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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-18 11:16:55 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-18 11:16:55 +1000 |
commit | 4b337c5f245b6587ba844ac7bb13c313a2912f7b (patch) | |
tree | 999c6a6580b76a083c8efb9dabff709d1c49fcd0 /drivers/gpu/drm/radeon/Kconfig | |
parent | 492b057c426e4aa747484958e18e9da29003985d (diff) | |
parent | 3fe0344faf7fdcb158bd5c1a9aec960a8d70c8e8 (diff) |
Merge commit 'origin/master' into next
Diffstat (limited to 'drivers/gpu/drm/radeon/Kconfig')
-rw-r--r-- | drivers/gpu/drm/radeon/Kconfig | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/Kconfig b/drivers/gpu/drm/radeon/Kconfig new file mode 100644 index 00000000000..2168d67f09a --- /dev/null +++ b/drivers/gpu/drm/radeon/Kconfig @@ -0,0 +1,34 @@ +config DRM_RADEON_KMS + bool "Enable modesetting on radeon by default" + depends on DRM_RADEON + select DRM_TTM + help + Choose this option if you want kernel modesetting enabled by default, + and you have a new enough userspace to support this. Running old + userspaces with this enabled will cause pain. + + When kernel modesetting is enabled the IOCTL of radeon/drm + driver are considered as invalid and an error message is printed + in the log and they return failure. + + KMS enabled userspace will use new API to talk with the radeon/drm + driver. The new API provide functions to create/destroy/share/mmap + buffer object which are then managed by the kernel memory manager + (here TTM). In order to submit command to the GPU the userspace + provide a buffer holding the command stream, along this buffer + userspace have to provide a list of buffer object used by the + command stream. The kernel radeon driver will then place buffer + in GPU accessible memory and will update command stream to reflect + the position of the different buffers. + + The kernel will also perform security check on command stream + provided by the user, we want to catch and forbid any illegal use + of the GPU such as DMA into random system memory or into memory + not owned by the process supplying the command stream. This part + of the code is still incomplete and this why we propose that patch + as a staging driver addition, future security might forbid current + experimental userspace to run. + + This code support the following hardware : R1XX,R2XX,R3XX,R4XX,R5XX + (radeon up to X1950). Works is underway to provide support for R6XX, + R7XX and newer hardware (radeon from HD2XXX to HD4XXX). |