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path: root/drivers/char/mxser_new.c
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Diffstat (limited to 'drivers/char/mxser_new.c')
-rw-r--r--drivers/char/mxser_new.c143
1 files changed, 16 insertions, 127 deletions
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index 285104d379c..a3328bb147b 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-23 19:30:54 +0000