hplibmod.ko can not be insmoded to kernel

Kevin Cai

Prodigy 50 points

Hi,

I get kernel from MCSDK: mcsdk_linux_3_00_03_15;

In the kernel I find module: /lib/modules/3.10.10/extra/hplibmod.ko,

I need to insmod hplibmod.ko to kernel, but find following error:

hplibmod: disagrees about version of symbol module_layout

Error: could not insert module hplibmod.ko: Invalid module format

I understand the module is compiled with same version as kernel (since there are in the same SDK packet), why there is version verification error? How can I insmod hplibmod.ko without re-comliling module and kernel?

I get module and kernel information:

root@keystone-evm:/lib/modules/3.10.10/extra# modinfo hplibmod.ko
filename:       /lib/modules/3.10.10/extra/hplibmod.ko
license:        GPL v2
description:    TI HPLIB kernel module.
author:         Texas Instruments Incorporated
depends:
vermagic:       3.10.10 SMP mod_unload modversions ARMv7 rt-patch
parm:           memSize:Size of DMA coherent memory to be allocated (uint)

root@keystone-evm:/lib/modules/3.10.10/extra# uname -r
3.10.10

I try modprobe -f hplibmod.ko, it does not work either.

Thank you very much!

over 9 years ago

0 Raja over 9 years ago

TI__Guru* 81335 points

Hi Kevin,

Welcome to the TI E2E forum. I hope you will find many good answers here and in the TI.com documents and in the TI Wiki Pages (for processor issues). Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics (e2e.ti.com).

As per below TI wiki, you need to re-build the kernel with CONTINGUOUS, CACHEABLE DMA-COHERENCY ENABLED.

http://processors.wiki.ti.com/index.php/TransportNetLib_UsersGuide#Building_HPLIB_Kernel_Module

Note: Also we recommend you to use the latest MCSDK released.

Thank you.

0 Kevin Cai over 9 years ago in reply to Raja

Prodigy 50 points

Rajasekaran K said:

Hi Kevin,

Welcome to the TI E2E forum. I hope you will find many good answers here and in the TI.com documents and in the TI Wiki Pages (for processor issues). Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics (e2e.ti.com).

As per below TI wiki, you need to re-build the kernel with CONTINGUOUS, CACHEABLE DMA-COHERENCY ENABLED.

http://processors.wiki.ti.com/index.php/TransportNetLib_UsersGuide#Building_HPLIB_Kernel_Module

Note: Also we recommend you to use the latest MCSDK released.

Thank you.

Hi, Rajasekaran K

Thank you very much for the answer.

From customer point of view, they prefer that kernel and module can be used directly (No re-compile needed)

They do not want to download the big kernel packet very time version update.

Would it be possible that we ensure same version used in kernel and module when release MCSDK

This reduce customer's effort.

Thank you very much!

0 Pubesh over 9 years ago in reply to Kevin Cai

TI__Mastermind 20790 points

Hi,

Follow the below steps to insert the hplib,

Go to <transport-net-lib-install-dir>/ packages/ti/runtime/hplib/module
Check the hplibmod.ko
Copy this to the root file system
Make sure that this is insmoded after boot

0 Pubesh over 9 years ago in reply to Kevin Cai

TI__Mastermind 20790 points

Kevin,

However this discussion of thread can helpful for future readers, If you verified this thread.

0 Kevin Cai over 9 years ago in reply to Pubesh

Prodigy 50 points

Hi, Pubesh

I checked <transport-net-lib-install-dir>/ packages/ti/runtime/hplib/module but do not find hplibmod.ko

I checked both Windows and Linux version of MCSDK.

Do I need to re-compile the transport-net-lib to generate hplibmod.ko?

Is it possible that when MCSDK released, hplibmod.ko is provided?

Thank you very much!

0 Pubesh over 9 years ago in reply to Kevin Cai

TI__Mastermind 20790 points

Kevin,

Check the MCSDK install path and get the hplib module, this module requires to build and get the hplibmod.ko

C:\ti\MCSDK_3_00_03_15\transport_net_lib_1_0_0_10\packages\ti\runtime\hplib\module

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hplibmod.ko can not be insmoded to kernel