um: take chan_*.h and line.h to arch/um/drivers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>

7 files changed, 215 insertions, 6 deletions

diff --git a/arch/um/drivers/chan.h b/arch/um/drivers/chan.h
new file mode 100644
index 000000000000..8df0fd9024dc
--- /dev/null
+++ b/arch/um/drivers/chan.h
@@ -0,0 +1,50 @@
+/* 
+ * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __CHAN_KERN_H__
+#define __CHAN_KERN_H__
+
+#include <linux/tty.h>
+#include <linux/list.h>
+#include <linux/console.h>
+#include "chan_user.h"
+#include "line.h"
+
+struct chan {
+        struct list_head list;
+        struct list_head free_list;
+        struct line *line;
+        char *dev;
+        unsigned int primary:1;
+        unsigned int input:1;
+        unsigned int output:1;
+        unsigned int opened:1;
+        unsigned int enabled:1;
+        int fd;
+        const struct chan_ops *ops;
+        void *data;
+};
+
+extern void chan_interrupt(struct list_head *chans, struct delayed_work *task,
+                           struct tty_struct *tty, int irq);
+extern int parse_chan_pair(char *str, struct line *line, int device,
+                           const struct chan_opts *opts, char **error_out);
+extern int write_chan(struct list_head *chans, const char *buf, int len,
+                             int write_irq);
+extern int console_write_chan(struct list_head *chans, const char *buf, 
+                              int len);
+extern int console_open_chan(struct line *line, struct console *co);
+extern void deactivate_chan(struct list_head *chans, int irq);
+extern void reactivate_chan(struct list_head *chans, int irq);
+extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
+extern int enable_chan(struct line *line);
+extern void close_chan(struct list_head *chans, int delay_free_irq);
+extern int chan_window_size(struct list_head *chans, 
+                             unsigned short *rows_out, 
+                             unsigned short *cols_out);
+extern int chan_config_string(struct list_head *chans, char *str, int size,
+                              char **error_out);
+
+#endif
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index d4191fe1cede..e0406832df89 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -6,7 +6,7 @@
 #include <linux/slab.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
-#include "chan_kern.h"
+#include "chan.h"
 #include "os.h"
 
 #ifdef CONFIG_NOCONFIG_CHAN
diff --git a/arch/um/drivers/chan_user.h b/arch/um/drivers/chan_user.h
new file mode 100644
index 000000000000..9b9ced85b703
--- /dev/null
+++ b/arch/um/drivers/chan_user.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __CHAN_USER_H__
+#define __CHAN_USER_H__
+
+#include "init.h"
+
+struct chan_opts {
+        void (*const announce)(char *dev_name, int dev);
+        char *xterm_title;
+        const int raw;
+};
+
+enum chan_init_pri { INIT_STATIC, INIT_ALL, INIT_ONE };
+
+struct chan_ops {
+        char *type;
+        void *(*init)(char *, int, const struct chan_opts *);
+        int (*open)(int, int, int, void *, char **);
+        void (*close)(int, void *);
+        int (*read)(int, char *, void *);
+        int (*write)(int, const char *, int, void *);
+        int (*console_write)(int, const char *, int);
+        int (*window_size)(int, void *, unsigned short *, unsigned short *);
+        void (*free)(void *);
+        int winch;
+};
+
+extern const struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops,
+        tty_ops, xterm_ops;
+
+extern void generic_close(int fd, void *unused);
+extern int generic_read(int fd, char *c_out, void *unused);
+extern int generic_write(int fd, const char *buf, int n, void *unused);
+extern int generic_console_write(int fd, const char *buf, int n);
+extern int generic_window_size(int fd, void *unused, unsigned short *rows_out,
+                               unsigned short *cols_out);
+extern void generic_free(void *data);
+
+struct tty_struct;
+extern void register_winch(int fd,  struct tty_struct *tty);
+extern void register_winch_irq(int fd, int tty_fd, int pid,
+                               struct tty_struct *tty, unsigned long stack);
+
+#define __channel_help(fn, prefix) \
+__uml_help(fn, prefix "[0-9]*=<channel description>\n" \
+"    Attach a console or serial line to a host channel.  See\n" \
+"    http://user-mode-linux.sourceforge.net/old/input.html for a complete\n" \
+"    description of this switch.\n\n" \
+);
+
+#endif
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 364c8a15c4c3..c1cf2206b84b 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -7,7 +7,7 @@
 #include "linux/kd.h"
 #include "linux/sched.h"
 #include "linux/slab.h"
-#include "chan_kern.h"
+#include "chan.h"
 #include "irq_kern.h"
 #include "irq_user.h"
 #include "kern_util.h"
diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h
new file mode 100644
index 000000000000..63df3ca02ac2
--- /dev/null
+++ b/arch/um/drivers/line.h
@@ -0,0 +1,106 @@
+/* 
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __LINE_H__
+#define __LINE_H__
+
+#include "linux/list.h"
+#include "linux/workqueue.h"
+#include "linux/tty.h"
+#include "linux/interrupt.h"
+#include "linux/spinlock.h"
+#include "linux/mutex.h"
+#include "chan_user.h"
+#include "mconsole_kern.h"
+
+/* There's only one modifiable field in this - .mc.list */
+struct line_driver {
+        const char *name;
+        const char *device_name;
+        const short major;
+        const short minor_start;
+        const short type;
+        const short subtype;
+        const int read_irq;
+        const char *read_irq_name;
+        const int write_irq;
+        const char *write_irq_name;
+        struct mc_device mc;
+};
+
+struct line {
+        struct tty_struct *tty;
+        spinlock_t count_lock;
+        unsigned long count;
+        int valid;
+
+        char *init_str;
+        int init_pri;
+        struct list_head chan_list;
+
+        /*This lock is actually, mostly, local to*/
+        spinlock_t lock;
+        int throttled;
+        /* Yes, this is a real circular buffer.
+         * XXX: And this should become a struct kfifo!
+         *
+         * buffer points to a buffer allocated on demand, of length
+         * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/
+        char *buffer;
+        char *head;
+        char *tail;
+
+        int sigio;
+        struct delayed_work task;
+        const struct line_driver *driver;
+        int have_irq;
+};
+
+#define LINE_INIT(str, d) \
+        { .count_lock = __SPIN_LOCK_UNLOCKED((str).count_lock), \
+          .init_str =   str,    \
+          .init_pri =   INIT_STATIC, \
+          .valid =      1, \
+          .lock =       __SPIN_LOCK_UNLOCKED((str).lock), \
+          .driver =     d }
+
+extern void line_close(struct tty_struct *tty, struct file * filp);
+extern int line_open(struct line *lines, struct tty_struct *tty);
+extern int line_setup(struct line *lines, unsigned int sizeof_lines,
+                      char *init, char **error_out);
+extern int line_write(struct tty_struct *tty, const unsigned char *buf,
+                      int len);
+extern int line_put_char(struct tty_struct *tty, unsigned char ch);
+extern void line_set_termios(struct tty_struct *tty, struct ktermios * old);
+extern int line_chars_in_buffer(struct tty_struct *tty);
+extern void line_flush_buffer(struct tty_struct *tty);
+extern void line_flush_chars(struct tty_struct *tty);
+extern int line_write_room(struct tty_struct *tty);
+extern int line_ioctl(struct tty_struct *tty, unsigned int cmd,
+                                unsigned long arg);
+extern void line_throttle(struct tty_struct *tty);
+extern void line_unthrottle(struct tty_struct *tty);
+
+extern char *add_xterm_umid(char *base);
+extern int line_setup_irq(int fd, int input, int output, struct line *line,
+                          void *data);
+extern void line_close_chan(struct line *line);
+extern struct tty_driver *register_lines(struct line_driver *line_driver,
+                                         const struct tty_operations *driver,
+                                         struct line *lines, int nlines);
+extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
+extern void close_lines(struct line *lines, int nlines);
+
+extern int line_config(struct line *lines, unsigned int sizeof_lines,
+                       char *str, const struct chan_opts *opts,
+                       char **error_out);
+extern int line_id(char **str, int *start_out, int *end_out);
+extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n,
+                       char **error_out);
+extern int line_get_config(char *dev, struct line *lines,
+                           unsigned int sizeof_lines, char *str,
+                           int size, char **error_out);
+
+#endif
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index 678e205adf29..9d8c20af6f80 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -12,9 +12,8 @@
 #include "linux/console.h"
 #include "asm/termbits.h"
 #include "asm/irq.h"
-#include "line.h"
 #include "ssl.h"
-#include "chan_kern.h"
+#include "chan.h"
 #include "init.h"
 #include "irq_user.h"
 #include "mconsole_kern.h"
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 49266f6108c4..088776f01908 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -20,8 +20,7 @@
 #include "asm/current.h"
 #include "asm/irq.h"
 #include "stdio_console.h"
-#include "line.h"
-#include "chan_kern.h"
+#include "chan.h"
 #include "irq_user.h"
 #include "mconsole_kern.h"
 #include "init.h"