Skip to content

L
linux
Commit 4982d6b3 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
Browse files
Options

esp: use tty_port 

Switch esp to use the new tty_port structures
Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 52d41738
Hide whitespace changes
Inline Side-by-side
Showing with 138 additions and 143 deletions
drivers/char/esp.c
View file @ 4982d6b3
...@@ -128,9 +128,9 @@ static struct tty_driver *esp_driver; ...@@ -128,9 +128,9 @@ static struct tty_driver *esp_driver;
#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT) #if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT)
#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \ #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \
tty->name, info->flags, \ tty->name, info->port.flags, \
serial_driver.refcount, \ serial_driver.refcount, \
info->count, tty->count, s) info->port.count, tty->count, s)
#else #else
#define DBG_CNT(s) #define DBG_CNT(s)
#endif #endif
...@@ -172,13 +172,13 @@ static inline int serial_paranoia_check(struct esp_struct *info, ...@@ -172,13 +172,13 @@ static inline int serial_paranoia_check(struct esp_struct *info,
static inline unsigned int serial_in(struct esp_struct *info, int offset) static inline unsigned int serial_in(struct esp_struct *info, int offset)
{ {
return inb(info->port + offset); return inb(info->io_port + offset);
} }
static inline void serial_out(struct esp_struct *info, int offset, static inline void serial_out(struct esp_struct *info, int offset,
unsigned char value) unsigned char value)
{ {
outb(value, info->port+offset); outb(value, info->io_port+offset);
} }
/* /*
...@@ -273,7 +273,7 @@ static inline void release_pio_buffer(struct esp_pio_buffer *buf) ...@@ -273,7 +273,7 @@ static inline void release_pio_buffer(struct esp_pio_buffer *buf)
static inline void receive_chars_pio(struct esp_struct *info, int num_bytes) static inline void receive_chars_pio(struct esp_struct *info, int num_bytes)
{ {
struct tty_struct *tty = info->tty; struct tty_struct *tty = info->port.tty;
int i; int i;
struct esp_pio_buffer *pio_buf; struct esp_pio_buffer *pio_buf;
struct esp_pio_buffer *err_buf; struct esp_pio_buffer *err_buf;
...@@ -295,7 +295,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes) ...@@ -295,7 +295,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes)
for (i = 0; i < num_bytes - 1; i += 2) { for (i = 0; i < num_bytes - 1; i += 2) {
*((unsigned short *)(pio_buf->data + i)) = *((unsigned short *)(pio_buf->data + i)) =
inw(info->port + UART_ESI_RX); inw(info->io_port + UART_ESI_RX);
err_buf->data[i] = serial_in(info, UART_ESI_RWS); err_buf->data[i] = serial_in(info, UART_ESI_RWS);
err_buf->data[i + 1] = (err_buf->data[i] >> 3) & status_mask; err_buf->data[i + 1] = (err_buf->data[i] >> 3) & status_mask;
err_buf->data[i] &= status_mask; err_buf->data[i] &= status_mask;
...@@ -308,7 +308,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes) ...@@ -308,7 +308,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes)
} }
/* make sure everything is still ok since interrupts were enabled */ /* make sure everything is still ok since interrupts were enabled */
tty = info->tty; tty = info->port.tty;
if (!tty) { if (!tty) {
release_pio_buffer(pio_buf); release_pio_buffer(pio_buf);
...@@ -325,7 +325,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes) ...@@ -325,7 +325,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes)
if (err_buf->data[i] & 0x04) { if (err_buf->data[i] & 0x04) {
flag = TTY_BREAK; flag = TTY_BREAK;
if (info->flags & ASYNC_SAK) if (info->port.flags & ASYNC_SAK)
do_SAK(tty); do_SAK(tty);
} else if (err_buf->data[i] & 0x02) } else if (err_buf->data[i] & 0x02)
flag = TTY_FRAME; flag = TTY_FRAME;
...@@ -370,7 +370,7 @@ static void receive_chars_dma(struct esp_struct *info, int num_bytes) ...@@ -370,7 +370,7 @@ static void receive_chars_dma(struct esp_struct *info, int num_bytes)
static inline void receive_chars_dma_done(struct esp_struct *info, static inline void receive_chars_dma_done(struct esp_struct *info,
int status) int status)
{ {
struct tty_struct *tty = info->tty; struct tty_struct *tty = info->port.tty;
int num_bytes; int num_bytes;
unsigned long flags; unsigned long flags;
...@@ -396,7 +396,7 @@ static inline void receive_chars_dma_done(struct esp_struct *info, ...@@ -396,7 +396,7 @@ static inline void receive_chars_dma_done(struct esp_struct *info,
if (status & 0x10) { if (status & 0x10) {
statflag = TTY_BREAK; statflag = TTY_BREAK;
(info->icount.brk)++; (info->icount.brk)++;
if (info->flags & ASYNC_SAK) if (info->port.flags & ASYNC_SAK)
do_SAK(tty); do_SAK(tty);
} else if (status & 0x08) { } else if (status & 0x08) {
statflag = TTY_FRAME; statflag = TTY_FRAME;
...@@ -451,7 +451,7 @@ static inline void transmit_chars_pio(struct esp_struct *info, ...@@ -451,7 +451,7 @@ static inline void transmit_chars_pio(struct esp_struct *info,
for (i = 0; i < space_avail - 1; i += 2) { for (i = 0; i < space_avail - 1; i += 2) {
outw(*((unsigned short *)(pio_buf->data + i)), outw(*((unsigned short *)(pio_buf->data + i)),
info->port + UART_ESI_TX); info->io_port + UART_ESI_TX);
} }
if (space_avail & 0x0001) if (space_avail & 0x0001)
...@@ -470,8 +470,8 @@ static inline void transmit_chars_pio(struct esp_struct *info, ...@@ -470,8 +470,8 @@ static inline void transmit_chars_pio(struct esp_struct *info,
} }
if (info->xmit_cnt < WAKEUP_CHARS) { if (info->xmit_cnt < WAKEUP_CHARS) {
if (info->tty) if (info->port.tty)
tty_wakeup(info->tty); tty_wakeup(info->port.tty);
#ifdef SERIAL_DEBUG_INTR #ifdef SERIAL_DEBUG_INTR
printk("THRE..."); printk("THRE...");
...@@ -507,8 +507,8 @@ static inline void transmit_chars_dma(struct esp_struct *info, int num_bytes) ...@@ -507,8 +507,8 @@ static inline void transmit_chars_dma(struct esp_struct *info, int num_bytes)
info->xmit_tail = (info->xmit_tail + dma_bytes) & (ESP_XMIT_SIZE - 1); info->xmit_tail = (info->xmit_tail + dma_bytes) & (ESP_XMIT_SIZE - 1);
if (info->xmit_cnt < WAKEUP_CHARS) { if (info->xmit_cnt < WAKEUP_CHARS) {
if (info->tty) if (info->port.tty)
tty_wakeup(info->tty); tty_wakeup(info->port.tty);
#ifdef SERIAL_DEBUG_INTR #ifdef SERIAL_DEBUG_INTR
printk("THRE..."); printk("THRE...");
...@@ -575,18 +575,18 @@ static void check_modem_status(struct esp_struct *info) ...@@ -575,18 +575,18 @@ static void check_modem_status(struct esp_struct *info)
wake_up_interruptible(&info->delta_msr_wait); wake_up_interruptible(&info->delta_msr_wait);
} }
if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { if ((info->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR)) #if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR))
printk("ttys%d CD now %s...", info->line, printk("ttys%d CD now %s...", info->line,
(status & UART_MSR_DCD) ? "on" : "off"); (status & UART_MSR_DCD) ? "on" : "off");
#endif #endif
if (status & UART_MSR_DCD) if (status & UART_MSR_DCD)
wake_up_interruptible(&info->open_wait); wake_up_interruptible(&info->port.open_wait);
else { else {
#ifdef SERIAL_DEBUG_OPEN #ifdef SERIAL_DEBUG_OPEN
printk("scheduling hangup..."); printk("scheduling hangup...");
#endif #endif
tty_hangup(info->tty); tty_hangup(info->port.tty);
} }
} }
} }
...@@ -609,7 +609,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) ...@@ -609,7 +609,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
spin_lock(&info->lock); spin_lock(&info->lock);
if (!info->tty) { if (!info->port.tty) {
spin_unlock(&info->lock); spin_unlock(&info->lock);
return IRQ_NONE; return IRQ_NONE;
} }
...@@ -647,7 +647,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) ...@@ -647,7 +647,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
num_bytes = serial_in(info, UART_ESI_STAT1) << 8; num_bytes = serial_in(info, UART_ESI_STAT1) << 8;
num_bytes |= serial_in(info, UART_ESI_STAT2); num_bytes |= serial_in(info, UART_ESI_STAT2);
num_bytes = tty_buffer_request_room(info->tty, num_bytes); num_bytes = tty_buffer_request_room(info->port.tty, num_bytes);
if (num_bytes) { if (num_bytes) {
if (dma_bytes || if (dma_bytes ||
...@@ -661,7 +661,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) ...@@ -661,7 +661,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
if (!(info->stat_flags & (ESP_STAT_DMA_RX | ESP_STAT_DMA_TX)) && if (!(info->stat_flags & (ESP_STAT_DMA_RX | ESP_STAT_DMA_TX)) &&
(scratch & 0x02) && (info->IER & UART_IER_THRI)) { (scratch & 0x02) && (info->IER & UART_IER_THRI)) {
if ((info->xmit_cnt <= 0) || info->tty->stopped) { if ((info->xmit_cnt <= 0) || info->port.tty->stopped) {
info->IER &= ~UART_IER_THRI; info->IER &= ~UART_IER_THRI;
serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK); serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK);
serial_out(info, UART_ESI_CMD2, info->IER); serial_out(info, UART_ESI_CMD2, info->IER);
...@@ -782,7 +782,7 @@ static int startup(struct esp_struct *info) ...@@ -782,7 +782,7 @@ static int startup(struct esp_struct *info)
spin_lock_irqsave(&info->lock, flags); spin_lock_irqsave(&info->lock, flags);
if (info->flags & ASYNC_INITIALIZED) if (info->port.flags & ASYNC_INITIALIZED)
goto out; goto out;
if (!info->xmit_buf) { if (!info->xmit_buf) {
...@@ -806,7 +806,7 @@ static int startup(struct esp_struct *info) ...@@ -806,7 +806,7 @@ static int startup(struct esp_struct *info)
num_chars |= serial_in(info, UART_ESI_STAT2); num_chars |= serial_in(info, UART_ESI_STAT2);
while (num_chars > 1) { while (num_chars > 1) {
inw(info->port + UART_ESI_RX); inw(info->io_port + UART_ESI_RX);
num_chars -= 2; num_chars -= 2;
} }
...@@ -834,9 +834,9 @@ static int startup(struct esp_struct *info) ...@@ -834,9 +834,9 @@ static int startup(struct esp_struct *info)
if (retval) { if (retval) {
if (capable(CAP_SYS_ADMIN)) { if (capable(CAP_SYS_ADMIN)) {
if (info->tty) if (info->port.tty)
set_bit(TTY_IO_ERROR, set_bit(TTY_IO_ERROR,
&info->tty->flags); &info->port.tty->flags);
retval = 0; retval = 0;
} }
goto out_unlocked; goto out_unlocked;
...@@ -874,30 +874,30 @@ static int startup(struct esp_struct *info) ...@@ -874,30 +874,30 @@ static int startup(struct esp_struct *info)
serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK); serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK);
serial_out(info, UART_ESI_CMD2, info->IER); serial_out(info, UART_ESI_CMD2, info->IER);
if (info->tty) if (info->port.tty)
clear_bit(TTY_IO_ERROR, &info->tty->flags); clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
/* /*
* Set up the tty->alt_speed kludge * Set up the tty->alt_speed kludge
*/ */
if (info->tty) { if (info->port.tty) {
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
info->tty->alt_speed = 57600; info->port.tty->alt_speed = 57600;
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
info->tty->alt_speed = 115200; info->port.tty->alt_speed = 115200;
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
info->tty->alt_speed = 230400; info->port.tty->alt_speed = 230400;
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
info->tty->alt_speed = 460800; info->port.tty->alt_speed = 460800;
} }
/* /*
* set the speed of the serial port * set the speed of the serial port
*/ */
change_speed(info); change_speed(info);
info->flags |= ASYNC_INITIALIZED; info->port.flags |= ASYNC_INITIALIZED;
return 0; return 0;
out: out:
...@@ -914,7 +914,7 @@ static void shutdown(struct esp_struct *info) ...@@ -914,7 +914,7 @@ static void shutdown(struct esp_struct *info)
{ {
unsigned long flags, f; unsigned long flags, f;
if (!(info->flags & ASYNC_INITIALIZED)) if (!(info->port.flags & ASYNC_INITIALIZED))
return; return;
#ifdef SERIAL_DEBUG_OPEN #ifdef SERIAL_DEBUG_OPEN
...@@ -951,7 +951,7 @@ static void shutdown(struct esp_struct *info) ...@@ -951,7 +951,7 @@ static void shutdown(struct esp_struct *info)
while (current_port) { while (current_port) {
if ((current_port != info) && if ((current_port != info) &&
(current_port->flags & ASYNC_INITIALIZED)) (current_port->port.flags & ASYNC_INITIALIZED))
break; break;
current_port = current_port->next_port; current_port = current_port->next_port;
...@@ -974,7 +974,7 @@ static void shutdown(struct esp_struct *info) ...@@ -974,7 +974,7 @@ static void shutdown(struct esp_struct *info)
serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK); serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK);
serial_out(info, UART_ESI_CMD2, 0x00); serial_out(info, UART_ESI_CMD2, 0x00);
if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL))
info->MCR &= ~(UART_MCR_DTR|UART_MCR_RTS); info->MCR &= ~(UART_MCR_DTR|UART_MCR_RTS);
info->MCR &= ~UART_MCR_OUT2; info->MCR &= ~UART_MCR_OUT2;
...@@ -982,10 +982,10 @@ static void shutdown(struct esp_struct *info) ...@@ -982,10 +982,10 @@ static void shutdown(struct esp_struct *info)
serial_out(info, UART_ESI_CMD2, UART_MCR); serial_out(info, UART_ESI_CMD2, UART_MCR);
serial_out(info, UART_ESI_CMD2, info->MCR); serial_out(info, UART_ESI_CMD2, info->MCR);
if (info->tty) if (info->port.tty)
set_bit(TTY_IO_ERROR, &info->tty->flags); set_bit(TTY_IO_ERROR, &info->port.tty->flags);
info->flags &= ~ASYNC_INITIALIZED; info->port.flags &= ~ASYNC_INITIALIZED;
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
} }
...@@ -1002,10 +1002,10 @@ static void change_speed(struct esp_struct *info) ...@@ -1002,10 +1002,10 @@ static void change_speed(struct esp_struct *info)
unsigned char flow1 = 0, flow2 = 0; unsigned char flow1 = 0, flow2 = 0;
unsigned long flags; unsigned long flags;
if (!info->tty || !info->tty->termios) if (!info->port.tty || !info->port.tty->termios)
return; return;
cflag = info->tty->termios->c_cflag; cflag = info->port.tty->termios->c_cflag;
port = info->port; port = info->io_port;
/* byte size and parity */ /* byte size and parity */
switch (cflag & CSIZE) { switch (cflag & CSIZE) {
...@@ -1029,9 +1029,9 @@ static void change_speed(struct esp_struct *info) ...@@ -1029,9 +1029,9 @@ static void change_speed(struct esp_struct *info)
if (cflag & CMSPAR) if (cflag & CMSPAR)
cval |= UART_LCR_SPAR; cval |= UART_LCR_SPAR;
#endif #endif
baud = tty_get_baud_rate(info->tty); baud = tty_get_baud_rate(info->port.tty);
if (baud == 38400 && if (baud == 38400 &&
((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
quot = info->custom_divisor; quot = info->custom_divisor;
else { else {
if (baud == 134) /* Special case since 134 is really 134.5 */ if (baud == 134) /* Special case since 134 is really 134.5 */
...@@ -1046,49 +1046,49 @@ static void change_speed(struct esp_struct *info) ...@@ -1046,49 +1046,49 @@ static void change_speed(struct esp_struct *info)
if (baud) { if (baud) {
/* Actual rate */ /* Actual rate */
baud = BASE_BAUD/quot; baud = BASE_BAUD/quot;
tty_encode_baud_rate(info->tty, baud, baud); tty_encode_baud_rate(info->port.tty, baud, baud);
} }
info->timeout = ((1024 * HZ * bits * quot) / BASE_BAUD) + (HZ / 50); info->timeout = ((1024 * HZ * bits * quot) / BASE_BAUD) + (HZ / 50);
/* CTS flow control flag and modem status interrupts */ /* CTS flow control flag and modem status interrupts */
/* info->IER &= ~UART_IER_MSI; */ /* info->IER &= ~UART_IER_MSI; */
if (cflag & CRTSCTS) { if (cflag & CRTSCTS) {
info->flags |= ASYNC_CTS_FLOW; info->port.flags |= ASYNC_CTS_FLOW;
/* info->IER |= UART_IER_MSI; */ /* info->IER |= UART_IER_MSI; */
flow1 = 0x04; flow1 = 0x04;
flow2 = 0x10; flow2 = 0x10;
} else } else
info->flags &= ~ASYNC_CTS_FLOW; info->port.flags &= ~ASYNC_CTS_FLOW;
if (cflag & CLOCAL) if (cflag & CLOCAL)
info->flags &= ~ASYNC_CHECK_CD; info->port.flags &= ~ASYNC_CHECK_CD;
else else
info->flags |= ASYNC_CHECK_CD; info->port.flags |= ASYNC_CHECK_CD;
/* /*
* Set up parity check flag * Set up parity check flag
*/ */
info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
if (I_INPCK(info->tty)) if (I_INPCK(info->port.tty))
info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
info->read_status_mask |= UART_LSR_BI; info->read_status_mask |= UART_LSR_BI;
info->ignore_status_mask = 0; info->ignore_status_mask = 0;
#if 0 #if 0
/* This should be safe, but for some broken bits of hardware... */ /* This should be safe, but for some broken bits of hardware... */
if (I_IGNPAR(info->tty)) { if (I_IGNPAR(info->port.tty)) {
info->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; info->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
info->read_status_mask |= UART_LSR_PE | UART_LSR_FE; info->read_status_mask |= UART_LSR_PE | UART_LSR_FE;
} }
#endif #endif
if (I_IGNBRK(info->tty)) { if (I_IGNBRK(info->port.tty)) {
info->ignore_status_mask |= UART_LSR_BI; info->ignore_status_mask |= UART_LSR_BI;
info->read_status_mask |= UART_LSR_BI; info->read_status_mask |= UART_LSR_BI;
/* /*
* If we're ignore parity and break indicators, ignore * If we're ignore parity and break indicators, ignore
* overruns too. (For real raw support). * overruns too. (For real raw support).
*/ */
if (I_IGNPAR(info->tty)) { if (I_IGNPAR(info->port.tty)) {
info->ignore_status_mask |= UART_LSR_OE | \ info->ignore_status_mask |= UART_LSR_OE | \
UART_LSR_PE | UART_LSR_FE; UART_LSR_PE | UART_LSR_FE;
info->read_status_mask |= UART_LSR_OE | \ info->read_status_mask |= UART_LSR_OE | \
...@@ -1096,7 +1096,7 @@ static void change_speed(struct esp_struct *info) ...@@ -1096,7 +1096,7 @@ static void change_speed(struct esp_struct *info)
} }
} }
if (I_IXOFF(info->tty)) if (I_IXOFF(info->port.tty))
flow1 |= 0x81; flow1 |= 0x81;
spin_lock_irqsave(&info->lock, flags); spin_lock_irqsave(&info->lock, flags);
...@@ -1116,10 +1116,10 @@ static void change_speed(struct esp_struct *info) ...@@ -1116,10 +1116,10 @@ static void change_speed(struct esp_struct *info)
serial_out(info, UART_ESI_CMD2, flow2); serial_out(info, UART_ESI_CMD2, flow2);
/* set flow control characters (XON/XOFF only) */ /* set flow control characters (XON/XOFF only) */
if (I_IXOFF(info->tty)) { if (I_IXOFF(info->port.tty)) {
serial_out(info, UART_ESI_CMD1, ESI_SET_FLOW_CHARS); serial_out(info, UART_ESI_CMD1, ESI_SET_FLOW_CHARS);
serial_out(info, UART_ESI_CMD2, START_CHAR(info->tty)); serial_out(info, UART_ESI_CMD2, START_CHAR(info->port.tty));
serial_out(info, UART_ESI_CMD2, STOP_CHAR(info->tty)); serial_out(info, UART_ESI_CMD2, STOP_CHAR(info->port.tty));
serial_out(info, UART_ESI_CMD2, 0x10); serial_out(info, UART_ESI_CMD2, 0x10);
serial_out(info, UART_ESI_CMD2, 0x21); serial_out(info, UART_ESI_CMD2, 0x21);
switch (cflag & CSIZE) { switch (cflag & CSIZE) {
...@@ -1355,9 +1355,9 @@ static int get_serial_info(struct esp_struct *info, ...@@ -1355,9 +1355,9 @@ static int get_serial_info(struct esp_struct *info,
memset(&tmp, 0, sizeof(tmp)); memset(&tmp, 0, sizeof(tmp));
tmp.type = PORT_16550A; tmp.type = PORT_16550A;
tmp.line = info->line; tmp.line = info->line;
tmp.port = info->port; tmp.port = info->io_port;
tmp.irq = info->irq; tmp.irq = info->irq;
tmp.flags = info->flags; tmp.flags = info->port.flags;
tmp.xmit_fifo_size = 1024; tmp.xmit_fifo_size = 1024;
tmp.baud_base = BASE_BAUD; tmp.baud_base = BASE_BAUD;
tmp.close_delay = info->close_delay; tmp.close_delay = info->close_delay;
...@@ -1407,7 +1407,7 @@ static int set_serial_info(struct esp_struct *info, ...@@ -1407,7 +1407,7 @@ static int set_serial_info(struct esp_struct *info,
if ((new_serial.type != PORT_16550A) || if ((new_serial.type != PORT_16550A) ||
(new_serial.hub6) || (new_serial.hub6) ||
(info->port != new_serial.port) || (info->io_port != new_serial.port) ||
(new_serial.baud_base != BASE_BAUD) || (new_serial.baud_base != BASE_BAUD) ||
(new_serial.irq > 15) || (new_serial.irq > 15) ||
(new_serial.irq < 2) || (new_serial.irq < 2) ||
...@@ -1425,9 +1425,9 @@ static int set_serial_info(struct esp_struct *info, ...@@ -1425,9 +1425,9 @@ static int set_serial_info(struct esp_struct *info,
if (change_irq || if (change_irq ||
(new_serial.close_delay != info->close_delay) || (new_serial.close_delay != info->close_delay) ||
((new_serial.flags & ~ASYNC_USR_MASK) != ((new_serial.flags & ~ASYNC_USR_MASK) !=
(info->flags & ~ASYNC_USR_MASK))) (info->port.flags & ~ASYNC_USR_MASK)))
return -EPERM; return -EPERM;
info->flags = ((info->flags & ~ASYNC_USR_MASK) | info->port.flags = ((info->port.flags & ~ASYNC_USR_MASK) |
(new_serial.flags & ASYNC_USR_MASK)); (new_serial.flags & ASYNC_USR_MASK));
info->custom_divisor = new_serial.custom_divisor; info->custom_divisor = new_serial.custom_divisor;
} else { } else {
...@@ -1441,9 +1441,9 @@ static int set_serial_info(struct esp_struct *info, ...@@ -1441,9 +1441,9 @@ static int set_serial_info(struct esp_struct *info,
if ((current_async->line >= info->line) && if ((current_async->line >= info->line) &&
(current_async->line < (info->line + 8))) { (current_async->line < (info->line + 8))) {
if (current_async == info) { if (current_async == info) {
if (current_async->count > 1) if (current_async->port.count > 1)
return -EBUSY; return -EBUSY;
} else if (current_async->count) } else if (current_async->port.count)
return -EBUSY; return -EBUSY;
} }
...@@ -1456,7 +1456,7 @@ static int set_serial_info(struct esp_struct *info, ...@@ -1456,7 +1456,7 @@ static int set_serial_info(struct esp_struct *info,
* At this point, we start making changes..... * At this point, we start making changes.....
*/ */
info->flags = ((info->flags & ~ASYNC_FLAGS) | info->port.flags = ((info->port.flags & ~ASYNC_FLAGS) |
(new_serial.flags & ASYNC_FLAGS)); (new_serial.flags & ASYNC_FLAGS));
info->custom_divisor = new_serial.custom_divisor; info->custom_divisor = new_serial.custom_divisor;
info->close_delay = new_serial.close_delay * HZ/100; info->close_delay = new_serial.close_delay * HZ/100;
...@@ -1487,18 +1487,18 @@ static int set_serial_info(struct esp_struct *info, ...@@ -1487,18 +1487,18 @@ static int set_serial_info(struct esp_struct *info,
} }
} }
if (info->flags & ASYNC_INITIALIZED) { if (info->port.flags & ASYNC_INITIALIZED) {
if (((old_info.flags & ASYNC_SPD_MASK) != if (((old_info.port.flags & ASYNC_SPD_MASK) !=
(info->flags & ASYNC_SPD_MASK)) || (info->port.flags & ASYNC_SPD_MASK)) ||
(old_info.custom_divisor != info->custom_divisor)) { (old_info.custom_divisor != info->custom_divisor)) {
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
info->tty->alt_speed = 57600; info->port.tty->alt_speed = 57600;
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
info->tty->alt_speed = 115200; info->port.tty->alt_speed = 115200;
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
info->tty->alt_speed = 230400; info->port.tty->alt_speed = 230400;
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
info->tty->alt_speed = 460800; info->port.tty->alt_speed = 460800;
change_speed(info); change_speed(info);
} }
} else } else
...@@ -1554,9 +1554,9 @@ static int set_esp_config(struct esp_struct *info, ...@@ -1554,9 +1554,9 @@ static int set_esp_config(struct esp_struct *info,
while (current_async) { while (current_async) {
if (current_async == info) { if (current_async == info) {
if (current_async->count > 1) if (current_async->port.count > 1)
return -EBUSY; return -EBUSY;
} else if (current_async->count) } else if (current_async->port.count)
return -EBUSY; return -EBUSY;
current_async = current_async->next_port; current_async = current_async->next_port;
...@@ -1578,7 +1578,7 @@ static int set_esp_config(struct esp_struct *info, ...@@ -1578,7 +1578,7 @@ static int set_esp_config(struct esp_struct *info,
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
} else { } else {
/* DMA mode to PIO mode only */ /* DMA mode to PIO mode only */
if (info->count > 1) if (info->port.count > 1)
return -EBUSY; return -EBUSY;
shutdown(info); shutdown(info);
...@@ -1634,7 +1634,7 @@ static int set_esp_config(struct esp_struct *info, ...@@ -1634,7 +1634,7 @@ static int set_esp_config(struct esp_struct *info,
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
} }
if (!(info->flags & ASYNC_INITIALIZED)) if (!(info->port.flags & ASYNC_INITIALIZED))
retval = startup(info); retval = startup(info);
return retval; return retval;
...@@ -1917,9 +1917,9 @@ static void rs_close(struct tty_struct *tty, struct file *filp) ...@@ -1917,9 +1917,9 @@ static void rs_close(struct tty_struct *tty, struct file *filp)
#ifdef SERIAL_DEBUG_OPEN #ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "rs_close ttys%d, count = %d\n", printk(KERN_DEBUG "rs_close ttys%d, count = %d\n",
info->line, info->count); info->line, info->port.count);
#endif #endif
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 * Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. Info->count should always * structure will be freed. Info->count should always
...@@ -1927,19 +1927,19 @@ static void rs_close(struct tty_struct *tty, struct file *filp) ...@@ -1927,19 +1927,19 @@ static void rs_close(struct tty_struct *tty, struct file *filp)
* one, we've got real problems, since it means the * one, we've got real problems, since it means the
* serial port won't be shutdown. * serial port won't be shutdown.
*/ */
printk(KERN_DEBUG "rs_close: bad serial port count; tty->count is 1, info->count is %d\n", info->count); printk(KERN_DEBUG "rs_close: bad serial port count; tty->count is 1, info->port.count is %d\n", info->port.count);
info->count = 1; info->port.count = 1;
} }
if (--info->count < 0) { if (--info->port.count < 0) {
printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n", printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
info->line, info->count); info->line, info->port.count);
info->count = 0; info->port.count = 0;
} }
if (info->count) { if (info->port.count) {
DBG_CNT("before DEC-2"); DBG_CNT("before DEC-2");
goto out; goto out;
} }
info->flags |= ASYNC_CLOSING; info->port.flags |= ASYNC_CLOSING;
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
/* /*
...@@ -1958,7 +1958,7 @@ static void rs_close(struct tty_struct *tty, struct file *filp) ...@@ -1958,7 +1958,7 @@ static void rs_close(struct tty_struct *tty, struct file *filp)
/* info->IER &= ~UART_IER_RLSI; */ /* info->IER &= ~UART_IER_RLSI; */
info->IER &= ~UART_IER_RDI; info->IER &= ~UART_IER_RDI;
info->read_status_mask &= ~UART_LSR_DR; info->read_status_mask &= ~UART_LSR_DR;
if (info->flags & ASYNC_INITIALIZED) { if (info->port.flags & ASYNC_INITIALIZED) {
spin_lock_irqsave(&info->lock, flags); spin_lock_irqsave(&info->lock, flags);
serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK); serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK);
...@@ -1981,15 +1981,15 @@ static void rs_close(struct tty_struct *tty, struct file *filp) ...@@ -1981,15 +1981,15 @@ static void rs_close(struct tty_struct *tty, struct file *filp)
rs_flush_buffer(tty); rs_flush_buffer(tty);
tty_ldisc_flush(tty); tty_ldisc_flush(tty);
tty->closing = 0; tty->closing = 0;
info->tty = NULL; info->port.tty = NULL;
if (info->blocked_open) { if (info->port.blocked_open) {
if (info->close_delay) if (info->close_delay)
msleep_interruptible(jiffies_to_msecs(info->close_delay)); msleep_interruptible(jiffies_to_msecs(info->close_delay));
wake_up_interruptible(&info->open_wait); wake_up_interruptible(&info->port.open_wait);
} }
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait); wake_up_interruptible(&info->port.close_wait);
return; return;
out: out:
...@@ -2047,10 +2047,10 @@ static void esp_hangup(struct tty_struct *tty) ...@@ -2047,10 +2047,10 @@ static void esp_hangup(struct tty_struct *tty)
rs_flush_buffer(tty); rs_flush_buffer(tty);
shutdown(info); shutdown(info);
info->count = 0; info->port.count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE; info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = NULL; info->port.tty = NULL;
wake_up_interruptible(&info->open_wait); wake_up_interruptible(&info->port.open_wait);
} }
/* /*
...@@ -2071,11 +2071,11 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, ...@@ -2071,11 +2071,11 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
* until it's done, and then try again. * until it's done, and then try again.
*/ */
if (tty_hung_up_p(filp) || if (tty_hung_up_p(filp) ||
(info->flags & ASYNC_CLOSING)) { (info->port.flags & ASYNC_CLOSING)) {
if (info->flags & ASYNC_CLOSING) if (info->port.flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->close_wait); interruptible_sleep_on(&info->port.close_wait);
#ifdef SERIAL_DO_RESTART #ifdef SERIAL_DO_RESTART
if (info->flags & ASYNC_HUP_NOTIFY) if (info->port.flags & ASYNC_HUP_NOTIFY)
return -EAGAIN; return -EAGAIN;
else else
return -ERESTARTSYS; return -ERESTARTSYS;
...@@ -2090,7 +2090,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, ...@@ -2090,7 +2090,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
*/ */
if ((filp->f_flags & O_NONBLOCK) || if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) { (tty->flags & (1 << TTY_IO_ERROR))) {
info->flags |= ASYNC_NORMAL_ACTIVE; info->port.flags |= ASYNC_NORMAL_ACTIVE;
return 0; return 0;
} }
...@@ -2100,20 +2100,20 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, ...@@ -2100,20 +2100,20 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
/* /*
* Block waiting for the carrier detect and the line to become * Block waiting for the carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in * free (i.e., not in use by the callout). While we are in
* this loop, info->count is dropped by one, so that * this loop, info->port.count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon * rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal. * exit, either normal or abnormal.
*/ */
retval = 0; retval = 0;
add_wait_queue(&info->open_wait, &wait); add_wait_queue(&info->port.open_wait, &wait);
#ifdef SERIAL_DEBUG_OPEN #ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready before block: ttys%d, count = %d\n", printk(KERN_DEBUG "block_til_ready before block: ttys%d, count = %d\n",
info->line, info->count); info->line, info->port.count);
#endif #endif
spin_lock_irqsave(&info->lock, flags); spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp)) if (!tty_hung_up_p(filp))
info->count--; info->port.count--;
info->blocked_open++; info->port.blocked_open++;
while (1) { while (1) {
if ((tty->termios->c_cflag & CBAUD)) { if ((tty->termios->c_cflag & CBAUD)) {
unsigned int scratch; unsigned int scratch;
...@@ -2128,9 +2128,9 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, ...@@ -2128,9 +2128,9 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
} }
set_current_state(TASK_INTERRUPTIBLE); set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) || if (tty_hung_up_p(filp) ||
!(info->flags & ASYNC_INITIALIZED)) { !(info->port.flags & ASYNC_INITIALIZED)) {
#ifdef SERIAL_DO_RESTART #ifdef SERIAL_DO_RESTART
if (info->flags & ASYNC_HUP_NOTIFY) if (info->port.flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN; retval = -EAGAIN;
else else
retval = -ERESTARTSYS; retval = -ERESTARTSYS;
...@@ -2144,7 +2144,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, ...@@ -2144,7 +2144,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
if (serial_in(info, UART_ESI_STAT2) & UART_MSR_DCD) if (serial_in(info, UART_ESI_STAT2) & UART_MSR_DCD)
do_clocal = 1; do_clocal = 1;
if (!(info->flags & ASYNC_CLOSING) && if (!(info->port.flags & ASYNC_CLOSING) &&
(do_clocal)) (do_clocal))
break; break;
if (signal_pending(current)) { if (signal_pending(current)) {
...@@ -2153,25 +2153,25 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, ...@@ -2153,25 +2153,25 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
} }
#ifdef SERIAL_DEBUG_OPEN #ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready blocking: ttys%d, count = %d\n", printk(KERN_DEBUG "block_til_ready blocking: ttys%d, count = %d\n",
info->line, info->count); info->line, info->port.count);
#endif #endif
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
schedule(); schedule();
spin_lock_irqsave(&info->lock, flags); spin_lock_irqsave(&info->lock, flags);
} }
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&info->open_wait, &wait); remove_wait_queue(&info->port.open_wait, &wait);
if (!tty_hung_up_p(filp)) if (!tty_hung_up_p(filp))
info->count++; info->port.count++;
info->blocked_open--; info->port.blocked_open--;
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
#ifdef SERIAL_DEBUG_OPEN #ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready after blocking: ttys%d, count = %d\n", printk(KERN_DEBUG "block_til_ready after blocking: ttys%d, count = %d\n",
info->line, info->count); info->line, info->port.count);
#endif #endif
if (retval) if (retval)
return retval; return retval;
info->flags |= ASYNC_NORMAL_ACTIVE; info->port.flags |= ASYNC_NORMAL_ACTIVE;
return 0; return 0;
} }
...@@ -2204,12 +2204,12 @@ static int esp_open(struct tty_struct *tty, struct file *filp) ...@@ -2204,12 +2204,12 @@ static int esp_open(struct tty_struct *tty, struct file *filp)
} }
#ifdef SERIAL_DEBUG_OPEN #ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "esp_open %s, count = %d\n", tty->name, info->count); printk(KERN_DEBUG "esp_open %s, count = %d\n", tty->name, info->port.count);
#endif #endif
spin_lock_irqsave(&info->lock, flags); spin_lock_irqsave(&info->lock, flags);
info->count++; info->port.count++;
tty->driver_data = info; tty->driver_data = info;
info->tty = tty; info->port.tty = tty;
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
...@@ -2263,7 +2263,7 @@ static int autoconfig(struct esp_struct *info) ...@@ -2263,7 +2263,7 @@ static int autoconfig(struct esp_struct *info)
int port_detected = 0; int port_detected = 0;
unsigned long flags; unsigned long flags;
if (!request_region(info->port, REGION_SIZE, "esp serial")) if (!request_region(info->io_port, REGION_SIZE, "esp serial"))
return -EIO; return -EIO;
spin_lock_irqsave(&info->lock, flags); spin_lock_irqsave(&info->lock, flags);
...@@ -2300,7 +2300,7 @@ static int autoconfig(struct esp_struct *info) ...@@ -2300,7 +2300,7 @@ static int autoconfig(struct esp_struct *info)
} }
} }
if (!port_detected) if (!port_detected)
release_region(info->port, REGION_SIZE); release_region(info->io_port, REGION_SIZE);
spin_unlock_irqrestore(&info->lock, flags); spin_unlock_irqrestore(&info->lock, flags);
return (port_detected); return (port_detected);
...@@ -2414,7 +2414,7 @@ static int __init espserial_init(void) ...@@ -2414,7 +2414,7 @@ static int __init espserial_init(void)
offset = 0; offset = 0;
do { do {
info->port = esp[i] + offset; info->io_port = esp[i] + offset;
info->irq = irq[i]; info->irq = irq[i];
info->line = (i * 8) + (offset / 8); info->line = (i * 8) + (offset / 8);
...@@ -2425,9 +2425,9 @@ static int __init espserial_init(void) ...@@ -2425,9 +2425,9 @@ static int __init espserial_init(void)
} }
info->custom_divisor = (divisor[i] >> (offset / 2)) & 0xf; info->custom_divisor = (divisor[i] >> (offset / 2)) & 0xf;
info->flags = STD_COM_FLAGS; info->port.flags = STD_COM_FLAGS;
if (info->custom_divisor) if (info->custom_divisor)
info->flags |= ASYNC_SPD_CUST; info->port.flags |= ASYNC_SPD_CUST;
info->magic = ESP_MAGIC; info->magic = ESP_MAGIC;
info->close_delay = 5*HZ/10; info->close_delay = 5*HZ/10;
info->closing_wait = 30*HZ; info->closing_wait = 30*HZ;
...@@ -2436,13 +2436,13 @@ static int __init espserial_init(void) ...@@ -2436,13 +2436,13 @@ static int __init espserial_init(void)
info->config.flow_off = flow_off; info->config.flow_off = flow_off;
info->config.pio_threshold = pio_threshold; info->config.pio_threshold = pio_threshold;
info->next_port = ports; info->next_port = ports;
init_waitqueue_head(&info->open_wait); init_waitqueue_head(&info->port.open_wait);
init_waitqueue_head(&info->close_wait); init_waitqueue_head(&info->port.close_wait);
init_waitqueue_head(&info->delta_msr_wait); init_waitqueue_head(&info->delta_msr_wait);
init_waitqueue_head(&info->break_wait); init_waitqueue_head(&info->break_wait);
ports = info; ports = info;
printk(KERN_INFO "ttyP%d at 0x%04x (irq = %d) is an ESP ", printk(KERN_INFO "ttyP%d at 0x%04x (irq = %d) is an ESP ",
info->line, info->port, info->irq); info->line, info->io_port, info->irq);
if (info->line % 8) { if (info->line % 8) {
printk("secondary port\n"); printk("secondary port\n");
...@@ -2498,8 +2498,8 @@ static void __exit espserial_exit(void) ...@@ -2498,8 +2498,8 @@ static void __exit espserial_exit(void)
put_tty_driver(esp_driver); put_tty_driver(esp_driver);
while (ports) { while (ports) {
if (ports->port) if (ports->io_port)
release_region(ports->port, REGION_SIZE); release_region(ports->io_port, REGION_SIZE);
temp_async = ports->next_port; temp_async = ports->next_port;
kfree(ports); kfree(ports);
ports = temp_async; ports = temp_async;
......
include/linux/hayesesp.h
View file @ 4982d6b3
...@@ -76,11 +76,10 @@ struct hayes_esp_config { ...@@ -76,11 +76,10 @@ struct hayes_esp_config {
struct esp_struct { struct esp_struct {
int magic; int magic;
struct tty_port port;
spinlock_t lock; spinlock_t lock;
int port; int io_port;
int irq; int irq;
int flags; /* defined in tty.h */
struct tty_struct *tty;
int read_status_mask; int read_status_mask;
int ignore_status_mask; int ignore_status_mask;
int timeout; int timeout;
...@@ -93,14 +92,10 @@ struct esp_struct { ...@@ -93,14 +92,10 @@ struct esp_struct {
int MCR; /* Modem control register */ int MCR; /* Modem control register */
unsigned long last_active; unsigned long last_active;
int line; int line;
int count; /* # of fd on device */
int blocked_open; /* # of blocked opens */
unsigned char *xmit_buf; unsigned char *xmit_buf;
int xmit_head; int xmit_head;
int xmit_tail; int xmit_tail;
int xmit_cnt; int xmit_cnt;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
wait_queue_head_t delta_msr_wait; wait_queue_head_t delta_msr_wait;
wait_queue_head_t break_wait; wait_queue_head_t break_wait;
struct async_icount icount; /* kernel counters for the 4 input interrupts */ struct async_icount icount; /* kernel counters for the 4 input interrupts */
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7