* (at your option) any later version.
*
* 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.
+ * <alan@lxorguk.ukuu.org.uk>. The original 1.8 code is available on
+ * www.moxa.com.
* - Fixed x86_64 cleanness
*/
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/ptrace.h>
-#include <linux/gfp.h>
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/bitops.h>
+#include <linux/slab.h>
#include <asm/system.h>
#include <asm/io.h>
#include "mxser.h"
-#define MXSER_VERSION "2.0.4" /* 1.12 */
+#define MXSER_VERSION "2.0.5" /* 1.14 */
#define MXSERMAJOR 174
#define MXSER_BOARDS 4 /* Max. boards */
#define PCI_DEVICE_ID_POS104UL 0x1044
#define PCI_DEVICE_ID_CB108 0x1080
#define PCI_DEVICE_ID_CP102UF 0x1023
+#define PCI_DEVICE_ID_CP112UL 0x1120
#define PCI_DEVICE_ID_CB114 0x1142
#define PCI_DEVICE_ID_CP114UL 0x1143
#define PCI_DEVICE_ID_CB134I 0x1341
{ "CP-138U series", 8, },
{ "POS-104UL series", 4, },
{ "CP-114UL series", 4, },
-/*30*/ { "CP-102UF series", 2, }
+/*30*/ { "CP-102UF series", 2, },
+ { "CP-112UL series", 2, },
};
/* driver_data correspond to the lines in the structure above
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP114UL), .driver_data = 29 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP102UF), .driver_data = 30 },
+ { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP112UL), .driver_data = 31 },
{ }
};
MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
struct mxser_mon mon_data;
spinlock_t slock;
- wait_queue_head_t delta_msr_wait;
};
struct mxser_board {
return status;
}
-static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
- struct mxser_port *port)
+static int mxser_carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0;
- unsigned long flags;
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- test_bit(TTY_IO_ERROR, &tty->flags)) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
+ struct mxser_port *mp = container_of(port, struct mxser_port, port);
+ return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0;
+}
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
+static void mxser_dtr_rts(struct tty_port *port, int on)
+{
+ struct mxser_port *mp = container_of(port, struct mxser_port, port);
+ unsigned long flags;
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, port->port.count is dropped by one, so that
- * mxser_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
- spin_lock_irqsave(&port->slock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count--;
- spin_unlock_irqrestore(&port->slock, flags);
- port->port.blocked_open++;
- while (1) {
- spin_lock_irqsave(&port->slock, flags);
- outb(inb(port->ioaddr + UART_MCR) |
- UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
- spin_unlock_irqrestore(&port->slock, flags);
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal ||
- (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- if (retval)
- return retval;
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ spin_lock_irqsave(&mp->slock, flags);
+ if (on)
+ outb(inb(mp->ioaddr + UART_MCR) |
+ UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR);
+ else
+ outb(inb(mp->ioaddr + UART_MCR)&~(UART_MCR_DTR | UART_MCR_RTS),
+ mp->ioaddr + UART_MCR);
+ spin_unlock_irqrestore(&mp->slock, flags);
}
static int mxser_set_baud(struct tty_struct *tty, long newspd)
if (status & UART_MSR_DCTS)
port->icount.cts++;
port->mon_data.modem_status = status;
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
if (status & UART_MSR_DCD)
wake_up_interruptible(&port->port.open_wait);
}
- tty = tty_port_tty_get(&port->port);
if (port->port.flags & ASYNC_CTS_FLOW) {
if (tty->hw_stopped) {
if (status & UART_MSR_CTS) {
}
}
-static int mxser_startup(struct tty_struct *tty)
+static int mxser_activate(struct tty_port *port, struct tty_struct *tty)
{
- struct mxser_port *info = tty->driver_data;
+ struct mxser_port *info = container_of(port, struct mxser_port, port);
unsigned long page;
unsigned long flags;
spin_lock_irqsave(&info->slock, flags);
- if (info->port.flags & ASYNC_INITIALIZED) {
- free_page(page);
- spin_unlock_irqrestore(&info->slock, flags);
- return 0;
- }
-
if (!info->ioaddr || !info->type) {
set_bit(TTY_IO_ERROR, &tty->flags);
free_page(page);
spin_unlock_irqrestore(&info->slock, flags);
return 0;
}
- if (info->port.xmit_buf)
- free_page(page);
- else
- info->port.xmit_buf = (unsigned char *) page;
+ info->port.xmit_buf = (unsigned char *) page;
/*
* Clear the FIFO buffers and disable them
if (inb(info->ioaddr + UART_LSR) == 0xff) {
spin_unlock_irqrestore(&info->slock, flags);
if (capable(CAP_SYS_ADMIN)) {
- if (tty)
- set_bit(TTY_IO_ERROR, &tty->flags);
+ set_bit(TTY_IO_ERROR, &tty->flags);
return 0;
} else
return -ENODEV;
* and set the speed of the serial port
*/
mxser_change_speed(tty, NULL);
- info->port.flags |= ASYNC_INITIALIZED;
spin_unlock_irqrestore(&info->slock, flags);
return 0;
}
/*
- * This routine will shutdown a serial port; interrupts maybe disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
+ * This routine will shutdown a serial port
*/
-static void mxser_shutdown(struct tty_struct *tty)
+static void mxser_shutdown_port(struct tty_port *port)
{
- struct mxser_port *info = tty->driver_data;
+ struct mxser_port *info = container_of(port, struct mxser_port, port);
unsigned long flags;
- if (!(info->port.flags & ASYNC_INITIALIZED))
- return;
-
spin_lock_irqsave(&info->slock, flags);
/*
* clear delta_msr_wait queue to avoid mem leaks: we may free the irq
* here so the queue might never be waken up
*/
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&info->port.delta_msr_wait);
/*
- * Free the IRQ, if necessary
+ * Free the xmit buffer, if necessary
*/
if (info->port.xmit_buf) {
free_page((unsigned long) info->port.xmit_buf);
info->IER = 0;
outb(0x00, info->ioaddr + UART_IER);
- if (tty->termios->c_cflag & HUPCL)
- info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
- outb(info->MCR, info->ioaddr + UART_MCR);
-
/* clear Rx/Tx FIFO's */
if (info->board->chip_flag)
outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
/* read data port to reset things */
(void) inb(info->ioaddr + UART_RX);
- set_bit(TTY_IO_ERROR, &tty->flags);
-
- info->port.flags &= ~ASYNC_INITIALIZED;
if (info->board->chip_flag)
SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
static int mxser_open(struct tty_struct *tty, struct file *filp)
{
struct mxser_port *info;
- unsigned long flags;
- int retval, line;
+ int line;
line = tty->index;
if (line == MXSER_PORTS)
if (!info->ioaddr)
return -ENODEV;
- tty->driver_data = info;
- tty_port_tty_set(&info->port, tty);
- /*
- * Start up serial port
- */
- spin_lock_irqsave(&info->slock, flags);
- info->port.count++;
- spin_unlock_irqrestore(&info->slock, flags);
- retval = mxser_startup(tty);
- if (retval)
- return retval;
-
- retval = mxser_block_til_ready(tty, filp, info);
- if (retval)
- return retval;
-
- /* unmark here for very high baud rate (ex. 921600 bps) used */
- tty->low_latency = 1;
- return 0;
+ return tty_port_open(&info->port, tty, filp);
}
static void mxser_flush_buffer(struct tty_struct *tty)
}
-/*
- * This routine is called when the serial port gets closed. First, we
- * wait for the last remaining data to be sent. Then, we unlink its
- * async structure from the interrupt chain if necessary, and we free
- * that IRQ if nothing is left in the chain.
- */
-static void mxser_close(struct tty_struct *tty, struct file *filp)
+static void mxser_close_port(struct tty_port *port)
{
- struct mxser_port *info = tty->driver_data;
-
+ struct mxser_port *info = container_of(port, struct mxser_port, port);
unsigned long timeout;
- unsigned long flags;
-
- if (tty->index == MXSER_PORTS)
- return;
- if (!info)
- return;
-
- spin_lock_irqsave(&info->slock, flags);
-
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&info->slock, flags);
- return;
- }
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. Info->port.count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk(KERN_ERR "mxser_close: bad serial port count; "
- "tty->count is 1, info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
- if (--info->port.count < 0) {
- printk(KERN_ERR "mxser_close: bad serial port count for "
- "ttys%d: %d\n", tty->index, info->port.count);
- info->port.count = 0;
- }
- if (info->port.count) {
- spin_unlock_irqrestore(&info->slock, flags);
- return;
- }
- info->port.flags |= ASYNC_CLOSING;
- spin_unlock_irqrestore(&info->slock, flags);
- /*
- * Save the termios structure, since this port may have
- * separate termios for callout and dialin.
- */
- if (info->port.flags & ASYNC_NORMAL_ACTIVE)
- info->normal_termios = *tty->termios;
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->port.closing_wait);
/*
* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
if (info->board->chip_flag)
info->IER &= ~MOXA_MUST_RECV_ISR;
- if (info->port.flags & ASYNC_INITIALIZED) {
- outb(info->IER, info->ioaddr + UART_IER);
- /*
- * Before we drop DTR, make sure the UART transmitter
- * has completely drained; this is especially
- * important if there is a transmit FIFO!
- */
- timeout = jiffies + HZ;
- while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) {
- schedule_timeout_interruptible(5);
- if (time_after(jiffies, timeout))
- break;
- }
+ outb(info->IER, info->ioaddr + UART_IER);
+ /*
+ * Before we drop DTR, make sure the UART transmitter
+ * has completely drained; this is especially
+ * important if there is a transmit FIFO!
+ */
+ timeout = jiffies + HZ;
+ while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) {
+ schedule_timeout_interruptible(5);
+ if (time_after(jiffies, timeout))
+ break;
}
- mxser_shutdown(tty);
-
- mxser_flush_buffer(tty);
- tty_ldisc_flush(tty);
+}
- tty->closing = 0;
- tty_port_tty_set(&info->port, NULL);
- if (info->port.blocked_open) {
- if (info->port.close_delay)
- schedule_timeout_interruptible(info->port.close_delay);
- wake_up_interruptible(&info->port.open_wait);
- }
+/*
+ * This routine is called when the serial port gets closed. First, we
+ * wait for the last remaining data to be sent. Then, we unlink its
+ * async structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ */
+static void mxser_close(struct tty_struct *tty, struct file *filp)
+{
+ struct mxser_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
+ if (tty->index == MXSER_PORTS)
+ return;
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
+ mutex_lock(&port->mutex);
+ mxser_close_port(port);
+ mxser_flush_buffer(tty);
+ mxser_shutdown_port(port);
+ clear_bit(ASYNCB_INITIALIZED, &port->flags);
+ mutex_unlock(&port->mutex);
+ /* Right now the tty_port set is done outside of the close_end helper
+ as we don't yet have everyone using refcounts */
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
}
static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)
struct serial_struct __user *new_info)
{
struct mxser_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
struct serial_struct new_serial;
speed_t baud;
unsigned long sl_flags;
new_serial.port != info->ioaddr)
return -EINVAL;
- flags = info->port.flags & ASYNC_SPD_MASK;
+ flags = port->flags & ASYNC_SPD_MASK;
if (!capable(CAP_SYS_ADMIN)) {
if ((new_serial.baud_base != info->baud_base) ||
* OK, past this point, all the error checking has been done.
* At this point, we start making changes.....
*/
- info->port.flags = ((info->port.flags & ~ASYNC_FLAGS) |
+ port->flags = ((port->flags & ~ASYNC_FLAGS) |
(new_serial.flags & ASYNC_FLAGS));
- info->port.close_delay = new_serial.close_delay * HZ / 100;
- info->port.closing_wait = new_serial.closing_wait * HZ / 100;
- tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY)
- ? 1 : 0;
- if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST &&
+ port->close_delay = new_serial.close_delay * HZ / 100;
+ port->closing_wait = new_serial.closing_wait * HZ / 100;
+ tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST &&
(new_serial.baud_base != info->baud_base ||
new_serial.custom_divisor !=
info->custom_divisor)) {
+ if (new_serial.custom_divisor == 0)
+ return -EINVAL;
baud = new_serial.baud_base / new_serial.custom_divisor;
tty_encode_baud_rate(tty, baud, baud);
}
process_txrx_fifo(info);
- if (info->port.flags & ASYNC_INITIALIZED) {
- if (flags != (info->port.flags & ASYNC_SPD_MASK)) {
+ if (test_bit(ASYNCB_INITIALIZED, &port->flags)) {
+ if (flags != (port->flags & ASYNC_SPD_MASK)) {
spin_lock_irqsave(&info->slock, sl_flags);
mxser_change_speed(tty, NULL);
spin_unlock_irqrestore(&info->slock, sl_flags);
}
- } else
- retval = mxser_startup(tty);
-
+ } else {
+ retval = mxser_activate(port, tty);
+ if (retval == 0)
+ set_bit(ASYNCB_INITIALIZED, &port->flags);
+ }
return retval;
}
static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
{
- struct mxser_port *port;
+ struct mxser_port *ip;
+ struct tty_port *port;
struct tty_struct *tty;
int result, status;
unsigned int i, j;
case MOXA_CHKPORTENABLE:
result = 0;
- lock_kernel();
for (i = 0; i < MXSER_BOARDS; i++)
for (j = 0; j < MXSER_PORTS_PER_BOARD; j++)
if (mxser_boards[i].ports[j].ioaddr)
result |= (1 << i);
- unlock_kernel();
return put_user(result, (unsigned long __user *)argp);
case MOXA_GETDATACOUNT:
- lock_kernel();
+ /* The receive side is locked by port->slock but it isn't
+ clear that an exact snapshot is worth copying here */
if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log)))
ret = -EFAULT;
- unlock_kernel();
return ret;
case MOXA_GETMSTATUS: {
struct mxser_mstatus ms, __user *msu = argp;
- lock_kernel();
for (i = 0; i < MXSER_BOARDS; i++)
for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) {
- port = &mxser_boards[i].ports[j];
+ ip = &mxser_boards[i].ports[j];
+ port = &ip->port;
memset(&ms, 0, sizeof(ms));
- if (!port->ioaddr)
+ mutex_lock(&port->mutex);
+ if (!ip->ioaddr)
goto copy;
- tty = tty_port_tty_get(&port->port);
+ tty = tty_port_tty_get(port);
if (!tty || !tty->termios)
- ms.cflag = port->normal_termios.c_cflag;
+ ms.cflag = ip->normal_termios.c_cflag;
else
ms.cflag = tty->termios->c_cflag;
tty_kref_put(tty);
- status = inb(port->ioaddr + UART_MSR);
+ spin_lock_irq(&ip->slock);
+ status = inb(ip->ioaddr + UART_MSR);
+ spin_unlock_irq(&ip->slock);
if (status & UART_MSR_DCD)
ms.dcd = 1;
if (status & UART_MSR_DSR)
if (status & UART_MSR_CTS)
ms.cts = 1;
copy:
- if (copy_to_user(msu, &ms, sizeof(ms))) {
- unlock_kernel();
+ mutex_unlock(&port->mutex);
+ if (copy_to_user(msu, &ms, sizeof(ms)))
return -EFAULT;
- }
msu++;
}
- unlock_kernel();
return 0;
}
case MOXA_ASPP_MON_EXT: {
if (!me)
return -ENOMEM;
- lock_kernel();
for (i = 0, p = 0; i < MXSER_BOARDS; i++) {
for (j = 0; j < MXSER_PORTS_PER_BOARD; j++, p++) {
if (p >= ARRAY_SIZE(me->rx_cnt)) {
i = MXSER_BOARDS;
break;
}
- port = &mxser_boards[i].ports[j];
- if (!port->ioaddr)
+ ip = &mxser_boards[i].ports[j];
+ port = &ip->port;
+
+ mutex_lock(&port->mutex);
+ if (!ip->ioaddr) {
+ mutex_unlock(&port->mutex);
continue;
+ }
- status = mxser_get_msr(port->ioaddr, 0, p);
+ spin_lock_irq(&ip->slock);
+ status = mxser_get_msr(ip->ioaddr, 0, p);
if (status & UART_MSR_TERI)
- port->icount.rng++;
+ ip->icount.rng++;
if (status & UART_MSR_DDSR)
- port->icount.dsr++;
+ ip->icount.dsr++;
if (status & UART_MSR_DDCD)
- port->icount.dcd++;
+ ip->icount.dcd++;
if (status & UART_MSR_DCTS)
- port->icount.cts++;
+ ip->icount.cts++;
- port->mon_data.modem_status = status;
- me->rx_cnt[p] = port->mon_data.rxcnt;
- me->tx_cnt[p] = port->mon_data.txcnt;
- me->up_rxcnt[p] = port->mon_data.up_rxcnt;
- me->up_txcnt[p] = port->mon_data.up_txcnt;
+ ip->mon_data.modem_status = status;
+ me->rx_cnt[p] = ip->mon_data.rxcnt;
+ me->tx_cnt[p] = ip->mon_data.txcnt;
+ me->up_rxcnt[p] = ip->mon_data.up_rxcnt;
+ me->up_txcnt[p] = ip->mon_data.up_txcnt;
me->modem_status[p] =
- port->mon_data.modem_status;
- tty = tty_port_tty_get(&port->port);
+ ip->mon_data.modem_status;
+ spin_unlock_irq(&ip->slock);
+
+ tty = tty_port_tty_get(&ip->port);
if (!tty || !tty->termios) {
- cflag = port->normal_termios.c_cflag;
- iflag = port->normal_termios.c_iflag;
- me->baudrate[p] = tty_termios_baud_rate(&port->normal_termios);
+ cflag = ip->normal_termios.c_cflag;
+ iflag = ip->normal_termios.c_iflag;
+ me->baudrate[p] = tty_termios_baud_rate(&ip->normal_termios);
} else {
cflag = tty->termios->c_cflag;
iflag = tty->termios->c_iflag;
if (iflag & (IXON | IXOFF))
me->flowctrl[p] |= 0x0C;
- if (port->type == PORT_16550A)
+ if (ip->type == PORT_16550A)
me->fifo[p] = 1;
- opmode = inb(port->opmode_ioaddr) >>
- ((p % 4) * 2);
+ opmode = inb(ip->opmode_ioaddr)>>((p % 4) * 2);
opmode &= OP_MODE_MASK;
me->iftype[p] = opmode;
+ mutex_unlock(&port->mutex);
}
}
- unlock_kernel();
if (copy_to_user(argp, me, sizeof(*me)))
ret = -EFAULT;
kfree(me);
unsigned int cmd, unsigned long arg)
{
struct mxser_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
struct async_icount cnow;
unsigned long flags;
void __user *argp = (void __user *)arg;
opmode != RS422_MODE &&
opmode != RS485_4WIRE_MODE)
return -EFAULT;
- lock_kernel();
mask = ModeMask[p];
shiftbit = p * 2;
+ spin_lock_irq(&info->slock);
val = inb(info->opmode_ioaddr);
val &= mask;
val |= (opmode << shiftbit);
outb(val, info->opmode_ioaddr);
- unlock_kernel();
+ spin_unlock_irq(&info->slock);
} else {
- lock_kernel();
shiftbit = p * 2;
+ spin_lock_irq(&info->slock);
opmode = inb(info->opmode_ioaddr) >> shiftbit;
+ spin_unlock_irq(&info->slock);
opmode &= OP_MODE_MASK;
- unlock_kernel();
if (put_user(opmode, (int __user *)argp))
return -EFAULT;
}
switch (cmd) {
case TIOCGSERIAL:
- lock_kernel();
+ mutex_lock(&port->mutex);
retval = mxser_get_serial_info(tty, argp);
- unlock_kernel();
+ mutex_unlock(&port->mutex);
return retval;
case TIOCSSERIAL:
- lock_kernel();
+ mutex_lock(&port->mutex);
retval = mxser_set_serial_info(tty, argp);
- unlock_kernel();
+ mutex_unlock(&port->mutex);
return retval;
case TIOCSERGETLSR: /* Get line status register */
return mxser_get_lsr_info(info, argp);
cnow = info->icount; /* note the counters on entry */
spin_unlock_irqrestore(&info->slock, flags);
- return wait_event_interruptible(info->delta_msr_wait,
+ return wait_event_interruptible(info->port.delta_msr_wait,
mxser_cflags_changed(info, arg, &cnow));
/*
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
case MOXA_HighSpeedOn:
return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
case MOXA_SDS_RSTICOUNTER:
- lock_kernel();
+ spin_lock_irq(&info->slock);
info->mon_data.rxcnt = 0;
info->mon_data.txcnt = 0;
- unlock_kernel();
+ spin_unlock_irq(&info->slock);
return 0;
case MOXA_ASPP_OQUEUE:{
int len, lsr;
- lock_kernel();
len = mxser_chars_in_buffer(tty);
- lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
+ spin_lock(&info->slock);
+ lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE;
+ spin_unlock_irq(&info->slock);
len += (lsr ? 0 : 1);
- unlock_kernel();
return put_user(len, (int __user *)argp);
}
case MOXA_ASPP_MON: {
int mcr, status;
- lock_kernel();
+ spin_lock(&info->slock);
status = mxser_get_msr(info->ioaddr, 1, tty->index);
mxser_check_modem_status(tty, info, status);
mcr = inb(info->ioaddr + UART_MCR);
+ spin_unlock(&info->slock);
+
if (mcr & MOXA_MUST_MCR_XON_FLAG)
info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
else
info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
else
info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
- unlock_kernel();
+
if (copy_to_user(argp, &info->mon_data,
sizeof(struct mxser_mon)))
return -EFAULT;
{
struct mxser_port *info = tty->driver_data;
unsigned long orig_jiffies, char_time;
+ unsigned long flags;
int lsr;
if (info->type == PORT_UNKNOWN)
timeout, char_time);
printk("jiff=%lu...", jiffies);
#endif
- lock_kernel();
+ spin_lock_irqsave(&info->slock, flags);
while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) {
#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
#endif
+ spin_unlock_irqrestore(&info->slock, flags);
schedule_timeout_interruptible(char_time);
+ spin_lock_irqsave(&info->slock, flags);
if (signal_pending(current))
break;
if (timeout && time_after(jiffies, orig_jiffies + timeout))
break;
}
+ spin_unlock_irqrestore(&info->slock, flags);
set_current_state(TASK_RUNNING);
- unlock_kernel();
#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
struct mxser_port *info = tty->driver_data;
mxser_flush_buffer(tty);
- mxser_shutdown(tty);
- info->port.count = 0;
- info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- tty_port_tty_set(&info->port, NULL);
- wake_up_interruptible(&info->port.open_wait);
+ tty_port_hangup(&info->port);
}
/*
.tiocmset = mxser_tiocmset,
};
+struct tty_port_operations mxser_port_ops = {
+ .carrier_raised = mxser_carrier_raised,
+ .dtr_rts = mxser_dtr_rts,
+ .activate = mxser_activate,
+ .shutdown = mxser_shutdown_port,
+};
+
/*
* The MOXA Smartio/Industio serial driver boot-time initialization code!
*/
for (i = 0; i < brd->info->nports; i++) {
info = &brd->ports[i];
tty_port_init(&info->port);
+ info->port.ops = &mxser_port_ops;
info->board = brd;
info->stop_rx = 0;
info->ldisc_stop_rx = 0;
info->port.close_delay = 5 * HZ / 10;
info->port.closing_wait = 30 * HZ;
info->normal_termios = mxvar_sdriver->init_termios;
- init_waitqueue_head(&info->delta_msr_wait);
memset(&info->mon_data, 0, sizeof(struct mxser_mon));
info->err_shadow = 0;
spin_lock_init(&info->slock);
continue;
brd = &mxser_boards[m];
- retval = mxser_get_ISA_conf(!ioaddr[b], brd);
+ retval = mxser_get_ISA_conf(ioaddr[b], brd);
if (retval <= 0) {
brd->info = NULL;
continue;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff