diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/isicom.c | 1365 |
1 files changed, 682 insertions, 683 deletions
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 86033bed5d6..761c5622b7a 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -20,7 +20,7 @@ * 3/9/99 sameer Added support for ISI4616 cards. * * 16/9/99 sameer We do not force RTS low anymore. - * This is to prevent the firmware + * This is to prevent the firmware * from getting confused. * * 26/10/99 sameer Cosmetic changes:The driver now @@ -31,28 +31,28 @@ * * 10/5/00 sameer Fixed isicom_shutdown_board() * to not lower DTR on all the ports - * when the last port on the card is + * when the last port on the card is * closed. * * 10/5/00 sameer Signal mask setup command added - * to isicom_setup_port and + * to isicom_setup_port and * isicom_shutdown_port. * * 24/5/00 sameer The driver is now SMP aware. - * - * + * + * * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem - * - * + * + * * 03/01/01 anil .s Added support for resetting the * internal modems on ISI cards. * * 08/02/01 anil .s Upgraded the driver for kernel * 2.4.x * - * 11/04/01 Kevin Fixed firmware load problem with + * 11/04/01 Kevin Fixed firmware load problem with * ISIHP-4X card - * + * * 30/04/01 anil .s Fixed the remote login through * ISI port problem. Now the link * does not go down before password @@ -62,9 +62,9 @@ * among ISI-PCI cards. * * 03/05/01 anil .s Added support to display the version - * info during insmod as well as module + * info during insmod as well as module * listing by lsmod. - * + * * 10/05/01 anil .s Done the modifications to the source * file and Install script so that the * same installation can be used for @@ -73,19 +73,19 @@ * 06/06/01 anil .s Now we drop both dtr and rts during * shutdown_port as well as raise them * during isicom_config_port. - * + * * 09/06/01 acme@conectiva.com.br use capable, not suser, do * restore_flags on failure in * isicom_send_break, verify put_user * result * - * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps - * Baud index extended to 21 - * - * 20/03/03 ranjeeth Made to work for Linux Advanced server. - * Taken care of license warning. - * - * 10/12/03 Ravindra Made to work for Fedora Core 1 of + * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps + * Baud index extended to 21 + * + * 20/03/03 ranjeeth Made to work for Linux Advanced server. + * Taken care of license warning. + * + * 10/12/03 Ravindra Made to work for Fedora Core 1 of * Red Hat Distribution * * 06/01/05 Alan Cox Merged the ISI and base kernel strands @@ -93,10 +93,10 @@ * * *********************************************************** * - * To use this driver you also need the support package. You + * 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/ * @@ -161,16 +161,15 @@ static unsigned long tx_count = 0; 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 void isicom_start(struct tty_struct *tty); -static unsigned char * tmp_buf; +static unsigned char *tmp_buf; 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 + -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19 }; struct isi_board { @@ -216,7 +215,7 @@ static struct isi_port isi_ports[PORT_COUNT]; * the kernel lock for the card and have the card in a position that * it wants to talk. */ - + static int lock_card(struct isi_board *card) { char retries; @@ -225,7 +224,7 @@ static int lock_card(struct isi_board *card) for (retries = 0; retries < 100; retries++) { spin_lock_irqsave(&card->card_lock, card->flags); if (inw(base + 0xe) & 0x1) { - return 1; + return 1; } else { spin_unlock_irqrestore(&card->card_lock, card->flags); udelay(1000); /* 1ms */ @@ -244,7 +243,7 @@ static int lock_card_at_interrupt(struct isi_board *card) spin_lock_irqsave(&card->card_lock, card->flags); if (inw(base + 0xe) & 0x1) - return 1; + return 1; else spin_unlock_irqrestore(&card->card_lock, card->flags); } @@ -260,119 +259,119 @@ static void unlock_card(struct isi_board *card) /* * ISI Card specific ops ... */ - -static void raise_dtr(struct isi_port * port) + +static void raise_dtr(struct isi_port *port) { - struct isi_board * card = port->card; + struct isi_board *card = port->card; unsigned short base = card->base; unsigned char channel = port->channel; if (!lock_card(card)) return; - outw(0x8000 | (channel << card->shift_count) | 0x02 , base); + outw(0x8000 | (channel << card->shift_count) | 0x02, base); outw(0x0504, base); InterruptTheCard(base); port->status |= ISI_DTR; unlock_card(card); } -static inline void drop_dtr(struct isi_port * port) -{ - struct isi_board * card = port->card; +static inline void drop_dtr(struct isi_port *port) +{ + struct isi_board *card = port->card; unsigned short base = card->base; unsigned char channel = port->channel; if (!lock_card(card)) return; - outw(0x8000 | (channel << card->shift_count) | 0x02 , base); + outw(0x8000 | (channel << card->shift_count) | 0x02, base); outw(0x0404, base); - InterruptTheCard(base); + InterruptTheCard(base); port->status &= ~ISI_DTR; unlock_card(card); } -static inline void raise_rts(struct isi_port * port) +static inline void raise_rts(struct isi_port *port) { - struct isi_board * card = port->card; + struct isi_board *card = port->card; unsigned short base = card->base; unsigned char channel = port->channel; if (!lock_card(card)) return; - outw(0x8000 | (channel << card->shift_count) | 0x02 , base); + outw(0x8000 | (channel << card->shift_count) | 0x02, base); outw(0x0a04, base); - InterruptTheCard(base); + InterruptTheCard(base); port->status |= ISI_RTS; unlock_card(card); } -static inline void drop_rts(struct isi_port * port) +static inline void drop_rts(struct isi_port *port) { - struct isi_board * card = port->card; + struct isi_board *card = port->card; unsigned short base = card->base; unsigned char channel = port->channel; if (!lock_card(card)) return; - outw(0x8000 | (channel << card->shift_count) | 0x02 , base); + outw(0x8000 | (channel << card->shift_count) | 0x02, base); outw(0x0804, base); - InterruptTheCard(base); + InterruptTheCard(base); port->status &= ~ISI_RTS; unlock_card(card); } -static inline void raise_dtr_rts(struct isi_port * port) +static inline void raise_dtr_rts(struct isi_port *port) { - struct isi_board * card = port->card; + struct isi_board *card = port->card; unsigned short base = card->base; unsigned char channel = port->channel; if (!lock_card(card)) return; - outw(0x8000 | (channel << card->shift_count) | 0x02 , base); + outw(0x8000 | (channel << card->shift_count) | 0x02, base); outw(0x0f04, base); InterruptTheCard(base); port->status |= (ISI_DTR | ISI_RTS); unlock_card(card); } -static void drop_dtr_rts(struct isi_port * port) +static void drop_dtr_rts(struct isi_port *port) { - struct isi_board * card = port->card; + struct isi_board *card = port->card; unsigned short base = card->base; unsigned char channel = port->channel; if (!lock_card(card)) return; - outw(0x8000 | (channel << card->shift_count) | 0x02 , base); + outw(0x8000 | (channel << card->shift_count) | 0x02, base); outw(0x0c04, base); - InterruptTheCard(base); + InterruptTheCard(base); port->status &= ~(ISI_RTS | ISI_DTR); unlock_card(card); } -static inline void kill_queue(struct isi_port * port, short queue) +static inline void kill_queue(struct isi_port *port, short queue) { - struct isi_board * card = port->card; + struct isi_board *card = port->card; unsigned short base = card->base; unsigned char channel = port->channel; if (!lock_card(card)) return; - outw(0x8000 | (channel << card->shift_count) | 0x02 , base); + outw(0x8000 | (channel << card->shift_count) | 0x02, base); outw((queue << 8) | 0x06, base); - InterruptTheCard(base); + InterruptTheCard(base); unlock_card(card); } -/* +/* * Firmware loader driver specific routines. This needs to mostly die * and be replaced with request_firmware. */ @@ -386,19 +385,19 @@ static struct miscdevice isiloader_device = { ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops }; - + static inline int WaitTillCardIsFree(unsigned short base) { unsigned long count=0; while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000)); - if (inw(base+0xe)&0x1) + 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 cmd, unsigned long arg) { unsigned int card, i, j, signature, status, portcount = 0; unsigned long t; @@ -406,213 +405,211 @@ static int ISILoad_ioctl(struct inode *inode, struct file *filp, bin_frame frame; void __user *argp = (void __user *)arg; /* exec_record exec_rec; */ - - if(get_user(card, (int __user *)argp)) + + if (get_user(card, (int __user *)argp)) return -EFAULT; - - if(card < 0 || card >= BOARD_COUNT) + + if (card < 0 || card >= BOARD_COUNT) return -ENXIO; - + base=isi_card[card].base; - - if(base==0) + + 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(t=jiffies+HZ/100;time_before(jiffies, t);); - - outw(0,base+0x8); /* Reset */ - - for(j=1;j<=3;j++) { - for(t=jiffies+HZ;time_before(jiffies, t);); - 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))) { + 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 (t=jiffies+HZ/100;time_before(jiffies, t);); + + outw(0,base+0x8); /* Reset */ + + for (j=1;j<=3;j++) { + for (t=jiffies+HZ;time_before(jiffies, t);); + 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)); + 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%x\n",signature); -#endif - return -EIO; + 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; } - printk("-Done\n"); - return put_user(signature,(unsigned __user *)argp); - + } + 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%x\n",signature); +#endif + return -EIO; + } + printk("-Done\n"); + return put_user(signature,(unsigned __user *)argp); + case MIOCTL_LOAD_FIRMWARE: if (!capable(CAP_SYS_ADMIN)) return -EPERM; - - if(copy_from_user(&frame, argp, sizeof(bin_frame))) + + if (copy_from_user(&frame, argp, sizeof(bin_frame))) return -EFAULT; - + if (WaitTillCardIsFree(base)) return -EIO; - - outw(0xf0,base); /* start upload sequence */ + + outw(0xf0,base); /* start upload sequence */ outw(0x00,base); - outw((frame.addr), base);/* lsb of adderess */ - + 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)) + + 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", + 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)) + + 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%x\n",card+1, status); return -EIO; - } + } return 0; - + case MIOCTL_READ_FIRMWARE: if (!capable(CAP_SYS_ADMIN)) return -EPERM; - - if(copy_from_user(&frame, argp, sizeof(bin_header))) + + if (copy_from_user(&frame, argp, sizeof(bin_header))) return -EFAULT; - + if (WaitTillCardIsFree(base)) return -EIO; - - outw(0xf1,base); /* start download sequence */ + + outw(0xf1,base); /* start download sequence */ outw(0x00,base); - outw((frame.addr), base);/* lsb of adderess */ - + 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)) + + 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", + 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)) + + 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%x\n",card+1, status); return -EIO; - } - - if(copy_to_user(argp, &frame, sizeof(bin_frame))) + } + + if (copy_to_user(argp, &frame, sizeof(bin_frame))) return -EFAULT; return 0; - + case MIOCTL_XFER_CTRL: if (!capable(CAP_SYS_ADMIN)) return -EPERM; - if (WaitTillCardIsFree(base)) + 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 */ - + outw(0x0, base+0x4); /* for ISI4608 cards */ + isi_card[card].status |= FIRMWARE_LOADED; - return 0; - + return 0; + default: -#ifdef ISICOM_DEBUG - printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd); +#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, char *name, - const char * routine) + +static inline int isicom_paranoia_check(struct isi_port const *port, char *name, + const char *routine) { -#ifdef ISICOM_DEBUG - static const char * badmagic = +#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"; + static const char *badport = + KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n"; if (!port) { printk(badport, name, routine); return 1; @@ -620,13 +617,13 @@ static inline int isicom_paranoia_check(struct isi_port const * port, char *name if (port->magic != ISICOM_MAGIC) { printk(badmagic, name, routine); return 1; - } -#endif + } +#endif return 0; } - + /* - * Transmitter. + * Transmitter. * * We shovel data into the card buffers on a regular basis. The card * will do the rest of the work for us. @@ -636,25 +633,25 @@ static void isicom_tx(unsigned long _data) { short count = (BOARD_COUNT-1), card, base; short txcount, wrd, residue, word_count, cnt; - struct isi_port * port; - struct tty_struct * tty; - + struct isi_port *port; + struct tty_struct *tty; + #ifdef ISICOM_DEBUG ++tx_count; -#endif - +#endif + /* find next active board */ card = (prev_card + 1) & 0x0003; while(count-- > 0) { - if (isi_card[card].status & BOARD_ACTIVE) + if (isi_card[card].status & BOARD_ACTIVE) break; - card = (card + 1) & 0x0003; + 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; @@ -663,18 +660,18 @@ static void isicom_tx(unsigned long _data) continue; /* port not active or tx disabled to force flow control */ if (!(port->flags & ASYNC_INITIALIZED) || - !(port->status & ISI_TXOK)) + !(port->status & ISI_TXOK)) unlock_card(&isi_card[card]); continue; - + tty = port->tty; - - - if(tty == NULL) { + + + if (tty == NULL) { unlock_card(&isi_card[card]); continue; } - + txcount = min_t(short, TX_SIZE, port->xmit_cnt); if (txcount <= 0 || tty->stopped || tty->hw_stopped) { unlock_card(&isi_card[card]); @@ -682,16 +679,16 @@ static void isicom_tx(unsigned long _data) } if (!(inw(base + 0x02) & (1 << port->channel))) { unlock_card(&isi_card[card]); - continue; + continue; } #ifdef ISICOM_DEBUG - printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n", - txcount, port->channel+1); -#endif + 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; + wrd = 0; while (1) { cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE - port->xmit_tail)); if (residue == YES) { @@ -702,13 +699,13 @@ static void isicom_tx(unsigned long _data) port->xmit_cnt--; txcount--; cnt--; - outw(wrd, base); + 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); @@ -731,68 +728,68 @@ static void isicom_tx(unsigned long _data) if (port->xmit_cnt <= WAKEUP_CHARS) schedule_work(&port->bh_tqueue); unlock_card(&isi_card[card]); - } + } - /* schedule another tx for hopefully in about 10ms */ -sched_again: - if (!re_schedule) + /* 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; -} - + + return; +} + /* Interrupt handlers */ - -static void isicom_bottomhalf(void * data) + +static void isicom_bottomhalf(void *data) { - struct isi_port * port = (struct isi_port *) data; - struct tty_struct * tty = port->tty; - + struct isi_port *port = (struct isi_port *) data; + struct tty_struct *tty = port->tty; + if (!tty) return; - tty_wakeup(tty); + tty_wakeup(tty); wake_up_interruptible(&tty->write_wait); -} - +} + /* - * Main interrupt handler routine + * Main interrupt handler routine */ - + static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs) { - struct isi_board * card; - struct isi_port * port; - struct tty_struct * tty; + 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; unsigned char *rp; - + card = (struct isi_board *) dev_id; if (!card || !(card->status & FIRMWARE_LOADED)) return IRQ_NONE; - + base = card->base; spin_lock(&card->card_lock); - + if (card->isa == NO) { /* - * disable any interrupts from the PCI card and lower the - * interrupt line + * 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; @@ -804,9 +801,9 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, if (card->isa) ClearInterrupt(base); else - outw(0x0000, base+0x04); /* enable interrupts */ + outw(0x0000, base+0x04); /* enable interrupts */ spin_unlock(&card->card_lock); - return IRQ_HANDLED; + return IRQ_HANDLED; } port = card->ports + channel; if (!(port->flags & ASYNC_INITIALIZED)) { @@ -815,8 +812,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, else outw(0x0000, base+0x04); /* enable interrupts */ return IRQ_HANDLED; - } - + } + tty = port->tty; if (tty == NULL) { word_count = byte_count >> 1; @@ -833,107 +830,107 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, spin_unlock(&card->card_lock); return IRQ_HANDLED; } - + 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; - schedule_work(&port->hangup_tq); - } - } - else { - if (header & ISI_DCD) { - /* Carrier has been detected */ + 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->high.\n"); -#endif - port->status |= ISI_DCD; - wake_up_interruptible(&port->open_wait); - } + printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n"); +#endif + port->status &= ~ISI_DCD; + schedule_work(&port->hangup_tq); } } else { - if (header & ISI_DCD) + if (header & ISI_DCD) { + /* Carrier has been detected */ +#ifdef ISICOM_DEBUG + printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n"); +#endif 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_work(&port->bh_tqueue); - } + wake_up_interruptible(&port->open_wait); } - else { - if (!(header & ISI_CTS)) { - port->tty->hw_stopped = 1; - /* stop tx ing */ - port->status &= ~(ISI_TXOK | ISI_CTS); - } + } + } + 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_work(&port->bh_tqueue); } } else { - if (header & ISI_CTS) - port->status |= ISI_CTS; - else - port->status &= ~ISI_CTS; + if (!(header & ISI_CTS)) { + port->tty->hw_stopped = 1; + /* stop tx ing */ + port->status &= ~(ISI_TXOK | ISI_CTS); + } } - - if (header & ISI_DSR) - port->status |= ISI_DSR; - else - port->status &= ~ISI_DSR; - - if (header & ISI_RI) - port->status |= ISI_RI; + } + else { + if (header & ISI_CTS) + port->status |= ISI_CTS; else - port->status &= ~ISI_RI; - - break; - - case 1: /* Received Break !!! */ - tty_insert_flip_char(tty, 0, TTY_BREAK); - if (port->flags & ASYNC_SAK) - do_SAK(tty); - tty_flip_buffer_push(tty); - 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; - } + 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 !!! */ + tty_insert_flip_char(tty, 0, TTY_BREAK); + if (port->flags & ASYNC_SAK) + do_SAK(tty); + tty_flip_buffer_push(tty); + 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 = tty_prepare_flip_string(tty, &rp, byte_count & ~1); #ifdef ISICOM_DEBUG - printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n", + printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n", count, byte_count); -#endif +#endif word_count = count >> 1; insw(base, rp, word_count); byte_count -= (word_count << 1); if (count & 0x0001) { tty_insert_flip_char(tty, inw(base) & 0xff, TTY_NORMAL); byte_count -= 2; - } + } if (byte_count > 0) { printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n", base, channel+1); @@ -947,102 +944,102 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, if (card->isa == YES) ClearInterrupt(base); else - outw(0x0000, base+0x04); /* enable interrupts */ + outw(0x0000, base+0x04); /* enable interrupts */ return IRQ_HANDLED; -} +} -static void isicom_config_port(struct isi_port * port) +static void isicom_config_port(struct isi_port *port) { - struct isi_board * card = port->card; - struct tty_struct * tty; + struct isi_board *card = port->card; + struct tty_struct *tty; unsigned long baud; unsigned short channel_setup, 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 + + /* 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 */ + baud++; /* 57.6 Kbps */ if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - baud +=2; /* 115 Kbps */ + baud +=2; /* 115 Kbps */ } if (linuxb_to_isib[baud] == -1) { /* hang up */ - drop_dtr(port); - return; - } - else + drop_dtr(port); + return; + } + else raise_dtr(port); - + if (lock_card(card)) { 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; + 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; + channel_setup |= ISICOM_ODPAR; } - outw(channel_setup, base); + outw(channel_setup, base); InterruptTheCard(base); - unlock_card(card); - } + unlock_card(card); + } if (C_CLOCAL(tty)) port->flags &= ~ASYNC_CHECK_CD; else - port->flags |= ASYNC_CHECK_CD; - + 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)) + } + if (I_IXON(tty)) flow_ctrl |= ISICOM_RESPOND_XONXOFF; if (I_IXOFF(tty)) - flow_ctrl |= ISICOM_INITIATE_XONXOFF; - + flow_ctrl |= ISICOM_INITIATE_XONXOFF; + if (lock_card(card)) { outw(0x8000 | (channel << shift_count) |0x04, base); outw(flow_ctrl << 8 | 0x05, base); @@ -1050,22 +1047,22 @@ static void isicom_config_port(struct isi_port * port) InterruptTheCard(base); unlock_card(card); } - + /* 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 */ -static inline void isicom_setup_board(struct isi_board * bp) +/* open et all */ + +static inline void isicom_setup_board(struct isi_board *bp) { int channel; - struct isi_port * port; + struct isi_port *port; unsigned long flags; - + spin_lock_irqsave(&bp->card_lock, flags); if (bp->status & BOARD_ACTIVE) { spin_unlock_irqrestore(&bp->card_lock, flags); @@ -1074,53 +1071,53 @@ static inline void isicom_setup_board(struct isi_board * bp) port = bp->ports; bp->status |= BOARD_ACTIVE; spin_unlock_irqrestore(&bp->card_lock, flags); - for(channel = 0; channel < bp->port_count; channel++, port++) + for (channel = 0; channel < bp->port_count; channel++, port++) drop_dtr_rts(port); return; } - -static int isicom_setup_port(struct isi_port * port) + +static int isicom_setup_port(struct isi_port *port) { - struct isi_board * card = port->card; + 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_zeroed_page(GFP_KERNEL))) return -ENOMEM; - + if (port->xmit_buf) { free_page(page); return -ERESTARTSYS; } - port->xmit_buf = (unsigned char *) page; - } + port->xmit_buf = (unsigned char *) page; + } spin_lock_irqsave(&card->card_lock, flags); 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; spin_unlock_irqrestore(&card->card_lock, flags); - - return 0; -} - -static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port) + + return 0; +} + +static int block_til_ready(struct tty_struct *tty, struct file *filp, struct isi_port *port) { - struct isi_board * card = port->card; + struct isi_board *card = port->card; int do_clocal = 0, retval; unsigned long flags; DECLARE_WAITQUEUE(wait, current); @@ -1128,30 +1125,30 @@ static int block_til_ready(struct tty_struct * tty, struct file * filp, struct i /* block if port is in the process of being closed */ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { -#ifdef ISICOM_DEBUG +#ifdef ISICOM_DEBUG printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n"); -#endif +#endif interruptible_sleep_on(&port->close_wait); if (port->flags & ASYNC_HUP_NOTIFY) return -EAGAIN; else return -ERESTARTSYS; } - + /* if non-blocking mode is set ... */ - + if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { -#ifdef ISICOM_DEBUG +#ifdef ISICOM_DEBUG printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n"); -#endif +#endif port->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - + return 0; + } + if (C_CLOCAL(tty)) do_clocal = 1; - - /* block waiting for DCD to be asserted, and while + + /* block waiting for DCD to be asserted, and while callout dev is busy */ retval = 0; add_wait_queue(&port->open_wait, &wait); @@ -1161,27 +1158,27 @@ static int block_til_ready(struct tty_struct * tty, struct file * filp, struct i port->count--; port->blocked_open++; spin_unlock_irqrestore(&card->card_lock, flags); - + while (1) { raise_dtr_rts(port); set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { + if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { if (port->flags & ASYNC_HUP_NOTIFY) retval = -EAGAIN; else retval = -ERESTARTSYS; break; - } + } if (!(port->flags & ASYNC_CLOSING) && - (do_clocal || (port->status & ISI_DCD))) { + (do_clocal || (port->status & ISI_DCD))) { break; - } + } if (signal_pending(current)) { retval = -ERESTARTSYS; break; } - schedule(); + schedule(); } set_current_state(TASK_RUNNING); remove_wait_queue(&port->open_wait, &wait); @@ -1195,11 +1192,11 @@ static int block_til_ready(struct tty_struct * tty, struct file * filp, struct i port->flags |= ASYNC_NORMAL_ACTIVE; return 0; } - -static int isicom_open(struct tty_struct * tty, struct file * filp) + +static int isicom_open(struct tty_struct *tty, struct file *filp) { - struct isi_port * port; - struct isi_board * card; + struct isi_port *port; + struct isi_board *card; unsigned int line, board; int error; @@ -1208,20 +1205,20 @@ static int isicom_open(struct tty_struct * tty, struct file * filp) return -ENODEV; board = BOARD(line); card = &isi_card[board]; - + if (!(card->status & FIRMWARE_LOADED)) return -ENODEV; - + /* open on a port greater than the port count for the card !!! */ if (line > ((board * 16) + card->port_count - 1)) return -ENODEV; - port = &isi_ports[line]; + port = &isi_ports[line]; if (isicom_paranoia_check(port, tty->name, "isicom_open")) return -ENODEV; - - isicom_setup_board(card); - + + isicom_setup_board(card); + port->count++; tty->driver_data = port; port->tty = tty; @@ -1230,12 +1227,12 @@ static int isicom_open(struct tty_struct * tty, struct file * filp) if ((error = block_til_ready(tty, filp, port))!=0) return error; - return 0; + return 0; } - + /* close et all */ -static inline void isicom_shutdown_board(struct isi_board * bp) +static inline void isicom_shutdown_board(struct isi_board *bp) { unsigned long flags; @@ -1246,15 +1243,15 @@ static inline void isicom_shutdown_board(struct isi_board * bp) spin_unlock_irqrestore(&bp->card_lock, flags); } -static void isicom_shutdown_port(struct isi_port * port) +static void isicom_shutdown_port(struct isi_port *port) { - struct isi_board * card = port->card; - struct tty_struct * tty; + struct isi_board *card = port->card; + struct tty_struct *tty; unsigned long flags; - + tty = port->tty; - spin_lock_irqsave(&card->card_lock, flags); + spin_lock_irqsave(&card->card_lock, flags); if (!(port->flags & ASYNC_INITIALIZED)) { spin_unlock_irqrestore(&card->card_lock, flags); return; @@ -1262,60 +1259,60 @@ static void isicom_shutdown_port(struct isi_port * port) if (port->xmit_buf) { free_page((unsigned long) port->xmit_buf); port->xmit_buf = NULL; - } + } port->flags &= ~ASYNC_INITIALIZED; /* 3rd October 2000 : Vinayak P Risbud */ port->tty = NULL; spin_unlock_irqrestore(&card->card_lock, flags); - + /*Fix done by Anil .S on 30-04-2001 remote login through isi port has dtr toggle problem due to which the carrier drops before the password prompt - appears on the remote end. Now we drop the dtr only if the + appears on the remote end. Now we drop the dtr only if the HUPCL(Hangup on close) flag is set for the tty*/ - - if (C_HUPCL(tty)) + + if (C_HUPCL(tty)) /* drop dtr on this port */ drop_dtr(port); - - /* any other port uninits */ + + /* any other port uninits */ if (tty) set_bit(TTY_IO_ERROR, &tty->flags); - + 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; + card->count = 0; } - + /* last port was closed , shutdown that boad too */ - if(C_HUPCL(tty)) { + if (C_HUPCL(tty)) { if (!card->count) isicom_shutdown_board(card); } } -static void isicom_close(struct tty_struct * tty, struct file * filp) +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; + 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->name, "isicom_close")) return; - -#ifdef ISICOM_DEBUG + +#ifdef ISICOM_DEBUG printk(KERN_DEBUG "ISICOM: Close start!!!.\n"); -#endif - +#endif + spin_lock_irqsave(&card->card_lock, flags); if (tty_hung_up_p(filp)) { spin_unlock_irqrestore(&card->card_lock, 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", @@ -1324,31 +1321,31 @@ static void isicom_close(struct tty_struct * tty, struct file * filp) } if (--port->count < 0) { printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for" - "channel%d = %d", card->base, port->channel, + "channel%d = %d", card->base, port->channel, port->count); - port->count = 0; + port->count = 0; } - + if (port->count) { spin_unlock_irqrestore(&card->card_lock, flags); return; - } + } port->flags |= ASYNC_CLOSING; tty->closing = 1; spin_unlock_irqrestore(&card->card_lock, flags); - + 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 + /* indicate to the card that no more data can be received on this port */ spin_lock_irqsave(&card->card_lock, flags); - if (port->flags & ASYNC_INITIALIZED) { + if (port->flags & ASYNC_INITIALIZED) { card->port_status &= ~(1 << port->channel); outw(card->port_status, card->base + 0x02); - } + } isicom_shutdown_port(port); spin_unlock_irqrestore(&card->card_lock, flags); - + if (tty->driver->flush_buffer) tty->driver->flush_buffer(tty); tty_ldisc_flush(tty); @@ -1359,65 +1356,65 @@ static void isicom_close(struct tty_struct * tty, struct file * filp) if (port->blocked_open) { spin_unlock_irqrestore(&card->card_lock, flags); if (port->close_delay) { -#ifdef ISICOM_DEBUG +#ifdef ISICOM_DEBUG printk(KERN_DEBUG "ISICOM: scheduling until time out.\n"); -#endif +#endif msleep_interruptible(jiffies_to_msecs(port->close_delay)); } spin_lock_irqsave(&card->card_lock, flags); wake_up_interruptible(&port->open_wait); - } + } port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); wake_up_interruptible(&port->close_wait); spin_unlock_irqrestore(&card->card_lock, flags); } /* write et all */ -static int isicom_write(struct tty_struct * tty, - const unsigned char * buf, int count) +static int isicom_write(struct tty_struct *tty, const unsigned char *buf, + int count) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - struct isi_board * card = port->card; + struct isi_port *port = (struct isi_port *) tty->driver_data; + struct isi_board *card = port->card; unsigned long flags; int cnt, total = 0; if (isicom_paranoia_check(port, tty->name, "isicom_write")) return 0; - + if (!tty || !port->xmit_buf || !tmp_buf) return 0; - + spin_lock_irqsave(&card->card_lock, flags); - - while(1) { + + while(1) { cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, - SERIAL_XMIT_SIZE - port->xmit_head)); - if (cnt <= 0) + SERIAL_XMIT_SIZE - port->xmit_head)); + if (cnt <= 0) break; - + memcpy(port->xmit_buf + port->xmit_head, buf, cnt); port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1); port->xmit_cnt += cnt; buf += cnt; count -= cnt; total += cnt; - } + } if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) port->status |= ISI_TXOK; spin_unlock_irqrestore(&card->card_lock, flags); - return total; + return total; } /* put_char et all */ -static void isicom_put_char(struct tty_struct * tty, unsigned char ch) +static void isicom_put_char(struct tty_struct *tty, unsigned char ch) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - struct isi_board * card = port->card; + 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->name, "isicom_put_char")) return; - + if (!tty || !port->xmit_buf) return; @@ -1426,7 +1423,7 @@ static void isicom_put_char(struct tty_struct * tty, unsigned char ch) spin_unlock_irqrestore(&card->card_lock, flags); return; } - + port->xmit_buf[port->xmit_head++] = ch; port->xmit_head &= (SERIAL_XMIT_SIZE - 1); port->xmit_cnt++; @@ -1434,30 +1431,30 @@ static void isicom_put_char(struct tty_struct * tty, unsigned char ch) } /* flush_chars et all */ -static void isicom_flush_chars(struct tty_struct * tty) +static void isicom_flush_chars(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - + struct isi_port *port = (struct isi_port *) tty->driver_data; + if (isicom_paranoia_check(port, tty->name, "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; + port->status |= ISI_TXOK; } /* write_room et all */ -static int isicom_write_room(struct tty_struct * tty) +static int isicom_write_room(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; + struct isi_port *port = (struct isi_port *) tty->driver_data; int free; if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) return 0; - + free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; if (free < 0) free = 0; @@ -1465,23 +1462,23 @@ static int isicom_write_room(struct tty_struct * tty) } /* chars_in_buffer et all */ -static int isicom_chars_in_buffer(struct tty_struct * tty) +static int isicom_chars_in_buffer(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; + struct isi_port *port = (struct isi_port *) tty->driver_data; if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) return 0; return port->xmit_cnt; } /* ioctl et all */ -static inline void isicom_send_break(struct isi_port * port, unsigned long length) +static inline void isicom_send_break(struct isi_port *port, unsigned long length) { - struct isi_board * card = port->card; - unsigned short base = card->base; - - if(!lock_card(card)) + struct isi_board *card = port->card; + unsigned short base = card->base; + + if (!lock_card(card)) return; - + outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); outw((length & 0xff) << 8 | 0x00, base); outw((length & 0xff00), base); @@ -1492,13 +1489,13 @@ static inline void isicom_send_break(struct isi_port * port, unsigned long lengt static int isicom_tiocmget(struct tty_struct *tty, struct file *file) { - struct isi_port * port = (struct isi_port *) tty->driver_data; + struct isi_port *port = (struct isi_port *) tty->driver_data; /* just send the port status */ unsigned short status = port->status; if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) return -ENODEV; - + return ((status & ISI_RTS) ? TIOCM_RTS : 0) | ((status & ISI_DTR) ? TIOCM_DTR : 0) | ((status & ISI_DCD) ? TIOCM_CAR : 0) | @@ -1508,13 +1505,13 @@ static int isicom_tiocmget(struct tty_struct *tty, struct file *file) } static int isicom_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) + unsigned int set, unsigned int clear) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - + struct isi_port *port = (struct isi_port *) tty->driver_data; + if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) return -ENODEV; - + if (set & TIOCM_RTS) raise_rts(port); if (set & TIOCM_DTR) @@ -1526,46 +1523,46 @@ static int isicom_tiocmset(struct tty_struct *tty, struct file *file, drop_dtr(port); return 0; -} +} -static int isicom_set_serial_info(struct isi_port * port, - struct serial_struct __user *info) +static int isicom_set_serial_info(struct isi_port *port, + struct serial_struct __user *info) { struct serial_struct newinfo; int reconfig_port; - if(copy_from_user(&newinfo, info, sizeof(newinfo))) + if (copy_from_user(&newinfo, info, sizeof(newinfo))) return -EFAULT; - - reconfig_port = ((port->flags & ASYNC_SPD_MASK) != - (newinfo.flags & ASYNC_SPD_MASK)); - + + 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))) + (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) | + port->closing_wait = newinfo.closing_wait; + port->flags = ((port->flags & ~ASYNC_FLAGS) | (newinfo.flags & ASYNC_FLAGS)); } if (reconfig_port) { isicom_config_port(port); } - return 0; -} + return 0; +} -static int isicom_get_serial_info(struct isi_port * port, - struct serial_struct __user *info) +static int isicom_get_serial_info(struct isi_port *port, + struct serial_struct __user *info) { struct serial_struct out_info; - + memset(&out_info, 0, sizeof(out_info)); /* out_info.type = ? */ out_info.line = port - isi_ports; @@ -1575,15 +1572,15 @@ static int isicom_get_serial_info(struct isi_port * port, /* 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))) + 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) +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; + struct isi_port *port = (struct isi_port *) tty->driver_data; void __user *argp = (void __user *)arg; int retval; @@ -1591,139 +1588,140 @@ static int isicom_ioctl(struct tty_struct * tty, struct file * filp, 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 __user *)argp); - - case TIOCSSOFTCAR: - if(get_user(arg, (unsigned long __user *) argp)) - return -EFAULT; - tty->termios->c_cflag = - ((tty->termios->c_cflag & ~CLOCAL) | - (arg ? CLOCAL : 0)); - return 0; - - case TIOCGSERIAL: - return isicom_get_serial_info(port, argp); - - case TIOCSSERIAL: - return isicom_set_serial_info(port, argp); - - default: - return -ENOIOCTLCMD; + 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 __user *)argp); + + case TIOCSSOFTCAR: + if (get_user(arg, (unsigned long __user *) argp)) + return -EFAULT; + tty->termios->c_cflag = + ((tty->termios->c_cflag & ~CLOCAL) | + (arg ? CLOCAL : 0)); + return 0; + + case TIOCGSERIAL: + return isicom_get_serial_info(port, argp); + + case TIOCSSERIAL: + return isicom_set_serial_info(port, argp); + + default: + return -ENOIOCTLCMD; } return 0; } /* set_termios et all */ -static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios) +static void isicom_set_termios(struct tty_struct *tty, + struct termios *old_termios) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - + struct isi_port *port = (struct isi_port *) tty->driver_data; + if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) return; - + if (tty->termios->c_cflag == old_termios->c_cflag && - tty->termios->c_iflag == old_termios->c_iflag) + tty->termios->c_iflag == old_termios->c_iflag) return; - + isicom_config_port(port); - + if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { + !(tty->termios->c_cflag & CRTSCTS)) { tty->hw_stopped = 0; - isicom_start(tty); - } + isicom_start(tty); + } } /* throttle et all */ -static void isicom_throttle(struct tty_struct * tty) +static void isicom_throttle(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - struct isi_board * card = port->card; - + struct isi_port *port = (struct isi_port *) tty->driver_data; + struct isi_board *card = port->card; + if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) return; - + /* tell the card that this port cannot handle any more data for now */ card->port_status &= ~(1 << port->channel); outw(card->port_status, card->base + 0x02); } /* unthrottle et all */ -static void isicom_unthrottle(struct tty_struct * tty) +static void isicom_unthrottle(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - struct isi_board * card = port->card; - + struct isi_port *port = (struct isi_port *) tty->driver_data; + struct isi_board *card = port->card; + if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) return; - + /* tell the card that this port is ready to accept more data */ card->port_status |= (1 << port->channel); outw(card->port_status, card->base + 0x02); } /* stop et all */ -static void isicom_stop(struct tty_struct * tty) +static void isicom_stop(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; + struct isi_port *port = (struct isi_port *) tty->driver_data; if (isicom_paranoia_check(port, tty->name, "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) +static void isicom_start(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - + struct isi_port *port = (struct isi_port *) tty->driver_data; + if (isicom_paranoia_check(port, tty->name, "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) +static void do_isicom_hangup(void *data) { - struct isi_port * port = (struct isi_port *) data; - struct tty_struct * tty; - + struct isi_port *port = (struct isi_port *) data; + struct tty_struct *tty; + tty = port->tty; if (tty) tty_hangup(tty); } -static void isicom_hangup(struct tty_struct * tty) +static void isicom_hangup(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - + struct isi_port *port = (struct isi_port *) tty->driver_data; + if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) return; - + isicom_shutdown_port(port); port->count = 0; port->flags &= ~ASYNC_NORMAL_ACTIVE; @@ -1732,19 +1730,19 @@ static void isicom_hangup(struct tty_struct * tty) } /* flush_buffer et all */ -static void isicom_flush_buffer(struct tty_struct * tty) +static void isicom_flush_buffer(struct tty_struct *tty) { - struct isi_port * port = (struct isi_port *) tty->driver_data; - struct isi_board * card = port->card; + 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->name, "isicom_flush_buffer")) return; - + spin_lock_irqsave(&card->card_lock, flags); port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; spin_unlock_irqrestore(&card->card_lock, flags); - + wake_up_interruptible(&tty->write_wait); tty_wakeup(tty); } @@ -1768,33 +1766,33 @@ static int __devinit register_ioregion(void) static void unregister_ioregion(void) { int count; - for (count=0; count < BOARD_COUNT; count++ ) + for (count=0; count < BOARD_COUNT; count++ ) if (isi_card[count].base) { release_region(isi_card[count].base,16); -#ifdef ISICOM_DEBUG +#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 +#endif } } static struct tty_operations isicom_ops = { - .open = isicom_open, - .close = isicom_close, - .write = isicom_write, - .put_char = isicom_put_char, - .flush_chars = isicom_flush_chars, - .write_room = isicom_write_room, + .open = isicom_open, + .close = isicom_close, + .write = isicom_write, + .put_char = isicom_put_char, + .flush_chars = isicom_flush_chars, + .write_room = isicom_write_room, .chars_in_buffer = isicom_chars_in_buffer, - .ioctl = isicom_ioctl, - .set_termios = isicom_set_termios, - .throttle = isicom_throttle, - .unthrottle = isicom_unthrottle, - .stop = isicom_stop, - .start = isicom_start, - .hangup = isicom_hangup, - .flush_buffer = isicom_flush_buffer, - .tiocmget = isicom_tiocmget, - .tiocmset = isicom_tiocmset, + .ioctl = isicom_ioctl, + .set_termios = isicom_set_termios, + .throttle = isicom_throttle, + .unthrottle = isicom_unthrottle, + .stop = isicom_stop, + .start = isicom_start, + .hangup = isicom_hangup, + .flush_buffer = isicom_flush_buffer, + .tiocmget = isicom_tiocmget, + .tiocmset = isicom_tiocmset, }; static int __devinit register_drivers(void) @@ -1814,11 +1812,11 @@ static int __devinit register_drivers(void) 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 = + isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |CLOCAL; isicom_normal->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(isicom_normal, &isicom_ops); - + if ((error=tty_register_driver(isicom_normal))!=0) { printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n", error); @@ -1843,13 +1841,13 @@ static int __devinit register_isr(void) for (count=0; count < BOARD_COUNT; count++ ) { if (isi_card[count].base) { - irqflags = (isi_card[count].isa == YES) ? - SA_INTERRUPT : + irqflags = (isi_card[count].isa == YES) ? + SA_INTERRUPT : (SA_INTERRUPT | SA_SHIRQ); - if (request_irq(isi_card[count].irq, - isicom_interrupt, - irqflags, + if (request_irq(isi_card[count].irq, + isicom_interrupt, + irqflags, ISICOM_NAME, &isi_card[count])) { printk(KERN_WARNING "ISICOM: Could not" @@ -1862,7 +1860,7 @@ static int __devinit register_isr(void) } else done++; - } + } } return done; } @@ -1880,42 +1878,42 @@ static void __exit unregister_isr(void) static int __devinit isicom_init(void) { int card, channel, base; - struct isi_port * port; + struct isi_port *port; unsigned long page; - - if (!tmp_buf) { + + if (!tmp_buf) { page = get_zeroed_page(GFP_KERNEL); - if (!page) { -#ifdef ISICOM_DEBUG - printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n"); + 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; +#endif + return 0; + } + tmp_buf = (unsigned char *) page; } - - if (!register_ioregion()) + + 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()) + if (register_drivers()) { unregister_ioregion(); free_page((unsigned long)tmp_buf); return 0; } - if (!register_isr()) + if (!register_isr()) { unregister_drivers(); /* ioports already uregistered in register_isr */ free_page((unsigned long)tmp_buf); - return 0; + return 0; } - + memset(isi_ports, 0, sizeof(isi_ports)); for (card = 0; card < BOARD_COUNT; card++) { port = &isi_ports[card * 16]; @@ -1926,24 +1924,24 @@ static int __devinit isicom_init(void) port->magic = ISICOM_MAGIC; port->card = &isi_card[card]; port->channel = channel; - port->close_delay = 50 * HZ/100; - port->closing_wait = 3000 * HZ/100; - INIT_WORK(&port->hangup_tq, do_isicom_hangup, port); - INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port); - port->status = 0; - init_waitqueue_head(&port->open_wait); + port->close_delay = 50 * HZ/100; + port->closing_wait = 3000 * HZ/100; + INIT_WORK(&port->hangup_tq, do_isicom_hangup, port); + INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port); + port->status = 0; + init_waitqueue_head(&port->open_wait); init_waitqueue_head(&port->close_wait); /* . . . */ - } - } - - return 1; + } + } + + return 1; } /* * Insmod can set static symbols so keep these static */ - + static int io[4]; static int irq[4]; @@ -1961,9 +1959,9 @@ static int __devinit isicom_setup(void) int retval, card, idx, count; unsigned char pciirq; unsigned int ioaddr; - + card = 0; - for(idx=0; idx < BOARD_COUNT; idx++) { + for (idx=0; idx < BOARD_COUNT; idx++) { if (io[idx]) { isi_card[idx].base=io[idx]; isi_card[idx].irq=irq[idx]; @@ -1975,23 +1973,23 @@ static int __devinit isicom_setup(void) 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))) { - + (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 (card < BOARD_COUNT) { for (idx=0; idx < DEVID_COUNT; idx++) { dev = NULL; @@ -2000,21 +1998,22 @@ static int __devinit isicom_setup(void) 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. - */ + 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++) { + */ + for (count=0; count < BOARD_COUNT; count++) { if (isi_card[count].base == 0) { isi_card[count].base = ioaddr; isi_card[count].irq = pciirq; @@ -2023,35 +2022,35 @@ static int __devinit isicom_setup(void) 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"); + 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 retval; } - + if (!isicom_init()) { - if (misc_deregister(&isiloader_device)) + if (misc_deregister(&isiloader_device)) printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); return -EIO; } - + init_timer(&tx); tx.expires = jiffies + 1; tx.data = 0; tx.function = isicom_tx; re_schedule = 1; add_timer(&tx); - + return 0; } @@ -2062,8 +2061,8 @@ static void __exit isicom_exit(void) msleep(1000); unregister_isr(); unregister_drivers(); - unregister_ioregion(); - if(tmp_buf) + unregister_ioregion(); + if (tmp_buf) free_page((unsigned long)tmp_buf); if (misc_deregister(&isiloader_device)) printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); |