drivers/video/aty/radeon_accel.c

   1 #include "radeonfb.h"
   2
   3 /* the accelerated functions here are patterned after the
   4  * "ACCEL_MMIO" ifdef branches in XFree86
   5  * --dte
   6  */
   7
   8 static void radeon_fixup_offset(struct radeonfb_info *rinfo)
   9 {
  10         u32 local_base;
  11
  12         /* *** Ugly workaround *** */
  13         /*
  14          * On some platforms, the video memory is mapped at 0 in radeon chip space
  15          * (like PPCs) by the firmware. X will always move it up so that it's seen
  16          * by the chip to be at the same address as the PCI BAR.
  17          * That means that when switching back from X, there is a mismatch between
  18          * the offsets programmed into the engine. This means that potentially,
  19          * accel operations done before radeonfb has a chance to re-init the engine
  20          * will have incorrect offsets, and potentially trash system memory !
  21          *
  22          * The correct fix is for fbcon to never call any accel op before the engine
  23          * has properly been re-initialized (by a call to set_var), but this is a
  24          * complex fix. This workaround in the meantime, called before every accel
  25          * operation, makes sure the offsets are in sync.
  26          */
  27
  28         radeon_fifo_wait (1);
  29         local_base = INREG(MC_FB_LOCATION) << 16;
  30         if (local_base == rinfo->fb_local_base)
  31                 return;
  32
  33         rinfo->fb_local_base = local_base;
  34
  35         radeon_fifo_wait (3);
  36         OUTREG(DEFAULT_PITCH_OFFSET, (rinfo->pitch << 0x16) |
  37                                      (rinfo->fb_local_base >> 10));
  38         OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
  39         OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
  40 }
  41
  42 static void radeonfb_prim_fillrect(struct radeonfb_info *rinfo,
  43                                    const struct fb_fillrect *region)
  44 {
  45         radeon_fifo_wait(4);
  46
  47         OUTREG(DP_GUI_MASTER_CNTL,
  48                 rinfo->dp_gui_master_cntl  /* contains, like GMC_DST_32BPP */
  49                 | GMC_BRUSH_SOLID_COLOR
  50                 | ROP3_P);
  51         if (radeon_get_dstbpp(rinfo->depth) != DST_8BPP)
  52                 OUTREG(DP_BRUSH_FRGD_CLR, rinfo->pseudo_palette[region->color]);
  53         else
  54                 OUTREG(DP_BRUSH_FRGD_CLR, region->color);
  55         OUTREG(DP_WRITE_MSK, 0xffffffff);
  56         OUTREG(DP_CNTL, (DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM));
  57
  58         radeon_fifo_wait(2);
  59         OUTREG(DST_Y_X, (region->dy << 16) | region->dx);
  60         OUTREG(DST_WIDTH_HEIGHT, (region->width << 16) | region->height);
  61 }
  62
  63 void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
  64 {
  65         struct radeonfb_info *rinfo = info->par;
  66         struct fb_fillrect modded;
  67         int vxres, vyres;
  68
  69         if (info->state != FBINFO_STATE_RUNNING)
  70                 return;
  71         if (info->flags & FBINFO_HWACCEL_DISABLED) {
  72                 cfb_fillrect(info, region);
  73                 return;
  74         }
  75
  76         radeon_fixup_offset(rinfo);
  77
  78         vxres = info->var.xres_virtual;
  79         vyres = info->var.yres_virtual;
  80
  81         memcpy(&modded, region, sizeof(struct fb_fillrect));
  82
  83         if(!modded.width || !modded.height ||
  84            modded.dx >= vxres || modded.dy >= vyres)
  85                 return;
  86
  87         if(modded.dx + modded.width  > vxres) modded.width  = vxres - modded.dx;
  88         if(modded.dy + modded.height > vyres) modded.height = vyres - modded.dy;
  89
  90         radeonfb_prim_fillrect(rinfo, &modded);
  91 }
  92
  93 static void radeonfb_prim_copyarea(struct radeonfb_info *rinfo,
  94                                    const struct fb_copyarea *area)
  95 {
  96         int xdir, ydir;
  97         u32 sx, sy, dx, dy, w, h;
  98
  99         w = area->width; h = area->height;
 100         dx = area->dx; dy = area->dy;
 101         sx = area->sx; sy = area->sy;
 102         xdir = sx - dx;
 103         ydir = sy - dy;
 104
 105         if ( xdir < 0 ) { sx += w-1; dx += w-1; }
 106         if ( ydir < 0 ) { sy += h-1; dy += h-1; }
 107
 108         radeon_fifo_wait(3);
 109         OUTREG(DP_GUI_MASTER_CNTL,
 110                 rinfo->dp_gui_master_cntl /* i.e. GMC_DST_32BPP */
 111                 | GMC_BRUSH_NONE
 112                 | GMC_SRC_DSTCOLOR
 113                 | ROP3_S
 114                 | DP_SRC_SOURCE_MEMORY );
 115         OUTREG(DP_WRITE_MSK, 0xffffffff);
 116         OUTREG(DP_CNTL, (xdir>=0 ? DST_X_LEFT_TO_RIGHT : 0)
 117                         | (ydir>=0 ? DST_Y_TOP_TO_BOTTOM : 0));
 118
 119         radeon_fifo_wait(3);
 120         OUTREG(SRC_Y_X, (sy << 16) | sx);
 121         OUTREG(DST_Y_X, (dy << 16) | dx);
 122         OUTREG(DST_HEIGHT_WIDTH, (h << 16) | w);
 123 }
 124
 125
 126 void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 127 {
 128         struct radeonfb_info *rinfo = info->par;
 129         struct fb_copyarea modded;
 130         u32 vxres, vyres;
 131         modded.sx = area->sx;
 132         modded.sy = area->sy;
 133         modded.dx = area->dx;
 134         modded.dy = area->dy;
 135         modded.width  = area->width;
 136         modded.height = area->height;
 137
 138         if (info->state != FBINFO_STATE_RUNNING)
 139                 return;
 140         if (info->flags & FBINFO_HWACCEL_DISABLED) {
 141                 cfb_copyarea(info, area);
 142                 return;
 143         }
 144
 145         radeon_fixup_offset(rinfo);
 146
 147         vxres = info->var.xres_virtual;
 148         vyres = info->var.yres_virtual;
 149
 150         if(!modded.width || !modded.height ||
 151            modded.sx >= vxres || modded.sy >= vyres ||
 152            modded.dx >= vxres || modded.dy >= vyres)
 153                 return;
 154
 155         if(modded.sx + modded.width > vxres)  modded.width = vxres - modded.sx;
 156         if(modded.dx + modded.width > vxres)  modded.width = vxres - modded.dx;
 157         if(modded.sy + modded.height > vyres) modded.height = vyres - modded.sy;
 158         if(modded.dy + modded.height > vyres) modded.height = vyres - modded.dy;
 159
 160         radeonfb_prim_copyarea(rinfo, &modded);
 161 }
 162
 163 void radeonfb_imageblit(struct fb_info *info, const struct fb_image *image)
 164 {
 165         struct radeonfb_info *rinfo = info->par;
 166
 167         if (info->state != FBINFO_STATE_RUNNING)
 168                 return;
 169         radeon_engine_idle();
 170
 171         cfb_imageblit(info, image);
 172 }
 173
 174 int radeonfb_sync(struct fb_info *info)
 175 {
 176         struct radeonfb_info *rinfo = info->par;
 177
 178         if (info->state != FBINFO_STATE_RUNNING)
 179                 return 0;
 180         radeon_engine_idle();
 181
 182         return 0;
 183 }
 184
 185 void radeonfb_engine_reset(struct radeonfb_info *rinfo)
 186 {
 187         u32 clock_cntl_index, mclk_cntl, rbbm_soft_reset;
 188         u32 host_path_cntl;
 189
 190         radeon_engine_flush (rinfo);
 191
 192         clock_cntl_index = INREG(CLOCK_CNTL_INDEX);
 193         mclk_cntl = INPLL(MCLK_CNTL);
 194
 195         OUTPLL(MCLK_CNTL, (mclk_cntl |
 196                            FORCEON_MCLKA |
 197                            FORCEON_MCLKB |
 198                            FORCEON_YCLKA |
 199                            FORCEON_YCLKB |
 200                            FORCEON_MC |
 201                            FORCEON_AIC));
 202
 203         host_path_cntl = INREG(HOST_PATH_CNTL);
 204         rbbm_soft_reset = INREG(RBBM_SOFT_RESET);
 205
 206         if (rinfo->family == CHIP_FAMILY_R300 ||
 207             rinfo->family == CHIP_FAMILY_R350 ||
 208             rinfo->family == CHIP_FAMILY_RV350) {
 209                 u32 tmp;
 210
 211                 OUTREG(RBBM_SOFT_RESET, (rbbm_soft_reset |
 212                                          SOFT_RESET_CP |
 213                                          SOFT_RESET_HI |
 214                                          SOFT_RESET_E2));
 215                 INREG(RBBM_SOFT_RESET);
 216                 OUTREG(RBBM_SOFT_RESET, 0);
 217                 tmp = INREG(RB2D_DSTCACHE_MODE);
 218                 OUTREG(RB2D_DSTCACHE_MODE, tmp | (1 << 17)); /* FIXME */
 219         } else {
 220                 OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset |
 221                                         SOFT_RESET_CP |
 222                                         SOFT_RESET_HI |
 223                                         SOFT_RESET_SE |
 224                                         SOFT_RESET_RE |
 225                                         SOFT_RESET_PP |
 226                                         SOFT_RESET_E2 |
 227                                         SOFT_RESET_RB);
 228                 INREG(RBBM_SOFT_RESET);
 229                 OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset & (u32)
 230                                         ~(SOFT_RESET_CP |
 231                                           SOFT_RESET_HI |
 232                                           SOFT_RESET_SE |
 233                                           SOFT_RESET_RE |
 234                                           SOFT_RESET_PP |
 235                                           SOFT_RESET_E2 |
 236                                           SOFT_RESET_RB));
 237                 INREG(RBBM_SOFT_RESET);
 238         }
 239
 240         OUTREG(HOST_PATH_CNTL, host_path_cntl | HDP_SOFT_RESET);
 241         INREG(HOST_PATH_CNTL);
 242         OUTREG(HOST_PATH_CNTL, host_path_cntl);
 243
 244         if (rinfo->family != CHIP_FAMILY_R300 ||
 245             rinfo->family != CHIP_FAMILY_R350 ||
 246             rinfo->family != CHIP_FAMILY_RV350)
 247                 OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset);
 248
 249         OUTREG(CLOCK_CNTL_INDEX, clock_cntl_index);
 250         OUTPLL(MCLK_CNTL, mclk_cntl);
 251 }
 252
 253 void radeonfb_engine_init (struct radeonfb_info *rinfo)
 254 {
 255         unsigned long temp;
 256
 257         /* disable 3D engine */
 258         OUTREG(RB3D_CNTL, 0);
 259
 260         radeonfb_engine_reset(rinfo);
 261
 262         radeon_fifo_wait (1);
 263         if ((rinfo->family != CHIP_FAMILY_R300) &&
 264             (rinfo->family != CHIP_FAMILY_R350) &&
 265             (rinfo->family != CHIP_FAMILY_RV350))
 266                 OUTREG(RB2D_DSTCACHE_MODE, 0);
 267
 268         radeon_fifo_wait (3);
 269         /* We re-read MC_FB_LOCATION from card as it can have been
 270          * modified by XFree drivers (ouch !)
 271          */
 272         rinfo->fb_local_base = INREG(MC_FB_LOCATION) << 16;
 273
 274         OUTREG(DEFAULT_PITCH_OFFSET, (rinfo->pitch << 0x16) |
 275                                      (rinfo->fb_local_base >> 10));
 276         OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
 277         OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
 278
 279         radeon_fifo_wait (1);
 280 #if defined(__BIG_ENDIAN)
 281         OUTREGP(DP_DATATYPE, HOST_BIG_ENDIAN_EN, ~HOST_BIG_ENDIAN_EN);
 282 #else
 283         OUTREGP(DP_DATATYPE, 0, ~HOST_BIG_ENDIAN_EN);
 284 #endif
 285         radeon_fifo_wait (2);
 286         OUTREG(DEFAULT_SC_TOP_LEFT, 0);
 287         OUTREG(DEFAULT_SC_BOTTOM_RIGHT, (DEFAULT_SC_RIGHT_MAX |
 288                                          DEFAULT_SC_BOTTOM_MAX));
 289
 290         temp = radeon_get_dstbpp(rinfo->depth);
 291         rinfo->dp_gui_master_cntl = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
 292
 293         radeon_fifo_wait (1);
 294         OUTREG(DP_GUI_MASTER_CNTL, (rinfo->dp_gui_master_cntl |
 295                                     GMC_BRUSH_SOLID_COLOR |
 296                                     GMC_SRC_DATATYPE_COLOR));
 297
 298         radeon_fifo_wait (7);
 299
 300         /* clear line drawing regs */
 301         OUTREG(DST_LINE_START, 0);
 302         OUTREG(DST_LINE_END, 0);
 303
 304         /* set brush color regs */
 305         OUTREG(DP_BRUSH_FRGD_CLR, 0xffffffff);
 306         OUTREG(DP_BRUSH_BKGD_CLR, 0x00000000);
 307
 308         /* set source color regs */
 309         OUTREG(DP_SRC_FRGD_CLR, 0xffffffff);
 310         OUTREG(DP_SRC_BKGD_CLR, 0x00000000);
 311
 312         /* default write mask */
 313         OUTREG(DP_WRITE_MSK, 0xffffffff);
 314
 315         radeon_engine_idle ();
 316 }