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x86: make nmi_cpu_busy() always defined
[pv_ops_mirror.git] / drivers / video / pm3fb.c
blob070659992c1841bd6fccac6f9d2abd56ec174011
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, __FUNCTION__ , ## 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 return cfb_imageblit(info, image);
544
545 if (info->var.bits_per_pixel == 8) {
546 fgx |= fgx << 8;
547 bgx |= bgx << 8;
548 }
549 if (info->var.bits_per_pixel <= 16) {
550 fgx |= fgx << 16;
551 bgx |= bgx << 16;
552 }
553
554 PM3_WAIT(par, 7);
555
556 PM3_WRITE_REG(par, PM3ForegroundColor, fgx);
557 PM3_WRITE_REG(par, PM3BackgroundColor, bgx);
558
559 /* ROP Ox3 is GXcopy */
560 PM3_WRITE_REG(par, PM3Config2D,
561 PM3Config2D_UserScissorEnable |
562 PM3Config2D_UseConstantSource |
563 PM3Config2D_ForegroundROPEnable |
564 PM3Config2D_ForegroundROP(0x3) |
565 PM3Config2D_OpaqueSpan |
566 PM3Config2D_FBWriteEnable);
567 PM3_WRITE_REG(par, PM3ScissorMinXY,
568 ((image->dy & 0x0fff) << 16) | (image->dx & 0x0fff));
569 PM3_WRITE_REG(par, PM3ScissorMaxXY,
570 (((image->dy + image->height) & 0x0fff) << 16) |
571 ((image->dx + image->width) & 0x0fff));
572 PM3_WRITE_REG(par, PM3RectanglePosition,
573 PM3RectanglePosition_XOffset(image->dx) |
574 PM3RectanglePosition_YOffset(image->dy));
575 PM3_WRITE_REG(par, PM3Render2D,
576 PM3Render2D_XPositive |
577 PM3Render2D_YPositive |
578 PM3Render2D_Operation_SyncOnBitMask |
579 PM3Render2D_SpanOperation |
580 PM3Render2D_Width(image->width) |
581 PM3Render2D_Height(image->height));
582
583
584 while (height--) {
585 int width = ((image->width + 7) >> 3)
586 + info->pixmap.scan_align - 1;
587 width >>= 2;
588
589 while (width >= PM3_FIFO_SIZE) {
590 int i = PM3_FIFO_SIZE - 1;
591
592 PM3_WAIT(par, PM3_FIFO_SIZE);
593 while (i--) {
594 PM3_WRITE_REG(par, PM3BitMaskPattern, *src);
595 src++;
596 }
597 width -= PM3_FIFO_SIZE - 1;
598 }
599
600 PM3_WAIT(par, width + 1);
601 while (width--) {
602 PM3_WRITE_REG(par, PM3BitMaskPattern, *src);
603 src++;
604 }
605 }
606 }
607 /* end of acceleration functions */
608
609 /*
610 * Hardware Cursor support.
611 */
612 static const u8 cursor_bits_lookup[16] = {
613 0x00, 0x40, 0x10, 0x50, 0x04, 0x44, 0x14, 0x54,
614 0x01, 0x41, 0x11, 0x51, 0x05, 0x45, 0x15, 0x55
615 };
616
617 static int pm3fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
618 {
619 struct pm3_par *par = info->par;
620 u8 mode;
621
622 if (!hwcursor)
623 return -EINVAL; /* just to force soft_cursor() call */
624
625 /* Too large of a cursor or wrong bpp :-( */
626 if (cursor->image.width > 64 ||
627 cursor->image.height > 64 ||
628 cursor->image.depth > 1)
629 return -EINVAL;
630
631 mode = PM3RD_CursorMode_TYPE_X;
632 if (cursor->enable)
633 mode |= PM3RD_CursorMode_CURSOR_ENABLE;
634
635 PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, mode);
636
637 /*
638 * If the cursor is not be changed this means either we want the
639 * current cursor state (if enable is set) or we want to query what
640 * we can do with the cursor (if enable is not set)
641 */
642 if (!cursor->set)
643 return 0;
644
645 if (cursor->set & FB_CUR_SETPOS) {
646 int x = cursor->image.dx - info->var.xoffset;
647 int y = cursor->image.dy - info->var.yoffset;
648
649 PM3_WRITE_DAC_REG(par, PM3RD_CursorXLow, x & 0xff);
650 PM3_WRITE_DAC_REG(par, PM3RD_CursorXHigh, (x >> 8) & 0xf);
651 PM3_WRITE_DAC_REG(par, PM3RD_CursorYLow, y & 0xff);
652 PM3_WRITE_DAC_REG(par, PM3RD_CursorYHigh, (y >> 8) & 0xf);
653 }
654
655 if (cursor->set & FB_CUR_SETHOT) {
656 PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotX,
657 cursor->hot.x & 0x3f);
658 PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotY,
659 cursor->hot.y & 0x3f);
660 }
661
662 if (cursor->set & FB_CUR_SETCMAP) {
663 u32 fg_idx = cursor->image.fg_color;
664 u32 bg_idx = cursor->image.bg_color;
665 struct fb_cmap cmap = info->cmap;
666
667 /* the X11 driver says one should use these color registers */
668 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(39),
669 cmap.red[fg_idx] >> 8 );
670 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(40),
671 cmap.green[fg_idx] >> 8 );
672 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(41),
673 cmap.blue[fg_idx] >> 8 );
674
675 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(42),
676 cmap.red[bg_idx] >> 8 );
677 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(43),
678 cmap.green[bg_idx] >> 8 );
679 PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(44),
680 cmap.blue[bg_idx] >> 8 );
681 }
682
683 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
684 u8 *bitmap = (u8 *)cursor->image.data;
685 u8 *mask = (u8 *)cursor->mask;
686 int i;
687 int pos = PM3RD_CursorPattern(0);
688
689 for (i = 0; i < cursor->image.height; i++) {
690 int j = (cursor->image.width + 7) >> 3;
691 int k = 8 - j;
692
693 for (; j > 0; j--) {
694 u8 data = *bitmap ^ *mask;
695
696 if (cursor->rop == ROP_COPY)
697 data = *mask & *bitmap;
698 /* Upper 4 bits of bitmap data */
699 PM3_WRITE_DAC_REG(par, pos++,
700 cursor_bits_lookup[data >> 4] |
701 (cursor_bits_lookup[*mask >> 4] << 1));
702 /* Lower 4 bits of bitmap */
703 PM3_WRITE_DAC_REG(par, pos++,
704 cursor_bits_lookup[data & 0xf] |
705 (cursor_bits_lookup[*mask & 0xf] << 1));
706 bitmap++;
707 mask++;
708 }
709 for (; k > 0; k--) {
710 PM3_WRITE_DAC_REG(par, pos++, 0);
711 PM3_WRITE_DAC_REG(par, pos++, 0);
712 }
713 }
714 while (pos < PM3RD_CursorPattern(1024))
715 PM3_WRITE_DAC_REG(par, pos++, 0);
716 }
717 return 0;
718 }
719
720 /* write the mode to registers */
721 static void pm3fb_write_mode(struct fb_info *info)
722 {
723 struct pm3_par *par = info->par;
724 char tempsync = 0x00;
725 char tempmisc = 0x00;
726 const u32 hsstart = info->var.right_margin;
727 const u32 hsend = hsstart + info->var.hsync_len;
728 const u32 hbend = hsend + info->var.left_margin;
729 const u32 xres = (info->var.xres + 31) & ~31;
730 const u32 htotal = xres + hbend;
731 const u32 vsstart = info->var.lower_margin;
732 const u32 vsend = vsstart + info->var.vsync_len;
733 const u32 vbend = vsend + info->var.upper_margin;
734 const u32 vtotal = info->var.yres + vbend;
735 const u32 width = (info->var.xres_virtual + 7) & ~7;
736 const unsigned bpp = info->var.bits_per_pixel;
737
738 PM3_WAIT(par, 20);
739 PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xffffffff);
740 PM3_WRITE_REG(par, PM3Aperture0, 0x00000000);
741 PM3_WRITE_REG(par, PM3Aperture1, 0x00000000);
742 PM3_WRITE_REG(par, PM3FIFODis, 0x00000007);
743
744 PM3_WRITE_REG(par, PM3HTotal,
745 pm3fb_shift_bpp(bpp, htotal - 1));
746 PM3_WRITE_REG(par, PM3HsEnd,
747 pm3fb_shift_bpp(bpp, hsend));
748 PM3_WRITE_REG(par, PM3HsStart,
749 pm3fb_shift_bpp(bpp, hsstart));
750 PM3_WRITE_REG(par, PM3HbEnd,
751 pm3fb_shift_bpp(bpp, hbend));
752 PM3_WRITE_REG(par, PM3HgEnd,
753 pm3fb_shift_bpp(bpp, hbend));
754 PM3_WRITE_REG(par, PM3ScreenStride,
755 pm3fb_shift_bpp(bpp, width));
756 PM3_WRITE_REG(par, PM3VTotal, vtotal - 1);
757 PM3_WRITE_REG(par, PM3VsEnd, vsend - 1);
758 PM3_WRITE_REG(par, PM3VsStart, vsstart - 1);
759 PM3_WRITE_REG(par, PM3VbEnd, vbend);
760
761 switch (bpp) {
762 case 8:
763 PM3_WRITE_REG(par, PM3ByAperture1Mode,
764 PM3ByApertureMode_PIXELSIZE_8BIT);
765 PM3_WRITE_REG(par, PM3ByAperture2Mode,
766 PM3ByApertureMode_PIXELSIZE_8BIT);
767 break;
768
769 case 16:
770 #ifndef __BIG_ENDIAN
771 PM3_WRITE_REG(par, PM3ByAperture1Mode,
772 PM3ByApertureMode_PIXELSIZE_16BIT);
773 PM3_WRITE_REG(par, PM3ByAperture2Mode,
774 PM3ByApertureMode_PIXELSIZE_16BIT);
775 #else
776 PM3_WRITE_REG(par, PM3ByAperture1Mode,
777 PM3ByApertureMode_PIXELSIZE_16BIT |
778 PM3ByApertureMode_BYTESWAP_BADC);
779 PM3_WRITE_REG(par, PM3ByAperture2Mode,
780 PM3ByApertureMode_PIXELSIZE_16BIT |
781 PM3ByApertureMode_BYTESWAP_BADC);
782 #endif /* ! __BIG_ENDIAN */
783 break;
784
785 case 32:
786 #ifndef __BIG_ENDIAN
787 PM3_WRITE_REG(par, PM3ByAperture1Mode,
788 PM3ByApertureMode_PIXELSIZE_32BIT);
789 PM3_WRITE_REG(par, PM3ByAperture2Mode,
790 PM3ByApertureMode_PIXELSIZE_32BIT);
791 #else
792 PM3_WRITE_REG(par, PM3ByAperture1Mode,
793 PM3ByApertureMode_PIXELSIZE_32BIT |
794 PM3ByApertureMode_BYTESWAP_DCBA);
795 PM3_WRITE_REG(par, PM3ByAperture2Mode,
796 PM3ByApertureMode_PIXELSIZE_32BIT |
797 PM3ByApertureMode_BYTESWAP_DCBA);
798 #endif /* ! __BIG_ENDIAN */
799 break;
800
801 default:
802 DPRINTK("Unsupported depth %d\n", bpp);
803 break;
804 }
805
806 /*
807 * Oxygen VX1 - it appears that setting PM3VideoControl and
808 * then PM3RD_SyncControl to the same SYNC settings undoes
809 * any net change - they seem to xor together. Only set the
810 * sync options in PM3RD_SyncControl. --rmk
811 */
812 {
813 unsigned int video = par->video;
814
815 video &= ~(PM3VideoControl_HSYNC_MASK |
816 PM3VideoControl_VSYNC_MASK);
817 video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
818 PM3VideoControl_VSYNC_ACTIVE_HIGH;
819 PM3_WRITE_REG(par, PM3VideoControl, video);
820 }
821 PM3_WRITE_REG(par, PM3VClkCtl,
822 (PM3_READ_REG(par, PM3VClkCtl) & 0xFFFFFFFC));
823 PM3_WRITE_REG(par, PM3ScreenBase, par->base);
824 PM3_WRITE_REG(par, PM3ChipConfig,
825 (PM3_READ_REG(par, PM3ChipConfig) & 0xFFFFFFFD));
826
827 wmb();
828 {
829 unsigned char uninitialized_var(m); /* ClkPreScale */
830 unsigned char uninitialized_var(n); /* ClkFeedBackScale */
831 unsigned char uninitialized_var(p); /* ClkPostScale */
832 unsigned long pixclock = PICOS2KHZ(info->var.pixclock);
833
834 (void)pm3fb_calculate_clock(pixclock, &m, &n, &p);
835
836 DPRINTK("Pixclock: %ld, Pre: %d, Feedback: %d, Post: %d\n",
837 pixclock, (int) m, (int) n, (int) p);
838
839 PM3_WRITE_DAC_REG(par, PM3RD_DClk0PreScale, m);
840 PM3_WRITE_DAC_REG(par, PM3RD_DClk0FeedbackScale, n);
841 PM3_WRITE_DAC_REG(par, PM3RD_DClk0PostScale, p);
842 }
843 /*
844 PM3_WRITE_DAC_REG(par, PM3RD_IndexControl, 0x00);
845 */
846 /*
847 PM3_SLOW_WRITE_REG(par, PM3RD_IndexControl, 0x00);
848 */
849 if ((par->video & PM3VideoControl_HSYNC_MASK) ==
850 PM3VideoControl_HSYNC_ACTIVE_HIGH)
851 tempsync |= PM3RD_SyncControl_HSYNC_ACTIVE_HIGH;
852 if ((par->video & PM3VideoControl_VSYNC_MASK) ==
853 PM3VideoControl_VSYNC_ACTIVE_HIGH)
854 tempsync |= PM3RD_SyncControl_VSYNC_ACTIVE_HIGH;
855
856 PM3_WRITE_DAC_REG(par, PM3RD_SyncControl, tempsync);
857 DPRINTK("PM3RD_SyncControl: %d\n", tempsync);
858
859 PM3_WRITE_DAC_REG(par, PM3RD_DACControl, 0x00);
860
861 switch (pm3fb_depth(&info->var)) {
862 case 8:
863 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
864 PM3RD_PixelSize_8_BIT_PIXELS);
865 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
866 PM3RD_ColorFormat_CI8_COLOR |
867 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
868 tempmisc |= PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
869 break;
870 case 12:
871 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
872 PM3RD_PixelSize_16_BIT_PIXELS);
873 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
874 PM3RD_ColorFormat_4444_COLOR |
875 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
876 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
877 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
878 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
879 break;
880 case 15:
881 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
882 PM3RD_PixelSize_16_BIT_PIXELS);
883 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
884 PM3RD_ColorFormat_5551_FRONT_COLOR |
885 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
886 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
887 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
888 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
889 break;
890 case 16:
891 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
892 PM3RD_PixelSize_16_BIT_PIXELS);
893 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
894 PM3RD_ColorFormat_565_FRONT_COLOR |
895 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
896 PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
897 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
898 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
899 break;
900 case 32:
901 PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
902 PM3RD_PixelSize_32_BIT_PIXELS);
903 PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
904 PM3RD_ColorFormat_8888_COLOR |
905 PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
906 tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
907 PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
908 break;
909 }
910 PM3_WRITE_DAC_REG(par, PM3RD_MiscControl, tempmisc);
911 }
912
913 /*
914 * hardware independent functions
915 */
916 static int pm3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
917 {
918 u32 lpitch;
919 unsigned bpp = var->red.length + var->green.length
920 + var->blue.length + var->transp.length;
921
922 if (bpp != var->bits_per_pixel) {
923 /* set predefined mode for bits_per_pixel settings */
924
925 switch (var->bits_per_pixel) {
926 case 8:
927 var->red.length = 8;
928 var->green.length = 8;
929 var->blue.length = 8;
930 var->red.offset = 0;
931 var->green.offset = 0;
932 var->blue.offset = 0;
933 var->transp.offset = 0;
934 var->transp.length = 0;
935 break;
936 case 16:
937 var->red.length = 5;
938 var->blue.length = 5;
939 var->green.length = 6;
940 var->transp.length = 0;
941 break;
942 case 32:
943 var->red.length = 8;
944 var->green.length = 8;
945 var->blue.length = 8;
946 var->transp.length = 8;
947 break;
948 default:
949 DPRINTK("depth not supported: %u\n",
950 var->bits_per_pixel);
951 return -EINVAL;
952 }
953 }
954 /* it is assumed BGRA order */
955 if (var->bits_per_pixel > 8 ) {
956 var->blue.offset = 0;
957 var->green.offset = var->blue.length;
958 var->red.offset = var->green.offset + var->green.length;
959 var->transp.offset = var->red.offset + var->red.length;
960 }
961 var->height = -1;
962 var->width = -1;
963
964 if (var->xres != var->xres_virtual) {
965 DPRINTK("virtual x resolution != "
966 "physical x resolution not supported\n");
967 return -EINVAL;
968 }
969
970 if (var->yres > var->yres_virtual) {
971 DPRINTK("virtual y resolution < "
972 "physical y resolution not possible\n");
973 return -EINVAL;
974 }
975
976 if (var->xoffset) {
977 DPRINTK("xoffset not supported\n");
978 return -EINVAL;
979 }
980
981 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
982 DPRINTK("interlace not supported\n");
983 return -EINVAL;
984 }
985
986 var->xres = (var->xres + 31) & ~31; /* could sometimes be 8 */
987 lpitch = var->xres * ((var->bits_per_pixel + 7) >> 3);
988
989 if (var->xres < 200 || var->xres > 2048) {
990 DPRINTK("width not supported: %u\n", var->xres);
991 return -EINVAL;
992 }
993
994 if (var->yres < 200 || var->yres > 4095) {
995 DPRINTK("height not supported: %u\n", var->yres);
996 return -EINVAL;
997 }
998
999 if (lpitch * var->yres_virtual > info->fix.smem_len) {
1000 DPRINTK("no memory for screen (%ux%ux%u)\n",
1001 var->xres, var->yres_virtual, var->bits_per_pixel);
1002 return -EINVAL;
1003 }
1004
1005 if (PICOS2KHZ(var->pixclock) > PM3_MAX_PIXCLOCK) {
1006 DPRINTK("pixclock too high (%ldKHz)\n",
1007 PICOS2KHZ(var->pixclock));
1008 return -EINVAL;
1009 }
1010
1011 var->accel_flags = 0; /* Can't mmap if this is on */
1012
1013 DPRINTK("Checking graphics mode at %dx%d depth %d\n",
1014 var->xres, var->yres, var->bits_per_pixel);
1015 return 0;
1016 }
1017
1018 static int pm3fb_set_par(struct fb_info *info)
1019 {
1020 struct pm3_par *par = info->par;
1021 const u32 xres = (info->var.xres + 31) & ~31;
1022 const unsigned bpp = info->var.bits_per_pixel;
1023
1024 par->base = pm3fb_shift_bpp(bpp, (info->var.yoffset * xres)
1025 + info->var.xoffset);
1026 par->video = 0;
1027
1028 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
1029 par->video |= PM3VideoControl_HSYNC_ACTIVE_HIGH;
1030 else
1031 par->video |= PM3VideoControl_HSYNC_ACTIVE_LOW;
1032
1033 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
1034 par->video |= PM3VideoControl_VSYNC_ACTIVE_HIGH;
1035 else
1036 par->video |= PM3VideoControl_VSYNC_ACTIVE_LOW;
1037
1038 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE)
1039 par->video |= PM3VideoControl_LINE_DOUBLE_ON;
1040
1041 if ((info->var.activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW)
1042 par->video |= PM3VideoControl_ENABLE;
1043 else
1044 DPRINTK("PM3Video disabled\n");
1045
1046 switch (bpp) {
1047 case 8:
1048 par->video |= PM3VideoControl_PIXELSIZE_8BIT;
1049 break;
1050 case 16:
1051 par->video |= PM3VideoControl_PIXELSIZE_16BIT;
1052 break;
1053 case 32:
1054 par->video |= PM3VideoControl_PIXELSIZE_32BIT;
1055 break;
1056 default:
1057 DPRINTK("Unsupported depth\n");
1058 break;
1059 }
1060
1061 info->fix.visual =
1062 (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
1063 info->fix.line_length = ((info->var.xres_virtual + 7) >> 3) * bpp;
1064
1065 /* pm3fb_clear_memory(info, 0);*/
1066 pm3fb_clear_colormap(par, 0, 0, 0);
1067 PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, 0);
1068 pm3fb_init_engine(info);
1069 pm3fb_write_mode(info);
1070 return 0;
1071 }
1072
1073 static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1074 unsigned blue, unsigned transp,
1075 struct fb_info *info)
1076 {
1077 struct pm3_par *par = info->par;
1078
1079 if (regno >= 256) /* no. of hw registers */
1080 return -EINVAL;
1081
1082 /* grayscale works only partially under directcolor */
1083 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
1084 if (info->var.grayscale)
1085 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
1086
1087 /* Directcolor:
1088 * var->{color}.offset contains start of bitfield
1089 * var->{color}.length contains length of bitfield
1090 * {hardwarespecific} contains width of DAC
1091 * pseudo_palette[X] is programmed to (X << red.offset) |
1092 * (X << green.offset) |
1093 * (X << blue.offset)
1094 * RAMDAC[X] is programmed to (red, green, blue)
1095 * color depth = SUM(var->{color}.length)
1096 *
1097 * Pseudocolor:
1098 * var->{color}.offset is 0
1099 * var->{color}.length contains width of DAC or the number
1100 * of unique colors available (color depth)
1101 * pseudo_palette is not used
1102 * RAMDAC[X] is programmed to (red, green, blue)
1103 * color depth = var->{color}.length
1104 */
1105
1106 /*
1107 * This is the point where the color is converted to something that
1108 * is acceptable by the hardware.
1109 */
1110 #define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
1111 red = CNVT_TOHW(red, info->var.red.length);
1112 green = CNVT_TOHW(green, info->var.green.length);
1113 blue = CNVT_TOHW(blue, info->var.blue.length);
1114 transp = CNVT_TOHW(transp, info->var.transp.length);
1115 #undef CNVT_TOHW
1116
1117 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
1118 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1119 u32 v;
1120
1121 if (regno >= 16)
1122 return -EINVAL;
1123
1124 v = (red << info->var.red.offset) |
1125 (green << info->var.green.offset) |
1126 (blue << info->var.blue.offset) |
1127 (transp << info->var.transp.offset);
1128
1129 switch (info->var.bits_per_pixel) {
1130 case 8:
1131 break;
1132 case 16:
1133 case 32:
1134 ((u32 *)(info->pseudo_palette))[regno] = v;
1135 break;
1136 }
1137 return 0;
1138 } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR)
1139 pm3fb_set_color(par, regno, red, green, blue);
1140
1141 return 0;
1142 }
1143
1144 static int pm3fb_pan_display(struct fb_var_screeninfo *var,
1145 struct fb_info *info)
1146 {
1147 struct pm3_par *par = info->par;
1148 const u32 xres = (var->xres + 31) & ~31;
1149
1150 par->base = pm3fb_shift_bpp(var->bits_per_pixel,
1151 (var->yoffset * xres)
1152 + var->xoffset);
1153 PM3_WAIT(par, 1);
1154 PM3_WRITE_REG(par, PM3ScreenBase, par->base);
1155 return 0;
1156 }
1157
1158 static int pm3fb_blank(int blank_mode, struct fb_info *info)
1159 {
1160 struct pm3_par *par = info->par;
1161 u32 video = par->video;
1162
1163 /*
1164 * Oxygen VX1 - it appears that setting PM3VideoControl and
1165 * then PM3RD_SyncControl to the same SYNC settings undoes
1166 * any net change - they seem to xor together. Only set the
1167 * sync options in PM3RD_SyncControl. --rmk
1168 */
1169 video &= ~(PM3VideoControl_HSYNC_MASK |
1170 PM3VideoControl_VSYNC_MASK);
1171 video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
1172 PM3VideoControl_VSYNC_ACTIVE_HIGH;
1173
1174 switch (blank_mode) {
1175 case FB_BLANK_UNBLANK:
1176 video |= PM3VideoControl_ENABLE;
1177 break;
1178 case FB_BLANK_NORMAL:
1179 video &= ~PM3VideoControl_ENABLE;
1180 break;
1181 case FB_BLANK_HSYNC_SUSPEND:
1182 video &= ~(PM3VideoControl_HSYNC_MASK |
1183 PM3VideoControl_BLANK_ACTIVE_LOW);
1184 break;
1185 case FB_BLANK_VSYNC_SUSPEND:
1186 video &= ~(PM3VideoControl_VSYNC_MASK |
1187 PM3VideoControl_BLANK_ACTIVE_LOW);
1188 break;
1189 case FB_BLANK_POWERDOWN:
1190 video &= ~(PM3VideoControl_HSYNC_MASK |
1191 PM3VideoControl_VSYNC_MASK |
1192 PM3VideoControl_BLANK_ACTIVE_LOW);
1193 break;
1194 default:
1195 DPRINTK("Unsupported blanking %d\n", blank_mode);
1196 return 1;
1197 }
1198
1199 PM3_WAIT(par, 1);
1200 PM3_WRITE_REG(par, PM3VideoControl, video);
1201 return 0;
1202 }
1203
1204 /*
1205 * Frame buffer operations
1206 */
1207
1208 static struct fb_ops pm3fb_ops = {
1209 .owner = THIS_MODULE,
1210 .fb_check_var = pm3fb_check_var,
1211 .fb_set_par = pm3fb_set_par,
1212 .fb_setcolreg = pm3fb_setcolreg,
1213 .fb_pan_display = pm3fb_pan_display,
1214 .fb_fillrect = pm3fb_fillrect,
1215 .fb_copyarea = pm3fb_copyarea,
1216 .fb_imageblit = pm3fb_imageblit,
1217 .fb_blank = pm3fb_blank,
1218 .fb_sync = pm3fb_sync,
1219 .fb_cursor = pm3fb_cursor,
1220 };
1221
1222 /* ------------------------------------------------------------------------- */
1223
1224 /*
1225 * Initialization
1226 */
1227
1228 /* mmio register are already mapped when this function is called */
1229 /* the pm3fb_fix.smem_start is also set */
1230 static unsigned long pm3fb_size_memory(struct pm3_par *par)
1231 {
1232 unsigned long memsize = 0;
1233 unsigned long tempBypass, i, temp1, temp2;
1234 unsigned char __iomem *screen_mem;
1235
1236 pm3fb_fix.smem_len = 64 * 1024l * 1024; /* request full aperture size */
1237 /* Linear frame buffer - request region and map it. */
1238 if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
1239 "pm3fb smem")) {
1240 printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
1241 return 0;
1242 }
1243 screen_mem =
1244 ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1245 if (!screen_mem) {
1246 printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
1247 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1248 return 0;
1249 }
1250
1251 /* TODO: card-specific stuff, *before* accessing *any* FB memory */
1252 /* For Appian Jeronimo 2000 board second head */
1253
1254 tempBypass = PM3_READ_REG(par, PM3MemBypassWriteMask);
1255
1256 DPRINTK("PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass);
1257
1258 PM3_WAIT(par, 1);
1259 PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xFFFFFFFF);
1260
1261 /* pm3 split up memory, replicates, and do a lot of
1262 * nasty stuff IMHO ;-)
1263 */
1264 for (i = 0; i < 32; i++) {
1265 fb_writel(i * 0x00345678,
1266 (screen_mem + (i * 1048576)));
1267 mb();
1268 temp1 = fb_readl((screen_mem + (i * 1048576)));
1269
1270 /* Let's check for wrapover, write will fail at 16MB boundary */
1271 if (temp1 == (i * 0x00345678))
1272 memsize = i;
1273 else
1274 break;
1275 }
1276
1277 DPRINTK("First detect pass already got %ld MB\n", memsize + 1);
1278
1279 if (memsize + 1 == i) {
1280 for (i = 0; i < 32; i++) {
1281 /* Clear first 32MB ; 0 is 0, no need to byteswap */
1282 writel(0x0000000, (screen_mem + (i * 1048576)));
1283 }
1284 wmb();
1285
1286 for (i = 32; i < 64; i++) {
1287 fb_writel(i * 0x00345678,
1288 (screen_mem + (i * 1048576)));
1289 mb();
1290 temp1 =
1291 fb_readl((screen_mem + (i * 1048576)));
1292 temp2 =
1293 fb_readl((screen_mem + ((i - 32) * 1048576)));
1294 /* different value, different RAM... */
1295 if ((temp1 == (i * 0x00345678)) && (temp2 == 0))
1296 memsize = i;
1297 else
1298 break;
1299 }
1300 }
1301 DPRINTK("Second detect pass got %ld MB\n", memsize + 1);
1302
1303 PM3_WAIT(par, 1);
1304 PM3_WRITE_REG(par, PM3MemBypassWriteMask, tempBypass);
1305
1306 iounmap(screen_mem);
1307 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1308 memsize = 1048576 * (memsize + 1);
1309
1310 DPRINTK("Returning 0x%08lx bytes\n", memsize);
1311
1312 return memsize;
1313 }
1314
1315 static int __devinit pm3fb_probe(struct pci_dev *dev,
1316 const struct pci_device_id *ent)
1317 {
1318 struct fb_info *info;
1319 struct pm3_par *par;
1320 struct device *device = &dev->dev; /* for pci drivers */
1321 int err;
1322 int retval = -ENXIO;
1323
1324 err = pci_enable_device(dev);
1325 if (err) {
1326 printk(KERN_WARNING "pm3fb: Can't enable PCI dev: %d\n", err);
1327 return err;
1328 }
1329 /*
1330 * Dynamically allocate info and par
1331 */
1332 info = framebuffer_alloc(sizeof(struct pm3_par), device);
1333
1334 if (!info)
1335 return -ENOMEM;
1336 par = info->par;
1337
1338 /*
1339 * Here we set the screen_base to the virtual memory address
1340 * for the framebuffer.
1341 */
1342 pm3fb_fix.mmio_start = pci_resource_start(dev, 0);
1343 pm3fb_fix.mmio_len = PM3_REGS_SIZE;
1344 #if defined(__BIG_ENDIAN)
1345 pm3fb_fix.mmio_start += PM3_REGS_SIZE;
1346 DPRINTK("Adjusting register base for big-endian.\n");
1347 #endif
1348
1349 /* Registers - request region and map it. */
1350 if (!request_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len,
1351 "pm3fb regbase")) {
1352 printk(KERN_WARNING "pm3fb: Can't reserve regbase.\n");
1353 goto err_exit_neither;
1354 }
1355 par->v_regs =
1356 ioremap_nocache(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
1357 if (!par->v_regs) {
1358 printk(KERN_WARNING "pm3fb: Can't remap %s register area.\n",
1359 pm3fb_fix.id);
1360 release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
1361 goto err_exit_neither;
1362 }
1363
1364 /* Linear frame buffer - request region and map it. */
1365 pm3fb_fix.smem_start = pci_resource_start(dev, 1);
1366 pm3fb_fix.smem_len = pm3fb_size_memory(par);
1367 if (!pm3fb_fix.smem_len) {
1368 printk(KERN_WARNING "pm3fb: Can't find memory on board.\n");
1369 goto err_exit_mmio;
1370 }
1371 if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
1372 "pm3fb smem")) {
1373 printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
1374 goto err_exit_mmio;
1375 }
1376 info->screen_base =
1377 ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1378 if (!info->screen_base) {
1379 printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
1380 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1381 goto err_exit_mmio;
1382 }
1383 info->screen_size = pm3fb_fix.smem_len;
1384
1385 #ifdef CONFIG_MTRR
1386 if (!nomtrr)
1387 par->mtrr_handle = mtrr_add(pm3fb_fix.smem_start,
1388 pm3fb_fix.smem_len,
1389 MTRR_TYPE_WRCOMB, 1);
1390 #endif
1391 info->fbops = &pm3fb_ops;
1392
1393 par->video = PM3_READ_REG(par, PM3VideoControl);
1394
1395 info->fix = pm3fb_fix;
1396 info->pseudo_palette = par->palette;
1397 info->flags = FBINFO_DEFAULT |
1398 FBINFO_HWACCEL_XPAN |
1399 FBINFO_HWACCEL_YPAN |
1400 FBINFO_HWACCEL_COPYAREA |
1401 FBINFO_HWACCEL_IMAGEBLIT |
1402 FBINFO_HWACCEL_FILLRECT;
1403
1404 if (noaccel) {
1405 printk(KERN_DEBUG "disabling acceleration\n");
1406 info->flags |= FBINFO_HWACCEL_DISABLED;
1407 }
1408 info->pixmap.addr = kmalloc(PM3_PIXMAP_SIZE, GFP_KERNEL);
1409 if (!info->pixmap.addr) {
1410 retval = -ENOMEM;
1411 goto err_exit_pixmap;
1412 }
1413 info->pixmap.size = PM3_PIXMAP_SIZE;
1414 info->pixmap.buf_align = 4;
1415 info->pixmap.scan_align = 4;
1416 info->pixmap.access_align = 32;
1417 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1418
1419 /*
1420 * This should give a reasonable default video mode. The following is
1421 * done when we can set a video mode.
1422 */
1423 if (!mode_option)
1424 mode_option = "640x480@60";
1425
1426 retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8);
1427
1428 if (!retval || retval == 4) {
1429 retval = -EINVAL;
1430 goto err_exit_both;
1431 }
1432
1433 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
1434 retval = -ENOMEM;
1435 goto err_exit_both;
1436 }
1437
1438 /*
1439 * For drivers that can...
1440 */
1441 pm3fb_check_var(&info->var, info);
1442
1443 if (register_framebuffer(info) < 0) {
1444 retval = -EINVAL;
1445 goto err_exit_all;
1446 }
1447 printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
1448 info->fix.id);
1449 pci_set_drvdata(dev, info);
1450 return 0;
1451
1452 err_exit_all:
1453 fb_dealloc_cmap(&info->cmap);
1454 err_exit_both:
1455 kfree(info->pixmap.addr);
1456 err_exit_pixmap:
1457 iounmap(info->screen_base);
1458 release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
1459 err_exit_mmio:
1460 iounmap(par->v_regs);
1461 release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
1462 err_exit_neither:
1463 framebuffer_release(info);
1464 return retval;
1465 }
1466
1467 /*
1468 * Cleanup
1469 */
1470 static void __devexit pm3fb_remove(struct pci_dev *dev)
1471 {
1472 struct fb_info *info = pci_get_drvdata(dev);
1473
1474 if (info) {
1475 struct fb_fix_screeninfo *fix = &info->fix;
1476 struct pm3_par *par = info->par;
1477
1478 unregister_framebuffer(info);
1479 fb_dealloc_cmap(&info->cmap);
1480
1481 #ifdef CONFIG_MTRR
1482 if (par->mtrr_handle >= 0)
1483 mtrr_del(par->mtrr_handle, info->fix.smem_start,
1484 info->fix.smem_len);
1485 #endif /* CONFIG_MTRR */
1486 iounmap(info->screen_base);
1487 release_mem_region(fix->smem_start, fix->smem_len);
1488 iounmap(par->v_regs);
1489 release_mem_region(fix->mmio_start, fix->mmio_len);
1490
1491 pci_set_drvdata(dev, NULL);
1492 kfree(info->pixmap.addr);
1493 framebuffer_release(info);
1494 }
1495 }
1496
1497 static struct pci_device_id pm3fb_id_table[] = {
1498 { PCI_VENDOR_ID_3DLABS, 0x0a,
1499 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1500 { 0, }
1501 };
1502
1503 /* For PCI drivers */
1504 static struct pci_driver pm3fb_driver = {
1505 .name = "pm3fb",
1506 .id_table = pm3fb_id_table,
1507 .probe = pm3fb_probe,
1508 .remove = __devexit_p(pm3fb_remove),
1509 };
1510
1511 MODULE_DEVICE_TABLE(pci, pm3fb_id_table);
1512
1513 #ifndef MODULE
1514 /*
1515 * Setup
1516 */
1517
1518 /*
1519 * Only necessary if your driver takes special options,
1520 * otherwise we fall back on the generic fb_setup().
1521 */
1522 static int __init pm3fb_setup(char *options)
1523 {
1524 char *this_opt;
1525
1526 /* Parse user speficied options (`video=pm3fb:') */
1527 if (!options || !*options)
1528 return 0;
1529
1530 while ((this_opt = strsep(&options, ",")) != NULL) {
1531 if (!*this_opt)
1532 continue;
1533 else if (!strncmp(this_opt, "noaccel", 7))
1534 noaccel = 1;
1535 else if (!strncmp(this_opt, "hwcursor=", 9))
1536 hwcursor = simple_strtoul(this_opt + 9, NULL, 0);
1537 #ifdef CONFIG_MTRR
1538 else if (!strncmp(this_opt, "nomtrr", 6))
1539 nomtrr = 1;
1540 #endif
1541 else
1542 mode_option = this_opt;
1543 }
1544 return 0;
1545 }
1546 #endif /* MODULE */
1547
1548 static int __init pm3fb_init(void)
1549 {
1550 /*
1551 * For kernel boot options (in 'video=pm3fb:<options>' format)
1552 */
1553 #ifndef MODULE
1554 char *option = NULL;
1555
1556 if (fb_get_options("pm3fb", &option))
1557 return -ENODEV;
1558 pm3fb_setup(option);
1559 #endif
1560
1561 return pci_register_driver(&pm3fb_driver);
1562 }
1563
1564 #ifdef MODULE
1565 static void __exit pm3fb_exit(void)
1566 {
1567 pci_unregister_driver(&pm3fb_driver);
1568 }
1569
1570 module_exit(pm3fb_exit);
1571 #endif
1572 module_init(pm3fb_init);
1573
1574 module_param(noaccel, bool, 0);
1575 MODULE_PARM_DESC(noaccel, "Disable acceleration");
1576 module_param(hwcursor, int, 0644);
1577 MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
1578 "(1=enable, 0=disable, default=1)");
1579 #ifdef CONFIG_MTRR
1580 module_param(nomtrr, bool, 0);
1581 MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)");
1582 #endif
1583
1584 MODULE_DESCRIPTION("Permedia3 framebuffer device driver");
1585 MODULE_LICENSE("GPL");
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