pm3fb: fillrect acceleration

This is a port of accelerated fillrect function from the 2.4 kernel driver.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 238 insertions, 3 deletions

diff --git a/drivers/video/pm3fb.c b/drivers/video/pm3fb.c
index b52e883f0a52..a9b841c6f356 100644
--- a/drivers/video/pm3fb.c
+++ b/drivers/video/pm3fb.c
@@ -77,7 +77,7 @@ static struct fb_fix_screeninfo pm3fb_fix __devinitdata = {
         .xpanstep =     1,
         .ypanstep =     1,
         .ywrapstep =    0,
-        .accel =        FB_ACCEL_NONE,
+        .accel =        FB_ACCEL_3DLABS_PERMEDIA3,
 };
 
 /*
@@ -185,6 +185,238 @@ static inline int pm3fb_shift_bpp(unsigned bpp, int v)
         return 0;
 }
 
+/* acceleration */
+static int pm3fb_sync(struct fb_info *info)
+{
+        struct pm3_par *par = info->par;
+
+        PM3_WAIT(par, 2);
+        PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync);
+        PM3_WRITE_REG(par, PM3Sync, 0);
+        mb();
+        do {
+                while ((PM3_READ_REG(par, PM3OutFIFOWords)) == 0);
+                rmb();
+        } while ((PM3_READ_REG(par, PM3OutputFifo)) != PM3Sync_Tag);
+
+        return 0;
+}
+
+static void pm3fb_init_engine(struct fb_info *info)
+{
+        struct pm3_par *par = info->par;
+        const u32 width = (info->var.xres_virtual + 7) & ~7;
+
+        PM3_WAIT(par, 50);
+        PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync);
+        PM3_WRITE_REG(par, PM3StatisticMode, 0x0);
+        PM3_WRITE_REG(par, PM3DeltaMode, 0x0);
+        PM3_WRITE_REG(par, PM3RasterizerMode, 0x0);
+        PM3_WRITE_REG(par, PM3ScissorMode, 0x0);
+        PM3_WRITE_REG(par, PM3LineStippleMode, 0x0);
+        PM3_WRITE_REG(par, PM3AreaStippleMode, 0x0);
+        PM3_WRITE_REG(par, PM3GIDMode, 0x0);
+        PM3_WRITE_REG(par, PM3DepthMode, 0x0);
+        PM3_WRITE_REG(par, PM3StencilMode, 0x0);
+        PM3_WRITE_REG(par, PM3StencilData, 0x0);
+        PM3_WRITE_REG(par, PM3ColorDDAMode, 0x0);
+        PM3_WRITE_REG(par, PM3TextureCoordMode, 0x0);
+        PM3_WRITE_REG(par, PM3TextureIndexMode0, 0x0);
+        PM3_WRITE_REG(par, PM3TextureIndexMode1, 0x0);
+        PM3_WRITE_REG(par, PM3TextureReadMode, 0x0);
+        PM3_WRITE_REG(par, PM3LUTMode, 0x0);
+        PM3_WRITE_REG(par, PM3TextureFilterMode, 0x0);
+        PM3_WRITE_REG(par, PM3TextureCompositeMode, 0x0);
+        PM3_WRITE_REG(par, PM3TextureApplicationMode, 0x0);
+        PM3_WRITE_REG(par, PM3TextureCompositeColorMode1, 0x0);
+        PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode1, 0x0);
+        PM3_WRITE_REG(par, PM3TextureCompositeColorMode0, 0x0);
+        PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode0, 0x0);
+        PM3_WRITE_REG(par, PM3FogMode, 0x0);
+        PM3_WRITE_REG(par, PM3ChromaTestMode, 0x0);
+        PM3_WRITE_REG(par, PM3AlphaTestMode, 0x0);
+        PM3_WRITE_REG(par, PM3AntialiasMode, 0x0);
+        PM3_WRITE_REG(par, PM3YUVMode, 0x0);
+        PM3_WRITE_REG(par, PM3AlphaBlendColorMode, 0x0);
+        PM3_WRITE_REG(par, PM3AlphaBlendAlphaMode, 0x0);
+        PM3_WRITE_REG(par, PM3DitherMode, 0x0);
+        PM3_WRITE_REG(par, PM3LogicalOpMode, 0x0);
+        PM3_WRITE_REG(par, PM3RouterMode, 0x0);
+        PM3_WRITE_REG(par, PM3Window, 0x0);
+
+        PM3_WRITE_REG(par, PM3Config2D, 0x0);
+
+        PM3_WRITE_REG(par, PM3SpanColorMask, 0xffffffff);
+
+        PM3_WRITE_REG(par, PM3XBias, 0x0);
+        PM3_WRITE_REG(par, PM3YBias, 0x0);
+        PM3_WRITE_REG(par, PM3DeltaControl, 0x0);
+
+        PM3_WRITE_REG(par, PM3BitMaskPattern, 0xffffffff);
+
+        PM3_WRITE_REG(par, PM3FBDestReadEnables,
+                           PM3FBDestReadEnables_E(0xff) |
+                           PM3FBDestReadEnables_R(0xff) |
+                           PM3FBDestReadEnables_ReferenceAlpha(0xff));
+        PM3_WRITE_REG(par, PM3FBDestReadBufferAddr0, 0x0);
+        PM3_WRITE_REG(par, PM3FBDestReadBufferOffset0, 0x0);
+        PM3_WRITE_REG(par, PM3FBDestReadBufferWidth0,
+                           PM3FBDestReadBufferWidth_Width(width));
+
+        PM3_WRITE_REG(par, PM3FBDestReadMode,
+                           PM3FBDestReadMode_ReadEnable |
+                           PM3FBDestReadMode_Enable0);
+        PM3_WRITE_REG(par, PM3FBSourceReadBufferAddr, 0x0);
+        PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset, 0x0);
+        PM3_WRITE_REG(par, PM3FBSourceReadBufferWidth,
+                           PM3FBSourceReadBufferWidth_Width(width));
+        PM3_WRITE_REG(par, PM3FBSourceReadMode,
+                           PM3FBSourceReadMode_Blocking |
+                           PM3FBSourceReadMode_ReadEnable);
+
+        PM3_WAIT(par, 2);
+        {
+                unsigned long rm = 1;
+                switch (info->var.bits_per_pixel) {
+                case 8:
+                        PM3_WRITE_REG(par, PM3PixelSize,
+                                           PM3PixelSize_GLOBAL_8BIT);
+                        break;
+                case 16:
+                        PM3_WRITE_REG(par, PM3PixelSize,
+                                           PM3PixelSize_GLOBAL_16BIT);
+                        break;
+                case 32:
+                        PM3_WRITE_REG(par, PM3PixelSize,
+                                           PM3PixelSize_GLOBAL_32BIT);
+                        break;
+                default:
+                        DPRINTK(1, "Unsupported depth %d\n",
+                                info->var.bits_per_pixel);
+                        break;
+                }
+                PM3_WRITE_REG(par, PM3RasterizerMode, rm);
+        }
+
+        PM3_WAIT(par, 20);
+        PM3_WRITE_REG(par, PM3FBSoftwareWriteMask, 0xffffffff);
+        PM3_WRITE_REG(par, PM3FBHardwareWriteMask, 0xffffffff);
+        PM3_WRITE_REG(par, PM3FBWriteMode,
+                           PM3FBWriteMode_WriteEnable |
+                           PM3FBWriteMode_OpaqueSpan |
+                           PM3FBWriteMode_Enable0);
+        PM3_WRITE_REG(par, PM3FBWriteBufferAddr0, 0x0);
+        PM3_WRITE_REG(par, PM3FBWriteBufferOffset0, 0x0);
+        PM3_WRITE_REG(par, PM3FBWriteBufferWidth0,
+                           PM3FBWriteBufferWidth_Width(width));
+
+        PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 0x0);
+        {
+                /* size in lines of FB */
+                unsigned long sofb = info->screen_size /
+                        info->fix.line_length;
+                if (sofb > 4095)
+                        PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 4095);
+                else
+                        PM3_WRITE_REG(par, PM3SizeOfFramebuffer, sofb);
+
+                switch (info->var.bits_per_pixel) {
+                case 8:
+                        PM3_WRITE_REG(par, PM3DitherMode,
+                                           (1 << 10) | (2 << 3));
+                        break;
+                case 16:
+                        PM3_WRITE_REG(par, PM3DitherMode,
+                                           (1 << 10) | (1 << 3));
+                        break;
+                case 32:
+                        PM3_WRITE_REG(par, PM3DitherMode,
+                                           (1 << 10) | (0 << 3));
+                        break;
+                default:
+                        DPRINTK(1, "Unsupported depth %d\n",
+                                info->current_par->depth);
+                        break;
+                }
+        }
+
+        PM3_WRITE_REG(par, PM3dXDom, 0x0);
+        PM3_WRITE_REG(par, PM3dXSub, 0x0);
+        PM3_WRITE_REG(par, PM3dY, (1 << 16));
+        PM3_WRITE_REG(par, PM3StartXDom, 0x0);
+        PM3_WRITE_REG(par, PM3StartXSub, 0x0);
+        PM3_WRITE_REG(par, PM3StartY, 0x0);
+        PM3_WRITE_REG(par, PM3Count, 0x0);
+
+/* Disable LocalBuffer. better safe than sorry */
+        PM3_WRITE_REG(par, PM3LBDestReadMode, 0x0);
+        PM3_WRITE_REG(par, PM3LBDestReadEnables, 0x0);
+        PM3_WRITE_REG(par, PM3LBSourceReadMode, 0x0);
+        PM3_WRITE_REG(par, PM3LBWriteMode, 0x0);
+
+        pm3fb_sync(info);
+}
+
+static void pm3fb_fillrect (struct fb_info *info,
+                                const struct fb_fillrect *region)
+{
+        struct pm3_par *par = info->par;
+        struct fb_fillrect modded;
+        int vxres, vyres;
+        u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ?
+                ((u32*)info->pseudo_palette)[region->color] : region->color;
+
+        if (info->state != FBINFO_STATE_RUNNING)
+                return;
+        if ((info->flags & FBINFO_HWACCEL_DISABLED) ||
+                region->rop != ROP_COPY ) {
+                cfb_fillrect(info, region);
+                return;
+        }
+
+        vxres = info->var.xres_virtual;
+        vyres = info->var.yres_virtual;
+
+        memcpy(&modded, region, sizeof(struct fb_fillrect));
+
+        if(!modded.width || !modded.height ||
+           modded.dx >= vxres || modded.dy >= vyres)
+                return;
+
+        if(modded.dx + modded.width  > vxres)
+                modded.width  = vxres - modded.dx;
+        if(modded.dy + modded.height > vyres)
+                modded.height = vyres - modded.dy;
+
+        if(info->var.bits_per_pixel == 8)
+                color |= color << 8;
+        if(info->var.bits_per_pixel <= 16)
+                color |= color << 16;
+
+        PM3_WAIT(par, 4);
+
+        PM3_WRITE_REG(par, PM3Config2D,
+                                  PM3Config2D_UseConstantSource |
+                                  PM3Config2D_ForegroundROPEnable |
+                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
+                                  PM3Config2D_FBWriteEnable);
+
+        PM3_WRITE_REG(par, PM3ForegroundColor, color);
+
+        PM3_WRITE_REG(par, PM3RectanglePosition,
+                      (PM3RectanglePosition_XOffset(modded.dx)) |
+                      (PM3RectanglePosition_YOffset(modded.dy)));
+
+        PM3_WRITE_REG(par, PM3Render2D,
+                      PM3Render2D_XPositive |
+                      PM3Render2D_YPositive |
+                      PM3Render2D_Operation_Normal |
+                      PM3Render2D_SpanOperation |
+                      (PM3Render2D_Width(modded.width)) |
+                      (PM3Render2D_Height(modded.height)));
+}
+/* end of acceleration functions */
+
 /* write the mode to registers */
 static void pm3fb_write_mode(struct fb_info *info)
 {
@@ -528,6 +760,7 @@ static int pm3fb_set_par(struct fb_info *info)
         pm3fb_clear_colormap(par, 0, 0, 0);
         PM3_WRITE_DAC_REG(par, PM3RD_CursorMode,
                           PM3RD_CursorMode_CURSOR_DISABLE);
+        pm3fb_init_engine(info);
         pm3fb_write_mode(info);
         return 0;
 }
@@ -675,10 +908,11 @@ static struct fb_ops pm3fb_ops = {
         .fb_set_par     = pm3fb_set_par,
         .fb_setcolreg   = pm3fb_setcolreg,
         .fb_pan_display = pm3fb_pan_display,
-        .fb_fillrect    = cfb_fillrect,
+        .fb_fillrect    = pm3fb_fillrect,
         .fb_copyarea    = cfb_copyarea,
         .fb_imageblit   = cfb_imageblit,
         .fb_blank       = pm3fb_blank,
+        .fb_sync        = pm3fb_sync,
 };
 
 /* ------------------------------------------------------------------------- */
@@ -847,7 +1081,8 @@ static int __devinit pm3fb_probe(struct pci_dev *dev,
 
         info->fix = pm3fb_fix;
         info->pseudo_palette = par->palette;
-        info->flags = FBINFO_DEFAULT;/* | FBINFO_HWACCEL_YPAN;*/
+        info->flags = FBINFO_DEFAULT |
+                        FBINFO_HWACCEL_FILLRECT;/* | FBINFO_HWACCEL_YPAN;*/
 
         /*
          * This should give a reasonable default video mode. The following is