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CommitLineData
1da177e4
LT
1/*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version
5 * 2 of the License, or (at your option) any later version.
6 *
7 * Original driver code supplied by Multi-Tech
8 *
9 * Changes
8eb04cf3
AC
10 * 1/9/98 alan@lxorguk.ukuu.org.uk
11 * Merge to 2.0.x kernel tree
1da177e4
LT
12 * Obtain and use official major/minors
13 * Loader switched to a misc device
14 * (fixed range check bug as a side effect)
15 * Printk clean up
8eb04cf3
AC
16 * 9/12/98 alan@lxorguk.ukuu.org.uk
17 * Rough port to 2.1.x
1da177e4
LT
18 *
19 * 10/6/99 sameer Merged the ISA and PCI drivers to
20 * a new unified driver.
21 *
22 * 3/9/99 sameer Added support for ISI4616 cards.
23 *
24 * 16/9/99 sameer We do not force RTS low anymore.
d8d16e47 25 * This is to prevent the firmware
1da177e4
LT
26 * from getting confused.
27 *
28 * 26/10/99 sameer Cosmetic changes:The driver now
29 * dumps the Port Count information
30 * along with I/O address and IRQ.
31 *
32 * 13/12/99 sameer Fixed the problem with IRQ sharing.
33 *
34 * 10/5/00 sameer Fixed isicom_shutdown_board()
35 * to not lower DTR on all the ports
d8d16e47 36 * when the last port on the card is
1da177e4
LT
37 * closed.
38 *
39 * 10/5/00 sameer Signal mask setup command added
d8d16e47 40 * to isicom_setup_port and
1da177e4
LT
41 * isicom_shutdown_port.
42 *
43 * 24/5/00 sameer The driver is now SMP aware.
d8d16e47
JS
44 *
45 *
1da177e4 46 * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
d8d16e47
JS
47 *
48 *
1da177e4
LT
49 * 03/01/01 anil .s Added support for resetting the
50 * internal modems on ISI cards.
51 *
52 * 08/02/01 anil .s Upgraded the driver for kernel
53 * 2.4.x
54 *
d8d16e47 55 * 11/04/01 Kevin Fixed firmware load problem with
1da177e4 56 * ISIHP-4X card
d8d16e47 57 *
1da177e4
LT
58 * 30/04/01 anil .s Fixed the remote login through
59 * ISI port problem. Now the link
60 * does not go down before password
61 * prompt.
62 *
63 * 03/05/01 anil .s Fixed the problem with IRQ sharing
64 * among ISI-PCI cards.
65 *
66 * 03/05/01 anil .s Added support to display the version
d8d16e47 67 * info during insmod as well as module
1da177e4 68 * listing by lsmod.
d8d16e47 69 *
1da177e4
LT
70 * 10/05/01 anil .s Done the modifications to the source
71 * file and Install script so that the
72 * same installation can be used for
73 * 2.2.x and 2.4.x kernel.
74 *
75 * 06/06/01 anil .s Now we drop both dtr and rts during
76 * shutdown_port as well as raise them
77 * during isicom_config_port.
d8d16e47 78 *
1da177e4
LT
79 * 09/06/01 acme@conectiva.com.br use capable, not suser, do
80 * restore_flags on failure in
81 * isicom_send_break, verify put_user
82 * result
83 *
d8d16e47
JS
84 * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps
85 * Baud index extended to 21
86 *
87 * 20/03/03 ranjeeth Made to work for Linux Advanced server.
88 * Taken care of license warning.
89 *
90 * 10/12/03 Ravindra Made to work for Fedora Core 1 of
1da177e4
LT
91 * Red Hat Distribution
92 *
93 * 06/01/05 Alan Cox Merged the ISI and base kernel strands
94 * into a single 2.6 driver
95 *
96 * ***********************************************************
97 *
d8d16e47 98 * To use this driver you also need the support package. You
1da177e4
LT
99 * can find this in RPM format on
100 * ftp://ftp.linux.org.uk/pub/linux/alan
d8d16e47 101 *
1da177e4
LT
102 * You can find the original tools for this direct from Multitech
103 * ftp://ftp.multitech.com/ISI-Cards/
104 *
970e2486 105 * Having installed the cards the module options (/etc/modprobe.d/)
1da177e4
LT
106 *
107 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
108 *
109 * Omit those entries for boards you don't have installed.
110 *
111 * TODO
1da177e4
LT
112 * Merge testing
113 * 64-bit verification
114 */
115
db91340b
JP
116#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
117
1da177e4 118#include <linux/module.h>
e65c1db1 119#include <linux/firmware.h>
1da177e4
LT
120#include <linux/kernel.h>
121#include <linux/tty.h>
33f0f88f 122#include <linux/tty_flip.h>
1da177e4
LT
123#include <linux/termios.h>
124#include <linux/fs.h>
125#include <linux/sched.h>
126#include <linux/serial.h>
127#include <linux/mm.h>
1da177e4
LT
128#include <linux/interrupt.h>
129#include <linux/timer.h>
130#include <linux/delay.h>
131#include <linux/ioport.h>
5a0e3ad6 132#include <linux/slab.h>
1da177e4 133
251b8dd7
AC
134#include <linux/uaccess.h>
135#include <linux/io.h>
1da177e4
LT
136
137#include <linux/pci.h>
138
139#include <linux/isicom.h>
140
aaa246ea
JS
141#define InterruptTheCard(base) outw(0, (base) + 0xc)
142#define ClearInterrupt(base) inw((base) + 0x0a)
143
144#ifdef DEBUG
aaa246ea
JS
145#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
146#else
aaa246ea
JS
147#define isicom_paranoia_check(a, b, c) 0
148#endif
149
9ac0948b 150static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
ae8d8a14 151static void isicom_remove(struct pci_dev *);
9ac0948b 152
1da177e4 153static struct pci_device_id isicom_pci_tbl[] = {
9ac0948b
JS
154 { PCI_DEVICE(VENDOR_ID, 0x2028) },
155 { PCI_DEVICE(VENDOR_ID, 0x2051) },
156 { PCI_DEVICE(VENDOR_ID, 0x2052) },
157 { PCI_DEVICE(VENDOR_ID, 0x2053) },
158 { PCI_DEVICE(VENDOR_ID, 0x2054) },
159 { PCI_DEVICE(VENDOR_ID, 0x2055) },
160 { PCI_DEVICE(VENDOR_ID, 0x2056) },
161 { PCI_DEVICE(VENDOR_ID, 0x2057) },
162 { PCI_DEVICE(VENDOR_ID, 0x2058) },
1da177e4
LT
163 { 0 }
164};
165MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
166
9ac0948b
JS
167static struct pci_driver isicom_driver = {
168 .name = "isicom",
169 .id_table = isicom_pci_tbl,
170 .probe = isicom_probe,
91116cba 171 .remove = isicom_remove
9ac0948b
JS
172};
173
1da177e4
LT
174static int prev_card = 3; /* start servicing isi_card[0] */
175static struct tty_driver *isicom_normal;
176
1da177e4 177static void isicom_tx(unsigned long _data);
d8d16e47 178static void isicom_start(struct tty_struct *tty);
1da177e4 179
34b55b86
JS
180static DEFINE_TIMER(tx, isicom_tx, 0, 0);
181
1da177e4
LT
182/* baud index mappings from linux defns to isi */
183
184static signed char linuxb_to_isib[] = {
7edc136a 185 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21
1da177e4
LT
186};
187
188struct isi_board {
8070e35c 189 unsigned long base;
4969b3a4 190 int irq;
1da177e4
LT
191 unsigned char port_count;
192 unsigned short status;
a547dfe9 193 unsigned short port_status; /* each bit for each port */
1da177e4 194 unsigned short shift_count;
251b8dd7 195 struct isi_port *ports;
1da177e4 196 signed char count;
1da177e4
LT
197 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
198 unsigned long flags;
938a7023 199 unsigned int index;
1da177e4
LT
200};
201
202struct isi_port {
203 unsigned short magic;
f1d03228 204 struct tty_port port;
8070e35c
JS
205 u16 channel;
206 u16 status;
251b8dd7 207 struct isi_board *card;
251b8dd7 208 unsigned char *xmit_buf;
1da177e4
LT
209 int xmit_head;
210 int xmit_tail;
211 int xmit_cnt;
212};
213
214static struct isi_board isi_card[BOARD_COUNT];
215static struct isi_port isi_ports[PORT_COUNT];
216
217/*
218 * Locking functions for card level locking. We need to own both
219 * the kernel lock for the card and have the card in a position that
220 * it wants to talk.
221 */
d8d16e47 222
810e20e7 223static int WaitTillCardIsFree(unsigned long base)
cfe7c09a
JS
224{
225 unsigned int count = 0;
226 unsigned int a = in_atomic(); /* do we run under spinlock? */
227
228 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
229 if (a)
230 mdelay(1);
231 else
232 msleep(1);
233
234 return !(inw(base + 0xe) & 0x1);
235}
236
1da177e4
LT
237static int lock_card(struct isi_board *card)
238{
8070e35c 239 unsigned long base = card->base;
5b21f9dd 240 unsigned int retries, a;
1da177e4 241
5b21f9dd 242 for (retries = 0; retries < 10; retries++) {
1da177e4 243 spin_lock_irqsave(&card->card_lock, card->flags);
5b21f9dd
JS
244 for (a = 0; a < 10; a++) {
245 if (inw(base + 0xe) & 0x1)
246 return 1;
247 udelay(10);
1da177e4 248 }
5b21f9dd
JS
249 spin_unlock_irqrestore(&card->card_lock, card->flags);
250 msleep(10);
1da177e4 251 }
e620e548 252 pr_warn("Failed to lock Card (0x%lx)\n", card->base);
a547dfe9 253
0418726b 254 return 0; /* Failed to acquire the card! */
1da177e4
LT
255}
256
1da177e4
LT
257static void unlock_card(struct isi_board *card)
258{
259 spin_unlock_irqrestore(&card->card_lock, card->flags);
260}
261
262/*
263 * ISI Card specific ops ...
264 */
d8d16e47 265
cfe7c09a 266/* card->lock HAS to be held */
d8d16e47 267static void raise_dtr(struct isi_port *port)
1da177e4 268{
d8d16e47 269 struct isi_board *card = port->card;
8070e35c
JS
270 unsigned long base = card->base;
271 u16 channel = port->channel;
1da177e4 272
cfe7c09a 273 if (WaitTillCardIsFree(base))
1da177e4
LT
274 return;
275
d8d16e47 276 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
1da177e4
LT
277 outw(0x0504, base);
278 InterruptTheCard(base);
279 port->status |= ISI_DTR;
1da177e4
LT
280}
281
cfe7c09a 282/* card->lock HAS to be held */
9428d712 283static void drop_dtr(struct isi_port *port)
d8d16e47
JS
284{
285 struct isi_board *card = port->card;
8070e35c
JS
286 unsigned long base = card->base;
287 u16 channel = port->channel;
1da177e4 288
cfe7c09a 289 if (WaitTillCardIsFree(base))
1da177e4
LT
290 return;
291
d8d16e47 292 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
1da177e4 293 outw(0x0404, base);
d8d16e47 294 InterruptTheCard(base);
1da177e4 295 port->status &= ~ISI_DTR;
1da177e4
LT
296}
297
cfe7c09a 298/* card->lock HAS to be held */
d8d16e47 299static inline void raise_rts(struct isi_port *port)
1da177e4 300{
d8d16e47 301 struct isi_board *card = port->card;
8070e35c
JS
302 unsigned long base = card->base;
303 u16 channel = port->channel;
1da177e4 304
cfe7c09a 305 if (WaitTillCardIsFree(base))
1da177e4
LT
306 return;
307
d8d16e47 308 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
1da177e4 309 outw(0x0a04, base);
d8d16e47 310 InterruptTheCard(base);
1da177e4 311 port->status |= ISI_RTS;
1da177e4 312}
cfe7c09a
JS
313
314/* card->lock HAS to be held */
d8d16e47 315static inline void drop_rts(struct isi_port *port)
1da177e4 316{
d8d16e47 317 struct isi_board *card = port->card;
8070e35c
JS
318 unsigned long base = card->base;
319 u16 channel = port->channel;
1da177e4 320
cfe7c09a 321 if (WaitTillCardIsFree(base))
1da177e4
LT
322 return;
323
d8d16e47 324 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
1da177e4 325 outw(0x0804, base);
d8d16e47 326 InterruptTheCard(base);
1da177e4 327 port->status &= ~ISI_RTS;
1da177e4
LT
328}
329
cfe7c09a 330/* card->lock MUST NOT be held */
5d951fb4 331
fcc8ac18 332static void isicom_dtr_rts(struct tty_port *port, int on)
1da177e4 333{
5d951fb4
AC
334 struct isi_port *ip = container_of(port, struct isi_port, port);
335 struct isi_board *card = ip->card;
8070e35c 336 unsigned long base = card->base;
5d951fb4 337 u16 channel = ip->channel;
1da177e4
LT
338
339 if (!lock_card(card))
340 return;
341
fcc8ac18
AC
342 if (on) {
343 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
344 outw(0x0f04, base);
345 InterruptTheCard(base);
346 ip->status |= (ISI_DTR | ISI_RTS);
347 } else {
348 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
349 outw(0x0C04, base);
350 InterruptTheCard(base);
351 ip->status &= ~(ISI_DTR | ISI_RTS);
352 }
1da177e4
LT
353 unlock_card(card);
354}
355
cfe7c09a 356/* card->lock HAS to be held */
d8d16e47 357static void drop_dtr_rts(struct isi_port *port)
1da177e4 358{
d8d16e47 359 struct isi_board *card = port->card;
8070e35c
JS
360 unsigned long base = card->base;
361 u16 channel = port->channel;
1da177e4 362
cfe7c09a 363 if (WaitTillCardIsFree(base))
1da177e4
LT
364 return;
365
d8d16e47 366 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
1da177e4 367 outw(0x0c04, base);
d8d16e47 368 InterruptTheCard(base);
1da177e4 369 port->status &= ~(ISI_RTS | ISI_DTR);
1da177e4
LT
370}
371
1da177e4
LT
372/*
373 * ISICOM Driver specific routines ...
374 *
375 */
d8d16e47 376
aaa246ea
JS
377static inline int __isicom_paranoia_check(struct isi_port const *port,
378 char *name, const char *routine)
1da177e4 379{
1da177e4 380 if (!port) {
e620e548
JP
381 pr_warn("Warning: bad isicom magic for dev %s in %s\n",
382 name, routine);
1da177e4
LT
383 return 1;
384 }
385 if (port->magic != ISICOM_MAGIC) {
e620e548
JP
386 pr_warn("Warning: NULL isicom port for dev %s in %s\n",
387 name, routine);
1da177e4 388 return 1;
d8d16e47 389 }
aaa246ea 390
1da177e4
LT
391 return 0;
392}
d8d16e47 393
1da177e4 394/*
d8d16e47 395 * Transmitter.
1da177e4
LT
396 *
397 * We shovel data into the card buffers on a regular basis. The card
398 * will do the rest of the work for us.
399 */
400
401static void isicom_tx(unsigned long _data)
402{
4969b3a4 403 unsigned long flags, base;
5b21f9dd 404 unsigned int retries;
4969b3a4 405 short count = (BOARD_COUNT-1), card;
1da177e4 406 short txcount, wrd, residue, word_count, cnt;
d8d16e47
JS
407 struct isi_port *port;
408 struct tty_struct *tty;
409
1da177e4
LT
410 /* find next active board */
411 card = (prev_card + 1) & 0x0003;
251b8dd7 412 while (count-- > 0) {
d8d16e47 413 if (isi_card[card].status & BOARD_ACTIVE)
1da177e4 414 break;
d8d16e47 415 card = (card + 1) & 0x0003;
1da177e4
LT
416 }
417 if (!(isi_card[card].status & BOARD_ACTIVE))
418 goto sched_again;
d8d16e47 419
1da177e4 420 prev_card = card;
d8d16e47 421
1da177e4
LT
422 count = isi_card[card].port_count;
423 port = isi_card[card].ports;
424 base = isi_card[card].base;
5b21f9dd
JS
425
426 spin_lock_irqsave(&isi_card[card].card_lock, flags);
427 for (retries = 0; retries < 100; retries++) {
428 if (inw(base + 0xe) & 0x1)
429 break;
430 udelay(2);
431 }
432 if (retries >= 100)
433 goto unlock;
434
d450b5a0
AC
435 tty = tty_port_tty_get(&port->port);
436 if (tty == NULL)
437 goto put_unlock;
438
251b8dd7 439 for (; count > 0; count--, port++) {
1da177e4 440 /* port not active or tx disabled to force flow control */
d41861ca
PH
441 if (!tty_port_initialized(&port->port) ||
442 !(port->status & ISI_TXOK))
1da177e4 443 continue;
d8d16e47 444
1da177e4 445 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
5b21f9dd 446 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
1da177e4 447 continue;
5b21f9dd
JS
448
449 if (!(inw(base + 0x02) & (1 << port->channel)))
d8d16e47 450 continue;
5b21f9dd 451
db91340b
JP
452 pr_debug("txing %d bytes, port%d.\n",
453 txcount, port->channel + 1);
aaa246ea
JS
454 outw((port->channel << isi_card[card].shift_count) | txcount,
455 base);
1da177e4 456 residue = NO;
d8d16e47 457 wrd = 0;
1da177e4 458 while (1) {
a547dfe9
JS
459 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
460 - port->xmit_tail));
1da177e4
LT
461 if (residue == YES) {
462 residue = NO;
463 if (cnt > 0) {
f1d03228 464 wrd |= (port->port.xmit_buf[port->xmit_tail]
a547dfe9
JS
465 << 8);
466 port->xmit_tail = (port->xmit_tail + 1)
467 & (SERIAL_XMIT_SIZE - 1);
1da177e4
LT
468 port->xmit_cnt--;
469 txcount--;
470 cnt--;
d8d16e47 471 outw(wrd, base);
a547dfe9 472 } else {
1da177e4
LT
473 outw(wrd, base);
474 break;
475 }
d8d16e47 476 }
251b8dd7
AC
477 if (cnt <= 0)
478 break;
1da177e4 479 word_count = cnt >> 1;
f1d03228 480 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
a547dfe9
JS
481 port->xmit_tail = (port->xmit_tail
482 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
1da177e4
LT
483 txcount -= (word_count << 1);
484 port->xmit_cnt -= (word_count << 1);
485 if (cnt & 0x0001) {
486 residue = YES;
f1d03228 487 wrd = port->port.xmit_buf[port->xmit_tail];
a547dfe9
JS
488 port->xmit_tail = (port->xmit_tail + 1)
489 & (SERIAL_XMIT_SIZE - 1);
1da177e4
LT
490 port->xmit_cnt--;
491 txcount--;
492 }
493 }
494
495 InterruptTheCard(base);
496 if (port->xmit_cnt <= 0)
497 port->status &= ~ISI_TXOK;
498 if (port->xmit_cnt <= WAKEUP_CHARS)
0aa5de85 499 tty_wakeup(tty);
d8d16e47 500 }
1da177e4 501
d450b5a0
AC
502put_unlock:
503 tty_kref_put(tty);
5b21f9dd
JS
504unlock:
505 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
d8d16e47
JS
506 /* schedule another tx for hopefully in about 10ms */
507sched_again:
34b55b86 508 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
d8d16e47
JS
509}
510
1da177e4 511/*
d8d16e47 512 * Main interrupt handler routine
1da177e4 513 */
d8d16e47 514
7d12e780 515static irqreturn_t isicom_interrupt(int irq, void *dev_id)
1da177e4 516{
8070e35c 517 struct isi_board *card = dev_id;
d8d16e47
JS
518 struct isi_port *port;
519 struct tty_struct *tty;
8070e35c
JS
520 unsigned long base;
521 u16 header, word_count, count, channel;
1da177e4 522 short byte_count;
33f0f88f 523 unsigned char *rp;
d8d16e47 524
1da177e4
LT
525 if (!card || !(card->status & FIRMWARE_LOADED))
526 return IRQ_NONE;
d8d16e47 527
1da177e4 528 base = card->base;
cb4a10cc
JS
529
530 /* did the card interrupt us? */
531 if (!(inw(base + 0x0e) & 0x02))
532 return IRQ_NONE;
533
1da177e4 534 spin_lock(&card->card_lock);
d8d16e47 535
18234f88
JS
536 /*
537 * disable any interrupts from the PCI card and lower the
538 * interrupt line
539 */
540 outw(0x8000, base+0x04);
541 ClearInterrupt(base);
d8d16e47 542
1da177e4
LT
543 inw(base); /* get the dummy word out */
544 header = inw(base);
545 channel = (header & 0x7800) >> card->shift_count;
546 byte_count = header & 0xff;
547
548 if (channel + 1 > card->port_count) {
e620e548
JP
549 pr_warn("%s(0x%lx): %d(channel) > port_count\n",
550 __func__, base, channel + 1);
18234f88 551 outw(0x0000, base+0x04); /* enable interrupts */
1da177e4 552 spin_unlock(&card->card_lock);
d8d16e47 553 return IRQ_HANDLED;
1da177e4
LT
554 }
555 port = card->ports + channel;
d41861ca 556 if (!tty_port_initialized(&port->port)) {
18234f88 557 outw(0x0000, base+0x04); /* enable interrupts */
174f1307 558 spin_unlock(&card->card_lock);
1da177e4 559 return IRQ_HANDLED;
d8d16e47
JS
560 }
561
d450b5a0 562 tty = tty_port_tty_get(&port->port);
1da177e4
LT
563 if (tty == NULL) {
564 word_count = byte_count >> 1;
251b8dd7 565 while (byte_count > 1) {
1da177e4
LT
566 inw(base);
567 byte_count -= 2;
568 }
569 if (byte_count & 0x01)
570 inw(base);
18234f88 571 outw(0x0000, base+0x04); /* enable interrupts */
1da177e4
LT
572 spin_unlock(&card->card_lock);
573 return IRQ_HANDLED;
574 }
d8d16e47 575
1da177e4
LT
576 if (header & 0x8000) { /* Status Packet */
577 header = inw(base);
251b8dd7 578 switch (header & 0xff) {
d8d16e47 579 case 0: /* Change in EIA signals */
2d68655d 580 if (tty_port_check_carrier(&port->port)) {
d8d16e47
JS
581 if (port->status & ISI_DCD) {
582 if (!(header & ISI_DCD)) {
583 /* Carrier has been lost */
db91340b
JP
584 pr_debug("%s: DCD->low.\n",
585 __func__);
d8d16e47 586 port->status &= ~ISI_DCD;
0aa5de85 587 tty_hangup(tty);
1da177e4 588 }
a547dfe9
JS
589 } else if (header & ISI_DCD) {
590 /* Carrier has been detected */
db91340b
JP
591 pr_debug("%s: DCD->high.\n",
592 __func__);
a547dfe9 593 port->status |= ISI_DCD;
f1d03228 594 wake_up_interruptible(&port->port.open_wait);
1da177e4 595 }
a547dfe9 596 } else {
d8d16e47
JS
597 if (header & ISI_DCD)
598 port->status |= ISI_DCD;
599 else
600 port->status &= ~ISI_DCD;
601 }
602
f21ec3d2 603 if (tty_port_cts_enabled(&port->port)) {
d450b5a0 604 if (tty->hw_stopped) {
d8d16e47 605 if (header & ISI_CTS) {
7342c59a 606 tty->hw_stopped = 0;
d8d16e47 607 /* start tx ing */
a547dfe9
JS
608 port->status |= (ISI_TXOK
609 | ISI_CTS);
0aa5de85 610 tty_wakeup(tty);
1da177e4 611 }
a547dfe9 612 } else if (!(header & ISI_CTS)) {
d450b5a0 613 tty->hw_stopped = 1;
a547dfe9
JS
614 /* stop tx ing */
615 port->status &= ~(ISI_TXOK | ISI_CTS);
1da177e4 616 }
a547dfe9 617 } else {
d8d16e47
JS
618 if (header & ISI_CTS)
619 port->status |= ISI_CTS;
1da177e4 620 else
d8d16e47
JS
621 port->status &= ~ISI_CTS;
622 }
623
624 if (header & ISI_DSR)
625 port->status |= ISI_DSR;
626 else
627 port->status &= ~ISI_DSR;
628
629 if (header & ISI_RI)
630 port->status |= ISI_RI;
631 else
632 port->status &= ~ISI_RI;
633
634 break;
635
a547dfe9 636 case 1: /* Received Break !!! */
92a19f9c 637 tty_insert_flip_char(&port->port, 0, TTY_BREAK);
f1d03228 638 if (port->port.flags & ASYNC_SAK)
d8d16e47 639 do_SAK(tty);
2e124b4a 640 tty_flip_buffer_push(&port->port);
d8d16e47
JS
641 break;
642
643 case 2: /* Statistics */
db91340b 644 pr_debug("%s: stats!!!\n", __func__);
d8d16e47
JS
645 break;
646
647 default:
db91340b
JP
648 pr_debug("%s: Unknown code in status packet.\n",
649 __func__);
d8d16e47
JS
650 break;
651 }
a547dfe9 652 } else { /* Data Packet */
2f693357
JS
653 count = tty_prepare_flip_string(&port->port, &rp,
654 byte_count & ~1);
db91340b
JP
655 pr_debug("%s: Can rx %d of %d bytes.\n",
656 __func__, count, byte_count);
1da177e4 657 word_count = count >> 1;
33f0f88f 658 insw(base, rp, word_count);
1da177e4
LT
659 byte_count -= (word_count << 1);
660 if (count & 0x0001) {
92a19f9c 661 tty_insert_flip_char(&port->port, inw(base) & 0xff,
a547dfe9 662 TTY_NORMAL);
1da177e4 663 byte_count -= 2;
d8d16e47 664 }
1da177e4 665 if (byte_count > 0) {
db91340b
JP
666 pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
667 __func__, base, channel + 1);
251b8dd7
AC
668 /* drain out unread xtra data */
669 while (byte_count > 0) {
1da177e4
LT
670 inw(base);
671 byte_count -= 2;
672 }
673 }
2e124b4a 674 tty_flip_buffer_push(&port->port);
1da177e4 675 }
18234f88 676 outw(0x0000, base+0x04); /* enable interrupts */
174f1307 677 spin_unlock(&card->card_lock);
d450b5a0 678 tty_kref_put(tty);
a547dfe9 679
1da177e4 680 return IRQ_HANDLED;
d8d16e47 681}
1da177e4 682
d450b5a0 683static void isicom_config_port(struct tty_struct *tty)
1da177e4 684{
d450b5a0 685 struct isi_port *port = tty->driver_data;
d8d16e47 686 struct isi_board *card = port->card;
1da177e4 687 unsigned long baud;
8070e35c
JS
688 unsigned long base = card->base;
689 u16 channel_setup, channel = port->channel,
690 shift_count = card->shift_count;
1da177e4 691 unsigned char flow_ctrl;
d8d16e47 692
251b8dd7 693 /* FIXME: Switch to new tty baud API */
1da177e4
LT
694 baud = C_BAUD(tty);
695 if (baud & CBAUDEX) {
696 baud &= ~CBAUDEX;
d8d16e47 697
1da177e4
LT
698 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
699 * then the card is programmed for 57.6Kbps or 115Kbps
700 * respectively.
d8d16e47
JS
701 */
702
7edc136a
JS
703 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
704 if (baud < 1 || baud > 4)
adc8d746 705 tty->termios.c_cflag &= ~CBAUDEX;
1da177e4
LT
706 else
707 baud += 15;
d8d16e47 708 }
1da177e4 709 if (baud == 15) {
d8d16e47
JS
710
711 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
1da177e4
LT
712 * by the set_serial_info ioctl ... this is done by
713 * the 'setserial' utility.
d8d16e47
JS
714 */
715
f1d03228 716 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
d8d16e47 717 baud++; /* 57.6 Kbps */
f1d03228 718 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
251b8dd7 719 baud += 2; /* 115 Kbps */
f1d03228 720 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
7edc136a 721 baud += 3; /* 230 kbps*/
f1d03228 722 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
7edc136a 723 baud += 4; /* 460 kbps*/
1da177e4
LT
724 }
725 if (linuxb_to_isib[baud] == -1) {
726 /* hang up */
d8d16e47
JS
727 drop_dtr(port);
728 return;
251b8dd7 729 } else
1da177e4 730 raise_dtr(port);
d8d16e47 731
cfe7c09a 732 if (WaitTillCardIsFree(base) == 0) {
251b8dd7 733 outw(0x8000 | (channel << shift_count) | 0x03, base);
1da177e4
LT
734 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
735 channel_setup = 0;
251b8dd7 736 switch (C_CSIZE(tty)) {
d8d16e47
JS
737 case CS5:
738 channel_setup |= ISICOM_CS5;
739 break;
740 case CS6:
741 channel_setup |= ISICOM_CS6;
742 break;
743 case CS7:
744 channel_setup |= ISICOM_CS7;
745 break;
746 case CS8:
747 channel_setup |= ISICOM_CS8;
748 break;
1da177e4 749 }
d8d16e47 750
1da177e4
LT
751 if (C_CSTOPB(tty))
752 channel_setup |= ISICOM_2SB;
753 if (C_PARENB(tty)) {
754 channel_setup |= ISICOM_EVPAR;
755 if (C_PARODD(tty))
d8d16e47 756 channel_setup |= ISICOM_ODPAR;
1da177e4 757 }
d8d16e47 758 outw(channel_setup, base);
1da177e4 759 InterruptTheCard(base);
d8d16e47 760 }
2d68655d 761 tty_port_set_check_carrier(&port->port, !C_CLOCAL(tty));
d8d16e47 762
1da177e4
LT
763 /* flow control settings ...*/
764 flow_ctrl = 0;
5604a98e
PH
765 tty_port_set_cts_flow(&port->port, C_CRTSCTS(tty));
766 if (C_CRTSCTS(tty))
1da177e4 767 flow_ctrl |= ISICOM_CTSRTS;
d8d16e47 768 if (I_IXON(tty))
1da177e4
LT
769 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
770 if (I_IXOFF(tty))
d8d16e47
JS
771 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
772
cfe7c09a 773 if (WaitTillCardIsFree(base) == 0) {
251b8dd7 774 outw(0x8000 | (channel << shift_count) | 0x04, base);
1da177e4
LT
775 outw(flow_ctrl << 8 | 0x05, base);
776 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
777 InterruptTheCard(base);
1da177e4 778 }
d8d16e47 779
1da177e4
LT
780 /* rx enabled -> enable port for rx on the card */
781 if (C_CREAD(tty)) {
782 card->port_status |= (1 << channel);
783 outw(card->port_status, base + 0x02);
784 }
785}
1da177e4 786
d8d16e47
JS
787/* open et all */
788
789static inline void isicom_setup_board(struct isi_board *bp)
1da177e4
LT
790{
791 int channel;
d8d16e47 792 struct isi_port *port;
d8d16e47 793
baaa08ac 794 bp->count++;
6ed847d8
AC
795 if (!(bp->status & BOARD_INIT)) {
796 port = bp->ports;
797 for (channel = 0; channel < bp->port_count; channel++, port++)
798 drop_dtr_rts(port);
799 }
800 bp->status |= BOARD_ACTIVE | BOARD_INIT;
1da177e4 801}
d8d16e47 802
6ed847d8
AC
803/* Activate and thus setup board are protected from races against shutdown
804 by the tty_port mutex */
805
baaa08ac 806static int isicom_activate(struct tty_port *tport, struct tty_struct *tty)
1da177e4 807{
baaa08ac 808 struct isi_port *port = container_of(tport, struct isi_port, port);
d8d16e47 809 struct isi_board *card = port->card;
1da177e4 810 unsigned long flags;
d8d16e47 811
baaa08ac 812 if (tty_port_alloc_xmit_buf(tport) < 0)
f1d03228 813 return -ENOMEM;
1da177e4
LT
814
815 spin_lock_irqsave(&card->card_lock, flags);
baaa08ac 816 isicom_setup_board(card);
d8d16e47 817
1da177e4 818 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
d8d16e47 819
1da177e4 820 /* discard any residual data */
cfe7c09a
JS
821 if (WaitTillCardIsFree(card->base) == 0) {
822 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
823 card->base);
824 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
825 InterruptTheCard(card->base);
826 }
d450b5a0 827 isicom_config_port(tty);
1da177e4 828 spin_unlock_irqrestore(&card->card_lock, flags);
d8d16e47
JS
829
830 return 0;
831}
832
31f35939
AC
833static int isicom_carrier_raised(struct tty_port *port)
834{
835 struct isi_port *ip = container_of(port, struct isi_port, port);
836 return (ip->status & ISI_DCD)?1 : 0;
837}
838
11d85d7b 839static struct tty_port *isicom_find_port(struct tty_struct *tty)
1da177e4 840{
d8d16e47
JS
841 struct isi_port *port;
842 struct isi_board *card;
17c4edf0 843 unsigned int board;
11d85d7b 844 int line = tty->index;
1da177e4 845
1da177e4
LT
846 board = BOARD(line);
847 card = &isi_card[board];
d8d16e47 848
1da177e4 849 if (!(card->status & FIRMWARE_LOADED))
11d85d7b 850 return NULL;
d8d16e47 851
1da177e4
LT
852 /* open on a port greater than the port count for the card !!! */
853 if (line > ((board * 16) + card->port_count - 1))
11d85d7b 854 return NULL;
1da177e4 855
d8d16e47 856 port = &isi_ports[line];
1da177e4 857 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
11d85d7b
AC
858 return NULL;
859
860 return &port->port;
861}
baaa08ac 862
11d85d7b
AC
863static int isicom_open(struct tty_struct *tty, struct file *filp)
864{
865 struct isi_port *port;
11d85d7b 866 struct tty_port *tport;
d8d16e47 867
11d85d7b
AC
868 tport = isicom_find_port(tty);
869 if (tport == NULL)
870 return -ENODEV;
871 port = container_of(tport, struct isi_port, port);
d8d16e47 872
a2d1e351 873 tty->driver_data = port;
baaa08ac 874 return tty_port_open(tport, tty, filp);
1da177e4 875}
d8d16e47 876
1da177e4
LT
877/* close et all */
878
cfe7c09a 879/* card->lock HAS to be held */
d8d16e47 880static void isicom_shutdown_port(struct isi_port *port)
1da177e4 881{
d8d16e47 882 struct isi_board *card = port->card;
1da177e4 883
1da177e4 884 if (--card->count < 0) {
db91340b
JP
885 pr_debug("%s: bad board(0x%lx) count %d.\n",
886 __func__, card->base, card->count);
d8d16e47 887 card->count = 0;
1da177e4 888 }
baaa08ac 889 /* last port was closed, shutdown that board too */
6ed847d8
AC
890 if (!card->count)
891 card->status &= BOARD_ACTIVE;
1da177e4
LT
892}
893
978e595f
AC
894static void isicom_flush_buffer(struct tty_struct *tty)
895{
896 struct isi_port *port = tty->driver_data;
897 struct isi_board *card = port->card;
898 unsigned long flags;
899
900 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
901 return;
902
903 spin_lock_irqsave(&card->card_lock, flags);
904 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
905 spin_unlock_irqrestore(&card->card_lock, flags);
906
907 tty_wakeup(tty);
908}
909
baaa08ac 910static void isicom_shutdown(struct tty_port *port)
1da177e4 911{
6f6412b4
AC
912 struct isi_port *ip = container_of(port, struct isi_port, port);
913 struct isi_board *card = ip->card;
1da177e4 914 unsigned long flags;
d8d16e47 915
d8d16e47 916 /* indicate to the card that no more data can be received
1da177e4
LT
917 on this port */
918 spin_lock_irqsave(&card->card_lock, flags);
baaa08ac
AC
919 card->port_status &= ~(1 << ip->channel);
920 outw(card->port_status, card->base + 0x02);
a6614999 921 isicom_shutdown_port(ip);
1da177e4 922 spin_unlock_irqrestore(&card->card_lock, flags);
2493c0c1 923 tty_port_free_xmit_buf(port);
6f6412b4 924}
d8d16e47 925
6f6412b4
AC
926static void isicom_close(struct tty_struct *tty, struct file *filp)
927{
928 struct isi_port *ip = tty->driver_data;
a2d1e351
AC
929 struct tty_port *port;
930
931 if (ip == NULL)
932 return;
933
934 port = &ip->port;
6f6412b4
AC
935 if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
936 return;
baaa08ac 937 tty_port_close(port, tty, filp);
1da177e4
LT
938}
939
940/* write et all */
d8d16e47
JS
941static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
942 int count)
1da177e4 943{
8070e35c 944 struct isi_port *port = tty->driver_data;
d8d16e47 945 struct isi_board *card = port->card;
1da177e4
LT
946 unsigned long flags;
947 int cnt, total = 0;
948
949 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
950 return 0;
d8d16e47 951
1da177e4 952 spin_lock_irqsave(&card->card_lock, flags);
d8d16e47 953
251b8dd7 954 while (1) {
a547dfe9
JS
955 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
956 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
d8d16e47 957 if (cnt <= 0)
1da177e4 958 break;
d8d16e47 959
f1d03228 960 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
a547dfe9
JS
961 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
962 - 1);
1da177e4
LT
963 port->xmit_cnt += cnt;
964 buf += cnt;
965 count -= cnt;
966 total += cnt;
d8d16e47 967 }
1da177e4
LT
968 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
969 port->status |= ISI_TXOK;
970 spin_unlock_irqrestore(&card->card_lock, flags);
d8d16e47 971 return total;
1da177e4
LT
972}
973
974/* put_char et all */
f34d7a5b 975static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
1da177e4 976{
8070e35c 977 struct isi_port *port = tty->driver_data;
d8d16e47 978 struct isi_board *card = port->card;
1da177e4 979 unsigned long flags;
d8d16e47 980
1da177e4 981 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
f34d7a5b 982 return 0;
d8d16e47 983
1da177e4 984 spin_lock_irqsave(&card->card_lock, flags);
f34d7a5b
AC
985 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
986 spin_unlock_irqrestore(&card->card_lock, flags);
987 return 0;
988 }
d8d16e47 989
f1d03228 990 port->port.xmit_buf[port->xmit_head++] = ch;
1da177e4
LT
991 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
992 port->xmit_cnt++;
993 spin_unlock_irqrestore(&card->card_lock, flags);
f34d7a5b 994 return 1;
1da177e4
LT
995}
996
997/* flush_chars et all */
d8d16e47 998static void isicom_flush_chars(struct tty_struct *tty)
1da177e4 999{
8070e35c 1000 struct isi_port *port = tty->driver_data;
d8d16e47 1001
1da177e4
LT
1002 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1003 return;
d8d16e47 1004
a547dfe9 1005 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
f1d03228 1006 !port->port.xmit_buf)
1da177e4 1007 return;
d8d16e47 1008
1da177e4
LT
1009 /* this tells the transmitter to consider this port for
1010 data output to the card ... that's the best we can do. */
d8d16e47 1011 port->status |= ISI_TXOK;
1da177e4
LT
1012}
1013
1014/* write_room et all */
d8d16e47 1015static int isicom_write_room(struct tty_struct *tty)
1da177e4 1016{
8070e35c 1017 struct isi_port *port = tty->driver_data;
1da177e4
LT
1018 int free;
1019
1020 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1021 return 0;
d8d16e47 1022
1da177e4
LT
1023 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1024 if (free < 0)
1025 free = 0;
1026 return free;
1027}
1028
1029/* chars_in_buffer et all */
d8d16e47 1030static int isicom_chars_in_buffer(struct tty_struct *tty)
1da177e4 1031{
8070e35c 1032 struct isi_port *port = tty->driver_data;
1da177e4
LT
1033 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1034 return 0;
1035 return port->xmit_cnt;
1036}
1037
1038/* ioctl et all */
6d889724 1039static int isicom_send_break(struct tty_struct *tty, int length)
1da177e4 1040{
6d889724 1041 struct isi_port *port = tty->driver_data;
d8d16e47 1042 struct isi_board *card = port->card;
8070e35c 1043 unsigned long base = card->base;
d8d16e47 1044
6d889724
AC
1045 if (length == -1)
1046 return -EOPNOTSUPP;
1047
d8d16e47 1048 if (!lock_card(card))
6d889724 1049 return -EINVAL;
d8d16e47 1050
1da177e4
LT
1051 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1052 outw((length & 0xff) << 8 | 0x00, base);
f3e2d56d 1053 outw((length & 0xff00u), base);
1da177e4
LT
1054 InterruptTheCard(base);
1055
1056 unlock_card(card);
6d889724 1057 return 0;
1da177e4
LT
1058}
1059
60b33c13 1060static int isicom_tiocmget(struct tty_struct *tty)
1da177e4 1061{
8070e35c 1062 struct isi_port *port = tty->driver_data;
1da177e4 1063 /* just send the port status */
8070e35c 1064 u16 status = port->status;
1da177e4
LT
1065
1066 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1067 return -ENODEV;
d8d16e47 1068
1da177e4
LT
1069 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1070 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1071 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1072 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1073 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1074 ((status & ISI_RI ) ? TIOCM_RI : 0);
1075}
1076
20b9d177
AC
1077static int isicom_tiocmset(struct tty_struct *tty,
1078 unsigned int set, unsigned int clear)
1da177e4 1079{
8070e35c 1080 struct isi_port *port = tty->driver_data;
cfe7c09a 1081 unsigned long flags;
d8d16e47 1082
1da177e4
LT
1083 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1084 return -ENODEV;
d8d16e47 1085
cfe7c09a 1086 spin_lock_irqsave(&port->card->card_lock, flags);
1da177e4
LT
1087 if (set & TIOCM_RTS)
1088 raise_rts(port);
1089 if (set & TIOCM_DTR)
1090 raise_dtr(port);
1091
1092 if (clear & TIOCM_RTS)
1093 drop_rts(port);
1094 if (clear & TIOCM_DTR)
1095 drop_dtr(port);
cfe7c09a 1096 spin_unlock_irqrestore(&port->card->card_lock, flags);
1da177e4
LT
1097
1098 return 0;
d8d16e47 1099}
1da177e4 1100
d450b5a0
AC
1101static int isicom_set_serial_info(struct tty_struct *tty,
1102 struct serial_struct __user *info)
1da177e4 1103{
d450b5a0 1104 struct isi_port *port = tty->driver_data;
1da177e4
LT
1105 struct serial_struct newinfo;
1106 int reconfig_port;
1107
d8d16e47 1108 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
1da177e4 1109 return -EFAULT;
d8d16e47 1110
ec82db12 1111 mutex_lock(&port->port.mutex);
f1d03228 1112 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
d8d16e47
JS
1113 (newinfo.flags & ASYNC_SPD_MASK));
1114
1da177e4 1115 if (!capable(CAP_SYS_ADMIN)) {
44b7d1b3
AC
1116 if ((newinfo.close_delay != port->port.close_delay) ||
1117 (newinfo.closing_wait != port->port.closing_wait) ||
d8d16e47 1118 ((newinfo.flags & ~ASYNC_USR_MASK) !=
f1d03228 1119 (port->port.flags & ~ASYNC_USR_MASK))) {
ec82db12 1120 mutex_unlock(&port->port.mutex);
1da177e4 1121 return -EPERM;
1eac4947 1122 }
f1d03228 1123 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
1da177e4 1124 (newinfo.flags & ASYNC_USR_MASK));
251b8dd7 1125 } else {
44b7d1b3
AC
1126 port->port.close_delay = newinfo.close_delay;
1127 port->port.closing_wait = newinfo.closing_wait;
f1d03228 1128 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
1da177e4
LT
1129 (newinfo.flags & ASYNC_FLAGS));
1130 }
1131 if (reconfig_port) {
cfe7c09a
JS
1132 unsigned long flags;
1133 spin_lock_irqsave(&port->card->card_lock, flags);
d450b5a0 1134 isicom_config_port(tty);
cfe7c09a 1135 spin_unlock_irqrestore(&port->card->card_lock, flags);
1da177e4 1136 }
ec82db12 1137 mutex_unlock(&port->port.mutex);
d8d16e47
JS
1138 return 0;
1139}
1da177e4 1140
d8d16e47
JS
1141static int isicom_get_serial_info(struct isi_port *port,
1142 struct serial_struct __user *info)
1da177e4
LT
1143{
1144 struct serial_struct out_info;
d8d16e47 1145
ec82db12 1146 mutex_lock(&port->port.mutex);
1da177e4
LT
1147 memset(&out_info, 0, sizeof(out_info));
1148/* out_info.type = ? */
1149 out_info.line = port - isi_ports;
1150 out_info.port = port->card->base;
1151 out_info.irq = port->card->irq;
f1d03228 1152 out_info.flags = port->port.flags;
1da177e4 1153/* out_info.baud_base = ? */
44b7d1b3
AC
1154 out_info.close_delay = port->port.close_delay;
1155 out_info.closing_wait = port->port.closing_wait;
ec82db12 1156 mutex_unlock(&port->port.mutex);
d8d16e47 1157 if (copy_to_user(info, &out_info, sizeof(out_info)))
1da177e4
LT
1158 return -EFAULT;
1159 return 0;
d8d16e47 1160}
1da177e4 1161
6caa76b7 1162static int isicom_ioctl(struct tty_struct *tty,
d8d16e47 1163 unsigned int cmd, unsigned long arg)
1da177e4 1164{
8070e35c 1165 struct isi_port *port = tty->driver_data;
1da177e4 1166 void __user *argp = (void __user *)arg;
1da177e4
LT
1167
1168 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1169 return -ENODEV;
1170
251b8dd7 1171 switch (cmd) {
d8d16e47
JS
1172 case TIOCGSERIAL:
1173 return isicom_get_serial_info(port, argp);
1174
1175 case TIOCSSERIAL:
d450b5a0 1176 return isicom_set_serial_info(tty, argp);
d8d16e47
JS
1177
1178 default:
1179 return -ENOIOCTLCMD;
1da177e4
LT
1180 }
1181 return 0;
1182}
1183
1184/* set_termios et all */
d8d16e47 1185static void isicom_set_termios(struct tty_struct *tty,
606d099c 1186 struct ktermios *old_termios)
1da177e4 1187{
8070e35c 1188 struct isi_port *port = tty->driver_data;
cfe7c09a 1189 unsigned long flags;
d8d16e47 1190
1da177e4
LT
1191 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1192 return;
d8d16e47 1193
adc8d746
AC
1194 if (tty->termios.c_cflag == old_termios->c_cflag &&
1195 tty->termios.c_iflag == old_termios->c_iflag)
1da177e4 1196 return;
d8d16e47 1197
cfe7c09a 1198 spin_lock_irqsave(&port->card->card_lock, flags);
d450b5a0 1199 isicom_config_port(tty);
cfe7c09a 1200 spin_unlock_irqrestore(&port->card->card_lock, flags);
d8d16e47 1201
9db276f8 1202 if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) {
1da177e4 1203 tty->hw_stopped = 0;
d8d16e47
JS
1204 isicom_start(tty);
1205 }
1da177e4
LT
1206}
1207
1208/* throttle et all */
d8d16e47 1209static void isicom_throttle(struct tty_struct *tty)
1da177e4 1210{
8070e35c 1211 struct isi_port *port = tty->driver_data;
d8d16e47
JS
1212 struct isi_board *card = port->card;
1213
1da177e4
LT
1214 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1215 return;
d8d16e47 1216
1da177e4
LT
1217 /* tell the card that this port cannot handle any more data for now */
1218 card->port_status &= ~(1 << port->channel);
1219 outw(card->port_status, card->base + 0x02);
1220}
1221
1222/* unthrottle et all */
d8d16e47 1223static void isicom_unthrottle(struct tty_struct *tty)
1da177e4 1224{
8070e35c 1225 struct isi_port *port = tty->driver_data;
d8d16e47
JS
1226 struct isi_board *card = port->card;
1227
1da177e4
LT
1228 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1229 return;
d8d16e47 1230
1da177e4
LT
1231 /* tell the card that this port is ready to accept more data */
1232 card->port_status |= (1 << port->channel);
1233 outw(card->port_status, card->base + 0x02);
1234}
1235
1236/* stop et all */
d8d16e47 1237static void isicom_stop(struct tty_struct *tty)
1da177e4 1238{
8070e35c 1239 struct isi_port *port = tty->driver_data;
1da177e4
LT
1240
1241 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1242 return;
d8d16e47 1243
1da177e4
LT
1244 /* this tells the transmitter not to consider this port for
1245 data output to the card. */
1246 port->status &= ~ISI_TXOK;
1247}
1248
1249/* start et all */
d8d16e47 1250static void isicom_start(struct tty_struct *tty)
1da177e4 1251{
8070e35c 1252 struct isi_port *port = tty->driver_data;
d8d16e47 1253
1da177e4
LT
1254 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1255 return;
d8d16e47 1256
1da177e4
LT
1257 /* this tells the transmitter to consider this port for
1258 data output to the card. */
1259 port->status |= ISI_TXOK;
1260}
1261
d8d16e47 1262static void isicom_hangup(struct tty_struct *tty)
1da177e4 1263{
8070e35c 1264 struct isi_port *port = tty->driver_data;
d8d16e47 1265
1da177e4
LT
1266 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1267 return;
3e61696b 1268 tty_port_hangup(&port->port);
1da177e4
LT
1269}
1270
1da177e4 1271
9ac0948b
JS
1272/*
1273 * Driver init and deinit functions
1274 */
1da177e4 1275
b68e31d0 1276static const struct tty_operations isicom_ops = {
d8d16e47
JS
1277 .open = isicom_open,
1278 .close = isicom_close,
1279 .write = isicom_write,
1280 .put_char = isicom_put_char,
1281 .flush_chars = isicom_flush_chars,
1282 .write_room = isicom_write_room,
1da177e4 1283 .chars_in_buffer = isicom_chars_in_buffer,
d8d16e47
JS
1284 .ioctl = isicom_ioctl,
1285 .set_termios = isicom_set_termios,
1286 .throttle = isicom_throttle,
1287 .unthrottle = isicom_unthrottle,
1288 .stop = isicom_stop,
1289 .start = isicom_start,
1290 .hangup = isicom_hangup,
1291 .flush_buffer = isicom_flush_buffer,
1292 .tiocmget = isicom_tiocmget,
1293 .tiocmset = isicom_tiocmset,
6d889724 1294 .break_ctl = isicom_send_break,
1da177e4
LT
1295};
1296
31f35939
AC
1297static const struct tty_port_operations isicom_port_ops = {
1298 .carrier_raised = isicom_carrier_raised,
fcc8ac18 1299 .dtr_rts = isicom_dtr_rts,
baaa08ac
AC
1300 .activate = isicom_activate,
1301 .shutdown = isicom_shutdown,
31f35939
AC
1302};
1303
9671f099 1304static int reset_card(struct pci_dev *pdev,
9ac0948b 1305 const unsigned int card, unsigned int *signature)
1da177e4 1306{
9ac0948b
JS
1307 struct isi_board *board = pci_get_drvdata(pdev);
1308 unsigned long base = board->base;
f0a0ba6d 1309 unsigned int sig, portcount = 0;
9ac0948b 1310 int retval = 0;
d8d16e47 1311
9ac0948b
JS
1312 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1313 base);
d8d16e47 1314
9ac0948b 1315 inw(base + 0x8);
d8d16e47 1316
f0a0ba6d 1317 msleep(10);
9ac0948b
JS
1318
1319 outw(0, base + 0x8); /* Reset */
1320
f0a0ba6d 1321 msleep(1000);
9ac0948b 1322
f0a0ba6d
JS
1323 sig = inw(base + 0x4) & 0xff;
1324
1325 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1326 sig != 0xee) {
1327 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1328 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1329 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
1330 retval = -EIO;
1331 goto end;
1332 }
1333
1334 msleep(10);
9ac0948b 1335
18234f88 1336 portcount = inw(base + 0x2);
07fb6f26 1337 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
f0a0ba6d 1338 portcount != 8 && portcount != 16)) {
898eb71c 1339 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
f0a0ba6d 1340 card + 1);
18234f88
JS
1341 retval = -EIO;
1342 goto end;
9ac0948b
JS
1343 }
1344
f0a0ba6d 1345 switch (sig) {
9ac0948b
JS
1346 case 0xa5:
1347 case 0xbb:
1348 case 0xdd:
18234f88 1349 board->port_count = (portcount == 4) ? 4 : 8;
9ac0948b
JS
1350 board->shift_count = 12;
1351 break;
1352 case 0xcc:
f0a0ba6d 1353 case 0xee:
9ac0948b
JS
1354 board->port_count = 16;
1355 board->shift_count = 11;
1356 break;
d8d16e47 1357 }
9ac0948b 1358 dev_info(&pdev->dev, "-Done\n");
f0a0ba6d 1359 *signature = sig;
d8d16e47 1360
9ac0948b
JS
1361end:
1362 return retval;
1da177e4
LT
1363}
1364
9671f099 1365static int load_firmware(struct pci_dev *pdev,
e65c1db1
JS
1366 const unsigned int index, const unsigned int signature)
1367{
1368 struct isi_board *board = pci_get_drvdata(pdev);
1369 const struct firmware *fw;
1370 unsigned long base = board->base;
1371 unsigned int a;
1372 u16 word_count, status;
1373 int retval = -EIO;
1374 char *name;
1375 u8 *data;
1376
1377 struct stframe {
1378 u16 addr;
1379 u16 count;
1380 u8 data[0];
1381 } *frame;
1382
1383 switch (signature) {
1384 case 0xa5:
1385 name = "isi608.bin";
1386 break;
1387 case 0xbb:
1388 name = "isi608em.bin";
1389 break;
1390 case 0xcc:
1391 name = "isi616em.bin";
1392 break;
1393 case 0xdd:
1394 name = "isi4608.bin";
1395 break;
1396 case 0xee:
1397 name = "isi4616.bin";
1398 break;
1399 default:
1400 dev_err(&pdev->dev, "Unknown signature.\n");
1401 goto end;
251b8dd7 1402 }
e65c1db1
JS
1403
1404 retval = request_firmware(&fw, name, &pdev->dev);
1405 if (retval)
1406 goto end;
1407
e4e04088
JS
1408 retval = -EIO;
1409
e65c1db1
JS
1410 for (frame = (struct stframe *)fw->data;
1411 frame < (struct stframe *)(fw->data + fw->size);
e4e04088
JS
1412 frame = (struct stframe *)((u8 *)(frame + 1) +
1413 frame->count)) {
e65c1db1
JS
1414 if (WaitTillCardIsFree(base))
1415 goto errrelfw;
1416
1417 outw(0xf0, base); /* start upload sequence */
1418 outw(0x00, base);
1419 outw(frame->addr, base); /* lsb of address */
1420
1421 word_count = frame->count / 2 + frame->count % 2;
1422 outw(word_count, base);
1423 InterruptTheCard(base);
1424
1425 udelay(100); /* 0x2f */
1426
1427 if (WaitTillCardIsFree(base))
1428 goto errrelfw;
1429
251b8dd7
AC
1430 status = inw(base + 0x4);
1431 if (status != 0) {
e65c1db1 1432 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
ad361c98
JP
1433 "Address:0x%x\n"
1434 "Count:0x%x\n"
1435 "Status:0x%x\n",
1436 index + 1, frame->addr, frame->count, status);
e65c1db1
JS
1437 goto errrelfw;
1438 }
1439 outsw(base, frame->data, word_count);
1440
1441 InterruptTheCard(base);
1442
1443 udelay(50); /* 0x0f */
1444
1445 if (WaitTillCardIsFree(base))
1446 goto errrelfw;
1447
251b8dd7
AC
1448 status = inw(base + 0x4);
1449 if (status != 0) {
e65c1db1
JS
1450 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1451 "Status:0x%x\n", index + 1, status);
1452 goto errrelfw;
1453 }
251b8dd7 1454 }
e65c1db1 1455
e65c1db1
JS
1456/* XXX: should we test it by reading it back and comparing with original like
1457 * in load firmware package? */
e4e04088
JS
1458 for (frame = (struct stframe *)fw->data;
1459 frame < (struct stframe *)(fw->data + fw->size);
1460 frame = (struct stframe *)((u8 *)(frame + 1) +
1461 frame->count)) {
e65c1db1
JS
1462 if (WaitTillCardIsFree(base))
1463 goto errrelfw;
1464
1465 outw(0xf1, base); /* start download sequence */
1466 outw(0x00, base);
1467 outw(frame->addr, base); /* lsb of address */
1468
1469 word_count = (frame->count >> 1) + frame->count % 2;
1470 outw(word_count + 1, base);
1471 InterruptTheCard(base);
1472
1473 udelay(50); /* 0xf */
1474
1475 if (WaitTillCardIsFree(base))
1476 goto errrelfw;
1477
251b8dd7
AC
1478 status = inw(base + 0x4);
1479 if (status != 0) {
e65c1db1 1480 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
ad361c98
JP
1481 "Address:0x%x\n"
1482 "Count:0x%x\n"
1483 "Status: 0x%x\n",
1484 index + 1, frame->addr, frame->count, status);
e65c1db1
JS
1485 goto errrelfw;
1486 }
1487
1488 data = kmalloc(word_count * 2, GFP_KERNEL);
f0671378
JS
1489 if (data == NULL) {
1490 dev_err(&pdev->dev, "Card%d, firmware upload "
1491 "failed, not enough memory\n", index + 1);
1492 goto errrelfw;
1493 }
e65c1db1
JS
1494 inw(base);
1495 insw(base, data, word_count);
1496 InterruptTheCard(base);
1497
1498 for (a = 0; a < frame->count; a++)
1499 if (data[a] != frame->data[a]) {
1500 kfree(data);
1501 dev_err(&pdev->dev, "Card%d, firmware upload "
1502 "failed\n", index + 1);
1503 goto errrelfw;
1504 }
1505 kfree(data);
1506
1507 udelay(50); /* 0xf */
1508
1509 if (WaitTillCardIsFree(base))
1510 goto errrelfw;
1511
251b8dd7
AC
1512 status = inw(base + 0x4);
1513 if (status != 0) {
e65c1db1
JS
1514 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1515 "Card Status:0x%x\n", index + 1, status);
1516 goto errrelfw;
1517 }
1518 }
1519
e4e04088
JS
1520 /* xfer ctrl */
1521 if (WaitTillCardIsFree(base))
1522 goto errrelfw;
1523
1524 outw(0xf2, base);
1525 outw(0x800, base);
1526 outw(0x0, base);
1527 outw(0x0, base);
1528 InterruptTheCard(base);
1529 outw(0x0, base + 0x4); /* for ISI4608 cards */
1530
e65c1db1
JS
1531 board->status |= FIRMWARE_LOADED;
1532 retval = 0;
1533
1534errrelfw:
1535 release_firmware(fw);
1536end:
1537 return retval;
1538}
1539
1da177e4
LT
1540/*
1541 * Insmod can set static symbols so keep these static
1542 */
1ed0c0b7 1543static unsigned int card_count;
9ac0948b 1544
9671f099 1545static int isicom_probe(struct pci_dev *pdev,
9ac0948b
JS
1546 const struct pci_device_id *ent)
1547{
9653a69e 1548 unsigned int uninitialized_var(signature), index;
9ac0948b 1549 int retval = -EPERM;
9ac0948b
JS
1550 struct isi_board *board = NULL;
1551
1ed0c0b7 1552 if (card_count >= BOARD_COUNT)
9ac0948b
JS
1553 goto err;
1554
e1e5770b
JS
1555 retval = pci_enable_device(pdev);
1556 if (retval) {
1557 dev_err(&pdev->dev, "failed to enable\n");
1558 goto err;
1559 }
1560
9ac0948b
JS
1561 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1562
1563 /* allot the first empty slot in the array */
26e1e8d1 1564 for (index = 0; index < BOARD_COUNT; index++) {
9ac0948b
JS
1565 if (isi_card[index].base == 0) {
1566 board = &isi_card[index];
1567 break;
1568 }
26e1e8d1
DC
1569 }
1570 if (index == BOARD_COUNT) {
1571 retval = -ENODEV;
1572 goto err_disable;
1573 }
9ac0948b 1574
938a7023 1575 board->index = index;
4969b3a4
JS
1576 board->base = pci_resource_start(pdev, 3);
1577 board->irq = pdev->irq;
1ed0c0b7 1578 card_count++;
9ac0948b
JS
1579
1580 pci_set_drvdata(pdev, board);
1581
78028da9
JS
1582 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1583 if (retval) {
09a4a112
JS
1584 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1585 "will be disabled.\n", board->base, board->base + 15,
1586 index + 1);
1587 retval = -EBUSY;
1ed0c0b7 1588 goto errdec;
251b8dd7 1589 }
9ac0948b 1590
09a4a112 1591 retval = request_irq(board->irq, isicom_interrupt,
9cfb5c05 1592 IRQF_SHARED, ISICOM_NAME, board);
09a4a112
JS
1593 if (retval < 0) {
1594 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1595 "Card%d will be disabled.\n", board->irq, index + 1);
9ac0948b 1596 goto errunrr;
09a4a112 1597 }
9ac0948b
JS
1598
1599 retval = reset_card(pdev, index, &signature);
1600 if (retval < 0)
1601 goto errunri;
1602
e65c1db1
JS
1603 retval = load_firmware(pdev, index, signature);
1604 if (retval < 0)
1605 goto errunri;
1606
d0f59141
JS
1607 for (index = 0; index < board->port_count; index++) {
1608 struct tty_port *tport = &board->ports[index].port;
1609 tty_port_init(tport);
1610 tport->ops = &isicom_port_ops;
1611 tport->close_delay = 50 * HZ/100;
1612 tport->closing_wait = 3000 * HZ/100;
1613 tty_port_register_device(tport, isicom_normal,
1614 board->index * 16 + index, &pdev->dev);
1615 }
938a7023 1616
9ac0948b
JS
1617 return 0;
1618
1619errunri:
1620 free_irq(board->irq, board);
1621errunrr:
78028da9 1622 pci_release_region(pdev, 3);
1ed0c0b7 1623errdec:
9ac0948b 1624 board->base = 0;
1ed0c0b7 1625 card_count--;
26e1e8d1 1626err_disable:
e1e5770b 1627 pci_disable_device(pdev);
1ed0c0b7 1628err:
9ac0948b
JS
1629 return retval;
1630}
1631
ae8d8a14 1632static void isicom_remove(struct pci_dev *pdev)
9ac0948b
JS
1633{
1634 struct isi_board *board = pci_get_drvdata(pdev);
938a7023
JS
1635 unsigned int i;
1636
d0f59141 1637 for (i = 0; i < board->port_count; i++) {
938a7023 1638 tty_unregister_device(isicom_normal, board->index * 16 + i);
d0f59141
JS
1639 tty_port_destroy(&board->ports[i].port);
1640 }
9ac0948b
JS
1641
1642 free_irq(board->irq, board);
78028da9 1643 pci_release_region(pdev, 3);
1ed0c0b7
JS
1644 board->base = 0;
1645 card_count--;
e1e5770b 1646 pci_disable_device(pdev);
9ac0948b 1647}
1da177e4 1648
ca262005 1649static int __init isicom_init(void)
1da177e4 1650{
9ac0948b
JS
1651 int retval, idx, channel;
1652 struct isi_port *port;
d8d16e47 1653
251b8dd7 1654 for (idx = 0; idx < BOARD_COUNT; idx++) {
9ac0948b
JS
1655 port = &isi_ports[idx * 16];
1656 isi_card[idx].ports = port;
1657 spin_lock_init(&isi_card[idx].card_lock);
1658 for (channel = 0; channel < 16; channel++, port++) {
1659 port->magic = ISICOM_MAGIC;
1660 port->card = &isi_card[idx];
1661 port->channel = channel;
9ac0948b 1662 port->status = 0;
9ac0948b 1663 /* . . . */
251b8dd7 1664 }
9ac0948b
JS
1665 isi_card[idx].base = 0;
1666 isi_card[idx].irq = 0;
1da177e4 1667 }
d8d16e47 1668
09a4a112
JS
1669 /* tty driver structure initialization */
1670 isicom_normal = alloc_tty_driver(PORT_COUNT);
1671 if (!isicom_normal) {
1672 retval = -ENOMEM;
9ac0948b 1673 goto error;
09a4a112
JS
1674 }
1675
09a4a112
JS
1676 isicom_normal->name = "ttyM";
1677 isicom_normal->major = ISICOM_NMAJOR;
1678 isicom_normal->minor_start = 0;
1679 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1680 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1681 isicom_normal->init_termios = tty_std_termios;
1682 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1683 CLOCAL;
938a7023 1684 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
6d889724 1685 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
09a4a112
JS
1686 tty_set_operations(isicom_normal, &isicom_ops);
1687
1688 retval = tty_register_driver(isicom_normal);
1689 if (retval) {
db91340b 1690 pr_debug("Couldn't register the dialin driver\n");
09a4a112
JS
1691 goto err_puttty;
1692 }
1da177e4 1693
9ac0948b 1694 retval = pci_register_driver(&isicom_driver);
1da177e4 1695 if (retval < 0) {
db91340b 1696 pr_err("Unable to register pci driver.\n");
09a4a112 1697 goto err_unrtty;
1da177e4 1698 }
d8d16e47 1699
34b55b86 1700 mod_timer(&tx, jiffies + 1);
d8d16e47 1701
1da177e4 1702 return 0;
09a4a112
JS
1703err_unrtty:
1704 tty_unregister_driver(isicom_normal);
1705err_puttty:
1706 put_tty_driver(isicom_normal);
9ac0948b
JS
1707error:
1708 return retval;
1da177e4
LT
1709}
1710
1711static void __exit isicom_exit(void)
1712{
e327325f 1713 del_timer_sync(&tx);
aaa246ea 1714
9ac0948b 1715 pci_unregister_driver(&isicom_driver);
09a4a112
JS
1716 tty_unregister_driver(isicom_normal);
1717 put_tty_driver(isicom_normal);
1da177e4
LT
1718}
1719
ca262005 1720module_init(isicom_init);
1da177e4 1721module_exit(isicom_exit);
aaa246ea
JS
1722
1723MODULE_AUTHOR("MultiTech");
1724MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1725MODULE_LICENSE("GPL");
e6c4ef98
BH
1726MODULE_FIRMWARE("isi608.bin");
1727MODULE_FIRMWARE("isi608em.bin");
1728MODULE_FIRMWARE("isi616em.bin");
1729MODULE_FIRMWARE("isi4608.bin");
1730MODULE_FIRMWARE("isi4616.bin");