isicom.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:52k
- /*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Original driver code supplied by Multi-Tech
- *
- * Changes
- * 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree
- * Obtain and use official major/minors
- * Loader switched to a misc device
- * (fixed range check bug as a side effect)
- * Printk clean up
- * 9/12/98 alan@redhat.com Rough port to 2.1.x
- *
- * 10/6/99 sameer Merged the ISA and PCI drivers to
- * a new unified driver.
- * 09/06/01 acme@conectiva.com.br use capable, not suser, do
- * restore_flags on failure in
- * isicom_send_break, verify put_user
- * result
- * ***********************************************************
- *
- * To use this driver you also need the support package. You
- * can find this in RPM format on
- * ftp://ftp.linux.org.uk/pub/linux/alan
- *
- * You can find the original tools for this direct from Multitech
- * ftp://ftp.multitech.com/ISI-Cards/
- *
- * Having installed the cards the module options (/etc/modules.conf)
- *
- * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
- *
- * Omit those entries for boards you don't have installed.
- *
- */
- #include <linux/module.h>
- #include <linux/version.h>
- #include <linux/kernel.h>
- #include <linux/tty.h>
- #include <linux/termios.h>
- #include <linux/fs.h>
- #include <linux/sched.h>
- #include <linux/serial.h>
- #include <linux/mm.h>
- #include <linux/miscdevice.h>
- #include <linux/interrupt.h>
- #include <linux/timer.h>
- #include <linux/ioport.h>
- #include <asm/segment.h>
- #include <asm/uaccess.h>
- #include <asm/io.h>
- #include <asm/system.h>
- #include <linux/pci.h>
- #include <linux/isicom.h>
- static struct pci_device_id isicom_pci_tbl[] = {
- { VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { 0 }
- };
- MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
- static int isicom_refcount;
- static int prev_card = 3; /* start servicing isi_card[0] */
- static struct isi_board * irq_to_board[16];
- static struct tty_driver isicom_normal, isicom_callout;
- static struct tty_struct * isicom_table[PORT_COUNT];
- static struct termios * isicom_termios[PORT_COUNT];
- static struct termios * isicom_termios_locked[PORT_COUNT];
- static struct isi_board isi_card[BOARD_COUNT];
- static struct isi_port isi_ports[PORT_COUNT];
- DECLARE_TASK_QUEUE(tq_isicom);
- static struct timer_list tx;
- static char re_schedule = 1;
- #ifdef ISICOM_DEBUG
- static unsigned long tx_count = 0;
- #endif
- static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
- static void isicom_tx(unsigned long _data);
- static void isicom_start(struct tty_struct * tty);
- static unsigned char * tmp_buf = 0;
- static DECLARE_MUTEX(tmp_buf_sem);
- /* baud index mappings from linux defns to isi */
- static signed char linuxb_to_isib[] = {
- -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17,
- 18, 19
- };
- /*
- * Firmware loader driver specific routines
- *
- */
- static struct file_operations ISILoad_fops = {
- owner: THIS_MODULE,
- ioctl: ISILoad_ioctl,
- };
- struct miscdevice isiloader_device = {
- ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops
- };
-
- extern inline int WaitTillCardIsFree(unsigned short base)
- {
- unsigned long count=0;
- while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000));
- if (inw(base+0xe)&0x1)
- return 0;
- else
- return 1;
- }
- static int ISILoad_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
- {
- unsigned int card, i, j, signature, status, portcount = 0;
- unsigned short word_count, base;
- bin_frame frame;
- /* exec_record exec_rec; */
-
- if(get_user(card, (int *)arg))
- return -EFAULT;
-
- if(card < 0 || card >= BOARD_COUNT)
- return -ENXIO;
-
- base=isi_card[card].base;
-
- if(base==0)
- return -ENXIO; /* disabled or not used */
-
- switch(cmd) {
- case MIOCTL_RESET_CARD:
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%x ",card+1,base);
-
- inw(base+0x8);
-
- for(i=jiffies+HZ/100;time_before(jiffies, i););
-
- outw(0,base+0x8); /* Reset */
-
- for(j=1;j<=3;j++) {
- for(i=jiffies+HZ;time_before(jiffies, i););
- printk(".");
- }
- signature=(inw(base+0x4)) & 0xff;
- if (isi_card[card].isa) {
-
- if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) {
- #ifdef ISICOM_DEBUG
- printk("nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
- #endif
- printk("nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%x).n",card+1,base);
- return -EIO;
- }
- }
- else {
- portcount = inw(base+0x2);
- if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) {
- #ifdef ISICOM_DEBUG
- printk("nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
- #endif
- printk("nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%x).n",card+1,base);
- return -EIO;
- }
- }
- switch(signature) {
- case 0xa5:
- case 0xbb:
- case 0xdd:
- if (isi_card[card].isa)
- isi_card[card].port_count = 8;
- else {
- if (portcount == 4)
- isi_card[card].port_count = 4;
- else
- isi_card[card].port_count = 8;
- }
- isi_card[card].shift_count = 12;
- break;
-
- case 0xcc: isi_card[card].port_count = 16;
- isi_card[card].shift_count = 11;
- break;
-
- default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%x).n",card+1,base);
- #ifdef ISICOM_DEBUG
- printk("Sig=0x%xn",signature);
- #endif
- return -EIO;
- }
- printk("-Donen");
- return put_user(signature,(unsigned int*)arg);
-
- case MIOCTL_LOAD_FIRMWARE:
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if(copy_from_user(&frame, (void *) arg, sizeof(bin_frame)))
- return -EFAULT;
-
- if (WaitTillCardIsFree(base))
- return -EIO;
-
- outw(0xf0,base); /* start upload sequence */
- outw(0x00,base);
- outw((frame.addr), base);/* lsb of adderess */
-
- word_count=(frame.count >> 1) + frame.count % 2;
- outw(word_count, base);
- InterruptTheCard(base);
-
- for(i=0;i<=0x2f;i++); /* a wee bit of delay */
-
- if (WaitTillCardIsFree(base))
- return -EIO;
-
- if ((status=inw(base+0x4))!=0) {
- printk(KERN_WARNING "ISILoad:Card%d rejected load header:nAddress:0x%x nCount:0x%x nStatus:0x%x n",
- card+1, frame.addr, frame.count, status);
- return -EIO;
- }
- outsw(base, (void *) frame.bin_data, word_count);
-
- InterruptTheCard(base);
-
- for(i=0;i<=0x0f;i++); /* another wee bit of delay */
-
- if (WaitTillCardIsFree(base))
- return -EIO;
-
- if ((status=inw(base+0x4))!=0) {
- printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%xn",card+1, status);
- return -EIO;
- }
- return 0;
-
- case MIOCTL_READ_FIRMWARE:
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if(copy_from_user(&frame, (void *) arg, sizeof(bin_header)))
- return -EFAULT;
-
- if (WaitTillCardIsFree(base))
- return -EIO;
-
- outw(0xf1,base); /* start download sequence */
- outw(0x00,base);
- outw((frame.addr), base);/* lsb of adderess */
-
- word_count=(frame.count >> 1) + frame.count % 2;
- outw(word_count+1, base);
- InterruptTheCard(base);
-
- for(i=0;i<=0xf;i++); /* a wee bit of delay */
-
- if (WaitTillCardIsFree(base))
- return -EIO;
-
- if ((status=inw(base+0x4))!=0) {
- printk(KERN_WARNING "ISILoad:Card%d rejected verify header:nAddress:0x%x nCount:0x%x nStatus:0x%x n",
- card+1, frame.addr, frame.count, status);
- return -EIO;
- }
-
- inw(base);
- insw(base, frame.bin_data, word_count);
- InterruptTheCard(base);
-
- for(i=0;i<=0x0f;i++); /* another wee bit of delay */
-
- if (WaitTillCardIsFree(base))
- return -EIO;
-
- if ((status=inw(base+0x4))!=0) {
- printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%xn",card+1, status);
- return -EIO;
- }
-
- if(copy_to_user((void *) arg, &frame, sizeof(bin_frame)))
- return -EFAULT;
- return 0;
-
- case MIOCTL_XFER_CTRL:
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- if (WaitTillCardIsFree(base))
- return -EIO;
-
- outw(0xf2, base);
- outw(0x800, base);
- outw(0x0, base);
- outw(0x0, base);
- InterruptTheCard(base);
- outw(0x0, base+0x4); /* for ISI4608 cards */
-
- isi_card[card].status |= FIRMWARE_LOADED;
- return 0;
-
- default:
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.n", cmd);
- #endif
- return -ENOIOCTLCMD;
-
- }
-
- }
-
- /*
- * ISICOM Driver specific routines ...
- *
- */
-
- static inline int isicom_paranoia_check(struct isi_port const * port, kdev_t dev,
- const char * routine)
- {
- #ifdef ISICOM_DEBUG
- static const char * badmagic =
- KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.n";
- static const char * badport =
- KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.n";
- if (!port) {
- printk(badport, kdevname(dev), routine);
- return 1;
- }
- if (port->magic != ISICOM_MAGIC) {
- printk(badmagic, kdevname(dev), routine);
- return 1;
- }
- #endif
- return 0;
- }
-
- extern inline void schedule_bh(struct isi_port * port)
- {
- queue_task(&port->bh_tqueue, &tq_isicom);
- mark_bh(ISICOM_BH);
- }
- /* Transmitter */
- static void isicom_tx(unsigned long _data)
- {
- short count = (BOARD_COUNT-1), card, base;
- short txcount, wait, wrd, residue, word_count, cnt;
- struct isi_port * port;
- struct tty_struct * tty;
- unsigned long flags;
-
- #ifdef ISICOM_DEBUG
- ++tx_count;
- #endif
-
- /* find next active board */
- card = (prev_card + 1) & 0x0003;
- while(count-- > 0) {
- if (isi_card[card].status & BOARD_ACTIVE)
- break;
- card = (card + 1) & 0x0003;
- }
- if (!(isi_card[card].status & BOARD_ACTIVE))
- goto sched_again;
-
- prev_card = card;
-
- count = isi_card[card].port_count;
- port = isi_card[card].ports;
- base = isi_card[card].base;
- for (;count > 0;count--, port++) {
- /* port not active or tx disabled to force flow control */
- if (!(port->status & ISI_TXOK))
- continue;
-
- tty = port->tty;
- save_flags(flags); cli();
- txcount = MIN(TX_SIZE, port->xmit_cnt);
- if ((txcount <= 0) || tty->stopped || tty->hw_stopped) {
- restore_flags(flags);
- continue;
- }
- wait = 200;
- while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
- if (wait <= 0) {
- restore_flags(flags);
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: isicom_tx:Card(0x%x) found busy.n",
- card);
- #endif
- continue;
- }
- if (!(inw(base + 0x02) & (1 << port->channel))) {
- restore_flags(flags);
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: isicom_tx: cannot tx to 0x%x:%d.n",
- base, port->channel + 1);
- #endif
- continue;
- }
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.n",
- txcount, port->channel+1);
- #endif
- outw((port->channel << isi_card[card].shift_count) | txcount
- , base);
- residue = NO;
- wrd = 0;
- while (1) {
- cnt = MIN(txcount, (SERIAL_XMIT_SIZE - port->xmit_tail));
- if (residue == YES) {
- residue = NO;
- if (cnt > 0) {
- wrd |= (port->xmit_buf[port->xmit_tail] << 8);
- port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
- port->xmit_cnt--;
- txcount--;
- cnt--;
- outw(wrd, base);
- }
- else {
- outw(wrd, base);
- break;
- }
- }
- if (cnt <= 0) break;
- word_count = cnt >> 1;
- outsw(base, port->xmit_buf+port->xmit_tail, word_count);
- port->xmit_tail = (port->xmit_tail + (word_count << 1)) &
- (SERIAL_XMIT_SIZE - 1);
- txcount -= (word_count << 1);
- port->xmit_cnt -= (word_count << 1);
- if (cnt & 0x0001) {
- residue = YES;
- wrd = port->xmit_buf[port->xmit_tail];
- port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
- port->xmit_cnt--;
- txcount--;
- }
- }
- InterruptTheCard(base);
- if (port->xmit_cnt <= 0)
- port->status &= ~ISI_TXOK;
- if (port->xmit_cnt <= WAKEUP_CHARS)
- schedule_bh(port);
- restore_flags(flags);
- }
- /* schedule another tx for hopefully in about 10ms */
- sched_again:
- if (!re_schedule)
- return;
- init_timer(&tx);
- tx.expires = jiffies + HZ/100;
- tx.data = 0;
- tx.function = isicom_tx;
- add_timer(&tx);
-
- return;
- }
-
- /* Interrupt handlers */
- static void do_isicom_bh(void)
- {
- run_task_queue(&tq_isicom);
- }
-
- static void isicom_bottomhalf(void * data)
- {
- struct isi_port * port = (struct isi_port *) data;
- struct tty_struct * tty = port->tty;
-
- if (!tty)
- return;
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
- wake_up_interruptible(&tty->write_wait);
- }
-
- /* main interrupt handler routine */
- static void isicom_interrupt(int irq, void * dev_id, struct pt_regs * regs)
- {
- struct isi_board * card;
- struct isi_port * port;
- struct tty_struct * tty;
- unsigned short base, header, word_count, count;
- unsigned char channel;
- short byte_count;
-
- /*
- * find the source of interrupt
- */
-
- for(count = 0; count < BOARD_COUNT; count++) {
- card = &isi_card[count];
- if (card->base != 0) {
- if (((card->isa == YES) && (card->irq == irq)) ||
- ((card->isa == NO) && (card->irq == irq) && (inw(card->base+0x0e) & 0x02)))
- break;
- }
- card = NULL;
- }
- if (!card || !(card->status & FIRMWARE_LOADED)) {
- /* printk(KERN_DEBUG "ISICOM: interrupt: not handling irq%d!.n", irq);*/
- return;
- }
-
- base = card->base;
- if (card->isa == NO) {
- /*
- * disable any interrupts from the PCI card and lower the
- * interrupt line
- */
- outw(0x8000, base+0x04);
- ClearInterrupt(base);
- }
-
- inw(base); /* get the dummy word out */
- header = inw(base);
- channel = (header & 0x7800) >> card->shift_count;
- byte_count = header & 0xff;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM:Intr:(0x%x:%d).n", base, channel+1);
- #endif
- if ((channel+1) > card->port_count) {
- printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.n",
- base, channel+1);
- if (card->isa)
- ClearInterrupt(base);
- else
- outw(0x0000, base+0x04); /* enable interrupts */
- return;
- }
- port = card->ports + channel;
- if (!(port->flags & ASYNC_INITIALIZED)) {
- if (card->isa)
- ClearInterrupt(base);
- else
- outw(0x0000, base+0x04); /* enable interrupts */
- return;
- }
-
- tty = port->tty;
-
- if (header & 0x8000) { /* Status Packet */
- header = inw(base);
- switch(header & 0xff) {
- case 0: /* Change in EIA signals */
-
- if (port->flags & ASYNC_CHECK_CD) {
- if (port->status & ISI_DCD) {
- if (!(header & ISI_DCD)) {
- /* Carrier has been lost */
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.n");
- #endif
- port->status &= ~ISI_DCD;
- if (!((port->flags & ASYNC_CALLOUT_ACTIVE) &&
- (port->flags & ASYNC_CALLOUT_NOHUP))) {
- MOD_INC_USE_COUNT;
- if (schedule_task(&port->hangup_tq) == 0)
- MOD_DEC_USE_COUNT;
- }
- }
- }
- else {
- if (header & ISI_DCD) {
- /* Carrier has been detected */
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.n");
- #endif
- port->status |= ISI_DCD;
- wake_up_interruptible(&port->open_wait);
- }
- }
- }
- else {
- if (header & ISI_DCD)
- port->status |= ISI_DCD;
- else
- port->status &= ~ISI_DCD;
- }
-
- if (port->flags & ASYNC_CTS_FLOW) {
- if (port->tty->hw_stopped) {
- if (header & ISI_CTS) {
- port->tty->hw_stopped = 0;
- /* start tx ing */
- port->status |= (ISI_TXOK | ISI_CTS);
- schedule_bh(port);
- }
- }
- else {
- if (!(header & ISI_CTS)) {
- port->tty->hw_stopped = 1;
- /* stop tx ing */
- port->status &= ~(ISI_TXOK | ISI_CTS);
- }
- }
- }
- else {
- if (header & ISI_CTS)
- port->status |= ISI_CTS;
- else
- port->status &= ~ISI_CTS;
- }
-
- if (header & ISI_DSR)
- port->status |= ISI_DSR;
- else
- port->status &= ~ISI_DSR;
-
- if (header & ISI_RI)
- port->status |= ISI_RI;
- else
- port->status &= ~ISI_RI;
-
- break;
-
- case 1: /* Received Break !!! */
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- break;
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- /* dunno if this is right */
- *tty->flip.char_buf_ptr++ = 0;
- tty->flip.count++;
- if (port->flags & ASYNC_SAK)
- do_SAK(tty);
- queue_task(&tty->flip.tqueue, &tq_timer);
- break;
-
- case 2: /* Statistics */
- printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.n");
- break;
-
- default:
- printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.n");
- break;
- }
- }
- else { /* Data Packet */
- count = MIN(byte_count, (TTY_FLIPBUF_SIZE - tty->flip.count));
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.n",
- count, byte_count);
- #endif
- word_count = count >> 1;
- insw(base, tty->flip.char_buf_ptr, word_count);
- tty->flip.char_buf_ptr += (word_count << 1);
- byte_count -= (word_count << 1);
- if (count & 0x0001) {
- *tty->flip.char_buf_ptr++ = (char)(inw(base) & 0xff);
- byte_count -= 2;
- }
- memset(tty->flip.flag_buf_ptr, 0, count);
- tty->flip.flag_buf_ptr += count;
- tty->flip.count += count;
-
- if (byte_count > 0) {
- printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...n",
- base, channel+1);
- while(byte_count > 0) { /* drain out unread xtra data */
- inw(base);
- byte_count -= 2;
- }
- }
- queue_task(&tty->flip.tqueue, &tq_timer);
- }
- if (card->isa == YES)
- ClearInterrupt(base);
- else
- outw(0x0000, base+0x04); /* enable interrupts */
- return;
- }
- /* called with interrupts disabled */
- static void isicom_config_port(struct isi_port * port)
- {
- struct isi_board * card = port->card;
- struct tty_struct * tty;
- unsigned long baud;
- unsigned short channel_setup, wait, base = card->base;
- unsigned short channel = port->channel, shift_count = card->shift_count;
- unsigned char flow_ctrl;
-
- if (!(tty = port->tty) || !tty->termios)
- return;
- baud = C_BAUD(tty);
- if (baud & CBAUDEX) {
- baud &= ~CBAUDEX;
-
- /* if CBAUDEX bit is on and the baud is set to either 50 or 75
- * then the card is programmed for 57.6Kbps or 115Kbps
- * respectively.
- */
-
- if (baud < 1 || baud > 2)
- port->tty->termios->c_cflag &= ~CBAUDEX;
- else
- baud += 15;
- }
- if (baud == 15) {
-
- /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
- * by the set_serial_info ioctl ... this is done by
- * the 'setserial' utility.
- */
-
- if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- baud++; /* 57.6 Kbps */
- if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- baud +=2; /* 115 Kbps */
- }
- if (linuxb_to_isib[baud] == -1) {
- /* hang up */
- drop_dtr(port);
- return;
- }
- else
- raise_dtr(port);
-
- wait = 100;
- while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
- if (!wait) {
- printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at channel setup.n");
- return;
- }
- outw(0x8000 | (channel << shift_count) |0x03, base);
- outw(linuxb_to_isib[baud] << 8 | 0x03, base);
- channel_setup = 0;
- switch(C_CSIZE(tty)) {
- case CS5:
- channel_setup |= ISICOM_CS5;
- break;
- case CS6:
- channel_setup |= ISICOM_CS6;
- break;
- case CS7:
- channel_setup |= ISICOM_CS7;
- break;
- case CS8:
- channel_setup |= ISICOM_CS8;
- break;
- }
-
- if (C_CSTOPB(tty))
- channel_setup |= ISICOM_2SB;
-
- if (C_PARENB(tty))
- channel_setup |= ISICOM_EVPAR;
- if (C_PARODD(tty))
- channel_setup |= ISICOM_ODPAR;
- outw(channel_setup, base);
- InterruptTheCard(base);
-
- if (C_CLOCAL(tty))
- port->flags &= ~ASYNC_CHECK_CD;
- else
- port->flags |= ASYNC_CHECK_CD;
-
- /* flow control settings ...*/
- flow_ctrl = 0;
- port->flags &= ~ASYNC_CTS_FLOW;
- if (C_CRTSCTS(tty)) {
- port->flags |= ASYNC_CTS_FLOW;
- flow_ctrl |= ISICOM_CTSRTS;
- }
- if (I_IXON(tty))
- flow_ctrl |= ISICOM_RESPOND_XONXOFF;
- if (I_IXOFF(tty))
- flow_ctrl |= ISICOM_INITIATE_XONXOFF;
-
- wait = 100;
- while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
- if (!wait) {
- printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at flow setup.n");
- return;
- }
- outw(0x8000 | (channel << shift_count) |0x04, base);
- outw(flow_ctrl << 8 | 0x05, base);
- outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
- InterruptTheCard(base);
-
- /* rx enabled -> enable port for rx on the card */
- if (C_CREAD(tty)) {
- card->port_status |= (1 << channel);
- outw(card->port_status, base + 0x02);
- }
-
- }
-
- /* open et all */
- extern inline void isicom_setup_board(struct isi_board * bp)
- {
- int channel;
- struct isi_port * port;
- unsigned long flags;
-
- if (bp->status & BOARD_ACTIVE)
- return;
- port = bp->ports;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts start, port_count %d...n", bp->port_count);
- #endif
- for(channel = 0; channel < bp->port_count; channel++, port++) {
- save_flags(flags); cli();
- drop_dtr_rts(port);
- restore_flags(flags);
- }
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts stop...n");
- #endif
-
- bp->status |= BOARD_ACTIVE;
- MOD_INC_USE_COUNT;
- return;
- }
-
- static int isicom_setup_port(struct isi_port * port)
- {
- struct isi_board * card = port->card;
- unsigned long flags;
-
- if (port->flags & ASYNC_INITIALIZED)
- return 0;
- if (!port->xmit_buf) {
- unsigned long page;
-
- if (!(page = get_free_page(GFP_KERNEL)))
- return -ENOMEM;
-
- if (port->xmit_buf) {
- free_page(page);
- return -ERESTARTSYS;
- }
- port->xmit_buf = (unsigned char *) page;
- }
- save_flags(flags); cli();
- if (port->tty)
- clear_bit(TTY_IO_ERROR, &port->tty->flags);
- if (port->count == 1)
- card->count++;
-
- port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
-
- /* discard any residual data */
- kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX);
-
- isicom_config_port(port);
- port->flags |= ASYNC_INITIALIZED;
-
- restore_flags(flags);
-
- return 0;
- }
-
- static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port)
- {
- int do_clocal = 0, retval;
- DECLARE_WAITQUEUE(wait, current);
- /* block if port is in the process of being closed */
- if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.n");
- #endif
- interruptible_sleep_on(&port->close_wait);
- if (port->flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- /* trying to open a callout device... check for constraints */
-
- if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: bl_ti_rdy: callout open.n");
- #endif
- if (port->flags & ASYNC_NORMAL_ACTIVE)
- return -EBUSY;
- if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
- (port->flags & ASYNC_SESSION_LOCKOUT) &&
- (port->session != current->session))
- return -EBUSY;
-
- if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
- (port->flags & ASYNC_PGRP_LOCKOUT) &&
- (port->pgrp != current->pgrp))
- return -EBUSY;
- port->flags |= ASYNC_CALLOUT_ACTIVE;
- cli();
- raise_dtr_rts(port);
- sti();
- return 0;
- }
-
- /* if non-blocking mode is set ... */
-
- if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.n");
- #endif
- if (port->flags & ASYNC_CALLOUT_ACTIVE)
- return -EBUSY;
- port->flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (port->flags & ASYNC_CALLOUT_ACTIVE) {
- if (port->normal_termios.c_cflag & CLOCAL)
- do_clocal = 1;
- } else {
- if (C_CLOCAL(tty))
- do_clocal = 1;
- }
- #ifdef ISICOM_DEBUG
- if (do_clocal)
- printk(KERN_DEBUG "ISICOM: block_til_ready: CLOCAL set.n");
- #endif
-
- /* block waiting for DCD to be asserted, and while
- callout dev is busy */
- retval = 0;
- add_wait_queue(&port->open_wait, &wait);
- cli();
- if (!tty_hung_up_p(filp))
- port->count--;
- sti();
- port->blocked_open++;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: block_til_ready: waiting for DCD...n");
- #endif
- while (1) {
- cli();
- if (!(port->flags & ASYNC_CALLOUT_ACTIVE))
- raise_dtr_rts(port);
-
- sti();
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
- if (port->flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: block_til_ready: tty_hung_up_p || not init.n");
- #endif
- break;
- }
- if (!(port->flags & ASYNC_CALLOUT_ACTIVE) &&
- !(port->flags & ASYNC_CLOSING) &&
- (do_clocal || (port->status & ISI_DCD))) {
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: block_til_ready: do_clocal || DCD.n");
- #endif
- break;
- }
- if (signal_pending(current)) {
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: block_til_ready: sig blocked.n");
- #endif
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->open_wait, &wait);
- if (!tty_hung_up_p(filp))
- port->count++;
- port->blocked_open--;
- if (retval)
- return retval;
- port->flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- static int isicom_open(struct tty_struct * tty, struct file * filp)
- {
- struct isi_port * port;
- struct isi_board * card;
- unsigned int line, board;
- unsigned long flags;
- int error;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: open start!!!.n");
- #endif
- line = MINOR(tty->device) - tty->driver.minor_start;
-
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "line = %d.n", line);
- #endif
-
- if ((line < 0) || (line > (PORT_COUNT-1)))
- return -ENODEV;
- board = BOARD(line);
-
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "board = %d.n", board);
- #endif
-
- card = &isi_card[board];
- if (!(card->status & FIRMWARE_LOADED)) {
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG"ISICOM: Firmware not loaded to card%d.n", board);
- #endif
- return -ENODEV;
- }
-
- /* open on a port greater than the port count for the card !!! */
- if (line > ((board * 16) + card->port_count - 1)) {
- printk(KERN_ERR "ISICOM: Open on a port which exceeds the port_count of the card!n");
- return -ENODEV;
- }
- port = &isi_ports[line];
- if (isicom_paranoia_check(port, tty->device, "isicom_open"))
- return -ENODEV;
-
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: isicom_setup_board ...n");
- #endif
- isicom_setup_board(card);
-
- port->count++;
- tty->driver_data = port;
- port->tty = tty;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: isicom_setup_port ...n");
- #endif
- if ((error = isicom_setup_port(port))!=0)
- return error;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: block_til_ready ...n");
- #endif
- if ((error = block_til_ready(tty, filp, port))!=0)
- return error;
-
- if ((port->count == 1) && (port->flags & ASYNC_SPLIT_TERMIOS)) {
- if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
- *tty->termios = port->normal_termios;
- else
- *tty->termios = port->callout_termios;
- save_flags(flags); cli();
- isicom_config_port(port);
- restore_flags(flags);
- }
-
- port->session = current->session;
- port->pgrp = current->pgrp;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: open end!!!.n");
- #endif
- return 0;
- }
-
- /* close et all */
- extern inline void isicom_shutdown_board(struct isi_board * bp)
- {
- int channel;
- struct isi_port * port;
-
- if (!(bp->status & BOARD_ACTIVE))
- return;
- bp->status &= ~BOARD_ACTIVE;
- port = bp->ports;
- for(channel = 0; channel < bp->port_count; channel++, port++) {
- drop_dtr_rts(port);
- }
- MOD_DEC_USE_COUNT;
- }
- static void isicom_shutdown_port(struct isi_port * port)
- {
- struct isi_board * card = port->card;
- struct tty_struct * tty;
-
- if (!(port->flags & ASYNC_INITIALIZED))
- return;
- if (port->xmit_buf) {
- free_page((unsigned long) port->xmit_buf);
- port->xmit_buf = NULL;
- }
- if (!(tty = port->tty) || C_HUPCL(tty))
- /* drop dtr on this port */
- drop_dtr(port);
-
- /* any other port uninits */
-
- if (tty)
- set_bit(TTY_IO_ERROR, &tty->flags);
- port->flags &= ~ASYNC_INITIALIZED;
-
- if (--card->count < 0) {
- printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.n",
- card->base, card->count);
- card->count = 0;
- }
-
- /* last port was closed , shutdown that boad too */
- if (!card->count)
- isicom_shutdown_board(card);
- }
- static void isicom_close(struct tty_struct * tty, struct file * filp)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- struct isi_board * card = port->card;
- unsigned long flags;
-
- if (!port)
- return;
- if (isicom_paranoia_check(port, tty->device, "isicom_close"))
- return;
-
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: Close start!!!.n");
- #endif
-
- save_flags(flags); cli();
- if (tty_hung_up_p(filp)) {
- restore_flags(flags);
- return;
- }
-
- if ((tty->count == 1) && (port->count != 1)) {
- printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count"
- "tty->count = 1 port count = %d.n",
- card->base, port->count);
- port->count = 1;
- }
- if (--port->count < 0) {
- printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for"
- "channel%d = %d", card->base, port->channel,
- port->count);
- port->count = 0;
- }
-
- if (port->count) {
- restore_flags(flags);
- return;
- }
- port->flags |= ASYNC_CLOSING;
- /*
- * save termios struct since callout and dialin termios may be
- * different.
- */
- if (port->flags & ASYNC_NORMAL_ACTIVE)
- port->normal_termios = *tty->termios;
- if (port->flags & ASYNC_CALLOUT_ACTIVE)
- port->callout_termios = *tty->termios;
-
- tty->closing = 1;
- if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, port->closing_wait);
- /* indicate to the card that no more data can be received
- on this port */
- if (port->flags & ASYNC_INITIALIZED) {
- card->port_status &= ~(1 << port->channel);
- outw(card->port_status, card->base + 0x02);
- }
- isicom_shutdown_port(port);
- if (tty->driver.flush_buffer)
- tty->driver.flush_buffer(tty);
- if (tty->ldisc.flush_buffer)
- tty->ldisc.flush_buffer(tty);
- tty->closing = 0;
- port->tty = 0;
- if (port->blocked_open) {
- if (port->close_delay) {
- set_current_state(TASK_INTERRUPTIBLE);
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: scheduling until time out.n");
- #endif
- schedule_timeout(port->close_delay);
- }
- wake_up_interruptible(&port->open_wait);
- }
- port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE |
- ASYNC_CLOSING);
- wake_up_interruptible(&port->close_wait);
- restore_flags(flags);
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: Close end!!!.n");
- #endif
- }
- /* write et all */
- static int isicom_write(struct tty_struct * tty, int from_user,
- const unsigned char * buf, int count)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- unsigned long flags;
- int cnt, total = 0;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: isicom_write for port%d: %d bytes.n",
- port->channel+1, count);
- #endif
- if (isicom_paranoia_check(port, tty->device, "isicom_write"))
- return 0;
-
- if (!tty || !port->xmit_buf || !tmp_buf)
- return 0;
- if (from_user)
- down(&tmp_buf_sem); /* acquire xclusive access to tmp_buf */
-
- save_flags(flags);
- while(1) {
- cli();
- cnt = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
- SERIAL_XMIT_SIZE - port->xmit_head));
- if (cnt <= 0)
- break;
-
- if (from_user) {
- /* the following may block for paging... hence
- enabling interrupts but tx routine may have
- created more space in xmit_buf when the ctrl
- gets back here */
- sti();
- copy_from_user(tmp_buf, buf, cnt);
- cli();
- cnt = MIN(cnt, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
- SERIAL_XMIT_SIZE - port->xmit_head));
- memcpy(port->xmit_buf + port->xmit_head, tmp_buf, cnt);
- }
- else
- memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
- port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1);
- port->xmit_cnt += cnt;
- restore_flags(flags);
- buf += cnt;
- count -= cnt;
- total += cnt;
- }
- if (from_user)
- up(&tmp_buf_sem);
- if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
- port->status |= ISI_TXOK;
- restore_flags(flags);
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: isicom_write %d bytes written.n", total);
- #endif
- return total;
- }
- /* put_char et all */
- static void isicom_put_char(struct tty_struct * tty, unsigned char ch)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- unsigned long flags;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_put_char"))
- return;
-
- if (!tty || !port->xmit_buf)
- return;
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: put_char, port %d, char %c.n", port->channel+1, ch);
- #endif
-
- save_flags(flags); cli();
-
- if (port->xmit_cnt >= (SERIAL_XMIT_SIZE - 1)) {
- restore_flags(flags);
- return;
- }
-
- port->xmit_buf[port->xmit_head++] = ch;
- port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
- port->xmit_cnt++;
- restore_flags(flags);
- }
- /* flush_chars et all */
- static void isicom_flush_chars(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_flush_chars"))
- return;
-
- if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
- !port->xmit_buf)
- return;
-
- /* this tells the transmitter to consider this port for
- data output to the card ... that's the best we can do. */
- port->status |= ISI_TXOK;
- }
- /* write_room et all */
- static int isicom_write_room(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- int free;
- if (isicom_paranoia_check(port, tty->device, "isicom_write_room"))
- return 0;
-
- free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
- if (free < 0)
- free = 0;
- return free;
- }
- /* chars_in_buffer et all */
- static int isicom_chars_in_buffer(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- if (isicom_paranoia_check(port, tty->device, "isicom_chars_in_buffer"))
- return 0;
- return port->xmit_cnt;
- }
- /* ioctl et all */
- extern inline void isicom_send_break(struct isi_port * port, unsigned long length)
- {
- struct isi_board * card = port->card;
- short wait = 10;
- unsigned short base = card->base;
- unsigned long flags;
-
- save_flags(flags); cli();
- while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
- if (!wait) {
- printk(KERN_DEBUG "ISICOM: Card found busy in isicom_send_break.n");
- goto out;
- }
- outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
- outw((length & 0xff) << 8 | 0x00, base);
- outw((length & 0xff00), base);
- InterruptTheCard(base);
- out: restore_flags(flags);
- }
- static int isicom_get_modem_info(struct isi_port * port, unsigned int * value)
- {
- /* just send the port status */
- unsigned int info;
- unsigned short status = port->status;
-
- info = ((status & ISI_RTS) ? TIOCM_RTS : 0) |
- ((status & ISI_DTR) ? TIOCM_DTR : 0) |
- ((status & ISI_DCD) ? TIOCM_CAR : 0) |
- ((status & ISI_DSR) ? TIOCM_DSR : 0) |
- ((status & ISI_CTS) ? TIOCM_CTS : 0) |
- ((status & ISI_RI ) ? TIOCM_RI : 0);
- return put_user(info, (unsigned int *) value);
- }
- static int isicom_set_modem_info(struct isi_port * port, unsigned int cmd,
- unsigned int * value)
- {
- unsigned int arg;
- unsigned long flags;
-
- if(get_user(arg, value))
- return -EFAULT;
-
- save_flags(flags); cli();
-
- switch(cmd) {
- case TIOCMBIS:
- if (arg & TIOCM_RTS)
- raise_rts(port);
- if (arg & TIOCM_DTR)
- raise_dtr(port);
- break;
-
- case TIOCMBIC:
- if (arg & TIOCM_RTS)
- drop_rts(port);
- if (arg & TIOCM_DTR)
- drop_dtr(port);
- break;
-
- case TIOCMSET:
- if (arg & TIOCM_RTS)
- raise_rts(port);
- else
- drop_rts(port);
-
- if (arg & TIOCM_DTR)
- raise_dtr(port);
- else
- drop_dtr(port);
- break;
-
- default:
- restore_flags(flags);
- return -EINVAL;
- }
- restore_flags(flags);
- return 0;
- }
- static int isicom_set_serial_info(struct isi_port * port,
- struct serial_struct * info)
- {
- struct serial_struct newinfo;
- unsigned long flags;
- int reconfig_port;
- if(copy_from_user(&newinfo, info, sizeof(newinfo)))
- return -EFAULT;
-
- reconfig_port = ((port->flags & ASYNC_SPD_MASK) !=
- (newinfo.flags & ASYNC_SPD_MASK));
-
- if (!capable(CAP_SYS_ADMIN)) {
- if ((newinfo.close_delay != port->close_delay) ||
- (newinfo.closing_wait != port->closing_wait) ||
- ((newinfo.flags & ~ASYNC_USR_MASK) !=
- (port->flags & ~ASYNC_USR_MASK)))
- return -EPERM;
- port->flags = ((port->flags & ~ ASYNC_USR_MASK) |
- (newinfo.flags & ASYNC_USR_MASK));
- }
- else {
- port->close_delay = newinfo.close_delay;
- port->closing_wait = newinfo.closing_wait;
- port->flags = ((port->flags & ~ASYNC_FLAGS) |
- (newinfo.flags & ASYNC_FLAGS));
- }
- if (reconfig_port) {
- save_flags(flags); cli();
- isicom_config_port(port);
- restore_flags(flags);
- }
- return 0;
- }
- static int isicom_get_serial_info(struct isi_port * port,
- struct serial_struct * info)
- {
- struct serial_struct out_info;
-
- memset(&out_info, 0, sizeof(out_info));
- /* out_info.type = ? */
- out_info.line = port - isi_ports;
- out_info.port = port->card->base;
- out_info.irq = port->card->irq;
- out_info.flags = port->flags;
- /* out_info.baud_base = ? */
- out_info.close_delay = port->close_delay;
- out_info.closing_wait = port->closing_wait;
- if(copy_to_user(info, &out_info, sizeof(out_info)))
- return -EFAULT;
- return 0;
- }
- static int isicom_ioctl(struct tty_struct * tty, struct file * filp,
- unsigned int cmd, unsigned long arg)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- int retval;
- if (isicom_paranoia_check(port, tty->device, "isicom_ioctl"))
- return -ENODEV;
- switch(cmd) {
- case TCSBRK:
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- if (!arg)
- isicom_send_break(port, HZ/4);
- return 0;
-
- case TCSBRKP:
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4);
- return 0;
-
- case TIOCGSOFTCAR:
- return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg);
-
- case TIOCSSOFTCAR:
- if(get_user(arg, (unsigned long *) arg))
- return -EFAULT;
- tty->termios->c_cflag =
- ((tty->termios->c_cflag & ~CLOCAL) |
- (arg ? CLOCAL : 0));
- return 0;
-
- case TIOCMGET:
- return isicom_get_modem_info(port, (unsigned int*) arg);
-
- case TIOCMBIS:
- case TIOCMBIC:
- case TIOCMSET:
- return isicom_set_modem_info(port, cmd,
- (unsigned int *) arg);
-
- case TIOCGSERIAL:
- return isicom_get_serial_info(port,
- (struct serial_struct *) arg);
-
- case TIOCSSERIAL:
- return isicom_set_serial_info(port,
- (struct serial_struct *) arg);
-
- default:
- return -ENOIOCTLCMD;
- }
- return 0;
- }
- /* set_termios et all */
- static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- unsigned long flags;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_set_termios"))
- return;
-
- if (tty->termios->c_cflag == old_termios->c_cflag &&
- tty->termios->c_iflag == old_termios->c_iflag)
- return;
-
- save_flags(flags); cli();
- isicom_config_port(port);
- restore_flags(flags);
-
- if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
- isicom_start(tty);
- }
- }
- /* throttle et all */
- static void isicom_throttle(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- struct isi_board * card = port->card;
- unsigned long flags;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_throttle"))
- return;
-
- /* tell the card that this port cannot handle any more data for now */
- save_flags(flags); cli();
- card->port_status &= ~(1 << port->channel);
- outw(card->port_status, card->base + 0x02);
- restore_flags(flags);
- }
- /* unthrottle et all */
- static void isicom_unthrottle(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- struct isi_board * card = port->card;
- unsigned long flags;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_unthrottle"))
- return;
-
- /* tell the card that this port is ready to accept more data */
- save_flags(flags); cli();
- card->port_status |= (1 << port->channel);
- outw(card->port_status, card->base + 0x02);
- restore_flags(flags);
- }
- /* stop et all */
- static void isicom_stop(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- if (isicom_paranoia_check(port, tty->device, "isicom_stop"))
- return;
-
- /* this tells the transmitter not to consider this port for
- data output to the card. */
- port->status &= ~ISI_TXOK;
- }
- /* start et all */
- static void isicom_start(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_start"))
- return;
-
- /* this tells the transmitter to consider this port for
- data output to the card. */
- port->status |= ISI_TXOK;
- }
- /* hangup et all */
- static void do_isicom_hangup(void * data)
- {
- struct isi_port * port = (struct isi_port *) data;
- struct tty_struct * tty;
-
- tty = port->tty;
- if (tty)
- tty_hangup(tty); /* FIXME: module removal race here - AKPM */
- MOD_DEC_USE_COUNT;
- }
- static void isicom_hangup(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_hangup"))
- return;
-
- isicom_shutdown_port(port);
- port->count = 0;
- port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
- port->tty = 0;
- wake_up_interruptible(&port->open_wait);
- }
- /* flush_buffer et all */
- static void isicom_flush_buffer(struct tty_struct * tty)
- {
- struct isi_port * port = (struct isi_port *) tty->driver_data;
- unsigned long flags;
-
- if (isicom_paranoia_check(port, tty->device, "isicom_flush_buffer"))
- return;
-
- save_flags(flags); cli();
- port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
- restore_flags(flags);
-
- wake_up_interruptible(&tty->write_wait);
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
- }
- static int register_ioregion(void)
- {
- int count, done=0;
- for (count=0; count < BOARD_COUNT; count++ ) {
- if (isi_card[count].base) {
- if (check_region(isi_card[count].base,16)) {
- printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x is busy. Card%d will be disabled.n",
- isi_card[count].base,isi_card[count].base+15,count+1);
- isi_card[count].base=0;
- }
- else {
- request_region(isi_card[count].base,16,ISICOM_NAME);
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x requested for Card%d.n",isi_card[count].base,isi_card[count].base+15,count+1);
- #endif
- done++;
- }
- }
- }
- return done;
- }
- static void unregister_ioregion(void)
- {
- int count;
- for (count=0; count < BOARD_COUNT; count++ )
- if (isi_card[count].base) {
- release_region(isi_card[count].base,16);
- #ifdef ISICOM_DEBUG
- 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);
- #endif
- }
- }
- static int register_drivers(void)
- {
- int error;
- /* tty driver structure initialization */
- memset(&isicom_normal, 0, sizeof(struct tty_driver));
- isicom_normal.magic = TTY_DRIVER_MAGIC;
- isicom_normal.name = "ttyM";
- isicom_normal.major = ISICOM_NMAJOR;
- isicom_normal.minor_start = 0;
- isicom_normal.num = PORT_COUNT;
- isicom_normal.type = TTY_DRIVER_TYPE_SERIAL;
- isicom_normal.subtype = SERIAL_TYPE_NORMAL;
- isicom_normal.init_termios = tty_std_termios;
- isicom_normal.init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL |CLOCAL;
- isicom_normal.flags = TTY_DRIVER_REAL_RAW;
- isicom_normal.refcount = &isicom_refcount;
-
- isicom_normal.table = isicom_table;
- isicom_normal.termios = isicom_termios;
- isicom_normal.termios_locked = isicom_termios_locked;
-
- isicom_normal.open = isicom_open;
- isicom_normal.close = isicom_close;
- isicom_normal.write = isicom_write;
- isicom_normal.put_char = isicom_put_char;
- isicom_normal.flush_chars = isicom_flush_chars;
- isicom_normal.write_room = isicom_write_room;
- isicom_normal.chars_in_buffer = isicom_chars_in_buffer;
- isicom_normal.ioctl = isicom_ioctl;
- isicom_normal.set_termios = isicom_set_termios;
- isicom_normal.throttle = isicom_throttle;
- isicom_normal.unthrottle = isicom_unthrottle;
- isicom_normal.stop = isicom_stop;
- isicom_normal.start = isicom_start;
- isicom_normal.hangup = isicom_hangup;
- isicom_normal.flush_buffer = isicom_flush_buffer;
-
- /* callout device */
-
- isicom_callout = isicom_normal;
- isicom_callout.name = "cum";
- isicom_callout.major = ISICOM_CMAJOR;
- isicom_callout.subtype = SERIAL_TYPE_CALLOUT;
-
- if ((error=tty_register_driver(&isicom_normal))!=0) {
- printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%dn",
- error);
- return error;
- }
- if ((error=tty_register_driver(&isicom_callout))!=0) {
- tty_unregister_driver(&isicom_normal);
- printk(KERN_DEBUG "ISICOM: Couldn't register the callout driver, error=%dn",
- error);
- return error;
- }
- return 0;
- }
- static void unregister_drivers(void)
- {
- int error;
- if ((error=tty_unregister_driver(&isicom_callout))!=0)
- printk(KERN_DEBUG "ISICOM: couldn't unregister callout driver error=%d.n",error);
- if (tty_unregister_driver(&isicom_normal))
- printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.n",error);
- }
- static int register_isr(void)
- {
- int count, done=0, card;
- int flag;
- unsigned char request;
- for (count=0; count < BOARD_COUNT; count++ ) {
- if (isi_card[count].base) {
- /*
- * verify if the required irq has already been requested for
- * another ISI Card, if so we already have it, else request it
- */
- request = YES;
- for(card = 0; card < count; card++)
- if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
- request = NO;
- if ((isi_card[count].isa == NO) && (isi_card[card].isa == NO))
- break;
- /*
- * ISA cards cannot share interrupts with other
- * PCI or ISA devices hence disable this card.
- */
- release_region(isi_card[count].base,16);
- isi_card[count].base = 0;
- break;
- }
- flag=0;
- if(isi_card[count].isa == NO)
- flag |= SA_SHIRQ;
-
- if (request == YES) {
- if (request_irq(isi_card[count].irq, isicom_interrupt, SA_INTERRUPT|flag, ISICOM_NAME, NULL)) {
- printk(KERN_WARNING "ISICOM: Could not install handler at Irq %d. Card%d will be disabled.n",
- isi_card[count].irq, count+1);
- release_region(isi_card[count].base,16);
- isi_card[count].base=0;
- }
- else {
- printk(KERN_INFO "ISICOM: Card%d at 0x%x using irq %d.n",
- count+1, isi_card[count].base, isi_card[count].irq);
-
- irq_to_board[isi_card[count].irq]=&isi_card[count];
- done++;
- }
- }
- }
- }
- return done;
- }
- static void unregister_isr(void)
- {
- int count, card;
- unsigned char freeirq;
- for (count=0; count < BOARD_COUNT; count++ ) {
- if (isi_card[count].base) {
- freeirq = YES;
- for(card = 0; card < count; card++)
- if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
- freeirq = NO;
- break;
- }
- if (freeirq == YES) {
- free_irq(isi_card[count].irq, NULL);
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: Irq %d released for Card%d.n",isi_card[count].irq, count+1);
- #endif
- }
- }
- }
- }
- static int isicom_init(void)
- {
- int card, channel, base;
- struct isi_port * port;
- unsigned long page;
-
- if (!tmp_buf) {
- page = get_free_page(GFP_KERNEL);
- if (!page) {
- #ifdef ISICOM_DEBUG
- printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.n");
- #else
- printk(KERN_ERR "ISICOM: Not enough memory...n");
- #endif
- return 0;
- }
- tmp_buf = (unsigned char *) page;
- }
-
- if (!register_ioregion())
- {
- printk(KERN_ERR "ISICOM: All required I/O space found busy.n");
- free_page((unsigned long)tmp_buf);
- return 0;
- }
- if (register_drivers())
- {
- unregister_ioregion();
- free_page((unsigned long)tmp_buf);
- return 0;
- }
- if (!register_isr())
- {
- unregister_drivers();
- /* ioports already uregistered in register_isr */
- free_page((unsigned long)tmp_buf);
- return 0;
- }
-
- /* initialize bottom half */
- init_bh(ISICOM_BH, do_isicom_bh);
- memset(isi_ports, 0, sizeof(isi_ports));
- for (card = 0; card < BOARD_COUNT; card++) {
- port = &isi_ports[card * 16];
- isi_card[card].ports = port;
- base = isi_card[card].base;
- for (channel = 0; channel < 16; channel++, port++) {
- port->magic = ISICOM_MAGIC;
- port->card = &isi_card[card];
- port->channel = channel;
- port->normal_termios = isicom_normal.init_termios;
- port->callout_termios = isicom_callout.init_termios;
- port->close_delay = 50 * HZ/100;
- port->closing_wait = 3000 * HZ/100;
- port->hangup_tq.routine = do_isicom_hangup;
- port->hangup_tq.data = port;
- port->bh_tqueue.routine = isicom_bottomhalf;
- port->bh_tqueue.data = port;
- port->status = 0;
- init_waitqueue_head(&port->open_wait);
- init_waitqueue_head(&port->close_wait);
- /* . . . */
- }
- }
-
- return 1;
- }
- /*
- * Insmod can set static symbols so keep these static
- */
-
- static int io[4];
- static int irq[4];
- MODULE_AUTHOR("MultiTech");
- MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
- MODULE_LICENSE("GPL");
- MODULE_PARM(io, "1-4i");
- MODULE_PARM_DESC(io, "I/O ports for the cards");
- MODULE_PARM(irq, "1-4i");
- MODULE_PARM_DESC(irq, "Interrupts for the cards");
- int init_module(void)
- {
- struct pci_dev *dev = NULL;
- int retval, card, idx, count;
- unsigned char pciirq;
- unsigned int ioaddr;
-
- card = 0;
- for(idx=0; idx < BOARD_COUNT; idx++) {
- if (io[idx]) {
- isi_card[idx].base=io[idx];
- isi_card[idx].irq=irq[idx];
- isi_card[idx].isa=YES;
- card++;
- }
- else {
- isi_card[idx].base = 0;
- isi_card[idx].irq = 0;
- }
- }
-
- for (idx=0 ;idx < card; idx++) {
- if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)||
- (isi_card[idx].irq==4)||(isi_card[idx].irq==5)||
- (isi_card[idx].irq==7)||(isi_card[idx].irq==10)||
- (isi_card[idx].irq==11)||(isi_card[idx].irq==12)||
- (isi_card[idx].irq==15))) {
-
- if (isi_card[idx].base) {
- printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...n",
- isi_card[idx].irq, idx+1);
- isi_card[idx].base=0;
- card--;
- }
- }
- }
-
- if (pci_present() && (card < BOARD_COUNT)) {
- for (idx=0; idx < DEVID_COUNT; idx++) {
- dev = NULL;
- for (;;){
- if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev)))
- break;
- if (card >= BOARD_COUNT)
- break;
-
- if (pci_enable_device(dev))
- break;
- /* found a PCI ISI card! */
- ioaddr = pci_resource_start (dev, 3); /* i.e at offset 0x1c in the
- * PCI configuration register
- * space.
- */
- pciirq = dev->irq;
- printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)n", isicom_pci_tbl[idx].device);
- /*
- * allot the first empty slot in the array
- */
- for (count=0; count < BOARD_COUNT; count++) {
- if (isi_card[count].base == 0) {
- isi_card[count].base = ioaddr;
- isi_card[count].irq = pciirq;
- isi_card[count].isa = NO;
- card++;
- break;
- }
- }
- }
- if (card >= BOARD_COUNT) break;
- }
- }
-
- if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) {
- printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...n");
- return -EIO;
- }
- retval=misc_register(&isiloader_device);
- if (retval<0) {
- printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.n");
- return -EIO;
- }
-
- if (!isicom_init()) {
- if (misc_deregister(&isiloader_device))
- printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader drivern");
- return -EIO;
- }
-
- init_timer(&tx);
- tx.expires = jiffies + 1;
- tx.data = 0;
- tx.function = isicom_tx;
- re_schedule = 1;
- add_timer(&tx);
-
- return 0;
- }
- void cleanup_module(void)
- {
- re_schedule = 0;
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ);
- remove_bh(ISICOM_BH);
-
- #ifdef ISICOM_DEBUG
- printk("ISICOM: isicom_tx tx_count = %ld.n", tx_count);
- #endif
- #ifdef ISICOM_DEBUG
- printk("ISICOM: uregistering isr ...n");
- #endif
- unregister_isr();
- #ifdef ISICOM_DEBUG
- printk("ISICOM: unregistering drivers ...n");
- #endif
- unregister_drivers();
-
- #ifdef ISICOM_DEBUG
- printk("ISICOM: unregistering ioregion ...n");
- #endif
- unregister_ioregion();
-
- #ifdef ISICOM_DEBUG
- printk("ISICOM: freeing tmp_buf ...n");
- #endif
- free_page((unsigned long)tmp_buf);
-
- #ifdef ISICOM_DEBUG
- printk("ISICOM: unregistering firmware loader ...n");
- #endif
- if (misc_deregister(&isiloader_device))
- printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader drivern");
- }