From 983b4b9def913991ef829ca635f1b3e7dd391c1b Mon Sep 17 00:00:00 2001 From: Nick Hoath Date: Fri, 10 Apr 2015 13:12:25 +0100 Subject: [PATCH] drm/i915/bxt: Add WaDisableSbeCacheDispatchPortSharing Note that we also need this for skl. Signed-off-by: Nick Hoath Reviewed-by: Imre Deak [danvet: Note that we also need this for skl, requested by Imre.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_ringbuffer.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 9447b27703f4..558d3dd5a039 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6738,6 +6738,7 @@ enum skl_disp_power_wells { #define GEN7_HALF_SLICE_CHICKEN1_GT2 0xf100 #define GEN7_MAX_PS_THREAD_DEP (8<<12) #define GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE (1<<10) +#define GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE (1<<4) #define GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE (1<<3) #define GEN9_HALF_SLICE_CHICKEN5 0xe188 diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 98424e29917c..b0bd9bb6676e 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1050,6 +1050,13 @@ static int bxt_init_workarounds(struct intel_engine_cs *ring) WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, STALL_DOP_GATING_DISABLE); + /* WaDisableSbeCacheDispatchPortSharing:bxt */ + if (INTEL_REVID(dev) <= BXT_REVID_B0) { + WA_SET_BIT_MASKED( + GEN7_HALF_SLICE_CHICKEN1, + GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE); + } + return 0; } -- 2.20.1