drivers/video/fbdev/matrox/matroxfb_accel.c

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