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