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path: root/drivers/char/isicom.c
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Diffstat (limited to 'drivers/char/isicom.c')
-rw-r--r--drivers/char/isicom.c166
1 files changed, 28 insertions, 138 deletions
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 04e4549..24aa6e8 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -328,11 +328,13 @@ static inline void drop_rts(struct isi_port *port)
}
/* card->lock MUST NOT be held */
-static inline void raise_dtr_rts(struct isi_port *port)
+
+static void isicom_raise_dtr_rts(struct tty_port *port)
{
- struct isi_board *card = port->card;
+ struct isi_port *ip = container_of(port, struct isi_port, port);
+ struct isi_board *card = ip->card;
unsigned long base = card->base;
- u16 channel = port->channel;
+ u16 channel = ip->channel;
if (!lock_card(card))
return;
@@ -340,7 +342,7 @@ static inline void raise_dtr_rts(struct isi_port *port)
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0f04, base);
InterruptTheCard(base);
- port->status |= (ISI_DTR | ISI_RTS);
+ ip->status |= (ISI_DTR | ISI_RTS);
unlock_card(card);
}
@@ -830,80 +832,10 @@ static int isicom_setup_port(struct tty_struct *tty)
return 0;
}
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct isi_port *port)
+static int isicom_carrier_raised(struct tty_port *port)
{
- struct isi_board *card = port->card;
- int do_clocal = 0, retval;
- unsigned long flags;
- DECLARE_WAITQUEUE(wait, current);
-
- /* block if port is in the process of being closed */
-
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- pr_dbg("block_til_ready: close in progress.\n");
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- /* if non-blocking mode is set ... */
-
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- pr_dbg("block_til_ready: non-block mode.\n");
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (C_CLOCAL(tty))
- do_clocal = 1;
-
- /* block waiting for DCD to be asserted, and while
- callout dev is busy */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
- spin_lock_irqsave(&card->card_lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count--;
- port->port.blocked_open++;
- spin_unlock_irqrestore(&card->card_lock, flags);
-
- while (1) {
- raise_dtr_rts(port);
-
- 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 || (port->status & ISI_DCD))) {
- break;
- }
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- spin_lock_irqsave(&card->card_lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (retval)
- return retval;
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ struct isi_port *ip = container_of(port, struct isi_port, port);
+ return (ip->status & ISI_DCD)?1 : 0;
}
static int isicom_open(struct tty_struct *tty, struct file *filp)
@@ -932,12 +864,13 @@ static int isicom_open(struct tty_struct *tty, struct file *filp)
isicom_setup_board(card);
+ /* FIXME: locking on port.count etc */
port->port.count++;
tty->driver_data = port;
tty_port_tty_set(&port->port, tty);
error = isicom_setup_port(tty);
if (error == 0)
- error = block_til_ready(tty, filp, port);
+ error = tty_port_block_til_ready(&port->port, tty, filp);
return error;
}
@@ -1012,76 +945,30 @@ static void isicom_flush_buffer(struct tty_struct *tty)
static void isicom_close(struct tty_struct *tty, struct file *filp)
{
- struct isi_port *port = tty->driver_data;
+ struct isi_port *ip = tty->driver_data;
+ struct tty_port *port = &ip->port;
struct isi_board *card;
unsigned long flags;
- if (!port)
- return;
- card = port->card;
- if (isicom_paranoia_check(port, tty->name, "isicom_close"))
- return;
-
- pr_dbg("Close start!!!.\n");
-
- spin_lock_irqsave(&card->card_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- return;
- }
-
- if (tty->count == 1 && port->port.count != 1) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
- "count tty->count = 1 port count = %d.\n",
- card->base, port->port.count);
- port->port.count = 1;
- }
- if (--port->port.count < 0) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
- "count for channel%d = %d", card->base, port->channel,
- port->port.count);
- port->port.count = 0;
- }
+ BUG_ON(!ip);
- if (port->port.count) {
- spin_unlock_irqrestore(&card->card_lock, flags);
+ card = ip->card;
+ if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
return;
- }
- port->port.flags |= ASYNC_CLOSING;
- tty->closing = 1;
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, port->port.closing_wait);
/* indicate to the card that no more data can be received
on this port */
spin_lock_irqsave(&card->card_lock, flags);
- if (port->port.flags & ASYNC_INITIALIZED) {
- card->port_status &= ~(1 << port->channel);
+ if (port->flags & ASYNC_INITIALIZED) {
+ card->port_status &= ~(1 << ip->channel);
outw(card->port_status, card->base + 0x02);
}
- isicom_shutdown_port(port);
+ isicom_shutdown_port(ip);
spin_unlock_irqrestore(&card->card_lock, flags);
isicom_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- spin_lock_irqsave(&card->card_lock, flags);
- tty->closing = 0;
-
- if (port->port.blocked_open) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (port->port.close_delay) {
- pr_dbg("scheduling until time out.\n");
- msleep_interruptible(
- jiffies_to_msecs(port->port.close_delay));
- }
- spin_lock_irqsave(&card->card_lock, flags);
- wake_up_interruptible(&port->port.open_wait);
- }
- port->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
- wake_up_interruptible(&port->port.close_wait);
- spin_unlock_irqrestore(&card->card_lock, flags);
+
+ tty_port_close_end(port, tty);
}
/* write et all */
@@ -1420,10 +1307,7 @@ static void isicom_hangup(struct tty_struct *tty)
isicom_shutdown_port(port);
spin_unlock_irqrestore(&port->card->card_lock, flags);
- port->port.count = 0;
- port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- tty_port_tty_set(&port->port, NULL);
- wake_up_interruptible(&port->port.open_wait);
+ tty_port_hangup(&port->port);
}
@@ -1452,6 +1336,11 @@ static const struct tty_operations isicom_ops = {
.break_ctl = isicom_send_break,
};
+static const struct tty_port_operations isicom_port_ops = {
+ .carrier_raised = isicom_carrier_raised,
+ .raise_dtr_rts = isicom_raise_dtr_rts,
+};
+
static int __devinit reset_card(struct pci_dev *pdev,
const unsigned int card, unsigned int *signature)
{
@@ -1794,6 +1683,7 @@ static int __init isicom_init(void)
spin_lock_init(&isi_card[idx].card_lock);
for (channel = 0; channel < 16; channel++, port++) {
tty_port_init(&port->port);
+ port->port.ops = &isicom_port_ops;
port->magic = ISICOM_MAGIC;
port->card = &isi_card[idx];
port->channel = channel;