[Xenomai-help] Xenomai install problem?

[Xenomai-help] Xenomai install problem?

[Steve Shumway]

Hello;

I'm trying to write a RTDM driver, and I can't seem to get it to 
compile. I suspect that it has something to do with my installation of 
Xenomai, or the kernel patch. Here's what the offending code looks like:

---------------
/*!
  *  @file irqcontrol_driver.c
  *
  *  @brief RTDM IRQ Control Driver
  *  @version 0.1
  *
  *
  *
  *
  *
  *
  *
  *  FPGA Interrupt 7 Control
  *
  *  I/O Address: 0x32D
  *
  *  Bit 3:  Digital Input 7 Interrupt Enable     Read/Write
  *  Bit 2:  Timing Input Interrupt Enable        Read/Write
  *  Bit 1:  Interrupt caused by digital Input 7  Read Only
  *  Bit 0:  Interrupt caused by timing input     Read Only
  */

//#define	DEBUG_IRQCONTROL_DRVR	1

#include <linux/kernel.h>
#include <rtdm/rtdm_driver.h>

#include "xchan_fpga.h"


#define	IRQ7CTL_SUB_CLASS	4711

---------------

There is obviously more to the driver. I will gladly post more of it 
should anyone request, it looks to me like posting more of it would be a 
waste of time though. The problem looks to be with the "#include 
<rtdm/rtdm_driver.h>" line. This is line 26 in the source file that the 
compiler is complaining about.

The error message from the compile step is:

gcc -O2 -Wall -DMODULE -D__KERNEL__ -DLINUX -I/usr/src/linux/include 
-I/usr/src/linux/include/xenomai/compat -I/usr/xenomai/include   -c -o 
irqcontrol_driver.o irqcontrol_driver.c
In file included from /usr/src/linux/include/linux/prefetch.h:14,
                  from /usr/src/linux/include/linux/list.h:8,
                  from /usr/xenomai/include/rtdm/rtdm_driver.h:35,
                  from irqcontrol_driver.c:26:
/usr/src/linux/include/asm/processor.h:102: error: 
'CONFIG_X86_L1_CACHE_SHIFT' undeclared here (not in a function)
/usr/src/linux/include/asm/processor.h:102: error: requested alignment 
is not a constant
/usr/src/linux/include/asm/processor.h: In function 'load_cr3':
/usr/src/linux/include/asm/processor.h:162: error: 
'CONFIG_PAGE_OFFSETUL' undeclared (first use in this function)
/usr/src/linux/include/asm/processor.h:162: error: (Each undeclared 
identifier is reported only once
/usr/src/linux/include/asm/processor.h:162: error: for each function it 
appears in.)
/usr/src/linux/include/asm/processor.h: At top level:
/usr/src/linux/include/asm/processor.h:201: error: requested alignment 
is not a constant
In file included from /usr/src/linux/include/asm/thread_info.h:4,
                  from /usr/src/linux/include/linux/thread_info.h:35,
                  from /usr/src/linux/include/linux/preempt.h:9,
                  from /usr/src/linux/include/linux/spinlock.h:49,
                  from /usr/src/linux/include/linux/seqlock.h:29,
                  from /usr/src/linux/include/linux/time.h:8,
                  from /usr/src/linux/include/linux/timex.h:57,
                  from /usr/src/linux/include/linux/sched.h:54,
                  from /usr/src/linux/include/linux/ptrace.h:80,
                  from /usr/src/linux/include/asm/xenomai/system_32.h:28,
                  from /usr/src/linux/include/asm/xenomai/system.h:2,
                  from /usr/xenomai/include/nucleus/types.h:39,
                  from /usr/xenomai/include/nucleus/stat.h:24,
                  from /usr/xenomai/include/nucleus/thread.h:130,
                  from /usr/xenomai/include/nucleus/pod.h:34,
                  from /usr/xenomai/include/nucleus/xenomai.h:23,
                  from /usr/xenomai/include/rtdm/rtdm_driver.h:37,
                  from irqcontrol_driver.c:26:
/usr/src/linux/include/asm/thread_info_64.h: In function 
'current_thread_info':
/usr/src/linux/include/asm/thread_info_64.h:66: error: 'THREAD_SIZE' 
undeclared (first use in this function)
/usr/src/linux/include/asm/thread_info_64.h: In function 
'stack_thread_info':
/usr/src/linux/include/asm/thread_info_64.h:74: error: 'THREAD_SIZE' 
undeclared (first use in this function)
In file included from /usr/src/linux/include/linux/preempt.h:9,

---------------

There's a bunch more to the error listing.

I've done a search of the /usr/source tree, and I can't find any 
definition of the macro: "CONFIG_X86_L1_CACHE_SHIFT". In fact all of the 
other errors in the compiler output are complaints about missing CONFIG_ 
symbols.

I know from my investigations that the kernel source tree does some 
unusual stuff for the "autoconf.h" file which comes out of the "make 
menuconfig" installation step. I just don't seem to be able to convince 
the installation process to give me a properly constructed set of header 
files.


The steps I used to install Xenomai are:


tar -xvzpf linux-2.6.25 tar -C /usr/src

tar -xvjpf xenomai-2.4.4.tar.bz2 -C /usr/src

cd /usr/src/xenomai-2.4.4

./scripts/prepare-kernel.sh \
--linux=/usr/src/linux-2.6.25 \
--arch=i686 \
--adeos=/usr/src/xenomai-2.4.4/ksrc/arch/x86/patches/adeos-ipipe-2.6.25-x86-2.0-08.patch

cd /usr/src/linux-2.6.25

make menuconfig

make bzImage modules

mkdir -p /usr/src/xeno-linux

cd /usr/src/xeno-linux

/usr/src/xenomai-2.4.4/configure

make install

---------------

The above procedure seems to complete without any complaints. I'm out of 
ideas as to what I'm doing wrong. It seems like it must be something 
simple, but I just don't see what that simple thing is.

Thanks in advance for any help you can provide.

Regards

Steve Shumway

Re: [Xenomai-help] Xenomai install problem?

[Gilles Chanteperdrix]

Steve Shumway wrote:
> gcc -O2 -Wall -DMODULE -D__KERNEL__ -DLINUX -I/usr/src/linux/include 
> -I/usr/src/linux/include/xenomai/compat -I/usr/xenomai/include   -c -o 
> irqcontrol_driver.o irqcontrol_driver.c

So, the compiler looks for headers in /usr/src/linux.

> tar -xvzpf linux-2.6.25 tar -C /usr/src

And you installed the kernel sources in /usr/src/linux-2.6.25

And by the way, are you trying to compile a module with gcc by hand ?
If, yes, then it is normal that you get problems. The official way to
compile modules with the 2.6 kernel is to use the way described in
/usr/src/linux-2.6.25/Documentation/kbuild/modules.txt

-- 
					    Gilles.

Re: [Xenomai-help] Xenomai install problem?

[Steve Shumway]

The problem was my lack of understanding about how to build a module. 
The installation of linux+xenomai was ok.

Thanks

Steve


Gilles Chanteperdrix wrote:
> Steve Shumway wrote:
>> gcc -O2 -Wall -DMODULE -D__KERNEL__ -DLINUX -I/usr/src/linux/include 
>> -I/usr/src/linux/include/xenomai/compat -I/usr/xenomai/include   -c -o 
>> irqcontrol_driver.o irqcontrol_driver.c
> 
> So, the compiler looks for headers in /usr/src/linux.
> 
>> tar -xvzpf linux-2.6.25 tar -C /usr/src
> 
> And you installed the kernel sources in /usr/src/linux-2.6.25
> 
> And by the way, are you trying to compile a module with gcc by hand ?
> If, yes, then it is normal that you get problems. The official way to
> compile modules with the 2.6 kernel is to use the way described in
> /usr/src/linux-2.6.25/Documentation/kbuild/modules.txt
>