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Re: NFS and Network Driver Question

Subject: Re: NFS and Network Driver Question
From: Bob Wirka <bobwirka@xxxxxxxxxxxx>
Date: Tue, 19 Oct 2004 13:03:16 -0500
Cc: netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx
In-reply-to: <41704198.8000206@xxxxxxxxxxxx>
References: <41704198.8000206@xxxxxxxxxxxx>
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Please disregard my last post, I believe the problem is solved. Thanks again to all, especially Thomas Graf.

The essential things to learn from this exercise are:

1. A network driver compiled into the kernel must have an initialization function that allocates the 'net_device' structure and passes this to the kernel through the 'register_netdev()' call. You can reuse the module-version initialization function; rename it and prefix it's declaration with 'static __init'.

2. Add the 'module_init( init_fcn )' macro after the initialization function. This will cause the kernel to execute that code when booting.

Onward and upward.

Bob Wirka
Realtime Control Works

Bob Wirka wrote:

Hello,

I'm trying to build a kernel that mounts a NFS root file system. This is an embedded system; it uses an SMSC LAN91C111 network chip that is hardwired to I/O addres 0x300 and IRQ 5. I've been using the driver (as supplied by SMSC) as a module, and it works fine. Now I'm trying to incorporate it into the kernel build so that I can mount an NFS file system when the system boots.

I've added the source code to the kernel tree, and modified the Makefile(s) and Config.in files so that the driver <<appears>> to be compiled into the kernel. The kernel will load, but the chip is not initialized and the NFS fails.

Since I don't know how to pass the io address and irq number to the kernel, I've hard-coded them into the driver's init function (which I don't see being called).

If someone could point me in the right direction, I'd appreciate it.

Thank you,

Bob Wirka
Realtime Control Works




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