提交 cb908ed3 编写于 作者: A Alex Ivanov 提交者: Helge Deller

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: NAlex Ivanov <lausgans@gmail.com>
Signed-off-by: NHelge Deller <deller@gmx.de>
上级 c4b5fd3f
......@@ -121,6 +121,7 @@ static int __initdata stifb_bpp_pref[MAX_STI_ROMS];
#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 @@ static int __initdata stifb_bpp_pref[MAX_STI_ROMS];
#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 @@ ARTIST_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
#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 @@ stifb_blank(int blank_mode, struct fb_info *info)
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 @@ static struct fb_ops stifb_ops = {
.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 @@ static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref)
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 !!! */
......
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