diff options
Diffstat (limited to 'drivers/char/mxser_new.c')
-rw-r--r-- | drivers/char/mxser_new.c | 143 |
1 files changed, 16 insertions, 127 deletions
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c index 285104d379cb..a3328bb147b9 100644 --- a/drivers/char/mxser_new.c +++ b/drivers/char/mxser_new.c @@ -346,8 +346,6 @@ static int CheckIsMoxaMust(int io) return MOXA_OTHER_UART; } -/* above is modified by Victor Yu. 08-15-2002 */ - static void process_txrx_fifo(struct mxser_port *info) { int i; @@ -581,12 +579,10 @@ static int mxser_change_speed(struct mxser_port *info, fcr = 0; } else { fcr = UART_FCR_ENABLE_FIFO; - /* following add by Victor Yu. 08-30-2002 */ if (info->board->chip_flag) { fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; SET_MOXA_MUST_FIFO_VALUE(info); } else { - /* above add by Victor Yu. 08-30-2002 */ switch (info->rx_trigger) { case 1: fcr |= UART_FCR_TRIGGER_1; @@ -612,19 +608,8 @@ static int mxser_change_speed(struct mxser_port *info, info->IER |= UART_IER_MSI; if ((info->type == PORT_16550A) || (info->board->chip_flag)) { info->MCR |= UART_MCR_AFE; -/* status = mxser_get_msr(info->ioaddr, 0, info->port); */ -/* - save_flags(flags); - cli(); - status = inb(baseaddr + UART_MSR); - restore_flags(flags); -*/ - /* mxser_check_modem_status(info, status); */ } else { -/* status = mxser_get_msr(info->ioaddr, 0, info->port); */ - /* MX_LOCK(&info->slock); */ status = inb(info->ioaddr + UART_MSR); - /* MX_UNLOCK(&info->slock); */ if (info->tty->hw_stopped) { if (status & UART_MSR_CTS) { info->tty->hw_stopped = 0; @@ -692,7 +677,6 @@ static int mxser_change_speed(struct mxser_port *info, UART_LSR_FE; } } - /* following add by Victor Yu. 09-02-2002 */ if (info->board->chip_flag) { spin_lock_irqsave(&info->slock, flags); SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty)); @@ -707,18 +691,8 @@ static int mxser_change_speed(struct mxser_port *info, } else { DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr); } - /* - if ( I_IXANY(info->tty) ) { - info->MCR |= MOXA_MUST_MCR_XON_ANY; - ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr); - } else { - info->MCR &= ~MOXA_MUST_MCR_XON_ANY; - DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr); - } - */ spin_unlock_irqrestore(&info->slock, flags); } - /* above add by Victor Yu. 09-02-2002 */ outb(fcr, info->ioaddr + UART_FCR); /* set fcr */ @@ -852,12 +826,9 @@ static int mxser_startup(struct mxser_port *info) * Finally, enable interrupts */ info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; - /* info->IER = UART_IER_RLSI | UART_IER_RDI; */ - /* following add by Victor Yu. 08-30-2002 */ if (info->board->chip_flag) info->IER |= MOXA_MUST_IER_EGDAI; - /* above add by Victor Yu. 08-30-2002 */ outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */ /* @@ -917,13 +888,11 @@ static void mxser_shutdown(struct mxser_port *info) outb(info->MCR, info->ioaddr + UART_MCR); /* clear Rx/Tx FIFO's */ - /* following add by Victor Yu. 08-30-2002 */ if (info->board->chip_flag) outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | MOXA_MUST_FCR_GDA_MODE_ENABLE, info->ioaddr + UART_FCR); else - /* above add by Victor Yu. 08-30-2002 */ outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT, info->ioaddr + UART_FCR); @@ -935,10 +904,8 @@ static void mxser_shutdown(struct mxser_port *info) info->flags &= ~ASYNC_INITIALIZED; - /* following add by Victor Yu. 09-23-2002 */ if (info->board->chip_flag) SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr); - /* above add by Victor Yu. 09-23-2002 */ spin_unlock_irqrestore(&info->slock, flags); } @@ -991,12 +958,7 @@ static int mxser_open(struct tty_struct *tty, struct file *filp) info->session = process_session(current); info->pgrp = process_group(current); - /* - status = mxser_get_msr(info->base, 0, info->port); - mxser_check_modem_status(info, status); - */ - -/* unmark here for very high baud rate (ex. 921600 bps) used */ + /* unmark here for very high baud rate (ex. 921600 bps) used */ tty->low_latency = 1; return 0; } @@ -1070,9 +1032,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) info->IER &= ~UART_IER_RLSI; if (info->board->chip_flag) info->IER &= ~MOXA_MUST_RECV_ISR; -/* by William - info->read_status_mask &= ~UART_LSR_DR; -*/ + if (info->flags & ASYNC_INITIALIZED) { outb(info->IER, info->ioaddr + UART_IER); /* @@ -1135,8 +1095,7 @@ static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int cou total += c; } - if (info->xmit_cnt && !tty->stopped - /*&& !(info->IER & UART_IER_THRI)*/) { + if (info->xmit_cnt && !tty->stopped) { if (!tty->hw_stopped || (info->type == PORT_16550A) || (info->board->chip_flag)) { @@ -1167,7 +1126,7 @@ static void mxser_put_char(struct tty_struct *tty, unsigned char ch) info->xmit_head &= SERIAL_XMIT_SIZE - 1; info->xmit_cnt++; spin_unlock_irqrestore(&info->slock, flags); - if (!tty->stopped /*&& !(info->IER & UART_IER_THRI)*/) { + if (!tty->stopped) { if (!tty->hw_stopped || (info->type == PORT_16550A) || info->board->chip_flag) { @@ -1231,14 +1190,12 @@ static void mxser_flush_buffer(struct tty_struct *tty) spin_lock_irqsave(&info->slock, flags); info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - /* below added by shinhay */ fcr = inb(info->ioaddr + UART_FCR); outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), info->ioaddr + UART_FCR); outb(fcr, info->ioaddr + UART_FCR); spin_unlock_irqrestore(&info->slock, flags); - /* above added by shinhay */ tty_wakeup(tty); } @@ -1309,10 +1266,9 @@ static int mxser_set_serial_info(struct mxser_port *info, info->closing_wait = new_serial.closing_wait * HZ / 100; info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; - info->tty->low_latency = 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */ + info->tty->low_latency = 0; } - /* added by casper, 3/17/2000, for mouse */ info->type = new_serial.type; process_txrx_fifo(info); @@ -1430,7 +1386,6 @@ static int mxser_tiocmset(struct tty_struct *tty, struct file *file, static int mxser_program_mode(int port) { int id, i, j, n; - /* unsigned long flags; */ spin_lock(&gm_lock); outb(0, port); @@ -1440,7 +1395,6 @@ static int mxser_program_mode(int port) (void)inb(port); outb(0, port); (void)inb(port); - /* restore_flags(flags); */ spin_unlock(&gm_lock); id = inb(port + 1) & 0x1F; @@ -1623,7 +1577,6 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) continue; status = mxser_get_msr(port->ioaddr, 0, i); -/* mxser_check_modem_status(port, status); */ if (status & UART_MSR_TERI) port->icount.rng++; @@ -1707,7 +1660,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, if (tty->index == MXSER_PORTS) return mxser_ioctl_special(cmd, argp); - /* following add by Victor Yu. 01-05-2004 */ if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { int p; unsigned long opmode; @@ -1739,7 +1691,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, } return 0; } - /* above add by Victor Yu. 01-05-2004 */ if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT && test_bit(TTY_IO_ERROR, &tty->flags)) @@ -1829,7 +1780,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, cnow = info->icount; spin_unlock_irqrestore(&info->slock, flags); p_cuser = argp; - /* modified by casper 1/11/2000 */ if (put_user(cnow.frame, &p_cuser->frame)) return -EFAULT; if (put_user(cnow.brk, &p_cuser->brk)) @@ -1855,7 +1805,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, info->mon_data.rxcnt = 0; info->mon_data.txcnt = 0; return 0; -/* (above) added by James. */ case MOXA_ASPP_SETBAUD:{ long baud; if (get_user(baud, (long __user *)argp)) @@ -1886,8 +1835,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, case MOXA_ASPP_MON: { int mcr, status; - /* info->mon_data.ser_param = tty->termios->c_cflag; */ - status = mxser_get_msr(info->ioaddr, 1, tty->index); mxser_check_modem_status(info, status); @@ -1944,7 +1891,6 @@ static void mxser_stoprx(struct tty_struct *tty) info->ldisc_stop_rx = 1; if (I_IXOFF(tty)) { - /* following add by Victor Yu. 09-02-2002 */ if (info->board->chip_flag) { info->IER &= ~MOXA_MUST_RECV_ISR; outb(info->IER, info->ioaddr + UART_IER); @@ -1981,7 +1927,6 @@ static void mxser_unthrottle(struct tty_struct *tty) if (info->x_char) info->x_char = 0; else { - /* following add by Victor Yu. 09-02-2002 */ if (info->board->chip_flag) { info->IER |= MOXA_MUST_RECV_ISR; outb(info->IER, info->ioaddr + UART_IER); @@ -2025,8 +1970,7 @@ static void mxser_start(struct tty_struct *tty) unsigned long flags; spin_lock_irqsave(&info->slock, flags); - if (info->xmit_cnt && info->xmit_buf - /* && !(info->IER & UART_IER_THRI) */) { + if (info->xmit_cnt && info->xmit_buf) { outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); info->IER |= UART_IER_THRI; outb(info->IER, info->ioaddr + UART_IER); @@ -2051,18 +1995,16 @@ static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termio } } -/* Handle sw stopped */ + /* Handle sw stopped */ if ((old_termios->c_iflag & IXON) && !(tty->termios->c_iflag & IXON)) { tty->stopped = 0; - /* following add by Victor Yu. 09-02-2002 */ if (info->board->chip_flag) { spin_lock_irqsave(&info->slock, flags); DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); spin_unlock_irqrestore(&info->slock, flags); } - /* above add by Victor Yu. 09-02-2002 */ mxser_start(tty); } @@ -2131,7 +2073,6 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) #endif } - /* * This routine is called by tty_hangup() when a hangup is signaled. */ @@ -2148,8 +2089,6 @@ void mxser_hangup(struct tty_struct *tty) wake_up_interruptible(&info->open_wait); } - -/* added by James 03-12-2004. */ /* * mxser_rs_break() --- routine which turns the break handling on or off */ @@ -2168,8 +2107,6 @@ static void mxser_rs_break(struct tty_struct *tty, int break_state) spin_unlock_irqrestore(&info->slock, flags); } -/* (above) added by James. */ - static void mxser_receive_chars(struct mxser_port *port, int *status) { struct tty_struct *tty = port->tty; @@ -2183,36 +2120,26 @@ static void mxser_receive_chars(struct mxser_port *port, int *status) spin_lock_irqsave(&port->slock, flags); recv_room = tty->receive_room; - if ((recv_room == 0) && (!port->ldisc_stop_rx)) { - /* mxser_throttle(tty); */ + if ((recv_room == 0) && (!port->ldisc_stop_rx)) mxser_stoprx(tty); - /* return; */ - } - /* following add by Victor Yu. 09-02-2002 */ if (port->board->chip_flag != MOXA_OTHER_UART) { if (*status & UART_LSR_SPECIAL) goto intr_old; - /* following add by Victor Yu. 02-11-2004 */ if (port->board->chip_flag == MOXA_MUST_MU860_HWID && (*status & MOXA_MUST_LSR_RERR)) goto intr_old; - /* above add by Victor Yu. 02-14-2004 */ if (*status & MOXA_MUST_LSR_RERR) goto intr_old; gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER); - /* add by Victor Yu. 02-11-2004 */ if (port->board->chip_flag == MOXA_MUST_MU150_HWID) gdl &= MOXA_MUST_GDL_MASK; if (gdl >= recv_room) { - if (!port->ldisc_stop_rx) { - /* mxser_throttle(tty); */ + if (!port->ldisc_stop_rx) mxser_stoprx(tty); - } - /* return; */ } while (gdl--) { ch = inb(port->ioaddr + UART_RX); @@ -2221,20 +2148,16 @@ static void mxser_receive_chars(struct mxser_port *port, int *status) } goto end_intr; } - intr_old: - /* above add by Victor Yu. 09-02-2002 */ +intr_old: do { if (max-- < 0) break; ch = inb(port->ioaddr + UART_RX); - /* following add by Victor Yu. 09-02-2002 */ - if (port->board->chip_flag && (*status & UART_LSR_OE) - /*&& !(*status&UART_LSR_DR) */) + if (port->board->chip_flag && (*status & UART_LSR_OE)) outb(0x23, port->ioaddr + UART_FCR); *status &= port->read_status_mask; - /* above add by Victor Yu. 09-02-2002 */ if (*status & port->ignore_status_mask) { if (++ignored > 100) break; @@ -2243,50 +2166,38 @@ static void mxser_receive_chars(struct mxser_port *port, int *status) if (*status & UART_LSR_SPECIAL) { if (*status & UART_LSR_BI) { flag = TTY_BREAK; -/* added by casper 1/11/2000 */ port->icount.brk++; if (port->flags & ASYNC_SAK) do_SAK(tty); } else if (*status & UART_LSR_PE) { flag = TTY_PARITY; -/* added by casper 1/11/2000 */ port->icount.parity++; } else if (*status & UART_LSR_FE) { flag = TTY_FRAME; -/* added by casper 1/11/2000 */ port->icount.frame++; } else if (*status & UART_LSR_OE) { flag = TTY_OVERRUN; -/* added by casper 1/11/2000 */ port->icount.overrun++; } } tty_insert_flip_char(tty, ch, flag); cnt++; if (cnt >= recv_room) { - if (!port->ldisc_stop_rx) { - /* mxser_throttle(tty); */ + if (!port->ldisc_stop_rx) mxser_stoprx(tty); - } break; } } - /* following add by Victor Yu. 09-02-2002 */ if (port->board->chip_flag) break; - /* mask by Victor Yu. 09-02-2002 - *status = inb(port->ioaddr + UART_LSR) & port->read_status_mask; - */ - /* following add by Victor Yu. 09-02-2002 */ *status = inb(port->ioaddr + UART_LSR); - /* above add by Victor Yu. 09-02-2002 */ } while (*status & UART_LSR_DR); -end_intr: /* add by Victor Yu. 09-02-2002 */ +end_intr: mxvar_log.rxcnt[port->tty->index] += cnt; port->mon_data.rxcnt += cnt; port->mon_data.up_rxcnt += cnt; @@ -2308,8 +2219,6 @@ static void mxser_transmit_chars(struct mxser_port *port) mxvar_log.txcnt[port->tty->index]++; port->mon_data.txcnt++; port->mon_data.up_txcnt++; - -/* added by casper 1/11/2000 */ port->icount.tx++; goto unlock; } @@ -2337,11 +2246,8 @@ static void mxser_transmit_chars(struct mxser_port *port) } while (--count > 0); mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt); -/* added by James 03-12-2004. */ port->mon_data.txcnt += (cnt - port->xmit_cnt); port->mon_data.up_txcnt += (cnt - port->xmit_cnt); - -/* added by casper 1/11/2000 */ port->icount.tx += (cnt - port->xmit_cnt); if (port->xmit_cnt < WAKEUP_CHARS) { @@ -2369,8 +2275,6 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) unsigned int int_cnt; int handled = IRQ_NONE; - /* spin_lock(&gm_lock); */ - for (i = 0; i < MXSER_BOARDS; i++) if (dev_id == &mxser_boards[i]) { brd = dev_id; @@ -2397,7 +2301,6 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) int_cnt = 0; do { - /* following add by Victor Yu. 09-13-2002 */ iir = inb(port->ioaddr + UART_IIR); if (iir & UART_IIR_NO_INT) break; @@ -2408,9 +2311,7 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) inb(port->ioaddr + UART_MSR); break; } - /* above add by Victor Yu. 09-13-2002 */ - /* following add by Victor Yu. 09-02-2002 */ status = inb(port->ioaddr + UART_LSR); if (status & UART_LSR_PE) @@ -2424,12 +2325,6 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) port->err_shadow |= NPPI_NOTIFY_BREAK; if (port->board->chip_flag) { - /* - if ( (status & 0x02) && !(status & 0x01) ) { - outb(port->ioaddr+UART_FCR, 0x23); - continue; - } - */ if (iir == MOXA_MUST_IIR_GDA || iir == MOXA_MUST_IIR_RDA || iir == MOXA_MUST_IIR_RTO || @@ -2438,8 +2333,6 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) &status); } else { - /* above add by Victor Yu. 09-02-2002 */ - status &= port->read_status_mask; if (status & UART_LSR_DR) mxser_receive_chars(port, @@ -2449,14 +2342,11 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) if (msr & UART_MSR_ANY_DELTA) mxser_check_modem_status(port, msr); - /* following add by Victor Yu. 09-13-2002 */ if (port->board->chip_flag) { if (iir == 0x02 && (status & UART_LSR_THRE)) mxser_transmit_chars(port); } else { - /* above add by Victor Yu. 09-13-2002 */ - if (status & UART_LSR_THRE) mxser_transmit_chars(port); } @@ -2466,8 +2356,7 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) break; /* Prevent infinite loops */ } - irq_stop: - /* spin_unlock(&gm_lock); */ +irq_stop: return handled; } @@ -2639,10 +2528,10 @@ static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { if (regs[12] & bits) { brd->ports[i].baud_base = 921600; - brd->ports[i].max_baud = 921600; /* add by Victor Yu. 09-04-2002 */ + brd->ports[i].max_baud = 921600; } else { brd->ports[i].baud_base = 115200; - brd->ports[i].max_baud = 115200; /* add by Victor Yu. 09-04-2002 */ + brd->ports[i].max_baud = 115200; } } scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); |