drivers/staging/xgifb/XGI_accel.c

   1 /*
   2  * XGI 300/630/730/540/315/550/650/740 frame buffer driver
   3  * for Linux kernels 2.4.x and 2.5.x
   4  *
   5  * 2D acceleration part
   6  *
   7  * Based on the X driver's XGI300_accel.c which is
   8  *     Copyright Xavier Ducoin <x.ducoin@lectra.com>
   9  *     Copyright 2002 by Thomas Winischhofer, Vienna, Austria
  10  * and XGI310_accel.c which is
  11  *     Copyright 2002 by Thomas Winischhofer, Vienna, Austria
  12  *
  13  * Author: Thomas Winischhofer <thomas@winischhofer.net>
  14  *                      (see http://www.winischhofer.net/
  15  *                      for more information and updates)
  16  */
  17
  18 //#include <linux/config.h>
  19 #include <linux/version.h>
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/errno.h>
  23 #include <linux/string.h>
  24 #include <linux/mm.h>
  25 #include <linux/tty.h>
  26 #include <linux/slab.h>
  27 #include <linux/delay.h>
  28 #include <linux/fb.h>
  29 #include <linux/console.h>
  30 #include <linux/selection.h>
  31 #include <linux/ioport.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/vt_kern.h>
  35 #include <linux/capability.h>
  36 #include <linux/fs.h>
  37 #include <linux/agp_backend.h>
  38
  39 #include <linux/types.h>
  40 #include <asm/io.h>
  41
  42 #ifdef CONFIG_MTRR
  43 #include <asm/mtrr.h>
  44 #endif
  45
  46 #include "vgatypes.h"
  47 #include "vb_struct.h"
  48 #include "XGIfb.h"
  49 #include "XGI_accel.h"
  50
  51
  52 extern struct     video_info xgi_video_info;
  53 extern int XGIfb_accel;
  54
  55 static const int XGIALUConv[] =
  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 int XGIPatALUConv[] =
  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 static const unsigned char myrops[] = {
  96         3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
  97    };
  98
  99 /* 300 series */
 100 #if 0
 101 static void
 102 XGI300Sync(void)
 103 {
 104         XGI300Idle
 105 }
 106 #endif
 107 static void
 108 XGI310Sync(void)
 109 {
 110         XGI310Idle
 111 }
 112 #if 0
 113 static void
 114 XGI300SetupForScreenToScreenCopy(int xdir, int ydir, int rop,
 115                                 unsigned int planemask, int trans_color)
 116 {
 117         XGI300SetupDSTColorDepth(xgi_video_info.DstColor);
 118         XGI300SetupSRCPitch(xgi_video_info.video_linelength)
 119         XGI300SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
 120
 121         if(trans_color != -1) {
 122                 XGI300SetupROP(0x0A)
 123                 XGI300SetupSRCTrans(trans_color)
 124                 XGI300SetupCMDFlag(TRANSPARENT_BITBLT)
 125         } else {
 126                 XGI300SetupROP(XGIALUConv[rop])
 127         }
 128         if(xdir > 0) {
 129                 XGI300SetupCMDFlag(X_INC)
 130         }
 131         if(ydir > 0) {
 132                 XGI300SetupCMDFlag(Y_INC)
 133         }
 134 }
 135
 136 static void
 137 XGI300SubsequentScreenToScreenCopy(int src_x, int src_y, int dst_x, int dst_y,
 138                                 int width, int height)
 139 {
 140         long srcbase, dstbase;
 141
 142         srcbase = dstbase = 0;
 143         if (src_y >= 2048) {
 144                 srcbase = xgi_video_info.video_linelength * src_y;
 145                 src_y = 0;
 146         }
 147         if (dst_y >= 2048) {
 148                 dstbase = xgi_video_info.video_linelength * dst_y;
 149                 dst_y = 0;
 150         }
 151
 152         XGI300SetupSRCBase(srcbase);
 153         XGI300SetupDSTBase(dstbase);
 154
 155         if(!(xgi_video_info.CommandReg & X_INC))  {
 156                 src_x += width-1;
 157                 dst_x += width-1;
 158         }
 159         if(!(xgi_video_info.CommandReg & Y_INC))  {
 160                 src_y += height-1;
 161                 dst_y += height-1;
 162         }
 163         XGI300SetupRect(width, height)
 164         XGI300SetupSRCXY(src_x, src_y)
 165         XGI300SetupDSTXY(dst_x, dst_y)
 166         XGI300DoCMD
 167 }
 168
 169 static void
 170 XGI300SetupForSolidFill(int color, int rop, unsigned int planemask)
 171 {
 172         XGI300SetupPATFG(color)
 173         XGI300SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
 174         XGI300SetupDSTColorDepth(xgi_video_info.DstColor);
 175         XGI300SetupROP(XGIPatALUConv[rop])
 176         XGI300SetupCMDFlag(PATFG)
 177 }
 178
 179 static void
 180 XGI300SubsequentSolidFillRect(int x, int y, int w, int h)
 181 {
 182         long dstbase;
 183
 184         dstbase = 0;
 185         if(y >= 2048) {
 186                 dstbase = xgi_video_info.video_linelength * y;
 187                 y = 0;
 188         }
 189         XGI300SetupDSTBase(dstbase)
 190         XGI300SetupDSTXY(x,y)
 191         XGI300SetupRect(w,h)
 192         XGI300SetupCMDFlag(X_INC | Y_INC | BITBLT)
 193         XGI300DoCMD
 194 }
 195 #endif
 196 /* 310/325 series ------------------------------------------------ */
 197
 198 static void
 199 XGI310SetupForScreenToScreenCopy(int xdir, int ydir, int rop,
 200                                 unsigned int planemask, int trans_color)
 201 {
 202         XGI310SetupDSTColorDepth(xgi_video_info.DstColor);
 203         XGI310SetupSRCPitch(xgi_video_info.video_linelength)
 204         XGI310SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
 205         if (trans_color != -1) {
 206                 XGI310SetupROP(0x0A)
 207                 XGI310SetupSRCTrans(trans_color)
 208                 XGI310SetupCMDFlag(TRANSPARENT_BITBLT)
 209         } else {
 210                 XGI310SetupROP(XGIALUConv[rop])
 211                 /* Set command - not needed, both 0 */
 212                 /* XGISetupCMDFlag(BITBLT | SRCVIDEO) */
 213         }
 214         XGI310SetupCMDFlag(xgi_video_info.XGI310_AccelDepth)
 215         /* TW: The 310/325 series is smart enough to know the direction */
 216 }
 217
 218 static void
 219 XGI310SubsequentScreenToScreenCopy(int src_x, int src_y, int dst_x, int dst_y,
 220                                 int width, int height)
 221 {
 222         long srcbase, dstbase;
 223         int mymin, mymax;
 224
 225         srcbase = dstbase = 0;
 226         mymin = min(src_y, dst_y);
 227         mymax = max(src_y, dst_y);
 228
 229         /* Although the chip knows the direction to use
 230          * if the source and destination areas overlap,
 231          * that logic fails if we fiddle with the bitmap
 232          * addresses. Therefore, we check if the source
 233          * and destination blitting areas overlap and
 234          * adapt the bitmap addresses synchronously
 235          * if the coordinates exceed the valid range.
 236          * The the areas do not overlap, we do our
 237          * normal check.
 238          */
 239         if((mymax - mymin) < height) {
 240            if((src_y >= 2048) || (dst_y >= 2048)) {
 241               srcbase = xgi_video_info.video_linelength * mymin;
 242               dstbase = xgi_video_info.video_linelength * mymin;
 243               src_y -= mymin;
 244               dst_y -= mymin;
 245            }
 246         } else {
 247            if(src_y >= 2048) {
 248               srcbase = xgi_video_info.video_linelength * src_y;
 249               src_y = 0;
 250            }
 251            if(dst_y >= 2048) {
 252               dstbase = xgi_video_info.video_linelength * dst_y;
 253               dst_y = 0;
 254            }
 255         }
 256
 257         XGI310SetupSRCBase(srcbase);
 258         XGI310SetupDSTBase(dstbase);
 259         XGI310SetupRect(width, height)
 260         XGI310SetupSRCXY(src_x, src_y)
 261         XGI310SetupDSTXY(dst_x, dst_y)
 262         XGI310DoCMD
 263 }
 264
 265 static void
 266 XGI310SetupForSolidFill(int color, int rop, unsigned int planemask)
 267 {
 268         XGI310SetupPATFG(color)
 269         XGI310SetupDSTRect(xgi_video_info.video_linelength, 0xFFF)
 270         XGI310SetupDSTColorDepth(xgi_video_info.DstColor);
 271         XGI310SetupROP(XGIPatALUConv[rop])
 272         XGI310SetupCMDFlag(PATFG | xgi_video_info.XGI310_AccelDepth)
 273 }
 274
 275 static void
 276 XGI310SubsequentSolidFillRect(int x, int y, int w, int h)
 277 {
 278         long dstbase;
 279
 280         dstbase = 0;
 281         if(y >= 2048) {
 282                 dstbase = xgi_video_info.video_linelength * y;
 283                 y = 0;
 284         }
 285         XGI310SetupDSTBase(dstbase)
 286         XGI310SetupDSTXY(x,y)
 287         XGI310SetupRect(w,h)
 288         XGI310SetupCMDFlag(BITBLT)
 289         XGI310DoCMD
 290 }
 291
 292 /* --------------------------------------------------------------------- */
 293
 294 /* The exported routines */
 295
 296 int XGIfb_initaccel(void)
 297 {
 298 #ifdef XGIFB_USE_SPINLOCKS
 299     spin_lock_init(&xgi_video_info.lockaccel);
 300 #endif
 301     return(0);
 302 }
 303
 304 void XGIfb_syncaccel(void)
 305 {
 306
 307     XGI310Sync();
 308
 309 }
 310
 311 int fbcon_XGI_sync(struct fb_info *info)
 312 {
 313     if(!XGIfb_accel) return 0;
 314     CRITFLAGS
 315
 316     XGI310Sync();
 317
 318    CRITEND
 319    return 0;
 320 }
 321
 322 void fbcon_XGI_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 323 {
 324    int col=0;
 325    CRITFLAGS
 326
 327
 328    if(!rect->width || !rect->height)
 329         return;
 330
 331    if(!XGIfb_accel) {
 332         cfb_fillrect(info, rect);
 333         return;
 334    }
 335
 336    switch(info->var.bits_per_pixel) {
 337                 case 8: col = rect->color;
 338                         break;
 339                 case 16: col = ((u32 *)(info->pseudo_palette))[rect->color];
 340                          break;
 341                 case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
 342                          break;
 343         }
 344
 345
 346            CRITBEGIN
 347            XGI310SetupForSolidFill(col, myrops[rect->rop], 0);
 348            XGI310SubsequentSolidFillRect(rect->dx, rect->dy, rect->width, rect->height);
 349            CRITEND
 350            XGI310Sync();
 351
 352
 353 }
 354
 355 void fbcon_XGI_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 356 {
 357    int xdir, ydir;
 358    CRITFLAGS
 359
 360
 361    if(!XGIfb_accel) {
 362         cfb_copyarea(info, area);
 363         return;
 364    }
 365
 366    if(!area->width || !area->height)
 367         return;
 368
 369    if(area->sx < area->dx) xdir = 0;
 370    else                    xdir = 1;
 371    if(area->sy < area->dy) ydir = 0;
 372    else                    ydir = 1;
 373
 374       CRITBEGIN
 375       XGI310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
 376       XGI310SubsequentScreenToScreenCopy(area->sx, area->sy, area->dx, area->dy, area->width, area->height);
 377       CRITEND
 378       XGI310Sync();
 379
 380 }
 381
 382
 383