WebSVN – HelenOS – Blame – /trunk/kernel/genarch/src/drivers/ega/ega.c

Rev	Author	Line No.	Line
1	jermar	1	/*
2071	jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
1	jermar	3	* All rights reserved.
		4	*
		5	* Redistribution and use in source and binary forms, with or without
		6	* modification, are permitted provided that the following conditions
		7	* are met:
		8	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		13	* documentation and/or other materials provided with the distribution.
		14	* - The name of the author may not be used to endorse or promote products
		15	* derived from this software without specific prior written permission.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
3940	decky	29	/** @addtogroup genarch_drivers
1702	cejka	30	* @{
		31	*/
1754	jermar	32	/**
		33	* @file
		34	* @brief EGA driver.
1702	cejka	35	*/
		36
3779	jermar	37	#include <genarch/drivers/ega/ega.h>
1	jermar	38	#include <putchar.h>
		39	#include <mm/page.h>
755	jermar	40	#include <mm/as.h>
3751	svoboda	41	#include <mm/slab.h>
167	jermar	42	#include <arch/mm/page.h>
1	jermar	43	#include <synch/spinlock.h>
		44	#include <arch/types.h>
		45	#include <arch/asm.h>
195	vana	46	#include <memstr.h>
575	palkovsky	47	#include <console/chardev.h>
		48	#include <console/console.h>
1473	decky	49	#include <sysinfo/sysinfo.h>
2015	jermar	50	#include <ddi/ddi.h>
1	jermar	51
		52	/*
		53	* The EGA driver.
		54	* Simple and short. Function for displaying characters and "scrolling".
		55	*/
		56
623	jermar	57	SPINLOCK_INITIALIZE(egalock);
1780	jermar	58	static uint32_t ega_cursor;
		59	static uint8_t *videoram;
3751	svoboda	60	static uint8_t *backbuf;
3930	jermar	61	static ioport8_t *ega_base;
1	jermar	62
4093	decky	63	#define SPACE 0x20
4190	decky	64	#define STYLE 0x1e
		65	#define INVAL 0x17
3994	decky	66
4190	decky	67	#define EMPTY_CHAR ((STYLE << 8) \| SPACE)
575	palkovsky	68
4190	decky	69	static uint16_t ega_oem_glyph(const wchar_t ch)
		70	{
		71	if ((ch >= 0x0000) && (ch <= 0x007f))
		72	return ch;
		73
		74	if (ch == 0x00a0)
		75	return 255;
		76
		77	if (ch == 0x00a1)
		78	return 173;
		79
		80	if ((ch >= 0x00a2) && (ch <= 0x00a3))
		81	return (ch - 7);
		82
		83	if (ch == 0x00a5)
		84	return 157;
		85
		86	if (ch == 0x00aa)
		87	return 166;
		88
		89	if (ch == 0x00ab)
		90	return 174;
		91
		92	if (ch == 0x00ac)
		93	return 170;
		94
		95	if (ch == 0x00b0)
		96	return 248;
		97
		98	if (ch == 0x00b1)
		99	return 241;
		100
		101	if (ch == 0x00b2)
		102	return 253;
		103
		104	if (ch == 0x00b5)
		105	return 230;
		106
		107	if (ch == 0x00b7)
		108	return 250;
		109
		110	if (ch == 0x00ba)
		111	return 167;
		112
		113	if (ch == 0x00bb)
		114	return 175;
		115
		116	if (ch == 0x00bc)
		117	return 172;
		118
		119	if (ch == 0x00bd)
		120	return 171;
		121
		122	if (ch == 0x00bf)
		123	return 168;
		124
		125	if ((ch >= 0x00c4) && (ch <= 0x00c5))
		126	return (ch - 54);
		127
		128	if (ch == 0x00c6)
		129	return 146;
		130
		131	if (ch == 0x00c7)
		132	return 128;
		133
		134	if (ch == 0x00c9)
		135	return 144;
		136
		137	if (ch == 0x00d1)
		138	return 165;
		139
		140	if (ch == 0x00d6)
		141	return 153;
		142
		143	if (ch == 0x00dc)
		144	return 154;
		145
		146	if (ch == 0x00df)
		147	return 225;
		148
		149	if (ch == 0x00e0)
		150	return 133;
		151
		152	if (ch == 0x00e1)
		153	return 160;
		154
		155	if (ch == 0x00e2)
		156	return 131;
		157
		158	if (ch == 0x00e4)
		159	return 132;
		160
		161	if (ch == 0x00e5)
		162	return 134;
		163
		164	if (ch == 0x00e6)
		165	return 145;
		166
		167	if (ch == 0x00e7)
		168	return 135;
		169
		170	if (ch == 0x00e8)
		171	return 138;
		172
		173	if (ch == 0x00e9)
		174	return 130;
		175
		176	if ((ch >= 0x00ea) && (ch <= 0x00eb))
		177	return (ch - 98);
		178
		179	if (ch == 0x00ec)
		180	return 141;
		181
		182	if (ch == 0x00ed)
		183	return 161;
		184
		185	if (ch == 0x00ee)
		186	return 140;
		187
		188	if (ch == 0x00ef)
		189	return 139;
		190
		191	if (ch == 0x00f1)
		192	return 164;
		193
		194	if (ch == 0x00f2)
		195	return 149;
		196
		197	if (ch == 0x00f3)
		198	return 162;
		199
		200	if (ch == 0x00f4)
		201	return 147;
		202
		203	if (ch == 0x00f6)
		204	return 148;
		205
		206	if (ch == 0x00f7)
		207	return 246;
		208
		209	if (ch == 0x00f9)
		210	return 151;
		211
		212	if (ch == 0x00fa)
		213	return 163;
		214
		215	if (ch == 0x00fb)
		216	return 150;
		217
		218	if (ch == 0x00fc)
		219	return 129;
		220
		221	if (ch == 0x00ff)
		222	return 152;
		223
		224	if (ch == 0x0192)
		225	return 159;
		226
		227	if (ch == 0x0393)
		228	return 226;
		229
		230	if (ch == 0x0398)
		231	return 233;
		232
		233	if (ch == 0x03a3)
		234	return 228;
		235
		236	if (ch == 0x03a6)
		237	return 232;
		238
		239	if (ch == 0x03a9)
		240	return 234;
		241
		242	if (ch == 0x03b1)
		243	return 224;
		244
		245	if (ch == 0x03b4)
		246	return 235;
		247
		248	if (ch == 0x03b5)
		249	return 238;
		250
		251	if (ch == 0x03c0)
		252	return 227;
		253
		254	if (ch == 0x03c3)
		255	return 229;
		256
		257	if (ch == 0x03c4)
		258	return 231;
		259
		260	if (ch == 0x03c6)
		261	return 237;
		262
		263	if (ch == 0x207f)
		264	return 252;
		265
		266	if (ch == 0x20a7)
		267	return 158;
		268
		269	if (ch == 0x2219)
		270	return 249;
		271
		272	if (ch == 0x221a)
		273	return 251;
		274
		275	if (ch == 0x221e)
		276	return 236;
		277
		278	if (ch == 0x2229)
		279	return 239;
		280
		281	if (ch == 0x2248)
		282	return 247;
		283
		284	if (ch == 0x2261)
		285	return 240;
		286
		287	if (ch == 0x2264)
		288	return 243;
		289
		290	if (ch == 0x2265)
		291	return 242;
		292
		293	if (ch == 0x2310)
		294	return 169;
		295
		296	if ((ch >= 0x2320) && (ch <= 0x2321))
		297	return (ch - 8748);
		298
		299	if (ch == 0x2500)
		300	return 196;
		301
		302	if (ch == 0x2502)
		303	return 179;
		304
		305	if (ch == 0x250c)
		306	return 218;
		307
		308	if (ch == 0x2510)
		309	return 191;
		310
		311	if (ch == 0x2514)
		312	return 192;
		313
		314	if (ch == 0x2518)
		315	return 217;
		316
		317	if (ch == 0x251c)
		318	return 195;
		319
		320	if (ch == 0x2524)
		321	return 180;
		322
		323	if (ch == 0x252c)
		324	return 194;
		325
		326	if (ch == 0x2534)
		327	return 193;
		328
		329	if (ch == 0x253c)
		330	return 197;
		331
		332	if (ch == 0x2550)
		333	return 205;
		334
		335	if (ch == 0x2551)
		336	return 186;
		337
		338	if ((ch >= 0x2552) && (ch <= 0x2553))
		339	return (ch - 9341);
		340
		341	if (ch == 0x2554)
		342	return 201;
		343
		344	if (ch == 0x2555)
		345	return 184;
		346
		347	if (ch == 0x2556)
		348	return 183;
		349
		350	if (ch == 0x2557)
		351	return 187;
		352
		353	if (ch == 0x2558)
		354	return 212;
		355
		356	if (ch == 0x2559)
		357	return 211;
		358
		359	if (ch == 0x255a)
		360	return 200;
		361
		362	if (ch == 0x255b)
		363	return 190;
		364
		365	if (ch == 0x255c)
		366	return 189;
		367
		368	if (ch == 0x255d)
		369	return 188;
		370
		371	if ((ch >= 0x255e) && (ch <= 0x255f))
		372	return (ch - 9368);
		373
		374	if (ch == 0x2560)
		375	return 204;
		376
		377	if ((ch >= 0x2561) && (ch <= 0x2562))
		378	return (ch - 9388);
		379
		380	if (ch == 0x2563)
		381	return 185;
		382
		383	if ((ch >= 0x2564) && (ch <= 0x2565))
		384	return (ch - 9363);
		385
		386	if (ch == 0x2566)
		387	return 203;
		388
		389	if ((ch >= 0x2567) && (ch <= 0x2568))
		390	return (ch - 9368);
		391
		392	if (ch == 0x2569)
		393	return 202;
		394
		395	if (ch == 0x256a)
		396	return 216;
		397
		398	if (ch == 0x256b)
		399	return 215;
		400
		401	if (ch == 0x256c)
		402	return 206;
		403
		404	if (ch == 0x2580)
		405	return 223;
		406
		407	if (ch == 0x2584)
		408	return 220;
		409
		410	if (ch == 0x2588)
		411	return 219;
		412
		413	if (ch == 0x258c)
		414	return 221;
		415
		416	if (ch == 0x2590)
		417	return 222;
		418
		419	if ((ch >= 0x2591) && (ch <= 0x2593))
		420	return (ch - 9441);
		421
		422	return 256;
		423	}
		424
1	jermar	425	/*
		426	* This function takes care of scrolling.
		427	*/
452	decky	428	static void ega_check_cursor(void)
1	jermar	429	{
3940	decky	430	if (ega_cursor < EGA_SCREEN)
125	jermar	431	return;
3994	decky	432
3940	decky	433	memmove((void ) videoram, (void ) (videoram + EGA_COLS * 2),
		434	(EGA_SCREEN - EGA_COLS) * 2);
		435	memmove((void ) backbuf, (void ) (backbuf + EGA_COLS * 2),
		436	(EGA_SCREEN - EGA_COLS) * 2);
3994	decky	437	memsetw(videoram + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR);
		438	memsetw(backbuf + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR);
3940	decky	439	ega_cursor = ega_cursor - EGA_COLS;
1	jermar	440	}
		441
3975	decky	442	static void ega_show_cursor(void)
		443	{
		444	pio_write_8(ega_base + EGA_INDEX_REG, 0x0a);
		445	uint8_t stat = pio_read_8(ega_base + EGA_DATA_REG);
		446	pio_write_8(ega_base + EGA_INDEX_REG, 0x0a);
		447	pio_write_8(ega_base + EGA_DATA_REG, stat & (~(1 << 5)));
		448	}
		449
3844	decky	450	static void ega_move_cursor(void)
1	jermar	451	{
3975	decky	452	pio_write_8(ega_base + EGA_INDEX_REG, 0x0e);
3902	jermar	453	pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff));
3975	decky	454	pio_write_8(ega_base + EGA_INDEX_REG, 0x0f);
3940	decky	455	pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff));
3844	decky	456	}
		457
3975	decky	458	static void ega_sync_cursor(void)
		459	{
		460	pio_write_8(ega_base + EGA_INDEX_REG, 0x0e);
		461	uint8_t hi = pio_read_8(ega_base + EGA_DATA_REG);
		462	pio_write_8(ega_base + EGA_INDEX_REG, 0x0f);
		463	uint8_t lo = pio_read_8(ega_base + EGA_DATA_REG);
		464
		465	ega_cursor = (hi << 8) \| lo;
3994	decky	466
		467	if (ega_cursor >= EGA_SCREEN)
		468	ega_cursor = 0;
		469
3975	decky	470	if ((ega_cursor % EGA_COLS) != 0)
		471	ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS;
		472
3994	decky	473	memsetw(videoram + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR);
		474	memsetw(backbuf + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR);
		475
3975	decky	476	ega_check_cursor();
		477	ega_move_cursor();
		478	ega_show_cursor();
		479	}
		480
4190	decky	481	static void ega_display_char(wchar_t ch, bool silent)
3844	decky	482	{
4190	decky	483	uint16_t index = ega_oem_glyph(ch);
		484	uint8_t glyph;
		485	uint8_t style;
3844	decky	486
4190	decky	487	if ((index >> 8)) {
		488	glyph = '?';
		489	style = INVAL;
		490	} else {
		491	glyph = index & 0xff;
		492	style = STYLE;
		493	}
		494
		495	backbuf[ega_cursor * 2] = glyph;
		496	backbuf[ega_cursor * 2 + 1] = style;
		497
4093	decky	498	if (!silent) {
4190	decky	499	videoram[ega_cursor * 2] = glyph;
		500	videoram[ega_cursor * 2 + 1] = style;
4093	decky	501	}
3844	decky	502	}
		503
4177	decky	504	static void ega_putchar(outdev_t *dev __attribute__((unused)), wchar_t ch, bool silent)
3844	decky	505	{
413	jermar	506	ipl_t ipl;
3844	decky	507
413	jermar	508	ipl = interrupts_disable();
1	jermar	509	spinlock_lock(&egalock);
3844	decky	510
1	jermar	511	switch (ch) {
2065	jermar	512	case '\n':
3940	decky	513	ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS;
2065	jermar	514	break;
		515	case '\t':
		516	ega_cursor = (ega_cursor + 8) - ega_cursor % 8;
4190	decky	517	break;
2065	jermar	518	case '\b':
3940	decky	519	if (ega_cursor % EGA_COLS)
2065	jermar	520	ega_cursor--;
		521	break;
		522	default:
3844	decky	523	ega_display_char(ch, silent);
2065	jermar	524	ega_cursor++;
		525	break;
1473	decky	526	}
1	jermar	527	ega_check_cursor();
3844	decky	528
		529	if (!silent)
		530	ega_move_cursor();
		531
1	jermar	532	spinlock_unlock(&egalock);
413	jermar	533	interrupts_restore(ipl);
1	jermar	534	}
		535
4093	decky	536	static outdev_t ega_console;
		537	static outdev_operations_t ega_ops = {
3844	decky	538	.write = ega_putchar
		539	};
		540
3930	jermar	541	void ega_init(ioport8_t *base, uintptr_t videoram_phys)
1	jermar	542	{
3940	decky	543	/* Initialize the software structure. */
3844	decky	544	ega_base = base;
		545
3940	decky	546	backbuf = (uint8_t *) malloc(EGA_VRAM_SIZE, 0);
3844	decky	547	if (!backbuf)
		548	panic("Unable to allocate backbuffer.");
		549
3940	decky	550	videoram = (uint8_t *) hw_map(videoram_phys, EGA_VRAM_SIZE);
3844	decky	551
3975	decky	552	/* Synchronize the back buffer and cursor position. */
		553	memcpy(backbuf, videoram, EGA_VRAM_SIZE);
		554	ega_sync_cursor();
3844	decky	555
4093	decky	556	outdev_initialize("ega", &ega_console, &ega_ops);
3844	decky	557	stdout = &ega_console;
		558
		559	sysinfo_set_item_val("fb", NULL, true);
		560	sysinfo_set_item_val("fb.kind", NULL, 2);
3940	decky	561	sysinfo_set_item_val("fb.width", NULL, EGA_COLS);
		562	sysinfo_set_item_val("fb.height", NULL, EGA_ROWS);
3844	decky	563	sysinfo_set_item_val("fb.blinking", NULL, true);
		564	sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys);
1	jermar	565	}
1702	cejka	566
3751	svoboda	567	void ega_redraw(void)
		568	{
3940	decky	569	memcpy(videoram, backbuf, EGA_VRAM_SIZE);
3751	svoboda	570	ega_move_cursor();
3975	decky	571	ega_show_cursor();
3751	svoboda	572	}
		573
1754	jermar	574	/** @}
1702	cejka	575	*/

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(root)/trunk/kernel/genarch/src/drivers/ega/ega.c – Rev 4190