/*
* mxser.c -- MOXA Smartio/Industio family multiport serial driver.
*
- * Copyright (C) 1999-2001 Moxa Technologies (support@moxa.com.tw).
+ * Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com.tw).
*
* This code is loosely based on the Linux serial driver, written by
* Linus Torvalds, Theodore T'so and others.
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * Original release 10/26/00
- *
- * 02/06/01 Support MOXA Industio family boards.
- * 02/06/01 Support TIOCGICOUNT.
- * 02/06/01 Fix the problem for connecting to serial mouse.
- * 02/06/01 Fix the problem for H/W flow control.
- * 02/06/01 Fix the compling warning when CONFIG_PCI
- * don't be defined.
- *
* Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox
* <alan@redhat.com>. The original 1.8 code is available on www.moxa.com.
* - Fixed x86_64 cleanness
#include "mxser_new.h"
-#define MXSER_VERSION "1.8"
+#define MXSER_VERSION "1.9.1"
#define MXSERMAJOR 174
#define MXSERCUMAJOR 175
#define MXSER_BOARDS 4 /* Max. boards */
#define MXSER_PORTS 32 /* Max. ports */
#define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */
-#define MXSER_ISR_PASS_LIMIT 256
+#define MXSER_ISR_PASS_LIMIT 99999L
#define MXSER_ERR_IOADDR -1
#define MXSER_ERR_IRQ -2
MXSER_BOARD_CP118U,
MXSER_BOARD_CP102UL,
MXSER_BOARD_CP102U,
+ MXSER_BOARD_CP118EL,
+ MXSER_BOARD_CP168EL,
+ MXSER_BOARD_CP104EL
};
static char *mxser_brdname[] = {
"CP-118U series",
"CP-102UL series",
"CP-102U series",
+ "CP-118EL series",
+ "CP-168EL series",
+ "CP-104EL series"
};
static int mxser_numports[] = {
8, /* CP118U */
2, /* CP102UL */
2, /* CP102U */
+ 8, /* CP118EL */
+ 8, /* CP168EL */
+ 4 /* CP104EL */
};
#define UART_TYPE_NUM 2
#ifdef CONFIG_PCI
static struct pci_device_id mxser_pcibrds[] = {
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C168_PCI},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C104_PCI},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP114},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CT114},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104U},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP168U},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132U},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP134U},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104JU},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_RC7000},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP118U},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102UL},
- {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102U},
- {0}
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168),
+ .driver_data = MXSER_BOARD_C168_PCI },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104),
+ .driver_data = MXSER_BOARD_C104_PCI },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132),
+ .driver_data = MXSER_BOARD_CP132 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114),
+ .driver_data = MXSER_BOARD_CP114 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114),
+ .driver_data = MXSER_BOARD_CT114 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102),
+ .driver_data = MXSER_BOARD_CP102 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U),
+ .driver_data = MXSER_BOARD_CP104U },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U),
+ .driver_data = MXSER_BOARD_CP168U },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U),
+ .driver_data = MXSER_BOARD_CP132U },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U),
+ .driver_data = MXSER_BOARD_CP134U },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU),
+ .driver_data = MXSER_BOARD_CP104JU },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000),
+ .driver_data = MXSER_BOARD_RC7000 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U),
+ .driver_data = MXSER_BOARD_CP118U },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL),
+ .driver_data = MXSER_BOARD_CP102UL },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U),
+ .driver_data = MXSER_BOARD_CP102U },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118EL),
+ .driver_data = MXSER_BOARD_CP118EL },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168EL),
+ .driver_data = MXSER_BOARD_CP168EL },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104EL),
+ .driver_data = MXSER_BOARD_CP104EL },
+ { }
};
MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver");
module_param_array(ioaddr, int, NULL, 0);
module_param(ttymajor, int, 0);
-module_param(calloutmajor, int, 0);
module_param(verbose, bool, 0);
MODULE_LICENSE("GPL");
int board_type;
int ports;
int irq;
- int vector;
- int vector_mask;
+ unsigned long vector;
+ unsigned long vector_mask;
int uart_type;
- int ioaddr[MXSER_PORTS_PER_BOARD];
+ unsigned long ioaddr[MXSER_PORTS_PER_BOARD];
int baud_base[MXSER_PORTS_PER_BOARD];
moxa_pci_info pciInfo;
int IsMoxaMustChipFlag; /* add by Victor Yu. 08-30-2002 */
int MaxCanSetBaudRate[MXSER_PORTS_PER_BOARD]; /* add by Victor Yu. 09-04-2002 */
- int opmode_ioaddr[MXSER_PORTS_PER_BOARD]; /* add by Victor Yu. 01-05-2004 */
+ unsigned long opmode_ioaddr[MXSER_PORTS_PER_BOARD]; /* add by Victor Yu. 01-05-2004 */
};
struct mxser_struct {
int port;
- int base; /* port base address */
+ unsigned long base; /* port base address */
int irq; /* port using irq no. */
- int vector; /* port irq vector */
- int vectormask; /* port vector mask */
+ unsigned long vector; /* port irq vector */
+ unsigned long vectormask; /* port vector mask */
int rx_high_water;
int rx_trigger; /* Rx fifo trigger level */
int rx_low_water;
int timeout;
int IsMoxaMustChipFlag; /* add by Victor Yu. 08-30-2002 */
int MaxCanSetBaudRate; /* add by Victor Yu. 09-04-2002 */
- int opmode_ioaddr; /* add by Victor Yu. 01-05-2004 */
+ unsigned long opmode_ioaddr; /* add by Victor Yu. 01-05-2004 */
unsigned char stop_rx;
unsigned char ldisc_stop_rx;
long realbaud;
if (verbose)
printk(KERN_DEBUG "Loading module mxser ...\n");
+ printk(KERN_INFO "This is mxser driver version 1.9.1 and needs TESTING."
+ "If your are willing to test this driver, please report to "
+ "jirislaby@gmail.com. Thanks.\n");
ret = mxser_init();
if (verbose)
printk(KERN_DEBUG "Done.\n");
{
int i, j;
/* unsigned int val; */
- unsigned int ioaddress;
+ unsigned long ioaddress;
struct pci_dev *pdev = hwconf->pciInfo.pdev;
/* io address */
/* Start finding ISA boards from module arg */
for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
- int cap;
+ unsigned long cap;
if (!(cap = ioaddr[b]))
continue;
tty = info->tty;
- if (tty) {
- if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event))
- tty_wakeup(tty);
- if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event))
- tty_hangup(tty);
- }
+ if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event))
+ tty_wakeup(tty);
+ if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event))
+ tty_hangup(tty);
}
static unsigned char mxser_get_msr(int baseaddr, int mode, int port, struct mxser_struct *info)
/*
* Start up serial port
*/
+ info->count++;
retval = mxser_startup(info);
if (retval)
return retval;
if (retval)
return retval;
- info->count++;
-
if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
if (tty->driver->subtype == SERIAL_TYPE_NORMAL)
*tty->termios = info->normal_termios;
total += c;
}
- if (info->xmit_cnt && !tty->stopped && !(info->IER & UART_IER_THRI)) {
+ if (info->xmit_cnt && !tty->stopped
+ /*&& !(info->IER & UART_IER_THRI)*/) {
if (!tty->hw_stopped ||
(info->type == PORT_16550A) ||
(info->IsMoxaMustChipFlag)) {
spin_lock_irqsave(&info->slock, flags);
+ outb(info->IER & ~UART_IER_THRI, info->base + UART_IER);
info->IER |= UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
spin_unlock_irqrestore(&info->slock, flags);
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 /*&& !(info->IER & UART_IER_THRI)*/) {
if (!tty->hw_stopped ||
(info->type == PORT_16550A) ||
info->IsMoxaMustChipFlag) {
spin_lock_irqsave(&info->slock, flags);
+ outb(info->IER & ~UART_IER_THRI, info->base + UART_IER);
info->IER |= UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
spin_unlock_irqrestore(&info->slock, flags);
spin_lock_irqsave(&info->slock, flags);
+ outb(info->IER & ~UART_IER_THRI, info->base + UART_IER);
info->IER |= UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
static int mxser_chars_in_buffer(struct tty_struct *tty)
{
struct mxser_struct *info = tty->driver_data;
- return info->xmit_cnt;
+ int len = info->xmit_cnt;
+
+ if (!(inb(info->base + UART_LSR) & UART_LSR_THRE))
+ len++;
+
+ return len;
}
static void mxser_flush_buffer(struct tty_struct *tty)
/* following add by Victor Yu. 01-05-2004 */
if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
- int opmode, p;
+ int p;
+ unsigned long opmode;
static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
int shiftbit;
unsigned char val, mask;
return -EFAULT;
return 0;
case MOXA_ASPP_MON_EXT: {
- int status;
- int opmode, p;
- int shiftbit;
+ int status, p, shiftbit;
+ unsigned long opmode;
unsigned cflag, iflag;
for (i = 0; i < MXSER_PORTS; i++) {
static void mxser_stoprx(struct tty_struct *tty)
{
struct mxser_struct *info = tty->driver_data;
- /* unsigned long flags; */
info->ldisc_stop_rx = 1;
if (I_IXOFF(tty)) {
- /* MX_LOCK(&info->slock); */
/* following add by Victor Yu. 09-02-2002 */
if (info->IsMoxaMustChipFlag) {
info->IER &= ~MOXA_MUST_RECV_ISR;
outb(info->IER, info->base + UART_IER);
- } else {
- /* above add by Victor Yu. 09-02-2002 */
+ } else if (!(info->flags & ASYNC_CLOSING)) {
info->x_char = STOP_CHAR(tty);
- /* mask by Victor Yu. 09-02-2002 */
- /* outb(info->IER, 0); */
outb(0, info->base + UART_IER);
info->IER |= UART_IER_THRI;
- /* force Tx interrupt */
outb(info->IER, info->base + UART_IER);
- } /* add by Victor Yu. 09-02-2002 */
- /* MX_UNLOCK(&info->slock); */
+ }
}
if (info->tty->termios->c_cflag & CRTSCTS) {
- /* MX_LOCK(&info->slock); */
info->MCR &= ~UART_MCR_RTS;
outb(info->MCR, info->base + UART_MCR);
- /* MX_UNLOCK(&info->slock); */
}
}
static void mxser_startrx(struct tty_struct *tty)
{
struct mxser_struct *info = tty->driver_data;
- /* unsigned long flags; */
info->ldisc_stop_rx = 0;
if (I_IXOFF(tty)) {
if (info->x_char)
info->x_char = 0;
else {
- /* MX_LOCK(&info->slock); */
-
/* following add by Victor Yu. 09-02-2002 */
if (info->IsMoxaMustChipFlag) {
info->IER |= MOXA_MUST_RECV_ISR;
outb(info->IER, info->base + UART_IER);
- } else {
- /* above add by Victor Yu. 09-02-2002 */
-
+ } else if (!(info->flags & ASYNC_CLOSING)) {
info->x_char = START_CHAR(tty);
- /* mask by Victor Yu. 09-02-2002 */
- /* outb(info->IER, 0); */
- /* add by Victor Yu. 09-02-2002 */
outb(0, info->base + UART_IER);
- /* force Tx interrupt */
info->IER |= UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
- } /* add by Victor Yu. 09-02-2002 */
- /* MX_UNLOCK(&info->slock); */
+ }
}
}
if (info->tty->termios->c_cflag & CRTSCTS) {
- /* MX_LOCK(&info->slock); */
info->MCR |= UART_MCR_RTS;
outb(info->MCR, info->base + UART_MCR);
- /* MX_UNLOCK(&info->slock); */
}
}
*/
static void mxser_throttle(struct tty_struct *tty)
{
- /* struct mxser_struct *info = tty->driver_data; */
- /* unsigned long flags; */
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
- /* MX_LOCK(&info->slock); */
+ spin_lock_irqsave(&info->slock, flags);
mxser_stoprx(tty);
- /* MX_UNLOCK(&info->slock); */
+ spin_unlock_irqrestore(&info->slock, flags);
}
static void mxser_unthrottle(struct tty_struct *tty)
{
- /* struct mxser_struct *info = tty->driver_data; */
- /* unsigned long flags; */
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
- /* MX_LOCK(&info->slock); */
+ spin_lock_irqsave(&info->slock, flags);
mxser_startrx(tty);
- /* MX_UNLOCK(&info->slock); */
+ spin_unlock_irqrestore(&info->slock, flags);
}
static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios)
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
+ /* && !(info->IER & UART_IER_THRI) */) {
+ outb(info->IER & ~UART_IER_THRI, info->base + UART_IER);
info->IER |= UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
}
struct mxser_struct *port;
int max, irqbits, bits, msr;
int pass_counter = 0;
+ unsigned int int_cnt;
int handled = IRQ_NONE;
port = NULL;
continue;
info = port + i;
- /* following add by Victor Yu. 09-13-2002 */
- iir = inb(info->base + UART_IIR);
- if (iir & UART_IIR_NO_INT)
- continue;
- iir &= MOXA_MUST_IIR_MASK;
- if (!info->tty) {
- status = inb(info->base + UART_LSR);
- outb(0x27, info->base + UART_FCR);
- inb(info->base + UART_MSR);
- continue;
- }
- /* above add by Victor Yu. 09-13-2002 */
- /*
- if (info->tty->flip.count < TTY_FLIPBUF_SIZE / 4) {
- info->IER |= MOXA_MUST_RECV_ISR;
- outb(info->IER, info->base + UART_IER);
- }
- */
-
-
- /* mask by Victor Yu. 09-13-2002
- if ( !info->tty ||
- (inb(info->base + UART_IIR) & UART_IIR_NO_INT) )
- continue;
- */
- /* mask by Victor Yu. 09-02-2002
- status = inb(info->base + UART_LSR) & info->read_status_mask;
- */
-
- /* following add by Victor Yu. 09-02-2002 */
- status = inb(info->base + UART_LSR);
+ int_cnt = 0;
+ do {
+ /* following add by Victor Yu. 09-13-2002 */
+ iir = inb(info->base + UART_IIR);
+ if (iir & UART_IIR_NO_INT)
+ break;
+ iir &= MOXA_MUST_IIR_MASK;
+ if (!info->tty) {
+ status = inb(info->base + UART_LSR);
+ outb(0x27, info->base + UART_FCR);
+ inb(info->base + UART_MSR);
+ break;
+ }
+ /* above add by Victor Yu. 09-13-2002 */
- if (status & UART_LSR_PE)
- info->err_shadow |= NPPI_NOTIFY_PARITY;
- if (status & UART_LSR_FE)
- info->err_shadow |= NPPI_NOTIFY_FRAMING;
- if (status & UART_LSR_OE)
- info->err_shadow |= NPPI_NOTIFY_HW_OVERRUN;
- if (status & UART_LSR_BI)
- info->err_shadow |= NPPI_NOTIFY_BREAK;
+ spin_lock(&info->slock);
+ /* following add by Victor Yu. 09-02-2002 */
+ status = inb(info->base + UART_LSR);
- if (info->IsMoxaMustChipFlag) {
- /*
- if ( (status & 0x02) && !(status & 0x01) ) {
- outb(info->base+UART_FCR, 0x23);
- continue;
- }
- */
- if (iir == MOXA_MUST_IIR_GDA ||
- iir == MOXA_MUST_IIR_RDA ||
- iir == MOXA_MUST_IIR_RTO ||
- iir == MOXA_MUST_IIR_LSR)
- mxser_receive_chars(info, &status);
+ if (status & UART_LSR_PE)
+ info->err_shadow |= NPPI_NOTIFY_PARITY;
+ if (status & UART_LSR_FE)
+ info->err_shadow |= NPPI_NOTIFY_FRAMING;
+ if (status & UART_LSR_OE)
+ info->err_shadow |=
+ NPPI_NOTIFY_HW_OVERRUN;
+ if (status & UART_LSR_BI)
+ info->err_shadow |= NPPI_NOTIFY_BREAK;
+
+ if (info->IsMoxaMustChipFlag) {
+ /*
+ if ( (status & 0x02) && !(status & 0x01) ) {
+ outb(info->base+UART_FCR, 0x23);
+ continue;
+ }
+ */
+ if (iir == MOXA_MUST_IIR_GDA ||
+ iir == MOXA_MUST_IIR_RDA ||
+ iir == MOXA_MUST_IIR_RTO ||
+ iir == MOXA_MUST_IIR_LSR)
+ mxser_receive_chars(info,
+ &status);
- } else {
- /* above add by Victor Yu. 09-02-2002 */
+ } else {
+ /* above add by Victor Yu. 09-02-2002 */
- status &= info->read_status_mask;
- if (status & UART_LSR_DR)
- mxser_receive_chars(info, &status);
- }
- msr = inb(info->base + UART_MSR);
- if (msr & UART_MSR_ANY_DELTA) {
- mxser_check_modem_status(info, msr);
- }
- /* following add by Victor Yu. 09-13-2002 */
- if (info->IsMoxaMustChipFlag) {
- if ((iir == 0x02) && (status & UART_LSR_THRE)) {
- mxser_transmit_chars(info);
+ status &= info->read_status_mask;
+ if (status & UART_LSR_DR)
+ mxser_receive_chars(info,
+ &status);
}
- } else {
- /* above add by Victor Yu. 09-13-2002 */
+ msr = inb(info->base + UART_MSR);
+ if (msr & UART_MSR_ANY_DELTA)
+ mxser_check_modem_status(info, msr);
+
+ /* following add by Victor Yu. 09-13-2002 */
+ if (info->IsMoxaMustChipFlag) {
+ if (iir == 0x02 && (status &
+ UART_LSR_THRE))
+ mxser_transmit_chars(info);
+ } else {
+ /* above add by Victor Yu. 09-13-2002 */
- if (status & UART_LSR_THRE) {
-/* 8-2-99 by William
- if ( info->x_char || (info->xmit_cnt > 0) )
-*/
- mxser_transmit_chars(info);
+ if (status & UART_LSR_THRE)
+ mxser_transmit_chars(info);
}
- }
+ spin_unlock(&info->slock);
+ } while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
}
- if (pass_counter++ > MXSER_ISR_PASS_LIMIT) {
+ if (pass_counter++ > MXSER_ISR_PASS_LIMIT)
break; /* Prevent infinite loops */
- }
}
irq_stop:
/* following add by Victor Yu. 09-02-2002 */
if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) {
- if (*status & UART_LSR_SPECIAL) {
+ if (*status & UART_LSR_SPECIAL)
goto intr_old;
- }
/* following add by Victor Yu. 02-11-2004 */
if (info->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID &&
(*status & MOXA_MUST_LSR_RERR))
ch = inb(info->base + UART_RX);
tty_insert_flip_char(tty, ch, 0);
cnt++;
- /*
- if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
- mxser_stoprx(tty);
- info->stop_rx = 1;
- break;
- } */
}
goto end_intr;
}
do {
if (max-- < 0)
break;
- /*
- if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
- mxser_stoprx(tty);
- info->stop_rx=1;
- break;
- }
- */
ch = inb(info->base + UART_RX);
/* following add by Victor Yu. 09-02-2002 */
- if (info->IsMoxaMustChipFlag && (*status & UART_LSR_OE) /*&& !(*status&UART_LSR_DR) */ )
+ if (info->IsMoxaMustChipFlag && (*status & UART_LSR_OE)
+ /*&& !(*status&UART_LSR_DR) */)
outb(0x23, info->base + UART_FCR);
*status &= info->read_status_mask;
/* above add by Victor Yu. 09-02-2002 */
flag = TTY_BREAK;
/* added by casper 1/11/2000 */
info->icount.brk++;
-/* */
+
if (info->flags & ASYNC_SAK)
do_SAK(tty);
} else if (*status & UART_LSR_PE) {
flag = TTY_PARITY;
/* added by casper 1/11/2000 */
info->icount.parity++;
-/* */
} else if (*status & UART_LSR_FE) {
flag = TTY_FRAME;
/* added by casper 1/11/2000 */
info->icount.frame++;
-/* */
} else if (*status & UART_LSR_OE) {
flag = TTY_OVERRUN;
/* added by casper 1/11/2000 */
info->icount.overrun++;
-/* */
- }
- }
+ } else
+ flags = TTY_BREAK;
+ } else
+ flags = 0;
tty_insert_flip_char(tty, ch, flag);
cnt++;
if (cnt >= recv_room) {
/* following add by Victor Yu. 09-02-2002 */
if (info->IsMoxaMustChipFlag)
break;
- /* above add by Victor Yu. 09-02-2002 */
/* mask by Victor Yu. 09-02-2002
*status = inb(info->base + UART_LSR) & info->read_status_mask;
/* added by casper 1/11/2000 */
info->icount.tx++;
-/* */
- spin_unlock_irqrestore(&info->slock, flags);
- return;
+ goto unlock;
}
- if (info->xmit_buf == 0) {
- spin_unlock_irqrestore(&info->slock, flags);
- return;
- }
+ if (info->xmit_buf == 0)
+ goto unlock;
- if ((info->xmit_cnt <= 0) || info->tty->stopped ||
- (info->tty->hw_stopped &&
+ if (info->xmit_cnt == 0) {
+ if (info->xmit_cnt < WAKEUP_CHARS) { /* XXX what's this for?? */
+ set_bit(MXSER_EVENT_TXLOW, &info->event);
+ schedule_work(&info->tqueue);
+ }
+ goto unlock;
+ }
+ if (info->tty->stopped || (info->tty->hw_stopped &&
(info->type != PORT_16550A) &&
(!info->IsMoxaMustChipFlag))) {
info->IER &= ~UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
- spin_unlock_irqrestore(&info->slock, flags);
- return;
+ goto unlock;
}
cnt = info->xmit_cnt;
/* added by James 03-12-2004. */
info->mon_data.txcnt += (cnt - info->xmit_cnt);
info->mon_data.up_txcnt += (cnt - info->xmit_cnt);
-/* (above) added by James. */
/* added by casper 1/11/2000 */
info->icount.tx += (cnt - info->xmit_cnt);
-/* */
if (info->xmit_cnt < WAKEUP_CHARS) {
set_bit(MXSER_EVENT_TXLOW, &info->event);
info->IER &= ~UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
}
+unlock:
spin_unlock_irqrestore(&info->slock, flags);
}
if ((info->type != PORT_16550A) &&
(!info->IsMoxaMustChipFlag)) {
+ outb(info->IER & ~UART_IER_THRI,
+ info->base + UART_IER);
info->IER |= UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
}
set_bit(MXSER_EVENT_TXLOW, &info->event);
- schedule_work(&info->tqueue); }
+ schedule_work(&info->tqueue);
+ }
} else {
if (!(status & UART_MSR_CTS)) {
info->tty->hw_stopped = 1;
- if ((info->type != PORT_16550A) &&
- (!info->IsMoxaMustChipFlag)) {
+ if (info->type != PORT_16550A &&
+ !info->IsMoxaMustChipFlag) {
info->IER &= ~UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
}
if (info->tty->hw_stopped) {
if (status & UART_MSR_CTS) {
info->tty->hw_stopped = 0;
- if ((info->type != PORT_16550A) &&
- (!info->IsMoxaMustChipFlag)) {
+ if (info->type != PORT_16550A &&
+ !info->IsMoxaMustChipFlag) {
+ outb(info->IER & ~UART_IER_THRI,
+ info->base + UART_IER);
info->IER |= UART_IER_THRI;
outb(info->IER, info->base + UART_IER);
}
projects / linux-2.6 / commitdiff