From: Nick Hoath Date: Fri, 6 Feb 2015 11:30:04 +0000 (+0000) Subject: drm/i915: gen 9 h/w w/a (WaEnableForceRestoreInCtxtDescForVCS) X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=203a571b21e7613a7b18bd7340ea1ca75327e7c6;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915: gen 9 h/w w/a (WaEnableForceRestoreInCtxtDescForVCS) Add: WaEnableForceRestoreInCtxtDescForVCS v2: Add stepping check. v3: Fixed stepping check direction. Cleaned up indentation. Signed-off-by: Nick Hoath Reviewed-by: Damien Lespiau Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index a94346fee160..091555f34731 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -254,8 +254,10 @@ u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj) return lrca >> 12; } -static uint64_t execlists_ctx_descriptor(struct drm_i915_gem_object *ctx_obj) +static uint64_t execlists_ctx_descriptor(struct intel_engine_cs *ring, + struct drm_i915_gem_object *ctx_obj) { + struct drm_device *dev = ring->dev; uint64_t desc; uint64_t lrca = i915_gem_obj_ggtt_offset(ctx_obj); @@ -272,6 +274,13 @@ static uint64_t execlists_ctx_descriptor(struct drm_i915_gem_object *ctx_obj) * signalling between Command Streamers */ /* desc |= GEN8_CTX_FORCE_RESTORE; */ + /* WaEnableForceRestoreInCtxtDescForVCS:skl */ + if (IS_GEN9(dev) && + INTEL_REVID(dev) <= SKL_REVID_B0 && + (ring->id == BCS || ring->id == VCS || + ring->id == VECS || ring->id == VCS2)) + desc |= GEN8_CTX_FORCE_RESTORE; + return desc; } @@ -286,13 +295,13 @@ static void execlists_elsp_write(struct intel_engine_cs *ring, /* XXX: You must always write both descriptors in the order below. */ if (ctx_obj1) - temp = execlists_ctx_descriptor(ctx_obj1); + temp = execlists_ctx_descriptor(ring, ctx_obj1); else temp = 0; desc[1] = (u32)(temp >> 32); desc[0] = (u32)temp; - temp = execlists_ctx_descriptor(ctx_obj0); + temp = execlists_ctx_descriptor(ring, ctx_obj0); desc[3] = (u32)(temp >> 32); desc[2] = (u32)temp;