From: Jesse Barnes Date: Thu, 25 Oct 2012 19:15:45 +0000 (-0700) Subject: drm/i915: implement WaDisablePSDDualDispatchEnable on IVB & VLV X-Git-Tag: v3.8-rc1~42^2~193^2~27 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=12f3382bc0262e981a2e58aca900cbbdbbe66825;p=platform%2Fkernel%2Flinux-exynos.git drm/i915: implement WaDisablePSDDualDispatchEnable on IVB & VLV Workaround for dual port PS dispatch on GT1. v2: pull in register definition & offset handling v3: use IVB GT1 macro to get the right regs (Ben) v4: add for VLV too (Ben) v5: don't read the reg, it's masked so we'll only enable the one extra bit (Chris) v6: use a _GT2 suffix for the second reg (Chris) Signed-off-by: Jesse Barnes Reviewed-by: Antti Koskipää Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index ba74df2..5138563 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1134,6 +1134,7 @@ static bool IS_DISPLAYREG(u32 reg) switch (reg) { case GEN7_ROW_CHICKEN2: + case GEN7_HALF_SLICE_CHICKEN1: return false; default: break; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 2aff1bb..7570c3b 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4305,6 +4305,11 @@ #define GEN7_L3LOG_BASE 0xB070 #define GEN7_L3LOG_SIZE 0x80 +#define GEN7_HALF_SLICE_CHICKEN1 0xe100 /* IVB GT1 + VLV */ +#define GEN7_HALF_SLICE_CHICKEN1_GT2 0xf100 +#define GEN7_MAX_PS_THREAD_DEP (8<<12) +#define GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE (1<<3) + #define GEN7_ROW_CHICKEN2 0xe4f4 #define GEN7_ROW_CHICKEN2_GT2 0xf4f4 #define DOP_CLOCK_GATING_DISABLE (1<<0) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 10e6d6c..263663a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3592,6 +3592,14 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | CHICKEN3_DGMG_DONE_FIX_DISABLE); + /* WaDisablePSDDualDispatchEnable */ + if (IS_IVB_GT1(dev)) + I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, + _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); + else + I915_WRITE(GEN7_HALF_SLICE_CHICKEN1_GT2, + _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); + /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */ I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); @@ -3679,6 +3687,9 @@ static void valleyview_init_clock_gating(struct drm_device *dev) CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | CHICKEN3_DGMG_DONE_FIX_DISABLE); + I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, + _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); + /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */ I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);