From: Ville Syrj?l? <ville.syrjala at linux.intel.com> GAC_ECO_BITS has a bit similar to GAM_ECOCHK's ECOCHK_SNB_BIT. Add the define, and enable it on SNB. Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com> --- drivers/gpu/drm/i915/i915_gem_gtt.c | 3 ++- drivers/gpu/drm/i915/i915_reg.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 24a23b3..593137b 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -312,7 +312,8 @@ void i915_gem_init_ppgtt(struct drm_device *dev) uint32_t ecochk, gab_ctl, ecobits; ecobits = I915_READ(GAC_ECO_BITS); - I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B); + I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_SNB_BIT | + ECOBITS_PPGTT_CACHE64B); gab_ctl = I915_READ(GAB_CTL); I915_WRITE(GAB_CTL, gab_ctl | GAB_CTL_CONT_AFTER_PAGEFAULT); diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 058686c..4b8fd4d 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -127,6 +127,7 @@ #define ECOCHK_PPGTT_CACHE4B (0x0<<3) #define GAC_ECO_BITS 0x14090 +#define ECOBITS_SNB_BIT (1<<13) #define ECOBITS_PPGTT_CACHE64B (3<<8) #define ECOBITS_PPGTT_CACHE4B (0<<8) -- 1.8.1.5
