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.
19 * 09/06/01 acme@conectiva.com.br use capable, not suser, do
20 * restore_flags on failure in
21 * isicom_send_break, verify put_user
23 * ***********************************************************
25 * To use this driver you also need the support package. You
26 * can find this in RPM format on
27 * ftp://ftp.linux.org.uk/pub/linux/alan
29 * You can find the original tools for this direct from Multitech
30 * ftp://ftp.multitech.com/ISI-Cards/
32 * Having installed the cards the module options (/etc/modprobe.conf)
34 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
36 * Omit those entries for boards you don't have installed.
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/tty.h>
43 #include <linux/termios.h>
45 #include <linux/sched.h>
46 #include <linux/serial.h>
48 #include <linux/miscdevice.h>
49 #include <linux/interrupt.h>
50 #include <linux/timer.h>
51 #include <linux/ioport.h>
53 #include <asm/uaccess.h>
55 #include <asm/system.h>
57 #include <linux/pci.h>
59 #include <linux/isicom.h>
61 static struct pci_device_id isicom_pci_tbl[] = {
62 { VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
63 { VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
64 { VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
65 { VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
66 { VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
67 { VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
68 { VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
69 { VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
70 { VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
73 MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
75 static int prev_card = 3; /* start servicing isi_card[0] */
76 static struct isi_board * irq_to_board[16];
77 static struct tty_driver *isicom_normal;
79 static struct isi_board isi_card[BOARD_COUNT];
80 static struct isi_port isi_ports[PORT_COUNT];
82 static struct timer_list tx;
83 static char re_schedule = 1;
85 static unsigned long tx_count = 0;
88 static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
90 static void isicom_tx(unsigned long _data);
91 static void isicom_start(struct tty_struct * tty);
93 static unsigned char * tmp_buf = 0;
94 static DECLARE_MUTEX(tmp_buf_sem);
96 /* baud index mappings from linux defns to isi */
98 static signed char linuxb_to_isib[] = {
99 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17,
104 * Firmware loader driver specific routines
108 static struct file_operations ISILoad_fops = {
109 .owner = THIS_MODULE,
110 .ioctl = ISILoad_ioctl,
113 struct miscdevice isiloader_device = {
114 ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops
118 static inline int WaitTillCardIsFree(unsigned short base)
120 unsigned long count=0;
121 while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000));
122 if (inw(base+0xe)&0x1)
128 static int ISILoad_ioctl(struct inode *inode, struct file *filp,
129 unsigned int cmd, unsigned long arg)
131 unsigned int card, i, j, signature, status, portcount = 0;
133 unsigned short word_count, base;
135 /* exec_record exec_rec; */
137 if(get_user(card, (int *)arg))
140 if(card < 0 || card >= BOARD_COUNT)
143 base=isi_card[card].base;
146 return -ENXIO; /* disabled or not used */
149 case MIOCTL_RESET_CARD:
150 if (!capable(CAP_SYS_ADMIN))
152 printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%x ",card+1,base);
156 for(t=jiffies+HZ/100;time_before(jiffies, t););
158 outw(0,base+0x8); /* Reset */
161 for(t=jiffies+HZ;time_before(jiffies, t););
164 signature=(inw(base+0x4)) & 0xff;
165 if (isi_card[card].isa) {
167 if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) {
169 printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
171 printk("\nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
176 portcount = inw(base+0x2);
177 if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) {
179 printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
181 printk("\nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
189 if (isi_card[card].isa)
190 isi_card[card].port_count = 8;
193 isi_card[card].port_count = 4;
195 isi_card[card].port_count = 8;
197 isi_card[card].shift_count = 12;
200 case 0xcc: isi_card[card].port_count = 16;
201 isi_card[card].shift_count = 11;
204 default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
206 printk("Sig=0x%x\n",signature);
211 return put_user(signature,(unsigned int*)arg);
213 case MIOCTL_LOAD_FIRMWARE:
214 if (!capable(CAP_SYS_ADMIN))
217 if(copy_from_user(&frame, (void *) arg, sizeof(bin_frame)))
220 if (WaitTillCardIsFree(base))
223 outw(0xf0,base); /* start upload sequence */
225 outw((frame.addr), base);/* lsb of adderess */
227 word_count=(frame.count >> 1) + frame.count % 2;
228 outw(word_count, base);
229 InterruptTheCard(base);
231 for(i=0;i<=0x2f;i++); /* a wee bit of delay */
233 if (WaitTillCardIsFree(base))
236 if ((status=inw(base+0x4))!=0) {
237 printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
238 card+1, frame.addr, frame.count, status);
241 outsw(base, (void *) frame.bin_data, word_count);
243 InterruptTheCard(base);
245 for(i=0;i<=0x0f;i++); /* another wee bit of delay */
247 if (WaitTillCardIsFree(base))
250 if ((status=inw(base+0x4))!=0) {
251 printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status);
256 case MIOCTL_READ_FIRMWARE:
257 if (!capable(CAP_SYS_ADMIN))
260 if(copy_from_user(&frame, (void *) arg, sizeof(bin_header)))
263 if (WaitTillCardIsFree(base))
266 outw(0xf1,base); /* start download sequence */
268 outw((frame.addr), base);/* lsb of adderess */
270 word_count=(frame.count >> 1) + frame.count % 2;
271 outw(word_count+1, base);
272 InterruptTheCard(base);
274 for(i=0;i<=0xf;i++); /* a wee bit of delay */
276 if (WaitTillCardIsFree(base))
279 if ((status=inw(base+0x4))!=0) {
280 printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
281 card+1, frame.addr, frame.count, status);
286 insw(base, frame.bin_data, word_count);
287 InterruptTheCard(base);
289 for(i=0;i<=0x0f;i++); /* another wee bit of delay */
291 if (WaitTillCardIsFree(base))
294 if ((status=inw(base+0x4))!=0) {
295 printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status);
299 if(copy_to_user((void *) arg, &frame, sizeof(bin_frame)))
303 case MIOCTL_XFER_CTRL:
304 if (!capable(CAP_SYS_ADMIN))
306 if (WaitTillCardIsFree(base))
313 InterruptTheCard(base);
314 outw(0x0, base+0x4); /* for ISI4608 cards */
316 isi_card[card].status |= FIRMWARE_LOADED;
321 printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd);
331 * ISICOM Driver specific routines ...
335 static inline int isicom_paranoia_check(struct isi_port const * port, char *name,
336 const char * routine)
339 static const char * badmagic =
340 KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.\n";
341 static const char * badport =
342 KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n";
344 printk(badport, name, routine);
347 if (port->magic != ISICOM_MAGIC) {
348 printk(badmagic, name, routine);
357 static void isicom_tx(unsigned long _data)
359 short count = (BOARD_COUNT-1), card, base;
360 short txcount, wait, wrd, residue, word_count, cnt;
361 struct isi_port * port;
362 struct tty_struct * tty;
369 /* find next active board */
370 card = (prev_card + 1) & 0x0003;
372 if (isi_card[card].status & BOARD_ACTIVE)
374 card = (card + 1) & 0x0003;
376 if (!(isi_card[card].status & BOARD_ACTIVE))
381 count = isi_card[card].port_count;
382 port = isi_card[card].ports;
383 base = isi_card[card].base;
384 for (;count > 0;count--, port++) {
385 /* port not active or tx disabled to force flow control */
386 if (!(port->status & ISI_TXOK))
390 save_flags(flags); cli();
391 txcount = MIN(TX_SIZE, port->xmit_cnt);
392 if ((txcount <= 0) || tty->stopped || tty->hw_stopped) {
393 restore_flags(flags);
397 while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
399 restore_flags(flags);
401 printk(KERN_DEBUG "ISICOM: isicom_tx:Card(0x%x) found busy.\n",
406 if (!(inw(base + 0x02) & (1 << port->channel))) {
407 restore_flags(flags);
409 printk(KERN_DEBUG "ISICOM: isicom_tx: cannot tx to 0x%x:%d.\n",
410 base, port->channel + 1);
415 printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n",
416 txcount, port->channel+1);
418 outw((port->channel << isi_card[card].shift_count) | txcount
423 cnt = MIN(txcount, (SERIAL_XMIT_SIZE - port->xmit_tail));
424 if (residue == YES) {
427 wrd |= (port->xmit_buf[port->xmit_tail] << 8);
428 port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
440 word_count = cnt >> 1;
441 outsw(base, port->xmit_buf+port->xmit_tail, word_count);
442 port->xmit_tail = (port->xmit_tail + (word_count << 1)) &
443 (SERIAL_XMIT_SIZE - 1);
444 txcount -= (word_count << 1);
445 port->xmit_cnt -= (word_count << 1);
448 wrd = port->xmit_buf[port->xmit_tail];
449 port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
455 InterruptTheCard(base);
456 if (port->xmit_cnt <= 0)
457 port->status &= ~ISI_TXOK;
458 if (port->xmit_cnt <= WAKEUP_CHARS)
459 schedule_work(&port->bh_tqueue);
460 restore_flags(flags);
463 /* schedule another tx for hopefully in about 10ms */
468 tx.expires = jiffies + HZ/100;
470 tx.function = isicom_tx;
476 /* Interrupt handlers */
479 static void isicom_bottomhalf(void * data)
481 struct isi_port * port = (struct isi_port *) data;
482 struct tty_struct * tty = port->tty;
487 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
488 tty->ldisc.write_wakeup)
489 (tty->ldisc.write_wakeup)(tty);
490 wake_up_interruptible(&tty->write_wait);
493 /* main interrupt handler routine */
494 static irqreturn_t isicom_interrupt(int irq, void *dev_id,
495 struct pt_regs *regs)
497 struct isi_board * card;
498 struct isi_port * port;
499 struct tty_struct * tty;
500 unsigned short base, header, word_count, count;
501 unsigned char channel;
505 * find the source of interrupt
508 for(count = 0; count < BOARD_COUNT; count++) {
509 card = &isi_card[count];
510 if (card->base != 0) {
511 if (((card->isa == YES) && (card->irq == irq)) ||
512 ((card->isa == NO) && (card->irq == irq) && (inw(card->base+0x0e) & 0x02)))
518 if (!card || !(card->status & FIRMWARE_LOADED)) {
519 /* printk(KERN_DEBUG "ISICOM: interrupt: not handling irq%d!.\n", irq);*/
524 if (card->isa == NO) {
526 * disable any interrupts from the PCI card and lower the
529 outw(0x8000, base+0x04);
530 ClearInterrupt(base);
533 inw(base); /* get the dummy word out */
535 channel = (header & 0x7800) >> card->shift_count;
536 byte_count = header & 0xff;
538 printk(KERN_DEBUG "ISICOM:Intr:(0x%x:%d).\n", base, channel+1);
540 if ((channel+1) > card->port_count) {
541 printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.\n",
544 ClearInterrupt(base);
546 outw(0x0000, base+0x04); /* enable interrupts */
549 port = card->ports + channel;
550 if (!(port->flags & ASYNC_INITIALIZED)) {
552 ClearInterrupt(base);
554 outw(0x0000, base+0x04); /* enable interrupts */
560 if (header & 0x8000) { /* Status Packet */
562 switch(header & 0xff) {
563 case 0: /* Change in EIA signals */
565 if (port->flags & ASYNC_CHECK_CD) {
566 if (port->status & ISI_DCD) {
567 if (!(header & ISI_DCD)) {
568 /* Carrier has been lost */
570 printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n");
572 port->status &= ~ISI_DCD;
573 schedule_work(&port->hangup_tq);
577 if (header & ISI_DCD) {
578 /* Carrier has been detected */
580 printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n");
582 port->status |= ISI_DCD;
583 wake_up_interruptible(&port->open_wait);
588 if (header & ISI_DCD)
589 port->status |= ISI_DCD;
591 port->status &= ~ISI_DCD;
594 if (port->flags & ASYNC_CTS_FLOW) {
595 if (port->tty->hw_stopped) {
596 if (header & ISI_CTS) {
597 port->tty->hw_stopped = 0;
599 port->status |= (ISI_TXOK | ISI_CTS);
600 schedule_work(&port->bh_tqueue);
604 if (!(header & ISI_CTS)) {
605 port->tty->hw_stopped = 1;
607 port->status &= ~(ISI_TXOK | ISI_CTS);
612 if (header & ISI_CTS)
613 port->status |= ISI_CTS;
615 port->status &= ~ISI_CTS;
618 if (header & ISI_DSR)
619 port->status |= ISI_DSR;
621 port->status &= ~ISI_DSR;
624 port->status |= ISI_RI;
626 port->status &= ~ISI_RI;
630 case 1: /* Received Break !!! */
631 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
633 *tty->flip.flag_buf_ptr++ = TTY_BREAK;
634 /* dunno if this is right */
635 *tty->flip.char_buf_ptr++ = 0;
637 if (port->flags & ASYNC_SAK)
639 schedule_delayed_work(&tty->flip.work, 1);
642 case 2: /* Statistics */
643 printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.\n");
647 printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.\n");
651 else { /* Data Packet */
652 count = MIN(byte_count, (TTY_FLIPBUF_SIZE - tty->flip.count));
654 printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n",
657 word_count = count >> 1;
658 insw(base, tty->flip.char_buf_ptr, word_count);
659 tty->flip.char_buf_ptr += (word_count << 1);
660 byte_count -= (word_count << 1);
661 if (count & 0x0001) {
662 *tty->flip.char_buf_ptr++ = (char)(inw(base) & 0xff);
665 memset(tty->flip.flag_buf_ptr, 0, count);
666 tty->flip.flag_buf_ptr += count;
667 tty->flip.count += count;
669 if (byte_count > 0) {
670 printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n",
672 while(byte_count > 0) { /* drain out unread xtra data */
677 schedule_delayed_work(&tty->flip.work, 1);
679 if (card->isa == YES)
680 ClearInterrupt(base);
682 outw(0x0000, base+0x04); /* enable interrupts */
686 /* called with interrupts disabled */
687 static void isicom_config_port(struct isi_port * port)
689 struct isi_board * card = port->card;
690 struct tty_struct * tty;
692 unsigned short channel_setup, wait, base = card->base;
693 unsigned short channel = port->channel, shift_count = card->shift_count;
694 unsigned char flow_ctrl;
696 if (!(tty = port->tty) || !tty->termios)
699 if (baud & CBAUDEX) {
702 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
703 * then the card is programmed for 57.6Kbps or 115Kbps
707 if (baud < 1 || baud > 2)
708 port->tty->termios->c_cflag &= ~CBAUDEX;
714 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
715 * by the set_serial_info ioctl ... this is done by
716 * the 'setserial' utility.
719 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
720 baud++; /* 57.6 Kbps */
721 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
722 baud +=2; /* 115 Kbps */
724 if (linuxb_to_isib[baud] == -1) {
733 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
735 printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at channel setup.\n");
738 outw(0x8000 | (channel << shift_count) |0x03, base);
739 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
741 switch(C_CSIZE(tty)) {
743 channel_setup |= ISICOM_CS5;
746 channel_setup |= ISICOM_CS6;
749 channel_setup |= ISICOM_CS7;
752 channel_setup |= ISICOM_CS8;
757 channel_setup |= ISICOM_2SB;
760 channel_setup |= ISICOM_EVPAR;
762 channel_setup |= ISICOM_ODPAR;
763 outw(channel_setup, base);
764 InterruptTheCard(base);
767 port->flags &= ~ASYNC_CHECK_CD;
769 port->flags |= ASYNC_CHECK_CD;
771 /* flow control settings ...*/
773 port->flags &= ~ASYNC_CTS_FLOW;
774 if (C_CRTSCTS(tty)) {
775 port->flags |= ASYNC_CTS_FLOW;
776 flow_ctrl |= ISICOM_CTSRTS;
779 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
781 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
784 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
786 printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at flow setup.\n");
789 outw(0x8000 | (channel << shift_count) |0x04, base);
790 outw(flow_ctrl << 8 | 0x05, base);
791 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
792 InterruptTheCard(base);
794 /* rx enabled -> enable port for rx on the card */
796 card->port_status |= (1 << channel);
797 outw(card->port_status, base + 0x02);
804 static inline void isicom_setup_board(struct isi_board * bp)
807 struct isi_port * port;
810 if (bp->status & BOARD_ACTIVE)
814 printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts start, port_count %d...\n", bp->port_count);
816 for(channel = 0; channel < bp->port_count; channel++, port++) {
817 save_flags(flags); cli();
819 restore_flags(flags);
822 printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts stop...\n");
825 bp->status |= BOARD_ACTIVE;
829 static int isicom_setup_port(struct isi_port * port)
831 struct isi_board * card = port->card;
834 if (port->flags & ASYNC_INITIALIZED)
836 if (!port->xmit_buf) {
839 if (!(page = get_zeroed_page(GFP_KERNEL)))
842 if (port->xmit_buf) {
846 port->xmit_buf = (unsigned char *) page;
848 save_flags(flags); cli();
850 clear_bit(TTY_IO_ERROR, &port->tty->flags);
851 if (port->count == 1)
854 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
856 /* discard any residual data */
857 kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX);
859 isicom_config_port(port);
860 port->flags |= ASYNC_INITIALIZED;
862 restore_flags(flags);
867 static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port)
869 int do_clocal = 0, retval;
870 DECLARE_WAITQUEUE(wait, current);
872 /* block if port is in the process of being closed */
874 if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
876 printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n");
878 interruptible_sleep_on(&port->close_wait);
879 if (port->flags & ASYNC_HUP_NOTIFY)
885 /* if non-blocking mode is set ... */
887 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
889 printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n");
891 port->flags |= ASYNC_NORMAL_ACTIVE;
899 printk(KERN_DEBUG "ISICOM: block_til_ready: CLOCAL set.\n");
902 /* block waiting for DCD to be asserted, and while
903 callout dev is busy */
905 add_wait_queue(&port->open_wait, &wait);
907 if (!tty_hung_up_p(filp))
910 port->blocked_open++;
912 printk(KERN_DEBUG "ISICOM: block_til_ready: waiting for DCD...\n");
918 set_current_state(TASK_INTERRUPTIBLE);
919 if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
920 if (port->flags & ASYNC_HUP_NOTIFY)
923 retval = -ERESTARTSYS;
925 printk(KERN_DEBUG "ISICOM: block_til_ready: tty_hung_up_p || not init.\n");
929 if (!(port->flags & ASYNC_CLOSING) &&
930 (do_clocal || (port->status & ISI_DCD))) {
932 printk(KERN_DEBUG "ISICOM: block_til_ready: do_clocal || DCD.\n");
936 if (signal_pending(current)) {
938 printk(KERN_DEBUG "ISICOM: block_til_ready: sig blocked.\n");
940 retval = -ERESTARTSYS;
945 set_current_state(TASK_RUNNING);
946 remove_wait_queue(&port->open_wait, &wait);
947 if (!tty_hung_up_p(filp))
949 port->blocked_open--;
952 port->flags |= ASYNC_NORMAL_ACTIVE;
956 static int isicom_open(struct tty_struct * tty, struct file * filp)
958 struct isi_port * port;
959 struct isi_board * card;
960 unsigned int line, board;
964 printk(KERN_DEBUG "ISICOM: open start!!!.\n");
969 printk(KERN_DEBUG "line = %d.\n", line);
972 if ((line < 0) || (line > (PORT_COUNT-1)))
977 printk(KERN_DEBUG "board = %d.\n", board);
980 card = &isi_card[board];
981 if (!(card->status & FIRMWARE_LOADED)) {
983 printk(KERN_DEBUG"ISICOM: Firmware not loaded to card%d.\n", board);
988 /* open on a port greater than the port count for the card !!! */
989 if (line > ((board * 16) + card->port_count - 1)) {
990 printk(KERN_ERR "ISICOM: Open on a port which exceeds the port_count of the card!\n");
993 port = &isi_ports[line];
994 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
998 printk(KERN_DEBUG "ISICOM: isicom_setup_board ...\n");
1000 isicom_setup_board(card);
1003 tty->driver_data = port;
1006 printk(KERN_DEBUG "ISICOM: isicom_setup_port ...\n");
1008 if ((error = isicom_setup_port(port))!=0)
1011 printk(KERN_DEBUG "ISICOM: block_til_ready ...\n");
1013 if ((error = block_til_ready(tty, filp, port))!=0)
1017 printk(KERN_DEBUG "ISICOM: open end!!!.\n");
1024 static inline void isicom_shutdown_board(struct isi_board * bp)
1027 struct isi_port * port;
1029 if (!(bp->status & BOARD_ACTIVE))
1031 bp->status &= ~BOARD_ACTIVE;
1033 for(channel = 0; channel < bp->port_count; channel++, port++) {
1038 static void isicom_shutdown_port(struct isi_port * port)
1040 struct isi_board * card = port->card;
1041 struct tty_struct * tty;
1043 if (!(port->flags & ASYNC_INITIALIZED))
1045 if (port->xmit_buf) {
1046 free_page((unsigned long) port->xmit_buf);
1047 port->xmit_buf = NULL;
1049 if (!(tty = port->tty) || C_HUPCL(tty))
1050 /* drop dtr on this port */
1053 /* any other port uninits */
1056 set_bit(TTY_IO_ERROR, &tty->flags);
1057 port->flags &= ~ASYNC_INITIALIZED;
1059 if (--card->count < 0) {
1060 printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.\n",
1061 card->base, card->count);
1065 /* last port was closed , shutdown that boad too */
1067 isicom_shutdown_board(card);
1070 static void isicom_close(struct tty_struct * tty, struct file * filp)
1072 struct isi_port * port = (struct isi_port *) tty->driver_data;
1073 struct isi_board * card = port->card;
1074 unsigned long flags;
1078 if (isicom_paranoia_check(port, tty->name, "isicom_close"))
1082 printk(KERN_DEBUG "ISICOM: Close start!!!.\n");
1085 save_flags(flags); cli();
1086 if (tty_hung_up_p(filp)) {
1087 restore_flags(flags);
1091 if ((tty->count == 1) && (port->count != 1)) {
1092 printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count"
1093 "tty->count = 1 port count = %d.\n",
1094 card->base, port->count);
1097 if (--port->count < 0) {
1098 printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for"
1099 "channel%d = %d", card->base, port->channel,
1105 restore_flags(flags);
1108 port->flags |= ASYNC_CLOSING;
1110 if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
1111 tty_wait_until_sent(tty, port->closing_wait);
1112 /* indicate to the card that no more data can be received
1114 if (port->flags & ASYNC_INITIALIZED) {
1115 card->port_status &= ~(1 << port->channel);
1116 outw(card->port_status, card->base + 0x02);
1118 isicom_shutdown_port(port);
1119 if (tty->driver->flush_buffer)
1120 tty->driver->flush_buffer(tty);
1121 if (tty->ldisc.flush_buffer)
1122 tty->ldisc.flush_buffer(tty);
1125 if (port->blocked_open) {
1126 if (port->close_delay) {
1127 set_current_state(TASK_INTERRUPTIBLE);
1129 printk(KERN_DEBUG "ISICOM: scheduling until time out.\n");
1131 schedule_timeout(port->close_delay);
1133 wake_up_interruptible(&port->open_wait);
1135 port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
1136 wake_up_interruptible(&port->close_wait);
1137 restore_flags(flags);
1139 printk(KERN_DEBUG "ISICOM: Close end!!!.\n");
1144 static int isicom_write(struct tty_struct * tty, int from_user,
1145 const unsigned char * buf, int count)
1147 struct isi_port * port = (struct isi_port *) tty->driver_data;
1148 unsigned long flags;
1151 printk(KERN_DEBUG "ISICOM: isicom_write for port%d: %d bytes.\n",
1152 port->channel+1, count);
1154 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
1157 if (!tty || !port->xmit_buf || !tmp_buf)
1160 down(&tmp_buf_sem); /* acquire xclusive access to tmp_buf */
1165 cnt = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
1166 SERIAL_XMIT_SIZE - port->xmit_head));
1171 /* the following may block for paging... hence
1172 enabling interrupts but tx routine may have
1173 created more space in xmit_buf when the ctrl
1176 if (copy_from_user(tmp_buf, buf, cnt)) {
1178 restore_flags(flags);
1182 cnt = MIN(cnt, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
1183 SERIAL_XMIT_SIZE - port->xmit_head));
1184 memcpy(port->xmit_buf + port->xmit_head, tmp_buf, cnt);
1187 memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
1188 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1);
1189 port->xmit_cnt += cnt;
1190 restore_flags(flags);
1197 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
1198 port->status |= ISI_TXOK;
1199 restore_flags(flags);
1201 printk(KERN_DEBUG "ISICOM: isicom_write %d bytes written.\n", total);
1206 /* put_char et all */
1207 static void isicom_put_char(struct tty_struct * tty, unsigned char ch)
1209 struct isi_port * port = (struct isi_port *) tty->driver_data;
1210 unsigned long flags;
1212 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
1215 if (!tty || !port->xmit_buf)
1218 printk(KERN_DEBUG "ISICOM: put_char, port %d, char %c.\n", port->channel+1, ch);
1221 save_flags(flags); cli();
1223 if (port->xmit_cnt >= (SERIAL_XMIT_SIZE - 1)) {
1224 restore_flags(flags);
1228 port->xmit_buf[port->xmit_head++] = ch;
1229 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
1231 restore_flags(flags);
1234 /* flush_chars et all */
1235 static void isicom_flush_chars(struct tty_struct * tty)
1237 struct isi_port * port = (struct isi_port *) tty->driver_data;
1239 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1242 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
1246 /* this tells the transmitter to consider this port for
1247 data output to the card ... that's the best we can do. */
1248 port->status |= ISI_TXOK;
1251 /* write_room et all */
1252 static int isicom_write_room(struct tty_struct * tty)
1254 struct isi_port * port = (struct isi_port *) tty->driver_data;
1256 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1259 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1265 /* chars_in_buffer et all */
1266 static int isicom_chars_in_buffer(struct tty_struct * tty)
1268 struct isi_port * port = (struct isi_port *) tty->driver_data;
1269 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1271 return port->xmit_cnt;
1275 static inline void isicom_send_break(struct isi_port * port, unsigned long length)
1277 struct isi_board * card = port->card;
1279 unsigned short base = card->base;
1280 unsigned long flags;
1282 save_flags(flags); cli();
1283 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
1285 printk(KERN_DEBUG "ISICOM: Card found busy in isicom_send_break.\n");
1288 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1289 outw((length & 0xff) << 8 | 0x00, base);
1290 outw((length & 0xff00), base);
1291 InterruptTheCard(base);
1292 out: restore_flags(flags);
1295 static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
1297 struct isi_port * port = (struct isi_port *) tty->driver_data;
1298 /* just send the port status */
1299 unsigned short status = port->status;
1301 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1304 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1305 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1306 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1307 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1308 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1309 ((status & ISI_RI ) ? TIOCM_RI : 0);
1312 static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
1313 unsigned int set, unsigned int clear)
1315 struct isi_port * port = (struct isi_port *) tty->driver_data;
1316 unsigned long flags;
1318 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1321 save_flags(flags); cli();
1322 if (set & TIOCM_RTS)
1324 if (set & TIOCM_DTR)
1327 if (clear & TIOCM_RTS)
1329 if (clear & TIOCM_DTR)
1332 restore_flags(flags);
1336 static int isicom_set_serial_info(struct isi_port * port,
1337 struct serial_struct * info)
1339 struct serial_struct newinfo;
1340 unsigned long flags;
1343 if(copy_from_user(&newinfo, info, sizeof(newinfo)))
1346 reconfig_port = ((port->flags & ASYNC_SPD_MASK) !=
1347 (newinfo.flags & ASYNC_SPD_MASK));
1349 if (!capable(CAP_SYS_ADMIN)) {
1350 if ((newinfo.close_delay != port->close_delay) ||
1351 (newinfo.closing_wait != port->closing_wait) ||
1352 ((newinfo.flags & ~ASYNC_USR_MASK) !=
1353 (port->flags & ~ASYNC_USR_MASK)))
1355 port->flags = ((port->flags & ~ ASYNC_USR_MASK) |
1356 (newinfo.flags & ASYNC_USR_MASK));
1359 port->close_delay = newinfo.close_delay;
1360 port->closing_wait = newinfo.closing_wait;
1361 port->flags = ((port->flags & ~ASYNC_FLAGS) |
1362 (newinfo.flags & ASYNC_FLAGS));
1364 if (reconfig_port) {
1365 save_flags(flags); cli();
1366 isicom_config_port(port);
1367 restore_flags(flags);
1372 static int isicom_get_serial_info(struct isi_port * port,
1373 struct serial_struct * info)
1375 struct serial_struct out_info;
1377 memset(&out_info, 0, sizeof(out_info));
1378 /* out_info.type = ? */
1379 out_info.line = port - isi_ports;
1380 out_info.port = port->card->base;
1381 out_info.irq = port->card->irq;
1382 out_info.flags = port->flags;
1383 /* out_info.baud_base = ? */
1384 out_info.close_delay = port->close_delay;
1385 out_info.closing_wait = port->closing_wait;
1386 if(copy_to_user(info, &out_info, sizeof(out_info)))
1391 static int isicom_ioctl(struct tty_struct * tty, struct file * filp,
1392 unsigned int cmd, unsigned long arg)
1394 struct isi_port * port = (struct isi_port *) tty->driver_data;
1397 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1402 retval = tty_check_change(tty);
1405 tty_wait_until_sent(tty, 0);
1407 isicom_send_break(port, HZ/4);
1411 retval = tty_check_change(tty);
1414 tty_wait_until_sent(tty, 0);
1415 isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4);
1419 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg);
1422 if(get_user(arg, (unsigned long *) arg))
1424 tty->termios->c_cflag =
1425 ((tty->termios->c_cflag & ~CLOCAL) |
1426 (arg ? CLOCAL : 0));
1430 return isicom_get_serial_info(port,
1431 (struct serial_struct *) arg);
1434 return isicom_set_serial_info(port,
1435 (struct serial_struct *) arg);
1438 return -ENOIOCTLCMD;
1443 /* set_termios et all */
1444 static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios)
1446 struct isi_port * port = (struct isi_port *) tty->driver_data;
1447 unsigned long flags;
1449 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1452 if (tty->termios->c_cflag == old_termios->c_cflag &&
1453 tty->termios->c_iflag == old_termios->c_iflag)
1456 save_flags(flags); cli();
1457 isicom_config_port(port);
1458 restore_flags(flags);
1460 if ((old_termios->c_cflag & CRTSCTS) &&
1461 !(tty->termios->c_cflag & CRTSCTS)) {
1462 tty->hw_stopped = 0;
1467 /* throttle et all */
1468 static void isicom_throttle(struct tty_struct * tty)
1470 struct isi_port * port = (struct isi_port *) tty->driver_data;
1471 struct isi_board * card = port->card;
1472 unsigned long flags;
1474 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1477 /* tell the card that this port cannot handle any more data for now */
1478 save_flags(flags); cli();
1479 card->port_status &= ~(1 << port->channel);
1480 outw(card->port_status, card->base + 0x02);
1481 restore_flags(flags);
1484 /* unthrottle et all */
1485 static void isicom_unthrottle(struct tty_struct * tty)
1487 struct isi_port * port = (struct isi_port *) tty->driver_data;
1488 struct isi_board * card = port->card;
1489 unsigned long flags;
1491 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1494 /* tell the card that this port is ready to accept more data */
1495 save_flags(flags); cli();
1496 card->port_status |= (1 << port->channel);
1497 outw(card->port_status, card->base + 0x02);
1498 restore_flags(flags);
1502 static void isicom_stop(struct tty_struct * tty)
1504 struct isi_port * port = (struct isi_port *) tty->driver_data;
1506 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1509 /* this tells the transmitter not to consider this port for
1510 data output to the card. */
1511 port->status &= ~ISI_TXOK;
1515 static void isicom_start(struct tty_struct * tty)
1517 struct isi_port * port = (struct isi_port *) tty->driver_data;
1519 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1522 /* this tells the transmitter to consider this port for
1523 data output to the card. */
1524 port->status |= ISI_TXOK;
1528 static void do_isicom_hangup(void * data)
1530 struct isi_port * port = (struct isi_port *) data;
1531 struct tty_struct * tty;
1535 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
1538 static void isicom_hangup(struct tty_struct * tty)
1540 struct isi_port * port = (struct isi_port *) tty->driver_data;
1542 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1545 isicom_shutdown_port(port);
1547 port->flags &= ~ASYNC_NORMAL_ACTIVE;
1549 wake_up_interruptible(&port->open_wait);
1552 /* flush_buffer et all */
1553 static void isicom_flush_buffer(struct tty_struct * tty)
1555 struct isi_port * port = (struct isi_port *) tty->driver_data;
1556 unsigned long flags;
1558 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
1561 save_flags(flags); cli();
1562 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1563 restore_flags(flags);
1565 wake_up_interruptible(&tty->write_wait);
1566 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
1567 tty->ldisc.write_wakeup)
1568 (tty->ldisc.write_wakeup)(tty);
1572 static int register_ioregion(void)
1575 for (count=0; count < BOARD_COUNT; count++ ) {
1576 if (isi_card[count].base)
1577 if (!request_region(isi_card[count].base,16,ISICOM_NAME)) {
1578 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x is busy. Card%d will be disabled.\n",
1579 isi_card[count].base,isi_card[count].base+15,count+1);
1580 isi_card[count].base=0;
1587 static void unregister_ioregion(void)
1590 for (count=0; count < BOARD_COUNT; count++ )
1591 if (isi_card[count].base) {
1592 release_region(isi_card[count].base,16);
1594 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x released for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1);
1599 static struct tty_operations isicom_ops = {
1600 .open = isicom_open,
1601 .close = isicom_close,
1602 .write = isicom_write,
1603 .put_char = isicom_put_char,
1604 .flush_chars = isicom_flush_chars,
1605 .write_room = isicom_write_room,
1606 .chars_in_buffer = isicom_chars_in_buffer,
1607 .ioctl = isicom_ioctl,
1608 .set_termios = isicom_set_termios,
1609 .throttle = isicom_throttle,
1610 .unthrottle = isicom_unthrottle,
1611 .stop = isicom_stop,
1612 .start = isicom_start,
1613 .hangup = isicom_hangup,
1614 .flush_buffer = isicom_flush_buffer,
1615 .tiocmget = isicom_tiocmget,
1616 .tiocmset = isicom_tiocmset,
1619 static int register_drivers(void)
1623 /* tty driver structure initialization */
1624 isicom_normal = alloc_tty_driver(PORT_COUNT);
1628 isicom_normal->owner = THIS_MODULE;
1629 isicom_normal->name = "ttyM";
1630 isicom_normal->devfs_name = "isicom/";
1631 isicom_normal->major = ISICOM_NMAJOR;
1632 isicom_normal->minor_start = 0;
1633 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1634 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1635 isicom_normal->init_termios = tty_std_termios;
1636 isicom_normal->init_termios.c_cflag =
1637 B9600 | CS8 | CREAD | HUPCL |CLOCAL;
1638 isicom_normal->flags = TTY_DRIVER_REAL_RAW;
1639 tty_set_operations(isicom_normal, &isicom_ops);
1641 if ((error=tty_register_driver(isicom_normal))!=0) {
1642 printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n",
1644 put_tty_driver(isicom_normal);
1650 static void unregister_drivers(void)
1652 int error = tty_unregister_driver(isicom_normal);
1654 printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.\n",error);
1655 put_tty_driver(isicom_normal);
1658 static int register_isr(void)
1660 int count, done=0, card;
1662 unsigned char request;
1663 for (count=0; count < BOARD_COUNT; count++ ) {
1664 if (isi_card[count].base) {
1666 * verify if the required irq has already been requested for
1667 * another ISI Card, if so we already have it, else request it
1670 for(card = 0; card < count; card++)
1671 if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
1673 if ((isi_card[count].isa == NO) && (isi_card[card].isa == NO))
1676 * ISA cards cannot share interrupts with other
1677 * PCI or ISA devices hence disable this card.
1679 release_region(isi_card[count].base,16);
1680 isi_card[count].base = 0;
1684 if(isi_card[count].isa == NO)
1687 if (request == YES) {
1688 if (request_irq(isi_card[count].irq, isicom_interrupt, SA_INTERRUPT|flag, ISICOM_NAME, NULL)) {
1689 printk(KERN_WARNING "ISICOM: Could not install handler at Irq %d. Card%d will be disabled.\n",
1690 isi_card[count].irq, count+1);
1691 release_region(isi_card[count].base,16);
1692 isi_card[count].base=0;
1695 printk(KERN_INFO "ISICOM: Card%d at 0x%x using irq %d.\n",
1696 count+1, isi_card[count].base, isi_card[count].irq);
1698 irq_to_board[isi_card[count].irq]=&isi_card[count];
1707 static void unregister_isr(void)
1710 unsigned char freeirq;
1711 for (count=0; count < BOARD_COUNT; count++ ) {
1712 if (isi_card[count].base) {
1714 for(card = 0; card < count; card++)
1715 if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
1719 if (freeirq == YES) {
1720 free_irq(isi_card[count].irq, NULL);
1722 printk(KERN_DEBUG "ISICOM: Irq %d released for Card%d.\n",isi_card[count].irq, count+1);
1729 static int isicom_init(void)
1731 int card, channel, base;
1732 struct isi_port * port;
1736 page = get_zeroed_page(GFP_KERNEL);
1739 printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n");
1741 printk(KERN_ERR "ISICOM: Not enough memory...\n");
1745 tmp_buf = (unsigned char *) page;
1748 if (!register_ioregion())
1750 printk(KERN_ERR "ISICOM: All required I/O space found busy.\n");
1751 free_page((unsigned long)tmp_buf);
1754 if (register_drivers())
1756 unregister_ioregion();
1757 free_page((unsigned long)tmp_buf);
1760 if (!register_isr())
1762 unregister_drivers();
1763 /* ioports already uregistered in register_isr */
1764 free_page((unsigned long)tmp_buf);
1768 memset(isi_ports, 0, sizeof(isi_ports));
1769 for (card = 0; card < BOARD_COUNT; card++) {
1770 port = &isi_ports[card * 16];
1771 isi_card[card].ports = port;
1772 base = isi_card[card].base;
1773 for (channel = 0; channel < 16; channel++, port++) {
1774 port->magic = ISICOM_MAGIC;
1775 port->card = &isi_card[card];
1776 port->channel = channel;
1777 port->close_delay = 50 * HZ/100;
1778 port->closing_wait = 3000 * HZ/100;
1779 INIT_WORK(&port->hangup_tq, do_isicom_hangup, port);
1780 INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port);
1782 init_waitqueue_head(&port->open_wait);
1783 init_waitqueue_head(&port->close_wait);
1792 * Insmod can set static symbols so keep these static
1798 MODULE_AUTHOR("MultiTech");
1799 MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1800 MODULE_LICENSE("GPL");
1801 MODULE_PARM(io, "1-4i");
1802 MODULE_PARM_DESC(io, "I/O ports for the cards");
1803 MODULE_PARM(irq, "1-4i");
1804 MODULE_PARM_DESC(irq, "Interrupts for the cards");
1806 int init_module(void)
1808 struct pci_dev *dev = NULL;
1809 int retval, card, idx, count;
1810 unsigned char pciirq;
1811 unsigned int ioaddr;
1814 for(idx=0; idx < BOARD_COUNT; idx++) {
1816 isi_card[idx].base=io[idx];
1817 isi_card[idx].irq=irq[idx];
1818 isi_card[idx].isa=YES;
1822 isi_card[idx].base = 0;
1823 isi_card[idx].irq = 0;
1827 for (idx=0 ;idx < card; idx++) {
1828 if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)||
1829 (isi_card[idx].irq==4)||(isi_card[idx].irq==5)||
1830 (isi_card[idx].irq==7)||(isi_card[idx].irq==10)||
1831 (isi_card[idx].irq==11)||(isi_card[idx].irq==12)||
1832 (isi_card[idx].irq==15))) {
1834 if (isi_card[idx].base) {
1835 printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n",
1836 isi_card[idx].irq, idx+1);
1837 isi_card[idx].base=0;
1843 if (card < BOARD_COUNT) {
1844 for (idx=0; idx < DEVID_COUNT; idx++) {
1847 if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev)))
1849 if (card >= BOARD_COUNT)
1852 if (pci_enable_device(dev))
1855 /* found a PCI ISI card! */
1856 ioaddr = pci_resource_start (dev, 3); /* i.e at offset 0x1c in the
1857 * PCI configuration register
1861 printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device);
1863 * allot the first empty slot in the array
1865 for (count=0; count < BOARD_COUNT; count++) {
1866 if (isi_card[count].base == 0) {
1867 isi_card[count].base = ioaddr;
1868 isi_card[count].irq = pciirq;
1869 isi_card[count].isa = NO;
1875 if (card >= BOARD_COUNT) break;
1879 if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) {
1880 printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n");
1884 retval = misc_register(&isiloader_device);
1886 printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n");
1890 if (!isicom_init()) {
1891 if (misc_deregister(&isiloader_device))
1892 printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
1897 tx.expires = jiffies + 1;
1899 tx.function = isicom_tx;
1906 void cleanup_module(void)
1909 set_current_state(TASK_INTERRUPTIBLE);
1910 schedule_timeout(HZ);
1913 printk("ISICOM: isicom_tx tx_count = %ld.\n", tx_count);
1917 printk("ISICOM: uregistering isr ...\n");
1922 printk("ISICOM: unregistering drivers ...\n");
1924 unregister_drivers();
1927 printk("ISICOM: unregistering ioregion ...\n");
1929 unregister_ioregion();
1932 printk("ISICOM: freeing tmp_buf ...\n");
1934 free_page((unsigned long)tmp_buf);
1937 printk("ISICOM: unregistering firmware loader ...\n");
1939 if (misc_deregister(&isiloader_device))
1940 printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");