WebSVN – HelenOS-historic – Blame – /uspace/trunk/kbd/arch/ia32/src/kbd.c

Rev	Author	Line No.	Line
1339	cejka	1	/*
		2	* Copyright (C) 2001-2004 Jakub Jermar
		3	* Copyright (C) 2006 Josef Cejka
		4	* All rights reserved.
		5	*
		6	* Redistribution and use in source and binary forms, with or without
		7	* modification, are permitted provided that the following conditions
		8	* are met:
		9	*
		10	* - Redistributions of source code must retain the above copyright
		11	* notice, this list of conditions and the following disclaimer.
		12	* - Redistributions in binary form must reproduce the above copyright
		13	* notice, this list of conditions and the following disclaimer in the
		14	* documentation and/or other materials provided with the distribution.
		15	* - The name of the author may not be used to endorse or promote products
		16	* derived from this software without specific prior written permission.
		17	*
		18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		28	*/
		29
		30	#include <arch/kbd.h>
1353	jermar	31	#include <ipc/ipc.h>
1339	cejka	32
		33	#define SPECIAL '?'
		34	#define KEY_RELEASE 0x80
		35
		36	/**
		37	* These codes read from i8042 data register are silently ignored.
		38	*/
		39	#define IGNORE_CODE 0x7f
		40
		41	#define PRESSED_SHIFT (1<<0)
		42	#define PRESSED_CAPSLOCK (1<<1)
		43	#define LOCKED_CAPSLOCK (1<<0)
		44
		45	/** Scancodes. */
		46	#define SC_ESC 0x01
		47	#define SC_BACKSPACE 0x0e
		48	#define SC_LSHIFT 0x2a
		49	#define SC_RSHIFT 0x36
		50	#define SC_CAPSLOCK 0x3a
		51	#define SC_SPEC_ESCAPE 0xe0
		52	#define SC_LEFTARR 0x4b
		53	#define SC_RIGHTARR 0x4d
		54	#define SC_UPARR 0x48
		55	#define SC_DOWNARR 0x50
		56	#define SC_DELETE 0x53
		57	#define SC_HOME 0x47
		58	#define SC_END 0x4f
		59
		60	static volatile int keyflags; /*< Tracking of multiple keypresses. /
		61	static volatile int lockflags; /*< Tracking of multiple keys lockings. /
		62
		63	/** Primary meaning of scancodes. */
		64	static char sc_primary_map[] = {
		65	SPECIAL, /* 0x00 */
		66	SPECIAL, /* 0x01 - Esc */
		67	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
		68	'\b', /* 0x0e - Backspace */
		69	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
		70	SPECIAL, /* 0x1d - LCtrl */
		71	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
		72	'`',
		73	SPECIAL, /* 0x2a - LShift */
		74	'\\',
		75	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
		76	SPECIAL, /* 0x36 - RShift */
		77	'*',
		78	SPECIAL, /* 0x38 - LAlt */
		79	' ',
		80	SPECIAL, /* 0x3a - CapsLock */
1451	cejka	81	0x3b, /* 0x3b - F1 */
		82	// SPECIAL, /* 0x3b - F1 */
		83	0x3c, /* 0x3c - F2 */
		84	// SPECIAL, /* 0x3c - F2 */
		85	0x3d, /* 0x3d - F3 */
		86	// SPECIAL, /* 0x3d - F3 */
		87	0x3e, /* 0x3e - F4 */
		88	// SPECIAL, /* 0x3e - F4 */
		89	// SPECIAL, /* 0x3f - F5 */
		90	0x3f, /* 0x3f - F5 */
		91	// SPECIAL, /* 0x40 - F6 */
		92	0x40, /* 0x40 - F6 */
		93	// SPECIAL, /* 0x41 - F7 */
		94	0x41, /* 0x41 - F7 */
		95	// SPECIAL, /* 0x42 - F8 */
		96	0x42, /* 0x42 - F8 */
		97	// SPECIAL, /* 0x43 - F9 */
		98	0x43, /* 0x43 - F9 */
		99	// SPECIAL, /* 0x44 - F10 */
		100	0x44, /* 0x44 - F10 */
1339	cejka	101	SPECIAL, /* 0x45 - NumLock */
		102	SPECIAL, /* 0x46 - ScrollLock */
		103	'7', '8', '9', '-',
		104	'4', '5', '6', '+',
		105	'1', '2', '3',
		106	'0', '.',
		107	SPECIAL, /* 0x54 - Alt-SysRq */
		108	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
		109	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
		110	SPECIAL, /* 0x57 - F11 */
		111	SPECIAL, /* 0x58 - F12 */
		112	SPECIAL, /* 0x59 */
		113	SPECIAL, /* 0x5a */
		114	SPECIAL, /* 0x5b */
		115	SPECIAL, /* 0x5c */
		116	SPECIAL, /* 0x5d */
		117	SPECIAL, /* 0x5e */
		118	SPECIAL, /* 0x5f */
		119	SPECIAL, /* 0x60 */
		120	SPECIAL, /* 0x61 */
		121	SPECIAL, /* 0x62 */
		122	SPECIAL, /* 0x63 */
		123	SPECIAL, /* 0x64 */
		124	SPECIAL, /* 0x65 */
		125	SPECIAL, /* 0x66 */
		126	SPECIAL, /* 0x67 */
		127	SPECIAL, /* 0x68 */
		128	SPECIAL, /* 0x69 */
		129	SPECIAL, /* 0x6a */
		130	SPECIAL, /* 0x6b */
		131	SPECIAL, /* 0x6c */
		132	SPECIAL, /* 0x6d */
		133	SPECIAL, /* 0x6e */
		134	SPECIAL, /* 0x6f */
		135	SPECIAL, /* 0x70 */
		136	SPECIAL, /* 0x71 */
		137	SPECIAL, /* 0x72 */
		138	SPECIAL, /* 0x73 */
		139	SPECIAL, /* 0x74 */
		140	SPECIAL, /* 0x75 */
		141	SPECIAL, /* 0x76 */
		142	SPECIAL, /* 0x77 */
		143	SPECIAL, /* 0x78 */
		144	SPECIAL, /* 0x79 */
		145	SPECIAL, /* 0x7a */
		146	SPECIAL, /* 0x7b */
		147	SPECIAL, /* 0x7c */
		148	SPECIAL, /* 0x7d */
		149	SPECIAL, /* 0x7e */
		150	SPECIAL, /* 0x7f */
		151	};
		152
		153	/** Secondary meaning of scancodes. */
		154	static char sc_secondary_map[] = {
		155	SPECIAL, /* 0x00 */
		156	SPECIAL, /* 0x01 - Esc */
		157	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
		158	SPECIAL, /* 0x0e - Backspace */
		159	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
		160	SPECIAL, /* 0x1d - LCtrl */
		161	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
		162	'~',
		163	SPECIAL, /* 0x2a - LShift */
		164	'\|',
		165	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
		166	SPECIAL, /* 0x36 - RShift */
		167	'*',
		168	SPECIAL, /* 0x38 - LAlt */
		169	' ',
		170	SPECIAL, /* 0x3a - CapsLock */
1451	cejka	171	0x3b, /* 0x3b - F1 */
		172	0x3c, /* 0x3c - F2 */
		173	0x3d, /* 0x3d - F3 */
		174	0x3e, /* 0x3e - F4 */
		175	0x3f, /* 0x3f - F5 */
		176	0x40, /* 0x40 - F6 */
		177	0x41, /* 0x41 - F7 */
		178	0x42, /* 0x42 - F8 */
		179	0x43, /* 0x43 - F9 */
		180	0x44, /* 0x44 - F10 */
		181	// SPECIAL, /* 0x3b - F1 */
		182	// SPECIAL, /* 0x3c - F2 */
		183	// SPECIAL, /* 0x3d - F3 */
		184	// SPECIAL, /* 0x3e - F4 */
		185	// SPECIAL, /* 0x3f - F5 */
		186	// SPECIAL, /* 0x40 - F6 */
		187	// SPECIAL, /* 0x41 - F7 */
		188	// SPECIAL, /* 0x42 - F8 */
		189	// SPECIAL, /* 0x43 - F9 */
		190	// SPECIAL, /* 0x44 - F10 */
1339	cejka	191	SPECIAL, /* 0x45 - NumLock */
		192	SPECIAL, /* 0x46 - ScrollLock */
		193	'7', '8', '9', '-',
		194	'4', '5', '6', '+',
		195	'1', '2', '3',
		196	'0', '.',
		197	SPECIAL, /* 0x54 - Alt-SysRq */
		198	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
		199	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
		200	SPECIAL, /* 0x57 - F11 */
		201	SPECIAL, /* 0x58 - F12 */
		202	SPECIAL, /* 0x59 */
		203	SPECIAL, /* 0x5a */
		204	SPECIAL, /* 0x5b */
		205	SPECIAL, /* 0x5c */
		206	SPECIAL, /* 0x5d */
		207	SPECIAL, /* 0x5e */
		208	SPECIAL, /* 0x5f */
		209	SPECIAL, /* 0x60 */
		210	SPECIAL, /* 0x61 */
		211	SPECIAL, /* 0x62 */
		212	SPECIAL, /* 0x63 */
		213	SPECIAL, /* 0x64 */
		214	SPECIAL, /* 0x65 */
		215	SPECIAL, /* 0x66 */
		216	SPECIAL, /* 0x67 */
		217	SPECIAL, /* 0x68 */
		218	SPECIAL, /* 0x69 */
		219	SPECIAL, /* 0x6a */
		220	SPECIAL, /* 0x6b */
		221	SPECIAL, /* 0x6c */
		222	SPECIAL, /* 0x6d */
		223	SPECIAL, /* 0x6e */
		224	SPECIAL, /* 0x6f */
		225	SPECIAL, /* 0x70 */
		226	SPECIAL, /* 0x71 */
		227	SPECIAL, /* 0x72 */
		228	SPECIAL, /* 0x73 */
		229	SPECIAL, /* 0x74 */
		230	SPECIAL, /* 0x75 */
		231	SPECIAL, /* 0x76 */
		232	SPECIAL, /* 0x77 */
		233	SPECIAL, /* 0x78 */
		234	SPECIAL, /* 0x79 */
		235	SPECIAL, /* 0x7a */
		236	SPECIAL, /* 0x7b */
		237	SPECIAL, /* 0x7c */
		238	SPECIAL, /* 0x7d */
		239	SPECIAL, /* 0x7e */
		240	SPECIAL, /* 0x7f */
		241	};
		242
		243	irq_cmd_t i8042_cmds[1] = {
		244	{ CMD_PORT_READ_1, (void *)0x60, 0 }
		245	};
		246
		247	irq_code_t i8042_kbd = {
		248	1,
		249	i8042_cmds
		250	};
		251
1451	cejka	252	static int key_released(keybuffer_t *keybuffer, unsigned char key)
1339	cejka	253	{
		254	switch (key) {
		255	case SC_LSHIFT:
		256	case SC_RSHIFT:
		257	keyflags &= ~PRESSED_SHIFT;
		258	break;
		259	case SC_CAPSLOCK:
		260	keyflags &= ~PRESSED_CAPSLOCK;
		261	if (lockflags & LOCKED_CAPSLOCK)
		262	lockflags &= ~LOCKED_CAPSLOCK;
		263	else
		264	lockflags \|= LOCKED_CAPSLOCK;
		265	break;
		266	default:
		267	break;
		268	}
		269	}
		270
1451	cejka	271	static int key_pressed(keybuffer_t *keybuffer, unsigned char key)
1339	cejka	272	{
		273	char *map = sc_primary_map;
		274	char ascii = sc_primary_map[key];
		275	char shift, capslock;
		276	char letter = 0;
		277
		278	switch (key) {
		279	case SC_LSHIFT:
		280	case SC_RSHIFT:
		281	keyflags \|= PRESSED_SHIFT;
		282	break;
		283	case SC_CAPSLOCK:
		284	keyflags \|= PRESSED_CAPSLOCK;
		285	break;
		286	case SC_SPEC_ESCAPE:
		287	break;
		288	case SC_LEFTARR:
1451	cejka	289	if (keybuffer_available(keybuffer) >= 3) {
		290	keybuffer_push(keybuffer, 0x1b);
		291	keybuffer_push(keybuffer, 0x5b);
		292	keybuffer_push(keybuffer, 0x44);
1339	cejka	293	}
		294	break;
		295	case SC_RIGHTARR:
1451	cejka	296	if (keybuffer_available(keybuffer) >= 3) {
		297	keybuffer_push(keybuffer, 0x1b);
		298	keybuffer_push(keybuffer, 0x5b);
		299	keybuffer_push(keybuffer, 0x43);
1339	cejka	300	}
		301	break;
		302	case SC_UPARR:
1451	cejka	303	if (keybuffer_available(keybuffer) >= 3) {
		304	keybuffer_push(keybuffer, 0x1b);
		305	keybuffer_push(keybuffer, 0x5b);
		306	keybuffer_push(keybuffer, 0x41);
1339	cejka	307	}
		308	break;
		309	case SC_DOWNARR:
1451	cejka	310	if (keybuffer_available(keybuffer) >= 3) {
		311	keybuffer_push(keybuffer, 0x1b);
		312	keybuffer_push(keybuffer, 0x5b);
		313	keybuffer_push(keybuffer, 0x42);
1339	cejka	314	}
		315	break;
		316	case SC_HOME:
1451	cejka	317	if (keybuffer_available(keybuffer) >= 3) {
		318	keybuffer_push(keybuffer, 0x1b);
		319	keybuffer_push(keybuffer, 0x4f);
		320	keybuffer_push(keybuffer, 0x48);
1339	cejka	321	}
		322	break;
		323	case SC_END:
1451	cejka	324	if (keybuffer_available(keybuffer) >= 3) {
		325	keybuffer_push(keybuffer, 0x1b);
		326	keybuffer_push(keybuffer, 0x4f);
		327	keybuffer_push(keybuffer, 0x46);
1339	cejka	328	}
		329	break;
		330	case SC_DELETE:
1451	cejka	331	if (keybuffer_available(keybuffer) >= 4) {
		332	keybuffer_push(keybuffer, 0x1b);
		333	keybuffer_push(keybuffer, 0x5b);
		334	keybuffer_push(keybuffer, 0x33);
		335	keybuffer_push(keybuffer, 0x7e);
1339	cejka	336	}
		337	break;
		338	default:
		339	letter = ((ascii >= 'a') && (ascii <= 'z'));
		340	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
		341	shift = keyflags & PRESSED_SHIFT;
		342	if (letter && capslock)
		343	shift = !shift;
		344	if (shift)
		345	map = sc_secondary_map;
1451	cejka	346	keybuffer_push(keybuffer, map[key]);
1339	cejka	347	break;
		348	}
		349	}
		350
		351	/** Register uspace irq handler
		352	* @return
		353	*/
		354	int kbd_arch_init(void)
		355	{
		356	return !(ipc_register_irq(1, &i8042_kbd));
		357	}
		358
1451	cejka	359	int kbd_arch_process(keybuffer_t *keybuffer, int scan_code)
1339	cejka	360	{
		361	if (scan_code != IGNORE_CODE) {
		362	if (scan_code & KEY_RELEASE)
1451	cejka	363	key_released(keybuffer, scan_code ^ KEY_RELEASE);
1339	cejka	364	else
1451	cejka	365	key_pressed(keybuffer, scan_code);
1339	cejka	366	}
		367	return 1;
		368	}

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(root)/uspace/trunk/kbd/arch/ia32/src/kbd.c @ 1707 – Rev 1451