drivers/video/fbdev/pm3fb.c

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