pm2fb: accelerated fillrect and copyarea

This is a port of accelerated functions from 2.4 kernel.  Only fillrect and
copyarea are accelerated.  Fillrect is not accelerated in 24-bit mode.

[adaplas]
Add appropriate flags

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>

diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index 5395419..5693da5 100644 (file)
--- a/drivers/video/pm2fb.c
+++ b/drivers/video/pm2fb.c
@@ -103,7 +103,7 @@ static struct fb_fix_screeninfo pm2fb_fix __devinitdata = {
        .xpanstep =     1,
        .ypanstep =     1,
        .ywrapstep =    0, 
-       .accel =        FB_ACCEL_NONE,
+       .accel =        FB_ACCEL_3DLABS_PERMEDIA2,
 };
 
 /*
@@ -206,6 +206,17 @@ static inline void WAIT_FIFO(struct pm2fb_par* p, u32 a)
 }
 #endif
 
+static void wait_pm2(struct pm2fb_par* par) {
+
+       WAIT_FIFO(par, 1);
+       pm2_WR(par, PM2R_SYNC, 0);
+       mb();
+       do {
+               while (pm2_RD(par, PM2R_OUT_FIFO_WORDS) == 0);
+               rmb();
+       } while (pm2_RD(par, PM2R_OUT_FIFO) != PM2TAG(PM2R_SYNC));
+}
+
 /*
  * partial products for the supported horizontal resolutions.
  */
@@ -1041,6 +1052,117 @@ static int pm2fb_blank(int blank_mode, struct fb_info *info)
        return 0;
 }
 
+/*
+ * block operation. copy=0: rectangle fill, copy=1: rectangle copy.
+ */
+static void pm2fb_block_op(struct pm2fb_par* par, int copy,
+                               s32 xsrc, s32 ysrc,
+                               s32 x, s32 y, s32 w, s32 h,
+                               u32 color) {
+
+       if (!w || !h)
+               return;
+       WAIT_FIFO(par, 6);
+       pm2_WR(par, PM2R_CONFIG, PM2F_CONFIG_FB_WRITE_ENABLE |
+               PM2F_CONFIG_FB_READ_SOURCE_ENABLE);
+       pm2_WR(par, PM2R_FB_PIXEL_OFFSET, 0);
+       if (copy)
+               pm2_WR(par, PM2R_FB_SOURCE_DELTA,
+                       ((ysrc-y) & 0xfff) << 16 | ((xsrc-x) & 0xfff));
+       else
+               pm2_WR(par, PM2R_FB_BLOCK_COLOR, color);
+       pm2_WR(par, PM2R_RECTANGLE_ORIGIN, (y << 16) | x);
+       pm2_WR(par, PM2R_RECTANGLE_SIZE, (h << 16) | w);
+       wmb();
+       pm2_WR(par, PM2R_RENDER,PM2F_RENDER_RECTANGLE |
+                               (x<xsrc ? PM2F_INCREASE_X : 0) |
+                               (y<ysrc ? PM2F_INCREASE_Y : 0) |
+                               (copy ? 0 : PM2F_RENDER_FASTFILL));
+       wait_pm2(par);
+}
+
+static void pm2fb_fillrect (struct fb_info *info,
+                               const struct fb_fillrect *region)
+{
+       struct pm2fb_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;
+
+       if(info->var.bits_per_pixel != 24)
+               pm2fb_block_op(par, 0, 0, 0,
+                               modded.dx, modded.dy,
+                               modded.width, modded.height, color);
+       else
+               cfb_fillrect(info, region);
+}
+
+static void pm2fb_copyarea(struct fb_info *info,
+                               const struct fb_copyarea *area)
+{
+       struct pm2fb_par *par = info->par;
+       struct fb_copyarea modded;
+       u32 vxres, vyres;
+
+       if (info->state != FBINFO_STATE_RUNNING)
+               return;
+       if (info->flags & FBINFO_HWACCEL_DISABLED) {
+               cfb_copyarea(info, area);
+               return;
+       }
+
+       memcpy(&modded, area, sizeof(struct fb_copyarea));
+
+       vxres = info->var.xres_virtual;
+       vyres = info->var.yres_virtual;
+
+       if(!modded.width || !modded.height ||
+          modded.sx >= vxres || modded.sy >= vyres ||
+          modded.dx >= vxres || modded.dy >= vyres)
+               return;
+
+       if(modded.sx + modded.width > vxres)
+               modded.width = vxres - modded.sx;
+       if(modded.dx + modded.width > vxres)
+               modded.width = vxres - modded.dx;
+       if(modded.sy + modded.height > vyres)
+               modded.height = vyres - modded.sy;
+       if(modded.dy + modded.height > vyres)
+               modded.height = vyres - modded.dy;
+
+       pm2fb_block_op(par, 1, modded.sx, modded.sy,
+                       modded.dx, modded.dy,
+                       modded.width, modded.height, 0);
+}
+
 /* ------------ Hardware Independent Functions ------------ */
 
 /*
@@ -1054,8 +1176,8 @@ static struct fb_ops pm2fb_ops = {
        .fb_setcolreg   = pm2fb_setcolreg,
        .fb_blank       = pm2fb_blank,
        .fb_pan_display = pm2fb_pan_display,
-       .fb_fillrect    = cfb_fillrect,
-       .fb_copyarea    = cfb_copyarea,
+       .fb_fillrect    = pm2fb_fillrect,
+       .fb_copyarea    = pm2fb_copyarea,
        .fb_imageblit   = cfb_imageblit,
 };
 
@@ -1204,7 +1326,9 @@ static int __devinit pm2fb_probe(struct pci_dev *pdev,
        info->fix               = pm2fb_fix;    
        info->pseudo_palette    = default_par->palette;
        info->flags             = FBINFO_DEFAULT |
-                                  FBINFO_HWACCEL_YPAN;
+                                  FBINFO_HWACCEL_YPAN |
+                                 FBINFO_HWACCEL_COPYAREA |
+                                 FBINFO_HWACCEL_FILLRECT;
 
        if (!mode)
                mode = "640x480@60";