kernel/drivers/video/fbdev/matrox/matroxfb_accel.c

   1 /*
   2  *
   3  * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200 and G400
   4  *
   5  * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
   6  *
   7  * Version: 1.65 2002/08/14
   8  *
   9  * MTRR stuff: 1998 Tom Rini <trini@kernel.crashing.org>
  10  *
  11  * Contributors: "menion?" <menion@mindless.com>
  12  *                     Betatesting, fixes, ideas
  13  *
  14  *               "Kurt Garloff" <garloff@suse.de>
  15  *                     Betatesting, fixes, ideas, videomodes, videomodes timmings
  16  *
  17  *               "Tom Rini" <trini@kernel.crashing.org>
  18  *                     MTRR stuff, PPC cleanups, betatesting, fixes, ideas
  19  *
  20  *               "Bibek Sahu" <scorpio@dodds.net>
  21  *                     Access device through readb|w|l and write b|w|l
  22  *                     Extensive debugging stuff
  23  *
  24  *               "Daniel Haun" <haund@usa.net>
  25  *                     Testing, hardware cursor fixes
  26  *
  27  *               "Scott Wood" <sawst46+@pitt.edu>
  28  *                     Fixes
  29  *
  30  *               "Gerd Knorr" <kraxel@goldbach.isdn.cs.tu-berlin.de>
  31  *                     Betatesting
  32  *
  33  *               "Kelly French" <targon@hazmat.com>
  34  *               "Fernando Herrera" <fherrera@eurielec.etsit.upm.es>
  35  *                     Betatesting, bug reporting
  36  *
  37  *               "Pablo Bianucci" <pbian@pccp.com.ar>
  38  *                     Fixes, ideas, betatesting
  39  *
  40  *               "Inaky Perez Gonzalez" <inaky@peloncho.fis.ucm.es>
  41  *                     Fixes, enhandcements, ideas, betatesting
  42  *
  43  *               "Ryuichi Oikawa" <roikawa@rr.iiij4u.or.jp>
  44  *                     PPC betatesting, PPC support, backward compatibility
  45  *
  46  *               "Paul Womar" <Paul@pwomar.demon.co.uk>
  47  *               "Owen Waller" <O.Waller@ee.qub.ac.uk>
  48  *                     PPC betatesting
  49  *
  50  *               "Thomas Pornin" <pornin@bolet.ens.fr>
  51  *                     Alpha betatesting
  52  *
  53  *               "Pieter van Leuven" <pvl@iae.nl>
  54  *               "Ulf Jaenicke-Roessler" <ujr@physik.phy.tu-dresden.de>
  55  *                     G100 testing
  56  *
  57  *               "H. Peter Arvin" <hpa@transmeta.com>
  58  *                     Ideas
  59  *
  60  *               "Cort Dougan" <cort@cs.nmt.edu>
  61  *                     CHRP fixes and PReP cleanup
  62  *
  63  *               "Mark Vojkovich" <mvojkovi@ucsd.edu>
  64  *                     G400 support
  65  *
  66  * (following author is not in any relation with this code, but his code
  67  *  is included in this driver)
  68  *
  69  * Based on framebuffer driver for VBE 2.0 compliant graphic boards
  70  *     (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
  71  *
  72  * (following author is not in any relation with this code, but his ideas
  73  *  were used when writing this driver)
  74  *
  75  *               FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
  76  *
  77  */
  78
  79 #include "matroxfb_accel.h"
  80 #include "matroxfb_DAC1064.h"
  81 #include "matroxfb_Ti3026.h"
  82 #include "matroxfb_misc.h"
  83
  84 #define curr_ydstorg(x) ((x)->curr.ydstorg.pixels)
  85
  86 #define mga_ydstlen(y,l) mga_outl(M_YDSTLEN | M_EXEC, ((y) << 16) | (l))
  87
  88 static inline void matrox_cfb4_pal(u_int32_t* pal) {
  89         unsigned int i;
  90
  91         for (i = 0; i < 16; i++) {
  92                 pal[i] = i * 0x11111111U;
  93         }
  94 }
  95
  96 static inline void matrox_cfb8_pal(u_int32_t* pal) {
  97         unsigned int i;
  98
  99         for (i = 0; i < 16; i++) {
 100                 pal[i] = i * 0x01010101U;
 101         }
 102 }
 103
 104 static void matroxfb_copyarea(struct fb_info* info, const struct fb_copyarea* area);
 105 static void matroxfb_fillrect(struct fb_info* info, const struct fb_fillrect* rect);
 106 static void matroxfb_imageblit(struct fb_info* info, const struct fb_image* image);
 107 static void matroxfb_cfb4_fillrect(struct fb_info* info, const struct fb_fillrect* rect);
 108 static void matroxfb_cfb4_copyarea(struct fb_info* info, const struct fb_copyarea* area);
 109
 110 void matrox_cfbX_init(struct matrox_fb_info *minfo)
 111 {
 112         u_int32_t maccess;
 113         u_int32_t mpitch;
 114         u_int32_t mopmode;
 115         int accel;
 116
 117         DBG(__func__)
 118
 119         mpitch = minfo->fbcon.var.xres_virtual;
 120
 121         minfo->fbops.fb_copyarea = cfb_copyarea;
 122         minfo->fbops.fb_fillrect = cfb_fillrect;
 123         minfo->fbops.fb_imageblit = cfb_imageblit;
 124         minfo->fbops.fb_cursor = NULL;
 125
 126         accel = (minfo->fbcon.var.accel_flags & FB_ACCELF_TEXT) == FB_ACCELF_TEXT;
 127
 128         switch (minfo->fbcon.var.bits_per_pixel) {
 129                 case 4:         maccess = 0x00000000;   /* accelerate as 8bpp video */
 130                                 mpitch = (mpitch >> 1) | 0x8000; /* disable linearization */
 131                                 mopmode = M_OPMODE_4BPP;
 132                                 matrox_cfb4_pal(minfo->cmap);
 133                                 if (accel && !(mpitch & 1)) {
 134                                         minfo->fbops.fb_copyarea = matroxfb_cfb4_copyarea;
 135                                         minfo->fbops.fb_fillrect = matroxfb_cfb4_fillrect;
 136                                 }
 137                                 break;
 138                 case 8:         maccess = 0x00000000;
 139                                 mopmode = M_OPMODE_8BPP;
 140                                 matrox_cfb8_pal(minfo->cmap);
 141                                 if (accel) {
 142                                         minfo->fbops.fb_copyarea = matroxfb_copyarea;
 143                                         minfo->fbops.fb_fillrect = matroxfb_fillrect;
 144                                         minfo->fbops.fb_imageblit = matroxfb_imageblit;
 145                                 }
 146                                 break;
 147                 case 16:        if (minfo->fbcon.var.green.length == 5)
 148                                         maccess = 0xC0000001;
 149                                 else
 150                                         maccess = 0x40000001;
 151                                 mopmode = M_OPMODE_16BPP;
 152                                 if (accel) {
 153                                         minfo->fbops.fb_copyarea = matroxfb_copyarea;
 154                                         minfo->fbops.fb_fillrect = matroxfb_fillrect;
 155                                         minfo->fbops.fb_imageblit = matroxfb_imageblit;
 156                                 }
 157                                 break;
 158                 case 24:        maccess = 0x00000003;
 159                                 mopmode = M_OPMODE_24BPP;
 160                                 if (accel) {
 161                                         minfo->fbops.fb_copyarea = matroxfb_copyarea;
 162                                         minfo->fbops.fb_fillrect = matroxfb_fillrect;
 163                                         minfo->fbops.fb_imageblit = matroxfb_imageblit;
 164                                 }
 165                                 break;
 166                 case 32:        maccess = 0x00000002;
 167                                 mopmode = M_OPMODE_32BPP;
 168                                 if (accel) {
 169                                         minfo->fbops.fb_copyarea = matroxfb_copyarea;
 170                                         minfo->fbops.fb_fillrect = matroxfb_fillrect;
 171                                         minfo->fbops.fb_imageblit = matroxfb_imageblit;
 172                                 }
 173                                 break;
 174                 default:        maccess = 0x00000000;
 175                                 mopmode = 0x00000000;
 176                                 break;  /* turn off acceleration!!! */
 177         }
 178         mga_fifo(8);
 179         mga_outl(M_PITCH, mpitch);
 180         mga_outl(M_YDSTORG, curr_ydstorg(minfo));
 181         if (minfo->capable.plnwt)
 182                 mga_outl(M_PLNWT, -1);
 183         if (minfo->capable.srcorg) {
 184                 mga_outl(M_SRCORG, 0);
 185                 mga_outl(M_DSTORG, 0);
 186         }
 187         mga_outl(M_OPMODE, mopmode);
 188         mga_outl(M_CXBNDRY, 0xFFFF0000);
 189         mga_outl(M_YTOP, 0);
 190         mga_outl(M_YBOT, 0x01FFFFFF);
 191         mga_outl(M_MACCESS, maccess);
 192         minfo->accel.m_dwg_rect = M_DWG_TRAP | M_DWG_SOLID | M_DWG_ARZERO | M_DWG_SGNZERO | M_DWG_SHIFTZERO;
 193         if (isMilleniumII(minfo)) minfo->accel.m_dwg_rect |= M_DWG_TRANSC;
 194         minfo->accel.m_opmode = mopmode;
 195         minfo->accel.m_access = maccess;
 196         minfo->accel.m_pitch = mpitch;
 197 }
 198
 199 EXPORT_SYMBOL(matrox_cfbX_init);
 200
 201 static void matrox_accel_restore_maccess(struct matrox_fb_info *minfo)
 202 {
 203         mga_outl(M_MACCESS, minfo->accel.m_access);
 204         mga_outl(M_PITCH, minfo->accel.m_pitch);
 205 }
 206
 207 static void matrox_accel_bmove(struct matrox_fb_info *minfo, int vxres, int sy,
 208                                int sx, int dy, int dx, int height, int width)
 209 {
 210         int start, end;
 211         CRITFLAGS
 212
 213         DBG(__func__)
 214
 215         CRITBEGIN
 216
 217         if ((dy < sy) || ((dy == sy) && (dx <= sx))) {
 218                 mga_fifo(4);
 219                 matrox_accel_restore_maccess(minfo);
 220                 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_SGNZERO |
 221                          M_DWG_BFCOL | M_DWG_REPLACE);
 222                 mga_outl(M_AR5, vxres);
 223                 width--;
 224                 start = sy*vxres+sx+curr_ydstorg(minfo);
 225                 end = start+width;
 226         } else {
 227                 mga_fifo(5);
 228                 matrox_accel_restore_maccess(minfo);
 229                 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_BFCOL | M_DWG_REPLACE);
 230                 mga_outl(M_SGN, 5);
 231                 mga_outl(M_AR5, -vxres);
 232                 width--;
 233                 end = (sy+height-1)*vxres+sx+curr_ydstorg(minfo);
 234                 start = end+width;
 235                 dy += height-1;
 236         }
 237         mga_fifo(6);
 238         matrox_accel_restore_maccess(minfo);
 239         mga_outl(M_AR0, end);
 240         mga_outl(M_AR3, start);
 241         mga_outl(M_FXBNDRY, ((dx+width)<<16) | dx);
 242         mga_ydstlen(dy, height);
 243         WaitTillIdle();
 244
 245         CRITEND
 246 }
 247
 248 static void matrox_accel_bmove_lin(struct matrox_fb_info *minfo, int vxres,
 249                                    int sy, int sx, int dy, int dx, int height,
 250                                    int width)
 251 {
 252         int start, end;
 253         CRITFLAGS
 254
 255         DBG(__func__)
 256
 257         CRITBEGIN
 258
 259         if ((dy < sy) || ((dy == sy) && (dx <= sx))) {
 260                 mga_fifo(4);
 261                 matrox_accel_restore_maccess(minfo);
 262                 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_SGNZERO |
 263                         M_DWG_BFCOL | M_DWG_REPLACE);
 264                 mga_outl(M_AR5, vxres);
 265                 width--;
 266                 start = sy*vxres+sx+curr_ydstorg(minfo);
 267                 end = start+width;
 268         } else {
 269                 mga_fifo(5);
 270                 matrox_accel_restore_maccess(minfo);
 271                 mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_BFCOL | M_DWG_REPLACE);
 272                 mga_outl(M_SGN, 5);
 273                 mga_outl(M_AR5, -vxres);
 274                 width--;
 275                 end = (sy+height-1)*vxres+sx+curr_ydstorg(minfo);
 276                 start = end+width;
 277                 dy += height-1;
 278         }
 279         mga_fifo(7);
 280         matrox_accel_restore_maccess(minfo);
 281         mga_outl(M_AR0, end);
 282         mga_outl(M_AR3, start);
 283         mga_outl(M_FXBNDRY, ((dx+width)<<16) | dx);
 284         mga_outl(M_YDST, dy*vxres >> 5);
 285         mga_outl(M_LEN | M_EXEC, height);
 286         WaitTillIdle();
 287
 288         CRITEND
 289 }
 290
 291 static void matroxfb_cfb4_copyarea(struct fb_info* info, const struct fb_copyarea* area) {
 292         struct matrox_fb_info *minfo = info2minfo(info);
 293
 294         if ((area->sx | area->dx | area->width) & 1)
 295                 cfb_copyarea(info, area);
 296         else
 297                 matrox_accel_bmove_lin(minfo, minfo->fbcon.var.xres_virtual >> 1, area->sy, area->sx >> 1, area->dy, area->dx >> 1, area->height, area->width >> 1);
 298 }
 299
 300 static void matroxfb_copyarea(struct fb_info* info, const struct fb_copyarea* area) {
 301         struct matrox_fb_info *minfo = info2minfo(info);
 302
 303         matrox_accel_bmove(minfo, minfo->fbcon.var.xres_virtual, area->sy, area->sx, area->dy, area->dx, area->height, area->width);
 304 }
 305
 306 static void matroxfb_accel_clear(struct matrox_fb_info *minfo, u_int32_t color,
 307                                  int sy, int sx, int height, int width)
 308 {
 309         CRITFLAGS
 310
 311         DBG(__func__)
 312
 313         CRITBEGIN
 314
 315         mga_fifo(7);
 316         matrox_accel_restore_maccess(minfo);
 317         mga_outl(M_DWGCTL, minfo->accel.m_dwg_rect | M_DWG_REPLACE);
 318         mga_outl(M_FCOL, color);
 319         mga_outl(M_FXBNDRY, ((sx + width) << 16) | sx);
 320         mga_ydstlen(sy, height);
 321         WaitTillIdle();
 322
 323         CRITEND
 324 }
 325
 326 static void matroxfb_fillrect(struct fb_info* info, const struct fb_fillrect* rect) {
 327         struct matrox_fb_info *minfo = info2minfo(info);
 328
 329         switch (rect->rop) {
 330                 case ROP_COPY:
 331                         matroxfb_accel_clear(minfo, ((u_int32_t *)info->pseudo_palette)[rect->color], rect->dy, rect->dx, rect->height, rect->width);
 332                         break;
 333         }
 334 }
 335
 336 static void matroxfb_cfb4_clear(struct matrox_fb_info *minfo, u_int32_t bgx,
 337                                 int sy, int sx, int height, int width)
 338 {
 339         int whattodo;
 340         CRITFLAGS
 341
 342         DBG(__func__)
 343
 344         CRITBEGIN
 345
 346         whattodo = 0;
 347         if (sx & 1) {
 348                 sx ++;
 349                 if (!width) return;
 350                 width --;
 351                 whattodo = 1;
 352         }
 353         if (width & 1) {
 354                 whattodo |= 2;
 355         }
 356         width >>= 1;
 357         sx >>= 1;
 358         if (width) {
 359                 mga_fifo(7);
 360                 matrox_accel_restore_maccess(minfo);
 361                 mga_outl(M_DWGCTL, minfo->accel.m_dwg_rect | M_DWG_REPLACE2);
 362                 mga_outl(M_FCOL, bgx);
 363                 mga_outl(M_FXBNDRY, ((sx + width) << 16) | sx);
 364                 mga_outl(M_YDST, sy * minfo->fbcon.var.xres_virtual >> 6);
 365                 mga_outl(M_LEN | M_EXEC, height);
 366                 WaitTillIdle();
 367         }
 368         if (whattodo) {
 369                 u_int32_t step = minfo->fbcon.var.xres_virtual >> 1;
 370                 vaddr_t vbase = minfo->video.vbase;
 371                 if (whattodo & 1) {
 372                         unsigned int uaddr = sy * step + sx - 1;
 373                         u_int32_t loop;
 374                         u_int8_t bgx2 = bgx & 0xF0;
 375                         for (loop = height; loop > 0; loop --) {
 376                                 mga_writeb(vbase, uaddr, (mga_readb(vbase, uaddr) & 0x0F) | bgx2);
 377                                 uaddr += step;
 378                         }
 379                 }
 380                 if (whattodo & 2) {
 381                         unsigned int uaddr = sy * step + sx + width;
 382                         u_int32_t loop;
 383                         u_int8_t bgx2 = bgx & 0x0F;
 384                         for (loop = height; loop > 0; loop --) {
 385                                 mga_writeb(vbase, uaddr, (mga_readb(vbase, uaddr) & 0xF0) | bgx2);
 386                                 uaddr += step;
 387                         }
 388                 }
 389         }
 390
 391         CRITEND
 392 }
 393
 394 static void matroxfb_cfb4_fillrect(struct fb_info* info, const struct fb_fillrect* rect) {
 395         struct matrox_fb_info *minfo = info2minfo(info);
 396
 397         switch (rect->rop) {
 398                 case ROP_COPY:
 399                         matroxfb_cfb4_clear(minfo, ((u_int32_t *)info->pseudo_palette)[rect->color], rect->dy, rect->dx, rect->height, rect->width);
 400                         break;
 401         }
 402 }
 403
 404 static void matroxfb_1bpp_imageblit(struct matrox_fb_info *minfo, u_int32_t fgx,
 405                                     u_int32_t bgx, const u_int8_t *chardata,
 406                                     int width, int height, int yy, int xx)
 407 {
 408         u_int32_t step;
 409         u_int32_t ydstlen;
 410         u_int32_t xlen;
 411         u_int32_t ar0;
 412         u_int32_t charcell;
 413         u_int32_t fxbndry;
 414         vaddr_t mmio;
 415         int easy;
 416         CRITFLAGS
 417
 418         DBG_HEAVY(__func__);
 419
 420         step = (width + 7) >> 3;
 421         charcell = height * step;
 422         xlen = (charcell + 3) & ~3;
 423         ydstlen = (yy << 16) | height;
 424         if (width == step << 3) {
 425                 ar0 = height * width - 1;
 426                 easy = 1;
 427         } else {
 428                 ar0 = width - 1;
 429                 easy = 0;
 430         }
 431
 432         CRITBEGIN
 433
 434         mga_fifo(5);
 435         matrox_accel_restore_maccess(minfo);
 436         if (easy)
 437                 mga_outl(M_DWGCTL, M_DWG_ILOAD | M_DWG_SGNZERO | M_DWG_SHIFTZERO | M_DWG_BMONOWF | M_DWG_LINEAR | M_DWG_REPLACE);
 438         else
 439                 mga_outl(M_DWGCTL, M_DWG_ILOAD | M_DWG_SGNZERO | M_DWG_SHIFTZERO | M_DWG_BMONOWF | M_DWG_REPLACE);
 440         mga_outl(M_FCOL, fgx);
 441         mga_outl(M_BCOL, bgx);
 442         fxbndry = ((xx + width - 1) << 16) | xx;
 443         mmio = minfo->mmio.vbase;
 444
 445         mga_fifo(8);
 446         matrox_accel_restore_maccess(minfo);
 447         mga_writel(mmio, M_FXBNDRY, fxbndry);
 448         mga_writel(mmio, M_AR0, ar0);
 449         mga_writel(mmio, M_AR3, 0);
 450         if (easy) {
 451                 mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
 452                 mga_memcpy_toio(mmio, chardata, xlen);
 453         } else {
 454                 mga_writel(mmio, M_AR5, 0);
 455                 mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
 456                 if ((step & 3) == 0) {
 457                         /* Great. Source has 32bit aligned lines, so we can feed them
 458                            directly to the accelerator. */
 459                         mga_memcpy_toio(mmio, chardata, charcell);
 460                 } else if (step == 1) {
 461                         /* Special case for 1..8bit widths */
 462                         while (height--) {
 463 #if defined(__BIG_ENDIAN)
 464                                 fb_writel((*chardata) << 24, mmio.vaddr);
 465 #else
 466                                 fb_writel(*chardata, mmio.vaddr);
 467 #endif
 468                                 chardata++;
 469                         }
 470                 } else if (step == 2) {
 471                         /* Special case for 9..15bit widths */
 472                         while (height--) {
 473 #if defined(__BIG_ENDIAN)
 474                                 fb_writel((*(u_int16_t*)chardata) << 16, mmio.vaddr);
 475 #else
 476                                 fb_writel(*(u_int16_t*)chardata, mmio.vaddr);
 477 #endif
 478                                 chardata += 2;
 479                         }
 480                 } else {
 481                         /* Tell... well, why bother... */
 482                         while (height--) {
 483                                 size_t i;
 484
 485                                 for (i = 0; i < step; i += 4) {
 486                                         /* Hope that there are at least three readable bytes beyond the end of bitmap */
 487                                         fb_writel(get_unaligned((u_int32_t*)(chardata + i)),mmio.vaddr);
 488                                 }
 489                                 chardata += step;
 490                         }
 491                 }
 492         }
 493         WaitTillIdle();
 494         CRITEND
 495 }
 496
 497
 498 static void matroxfb_imageblit(struct fb_info* info, const struct fb_image* image) {
 499         struct matrox_fb_info *minfo = info2minfo(info);
 500
 501         DBG_HEAVY(__func__);
 502
 503         if (image->depth == 1) {
 504                 u_int32_t fgx, bgx;
 505
 506                 fgx = ((u_int32_t*)info->pseudo_palette)[image->fg_color];
 507                 bgx = ((u_int32_t*)info->pseudo_palette)[image->bg_color];
 508                 matroxfb_1bpp_imageblit(minfo, fgx, bgx, image->data, image->width, image->height, image->dy, image->dx);
 509         } else {
 510                 /* Danger! image->depth is useless: logo painting code always
 511                    passes framebuffer color depth here, although logo data are
 512                    always 8bpp and info->pseudo_palette is changed to contain
 513                    logo palette to be used (but only for true/direct-color... sic...).
 514                    So do it completely in software... */
 515                 cfb_imageblit(info, image);
 516         }
 517 }
 518
 519 MODULE_LICENSE("GPL");