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can: c_can: fix race condition in c_can_open()
[linux/fpc-iii.git] / drivers / video / matrox / matroxfb_accel.c
blob8335a6fe303e3ac9e4dd42423e6512f10355daee
1 /*
2 *
3 * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200 and G400
4 *
5 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
6 *
7 * Version: 1.65 2002/08/14
8 *
9 * MTRR stuff: 1998 Tom Rini <trini@kernel.crashing.org>
10 *
11 * Contributors: "menion?" <menion@mindless.com>
12 * Betatesting, fixes, ideas
13 *
14 * "Kurt Garloff" <garloff@suse.de>
15 * Betatesting, fixes, ideas, videomodes, videomodes timmings
16 *
17 * "Tom Rini" <trini@kernel.crashing.org>
18 * MTRR stuff, PPC cleanups, betatesting, fixes, ideas
19 *
20 * "Bibek Sahu" <scorpio@dodds.net>
21 * Access device through readb|w|l and write b|w|l
22 * Extensive debugging stuff
23 *
24 * "Daniel Haun" <haund@usa.net>
25 * Testing, hardware cursor fixes
26 *
27 * "Scott Wood" <sawst46+@pitt.edu>
28 * Fixes
29 *
30 * "Gerd Knorr" <kraxel@goldbach.isdn.cs.tu-berlin.de>
31 * Betatesting
32 *
33 * "Kelly French" <targon@hazmat.com>
34 * "Fernando Herrera" <fherrera@eurielec.etsit.upm.es>
35 * Betatesting, bug reporting
36 *
37 * "Pablo Bianucci" <pbian@pccp.com.ar>
38 * Fixes, ideas, betatesting
39 *
40 * "Inaky Perez Gonzalez" <inaky@peloncho.fis.ucm.es>
41 * Fixes, enhandcements, ideas, betatesting
42 *
43 * "Ryuichi Oikawa" <roikawa@rr.iiij4u.or.jp>
44 * PPC betatesting, PPC support, backward compatibility
45 *
46 * "Paul Womar" <Paul@pwomar.demon.co.uk>
47 * "Owen Waller" <O.Waller@ee.qub.ac.uk>
48 * PPC betatesting
49 *
50 * "Thomas Pornin" <pornin@bolet.ens.fr>
51 * Alpha betatesting
52 *
53 * "Pieter van Leuven" <pvl@iae.nl>
54 * "Ulf Jaenicke-Roessler" <ujr@physik.phy.tu-dresden.de>
55 * G100 testing
56 *
57 * "H. Peter Arvin" <hpa@transmeta.com>
58 * Ideas
59 *
60 * "Cort Dougan" <cort@cs.nmt.edu>
61 * CHRP fixes and PReP cleanup
62 *
63 * "Mark Vojkovich" <mvojkovi@ucsd.edu>
64 * G400 support
65 *
66 * (following author is not in any relation with this code, but his code
67 * is included in this driver)
68 *
69 * Based on framebuffer driver for VBE 2.0 compliant graphic boards
70 * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
71 *
72 * (following author is not in any relation with this code, but his ideas
73 * were used when writing this driver)
74 *
75 * FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
76 *
77 */
78
79 #include "matroxfb_accel.h"
80 #include "matroxfb_DAC1064.h"
81 #include "matroxfb_Ti3026.h"
82 #include "matroxfb_misc.h"
83
84 #define curr_ydstorg(x) ((x)->curr.ydstorg.pixels)
85
86 #define mga_ydstlen(y,l) mga_outl(M_YDSTLEN | M_EXEC, ((y) << 16) | (l))
87
88 static inline void matrox_cfb4_pal(u_int32_t* pal) {
89 unsigned int i;
90
91 for (i = 0; i < 16; i++) {
92 pal[i] = i * 0x11111111U;
93 }
94 }
95
96 static inline void matrox_cfb8_pal(u_int32_t* pal) {
97 unsigned int i;
98
99 for (i = 0; i < 16; i++) {
100 pal[i] = i * 0x01010101U;
101 }
102 }
103
104 static void matroxfb_copyarea(struct fb_info* info, const struct fb_copyarea* area);
105 static void matroxfb_fillrect(struct fb_info* info, const struct fb_fillrect* rect);
106 static void matroxfb_imageblit(struct fb_info* info, const struct fb_image* image);
107 static void matroxfb_cfb4_fillrect(struct fb_info* info, const struct fb_fillrect* rect);
108 static void matroxfb_cfb4_copyarea(struct fb_info* info, const struct fb_copyarea* area);
109
110 void matrox_cfbX_init(struct matrox_fb_info *minfo)
111 {
112 u_int32_t maccess;
113 u_int32_t mpitch;
114 u_int32_t mopmode;
115 int accel;
116
117 DBG(__func__)
118
119 mpitch = minfo->fbcon.var.xres_virtual;
120
121 minfo->fbops.fb_copyarea = cfb_copyarea;
122 minfo->fbops.fb_fillrect = cfb_fillrect;
123 minfo->fbops.fb_imageblit = cfb_imageblit;
124 minfo->fbops.fb_cursor = NULL;
125
126 accel = (minfo->fbcon.var.accel_flags & FB_ACCELF_TEXT) == FB_ACCELF_TEXT;
127
128 switch (minfo->fbcon.var.bits_per_pixel) {
129 case 4: maccess = 0x00000000; /* accelerate as 8bpp video */
130 mpitch = (mpitch >> 1) | 0x8000; /* disable linearization */
131 mopmode = M_OPMODE_4BPP;
132 matrox_cfb4_pal(minfo->cmap);
133 if (accel && !(mpitch & 1)) {
134 minfo->fbops.fb_copyarea = matroxfb_cfb4_copyarea;
135 minfo->fbops.fb_fillrect = matroxfb_cfb4_fillrect;
136 }
137 break;
138 case 8: maccess = 0x00000000;
139 mopmode = M_OPMODE_8BPP;
140 matrox_cfb8_pal(minfo->cmap);
141 if (accel) {
142 minfo->fbops.fb_copyarea = matroxfb_copyarea;
143 minfo->fbops.fb_fillrect = matroxfb_fillrect;
144 minfo->fbops.fb_imageblit = matroxfb_imageblit;
145 }
146 break;
147 case 16: if (minfo->fbcon.var.green.length == 5)
148 maccess = 0xC0000001;
149 else
150 maccess = 0x40000001;
151 mopmode = M_OPMODE_16BPP;
152 if (accel) {
153 minfo->fbops.fb_copyarea = matroxfb_copyarea;
154 minfo->fbops.fb_fillrect = matroxfb_fillrect;
155 minfo->fbops.fb_imageblit = matroxfb_imageblit;
156 }
157 break;
158 case 24: maccess = 0x00000003;
159 mopmode = M_OPMODE_24BPP;
160 if (accel) {
161 minfo->fbops.fb_copyarea = matroxfb_copyarea;
162 minfo->fbops.fb_fillrect = matroxfb_fillrect;
163 minfo->fbops.fb_imageblit = matroxfb_imageblit;
164 }
165 break;
166 case 32: maccess = 0x00000002;
167 mopmode = M_OPMODE_32BPP;
168 if (accel) {
169 minfo->fbops.fb_copyarea = matroxfb_copyarea;
170 minfo->fbops.fb_fillrect = matroxfb_fillrect;
171 minfo->fbops.fb_imageblit = matroxfb_imageblit;
172 }
173 break;
174 default: maccess = 0x00000000;
175 mopmode = 0x00000000;
176 break; /* turn off acceleration!!! */
177 }
178 mga_fifo(8);
179 mga_outl(M_PITCH, mpitch);
180 mga_outl(M_YDSTORG, curr_ydstorg(minfo));
181 if (minfo->capable.plnwt)
182 mga_outl(M_PLNWT, -1);
183 if (minfo->capable.srcorg) {
184 mga_outl(M_SRCORG, 0);
185 mga_outl(M_DSTORG, 0);
186 }
187 mga_outl(M_OPMODE, mopmode);
188 mga_outl(M_CXBNDRY, 0xFFFF0000);
189 mga_outl(M_YTOP, 0);
190 mga_outl(M_YBOT, 0x01FFFFFF);
191 mga_outl(M_MACCESS, maccess);
192 minfo->accel.m_dwg_rect = M_DWG_TRAP | M_DWG_SOLID | M_DWG_ARZERO | M_DWG_SGNZERO | M_DWG_SHIFTZERO;
193 if (isMilleniumII(minfo)) minfo->accel.m_dwg_rect |= M_DWG_TRANSC;
194 minfo->accel.m_opmode = mopmode;
195 }
196
197 EXPORT_SYMBOL(matrox_cfbX_init);
198
199 static void matrox_accel_bmove(struct matrox_fb_info *minfo, int vxres, int sy,
200 int sx, int dy, int dx, int height, int width)
201 {
202 int start, end;
203 CRITFLAGS
204
205 DBG(__func__)
206
207 CRITBEGIN
208
209 if ((dy < sy) || ((dy == sy) && (dx <= sx))) {
210 mga_fifo(2);
211 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_SGNZERO |
212 M_DWG_BFCOL | M_DWG_REPLACE);
213 mga_outl(M_AR5, vxres);
214 width--;
215 start = sy*vxres+sx+curr_ydstorg(minfo);
216 end = start+width;
217 } else {
218 mga_fifo(3);
219 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_BFCOL | M_DWG_REPLACE);
220 mga_outl(M_SGN, 5);
221 mga_outl(M_AR5, -vxres);
222 width--;
223 end = (sy+height-1)*vxres+sx+curr_ydstorg(minfo);
224 start = end+width;
225 dy += height-1;
226 }
227 mga_fifo(4);
228 mga_outl(M_AR0, end);
229 mga_outl(M_AR3, start);
230 mga_outl(M_FXBNDRY, ((dx+width)<<16) | dx);
231 mga_ydstlen(dy, height);
232 WaitTillIdle();
233
234 CRITEND
235 }
236
237 static void matrox_accel_bmove_lin(struct matrox_fb_info *minfo, int vxres,
238 int sy, int sx, int dy, int dx, int height,
239 int width)
240 {
241 int start, end;
242 CRITFLAGS
243
244 DBG(__func__)
245
246 CRITBEGIN
247
248 if ((dy < sy) || ((dy == sy) && (dx <= sx))) {
249 mga_fifo(2);
250 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_SGNZERO |
251 M_DWG_BFCOL | M_DWG_REPLACE);
252 mga_outl(M_AR5, vxres);
253 width--;
254 start = sy*vxres+sx+curr_ydstorg(minfo);
255 end = start+width;
256 } else {
257 mga_fifo(3);
258 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_BFCOL | M_DWG_REPLACE);
259 mga_outl(M_SGN, 5);
260 mga_outl(M_AR5, -vxres);
261 width--;
262 end = (sy+height-1)*vxres+sx+curr_ydstorg(minfo);
263 start = end+width;
264 dy += height-1;
265 }
266 mga_fifo(5);
267 mga_outl(M_AR0, end);
268 mga_outl(M_AR3, start);
269 mga_outl(M_FXBNDRY, ((dx+width)<<16) | dx);
270 mga_outl(M_YDST, dy*vxres >> 5);
271 mga_outl(M_LEN | M_EXEC, height);
272 WaitTillIdle();
273
274 CRITEND
275 }
276
277 static void matroxfb_cfb4_copyarea(struct fb_info* info, const struct fb_copyarea* area) {
278 struct matrox_fb_info *minfo = info2minfo(info);
279
280 if ((area->sx | area->dx | area->width) & 1)
281 cfb_copyarea(info, area);
282 else
283 matrox_accel_bmove_lin(minfo, minfo->fbcon.var.xres_virtual >> 1, area->sy, area->sx >> 1, area->dy, area->dx >> 1, area->height, area->width >> 1);
284 }
285
286 static void matroxfb_copyarea(struct fb_info* info, const struct fb_copyarea* area) {
287 struct matrox_fb_info *minfo = info2minfo(info);
288
289 matrox_accel_bmove(minfo, minfo->fbcon.var.xres_virtual, area->sy, area->sx, area->dy, area->dx, area->height, area->width);
290 }
291
292 static void matroxfb_accel_clear(struct matrox_fb_info *minfo, u_int32_t color,
293 int sy, int sx, int height, int width)
294 {
295 CRITFLAGS
296
297 DBG(__func__)
298
299 CRITBEGIN
300
301 mga_fifo(5);
302 mga_outl(M_DWGCTL, minfo->accel.m_dwg_rect | M_DWG_REPLACE);
303 mga_outl(M_FCOL, color);
304 mga_outl(M_FXBNDRY, ((sx + width) << 16) | sx);
305 mga_ydstlen(sy, height);
306 WaitTillIdle();
307
308 CRITEND
309 }
310
311 static void matroxfb_fillrect(struct fb_info* info, const struct fb_fillrect* rect) {
312 struct matrox_fb_info *minfo = info2minfo(info);
313
314 switch (rect->rop) {
315 case ROP_COPY:
316 matroxfb_accel_clear(minfo, ((u_int32_t *)info->pseudo_palette)[rect->color], rect->dy, rect->dx, rect->height, rect->width);
317 break;
318 }
319 }
320
321 static void matroxfb_cfb4_clear(struct matrox_fb_info *minfo, u_int32_t bgx,
322 int sy, int sx, int height, int width)
323 {
324 int whattodo;
325 CRITFLAGS
326
327 DBG(__func__)
328
329 CRITBEGIN
330
331 whattodo = 0;
332 if (sx & 1) {
333 sx ++;
334 if (!width) return;
335 width --;
336 whattodo = 1;
337 }
338 if (width & 1) {
339 whattodo |= 2;
340 }
341 width >>= 1;
342 sx >>= 1;
343 if (width) {
344 mga_fifo(5);
345 mga_outl(M_DWGCTL, minfo->accel.m_dwg_rect | M_DWG_REPLACE2);
346 mga_outl(M_FCOL, bgx);
347 mga_outl(M_FXBNDRY, ((sx + width) << 16) | sx);
348 mga_outl(M_YDST, sy * minfo->fbcon.var.xres_virtual >> 6);
349 mga_outl(M_LEN | M_EXEC, height);
350 WaitTillIdle();
351 }
352 if (whattodo) {
353 u_int32_t step = minfo->fbcon.var.xres_virtual >> 1;
354 vaddr_t vbase = minfo->video.vbase;
355 if (whattodo & 1) {
356 unsigned int uaddr = sy * step + sx - 1;
357 u_int32_t loop;
358 u_int8_t bgx2 = bgx & 0xF0;
359 for (loop = height; loop > 0; loop --) {
360 mga_writeb(vbase, uaddr, (mga_readb(vbase, uaddr) & 0x0F) | bgx2);
361 uaddr += step;
362 }
363 }
364 if (whattodo & 2) {
365 unsigned int uaddr = sy * step + sx + width;
366 u_int32_t loop;
367 u_int8_t bgx2 = bgx & 0x0F;
368 for (loop = height; loop > 0; loop --) {
369 mga_writeb(vbase, uaddr, (mga_readb(vbase, uaddr) & 0xF0) | bgx2);
370 uaddr += step;
371 }
372 }
373 }
374
375 CRITEND
376 }
377
378 static void matroxfb_cfb4_fillrect(struct fb_info* info, const struct fb_fillrect* rect) {
379 struct matrox_fb_info *minfo = info2minfo(info);
380
381 switch (rect->rop) {
382 case ROP_COPY:
383 matroxfb_cfb4_clear(minfo, ((u_int32_t *)info->pseudo_palette)[rect->color], rect->dy, rect->dx, rect->height, rect->width);
384 break;
385 }
386 }
387
388 static void matroxfb_1bpp_imageblit(struct matrox_fb_info *minfo, u_int32_t fgx,
389 u_int32_t bgx, const u_int8_t *chardata,
390 int width, int height, int yy, int xx)
391 {
392 u_int32_t step;
393 u_int32_t ydstlen;
394 u_int32_t xlen;
395 u_int32_t ar0;
396 u_int32_t charcell;
397 u_int32_t fxbndry;
398 vaddr_t mmio;
399 int easy;
400 CRITFLAGS
401
402 DBG_HEAVY(__func__);
403
404 step = (width + 7) >> 3;
405 charcell = height * step;
406 xlen = (charcell + 3) & ~3;
407 ydstlen = (yy << 16) | height;
408 if (width == step << 3) {
409 ar0 = height * width - 1;
410 easy = 1;
411 } else {
412 ar0 = width - 1;
413 easy = 0;
414 }
415
416 CRITBEGIN
417
418 mga_fifo(3);
419 if (easy)
420 mga_outl(M_DWGCTL, M_DWG_ILOAD | M_DWG_SGNZERO | M_DWG_SHIFTZERO | M_DWG_BMONOWF | M_DWG_LINEAR | M_DWG_REPLACE);
421 else
422 mga_outl(M_DWGCTL, M_DWG_ILOAD | M_DWG_SGNZERO | M_DWG_SHIFTZERO | M_DWG_BMONOWF | M_DWG_REPLACE);
423 mga_outl(M_FCOL, fgx);
424 mga_outl(M_BCOL, bgx);
425 fxbndry = ((xx + width - 1) << 16) | xx;
426 mmio = minfo->mmio.vbase;
427
428 mga_fifo(6);
429 mga_writel(mmio, M_FXBNDRY, fxbndry);
430 mga_writel(mmio, M_AR0, ar0);
431 mga_writel(mmio, M_AR3, 0);
432 if (easy) {
433 mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
434 mga_memcpy_toio(mmio, chardata, xlen);
435 } else {
436 mga_writel(mmio, M_AR5, 0);
437 mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
438 if ((step & 3) == 0) {
439 /* Great. Source has 32bit aligned lines, so we can feed them
440 directly to the accelerator. */
441 mga_memcpy_toio(mmio, chardata, charcell);
442 } else if (step == 1) {
443 /* Special case for 1..8bit widths */
444 while (height--) {
445 #if defined(__BIG_ENDIAN)
446 fb_writel((*chardata) << 24, mmio.vaddr);
447 #else
448 fb_writel(*chardata, mmio.vaddr);
449 #endif
450 chardata++;
451 }
452 } else if (step == 2) {
453 /* Special case for 9..15bit widths */
454 while (height--) {
455 #if defined(__BIG_ENDIAN)
456 fb_writel((*(u_int16_t*)chardata) << 16, mmio.vaddr);
457 #else
458 fb_writel(*(u_int16_t*)chardata, mmio.vaddr);
459 #endif
460 chardata += 2;
461 }
462 } else {
463 /* Tell... well, why bother... */
464 while (height--) {
465 size_t i;
466
467 for (i = 0; i < step; i += 4) {
468 /* Hope that there are at least three readable bytes beyond the end of bitmap */
469 fb_writel(get_unaligned((u_int32_t*)(chardata + i)),mmio.vaddr);
470 }
471 chardata += step;
472 }
473 }
474 }
475 WaitTillIdle();
476 CRITEND
477 }
478
479
480 static void matroxfb_imageblit(struct fb_info* info, const struct fb_image* image) {
481 struct matrox_fb_info *minfo = info2minfo(info);
482
483 DBG_HEAVY(__func__);
484
485 if (image->depth == 1) {
486 u_int32_t fgx, bgx;
487
488 fgx = ((u_int32_t*)info->pseudo_palette)[image->fg_color];
489 bgx = ((u_int32_t*)info->pseudo_palette)[image->bg_color];
490 matroxfb_1bpp_imageblit(minfo, fgx, bgx, image->data, image->width, image->height, image->dy, image->dx);
491 } else {
492 /* Danger! image->depth is useless: logo painting code always
493 passes framebuffer color depth here, although logo data are
494 always 8bpp and info->pseudo_palette is changed to contain
495 logo palette to be used (but only for true/direct-color... sic...).
496 So do it completely in software... */
497 cfb_imageblit(info, image);
498 }
499 }
500
501 MODULE_LICENSE("GPL");
Linux with added FPC-III support