aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/video/sis/sis_accel.c
blob: 7addf91d2feab2068b65b627b52994ef3d42c3ac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
/*
 * SiS 300/540/630[S]/730[S],
 * SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX],
 * XGI V3XT/V5/V8, Z7
 * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3
 *
 * 2D acceleration part
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the named License,
 * or any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
 *
 * Based on the XFree86/X.org driver which is
 *     Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
 *
 * Author: Thomas Winischhofer <thomas@winischhofer.net>
 *			(see http://www.winischhofer.net/
 *			for more information and updates)
 */

#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/types.h>
#include <asm/io.h>

#include "sis.h"
#include "sis_accel.h"

static const u8 sisALUConv[] =
{
    0x00,       /* dest = 0;            0,      GXclear,        0 */
    0x88,       /* dest &= src;         DSa,    GXand,          0x1 */
    0x44,       /* dest = src & ~dest;  SDna,   GXandReverse,   0x2 */
    0xCC,       /* dest = src;          S,      GXcopy,         0x3 */
    0x22,       /* dest &= ~src;        DSna,   GXandInverted,  0x4 */
    0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */
    0x66,       /* dest = ^src;         DSx,    GXxor,          0x6 */
    0xEE,       /* dest |= src;         DSo,    GXor,           0x7 */
    0x11,       /* dest = ~src & ~dest; DSon,   GXnor,          0x8 */
    0x99,       /* dest ^= ~src ;       DSxn,   GXequiv,        0x9 */
    0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */
    0xDD,       /* dest = src|~dest ;   SDno,   GXorReverse,    0xB */
    0x33,       /* dest = ~src;         Sn,     GXcopyInverted, 0xC */
    0xBB,       /* dest |= ~src;        DSno,   GXorInverted,   0xD */
    0x77,       /* dest = ~src|~dest;   DSan,   GXnand,         0xE */
    0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */
};
/* same ROP but with Pattern as Source */
static const u8 sisPatALUConv[] =
{
    0x00,       /* dest = 0;            0,      GXclear,        0 */
    0xA0,       /* dest &= src;         DPa,    GXand,          0x1 */
    0x50,       /* dest = src & ~dest;  PDna,   GXandReverse,   0x2 */
    0xF0,       /* dest = src;          P,      GXcopy,         0x3 */
    0x0A,       /* dest &= ~src;        DPna,   GXandInverted,  0x4 */
    0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */
    0x5A,       /* dest = ^src;         DPx,    GXxor,          0x6 */
    0xFA,       /* dest |= src;         DPo,    GXor,           0x7 */
    0x05,       /* dest = ~src & ~dest; DPon,   GXnor,          0x8 */
    0xA5,       /* dest ^= ~src ;       DPxn,   GXequiv,        0x9 */
    0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */
    0xF5,       /* dest = src|~dest ;   PDno,   GXorReverse,    0xB */
    0x0F,       /* dest = ~src;         Pn,     GXcopyInverted, 0xC */
    0xAF,       /* dest |= ~src;        DPno,   GXorInverted,   0xD */
    0x5F,       /* dest = ~src|~dest;   DPan,   GXnand,         0xE */
    0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */
};

static const int myrops[] = {
   	3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
};

/* 300 series ----------------------------------------------------- */
#ifdef CONFIG_FB_SIS_300
static void
SiS300Sync(struct sis_video_info *ivideo)
{
	SiS300Idle
}

static void
SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,
                                 int rop, int trans_color)
{
	SiS300SetupDSTColorDepth(ivideo->DstColor);
	SiS300SetupSRCPitch(ivideo->video_linelength)
	SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)

	if(trans_color != -1) {
		SiS300SetupROP(0x0A)
		SiS300SetupSRCTrans(trans_color)
		SiS300SetupCMDFlag(TRANSPARENT_BITBLT)
	} else {
	        SiS300SetupROP(sisALUConv[rop])
	}
	if(xdir > 0) {
		SiS300SetupCMDFlag(X_INC)
	}
	if(ydir > 0) {
		SiS300SetupCMDFlag(Y_INC)
	}
}

static void
SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x,
				   int src_y, int dst_x, int dst_y, int width, int height)
{
	u32 srcbase = 0, dstbase = 0;

	if(src_y >= 2048) {
		srcbase = ivideo->video_linelength * src_y;
		src_y = 0;
	}
	if(dst_y >= 2048) {
		dstbase = ivideo->video_linelength * dst_y;
		dst_y = 0;
	}

	SiS300SetupSRCBase(srcbase);
	SiS300SetupDSTBase(dstbase);

	if(!(ivideo->CommandReg & X_INC))  {
		src_x += width-1;
		dst_x += width-1;
	}
	if(!(ivideo->CommandReg & Y_INC))  {
		src_y += height-1;
		dst_y += height-1;
	}
	SiS300SetupRect(width, height)
	SiS300SetupSRCXY(src_x, src_y)
	SiS300SetupDSTXY(dst_x, dst_y)
	SiS300DoCMD
}

static void
SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
{
	SiS300SetupPATFG(color)
	SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
	SiS300SetupDSTColorDepth(ivideo->DstColor);
	SiS300SetupROP(sisPatALUConv[rop])
	SiS300SetupCMDFlag(PATFG)
}

static void
SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
{
	u32 dstbase = 0;

	if(y >= 2048) {
		dstbase = ivideo->video_linelength * y;
		y = 0;
	}
	SiS300SetupDSTBase(dstbase)
	SiS300SetupDSTXY(x,y)
	SiS300SetupRect(w,h)
	SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT)
	SiS300DoCMD
}
#endif

/* 315/330/340 series ---------------------------------------------- */

#ifdef CONFIG_FB_SIS_315
static void
SiS310Sync(struct sis_video_info *ivideo)
{
	SiS310Idle
}

static void
SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color)
{
	SiS310SetupDSTColorDepth(ivideo->DstColor);
	SiS310SetupSRCPitch(ivideo->video_linelength)
	SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
	if(trans_color != -1) {
		SiS310SetupROP(0x0A)
		SiS310SetupSRCTrans(trans_color)
		SiS310SetupCMDFlag(TRANSPARENT_BITBLT)
	} else {
	        SiS310SetupROP(sisALUConv[rop])
		/* Set command - not needed, both 0 */
		/* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */
	}
	SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth)
	/* The chip is smart enough to know the direction */
}

static void
SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,
			 int dst_x, int dst_y, int width, int height)
{
	u32 srcbase = 0, dstbase = 0;
	int mymin = min(src_y, dst_y);
	int mymax = max(src_y, dst_y);

	/* Although the chip knows the direction to use
	 * if the source and destination areas overlap,
	 * that logic fails if we fiddle with the bitmap
	 * addresses. Therefore, we check if the source
	 * and destination blitting areas overlap and
	 * adapt the bitmap addresses synchronously
	 * if the coordinates exceed the valid range.
	 * The the areas do not overlap, we do our
	 * normal check.
	 */
	if((mymax - mymin) < height) {
		if((src_y >= 2048) || (dst_y >= 2048)) {
			srcbase = ivideo->video_linelength * mymin;
			dstbase = ivideo->video_linelength * mymin;
			src_y -= mymin;
			dst_y -= mymin;
		}
	} else {
		if(src_y >= 2048) {
			srcbase = ivideo->video_linelength * src_y;
			src_y = 0;
		}
		if(dst_y >= 2048) {
			dstbase = ivideo->video_linelength * dst_y;
			dst_y = 0;
		}
	}

	srcbase += ivideo->video_offset;
	dstbase += ivideo->video_offset;

	SiS310SetupSRCBase(srcbase);
	SiS310SetupDSTBase(dstbase);
	SiS310SetupRect(width, height)
	SiS310SetupSRCXY(src_x, src_y)
	SiS310SetupDSTXY(dst_x, dst_y)
	SiS310DoCMD
}

static void
SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
{
	SiS310SetupPATFG(color)
	SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
	SiS310SetupDSTColorDepth(ivideo->DstColor);
	SiS310SetupROP(sisPatALUConv[rop])
	SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)
}

static void
SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
{
	u32 dstbase = 0;

	if(y >= 2048) {
		dstbase = ivideo->video_linelength * y;
		y = 0;
	}
	dstbase += ivideo->video_offset;
	SiS310SetupDSTBase(dstbase)
	SiS310SetupDSTXY(x,y)
	SiS310SetupRect(w,h)
	SiS310SetupCMDFlag(BITBLT)
	SiS310DoCMD
}
#endif

/* --------------------------------------------------------------------- */

/* The exported routines */

int sisfb_initaccel(struct sis_video_info *ivideo)
{
#ifdef SISFB_USE_SPINLOCKS
	spin_lock_init(&ivideo->lockaccel);
#endif
	return 0;
}

void sisfb_syncaccel(struct sis_video_info *ivideo)
{
	if(ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
		SiS300Sync(ivideo);
#endif
	} else {
#ifdef CONFIG_FB_SIS_315
		SiS310Sync(ivideo);
#endif
	}
}

int fbcon_sis_sync(struct fb_info *info)
{
	struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
	CRITFLAGS

	if((!ivideo->accel) || (!ivideo->engineok))
		return 0;

	CRITBEGIN
	sisfb_syncaccel(ivideo);
	CRITEND

	return 0;
}

void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
	struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
	u32 col = 0;
	u32 vxres = info->var.xres_virtual;
	u32 vyres = info->var.yres_virtual;
	int width, height;
	CRITFLAGS

	if(info->state != FBINFO_STATE_RUNNING)
		return;

	if((!ivideo->accel) || (!ivideo->engineok)) {
		cfb_fillrect(info, rect);
		return;
	}

	if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)
		return;

	/* Clipping */
	width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;
	height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;

	switch(info->var.bits_per_pixel) {
	case 8:  col = rect->color;
		 break;
	case 16:
	case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
		 break;
	}

	if(ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
		CRITBEGIN
		SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);
		SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
		CRITEND
#endif
	} else {
#ifdef CONFIG_FB_SIS_315
		CRITBEGIN
		SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);
		SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
		CRITEND
#endif
	}

	sisfb_syncaccel(ivideo);
}

void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
	struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
	u32 vxres = info->var.xres_virtual;
	u32 vyres = info->var.yres_virtual;
	int width = area->width;
	int height = area->height;
	CRITFLAGS

	if(info->state != FBINFO_STATE_RUNNING)
		return;

	if((!ivideo->accel) || (!ivideo->engineok)) {
		cfb_copyarea(info, area);
		return;
	}

	if(!width || !height ||
	   area->sx >= vxres || area->sy >= vyres ||
	   area->dx >= vxres || area->dy >= vyres)
		return;

	/* Clipping */
	if((area->sx + width) > vxres) width = vxres - area->sx;
	if((area->dx + width) > vxres) width = vxres - area->dx;
	if((area->sy + height) > vyres) height = vyres - area->sy;
	if((area->dy + height) > vyres) height = vyres - area->dy;

	if(ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
		int xdir, ydir;

		if(area->sx < area->dx) xdir = 0;
		else                    xdir = 1;
		if(area->sy < area->dy) ydir = 0;
		else                    ydir = 1;

		CRITBEGIN
		SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1);
		SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
					area->dx, area->dy, width, height);
		CRITEND
#endif
	} else {
#ifdef CONFIG_FB_SIS_315
		CRITBEGIN
		SiS310SetupForScreenToScreenCopy(ivideo, 3, -1);
		SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
					area->dx, area->dy, width, height);
		CRITEND
#endif
	}

	sisfb_syncaccel(ivideo);
}