returns the channel from the tty struct if it is | |
572 | * valid. This serves as a sanity check. | |
573 | */ | |
191260a0 AC |
574 | ch = verifyChannel(tty); |
575 | if (ch == NULL) | |
1da177e4 LT |
576 | return 0; |
577 | ||
578 | /* Make a pointer to the channel data structure found on the board. */ | |
1da177e4 LT |
579 | bc = ch->brdchan; |
580 | size = ch->txbufsize; | |
1da177e4 | 581 | amountCopied = 0; |
1da177e4 | 582 | |
f2cf8e25 | 583 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
584 | globalwinon(ch); |
585 | ||
f2cf8e25 AC |
586 | head = readw(&bc->tin) & (size - 1); |
587 | tail = readw(&bc->tout); | |
1da177e4 | 588 | |
f2cf8e25 AC |
589 | if (tail != readw(&bc->tout)) |
590 | tail = readw(&bc->tout); | |
1da177e4 LT |
591 | tail &= (size - 1); |
592 | ||
ae0b78d0 AD |
593 | if (head >= tail) { |
594 | /* head has not wrapped */ | |
595 | /* | |
596 | * remain (much like dataLen above) represents the total amount | |
597 | * of space available on the card for data. Here dataLen | |
598 | * represents the space existing between the head pointer and | |
599 | * the end of buffer. This is important because a memcpy cannot | |
600 | * be told to automatically wrap around when it hits the buffer | |
601 | * end. | |
602 | */ | |
1da177e4 LT |
603 | dataLen = size - head; |
604 | remain = size - (head - tail) - 1; | |
ae0b78d0 AD |
605 | } else { |
606 | /* head has wrapped around */ | |
1da177e4 LT |
607 | remain = tail - head - 1; |
608 | dataLen = remain; | |
ae0b78d0 AD |
609 | } |
610 | /* | |
611 | * Check the space on the card. If we have more data than space; reduce | |
612 | * the amount of data to fit the space. | |
613 | */ | |
1da177e4 | 614 | bytesAvailable = min(remain, bytesAvailable); |
1da177e4 | 615 | txwinon(ch); |
ae0b78d0 AD |
616 | while (bytesAvailable > 0) { |
617 | /* there is data to copy onto card */ | |
1da177e4 | 618 | |
ae0b78d0 AD |
619 | /* |
620 | * If head is not wrapped, the below will make sure the first | |
621 | * data copy fills to the end of card buffer. | |
622 | */ | |
1da177e4 | 623 | dataLen = min(bytesAvailable, dataLen); |
bc9a5154 | 624 | memcpy_toio(ch->txptr + head, buf, dataLen); |
1da177e4 LT |
625 | buf += dataLen; |
626 | head += dataLen; | |
627 | amountCopied += dataLen; | |
628 | bytesAvailable -= dataLen; | |
629 | ||
f2cf8e25 | 630 | if (head >= size) { |
1da177e4 LT |
631 | head = 0; |
632 | dataLen = tail; | |
633 | } | |
ae0b78d0 | 634 | } |
1da177e4 LT |
635 | ch->statusflags |= TXBUSY; |
636 | globalwinon(ch); | |
f2cf8e25 | 637 | writew(head, &bc->tin); |
1da177e4 | 638 | |
f2cf8e25 | 639 | if ((ch->statusflags & LOWWAIT) == 0) { |
1da177e4 | 640 | ch->statusflags |= LOWWAIT; |
f2cf8e25 | 641 | writeb(1, &bc->ilow); |
1da177e4 LT |
642 | } |
643 | memoff(ch); | |
f2cf8e25 | 644 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
645 | return amountCopied; |
646 | } | |
1da177e4 | 647 | |
1da177e4 | 648 | static int pc_write_room(struct tty_struct *tty) |
ae0b78d0 | 649 | { |
191260a0 | 650 | int remain = 0; |
1da177e4 LT |
651 | struct channel *ch; |
652 | unsigned long flags; | |
653 | unsigned int head, tail; | |
bc9a5154 | 654 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
655 | /* |
656 | * verifyChannel returns the channel from the tty struct if it is | |
657 | * valid. This serves as a sanity check. | |
658 | */ | |
191260a0 AC |
659 | ch = verifyChannel(tty); |
660 | if (ch != NULL) { | |
f2cf8e25 | 661 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
662 | globalwinon(ch); |
663 | ||
664 | bc = ch->brdchan; | |
f2cf8e25 AC |
665 | head = readw(&bc->tin) & (ch->txbufsize - 1); |
666 | tail = readw(&bc->tout); | |
1da177e4 | 667 | |
f2cf8e25 AC |
668 | if (tail != readw(&bc->tout)) |
669 | tail = readw(&bc->tout); | |
1da177e4 LT |
670 | /* Wrap tail if necessary */ |
671 | tail &= (ch->txbufsize - 1); | |
191260a0 AC |
672 | remain = tail - head - 1; |
673 | if (remain < 0) | |
1da177e4 LT |
674 | remain += ch->txbufsize; |
675 | ||
f2cf8e25 | 676 | if (remain && (ch->statusflags & LOWWAIT) == 0) { |
1da177e4 | 677 | ch->statusflags |= LOWWAIT; |
f2cf8e25 | 678 | writeb(1, &bc->ilow); |
1da177e4 LT |
679 | } |
680 | memoff(ch); | |
f2cf8e25 | 681 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 682 | } |
1da177e4 LT |
683 | /* Return how much room is left on card */ |
684 | return remain; | |
ae0b78d0 | 685 | } |
1da177e4 LT |
686 | |
687 | static int pc_chars_in_buffer(struct tty_struct *tty) | |
ae0b78d0 | 688 | { |
1da177e4 LT |
689 | int chars; |
690 | unsigned int ctail, head, tail; | |
691 | int remain; | |
692 | unsigned long flags; | |
693 | struct channel *ch; | |
bc9a5154 | 694 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
695 | /* |
696 | * verifyChannel returns the channel from the tty struct if it is | |
697 | * valid. This serves as a sanity check. | |
698 | */ | |
191260a0 AC |
699 | ch = verifyChannel(tty); |
700 | if (ch == NULL) | |
ae0b78d0 | 701 | return 0; |
1da177e4 | 702 | |
f2cf8e25 | 703 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
704 | globalwinon(ch); |
705 | ||
706 | bc = ch->brdchan; | |
f2cf8e25 AC |
707 | tail = readw(&bc->tout); |
708 | head = readw(&bc->tin); | |
709 | ctail = readw(&ch->mailbox->cout); | |
1da177e4 | 710 | |
191260a0 AC |
711 | if (tail == head && readw(&ch->mailbox->cin) == ctail && |
712 | readb(&bc->tbusy) == 0) | |
1da177e4 | 713 | chars = 0; |
f2cf8e25 AC |
714 | else { /* Begin if some space on the card has been used */ |
715 | head = readw(&bc->tin) & (ch->txbufsize - 1); | |
1da177e4 | 716 | tail &= (ch->txbufsize - 1); |
ae0b78d0 AD |
717 | /* |
718 | * The logic here is basically opposite of the above | |
719 | * pc_write_room here we are finding the amount of bytes in the | |
720 | * buffer filled. Not the amount of bytes empty. | |
721 | */ | |
191260a0 AC |
722 | remain = tail - head - 1; |
723 | if (remain < 0) | |
1da177e4 | 724 | remain += ch->txbufsize; |
1da177e4 | 725 | chars = (int)(ch->txbufsize - remain); |
ae0b78d0 AD |
726 | /* |
727 | * Make it possible to wakeup anything waiting for output in | |
728 | * tty_ioctl.c, etc. | |
729 | * | |
730 | * If not already set. Setup an event to indicate when the | |
731 | * transmit buffer empties. | |
732 | */ | |
1da177e4 | 733 | if (!(ch->statusflags & EMPTYWAIT)) |
191260a0 | 734 | setup_empty_event(tty, ch); |
1da177e4 | 735 | } /* End if some space on the card has been used */ |
1da177e4 | 736 | memoff(ch); |
f2cf8e25 | 737 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 738 | /* Return number of characters residing on card. */ |
ae0b78d0 AD |
739 | return chars; |
740 | } | |
1da177e4 LT |
741 | |
742 | static void pc_flush_buffer(struct tty_struct *tty) | |
ae0b78d0 | 743 | { |
1da177e4 LT |
744 | unsigned int tail; |
745 | unsigned long flags; | |
746 | struct channel *ch; | |
bc9a5154 | 747 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
748 | /* |
749 | * verifyChannel returns the channel from the tty struct if it is | |
750 | * valid. This serves as a sanity check. | |
751 | */ | |
191260a0 AC |
752 | ch = verifyChannel(tty); |
753 | if (ch == NULL) | |
1da177e4 LT |
754 | return; |
755 | ||
f2cf8e25 | 756 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 757 | globalwinon(ch); |
1da177e4 | 758 | bc = ch->brdchan; |
f2cf8e25 | 759 | tail = readw(&bc->tout); |
1da177e4 | 760 | /* Have FEP move tout pointer; effectively flushing transmit buffer */ |
1da177e4 | 761 | fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0); |
1da177e4 | 762 | memoff(ch); |
f2cf8e25 | 763 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 764 | tty_wakeup(tty); |
ae0b78d0 | 765 | } |
1da177e4 LT |
766 | |
767 | static void pc_flush_chars(struct tty_struct *tty) | |
ae0b78d0 AD |
768 | { |
769 | struct channel *ch; | |
770 | /* | |
771 | * verifyChannel returns the channel from the tty struct if it is | |
772 | * valid. This serves as a sanity check. | |
773 | */ | |
191260a0 AC |
774 | ch = verifyChannel(tty); |
775 | if (ch != NULL) { | |
1da177e4 | 776 | unsigned long flags; |
f2cf8e25 | 777 | spin_lock_irqsave(&epca_lock, flags); |
ae0b78d0 AD |
778 | /* |
779 | * If not already set and the transmitter is busy setup an | |
780 | * event to indicate when the transmit empties. | |
781 | */ | |
191260a0 AC |
782 | if ((ch->statusflags & TXBUSY) && |
783 | !(ch->statusflags & EMPTYWAIT)) | |
784 | setup_empty_event(tty, ch); | |
f2cf8e25 | 785 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 786 | } |
ae0b78d0 | 787 | } |
1da177e4 | 788 | |
ae0b78d0 | 789 | static int block_til_ready(struct tty_struct *tty, |
191260a0 | 790 | struct file *filp, struct channel *ch) |
ae0b78d0 | 791 | { |
191260a0 | 792 | DECLARE_WAITQUEUE(wait, current); |
ae0b78d0 | 793 | int retval, do_clocal = 0; |
1da177e4 LT |
794 | unsigned long flags; |
795 | ||
f2cf8e25 | 796 | if (tty_hung_up_p(filp)) { |
52d41738 | 797 | if (ch->port.flags & ASYNC_HUP_NOTIFY) |
1da177e4 LT |
798 | retval = -EAGAIN; |
799 | else | |
ae0b78d0 AD |
800 | retval = -ERESTARTSYS; |
801 | return retval; | |
1da177e4 LT |
802 | } |
803 | ||
ae0b78d0 AD |
804 | /* |
805 | * If the device is in the middle of being closed, then block until | |
806 | * it's done, and then try again. | |
807 | */ | |
52d41738 AC |
808 | if (ch->port.flags & ASYNC_CLOSING) { |
809 | interruptible_sleep_on(&ch->port.close_wait); | |
1da177e4 | 810 | |
52d41738 | 811 | if (ch->port.flags & ASYNC_HUP_NOTIFY) |
1da177e4 LT |
812 | return -EAGAIN; |
813 | else | |
814 | return -ERESTARTSYS; | |
815 | } | |
816 | ||
f2cf8e25 | 817 | if (filp->f_flags & O_NONBLOCK) { |
ae0b78d0 AD |
818 | /* |
819 | * If non-blocking mode is set, then make the check up front | |
820 | * and then exit. | |
821 | */ | |
52d41738 | 822 | ch->port.flags |= ASYNC_NORMAL_ACTIVE; |
1da177e4 LT |
823 | return 0; |
824 | } | |
1da177e4 LT |
825 | if (tty->termios->c_cflag & CLOCAL) |
826 | do_clocal = 1; | |
f2cf8e25 | 827 | /* Block waiting for the carrier detect and the line to become free */ |
ae0b78d0 | 828 | |
1da177e4 | 829 | retval = 0; |
52d41738 | 830 | add_wait_queue(&ch->port.open_wait, &wait); |
1da177e4 | 831 | |
f2cf8e25 | 832 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
833 | /* We dec count so that pc_close will know when to free things */ |
834 | if (!tty_hung_up_p(filp)) | |
52d41738 AC |
835 | ch->port.count--; |
836 | ch->port.blocked_open++; | |
ae0b78d0 | 837 | while (1) { |
1da177e4 | 838 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 839 | if (tty_hung_up_p(filp) || |
52d41738 AC |
840 | !(ch->port.flags & ASYNC_INITIALIZED)) { |
841 | if (ch->port.flags & ASYNC_HUP_NOTIFY) | |
1da177e4 LT |
842 | retval = -EAGAIN; |
843 | else | |
ae0b78d0 | 844 | retval = -ERESTARTSYS; |
1da177e4 LT |
845 | break; |
846 | } | |
52d41738 | 847 | if (!(ch->port.flags & ASYNC_CLOSING) && |
1da177e4 LT |
848 | (do_clocal || (ch->imodem & ch->dcd))) |
849 | break; | |
f2cf8e25 | 850 | if (signal_pending(current)) { |
1da177e4 LT |
851 | retval = -ERESTARTSYS; |
852 | break; | |
853 | } | |
f2cf8e25 | 854 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
855 | /* |
856 | * Allow someone else to be scheduled. We will occasionally go | |
857 | * through this loop until one of the above conditions change. | |
858 | * The below schedule call will allow other processes to enter | |
859 | * and prevent this loop from hogging the cpu. | |
860 | */ | |
1da177e4 | 861 | schedule(); |
f2cf8e25 | 862 | spin_lock_irqsave(&epca_lock, flags); |
ae0b78d0 | 863 | } |
1da177e4 | 864 | |
cc0a8fbb | 865 | __set_current_state(TASK_RUNNING); |
52d41738 | 866 | remove_wait_queue(&ch->port.open_wait, &wait); |
1da177e4 | 867 | if (!tty_hung_up_p(filp)) |
52d41738 AC |
868 | ch->port.count++; |
869 | ch->port.blocked_open--; | |
1da177e4 | 870 | |
f2cf8e25 AC |
871 | spin_unlock_irqrestore(&epca_lock, flags); |
872 | ||
1da177e4 LT |
873 | if (retval) |
874 | return retval; | |
875 | ||
52d41738 | 876 | ch->port.flags |= ASYNC_NORMAL_ACTIVE; |
1da177e4 | 877 | return 0; |
ae0b78d0 | 878 | } |
1da177e4 | 879 | |
191260a0 | 880 | static int pc_open(struct tty_struct *tty, struct file *filp) |
ae0b78d0 | 881 | { |
1da177e4 LT |
882 | struct channel *ch; |
883 | unsigned long flags; | |
884 | int line, retval, boardnum; | |
bc9a5154 | 885 | struct board_chan __iomem *bc; |
f2cf8e25 | 886 | unsigned int head; |
1da177e4 LT |
887 | |
888 | line = tty->index; | |
f2cf8e25 AC |
889 | if (line < 0 || line >= nbdevs) |
890 | return -ENODEV; | |
1da177e4 LT |
891 | |
892 | ch = &digi_channels[line]; | |
893 | boardnum = ch->boardnum; | |
894 | ||
895 | /* Check status of board configured in system. */ | |
896 | ||
ae0b78d0 AD |
897 | /* |
898 | * I check to see if the epca_setup routine detected an user error. It | |
899 | * might be better to put this in pc_init, but for the moment it goes | |
900 | * here. | |
901 | */ | |
f2cf8e25 | 902 | if (invalid_lilo_config) { |
1da177e4 | 903 | if (setup_error_code & INVALID_BOARD_TYPE) |
f2cf8e25 | 904 | printk(KERN_ERR "epca: pc_open: Invalid board type specified in kernel options.\n"); |
1da177e4 | 905 | if (setup_error_code & INVALID_NUM_PORTS) |
f2cf8e25 | 906 | printk(KERN_ERR "epca: pc_open: Invalid number of ports specified in kernel options.\n"); |
1da177e4 | 907 | if (setup_error_code & INVALID_MEM_BASE) |
f2cf8e25 | 908 | printk(KERN_ERR "epca: pc_open: Invalid board memory address specified in kernel options.\n"); |
1da177e4 | 909 | if (setup_error_code & INVALID_PORT_BASE) |
f2cf8e25 | 910 | printk(KERN_ERR "epca; pc_open: Invalid board port address specified in kernel options.\n"); |
1da177e4 | 911 | if (setup_error_code & INVALID_BOARD_STATUS) |
f2cf8e25 | 912 | printk(KERN_ERR "epca: pc_open: Invalid board status specified in kernel options.\n"); |
1da177e4 | 913 | if (setup_error_code & INVALID_ALTPIN) |
f2cf8e25 | 914 | printk(KERN_ERR "epca: pc_open: Invalid board altpin specified in kernel options;\n"); |
1da177e4 | 915 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
f2cf8e25 | 916 | return -ENODEV; |
1da177e4 | 917 | } |
f2cf8e25 | 918 | if (boardnum >= num_cards || boards[boardnum].status == DISABLED) { |
1da177e4 LT |
919 | tty->driver_data = NULL; /* Mark this device as 'down' */ |
920 | return(-ENODEV); | |
921 | } | |
ae0b78d0 | 922 | |
11fb09bf HH |
923 | bc = ch->brdchan; |
924 | if (bc == NULL) { | |
1da177e4 | 925 | tty->driver_data = NULL; |
f2cf8e25 | 926 | return -ENODEV; |
1da177e4 LT |
927 | } |
928 | ||
f2cf8e25 | 929 | spin_lock_irqsave(&epca_lock, flags); |
ae0b78d0 AD |
930 | /* |
931 | * Every time a channel is opened, increment a counter. This is | |
932 | * necessary because we do not wish to flush and shutdown the channel | |
933 | * until the last app holding the channel open, closes it. | |
934 | */ | |
52d41738 | 935 | ch->port.count++; |
ae0b78d0 AD |
936 | /* |
937 | * Set a kernel structures pointer to our local channel structure. This | |
938 | * way we can get to it when passed only a tty struct. | |
939 | */ | |
1da177e4 | 940 | tty->driver_data = ch; |
ae0b78d0 AD |
941 | /* |
942 | * If this is the first time the channel has been opened, initialize | |
943 | * the tty->termios struct otherwise let pc_close handle it. | |
944 | */ | |
1da177e4 LT |
945 | globalwinon(ch); |
946 | ch->statusflags = 0; | |
947 | ||
948 | /* Save boards current modem status */ | |
bc9a5154 | 949 | ch->imodem = readb(&bc->mstat); |
1da177e4 | 950 | |
ae0b78d0 AD |
951 | /* |
952 | * Set receive head and tail ptrs to each other. This indicates no data | |
953 | * available to read. | |
954 | */ | |
f2cf8e25 AC |
955 | head = readw(&bc->rin); |
956 | writew(head, &bc->rout); | |
1da177e4 LT |
957 | |
958 | /* Set the channels associated tty structure */ | |
52d41738 | 959 | ch->port.tty = tty; |
1da177e4 | 960 | |
ae0b78d0 AD |
961 | /* |
962 | * The below routine generally sets up parity, baud, flow control | |
963 | * issues, etc.... It effect both control flags and input flags. | |
964 | */ | |
191260a0 | 965 | epcaparam(tty, ch); |
52d41738 | 966 | ch->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 967 | memoff(ch); |
f2cf8e25 | 968 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
969 | |
970 | retval = block_til_ready(tty, filp, ch); | |
971 | if (retval) | |
1da177e4 | 972 | return retval; |
ae0b78d0 AD |
973 | /* |
974 | * Set this again in case a hangup set it to zero while this open() was | |
975 | * waiting for the line... | |
976 | */ | |
f2cf8e25 | 977 | spin_lock_irqsave(&epca_lock, flags); |
52d41738 | 978 | ch->port.tty = tty; |
1da177e4 | 979 | globalwinon(ch); |
1da177e4 | 980 | /* Enable Digi Data events */ |
f2cf8e25 | 981 | writeb(1, &bc->idata); |
1da177e4 | 982 | memoff(ch); |
f2cf8e25 | 983 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 | 984 | return 0; |
ae0b78d0 | 985 | } |
1da177e4 | 986 | |
1da177e4 | 987 | static int __init epca_module_init(void) |
ae0b78d0 | 988 | { |
f2cf8e25 | 989 | return pc_init(); |
1da177e4 | 990 | } |
1da177e4 | 991 | module_init(epca_module_init); |
1da177e4 | 992 | |
1da177e4 | 993 | static struct pci_driver epca_driver; |
1da177e4 LT |
994 | |
995 | static void __exit epca_module_exit(void) | |
996 | { | |
1da177e4 LT |
997 | int count, crd; |
998 | struct board_info *bd; | |
999 | struct channel *ch; | |
1da177e4 LT |
1000 | |
1001 | del_timer_sync(&epca_timer); | |
1002 | ||
191260a0 AC |
1003 | if (tty_unregister_driver(pc_driver) || |
1004 | tty_unregister_driver(pc_info)) { | |
f2cf8e25 | 1005 | printk(KERN_WARNING "epca: cleanup_module failed to un-register tty driver\n"); |
1da177e4 LT |
1006 | return; |
1007 | } | |
1008 | put_tty_driver(pc_driver); | |
1009 | put_tty_driver(pc_info); | |
1010 | ||
ae0b78d0 | 1011 | for (crd = 0; crd < num_cards; crd++) { |
1da177e4 | 1012 | bd = &boards[crd]; |
ae0b78d0 | 1013 | if (!bd) { /* sanity check */ |
1da177e4 LT |
1014 | printk(KERN_ERR "<Error> - Digi : cleanup_module failed\n"); |
1015 | return; | |
ae0b78d0 | 1016 | } |
f2cf8e25 | 1017 | ch = card_ptr[crd]; |
ae0b78d0 | 1018 | for (count = 0; count < bd->numports; count++, ch++) { |
52d41738 AC |
1019 | if (ch && ch->port.tty) |
1020 | tty_hangup(ch->port.tty); | |
ae0b78d0 AD |
1021 | } |
1022 | } | |
1023 | pci_unregister_driver(&epca_driver); | |
1da177e4 LT |
1024 | } |
1025 | module_exit(epca_module_exit); | |
1da177e4 | 1026 | |
b68e31d0 | 1027 | static const struct tty_operations pc_ops = { |
1da177e4 LT |
1028 | .open = pc_open, |
1029 | .close = pc_close, | |
1030 | .write = pc_write, | |
1031 | .write_room = pc_write_room, | |
1032 | .flush_buffer = pc_flush_buffer, | |
1033 | .chars_in_buffer = pc_chars_in_buffer, | |
1034 | .flush_chars = pc_flush_chars, | |
1da177e4 LT |
1035 | .ioctl = pc_ioctl, |
1036 | .set_termios = pc_set_termios, | |
1037 | .stop = pc_stop, | |
1038 | .start = pc_start, | |
1039 | .throttle = pc_throttle, | |
1040 | .unthrottle = pc_unthrottle, | |
1041 | .hangup = pc_hangup, | |
dcbf1280 | 1042 | .break_ctl = pc_send_break |
1da177e4 LT |
1043 | }; |
1044 | ||
191260a0 | 1045 | static int info_open(struct tty_struct *tty, struct file *filp) |
1da177e4 LT |
1046 | { |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | static struct tty_operations info_ops = { | |
1051 | .open = info_open, | |
1052 | .ioctl = info_ioctl, | |
1053 | }; | |
1054 | ||
f2cf8e25 | 1055 | static int __init pc_init(void) |
ae0b78d0 | 1056 | { |
1da177e4 LT |
1057 | int crd; |
1058 | struct board_info *bd; | |
1059 | unsigned char board_id = 0; | |
dabad056 | 1060 | int err = -ENOMEM; |
1da177e4 | 1061 | |
1da177e4 LT |
1062 | int pci_boards_found, pci_count; |
1063 | ||
1064 | pci_count = 0; | |
1da177e4 LT |
1065 | |
1066 | pc_driver = alloc_tty_driver(MAX_ALLOC); | |
1067 | if (!pc_driver) | |
dabad056 | 1068 | goto out1; |
1da177e4 LT |
1069 | |
1070 | pc_info = alloc_tty_driver(MAX_ALLOC); | |
dabad056 AM |
1071 | if (!pc_info) |
1072 | goto out2; | |
1da177e4 | 1073 | |
ae0b78d0 AD |
1074 | /* |
1075 | * If epca_setup has not been ran by LILO set num_cards to defaults; | |
1076 | * copy board structure defined by digiConfig into drivers board | |
1077 | * structure. Note : If LILO has ran epca_setup then epca_setup will | |
1078 | * handle defining num_cards as well as copying the data into the board | |
1079 | * structure. | |
1080 | */ | |
1081 | if (!liloconfig) { | |
1082 | /* driver has been configured via. epcaconfig */ | |
1da177e4 LT |
1083 | nbdevs = NBDEVS; |
1084 | num_cards = NUMCARDS; | |
ae0b78d0 AD |
1085 | memcpy(&boards, &static_boards, |
1086 | sizeof(struct board_info) * NUMCARDS); | |
1087 | } | |
1da177e4 | 1088 | |
ae0b78d0 AD |
1089 | /* |
1090 | * Note : If lilo was used to configure the driver and the ignore | |
1091 | * epcaconfig option was choosen (digiepca=2) then nbdevs and num_cards | |
1092 | * will equal 0 at this point. This is okay; PCI cards will still be | |
1093 | * picked up if detected. | |
1094 | */ | |
1da177e4 | 1095 | |
ae0b78d0 AD |
1096 | /* |
1097 | * Set up interrupt, we will worry about memory allocation in | |
1098 | * post_fep_init. | |
1099 | */ | |
191260a0 | 1100 | printk(KERN_INFO "DIGI epca driver version %s loaded.\n", VERSION); |
1da177e4 | 1101 | |
ae0b78d0 AD |
1102 | /* |
1103 | * NOTE : This code assumes that the number of ports found in the | |
1104 | * boards array is correct. This could be wrong if the card in question | |
1105 | * is PCI (And therefore has no ports entry in the boards structure.) | |
1106 | * The rest of the information will be valid for PCI because the | |
1107 | * beginning of pc_init scans for PCI and determines i/o and base | |
1108 | * memory addresses. I am not sure if it is possible to read the number | |
1109 | * of ports supported by the card prior to it being booted (Since that | |
1110 | * is the state it is in when pc_init is run). Because it is not | |
1111 | * possible to query the number of supported ports until after the card | |
1112 | * has booted; we are required to calculate the card_ptrs as the card | |
1113 | * is initialized (Inside post_fep_init). The negative thing about this | |
1114 | * approach is that digiDload's call to GET_INFO will have a bad port | |
1115 | * value. (Since this is called prior to post_fep_init.) | |
1116 | */ | |
1da177e4 | 1117 | pci_boards_found = 0; |
ae0b78d0 | 1118 | if (num_cards < MAXBOARDS) |
1da177e4 LT |
1119 | pci_boards_found += init_PCI(); |
1120 | num_cards += pci_boards_found; | |
1121 | ||
1da177e4 | 1122 | pc_driver->owner = THIS_MODULE; |
ae0b78d0 AD |
1123 | pc_driver->name = "ttyD"; |
1124 | pc_driver->major = DIGI_MAJOR; | |
1da177e4 LT |
1125 | pc_driver->minor_start = 0; |
1126 | pc_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
1127 | pc_driver->subtype = SERIAL_TYPE_NORMAL; | |
1128 | pc_driver->init_termios = tty_std_termios; | |
1129 | pc_driver->init_termios.c_iflag = 0; | |
1130 | pc_driver->init_termios.c_oflag = 0; | |
1131 | pc_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; | |
1132 | pc_driver->init_termios.c_lflag = 0; | |
606d099c AC |
1133 | pc_driver->init_termios.c_ispeed = 9600; |
1134 | pc_driver->init_termios.c_ospeed = 9600; | |
dcbf1280 | 1135 | pc_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; |
1da177e4 LT |
1136 | tty_set_operations(pc_driver, &pc_ops); |
1137 | ||
1138 | pc_info->owner = THIS_MODULE; | |
1139 | pc_info->name = "digi_ctl"; | |
1140 | pc_info->major = DIGIINFOMAJOR; | |
1141 | pc_info->minor_start = 0; | |
1142 | pc_info->type = TTY_DRIVER_TYPE_SERIAL; | |
1143 | pc_info->subtype = SERIAL_TYPE_INFO; | |
1144 | pc_info->init_termios = tty_std_termios; | |
1145 | pc_info->init_termios.c_iflag = 0; | |
1146 | pc_info->init_termios.c_oflag = 0; | |
1147 | pc_info->init_termios.c_lflag = 0; | |
1148 | pc_info->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; | |
606d099c AC |
1149 | pc_info->init_termios.c_ispeed = 9600; |
1150 | pc_info->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
1151 | pc_info->flags = TTY_DRIVER_REAL_RAW; |
1152 | tty_set_operations(pc_info, &info_ops); | |
1153 | ||
1154 | ||
ae0b78d0 AD |
1155 | for (crd = 0; crd < num_cards; crd++) { |
1156 | /* | |
1157 | * This is where the appropriate memory handlers for the | |
1158 | * hardware is set. Everything at runtime blindly jumps through | |
1159 | * these vectors. | |
1160 | */ | |
1da177e4 LT |
1161 | |
1162 | /* defined in epcaconfig.h */ | |
1163 | bd = &boards[crd]; | |
1164 | ||
ae0b78d0 AD |
1165 | switch (bd->type) { |
1166 | case PCXEM: | |
1167 | case EISAXEM: | |
1168 | bd->memwinon = pcxem_memwinon; | |
1169 | bd->memwinoff = pcxem_memwinoff; | |
1170 | bd->globalwinon = pcxem_globalwinon; | |
1171 | bd->txwinon = pcxem_txwinon; | |
1172 | bd->rxwinon = pcxem_rxwinon; | |
1173 | bd->memoff = pcxem_memoff; | |
1174 | bd->assertgwinon = dummy_assertgwinon; | |
1175 | bd->assertmemoff = dummy_assertmemoff; | |
1da177e4 LT |
1176 | break; |
1177 | ||
ae0b78d0 AD |
1178 | case PCIXEM: |
1179 | case PCIXRJ: | |
1180 | case PCIXR: | |
1181 | bd->memwinon = dummy_memwinon; | |
1182 | bd->memwinoff = dummy_memwinoff; | |
1183 | bd->globalwinon = dummy_globalwinon; | |
1184 | bd->txwinon = dummy_txwinon; | |
1185 | bd->rxwinon = dummy_rxwinon; | |
1186 | bd->memoff = dummy_memoff; | |
1187 | bd->assertgwinon = dummy_assertgwinon; | |
1188 | bd->assertmemoff = dummy_assertmemoff; | |
1189 | break; | |
1da177e4 | 1190 | |
ae0b78d0 AD |
1191 | case PCXE: |
1192 | case PCXEVE: | |
1193 | bd->memwinon = pcxe_memwinon; | |
1194 | bd->memwinoff = pcxe_memwinoff; | |
1195 | bd->globalwinon = pcxe_globalwinon; | |
1196 | bd->txwinon = pcxe_txwinon; | |
1197 | bd->rxwinon = pcxe_rxwinon; | |
1198 | bd->memoff = pcxe_memoff; | |
1199 | bd->assertgwinon = dummy_assertgwinon; | |
1200 | bd->assertmemoff = dummy_assertmemoff; | |
1201 | break; | |
1da177e4 | 1202 | |
ae0b78d0 AD |
1203 | case PCXI: |
1204 | case PC64XE: | |
1205 | bd->memwinon = pcxi_memwinon; | |
1206 | bd->memwinoff = pcxi_memwinoff; | |
1207 | bd->globalwinon = pcxi_globalwinon; | |
1208 | bd->txwinon = pcxi_txwinon; | |
1209 | bd->rxwinon = pcxi_rxwinon; | |
1210 | bd->memoff = pcxi_memoff; | |
1211 | bd->assertgwinon = pcxi_assertgwinon; | |
1212 | bd->assertmemoff = pcxi_assertmemoff; | |
1213 | break; | |
1da177e4 | 1214 | |
ae0b78d0 | 1215 | default: |
1da177e4 | 1216 | break; |
ae0b78d0 | 1217 | } |
1da177e4 | 1218 | |
ae0b78d0 AD |
1219 | /* |
1220 | * Some cards need a memory segment to be defined for use in | |
1221 | * transmit and receive windowing operations. These boards are | |
1222 | * listed in the below switch. In the case of the XI the amount | |
1223 | * of memory on the board is variable so the memory_seg is also | |
1224 | * variable. This code determines what they segment should be. | |
1225 | */ | |
1226 | switch (bd->type) { | |
1227 | case PCXE: | |
1228 | case PCXEVE: | |
1229 | case PC64XE: | |
1230 | bd->memory_seg = 0xf000; | |
1231 | break; | |
1da177e4 | 1232 | |
ae0b78d0 AD |
1233 | case PCXI: |
1234 | board_id = inb((int)bd->port); | |
1235 | if ((board_id & 0x1) == 0x1) { | |
1236 | /* it's an XI card */ | |
1237 | /* Is it a 64K board */ | |
1238 | if ((board_id & 0x30) == 0) | |
1239 | bd->memory_seg = 0xf000; | |
1240 | ||
1241 | /* Is it a 128K board */ | |
1242 | if ((board_id & 0x30) == 0x10) | |
1243 | bd->memory_seg = 0xe000; | |
1244 | ||
1245 | /* Is is a 256K board */ | |
1246 | if ((board_id & 0x30) == 0x20) | |
1247 | bd->memory_seg = 0xc000; | |
1248 | ||
1249 | /* Is it a 512K board */ | |
1250 | if ((board_id & 0x30) == 0x30) | |
1251 | bd->memory_seg = 0x8000; | |
1252 | } else | |
191260a0 | 1253 | printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n", (int)bd->port); |
ae0b78d0 AD |
1254 | break; |
1255 | } | |
1256 | } | |
1da177e4 | 1257 | |
dabad056 AM |
1258 | err = tty_register_driver(pc_driver); |
1259 | if (err) { | |
1260 | printk(KERN_ERR "Couldn't register Digi PC/ driver"); | |
1261 | goto out3; | |
1262 | } | |
1da177e4 | 1263 | |
dabad056 AM |
1264 | err = tty_register_driver(pc_info); |
1265 | if (err) { | |
1266 | printk(KERN_ERR "Couldn't register Digi PC/ info "); | |
1267 | goto out4; | |
1268 | } | |
1da177e4 | 1269 | |
ae0b78d0 | 1270 | /* Start up the poller to check for events on all enabled boards */ |
1da177e4 LT |
1271 | init_timer(&epca_timer); |
1272 | epca_timer.function = epcapoll; | |
1273 | mod_timer(&epca_timer, jiffies + HZ/25); | |
1da177e4 LT |
1274 | return 0; |
1275 | ||
dabad056 AM |
1276 | out4: |
1277 | tty_unregister_driver(pc_driver); | |
1278 | out3: | |
1279 | put_tty_driver(pc_info); | |
1280 | out2: | |
1281 | put_tty_driver(pc_driver); | |
1282 | out1: | |
1283 | return err; | |
ae0b78d0 | 1284 | } |
1da177e4 LT |
1285 | |
1286 | static void post_fep_init(unsigned int crd) | |
ae0b78d0 | 1287 | { |
1da177e4 | 1288 | int i; |
bc9a5154 AV |
1289 | void __iomem *memaddr; |
1290 | struct global_data __iomem *gd; | |
1da177e4 | 1291 | struct board_info *bd; |
bc9a5154 | 1292 | struct board_chan __iomem *bc; |
ae0b78d0 AD |
1293 | struct channel *ch; |
1294 | int shrinkmem = 0, lowwater; | |
1da177e4 | 1295 | |
ae0b78d0 AD |
1296 | /* |
1297 | * This call is made by the user via. the ioctl call DIGI_INIT. It is | |
1298 | * responsible for setting up all the card specific stuff. | |
1299 | */ | |
1300 | bd = &boards[crd]; | |
1da177e4 | 1301 | |
ae0b78d0 AD |
1302 | /* |
1303 | * If this is a PCI board, get the port info. Remember PCI cards do not | |
1304 | * have entries into the epcaconfig.h file, so we can't get the number | |
1305 | * of ports from it. Unfortunetly, this means that anyone doing a | |
1306 | * DIGI_GETINFO before the board has booted will get an invalid number | |
1307 | * of ports returned (It should return 0). Calls to DIGI_GETINFO after | |
1308 | * DIGI_INIT has been called will return the proper values. | |
1309 | */ | |
f2cf8e25 | 1310 | if (bd->type >= PCIXEM) { /* Begin get PCI number of ports */ |
ae0b78d0 AD |
1311 | /* |
1312 | * Below we use XEMPORTS as a memory offset regardless of which | |
1313 | * PCI card it is. This is because all of the supported PCI | |
1314 | * cards have the same memory offset for the channel data. This | |
1315 | * will have to be changed if we ever develop a PCI/XE card. | |
1316 | * NOTE : The FEP manual states that the port offset is 0xC22 | |
1317 | * as opposed to 0xC02. This is only true for PC/XE, and PC/XI | |
1318 | * cards; not for the XEM, or CX series. On the PCI cards the | |
1319 | * number of ports is determined by reading a ID PROM located | |
1320 | * in the box attached to the card. The card can then determine | |
1321 | * the index the id to determine the number of ports available. | |
1322 | * (FYI - The id should be located at 0x1ac (And may use up to | |
1323 | * 4 bytes if the box in question is a XEM or CX)). | |
1324 | */ | |
f2cf8e25 AC |
1325 | /* PCI cards are already remapped at this point ISA are not */ |
1326 | bd->numports = readw(bd->re_map_membase + XEMPORTS); | |
191260a0 | 1327 | epcaassert(bd->numports <= 64, "PCI returned a invalid number of ports"); |
1da177e4 | 1328 | nbdevs += (bd->numports); |
f2cf8e25 AC |
1329 | } else { |
1330 | /* Fix up the mappings for ISA/EISA etc */ | |
1331 | /* FIXME: 64K - can we be smarter ? */ | |
191260a0 | 1332 | bd->re_map_membase = ioremap_nocache(bd->membase, 0x10000); |
f2cf8e25 | 1333 | } |
1da177e4 LT |
1334 | |
1335 | if (crd != 0) | |
1336 | card_ptr[crd] = card_ptr[crd-1] + boards[crd-1].numports; | |
1337 | else | |
1338 | card_ptr[crd] = &digi_channels[crd]; /* <- For card 0 only */ | |
1339 | ||
1340 | ch = card_ptr[crd]; | |
1da177e4 LT |
1341 | epcaassert(ch <= &digi_channels[nbdevs - 1], "ch out of range"); |
1342 | ||
f2cf8e25 | 1343 | memaddr = bd->re_map_membase; |
1da177e4 | 1344 | |
ae0b78d0 AD |
1345 | /* |
1346 | * The below assignment will set bc to point at the BEGINING of the | |
1347 | * cards channel structures. For 1 card there will be between 8 and 64 | |
1348 | * of these structures. | |
1349 | */ | |
bc9a5154 | 1350 | bc = memaddr + CHANSTRUCT; |
1da177e4 | 1351 | |
ae0b78d0 AD |
1352 | /* |
1353 | * The below assignment will set gd to point at the BEGINING of global | |
1354 | * memory address 0xc00. The first data in that global memory actually | |
1355 | * starts at address 0xc1a. The command in pointer begins at 0xd10. | |
1356 | */ | |
bc9a5154 | 1357 | gd = memaddr + GLOBAL; |
1da177e4 | 1358 | |
ae0b78d0 AD |
1359 | /* |
1360 | * XEPORTS (address 0xc22) points at the number of channels the card | |
1361 | * supports. (For 64XE, XI, XEM, and XR use 0xc02) | |
1362 | */ | |
191260a0 AC |
1363 | if ((bd->type == PCXEVE || bd->type == PCXE) && |
1364 | (readw(memaddr + XEPORTS) < 3)) | |
1da177e4 LT |
1365 | shrinkmem = 1; |
1366 | if (bd->type < PCIXEM) | |
1367 | if (!request_region((int)bd->port, 4, board_desc[bd->type])) | |
ae0b78d0 | 1368 | return; |
1da177e4 LT |
1369 | memwinon(bd, 0); |
1370 | ||
ae0b78d0 AD |
1371 | /* |
1372 | * Remember ch is the main drivers channels structure, while bc is the | |
1373 | * cards channel structure. | |
1374 | */ | |
1375 | for (i = 0; i < bd->numports; i++, ch++, bc++) { | |
f2cf8e25 | 1376 | unsigned long flags; |
bc9a5154 | 1377 | u16 tseg, rseg; |
1da177e4 | 1378 | |
9ae7b08a | 1379 | tty_port_init(&ch->port); |
ae0b78d0 AD |
1380 | ch->brdchan = bc; |
1381 | ch->mailbox = gd; | |
c4028958 | 1382 | INIT_WORK(&ch->tqueue, do_softint); |
ae0b78d0 | 1383 | ch->board = &boards[crd]; |
1da177e4 | 1384 | |
f2cf8e25 AC |
1385 | spin_lock_irqsave(&epca_lock, flags); |
1386 | switch (bd->type) { | |
ae0b78d0 AD |
1387 | /* |
1388 | * Since some of the boards use different bitmaps for | |
1389 | * their control signals we cannot hard code these | |
1390 | * values and retain portability. We virtualize this | |
1391 | * data here. | |
1392 | */ | |
1393 | case EISAXEM: | |
1394 | case PCXEM: | |
1395 | case PCIXEM: | |
1396 | case PCIXRJ: | |
1397 | case PCIXR: | |
1398 | ch->m_rts = 0x02; | |
1399 | ch->m_dcd = 0x80; | |
1400 | ch->m_dsr = 0x20; | |
1401 | ch->m_cts = 0x10; | |
1402 | ch->m_ri = 0x40; | |
1403 | ch->m_dtr = 0x01; | |
1404 | break; | |
1405 | ||
1406 | case PCXE: | |
1407 | case PCXEVE: | |
1408 | case PCXI: | |
1409 | case PC64XE: | |
1410 | ch->m_rts = 0x02; | |
1411 | ch->m_dcd = 0x08; | |
1412 | ch->m_dsr = 0x10; | |
1413 | ch->m_cts = 0x20; | |
1414 | ch->m_ri = 0x40; | |
1415 | ch->m_dtr = 0x80; | |
1416 | break; | |
1417 | } | |
1da177e4 | 1418 | |
f2cf8e25 | 1419 | if (boards[crd].altpin) { |
1da177e4 LT |
1420 | ch->dsr = ch->m_dcd; |
1421 | ch->dcd = ch->m_dsr; | |
1422 | ch->digiext.digi_flags |= DIGI_ALTPIN; | |
ae0b78d0 | 1423 | } else { |
1da177e4 LT |
1424 | ch->dcd = ch->m_dcd; |
1425 | ch->dsr = ch->m_dsr; | |
1426 | } | |
ae0b78d0 | 1427 | |
1da177e4 LT |
1428 | ch->boardnum = crd; |
1429 | ch->channelnum = i; | |
1430 | ch->magic = EPCA_MAGIC; | |
52d41738 | 1431 | ch->port.tty = NULL; |
1da177e4 | 1432 | |
f2cf8e25 | 1433 | if (shrinkmem) { |
1da177e4 LT |
1434 | fepcmd(ch, SETBUFFER, 32, 0, 0, 0); |
1435 | shrinkmem = 0; | |
1436 | } | |
1437 | ||
bc9a5154 AV |
1438 | tseg = readw(&bc->tseg); |
1439 | rseg = readw(&bc->rseg); | |
1440 | ||
f2cf8e25 | 1441 | switch (bd->type) { |
ae0b78d0 AD |
1442 | case PCIXEM: |
1443 | case PCIXRJ: | |
1444 | case PCIXR: | |
1445 | /* Cover all the 2MEG cards */ | |
1446 | ch->txptr = memaddr + ((tseg << 4) & 0x1fffff); | |
1447 | ch->rxptr = memaddr + ((rseg << 4) & 0x1fffff); | |
1448 | ch->txwin = FEPWIN | (tseg >> 11); | |
1449 | ch->rxwin = FEPWIN | (rseg >> 11); | |
1450 | break; | |
1451 | ||
1452 | case PCXEM: | |
1453 | case EISAXEM: | |
1454 | /* Cover all the 32K windowed cards */ | |
1455 | /* Mask equal to window size - 1 */ | |
1456 | ch->txptr = memaddr + ((tseg << 4) & 0x7fff); | |
1457 | ch->rxptr = memaddr + ((rseg << 4) & 0x7fff); | |
1458 | ch->txwin = FEPWIN | (tseg >> 11); | |
1459 | ch->rxwin = FEPWIN | (rseg >> 11); | |
1460 | break; | |
1da177e4 | 1461 | |
ae0b78d0 AD |
1462 | case PCXEVE: |
1463 | case PCXE: | |
191260a0 AC |
1464 | ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) |
1465 | & 0x1fff); | |
ae0b78d0 | 1466 | ch->txwin = FEPWIN | ((tseg - bd->memory_seg) >> 9); |
191260a0 AC |
1467 | ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) |
1468 | & 0x1fff); | |
1469 | ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >> 9); | |
ae0b78d0 AD |
1470 | break; |
1471 | ||
1472 | case PCXI: | |
1473 | case PC64XE: | |
1474 | ch->txptr = memaddr + ((tseg - bd->memory_seg) << 4); | |
1475 | ch->rxptr = memaddr + ((rseg - bd->memory_seg) << 4); | |
1476 | ch->txwin = ch->rxwin = 0; | |
1477 | break; | |
1478 | } | |
1da177e4 LT |
1479 | |
1480 | ch->txbufhead = 0; | |
bc9a5154 | 1481 | ch->txbufsize = readw(&bc->tmax) + 1; |
ae0b78d0 | 1482 | |
1da177e4 | 1483 | ch->rxbufhead = 0; |
bc9a5154 | 1484 | ch->rxbufsize = readw(&bc->rmax) + 1; |
ae0b78d0 | 1485 | |
1da177e4 LT |
1486 | lowwater = ch->txbufsize >= 2000 ? 1024 : (ch->txbufsize / 2); |
1487 | ||
1488 | /* Set transmitter low water mark */ | |
1489 | fepcmd(ch, STXLWATER, lowwater, 0, 10, 0); | |
1490 | ||
1491 | /* Set receiver low water mark */ | |
1da177e4 LT |
1492 | fepcmd(ch, SRXLWATER, (ch->rxbufsize / 4), 0, 10, 0); |
1493 | ||
1494 | /* Set receiver high water mark */ | |
1da177e4 LT |
1495 | fepcmd(ch, SRXHWATER, (3 * ch->rxbufsize / 4), 0, 10, 0); |
1496 | ||
f2cf8e25 AC |
1497 | writew(100, &bc->edelay); |
1498 | writeb(1, &bc->idata); | |
ae0b78d0 | 1499 | |
f2cf8e25 AC |
1500 | ch->startc = readb(&bc->startc); |
1501 | ch->stopc = readb(&bc->stopc); | |
1502 | ch->startca = readb(&bc->startca); | |
1503 | ch->stopca = readb(&bc->stopca); | |
ae0b78d0 | 1504 | |
1da177e4 LT |
1505 | ch->fepcflag = 0; |
1506 | ch->fepiflag = 0; | |
1507 | ch->fepoflag = 0; | |
1508 | ch->fepstartc = 0; | |
1509 | ch->fepstopc = 0; | |
1510 | ch->fepstartca = 0; | |
1511 | ch->fepstopca = 0; | |
ae0b78d0 | 1512 | |
1da177e4 | 1513 | ch->close_delay = 50; |
f2cf8e25 AC |
1514 | |
1515 | spin_unlock_irqrestore(&epca_lock, flags); | |
ae0b78d0 | 1516 | } |
1da177e4 | 1517 | |
ae0b78d0 | 1518 | printk(KERN_INFO |
191260a0 AC |
1519 | "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", |
1520 | VERSION, board_desc[bd->type], (long)bd->port, | |
1521 | (long)bd->membase, bd->numports); | |
1da177e4 | 1522 | memwinoff(bd, 0); |
ae0b78d0 | 1523 | } |
1da177e4 LT |
1524 | |
1525 | static void epcapoll(unsigned long ignored) | |
ae0b78d0 | 1526 | { |
1da177e4 LT |
1527 | unsigned long flags; |
1528 | int crd; | |
191260a0 | 1529 | unsigned int head, tail; |
1da177e4 LT |
1530 | struct channel *ch; |
1531 | struct board_info *bd; | |
1532 | ||
ae0b78d0 AD |
1533 | /* |
1534 | * This routine is called upon every timer interrupt. Even though the | |
1535 | * Digi series cards are capable of generating interrupts this method | |
1536 | * of non-looping polling is more efficient. This routine checks for | |
1537 | * card generated events (Such as receive data, are transmit buffer | |
1538 | * empty) and acts on those events. | |
1539 | */ | |
1540 | for (crd = 0; crd < num_cards; crd++) { | |
1da177e4 LT |
1541 | bd = &boards[crd]; |
1542 | ch = card_ptr[crd]; | |
1543 | ||
1544 | if ((bd->status == DISABLED) || digi_poller_inhibited) | |
ae0b78d0 | 1545 | continue; |
1da177e4 | 1546 | |
ae0b78d0 AD |
1547 | /* |
1548 | * assertmemoff is not needed here; indeed it is an empty | |
1549 | * subroutine. It is being kept because future boards may need | |
1550 | * this as well as some legacy boards. | |
1551 | */ | |
f2cf8e25 AC |
1552 | spin_lock_irqsave(&epca_lock, flags); |
1553 | ||
1da177e4 LT |
1554 | assertmemoff(ch); |
1555 | ||
1556 | globalwinon(ch); | |
1557 | ||
ae0b78d0 AD |
1558 | /* |
1559 | * In this case head and tail actually refer to the event queue | |
1560 | * not the transmit or receive queue. | |
1561 | */ | |
f2cf8e25 AC |
1562 | head = readw(&ch->mailbox->ein); |
1563 | tail = readw(&ch->mailbox->eout); | |
1da177e4 | 1564 | |
ae0b78d0 | 1565 | /* If head isn't equal to tail we have an event */ |
1da177e4 LT |
1566 | if (head != tail) |
1567 | doevent(crd); | |
1da177e4 LT |
1568 | memoff(ch); |
1569 | ||
f2cf8e25 | 1570 | spin_unlock_irqrestore(&epca_lock, flags); |
f2cf8e25 | 1571 | } /* End for each card */ |
1da177e4 | 1572 | mod_timer(&epca_timer, jiffies + (HZ / 25)); |
ae0b78d0 | 1573 | } |
1da177e4 LT |
1574 | |
1575 | static void doevent(int crd) | |
ae0b78d0 | 1576 | { |
bc9a5154 | 1577 | void __iomem *eventbuf; |
1da177e4 LT |
1578 | struct channel *ch, *chan0; |
1579 | static struct tty_struct *tty; | |
f2cf8e25 | 1580 | struct board_info *bd; |
bc9a5154 | 1581 | struct board_chan __iomem *bc; |
f2cf8e25 AC |
1582 | unsigned int tail, head; |
1583 | int event, channel; | |
1584 | int mstat, lstat; | |
1da177e4 | 1585 | |
ae0b78d0 AD |
1586 | /* |
1587 | * This subroutine is called by epcapoll when an event is detected | |
1588 | * in the event queue. This routine responds to those events. | |
1589 | */ | |
1da177e4 LT |
1590 | bd = &boards[crd]; |
1591 | ||
1592 | chan0 = card_ptr[crd]; | |
1593 | epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range"); | |
1da177e4 | 1594 | assertgwinon(chan0); |
191260a0 AC |
1595 | while ((tail = readw(&chan0->mailbox->eout)) != |
1596 | (head = readw(&chan0->mailbox->ein))) { | |
1597 | /* Begin while something in event queue */ | |
1da177e4 | 1598 | assertgwinon(chan0); |
f2cf8e25 | 1599 | eventbuf = bd->re_map_membase + tail + ISTART; |
1da177e4 | 1600 | /* Get the channel the event occurred on */ |
f2cf8e25 | 1601 | channel = readb(eventbuf); |
1da177e4 | 1602 | /* Get the actual event code that occurred */ |
f2cf8e25 | 1603 | event = readb(eventbuf + 1); |
ae0b78d0 AD |
1604 | /* |
1605 | * The two assignments below get the current modem status | |
1606 | * (mstat) and the previous modem status (lstat). These are | |
1607 | * useful becuase an event could signal a change in modem | |
1608 | * signals itself. | |
1609 | */ | |
f2cf8e25 AC |
1610 | mstat = readb(eventbuf + 2); |
1611 | lstat = readb(eventbuf + 3); | |
1da177e4 LT |
1612 | |
1613 | ch = chan0 + channel; | |
f2cf8e25 | 1614 | if ((unsigned)channel >= bd->numports || !ch) { |
1da177e4 LT |
1615 | if (channel >= bd->numports) |
1616 | ch = chan0; | |
1617 | bc = ch->brdchan; | |
1618 | goto next; | |
1619 | } | |
1620 | ||
191260a0 AC |
1621 | bc = ch->brdchan; |
1622 | if (bc == NULL) | |
1da177e4 LT |
1623 | goto next; |
1624 | ||
f2cf8e25 | 1625 | if (event & DATA_IND) { /* Begin DATA_IND */ |
1da177e4 LT |
1626 | receive_data(ch); |
1627 | assertgwinon(ch); | |
1da177e4 LT |
1628 | } /* End DATA_IND */ |
1629 | /* else *//* Fix for DCD transition missed bug */ | |
ae0b78d0 | 1630 | if (event & MODEMCHG_IND) { |
1da177e4 | 1631 | /* A modem signal change has been indicated */ |
1da177e4 | 1632 | ch->imodem = mstat; |
52d41738 | 1633 | if (ch->port.flags & ASYNC_CHECK_CD) { |
191260a0 AC |
1634 | /* We are now receiving dcd */ |
1635 | if (mstat & ch->dcd) | |
52d41738 | 1636 | wake_up_interruptible(&ch->port.open_wait); |
191260a0 AC |
1637 | else /* No dcd; hangup */ |
1638 | pc_sched_event(ch, EPCA_EVENT_HANGUP); | |
1da177e4 | 1639 | } |
ae0b78d0 | 1640 | } |
52d41738 | 1641 | tty = ch->port.tty; |
ae0b78d0 AD |
1642 | if (tty) { |
1643 | if (event & BREAK_IND) { | |
1da177e4 | 1644 | /* A break has been indicated */ |
33f0f88f | 1645 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
ae0b78d0 AD |
1646 | tty_schedule_flip(tty); |
1647 | } else if (event & LOWTX_IND) { | |
1648 | if (ch->statusflags & LOWWAIT) { | |
1da177e4 LT |
1649 | ch->statusflags &= ~LOWWAIT; |
1650 | tty_wakeup(tty); | |
ae0b78d0 AD |
1651 | } |
1652 | } else if (event & EMPTYTX_IND) { | |
191260a0 AC |
1653 | /* This event is generated by |
1654 | setup_empty_event */ | |
1da177e4 | 1655 | ch->statusflags &= ~TXBUSY; |
ae0b78d0 | 1656 | if (ch->statusflags & EMPTYWAIT) { |
1da177e4 LT |
1657 | ch->statusflags &= ~EMPTYWAIT; |
1658 | tty_wakeup(tty); | |
ae0b78d0 AD |
1659 | } |
1660 | } | |
1661 | } | |
191260a0 | 1662 | next: |
1da177e4 | 1663 | globalwinon(ch); |
f2cf8e25 AC |
1664 | BUG_ON(!bc); |
1665 | writew(1, &bc->idata); | |
1666 | writew((tail + 4) & (IMAX - ISTART - 4), &chan0->mailbox->eout); | |
1da177e4 | 1667 | globalwinon(chan0); |
1da177e4 | 1668 | } /* End while something in event queue */ |
ae0b78d0 | 1669 | } |
1da177e4 LT |
1670 | |
1671 | static void fepcmd(struct channel *ch, int cmd, int word_or_byte, | |
191260a0 | 1672 | int byte2, int ncmds, int bytecmd) |
ae0b78d0 | 1673 | { |
bc9a5154 | 1674 | unchar __iomem *memaddr; |
1da177e4 LT |
1675 | unsigned int head, cmdTail, cmdStart, cmdMax; |
1676 | long count; | |
1677 | int n; | |
1678 | ||
1679 | /* This is the routine in which commands may be passed to the card. */ | |
1680 | ||
1681 | if (ch->board->status == DISABLED) | |
1da177e4 | 1682 | return; |
1da177e4 | 1683 | assertgwinon(ch); |
1da177e4 | 1684 | /* Remember head (As well as max) is just an offset not a base addr */ |
f2cf8e25 | 1685 | head = readw(&ch->mailbox->cin); |
1da177e4 | 1686 | /* cmdStart is a base address */ |
f2cf8e25 | 1687 | cmdStart = readw(&ch->mailbox->cstart); |
ae0b78d0 AD |
1688 | /* |
1689 | * We do the addition below because we do not want a max pointer | |
1690 | * relative to cmdStart. We want a max pointer that points at the | |
1691 | * physical end of the command queue. | |
1692 | */ | |
f2cf8e25 | 1693 | cmdMax = (cmdStart + 4 + readw(&ch->mailbox->cmax)); |
1da177e4 LT |
1694 | memaddr = ch->board->re_map_membase; |
1695 | ||
f2cf8e25 | 1696 | if (head >= (cmdMax - cmdStart) || (head & 03)) { |
191260a0 AC |
1697 | printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", |
1698 | __LINE__, cmd, head); | |
1699 | printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", | |
1700 | __LINE__, cmdMax, cmdStart); | |
1da177e4 LT |
1701 | return; |
1702 | } | |
f2cf8e25 AC |
1703 | if (bytecmd) { |
1704 | writeb(cmd, memaddr + head + cmdStart + 0); | |
1705 | writeb(ch->channelnum, memaddr + head + cmdStart + 1); | |
1da177e4 | 1706 | /* Below word_or_byte is bits to set */ |
f2cf8e25 | 1707 | writeb(word_or_byte, memaddr + head + cmdStart + 2); |
1da177e4 | 1708 | /* Below byte2 is bits to reset */ |
f2cf8e25 AC |
1709 | writeb(byte2, memaddr + head + cmdStart + 3); |
1710 | } else { | |
1711 | writeb(cmd, memaddr + head + cmdStart + 0); | |
1712 | writeb(ch->channelnum, memaddr + head + cmdStart + 1); | |
1713 | writeb(word_or_byte, memaddr + head + cmdStart + 2); | |
1da177e4 | 1714 | } |
1da177e4 | 1715 | head = (head + 4) & (cmdMax - cmdStart - 4); |
f2cf8e25 | 1716 | writew(head, &ch->mailbox->cin); |
1da177e4 LT |
1717 | count = FEPTIMEOUT; |
1718 | ||
ae0b78d0 | 1719 | for (;;) { |
1da177e4 | 1720 | count--; |
f2cf8e25 | 1721 | if (count == 0) { |
1da177e4 LT |
1722 | printk(KERN_ERR "<Error> - Fep not responding in fepcmd()\n"); |
1723 | return; | |
1724 | } | |
f2cf8e25 AC |
1725 | head = readw(&ch->mailbox->cin); |
1726 | cmdTail = readw(&ch->mailbox->cout); | |
1da177e4 | 1727 | n = (head - cmdTail) & (cmdMax - cmdStart - 4); |
ae0b78d0 AD |
1728 | /* |
1729 | * Basically this will break when the FEP acknowledges the | |
1730 | * command by incrementing cmdTail (Making it equal to head). | |
1731 | */ | |
1da177e4 | 1732 | if (n <= ncmds * (sizeof(short) * 4)) |
ae0b78d0 AD |
1733 | break; |
1734 | } | |
1735 | } | |
1da177e4 | 1736 | |
ae0b78d0 AD |
1737 | /* |
1738 | * Digi products use fields in their channels structures that are very similar | |
1739 | * to the c_cflag and c_iflag fields typically found in UNIX termios | |
1740 | * structures. The below three routines allow mappings between these hardware | |
1741 | * "flags" and their respective Linux flags. | |
1742 | */ | |
1da177e4 | 1743 | static unsigned termios2digi_h(struct channel *ch, unsigned cflag) |
ae0b78d0 | 1744 | { |
1da177e4 LT |
1745 | unsigned res = 0; |
1746 | ||
f2cf8e25 | 1747 | if (cflag & CRTSCTS) { |
1da177e4 LT |
1748 | ch->digiext.digi_flags |= (RTSPACE | CTSPACE); |
1749 | res |= ((ch->m_cts) | (ch->m_rts)); | |
1750 | } | |
1751 | ||
1752 | if (ch->digiext.digi_flags & RTSPACE) | |
1753 | res |= ch->m_rts; | |
1754 | ||
1755 | if (ch->digiext.digi_flags & DTRPACE) | |
1756 | res |= ch->m_dtr; | |
1757 | ||
1758 | if (ch->digiext.digi_flags & CTSPACE) | |
1759 | res |= ch->m_cts; | |
1760 | ||
1761 | if (ch->digiext.digi_flags & DSRPACE) | |
1762 | res |= ch->dsr; | |
1763 | ||
1764 | if (ch->digiext.digi_flags & DCDPACE) | |
1765 | res |= ch->dcd; | |
1766 | ||
1767 | if (res & (ch->m_rts)) | |
1768 | ch->digiext.digi_flags |= RTSPACE; | |
1769 | ||
1770 | if (res & (ch->m_cts)) | |
1771 | ch->digiext.digi_flags |= CTSPACE; | |
1772 | ||
1773 | return res; | |
ae0b78d0 | 1774 | } |
1da177e4 | 1775 | |
1da177e4 | 1776 | static unsigned termios2digi_i(struct channel *ch, unsigned iflag) |
ae0b78d0 AD |
1777 | { |
1778 | unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | | |
191260a0 | 1779 | INPCK | ISTRIP | IXON | IXANY | IXOFF); |
1da177e4 LT |
1780 | if (ch->digiext.digi_flags & DIGI_AIXON) |
1781 | res |= IAIXON; | |
1782 | return res; | |
ae0b78d0 | 1783 | } |
1da177e4 LT |
1784 | |
1785 | static unsigned termios2digi_c(struct channel *ch, unsigned cflag) | |
ae0b78d0 | 1786 | { |
1da177e4 | 1787 | unsigned res = 0; |
ae0b78d0 | 1788 | if (cflag & CBAUDEX) { |
1da177e4 | 1789 | ch->digiext.digi_flags |= DIGI_FAST; |
ae0b78d0 AD |
1790 | /* |
1791 | * HUPCL bit is used by FEP to indicate fast baud table is to | |
1792 | * be used. | |
1793 | */ | |
1da177e4 | 1794 | res |= FEP_HUPCL; |
ae0b78d0 AD |
1795 | } else |
1796 | ch->digiext.digi_flags &= ~DIGI_FAST; | |
1797 | /* | |
1798 | * CBAUD has bit position 0x1000 set these days to indicate Linux | |
1799 | * baud rate remap. Digi hardware can't handle the bit assignment. | |
1800 | * (We use a different bit assignment for high speed.). Clear this | |
1801 | * bit out. | |
1802 | */ | |
1da177e4 | 1803 | res |= cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE); |
ae0b78d0 AD |
1804 | /* |
1805 | * This gets a little confusing. The Digi cards have their own | |
8dfba4d7 | 1806 | * representation of c_cflags controlling baud rate. For the most part |
ae0b78d0 AD |
1807 | * this is identical to the Linux implementation. However; Digi |
1808 | * supports one rate (76800) that Linux doesn't. This means that the | |
1809 | * c_cflag entry that would normally mean 76800 for Digi actually means | |
1810 | * 115200 under Linux. Without the below mapping, a stty 115200 would | |
1811 | * only drive the board at 76800. Since the rate 230400 is also found | |
1812 | * after 76800, the same problem afflicts us when we choose a rate of | |
1813 | * 230400. Without the below modificiation stty 230400 would actually | |
1814 | * give us 115200. | |
1815 | * | |
1816 | * There are two additional differences. The Linux value for CLOCAL | |
1817 | * (0x800; 0004000) has no meaning to the Digi hardware. Also in later | |
1818 | * releases of Linux; the CBAUD define has CBAUDEX (0x1000; 0010000) | |
1819 | * ored into it (CBAUD = 0x100f as opposed to 0xf). CBAUDEX should be | |
1820 | * checked for a screened out prior to termios2digi_c returning. Since | |
1821 | * CLOCAL isn't used by the board this can be ignored as long as the | |
1822 | * returned value is used only by Digi hardware. | |
1823 | */ | |
f2cf8e25 | 1824 | if (cflag & CBAUDEX) { |
ae0b78d0 AD |
1825 | /* |
1826 | * The below code is trying to guarantee that only baud rates | |
1827 | * 115200 and 230400 are remapped. We use exclusive or because | |
1828 | * the various baud rates share common bit positions and | |
1829 | * therefore can't be tested for easily. | |
1830 | */ | |
1831 | if ((!((cflag & 0x7) ^ (B115200 & ~CBAUDEX))) || | |
1da177e4 | 1832 | (!((cflag & 0x7) ^ (B230400 & ~CBAUDEX)))) |
1da177e4 | 1833 | res += 1; |
1da177e4 | 1834 | } |
1da177e4 | 1835 | return res; |
ae0b78d0 | 1836 | } |
1da177e4 | 1837 | |
f2cf8e25 | 1838 | /* Caller must hold the locks */ |
1da177e4 | 1839 | static void epcaparam(struct tty_struct *tty, struct channel *ch) |
ae0b78d0 | 1840 | { |
1da177e4 | 1841 | unsigned int cmdHead; |
606d099c | 1842 | struct ktermios *ts; |
bc9a5154 | 1843 | struct board_chan __iomem *bc; |
1da177e4 LT |
1844 | unsigned mval, hflow, cflag, iflag; |
1845 | ||
1846 | bc = ch->brdchan; | |
11fb09bf | 1847 | epcaassert(bc != NULL, "bc out of range"); |
1da177e4 LT |
1848 | |
1849 | assertgwinon(ch); | |
1da177e4 | 1850 | ts = tty->termios; |
f2cf8e25 AC |
1851 | if ((ts->c_cflag & CBAUD) == 0) { /* Begin CBAUD detected */ |
1852 | cmdHead = readw(&bc->rin); | |
bc9a5154 | 1853 | writew(cmdHead, &bc->rout); |
f2cf8e25 | 1854 | cmdHead = readw(&bc->tin); |
1da177e4 | 1855 | /* Changing baud in mid-stream transmission can be wonderful */ |
ae0b78d0 AD |
1856 | /* |
1857 | * Flush current transmit buffer by setting cmdTail pointer | |
1858 | * (tout) to cmdHead pointer (tin). Hopefully the transmit | |
1859 | * buffer is empty. | |
1860 | */ | |
1da177e4 LT |
1861 | fepcmd(ch, STOUT, (unsigned) cmdHead, 0, 0, 0); |
1862 | mval = 0; | |
ae0b78d0 AD |
1863 | } else { /* Begin CBAUD not detected */ |
1864 | /* | |
1865 | * c_cflags have changed but that change had nothing to do with | |
1866 | * BAUD. Propagate the change to the card. | |
1867 | */ | |
1da177e4 | 1868 | cflag = termios2digi_c(ch, ts->c_cflag); |
f2cf8e25 | 1869 | if (cflag != ch->fepcflag) { |
1da177e4 LT |
1870 | ch->fepcflag = cflag; |
1871 | /* Set baud rate, char size, stop bits, parity */ | |
1872 | fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0); | |
1873 | } | |
ae0b78d0 AD |
1874 | /* |
1875 | * If the user has not forced CLOCAL and if the device is not a | |
1876 | * CALLOUT device (Which is always CLOCAL) we set flags such | |
1877 | * that the driver will wait on carrier detect. | |
1878 | */ | |
1da177e4 | 1879 | if (ts->c_cflag & CLOCAL) |
52d41738 | 1880 | ch->port.flags &= ~ASYNC_CHECK_CD; |
1da177e4 | 1881 | else |
52d41738 | 1882 | ch->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 1883 | mval = ch->m_dtr | ch->m_rts; |
1da177e4 | 1884 | } /* End CBAUD not detected */ |
1da177e4 | 1885 | iflag = termios2digi_i(ch, ts->c_iflag); |
1da177e4 | 1886 | /* Check input mode flags */ |
f2cf8e25 | 1887 | if (iflag != ch->fepiflag) { |
1da177e4 | 1888 | ch->fepiflag = iflag; |
ae0b78d0 AD |
1889 | /* |
1890 | * Command sets channels iflag structure on the board. Such | |
1891 | * things as input soft flow control, handling of parity | |
1892 | * errors, and break handling are all set here. | |
191260a0 AC |
1893 | * |
1894 | * break handling, parity handling, input stripping, | |
1895 | * flow control chars | |
ae0b78d0 | 1896 | */ |
1da177e4 LT |
1897 | fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); |
1898 | } | |
ae0b78d0 AD |
1899 | /* |
1900 | * Set the board mint value for this channel. This will cause hardware | |
1901 | * events to be generated each time the DCD signal (Described in mint) | |
1902 | * changes. | |
1903 | */ | |
f2cf8e25 | 1904 | writeb(ch->dcd, &bc->mint); |
1da177e4 LT |
1905 | if ((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD)) |
1906 | if (ch->digiext.digi_flags & DIGI_FORCEDCD) | |
f2cf8e25 AC |
1907 | writeb(0, &bc->mint); |
1908 | ch->imodem = readb(&bc->mstat); | |
1da177e4 | 1909 | hflow = termios2digi_h(ch, ts->c_cflag); |
f2cf8e25 | 1910 | if (hflow != ch->hflow) { |
1da177e4 | 1911 | ch->hflow = hflow; |
ae0b78d0 AD |
1912 | /* |
1913 | * Hard flow control has been selected but the board is not | |
1914 | * using it. Activate hard flow control now. | |
1915 | */ | |
1da177e4 LT |
1916 | fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1); |
1917 | } | |
1da177e4 LT |
1918 | mval ^= ch->modemfake & (mval ^ ch->modem); |
1919 | ||
f2cf8e25 | 1920 | if (ch->omodem ^ mval) { |
1da177e4 | 1921 | ch->omodem = mval; |
ae0b78d0 AD |
1922 | /* |
1923 | * The below command sets the DTR and RTS mstat structure. If | |
1924 | * hard flow control is NOT active these changes will drive the | |
1925 | * output of the actual DTR and RTS lines. If hard flow control | |
1926 | * is active, the changes will be saved in the mstat structure | |
1927 | * and only asserted when hard flow control is turned off. | |
1928 | */ | |
1da177e4 LT |
1929 | |
1930 | /* First reset DTR & RTS; then set them */ | |
1931 | fepcmd(ch, SETMODEM, 0, ((ch->m_dtr)|(ch->m_rts)), 0, 1); | |
1932 | fepcmd(ch, SETMODEM, mval, 0, 0, 1); | |
1da177e4 | 1933 | } |
f2cf8e25 | 1934 | if (ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) { |
1da177e4 LT |
1935 | ch->fepstartc = ch->startc; |
1936 | ch->fepstopc = ch->stopc; | |
ae0b78d0 AD |
1937 | /* |
1938 | * The XON / XOFF characters have changed; propagate these | |
1939 | * changes to the card. | |
1940 | */ | |
1da177e4 LT |
1941 | fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); |
1942 | } | |
f2cf8e25 | 1943 | if (ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) { |
1da177e4 LT |
1944 | ch->fepstartca = ch->startca; |
1945 | ch->fepstopca = ch->stopca; | |
ae0b78d0 AD |
1946 | /* |
1947 | * Similar to the above, this time the auxilarly XON / XOFF | |
1948 | * characters have changed; propagate these changes to the card. | |
1949 | */ | |
1da177e4 LT |
1950 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); |
1951 | } | |
ae0b78d0 | 1952 | } |
1da177e4 | 1953 | |
f2cf8e25 | 1954 | /* Caller holds lock */ |
1da177e4 | 1955 | static void receive_data(struct channel *ch) |
ae0b78d0 | 1956 | { |
1da177e4 | 1957 | unchar *rptr; |
606d099c | 1958 | struct ktermios *ts = NULL; |
1da177e4 | 1959 | struct tty_struct *tty; |
bc9a5154 | 1960 | struct board_chan __iomem *bc; |
f2cf8e25 AC |
1961 | int dataToRead, wrapgap, bytesAvailable; |
1962 | unsigned int tail, head; | |
1da177e4 | 1963 | unsigned int wrapmask; |
1da177e4 | 1964 | |
ae0b78d0 AD |
1965 | /* |
1966 | * This routine is called by doint when a receive data event has taken | |
1967 | * place. | |
1968 | */ | |
1da177e4 | 1969 | globalwinon(ch); |
1da177e4 LT |
1970 | if (ch->statusflags & RXSTOPPED) |
1971 | return; | |
52d41738 | 1972 | tty = ch->port.tty; |
1da177e4 LT |
1973 | if (tty) |
1974 | ts = tty->termios; | |
1da177e4 | 1975 | bc = ch->brdchan; |
f2cf8e25 | 1976 | BUG_ON(!bc); |
1da177e4 LT |
1977 | wrapmask = ch->rxbufsize - 1; |
1978 | ||
ae0b78d0 AD |
1979 | /* |
1980 | * Get the head and tail pointers to the receiver queue. Wrap the head | |
1981 | * pointer if it has reached the end of the buffer. | |
1982 | */ | |
f2cf8e25 | 1983 | head = readw(&bc->rin); |
1da177e4 | 1984 | head &= wrapmask; |
f2cf8e25 | 1985 | tail = readw(&bc->rout) & wrapmask; |
1da177e4 LT |
1986 | |
1987 | bytesAvailable = (head - tail) & wrapmask; | |
1da177e4 LT |
1988 | if (bytesAvailable == 0) |
1989 | return; | |
1990 | ||
ae0b78d0 | 1991 | /* If CREAD bit is off or device not open, set TX tail to head */ |
191260a0 | 1992 | if (!tty || !ts || !(ts->c_cflag & CREAD)) { |
bc9a5154 | 1993 | writew(head, &bc->rout); |
1da177e4 LT |
1994 | return; |
1995 | } | |
1996 | ||
33f0f88f | 1997 | if (tty_buffer_request_room(tty, bytesAvailable + 1) == 0) |
1da177e4 LT |
1998 | return; |
1999 | ||
f2cf8e25 AC |
2000 | if (readb(&bc->orun)) { |
2001 | writeb(0, &bc->orun); | |
191260a0 AC |
2002 | printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n", |
2003 | tty->name); | |
33f0f88f | 2004 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); |
1da177e4 | 2005 | } |
1da177e4 | 2006 | rxwinon(ch); |
191260a0 AC |
2007 | while (bytesAvailable > 0) { |
2008 | /* Begin while there is data on the card */ | |
1da177e4 | 2009 | wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; |
ae0b78d0 AD |
2010 | /* |
2011 | * Even if head has wrapped around only report the amount of | |
2012 | * data to be equal to the size - tail. Remember memcpy can't | |
2013 | * automaticly wrap around the receive buffer. | |
2014 | */ | |
191260a0 AC |
2015 | dataToRead = (wrapgap < bytesAvailable) ? wrapgap |
2016 | : bytesAvailable; | |
ae0b78d0 | 2017 | /* Make sure we don't overflow the buffer */ |
33f0f88f | 2018 | dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead); |
1da177e4 LT |
2019 | if (dataToRead == 0) |
2020 | break; | |
ae0b78d0 AD |
2021 | /* |
2022 | * Move data read from our card into the line disciplines | |
2023 | * buffer for translation if necessary. | |
2024 | */ | |
f2cf8e25 | 2025 | memcpy_fromio(rptr, ch->rxptr + tail, dataToRead); |
1da177e4 LT |
2026 | tail = (tail + dataToRead) & wrapmask; |
2027 | bytesAvailable -= dataToRead; | |
1da177e4 | 2028 | } /* End while there is data on the card */ |
1da177e4 | 2029 | globalwinon(ch); |
f2cf8e25 | 2030 | writew(tail, &bc->rout); |
1da177e4 | 2031 | /* Must be called with global data */ |
52d41738 | 2032 | tty_schedule_flip(ch->port.tty); |
ae0b78d0 | 2033 | } |
1da177e4 | 2034 | |
ae0b78d0 | 2035 | static int info_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
2036 | unsigned int cmd, unsigned long arg) |
2037 | { | |
ae0b78d0 AD |
2038 | switch (cmd) { |
2039 | case DIGI_GETINFO: | |
2040 | { | |
2041 | struct digi_info di; | |
1da177e4 LT |
2042 | int brd; |
2043 | ||
ae0b78d0 | 2044 | if (get_user(brd, (unsigned int __user *)arg)) |
f2cf8e25 AC |
2045 | return -EFAULT; |
2046 | if (brd < 0 || brd >= num_cards || num_cards == 0) | |
2047 | return -ENODEV; | |
1da177e4 LT |
2048 | |
2049 | memset(&di, 0, sizeof(di)); | |
2050 | ||
ae0b78d0 | 2051 | di.board = brd; |
1da177e4 LT |
2052 | di.status = boards[brd].status; |
2053 | di.type = boards[brd].type ; | |
2054 | di.numports = boards[brd].numports ; | |
f2cf8e25 AC |
2055 | /* Legacy fixups - just move along nothing to see */ |
2056 | di.port = (unsigned char *)boards[brd].port ; | |
2057 | di.membase = (unsigned char *)boards[brd].membase ; | |
1da177e4 | 2058 | |
ae0b78d0 | 2059 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
1da177e4 LT |
2060 | return -EFAULT; |
2061 | break; | |
2062 | ||
ae0b78d0 | 2063 | } |
1da177e4 | 2064 | |
ae0b78d0 AD |
2065 | case DIGI_POLLER: |
2066 | { | |
2067 | int brd = arg & 0xff000000 >> 16; | |
2068 | unsigned char state = arg & 0xff; | |
1da177e4 | 2069 | |
f2cf8e25 AC |
2070 | if (brd < 0 || brd >= num_cards) { |
2071 | printk(KERN_ERR "epca: DIGI POLLER : brd not valid!\n"); | |
ae0b78d0 | 2072 | return -ENODEV; |
1da177e4 | 2073 | } |
ae0b78d0 AD |
2074 | digi_poller_inhibited = state; |
2075 | break; | |
2076 | } | |
2077 | ||
2078 | case DIGI_INIT: | |
2079 | { | |
2080 | /* | |
2081 | * This call is made by the apps to complete the | |
8dfba4d7 | 2082 | * initialization of the board(s). This routine is |
ae0b78d0 AD |
2083 | * responsible for setting the card to its initial |
2084 | * state and setting the drivers control fields to the | |
2085 | * sutianle settings for the card in question. | |
2086 | */ | |
2087 | int crd; | |
2088 | for (crd = 0; crd < num_cards; crd++) | |
2089 | post_fep_init(crd); | |
2090 | break; | |
2091 | } | |
2092 | default: | |
2093 | return -ENOTTY; | |
2094 | } | |
2095 | return 0; | |
1da177e4 | 2096 | } |
1da177e4 LT |
2097 | |
2098 | static int pc_tiocmget(struct tty_struct *tty, struct file *file) | |
2099 | { | |
2100 | struct channel *ch = (struct channel *) tty->driver_data; | |
bc9a5154 | 2101 | struct board_chan __iomem *bc; |
1da177e4 LT |
2102 | unsigned int mstat, mflag = 0; |
2103 | unsigned long flags; | |
2104 | ||
2105 | if (ch) | |
2106 | bc = ch->brdchan; | |
2107 | else | |
f2cf8e25 | 2108 | return -EINVAL; |
1da177e4 | 2109 | |
f2cf8e25 | 2110 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2111 | globalwinon(ch); |
f2cf8e25 | 2112 | mstat = readb(&bc->mstat); |
1da177e4 | 2113 | memoff(ch); |
f2cf8e25 | 2114 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2115 | |
2116 | if (mstat & ch->m_dtr) | |
2117 | mflag |= TIOCM_DTR; | |
1da177e4 LT |
2118 | if (mstat & ch->m_rts) |
2119 | mflag |= TIOCM_RTS; | |
1da177e4 LT |
2120 | if (mstat & ch->m_cts) |
2121 | mflag |= TIOCM_CTS; | |
1da177e4 LT |
2122 | if (mstat & ch->dsr) |
2123 | mflag |= TIOCM_DSR; | |
1da177e4 LT |
2124 | if (mstat & ch->m_ri) |
2125 | mflag |= TIOCM_RI; | |
1da177e4 LT |
2126 | if (mstat & ch->dcd) |
2127 | mflag |= TIOCM_CD; | |
1da177e4 LT |
2128 | return mflag; |
2129 | } | |
2130 | ||
2131 | static int pc_tiocmset(struct tty_struct *tty, struct file *file, | |
2132 | unsigned int set, unsigned int clear) | |
2133 | { | |
2134 | struct channel *ch = (struct channel *) tty->driver_data; | |
2135 | unsigned long flags; | |
2136 | ||
f2cf8e25 AC |
2137 | if (!ch) |
2138 | return -EINVAL; | |
1da177e4 | 2139 | |
f2cf8e25 | 2140 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2141 | /* |
ae0b78d0 AD |
2142 | * I think this modemfake stuff is broken. It doesn't correctly reflect |
2143 | * the behaviour desired by the TIOCM* ioctls. Therefore this is | |
2144 | * probably broken. | |
1da177e4 LT |
2145 | */ |
2146 | if (set & TIOCM_RTS) { | |
2147 | ch->modemfake |= ch->m_rts; | |
2148 | ch->modem |= ch->m_rts; | |
2149 | } | |
2150 | if (set & TIOCM_DTR) { | |
2151 | ch->modemfake |= ch->m_dtr; | |
2152 | ch->modem |= ch->m_dtr; | |
2153 | } | |
2154 | if (clear & TIOCM_RTS) { | |
2155 | ch->modemfake |= ch->m_rts; | |
2156 | ch->modem &= ~ch->m_rts; | |
2157 | } | |
2158 | if (clear & TIOCM_DTR) { | |
2159 | ch->modemfake |= ch->m_dtr; | |
2160 | ch->modem &= ~ch->m_dtr; | |
2161 | } | |
1da177e4 | 2162 | globalwinon(ch); |
ae0b78d0 AD |
2163 | /* |
2164 | * The below routine generally sets up parity, baud, flow control | |
2165 | * issues, etc.... It effect both control flags and input flags. | |
2166 | */ | |
191260a0 | 2167 | epcaparam(tty, ch); |
1da177e4 | 2168 | memoff(ch); |
f2cf8e25 | 2169 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2170 | return 0; |
2171 | } | |
2172 | ||
191260a0 AC |
2173 | static int pc_ioctl(struct tty_struct *tty, struct file *file, |
2174 | unsigned int cmd, unsigned long arg) | |
ae0b78d0 | 2175 | { |
1da177e4 | 2176 | digiflow_t dflow; |
1da177e4 LT |
2177 | unsigned long flags; |
2178 | unsigned int mflag, mstat; | |
2179 | unsigned char startc, stopc; | |
bc9a5154 | 2180 | struct board_chan __iomem *bc; |
1da177e4 LT |
2181 | struct channel *ch = (struct channel *) tty->driver_data; |
2182 | void __user *argp = (void __user *)arg; | |
ae0b78d0 | 2183 | |
1da177e4 LT |
2184 | if (ch) |
2185 | bc = ch->brdchan; | |
ae0b78d0 | 2186 | else |
f2cf8e25 | 2187 | return -EINVAL; |
ae0b78d0 | 2188 | switch (cmd) { |
ae0b78d0 AD |
2189 | case TIOCMODG: |
2190 | mflag = pc_tiocmget(tty, file); | |
2191 | if (put_user(mflag, (unsigned long __user *)argp)) | |
2192 | return -EFAULT; | |
2193 | break; | |
2194 | case TIOCMODS: | |
2195 | if (get_user(mstat, (unsigned __user *)argp)) | |
2196 | return -EFAULT; | |
2197 | return pc_tiocmset(tty, file, mstat, ~mstat); | |
2198 | case TIOCSDTR: | |
2199 | spin_lock_irqsave(&epca_lock, flags); | |
2200 | ch->omodem |= ch->m_dtr; | |
2201 | globalwinon(ch); | |
2202 | fepcmd(ch, SETMODEM, ch->m_dtr, 0, 10, 1); | |
2203 | memoff(ch); | |
2204 | spin_unlock_irqrestore(&epca_lock, flags); | |
2205 | break; | |
1da177e4 | 2206 | |
ae0b78d0 AD |
2207 | case TIOCCDTR: |
2208 | spin_lock_irqsave(&epca_lock, flags); | |
2209 | ch->omodem &= ~ch->m_dtr; | |
2210 | globalwinon(ch); | |
2211 | fepcmd(ch, SETMODEM, 0, ch->m_dtr, 10, 1); | |
2212 | memoff(ch); | |
2213 | spin_unlock_irqrestore(&epca_lock, flags); | |
2214 | break; | |
2215 | case DIGI_GETA: | |
2216 | if (copy_to_user(argp, &ch->digiext, sizeof(digi_t))) | |
2217 | return -EFAULT; | |
2218 | break; | |
2219 | case DIGI_SETAW: | |
2220 | case DIGI_SETAF: | |
37925e05 | 2221 | lock_kernel(); |
ae0b78d0 | 2222 | if (cmd == DIGI_SETAW) { |
191260a0 AC |
2223 | /* Setup an event to indicate when the transmit |
2224 | buffer empties */ | |
f2cf8e25 | 2225 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 | 2226 | setup_empty_event(tty, ch); |
f2cf8e25 | 2227 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2228 | tty_wait_until_sent(tty, 0); |
2229 | } else { | |
2230 | /* ldisc lock already held in ioctl */ | |
a352def2 AC |
2231 | if (tty->ldisc.ops->flush_buffer) |
2232 | tty->ldisc.ops->flush_buffer(tty); | |
ae0b78d0 | 2233 | } |
37925e05 | 2234 | unlock_kernel(); |
ae0b78d0 AD |
2235 | /* Fall Thru */ |
2236 | case DIGI_SETA: | |
2237 | if (copy_from_user(&ch->digiext, argp, sizeof(digi_t))) | |
2238 | return -EFAULT; | |
2239 | ||
2240 | if (ch->digiext.digi_flags & DIGI_ALTPIN) { | |
2241 | ch->dcd = ch->m_dsr; | |
2242 | ch->dsr = ch->m_dcd; | |
2243 | } else { | |
2244 | ch->dcd = ch->m_dcd; | |
2245 | ch->dsr = ch->m_dsr; | |
1da177e4 | 2246 | } |
1da177e4 | 2247 | |
ae0b78d0 AD |
2248 | spin_lock_irqsave(&epca_lock, flags); |
2249 | globalwinon(ch); | |
1da177e4 | 2250 | |
ae0b78d0 AD |
2251 | /* |
2252 | * The below routine generally sets up parity, baud, flow | |
2253 | * control issues, etc.... It effect both control flags and | |
2254 | * input flags. | |
2255 | */ | |
191260a0 | 2256 | epcaparam(tty, ch); |
ae0b78d0 AD |
2257 | memoff(ch); |
2258 | spin_unlock_irqrestore(&epca_lock, flags); | |
2259 | break; | |
2260 | ||
2261 | case DIGI_GETFLOW: | |
2262 | case DIGI_GETAFLOW: | |
2263 | spin_lock_irqsave(&epca_lock, flags); | |
2264 | globalwinon(ch); | |
2265 | if (cmd == DIGI_GETFLOW) { | |
2266 | dflow.startc = readb(&bc->startc); | |
2267 | dflow.stopc = readb(&bc->stopc); | |
2268 | } else { | |
2269 | dflow.startc = readb(&bc->startca); | |
2270 | dflow.stopc = readb(&bc->stopca); | |
2271 | } | |
2272 | memoff(ch); | |
2273 | spin_unlock_irqrestore(&epca_lock, flags); | |
2274 | ||
2275 | if (copy_to_user(argp, &dflow, sizeof(dflow))) | |
2276 | return -EFAULT; | |
2277 | break; | |
2278 | ||
2279 | case DIGI_SETAFLOW: | |
2280 | case DIGI_SETFLOW: | |
2281 | if (cmd == DIGI_SETFLOW) { | |
2282 | startc = ch->startc; | |
2283 | stopc = ch->stopc; | |
2284 | } else { | |
2285 | startc = ch->startca; | |
2286 | stopc = ch->stopca; | |
2287 | } | |
1da177e4 | 2288 | |
ae0b78d0 AD |
2289 | if (copy_from_user(&dflow, argp, sizeof(dflow))) |
2290 | return -EFAULT; | |
2291 | ||
191260a0 AC |
2292 | if (dflow.startc != startc || dflow.stopc != stopc) { |
2293 | /* Begin if setflow toggled */ | |
f2cf8e25 | 2294 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2295 | globalwinon(ch); |
1da177e4 | 2296 | |
f2cf8e25 | 2297 | if (cmd == DIGI_SETFLOW) { |
ae0b78d0 AD |
2298 | ch->fepstartc = ch->startc = dflow.startc; |
2299 | ch->fepstopc = ch->stopc = dflow.stopc; | |
191260a0 AC |
2300 | fepcmd(ch, SONOFFC, ch->fepstartc, |
2301 | ch->fepstopc, 0, 1); | |
f2cf8e25 | 2302 | } else { |
ae0b78d0 AD |
2303 | ch->fepstartca = ch->startca = dflow.startc; |
2304 | ch->fepstopca = ch->stopca = dflow.stopc; | |
191260a0 AC |
2305 | fepcmd(ch, SAUXONOFFC, ch->fepstartca, |
2306 | ch->fepstopca, 0, 1); | |
1da177e4 LT |
2307 | } |
2308 | ||
ae0b78d0 AD |
2309 | if (ch->statusflags & TXSTOPPED) |
2310 | pc_start(tty); | |
1da177e4 | 2311 | |
ae0b78d0 AD |
2312 | memoff(ch); |
2313 | spin_unlock_irqrestore(&epca_lock, flags); | |
2314 | } /* End if setflow toggled */ | |
2315 | break; | |
2316 | default: | |
2317 | return -ENOIOCTLCMD; | |
2318 | } | |
1da177e4 | 2319 | return 0; |
ae0b78d0 | 2320 | } |
1da177e4 | 2321 | |
606d099c | 2322 | static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
ae0b78d0 | 2323 | { |
1da177e4 LT |
2324 | struct channel *ch; |
2325 | unsigned long flags; | |
ae0b78d0 AD |
2326 | /* |
2327 | * verifyChannel returns the channel from the tty struct if it is | |
2328 | * valid. This serves as a sanity check. | |
2329 | */ | |
191260a0 AC |
2330 | ch = verifyChannel(tty); |
2331 | ||
2332 | if (ch != NULL) { /* Begin if channel valid */ | |
f2cf8e25 | 2333 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 LT |
2334 | globalwinon(ch); |
2335 | epcaparam(tty, ch); | |
2336 | memoff(ch); | |
f2cf8e25 | 2337 | spin_unlock_irqrestore(&epca_lock, flags); |
1da177e4 LT |
2338 | |
2339 | if ((old_termios->c_cflag & CRTSCTS) && | |
2340 | ((tty->termios->c_cflag & CRTSCTS) == 0)) | |
2341 | tty->hw_stopped = 0; | |
2342 | ||
2343 | if (!(old_termios->c_cflag & CLOCAL) && | |
2344 | (tty->termios->c_cflag & CLOCAL)) | |
52d41738 | 2345 | wake_up_interruptible(&ch->port.open_wait); |
1da177e4 | 2346 | |
1da177e4 | 2347 | } /* End if channel valid */ |
ae0b78d0 | 2348 | } |
1da177e4 | 2349 | |
c4028958 | 2350 | static void do_softint(struct work_struct *work) |
ae0b78d0 | 2351 | { |
c4028958 | 2352 | struct channel *ch = container_of(work, struct channel, tqueue); |
1da177e4 | 2353 | /* Called in response to a modem change event */ |
ae0b78d0 | 2354 | if (ch && ch->magic == EPCA_MAGIC) { |
52d41738 | 2355 | struct tty_struct *tty = ch->port.tty; |
1da177e4 | 2356 | |
f2cf8e25 | 2357 | if (tty && tty->driver_data) { |
ae0b78d0 | 2358 | if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) { |
191260a0 | 2359 | tty_hangup(tty); |
52d41738 AC |
2360 | wake_up_interruptible(&ch->port.open_wait); |
2361 | ch->port.flags &= ~ASYNC_NORMAL_ACTIVE; | |
ae0b78d0 | 2362 | } |
1da177e4 | 2363 | } |
ae0b78d0 AD |
2364 | } |
2365 | } | |
1da177e4 | 2366 | |
ae0b78d0 AD |
2367 | /* |
2368 | * pc_stop and pc_start provide software flow control to the routine and the | |
2369 | * pc_ioctl routine. | |
2370 | */ | |
1da177e4 | 2371 | static void pc_stop(struct tty_struct *tty) |
ae0b78d0 | 2372 | { |
1da177e4 LT |
2373 | struct channel *ch; |
2374 | unsigned long flags; | |
ae0b78d0 AD |
2375 | /* |
2376 | * verifyChannel returns the channel from the tty struct if it is | |
2377 | * valid. This serves as a sanity check. | |
2378 | */ | |
191260a0 AC |
2379 | ch = verifyChannel(tty); |
2380 | if (ch != NULL) { | |
f2cf8e25 | 2381 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 AC |
2382 | if ((ch->statusflags & TXSTOPPED) == 0) { |
2383 | /* Begin if transmit stop requested */ | |
1da177e4 | 2384 | globalwinon(ch); |
1da177e4 | 2385 | /* STOP transmitting now !! */ |
1da177e4 | 2386 | fepcmd(ch, PAUSETX, 0, 0, 0, 0); |
1da177e4 LT |
2387 | ch->statusflags |= TXSTOPPED; |
2388 | memoff(ch); | |
1da177e4 | 2389 | } /* End if transmit stop requested */ |
f2cf8e25 | 2390 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2391 | } |
2392 | } | |
1da177e4 LT |
2393 | |
2394 | static void pc_start(struct tty_struct *tty) | |
ae0b78d0 | 2395 | { |
1da177e4 | 2396 | struct channel *ch; |
ae0b78d0 AD |
2397 | /* |
2398 | * verifyChannel returns the channel from the tty struct if it is | |
2399 | * valid. This serves as a sanity check. | |
2400 | */ | |
191260a0 AC |
2401 | ch = verifyChannel(tty); |
2402 | if (ch != NULL) { | |
1da177e4 | 2403 | unsigned long flags; |
f2cf8e25 | 2404 | spin_lock_irqsave(&epca_lock, flags); |
191260a0 AC |
2405 | /* Just in case output was resumed because of a change |
2406 | in Digi-flow */ | |
2407 | if (ch->statusflags & TXSTOPPED) { | |
2408 | /* Begin transmit resume requested */ | |
bc9a5154 | 2409 | struct board_chan __iomem *bc; |
1da177e4 LT |
2410 | globalwinon(ch); |
2411 | bc = ch->brdchan; | |
2412 | if (ch->statusflags & LOWWAIT) | |
f2cf8e25 | 2413 | writeb(1, &bc->ilow); |
1da177e4 | 2414 | /* Okay, you can start transmitting again... */ |
1da177e4 | 2415 | fepcmd(ch, RESUMETX, 0, 0, 0, 0); |
1da177e4 LT |
2416 | ch->statusflags &= ~TXSTOPPED; |
2417 | memoff(ch); | |
1da177e4 | 2418 | } /* End transmit resume requested */ |
f2cf8e25 | 2419 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2420 | } |
2421 | } | |
2422 | ||
2423 | /* | |
2424 | * The below routines pc_throttle and pc_unthrottle are used to slow (And | |
2425 | * resume) the receipt of data into the kernels receive buffers. The exact | |
2426 | * occurrence of this depends on the size of the kernels receive buffer and | |
2427 | * what the 'watermarks' are set to for that buffer. See the n_ttys.c file for | |
2428 | * more details. | |
2429 | */ | |
2430 | static void pc_throttle(struct tty_struct *tty) | |
2431 | { | |
1da177e4 LT |
2432 | struct channel *ch; |
2433 | unsigned long flags; | |
ae0b78d0 AD |
2434 | /* |
2435 | * verifyChannel returns the channel from the tty struct if it is | |
2436 | * valid. This serves as a sanity check. | |
2437 | */ | |
191260a0 AC |
2438 | ch = verifyChannel(tty); |
2439 | if (ch != NULL) { | |
f2cf8e25 AC |
2440 | spin_lock_irqsave(&epca_lock, flags); |
2441 | if ((ch->statusflags & RXSTOPPED) == 0) { | |
1da177e4 LT |
2442 | globalwinon(ch); |
2443 | fepcmd(ch, PAUSERX, 0, 0, 0, 0); | |
1da177e4 LT |
2444 | ch->statusflags |= RXSTOPPED; |
2445 | memoff(ch); | |
2446 | } | |
f2cf8e25 | 2447 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2448 | } |
2449 | } | |
1da177e4 LT |
2450 | |
2451 | static void pc_unthrottle(struct tty_struct *tty) | |
ae0b78d0 | 2452 | { |
1da177e4 LT |
2453 | struct channel *ch; |
2454 | unsigned long flags; | |
ae0b78d0 AD |
2455 | /* |
2456 | * verifyChannel returns the channel from the tty struct if it is | |
2457 | * valid. This serves as a sanity check. | |
2458 | */ | |
191260a0 AC |
2459 | ch = verifyChannel(tty); |
2460 | if (ch != NULL) { | |
2461 | /* Just in case output was resumed because of a change | |
2462 | in Digi-flow */ | |
f2cf8e25 AC |
2463 | spin_lock_irqsave(&epca_lock, flags); |
2464 | if (ch->statusflags & RXSTOPPED) { | |
1da177e4 | 2465 | globalwinon(ch); |
1da177e4 | 2466 | fepcmd(ch, RESUMERX, 0, 0, 0, 0); |
1da177e4 LT |
2467 | ch->statusflags &= ~RXSTOPPED; |
2468 | memoff(ch); | |
2469 | } | |
f2cf8e25 | 2470 | spin_unlock_irqrestore(&epca_lock, flags); |
ae0b78d0 AD |
2471 | } |
2472 | } | |
1da177e4 | 2473 | |
dcbf1280 | 2474 | static int pc_send_break(struct tty_struct *tty, int msec) |
ae0b78d0 | 2475 | { |
dcbf1280 | 2476 | struct channel *ch = (struct channel *) tty->driver_data; |
1da177e4 LT |
2477 | unsigned long flags; |
2478 | ||
dcbf1280 | 2479 | if (msec == -1) |
252883e5 AC |
2480 | msec = 0xFFFF; |
2481 | else if (msec > 0xFFFE) | |
2482 | msec = 0xFFFE; | |
2483 | else if (msec < 1) | |
2484 | msec = 1; | |
dcbf1280 | 2485 | |
f2cf8e25 | 2486 | spin_lock_irqsave(&epca_lock, flags); |
1da177e4 | 2487 | globalwinon(ch); |
ae0b78d0 AD |
2488 | /* |
2489 | * Maybe I should send an infinite break here, schedule() for msec | |
2490 | * amount of time, and then stop the break. This way, the user can't | |
2491 | * screw up the FEP by causing digi_send_break() to be called (i.e. via | |
2492 | * an ioctl()) more than once in msec amount of time. | |
2493 | * Try this for now... | |
2494 | */ | |
1da177e4 LT |
2495 | fepcmd(ch, SENDBREAK, msec, 0, 10, 0); |
2496 | memoff(ch); | |
f2cf8e25 | 2497 | spin_unlock_irqrestore(&epca_lock, flags); |
dcbf1280 | 2498 | return 0; |
ae0b78d0 | 2499 | } |
1da177e4 | 2500 | |
f2cf8e25 | 2501 | /* Caller MUST hold the lock */ |
1da177e4 | 2502 | static void setup_empty_event(struct tty_struct *tty, struct channel *ch) |
ae0b78d0 | 2503 | { |
bc9a5154 | 2504 | struct board_chan __iomem *bc = ch->brdchan; |
1da177e4 | 2505 | |
1da177e4 LT |
2506 | globalwinon(ch); |
2507 | ch->statusflags |= EMPTYWAIT; | |
ae0b78d0 AD |
2508 | /* |
2509 | * When set the iempty flag request a event to be generated when the | |
2510 | * transmit buffer is empty (If there is no BREAK in progress). | |
2511 | */ | |
f2cf8e25 | 2512 | writeb(1, &bc->iempty); |
1da177e4 | 2513 | memoff(ch); |
ae0b78d0 | 2514 | } |
1da177e4 | 2515 | |
88e88249 DH |
2516 | #ifndef MODULE |
2517 | static void __init epca_setup(char *str, int *ints) | |
ae0b78d0 | 2518 | { |
1da177e4 LT |
2519 | struct board_info board; |
2520 | int index, loop, last; | |
2521 | char *temp, *t2; | |
2522 | unsigned len; | |
2523 | ||
ae0b78d0 AD |
2524 | /* |
2525 | * If this routine looks a little strange it is because it is only | |
2526 | * called if a LILO append command is given to boot the kernel with | |
2527 | * parameters. In this way, we can provide the user a method of | |
2528 | * changing his board configuration without rebuilding the kernel. | |
2529 | */ | |
2530 | if (!liloconfig) | |
2531 | liloconfig = 1; | |
1da177e4 LT |
2532 | |
2533 | memset(&board, 0, sizeof(board)); | |
2534 | ||
2535 | /* Assume the data is int first, later we can change it */ | |
2536 | /* I think that array position 0 of ints holds the number of args */ | |
2537 | for (last = 0, index = 1; index <= ints[0]; index++) | |
ae0b78d0 AD |
2538 | switch (index) { /* Begin parse switch */ |
2539 | case 1: | |
2540 | board.status = ints[index]; | |
2541 | /* | |
2542 | * We check for 2 (As opposed to 1; because 2 is a flag | |
2543 | * instructing the driver to ignore epcaconfig.) For | |
2544 | * this reason we check for 2. | |
2545 | */ | |
191260a0 AC |
2546 | if (board.status == 2) { |
2547 | /* Begin ignore epcaconfig as well as lilo cmd line */ | |
ae0b78d0 AD |
2548 | nbdevs = 0; |
2549 | num_cards = 0; | |
2550 | return; | |
2551 | } /* End ignore epcaconfig as well as lilo cmd line */ | |
2552 | ||
2553 | if (board.status > 2) { | |
191260a0 AC |
2554 | printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", |
2555 | board.status); | |
ae0b78d0 AD |
2556 | invalid_lilo_config = 1; |
2557 | setup_error_code |= INVALID_BOARD_STATUS; | |
2558 | return; | |
2559 | } | |
2560 | last = index; | |
2561 | break; | |
2562 | case 2: | |
2563 | board.type = ints[index]; | |
2564 | if (board.type >= PCIXEM) { | |
2565 | printk(KERN_ERR "epca_setup: Invalid board type 0x%x\n", board.type); | |
2566 | invalid_lilo_config = 1; | |
2567 | setup_error_code |= INVALID_BOARD_TYPE; | |
2568 | return; | |
2569 | } | |
2570 | last = index; | |
2571 | break; | |
2572 | case 3: | |
2573 | board.altpin = ints[index]; | |
2574 | if (board.altpin > 1) { | |
2575 | printk(KERN_ERR "epca_setup: Invalid board altpin 0x%x\n", board.altpin); | |
2576 | invalid_lilo_config = 1; | |
2577 | setup_error_code |= INVALID_ALTPIN; | |
2578 | return; | |
2579 | } | |
2580 | last = index; | |
2581 | break; | |
2582 | ||
2583 | case 4: | |
2584 | board.numports = ints[index]; | |
2585 | if (board.numports < 2 || board.numports > 256) { | |
2586 | printk(KERN_ERR "epca_setup: Invalid board numports 0x%x\n", board.numports); | |
2587 | invalid_lilo_config = 1; | |
2588 | setup_error_code |= INVALID_NUM_PORTS; | |
2589 | return; | |
2590 | } | |
2591 | nbdevs += board.numports; | |
2592 | last = index; | |
2593 | break; | |
1da177e4 | 2594 | |
ae0b78d0 AD |
2595 | case 5: |
2596 | board.port = ints[index]; | |
2597 | if (ints[index] <= 0) { | |
2598 | printk(KERN_ERR "epca_setup: Invalid io port 0x%x\n", (unsigned int)board.port); | |
2599 | invalid_lilo_config = 1; | |
2600 | setup_error_code |= INVALID_PORT_BASE; | |
1da177e4 | 2601 | return; |
ae0b78d0 AD |
2602 | } |
2603 | last = index; | |
2604 | break; | |
2605 | ||
2606 | case 6: | |
2607 | board.membase = ints[index]; | |
2608 | if (ints[index] <= 0) { | |
191260a0 AC |
2609 | printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n", |
2610 | (unsigned int)board.membase); | |
ae0b78d0 AD |
2611 | invalid_lilo_config = 1; |
2612 | setup_error_code |= INVALID_MEM_BASE; | |
2613 | return; | |
2614 | } | |
2615 | last = index; | |
2616 | break; | |
2617 | ||
2618 | default: | |
2619 | printk(KERN_ERR "<Error> - epca_setup: Too many integer parms\n"); | |
2620 | return; | |
1da177e4 LT |
2621 | |
2622 | } /* End parse switch */ | |
2623 | ||
f2cf8e25 | 2624 | while (str && *str) { /* Begin while there is a string arg */ |
1da177e4 LT |
2625 | /* find the next comma or terminator */ |
2626 | temp = str; | |
1da177e4 LT |
2627 | /* While string is not null, and a comma hasn't been found */ |
2628 | while (*temp && (*temp != ',')) | |
2629 | temp++; | |
1da177e4 LT |
2630 | if (!*temp) |
2631 | temp = NULL; | |
2632 | else | |
2633 | *temp++ = 0; | |
1da177e4 LT |
2634 | /* Set index to the number of args + 1 */ |
2635 | index = last + 1; | |
2636 | ||
ae0b78d0 AD |
2637 | switch (index) { |
2638 | case 1: | |
2639 | len = strlen(str); | |
2640 | if (strncmp("Disable", str, len) == 0) | |
2641 | board.status = 0; | |
2642 | else if (strncmp("Enable", str, len) == 0) | |
2643 | board.status = 1; | |
2644 | else { | |
2645 | printk(KERN_ERR "epca_setup: Invalid status %s\n", str); | |
2646 | invalid_lilo_config = 1; | |
2647 | setup_error_code |= INVALID_BOARD_STATUS; | |
2648 | return; | |
2649 | } | |
2650 | last = index; | |
2651 | break; | |
1da177e4 | 2652 | |
ae0b78d0 AD |
2653 | case 2: |
2654 | for (loop = 0; loop < EPCA_NUM_TYPES; loop++) | |
2655 | if (strcmp(board_desc[loop], str) == 0) | |
2656 | break; | |
2657 | /* | |
2658 | * If the index incremented above refers to a | |
2659 | * legitamate board type set it here. | |
2660 | */ | |
2661 | if (index < EPCA_NUM_TYPES) | |
2662 | board.type = loop; | |
2663 | else { | |
2664 | printk(KERN_ERR "epca_setup: Invalid board type: %s\n", str); | |
2665 | invalid_lilo_config = 1; | |
2666 | setup_error_code |= INVALID_BOARD_TYPE; | |
2667 | return; | |
2668 | } | |
2669 | last = index; | |
2670 | break; | |
2671 | ||
2672 | case 3: | |
2673 | len = strlen(str); | |
2674 | if (strncmp("Disable", str, len) == 0) | |
2675 | board.altpin = 0; | |
2676 | else if (strncmp("Enable", str, len) == 0) | |
2677 | board.altpin = 1; | |
2678 | else { | |
2679 | printk(KERN_ERR "epca_setup: Invalid altpin %s\n", str); | |
2680 | invalid_lilo_config = 1; | |
2681 | setup_error_code |= INVALID_ALTPIN; | |
2682 | return; | |
2683 | } | |
2684 | last = index; | |
2685 | break; | |
1da177e4 | 2686 | |
ae0b78d0 AD |
2687 | case 4: |
2688 | t2 = str; | |
2689 | while (isdigit(*t2)) | |
2690 | t2++; | |
1da177e4 | 2691 | |
ae0b78d0 AD |
2692 | if (*t2) { |
2693 | printk(KERN_ERR "epca_setup: Invalid port count %s\n", str); | |
2694 | invalid_lilo_config = 1; | |
2695 | setup_error_code |= INVALID_NUM_PORTS; | |
2696 | return; | |
2697 | } | |
1da177e4 | 2698 | |
ae0b78d0 AD |
2699 | /* |
2700 | * There is not a man page for simple_strtoul but the | |
2701 | * code can be found in vsprintf.c. The first argument | |
2702 | * is the string to translate (To an unsigned long | |
2703 | * obviously), the second argument can be the address | |
2704 | * of any character variable or a NULL. If a variable | |
2705 | * is given, the end pointer of the string will be | |
2706 | * stored in that variable; if a NULL is given the end | |
2707 | * pointer will not be returned. The last argument is | |
2708 | * the base to use. If a 0 is indicated, the routine | |
2709 | * will attempt to determine the proper base by looking | |
2710 | * at the values prefix (A '0' for octal, a 'x' for | |
2711 | * hex, etc ... If a value is given it will use that | |
2712 | * value as the base. | |
2713 | */ | |
2714 | board.numports = simple_strtoul(str, NULL, 0); | |
2715 | nbdevs += board.numports; | |
2716 | last = index; | |
2717 | break; | |
2718 | ||
2719 | case 5: | |
2720 | t2 = str; | |
2721 | while (isxdigit(*t2)) | |
2722 | t2++; | |
2723 | ||
2724 | if (*t2) { | |
2725 | printk(KERN_ERR "epca_setup: Invalid i/o address %s\n", str); | |
2726 | invalid_lilo_config = 1; | |
2727 | setup_error_code |= INVALID_PORT_BASE; | |
2728 | return; | |
2729 | } | |
2730 | ||
2731 | board.port = simple_strtoul(str, NULL, 16); | |
2732 | last = index; | |
2733 | break; | |
2734 | ||
2735 | case 6: | |
2736 | t2 = str; | |
2737 | while (isxdigit(*t2)) | |
2738 | t2++; | |
2739 | ||
2740 | if (*t2) { | |
191260a0 | 2741 | printk(KERN_ERR "epca_setup: Invalid memory base %s\n", str); |
ae0b78d0 AD |
2742 | invalid_lilo_config = 1; |
2743 | setup_error_code |= INVALID_MEM_BASE; | |
1da177e4 | 2744 | return; |
ae0b78d0 AD |
2745 | } |
2746 | board.membase = simple_strtoul(str, NULL, 16); | |
2747 | last = index; | |
2748 | break; | |
2749 | default: | |
2750 | printk(KERN_ERR "epca: Too many string parms\n"); | |
2751 | return; | |
1da177e4 LT |
2752 | } |
2753 | str = temp; | |
1da177e4 LT |
2754 | } /* End while there is a string arg */ |
2755 | ||
f2cf8e25 AC |
2756 | if (last < 6) { |
2757 | printk(KERN_ERR "epca: Insufficient parms specified\n"); | |
1da177e4 LT |
2758 | return; |
2759 | } | |
ae0b78d0 | 2760 | |
1da177e4 | 2761 | /* I should REALLY validate the stuff here */ |
1da177e4 | 2762 | /* Copies our local copy of board into boards */ |
191260a0 | 2763 | memcpy((void *)&boards[num_cards], (void *)&board, sizeof(board)); |
1da177e4 | 2764 | /* Does this get called once per lilo arg are what ? */ |
ae0b78d0 AD |
2765 | printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n", |
2766 | num_cards, board_desc[board.type], | |
1da177e4 | 2767 | board.numports, (int)board.port, (unsigned int) board.membase); |
1da177e4 | 2768 | num_cards++; |
ae0b78d0 | 2769 | } |
1da177e4 | 2770 | |
88e88249 DH |
2771 | static int __init epca_real_setup(char *str) |
2772 | { | |
2773 | int ints[11]; | |
2774 | ||
2775 | epca_setup(get_options(str, 11, ints), ints); | |
2776 | return 1; | |
2777 | } | |
2778 | ||
2779 | __setup("digiepca", epca_real_setup); | |
2780 | #endif | |
2781 | ||
1da177e4 LT |
2782 | enum epic_board_types { |
2783 | brd_xr = 0, | |
2784 | brd_xem, | |
2785 | brd_cx, | |
2786 | brd_xrj, | |
2787 | }; | |
2788 | ||
1da177e4 LT |
2789 | /* indexed directly by epic_board_types enum */ |
2790 | static struct { | |
2791 | unsigned char board_type; | |
2792 | unsigned bar_idx; /* PCI base address region */ | |
2793 | } epca_info_tbl[] = { | |
2794 | { PCIXR, 0, }, | |
2795 | { PCIXEM, 0, }, | |
2796 | { PCICX, 0, }, | |
2797 | { PCIXRJ, 2, }, | |
2798 | }; | |
2799 | ||
ae0b78d0 | 2800 | static int __devinit epca_init_one(struct pci_dev *pdev, |
1da177e4 LT |
2801 | const struct pci_device_id *ent) |
2802 | { | |
2803 | static int board_num = -1; | |
2804 | int board_idx, info_idx = ent->driver_data; | |
2805 | unsigned long addr; | |
2806 | ||
2807 | if (pci_enable_device(pdev)) | |
2808 | return -EIO; | |
2809 | ||
2810 | board_num++; | |
2811 | board_idx = board_num + num_cards; | |
2812 | if (board_idx >= MAXBOARDS) | |
2813 | goto err_out; | |
ae0b78d0 | 2814 | |
191260a0 | 2815 | addr = pci_resource_start(pdev, epca_info_tbl[info_idx].bar_idx); |
1da177e4 | 2816 | if (!addr) { |
191260a0 | 2817 | printk(KERN_ERR PFX "PCI region #%d not available (size 0)\n", |
1da177e4 LT |
2818 | epca_info_tbl[info_idx].bar_idx); |
2819 | goto err_out; | |
2820 | } | |
2821 | ||
2822 | boards[board_idx].status = ENABLED; | |
2823 | boards[board_idx].type = epca_info_tbl[info_idx].board_type; | |
2824 | boards[board_idx].numports = 0x0; | |
f2cf8e25 AC |
2825 | boards[board_idx].port = addr + PCI_IO_OFFSET; |
2826 | boards[board_idx].membase = addr; | |
1da177e4 | 2827 | |
191260a0 AC |
2828 | if (!request_mem_region(addr + PCI_IO_OFFSET, 0x200000, "epca")) { |
2829 | printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", | |
1da177e4 LT |
2830 | 0x200000, addr + PCI_IO_OFFSET); |
2831 | goto err_out; | |
2832 | } | |
2833 | ||
191260a0 AC |
2834 | boards[board_idx].re_map_port = ioremap_nocache(addr + PCI_IO_OFFSET, |
2835 | 0x200000); | |
1da177e4 | 2836 | if (!boards[board_idx].re_map_port) { |
191260a0 | 2837 | printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
1da177e4 LT |
2838 | 0x200000, addr + PCI_IO_OFFSET); |
2839 | goto err_out_free_pciio; | |
2840 | } | |
2841 | ||
191260a0 AC |
2842 | if (!request_mem_region(addr, 0x200000, "epca")) { |
2843 | printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", | |
1da177e4 LT |
2844 | 0x200000, addr); |
2845 | goto err_out_free_iounmap; | |
2846 | } | |
2847 | ||
191260a0 | 2848 | boards[board_idx].re_map_membase = ioremap_nocache(addr, 0x200000); |
1da177e4 | 2849 | if (!boards[board_idx].re_map_membase) { |
191260a0 | 2850 | printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", |
1da177e4 LT |
2851 | 0x200000, addr + PCI_IO_OFFSET); |
2852 | goto err_out_free_memregion; | |
2853 | } | |
2854 | ||
ae0b78d0 AD |
2855 | /* |
2856 | * I don't know what the below does, but the hardware guys say its | |
2857 | * required on everything except PLX (In this case XRJ). | |
2858 | */ | |
1da177e4 | 2859 | if (info_idx != brd_xrj) { |
ae0b78d0 | 2860 | pci_write_config_byte(pdev, 0x40, 0); |
1da177e4 LT |
2861 | pci_write_config_byte(pdev, 0x46, 0); |
2862 | } | |
ae0b78d0 | 2863 | |
1da177e4 LT |
2864 | return 0; |
2865 | ||
2866 | err_out_free_memregion: | |
191260a0 | 2867 | release_mem_region(addr, 0x200000); |
1da177e4 | 2868 | err_out_free_iounmap: |
191260a0 | 2869 | iounmap(boards[board_idx].re_map_port); |
1da177e4 | 2870 | err_out_free_pciio: |
191260a0 | 2871 | release_mem_region(addr + PCI_IO_OFFSET, 0x200000); |
1da177e4 LT |
2872 | err_out: |
2873 | return -ENODEV; | |
2874 | } | |
2875 | ||
2876 | ||
2877 | static struct pci_device_id epca_pci_tbl[] = { | |
2878 | { PCI_VENDOR_DIGI, PCI_DEVICE_XR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xr }, | |
2879 | { PCI_VENDOR_DIGI, PCI_DEVICE_XEM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xem }, | |
2880 | { PCI_VENDOR_DIGI, PCI_DEVICE_CX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_cx }, | |
2881 | { PCI_VENDOR_DIGI, PCI_DEVICE_XRJ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xrj }, | |
2882 | { 0, } | |
2883 | }; | |
2884 | ||
2885 | MODULE_DEVICE_TABLE(pci, epca_pci_tbl); | |
2886 | ||
11fb09bf | 2887 | static int __init init_PCI(void) |
ae0b78d0 | 2888 | { |
191260a0 | 2889 | memset(&epca_driver, 0, sizeof(epca_driver)); |
1da177e4 LT |
2890 | epca_driver.name = "epca"; |
2891 | epca_driver.id_table = epca_pci_tbl; | |
2892 | epca_driver.probe = epca_init_one; | |
2893 | ||
2894 | return pci_register_driver(&epca_driver); | |
f2cf8e25 | 2895 | } |
1da177e4 LT |
2896 | |
2897 | MODULE_LICENSE("GPL"); |