Device Drivers

reza_asghari · 08-29-2002, 07:18 PM

I am going to start writing a device driver for a LSI Logic SCSI adapter board. I need a similar device driver source code that would give me some ideas how to do it and where to start from. Any pointers or help is appreciated.

Thymox · 08-29-2002, 07:27 PM

Welcome to LQ, Reza.

Have you thought about downloading the Linux Kernel Source? It's freely available from www.kernel.org and has the source code for many devices that would fall into the same (or similar) category as your LSI adapter. Are you certain, however, that your board is not already supported?

reza_asghari · 08-29-2002, 07:43 PM

Thymox,

Thanks for the reply and pointers. The LSI Logic SCSI Adapter is supported, but I have to pay for the driver. And, they charge us $1,500/CPU. We can cut cost, if we develop it ourselves.

I just need a similar source code for a device driver, then I can get a feeling how big and complicated of a job this can be.

MasterC · 08-30-2002, 05:46 AM

Since you already have a "working" version of an actual device driver for you actual piece of equipment, can you not look at that? Or are you trying to look at that, and look at a similar setup to compare the 2, and write a driver to include support for your hardware, while sticking to the standards from the other source code?

reza_asghari · 08-30-2002, 12:38 PM

Thanks for the reply.
I don't have the source for the driver. I just have the driver. I can open it read from it. But, I don't have the driver source. And, I have never written a device driver before. So, I need to look at a similar source code. Possibly, a device driver source code for a SCSI adapter hardware. After I write it, I don't know how to install it on the Linux. So, any help or pointer with this project, is most appreciated.

no2nt · 08-30-2002, 01:05 PM

Here's a good book from O'Reilly: Linux Device Drivers, 2nd Ed

http://safari.oreilly.com/main.asp?bookname=linuxdrive2

Is available for purchase or to read online.