Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 #ifndef __ASM_ARM_TERMIOS_H
  2 #define __ASM_ARM_TERMIOS_H
  3 
  4 #include <asm/termbits.h>
  5 #include <asm/ioctls.h>
  6 
  7 struct winsize {
  8         unsigned short ws_row;
  9         unsigned short ws_col;
 10         unsigned short ws_xpixel;
 11         unsigned short ws_ypixel;
 12 };
 13 
 14 #define NCC 8
 15 struct termio {
 16         unsigned short c_iflag;         /* input mode flags */
 17         unsigned short c_oflag;         /* output mode flags */
 18         unsigned short c_cflag;         /* control mode flags */
 19         unsigned short c_lflag;         /* local mode flags */
 20         unsigned char c_line;           /* line discipline */
 21         unsigned char c_cc[NCC];        /* control characters */
 22 };
 23 
 24 #ifdef __KERNEL__
 25 /*      intr=^C         quit=^|         erase=del       kill=^U
 26         eof=^D          vtime=\0        vmin=\1         sxtc=\0
 27         start=^Q        stop=^S         susp=^Z         eol=\0
 28         reprint=^R      discard=^U      werase=^W       lnext=^V
 29         eol2=\0
 30 */
 31 #define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
 32 #endif
 33 
 34 /* modem lines */
 35 #define TIOCM_LE        0x001
 36 #define TIOCM_DTR       0x002
 37 #define TIOCM_RTS       0x004
 38 #define TIOCM_ST        0x008
 39 #define TIOCM_SR        0x010
 40 #define TIOCM_CTS       0x020
 41 #define TIOCM_CAR       0x040
 42 #define TIOCM_RNG       0x080
 43 #define TIOCM_DSR       0x100
 44 #define TIOCM_CD        TIOCM_CAR
 45 #define TIOCM_RI        TIOCM_RNG
 46 #define TIOCM_OUT1      0x2000
 47 #define TIOCM_OUT2      0x4000
 48 #define TIOCM_LOOP      0x8000
 49 
 50 /* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
 51 
 52 #ifdef __KERNEL__
 53 
 54 /*
 55  * Translate a "termio" structure into a "termios". Ugh.
 56  */
 57 #define SET_LOW_TERMIOS_BITS(termios, termio, x) {              \
 58         unsigned short __tmp;                                   \
 59         get_user(__tmp,&(termio)->x);                           \
 60         *(unsigned short *) &(termios)->x = __tmp;              \
 61 }
 62 
 63 #define user_termio_to_kernel_termios(termios, termio) \
 64 ({ \
 65         SET_LOW_TERMIOS_BITS(termios, termio, c_iflag); \
 66         SET_LOW_TERMIOS_BITS(termios, termio, c_oflag); \
 67         SET_LOW_TERMIOS_BITS(termios, termio, c_cflag); \
 68         SET_LOW_TERMIOS_BITS(termios, termio, c_lflag); \
 69         copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
 70 })
 71 
 72 /*
 73  * Translate a "termios" structure into a "termio". Ugh.
 74  */
 75 #define kernel_termios_to_user_termio(termio, termios) \
 76 ({ \
 77         put_user((termios)->c_iflag, &(termio)->c_iflag); \
 78         put_user((termios)->c_oflag, &(termio)->c_oflag); \
 79         put_user((termios)->c_cflag, &(termio)->c_cflag); \
 80         put_user((termios)->c_lflag, &(termio)->c_lflag); \
 81         put_user((termios)->c_line,  &(termio)->c_line); \
 82         copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
 83 })
 84 
 85 #define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios2))
 86 #define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios2))
 87 #define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios))
 88 #define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios))
 89 
 90 #endif  /* __KERNEL__ */
 91 
 92 #endif  /* __ASM_ARM_TERMIOS_H */
 93 
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