Merge git://git.infradead.org/~dwmw2/mtd-2.6.26
[linux-2.6] / drivers / video / pm3fb.c
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                 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 __devinit 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(mode_option, charp, 0);
1575 MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
1576 module_param(noaccel, bool, 0);
1577 MODULE_PARM_DESC(noaccel, "Disable acceleration");
1578 module_param(hwcursor, int, 0644);
1579 MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
1580                         "(1=enable, 0=disable, default=1)");
1581 #ifdef CONFIG_MTRR
1582 module_param(nomtrr, bool, 0);
1583 MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)");
1584 #endif
1585
1586 MODULE_DESCRIPTION("Permedia3 framebuffer device driver");
1587 MODULE_LICENSE("GPL");