Xilinx_ai_sdk 2.0.5 open(/dev/dpcma) failed

[baharlab]

Hi,

 I used a petalinux to build a custom design from zcu102 bsp (zcu102-dpu-trd-2019-1-190809.zip). I want to use xilinx_ai_sdk for my program. But when I run the program, it shows open(/dev/dpcma) failed. I'm wondering how to solve this problem.

[y_takasugi]

Is this not helpful?

You can try install the dpcma.ko manually on your target side.

https://forums.xilinx.com/t5/Deephi-DNNDK/AI-SDK-can-t-run-sample-because-dnndk-version-is-3-0/m-p/1022788

[baharlab]

I got the following error when try to insert dpcma.ko

root@zcu102-dpu-trd-2019:~# insmod dpcma.ko
insmod: can't insert 'dpcma.ko': invalid module format

My concern is the kernel image on board is 4.19.0+ while the dpcma.ko provided is in 4.19.

[y_takasugi]

I was able to execute the insmod command successfully.

------

root@ultra96:/media/card/xilinx_ai_sdk/samples/classification# lsmod
Tainted: G
dpcma 16384 0 - Live 0xffffff8000d49000 (O)
dpu 45056 0 - Live 0xffffff8000d38000 (O)
mali 303104 0 - Live 0xffffff8000cd8000 (O)
uio_pdrv_genirq 16384 0 - Live 0xffffff8000cb0000
root@ultra96:/media/card/xilinx_ai_sdk/samples/classification# uname -r
4.19.0-xilinx-v2019.1
------

I built a image with kernel 4.19.0 which is created by petalinux 2019.1 default.

Are you not using the default kernel? or Are you changing the kernel version with recipes-kernel?

[baharlab]

Hi,

I am using petalinux 2019.1 as well, while my linux kernel is 4.19.0+ shown as follows:

root@zcu102-dpu-trd-2019:/lib/modules/4.19.0-xilinx-v2019.1/extra# uname -sr
Linux 4.19.0+

I didn't modify my recipe-kernel while my .bbapend file shows

"LINUX_VERSION_EXTENSION = "+"

SRC_URI += "file://user_2019-10-09-16-32-00.cfg"

FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"

"

How can I compile my petalinux kernel with 4.19.0

[baharlab]

An update: I modified to .bbapend file so that my LINUX_KERNEL_EXTENSION=-xilinx-v2019,1. However, it gives me a different error when I insmod dpcma.ko

[ 158.013586] dpcma: Unknown symbol kmem_cache_alloc_trace (err -2)
[ 158.019695] dpcma: Unknown symbol _mcount (err -2)

insmod: can't insert 'dpcma.ko': unknown symbol in module, or unknown parameter

[y_takasugi]

You try to enable kernel traces function.

In Petalinux2019.1

petalinux-config  -c kernel

Kernel hacking -> Tracers 

-> Kernel Function Tracer

-> Kernel Function Graph Tracer

-> Scheduling Latency Tracer

I think your insmod error will be disappeared.

However , I can't execute AI SDK example..

F1011 07:55:57.536851 2618 buffer_object_fd.cpp:97] Check failed: fd > 0 (-1 vs. 0) , open(/dev/dpcma) failed.
*** Check failure stack trace: ***
Aborted

It would be difficult for me if there is no original build environment.

[duclong]

Hi all,

Please contact your local FAE. And ask them Xilinx AI BSP for ZCU102/ZCU104/Ultra96 board images with DNNDK v3.1.

Regards,

Long.

[gguasti]

A correct approach is to compile the source code of dpcma with the correct petalinux release.

1) download the source file and the readme file from this post
2) create a BSP - you might for example follow PG388, starting from page 51:

% cd $TRD_HOME/apu/dpu_petalinux_bsp
% petalinux-create -t project -s xilinx-dpu-trd-zcu102-v2019.1.bsp
% cd zcu102-dpu-trd-2019-1
% petalinux-config ––get-hw-description=$TRD_HOME/pl/pre-built --silentconfig

3) Unzip the dpcma.tar.gz to the “recipes-xxx” directory, such as
% cp dpcma.tar.gz <BSP_Path>/project-spec/meta-user/recipes-apps
% tar xzvf dpcma.tar.gz

4) update the devicetree:
add the following information to the device-tree in $TRD_HOME/apu/dpu_petalinux_bsp/zcu102-dpu-trd-2019-1/project-spec/meta-user/recipes-bsp/device-tree/files/system-user.dtsi
/ {
   dpcma {
         compatible = "deephi,cma";
   };
};

5) run a new petalinux-build

[y_takasugi]

By using dpcma.tar.gz ,  I have been able to execute AI SDK model . (test_jpeg_classification_resnet_18)

>>% cp dpcma.tar.gz <BSP_Path>/project-spec/meta-user/recipes-apps

By the way, I copied dpcma recipes to recipes-module folder instead of recipes-apps folder.

[machuanzhao1130@163.com]

Hi，

I copied dpcma folder to recipes-module folder，executive command：

petalinux-build -c dpcma

[INFO] building dpcma
[INFO] sourcing bitbake
[INFO] generating user layers
INFO: bitbake dpcma
Loading cache: 100% |################################################################################| Time: 0:00:00
Loaded 3816 entries from dependency cache.
Parsing recipes: 100% |##############################################################################| Time: 0:00:02
Parsing of 2781 .bb files complete (2779 cached, 2 parsed). 3816 targets, 150 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies
Initialising tasks: 100% |###########################################################################| Time: 0:00:04
Checking sstate mirror object availability: 100% |###################################################| Time: 0:00:14
Sstate summary: Wanted 329 Found 102 Missed 454 Current 1794 (31% match, 89% complete)
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
ERROR: dpcma-1.0-r0 do_compile: oe_runmake failed
ERROR: dpcma-1.0-r0 do_compile: Function failed: do_compile (log file is located at /home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0/temp/log.do_compile.24729)
ERROR: Logfile of failure stored in: /home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0/temp/log.do_compile.24729
Log data follows:
| DEBUG: Executing shell function do_compile
| NOTE: make -j 8 KERNEL_src=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-source KERNEL_PATH=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-source KERNEL_VERSION=4.19.0+ CC=aarch64-xilinx-linux-gcc -fuse-ld=bfd -fdebug-prefix-map=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0=/usr/src/debug/dpcma/1.0-r0 -fdebug-prefix-map=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0/recipe-sysroot= -fdebug-prefix-map=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0/recipe-sysroot-native= -fdebug-prefix-map=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-source=/usr/src/kernel LD=aarch64-xilinx-linux-ld.bfd AR=aarch64-xilinx-linux-ar O=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-build-artifacts KBUILD_EXTRA_SYMBOLS=
| make -C /home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-source M=/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0
| make[1]: Entering directory '/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-source'
| make[2]: Entering directory '/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-build-artifacts'
|
| ERROR: Kernel configuration is invalid.
| include/generated/autoconf.h or include/config/auto.conf are missing.
| Run 'make oldconfig && make prepare' on kernel src to fix it.
|
| make[2]: *** [/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-source/Makefile:643: include/config/auto.conf] Error 1
| make[2]: Leaving directory '/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-build-artifacts'
| make[1]: *** [Makefile:146: sub-make] Error 2
| make[1]: Leaving directory '/home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work-shared/zcu104-zynqmp/kernel-source'
| make: *** [Makefile:6: all] Error 2
| ERROR: oe_runmake failed
| WARNING: /home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0/temp/run.do_compile.24729:1 exit 1 from 'exit 1'
| ERROR: Function failed: do_compile (log file is located at /home/yangar/work/petalinux/zcu104_102trdbsp/build/tmp/work/zcu104_zynqmp-xilinx-linux/dpcma/1.0-r0/temp/log.do_compile.24729)
ERROR: Task (/home/yangar/work/petalinux/zcu104_102trdbsp/project-spec/meta-user/recipes-modules/dpcma/dpcma.bb:do_compile) failed with exit code '1'
NOTE: Tasks Summary: Attempted 5570 tasks of which 5569 didn't need to be rerun and 1 failed.

Summary: 1 task failed:
/home/yangar/work/petalinux/zcu104_102trdbsp/project-spec/meta-user/recipes-modules/dpcma/dpcma.bb:do_compile
Summary: There were 2 ERROR messages shown, returning a non-zero exit code.
ERROR: Failed to build dpcma

Have you ever seen this mistake before？can you tell me why? thanks!

[y_takasugi]

>>include/generated/autoconf.h or include/config/auto.conf are missing.

The file seems to be missing from the message.
If you clean the environment, it may succeed, so can you try it once?

https://forums.xilinx.com/t5/Embedded-Linux/petalinux2019-1-Kernel-configuration-is-invalid/td-p/1029931

[machuanzhao1130@163.com]

In your way, I have solved the problem，thanks！