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