| To: | netdev@xxxxxxxxxxx |
|---|---|
| Subject: | VME IP Driver Development - some questions |
| From: | Hendrik Wiese <7.e.Q@xxxxxxxxxxxxxxxxxxx> |
| Date: | Tue, 16 Nov 2004 08:44:52 +0100 |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mozilla Thunderbird 0.9 (Windows/20041103) |
Hello, I have got some questions about driver development on Linux 2.6: Is there somebody who can explain, what is meant with wait_event and wake_up? Does it mean, when I run "ifconfig", and the driver says "wait_event", is "ifconfig" blocked until my driver which is continuing his work says "wake_up"? Have I explained this correctly? If I give wait_event a condition, is it right that the driver continues its work and ifconfig is blocked until the driver does something that sets this condition true? Something else: we need a driver, which establishes an IP layer on top of the VME bus to transfer data via a network device (called dpn). On the other side this driver must be able to communicate with passive modules inside the vme-rack by polling their shared memory for data. Is it possible to create two kernel modules which run with the same hardware? One module for the communication with the active VME modules via IP and another one for the communication with the passive VME modules by polling their shared memory? Many questions, I know. But I am an absolute newbie in driver development. And I hope you can help me. If somebody knows a source of informations regarding this topic, which is held in german, please tell me. Thanks a lot kind regards Hendrik (Germany) |
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