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| author | Dave Airlie <airlied@linux.ie> | 2007-10-29 15:14:03 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2008-02-05 14:33:32 +1000 |
| commit | a13af4b4d842da6d7065b8c73fa8f0ac58fea1b6 (patch) | |
| tree | 3269002c62ee1f10728cfa5a9782225329166d6b /include/linux/agpgart.h | |
| parent | 9ef9dc69d4167276c04590d67ee55de8380bc1ad (diff) | |
| download | lwn-a13af4b4d842da6d7065b8c73fa8f0ac58fea1b6.tar.gz lwn-a13af4b4d842da6d7065b8c73fa8f0ac58fea1b6.zip | |
agp: add chipset flushing support to AGP interface
This bumps the AGP interface to 0.103.
Certain Intel chipsets contains a global write buffer, and this can require
flushing from the drm or X.org to make sure all data has hit RAM before
initiating a GPU transfer, due to a lack of coherency with the integrated
graphics device and this buffer.
This just adds generic support to the AGP interfaces, a follow-on patch
will add support to the Intel driver to use this interface.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/linux/agpgart.h')
| -rw-r--r-- | include/linux/agpgart.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/agpgart.h b/include/linux/agpgart.h index 09fbf7e5a6cb..62aef589eb94 100644 --- a/include/linux/agpgart.h +++ b/include/linux/agpgart.h @@ -38,6 +38,7 @@ #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, struct agp_bind*) #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, struct agp_unbind*) +#define AGPIOC_CHIPSET_FLUSH _IO (AGPIOC_BASE, 10) #define AGP_DEVICE "/dev/agpgart" |