1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef _SPARC_TERMIOS_H
  3#define _SPARC_TERMIOS_H
  4
  5#include <uapi/asm/termios.h>
  6
  7
  8/*
  9 * c_cc characters in the termio structure.  Oh, how I love being
 10 * backwardly compatible.  Notice that character 4 and 5 are
 11 * interpreted differently depending on whether ICANON is set in
 12 * c_lflag.  If it's set, they are used as _VEOF and _VEOL, otherwise
 13 * as _VMIN and V_TIME.  This is for compatibility with OSF/1 (which
 14 * is compatible with sysV)...
 15 */
 16#define _VMIN	4
 17#define _VTIME	5
 18
 19/*	intr=^C		quit=^\		erase=del	kill=^U
 20	eof=^D		eol=\0		eol2=\0		sxtc=\0
 21	start=^Q	stop=^S		susp=^Z		dsusp=^Y
 22	reprint=^R	discard=^U	werase=^W	lnext=^V
 23	vmin=\1         vtime=\0
 24*/
 25#define INIT_C_CC "\003\034\177\025\004\000\000\000\021\023\032\031\022\025\027\026\001"
 26
 27/*
 28 * Translate a "termio" structure into a "termios". Ugh.
 29 */
 30#define user_termio_to_kernel_termios(termios, termio) \
 31({ \
 32	unsigned short tmp; \
 33	int err; \
 34	err = get_user(tmp, &(termio)->c_iflag); \
 35	(termios)->c_iflag = (0xffff0000 & ((termios)->c_iflag)) | tmp; \
 36	err |= get_user(tmp, &(termio)->c_oflag); \
 37	(termios)->c_oflag = (0xffff0000 & ((termios)->c_oflag)) | tmp; \
 38	err |= get_user(tmp, &(termio)->c_cflag); \
 39	(termios)->c_cflag = (0xffff0000 & ((termios)->c_cflag)) | tmp; \
 40	err |= get_user(tmp, &(termio)->c_lflag); \
 41	(termios)->c_lflag = (0xffff0000 & ((termios)->c_lflag)) | tmp; \
 42	err |= copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
 43	err; \
 44})
 45
 46/*
 47 * Translate a "termios" structure into a "termio". Ugh.
 48 *
 49 * Note the "fun" _VMIN overloading.
 50 */
 51#define kernel_termios_to_user_termio(termio, termios) \
 52({ \
 53	int err; \
 54	err  = put_user((termios)->c_iflag, &(termio)->c_iflag); \
 55	err |= put_user((termios)->c_oflag, &(termio)->c_oflag); \
 56	err |= put_user((termios)->c_cflag, &(termio)->c_cflag); \
 57	err |= put_user((termios)->c_lflag, &(termio)->c_lflag); \
 58	err |= put_user((termios)->c_line,  &(termio)->c_line); \
 59	err |= copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
 60	if (!((termios)->c_lflag & ICANON)) { \
 61		err |= put_user((termios)->c_cc[VMIN], &(termio)->c_cc[_VMIN]); \
 62		err |= put_user((termios)->c_cc[VTIME], &(termio)->c_cc[_VTIME]); \
 63	} \
 64	err; \
 65})
 66
 67#define user_termios_to_kernel_termios(k, u) \
 68({ \
 69	int err; \
 70	err  = get_user((k)->c_iflag, &(u)->c_iflag); \
 71	err |= get_user((k)->c_oflag, &(u)->c_oflag); \
 72	err |= get_user((k)->c_cflag, &(u)->c_cflag); \
 73	err |= get_user((k)->c_lflag, &(u)->c_lflag); \
 74	err |= get_user((k)->c_line,  &(u)->c_line); \
 75	err |= copy_from_user((k)->c_cc, (u)->c_cc, NCCS); \
 76	if ((k)->c_lflag & ICANON) { \
 77		err |= get_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
 78		err |= get_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
 79	} else { \
 80		err |= get_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
 81		err |= get_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
 82	} \
 83	err |= get_user((k)->c_ispeed,  &(u)->c_ispeed); \
 84	err |= get_user((k)->c_ospeed,  &(u)->c_ospeed); \
 85	err; \
 86})
 87
 88#define kernel_termios_to_user_termios(u, k) \
 89({ \
 90	int err; \
 91	err  = put_user((k)->c_iflag, &(u)->c_iflag); \
 92	err |= put_user((k)->c_oflag, &(u)->c_oflag); \
 93	err |= put_user((k)->c_cflag, &(u)->c_cflag); \
 94	err |= put_user((k)->c_lflag, &(u)->c_lflag); \
 95	err |= put_user((k)->c_line, &(u)->c_line); \
 96	err |= copy_to_user((u)->c_cc, (k)->c_cc, NCCS); \
 97	if (!((k)->c_lflag & ICANON)) { \
 98		err |= put_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
 99		err |= put_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
100	} else { \
101		err |= put_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
102		err |= put_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
103	} \
104	err |= put_user((k)->c_ispeed, &(u)->c_ispeed); \
105	err |= put_user((k)->c_ospeed, &(u)->c_ospeed); \
106	err; \
107})
108
109#define user_termios_to_kernel_termios_1(k, u) \
110({ \
111	int err; \
112	err  = get_user((k)->c_iflag, &(u)->c_iflag); \
113	err |= get_user((k)->c_oflag, &(u)->c_oflag); \
114	err |= get_user((k)->c_cflag, &(u)->c_cflag); \
115	err |= get_user((k)->c_lflag, &(u)->c_lflag); \
116	err |= get_user((k)->c_line,  &(u)->c_line); \
117	err |= copy_from_user((k)->c_cc, (u)->c_cc, NCCS); \
118	if ((k)->c_lflag & ICANON) { \
119		err |= get_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
120		err |= get_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
121	} else { \
122		err |= get_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
123		err |= get_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
124	} \
125	err; \
126})
127
128#define kernel_termios_to_user_termios_1(u, k) \
129({ \
130	int err; \
131	err  = put_user((k)->c_iflag, &(u)->c_iflag); \
132	err |= put_user((k)->c_oflag, &(u)->c_oflag); \
133	err |= put_user((k)->c_cflag, &(u)->c_cflag); \
134	err |= put_user((k)->c_lflag, &(u)->c_lflag); \
135	err |= put_user((k)->c_line, &(u)->c_line); \
136	err |= copy_to_user((u)->c_cc, (k)->c_cc, NCCS); \
137	if (!((k)->c_lflag & ICANON)) { \
138		err |= put_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
139		err |= put_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
140	} else { \
141		err |= put_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
142		err |= put_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
143	} \
144	err; \
145})
146
147#endif /* _SPARC_TERMIOS_H */