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OMAP3 PM: CPUFreq driver for OMAP3
[linux-ginger.git] / drivers / video / pm3fb.c
blob6666f45a2f8ce56e03f8ecb962caad73e5b7abdd
1 /*
2 * linux/drivers/video/pm3fb.c -- 3DLabs Permedia3 frame buffer device
3 *
4 * Copyright (C) 2001 Romain Dolbeau <romain@dolbeau.org>.
5 *
6 * Ported to 2.6 kernel on 1 May 2007 by Krzysztof Helt <krzysztof.h1@wp.pl>
7 * based on pm2fb.c
8 *
9 * Based on code written by:
10 * Sven Luther, <luther@dpt-info.u-strasbg.fr>
11 * Alan Hourihane, <alanh@fairlite.demon.co.uk>
12 * Russell King, <rmk@arm.linux.org.uk>
13 * Based on linux/drivers/video/skeletonfb.c:
14 * Copyright (C) 1997 Geert Uytterhoeven
15 * Based on linux/driver/video/pm2fb.c:
16 * Copyright (C) 1998-1999 Ilario Nardinocchi (nardinoc@CS.UniBO.IT)
17 * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
18 *
19 * This file is subject to the terms and conditions of the GNU General Public
20 * License. See the file COPYING in the main directory of this archive for
21 * more details.
22 *
23 */
24
25 #include <linux/module.h>
26 #include <linux/kernel.h>
27 #include <linux/errno.h>
28 #include <linux/string.h>
29 #include <linux/mm.h>
30 #include <linux/slab.h>
31 #include <linux/delay.h>
32 #include <linux/fb.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #ifdef CONFIG_MTRR
36 #include <asm/mtrr.h>
37 #endif
38
39 #include <video/pm3fb.h>
40
41 #if !defined(CONFIG_PCI)
42 #error "Only generic PCI cards supported."
43 #endif
44
45 #undef PM3FB_MASTER_DEBUG
46 #ifdef PM3FB_MASTER_DEBUG
47 #define DPRINTK(a, b...) \
48 printk(KERN_DEBUG "pm3fb: %s: " a, __func__ , ## b)
49 #else
50 #define DPRINTK(a, b...)
51 #endif
52
53 #define PM3_PIXMAP_SIZE (2048 * 4)
54
55 /*
56 * Driver data
57 */
58 static int hwcursor = 1;
59 static char *mode_option __devinitdata;
60 static int noaccel __devinitdata;
61
62 /* mtrr option */
63 #ifdef CONFIG_MTRR
64 static int nomtrr __devinitdata;
65 #endif
66
67 /*
68 * This structure defines the hardware state of the graphics card. Normally
69 * you place this in a header file in linux/include/video. This file usually
70 * also includes register information. That allows other driver subsystems
71 * and userland applications the ability to use the same header file to
72 * avoid duplicate work and easy porting of software.
73 */
74 struct pm3_par {
75 unsigned char __iomem *v_regs;/* virtual address of p_regs */
76 u32 video; /* video flags before blanking */
77 u32 base; /* screen base in 128 bits unit */
78 u32 palette[16];
79 int mtrr_handle;
80 };
81
82 /*
83 * Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo
84 * if we don't use modedb. If we do use modedb see pm3fb_init how to use it
85 * to get a fb_var_screeninfo. Otherwise define a default var as well.
86 */
87 static struct fb_fix_screeninfo pm3fb_fix __devinitdata = {
88 .id = "Permedia3",
89 .type = FB_TYPE_PACKED_PIXELS,
90 .visual = FB_VISUAL_PSEUDOCOLOR,
91 .xpanstep = 1,
92 .ypanstep = 1,
93 .ywrapstep = 0,
94 .accel = FB_ACCEL_3DLABS_PERMEDIA3,
95 };
96
97 /*
98 * Utility functions
99 */
100
101 static inline u32 PM3_READ_REG(struct pm3_par *par, s32 off)
102 {
103 return fb_readl(par->v_regs + off);
104 }
105
106 static inline void PM3_WRITE_REG(struct pm3_par *par, s32 off, u32 v)
107 {
108 fb_writel(v, par->v_regs + off);
109 }
110
111 static inline void PM3_WAIT(struct pm3_par *par, u32 n)
112 {
113 while (PM3_READ_REG(par, PM3InFIFOSpace) < n)
114 cpu_relax();
115 }
116
117 static inline void PM3_WRITE_DAC_REG(struct pm3_par *par, unsigned r, u8 v)
118 {
119 PM3_WAIT(par, 3);
120 PM3_WRITE_REG(par, PM3RD_IndexHigh, (r >> 8) & 0xff);
121 PM3_WRITE_REG(par, PM3RD_IndexLow, r & 0xff);
122 wmb();
123 PM3_WRITE_REG(par, PM3RD_IndexedData, v);
124 wmb();
125 }
126
127 static inline void pm3fb_set_color(struct pm3_par *par, unsigned char regno,
128 unsigned char r, unsigned char g, unsigned char b)
129 {
130 PM3_WAIT(par, 4);
131 PM3_WRITE_REG(par, PM3RD_PaletteWriteAddress, regno);
132 wmb();
133 PM3_WRITE_REG(par, PM3RD_PaletteData, r);
134 wmb();
135 PM3_WRITE_REG(par, PM3RD_PaletteData, g);
136 wmb();
137 PM3_WRITE_REG(par, PM3RD_PaletteData, b);
138 wmb();
139 }
140
141 static void pm3fb_clear_colormap(struct pm3_par *par,
142 unsigned char r, unsigned char g, unsigned char b)
143 {
144 int i;
145
146 for (i = 0; i < 256 ; i++)
147 pm3fb_set_color(par, i, r, g, b);
148
149 }
150
151 /* Calculating various clock parameters */
152 static void pm3fb_calculate_clock(unsigned long reqclock,
153 unsigned char *prescale,
154 unsigned char *feedback,
155 unsigned char *postscale)
156 {
157 int f, pre, post;
158 unsigned long freq;
159 long freqerr = 1000;
160 long currerr;
161
162 for (f = 1; f < 256; f++) {
163 for (pre = 1; pre < 256; pre++) {
164 for (post = 0; post < 5; post++) {
165 freq = ((2*PM3_REF_CLOCK * f) >> post) / pre;
166 currerr = (reqclock > freq)
167 ? reqclock - freq
168 : freq - reqclock;
169 if (currerr < freqerr) {
170 freqerr = currerr;
171 *feedback = f;
172 *prescale = pre;
173 *postscale = post;
174 }
175 }
176 }
177 }
178 }
179
180 static inline int pm3fb_depth(const struct fb_var_screeninfo *var)
181 {
182 if (var->bits_per_pixel == 16)
183 return var->red.length + var->green.length
184 + var->blue.length;
185
186 return var->bits_per_pixel;
187 }
188
189 static inline int pm3fb_shift_bpp(unsigned bpp, int v)
190 {
191 switch (bpp) {
192 case 8:
193 return (v >> 4);
194 case 16:
195 return (v >> 3);
196 case 32:
197 return (v >> 2);
198 }
199 DPRINTK("Unsupported depth %u\n", bpp);
200 return 0;
201 }
202
203 /* acceleration */
204 static int pm3fb_sync(struct fb_info *info)
205 {
206 struct pm3_par *par = info->par;
207
208 PM3_WAIT(par, 2);
209 PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync);
210 PM3_WRITE_REG(par, PM3Sync, 0);
211 mb();
212 do {
213 while ((PM3_READ_REG(par, PM3OutFIFOWords)) == 0)
214 cpu_relax();
215 } while ((PM3_READ_REG(par, PM3OutputFifo)) != PM3Sync_Tag);
216
217 return 0;
218 }
219
220 static void pm3fb_init_engine(struct fb_info *info)
221 {
222 struct pm3_par *par = info->par;
223 const u32 width = (info->var.xres_virtual + 7) & ~7;
224
225 PM3_WAIT(par, 50);
226 PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync);
227 PM3_WRITE_REG(par, PM3StatisticMode, 0x0);
228 PM3_WRITE_REG(par, PM3DeltaMode, 0x0);
229 PM3_WRITE_REG(par, PM3RasterizerMode, 0x0);
230 PM3_WRITE_REG(par, PM3ScissorMode, 0x0);
231 PM3_WRITE_REG(par, PM3LineStippleMode, 0x0);
232 PM3_WRITE_REG(par, PM3AreaStippleMode, 0x0);
233 PM3_WRITE_REG(par, PM3GIDMode, 0x0);
234 PM3_WRITE_REG(par, PM3DepthMode, 0x0);
235 PM3_WRITE_REG(par, PM3StencilMode, 0x0);
236 PM3_WRITE_REG(par, PM3StencilData, 0x0);
237 PM3_WRITE_REG(par, PM3ColorDDAMode, 0x0);
238 PM3_WRITE_REG(par, PM3TextureCoordMode, 0x0);
239 PM3_WRITE_REG(par, PM3TextureIndexMode0, 0x0);
240 PM3_WRITE_REG(par, PM3TextureIndexMode1, 0x0);
241 PM3_WRITE_REG(par, PM3TextureReadMode, 0x0);
242 PM3_WRITE_REG(par, PM3LUTMode, 0x0);
243 PM3_WRITE_REG(par, PM3TextureFilterMode, 0x0);
244 PM3_WRITE_REG(par, PM3TextureCompositeMode, 0x0);
245 PM3_WRITE_REG(par, PM3TextureApplicationMode, 0x0);
246 PM3_WRITE_REG(par, PM3TextureCompositeColorMode1, 0x0);
247 PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode1, 0x0);
248 PM3_WRITE_REG(par, PM3TextureCompositeColorMode0, 0x0);
249 PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode0, 0x0);
250 PM3_WRITE_REG(par, PM3FogMode, 0x0);
251 PM3_WRITE_REG(par, PM3ChromaTestMode, 0x0);
252 PM3_WRITE_REG(par, PM3AlphaTestMode, 0x0);
253 PM3_WRITE_REG(par, PM3AntialiasMode, 0x0);
254 PM3_WRITE_REG(par, PM3YUVMode, 0x0);
255 PM3_WRITE_REG(par, PM3AlphaBlendColorMode, 0x0);
256 PM3_WRITE_REG(par, PM3AlphaBlendAlphaMode, 0x0);
257 PM3_WRITE_REG(par, PM3DitherMode, 0x0);
258 PM3_WRITE_REG(par, PM3LogicalOpMode, 0x0);
259 PM3_WRITE_REG(par, PM3RouterMode, 0x0);
260 PM3_WRITE_REG(par, PM3Window, 0x0);
261
262 PM3_WRITE_REG(par, PM3Config2D, 0x0);
263
264 PM3_WRITE_REG(par, PM3SpanColorMask, 0xffffffff);
265
266 PM3_WRITE_REG(par, PM3XBias, 0x0);
267 PM3_WRITE_REG(par, PM3YBias, 0x0);
268 PM3_WRITE_REG(par, PM3DeltaControl, 0x0);
269
270 PM3_WRITE_REG(par, PM3BitMaskPattern, 0xffffffff);
271
272 PM3_WRITE_REG(par, PM3FBDestReadEnables,
273 PM3FBDestReadEnables_E(0xff) |
274 PM3FBDestReadEnables_R(0xff) |
275 PM3FBDestReadEnables_ReferenceAlpha(0xff));
276 PM3_WRITE_REG(par, PM3FBDestReadBufferAddr0, 0x0);
277 PM3_WRITE_REG(par, PM3FBDestReadBufferOffset0, 0x0);
278 PM3_WRITE_REG(par, PM3FBDestReadBufferWidth0,
279 PM3FBDestReadBufferWidth_Width(width));
280
281 PM3_WRITE_REG(par, PM3FBDestReadMode,
282 PM3FBDestReadMode_ReadEnable |
283 PM3FBDestReadMode_Enable0);
284 PM3_WRITE_REG(par, PM3FBSourceReadBufferAddr, 0x0);
285 PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset, 0x0);
286 PM3_WRITE_REG(par, PM3FBSourceReadBufferWidth,
287 PM3FBSourceReadBufferWidth_Width(width));
288 PM3_WRITE_REG(par, PM3FBSourceReadMode,
289 PM3FBSourceReadMode_Blocking |
290 PM3FBSourceReadMode_ReadEnable);
291
292 PM3_WAIT(par, 2);
293 {
294 /* invert bits in bitmask */
295 unsigned long rm = 1 | (3 << 7);
296 switch (info->var.bits_per_pixel) {
297 case 8:
298 PM3_WRITE_REG(par, PM3PixelSize,
299 PM3PixelSize_GLOBAL_8BIT);
300 #ifdef __BIG_ENDIAN
301 rm |= 3 << 15;
302 #endif
303 break;
304 case 16:
305 PM3_WRITE_REG(par, PM3PixelSize,
306 PM3PixelSize_GLOBAL_16BIT);
307 #ifdef __BIG_ENDIAN
308 rm |= 2 << 15;
309 #endif
310 break;
311 case 32:
312 PM3_WRITE_REG(par, PM3PixelSize,
313 PM3PixelSize_GLOBAL_32BIT);
314 break;
315 default:
316 DPRINTK(1, "Unsupported depth %d\n",
317 info->var.bits_per_pixel);
318 break;
319 }
320 PM3_WRITE_REG(par, PM3RasterizerMode, rm);
321 }
322
323 PM3_WAIT(par, 20);
324 PM3_WRITE_REG(par, PM3FBSoftwareWriteMask, 0xffffffff);
325 PM3_WRITE_REG(par, PM3FBHardwareWriteMask, 0xffffffff);
326 PM3_WRITE_REG(par, PM3FBWriteMode,
327 PM3FBWriteMode_WriteEnable |
328 PM3FBWriteMode_OpaqueSpan |
329 PM3FBWriteMode_Enable0);
330 PM3_WRITE_REG(par, PM3FBWriteBufferAddr0, 0x0);
331 PM3_WRITE_REG(par, PM3FBWriteBufferOffset0, 0x0);
332 PM3_WRITE_REG(par, PM3FBWriteBufferWidth0,
333 PM3FBWriteBufferWidth_Width(width));
334
335 PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 0x0);
336 {
337 /* size in lines of FB */
338 unsigned long sofb = info->screen_size /
339 info->fix.line_length;
340 if (sofb > 4095)
341 PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 4095);
342 else
343 PM3_WRITE_REG(par, PM3SizeOfFramebuffer, sofb);
344
345 switch (info->var.bits_per_pixel) {
346 case 8:
347 PM3_WRITE_REG(par, PM3DitherMode,
348 (1 << 10) | (2 << 3));
349 break;
350 case 16:
351 PM3_WRITE_REG(par, PM3DitherMode,
352 (1 << 10) | (1 << 3));
353 break;
354 case 32:
355 PM3_WRITE_REG(par, PM3DitherMode,
356 (1 << 10) | (0 << 3));
357 break;
358 default:
359 DPRINTK(1, "Unsupported depth %d\n",
360 info->current_par->depth);
361 break;
362 }
363 }
364
365 PM3_WRITE_REG(par, PM3dXDom, 0x0);
366 PM3_WRITE_REG(par, PM3dXSub, 0x0);
367 PM3_WRITE_REG(par, PM3dY, 1 << 16);
368 PM3_WRITE_REG(par, PM3StartXDom, 0x0);
369 PM3_WRITE_REG(par, PM3StartXSub, 0x0);
370 PM3_WRITE_REG(par, PM3StartY, 0x0);
371 PM3_WRITE_REG(par, PM3Count, 0x0);
372
373 /* Disable LocalBuffer. better safe than sorry */
374 PM3_WRITE_REG(par, PM3LBDestReadMode, 0x0);
375 PM3_WRITE_REG(par, PM3LBDestReadEnables, 0x0);
376 PM3_WRITE_REG(par, PM3LBSourceReadMode, 0x0);
377 PM3_WRITE_REG(par, PM3LBWriteMode, 0x0);
378
379 pm3fb_sync(info);
380 }
381
382 static void pm3fb_fillrect(struct fb_info *info,
383 const struct fb_fillrect *region)
384 {
385 struct pm3_par *par = info->par;
386 struct fb_fillrect modded;
387 int vxres, vyres;
388 int rop;
389 u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ?
390 ((u32 *)info->pseudo_palette)[region->color] : region->color;
391
392 if (info->state != FBINFO_STATE_RUNNING)
393 return;
394 if (info->flags & FBINFO_HWACCEL_DISABLED) {
395 cfb_fillrect(info, region);
396 return;
397 }
398 if (region->rop == ROP_COPY )
399 rop = PM3Config2D_ForegroundROP(0x3); /* GXcopy */
400 else
401 rop = PM3Config2D_ForegroundROP(0x6) | /* GXxor */
402 PM3Config2D_FBDestReadEnable;
403
404 vxres = info->var.xres_virtual;
405 vyres = info->var.yres_virtual;
406
407 memcpy(&modded, region, sizeof(struct fb_fillrect));
408
409 if (!modded.width || !modded.height ||
410 modded.dx >= vxres || modded.dy >= vyres)
411 return;
412
413 if (modded.dx + modded.width > vxres)
414 modded.width = vxres - modded.dx;
415 if (modded.dy + modded.height > vyres)
416 modded.height = vyres - modded.dy;
417
418 if (info->var.bits_per_pixel == 8)
419 color |= color << 8;
420 if (info->var.bits_per_pixel <= 16)
421 color |= color << 16;
422
423 PM3_WAIT(par, 4);
424 /* ROP Ox3 is GXcopy */
425 PM3_WRITE_REG(par, PM3Config2D,
426 PM3Config2D_UseConstantSource |
427 PM3Config2D_ForegroundROPEnable |
428 rop |
429 PM3Config2D_FBWriteEnable);
430
431 PM3_WRITE_REG(par, PM3ForegroundColor, color);
432
433 PM3_WRITE_REG(par, PM3RectanglePosition,
434 PM3RectanglePosition_XOffset(modded.dx) |
435 PM3RectanglePosition_YOffset(modded.dy));
436
437 PM3_WRITE_REG(par, PM3Render2D,
438 PM3Render2D_XPositive |
439 PM3Render2D_YPositive |
440 PM3Render2D_Operation_Normal |
441 PM3Render2D_SpanOperation |
442 PM3Render2D_Width(modded.width) |
443 PM3Render2D_Height(modded.height));
444 }
445
446 static void pm3fb_copyarea(struct fb_info *info,
447 const struct fb_copyarea *area)
448 {
449 struct pm3_par *par = info->par;
450 struct fb_copyarea modded;
451 u32 vxres, vyres;
452 int x_align, o_x, o_y;
453
454 if (info->state != FBINFO_STATE_RUNNING)
455 return;
456 if (info->flags & FBINFO_HWACCEL_DISABLED) {
457 cfb_copyarea(info, area);
458 return;
459 }
460
461 memcpy(&modded, area, sizeof(struct fb_copyarea));
462
463 vxres = info->var.xres_virtual;
464 vyres = info->var.yres_virtual;
465
466 if (!modded.width || !modded.height ||
467 modded.sx >= vxres || modded.sy >= vyres ||
468 modded.dx >= vxres || modded.dy >= vyres)
469 return;
470
471 if (modded.sx + modded.width > vxres)
472 modded.width = vxres - modded.sx;
473 if (modded.dx + modded.width > vxres)
474 modded.width = vxres - modded.dx;
475 if (modded.sy + modded.height > vyres)
476 modded.height = vyres - modded.sy;
477 if (modded.dy + modded.height > vyres)
478 modded.height = vyres - modded.dy;
479
480 o_x = modded.sx - modded.dx; /*(sx > dx ) ? (sx - dx) : (dx - sx); */
481 o_y = modded.sy - modded.dy; /*(sy > dy ) ? (sy - dy) : (dy - sy); */
482
483 x_align = (modded.sx & 0x1f);
484
485 PM3_WAIT(par, 6);
486
487 PM3_WRITE_REG(par, PM3Config2D,
488 PM3Config2D_UserScissorEnable |
489 PM3Config2D_ForegroundROPEnable |
490 PM3Config2D_Blocking |
491 PM3Config2D_ForegroundROP(0x3) | /* Ox3 is GXcopy */
492 PM3Config2D_FBWriteEnable);
493
494 PM3_WRITE_REG(par, PM3ScissorMinXY,
495 ((modded.dy & 0x0fff) << 16) | (modded.dx & 0x0fff));
496 PM3_WRITE_REG(par, PM3ScissorMaxXY,
497 (((modded.dy + modded.height) & 0x0fff) << 16) |
498 ((modded.dx + modded.width) & 0x0fff));
499
500 PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset,
501 PM3FBSourceReadBufferOffset_XOffset(o_x) |
502 PM3FBSourceReadBufferOffset_YOffset(o_y));
503
504 PM3_WRITE_REG(par, PM3RectanglePosition,
505 PM3RectanglePosition_XOffset(modded.dx - x_align) |
506 PM3RectanglePosition_YOffset(modded.dy));
507
508 PM3_WRITE_REG(par, PM3Render2D,
509 ((modded.sx > modded.dx) ? PM3Render2D_XPositive : 0) |
510 ((modded.sy > modded.dy) ? PM3Render2D_YPositive : 0) |
511 PM3Render2D_Operation_Normal |
512 PM3Render2D_SpanOperation |
513 PM3Render2D_FBSourceReadEnable |
514 PM3Render2D_Width(modded.width + x_align) |
515 PM3Render2D_Height(modded.height));
516 }
517
518 static void pm3fb_imageblit(struct fb_info *info, const struct fb_image *image)
519 {
520 struct pm3_par *par = info->par;
521 u32 height = image->height;
522 u32 fgx, bgx;
523 const u32 *src = (const u32 *)image->data;
524
525 if (info->state != FBINFO_STATE_RUNNING)
526 return;
527 if (info->flags & FBINFO_HWACCEL_DISABLED) {
528 cfb_imageblit(info, image);
529 return;
530 }
531 switch (info->fix.visual) {
532 case FB_VISUAL_PSEUDOCOLOR:
533 fgx = image->fg_color;
534 bgx = image->bg_color;
535 break;
536 case FB_VISUAL_TRUECOLOR:
537 default:
538 fgx = par->palette[image->fg_color];
539 bgx = par->palette[image->bg_color];
540 break;
541 }
542 if (image->depth != 1) {
543 cfb_imageblit(info, image);
544 return;
545 }
546
547 if (info->var.bits_per_pixel == 8) {
548 fgx |= fgx << 8;
549 bgx |= bgx << 8;
550 }
551 if (info->var.bits_per_pixel <= 16) {
552 fgx |= fgx << 16;
553 bgx |= bgx << 16;
554 }
555
556 PM3_WAIT(par, 7);
557
558 PM3_WRITE_REG(par, PM3ForegroundColor, fgx);
559 PM3_WRITE_REG(par, PM3BackgroundColor, bgx);
560
561 /* ROP Ox3 is GXcopy */
562 PM3_WRITE_REG(par, PM3Config2D,
563 PM3Config2D_UserScissorEnable |
564 PM3Config2D_UseConstantSource |
565 PM3Config2D_ForegroundROPEnable |
566 PM3Config2D_ForegroundROP(0x3) |
567 PM3Config2D_OpaqueSpan |
568 PM3Config2D_FBWriteEnable);
569 PM3_WRITE_REG(par, PM3ScissorMinXY,
570 ((image->dy & 0x0fff) << 16) | (image->dx & 0x0fff));
571 PM3_WRITE_REG(par, PM3ScissorMaxXY,
572 (((image->dy + image->height) & 0x0fff) << 16) |
573 ((image->dx + image->width) & 0x0fff));
574 PM3_WRITE_REG(par, PM3RectanglePosition,
575 PM3RectanglePosition_XOffset(image->dx) |
576 PM3RectanglePosition_YOffset(image->dy));
577 PM3_WRITE_REG(par, PM3Render2D,
578 PM3Render2D_XPositive |
579 PM3Render2D_YPositive |
580 PM3Render2D_Operation_SyncOnBitMask |
581 PM3Render2D_SpanOperation |
582 PM3Render2D_Width(image->width) |
583 PM3Render2D_Height(image->height));
584
585
586 while (height--) {
587 int width = ((image->width + 7) >> 3)
588 + info->pixmap.scan_align - 1;
589 width >>= 2;
590
591 while (width >= PM3_FIFO_SIZE) {
592 int i = PM3_FIFO_SIZE - 1;
593
594 PM3_WAIT(par, PM3_FIFO_SIZE);
595 while (i--) {
596 PM3_WRITE_REG(par, PM3BitMaskPattern, *src);
597 src++;
598 }
599 width -= PM3_FIFO_SIZE - 1;
600 }
601
602 PM3_WAIT(par, width + 1);
603 while (width--) {
604 PM3_WRITE_REG(par, PM3BitMaskPattern, *src);
605 src++;
606 }
607 }
608 }
609 /* end of acceleration functions */
610
611 /*
612 * Hardware Cursor support.
613 */
614 static const u8 cursor_bits_lookup[16] = {
615 0x00, 0x40, 0x10, 0x50, 0x04, 0x44, 0x14, 0x54,
616 0x01, 0x41, 0x11, 0x51, 0x05, 0x45, 0x15, 0x55
617 };
618
619 static int pm3fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
620 {
621 struct pm3_par *par = info->par;
622 u8 mode;
623
624 if (!hwcursor)
625 return -EINVAL; /* just to force soft_cursor() call */
626
627 /* Too large of a cursor or wrong bpp :-( */
628 if (cursor->image.width > 64 ||
629 cursor->image.height > 64 ||
630 cursor->image.depth > 1)
631 return -EINVAL;
632
633 mode = PM3RD_CursorMode_TYPE_X;
634 if (cursor->enable)
635 mode |= PM3RD_CursorMode_CURSOR_ENABLE;
636
637 PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, mode);
638
639 /*
640 * If the cursor is not be changed this means either we want the
641 * current cursor state (if enable is set) or we want to query what
642 * we can do with the cursor (if enable is not set)
643 */
644 if (!cursor->set)
645 return 0;
646
647 if (cursor->set & FB_CUR_SETPOS) {
648 int x = cursor->image.dx - info->var.xoffset;
649 int y = cursor->image.dy - info->var.yoffset;
650
651 PM3_WRITE_DAC_REG(par, PM3RD_CursorXLow, x & 0xff);
652 PM3_WRITE_DAC_REG(par, PM3RD_CursorXHigh, (x >> 8) & 0xf);
653 PM3_WRITE_DAC_REG(par, PM3RD_CursorYLow, y & 0xff);
654 PM3_WRITE_DAC_REG(par, PM3RD_CursorYHigh, (y >> 8) & 0xf);
655 }
656
657 if (cursor->set & FB_CUR_SETHOT) {
658 PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotX,
659 cursor->hot.x & 0x3f);
660 PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotY,
661 cursor->hot.y & 0x3f);
662 }
663
664 if (cursor->set & FB_CUR_SETCMAP) {
665 u32 fg_idx = cursor->image.fg_color;
666 u32 bg_idx = cursor->image.bg_color;
667 struct fb_cmap cmap = info->cmap;
668
669 /* the X11 driver says one should use these color registers */
670 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(39),
671 cmap.red[fg_idx] >> 8 );
672 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(40),
673 cmap.green[fg_idx] >> 8 );
674 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(41),
675 cmap.blue[fg_idx] >> 8 );
676
677 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(42),
678 cmap.red[bg_idx] >> 8 );
679 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(43),
680 cmap.green[bg_idx] >> 8 );
681 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(44),
682 cmap.blue[bg_idx] >> 8 );
683 }
684
685 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
686 u8 *bitmap = (u8 *)cursor->image.data;
687 u8 *mask = (u8 *)cursor->mask;
688 int i;
689 int pos = PM3RD_CursorPattern(0);
690
691 for (i = 0; i < cursor->image.height; i++) {
692 int j = (cursor->image.width + 7) >> 3;
693 int k = 8 - j;
694
695 for (; j > 0; j--) {
696 u8 data = *bitmap ^ *mask;
697
698 if (cursor->rop == ROP_COPY)
699 data = *mask & *bitmap;
700 /* Upper 4 bits of bitmap data */
701 PM3_WRITE_DAC_REG(par, pos++,
702 cursor_bits_lookup[data >> 4] |
703 (cursor_bits_lookup[*mask >> 4] << 1));
704 /* Lower 4 bits of bitmap */
705 PM3_WRITE_DAC_REG(par, pos++,
706 cursor_bits_lookup[data & 0xf] |
707 (cursor_bits_lookup[*mask & 0xf] << 1));
708 bitmap++;
709 mask++;
710 }
711 for (; k > 0; k--) {
712 PM3_WRITE_DAC_REG(par, pos++, 0);
713 PM3_WRITE_DAC_REG(par, pos++, 0);
714 }
715 }
716 while (pos < PM3RD_CursorPattern(1024))
717 PM3_WRITE_DAC_REG(par, pos++, 0);
718 }
719 return 0;
720 }
721
722 /* write the mode to registers */
723 static void pm3fb_write_mode(struct fb_info *info)
724 {
725 struct pm3_par *par = info->par;
726 char tempsync = 0x00;
727 char tempmisc = 0x00;
728 const u32 hsstart = info->var.right_margin;
729 const u32 hsend = hsstart + info->var.hsync_len;
730 const u32 hbend = hsend + info->var.left_margin;
731 const u32 xres = (info->var.xres + 31) & ~31;
732 const u32 htotal = xres + hbend;
733 const u32 vsstart = info->var.lower_margin;
734 const u32 vsend = vsstart + info->var.vsync_len;
735 const u32 vbend = vsend + info->var.upper_margin;
736 const u32 vtotal = info->var.yres + vbend;
737 const u32 width = (info->var.xres_virtual + 7) & ~7;
738 const unsigned bpp = info->var.bits_per_pixel;
739
740 PM3_WAIT(par, 20);
741 PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xffffffff);
742 PM3_WRITE_REG(par, PM3Aperture0, 0x00000000);
743 PM3_WRITE_REG(par, PM3Aperture1, 0x00000000);
744 PM3_WRITE_REG(par, PM3FIFODis, 0x00000007);
745
746 PM3_WRITE_REG(par, PM3HTotal,
747 pm3fb_shift_bpp(bpp, htotal - 1));
748 PM3_WRITE_REG(par, PM3HsEnd,
749 pm3fb_shift_bpp(bpp, hsend));
750 PM3_WRITE_REG(par, PM3HsStart,
751 pm3fb_shift_bpp(bpp, hsstart));
752 PM3_WRITE_REG(par, PM3HbEnd,
753 pm3fb_shift_bpp(bpp, hbend));
754 PM3_WRITE_REG(par, PM3HgEnd,
755 pm3fb_shift_bpp(bpp, hbend));
756 PM3_WRITE_REG(par, PM3ScreenStride,
757 pm3fb_shift_bpp(bpp, width));
758 PM3_WRITE_REG(par, PM3VTotal, vtotal - 1);
759 PM3_WRITE_REG(par, PM3VsEnd, vsend - 1);
760 PM3_WRITE_REG(par, PM3VsStart, vsstart - 1);
761 PM3_WRITE_REG(par, PM3VbEnd, vbend);
762
763 switch (bpp) {
764 case 8:
765 PM3_WRITE_REG(par, PM3ByAperture1Mode,
766 PM3ByApertureMode_PIXELSIZE_8BIT);
767 PM3_WRITE_REG(par, PM3ByAperture2Mode,
768 PM3ByApertureMode_PIXELSIZE_8BIT);
769 break;
770
771 case 16:
772 #ifndef __BIG_ENDIAN
773 PM3_WRITE_REG(par, PM3ByAperture1Mode,
774 PM3ByApertureMode_PIXELSIZE_16BIT);
775 PM3_WRITE_REG(par, PM3ByAperture2Mode,
776 PM3ByApertureMode_PIXELSIZE_16BIT);
777 #else
778 PM3_WRITE_REG(par, PM3ByAperture1Mode,
779 PM3ByApertureMode_PIXELSIZE_16BIT |
780 PM3ByApertureMode_BYTESWAP_BADC);
781 PM3_WRITE_REG(par, PM3ByAperture2Mode,
782 PM3ByApertureMode_PIXELSIZE_16BIT |
783 PM3ByApertureMode_BYTESWAP_BADC);
784 #endif /* ! __BIG_ENDIAN */
785 break;
786
787 case 32:
788 #ifndef __BIG_ENDIAN
789 PM3_WRITE_REG(par, PM3ByAperture1Mode,
790 PM3ByApertureMode_PIXELSIZE_32BIT);
791 PM3_WRITE_REG(par, PM3ByAperture2Mode,
792 PM3ByApertureMode_PIXELSIZE_32BIT);
793 #else
794 PM3_WRITE_REG(par, PM3ByAperture1Mode,
795 PM3ByApertureMode_PIXELSIZE_32BIT |
796 PM3ByApertureMode_BYTESWAP_DCBA);
797 PM3_WRITE_REG(par, PM3ByAperture2Mode,
798 PM3ByApertureMode_PIXELSIZE_32BIT |
799 PM3ByApertureMode_BYTESWAP_DCBA);
800 #endif /* ! __BIG_ENDIAN */
801 break;
802
803 default:
804 DPRINTK("Unsupported depth %d\n", bpp);
805 break;
806 }
807
808 /*
809 * Oxygen VX1 - it appears that setting PM3VideoControl and
810 * then PM3RD_SyncControl to the same SYNC settings undoes
811 * any net change - they seem to xor together. Only set the
812 * sync options in PM3RD_SyncControl. --rmk
813 */
814 {
815 unsigned int video = par->video;
816
817 video &= ~(PM3VideoControl_HSYNC_MASK |
818 PM3VideoControl_VSYNC_MASK);
819 video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
820 PM3VideoControl_VSYNC_ACTIVE_HIGH;
821 PM3_WRITE_REG(par, PM3VideoControl, video);
822 }
823 PM3_WRITE_REG(par, PM3VClkCtl,
824 (PM3_READ_REG(par, PM3VClkCtl) & 0xFFFFFFFC));
825 PM3_WRITE_REG(par, PM3ScreenBase, par->base);
826 PM3_WRITE_REG(par, PM3ChipConfig,
827 (PM3_READ_REG(par, PM3ChipConfig) & 0xFFFFFFFD));
828
829 wmb();
830 {
831 unsigned char uninitialized_var(m); /* ClkPreScale */
832 unsigned char uninitialized_var(n); /* ClkFeedBackScale */
833 unsigned char uninitialized_var(p); /* ClkPostScale */
834 unsigned long pixclock = PICOS2KHZ(info->var.pixclock);
835
836 (void)pm3fb_calculate_clock(pixclock, &m, &n, &p);
837
838 DPRINTK("Pixclock: %ld, Pre: %d, Feedback: %d, Post: %d\n",
839 pixclock, (int) m, (int) n, (int) p);
840
841 PM3_WRITE_DAC_REG(par, PM3RD_DClk0PreScale, m);
842 PM3_WRITE_DAC_REG(par, PM3RD_DClk0FeedbackScale, n);
843 PM3_WRITE_DAC_REG(par, PM3RD_DClk0PostScale, p);
844 }
845 /*
846 PM3_WRITE_DAC_REG(par, PM3RD_IndexControl, 0x00);
847 */
848 /*
849 PM3_SLOW_WRITE_REG(par, PM3RD_IndexControl, 0x00);
850 */
851 if ((par->video & PM3VideoControl_HSYNC_MASK) ==
852 PM3VideoControl_HSYNC_ACTIVE_HIGH)
853 tempsync |= PM3RD_SyncControl_HSYNC_ACTIVE_HIGH;
854 if ((par->video & PM3VideoControl_VSYNC_MASK) ==
855 PM3VideoControl_VSYNC_ACTIVE_HIGH)
856 tempsync |= PM3RD_SyncControl_VSYNC_ACTIVE_HIGH;
857
858 PM3_WRITE_DAC_REG(par, PM3RD_SyncControl, tempsync);
859 DPRINTK("PM3RD_SyncControl: %d\n", tempsync);
860
861 PM3_WRITE_DAC_REG(par, PM3RD_DACControl, 0x00);
862
863 switch (pm3fb_depth(&info->var)) {
864 case 8:
865 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
866 PM3RD_PixelSize_8_BIT_PIXELS);
867 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
868 PM3RD_ColorFormat_CI8_COLOR |
869 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
870 tempmisc |= PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
871 break;
872 case 12:
873 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
874 PM3RD_PixelSize_16_BIT_PIXELS);
875 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
876 PM3RD_ColorFormat_4444_COLOR |
877 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
878 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
879 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
880 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
881 break;
882 case 15:
883 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
884 PM3RD_PixelSize_16_BIT_PIXELS);
885 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
886 PM3RD_ColorFormat_5551_FRONT_COLOR |
887 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
888 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
889 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
890 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
891 break;
892 case 16:
893 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
894 PM3RD_PixelSize_16_BIT_PIXELS);
895 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
896 PM3RD_ColorFormat_565_FRONT_COLOR |
897 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
898 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
899 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
900 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
901 break;
902 case 32:
903 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
904 PM3RD_PixelSize_32_BIT_PIXELS);
905 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
906 PM3RD_ColorFormat_8888_COLOR |
907 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
908 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
909 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
910 break;
911 }
912 PM3_WRITE_DAC_REG(par, PM3RD_MiscControl, tempmisc);
913 }
914
915 /*
916 * hardware independent functions
917 */
918 static int pm3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
919 {
920 u32 lpitch;
921 unsigned bpp = var->red.length + var->green.length
922 + var->blue.length + var->transp.length;
923
924 if (bpp != var->bits_per_pixel) {
925 /* set predefined mode for bits_per_pixel settings */
926
927 switch (var->bits_per_pixel) {
928 case 8:
929 var->red.length = 8;
930 var->green.length = 8;
931 var->blue.length = 8;
932 var->red.offset = 0;
933 var->green.offset = 0;
934 var->blue.offset = 0;
935 var->transp.offset = 0;
936 var->transp.length = 0;
937 break;
938 case 16:
939 var->red.length = 5;
940 var->blue.length = 5;
941 var->green.length = 6;
942 var->transp.length = 0;
943 break;
944 case 32:
945 var->red.length = 8;
946 var->green.length = 8;
947 var->blue.length = 8;
948 var->transp.length = 8;
949 break;
950 default:
951 DPRINTK("depth not supported: %u\n",
952 var->bits_per_pixel);
953 return -EINVAL;
954 }
955 }
956 /* it is assumed BGRA order */
957 if (var->bits_per_pixel > 8 ) {
958 var->blue.offset = 0;
959 var->green.offset = var->blue.length;
960 var->red.offset = var->green.offset + var->green.length;
961 var->transp.offset = var->red.offset + var->red.length;
962 }
963 var->height = -1;
964 var->width = -1;
965
966 if (var->xres != var->xres_virtual) {
967 DPRINTK("virtual x resolution != "
968 "physical x resolution not supported\n");
969 return -EINVAL;
970 }
971
972 if (var->yres > var->yres_virtual) {
973 DPRINTK("virtual y resolution < "
974 "physical y resolution not possible\n");
975 return -EINVAL;
976 }
977
978 if (var->xoffset) {
979 DPRINTK("xoffset not supported\n");
980 return -EINVAL;
981 }
982
983 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
984 DPRINTK("interlace not supported\n");
985 return -EINVAL;
986 }
987
988 var->xres = (var->xres + 31) & ~31; /* could sometimes be 8 */
989 lpitch = var->xres * ((var->bits_per_pixel + 7) >> 3);
990
991 if (var->xres < 200 || var->xres > 2048) {
992 DPRINTK("width not supported: %u\n", var->xres);
993 return -EINVAL;
994 }
995
996 if (var->yres < 200 || var->yres > 4095) {
997 DPRINTK("height not supported: %u\n", var->yres);
998 return -EINVAL;
999 }
1000
1001 if (lpitch * var->yres_virtual > info->fix.smem_len) {
1002 DPRINTK("no memory for screen (%ux%ux%u)\n",
1003 var->xres, var->yres_virtual, var->bits_per_pixel);
1004 return -EINVAL;
1005 }
1006
1007 if (PICOS2KHZ(var->pixclock) > PM3_MAX_PIXCLOCK) {
1008 DPRINTK("pixclock too high (%ldKHz)\n",
1009 PICOS2KHZ(var->pixclock));
1010 return -EINVAL;
1011 }
1012
1013 var->accel_flags = 0; /* Can't mmap if this is on */
1014
1015 DPRINTK("Checking graphics mode at %dx%d depth %d\n",
1016 var->xres, var->yres, var->bits_per_pixel);
1017 return 0;
1018 }
1019
1020 static int pm3fb_set_par(struct fb_info *info)
1021 {
1022 struct pm3_par *par = info->par;
1023 const u32 xres = (info->var.xres + 31) & ~31;
1024 const unsigned bpp = info->var.bits_per_pixel;
1025
1026 par->base = pm3fb_shift_bpp(bpp, (info->var.yoffset * xres)
1027 + info->var.xoffset);
1028 par->video = 0;
1029
1030 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
1031 par->video |= PM3VideoControl_HSYNC_ACTIVE_HIGH;
1032 else
1033 par->video |= PM3VideoControl_HSYNC_ACTIVE_LOW;
1034
1035 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
1036 par->video |= PM3VideoControl_VSYNC_ACTIVE_HIGH;
1037 else
1038 par->video |= PM3VideoControl_VSYNC_ACTIVE_LOW;
1039
1040 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE)
1041 par->video |= PM3VideoControl_LINE_DOUBLE_ON;
1042
1043 if ((info->var.activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW)
1044 par->video |= PM3VideoControl_ENABLE;
1045 else
1046 DPRINTK("PM3Video disabled\n");
1047
1048 switch (bpp) {
1049 case 8:
1050 par->video |= PM3VideoControl_PIXELSIZE_8BIT;
1051 break;
1052 case 16:
1053 par->video |= PM3VideoControl_PIXELSIZE_16BIT;
1054 break;
1055 case 32:
1056 par->video |= PM3VideoControl_PIXELSIZE_32BIT;
1057 break;
1058 default:
1059 DPRINTK("Unsupported depth\n");
1060 break;
1061 }
1062
1063 info->fix.visual =
1064 (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
1065 info->fix.line_length = ((info->var.xres_virtual + 7) >> 3) * bpp;
1066
1067 /* pm3fb_clear_memory(info, 0);*/
1068 pm3fb_clear_colormap(par, 0, 0, 0);
1069 PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, 0);
1070 pm3fb_init_engine(info);
1071 pm3fb_write_mode(info);
1072 return 0;
1073 }
1074
1075 static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1076 unsigned blue, unsigned transp,
1077 struct fb_info *info)
1078 {
1079 struct pm3_par *par = info->par;
1080
1081 if (regno >= 256) /* no. of hw registers */
1082 return -EINVAL;
1083
1084 /* grayscale works only partially under directcolor */
1085 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
1086 if (info->var.grayscale)
1087 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
1088
1089 /* Directcolor:
1090 * var->{color}.offset contains start of bitfield
1091 * var->{color}.length contains length of bitfield
1092 * {hardwarespecific} contains width of DAC
1093 * pseudo_palette[X] is programmed to (X << red.offset) |
1094 * (X << green.offset) |
1095 * (X << blue.offset)
1096 * RAMDAC[X] is programmed to (red, green, blue)
1097 * color depth = SUM(var->{color}.length)
1098 *
1099 * Pseudocolor:
1100 * var->{color}.offset is 0
1101 * var->{color}.length contains width of DAC or the number
1102 * of unique colors available (color depth)
1103 * pseudo_palette is not used
1104 * RAMDAC[X] is programmed to (red, green, blue)
1105 * color depth = var->{color}.length
1106 */
1107
1108 /*
1109 * This is the point where the color is converted to something that
1110 * is acceptable by the hardware.
1111 */
1112 #define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
1113 red = CNVT_TOHW(red, info->var.red.length);
1114 green = CNVT_TOHW(green, info->var.green.length);
1115 blue = CNVT_TOHW(blue, info->var.blue.length);
1116 transp = CNVT_TOHW(transp, info->var.transp.length);
1117 #undef CNVT_TOHW
1118
1119 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
1120 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1121 u32 v;
1122
1123 if (regno >= 16)
1124 return -EINVAL;
1125
1126 v = (red << info->var.red.offset) |
1127 (green << info->var.green.offset) |
1128 (blue << info->var.blue.offset) |
1129 (transp << info->var.transp.offset);
1130
1131 switch (info->var.bits_per_pixel) {
1132 case 8:
1133 break;
1134 case 16:
1135 case 32:
1136 ((u32 *)(info->pseudo_palette))[regno] = v;
1137 break;
1138 }
1139 return 0;
1140 } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR)
1141 pm3fb_set_color(par, regno, red, green, blue);
1142
1143 return 0;
1144 }
1145
1146 static int pm3fb_pan_display(struct fb_var_screeninfo *var,
1147 struct fb_info *info)
1148 {
1149 struct pm3_par *par = info->par;
1150 const u32 xres = (var->xres + 31) & ~31;
1151
1152 par->base = pm3fb_shift_bpp(var->bits_per_pixel,
1153 (var->yoffset * xres)
1154 + var->xoffset);
1155 PM3_WAIT(par, 1);
1156 PM3_WRITE_REG(par, PM3ScreenBase, par->base);
1157 return 0;
1158 }
1159
1160 static int pm3fb_blank(int blank_mode, struct fb_info *info)
1161 {
1162 struct pm3_par *par = info->par;
1163 u32 video = par->video;
1164
1165 /*
1166 * Oxygen VX1 - it appears that setting PM3VideoControl and
1167 * then PM3RD_SyncControl to the same SYNC settings undoes
1168 * any net change - they seem to xor together. Only set the
1169 * sync options in PM3RD_SyncControl. --rmk
1170 */
1171 video &= ~(PM3VideoControl_HSYNC_MASK |
1172 PM3VideoControl_VSYNC_MASK);
1173 video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
1174 PM3VideoControl_VSYNC_ACTIVE_HIGH;
1175
1176 switch (blank_mode) {
1177 case FB_BLANK_UNBLANK:
1178 video |= PM3VideoControl_ENABLE;
1179 break;
1180 case FB_BLANK_NORMAL:
1181 video &= ~PM3VideoControl_ENABLE;
1182 break;
1183 case FB_BLANK_HSYNC_SUSPEND:
1184 video &= ~(PM3VideoControl_HSYNC_MASK |
1185 PM3VideoControl_BLANK_ACTIVE_LOW);
1186 break;
1187 case FB_BLANK_VSYNC_SUSPEND:
1188 video &= ~(PM3VideoControl_VSYNC_MASK |
1189 PM3VideoControl_BLANK_ACTIVE_LOW);
1190 break;
1191 case FB_BLANK_POWERDOWN:
1192 video &= ~(PM3VideoControl_HSYNC_MASK |
1193 PM3VideoControl_VSYNC_MASK |
1194 PM3VideoControl_BLANK_ACTIVE_LOW);
1195 break;
1196 default:
1197 DPRINTK("Unsupported blanking %d\n", blank_mode);
1198 return 1;
1199 }
1200
1201 PM3_WAIT(par, 1);
1202 PM3_WRITE_REG(par, PM3VideoControl, video);
1203 return 0;
1204 }
1205
1206 /*
1207 * Frame buffer operations
1208 */
1209
1210 static struct fb_ops pm3fb_ops = {
1211 .owner = THIS_MODULE,
1212 .fb_check_var = pm3fb_check_var,
1213 .fb_set_par = pm3fb_set_par,
1214 .fb_setcolreg = pm3fb_setcolreg,
1215 .fb_pan_display = pm3fb_pan_display,
1216 .fb_fillrect = pm3fb_fillrect,
1217 .fb_copyarea = pm3fb_copyarea,
1218 .fb_imageblit = pm3fb_imageblit,
1219 .fb_blank = pm3fb_blank,
1220 .fb_sync = pm3fb_sync,
1221 .fb_cursor = pm3fb_cursor,
1222 };
1223
1224 /* ------------------------------------------------------------------------- */
1225
1226 /*
1227 * Initialization
1228 */
1229
1230 /* mmio register are already mapped when this function is called */
1231 /* the pm3fb_fix.smem_start is also set */
1232 static unsigned long __devinit pm3fb_size_memory(struct pm3_par *par)
1233 {
1234 unsigned long memsize = 0;
1235 unsigned long tempBypass, i, temp1, temp2;
1236 unsigned char __iomem *screen_mem;
1237
1238 pm3fb_fix.smem_len = 64 * 1024l * 1024; /* request full aperture size */
1239 /* Linear frame buffer - request region and map it. */
1240 if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
1241 "pm3fb smem")) {
1242 printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
1243 return 0;
1244 }
1245 screen_mem =
1246 ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1247 if (!screen_mem) {
1248 printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
1249 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1250 return 0;
1251 }
1252
1253 /* TODO: card-specific stuff, *before* accessing *any* FB memory */
1254 /* For Appian Jeronimo 2000 board second head */
1255
1256 tempBypass = PM3_READ_REG(par, PM3MemBypassWriteMask);
1257
1258 DPRINTK("PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass);
1259
1260 PM3_WAIT(par, 1);
1261 PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xFFFFFFFF);
1262
1263 /* pm3 split up memory, replicates, and do a lot of
1264 * nasty stuff IMHO ;-)
1265 */
1266 for (i = 0; i < 32; i++) {
1267 fb_writel(i * 0x00345678,
1268 (screen_mem + (i * 1048576)));
1269 mb();
1270 temp1 = fb_readl((screen_mem + (i * 1048576)));
1271
1272 /* Let's check for wrapover, write will fail at 16MB boundary */
1273 if (temp1 == (i * 0x00345678))
1274 memsize = i;
1275 else
1276 break;
1277 }
1278
1279 DPRINTK("First detect pass already got %ld MB\n", memsize + 1);
1280
1281 if (memsize + 1 == i) {
1282 for (i = 0; i < 32; i++) {
1283 /* Clear first 32MB ; 0 is 0, no need to byteswap */
1284 writel(0x0000000, (screen_mem + (i * 1048576)));
1285 }
1286 wmb();
1287
1288 for (i = 32; i < 64; i++) {
1289 fb_writel(i * 0x00345678,
1290 (screen_mem + (i * 1048576)));
1291 mb();
1292 temp1 =
1293 fb_readl((screen_mem + (i * 1048576)));
1294 temp2 =
1295 fb_readl((screen_mem + ((i - 32) * 1048576)));
1296 /* different value, different RAM... */
1297 if ((temp1 == (i * 0x00345678)) && (temp2 == 0))
1298 memsize = i;
1299 else
1300 break;
1301 }
1302 }
1303 DPRINTK("Second detect pass got %ld MB\n", memsize + 1);
1304
1305 PM3_WAIT(par, 1);
1306 PM3_WRITE_REG(par, PM3MemBypassWriteMask, tempBypass);
1307
1308 iounmap(screen_mem);
1309 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1310 memsize = 1048576 * (memsize + 1);
1311
1312 DPRINTK("Returning 0x%08lx bytes\n", memsize);
1313
1314 return memsize;
1315 }
1316
1317 static int __devinit pm3fb_probe(struct pci_dev *dev,
1318 const struct pci_device_id *ent)
1319 {
1320 struct fb_info *info;
1321 struct pm3_par *par;
1322 struct device *device = &dev->dev; /* for pci drivers */
1323 int err;
1324 int retval = -ENXIO;
1325
1326 err = pci_enable_device(dev);
1327 if (err) {
1328 printk(KERN_WARNING "pm3fb: Can't enable PCI dev: %d\n", err);
1329 return err;
1330 }
1331 /*
1332 * Dynamically allocate info and par
1333 */
1334 info = framebuffer_alloc(sizeof(struct pm3_par), device);
1335
1336 if (!info)
1337 return -ENOMEM;
1338 par = info->par;
1339
1340 /*
1341 * Here we set the screen_base to the virtual memory address
1342 * for the framebuffer.
1343 */
1344 pm3fb_fix.mmio_start = pci_resource_start(dev, 0);
1345 pm3fb_fix.mmio_len = PM3_REGS_SIZE;
1346 #if defined(__BIG_ENDIAN)
1347 pm3fb_fix.mmio_start += PM3_REGS_SIZE;
1348 DPRINTK("Adjusting register base for big-endian.\n");
1349 #endif
1350
1351 /* Registers - request region and map it. */
1352 if (!request_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len,
1353 "pm3fb regbase")) {
1354 printk(KERN_WARNING "pm3fb: Can't reserve regbase.\n");
1355 goto err_exit_neither;
1356 }
1357 par->v_regs =
1358 ioremap_nocache(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
1359 if (!par->v_regs) {
1360 printk(KERN_WARNING "pm3fb: Can't remap %s register area.\n",
1361 pm3fb_fix.id);
1362 release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
1363 goto err_exit_neither;
1364 }
1365
1366 /* Linear frame buffer - request region and map it. */
1367 pm3fb_fix.smem_start = pci_resource_start(dev, 1);
1368 pm3fb_fix.smem_len = pm3fb_size_memory(par);
1369 if (!pm3fb_fix.smem_len) {
1370 printk(KERN_WARNING "pm3fb: Can't find memory on board.\n");
1371 goto err_exit_mmio;
1372 }
1373 if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
1374 "pm3fb smem")) {
1375 printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
1376 goto err_exit_mmio;
1377 }
1378 info->screen_base =
1379 ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1380 if (!info->screen_base) {
1381 printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
1382 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1383 goto err_exit_mmio;
1384 }
1385 info->screen_size = pm3fb_fix.smem_len;
1386
1387 #ifdef CONFIG_MTRR
1388 if (!nomtrr)
1389 par->mtrr_handle = mtrr_add(pm3fb_fix.smem_start,
1390 pm3fb_fix.smem_len,
1391 MTRR_TYPE_WRCOMB, 1);
1392 #endif
1393 info->fbops = &pm3fb_ops;
1394
1395 par->video = PM3_READ_REG(par, PM3VideoControl);
1396
1397 info->fix = pm3fb_fix;
1398 info->pseudo_palette = par->palette;
1399 info->flags = FBINFO_DEFAULT |
1400 FBINFO_HWACCEL_XPAN |
1401 FBINFO_HWACCEL_YPAN |
1402 FBINFO_HWACCEL_COPYAREA |
1403 FBINFO_HWACCEL_IMAGEBLIT |
1404 FBINFO_HWACCEL_FILLRECT;
1405
1406 if (noaccel) {
1407 printk(KERN_DEBUG "disabling acceleration\n");
1408 info->flags |= FBINFO_HWACCEL_DISABLED;
1409 }
1410 info->pixmap.addr = kmalloc(PM3_PIXMAP_SIZE, GFP_KERNEL);
1411 if (!info->pixmap.addr) {
1412 retval = -ENOMEM;
1413 goto err_exit_pixmap;
1414 }
1415 info->pixmap.size = PM3_PIXMAP_SIZE;
1416 info->pixmap.buf_align = 4;
1417 info->pixmap.scan_align = 4;
1418 info->pixmap.access_align = 32;
1419 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1420
1421 /*
1422 * This should give a reasonable default video mode. The following is
1423 * done when we can set a video mode.
1424 */
1425 if (!mode_option)
1426 mode_option = "640x480@60";
1427
1428 retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8);
1429
1430 if (!retval || retval == 4) {
1431 retval = -EINVAL;
1432 goto err_exit_both;
1433 }
1434
1435 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
1436 retval = -ENOMEM;
1437 goto err_exit_both;
1438 }
1439
1440 /*
1441 * For drivers that can...
1442 */
1443 pm3fb_check_var(&info->var, info);
1444
1445 if (register_framebuffer(info) < 0) {
1446 retval = -EINVAL;
1447 goto err_exit_all;
1448 }
1449 printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
1450 info->fix.id);
1451 pci_set_drvdata(dev, info);
1452 return 0;
1453
1454 err_exit_all:
1455 fb_dealloc_cmap(&info->cmap);
1456 err_exit_both:
1457 kfree(info->pixmap.addr);
1458 err_exit_pixmap:
1459 iounmap(info->screen_base);
1460 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1461 err_exit_mmio:
1462 iounmap(par->v_regs);
1463 release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
1464 err_exit_neither:
1465 framebuffer_release(info);
1466 return retval;
1467 }
1468
1469 /*
1470 * Cleanup
1471 */
1472 static void __devexit pm3fb_remove(struct pci_dev *dev)
1473 {
1474 struct fb_info *info = pci_get_drvdata(dev);
1475
1476 if (info) {
1477 struct fb_fix_screeninfo *fix = &info->fix;
1478 struct pm3_par *par = info->par;
1479
1480 unregister_framebuffer(info);
1481 fb_dealloc_cmap(&info->cmap);
1482
1483 #ifdef CONFIG_MTRR
1484 if (par->mtrr_handle >= 0)
1485 mtrr_del(par->mtrr_handle, info->fix.smem_start,
1486 info->fix.smem_len);
1487 #endif /* CONFIG_MTRR */
1488 iounmap(info->screen_base);
1489 release_mem_region(fix->smem_start, fix->smem_len);
1490 iounmap(par->v_regs);
1491 release_mem_region(fix->mmio_start, fix->mmio_len);
1492
1493 pci_set_drvdata(dev, NULL);
1494 kfree(info->pixmap.addr);
1495 framebuffer_release(info);
1496 }
1497 }
1498
1499 static struct pci_device_id pm3fb_id_table[] = {
1500 { PCI_VENDOR_ID_3DLABS, 0x0a,
1501 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1502 { 0, }
1503 };
1504
1505 /* For PCI drivers */
1506 static struct pci_driver pm3fb_driver = {
1507 .name = "pm3fb",
1508 .id_table = pm3fb_id_table,
1509 .probe = pm3fb_probe,
1510 .remove = __devexit_p(pm3fb_remove),
1511 };
1512
1513 MODULE_DEVICE_TABLE(pci, pm3fb_id_table);
1514
1515 #ifndef MODULE
1516 /*
1517 * Setup
1518 */
1519
1520 /*
1521 * Only necessary if your driver takes special options,
1522 * otherwise we fall back on the generic fb_setup().
1523 */
1524 static int __init pm3fb_setup(char *options)
1525 {
1526 char *this_opt;
1527
1528 /* Parse user speficied options (`video=pm3fb:') */
1529 if (!options || !*options)
1530 return 0;
1531
1532 while ((this_opt = strsep(&options, ",")) != NULL) {
1533 if (!*this_opt)
1534 continue;
1535 else if (!strncmp(this_opt, "noaccel", 7))
1536 noaccel = 1;
1537 else if (!strncmp(this_opt, "hwcursor=", 9))
1538 hwcursor = simple_strtoul(this_opt + 9, NULL, 0);
1539 #ifdef CONFIG_MTRR
1540 else if (!strncmp(this_opt, "nomtrr", 6))
1541 nomtrr = 1;
1542 #endif
1543 else
1544 mode_option = this_opt;
1545 }
1546 return 0;
1547 }
1548 #endif /* MODULE */
1549
1550 static int __init pm3fb_init(void)
1551 {
1552 /*
1553 * For kernel boot options (in 'video=pm3fb:<options>' format)
1554 */
1555 #ifndef MODULE
1556 char *option = NULL;
1557
1558 if (fb_get_options("pm3fb", &option))
1559 return -ENODEV;
1560 pm3fb_setup(option);
1561 #endif
1562
1563 return pci_register_driver(&pm3fb_driver);
1564 }
1565
1566 #ifdef MODULE
1567 static void __exit pm3fb_exit(void)
1568 {
1569 pci_unregister_driver(&pm3fb_driver);
1570 }
1571
1572 module_exit(pm3fb_exit);
1573 #endif
1574 module_init(pm3fb_init);
1575
1576 module_param(mode_option, charp, 0);
1577 MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
1578 module_param(noaccel, bool, 0);
1579 MODULE_PARM_DESC(noaccel, "Disable acceleration");
1580 module_param(hwcursor, int, 0644);
1581 MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
1582 "(1=enable, 0=disable, default=1)");
1583 #ifdef CONFIG_MTRR
1584 module_param(nomtrr, bool, 0);
1585 MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)");
1586 #endif
1587
1588 MODULE_DESCRIPTION("Permedia3 framebuffer device driver");
1589 MODULE_LICENSE("GPL");
Linux for Ginger Game Console