drivers/video/sis/sis_accel.c

   1 /*
   2  * SiS 300/540/630[S]/730[S],
   3  * SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX],
   4  * XGI V3XT/V5/V8, Z7
   5  * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3
   6  *
   7  * 2D acceleration part
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the named License,
  12  * or any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
  22  *
  23  * Based on the XFree86/X.org driver which is
  24  *     Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
  25  *
  26  * Author: Thomas Winischhofer <thomas@winischhofer.net>
  27  *                      (see http://www.winischhofer.net/
  28  *                      for more information and updates)
  29  */
  30
  31 #include <linux/config.h>
  32 #include <linux/version.h>
  33 #include <linux/module.h>
  34 #include <linux/kernel.h>
  35 #include <linux/fb.h>
  36 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
  37 #include <linux/console.h>
  38 #endif
  39 #include <linux/ioport.h>
  40 #include <linux/types.h>
  41
  42 #include <asm/io.h>
  43
  44 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
  45 #include <video/fbcon.h>
  46 #include <video/fbcon-cfb8.h>
  47 #include <video/fbcon-cfb16.h>
  48 #include <video/fbcon-cfb24.h>
  49 #include <video/fbcon-cfb32.h>
  50 #endif
  51
  52 #include "sis.h"
  53 #include "sis_accel.h"
  54
  55 static const u8 sisALUConv[] =
  56 {
  57     0x00,       /* dest = 0;            0,      GXclear,        0 */
  58     0x88,       /* dest &= src;         DSa,    GXand,          0x1 */
  59     0x44,       /* dest = src & ~dest;  SDna,   GXandReverse,   0x2 */
  60     0xCC,       /* dest = src;          S,      GXcopy,         0x3 */
  61     0x22,       /* dest &= ~src;        DSna,   GXandInverted,  0x4 */
  62     0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */
  63     0x66,       /* dest = ^src;         DSx,    GXxor,          0x6 */
  64     0xEE,       /* dest |= src;         DSo,    GXor,           0x7 */
  65     0x11,       /* dest = ~src & ~dest; DSon,   GXnor,          0x8 */
  66     0x99,       /* dest ^= ~src ;       DSxn,   GXequiv,        0x9 */
  67     0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */
  68     0xDD,       /* dest = src|~dest ;   SDno,   GXorReverse,    0xB */
  69     0x33,       /* dest = ~src;         Sn,     GXcopyInverted, 0xC */
  70     0xBB,       /* dest |= ~src;        DSno,   GXorInverted,   0xD */
  71     0x77,       /* dest = ~src|~dest;   DSan,   GXnand,         0xE */
  72     0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */
  73 };
  74 /* same ROP but with Pattern as Source */
  75 static const u8 sisPatALUConv[] =
  76 {
  77     0x00,       /* dest = 0;            0,      GXclear,        0 */
  78     0xA0,       /* dest &= src;         DPa,    GXand,          0x1 */
  79     0x50,       /* dest = src & ~dest;  PDna,   GXandReverse,   0x2 */
  80     0xF0,       /* dest = src;          P,      GXcopy,         0x3 */
  81     0x0A,       /* dest &= ~src;        DPna,   GXandInverted,  0x4 */
  82     0xAA,       /* dest = dest;         D,      GXnoop,         0x5 */
  83     0x5A,       /* dest = ^src;         DPx,    GXxor,          0x6 */
  84     0xFA,       /* dest |= src;         DPo,    GXor,           0x7 */
  85     0x05,       /* dest = ~src & ~dest; DPon,   GXnor,          0x8 */
  86     0xA5,       /* dest ^= ~src ;       DPxn,   GXequiv,        0x9 */
  87     0x55,       /* dest = ~dest;        Dn,     GXInvert,       0xA */
  88     0xF5,       /* dest = src|~dest ;   PDno,   GXorReverse,    0xB */
  89     0x0F,       /* dest = ~src;         Pn,     GXcopyInverted, 0xC */
  90     0xAF,       /* dest |= ~src;        DPno,   GXorInverted,   0xD */
  91     0x5F,       /* dest = ~src|~dest;   DPan,   GXnand,         0xE */
  92     0xFF,       /* dest = 0xFF;         1,      GXset,          0xF */
  93 };
  94
  95 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,34)
  96 static const int myrops[] = {
  97         3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
  98 };
  99 #endif
 100
 101 /* 300 series ----------------------------------------------------- */
 102 #ifdef CONFIG_FB_SIS_300
 103 static void
 104 SiS300Sync(struct sis_video_info *ivideo)
 105 {
 106         SiS300Idle
 107 }
 108
 109 static void
 110 SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,
 111                                  int rop, int trans_color)
 112 {
 113         SiS300SetupDSTColorDepth(ivideo->DstColor);
 114         SiS300SetupSRCPitch(ivideo->video_linelength)
 115         SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
 116
 117         if(trans_color != -1) {
 118                 SiS300SetupROP(0x0A)
 119                 SiS300SetupSRCTrans(trans_color)
 120                 SiS300SetupCMDFlag(TRANSPARENT_BITBLT)
 121         } else {
 122                 SiS300SetupROP(sisALUConv[rop])
 123         }
 124         if(xdir > 0) {
 125                 SiS300SetupCMDFlag(X_INC)
 126         }
 127         if(ydir > 0) {
 128                 SiS300SetupCMDFlag(Y_INC)
 129         }
 130 }
 131
 132 static void
 133 SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x,
 134                                    int src_y, int dst_x, int dst_y, int width, int height)
 135 {
 136         u32 srcbase = 0, dstbase = 0;
 137
 138         if(src_y >= 2048) {
 139                 srcbase = ivideo->video_linelength * src_y;
 140                 src_y = 0;
 141         }
 142         if(dst_y >= 2048) {
 143                 dstbase = ivideo->video_linelength * dst_y;
 144                 dst_y = 0;
 145         }
 146
 147         SiS300SetupSRCBase(srcbase);
 148         SiS300SetupDSTBase(dstbase);
 149
 150         if(!(ivideo->CommandReg & X_INC))  {
 151                 src_x += width-1;
 152                 dst_x += width-1;
 153         }
 154         if(!(ivideo->CommandReg & Y_INC))  {
 155                 src_y += height-1;
 156                 dst_y += height-1;
 157         }
 158         SiS300SetupRect(width, height)
 159         SiS300SetupSRCXY(src_x, src_y)
 160         SiS300SetupDSTXY(dst_x, dst_y)
 161         SiS300DoCMD
 162 }
 163
 164 static void
 165 SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
 166 {
 167         SiS300SetupPATFG(color)
 168         SiS300SetupDSTRect(ivideo->video_linelength, 0xffff)
 169         SiS300SetupDSTColorDepth(ivideo->DstColor);
 170         SiS300SetupROP(sisPatALUConv[rop])
 171         SiS300SetupCMDFlag(PATFG)
 172 }
 173
 174 static void
 175 SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
 176 {
 177         u32 dstbase = 0;
 178
 179         if(y >= 2048) {
 180                 dstbase = ivideo->video_linelength * y;
 181                 y = 0;
 182         }
 183         SiS300SetupDSTBase(dstbase)
 184         SiS300SetupDSTXY(x,y)
 185         SiS300SetupRect(w,h)
 186         SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT)
 187         SiS300DoCMD
 188 }
 189 #endif
 190
 191 /* 315/330/340 series ---------------------------------------------- */
 192
 193 #ifdef CONFIG_FB_SIS_315
 194 static void
 195 SiS310Sync(struct sis_video_info *ivideo)
 196 {
 197         SiS310Idle
 198 }
 199
 200 static void
 201 SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color)
 202 {
 203         SiS310SetupDSTColorDepth(ivideo->DstColor);
 204         SiS310SetupSRCPitch(ivideo->video_linelength)
 205         SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
 206         if(trans_color != -1) {
 207                 SiS310SetupROP(0x0A)
 208                 SiS310SetupSRCTrans(trans_color)
 209                 SiS310SetupCMDFlag(TRANSPARENT_BITBLT)
 210         } else {
 211                 SiS310SetupROP(sisALUConv[rop])
 212                 /* Set command - not needed, both 0 */
 213                 /* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */
 214         }
 215         SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth)
 216         /* The chip is smart enough to know the direction */
 217 }
 218
 219 static void
 220 SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,
 221                          int dst_x, int dst_y, int width, int height)
 222 {
 223         u32 srcbase = 0, dstbase = 0;
 224         int mymin = min(src_y, dst_y);
 225         int mymax = max(src_y, dst_y);
 226
 227         /* Although the chip knows the direction to use
 228          * if the source and destination areas overlap,
 229          * that logic fails if we fiddle with the bitmap
 230          * addresses. Therefore, we check if the source
 231          * and destination blitting areas overlap and
 232          * adapt the bitmap addresses synchronously
 233          * if the coordinates exceed the valid range.
 234          * The the areas do not overlap, we do our
 235          * normal check.
 236          */
 237         if((mymax - mymin) < height) {
 238                 if((src_y >= 2048) || (dst_y >= 2048)) {
 239                         srcbase = ivideo->video_linelength * mymin;
 240                         dstbase = ivideo->video_linelength * mymin;
 241                         src_y -= mymin;
 242                         dst_y -= mymin;
 243                 }
 244         } else {
 245                 if(src_y >= 2048) {
 246                         srcbase = ivideo->video_linelength * src_y;
 247                         src_y = 0;
 248                 }
 249                 if(dst_y >= 2048) {
 250                         dstbase = ivideo->video_linelength * dst_y;
 251                         dst_y = 0;
 252                 }
 253         }
 254
 255         srcbase += ivideo->video_offset;
 256         dstbase += ivideo->video_offset;
 257
 258         SiS310SetupSRCBase(srcbase);
 259         SiS310SetupDSTBase(dstbase);
 260         SiS310SetupRect(width, height)
 261         SiS310SetupSRCXY(src_x, src_y)
 262         SiS310SetupDSTXY(dst_x, dst_y)
 263         SiS310DoCMD
 264 }
 265
 266 static void
 267 SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
 268 {
 269         SiS310SetupPATFG(color)
 270         SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff)
 271         SiS310SetupDSTColorDepth(ivideo->DstColor);
 272         SiS310SetupROP(sisPatALUConv[rop])
 273         SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)
 274 }
 275
 276 static void
 277 SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
 278 {
 279         u32 dstbase = 0;
 280
 281         if(y >= 2048) {
 282                 dstbase = ivideo->video_linelength * y;
 283                 y = 0;
 284         }
 285         dstbase += ivideo->video_offset;
 286         SiS310SetupDSTBase(dstbase)
 287         SiS310SetupDSTXY(x,y)
 288         SiS310SetupRect(w,h)
 289         SiS310SetupCMDFlag(BITBLT)
 290         SiS310DoCMD
 291 }
 292 #endif
 293
 294 /* --------------------------------------------------------------------- */
 295
 296 /* The exported routines */
 297
 298 int sisfb_initaccel(struct sis_video_info *ivideo)
 299 {
 300 #ifdef SISFB_USE_SPINLOCKS
 301         spin_lock_init(&ivideo->lockaccel);
 302 #endif
 303         return 0;
 304 }
 305
 306 void sisfb_syncaccel(struct sis_video_info *ivideo)
 307 {
 308         if(ivideo->sisvga_engine == SIS_300_VGA) {
 309 #ifdef CONFIG_FB_SIS_300
 310                 SiS300Sync(ivideo);
 311 #endif
 312         } else {
 313 #ifdef CONFIG_FB_SIS_315
 314                 SiS310Sync(ivideo);
 315 #endif
 316         }
 317 }
 318
 319 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)  /* --------------- 2.5 --------------- */
 320
 321 int fbcon_sis_sync(struct fb_info *info)
 322 {
 323         struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
 324         CRITFLAGS
 325
 326         if((!ivideo->accel) || (!ivideo->engineok))
 327                 return 0;
 328
 329         CRITBEGIN
 330         sisfb_syncaccel(ivideo);
 331         CRITEND
 332
 333         return 0;
 334 }
 335
 336 void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 337 {
 338         struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
 339         u32 col = 0;
 340         u32 vxres = info->var.xres_virtual;
 341         u32 vyres = info->var.yres_virtual;
 342         int width, height;
 343         CRITFLAGS
 344
 345         if(info->state != FBINFO_STATE_RUNNING)
 346                 return;
 347
 348         if((!ivideo->accel) || (!ivideo->engineok)) {
 349                 cfb_fillrect(info, rect);
 350                 return;
 351         }
 352
 353         if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)
 354                 return;
 355
 356         /* Clipping */
 357         width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;
 358         height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;
 359
 360         switch(info->var.bits_per_pixel) {
 361         case 8:  col = rect->color;
 362                  break;
 363         case 16:
 364         case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
 365                  break;
 366         }
 367
 368         if(ivideo->sisvga_engine == SIS_300_VGA) {
 369 #ifdef CONFIG_FB_SIS_300
 370                 CRITBEGIN
 371                 SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);
 372                 SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
 373                 CRITEND
 374 #endif
 375         } else {
 376 #ifdef CONFIG_FB_SIS_315
 377                 CRITBEGIN
 378                 SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);
 379                 SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
 380                 CRITEND
 381 #endif
 382         }
 383
 384         sisfb_syncaccel(ivideo);
 385 }
 386
 387 void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 388 {
 389         struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
 390         u32 vxres = info->var.xres_virtual;
 391         u32 vyres = info->var.yres_virtual;
 392         int width = area->width;
 393         int height = area->height;
 394         CRITFLAGS
 395
 396         if(info->state != FBINFO_STATE_RUNNING)
 397                 return;
 398
 399         if((!ivideo->accel) || (!ivideo->engineok)) {
 400                 cfb_copyarea(info, area);
 401                 return;
 402         }
 403
 404         if(!width || !height ||
 405            area->sx >= vxres || area->sy >= vyres ||
 406            area->dx >= vxres || area->dy >= vyres)
 407                 return;
 408
 409         /* Clipping */
 410         if((area->sx + width) > vxres) width = vxres - area->sx;
 411         if((area->dx + width) > vxres) width = vxres - area->dx;
 412         if((area->sy + height) > vyres) height = vyres - area->sy;
 413         if((area->dy + height) > vyres) height = vyres - area->dy;
 414
 415         if(ivideo->sisvga_engine == SIS_300_VGA) {
 416 #ifdef CONFIG_FB_SIS_300
 417                 int xdir, ydir;
 418
 419                 if(area->sx < area->dx) xdir = 0;
 420                 else                    xdir = 1;
 421                 if(area->sy < area->dy) ydir = 0;
 422                 else                    ydir = 1;
 423
 424                 CRITBEGIN
 425                 SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3, -1);
 426                 SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
 427                                         area->dx, area->dy, width, height);
 428                 CRITEND
 429 #endif
 430         } else {
 431 #ifdef CONFIG_FB_SIS_315
 432                 CRITBEGIN
 433                 SiS310SetupForScreenToScreenCopy(ivideo, 3, -1);
 434                 SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
 435                                         area->dx, area->dy, width, height);
 436                 CRITEND
 437 #endif
 438         }
 439
 440         sisfb_syncaccel(ivideo);
 441 }
 442
 443 #endif
 444
 445 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)  /* -------------- 2.4 --------------- */
 446
 447 #include "sisfb_accel_2_4.h"
 448
 449 #endif /* KERNEL VERSION */
 450
 451