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Diffstat (limited to 'src/video_out/libdha/kernelhelper/README')
-rw-r--r-- | src/video_out/libdha/kernelhelper/README | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/src/video_out/libdha/kernelhelper/README b/src/video_out/libdha/kernelhelper/README deleted file mode 100644 index 98a7923b3..000000000 --- a/src/video_out/libdha/kernelhelper/README +++ /dev/null @@ -1,38 +0,0 @@ -dhahelper is small driver to provide some kernel function into userspace. -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -The main reason you need to use dhahelper is for busmastering. -(Btw, lacking of possibility to implement conversion of -virtual addresses into physical in userspace caused -implementing of so-called DRM drivers for Linux from -XFree86 side). -Second goal (still is unfinished) - provide possibility -to control port and physical memory access through -groups and access rights of this driver. (Unix way). - -Installation: -~~~~~~~~~~~~~ -just type in this directory: -make all install - -The device node /dev/dhahelper will be created. The initial -permissions of this node are restrictive. See below for information -on how to make it available to non-root users. - -Porting: -~~~~~~~~ -This driver was developed only for Linux. -So if someone will port that on other unices -then any patches are gladly accepted. - -WARNING: -~~~~~~~~ - -This driver violates some kernel security rules. To keep this driver -from anonymous access I suggest you create a new group (e.g. dha) for -/dev/dhahelper and set the permissions to 660 (or ug+rw,o-rw). Then -do one of the following: - -- add trusted users to group dha. -- make trusted applications SGID to dha. - -Good luck! |