stifb: Implement hardware accelerated copyarea
This patch adds hardware assisted scrolling. The code is based upon the
following investigation: https://parisc.wiki.kernel.org/index.php/NGLE#Blitter
A simple 'time ls -la /usr/bin' test shows 1.6x speed increase over soft
copy and 2.3x increase over FBINFO_READS_FAST (prefer soft copy over
screen redraw) on Artist framebuffer.
Signed-off-by: Alex Ivanov <lausgans@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/drivers/video/fbdev/stifb.c b/drivers/video/fbdev/stifb.c
index 86621fa..735355b 100644
--- a/drivers/video/fbdev/stifb.c
+++ b/drivers/video/fbdev/stifb.c
@@ -121,6 +121,7 @@
#define REG_3 0x0004a0
#define REG_4 0x000600
#define REG_6 0x000800
+#define REG_7 0x000804
#define REG_8 0x000820
#define REG_9 0x000a04
#define REG_10 0x018000
@@ -135,6 +136,8 @@
#define REG_21 0x200218
#define REG_22 0x0005a0
#define REG_23 0x0005c0
+#define REG_24 0x000808
+#define REG_25 0x000b00
#define REG_26 0x200118
#define REG_27 0x200308
#define REG_32 0x21003c
@@ -429,6 +432,9 @@
#define SET_LENXY_START_RECFILL(fb, lenxy) \
WRITE_WORD(lenxy, fb, REG_9)
+#define SETUP_COPYAREA(fb) \
+ WRITE_BYTE(0, fb, REG_16b1)
+
static void
HYPER_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
{
@@ -1004,6 +1010,36 @@
return 0;
}
+static void
+stifb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+ struct stifb_info *fb = container_of(info, struct stifb_info, info);
+
+ SETUP_COPYAREA(fb);
+
+ SETUP_HW(fb);
+ if (fb->info.var.bits_per_pixel == 32) {
+ WRITE_WORD(0xBBA0A000, fb, REG_10);
+
+ NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xffffffff);
+ } else {
+ WRITE_WORD(fb->id == S9000_ID_HCRX ? 0x13a02000 : 0x13a01000, fb, REG_10);
+
+ NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xff);
+ }
+
+ NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
+ IBOvals(RopSrc, MaskAddrOffset(0),
+ BitmapExtent08, StaticReg(1),
+ DataDynamic, MaskOtc, BGx(0), FGx(0)));
+
+ WRITE_WORD(((area->sx << 16) | area->sy), fb, REG_24);
+ WRITE_WORD(((area->width << 16) | area->height), fb, REG_7);
+ WRITE_WORD(((area->dx << 16) | area->dy), fb, REG_25);
+
+ SETUP_FB(fb);
+}
+
static void __init
stifb_init_display(struct stifb_info *fb)
{
@@ -1069,7 +1105,7 @@
.fb_setcolreg = stifb_setcolreg,
.fb_blank = stifb_blank,
.fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
+ .fb_copyarea = stifb_copyarea,
.fb_imageblit = cfb_imageblit,
};
@@ -1258,7 +1294,7 @@
info->fbops = &stifb_ops;
info->screen_base = ioremap_nocache(REGION_BASE(fb,1), fix->smem_len);
info->screen_size = fix->smem_len;
- info->flags = FBINFO_DEFAULT;
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA;
info->pseudo_palette = &fb->pseudo_palette;
/* This has to be done !!! */