/* tty.h - Terminals */ #include #undef lock #undef unlock #define TTY_REVIVE 6767 /* First minor numbers for the various classes of TTY devices. */ #define CONS_MINOR 0 #define LOG_MINOR 15 #define RS232_MINOR 16 #define KBD_MINOR 127 #define KBDAUX_MINOR 126 #define VIDEO_MINOR 125 #define TTYPX_MINOR 128 #define PTYPX_MINOR 192 #define LINEWRAP 1 /* console.c - wrap lines at column 80 */ #define TTY_IN_BYTES 256 /* tty input queue size */ #define TAB_SIZE 8 /* distance between tab stops */ #define TAB_MASK 7 /* mask to compute a tab stop position */ #define ESC '\33' /* escape */ #define O_NOCTTY 00400 /* from , or cc will choke */ #define O_NONBLOCK 04000 struct tty; typedef _PROTOTYPE( int (*devfun_t), (struct tty *tp, int try_only) ); typedef _PROTOTYPE( void (*devfunarg_t), (struct tty *tp, int c) ); typedef struct tty { int tty_events; /* set when TTY should inspect this line */ int tty_index; /* index into TTY table */ int tty_minor; /* device minor number */ /* Input queue. Typed characters are stored here until read by a program. */ u16_t *tty_inhead; /* pointer to place where next char goes */ u16_t *tty_intail; /* pointer to next char to be given to prog */ int tty_incount; /* # chars in the input queue */ int tty_eotct; /* number of "line breaks" in input queue */ devfun_t tty_devread; /* routine to read from low level buffers */ devfun_t tty_icancel; /* cancel any device input */ int tty_min; /* minimum requested #chars in input queue */ timer_t tty_tmr; /* the timer for this tty */ /* Output section. */ devfun_t tty_devwrite; /* routine to start actual device output */ devfunarg_t tty_echo; /* routine to echo characters input */ devfun_t tty_ocancel; /* cancel any ongoing device output */ devfun_t tty_break; /* let the device send a break */ /* Terminal parameters and status. */ int tty_position; /* current position on the screen for echoing */ char tty_reprint; /* 1 when echoed input messed up, else 0 */ char tty_escaped; /* 1 when LNEXT (^V) just seen, else 0 */ char tty_inhibited; /* 1 when STOP (^S) just seen (stops output) */ int tty_pgrp; /* slot number of controlling process */ char tty_openct; /* count of number of opens of this tty */ /* Information about incomplete I/O requests is stored here. */ int tty_inrepcode; /* reply code, TASK_REPLY or REVIVE */ char tty_inrevived; /* set to 1 if revive callback is pending */ int tty_incaller; /* process that made the call (usually FS) */ int tty_inproc; /* process that wants to read from tty */ vir_bytes tty_in_vir_g; /* address or grant where data is to go */ vir_bytes tty_in_vir_offset; /* offset into grant */ int tty_in_safe; /* nonzero: safecopies (in_vir is grantid) */ int tty_inleft; /* how many chars are still needed */ int tty_incum; /* # chars input so far */ int tty_outrepcode; /* reply code, TASK_REPLY or REVIVE */ int tty_outrevived; /* set to 1 if revive callback is pending */ int tty_outcaller; /* process that made the call (usually FS) */ int tty_outproc; /* process that wants to write to tty */ vir_bytes tty_out_vir_g; /* address or grant where data comes from */ vir_bytes tty_out_vir_offset; /* offset into grant */ int tty_out_safe; /* nonzero: safecopies (out_vir is grantid) */ int tty_outleft; /* # chars yet to be output */ int tty_outcum; /* # chars output so far */ int tty_iocaller; /* process that made the call (usually FS) */ int tty_iorevived; /* set to 1 if revive callback is pending */ int tty_ioproc; /* process that wants to do an ioctl */ int tty_iostatus; /* result */ int tty_ioreq; /* ioctl request code */ int tty_io_safe; /* safe copy mode? (iovir is grant id) */ vir_bytes tty_iovir_g; /* virtual address of ioctl buffer or grant */ /* select() data */ int tty_select_ops; /* which operations are interesting */ int tty_select_proc; /* which process wants notification */ /* Miscellaneous. */ devfun_t tty_ioctl; /* set line speed, etc. at the device level */ devfun_t tty_close; /* tell the device that the tty is closed */ void *tty_priv; /* pointer to per device private data */ struct termios tty_termios; /* terminal attributes */ struct winsize tty_winsize; /* window size (#lines and #columns) */ u16_t tty_inbuf[TTY_IN_BYTES];/* tty input buffer */ } tty_t; /* Memory allocated in tty.c, so extern here. */ extern tty_t tty_table[NR_CONS+NR_RS_LINES+NR_PTYS]; extern int ccurrent; /* currently visible console */ extern u32_t system_hz; /* system clock frequency */ extern unsigned long kbd_irq_set; extern unsigned long rs_irq_set; /* Values for the fields. */ #define NOT_ESCAPED 0 /* previous character is not LNEXT (^V) */ #define ESCAPED 1 /* previous character was LNEXT (^V) */ #define RUNNING 0 /* no STOP (^S) has been typed to stop output */ #define STOPPED 1 /* STOP (^S) has been typed to stop output */ /* Fields and flags on characters in the input queue. */ #define IN_CHAR 0x00FF /* low 8 bits are the character itself */ #define IN_LEN 0x0F00 /* length of char if it has been echoed */ #define IN_LSHIFT 8 /* length = (c & IN_LEN) >> IN_LSHIFT */ #define IN_EOT 0x1000 /* char is a line break (^D, LF) */ #define IN_EOF 0x2000 /* char is EOF (^D), do not return to user */ #define IN_ESC 0x4000 /* escaped by LNEXT (^V), no interpretation */ /* Times and timeouts. */ #define force_timeout() ((void) (0)) /* Memory allocated in tty.c, so extern here. */ extern timer_t *tty_timers; /* queue of TTY timers */ extern clock_t tty_next_timeout; /* next TTY timeout */ /* Number of elements and limit of a buffer. */ #define buflen(buf) (sizeof(buf) / sizeof((buf)[0])) #define bufend(buf) ((buf) + buflen(buf)) /* Memory allocated in tty.c, so extern here. */ extern struct machine machine; /* machine information (a.o.: pc_at, ega) */ /* The tty outputs diagnostic messages in a circular buffer. */ extern struct kmessages kmess; /* Function prototypes for TTY driver. */ /* tty.c */ _PROTOTYPE( void handle_events, (struct tty *tp) ); _PROTOTYPE( void sigchar, (struct tty *tp, int sig, int mayflush) ); _PROTOTYPE( void tty_task, (void) ); _PROTOTYPE( int in_process, (struct tty *tp, char *buf, int count) ); _PROTOTYPE( void out_process, (struct tty *tp, char *bstart, char *bpos, char *bend, int *icount, int *ocount) ); _PROTOTYPE( void tty_wakeup, (clock_t now) ); #define tty_reply(c, r, p, s) tty_reply_f(__FILE__, __LINE__, (c), (r), (p), (s)) _PROTOTYPE( void tty_reply_f, (char *f, int l, int code, int replyee, int proc_nr, int status) ); _PROTOTYPE( int select_try, (struct tty *tp, int ops) ); _PROTOTYPE( int select_retry, (struct tty *tp) ); /* rs232.c */ _PROTOTYPE( void rs_init, (struct tty *tp) ); _PROTOTYPE( void rs_interrupt, (message *m) ); #if (CHIP == INTEL) /* console.c */ _PROTOTYPE( void kputc, (int c) ); _PROTOTYPE( void cons_stop, (void) ); _PROTOTYPE( void do_new_kmess, (message *m) ); _PROTOTYPE( void do_diagnostics, (message *m, int safe) ); _PROTOTYPE( void do_get_kmess, (message *m) ); _PROTOTYPE( void do_get_kmess_s, (message *m) ); _PROTOTYPE( void scr_init, (struct tty *tp) ); _PROTOTYPE( void toggle_scroll, (void) ); _PROTOTYPE( int con_loadfont, (message *m) ); _PROTOTYPE( void select_console, (int cons_line) ); _PROTOTYPE( void beep_x, ( unsigned freq, clock_t dur) ); _PROTOTYPE( void do_video, (message *m) ); /* keyboard.c */ _PROTOTYPE( void kb_init, (struct tty *tp) ); _PROTOTYPE( void kb_init_once, (void) ); _PROTOTYPE( int kbd_loadmap, (message *m, int safe) ); _PROTOTYPE( void do_fkey_ctl, (message *m) ); _PROTOTYPE( void kbd_interrupt, (message *m) ); _PROTOTYPE( void do_kbd, (message *m) ); _PROTOTYPE( void do_kbdaux, (message *m) ); _PROTOTYPE( int kbd_status, (message *m_ptr) ); /* pty.c */ _PROTOTYPE( void do_pty, (struct tty *tp, message *m_ptr) ); _PROTOTYPE( void pty_init, (struct tty *tp) ); _PROTOTYPE( void select_retry_pty, (struct tty *tp) ); _PROTOTYPE( int pty_status, (message *m_ptr) ); #endif /* (CHIP == INTEL) */