git.oblomov.eu Git - linux-2.6/blob - 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");