Re: Device Driver testing - Please CC the reply to my email address

[Arun Srinivasan <arunlkml@xxxxxxxxx>]

Appreciate your time. I am starting my driver testing right now with a serila port driver (linux 2.4). Since, I am quite new to this not very sure about my approach, so need help. I have listed some of the possible test cases for a driver. 

It would be of great help if you could give me some suggestions. I also need some info on how I can test stuff like flowcontrol, baudrate etc. after setting them  in the kernel i.e., I need to verify if the actual flowcontrol is taking place between the computer and the serial port 
device.Please help.

Now, some of the test cases that I have thought about are :

1.	Open serial port
2.	Write Data to the serial port
3.	Read Data from the serial port
4.	Close serial port
Configuration settings
5.	baud rates
6.	close_delay
7.	(Setserial)- closing_wait delay
8.	(Setserial) -  autoconfig
9.	(stty)Data character size
10.	(stty)Size of stop bits
11.	(stty)Enable parity bits
12.	Enable odd parity
13.	Enable hangup signals when last tty closed
14.	Diable modem control signals
Software/Hardware Flow control
15.	(stty) Enable Hardware Flow control(most be set both in serial port driver and the device using the serial port)
16.	(stty) Disable Hardware Flow control
17.	Set/Unset  iXon
18.	Set /Unset iXoff
19.	Set / Unset iXany
Input Settings
20.	Enable /disable canonical input
21.	Enable /disable Raw input
22.	Enable / disable Input Parity check
23.	Enable / disable ignore parity check
24.	Set Parity error marking ('0' if ignore parity)
25.	Strip 8th bit of input characters

On 2/6/06, Srinivas G. <srinivasg@xxxxxxxxxxxxxxxxxxxxx> wrote:
> 
> Dear Arun Srinivas,
> 
> >Can someone please guide me how do I test device drivers in linux? If
> you can please send me useful links/ materials >on it it wud be very
> helpful.
> 
> It is totally depends on what type of device do you want test on Linux
> box? We developed and tested the char and block device drivers
> thoroughly on Fedora Core, Red hat and SuSE Linux boxes.
> 
> Suppose, if it is block device driver, test cases includes like,
> 1)      copy to and from the device for different sizes of files
> 2)      mount and un mount the device
> 3)      format the device
> 4)      create the partitions and try to mount and format the partitions
> individually
> etc.
> 
> In all these cases, try to print the debug messages in the driver and
> see any ERROR messages you come across while testing the driver.
> 
> If you are really interested I will send you the more test cases.
> 
> Regards,
> Srinivas G
> 



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