X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fchar%2Fepca.c;h=4998b2761e8f6e891b1595a686f1e29f948e9fcc;hb=216ba023a96c04e8d3aabf83d5931c35b6e2dbbb;hp=60a4df7dac12ed9e073c29c991e97178d42c7e1b;hpb=a815752ac0ffdb910e92958d41d28f4fb28e5296;p=linux-2.6-omap-h63xx.git diff --git a/drivers/char/epca.c b/drivers/char/epca.c index 60a4df7dac1..4998b2761e8 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -184,9 +184,8 @@ static void pc_stop(struct tty_struct *); static void pc_start(struct tty_struct *); static void pc_throttle(struct tty_struct *tty); static void pc_unthrottle(struct tty_struct *tty); -static void digi_send_break(struct channel *ch, int msec); +static int pc_send_break(struct tty_struct *tty, int msec); static void setup_empty_event(struct tty_struct *tty, struct channel *ch); -static void epca_setup(char *, int *); static int pc_write(struct tty_struct *, const unsigned char *, int); static int pc_init(void); @@ -432,7 +431,7 @@ static void pc_close(struct tty_struct *tty, struct file *filp) spin_unlock_irqrestore(&epca_lock, flags); return; } - if (ch->count-- > 1) { + if (ch->port.count-- > 1) { /* Begin channel is open more than once */ /* * Return without doing anything. Someone might still @@ -442,19 +441,19 @@ static void pc_close(struct tty_struct *tty, struct file *filp) return; } /* Port open only once go ahead with shutdown & reset */ - BUG_ON(ch->count < 0); + BUG_ON(ch->port.count < 0); /* * Let the rest of the driver know the channel is being closed. * This becomes important if an open is attempted before close * is finished. */ - ch->asyncflags |= ASYNC_CLOSING; + ch->port.flags |= ASYNC_CLOSING; tty->closing = 1; spin_unlock_irqrestore(&epca_lock, flags); - if (ch->asyncflags & ASYNC_INITIALIZED) { + if (ch->port.flags & ASYNC_INITIALIZED) { /* Setup an event to indicate when the transmit buffer empties */ setup_empty_event(tty, ch); @@ -469,17 +468,17 @@ static void pc_close(struct tty_struct *tty, struct file *filp) spin_lock_irqsave(&epca_lock, flags); tty->closing = 0; ch->event = 0; - ch->tty = NULL; + ch->port.tty = NULL; spin_unlock_irqrestore(&epca_lock, flags); - if (ch->blocked_open) { + if (ch->port.blocked_open) { if (ch->close_delay) msleep_interruptible(jiffies_to_msecs(ch->close_delay)); - wake_up_interruptible(&ch->open_wait); + wake_up_interruptible(&ch->port.open_wait); } - ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED | + ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED | ASYNC_CLOSING); - wake_up_interruptible(&ch->close_wait); + wake_up_interruptible(&ch->port.close_wait); } } @@ -489,7 +488,7 @@ static void shutdown(struct channel *ch) struct tty_struct *tty; struct board_chan __iomem *bc; - if (!(ch->asyncflags & ASYNC_INITIALIZED)) + if (!(ch->port.flags & ASYNC_INITIALIZED)) return; spin_lock_irqsave(&epca_lock, flags); @@ -504,7 +503,7 @@ static void shutdown(struct channel *ch) */ if (bc) writeb(0, &bc->idata); - tty = ch->tty; + tty = ch->port.tty; /* If we're a modem control device and HUPCL is on, drop RTS & DTR. */ if (tty->termios->c_cflag & HUPCL) { @@ -518,7 +517,7 @@ static void shutdown(struct channel *ch) * will have to reinitialized. Set a flag to indicate this. */ /* Prevent future Digi programmed interrupts from coming active */ - ch->asyncflags &= ~ASYNC_INITIALIZED; + ch->port.flags &= ~ASYNC_INITIALIZED; spin_unlock_irqrestore(&epca_lock, flags); } @@ -538,12 +537,12 @@ static void pc_hangup(struct tty_struct *tty) shutdown(ch); spin_lock_irqsave(&epca_lock, flags); - ch->tty = NULL; + ch->port.tty = NULL; ch->event = 0; - ch->count = 0; - ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED); + ch->port.count = 0; + ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED); spin_unlock_irqrestore(&epca_lock, flags); - wake_up_interruptible(&ch->open_wait); + wake_up_interruptible(&ch->port.open_wait); } } @@ -795,7 +794,7 @@ static int block_til_ready(struct tty_struct *tty, unsigned long flags; if (tty_hung_up_p(filp)) { - if (ch->asyncflags & ASYNC_HUP_NOTIFY) + if (ch->port.flags & ASYNC_HUP_NOTIFY) retval = -EAGAIN; else retval = -ERESTARTSYS; @@ -806,10 +805,10 @@ static int block_til_ready(struct tty_struct *tty, * If the device is in the middle of being closed, then block until * it's done, and then try again. */ - if (ch->asyncflags & ASYNC_CLOSING) { - interruptible_sleep_on(&ch->close_wait); + if (ch->port.flags & ASYNC_CLOSING) { + interruptible_sleep_on(&ch->port.close_wait); - if (ch->asyncflags & ASYNC_HUP_NOTIFY) + if (ch->port.flags & ASYNC_HUP_NOTIFY) return -EAGAIN; else return -ERESTARTSYS; @@ -820,7 +819,7 @@ static int block_til_ready(struct tty_struct *tty, * If non-blocking mode is set, then make the check up front * and then exit. */ - ch->asyncflags |= ASYNC_NORMAL_ACTIVE; + ch->port.flags |= ASYNC_NORMAL_ACTIVE; return 0; } if (tty->termios->c_cflag & CLOCAL) @@ -828,24 +827,24 @@ static int block_til_ready(struct tty_struct *tty, /* Block waiting for the carrier detect and the line to become free */ retval = 0; - add_wait_queue(&ch->open_wait, &wait); + add_wait_queue(&ch->port.open_wait, &wait); spin_lock_irqsave(&epca_lock, flags); /* We dec count so that pc_close will know when to free things */ if (!tty_hung_up_p(filp)) - ch->count--; - ch->blocked_open++; + ch->port.count--; + ch->port.blocked_open++; while (1) { set_current_state(TASK_INTERRUPTIBLE); if (tty_hung_up_p(filp) || - !(ch->asyncflags & ASYNC_INITIALIZED)) { - if (ch->asyncflags & ASYNC_HUP_NOTIFY) + !(ch->port.flags & ASYNC_INITIALIZED)) { + if (ch->port.flags & ASYNC_HUP_NOTIFY) retval = -EAGAIN; else retval = -ERESTARTSYS; break; } - if (!(ch->asyncflags & ASYNC_CLOSING) && + if (!(ch->port.flags & ASYNC_CLOSING) && (do_clocal || (ch->imodem & ch->dcd))) break; if (signal_pending(current)) { @@ -864,17 +863,17 @@ static int block_til_ready(struct tty_struct *tty, } __set_current_state(TASK_RUNNING); - remove_wait_queue(&ch->open_wait, &wait); + remove_wait_queue(&ch->port.open_wait, &wait); if (!tty_hung_up_p(filp)) - ch->count++; - ch->blocked_open--; + ch->port.count++; + ch->port.blocked_open--; spin_unlock_irqrestore(&epca_lock, flags); if (retval) return retval; - ch->asyncflags |= ASYNC_NORMAL_ACTIVE; + ch->port.flags |= ASYNC_NORMAL_ACTIVE; return 0; } @@ -933,7 +932,7 @@ static int pc_open(struct tty_struct *tty, struct file *filp) * necessary because we do not wish to flush and shutdown the channel * until the last app holding the channel open, closes it. */ - ch->count++; + ch->port.count++; /* * Set a kernel structures pointer to our local channel structure. This * way we can get to it when passed only a tty struct. @@ -957,14 +956,14 @@ static int pc_open(struct tty_struct *tty, struct file *filp) writew(head, &bc->rout); /* Set the channels associated tty structure */ - ch->tty = tty; + ch->port.tty = tty; /* * The below routine generally sets up parity, baud, flow control * issues, etc.... It effect both control flags and input flags. */ epcaparam(tty, ch); - ch->asyncflags |= ASYNC_INITIALIZED; + ch->port.flags |= ASYNC_INITIALIZED; memoff(ch); spin_unlock_irqrestore(&epca_lock, flags); @@ -976,7 +975,7 @@ static int pc_open(struct tty_struct *tty, struct file *filp) * waiting for the line... */ spin_lock_irqsave(&epca_lock, flags); - ch->tty = tty; + ch->port.tty = tty; globalwinon(ch); /* Enable Digi Data events */ writeb(1, &bc->idata); @@ -1017,8 +1016,8 @@ static void __exit epca_module_exit(void) } ch = card_ptr[crd]; for (count = 0; count < bd->numports; count++, ch++) { - if (ch && ch->tty) - tty_hangup(ch->tty); + if (ch && ch->port.tty) + tty_hangup(ch->port.tty); } } pci_unregister_driver(&epca_driver); @@ -1040,6 +1039,7 @@ static const struct tty_operations pc_ops = { .throttle = pc_throttle, .unthrottle = pc_unthrottle, .hangup = pc_hangup, + .break_ctl = pc_send_break }; static int info_open(struct tty_struct *tty, struct file *filp) @@ -1132,7 +1132,7 @@ static int __init pc_init(void) pc_driver->init_termios.c_lflag = 0; pc_driver->init_termios.c_ispeed = 9600; pc_driver->init_termios.c_ospeed = 9600; - pc_driver->flags = TTY_DRIVER_REAL_RAW; + pc_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; tty_set_operations(pc_driver, &pc_ops); pc_info->owner = THIS_MODULE; @@ -1376,6 +1376,7 @@ static void post_fep_init(unsigned int crd) unsigned long flags; u16 tseg, rseg; + tty_port_init(&ch->port); ch->brdchan = bc; ch->mailbox = gd; INIT_WORK(&ch->tqueue, do_softint); @@ -1427,7 +1428,7 @@ static void post_fep_init(unsigned int crd) ch->boardnum = crd; ch->channelnum = i; ch->magic = EPCA_MAGIC; - ch->tty = NULL; + ch->port.tty = NULL; if (shrinkmem) { fepcmd(ch, SETBUFFER, 32, 0, 0, 0); @@ -1510,10 +1511,6 @@ static void post_fep_init(unsigned int crd) ch->fepstopca = 0; ch->close_delay = 50; - ch->count = 0; - ch->blocked_open = 0; - init_waitqueue_head(&ch->open_wait); - init_waitqueue_head(&ch->close_wait); spin_unlock_irqrestore(&epca_lock, flags); } @@ -1633,15 +1630,15 @@ static void doevent(int crd) if (event & MODEMCHG_IND) { /* A modem signal change has been indicated */ ch->imodem = mstat; - if (ch->asyncflags & ASYNC_CHECK_CD) { + if (ch->port.flags & ASYNC_CHECK_CD) { /* We are now receiving dcd */ if (mstat & ch->dcd) - wake_up_interruptible(&ch->open_wait); + wake_up_interruptible(&ch->port.open_wait); else /* No dcd; hangup */ pc_sched_event(ch, EPCA_EVENT_HANGUP); } } - tty = ch->tty; + tty = ch->port.tty; if (tty) { if (event & BREAK_IND) { /* A break has been indicated */ @@ -1880,9 +1877,9 @@ static void epcaparam(struct tty_struct *tty, struct channel *ch) * that the driver will wait on carrier detect. */ if (ts->c_cflag & CLOCAL) - ch->asyncflags &= ~ASYNC_CHECK_CD; + ch->port.flags &= ~ASYNC_CHECK_CD; else - ch->asyncflags |= ASYNC_CHECK_CD; + ch->port.flags |= ASYNC_CHECK_CD; mval = ch->m_dtr | ch->m_rts; } /* End CBAUD not detected */ iflag = termios2digi_i(ch, ts->c_iflag); @@ -1972,7 +1969,7 @@ static void receive_data(struct channel *ch) globalwinon(ch); if (ch->statusflags & RXSTOPPED) return; - tty = ch->tty; + tty = ch->port.tty; if (tty) ts = tty->termios; bc = ch->brdchan; @@ -2032,7 +2029,7 @@ static void receive_data(struct channel *ch) globalwinon(ch); writew(tail, &bc->rout); /* Must be called with global data */ - tty_schedule_flip(ch->tty); + tty_schedule_flip(ch->port.tty); } static int info_ioctl(struct tty_struct *tty, struct file *file, @@ -2177,7 +2174,6 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { digiflow_t dflow; - int retval; unsigned long flags; unsigned int mflag, mstat; unsigned char startc, stopc; @@ -2189,37 +2185,7 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file, bc = ch->brdchan; else return -EINVAL; - /* - * For POSIX compliance we need to add more ioctls. See tty_ioctl.c in - * /usr/src/linux/drivers/char for a good example. In particular think - * about adding TCSETAF, TCSETAW, TCSETA, TCSETSF, TCSETSW, TCSETS. - */ switch (cmd) { - case TCSBRK: /* SVID version: non-zero arg --> no break */ - retval = tty_check_change(tty); - if (retval) - return retval; - /* Setup an event to indicate when the transmit - buffer empties */ - spin_lock_irqsave(&epca_lock, flags); - setup_empty_event(tty, ch); - spin_unlock_irqrestore(&epca_lock, flags); - tty_wait_until_sent(tty, 0); - if (!arg) - digi_send_break(ch, HZ / 4); /* 1/4 second */ - return 0; - case TCSBRKP: /* support for POSIX tcsendbreak() */ - retval = tty_check_change(tty); - if (retval) - return retval; - /* Setup an event to indicate when the transmit buffer - empties */ - spin_lock_irqsave(&epca_lock, flags); - setup_empty_event(tty, ch); - spin_unlock_irqrestore(&epca_lock, flags); - tty_wait_until_sent(tty, 0); - digi_send_break(ch, arg ? arg*(HZ/10) : HZ/4); - return 0; case TIOCMODG: mflag = pc_tiocmget(tty, file); if (put_user(mflag, (unsigned long __user *)argp)) @@ -2262,8 +2228,8 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file, tty_wait_until_sent(tty, 0); } else { /* ldisc lock already held in ioctl */ - if (tty->ldisc.flush_buffer) - tty->ldisc.flush_buffer(tty); + if (tty->ldisc.ops->flush_buffer) + tty->ldisc.ops->flush_buffer(tty); } unlock_kernel(); /* Fall Thru */ @@ -2376,7 +2342,7 @@ static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) if (!(old_termios->c_cflag & CLOCAL) && (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&ch->open_wait); + wake_up_interruptible(&ch->port.open_wait); } /* End if channel valid */ } @@ -2386,13 +2352,13 @@ static void do_softint(struct work_struct *work) struct channel *ch = container_of(work, struct channel, tqueue); /* Called in response to a modem change event */ if (ch && ch->magic == EPCA_MAGIC) { - struct tty_struct *tty = ch->tty; + struct tty_struct *tty = ch->port.tty; if (tty && tty->driver_data) { if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) { tty_hangup(tty); - wake_up_interruptible(&ch->open_wait); - ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; + wake_up_interruptible(&ch->port.open_wait); + ch->port.flags &= ~ASYNC_NORMAL_ACTIVE; } } } @@ -2505,10 +2471,14 @@ static void pc_unthrottle(struct tty_struct *tty) } } -static void digi_send_break(struct channel *ch, int msec) +static int pc_send_break(struct tty_struct *tty, int msec) { + struct channel *ch = (struct channel *) tty->driver_data; unsigned long flags; + if (msec == -1) + return -EOPNOTSUPP; + spin_lock_irqsave(&epca_lock, flags); globalwinon(ch); /* @@ -2521,6 +2491,7 @@ static void digi_send_break(struct channel *ch, int msec) fepcmd(ch, SENDBREAK, msec, 0, 10, 0); memoff(ch); spin_unlock_irqrestore(&epca_lock, flags); + return 0; } /* Caller MUST hold the lock */ @@ -2538,7 +2509,8 @@ static void setup_empty_event(struct tty_struct *tty, struct channel *ch) memoff(ch); } -static void epca_setup(char *str, int *ints) +#ifndef MODULE +static void __init epca_setup(char *str, int *ints) { struct board_info board; int index, loop, last; @@ -2792,6 +2764,17 @@ static void epca_setup(char *str, int *ints) num_cards++; } +static int __init epca_real_setup(char *str) +{ + int ints[11]; + + epca_setup(get_options(str, 11, ints), ints); + return 1; +} + +__setup("digiepca", epca_real_setup); +#endif + enum epic_board_types { brd_xr = 0, brd_xem,