[PATCH 15/70] rocket: use tty_port

Alan Cox
2008-06-20T20:21:26Z

Switch the rocketport to use the new tty_port structure

Signed-off-by: Alan Cox <alan@redhat.com>
---

drivers/char/rocket.c | 116 +++++++++++++++++++++++----------------------
drivers/char/rocket_int.h | 9 +--
2 files changed, 61 insertions(+), 64 deletions(-)

diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 743dc80..ab04adb 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -434,15 +434,15 @@ static void rp_do_transmit(struct r_port *info)
#endif
if (!info)
return;
- if (!info->tty) {
+ if (!info->port.tty) {
printk(KERN_WARNING "rp: WARNING %s called with "
- "info->tty==NULL\n", __func__);
+ "info->port.tty==NULL\n", __func__);
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
return;
}

spin_lock_irqsave(&info->slock, flags);
- tty = info->tty;
+ tty = info->port.tty;
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);

/* Loop sending data to FIFO until done or FIFO full */
@@ -502,13 +502,13 @@ static void rp_handle_port(struct r_port *info)
"info->flags & NOT_INIT\n");
return;
}
- if (!info->tty) {
+ if (!info->port.tty) {
printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
- "info->tty==NULL\n");
+ "info->port.tty==NULL\n");
return;
}
cp = &info->channel;
- tty = info->tty;
+ tty = info->port.tty;

IntMask = sGetChanIntID(cp) & info->intmask;
#ifdef ROCKET_DEBUG_INTR
@@ -530,7 +530,7 @@ static void rp_handle_port(struct r_port *info)
tty_hangup(tty);
}
info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
- wake_up_interruptible(&info->open_wait);
+ wake_up_interruptible(&info->port.open_wait);
}
#ifdef ROCKET_DEBUG_INTR
if (IntMask & DELTA_CTS) { /* CTS change */
@@ -650,7 +650,7 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
info->chan = chan;
info->closing_wait = 3000;
info->close_delay = 50;
- init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->port.open_wait);
init_completion(&info->close_wait);
info->flags &= ~ROCKET_MODE_MASK;
switch (pc104[board][line]) {
@@ -717,7 +717,7 @@ static void configure_r_port(struct r_port *info,
unsigned rocketMode;
int bits, baud, divisor;
CHANNEL_t *cp;
- struct ktermios *t = info->tty->termios;
+ struct ktermios *t = info->port.tty->termios;

cp = &info->channel;
cflag = t->c_cflag;
@@ -750,7 +750,7 @@ static void configure_r_port(struct r_port *info,
}

/* baud rate */
- baud = tty_get_baud_rate(info->tty);
+ baud = tty_get_baud_rate(info->port.tty);
if (!baud)
baud = 9600;
divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
@@ -768,7 +768,7 @@ static void configure_r_port(struct r_port *info,
sSetBaud(cp, divisor);

/* FIXME: Should really back compute a baud rate from the divisor */
- tty_encode_baud_rate(info->tty, baud, baud);
+ tty_encode_baud_rate(info->port.tty, baud, baud);

if (cflag & CRTSCTS) {
info->intmask |= DELTA_CTS;
@@ -793,15 +793,15 @@ static void configure_r_port(struct r_port *info,
* Handle software flow control in the board
*/
#ifdef ROCKET_SOFT_FLOW
- if (I_IXON(info->tty)) {
+ if (I_IXON(info->port.tty)) {
sEnTxSoftFlowCtl(cp);
- if (I_IXANY(info->tty)) {
+ if (I_IXANY(info->port.tty)) {
sEnIXANY(cp);
} else {
sDisIXANY(cp);
}
- sSetTxXONChar(cp, START_CHAR(info->tty));
- sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
+ sSetTxXONChar(cp, START_CHAR(info->port.tty));
+ sSetTxXOFFChar(cp, STOP_CHAR(info->port.tty));
} else {
sDisTxSoftFlowCtl(cp);
sDisIXANY(cp);
@@ -813,24 +813,24 @@ static void configure_r_port(struct r_port *info,
* Set up ignore/read mask words
*/
info->read_status_mask = STMRCVROVRH | 0xFF;
- if (I_INPCK(info->tty))
+ if (I_INPCK(info->port.tty))
info->read_status_mask |= STMFRAMEH | STMPARITYH;
- if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
+ if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
info->read_status_mask |= STMBREAKH;

/*
* Characters to ignore
*/
info->ignore_status_mask = 0;
- if (I_IGNPAR(info->tty))
+ if (I_IGNPAR(info->port.tty))
info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
- if (I_IGNBRK(info->tty)) {
+ if (I_IGNBRK(info->port.tty)) {
info->ignore_status_mask |= STMBREAKH;
/*
* If we're ignoring parity and break indicators,
* ignore overruns too. (For real raw support).
*/
- if (I_IGNPAR(info->tty))
+ if (I_IGNPAR(info->port.tty))
info->ignore_status_mask |= STMRCVROVRH;
}

@@ -863,7 +863,7 @@ static void configure_r_port(struct r_port *info,
}
}

-/* info->count is considered critical, protected by spinlocks. */
+/* info->port.count is considered critical, protected by spinlocks. */
static int block_til_ready(struct tty_struct *tty, struct file *filp,
struct r_port *info)
{
@@ -897,13 +897,13 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,

/*
* Block waiting for the carrier detect and the line to become free. While we are in
- * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
+ * this loop, info->port.count is dropped by one, so that rp_close() knows when to free things.
* We restore it upon exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->open_wait, &wait);
+ add_wait_queue(&info->port.open_wait, &wait);
#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
+ printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->port.count);
#endif
spin_lock_irqsave(&info->slock, flags);

@@ -912,10 +912,10 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
#else
if (!tty_hung_up_p(filp)) {
extra_count = 1;
- info->count--;
+ info->port.count--;
}
#endif
- info->blocked_open++;
+ info->port.blocked_open++;

spin_unlock_irqrestore(&info->slock, flags);

@@ -940,24 +940,24 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
}
#ifdef ROCKET_DEBUG_OPEN
printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
- info->line, info->count, info->flags);
+ info->line, info->port.count, info->flags);
#endif
schedule(); /* Don't hold spinlock here, will hang PC */
}
__set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->open_wait, &wait);
+ remove_wait_queue(&info->port.open_wait, &wait);

spin_lock_irqsave(&info->slock, flags);

if (extra_count)
- info->count++;
- info->blocked_open--;
+ info->port.count++;
+ info->port.blocked_open--;

spin_unlock_irqrestore(&info->slock, flags);

#ifdef ROCKET_DEBUG_OPEN
printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
- info->line, info->count);
+ info->line, info->port.count);
#endif
if (retval)
return retval;
@@ -1001,9 +1001,9 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
info->xmit_buf = (unsigned char *) page;

tty->driver_data = info;
- info->tty = tty;
+ info->port.tty = tty;

- if (info->count++ == 0) {
+ if (info->port.count++ == 0) {
atomic_inc(&rp_num_ports_open);

#ifdef ROCKET_DEBUG_OPEN
@@ -1012,7 +1012,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
#endif
}
#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
+ printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
#endif

/*
@@ -1048,13 +1048,13 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
* Set up the tty->alt_speed kludge
*/
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
- info->tty->alt_speed = 57600;
+ info->port.tty->alt_speed = 57600;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
- info->tty->alt_speed = 115200;
+ info->port.tty->alt_speed = 115200;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
- info->tty->alt_speed = 230400;
+ info->port.tty->alt_speed = 230400;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
- info->tty->alt_speed = 460800;
+ info->port.tty->alt_speed = 460800;

configure_r_port(info, NULL);
if (tty->termios->c_cflag & CBAUD) {
@@ -1076,7 +1076,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
}

/*
- * Exception handler that closes a serial port. info->count is considered critical.
+ * Exception handler that closes a serial port. info->port.count is considered critical.
*/
static void rp_close(struct tty_struct *tty, struct file *filp)
{
@@ -1089,14 +1089,14 @@ static void rp_close(struct tty_struct *tty, struct file *filp)
return;

#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
+ printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
#endif

if (tty_hung_up_p(filp))
return;
spin_lock_irqsave(&info->slock, flags);

- if ((tty->count == 1) && (info->count != 1)) {
+ if ((tty->count == 1) && (info->port.count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. Info->count should always
@@ -1105,15 +1105,15 @@ static void rp_close(struct tty_struct *tty, struct file *filp)
* serial port won't be shutdown.
*/
printk(KERN_WARNING "rp_close: bad serial port count; "
- "tty->count is 1, info->count is %d\n", info->count);
- info->count = 1;
+ "tty->count is 1, info->port.count is %d\n", info->port.count);
+ info->port.count = 1;
}
- if (--info->count < 0) {
+ if (--info->port.count < 0) {
printk(KERN_WARNING "rp_close: bad serial port count for "
- "ttyR%d: %d\n", info->line, info->count);
- info->count = 0;
+ "ttyR%d: %d\n", info->line, info->port.count);
+ info->port.count = 0;
}
- if (info->count) {
+ if (info->port.count) {
spin_unlock_irqrestore(&info->slock, flags);
return;
}
@@ -1167,11 +1167,11 @@ static void rp_close(struct tty_struct *tty, struct file *filp)

clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);

- if (info->blocked_open) {
+ if (info->port.blocked_open) {
if (info->close_delay) {
msleep_interruptible(jiffies_to_msecs(info->close_delay));
}
- wake_up_interruptible(&info->open_wait);
+ wake_up_interruptible(&info->port.open_wait);
} else {
if (info->xmit_buf) {
free_page((unsigned long) info->xmit_buf);
@@ -1357,13 +1357,13 @@ static int set_config(struct r_port *info, struct rocket_config __user *new_info
info->closing_wait = new_serial.closing_wait;

if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
- info->tty->alt_speed = 57600;
+ info->port.tty->alt_speed = 57600;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
- info->tty->alt_speed = 115200;
+ info->port.tty->alt_speed = 115200;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
- info->tty->alt_speed = 230400;
+ info->port.tty->alt_speed = 230400;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
- info->tty->alt_speed = 460800;
+ info->port.tty->alt_speed = 460800;

configure_r_port(info, NULL);
return 0;
@@ -1636,13 +1636,13 @@ static void rp_hangup(struct tty_struct *tty)
rp_flush_buffer(tty);
if (info->flags & ROCKET_CLOSING)
return;
- if (info->count)
+ if (info->port.count)
atomic_dec(&rp_num_ports_open);
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);

- info->count = 0;
+ info->port.count = 0;
info->flags &= ~ROCKET_NORMAL_ACTIVE;
- info->tty = NULL;
+ info->port.tty = NULL;

cp = &info->channel;
sDisRxFIFO(cp);
@@ -1653,7 +1653,7 @@ static void rp_hangup(struct tty_struct *tty)
sClrTxXOFF(cp);
info->flags &= ~ROCKET_INITIALIZED;

- wake_up_interruptible(&info->open_wait);
+ wake_up_interruptible(&info->port.open_wait);
}

/*
@@ -1762,7 +1762,7 @@ static int rp_write(struct tty_struct *tty,

/* Write remaining data into the port's xmit_buf */
while (1) {
- if (!info->tty) /* Seemingly obligatory check... */
+ if (!info->port.tty) /* Seemingly obligatory check... */
goto end;
c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
c = min(c, XMIT_BUF_SIZE - info->xmit_head);
diff --git a/drivers/char/rocket_int.h b/drivers/char/rocket_int.h
index 143cc43..3affc48 100644
--- a/drivers/char/rocket_int.h
+++ b/drivers/char/rocket_int.h
@@ -1125,11 +1125,9 @@ Warnings: This function writes the data byte without checking to see if

struct r_port {
int magic;
+ struct tty_port port;
int line;
- int flags;
- int count;
- int blocked_open;
- struct tty_struct *tty;
+ int flags; /* Don't yet match the ASY_ flags!! */
unsigned int board:3;
unsigned int aiop:2;
unsigned int chan:3;
@@ -1148,8 +1146,7 @@ struct r_port {
int read_status_mask;
int cps;

- wait_queue_head_t open_wait;
- struct completion close_wait;
+ struct completion close_wait; /* Not yet matching the core */
spinlock_t slock;
struct mutex write_mtx;
};