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| author | Olof Johansson <olof@lixom.net> | 2012-05-10 11:21:11 +0400 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2012-05-10 11:23:17 +0400 |
| commit | caafc71b1a25096ef74904adb19d37e5c6a282dc (patch) | |
| tree | 17f0602c6e04fdec78c50a1c2cbd70a0303ed2c6 /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | af568679f51de779d0e9ad7d8360dc7727da546d (diff) | |
| parent | bcd59b0f0c14b0584c1213ee3b53d5f84517c419 (diff) | |
| download | linux-caafc71b1a25096ef74904adb19d37e5c6a282dc.tar.xz | |
Merge tag 'v3.5-soc' of git://gitorious.org/linux-davinci/linux-davinci into next/drivers
DaVinci SoC updates for v3.5
This pull request updates the DaVinci SoC support to implement DEBUG_LL port
choice and optimizes the DMA ISR by removing unnecessary register reads.
* tag 'v3.5-soc' of git://gitorious.org/linux-davinci/linux-davinci:
ARM: davinci: optimize the DMA ISR
ARM: davinci: implement DEBUG_LL port choice
+ sync with Linux 3.4-rc6
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index f75806e5bff5..80fce51e2f43 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -401,6 +401,14 @@ static int init_render_ring(struct intel_ring_buffer *ring) if (INTEL_INFO(dev)->gen >= 6) { I915_WRITE(INSTPM, INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING); + + /* From the Sandybridge PRM, volume 1 part 3, page 24: + * "If this bit is set, STCunit will have LRA as replacement + * policy. [...] This bit must be reset. LRA replacement + * policy is not supported." + */ + I915_WRITE(CACHE_MODE_0, + CM0_STC_EVICT_DISABLE_LRA_SNB << CM0_MASK_SHIFT); } return ret; |