From 81e231afe7478f1bf14bbb17c26d6ebf054faece Mon Sep 17 00:00:00 2001 From: Damien Lespiau <damien.lespiau@intel.com> Date: Mon, 9 Feb 2015 19:33:19 +0000 Subject: [PATCH] drm/i915/skl: Implement WaDisableHDCInvalidation Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Reviewed-by: Nick Hoath <nicholas.hoath@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_pm.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 0fb6a4f6c6f75..75227009d0bbc 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -140,6 +140,7 @@ #define GEN8_RING_PDP_LDW(ring, n) ((ring)->mmio_base+0x270 + (n) * 8) #define GAM_ECOCHK 0x4090 +#define BDW_DISABLE_HDC_INVALIDATION (1<<25) #define ECOCHK_SNB_BIT (1<<10) #define HSW_ECOCHK_ARB_PRIO_SOL (1<<6) #define ECOCHK_PPGTT_CACHE64B (0x3<<3) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index d7750176091b1..a2b9c3e213f93 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -66,6 +66,12 @@ static void skl_init_clock_gating(struct drm_device *dev) GEN8_SDEUNIT_CLOCK_GATE_DISABLE); } + if (INTEL_REVID(dev) <= SKL_REVID_D0) + /* WaDisableHDCInvalidation:skl */ + I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | + BDW_DISABLE_HDC_INVALIDATION); + + if (INTEL_REVID(dev) <= SKL_REVID_E0) /* WaDisableLSQCROPERFforOCL:skl */ I915_WRITE(GEN8_L3SQCREG4, I915_READ(GEN8_L3SQCREG4) | -- GitLab