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[CPUFREQ] CodingStyle nits in cpufreq_stats.c
[linux/fpc-iii.git] / drivers / video / sis / sis_accel.c
blobbab933e6c6a697ffe8dcd804517b69c8363506b8
1 /*
2 * SiS 300/540/630[S]/730[S],
3 * SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX],
4 * XGI V3XT/V5/V8, Z7
5 * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3
6 *
7 * 2D acceleration part
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the named License,
12 * or any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
22 *
23 * Based on the XFree86/X.org driver which is
24 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
25 *
26 * Author: Thomas Winischhofer <thomas@winischhofer.net>
27 * (see http://www.winischhofer.net/
28 * for more information and updates)
29 */
30
31 #include <linux/config.h>
32 #include <linux/version.h>
33 #include <linux/module.h>
34 #include <linux/kernel.h>
35 #include <linux/fb.h>
36 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
37 #include <linux/console.h>
38 #endif
39 #include <linux/ioport.h>
40 #include <linux/types.h>
41
42 #include <asm/io.h>
43
44 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
45 #include <video/fbcon.h>
46 #include <video/fbcon-cfb8.h>
47 #include <video/fbcon-cfb16.h>
48 #include <video/fbcon-cfb24.h>
49 #include <video/fbcon-cfb32.h>
50 #endif
51
52 #include "sis.h"
53 #include "sis_accel.h"
54
55 static const u8 sisALUConv[] =
56 {
57 0x00, /* dest = 0; 0, GXclear, 0 */
58 0x88, /* dest &= src; DSa, GXand, 0x1 */
59 0x44, /* dest = src & ~dest; SDna, GXandReverse, 0x2 */
60 0xCC, /* dest = src; S, GXcopy, 0x3 */
61 0x22, /* dest &= ~src; DSna, GXandInverted, 0x4 */
62 0xAA, /* dest = dest; D, GXnoop, 0x5 */
63 0x66, /* dest = ^src; DSx, GXxor, 0x6 */
64 0xEE, /* dest |= src; DSo, GXor, 0x7 */
65 0x11, /* dest = ~src & ~dest; DSon, GXnor, 0x8 */
66 0x99, /* dest ^= ~src ; DSxn, GXequiv, 0x9 */
67 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */
68 0xDD, /* dest = src|~dest ; SDno, GXorReverse, 0xB */
69 0x33, /* dest = ~src; Sn, GXcopyInverted, 0xC */
70 0xBB, /* dest |= ~src; DSno, GXorInverted, 0xD */
71 0x77, /* dest = ~src|~dest; DSan, GXnand, 0xE */
72 0xFF, /* dest = 0xFF; 1, GXset, 0xF */
73 };
74 /* same ROP but with Pattern as Source */
75 static const u8 sisPatALUConv[] =
76 {
77 0x00, /* dest = 0; 0, GXclear, 0 */
78 0xA0, /* dest &= src; DPa, GXand, 0x1 */
79 0x50, /* dest = src & ~dest; PDna, GXandReverse, 0x2 */
80 0xF0, /* dest = src; P, GXcopy, 0x3 */
81 0x0A, /* dest &= ~src; DPna, GXandInverted, 0x4 */
82 0xAA, /* dest = dest; D, GXnoop, 0x5 */
83 0x5A, /* dest = ^src; DPx, GXxor, 0x6 */
84 0xFA, /* dest |= src; DPo, GXor, 0x7 */
85 0x05, /* dest = ~src & ~dest; DPon, GXnor, 0x8 */
86 0xA5, /* dest ^= ~src ; DPxn, GXequiv, 0x9 */
87 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */
88 0xF5, /* dest = src|~dest ; PDno, GXorReverse, 0xB */
89 0x0F, /* dest = ~src; Pn, GXcopyInverted, 0xC */
90 0xAF, /* dest |= ~src; DPno, GXorInverted, 0xD */
91 0x5F, /* dest = ~src|~dest; DPan, GXnand, 0xE */
92 0xFF, /* dest = 0xFF; 1, GXset, 0xF */
93 };
94
95 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,34)
96 static const int myrops[] = {
97 3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
98 };
99 #endif
100
101 /* 300 series ----------------------------------------------------- */
102 #ifdef CONFIG_FB_SIS_300
103 static void
104 SiS300Sync(struct sis_video_info *ivideo)
105 {
106 SiS300Idle
107 }
108
109 static void
110 SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,
111 int rop, int trans_color)
112 {
113 SiS300SetupDSTColorDepth(ivideo->DstColor);
114 SiS300SetupSRCPitch(ivideo->video_linelength)
115 SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
116
117 if(trans_color != -1) {
118 SiS300SetupROP(0x0A)
119 SiS300SetupSRCTrans(trans_color)
120 SiS300SetupCMDFlag(TRANSPARENT_BITBLT)
121 } else {
122 SiS300SetupROP(sisALUConv[rop])
123 }
124 if(xdir > 0) {
125 SiS300SetupCMDFlag(X_INC)
126 }
127 if(ydir > 0) {
128 SiS300SetupCMDFlag(Y_INC)
129 }
130 }
131
132 static void
133 SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x,
134 int src_y, int dst_x, int dst_y, int width, int height)
135 {
136 u32 srcbase = 0, dstbase = 0;
137
138 if(src_y >= 2048) {
139 srcbase = ivideo->video_linelength * src_y;
140 src_y = 0;
141 }
142 if(dst_y >= 2048) {
143 dstbase = ivideo->video_linelength * dst_y;
144 dst_y = 0;
145 }
146
147 SiS300SetupSRCBase(srcbase);
148 SiS300SetupDSTBase(dstbase);
149
150 if(!(ivideo->CommandReg & X_INC)) {
151 src_x += width-1;
152 dst_x += width-1;
153 }
154 if(!(ivideo->CommandReg & Y_INC)) {
155 src_y += height-1;
156 dst_y += height-1;
157 }
158 SiS300SetupRect(width, height)
159 SiS300SetupSRCXY(src_x, src_y)
160 SiS300SetupDSTXY(dst_x, dst_y)
161 SiS300DoCMD
162 }
163
164 static void
165 SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
166 {
167 SiS300SetupPATFG(color)
168 SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
169 SiS300SetupDSTColorDepth(ivideo->DstColor);
170 SiS300SetupROP(sisPatALUConv[rop])
171 SiS300SetupCMDFlag(PATFG)
172 }
173
174 static void
175 SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
176 {
177 u32 dstbase = 0;
178
179 if(y >= 2048) {
180 dstbase = ivideo->video_linelength * y;
181 y = 0;
182 }
183 SiS300SetupDSTBase(dstbase)
184 SiS300SetupDSTXY(x,y)
185 SiS300SetupRect(w,h)
186 SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT)
187 SiS300DoCMD
188 }
189 #endif
190
191 /* 315/330/340 series ---------------------------------------------- */
192
193 #ifdef CONFIG_FB_SIS_315
194 static void
195 SiS310Sync(struct sis_video_info *ivideo)
196 {
197 SiS310Idle
198 }
199
200 static void
201 SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color)
202 {
203 SiS310SetupDSTColorDepth(ivideo->DstColor);
204 SiS310SetupSRCPitch(ivideo->video_linelength)
205 SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
206 if(trans_color != -1) {
207 SiS310SetupROP(0x0A)
208 SiS310SetupSRCTrans(trans_color)
209 SiS310SetupCMDFlag(TRANSPARENT_BITBLT)
210 } else {
211 SiS310SetupROP(sisALUConv[rop])
212 /* Set command - not needed, both 0 */
213 /* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */
214 }
215 SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth)
216 /* The chip is smart enough to know the direction */
217 }
218
219 static void
220 SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,
221 int dst_x, int dst_y, int width, int height)
222 {
223 u32 srcbase = 0, dstbase = 0;
224 int mymin = min(src_y, dst_y);
225 int mymax = max(src_y, dst_y);
226
227 /* Although the chip knows the direction to use
228 * if the source and destination areas overlap,
229 * that logic fails if we fiddle with the bitmap
230 * addresses. Therefore, we check if the source
231 * and destination blitting areas overlap and
232 * adapt the bitmap addresses synchronously
233 * if the coordinates exceed the valid range.
234 * The the areas do not overlap, we do our
235 * normal check.
236 */
237 if((mymax - mymin) < height) {
238 if((src_y >= 2048) || (dst_y >= 2048)) {
239 srcbase = ivideo->video_linelength * mymin;
240 dstbase = ivideo->video_linelength * mymin;
241 src_y -= mymin;
242 dst_y -= mymin;
243 }
244 } else {
245 if(src_y >= 2048) {
246 srcbase = ivideo->video_linelength * src_y;
247 src_y = 0;
248 }
249 if(dst_y >= 2048) {
250 dstbase = ivideo->video_linelength * dst_y;
251 dst_y = 0;
252 }
253 }
254
255 srcbase += ivideo->video_offset;
256 dstbase += ivideo->video_offset;
257
258 SiS310SetupSRCBase(srcbase);
259 SiS310SetupDSTBase(dstbase);
260 SiS310SetupRect(width, height)
261 SiS310SetupSRCXY(src_x, src_y)
262 SiS310SetupDSTXY(dst_x, dst_y)
263 SiS310DoCMD
264 }
265
266 static void
267 SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
268 {
269 SiS310SetupPATFG(color)
270 SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
271 SiS310SetupDSTColorDepth(ivideo->DstColor);
272 SiS310SetupROP(sisPatALUConv[rop])
273 SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)
274 }
275
276 static void
277 SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
278 {
279 u32 dstbase = 0;
280
281 if(y >= 2048) {
282 dstbase = ivideo->video_linelength * y;
283 y = 0;
284 }
285 dstbase += ivideo->video_offset;
286 SiS310SetupDSTBase(dstbase)
287 SiS310SetupDSTXY(x,y)
288 SiS310SetupRect(w,h)
289 SiS310SetupCMDFlag(BITBLT)
290 SiS310DoCMD
291 }
292 #endif
293
294 /* --------------------------------------------------------------------- */
295
296 /* The exported routines */
297
298 int sisfb_initaccel(struct sis_video_info *ivideo)
299 {
300 #ifdef SISFB_USE_SPINLOCKS
301 spin_lock_init(&ivideo->lockaccel);
302 #endif
303 return 0;
304 }
305
306 void sisfb_syncaccel(struct sis_video_info *ivideo)
307 {
308 if(ivideo->sisvga_engine == SIS_300_VGA) {
309 #ifdef CONFIG_FB_SIS_300
310 SiS300Sync(ivideo);
311 #endif
312 } else {
313 #ifdef CONFIG_FB_SIS_315
314 SiS310Sync(ivideo);
315 #endif
316 }
317 }
318
319 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) /* --------------- 2.5 --------------- */
320
321 int fbcon_sis_sync(struct fb_info *info)
322 {
323 struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
324 CRITFLAGS
325
326 if((!ivideo->accel) || (!ivideo->engineok))
327 return 0;
328
329 CRITBEGIN
330 sisfb_syncaccel(ivideo);
331 CRITEND
332
333 return 0;
334 }
335
336 void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
337 {
338 struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
339 u32 col = 0;
340 u32 vxres = info->var.xres_virtual;
341 u32 vyres = info->var.yres_virtual;
342 int width, height;
343 CRITFLAGS
344
345 if(info->state != FBINFO_STATE_RUNNING)
346 return;
347
348 if((!ivideo->accel) || (!ivideo->engineok)) {
349 cfb_fillrect(info, rect);
350 return;
351 }
352
353 if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)
354 return;
355
356 /* Clipping */
357 width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;
358 height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;
359
360 switch(info->var.bits_per_pixel) {
361 case 8: col = rect->color;
362 break;
363 case 16:
364 case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
365 break;
366 }
367
368 if(ivideo->sisvga_engine == SIS_300_VGA) {
369 #ifdef CONFIG_FB_SIS_300
370 CRITBEGIN
371 SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);
372 SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
373 CRITEND
374 #endif
375 } else {
376 #ifdef CONFIG_FB_SIS_315
377 CRITBEGIN
378 SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);
379 SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
380 CRITEND
381 #endif
382 }
383
384 sisfb_syncaccel(ivideo);
385 }
386
387 void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
388 {
389 struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
390 u32 vxres = info->var.xres_virtual;
391 u32 vyres = info->var.yres_virtual;
392 int width = area->width;
393 int height = area->height;
394 CRITFLAGS
395
396 if(info->state != FBINFO_STATE_RUNNING)
397 return;
398
399 if((!ivideo->accel) || (!ivideo->engineok)) {
400 cfb_copyarea(info, area);
401 return;
402 }
403
404 if(!width || !height ||
405 area->sx >= vxres || area->sy >= vyres ||
406 area->dx >= vxres || area->dy >= vyres)
407 return;
408
409 /* Clipping */
410 if((area->sx + width) > vxres) width = vxres - area->sx;
411 if((area->dx + width) > vxres) width = vxres - area->dx;
412 if((area->sy + height) > vyres) height = vyres - area->sy;
413 if((area->dy + height) > vyres) height = vyres - area->dy;
414
415 if(ivideo->sisvga_engine == SIS_300_VGA) {
416 #ifdef CONFIG_FB_SIS_300
417 int xdir, ydir;
418
419 if(area->sx < area->dx) xdir = 0;
420 else xdir = 1;
421 if(area->sy < area->dy) ydir = 0;
422 else ydir = 1;
423
424 CRITBEGIN
425 SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1);
426 SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
427 area->dx, area->dy, width, height);
428 CRITEND
429 #endif
430 } else {
431 #ifdef CONFIG_FB_SIS_315
432 CRITBEGIN
433 SiS310SetupForScreenToScreenCopy(ivideo, 3, -1);
434 SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
435 area->dx, area->dy, width, height);
436 CRITEND
437 #endif
438 }
439
440 sisfb_syncaccel(ivideo);
441 }
442
443 #endif
444
445 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) /* -------------- 2.4 --------------- */
446
447 #include "sisfb_accel_2_4.h"
448
449 #endif /* KERNEL VERSION */
450
451
Linux with added FPC-III support