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