/*
* linux/atari/atakeyb.c
*
* Atari Keyboard driver for 680x0 Linux
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
/*
* Atari support by Robert de Vries
* enhanced by Bjoern Brauel and Roman Hodek
*/
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/keyboard.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/kd.h>
#include <linux/random.h>
#include <asm/atariints.h>
#include <asm/atarihw.h>
#include <asm/atarikb.h>
#include <asm/atari_mouse.h>
#include <asm/atari_joystick.h>
#include <asm/irq.h>
extern int do_poke_blanked_console;
extern void process_keycode (int);
extern int ovsc_switchmode;
unsigned char mach_keyboard_type;
static void atakeyb_rep( unsigned long ignore );
extern unsigned int keymap_count;
/* Hook for MIDI serial driver */
void (*atari_MIDI_interrupt_hook) (void);
/* Hook for mouse driver */
void (*atari_mouse_interrupt_hook) (char *);
#define ATAKEY_CAPS (58)
#define BREAK_MASK (0x80)
/*
* ++roman: The following changes were applied manually:
*
* - The Alt (= Meta) key works in combination with Shift and
* Control, e.g. Alt+Shift+a sends Meta-A (0xc1), Alt+Control+A sends
* Meta-Ctrl-A (0x81) ...
*
* - The parentheses on the keypad send '(' and ')' with all
* modifiers (as would do e.g. keypad '+'), but they cannot be used as
* application keys (i.e. sending Esc O c).
*
* - HELP and UNDO are mapped to be F21 and F24, resp, that send the
* codes "\E[M" and "\E[P". (This is better than the old mapping to
* F11 and F12, because these codes are on Shift+F1/2 anyway.) This
* way, applications that allow their own keyboard mappings
* (e.g. tcsh, X Windows) can be configured to use them in the way
* the label suggests (providing help or undoing).
*
* - Console switching is done with Alt+Fx (consoles 1..10) and
* Shift+Alt+Fx (consoles 11..20).
*
* - The misc. special function implemented in the kernel are mapped
* to the following key combinations:
*
* ClrHome -> Home/Find
* Shift + ClrHome -> End/Select
* Shift + Up -> Page Up
* Shift + Down -> Page Down
* Alt + Help -> show system status
* Shift + Help -> show memory info
* Ctrl + Help -> show registers
* Ctrl + Alt + Del -> Reboot
* Alt + Undo -> switch to last console
* Shift + Undo -> send interrupt
* Alt + Insert -> stop/start output (same as ^S/^Q)
* Alt + Up -> Scroll back console (if implemented)
* Alt + Down -> Scroll forward console (if implemented)
* Alt + CapsLock -> NumLock
*
*/
static u_short ataplain_map[NR_KEYS] = {
0xf200, 0xf01b, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036,
0xf037, 0xf038, 0xf039, 0xf030, 0xf02d, 0xf03d, 0xf008, 0xf009,
0xfb71, 0xfb77, 0xfb65, 0xfb72, 0xfb74, 0xfb79, 0xfb75, 0xfb69,
0xfb6f, 0xfb70, 0xf05b, 0xf05d, 0xf201, 0xf702, 0xfb61, 0xfb73,
0xfb64, 0xfb66, 0xfb67, 0xfb68, 0xfb6a, 0xfb6b, 0xfb6c, 0xf03b,
0xf027, 0xf060, 0xf700, 0xf05c, 0xfb7a, 0xfb78, 0xfb63, 0xfb76,
0xfb62, 0xfb6e, 0xfb6d, 0xf02c, 0xf02e, 0xf02f, 0xf700, 0xf200,
0xf703, 0xf020, 0xf207, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104,
0xf105, 0xf106, 0xf107, 0xf108, 0xf109, 0xf200, 0xf200, 0xf114,
0xf603, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf600, 0xf200, 0xf115, 0xf07f, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf121, 0xf11b, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf307,
0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
static u_short atashift_map[NR_KEYS] = {
0xf200, 0xf01b, 0xf021, 0xf040, 0xf023, 0xf024, 0xf025, 0xf05e,
0xf026, 0xf02a, 0xf028, 0xf029, 0xf05f, 0xf02b, 0xf008, 0xf009,
0xfb51, 0xfb57, 0xfb45, 0xfb52, 0xfb54, 0xfb59, 0xfb55, 0xfb49,
0xfb4f, 0xfb50, 0xf07b, 0xf07d, 0xf201, 0xf702, 0xfb41, 0xfb53,
0xfb44, 0xfb46, 0xfb47, 0xfb48, 0xfb4a, 0xfb4b, 0xfb4c, 0xf03a,
0xf022, 0xf07e, 0xf700, 0xf07c, 0xfb5a, 0xfb58, 0xfb43, 0xfb56,
0xfb42, 0xfb4e, 0xfb4d, 0xf03c, 0xf03e, 0xf03f, 0xf700, 0xf200,
0xf703, 0xf020, 0xf207, 0xf10a, 0xf10b, 0xf10c, 0xf10d, 0xf10e,
0xf10f, 0xf110, 0xf111, 0xf112, 0xf113, 0xf200, 0xf200, 0xf117,
0xf118, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf119, 0xf200, 0xf115, 0xf07f, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf205, 0xf203, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf307,
0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
static u_short atactrl_map[NR_KEYS] = {
0xf200, 0xf200, 0xf200, 0xf000, 0xf01b, 0xf01c, 0xf01d, 0xf01e,
0xf01f, 0xf07f, 0xf200, 0xf200, 0xf07f, 0xf200, 0xf008, 0xf200,
0xf011, 0xf017, 0xf005, 0xf012, 0xf014, 0xf019, 0xf015, 0xf009,
0xf00f, 0xf010, 0xf01b, 0xf01d, 0xf201, 0xf702, 0xf001, 0xf013,
0xf004, 0xf006, 0xf007, 0xf008, 0xf00a, 0xf00b, 0xf00c, 0xf200,
0xf007, 0xf000, 0xf700, 0xf01c, 0xf01a, 0xf018, 0xf003, 0xf016,
0xf002, 0xf00e, 0xf00d, 0xf200, 0xf200, 0xf07f, 0xf700, 0xf200,
0xf703, 0xf000, 0xf207, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104,
0xf105, 0xf106, 0xf107, 0xf108, 0xf109, 0xf200, 0xf200, 0xf114,
0xf603, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf600, 0xf200, 0xf115, 0xf07f, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf121, 0xf202, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf307,
0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
static u_short atashift_ctrl_map[NR_KEYS] = {
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf008, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf201, 0xf702, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf700, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf700, 0xf200,
0xf703, 0xf200, 0xf207, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf117,
0xf603, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf600, 0xf200, 0xf115, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf307,
0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
static u_short ataalt_map[NR_KEYS] = {
0xf200, 0xf81b, 0xf831, 0xf832, 0xf833, 0xf834, 0xf835, 0xf836,
0xf837, 0xf838, 0xf839, 0xf830, 0xf82d, 0xf83d, 0xf808, 0xf809,
0xf871, 0xf877, 0xf865, 0xf872, 0xf874, 0xf879, 0xf875, 0xf869,
0xf86f, 0xf870, 0xf85b, 0xf85d, 0xf80d, 0xf702, 0xf861, 0xf873,
0xf864, 0xf866, 0xf867, 0xf868, 0xf86a, 0xf86b, 0xf86c, 0xf83b,
0xf827, 0xf860, 0xf700, 0xf85c, 0xf87a, 0xf878, 0xf863, 0xf876,
0xf862, 0xf86e, 0xf86d, 0xf82c, 0xf82e, 0xf82f, 0xf700, 0xf200,
0xf703, 0xf820, 0xf208, 0xf500, 0xf501, 0xf502, 0xf503, 0xf504,
0xf505, 0xf506, 0xf507, 0xf508, 0xf509, 0xf200, 0xf200, 0xf114,
0xf20b, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf20a, 0xf200, 0xf209, 0xf87f, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf206, 0xf204, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf907,
0xf908, 0xf909, 0xf904, 0xf905, 0xf906, 0xf901, 0xf902, 0xf903,
0xf900, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
static u_short atashift_alt_map[NR_KEYS] = {
0xf200, 0xf81b, 0xf821, 0xf840, 0xf823, 0xf824, 0xf825, 0xf85e,
0xf826, 0xf82a, 0xf828, 0xf829, 0xf85f, 0xf82b, 0xf808, 0xf809,
0xf851, 0xf857, 0xf845, 0xf852, 0xf854, 0xf859, 0xf855, 0xf849,
0xf84f, 0xf850, 0xf87b, 0xf87d, 0xf201, 0xf702, 0xf841, 0xf853,
0xf844, 0xf846, 0xf847, 0xf848, 0xf84a, 0xf84b, 0xf84c, 0xf83a,
0xf822, 0xf87e, 0xf700, 0xf87c, 0xf85a, 0xf858, 0xf843, 0xf856,
0xf842, 0xf84e, 0xf84d, 0xf83c, 0xf83e, 0xf83f, 0xf700, 0xf200,
0xf703, 0xf820, 0xf207, 0xf50a, 0xf50b, 0xf50c, 0xf50d, 0xf50e,
0xf50f, 0xf510, 0xf511, 0xf512, 0xf513, 0xf200, 0xf200, 0xf117,
0xf118, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf119, 0xf200, 0xf115, 0xf87f, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf307,
0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
static u_short atactrl_alt_map[NR_KEYS] = {
0xf200, 0xf200, 0xf200, 0xf800, 0xf81b, 0xf81c, 0xf81d, 0xf81e,
0xf81f, 0xf87f, 0xf200, 0xf200, 0xf87f, 0xf200, 0xf808, 0xf200,
0xf811, 0xf817, 0xf805, 0xf812, 0xf814, 0xf819, 0xf815, 0xf809,
0xf80f, 0xf810, 0xf81b, 0xf81d, 0xf201, 0xf702, 0xf801, 0xf813,
0xf804, 0xf806, 0xf807, 0xf808, 0xf80a, 0xf80b, 0xf80c, 0xf200,
0xf807, 0xf800, 0xf700, 0xf81c, 0xf81a, 0xf818, 0xf803, 0xf816,
0xf802, 0xf80e, 0xf80d, 0xf200, 0xf200, 0xf87f, 0xf700, 0xf200,
0xf703, 0xf800, 0xf207, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104,
0xf105, 0xf106, 0xf107, 0xf108, 0xf109, 0xf200, 0xf200, 0xf114,
0xf603, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf600, 0xf200, 0xf115, 0xf07f, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf121, 0xf202, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf307,
0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
static u_short atashift_ctrl_alt_map[NR_KEYS] = {
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf808, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf201, 0xf702, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf700, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf700, 0xf200,
0xf703, 0xf200, 0xf207, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf117,
0xf603, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200,
0xf600, 0xf200, 0xf115, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf028, 0xf029, 0xf30d, 0xf30c, 0xf307,
0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303,
0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200
};
typedef enum kb_state_t
{
KEYBOARD, AMOUSE, RMOUSE, JOYSTICK, CLOCK, RESYNC
} KB_STATE_T;
#define IS_SYNC_CODE(sc) ((sc) >= 0x04 && (sc) <= 0xfb)
typedef struct keyboard_state
{
unsigned char buf[6];
int len;
KB_STATE_T state;
} KEYBOARD_STATE;
KEYBOARD_STATE kb_state;
#define DEFAULT_KEYB_REP_DELAY (HZ/4)
#define DEFAULT_KEYB_REP_RATE (HZ/25)
/* These could be settable by some ioctl() in future... */
static unsigned int key_repeat_delay = DEFAULT_KEYB_REP_DELAY;
static unsigned int key_repeat_rate = DEFAULT_KEYB_REP_RATE;
static unsigned char rep_scancode;
static struct timer_list atakeyb_rep_timer = { NULL, NULL, 0, 0, atakeyb_rep };
extern struct pt_regs *pt_regs;
static void atakeyb_rep( unsigned long ignore )
{
pt_regs = NULL;
/* Disable keyboard it for the time we call process_keycode(), else a race
* in the keyboard tty queue may happen */
atari_disable_irq( IRQ_MFP_ACIA );
del_timer( &atakeyb_rep_timer );
/* A keyboard int may have come in before we disabled the irq, so
* double-check whether rep_scancode is still != 0 */
if (rep_scancode) {
atakeyb_rep_timer.expires = jiffies + key_repeat_rate;
atakeyb_rep_timer.prev = atakeyb_rep_timer.next = NULL;
add_timer( &atakeyb_rep_timer );
process_keycode (rep_scancode);
}
atari_enable_irq( IRQ_MFP_ACIA );
}
/* ++roman: If a keyboard overrun happened, we can't tell in general how much
* bytes have been lost and in which state of the packet structure we are now.
* This usually causes keyboards bytes to be interpreted as mouse movements
* and vice versa, which is very annoying. It seems better to throw away some
* bytes (that are usually mouse bytes) than to misinterpret them. Therefor I
* introduced the RESYNC state for IKBD data. In this state, the bytes up to
* one that really looks like a key event (0x04..0xf2) or the start of a mouse
* packet (0xf8..0xfb) are thrown away, but at most 2 bytes. This at least
* speeds up the resynchronization of the event structure, even if maybe a
* mouse movement is lost. However, nothing is perfect. For bytes 0x01..0x03,
* it's really hard to decide whether they're mouse or keyboard bytes. Since
* overruns usually occur when moving the Atari mouse rapidly, they're seen as
* mouse bytes here. If this is wrong, only a make code of the keyboard gets
* lost, which isn't too bad. Loosing a break code would be disastrous,
* because then the keyboard repeat strikes...
*/
static void keyboard_interrupt(int irq, struct pt_regs *fp, void *dummy)
{
u_char acia_stat;
int scancode;
int break_flag;
/* save frame for register dump */
pt_regs = (struct pt_regs *)fp;
repeat:
if (acia.mid_ctrl & ACIA_IRQ)
if (atari_MIDI_interrupt_hook)
atari_MIDI_interrupt_hook();
acia_stat = acia.key_ctrl;
/* check out if the interrupt came from this ACIA */
if (!((acia_stat | acia.mid_ctrl) & ACIA_IRQ))
return;
if (acia_stat & ACIA_OVRN)
{
/* a very fast typist or a slow system, give a warning */
/* ...happens often if interrupts were disabled for too long */
printk( "Keyboard overrun\n" );
scancode = acia.key_data;
/* Turn off autorepeating in case a break code has been lost */
del_timer( &atakeyb_rep_timer );
rep_scancode = 0;
if (IS_SYNC_CODE(scancode)) {
/* This code seem already to be the start of a new packet or a
* single keycode */
kb_state.state = KEYBOARD;
goto interpret_scancode;
}
else {
/* Go to RESYNC state and skip this byte */
kb_state.state = RESYNC;
kb_state.len = 1; /* skip max. 1 another byte */
goto repeat;
}
}
if (acia_stat & ACIA_RDRF) /* received a character */
{
scancode = acia.key_data; /* get it or reset the ACIA, I'll get it! */
interpret_scancode:
switch (kb_state.state)
{
case KEYBOARD:
switch (scancode)
{
case 0xF7:
kb_state.state = AMOUSE;
kb_state.len = 0;
break;
case 0xF8:
case 0xF9:
case 0xFA:
case 0xFB:
kb_state.state = RMOUSE;
kb_state.len = 1;
kb_state.buf[0] = scancode;
break;
case 0xFC:
kb_state.state = CLOCK;
kb_state.len = 0;
break;
case 0xFE:
case 0xFF:
kb_state.state = JOYSTICK;
kb_state.len = 1;
kb_state.buf[0] = scancode;
break;
default:
break_flag = scancode & BREAK_MASK;
scancode &= ~BREAK_MASK;
if (break_flag) {
del_timer( &atakeyb_rep_timer );
rep_scancode = 0;
}
else {
del_timer( &atakeyb_rep_timer );
rep_scancode = scancode;
atakeyb_rep_timer.expires = jiffies + key_repeat_delay;
atakeyb_rep_timer.prev = atakeyb_rep_timer.next = NULL;
add_timer( &atakeyb_rep_timer );
}
process_keycode( break_flag | scancode );
do_poke_blanked_console = 1;
mark_bh(CONSOLE_BH);
add_keyboard_randomness(scancode);
break;
}
break;
case AMOUSE:
kb_state.buf[kb_state.len++] = scancode;
if (kb_state.len == 5)
{
kb_state.state = KEYBOARD;
/* not yet used */
/* wake up someone waiting for this */
}
break;
case RMOUSE:
kb_state.buf[kb_state.len++] = scancode;
if (kb_state.len == 3)
{
kb_state.state = KEYBOARD;
if (atari_mouse_interrupt_hook)
atari_mouse_interrupt_hook(kb_state.buf);
}
break;
case JOYSTICK:
kb_state.buf[1] = scancode;
kb_state.state = KEYBOARD;
atari_joystick_interrupt(kb_state.buf);
break;
case CLOCK:
kb_state.buf[kb_state.len++] = scancode;
if (kb_state.len == 6)
{
kb_state.state = KEYBOARD;
/* wake up someone waiting for this.
But will this ever be used, as Linux keeps its own time.
Perhaps for synchronization purposes? */
/* wake_up_interruptible(&clock_wait); */
}
break;
case RESYNC:
if (kb_state.len <= 0 || IS_SYNC_CODE(scancode)) {
kb_state.state = KEYBOARD;
goto interpret_scancode;
}
kb_state.len--;
break;
}
}
#ifdef KEYB_WRITE_INTERRUPT
if (acia_stat & ACIA_TDRE) /* transmit of character is finished */
{
if (kb_state.buf)
{
acia.key_data = *kb_state.buf++;
kb_state.len--;
if (kb_state.len == 0)
{
kb_state.buf = NULL;
if (!kb_state.kernel_mode)
/* unblock something */;
}
}
}
#endif
#if 0
if (acia_stat & ACIA_CTS)
/* cannot happen */;
#endif
if (acia_stat & (ACIA_FE | ACIA_PE))
{
printk("Error in keyboard communication\n");
}
/* process_keycode() can take a lot of time, so check again if
* some character arrived
*/
goto repeat;
}
#ifdef KEYB_WRITE_INTERRUPT
void ikbd_write(const char *str, int len)
{
u_char acia_stat;
if (kb_stat.buf)
/* wait */;
acia_stat = acia.key_ctrl;
if (acia_stat & ACIA_TDRE)
{
if (len != 1)
{
kb_stat.buf = str + 1;
kb_stat.len = len - 1;
}
acia.key_data = *str;
/* poll */
}
}
#else
/*
* I write to the keyboard without using interrupts, I poll instead.
* This takes for the maximum length string allowed (7) at 7812.5 baud
* 8 data 1 start 1 stop bit: 9.0 ms
* If this takes too long for normal operation, interrupt driven writing
* is the solution. (I made a feeble attempt in that direction but I
* kept it simple for now.)
*/
void ikbd_write(const char *str, int len)
{
u_char acia_stat;
if ((len < 1) || (len > 7))
panic("ikbd: maximum string length exceeded");
while (len)
{
acia_stat = acia.key_ctrl;
if (acia_stat & ACIA_TDRE)
{
acia.key_data = *str++;
len--;
}
}
}
#endif
/* Reset (without touching the clock) */
void ikbd_reset(void)
{
static const char cmd[2] = { 0x80, 0x01 };
ikbd_write(cmd, 2);
/* if all's well code 0xF1 is returned, else the break codes of
all keys making contact */
}
/* Set mouse button action */
void ikbd_mouse_button_action(int mode)
{
char cmd[2] = { 0x07, mode };
ikbd_write(cmd, 2);
}
/* Set relative mouse position reporting */
void ikbd_mouse_rel_pos(void)
{
static const char cmd[1] = { 0x08 };
ikbd_write(cmd, 1);
}
/* Set absolute mouse position reporting */
void ikbd_mouse_abs_pos(int xmax, int ymax)
{
char cmd[5] = { 0x09, xmax>>8, xmax&0xFF, ymax>>8, ymax&0xFF };
ikbd_write(cmd, 5);
}
/* Set mouse keycode mode */
void ikbd_mouse_kbd_mode(int dx, int dy)
{
char cmd[3] = { 0x0A, dx, dy };
ikbd_write(cmd, 3);
}
/* Set mouse threshold */
void ikbd_mouse_thresh(int x, int y)
{
char cmd[3] = { 0x0B, x, y };
ikbd_write(cmd, 3);
}
/* Set mouse scale */
void ikbd_mouse_scale(int x, int y)
{
char cmd[3] = { 0x0C, x, y };
ikbd_write(cmd, 3);
}
/* Interrogate mouse position */
void ikbd_mouse_pos_get(int *x, int *y)
{
static const char cmd[1] = { 0x0D };
ikbd_write(cmd, 1);
/* wait for returning bytes */
}
/* Load mouse position */
void ikbd_mouse_pos_set(int x, int y)
{
char cmd[6] = { 0x0E, 0x00, x>>8, x&0xFF, y>>8, y&0xFF };
ikbd_write(cmd, 6);
}
/* Set Y=0 at bottom */
void ikbd_mouse_y0_bot(void)
{
static const char cmd[1] = { 0x0F };
ikbd_write(cmd, 1);
}
/* Set Y=0 at top */
void ikbd_mouse_y0_top(void)
{
static const char cmd[1] = { 0x10 };
ikbd_write(cmd, 1);
}
/* Resume */
void ikbd_resume(void)
{
static const char cmd[1] = { 0x11 };
ikbd_write(cmd, 1);
}
/* Disable mouse */
void ikbd_mouse_disable(void)
{
static const char cmd[1] = { 0x12 };
ikbd_write(cmd, 1);
}
/* Pause output */
void ikbd_pause(void)
{
static const char cmd[1] = { 0x13 };
ikbd_write(cmd, 1);
}
/* Set joystick event reporting */
void ikbd_joystick_event_on(void)
{
static const char cmd[1] = { 0x14 };
ikbd_write(cmd, 1);
}
/* Set joystick interrogation mode */
void ikbd_joystick_event_off(void)
{
static const char cmd[1] = { 0x15 };
ikbd_write(cmd, 1);
}
/* Joystick interrogation */
void ikbd_joystick_get_state(void)
{
static const char cmd[1] = { 0x16 };
ikbd_write(cmd, 1);
}
#if 0
/* This disables all other ikbd activities !!!! */
/* Set joystick monitoring */
void ikbd_joystick_monitor(int rate)
{
static const char cmd[2] = { 0x17, rate };
ikbd_write(cmd, 2);
kb_state.state = JOYSTICK_MONITOR;
}
#endif
/* some joystick routines not in yet (0x18-0x19) */
/* Disable joysticks */
void ikbd_joystick_disable(void)
{
static const char cmd[1] = { 0x1A };
ikbd_write(cmd, 1);
}
/* Time-of-day clock set */
void ikbd_clock_set(int year, int month, int day, int hour, int minute, int second)
{
char cmd[7] = { 0x1B, year, month, day, hour, minute, second };
ikbd_write(cmd, 7);
}
/* Interrogate time-of-day clock */
void ikbd_clock_get(int *year, int *month, int *day, int *hour, int *minute, int second)
{
static const char cmd[1] = { 0x1C };
ikbd_write(cmd, 1);
}
/* Memory load */
void ikbd_mem_write(int address, int size, char *data)
{
panic("Attempt to write data into keyboard memory");
}
/* Memory read */
void ikbd_mem_read(int address, char data[6])
{
char cmd[3] = { 0x21, address>>8, address&0xFF };
ikbd_write(cmd, 3);
/* receive data and put it in data */
}
/* Controller execute */
void ikbd_exec(int address)
{
char cmd[3] = { 0x22, address>>8, address&0xFF };
ikbd_write(cmd, 3);
}
/* Status inquiries (0x87-0x9A) not yet implemented */
/* Set the state of the caps lock led. */
void atari_kbd_leds (unsigned int leds)
{
char cmd[6] = {32, 0, 4, 1, 254 + ((leds & 4) != 0), 0};
ikbd_write(cmd, 6);
}
/*
* The original code sometimes left the interrupt line of
* the ACIAs low forever. I hope, it is fixed now.
*
* Martin Rogge, 20 Aug 1995
*/
int atari_keyb_init(void)
{
/* setup key map */
key_maps[0] = ataplain_map;
key_maps[1] = atashift_map;
key_maps[2] = 0; /* ataaltgr_map */
key_maps[4] = atactrl_map;
key_maps[5] = atashift_ctrl_map;
key_maps[8] = ataalt_map;
key_maps[9] = atashift_alt_map;
key_maps[12] = atactrl_alt_map;
key_maps[13] = atashift_ctrl_alt_map;
memcpy (plain_map, ataplain_map, sizeof(plain_map));
keymap_count = 8;
/* say that we don't have an AltGr key */
mach_keyboard_type = KB_84;
kb_state.state = KEYBOARD;
kb_state.len = 0;
add_isr(IRQ_MFP_ACIA, keyboard_interrupt, IRQ_TYPE_SLOW, NULL,
"keyboard/mouse/MIDI");
atari_turnoff_irq(IRQ_MFP_ACIA);
do {
acia.key_ctrl = ACIA_RESET; /* reset ACIA */
(void)acia.key_ctrl;
(void)acia.key_data;
acia.mid_ctrl = ACIA_RESET; /* reset other ACIA */
(void)acia.mid_ctrl;
(void)acia.mid_data;
/* divide 500kHz by 64 gives 7812.5 baud */
/* 8 data no parity 1 start 1 stop bit */
/* receive interrupt enabled */
#ifdef KEYB_WRITE_INTERRUPT
/* RTS low, transmit interrupt enabled */
if (ovsc_switchmode == 1)
acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RHTIE|ACIA_RIE);
/* switch on OverScan via keyboard ACIA */
else
acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RLTIE|ACIA_RIE);
#else
/* RTS low, transmit interrupt disabled */
if (ovsc_switchmode == 1)
acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RHTID|ACIA_RIE);
else
acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RLTID|ACIA_RIE);
#endif
acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S;
}
/* make sure the interrupt line is up */
while ((mfp.par_dt_reg & 0x10) == 0);
/* enable ACIA Interrupts */
mfp.active_edge &= ~0x10;
atari_turnon_irq(IRQ_MFP_ACIA);
ikbd_reset();
ikbd_mouse_disable();
ikbd_joystick_disable();
atari_joystick_init();
return 0;
}
int atari_kbdrate( struct kbd_repeat *k )
{
if (k->delay > 0) {
/* convert from msec to jiffies */
key_repeat_delay = (k->delay * HZ + 500) / 1000;
if (key_repeat_delay < 1)
key_repeat_delay = 1;
}
if (k->rate > 0) {
key_repeat_rate = (k->rate * HZ + 500) / 1000;
if (key_repeat_rate < 1)
key_repeat_rate = 1;
}
k->delay = key_repeat_delay * 1000 / HZ;
k->rate = key_repeat_rate * 1000 / HZ;
return( 0 );
}
