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mei: me: add cannon point device ids
[linux/fpc-iii.git] / drivers / tty / isicom.c
blob015686ff48255fedbf0705111f9abc2afd99e63b
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Original driver code supplied by Multi-Tech
4 *
5 * Changes
6 * 1/9/98 alan@lxorguk.ukuu.org.uk
7 * Merge to 2.0.x kernel tree
8 * Obtain and use official major/minors
9 * Loader switched to a misc device
10 * (fixed range check bug as a side effect)
11 * Printk clean up
12 * 9/12/98 alan@lxorguk.ukuu.org.uk
13 * Rough port to 2.1.x
14 *
15 * 10/6/99 sameer Merged the ISA and PCI drivers to
16 * a new unified driver.
17 *
18 * 3/9/99 sameer Added support for ISI4616 cards.
19 *
20 * 16/9/99 sameer We do not force RTS low anymore.
21 * This is to prevent the firmware
22 * from getting confused.
23 *
24 * 26/10/99 sameer Cosmetic changes:The driver now
25 * dumps the Port Count information
26 * along with I/O address and IRQ.
27 *
28 * 13/12/99 sameer Fixed the problem with IRQ sharing.
29 *
30 * 10/5/00 sameer Fixed isicom_shutdown_board()
31 * to not lower DTR on all the ports
32 * when the last port on the card is
33 * closed.
34 *
35 * 10/5/00 sameer Signal mask setup command added
36 * to isicom_setup_port and
37 * isicom_shutdown_port.
38 *
39 * 24/5/00 sameer The driver is now SMP aware.
40 *
41 *
42 * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
43 *
44 *
45 * 03/01/01 anil .s Added support for resetting the
46 * internal modems on ISI cards.
47 *
48 * 08/02/01 anil .s Upgraded the driver for kernel
49 * 2.4.x
50 *
51 * 11/04/01 Kevin Fixed firmware load problem with
52 * ISIHP-4X card
53 *
54 * 30/04/01 anil .s Fixed the remote login through
55 * ISI port problem. Now the link
56 * does not go down before password
57 * prompt.
58 *
59 * 03/05/01 anil .s Fixed the problem with IRQ sharing
60 * among ISI-PCI cards.
61 *
62 * 03/05/01 anil .s Added support to display the version
63 * info during insmod as well as module
64 * listing by lsmod.
65 *
66 * 10/05/01 anil .s Done the modifications to the source
67 * file and Install script so that the
68 * same installation can be used for
69 * 2.2.x and 2.4.x kernel.
70 *
71 * 06/06/01 anil .s Now we drop both dtr and rts during
72 * shutdown_port as well as raise them
73 * during isicom_config_port.
74 *
75 * 09/06/01 acme@conectiva.com.br use capable, not suser, do
76 * restore_flags on failure in
77 * isicom_send_break, verify put_user
78 * result
79 *
80 * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps
81 * Baud index extended to 21
82 *
83 * 20/03/03 ranjeeth Made to work for Linux Advanced server.
84 * Taken care of license warning.
85 *
86 * 10/12/03 Ravindra Made to work for Fedora Core 1 of
87 * Red Hat Distribution
88 *
89 * 06/01/05 Alan Cox Merged the ISI and base kernel strands
90 * into a single 2.6 driver
91 *
92 * ***********************************************************
93 *
94 * To use this driver you also need the support package. You
95 * can find this in RPM format on
96 * ftp://ftp.linux.org.uk/pub/linux/alan
97 *
98 * You can find the original tools for this direct from Multitech
99 * ftp://ftp.multitech.com/ISI-Cards/
100 *
101 * Having installed the cards the module options (/etc/modprobe.d/)
102 *
103 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
104 *
105 * Omit those entries for boards you don't have installed.
106 *
107 * TODO
108 * Merge testing
109 * 64-bit verification
110 */
111
112 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
113
114 #include <linux/module.h>
115 #include <linux/firmware.h>
116 #include <linux/kernel.h>
117 #include <linux/tty.h>
118 #include <linux/tty_flip.h>
119 #include <linux/termios.h>
120 #include <linux/fs.h>
121 #include <linux/sched.h>
122 #include <linux/serial.h>
123 #include <linux/mm.h>
124 #include <linux/interrupt.h>
125 #include <linux/timer.h>
126 #include <linux/delay.h>
127 #include <linux/ioport.h>
128 #include <linux/slab.h>
129
130 #include <linux/uaccess.h>
131 #include <linux/io.h>
132
133 #include <linux/pci.h>
134
135 #include <linux/isicom.h>
136
137 #define InterruptTheCard(base) outw(0, (base) + 0xc)
138 #define ClearInterrupt(base) inw((base) + 0x0a)
139
140 #ifdef DEBUG
141 #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
142 #else
143 #define isicom_paranoia_check(a, b, c) 0
144 #endif
145
146 static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
147 static void isicom_remove(struct pci_dev *);
148
149 static const struct pci_device_id isicom_pci_tbl[] = {
150 { PCI_DEVICE(VENDOR_ID, 0x2028) },
151 { PCI_DEVICE(VENDOR_ID, 0x2051) },
152 { PCI_DEVICE(VENDOR_ID, 0x2052) },
153 { PCI_DEVICE(VENDOR_ID, 0x2053) },
154 { PCI_DEVICE(VENDOR_ID, 0x2054) },
155 { PCI_DEVICE(VENDOR_ID, 0x2055) },
156 { PCI_DEVICE(VENDOR_ID, 0x2056) },
157 { PCI_DEVICE(VENDOR_ID, 0x2057) },
158 { PCI_DEVICE(VENDOR_ID, 0x2058) },
159 { 0 }
160 };
161 MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
162
163 static struct pci_driver isicom_driver = {
164 .name = "isicom",
165 .id_table = isicom_pci_tbl,
166 .probe = isicom_probe,
167 .remove = isicom_remove
168 };
169
170 static int prev_card = 3; /* start servicing isi_card[0] */
171 static struct tty_driver *isicom_normal;
172
173 static void isicom_tx(struct timer_list *unused);
174 static void isicom_start(struct tty_struct *tty);
175
176 static DEFINE_TIMER(tx, isicom_tx);
177
178 /* baud index mappings from linux defns to isi */
179
180 static signed char linuxb_to_isib[] = {
181 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21
182 };
183
184 struct isi_board {
185 unsigned long base;
186 int irq;
187 unsigned char port_count;
188 unsigned short status;
189 unsigned short port_status; /* each bit for each port */
190 unsigned short shift_count;
191 struct isi_port *ports;
192 signed char count;
193 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
194 unsigned long flags;
195 unsigned int index;
196 };
197
198 struct isi_port {
199 unsigned short magic;
200 struct tty_port port;
201 u16 channel;
202 u16 status;
203 struct isi_board *card;
204 unsigned char *xmit_buf;
205 int xmit_head;
206 int xmit_tail;
207 int xmit_cnt;
208 };
209
210 static struct isi_board isi_card[BOARD_COUNT];
211 static struct isi_port isi_ports[PORT_COUNT];
212
213 /*
214 * Locking functions for card level locking. We need to own both
215 * the kernel lock for the card and have the card in a position that
216 * it wants to talk.
217 */
218
219 static int WaitTillCardIsFree(unsigned long base)
220 {
221 unsigned int count = 0;
222 unsigned int a = in_atomic(); /* do we run under spinlock? */
223
224 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
225 if (a)
226 mdelay(1);
227 else
228 msleep(1);
229
230 return !(inw(base + 0xe) & 0x1);
231 }
232
233 static int lock_card(struct isi_board *card)
234 {
235 unsigned long base = card->base;
236 unsigned int retries, a;
237
238 for (retries = 0; retries < 10; retries++) {
239 spin_lock_irqsave(&card->card_lock, card->flags);
240 for (a = 0; a < 10; a++) {
241 if (inw(base + 0xe) & 0x1)
242 return 1;
243 udelay(10);
244 }
245 spin_unlock_irqrestore(&card->card_lock, card->flags);
246 msleep(10);
247 }
248 pr_warn("Failed to lock Card (0x%lx)\n", card->base);
249
250 return 0; /* Failed to acquire the card! */
251 }
252
253 static void unlock_card(struct isi_board *card)
254 {
255 spin_unlock_irqrestore(&card->card_lock, card->flags);
256 }
257
258 /*
259 * ISI Card specific ops ...
260 */
261
262 /* card->lock HAS to be held */
263 static void raise_dtr(struct isi_port *port)
264 {
265 struct isi_board *card = port->card;
266 unsigned long base = card->base;
267 u16 channel = port->channel;
268
269 if (WaitTillCardIsFree(base))
270 return;
271
272 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
273 outw(0x0504, base);
274 InterruptTheCard(base);
275 port->status |= ISI_DTR;
276 }
277
278 /* card->lock HAS to be held */
279 static void drop_dtr(struct isi_port *port)
280 {
281 struct isi_board *card = port->card;
282 unsigned long base = card->base;
283 u16 channel = port->channel;
284
285 if (WaitTillCardIsFree(base))
286 return;
287
288 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
289 outw(0x0404, base);
290 InterruptTheCard(base);
291 port->status &= ~ISI_DTR;
292 }
293
294 /* card->lock HAS to be held */
295 static inline void raise_rts(struct isi_port *port)
296 {
297 struct isi_board *card = port->card;
298 unsigned long base = card->base;
299 u16 channel = port->channel;
300
301 if (WaitTillCardIsFree(base))
302 return;
303
304 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
305 outw(0x0a04, base);
306 InterruptTheCard(base);
307 port->status |= ISI_RTS;
308 }
309
310 /* card->lock HAS to be held */
311 static inline void drop_rts(struct isi_port *port)
312 {
313 struct isi_board *card = port->card;
314 unsigned long base = card->base;
315 u16 channel = port->channel;
316
317 if (WaitTillCardIsFree(base))
318 return;
319
320 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
321 outw(0x0804, base);
322 InterruptTheCard(base);
323 port->status &= ~ISI_RTS;
324 }
325
326 /* card->lock MUST NOT be held */
327
328 static void isicom_dtr_rts(struct tty_port *port, int on)
329 {
330 struct isi_port *ip = container_of(port, struct isi_port, port);
331 struct isi_board *card = ip->card;
332 unsigned long base = card->base;
333 u16 channel = ip->channel;
334
335 if (!lock_card(card))
336 return;
337
338 if (on) {
339 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
340 outw(0x0f04, base);
341 InterruptTheCard(base);
342 ip->status |= (ISI_DTR | ISI_RTS);
343 } else {
344 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
345 outw(0x0C04, base);
346 InterruptTheCard(base);
347 ip->status &= ~(ISI_DTR | ISI_RTS);
348 }
349 unlock_card(card);
350 }
351
352 /* card->lock HAS to be held */
353 static void drop_dtr_rts(struct isi_port *port)
354 {
355 struct isi_board *card = port->card;
356 unsigned long base = card->base;
357 u16 channel = port->channel;
358
359 if (WaitTillCardIsFree(base))
360 return;
361
362 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
363 outw(0x0c04, base);
364 InterruptTheCard(base);
365 port->status &= ~(ISI_RTS | ISI_DTR);
366 }
367
368 /*
369 * ISICOM Driver specific routines ...
370 *
371 */
372
373 static inline int __isicom_paranoia_check(struct isi_port const *port,
374 char *name, const char *routine)
375 {
376 if (!port) {
377 pr_warn("Warning: bad isicom magic for dev %s in %s\n",
378 name, routine);
379 return 1;
380 }
381 if (port->magic != ISICOM_MAGIC) {
382 pr_warn("Warning: NULL isicom port for dev %s in %s\n",
383 name, routine);
384 return 1;
385 }
386
387 return 0;
388 }
389
390 /*
391 * Transmitter.
392 *
393 * We shovel data into the card buffers on a regular basis. The card
394 * will do the rest of the work for us.
395 */
396
397 static void isicom_tx(struct timer_list *unused)
398 {
399 unsigned long flags, base;
400 unsigned int retries;
401 short count = (BOARD_COUNT-1), card;
402 short txcount, wrd, residue, word_count, cnt;
403 struct isi_port *port;
404 struct tty_struct *tty;
405
406 /* find next active board */
407 card = (prev_card + 1) & 0x0003;
408 while (count-- > 0) {
409 if (isi_card[card].status & BOARD_ACTIVE)
410 break;
411 card = (card + 1) & 0x0003;
412 }
413 if (!(isi_card[card].status & BOARD_ACTIVE))
414 goto sched_again;
415
416 prev_card = card;
417
418 count = isi_card[card].port_count;
419 port = isi_card[card].ports;
420 base = isi_card[card].base;
421
422 spin_lock_irqsave(&isi_card[card].card_lock, flags);
423 for (retries = 0; retries < 100; retries++) {
424 if (inw(base + 0xe) & 0x1)
425 break;
426 udelay(2);
427 }
428 if (retries >= 100)
429 goto unlock;
430
431 tty = tty_port_tty_get(&port->port);
432 if (tty == NULL)
433 goto put_unlock;
434
435 for (; count > 0; count--, port++) {
436 /* port not active or tx disabled to force flow control */
437 if (!tty_port_initialized(&port->port) ||
438 !(port->status & ISI_TXOK))
439 continue;
440
441 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
442 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
443 continue;
444
445 if (!(inw(base + 0x02) & (1 << port->channel)))
446 continue;
447
448 pr_debug("txing %d bytes, port%d.\n",
449 txcount, port->channel + 1);
450 outw((port->channel << isi_card[card].shift_count) | txcount,
451 base);
452 residue = NO;
453 wrd = 0;
454 while (1) {
455 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
456 - port->xmit_tail));
457 if (residue == YES) {
458 residue = NO;
459 if (cnt > 0) {
460 wrd |= (port->port.xmit_buf[port->xmit_tail]
461 << 8);
462 port->xmit_tail = (port->xmit_tail + 1)
463 & (SERIAL_XMIT_SIZE - 1);
464 port->xmit_cnt--;
465 txcount--;
466 cnt--;
467 outw(wrd, base);
468 } else {
469 outw(wrd, base);
470 break;
471 }
472 }
473 if (cnt <= 0)
474 break;
475 word_count = cnt >> 1;
476 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
477 port->xmit_tail = (port->xmit_tail
478 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
479 txcount -= (word_count << 1);
480 port->xmit_cnt -= (word_count << 1);
481 if (cnt & 0x0001) {
482 residue = YES;
483 wrd = port->port.xmit_buf[port->xmit_tail];
484 port->xmit_tail = (port->xmit_tail + 1)
485 & (SERIAL_XMIT_SIZE - 1);
486 port->xmit_cnt--;
487 txcount--;
488 }
489 }
490
491 InterruptTheCard(base);
492 if (port->xmit_cnt <= 0)
493 port->status &= ~ISI_TXOK;
494 if (port->xmit_cnt <= WAKEUP_CHARS)
495 tty_wakeup(tty);
496 }
497
498 put_unlock:
499 tty_kref_put(tty);
500 unlock:
501 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
502 /* schedule another tx for hopefully in about 10ms */
503 sched_again:
504 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
505 }
506
507 /*
508 * Main interrupt handler routine
509 */
510
511 static irqreturn_t isicom_interrupt(int irq, void *dev_id)
512 {
513 struct isi_board *card = dev_id;
514 struct isi_port *port;
515 struct tty_struct *tty;
516 unsigned long base;
517 u16 header, word_count, count, channel;
518 short byte_count;
519 unsigned char *rp;
520
521 if (!card || !(card->status & FIRMWARE_LOADED))
522 return IRQ_NONE;
523
524 base = card->base;
525
526 /* did the card interrupt us? */
527 if (!(inw(base + 0x0e) & 0x02))
528 return IRQ_NONE;
529
530 spin_lock(&card->card_lock);
531
532 /*
533 * disable any interrupts from the PCI card and lower the
534 * interrupt line
535 */
536 outw(0x8000, base+0x04);
537 ClearInterrupt(base);
538
539 inw(base); /* get the dummy word out */
540 header = inw(base);
541 channel = (header & 0x7800) >> card->shift_count;
542 byte_count = header & 0xff;
543
544 if (channel + 1 > card->port_count) {
545 pr_warn("%s(0x%lx): %d(channel) > port_count\n",
546 __func__, base, channel + 1);
547 outw(0x0000, base+0x04); /* enable interrupts */
548 spin_unlock(&card->card_lock);
549 return IRQ_HANDLED;
550 }
551 port = card->ports + channel;
552 if (!tty_port_initialized(&port->port)) {
553 outw(0x0000, base+0x04); /* enable interrupts */
554 spin_unlock(&card->card_lock);
555 return IRQ_HANDLED;
556 }
557
558 tty = tty_port_tty_get(&port->port);
559 if (tty == NULL) {
560 word_count = byte_count >> 1;
561 while (byte_count > 1) {
562 inw(base);
563 byte_count -= 2;
564 }
565 if (byte_count & 0x01)
566 inw(base);
567 outw(0x0000, base+0x04); /* enable interrupts */
568 spin_unlock(&card->card_lock);
569 return IRQ_HANDLED;
570 }
571
572 if (header & 0x8000) { /* Status Packet */
573 header = inw(base);
574 switch (header & 0xff) {
575 case 0: /* Change in EIA signals */
576 if (tty_port_check_carrier(&port->port)) {
577 if (port->status & ISI_DCD) {
578 if (!(header & ISI_DCD)) {
579 /* Carrier has been lost */
580 pr_debug("%s: DCD->low.\n",
581 __func__);
582 port->status &= ~ISI_DCD;
583 tty_hangup(tty);
584 }
585 } else if (header & ISI_DCD) {
586 /* Carrier has been detected */
587 pr_debug("%s: DCD->high.\n",
588 __func__);
589 port->status |= ISI_DCD;
590 wake_up_interruptible(&port->port.open_wait);
591 }
592 } else {
593 if (header & ISI_DCD)
594 port->status |= ISI_DCD;
595 else
596 port->status &= ~ISI_DCD;
597 }
598
599 if (tty_port_cts_enabled(&port->port)) {
600 if (tty->hw_stopped) {
601 if (header & ISI_CTS) {
602 tty->hw_stopped = 0;
603 /* start tx ing */
604 port->status |= (ISI_TXOK
605 | ISI_CTS);
606 tty_wakeup(tty);
607 }
608 } else if (!(header & ISI_CTS)) {
609 tty->hw_stopped = 1;
610 /* stop tx ing */
611 port->status &= ~(ISI_TXOK | ISI_CTS);
612 }
613 } else {
614 if (header & ISI_CTS)
615 port->status |= ISI_CTS;
616 else
617 port->status &= ~ISI_CTS;
618 }
619
620 if (header & ISI_DSR)
621 port->status |= ISI_DSR;
622 else
623 port->status &= ~ISI_DSR;
624
625 if (header & ISI_RI)
626 port->status |= ISI_RI;
627 else
628 port->status &= ~ISI_RI;
629
630 break;
631
632 case 1: /* Received Break !!! */
633 tty_insert_flip_char(&port->port, 0, TTY_BREAK);
634 if (port->port.flags & ASYNC_SAK)
635 do_SAK(tty);
636 tty_flip_buffer_push(&port->port);
637 break;
638
639 case 2: /* Statistics */
640 pr_debug("%s: stats!!!\n", __func__);
641 break;
642
643 default:
644 pr_debug("%s: Unknown code in status packet.\n",
645 __func__);
646 break;
647 }
648 } else { /* Data Packet */
649 count = tty_prepare_flip_string(&port->port, &rp,
650 byte_count & ~1);
651 pr_debug("%s: Can rx %d of %d bytes.\n",
652 __func__, count, byte_count);
653 word_count = count >> 1;
654 insw(base, rp, word_count);
655 byte_count -= (word_count << 1);
656 if (count & 0x0001) {
657 tty_insert_flip_char(&port->port, inw(base) & 0xff,
658 TTY_NORMAL);
659 byte_count -= 2;
660 }
661 if (byte_count > 0) {
662 pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
663 __func__, base, channel + 1);
664 /* drain out unread xtra data */
665 while (byte_count > 0) {
666 inw(base);
667 byte_count -= 2;
668 }
669 }
670 tty_flip_buffer_push(&port->port);
671 }
672 outw(0x0000, base+0x04); /* enable interrupts */
673 spin_unlock(&card->card_lock);
674 tty_kref_put(tty);
675
676 return IRQ_HANDLED;
677 }
678
679 static void isicom_config_port(struct tty_struct *tty)
680 {
681 struct isi_port *port = tty->driver_data;
682 struct isi_board *card = port->card;
683 unsigned long baud;
684 unsigned long base = card->base;
685 u16 channel_setup, channel = port->channel,
686 shift_count = card->shift_count;
687 unsigned char flow_ctrl;
688
689 /* FIXME: Switch to new tty baud API */
690 baud = C_BAUD(tty);
691 if (baud & CBAUDEX) {
692 baud &= ~CBAUDEX;
693
694 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
695 * then the card is programmed for 57.6Kbps or 115Kbps
696 * respectively.
697 */
698
699 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
700 if (baud < 1 || baud > 4)
701 tty->termios.c_cflag &= ~CBAUDEX;
702 else
703 baud += 15;
704 }
705 if (baud == 15) {
706
707 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
708 * by the set_serial_info ioctl ... this is done by
709 * the 'setserial' utility.
710 */
711
712 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
713 baud++; /* 57.6 Kbps */
714 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
715 baud += 2; /* 115 Kbps */
716 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
717 baud += 3; /* 230 kbps*/
718 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
719 baud += 4; /* 460 kbps*/
720 }
721 if (linuxb_to_isib[baud] == -1) {
722 /* hang up */
723 drop_dtr(port);
724 return;
725 } else
726 raise_dtr(port);
727
728 if (WaitTillCardIsFree(base) == 0) {
729 outw(0x8000 | (channel << shift_count) | 0x03, base);
730 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
731 channel_setup = 0;
732 switch (C_CSIZE(tty)) {
733 case CS5:
734 channel_setup |= ISICOM_CS5;
735 break;
736 case CS6:
737 channel_setup |= ISICOM_CS6;
738 break;
739 case CS7:
740 channel_setup |= ISICOM_CS7;
741 break;
742 case CS8:
743 channel_setup |= ISICOM_CS8;
744 break;
745 }
746
747 if (C_CSTOPB(tty))
748 channel_setup |= ISICOM_2SB;
749 if (C_PARENB(tty)) {
750 channel_setup |= ISICOM_EVPAR;
751 if (C_PARODD(tty))
752 channel_setup |= ISICOM_ODPAR;
753 }
754 outw(channel_setup, base);
755 InterruptTheCard(base);
756 }
757 tty_port_set_check_carrier(&port->port, !C_CLOCAL(tty));
758
759 /* flow control settings ...*/
760 flow_ctrl = 0;
761 tty_port_set_cts_flow(&port->port, C_CRTSCTS(tty));
762 if (C_CRTSCTS(tty))
763 flow_ctrl |= ISICOM_CTSRTS;
764 if (I_IXON(tty))
765 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
766 if (I_IXOFF(tty))
767 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
768
769 if (WaitTillCardIsFree(base) == 0) {
770 outw(0x8000 | (channel << shift_count) | 0x04, base);
771 outw(flow_ctrl << 8 | 0x05, base);
772 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
773 InterruptTheCard(base);
774 }
775
776 /* rx enabled -> enable port for rx on the card */
777 if (C_CREAD(tty)) {
778 card->port_status |= (1 << channel);
779 outw(card->port_status, base + 0x02);
780 }
781 }
782
783 /* open et all */
784
785 static inline void isicom_setup_board(struct isi_board *bp)
786 {
787 int channel;
788 struct isi_port *port;
789
790 bp->count++;
791 if (!(bp->status & BOARD_INIT)) {
792 port = bp->ports;
793 for (channel = 0; channel < bp->port_count; channel++, port++)
794 drop_dtr_rts(port);
795 }
796 bp->status |= BOARD_ACTIVE | BOARD_INIT;
797 }
798
799 /* Activate and thus setup board are protected from races against shutdown
800 by the tty_port mutex */
801
802 static int isicom_activate(struct tty_port *tport, struct tty_struct *tty)
803 {
804 struct isi_port *port = container_of(tport, struct isi_port, port);
805 struct isi_board *card = port->card;
806 unsigned long flags;
807
808 if (tty_port_alloc_xmit_buf(tport) < 0)
809 return -ENOMEM;
810
811 spin_lock_irqsave(&card->card_lock, flags);
812 isicom_setup_board(card);
813
814 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
815
816 /* discard any residual data */
817 if (WaitTillCardIsFree(card->base) == 0) {
818 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
819 card->base);
820 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
821 InterruptTheCard(card->base);
822 }
823 isicom_config_port(tty);
824 spin_unlock_irqrestore(&card->card_lock, flags);
825
826 return 0;
827 }
828
829 static int isicom_carrier_raised(struct tty_port *port)
830 {
831 struct isi_port *ip = container_of(port, struct isi_port, port);
832 return (ip->status & ISI_DCD)?1 : 0;
833 }
834
835 static struct tty_port *isicom_find_port(struct tty_struct *tty)
836 {
837 struct isi_port *port;
838 struct isi_board *card;
839 unsigned int board;
840 int line = tty->index;
841
842 board = BOARD(line);
843 card = &isi_card[board];
844
845 if (!(card->status & FIRMWARE_LOADED))
846 return NULL;
847
848 /* open on a port greater than the port count for the card !!! */
849 if (line > ((board * 16) + card->port_count - 1))
850 return NULL;
851
852 port = &isi_ports[line];
853 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
854 return NULL;
855
856 return &port->port;
857 }
858
859 static int isicom_open(struct tty_struct *tty, struct file *filp)
860 {
861 struct isi_port *port;
862 struct tty_port *tport;
863
864 tport = isicom_find_port(tty);
865 if (tport == NULL)
866 return -ENODEV;
867 port = container_of(tport, struct isi_port, port);
868
869 tty->driver_data = port;
870 return tty_port_open(tport, tty, filp);
871 }
872
873 /* close et all */
874
875 /* card->lock HAS to be held */
876 static void isicom_shutdown_port(struct isi_port *port)
877 {
878 struct isi_board *card = port->card;
879
880 if (--card->count < 0) {
881 pr_debug("%s: bad board(0x%lx) count %d.\n",
882 __func__, card->base, card->count);
883 card->count = 0;
884 }
885 /* last port was closed, shutdown that board too */
886 if (!card->count)
887 card->status &= BOARD_ACTIVE;
888 }
889
890 static void isicom_flush_buffer(struct tty_struct *tty)
891 {
892 struct isi_port *port = tty->driver_data;
893 struct isi_board *card = port->card;
894 unsigned long flags;
895
896 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
897 return;
898
899 spin_lock_irqsave(&card->card_lock, flags);
900 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
901 spin_unlock_irqrestore(&card->card_lock, flags);
902
903 tty_wakeup(tty);
904 }
905
906 static void isicom_shutdown(struct tty_port *port)
907 {
908 struct isi_port *ip = container_of(port, struct isi_port, port);
909 struct isi_board *card = ip->card;
910 unsigned long flags;
911
912 /* indicate to the card that no more data can be received
913 on this port */
914 spin_lock_irqsave(&card->card_lock, flags);
915 card->port_status &= ~(1 << ip->channel);
916 outw(card->port_status, card->base + 0x02);
917 isicom_shutdown_port(ip);
918 spin_unlock_irqrestore(&card->card_lock, flags);
919 tty_port_free_xmit_buf(port);
920 }
921
922 static void isicom_close(struct tty_struct *tty, struct file *filp)
923 {
924 struct isi_port *ip = tty->driver_data;
925 struct tty_port *port;
926
927 if (ip == NULL)
928 return;
929
930 port = &ip->port;
931 if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
932 return;
933 tty_port_close(port, tty, filp);
934 }
935
936 /* write et all */
937 static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
938 int count)
939 {
940 struct isi_port *port = tty->driver_data;
941 struct isi_board *card = port->card;
942 unsigned long flags;
943 int cnt, total = 0;
944
945 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
946 return 0;
947
948 spin_lock_irqsave(&card->card_lock, flags);
949
950 while (1) {
951 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
952 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
953 if (cnt <= 0)
954 break;
955
956 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
957 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
958 - 1);
959 port->xmit_cnt += cnt;
960 buf += cnt;
961 count -= cnt;
962 total += cnt;
963 }
964 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
965 port->status |= ISI_TXOK;
966 spin_unlock_irqrestore(&card->card_lock, flags);
967 return total;
968 }
969
970 /* put_char et all */
971 static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
972 {
973 struct isi_port *port = tty->driver_data;
974 struct isi_board *card = port->card;
975 unsigned long flags;
976
977 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
978 return 0;
979
980 spin_lock_irqsave(&card->card_lock, flags);
981 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
982 spin_unlock_irqrestore(&card->card_lock, flags);
983 return 0;
984 }
985
986 port->port.xmit_buf[port->xmit_head++] = ch;
987 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
988 port->xmit_cnt++;
989 spin_unlock_irqrestore(&card->card_lock, flags);
990 return 1;
991 }
992
993 /* flush_chars et all */
994 static void isicom_flush_chars(struct tty_struct *tty)
995 {
996 struct isi_port *port = tty->driver_data;
997
998 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
999 return;
1000
1001 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
1002 !port->port.xmit_buf)
1003 return;
1004
1005 /* this tells the transmitter to consider this port for
1006 data output to the card ... that's the best we can do. */
1007 port->status |= ISI_TXOK;
1008 }
1009
1010 /* write_room et all */
1011 static int isicom_write_room(struct tty_struct *tty)
1012 {
1013 struct isi_port *port = tty->driver_data;
1014 int free;
1015
1016 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1017 return 0;
1018
1019 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1020 if (free < 0)
1021 free = 0;
1022 return free;
1023 }
1024
1025 /* chars_in_buffer et all */
1026 static int isicom_chars_in_buffer(struct tty_struct *tty)
1027 {
1028 struct isi_port *port = tty->driver_data;
1029 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1030 return 0;
1031 return port->xmit_cnt;
1032 }
1033
1034 /* ioctl et all */
1035 static int isicom_send_break(struct tty_struct *tty, int length)
1036 {
1037 struct isi_port *port = tty->driver_data;
1038 struct isi_board *card = port->card;
1039 unsigned long base = card->base;
1040
1041 if (length == -1)
1042 return -EOPNOTSUPP;
1043
1044 if (!lock_card(card))
1045 return -EINVAL;
1046
1047 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1048 outw((length & 0xff) << 8 | 0x00, base);
1049 outw((length & 0xff00u), base);
1050 InterruptTheCard(base);
1051
1052 unlock_card(card);
1053 return 0;
1054 }
1055
1056 static int isicom_tiocmget(struct tty_struct *tty)
1057 {
1058 struct isi_port *port = tty->driver_data;
1059 /* just send the port status */
1060 u16 status = port->status;
1061
1062 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1063 return -ENODEV;
1064
1065 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1066 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1067 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1068 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1069 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1070 ((status & ISI_RI ) ? TIOCM_RI : 0);
1071 }
1072
1073 static int isicom_tiocmset(struct tty_struct *tty,
1074 unsigned int set, unsigned int clear)
1075 {
1076 struct isi_port *port = tty->driver_data;
1077 unsigned long flags;
1078
1079 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1080 return -ENODEV;
1081
1082 spin_lock_irqsave(&port->card->card_lock, flags);
1083 if (set & TIOCM_RTS)
1084 raise_rts(port);
1085 if (set & TIOCM_DTR)
1086 raise_dtr(port);
1087
1088 if (clear & TIOCM_RTS)
1089 drop_rts(port);
1090 if (clear & TIOCM_DTR)
1091 drop_dtr(port);
1092 spin_unlock_irqrestore(&port->card->card_lock, flags);
1093
1094 return 0;
1095 }
1096
1097 static int isicom_set_serial_info(struct tty_struct *tty,
1098 struct serial_struct __user *info)
1099 {
1100 struct isi_port *port = tty->driver_data;
1101 struct serial_struct newinfo;
1102 int reconfig_port;
1103
1104 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
1105 return -EFAULT;
1106
1107 mutex_lock(&port->port.mutex);
1108 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
1109 (newinfo.flags & ASYNC_SPD_MASK));
1110
1111 if (!capable(CAP_SYS_ADMIN)) {
1112 if ((newinfo.close_delay != port->port.close_delay) ||
1113 (newinfo.closing_wait != port->port.closing_wait) ||
1114 ((newinfo.flags & ~ASYNC_USR_MASK) !=
1115 (port->port.flags & ~ASYNC_USR_MASK))) {
1116 mutex_unlock(&port->port.mutex);
1117 return -EPERM;
1118 }
1119 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
1120 (newinfo.flags & ASYNC_USR_MASK));
1121 } else {
1122 port->port.close_delay = newinfo.close_delay;
1123 port->port.closing_wait = newinfo.closing_wait;
1124 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
1125 (newinfo.flags & ASYNC_FLAGS));
1126 }
1127 if (reconfig_port) {
1128 unsigned long flags;
1129 spin_lock_irqsave(&port->card->card_lock, flags);
1130 isicom_config_port(tty);
1131 spin_unlock_irqrestore(&port->card->card_lock, flags);
1132 }
1133 mutex_unlock(&port->port.mutex);
1134 return 0;
1135 }
1136
1137 static int isicom_get_serial_info(struct isi_port *port,
1138 struct serial_struct __user *info)
1139 {
1140 struct serial_struct out_info;
1141
1142 mutex_lock(&port->port.mutex);
1143 memset(&out_info, 0, sizeof(out_info));
1144 /* out_info.type = ? */
1145 out_info.line = port - isi_ports;
1146 out_info.port = port->card->base;
1147 out_info.irq = port->card->irq;
1148 out_info.flags = port->port.flags;
1149 /* out_info.baud_base = ? */
1150 out_info.close_delay = port->port.close_delay;
1151 out_info.closing_wait = port->port.closing_wait;
1152 mutex_unlock(&port->port.mutex);
1153 if (copy_to_user(info, &out_info, sizeof(out_info)))
1154 return -EFAULT;
1155 return 0;
1156 }
1157
1158 static int isicom_ioctl(struct tty_struct *tty,
1159 unsigned int cmd, unsigned long arg)
1160 {
1161 struct isi_port *port = tty->driver_data;
1162 void __user *argp = (void __user *)arg;
1163
1164 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1165 return -ENODEV;
1166
1167 switch (cmd) {
1168 case TIOCGSERIAL:
1169 return isicom_get_serial_info(port, argp);
1170
1171 case TIOCSSERIAL:
1172 return isicom_set_serial_info(tty, argp);
1173
1174 default:
1175 return -ENOIOCTLCMD;
1176 }
1177 return 0;
1178 }
1179
1180 /* set_termios et all */
1181 static void isicom_set_termios(struct tty_struct *tty,
1182 struct ktermios *old_termios)
1183 {
1184 struct isi_port *port = tty->driver_data;
1185 unsigned long flags;
1186
1187 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1188 return;
1189
1190 if (tty->termios.c_cflag == old_termios->c_cflag &&
1191 tty->termios.c_iflag == old_termios->c_iflag)
1192 return;
1193
1194 spin_lock_irqsave(&port->card->card_lock, flags);
1195 isicom_config_port(tty);
1196 spin_unlock_irqrestore(&port->card->card_lock, flags);
1197
1198 if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) {
1199 tty->hw_stopped = 0;
1200 isicom_start(tty);
1201 }
1202 }
1203
1204 /* throttle et all */
1205 static void isicom_throttle(struct tty_struct *tty)
1206 {
1207 struct isi_port *port = tty->driver_data;
1208 struct isi_board *card = port->card;
1209
1210 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1211 return;
1212
1213 /* tell the card that this port cannot handle any more data for now */
1214 card->port_status &= ~(1 << port->channel);
1215 outw(card->port_status, card->base + 0x02);
1216 }
1217
1218 /* unthrottle et all */
1219 static void isicom_unthrottle(struct tty_struct *tty)
1220 {
1221 struct isi_port *port = tty->driver_data;
1222 struct isi_board *card = port->card;
1223
1224 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1225 return;
1226
1227 /* tell the card that this port is ready to accept more data */
1228 card->port_status |= (1 << port->channel);
1229 outw(card->port_status, card->base + 0x02);
1230 }
1231
1232 /* stop et all */
1233 static void isicom_stop(struct tty_struct *tty)
1234 {
1235 struct isi_port *port = tty->driver_data;
1236
1237 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1238 return;
1239
1240 /* this tells the transmitter not to consider this port for
1241 data output to the card. */
1242 port->status &= ~ISI_TXOK;
1243 }
1244
1245 /* start et all */
1246 static void isicom_start(struct tty_struct *tty)
1247 {
1248 struct isi_port *port = tty->driver_data;
1249
1250 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1251 return;
1252
1253 /* this tells the transmitter to consider this port for
1254 data output to the card. */
1255 port->status |= ISI_TXOK;
1256 }
1257
1258 static void isicom_hangup(struct tty_struct *tty)
1259 {
1260 struct isi_port *port = tty->driver_data;
1261
1262 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1263 return;
1264 tty_port_hangup(&port->port);
1265 }
1266
1267
1268 /*
1269 * Driver init and deinit functions
1270 */
1271
1272 static const struct tty_operations isicom_ops = {
1273 .open = isicom_open,
1274 .close = isicom_close,
1275 .write = isicom_write,
1276 .put_char = isicom_put_char,
1277 .flush_chars = isicom_flush_chars,
1278 .write_room = isicom_write_room,
1279 .chars_in_buffer = isicom_chars_in_buffer,
1280 .ioctl = isicom_ioctl,
1281 .set_termios = isicom_set_termios,
1282 .throttle = isicom_throttle,
1283 .unthrottle = isicom_unthrottle,
1284 .stop = isicom_stop,
1285 .start = isicom_start,
1286 .hangup = isicom_hangup,
1287 .flush_buffer = isicom_flush_buffer,
1288 .tiocmget = isicom_tiocmget,
1289 .tiocmset = isicom_tiocmset,
1290 .break_ctl = isicom_send_break,
1291 };
1292
1293 static const struct tty_port_operations isicom_port_ops = {
1294 .carrier_raised = isicom_carrier_raised,
1295 .dtr_rts = isicom_dtr_rts,
1296 .activate = isicom_activate,
1297 .shutdown = isicom_shutdown,
1298 };
1299
1300 static int reset_card(struct pci_dev *pdev,
1301 const unsigned int card, unsigned int *signature)
1302 {
1303 struct isi_board *board = pci_get_drvdata(pdev);
1304 unsigned long base = board->base;
1305 unsigned int sig, portcount = 0;
1306 int retval = 0;
1307
1308 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1309 base);
1310
1311 inw(base + 0x8);
1312
1313 msleep(10);
1314
1315 outw(0, base + 0x8); /* Reset */
1316
1317 msleep(1000);
1318
1319 sig = inw(base + 0x4) & 0xff;
1320
1321 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1322 sig != 0xee) {
1323 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1324 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1325 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
1326 retval = -EIO;
1327 goto end;
1328 }
1329
1330 msleep(10);
1331
1332 portcount = inw(base + 0x2);
1333 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
1334 portcount != 8 && portcount != 16)) {
1335 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
1336 card + 1);
1337 retval = -EIO;
1338 goto end;
1339 }
1340
1341 switch (sig) {
1342 case 0xa5:
1343 case 0xbb:
1344 case 0xdd:
1345 board->port_count = (portcount == 4) ? 4 : 8;
1346 board->shift_count = 12;
1347 break;
1348 case 0xcc:
1349 case 0xee:
1350 board->port_count = 16;
1351 board->shift_count = 11;
1352 break;
1353 }
1354 dev_info(&pdev->dev, "-Done\n");
1355 *signature = sig;
1356
1357 end:
1358 return retval;
1359 }
1360
1361 static int load_firmware(struct pci_dev *pdev,
1362 const unsigned int index, const unsigned int signature)
1363 {
1364 struct isi_board *board = pci_get_drvdata(pdev);
1365 const struct firmware *fw;
1366 unsigned long base = board->base;
1367 unsigned int a;
1368 u16 word_count, status;
1369 int retval = -EIO;
1370 char *name;
1371 u8 *data;
1372
1373 struct stframe {
1374 u16 addr;
1375 u16 count;
1376 u8 data[0];
1377 } *frame;
1378
1379 switch (signature) {
1380 case 0xa5:
1381 name = "isi608.bin";
1382 break;
1383 case 0xbb:
1384 name = "isi608em.bin";
1385 break;
1386 case 0xcc:
1387 name = "isi616em.bin";
1388 break;
1389 case 0xdd:
1390 name = "isi4608.bin";
1391 break;
1392 case 0xee:
1393 name = "isi4616.bin";
1394 break;
1395 default:
1396 dev_err(&pdev->dev, "Unknown signature.\n");
1397 goto end;
1398 }
1399
1400 retval = request_firmware(&fw, name, &pdev->dev);
1401 if (retval)
1402 goto end;
1403
1404 retval = -EIO;
1405
1406 for (frame = (struct stframe *)fw->data;
1407 frame < (struct stframe *)(fw->data + fw->size);
1408 frame = (struct stframe *)((u8 *)(frame + 1) +
1409 frame->count)) {
1410 if (WaitTillCardIsFree(base))
1411 goto errrelfw;
1412
1413 outw(0xf0, base); /* start upload sequence */
1414 outw(0x00, base);
1415 outw(frame->addr, base); /* lsb of address */
1416
1417 word_count = frame->count / 2 + frame->count % 2;
1418 outw(word_count, base);
1419 InterruptTheCard(base);
1420
1421 udelay(100); /* 0x2f */
1422
1423 if (WaitTillCardIsFree(base))
1424 goto errrelfw;
1425
1426 status = inw(base + 0x4);
1427 if (status != 0) {
1428 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
1429 "Address:0x%x\n"
1430 "Count:0x%x\n"
1431 "Status:0x%x\n",
1432 index + 1, frame->addr, frame->count, status);
1433 goto errrelfw;
1434 }
1435 outsw(base, frame->data, word_count);
1436
1437 InterruptTheCard(base);
1438
1439 udelay(50); /* 0x0f */
1440
1441 if (WaitTillCardIsFree(base))
1442 goto errrelfw;
1443
1444 status = inw(base + 0x4);
1445 if (status != 0) {
1446 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1447 "Status:0x%x\n", index + 1, status);
1448 goto errrelfw;
1449 }
1450 }
1451
1452 /* XXX: should we test it by reading it back and comparing with original like
1453 * in load firmware package? */
1454 for (frame = (struct stframe *)fw->data;
1455 frame < (struct stframe *)(fw->data + fw->size);
1456 frame = (struct stframe *)((u8 *)(frame + 1) +
1457 frame->count)) {
1458 if (WaitTillCardIsFree(base))
1459 goto errrelfw;
1460
1461 outw(0xf1, base); /* start download sequence */
1462 outw(0x00, base);
1463 outw(frame->addr, base); /* lsb of address */
1464
1465 word_count = (frame->count >> 1) + frame->count % 2;
1466 outw(word_count + 1, base);
1467 InterruptTheCard(base);
1468
1469 udelay(50); /* 0xf */
1470
1471 if (WaitTillCardIsFree(base))
1472 goto errrelfw;
1473
1474 status = inw(base + 0x4);
1475 if (status != 0) {
1476 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
1477 "Address:0x%x\n"
1478 "Count:0x%x\n"
1479 "Status: 0x%x\n",
1480 index + 1, frame->addr, frame->count, status);
1481 goto errrelfw;
1482 }
1483
1484 data = kmalloc(word_count * 2, GFP_KERNEL);
1485 if (data == NULL) {
1486 dev_err(&pdev->dev, "Card%d, firmware upload "
1487 "failed, not enough memory\n", index + 1);
1488 goto errrelfw;
1489 }
1490 inw(base);
1491 insw(base, data, word_count);
1492 InterruptTheCard(base);
1493
1494 for (a = 0; a < frame->count; a++)
1495 if (data[a] != frame->data[a]) {
1496 kfree(data);
1497 dev_err(&pdev->dev, "Card%d, firmware upload "
1498 "failed\n", index + 1);
1499 goto errrelfw;
1500 }
1501 kfree(data);
1502
1503 udelay(50); /* 0xf */
1504
1505 if (WaitTillCardIsFree(base))
1506 goto errrelfw;
1507
1508 status = inw(base + 0x4);
1509 if (status != 0) {
1510 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1511 "Card Status:0x%x\n", index + 1, status);
1512 goto errrelfw;
1513 }
1514 }
1515
1516 /* xfer ctrl */
1517 if (WaitTillCardIsFree(base))
1518 goto errrelfw;
1519
1520 outw(0xf2, base);
1521 outw(0x800, base);
1522 outw(0x0, base);
1523 outw(0x0, base);
1524 InterruptTheCard(base);
1525 outw(0x0, base + 0x4); /* for ISI4608 cards */
1526
1527 board->status |= FIRMWARE_LOADED;
1528 retval = 0;
1529
1530 errrelfw:
1531 release_firmware(fw);
1532 end:
1533 return retval;
1534 }
1535
1536 /*
1537 * Insmod can set static symbols so keep these static
1538 */
1539 static unsigned int card_count;
1540
1541 static int isicom_probe(struct pci_dev *pdev,
1542 const struct pci_device_id *ent)
1543 {
1544 unsigned int uninitialized_var(signature), index;
1545 int retval = -EPERM;
1546 struct isi_board *board = NULL;
1547
1548 if (card_count >= BOARD_COUNT)
1549 goto err;
1550
1551 retval = pci_enable_device(pdev);
1552 if (retval) {
1553 dev_err(&pdev->dev, "failed to enable\n");
1554 goto err;
1555 }
1556
1557 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1558
1559 /* allot the first empty slot in the array */
1560 for (index = 0; index < BOARD_COUNT; index++) {
1561 if (isi_card[index].base == 0) {
1562 board = &isi_card[index];
1563 break;
1564 }
1565 }
1566 if (index == BOARD_COUNT) {
1567 retval = -ENODEV;
1568 goto err_disable;
1569 }
1570
1571 board->index = index;
1572 board->base = pci_resource_start(pdev, 3);
1573 board->irq = pdev->irq;
1574 card_count++;
1575
1576 pci_set_drvdata(pdev, board);
1577
1578 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1579 if (retval) {
1580 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1581 "will be disabled.\n", board->base, board->base + 15,
1582 index + 1);
1583 retval = -EBUSY;
1584 goto errdec;
1585 }
1586
1587 retval = request_irq(board->irq, isicom_interrupt,
1588 IRQF_SHARED, ISICOM_NAME, board);
1589 if (retval < 0) {
1590 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1591 "Card%d will be disabled.\n", board->irq, index + 1);
1592 goto errunrr;
1593 }
1594
1595 retval = reset_card(pdev, index, &signature);
1596 if (retval < 0)
1597 goto errunri;
1598
1599 retval = load_firmware(pdev, index, signature);
1600 if (retval < 0)
1601 goto errunri;
1602
1603 for (index = 0; index < board->port_count; index++) {
1604 struct tty_port *tport = &board->ports[index].port;
1605 tty_port_init(tport);
1606 tport->ops = &isicom_port_ops;
1607 tport->close_delay = 50 * HZ/100;
1608 tport->closing_wait = 3000 * HZ/100;
1609 tty_port_register_device(tport, isicom_normal,
1610 board->index * 16 + index, &pdev->dev);
1611 }
1612
1613 return 0;
1614
1615 errunri:
1616 free_irq(board->irq, board);
1617 errunrr:
1618 pci_release_region(pdev, 3);
1619 errdec:
1620 board->base = 0;
1621 card_count--;
1622 err_disable:
1623 pci_disable_device(pdev);
1624 err:
1625 return retval;
1626 }
1627
1628 static void isicom_remove(struct pci_dev *pdev)
1629 {
1630 struct isi_board *board = pci_get_drvdata(pdev);
1631 unsigned int i;
1632
1633 for (i = 0; i < board->port_count; i++) {
1634 tty_unregister_device(isicom_normal, board->index * 16 + i);
1635 tty_port_destroy(&board->ports[i].port);
1636 }
1637
1638 free_irq(board->irq, board);
1639 pci_release_region(pdev, 3);
1640 board->base = 0;
1641 card_count--;
1642 pci_disable_device(pdev);
1643 }
1644
1645 static int __init isicom_init(void)
1646 {
1647 int retval, idx, channel;
1648 struct isi_port *port;
1649
1650 for (idx = 0; idx < BOARD_COUNT; idx++) {
1651 port = &isi_ports[idx * 16];
1652 isi_card[idx].ports = port;
1653 spin_lock_init(&isi_card[idx].card_lock);
1654 for (channel = 0; channel < 16; channel++, port++) {
1655 port->magic = ISICOM_MAGIC;
1656 port->card = &isi_card[idx];
1657 port->channel = channel;
1658 port->status = 0;
1659 /* . . . */
1660 }
1661 isi_card[idx].base = 0;
1662 isi_card[idx].irq = 0;
1663 }
1664
1665 /* tty driver structure initialization */
1666 isicom_normal = alloc_tty_driver(PORT_COUNT);
1667 if (!isicom_normal) {
1668 retval = -ENOMEM;
1669 goto error;
1670 }
1671
1672 isicom_normal->name = "ttyM";
1673 isicom_normal->major = ISICOM_NMAJOR;
1674 isicom_normal->minor_start = 0;
1675 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1676 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1677 isicom_normal->init_termios = tty_std_termios;
1678 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1679 CLOCAL;
1680 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
1681 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
1682 tty_set_operations(isicom_normal, &isicom_ops);
1683
1684 retval = tty_register_driver(isicom_normal);
1685 if (retval) {
1686 pr_debug("Couldn't register the dialin driver\n");
1687 goto err_puttty;
1688 }
1689
1690 retval = pci_register_driver(&isicom_driver);
1691 if (retval < 0) {
1692 pr_err("Unable to register pci driver.\n");
1693 goto err_unrtty;
1694 }
1695
1696 mod_timer(&tx, jiffies + 1);
1697
1698 return 0;
1699 err_unrtty:
1700 tty_unregister_driver(isicom_normal);
1701 err_puttty:
1702 put_tty_driver(isicom_normal);
1703 error:
1704 return retval;
1705 }
1706
1707 static void __exit isicom_exit(void)
1708 {
1709 del_timer_sync(&tx);
1710
1711 pci_unregister_driver(&isicom_driver);
1712 tty_unregister_driver(isicom_normal);
1713 put_tty_driver(isicom_normal);
1714 }
1715
1716 module_init(isicom_init);
1717 module_exit(isicom_exit);
1718
1719 MODULE_AUTHOR("MultiTech");
1720 MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1721 MODULE_LICENSE("GPL");
1722 MODULE_FIRMWARE("isi608.bin");
1723 MODULE_FIRMWARE("isi608em.bin");
1724 MODULE_FIRMWARE("isi616em.bin");
1725 MODULE_FIRMWARE("isi4608.bin");
1726 MODULE_FIRMWARE("isi4616.bin");
Linux with added FPC-III support