On Fri, Oct 02, 2015 at 02:19:40PM +0100, Arun Siluvery wrote:
> Required for WaAllowUMDToModifyHDCChicken1:skl,bxt
>
> Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
> Cc: Nick Hoath <nicholas.hoath@xxxxxxxxx>
> Signed-off-by: Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx>
Usual maintainer request: Needs the corresponding mesa patches reviewed
before I can pull this in.
-Daniel
> ---
> drivers/gpu/drm/i915/i915_reg.h | 2 ++
> drivers/gpu/drm/i915/intel_ringbuffer.c | 6 ++++++
> 2 files changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 797c74e..dc84072 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -5937,6 +5937,8 @@ enum skl_disp_power_wells {
> #define HDC_FORCE_NON_COHERENT (1<<4)
> #define HDC_BARRIER_PERFORMANCE_DISABLE (1<<10)
>
> +#define HDC_CHICKEN1 0x7304
> +
> /* GEN9 chicken */
> #define SLICE_ECO_CHICKEN0 0x7308
> #define PIXEL_MASK_CAMMING_DISABLE (1 << 14)
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index 64b2754..a091e9e 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -921,6 +921,7 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
> struct drm_device *dev = ring->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> uint32_t tmp;
> + int ret;
>
> /* WaDisablePartialInstShootdown:skl,bxt */
> WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
> @@ -979,6 +980,11 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
> tmp |= HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE;
> WA_SET_BIT_MASKED(HDC_CHICKEN0, tmp);
>
> + /* WaAllowUMDToModifyHDCChicken1:skl,bxt */
> + ret = wa_ring_whitelist_reg(ring, HDC_CHICKEN1);
> + if (ret)
> + return ret;
> +
> /* WaDisableSamplerPowerBypassForSOPingPong:skl,bxt */
> if (IS_SKYLAKE(dev) ||
> (IS_BROXTON(dev) && INTEL_REVID(dev) <= BXT_REVID_B0)) {
> --
> 1.9.1
>
> _______________________________________________
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> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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