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-rw-r--r--include/linux/n_r3964.h175
-rw-r--r--include/linux/serial_8250.h2
-rw-r--r--include/linux/serial_core.h5
-rw-r--r--include/linux/tty.h78
-rw-r--r--include/linux/tty_driver.h12
-rw-r--r--include/linux/tty_flip.h4
-rw-r--r--include/linux/tty_ldisc.h6
-rw-r--r--include/linux/vt_kern.h1
8 files changed, 61 insertions, 222 deletions
diff --git a/include/linux/n_r3964.h b/include/linux/n_r3964.h
deleted file mode 100644
index 90a803aa42e8..000000000000
--- a/include/linux/n_r3964.h
+++ /dev/null
@@ -1,175 +0,0 @@
-/* r3964 linediscipline for linux
- *
- * -----------------------------------------------------------
- * Copyright by
- * Philips Automation Projects
- * Kassel (Germany)
- * -----------------------------------------------------------
- * This software may be used and distributed according to the terms of
- * the GNU General Public License, incorporated herein by reference.
- *
- * Author:
- * L. Haag
- *
- * $Log: r3964.h,v $
- * Revision 1.4 2005/12/21 19:54:24 Kurt Huwig <kurt huwig de>
- * Fixed HZ usage on 2.6 kernels
- * Removed unnecessary include
- *
- * Revision 1.3 2001/03/18 13:02:24 dwmw2
- * Fix timer usage, use spinlocks properly.
- *
- * Revision 1.2 2001/03/18 12:53:15 dwmw2
- * Merge changes in 2.4.2
- *
- * Revision 1.1.1.1 1998/10/13 16:43:14 dwmw2
- * This'll screw the version control
- *
- * Revision 1.6 1998/09/30 00:40:38 dwmw2
- * Updated to use kernel's N_R3964 if available
- *
- * Revision 1.4 1998/04/02 20:29:44 lhaag
- * select, blocking, ...
- *
- * Revision 1.3 1998/02/12 18:58:43 root
- * fixed some memory leaks
- * calculation of checksum characters
- *
- * Revision 1.2 1998/02/07 13:03:17 root
- * ioctl read_telegram
- *
- * Revision 1.1 1998/02/06 19:19:43 root
- * Initial revision
- *
- *
- */
-#ifndef __LINUX_N_R3964_H__
-#define __LINUX_N_R3964_H__
-
-
-#include <linux/param.h>
-#include <uapi/linux/n_r3964.h>
-
-/*
- * Common ascii handshake characters:
- */
-
-#define STX 0x02
-#define ETX 0x03
-#define DLE 0x10
-#define NAK 0x15
-
-/*
- * Timeouts (from milliseconds to jiffies)
- */
-
-#define R3964_TO_QVZ ((550)*HZ/1000)
-#define R3964_TO_ZVZ ((220)*HZ/1000)
-#define R3964_TO_NO_BUF ((400)*HZ/1000)
-#define R3964_NO_TX_ROOM ((100)*HZ/1000)
-#define R3964_TO_RX_PANIC ((4000)*HZ/1000)
-#define R3964_MAX_RETRIES 5
-
-
-enum { R3964_IDLE,
- R3964_TX_REQUEST, R3964_TRANSMITTING,
- R3964_WAIT_ZVZ_BEFORE_TX_RETRY, R3964_WAIT_FOR_TX_ACK,
- R3964_WAIT_FOR_RX_BUF,
- R3964_RECEIVING, R3964_WAIT_FOR_BCC, R3964_WAIT_FOR_RX_REPEAT
- };
-
-/*
- * All open file-handles are 'clients' and are stored in a linked list:
- */
-
-struct r3964_message;
-
-struct r3964_client_info {
- spinlock_t lock;
- struct pid *pid;
- unsigned int sig_flags;
-
- struct r3964_client_info *next;
-
- struct r3964_message *first_msg;
- struct r3964_message *last_msg;
- struct r3964_block_header *next_block_to_read;
- int msg_count;
-};
-
-
-
-struct r3964_block_header;
-
-/* internal version of client_message: */
-struct r3964_message {
- int msg_id;
- int arg;
- int error_code;
- struct r3964_block_header *block;
- struct r3964_message *next;
-};
-
-/*
- * Header of received block in rx_buf/tx_buf:
- */
-
-struct r3964_block_header
-{
- unsigned int length; /* length in chars without header */
- unsigned char *data; /* usually data is located
- immediately behind this struct */
- unsigned int locks; /* only used in rx_buffer */
-
- struct r3964_block_header *next;
- struct r3964_client_info *owner; /* =NULL in rx_buffer */
-};
-
-/*
- * If rx_buf hasn't enough space to store R3964_MTU chars,
- * we will reject all incoming STX-requests by sending NAK.
- */
-
-#define RX_BUF_SIZE 4000
-#define TX_BUF_SIZE 4000
-#define R3964_MAX_BLOCKS_IN_RX_QUEUE 100
-
-#define R3964_PARITY 0x0001
-#define R3964_FRAME 0x0002
-#define R3964_OVERRUN 0x0004
-#define R3964_UNKNOWN 0x0008
-#define R3964_BREAK 0x0010
-#define R3964_CHECKSUM 0x0020
-#define R3964_ERROR 0x003f
-#define R3964_BCC 0x4000
-#define R3964_DEBUG 0x8000
-
-
-struct r3964_info {
- spinlock_t lock;
- struct tty_struct *tty;
- unsigned char priority;
- unsigned char *rx_buf; /* ring buffer */
- unsigned char *tx_buf;
-
- struct r3964_block_header *rx_first;
- struct r3964_block_header *rx_last;
- struct r3964_block_header *tx_first;
- struct r3964_block_header *tx_last;
- unsigned int tx_position;
- unsigned int rx_position;
- unsigned char last_rx;
- unsigned char bcc;
- unsigned int blocks_in_rx_queue;
-
- struct mutex read_lock; /* serialize r3964_read */
-
- struct r3964_client_info *firstClient;
- unsigned int state;
- unsigned int flags;
-
- struct timer_list tmr;
- int nRetry;
-};
-
-#endif
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 9e655055112d..5db211f43b29 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -146,7 +146,7 @@ static inline struct uart_8250_port *up_to_u8250p(struct uart_port *up)
return container_of(up, struct uart_8250_port, port);
}
-int serial8250_register_8250_port(struct uart_8250_port *);
+int serial8250_register_8250_port(const struct uart_8250_port *);
void serial8250_unregister_port(int line);
void serial8250_suspend_port(int line);
void serial8250_resume_port(int line);
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index d7ed00f1594e..52d7fb92a69d 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -408,7 +408,8 @@ int uart_register_driver(struct uart_driver *uart);
void uart_unregister_driver(struct uart_driver *uart);
int uart_add_one_port(struct uart_driver *reg, struct uart_port *port);
int uart_remove_one_port(struct uart_driver *reg, struct uart_port *port);
-int uart_match_port(struct uart_port *port1, struct uart_port *port2);
+bool uart_match_port(const struct uart_port *port1,
+ const struct uart_port *port2);
/*
* Power Management
@@ -428,7 +429,7 @@ int uart_resume_port(struct uart_driver *reg, struct uart_port *port);
static inline int uart_tx_stopped(struct uart_port *port)
{
struct tty_struct *tty = port->state->port.tty;
- if ((tty && tty->stopped) || port->hw_stopped)
+ if ((tty && tty->flow.stopped) || port->hw_stopped)
return 1;
return 0;
}
diff --git a/include/linux/tty.h b/include/linux/tty.h
index e5d6b1f28823..19dc1097e09c 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -243,20 +243,29 @@ struct tty_port {
#define TTY_PORT_KOPENED 5 /* device exclusively opened by
kernel */
-/*
- * Where all of the state associated with a tty is kept while the tty
- * is open. Since the termios state should be kept even if the tty
- * has been closed --- for things like the baud rate, etc --- it is
- * not stored here, but rather a pointer to the real state is stored
- * here. Possible the winsize structure should have the same
- * treatment, but (1) the default 80x24 is usually right and (2) it's
- * most often used by a windowing system, which will set the correct
- * size each time the window is created or resized anyway.
- * - TYT, 9/14/92
- */
-
struct tty_operations;
+/**
+ * struct tty_struct - state associated with a tty while open
+ *
+ * @flow.lock: lock for flow members
+ * @flow.stopped: tty stopped/started by tty_stop/tty_start
+ * @flow.tco_stopped: tty stopped/started by TCOOFF/TCOON ioctls (it has
+ * precedense over @flow.stopped)
+ * @flow.unused: alignment for Alpha, so that no members other than @flow.* are
+ * modified by the same 64b word store. The @flow's __aligned is
+ * there for the very same reason.
+ * @ctrl.lock: lock for ctrl members
+ * @ctrl.pgrp: process group of this tty (setpgrp(2))
+ * @ctrl.session: session of this tty (setsid(2)). Writes are protected by both
+ * @ctrl.lock and legacy mutex, readers must use at least one of
+ * them.
+ * @ctrl.pktstatus: packet mode status (bitwise OR of TIOCPKT_* constants)
+ * @ctrl.packet: packet mode enabled
+ *
+ * All of the state associated with a tty while the tty is open. Persistent
+ * storage for tty devices is referenced here as @port in struct tty_port.
+ */
struct tty_struct {
int magic;
struct kref kref;
@@ -274,27 +283,30 @@ struct tty_struct {
struct mutex throttle_mutex;
struct rw_semaphore termios_rwsem;
struct mutex winsize_mutex;
- spinlock_t ctrl_lock;
- spinlock_t flow_lock;
/* Termios values are protected by the termios rwsem */
struct ktermios termios, termios_locked;
char name[64];
- struct pid *pgrp; /* Protected by ctrl lock */
- /*
- * Writes protected by both ctrl lock and legacy mutex, readers must use
- * at least one of them.
- */
- struct pid *session;
unsigned long flags;
int count;
struct winsize winsize; /* winsize_mutex */
- unsigned long stopped:1, /* flow_lock */
- flow_stopped:1,
- unused:BITS_PER_LONG - 2;
+
+ struct {
+ spinlock_t lock;
+ bool stopped;
+ bool tco_stopped;
+ unsigned long unused[0];
+ } __aligned(sizeof(unsigned long)) flow;
+
+ struct {
+ spinlock_t lock;
+ struct pid *pgrp;
+ struct pid *session;
+ unsigned char pktstatus;
+ bool packet;
+ unsigned long unused[0];
+ } __aligned(sizeof(unsigned long)) ctrl;
+
int hw_stopped;
- unsigned long ctrl_status:8, /* ctrl_lock */
- packet:1,
- unused_ctrl:BITS_PER_LONG - 9;
unsigned int receive_room; /* Bytes free for queue */
int flow_change;
@@ -446,10 +458,9 @@ extern void tty_unregister_device(struct tty_driver *driver, unsigned index);
extern void tty_write_message(struct tty_struct *tty, char *msg);
extern int tty_send_xchar(struct tty_struct *tty, char ch);
extern int tty_put_char(struct tty_struct *tty, unsigned char c);
-extern int tty_chars_in_buffer(struct tty_struct *tty);
-extern int tty_write_room(struct tty_struct *tty);
+extern unsigned int tty_chars_in_buffer(struct tty_struct *tty);
+extern unsigned int tty_write_room(struct tty_struct *tty);
extern void tty_driver_flush_buffer(struct tty_struct *tty);
-extern void tty_throttle(struct tty_struct *tty);
extern void tty_unthrottle(struct tty_struct *tty);
extern int tty_throttle_safe(struct tty_struct *tty);
extern int tty_unthrottle_safe(struct tty_struct *tty);
@@ -484,6 +495,9 @@ static inline speed_t tty_get_baud_rate(struct tty_struct *tty)
return tty_termios_baud_rate(&tty->termios);
}
+unsigned char tty_get_char_size(unsigned int cflag);
+unsigned char tty_get_frame_size(unsigned int cflag);
+
extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
extern int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
extern int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);
@@ -624,11 +638,11 @@ static inline int tty_port_users(struct tty_port *port)
return port->count + port->blocked_open;
}
-extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
-extern int tty_unregister_ldisc(int disc);
+extern int tty_register_ldisc(struct tty_ldisc_ops *new_ldisc);
+extern void tty_unregister_ldisc(struct tty_ldisc_ops *ldisc);
extern int tty_set_ldisc(struct tty_struct *tty, int disc);
extern int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
- char *f, int count);
+ const char *f, int count);
/* n_tty.c */
extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 2f719b471d52..448f8ee6db6e 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -89,7 +89,7 @@
*
* Note: Do not call this function directly, call tty_driver_flush_chars
*
- * int (*write_room)(struct tty_struct *tty);
+ * unsigned int (*write_room)(struct tty_struct *tty);
*
* This routine returns the numbers of characters the tty driver
* will accept for queuing to be written. This number is subject
@@ -136,7 +136,7 @@
* the line discipline are close to full, and it should somehow
* signal that no more characters should be sent to the tty.
*
- * Optional: Always invoke via tty_throttle(), called under the
+ * Optional: Always invoke via tty_throttle_safe(), called under the
* termios lock.
*
* void (*unthrottle)(struct tty_struct * tty);
@@ -153,7 +153,7 @@
* This routine notifies the tty driver that it should stop
* outputting characters to the tty device.
*
- * Called with ->flow_lock held. Serialized with start() method.
+ * Called with ->flow.lock held. Serialized with start() method.
*
* Optional:
*
@@ -164,7 +164,7 @@
* This routine notifies the tty driver that it resume sending
* characters to the tty device.
*
- * Called with ->flow_lock held. Serialized with stop() method.
+ * Called with ->flow.lock held. Serialized with stop() method.
*
* Optional:
*
@@ -256,8 +256,8 @@ struct tty_operations {
const unsigned char *buf, int count);
int (*put_char)(struct tty_struct *tty, unsigned char ch);
void (*flush_chars)(struct tty_struct *tty);
- int (*write_room)(struct tty_struct *tty);
- int (*chars_in_buffer)(struct tty_struct *tty);
+ unsigned int (*write_room)(struct tty_struct *tty);
+ unsigned int (*chars_in_buffer)(struct tty_struct *tty);
int (*ioctl)(struct tty_struct *tty,
unsigned int cmd, unsigned long arg);
long (*compat_ioctl)(struct tty_struct *tty,
diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index 767f62086bd9..67d78dc553e1 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -2,8 +2,10 @@
#ifndef _LINUX_TTY_FLIP_H
#define _LINUX_TTY_FLIP_H
+#include <linux/tty.h>
+
extern int tty_buffer_set_limit(struct tty_port *port, int limit);
-extern int tty_buffer_space_avail(struct tty_port *port);
+extern unsigned int tty_buffer_space_avail(struct tty_port *port);
extern int tty_buffer_request_room(struct tty_port *port, size_t size);
extern int tty_insert_flip_string_flags(struct tty_port *port,
const unsigned char *chars, const char *flags, size_t size);
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index 31284b55bd4f..fbe9de278629 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -201,15 +201,13 @@ struct tty_ldisc_ops {
* The following routines are called from below.
*/
void (*receive_buf)(struct tty_struct *, const unsigned char *cp,
- char *fp, int count);
+ const char *fp, int count);
void (*write_wakeup)(struct tty_struct *);
void (*dcd_change)(struct tty_struct *, unsigned int);
int (*receive_buf2)(struct tty_struct *, const unsigned char *cp,
- char *fp, int count);
+ const char *fp, int count);
struct module *owner;
-
- int refcount;
};
struct tty_ldisc {
diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h
index 94e7a315479c..0da94a6dee15 100644
--- a/include/linux/vt_kern.h
+++ b/include/linux/vt_kern.h
@@ -166,7 +166,6 @@ int vt_get_kbd_mode_bit(int console, int bit);
void vt_set_kbd_mode_bit(int console, int bit);
void vt_clr_kbd_mode_bit(int console, int bit);
void vt_set_led_state(int console, int leds);
-void vt_set_led_state(int console, int leds);
void vt_kbd_con_start(int console);
void vt_kbd_con_stop(int console);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-03 09:52:19 +0000