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Benjamin Herrenschmidt a875821f7b drm: Fix for non-coherent DMA PowerPC 
This patch fixes bits of the DRM so to make the radeon DRI work on
non-cache coherent PCI DMA variants of the PowerPC processors.

It moves the few places that needs change to wrappers to that
other architectures with similar issues can easily add their
own changes to those wrappers, at least until we have more useful
generic kernel API.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-03-05 19:25:03 +10:00
bsd-core bsd: Replace other occurrences of msleep with mtx_sleep 2007-12-02 01:45:09 -05:00
libdrm drm/ttm: add ioctl to get back memory managed area sized 2008-03-06 05:31:50 +10:00
linux-core drm: Fix for non-coherent DMA PowerPC 2008-03-05 19:25:03 +10:00
scripts drm: update kernel generator script using v4l script 2007-11-05 12:56:55 +10:00
shared-core ttm: make sure userspace can't destroy kernel create memory managers 2008-03-06 05:37:54 +10:00
tests Fix ttmtest. 2007-11-13 15:47:20 +01:00
.gitignore Add a set of tests for DRM locking, exposing issues on BSD. 2007-08-15 13:41:24 -07:00
autogen.sh update autogen from xserver tree 2005-09-12 06:21:24 +00:00
configure.ac Add some trivial regression tests, one of which fails. 2007-07-19 04:59:59 -07:00
libdrm.pc.in Better pkgconfig-fu: -ldrm in Libs: 2005-10-13 21:03:31 +00:00
Makefile.am Add some trivial regression tests, one of which fails. 2007-07-19 04:59:59 -07:00
README More detailed instructions, tips. 2007-04-25 14:52:29 -06:00

README 

DRM README file


There are two main parts to this package: the DRM client library/interface
(libdrm.so) and kernel/hardware-specific device modules (such as i915.ko).



Compiling
---------

By default, libdrm and the DRM header files will install into /usr/local/.
If you want to install this DRM to replace your system copy, say:

	./configure --prefix=/usr --exec-prefix=/

Then,
	make install


To build the device-specific kernel modules:

	cd linux-core/
	make
	cp *.ko /lib/modules/VERSION/kernel/drivers/char/drm/
	   (where VERSION is your kernel version: uname -f)

Or,
	cd bsd-core/
	make
	copy the kernel modules to the appropriate place



Tips & Trouble-shooting
-----------------------

1. You'll need kernel sources.  If using Fedora Core 5, for example, you may
   need to install RPMs such as:

	kernel-smp-devel-2.6.15-1.2054_FC5.i686.rpm
	kernel-devel-2.6.15-1.2054_FC5.i686.rpm
	etc.


2. You may need to make a symlink from /lib/modules/VERSION/build to your
   kernel sources in /usr/src/kernels/VERSION (where version is `uname -r`):

	cd /lib/modules/VERSION
	ln -s /usr/src/kernels/VERSION build


3. If you've build the kernel modules but they won't load because of an
   error like this:

	$ /sbin/modprobe drm
	FATAL: Error inserting drm (/lib/modules/2.6.15-1.2054_FC5smp/kernel/drivers/char/drm/drm.ko): Invalid module format

   And 'dmesg|tail' says:

	drm: disagrees about version of symbol struct_module 

   Try recompiling your drm modules without the Module.symvers file.
   That is rm the /usr/src/kernels/2.6.15-1.2054_FC5-smp-i686/Module.symvers
   file (or rename it).  Then do a 'make clean' before rebuilding your drm
   modules.