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| author | Dave Airlie <airlied@linux.ie> | 2009-09-18 14:16:38 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-09-18 16:13:11 +1000 |
| commit | 698443d9ec1a33eff65b27b9514e06998bf57eb3 (patch) | |
| tree | c7fed660677470060168d8ab91b67bd6eeae5c4d /drivers/gpu/drm/radeon/avivod.h | |
| parent | 5e6dde7ec2e72f49ff749204efc03a59478d7d34 (diff) | |
| download | op-kernel-dev-698443d9ec1a33eff65b27b9514e06998bf57eb3.zip op-kernel-dev-698443d9ec1a33eff65b27b9514e06998bf57eb3.tar.gz | |
drm/radeon/kms: disable VGA rendering engine before taking over VRAM
Before we use any of VRAM, we need to disable the VGA rendering
engine, this render text mode into a graphical framebuffer
for scanout, however it does this on vblank, and can end up
overwriting the GART table and r600 shader objects.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/avivod.h')
| -rw-r--r-- | drivers/gpu/drm/radeon/avivod.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/avivod.h b/drivers/gpu/drm/radeon/avivod.h index d4e6e6e..e2b92c4 100644 --- a/drivers/gpu/drm/radeon/avivod.h +++ b/drivers/gpu/drm/radeon/avivod.h @@ -57,4 +57,13 @@ #define VGA_RENDER_CONTROL 0x0300 #define VGA_VSTATUS_CNTL_MASK 0x00030000 +/* AVIVO disable VGA rendering */ +static inline void radeon_avivo_vga_render_disable(struct radeon_device *rdev) +{ + u32 vga_render; + vga_render = RREG32(VGA_RENDER_CONTROL); + vga_render &= ~VGA_VSTATUS_CNTL_MASK; + WREG32(VGA_RENDER_CONTROL, vga_render); +} + #endif |
