Update DRM generic code to Linux 3.8 [FreeBSD WIKI]

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====== Update DRM generic code to Linux 3.8 ======

Currently, our DRM code in ''%%sys/dev/drm2%%'' is a copy of the old DRI1 code from ''%%sys/dev/drm%%'', plus the required bits from DRI2 to make the i915 KMS driver work. The missing parts were taken from Linux older than 3.4 (I don't know the exact version).

We need to update this DRM code to fix bugs and add new features, especially DRM-PRIME to support multi-cards configurations. This will allow us to ease current driver support (especially [[Graphics/Update i915 GPU driver to Linux 3.8|update the i915 driver]] to gain support for Haswell platforms) and port new drivers.

===== Current status (2015-03-17) =====

<callout type="warning">
**Project finished**

The DRM update was committed to HEAD in [[https://svnweb.freebsd.org/changeset/base/280183|r280183]].

See [[/Graphics]] for further informations.
</callout>

===== How to test =====

  - Clone the ''%%kms-drm-update-38%%'' branch on %%GitHub%%.
  - Build and install kernel
  - Reboot