Oscar Mateo <oscar.ma...@intel.com> writes:
> Disable CGPSF unit clock gating to prevent an issue.
>
> v2: Rebased on top of the WA refactoring
> v3: Added References (Mika)
>
> References: HSDES#1406838659
> Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
> Signed-off-by: Oscar Mateo <oscar.ma...@intel.com>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 13 ++++++++-----
> drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++
> 2 files changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index f6a38fd..8caf42f 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3838,15 +3838,18 @@ enum {
> * GEN10 clock gating regs
> */
> #define SLICE_UNIT_LEVEL_CLKGATE _MMIO(0x94d4)
> -#define SARBUNIT_CLKGATE_DIS (1 << 5)
> -#define RCCUNIT_CLKGATE_DIS (1 << 7)
> -#define MSCUNIT_CLKGATE_DIS (1 << 10)
> +#define SARBUNIT_CLKGATE_DIS (1 << 5)
> +#define RCCUNIT_CLKGATE_DIS (1 << 7)
> +#define MSCUNIT_CLKGATE_DIS (1 << 10)
>
> #define SUBSLICE_UNIT_LEVEL_CLKGATE _MMIO(0x9524)
> -#define GWUNIT_CLKGATE_DIS (1 << 16)
> +#define GWUNIT_CLKGATE_DIS (1 << 16)
>
> #define UNSLICE_UNIT_LEVEL_CLKGATE _MMIO(0x9434)
> -#define VFUNIT_CLKGATE_DIS (1 << 20)
> +#define VFUNIT_CLKGATE_DIS (1 << 20)
Some unintentional whitespace movements?
> +
> +#define INF_UNIT_LEVEL_CLKGATE _MMIO(0x9560)
> +#define CGPSF_CLKGATE_DIS (1 << 3)
>
> /*
> * Display engine regs
> diff --git a/drivers/gpu/drm/i915/intel_workarounds.c
> b/drivers/gpu/drm/i915/intel_workarounds.c
> index bba43fd..35f2de3 100644
> --- a/drivers/gpu/drm/i915/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/intel_workarounds.c
> @@ -755,6 +755,12 @@ static void icl_gt_workarounds_apply(struct
> drm_i915_private *dev_priv)
> I915_WRITE(GEN10_L3_CHICKEN_MODE_REGISTER,
> (I915_READ(GEN10_L3_CHICKEN_MODE_REGISTER) |
> GEN11_I2M_WRITE_DISABLE));
> +
> + /* Wa_1406838659:icl (pre-prod) */
> + if (IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_C0))
It is inclusive and C0 is fixed so,
IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_B0))
With that and whitespace on check,
Reviewed-by: Mika Kuoppala <mika.kuopp...@linux.intel.com>
> + I915_WRITE(INF_UNIT_LEVEL_CLKGATE,
> + (I915_READ(INF_UNIT_LEVEL_CLKGATE) |
> + CGPSF_CLKGATE_DIS));
> }
>
> void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
> --
> 1.9.1
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