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