How to make my new driver be configurable in the kernel
configuration file?
Yong Ma
mayong at mail.com
Wed Nov 16 09:56:47 PST 2005
----- Original Message -----
From: "John Baldwin" <jhb at freebsd.org>
To: freebsd-drivers at freebsd.org
Subject: Re: How to make my new driver be configurable in the kernel configuration file?
Date: Tue, 15 Nov 2005 10:21:59 -0500
>
> On Tuesday 15 November 2005 03:59 am, Yong Ma wrote:
> > Hi all,
> > I wrote and debuged my driver for a new device in KLD mode,now I want to
> > plug it into the kernel,so that it can be loaded when the system boots,and
> > make it be configurable in the kernel configuration file like other device
> > driver as "device XXX",I don't know what to do,could anyone be kind to help
> > me?
>
> To add your driver you update the src/sys/conf/files* files. If your driver
> is machine independent, you can add it to src/sys/conf/files. For example,
> here are the lines in sys/conf/files for the cy(4) driver:
>
> dev/cy/cy.c optional cy
> dev/cy/cy_isa.c optional cy isa
> dev/cy/cy_pci.c optional cy pci
>
> If your driver only works on a single architecture (such as i386) then add it
> to the architecture file sys/conf/files.<arch> (e.g. sys/conf/files.i386).
> The device names after 'optional' specify which devices must be enabled in
> the kernel config for that file to be included. Thus, in the example above,
> src/sys/dev/cy/cy.c is included as long as 'device cy' is in the kernel, but
> src/sys/dev/cy/cy_isa.c is only included if both 'device cy' and 'device isa'
> are in the kernel config file.
>
> --
> John Baldwin <jhb at FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
> "Power Users Use the Power to Serve" = http://www.FreeBSD.org
Thank you! I did as that but came across some problems,these are the jobs and the errors:
1) I copyed the files to the sys/dev/mydevice and added "dev/mydevice/mydevice.c optinonal mydevice" in the file /usr/src/sys/conf/files.i386,and added a line "device mydevice" in the sys/i386/conf/MYKERNEL(a copy of GENERIC),but met a error when config MYKERNEL:syntax error (the line I just added).
2) Then,I modified line in files.i386 as "dev/mydevice/mydevice.c standard",configed successfully,but another error occured when make depend(make buildkernel KERNCONF=MYKERNEL the same):
...
../../../dev/mydevice/mydevice.c:27:20: mydevice.h: No such file or directory
../../../dev/mydevice/mydevice.c:28:44: mydevicekern.h: No such file or directory
../../../dev/mydevice/mydevice.c:29:49: mydeviceioctl.h: No such file or directory
mkdep: compile failed
*** Error code 1
...
and the source code of mydevice.c is as follows:
...
#include "sjy22b.h"
#include "sjy22bkern.h"
#include "sjy22bioctl.h"
...
the three headers are just in the sys/dev/mydevice directory,I don't know why this happened.
Need your suggestion!
Thanks
Yong
--
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