Sangwoo Shim wrote:
2005/10/12, Scott Long <[EMAIL PROTECTED]>:
Pete wrote:
Hello,
I have what may seem to be a silly question, but I cannot find any
other decent resources on the web. >.< The problem that I am having
right now is
that I have a fairly nice graphics card which, for the moment is only
supported on Windows Operating systems, and old 2.4 Linux kernels. So
far there has
not been much positive outlook in porting the drivers to *BSD or any of
the 2.6 kernels that I know of, let alone 64-bit drivers for non-Win OSes.
So I guess that makes my question fairly simple then; I know that driver
code is written in C (which I am learning currently) but thats about all
I know. I'm probably
not far off when I say that I need more to go on. Yet, from looking at
Amazon.com I have not been able to find any books on writing driver
code, which is really
frustrating.
One of my security related books, Rootkits, tells me about how to write
drivers for a completely different reason so I know a bit more about how
they work but again
the code involved does not interface hardware to the OS, just injects a
custom application. The other tool that I will probably use is Jungo,
which is a nice-looking
application which automates a skeletal version of the driver you need,
but again, I would not know how to fill it out.
Any help is appreciated.
-Pete
There are indeed no books that I know of on the subject of writing
drivers for any *BSD, let alone FreeBSD.
[snip]
For me, following book was quite helpful:
Embedded FreeBSD cookbook, by Paul Cevoli
ISBN: 1589950046
It tells about basic kernel data structure for driver writing. One of
the best aspect of this book is that it shows you real code for real
device (a simple PCI device). Moreover, it was quite easy to read.
Although it focuses on FreeBSD 4.X. For those who want some
_introduction_ for the FreeBSD driver
writing, I would like to recommend this.
Regard,
Sangwoo Shim
Ah, didn't know about that book. Yes, that sounds like a good
foundation, though some aspects of drivers in 5.x and beyond are
vastly different than in 4.x and prior, particularly concerning
synchronization and interrupt behaviour. The next step is to talk about
the different driver APIs and infrastructure, as well as debugging
guides.
Scott
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