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
1649	cejka	30	/** @addtogroup kbdia32 ia32
1657	cejka	31	* @brief HelenOS ia32 / amd64 arch dependent parts of uspace keyboard handler.
1649	cejka	32	* @ingroup kbd
		33	* @{
		34	*/
		35	/** @file
1657	cejka	36	* @ingroup kbdamd64
1649	cejka	37	*/
		38
1339	cejka	39	#include <arch/kbd.h>
1353	jermar	40	#include <ipc/ipc.h>
1694	palkovsky	41	#include <unistd.h>
		42	#include <kbd.h>
		43	#include <keys.h>
1339	cejka	44
1694	palkovsky	45	/* Interesting bits for status register */
		46	#define i8042_OUTPUT_FULL 0x1
		47	#define i8042_INPUT_FULL 0x2
		48	#define i8042_MOUSE_DATA 0x20
		49
		50	/* Command constants */
		51	#define i8042_CMD_KBD 0x60
		52	#define i8042_CMD_MOUSE 0xd4
		53
		54	/* Keyboard cmd byte */
		55	#define i8042_KBD_IE 0x1
		56	#define i8042_MOUSE_IE 0x2
		57	#define i8042_KBD_DISABLE 0x10
		58	#define i8042_MOUSE_DISABLE 0x20
		59	#define i8042_KBD_TRANSLATE 0x40
		60
		61	/* Mouse constants */
		62	#define MOUSE_OUT_INIT 0xf4
		63	#define MOUSE_ACK 0xfa
		64
		65
1603	vana	66	#define SPECIAL 255
1339	cejka	67	#define KEY_RELEASE 0x80
		68
		69	/**
		70	* These codes read from i8042 data register are silently ignored.
		71	*/
		72	#define IGNORE_CODE 0x7f
		73
		74	#define PRESSED_SHIFT (1<<0)
		75	#define PRESSED_CAPSLOCK (1<<1)
		76	#define LOCKED_CAPSLOCK (1<<0)
		77
		78	/** Scancodes. */
		79	#define SC_ESC 0x01
		80	#define SC_BACKSPACE 0x0e
		81	#define SC_LSHIFT 0x2a
		82	#define SC_RSHIFT 0x36
		83	#define SC_CAPSLOCK 0x3a
		84	#define SC_SPEC_ESCAPE 0xe0
		85	#define SC_LEFTARR 0x4b
		86	#define SC_RIGHTARR 0x4d
		87	#define SC_UPARR 0x48
		88	#define SC_DOWNARR 0x50
		89	#define SC_DELETE 0x53
		90	#define SC_HOME 0x47
		91	#define SC_END 0x4f
		92
1560	vana	93	#define FUNCTION_KEYS 0x100
		94
1339	cejka	95	static volatile int keyflags; /*< Tracking of multiple keypresses. /
		96	static volatile int lockflags; /*< Tracking of multiple keys lockings. /
		97
		98	/** Primary meaning of scancodes. */
1560	vana	99	static int sc_primary_map[] = {
1339	cejka	100	SPECIAL, /* 0x00 */
		101	SPECIAL, /* 0x01 - Esc */
		102	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
		103	'\b', /* 0x0e - Backspace */
		104	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
		105	SPECIAL, /* 0x1d - LCtrl */
		106	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
		107	'`',
		108	SPECIAL, /* 0x2a - LShift */
		109	'\\',
		110	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
		111	SPECIAL, /* 0x36 - RShift */
		112	'*',
		113	SPECIAL, /* 0x38 - LAlt */
		114	' ',
		115	SPECIAL, /* 0x3a - CapsLock */
1560	vana	116	(FUNCTION_KEYS \| 1), /* 0x3b - F1 */
		117	(FUNCTION_KEYS \| 2), /* 0x3c - F2 */
		118	(FUNCTION_KEYS \| 3), /* 0x3d - F3 */
		119	(FUNCTION_KEYS \| 4), /* 0x3e - F4 */
		120	(FUNCTION_KEYS \| 5), /* 0x3f - F5 */
		121	(FUNCTION_KEYS \| 6), /* 0x40 - F6 */
		122	(FUNCTION_KEYS \| 7), /* 0x41 - F7 */
		123	(FUNCTION_KEYS \| 8), /* 0x42 - F8 */
		124	(FUNCTION_KEYS \| 9), /* 0x43 - F9 */
		125	(FUNCTION_KEYS \| 10), /* 0x44 - F10 */
1339	cejka	126	SPECIAL, /* 0x45 - NumLock */
		127	SPECIAL, /* 0x46 - ScrollLock */
		128	'7', '8', '9', '-',
		129	'4', '5', '6', '+',
		130	'1', '2', '3',
		131	'0', '.',
		132	SPECIAL, /* 0x54 - Alt-SysRq */
		133	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
		134	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
1566	cejka	135	(FUNCTION_KEYS \| 11), /* 0x57 - F11 */
		136	(FUNCTION_KEYS \| 12), /* 0x58 - F12 */
1339	cejka	137	SPECIAL, /* 0x59 */
		138	SPECIAL, /* 0x5a */
		139	SPECIAL, /* 0x5b */
		140	SPECIAL, /* 0x5c */
		141	SPECIAL, /* 0x5d */
		142	SPECIAL, /* 0x5e */
		143	SPECIAL, /* 0x5f */
		144	SPECIAL, /* 0x60 */
		145	SPECIAL, /* 0x61 */
		146	SPECIAL, /* 0x62 */
		147	SPECIAL, /* 0x63 */
		148	SPECIAL, /* 0x64 */
		149	SPECIAL, /* 0x65 */
		150	SPECIAL, /* 0x66 */
		151	SPECIAL, /* 0x67 */
		152	SPECIAL, /* 0x68 */
		153	SPECIAL, /* 0x69 */
		154	SPECIAL, /* 0x6a */
		155	SPECIAL, /* 0x6b */
		156	SPECIAL, /* 0x6c */
		157	SPECIAL, /* 0x6d */
		158	SPECIAL, /* 0x6e */
		159	SPECIAL, /* 0x6f */
		160	SPECIAL, /* 0x70 */
		161	SPECIAL, /* 0x71 */
		162	SPECIAL, /* 0x72 */
		163	SPECIAL, /* 0x73 */
		164	SPECIAL, /* 0x74 */
		165	SPECIAL, /* 0x75 */
		166	SPECIAL, /* 0x76 */
		167	SPECIAL, /* 0x77 */
		168	SPECIAL, /* 0x78 */
		169	SPECIAL, /* 0x79 */
		170	SPECIAL, /* 0x7a */
		171	SPECIAL, /* 0x7b */
		172	SPECIAL, /* 0x7c */
		173	SPECIAL, /* 0x7d */
		174	SPECIAL, /* 0x7e */
		175	SPECIAL, /* 0x7f */
		176	};
		177
		178	/** Secondary meaning of scancodes. */
1566	cejka	179	static int sc_secondary_map[] = {
1339	cejka	180	SPECIAL, /* 0x00 */
1644	vana	181	0x1b, /* 0x01 - Esc */
1339	cejka	182	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
		183	SPECIAL, /* 0x0e - Backspace */
		184	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
		185	SPECIAL, /* 0x1d - LCtrl */
		186	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
		187	'~',
		188	SPECIAL, /* 0x2a - LShift */
		189	'\|',
		190	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
		191	SPECIAL, /* 0x36 - RShift */
		192	'*',
		193	SPECIAL, /* 0x38 - LAlt */
		194	' ',
		195	SPECIAL, /* 0x3a - CapsLock */
1504	cejka	196	SPECIAL, /* 0x3b - F1 */
		197	SPECIAL, /* 0x3c - F2 */
		198	SPECIAL, /* 0x3d - F3 */
		199	SPECIAL, /* 0x3e - F4 */
		200	SPECIAL, /* 0x3f - F5 */
		201	SPECIAL, /* 0x40 - F6 */
		202	SPECIAL, /* 0x41 - F7 */
		203	SPECIAL, /* 0x42 - F8 */
		204	SPECIAL, /* 0x43 - F9 */
		205	SPECIAL, /* 0x44 - F10 */
1339	cejka	206	SPECIAL, /* 0x45 - NumLock */
		207	SPECIAL, /* 0x46 - ScrollLock */
		208	'7', '8', '9', '-',
		209	'4', '5', '6', '+',
		210	'1', '2', '3',
		211	'0', '.',
		212	SPECIAL, /* 0x54 - Alt-SysRq */
		213	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
		214	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
		215	SPECIAL, /* 0x57 - F11 */
		216	SPECIAL, /* 0x58 - F12 */
		217	SPECIAL, /* 0x59 */
		218	SPECIAL, /* 0x5a */
		219	SPECIAL, /* 0x5b */
		220	SPECIAL, /* 0x5c */
		221	SPECIAL, /* 0x5d */
		222	SPECIAL, /* 0x5e */
		223	SPECIAL, /* 0x5f */
		224	SPECIAL, /* 0x60 */
		225	SPECIAL, /* 0x61 */
		226	SPECIAL, /* 0x62 */
		227	SPECIAL, /* 0x63 */
		228	SPECIAL, /* 0x64 */
		229	SPECIAL, /* 0x65 */
		230	SPECIAL, /* 0x66 */
		231	SPECIAL, /* 0x67 */
		232	SPECIAL, /* 0x68 */
		233	SPECIAL, /* 0x69 */
		234	SPECIAL, /* 0x6a */
		235	SPECIAL, /* 0x6b */
		236	SPECIAL, /* 0x6c */
		237	SPECIAL, /* 0x6d */
		238	SPECIAL, /* 0x6e */
		239	SPECIAL, /* 0x6f */
		240	SPECIAL, /* 0x70 */
		241	SPECIAL, /* 0x71 */
		242	SPECIAL, /* 0x72 */
		243	SPECIAL, /* 0x73 */
		244	SPECIAL, /* 0x74 */
		245	SPECIAL, /* 0x75 */
		246	SPECIAL, /* 0x76 */
		247	SPECIAL, /* 0x77 */
		248	SPECIAL, /* 0x78 */
		249	SPECIAL, /* 0x79 */
		250	SPECIAL, /* 0x7a */
		251	SPECIAL, /* 0x7b */
		252	SPECIAL, /* 0x7c */
		253	SPECIAL, /* 0x7d */
		254	SPECIAL, /* 0x7e */
		255	SPECIAL, /* 0x7f */
		256	};
		257
1694	palkovsky	258	irq_cmd_t i8042_cmds[2] = {
		259	{ CMD_PORT_READ_1, (void *)0x64, 0, 1 },
		260	{ CMD_PORT_READ_1, (void *)0x60, 0, 2 }
1339	cejka	261	};
		262
		263	irq_code_t i8042_kbd = {
1694	palkovsky	264	2,
1339	cejka	265	i8042_cmds
		266	};
		267
1720	palkovsky	268	static void key_released(keybuffer_t *keybuffer, unsigned char key)
1339	cejka	269	{
		270	switch (key) {
		271	case SC_LSHIFT:
		272	case SC_RSHIFT:
		273	keyflags &= ~PRESSED_SHIFT;
		274	break;
		275	case SC_CAPSLOCK:
		276	keyflags &= ~PRESSED_CAPSLOCK;
		277	if (lockflags & LOCKED_CAPSLOCK)
		278	lockflags &= ~LOCKED_CAPSLOCK;
		279	else
		280	lockflags \|= LOCKED_CAPSLOCK;
		281	break;
		282	default:
		283	break;
		284	}
		285	}
		286
1720	palkovsky	287	static void key_pressed(keybuffer_t *keybuffer, unsigned char key)
1339	cejka	288	{
1560	vana	289	int *map = sc_primary_map;
		290	int ascii = sc_primary_map[key];
		291	int shift, capslock;
		292	int letter = 0;
1339	cejka	293
1644	vana	294	static int esc_count=0;
		295
		296
		297	if ( key == SC_ESC ) {
		298	esc_count++;
		299	if ( esc_count == 3 ) {
		300	__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
		301	}
		302	} else {
		303	esc_count=0;
		304	}
		305
		306
		307
1339	cejka	308	switch (key) {
		309	case SC_LSHIFT:
		310	case SC_RSHIFT:
		311	keyflags \|= PRESSED_SHIFT;
		312	break;
		313	case SC_CAPSLOCK:
		314	keyflags \|= PRESSED_CAPSLOCK;
		315	break;
		316	case SC_SPEC_ESCAPE:
		317	break;
1504	cejka	318	/* case SC_LEFTARR:
1451	cejka	319	if (keybuffer_available(keybuffer) >= 3) {
		320	keybuffer_push(keybuffer, 0x1b);
		321	keybuffer_push(keybuffer, 0x5b);
		322	keybuffer_push(keybuffer, 0x44);
1339	cejka	323	}
		324	break;
		325	case SC_RIGHTARR:
1451	cejka	326	if (keybuffer_available(keybuffer) >= 3) {
		327	keybuffer_push(keybuffer, 0x1b);
		328	keybuffer_push(keybuffer, 0x5b);
		329	keybuffer_push(keybuffer, 0x43);
1339	cejka	330	}
		331	break;
		332	case SC_UPARR:
1451	cejka	333	if (keybuffer_available(keybuffer) >= 3) {
		334	keybuffer_push(keybuffer, 0x1b);
		335	keybuffer_push(keybuffer, 0x5b);
		336	keybuffer_push(keybuffer, 0x41);
1339	cejka	337	}
		338	break;
		339	case SC_DOWNARR:
1451	cejka	340	if (keybuffer_available(keybuffer) >= 3) {
		341	keybuffer_push(keybuffer, 0x1b);
		342	keybuffer_push(keybuffer, 0x5b);
		343	keybuffer_push(keybuffer, 0x42);
1339	cejka	344	}
		345	break;
		346	case SC_HOME:
1451	cejka	347	if (keybuffer_available(keybuffer) >= 3) {
		348	keybuffer_push(keybuffer, 0x1b);
		349	keybuffer_push(keybuffer, 0x4f);
		350	keybuffer_push(keybuffer, 0x48);
1339	cejka	351	}
		352	break;
		353	case SC_END:
1451	cejka	354	if (keybuffer_available(keybuffer) >= 3) {
		355	keybuffer_push(keybuffer, 0x1b);
		356	keybuffer_push(keybuffer, 0x4f);
		357	keybuffer_push(keybuffer, 0x46);
1339	cejka	358	}
		359	break;
		360	case SC_DELETE:
1451	cejka	361	if (keybuffer_available(keybuffer) >= 4) {
		362	keybuffer_push(keybuffer, 0x1b);
		363	keybuffer_push(keybuffer, 0x5b);
		364	keybuffer_push(keybuffer, 0x33);
		365	keybuffer_push(keybuffer, 0x7e);
1339	cejka	366	}
		367	break;
1504	cejka	368	*/ default:
1339	cejka	369	letter = ((ascii >= 'a') && (ascii <= 'z'));
		370	capslock = (keyflags & PRESSED_CAPSLOCK) \|\| (lockflags & LOCKED_CAPSLOCK);
		371	shift = keyflags & PRESSED_SHIFT;
		372	if (letter && capslock)
		373	shift = !shift;
		374	if (shift)
		375	map = sc_secondary_map;
1504	cejka	376	if (map[key] != SPECIAL)
		377	keybuffer_push(keybuffer, map[key]);
1339	cejka	378	break;
		379	}
		380	}
		381
1694	palkovsky	382
		383	static void wait_ready(void) {
		384	while (i8042_status_read() & i8042_INPUT_FULL)
		385	;
		386	}
		387
1339	cejka	388	/** Register uspace irq handler
		389	* @return
		390	*/
		391	int kbd_arch_init(void)
		392	{
1720	palkovsky	393	int i;
1694	palkovsky	394	int mouseenabled = 0;
		395
		396	iospace_enable(task_get_id(),(void *)i8042_DATA, 5);
		397	/* Disable kbd, enable mouse */
		398	i8042_command_write(i8042_CMD_KBD);
		399	wait_ready();
		400	i8042_command_write(i8042_CMD_KBD);
		401	wait_ready();
		402	i8042_data_write(i8042_KBD_DISABLE);
		403	wait_ready();
		404
		405	/* Flush all current IO */
		406	while (i8042_status_read() & i8042_OUTPUT_FULL)
		407	i8042_data_read();
		408	/* Initialize mouse */
		409	i8042_command_write(i8042_CMD_MOUSE);
		410	wait_ready();
		411	i8042_data_write(MOUSE_OUT_INIT);
		412	wait_ready();
		413
		414	int mouseanswer = 0;
		415	for (i=0;i < 1000; i++) {
		416	int status = i8042_status_read();
		417	if (status & i8042_OUTPUT_FULL) {
		418	int data = i8042_data_read();
		419	if (status & i8042_MOUSE_DATA) {
		420	mouseanswer = data;
		421	break;
		422	}
		423	}
		424	usleep(1000);
		425	}
		426	if (mouseanswer == MOUSE_ACK) {
		427	/* enable mouse */
		428	mouseenabled = 1;
		429
		430	ipc_register_irq(MOUSE_IRQ, &i8042_kbd);
		431	}
		432	/* Enable kbd */
		433	ipc_register_irq(KBD_IRQ, &i8042_kbd);
1713	palkovsky	434	/* Register for irq restart */
		435	ipc_register_irq(IPC_IRQ_KBDRESTART, NULL);
1694	palkovsky	436
		437	int newcontrol = i8042_KBD_IE \| i8042_KBD_TRANSLATE;
		438	if (mouseenabled)
		439	newcontrol \|= i8042_MOUSE_IE;
		440
		441	i8042_command_write(i8042_CMD_KBD);
		442	wait_ready();
		443	i8042_data_write(newcontrol);
		444	wait_ready();
		445
		446	return 0;
1339	cejka	447	}
		448
1694	palkovsky	449	/** Process keyboard & mouse events */
		450	int kbd_arch_process(keybuffer_t keybuffer, ipc_call_t call)
1339	cejka	451	{
1694	palkovsky	452	int status = IPC_GET_ARG1(*call);
		453
1713	palkovsky	454	if (IPC_GET_METHOD(*call) == IPC_IRQ_KBDRESTART) {
		455	kbd_arch_init();
		456	return 1;
		457	}
		458
1707	palkovsky	459	if ((status & i8042_MOUSE_DATA))
		460	return 0;
		461
		462	int scan_code = IPC_GET_ARG2(*call);
		463
		464	if (scan_code != IGNORE_CODE) {
		465	if (scan_code & KEY_RELEASE)
		466	key_released(keybuffer, scan_code ^ KEY_RELEASE);
		467	else
		468	key_pressed(keybuffer, scan_code);
1339	cejka	469	}
		470	return 1;
		471	}
1649	cejka	472
		473	/**
		474	* @}
		475	*/
		476

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