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