release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/include/asm/termios.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle
   7  * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
   8  */
   9 #ifndef _ASM_TERMIOS_H
  10 #define _ASM_TERMIOS_H
  11
  12 #include <linux/errno.h>
  13 #include <asm/termbits.h>
  14 #include <asm/ioctls.h>
  15
  16 struct sgttyb {
  17         char    sg_ispeed;
  18         char    sg_ospeed;
  19         char    sg_erase;
  20         char    sg_kill;
  21         int     sg_flags;       /* SGI special - int, not short */
  22 };
  23
  24 struct tchars {
  25         char    t_intrc;
  26         char    t_quitc;
  27         char    t_startc;
  28         char    t_stopc;
  29         char    t_eofc;
  30         char    t_brkc;
  31 };
  32
  33 struct ltchars {
  34         char    t_suspc;        /* stop process signal */
  35         char    t_dsuspc;       /* delayed stop process signal */
  36         char    t_rprntc;       /* reprint line */
  37         char    t_flushc;       /* flush output (toggles) */
  38         char    t_werasc;       /* word erase */
  39         char    t_lnextc;       /* literal next character */
  40 };
  41
  42 /* TIOCGSIZE, TIOCSSIZE not defined yet.  Only needed for SunOS source
  43    compatibility anyway ... */
  44
  45 struct winsize {
  46         unsigned short ws_row;
  47         unsigned short ws_col;
  48         unsigned short ws_xpixel;
  49         unsigned short ws_ypixel;
  50 };
  51
  52 #define NCC     8
  53 struct termio {
  54         unsigned short c_iflag;         /* input mode flags */
  55         unsigned short c_oflag;         /* output mode flags */
  56         unsigned short c_cflag;         /* control mode flags */
  57         unsigned short c_lflag;         /* local mode flags */
  58         char c_line;                    /* line discipline */
  59         unsigned char c_cc[NCCS];       /* control characters */
  60 };
  61
  62 #ifdef __KERNEL__
  63 #include <linux/module.h>
  64
  65 /*
  66  *      intr=^C         quit=^\         erase=del       kill=^U
  67  *      vmin=\1         vtime=\0        eol2=\0         swtc=\0
  68  *      start=^Q        stop=^S         susp=^Z         vdsusp=
  69  *      reprint=^R      discard=^U      werase=^W       lnext=^V
  70  *      eof=^D          eol=\0
  71  */
  72 #define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"
  73 #endif
  74
  75 /* modem lines */
  76 #define TIOCM_LE        0x001           /* line enable */
  77 #define TIOCM_DTR       0x002           /* data terminal ready */
  78 #define TIOCM_RTS       0x004           /* request to send */
  79 #define TIOCM_ST        0x010           /* secondary transmit */
  80 #define TIOCM_SR        0x020           /* secondary receive */
  81 #define TIOCM_CTS       0x040           /* clear to send */
  82 #define TIOCM_CAR       0x100           /* carrier detect */
  83 #define TIOCM_CD        TIOCM_CAR
  84 #define TIOCM_RNG       0x200           /* ring */
  85 #define TIOCM_RI        TIOCM_RNG
  86 #define TIOCM_DSR       0x400           /* data set ready */
  87 #define TIOCM_OUT1      0x2000
  88 #define TIOCM_OUT2      0x4000
  89 #define TIOCM_LOOP      0x8000
  90
  91 #ifdef __KERNEL__
  92
  93 #include <linux/string.h>
  94
  95 /*
  96  * Translate a "termio" structure into a "termios". Ugh.
  97  */
  98 static inline int user_termio_to_kernel_termios(struct ktermios *termios,
  99         struct termio __user *termio)
 100 {
 101         unsigned short iflag, oflag, cflag, lflag;
 102         unsigned int err;
 103
 104         if (!access_ok(VERIFY_READ, termio, sizeof(struct termio)))
 105                 return -EFAULT;
 106
 107         err = __get_user(iflag, &termio->c_iflag);
 108         termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag;
 109         err |=__get_user(oflag, &termio->c_oflag);
 110         termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag;
 111         err |=__get_user(cflag, &termio->c_cflag);
 112         termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag;
 113         err |=__get_user(lflag, &termio->c_lflag);
 114         termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag;
 115         err |=__get_user(termios->c_line, &termio->c_line);
 116         if (err)
 117                 return -EFAULT;
 118
 119         if (__copy_from_user(termios->c_cc, termio->c_cc, NCC))
 120                 return -EFAULT;
 121
 122         return 0;
 123 }
 124
 125 /*
 126  * Translate a "termios" structure into a "termio". Ugh.
 127  */
 128 static inline int kernel_termios_to_user_termio(struct termio __user *termio,
 129         struct ktermios *termios)
 130 {
 131         int err;
 132
 133         if (!access_ok(VERIFY_WRITE, termio, sizeof(struct termio)))
 134                 return -EFAULT;
 135
 136         err = __put_user(termios->c_iflag, &termio->c_iflag);
 137         err |= __put_user(termios->c_oflag, &termio->c_oflag);
 138         err |= __put_user(termios->c_cflag, &termio->c_cflag);
 139         err |= __put_user(termios->c_lflag, &termio->c_lflag);
 140         err |= __put_user(termios->c_line, &termio->c_line);
 141         if (err)
 142                 return -EFAULT;
 143
 144         if (__copy_to_user(termio->c_cc, termios->c_cc, NCC))
 145                 return -EFAULT;
 146
 147         return 0;
 148 }
 149
 150 static inline int user_termios_to_kernel_termios(struct ktermios __user *k,
 151         struct termios2 *u)
 152 {
 153         return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0;
 154 }
 155
 156 static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
 157         struct ktermios *k)
 158 {
 159         return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0;
 160 }
 161
 162 static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
 163         struct termios __user *u)
 164 {
 165         return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0;
 166 }
 167
 168 static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
 169         struct ktermios *k)
 170 {
 171         return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0;
 172 }
 173
 174 #endif /* defined(__KERNEL__) */
 175
 176 #endif /* _ASM_TERMIOS_H */