ssvb

======= Intel Atom N450 ==========

atom ~ # perf stat dd if=/dev/sdb of=/dev/null bs=1M
7839+1 records in
7839+1 records out
8220834816 bytes (8.2 GB) copied, 411.443 s, 20.0 MB/s

 Performance counter stats for 'dd if=/dev/sdb of=/dev/null bs=1M':

      35503.879851 task-clock                #    0.086 CPUs utilized          

ssvb

In the kernel:

diff --git a/drivers/char/sun4i_g2d/g2d_driver.c b/drivers/char/sun4i_g2d/g2d_driver.c
index be4efe2..33c43ba 100644
--- a/drivers/char/sun4i_g2d/g2d_driver.c
+++ b/drivers/char/sun4i_g2d/g2d_driver.c
@@ -317,15 +317,11 @@ int g2d_mmap(struct file *file, struct vm_area_struct * vma)
        unsigned long mypfn;
        unsigned long vmsize = vma->vm_end-vma->vm_start;
 

ssvb

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
                 Starting Crush
                 Version: TestU01 1.2.3
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


***********************************************************
Test smarsa_SerialOver calling smultin_MultinomialOver

***********************************************************

ssvb

Section "Device"
        Identifier      "Allwinner A10/A13 FBDEV 1"
        Driver          "sunxifb"
        Option          "fbdev" "/dev/fb0"
EndSection

Section "Screen"
        Identifier      "Sunxi Screen"
        Device          "Allwinner A10/A13 FBDEV 1"
        DefaultDepth    16

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#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <assert.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <sys/ioctl.h>
#include <linux/fb.h>

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#!/bin/sh

make ARCH=arm CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- mrproper
make ARCH=arm CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- sun4i_defconfig
make ARCH=arm CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- menuconfig
make ARCH=arm CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- -j8 uImage || exit 1
make ARCH=arm CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- -j8 modules || exit 1
make ARCH=arm CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- modules_install INSTALL_MOD_PATH=/mnt/arm-nfs-root
scp arch/arm/boot/uImage root@sun4i:/mnt/mmcblk0p1/uImage
../sunxi-tools/fex2bin mele_a1000.fex script.bin

ssvb

The trace of DRI2 communication:

MaliDRI2CreateBuffer attachment=1 buffer=0xc09250, offs=0, name=83
MaliDRI2CreateBuffer attachment=0 buffer=0xc09290, offs=150, name=84
MaliDRI2ScheduleSwap (front->attachment=0,front->name=84) (back->attachment=1,back->name=83) 0xc09290 0xc09250
MaliDRI2CreateBuffer attachment=1 buffer=0xd130f8, offs=300, name=85
MaliDRI2CreateBuffer attachment=0 buffer=0xd06200, offs=450, name=86
MaliDRI2DestroyBuffer attachment=1 buffer=0xc09250
MaliDRI2DestroyBuffer attachment=0 buffer=0xc09290
MaliDRI2ScheduleSwap (front->attachment=0,front->name=86) (back->attachment=1,back->name=85) 0xd06200 0xd130f8

ssvb

diff --git a/arch/arm/mach-sun4i/devices.c b/arch/arm/mach-sun4i/devices.c
index ff56e9a..e4425f8 100644
--- a/arch/arm/mach-sun4i/devices.c
+++ b/arch/arm/mach-sun4i/devices.c
@@ -35,6 +35,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
 #include <asm/setup.h>
+#include <asm/pmu.h>
 #include <mach/hardware.h>

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[product]
version = "1.0"
machine = "A10-EVB-V1.1"

[target]
boot_clock = 1008
dcdc2_vol = 1400
dcdc3_vol = 1250
ldo2_vol = 3000
ldo3_vol = 2800

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sun4i ~ # cat /etc/X11/xorg.conf
Section "Device"
    Identifier "FBDEV"
    Driver "fbdev"
    Option "fbdev" "/dev/fb0"
#    Option "ShadowFB" "false"
EndSection

Section "ServerFlags"
    Option "BlankTime" "0"