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.
7 * Original driver code supplied by Multi-Tech
10 * 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree
11 * Obtain and use official major/minors
12 * Loader switched to a misc device
13 * (fixed range check bug as a side effect)
15 * 9/12/98 alan@redhat.com Rough port to 2.1.x
17 * 10/6/99 sameer Merged the ISA and PCI drivers to
18 * a new unified driver.
20 * 3/9/99 sameer Added support for ISI4616 cards.
22 * 16/9/99 sameer We do not force RTS low anymore.
23 * This is to prevent the firmware
24 * from getting confused.
26 * 26/10/99 sameer Cosmetic changes:The driver now
27 * dumps the Port Count information
28 * along with I/O address and IRQ.
30 * 13/12/99 sameer Fixed the problem with IRQ sharing.
32 * 10/5/00 sameer Fixed isicom_shutdown_board()
33 * to not lower DTR on all the ports
34 * when the last port on the card is
37 * 10/5/00 sameer Signal mask setup command added
38 * to isicom_setup_port and
39 * isicom_shutdown_port.
41 * 24/5/00 sameer The driver is now SMP aware.
44 * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
47 * 03/01/01 anil .s Added support for resetting the
48 * internal modems on ISI cards.
50 * 08/02/01 anil .s Upgraded the driver for kernel
53 * 11/04/01 Kevin Fixed firmware load problem with
56 * 30/04/01 anil .s Fixed the remote login through
57 * ISI port problem. Now the link
58 * does not go down before password
61 * 03/05/01 anil .s Fixed the problem with IRQ sharing
62 * among ISI-PCI cards.
64 * 03/05/01 anil .s Added support to display the version
65 * info during insmod as well as module
68 * 10/05/01 anil .s Done the modifications to the source
69 * file and Install script so that the
70 * same installation can be used for
71 * 2.2.x and 2.4.x kernel.
73 * 06/06/01 anil .s Now we drop both dtr and rts during
74 * shutdown_port as well as raise them
75 * during isicom_config_port.
77 * 09/06/01 acme@conectiva.com.br use capable, not suser, do
78 * restore_flags on failure in
79 * isicom_send_break, verify put_user
82 * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps
83 * Baud index extended to 21
85 * 20/03/03 ranjeeth Made to work for Linux Advanced server.
86 * Taken care of license warning.
88 * 10/12/03 Ravindra Made to work for Fedora Core 1 of
89 * Red Hat Distribution
91 * 06/01/05 Alan Cox Merged the ISI and base kernel strands
92 * into a single 2.6 driver
94 * ***********************************************************
96 * To use this driver you also need the support package. You
97 * can find this in RPM format on
98 * ftp://ftp.linux.org.uk/pub/linux/alan
100 * You can find the original tools for this direct from Multitech
101 * ftp://ftp.multitech.com/ISI-Cards/
103 * Having installed the cards the module options (/etc/modprobe.conf)
105 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
107 * Omit those entries for boards you don't have installed.
111 * 64-bit verification
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>
129 #include <asm/uaccess.h>
131 #include <asm/system.h>
133 #include <linux/pci.h>
135 #include <linux/isicom.h>
137 #define InterruptTheCard(base) outw(0, (base) + 0xc)
138 #define ClearInterrupt(base) inw((base) + 0x0a)
141 #define pr_dbg(str...) printk(KERN_DEBUG "ISICOM: " str)
142 #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
144 #define pr_dbg(str...) do { } while (0)
145 #define isicom_paranoia_check(a, b, c) 0
148 static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
149 static void __devexit isicom_remove(struct pci_dev *);
151 static struct pci_device_id isicom_pci_tbl[] = {
152 { PCI_DEVICE(VENDOR_ID, 0x2028) },
153 { PCI_DEVICE(VENDOR_ID, 0x2051) },
154 { PCI_DEVICE(VENDOR_ID, 0x2052) },
155 { PCI_DEVICE(VENDOR_ID, 0x2053) },
156 { PCI_DEVICE(VENDOR_ID, 0x2054) },
157 { PCI_DEVICE(VENDOR_ID, 0x2055) },
158 { PCI_DEVICE(VENDOR_ID, 0x2056) },
159 { PCI_DEVICE(VENDOR_ID, 0x2057) },
160 { PCI_DEVICE(VENDOR_ID, 0x2058) },
163 MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
165 static struct pci_driver isicom_driver = {
167 .id_table = isicom_pci_tbl,
168 .probe = isicom_probe,
169 .remove = __devexit_p(isicom_remove)
172 static int prev_card = 3; /* start servicing isi_card[0] */
173 static struct tty_driver *isicom_normal;
175 static DECLARE_COMPLETION(isi_timerdone);
176 static char re_schedule = 1;
178 static void isicom_tx(unsigned long _data);
179 static void isicom_start(struct tty_struct *tty);
181 static DEFINE_TIMER(tx, isicom_tx, 0, 0);
183 /* baud index mappings from linux defns to isi */
185 static signed char linuxb_to_isib[] = {
186 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19
192 unsigned char port_count;
193 unsigned short status;
194 unsigned short port_status; /* each bit for each port */
195 unsigned short shift_count;
196 struct isi_port * ports;
198 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
204 unsigned short magic;
212 struct isi_board * card;
213 struct tty_struct * tty;
214 wait_queue_head_t close_wait;
215 wait_queue_head_t open_wait;
216 struct work_struct hangup_tq;
217 struct work_struct bh_tqueue;
218 unsigned char * xmit_buf;
224 static struct isi_board isi_card[BOARD_COUNT];
225 static struct isi_port isi_ports[PORT_COUNT];
228 * Locking functions for card level locking. We need to own both
229 * the kernel lock for the card and have the card in a position that
233 static int lock_card(struct isi_board *card)
236 unsigned long base = card->base;
238 for (retries = 0; retries < 100; retries++) {
239 spin_lock_irqsave(&card->card_lock, card->flags);
240 if (inw(base + 0xe) & 0x1) {
243 spin_unlock_irqrestore(&card->card_lock, card->flags);
244 udelay(1000); /* 1ms */
247 printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n",
250 return 0; /* Failed to acquire the card! */
253 static int lock_card_at_interrupt(struct isi_board *card)
255 unsigned char retries;
256 unsigned long base = card->base;
258 for (retries = 0; retries < 200; retries++) {
259 spin_lock_irqsave(&card->card_lock, card->flags);
261 if (inw(base + 0xe) & 0x1)
264 spin_unlock_irqrestore(&card->card_lock, card->flags);
266 /* Failing in interrupt is an acceptable event */
267 return 0; /* Failed to acquire the card! */
270 static void unlock_card(struct isi_board *card)
272 spin_unlock_irqrestore(&card->card_lock, card->flags);
276 * ISI Card specific ops ...
279 static void raise_dtr(struct isi_port *port)
281 struct isi_board *card = port->card;
282 unsigned long base = card->base;
283 u16 channel = port->channel;
285 if (!lock_card(card))
288 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
290 InterruptTheCard(base);
291 port->status |= ISI_DTR;
295 static inline void drop_dtr(struct isi_port *port)
297 struct isi_board *card = port->card;
298 unsigned long base = card->base;
299 u16 channel = port->channel;
301 if (!lock_card(card))
304 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
306 InterruptTheCard(base);
307 port->status &= ~ISI_DTR;
311 static inline void raise_rts(struct isi_port *port)
313 struct isi_board *card = port->card;
314 unsigned long base = card->base;
315 u16 channel = port->channel;
317 if (!lock_card(card))
320 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
322 InterruptTheCard(base);
323 port->status |= ISI_RTS;
326 static inline void drop_rts(struct isi_port *port)
328 struct isi_board *card = port->card;
329 unsigned long base = card->base;
330 u16 channel = port->channel;
332 if (!lock_card(card))
335 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
337 InterruptTheCard(base);
338 port->status &= ~ISI_RTS;
342 static inline void raise_dtr_rts(struct isi_port *port)
344 struct isi_board *card = port->card;
345 unsigned long base = card->base;
346 u16 channel = port->channel;
348 if (!lock_card(card))
351 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
353 InterruptTheCard(base);
354 port->status |= (ISI_DTR | ISI_RTS);
358 static void drop_dtr_rts(struct isi_port *port)
360 struct isi_board *card = port->card;
361 unsigned long base = card->base;
362 u16 channel = port->channel;
364 if (!lock_card(card))
367 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
369 InterruptTheCard(base);
370 port->status &= ~(ISI_RTS | ISI_DTR);
374 static inline void kill_queue(struct isi_port *port, short queue)
376 struct isi_board *card = port->card;
377 unsigned long base = card->base;
378 u16 channel = port->channel;
380 if (!lock_card(card))
383 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
384 outw((queue << 8) | 0x06, base);
385 InterruptTheCard(base);
390 * ISICOM Driver specific routines ...
394 static inline int __isicom_paranoia_check(struct isi_port const *port,
395 char *name, const char *routine)
398 printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for "
399 "dev %s in %s.\n", name, routine);
402 if (port->magic != ISICOM_MAGIC) {
403 printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for "
404 "dev %s in %s.\n", name, routine);
414 * We shovel data into the card buffers on a regular basis. The card
415 * will do the rest of the work for us.
418 static void isicom_tx(unsigned long _data)
420 short count = (BOARD_COUNT-1), card, base;
421 short txcount, wrd, residue, word_count, cnt;
422 struct isi_port *port;
423 struct tty_struct *tty;
425 /* find next active board */
426 card = (prev_card + 1) & 0x0003;
428 if (isi_card[card].status & BOARD_ACTIVE)
430 card = (card + 1) & 0x0003;
432 if (!(isi_card[card].status & BOARD_ACTIVE))
437 count = isi_card[card].port_count;
438 port = isi_card[card].ports;
439 base = isi_card[card].base;
440 for (;count > 0;count--, port++) {
441 if (!lock_card_at_interrupt(&isi_card[card]))
443 /* port not active or tx disabled to force flow control */
444 if (!(port->flags & ASYNC_INITIALIZED) ||
445 !(port->status & ISI_TXOK))
446 unlock_card(&isi_card[card]);
453 unlock_card(&isi_card[card]);
457 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
458 if (txcount <= 0 || tty->stopped || tty->hw_stopped) {
459 unlock_card(&isi_card[card]);
462 if (!(inw(base + 0x02) & (1 << port->channel))) {
463 unlock_card(&isi_card[card]);
466 pr_dbg("txing %d bytes, port%d.\n", txcount,
468 outw((port->channel << isi_card[card].shift_count) | txcount,
473 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
475 if (residue == YES) {
478 wrd |= (port->xmit_buf[port->xmit_tail]
480 port->xmit_tail = (port->xmit_tail + 1)
481 & (SERIAL_XMIT_SIZE - 1);
492 word_count = cnt >> 1;
493 outsw(base, port->xmit_buf+port->xmit_tail,word_count);
494 port->xmit_tail = (port->xmit_tail
495 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
496 txcount -= (word_count << 1);
497 port->xmit_cnt -= (word_count << 1);
500 wrd = port->xmit_buf[port->xmit_tail];
501 port->xmit_tail = (port->xmit_tail + 1)
502 & (SERIAL_XMIT_SIZE - 1);
508 InterruptTheCard(base);
509 if (port->xmit_cnt <= 0)
510 port->status &= ~ISI_TXOK;
511 if (port->xmit_cnt <= WAKEUP_CHARS)
512 schedule_work(&port->bh_tqueue);
513 unlock_card(&isi_card[card]);
516 /* schedule another tx for hopefully in about 10ms */
519 complete(&isi_timerdone);
523 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
526 /* Interrupt handlers */
529 static void isicom_bottomhalf(struct work_struct *work)
531 struct isi_port *port = container_of(work, struct isi_port, bh_tqueue);
532 struct tty_struct *tty = port->tty;
538 wake_up_interruptible(&tty->write_wait);
542 * Main interrupt handler routine
545 static irqreturn_t isicom_interrupt(int irq, void *dev_id)
547 struct isi_board *card = dev_id;
548 struct isi_port *port;
549 struct tty_struct *tty;
551 u16 header, word_count, count, channel;
555 if (!card || !(card->status & FIRMWARE_LOADED))
559 spin_lock(&card->card_lock);
562 * disable any interrupts from the PCI card and lower the
565 outw(0x8000, base+0x04);
566 ClearInterrupt(base);
568 inw(base); /* get the dummy word out */
570 channel = (header & 0x7800) >> card->shift_count;
571 byte_count = header & 0xff;
573 if (channel + 1 > card->port_count) {
574 printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): "
575 "%d(channel) > port_count.\n", base, channel+1);
576 outw(0x0000, base+0x04); /* enable interrupts */
577 spin_unlock(&card->card_lock);
580 port = card->ports + channel;
581 if (!(port->flags & ASYNC_INITIALIZED)) {
582 outw(0x0000, base+0x04); /* enable interrupts */
588 word_count = byte_count >> 1;
589 while(byte_count > 1) {
593 if (byte_count & 0x01)
595 outw(0x0000, base+0x04); /* enable interrupts */
596 spin_unlock(&card->card_lock);
600 if (header & 0x8000) { /* Status Packet */
602 switch(header & 0xff) {
603 case 0: /* Change in EIA signals */
604 if (port->flags & ASYNC_CHECK_CD) {
605 if (port->status & ISI_DCD) {
606 if (!(header & ISI_DCD)) {
607 /* Carrier has been lost */
608 pr_dbg("interrupt: DCD->low.\n"
610 port->status &= ~ISI_DCD;
611 schedule_work(&port->hangup_tq);
613 } else if (header & ISI_DCD) {
614 /* Carrier has been detected */
615 pr_dbg("interrupt: DCD->high.\n");
616 port->status |= ISI_DCD;
617 wake_up_interruptible(&port->open_wait);
620 if (header & ISI_DCD)
621 port->status |= ISI_DCD;
623 port->status &= ~ISI_DCD;
626 if (port->flags & ASYNC_CTS_FLOW) {
627 if (port->tty->hw_stopped) {
628 if (header & ISI_CTS) {
629 port->tty->hw_stopped = 0;
631 port->status |= (ISI_TXOK
633 schedule_work(&port->bh_tqueue);
635 } else if (!(header & ISI_CTS)) {
636 port->tty->hw_stopped = 1;
638 port->status &= ~(ISI_TXOK | ISI_CTS);
641 if (header & ISI_CTS)
642 port->status |= ISI_CTS;
644 port->status &= ~ISI_CTS;
647 if (header & ISI_DSR)
648 port->status |= ISI_DSR;
650 port->status &= ~ISI_DSR;
653 port->status |= ISI_RI;
655 port->status &= ~ISI_RI;
659 case 1: /* Received Break !!! */
660 tty_insert_flip_char(tty, 0, TTY_BREAK);
661 if (port->flags & ASYNC_SAK)
663 tty_flip_buffer_push(tty);
666 case 2: /* Statistics */
667 pr_dbg("isicom_interrupt: stats!!!.\n");
671 pr_dbg("Intr: Unknown code in status packet.\n");
674 } else { /* Data Packet */
676 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
677 pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count);
678 word_count = count >> 1;
679 insw(base, rp, word_count);
680 byte_count -= (word_count << 1);
681 if (count & 0x0001) {
682 tty_insert_flip_char(tty, inw(base) & 0xff,
686 if (byte_count > 0) {
687 pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping "
688 "bytes...\n", base, channel + 1);
689 while(byte_count > 0) { /* drain out unread xtra data */
694 tty_flip_buffer_push(tty);
696 outw(0x0000, base+0x04); /* enable interrupts */
701 static void isicom_config_port(struct isi_port *port)
703 struct isi_board *card = port->card;
704 struct tty_struct *tty;
706 unsigned long base = card->base;
707 u16 channel_setup, channel = port->channel,
708 shift_count = card->shift_count;
709 unsigned char flow_ctrl;
711 if (!(tty = port->tty) || !tty->termios)
714 if (baud & CBAUDEX) {
717 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
718 * then the card is programmed for 57.6Kbps or 115Kbps
722 if (baud < 1 || baud > 2)
723 port->tty->termios->c_cflag &= ~CBAUDEX;
729 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
730 * by the set_serial_info ioctl ... this is done by
731 * the 'setserial' utility.
734 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
735 baud++; /* 57.6 Kbps */
736 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
737 baud +=2; /* 115 Kbps */
739 if (linuxb_to_isib[baud] == -1) {
747 if (lock_card(card)) {
748 outw(0x8000 | (channel << shift_count) |0x03, base);
749 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
751 switch(C_CSIZE(tty)) {
753 channel_setup |= ISICOM_CS5;
756 channel_setup |= ISICOM_CS6;
759 channel_setup |= ISICOM_CS7;
762 channel_setup |= ISICOM_CS8;
767 channel_setup |= ISICOM_2SB;
769 channel_setup |= ISICOM_EVPAR;
771 channel_setup |= ISICOM_ODPAR;
773 outw(channel_setup, base);
774 InterruptTheCard(base);
778 port->flags &= ~ASYNC_CHECK_CD;
780 port->flags |= ASYNC_CHECK_CD;
782 /* flow control settings ...*/
784 port->flags &= ~ASYNC_CTS_FLOW;
785 if (C_CRTSCTS(tty)) {
786 port->flags |= ASYNC_CTS_FLOW;
787 flow_ctrl |= ISICOM_CTSRTS;
790 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
792 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
794 if (lock_card(card)) {
795 outw(0x8000 | (channel << shift_count) |0x04, base);
796 outw(flow_ctrl << 8 | 0x05, base);
797 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
798 InterruptTheCard(base);
802 /* rx enabled -> enable port for rx on the card */
804 card->port_status |= (1 << channel);
805 outw(card->port_status, base + 0x02);
811 static inline void isicom_setup_board(struct isi_board *bp)
814 struct isi_port *port;
817 spin_lock_irqsave(&bp->card_lock, flags);
818 if (bp->status & BOARD_ACTIVE) {
819 spin_unlock_irqrestore(&bp->card_lock, flags);
823 bp->status |= BOARD_ACTIVE;
824 spin_unlock_irqrestore(&bp->card_lock, flags);
825 for (channel = 0; channel < bp->port_count; channel++, port++)
830 static int isicom_setup_port(struct isi_port *port)
832 struct isi_board *card = port->card;
835 if (port->flags & ASYNC_INITIALIZED) {
838 if (!port->xmit_buf) {
841 if (!(page = get_zeroed_page(GFP_KERNEL)))
844 if (port->xmit_buf) {
848 port->xmit_buf = (unsigned char *) page;
851 spin_lock_irqsave(&card->card_lock, flags);
853 clear_bit(TTY_IO_ERROR, &port->tty->flags);
854 if (port->count == 1)
857 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
859 /* discard any residual data */
860 kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX);
862 isicom_config_port(port);
863 port->flags |= ASYNC_INITIALIZED;
864 spin_unlock_irqrestore(&card->card_lock, flags);
869 static int block_til_ready(struct tty_struct *tty, struct file *filp,
870 struct isi_port *port)
872 struct isi_board *card = port->card;
873 int do_clocal = 0, retval;
875 DECLARE_WAITQUEUE(wait, current);
877 /* block if port is in the process of being closed */
879 if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
880 pr_dbg("block_til_ready: close in progress.\n");
881 interruptible_sleep_on(&port->close_wait);
882 if (port->flags & ASYNC_HUP_NOTIFY)
888 /* if non-blocking mode is set ... */
890 if ((filp->f_flags & O_NONBLOCK) ||
891 (tty->flags & (1 << TTY_IO_ERROR))) {
892 pr_dbg("block_til_ready: non-block mode.\n");
893 port->flags |= ASYNC_NORMAL_ACTIVE;
900 /* block waiting for DCD to be asserted, and while
901 callout dev is busy */
903 add_wait_queue(&port->open_wait, &wait);
905 spin_lock_irqsave(&card->card_lock, flags);
906 if (!tty_hung_up_p(filp))
908 port->blocked_open++;
909 spin_unlock_irqrestore(&card->card_lock, flags);
914 set_current_state(TASK_INTERRUPTIBLE);
915 if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
916 if (port->flags & ASYNC_HUP_NOTIFY)
919 retval = -ERESTARTSYS;
922 if (!(port->flags & ASYNC_CLOSING) &&
923 (do_clocal || (port->status & ISI_DCD))) {
926 if (signal_pending(current)) {
927 retval = -ERESTARTSYS;
932 set_current_state(TASK_RUNNING);
933 remove_wait_queue(&port->open_wait, &wait);
934 spin_lock_irqsave(&card->card_lock, flags);
935 if (!tty_hung_up_p(filp))
937 port->blocked_open--;
938 spin_unlock_irqrestore(&card->card_lock, flags);
941 port->flags |= ASYNC_NORMAL_ACTIVE;
945 static int isicom_open(struct tty_struct *tty, struct file *filp)
947 struct isi_port *port;
948 struct isi_board *card;
953 if (line < 0 || line > PORT_COUNT-1)
956 card = &isi_card[board];
958 if (!(card->status & FIRMWARE_LOADED))
961 /* open on a port greater than the port count for the card !!! */
962 if (line > ((board * 16) + card->port_count - 1))
965 port = &isi_ports[line];
966 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
969 isicom_setup_board(card);
972 tty->driver_data = port;
974 if ((error = isicom_setup_port(port))!=0)
976 if ((error = block_til_ready(tty, filp, port))!=0)
984 static inline void isicom_shutdown_board(struct isi_board *bp)
988 spin_lock_irqsave(&bp->card_lock, flags);
989 if (bp->status & BOARD_ACTIVE) {
990 bp->status &= ~BOARD_ACTIVE;
992 spin_unlock_irqrestore(&bp->card_lock, flags);
995 static void isicom_shutdown_port(struct isi_port *port)
997 struct isi_board *card = port->card;
998 struct tty_struct *tty;
1003 spin_lock_irqsave(&card->card_lock, flags);
1004 if (!(port->flags & ASYNC_INITIALIZED)) {
1005 spin_unlock_irqrestore(&card->card_lock, flags);
1008 if (port->xmit_buf) {
1009 free_page((unsigned long) port->xmit_buf);
1010 port->xmit_buf = NULL;
1012 port->flags &= ~ASYNC_INITIALIZED;
1013 /* 3rd October 2000 : Vinayak P Risbud */
1015 spin_unlock_irqrestore(&card->card_lock, flags);
1017 /*Fix done by Anil .S on 30-04-2001
1018 remote login through isi port has dtr toggle problem
1019 due to which the carrier drops before the password prompt
1020 appears on the remote end. Now we drop the dtr only if the
1021 HUPCL(Hangup on close) flag is set for the tty*/
1024 /* drop dtr on this port */
1027 /* any other port uninits */
1029 set_bit(TTY_IO_ERROR, &tty->flags);
1031 if (--card->count < 0) {
1032 pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n",
1033 card->base, card->count);
1037 /* last port was closed, shutdown that boad too */
1040 isicom_shutdown_board(card);
1044 static void isicom_close(struct tty_struct *tty, struct file *filp)
1046 struct isi_port *port = tty->driver_data;
1047 struct isi_board *card;
1048 unsigned long flags;
1053 if (isicom_paranoia_check(port, tty->name, "isicom_close"))
1056 pr_dbg("Close start!!!.\n");
1058 spin_lock_irqsave(&card->card_lock, flags);
1059 if (tty_hung_up_p(filp)) {
1060 spin_unlock_irqrestore(&card->card_lock, flags);
1064 if (tty->count == 1 && port->count != 1) {
1065 printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
1066 "count tty->count = 1 port count = %d.\n",
1067 card->base, port->count);
1070 if (--port->count < 0) {
1071 printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
1072 "count for channel%d = %d", card->base, port->channel,
1078 spin_unlock_irqrestore(&card->card_lock, flags);
1081 port->flags |= ASYNC_CLOSING;
1083 spin_unlock_irqrestore(&card->card_lock, flags);
1085 if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
1086 tty_wait_until_sent(tty, port->closing_wait);
1087 /* indicate to the card that no more data can be received
1089 spin_lock_irqsave(&card->card_lock, flags);
1090 if (port->flags & ASYNC_INITIALIZED) {
1091 card->port_status &= ~(1 << port->channel);
1092 outw(card->port_status, card->base + 0x02);
1094 isicom_shutdown_port(port);
1095 spin_unlock_irqrestore(&card->card_lock, flags);
1097 if (tty->driver->flush_buffer)
1098 tty->driver->flush_buffer(tty);
1099 tty_ldisc_flush(tty);
1101 spin_lock_irqsave(&card->card_lock, flags);
1104 if (port->blocked_open) {
1105 spin_unlock_irqrestore(&card->card_lock, flags);
1106 if (port->close_delay) {
1107 pr_dbg("scheduling until time out.\n");
1108 msleep_interruptible(
1109 jiffies_to_msecs(port->close_delay));
1111 spin_lock_irqsave(&card->card_lock, flags);
1112 wake_up_interruptible(&port->open_wait);
1114 port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
1115 wake_up_interruptible(&port->close_wait);
1116 spin_unlock_irqrestore(&card->card_lock, flags);
1120 static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
1123 struct isi_port *port = tty->driver_data;
1124 struct isi_board *card = port->card;
1125 unsigned long flags;
1128 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
1131 if (!port->xmit_buf)
1134 spin_lock_irqsave(&card->card_lock, flags);
1137 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
1138 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
1142 memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
1143 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
1145 port->xmit_cnt += cnt;
1150 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
1151 port->status |= ISI_TXOK;
1152 spin_unlock_irqrestore(&card->card_lock, flags);
1156 /* put_char et all */
1157 static void isicom_put_char(struct tty_struct *tty, unsigned char ch)
1159 struct isi_port *port = tty->driver_data;
1160 struct isi_board *card = port->card;
1161 unsigned long flags;
1163 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
1166 if (!port->xmit_buf)
1169 spin_lock_irqsave(&card->card_lock, flags);
1170 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
1171 spin_unlock_irqrestore(&card->card_lock, flags);
1175 port->xmit_buf[port->xmit_head++] = ch;
1176 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
1178 spin_unlock_irqrestore(&card->card_lock, flags);
1181 /* flush_chars et all */
1182 static void isicom_flush_chars(struct tty_struct *tty)
1184 struct isi_port *port = tty->driver_data;
1186 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1189 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
1193 /* this tells the transmitter to consider this port for
1194 data output to the card ... that's the best we can do. */
1195 port->status |= ISI_TXOK;
1198 /* write_room et all */
1199 static int isicom_write_room(struct tty_struct *tty)
1201 struct isi_port *port = tty->driver_data;
1204 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1207 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1213 /* chars_in_buffer et all */
1214 static int isicom_chars_in_buffer(struct tty_struct *tty)
1216 struct isi_port *port = tty->driver_data;
1217 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1219 return port->xmit_cnt;
1223 static inline void isicom_send_break(struct isi_port *port,
1224 unsigned long length)
1226 struct isi_board *card = port->card;
1227 unsigned long base = card->base;
1229 if (!lock_card(card))
1232 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1233 outw((length & 0xff) << 8 | 0x00, base);
1234 outw((length & 0xff00), base);
1235 InterruptTheCard(base);
1240 static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
1242 struct isi_port *port = tty->driver_data;
1243 /* just send the port status */
1244 u16 status = port->status;
1246 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1249 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1250 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1251 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1252 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1253 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1254 ((status & ISI_RI ) ? TIOCM_RI : 0);
1257 static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
1258 unsigned int set, unsigned int clear)
1260 struct isi_port *port = tty->driver_data;
1262 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1265 if (set & TIOCM_RTS)
1267 if (set & TIOCM_DTR)
1270 if (clear & TIOCM_RTS)
1272 if (clear & TIOCM_DTR)
1278 static int isicom_set_serial_info(struct isi_port *port,
1279 struct serial_struct __user *info)
1281 struct serial_struct newinfo;
1284 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
1287 reconfig_port = ((port->flags & ASYNC_SPD_MASK) !=
1288 (newinfo.flags & ASYNC_SPD_MASK));
1290 if (!capable(CAP_SYS_ADMIN)) {
1291 if ((newinfo.close_delay != port->close_delay) ||
1292 (newinfo.closing_wait != port->closing_wait) ||
1293 ((newinfo.flags & ~ASYNC_USR_MASK) !=
1294 (port->flags & ~ASYNC_USR_MASK)))
1296 port->flags = ((port->flags & ~ ASYNC_USR_MASK) |
1297 (newinfo.flags & ASYNC_USR_MASK));
1300 port->close_delay = newinfo.close_delay;
1301 port->closing_wait = newinfo.closing_wait;
1302 port->flags = ((port->flags & ~ASYNC_FLAGS) |
1303 (newinfo.flags & ASYNC_FLAGS));
1305 if (reconfig_port) {
1306 isicom_config_port(port);
1311 static int isicom_get_serial_info(struct isi_port *port,
1312 struct serial_struct __user *info)
1314 struct serial_struct out_info;
1316 memset(&out_info, 0, sizeof(out_info));
1317 /* out_info.type = ? */
1318 out_info.line = port - isi_ports;
1319 out_info.port = port->card->base;
1320 out_info.irq = port->card->irq;
1321 out_info.flags = port->flags;
1322 /* out_info.baud_base = ? */
1323 out_info.close_delay = port->close_delay;
1324 out_info.closing_wait = port->closing_wait;
1325 if (copy_to_user(info, &out_info, sizeof(out_info)))
1330 static int isicom_ioctl(struct tty_struct *tty, struct file *filp,
1331 unsigned int cmd, unsigned long arg)
1333 struct isi_port *port = tty->driver_data;
1334 void __user *argp = (void __user *)arg;
1337 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1342 retval = tty_check_change(tty);
1345 tty_wait_until_sent(tty, 0);
1347 isicom_send_break(port, HZ/4);
1351 retval = tty_check_change(tty);
1354 tty_wait_until_sent(tty, 0);
1355 isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4);
1359 return put_user(C_CLOCAL(tty) ? 1 : 0,
1360 (unsigned long __user *)argp);
1363 if (get_user(arg, (unsigned long __user *) argp))
1365 tty->termios->c_cflag =
1366 ((tty->termios->c_cflag & ~CLOCAL) |
1367 (arg ? CLOCAL : 0));
1371 return isicom_get_serial_info(port, argp);
1374 return isicom_set_serial_info(port, argp);
1377 return -ENOIOCTLCMD;
1382 /* set_termios et all */
1383 static void isicom_set_termios(struct tty_struct *tty,
1384 struct ktermios *old_termios)
1386 struct isi_port *port = tty->driver_data;
1388 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1391 if (tty->termios->c_cflag == old_termios->c_cflag &&
1392 tty->termios->c_iflag == old_termios->c_iflag)
1395 isicom_config_port(port);
1397 if ((old_termios->c_cflag & CRTSCTS) &&
1398 !(tty->termios->c_cflag & CRTSCTS)) {
1399 tty->hw_stopped = 0;
1404 /* throttle et all */
1405 static void isicom_throttle(struct tty_struct *tty)
1407 struct isi_port *port = tty->driver_data;
1408 struct isi_board *card = port->card;
1410 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1413 /* tell the card that this port cannot handle any more data for now */
1414 card->port_status &= ~(1 << port->channel);
1415 outw(card->port_status, card->base + 0x02);
1418 /* unthrottle et all */
1419 static void isicom_unthrottle(struct tty_struct *tty)
1421 struct isi_port *port = tty->driver_data;
1422 struct isi_board *card = port->card;
1424 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1427 /* tell the card that this port is ready to accept more data */
1428 card->port_status |= (1 << port->channel);
1429 outw(card->port_status, card->base + 0x02);
1433 static void isicom_stop(struct tty_struct *tty)
1435 struct isi_port *port = tty->driver_data;
1437 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1440 /* this tells the transmitter not to consider this port for
1441 data output to the card. */
1442 port->status &= ~ISI_TXOK;
1446 static void isicom_start(struct tty_struct *tty)
1448 struct isi_port *port = tty->driver_data;
1450 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1453 /* this tells the transmitter to consider this port for
1454 data output to the card. */
1455 port->status |= ISI_TXOK;
1459 static void do_isicom_hangup(struct work_struct *work)
1461 struct isi_port *port = container_of(work, struct isi_port, hangup_tq);
1462 struct tty_struct *tty;
1469 static void isicom_hangup(struct tty_struct *tty)
1471 struct isi_port *port = tty->driver_data;
1473 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1476 isicom_shutdown_port(port);
1478 port->flags &= ~ASYNC_NORMAL_ACTIVE;
1480 wake_up_interruptible(&port->open_wait);
1483 /* flush_buffer et all */
1484 static void isicom_flush_buffer(struct tty_struct *tty)
1486 struct isi_port *port = tty->driver_data;
1487 struct isi_board *card = port->card;
1488 unsigned long flags;
1490 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
1493 spin_lock_irqsave(&card->card_lock, flags);
1494 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1495 spin_unlock_irqrestore(&card->card_lock, flags);
1497 wake_up_interruptible(&tty->write_wait);
1502 * Driver init and deinit functions
1505 static const struct tty_operations isicom_ops = {
1506 .open = isicom_open,
1507 .close = isicom_close,
1508 .write = isicom_write,
1509 .put_char = isicom_put_char,
1510 .flush_chars = isicom_flush_chars,
1511 .write_room = isicom_write_room,
1512 .chars_in_buffer = isicom_chars_in_buffer,
1513 .ioctl = isicom_ioctl,
1514 .set_termios = isicom_set_termios,
1515 .throttle = isicom_throttle,
1516 .unthrottle = isicom_unthrottle,
1517 .stop = isicom_stop,
1518 .start = isicom_start,
1519 .hangup = isicom_hangup,
1520 .flush_buffer = isicom_flush_buffer,
1521 .tiocmget = isicom_tiocmget,
1522 .tiocmset = isicom_tiocmset,
1525 static int __devinit reset_card(struct pci_dev *pdev,
1526 const unsigned int card, unsigned int *signature)
1528 struct isi_board *board = pci_get_drvdata(pdev);
1529 unsigned long base = board->base;
1530 unsigned int portcount = 0;
1533 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1540 outw(0, base + 0x8); /* Reset */
1544 *signature = inw(base + 0x4) & 0xff;
1546 portcount = inw(base + 0x2);
1547 if (!(inw(base + 0xe) & 0x1) || ((portcount != 0) &&
1548 (portcount != 4) && (portcount != 8))) {
1549 dev_dbg(&pdev->dev, "base+0x2=0x%lx, base+0xe=0x%lx\n",
1550 inw(base + 0x2), inw(base + 0xe));
1551 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure "
1552 "(Possible bad I/O Port Address 0x%lx).\n",
1558 switch (*signature) {
1562 board->port_count = (portcount == 4) ? 4 : 8;
1563 board->shift_count = 12;
1566 board->port_count = 16;
1567 board->shift_count = 11;
1570 dev_warn(&pdev->dev, "ISILoad:Card%d reset failure (Possible "
1571 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1572 dev_dbg(&pdev->dev, "Sig=0x%lx\n", signature);
1575 dev_info(&pdev->dev, "-Done\n");
1581 static inline int WaitTillCardIsFree(u16 base)
1583 unsigned long count = 0;
1585 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
1588 return !(inw(base + 0xe) & 0x1);
1591 static int __devinit load_firmware(struct pci_dev *pdev,
1592 const unsigned int index, const unsigned int signature)
1594 struct isi_board *board = pci_get_drvdata(pdev);
1595 const struct firmware *fw;
1596 unsigned long base = board->base;
1598 u16 word_count, status;
1609 switch (signature) {
1611 name = "isi608.bin";
1614 name = "isi608em.bin";
1617 name = "isi616em.bin";
1620 name = "isi4608.bin";
1623 name = "isi4616.bin";
1626 dev_err(&pdev->dev, "Unknown signature.\n");
1630 retval = request_firmware(&fw, name, &pdev->dev);
1636 for (frame = (struct stframe *)fw->data;
1637 frame < (struct stframe *)(fw->data + fw->size);
1638 frame = (struct stframe *)((u8 *)(frame + 1) +
1640 if (WaitTillCardIsFree(base))
1643 outw(0xf0, base); /* start upload sequence */
1645 outw(frame->addr, base); /* lsb of address */
1647 word_count = frame->count / 2 + frame->count % 2;
1648 outw(word_count, base);
1649 InterruptTheCard(base);
1651 udelay(100); /* 0x2f */
1653 if (WaitTillCardIsFree(base))
1656 if ((status = inw(base + 0x4)) != 0) {
1657 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
1658 "Address:0x%x\nCount:0x%x\nStatus:0x%x\n",
1659 index + 1, frame->addr, frame->count, status);
1662 outsw(base, frame->data, word_count);
1664 InterruptTheCard(base);
1666 udelay(50); /* 0x0f */
1668 if (WaitTillCardIsFree(base))
1671 if ((status = inw(base + 0x4)) != 0) {
1672 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1673 "Status:0x%x\n", index + 1, status);
1678 /* XXX: should we test it by reading it back and comparing with original like
1679 * in load firmware package? */
1680 for (frame = (struct stframe *)fw->data;
1681 frame < (struct stframe *)(fw->data + fw->size);
1682 frame = (struct stframe *)((u8 *)(frame + 1) +
1684 if (WaitTillCardIsFree(base))
1687 outw(0xf1, base); /* start download sequence */
1689 outw(frame->addr, base); /* lsb of address */
1691 word_count = (frame->count >> 1) + frame->count % 2;
1692 outw(word_count + 1, base);
1693 InterruptTheCard(base);
1695 udelay(50); /* 0xf */
1697 if (WaitTillCardIsFree(base))
1700 if ((status = inw(base + 0x4)) != 0) {
1701 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
1702 "Address:0x%x\nCount:0x%x\nStatus: 0x%x\n",
1703 index + 1, frame->addr, frame->count, status);
1707 data = kmalloc(word_count * 2, GFP_KERNEL);
1709 dev_err(&pdev->dev, "Card%d, firmware upload "
1710 "failed, not enough memory\n", index + 1);
1714 insw(base, data, word_count);
1715 InterruptTheCard(base);
1717 for (a = 0; a < frame->count; a++)
1718 if (data[a] != frame->data[a]) {
1720 dev_err(&pdev->dev, "Card%d, firmware upload "
1721 "failed\n", index + 1);
1726 udelay(50); /* 0xf */
1728 if (WaitTillCardIsFree(base))
1731 if ((status = inw(base + 0x4)) != 0) {
1732 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1733 "Card Status:0x%x\n", index + 1, status);
1739 if (WaitTillCardIsFree(base))
1746 InterruptTheCard(base);
1747 outw(0x0, base + 0x4); /* for ISI4608 cards */
1749 board->status |= FIRMWARE_LOADED;
1753 release_firmware(fw);
1759 * Insmod can set static symbols so keep these static
1763 static int __devinit isicom_probe(struct pci_dev *pdev,
1764 const struct pci_device_id *ent)
1766 unsigned int ioaddr, signature, index;
1767 int retval = -EPERM;
1769 struct isi_board *board = NULL;
1771 if (card >= BOARD_COUNT)
1774 ioaddr = pci_resource_start(pdev, 3);
1775 /* i.e at offset 0x1c in the PCI configuration register space. */
1777 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1779 /* allot the first empty slot in the array */
1780 for (index = 0; index < BOARD_COUNT; index++)
1781 if (isi_card[index].base == 0) {
1782 board = &isi_card[index];
1786 board->index = index;
1787 board->base = ioaddr;
1788 board->irq = pciirq;
1791 pci_set_drvdata(pdev, board);
1793 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1795 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1796 "will be disabled.\n", board->base, board->base + 15,
1802 retval = request_irq(board->irq, isicom_interrupt,
1803 IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board);
1805 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1806 "Card%d will be disabled.\n", board->irq, index + 1);
1810 retval = reset_card(pdev, index, &signature);
1814 retval = load_firmware(pdev, index, signature);
1818 for (index = 0; index < board->port_count; index++)
1819 tty_register_device(isicom_normal, board->index * 16 + index,
1825 free_irq(board->irq, board);
1827 pci_release_region(pdev, 3);
1833 static void __devexit isicom_remove(struct pci_dev *pdev)
1835 struct isi_board *board = pci_get_drvdata(pdev);
1838 for (i = 0; i < board->port_count; i++)
1839 tty_unregister_device(isicom_normal, board->index * 16 + i);
1841 free_irq(board->irq, board);
1842 pci_release_region(pdev, 3);
1845 static int __init isicom_init(void)
1847 int retval, idx, channel;
1848 struct isi_port *port;
1852 for(idx = 0; idx < BOARD_COUNT; idx++) {
1853 port = &isi_ports[idx * 16];
1854 isi_card[idx].ports = port;
1855 spin_lock_init(&isi_card[idx].card_lock);
1856 for (channel = 0; channel < 16; channel++, port++) {
1857 port->magic = ISICOM_MAGIC;
1858 port->card = &isi_card[idx];
1859 port->channel = channel;
1860 port->close_delay = 50 * HZ/100;
1861 port->closing_wait = 3000 * HZ/100;
1862 INIT_WORK(&port->hangup_tq, do_isicom_hangup);
1863 INIT_WORK(&port->bh_tqueue, isicom_bottomhalf);
1865 init_waitqueue_head(&port->open_wait);
1866 init_waitqueue_head(&port->close_wait);
1869 isi_card[idx].base = 0;
1870 isi_card[idx].irq = 0;
1873 /* tty driver structure initialization */
1874 isicom_normal = alloc_tty_driver(PORT_COUNT);
1875 if (!isicom_normal) {
1880 isicom_normal->owner = THIS_MODULE;
1881 isicom_normal->name = "ttyM";
1882 isicom_normal->major = ISICOM_NMAJOR;
1883 isicom_normal->minor_start = 0;
1884 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1885 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1886 isicom_normal->init_termios = tty_std_termios;
1887 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1889 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
1890 TTY_DRIVER_DYNAMIC_DEV;
1891 tty_set_operations(isicom_normal, &isicom_ops);
1893 retval = tty_register_driver(isicom_normal);
1895 pr_dbg("Couldn't register the dialin driver\n");
1899 retval = pci_register_driver(&isicom_driver);
1901 printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
1905 mod_timer(&tx, jiffies + 1);
1909 tty_unregister_driver(isicom_normal);
1911 put_tty_driver(isicom_normal);
1916 static void __exit isicom_exit(void)
1920 wait_for_completion_timeout(&isi_timerdone, HZ);
1922 pci_unregister_driver(&isicom_driver);
1923 tty_unregister_driver(isicom_normal);
1924 put_tty_driver(isicom_normal);
1927 module_init(isicom_init);
1928 module_exit(isicom_exit);
1930 MODULE_AUTHOR("MultiTech");
1931 MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1932 MODULE_LICENSE("GPL");