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[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / char / isicom.c
blob621d1184673c72eac2779338c620a549dd8f470a
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
10 * 1/9/98 alan@lxorguk.ukuu.org.uk
11 * Merge to 2.0.x kernel tree
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
16 * 9/12/98 alan@lxorguk.ukuu.org.uk
17 * Rough port to 2.1.x
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.
25 * This is to prevent the firmware
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
36 * when the last port on the card is
37 * closed.
38 *
39 * 10/5/00 sameer Signal mask setup command added
40 * to isicom_setup_port and
41 * isicom_shutdown_port.
42 *
43 * 24/5/00 sameer The driver is now SMP aware.
44 *
45 *
46 * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
47 *
48 *
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 *
55 * 11/04/01 Kevin Fixed firmware load problem with
56 * ISIHP-4X card
57 *
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
67 * info during insmod as well as module
68 * listing by lsmod.
69 *
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.
78 *
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 *
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
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 *
98 * To use this driver you also need the support package. You
99 * can find this in RPM format on
100 * ftp://ftp.linux.org.uk/pub/linux/alan
101 *
102 * You can find the original tools for this direct from Multitech
103 * ftp://ftp.multitech.com/ISI-Cards/
104 *
105 * Having installed the cards the module options (/etc/modprobe.conf)
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
112 * Merge testing
113 * 64-bit verification
114 */
115
116 #include <linux/module.h>
117 #include <linux/firmware.h>
118 #include <linux/kernel.h>
119 #include <linux/tty.h>
120 #include <linux/tty_flip.h>
121 #include <linux/termios.h>
122 #include <linux/fs.h>
123 #include <linux/sched.h>
124 #include <linux/serial.h>
125 #include <linux/mm.h>
126 #include <linux/interrupt.h>
127 #include <linux/timer.h>
128 #include <linux/delay.h>
129 #include <linux/ioport.h>
130
131 #include <linux/uaccess.h>
132 #include <linux/io.h>
133 #include <asm/system.h>
134
135 #include <linux/pci.h>
136
137 #include <linux/isicom.h>
138
139 #define InterruptTheCard(base) outw(0, (base) + 0xc)
140 #define ClearInterrupt(base) inw((base) + 0x0a)
141
142 #define pr_dbg(str...) pr_debug("ISICOM: " str)
143 #ifdef DEBUG
144 #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
145 #else
146 #define isicom_paranoia_check(a, b, c) 0
147 #endif
148
149 static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
150 static void __devexit isicom_remove(struct pci_dev *);
151
152 static struct pci_device_id isicom_pci_tbl[] = {
153 { PCI_DEVICE(VENDOR_ID, 0x2028) },
154 { PCI_DEVICE(VENDOR_ID, 0x2051) },
155 { PCI_DEVICE(VENDOR_ID, 0x2052) },
156 { PCI_DEVICE(VENDOR_ID, 0x2053) },
157 { PCI_DEVICE(VENDOR_ID, 0x2054) },
158 { PCI_DEVICE(VENDOR_ID, 0x2055) },
159 { PCI_DEVICE(VENDOR_ID, 0x2056) },
160 { PCI_DEVICE(VENDOR_ID, 0x2057) },
161 { PCI_DEVICE(VENDOR_ID, 0x2058) },
162 { 0 }
163 };
164 MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
165
166 static struct pci_driver isicom_driver = {
167 .name = "isicom",
168 .id_table = isicom_pci_tbl,
169 .probe = isicom_probe,
170 .remove = __devexit_p(isicom_remove)
171 };
172
173 static int prev_card = 3; /* start servicing isi_card[0] */
174 static struct tty_driver *isicom_normal;
175
176 static void isicom_tx(unsigned long _data);
177 static void isicom_start(struct tty_struct *tty);
178
179 static DEFINE_TIMER(tx, isicom_tx, 0, 0);
180
181 /* baud index mappings from linux defns to isi */
182
183 static signed char linuxb_to_isib[] = {
184 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21
185 };
186
187 struct isi_board {
188 unsigned long base;
189 int irq;
190 unsigned char port_count;
191 unsigned short status;
192 unsigned short port_status; /* each bit for each port */
193 unsigned short shift_count;
194 struct isi_port *ports;
195 signed char count;
196 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
197 unsigned long flags;
198 unsigned int index;
199 };
200
201 struct isi_port {
202 unsigned short magic;
203 struct tty_port port;
204 u16 channel;
205 u16 status;
206 struct isi_board *card;
207 unsigned char *xmit_buf;
208 int xmit_head;
209 int xmit_tail;
210 int xmit_cnt;
211 };
212
213 static struct isi_board isi_card[BOARD_COUNT];
214 static struct isi_port isi_ports[PORT_COUNT];
215
216 /*
217 * Locking functions for card level locking. We need to own both
218 * the kernel lock for the card and have the card in a position that
219 * it wants to talk.
220 */
221
222 static inline int WaitTillCardIsFree(unsigned long base)
223 {
224 unsigned int count = 0;
225 unsigned int a = in_atomic(); /* do we run under spinlock? */
226
227 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
228 if (a)
229 mdelay(1);
230 else
231 msleep(1);
232
233 return !(inw(base + 0xe) & 0x1);
234 }
235
236 static int lock_card(struct isi_board *card)
237 {
238 unsigned long base = card->base;
239 unsigned int retries, a;
240
241 for (retries = 0; retries < 10; retries++) {
242 spin_lock_irqsave(&card->card_lock, card->flags);
243 for (a = 0; a < 10; a++) {
244 if (inw(base + 0xe) & 0x1)
245 return 1;
246 udelay(10);
247 }
248 spin_unlock_irqrestore(&card->card_lock, card->flags);
249 msleep(10);
250 }
251 printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n",
252 card->base);
253
254 return 0; /* Failed to acquire the card! */
255 }
256
257 static 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 */
265
266 /* card->lock HAS to be held */
267 static void raise_dtr(struct isi_port *port)
268 {
269 struct isi_board *card = port->card;
270 unsigned long base = card->base;
271 u16 channel = port->channel;
272
273 if (WaitTillCardIsFree(base))
274 return;
275
276 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
277 outw(0x0504, base);
278 InterruptTheCard(base);
279 port->status |= ISI_DTR;
280 }
281
282 /* card->lock HAS to be held */
283 static inline void drop_dtr(struct isi_port *port)
284 {
285 struct isi_board *card = port->card;
286 unsigned long base = card->base;
287 u16 channel = port->channel;
288
289 if (WaitTillCardIsFree(base))
290 return;
291
292 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
293 outw(0x0404, base);
294 InterruptTheCard(base);
295 port->status &= ~ISI_DTR;
296 }
297
298 /* card->lock HAS to be held */
299 static inline void raise_rts(struct isi_port *port)
300 {
301 struct isi_board *card = port->card;
302 unsigned long base = card->base;
303 u16 channel = port->channel;
304
305 if (WaitTillCardIsFree(base))
306 return;
307
308 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
309 outw(0x0a04, base);
310 InterruptTheCard(base);
311 port->status |= ISI_RTS;
312 }
313
314 /* card->lock HAS to be held */
315 static inline void drop_rts(struct isi_port *port)
316 {
317 struct isi_board *card = port->card;
318 unsigned long base = card->base;
319 u16 channel = port->channel;
320
321 if (WaitTillCardIsFree(base))
322 return;
323
324 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
325 outw(0x0804, base);
326 InterruptTheCard(base);
327 port->status &= ~ISI_RTS;
328 }
329
330 /* card->lock MUST NOT be held */
331
332 static void isicom_dtr_rts(struct tty_port *port, int on)
333 {
334 struct isi_port *ip = container_of(port, struct isi_port, port);
335 struct isi_board *card = ip->card;
336 unsigned long base = card->base;
337 u16 channel = ip->channel;
338
339 if (!lock_card(card))
340 return;
341
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 }
353 unlock_card(card);
354 }
355
356 /* card->lock HAS to be held */
357 static void drop_dtr_rts(struct isi_port *port)
358 {
359 struct isi_board *card = port->card;
360 unsigned long base = card->base;
361 u16 channel = port->channel;
362
363 if (WaitTillCardIsFree(base))
364 return;
365
366 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
367 outw(0x0c04, base);
368 InterruptTheCard(base);
369 port->status &= ~(ISI_RTS | ISI_DTR);
370 }
371
372 /*
373 * ISICOM Driver specific routines ...
374 *
375 */
376
377 static inline int __isicom_paranoia_check(struct isi_port const *port,
378 char *name, const char *routine)
379 {
380 if (!port) {
381 printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for "
382 "dev %s in %s.\n", name, routine);
383 return 1;
384 }
385 if (port->magic != ISICOM_MAGIC) {
386 printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for "
387 "dev %s in %s.\n", name, routine);
388 return 1;
389 }
390
391 return 0;
392 }
393
394 /*
395 * Transmitter.
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
401 static void isicom_tx(unsigned long _data)
402 {
403 unsigned long flags, base;
404 unsigned int retries;
405 short count = (BOARD_COUNT-1), card;
406 short txcount, wrd, residue, word_count, cnt;
407 struct isi_port *port;
408 struct tty_struct *tty;
409
410 /* find next active board */
411 card = (prev_card + 1) & 0x0003;
412 while (count-- > 0) {
413 if (isi_card[card].status & BOARD_ACTIVE)
414 break;
415 card = (card + 1) & 0x0003;
416 }
417 if (!(isi_card[card].status & BOARD_ACTIVE))
418 goto sched_again;
419
420 prev_card = card;
421
422 count = isi_card[card].port_count;
423 port = isi_card[card].ports;
424 base = isi_card[card].base;
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
435 tty = tty_port_tty_get(&port->port);
436 if (tty == NULL)
437 goto put_unlock;
438
439 for (; count > 0; count--, port++) {
440 /* port not active or tx disabled to force flow control */
441 if (!(port->port.flags & ASYNC_INITIALIZED) ||
442 !(port->status & ISI_TXOK))
443 continue;
444
445 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
446 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
447 continue;
448
449 if (!(inw(base + 0x02) & (1 << port->channel)))
450 continue;
451
452 pr_dbg("txing %d bytes, port%d.\n", txcount,
453 port->channel + 1);
454 outw((port->channel << isi_card[card].shift_count) | txcount,
455 base);
456 residue = NO;
457 wrd = 0;
458 while (1) {
459 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
460 - port->xmit_tail));
461 if (residue == YES) {
462 residue = NO;
463 if (cnt > 0) {
464 wrd |= (port->port.xmit_buf[port->xmit_tail]
465 << 8);
466 port->xmit_tail = (port->xmit_tail + 1)
467 & (SERIAL_XMIT_SIZE - 1);
468 port->xmit_cnt--;
469 txcount--;
470 cnt--;
471 outw(wrd, base);
472 } else {
473 outw(wrd, base);
474 break;
475 }
476 }
477 if (cnt <= 0)
478 break;
479 word_count = cnt >> 1;
480 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
481 port->xmit_tail = (port->xmit_tail
482 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
483 txcount -= (word_count << 1);
484 port->xmit_cnt -= (word_count << 1);
485 if (cnt & 0x0001) {
486 residue = YES;
487 wrd = port->port.xmit_buf[port->xmit_tail];
488 port->xmit_tail = (port->xmit_tail + 1)
489 & (SERIAL_XMIT_SIZE - 1);
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)
499 tty_wakeup(tty);
500 }
501
502 put_unlock:
503 tty_kref_put(tty);
504 unlock:
505 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
506 /* schedule another tx for hopefully in about 10ms */
507 sched_again:
508 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
509 }
510
511 /*
512 * Main interrupt handler routine
513 */
514
515 static irqreturn_t isicom_interrupt(int irq, void *dev_id)
516 {
517 struct isi_board *card = dev_id;
518 struct isi_port *port;
519 struct tty_struct *tty;
520 unsigned long base;
521 u16 header, word_count, count, channel;
522 short byte_count;
523 unsigned char *rp;
524
525 if (!card || !(card->status & FIRMWARE_LOADED))
526 return IRQ_NONE;
527
528 base = card->base;
529
530 /* did the card interrupt us? */
531 if (!(inw(base + 0x0e) & 0x02))
532 return IRQ_NONE;
533
534 spin_lock(&card->card_lock);
535
536 /*
537 * disable any interrupts from the PCI card and lower the
538 * interrupt line
539 */
540 outw(0x8000, base+0x04);
541 ClearInterrupt(base);
542
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) {
549 printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): "
550 "%d(channel) > port_count.\n", base, channel+1);
551 outw(0x0000, base+0x04); /* enable interrupts */
552 spin_unlock(&card->card_lock);
553 return IRQ_HANDLED;
554 }
555 port = card->ports + channel;
556 if (!(port->port.flags & ASYNC_INITIALIZED)) {
557 outw(0x0000, base+0x04); /* enable interrupts */
558 spin_unlock(&card->card_lock);
559 return IRQ_HANDLED;
560 }
561
562 tty = tty_port_tty_get(&port->port);
563 if (tty == NULL) {
564 word_count = byte_count >> 1;
565 while (byte_count > 1) {
566 inw(base);
567 byte_count -= 2;
568 }
569 if (byte_count & 0x01)
570 inw(base);
571 outw(0x0000, base+0x04); /* enable interrupts */
572 spin_unlock(&card->card_lock);
573 return IRQ_HANDLED;
574 }
575
576 if (header & 0x8000) { /* Status Packet */
577 header = inw(base);
578 switch (header & 0xff) {
579 case 0: /* Change in EIA signals */
580 if (port->port.flags & ASYNC_CHECK_CD) {
581 if (port->status & ISI_DCD) {
582 if (!(header & ISI_DCD)) {
583 /* Carrier has been lost */
584 pr_dbg("interrupt: DCD->low.\n"
585 );
586 port->status &= ~ISI_DCD;
587 tty_hangup(tty);
588 }
589 } else if (header & ISI_DCD) {
590 /* Carrier has been detected */
591 pr_dbg("interrupt: DCD->high.\n");
592 port->status |= ISI_DCD;
593 wake_up_interruptible(&port->port.open_wait);
594 }
595 } else {
596 if (header & ISI_DCD)
597 port->status |= ISI_DCD;
598 else
599 port->status &= ~ISI_DCD;
600 }
601
602 if (port->port.flags & ASYNC_CTS_FLOW) {
603 if (tty->hw_stopped) {
604 if (header & ISI_CTS) {
605 port->port.tty->hw_stopped = 0;
606 /* start tx ing */
607 port->status |= (ISI_TXOK
608 | ISI_CTS);
609 tty_wakeup(tty);
610 }
611 } else if (!(header & ISI_CTS)) {
612 tty->hw_stopped = 1;
613 /* stop tx ing */
614 port->status &= ~(ISI_TXOK | ISI_CTS);
615 }
616 } else {
617 if (header & ISI_CTS)
618 port->status |= ISI_CTS;
619 else
620 port->status &= ~ISI_CTS;
621 }
622
623 if (header & ISI_DSR)
624 port->status |= ISI_DSR;
625 else
626 port->status &= ~ISI_DSR;
627
628 if (header & ISI_RI)
629 port->status |= ISI_RI;
630 else
631 port->status &= ~ISI_RI;
632
633 break;
634
635 case 1: /* Received Break !!! */
636 tty_insert_flip_char(tty, 0, TTY_BREAK);
637 if (port->port.flags & ASYNC_SAK)
638 do_SAK(tty);
639 tty_flip_buffer_push(tty);
640 break;
641
642 case 2: /* Statistics */
643 pr_dbg("isicom_interrupt: stats!!!.\n");
644 break;
645
646 default:
647 pr_dbg("Intr: Unknown code in status packet.\n");
648 break;
649 }
650 } else { /* Data Packet */
651
652 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
653 pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count);
654 word_count = count >> 1;
655 insw(base, rp, word_count);
656 byte_count -= (word_count << 1);
657 if (count & 0x0001) {
658 tty_insert_flip_char(tty, inw(base) & 0xff,
659 TTY_NORMAL);
660 byte_count -= 2;
661 }
662 if (byte_count > 0) {
663 pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping "
664 "bytes...\n", base, channel + 1);
665 /* drain out unread xtra data */
666 while (byte_count > 0) {
667 inw(base);
668 byte_count -= 2;
669 }
670 }
671 tty_flip_buffer_push(tty);
672 }
673 outw(0x0000, base+0x04); /* enable interrupts */
674 spin_unlock(&card->card_lock);
675 tty_kref_put(tty);
676
677 return IRQ_HANDLED;
678 }
679
680 static void isicom_config_port(struct tty_struct *tty)
681 {
682 struct isi_port *port = tty->driver_data;
683 struct isi_board *card = port->card;
684 unsigned long baud;
685 unsigned long base = card->base;
686 u16 channel_setup, channel = port->channel,
687 shift_count = card->shift_count;
688 unsigned char flow_ctrl;
689
690 /* FIXME: Switch to new tty baud API */
691 baud = C_BAUD(tty);
692 if (baud & CBAUDEX) {
693 baud &= ~CBAUDEX;
694
695 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
696 * then the card is programmed for 57.6Kbps or 115Kbps
697 * respectively.
698 */
699
700 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
701 if (baud < 1 || baud > 4)
702 tty->termios->c_cflag &= ~CBAUDEX;
703 else
704 baud += 15;
705 }
706 if (baud == 15) {
707
708 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
709 * by the set_serial_info ioctl ... this is done by
710 * the 'setserial' utility.
711 */
712
713 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
714 baud++; /* 57.6 Kbps */
715 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
716 baud += 2; /* 115 Kbps */
717 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
718 baud += 3; /* 230 kbps*/
719 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
720 baud += 4; /* 460 kbps*/
721 }
722 if (linuxb_to_isib[baud] == -1) {
723 /* hang up */
724 drop_dtr(port);
725 return;
726 } else
727 raise_dtr(port);
728
729 if (WaitTillCardIsFree(base) == 0) {
730 outw(0x8000 | (channel << shift_count) | 0x03, base);
731 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
732 channel_setup = 0;
733 switch (C_CSIZE(tty)) {
734 case CS5:
735 channel_setup |= ISICOM_CS5;
736 break;
737 case CS6:
738 channel_setup |= ISICOM_CS6;
739 break;
740 case CS7:
741 channel_setup |= ISICOM_CS7;
742 break;
743 case CS8:
744 channel_setup |= ISICOM_CS8;
745 break;
746 }
747
748 if (C_CSTOPB(tty))
749 channel_setup |= ISICOM_2SB;
750 if (C_PARENB(tty)) {
751 channel_setup |= ISICOM_EVPAR;
752 if (C_PARODD(tty))
753 channel_setup |= ISICOM_ODPAR;
754 }
755 outw(channel_setup, base);
756 InterruptTheCard(base);
757 }
758 if (C_CLOCAL(tty))
759 port->port.flags &= ~ASYNC_CHECK_CD;
760 else
761 port->port.flags |= ASYNC_CHECK_CD;
762
763 /* flow control settings ...*/
764 flow_ctrl = 0;
765 port->port.flags &= ~ASYNC_CTS_FLOW;
766 if (C_CRTSCTS(tty)) {
767 port->port.flags |= ASYNC_CTS_FLOW;
768 flow_ctrl |= ISICOM_CTSRTS;
769 }
770 if (I_IXON(tty))
771 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
772 if (I_IXOFF(tty))
773 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
774
775 if (WaitTillCardIsFree(base) == 0) {
776 outw(0x8000 | (channel << shift_count) | 0x04, base);
777 outw(flow_ctrl << 8 | 0x05, base);
778 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
779 InterruptTheCard(base);
780 }
781
782 /* rx enabled -> enable port for rx on the card */
783 if (C_CREAD(tty)) {
784 card->port_status |= (1 << channel);
785 outw(card->port_status, base + 0x02);
786 }
787 }
788
789 /* open et all */
790
791 static inline void isicom_setup_board(struct isi_board *bp)
792 {
793 int channel;
794 struct isi_port *port;
795 unsigned long flags;
796
797 spin_lock_irqsave(&bp->card_lock, flags);
798 if (bp->status & BOARD_ACTIVE) {
799 spin_unlock_irqrestore(&bp->card_lock, flags);
800 return;
801 }
802 port = bp->ports;
803 bp->status |= BOARD_ACTIVE;
804 for (channel = 0; channel < bp->port_count; channel++, port++)
805 drop_dtr_rts(port);
806 spin_unlock_irqrestore(&bp->card_lock, flags);
807 }
808
809 static int isicom_setup_port(struct tty_struct *tty)
810 {
811 struct isi_port *port = tty->driver_data;
812 struct isi_board *card = port->card;
813 unsigned long flags;
814
815 if (port->port.flags & ASYNC_INITIALIZED)
816 return 0;
817 if (tty_port_alloc_xmit_buf(&port->port) < 0)
818 return -ENOMEM;
819
820 spin_lock_irqsave(&card->card_lock, flags);
821 clear_bit(TTY_IO_ERROR, &tty->flags);
822 if (port->port.count == 1)
823 card->count++;
824
825 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
826
827 /* discard any residual data */
828 if (WaitTillCardIsFree(card->base) == 0) {
829 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
830 card->base);
831 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
832 InterruptTheCard(card->base);
833 }
834
835 isicom_config_port(tty);
836 port->port.flags |= ASYNC_INITIALIZED;
837 spin_unlock_irqrestore(&card->card_lock, flags);
838
839 return 0;
840 }
841
842 static int isicom_carrier_raised(struct tty_port *port)
843 {
844 struct isi_port *ip = container_of(port, struct isi_port, port);
845 return (ip->status & ISI_DCD)?1 : 0;
846 }
847
848 static int isicom_open(struct tty_struct *tty, struct file *filp)
849 {
850 struct isi_port *port;
851 struct isi_board *card;
852 unsigned int board;
853 int error, line;
854
855 line = tty->index;
856 if (line < 0 || line > PORT_COUNT-1)
857 return -ENODEV;
858 board = BOARD(line);
859 card = &isi_card[board];
860
861 if (!(card->status & FIRMWARE_LOADED))
862 return -ENODEV;
863
864 /* open on a port greater than the port count for the card !!! */
865 if (line > ((board * 16) + card->port_count - 1))
866 return -ENODEV;
867
868 port = &isi_ports[line];
869 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
870 return -ENODEV;
871
872 isicom_setup_board(card);
873
874 /* FIXME: locking on port.count etc */
875 port->port.count++;
876 tty->driver_data = port;
877 tty_port_tty_set(&port->port, tty);
878 error = isicom_setup_port(tty);
879 if (error == 0)
880 error = tty_port_block_til_ready(&port->port, tty, filp);
881 return error;
882 }
883
884 /* close et all */
885
886 static inline void isicom_shutdown_board(struct isi_board *bp)
887 {
888 if (bp->status & BOARD_ACTIVE)
889 bp->status &= ~BOARD_ACTIVE;
890 }
891
892 /* card->lock HAS to be held */
893 static void isicom_shutdown_port(struct isi_port *port)
894 {
895 struct isi_board *card = port->card;
896 struct tty_struct *tty;
897
898 tty = tty_port_tty_get(&port->port);
899
900 if (!(port->port.flags & ASYNC_INITIALIZED)) {
901 tty_kref_put(tty);
902 return;
903 }
904
905 tty_port_free_xmit_buf(&port->port);
906 port->port.flags &= ~ASYNC_INITIALIZED;
907 /* 3rd October 2000 : Vinayak P Risbud */
908 tty_port_tty_set(&port->port, NULL);
909
910 /*Fix done by Anil .S on 30-04-2001
911 remote login through isi port has dtr toggle problem
912 due to which the carrier drops before the password prompt
913 appears on the remote end. Now we drop the dtr only if the
914 HUPCL(Hangup on close) flag is set for the tty*/
915
916 if (C_HUPCL(tty))
917 /* drop dtr on this port */
918 drop_dtr(port);
919
920 /* any other port uninits */
921 if (tty)
922 set_bit(TTY_IO_ERROR, &tty->flags);
923
924 if (--card->count < 0) {
925 pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n",
926 card->base, card->count);
927 card->count = 0;
928 }
929
930 /* last port was closed, shutdown that boad too */
931 if (C_HUPCL(tty)) {
932 if (!card->count)
933 isicom_shutdown_board(card);
934 }
935 tty_kref_put(tty);
936 }
937
938 static void isicom_flush_buffer(struct tty_struct *tty)
939 {
940 struct isi_port *port = tty->driver_data;
941 struct isi_board *card = port->card;
942 unsigned long flags;
943
944 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
945 return;
946
947 spin_lock_irqsave(&card->card_lock, flags);
948 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
949 spin_unlock_irqrestore(&card->card_lock, flags);
950
951 tty_wakeup(tty);
952 }
953
954 static void isicom_close(struct tty_struct *tty, struct file *filp)
955 {
956 struct isi_port *ip = tty->driver_data;
957 struct tty_port *port = &ip->port;
958 struct isi_board *card;
959 unsigned long flags;
960
961 BUG_ON(!ip);
962
963 card = ip->card;
964 if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
965 return;
966
967 /* indicate to the card that no more data can be received
968 on this port */
969 spin_lock_irqsave(&card->card_lock, flags);
970 if (port->flags & ASYNC_INITIALIZED) {
971 card->port_status &= ~(1 << ip->channel);
972 outw(card->port_status, card->base + 0x02);
973 }
974 isicom_shutdown_port(ip);
975 spin_unlock_irqrestore(&card->card_lock, flags);
976
977 isicom_flush_buffer(tty);
978
979 tty_port_close_end(port, tty);
980 }
981
982 /* write et all */
983 static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
984 int count)
985 {
986 struct isi_port *port = tty->driver_data;
987 struct isi_board *card = port->card;
988 unsigned long flags;
989 int cnt, total = 0;
990
991 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
992 return 0;
993
994 spin_lock_irqsave(&card->card_lock, flags);
995
996 while (1) {
997 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
998 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
999 if (cnt <= 0)
1000 break;
1001
1002 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
1003 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
1004 - 1);
1005 port->xmit_cnt += cnt;
1006 buf += cnt;
1007 count -= cnt;
1008 total += cnt;
1009 }
1010 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
1011 port->status |= ISI_TXOK;
1012 spin_unlock_irqrestore(&card->card_lock, flags);
1013 return total;
1014 }
1015
1016 /* put_char et all */
1017 static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
1018 {
1019 struct isi_port *port = tty->driver_data;
1020 struct isi_board *card = port->card;
1021 unsigned long flags;
1022
1023 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
1024 return 0;
1025
1026 spin_lock_irqsave(&card->card_lock, flags);
1027 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
1028 spin_unlock_irqrestore(&card->card_lock, flags);
1029 return 0;
1030 }
1031
1032 port->port.xmit_buf[port->xmit_head++] = ch;
1033 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
1034 port->xmit_cnt++;
1035 spin_unlock_irqrestore(&card->card_lock, flags);
1036 return 1;
1037 }
1038
1039 /* flush_chars et all */
1040 static void isicom_flush_chars(struct tty_struct *tty)
1041 {
1042 struct isi_port *port = tty->driver_data;
1043
1044 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1045 return;
1046
1047 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
1048 !port->port.xmit_buf)
1049 return;
1050
1051 /* this tells the transmitter to consider this port for
1052 data output to the card ... that's the best we can do. */
1053 port->status |= ISI_TXOK;
1054 }
1055
1056 /* write_room et all */
1057 static int isicom_write_room(struct tty_struct *tty)
1058 {
1059 struct isi_port *port = tty->driver_data;
1060 int free;
1061
1062 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1063 return 0;
1064
1065 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1066 if (free < 0)
1067 free = 0;
1068 return free;
1069 }
1070
1071 /* chars_in_buffer et all */
1072 static int isicom_chars_in_buffer(struct tty_struct *tty)
1073 {
1074 struct isi_port *port = tty->driver_data;
1075 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1076 return 0;
1077 return port->xmit_cnt;
1078 }
1079
1080 /* ioctl et all */
1081 static int isicom_send_break(struct tty_struct *tty, int length)
1082 {
1083 struct isi_port *port = tty->driver_data;
1084 struct isi_board *card = port->card;
1085 unsigned long base = card->base;
1086
1087 if (length == -1)
1088 return -EOPNOTSUPP;
1089
1090 if (!lock_card(card))
1091 return -EINVAL;
1092
1093 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1094 outw((length & 0xff) << 8 | 0x00, base);
1095 outw((length & 0xff00), base);
1096 InterruptTheCard(base);
1097
1098 unlock_card(card);
1099 return 0;
1100 }
1101
1102 static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
1103 {
1104 struct isi_port *port = tty->driver_data;
1105 /* just send the port status */
1106 u16 status = port->status;
1107
1108 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1109 return -ENODEV;
1110
1111 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1112 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1113 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1114 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1115 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1116 ((status & ISI_RI ) ? TIOCM_RI : 0);
1117 }
1118
1119 static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
1120 unsigned int set, unsigned int clear)
1121 {
1122 struct isi_port *port = tty->driver_data;
1123 unsigned long flags;
1124
1125 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1126 return -ENODEV;
1127
1128 spin_lock_irqsave(&port->card->card_lock, flags);
1129 if (set & TIOCM_RTS)
1130 raise_rts(port);
1131 if (set & TIOCM_DTR)
1132 raise_dtr(port);
1133
1134 if (clear & TIOCM_RTS)
1135 drop_rts(port);
1136 if (clear & TIOCM_DTR)
1137 drop_dtr(port);
1138 spin_unlock_irqrestore(&port->card->card_lock, flags);
1139
1140 return 0;
1141 }
1142
1143 static int isicom_set_serial_info(struct tty_struct *tty,
1144 struct serial_struct __user *info)
1145 {
1146 struct isi_port *port = tty->driver_data;
1147 struct serial_struct newinfo;
1148 int reconfig_port;
1149
1150 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
1151 return -EFAULT;
1152
1153 lock_kernel();
1154
1155 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
1156 (newinfo.flags & ASYNC_SPD_MASK));
1157
1158 if (!capable(CAP_SYS_ADMIN)) {
1159 if ((newinfo.close_delay != port->port.close_delay) ||
1160 (newinfo.closing_wait != port->port.closing_wait) ||
1161 ((newinfo.flags & ~ASYNC_USR_MASK) !=
1162 (port->port.flags & ~ASYNC_USR_MASK))) {
1163 unlock_kernel();
1164 return -EPERM;
1165 }
1166 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
1167 (newinfo.flags & ASYNC_USR_MASK));
1168 } else {
1169 port->port.close_delay = newinfo.close_delay;
1170 port->port.closing_wait = newinfo.closing_wait;
1171 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
1172 (newinfo.flags & ASYNC_FLAGS));
1173 }
1174 if (reconfig_port) {
1175 unsigned long flags;
1176 spin_lock_irqsave(&port->card->card_lock, flags);
1177 isicom_config_port(tty);
1178 spin_unlock_irqrestore(&port->card->card_lock, flags);
1179 }
1180 unlock_kernel();
1181 return 0;
1182 }
1183
1184 static int isicom_get_serial_info(struct isi_port *port,
1185 struct serial_struct __user *info)
1186 {
1187 struct serial_struct out_info;
1188
1189 lock_kernel();
1190 memset(&out_info, 0, sizeof(out_info));
1191 /* out_info.type = ? */
1192 out_info.line = port - isi_ports;
1193 out_info.port = port->card->base;
1194 out_info.irq = port->card->irq;
1195 out_info.flags = port->port.flags;
1196 /* out_info.baud_base = ? */
1197 out_info.close_delay = port->port.close_delay;
1198 out_info.closing_wait = port->port.closing_wait;
1199 unlock_kernel();
1200 if (copy_to_user(info, &out_info, sizeof(out_info)))
1201 return -EFAULT;
1202 return 0;
1203 }
1204
1205 static int isicom_ioctl(struct tty_struct *tty, struct file *filp,
1206 unsigned int cmd, unsigned long arg)
1207 {
1208 struct isi_port *port = tty->driver_data;
1209 void __user *argp = (void __user *)arg;
1210
1211 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1212 return -ENODEV;
1213
1214 switch (cmd) {
1215 case TIOCGSERIAL:
1216 return isicom_get_serial_info(port, argp);
1217
1218 case TIOCSSERIAL:
1219 return isicom_set_serial_info(tty, argp);
1220
1221 default:
1222 return -ENOIOCTLCMD;
1223 }
1224 return 0;
1225 }
1226
1227 /* set_termios et all */
1228 static void isicom_set_termios(struct tty_struct *tty,
1229 struct ktermios *old_termios)
1230 {
1231 struct isi_port *port = tty->driver_data;
1232 unsigned long flags;
1233
1234 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1235 return;
1236
1237 if (tty->termios->c_cflag == old_termios->c_cflag &&
1238 tty->termios->c_iflag == old_termios->c_iflag)
1239 return;
1240
1241 spin_lock_irqsave(&port->card->card_lock, flags);
1242 isicom_config_port(tty);
1243 spin_unlock_irqrestore(&port->card->card_lock, flags);
1244
1245 if ((old_termios->c_cflag & CRTSCTS) &&
1246 !(tty->termios->c_cflag & CRTSCTS)) {
1247 tty->hw_stopped = 0;
1248 isicom_start(tty);
1249 }
1250 }
1251
1252 /* throttle et all */
1253 static void isicom_throttle(struct tty_struct *tty)
1254 {
1255 struct isi_port *port = tty->driver_data;
1256 struct isi_board *card = port->card;
1257
1258 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1259 return;
1260
1261 /* tell the card that this port cannot handle any more data for now */
1262 card->port_status &= ~(1 << port->channel);
1263 outw(card->port_status, card->base + 0x02);
1264 }
1265
1266 /* unthrottle et all */
1267 static void isicom_unthrottle(struct tty_struct *tty)
1268 {
1269 struct isi_port *port = tty->driver_data;
1270 struct isi_board *card = port->card;
1271
1272 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1273 return;
1274
1275 /* tell the card that this port is ready to accept more data */
1276 card->port_status |= (1 << port->channel);
1277 outw(card->port_status, card->base + 0x02);
1278 }
1279
1280 /* stop et all */
1281 static void isicom_stop(struct tty_struct *tty)
1282 {
1283 struct isi_port *port = tty->driver_data;
1284
1285 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1286 return;
1287
1288 /* this tells the transmitter not to consider this port for
1289 data output to the card. */
1290 port->status &= ~ISI_TXOK;
1291 }
1292
1293 /* start et all */
1294 static void isicom_start(struct tty_struct *tty)
1295 {
1296 struct isi_port *port = tty->driver_data;
1297
1298 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1299 return;
1300
1301 /* this tells the transmitter to consider this port for
1302 data output to the card. */
1303 port->status |= ISI_TXOK;
1304 }
1305
1306 static void isicom_hangup(struct tty_struct *tty)
1307 {
1308 struct isi_port *port = tty->driver_data;
1309 unsigned long flags;
1310
1311 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1312 return;
1313
1314 spin_lock_irqsave(&port->card->card_lock, flags);
1315 isicom_shutdown_port(port);
1316 spin_unlock_irqrestore(&port->card->card_lock, flags);
1317
1318 tty_port_hangup(&port->port);
1319 }
1320
1321
1322 /*
1323 * Driver init and deinit functions
1324 */
1325
1326 static const struct tty_operations isicom_ops = {
1327 .open = isicom_open,
1328 .close = isicom_close,
1329 .write = isicom_write,
1330 .put_char = isicom_put_char,
1331 .flush_chars = isicom_flush_chars,
1332 .write_room = isicom_write_room,
1333 .chars_in_buffer = isicom_chars_in_buffer,
1334 .ioctl = isicom_ioctl,
1335 .set_termios = isicom_set_termios,
1336 .throttle = isicom_throttle,
1337 .unthrottle = isicom_unthrottle,
1338 .stop = isicom_stop,
1339 .start = isicom_start,
1340 .hangup = isicom_hangup,
1341 .flush_buffer = isicom_flush_buffer,
1342 .tiocmget = isicom_tiocmget,
1343 .tiocmset = isicom_tiocmset,
1344 .break_ctl = isicom_send_break,
1345 };
1346
1347 static const struct tty_port_operations isicom_port_ops = {
1348 .carrier_raised = isicom_carrier_raised,
1349 .dtr_rts = isicom_dtr_rts,
1350 };
1351
1352 static int __devinit reset_card(struct pci_dev *pdev,
1353 const unsigned int card, unsigned int *signature)
1354 {
1355 struct isi_board *board = pci_get_drvdata(pdev);
1356 unsigned long base = board->base;
1357 unsigned int sig, portcount = 0;
1358 int retval = 0;
1359
1360 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1361 base);
1362
1363 inw(base + 0x8);
1364
1365 msleep(10);
1366
1367 outw(0, base + 0x8); /* Reset */
1368
1369 msleep(1000);
1370
1371 sig = inw(base + 0x4) & 0xff;
1372
1373 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1374 sig != 0xee) {
1375 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1376 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1377 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
1378 retval = -EIO;
1379 goto end;
1380 }
1381
1382 msleep(10);
1383
1384 portcount = inw(base + 0x2);
1385 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
1386 portcount != 8 && portcount != 16)) {
1387 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
1388 card + 1);
1389 retval = -EIO;
1390 goto end;
1391 }
1392
1393 switch (sig) {
1394 case 0xa5:
1395 case 0xbb:
1396 case 0xdd:
1397 board->port_count = (portcount == 4) ? 4 : 8;
1398 board->shift_count = 12;
1399 break;
1400 case 0xcc:
1401 case 0xee:
1402 board->port_count = 16;
1403 board->shift_count = 11;
1404 break;
1405 }
1406 dev_info(&pdev->dev, "-Done\n");
1407 *signature = sig;
1408
1409 end:
1410 return retval;
1411 }
1412
1413 static int __devinit load_firmware(struct pci_dev *pdev,
1414 const unsigned int index, const unsigned int signature)
1415 {
1416 struct isi_board *board = pci_get_drvdata(pdev);
1417 const struct firmware *fw;
1418 unsigned long base = board->base;
1419 unsigned int a;
1420 u16 word_count, status;
1421 int retval = -EIO;
1422 char *name;
1423 u8 *data;
1424
1425 struct stframe {
1426 u16 addr;
1427 u16 count;
1428 u8 data[0];
1429 } *frame;
1430
1431 switch (signature) {
1432 case 0xa5:
1433 name = "isi608.bin";
1434 break;
1435 case 0xbb:
1436 name = "isi608em.bin";
1437 break;
1438 case 0xcc:
1439 name = "isi616em.bin";
1440 break;
1441 case 0xdd:
1442 name = "isi4608.bin";
1443 break;
1444 case 0xee:
1445 name = "isi4616.bin";
1446 break;
1447 default:
1448 dev_err(&pdev->dev, "Unknown signature.\n");
1449 goto end;
1450 }
1451
1452 retval = request_firmware(&fw, name, &pdev->dev);
1453 if (retval)
1454 goto end;
1455
1456 retval = -EIO;
1457
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)) {
1462 if (WaitTillCardIsFree(base))
1463 goto errrelfw;
1464
1465 outw(0xf0, base); /* start upload sequence */
1466 outw(0x00, base);
1467 outw(frame->addr, base); /* lsb of address */
1468
1469 word_count = frame->count / 2 + frame->count % 2;
1470 outw(word_count, base);
1471 InterruptTheCard(base);
1472
1473 udelay(100); /* 0x2f */
1474
1475 if (WaitTillCardIsFree(base))
1476 goto errrelfw;
1477
1478 status = inw(base + 0x4);
1479 if (status != 0) {
1480 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
1481 "Address:0x%x\n"
1482 "Count:0x%x\n"
1483 "Status:0x%x\n",
1484 index + 1, frame->addr, frame->count, status);
1485 goto errrelfw;
1486 }
1487 outsw(base, frame->data, word_count);
1488
1489 InterruptTheCard(base);
1490
1491 udelay(50); /* 0x0f */
1492
1493 if (WaitTillCardIsFree(base))
1494 goto errrelfw;
1495
1496 status = inw(base + 0x4);
1497 if (status != 0) {
1498 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1499 "Status:0x%x\n", index + 1, status);
1500 goto errrelfw;
1501 }
1502 }
1503
1504 /* XXX: should we test it by reading it back and comparing with original like
1505 * in load firmware package? */
1506 for (frame = (struct stframe *)fw->data;
1507 frame < (struct stframe *)(fw->data + fw->size);
1508 frame = (struct stframe *)((u8 *)(frame + 1) +
1509 frame->count)) {
1510 if (WaitTillCardIsFree(base))
1511 goto errrelfw;
1512
1513 outw(0xf1, base); /* start download sequence */
1514 outw(0x00, base);
1515 outw(frame->addr, base); /* lsb of address */
1516
1517 word_count = (frame->count >> 1) + frame->count % 2;
1518 outw(word_count + 1, base);
1519 InterruptTheCard(base);
1520
1521 udelay(50); /* 0xf */
1522
1523 if (WaitTillCardIsFree(base))
1524 goto errrelfw;
1525
1526 status = inw(base + 0x4);
1527 if (status != 0) {
1528 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
1529 "Address:0x%x\n"
1530 "Count:0x%x\n"
1531 "Status: 0x%x\n",
1532 index + 1, frame->addr, frame->count, status);
1533 goto errrelfw;
1534 }
1535
1536 data = kmalloc(word_count * 2, GFP_KERNEL);
1537 if (data == NULL) {
1538 dev_err(&pdev->dev, "Card%d, firmware upload "
1539 "failed, not enough memory\n", index + 1);
1540 goto errrelfw;
1541 }
1542 inw(base);
1543 insw(base, data, word_count);
1544 InterruptTheCard(base);
1545
1546 for (a = 0; a < frame->count; a++)
1547 if (data[a] != frame->data[a]) {
1548 kfree(data);
1549 dev_err(&pdev->dev, "Card%d, firmware upload "
1550 "failed\n", index + 1);
1551 goto errrelfw;
1552 }
1553 kfree(data);
1554
1555 udelay(50); /* 0xf */
1556
1557 if (WaitTillCardIsFree(base))
1558 goto errrelfw;
1559
1560 status = inw(base + 0x4);
1561 if (status != 0) {
1562 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1563 "Card Status:0x%x\n", index + 1, status);
1564 goto errrelfw;
1565 }
1566 }
1567
1568 /* xfer ctrl */
1569 if (WaitTillCardIsFree(base))
1570 goto errrelfw;
1571
1572 outw(0xf2, base);
1573 outw(0x800, base);
1574 outw(0x0, base);
1575 outw(0x0, base);
1576 InterruptTheCard(base);
1577 outw(0x0, base + 0x4); /* for ISI4608 cards */
1578
1579 board->status |= FIRMWARE_LOADED;
1580 retval = 0;
1581
1582 errrelfw:
1583 release_firmware(fw);
1584 end:
1585 return retval;
1586 }
1587
1588 /*
1589 * Insmod can set static symbols so keep these static
1590 */
1591 static unsigned int card_count;
1592
1593 static int __devinit isicom_probe(struct pci_dev *pdev,
1594 const struct pci_device_id *ent)
1595 {
1596 unsigned int uninitialized_var(signature), index;
1597 int retval = -EPERM;
1598 struct isi_board *board = NULL;
1599
1600 if (card_count >= BOARD_COUNT)
1601 goto err;
1602
1603 retval = pci_enable_device(pdev);
1604 if (retval) {
1605 dev_err(&pdev->dev, "failed to enable\n");
1606 goto err;
1607 }
1608
1609 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1610
1611 /* allot the first empty slot in the array */
1612 for (index = 0; index < BOARD_COUNT; index++)
1613 if (isi_card[index].base == 0) {
1614 board = &isi_card[index];
1615 break;
1616 }
1617
1618 board->index = index;
1619 board->base = pci_resource_start(pdev, 3);
1620 board->irq = pdev->irq;
1621 card_count++;
1622
1623 pci_set_drvdata(pdev, board);
1624
1625 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1626 if (retval) {
1627 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1628 "will be disabled.\n", board->base, board->base + 15,
1629 index + 1);
1630 retval = -EBUSY;
1631 goto errdec;
1632 }
1633
1634 retval = request_irq(board->irq, isicom_interrupt,
1635 IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board);
1636 if (retval < 0) {
1637 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1638 "Card%d will be disabled.\n", board->irq, index + 1);
1639 goto errunrr;
1640 }
1641
1642 retval = reset_card(pdev, index, &signature);
1643 if (retval < 0)
1644 goto errunri;
1645
1646 retval = load_firmware(pdev, index, signature);
1647 if (retval < 0)
1648 goto errunri;
1649
1650 for (index = 0; index < board->port_count; index++)
1651 tty_register_device(isicom_normal, board->index * 16 + index,
1652 &pdev->dev);
1653
1654 return 0;
1655
1656 errunri:
1657 free_irq(board->irq, board);
1658 errunrr:
1659 pci_release_region(pdev, 3);
1660 errdec:
1661 board->base = 0;
1662 card_count--;
1663 pci_disable_device(pdev);
1664 err:
1665 return retval;
1666 }
1667
1668 static void __devexit isicom_remove(struct pci_dev *pdev)
1669 {
1670 struct isi_board *board = pci_get_drvdata(pdev);
1671 unsigned int i;
1672
1673 for (i = 0; i < board->port_count; i++)
1674 tty_unregister_device(isicom_normal, board->index * 16 + i);
1675
1676 free_irq(board->irq, board);
1677 pci_release_region(pdev, 3);
1678 board->base = 0;
1679 card_count--;
1680 pci_disable_device(pdev);
1681 }
1682
1683 static int __init isicom_init(void)
1684 {
1685 int retval, idx, channel;
1686 struct isi_port *port;
1687
1688 for (idx = 0; idx < BOARD_COUNT; idx++) {
1689 port = &isi_ports[idx * 16];
1690 isi_card[idx].ports = port;
1691 spin_lock_init(&isi_card[idx].card_lock);
1692 for (channel = 0; channel < 16; channel++, port++) {
1693 tty_port_init(&port->port);
1694 port->port.ops = &isicom_port_ops;
1695 port->magic = ISICOM_MAGIC;
1696 port->card = &isi_card[idx];
1697 port->channel = channel;
1698 port->port.close_delay = 50 * HZ/100;
1699 port->port.closing_wait = 3000 * HZ/100;
1700 port->status = 0;
1701 /* . . . */
1702 }
1703 isi_card[idx].base = 0;
1704 isi_card[idx].irq = 0;
1705 }
1706
1707 /* tty driver structure initialization */
1708 isicom_normal = alloc_tty_driver(PORT_COUNT);
1709 if (!isicom_normal) {
1710 retval = -ENOMEM;
1711 goto error;
1712 }
1713
1714 isicom_normal->owner = THIS_MODULE;
1715 isicom_normal->name = "ttyM";
1716 isicom_normal->major = ISICOM_NMAJOR;
1717 isicom_normal->minor_start = 0;
1718 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1719 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1720 isicom_normal->init_termios = tty_std_termios;
1721 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1722 CLOCAL;
1723 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
1724 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
1725 tty_set_operations(isicom_normal, &isicom_ops);
1726
1727 retval = tty_register_driver(isicom_normal);
1728 if (retval) {
1729 pr_dbg("Couldn't register the dialin driver\n");
1730 goto err_puttty;
1731 }
1732
1733 retval = pci_register_driver(&isicom_driver);
1734 if (retval < 0) {
1735 printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
1736 goto err_unrtty;
1737 }
1738
1739 mod_timer(&tx, jiffies + 1);
1740
1741 return 0;
1742 err_unrtty:
1743 tty_unregister_driver(isicom_normal);
1744 err_puttty:
1745 put_tty_driver(isicom_normal);
1746 error:
1747 return retval;
1748 }
1749
1750 static void __exit isicom_exit(void)
1751 {
1752 del_timer_sync(&tx);
1753
1754 pci_unregister_driver(&isicom_driver);
1755 tty_unregister_driver(isicom_normal);
1756 put_tty_driver(isicom_normal);
1757 }
1758
1759 module_init(isicom_init);
1760 module_exit(isicom_exit);
1761
1762 MODULE_AUTHOR("MultiTech");
1763 MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1764 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree