Changes between Version 12 and Version 13 of Ticket #187


Ignore:
Timestamp:
2010-03-12T17:23:19Z (14 years ago)
Author:
Jakub Jermář
Comment:

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  • Ticket #187 – Description

    v12 v13  
    77
    88 What Gains and Benefits will this bring?::
    9  The HelenOS networking stack actually comes with a driver for a NE2000 clone borrowed from MINIX 3 which was adjusted to compile on HelenOS. The problem of the MINIX 3 driver though is that it was not written with 64-bits in mind. This is not a problem on a 32-bit MINIX 3, but is a problem on a multiplatform 64-bit system such as HelenOS. The MINIX 3 also has a different view on how to do I/O with the device, so mixing the MINIX 3 and HelenOS code results in a somewhat bizarre hybrid. Needless to say, a clean native implementation is much better than a whimsical hybrid.
     9 The HelenOS networking stack actually comes with a driver for a NE2000 clone borrowed from MINIX 3 which was adjusted to compile on HelenOS. The problem of the MINIX 3 driver though is that it was not written with 64-bits in mind. This is not a problem on a 32-bit x86-centric MINIX 3, but is a problem on a multiplatform 64-bit system such as HelenOS. The MINIX 3 also has a different view on how to do I/O with the device, so mixing the MINIX 3 and HelenOS code results in a somewhat bizarre hybrid. Needless to say, a clean native implementation is much better than a whimsical hybrid.
    1010
    1111 The clone supported by the MINIX 3 driver is dp8390. For HelenOS, this is an important network interface card thanks to its large incidence in the real world and also in various simulators such as Qemu. As of now, it is the only NIC supported by HelenOS besides the loopback device.