From: Zhenyu Wang Date: Mon, 30 Aug 2010 08:12:42 +0000 (+0800) Subject: drm/i915: Enable MI_FLUSH on Sandybridge X-Git-Tag: v2.6.36-rc4~9^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a69ffdbfcba8eabf2ca9d384b578e6f28b339c61;p=platform%2Fkernel%2Flinux-3.10.git drm/i915: Enable MI_FLUSH on Sandybridge MI_FLUSH is being deprecated, but still available on Sandybridge. Make sure it's enabled as userspace still uses MI_FLUSH. Signed-off-by: Zhenyu Wang Cc: stable@kernel.org Signed-off-by: Chris Wilson --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 67e3ec1..d094e91 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -319,6 +319,7 @@ #define MI_MODE 0x0209c # define VS_TIMER_DISPATCH (1 << 6) +# define MI_FLUSH_ENABLE (1 << 11) #define SCPD0 0x0209c /* 915+ only */ #define IER 0x020a0 diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 51e9c9e7..cb3508f 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -220,9 +220,13 @@ static int init_render_ring(struct drm_device *dev, { drm_i915_private_t *dev_priv = dev->dev_private; int ret = init_ring_common(dev, ring); + int mode; + if (IS_I9XX(dev) && !IS_GEN3(dev)) { - I915_WRITE(MI_MODE, - (VS_TIMER_DISPATCH) << 16 | VS_TIMER_DISPATCH); + mode = VS_TIMER_DISPATCH << 16 | VS_TIMER_DISPATCH; + if (IS_GEN6(dev)) + mode |= MI_FLUSH_ENABLE << 16 | MI_FLUSH_ENABLE; + I915_WRITE(MI_MODE, mode); } return ret; }