[Intel-gfx] [PATCH v2 4/6] drm/i915/icl: WaAllowUMDToModifySamplerMode

[Radhakrishna Sripada]

On Thu, Oct 04, 2018 at 11:29:37AM -0700, Radhakrishna Sripada wrote:
> From: Oscar Mateo <oscar.mateo at intel.com>
> 
> Required for Bindless samplers.
> 
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_reg.h          | 2 ++
>  drivers/gpu/drm/i915/intel_workarounds.c | 3 +++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 4fb8e9eef312..c8a187d8db0f 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -8632,6 +8632,8 @@ enum {
>  #define GAMW_ECO_DEV_RW_IA_REG			_MMIO(0x4080)
>  #define   GAMW_ECO_DEV_CTX_RELOAD_DISABLE	(1 << 7)
>  
> +#define GEN10_SAMPLER_MODE		_MMIO(0xE18C)
> +
>  /* IVYBRIDGE DPF */
>  #define GEN7_L3CDERRST1(slice)		_MMIO(0xB008 + (slice) * 0x200) /* L3CD Error Status 1 */
>  #define   GEN7_L3CDERRST1_ROW_MASK	(0x7ff << 14)
> diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
> index 69e247409050..65cd36cd2957 100644
> --- a/drivers/gpu/drm/i915/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/intel_workarounds.c
> @@ -1011,6 +1011,9 @@ static void icl_whitelist_build(struct whitelist *w)
>  {
>  	/* WaAllowUMDToModifyHalfSliceChicken7:icl */
>  	whitelist_reg(w, GEN9_HALF_SLICE_CHICKEN7);
> +
> +	/* WaAllowUMDToModifySamplerMode:icl */
> +	whitelist_reg(w, GEN10_SAMPLER_MODE);
User space consumer mesa: https://gitlab.freedesktop.org/mesa/mesa/blob/master/src/mesa/drivers/dri/i965/brw_state_upload.c#L72

Regards,
Radhakrishna(RK) Sripada
>  }
>  
>  static struct whitelist *whitelist_build(struct intel_engine_cs *engine,
> -- 
> 2.9.3
>