1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * ebcdic keycode functions for s390 console drivers
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright IBM Corp. 2003
6*4882a593Smuzhiyun * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/tty.h>
10*4882a593Smuzhiyun #include <linux/tty_flip.h>
11*4882a593Smuzhiyun #include <linux/keyboard.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #define NR_FN_HANDLER 20
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun struct kbd_data;
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun extern int ebc_funcbufsize, ebc_funcbufleft;
18*4882a593Smuzhiyun extern char *ebc_func_table[MAX_NR_FUNC];
19*4882a593Smuzhiyun extern char ebc_func_buf[];
20*4882a593Smuzhiyun extern char *ebc_funcbufptr;
21*4882a593Smuzhiyun extern unsigned int ebc_keymap_count;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun extern struct kbdiacruc ebc_accent_table[];
24*4882a593Smuzhiyun extern unsigned int ebc_accent_table_size;
25*4882a593Smuzhiyun extern unsigned short *ebc_key_maps[MAX_NR_KEYMAPS];
26*4882a593Smuzhiyun extern unsigned short ebc_plain_map[NR_KEYS];
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun typedef void (fn_handler_fn)(struct kbd_data *);
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun /*
31*4882a593Smuzhiyun * FIXME: explain key_maps tricks.
32*4882a593Smuzhiyun */
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun struct kbd_data {
35*4882a593Smuzhiyun struct tty_port *port;
36*4882a593Smuzhiyun unsigned short **key_maps;
37*4882a593Smuzhiyun char **func_table;
38*4882a593Smuzhiyun fn_handler_fn **fn_handler;
39*4882a593Smuzhiyun struct kbdiacruc *accent_table;
40*4882a593Smuzhiyun unsigned int accent_table_size;
41*4882a593Smuzhiyun unsigned int diacr;
42*4882a593Smuzhiyun unsigned short sysrq;
43*4882a593Smuzhiyun };
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun struct kbd_data *kbd_alloc(void);
46*4882a593Smuzhiyun void kbd_free(struct kbd_data *);
47*4882a593Smuzhiyun void kbd_ascebc(struct kbd_data *, unsigned char *);
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun void kbd_keycode(struct kbd_data *, unsigned int);
50*4882a593Smuzhiyun int kbd_ioctl(struct kbd_data *, unsigned int, unsigned long);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun /*
53*4882a593Smuzhiyun * Helper Functions.
54*4882a593Smuzhiyun */
55*4882a593Smuzhiyun static inline void
kbd_put_queue(struct tty_port * port,int ch)56*4882a593Smuzhiyun kbd_put_queue(struct tty_port *port, int ch)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun tty_insert_flip_char(port, ch, 0);
59*4882a593Smuzhiyun tty_flip_buffer_push(port);
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun static inline void
kbd_puts_queue(struct tty_port * port,char * cp)63*4882a593Smuzhiyun kbd_puts_queue(struct tty_port *port, char *cp)
64*4882a593Smuzhiyun {
65*4882a593Smuzhiyun while (*cp)
66*4882a593Smuzhiyun tty_insert_flip_char(port, *cp++, 0);
67*4882a593Smuzhiyun tty_flip_buffer_push(port);
68*4882a593Smuzhiyun }
69